Index: uspace/Makefile
===================================================================
--- uspace/Makefile	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -41,4 +41,5 @@
 	app/killall \
 	app/klog \
+	app/lsusb \
 	app/mkfat \
 	app/redir \
@@ -50,4 +51,6 @@
 	app/trace \
 	app/top \
+	app/usbinfo \
+	app/vuhid \
 	app/netecho \
 	app/nettest1 \
@@ -56,4 +59,5 @@
 	app/websrv \
 	app/sysinfo \
+	app/mkbd \
 	srv/clip \
 	srv/devmap \
@@ -114,5 +118,16 @@
 		drv/ns8250 \
 		srv/hw/irc/apic \
-		srv/hw/irc/i8259
+		srv/hw/irc/i8259 \
+		drv/ehci-hcd \
+		drv/ohci \
+		drv/uhci-hcd \
+		drv/uhci-rhd \
+		drv/usbflbk \
+		drv/usbhid \
+		drv/usbhub \
+		drv/usbmast \
+		drv/usbmid \
+		drv/usbmouse \
+		drv/vhc
 endif
 
@@ -124,5 +139,16 @@
 		drv/ns8250 \
 		srv/hw/irc/apic \
-		srv/hw/irc/i8259
+		srv/hw/irc/i8259 \
+		drv/ehci-hcd \
+		drv/ohci \
+		drv/uhci-hcd \
+		drv/uhci-rhd \
+		drv/usbflbk \
+		drv/usbhid \
+		drv/usbhub \
+		drv/usbmast \
+		drv/usbmid \
+		drv/usbmouse \
+		drv/vhc
 endif
 
@@ -151,4 +177,20 @@
 	lib/net
 
+ifeq ($(UARCH),amd64)
+	LIBS += lib/usb
+	LIBS += lib/usbhost
+	LIBS += lib/usbdev
+	LIBS += lib/usbhid
+	LIBS += lib/usbvirt
+endif
+
+ifeq ($(UARCH),ia32)
+	LIBS += lib/usb
+	LIBS += lib/usbhost
+	LIBS += lib/usbdev
+	LIBS += lib/usbhid
+	LIBS += lib/usbvirt
+endif
+
 LIBC_BUILD = $(addsuffix .build,$(LIBC))
 LIBS_BUILD = $(addsuffix .build,$(LIBS))
Index: uspace/Makefile.common
===================================================================
--- uspace/Makefile.common	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/Makefile.common	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -108,4 +108,10 @@
 LIBCLUI_PREFIX = $(LIB_PREFIX)/clui
 
+
+LIBUSB_PREFIX = $(LIB_PREFIX)/usb
+LIBUSBHOST_PREFIX = $(LIB_PREFIX)/usbhost
+LIBUSBDEV_PREFIX = $(LIB_PREFIX)/usbdev
+LIBUSBHID_PREFIX = $(LIB_PREFIX)/usbhid
+LIBUSBVIRT_PREFIX = $(LIB_PREFIX)/usbvirt
 LIBDRV_PREFIX = $(LIB_PREFIX)/drv
 LIBPACKET_PREFIX = $(LIB_PREFIX)/packet
@@ -125,4 +131,9 @@
 	endif
 endif
+# Build static whenever we use libusb because that library uses 
+# thread local variables
+ifneq ($(findstring usb, $(LIBS)),)
+	STATIC_BUILD = y
+endif
 
 ifeq ($(STATIC_BUILD), y)
Index: uspace/app/init/init.c
===================================================================
--- uspace/app/init/init.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/app/init/init.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -272,7 +272,4 @@
 	mount_tmpfs();
 	
-#ifdef CONFIG_START_DEVMAN
-	spawn("/srv/devman");
-#endif
 	spawn("/srv/apic");
 	spawn("/srv/i8259");
@@ -316,5 +313,15 @@
 	getterm("term/vc5", "/app/bdsh", false);
 	getterm("term/vc6", "/app/klog", false);
-	
+
+#ifdef CONFIG_START_DEVMAN
+
+#ifdef CONFIG_DEVMAN_EARLY_LAUNCH
+	spawn("/srv/devman");
+#else
+	getterm("term/vc7", "/srv/devman", false);
+#endif
+
+#endif
+
 	return 0;
 }
Index: uspace/app/lsusb/Makefile
===================================================================
--- uspace/app/lsusb/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/lsusb/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,44 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+BINARY = lsusb
+
+LIBS = \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS = \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+SOURCES = \
+	main.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/app/lsusb/main.c
===================================================================
--- uspace/app/lsusb/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/lsusb/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2010-2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup lsusb
+ * @{
+ */
+/**
+ * @file
+ * Listing of USB host controllers.
+ */
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <str_error.h>
+#include <bool.h>
+#include <getopt.h>
+#include <devman.h>
+#include <devmap.h>
+#include <usb/dev/hub.h>
+#include <usb/hc.h>
+
+#define NAME "lsusb"
+
+#define MAX_USB_ADDRESS USB11_ADDRESS_MAX
+#define MAX_FAILED_ATTEMPTS 10
+#define MAX_PATH_LENGTH 1024
+
+static void print_found_hc(size_t class_index, const char *path)
+{
+	// printf(NAME ": host controller %zu is `%s'.\n", class_index, path);
+	printf("Bus %02zu: %s\n", class_index, path);
+}
+static void print_found_dev(usb_address_t addr, const char *path)
+{
+	// printf(NAME ":     device with address %d is `%s'.\n", addr, path);
+	printf("  Device %02d: %s\n", addr, path);
+}
+
+static void print_hc_devices(devman_handle_t hc_handle)
+{
+	int rc;
+	usb_hc_connection_t conn;
+
+	usb_hc_connection_initialize(&conn, hc_handle);
+	rc = usb_hc_connection_open(&conn);
+	if (rc != EOK) {
+		printf(NAME ": failed to connect to HC: %s.\n",
+		    str_error(rc));
+		return;
+	}
+	usb_address_t addr;
+	for (addr = 1; addr < MAX_USB_ADDRESS; addr++) {
+		devman_handle_t dev_handle;
+		rc = usb_hc_get_handle_by_address(&conn, addr, &dev_handle);
+		if (rc != EOK) {
+			continue;
+		}
+		char path[MAX_PATH_LENGTH];
+		rc = devman_get_device_path(dev_handle, path, MAX_PATH_LENGTH);
+		if (rc != EOK) {
+			continue;
+		}
+		print_found_dev(addr, path);
+	}
+	usb_hc_connection_close(&conn);
+}
+
+int main(int argc, char *argv[])
+{
+	size_t class_index = 0;
+	size_t failed_attempts = 0;
+
+	while (failed_attempts < MAX_FAILED_ATTEMPTS) {
+		class_index++;
+		devman_handle_t hc_handle = 0;
+		int rc = usb_ddf_get_hc_handle_by_class(class_index, &hc_handle);
+		if (rc != EOK) {
+			failed_attempts++;
+			continue;
+		}
+		char path[MAX_PATH_LENGTH];
+		rc = devman_get_device_path(hc_handle, path, MAX_PATH_LENGTH);
+		if (rc != EOK) {
+			continue;
+		}
+		print_found_hc(class_index, path);
+		print_hc_devices(hc_handle);
+	}
+
+	return 0;
+}
+
+
+/** @}
+ */
Index: uspace/app/mkbd/Makefile
===================================================================
--- uspace/app/mkbd/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/mkbd/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,46 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+BINARY = mkbd
+
+LIBS = \
+	$(LIBUSBHID_PREFIX)/libusbhid.a \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a 
+EXTRA_CFLAGS = \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include \
+	-I$(LIBUSBHID_PREFIX)/include 
+
+SOURCES = \
+	main.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/app/mkbd/main.c
===================================================================
--- uspace/app/mkbd/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/mkbd/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,305 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup mkbd
+ * @{
+ */
+/**
+ * @file
+ * Sample application using the data from multimedia keys on keyboard
+ */
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <str_error.h>
+#include <bool.h>
+#include <getopt.h>
+#include <devman.h>
+#include <devmap.h>
+#include <usb/dev/hub.h>
+//#include <usb/host.h>
+//#include <usb/driver.h>
+#include <usb/hid/iface.h>
+#include <usb/dev/pipes.h>
+#include <async.h>
+#include <usb/hid/usages/core.h>
+#include <usb/hid/hidparser.h>
+#include <usb/hid/hiddescriptor.h>
+#include <usb/hid/usages/consumer.h>
+#include <assert.h>
+
+#define NAME "mkbd"
+
+static int dev_phone = -1;
+
+static int initialize_report_parser(int dev_phone, usb_hid_report_t **report)
+{
+	*report = (usb_hid_report_t *)malloc(sizeof(usb_hid_report_t));
+	if (*report == NULL) {
+		return ENOMEM;
+	}
+	
+	int rc = usb_hid_report_init(*report);
+	if (rc != EOK) {
+		usb_hid_free_report(*report);
+		*report = NULL;
+		//printf("usb_hid_report_init() failed.\n");
+		return rc;
+	}
+	
+	// get the report descriptor length from the device
+	size_t report_desc_size;
+	rc = usbhid_dev_get_report_descriptor_length(
+	    dev_phone, &report_desc_size);
+	if (rc != EOK) {
+		usb_hid_free_report(*report);
+		*report = NULL;
+		//printf("usbhid_dev_get_report_descriptor_length() failed.\n");
+		return rc;
+	}
+	
+	if (report_desc_size == 0) {
+		usb_hid_free_report(*report);
+		*report = NULL;
+		//printf("usbhid_dev_get_report_descriptor_length() returned 0.\n");
+		return EINVAL;	// TODO: other error code?
+	}
+	
+	uint8_t *desc = (uint8_t *)malloc(report_desc_size);
+	if (desc == NULL) {
+		usb_hid_free_report(*report);
+		*report = NULL;
+		return ENOMEM;
+	}
+	
+	// get the report descriptor from the device
+	size_t actual_size;
+	rc = usbhid_dev_get_report_descriptor(dev_phone, desc, report_desc_size,
+	    &actual_size);
+	if (rc != EOK) {
+		usb_hid_free_report(*report);
+		*report = NULL;
+		free(desc);
+		//printf("usbhid_dev_get_report_descriptor() failed.\n");
+		return rc;
+	}
+	
+	if (actual_size != report_desc_size) {
+		usb_hid_free_report(*report);
+		*report = NULL;
+		free(desc);
+//		printf("usbhid_dev_get_report_descriptor() returned wrong size:"
+//		    " %zu, expected: %zu.\n", actual_size, report_desc_size);
+		return EINVAL;	// TODO: other error code?
+	}
+	
+	// initialize the report parser
+	
+	rc = usb_hid_parse_report_descriptor(*report, desc, report_desc_size);
+	free(desc);
+	
+	if (rc != EOK) {
+		free(desc);
+//		printf("usb_hid_parse_report_descriptor() failed.\n");
+		return rc;
+	}
+	
+	return EOK;
+}
+
+static void print_key(uint8_t *buffer, size_t size, usb_hid_report_t *report)
+{
+	assert(buffer != NULL);
+	assert(report != NULL);
+	
+//	printf("Calling usb_hid_parse_report() with size %zu and "
+//	    "buffer: \n", size);
+//	for (size_t i = 0; i < size; ++i) {
+//		printf(" %X ", buffer[i]);
+//	}
+//	printf("\n");
+	
+	uint8_t report_id;
+	int rc = usb_hid_parse_report(report, buffer, size, &report_id);
+	if (rc != EOK) {
+//		printf("Error parsing report: %s\n", str_error(rc));
+		return;
+	}
+	
+	usb_hid_report_path_t *path = usb_hid_report_path();
+	if (path == NULL) {
+		return;
+	}
+	
+	usb_hid_report_path_append_item(path, USB_HIDUT_PAGE_CONSUMER, 0);
+	
+	usb_hid_report_path_set_report_id(path, report_id);
+
+	usb_hid_report_field_t *field = usb_hid_report_get_sibling(
+	    report, NULL, path, USB_HID_PATH_COMPARE_END 
+	    | USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY, 
+	    USB_HID_REPORT_TYPE_INPUT);
+	
+//	printf("Field: %p\n", field);
+	
+	while (field != NULL) {
+//		printf("Field usage: %u, field value: %d\n", field->usage, 
+//		    field->value);
+		if (field->value != 0) {
+			const char *key_str = 
+			    usbhid_multimedia_usage_to_str(field->usage);
+			printf("Pressed key: %s\n", key_str);
+		}
+		
+		field = usb_hid_report_get_sibling(
+		    report, field, path, USB_HID_PATH_COMPARE_END
+		    | USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY, 
+		    USB_HID_REPORT_TYPE_INPUT);
+//		printf("Next field: %p\n", field);
+	}
+	
+	usb_hid_report_path_free(path);
+}
+
+#define MAX_PATH_LENGTH 1024
+
+static void print_usage(char *app_name)
+{
+#define _INDENT "      "
+
+       printf(NAME ": Print out what multimedia keys were pressed.\n\n");
+       printf("Usage: %s device\n", app_name);
+       printf(_INDENT "The device is a devman path to the device.\n");
+
+#undef _OPTION
+#undef _INDENT
+}
+
+int main(int argc, char *argv[])
+{
+	int act_event = -1;
+	
+	if (argc <= 1) {
+		print_usage(argv[0]);
+		return -1;
+	}
+	
+	char *devpath = argv[1];
+	
+	devman_handle_t dev_handle = 0;
+	
+	int rc = usb_resolve_device_handle(devpath, NULL, NULL, &dev_handle);
+	if (rc != EOK) {
+		printf("Device not found or not of USB kind: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+	
+	rc = devman_device_connect(dev_handle, 0);
+	if (rc < 0) {
+		printf(NAME ": failed to connect to the device (handle %"
+		       PRIun "): %s.\n", dev_handle, str_error(rc));
+		return rc;
+	}
+	
+	dev_phone = rc;
+//	printf("Got phone to the device: %d\n", dev_phone);
+	
+	char path[MAX_PATH_LENGTH];
+	rc = devman_get_device_path(dev_handle, path, MAX_PATH_LENGTH);
+	if (rc != EOK) {
+		return ENOMEM;
+	}
+	
+	printf("Device path: %s\n", path);
+	
+	
+	usb_hid_report_t *report = NULL;
+	rc = initialize_report_parser(dev_phone, &report);
+	if (rc != EOK) {
+		printf("Failed to initialize report parser: %s\n",
+		    str_error(rc));
+		return rc;
+	}
+	
+	assert(report != NULL);
+	
+	size_t size;
+	rc = usbhid_dev_get_event_length(dev_phone, &size);
+	if (rc != EOK) {
+		printf("Failed to get event length: %s.\n", str_error(rc));
+		return rc;
+	}
+	
+//	printf("Event length: %zu\n", size);
+	uint8_t *event = (uint8_t *)malloc(size);
+	if (event == NULL) {
+		// hangup phone?
+		return ENOMEM;
+	}
+	
+//	printf("Event length: %zu\n", size);
+	
+	size_t actual_size;
+	int event_nr;
+	
+	while (1) {
+		// get event from the driver
+//		printf("Getting event from the driver.\n");
+		
+		/** @todo Try blocking call. */
+		rc = usbhid_dev_get_event(dev_phone, event, size, &actual_size, 
+		    &event_nr, 0);
+		if (rc != EOK) {
+			// hangup phone?
+			printf("Error in getting event from the HID driver:"
+			    "%s.\n", str_error(rc));
+			break;
+		}
+		
+//		printf("Got buffer: %p, size: %zu, max size: %zu\n", event, 
+//		    actual_size, size);
+		
+//		printf("Event number: %d, my actual event: %d\n", event_nr, 
+//		    act_event);
+		if (event_nr > act_event) {
+			print_key(event, size, report);
+			act_event = event_nr;
+		}
+		
+		async_usleep(10000);
+	}
+	
+	return 0;
+}
+
+
+/** @}
+ */
Index: uspace/app/tester/Makefile
===================================================================
--- uspace/app/tester/Makefile	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/app/tester/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -51,4 +51,5 @@
 	mm/malloc1.c \
 	mm/malloc2.c \
+	mm/mapping1.c \
 	mm/malloc3.c \
 	devs/devman1.c \
Index: uspace/app/tester/mm/mapping1.c
===================================================================
--- uspace/app/tester/mm/mapping1.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/tester/mm/mapping1.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <malloc.h>
+#include <as.h>
+#include <errno.h>
+#include "../tester.h"
+
+#define BUFFER1_PAGES 4
+#define BUFFER2_PAGES 2
+
+static void *create_as_area(size_t size)
+{
+	void *result = as_get_mappable_page(size);
+	TPRINTF("Creating AS area...\n");
+	if (as_area_create(result, size,
+	    AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE) != result) {
+		return NULL;
+	}
+	return result;
+}
+
+static void touch_area(void *area, size_t size)
+{
+	TPRINTF("Touching (faulting-in) AS area...\n");
+	
+	char *ptr = (char *)area;
+	
+	while (size > 0) {
+		*ptr = 0;
+		size--;
+		ptr++;
+	}
+}
+
+#define VERIFY_MAPPING(area, page_count, expected_rc) \
+    verify_mapping((area), (page_count), (expected_rc), #expected_rc)
+
+static bool verify_mapping(void *area, int page_count, int expected_rc,
+    const char *expected_rc_str)
+{
+	TPRINTF("Verifying mapping (expected: %s).\n", expected_rc_str);
+	int i;
+	for (i = 0; i < page_count; i++) {
+		void *page_start = ((char *)area) + PAGE_SIZE * i;
+		int rc = as_get_physical_mapping(page_start, NULL);
+		if (rc != expected_rc) {
+			TPRINTF("as_get_physical_mapping() = %d != %d\n",
+			    rc, expected_rc);
+			return false;
+		}
+	}
+	return true;
+}
+
+const char *test_mapping1(void)
+{
+	int rc;
+	
+	size_t buffer1_len = BUFFER1_PAGES * PAGE_SIZE;
+	size_t buffer2_len = BUFFER2_PAGES * PAGE_SIZE;
+	void *buffer1 = create_as_area(buffer1_len);
+	void *buffer2 = create_as_area(buffer2_len);
+	if (!buffer1 || !buffer2) {
+		return "Cannot allocate memory";
+	}
+	
+	touch_area(buffer1, buffer1_len);
+	touch_area(buffer2, buffer2_len);
+	
+	/* Now verify that mapping to physical frames exist. */
+	if (!VERIFY_MAPPING(buffer1, BUFFER1_PAGES, EOK)) {
+		return "Failed to find mapping (buffer1)";
+	}
+	if (!VERIFY_MAPPING(buffer2, BUFFER2_PAGES, EOK)) {
+		return "Failed to find mapping (buffer2)";
+	}
+	
+	/* Let's destroy the buffer1 area and access it again. */
+	rc = as_area_destroy(buffer1);
+	if (rc != EOK) {
+		return "Failed to destroy AS area";
+	}
+	if (!VERIFY_MAPPING(buffer1, BUFFER1_PAGES, ENOENT)) {
+		return "Mapping of destroyed area still exists";
+	}
+	
+	/* clean-up */
+	rc = as_area_destroy(buffer2);
+	if (rc != EOK) {
+		return "Failed to destroy AS area";
+	}
+	
+	return NULL;
+}
Index: uspace/app/tester/mm/mapping1.def
===================================================================
--- uspace/app/tester/mm/mapping1.def	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/tester/mm/mapping1.def	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,6 @@
+{
+	"mapping1",
+	"Page mapping test",
+	&test_mapping1,
+	true
+},
Index: uspace/app/tester/tester.c
===================================================================
--- uspace/app/tester/tester.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/app/tester/tester.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -64,4 +64,5 @@
 #include "mm/malloc2.def"
 #include "mm/malloc3.def"
+#include "mm/mapping1.def"
 #include "hw/serial/serial1.def"
 #include "hw/misc/virtchar1.def"
Index: uspace/app/tester/tester.h
===================================================================
--- uspace/app/tester/tester.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/app/tester/tester.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -97,4 +97,5 @@
 extern const char *test_malloc2(void);
 extern const char *test_malloc3(void);
+extern const char *test_mapping1(void);
 extern const char *test_serial1(void);
 extern const char *test_virtchar1(void);
Index: uspace/app/usbinfo/Makefile
===================================================================
--- uspace/app/usbinfo/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/usbinfo/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,48 @@
+#
+# Copyright (c) 2010 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+BINARY = usbinfo
+
+LIBS = \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS = \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+SOURCES = \
+	desctree.c \
+	dev.c \
+	dump.c \
+	info.c \
+	main.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/app/usbinfo/desctree.c
===================================================================
--- uspace/app/usbinfo/desctree.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/usbinfo/desctree.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbinfo
+ * @{
+ */
+/**
+ * @file
+ * Descriptor tree dump.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <str_error.h>
+#include <bool.h>
+
+#include <usb/usb.h>
+#include <usb/descriptor.h>
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+
+#include "usbinfo.h"
+#include <usb/dev/dp.h>
+
+static void browse_descriptor_tree_internal(usb_dp_parser_t *parser,
+    usb_dp_parser_data_t *data, uint8_t *root, size_t depth,
+    dump_descriptor_in_tree_t callback, void *arg)
+{
+	if (root == NULL) {
+		return;
+	}
+	callback(root, depth, arg);
+	uint8_t *child = usb_dp_get_nested_descriptor(parser, data, root);
+	do {
+		browse_descriptor_tree_internal(parser, data, child, depth + 1,
+		    callback, arg);
+		child = usb_dp_get_sibling_descriptor(parser, data,
+		    root, child);
+	} while (child != NULL);
+}
+
+void browse_descriptor_tree(uint8_t *descriptors, size_t descriptors_size,
+    usb_dp_descriptor_nesting_t *descriptor_nesting,
+    dump_descriptor_in_tree_t callback, size_t initial_depth, void *arg)
+{
+	usb_dp_parser_data_t data = {
+		.data = descriptors,
+		.size = descriptors_size,
+		.arg = NULL
+	};
+
+	usb_dp_parser_t parser = {
+		.nesting = descriptor_nesting
+	};
+
+	browse_descriptor_tree_internal(&parser, &data, descriptors,
+	    initial_depth, callback, arg);
+}
+
+/** @}
+ */
Index: uspace/app/usbinfo/dev.c
===================================================================
--- uspace/app/usbinfo/dev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/usbinfo/dev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbinfo
+ * @{
+ */
+/**
+ * @file
+ * Representation of queried device.
+ */
+#include <usb/dev/pipes.h>
+#include <errno.h>
+#include <str_error.h>
+#include <usb/dev/request.h>
+#include "usbinfo.h"
+
+usbinfo_device_t *prepare_device(const char *name,
+    devman_handle_t hc_handle, usb_address_t dev_addr)
+{
+	usbinfo_device_t *dev = malloc(sizeof(usbinfo_device_t));
+	if (dev == NULL) {
+		fprintf(stderr, NAME ": memory allocation failed.\n");
+		return NULL;
+	}
+
+	int rc;
+	bool transfer_started = false;
+
+	rc = usb_device_connection_initialize(&dev->wire, hc_handle, dev_addr);
+	if (rc != EOK) {
+		fprintf(stderr,
+		    NAME ": failed to create connection to device %s: %s.\n",
+		    name, str_error(rc));
+		goto leave;
+	}
+
+	rc = usb_pipe_initialize_default_control(&dev->ctrl_pipe,
+	    &dev->wire);
+	if (rc != EOK) {
+		fprintf(stderr,
+		    NAME ": failed to create default control pipe to %s: %s.\n",
+		    name, str_error(rc));
+		goto leave;
+	}
+
+	rc = usb_pipe_probe_default_control(&dev->ctrl_pipe);
+	if (rc != EOK) {
+		if (rc == ENOENT) {
+			fprintf(stderr, NAME ": " \
+			    "device %s not present or malfunctioning.\n",
+			    name);
+		} else {
+			fprintf(stderr, NAME ": " \
+			    "probing default control pipe of %s failed: %s.\n",
+			    name, str_error(rc));
+		}
+		goto leave;
+	}
+
+	usb_pipe_start_long_transfer(&dev->ctrl_pipe);
+	transfer_started = true;
+
+	rc = usb_request_get_device_descriptor(&dev->ctrl_pipe,
+	    &dev->device_descriptor);
+	if (rc != EOK) {
+		fprintf(stderr,
+		    NAME ": failed to retrieve device descriptor of %s: %s.\n",
+		    name, str_error(rc));
+		goto leave;
+	}
+
+	rc = usb_request_get_full_configuration_descriptor_alloc(
+	    &dev->ctrl_pipe, 0, (void **)&dev->full_configuration_descriptor,
+	    &dev->full_configuration_descriptor_size);
+	if (rc != EOK) {
+		fprintf(stderr, NAME ": " \
+		    "failed to retrieve configuration descriptor of %s: %s.\n",
+		    name, str_error(rc));
+		goto leave;
+	}
+
+	return dev;
+
+
+leave:
+	if (transfer_started) {
+		usb_pipe_end_long_transfer(&dev->ctrl_pipe);
+	}
+
+	free(dev);
+
+	return NULL;
+}
+
+void destroy_device(usbinfo_device_t *dev)
+{
+	usb_pipe_end_long_transfer(&dev->ctrl_pipe);
+	free(dev);
+}
+
+/** @}
+ */
Index: uspace/app/usbinfo/dump.c
===================================================================
--- uspace/app/usbinfo/dump.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/usbinfo/dump.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbinfo
+ * @{
+ */
+/**
+ * @file
+ * USB querying.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <str_error.h>
+#include <bool.h>
+
+#include <usb/usb.h>
+#include <usb/descriptor.h>
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+
+#include "usbinfo.h"
+#include <usb/dev/dp.h>
+
+#define INDENT "  "
+#define BYTES_PER_LINE 12
+
+
+const char *get_indent(size_t level)
+{
+	static const char *indents[] = {
+		INDENT,
+		INDENT INDENT,
+		INDENT INDENT INDENT,
+		INDENT INDENT INDENT INDENT,
+		INDENT INDENT INDENT INDENT INDENT
+	};
+	static size_t indents_count = sizeof(indents)/sizeof(indents[0]);
+	if (level >= indents_count) {
+		return indents[indents_count - 1];
+	}
+	return indents[level];
+}
+
+void dump_buffer(const char *msg, size_t indent,
+    const uint8_t *buffer, size_t length)
+{
+	if (msg != NULL) {
+		printf("%s\n", msg);
+	}
+
+	size_t i;
+	if (length > 0) {
+		printf("%s", get_indent(indent));
+	}
+	for (i = 0; i < length; i++) {
+		printf("0x%02X", buffer[i]);
+		if (((i > 0) && (((i+1) % BYTES_PER_LINE) == 0))
+		    || (i + 1 == length)) {
+			printf("\n");
+			if (i + 1 < length) {
+				printf("%s", get_indent(indent));
+			}
+		} else {
+			printf("  ");
+		}
+	}
+}
+
+void dump_usb_descriptor(uint8_t *descriptor, size_t size)
+{
+	printf("Device descriptor:\n");
+	usb_dump_standard_descriptor(stdout, get_indent(0), "\n",
+	    descriptor, size);
+}
+
+void dump_match_ids(match_id_list_t *matches, const char *line_prefix)
+{
+	link_t *link;
+	for (link = matches->ids.next;
+	    link != &matches->ids;
+	    link = link->next) {
+		match_id_t *match = list_get_instance(link, match_id_t, link);
+
+		printf("%s%3d %s\n", line_prefix, match->score, match->id);
+	}
+}
+
+static void dump_tree_descriptor(uint8_t *descriptor, size_t depth)
+{
+	if (descriptor == NULL) {
+		return;
+	}
+	int type = (int) *(descriptor + 1);
+	const char *name = "unknown";
+	switch (type) {
+#define _TYPE(descriptor_type) \
+		case USB_DESCTYPE_##descriptor_type: name = #descriptor_type; break
+		_TYPE(DEVICE);
+		_TYPE(CONFIGURATION);
+		_TYPE(STRING);
+		_TYPE(INTERFACE);
+		_TYPE(ENDPOINT);
+		_TYPE(HID);
+		_TYPE(HID_REPORT);
+		_TYPE(HID_PHYSICAL);
+		_TYPE(HUB);
+#undef _TYPE
+	}
+	printf("%s%s (0x%02X):\n", get_indent(depth), name, type);
+	usb_dump_standard_descriptor(stdout, get_indent(depth), "\n",
+	    descriptor, descriptor[0]);
+}
+
+static void dump_tree_internal(usb_dp_parser_t *parser, usb_dp_parser_data_t *data,
+    uint8_t *root, size_t depth)
+{
+	if (root == NULL) {
+		return;
+	}
+	dump_tree_descriptor(root, depth);
+	uint8_t *child = usb_dp_get_nested_descriptor(parser, data, root);
+	do {
+		dump_tree_internal(parser, data, child, depth + 1);
+		child = usb_dp_get_sibling_descriptor(parser, data, root, child);
+	} while (child != NULL);
+}
+
+static void dump_tree(usb_dp_parser_t *parser, usb_dp_parser_data_t *data)
+{
+	uint8_t *ptr = data->data;
+	printf("Descriptor tree:\n");
+	dump_tree_internal(parser, data, ptr, 0);
+}
+
+#define NESTING(parentname, childname) \
+	{ \
+		.child = USB_DESCTYPE_##childname, \
+		.parent = USB_DESCTYPE_##parentname, \
+	}
+#define LAST_NESTING { -1, -1 }
+
+static usb_dp_descriptor_nesting_t descriptor_nesting[] = {
+	NESTING(CONFIGURATION, INTERFACE),
+	NESTING(INTERFACE, ENDPOINT),
+	NESTING(INTERFACE, HUB),
+	NESTING(INTERFACE, HID),
+	NESTING(HID, HID_REPORT),
+	LAST_NESTING
+};
+
+static usb_dp_parser_t parser = {
+	.nesting = descriptor_nesting
+};
+
+void dump_descriptor_tree(uint8_t *descriptors, size_t length)
+{
+	usb_dp_parser_data_t data = {
+		.data = descriptors,
+		.size = length,
+		.arg = NULL
+	};
+
+	dump_tree(&parser, &data);
+}
+
+/** @}
+ */
Index: uspace/app/usbinfo/info.c
===================================================================
--- uspace/app/usbinfo/info.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/usbinfo/info.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,394 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbinfo
+ * @{
+ */
+/**
+ * @file
+ * Dumping of generic device properties.
+ */
+#include <stdio.h>
+#include <str_error.h>
+#include <errno.h>
+#include <usb/dev/pipes.h>
+#include <usb/dev/recognise.h>
+#include <usb/dev/request.h>
+#include <usb/classes/classes.h>
+#include <usb/classes/hub.h>
+#include "usbinfo.h"
+
+void dump_short_device_identification(usbinfo_device_t *dev)
+{
+	printf("%sDevice 0x%04x by vendor 0x%04x\n", get_indent(0),
+	    (int) dev->device_descriptor.product_id,
+	    (int) dev->device_descriptor.vendor_id);
+}
+
+static void dump_match_ids_from_interface(uint8_t *descriptor, size_t depth,
+    void *arg)
+{
+	if (depth != 1) {
+		return;
+	}
+	size_t descr_size = descriptor[0];
+	if (descr_size < sizeof(usb_standard_interface_descriptor_t)) {
+		return;
+	}
+	int descr_type = descriptor[1];
+	if (descr_type != USB_DESCTYPE_INTERFACE) {
+		return;
+	}
+
+	usbinfo_device_t *dev = (usbinfo_device_t *) arg;
+
+	usb_standard_interface_descriptor_t *iface
+	    = (usb_standard_interface_descriptor_t *) descriptor;
+
+	printf("%sInterface #%d match ids (%s, 0x%02x, 0x%02x)\n",
+	    get_indent(0),
+	    (int) iface->interface_number,
+	    usb_str_class(iface->interface_class),
+	    (int) iface->interface_subclass,
+	    (int) iface->interface_protocol);
+
+	match_id_list_t matches;
+	init_match_ids(&matches);
+	usb_device_create_match_ids_from_interface(&dev->device_descriptor,
+	    iface, &matches);
+	dump_match_ids(&matches, get_indent(1));
+	clean_match_ids(&matches);
+}
+
+void dump_device_match_ids(usbinfo_device_t *dev)
+{
+	match_id_list_t matches;
+	init_match_ids(&matches);
+	usb_device_create_match_ids_from_device_descriptor(
+	    &dev->device_descriptor, &matches);
+	printf("%sDevice match ids (0x%04x by 0x%04x, %s)\n", get_indent(0),
+	    (int) dev->device_descriptor.product_id,
+	    (int) dev->device_descriptor.vendor_id,
+	    usb_str_class(dev->device_descriptor.device_class));
+	dump_match_ids(&matches, get_indent(1));
+	clean_match_ids(&matches);
+
+	usb_dp_walk_simple(dev->full_configuration_descriptor,
+	    dev->full_configuration_descriptor_size,
+	    usb_dp_standard_descriptor_nesting,
+	    dump_match_ids_from_interface,
+	    dev);
+}
+
+static void dump_descriptor_tree_brief_device(const char *prefix,
+    usb_standard_device_descriptor_t *descriptor)
+{
+	printf("%sDevice (0x%04x by 0x%04x, %s, %zu configurations)\n", prefix,
+	    (int) descriptor->product_id,
+	    (int) descriptor->vendor_id,
+	    usb_str_class(descriptor->device_class),
+	    (size_t) descriptor->configuration_count);
+}
+
+static void dump_descriptor_tree_brief_configuration(const char *prefix,
+    usb_standard_configuration_descriptor_t *descriptor)
+{
+	printf("%sConfiguration #%d (%zu interfaces, total %zuB)\n", prefix,
+	    (int) descriptor->configuration_number,
+	    (size_t) descriptor->interface_count,
+	    (size_t) descriptor->total_length);
+}
+
+static void dump_descriptor_tree_brief_interface(const char *prefix,
+    usb_standard_interface_descriptor_t *descriptor)
+{
+	printf("%sInterface #%d (%s, 0x%02x, 0x%02x), alternate %d\n", prefix,
+	    (int) descriptor->interface_number,
+	    usb_str_class(descriptor->interface_class),
+	    (int) descriptor->interface_subclass,
+	    (int) descriptor->interface_protocol,
+	    (int) descriptor->alternate_setting);
+}
+
+static void dump_descriptor_tree_brief_endpoint(const char *prefix,
+    usb_standard_endpoint_descriptor_t *descriptor)
+{
+	usb_endpoint_t endpoint_no = descriptor->endpoint_address & 0xF;
+	usb_transfer_type_t transfer = descriptor->attributes & 0x3;
+	usb_direction_t direction = descriptor->endpoint_address & 0x80
+	    ? USB_DIRECTION_IN : USB_DIRECTION_OUT;
+	printf("%sEndpoint #%d (%s %s, %zu)\n", prefix,
+	    endpoint_no, usb_str_transfer_type(transfer),
+	    direction == USB_DIRECTION_IN ? "in" : "out",
+	    (size_t) descriptor->max_packet_size);
+}
+
+static void dump_descriptor_tree_brief_hid(const char *prefix,
+    usb_standard_hid_descriptor_t *descriptor)
+{
+	printf("%sHID (country %d, %d descriptors)\n", prefix,
+	    (int) descriptor->country_code,
+	    (int) descriptor->class_desc_count);
+}
+
+static void dump_descriptor_tree_brief_hub(const char *prefix,
+    usb_hub_descriptor_header_t *descriptor)
+{
+	printf("%shub (%d ports)\n", prefix,
+	    (int) descriptor->port_count);
+}
+
+
+static void dump_descriptor_tree_callback(uint8_t *descriptor,
+    size_t depth, void *arg)
+{
+	const char *indent = get_indent(depth + 1);
+
+	int descr_type = -1;
+	size_t descr_size = descriptor[0];
+	if (descr_size > 0) {
+		descr_type = descriptor[1];
+	}
+
+	switch (descr_type) {
+
+#define _BRANCH(type_enum, descriptor_type, callback) \
+	case type_enum: \
+		if (descr_size >= sizeof(descriptor_type)) { \
+			callback(indent, (descriptor_type *) descriptor); \
+			if (arg != NULL) { \
+				usb_dump_standard_descriptor(stdout, \
+				    get_indent(depth +2), "\n", \
+				    descriptor, descr_size); \
+			} \
+		} else { \
+			descr_type = -1; \
+		} \
+		break;
+
+		_BRANCH(USB_DESCTYPE_DEVICE,
+		    usb_standard_device_descriptor_t,
+		    dump_descriptor_tree_brief_device);
+		_BRANCH(USB_DESCTYPE_CONFIGURATION,
+		    usb_standard_configuration_descriptor_t,
+		    dump_descriptor_tree_brief_configuration);
+		_BRANCH(USB_DESCTYPE_INTERFACE,
+		    usb_standard_interface_descriptor_t,
+		    dump_descriptor_tree_brief_interface);
+		_BRANCH(USB_DESCTYPE_ENDPOINT,
+		    usb_standard_endpoint_descriptor_t,
+		    dump_descriptor_tree_brief_endpoint);
+		_BRANCH(USB_DESCTYPE_HID,
+		    usb_standard_hid_descriptor_t,
+		    dump_descriptor_tree_brief_hid);
+		/*
+		 * Probably useless, hub descriptor shall not be part of
+		 * configuration descriptor.
+		 */
+		_BRANCH(USB_DESCTYPE_HUB,
+		    usb_hub_descriptor_header_t,
+		    dump_descriptor_tree_brief_hub);
+
+		default:
+			break;
+	}
+
+	if (descr_type == -1) {
+		printf("%sInvalid descriptor.\n", indent);
+	}
+}
+
+void dump_descriptor_tree_brief(usbinfo_device_t *dev)
+{
+	dump_descriptor_tree_callback((uint8_t *)&dev->device_descriptor,
+	    (size_t) -1, NULL);
+	usb_dp_walk_simple(dev->full_configuration_descriptor,
+	    dev->full_configuration_descriptor_size,
+	    usb_dp_standard_descriptor_nesting,
+	    dump_descriptor_tree_callback,
+	    NULL);
+}
+
+void dump_descriptor_tree_full(usbinfo_device_t *dev)
+{
+	dump_descriptor_tree_callback((uint8_t *)&dev->device_descriptor,
+	    (size_t) -1, dev);
+	usb_dp_walk_simple(dev->full_configuration_descriptor,
+	    dev->full_configuration_descriptor_size,
+	    usb_dp_standard_descriptor_nesting,
+	    dump_descriptor_tree_callback,
+	    dev);
+}
+
+static void find_string_indexes_callback(uint8_t *descriptor,
+    size_t depth, void *arg)
+{
+	size_t descriptor_length = descriptor[0];
+	if (descriptor_length <= 1) {
+		return;
+	}
+
+	/*printf("Found string in %s->%s: %zu\n",
+	    #descr_struct, #descr_item, __str_index); */
+#define SET_STRING_INDEX(descr, mask, descr_type, descr_struct, descr_item) \
+	do { \
+		if ((descr)[1] == (descr_type)) { \
+			descr_struct *__type_descr = (descr_struct *) (descr); \
+			size_t __str_index = __type_descr->descr_item; \
+			if ((__str_index > 0) && (__str_index < 64)) { \
+				mask = (mask) | (1 << __str_index); \
+			} \
+		} \
+	} while (0)
+
+	uint64_t *mask = arg;
+
+#define SET_STR(descr_type, descr_struct, descr_item) \
+	SET_STRING_INDEX(descriptor, (*mask), descr_type, descr_struct, descr_item)
+
+	SET_STR(USB_DESCTYPE_DEVICE, usb_standard_device_descriptor_t,
+	    str_manufacturer);
+	SET_STR(USB_DESCTYPE_DEVICE, usb_standard_device_descriptor_t,
+	    str_product);
+	SET_STR(USB_DESCTYPE_DEVICE, usb_standard_device_descriptor_t,
+	    str_serial_number);
+	SET_STR(USB_DESCTYPE_CONFIGURATION, usb_standard_configuration_descriptor_t,
+	    str_configuration);
+	SET_STR(USB_DESCTYPE_INTERFACE, usb_standard_interface_descriptor_t,
+	    str_interface);
+}
+
+
+void dump_strings(usbinfo_device_t *dev)
+{
+	/* Get supported languages. */
+	l18_win_locales_t *langs;
+	size_t langs_count;
+	int rc = usb_request_get_supported_languages(&dev->ctrl_pipe,
+	    &langs, &langs_count);
+	if (rc != EOK) {
+		fprintf(stderr,
+		    NAME ": failed to get list of supported languages: %s.\n",
+		    str_error(rc));
+		return;
+	}
+
+	printf("%sString languages (%zu):", get_indent(0), langs_count);
+	size_t i;
+	for (i = 0; i < langs_count; i++) {
+		printf(" 0x%04x", (int) langs[i]);
+	}
+	printf(".\n");
+
+	/* Find used indexes. Device with more than 64 strings are very rare.
+	 */
+	uint64_t str_mask = 0;
+	find_string_indexes_callback((uint8_t *)&dev->device_descriptor, 0,
+	    &str_mask);
+	usb_dp_walk_simple(dev->full_configuration_descriptor,
+	    dev->full_configuration_descriptor_size,
+	    usb_dp_standard_descriptor_nesting,
+	    find_string_indexes_callback,
+	    &str_mask);
+
+	/* Get all strings and dump them. */
+	for (i = 0; i < langs_count; i++) {
+		l18_win_locales_t lang = langs[i];
+
+		printf("%sStrings in %s:\n", get_indent(0),
+		    str_l18_win_locale(lang));
+
+		size_t idx;
+		for (idx = 1; idx < 64; idx++) {
+			if ((str_mask & ((uint64_t)1 << idx)) == 0) {
+				continue;
+			}
+			char *string = NULL;
+			rc = usb_request_get_string(&dev->ctrl_pipe, idx, lang,
+			    &string);
+			if ((rc != EOK) && (rc != EEMPTY)) {
+				printf("%sWarn: failed to retrieve string #%zu: %s.\n",
+				    get_indent(1), idx, str_error(rc));
+				continue;
+			}
+			printf("%sString #%zu: \"%s\"\n", get_indent(1),
+			    idx, rc == EOK ? string : "");
+			if (string != NULL) {
+				free(string);
+			}
+		}
+	}
+}
+
+
+void dump_status(usbinfo_device_t *dev)
+{
+	int rc;
+	uint16_t device_status = 0;
+	uint16_t ctrl_pipe_status = 0;
+
+	/* Device status first. */
+	rc = usb_request_get_status(&dev->ctrl_pipe,
+	    USB_REQUEST_RECIPIENT_DEVICE, 0,
+	    &device_status);
+	if (rc != EOK) {
+		printf("%sFailed to get device status: %s.\n",
+		    get_indent(0), str_error(rc));
+		goto try_ctrl_pipe_status;
+	}
+
+	printf("%sDevice status 0x%04x: power=%s, remote-wakeup=%s.\n",
+	    get_indent(0),
+	    device_status,
+	    device_status & USB_DEVICE_STATUS_SELF_POWERED ? "self" : "bus",
+	    device_status & USB_DEVICE_STATUS_REMOTE_WAKEUP ? "yes" : "no");
+
+	/* Interface is not interesting, skipping ;-). */
+
+	/* Control endpoint zero. */
+try_ctrl_pipe_status:
+	rc = usb_request_get_status(&dev->ctrl_pipe,
+	    USB_REQUEST_RECIPIENT_ENDPOINT, 0,
+	    &ctrl_pipe_status);
+	if (rc != EOK) {
+		printf("%sFailed to get control endpoint status: %s.\n",
+		    get_indent(0), str_error(rc));
+		goto leave;
+	}
+
+	printf("%sControl endpoint zero status %04X: halted=%s.\n",
+	    get_indent(0),
+	    ctrl_pipe_status,
+	    ctrl_pipe_status & USB_ENDPOINT_STATUS_HALTED ? "yes" : "no");
+
+leave:
+	return;
+}
+
+/** @}
+ */
Index: uspace/app/usbinfo/main.c
===================================================================
--- uspace/app/usbinfo/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/usbinfo/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,222 @@
+/*
+ * Copyright (c) 2010-2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbinfo
+ * @{
+ */
+/**
+ * @file
+ * USB querying.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <str_error.h>
+#include <bool.h>
+#include <getopt.h>
+#include <devman.h>
+#include <devmap.h>
+#include <usb/hc.h>
+#include <usb/dev/pipes.h>
+#include "usbinfo.h"
+
+static void print_usage(char *app_name)
+{
+#define _INDENT "      "
+#define _OPTION(opt, description) \
+	printf(_INDENT opt "\n" _INDENT _INDENT description "\n")
+
+	printf(NAME ": query USB devices for descriptors\n\n");
+	printf("Usage: %s [options] device [device [device [ ... ]]]\n",
+	    app_name);
+	printf(_INDENT "The device is a devman path to the device.\n");
+
+	_OPTION("-h --help", "Print this help and exit.");
+	_OPTION("-i --identification", "Brief device identification.");
+	_OPTION("-m --match-ids", "Print match ids generated for the device.");
+	_OPTION("-t --descriptor-tree", "Print descriptor tree.");
+	_OPTION("-T --descriptor-tree-full", "Print detailed descriptor tree");
+	_OPTION("-s --strings", "Try to print all string descriptors.");
+	_OPTION("-S --status", "Get status of the device.");
+
+	printf("\n");
+	printf("If no option is specified, `-i' is considered default.\n");
+	printf("\n");
+
+#undef _OPTION
+#undef _INDENT
+}
+
+static struct option long_options[] = {
+	{"help", no_argument, NULL, 'h'},
+	{"identification", no_argument, NULL, 'i'},
+	{"match-ids", no_argument, NULL, 'm'},
+	{"descriptor-tree", no_argument, NULL, 't'},
+	{"descriptor-tree-full", no_argument, NULL, 'T'},
+	{"strings", no_argument, NULL, 's'},
+	{"status", no_argument, NULL, 'S'},
+	{0, 0, NULL, 0}
+};
+static const char *short_options = "himtTsS";
+
+static usbinfo_action_t actions[] = {
+	{
+		.opt = 'i',
+		.action = dump_short_device_identification,
+		.active = false
+	},
+	{
+		.opt = 'm',
+		.action = dump_device_match_ids,
+		.active = false
+	},
+	{
+		.opt = 't',
+		.action = dump_descriptor_tree_brief,
+		.active = false
+	},
+	{
+		.opt = 'T',
+		.action = dump_descriptor_tree_full,
+		.active = false
+	},
+	{
+		.opt = 's',
+		.action = dump_strings,
+		.active = false
+	},
+	{
+		.opt = 'S',
+		.action = dump_status,
+		.active = false
+	},
+	{
+		.opt = 0
+	}
+};
+
+int main(int argc, char *argv[])
+{
+	if (argc <= 1) {
+		print_usage(argv[0]);
+		return -1;
+	}
+
+	/*
+	 * Process command-line options. They determine what shall be
+	 * done with the device.
+	 */
+	int opt;
+	do {
+		opt = getopt_long(argc, argv,
+		    short_options, long_options, NULL);
+		switch (opt) {
+			case -1:
+				break;
+			case '?':
+				print_usage(argv[0]);
+				return 1;
+			case 'h':
+				print_usage(argv[0]);
+				return 0;
+			default: {
+				int idx = 0;
+				while (actions[idx].opt != 0) {
+					if (actions[idx].opt == opt) {
+						actions[idx].active = true;
+						break;
+					}
+					idx++;
+				}
+				break;
+			}
+		}
+	} while (opt > 0);
+
+	/* Set the default action. */
+	int idx = 0;
+	bool something_active = false;
+	while (actions[idx].opt != 0) {
+		if (actions[idx].active) {
+			something_active = true;
+			break;
+		}
+		idx++;
+	}
+	if (!something_active) {
+		actions[0].active = true;
+	}
+
+	/*
+	 * Go through all devices given on the command line and run the
+	 * specified actions.
+	 */
+	int i;
+	for (i = optind; i < argc; i++) {
+		char *devpath = argv[i];
+
+		/* The initialization is here only to make compiler happy. */
+		devman_handle_t hc_handle = 0;
+		usb_address_t dev_addr = 0;
+		int rc = usb_resolve_device_handle(devpath,
+		    &hc_handle, &dev_addr, NULL);
+		if (rc != EOK) {
+			fprintf(stderr, NAME ": device `%s' not found "
+			    "or not of USB kind, skipping.\n",
+			    devpath);
+			continue;
+		}
+
+		usbinfo_device_t *dev = prepare_device(devpath,
+		    hc_handle, dev_addr);
+		if (dev == NULL) {
+			continue;
+		}
+
+		/* Run actions the user specified. */
+		printf("%s\n", devpath);
+
+		int action = 0;
+		while (actions[action].opt != 0) {
+			if (actions[action].active) {
+				actions[action].action(dev);
+			}
+			action++;
+		}
+
+		/* Destroy the control pipe (close the session etc.). */
+		destroy_device(dev);
+	}
+
+	return 0;
+}
+
+
+/** @}
+ */
Index: uspace/app/usbinfo/usbinfo.h
===================================================================
--- uspace/app/usbinfo/usbinfo.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/usbinfo/usbinfo.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbinfo
+ * @{
+ */
+/** @file
+ * Common header for usbinfo application.
+ */
+#ifndef USBINFO_USBINFO_H_
+#define USBINFO_USBINFO_H_
+
+#include <usb/usb.h>
+#include <usb/descriptor.h>
+#include <usb/dev/pipes.h>
+#include <usb/debug.h>
+#include <usb/dev/dp.h>
+#include <ipc/devman.h>
+
+typedef struct {
+	usb_pipe_t ctrl_pipe;
+	usb_device_connection_t wire;
+	usb_standard_device_descriptor_t device_descriptor;
+	uint8_t *full_configuration_descriptor;
+	size_t full_configuration_descriptor_size;
+} usbinfo_device_t;
+
+typedef struct {
+	int opt;
+	void (*action)(usbinfo_device_t *dev);
+	bool active;
+} usbinfo_action_t;
+
+
+#define NAME "usbinfo"
+
+void dump_buffer(const char *, size_t, const uint8_t *, size_t);
+const char *get_indent(size_t);
+void dump_match_ids(match_id_list_t *, const char *);
+void dump_usb_descriptor(uint8_t *, size_t);
+void dump_descriptor_tree(uint8_t *, size_t);
+
+static inline void internal_error(int err)
+{
+	fprintf(stderr, NAME ": internal error (%s).\n", str_error(err));
+}
+
+usbinfo_device_t *prepare_device(const char *, devman_handle_t, usb_address_t);
+void destroy_device(usbinfo_device_t *);
+
+typedef void (*dump_descriptor_in_tree_t)(uint8_t *, size_t, void *);
+void browse_descriptor_tree(uint8_t *, size_t, usb_dp_descriptor_nesting_t *,
+    dump_descriptor_in_tree_t, size_t, void *);
+
+
+void dump_short_device_identification(usbinfo_device_t *);
+void dump_device_match_ids(usbinfo_device_t *);
+void dump_descriptor_tree_brief(usbinfo_device_t *);
+void dump_descriptor_tree_full(usbinfo_device_t *);
+void dump_strings(usbinfo_device_t *);
+void dump_status(usbinfo_device_t *);
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/app/vuhid/Makefile
===================================================================
--- uspace/app/vuhid/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,58 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+# acronym for virtual USB human input device
+# (it is really annoying to write long names)
+BINARY = vuh
+
+LIBS = \
+	$(LIBUSBVIRT_PREFIX)/libusbvirt.a \
+	$(LIBUSBHID_PREFIX)/libusbhid.a \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a
+EXTRA_CFLAGS = \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBUSBHID_PREFIX)/include \
+	-I$(LIBUSBVIRT_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+
+SOURCES_INTERFACES = \
+	hids/bootkbd.c
+
+SOURCES = \
+	main.c \
+	device.c \
+	ifaces.c \
+	stdreq.c \
+	$(SOURCES_INTERFACES)
+	
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/app/vuhid/device.c
===================================================================
--- uspace/app/vuhid/device.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/device.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,360 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbvirthid
+ * @{
+ */
+/**
+ * @file
+ * Virtual USB HID device.
+ */
+#include "virthid.h"
+#include <errno.h>
+#include <stdio.h>
+#include <str.h>
+#include <assert.h>
+#include <usb/classes/classes.h>
+
+static int on_data_from_device(usbvirt_device_t *dev,
+    usb_endpoint_t ep, usb_transfer_type_t tr_type,
+    void *data, size_t data_size, size_t *actual_size)
+{
+	vuhid_data_t *vuhid = dev->device_data;
+	vuhid_interface_t *iface = vuhid->in_endpoints_mapping[ep];
+	if (iface == NULL) {
+		return ESTALL;
+	}
+
+	if (iface->on_data_in == NULL) {
+		return EBADCHECKSUM;
+	}
+
+	return iface->on_data_in(iface, data, data_size, actual_size);
+}
+
+static int on_data_to_device(usbvirt_device_t *dev,
+    usb_endpoint_t ep, usb_transfer_type_t tr_type,
+    void *data, size_t data_size)
+{
+	vuhid_data_t *vuhid = dev->device_data;
+	vuhid_interface_t *iface = vuhid->out_endpoints_mapping[ep];
+	if (iface == NULL) {
+		return ESTALL;
+	}
+
+	if (iface->on_data_out == NULL) {
+		return EBADCHECKSUM;
+	}
+
+	return iface->on_data_out(iface, data, data_size);
+}
+
+static int interface_life_fibril(void *arg)
+{
+	vuhid_interface_t *iface = arg;
+	vuhid_data_t *hid_data = iface->vuhid_data;
+
+	if (iface->live != NULL) {
+		iface->live(iface);
+	}
+
+	fibril_mutex_lock(&hid_data->iface_count_mutex);
+	hid_data->iface_died_count++;
+	fibril_condvar_broadcast(&hid_data->iface_count_cv);
+	fibril_mutex_unlock(&hid_data->iface_count_mutex);
+
+	return EOK;
+}
+
+
+static vuhid_interface_t *find_interface_by_id(vuhid_interface_t **ifaces,
+    const char *id)
+{
+	if ((ifaces == NULL) || (id == NULL)) {
+		return NULL;
+	}
+	while (*ifaces != NULL) {
+		if (str_cmp((*ifaces)->id, id) == 0) {
+			return *ifaces;
+		}
+		ifaces++;
+	}
+
+	return NULL;
+}
+
+int add_interface_by_id(vuhid_interface_t **interfaces, const char *id,
+    usbvirt_device_t *dev)
+{
+	vuhid_interface_t *iface = find_interface_by_id(interfaces, id);
+	if (iface == NULL) {
+		return ENOENT;
+	}
+
+	if ((iface->in_data_size == 0) && (iface->out_data_size == 0)) {
+		return EEMPTY;
+	}
+
+	/* Already used interface. */
+	if (iface->vuhid_data != NULL) {
+		return EEXISTS;
+	}
+
+	vuhid_data_t *hid_data = dev->device_data;
+
+	/* Check that we have not run out of available endpoints. */
+	if ((iface->in_data_size > 0)
+	    && (hid_data->in_endpoint_first_free >= VUHID_ENDPOINT_MAX)) {
+		return ELIMIT;
+	}
+	if ((iface->out_data_size > 0)
+	    && (hid_data->out_endpoint_first_free >= VUHID_ENDPOINT_MAX)) {
+		return ELIMIT;
+	}
+
+	if (dev->descriptors->configuration->descriptor->interface_count >=
+	    VUHID_INTERFACE_MAX) {
+		return ELIMIT;
+	}
+
+	/*
+	 * How may descriptors we would add?
+	 */
+	/* Start with interface descriptor. */
+	size_t new_descriptor_count = 1;
+	/* Having in/out data size positive means we would need endpoint. */
+	if (iface->in_data_size > 0) {
+		new_descriptor_count++;
+	}
+	if (iface->out_data_size > 0) {
+		new_descriptor_count++;
+	}
+	/* Having report descriptor means adding the HID descriptor. */
+	if (iface->report_descriptor != NULL) {
+		new_descriptor_count++;
+	}
+
+	/* From now on, in case of errors, we goto to error_leave */
+	int rc;
+
+	/*
+	 * Prepare new descriptors.
+	 */
+	size_t descr_count = 0;
+	size_t total_descr_size = 0;
+	usb_standard_interface_descriptor_t *descr_iface = NULL;
+	hid_descriptor_t *descr_hid = NULL;
+	usb_standard_endpoint_descriptor_t *descr_ep_in = NULL;
+	usb_standard_endpoint_descriptor_t *descr_ep_out = NULL;
+
+	size_t ep_count = 0;
+	if (iface->in_data_size > 0) {
+		ep_count++;
+	}
+	if (iface->out_data_size > 0) {
+		ep_count++;
+	}
+	assert(ep_count > 0);
+
+	/* Interface would be needed always. */
+	descr_iface = malloc(sizeof(usb_standard_interface_descriptor_t));
+	if (descr_iface == NULL) {
+		rc = ENOMEM;
+		goto error_leave;
+	}
+	descr_count++;
+	total_descr_size += sizeof(usb_standard_interface_descriptor_t);
+	descr_iface->length = sizeof(usb_standard_interface_descriptor_t);
+	descr_iface->descriptor_type = USB_DESCTYPE_INTERFACE;
+	descr_iface->interface_number
+	    = dev->descriptors->configuration->descriptor->interface_count;
+	descr_iface->alternate_setting = 0;
+	descr_iface->endpoint_count = ep_count;
+	descr_iface->interface_class = USB_CLASS_HID;
+	descr_iface->interface_subclass = iface->usb_subclass;
+	descr_iface->interface_protocol = iface->usb_protocol;
+	descr_iface->str_interface = 0;
+
+	/* Create the HID descriptor. */
+	if (iface->report_descriptor != NULL) {
+		descr_hid = malloc(sizeof(hid_descriptor_t));
+		if (descr_hid == NULL) {
+			rc = ENOMEM;
+			goto error_leave;
+		}
+		descr_count++;
+		total_descr_size += sizeof(hid_descriptor_t);
+		descr_hid->length = sizeof(hid_descriptor_t);
+		descr_hid->type = USB_DESCTYPE_HID;
+		descr_hid->hid_spec_release = 0x101;
+		descr_hid->country_code = 0;
+		descr_hid->descriptor_count = 1;
+		descr_hid->descriptor1_type = USB_DESCTYPE_HID_REPORT;
+		descr_hid->descriptor1_length = iface->report_descriptor_size;
+	}
+
+	/* Prepare the endpoint descriptors. */
+	if (iface->in_data_size > 0) {
+		descr_ep_in = malloc(sizeof(usb_standard_endpoint_descriptor_t));
+		if (descr_ep_in == NULL) {
+			rc = ENOMEM;
+			goto error_leave;
+		}
+		descr_count++;
+		total_descr_size += sizeof(usb_standard_endpoint_descriptor_t);
+		descr_ep_in->length = sizeof(usb_standard_endpoint_descriptor_t);
+		descr_ep_in->descriptor_type = USB_DESCTYPE_ENDPOINT;
+		descr_ep_in->endpoint_address
+		    = 0x80 | hid_data->in_endpoint_first_free;
+		descr_ep_in->attributes = 3;
+		descr_ep_in->max_packet_size = iface->in_data_size;
+		descr_ep_in->poll_interval = 10;
+	}
+	if (iface->out_data_size > 0) {
+		descr_ep_out = malloc(sizeof(usb_standard_endpoint_descriptor_t));
+		if (descr_ep_out == NULL) {
+			rc = ENOMEM;
+			goto error_leave;
+		}
+		descr_count++;
+		total_descr_size += sizeof(usb_standard_endpoint_descriptor_t);
+		descr_ep_out->length = sizeof(usb_standard_endpoint_descriptor_t);
+		descr_ep_out->descriptor_type = USB_DESCTYPE_ENDPOINT;
+		descr_ep_out->endpoint_address
+		    = 0x00 | hid_data->out_endpoint_first_free;
+		descr_ep_out->attributes = 3;
+		descr_ep_out->max_packet_size = iface->out_data_size;
+		descr_ep_out->poll_interval = 10;
+	}
+
+	/* Extend existing extra descriptors with these ones. */
+	usbvirt_device_configuration_extras_t *extra_descriptors
+	    = dev->descriptors->configuration->extra;
+	extra_descriptors = realloc(extra_descriptors,
+	    sizeof(usbvirt_device_configuration_extras_t)
+	    * (dev->descriptors->configuration->extra_count + descr_count));
+	if (extra_descriptors == NULL) {
+		rc = ENOMEM;
+		goto error_leave;
+	}
+
+	/* Launch the "life" fibril. */
+	iface->vuhid_data = hid_data;
+	fid_t life_fibril = fibril_create(interface_life_fibril, iface);
+	if (life_fibril == 0) {
+		rc = ENOMEM;
+		goto error_leave;
+	}
+
+	/* Allocation is okay, we can (actually have to now) overwrite the
+	 * original pointer.
+	 */
+	dev->descriptors->configuration->extra = extra_descriptors;
+	extra_descriptors += dev->descriptors->configuration->extra_count;
+
+	/* Initialize them. */
+#define _APPEND_DESCRIPTOR(descriptor) \
+	do { \
+		if ((descriptor) != NULL) { \
+			extra_descriptors->data = (uint8_t *) (descriptor); \
+			extra_descriptors->length = (descriptor)->length; \
+			extra_descriptors++; \
+		} \
+	} while (0)
+
+	_APPEND_DESCRIPTOR(descr_iface);
+	_APPEND_DESCRIPTOR(descr_hid);
+	_APPEND_DESCRIPTOR(descr_ep_in);
+	_APPEND_DESCRIPTOR(descr_ep_out);
+#undef _APPEND_DESCRIPTOR
+	dev->descriptors->configuration->extra_count += descr_count;
+
+	/*
+	 * Final changes.
+	 * Increase the necessary counters, make endpoint mapping.
+	 *
+	 */
+	if (iface->in_data_size > 0) {
+		hid_data->in_endpoints_mapping[hid_data->in_endpoint_first_free]
+		    = iface;
+		dev->ops->data_in[hid_data->in_endpoint_first_free]
+		    = on_data_from_device;
+		hid_data->in_endpoint_first_free++;
+	}
+	if (iface->out_data_size > 0) {
+		hid_data->out_endpoints_mapping[hid_data->out_endpoint_first_free]
+		    = iface;
+		dev->ops->data_out[hid_data->out_endpoint_first_free]
+		    = on_data_to_device;
+		hid_data->out_endpoint_first_free++;
+	}
+
+	hid_data->interface_mapping[
+	    dev->descriptors->configuration->descriptor->interface_count]
+	    = iface;
+
+	dev->descriptors->configuration->descriptor->interface_count++;
+	dev->descriptors->configuration->descriptor->total_length
+	    += total_descr_size;
+
+	hid_data->iface_count++;
+	fibril_add_ready(life_fibril);
+
+	return EOK;
+
+error_leave:
+	if (descr_iface != NULL) {
+		free(descr_iface);
+	}
+	if (descr_hid != NULL) {
+		free(descr_hid);
+	}
+	if (descr_ep_in != NULL) {
+		free(descr_ep_in);
+	}
+	if (descr_ep_out != NULL) {
+		free(descr_ep_out);
+	}
+
+	return rc;
+}
+
+void wait_for_interfaces_death(usbvirt_device_t *dev)
+{
+	vuhid_data_t *hid_data = dev->device_data;
+
+	fibril_mutex_lock(&hid_data->iface_count_mutex);
+	while (hid_data->iface_died_count < hid_data->iface_count) {
+		fibril_condvar_wait(&hid_data->iface_count_cv,
+		    &hid_data->iface_count_mutex);
+	}
+	fibril_mutex_unlock(&hid_data->iface_count_mutex);
+}
+
+/** @}
+ */
Index: uspace/app/vuhid/hids/bootkbd.c
===================================================================
--- uspace/app/vuhid/hids/bootkbd.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/hids/bootkbd.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbvirthid
+ * @{
+ */
+/** @file
+ *
+ */
+#include "../virthid.h"
+#include <errno.h>
+#include <usb/debug.h>
+#include <usb/hid/hid.h>
+#include <usb/hid/usages/core.h>
+
+#include "../report.h"
+
+uint8_t report_descriptor[] = {
+	STD_USAGE_PAGE(USB_HIDUT_PAGE_GENERIC_DESKTOP),
+	USAGE1(USB_HIDUT_USAGE_GENERIC_DESKTOP_KEYBOARD),
+	START_COLLECTION(COLLECTION_APPLICATION),
+		STD_USAGE_PAGE(USB_HIDUT_PAGE_KEYBOARD),
+		USAGE_MINIMUM1(224),
+		USAGE_MAXIMUM1(231),
+		LOGICAL_MINIMUM1(0),
+		LOGICAL_MAXIMUM1(1),
+		REPORT_SIZE1(1),
+		REPORT_COUNT1(8),
+		/* Modifiers */
+		INPUT(IOF_DATA | IOF_VARIABLE | IOF_ABSOLUTE),
+		REPORT_COUNT1(1),
+		REPORT_SIZE1(8),
+		/* Reserved */
+		INPUT(IOF_CONSTANT),
+		REPORT_COUNT1(5),
+		REPORT_SIZE1(1),
+		STD_USAGE_PAGE(USB_HIDUT_PAGE_LED),
+		USAGE_MINIMUM1(1),
+		USAGE_MAXIMUM1(5),
+		/* LED states */
+		OUTPUT(IOF_DATA | IOF_VARIABLE | IOF_ABSOLUTE),
+		REPORT_COUNT1(1),
+		REPORT_SIZE1(3),
+		/* LED states padding */
+		OUTPUT(IOF_CONSTANT),
+		REPORT_COUNT1(6),
+		REPORT_SIZE1(8),
+		LOGICAL_MINIMUM1(0),
+		LOGICAL_MAXIMUM1(101),
+		STD_USAGE_PAGE(USB_HIDUT_PAGE_KEYBOARD),
+		USAGE_MINIMUM1(0),
+		USAGE_MAXIMUM1(101),
+		/* Key array */
+		INPUT(IOF_DATA | IOF_ARRAY),
+	END_COLLECTION()
+};
+
+#define INPUT_SIZE 8
+
+static uint8_t in_data[] = {
+	     0, 0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	     0, 0, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00, // Caps Lock
+	     0, 0, 0x53, 0x00, 0x00, 0x00, 0x00, 0x00, // Num Lock
+	     0, 0, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00, // Caps Lock
+	1 << 2, 0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	1 << 2, 0, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00,
+	1 << 2, 0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	     0, 0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+static size_t in_data_count = sizeof(in_data)/INPUT_SIZE;
+// FIXME - locking
+static size_t in_data_position = 0;
+
+static int on_data_in(vuhid_interface_t *iface,
+    void *buffer, size_t buffer_size, size_t *act_buffer_size)
+{
+	static size_t last_pos = (size_t) -1;
+	size_t pos = in_data_position;
+	if (pos >= in_data_count) {
+		return EBADCHECKSUM;
+	}
+
+	if (last_pos == pos) {
+		return ENAK;
+	}
+
+	if (buffer_size > INPUT_SIZE) {
+		buffer_size = INPUT_SIZE;
+	}
+
+	if (act_buffer_size != NULL) {
+		*act_buffer_size = buffer_size;
+	}
+
+	memcpy(buffer, in_data + pos * INPUT_SIZE, buffer_size);
+	last_pos = pos;
+
+	return EOK;
+}
+
+static int on_data_out(vuhid_interface_t *iface,
+    void *buffer, size_t buffer_size)
+{
+	if (buffer_size == 0) {
+		return EEMPTY;
+	}
+	uint8_t leds = ((uint8_t *) buffer)[0];
+#define _GET_LED(index, signature) \
+	(((leds) & (1 << index)) ? (signature) : '-')
+	usb_log_info("%s: LEDs = %c%c%c%c%c\n",
+	    iface->name,
+	    _GET_LED(0, '0'), _GET_LED(1, 'A'), _GET_LED(2, 's'),
+	    _GET_LED(3, 'c'), _GET_LED(4, 'k'));
+#undef _GET_LED
+	return EOK;
+}
+
+
+static void live(vuhid_interface_t *iface)
+{
+	async_usleep(1000 * 1000 * 5);
+	usb_log_debug("Boot keyboard comes to life...\n");
+	while (in_data_position < in_data_count) {
+		async_usleep(1000 * 500);
+		in_data_position++;
+	}
+	usb_log_debug("Boot keyboard died.\n");
+}
+
+
+vuhid_interface_t vuhid_interface_bootkbd = {
+	.id = "boot",
+	.name = "boot keyboard",
+	.usb_subclass = USB_HID_SUBCLASS_BOOT,
+	.usb_protocol = USB_HID_PROTOCOL_KEYBOARD,
+
+	.report_descriptor = report_descriptor,
+	.report_descriptor_size = sizeof(report_descriptor),
+
+	.in_data_size = INPUT_SIZE,
+	.on_data_in = on_data_in,
+
+	.out_data_size = 1,
+	.on_data_out = on_data_out,
+
+	.live = live,
+
+	.vuhid_data = NULL
+};
+
+/**
+ * @}
+ */
Index: uspace/app/vuhid/ifaces.c
===================================================================
--- uspace/app/vuhid/ifaces.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/ifaces.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbvirthid
+ * @{
+ */
+/**
+ * @file
+ * List of known interfaces.
+ */
+#include <stdlib.h>
+#include "ifaces.h"
+
+extern vuhid_interface_t vuhid_interface_bootkbd;
+
+vuhid_interface_t *available_hid_interfaces[] = {
+	&vuhid_interface_bootkbd,
+	NULL
+};
+
+
+/** @}
+ */
Index: uspace/app/vuhid/ifaces.h
===================================================================
--- uspace/app/vuhid/ifaces.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/ifaces.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbvirthid
+ * @{
+ */
+/** @file
+ *
+ */
+#ifndef VUHID_IFACES_H_
+#define VUHID_IFACES_H_
+
+#include "virthid.h"
+
+extern vuhid_interface_t *available_hid_interfaces[];
+
+#endif
+/**
+ * @}
+ */
Index: uspace/app/vuhid/items.h
===================================================================
--- uspace/app/vuhid/items.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/items.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbvirtkbd
+ * @{
+ */
+/** @file
+ * @brief HID Item related functions.
+ */
+#ifndef VUK_ITEM_H_
+#define VUK_ITEM_H_
+
+#include <sys/types.h>
+
+typedef uint8_t report_descriptor_data_t[];
+
+/* Item types. */
+#define ITEM_MAIN 0
+#define ITEM_GLOBAL 1
+#define ITEM_LOCAL 2
+
+
+
+/* Item tags. */
+
+/* Main item tags. */
+#define TAG_INPUT 8
+#define TAG_OUTPUT 9
+#define TAG_FEATURE 11
+#define TAG_COLLECTION 10
+#define TAG_END_COLLECTION 12
+
+/* Global item tags. */
+#define TAG_USAGE_PAGE 0
+#define TAG_LOGICAL_MINIMUM 1
+#define TAG_LOGICAL_MAXIMUM 2
+#define TAG_REPORT_SIZE 7
+#define TAG_REPORT_COUNT 9
+
+/* Local item tags. */
+#define TAG_USAGE 0
+#define TAG_USAGE_MINIMUM 1
+#define TAG_USAGE_MAXIMUM 2
+
+
+/* Bits for Input, Output and Feature items. */
+#define _IOF(value, shift) ((value) << (shift))
+#define IOF_DATA _IOF(0, 0)
+#define IOF_CONSTANT _IOF(1, 0)
+#define IOF_ARRAY _IOF(0, 1)
+#define IOF_VARIABLE _IOF(1, 1)
+#define IOF_ABSOLUTE _IOF(0, 2)
+#define IOF_RELATIVE _IOF(1, 2)
+/* ... */
+
+/* Collection types. */
+#define COLLECTION_PHYSICAL 0x00
+#define COLLECTION_APPLICATION 0x01
+
+
+/** Creates item prefix.
+ * @param size Item size.
+ * @param type Item type.
+ * @param tag Item tag.
+ */
+#define BUILD_ITEM_PREFIX(size, type, tag) \
+	((size) | ((type) << 2) | ((tag) << 4))
+
+/** Create no-data item.
+ * @param type Item type.
+ * @param tag Item tag.
+ */
+#define ITEM_CREATE0(type, tag) \
+	BUILD_ITEM_PREFIX(0, type, tag)
+
+/** Create item with 1-byte data.
+ * @param type Item type.
+ * @param tag Item tag.
+ * @param data Item data (single byte).
+ */
+#define ITEM_CREATE1(type, tag, data) \
+	BUILD_ITEM_PREFIX(1, type, tag), data
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/app/vuhid/main.c
===================================================================
--- uspace/app/vuhid/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,203 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbvirthid
+ * @{
+ */
+/**
+ * @file
+ * Virtual USB HID device.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/usb.h>
+#include <usb/descriptor.h>
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+#include <usb/hid/hid.h>
+#include <usbvirt/device.h>
+
+#include "virthid.h"
+#include "ifaces.h"
+#include "stdreq.h"
+
+static usbvirt_control_request_handler_t endpoint_zero_handlers[] = {
+	{
+		.req_direction = USB_DIRECTION_IN,
+		.req_type = USB_REQUEST_TYPE_STANDARD,
+		.req_recipient = USB_REQUEST_RECIPIENT_INTERFACE,
+		.request = USB_DEVREQ_GET_DESCRIPTOR,
+		.name = "Get_Descriptor",
+		.callback = req_get_descriptor
+	},
+	{
+		.req_direction = USB_DIRECTION_OUT,
+		.req_recipient = USB_REQUEST_RECIPIENT_INTERFACE,
+		.req_type = USB_REQUEST_TYPE_CLASS,
+		.request = USB_HIDREQ_SET_PROTOCOL,
+		.name = "Set_Protocol",
+		.callback = req_set_protocol
+	},
+	{
+		.req_direction = USB_DIRECTION_OUT,
+		.req_recipient = USB_REQUEST_RECIPIENT_INTERFACE,
+		.req_type = USB_REQUEST_TYPE_CLASS,
+		.request = USB_HIDREQ_SET_REPORT,
+		.name = "Set_Report",
+		.callback = req_set_report
+	},
+	{
+		.callback = NULL
+	}
+};
+
+/** Keyboard callbacks.
+ * We abuse the fact that static variables are zero-filled.
+ */
+static usbvirt_device_ops_t hid_ops = {
+	.control = endpoint_zero_handlers,
+};
+
+/** Standard configuration descriptor. */
+static usb_standard_configuration_descriptor_t std_configuration_descriptor = {
+	.length = sizeof(usb_standard_configuration_descriptor_t),
+	.descriptor_type = USB_DESCTYPE_CONFIGURATION,
+	/* Will be patched at runtime. */
+	.total_length = sizeof(usb_standard_configuration_descriptor_t),
+	.interface_count = 0,
+	.configuration_number = 1,
+	.str_configuration = 0,
+	.attributes = 128, /* denotes bus-powered device */
+	.max_power = 50
+};
+
+/** Standard device descriptor. */
+static usb_standard_device_descriptor_t std_device_descriptor = {
+	.length = sizeof(usb_standard_device_descriptor_t),
+	.descriptor_type = USB_DESCTYPE_DEVICE,
+	.usb_spec_version = 0x110,
+	.device_class = USB_CLASS_USE_INTERFACE,
+	.device_subclass = 0,
+	.device_protocol = 0,
+	.max_packet_size = 64,
+	.configuration_count = 1
+};
+
+/** HID configuration. */
+usbvirt_device_configuration_t configuration = {
+	.descriptor = &std_configuration_descriptor,
+	.extra = NULL,
+	.extra_count = 0
+};
+
+/** HID standard descriptors. */
+usbvirt_descriptors_t descriptors = {
+	.device = &std_device_descriptor,
+	.configuration = &configuration,
+	.configuration_count = 1,
+};
+
+static vuhid_data_t vuhid_data = {
+	.in_endpoints_mapping = { NULL },
+	.in_endpoint_first_free = 1,
+	.out_endpoints_mapping = { NULL },
+	.out_endpoint_first_free = 1,
+
+	.iface_count = 0,
+	.iface_died_count = 0
+	// mutex and CV must be initialized elsewhere
+};
+
+
+/** Keyboard device.
+ * Rest of the items will be initialized later.
+ */
+static usbvirt_device_t hid_dev = {
+	.ops = &hid_ops,
+	.descriptors = &descriptors,
+	.name = "HID",
+	.device_data = &vuhid_data
+};
+
+
+int main(int argc, char * argv[])
+{
+	int rc;
+
+	usb_log_enable(USB_LOG_LEVEL_DEBUG2, "vusbhid");
+
+	fibril_mutex_initialize(&vuhid_data.iface_count_mutex);
+	fibril_condvar_initialize(&vuhid_data.iface_count_cv);
+
+	/* Determine which interfaces to initialize. */
+	int i;
+	for (i = 1; i < argc; i++) {
+		rc = add_interface_by_id(available_hid_interfaces, argv[i],
+		    &hid_dev);
+		if (rc != EOK) {
+			fprintf(stderr, "Failed to add device `%s': %s.\n",
+			    argv[i], str_error(rc));
+		} else {
+			printf("Added device `%s'.\n", argv[i]);
+		}
+	}
+
+	for (i = 0; i < (int) hid_dev.descriptors->configuration->extra_count; i++) {
+		usb_log_debug("Found extra descriptor: %s.\n",
+		    usb_debug_str_buffer(
+		        hid_dev.descriptors->configuration->extra[i].data,
+		        hid_dev.descriptors->configuration->extra[i].length,
+		        0));
+	}
+
+	rc = usbvirt_device_plug(&hid_dev, "/virt/usbhc/hc");
+	if (rc != EOK) {
+		printf("Unable to start communication with VHCD: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+	
+	printf("Connected to VHCD...\n");
+
+	wait_for_interfaces_death(&hid_dev);
+	
+	printf("Terminating...\n");
+	
+	usbvirt_device_unplug(&hid_dev);
+
+	return 0;
+}
+
+
+/** @}
+ */
Index: uspace/app/vuhid/report.h
===================================================================
--- uspace/app/vuhid/report.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/report.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbvirtkbd
+ * @{
+ */
+/** @file
+ * @brief HID Report Descriptor.
+ */
+#ifndef VUK_REPORT_H_
+#define VUK_REPORT_H_
+
+#include "items.h"
+
+/** Use standard Usage Page. */
+#define STD_USAGE_PAGE(page) \
+	ITEM_CREATE1(ITEM_GLOBAL, TAG_USAGE_PAGE, page)
+
+/** Usage with one byte usage ID. */
+#define USAGE1(usage_id) \
+	ITEM_CREATE1(ITEM_LOCAL, TAG_USAGE, usage_id)
+
+/** Start a collection. */
+#define START_COLLECTION(collection) \
+	ITEM_CREATE1(ITEM_MAIN, TAG_COLLECTION, collection)
+
+/** End a collection. */
+#define END_COLLECTION() \
+	ITEM_CREATE0(ITEM_MAIN, TAG_END_COLLECTION)
+
+
+#define USAGE_MINIMUM1(value) \
+	ITEM_CREATE1(ITEM_LOCAL, TAG_USAGE_MINIMUM, value)
+	
+#define USAGE_MAXIMUM1(value) \
+	ITEM_CREATE1(ITEM_LOCAL, TAG_USAGE_MAXIMUM, value)
+	
+#define LOGICAL_MINIMUM1(value) \
+	ITEM_CREATE1(ITEM_GLOBAL, TAG_LOGICAL_MINIMUM, value)
+
+#define LOGICAL_MAXIMUM1(value) \
+	ITEM_CREATE1(ITEM_GLOBAL, TAG_LOGICAL_MAXIMUM, value)
+
+#define REPORT_SIZE1(size) \
+	ITEM_CREATE1(ITEM_GLOBAL, TAG_REPORT_SIZE, size)
+
+#define REPORT_COUNT1(count) \
+	ITEM_CREATE1(ITEM_GLOBAL, TAG_REPORT_COUNT, count)
+	
+#define INPUT(modifiers) \
+	ITEM_CREATE1(ITEM_MAIN, TAG_INPUT, modifiers)
+
+#define OUTPUT(modifiers) \
+	ITEM_CREATE1(ITEM_MAIN, TAG_OUTPUT, modifiers)
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/app/vuhid/stdreq.c
===================================================================
--- uspace/app/vuhid/stdreq.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/stdreq.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbvirthid
+ * @{
+ */
+/**
+ * @file
+ *
+ */
+#include <errno.h>
+#include <usb/debug.h>
+#include <usb/descriptor.h>
+#include "stdreq.h"
+#include "virthid.h"
+
+#define VUHID_DATA(vuhid, device) \
+	vuhid_data_t *vuhid = device->device_data
+
+int req_get_descriptor(usbvirt_device_t *device,
+    const usb_device_request_setup_packet_t *setup_packet,
+    uint8_t *data, size_t *act_size)
+{
+	VUHID_DATA(vuhid, device);
+
+	if (setup_packet->value_high == USB_DESCTYPE_HID_REPORT) {
+		vuhid_interface_t *iface
+		    = vuhid->interface_mapping[setup_packet->index];
+		if (iface == NULL) {
+			return EFORWARD;
+		}
+		if (iface->report_descriptor != NULL) {
+			usbvirt_control_reply_helper(setup_packet,
+			    data, act_size,
+			    iface->report_descriptor,
+			    iface->report_descriptor_size);
+			return EOK;
+		} else {
+			return ENOENT;
+		}
+	}
+	
+	/* Let the framework handle all the rest. */
+	return EFORWARD;
+}
+
+int req_set_protocol(usbvirt_device_t *device,
+    const usb_device_request_setup_packet_t *setup_packet,
+    uint8_t *data, size_t *act_size)
+{
+	VUHID_DATA(vuhid, device);
+
+	size_t iface_index = setup_packet->index;
+	int protocol = setup_packet->value;
+
+	// FIXME - check ranges
+	vuhid_interface_t *iface = vuhid->interface_mapping[iface_index];
+	if (iface == NULL) {
+		return ENOENT;
+	}
+	iface->set_protocol = protocol;
+
+	return EOK;
+}
+
+int req_set_report(usbvirt_device_t *device,
+    const usb_device_request_setup_packet_t *setup_packet,
+    uint8_t *data, size_t *act_size)
+{
+	VUHID_DATA(vuhid, device);
+
+	size_t iface_index = setup_packet->index;
+
+	// FIXME - check ranges
+	vuhid_interface_t *iface = vuhid->interface_mapping[iface_index];
+	if (iface == NULL) {
+		return ENOENT;
+	}
+
+	size_t data_length = setup_packet->length;
+	if (iface->on_data_out == NULL) {
+		return ENOTSUP;
+	}
+
+	/* SET_REPORT is translated to data out */
+	int rc = iface->on_data_out(iface, data, data_length);
+
+	return rc;
+}
+
+
+
+/** @}
+ */
Index: uspace/app/vuhid/stdreq.h
===================================================================
--- uspace/app/vuhid/stdreq.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/stdreq.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbvirthid
+ * @{
+ */
+/** @file
+ * Device request handlers.
+ */
+#ifndef VUHID_STDREQ_H_
+#define VUHID_STDREQ_H_
+
+#include <usbvirt/device.h>
+
+int req_get_descriptor(usbvirt_device_t *device,
+    const usb_device_request_setup_packet_t *setup_packet,
+    uint8_t *data, size_t *act_size);
+
+int req_set_protocol(usbvirt_device_t *device,
+    const usb_device_request_setup_packet_t *setup_packet,
+    uint8_t *data, size_t *act_size);
+
+int req_set_report(usbvirt_device_t *device,
+    const usb_device_request_setup_packet_t *setup_packet,
+    uint8_t *data, size_t *act_size);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/app/vuhid/virthid.h
===================================================================
--- uspace/app/vuhid/virthid.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/app/vuhid/virthid.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup usbvirthid
+ * @{
+ */
+/** @file
+ *
+ */
+#ifndef VUHID_VIRTHID_H_
+#define VUHID_VIRTHID_H_
+
+#include <usb/usb.h>
+#include <usbvirt/device.h>
+#include <fibril_synch.h>
+
+#define VUHID_ENDPOINT_MAX USB11_ENDPOINT_MAX
+#define VUHID_INTERFACE_MAX 8
+
+typedef struct vuhid_interface vuhid_interface_t;
+
+typedef struct {
+	vuhid_interface_t *in_endpoints_mapping[VUHID_ENDPOINT_MAX];
+	size_t in_endpoint_first_free;
+	vuhid_interface_t *out_endpoints_mapping[VUHID_ENDPOINT_MAX];
+	size_t out_endpoint_first_free;
+	vuhid_interface_t *interface_mapping[VUHID_INTERFACE_MAX];
+
+	fibril_mutex_t iface_count_mutex;
+	fibril_condvar_t iface_count_cv;
+	size_t iface_count;
+	size_t iface_died_count;
+} vuhid_data_t;
+
+struct vuhid_interface {
+	const char *name;
+	const char *id;
+	int usb_subclass;
+	int usb_protocol;
+
+	uint8_t *report_descriptor;
+	size_t report_descriptor_size;
+
+	size_t in_data_size;
+	size_t out_data_size;
+
+	int (*on_data_in)(vuhid_interface_t *, void *, size_t, size_t *);
+	int (*on_data_out)(vuhid_interface_t *, void *, size_t);
+	void (*live)(vuhid_interface_t *);
+
+	int set_protocol;
+
+	void *interface_data;
+
+	vuhid_data_t *vuhid_data;
+};
+
+typedef struct {
+	uint8_t length;
+	uint8_t type;
+	uint16_t hid_spec_release;
+	uint8_t country_code;
+	uint8_t descriptor_count;
+	uint8_t descriptor1_type;
+	uint16_t descriptor1_length;
+} __attribute__ ((packed)) hid_descriptor_t;
+
+int add_interface_by_id(vuhid_interface_t **, const char *, usbvirt_device_t *);
+void wait_for_interfaces_death(usbvirt_device_t *);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/doc/doxygroups.h
===================================================================
--- uspace/doc/doxygroups.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/doc/doxygroups.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -150,5 +150,5 @@
 	 * @endcond
 	 */
-	
+
 /**
  * @defgroup emul Emulation Libraries
@@ -165,2 +165,163 @@
 	 * @ingroup emul
 	 */
+
+/**
+ * @defgroup usb USB
+ * @ingroup uspace
+ * @brief USB support for HelenOS.
+ */
+	/**
+	 * @defgroup libusb Base USB library
+	 * @ingroup usb
+	 * @brief Common definitions for any driver or application
+	 * dealing with USB.
+	 */
+
+	/**
+	 * @defgroup libusbdev USB library for device drivers
+	 * @ingroup usb
+	 * @brief Library for writing drivers of endpoint devices (functions).
+	 */
+
+	/**
+	 * @defgroup libusbhost USB library for host controller drivers
+	 * @ingroup usb
+	 * @brief Library for writing host controller drivers.
+	 */
+
+	/**
+	 * @defgroup libusbhid USB library for HID devices
+	 * @ingroup usb
+	 * @brief Library for writing USB HID drivers.
+	 */
+
+	/**
+	 * @defgroup usbvirt USB virtualization
+	 * @ingroup usb
+	 * @brief Support for virtual USB devices.
+	 */
+
+		/**
+		 * @defgroup libusbvirt USB virtualization library
+		 * @ingroup usbvirt
+		 * @brief Library for creating virtual USB devices.
+		 */
+
+		/**
+		 * @defgroup drvusbvhc Virtual USB host controller
+		 * @ingroup usbvirt
+		 * @brief Driver simulating work of USB host controller.
+		 */
+
+		/**
+		 * @defgroup usbvirthub Virtual USB hub
+		 * @ingroup usbvirt
+		 * @brief Extra virtual USB hub for virtual host controller.
+		 * @details
+		 * Some of the sources are shared with virtual host controller,
+		 * see @ref drvusbvhc for the rest of the files.
+		 */
+
+		/**
+		 * @defgroup usbvirtkbd Virtual USB keybaord
+		 * @ingroup usbvirt
+		 * @brief Virtual USB keyboard for virtual host controller.
+		 */
+
+	/**
+	 * @defgroup usbinfo USB info application
+	 * @ingroup usb
+	 * @brief Application for querying USB devices.
+	 * @details
+	 * The intended usage of this application is to query new USB devices
+	 * for their descriptors etc. to simplify driver writing.
+	 */
+
+	/**
+	 * @defgroup lsusb HelenOS version of lsusb command
+	 * @ingroup usb
+	 * @brief Application for listing USB host controllers.
+	 * @details
+	 * List all found host controllers.
+	 */
+
+	/**
+	 * @defgroup drvusbmid USB multi interface device driver
+	 * @ingroup usb
+	 * @brief USB multi interface device driver
+	 * @details
+	 * This driver serves as a mini hub (or bus) driver for devices
+	 * that have the class defined at interface level (those devices
+	 * usually have several interfaces).
+	 *
+	 * The term multi interface device driver (MID) was borrowed
+	 * Solaris operating system.
+	 */
+
+	/**
+	 * @defgroup drvusbhub USB hub driver
+	 * @ingroup usb
+	 * @brief USB hub driver.
+	 */
+
+	/**
+	 * @defgroup drvusbhid USB HID driver
+	 * @ingroup usb
+	 * @brief USB driver for HID devices.
+	 */
+
+	/**
+	 * @defgroup drvusbmouse USB mouse driver
+	 * @ingroup usb
+	 * @brief USB driver for mouse with boot protocol.
+	 */
+
+	/**
+	 * @defgroup drvusbmast USB mass storage driver
+	 * @ingroup usb
+	 * @brief USB driver for mass storage devices (bulk-only protocol).
+	 * This driver is a only a stub and is currently used only for
+	 * testing that bulk transfers work.
+	 */
+
+	/**
+	 * @defgroup drvusbuhci UHCI driver
+	 * @ingroup usb
+	 * @brief Drivers for USB UHCI host controller and root hub.
+	 */
+
+		/**
+		 * @defgroup drvusbuhcirh UHCI root hub driver
+		 * @ingroup drvusbuhci
+		 * @brief Driver for UHCI complaint root hub.
+		 */
+
+		/**
+		 * @defgroup drvusbuhcihc UHCI host controller driver
+		 * @ingroup drvusbuhci
+		 * @brief Driver for UHCI complaint USB host controller.
+		 */
+
+	/**
+	 * @defgroup drvusbohci OHCI driver
+	 * @ingroup usb
+	 * @brief Driver for OHCI host controller.
+	 */
+
+	/**
+	 * @defgroup drvusbehci EHCI driver
+	 * @ingroup usb
+	 * @brief Driver for EHCI host controller.
+	 */
+
+	/**
+	 * @defgroup drvusbfallback USB fallback driver
+	 * @ingroup usb
+	 * @brief Fallback driver for any USB device.
+	 * @details
+	 * The purpose of this driver is to simplify querying of unknown
+	 * devices from within HelenOS (without a driver, no node at all
+	 * may appear under /dev/devices).
+	 */
+
+
Index: uspace/doc/main_usb.h
===================================================================
--- uspace/doc/main_usb.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/doc/main_usb.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,26 @@
+/**
+ @mainpage USB support for HelenOS
+
+This is reference manual for USB subsystem for HelenOS.
+
+HelenOS is a microkernel operating system where most of the functionality
+is provided by userspace tasks rather than system calls.
+This includes file system service, networking and also device drivers.
+
+USB is a standard for communication between host computers and computer
+peripherals.
+The advantage of USB over other kinds of connection between a computer
+and a peripheral is its flexibility.
+USB supports plugging and unplugging of devices without need to turn
+off any of the components.
+The data flow model is designed to accommodate together peripherals
+with different transfer characteristics.
+
+Adding support for USB devices to HelenOS shall improve the usability
+of the system in general even if the support concerns only USB 1.1 and
+the only peripheral drivers are for keyboards and mice.
+
+This reference documentation can be found also on-line at homepage
+of HelenOS USB project at http://helenos-usb.sourceforge.net/
+
+*/
Index: uspace/drv/ehci-hcd/Makefile
===================================================================
--- uspace/drv/ehci-hcd/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ehci-hcd/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,47 @@
+#
+# Copyright (c) 2011 Jan Vesely
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+
+LIBS = \
+	$(LIBUSBHOST_PREFIX)/libusbhost.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBHOST_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+BINARY = ehci-hcd
+
+SOURCES = \
+	hc_iface.c \
+	main.c \
+	pci.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/ehci-hcd/ehci-hcd.ma
===================================================================
--- uspace/drv/ehci-hcd/ehci-hcd.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ehci-hcd/ehci-hcd.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,39 @@
+10 pci/ven=1002&dev=4345
+10 pci/ven=1002&dev=4386
+10 pci/ven=1002&dev=4396
+10 pci/ven=1002&dev=4373
+10 pci/ven=1022&dev=7463
+10 pci/ven=1022&dev=7808
+10 pci/ven=102f&dev=01b5
+10 pci/ven=10cf&dev=1415
+10 pci/ven=10de&dev=00e8
+10 pci/ven=10de&dev=055f
+10 pci/ven=10de&dev=056a
+10 pci/ven=10de&dev=077c
+10 pci/ven=10de&dev=077e
+10 pci/ven=10de&dev=0aa6
+10 pci/ven=10de&dev=0aa9
+10 pci/ven=10de&dev=0aaa
+10 pci/ven=10de&dev=0d9d
+10 pci/ven=1166&dev=0414
+10 pci/ven=1166&dev=0416
+10 pci/ven=1414&dev=5805
+10 pci/ven=1414&dev=5807
+10 pci/ven=15ad&dev=0770
+10 pci/ven=17a0&dev=8084
+10 pci/ven=8086&dev=24cd
+10 pci/ven=8086&dev=24dd
+10 pci/ven=8086&dev=265c
+10 pci/ven=8086&dev=268c
+10 pci/ven=8086&dev=27cc
+10 pci/ven=8086&dev=2836
+10 pci/ven=8086&dev=283a
+10 pci/ven=8086&dev=293a
+10 pci/ven=8086&dev=293c
+10 pci/ven=8086&dev=3a3a
+10 pci/ven=8086&dev=3a3c
+10 pci/ven=8086&dev=3a6a
+10 pci/ven=8086&dev=3a6c
+10 pci/ven=8086&dev=8117
+10 pci/ven=8086&dev=8807
+10 pci/ven=8086&dev=880f
Index: uspace/drv/ehci-hcd/ehci.h
===================================================================
--- uspace/drv/ehci-hcd/ehci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ehci-hcd/ehci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbehci
+ * @{
+ */
+/** @file
+ * Common EHCI definitions.
+ */
+#ifndef DRV_EHCI_EHCI_H
+#define DRV_EHCI_EHCI_H
+
+#include <usbhc_iface.h>
+
+#define NAME "ehci-hcd"
+
+extern usbhc_iface_t ehci_hc_iface;
+
+#endif
+/**
+ * @}
+ */
+
Index: uspace/drv/ehci-hcd/hc_iface.c
===================================================================
--- uspace/drv/ehci-hcd/hc_iface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ehci-hcd/hc_iface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,326 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbehci
+ * @{
+ */
+/** @file
+ * USB-HC interface implementation.
+ */
+#include <ddf/driver.h>
+#include <ddf/interrupt.h>
+#include <device/hw_res.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb_iface.h>
+#include <usb/ddfiface.h>
+#include <usb/debug.h>
+
+#include "ehci.h"
+
+#define UNSUPPORTED(methodname) \
+	usb_log_warning("Unsupported interface method `%s()' in %s:%d.\n", \
+	    methodname, __FILE__, __LINE__)
+
+/** Found free USB address.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] speed Speed of the device that will get this address.
+ * @param[out] address Non-null pointer where to store the free address.
+ * @return Error code.
+ */
+static int request_address(ddf_fun_t *fun, usb_speed_t speed,
+    usb_address_t *address)
+{
+	UNSUPPORTED("request_address");
+
+	return ENOTSUP;
+}
+
+/** Bind USB address with device devman handle.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] address USB address of the device.
+ * @param[in] handle Devman handle of the device.
+ * @return Error code.
+ */
+static int bind_address(ddf_fun_t *fun,
+    usb_address_t address, devman_handle_t handle)
+{
+	UNSUPPORTED("bind_address");
+
+	return ENOTSUP;
+}
+
+/** Find device handle by USB address.
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address Address in question.
+ * @param[out] handle Where to store device handle if found.
+ * @return Error code.
+ */
+static int find_by_address(ddf_fun_t *fun, usb_address_t address,
+    devman_handle_t *handle)
+{
+	UNSUPPORTED("find_by_address");
+
+	return ENOTSUP;
+}
+
+/** Release previously requested address.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] address USB address to be released.
+ * @return Error code.
+ */
+static int release_address(ddf_fun_t *fun, usb_address_t address)
+{
+	UNSUPPORTED("release_address");
+
+	return ENOTSUP;
+}
+
+/** Register endpoint for bandwidth reservation.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] address USB address of the device.
+ * @param[in] speed Endpoint speed (invalid means to use device one).
+ * @param[in] endpoint Endpoint number.
+ * @param[in] transfer_type USB transfer type.
+ * @param[in] direction Endpoint data direction.
+ * @param[in] max_packet_size Max packet size of the endpoint.
+ * @param[in] interval Polling interval.
+ * @return Error code.
+ */
+static int register_endpoint(ddf_fun_t *fun,
+    usb_address_t address, usb_speed_t speed, usb_endpoint_t endpoint,
+    usb_transfer_type_t transfer_type, usb_direction_t direction,
+    size_t max_packet_size, unsigned int interval)
+{
+	UNSUPPORTED("register_endpoint");
+
+	return ENOTSUP;
+}
+
+/** Unregister endpoint (free some bandwidth reservation).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] address USB address of the device.
+ * @param[in] endpoint Endpoint number.
+ * @param[in] direction Endpoint data direction.
+ * @return Error code.
+ */
+static int unregister_endpoint(ddf_fun_t *fun, usb_address_t address,
+    usb_endpoint_t endpoint, usb_direction_t direction)
+{
+	UNSUPPORTED("unregister_endpoint");
+
+	return ENOTSUP;
+}
+
+/** Schedule interrupt out transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Data to be sent (in USB endianess, allocated and deallocated
+ *	by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int interrupt_out(ddf_fun_t *fun, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	UNSUPPORTED("interrupt_out");
+
+	return ENOTSUP;
+}
+
+/** Schedule interrupt in transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Buffer where to store the data (in USB endianess,
+ *	allocated and deallocated by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int interrupt_in(ddf_fun_t *fun, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	UNSUPPORTED("interrupt_in");
+
+	return ENOTSUP;
+}
+
+/** Schedule bulk out transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Data to be sent (in USB endianess, allocated and deallocated
+ *	by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int bulk_out(ddf_fun_t *fun, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	UNSUPPORTED("bulk_out");
+
+	return ENOTSUP;
+}
+
+/** Schedule bulk in transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Buffer where to store the data (in USB endianess,
+ *	allocated and deallocated by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int bulk_in(ddf_fun_t *fun, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	UNSUPPORTED("bulk_in");
+
+	return ENOTSUP;
+}
+
+/** Schedule control write transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] setup_packet Setup packet buffer (in USB endianess, allocated
+ *	and deallocated by the caller).
+ * @param[in] setup_packet_size Size of @p setup_packet buffer in bytes.
+ * @param[in] data_buffer Data buffer (in USB endianess, allocated and
+ *	deallocated by the caller).
+ * @param[in] data_buffer_size Size of @p data_buffer buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int control_write(ddf_fun_t *fun, usb_target_t target,
+    void *setup_packet, size_t setup_packet_size,
+    void *data_buffer, size_t data_buffer_size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	UNSUPPORTED("control_write");
+
+	return ENOTSUP;
+}
+
+/** Schedule control read transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] setup_packet Setup packet buffer (in USB endianess, allocated
+ *	and deallocated by the caller).
+ * @param[in] setup_packet_size Size of @p setup_packet buffer in bytes.
+ * @param[in] data_buffer Buffer where to store the data (in USB endianess,
+ *	allocated and deallocated by the caller).
+ * @param[in] data_buffer_size Size of @p data_buffer buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int control_read(ddf_fun_t *fun, usb_target_t target,
+    void *setup_packet, size_t setup_packet_size,
+    void *data_buffer, size_t data_buffer_size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	UNSUPPORTED("control_read");
+
+	return ENOTSUP;
+}
+
+/** Host controller interface implementation for EHCI. */
+usbhc_iface_t ehci_hc_iface = {
+	.request_address = request_address,
+	.bind_address = bind_address,
+	.find_by_address = find_by_address,
+	.release_address = release_address,
+
+	.register_endpoint = register_endpoint,
+	.unregister_endpoint = unregister_endpoint,
+
+	.interrupt_out = interrupt_out,
+	.interrupt_in = interrupt_in,
+
+	.bulk_out = bulk_out,
+	.bulk_in = bulk_in,
+
+	.control_write = control_write,
+	.control_read = control_read
+};
+
+/**
+ * @}
+ */
Index: uspace/drv/ehci-hcd/main.c
===================================================================
--- uspace/drv/ehci-hcd/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ehci-hcd/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbehci
+ * @{
+ */
+/** @file
+ * Main routines of EHCI driver.
+ */
+#include <ddf/driver.h>
+#include <ddf/interrupt.h>
+#include <device/hw_res.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb_iface.h>
+#include <usb/ddfiface.h>
+#include <usb/debug.h>
+
+#include "pci.h"
+#include "ehci.h"
+
+static int ehci_add_device(ddf_dev_t *device);
+/*----------------------------------------------------------------------------*/
+static driver_ops_t ehci_driver_ops = {
+	.add_device = ehci_add_device,
+};
+/*----------------------------------------------------------------------------*/
+static driver_t ehci_driver = {
+	.name = NAME,
+	.driver_ops = &ehci_driver_ops
+};
+static ddf_dev_ops_t hc_ops = {
+	.interfaces[USBHC_DEV_IFACE] = &ehci_hc_iface,
+};
+
+/*----------------------------------------------------------------------------*/
+/** Initializes a new ddf driver instance of EHCI hcd.
+ *
+ * @param[in] device DDF instance of the device to initialize.
+ * @return Error code.
+ */
+static int ehci_add_device(ddf_dev_t *device)
+{
+	assert(device);
+#define CHECK_RET_RETURN(ret, message...) \
+if (ret != EOK) { \
+	usb_log_error(message); \
+	return ret; \
+}
+
+	uintptr_t reg_base = 0;
+	size_t reg_size = 0;
+	int irq = 0;
+
+	int ret = pci_get_my_registers(device, &reg_base, &reg_size, &irq);
+	CHECK_RET_RETURN(ret,
+	    "Failed to get memory addresses for %" PRIun ": %s.\n",
+	    device->handle, str_error(ret));
+	usb_log_info("Memory mapped regs at 0x%" PRIxn " (size %zu), IRQ %d.\n",
+	    reg_base, reg_size, irq);
+
+	ret = pci_disable_legacy(device, reg_base, reg_size, irq);
+	CHECK_RET_RETURN(ret,
+	    "Failed to disable legacy USB: %s.\n", str_error(ret));
+
+	ddf_fun_t *hc_fun = ddf_fun_create(device, fun_exposed, "ehci-hc");
+	if (hc_fun == NULL) {
+		usb_log_error("Failed to create EHCI function.\n");
+		return ENOMEM;
+	}
+	hc_fun->ops = &hc_ops;
+
+	ret = ddf_fun_bind(hc_fun);
+	CHECK_RET_RETURN(ret,
+	    "Failed to bind EHCI function: %s.\n",
+	    str_error(ret));
+	ret = ddf_fun_add_to_class(hc_fun, USB_HC_DDF_CLASS_NAME);
+	CHECK_RET_RETURN(ret,
+	    "Failed to add EHCI to HC class: %s.\n",
+	    str_error(ret));
+
+	usb_log_info("Controlling new EHCI device `%s' (handle %" PRIun ").\n",
+	    device->name, device->handle);
+
+	return EOK;
+#undef CHECK_RET_RETURN
+}
+/*----------------------------------------------------------------------------*/
+/** Initializes global driver structures (NONE).
+ *
+ * @param[in] argc Nmber of arguments in argv vector (ignored).
+ * @param[in] argv Cmdline argument vector (ignored).
+ * @return Error code.
+ *
+ * Driver debug level is set here.
+ */
+int main(int argc, char *argv[])
+{
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+	return ddf_driver_main(&ehci_driver);
+}
+/**
+ * @}
+ */
Index: uspace/drv/ehci-hcd/pci.c
===================================================================
--- uspace/drv/ehci-hcd/pci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ehci-hcd/pci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,375 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * @addtogroup drvusbehci
+ * @{
+ */
+/**
+ * @file
+ * PCI related functions needed by the EHCI driver.
+ */
+#include <errno.h>
+#include <str_error.h>
+#include <assert.h>
+#include <as.h>
+#include <devman.h>
+#include <ddi.h>
+#include <libarch/ddi.h>
+#include <device/hw_res.h>
+
+#include <usb/debug.h>
+#include <pci_dev_iface.h>
+
+#include "pci.h"
+
+#define PAGE_SIZE_MASK 0xfffff000
+
+#define HCC_PARAMS_OFFSET 0x8
+#define HCC_PARAMS_EECP_MASK 0xff
+#define HCC_PARAMS_EECP_OFFSET 8
+
+#define CMD_OFFSET 0x0
+#define STS_OFFSET 0x4
+#define INT_OFFSET 0x8
+#define CFG_OFFSET 0x40
+
+#define USBCMD_RUN 1
+#define USBSTS_HALTED (1 << 12)
+
+#define USBLEGSUP_OFFSET 0
+#define USBLEGSUP_BIOS_CONTROL (1 << 16)
+#define USBLEGSUP_OS_CONTROL (1 << 24)
+#define USBLEGCTLSTS_OFFSET 4
+
+#define DEFAULT_WAIT 1000
+#define WAIT_STEP 10
+
+#define PCI_READ(size) \
+do { \
+	const int parent_phone = \
+	    devman_parent_device_connect(dev->handle, IPC_FLAG_BLOCKING);\
+	if (parent_phone < 0) {\
+		return parent_phone; \
+	} \
+	sysarg_t add = (sysarg_t)address; \
+	sysarg_t val; \
+	const int ret = \
+	    async_req_2_1(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE), \
+	        IPC_M_CONFIG_SPACE_READ_##size, add, &val); \
+	assert(value); \
+	*value = val; \
+	async_hangup(parent_phone); \
+	return ret; \
+} while(0)
+
+static int pci_read32(const ddf_dev_t *dev, int address, uint32_t *value)
+{
+	PCI_READ(32);
+}
+static int pci_read16(const ddf_dev_t *dev, int address, uint16_t *value)
+{
+	PCI_READ(16);
+}
+static int pci_read8(const ddf_dev_t *dev, int address, uint8_t *value)
+{
+	PCI_READ(8);
+}
+#define PCI_WRITE(size) \
+do { \
+	const int parent_phone = \
+	    devman_parent_device_connect(dev->handle, IPC_FLAG_BLOCKING);\
+	if (parent_phone < 0) {\
+		return parent_phone; \
+	} \
+	sysarg_t add = (sysarg_t)address; \
+	sysarg_t val = value; \
+	const int ret = \
+	    async_req_3_0(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE), \
+	        IPC_M_CONFIG_SPACE_WRITE_##size, add, val); \
+	async_hangup(parent_phone); \
+	return ret; \
+} while(0)
+
+static int pci_write32(const ddf_dev_t *dev, int address, uint32_t value)
+{
+	PCI_WRITE(32);
+}
+static int pci_write16(const ddf_dev_t *dev, int address, uint16_t value)
+{
+	PCI_WRITE(16);
+}
+static int pci_write8(const ddf_dev_t *dev, int address, uint8_t value)
+{
+	PCI_WRITE(8);
+}
+
+/** Get address of registers and IRQ for given device.
+ *
+ * @param[in] dev Device asking for the addresses.
+ * @param[out] mem_reg_address Base address of the memory range.
+ * @param[out] mem_reg_size Size of the memory range.
+ * @param[out] irq_no IRQ assigned to the device.
+ * @return Error code.
+ */
+int pci_get_my_registers(const ddf_dev_t *dev,
+    uintptr_t *mem_reg_address, size_t *mem_reg_size, int *irq_no)
+{
+	assert(dev != NULL);
+
+	const int parent_phone =
+	    devman_parent_device_connect(dev->handle, IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+	int rc;
+
+	hw_resource_list_t hw_resources;
+	rc = hw_res_get_resource_list(parent_phone, &hw_resources);
+	if (rc != EOK) {
+		async_hangup(parent_phone);
+		return rc;
+	}
+
+	uintptr_t mem_address = 0;
+	size_t mem_size = 0;
+	bool mem_found = false;
+
+	int irq = 0;
+	bool irq_found = false;
+
+	size_t i;
+	for (i = 0; i < hw_resources.count; i++) {
+		hw_resource_t *res = &hw_resources.resources[i];
+		switch (res->type)
+		{
+		case INTERRUPT:
+			irq = res->res.interrupt.irq;
+			irq_found = true;
+			usb_log_debug2("Found interrupt: %d.\n", irq);
+			break;
+
+		case MEM_RANGE:
+			if (res->res.mem_range.address != 0
+			    && res->res.mem_range.size != 0 ) {
+				mem_address = res->res.mem_range.address;
+				mem_size = res->res.mem_range.size;
+				usb_log_debug2("Found mem: %" PRIxn" %zu.\n",
+				    mem_address, mem_size);
+				mem_found = true;
+				}
+		default:
+			break;
+		}
+	}
+
+	if (mem_found && irq_found) {
+		*mem_reg_address = mem_address;
+		*mem_reg_size = mem_size;
+		*irq_no = irq;
+		rc = EOK;
+	} else {
+		rc = ENOENT;
+	}
+
+	async_hangup(parent_phone);
+	return rc;
+}
+/*----------------------------------------------------------------------------*/
+/** Calls the PCI driver with a request to enable interrupts
+ *
+ * @param[in] device Device asking for interrupts
+ * @return Error code.
+ */
+int pci_enable_interrupts(const ddf_dev_t *device)
+{
+	const int parent_phone =
+	    devman_parent_device_connect(device->handle, IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+	const bool enabled = hw_res_enable_interrupt(parent_phone);
+	async_hangup(parent_phone);
+	return enabled ? EOK : EIO;
+}
+/*----------------------------------------------------------------------------*/
+/** Implements BIOS handoff routine as decribed in EHCI spec
+ *
+ * @param[in] device Device asking for interrupts
+ * @return Error code.
+ */
+int pci_disable_legacy(
+    const ddf_dev_t *device, uintptr_t reg_base, size_t reg_size, int irq)
+{
+	assert(device);
+	(void) pci_read16;
+	(void) pci_read8;
+	(void) pci_write16;
+
+#define CHECK_RET_RETURN(ret, message...) \
+	if (ret != EOK) { \
+		usb_log_error(message); \
+		return ret; \
+	} else (void)0
+
+	/* Map EHCI registers */
+	void *regs = NULL;
+	int ret = pio_enable((void*)reg_base, reg_size, &regs);
+	CHECK_RET_RETURN(ret, "Failed to map registers %p: %s.\n",
+	    (void *) reg_base, str_error(ret));
+
+	const uint32_t hcc_params =
+	    *(uint32_t*)(regs + HCC_PARAMS_OFFSET);
+	usb_log_debug("Value of hcc params register: %x.\n", hcc_params);
+
+	/* Read value of EHCI Extended Capabilities Pointer
+	 * position of EEC registers (points to PCI config space) */
+	const uint32_t eecp =
+	    (hcc_params >> HCC_PARAMS_EECP_OFFSET) & HCC_PARAMS_EECP_MASK;
+	usb_log_debug("Value of EECP: %x.\n", eecp);
+
+	/* Read the first EEC. i.e. Legacy Support register */
+	uint32_t usblegsup;
+	ret = pci_read32(device, eecp + USBLEGSUP_OFFSET, &usblegsup);
+	CHECK_RET_RETURN(ret, "Failed to read USBLEGSUP: %s.\n", str_error(ret));
+	usb_log_debug("USBLEGSUP: %" PRIx32 ".\n", usblegsup);
+
+	/* Request control from firmware/BIOS, by writing 1 to highest byte.
+	 * (OS Control semaphore)*/
+	usb_log_debug("Requesting OS control.\n");
+	ret = pci_write8(device, eecp + USBLEGSUP_OFFSET + 3, 1);
+	CHECK_RET_RETURN(ret, "Failed to request OS EHCI control: %s.\n",
+	    str_error(ret));
+
+	size_t wait = 0;
+	/* Wait for BIOS to release control. */
+	ret = pci_read32(device, eecp + USBLEGSUP_OFFSET, &usblegsup);
+	while ((wait < DEFAULT_WAIT) && (usblegsup & USBLEGSUP_BIOS_CONTROL)) {
+		async_usleep(WAIT_STEP);
+		ret = pci_read32(device, eecp + USBLEGSUP_OFFSET, &usblegsup);
+		wait += WAIT_STEP;
+	}
+
+
+	if ((usblegsup & USBLEGSUP_BIOS_CONTROL) == 0) {
+		usb_log_info("BIOS released control after %zu usec.\n", wait);
+	} else {
+		/* BIOS failed to hand over control, this should not happen. */
+		usb_log_warning( "BIOS failed to release control after "
+		    "%zu usecs, force it.\n", wait);
+		ret = pci_write32(device, eecp + USBLEGSUP_OFFSET,
+		    USBLEGSUP_OS_CONTROL);
+		CHECK_RET_RETURN(ret, "Failed to force OS control: %s.\n",
+		    str_error(ret));
+		/* Check capability type here, A value of 01h
+		 * identifies the capability as Legacy Support.
+		 * This extended capability requires one
+		 * additional 32-bit register for control/status information,
+		 * and this register is located at offset EECP+04h
+		 * */
+		if ((usblegsup & 0xff) == 1) {
+			/* Read the second EEC
+			 * Legacy Support and Control register */
+			uint32_t usblegctlsts;
+			ret = pci_read32(
+			    device, eecp + USBLEGCTLSTS_OFFSET, &usblegctlsts);
+			CHECK_RET_RETURN(ret,
+			    "Failed to get USBLEGCTLSTS: %s.\n", str_error(ret));
+			usb_log_debug("USBLEGCTLSTS: %" PRIx32 ".\n",
+			    usblegctlsts);
+			/* Zero SMI enables in legacy control register.
+			 * It should prevent pre-OS code from interfering. */
+			ret = pci_write32(device, eecp + USBLEGCTLSTS_OFFSET,
+			    0xe0000000); /* three upper bits are WC */
+			CHECK_RET_RETURN(ret,
+			    "Failed(%d) zero USBLEGCTLSTS.\n", ret);
+			udelay(10);
+			ret = pci_read32(
+			    device, eecp + USBLEGCTLSTS_OFFSET, &usblegctlsts);
+			CHECK_RET_RETURN(ret,
+			    "Failed to get USBLEGCTLSTS 2: %s.\n",
+			    str_error(ret));
+			usb_log_debug("Zeroed USBLEGCTLSTS: %" PRIx32 ".\n",
+			    usblegctlsts);
+		}
+	}
+
+
+	/* Read again Legacy Support register */
+	ret = pci_read32(device, eecp + USBLEGSUP_OFFSET, &usblegsup);
+	CHECK_RET_RETURN(ret, "Failed to read USBLEGSUP: %s.\n", str_error(ret));
+	usb_log_debug("USBLEGSUP: %" PRIx32 ".\n", usblegsup);
+
+	/*
+	 * TURN OFF EHCI FOR NOW, DRIVER WILL REINITIALIZE IT
+	 */
+
+	/* Get size of capability registers in memory space. */
+	const unsigned operation_offset = *(uint8_t*)regs;
+	usb_log_debug("USBCMD offset: %d.\n", operation_offset);
+
+	/* Zero USBCMD register. */
+	volatile uint32_t *usbcmd =
+	    (uint32_t*)((uint8_t*)regs + operation_offset + CMD_OFFSET);
+	volatile uint32_t *usbsts =
+	    (uint32_t*)((uint8_t*)regs + operation_offset + STS_OFFSET);
+	volatile uint32_t *usbconf =
+	    (uint32_t*)((uint8_t*)regs + operation_offset + CFG_OFFSET);
+	volatile uint32_t *usbint =
+	    (uint32_t*)((uint8_t*)regs + operation_offset + INT_OFFSET);
+	usb_log_debug("USBCMD value: %x.\n", *usbcmd);
+	if (*usbcmd & USBCMD_RUN) {
+		*usbsts = 0x3f; /* ack all interrupts */
+		*usbint = 0; /* disable all interrutps */
+		*usbconf = 0; /* relase control of RH ports */
+
+		*usbcmd = 0;
+		/* Wait until hc is halted */
+		while ((*usbsts & USBSTS_HALTED) == 0);
+		usb_log_info("EHCI turned off.\n");
+	} else {
+		usb_log_info("EHCI was not running.\n");
+	}
+	usb_log_debug("Registers: \n"
+	    "\t USBCMD: %x(0x00080000 = at least 1ms between interrupts)\n"
+	    "\t USBSTS: %x(0x00001000 = HC halted)\n"
+	    "\t USBINT: %x(0x0 = no interrupts).\n"
+	    "\t CONFIG: %x(0x0 = ports controlled by companion hc).\n",
+	    *usbcmd, *usbsts, *usbint, *usbconf);
+
+	return ret;
+#undef CHECK_RET_RETURN
+}
+/*----------------------------------------------------------------------------*/
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
Index: uspace/drv/ehci-hcd/pci.h
===================================================================
--- uspace/drv/ehci-hcd/pci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ehci-hcd/pci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbehci
+ * @{
+ */
+/** @file
+ * PCI related functions needed by EHCI driver.
+ */
+#ifndef DRV_EHCI_PCI_H
+#define DRV_EHCI_PCI_H
+
+#include <ddf/driver.h>
+
+int pci_get_my_registers(const ddf_dev_t *, uintptr_t *, size_t *, int *);
+int pci_enable_interrupts(const ddf_dev_t *);
+int pci_disable_legacy(const ddf_dev_t *, uintptr_t, size_t, int);
+
+#endif
+/**
+ * @}
+ */
+
Index: uspace/drv/ohci/Makefile
===================================================================
--- uspace/drv/ohci/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,58 @@
+#
+# Copyright (c) 2011 Jan Vesely
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+
+LIBS = \
+	$(LIBUSBHOST_PREFIX)/libusbhost.a \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBUSBHOST_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+BINARY = ohci
+
+SOURCES = \
+	batch.c \
+	endpoint_list.c \
+	hc.c \
+	hcd_endpoint.c \
+	iface.c \
+	main.c \
+	ohci.c \
+	pci.c \
+	root_hub.c \
+	hw_struct/endpoint_descriptor.c \
+	hw_struct/transfer_descriptor.c
+
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/ohci/batch.c
===================================================================
--- uspace/drv/ohci/batch.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/batch.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,429 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver USB transaction structure
+ */
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/usb.h>
+#include <usb/debug.h>
+
+#include "batch.h"
+#include "hcd_endpoint.h"
+#include "utils/malloc32.h"
+#include "hw_struct/endpoint_descriptor.h"
+#include "hw_struct/transfer_descriptor.h"
+
+/** OHCI specific data required for USB transfer */
+typedef struct ohci_transfer_batch {
+	/** Endpoint descriptor of the target endpoint. */
+	ed_t *ed;
+	/** List of TDs needed for the transfer */
+	td_t **tds;
+	/** Number of TDs used by the transfer */
+	size_t td_count;
+	/** Dummy TD to be left at the ED and used by the next transfer */
+	size_t leave_td;
+	/** Data buffer, must be accessible byb the OHCI hw. */
+	void *device_buffer;
+} ohci_transfer_batch_t;
+/*----------------------------------------------------------------------------*/
+static void batch_control(usb_transfer_batch_t *instance,
+    usb_direction_t data_dir, usb_direction_t status_dir);
+static void batch_data(usb_transfer_batch_t *instance);
+/*----------------------------------------------------------------------------*/
+/** Safely destructs ohci_transfer_batch_t structure
+ *
+ * @param[in] ohci_batch Instance to destroy.
+ */
+static void ohci_transfer_batch_dispose(void *ohci_batch)
+{
+	ohci_transfer_batch_t *instance = ohci_batch;
+	if (!instance)
+		return;
+	free32(instance->device_buffer);
+	unsigned i = 0;
+	if (instance->tds) {
+		for (; i< instance->td_count; ++i) {
+			if (i != instance->leave_td)
+				free32(instance->tds[i]);
+		}
+		free(instance->tds);
+	}
+	free(instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Allocate memory initialize internal structures
+ *
+ * @param[in] fun DDF function to pass to callback.
+ * @param[in] ep Communication target
+ * @param[in] buffer Data source/destination.
+ * @param[in] buffer_size Size of the buffer.
+ * @param[in] setup_buffer Setup data source (if not NULL)
+ * @param[in] setup_size Size of setup_buffer (should be always 8)
+ * @param[in] func_in function to call on inbound transfer completion
+ * @param[in] func_out function to call on outbound transfer completion
+ * @param[in] arg additional parameter to func_in or func_out
+ * @return Valid pointer if all structures were successfully created,
+ * NULL otherwise.
+ *
+ * Allocates and initializes structures needed by the OHCI hw for the transfer.
+ */
+usb_transfer_batch_t * batch_get(ddf_fun_t *fun, endpoint_t *ep,
+    char *buffer, size_t buffer_size,
+    const char *setup_buffer, size_t setup_size,
+    usbhc_iface_transfer_in_callback_t func_in,
+    usbhc_iface_transfer_out_callback_t func_out, void *arg)
+{
+#define CHECK_NULL_DISPOSE_RETURN(ptr, message...) \
+        if (ptr == NULL) { \
+                usb_log_error(message); \
+                if (instance) { \
+                        usb_transfer_batch_dispose(instance); \
+                } \
+                return NULL; \
+        } else (void)0
+
+	usb_transfer_batch_t *instance = malloc(sizeof(usb_transfer_batch_t));
+	CHECK_NULL_DISPOSE_RETURN(instance,
+	    "Failed to allocate batch instance.\n");
+	usb_transfer_batch_init(instance, ep, buffer, NULL, buffer_size,
+	    NULL, setup_size, func_in, func_out, arg, fun, NULL,
+	    ohci_transfer_batch_dispose);
+
+	const hcd_endpoint_t *hcd_ep = hcd_endpoint_get(ep);
+	assert(hcd_ep);
+
+	ohci_transfer_batch_t *data = calloc(sizeof(ohci_transfer_batch_t), 1);
+	CHECK_NULL_DISPOSE_RETURN(data, "Failed to allocate batch data.\n");
+	instance->private_data = data;
+
+	data->td_count =
+	    ((buffer_size + OHCI_TD_MAX_TRANSFER - 1) / OHCI_TD_MAX_TRANSFER);
+	/* Control transfer need Setup and Status stage */
+	if (ep->transfer_type == USB_TRANSFER_CONTROL) {
+		data->td_count += 2;
+	}
+
+	/* We need an extra place for TD that is currently assigned to hcd_ep*/
+	data->tds = calloc(sizeof(td_t*), data->td_count + 1);
+	CHECK_NULL_DISPOSE_RETURN(data->tds,
+	    "Failed to allocate transfer descriptors.\n");
+
+	/* Add TD left over by the previous transfer */
+	data->tds[0] = hcd_ep->td;
+	data->leave_td = 0;
+	unsigned i = 1;
+	for (; i <= data->td_count; ++i) {
+		data->tds[i] = malloc32(sizeof(td_t));
+		CHECK_NULL_DISPOSE_RETURN(data->tds[i],
+		    "Failed to allocate TD %d.\n", i );
+	}
+
+	data->ed = hcd_ep->ed;
+
+	/* NOTE: OHCI is capable of handling buffer that crosses page boundaries
+	 * it is, however, not capable of handling buffer that occupies more
+	 * than two pages (the first page is computed using start pointer, the
+	 * other using the end pointer) */
+        if (setup_size + buffer_size > 0) {
+		data->device_buffer = malloc32(setup_size + buffer_size);
+                CHECK_NULL_DISPOSE_RETURN(data->device_buffer,
+                    "Failed to allocate device accessible buffer.\n");
+		instance->setup_buffer = data->device_buffer;
+		instance->data_buffer = data->device_buffer + setup_size;
+                memcpy(instance->setup_buffer, setup_buffer, setup_size);
+        }
+
+	return instance;
+}
+/*----------------------------------------------------------------------------*/
+/** Check batch TDs' status.
+ *
+ * @param[in] instance Batch structure to use.
+ * @return False, if there is an active TD, true otherwise.
+ *
+ * Walk all TDs (usually there is just one). Stop with false if there is an
+ * active TD. Stop with true if an error is found. Return true if the walk
+ * completes with the last TD.
+ */
+bool batch_is_complete(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	ohci_transfer_batch_t *data = instance->private_data;
+	assert(data);
+	usb_log_debug("Batch(%p) checking %zu td(s) for completion.\n",
+	    instance, data->td_count);
+	usb_log_debug("ED: %x:%x:%x:%x.\n",
+	    data->ed->status, data->ed->td_head, data->ed->td_tail,
+	    data->ed->next);
+	size_t i = 0;
+	instance->transfered_size = instance->buffer_size;
+	for (; i < data->td_count; ++i) {
+		assert(data->tds[i] != NULL);
+		usb_log_debug("TD %zu: %x:%x:%x:%x.\n", i,
+		    data->tds[i]->status, data->tds[i]->cbp, data->tds[i]->next,
+		    data->tds[i]->be);
+		if (!td_is_finished(data->tds[i])) {
+			return false;
+		}
+		instance->error = td_error(data->tds[i]);
+		if (instance->error != EOK) {
+			usb_log_debug("Batch(%p) found error TD(%zu):%x.\n",
+			    instance, i, data->tds[i]->status);
+			/* Make sure TD queue is empty (one TD),
+			 * ED should be marked as halted */
+			data->ed->td_tail =
+			    (data->ed->td_head & ED_TDTAIL_PTR_MASK);
+			++i;
+			break;
+		}
+	}
+	data->leave_td = i;
+	assert(data->leave_td <= data->td_count);
+	hcd_endpoint_t *hcd_ep = hcd_endpoint_get(instance->ep);
+	assert(hcd_ep);
+	hcd_ep->td = data->tds[i];
+	assert(i > 0);
+	for (--i;i < data->td_count; ++i)
+		instance->transfered_size -= td_remain_size(data->tds[i]);
+
+	/* Clear possible ED HALT */
+	data->ed->td_head &= ~ED_TDHEAD_HALTED_FLAG;
+	const uint32_t pa = addr_to_phys(hcd_ep->td);
+	assert(pa == (data->ed->td_head & ED_TDHEAD_PTR_MASK));
+	assert(pa == (data->ed->td_tail & ED_TDTAIL_PTR_MASK));
+
+	return true;
+}
+/*----------------------------------------------------------------------------*/
+/** Starts execution of the TD list
+ *
+ * @param[in] instance Batch structure to use
+ */
+void batch_commit(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	ohci_transfer_batch_t *data = instance->private_data;
+	assert(data);
+	ed_set_end_td(data->ed, data->tds[data->td_count]);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepares control write transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Uses generic control transfer using direction OUT(data stage) and
+ * IN(status stage).
+ */
+void batch_control_write(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	/* We are data out, we are supposed to provide data */
+	memcpy(instance->data_buffer, instance->buffer, instance->buffer_size);
+	instance->next_step = usb_transfer_batch_call_out_and_dispose;
+	batch_control(instance, USB_DIRECTION_OUT, USB_DIRECTION_IN);
+	usb_log_debug("Batch(%p) CONTROL WRITE initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepares control read transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Uses generic control transfer using direction IN(data stage) and
+ * OUT(status stage).
+ */
+void batch_control_read(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->next_step = usb_transfer_batch_call_in_and_dispose;
+	batch_control(instance, USB_DIRECTION_IN, USB_DIRECTION_OUT);
+	usb_log_debug("Batch(%p) CONTROL READ initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare interrupt in transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transfer.
+ */
+void batch_interrupt_in(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->next_step = usb_transfer_batch_call_in_and_dispose;
+	batch_data(instance);
+	usb_log_debug("Batch(%p) INTERRUPT IN initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare interrupt out transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transfer.
+ */
+void batch_interrupt_out(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	/* We are data out, we are supposed to provide data */
+	memcpy(instance->data_buffer, instance->buffer, instance->buffer_size);
+	instance->next_step = usb_transfer_batch_call_out_and_dispose;
+	batch_data(instance);
+	usb_log_debug("Batch(%p) INTERRUPT OUT initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare bulk in transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transfer.
+ */
+void batch_bulk_in(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->next_step = usb_transfer_batch_call_in_and_dispose;
+	batch_data(instance);
+	usb_log_debug("Batch(%p) BULK IN initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare bulk out transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transfer.
+ */
+void batch_bulk_out(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	/* We are data out, we are supposed to provide data */
+	memcpy(instance->data_buffer, instance->buffer, instance->buffer_size);
+	instance->next_step = usb_transfer_batch_call_out_and_dispose;
+	batch_data(instance);
+	usb_log_debug("Batch(%p) BULK OUT initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare generic control transfer
+ *
+ * @param[in] instance Batch structure to use.
+ * @param[in] data_dir Direction to use for data stage.
+ * @param[in] status_dir Direction to use for status stage.
+ *
+ * Setup stage with toggle 0 and direction BOTH(SETUP_PID)
+ * Data stage with alternating toggle and direction supplied by parameter.
+ * Status stage with toggle 1 and direction supplied by parameter.
+ */
+void batch_control(usb_transfer_batch_t *instance,
+    usb_direction_t data_dir, usb_direction_t status_dir)
+{
+	assert(instance);
+	ohci_transfer_batch_t *data = instance->private_data;
+	assert(data);
+	usb_log_debug("Using ED(%p): %x:%x:%x:%x.\n", data->ed,
+	    data->ed->status, data->ed->td_tail, data->ed->td_head,
+	    data->ed->next);
+	int toggle = 0;
+	/* setup stage */
+	td_init(data->tds[0], USB_DIRECTION_BOTH, instance->setup_buffer,
+		instance->setup_size, toggle);
+	td_set_next(data->tds[0], data->tds[1]);
+	usb_log_debug("Created SETUP TD: %x:%x:%x:%x.\n", data->tds[0]->status,
+	    data->tds[0]->cbp, data->tds[0]->next, data->tds[0]->be);
+
+	/* data stage */
+	size_t td_current = 1;
+	size_t remain_size = instance->buffer_size;
+	char *buffer = instance->data_buffer;
+	while (remain_size > 0) {
+		size_t transfer_size = remain_size > OHCI_TD_MAX_TRANSFER ?
+		    OHCI_TD_MAX_TRANSFER : remain_size;
+		toggle = 1 - toggle;
+
+		td_init(data->tds[td_current], data_dir, buffer,
+		    transfer_size, toggle);
+		td_set_next(data->tds[td_current], data->tds[td_current + 1]);
+		usb_log_debug("Created DATA TD: %x:%x:%x:%x.\n",
+		    data->tds[td_current]->status, data->tds[td_current]->cbp,
+		    data->tds[td_current]->next, data->tds[td_current]->be);
+
+		buffer += transfer_size;
+		remain_size -= transfer_size;
+		assert(td_current < data->td_count - 1);
+		++td_current;
+	}
+
+	/* status stage */
+	assert(td_current == data->td_count - 1);
+	td_init(data->tds[td_current], status_dir, NULL, 0, 1);
+	td_set_next(data->tds[td_current], data->tds[td_current + 1]);
+	usb_log_debug("Created STATUS TD: %x:%x:%x:%x.\n",
+	    data->tds[td_current]->status, data->tds[td_current]->cbp,
+	    data->tds[td_current]->next, data->tds[td_current]->be);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare generic data transfer
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Direction is supplied by the associated ep and toggle is maintained by the
+ * OHCI hw in ED.
+ */
+void batch_data(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	ohci_transfer_batch_t *data = instance->private_data;
+	assert(data);
+	usb_log_debug("Using ED(%p): %x:%x:%x:%x.\n", data->ed,
+	    data->ed->status, data->ed->td_tail, data->ed->td_head,
+	    data->ed->next);
+
+	size_t td_current = 0;
+	size_t remain_size = instance->buffer_size;
+	char *buffer = instance->data_buffer;
+	while (remain_size > 0) {
+		const size_t transfer_size = remain_size > OHCI_TD_MAX_TRANSFER
+		    ? OHCI_TD_MAX_TRANSFER : remain_size;
+
+		td_init(data->tds[td_current], instance->ep->direction,
+		    buffer, transfer_size, -1);
+		td_set_next(data->tds[td_current], data->tds[td_current + 1]);
+		usb_log_debug("Created DATA TD: %x:%x:%x:%x.\n",
+		    data->tds[td_current]->status, data->tds[td_current]->cbp,
+		    data->tds[td_current]->next, data->tds[td_current]->be);
+
+		buffer += transfer_size;
+		remain_size -= transfer_size;
+		assert(td_current < data->td_count);
+		++td_current;
+	}
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/batch.h
===================================================================
--- uspace/drv/ohci/batch.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/batch.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver USB transaction structure
+ */
+#ifndef DRV_OHCI_BATCH_H
+#define DRV_OHCI_BATCH_H
+
+#include <usbhc_iface.h>
+#include <usb/usb.h>
+#include <usb/host/device_keeper.h>
+#include <usb/host/endpoint.h>
+#include <usb/host/batch.h>
+
+usb_transfer_batch_t * batch_get(
+    ddf_fun_t *fun, endpoint_t *ep, char *buffer, size_t size,
+    const char *setup_buffer, size_t setup_size,
+    usbhc_iface_transfer_in_callback_t func_in,
+    usbhc_iface_transfer_out_callback_t func_out,
+    void *arg);
+
+bool batch_is_complete(usb_transfer_batch_t *instance);
+
+void batch_commit(usb_transfer_batch_t *instance);
+
+void batch_control_write(usb_transfer_batch_t *instance);
+
+void batch_control_read(usb_transfer_batch_t *instance);
+
+void batch_interrupt_in(usb_transfer_batch_t *instance);
+
+void batch_interrupt_out(usb_transfer_batch_t *instance);
+
+void batch_bulk_in(usb_transfer_batch_t *instance);
+
+void batch_bulk_out(usb_transfer_batch_t *instance);
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/endpoint_list.c
===================================================================
--- uspace/drv/ohci/endpoint_list.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/endpoint_list.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,179 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver transfer list implementation
+ */
+#include <errno.h>
+#include <usb/debug.h>
+#include <arch/barrier.h>
+
+#include "endpoint_list.h"
+
+/** Initialize transfer list structures.
+ *
+ * @param[in] instance Memory place to use.
+ * @param[in] name Name of the new list.
+ * @return Error code
+ *
+ * Allocates memory for internal ed_t structure.
+ */
+int endpoint_list_init(endpoint_list_t *instance, const char *name)
+{
+	assert(instance);
+	instance->name = name;
+	instance->list_head = malloc32(sizeof(ed_t));
+	if (!instance->list_head) {
+		usb_log_error("Failed to allocate list head.\n");
+		return ENOMEM;
+	}
+	instance->list_head_pa = addr_to_phys(instance->list_head);
+	usb_log_debug2("Transfer list %s setup with ED: %p(0x%0" PRIx32 ")).\n",
+	    name, instance->list_head, instance->list_head_pa);
+
+	ed_init(instance->list_head, NULL);
+	list_initialize(&instance->endpoint_list);
+	fibril_mutex_initialize(&instance->guard);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Set the next list in transfer list chain.
+ *
+ * @param[in] instance List to lead.
+ * @param[in] next List to append.
+ *
+ * Does not check whether this replaces an existing list.
+ */
+void endpoint_list_set_next(endpoint_list_t *instance, endpoint_list_t *next)
+{
+	assert(instance);
+	assert(next);
+	ed_append_ed(instance->list_head, next->list_head);
+}
+/*----------------------------------------------------------------------------*/
+/** Add endpoint to the list and queue.
+ *
+ * @param[in] instance List to use.
+ * @param[in] endpoint Endpoint to add.
+ *
+ * The endpoint is added to the end of the list and queue.
+ */
+void endpoint_list_add_ep(endpoint_list_t *instance, hcd_endpoint_t *hcd_ep)
+{
+	assert(instance);
+	assert(hcd_ep);
+	usb_log_debug2("Queue %s: Adding endpoint(%p).\n",
+	    instance->name, hcd_ep);
+
+	fibril_mutex_lock(&instance->guard);
+
+	ed_t *last_ed = NULL;
+	/* Add to the hardware queue. */
+	if (list_empty(&instance->endpoint_list)) {
+		/* There are no active EDs */
+		last_ed = instance->list_head;
+	} else {
+		/* There are active EDs, get the last one */
+		hcd_endpoint_t *last = list_get_instance(
+		    instance->endpoint_list.prev, hcd_endpoint_t, link);
+		assert(last);
+		last_ed = last->ed;
+	}
+	/* Keep link */
+	hcd_ep->ed->next = last_ed->next;
+	/* Make sure ED is written to the memory */
+	write_barrier();
+
+	/* Add ed to the hw queue */
+	ed_append_ed(last_ed, hcd_ep->ed);
+	/* Make sure ED is updated */
+	write_barrier();
+
+	/* Add to the sw list */
+	list_append(&hcd_ep->link, &instance->endpoint_list);
+
+	hcd_endpoint_t *first = list_get_instance(
+	    instance->endpoint_list.next, hcd_endpoint_t, link);
+	usb_log_debug("HCD EP(%p) added to list %s, first is %p(%p).\n",
+		hcd_ep, instance->name, first, first->ed);
+	if (last_ed == instance->list_head) {
+		usb_log_debug2("%s head ED(%p-0x%0" PRIx32 "): %x:%x:%x:%x.\n",
+		    instance->name, last_ed, instance->list_head_pa,
+		    last_ed->status, last_ed->td_tail, last_ed->td_head,
+		    last_ed->next);
+	}
+	fibril_mutex_unlock(&instance->guard);
+}
+/*----------------------------------------------------------------------------*/
+/** Remove endpoint from the list and queue.
+ *
+ * @param[in] instance List to use.
+ * @param[in] endpoint Endpoint to remove.
+ */
+void endpoint_list_remove_ep(endpoint_list_t *instance, hcd_endpoint_t *hcd_ep)
+{
+	assert(instance);
+	assert(instance->list_head);
+	assert(hcd_ep);
+	assert(hcd_ep->ed);
+
+	fibril_mutex_lock(&instance->guard);
+
+	usb_log_debug2(
+	    "Queue %s: removing endpoint(%p).\n", instance->name, hcd_ep);
+
+	const char *qpos = NULL;
+	ed_t *prev_ed;
+	/* Remove from the hardware queue */
+	if (instance->endpoint_list.next == &hcd_ep->link) {
+		/* I'm the first one here */
+		prev_ed = instance->list_head;
+		qpos = "FIRST";
+	} else {
+		hcd_endpoint_t *prev =
+		    list_get_instance(hcd_ep->link.prev, hcd_endpoint_t, link);
+		prev_ed = prev->ed;
+		qpos = "NOT FIRST";
+	}
+	assert((prev_ed->next & ED_NEXT_PTR_MASK) == addr_to_phys(hcd_ep->ed));
+	prev_ed->next = hcd_ep->ed->next;
+	/* Make sure ED is updated */
+	write_barrier();
+
+	usb_log_debug("HCD EP(%p) removed (%s) from %s, next %x.\n",
+	    hcd_ep, qpos, instance->name, hcd_ep->ed->next);
+
+	/* Remove from the endpoint list */
+	list_remove(&hcd_ep->link);
+	fibril_mutex_unlock(&instance->guard);
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/endpoint_list.h
===================================================================
--- uspace/drv/ohci/endpoint_list.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/endpoint_list.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver transfer list structure
+ */
+#ifndef DRV_OHCI_ENDPOINT_LIST_H
+#define DRV_OHCI_ENDPOINT_LIST_H
+
+#include <fibril_synch.h>
+
+#include "hcd_endpoint.h"
+#include "hw_struct/endpoint_descriptor.h"
+#include "utils/malloc32.h"
+
+/** Structure maintains both OHCI queue and software list of active endpoints.*/
+typedef struct endpoint_list {
+	/** Guard against add/remove races */
+	fibril_mutex_t guard;
+	/** OHCI hw structure at the beginning of the queue */
+	ed_t *list_head;
+	/** Physical address of the first(dummy) ED */
+	uint32_t list_head_pa;
+	/** Assigned name, provides nicer debug output */
+	const char *name;
+	/** Sw list of all active EDs */
+	link_t endpoint_list;
+} endpoint_list_t;
+
+/** Dispose transfer list structures.
+ *
+ * @param[in] instance Memory place to use.
+ *
+ * Frees memory of the internal ed_t structure.
+ */
+static inline void endpoint_list_fini(endpoint_list_t *instance)
+{
+	assert(instance);
+	free32(instance->list_head);
+}
+
+int endpoint_list_init(endpoint_list_t *instance, const char *name);
+void endpoint_list_set_next(endpoint_list_t *instance, endpoint_list_t *next);
+void endpoint_list_add_ep(endpoint_list_t *instance, hcd_endpoint_t *hcd_ep);
+void endpoint_list_remove_ep(endpoint_list_t *instance, hcd_endpoint_t *hcd_ep);
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/hc.c
===================================================================
--- uspace/drv/ohci/hc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,624 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohcihc
+ * @{
+ */
+/** @file
+ * @brief OHCI Host controller driver routines
+ */
+#include <errno.h>
+#include <str_error.h>
+#include <adt/list.h>
+#include <libarch/ddi.h>
+
+#include <usb/debug.h>
+#include <usb/usb.h>
+#include <usb/ddfiface.h>
+
+#include "hc.h"
+#include "hcd_endpoint.h"
+
+#define OHCI_USED_INTERRUPTS \
+    (I_SO | I_WDH | I_UE | I_RHSC)
+static int interrupt_emulator(hc_t *instance);
+static void hc_gain_control(hc_t *instance);
+static int hc_init_transfer_lists(hc_t *instance);
+static int hc_init_memory(hc_t *instance);
+/*----------------------------------------------------------------------------*/
+/** Announce OHCI root hub to the DDF
+ *
+ * @param[in] instance OHCI driver intance
+ * @param[in] hub_fun DDF fuction representing OHCI root hub
+ * @return Error code
+ */
+int hc_register_hub(hc_t *instance, ddf_fun_t *hub_fun)
+{
+	assert(instance);
+	assert(hub_fun);
+
+	const usb_address_t hub_address =
+	    device_keeper_get_free_address(&instance->manager, USB_SPEED_FULL);
+	if (hub_address <= 0) {
+		usb_log_error("Failed(%d) to get OHCI root hub address.\n",
+		    hub_address);
+		return hub_address;
+	}
+	instance->rh.address = hub_address;
+	usb_device_keeper_bind(
+	    &instance->manager, hub_address, hub_fun->handle);
+
+#define CHECK_RET_RELEASE(ret, message...) \
+if (ret != EOK) { \
+	usb_log_error(message); \
+	hc_remove_endpoint(instance, hub_address, 0, USB_DIRECTION_BOTH); \
+	usb_device_keeper_release(&instance->manager, hub_address); \
+	return ret; \
+} else (void)0
+
+	int ret = hc_add_endpoint(instance, hub_address, 0, USB_SPEED_FULL,
+	    USB_TRANSFER_CONTROL, USB_DIRECTION_BOTH, 64, 0, 0);
+	CHECK_RET_RELEASE(ret, "Failed(%d) to add OHCI rh endpoint 0.\n", ret);
+
+	char *match_str = NULL;
+	/* DDF needs heap allocated string */
+	ret = asprintf(&match_str, "usb&class=hub");
+	ret = ret > 0 ? 0 : ret;
+	CHECK_RET_RELEASE(ret, "Failed(%d) to create match-id string.\n", ret);
+
+	ret = ddf_fun_add_match_id(hub_fun, match_str, 100);
+	CHECK_RET_RELEASE(ret, "Failed(%d) add root hub match-id.\n", ret);
+
+	ret = ddf_fun_bind(hub_fun);
+	CHECK_RET_RELEASE(ret, "Failed(%d) to bind root hub function.\n", ret);
+
+	return EOK;
+#undef CHECK_RET_RELEASE
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize OHCI hc driver structure
+ *
+ * @param[in] instance Memory place for the structure.
+ * @param[in] regs Address of the memory mapped I/O registers.
+ * @param[in] reg_size Size of the memory mapped area.
+ * @param[in] interrupts True if w interrupts should be used
+ * @return Error code
+ */
+int hc_init(hc_t *instance, uintptr_t regs, size_t reg_size, bool interrupts)
+{
+	assert(instance);
+	int ret = EOK;
+#define CHECK_RET_RETURN(ret, message...) \
+if (ret != EOK) { \
+	usb_log_error(message); \
+	return ret; \
+} else (void)0
+
+	ret = pio_enable((void*)regs, reg_size, (void**)&instance->registers);
+	CHECK_RET_RETURN(ret,
+	    "Failed(%d) to gain access to device registers: %s.\n",
+	    ret, str_error(ret));
+
+	list_initialize(&instance->pending_batches);
+	usb_device_keeper_init(&instance->manager);
+	ret = usb_endpoint_manager_init(&instance->ep_manager,
+	    BANDWIDTH_AVAILABLE_USB11);
+	CHECK_RET_RETURN(ret, "Failed to initialize endpoint manager: %s.\n",
+	    str_error(ret));
+
+	ret = hc_init_memory(instance);
+	CHECK_RET_RETURN(ret, "Failed to create OHCI memory structures: %s.\n",
+	    str_error(ret));
+#undef CHECK_RET_RETURN
+
+	fibril_mutex_initialize(&instance->guard);
+	hc_gain_control(instance);
+
+	rh_init(&instance->rh, instance->registers);
+
+	if (!interrupts) {
+		instance->interrupt_emulator =
+		    fibril_create((int(*)(void*))interrupt_emulator, instance);
+		fibril_add_ready(instance->interrupt_emulator);
+	}
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Create end register endpoint structures
+ *
+ * @param[in] instance OHCI driver structure.
+ * @param[in] address USB address of the device.
+ * @param[in] endpoint USB endpoint number.
+ * @param[in] speed Communication speeed of the device.
+ * @param[in] type Endpoint's transfer type.
+ * @param[in] direction Endpoint's direction.
+ * @param[in] mps Maximum packet size the endpoint accepts.
+ * @param[in] size Maximum allowed buffer size.
+ * @param[in] interval Time between transfers(interrupt transfers only).
+ * @return Error code
+ */
+int hc_add_endpoint(
+    hc_t *instance, usb_address_t address, usb_endpoint_t endpoint,
+    usb_speed_t speed, usb_transfer_type_t type, usb_direction_t direction,
+    size_t mps, size_t size, unsigned interval)
+{
+	endpoint_t *ep = malloc(sizeof(endpoint_t));
+	if (ep == NULL)
+		return ENOMEM;
+	int ret =
+	    endpoint_init(ep, address, endpoint, direction, type, speed, mps);
+	if (ret != EOK) {
+		free(ep);
+		return ret;
+	}
+
+	hcd_endpoint_t *hcd_ep = hcd_endpoint_assign(ep);
+	if (hcd_ep == NULL) {
+		endpoint_destroy(ep);
+		return ENOMEM;
+	}
+
+	ret = usb_endpoint_manager_register_ep(&instance->ep_manager, ep, size);
+	if (ret != EOK) {
+		hcd_endpoint_clear(ep);
+		endpoint_destroy(ep);
+		return ret;
+	}
+
+	/* Enqueue hcd_ep */
+	switch (ep->transfer_type) {
+	case USB_TRANSFER_CONTROL:
+		instance->registers->control &= ~C_CLE;
+		endpoint_list_add_ep(
+		    &instance->lists[ep->transfer_type], hcd_ep);
+		instance->registers->control_current = 0;
+		instance->registers->control |= C_CLE;
+		break;
+	case USB_TRANSFER_BULK:
+		instance->registers->control &= ~C_BLE;
+		endpoint_list_add_ep(
+		    &instance->lists[ep->transfer_type], hcd_ep);
+		instance->registers->control |= C_BLE;
+		break;
+	case USB_TRANSFER_ISOCHRONOUS:
+	case USB_TRANSFER_INTERRUPT:
+		instance->registers->control &= (~C_PLE & ~C_IE);
+		endpoint_list_add_ep(
+		    &instance->lists[ep->transfer_type], hcd_ep);
+		instance->registers->control |= C_PLE | C_IE;
+		break;
+	default:
+		break;
+	}
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Dequeue and delete endpoint structures
+ *
+ * @param[in] instance OHCI hc driver structure.
+ * @param[in] address USB address of the device.
+ * @param[in] endpoint USB endpoint number.
+ * @param[in] direction Direction of the endpoint.
+ * @return Error code
+ */
+int hc_remove_endpoint(hc_t *instance, usb_address_t address,
+    usb_endpoint_t endpoint, usb_direction_t direction)
+{
+	assert(instance);
+	fibril_mutex_lock(&instance->guard);
+	endpoint_t *ep = usb_endpoint_manager_get_ep(&instance->ep_manager,
+	    address, endpoint, direction, NULL);
+	if (ep == NULL) {
+		usb_log_error("Endpoint unregister failed: No such EP.\n");
+		fibril_mutex_unlock(&instance->guard);
+		return ENOENT;
+	}
+
+	hcd_endpoint_t *hcd_ep = hcd_endpoint_get(ep);
+	if (hcd_ep) {
+		/* Dequeue hcd_ep */
+		switch (ep->transfer_type) {
+		case USB_TRANSFER_CONTROL:
+			instance->registers->control &= ~C_CLE;
+			endpoint_list_remove_ep(
+			    &instance->lists[ep->transfer_type], hcd_ep);
+			instance->registers->control_current = 0;
+			instance->registers->control |= C_CLE;
+			break;
+		case USB_TRANSFER_BULK:
+			instance->registers->control &= ~C_BLE;
+			endpoint_list_remove_ep(
+			    &instance->lists[ep->transfer_type], hcd_ep);
+			instance->registers->control |= C_BLE;
+			break;
+		case USB_TRANSFER_ISOCHRONOUS:
+		case USB_TRANSFER_INTERRUPT:
+			instance->registers->control &= (~C_PLE & ~C_IE);
+			endpoint_list_remove_ep(
+			    &instance->lists[ep->transfer_type], hcd_ep);
+			instance->registers->control |= C_PLE | C_IE;
+			break;
+		default:
+			break;
+		}
+		hcd_endpoint_clear(ep);
+	} else {
+		usb_log_warning("Endpoint without hcd equivalent structure.\n");
+	}
+	int ret = usb_endpoint_manager_unregister_ep(&instance->ep_manager,
+	    address, endpoint, direction);
+	fibril_mutex_unlock(&instance->guard);
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Get access to endpoint structures
+ *
+ * @param[in] instance OHCI hc driver structure.
+ * @param[in] address USB address of the device.
+ * @param[in] endpoint USB endpoint number.
+ * @param[in] direction Direction of the endpoint.
+ * @param[out] bw Reserved bandwidth.
+ * @return Error code
+ */
+endpoint_t * hc_get_endpoint(hc_t *instance, usb_address_t address,
+    usb_endpoint_t endpoint, usb_direction_t direction, size_t *bw)
+{
+	assert(instance);
+	fibril_mutex_lock(&instance->guard);
+	endpoint_t *ep = usb_endpoint_manager_get_ep(&instance->ep_manager,
+	    address, endpoint, direction, bw);
+	fibril_mutex_unlock(&instance->guard);
+	return ep;
+}
+/*----------------------------------------------------------------------------*/
+/** Add USB transfer to the schedule.
+ *
+ * @param[in] instance OHCI hc driver structure.
+ * @param[in] batch Batch representing the transfer.
+ * @return Error code.
+ */
+int hc_schedule(hc_t *instance, usb_transfer_batch_t *batch)
+{
+	assert(instance);
+	assert(batch);
+	assert(batch->ep);
+
+	/* Check for root hub communication */
+	if (batch->ep->address == instance->rh.address) {
+		return rh_request(&instance->rh, batch);
+	}
+
+	fibril_mutex_lock(&instance->guard);
+	list_append(&batch->link, &instance->pending_batches);
+	batch_commit(batch);
+
+	/* Control and bulk schedules need a kick to start working */
+	switch (batch->ep->transfer_type)
+	{
+	case USB_TRANSFER_CONTROL:
+		instance->registers->command_status |= CS_CLF;
+		break;
+	case USB_TRANSFER_BULK:
+		instance->registers->command_status |= CS_BLF;
+		break;
+	default:
+		break;
+	}
+	fibril_mutex_unlock(&instance->guard);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Interrupt handling routine
+ *
+ * @param[in] instance OHCI hc driver structure.
+ * @param[in] status Value of the status register at the time of interrupt.
+ */
+void hc_interrupt(hc_t *instance, uint32_t status)
+{
+	assert(instance);
+	if ((status & ~I_SF) == 0) /* ignore sof status */
+		return;
+	usb_log_debug2("OHCI(%p) interrupt: %x.\n", instance, status);
+	if (status & I_RHSC)
+		rh_interrupt(&instance->rh);
+
+	if (status & I_WDH) {
+		fibril_mutex_lock(&instance->guard);
+		usb_log_debug2("HCCA: %p-%#" PRIx32 " (%p).\n", instance->hcca,
+		    instance->registers->hcca,
+		    (void *) addr_to_phys(instance->hcca));
+		usb_log_debug2("Periodic current: %#" PRIx32 ".\n",
+		    instance->registers->periodic_current);
+
+		link_t *current = instance->pending_batches.next;
+		while (current != &instance->pending_batches) {
+			link_t *next = current->next;
+			usb_transfer_batch_t *batch =
+			    usb_transfer_batch_from_link(current);
+
+			if (batch_is_complete(batch)) {
+				list_remove(current);
+				usb_transfer_batch_finish(batch);
+			}
+			current = next;
+		}
+		fibril_mutex_unlock(&instance->guard);
+	}
+
+	if (status & I_UE) {
+		hc_start_hw(instance);
+	}
+
+}
+/*----------------------------------------------------------------------------*/
+/** Check status register regularly
+ *
+ * @param[in] instance OHCI hc driver structure.
+ * @return Error code
+ */
+int interrupt_emulator(hc_t *instance)
+{
+	assert(instance);
+	usb_log_info("Started interrupt emulator.\n");
+	while (1) {
+		const uint32_t status = instance->registers->interrupt_status;
+		instance->registers->interrupt_status = status;
+		hc_interrupt(instance, status);
+		async_usleep(10000);
+	}
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Turn off any (BIOS)driver that might be in control of the device.
+ *
+ * @param[in] instance OHCI hc driver structure.
+ */
+void hc_gain_control(hc_t *instance)
+{
+	assert(instance);
+	usb_log_debug("Requesting OHCI control.\n");
+	/* Turn off legacy emulation */
+	volatile uint32_t *ohci_emulation_reg =
+	    (uint32_t*)((char*)instance->registers + 0x100);
+	usb_log_debug("OHCI legacy register %p: %x.\n",
+	    ohci_emulation_reg, *ohci_emulation_reg);
+	/* Do not change A20 state */
+	*ohci_emulation_reg &= 0x100;
+	usb_log_debug("OHCI legacy register %p: %x.\n",
+	    ohci_emulation_reg, *ohci_emulation_reg);
+
+	/* Interrupt routing enabled => smm driver is active */
+	if (instance->registers->control & C_IR) {
+		usb_log_debug("SMM driver: request ownership change.\n");
+		instance->registers->command_status |= CS_OCR;
+		while (instance->registers->control & C_IR) {
+			async_usleep(1000);
+		}
+		usb_log_info("SMM driver: Ownership taken.\n");
+		instance->registers->control &= (C_HCFS_RESET << C_HCFS_SHIFT);
+		async_usleep(50000);
+		return;
+	}
+
+	const unsigned hc_status =
+	    (instance->registers->control >> C_HCFS_SHIFT) & C_HCFS_MASK;
+	/* Interrupt routing disabled && status != USB_RESET => BIOS active */
+	if (hc_status != C_HCFS_RESET) {
+		usb_log_debug("BIOS driver found.\n");
+		if (hc_status == C_HCFS_OPERATIONAL) {
+			usb_log_info("BIOS driver: HC operational.\n");
+			return;
+		}
+		/* HC is suspended assert resume for 20ms */
+		instance->registers->control &= (C_HCFS_RESUME << C_HCFS_SHIFT);
+		async_usleep(20000);
+		usb_log_info("BIOS driver: HC resumed.\n");
+		return;
+	}
+
+	/* HC is in reset (hw startup) => no other driver
+	 * maintain reset for at least the time specified in USB spec (50 ms)*/
+	usb_log_info("HC found in reset.\n");
+	async_usleep(50000);
+}
+/*----------------------------------------------------------------------------*/
+/** OHCI hw initialization routine.
+ *
+ * @param[in] instance OHCI hc driver structure.
+ */
+void hc_start_hw(hc_t *instance)
+{
+	/* OHCI guide page 42 */
+	assert(instance);
+	usb_log_debug2("Started hc initialization routine.\n");
+
+	/* Save contents of fm_interval register */
+	const uint32_t fm_interval = instance->registers->fm_interval;
+	usb_log_debug2("Old value of HcFmInterval: %x.\n", fm_interval);
+
+	/* Reset hc */
+	usb_log_debug2("HC reset.\n");
+	size_t time = 0;
+	instance->registers->command_status = CS_HCR;
+	while (instance->registers->command_status & CS_HCR) {
+		async_usleep(10);
+		time += 10;
+	}
+	usb_log_debug2("HC reset complete in %zu us.\n", time);
+
+	/* Restore fm_interval */
+	instance->registers->fm_interval = fm_interval;
+	assert((instance->registers->command_status & CS_HCR) == 0);
+
+	/* hc is now in suspend state */
+	usb_log_debug2("HC should be in suspend state(%x).\n",
+	    instance->registers->control);
+
+	/* Use HCCA */
+	instance->registers->hcca = addr_to_phys(instance->hcca);
+
+	/* Use queues */
+	instance->registers->bulk_head =
+	    instance->lists[USB_TRANSFER_BULK].list_head_pa;
+	usb_log_debug2("Bulk HEAD set to: %p (%#" PRIx32 ").\n",
+	    instance->lists[USB_TRANSFER_BULK].list_head,
+	    instance->lists[USB_TRANSFER_BULK].list_head_pa);
+
+	instance->registers->control_head =
+	    instance->lists[USB_TRANSFER_CONTROL].list_head_pa;
+	usb_log_debug2("Control HEAD set to: %p (%#" PRIx32 ").\n",
+	    instance->lists[USB_TRANSFER_CONTROL].list_head,
+	    instance->lists[USB_TRANSFER_CONTROL].list_head_pa);
+
+	/* Enable queues */
+	instance->registers->control |= (C_PLE | C_IE | C_CLE | C_BLE);
+	usb_log_debug2("All queues enabled(%x).\n",
+	    instance->registers->control);
+
+	/* Enable interrupts */
+	instance->registers->interrupt_enable = OHCI_USED_INTERRUPTS;
+	usb_log_debug2("Enabled interrupts: %x.\n",
+	    instance->registers->interrupt_enable);
+	instance->registers->interrupt_enable = I_MI;
+
+	/* Set periodic start to 90% */
+	uint32_t frame_length = ((fm_interval >> FMI_FI_SHIFT) & FMI_FI_MASK);
+	instance->registers->periodic_start = (frame_length / 10) * 9;
+	usb_log_debug2("All periodic start set to: %x(%u - 90%% of %d).\n",
+	    instance->registers->periodic_start,
+	    instance->registers->periodic_start, frame_length);
+
+	instance->registers->control &= (C_HCFS_OPERATIONAL << C_HCFS_SHIFT);
+	usb_log_info("OHCI HC up and running(%x).\n",
+	    instance->registers->control);
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize schedule queues
+ *
+ * @param[in] instance OHCI hc driver structure
+ * @return Error code
+ */
+int hc_init_transfer_lists(hc_t *instance)
+{
+	assert(instance);
+#define SETUP_ENDPOINT_LIST(type) \
+do { \
+	const char *name = usb_str_transfer_type(type); \
+	int ret = endpoint_list_init(&instance->lists[type], name); \
+	if (ret != EOK) { \
+		usb_log_error("Failed(%d) to setup %s endpoint list.\n", \
+		    ret, name); \
+		endpoint_list_fini(&instance->lists[USB_TRANSFER_ISOCHRONOUS]);\
+		endpoint_list_fini(&instance->lists[USB_TRANSFER_INTERRUPT]); \
+		endpoint_list_fini(&instance->lists[USB_TRANSFER_CONTROL]); \
+		endpoint_list_fini(&instance->lists[USB_TRANSFER_BULK]); \
+		return ret; \
+	} \
+} while (0)
+
+	SETUP_ENDPOINT_LIST(USB_TRANSFER_ISOCHRONOUS);
+	SETUP_ENDPOINT_LIST(USB_TRANSFER_INTERRUPT);
+	SETUP_ENDPOINT_LIST(USB_TRANSFER_CONTROL);
+	SETUP_ENDPOINT_LIST(USB_TRANSFER_BULK);
+#undef SETUP_ENDPOINT_LIST
+	endpoint_list_set_next(&instance->lists[USB_TRANSFER_INTERRUPT],
+	    &instance->lists[USB_TRANSFER_ISOCHRONOUS]);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize memory structures used by the OHCI hcd.
+ *
+ * @param[in] instance OHCI hc driver structure.
+ * @return Error code.
+ */
+int hc_init_memory(hc_t *instance)
+{
+	assert(instance);
+
+	bzero(&instance->rh, sizeof(instance->rh));
+	/* Init queues */
+	const int ret = hc_init_transfer_lists(instance);
+	if (ret != EOK) {
+		return ret;
+	}
+
+	/*Init HCCA */
+	instance->hcca = malloc32(sizeof(hcca_t));
+	if (instance->hcca == NULL)
+		return ENOMEM;
+	bzero(instance->hcca, sizeof(hcca_t));
+	usb_log_debug2("OHCI HCCA initialized at %p.\n", instance->hcca);
+
+	unsigned i = 0;
+	for (; i < 32; ++i) {
+		instance->hcca->int_ep[i] =
+		    instance->lists[USB_TRANSFER_INTERRUPT].list_head_pa;
+	}
+	usb_log_debug2("Interrupt HEADs set to: %p (%#" PRIx32 ").\n",
+	    instance->lists[USB_TRANSFER_INTERRUPT].list_head,
+	    instance->lists[USB_TRANSFER_INTERRUPT].list_head_pa);
+
+	/* Init interrupt code */
+	instance->interrupt_code.cmds = instance->interrupt_commands;
+	instance->interrupt_code.cmdcount = OHCI_NEEDED_IRQ_COMMANDS;
+	{
+		/* Read status register */
+		instance->interrupt_commands[0].cmd = CMD_MEM_READ_32;
+		instance->interrupt_commands[0].dstarg = 1;
+		instance->interrupt_commands[0].addr =
+		    (void*)&instance->registers->interrupt_status;
+
+		/* Test whether we are the interrupt cause */
+		instance->interrupt_commands[1].cmd = CMD_BTEST;
+		instance->interrupt_commands[1].value =
+		    OHCI_USED_INTERRUPTS;
+		instance->interrupt_commands[1].srcarg = 1;
+		instance->interrupt_commands[1].dstarg = 2;
+
+		/* Predicate cleaning and accepting */
+		instance->interrupt_commands[2].cmd = CMD_PREDICATE;
+		instance->interrupt_commands[2].value = 2;
+		instance->interrupt_commands[2].srcarg = 2;
+
+		/* Write-clean status register */
+		instance->interrupt_commands[3].cmd = CMD_MEM_WRITE_A_32;
+		instance->interrupt_commands[3].srcarg = 1;
+		instance->interrupt_commands[3].addr =
+		    (void*)&instance->registers->interrupt_status;
+
+		/* Accept interrupt */
+		instance->interrupt_commands[4].cmd = CMD_ACCEPT;
+	}
+
+	return EOK;
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/hc.h
===================================================================
--- uspace/drv/ohci/hc.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hc.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI host controller driver structure
+ */
+#ifndef DRV_OHCI_HC_H
+#define DRV_OHCI_HC_H
+
+#include <fibril.h>
+#include <fibril_synch.h>
+#include <adt/list.h>
+#include <ddi.h>
+
+#include <usb/usb.h>
+#include <usb/host/device_keeper.h>
+#include <usb/host/usb_endpoint_manager.h>
+#include <usbhc_iface.h>
+
+#include "batch.h"
+#include "ohci_regs.h"
+#include "root_hub.h"
+#include "endpoint_list.h"
+#include "hw_struct/hcca.h"
+
+#define OHCI_NEEDED_IRQ_COMMANDS 5
+
+/** Main OHCI drier structure */
+typedef struct hc {
+	/** USB bus driver, devices and addresses */
+	usb_device_keeper_t manager;
+	/** USB bus driver, endpoints */
+	usb_endpoint_manager_t ep_manager;
+
+	/** Memory mapped I/O registers area */
+	ohci_regs_t *registers;
+	/** Host controller communication area structure */
+	hcca_t *hcca;
+
+	/** Transfer schedules */
+	endpoint_list_t lists[4];
+	/** List of active transfers */
+	link_t pending_batches;
+
+	/** Fibril for periodic checks if interrupts can't be used */
+	fid_t interrupt_emulator;
+
+	/** Guards schedule and endpoint manipulation */
+	fibril_mutex_t guard;
+
+	/** Code to be executed in kernel interrupt handler */
+	irq_code_t interrupt_code;
+
+	/** Commands that form interrupt code */
+	irq_cmd_t interrupt_commands[OHCI_NEEDED_IRQ_COMMANDS];
+
+	/** USB hub emulation structure */
+	rh_t rh;
+} hc_t;
+
+int hc_register_hub(hc_t *instance, ddf_fun_t *hub_fun);
+int hc_init(hc_t *instance, uintptr_t regs, size_t reg_size, bool interrupts);
+void hc_start_hw(hc_t *instance);
+
+/** Safely dispose host controller internal structures
+ *
+ * @param[in] instance Host controller structure to use.
+ */
+static inline void hc_fini(hc_t *instance)
+	{ /* TODO: implement*/ };
+
+int hc_add_endpoint(hc_t *instance, usb_address_t address, usb_endpoint_t ep,
+    usb_speed_t speed, usb_transfer_type_t type, usb_direction_t direction,
+    size_t max_packet_size, size_t size, unsigned interval);
+int hc_remove_endpoint(hc_t *instance, usb_address_t address,
+    usb_endpoint_t endpoint, usb_direction_t direction);
+endpoint_t * hc_get_endpoint(hc_t *instance, usb_address_t address,
+    usb_endpoint_t endpoint, usb_direction_t direction, size_t *bw);
+
+int hc_schedule(hc_t *instance, usb_transfer_batch_t *batch);
+void hc_interrupt(hc_t *instance, uint32_t status);
+
+/** Get and cast pointer to the driver data
+ *
+ * @param[in] fun DDF function pointer
+ * @return cast pointer to driver_data
+ */
+static inline hc_t * fun_to_hc(ddf_fun_t *fun)
+	{ return fun->driver_data; }
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/hcd_endpoint.c
===================================================================
--- uspace/drv/ohci/hcd_endpoint.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hcd_endpoint.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#include "utils/malloc32.h"
+#include "hcd_endpoint.h"
+
+/** Callback to set toggle on ED.
+ *
+ * @param[in] hcd_ep hcd endpoint structure
+ * @param[in] toggle new value of toggle bit
+ */
+static void hcd_ep_toggle_set(void *hcd_ep, int toggle)
+{
+	hcd_endpoint_t *instance = hcd_ep;
+	assert(instance);
+	assert(instance->ed);
+	ed_toggle_set(instance->ed, toggle);
+}
+/*----------------------------------------------------------------------------*/
+/** Callback to get value of toggle bit.
+ *
+ * @param[in] hcd_ep hcd endpoint structure
+ * @return Current value of toggle bit.
+ */
+static int hcd_ep_toggle_get(void *hcd_ep)
+{
+	hcd_endpoint_t *instance = hcd_ep;
+	assert(instance);
+	assert(instance->ed);
+	return ed_toggle_get(instance->ed);
+}
+/*----------------------------------------------------------------------------*/
+/** Creates new hcd endpoint representation.
+ *
+ * @param[in] ep USBD endpoint structure
+ * @return pointer to a new hcd endpoint structure, NULL on failure.
+ */
+hcd_endpoint_t * hcd_endpoint_assign(endpoint_t *ep)
+{
+	assert(ep);
+	hcd_endpoint_t *hcd_ep = malloc(sizeof(hcd_endpoint_t));
+	if (hcd_ep == NULL)
+		return NULL;
+
+	hcd_ep->ed = malloc32(sizeof(ed_t));
+	if (hcd_ep->ed == NULL) {
+		free(hcd_ep);
+		return NULL;
+	}
+
+	hcd_ep->td = malloc32(sizeof(td_t));
+	if (hcd_ep->td == NULL) {
+		free32(hcd_ep->ed);
+		free(hcd_ep);
+		return NULL;
+	}
+
+	ed_init(hcd_ep->ed, ep);
+	ed_set_td(hcd_ep->ed, hcd_ep->td);
+	endpoint_set_hc_data(ep, hcd_ep, hcd_ep_toggle_get, hcd_ep_toggle_set);
+
+	return hcd_ep;
+}
+/*----------------------------------------------------------------------------*/
+/** Disposes assigned hcd endpoint structure
+ *
+ * @param[in] ep USBD endpoint structure
+ */
+void hcd_endpoint_clear(endpoint_t *ep)
+{
+	assert(ep);
+	hcd_endpoint_t *hcd_ep = ep->hc_data.data;
+	assert(hcd_ep);
+	free32(hcd_ep->ed);
+	free32(hcd_ep->td);
+	free(hcd_ep);
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/hcd_endpoint.h
===================================================================
--- uspace/drv/ohci/hcd_endpoint.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hcd_endpoint.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#ifndef DRV_OHCI_HCD_ENDPOINT_H
+#define DRV_OHCI_HCD_ENDPOINT_H
+
+#include <assert.h>
+#include <adt/list.h>
+#include <usb/host/endpoint.h>
+
+#include "hw_struct/endpoint_descriptor.h"
+#include "hw_struct/transfer_descriptor.h"
+
+/** Connector structure linking ED to to prepared TD. */
+typedef struct hcd_endpoint {
+	/** OHCI endpoint descriptor */
+	ed_t *ed;
+	/** Currently enqueued transfer descriptor */
+	td_t *td;
+	/** Linked list used by driver software */
+	link_t link;
+} hcd_endpoint_t;
+
+hcd_endpoint_t * hcd_endpoint_assign(endpoint_t *ep);
+void hcd_endpoint_clear(endpoint_t *ep);
+
+/** Get and convert assigned hcd_endpoint_t structure
+ * @param[in] ep USBD endpoint structure.
+ * @return Pointer to assigned hcd endpoint structure
+ */
+static inline hcd_endpoint_t * hcd_endpoint_get(endpoint_t *ep)
+{
+	assert(ep);
+	return ep->hc_data.data;
+}
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/hw_struct/completion_codes.h
===================================================================
--- uspace/drv/ohci/hw_struct/completion_codes.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hw_struct/completion_codes.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#ifndef DRV_OHCI_HW_STRUCT_COMPLETION_CODES_H
+#define DRV_OHCI_HW_STRUCT_COMPLETION_CODES_H
+
+#include <errno.h>
+
+#define CC_NOERROR (0x0)
+#define CC_CRC (0x1)
+#define CC_BITSTUFF (0x2)
+#define CC_TOGGLE (0x3)
+#define CC_STALL (0x4)
+#define CC_NORESPONSE (0x5)
+#define CC_PIDFAIL (0x6)
+#define CC_PIDUNEXPECTED (0x7)
+#define CC_DATAOVERRRUN (0x8)
+#define CC_DATAUNDERRRUN (0x9)
+#define CC_BUFFEROVERRRUN (0xc)
+#define CC_BUFFERUNDERRUN (0xd)
+#define CC_NOACCESS1 (0xe)
+#define CC_NOACCESS2 (0xf)
+
+inline static int cc_to_rc(int cc)
+{
+	switch (cc) {
+	case CC_NOERROR:
+		return EOK;
+
+	case CC_CRC:
+		return EBADCHECKSUM;
+
+	case CC_PIDUNEXPECTED:
+	case CC_PIDFAIL:
+	case CC_BITSTUFF:
+		return EIO;
+
+	case CC_TOGGLE:
+	case CC_STALL:
+		return ESTALL;
+
+	case CC_NORESPONSE:
+		return ETIMEOUT;
+
+	case CC_DATAOVERRRUN:
+	case CC_DATAUNDERRRUN:
+	case CC_BUFFEROVERRRUN:
+	case CC_BUFFERUNDERRUN:
+		return EOVERFLOW;
+
+	case CC_NOACCESS1:
+	case CC_NOACCESS2:
+	default:
+		return ENOTSUP;
+	}
+}
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/hw_struct/endpoint_descriptor.c
===================================================================
--- uspace/drv/ohci/hw_struct/endpoint_descriptor.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hw_struct/endpoint_descriptor.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#include "endpoint_descriptor.h"
+
+static unsigned direc[3] =
+    { ED_STATUS_D_IN, ED_STATUS_D_OUT, ED_STATUS_D_TRANSFER };
+
+void ed_init(ed_t *instance, endpoint_t *ep)
+{
+	assert(instance);
+	bzero(instance, sizeof(ed_t));
+	if (ep == NULL) {
+		instance->status = ED_STATUS_K_FLAG;
+		return;
+	}
+	assert(ep);
+	instance->status = 0
+	    | ((ep->address & ED_STATUS_FA_MASK) << ED_STATUS_FA_SHIFT)
+	    | ((ep->endpoint & ED_STATUS_EN_MASK) << ED_STATUS_EN_SHIFT)
+	    | ((direc[ep->direction] & ED_STATUS_D_MASK) << ED_STATUS_D_SHIFT)
+	    | ((ep->max_packet_size & ED_STATUS_MPS_MASK)
+	        << ED_STATUS_MPS_SHIFT);
+
+
+	if (ep->speed == USB_SPEED_LOW)
+		instance->status |= ED_STATUS_S_FLAG;
+	if (ep->transfer_type == USB_TRANSFER_ISOCHRONOUS)
+		instance->status |= ED_STATUS_F_FLAG;
+
+	if (ep->toggle)
+		instance->td_head |= ED_TDHEAD_TOGGLE_CARRY;
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/hw_struct/endpoint_descriptor.h
===================================================================
--- uspace/drv/ohci/hw_struct/endpoint_descriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hw_struct/endpoint_descriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#ifndef DRV_OHCI_HW_STRUCT_ENDPOINT_DESCRIPTOR_H
+#define DRV_OHCI_HW_STRUCT_ENDPOINT_DESCRIPTOR_H
+
+#include <assert.h>
+#include <stdint.h>
+
+#include <usb/host/endpoint.h>
+
+#include "../utils/malloc32.h"
+#include "transfer_descriptor.h"
+
+#include "completion_codes.h"
+
+typedef struct ed {
+	volatile uint32_t status;
+#define ED_STATUS_FA_MASK (0x7f)   /* USB device address   */
+#define ED_STATUS_FA_SHIFT (0)
+#define ED_STATUS_EN_MASK (0xf)    /* USB endpoint address */
+#define ED_STATUS_EN_SHIFT (7)
+#define ED_STATUS_D_MASK (0x3)     /* direction */
+#define ED_STATUS_D_SHIFT (11)
+#define ED_STATUS_D_OUT (0x1)
+#define ED_STATUS_D_IN (0x2)
+#define ED_STATUS_D_TRANSFER (0x3)
+
+#define ED_STATUS_S_FLAG (1 << 13) /* speed flag: 1 = low */
+#define ED_STATUS_K_FLAG (1 << 14) /* skip flag (no not execute this ED) */
+#define ED_STATUS_F_FLAG (1 << 15) /* format: 1 = isochronous*/
+#define ED_STATUS_MPS_MASK (0x3ff) /* max_packet_size*/
+#define ED_STATUS_MPS_SHIFT (16)
+
+	volatile uint32_t td_tail;
+#define ED_TDTAIL_PTR_MASK (0xfffffff0)
+#define ED_TDTAIL_PTR_SHIFT (0)
+
+	volatile uint32_t td_head;
+#define ED_TDHEAD_PTR_MASK (0xfffffff0)
+#define ED_TDHEAD_PTR_SHIFT (0)
+#define ED_TDHEAD_ZERO_MASK (0x3)
+#define ED_TDHEAD_ZERO_SHIFT (2)
+#define ED_TDHEAD_TOGGLE_CARRY (0x2)
+#define ED_TDHEAD_HALTED_FLAG (0x1)
+
+	volatile uint32_t next;
+#define ED_NEXT_PTR_MASK (0xfffffff0)
+#define ED_NEXT_PTR_SHIFT (0)
+} __attribute__((packed)) ed_t;
+
+void ed_init(ed_t *instance, endpoint_t *ep);
+
+static inline void ed_set_td(ed_t *instance, td_t *td)
+{
+	assert(instance);
+	uintptr_t pa = addr_to_phys(td);
+	instance->td_head =
+	    ((pa & ED_TDHEAD_PTR_MASK)
+	    | (instance->td_head & ~ED_TDHEAD_PTR_MASK));
+	instance->td_tail = pa & ED_TDTAIL_PTR_MASK;
+}
+
+static inline void ed_set_end_td(ed_t *instance, td_t *td)
+{
+	assert(instance);
+	uintptr_t pa = addr_to_phys(td);
+	instance->td_tail = pa & ED_TDTAIL_PTR_MASK;
+}
+
+static inline void ed_append_ed(ed_t *instance, ed_t *next)
+{
+	assert(instance);
+	assert(next);
+	uint32_t pa = addr_to_phys(next);
+	assert((pa & ED_NEXT_PTR_MASK) << ED_NEXT_PTR_SHIFT == pa);
+	instance->next = pa;
+}
+
+static inline int ed_toggle_get(ed_t *instance)
+{
+	assert(instance);
+	return (instance->td_head & ED_TDHEAD_TOGGLE_CARRY) ? 1 : 0;
+}
+
+static inline void ed_toggle_set(ed_t *instance, int toggle)
+{
+	assert(instance);
+	assert(toggle == 0 || toggle == 1);
+	if (toggle == 1) {
+		instance->td_head |= ED_TDHEAD_TOGGLE_CARRY;
+	} else {
+		/* clear halted flag when reseting toggle */
+		instance->td_head &= ~ED_TDHEAD_TOGGLE_CARRY;
+		instance->td_head &= ~ED_TDHEAD_HALTED_FLAG;
+	}
+}
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/hw_struct/hcca.h
===================================================================
--- uspace/drv/ohci/hw_struct/hcca.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hw_struct/hcca.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#ifndef DRV_OHCI_HW_STRUCT_HCCA_H
+#define DRV_OHCI_HW_STRUCT_HCCA_H
+
+#include <stdint.h>
+
+/** Host controller communication area.
+ * Shared memory used for communication between the controller and the driver.
+ */
+typedef struct hcca {
+	uint32_t int_ep[32];
+	uint16_t frame_number;
+	uint16_t pad1;
+	uint32_t done_head;
+	uint32_t reserved[29];
+} __attribute__((packed, aligned)) hcca_t;
+
+#endif
+/**
+ * @}
+ */
+
Index: uspace/drv/ohci/hw_struct/iso_transfer_descriptor.h
===================================================================
--- uspace/drv/ohci/hw_struct/iso_transfer_descriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hw_struct/iso_transfer_descriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#ifndef DRV_OHCI_HW_STRUCT_ISO_TRANSFER_DESCRIPTOR_H
+#define DRV_OHCI_HW_STRUCT_ISO_TRANSFER_DESCRIPTOR_H
+
+#include <stdint.h>
+
+#include "completion_codes.h"
+
+typedef struct itd {
+	volatile uint32_t status;
+#define ITD_STATUS_SF_MASK (0xffff) /* starting frame */
+#define ITD_STATUS_SF_SHIFT (0)
+#define ITD_STATUS_DI_MASK (0x7) /* delay int, wait DI frames before int */
+#define ITD_STATUS_DI_SHIFT (21)
+#define ITD_STATUS_DI_NO_INTERRUPT (0x7)
+#define ITD_STATUS_FC_MASK (0x7) /* frame count */
+#define ITD_STATUS_FC_SHIFT (24)
+#define ITD_STATUS_CC_MASK (0xf) /* condition code */
+#define ITD_STATUS_CC_SHIFT (28)
+
+	volatile uint32_t page;   /* page number of the first byte in buffer */
+#define ITD_PAGE_BP0_MASK (0xfffff000)
+#define ITD_PAGE_BP0_SHIFT (0)
+
+	volatile uint32_t next;
+#define ITD_NEXT_PTR_MASK (0xfffffff0)
+#define ITD_NEXT_PTR_SHIFT (0)
+
+	volatile uint32_t be; /* buffer end, address of the last byte */
+
+	volatile uint16_t offset[8];
+#define ITD_OFFSET_SIZE_MASK (0x3ff)
+#define ITD_OFFSET_SIZE_SHIFT (0)
+#define ITD_OFFSET_CC_MASK (0xf)
+#define ITD_OFFSET_CC_SHIFT (12)
+
+} __attribute__((packed)) itd_t;
+#endif
+/**
+ * @}
+ */
+
+
Index: uspace/drv/ohci/hw_struct/transfer_descriptor.c
===================================================================
--- uspace/drv/ohci/hw_struct/transfer_descriptor.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hw_struct/transfer_descriptor.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#include <usb/usb.h>
+#include "transfer_descriptor.h"
+
+static unsigned dp[3] =
+    { TD_STATUS_DP_IN, TD_STATUS_DP_OUT, TD_STATUS_DP_SETUP };
+static unsigned togg[2] = { TD_STATUS_T_0, TD_STATUS_T_1 };
+
+void td_init(
+    td_t *instance, usb_direction_t dir, void *buffer, size_t size, int toggle)
+{
+	assert(instance);
+	bzero(instance, sizeof(td_t));
+	instance->status = 0
+	    | ((dp[dir] & TD_STATUS_DP_MASK) << TD_STATUS_DP_SHIFT)
+	    | ((CC_NOACCESS2 & TD_STATUS_CC_MASK) << TD_STATUS_CC_SHIFT);
+	if (toggle == 0 || toggle == 1) {
+		instance->status |= togg[toggle] << TD_STATUS_T_SHIFT;
+	}
+	if (dir == USB_DIRECTION_IN) {
+		instance->status |= TD_STATUS_ROUND_FLAG;
+	}
+	if (buffer != NULL) {
+		assert(size != 0);
+		instance->cbp = addr_to_phys(buffer);
+		instance->be = addr_to_phys(buffer + size - 1);
+	}
+}
+/**
+ * @}
+ */
+
Index: uspace/drv/ohci/hw_struct/transfer_descriptor.h
===================================================================
--- uspace/drv/ohci/hw_struct/transfer_descriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/hw_struct/transfer_descriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#ifndef DRV_OHCI_HW_STRUCT_TRANSFER_DESCRIPTOR_H
+#define DRV_OHCI_HW_STRUCT_TRANSFER_DESCRIPTOR_H
+
+#include <bool.h>
+#include <stdint.h>
+#include "../utils/malloc32.h"
+
+#include "completion_codes.h"
+
+/* OHCI TDs can handle up to 8KB buffers, however, it can use max 2 pages.
+ * Using 4KB buffers guarantees the page count condition.
+ * (OHCI assumes 4KB pages) */
+#define OHCI_TD_MAX_TRANSFER (4 * 1024)
+
+typedef struct td {
+	volatile uint32_t status;
+#define TD_STATUS_ROUND_FLAG (1 << 18)
+#define TD_STATUS_DP_MASK (0x3) /* direction/PID */
+#define TD_STATUS_DP_SHIFT (19)
+#define TD_STATUS_DP_SETUP (0x0)
+#define TD_STATUS_DP_OUT (0x1)
+#define TD_STATUS_DP_IN (0x2)
+#define TD_STATUS_DI_MASK (0x7) /* delay interrupt, wait DI frames before int */
+#define TD_STATUS_DI_SHIFT (21)
+#define TD_STATUS_DI_NO_INTERRUPT (0x7)
+#define TD_STATUS_T_MASK (0x3)  /* data toggle 1x = use ED toggle carry */
+#define TD_STATUS_T_SHIFT (24)
+#define TD_STATUS_T_0 (0x2)
+#define TD_STATUS_T_1 (0x3)
+#define TD_STATUS_T_ED (0)
+#define TD_STATUS_EC_MASK (0x3) /* error count */
+#define TD_STATUS_EC_SHIFT (26)
+#define TD_STATUS_CC_MASK (0xf) /* condition code */
+#define TD_STATUS_CC_SHIFT (28)
+
+	volatile uint32_t cbp; /* current buffer ptr, data to be transfered */
+	volatile uint32_t next;
+#define TD_NEXT_PTR_MASK (0xfffffff0)
+#define TD_NEXT_PTR_SHIFT (0)
+
+	volatile uint32_t be; /* buffer end, address of the last byte */
+} __attribute__((packed)) td_t;
+
+void td_init(
+    td_t *instance, usb_direction_t dir, void *buffer, size_t size, int toggle);
+
+inline static void td_set_next(td_t *instance, td_t *next)
+{
+	assert(instance);
+	instance->next = addr_to_phys(next) & TD_NEXT_PTR_MASK;
+}
+
+inline static bool td_is_finished(td_t *instance)
+{
+	assert(instance);
+	int cc = (instance->status >> TD_STATUS_CC_SHIFT) & TD_STATUS_CC_MASK;
+	/* something went wrong, error code is set */
+	if (cc != CC_NOACCESS1 && cc != CC_NOACCESS2) {
+		return true;
+	}
+	/* everything done */
+	if (cc == CC_NOERROR && instance->cbp == 0) {
+		return true;
+	}
+	return false;
+}
+
+static inline int td_error(td_t *instance)
+{
+	assert(instance);
+	int cc = (instance->status >> TD_STATUS_CC_SHIFT) & TD_STATUS_CC_MASK;
+	return cc_to_rc(cc);
+}
+
+static inline size_t td_remain_size(td_t *instance)
+{
+	assert(instance);
+	if (instance->cbp == 0)
+		return 0;
+	return instance->be - instance->cbp + 1;
+}
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/iface.c
===================================================================
--- uspace/drv/ohci/iface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/iface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,441 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky, Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver hc interface implementation
+ */
+#include <ddf/driver.h>
+#include <errno.h>
+
+#include <usb/debug.h>
+#include <usb/host/endpoint.h>
+
+#include "iface.h"
+#include "hc.h"
+
+static inline int setup_batch(
+    ddf_fun_t *fun, usb_target_t target, usb_direction_t direction,
+    void *data, size_t size, void * setup_data, size_t setup_size,
+    usbhc_iface_transfer_in_callback_t in,
+    usbhc_iface_transfer_out_callback_t out, void *arg, const char* name,
+    hc_t **hc, usb_transfer_batch_t **batch)
+{
+	assert(hc);
+	assert(batch);
+	assert(fun);
+	*hc = fun_to_hc(fun);
+	assert(*hc);
+
+	size_t res_bw;
+	endpoint_t *ep = hc_get_endpoint(*hc,
+	    target.address, target.endpoint, direction, &res_bw);
+	if (ep == NULL) {
+		usb_log_error("Endpoint(%d:%d) not registered for %s.\n",
+		    target.address, target.endpoint, name);
+		return ENOENT;
+	}
+
+	usb_log_debug("%s %d:%d %zu(%zu).\n",
+	    name, target.address, target.endpoint, size, ep->max_packet_size);
+
+	const size_t bw = bandwidth_count_usb11(
+	    ep->speed, ep->transfer_type, size, ep->max_packet_size);
+	if (res_bw < bw) {
+		usb_log_error("Endpoint(%d:%d) %s needs %zu bw "
+		    "but only %zu is reserved.\n",
+		    target.address, target.endpoint, name, bw, res_bw);
+		return ENOSPC;
+	}
+
+	*batch = batch_get(
+	    fun, ep, data, size, setup_data, setup_size, in, out, arg);
+	if (!*batch)
+		return ENOMEM;
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Request address interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] speed Speed to associate with the new default address.
+ * @param[out] address Place to write a new address.
+ * @return Error code.
+ */
+static int request_address(
+    ddf_fun_t *fun, usb_speed_t speed, usb_address_t *address)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	assert(address);
+
+	usb_log_debug("Address request with speed %d.\n", speed);
+	*address = device_keeper_get_free_address(&hc->manager, speed);
+	usb_log_debug("Address request with result: %d.\n", *address);
+	if (*address <= 0)
+		return *address;
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Bind address interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address Address of the device
+ * @param[in] handle Devman handle of the device driver.
+ * @return Error code.
+ */
+static int bind_address(
+  ddf_fun_t *fun, usb_address_t address, devman_handle_t handle)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Address bind %d-%" PRIun ".\n", address, handle);
+	usb_device_keeper_bind(&hc->manager, address, handle);
+	return EOK;
+}
+
+
+/** Find device handle by address interface function.
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address Address in question.
+ * @param[out] handle Where to store device handle if found.
+ * @return Error code.
+ */
+static int find_by_address(ddf_fun_t *fun, usb_address_t address,
+    devman_handle_t *handle)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	bool found =
+	    usb_device_keeper_find_by_address(&hc->manager, address, handle);
+	return found ? EOK : ENOENT;
+}
+
+/*----------------------------------------------------------------------------*/
+/** Release address interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address USB address to be released.
+ * @return Error code.
+ */
+static int release_address(ddf_fun_t *fun, usb_address_t address)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Address release %d.\n", address);
+	usb_device_keeper_release(&hc->manager, address);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Register endpoint for bandwidth reservation.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] address USB address of the device.
+ * @param[in] ep_speed Endpoint speed (invalid means to use device one).
+ * @param[in] endpoint Endpoint number.
+ * @param[in] transfer_type USB transfer type.
+ * @param[in] direction Endpoint data direction.
+ * @param[in] max_packet_size Max packet size of the endpoint.
+ * @param[in] interval Polling interval.
+ * @return Error code.
+ */
+static int register_endpoint(ddf_fun_t *fun,
+    usb_address_t address, usb_speed_t ep_speed, usb_endpoint_t endpoint,
+    usb_transfer_type_t transfer_type, usb_direction_t direction,
+    size_t max_packet_size, unsigned int interval)
+{
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+
+	usb_speed_t speed = usb_device_keeper_get_speed(&hc->manager, address);
+	if (speed >= USB_SPEED_MAX) {
+		speed = ep_speed;
+	}
+	const size_t size = max_packet_size;
+
+	usb_log_debug("Register endpoint %d:%d %s %s(%d) %zu(%zu) %u.\n",
+	    address, endpoint, usb_str_transfer_type(transfer_type),
+	    usb_str_speed(speed), direction, size, max_packet_size, interval);
+
+	return hc_add_endpoint(hc, address, endpoint, speed, transfer_type,
+	    direction, max_packet_size, size, interval);
+}
+/*----------------------------------------------------------------------------*/
+static int unregister_endpoint(
+    ddf_fun_t *fun, usb_address_t address,
+    usb_endpoint_t endpoint, usb_direction_t direction)
+{
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Unregister endpoint %d:%d %d.\n",
+	    address, endpoint, direction);
+	return hc_remove_endpoint(hc, address, endpoint, direction);
+}
+/*----------------------------------------------------------------------------*/
+/** Schedule interrupt out transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Data to be sent (in USB endianess, allocated and deallocated
+ *	by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int interrupt_out(
+    ddf_fun_t *fun, usb_target_t target, void *data,
+    size_t size, usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_OUT, data, size,
+	    NULL, 0, NULL, callback, arg, "Interrupt OUT", &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	batch_interrupt_out(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Schedule interrupt in transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Buffer where to store the data (in USB endianess,
+ *	allocated and deallocated by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int interrupt_in(
+    ddf_fun_t *fun, usb_target_t target, void *data,
+    size_t size, usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_IN, data, size,
+	    NULL, 0, callback, NULL, arg, "Interrupt IN", &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	batch_interrupt_in(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Schedule bulk out transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Data to be sent (in USB endianess, allocated and deallocated
+ *	by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int bulk_out(
+    ddf_fun_t *fun, usb_target_t target, void *data,
+    size_t size, usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_OUT, data, size,
+	    NULL, 0, NULL, callback, arg, "Bulk OUT", &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	batch_bulk_out(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Schedule bulk in transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Buffer where to store the data (in USB endianess,
+ *	allocated and deallocated by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int bulk_in(
+    ddf_fun_t *fun, usb_target_t target, void *data,
+    size_t size, usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_IN, data, size,
+	    NULL, 0, callback, NULL, arg, "Bulk IN", &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	batch_bulk_in(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Schedule control write transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] setup_packet Setup packet buffer (in USB endianess, allocated
+ *	and deallocated by the caller).
+ * @param[in] setup_size Size of @p setup_packet buffer in bytes.
+ * @param[in] data_buffer Data buffer (in USB endianess, allocated and
+ *	deallocated by the caller).
+ * @param[in] size Size of @p data_buffer buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int control_write(
+    ddf_fun_t *fun, usb_target_t target,
+    void *setup_data, size_t setup_size, void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_BOTH, data, size,
+	    setup_data, setup_size, NULL, callback, arg, "Control WRITE",
+	    &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	usb_endpoint_manager_reset_if_need(&hc->ep_manager, target, setup_data);
+	batch_control_write(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Schedule control read transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] setup_packet Setup packet buffer (in USB endianess, allocated
+ *	and deallocated by the caller).
+ * @param[in] setup_size Size of @p setup_packet buffer in bytes.
+ * @param[in] data_buffer Buffer where to store the data (in USB endianess,
+ *	allocated and deallocated by the caller).
+ * @param[in] size Size of @p data_buffer buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int control_read(
+    ddf_fun_t *fun, usb_target_t target,
+    void *setup_data, size_t setup_size, void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_BOTH, data, size,
+	    setup_data, setup_size, callback, NULL, arg, "Control READ",
+	    &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	batch_control_read(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+usbhc_iface_t hc_iface = {
+	.request_address = request_address,
+	.bind_address = bind_address,
+	.find_by_address = find_by_address,
+	.release_address = release_address,
+
+	.register_endpoint = register_endpoint,
+	.unregister_endpoint = unregister_endpoint,
+
+	.interrupt_out = interrupt_out,
+	.interrupt_in = interrupt_in,
+
+	.bulk_out = bulk_out,
+	.bulk_in = bulk_in,
+
+	.control_write = control_write,
+	.control_read = control_read,
+};
+/**
+ * @}
+ */
Index: uspace/drv/ohci/iface.h
===================================================================
--- uspace/drv/ohci/iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * Common OHCI definitions.
+ */
+#ifndef DRV_OHCI_IFACE_H
+#define DRV_OHCI_IFACE_H
+
+#include <usbhc_iface.h>
+
+extern usbhc_iface_t hc_iface;
+
+#endif
+/**
+ * @}
+ */
+
Index: uspace/drv/ohci/main.c
===================================================================
--- uspace/drv/ohci/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * Main routines of OHCI driver.
+ */
+#include <ddf/driver.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/debug.h>
+
+#include "ohci.h"
+
+#define NAME "ohci"
+
+/** Initializes a new ddf driver instance of OHCI hcd.
+ *
+ * @param[in] device DDF instance of the device to initialize.
+ * @return Error code.
+ */
+static int ohci_add_device(ddf_dev_t *device)
+{
+	usb_log_debug("ohci_add_device() called\n");
+	assert(device);
+
+	int ret = device_setup_ohci(device);
+	if (ret != EOK) {
+		usb_log_error("Failed to initialize OHCI driver: %s.\n",
+		    str_error(ret));
+		return ret;
+	}
+	usb_log_info("Controlling new OHCI device '%s'.\n", device->name);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+static driver_ops_t ohci_driver_ops = {
+	.add_device = ohci_add_device,
+};
+/*----------------------------------------------------------------------------*/
+static driver_t ohci_driver = {
+	.name = NAME,
+	.driver_ops = &ohci_driver_ops
+};
+/*----------------------------------------------------------------------------*/
+/** Initializes global driver structures (NONE).
+ *
+ * @param[in] argc Nmber of arguments in argv vector (ignored).
+ * @param[in] argv Cmdline argument vector (ignored).
+ * @return Error code.
+ *
+ * Driver debug level is set here.
+ */
+int main(int argc, char *argv[])
+{
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+	return ddf_driver_main(&ohci_driver);
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/ohci.c
===================================================================
--- uspace/drv/ohci/ohci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/ohci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,247 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#include <errno.h>
+#include <str_error.h>
+#include <ddf/interrupt.h>
+#include <usb_iface.h>
+#include <usb/usb.h>
+#include <usb/ddfiface.h>
+#include <usb/debug.h>
+
+#include "ohci.h"
+#include "iface.h"
+#include "pci.h"
+#include "hc.h"
+#include "root_hub.h"
+
+typedef struct ohci {
+	ddf_fun_t *hc_fun;
+	ddf_fun_t *rh_fun;
+
+	hc_t hc;
+	rh_t rh;
+} ohci_t;
+
+static inline ohci_t * dev_to_ohci(ddf_dev_t *dev)
+{
+	assert(dev);
+	assert(dev->driver_data);
+	return dev->driver_data;
+}
+
+/** IRQ handling callback, identifies device
+ *
+ * @param[in] dev DDF instance of the device to use.
+ * @param[in] iid (Unused).
+ * @param[in] call Pointer to the call that represents interrupt.
+ */
+static void irq_handler(ddf_dev_t *dev, ipc_callid_t iid, ipc_call_t *call)
+{
+	hc_t *hc = &dev_to_ohci(dev)->hc;
+	assert(hc);
+	const uint16_t status = IPC_GET_ARG1(*call);
+	hc_interrupt(hc, status);
+}
+/*----------------------------------------------------------------------------*/
+/** Get address of the device identified by handle.
+ *
+ * @param[in] dev DDF instance of the device to use.
+ * @param[in] iid (Unused).
+ * @param[in] call Pointer to the call that represents interrupt.
+ */
+static int usb_iface_get_address(
+    ddf_fun_t *fun, devman_handle_t handle, usb_address_t *address)
+{
+	assert(fun);
+	usb_device_keeper_t *manager = &dev_to_ohci(fun->dev)->hc.manager;
+
+	usb_address_t addr = usb_device_keeper_find(manager, handle);
+	if (addr < 0) {
+		return addr;
+	}
+
+	if (address != NULL) {
+		*address = addr;
+	}
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Gets handle of the respective hc (this device, hc function).
+ *
+ * @param[in] root_hub_fun Root hub function seeking hc handle.
+ * @param[out] handle Place to write the handle.
+ * @return Error code.
+ */
+static int usb_iface_get_hc_handle(
+    ddf_fun_t *fun, devman_handle_t *handle)
+{
+	assert(fun);
+	ddf_fun_t *hc_fun = dev_to_ohci(fun->dev)->hc_fun;
+	assert(hc_fun);
+
+	if (handle != NULL)
+		*handle = hc_fun->handle;
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Root hub USB interface */
+static usb_iface_t usb_iface = {
+	.get_hc_handle = usb_iface_get_hc_handle,
+	.get_address = usb_iface_get_address
+};
+/*----------------------------------------------------------------------------*/
+/** Standard USB HC options (HC interface) */
+static ddf_dev_ops_t hc_ops = {
+	.interfaces[USBHC_DEV_IFACE] = &hc_iface, /* see iface.h/c */
+};
+/*----------------------------------------------------------------------------*/
+/** Standard USB RH options (RH interface) */
+static ddf_dev_ops_t rh_ops = {
+	.interfaces[USB_DEV_IFACE] = &usb_iface,
+};
+/*----------------------------------------------------------------------------*/
+/** Initialize hc and rh ddf structures and their respective drivers.
+ *
+ * @param[in] device DDF instance of the device to use.
+ * @param[in] instance OHCI structure to use.
+ *
+ * This function does all the preparatory work for hc and rh drivers:
+ *  - gets device hw resources
+ *  - disables OHCI legacy support
+ *  - asks for interrupt
+ *  - registers interrupt handler
+ */
+int device_setup_ohci(ddf_dev_t *device)
+{
+	ohci_t *instance = malloc(sizeof(ohci_t));
+	if (instance == NULL) {
+		usb_log_error("Failed to allocate OHCI driver.\n");
+		return ENOMEM;
+	}
+
+#define CHECK_RET_DEST_FREE_RETURN(ret, message...) \
+if (ret != EOK) { \
+	if (instance->hc_fun) { \
+		instance->hc_fun->ops = NULL; \
+		instance->hc_fun->driver_data = NULL; \
+		ddf_fun_destroy(instance->hc_fun); \
+	} \
+	if (instance->rh_fun) { \
+		instance->rh_fun->ops = NULL; \
+		instance->rh_fun->driver_data = NULL; \
+		ddf_fun_destroy(instance->rh_fun); \
+	} \
+	free(instance); \
+	usb_log_error(message); \
+	return ret; \
+} else (void)0
+
+	instance->rh_fun = NULL;
+	instance->hc_fun = ddf_fun_create(device, fun_exposed, "ohci-hc");
+	int ret = instance->hc_fun ? EOK : ENOMEM;
+	CHECK_RET_DEST_FREE_RETURN(ret, "Failed to create OHCI HC function.\n");
+	instance->hc_fun->ops = &hc_ops;
+	instance->hc_fun->driver_data = &instance->hc;
+
+	instance->rh_fun = ddf_fun_create(device, fun_inner, "ohci-rh");
+	ret = instance->rh_fun ? EOK : ENOMEM;
+	CHECK_RET_DEST_FREE_RETURN(ret, "Failed to create OHCI RH function.\n");
+	instance->rh_fun->ops = &rh_ops;
+
+	uintptr_t reg_base = 0;
+	size_t reg_size = 0;
+	int irq = 0;
+
+	ret = pci_get_my_registers(device, &reg_base, &reg_size, &irq);
+	CHECK_RET_DEST_FREE_RETURN(ret,
+	    "Failed to get memory addresses for %" PRIun ": %s.\n",
+	    device->handle, str_error(ret));
+	usb_log_debug("Memory mapped regs at %p (size %zu), IRQ %d.\n",
+	    (void *) reg_base, reg_size, irq);
+
+	bool interrupts = false;
+#ifdef CONFIG_USBHC_NO_INTERRUPTS
+	usb_log_warning("Interrupts disabled in OS config, "
+	    "falling back to polling.\n");
+#else
+	ret = pci_enable_interrupts(device);
+	if (ret != EOK) {
+		usb_log_warning("Failed to enable interrupts: %s.\n",
+		    str_error(ret));
+		usb_log_info("HW interrupts not available, "
+		    "falling back to polling.\n");
+	} else {
+		usb_log_debug("Hw interrupts enabled.\n");
+		interrupts = true;
+	}
+#endif
+
+	ret = hc_init(&instance->hc, reg_base, reg_size, interrupts);
+	CHECK_RET_DEST_FREE_RETURN(ret, "Failed(%d) to init ohci-hcd.\n", ret);
+
+#define CHECK_RET_FINI_RETURN(ret, message...) \
+if (ret != EOK) { \
+	hc_fini(&instance->hc); \
+	CHECK_RET_DEST_FREE_RETURN(ret, message); \
+} else (void)0
+
+	/* It does no harm if we register this on polling */
+	ret = register_interrupt_handler(device, irq, irq_handler,
+	    &instance->hc.interrupt_code);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to register interrupt handler.\n", ret);
+
+	ret = ddf_fun_bind(instance->hc_fun);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to bind OHCI device function: %s.\n",
+	    ret, str_error(ret));
+
+	ret = ddf_fun_add_to_class(instance->hc_fun, USB_HC_DDF_CLASS_NAME);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed to add OHCI to HC class: %s.\n", str_error(ret));
+
+	device->driver_data = instance;
+
+	hc_start_hw(&instance->hc);
+	hc_register_hub(&instance->hc, instance->rh_fun);
+	return EOK;
+
+#undef CHECK_RET_DEST_FUN_RETURN
+#undef CHECK_RET_FINI_RETURN
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/ohci.h
===================================================================
--- uspace/drv/ohci/ohci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/ohci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver main structure for both host controller and root-hub.
+ */
+#ifndef DRV_OHCI_OHCI_H
+#define DRV_OHCI_OHCI_H
+#include <ddi.h>
+#include <ddf/driver.h>
+
+int device_setup_ohci(ddf_dev_t *device);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/ohci.ma
===================================================================
--- uspace/drv/ohci/ohci.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/ohci.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,11 @@
+10 pci/ven=106b&dev=003f
+10 pci/ven=10de&dev=0aa5
+
+10 pci/ven=1002&dev=4374
+10 pci/ven=1002&dev=4375
+
+10 pci/ven=1002&dev=4387
+10 pci/ven=1002&dev=4388
+10 pci/ven=1002&dev=4389
+10 pci/ven=1002&dev=438a
+10 pci/ven=1002&dev=438b
Index: uspace/drv/ohci/ohci_regs.h
===================================================================
--- uspace/drv/ohci/ohci_regs.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/ohci_regs.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,219 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohcihc
+ * @{
+ */
+/** @file
+ * @brief OHCI host controller register structure
+ */
+#ifndef DRV_OHCI_OHCI_REGS_H
+#define DRV_OHCI_OHCI_REGS_H
+#include <stdint.h>
+
+/** OHCI memory mapped registers structure */
+typedef struct ohci_regs {
+	const volatile uint32_t revision;
+	volatile uint32_t control;
+#define C_CSBR_MASK (0x3) /* Control-bulk service ratio */
+#define C_CSBR_1_1  (0x0)
+#define C_CSBR_1_2  (0x1)
+#define C_CSBR_1_3  (0x2)
+#define C_CSBR_1_4  (0x3)
+#define C_CSBR_SHIFT (0)
+
+#define C_PLE (1 << 2)   /* Periodic list enable */
+#define C_IE  (1 << 3)   /* Isochronous enable */
+#define C_CLE (1 << 4)   /* Control list enable */
+#define C_BLE (1 << 5)   /* Bulk list enable */
+
+#define C_HCFS_MASK        (0x3) /* Host controller functional state */
+#define C_HCFS_RESET       (0x0)
+#define C_HCFS_RESUME      (0x1)
+#define C_HCFS_OPERATIONAL (0x2)
+#define C_HCFS_SUSPEND     (0x3)
+#define C_HCFS_SHIFT       (6)
+
+#define C_IR  (1 << 8)   /* Interrupt routing, make sure it's 0 */
+#define C_RWC (1 << 9)   /* Remote wakeup connected, host specific */
+#define C_RWE (1 << 10)  /* Remote wakeup enable */
+
+	volatile uint32_t command_status;
+#define CS_HCR (1 << 0)   /* Host controller reset */
+#define CS_CLF (1 << 1)   /* Control list filled */
+#define CS_BLF (1 << 2)   /* Bulk list filled */
+#define CS_OCR (1 << 3)   /* Ownership change request */
+#define CS_SOC_MASK (0x3) /* Scheduling overrun count */
+#define CS_SOC_SHIFT (16)
+
+	/** Interupt enable/disable/status,
+	 * reads give the same value,
+	 * writing causes enable/disable,
+	 * status is write-clean (writing 1 clears the bit*/
+	volatile uint32_t interrupt_status;
+	volatile uint32_t interrupt_enable;
+	volatile uint32_t interrupt_disable;
+#define I_SO   (1 << 0)   /* Scheduling overrun */
+#define I_WDH  (1 << 1)   /* Done head write-back */
+#define I_SF   (1 << 2)   /* Start of frame */
+#define I_RD   (1 << 3)   /* Resume detect */
+#define I_UE   (1 << 4)   /* Unrecoverable error */
+#define I_FNO  (1 << 5)   /* Frame number overflow */
+#define I_RHSC (1 << 6)   /* Root hub status change */
+#define I_OC   (1 << 30)  /* Ownership change */
+#define I_MI   (1 << 31)  /* Master interrupt (all/any interrupts) */
+
+	/** HCCA pointer (see hw_struct hcca.h) */
+	volatile uint32_t hcca;
+#define HCCA_PTR_MASK 0xffffff00 /* HCCA is 256B aligned */
+
+	/** Currently executed periodic endpoint */
+	const volatile uint32_t periodic_current;
+
+	/** The first control endpoint */
+	volatile uint32_t control_head;
+
+	/** Currently executed control endpoint */
+	volatile uint32_t control_current;
+
+	/** The first bulk endpoint */
+	volatile uint32_t bulk_head;
+
+	/** Currently executed bulk endpoint */
+	volatile uint32_t bulk_current;
+
+	/** Done TD list, this value is periodically written to HCCA */
+	const volatile uint32_t done_head;
+
+	/** Frame time and max packet size for all transfers */
+	volatile uint32_t fm_interval;
+#define FMI_FI_MASK (0x3fff) /* Frame interval in bit times (should be 11999)*/
+#define FMI_FI_SHIFT (0)
+#define FMI_FSMPS_MASK (0x7fff) /* Full speed max packet size */
+#define FMI_FSMPS_SHIFT (16)
+#define FMI_TOGGLE_FLAG (1 << 31)
+
+	/** Bit times remaining in current frame */
+	const volatile uint32_t fm_remaining;
+#define FMR_FR_MASK FMI_FI_MASK
+#define FMR_FR_SHIFT FMI_FI_SHIFT
+#define FMR_TOGGLE_FLAG FMI_TOGGLE_FLAG
+
+	/** Frame number */
+	const volatile uint32_t fm_number;
+#define FMN_NUMBER_MASK (0xffff)
+
+	/** Remaining bit time in frame to start periodic transfers */
+	volatile uint32_t periodic_start;
+#define PS_PS_MASK (0x3fff) /* bit time when periodic get priority (0x3e67) */
+
+	/** Threshold for starting LS transaction */
+	volatile uint32_t ls_threshold;
+#define LST_LST_MASK (0x7fff)
+
+	/** The first root hub control register */
+	volatile uint32_t rh_desc_a;
+#define RHDA_NDS_MASK (0xff) /* Number of downstream ports, max 15 */
+#define RHDA_NDS_SHIFT (0)
+#define RHDA_PSM_FLAG  (1 << 8)  /* Power switching mode: 0-global, 1-per port*/
+#define RHDA_NPS_FLAG  (1 << 9)  /* No power switch: 1-power on, 0-use PSM*/
+#define RHDA_DT_FLAG   (1 << 10) /* 1-Compound device, must be 0 */
+#define RHDA_OCPM_FLAG (1 << 11) /* Over-current mode: 0-global, 1-per port */
+#define RHDA_NOCP      (1 << 12) /* OC control: 0-use OCPM, 1-OC off */
+#define RHDA_POTPGT_MASK (0xff)  /* Power on to power good time */
+#define RHDA_POTPGT_SHIFT (24)
+
+	/** The other root hub control register */
+	volatile uint32_t rh_desc_b;
+#define RHDB_DR_MASK (0xffff) /* Device removable mask */
+#define RHDB_DR_SHIFT (0)
+#define RHDB_PCC_MASK (0xffff) /* Power control mask */
+#define RHDB_PCC_SHIFT (16)
+
+/* Port device removable status */
+#define RHDB_DR_FLAG(port) (((1 << port) & RHDB_DR_MASK) << RHDB_DR_SHIFT)
+/* Port power control status: 1-per port power control, 0-global power switch */
+#define RHDB_PPC_FLAG(port) (((1 << port) & RHDB_DR_MASK) << RHDB_DR_SHIFT)
+
+	/** Root hub status register */
+	volatile uint32_t rh_status;
+#define RHS_LPS_FLAG  (1 <<  0)/* read: 0,
+                                * write: 0-no effect,
+                                *        1-turn off port power for ports
+                                *        specified in PPCM(RHDB), or all ports,
+                                *        if power is set globally */
+#define RHS_CLEAR_PORT_POWER RHS_LPS_FLAG /* synonym for the above */
+#define RHS_OCI_FLAG  (1 <<  1)/* Over-current indicator, if per-port: 0 */
+#define RHS_DRWE_FLAG (1 << 15)/* read: 0-connect status change does not wake HC
+                                *       1-connect status change wakes HC
+                                * write: 1-set DRWE, 0-no effect */
+#define RHS_SET_DRWE RHS_DRWE_FLAG
+#define RHS_LPSC_FLAG (1 << 16)/* read: 0,
+                                * write: 0-no effect
+                                *        1-turn on port power for ports
+                                *        specified in PPCM(RHDB), or all ports,
+                                *        if power is set globally */
+#define RHS_SET_PORT_POWER RHS_LPSC_FLAG /* synonym for the above */
+#define RHS_OCIC_FLAG (1 << 17)/* Over-current indicator change   */
+#define RHS_CLEAR_DRWE (1 << 31)
+
+	/** Root hub per port status */
+	volatile uint32_t rh_port_status[];
+#define RHPS_CCS_FLAG (1 << 0) /* r: current connect status,
+                                * w: 1-clear port enable, 0-nothing */
+#define RHPS_CLEAR_PORT_ENABLE RHPS_CCS_FLAG
+#define RHPS_PES_FLAG (1 << 1) /* r: port enable status
+                                * w: 1-set port enable, 0-nothing */
+#define RHPS_SET_PORT_ENABLE RHPS_PES_FLAG
+#define RHPS_PSS_FLAG (1 << 2) /* r: port suspend status
+                                * w: 1-set port suspend, 0-nothing */
+#define RHPS_SET_PORT_SUSPEND RHPS_PSS_FLAG
+#define RHPS_POCI_FLAG (1 << 3) /* r: port over-current (if reports are per-port
+                                 * w: 1-clear port suspend (start resume
+                                 *      if suspened)
+                                 *    0-nothing */
+#define RHPS_CLEAR_PORT_SUSPEND RHPS_POCI_FLAG
+#define RHPS_PRS_FLAG (1 << 4) /* r: port reset status
+                                * w: 1-set port reset, 0-nothing */
+#define RHPS_SET_PORT_RESET RHPS_PRS_FLAG
+#define RHPS_PPS_FLAG (1 << 8) /* r: port power status
+                                * w: 1-set port power, 0-nothing */
+#define RHPS_SET_PORT_POWER RHPS_PPS_FLAG
+#define RHPS_LSDA_FLAG (1 << 9) /* r: low speed device attached
+                                 * w: 1-clear port power, 0-nothing */
+#define RHPS_CLEAR_PORT_POWER RHPS_LSDA_FLAG
+#define RHPS_CSC_FLAG  (1 << 16) /* connect status change Write-Clean */
+#define RHPS_PESC_FLAG (1 << 17) /* port enable status change WC */
+#define RHPS_PSSC_FLAG (1 << 18) /* port suspend status change WC */
+#define RHPS_OCIC_FLAG (1 << 19) /* port over-current change WC */
+#define RHPS_PRSC_FLAG (1 << 20) /* port reset status change WC */
+#define RHPS_CHANGE_WC_MASK 0x1f0000
+} __attribute__((packed)) ohci_regs_t;
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/pci.c
===================================================================
--- uspace/drv/ohci/pci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/pci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * @addtogroup drvusbohci
+ * @{
+ */
+/**
+ * @file
+ * PCI related functions needed by the OHCI driver.
+ */
+#include <errno.h>
+#include <assert.h>
+#include <as.h>
+#include <devman.h>
+#include <ddi.h>
+#include <libarch/ddi.h>
+#include <device/hw_res.h>
+
+#include <usb/debug.h>
+#include <pci_dev_iface.h>
+
+#include "pci.h"
+
+/** Get address of registers and IRQ for given device.
+ *
+ * @param[in] dev Device asking for the addresses.
+ * @param[out] mem_reg_address Base address of the memory range.
+ * @param[out] mem_reg_size Size of the memory range.
+ * @param[out] irq_no IRQ assigned to the device.
+ * @return Error code.
+ */
+int pci_get_my_registers(ddf_dev_t *dev,
+    uintptr_t *mem_reg_address, size_t *mem_reg_size, int *irq_no)
+{
+	assert(dev);
+	assert(mem_reg_address);
+	assert(mem_reg_size);
+	assert(irq_no);
+
+	int parent_phone = devman_parent_device_connect(dev->handle,
+	    IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+	int rc;
+
+	hw_resource_list_t hw_resources;
+	rc = hw_res_get_resource_list(parent_phone, &hw_resources);
+	if (rc != EOK) {
+		async_hangup(parent_phone);
+		return rc;
+	}
+
+	uintptr_t mem_address = 0;
+	size_t mem_size = 0;
+	bool mem_found = false;
+
+	int irq = 0;
+	bool irq_found = false;
+
+	size_t i;
+	for (i = 0; i < hw_resources.count; i++) {
+		hw_resource_t *res = &hw_resources.resources[i];
+		switch (res->type)
+		{
+		case INTERRUPT:
+			irq = res->res.interrupt.irq;
+			irq_found = true;
+			usb_log_debug2("Found interrupt: %d.\n", irq);
+			break;
+
+		case MEM_RANGE:
+			if (res->res.mem_range.address != 0
+			    && res->res.mem_range.size != 0 ) {
+				mem_address = res->res.mem_range.address;
+				mem_size = res->res.mem_range.size;
+				usb_log_debug2("Found mem: %p %zu.\n",
+				    (void *) mem_address, mem_size);
+				mem_found = true;
+				}
+		default:
+			break;
+		}
+	}
+
+	if (mem_found && irq_found) {
+		*mem_reg_address = mem_address;
+		*mem_reg_size = mem_size;
+		*irq_no = irq;
+		rc = EOK;
+	} else {
+		rc = ENOENT;
+	}
+
+	async_hangup(parent_phone);
+	return rc;
+}
+/*----------------------------------------------------------------------------*/
+/** Calls the PCI driver with a request to enable interrupts
+ *
+ * @param[in] device Device asking for interrupts
+ * @return Error code.
+ */
+int pci_enable_interrupts(ddf_dev_t *device)
+{
+	int parent_phone =
+	    devman_parent_device_connect(device->handle, IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+	bool enabled = hw_res_enable_interrupt(parent_phone);
+	async_hangup(parent_phone);
+	return enabled ? EOK : EIO;
+}
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
Index: uspace/drv/ohci/pci.h
===================================================================
--- uspace/drv/ohci/pci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/pci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * PCI related functions needed by OHCI driver.
+ */
+#ifndef DRV_OHCI_PCI_H
+#define DRV_OHCI_PCI_H
+
+#include <ddf/driver.h>
+
+int pci_get_my_registers(ddf_dev_t *, uintptr_t *, size_t *, int *);
+int pci_enable_interrupts(ddf_dev_t *);
+int pci_disable_legacy(ddf_dev_t *);
+
+#endif
+/**
+ * @}
+ */
+
Index: uspace/drv/ohci/root_hub.c
===================================================================
--- uspace/drv/ohci/root_hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/root_hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,944 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#include <assert.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/debug.h>
+
+#include "root_hub.h"
+#include <usb/classes/classes.h>
+#include <usb/dev/driver.h>
+#include "ohci_regs.h"
+
+#include <usb/dev/request.h>
+#include <usb/classes/hub.h>
+
+/**
+ * standart device descriptor for ohci root hub
+ */
+static const usb_standard_device_descriptor_t ohci_rh_device_descriptor = {
+	.configuration_count = 1,
+	.descriptor_type = USB_DESCTYPE_DEVICE,
+	.device_class = USB_CLASS_HUB,
+	.device_protocol = 0,
+	.device_subclass = 0,
+	.device_version = 0,
+	.length = sizeof (usb_standard_device_descriptor_t),
+	.max_packet_size = 8,
+	.vendor_id = 0x16db,
+	.product_id = 0x0001,
+	.str_serial_number = 0,
+	.usb_spec_version = 0x110,
+};
+
+/**
+ * standart configuration descriptor with filled common values
+ * for ohci root hubs
+ */
+static const usb_standard_configuration_descriptor_t ohci_rh_conf_descriptor = {
+	.attributes = 1 << 7,
+	.configuration_number = 1,
+	.descriptor_type = USB_DESCTYPE_CONFIGURATION,
+	.interface_count = 1,
+	.length = sizeof (usb_standard_configuration_descriptor_t),
+	.max_power = 100,
+	.str_configuration = 0,
+};
+
+/**
+ * standart ohci root hub interface descriptor
+ */
+static const usb_standard_interface_descriptor_t ohci_rh_iface_descriptor = {
+	.alternate_setting = 0,
+	.descriptor_type = USB_DESCTYPE_INTERFACE,
+	.endpoint_count = 1,
+	.interface_class = USB_CLASS_HUB,
+	.interface_number = 1,
+	.interface_protocol = 0,
+	.interface_subclass = 0,
+	.length = sizeof (usb_standard_interface_descriptor_t),
+	.str_interface = 0,
+};
+
+/**
+ * standart ohci root hub endpoint descriptor
+ */
+static const usb_standard_endpoint_descriptor_t ohci_rh_ep_descriptor = {
+	.attributes = USB_TRANSFER_INTERRUPT,
+	.descriptor_type = USB_DESCTYPE_ENDPOINT,
+	.endpoint_address = 1 + (1 << 7),
+	.length = sizeof (usb_standard_endpoint_descriptor_t),
+	.max_packet_size = 8,
+	.poll_interval = 255,
+};
+
+/**
+ * bitmask of hub features that are valid to be cleared
+ */
+static const uint32_t hub_clear_feature_valid_mask =
+    RHS_OCIC_FLAG |
+    RHS_CLEAR_PORT_POWER;
+
+/**
+ * bitmask of hub features that are cleared by writing 1 (and not 0)
+ */
+static const uint32_t hub_clear_feature_by_writing_one_mask =
+    RHS_CLEAR_PORT_POWER;
+
+/**
+ * bitmask of hub features that are valid to be set
+ */
+static const uint32_t hub_set_feature_valid_mask =
+    RHS_LPSC_FLAG |
+    RHS_OCIC_FLAG;
+
+/**
+ * bitmask of hub features that are set by writing 1 and cleared by writing 0
+ */
+static const uint32_t hub_set_feature_direct_mask =
+    RHS_SET_PORT_POWER;
+
+/**
+ * bitmask of port features that are valid to be set
+ */
+static const uint32_t port_set_feature_valid_mask =
+    RHPS_SET_PORT_ENABLE |
+    RHPS_SET_PORT_SUSPEND |
+    RHPS_SET_PORT_RESET |
+    RHPS_SET_PORT_POWER;
+
+/**
+ * bitmask of port features that can be cleared
+ */
+static const uint32_t port_clear_feature_valid_mask =
+    RHPS_CCS_FLAG |
+    RHPS_SET_PORT_SUSPEND |
+    RHPS_POCI_FLAG |
+    RHPS_SET_PORT_POWER |
+    RHPS_CSC_FLAG |
+    RHPS_PESC_FLAG |
+    RHPS_PSSC_FLAG |
+    RHPS_OCIC_FLAG |
+    RHPS_PRSC_FLAG;
+
+//note that USB_HUB_FEATURE_PORT_POWER bit is translated into
+//USB_HUB_FEATURE_PORT_LOW_SPEED for port set feature request
+
+/**
+ * bitmask with port status changes
+ */
+static const uint32_t port_status_change_mask = RHPS_CHANGE_WC_MASK;
+
+static int create_serialized_hub_descriptor(rh_t *instance);
+
+static int rh_init_descriptors(rh_t *instance);
+
+static int process_get_port_status_request(rh_t *instance, uint16_t port,
+    usb_transfer_batch_t * request);
+
+static int process_get_hub_status_request(rh_t *instance,
+    usb_transfer_batch_t * request);
+
+static int process_get_status_request(rh_t *instance,
+    usb_transfer_batch_t * request);
+
+static void create_interrupt_mask_in_instance(rh_t *instance);
+
+static int process_get_descriptor_request(rh_t *instance,
+    usb_transfer_batch_t *request);
+
+static int process_get_configuration_request(rh_t *instance,
+    usb_transfer_batch_t *request);
+
+static int process_hub_feature_set_request(rh_t *instance, uint16_t feature);
+
+static int process_hub_feature_clear_request(rh_t *instance,
+    uint16_t feature);
+
+static int process_port_feature_set_request(rh_t *instance,
+    uint16_t feature, uint16_t port);
+
+static int process_port_feature_clear_request(rh_t *instance,
+    uint16_t feature, uint16_t port);
+
+static int process_address_set_request(rh_t *instance,
+    uint16_t address);
+
+static int process_request_with_output(rh_t *instance,
+    usb_transfer_batch_t *request);
+
+static int process_request_with_input(rh_t *instance,
+    usb_transfer_batch_t *request);
+
+static int process_request_without_data(rh_t *instance,
+    usb_transfer_batch_t *request);
+
+static int process_ctrl_request(rh_t *instance, usb_transfer_batch_t *request);
+
+static int process_interrupt_mask_in_instance(rh_t *instance, usb_transfer_batch_t * request);
+
+static bool is_zeros(void * buffer, size_t size);
+
+/** Root hub initialization
+ * @return Error code.
+ */
+int rh_init(rh_t *instance, ohci_regs_t *regs) {
+	assert(instance);
+	instance->registers = regs;
+	instance->port_count =
+	    (instance->registers->rh_desc_a >> RHDA_NDS_SHIFT) & RHDA_NDS_MASK;
+	int opResult = rh_init_descriptors(instance);
+	if (opResult != EOK) {
+		return opResult;
+	}
+	// set port power mode to no-power-switching
+	instance->registers->rh_desc_a |= RHDA_NPS_FLAG;
+	instance->unfinished_interrupt_transfer = NULL;
+	instance->interrupt_mask_size = (instance->port_count + 8) / 8;
+	instance->interrupt_buffer = malloc(instance->interrupt_mask_size);
+	if (!instance->interrupt_buffer)
+		return ENOMEM;
+
+	usb_log_info("OHCI root hub with %zu ports initialized.\n",
+	    instance->port_count);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process root hub request
+ *
+ * @param instance root hub instance
+ * @param request structure containing both request and response information
+ * @return error code
+ */
+int rh_request(rh_t *instance, usb_transfer_batch_t *request) {
+	assert(instance);
+	assert(request);
+	int opResult;
+	if (request->ep->transfer_type == USB_TRANSFER_CONTROL) {
+		usb_log_info("Root hub got CONTROL packet\n");
+		opResult = process_ctrl_request(instance, request);
+		usb_transfer_batch_finish_error(request, opResult);
+	} else if (request->ep->transfer_type == USB_TRANSFER_INTERRUPT) {
+		usb_log_info("Root hub got INTERRUPT packet\n");
+		create_interrupt_mask_in_instance(instance);
+		if (is_zeros(instance->interrupt_buffer,
+		    instance->interrupt_mask_size)) {
+			usb_log_debug("No changes..\n");
+			instance->unfinished_interrupt_transfer = request;
+			//will be finished later
+		} else {
+			usb_log_debug("Processing changes..\n");
+			process_interrupt_mask_in_instance(instance, request);
+		}
+		opResult = EOK;
+	} else {
+
+		opResult = EINVAL;
+		usb_transfer_batch_finish_error(request, opResult);
+	}
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process interrupt on a hub
+ *
+ * If there is no pending interrupt transfer, nothing happens.
+ * @param instance
+ */
+void rh_interrupt(rh_t *instance) {
+	if (!instance->unfinished_interrupt_transfer) {
+		return;
+	}
+	usb_log_debug("Finalizing interrupt transfer\n");
+	create_interrupt_mask_in_instance(instance);
+	process_interrupt_mask_in_instance(instance,
+	    instance->unfinished_interrupt_transfer);
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * Create hub descriptor used in hub-driver <-> hub communication
+ *
+ * This means creating byt array from data in root hub registers. For more
+ * info see usb hub specification.
+ *
+ * @param instance root hub instance
+ * @return error code
+ */
+static int create_serialized_hub_descriptor(rh_t *instance) {
+	size_t size = 7 +
+	    ((instance->port_count + 7) / 8) * 2;
+	size_t var_size = (instance->port_count + 7) / 8;
+	uint8_t * result = (uint8_t*) malloc(size);
+	if (!result) return ENOMEM;
+
+	bzero(result, size);
+	//size
+	result[0] = size;
+	//descriptor type
+	result[1] = USB_DESCTYPE_HUB;
+	result[2] = instance->port_count;
+	uint32_t hub_desc_reg = instance->registers->rh_desc_a;
+	result[3] =
+	    ((hub_desc_reg >> 8) % 2) +
+	    (((hub_desc_reg >> 9) % 2) << 1) +
+	    (((hub_desc_reg >> 10) % 2) << 2) +
+	    (((hub_desc_reg >> 11) % 2) << 3) +
+	    (((hub_desc_reg >> 12) % 2) << 4);
+	result[4] = 0;
+	result[5] = /*descriptor->pwr_on_2_good_time*/ 50;
+	result[6] = 50;
+
+	size_t port;
+	for (port = 1; port <= instance->port_count; ++port) {
+		uint8_t is_non_removable =
+		    instance->registers->rh_desc_b >> port % 2;
+		result[7 + port / 8] +=
+		    is_non_removable << (port % 8);
+	}
+	size_t i;
+	for (i = 0; i < var_size; ++i) {
+		result[7 + var_size + i] = 255;
+	}
+	instance->hub_descriptor = result;
+	instance->descriptor_size = size;
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/** initialize hub descriptors
+ *
+ * Initialized are device and full configuration descriptor. These need to
+ * be initialized only once per hub.
+ * @instance root hub instance
+ * @return error code
+ */
+static int rh_init_descriptors(rh_t *instance) {
+	memcpy(&instance->descriptors.device, &ohci_rh_device_descriptor,
+	    sizeof (ohci_rh_device_descriptor)
+	    );
+	usb_standard_configuration_descriptor_t descriptor;
+	memcpy(&descriptor, &ohci_rh_conf_descriptor,
+	    sizeof (ohci_rh_conf_descriptor));
+
+	int opResult = create_serialized_hub_descriptor(instance);
+	if (opResult != EOK) {
+		return opResult;
+	}
+	descriptor.total_length =
+	    sizeof (usb_standard_configuration_descriptor_t) +
+	    sizeof (usb_standard_endpoint_descriptor_t) +
+	    sizeof (usb_standard_interface_descriptor_t) +
+	    instance->descriptor_size;
+
+	uint8_t * full_config_descriptor =
+	    (uint8_t*) malloc(descriptor.total_length);
+	if (!full_config_descriptor) {
+		return ENOMEM;
+	}
+	memcpy(full_config_descriptor, &descriptor, sizeof (descriptor));
+	memcpy(full_config_descriptor + sizeof (descriptor),
+	    &ohci_rh_iface_descriptor, sizeof (ohci_rh_iface_descriptor));
+	memcpy(full_config_descriptor + sizeof (descriptor) +
+	    sizeof (ohci_rh_iface_descriptor),
+	    &ohci_rh_ep_descriptor, sizeof (ohci_rh_ep_descriptor));
+	memcpy(full_config_descriptor + sizeof (descriptor) +
+	    sizeof (ohci_rh_iface_descriptor) +
+	    sizeof (ohci_rh_ep_descriptor),
+	    instance->hub_descriptor, instance->descriptor_size);
+
+	instance->descriptors.configuration = full_config_descriptor;
+	instance->descriptors.configuration_size = descriptor.total_length;
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * create answer to port status_request
+ *
+ * Copy content of corresponding port status register to answer buffer. The
+ * format of the port status register and port status data is the same (
+ * see OHCI root hub and USB hub documentation).
+ *
+ * @param instance root hub instance
+ * @param port port number, counted from 1
+ * @param request structure containing both request and response information
+ * @return error code
+ */
+static int process_get_port_status_request(rh_t *instance, uint16_t port,
+    usb_transfer_batch_t * request) {
+	if (port < 1 || port > instance->port_count)
+		return EINVAL;
+	request->transfered_size = 4;
+	uint32_t data = instance->registers->rh_port_status[port - 1];
+	memcpy(request->data_buffer, &data, 4);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * create answer to port status_request
+ *
+ * This copies flags in hub status register into the buffer. The format of the
+ * status register and status message is the same, according to USB hub
+ * specification and OHCI root hub specification.
+ *
+ * @param instance root hub instance
+ * @param request structure containing both request and response information
+ * @return error code
+ */
+static int process_get_hub_status_request(rh_t *instance,
+    usb_transfer_batch_t * request) {
+	request->transfered_size = 4;
+	//bits, 0,1,16,17
+	uint32_t mask = 1 | (1 << 1) | (1 << 16) | (1 << 17);
+	uint32_t data = mask & instance->registers->rh_status;
+	memcpy(request->data_buffer, &data, 4);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * create answer to status request
+ *
+ * This might be either hub status or port status request. If neither,
+ * ENOTSUP is returned.
+ * @param instance root hub instance
+ * @param request structure containing both request and response information
+ * @return error code
+ */
+static int process_get_status_request(rh_t *instance,
+    usb_transfer_batch_t * request) {
+	size_t buffer_size = request->buffer_size;
+	usb_device_request_setup_packet_t * request_packet =
+	    (usb_device_request_setup_packet_t*)
+	    request->setup_buffer;
+
+	usb_hub_bm_request_type_t request_type = request_packet->request_type;
+	if (buffer_size < 4) {
+		usb_log_warning("Requested more data than buffer size\n");
+		return EINVAL;
+	}
+
+	if (request_type == USB_HUB_REQ_TYPE_GET_HUB_STATUS)
+		return process_get_hub_status_request(instance, request);
+	if (request_type == USB_HUB_REQ_TYPE_GET_PORT_STATUS)
+		return process_get_port_status_request(instance,
+	    request_packet->index,
+	    request);
+
+	return ENOTSUP;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * create answer to status interrupt consisting of change bitmap
+ *
+ * Result contains bitmap where bit 0 indicates change on hub and
+ * bit i indicates change on i`th port (i>0). For more info see
+ * Hub and Port status bitmap specification in USB specification
+ * (chapter 11.13.4).
+ * Uses instance`s interrupt buffer to store the interrupt information.
+ * @param instance root hub instance
+ */
+static void create_interrupt_mask_in_instance(rh_t * instance) {
+	uint8_t * bitmap = (uint8_t*) (instance->interrupt_buffer);
+	uint32_t mask = (1 << (USB_HUB_FEATURE_C_HUB_LOCAL_POWER + 16))
+	    | (1 << (USB_HUB_FEATURE_C_HUB_OVER_CURRENT + 16));
+	bzero(bitmap, instance->interrupt_mask_size);
+	if ((instance->registers->rh_status & mask) != 0) {
+		bitmap[0] = 1;
+	}
+	size_t port;
+	mask = port_status_change_mask;
+	for (port = 1; port <= instance->port_count; ++port) {
+		if ((mask & instance->registers->rh_port_status[port - 1]) != 0) {
+
+			bitmap[(port) / 8] += 1 << (port % 8);
+		}
+	}
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * create answer to a descriptor request
+ *
+ * This might be a request for standard (configuration, device, endpoint or
+ * interface) or device specific (hub) descriptor.
+ * @param instance root hub instance
+ * @param request structure containing both request and response information
+ * @return error code
+ */
+static int process_get_descriptor_request(rh_t *instance,
+    usb_transfer_batch_t *request) {
+	usb_device_request_setup_packet_t * setup_request =
+	    (usb_device_request_setup_packet_t*) request->setup_buffer;
+	size_t size;
+	const void * result_descriptor = NULL;
+	const uint16_t setup_request_value = setup_request->value_high;
+	//(setup_request->value_low << 8);
+	switch (setup_request_value) {
+		case USB_DESCTYPE_HUB:
+		{
+			usb_log_debug("USB_DESCTYPE_HUB\n");
+			result_descriptor = instance->hub_descriptor;
+			size = instance->descriptor_size;
+			break;
+		}
+		case USB_DESCTYPE_DEVICE:
+		{
+			usb_log_debug("USB_DESCTYPE_DEVICE\n");
+			result_descriptor = &ohci_rh_device_descriptor;
+			size = sizeof (ohci_rh_device_descriptor);
+			break;
+		}
+		case USB_DESCTYPE_CONFIGURATION:
+		{
+			usb_log_debug("USB_DESCTYPE_CONFIGURATION\n");
+			result_descriptor = instance->descriptors.configuration;
+			size = instance->descriptors.configuration_size;
+			break;
+		}
+		case USB_DESCTYPE_INTERFACE:
+		{
+			usb_log_debug("USB_DESCTYPE_INTERFACE\n");
+			result_descriptor = &ohci_rh_iface_descriptor;
+			size = sizeof (ohci_rh_iface_descriptor);
+			break;
+		}
+		case USB_DESCTYPE_ENDPOINT:
+		{
+			usb_log_debug("USB_DESCTYPE_ENDPOINT\n");
+			result_descriptor = &ohci_rh_ep_descriptor;
+			size = sizeof (ohci_rh_ep_descriptor);
+			break;
+		}
+		default:
+		{
+			usb_log_debug("USB_DESCTYPE_EINVAL %d \n",
+			    setup_request->value);
+			usb_log_debug("\ttype %d\n\trequest %d\n\tvalue "
+			    "%d\n\tindex %d\n\tlen %d\n ",
+			    setup_request->request_type,
+			    setup_request->request,
+			    setup_request_value,
+			    setup_request->index,
+			    setup_request->length
+			    );
+			return EINVAL;
+		}
+	}
+	if (request->buffer_size < size) {
+		size = request->buffer_size;
+	}
+	request->transfered_size = size;
+	memcpy(request->data_buffer, result_descriptor, size);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * answer to get configuration request
+ *
+ * Root hub works independently on the configuration.
+ * @param instance root hub instance
+ * @param request structure containing both request and response information
+ * @return error code
+ */
+static int process_get_configuration_request(rh_t *instance,
+    usb_transfer_batch_t *request) {
+	//set and get configuration requests do not have any meaning, only dummy
+	//values are returned
+	if (request->buffer_size != 1)
+		return EINVAL;
+	request->data_buffer[0] = 1;
+	request->transfered_size = 1;
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process feature-enabling request on hub
+ *
+ * @param instance root hub instance
+ * @param feature feature selector
+ * @return error code
+ */
+static int process_hub_feature_set_request(rh_t *instance,
+    uint16_t feature) {
+	if (!((1 << feature) & hub_set_feature_valid_mask))
+		return EINVAL;
+	if (feature == USB_HUB_FEATURE_C_HUB_LOCAL_POWER)
+		feature = USB_HUB_FEATURE_C_HUB_LOCAL_POWER << 16;
+	instance->registers->rh_status =
+	    (instance->registers->rh_status | (1 << feature))
+	    & (~hub_clear_feature_by_writing_one_mask);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process feature-disabling request on hub
+ *
+ * @param instance root hub instance
+ * @param feature feature selector
+ * @return error code
+ */
+static int process_hub_feature_clear_request(rh_t *instance,
+    uint16_t feature) {
+	if (!((1 << feature) & hub_clear_feature_valid_mask))
+		return EINVAL;
+	//is the feature cleared directly?
+	if ((1 << feature) & hub_set_feature_direct_mask) {
+		instance->registers->rh_status =
+		    (instance->registers->rh_status & (~(1 << feature)))
+		    & (~hub_clear_feature_by_writing_one_mask);
+	} else {//the feature is cleared by writing '1'
+
+		instance->registers->rh_status =
+		    (instance->registers->rh_status
+		    & (~hub_clear_feature_by_writing_one_mask))
+		    | (1 << feature);
+	}
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process feature-enabling request on hub
+ *
+ * @param instance root hub instance
+ * @param feature feature selector
+ * @param port port number, counted from 1
+ * @param enable enable or disable the specified feature
+ * @return error code
+ */
+static int process_port_feature_set_request(rh_t *instance,
+    uint16_t feature, uint16_t port) {
+	if (!((1 << feature) & port_set_feature_valid_mask))
+		return EINVAL;
+	if (port < 1 || port > instance->port_count)
+		return EINVAL;
+	instance->registers->rh_port_status[port - 1] =
+	    (instance->registers->rh_port_status[port - 1] | (1 << feature))
+	    & (~port_clear_feature_valid_mask);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process feature-disabling request on hub
+ *
+ * @param instance root hub instance
+ * @param feature feature selector
+ * @param port port number, counted from 1
+ * @param enable enable or disable the specified feature
+ * @return error code
+ */
+static int process_port_feature_clear_request(rh_t *instance,
+    uint16_t feature, uint16_t port) {
+	if (!((1 << feature) & port_clear_feature_valid_mask))
+		return EINVAL;
+	if (port < 1 || port > instance->port_count)
+		return EINVAL;
+	if (feature == USB_HUB_FEATURE_PORT_POWER)
+		feature = USB_HUB_FEATURE_PORT_LOW_SPEED;
+	if (feature == USB_HUB_FEATURE_PORT_SUSPEND)
+		feature = USB_HUB_FEATURE_PORT_OVER_CURRENT;
+	instance->registers->rh_port_status[port - 1] =
+	    (instance->registers->rh_port_status[port - 1]
+	    & (~port_clear_feature_valid_mask))
+	    | (1 << feature);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * register address to this device
+ *
+ * @param instance root hub instance
+ * @param address new address
+ * @return error code
+ */
+static int process_address_set_request(rh_t *instance,
+    uint16_t address) {
+	return ENOTSUP;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process one of requests that requere output data
+ *
+ * Request can be one of USB_DEVREQ_GET_STATUS, USB_DEVREQ_GET_DESCRIPTOR or
+ * USB_DEVREQ_GET_CONFIGURATION.
+ * @param instance root hub instance
+ * @param request structure containing both request and response information
+ * @return error code
+ */
+static int process_request_with_output(rh_t *instance,
+    usb_transfer_batch_t *request) {
+	usb_device_request_setup_packet_t * setup_request =
+	    (usb_device_request_setup_packet_t*) request->setup_buffer;
+	if (setup_request->request == USB_DEVREQ_GET_STATUS) {
+		usb_log_debug("USB_DEVREQ_GET_STATUS\n");
+		return process_get_status_request(instance, request);
+	}
+	if (setup_request->request == USB_DEVREQ_GET_DESCRIPTOR) {
+		usb_log_debug("USB_DEVREQ_GET_DESCRIPTOR\n");
+		return process_get_descriptor_request(instance, request);
+	}
+	if (setup_request->request == USB_DEVREQ_GET_CONFIGURATION) {
+		usb_log_debug("USB_DEVREQ_GET_CONFIGURATION\n");
+
+		return process_get_configuration_request(instance, request);
+	}
+	return ENOTSUP;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process one of requests that carry input data
+ *
+ * Request can be one of USB_DEVREQ_SET_DESCRIPTOR or
+ * USB_DEVREQ_SET_CONFIGURATION.
+ * @param instance root hub instance
+ * @param request structure containing both request and response information
+ * @return error code
+ */
+static int process_request_with_input(rh_t *instance,
+    usb_transfer_batch_t *request) {
+	usb_device_request_setup_packet_t * setup_request =
+	    (usb_device_request_setup_packet_t*) request->setup_buffer;
+	request->transfered_size = 0;
+	if (setup_request->request == USB_DEVREQ_SET_DESCRIPTOR) {
+		return ENOTSUP;
+	}
+	if (setup_request->request == USB_DEVREQ_SET_CONFIGURATION) {
+		//set and get configuration requests do not have any meaning,
+		//only dummy values are returned
+
+		return EOK;
+	}
+	return ENOTSUP;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process one of requests that do not request nor carry additional data
+ *
+ * Request can be one of USB_DEVREQ_CLEAR_FEATURE, USB_DEVREQ_SET_FEATURE or
+ * USB_DEVREQ_SET_ADDRESS.
+ * @param instance root hub instance
+ * @param request structure containing both request and response information
+ * @return error code
+ */
+static int process_request_without_data(rh_t *instance,
+    usb_transfer_batch_t *request) {
+	usb_device_request_setup_packet_t * setup_request =
+	    (usb_device_request_setup_packet_t*) request->setup_buffer;
+	request->transfered_size = 0;
+	if (setup_request->request == USB_DEVREQ_CLEAR_FEATURE) {
+		if (setup_request->request_type == USB_HUB_REQ_TYPE_SET_HUB_FEATURE) {
+			usb_log_debug("USB_HUB_REQ_TYPE_SET_HUB_FEATURE\n");
+			return process_hub_feature_clear_request(instance,
+			    setup_request->value);
+		}
+		if (setup_request->request_type == USB_HUB_REQ_TYPE_SET_PORT_FEATURE) {
+			usb_log_debug("USB_HUB_REQ_TYPE_SET_PORT_FEATURE\n");
+			return process_port_feature_clear_request(instance,
+			    setup_request->value,
+			    setup_request->index);
+		}
+		usb_log_debug("USB_HUB_REQ_TYPE_INVALID %d\n",
+		    setup_request->request_type);
+		return EINVAL;
+	}
+	if (setup_request->request == USB_DEVREQ_SET_FEATURE) {
+		if (setup_request->request_type == USB_HUB_REQ_TYPE_SET_HUB_FEATURE) {
+			usb_log_debug("USB_HUB_REQ_TYPE_SET_HUB_FEATURE\n");
+			return process_hub_feature_set_request(instance,
+			    setup_request->value);
+		}
+		if (setup_request->request_type == USB_HUB_REQ_TYPE_SET_PORT_FEATURE) {
+			usb_log_debug("USB_HUB_REQ_TYPE_SET_PORT_FEATURE\n");
+			return process_port_feature_set_request(instance,
+			    setup_request->value,
+			    setup_request->index);
+		}
+		usb_log_debug("USB_HUB_REQ_TYPE_INVALID %d\n",
+		    setup_request->request_type);
+		return EINVAL;
+	}
+	if (setup_request->request == USB_DEVREQ_SET_ADDRESS) {
+		usb_log_debug("USB_DEVREQ_SET_ADDRESS\n");
+		return process_address_set_request(instance,
+		    setup_request->value);
+	}
+	usb_log_debug("USB_DEVREQ_SET_ENOTSUP %d\n",
+	    setup_request->request_type);
+
+	return ENOTSUP;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process hub control request
+ *
+ * If needed, writes answer into the request structure.
+ * Request can be one of
+ * USB_DEVREQ_GET_STATUS,
+ * USB_DEVREQ_GET_DESCRIPTOR,
+ * USB_DEVREQ_GET_CONFIGURATION,
+ * USB_DEVREQ_CLEAR_FEATURE,
+ * USB_DEVREQ_SET_FEATURE,
+ * USB_DEVREQ_SET_ADDRESS,
+ * USB_DEVREQ_SET_DESCRIPTOR or
+ * USB_DEVREQ_SET_CONFIGURATION.
+ *
+ * @param instance root hub instance
+ * @param request structure containing both request and response information
+ * @return error code
+ */
+static int process_ctrl_request(rh_t *instance, usb_transfer_batch_t *request) {
+	if (!request->setup_buffer) {
+		usb_log_error("root hub received empty transaction?");
+		return EINVAL;
+	}
+	int opResult;
+	if (sizeof (usb_device_request_setup_packet_t) > request->setup_size) {
+		usb_log_error("Setup packet too small\n");
+		return EINVAL;
+	}
+	usb_log_info("CTRL packet: %s.\n",
+	    usb_debug_str_buffer(
+	    (const uint8_t *) request->setup_buffer, 8, 8));
+	usb_device_request_setup_packet_t * setup_request =
+	    (usb_device_request_setup_packet_t*)
+	    request->setup_buffer;
+	switch (setup_request->request) {
+		case USB_DEVREQ_GET_STATUS:
+		case USB_DEVREQ_GET_DESCRIPTOR:
+		case USB_DEVREQ_GET_CONFIGURATION:
+			usb_log_debug("Processing request with output\n");
+			opResult = process_request_with_output(
+			    instance, request);
+			break;
+		case USB_DEVREQ_CLEAR_FEATURE:
+		case USB_DEVREQ_SET_FEATURE:
+		case USB_DEVREQ_SET_ADDRESS:
+			usb_log_debug("Processing request without "
+			    "additional data\n");
+			opResult = process_request_without_data(
+			    instance, request);
+			break;
+		case USB_DEVREQ_SET_DESCRIPTOR:
+		case USB_DEVREQ_SET_CONFIGURATION:
+			usb_log_debug("Processing request with "
+			    "input\n");
+			opResult = process_request_with_input(
+			    instance, request);
+
+			break;
+		default:
+			usb_log_warning("Received unsuported request: "
+			    "%d\n",
+			    setup_request->request
+			    );
+			opResult = ENOTSUP;
+	}
+	return opResult;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * process hanging interrupt request
+ *
+ * If an interrupt transfer has been received and there was no change,
+ * the driver stores the transfer information and waits for change to occcur.
+ * This routine is called when that happens and it finalizes the interrupt
+ * transfer.
+ *
+ * @param instance hub instance
+ * @param request batch request to be processed
+ *
+ * @return
+ */
+static int process_interrupt_mask_in_instance(rh_t *instance,
+    usb_transfer_batch_t * request) {
+	memcpy(request->data_buffer, instance->interrupt_buffer,
+	    instance->interrupt_mask_size);
+	request->transfered_size = instance->interrupt_mask_size;
+	instance->unfinished_interrupt_transfer = NULL;
+	usb_transfer_batch_finish_error(request, EOK);
+
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * return whether the buffer is full of zeros
+ *
+ * Convenience function.
+ * @param buffer
+ * @param size
+ * @return
+ */
+static bool is_zeros(void *buffer, size_t size) {
+	if (!buffer) return true;
+	if (!size) return true;
+	size_t i;
+	for (i = 0; i < size; ++i) {
+		if (((char*) buffer)[i])
+			return false;
+	}
+	return true;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/ohci/root_hub.h
===================================================================
--- uspace/drv/ohci/root_hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/root_hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#ifndef DRV_OHCI_ROOT_HUB_H
+#define DRV_OHCI_ROOT_HUB_H
+
+#include <usb/usb.h>
+#include <usb/dev/driver.h>
+
+#include "ohci_regs.h"
+#include "batch.h"
+
+/**
+ * ohci root hub representation
+ */
+typedef struct rh {
+	/** pointer to ohci driver registers */
+	ohci_regs_t *registers;
+	/** usb address of the root hub */
+	usb_address_t address;
+	/** hub port count */
+	size_t port_count;
+	/** hubs descriptors */
+	usb_device_descriptors_t descriptors;
+	/** interrupt transfer waiting for an actual interrupt to occur */
+	usb_transfer_batch_t * unfinished_interrupt_transfer;
+	/** pre-allocated interrupt mask
+	 *
+	 * This is allocated when initializing instance, so that memory
+	 * allocation is not needed when processing request. Buffer is used for
+	 * interrupt bitmask.
+	 */
+	uint8_t * interrupt_buffer;
+	/** size of interrupt buffer */
+	size_t interrupt_mask_size;
+	/** instance`s descriptor*/
+	uint8_t * hub_descriptor;
+	/** size of hub descriptor */
+	size_t descriptor_size;
+
+
+} rh_t;
+
+int rh_init(rh_t *instance, ohci_regs_t *regs);
+
+int rh_request(rh_t *instance, usb_transfer_batch_t *request);
+
+void rh_interrupt(rh_t *instance);
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/utils/malloc32.h
===================================================================
--- uspace/drv/ohci/utils/malloc32.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/ohci/utils/malloc32.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2010 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbohci
+ * @{
+ */
+/** @file
+ * @brief OHCI driver
+ */
+#ifndef DRV_OHCI_UTILS_MALLOC32_H
+#define DRV_OHCI_UTILS_MALLOC32_H
+
+#include <assert.h>
+#include <malloc.h>
+#include <errno.h>
+#include <mem.h>
+#include <as.h>
+
+/** Get physical address translation
+ *
+ * @param[in] addr Virtual address to translate
+ * @return Physical address if exists, NULL otherwise.
+ */
+static inline uintptr_t addr_to_phys(void *addr)
+{
+	uintptr_t result;
+	int ret = as_get_physical_mapping(addr, &result);
+
+	if (ret != EOK)
+		return 0;
+	return (result | ((uintptr_t)addr & 0xfff));
+}
+/*----------------------------------------------------------------------------*/
+/** Physical mallocator simulator
+ *
+ * @param[in] size Size of the required memory space
+ * @return Address of the aligned and big enough memory place, NULL on failure.
+ */
+static inline void * malloc32(size_t size)
+	{ return memalign(size, size); }
+/*----------------------------------------------------------------------------*/
+/** Physical mallocator simulator
+ *
+ * @param[in] addr Address of the place allocated by malloc32
+ */
+static inline void free32(void *addr)
+	{ if (addr) free(addr); }
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/pciintel/pci.c
===================================================================
--- uspace/drv/pciintel/pci.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/drv/pciintel/pci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -52,8 +52,13 @@
 #include <ipc/devman.h>
 #include <ipc/dev_iface.h>
+#include <ipc/irc.h>
+#include <ipc/ns.h>
+#include <ipc/services.h>
+#include <sysinfo.h>
 #include <ops/hw_res.h>
 #include <device/hw_res.h>
 #include <ddi.h>
 #include <libarch/ddi.h>
+#include <pci_dev_iface.h>
 
 #include "pci.h"
@@ -84,7 +89,92 @@
 static bool pciintel_enable_interrupt(ddf_fun_t *fnode)
 {
-	/* TODO */
-	
-	return false;
+	/* This is an old ugly way, copied from ne2000 driver */
+	assert(fnode);
+	pci_fun_t *dev_data = (pci_fun_t *) fnode->driver_data;
+
+	sysarg_t apic;
+	sysarg_t i8259;
+
+	int irc_phone = ENOTSUP;
+
+	if (((sysinfo_get_value("apic", &apic) == EOK) && (apic))
+	    || ((sysinfo_get_value("i8259", &i8259) == EOK) && (i8259))) {
+		irc_phone = service_connect_blocking(SERVICE_IRC, 0, 0);
+	}
+
+	if (irc_phone < 0) {
+		return false;
+	}
+
+	size_t i = 0;
+	hw_resource_list_t *res = &dev_data->hw_resources;
+	for (; i < res->count; i++) {
+		if (res->resources[i].type == INTERRUPT) {
+			const int irq = res->resources[i].res.interrupt.irq;
+			const int rc =
+			    async_req_1_0(irc_phone, IRC_ENABLE_INTERRUPT, irq);
+			if (rc != EOK) {
+				async_hangup(irc_phone);
+				return false;
+			}
+		}
+	}
+
+	async_hangup(irc_phone);
+	return true;
+}
+
+static int pci_config_space_write_32(
+    ddf_fun_t *fun, uint32_t address, uint32_t data)
+{
+	if (address > 252)
+		return EINVAL;
+	pci_conf_write_32(PCI_FUN(fun), address, data);
+	return EOK;
+}
+
+static int pci_config_space_write_16(
+    ddf_fun_t *fun, uint32_t address, uint16_t data)
+{
+	if (address > 254)
+		return EINVAL;
+	pci_conf_write_16(PCI_FUN(fun), address, data);
+	return EOK;
+}
+
+static int pci_config_space_write_8(
+    ddf_fun_t *fun, uint32_t address, uint8_t data)
+{
+	if (address > 255)
+		return EINVAL;
+	pci_conf_write_8(PCI_FUN(fun), address, data);
+	return EOK;
+}
+
+static int pci_config_space_read_32(
+    ddf_fun_t *fun, uint32_t address, uint32_t *data)
+{
+	if (address > 252)
+		return EINVAL;
+	*data = pci_conf_read_32(PCI_FUN(fun), address);
+	return EOK;
+}
+
+static int pci_config_space_read_16(
+    ddf_fun_t *fun, uint32_t address, uint16_t *data)
+{
+	if (address > 254)
+		return EINVAL;
+	*data = pci_conf_read_16(PCI_FUN(fun), address);
+	return EOK;
+}
+
+static int pci_config_space_read_8(
+    ddf_fun_t *fun, uint32_t address, uint8_t *data)
+{
+	if (address > 255)
+		return EINVAL;
+	*data = pci_conf_read_8(PCI_FUN(fun), address);
+	return EOK;
 }
 
@@ -94,5 +184,17 @@
 };
 
-static ddf_dev_ops_t pci_fun_ops;
+static pci_dev_iface_t pci_dev_ops = {
+	.config_space_read_8 = &pci_config_space_read_8,
+	.config_space_read_16 = &pci_config_space_read_16,
+	.config_space_read_32 = &pci_config_space_read_32,
+	.config_space_write_8 = &pci_config_space_write_8,
+	.config_space_write_16 = &pci_config_space_write_16,
+	.config_space_write_32 = &pci_config_space_write_32
+};
+
+static ddf_dev_ops_t pci_fun_ops = {
+	.interfaces[HW_RES_DEV_IFACE] = &pciintel_hw_res_ops,
+	.interfaces[PCI_DEV_IFACE] = &pci_dev_ops
+};
 
 static int pci_add_device(ddf_dev_t *);
@@ -288,9 +390,14 @@
 	/* Get the value of the BAR. */
 	val = pci_conf_read_32(fun, addr);
+
+#define IO_MASK  (~0x3)
+#define MEM_MASK (~0xf)
 	
 	io = (bool) (val & 1);
 	if (io) {
 		addrw64 = false;
+		mask = IO_MASK;
 	} else {
+		mask = MEM_MASK;
 		switch ((val >> 1) & 3) {
 		case 0:
@@ -308,5 +415,5 @@
 	/* Get the address mask. */
 	pci_conf_write_32(fun, addr, 0xffffffff);
-	mask = pci_conf_read_32(fun, addr);
+	mask &= pci_conf_read_32(fun, addr);
 	
 	/* Restore the original value. */
@@ -558,4 +665,5 @@
 	ddf_log_init(NAME, LVL_ERROR);
 	pci_fun_ops.interfaces[HW_RES_DEV_IFACE] = &pciintel_hw_res_ops;
+	pci_fun_ops.interfaces[PCI_DEV_IFACE] = &pci_dev_ops;
 }
 
@@ -629,5 +737,6 @@
 size_t pci_bar_mask_to_size(uint32_t mask)
 {
-	return ((mask & 0xfffffff0) ^ 0xffffffff) + 1;
+	size_t size = mask & ~(mask - 1);
+	return size;
 }
 
Index: uspace/drv/rootvirt/devices.def
===================================================================
--- uspace/drv/rootvirt/devices.def	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/drv/rootvirt/devices.def	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -26,2 +26,9 @@
 },
 #endif
+#ifdef CONFIG_RUN_VIRTUAL_USB_HC
+/* Virtual USB host controller. */
+{
+	.name = "usbhc",
+	.match_id = "usb&hc=vhc"
+},
+#endif
Index: uspace/drv/uhci-hcd/Makefile
===================================================================
--- uspace/drv/uhci-hcd/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,53 @@
+#
+# Copyright (c) 2010 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+
+LIBS = \
+	$(LIBUSBHOST_PREFIX)/libusbhost.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBHOST_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+BINARY = uhci-hcd
+
+SOURCES = \
+	iface.c \
+	main.c \
+	transfer_list.c \
+	uhci.c \
+	hc.c \
+	root_hub.c \
+	hw_struct/transfer_descriptor.c \
+	pci.c \
+	batch.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/uhci-hcd/batch.c
===================================================================
--- uspace/drv/uhci-hcd/batch.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/batch.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,424 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver USB transfer structure
+ */
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/usb.h>
+#include <usb/debug.h>
+
+#include "batch.h"
+#include "transfer_list.h"
+#include "hw_struct/transfer_descriptor.h"
+#include "utils/malloc32.h"
+
+#define DEFAULT_ERROR_COUNT 3
+
+/** UHCI specific data required for USB transfer */
+typedef struct uhci_transfer_batch {
+	/** Queue head
+	 * This QH is used to maintain UHCI schedule structure and the element
+	 * pointer points to the first TD of this batch.
+	 */
+	qh_t *qh;
+	/** List of TDs needed for the transfer */
+	td_t *tds;
+	/** Number of TDs used by the transfer */
+	size_t td_count;
+	/** Data buffer, must be accessible by the UHCI hw */
+	void *device_buffer;
+} uhci_transfer_batch_t;
+/*----------------------------------------------------------------------------*/
+static void batch_control(usb_transfer_batch_t *instance,
+    usb_packet_id data_stage, usb_packet_id status_stage);
+static void batch_data(usb_transfer_batch_t *instance, usb_packet_id pid);
+/*----------------------------------------------------------------------------*/
+/** Safely destructs uhci_transfer_batch_t structure
+ *
+ * @param[in] uhci_batch Instance to destroy.
+ */
+static void uhci_transfer_batch_dispose(void *uhci_batch)
+{
+	uhci_transfer_batch_t *instance = uhci_batch;
+	assert(instance);
+	free32(instance->device_buffer);
+	free(instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Allocate memory and initialize internal data structure.
+ *
+ * @param[in] fun DDF function to pass to callback.
+ * @param[in] ep Communication target
+ * @param[in] buffer Data source/destination.
+ * @param[in] buffer_size Size of the buffer.
+ * @param[in] setup_buffer Setup data source (if not NULL)
+ * @param[in] setup_size Size of setup_buffer (should be always 8)
+ * @param[in] func_in function to call on inbound transfer completion
+ * @param[in] func_out function to call on outbound transfer completion
+ * @param[in] arg additional parameter to func_in or func_out
+ * @return Valid pointer if all structures were successfully created,
+ * NULL otherwise.
+ *
+ * Determines the number of needed transfer descriptors (TDs).
+ * Prepares a transport buffer (that is accessible by the hardware).
+ * Initializes parameters needed for the transfer and callback.
+ */
+usb_transfer_batch_t * batch_get(ddf_fun_t *fun, endpoint_t *ep,
+    char *buffer, size_t buffer_size,
+    const char* setup_buffer, size_t setup_size,
+    usbhc_iface_transfer_in_callback_t func_in,
+    usbhc_iface_transfer_out_callback_t func_out, void *arg)
+{
+	assert(ep);
+	assert(func_in == NULL || func_out == NULL);
+	assert(func_in != NULL || func_out != NULL);
+
+#define CHECK_NULL_DISPOSE_RETURN(ptr, message...) \
+	if (ptr == NULL) { \
+		usb_log_error(message); \
+		if (uhci_data) { \
+			uhci_transfer_batch_dispose(uhci_data); \
+		} \
+		return NULL; \
+	} else (void)0
+
+	uhci_transfer_batch_t *uhci_data =
+	    malloc(sizeof(uhci_transfer_batch_t));
+	CHECK_NULL_DISPOSE_RETURN(uhci_data,
+	    "Failed to allocate UHCI batch.\n");
+	bzero(uhci_data, sizeof(uhci_transfer_batch_t));
+
+	uhci_data->td_count =
+	    (buffer_size + ep->max_packet_size - 1) / ep->max_packet_size;
+	if (ep->transfer_type == USB_TRANSFER_CONTROL) {
+		uhci_data->td_count += 2;
+	}
+
+	assert((sizeof(td_t) % 16) == 0);
+	const size_t total_size = (sizeof(td_t) * uhci_data->td_count)
+	    + sizeof(qh_t) + setup_size + buffer_size;
+	uhci_data->device_buffer = malloc32(total_size);
+	CHECK_NULL_DISPOSE_RETURN(uhci_data->device_buffer,
+	    "Failed to allocate UHCI buffer.\n");
+	bzero(uhci_data->device_buffer, total_size);
+
+	uhci_data->tds = uhci_data->device_buffer;
+	uhci_data->qh =
+	    (uhci_data->device_buffer + (sizeof(td_t) * uhci_data->td_count));
+
+	qh_init(uhci_data->qh);
+	qh_set_element_td(uhci_data->qh, uhci_data->tds);
+
+	usb_transfer_batch_t *instance = malloc(sizeof(usb_transfer_batch_t));
+	CHECK_NULL_DISPOSE_RETURN(instance,
+	    "Failed to allocate batch instance.\n");
+	void *setup =
+	    uhci_data->device_buffer + (sizeof(td_t) * uhci_data->td_count)
+	    + sizeof(qh_t);
+	void *data_buffer = setup + setup_size;
+	usb_target_t target =
+	    { .address = ep->address, .endpoint = ep->endpoint };
+	usb_transfer_batch_init(instance, ep, buffer, data_buffer, buffer_size,
+	    setup, setup_size, func_in, func_out, arg, fun,
+	    uhci_data, uhci_transfer_batch_dispose);
+
+	memcpy(instance->setup_buffer, setup_buffer, setup_size);
+	usb_log_debug("Batch(%p) %d:%d memory structures ready.\n",
+	    instance, target.address, target.endpoint);
+	return instance;
+}
+/*----------------------------------------------------------------------------*/
+/** Check batch TDs for activity.
+ *
+ * @param[in] instance Batch structure to use.
+ * @return False, if there is an active TD, true otherwise.
+ *
+ * Walk all TDs. Stop with false if there is an active one (it is to be
+ * processed). Stop with true if an error is found. Return true if the last TD
+ * is reached.
+ */
+bool batch_is_complete(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	uhci_transfer_batch_t *data = instance->private_data;
+	assert(data);
+
+	usb_log_debug2("Batch(%p) checking %zu transfer(s) for completion.\n",
+	    instance, data->td_count);
+	instance->transfered_size = 0;
+	size_t i = 0;
+	for (;i < data->td_count; ++i) {
+		if (td_is_active(&data->tds[i])) {
+			return false;
+		}
+
+		instance->error = td_status(&data->tds[i]);
+		if (instance->error != EOK) {
+			usb_log_debug("Batch(%p) found error TD(%zu):%"
+			    PRIx32 ".\n", instance, i, data->tds[i].status);
+			td_print_status(&data->tds[i]);
+
+			assert(instance->ep != NULL);
+			endpoint_toggle_set(instance->ep,
+			    td_toggle(&data->tds[i]));
+			if (i > 0)
+				goto substract_ret;
+			return true;
+		}
+
+		instance->transfered_size += td_act_size(&data->tds[i]);
+		if (td_is_short(&data->tds[i]))
+			goto substract_ret;
+	}
+substract_ret:
+	instance->transfered_size -= instance->setup_size;
+	return true;
+}
+/*----------------------------------------------------------------------------*/
+/** Prepares control write transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Uses generic control function with pids OUT and IN.
+ */
+void batch_control_write(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	/* We are data out, we are supposed to provide data */
+	memcpy(instance->data_buffer, instance->buffer, instance->buffer_size);
+	batch_control(instance, USB_PID_OUT, USB_PID_IN);
+	instance->next_step = usb_transfer_batch_call_out_and_dispose;
+	usb_log_debug("Batch(%p) CONTROL WRITE initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepares control read transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Uses generic control with pids IN and OUT.
+ */
+void batch_control_read(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	batch_control(instance, USB_PID_IN, USB_PID_OUT);
+	instance->next_step = usb_transfer_batch_call_in_and_dispose;
+	usb_log_debug("Batch(%p) CONTROL READ initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare interrupt in transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transfer with PID_IN.
+ */
+void batch_interrupt_in(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	batch_data(instance, USB_PID_IN);
+	instance->next_step = usb_transfer_batch_call_in_and_dispose;
+	usb_log_debug("Batch(%p) INTERRUPT IN initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare interrupt out transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transfer with PID_OUT.
+ */
+void batch_interrupt_out(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	/* We are data out, we are supposed to provide data */
+	memcpy(instance->data_buffer, instance->buffer, instance->buffer_size);
+	batch_data(instance, USB_PID_OUT);
+	instance->next_step = usb_transfer_batch_call_out_and_dispose;
+	usb_log_debug("Batch(%p) INTERRUPT OUT initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare bulk in transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transfer with PID_IN.
+ */
+void batch_bulk_in(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	batch_data(instance, USB_PID_IN);
+	instance->next_step = usb_transfer_batch_call_in_and_dispose;
+	usb_log_debug("Batch(%p) BULK IN initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare bulk out transfer.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transfer with PID_OUT.
+ */
+void batch_bulk_out(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	/* We are data out, we are supposed to provide data */
+	memcpy(instance->data_buffer, instance->buffer, instance->buffer_size);
+	batch_data(instance, USB_PID_OUT);
+	instance->next_step = usb_transfer_batch_call_out_and_dispose;
+	usb_log_debug("Batch(%p) BULK OUT initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare generic data transfer
+ *
+ * @param[in] instance Batch structure to use.
+ * @param[in] pid Pid to use for data transactions.
+ *
+ * Transactions with alternating toggle bit and supplied pid value.
+ * The last transfer is marked with IOC flag.
+ */
+void batch_data(usb_transfer_batch_t *instance, usb_packet_id pid)
+{
+	assert(instance);
+	uhci_transfer_batch_t *data = instance->private_data;
+	assert(data);
+
+	const bool low_speed = instance->ep->speed == USB_SPEED_LOW;
+	int toggle = endpoint_toggle_get(instance->ep);
+	assert(toggle == 0 || toggle == 1);
+
+	size_t td = 0;
+	size_t remain_size = instance->buffer_size;
+	char *buffer = instance->data_buffer;
+	while (remain_size > 0) {
+		const size_t packet_size =
+		    (instance->ep->max_packet_size > remain_size) ?
+		    remain_size : instance->ep->max_packet_size;
+
+		td_t *next_td = (td + 1 < data->td_count)
+		    ? &data->tds[td + 1] : NULL;
+
+
+		usb_target_t target =
+		    { instance->ep->address, instance->ep->endpoint };
+
+		assert(td < data->td_count);
+		td_init(
+		    &data->tds[td], DEFAULT_ERROR_COUNT, packet_size,
+		    toggle, false, low_speed, target, pid, buffer, next_td);
+
+		++td;
+		toggle = 1 - toggle;
+		buffer += packet_size;
+		assert(packet_size <= remain_size);
+		remain_size -= packet_size;
+	}
+	td_set_ioc(&data->tds[td - 1]);
+	endpoint_toggle_set(instance->ep, toggle);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare generic control transfer
+ *
+ * @param[in] instance Batch structure to use.
+ * @param[in] data_stage Pid to use for data tds.
+ * @param[in] status_stage Pid to use for data tds.
+ *
+ * Setup stage with toggle 0 and USB_PID_SETUP.
+ * Data stage with alternating toggle and pid supplied by parameter.
+ * Status stage with toggle 1 and pid supplied by parameter.
+ * The last transfer is marked with IOC.
+ */
+void batch_control(usb_transfer_batch_t *instance,
+   usb_packet_id data_stage, usb_packet_id status_stage)
+{
+	assert(instance);
+	uhci_transfer_batch_t *data = instance->private_data;
+	assert(data);
+	assert(data->td_count >= 2);
+
+	const bool low_speed = instance->ep->speed == USB_SPEED_LOW;
+	const usb_target_t target =
+	    { instance->ep->address, instance->ep->endpoint };
+
+	/* setup stage */
+	td_init(
+	    data->tds, DEFAULT_ERROR_COUNT, instance->setup_size, 0, false,
+	    low_speed, target, USB_PID_SETUP, instance->setup_buffer,
+	    &data->tds[1]);
+
+	/* data stage */
+	size_t td = 1;
+	unsigned toggle = 1;
+	size_t remain_size = instance->buffer_size;
+	char *buffer = instance->data_buffer;
+	while (remain_size > 0) {
+		const size_t packet_size =
+		    (instance->ep->max_packet_size > remain_size) ?
+		    remain_size : instance->ep->max_packet_size;
+
+		td_init(
+		    &data->tds[td], DEFAULT_ERROR_COUNT, packet_size,
+		    toggle, false, low_speed, target, data_stage,
+		    buffer, &data->tds[td + 1]);
+
+		++td;
+		toggle = 1 - toggle;
+		buffer += packet_size;
+		assert(td < data->td_count);
+		assert(packet_size <= remain_size);
+		remain_size -= packet_size;
+	}
+
+	/* status stage */
+	assert(td == data->td_count - 1);
+
+	td_init(
+	    &data->tds[td], DEFAULT_ERROR_COUNT, 0, 1, false, low_speed,
+	    target, status_stage, NULL, NULL);
+	td_set_ioc(&data->tds[td]);
+
+	usb_log_debug2("Control last TD status: %x.\n",
+	    data->tds[td].status);
+}
+/*----------------------------------------------------------------------------*/
+/** Provides access to QH data structure.
+ *
+ * @param[in] instance Batch pointer to use.
+ * @return Pointer to the QH used by the batch.
+ */
+qh_t * batch_qh(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	uhci_transfer_batch_t *data = instance->private_data;
+	assert(data);
+	return data->qh;
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/batch.h
===================================================================
--- uspace/drv/uhci-hcd/batch.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/batch.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver USB tranfer helper functions
+ */
+#ifndef DRV_UHCI_BATCH_H
+#define DRV_UHCI_BATCH_H
+
+#include <usb/host/batch.h>
+
+#include "hw_struct/queue_head.h"
+
+usb_transfer_batch_t * batch_get(
+    ddf_fun_t *fun, endpoint_t *ep, char *buffer, size_t size,
+    const char *setup_buffer, size_t setup_size,
+    usbhc_iface_transfer_in_callback_t func_in,
+    usbhc_iface_transfer_out_callback_t func_out,
+    void *arg);
+
+void batch_dispose(usb_transfer_batch_t *instance);
+
+bool batch_is_complete(usb_transfer_batch_t *instance);
+
+void batch_control_write(usb_transfer_batch_t *instance);
+void batch_control_read(usb_transfer_batch_t *instance);
+
+void batch_interrupt_in(usb_transfer_batch_t *instance);
+void batch_interrupt_out(usb_transfer_batch_t *instance);
+
+void batch_bulk_in(usb_transfer_batch_t *instance);
+void batch_bulk_out(usb_transfer_batch_t *instance);
+
+qh_t * batch_qh(usb_transfer_batch_t *instance);
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/hc.c
===================================================================
--- uspace/drv/uhci-hcd/hc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/hc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,474 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI Host controller driver routines
+ */
+#include <errno.h>
+#include <str_error.h>
+#include <adt/list.h>
+#include <libarch/ddi.h>
+
+#include <usb/debug.h>
+#include <usb/usb.h>
+
+#include "hc.h"
+
+#define UHCI_INTR_ALLOW_INTERRUPTS \
+    (UHCI_INTR_CRC | UHCI_INTR_COMPLETE | UHCI_INTR_SHORT_PACKET)
+#define UHCI_STATUS_USED_INTERRUPTS \
+    (UHCI_STATUS_INTERRUPT | UHCI_STATUS_ERROR_INTERRUPT)
+
+
+static int hc_init_transfer_lists(hc_t *instance);
+static int hc_init_mem_structures(hc_t *instance);
+static void hc_init_hw(hc_t *instance);
+
+static int hc_interrupt_emulator(void *arg);
+static int hc_debug_checker(void *arg);
+/*----------------------------------------------------------------------------*/
+/** Initialize UHCI hc driver structure
+ *
+ * @param[in] instance Memory place to initialize.
+ * @param[in] regs Address of I/O control registers.
+ * @param[in] reg_size Size of I/O control registers.
+ * @param[in] interrupts True if hw interrupts should be used.
+ * @return Error code.
+ * @note Should be called only once on any structure.
+ *
+ * Initializes memory structures, starts up hw, and launches debugger and
+ * interrupt fibrils.
+ */
+int hc_init(hc_t *instance, void *regs, size_t reg_size, bool interrupts)
+{
+	assert(reg_size >= sizeof(regs_t));
+	int ret;
+
+#define CHECK_RET_RETURN(ret, message...) \
+	if (ret != EOK) { \
+		usb_log_error(message); \
+		return ret; \
+	} else (void) 0
+
+	instance->hw_interrupts = interrupts;
+	instance->hw_failures = 0;
+
+	/* allow access to hc control registers */
+	regs_t *io;
+	ret = pio_enable(regs, reg_size, (void **)&io);
+	CHECK_RET_RETURN(ret,
+	    "Failed(%d) to gain access to registers at %p: %s.\n",
+	    ret, io, str_error(ret));
+	instance->registers = io;
+	usb_log_debug("Device registers at %p (%zuB) accessible.\n",
+	    io, reg_size);
+
+	ret = hc_init_mem_structures(instance);
+	CHECK_RET_RETURN(ret,
+	    "Failed(%d) to initialize UHCI memory structures: %s.\n",
+	    ret, str_error(ret));
+
+	hc_init_hw(instance);
+	if (!interrupts) {
+		instance->interrupt_emulator =
+		    fibril_create(hc_interrupt_emulator, instance);
+		fibril_add_ready(instance->interrupt_emulator);
+	}
+	(void)hc_debug_checker;
+
+	return EOK;
+#undef CHECK_RET_DEST_FUN_RETURN
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize UHCI hc hw resources.
+ *
+ * @param[in] instance UHCI structure to use.
+ * For magic values see UHCI Design Guide
+ */
+void hc_init_hw(hc_t *instance)
+{
+	assert(instance);
+	regs_t *registers = instance->registers;
+
+	/* Reset everything, who knows what touched it before us */
+	pio_write_16(&registers->usbcmd, UHCI_CMD_GLOBAL_RESET);
+	async_usleep(10000); /* 10ms according to USB spec */
+	pio_write_16(&registers->usbcmd, 0);
+
+	/* Reset hc, all states and counters */
+	pio_write_16(&registers->usbcmd, UHCI_CMD_HCRESET);
+	do { async_usleep(10); }
+	while ((pio_read_16(&registers->usbcmd) & UHCI_CMD_HCRESET) != 0);
+
+	/* Set frame to exactly 1ms */
+	pio_write_8(&registers->sofmod, 64);
+
+	/* Set frame list pointer */
+	const uint32_t pa = addr_to_phys(instance->frame_list);
+	pio_write_32(&registers->flbaseadd, pa);
+
+	if (instance->hw_interrupts) {
+		/* Enable all interrupts, but resume interrupt */
+		pio_write_16(&instance->registers->usbintr,
+		    UHCI_INTR_ALLOW_INTERRUPTS);
+	}
+
+	const uint16_t status = pio_read_16(&registers->usbcmd);
+	if (status != 0)
+		usb_log_warning("Previous command value: %x.\n", status);
+
+	/* Start the hc with large(64B) packet FSBR */
+	pio_write_16(&registers->usbcmd,
+	    UHCI_CMD_RUN_STOP | UHCI_CMD_MAX_PACKET | UHCI_CMD_CONFIGURE);
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize UHCI hc memory structures.
+ *
+ * @param[in] instance UHCI structure to use.
+ * @return Error code
+ * @note Should be called only once on any structure.
+ *
+ * Structures:
+ *  - interrupt code (I/O addressses are customized per instance)
+ *  - transfer lists (queue heads need to be accessible by the hw)
+ *  - frame list page (needs to be one UHCI hw accessible 4K page)
+ */
+int hc_init_mem_structures(hc_t *instance)
+{
+	assert(instance);
+#define CHECK_RET_RETURN(ret, message...) \
+	if (ret != EOK) { \
+		usb_log_error(message); \
+		return ret; \
+	} else (void) 0
+
+	/* Init interrupt code */
+	instance->interrupt_code.cmds = instance->interrupt_commands;
+	{
+		/* Read status register */
+		instance->interrupt_commands[0].cmd = CMD_PIO_READ_16;
+		instance->interrupt_commands[0].dstarg = 1;
+		instance->interrupt_commands[0].addr =
+		    &instance->registers->usbsts;
+
+		/* Test whether we are the interrupt cause */
+		instance->interrupt_commands[1].cmd = CMD_BTEST;
+		instance->interrupt_commands[1].value =
+		    UHCI_STATUS_USED_INTERRUPTS | UHCI_STATUS_NM_INTERRUPTS;
+		instance->interrupt_commands[1].srcarg = 1;
+		instance->interrupt_commands[1].dstarg = 2;
+
+		/* Predicate cleaning and accepting */
+		instance->interrupt_commands[2].cmd = CMD_PREDICATE;
+		instance->interrupt_commands[2].value = 2;
+		instance->interrupt_commands[2].srcarg = 2;
+
+		/* Write clean status register */
+		instance->interrupt_commands[3].cmd = CMD_PIO_WRITE_A_16;
+		instance->interrupt_commands[3].srcarg = 1;
+		instance->interrupt_commands[3].addr =
+		    &instance->registers->usbsts;
+
+		/* Accept interrupt */
+		instance->interrupt_commands[4].cmd = CMD_ACCEPT;
+
+		instance->interrupt_code.cmdcount = UHCI_NEEDED_IRQ_COMMANDS;
+	}
+
+	/* Init transfer lists */
+	int ret = hc_init_transfer_lists(instance);
+	CHECK_RET_RETURN(ret, "Failed to init transfer lists.\n");
+	usb_log_debug("Initialized transfer lists.\n");
+
+	/* Init USB frame list page*/
+	instance->frame_list = get_page();
+	ret = instance->frame_list ? EOK : ENOMEM;
+	CHECK_RET_RETURN(ret, "Failed to get frame list page.\n");
+	usb_log_debug("Initialized frame list at %p.\n", instance->frame_list);
+
+	/* Set all frames to point to the first queue head */
+	const uint32_t queue = LINK_POINTER_QH(
+	        addr_to_phys(instance->transfers_interrupt.queue_head));
+
+	unsigned i = 0;
+	for(; i < UHCI_FRAME_LIST_COUNT; ++i) {
+		instance->frame_list[i] = queue;
+	}
+
+	/* Init device keeper */
+	usb_device_keeper_init(&instance->manager);
+	usb_log_debug("Initialized device manager.\n");
+
+	ret = usb_endpoint_manager_init(&instance->ep_manager,
+	    BANDWIDTH_AVAILABLE_USB11);
+	CHECK_RET_RETURN(ret, "Failed to initialize endpoint manager: %s.\n",
+	    str_error(ret));
+
+	return EOK;
+#undef CHECK_RET_RETURN
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize UHCI hc transfer lists.
+ *
+ * @param[in] instance UHCI structure to use.
+ * @return Error code
+ * @note Should be called only once on any structure.
+ *
+ * Initializes transfer lists and sets them in one chain to support proper
+ * USB scheduling. Sets pointer table for quick access.
+ */
+int hc_init_transfer_lists(hc_t *instance)
+{
+	assert(instance);
+#define SETUP_TRANSFER_LIST(type, name) \
+do { \
+	int ret = transfer_list_init(&instance->transfers_##type, name); \
+	if (ret != EOK) { \
+		usb_log_error("Failed(%d) to setup %s transfer list: %s.\n", \
+		    ret, name, str_error(ret)); \
+		transfer_list_fini(&instance->transfers_bulk_full); \
+		transfer_list_fini(&instance->transfers_control_full); \
+		transfer_list_fini(&instance->transfers_control_slow); \
+		transfer_list_fini(&instance->transfers_interrupt); \
+		return ret; \
+	} \
+} while (0)
+
+	SETUP_TRANSFER_LIST(bulk_full, "BULK FULL");
+	SETUP_TRANSFER_LIST(control_full, "CONTROL FULL");
+	SETUP_TRANSFER_LIST(control_slow, "CONTROL LOW");
+	SETUP_TRANSFER_LIST(interrupt, "INTERRUPT");
+#undef SETUP_TRANSFER_LIST
+	/* Connect lists into one schedule */
+	transfer_list_set_next(&instance->transfers_control_full,
+		&instance->transfers_bulk_full);
+	transfer_list_set_next(&instance->transfers_control_slow,
+		&instance->transfers_control_full);
+	transfer_list_set_next(&instance->transfers_interrupt,
+		&instance->transfers_control_slow);
+
+	/*FSBR, This feature is not needed (adds no benefit) and is supposedly
+	 * buggy on certain hw, enable at your own risk. */
+#ifdef FSBR
+	transfer_list_set_next(&instance->transfers_bulk_full,
+	    &instance->transfers_control_full);
+#endif
+
+	/* Assign pointers to be used during scheduling */
+	instance->transfers[USB_SPEED_FULL][USB_TRANSFER_INTERRUPT] =
+	  &instance->transfers_interrupt;
+	instance->transfers[USB_SPEED_LOW][USB_TRANSFER_INTERRUPT] =
+	  &instance->transfers_interrupt;
+	instance->transfers[USB_SPEED_FULL][USB_TRANSFER_CONTROL] =
+	  &instance->transfers_control_full;
+	instance->transfers[USB_SPEED_LOW][USB_TRANSFER_CONTROL] =
+	  &instance->transfers_control_slow;
+	instance->transfers[USB_SPEED_FULL][USB_TRANSFER_BULK] =
+	  &instance->transfers_bulk_full;
+
+	return EOK;
+#undef CHECK_RET_CLEAR_RETURN
+}
+/*----------------------------------------------------------------------------*/
+/** Schedule batch for execution.
+ *
+ * @param[in] instance UHCI structure to use.
+ * @param[in] batch Transfer batch to schedule.
+ * @return Error code
+ *
+ * Checks for bandwidth availability and appends the batch to the proper queue.
+ */
+int hc_schedule(hc_t *instance, usb_transfer_batch_t *batch)
+{
+	assert(instance);
+	assert(batch);
+
+	transfer_list_t *list =
+	    instance->transfers[batch->ep->speed][batch->ep->transfer_type];
+	assert(list);
+	transfer_list_add_batch(list, batch);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Take action based on the interrupt cause.
+ *
+ * @param[in] instance UHCI structure to use.
+ * @param[in] status Value of the status register at the time of interrupt.
+ *
+ * Interrupt might indicate:
+ * - transaction completed, either by triggering IOC, SPD, or an error
+ * - some kind of device error
+ * - resume from suspend state (not implemented)
+ */
+void hc_interrupt(hc_t *instance, uint16_t status)
+{
+	assert(instance);
+	/* Lower 2 bits are transaction error and transaction complete */
+	if (status & (UHCI_STATUS_INTERRUPT | UHCI_STATUS_ERROR_INTERRUPT)) {
+		LIST_INITIALIZE(done);
+		transfer_list_remove_finished(
+		    &instance->transfers_interrupt, &done);
+		transfer_list_remove_finished(
+		    &instance->transfers_control_slow, &done);
+		transfer_list_remove_finished(
+		    &instance->transfers_control_full, &done);
+		transfer_list_remove_finished(
+		    &instance->transfers_bulk_full, &done);
+
+		while (!list_empty(&done)) {
+			link_t *item = done.next;
+			list_remove(item);
+			usb_transfer_batch_t *batch =
+			    list_get_instance(item, usb_transfer_batch_t, link);
+			usb_transfer_batch_finish(batch);
+		}
+	}
+	/* Resume interrupts are not supported */
+	if (status & UHCI_STATUS_RESUME) {
+		usb_log_error("Resume interrupt!\n");
+	}
+
+	/* Bits 4 and 5 indicate hc error */
+	if (status & (UHCI_STATUS_PROCESS_ERROR | UHCI_STATUS_SYSTEM_ERROR)) {
+		usb_log_error("UHCI hardware failure!.\n");
+		++instance->hw_failures;
+		transfer_list_abort_all(&instance->transfers_interrupt);
+		transfer_list_abort_all(&instance->transfers_control_slow);
+		transfer_list_abort_all(&instance->transfers_control_full);
+		transfer_list_abort_all(&instance->transfers_bulk_full);
+
+		if (instance->hw_failures < UHCI_ALLOWED_HW_FAIL) {
+			/* reinitialize hw, this triggers virtual disconnect*/
+			hc_init_hw(instance);
+		} else {
+			usb_log_fatal("Too many UHCI hardware failures!.\n");
+			hc_fini(instance);
+		}
+	}
+}
+/*----------------------------------------------------------------------------*/
+/** Polling function, emulates interrupts.
+ *
+ * @param[in] arg UHCI hc structure to use.
+ * @return EOK (should never return)
+ */
+int hc_interrupt_emulator(void* arg)
+{
+	usb_log_debug("Started interrupt emulator.\n");
+	hc_t *instance = arg;
+	assert(instance);
+
+	while (1) {
+		/* Read and clear status register */
+		uint16_t status = pio_read_16(&instance->registers->usbsts);
+		pio_write_16(&instance->registers->usbsts, status);
+		if (status != 0)
+			usb_log_debug2("UHCI status: %x.\n", status);
+// Qemu fails to report stalled communication
+// see https://bugs.launchpad.net/qemu/+bug/757654
+// This is a simple workaround to force queue processing every time
+	//	status |= 1;
+		hc_interrupt(instance, status);
+		async_usleep(UHCI_INT_EMULATOR_TIMEOUT);
+	}
+	return EOK;
+}
+/*---------------------------------------------------------------------------*/
+/** Debug function, checks consistency of memory structures.
+ *
+ * @param[in] arg UHCI structure to use.
+ * @return EOK (should never return)
+ */
+int hc_debug_checker(void *arg)
+{
+	hc_t *instance = arg;
+	assert(instance);
+
+#define QH(queue) \
+	instance->transfers_##queue.queue_head
+
+	while (1) {
+		const uint16_t cmd = pio_read_16(&instance->registers->usbcmd);
+		const uint16_t sts = pio_read_16(&instance->registers->usbsts);
+		const uint16_t intr =
+		    pio_read_16(&instance->registers->usbintr);
+
+		if (((cmd & UHCI_CMD_RUN_STOP) != 1) || (sts != 0)) {
+			usb_log_debug2("Command: %X Status: %X Intr: %x\n",
+			    cmd, sts, intr);
+		}
+
+		const uintptr_t frame_list =
+		    pio_read_32(&instance->registers->flbaseadd) & ~0xfff;
+		if (frame_list != addr_to_phys(instance->frame_list)) {
+			usb_log_debug("Framelist address: %p vs. %p.\n",
+			    (void *) frame_list,
+			    (void *) addr_to_phys(instance->frame_list));
+		}
+
+		int frnum = pio_read_16(&instance->registers->frnum) & 0x3ff;
+
+		uintptr_t expected_pa = instance->frame_list[frnum]
+		    & LINK_POINTER_ADDRESS_MASK;
+		uintptr_t real_pa = addr_to_phys(QH(interrupt));
+		if (expected_pa != real_pa) {
+			usb_log_debug("Interrupt QH: %p (frame %d) vs. %p.\n",
+			    (void *) expected_pa, frnum, (void *) real_pa);
+		}
+
+		expected_pa = QH(interrupt)->next & LINK_POINTER_ADDRESS_MASK;
+		real_pa = addr_to_phys(QH(control_slow));
+		if (expected_pa != real_pa) {
+			usb_log_debug("Control Slow QH: %p vs. %p.\n",
+			    (void *) expected_pa, (void *) real_pa);
+		}
+
+		expected_pa = QH(control_slow)->next & LINK_POINTER_ADDRESS_MASK;
+		real_pa = addr_to_phys(QH(control_full));
+		if (expected_pa != real_pa) {
+			usb_log_debug("Control Full QH: %p vs. %p.\n",
+			    (void *) expected_pa, (void *) real_pa);
+		}
+
+		expected_pa = QH(control_full)->next & LINK_POINTER_ADDRESS_MASK;
+		real_pa = addr_to_phys(QH(bulk_full));
+		if (expected_pa != real_pa ) {
+			usb_log_debug("Bulk QH: %p vs. %p.\n",
+			    (void *) expected_pa, (void *) real_pa);
+		}
+		async_usleep(UHCI_DEBUGER_TIMEOUT);
+	}
+	return EOK;
+#undef QH
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/hc.h
===================================================================
--- uspace/drv/uhci-hcd/hc.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/hc.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI host controller driver structure
+ */
+#ifndef DRV_UHCI_HC_H
+#define DRV_UHCI_HC_H
+
+#include <fibril.h>
+#include <ddi.h>
+
+#include <usb/host/device_keeper.h>
+#include <usb/host/usb_endpoint_manager.h>
+#include <usb/host/batch.h>
+
+#include "transfer_list.h"
+
+/** UHCI I/O registers layout */
+typedef struct uhci_regs {
+	/** Command register, controls HC behaviour */
+	uint16_t usbcmd;
+#define UHCI_CMD_MAX_PACKET (1 << 7)
+#define UHCI_CMD_CONFIGURE  (1 << 6)
+#define UHCI_CMD_DEBUG  (1 << 5)
+#define UHCI_CMD_FORCE_GLOBAL_RESUME  (1 << 4)
+#define UHCI_CMD_FORCE_GLOBAL_SUSPEND  (1 << 3)
+#define UHCI_CMD_GLOBAL_RESET  (1 << 2)
+#define UHCI_CMD_HCRESET  (1 << 1)
+#define UHCI_CMD_RUN_STOP  (1 << 0)
+
+	/** Status register, 1 means interrupt is asserted (if enabled) */
+	uint16_t usbsts;
+#define UHCI_STATUS_HALTED (1 << 5)
+#define UHCI_STATUS_PROCESS_ERROR (1 << 4)
+#define UHCI_STATUS_SYSTEM_ERROR (1 << 3)
+#define UHCI_STATUS_RESUME (1 << 2)
+#define UHCI_STATUS_ERROR_INTERRUPT (1 << 1)
+#define UHCI_STATUS_INTERRUPT (1 << 0)
+#define UHCI_STATUS_NM_INTERRUPTS \
+    (UHCI_STATUS_PROCESS_ERROR | UHCI_STATUS_SYSTEM_ERROR)
+
+	/** Interrupt enabled registers */
+	uint16_t usbintr;
+#define UHCI_INTR_SHORT_PACKET (1 << 3)
+#define UHCI_INTR_COMPLETE (1 << 2)
+#define UHCI_INTR_RESUME (1 << 1)
+#define UHCI_INTR_CRC (1 << 0)
+
+	/** Register stores frame number used in SOF packet */
+	uint16_t frnum;
+
+	/** Pointer(physical) to the Frame List */
+	uint32_t flbaseadd;
+
+	/** SOF modification to match external timers */
+	uint8_t sofmod;
+} regs_t;
+
+#define UHCI_FRAME_LIST_COUNT 1024
+#define UHCI_INT_EMULATOR_TIMEOUT 10000
+#define UHCI_DEBUGER_TIMEOUT 5000000
+#define UHCI_ALLOWED_HW_FAIL 5
+#define UHCI_NEEDED_IRQ_COMMANDS 5
+
+/** Main UHCI driver structure */
+typedef struct hc {
+	/** USB bus driver, devices and addresses */
+	usb_device_keeper_t manager;
+	/** USB bus driver, endpoints */
+	usb_endpoint_manager_t ep_manager;
+
+	/** Addresses of I/O registers */
+	regs_t *registers;
+
+	/** Frame List contains 1024 link pointers */
+	link_pointer_t *frame_list;
+
+	/** List and queue of interrupt transfers */
+	transfer_list_t transfers_interrupt;
+	/** List and queue of low speed control transfers */
+	transfer_list_t transfers_control_slow;
+	/** List and queue of full speed bulk transfers */
+	transfer_list_t transfers_bulk_full;
+	/** List and queue of full speed control transfers */
+	transfer_list_t transfers_control_full;
+
+	/** Pointer table to the above lists, helps during scheduling */
+	transfer_list_t *transfers[2][4];
+
+	/** Code to be executed in kernel interrupt handler */
+	irq_code_t interrupt_code;
+
+	/** Commands that form interrupt code */
+	irq_cmd_t interrupt_commands[UHCI_NEEDED_IRQ_COMMANDS];
+
+	/** Fibril periodically checking status register*/
+	fid_t interrupt_emulator;
+
+	/** Indicator of hw interrupts availability */
+	bool hw_interrupts;
+
+	/** Number of hw failures detected. */
+	unsigned hw_failures;
+} hc_t;
+
+int hc_init(hc_t *instance, void *regs, size_t reg_size, bool interupts);
+
+int hc_schedule(hc_t *instance, usb_transfer_batch_t *batch);
+
+void hc_interrupt(hc_t *instance, uint16_t status);
+
+/** Safely dispose host controller internal structures
+ *
+ * @param[in] instance Host controller structure to use.
+ */
+static inline void hc_fini(hc_t *instance) { /* TODO: implement*/ };
+
+/** Get and cast pointer to the driver data
+ *
+ * @param[in] fun DDF function pointer
+ * @return cast pointer to driver_data
+ */
+static inline hc_t * fun_to_hc(ddf_fun_t *fun)
+{
+	assert(fun);
+	return fun->driver_data;
+}
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/hw_struct/link_pointer.h
===================================================================
--- uspace/drv/uhci-hcd/hw_struct/link_pointer.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/hw_struct/link_pointer.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2010 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#ifndef DRV_UHCI_HW_STRUCT_LINK_POINTER_H
+#define DRV_UHCI_HW_STRUCT_LINK_POINTER_H
+
+/* UHCI link pointer, used by many data structures */
+typedef uint32_t link_pointer_t;
+
+#define LINK_POINTER_TERMINATE_FLAG (1 << 0)
+#define LINK_POINTER_QUEUE_HEAD_FLAG (1 << 1)
+#define LINK_POINTER_ZERO_BIT_FLAG (1 << 2)
+#define LINK_POINTER_VERTICAL_FLAG (1 << 2)
+#define LINK_POINTER_RESERVED_FLAG (1 << 3)
+
+#define LINK_POINTER_ADDRESS_MASK 0xfffffff0 /* upper 28 bits */
+
+#define LINK_POINTER_QH(address) \
+	((address & LINK_POINTER_ADDRESS_MASK) | LINK_POINTER_QUEUE_HEAD_FLAG)
+
+#define LINK_POINTER_TD(address) \
+	(address & LINK_POINTER_ADDRESS_MASK)
+
+#define LINK_POINTER_TERM \
+	((link_pointer_t)LINK_POINTER_TERMINATE_FLAG)
+
+#endif
+/**
+ * @}
+ */
+
Index: uspace/drv/uhci-hcd/hw_struct/queue_head.h
===================================================================
--- uspace/drv/uhci-hcd/hw_struct/queue_head.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/hw_struct/queue_head.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2010 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#ifndef DRV_UHCI_HW_STRUCT_QH_H
+#define DRV_UHCI_HW_STRUCT_QH_H
+#include <assert.h>
+
+#include "link_pointer.h"
+#include "transfer_descriptor.h"
+#include "../utils/malloc32.h"
+
+/** This structure is defined in UHCI design guide p. 31 */
+typedef struct queue_head {
+	/** Pointer to the next entity (another QH or TD */
+	volatile link_pointer_t next;
+	/** Pointer to the contained entities (execution controlled by vertical flag*/
+	volatile link_pointer_t element;
+} __attribute__((packed)) qh_t;
+/*----------------------------------------------------------------------------*/
+/** Initialize queue head structure
+ *
+ * @param[in] instance qh_t structure to initialize.
+ *
+ * Sets both pointer to terminal NULL.
+ */
+static inline void qh_init(qh_t *instance)
+{
+	assert(instance);
+
+	instance->element = 0 | LINK_POINTER_TERMINATE_FLAG;
+	instance->next = 0 | LINK_POINTER_TERMINATE_FLAG;
+}
+/*----------------------------------------------------------------------------*/
+/** Set queue head next pointer
+ *
+ * @param[in] instance qh_t structure to use.
+ * @param[in] next Address of the next queue.
+ *
+ * Adds proper flag. If the pointer is NULL, sets next to terminal NULL.
+ */
+static inline void qh_set_next_qh(qh_t *instance, qh_t *next)
+{
+	uint32_t pa = addr_to_phys(next);
+	if (pa) {
+		instance->next = LINK_POINTER_QH(pa);
+	} else {
+		instance->next = LINK_POINTER_TERM;
+	}
+}
+/*----------------------------------------------------------------------------*/
+/** Set queue head element pointer
+ *
+ * @param[in] instance qh_t structure to use.
+ * @param[in] td Transfer descriptor to set as the first element.
+ *
+ * Adds proper flag. If the pointer is NULL, sets element to terminal NULL.
+ */
+static inline void qh_set_element_td(qh_t *instance, td_t *td)
+{
+	uint32_t pa = addr_to_phys(td);
+	if (pa) {
+		instance->element = LINK_POINTER_TD(pa);
+	} else {
+		instance->element = LINK_POINTER_TERM;
+	}
+}
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/hw_struct/transfer_descriptor.c
===================================================================
--- uspace/drv/uhci-hcd/hw_struct/transfer_descriptor.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/hw_struct/transfer_descriptor.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,176 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#include <errno.h>
+#include <usb/debug.h>
+
+#include "transfer_descriptor.h"
+#include "../utils/malloc32.h"
+
+/** Initialize Transfer Descriptor
+ *
+ * @param[in] instance Memory place to initialize.
+ * @param[in] err_count Number of retries hc should attempt.
+ * @param[in] size Size of data source.
+ * @param[in] toggle Value of toggle bit.
+ * @param[in] iso True if TD represents Isochronous transfer.
+ * @param[in] low_speed Target device's speed.
+ * @param[in] target Address and endpoint receiving the transfer.
+ * @param[in] pid Packet identification (SETUP, IN or OUT).
+ * @param[in] buffer Source of data.
+ * @param[in] next Net TD in transaction.
+ * @return Error code.
+ *
+ * Uses a mix of supplied and default values.
+ * Implicit values:
+ *  - all TDs have vertical flag set (makes transfers to endpoints atomic)
+ *  - in the error field only active it is set
+ *  - if the packet uses PID_IN and is not isochronous SPD is set
+ *
+ * Dumps 8 bytes of buffer if PID_SETUP is used.
+ */
+void td_init(td_t *instance, int err_count, size_t size, bool toggle, bool iso,
+    bool low_speed, usb_target_t target, usb_packet_id pid, void *buffer,
+    td_t *next)
+{
+	assert(instance);
+	assert(size < 1024);
+	assert((pid == USB_PID_SETUP) || (pid == USB_PID_IN)
+	    || (pid == USB_PID_OUT));
+
+	const uint32_t next_pa = addr_to_phys(next);
+	assert((next_pa & LINK_POINTER_ADDRESS_MASK) == next_pa);
+
+	instance->next = 0
+	    | LINK_POINTER_VERTICAL_FLAG
+	    | (next_pa ? next_pa : LINK_POINTER_TERMINATE_FLAG);
+
+	instance->status = 0
+	    | ((err_count & TD_STATUS_ERROR_COUNT_MASK)
+	        << TD_STATUS_ERROR_COUNT_POS)
+	    | (low_speed ? TD_STATUS_LOW_SPEED_FLAG : 0)
+	    | (iso ? TD_STATUS_ISOCHRONOUS_FLAG : 0)
+	    | TD_STATUS_ERROR_ACTIVE;
+
+	if (pid == USB_PID_IN && !iso) {
+		instance->status |= TD_STATUS_SPD_FLAG;
+	}
+
+	instance->device = 0
+	    | (((size - 1) & TD_DEVICE_MAXLEN_MASK) << TD_DEVICE_MAXLEN_POS)
+	    | (toggle ? TD_DEVICE_DATA_TOGGLE_ONE_FLAG : 0)
+	    | ((target.address & TD_DEVICE_ADDRESS_MASK)
+	        << TD_DEVICE_ADDRESS_POS)
+	    | ((target.endpoint & TD_DEVICE_ENDPOINT_MASK)
+	        << TD_DEVICE_ENDPOINT_POS)
+	    | ((pid & TD_DEVICE_PID_MASK) << TD_DEVICE_PID_POS);
+
+	instance->buffer_ptr = addr_to_phys(buffer);
+
+	usb_log_debug2("Created TD(%p): %X:%X:%X:%X(%p).\n",
+	    instance, instance->next, instance->status, instance->device,
+	    instance->buffer_ptr, buffer);
+	td_print_status(instance);
+	if (pid == USB_PID_SETUP) {
+		usb_log_debug("SETUP BUFFER: %s\n",
+		    usb_debug_str_buffer(buffer, 8, 8));
+	}
+}
+/*----------------------------------------------------------------------------*/
+/** Convert TD status into standard error code
+ *
+ * @param[in] instance TD structure to use.
+ * @return Error code.
+ */
+int td_status(td_t *instance)
+{
+	assert(instance);
+
+	/* This is hc internal error it should never be reported. */
+	if ((instance->status & TD_STATUS_ERROR_BIT_STUFF) != 0)
+		return EAGAIN;
+
+	/* CRC or timeout error, like device not present or bad data,
+	 * it won't be reported unless err count reached zero */
+	if ((instance->status & TD_STATUS_ERROR_CRC) != 0)
+		return EBADCHECKSUM;
+
+	/* HC does not end transactions on these, it should never be reported */
+	if ((instance->status & TD_STATUS_ERROR_NAK) != 0)
+		return EAGAIN;
+
+	/* Buffer overrun or underrun */
+	if ((instance->status & TD_STATUS_ERROR_BUFFER) != 0)
+		return ERANGE;
+
+	/* Device babble is something serious */
+	if ((instance->status & TD_STATUS_ERROR_BABBLE) != 0)
+		return EIO;
+
+	/* Stall might represent err count reaching zero or stall response from
+	 * the device. If err count reached zero, one of the above is reported*/
+	if ((instance->status & TD_STATUS_ERROR_STALLED) != 0)
+		return ESTALL;
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Print values in status field (dw1) in a human readable way.
+ *
+ * @param[in] instance TD structure to use.
+ */
+void td_print_status(td_t *instance)
+{
+	assert(instance);
+	const uint32_t s = instance->status;
+	usb_log_debug2("TD(%p) status(%#" PRIx32 "):%s %d,%s%s%s%s%s%s%s%s%s%s%s %zu.\n",
+	    instance, instance->status,
+	    (s & TD_STATUS_SPD_FLAG) ? " SPD," : "",
+	    (s >> TD_STATUS_ERROR_COUNT_POS) & TD_STATUS_ERROR_COUNT_MASK,
+	    (s & TD_STATUS_LOW_SPEED_FLAG) ? " LOW SPEED," : "",
+	    (s & TD_STATUS_ISOCHRONOUS_FLAG) ? " ISOCHRONOUS," : "",
+	    (s & TD_STATUS_IOC_FLAG) ? " IOC," : "",
+	    (s & TD_STATUS_ERROR_ACTIVE) ? " ACTIVE," : "",
+	    (s & TD_STATUS_ERROR_STALLED) ? " STALLED," : "",
+	    (s & TD_STATUS_ERROR_BUFFER) ? " BUFFER," : "",
+	    (s & TD_STATUS_ERROR_BABBLE) ? " BABBLE," : "",
+	    (s & TD_STATUS_ERROR_NAK) ? " NAK," : "",
+	    (s & TD_STATUS_ERROR_CRC) ? " CRC/TIMEOUT," : "",
+	    (s & TD_STATUS_ERROR_BIT_STUFF) ? " BIT_STUFF," : "",
+	    (s & TD_STATUS_ERROR_RESERVED) ? " RESERVED," : "",
+	    td_act_size(instance)
+	);
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/hw_struct/transfer_descriptor.h
===================================================================
--- uspace/drv/uhci-hcd/hw_struct/transfer_descriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/hw_struct/transfer_descriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#ifndef DRV_UHCI_HW_STRUCT_TRANSFER_DESCRIPTOR_H
+#define DRV_UHCI_HW_STRUCT_TRANSFER_DESCRIPTOR_H
+
+#include <mem.h>
+#include <usb/usb.h>
+
+#include "link_pointer.h"
+
+/** Transfer Descriptor, defined in UHCI design guide p. 26 */
+typedef struct transfer_descriptor {
+	/** Pointer to the next entity (TD or QH) */
+	link_pointer_t next;
+
+	/** Status doubleword */
+	volatile uint32_t status;
+#define TD_STATUS_RESERVED_MASK 0xc000f800
+#define TD_STATUS_SPD_FLAG         (1 << 29)
+#define TD_STATUS_ERROR_COUNT_POS 27
+#define TD_STATUS_ERROR_COUNT_MASK 0x3
+#define TD_STATUS_LOW_SPEED_FLAG   (1 << 26)
+#define TD_STATUS_ISOCHRONOUS_FLAG (1 << 25)
+#define TD_STATUS_IOC_FLAG         (1 << 24)
+
+#define TD_STATUS_ERROR_ACTIVE    (1 << 23)
+#define TD_STATUS_ERROR_STALLED   (1 << 22)
+#define TD_STATUS_ERROR_BUFFER    (1 << 21)
+#define TD_STATUS_ERROR_BABBLE    (1 << 20)
+#define TD_STATUS_ERROR_NAK       (1 << 19)
+#define TD_STATUS_ERROR_CRC       (1 << 18)
+#define TD_STATUS_ERROR_BIT_STUFF (1 << 17)
+#define TD_STATUS_ERROR_RESERVED  (1 << 16)
+#define TD_STATUS_ERROR_POS 16
+#define TD_STATUS_ERROR_MASK 0xff
+
+#define TD_STATUS_ACTLEN_POS 0
+#define TD_STATUS_ACTLEN_MASK 0x7ff
+
+	/* double word with USB device specific info */
+	volatile uint32_t device;
+#define TD_DEVICE_MAXLEN_POS 21
+#define TD_DEVICE_MAXLEN_MASK 0x7ff
+#define TD_DEVICE_RESERVED_FLAG        (1 << 20)
+#define TD_DEVICE_DATA_TOGGLE_ONE_FLAG (1 << 19)
+#define TD_DEVICE_ENDPOINT_POS 15
+#define TD_DEVICE_ENDPOINT_MASK 0xf
+#define TD_DEVICE_ADDRESS_POS 8
+#define TD_DEVICE_ADDRESS_MASK 0x7f
+#define TD_DEVICE_PID_POS 0
+#define TD_DEVICE_PID_MASK 0xff
+
+	/** Pointer(physical) to the beginning of the transaction's buffer */
+	volatile uint32_t buffer_ptr;
+
+	/* According to UHCI design guide, there is 16 bytes of
+	 * data available here.
+	 * According to linux kernel the hardware does not care,
+	 * it just needs to be aligned. We don't use it anyway.
+	 */
+} __attribute__((packed)) td_t;
+
+
+void td_init(td_t *instance, int error_count, size_t size, bool toggle,
+    bool iso, bool low_speed, usb_target_t target, usb_packet_id pid,
+    void *buffer, td_t *next);
+
+int td_status(td_t *instance);
+
+void td_print_status(td_t *instance);
+/*----------------------------------------------------------------------------*/
+/** Helper function for parsing actual size out of TD.
+ *
+ * @param[in] instance TD structure to use.
+ * @return Parsed actual size.
+ */
+static inline size_t td_act_size(td_t *instance)
+{
+	assert(instance);
+	const uint32_t s = instance->status;
+	return ((s >> TD_STATUS_ACTLEN_POS) + 1) & TD_STATUS_ACTLEN_MASK;
+}
+/*----------------------------------------------------------------------------*/
+/** Check whether less than max data were received on SPD marked transfer.
+ *
+ * @param[in] instance TD structure to use.
+ * @return True if data packet is short (less than max bytes and SPD set),
+ * false otherwise.
+ */
+static inline bool td_is_short(td_t *instance)
+{
+	const size_t act_size = td_act_size(instance);
+	const size_t max_size =
+	    ((instance->device >> TD_DEVICE_MAXLEN_POS) + 1)
+	    & TD_DEVICE_MAXLEN_MASK;
+	return
+	    (instance->status | TD_STATUS_SPD_FLAG) && act_size < max_size;
+}
+/*----------------------------------------------------------------------------*/
+/** Helper function for parsing value of toggle bit.
+ *
+ * @param[in] instance TD structure to use.
+ * @return Toggle bit value.
+ */
+static inline int td_toggle(td_t *instance)
+{
+	assert(instance);
+	return (instance->device & TD_DEVICE_DATA_TOGGLE_ONE_FLAG) ? 1 : 0;
+}
+/*----------------------------------------------------------------------------*/
+/** Helper function for parsing value of active bit
+ *
+ * @param[in] instance TD structure to use.
+ * @return Active bit value.
+ */
+static inline bool td_is_active(td_t *instance)
+{
+	assert(instance);
+	return (instance->status & TD_STATUS_ERROR_ACTIVE) != 0;
+}
+/*----------------------------------------------------------------------------*/
+/** Helper function for setting IOC bit.
+ *
+ * @param[in] instance TD structure to use.
+ */
+static inline void td_set_ioc(td_t *instance)
+{
+	assert(instance);
+	instance->status |= TD_STATUS_IOC_FLAG;
+}
+/*----------------------------------------------------------------------------*/
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/iface.c
===================================================================
--- uspace/drv/uhci-hcd/iface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/iface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,404 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky, Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver hc interface implementation
+ */
+#include <ddf/driver.h>
+#include <errno.h>
+
+#include <usb/debug.h>
+#include <usb/host/endpoint.h>
+
+#include "iface.h"
+#include "batch.h"
+#include "hc.h"
+
+static inline int setup_batch(
+    ddf_fun_t *fun, usb_target_t target, usb_direction_t direction,
+    void *data, size_t size, void * setup_data, size_t setup_size,
+    usbhc_iface_transfer_in_callback_t in,
+    usbhc_iface_transfer_out_callback_t out, void *arg, const char* name,
+    hc_t **hc, usb_transfer_batch_t **batch)
+{
+	assert(hc);
+	assert(batch);
+	assert(fun);
+	*hc = fun_to_hc(fun);
+	assert(*hc);
+
+	size_t res_bw;
+	endpoint_t *ep = usb_endpoint_manager_get_ep(&(*hc)->ep_manager,
+	    target.address, target.endpoint, direction, &res_bw);
+	if (ep == NULL) {
+		usb_log_error("Endpoint(%d:%d) not registered for %s.\n",
+		    target.address, target.endpoint, name);
+		return ENOENT;
+	}
+
+	usb_log_debug("%s %d:%d %zu(%zu).\n",
+	    name, target.address, target.endpoint, size, ep->max_packet_size);
+
+	const size_t bw = bandwidth_count_usb11(
+	    ep->speed, ep->transfer_type, size, ep->max_packet_size);
+	if (res_bw < bw) {
+		usb_log_error("Endpoint(%d:%d) %s needs %zu bw "
+		    "but only %zu is reserved.\n",
+		    target.address, target.endpoint, name, bw, res_bw);
+		return ENOSPC;
+	}
+
+	*batch = batch_get(
+	        fun, ep, data, size, setup_data, setup_size, in, out, arg);
+	if (!*batch)
+		return ENOMEM;
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Request address interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] speed Speed to associate with the new default address.
+ * @param[out] address Place to write a new address.
+ * @return Error code.
+ */
+static int request_address(
+    ddf_fun_t *fun, usb_speed_t speed, usb_address_t *address)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	assert(address);
+
+	usb_log_debug("Address request with speed %d.\n", speed);
+	*address = device_keeper_get_free_address(&hc->manager, speed);
+	usb_log_debug("Address request with result: %d.\n", *address);
+	if (*address <= 0)
+		return *address;
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Bind address interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address Address of the device
+ * @param[in] handle Devman handle of the device driver.
+ * @return Error code.
+ */
+static int bind_address(
+  ddf_fun_t *fun, usb_address_t address, devman_handle_t handle)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Address bind %d-%" PRIun ".\n", address, handle);
+	usb_device_keeper_bind(&hc->manager, address, handle);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Find device handle by address interface function.
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address Address in question.
+ * @param[out] handle Where to store device handle if found.
+ * @return Error code.
+ */
+static int find_by_address(ddf_fun_t *fun, usb_address_t address,
+    devman_handle_t *handle)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	const bool found =
+	    usb_device_keeper_find_by_address(&hc->manager, address, handle);
+	return found ? EOK : ENOENT;
+}
+/*----------------------------------------------------------------------------*/
+/** Release address interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address USB address to be released.
+ * @return Error code.
+ */
+static int release_address(ddf_fun_t *fun, usb_address_t address)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Address release %d.\n", address);
+	usb_device_keeper_release(&hc->manager, address);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+static int register_endpoint(
+    ddf_fun_t *fun, usb_address_t address, usb_speed_t ep_speed,
+    usb_endpoint_t endpoint,
+    usb_transfer_type_t transfer_type, usb_direction_t direction,
+    size_t max_packet_size, unsigned int interval)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	const size_t size = max_packet_size;
+	usb_speed_t speed = usb_device_keeper_get_speed(&hc->manager, address);
+	if (speed >= USB_SPEED_MAX) {
+		speed = ep_speed;
+	}
+	usb_log_debug("Register endpoint %d:%d %s %s(%d) %zu(%zu) %u.\n",
+	    address, endpoint, usb_str_transfer_type(transfer_type),
+	    usb_str_speed(speed), direction, size, max_packet_size, interval);
+
+	return usb_endpoint_manager_add_ep(&hc->ep_manager, address, endpoint,
+	    direction, transfer_type, speed, max_packet_size, size);
+}
+/*----------------------------------------------------------------------------*/
+static int unregister_endpoint(
+    ddf_fun_t *fun, usb_address_t address,
+    usb_endpoint_t endpoint, usb_direction_t direction)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Unregister endpoint %d:%d %d.\n",
+	    address, endpoint, direction);
+	return usb_endpoint_manager_unregister_ep(&hc->ep_manager, address,
+	    endpoint, direction);
+}
+/*----------------------------------------------------------------------------*/
+/** Interrupt out transaction interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] target USB device to write to.
+ * @param[in] data Source of data.
+ * @param[in] size Size of data source.
+ * @param[in] callback Function to call on transaction completion
+ * @param[in] arg Additional for callback function.
+ * @return Error code.
+ */
+static int interrupt_out(
+    ddf_fun_t *fun, usb_target_t target, void *data,
+    size_t size, usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_OUT, data, size,
+	    NULL, 0, NULL, callback, arg, "Interrupt OUT", &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	assert(batch);
+	assert(hc);
+	batch_interrupt_out(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Interrupt in transaction interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] target USB device to write to.
+ * @param[out] data Data destination.
+ * @param[in] size Size of data source.
+ * @param[in] callback Function to call on transaction completion
+ * @param[in] arg Additional for callback function.
+ * @return Error code.
+ */
+static int interrupt_in(
+    ddf_fun_t *fun, usb_target_t target, void *data,
+    size_t size, usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_IN, data, size,
+	    NULL, 0, callback, NULL, arg, "Interrupt IN", &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	assert(batch);
+	assert(hc);
+	batch_interrupt_in(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Bulk out transaction interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] target USB device to write to.
+ * @param[in] data Source of data.
+ * @param[in] size Size of data source.
+ * @param[in] callback Function to call on transaction completion
+ * @param[in] arg Additional for callback function.
+ * @return Error code.
+ */
+static int bulk_out(
+    ddf_fun_t *fun, usb_target_t target, void *data,
+    size_t size, usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_OUT, data, size,
+	    NULL, 0, NULL, callback, arg, "Bulk OUT", &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	assert(batch);
+	assert(hc);
+	batch_bulk_out(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Bulk in transaction interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] target USB device to write to.
+ * @param[out] data Data destination.
+ * @param[in] size Size of data source.
+ * @param[in] callback Function to call on transaction completion
+ * @param[in] arg Additional for callback function.
+ * @return Error code.
+ */
+static int bulk_in(
+    ddf_fun_t *fun, usb_target_t target, void *data,
+    size_t size, usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_IN, data, size,
+	    NULL, 0, callback, NULL, arg, "Bulk IN", &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	assert(batch);
+	assert(hc);
+	batch_bulk_in(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Control write transaction interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] target USB device to write to.
+ * @param[in] setup_data Data to send with SETUP transfer.
+ * @param[in] setup_size Size of data to send with SETUP transfer (always 8B).
+ * @param[in] data Source of data.
+ * @param[in] size Size of data source.
+ * @param[in] callback Function to call on transaction completion.
+ * @param[in] arg Additional for callback function.
+ * @return Error code.
+ */
+static int control_write(
+    ddf_fun_t *fun, usb_target_t target,
+    void *setup_data, size_t setup_size, void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_BOTH, data, size,
+	    setup_data, setup_size, NULL, callback, arg, "Control WRITE",
+	    &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	assert(batch);
+	assert(hc);
+	usb_endpoint_manager_reset_if_need(&hc->ep_manager, target, setup_data);
+	batch_control_write(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Control read transaction interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] target USB device to write to.
+ * @param[in] setup_data Data to send with SETUP packet.
+ * @param[in] setup_size Size of data to send with SETUP packet (should be 8B).
+ * @param[out] data Source of data.
+ * @param[in] size Size of data source.
+ * @param[in] callback Function to call on transaction completion.
+ * @param[in] arg Additional for callback function.
+ * @return Error code.
+ */
+static int control_read(
+    ddf_fun_t *fun, usb_target_t target,
+    void *setup_data, size_t setup_size, void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	usb_transfer_batch_t *batch = NULL;
+	hc_t *hc = NULL;
+	int ret = setup_batch(fun, target, USB_DIRECTION_BOTH, data, size,
+	    setup_data, setup_size, callback, NULL, arg, "Control READ",
+	    &hc, &batch);
+	if (ret != EOK)
+		return ret;
+	assert(batch);
+	assert(hc);
+	batch_control_read(batch);
+	ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		usb_transfer_batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+usbhc_iface_t hc_iface = {
+	.request_address = request_address,
+	.bind_address = bind_address,
+	.find_by_address = find_by_address,
+	.release_address = release_address,
+
+	.register_endpoint = register_endpoint,
+	.unregister_endpoint = unregister_endpoint,
+
+	.interrupt_out = interrupt_out,
+	.interrupt_in = interrupt_in,
+
+	.bulk_out = bulk_out,
+	.bulk_in = bulk_in,
+
+	.control_write = control_write,
+	.control_read = control_read,
+};
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/iface.h
===================================================================
--- uspace/drv/uhci-hcd/iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver iface
+ */
+#ifndef DRV_UHCI_IFACE_H
+#define DRV_UHCI_IFACE_H
+
+#include <usbhc_iface.h>
+
+extern usbhc_iface_t hc_iface;
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/main.c
===================================================================
--- uspace/drv/uhci-hcd/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky, Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver initialization
+ */
+#include <ddf/driver.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/ddfiface.h>
+#include <usb/debug.h>
+
+#include "uhci.h"
+
+#define NAME "uhci-hcd"
+
+static int uhci_add_device(ddf_dev_t *device);
+/*----------------------------------------------------------------------------*/
+static driver_ops_t uhci_driver_ops = {
+	.add_device = uhci_add_device,
+};
+/*----------------------------------------------------------------------------*/
+static driver_t uhci_driver = {
+	.name = NAME,
+	.driver_ops = &uhci_driver_ops
+};
+/*----------------------------------------------------------------------------*/
+/** Initialize a new ddf driver instance for uhci hc and hub.
+ *
+ * @param[in] device DDF instance of the device to initialize.
+ * @return Error code.
+ */
+int uhci_add_device(ddf_dev_t *device)
+{
+	usb_log_debug2("uhci_add_device() called\n");
+	assert(device);
+
+	int ret = device_setup_uhci(device);
+	if (ret != EOK) {
+		usb_log_error("Failed to initialize UHCI driver: %s.\n",
+		    str_error(ret));
+		return ret;
+	}
+	usb_log_info("Controlling new UHCI device '%s'.\n", device->name);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize global driver structures (NONE).
+ *
+ * @param[in] argc Number of arguments in argv vector (ignored).
+ * @param[in] argv Cmdline argument vector (ignored).
+ * @return Error code.
+ *
+ * Driver debug level is set here.
+ */
+int main(int argc, char *argv[])
+{
+	printf(NAME ": HelenOS UHCI driver.\n");
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+
+	return ddf_driver_main(&uhci_driver);
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/pci.c
===================================================================
--- uspace/drv/uhci-hcd/pci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/pci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/**
+ * @addtogroup drvusbuhcihc
+ * @{
+ */
+/**
+ * @file
+ * PCI related functions needed by the UHCI driver.
+ */
+#include <errno.h>
+#include <assert.h>
+#include <devman.h>
+#include <device/hw_res.h>
+
+#include <usb/debug.h>
+#include <pci_dev_iface.h>
+
+#include "pci.h"
+
+/** Get I/O address of registers and IRQ for given device.
+ *
+ * @param[in] dev Device asking for the addresses.
+ * @param[out] io_reg_address Base address of the I/O range.
+ * @param[out] io_reg_size Size of the I/O range.
+ * @param[out] irq_no IRQ assigned to the device.
+ * @return Error code.
+ */
+int pci_get_my_registers(const ddf_dev_t *dev,
+    uintptr_t *io_reg_address, size_t *io_reg_size, int *irq_no)
+{
+	assert(dev);
+	assert(io_reg_address);
+	assert(io_reg_size);
+	assert(irq_no);
+
+	int parent_phone =
+	    devman_parent_device_connect(dev->handle, IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+	hw_resource_list_t hw_resources;
+	int rc = hw_res_get_resource_list(parent_phone, &hw_resources);
+	if (rc != EOK) {
+		async_hangup(parent_phone);
+		return rc;
+	}
+
+	uintptr_t io_address = 0;
+	size_t io_size = 0;
+	bool io_found = false;
+
+	int irq = 0;
+	bool irq_found = false;
+
+	size_t i;
+	for (i = 0; i < hw_resources.count; i++) {
+		const hw_resource_t *res = &hw_resources.resources[i];
+		switch (res->type)
+		{
+		case INTERRUPT:
+			irq = res->res.interrupt.irq;
+			irq_found = true;
+			usb_log_debug2("Found interrupt: %d.\n", irq);
+			break;
+
+		case IO_RANGE:
+			io_address = res->res.io_range.address;
+			io_size = res->res.io_range.size;
+			usb_log_debug2("Found io: %" PRIx64" %zu.\n",
+			    res->res.io_range.address, res->res.io_range.size);
+			io_found = true;
+			break;
+
+		default:
+			break;
+		}
+	}
+	async_hangup(parent_phone);
+
+	if (!io_found || !irq_found)
+		return ENOENT;
+
+	*io_reg_address = io_address;
+	*io_reg_size = io_size;
+	*irq_no = irq;
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Call the PCI driver with a request to enable interrupts
+ *
+ * @param[in] device Device asking for interrupts
+ * @return Error code.
+ */
+int pci_enable_interrupts(const ddf_dev_t *device)
+{
+	const int parent_phone =
+	    devman_parent_device_connect(device->handle, IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+	const bool enabled = hw_res_enable_interrupt(parent_phone);
+	async_hangup(parent_phone);
+	return enabled ? EOK : EIO;
+}
+/*----------------------------------------------------------------------------*/
+/** Call the PCI driver with a request to clear legacy support register
+ *
+ * @param[in] device Device asking to disable interrupts
+ * @return Error code.
+ */
+int pci_disable_legacy(const ddf_dev_t *device)
+{
+	assert(device);
+	const int parent_phone =
+	    devman_parent_device_connect(device->handle, IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+	/* See UHCI design guide for these values p.45,
+	 * write all WC bits in USB legacy register */
+	const sysarg_t address = 0xc0;
+	const sysarg_t value = 0xaf00;
+
+	const int rc = async_req_3_0(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+	    IPC_M_CONFIG_SPACE_WRITE_16, address, value);
+	async_hangup(parent_phone);
+
+	return rc;
+}
+/*----------------------------------------------------------------------------*/
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/pci.h
===================================================================
--- uspace/drv/uhci-hcd/pci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/pci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver PCI helper functions
+ */
+#ifndef DRV_UHCI_PCI_H
+#define DRV_UHCI_PCI_H
+
+#include <ddf/driver.h>
+
+int pci_get_my_registers(const ddf_dev_t *, uintptr_t *, size_t *, int *);
+int pci_enable_interrupts(const ddf_dev_t *);
+int pci_disable_legacy(const ddf_dev_t *);
+
+#endif
+/**
+ * @}
+ */
+
Index: uspace/drv/uhci-hcd/root_hub.c
===================================================================
--- uspace/drv/uhci-hcd/root_hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/root_hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhci
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#include <assert.h>
+#include <errno.h>
+#include <str_error.h>
+#include <stdio.h>
+
+#include <usb/debug.h>
+
+#include "root_hub.h"
+
+/** Root hub initialization
+ * @param[in] instance RH structure to initialize
+ * @param[in] fun DDF function representing UHCI root hub
+ * @param[in] reg_addr Address of root hub status and control registers.
+ * @param[in] reg_size Size of accessible address space.
+ * @return Error code.
+ */
+int rh_init(rh_t *instance, ddf_fun_t *fun, uintptr_t reg_addr, size_t reg_size)
+{
+	assert(fun);
+
+	char *match_str = NULL;
+	int ret = asprintf(&match_str, "usb&uhci&root-hub");
+	if (ret < 0) {
+		usb_log_error(
+		    "Failed(%d) to create root hub match string: %s.\n",
+		    ret, str_error(ret));
+		return ret;
+	}
+	assert(match_str);
+
+	ret = ddf_fun_add_match_id(fun, match_str, 100);
+	if (ret != EOK) {
+		free(match_str);
+		usb_log_error("Failed(%d) to add root hub match id: %s\n",
+		    ret, str_error(ret));
+		return ret;
+	}
+
+	/* Initialize resource structure */
+	instance->resource_list.count = 1;
+	instance->resource_list.resources = &instance->io_regs;
+
+	instance->io_regs.type = IO_RANGE;
+	instance->io_regs.res.io_range.address = reg_addr;
+	instance->io_regs.res.io_range.size = reg_size;
+	instance->io_regs.res.io_range.endianness = LITTLE_ENDIAN;
+
+	return EOK;
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/root_hub.h
===================================================================
--- uspace/drv/uhci-hcd/root_hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/root_hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbuhci
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#ifndef DRV_UHCI_RH_H
+#define DRV_UHCI_RH_H
+
+#include <ddf/driver.h>
+#include <ops/hw_res.h>
+
+/** DDF support structure for uhci-rhd driver, provides I/O resources */
+typedef struct rh {
+	/** List of resources available to the root hub. */
+	hw_resource_list_t resource_list;
+	/** The only resource in the RH resource list */
+	hw_resource_t io_regs;
+} rh_t;
+
+int rh_init(
+    rh_t *instance, ddf_fun_t *fun, uintptr_t reg_addr, size_t reg_size);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/transfer_list.c
===================================================================
--- uspace/drv/uhci-hcd/transfer_list.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/transfer_list.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,241 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver transfer list implementation
+ */
+#include <errno.h>
+#include <usb/debug.h>
+#include <arch/barrier.h>
+
+
+#include "transfer_list.h"
+#include "batch.h"
+
+static void transfer_list_remove_batch(
+    transfer_list_t *instance, usb_transfer_batch_t *batch);
+/*----------------------------------------------------------------------------*/
+/** Initialize transfer list structures.
+ *
+ * @param[in] instance Memory place to use.
+ * @param[in] name Name of the new list.
+ * @return Error code
+ *
+ * Allocates memory for internal qh_t structure.
+ */
+int transfer_list_init(transfer_list_t *instance, const char *name)
+{
+	assert(instance);
+	instance->name = name;
+	instance->queue_head = malloc32(sizeof(qh_t));
+	if (!instance->queue_head) {
+		usb_log_error("Failed to allocate queue head.\n");
+		return ENOMEM;
+	}
+	const uint32_t queue_head_pa = addr_to_phys(instance->queue_head);
+	usb_log_debug2("Transfer list %s setup with QH: %p (%#" PRIx32" ).\n",
+	    name, instance->queue_head, queue_head_pa);
+
+	qh_init(instance->queue_head);
+	list_initialize(&instance->batch_list);
+	fibril_mutex_initialize(&instance->guard);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Dispose transfer list structures.
+ *
+ * @param[in] instance Memory place to use.
+ *
+ * Frees memory of the internal qh_t structure.
+ */
+void transfer_list_fini(transfer_list_t *instance)
+{
+	assert(instance);
+	free32(instance->queue_head);
+}
+/** Set the next list in transfer list chain.
+ *
+ * @param[in] instance List to lead.
+ * @param[in] next List to append.
+ * @return Error code
+ *
+ * Does not check whether this replaces an existing list .
+ */
+void transfer_list_set_next(transfer_list_t *instance, transfer_list_t *next)
+{
+	assert(instance);
+	assert(instance->queue_head);
+	assert(next);
+	/* Set queue_head.next to point to the follower */
+	qh_set_next_qh(instance->queue_head, next->queue_head);
+}
+/*----------------------------------------------------------------------------*/
+/** Add transfer batch to the list and queue.
+ *
+ * @param[in] instance List to use.
+ * @param[in] batch Transfer batch to submit.
+ *
+ * The batch is added to the end of the list and queue.
+ */
+void transfer_list_add_batch(
+    transfer_list_t *instance, usb_transfer_batch_t *batch)
+{
+	assert(instance);
+	assert(batch);
+	usb_log_debug2("Queue %s: Adding batch(%p).\n", instance->name, batch);
+
+	fibril_mutex_lock(&instance->guard);
+
+	qh_t *last_qh = NULL;
+	/* Add to the hardware queue. */
+	if (list_empty(&instance->batch_list)) {
+		/* There is nothing scheduled */
+		last_qh = instance->queue_head;
+	} else {
+		/* There is something scheduled */
+		usb_transfer_batch_t *last =
+		    usb_transfer_batch_from_link(instance->batch_list.prev);
+		last_qh = batch_qh(last);
+	}
+	const uint32_t pa = addr_to_phys(batch_qh(batch));
+	assert((pa & LINK_POINTER_ADDRESS_MASK) == pa);
+
+	/* Make sure all data in the batch are written */
+	write_barrier();
+
+	/* keep link */
+	batch_qh(batch)->next = last_qh->next;
+	qh_set_next_qh(last_qh, batch_qh(batch));
+
+	/* Make sure the pointer is updated */
+	write_barrier();
+
+	/* Add to the driver's list */
+	list_append(&batch->link, &instance->batch_list);
+
+	usb_transfer_batch_t *first = list_get_instance(
+	    instance->batch_list.next, usb_transfer_batch_t, link);
+	usb_log_debug("Batch(%p) added to queue %s, first is %p.\n",
+		batch, instance->name, first);
+	fibril_mutex_unlock(&instance->guard);
+}
+/*----------------------------------------------------------------------------*/
+/** Add completed bantches to the provided list.
+ *
+ * @param[in] instance List to use.
+ * @param[in] done list to fill
+ */
+void transfer_list_remove_finished(transfer_list_t *instance, link_t *done)
+{
+	assert(instance);
+	assert(done);
+
+	fibril_mutex_lock(&instance->guard);
+	link_t *current = instance->batch_list.next;
+	while (current != &instance->batch_list) {
+		link_t * const next = current->next;
+		usb_transfer_batch_t *batch =
+		    usb_transfer_batch_from_link(current);
+
+		if (batch_is_complete(batch)) {
+			/* Save for processing */
+			transfer_list_remove_batch(instance, batch);
+			list_append(current, done);
+		}
+		current = next;
+	}
+	fibril_mutex_unlock(&instance->guard);
+}
+/*----------------------------------------------------------------------------*/
+/** Walk the list and finish all batches with EINTR.
+ *
+ * @param[in] instance List to use.
+ */
+void transfer_list_abort_all(transfer_list_t *instance)
+{
+	fibril_mutex_lock(&instance->guard);
+	while (!list_empty(&instance->batch_list)) {
+		link_t * const current = instance->batch_list.next;
+		usb_transfer_batch_t *batch =
+		    usb_transfer_batch_from_link(current);
+		transfer_list_remove_batch(instance, batch);
+		usb_transfer_batch_finish_error(batch, EINTR);
+	}
+	fibril_mutex_unlock(&instance->guard);
+}
+/*----------------------------------------------------------------------------*/
+/** Remove a transfer batch from the list and queue.
+ *
+ * @param[in] instance List to use.
+ * @param[in] batch Transfer batch to remove.
+ *
+ * Does not lock the transfer list, caller is responsible for that.
+ */
+void transfer_list_remove_batch(
+    transfer_list_t *instance, usb_transfer_batch_t *batch)
+{
+	assert(instance);
+	assert(instance->queue_head);
+	assert(batch);
+	assert(batch_qh(batch));
+	assert(fibril_mutex_is_locked(&instance->guard));
+
+	usb_log_debug2(
+	    "Queue %s: removing batch(%p).\n", instance->name, batch);
+
+	const char *qpos = NULL;
+	qh_t *prev_qh = NULL;
+	/* Remove from the hardware queue */
+	if (instance->batch_list.next == &batch->link) {
+		/* I'm the first one here */
+		prev_qh = instance->queue_head;
+		qpos = "FIRST";
+	} else {
+		/* The thing before me is a batch too */
+		usb_transfer_batch_t *prev =
+		    usb_transfer_batch_from_link(batch->link.prev);
+		prev_qh = batch_qh(prev);
+		qpos = "NOT FIRST";
+	}
+	assert((prev_qh->next & LINK_POINTER_ADDRESS_MASK)
+	    == addr_to_phys(batch_qh(batch)));
+	prev_qh->next = batch_qh(batch)->next;
+
+	/* Make sure the pointer is updated */
+	write_barrier();
+
+	/* Remove from the batch list */
+	list_remove(&batch->link);
+	usb_log_debug("Batch(%p) removed (%s) from %s, next: %x.\n",
+	    batch, qpos, instance->name, batch_qh(batch)->next);
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/transfer_list.h
===================================================================
--- uspace/drv/uhci-hcd/transfer_list.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/transfer_list.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver transfer list structure
+ */
+#ifndef DRV_UHCI_TRANSFER_LIST_H
+#define DRV_UHCI_TRANSFER_LIST_H
+
+#include <fibril_synch.h>
+#include <usb/host/batch.h>
+
+#include "hw_struct/queue_head.h"
+
+/** Structure maintaining both hw queue and software list
+ * of currently executed transfers
+ */
+typedef struct transfer_list {
+	/** Guard against multiple add/remove races */
+	fibril_mutex_t guard;
+	/** UHCI hw structure represeting this queue */
+	qh_t *queue_head;
+	/** Assigned name, for nicer debug output */
+	const char *name;
+	/** List of all batches in this list */
+	link_t batch_list;
+} transfer_list_t;
+
+void transfer_list_fini(transfer_list_t *instance);
+int transfer_list_init(transfer_list_t *instance, const char *name);
+void transfer_list_set_next(transfer_list_t *instance, transfer_list_t *next);
+void transfer_list_add_batch(
+    transfer_list_t *instance, usb_transfer_batch_t *batch);
+void transfer_list_remove_finished(transfer_list_t *instance, link_t *done);
+void transfer_list_abort_all(transfer_list_t *instance);
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/transfers.c
===================================================================
--- uspace/drv/uhci-hcd/transfers.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/transfers.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <usb/hcdhubd.h>
+#include <errno.h>
+
+#include "uhci.h"
+
+static int enqueue_transfer_out(device_t *dev,
+    usb_target_t target, usb_transfer_type_t transfer_type,
+    void *buffer, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	printf(NAME ": transfer OUT [%d.%d (%s); %zu]\n",
+	    target.address, target.endpoint,
+	    usb_str_transfer_type(transfer_type),
+	    size);
+
+	return ENOTSUP;
+}
+
+static int enqueue_transfer_setup(device_t *dev,
+    usb_target_t target, usb_transfer_type_t transfer_type,
+    void *buffer, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	printf(NAME ": transfer SETUP [%d.%d (%s); %zu]\n",
+	    target.address, target.endpoint,
+	    usb_str_transfer_type(transfer_type),
+	    size);
+
+	return ENOTSUP;
+}
+
+static int enqueue_transfer_in(device_t *dev,
+    usb_target_t target, usb_transfer_type_t transfer_type,
+    void *buffer, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	printf(NAME ": transfer IN [%d.%d (%s); %zu]\n",
+	    target.address, target.endpoint,
+	    usb_str_transfer_type(transfer_type),
+	    size);
+
+	return ENOTSUP;
+}
+
+
+static int get_address(device_t *dev, devman_handle_t handle,
+    usb_address_t *address)
+{
+	return ENOTSUP;
+}
+
+static int interrupt_out(device_t *dev, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	return enqueue_transfer_out(dev, target, USB_TRANSFER_INTERRUPT,
+	    data, size,
+	    callback, arg);
+}
+
+static int interrupt_in(device_t *dev, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	return enqueue_transfer_in(dev, target, USB_TRANSFER_INTERRUPT,
+	    data, size,
+	    callback, arg);
+}
+
+static int control_write_setup(device_t *dev, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	return enqueue_transfer_setup(dev, target, USB_TRANSFER_CONTROL,
+	    data, size,
+	    callback, arg);
+}
+
+static int control_write_data(device_t *dev, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	return enqueue_transfer_out(dev, target, USB_TRANSFER_CONTROL,
+	    data, size,
+	    callback, arg);
+}
+
+static int control_write_status(device_t *dev, usb_target_t target,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	return enqueue_transfer_in(dev, target, USB_TRANSFER_CONTROL,
+	    NULL, 0,
+	    callback, arg);
+}
+
+static int control_read_setup(device_t *dev, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	return enqueue_transfer_setup(dev, target, USB_TRANSFER_CONTROL,
+	    data, size,
+	    callback, arg);
+}
+
+static int control_read_data(device_t *dev, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	return enqueue_transfer_in(dev, target, USB_TRANSFER_CONTROL,
+	    data, size,
+	    callback, arg);
+}
+
+static int control_read_status(device_t *dev, usb_target_t target,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	return enqueue_transfer_out(dev, target, USB_TRANSFER_CONTROL,
+	    NULL, 0,
+	    callback, arg);
+}
+
+
+usbhc_iface_t uhci_iface = {
+	.tell_address = get_address,
+	.interrupt_out = interrupt_out,
+	.interrupt_in = interrupt_in,
+	.control_write_setup = control_write_setup,
+	.control_write_data = control_write_data,
+	.control_write_status = control_write_status,
+	.control_read_setup = control_read_setup,
+	.control_read_data = control_read_data,
+	.control_read_status = control_read_status
+};
Index: uspace/drv/uhci-hcd/uhci-hcd.ma
===================================================================
--- uspace/drv/uhci-hcd/uhci-hcd.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/uhci-hcd.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,25 @@
+10 pci/ven=8086&dev=7020
+10 pci/ven=8086&dev=7112
+
+10 pci/ven=8086&dev=27c8
+10 pci/ven=8086&dev=27c9
+10 pci/ven=8086&dev=27ca
+10 pci/ven=8086&dev=27cb
+
+
+10 pci/ven=8086&dev=2830
+10 pci/ven=8086&dev=2831
+10 pci/ven=8086&dev=2832
+10 pci/ven=8086&dev=2834
+10 pci/ven=8086&dev=2835
+
+10 pci/ven=8086&dev=2934
+10 pci/ven=8086&dev=2935
+10 pci/ven=8086&dev=2936
+10 pci/ven=8086&dev=2937
+10 pci/ven=8086&dev=2938
+10 pci/ven=8086&dev=2939
+
+10 pci/ven=8086&dev=24c2
+10 pci/ven=8086&dev=24c4
+10 pci/ven=8086&dev=24c7
Index: uspace/drv/uhci-hcd/uhci.c
===================================================================
--- uspace/drv/uhci-hcd/uhci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/uhci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,286 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbuhci
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#include <errno.h>
+#include <str_error.h>
+#include <ddf/interrupt.h>
+#include <usb_iface.h>
+#include <usb/ddfiface.h>
+#include <usb/debug.h>
+
+#include "uhci.h"
+#include "iface.h"
+#include "pci.h"
+
+#include "hc.h"
+#include "root_hub.h"
+
+/** Structure representing both functions of UHCI hc, USB host controller
+ * and USB root hub */
+typedef struct uhci {
+	/** Pointer to DDF represenation of UHCI host controller */
+	ddf_fun_t *hc_fun;
+	/** Pointer to DDF represenation of UHCI root hub */
+	ddf_fun_t *rh_fun;
+
+	/** Internal driver's represenation of UHCI host controller */
+	hc_t hc;
+	/** Internal driver's represenation of UHCI root hub */
+	rh_t rh;
+} uhci_t;
+
+static inline uhci_t * dev_to_uhci(const ddf_dev_t *dev)
+{
+	assert(dev);
+	assert(dev->driver_data);
+	return dev->driver_data;
+}
+/*----------------------------------------------------------------------------*/
+/** IRQ handling callback, forward status from call to diver structure.
+ *
+ * @param[in] dev DDF instance of the device to use.
+ * @param[in] iid (Unused).
+ * @param[in] call Pointer to the call from kernel.
+ */
+static void irq_handler(ddf_dev_t *dev, ipc_callid_t iid, ipc_call_t *call)
+{
+	assert(dev);
+	uhci_t *uhci = dev_to_uhci(dev);
+	hc_t *hc = &uhci->hc;
+	const uint16_t status = IPC_GET_ARG1(*call);
+	assert(hc);
+	hc_interrupt(hc, status);
+}
+/*----------------------------------------------------------------------------*/
+/** Operations supported by the HC driver */
+static ddf_dev_ops_t hc_ops = {
+	.interfaces[USBHC_DEV_IFACE] = &hc_iface, /* see iface.h/c */
+};
+/*----------------------------------------------------------------------------*/
+/** Get address of the device identified by handle.
+ *
+ * @param[in] fun DDF instance of the function to use.
+ * @param[in] handle DDF handle of the driver seeking its USB address.
+ * @param[out] address Found address.
+ */
+static int usb_iface_get_address(
+    ddf_fun_t *fun, devman_handle_t handle, usb_address_t *address)
+{
+	assert(fun);
+	usb_device_keeper_t *manager = &dev_to_uhci(fun->dev)->hc.manager;
+	usb_address_t addr = usb_device_keeper_find(manager, handle);
+
+	if (addr < 0) {
+		return addr;
+	}
+
+	if (address != NULL) {
+		*address = addr;
+	}
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Gets handle of the respective hc.
+ *
+ * @param[in] fun DDF function of uhci device.
+ * @param[out] handle Host cotnroller handle.
+ * @return Error code.
+ */
+static int usb_iface_get_hc_handle(ddf_fun_t *fun, devman_handle_t *handle)
+{
+	assert(fun);
+	ddf_fun_t *hc_fun = dev_to_uhci(fun->dev)->hc_fun;
+	assert(hc_fun);
+
+	if (handle != NULL)
+		*handle = hc_fun->handle;
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** USB interface implementation used by RH */
+static usb_iface_t usb_iface = {
+	.get_hc_handle = usb_iface_get_hc_handle,
+	.get_address = usb_iface_get_address
+};
+/*----------------------------------------------------------------------------*/
+/** Get root hub hw resources (I/O registers).
+ *
+ * @param[in] fun Root hub function.
+ * @return Pointer to the resource list used by the root hub.
+ */
+static hw_resource_list_t *get_resource_list(ddf_fun_t *fun)
+{
+	assert(fun);
+	rh_t *rh = fun->driver_data;
+	assert(rh);
+	return &rh->resource_list;
+}
+/*----------------------------------------------------------------------------*/
+/** Interface to provide the root hub driver with hw info */
+static hw_res_ops_t hw_res_iface = {
+	.get_resource_list = get_resource_list,
+	.enable_interrupt = NULL,
+};
+/*----------------------------------------------------------------------------*/
+/** RH function support for uhci-rhd */
+static ddf_dev_ops_t rh_ops = {
+	.interfaces[USB_DEV_IFACE] = &usb_iface,
+	.interfaces[HW_RES_DEV_IFACE] = &hw_res_iface
+};
+/*----------------------------------------------------------------------------*/
+/** Initialize hc and rh DDF structures and their respective drivers.
+ *
+ * @param[in] device DDF instance of the device to use.
+ *
+ * This function does all the preparatory work for hc and rh drivers:
+ *  - gets device's hw resources
+ *  - disables UHCI legacy support (PCI config space)
+ *  - attempts to enable interrupts
+ *  - registers interrupt handler
+ */
+int device_setup_uhci(ddf_dev_t *device)
+{
+	assert(device);
+	uhci_t *instance = malloc(sizeof(uhci_t));
+	if (instance == NULL) {
+		usb_log_error("Failed to allocate OHCI driver.\n");
+		return ENOMEM;
+	}
+
+#define CHECK_RET_DEST_FREE_RETURN(ret, message...) \
+if (ret != EOK) { \
+	if (instance->hc_fun) \
+		instance->hc_fun->ops = NULL; \
+		instance->hc_fun->driver_data = NULL; \
+		ddf_fun_destroy(instance->hc_fun); \
+	if (instance->rh_fun) {\
+		instance->rh_fun->ops = NULL; \
+		instance->rh_fun->driver_data = NULL; \
+		ddf_fun_destroy(instance->rh_fun); \
+	} \
+	free(instance); \
+	usb_log_error(message); \
+	return ret; \
+} else (void)0
+
+	instance->rh_fun = NULL;
+	instance->hc_fun = ddf_fun_create(device, fun_exposed, "uhci-hc");
+	int ret = (instance->hc_fun == NULL) ? ENOMEM : EOK;
+	CHECK_RET_DEST_FREE_RETURN(ret, "Failed to create UHCI HC function.\n");
+	instance->hc_fun->ops = &hc_ops;
+	instance->hc_fun->driver_data = &instance->hc;
+
+	instance->rh_fun = ddf_fun_create(device, fun_inner, "uhci-rh");
+	ret = (instance->rh_fun == NULL) ? ENOMEM : EOK;
+	CHECK_RET_DEST_FREE_RETURN(ret, "Failed to create UHCI RH function.\n");
+	instance->rh_fun->ops = &rh_ops;
+	instance->rh_fun->driver_data = &instance->rh;
+
+	uintptr_t reg_base = 0;
+	size_t reg_size = 0;
+	int irq = 0;
+
+	ret = pci_get_my_registers(device, &reg_base, &reg_size, &irq);
+	CHECK_RET_DEST_FREE_RETURN(ret,
+	    "Failed to get I/O addresses for %" PRIun ": %s.\n",
+	    device->handle, str_error(ret));
+	usb_log_debug("I/O regs at 0x%p (size %zu), IRQ %d.\n",
+	    (void *) reg_base, reg_size, irq);
+
+	ret = pci_disable_legacy(device);
+	CHECK_RET_DEST_FREE_RETURN(ret,
+	    "Failed(%d) to disable legacy USB: %s.\n", ret, str_error(ret));
+
+	bool interrupts = false;
+#ifdef CONFIG_USBHC_NO_INTERRUPTS
+	usb_log_warning("Interrupts disabled in OS config, " \
+	    "falling back to polling.\n");
+#else
+	ret = pci_enable_interrupts(device);
+	if (ret != EOK) {
+		usb_log_warning("Failed to enable interrupts: %s.\n",
+		    str_error(ret));
+		usb_log_info("HW interrupts not available, " \
+		    "falling back to polling.\n");
+	} else {
+		usb_log_debug("Hw interrupts enabled.\n");
+		interrupts = true;
+	}
+#endif
+
+
+	ret = hc_init(&instance->hc, (void*)reg_base, reg_size, interrupts);
+	CHECK_RET_DEST_FREE_RETURN(ret,
+	    "Failed(%d) to init uhci-hcd: %s.\n", ret, str_error(ret));
+
+#define CHECK_RET_FINI_RETURN(ret, message...) \
+if (ret != EOK) { \
+	hc_fini(&instance->hc); \
+	CHECK_RET_DEST_FREE_RETURN(ret, message); \
+	return ret; \
+} else (void)0
+
+	/* It does no harm if we register this on polling */
+	ret = register_interrupt_handler(device, irq, irq_handler,
+	    &instance->hc.interrupt_code);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to register interrupt handler: %s.\n",
+	    ret, str_error(ret));
+
+	ret = ddf_fun_bind(instance->hc_fun);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to bind UHCI device function: %s.\n",
+	    ret, str_error(ret));
+
+	ret = ddf_fun_add_to_class(instance->hc_fun, USB_HC_DDF_CLASS_NAME);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed to add UHCI to HC class: %s.\n", str_error(ret));
+
+	ret = rh_init(&instance->rh, instance->rh_fun,
+	    (uintptr_t)instance->hc.registers + 0x10, 4);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to setup UHCI root hub: %s.\n", ret, str_error(ret));
+
+	ret = ddf_fun_bind(instance->rh_fun);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to register UHCI root hub: %s.\n", ret, str_error(ret));
+
+	device->driver_data = instance;
+	return EOK;
+#undef CHECK_RET_FINI_RETURN
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/uhci.h
===================================================================
--- uspace/drv/uhci-hcd/uhci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/uhci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbuhci
+ * @{
+ */
+/** @file
+ * @brief UHCI driver main structure for both host controller and root-hub.
+ */
+#ifndef DRV_UHCI_UHCI_H
+#define DRV_UHCI_UHCI_H
+#include <ddf/driver.h>
+
+int device_setup_uhci(ddf_dev_t *device);
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/utils/malloc32.h
===================================================================
--- uspace/drv/uhci-hcd/utils/malloc32.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-hcd/utils/malloc32.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2010 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhci
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#ifndef DRV_UHCI_UTILS_MALLOC32_H
+#define DRV_UHCI_UTILS_MALLOC32_H
+
+#include <assert.h>
+#include <errno.h>
+#include <malloc.h>
+#include <mem.h>
+#include <as.h>
+
+#define UHCI_STRCUTURES_ALIGNMENT 16
+#define UHCI_REQUIRED_PAGE_SIZE 4096
+
+
+/** Get physical address translation
+ *
+ * @param[in] addr Virtual address to translate
+ * @return Physical address if exists, NULL otherwise.
+ */
+static inline uintptr_t addr_to_phys(void *addr)
+{
+	if (addr == NULL)
+		return 0;
+
+	uintptr_t result;
+	const int ret = as_get_physical_mapping(addr, &result);
+	if (ret != EOK)
+		return 0;
+	return (result | ((uintptr_t)addr & 0xfff));
+}
+/*----------------------------------------------------------------------------*/
+/** Physical mallocator simulator
+ *
+ * @param[in] size Size of the required memory space
+ * @return Address of the alligned and big enough memory place, NULL on failure.
+ */
+static inline void * malloc32(size_t size) {
+	/* This works only when the host has less than 4GB of memory as
+	 * physical address needs to fit into 32 bits */
+
+	/* If we need more than one page there is no guarantee that the
+	 * memory will be continuous */
+	if (size > PAGE_SIZE)
+		return NULL;
+	/* Calculate alignment to make sure the block won't cross page
+	 * boundary */
+	size_t alignment = UHCI_STRCUTURES_ALIGNMENT;
+	while (alignment < size)
+		alignment *= 2;
+	return memalign(alignment, size);
+}
+/*----------------------------------------------------------------------------*/
+/** Physical mallocator simulator
+ *
+ * @param[in] addr Address of the place allocated by malloc32
+ */
+static inline void free32(void *addr) {
+	if (!addr)
+		return;
+	free(addr);
+}
+/*----------------------------------------------------------------------------*/
+/** Create 4KB page mapping
+ *
+ * @return Address of the mapped page, NULL on failure.
+ */
+static inline void * get_page(void)
+{
+	void *free_address = as_get_mappable_page(UHCI_REQUIRED_PAGE_SIZE);
+	if (free_address == 0)
+		return NULL;
+	void *ret = as_area_create(free_address, UHCI_REQUIRED_PAGE_SIZE,
+		  AS_AREA_READ | AS_AREA_WRITE);
+	if (ret != free_address)
+		return NULL;
+	return ret;
+}
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-rhd/Makefile
===================================================================
--- uspace/drv/uhci-rhd/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-rhd/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,47 @@
+#
+# Copyright (c) 2010 Jan Vesely
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+
+LIBS = \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+BINARY = uhci-rhd
+
+SOURCES = \
+	main.c \
+	port.c \
+	root_hub.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/uhci-rhd/main.c
===================================================================
--- uspace/drv/uhci-rhd/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-rhd/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcirh
+ * @{
+ */
+/** @file
+ * @brief UHCI root hub initialization routines
+ */
+#include <ddf/driver.h>
+#include <devman.h>
+#include <device/hw_res.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb_iface.h>
+#include <usb/ddfiface.h>
+#include <usb/debug.h>
+
+#include "root_hub.h"
+
+#define NAME "uhci-rhd"
+
+static int hc_get_my_registers(const ddf_dev_t *dev,
+    uintptr_t *io_reg_address, size_t *io_reg_size);
+/*----------------------------------------------------------------------------*/
+static int uhci_rh_add_device(ddf_dev_t *device);
+/*----------------------------------------------------------------------------*/
+static driver_ops_t uhci_rh_driver_ops = {
+	.add_device = uhci_rh_add_device,
+};
+/*----------------------------------------------------------------------------*/
+static driver_t uhci_rh_driver = {
+	.name = NAME,
+	.driver_ops = &uhci_rh_driver_ops
+};
+/*----------------------------------------------------------------------------*/
+/** Initialize global driver structures (NONE).
+ *
+ * @param[in] argc Nmber of arguments in argv vector (ignored).
+ * @param[in] argv Cmdline argument vector (ignored).
+ * @return Error code.
+ *
+ * Driver debug level is set here.
+ */
+int main(int argc, char *argv[])
+{
+	printf(NAME ": HelenOS UHCI root hub driver.\n");
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+	return ddf_driver_main(&uhci_rh_driver);
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize a new ddf driver instance of UHCI root hub.
+ *
+ * @param[in] device DDF instance of the device to initialize.
+ * @return Error code.
+ */
+static int uhci_rh_add_device(ddf_dev_t *device)
+{
+	if (!device)
+		return EINVAL;
+
+	usb_log_debug2("uhci_rh_add_device(handle=%" PRIun ")\n",
+	    device->handle);
+
+	uintptr_t io_regs = 0;
+	size_t io_size = 0;
+	uhci_root_hub_t *rh = NULL;
+	int ret = EOK;
+
+#define CHECK_RET_FREE_RH_RETURN(ret, message...) \
+if (ret != EOK) { \
+	usb_log_error(message); \
+	if (rh) \
+		free(rh); \
+	return ret; \
+} else (void)0
+
+	ret = hc_get_my_registers(device, &io_regs, &io_size);
+	CHECK_RET_FREE_RH_RETURN(ret,
+	    "Failed to get registers from HC: %s.\n", str_error(ret));
+	usb_log_debug("I/O regs at %p (size %zuB).\n",
+	    (void *) io_regs, io_size);
+
+	rh = malloc(sizeof(uhci_root_hub_t));
+	ret = (rh == NULL) ? ENOMEM : EOK;
+	CHECK_RET_FREE_RH_RETURN(ret,
+	    "Failed to allocate rh driver instance.\n");
+
+	ret = uhci_root_hub_init(rh, (void*)io_regs, io_size, device);
+	CHECK_RET_FREE_RH_RETURN(ret,
+	    "Failed(%d) to initialize rh driver instance: %s.\n",
+	    ret, str_error(ret));
+
+	device->driver_data = rh;
+	usb_log_info("Controlling root hub '%s' (%" PRIun ").\n",
+	    device->name, device->handle);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Get address of I/O registers.
+ *
+ * @param[in] dev Device asking for the addresses.
+ * @param[out] io_reg_address Base address of the memory range.
+ * @param[out] io_reg_size Size of the memory range.
+ * @return Error code.
+ */
+int hc_get_my_registers(
+    const ddf_dev_t *dev, uintptr_t *io_reg_address, size_t *io_reg_size)
+{
+	assert(dev);
+
+	const int parent_phone = devman_parent_device_connect(dev->handle,
+	    IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+	hw_resource_list_t hw_resources;
+	const int ret = hw_res_get_resource_list(parent_phone, &hw_resources);
+	if (ret != EOK) {
+		async_hangup(parent_phone);
+		return ret;
+	}
+
+	uintptr_t io_address = 0;
+	size_t io_size = 0;
+	bool io_found = false;
+
+	size_t i = 0;
+	for (; i < hw_resources.count; i++) {
+		hw_resource_t *res = &hw_resources.resources[i];
+		if (res->type == IO_RANGE) {
+			io_address = res->res.io_range.address;
+			io_size = res->res.io_range.size;
+			io_found = true;
+		}
+	}
+	async_hangup(parent_phone);
+
+	if (!io_found) {
+		return ENOENT;
+	}
+	if (io_reg_address != NULL) {
+		*io_reg_address = io_address;
+	}
+	if (io_reg_size != NULL) {
+		*io_reg_size = io_size;
+	}
+	return EOK;
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-rhd/port.c
===================================================================
--- uspace/drv/uhci-rhd/port.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-rhd/port.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,355 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcirh
+ * @{
+ */
+/** @file
+ * @brief UHCI root hub port routines
+ */
+#include <libarch/ddi.h>  /* pio_read and pio_write */
+#include <fibril_synch.h> /* async_usleep */
+#include <errno.h>
+#include <str_error.h>
+#include <async.h>
+
+#include <usb/usb.h>    /* usb_address_t */
+#include <usb/dev/hub.h>    /* usb_hc_new_device_wrapper */
+#include <usb/debug.h>
+
+#include "port.h"
+
+static int uhci_port_check(void *port);
+static int uhci_port_reset_enable(int portno, void *arg);
+static int uhci_port_new_device(uhci_port_t *port, usb_speed_t speed);
+static int uhci_port_remove_device(uhci_port_t *port);
+static int uhci_port_set_enabled(uhci_port_t *port, bool enabled);
+static void uhci_port_print_status(
+    uhci_port_t *port, const port_status_t value);
+
+/** Register reading helper function.
+ *
+ * @param[in] port Structure to use.
+ * @return Error code. (Always EOK)
+ */
+static inline port_status_t uhci_port_read_status(uhci_port_t *port)
+{
+	assert(port);
+	return pio_read_16(port->address);
+}
+/*----------------------------------------------------------------------------*/
+/** Register writing helper function.
+ *
+ * @param[in] port Structure to use.
+ * @param[in] val New register value.
+ * @return Error code. (Always EOK)
+ */
+static inline void uhci_port_write_status(uhci_port_t *port, port_status_t val)
+{
+	assert(port);
+	pio_write_16(port->address, val);
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize UHCI root hub port instance.
+ *
+ * @param[in] port Memory structure to use.
+ * @param[in] address Address of I/O register.
+ * @param[in] number Port number.
+ * @param[in] usec Polling interval.
+ * @param[in] rh Pointer to ddf instance of the root hub driver.
+ * @return Error code.
+ *
+ * Creates and starts the polling fibril.
+ */
+int uhci_port_init(uhci_port_t *port,
+    port_status_t *address, unsigned number, unsigned usec, ddf_dev_t *rh)
+{
+	assert(port);
+	char *id_string;
+	asprintf(&id_string, "Port (%p - %u)", port, number);
+	if (id_string == NULL) {
+		return ENOMEM;
+	}
+
+	port->id_string = id_string;
+	port->address = address;
+	port->number = number;
+	port->wait_period_usec = usec;
+	port->attached_device = 0;
+	port->rh = rh;
+
+	int ret =
+	    usb_hc_connection_initialize_from_device(&port->hc_connection, rh);
+	if (ret != EOK) {
+		usb_log_error("%s: failed to initialize connection to HC.",
+		    port->id_string);
+		free(id_string);
+		return ret;
+	}
+
+	port->checker = fibril_create(uhci_port_check, port);
+	if (port->checker == 0) {
+		usb_log_error("%s: failed to create polling fibril.",
+		    port->id_string);
+		free(id_string);
+		return ENOMEM;
+	}
+
+	fibril_add_ready(port->checker);
+	usb_log_debug("%s: Started polling fibril (%" PRIun ").\n",
+	    port->id_string, port->checker);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Cleanup UHCI root hub port instance.
+ *
+ * @param[in] port Memory structure to use.
+ *
+ * Stops the polling fibril.
+ */
+void uhci_port_fini(uhci_port_t *port)
+{
+	assert(port);
+	free(port->id_string);
+	// TODO: Kill fibril here
+	return;
+}
+/*----------------------------------------------------------------------------*/
+/** Periodically checks port status and reports new devices.
+ *
+ * @param[in] port Port structure to use.
+ * @return Error code.
+ */
+int uhci_port_check(void *port)
+{
+	uhci_port_t *instance = port;
+	assert(instance);
+
+	while (1) {
+		async_usleep(instance->wait_period_usec);
+
+		/* Read register value */
+		const port_status_t port_status =
+		    uhci_port_read_status(instance);
+
+		/* Print the value if it's interesting */
+		if (port_status & ~STATUS_ALWAYS_ONE)
+			uhci_port_print_status(instance, port_status);
+
+		if ((port_status & STATUS_CONNECTED_CHANGED) == 0)
+			continue;
+
+		usb_log_debug("%s: Connected change detected: %x.\n",
+		    instance->id_string, port_status);
+
+		/* Remove any old device */
+		if (instance->attached_device) {
+			usb_log_debug2("%s: Removing device.\n",
+			    instance->id_string);
+			uhci_port_remove_device(instance);
+		}
+
+		int ret =
+		    usb_hc_connection_open(&instance->hc_connection);
+		if (ret != EOK) {
+			usb_log_error("%s: Failed to connect to HC.",
+			    instance->id_string);
+			continue;
+		}
+
+		if ((port_status & STATUS_CONNECTED) != 0) {
+			/* New device */
+			const usb_speed_t speed =
+			    ((port_status & STATUS_LOW_SPEED) != 0) ?
+			    USB_SPEED_LOW : USB_SPEED_FULL;
+			uhci_port_new_device(instance, speed);
+		} else {
+			/* Write one to WC bits, to ack changes */
+			uhci_port_write_status(instance, port_status);
+			usb_log_debug("%s: status change ACK.\n",
+			    instance->id_string);
+		}
+
+		ret = usb_hc_connection_close(&instance->hc_connection);
+		if (ret != EOK) {
+			usb_log_error("%s: Failed to disconnect.",
+			    instance->id_string);
+		}
+	}
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Callback for enabling port during adding a new device.
+ *
+ * @param portno Port number (unused).
+ * @param arg Pointer to uhci_port_t of port with the new device.
+ * @return Error code.
+ *
+ * Resets and enables the ub port.
+ */
+int uhci_port_reset_enable(int portno, void *arg)
+{
+	uhci_port_t *port = arg;
+	assert(port);
+
+	usb_log_debug2("%s: new_device_enable_port.\n", port->id_string);
+
+	/*
+	 * Resets from root ports should be nominally 50ms (USB spec 7.1.7.3)
+	 */
+	{
+		usb_log_debug("%s: Reset Signal start.\n", port->id_string);
+		port_status_t port_status = uhci_port_read_status(port);
+		port_status |= STATUS_IN_RESET;
+		uhci_port_write_status(port, port_status);
+		async_usleep(50000);
+		port_status = uhci_port_read_status(port);
+		port_status &= ~STATUS_IN_RESET;
+		uhci_port_write_status(port, port_status);
+		while (uhci_port_read_status(port) & STATUS_IN_RESET);
+	}
+	/* PIO delay, should not be longer than 3ms as the device might
+	 * enter suspend state. */
+	udelay(10);
+	/* Enable the port. */
+	uhci_port_set_enabled(port, true);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Initialize and report connected device.
+ *
+ * @param[in] port Port structure to use.
+ * @param[in] speed Detected speed.
+ * @return Error code.
+ *
+ * Uses libUSB function to do the actual work.
+ */
+int uhci_port_new_device(uhci_port_t *port, usb_speed_t speed)
+{
+	assert(port);
+	assert(usb_hc_connection_is_opened(&port->hc_connection));
+
+	usb_log_debug("%s: Detected new device.\n", port->id_string);
+
+	int ret, count = 0;
+	usb_address_t dev_addr;
+	do {
+		ret = usb_hc_new_device_wrapper(port->rh, &port->hc_connection,
+		    speed, uhci_port_reset_enable, port->number, port,
+		    &dev_addr, &port->attached_device, NULL, NULL, NULL);
+	} while (ret != EOK && ++count < 4);
+
+	if (ret != EOK) {
+		usb_log_error("%s: Failed(%d) to add device: %s.\n",
+		    port->id_string, ret, str_error(ret));
+		uhci_port_set_enabled(port, false);
+		return ret;
+	}
+
+	usb_log_info("New device at port %u, address %d (handle %" PRIun ").\n",
+	    port->number, dev_addr, port->attached_device);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Remove device.
+ *
+ * @param[in] port Memory structure to use.
+ * @return Error code.
+ *
+ * Does not work, DDF does not support device removal.
+ * Does not even free used USB address (it would be dangerous if tis driver
+ * is still running).
+ */
+int uhci_port_remove_device(uhci_port_t *port)
+{
+	usb_log_error("%s: Don't know how to remove device %" PRIun ".\n",
+	    port->id_string, port->attached_device);
+	port->attached_device = 0;
+	return ENOTSUP;
+}
+/*----------------------------------------------------------------------------*/
+/** Enable or disable root hub port.
+ *
+ * @param[in] port Port structure to use.
+ * @param[in] enabled Port status to set.
+ * @return Error code. (Always EOK)
+ */
+int uhci_port_set_enabled(uhci_port_t *port, bool enabled)
+{
+	assert(port);
+
+	/* Read register value */
+	port_status_t port_status = uhci_port_read_status(port);
+
+	/* Set enabled bit */
+	if (enabled) {
+		port_status |= STATUS_ENABLED;
+	} else {
+		port_status &= ~STATUS_ENABLED;
+	}
+
+	/* Write new value. */
+	uhci_port_write_status(port, port_status);
+
+	/* Wait for port to become enabled */
+	do {
+		port_status = uhci_port_read_status(port);
+	} while ((port_status & STATUS_CONNECTED) &&
+	    !(port_status & STATUS_ENABLED));
+
+	usb_log_debug("%s: %sabled port.\n",
+		port->id_string, enabled ? "En" : "Dis");
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Print the port status value in a human friendly way
+ *
+ * @param[in] port Port structure to use.
+ * @param[in] value Port register value to print.
+ * @return Error code. (Always EOK)
+ */
+void uhci_port_print_status(uhci_port_t *port, const port_status_t value)
+{
+	assert(port);
+	usb_log_debug2("%s Port status(%#x):%s%s%s%s%s%s%s%s%s%s%s.\n",
+	    port->id_string, value,
+	    (value & STATUS_SUSPEND) ? " SUSPENDED," : "",
+	    (value & STATUS_RESUME) ? " IN RESUME," : "",
+	    (value & STATUS_IN_RESET) ? " IN RESET," : "",
+	    (value & STATUS_LINE_D_MINUS) ? " VD-," : "",
+	    (value & STATUS_LINE_D_PLUS) ? " VD+," : "",
+	    (value & STATUS_LOW_SPEED) ? " LOWSPEED," : "",
+	    (value & STATUS_ENABLED_CHANGED) ? " ENABLED-CHANGE," : "",
+	    (value & STATUS_ENABLED) ? " ENABLED," : "",
+	    (value & STATUS_CONNECTED_CHANGED) ? " CONNECTED-CHANGE," : "",
+	    (value & STATUS_CONNECTED) ? " CONNECTED," : "",
+	    (value & STATUS_ALWAYS_ONE) ? " ALWAYS ONE" : " ERR: NO ALWAYS ONE"
+	);
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-rhd/port.h
===================================================================
--- uspace/drv/uhci-rhd/port.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-rhd/port.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcirh
+ * @{
+ */
+/** @file
+ * @brief UHCI root hub port routines
+ */
+#ifndef DRV_UHCI_PORT_H
+#define DRV_UHCI_PORT_H
+
+#include <stdint.h>
+#include <fibril.h>
+#include <ddf/driver.h>
+#include <usb/hc.h> /* usb_hc_connection_t */
+
+typedef uint16_t port_status_t;
+#define STATUS_CONNECTED         (1 << 0)
+#define STATUS_CONNECTED_CHANGED (1 << 1)
+#define STATUS_ENABLED           (1 << 2)
+#define STATUS_ENABLED_CHANGED   (1 << 3)
+#define STATUS_LINE_D_PLUS       (1 << 4)
+#define STATUS_LINE_D_MINUS      (1 << 5)
+#define STATUS_RESUME            (1 << 6)
+#define STATUS_ALWAYS_ONE        (1 << 7)
+
+#define STATUS_LOW_SPEED (1 <<  8)
+#define STATUS_IN_RESET  (1 <<  9)
+#define STATUS_SUSPEND   (1 << 12)
+
+/** UHCI port structure */
+typedef struct uhci_port {
+	const char *id_string;
+	port_status_t *address;
+	unsigned number;
+	unsigned wait_period_usec;
+	usb_hc_connection_t hc_connection;
+	ddf_dev_t *rh;
+	devman_handle_t attached_device;
+	fid_t checker;
+} uhci_port_t;
+
+int uhci_port_init(
+    uhci_port_t *port, port_status_t *address, unsigned number,
+    unsigned usec, ddf_dev_t *rh);
+
+void uhci_port_fini(uhci_port_t *port);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-rhd/root_hub.c
===================================================================
--- uspace/drv/uhci-rhd/root_hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-rhd/root_hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcirh
+ * @{
+ */
+/** @file
+ * @brief UHCI root hub driver
+ */
+#include <errno.h>
+#include <str_error.h>
+#include <ddi.h>
+#include <usb/debug.h>
+
+#include "root_hub.h"
+
+/** Initialize UHCI root hub instance.
+ *
+ * @param[in] instance Driver memory structure to use.
+ * @param[in] addr Address of I/O registers.
+ * @param[in] size Size of available I/O space.
+ * @param[in] rh Pointer to DDF instance of the root hub driver.
+ * @return Error code.
+ */
+int uhci_root_hub_init(
+  uhci_root_hub_t *instance, void *addr, size_t size, ddf_dev_t *rh)
+{
+	assert(instance);
+	assert(rh);
+
+	/* Allow access to root hub port registers */
+	assert(sizeof(port_status_t) * UHCI_ROOT_HUB_PORT_COUNT <= size);
+	port_status_t *regs;
+	int ret = pio_enable(addr, size, (void**)&regs);
+	if (ret < 0) {
+		usb_log_error(
+		    "Failed(%d) to gain access to port registers at %p: %s.\n",
+		    ret, regs, str_error(ret));
+		return ret;
+	}
+
+	/* Initialize root hub ports */
+	unsigned i = 0;
+	for (; i < UHCI_ROOT_HUB_PORT_COUNT; ++i) {
+		ret = uhci_port_init(
+		    &instance->ports[i], &regs[i], i, ROOT_HUB_WAIT_USEC, rh);
+		if (ret != EOK) {
+			unsigned j = 0;
+			for (;j < i; ++j)
+				uhci_port_fini(&instance->ports[j]);
+			return ret;
+		}
+	}
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Cleanup UHCI root hub instance.
+ *
+ * @param[in] instance Root hub structure to use.
+ */
+void uhci_root_hub_fini(uhci_root_hub_t* instance)
+{
+	assert(instance);
+	unsigned i = 0;
+	for (; i < UHCI_ROOT_HUB_PORT_COUNT; ++i) {
+		uhci_port_fini(&instance->ports[i]);
+	}
+}
+/*----------------------------------------------------------------------------*/
+/**
+ * @}
+ */
Index: uspace/drv/uhci-rhd/root_hub.h
===================================================================
--- uspace/drv/uhci-rhd/root_hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-rhd/root_hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbuhcirh
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#ifndef DRV_UHCI_ROOT_HUB_H
+#define DRV_UHCI_ROOT_HUB_H
+
+#include <ddf/driver.h>
+
+#include "port.h"
+
+#define UHCI_ROOT_HUB_PORT_COUNT 2
+#define ROOT_HUB_WAIT_USEC 250000 /* 250 miliseconds */
+
+/** UHCI root hub drvier structure */
+typedef struct root_hub {
+	/** Ports provided by the hub */
+	uhci_port_t ports[UHCI_ROOT_HUB_PORT_COUNT];
+} uhci_root_hub_t;
+
+int uhci_root_hub_init(
+    uhci_root_hub_t *instance, void *addr, size_t size, ddf_dev_t *rh);
+
+void uhci_root_hub_fini(uhci_root_hub_t *instance);
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-rhd/uhci-rhd.ma
===================================================================
--- uspace/drv/uhci-rhd/uhci-rhd.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/uhci-rhd/uhci-rhd.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,1 @@
+10 usb&uhci&root-hub
Index: uspace/drv/usbflbk/Makefile
===================================================================
--- uspace/drv/usbflbk/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbflbk/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,45 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+
+LIBS = \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+BINARY = usbflbk
+
+SOURCES = \
+	main.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/usbflbk/main.c
===================================================================
--- uspace/drv/usbflbk/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbflbk/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbfallback
+ * @{
+ */
+/**
+ * @file
+ * Main routines of USB fallback driver.
+ */
+#include <usb/dev/driver.h>
+#include <usb/debug.h>
+#include <errno.h>
+#include <str_error.h>
+
+#define NAME "usbflbk"
+
+/** Callback when new device is attached and recognized by DDF.
+ *
+ * @param dev Representation of a generic DDF device.
+ * @return Error code.
+ */
+static int usbfallback_add_device(usb_device_t *dev)
+{
+	int rc;
+	const char *fun_name = "ctl";
+
+	ddf_fun_t *ctl_fun = ddf_fun_create(dev->ddf_dev, fun_exposed,
+	    fun_name);
+	if (ctl_fun == NULL) {
+		usb_log_error("Failed to create control function.\n");
+		return ENOMEM;
+	}
+	rc = ddf_fun_bind(ctl_fun);
+	if (rc != EOK) {
+		usb_log_error("Failed to bind control function: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+
+	usb_log_info("Pretending to control %s `%s'" \
+	    " (node `%s', handle %" PRIun ").\n",
+	    dev->interface_no < 0 ? "device" : "interface",
+	    dev->ddf_dev->name, fun_name, dev->ddf_dev->handle);
+
+	return EOK;
+}
+
+/** USB fallback driver ops. */
+static usb_driver_ops_t usbfallback_driver_ops = {
+	.add_device = usbfallback_add_device,
+};
+
+/** USB fallback driver. */
+static usb_driver_t usbfallback_driver = {
+	.name = NAME,
+	.ops = &usbfallback_driver_ops,
+	.endpoints = NULL
+};
+
+int main(int argc, char *argv[])
+{
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+
+	return usb_driver_main(&usbfallback_driver);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbflbk/usbflbk.ma
===================================================================
--- uspace/drv/usbflbk/usbflbk.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbflbk/usbflbk.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,2 @@
+10 usb&fallback
+10 usb&interface&fallback
Index: uspace/drv/usbhid/Makefile
===================================================================
--- uspace/drv/usbhid/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,70 @@
+#
+# Copyright (c) 2010-2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+
+LIBS = \
+	$(LIBUSBHID_PREFIX)/libusbhid.a \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I. \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBUSBHID_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+BINARY = usbhid
+
+STOLEN_LAYOUT_SOURCES = \
+        kbd/layout/us_qwerty.c \
+        kbd/layout/us_dvorak.c \
+        kbd/layout/cz.c
+
+SOURCES = \
+	main.c \
+	usbhid.c \
+	subdrivers.c \
+	kbd/conv.c \
+	kbd/kbddev.c \
+	kbd/kbdrepeat.c \
+	generic/hiddev.c \
+	mouse/mousedev.c \
+	multimedia/multimedia.c \
+	multimedia/keymap.c \
+	$(STOLEN_LAYOUT_SOURCES)
+
+EXTRA_CLEAN = $(STOLEN_LAYOUT_SOURCES)
+
+SRV_KBD = $(USPACE_PREFIX)/srv/hid/kbd
+
+include $(USPACE_PREFIX)/Makefile.common
+
+kbd/layout/%.c: $(SRV_KBD)/layout/%.c
+	ln -sfn ../../$< $@
Index: uspace/drv/usbhid/generic/hiddev.c
===================================================================
--- uspace/drv/usbhid/generic/hiddev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/generic/hiddev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,244 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/**
+ * @file
+ * USB HID driver API.
+ */
+
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+#include <errno.h>
+#include <str_error.h>
+#include <bool.h>
+
+#include <usbhid_iface.h>
+
+#include "hiddev.h"
+#include "usbhid.h"
+
+/*----------------------------------------------------------------------------*/
+
+usb_endpoint_description_t usb_hid_generic_poll_endpoint_description = {
+	.transfer_type = USB_TRANSFER_INTERRUPT,
+	.direction = USB_DIRECTION_IN,
+	.interface_class = USB_CLASS_HID,
+	.flags = 0
+};
+
+const char *HID_GENERIC_FUN_NAME = "hid";
+const char *HID_GENERIC_CLASS_NAME = "hid";
+
+/*----------------------------------------------------------------------------*/
+
+static size_t usb_generic_hid_get_event_length(ddf_fun_t *fun);
+
+static int usb_generic_hid_get_event(ddf_fun_t *fun, uint8_t *buffer, 
+    size_t size, size_t *act_size, int *event_nr, unsigned int flags);
+
+static int usb_generic_hid_client_connected(ddf_fun_t *fun);
+
+static size_t usb_generic_get_report_descriptor_length(ddf_fun_t *fun);
+
+static int usb_generic_get_report_descriptor(ddf_fun_t *fun, uint8_t *desc, 
+    size_t size, size_t *actual_size);
+
+/*----------------------------------------------------------------------------*/
+
+static usbhid_iface_t usb_generic_iface = {
+	.get_event = usb_generic_hid_get_event,
+	.get_event_length = usb_generic_hid_get_event_length,
+	.get_report_descriptor_length = usb_generic_get_report_descriptor_length,
+	.get_report_descriptor = usb_generic_get_report_descriptor
+};
+
+static ddf_dev_ops_t usb_generic_hid_ops = {
+	.interfaces[USBHID_DEV_IFACE] = &usb_generic_iface,
+	.open = usb_generic_hid_client_connected
+};
+
+/*----------------------------------------------------------------------------*/
+
+static size_t usb_generic_hid_get_event_length(ddf_fun_t *fun)
+{
+	usb_log_debug2("Generic HID: Get event length (fun: %p, "
+	    "fun->driver_data: %p.\n", fun, fun->driver_data);
+	
+	if (fun == NULL || fun->driver_data == NULL) {
+		return 0;
+	}
+
+	usb_hid_dev_t *hid_dev = (usb_hid_dev_t *)fun->driver_data;
+	
+	usb_log_debug2("hid_dev: %p, Max input report size (%zu).\n",
+	    hid_dev, hid_dev->max_input_report_size);
+	
+	return hid_dev->max_input_report_size;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_generic_hid_get_event(ddf_fun_t *fun, uint8_t *buffer, 
+    size_t size, size_t *act_size, int *event_nr, unsigned int flags)
+{
+	usb_log_debug2("Generic HID: Get event.\n");
+	
+	if (fun == NULL || fun->driver_data == NULL || buffer == NULL
+	    || act_size == NULL || event_nr == NULL) {
+		usb_log_debug("No function");
+		return EINVAL;
+	}
+
+	usb_hid_dev_t *hid_dev = (usb_hid_dev_t *)fun->driver_data;
+	
+	if (hid_dev->input_report_size > size) {
+		usb_log_debug("input_report_size > size (%zu, %zu)\n", 
+		    hid_dev->input_report_size, size);
+		return EINVAL;	// TODO: other error code
+	}
+	
+	/*! @todo This should probably be somehow atomic. */
+	memcpy(buffer, hid_dev->input_report, 
+	    hid_dev->input_report_size);
+	*act_size = hid_dev->input_report_size;
+	*event_nr = usb_hid_report_number(hid_dev);
+	
+	usb_log_debug2("OK\n");
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static size_t usb_generic_get_report_descriptor_length(ddf_fun_t *fun)
+{
+	usb_log_debug("Generic HID: Get report descriptor length.\n");
+	
+	if (fun == NULL || fun->driver_data == NULL) {
+		usb_log_debug("No function");
+		return EINVAL;
+	}
+	
+	usb_hid_dev_t *hid_dev = (usb_hid_dev_t *)fun->driver_data;
+	
+	usb_log_debug2("hid_dev->report_desc_size = %zu\n", 
+	    hid_dev->report_desc_size);
+	
+	return hid_dev->report_desc_size;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_generic_get_report_descriptor(ddf_fun_t *fun, uint8_t *desc, 
+    size_t size, size_t *actual_size)
+{
+	usb_log_debug2("Generic HID: Get report descriptor.\n");
+	
+	if (fun == NULL || fun->driver_data == NULL) {
+		usb_log_debug("No function");
+		return EINVAL;
+	}
+	
+	usb_hid_dev_t *hid_dev = (usb_hid_dev_t *)fun->driver_data;
+	
+	if (hid_dev->report_desc_size > size) {
+		return EINVAL;
+	}
+	
+	memcpy(desc, hid_dev->report_desc, hid_dev->report_desc_size);
+	*actual_size = hid_dev->report_desc_size;
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_generic_hid_client_connected(ddf_fun_t *fun)
+{
+	usb_log_debug("Generic HID: Client connected.\n");
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_generic_hid_create_function(usb_hid_dev_t *hid_dev)
+{	
+	/* Create the function exposed under /dev/devices. */
+	/** @todo Generate numbers for the devices? */
+	usb_log_debug("Creating DDF function %s...\n", HID_GENERIC_FUN_NAME);
+	ddf_fun_t *fun = ddf_fun_create(hid_dev->usb_dev->ddf_dev, fun_exposed, 
+	    HID_GENERIC_FUN_NAME);
+	if (fun == NULL) {
+		usb_log_error("Could not create DDF function node.\n");
+		return ENOMEM;
+	}
+	
+	fun->ops = &usb_generic_hid_ops;
+	fun->driver_data = hid_dev;
+
+	int rc = ddf_fun_bind(fun);
+	if (rc != EOK) {
+		usb_log_error("Could not bind DDF function: %s.\n",
+		    str_error(rc));
+		ddf_fun_destroy(fun);
+		return rc;
+	}
+	
+	usb_log_debug("HID function created. Handle: %" PRIun "\n", fun->handle);
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+int usb_generic_hid_init(usb_hid_dev_t *hid_dev, void **data)
+{
+	if (hid_dev == NULL) {
+		return EINVAL;
+	}
+	
+	return usb_generic_hid_create_function(hid_dev);
+}
+
+/*----------------------------------------------------------------------------*/
+
+bool usb_generic_hid_polling_callback(usb_hid_dev_t *hid_dev, void *data, 
+    uint8_t *buffer, size_t buffer_size)
+{
+	usb_log_debug2("usb_hid_polling_callback(%p, %p, %zu)\n",
+	    hid_dev, buffer, buffer_size);
+	usb_debug_str_buffer(buffer, buffer_size, 0);
+	return true;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/generic/hiddev.h
===================================================================
--- uspace/drv/usbhid/generic/hiddev.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/generic/hiddev.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB HID driver API.
+ */
+
+#ifndef USB_HID_HIDDDEV_H_
+#define USB_HID_HIDDDEV_H_
+
+#include <usb/dev/driver.h>
+
+struct usb_hid_dev;
+
+usb_endpoint_description_t usb_hid_generic_poll_endpoint_description;
+
+const char *HID_GENERIC_FUN_NAME;
+const char *HID_GENERIC_CLASS_NAME;
+
+/*----------------------------------------------------------------------------*/
+
+int usb_generic_hid_init(struct usb_hid_dev *hid_dev, void **data);
+
+bool usb_generic_hid_polling_callback(struct usb_hid_dev *hid_dev, void *data,
+    uint8_t *buffer, size_t buffer_size);
+
+#endif // USB_HID_HIDDDEV_H_
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/kbd.h
===================================================================
--- uspace/drv/usbhid/kbd.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/kbd.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,5 @@
+/*
+ * Dummy file because of shared layout sources.
+ *
+ * Do not delete.
+ */
Index: uspace/drv/usbhid/kbd/conv.c
===================================================================
--- uspace/drv/usbhid/kbd/conv.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/kbd/conv.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB scancode parser.
+ */
+
+#include <io/keycode.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <usb/debug.h>
+#include "conv.h"
+
+/**
+ * Mapping between USB HID key codes (from HID Usage Tables) and corresponding
+ * HelenOS key codes.
+ */
+static int scanmap_simple[255] = {
+
+//	[0x29] = KC_BACKTICK,
+
+//	[0x02] = KC_1,
+//	[0x03] = KC_2,
+	[0x04] = KC_A,
+	[0x05] = KC_B,
+	[0x06] = KC_C,
+	[0x07] = KC_D,
+	[0x08] = KC_E,
+	[0x09] = KC_F,
+	[0x0a] = KC_G,
+	[0x0b] = KC_H,
+	[0x0c] = KC_I,
+	[0x0d] = KC_J,
+	[0x0e] = KC_K,
+	[0x0f] = KC_L,
+	[0x10] = KC_M,
+	[0x11] = KC_N,
+	[0x12] = KC_O,
+	[0x13] = KC_P,
+	[0x14] = KC_Q,
+	[0x15] = KC_R,
+	[0x16] = KC_S,
+	[0x17] = KC_T,
+	[0x18] = KC_U,
+	[0x19] = KC_V,
+	[0x1a] = KC_W,
+	[0x1b] = KC_X,
+	[0x1c] = KC_Y,
+	[0x1d] = KC_Z,
+
+	[0x1e] = KC_1,
+	[0x1f] = KC_2,
+	[0x20] = KC_3,
+	[0x21] = KC_4,
+	[0x22] = KC_5,
+	[0x23] = KC_6,
+	[0x24] = KC_7,
+	[0x25] = KC_8,
+	[0x26] = KC_9,
+	[0x27] = KC_0,
+	
+	[0x28] = KC_ENTER,
+	[0x29] = KC_ESCAPE,
+	[0x2a] = KC_BACKSPACE,
+	[0x2b] = KC_TAB,
+	[0x2c] = KC_SPACE,
+
+	[0x2d] = KC_MINUS,  // same as DASH? (- or _)
+	[0x2e] = KC_EQUALS,
+	[0x2f] = KC_LBRACKET,
+	[0x30] = KC_RBRACKET,
+	[0x31] = KC_BACKSLASH,
+	//[0x32] = KC_,	// TODO: HASH??? maybe same as 0x31 - backslash
+	[0x32] = KC_BACKSLASH,
+	[0x33] = KC_SEMICOLON,
+	[0x34] = KC_QUOTE,  // same as APOSTROPHE? (')
+	[0x35] = KC_BACKTICK,  // same as GRAVE ACCENT?? (`)
+	[0x36] = KC_COMMA,
+	[0x37] = KC_PERIOD,
+	[0x38] = KC_SLASH,
+
+	[0x39] = KC_CAPS_LOCK,
+	
+	[0x3a] = KC_F1,
+	[0x3b] = KC_F2,
+	[0x3c] = KC_F3,
+	[0x3d] = KC_F4,
+	[0x3e] = KC_F5,
+	[0x3f] = KC_F6,
+	[0x40] = KC_F7,
+	[0x41] = KC_F8,
+	[0x42] = KC_F9,
+	[0x43] = KC_F10,
+	[0x44] = KC_F11,
+	[0x45] = KC_F12,
+	
+	[0x46] = KC_PRTSCR,
+	[0x47] = KC_SCROLL_LOCK,
+	[0x48] = KC_PAUSE,
+	[0x49] = KC_INSERT,
+	[0x4a] = KC_HOME,
+	[0x4b] = KC_PAGE_UP,
+	[0x4c] = KC_DELETE,
+	[0x4d] = KC_END,
+	[0x4e] = KC_PAGE_DOWN,
+	[0x4f] = KC_RIGHT,
+	[0x50] = KC_LEFT,
+	[0x51] = KC_DOWN,
+	[0x52] = KC_UP,
+	
+	//[0x64] = // some funny key
+	
+	[0xe0] = KC_LCTRL,
+	[0xe1] = KC_LSHIFT,
+	[0xe2] = KC_LALT,
+	//[0xe3] = KC_L	// TODO: left GUI
+	[0xe4] = KC_RCTRL,
+	[0xe5] = KC_RSHIFT,
+	[0xe6] = KC_RALT,
+	//[0xe7] = KC_R	// TODO: right GUI
+	
+	[0x53] = KC_NUM_LOCK,
+	[0x54] = KC_NSLASH,
+	[0x55] = KC_NTIMES,
+	[0x56] = KC_NMINUS,
+	[0x57] = KC_NPLUS,
+	[0x58] = KC_NENTER,
+	[0x59] = KC_N1,
+	[0x5a] = KC_N2,
+	[0x5b] = KC_N3,
+	[0x5c] = KC_N4,
+	[0x5d] = KC_N5,
+	[0x5e] = KC_N6,
+	[0x5f] = KC_N7,
+	[0x60] = KC_N8,
+	[0x61] = KC_N9,
+	[0x62] = KC_N0,
+	[0x63] = KC_NPERIOD
+	
+};
+
+/**
+ * Translate USB HID key codes (from HID Usage Tables) to generic key codes
+ * recognized by HelenOS.
+ *
+ * @param scancode USB HID key code (from HID Usage Tables).
+ * 
+ * @retval HelenOS key code corresponding to the given USB HID key code.
+ */
+unsigned int usbhid_parse_scancode(int scancode)
+{
+	unsigned int key;
+	int *map = scanmap_simple;
+	size_t map_length = sizeof(scanmap_simple) / sizeof(int);
+
+	if ((scancode < 0) || ((size_t) scancode >= map_length))
+		return -1;
+
+	key = map[scancode];
+	
+	return key;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/kbd/conv.h
===================================================================
--- uspace/drv/usbhid/kbd/conv.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/kbd/conv.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB scancode parser.
+ */
+
+#ifndef USB_HID_CONV_H_
+#define USB_HID_CONV_H_
+
+unsigned int usbhid_parse_scancode(int scancode);
+
+#endif /* USB_HID_CONV_H_ */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/kbd/kbddev.c
===================================================================
--- uspace/drv/usbhid/kbd/kbddev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/kbd/kbddev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,969 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/**
+ * @file
+ * USB HID keyboard device structure and API.
+ */
+
+#include <errno.h>
+#include <str_error.h>
+#include <stdio.h>
+
+#include <io/keycode.h>
+#include <ipc/kbd.h>
+#include <async.h>
+#include <fibril.h>
+#include <fibril_synch.h>
+
+#include <usb/usb.h>
+#include <usb/dev/dp.h>
+#include <usb/dev/request.h>
+#include <usb/hid/hid.h>
+#include <usb/dev/pipes.h>
+#include <usb/debug.h>
+#include <usb/hid/hidparser.h>
+#include <usb/classes/classes.h>
+#include <usb/hid/usages/core.h>
+#include <usb/hid/request.h>
+#include <usb/hid/hidreport.h>
+#include <usb/hid/usages/led.h>
+
+#include <usb/dev/driver.h>
+
+#include "kbddev.h"
+
+#include "layout.h"
+#include "conv.h"
+#include "kbdrepeat.h"
+
+#include "../usbhid.h"
+
+/*----------------------------------------------------------------------------*/
+/** Default modifiers when the keyboard is initialized. */
+static const unsigned DEFAULT_ACTIVE_MODS = KM_NUM_LOCK;
+
+static const uint8_t ERROR_ROLLOVER = 1;
+
+/** Default idle rate for keyboards. */
+static const uint8_t IDLE_RATE = 0;
+
+/** Delay before a pressed key starts auto-repeating. */
+static const unsigned int DEFAULT_DELAY_BEFORE_FIRST_REPEAT = 500 * 1000;
+
+/** Delay between two repeats of a pressed key when auto-repeating. */
+static const unsigned int DEFAULT_REPEAT_DELAY = 50 * 1000;
+
+/*----------------------------------------------------------------------------*/
+
+/** Keyboard polling endpoint description for boot protocol class. */
+usb_endpoint_description_t usb_hid_kbd_poll_endpoint_description = {
+	.transfer_type = USB_TRANSFER_INTERRUPT,
+	.direction = USB_DIRECTION_IN,
+	.interface_class = USB_CLASS_HID,
+	.interface_subclass = USB_HID_SUBCLASS_BOOT,
+	.interface_protocol = USB_HID_PROTOCOL_KEYBOARD,
+	.flags = 0
+};
+
+const char *HID_KBD_FUN_NAME = "keyboard";
+const char *HID_KBD_CLASS_NAME = "keyboard";
+
+/*----------------------------------------------------------------------------*/
+
+enum {
+	USB_KBD_BOOT_REPORT_DESCRIPTOR_SIZE = 63
+};
+
+static const uint8_t USB_KBD_BOOT_REPORT_DESCRIPTOR[
+    USB_KBD_BOOT_REPORT_DESCRIPTOR_SIZE] = {
+        0x05, 0x01,  // Usage Page (Generic Desktop),
+        0x09, 0x06,  // Usage (Keyboard),
+        0xA1, 0x01,  // Collection (Application),
+        0x75, 0x01,  //   Report Size (1),
+        0x95, 0x08,  //   Report Count (8),       
+        0x05, 0x07,  //   Usage Page (Key Codes);
+        0x19, 0xE0,  //   Usage Minimum (224),
+        0x29, 0xE7,  //   Usage Maximum (231),
+        0x15, 0x00,  //   Logical Minimum (0),
+        0x25, 0x01,  //   Logical Maximum (1),
+        0x81, 0x02,  //   Input (Data, Variable, Absolute),   ; Modifier byte
+	0x95, 0x01,  //   Report Count (1),
+        0x75, 0x08,  //   Report Size (8),
+        0x81, 0x01,  //   Input (Constant),                   ; Reserved byte
+        0x95, 0x05,  //   Report Count (5),
+        0x75, 0x01,  //   Report Size (1),
+        0x05, 0x08,  //   Usage Page (Page# for LEDs),
+        0x19, 0x01,  //   Usage Minimum (1),
+        0x29, 0x05,  //   Usage Maxmimum (5),
+        0x91, 0x02,  //   Output (Data, Variable, Absolute),  ; LED report
+        0x95, 0x01,  //   Report Count (1),
+        0x75, 0x03,  //   Report Size (3),
+        0x91, 0x01,  //   Output (Constant),              ; LED report padding
+        0x95, 0x06,  //   Report Count (6),
+        0x75, 0x08,  //   Report Size (8),
+        0x15, 0x00,  //   Logical Minimum (0),
+        0x25, 0xff,  //   Logical Maximum (255),
+        0x05, 0x07,  //   Usage Page (Key Codes),
+        0x19, 0x00,  //   Usage Minimum (0),
+        0x29, 0xff,  //   Usage Maximum (255),
+        0x81, 0x00,  //   Input (Data, Array),            ; Key arrays (6 bytes)
+        0xC0           // End Collection
+
+};
+
+/*----------------------------------------------------------------------------*/
+
+typedef enum usb_kbd_flags {
+	USB_KBD_STATUS_UNINITIALIZED = 0,
+	USB_KBD_STATUS_INITIALIZED = 1,
+	USB_KBD_STATUS_TO_DESTROY = -1
+} usb_kbd_flags;
+
+/*----------------------------------------------------------------------------*/
+/* Keyboard layouts                                                           */
+/*----------------------------------------------------------------------------*/
+
+#define NUM_LAYOUTS 3
+
+/** Keyboard layout map. */
+static layout_op_t *layout[NUM_LAYOUTS] = {
+	&us_qwerty_op,
+	&us_dvorak_op,
+	&cz_op
+};
+
+static int active_layout = 0;
+
+/*----------------------------------------------------------------------------*/
+/* IPC method handler                                                         */
+/*----------------------------------------------------------------------------*/
+
+static void default_connection_handler(ddf_fun_t *, ipc_callid_t, ipc_call_t *);
+
+/** 
+ * Default handler for IPC methods not handled by DDF.
+ *
+ * Currently recognizes only one method (IPC_M_CONNECT_TO_ME), in which case it
+ * assumes the caller is the console and thus it stores IPC phone to it for 
+ * later use by the driver to notify about key events.
+ *
+ * @param fun Device function handling the call.
+ * @param icallid Call id.
+ * @param icall Call data.
+ */
+static void default_connection_handler(ddf_fun_t *fun,
+    ipc_callid_t icallid, ipc_call_t *icall)
+{
+	sysarg_t method = IPC_GET_IMETHOD(*icall);
+	
+	usb_kbd_t *kbd_dev = (usb_kbd_t *)fun->driver_data;
+	if (kbd_dev == NULL) {
+		usb_log_debug("default_connection_handler: "
+		    "Missing parameter.\n");
+		async_answer_0(icallid, EINVAL);
+		return;
+	}
+
+	if (method == IPC_M_CONNECT_TO_ME) {
+		int callback = IPC_GET_ARG5(*icall);
+
+		if (kbd_dev->console_phone != -1) {
+			usb_log_debug("default_connection_handler: "
+			    "console phone already set\n");
+			async_answer_0(icallid, ELIMIT);
+			return;
+		}
+
+		kbd_dev->console_phone = callback;
+		
+		usb_log_debug("default_connection_handler: OK\n");
+		async_answer_0(icallid, EOK);
+		return;
+	}
+	
+	usb_log_debug("default_connection_handler: Wrong function.\n");
+	async_answer_0(icallid, EINVAL);
+}
+
+/*----------------------------------------------------------------------------*/
+/* Key processing functions                                                   */
+/*----------------------------------------------------------------------------*/
+/**
+ * Handles turning of LED lights on and off.
+ *
+ * In case of USB keyboards, the LEDs are handled in the driver, not in the 
+ * device. When there should be a change (lock key was pressed), the driver
+ * uses a Set_Report request sent to the device to set the state of the LEDs.
+ *
+ * This functions sets the LED lights according to current settings of modifiers
+ * kept in the keyboard device structure.
+ *
+ * @param kbd_dev Keyboard device structure.
+ */
+static void usb_kbd_set_led(usb_hid_dev_t *hid_dev, usb_kbd_t *kbd_dev) 
+{
+	if (kbd_dev->output_size == 0) {
+		return;
+	}
+
+	/* Reset the LED data. */
+	memset(kbd_dev->led_data, 0, kbd_dev->led_output_size * sizeof(int32_t));
+	usb_log_debug("Creating output report:\n");
+
+	usb_hid_report_field_t *field = usb_hid_report_get_sibling(
+	    hid_dev->report, NULL, kbd_dev->led_path, 
+	    USB_HID_PATH_COMPARE_END | USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY,
+	    USB_HID_REPORT_TYPE_OUTPUT);
+	
+	while (field != NULL) {		
+		
+		if ((field->usage == USB_HID_LED_NUM_LOCK) 
+		    && (kbd_dev->mods & KM_NUM_LOCK)){
+			field->value = 1;
+		}
+
+		if ((field->usage == USB_HID_LED_CAPS_LOCK) 
+		    && (kbd_dev->mods & KM_CAPS_LOCK)){
+			field->value = 1;
+		}
+
+		if ((field->usage == USB_HID_LED_SCROLL_LOCK) 
+		    && (kbd_dev->mods & KM_SCROLL_LOCK)){
+			field->value = 1;
+		}
+		
+		field = usb_hid_report_get_sibling(hid_dev->report, field,
+		    kbd_dev->led_path,  
+	    	USB_HID_PATH_COMPARE_END | USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY,
+			USB_HID_REPORT_TYPE_OUTPUT);
+	}
+	
+	// TODO: what about the Report ID?
+	int rc = usb_hid_report_output_translate(hid_dev->report, 0,
+	    kbd_dev->output_buffer, kbd_dev->output_size);
+	
+	if (rc != EOK) {
+		usb_log_warning("Error translating LED output to output report"
+		    ".\n");
+		return;
+	}
+	
+	usb_log_debug("Output report buffer: %s\n", 
+	    usb_debug_str_buffer(kbd_dev->output_buffer, kbd_dev->output_size, 
+	        0));
+	
+	usbhid_req_set_report(&hid_dev->usb_dev->ctrl_pipe, 
+	    hid_dev->usb_dev->interface_no, USB_HID_REPORT_TYPE_OUTPUT, 
+	    kbd_dev->output_buffer, kbd_dev->output_size);
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Processes key events.
+ *
+ * @note This function was copied from AT keyboard driver and modified to suit
+ *       USB keyboard.
+ *
+ * @note Lock keys are not sent to the console, as they are completely handled
+ *       in the driver. It may, however, be required later that the driver
+ *       sends also these keys to application (otherwise it cannot use those
+ *       keys at all).
+ * 
+ * @param kbd_dev Keyboard device structure.
+ * @param type Type of the event (press / release). Recognized values: 
+ *             KEY_PRESS, KEY_RELEASE
+ * @param key Key code of the key according to HID Usage Tables.
+ */
+void usb_kbd_push_ev(usb_hid_dev_t *hid_dev, usb_kbd_t *kbd_dev, int type, 
+    unsigned int key)
+{
+	console_event_t ev;
+	unsigned mod_mask;
+
+	/*
+	 * These parts are copy-pasted from the AT keyboard driver.
+	 *
+	 * They definitely require some refactoring, but will keep it for later
+	 * when the console and keyboard system is changed in HelenOS.
+	 */
+	switch (key) {
+	case KC_LCTRL: mod_mask = KM_LCTRL; break;
+	case KC_RCTRL: mod_mask = KM_RCTRL; break;
+	case KC_LSHIFT: mod_mask = KM_LSHIFT; break;
+	case KC_RSHIFT: mod_mask = KM_RSHIFT; break;
+	case KC_LALT: mod_mask = KM_LALT; break;
+	case KC_RALT: mod_mask = KM_RALT; break;
+	default: mod_mask = 0; break;
+	}
+
+	if (mod_mask != 0) {
+		if (type == KEY_PRESS)
+			kbd_dev->mods = kbd_dev->mods | mod_mask;
+		else
+			kbd_dev->mods = kbd_dev->mods & ~mod_mask;
+	}
+
+	switch (key) {
+	case KC_CAPS_LOCK: mod_mask = KM_CAPS_LOCK; break;
+	case KC_NUM_LOCK: mod_mask = KM_NUM_LOCK; break;
+	case KC_SCROLL_LOCK: mod_mask = KM_SCROLL_LOCK; break;
+	default: mod_mask = 0; break;
+	}
+
+	if (mod_mask != 0) {
+		if (type == KEY_PRESS) {
+			/*
+			 * Only change lock state on transition from released
+			 * to pressed. This prevents autorepeat from messing
+			 * up the lock state.
+			 */
+			unsigned int locks_old = kbd_dev->lock_keys;
+			
+			kbd_dev->mods = 
+			    kbd_dev->mods ^ (mod_mask & ~kbd_dev->lock_keys);
+			kbd_dev->lock_keys = kbd_dev->lock_keys | mod_mask;
+
+			/* Update keyboard lock indicator lights. */
+			if (kbd_dev->lock_keys != locks_old 
+			    && hid_dev != NULL) { // ugly hack
+				usb_kbd_set_led(hid_dev, kbd_dev);
+			}
+		} else {
+			kbd_dev->lock_keys = kbd_dev->lock_keys & ~mod_mask;
+		}
+	}
+
+	if (key == KC_CAPS_LOCK || key == KC_NUM_LOCK || key == KC_SCROLL_LOCK) {
+		// do not send anything to the console, this is our business
+		return;
+	}
+	
+	if (type == KEY_PRESS && (kbd_dev->mods & KM_LCTRL) && key == KC_F1) {
+		active_layout = 0;
+		layout[active_layout]->reset();
+		return;
+	}
+
+	if (type == KEY_PRESS && (kbd_dev->mods & KM_LCTRL) && key == KC_F2) {
+		active_layout = 1;
+		layout[active_layout]->reset();
+		return;
+	}
+
+	if (type == KEY_PRESS && (kbd_dev->mods & KM_LCTRL) && key == KC_F3) {
+		active_layout = 2;
+		layout[active_layout]->reset();
+		return;
+	}
+	
+	ev.type = type;
+	ev.key = key;
+	ev.mods = kbd_dev->mods;
+
+	ev.c = layout[active_layout]->parse_ev(&ev);
+
+	usb_log_debug2("Sending key %d to the console\n", ev.key);
+	if (kbd_dev->console_phone < 0) {
+		usb_log_warning(
+		    "Connection to console not ready, key discarded.\n");
+		return;
+	}
+	
+	async_msg_4(kbd_dev->console_phone, KBD_EVENT, ev.type, ev.key, 
+	    ev.mods, ev.c);
+}
+
+/*----------------------------------------------------------------------------*/
+
+static inline int usb_kbd_is_lock(unsigned int key_code) 
+{
+	return (key_code == KC_NUM_LOCK
+	    || key_code == KC_SCROLL_LOCK
+	    || key_code == KC_CAPS_LOCK);
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Checks if some keys were pressed or released and generates key events.
+ *
+ * An event is created only when key is pressed or released. Besides handling
+ * the events (usb_kbd_push_ev()), the auto-repeat fibril is notified about
+ * key presses and releases (see usb_kbd_repeat_start() and 
+ * usb_kbd_repeat_stop()).
+ *
+ * @param kbd_dev Keyboard device structure.
+ * @param key_codes Parsed keyboard report - codes of currently pressed keys 
+ *                  according to HID Usage Tables.
+ * @param count Number of key codes in report (size of the report).
+ *
+ * @sa usb_kbd_push_ev(), usb_kbd_repeat_start(), usb_kbd_repeat_stop()
+ */
+static void usb_kbd_check_key_changes(usb_hid_dev_t *hid_dev, 
+    usb_kbd_t *kbd_dev)
+{
+	unsigned int key;
+	unsigned int i, j;
+	
+	/*
+	 * First of all, check if the kbd have reported phantom state.
+	 *
+	 * As there is no way to distinguish keys from modifiers, we do not have
+	 * a way to check that 'all keys report Error Rollover'. We thus check
+	 * if there is at least one such error and in such case we ignore the
+	 * whole input report.
+	 */
+	i = 0;
+	while (i < kbd_dev->key_count && kbd_dev->keys[i] != ERROR_ROLLOVER) {
+		++i;
+	}
+	if (i != kbd_dev->key_count) {
+		usb_log_debug("Phantom state occured.\n");
+		// phantom state, do nothing
+		return;
+	}
+	
+	/*
+	 * 1) Key releases
+	 */
+	for (j = 0; j < kbd_dev->key_count; ++j) {
+		// try to find the old key in the new key list
+		i = 0;
+		while (i < kbd_dev->key_count
+		    && kbd_dev->keys[i] != kbd_dev->keys_old[j]) {
+			++i;
+		}
+		
+		if (i == kbd_dev->key_count) {
+			// not found, i.e. the key was released
+			key = usbhid_parse_scancode(kbd_dev->keys_old[j]);
+			if (!usb_kbd_is_lock(key)) {
+				usb_kbd_repeat_stop(kbd_dev, key);
+			}
+			usb_kbd_push_ev(hid_dev, kbd_dev, KEY_RELEASE, key);
+			usb_log_debug2("Key released: %d\n", key);
+		} else {
+			// found, nothing happens
+		}
+	}
+	
+	/*
+	 * 1) Key presses
+	 */
+	for (i = 0; i < kbd_dev->key_count; ++i) {
+		// try to find the new key in the old key list
+		j = 0;
+		while (j < kbd_dev->key_count 
+		    && kbd_dev->keys_old[j] != kbd_dev->keys[i]) { 
+			++j;
+		}
+		
+		if (j == kbd_dev->key_count) {
+			// not found, i.e. new key pressed
+			key = usbhid_parse_scancode(kbd_dev->keys[i]);
+			usb_log_debug2("Key pressed: %d (keycode: %d)\n", key,
+			    kbd_dev->keys[i]);
+			if (!usb_kbd_is_lock(key)) {
+				usb_kbd_repeat_start(kbd_dev, key);
+			}
+			usb_kbd_push_ev(hid_dev, kbd_dev, KEY_PRESS, key);
+		} else {
+			// found, nothing happens
+		}
+	}
+	
+	memcpy(kbd_dev->keys_old, kbd_dev->keys, kbd_dev->key_count * 4);
+	
+	usb_log_debug2("New stored keys: ");
+	for (i = 0; i < kbd_dev->key_count; ++i) {
+		usb_log_debug2("%d ", kbd_dev->keys_old[i]);
+	}
+	usb_log_debug2("\n");
+}
+
+/*----------------------------------------------------------------------------*/
+/* General kbd functions                                                      */
+/*----------------------------------------------------------------------------*/
+/**
+ * Processes data received from the device in form of report.
+ *
+ * This function uses the HID report parser to translate the data received from
+ * the device into generic USB HID key codes and into generic modifiers bitmap.
+ * The parser then calls the given callback (usb_kbd_process_keycodes()).
+ *
+ * @note Currently, only the boot protocol is supported.
+ *
+ * @param kbd_dev Keyboard device structure (must be initialized).
+ * @param buffer Data from the keyboard (i.e. the report).
+ * @param actual_size Size of the data from keyboard (report size) in bytes.
+ *
+ * @sa usb_kbd_process_keycodes(), usb_hid_boot_keyboard_input_report(),
+ *     usb_hid_parse_report().
+ */
+static void usb_kbd_process_data(usb_hid_dev_t *hid_dev, usb_kbd_t *kbd_dev,
+                                 uint8_t *buffer, size_t actual_size)
+{
+	assert(hid_dev->report != NULL);
+	assert(hid_dev != NULL);
+	assert(kbd_dev != NULL);
+
+	usb_log_debug("Calling usb_hid_parse_report() with "
+	    "buffer %s\n", usb_debug_str_buffer(buffer, actual_size, 0));
+	
+	usb_hid_report_path_t *path = usb_hid_report_path();
+	usb_hid_report_path_append_item(path, USB_HIDUT_PAGE_KEYBOARD, 0);
+
+	uint8_t report_id;
+	int rc = usb_hid_parse_report(hid_dev->report, buffer, actual_size, 
+	    &report_id);
+	
+	if (rc != EOK) {
+		usb_log_warning("Error in usb_hid_parse_report():"
+		    "%s\n", str_error(rc));
+	}
+	
+	usb_hid_report_path_set_report_id (path, report_id);
+	
+	// fill in the currently pressed keys
+	
+	usb_hid_report_field_t *field = usb_hid_report_get_sibling(
+	    hid_dev->report, NULL, path, 
+	    USB_HID_PATH_COMPARE_END | USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY, 
+	    USB_HID_REPORT_TYPE_INPUT);
+	unsigned i = 0;
+	
+	while (field != NULL) {
+		usb_log_debug2("FIELD (%p) - VALUE(%d) USAGE(%u)\n", 
+		    field, field->value, field->usage);
+		
+		assert(i < kbd_dev->key_count);
+		
+		// save the key usage
+		if (field->value != 0) {
+			kbd_dev->keys[i] = field->usage;
+		}
+		else {
+			kbd_dev->keys[i] = 0;
+		}
+		usb_log_debug2("Saved %u. key usage %d\n", i, kbd_dev->keys[i]);
+		
+		++i;
+		field = usb_hid_report_get_sibling(hid_dev->report, field, path, 
+		    USB_HID_PATH_COMPARE_END 
+		    | USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY, 
+		    USB_HID_REPORT_TYPE_INPUT);
+	}
+	
+	usb_hid_report_path_free(path);
+	
+	usb_kbd_check_key_changes(hid_dev, kbd_dev);
+}
+
+/*----------------------------------------------------------------------------*/
+/* HID/KBD structure manipulation                                             */
+/*----------------------------------------------------------------------------*/
+
+static void usb_kbd_mark_unusable(usb_kbd_t *kbd_dev)
+{
+	kbd_dev->initialized = USB_KBD_STATUS_TO_DESTROY;
+}
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * Creates a new USB/HID keyboard structure.
+ *
+ * The structure returned by this function is not initialized. Use 
+ * usb_kbd_init() to initialize it prior to polling.
+ *
+ * @return New uninitialized structure for representing a USB/HID keyboard or
+ *         NULL if not successful (memory error).
+ */
+static usb_kbd_t *usb_kbd_new(void)
+{
+	usb_kbd_t *kbd_dev = 
+	    (usb_kbd_t *)calloc(1, sizeof(usb_kbd_t));
+
+	if (kbd_dev == NULL) {
+		usb_log_fatal("No memory!\n");
+		return NULL;
+	}
+	
+	kbd_dev->console_phone = -1;
+	kbd_dev->initialized = USB_KBD_STATUS_UNINITIALIZED;
+	
+	return kbd_dev;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_kbd_create_function(usb_hid_dev_t *hid_dev, usb_kbd_t *kbd_dev)
+{
+	assert(hid_dev != NULL);
+	assert(hid_dev->usb_dev != NULL);
+	assert(kbd_dev != NULL);
+	
+	/* Create the function exposed under /dev/devices. */
+	usb_log_debug("Creating DDF function %s...\n", HID_KBD_FUN_NAME);
+	ddf_fun_t *fun = ddf_fun_create(hid_dev->usb_dev->ddf_dev, fun_exposed, 
+	    HID_KBD_FUN_NAME);
+	if (fun == NULL) {
+		usb_log_error("Could not create DDF function node.\n");
+		return ENOMEM;
+	}
+	
+	/*
+	 * Store the initialized HID device and HID ops
+	 * to the DDF function.
+	 */
+	fun->ops = &kbd_dev->ops;
+	fun->driver_data = kbd_dev;
+
+	int rc = ddf_fun_bind(fun);
+	if (rc != EOK) {
+		usb_log_error("Could not bind DDF function: %s.\n",
+		    str_error(rc));
+		ddf_fun_destroy(fun);
+		return rc;
+	}
+	
+	usb_log_debug("%s function created. Handle: %" PRIun "\n",
+	    HID_KBD_FUN_NAME, fun->handle);
+	
+	usb_log_debug("Adding DDF function to class %s...\n", 
+	    HID_KBD_CLASS_NAME);
+	rc = ddf_fun_add_to_class(fun, HID_KBD_CLASS_NAME);
+	if (rc != EOK) {
+		usb_log_error(
+		    "Could not add DDF function to class %s: %s.\n",
+		    HID_KBD_CLASS_NAME, str_error(rc));
+		ddf_fun_destroy(fun);
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+/* API functions                                                              */
+/*----------------------------------------------------------------------------*/
+/**
+ * Initialization of the USB/HID keyboard structure.
+ *
+ * This functions initializes required structures from the device's descriptors.
+ *
+ * During initialization, the keyboard is switched into boot protocol, the idle
+ * rate is set to 0 (infinity), resulting in the keyboard only reporting event
+ * when a key is pressed or released. Finally, the LED lights are turned on 
+ * according to the default setup of lock keys.
+ *
+ * @note By default, the keyboards is initialized with Num Lock turned on and 
+ *       other locks turned off.
+ *
+ * @param kbd_dev Keyboard device structure to be initialized.
+ * @param dev DDF device structure of the keyboard.
+ *
+ * @retval EOK if successful.
+ * @retval EINVAL if some parameter is not given.
+ * @return Other value inherited from function usbhid_dev_init().
+ */
+int usb_kbd_init(usb_hid_dev_t *hid_dev, void **data)
+{
+	usb_log_debug("Initializing HID/KBD structure...\n");
+	
+	if (hid_dev == NULL) {
+		usb_log_error("Failed to init keyboard structure: no structure"
+		    " given.\n");
+		return EINVAL;
+	}
+	
+	usb_kbd_t *kbd_dev = usb_kbd_new();
+	if (kbd_dev == NULL) {
+		usb_log_error("Error while creating USB/HID KBD device "
+		    "structure.\n");
+		return ENOMEM;  // TODO: some other code??
+	}
+	
+	/*
+	 * TODO: make more general
+	 */
+	usb_hid_report_path_t *path = usb_hid_report_path();
+	usb_hid_report_path_append_item(path, USB_HIDUT_PAGE_KEYBOARD, 0);
+	
+	usb_hid_report_path_set_report_id(path, 0);
+	
+	kbd_dev->key_count = usb_hid_report_size(
+	    hid_dev->report, 0, USB_HID_REPORT_TYPE_INPUT); 
+	usb_hid_report_path_free(path);
+	
+	usb_log_debug("Size of the input report: %zu\n", kbd_dev->key_count);
+	
+	kbd_dev->keys = (int32_t *)calloc(kbd_dev->key_count, sizeof(int32_t));
+	
+	if (kbd_dev->keys == NULL) {
+		usb_log_fatal("No memory!\n");
+		free(kbd_dev);
+		return ENOMEM;
+	}
+	
+	kbd_dev->keys_old = 
+		(int32_t *)calloc(kbd_dev->key_count, sizeof(int32_t));
+	
+	if (kbd_dev->keys_old == NULL) {
+		usb_log_fatal("No memory!\n");
+		free(kbd_dev->keys);
+		free(kbd_dev);
+		return ENOMEM;
+	}
+	
+	/*
+	 * Output report
+	 */
+	kbd_dev->output_size = 0;
+	kbd_dev->output_buffer = usb_hid_report_output(hid_dev->report, 
+	    &kbd_dev->output_size, 0);
+	if (kbd_dev->output_buffer == NULL) {
+		usb_log_warning("Error creating output report buffer.\n");
+		free(kbd_dev->keys);
+		return ENOMEM;
+	}
+	
+	usb_log_debug("Output buffer size: %zu\n", kbd_dev->output_size);
+	
+	kbd_dev->led_path = usb_hid_report_path();
+	usb_hid_report_path_append_item(
+	    kbd_dev->led_path, USB_HIDUT_PAGE_LED, 0);
+	
+	kbd_dev->led_output_size = usb_hid_report_size(hid_dev->report, 
+	    0, USB_HID_REPORT_TYPE_OUTPUT);
+	
+	usb_log_debug("Output report size (in items): %zu\n", 
+	    kbd_dev->led_output_size);
+	
+	kbd_dev->led_data = (int32_t *)calloc(
+	    kbd_dev->led_output_size, sizeof(int32_t));
+	
+	if (kbd_dev->led_data == NULL) {
+		usb_log_warning("Error creating buffer for LED output report."
+		    "\n");
+		free(kbd_dev->keys);
+		usb_hid_report_output_free(kbd_dev->output_buffer);
+		free(kbd_dev);
+		return ENOMEM;
+	}
+	
+	/*
+	 * Modifiers and locks
+	 */	
+	kbd_dev->modifiers = 0;
+	kbd_dev->mods = DEFAULT_ACTIVE_MODS;
+	kbd_dev->lock_keys = 0;
+	
+	/*
+	 * Autorepeat
+	 */	
+	kbd_dev->repeat.key_new = 0;
+	kbd_dev->repeat.key_repeated = 0;
+	kbd_dev->repeat.delay_before = DEFAULT_DELAY_BEFORE_FIRST_REPEAT;
+	kbd_dev->repeat.delay_between = DEFAULT_REPEAT_DELAY;
+	
+	kbd_dev->repeat_mtx = (fibril_mutex_t *)(
+	    malloc(sizeof(fibril_mutex_t)));
+	if (kbd_dev->repeat_mtx == NULL) {
+		usb_log_fatal("No memory!\n");
+		free(kbd_dev->keys);
+		usb_hid_report_output_free(kbd_dev->output_buffer);
+		free(kbd_dev);
+		return ENOMEM;
+	}
+	
+	fibril_mutex_initialize(kbd_dev->repeat_mtx);
+	
+	// save the KBD device structure into the HID device structure
+	*data = kbd_dev;
+	
+	// set handler for incoming calls
+	kbd_dev->ops.default_handler = default_connection_handler;
+	
+	/*
+	 * Set LEDs according to initial setup.
+	 * Set Idle rate
+	 */
+	usb_kbd_set_led(hid_dev, kbd_dev);
+	
+	usbhid_req_set_idle(&hid_dev->usb_dev->ctrl_pipe, 
+	    hid_dev->usb_dev->interface_no, IDLE_RATE);
+	
+	/*
+	 * Create new fibril for auto-repeat
+	 */
+	fid_t fid = fibril_create(usb_kbd_repeat_fibril, kbd_dev);
+	if (fid == 0) {
+		usb_log_error("Failed to start fibril for KBD auto-repeat");
+		return ENOMEM;
+	}
+	fibril_add_ready(fid);
+	
+	kbd_dev->initialized = USB_KBD_STATUS_INITIALIZED;
+	usb_log_debug("HID/KBD device structure initialized.\n");
+	
+	usb_log_debug("Creating KBD function...\n");
+	int rc = usb_kbd_create_function(hid_dev, kbd_dev);
+	if (rc != EOK) {
+		usb_kbd_free(&kbd_dev);
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+bool usb_kbd_polling_callback(usb_hid_dev_t *hid_dev, void *data, 
+     uint8_t *buffer, size_t buffer_size)
+{
+	if (hid_dev == NULL || buffer == NULL || data == NULL) {
+		// do not continue polling (???)
+		return false;
+	}
+	
+	usb_kbd_t *kbd_dev = (usb_kbd_t *)data;
+	assert(kbd_dev != NULL);
+	
+	// TODO: add return value from this function
+	usb_kbd_process_data(hid_dev, kbd_dev, buffer, buffer_size);
+	
+	return true;
+}
+
+/*----------------------------------------------------------------------------*/
+
+int usb_kbd_is_initialized(const usb_kbd_t *kbd_dev)
+{
+	return (kbd_dev->initialized == USB_KBD_STATUS_INITIALIZED);
+}
+
+/*----------------------------------------------------------------------------*/
+
+int usb_kbd_is_ready_to_destroy(const usb_kbd_t *kbd_dev)
+{
+	return (kbd_dev->initialized == USB_KBD_STATUS_TO_DESTROY);
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Properly destroys the USB/HID keyboard structure.
+ *
+ * @param kbd_dev Pointer to the structure to be destroyed.
+ */
+void usb_kbd_free(usb_kbd_t **kbd_dev)
+{
+	if (kbd_dev == NULL || *kbd_dev == NULL) {
+		return;
+	}
+	
+	// hangup phone to the console
+	async_hangup((*kbd_dev)->console_phone);
+	
+	if ((*kbd_dev)->repeat_mtx != NULL) {
+		//assert(!fibril_mutex_is_locked((*kbd_dev)->repeat_mtx));
+		while (fibril_mutex_is_locked((*kbd_dev)->repeat_mtx)) {}
+		free((*kbd_dev)->repeat_mtx);
+	}
+	
+	// free all buffers
+	if ((*kbd_dev)->keys != NULL) {
+		free((*kbd_dev)->keys);
+	}
+	if ((*kbd_dev)->keys_old != NULL) {
+		free((*kbd_dev)->keys_old);
+	}
+	if ((*kbd_dev)->led_data != NULL) {
+		free((*kbd_dev)->led_data);
+	}
+	if ((*kbd_dev)->led_path != NULL) {
+		usb_hid_report_path_free((*kbd_dev)->led_path);
+	}
+	if ((*kbd_dev)->output_buffer != NULL) {
+		usb_hid_report_output_free((*kbd_dev)->output_buffer);
+	}
+
+	free(*kbd_dev);
+	*kbd_dev = NULL;
+}
+
+/*----------------------------------------------------------------------------*/
+
+void usb_kbd_deinit(usb_hid_dev_t *hid_dev, void *data)
+{
+	if (hid_dev == NULL) {
+		return;
+	}
+	
+	if (data != NULL) {
+		usb_kbd_t *kbd_dev = (usb_kbd_t *)data;
+		if (usb_kbd_is_initialized(kbd_dev)) {
+			usb_kbd_mark_unusable(kbd_dev);
+		} else {
+			usb_kbd_free(&kbd_dev);
+		}
+	}
+}
+
+/*----------------------------------------------------------------------------*/
+
+int usb_kbd_set_boot_protocol(usb_hid_dev_t *hid_dev)
+{
+	int rc = usb_hid_parse_report_descriptor(hid_dev->report, 
+	    USB_KBD_BOOT_REPORT_DESCRIPTOR, 
+	    USB_KBD_BOOT_REPORT_DESCRIPTOR_SIZE);
+	
+	if (rc != EOK) {
+		usb_log_error("Failed to parse boot report descriptor: %s\n",
+		    str_error(rc));
+		return rc;
+	}
+	
+	rc = usbhid_req_set_protocol(&hid_dev->usb_dev->ctrl_pipe, 
+	    hid_dev->usb_dev->interface_no, USB_HID_PROTOCOL_BOOT);
+	
+	if (rc != EOK) {
+		usb_log_warning("Failed to set boot protocol to the device: "
+		    "%s\n", str_error(rc));
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/kbd/kbddev.h
===================================================================
--- uspace/drv/usbhid/kbd/kbddev.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/kbd/kbddev.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB HID keyboard device structure and API.
+ */
+
+#ifndef USB_HID_KBDDEV_H_
+#define USB_HID_KBDDEV_H_
+
+#include <stdint.h>
+
+#include <fibril_synch.h>
+
+#include <usb/hid/hid.h>
+#include <usb/hid/hidparser.h>
+#include <ddf/driver.h>
+#include <usb/dev/pipes.h>
+#include <usb/dev/driver.h>
+
+#include "kbdrepeat.h"
+
+struct usb_hid_dev;
+
+/*----------------------------------------------------------------------------*/
+/**
+ * USB/HID keyboard device type.
+ *
+ * Holds a reference to generic USB/HID device structure and keyboard-specific
+ * data, such as currently pressed keys, modifiers and lock keys.
+ *
+ * Also holds a IPC phone to the console (since there is now no other way to 
+ * communicate with it).
+ *
+ * @note Storing active lock keys in this structure results in their setting
+ *       being device-specific.
+ */
+typedef struct usb_kbd_t {
+	/** Previously pressed keys (not translated to key codes). */
+	int32_t *keys_old;
+	/** Currently pressed keys (not translated to key codes). */
+	int32_t *keys;
+	/** Count of stored keys (i.e. number of keys in the report). */
+	size_t key_count;
+	/** Currently pressed modifiers (bitmap). */
+	uint8_t modifiers;
+	
+	/** Currently active modifiers including locks. Sent to the console. */
+	unsigned mods;
+	
+	/** Currently active lock keys. */
+	unsigned lock_keys;
+	
+	/** IPC phone to the console device (for sending key events). */
+	int console_phone;
+	
+	/** @todo What is this actually? */
+	ddf_dev_ops_t ops;
+	
+	/** Information for auto-repeat of keys. */
+	usb_kbd_repeat_t repeat;
+	
+	/** Mutex for accessing the information about auto-repeat. */
+	fibril_mutex_t *repeat_mtx;
+	
+	uint8_t *output_buffer;
+	
+	size_t output_size;
+	
+	size_t led_output_size;
+	
+	usb_hid_report_path_t *led_path;
+	
+	int32_t *led_data;
+	
+	/** State of the structure (for checking before use). 
+	 * 
+	 * 0 - not initialized
+	 * 1 - initialized
+	 * -1 - ready for destroying
+	 */
+	int initialized;
+} usb_kbd_t;
+
+/*----------------------------------------------------------------------------*/
+
+usb_endpoint_description_t usb_hid_kbd_poll_endpoint_description;
+
+const char *HID_KBD_FUN_NAME;
+const char *HID_KBD_CLASS_NAME;
+
+/*----------------------------------------------------------------------------*/
+
+int usb_kbd_init(struct usb_hid_dev *hid_dev, void **data);
+
+bool usb_kbd_polling_callback(struct usb_hid_dev *hid_dev, void *data, 
+                              uint8_t *buffer, size_t buffer_size);
+
+int usb_kbd_is_initialized(const usb_kbd_t *kbd_dev);
+
+int usb_kbd_is_ready_to_destroy(const usb_kbd_t *kbd_dev);
+
+void usb_kbd_free(usb_kbd_t **kbd_dev);
+
+void usb_kbd_push_ev(struct usb_hid_dev *hid_dev, usb_kbd_t *kbd_dev,
+    int type, unsigned int key);
+
+void usb_kbd_deinit(struct usb_hid_dev *hid_dev, void *data);
+
+int usb_kbd_set_boot_protocol(struct usb_hid_dev *hid_dev);
+
+#endif /* USB_HID_KBDDEV_H_ */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/kbd/kbdrepeat.c
===================================================================
--- uspace/drv/usbhid/kbd/kbdrepeat.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/kbd/kbdrepeat.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/**
+ * @file
+ * USB HID keyboard autorepeat facilities
+ */
+
+#include <fibril_synch.h>
+#include <io/keycode.h>
+#include <io/console.h>
+#include <errno.h>
+
+#include <usb/debug.h>
+
+#include "kbdrepeat.h"
+#include "kbddev.h"
+
+
+/** Delay between auto-repeat state checks when no key is being repeated. */
+static unsigned int CHECK_DELAY = 10000;
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Main loop handling the auto-repeat of keys.
+ *
+ * This functions periodically checks if there is some key to be auto-repeated.
+ *
+ * If a new key is to be repeated, it uses the delay before first repeat stored
+ * in the keyboard structure to wait until the key has to start repeating.
+ *
+ * If the same key is still pressed, it uses the delay between repeats stored
+ * in the keyboard structure to wait until the key should be repeated.
+ * 
+ * If the currently repeated key is not pressed any more (
+ * usb_kbd_repeat_stop() was called), it stops repeating it and starts 
+ * checking again.
+ *
+ * @note For accessing the keyboard device auto-repeat information a fibril
+ *       mutex (repeat_mtx) from the @a kbd structure is used.
+ * 
+ * @param kbd Keyboard device structure.
+ */
+static void usb_kbd_repeat_loop(usb_kbd_t *kbd)
+{
+	unsigned int delay = 0;
+	
+	usb_log_debug("Starting autorepeat loop.\n");
+
+	while (true) {
+		// check if the kbd structure is usable
+		if (!usb_kbd_is_initialized(kbd)) {
+			if (usb_kbd_is_ready_to_destroy(kbd)) {
+				usb_kbd_free(&kbd);
+				assert(kbd == NULL);
+			}
+			return;
+		}
+		
+		fibril_mutex_lock(kbd->repeat_mtx);
+
+		if (kbd->repeat.key_new > 0) {
+			if (kbd->repeat.key_new == kbd->repeat.key_repeated) {
+				usb_log_debug2("Repeating key: %u.\n", 
+				    kbd->repeat.key_repeated);
+				// ugly hack with the NULL
+				usb_kbd_push_ev(NULL, kbd, KEY_PRESS, 
+				    kbd->repeat.key_repeated);
+				delay = kbd->repeat.delay_between;
+			} else {
+				usb_log_debug("New key to repeat: %u.\n", 
+				    kbd->repeat.key_new);
+				kbd->repeat.key_repeated = kbd->repeat.key_new;
+				delay = kbd->repeat.delay_before;
+			}
+		} else {
+			if (kbd->repeat.key_repeated > 0) {
+				usb_log_debug("Stopping to repeat key: %u.\n", 
+				    kbd->repeat.key_repeated);
+				kbd->repeat.key_repeated = 0;
+			}
+			delay = CHECK_DELAY;
+		}
+		fibril_mutex_unlock(kbd->repeat_mtx);
+		
+		async_usleep(delay);
+	}
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Main routine to be executed by a fibril for handling auto-repeat.
+ *
+ * Starts the loop for checking changes in auto-repeat.
+ * 
+ * @param arg User-specified argument. Expects pointer to the keyboard device
+ *            structure representing the keyboard.
+ *
+ * @retval EOK if the routine has finished.
+ * @retval EINVAL if no argument is supplied.
+ */
+int usb_kbd_repeat_fibril(void *arg)
+{
+	usb_log_debug("Autorepeat fibril spawned.\n");
+	
+	if (arg == NULL) {
+		usb_log_error("No device!\n");
+		return EINVAL;
+	}
+	
+	usb_kbd_t *kbd = (usb_kbd_t *)arg;
+	
+	usb_kbd_repeat_loop(kbd);
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Start repeating particular key.
+ *
+ * @note Only one key is repeated at any time, so calling this function 
+ *       effectively cancels auto-repeat of the current repeated key (if any)
+ *       and 'schedules' another key for auto-repeat.
+ *
+ * @param kbd Keyboard device structure.
+ * @param key Key to start repeating.
+ */
+void usb_kbd_repeat_start(usb_kbd_t *kbd, unsigned int key)
+{
+	fibril_mutex_lock(kbd->repeat_mtx);
+	kbd->repeat.key_new = key;
+	fibril_mutex_unlock(kbd->repeat_mtx);
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Stop repeating particular key.
+ *
+ * @note Only one key is repeated at any time, but this function may be called
+ *       even with key that is not currently repeated (in that case nothing 
+ *       happens).
+ *
+ * @param kbd Keyboard device structure.
+ * @param key Key to stop repeating.
+ */
+void usb_kbd_repeat_stop(usb_kbd_t *kbd, unsigned int key)
+{
+	fibril_mutex_lock(kbd->repeat_mtx);
+	if (key == kbd->repeat.key_new) {
+		kbd->repeat.key_new = 0;
+	}
+	fibril_mutex_unlock(kbd->repeat_mtx);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/kbd/kbdrepeat.h
===================================================================
--- uspace/drv/usbhid/kbd/kbdrepeat.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/kbd/kbdrepeat.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB HID keyboard autorepeat facilities
+ */
+
+#ifndef USB_HID_KBDREPEAT_H_
+#define USB_HID_KBDREPEAT_H_
+
+struct usb_kbd_t;
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Structure for keeping information needed for auto-repeat of keys.
+ */
+typedef struct {
+	/** Last pressed key. */
+	unsigned int key_new;
+	/** Key to be repeated. */
+	unsigned int key_repeated;
+	/** Delay before first repeat in microseconds. */
+	unsigned int delay_before;
+	/** Delay between repeats in microseconds. */
+	unsigned int delay_between;
+} usb_kbd_repeat_t;
+
+/*----------------------------------------------------------------------------*/
+
+int usb_kbd_repeat_fibril(void *arg);
+
+void usb_kbd_repeat_start(struct usb_kbd_t *kbd, unsigned int key);
+
+void usb_kbd_repeat_stop(struct usb_kbd_t *kbd, unsigned int key);
+
+#endif /* USB_HID_KBDREPEAT_H_ */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/kbd/layout.h
===================================================================
--- uspace/drv/usbhid/kbd/layout.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/kbd/layout.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,1 @@
+../layout.h
Index: uspace/drv/usbhid/kbd/main.c
===================================================================
--- uspace/drv/usbhid/kbd/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/kbd/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,244 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/**
+ * @file
+ * Main routines of USB KBD driver.
+ */
+
+#include <ddf/driver.h>
+#include <usb/debug.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/dev/driver.h>
+
+#include "kbddev.h"
+#include "kbdrepeat.h"
+
+/*----------------------------------------------------------------------------*/
+
+#define NAME "usbkbd"
+
+/**
+ * Function for adding a new device of type USB/HID/keyboard.
+ *
+ * This functions initializes required structures from the device's descriptors
+ * and starts new fibril for polling the keyboard for events and another one for
+ * handling auto-repeat of keys.
+ *
+ * During initialization, the keyboard is switched into boot protocol, the idle
+ * rate is set to 0 (infinity), resulting in the keyboard only reporting event
+ * when a key is pressed or released. Finally, the LED lights are turned on 
+ * according to the default setup of lock keys.
+ *
+ * @note By default, the keyboards is initialized with Num Lock turned on and 
+ *       other locks turned off.
+ * @note Currently supports only boot-protocol keyboards.
+ *
+ * @param dev Device to add.
+ *
+ * @retval EOK if successful.
+ * @retval ENOMEM if there
+ * @return Other error code inherited from one of functions usb_kbd_init(),
+ *         ddf_fun_bind() and ddf_fun_add_to_class().
+ *
+ * @sa usb_kbd_fibril(), usb_kbd_repeat_fibril()
+ */
+static int usb_kbd_try_add_device(usb_device_t *dev)
+{
+	/* Create the function exposed under /dev/devices. */
+	ddf_fun_t *kbd_fun = ddf_fun_create(dev->ddf_dev, fun_exposed, 
+	    "keyboard");
+	if (kbd_fun == NULL) {
+		usb_log_error("Could not create DDF function node.\n");
+		return ENOMEM;
+	}
+	
+	/* 
+	 * Initialize device (get and process descriptors, get address, etc.)
+	 */
+	usb_log_debug("Initializing USB/HID KBD device...\n");
+	
+	usb_kbd_t *kbd_dev = usb_kbd_new();
+	if (kbd_dev == NULL) {
+		usb_log_error("Error while creating USB/HID KBD device "
+		    "structure.\n");
+		ddf_fun_destroy(kbd_fun);
+		return ENOMEM;  // TODO: some other code??
+	}
+	
+	int rc = usb_kbd_init(kbd_dev, dev);
+	
+	if (rc != EOK) {
+		usb_log_error("Failed to initialize USB/HID KBD device.\n");
+		ddf_fun_destroy(kbd_fun);
+		usb_kbd_free(&kbd_dev);
+		return rc;
+	}	
+	
+	usb_log_debug("USB/HID KBD device structure initialized.\n");
+	
+	/*
+	 * Store the initialized keyboard device and keyboard ops
+	 * to the DDF function.
+	 */
+	kbd_fun->driver_data = kbd_dev;
+	kbd_fun->ops = &keyboard_ops;
+
+	rc = ddf_fun_bind(kbd_fun);
+	if (rc != EOK) {
+		usb_log_error("Could not bind DDF function: %s.\n",
+		    str_error(rc));
+		// TODO: Can / should I destroy the DDF function?
+		ddf_fun_destroy(kbd_fun);
+		usb_kbd_free(&kbd_dev);
+		return rc;
+	}
+	
+	rc = ddf_fun_add_to_class(kbd_fun, "keyboard");
+	if (rc != EOK) {
+		usb_log_error(
+		    "Could not add DDF function to class 'keyboard': %s.\n",
+		    str_error(rc));
+		ddf_fun_destroy(kbd_fun);
+		usb_kbd_free(&kbd_dev);
+		return rc;
+	}
+	
+	/* Start automated polling function.
+	 * This will create a separate fibril that will query the device
+	 * for the data continuously 
+	 */
+       rc = usb_device_auto_poll(dev,
+	   /* Index of the polling pipe. */
+	   USB_KBD_POLL_EP_NO,
+	   /* Callback when data arrives. */
+	   usb_kbd_polling_callback,
+	   /* How much data to request. */
+	   dev->pipes[USB_KBD_POLL_EP_NO].pipe->max_packet_size,
+	   /* Callback when the polling ends. */
+	   usb_kbd_polling_ended_callback,
+	   /* Custom argument. */
+	   kbd_dev);
+	
+	
+	if (rc != EOK) {
+		usb_log_error("Failed to start polling fibril for `%s'.\n",
+		    dev->ddf_dev->name);
+		return rc;
+	}
+	
+	/*
+	 * Create new fibril for auto-repeat
+	 */
+	fid_t fid = fibril_create(usb_kbd_repeat_fibril, kbd_dev);
+	if (fid == 0) {
+		usb_log_error("Failed to start fibril for KBD auto-repeat");
+		return ENOMEM;
+	}
+	fibril_add_ready(fid);
+
+	(void)keyboard_ops;
+
+	/*
+	 * Hurrah, device is initialized.
+	 */
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Callback for passing a new device to the driver.
+ *
+ * @note Currently, only boot-protocol keyboards are supported by this driver.
+ *
+ * @param dev Structure representing the new device.
+ *
+ * @retval EOK if successful. 
+ * @retval EREFUSED if the device is not supported.
+ */
+static int usb_kbd_add_device(usb_device_t *dev)
+{
+	usb_log_debug("usb_kbd_add_device()\n");
+	
+	if (dev->interface_no < 0) {
+		usb_log_warning("Device is not a supported keyboard.\n");
+		usb_log_error("Failed to add USB KBD device: endpoint not "
+		    "found.\n");
+		return ENOTSUP;
+	}
+	
+	int rc = usb_kbd_try_add_device(dev);
+	
+	if (rc != EOK) {
+		usb_log_warning("Device is not a supported keyboard.\n");
+		usb_log_error("Failed to add KBD device: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+	
+	usb_log_info("Keyboard `%s' ready to use.\n", dev->ddf_dev->name);
+
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+/* Currently, the framework supports only device adding. Once the framework
+ * supports unplug, more callbacks will be added. */
+static usb_driver_ops_t usb_kbd_driver_ops = {
+        .add_device = usb_kbd_add_device,
+};
+
+
+/* The driver itself. */
+static usb_driver_t usb_kbd_driver = {
+        .name = NAME,
+        .ops = &usb_kbd_driver_ops,
+        .endpoints = usb_kbd_endpoints
+};
+
+/*----------------------------------------------------------------------------*/
+
+int main(int argc, char *argv[])
+{
+	printf(NAME ": HelenOS USB KBD driver.\n");
+
+	usb_log_enable(USB_LOG_LEVEL_DEBUG, NAME);
+
+	return usb_driver_main(&usb_kbd_driver);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/layout.h
===================================================================
--- uspace/drv/usbhid/layout.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/layout.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2009 Jiri Svoboda
+ * Copyright (c) 2011 Lubos Slovak 
+ * (copied from /uspace/srv/hid/kbd/include/layout.h)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * Keyboard layout.
+ */
+
+#ifndef USB_HID_LAYOUT_H_
+#define USB_HID_LAYOUT_H_
+
+#include <sys/types.h>
+#include <io/console.h>
+
+typedef struct {
+	void (*reset)(void);
+	wchar_t (*parse_ev)(console_event_t *);
+} layout_op_t;
+
+extern layout_op_t us_qwerty_op;
+extern layout_op_t us_dvorak_op;
+extern layout_op_t cz_op;
+
+#endif
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/main.c
===================================================================
--- uspace/drv/usbhid/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/**
+ * @file
+ * Main routines of USB HID driver.
+ */
+
+#include <ddf/driver.h>
+#include <usb/debug.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/dev/driver.h>
+#include <usb/dev/poll.h>
+
+#include "usbhid.h"
+
+/*----------------------------------------------------------------------------*/
+
+#define NAME "usbhid"
+
+/**
+ * Function for adding a new device of type USB/HID/keyboard.
+ *
+ * This functions initializes required structures from the device's descriptors
+ * and starts new fibril for polling the keyboard for events and another one for
+ * handling auto-repeat of keys.
+ *
+ * During initialization, the keyboard is switched into boot protocol, the idle
+ * rate is set to 0 (infinity), resulting in the keyboard only reporting event
+ * when a key is pressed or released. Finally, the LED lights are turned on 
+ * according to the default setup of lock keys.
+ *
+ * @note By default, the keyboards is initialized with Num Lock turned on and 
+ *       other locks turned off.
+ * @note Currently supports only boot-protocol keyboards.
+ *
+ * @param dev Device to add.
+ *
+ * @retval EOK if successful.
+ * @retval ENOMEM if there
+ * @return Other error code inherited from one of functions usb_kbd_init(),
+ *         ddf_fun_bind() and ddf_fun_add_to_class().
+ */
+static int usb_hid_try_add_device(usb_device_t *dev)
+{
+	assert(dev != NULL);
+	
+	/* 
+	 * Initialize device (get and process descriptors, get address, etc.)
+	 */
+	usb_log_debug("Initializing USB/HID device...\n");
+	
+	usb_hid_dev_t *hid_dev = usb_hid_new();
+	if (hid_dev == NULL) {
+		usb_log_error("Error while creating USB/HID device "
+		    "structure.\n");
+		return ENOMEM;
+	}
+	
+	int rc = usb_hid_init(hid_dev, dev);
+	
+	if (rc != EOK) {
+		usb_log_error("Failed to initialize USB/HID device.\n");
+		usb_hid_free(&hid_dev);
+		return rc;
+	}	
+	
+	usb_log_debug("USB/HID device structure initialized.\n");
+	
+	/*
+	 * 1) subdriver vytvori vlastnu ddf_fun, vlastne ddf_dev_ops, ktore da
+	 *    do nej.
+	 * 2) do tych ops do .interfaces[DEV_IFACE_USBHID (asi)] priradi 
+	 *    vyplnenu strukturu usbhid_iface_t.
+	 * 3) klientska aplikacia - musi si rucne vytvorit telefon
+	 *    (devman_device_connect() - cesta k zariadeniu (/hw/pci0/...) az 
+	 *    k tej fcii.
+	 *    pouzit usb/classes/hid/iface.h - prvy int je telefon
+	 */
+	
+	/* Start automated polling function.
+	 * This will create a separate fibril that will query the device
+	 * for the data continuously 
+	 */
+       rc = usb_device_auto_poll(dev,
+	   /* Index of the polling pipe. */
+	   hid_dev->poll_pipe_index,
+	   /* Callback when data arrives. */
+	   usb_hid_polling_callback,
+	   /* How much data to request. */
+	   dev->pipes[hid_dev->poll_pipe_index].pipe->max_packet_size,
+	   /* Callback when the polling ends. */
+	   usb_hid_polling_ended_callback,
+	   /* Custom argument. */
+	   hid_dev);
+	
+	
+	if (rc != EOK) {
+		usb_log_error("Failed to start polling fibril for `%s'.\n",
+		    dev->ddf_dev->name);
+		return rc;
+	}
+
+	/*
+	 * Hurrah, device is initialized.
+	 */
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Callback for passing a new device to the driver.
+ *
+ * @note Currently, only boot-protocol keyboards are supported by this driver.
+ *
+ * @param dev Structure representing the new device.
+ *
+ * @retval EOK if successful. 
+ * @retval EREFUSED if the device is not supported.
+ */
+static int usb_hid_add_device(usb_device_t *dev)
+{
+	usb_log_debug("usb_hid_add_device()\n");
+	
+	if (dev == NULL) {
+		usb_log_warning("Wrong parameter given for add_device().\n");
+		return EINVAL;
+	}
+	
+	if (dev->interface_no < 0) {
+		usb_log_warning("Device is not a supported HID device.\n");
+		usb_log_error("Failed to add HID device: endpoints not found."
+		    "\n");
+		return ENOTSUP;
+	}
+	
+	int rc = usb_hid_try_add_device(dev);
+	
+	if (rc != EOK) {
+		usb_log_warning("Device is not a supported HID device.\n");
+		usb_log_error("Failed to add HID device: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+	
+	usb_log_info("HID device `%s' ready to use.\n", dev->ddf_dev->name);
+
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+/* Currently, the framework supports only device adding. Once the framework
+ * supports unplug, more callbacks will be added. */
+static usb_driver_ops_t usb_hid_driver_ops = {
+        .add_device = usb_hid_add_device,
+};
+
+
+/* The driver itself. */
+static usb_driver_t usb_hid_driver = {
+        .name = NAME,
+        .ops = &usb_hid_driver_ops,
+        .endpoints = usb_hid_endpoints
+};
+
+/*----------------------------------------------------------------------------*/
+
+int main(int argc, char *argv[])
+{
+	printf(NAME ": HelenOS USB HID driver.\n");
+
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+
+	return usb_driver_main(&usb_hid_driver);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/mouse/mousedev.c
===================================================================
--- uspace/drv/usbhid/mouse/mousedev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/mouse/mousedev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,562 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak, Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/**
+ * @file
+ * USB Mouse driver API.
+ */
+
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+#include <usb/hid/hid.h>
+#include <usb/hid/request.h>
+#include <usb/hid/usages/core.h>
+#include <errno.h>
+#include <str_error.h>
+#include <ipc/mouse.h>
+#include <io/console.h>
+
+#include <ipc/kbd.h>
+#include <io/keycode.h>
+
+#include "mousedev.h"
+#include "../usbhid.h"
+
+#define NAME "mouse"
+
+/*----------------------------------------------------------------------------*/
+
+usb_endpoint_description_t usb_hid_mouse_poll_endpoint_description = {
+	.transfer_type = USB_TRANSFER_INTERRUPT,
+	.direction = USB_DIRECTION_IN,
+	.interface_class = USB_CLASS_HID,
+	.interface_subclass = USB_HID_SUBCLASS_BOOT,
+	.interface_protocol = USB_HID_PROTOCOL_MOUSE,
+	.flags = 0
+};
+
+const char *HID_MOUSE_FUN_NAME = "mouse";
+const char *HID_MOUSE_WHEEL_FUN_NAME = "mouse-wheel";
+const char *HID_MOUSE_CLASS_NAME = "mouse";
+const char *HID_MOUSE_WHEEL_CLASS_NAME = "keyboard";
+
+/** Default idle rate for mouses. */
+static const uint8_t IDLE_RATE = 0;
+static const size_t USB_MOUSE_BUTTON_COUNT = 3;
+
+/*----------------------------------------------------------------------------*/
+
+enum {
+	USB_MOUSE_BOOT_REPORT_DESCRIPTOR_SIZE = 63
+};
+
+static const uint8_t USB_MOUSE_BOOT_REPORT_DESCRIPTOR[
+    USB_MOUSE_BOOT_REPORT_DESCRIPTOR_SIZE] = {
+	0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
+	0x09, 0x02,                    // USAGE (Mouse)
+	0xa1, 0x01,                    // COLLECTION (Application)
+	0x09, 0x01,                    //   USAGE (Pointer)
+	0xa1, 0x00,                    //   COLLECTION (Physical)
+	0x95, 0x03,                    //     REPORT_COUNT (3)
+	0x75, 0x01,                    //     REPORT_SIZE (1)
+	0x05, 0x09,                    //     USAGE_PAGE (Button)
+	0x19, 0x01,                    //     USAGE_MINIMUM (Button 1)
+	0x29, 0x03,                    //     USAGE_MAXIMUM (Button 3)
+	0x15, 0x00,                    //     LOGICAL_MINIMUM (0)
+	0x25, 0x01,                    //     LOGICAL_MAXIMUM (1)
+	0x81, 0x02,                    //     INPUT (Data,Var,Abs)
+	0x95, 0x01,                    //     REPORT_COUNT (1)
+	0x75, 0x05,                    //     REPORT_SIZE (5)
+	0x81, 0x01,                    //     INPUT (Cnst)
+	0x75, 0x08,                    //     REPORT_SIZE (8)
+	0x95, 0x02,                    //     REPORT_COUNT (2)
+	0x05, 0x01,                    //     USAGE_PAGE (Generic Desktop)
+	0x09, 0x30,                    //     USAGE (X)
+	0x09, 0x31,                    //     USAGE (Y)
+	0x15, 0x81,                    //     LOGICAL_MINIMUM (-127)
+	0x25, 0x7f,                    //     LOGICAL_MAXIMUM (127)
+	0x81, 0x06,                    //     INPUT (Data,Var,Rel)
+	0xc0,                          //   END_COLLECTION
+	0xc0                           // END_COLLECTION
+};
+
+/*----------------------------------------------------------------------------*/
+
+/** Default handler for IPC methods not handled by DDF.
+ *
+ * @param fun Device function handling the call.
+ * @param icallid Call id.
+ * @param icall Call data.
+ */
+static void default_connection_handler(ddf_fun_t *fun,
+    ipc_callid_t icallid, ipc_call_t *icall)
+{
+	sysarg_t method = IPC_GET_IMETHOD(*icall);
+	
+	usb_mouse_t *mouse_dev = (usb_mouse_t *)fun->driver_data;
+	
+	if (mouse_dev == NULL) {
+		usb_log_debug("default_connection_handler: Missing "
+		    "parameters.\n");
+		async_answer_0(icallid, EINVAL);
+		return;
+	}
+	
+	usb_log_debug("default_connection_handler: fun->name: %s\n",
+	              fun->name);
+	usb_log_debug("default_connection_handler: mouse_phone: %d, wheel "
+	    "phone: %d\n", mouse_dev->mouse_phone, mouse_dev->wheel_phone);
+	
+	int *phone = (str_cmp(fun->name, HID_MOUSE_FUN_NAME) == 0) 
+		     ? &mouse_dev->mouse_phone : &mouse_dev->wheel_phone;
+	
+	if (method == IPC_M_CONNECT_TO_ME) {
+		int callback = IPC_GET_ARG5(*icall);
+
+		if (*phone != -1) {
+			usb_log_debug("default_connection_handler: Console "
+			    "phone to mouse already set.\n");
+			async_answer_0(icallid, ELIMIT);
+			return;
+		}
+
+		*phone = callback;
+		usb_log_debug("Console phone to mouse set ok (%d).\n", *phone);
+		async_answer_0(icallid, EOK);
+		return;
+	}
+
+	usb_log_debug("default_connection_handler: Invalid function.\n");
+	async_answer_0(icallid, EINVAL);
+}
+
+/*----------------------------------------------------------------------------*/
+
+static usb_mouse_t *usb_mouse_new(void)
+{
+	usb_mouse_t *mouse = calloc(1, sizeof(usb_mouse_t));
+	if (mouse == NULL) {
+		return NULL;
+	}
+	mouse->mouse_phone = -1;
+	mouse->wheel_phone = -1;
+	
+	return mouse;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static void usb_mouse_free(usb_mouse_t **mouse_dev)
+{
+	assert(mouse_dev != NULL && *mouse_dev != NULL);
+	
+	// hangup phone to the console
+	if ((*mouse_dev)->mouse_phone >= 0) {
+		async_hangup((*mouse_dev)->mouse_phone);
+	}
+	
+	if ((*mouse_dev)->wheel_phone >= 0) {
+		async_hangup((*mouse_dev)->wheel_phone);
+	}
+	
+	free(*mouse_dev);
+	*mouse_dev = NULL;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static void usb_mouse_send_wheel(const usb_mouse_t *mouse_dev, int wheel)
+{
+	console_event_t ev;
+	
+	ev.type = KEY_PRESS;
+	ev.key = (wheel > 0) ? KC_UP : (wheel < 0) ? KC_DOWN : 0;
+	ev.mods = 0;
+	ev.c = 0;
+
+	if (mouse_dev->wheel_phone < 0) {
+		usb_log_warning(
+		    "Connection to console not ready, key discarded.\n");
+		return;
+	}
+	
+	int count = (wheel < 0) ? -wheel : wheel;
+	int i;
+	
+	for (i = 0; i < count * 3; ++i) {
+		usb_log_debug2("Sending key %d to the console\n", ev.key);
+		async_msg_4(mouse_dev->wheel_phone, KBD_EVENT, ev.type, 
+		    ev.key, ev.mods, ev.c);
+		// send key release right away
+		async_msg_4(mouse_dev->wheel_phone, KBD_EVENT, KEY_RELEASE, 
+		    ev.key, ev.mods, ev.c);
+	}
+}
+
+/*----------------------------------------------------------------------------*/
+
+static bool usb_mouse_process_report(usb_hid_dev_t *hid_dev, 
+                                     usb_mouse_t *mouse_dev, uint8_t *buffer,
+                                     size_t buffer_size)
+{
+	assert(mouse_dev != NULL);
+	
+	usb_log_debug2("got buffer: %s.\n",
+	    usb_debug_str_buffer(buffer, buffer_size, 0));
+	
+	if (mouse_dev->mouse_phone < 0) {
+		usb_log_warning(NAME " No console phone.\n");
+		return true;
+	}
+
+	/*
+	 * parse the input report
+	 */
+	
+	usb_log_debug(NAME " Calling usb_hid_parse_report() with "
+	    "buffer %s\n", usb_debug_str_buffer(buffer, buffer_size, 0));
+	
+	uint8_t report_id;
+	
+	int rc = usb_hid_parse_report(hid_dev->report, buffer, buffer_size, 
+	    &report_id);
+	
+	if (rc != EOK) {
+		usb_log_warning(NAME "Error in usb_hid_parse_report(): %s\n", 
+		    str_error(rc));
+		return true;
+	}
+	
+	/*
+	 * X
+	 */
+	int shift_x = 0;
+	
+	usb_hid_report_path_t *path = usb_hid_report_path();
+	usb_hid_report_path_append_item(path, USB_HIDUT_PAGE_GENERIC_DESKTOP, 
+	    USB_HIDUT_USAGE_GENERIC_DESKTOP_X);
+
+	usb_hid_report_path_set_report_id(path, report_id);
+
+	usb_hid_report_field_t *field = usb_hid_report_get_sibling(
+	    hid_dev->report, NULL, path, USB_HID_PATH_COMPARE_END, 
+	    USB_HID_REPORT_TYPE_INPUT);
+
+	if (field != NULL) {
+		usb_log_debug(NAME " VALUE(%X) USAGE(%X)\n", field->value, 
+		    field->usage);
+		shift_x = field->value;
+	}
+
+	usb_hid_report_path_free(path);
+	
+	/*
+	 * Y
+	 */
+	int shift_y = 0;
+	
+	path = usb_hid_report_path();
+	usb_hid_report_path_append_item(path, USB_HIDUT_PAGE_GENERIC_DESKTOP, 
+	    USB_HIDUT_USAGE_GENERIC_DESKTOP_Y);
+
+	usb_hid_report_path_set_report_id(path, report_id);
+
+	field = usb_hid_report_get_sibling(
+	    hid_dev->report, NULL, path, USB_HID_PATH_COMPARE_END, 
+	    USB_HID_REPORT_TYPE_INPUT);
+
+	if (field != NULL) {
+		usb_log_debug(NAME " VALUE(%X) USAGE(%X)\n", field->value, 
+		    field->usage);
+		shift_y = field->value;
+	}
+
+	usb_hid_report_path_free(path);
+	
+	if ((shift_x != 0) || (shift_y != 0)) {
+		async_req_2_0(mouse_dev->mouse_phone,
+		    MEVENT_MOVE, shift_x, shift_y);
+	}
+	
+	/*
+	 * Wheel
+	 */
+	int wheel = 0;
+	
+	path = usb_hid_report_path();
+	usb_hid_report_path_append_item(path, USB_HIDUT_PAGE_GENERIC_DESKTOP, 
+	    USB_HIDUT_USAGE_GENERIC_DESKTOP_WHEEL);
+
+	usb_hid_report_path_set_report_id(path, report_id);
+	
+	field = usb_hid_report_get_sibling(
+	    hid_dev->report, NULL, path, USB_HID_PATH_COMPARE_END, 
+	    USB_HID_REPORT_TYPE_INPUT);
+
+	if (field != NULL) {
+		usb_log_debug(NAME " VALUE(%X) USAGE(%X)\n", field->value, 
+		    field->usage);
+		wheel = field->value;
+	}
+
+	usb_hid_report_path_free(path);
+	
+	// send arrow up for positive direction and arrow down for negative
+	// direction; three arrows for difference of 1
+	usb_mouse_send_wheel(mouse_dev, wheel);
+	
+	
+	/*
+	 * Buttons
+	 */
+	path = usb_hid_report_path();
+	usb_hid_report_path_append_item(path, USB_HIDUT_PAGE_BUTTON, 0);
+	usb_hid_report_path_set_report_id(path, report_id);
+	
+	field = usb_hid_report_get_sibling(
+	    hid_dev->report, NULL, path, USB_HID_PATH_COMPARE_END
+	    | USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY, 
+	    USB_HID_REPORT_TYPE_INPUT);
+
+	while (field != NULL) {
+		usb_log_debug(NAME " VALUE(%X) USAGE(%X)\n", field->value, 
+		    field->usage);
+		
+		if (mouse_dev->buttons[field->usage - field->usage_minimum] == 0
+		    && field->value != 0) {
+			async_req_2_0(mouse_dev->mouse_phone,
+			    MEVENT_BUTTON, field->usage, 1);
+			mouse_dev->buttons[field->usage - field->usage_minimum]
+			    = field->value;
+		} else if (
+		    mouse_dev->buttons[field->usage - field->usage_minimum] != 0
+		    && field->value == 0) {
+		       async_req_2_0(mouse_dev->mouse_phone,
+			   MEVENT_BUTTON, field->usage, 0);
+		       mouse_dev->buttons[field->usage - field->usage_minimum]
+			   = field->value;
+	       }
+		
+		field = usb_hid_report_get_sibling(
+		    hid_dev->report, field, path, USB_HID_PATH_COMPARE_END
+		    | USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY, 
+		    USB_HID_REPORT_TYPE_INPUT);
+	}
+	
+	usb_hid_report_path_free(path);
+
+	return true;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_mouse_create_function(usb_hid_dev_t *hid_dev, usb_mouse_t *mouse)
+{
+	assert(hid_dev != NULL);
+	assert(mouse != NULL);
+	
+	/* Create the function exposed under /dev/devices. */
+	usb_log_debug("Creating DDF function %s...\n", HID_MOUSE_FUN_NAME);
+	ddf_fun_t *fun = ddf_fun_create(hid_dev->usb_dev->ddf_dev, fun_exposed, 
+	    HID_MOUSE_FUN_NAME);
+	if (fun == NULL) {
+		usb_log_error("Could not create DDF function node.\n");
+		return ENOMEM;
+	}
+	
+	fun->ops = &mouse->ops;
+	fun->driver_data = mouse;
+
+	int rc = ddf_fun_bind(fun);
+	if (rc != EOK) {
+		usb_log_error("Could not bind DDF function: %s.\n",
+		    str_error(rc));
+		ddf_fun_destroy(fun);
+		return rc;
+	}
+	
+	usb_log_debug("Adding DDF function to class %s...\n", 
+	    HID_MOUSE_CLASS_NAME);
+	rc = ddf_fun_add_to_class(fun, HID_MOUSE_CLASS_NAME);
+	if (rc != EOK) {
+		usb_log_error(
+		    "Could not add DDF function to class %s: %s.\n",
+		    HID_MOUSE_CLASS_NAME, str_error(rc));
+		ddf_fun_destroy(fun);
+		return rc;
+	}
+	
+	/*
+	 * Special function for acting as keyboard (wheel)
+	 */
+	usb_log_debug("Creating DDF function %s...\n", 
+	              HID_MOUSE_WHEEL_FUN_NAME);
+	fun = ddf_fun_create(hid_dev->usb_dev->ddf_dev, fun_exposed, 
+	    HID_MOUSE_WHEEL_FUN_NAME);
+	if (fun == NULL) {
+		usb_log_error("Could not create DDF function node.\n");
+		return ENOMEM;
+	}
+	
+	/*
+	 * Store the initialized HID device and HID ops
+	 * to the DDF function.
+	 */
+	fun->ops = &mouse->ops;
+	fun->driver_data = mouse;
+
+	rc = ddf_fun_bind(fun);
+	if (rc != EOK) {
+		usb_log_error("Could not bind DDF function: %s.\n",
+		    str_error(rc));
+		ddf_fun_destroy(fun);
+		return rc;
+	}
+	
+	usb_log_debug("Adding DDF function to class %s...\n", 
+	    HID_MOUSE_WHEEL_CLASS_NAME);
+	rc = ddf_fun_add_to_class(fun, HID_MOUSE_WHEEL_CLASS_NAME);
+	if (rc != EOK) {
+		usb_log_error(
+		    "Could not add DDF function to class %s: %s.\n",
+		    HID_MOUSE_WHEEL_CLASS_NAME, str_error(rc));
+		ddf_fun_destroy(fun);
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+int usb_mouse_init(usb_hid_dev_t *hid_dev, void **data)
+{
+	usb_log_debug("Initializing HID/Mouse structure...\n");
+	
+	if (hid_dev == NULL) {
+		usb_log_error("Failed to init keyboard structure: no structure"
+		    " given.\n");
+		return EINVAL;
+	}
+	
+	usb_mouse_t *mouse_dev = usb_mouse_new();
+	if (mouse_dev == NULL) {
+		usb_log_error("Error while creating USB/HID Mouse device "
+		    "structure.\n");
+		return ENOMEM;
+	}
+	
+	mouse_dev->buttons = (int32_t *)calloc(USB_MOUSE_BUTTON_COUNT, 
+	    sizeof(int32_t));
+	
+	if (mouse_dev->buttons == NULL) {
+		usb_log_fatal("No memory!\n");
+		free(mouse_dev);
+		return ENOMEM;
+	}
+	
+	// save the Mouse device structure into the HID device structure
+	*data = mouse_dev;
+	
+	// set handler for incoming calls
+	mouse_dev->ops.default_handler = default_connection_handler;
+	
+	// TODO: how to know if the device supports the request???
+	usbhid_req_set_idle(&hid_dev->usb_dev->ctrl_pipe, 
+	    hid_dev->usb_dev->interface_no, IDLE_RATE);
+	
+	int rc = usb_mouse_create_function(hid_dev, mouse_dev);
+	if (rc != EOK) {
+		usb_mouse_free(&mouse_dev);
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+bool usb_mouse_polling_callback(usb_hid_dev_t *hid_dev, void *data, 
+     uint8_t *buffer, size_t buffer_size)
+{
+	usb_log_debug("usb_mouse_polling_callback()\n");
+	usb_debug_str_buffer(buffer, buffer_size, 0);
+	
+	if (hid_dev == NULL || data == NULL) {
+		usb_log_error("Missing argument to the mouse polling callback."
+		    "\n");
+		return false;
+	}
+	
+	usb_mouse_t *mouse_dev = (usb_mouse_t *)data;
+		
+	return usb_mouse_process_report(hid_dev, mouse_dev, buffer, 
+	                                buffer_size);
+}
+
+/*----------------------------------------------------------------------------*/
+
+void usb_mouse_deinit(usb_hid_dev_t *hid_dev, void *data)
+{
+	if (data != NULL) {
+		usb_mouse_free((usb_mouse_t **)&data);
+	}
+}
+
+/*----------------------------------------------------------------------------*/
+
+int usb_mouse_set_boot_protocol(usb_hid_dev_t *hid_dev)
+{
+	int rc = usb_hid_parse_report_descriptor(hid_dev->report, 
+	    USB_MOUSE_BOOT_REPORT_DESCRIPTOR, 
+	    USB_MOUSE_BOOT_REPORT_DESCRIPTOR_SIZE);
+	
+	if (rc != EOK) {
+		usb_log_error("Failed to parse boot report descriptor: %s\n",
+		    str_error(rc));
+		return rc;
+	}
+	
+	rc = usbhid_req_set_protocol(&hid_dev->usb_dev->ctrl_pipe, 
+	    hid_dev->usb_dev->interface_no, USB_HID_PROTOCOL_BOOT);
+	
+	if (rc != EOK) {
+		usb_log_warning("Failed to set boot protocol to the device: "
+		    "%s\n", str_error(rc));
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/mouse/mousedev.h
===================================================================
--- uspace/drv/usbhid/mouse/mousedev.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/mouse/mousedev.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB Mouse driver API.
+ */
+
+#ifndef USB_HID_MOUSEDEV_H_
+#define USB_HID_MOUSEDEV_H_
+
+#include <usb/dev/driver.h>
+
+struct usb_hid_dev;
+
+/*----------------------------------------------------------------------------*/
+
+/** Container for USB mouse device. */
+typedef struct {
+	/** IPC phone to console (consumer). */
+	int mouse_phone;
+	int wheel_phone;
+	
+	int32_t *buttons;
+	
+	ddf_dev_ops_t ops;
+} usb_mouse_t;
+
+/*----------------------------------------------------------------------------*/
+
+usb_endpoint_description_t usb_hid_mouse_poll_endpoint_description;
+
+const char *HID_MOUSE_FUN_NAME;
+const char *HID_MOUSE_CLASS_NAME;
+
+/*----------------------------------------------------------------------------*/
+
+int usb_mouse_init(struct usb_hid_dev *hid_dev, void **data);
+
+bool usb_mouse_polling_callback(struct usb_hid_dev *hid_dev, void *data, 
+    uint8_t *buffer, size_t buffer_size);
+
+void usb_mouse_deinit(struct usb_hid_dev *hid_dev, void *data);
+
+int usb_mouse_set_boot_protocol(struct usb_hid_dev *hid_dev);
+
+/*----------------------------------------------------------------------------*/
+
+#endif // USB_HID_MOUSEDEV_H_
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/multimedia/keymap.c
===================================================================
--- uspace/drv/usbhid/multimedia/keymap.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/multimedia/keymap.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * UUSB multimedia key to keycode mapping.
+ */
+
+#include <io/keycode.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <usb/debug.h>
+#include "keymap.h"
+
+/**
+ * Mapping between USB HID multimedia usages (from HID Usage Tables) and 
+ * corresponding HelenOS key codes.
+ *
+ * Currently only Usages used by Logitech UltraX keyboard are present. All other
+ * should result in 0.
+ */
+static int usb_hid_keymap_consumer[0x29c] = {
+	[0xb5] = 0,       /* Scan Next Track */
+	[0xb6] = 0,       /* Scan Previous Track */
+	[0xb7] = 0,       /* Stop */
+	[0xb8] = 0,       /* Eject */
+	[0xcd] = 0/*KC_F2*/,   /* Play/Pause */
+	[0xe2] = 0/*KC_F3*/,   /* Mute */
+	[0xe9] = 0/*KC_F5*/,   /* Volume Increment */
+	[0xea] = 0/*KC_F4*/,   /* Volume Decrement */
+	[0x183] = 0/*KC_F1*/,      /* AL Consumer Control Configuration */
+	[0x18a] = 0,      /* AL Email Reader */
+	[0x192] = 0,      /* AL Calculator */
+	[0x221] = 0,      /* AC Search */
+	[0x223] = 0/*KC_F6*/,      /* AC Home */
+	[0x224] = 0,      /* AC Back */
+	[0x225] = 0,      /* AC Forward */
+	[0x226] = 0,      /* AC Stop */
+	[0x227] = 0,  /* AC Refresh */
+	[0x22a] = 0   /* AC Bookmarks */
+};
+
+/**
+ * Translates USB HID Usages from the Consumer Page into HelenOS keycodes.
+ *
+ * @param usage USB HID Consumer Page Usage number.
+ * 
+ * @retval HelenOS key code corresponding to the given USB Consumer Page Usage.
+ */
+unsigned int usb_multimedia_map_usage(int usage)
+{
+	unsigned int key;
+	int *map = usb_hid_keymap_consumer;
+	size_t map_length = sizeof(usb_hid_keymap_consumer) / sizeof(int);
+
+	if ((usage < 0) || ((size_t)usage >= map_length))
+		return -1;
+
+	/*! @todo What if the usage is not in the table? */
+	key = map[usage];
+	
+	return key;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/multimedia/keymap.h
===================================================================
--- uspace/drv/usbhid/multimedia/keymap.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/multimedia/keymap.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB multimedia key to keycode mapping.
+ */
+
+#ifndef USB_HID_MULTIMEDIA_KEYMAP_H_
+#define USB_HID_MULTIMEDIA_KEYMAP_H_
+
+unsigned int usb_multimedia_map_usage(int usage);
+
+#endif /* USB_HID_MULTIMEDIA_KEYMAP_H_ */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/multimedia/multimedia.c
===================================================================
--- uspace/drv/usbhid/multimedia/multimedia.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/multimedia/multimedia.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,337 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak, Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/**
+ * @file
+ * USB Keyboard multimedia keys subdriver.
+ */
+
+
+#include "multimedia.h"
+#include "../usbhid.h"
+#include "keymap.h"
+
+#include <usb/hid/hidparser.h>
+#include <usb/debug.h>
+#include <usb/hid/usages/core.h>
+#include <usb/hid/usages/consumer.h>
+
+#include <errno.h>
+#include <str_error.h>
+
+#include <ipc/kbd.h>
+#include <io/console.h>
+
+#define NAME "multimedia-keys"
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Logitech UltraX device type.
+ */
+typedef struct usb_multimedia_t {
+	/** Previously pressed keys (not translated to key codes). */
+	//int32_t *keys_old;
+	/** Currently pressed keys (not translated to key codes). */
+	//int32_t *keys;
+	/** Count of stored keys (i.e. number of keys in the report). */
+	//size_t key_count;	
+	/** IPC phone to the console device (for sending key events). */
+	int console_phone;
+} usb_multimedia_t;
+
+
+/*----------------------------------------------------------------------------*/
+/** 
+ * Default handler for IPC methods not handled by DDF.
+ *
+ * Currently recognizes only one method (IPC_M_CONNECT_TO_ME), in which case it
+ * assumes the caller is the console and thus it stores IPC phone to it for 
+ * later use by the driver to notify about key events.
+ *
+ * @param fun Device function handling the call.
+ * @param icallid Call id.
+ * @param icall Call data.
+ */
+static void default_connection_handler(ddf_fun_t *fun,
+    ipc_callid_t icallid, ipc_call_t *icall)
+{
+	usb_log_debug(NAME " default_connection_handler()\n");
+	
+	sysarg_t method = IPC_GET_IMETHOD(*icall);
+	
+	usb_multimedia_t *multim_dev = (usb_multimedia_t *)fun->driver_data;
+	//usb_hid_dev_t *hid_dev = (usb_hid_dev_t *)fun->driver_data;
+	
+	if (multim_dev == NULL) {
+		async_answer_0(icallid, EINVAL);
+		return;
+	}
+
+	if (method == IPC_M_CONNECT_TO_ME) {
+		int callback = IPC_GET_ARG5(*icall);
+
+		if (multim_dev->console_phone != -1) {
+			async_answer_0(icallid, ELIMIT);
+			return;
+		}
+
+		multim_dev->console_phone = callback;
+		usb_log_debug(NAME " Saved phone to console: %d\n", callback);
+		async_answer_0(icallid, EOK);
+		return;
+	}
+	
+	async_answer_0(icallid, EINVAL);
+}
+
+/*----------------------------------------------------------------------------*/
+
+static ddf_dev_ops_t multimedia_ops = {
+	.default_handler = default_connection_handler
+};
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Processes key events.
+ *
+ * @note This function was copied from AT keyboard driver and modified to suit
+ *       USB keyboard.
+ *
+ * @note Lock keys are not sent to the console, as they are completely handled
+ *       in the driver. It may, however, be required later that the driver
+ *       sends also these keys to application (otherwise it cannot use those
+ *       keys at all).
+ * 
+ * @param hid_dev 
+ * @param lgtch_dev 
+ * @param type Type of the event (press / release). Recognized values: 
+ *             KEY_PRESS, KEY_RELEASE
+ * @param key Key code of the key according to HID Usage Tables.
+ */
+static void usb_multimedia_push_ev(usb_hid_dev_t *hid_dev, 
+    usb_multimedia_t *multim_dev, int type, unsigned int key)
+{
+	assert(hid_dev != NULL);
+	assert(multim_dev != NULL);
+	
+	console_event_t ev;
+	
+	ev.type = type;
+	ev.key = key;
+	ev.mods = 0;
+	ev.c = 0;
+
+	usb_log_debug2(NAME " Sending key %d to the console\n", ev.key);
+	if (multim_dev->console_phone < 0) {
+		usb_log_warning(
+		    "Connection to console not ready, key discarded.\n");
+		return;
+	}
+	
+	async_msg_4(multim_dev->console_phone, KBD_EVENT, ev.type, ev.key, 
+	    ev.mods, ev.c);
+}
+
+/*----------------------------------------------------------------------------*/
+
+static void usb_multimedia_free(usb_multimedia_t **multim_dev)
+{
+	if (multim_dev == NULL || *multim_dev == NULL) {
+		return;
+	}
+	
+	// hangup phone to the console
+	async_hangup((*multim_dev)->console_phone);
+
+	free(*multim_dev);
+	*multim_dev = NULL;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_multimedia_create_function(usb_hid_dev_t *hid_dev, 
+    usb_multimedia_t *multim_dev)
+{
+	/* Create the function exposed under /dev/devices. */
+	ddf_fun_t *fun = ddf_fun_create(hid_dev->usb_dev->ddf_dev, fun_exposed, 
+	    NAME);
+	if (fun == NULL) {
+		usb_log_error("Could not create DDF function node.\n");
+		return ENOMEM;
+	}
+	
+	fun->ops = &multimedia_ops;
+	fun->driver_data = multim_dev;   // TODO: maybe change to hid_dev->data
+	
+	int rc = ddf_fun_bind(fun);
+	if (rc != EOK) {
+		usb_log_error("Could not bind DDF function: %s.\n",
+		    str_error(rc));
+		// TODO: Can / should I destroy the DDF function?
+		ddf_fun_destroy(fun);
+		return rc;
+	}
+	
+	usb_log_debug("%s function created (jandle: %" PRIun ").\n",
+	    NAME, fun->handle);
+	
+	rc = ddf_fun_add_to_class(fun, "keyboard");
+	if (rc != EOK) {
+		usb_log_error(
+		    "Could not add DDF function to class 'keyboard': %s.\n",
+		    str_error(rc));
+		// TODO: Can / should I destroy the DDF function?
+		ddf_fun_destroy(fun);
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+int usb_multimedia_init(struct usb_hid_dev *hid_dev, void **data)
+{
+	if (hid_dev == NULL || hid_dev->usb_dev == NULL) {
+		return EINVAL; /*! @todo Other return code? */
+	}
+	
+	usb_log_debug(NAME " Initializing HID/multimedia structure...\n");
+	
+	usb_multimedia_t *multim_dev = (usb_multimedia_t *)malloc(
+	    sizeof(usb_multimedia_t));
+	if (multim_dev == NULL) {
+		return ENOMEM;
+	}
+	
+	multim_dev->console_phone = -1;
+	
+	/*! @todo Autorepeat */
+	
+	// save the KBD device structure into the HID device structure
+	*data = multim_dev;
+	
+	usb_log_debug(NAME " HID/multimedia device structure initialized.\n");
+	
+	int rc = usb_multimedia_create_function(hid_dev, multim_dev);
+	if (rc != EOK) {
+		usb_multimedia_free(&multim_dev);
+		return rc;
+	}
+	
+	usb_log_debug(NAME " HID/multimedia structure initialized.\n");
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+void usb_multimedia_deinit(struct usb_hid_dev *hid_dev, void *data)
+{
+	if (hid_dev == NULL) {
+		return;
+	}
+	
+	if (data != NULL) {
+		usb_multimedia_t *multim_dev = (usb_multimedia_t *)data;
+		usb_multimedia_free(&multim_dev);
+	}
+}
+
+/*----------------------------------------------------------------------------*/
+
+bool usb_multimedia_polling_callback(struct usb_hid_dev *hid_dev, void *data, 
+    uint8_t *buffer, size_t buffer_size)
+{
+	// TODO: checks
+	if (hid_dev == NULL || data == NULL || buffer == NULL) {
+		return false;
+	}
+	
+	usb_log_debug(NAME " usb_lgtch_polling_callback(%p, %p, %zu)\n",
+	    hid_dev, buffer, buffer_size);
+	
+	usb_multimedia_t *multim_dev = (usb_multimedia_t *)data;
+
+	usb_log_debug(NAME " Calling usb_hid_parse_report() with "
+	    "buffer %s\n", usb_debug_str_buffer(buffer, buffer_size, 0));
+	
+	usb_hid_report_path_t *path = usb_hid_report_path();
+	usb_hid_report_path_append_item(path, USB_HIDUT_PAGE_CONSUMER, 0);
+
+	uint8_t report_id;
+	
+	int rc = usb_hid_parse_report(hid_dev->report, buffer, buffer_size, 
+	    &report_id);
+	
+	if (rc != EOK) {
+		usb_log_warning(NAME "Error in usb_hid_parse_report(): %s\n", 
+		    str_error(rc));
+		return true;
+	}
+	
+	usb_hid_report_path_set_report_id(path, report_id);
+
+	usb_hid_report_field_t *field = usb_hid_report_get_sibling(
+	    hid_dev->report, NULL, path, USB_HID_PATH_COMPARE_END 
+	    | USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY, 
+	    USB_HID_REPORT_TYPE_INPUT);
+
+	/*! @todo Is this iterating OK if done multiple times? 
+	 *  @todo The parsing is not OK
+	 */
+	while (field != NULL) {
+		if(field->value != 0) {
+			usb_log_debug(NAME " KEY VALUE(%X) USAGE(%X)\n", 
+			    field->value, field->usage);
+			unsigned int key = 
+			    usb_multimedia_map_usage(field->usage);
+			const char *key_str = 
+			    usbhid_multimedia_usage_to_str(field->usage);
+			usb_log_info("Pressed key: %s\n", key_str);
+			usb_multimedia_push_ev(hid_dev, multim_dev, KEY_PRESS, 
+			                       key);
+		}
+		
+		field = usb_hid_report_get_sibling(
+		    hid_dev->report, field, path, USB_HID_PATH_COMPARE_END
+		    | USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY, 
+		    USB_HID_REPORT_TYPE_INPUT);
+	}	
+
+	usb_hid_report_path_free(path);
+	
+	return true;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/multimedia/multimedia.h
===================================================================
--- uspace/drv/usbhid/multimedia/multimedia.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/multimedia/multimedia.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB Keyboard multimedia keys subdriver.
+ */
+
+#ifndef USB_HID_MULTIMEDIA_H_
+#define USB_HID_MULTIMEDIA_H_
+
+#include <usb/dev/driver.h>
+
+struct usb_hid_dev;
+
+/*----------------------------------------------------------------------------*/
+
+int usb_multimedia_init(struct usb_hid_dev *hid_dev, void **data);
+
+void usb_multimedia_deinit(struct usb_hid_dev *hid_dev, void *data);
+
+bool usb_multimedia_polling_callback(struct usb_hid_dev *hid_dev, void *data,
+    uint8_t *buffer, size_t buffer_size);
+
+/*----------------------------------------------------------------------------*/
+
+#endif // USB_HID_MULTIMEDIA_H_
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/subdrivers.c
===================================================================
--- uspace/drv/usbhid/subdrivers.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/subdrivers.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB HID subdriver mappings.
+ */
+
+#include "subdrivers.h"
+#include <usb/hid/usages/core.h>
+#include <usb/hid/hidpath.h>
+
+#include "multimedia/multimedia.h"
+#include "mouse/mousedev.h"
+#include "generic/hiddev.h"
+
+static usb_hid_subdriver_usage_t path_kbd[] = {
+	{USB_HIDUT_PAGE_GENERIC_DESKTOP, 
+	 USB_HIDUT_USAGE_GENERIC_DESKTOP_KEYBOARD}, 
+	{0, 0}
+};
+
+static usb_hid_subdriver_usage_t path_mouse[] = {
+	{USB_HIDUT_PAGE_GENERIC_DESKTOP, USB_HIDUT_USAGE_GENERIC_DESKTOP_MOUSE},
+	{0, 0}
+};
+
+static usb_hid_subdriver_usage_t multim_key_path[] = {
+	{USB_HIDUT_PAGE_CONSUMER, USB_HIDUT_USAGE_CONSUMER_CONSUMER_CONTROL},
+	{0, 0}
+};
+
+const usb_hid_subdriver_mapping_t usb_hid_subdrivers[] = {
+	{
+		path_kbd,
+		0,
+		USB_HID_PATH_COMPARE_BEGIN,
+		-1,
+		-1,
+		{
+			.init = usb_kbd_init,
+			.deinit = usb_kbd_deinit,
+			.poll = usb_kbd_polling_callback,
+			.poll_end = NULL
+		},
+		
+	},
+	{
+		multim_key_path,
+		1,
+		USB_HID_PATH_COMPARE_BEGIN,
+		-1,
+		-1,
+		{
+			.init = usb_multimedia_init,
+			.deinit = usb_multimedia_deinit,
+			.poll = usb_multimedia_polling_callback,
+			.poll_end = NULL
+		}
+	},
+	{
+		path_mouse,
+		0,
+		USB_HID_PATH_COMPARE_BEGIN,
+		-1,
+		-1,
+		{
+			.init = usb_mouse_init,
+			.deinit = usb_mouse_deinit,
+			.poll = usb_mouse_polling_callback,
+			.poll_end = NULL
+		}
+	},
+	{NULL, -1, 0, -1, -1, {NULL, NULL, NULL, NULL, NULL}}
+};
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/subdrivers.h
===================================================================
--- uspace/drv/usbhid/subdrivers.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/subdrivers.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB HID subdriver mappings.
+ */
+
+#ifndef USB_HID_SUBDRIVERS_H_
+#define USB_HID_SUBDRIVERS_H_
+
+#include "usbhid.h"
+#include "kbd/kbddev.h"
+
+/*----------------------------------------------------------------------------*/
+
+typedef struct usb_hid_subdriver_usage {
+	int usage_page;
+	int usage;
+} usb_hid_subdriver_usage_t;
+
+/*----------------------------------------------------------------------------*/
+
+/* TODO: This mapping must contain some other information to get the proper
+ *       interface.
+ */
+typedef struct usb_hid_subdriver_mapping {
+	const usb_hid_subdriver_usage_t *usage_path;
+	int report_id;
+	int compare;
+	int vendor_id;
+	int product_id;
+	usb_hid_subdriver_t subdriver;
+} usb_hid_subdriver_mapping_t;
+
+/*----------------------------------------------------------------------------*/
+
+extern const usb_hid_subdriver_mapping_t usb_hid_subdrivers[];
+
+/*----------------------------------------------------------------------------*/
+
+#endif /* USB_HID_SUBDRIVERS_H_ */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/usbhid.c
===================================================================
--- uspace/drv/usbhid/usbhid.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/usbhid.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,678 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/**
+ * @file
+ * USB HID driver API.
+ */
+
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+#include <usb/hid/hid.h>
+#include <usb/hid/hidparser.h>
+#include <usb/hid/hidreport.h>
+#include <usb/hid/request.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include "usbhid.h"
+
+#include "kbd/kbddev.h"
+#include "generic/hiddev.h"
+#include "mouse/mousedev.h"
+#include "subdrivers.h"
+
+/*----------------------------------------------------------------------------*/
+
+/* Array of endpoints expected on the device, NULL terminated. */
+usb_endpoint_description_t *usb_hid_endpoints[USB_HID_POLL_EP_COUNT + 1] = {
+	&usb_hid_kbd_poll_endpoint_description,
+	&usb_hid_mouse_poll_endpoint_description,
+	&usb_hid_generic_poll_endpoint_description,
+	NULL
+};
+
+static const int USB_HID_MAX_SUBDRIVERS = 10;
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_hid_set_boot_kbd_subdriver(usb_hid_dev_t *hid_dev)
+{
+	assert(hid_dev != NULL && hid_dev->subdriver_count == 0);
+	
+	hid_dev->subdrivers = (usb_hid_subdriver_t *)malloc(
+	    sizeof(usb_hid_subdriver_t));
+	if (hid_dev->subdrivers == NULL) {
+		return ENOMEM;
+	}
+	
+	assert(hid_dev->subdriver_count >= 0);
+	
+	// set the init callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].init = usb_kbd_init;
+	
+	// set the polling callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].poll = 
+	    usb_kbd_polling_callback;
+	
+	// set the polling ended callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].poll_end = NULL;
+	
+	// set the deinit callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].deinit = usb_kbd_deinit;
+	
+	// set subdriver count
+	++hid_dev->subdriver_count;
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_hid_set_boot_mouse_subdriver(usb_hid_dev_t *hid_dev)
+{
+	assert(hid_dev != NULL && hid_dev->subdriver_count == 0);
+	
+	hid_dev->subdrivers = (usb_hid_subdriver_t *)malloc(
+	    sizeof(usb_hid_subdriver_t));
+	if (hid_dev->subdrivers == NULL) {
+		return ENOMEM;
+	}
+	
+	assert(hid_dev->subdriver_count >= 0);
+	
+	// set the init callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].init = usb_mouse_init;
+	
+	// set the polling callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].poll = 
+	    usb_mouse_polling_callback;
+	
+	// set the polling ended callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].poll_end = NULL;
+	
+	// set the deinit callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].deinit = usb_mouse_deinit;
+	
+	// set subdriver count
+	++hid_dev->subdriver_count;
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_hid_set_generic_hid_subdriver(usb_hid_dev_t *hid_dev)
+{
+	assert(hid_dev != NULL && hid_dev->subdriver_count == 0);
+	
+	hid_dev->subdrivers = (usb_hid_subdriver_t *)malloc(
+	    sizeof(usb_hid_subdriver_t));
+	if (hid_dev->subdrivers == NULL) {
+		return ENOMEM;
+	}
+	
+	assert(hid_dev->subdriver_count >= 0);
+	
+	// set the init callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].init =
+	    usb_generic_hid_init;
+	
+	// set the polling callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].poll = 
+	    usb_generic_hid_polling_callback;
+	
+	// set the polling ended callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].poll_end = NULL;
+	
+	// set the deinit callback
+	hid_dev->subdrivers[hid_dev->subdriver_count].deinit = NULL;
+	
+	// set subdriver count
+	++hid_dev->subdriver_count;
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static bool usb_hid_ids_match(usb_hid_dev_t *hid_dev, 
+    const usb_hid_subdriver_mapping_t *mapping)
+{
+	assert(hid_dev != NULL);
+	assert(hid_dev->usb_dev != NULL);
+	
+	return (hid_dev->usb_dev->descriptors.device.vendor_id 
+	    == mapping->vendor_id
+	    && hid_dev->usb_dev->descriptors.device.product_id 
+	    == mapping->product_id);
+}
+
+/*----------------------------------------------------------------------------*/
+
+static bool usb_hid_path_matches(usb_hid_dev_t *hid_dev, 
+    const usb_hid_subdriver_mapping_t *mapping)
+{
+	assert(hid_dev != NULL);
+	assert(mapping != NULL);
+	
+	usb_hid_report_path_t *usage_path = usb_hid_report_path();
+	if (usage_path == NULL) {
+		usb_log_debug("Failed to create usage path.\n");
+		return false;
+	}
+	int i = 0;
+	while (mapping->usage_path[i].usage != 0 
+	    || mapping->usage_path[i].usage_page != 0) {
+		if (usb_hid_report_path_append_item(usage_path, 
+		    mapping->usage_path[i].usage_page, 
+		    mapping->usage_path[i].usage) != EOK) {
+			usb_log_debug("Failed to append to usage path.\n");
+			usb_hid_report_path_free(usage_path);
+			return false;
+		}
+		++i;
+	}
+	
+	assert(hid_dev->report != NULL);
+	
+	usb_log_debug("Compare flags: %d\n", mapping->compare);
+	
+	bool matches = false;
+	uint8_t report_id = mapping->report_id;
+
+	do {
+		usb_log_debug("Trying report id %u\n", report_id);
+		
+		if (report_id != 0) {
+			usb_hid_report_path_set_report_id(usage_path,
+				report_id);
+		}
+
+		usb_hid_report_field_t *field = usb_hid_report_get_sibling(
+		    hid_dev->report,
+		    NULL, usage_path, mapping->compare, 
+		    USB_HID_REPORT_TYPE_INPUT);
+		
+		usb_log_debug("Field: %p\n", field);
+
+		if (field != NULL) {
+			matches = true;
+			break;
+		}
+		
+		report_id = usb_hid_get_next_report_id(
+		    hid_dev->report, report_id,
+		    USB_HID_REPORT_TYPE_INPUT);
+	} while (!matches && report_id != 0);
+	
+	usb_hid_report_path_free(usage_path);
+	
+	return matches;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_hid_save_subdrivers(usb_hid_dev_t *hid_dev, 
+    const usb_hid_subdriver_t **subdrivers, int count)
+{
+	int i;
+	
+	if (count <= 0) {
+		hid_dev->subdriver_count = 0;
+		hid_dev->subdrivers = NULL;
+		return EOK;
+	}
+	
+	// add one generic HID subdriver per device
+	
+	hid_dev->subdrivers = (usb_hid_subdriver_t *)malloc((count + 1) * 
+	    sizeof(usb_hid_subdriver_t));
+	if (hid_dev->subdrivers == NULL) {
+		return ENOMEM;
+	}
+	
+	for (i = 0; i < count; ++i) {
+		hid_dev->subdrivers[i].init = subdrivers[i]->init;
+		hid_dev->subdrivers[i].deinit = subdrivers[i]->deinit;
+		hid_dev->subdrivers[i].poll = subdrivers[i]->poll;
+		hid_dev->subdrivers[i].poll_end = subdrivers[i]->poll_end;
+	}
+	
+	hid_dev->subdrivers[count].init = usb_generic_hid_init;
+	hid_dev->subdrivers[count].poll = usb_generic_hid_polling_callback;
+	hid_dev->subdrivers[count].deinit = NULL;
+	hid_dev->subdrivers[count].poll_end = NULL;
+	
+	hid_dev->subdriver_count = count + 1;
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_hid_find_subdrivers(usb_hid_dev_t *hid_dev)
+{
+	assert(hid_dev != NULL);
+	
+	const usb_hid_subdriver_t *subdrivers[USB_HID_MAX_SUBDRIVERS];
+	
+	int i = 0, count = 0;
+	const usb_hid_subdriver_mapping_t *mapping = &usb_hid_subdrivers[i];
+
+	bool ids_matched;
+	bool matched;
+	
+	while (count < USB_HID_MAX_SUBDRIVERS &&
+	    (mapping->usage_path != NULL
+	    || mapping->vendor_id >= 0 || mapping->product_id >= 0)) {
+		// check the vendor & product ID
+		if (mapping->vendor_id >= 0 && mapping->product_id < 0) {
+			usb_log_warning("Missing Product ID for Vendor ID %d\n",
+			    mapping->vendor_id);
+			return EINVAL;
+		}
+		if (mapping->product_id >= 0 && mapping->vendor_id < 0) {
+			usb_log_warning("Missing Vendor ID for Product ID %d\n",
+			    mapping->product_id);
+			return EINVAL;
+		}
+		
+		ids_matched = false;
+		matched = false;
+		
+		if (mapping->vendor_id >= 0) {
+			assert(mapping->product_id >= 0);
+			usb_log_debug("Comparing device against vendor ID %u"
+			    " and product ID %u.\n", mapping->vendor_id,
+			    mapping->product_id);
+			if (usb_hid_ids_match(hid_dev, mapping)) {
+				usb_log_debug("IDs matched.\n");
+				ids_matched = true;
+			}
+		}
+		
+		if (mapping->usage_path != NULL) {
+			usb_log_debug("Comparing device against usage path.\n");
+			if (usb_hid_path_matches(hid_dev, mapping)) {
+				// does not matter if IDs were matched
+				matched = true;
+			}
+		} else {
+			// matched only if IDs were matched and there is no path
+			matched = ids_matched;
+		}
+		
+		if (matched) {
+			usb_log_debug("Subdriver matched.\n");
+			subdrivers[count++] = &mapping->subdriver;
+		}
+		
+		mapping = &usb_hid_subdrivers[++i];
+	}
+	
+	// we have all subdrivers determined, save them into the hid device
+	return usb_hid_save_subdrivers(hid_dev, subdrivers, count);
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_hid_check_pipes(usb_hid_dev_t *hid_dev, usb_device_t *dev)
+{
+	assert(hid_dev != NULL && dev != NULL);
+	
+	int rc = EOK;
+	
+	if (dev->pipes[USB_HID_KBD_POLL_EP_NO].present) {
+		usb_log_debug("Found keyboard endpoint.\n");
+		// save the pipe index
+		hid_dev->poll_pipe_index = USB_HID_KBD_POLL_EP_NO;
+	} else if (dev->pipes[USB_HID_MOUSE_POLL_EP_NO].present) {
+		usb_log_debug("Found mouse endpoint.\n");
+		// save the pipe index
+		hid_dev->poll_pipe_index = USB_HID_MOUSE_POLL_EP_NO;
+	} else if (dev->pipes[USB_HID_GENERIC_POLL_EP_NO].present) {
+		usb_log_debug("Found generic HID endpoint.\n");
+		// save the pipe index
+		hid_dev->poll_pipe_index = USB_HID_GENERIC_POLL_EP_NO;
+	} else {
+		usb_log_error("None of supported endpoints found - probably"
+		    " not a supported device.\n");
+		rc = ENOTSUP;
+	}
+	
+	return rc;
+}
+
+/*----------------------------------------------------------------------------*/
+
+static int usb_hid_init_report(usb_hid_dev_t *hid_dev)
+{
+	assert(hid_dev != NULL && hid_dev->report != NULL);
+	
+	uint8_t report_id = 0;
+	size_t size;
+	
+	size_t max_size = 0;
+	
+	do {
+		usb_log_debug("Getting size of the report.\n");
+		size = usb_hid_report_byte_size(hid_dev->report, report_id, 
+		    USB_HID_REPORT_TYPE_INPUT);
+		usb_log_debug("Report ID: %u, size: %zu\n", report_id, size);
+		max_size = (size > max_size) ? size : max_size;
+		usb_log_debug("Getting next report ID\n");
+		report_id = usb_hid_get_next_report_id(hid_dev->report, 
+		    report_id, USB_HID_REPORT_TYPE_INPUT);
+	} while (report_id != 0);
+	
+	usb_log_debug("Max size of input report: %zu\n", max_size);
+	
+	hid_dev->max_input_report_size = max_size;
+	assert(hid_dev->input_report == NULL);
+	
+	hid_dev->input_report = malloc(max_size);
+	if (hid_dev->input_report == NULL) {
+		return ENOMEM;
+	}
+	memset(hid_dev->input_report, 0, max_size);
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+usb_hid_dev_t *usb_hid_new(void)
+{
+	usb_hid_dev_t *hid_dev = (usb_hid_dev_t *)calloc(1,
+	    sizeof(usb_hid_dev_t));
+	
+	if (hid_dev == NULL) {
+		usb_log_fatal("No memory!\n");
+		return NULL;
+	}
+	
+	hid_dev->report = (usb_hid_report_t *)(malloc(sizeof(
+	    usb_hid_report_t)));
+	if (hid_dev->report == NULL) {
+		usb_log_fatal("No memory!\n");
+		free(hid_dev);
+		return NULL;
+	}
+	
+	hid_dev->poll_pipe_index = -1;
+	
+	return hid_dev;
+}
+
+/*----------------------------------------------------------------------------*/
+
+int usb_hid_init(usb_hid_dev_t *hid_dev, usb_device_t *dev)
+{
+	int rc, i;
+	
+	usb_log_debug("Initializing HID structure...\n");
+	
+	if (hid_dev == NULL) {
+		usb_log_error("Failed to init HID structure: no structure given"
+		    ".\n");
+		return EINVAL;
+	}
+	
+	if (dev == NULL) {
+		usb_log_error("Failed to init HID structure: no USB device"
+		    " given.\n");
+		return EINVAL;
+	}
+	
+	/* The USB device should already be initialized, save it in structure */
+	hid_dev->usb_dev = dev;
+	
+	rc = usb_hid_check_pipes(hid_dev, dev);
+	if (rc != EOK) {
+		return rc;
+	}
+		
+	/* Get the report descriptor and parse it. */
+	rc = usb_hid_process_report_descriptor(hid_dev->usb_dev, 
+	    hid_dev->report, &hid_dev->report_desc, &hid_dev->report_desc_size);
+	
+	bool fallback = false;
+	
+	if (rc == EOK) {
+		// try to find subdrivers that may want to handle this device
+		rc = usb_hid_find_subdrivers(hid_dev);
+		if (rc != EOK || hid_dev->subdriver_count == 0) {
+			// try to fall back to the boot protocol if available
+			usb_log_info("No subdrivers found to handle this"
+			    " device.\n");
+			fallback = true;
+			assert(hid_dev->subdrivers == NULL);
+			assert(hid_dev->subdriver_count == 0);
+		}
+	} else {
+		usb_log_error("Failed to parse Report descriptor.\n");
+		// try to fall back to the boot protocol if available
+		fallback = true;
+	}
+	
+	if (fallback) {
+		// fall back to boot protocol
+		switch (hid_dev->poll_pipe_index) {
+		case USB_HID_KBD_POLL_EP_NO:
+			usb_log_info("Falling back to kbd boot protocol.\n");
+			rc = usb_kbd_set_boot_protocol(hid_dev);
+			if (rc == EOK) {
+				rc = usb_hid_set_boot_kbd_subdriver(hid_dev);
+			}
+			break;
+		case USB_HID_MOUSE_POLL_EP_NO:
+			usb_log_info("Falling back to mouse boot protocol.\n");
+			rc = usb_mouse_set_boot_protocol(hid_dev);
+			if (rc == EOK) {
+				rc = usb_hid_set_boot_mouse_subdriver(hid_dev);
+			}
+			break;
+		default:
+			assert(hid_dev->poll_pipe_index 
+			    == USB_HID_GENERIC_POLL_EP_NO);
+			
+			usb_log_info("Falling back to generic HID driver.\n");
+			rc = usb_hid_set_generic_hid_subdriver(hid_dev);
+		}
+	}
+	
+	if (rc != EOK) {
+		usb_log_error("No subdriver for handling this device could be"
+		    " initialized: %s.\n", str_error(rc));
+		usb_log_debug("Subdriver count: %d\n", 
+		    hid_dev->subdriver_count);
+		
+	} else {
+		bool ok = false;
+		
+		usb_log_debug("Subdriver count: %d\n", 
+		    hid_dev->subdriver_count);
+		
+		for (i = 0; i < hid_dev->subdriver_count; ++i) {
+			if (hid_dev->subdrivers[i].init != NULL) {
+				usb_log_debug("Initializing subdriver %d.\n",i);
+				rc = hid_dev->subdrivers[i].init(hid_dev,
+				    &hid_dev->subdrivers[i].data);
+				if (rc != EOK) {
+					usb_log_warning("Failed to initialize"
+					    " HID subdriver structure.\n");
+				} else {
+					// at least one subdriver initialized
+					ok = true;
+				}
+			} else {
+				ok = true;
+			}
+		}
+		
+		rc = (ok) ? EOK : -1;	// what error to report
+	}
+	
+	
+	if (rc == EOK) {
+		// save max input report size and allocate space for the report
+		rc = usb_hid_init_report(hid_dev);
+		if (rc != EOK) {
+			usb_log_error("Failed to initialize input report buffer"
+			    ".\n");
+		}
+	}
+	
+	
+	return rc;
+}
+
+/*----------------------------------------------------------------------------*/
+
+bool usb_hid_polling_callback(usb_device_t *dev, uint8_t *buffer, 
+    size_t buffer_size, void *arg)
+{
+	int i;
+	
+	if (dev == NULL || arg == NULL || buffer == NULL) {
+		usb_log_error("Missing arguments to polling callback.\n");
+		return false;
+	}
+	
+	usb_hid_dev_t *hid_dev = (usb_hid_dev_t *)arg;
+	
+	assert(hid_dev->input_report != NULL);
+	usb_log_debug("Max input report size: %zu, buffer size: %zu\n",
+	    hid_dev->max_input_report_size, buffer_size);
+
+	if (hid_dev->max_input_report_size >= buffer_size) {
+		/*! @todo This should probably be atomic. */
+		memcpy(hid_dev->input_report, buffer, buffer_size);
+		hid_dev->input_report_size = buffer_size;
+		usb_hid_new_report(hid_dev);
+	}
+	
+	bool cont = false;
+	
+	// continue if at least one of the subdrivers want to continue
+	for (i = 0; i < hid_dev->subdriver_count; ++i) {
+		if (hid_dev->subdrivers[i].poll != NULL
+		    && hid_dev->subdrivers[i].poll(hid_dev, 
+		        hid_dev->subdrivers[i].data, buffer, buffer_size)) {
+			cont = true;
+		}
+	}
+	
+	return cont;
+}
+
+/*----------------------------------------------------------------------------*/
+
+void usb_hid_polling_ended_callback(usb_device_t *dev, bool reason, 
+     void *arg)
+{
+	int i; 
+	
+	if (dev == NULL || arg == NULL) {
+		return;
+	}
+	
+	usb_hid_dev_t *hid_dev = (usb_hid_dev_t *)arg;
+	
+	for (i = 0; i < hid_dev->subdriver_count; ++i) {
+		if (hid_dev->subdrivers[i].poll_end != NULL) {
+			hid_dev->subdrivers[i].poll_end(hid_dev,
+			    hid_dev->subdrivers[i].data, reason);
+		}
+	}
+	
+	usb_hid_free(&hid_dev);
+}
+
+/*----------------------------------------------------------------------------*/
+
+void usb_hid_new_report(usb_hid_dev_t *hid_dev)
+{
+	++hid_dev->report_nr;
+}
+
+/*----------------------------------------------------------------------------*/
+
+int usb_hid_report_number(usb_hid_dev_t *hid_dev)
+{
+	return hid_dev->report_nr;
+}
+
+/*----------------------------------------------------------------------------*/
+
+void usb_hid_free(usb_hid_dev_t **hid_dev)
+{
+	int i;
+	
+	if (hid_dev == NULL || *hid_dev == NULL) {
+		return;
+	}
+	
+	usb_log_debug("Subdrivers: %p, subdriver count: %d\n", 
+	    (*hid_dev)->subdrivers, (*hid_dev)->subdriver_count);
+	
+	assert((*hid_dev)->subdrivers != NULL 
+	    || (*hid_dev)->subdriver_count == 0);
+	
+	for (i = 0; i < (*hid_dev)->subdriver_count; ++i) {
+		if ((*hid_dev)->subdrivers[i].deinit != NULL) {
+			(*hid_dev)->subdrivers[i].deinit(*hid_dev,
+			    (*hid_dev)->subdrivers[i].data);
+		}
+	}
+	
+	// free the subdrivers info
+	if ((*hid_dev)->subdrivers != NULL) {
+		free((*hid_dev)->subdrivers);
+	}
+
+	// destroy the parser
+	if ((*hid_dev)->report != NULL) {
+		usb_hid_free_report((*hid_dev)->report);
+	}
+
+	if ((*hid_dev)->report_desc != NULL) {
+		free((*hid_dev)->report_desc);
+	}
+
+	free(*hid_dev);
+	*hid_dev = NULL;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/usbhid.h
===================================================================
--- uspace/drv/usbhid/usbhid.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/usbhid.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * USB HID driver API.
+ */
+
+#ifndef USB_HID_USBHID_H_
+#define USB_HID_USBHID_H_
+
+#include <stdint.h>
+
+#include <usb/hid/hidparser.h>
+#include <ddf/driver.h>
+#include <usb/dev/pipes.h>
+#include <usb/dev/driver.h>
+#include <usb/hid/hid.h>
+#include <bool.h>
+
+struct usb_hid_dev;
+
+typedef int (*usb_hid_driver_init_t)(struct usb_hid_dev *, void **data);
+typedef void (*usb_hid_driver_deinit_t)(struct usb_hid_dev *, void *data);
+typedef bool (*usb_hid_driver_poll)(struct usb_hid_dev *, void *data, uint8_t *,
+                                    size_t);
+typedef int (*usb_hid_driver_poll_ended)(struct usb_hid_dev *, void *data, 
+                                         bool reason);
+
+typedef struct usb_hid_subdriver {	
+	/** Function to be called when initializing HID device. */
+	usb_hid_driver_init_t init;
+	/** Function to be called when destroying the HID device structure. */
+	usb_hid_driver_deinit_t deinit;
+	/** Function to be called when data arrives from the device. */
+	usb_hid_driver_poll poll;
+	/** Function to be called when polling ends. */
+	usb_hid_driver_poll_ended poll_end;
+	/** Arbitrary data needed by the subdriver. */
+	void *data;
+} usb_hid_subdriver_t;
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Structure for holding general HID device data.
+ */
+typedef struct usb_hid_dev {
+	/** Structure holding generic USB device information. */
+	usb_device_t *usb_dev;
+	
+	/** Index of the polling pipe in usb_hid_endpoints array. */
+	int poll_pipe_index;
+	
+	/** Subdrivers. */
+	usb_hid_subdriver_t *subdrivers;
+	
+	/** Number of subdrivers. */
+	int subdriver_count;
+	
+	/** Report descriptor. */
+	uint8_t *report_desc;
+
+	/** Report descriptor size. */
+	size_t report_desc_size;
+	
+	/** HID Report parser. */
+	usb_hid_report_t *report;
+	
+	uint8_t *input_report;
+	
+	size_t input_report_size;
+	size_t max_input_report_size;
+	
+	int report_nr;
+} usb_hid_dev_t;
+
+/*----------------------------------------------------------------------------*/
+
+enum {
+	USB_HID_KBD_POLL_EP_NO = 0,
+	USB_HID_MOUSE_POLL_EP_NO = 1,
+	USB_HID_GENERIC_POLL_EP_NO = 2,
+	USB_HID_POLL_EP_COUNT = 3
+};
+
+usb_endpoint_description_t *usb_hid_endpoints[USB_HID_POLL_EP_COUNT + 1];
+
+/*----------------------------------------------------------------------------*/
+
+usb_hid_dev_t *usb_hid_new(void);
+
+int usb_hid_init(usb_hid_dev_t *hid_dev, usb_device_t *dev);
+
+bool usb_hid_polling_callback(usb_device_t *dev, uint8_t *buffer, 
+    size_t buffer_size, void *arg);
+
+void usb_hid_polling_ended_callback(usb_device_t *dev, bool reason, 
+     void *arg);
+
+void usb_hid_new_report(usb_hid_dev_t *hid_dev);
+
+int usb_hid_report_number(usb_hid_dev_t *hid_dev);
+
+void usb_hid_free(usb_hid_dev_t **hid_dev);
+
+#endif /* USB_HID_USBHID_H_ */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhid/usbhid.ma
===================================================================
--- uspace/drv/usbhid/usbhid.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhid/usbhid.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,3 @@
+100 usb&interface&class=HID&subclass=0x01&protocol=0x01
+1000 usb&interface&class=HID&subclass=0x01&protocol=0x02
+100 usb&interface&class=HID
Index: uspace/drv/usbhub/Makefile
===================================================================
--- uspace/drv/usbhub/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhub/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,48 @@
+#
+# Copyright (c) 2010 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+
+LIBS = \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+BINARY = usbhub
+
+SOURCES = \
+	main.c \
+	utils.c \
+	usbhub.c \
+	ports.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/usbhub/main.c
===================================================================
--- uspace/drv/usbhub/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhub/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhub
+ * @{
+ */
+
+#include <ddf/driver.h>
+#include <errno.h>
+#include <async.h>
+#include <stdio.h>
+
+#include <usb/dev/driver.h>
+#include <usb/classes/classes.h>
+
+#include "usbhub.h"
+#include "usbhub_private.h"
+
+/** Hub status-change endpoint description.
+ *
+ * For more information see section 11.15.1 of USB 1.1 specification.
+ */
+static usb_endpoint_description_t hub_status_change_endpoint_description = {
+	.transfer_type = USB_TRANSFER_INTERRUPT,
+	.direction = USB_DIRECTION_IN,
+	.interface_class = USB_CLASS_HUB,
+	.interface_subclass = 0,
+	.interface_protocol = 0,
+	.flags = 0
+};
+
+/**
+ * usb hub driver operations
+ *
+ * The most important one is add_device, which is set to usb_hub_add_device.
+ */
+static usb_driver_ops_t usb_hub_driver_ops = {
+	.add_device = usb_hub_add_device
+};
+
+/**
+ * hub endpoints, excluding control endpoint
+ */
+static usb_endpoint_description_t *usb_hub_endpoints[] = {
+	&hub_status_change_endpoint_description,
+	NULL
+};
+
+/**
+ * static usb hub driver information
+ */
+static usb_driver_t usb_hub_driver = {
+	.name = NAME,
+	.ops = &usb_hub_driver_ops,
+	.endpoints = usb_hub_endpoints
+};
+
+
+int main(int argc, char *argv[])
+{
+	printf(NAME ": HelenOS USB hub driver.\n");
+
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+
+	return usb_driver_main(&usb_hub_driver);
+}
+
+/**
+ * @}
+ */
+
Index: uspace/drv/usbhub/port_status.h
===================================================================
--- uspace/drv/usbhub/port_status.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhub/port_status.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,360 @@
+/*
+ * Copyright (c) 2010 Matus Dekanek
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbhub
+ * @{
+ */
+
+#ifndef HUB_PORT_STATUS_H
+#define	HUB_PORT_STATUS_H
+
+#include <bool.h>
+#include <sys/types.h>
+#include <usb/dev/request.h>
+#include "usbhub_private.h"
+
+/**
+ * structure holding port status and changes flags.
+ * should not be accessed directly, use supplied getter/setter methods.
+ *
+ * For more information refer to table 11-15 in
+ * "Universal Serial Bus Specification Revision 1.1"
+ *
+ */
+typedef uint32_t usb_port_status_t;
+
+/**
+ * structure holding hub status and changes flags.
+ * should not be accessed directly, use supplied getter/setter methods.
+ *
+ * For more information refer to table 11.16.2.5 in
+ * "Universal Serial Bus Specification Revision 1.1"
+ *
+ */
+typedef uint32_t usb_hub_status_t;
+
+/**
+ * set values in request to be it a port status request
+ * @param request
+ * @param port
+ */
+static inline void usb_hub_set_port_status_request(
+    usb_device_request_setup_packet_t *request, uint16_t port) {
+	request->index = port;
+	request->request_type = USB_HUB_REQ_TYPE_GET_PORT_STATUS;
+	request->request = USB_HUB_REQUEST_GET_STATUS;
+	request->value = 0;
+	request->length = 4;
+}
+
+/**
+ * set values in request to be it a port status request
+ * @param request
+ * @param port
+ */
+static inline void usb_hub_set_hub_status_request(
+    usb_device_request_setup_packet_t *request) {
+	request->index = 0;
+	request->request_type = USB_HUB_REQ_TYPE_GET_HUB_STATUS;
+	request->request = USB_HUB_REQUEST_GET_STATUS;
+	request->value = 0;
+	request->length = 4;
+}
+
+/**
+ * create request for usb hub port status
+ * @param port
+ * @return
+ */
+static inline usb_device_request_setup_packet_t *
+usb_hub_create_port_status_request(uint16_t port) {
+	usb_device_request_setup_packet_t *result =
+	    malloc(sizeof (usb_device_request_setup_packet_t));
+	usb_hub_set_port_status_request(result, port);
+	return result;
+}
+
+/**
+ * set the device request to be a port feature enable request
+ * @param request
+ * @param port
+ * @param feature_selector
+ */
+static inline void usb_hub_set_enable_port_feature_request(
+    usb_device_request_setup_packet_t *request, uint16_t port,
+    uint16_t feature_selector) {
+	request->index = port;
+	request->request_type = USB_HUB_REQ_TYPE_SET_PORT_FEATURE;
+	request->request = USB_HUB_REQUEST_SET_FEATURE;
+	request->value = feature_selector;
+	request->length = 0;
+}
+
+/**
+ * set the device request to be a port feature clear request
+ * @param request
+ * @param port
+ * @param feature_selector
+ */
+static inline void usb_hub_set_disable_port_feature_request(
+    usb_device_request_setup_packet_t *request, uint16_t port,
+    uint16_t feature_selector
+    ) {
+	request->index = port;
+	request->request_type = USB_HUB_REQ_TYPE_SET_PORT_FEATURE;
+	request->request = USB_HUB_REQUEST_CLEAR_FEATURE;
+	request->value = feature_selector;
+	request->length = 0;
+}
+
+/**
+ * set the device request to be a port enable request
+ * @param request
+ * @param port
+ */
+static inline void usb_hub_set_enable_port_request(
+    usb_device_request_setup_packet_t *request, uint16_t port
+    ) {
+	request->index = port;
+	request->request_type = USB_HUB_REQ_TYPE_SET_PORT_FEATURE;
+	request->request = USB_HUB_REQUEST_SET_FEATURE;
+	request->value = USB_HUB_FEATURE_C_PORT_ENABLE;
+	request->length = 0;
+}
+
+/**
+ * enable specified port
+ * @param port
+ * @return
+ */
+static inline usb_device_request_setup_packet_t *
+usb_hub_create_enable_port_request(uint16_t port) {
+	usb_device_request_setup_packet_t *result =
+	    malloc(sizeof (usb_device_request_setup_packet_t));
+	usb_hub_set_enable_port_request(result, port);
+	return result;
+}
+
+/**
+ * set the device request to be a port disable request
+ * @param request
+ * @param port
+ */
+static inline void usb_hub_set_disable_port_request(
+    usb_device_request_setup_packet_t *request, uint16_t port
+    ) {
+	request->index = port;
+	request->request_type = USB_HUB_REQ_TYPE_SET_PORT_FEATURE;
+	request->request = USB_HUB_REQUEST_SET_FEATURE;
+	request->value = USB_HUB_FEATURE_C_PORT_SUSPEND;
+	request->length = 0;
+}
+
+/**
+ * disable specified port
+ * @param port
+ * @return
+ */
+static inline usb_device_request_setup_packet_t *
+usb_hub_create_disable_port_request(uint16_t port) {
+	usb_device_request_setup_packet_t *result =
+	    malloc(sizeof (usb_device_request_setup_packet_t));
+	usb_hub_set_disable_port_request(result, port);
+	return result;
+}
+
+/**
+ * set the device request to be a port disable request
+ * @param request
+ * @param port
+ */
+static inline void usb_hub_set_reset_port_request(
+    usb_device_request_setup_packet_t *request, uint16_t port
+    ) {
+	request->index = port;
+	request->request_type = USB_HUB_REQ_TYPE_SET_PORT_FEATURE;
+	request->request = USB_HUB_REQUEST_SET_FEATURE;
+	request->value = USB_HUB_FEATURE_PORT_RESET;
+	request->length = 0;
+}
+
+/**
+ * disable specified port
+ * @param port
+ * @return
+ */
+static inline usb_device_request_setup_packet_t *
+usb_hub_create_reset_port_request(uint16_t port) {
+	usb_device_request_setup_packet_t *result =
+	    malloc(sizeof (usb_device_request_setup_packet_t));
+	usb_hub_set_reset_port_request(result, port);
+	return result;
+}
+
+/**
+ * set the device request to be a port disable request
+ * @param request
+ * @param port
+ */
+static inline void usb_hub_set_power_port_request(
+    usb_device_request_setup_packet_t *request, uint16_t port
+    ) {
+	request->index = port;
+	request->request_type = USB_HUB_REQ_TYPE_SET_PORT_FEATURE;
+	request->request = USB_HUB_REQUEST_SET_FEATURE;
+	request->value = USB_HUB_FEATURE_PORT_POWER;
+	request->length = 0;
+}
+
+/**
+ * set the device request to be a port disable request
+ * @param request
+ * @param port
+ */
+static inline void usb_hub_unset_power_port_request(
+    usb_device_request_setup_packet_t *request, uint16_t port
+    ) {
+	request->index = port;
+	request->request_type = USB_HUB_REQ_TYPE_SET_PORT_FEATURE;
+	request->request = USB_HUB_REQUEST_CLEAR_FEATURE;
+	request->value = USB_HUB_FEATURE_PORT_POWER;
+	request->length = 0;
+}
+
+/**
+ * get i`th bit of port status
+ * 
+ * @param status
+ * @param idx
+ * @return
+ */
+static inline bool usb_port_is_status(usb_port_status_t status, int idx) {
+	return (status & (1 << idx)) != 0;
+}
+
+/**
+ * set i`th bit of port status
+ * 
+ * @param status
+ * @param idx
+ * @param value
+ */
+static inline void usb_port_status_set_bit(
+    usb_port_status_t * status, int idx, bool value) {
+	(*status) = value ?
+	    ((*status) | (1 << (idx))) :
+	    ((*status)&(~(1 << (idx))));
+}
+
+/**
+ * get i`th bit of hub status
+ * 
+ * @param status
+ * @param idx
+ * @return
+ */
+static inline bool usb_hub_is_status(usb_hub_status_t status, int idx) {
+	return (status & (1 << idx)) != 0;
+}
+
+/**
+ * set i`th bit of hub status
+ * 
+ * @param status
+ * @param idx
+ * @param value
+ */
+static inline void usb_hub_status_set_bit(
+    usb_hub_status_t *status, int idx, bool value) {
+	(*status) = value ?
+	    ((*status) | (1 << (idx))) :
+	    ((*status)&(~(1 << (idx))));
+}
+
+/**
+ * low speed device on the port indicator
+ * 
+ * @param status
+ * @return true if low speed device is attached
+ */
+static inline bool usb_port_low_speed(usb_port_status_t status) {
+	return usb_port_is_status(status, 9);
+}
+
+/**
+ * set low speed device connected bit in port status
+ * 
+ * @param status
+ * @param low_speed value of the bit
+ */
+static inline void usb_port_set_low_speed(usb_port_status_t *status, bool low_speed) {
+	usb_port_status_set_bit(status, 9, low_speed);
+}
+
+//high speed device attached
+
+/**
+ * high speed device on the port indicator
+ *
+ * @param status
+ * @return true if high speed device is on port
+ */
+static inline bool usb_port_high_speed(usb_port_status_t status) {
+	return usb_port_is_status(status, 10);
+}
+
+/**
+ * set high speed device bit in port status
+ *
+ * @param status
+ * @param high_speed value of the bit
+ */
+static inline void usb_port_set_high_speed(usb_port_status_t *status, bool high_speed) {
+	usb_port_status_set_bit(status, 10, high_speed);
+}
+
+/**
+ * speed getter for port status
+ *
+ * @param status
+ * @return speed of usb device (for more see usb specification)
+ */
+static inline usb_speed_t usb_port_speed(usb_port_status_t status) {
+	if (usb_port_low_speed(status))
+		return USB_SPEED_LOW;
+	if (usb_port_high_speed(status))
+		return USB_SPEED_HIGH;
+	return USB_SPEED_FULL;
+}
+
+
+
+#endif	/* HUB_PORT_STATUS_H */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/ports.c
===================================================================
--- uspace/drv/usbhub/ports.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhub/ports.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,465 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhub
+ * @{
+ */
+/** @file
+ * Hub ports functions.
+ */
+
+#include <bool.h>
+#include <errno.h>
+#include <str_error.h>
+#include <inttypes.h>
+#include <fibril_synch.h>
+
+#include <usb/debug.h>
+
+#include "ports.h"
+#include "usbhub.h"
+#include "usbhub_private.h"
+#include "port_status.h"
+
+/** Information for fibril for device discovery. */
+struct add_device_phase1 {
+	usb_hub_info_t *hub;
+	size_t port;
+	usb_speed_t speed;
+};
+
+/**
+ * count of port status changes that are not explicitly handled by
+ * any function here and must be cleared by hand
+ */
+static const unsigned int non_handled_changes_count = 2;
+
+/**
+ * port status changes that are not explicitly handled by
+ * any function here and must be cleared by hand
+ */
+static const int non_handled_changes[] = {
+	USB_HUB_FEATURE_C_PORT_ENABLE,
+	USB_HUB_FEATURE_C_PORT_SUSPEND
+};
+
+static void usb_hub_removed_device(
+    usb_hub_info_t *hub, uint16_t port);
+
+static void usb_hub_port_reset_completed(usb_hub_info_t *hub,
+    uint16_t port, uint32_t status);
+
+static void usb_hub_port_over_current(usb_hub_info_t *hub,
+    uint16_t port, uint32_t status);
+
+static int get_port_status(usb_pipe_t *ctrl_pipe, size_t port,
+    usb_port_status_t *status);
+
+static int enable_port_callback(int port_no, void *arg);
+
+static int add_device_phase1_worker_fibril(void *arg);
+
+static int create_add_device_fibril(usb_hub_info_t *hub, size_t port,
+    usb_speed_t speed);
+
+/**
+ * Process interrupts on given hub port
+ *
+ * Accepts connection, over current and port reset change.
+ * @param hub hub representation
+ * @param port port number, starting from 1
+ */
+void usb_hub_process_port_interrupt(usb_hub_info_t *hub,
+    uint16_t port) {
+	usb_log_debug("Interrupt at port %zu\n", (size_t) port);
+	//determine type of change
+	//usb_pipe_t *pipe = hub->control_pipe;
+
+	int opResult;
+
+	usb_port_status_t status;
+	opResult = get_port_status(&hub->usb_device->ctrl_pipe, port, &status);
+	if (opResult != EOK) {
+		usb_log_error("Failed to get port %zu status: %s.\n",
+		    (size_t) port, str_error(opResult));
+		return;
+	}
+	//connection change
+	if (usb_port_is_status(status, USB_HUB_FEATURE_C_PORT_CONNECTION)) {
+		bool device_connected = usb_port_is_status(status,
+		    USB_HUB_FEATURE_PORT_CONNECTION);
+		usb_log_debug("Connection change on port %zu: %s.\n",
+		    (size_t) port,
+		    device_connected ? "device attached" : "device removed");
+
+		if (device_connected) {
+			opResult = create_add_device_fibril(hub, port,
+			    usb_port_speed(status));
+			if (opResult != EOK) {
+				usb_log_error(
+				    "Cannot handle change on port %zu: %s.\n",
+				    (size_t) port, str_error(opResult));
+			}
+		} else {
+			usb_hub_removed_device(hub, port);
+		}
+	}
+	//over current
+	if (usb_port_is_status(status, USB_HUB_FEATURE_C_PORT_OVER_CURRENT)) {
+		//check if it was not auto-resolved
+		usb_log_debug("Overcurrent change on port\n");
+		usb_hub_port_over_current(hub, port, status);
+	}
+	//port reset
+	if (usb_port_is_status(status, USB_HUB_FEATURE_C_PORT_RESET)) {
+		usb_hub_port_reset_completed(hub, port, status);
+	}
+	usb_log_debug("Status x%x : %d\n ", status, status);
+
+	usb_port_status_set_bit(
+	    &status, USB_HUB_FEATURE_C_PORT_CONNECTION, false);
+	usb_port_status_set_bit(
+	    &status, USB_HUB_FEATURE_C_PORT_RESET, false);
+	usb_port_status_set_bit(
+	    &status, USB_HUB_FEATURE_C_PORT_OVER_CURRENT, false);
+
+	//clearing not yet handled changes	
+	unsigned int feature_idx;
+	for (feature_idx = 0;
+	    feature_idx < non_handled_changes_count;
+	    ++feature_idx) {
+		unsigned int bit_idx = non_handled_changes[feature_idx];
+		if (status & (1 << bit_idx)) {
+			usb_log_info(
+			    "There was not yet handled change on port %d: %d"
+			    ";clearing it\n",
+			    port, bit_idx);
+			int opResult = usb_hub_clear_port_feature(
+			    hub->control_pipe,
+			    port, bit_idx);
+			if (opResult != EOK) {
+				usb_log_warning(
+				    "Could not clear port flag %d: %s\n",
+				    bit_idx, str_error(opResult)
+				    );
+			}
+			usb_port_status_set_bit(
+			    &status, bit_idx, false);
+		}
+	}
+	if (status >> 16) {
+		usb_log_info("There is still some unhandled change %X\n",
+		    status);
+	}
+}
+
+/**
+ * routine called when a device on port has been removed
+ *
+ * If the device on port had default address, it releases default address.
+ * Otherwise does not do anything, because DDF does not allow to remove device
+ * from it`s device tree.
+ * @param hub hub representation
+ * @param port port number, starting from 1
+ */
+static void usb_hub_removed_device(
+    usb_hub_info_t *hub, uint16_t port) {
+
+	int opResult = usb_hub_clear_port_feature(hub->control_pipe,
+	    port, USB_HUB_FEATURE_C_PORT_CONNECTION);
+	if (opResult != EOK) {
+		usb_log_warning("Could not clear port-change-connection flag\n");
+	}
+	/** \TODO remove device from device manager - not yet implemented in
+	 * devide manager
+	 */
+
+	//close address
+
+	usb_hub_port_t *the_port = hub->ports + port;
+
+	fibril_mutex_lock(&hub->port_mutex);
+
+	if (the_port->attached_device.address >= 0) {
+		usb_log_warning("Device unplug on `%s' (port %zu): " \
+		    "not implemented.\n", hub->usb_device->ddf_dev->name,
+		    (size_t) port);
+		the_port->attached_device.address = -1;
+		the_port->attached_device.handle = 0;
+	} else {
+		usb_log_warning("Device removed before being registered.\n");
+
+		/*
+		 * Device was removed before port reset completed.
+		 * We will announce a failed port reset to unblock the
+		 * port reset callback from new device wrapper.
+		 */
+		fibril_mutex_lock(&the_port->reset_mutex);
+		the_port->reset_completed = true;
+		the_port->reset_okay = false;
+		fibril_condvar_broadcast(&the_port->reset_cv);
+		fibril_mutex_unlock(&the_port->reset_mutex);
+	}
+
+	fibril_mutex_unlock(&hub->port_mutex);
+}
+
+/**
+ * Process port reset change
+ *
+ * After this change port should be enabled, unless some problem occured.
+ * This functions triggers second phase of enabling new device.
+ * @param hub
+ * @param port
+ * @param status
+ */
+static void usb_hub_port_reset_completed(usb_hub_info_t *hub,
+    uint16_t port, uint32_t status) {
+	usb_log_debug("Port %zu reset complete.\n", (size_t) port);
+	if (usb_port_is_status(status, USB_HUB_FEATURE_PORT_ENABLE)) {
+		/* Finalize device adding. */
+		usb_hub_port_t *the_port = hub->ports + port;
+		fibril_mutex_lock(&the_port->reset_mutex);
+		the_port->reset_completed = true;
+		the_port->reset_okay = true;
+		fibril_condvar_broadcast(&the_port->reset_cv);
+		fibril_mutex_unlock(&the_port->reset_mutex);
+	} else {
+		usb_log_warning(
+		    "Port %zu reset complete but port not enabled.\n",
+		    (size_t) port);
+	}
+	/* Clear the port reset change. */
+	int rc = usb_hub_clear_port_feature(hub->control_pipe,
+	    port, USB_HUB_FEATURE_C_PORT_RESET);
+	if (rc != EOK) {
+		usb_log_error("Failed to clear port %d reset feature: %s.\n",
+		    port, str_error(rc));
+	}
+}
+
+/**
+ * Process over current condition on port.
+ *
+ * Turn off the power on the port.
+ *
+ * @param hub hub representation
+ * @param port port number, starting from 1
+ */
+static void usb_hub_port_over_current(usb_hub_info_t *hub,
+    uint16_t port, uint32_t status) {
+	int opResult;
+	if (usb_port_is_status(status, USB_HUB_FEATURE_PORT_OVER_CURRENT)) {
+		opResult = usb_hub_clear_port_feature(hub->control_pipe,
+		    port, USB_HUB_FEATURE_PORT_POWER);
+		if (opResult != EOK) {
+			usb_log_error("Cannot power off port %d; %s\n",
+			    port, str_error(opResult));
+		}
+	} else {
+		opResult = usb_hub_set_port_feature(hub->control_pipe,
+		    port, USB_HUB_FEATURE_PORT_POWER);
+		if (opResult != EOK) {
+			usb_log_error("Cannot power on port %d; %s\n",
+			    port, str_error(opResult));
+		}
+	}
+}
+
+/** Retrieve port status.
+ *
+ * @param[in] ctrl_pipe Control pipe to use.
+ * @param[in] port Port number (starting at 1).
+ * @param[out] status Where to store the port status.
+ * @return Error code.
+ */
+static int get_port_status(usb_pipe_t *ctrl_pipe, size_t port,
+    usb_port_status_t *status) {
+	size_t recv_size;
+	usb_device_request_setup_packet_t request;
+	usb_port_status_t status_tmp;
+
+	usb_hub_set_port_status_request(&request, port);
+	int rc = usb_pipe_control_read(ctrl_pipe,
+	    &request, sizeof (usb_device_request_setup_packet_t),
+	    &status_tmp, sizeof (status_tmp), &recv_size);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	if (recv_size != sizeof (status_tmp)) {
+		return ELIMIT;
+	}
+
+	if (status != NULL) {
+		*status = status_tmp;
+	}
+
+	return EOK;
+}
+
+/** Callback for enabling a specific port.
+ *
+ * We wait on a CV until port is reseted.
+ * That is announced via change on interrupt pipe.
+ *
+ * @param port_no Port number (starting at 1).
+ * @param arg Custom argument, points to @c usb_hub_info_t.
+ * @return Error code.
+ */
+static int enable_port_callback(int port_no, void *arg) {
+	usb_hub_info_t *hub = arg;
+	int rc;
+	usb_device_request_setup_packet_t request;
+	usb_hub_port_t *my_port = hub->ports + port_no;
+
+	usb_hub_set_reset_port_request(&request, port_no);
+	rc = usb_pipe_control_write(hub->control_pipe,
+	    &request, sizeof (request), NULL, 0);
+	if (rc != EOK) {
+		usb_log_warning("Port reset failed: %s.\n", str_error(rc));
+		return rc;
+	}
+
+	/*
+	 * Wait until reset completes.
+	 */
+	fibril_mutex_lock(&my_port->reset_mutex);
+	while (!my_port->reset_completed) {
+		fibril_condvar_wait(&my_port->reset_cv, &my_port->reset_mutex);
+	}
+	fibril_mutex_unlock(&my_port->reset_mutex);
+
+	if (my_port->reset_okay) {
+		return EOK;
+	} else {
+		return ESTALL;
+	}
+}
+
+/** Fibril for adding a new device.
+ *
+ * Separate fibril is needed because the port reset completion is announced
+ * via interrupt pipe and thus we cannot block here.
+ *
+ * @param arg Pointer to struct add_device_phase1.
+ * @return 0 Always.
+ */
+static int add_device_phase1_worker_fibril(void *arg) {
+	struct add_device_phase1 *data
+	    = (struct add_device_phase1 *) arg;
+
+	usb_address_t new_address;
+	devman_handle_t child_handle;
+
+	int rc = usb_hc_new_device_wrapper(data->hub->usb_device->ddf_dev,
+	    &data->hub->connection, data->speed,
+	    enable_port_callback, (int) data->port, data->hub,
+	    &new_address, &child_handle,
+	    NULL, NULL, NULL);
+
+	if (rc != EOK) {
+		usb_log_error("Failed registering device on port %zu: %s.\n",
+		    data->port, str_error(rc));
+		goto leave;
+	}
+
+	fibril_mutex_lock(&data->hub->port_mutex);
+	data->hub->ports[data->port].attached_device.handle = child_handle;
+	data->hub->ports[data->port].attached_device.address = new_address;
+	fibril_mutex_unlock(&data->hub->port_mutex);
+
+	usb_log_info("Detected new device on `%s' (port %zu), "
+	    "address %d (handle %" PRIun ").\n",
+	    data->hub->usb_device->ddf_dev->name, data->port,
+	    new_address, child_handle);
+
+leave:
+	free(arg);
+
+	fibril_mutex_lock(&data->hub->pending_ops_mutex);
+	assert(data->hub->pending_ops_count > 0);
+	data->hub->pending_ops_count--;
+	fibril_condvar_signal(&data->hub->pending_ops_cv);
+	fibril_mutex_unlock(&data->hub->pending_ops_mutex);
+
+
+	return EOK;
+}
+
+/** Start device adding when connection change is detected.
+ *
+ * This fires a new fibril to complete the device addition.
+ *
+ * @param hub Hub where the change occured.
+ * @param port Port index (starting at 1).
+ * @param speed Speed of the device.
+ * @return Error code.
+ */
+static int create_add_device_fibril(usb_hub_info_t *hub, size_t port,
+    usb_speed_t speed) {
+	struct add_device_phase1 *data
+	    = malloc(sizeof (struct add_device_phase1));
+	if (data == NULL) {
+		return ENOMEM;
+	}
+	data->hub = hub;
+	data->port = port;
+	data->speed = speed;
+
+	usb_hub_port_t *the_port = hub->ports + port;
+
+	fibril_mutex_lock(&the_port->reset_mutex);
+	the_port->reset_completed = false;
+	fibril_mutex_unlock(&the_port->reset_mutex);
+
+	int rc = usb_hub_clear_port_feature(hub->control_pipe, port,
+	    USB_HUB_FEATURE_C_PORT_CONNECTION);
+	if (rc != EOK) {
+		free(data);
+		usb_log_warning("Failed to clear port change flag: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+
+	fid_t fibril = fibril_create(add_device_phase1_worker_fibril, data);
+	if (fibril == 0) {
+		free(data);
+		return ENOMEM;
+	}
+	fibril_mutex_lock(&hub->pending_ops_mutex);
+	hub->pending_ops_count++;
+	fibril_mutex_unlock(&hub->pending_ops_mutex);
+	fibril_add_ready(fibril);
+
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/ports.h
===================================================================
--- uspace/drv/usbhub/ports.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhub/ports.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhub
+ * @{
+ */
+/** @file
+ * Hub ports related functions.
+ */
+#ifndef DRV_USBHUB_PORTS_H
+#define DRV_USBHUB_PORTS_H
+
+#include <usb/dev/driver.h>
+#include <usb/dev/hub.h>
+
+typedef struct usb_hub_info_t usb_hub_info_t;
+
+/** Information about single port on a hub. */
+typedef struct {
+	/** Mutex needed by CV for checking port reset. */
+	fibril_mutex_t reset_mutex;
+	/** CV for waiting to port reset completion. */
+	fibril_condvar_t reset_cv;
+	/** Whether port reset is completed.
+	 * Guarded by @c reset_mutex.
+	 */
+	bool reset_completed;
+	/** Whether to announce the port reset as successful. */
+	bool reset_okay;
+
+	/** Information about attached device. */
+	usb_hc_attached_device_t attached_device;
+} usb_hub_port_t;
+
+/** Initialize hub port information.
+ *
+ * @param port Port to be initialized.
+ */
+static inline void usb_hub_port_init(usb_hub_port_t *port) {
+	port->attached_device.address = -1;
+	port->attached_device.handle = 0;
+	fibril_mutex_initialize(&port->reset_mutex);
+	fibril_condvar_initialize(&port->reset_cv);
+}
+
+
+void usb_hub_process_port_interrupt(usb_hub_info_t *hub,
+	uint16_t port);
+
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/usbhub.c
===================================================================
--- uspace/drv/usbhub/usbhub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhub/usbhub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,522 @@
+/*
+ * Copyright (c) 2010 Matus Dekanek
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup drvusbhub
+ * @{
+ */
+/** @file
+ * @brief usb hub main functionality
+ */
+
+#include <ddf/driver.h>
+#include <bool.h>
+#include <errno.h>
+#include <str_error.h>
+#include <inttypes.h>
+
+#include <usb_iface.h>
+#include <usb/ddfiface.h>
+#include <usb/descriptor.h>
+#include <usb/dev/recognise.h>
+#include <usb/dev/request.h>
+#include <usb/classes/hub.h>
+#include <usb/dev/poll.h>
+#include <stdio.h>
+
+#include "usbhub.h"
+#include "usbhub_private.h"
+#include "port_status.h"
+#include <usb/usb.h>
+#include <usb/dev/pipes.h>
+#include <usb/classes/classes.h>
+
+
+static usb_hub_info_t * usb_hub_info_create(usb_device_t *usb_dev);
+
+static int usb_hub_process_hub_specific_info(usb_hub_info_t *hub_info);
+
+static int usb_hub_set_configuration(usb_hub_info_t *hub_info);
+
+static int usb_hub_start_hub_fibril(usb_hub_info_t *hub_info);
+
+static int usb_process_hub_over_current(usb_hub_info_t *hub_info,
+    usb_hub_status_t status);
+
+static int usb_process_hub_local_power_change(usb_hub_info_t *hub_info,
+    usb_hub_status_t status);
+
+static void usb_hub_process_global_interrupt(usb_hub_info_t *hub_info);
+
+static void usb_hub_polling_terminated_callback(usb_device_t *device,
+    bool was_error, void *data);
+
+
+//*********************************************
+//
+//  hub driver code, initialization
+//
+//*********************************************
+
+/**
+ * Initialize hub device driver fibril
+ *
+ * Creates hub representation and fibril that periodically checks hub`s status.
+ * Hub representation is passed to the fibril.
+ * @param usb_dev generic usb device information
+ * @return error code
+ */
+int usb_hub_add_device(usb_device_t *usb_dev) {
+	if (!usb_dev) return EINVAL;
+	usb_hub_info_t *hub_info = usb_hub_info_create(usb_dev);
+	//create hc connection
+	usb_log_debug("Initializing USB wire abstraction.\n");
+	int opResult = usb_hc_connection_initialize_from_device(
+	    &hub_info->connection,
+	    hub_info->usb_device->ddf_dev);
+	if (opResult != EOK) {
+		usb_log_error("Could not initialize connection to device, "
+		    " %s\n",
+		    str_error(opResult));
+		free(hub_info);
+		return opResult;
+	}
+
+	//set hub configuration
+	opResult = usb_hub_set_configuration(hub_info);
+	if (opResult != EOK) {
+		usb_log_error("Could not set hub configuration, %s\n",
+		    str_error(opResult));
+		free(hub_info);
+		return opResult;
+	}
+	//get port count and create attached_devs
+	opResult = usb_hub_process_hub_specific_info(hub_info);
+	if (opResult != EOK) {
+		usb_log_error("Could process hub specific info, %s\n",
+		    str_error(opResult));
+		free(hub_info);
+		return opResult;
+	}
+
+	usb_log_debug("Creating 'hub' function in DDF.\n");
+	ddf_fun_t *hub_fun = ddf_fun_create(hub_info->usb_device->ddf_dev,
+	    fun_exposed, "hub");
+	assert(hub_fun != NULL);
+	hub_fun->ops = NULL;
+
+	opResult = ddf_fun_bind(hub_fun);
+	assert(opResult == EOK);
+	opResult = ddf_fun_add_to_class(hub_fun, "hub");
+	assert(opResult == EOK);
+
+	opResult = usb_hub_start_hub_fibril(hub_info);
+	if (opResult != EOK)
+		free(hub_info);
+	return opResult;
+}
+
+/** Callback for polling hub for changes.
+ *
+ * @param dev Device where the change occured.
+ * @param change_bitmap Bitmap of changed ports.
+ * @param change_bitmap_size Size of the bitmap in bytes.
+ * @param arg Custom argument, points to @c usb_hub_info_t.
+ * @return Whether to continue polling.
+ */
+bool hub_port_changes_callback(usb_device_t *dev,
+    uint8_t *change_bitmap, size_t change_bitmap_size, void *arg) {
+	usb_log_debug("hub_port_changes_callback\n");
+	usb_hub_info_t *hub = (usb_hub_info_t *) arg;
+
+	/* FIXME: check that we received enough bytes. */
+	if (change_bitmap_size == 0) {
+		goto leave;
+	}
+
+	bool change;
+	change = ((uint8_t*) change_bitmap)[0] & 1;
+	if (change) {
+		usb_hub_process_global_interrupt(hub);
+	}
+
+	size_t port;
+	for (port = 1; port < hub->port_count + 1; port++) {
+		bool change = (change_bitmap[port / 8] >> (port % 8)) % 2;
+		if (change) {
+			usb_hub_process_port_interrupt(hub, port);
+		}
+	}
+leave:
+	/* FIXME: proper interval. */
+	async_usleep(1000 * 250);
+
+	return true;
+}
+
+
+//*********************************************
+//
+//  support functions
+//
+//*********************************************
+
+/**
+ * create usb_hub_info_t structure
+ *
+ * Does only basic copying of known information into new structure.
+ * @param usb_dev usb device structure
+ * @return basic usb_hub_info_t structure
+ */
+static usb_hub_info_t * usb_hub_info_create(usb_device_t *usb_dev) {
+	usb_hub_info_t * result = malloc(sizeof (usb_hub_info_t));
+	if (!result) return NULL;
+	result->usb_device = usb_dev;
+	result->status_change_pipe = usb_dev->pipes[0].pipe;
+	result->control_pipe = &usb_dev->ctrl_pipe;
+	result->is_default_address_used = false;
+
+	result->ports = NULL;
+	result->port_count = (size_t) - 1;
+	fibril_mutex_initialize(&result->port_mutex);
+
+	fibril_mutex_initialize(&result->pending_ops_mutex);
+	fibril_condvar_initialize(&result->pending_ops_cv);
+	result->pending_ops_count = 0;
+	return result;
+}
+
+/**
+ * Load hub-specific information into hub_info structure and process if needed
+ *
+ * Particularly read port count and initialize structure holding port
+ * information. If there are non-removable devices, start initializing them.
+ * This function is hub-specific and should be run only after the hub is
+ * configured using usb_hub_set_configuration function.
+ * @param hub_info hub representation
+ * @return error code
+ */
+static int usb_hub_process_hub_specific_info(usb_hub_info_t *hub_info) {
+	// get hub descriptor
+	usb_log_debug("Creating serialized descriptor\n");
+	uint8_t serialized_descriptor[USB_HUB_MAX_DESCRIPTOR_SIZE];
+	usb_hub_descriptor_t * descriptor;
+	int opResult;
+
+	size_t received_size;
+	opResult = usb_request_get_descriptor(hub_info->control_pipe,
+	    USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_DEVICE,
+	    USB_DESCTYPE_HUB, 0, 0, serialized_descriptor,
+	    USB_HUB_MAX_DESCRIPTOR_SIZE, &received_size);
+
+	if (opResult != EOK) {
+		usb_log_error("Failed when receiving hub descriptor, "
+		    "%s\n",
+		    str_error(opResult));
+		free(serialized_descriptor);
+		return opResult;
+	}
+	usb_log_debug2("Deserializing descriptor\n");
+	descriptor = usb_create_deserialized_hub_desriptor(
+	    serialized_descriptor);
+	if (descriptor == NULL) {
+		usb_log_warning("could not deserialize descriptor \n");
+		return ENOMEM;
+	}
+	usb_log_debug("setting port count to %d\n", descriptor->ports_count);
+	hub_info->port_count = descriptor->ports_count;
+	bool is_power_switched =
+	    ((descriptor->hub_characteristics & 1) == 0);
+	bool has_individual_port_powering =
+	    ((descriptor->hub_characteristics & 1) != 0);
+	hub_info->ports = malloc(
+	    sizeof (usb_hub_port_t) * (hub_info->port_count + 1));
+	if (!hub_info->ports) {
+		return ENOMEM;
+	}
+	size_t port;
+	for (port = 0; port < hub_info->port_count + 1; ++port) {
+		usb_hub_port_init(&hub_info->ports[port]);
+	}
+	if (is_power_switched) {
+		usb_log_debug("Hub power switched\n");
+
+		if (!has_individual_port_powering) {
+			//this setting actually makes no difference
+			usb_log_debug("Hub has global powering\n");
+		}
+
+		for (port = 1; port <= hub_info->port_count; ++port) {
+			usb_log_debug("Powering port %zu.\n", port);
+			opResult = usb_hub_set_port_feature(hub_info->control_pipe,
+			    port, USB_HUB_FEATURE_PORT_POWER);
+			if (opResult != EOK) {
+				usb_log_error("Cannot power on port %zu: %s.\n",
+				    port, str_error(opResult));
+			}
+		}
+
+	} else {
+		usb_log_debug("Power not switched, not going to be powered\n");
+	}
+	usb_log_debug2("Freeing data\n");
+	free(descriptor);
+	return EOK;
+}
+
+/**
+ * Set configuration of hub
+ *
+ * Check whether there is at least one configuration and sets the first one.
+ * This function should be run prior to running any hub-specific action.
+ * @param hub_info hub representation
+ * @return error code
+ */
+static int usb_hub_set_configuration(usb_hub_info_t *hub_info) {
+	//device descriptor
+	usb_standard_device_descriptor_t *std_descriptor
+	    = &hub_info->usb_device->descriptors.device;
+	usb_log_debug("Hub has %d configurations\n",
+	    std_descriptor->configuration_count);
+	if (std_descriptor->configuration_count < 1) {
+		usb_log_error("There are no configurations available\n");
+		return EINVAL;
+	}
+
+	usb_standard_configuration_descriptor_t *config_descriptor
+	    = (usb_standard_configuration_descriptor_t *)
+	    hub_info->usb_device->descriptors.configuration;
+
+	/* Set configuration. */
+	int opResult = usb_request_set_configuration(
+	    &hub_info->usb_device->ctrl_pipe,
+	    config_descriptor->configuration_number);
+
+	if (opResult != EOK) {
+		usb_log_error("Failed to set hub configuration: %s.\n",
+		    str_error(opResult));
+		return opResult;
+	}
+	usb_log_debug("\tUsed configuration %d\n",
+	    config_descriptor->configuration_number);
+
+	return EOK;
+}
+
+/**
+ * create and start fibril with hub control loop
+ *
+ * Before the fibril is started, the control pipe and host controller
+ * connection of the hub is open.
+ *
+ * @param hub_info hub representing structure
+ * @return error code
+ */
+static int usb_hub_start_hub_fibril(usb_hub_info_t *hub_info) {
+	int rc;
+
+	rc = usb_device_auto_poll(hub_info->usb_device, 0,
+	    hub_port_changes_callback, ((hub_info->port_count + 1) / 8) + 1,
+	    usb_hub_polling_terminated_callback, hub_info);
+	if (rc != EOK) {
+		usb_log_error("Failed to create polling fibril: %s.\n",
+		    str_error(rc));
+		free(hub_info);
+		return rc;
+	}
+
+	usb_log_info("Controlling hub `%s' (%zu ports).\n",
+	    hub_info->usb_device->ddf_dev->name, hub_info->port_count);
+	return EOK;
+}
+
+//*********************************************
+//
+//  change handling functions
+//
+//*********************************************
+
+/**
+ * process hub over current change
+ *
+ * This means either to power off the hub or power it on.
+ * @param hub_info hub instance
+ * @param status hub status bitmask
+ * @return error code
+ */
+static int usb_process_hub_over_current(usb_hub_info_t *hub_info,
+    usb_hub_status_t status) {
+	int opResult;
+	if (usb_hub_is_status(status, USB_HUB_FEATURE_HUB_OVER_CURRENT)) {
+		//poweroff all ports
+		unsigned int port;
+		for (port = 1; port <= hub_info->port_count; ++port) {
+			opResult = usb_hub_clear_port_feature(
+			    hub_info->control_pipe, port,
+			    USB_HUB_FEATURE_PORT_POWER);
+			if (opResult != EOK) {
+				usb_log_warning(
+				    "Cannot power off port %d;  %s\n",
+				    port, str_error(opResult));
+			}
+		}
+	} else {
+		//power all ports
+		unsigned int port;
+		for (port = 1; port <= hub_info->port_count; ++port) {
+			opResult = usb_hub_set_port_feature(
+			    hub_info->control_pipe, port,
+			    USB_HUB_FEATURE_PORT_POWER);
+			if (opResult != EOK) {
+				usb_log_warning(
+				    "Cannot power off port %d;  %s\n",
+				    port, str_error(opResult));
+			}
+		}
+	}
+	return opResult;
+}
+
+/**
+ * process hub local power change
+ *
+ * This change is ignored.
+ * @param hub_info hub instance
+ * @param status hub status bitmask
+ * @return error code
+ */
+static int usb_process_hub_local_power_change(usb_hub_info_t *hub_info,
+    usb_hub_status_t status) {
+	int opResult = EOK;
+	opResult = usb_hub_clear_feature(hub_info->control_pipe,
+	    USB_HUB_FEATURE_C_HUB_LOCAL_POWER);
+	if (opResult != EOK) {
+		usb_log_error("Cannnot clear hub power change flag: "
+		    "%s\n",
+		    str_error(opResult));
+	}
+	return opResult;
+}
+
+/**
+ * process hub interrupts
+ *
+ * The change can be either in the over-current condition or
+ * local-power change.
+ * @param hub_info hub instance
+ */
+static void usb_hub_process_global_interrupt(usb_hub_info_t *hub_info) {
+	usb_log_debug("Global interrupt on a hub\n");
+	usb_pipe_t *pipe = hub_info->control_pipe;
+	int opResult;
+
+	usb_port_status_t status;
+	size_t rcvd_size;
+	usb_device_request_setup_packet_t request;
+	//int opResult;
+	usb_hub_set_hub_status_request(&request);
+	//endpoint 0
+
+	opResult = usb_pipe_control_read(
+	    pipe,
+	    &request, sizeof (usb_device_request_setup_packet_t),
+	    &status, 4, &rcvd_size
+	    );
+	if (opResult != EOK) {
+		usb_log_error("Could not get hub status: %s\n",
+		    str_error(opResult));
+		return;
+	}
+	if (rcvd_size != sizeof (usb_port_status_t)) {
+		usb_log_error("Received status has incorrect size\n");
+		return;
+	}
+	//port reset
+	if (
+	    usb_hub_is_status(status, 16 + USB_HUB_FEATURE_C_HUB_OVER_CURRENT)) {
+		usb_process_hub_over_current(hub_info, status);
+	}
+	if (
+	    usb_hub_is_status(status, 16 + USB_HUB_FEATURE_C_HUB_LOCAL_POWER)) {
+		usb_process_hub_local_power_change(hub_info, status);
+	}
+}
+
+/**
+ * callback called from hub polling fibril when the fibril terminates
+ *
+ * Should perform a cleanup - deletes hub_info.
+ * @param device usb device afected
+ * @param was_error indicates that the fibril is stoped due to an error
+ * @param data pointer to usb_hub_info_t structure
+ */
+static void usb_hub_polling_terminated_callback(usb_device_t *device,
+    bool was_error, void *data) {
+	usb_hub_info_t * hub = data;
+	assert(hub);
+
+	fibril_mutex_lock(&hub->pending_ops_mutex);
+
+	/* The device is dead. However there might be some pending operations
+	 * that we need to wait for.
+	 * One of them is device adding in progress.
+	 * The respective fibril is probably waiting for status change
+	 * in port reset (port enable) callback.
+	 * Such change would never come (otherwise we would not be here).
+	 * Thus, we would flush all pending port resets.
+	 */
+	if (hub->pending_ops_count > 0) {
+		fibril_mutex_lock(&hub->port_mutex);
+		size_t port;
+		for (port = 0; port < hub->port_count; port++) {
+			usb_hub_port_t *the_port = hub->ports + port;
+			fibril_mutex_lock(&the_port->reset_mutex);
+			the_port->reset_completed = true;
+			the_port->reset_okay = false;
+			fibril_condvar_broadcast(&the_port->reset_cv);
+			fibril_mutex_unlock(&the_port->reset_mutex);
+		}
+		fibril_mutex_unlock(&hub->port_mutex);
+	}
+	/* And now wait for them. */
+	while (hub->pending_ops_count > 0) {
+		fibril_condvar_wait(&hub->pending_ops_cv,
+		    &hub->pending_ops_mutex);
+	}
+	fibril_mutex_unlock(&hub->pending_ops_mutex);
+
+	usb_device_destroy(hub->usb_device);
+
+	free(hub->ports);
+	free(hub);
+}
+
+
+
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/usbhub.h
===================================================================
--- uspace/drv/usbhub/usbhub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhub/usbhub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhub
+ * @{
+ */
+/** @file
+ * @brief Hub driver.
+ */
+#ifndef DRV_USBHUB_USBHUB_H
+#define DRV_USBHUB_USBHUB_H
+
+#include <ipc/devman.h>
+#include <ddf/driver.h>
+
+#include <usb/dev/hub.h>
+#include <usb/classes/hub.h>
+
+#include <usb/dev/pipes.h>
+#include <usb/dev/driver.h>
+
+#include <fibril_synch.h>
+
+#define NAME "usbhub"
+
+#include "ports.h"
+
+/** Information about attached hub. */
+struct usb_hub_info_t {
+	/** Number of ports. */
+	size_t port_count;
+
+	/** attached device handles, for each port one */
+	usb_hub_port_t *ports;
+
+	fibril_mutex_t port_mutex;
+
+	/** connection to hcd */
+	usb_hc_connection_t connection;
+
+	/** default address is used indicator
+	 *
+	 * If default address is requested by this device, it cannot
+	 * be requested by the same hub again, otherwise a deadlock will occur.
+	 */
+	bool is_default_address_used;
+
+	/** convenience pointer to status change pipe
+	 *
+	 * Status change pipe is initialized in usb_device structure. This is
+	 * pointer into this structure, so that it does not have to be
+	 * searched again and again for the 'right pipe'.
+	 */
+	usb_pipe_t * status_change_pipe;
+
+	/** convenience pointer to control pipe
+	 *
+	 * Control pipe is initialized in usb_device structure. This is
+	 * pointer into this structure, so that it does not have to be
+	 * searched again and again for the 'right pipe'.
+	 */
+	usb_pipe_t * control_pipe;
+
+	/** generic usb device data*/
+	usb_device_t * usb_device;
+
+	/** Number of pending operations on the mutex to prevent shooting
+	 * ourselves in the foot.
+	 * When the hub is disconnected but we are in the middle of some
+	 * operation, we cannot destroy this structure right away because
+	 * the pending operation might use it.
+	 */
+	size_t pending_ops_count;
+	/** Guard for pending_ops_count. */
+	fibril_mutex_t pending_ops_mutex;
+	/** Condition variable for pending_ops_count. */
+	fibril_condvar_t pending_ops_cv;
+
+};
+
+int usb_hub_add_device(usb_device_t *usb_dev);
+
+bool hub_port_changes_callback(usb_device_t *dev,
+    uint8_t *change_bitmap, size_t change_bitmap_size, void *arg);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/usbhub.ma
===================================================================
--- uspace/drv/usbhub/usbhub.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhub/usbhub.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,2 @@
+10 usb&hub
+10 usb&class=hub
Index: uspace/drv/usbhub/usbhub_private.h
===================================================================
--- uspace/drv/usbhub/usbhub_private.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhub/usbhub_private.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 2010 Matus Dekanek
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhub
+ * @{
+ */
+/** @file
+ * @brief Hub driver private definitions
+ */
+
+#ifndef USBHUB_PRIVATE_H
+#define	USBHUB_PRIVATE_H
+
+#include "usbhub.h"
+
+#include <adt/list.h>
+#include <bool.h>
+#include <ddf/driver.h>
+#include <fibril_synch.h>
+
+#include <usb/classes/hub.h>
+#include <usb/usb.h>
+#include <usb/debug.h>
+#include <usb/dev/request.h>
+
+//************
+//
+// convenience define for malloc
+//
+//************
+
+
+usb_hub_info_t * usb_create_hub_info(ddf_dev_t * device);
+
+/**
+ * Set the device request to be a get hub descriptor request.
+ * @warning the size is allways set to USB_HUB_MAX_DESCRIPTOR_SIZE
+ * @param request
+ * @param addr
+ */
+static inline void usb_hub_set_descriptor_request(
+    usb_device_request_setup_packet_t * request
+    ) {
+	request->index = 0;
+	request->request_type = USB_HUB_REQ_TYPE_GET_DESCRIPTOR;
+	request->request = USB_HUB_REQUEST_GET_DESCRIPTOR;
+	request->value_high = USB_DESCTYPE_HUB;
+	request->value_low = 0;
+	request->length = USB_HUB_MAX_DESCRIPTOR_SIZE;
+}
+
+/**
+ * Clear feature on hub port.
+ *
+ * @param hc Host controller telephone
+ * @param address Hub address
+ * @param port_index Port
+ * @param feature Feature selector
+ * @return Operation result
+ */
+static inline int usb_hub_clear_port_feature(usb_pipe_t *pipe,
+    int port_index,
+    usb_hub_class_feature_t feature) {
+
+	usb_device_request_setup_packet_t clear_request = {
+		.request_type = USB_HUB_REQ_TYPE_CLEAR_PORT_FEATURE,
+		.request = USB_DEVREQ_CLEAR_FEATURE,
+		.length = 0,
+		.index = port_index
+	};
+	clear_request.value = feature;
+	return usb_pipe_control_write(pipe, &clear_request,
+	    sizeof (clear_request), NULL, 0);
+}
+
+/**
+ * Clear feature on hub port.
+ *
+ * @param hc Host controller telephone
+ * @param address Hub address
+ * @param port_index Port
+ * @param feature Feature selector
+ * @return Operation result
+ */
+static inline int usb_hub_set_port_feature(usb_pipe_t *pipe,
+    int port_index,
+    usb_hub_class_feature_t feature) {
+
+	usb_device_request_setup_packet_t clear_request = {
+		.request_type = USB_HUB_REQ_TYPE_SET_PORT_FEATURE,
+		.request = USB_DEVREQ_SET_FEATURE,
+		.length = 0,
+		.index = port_index
+	};
+	clear_request.value = feature;
+	return usb_pipe_control_write(pipe, &clear_request,
+	    sizeof (clear_request), NULL, 0);
+}
+
+/**
+ * Clear feature on hub port.
+ *
+ * @param pipe pipe to hub control endpoint
+ * @param feature Feature selector
+ * @return Operation result
+ */
+static inline int usb_hub_clear_feature(usb_pipe_t *pipe,
+    usb_hub_class_feature_t feature) {
+
+	usb_device_request_setup_packet_t clear_request = {
+		.request_type = USB_HUB_REQ_TYPE_CLEAR_HUB_FEATURE,
+		.request = USB_DEVREQ_CLEAR_FEATURE,
+		.length = 0,
+		.index = 0
+	};
+	clear_request.value = feature;
+	return usb_pipe_control_write(pipe, &clear_request,
+	    sizeof (clear_request), NULL, 0);
+}
+
+/**
+ * Clear feature on hub port.
+ *
+ * @param pipe pipe to hub control endpoint
+ * @param feature Feature selector
+ * @return Operation result
+ */
+static inline int usb_hub_set_feature(usb_pipe_t *pipe,
+    usb_hub_class_feature_t feature) {
+
+	usb_device_request_setup_packet_t clear_request = {
+		.request_type = USB_HUB_REQ_TYPE_CLEAR_HUB_FEATURE,
+		.request = USB_DEVREQ_SET_FEATURE,
+		.length = 0,
+		.index = 0
+	};
+	clear_request.value = feature;
+	return usb_pipe_control_write(pipe, &clear_request,
+	    sizeof (clear_request), NULL, 0);
+}
+
+
+void * usb_create_serialized_hub_descriptor(usb_hub_descriptor_t * descriptor);
+
+void usb_serialize_hub_descriptor(usb_hub_descriptor_t * descriptor,
+    void * serialized_descriptor);
+
+usb_hub_descriptor_t * usb_create_deserialized_hub_desriptor(
+    void * serialized_descriptor);
+
+void usb_deserialize_hub_desriptor(void * serialized_descriptor,
+    usb_hub_descriptor_t * descriptor);
+
+
+#endif	/* USBHUB_PRIVATE_H */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/utils.c
===================================================================
--- uspace/drv/usbhub/utils.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbhub/utils.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2010 Matus Dekanek
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhub
+ * @{
+ */
+/** @file
+ * @brief various utilities
+ */
+#include <ddf/driver.h>
+#include <bool.h>
+#include <errno.h>
+
+#include <usbhc_iface.h>
+#include <usb/descriptor.h>
+#include <usb/classes/hub.h>
+
+#include "usbhub.h"
+#include "usbhub_private.h"
+#include "port_status.h"
+
+
+size_t USB_HUB_MAX_DESCRIPTOR_SIZE = 71;
+
+//*********************************************
+//
+//  various utils
+//
+//*********************************************
+
+//hub descriptor utils
+
+/**
+ * create uint8_t array with serialized descriptor
+ *
+ * @param descriptor
+ * @return newly created serializd descriptor pointer
+ */
+void * usb_create_serialized_hub_descriptor(usb_hub_descriptor_t *descriptor) {
+	//base size
+	size_t size = 7;
+	//variable size according to port count
+	size_t var_size = (descriptor->ports_count + 7) / 8;
+	size += 2 * var_size;
+	uint8_t * result = malloc(size);
+	//size
+	if (result)
+		usb_serialize_hub_descriptor(descriptor, result);
+	return result;
+}
+
+/**
+ * serialize descriptor into given buffer
+ *
+ * The buffer size is not checked.
+ * @param descriptor
+ * @param serialized_descriptor
+ */
+void usb_serialize_hub_descriptor(usb_hub_descriptor_t *descriptor,
+    void * serialized_descriptor) {
+	//base size
+	uint8_t * sdescriptor = serialized_descriptor;
+	size_t size = 7;
+	//variable size according to port count
+	size_t var_size = (descriptor->ports_count + 7) / 8;
+	size += 2 * var_size;
+	//size
+	sdescriptor[0] = size;
+	//descriptor type
+	sdescriptor[1] = USB_DESCTYPE_HUB;
+	sdescriptor[2] = descriptor->ports_count;
+	/// @fixme handling of endianness??
+	sdescriptor[3] = descriptor->hub_characteristics / 256;
+	sdescriptor[4] = descriptor->hub_characteristics % 256;
+	sdescriptor[5] = descriptor->pwr_on_2_good_time;
+	sdescriptor[6] = descriptor->current_requirement;
+
+	size_t i;
+	for (i = 0; i < var_size; ++i) {
+		sdescriptor[7 + i] = descriptor->devices_removable[i];
+	}
+	for (i = 0; i < var_size; ++i) {
+		sdescriptor[7 + var_size + i] = 255;
+	}
+}
+
+/**
+ * create deserialized desriptor structure out of serialized descriptor
+ *
+ * The serialized descriptor must be proper usb hub descriptor,
+ * otherwise an eerror might occur.
+ *
+ * @param sdescriptor serialized descriptor
+ * @return newly created deserialized descriptor pointer
+ */
+usb_hub_descriptor_t * usb_create_deserialized_hub_desriptor(
+    void *serialized_descriptor) {
+	uint8_t * sdescriptor = serialized_descriptor;
+
+	if (sdescriptor[1] != USB_DESCTYPE_HUB) {
+		usb_log_warning("trying to deserialize wrong descriptor %x\n",
+		    sdescriptor[1]);
+		return NULL;
+	}
+
+	usb_hub_descriptor_t * result = malloc(sizeof (usb_hub_descriptor_t));
+	if (result)
+		usb_deserialize_hub_desriptor(serialized_descriptor, result);
+	return result;
+}
+
+/**
+ * deserialize descriptor into given pointer
+ * 
+ * @param serialized_descriptor
+ * @param descriptor
+ * @return
+ */
+void usb_deserialize_hub_desriptor(
+    void * serialized_descriptor, usb_hub_descriptor_t *descriptor) {
+	uint8_t * sdescriptor = serialized_descriptor;
+	descriptor->ports_count = sdescriptor[2];
+	/// @fixme handling of endianness??
+	descriptor->hub_characteristics = sdescriptor[4] + 256 * sdescriptor[3];
+	descriptor->pwr_on_2_good_time = sdescriptor[5];
+	descriptor->current_requirement = sdescriptor[6];
+	size_t var_size = (descriptor->ports_count + 7) / 8;
+	//descriptor->devices_removable = (uint8_t*) malloc(var_size);
+
+	size_t i;
+	for (i = 0; i < var_size; ++i) {
+		descriptor->devices_removable[i] = sdescriptor[7 + i];
+	}
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmast/Makefile
===================================================================
--- uspace/drv/usbmast/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmast/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,47 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+
+LIBS = \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+BINARY = usbmast
+
+SOURCES = \
+	inquiry.c \
+	main.c \
+	mast.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/usbmast/cmds.h
===================================================================
--- uspace/drv/usbmast/cmds.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmast/cmds.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmast
+ * @{
+ */
+/** @file
+ * USB mass storage commands.
+ */
+
+#ifndef USB_USBMAST_CMDS_H_
+#define USB_USBMAST_CMDS_H_
+
+#include <sys/types.h>
+#include <usb/usb.h>
+
+typedef struct {
+	uint32_t dCBWSignature;
+	uint32_t dCBWTag;
+	uint32_t dCBWDataTransferLength;
+	uint8_t bmCBWFlags;
+	uint8_t bCBWLUN;
+	uint8_t bCBWBLength;
+	uint8_t CBWCB[16];
+} __attribute__((packed)) usb_massstor_cbw_t;
+
+typedef struct {
+	uint32_t dCSWSignature;
+	uint32_t dCSWTag;
+	uint32_t dCSWDataResidue;
+	uint8_t dCSWStatus;
+} __attribute__((packed)) usb_massstor_csw_t;
+
+static inline void usb_massstor_cbw_prepare(usb_massstor_cbw_t *cbw,
+    uint32_t tag, uint32_t transfer_length, usb_direction_t dir,
+    uint8_t lun, uint8_t cmd_len, uint8_t *cmd)
+{
+	cbw->dCBWSignature = uint32_host2usb(0x43425355);
+	cbw->dCBWTag = tag;
+	cbw->dCBWDataTransferLength = transfer_length;
+
+	cbw->bmCBWFlags = 0;
+	if (dir == USB_DIRECTION_IN) {
+		cbw->bmCBWFlags |= (1 << 7);
+	}
+
+	/* Only lowest 4 bits. */
+	cbw->bCBWLUN = lun & 0x0F;
+
+	/* Only lowest 5 bits. */
+	cbw->bCBWBLength = cmd_len & 0x1F;
+
+	memcpy(cbw->CBWCB, cmd, cbw->bCBWBLength);
+}
+
+#endif
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmast/inquiry.c
===================================================================
--- uspace/drv/usbmast/inquiry.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmast/inquiry.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,193 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmast
+ * @{
+ */
+/**
+ * @file
+ * Main routines of USB mass storage driver.
+ */
+#include <usb/dev/driver.h>
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+#include <usb/classes/massstor.h>
+#include <errno.h>
+#include <str_error.h>
+#include <str.h>
+#include <ctype.h>
+#include "cmds.h"
+#include "scsi.h"
+#include "mast.h"
+
+#define BITS_GET_MASK(type, bitcount) (((type)(1 << (bitcount)))-1)
+#define BITS_GET_MID_MASK(type, bitcount, offset) \
+	((type)( BITS_GET_MASK(type, (bitcount) + (offset)) - BITS_GET_MASK(type, bitcount) ))
+#define BITS_GET(type, number, bitcount, offset) \
+	((type)( (number) & (BITS_GET_MID_MASK(type, bitcount, offset)) ) >> (offset))
+
+#define INQUIRY_RESPONSE_LENGTH 36
+
+#define STR_UNKNOWN "<unknown>"
+
+/** String constants for SCSI peripheral device types. */
+static const char *str_peripheral_device_types[] = {
+	"direct-access device",
+	"sequential-access device",
+	"printer device",
+	"processor device",
+	"write-once device",
+	"CDROM device",
+	"scanner device",
+	"optical memory device",
+	"medium changer",
+	"communications device",
+	"graphic arts pre-press device",
+	"graphic arts pre-press device",
+	"storage array controller device",
+	"enclosure services device",
+	"simplified direct-access device",
+	"optical card reader/writer device",
+	"bridging expander",
+	"object-based storage device",
+	"automation driver interface",
+	STR_UNKNOWN, // 0x13
+	STR_UNKNOWN, // 0x14
+	STR_UNKNOWN, // 0x15
+	STR_UNKNOWN, // 0x16
+	STR_UNKNOWN, // 0x17
+	STR_UNKNOWN, // 0x18
+	STR_UNKNOWN, // 0x19
+	STR_UNKNOWN, // 0x1A
+	STR_UNKNOWN, // 0x1B
+	STR_UNKNOWN, // 0x1C
+	STR_UNKNOWN, // 0x1D
+	"well-known logical unit",
+	"uknown or no device state"
+};
+#define str_peripheral_device_types_count \
+	(sizeof(str_peripheral_device_types)/sizeof(str_peripheral_device_types[0]))
+
+/** Get string representation for SCSI peripheral device type.
+ *
+ * See for example here for a list
+ * http://en.wikipedia.org/wiki/SCSI_Peripheral_Device_Type.
+ *
+ * @param type SCSI peripheral device type code.
+ * @return String representation.
+ */
+const char *usb_str_masstor_scsi_peripheral_device_type(int type)
+{
+	if ((type < 0)
+	    || ((size_t)type >= str_peripheral_device_types_count)) {
+		return STR_UNKNOWN;
+	}
+	return str_peripheral_device_types[type];
+}
+
+/** Trim trailing spaces from a string (rewrite with string terminator).
+ *
+ * @param name String to be trimmed (in-out parameter).
+ */
+static void trim_trailing_spaces(char *name)
+{
+	size_t len = str_length(name);
+	while ((len > 0) && isspace((int) name[len - 1])) {
+		name[len - 1] = 0;
+		len--;
+	}
+}
+
+/** Perform SCSI INQUIRY command on USB mass storage device.
+ *
+ * @param dev USB device.
+ * @param bulk_in_idx Index (in dev->pipes) of bulk in pipe.
+ * @param bulk_out_idx Index of bulk out pipe.
+ * @param inquiry_result Where to store parsed inquiry result.
+ * @return Error code.
+ */
+int usb_massstor_inquiry(usb_device_t *dev,
+    size_t bulk_in_idx, size_t bulk_out_idx,
+    usb_massstor_inquiry_result_t *inquiry_result)
+{
+	scsi_cmd_inquiry_t inquiry = {
+		.op_code = 0x12,
+		.lun_evpd = 0,
+		.page_code = 0,
+		.alloc_length = host2uint16_t_be(INQUIRY_RESPONSE_LENGTH),
+		.ctrl = 0
+	};
+	size_t response_len;
+	uint8_t response[INQUIRY_RESPONSE_LENGTH];
+
+	int rc;
+
+	rc = usb_massstor_data_in(dev, bulk_in_idx, bulk_out_idx,
+	    0xDEADBEEF, 0, (uint8_t *) &inquiry, sizeof(inquiry),
+	    response, INQUIRY_RESPONSE_LENGTH, &response_len);
+
+	if (rc != EOK) {
+		usb_log_error("Failed to probe device %s using %s: %s.\n",
+		   dev->ddf_dev->name, "SCSI:INQUIRY", str_error(rc));
+		return rc;
+	}
+
+	if (response_len < 8) {
+		usb_log_error("The SCSI response is too short.\n");
+		return ERANGE;
+	}
+
+	/*
+	 * This is an ugly part of the code. We will parse the returned
+	 * data by hand and try to get as many useful data as possible.
+	 */
+	bzero(inquiry_result, sizeof(*inquiry_result));
+
+	/* This shall be returned by all devices. */
+	inquiry_result->peripheral_device_type
+	    = BITS_GET(uint8_t, response[0], 5, 0);
+	inquiry_result->removable = BITS_GET(uint8_t, response[1], 1, 7);
+
+	if (response_len < 32) {
+		return EOK;
+	}
+
+	str_ncpy(inquiry_result->vendor_id, 9,
+	    (const char *) &response[8], 8);
+	trim_trailing_spaces(inquiry_result->vendor_id);
+
+	str_ncpy(inquiry_result->product_and_revision, 12,
+	    (const char *) &response[16], 11);
+	trim_trailing_spaces(inquiry_result->product_and_revision);
+
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmast/main.c
===================================================================
--- uspace/drv/usbmast/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmast/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmast
+ * @{
+ */
+/**
+ * @file
+ * Main routines of USB mass storage driver.
+ */
+#include <usb/dev/driver.h>
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+#include <usb/classes/massstor.h>
+#include <errno.h>
+#include <str_error.h>
+#include "cmds.h"
+#include "scsi.h"
+#include "mast.h"
+
+#define NAME "usbmast"
+
+#define BULK_IN_EP 0
+#define BULK_OUT_EP 1
+
+#define GET_BULK_IN(dev) ((dev)->pipes[BULK_IN_EP].pipe)
+#define GET_BULK_OUT(dev) ((dev)->pipes[BULK_OUT_EP].pipe)
+
+static usb_endpoint_description_t bulk_in_ep = {
+	.transfer_type = USB_TRANSFER_BULK,
+	.direction = USB_DIRECTION_IN,
+	.interface_class = USB_CLASS_MASS_STORAGE,
+	.interface_subclass = USB_MASSSTOR_SUBCLASS_SCSI,
+	.interface_protocol = USB_MASSSTOR_PROTOCOL_BBB,
+	.flags = 0
+};
+static usb_endpoint_description_t bulk_out_ep = {
+	.transfer_type = USB_TRANSFER_BULK,
+	.direction = USB_DIRECTION_OUT,
+	.interface_class = USB_CLASS_MASS_STORAGE,
+	.interface_subclass = USB_MASSSTOR_SUBCLASS_SCSI,
+	.interface_protocol = USB_MASSSTOR_PROTOCOL_BBB,
+	.flags = 0
+};
+
+usb_endpoint_description_t *mast_endpoints[] = {
+	&bulk_in_ep,
+	&bulk_out_ep,
+	NULL
+};
+
+/** Callback when new device is attached and recognized as a mass storage.
+ *
+ * @param dev Representation of a the USB device.
+ * @return Error code.
+ */
+static int usbmast_add_device(usb_device_t *dev)
+{
+	int rc;
+	const char *fun_name = "ctl";
+
+	ddf_fun_t *ctl_fun = ddf_fun_create(dev->ddf_dev, fun_exposed,
+	    fun_name);
+	if (ctl_fun == NULL) {
+		usb_log_error("Failed to create control function.\n");
+		return ENOMEM;
+	}
+	rc = ddf_fun_bind(ctl_fun);
+	if (rc != EOK) {
+		usb_log_error("Failed to bind control function: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+
+	usb_log_info("Pretending to control mass storage `%s'.\n",
+	    dev->ddf_dev->name);
+	usb_log_debug(" Bulk in endpoint: %d [%zuB].\n",
+	    dev->pipes[BULK_IN_EP].pipe->endpoint_no,
+	    (size_t) dev->pipes[BULK_IN_EP].descriptor->max_packet_size);
+	usb_log_debug("Bulk out endpoint: %d [%zuB].\n",
+	    dev->pipes[BULK_OUT_EP].pipe->endpoint_no,
+	    (size_t) dev->pipes[BULK_OUT_EP].descriptor->max_packet_size);
+
+	size_t lun_count = usb_masstor_get_lun_count(dev);
+
+	usb_massstor_inquiry_result_t inquiry;
+	rc = usb_massstor_inquiry(dev, BULK_IN_EP, BULK_OUT_EP, &inquiry);
+	if (rc != EOK) {
+		usb_log_warning("Failed to inquiry device `%s': %s.\n",
+		    dev->ddf_dev->name, str_error(rc));
+		return EOK;
+	}
+
+	usb_log_info("Mass storage `%s': " \
+	    "`%s' by `%s' is %s (%s), %zu LUN(s).\n",
+	    dev->ddf_dev->name,
+	    inquiry.product_and_revision, inquiry.vendor_id,
+	    usb_str_masstor_scsi_peripheral_device_type(inquiry.peripheral_device_type),
+	    inquiry.removable ? "removable" : "non-removable",
+	    lun_count);
+
+	return EOK;
+}
+
+/** USB mass storage driver ops. */
+static usb_driver_ops_t usbmast_driver_ops = {
+	.add_device = usbmast_add_device,
+};
+
+/** USB mass storage driver. */
+static usb_driver_t usbmast_driver = {
+	.name = NAME,
+	.ops = &usbmast_driver_ops,
+	.endpoints = mast_endpoints
+};
+
+int main(int argc, char *argv[])
+{
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+
+	return usb_driver_main(&usbmast_driver);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmast/mast.c
===================================================================
--- uspace/drv/usbmast/mast.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmast/mast.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,222 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmast
+ * @{
+ */
+/**
+ * @file
+ * Generic functions for USB mass storage (implementation).
+ */
+#include "mast.h"
+#include "cmds.h"
+#include <bool.h>
+#include <errno.h>
+#include <str_error.h>
+#include <usb/debug.h>
+#include <usb/dev/request.h>
+
+bool usb_mast_verbose = true;
+
+#define MASTLOG(format, ...) \
+	do { \
+		if (usb_mast_verbose) { \
+			usb_log_debug("USB cl08: " format, ##__VA_ARGS__); \
+		} \
+	} while (false)
+
+/** Request data from mass storage device.
+ *
+ * @param bulk_in_pipe Bulk in pipe to the device.
+ * @param bulk_out_pipe Bulk out pipe to the device.
+ * @param tag Command block wrapper tag (automatically compared with answer).
+ * @param lun LUN index.
+ * @param cmd SCSI command buffer (in SCSI endianness).
+ * @param cmd_size Length of SCSI command @p cmd in bytes.
+ * @param in_buffer Buffer where to store the answer (CSW is not returned).
+ * @param in_buffer_size Size of the buffer (size of the request to the device).
+ * @param received_size Number of actually received bytes.
+ * @return Error code.
+ */
+int usb_massstor_data_in(usb_device_t *dev,
+    size_t bulk_in_pipe_index, size_t bulk_out_pipe_index,
+    uint32_t tag, uint8_t lun, void *cmd, size_t cmd_size,
+    void *in_buffer, size_t in_buffer_size, size_t *received_size)
+{
+	int rc;
+	size_t act_size;
+	usb_pipe_t *bulk_in_pipe = dev->pipes[bulk_in_pipe_index].pipe;
+	usb_pipe_t *bulk_out_pipe = dev->pipes[bulk_out_pipe_index].pipe;
+
+	/* Prepare CBW - command block wrapper */
+	usb_massstor_cbw_t cbw;
+	usb_massstor_cbw_prepare(&cbw, tag, in_buffer_size,
+	    USB_DIRECTION_IN, lun, cmd_size, cmd);
+
+	/* First, send the CBW. */
+	rc = usb_pipe_write(bulk_out_pipe, &cbw, sizeof(cbw));
+	MASTLOG("CBW '%s' sent: %s.\n",
+	    usb_debug_str_buffer((uint8_t *) &cbw, sizeof(cbw), 0),
+	    str_error(rc));
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Try to retrieve the data from the device. */
+	act_size = 0;
+	rc = usb_pipe_read(bulk_in_pipe, in_buffer, in_buffer_size, &act_size);
+	MASTLOG("Received %zuB (%s): %s.\n", act_size,
+	    usb_debug_str_buffer((uint8_t *) in_buffer, act_size, 0),
+	    str_error(rc));
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Read CSW. */
+	usb_massstor_csw_t csw;
+	size_t csw_size;
+	rc = usb_pipe_read(bulk_in_pipe, &csw, sizeof(csw), &csw_size);
+	MASTLOG("CSW '%s' received (%zuB): %s.\n",
+	    usb_debug_str_buffer((uint8_t *) &csw, csw_size, 0), csw_size,
+	    str_error(rc));
+	if (rc != EOK) {
+		return rc;
+	}
+	if (csw_size != sizeof(csw)) {
+		return ERANGE;
+	}
+
+	if (csw.dCSWTag != tag) {
+		return EBADCHECKSUM;
+	}
+
+	/*
+	 * Determine the actual return value from the CSW.
+	 */
+	if (csw.dCSWStatus != 0) {
+		// FIXME: better error code
+		// FIXME: distinguish 0x01 and 0x02
+		return EXDEV;
+	}
+
+	size_t residue = (size_t) uint32_usb2host(csw.dCSWDataResidue);
+	if (residue > in_buffer_size) {
+		return ERANGE;
+	}
+	if (act_size != in_buffer_size - residue) {
+		return ERANGE;
+	}
+	if (received_size != NULL) {
+		*received_size = in_buffer_size - residue;
+	}
+
+	return EOK;
+}
+
+/** Perform bulk-only mass storage reset.
+ *
+ * @param dev Device to be reseted.
+ * @return Error code.
+ */
+int usb_massstor_reset(usb_device_t *dev)
+{
+	return usb_control_request_set(&dev->ctrl_pipe,
+	    USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE,
+	    0xFF, 0, dev->interface_no, NULL, 0);
+}
+
+/** Perform complete reset recovery of bulk-only mass storage.
+ *
+ * Notice that no error is reported because if this fails, the error
+ * would reappear on next transaction somehow.
+ *
+ * @param dev Device to be reseted.
+ * @param bulk_in_idx Index of bulk in pipe.
+ * @param bulk_out_idx Index of bulk out pipe.
+ */
+void usb_massstor_reset_recovery(usb_device_t *dev,
+    size_t bulk_in_idx, size_t bulk_out_idx)
+{
+	/* We would ignore errors here because if this fails
+	 * we are doomed anyway and any following transaction would fail.
+	 */
+	usb_massstor_reset(dev);
+	usb_pipe_clear_halt(&dev->ctrl_pipe, dev->pipes[bulk_in_idx].pipe);
+	usb_pipe_clear_halt(&dev->ctrl_pipe, dev->pipes[bulk_out_idx].pipe);
+}
+
+/** Get max LUN of a mass storage device.
+ *
+ * @see usb_masstor_get_lun_count
+ *
+ * @warning Error from this command does not necessarily indicate malfunction
+ * of the device. Device does not need to support this request.
+ * You shall rather use usb_masstor_get_lun_count.
+ *
+ * @param dev Mass storage device.
+ * @return Error code of maximum LUN (index, not count).
+ */
+int usb_massstor_get_max_lun(usb_device_t *dev)
+{
+	uint8_t max_lun;
+	size_t data_recv_len;
+	int rc = usb_control_request_get(&dev->ctrl_pipe,
+	    USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE,
+	    0xFE, 0, dev->interface_no, &max_lun, 1, &data_recv_len);
+	if (rc != EOK) {
+		return rc;
+	}
+	if (data_recv_len != 1) {
+		return EEMPTY;
+	}
+	return (int) max_lun;
+}
+
+/** Get number of LUNs supported by mass storage device.
+ *
+ * @warning This function hides any error during the request
+ * (typically that shall not be a problem).
+ *
+ * @param dev Mass storage device.
+ * @return Number of LUNs.
+ */
+size_t usb_masstor_get_lun_count(usb_device_t *dev)
+{
+	int max_lun = usb_massstor_get_max_lun(dev);
+	if (max_lun < 0) {
+		max_lun = 1;
+	} else {
+		max_lun++;
+	}
+
+	return (size_t) max_lun;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmast/mast.h
===================================================================
--- uspace/drv/usbmast/mast.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmast/mast.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmast
+ * @{
+ */
+/** @file
+ * Generic functions for USB mass storage.
+ */
+
+#ifndef USB_USBMAST_MAST_H_
+#define USB_USBMAST_MAST_H_
+
+#include <sys/types.h>
+#include <usb/usb.h>
+#include <usb/dev/pipes.h>
+#include <usb/dev/driver.h>
+
+/** Result of SCSI INQUIRY command.
+ * This is already parsed structure, not the original buffer returned by
+ * the device.
+ */
+typedef struct {
+	/** SCSI peripheral device type. */
+	int peripheral_device_type;
+	/** Whether the device is removable. */
+	bool removable;
+	/** Vendor ID string. */
+	char vendor_id[9];
+	/** Product ID and product revision string. */
+	char product_and_revision[12];
+} usb_massstor_inquiry_result_t;
+
+int usb_massstor_data_in(usb_device_t *dev, size_t, size_t,
+    uint32_t, uint8_t, void *, size_t, void *, size_t, size_t *);
+int usb_massstor_reset(usb_device_t *);
+void usb_massstor_reset_recovery(usb_device_t *, size_t, size_t);
+int usb_massstor_get_max_lun(usb_device_t *);
+size_t usb_masstor_get_lun_count(usb_device_t *);
+int usb_massstor_inquiry(usb_device_t *, size_t, size_t,
+    usb_massstor_inquiry_result_t *);
+const char *usb_str_masstor_scsi_peripheral_device_type(int);
+
+#endif
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmast/scsi.h
===================================================================
--- uspace/drv/usbmast/scsi.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmast/scsi.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmast
+ * @{
+ */
+/** @file
+ * SCSI related structures.
+ */
+
+#ifndef USB_USBMAST_SCSI_H_
+#define USB_USBMAST_SCSI_H_
+
+#include <sys/types.h>
+#include <usb/usb.h>
+
+typedef struct {
+	uint8_t op_code;
+	uint8_t lun_evpd;
+	uint8_t page_code;
+	uint16_t alloc_length;
+	uint8_t ctrl;
+} __attribute__((packed)) scsi_cmd_inquiry_t;
+
+#endif
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmast/usbmast.ma
===================================================================
--- uspace/drv/usbmast/usbmast.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmast/usbmast.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,1 @@
+50 usb&interface&class=mass-storage&subclass=0x06&protocol=0x50
Index: uspace/drv/usbmid/Makefile
===================================================================
--- uspace/drv/usbmid/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmid/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,48 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+
+LIBS = \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+	
+BINARY = usbmid
+
+SOURCES = \
+	dump.c \
+	explore.c \
+	main.c \
+	usbmid.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/usbmid/dump.c
===================================================================
--- uspace/drv/usbmid/dump.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmid/dump.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmid
+ * @{
+ */
+/**
+ * @file
+ * Dumping and debugging functions.
+ */
+#include <errno.h>
+#include <str_error.h>
+#include <stdlib.h>
+#include <usb/dev/pipes.h>
+#include <usb/dev/dp.h>
+#include <usb/classes/classes.h>
+#include "usbmid.h"
+
+/** Dump found descriptor.
+ *
+ * @param data Descriptor data.
+ * @param depth Nesting depth.
+ */
+static void dump_tree_descriptor(uint8_t *data, size_t depth)
+{
+	if (data == NULL) {
+		return;
+	}
+	int type = (int) *(data + 1);
+	if (type == USB_DESCTYPE_INTERFACE) {
+		usb_standard_interface_descriptor_t *descriptor
+		    = (usb_standard_interface_descriptor_t *) data;
+		usb_log_info("Found interface: %s (0x%02x/0x%02x/0x%02x).\n",
+		    usb_str_class(descriptor->interface_class),
+		    (int) descriptor->interface_class,
+		    (int) descriptor->interface_subclass,
+		    (int) descriptor->interface_protocol);
+	}
+}
+
+/** Dump tree of descriptors.
+ *
+ * @param parser Descriptor parser.
+ * @param data Descriptor parser data.
+ * @param root Pointer to current root.
+ * @param depth Nesting depth.
+ */
+static void dump_tree_internal(usb_dp_parser_t *parser, usb_dp_parser_data_t *data,
+    uint8_t *root, size_t depth)
+{
+	if (root == NULL) {
+		return;
+	}
+	dump_tree_descriptor(root, depth);
+	uint8_t *child = usb_dp_get_nested_descriptor(parser, data, root);
+	do {
+		dump_tree_internal(parser, data, child, depth + 1);
+		child = usb_dp_get_sibling_descriptor(parser, data, root, child);
+	} while (child != NULL);
+}
+
+/** Dump descriptor tree.
+ *
+ * @param parser Descriptor parser.
+ * @param data Descriptor parser data.
+ */
+static void dump_tree(usb_dp_parser_t *parser, usb_dp_parser_data_t *data)
+{
+	uint8_t *ptr = data->data;
+	dump_tree_internal(parser, data, ptr, 0);
+}
+
+/** Dump given descriptors.
+ *
+ * @param descriptors Descriptors buffer (typically full config descriptor).
+ * @param length Size of @p descriptors buffer in bytes.
+ */
+void usbmid_dump_descriptors(uint8_t *descriptors, size_t length)
+{
+	usb_dp_parser_data_t data = {
+		.data = descriptors,
+		.size = length,
+		.arg = NULL
+	};
+
+	usb_dp_parser_t parser = {
+		.nesting = usb_dp_standard_descriptor_nesting
+	};
+
+	dump_tree(&parser, &data);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmid/explore.c
===================================================================
--- uspace/drv/usbmid/explore.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmid/explore.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmid
+ * @{
+ */
+/**
+ * @file
+ * Exploration of available interfaces in the USB device.
+ */
+#include <errno.h>
+#include <str_error.h>
+#include <stdlib.h>
+#include <usb/classes/classes.h>
+#include <usb/dev/request.h>
+#include <usb/dev/dp.h>
+#include <usb/ddfiface.h>
+#include "usbmid.h"
+
+/** Operations of the device itself. */
+static ddf_dev_ops_t mid_device_ops = {
+	.interfaces[USB_DEV_IFACE] = &usb_iface_hub_impl
+};
+
+/** Tell whether given interface is already in the list.
+ *
+ * @param list List of usbmid_interface_t members to be searched.
+ * @param interface_no Interface number caller is looking for.
+ * @return Interface @p interface_no is already present in the list.
+ */
+static bool interface_in_list(link_t *list, int interface_no)
+{
+	link_t *l;
+	for (l = list->next; l != list; l = l->next) {
+		usbmid_interface_t *iface
+		    = list_get_instance(l, usbmid_interface_t, link);
+		if (iface->interface_no == interface_no) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
+/** Create list of interfaces from configuration descriptor.
+ *
+ * @param config_descriptor Configuration descriptor.
+ * @param config_descriptor_size Size of configuration descriptor in bytes.
+ * @param list List where to add the interfaces.
+ */
+static void create_interfaces(uint8_t *config_descriptor,
+    size_t config_descriptor_size, link_t *list)
+{
+	usb_dp_parser_data_t data = {
+		.data = config_descriptor,
+		.size = config_descriptor_size,
+		.arg = NULL
+	};
+
+	usb_dp_parser_t parser = {
+		.nesting = usb_dp_standard_descriptor_nesting
+	};
+
+	uint8_t *interface_ptr = usb_dp_get_nested_descriptor(&parser, &data,
+	    data.data);
+	if (interface_ptr == NULL) {
+		return;
+	}
+
+	do {
+		if (interface_ptr[1] != USB_DESCTYPE_INTERFACE) {
+			goto next_descriptor;
+		}
+
+		usb_standard_interface_descriptor_t *interface
+		    = (usb_standard_interface_descriptor_t *) interface_ptr;
+
+		/* Skip alternate interfaces. */
+		if (!interface_in_list(list, interface->interface_number)) {
+			usbmid_interface_t *iface
+			    = malloc(sizeof(usbmid_interface_t));
+			if (iface == NULL) {
+				break;
+			}
+			link_initialize(&iface->link);
+			iface->fun = NULL;
+			iface->interface_no = interface->interface_number;
+			iface->interface = interface;
+
+			list_append(&iface->link, list);
+		}
+
+		/* TODO: add the alternatives and create match ids from them
+		 * as well.
+		 */
+
+next_descriptor:
+		interface_ptr = usb_dp_get_sibling_descriptor(&parser, &data,
+		    data.data, interface_ptr);
+
+	} while (interface_ptr != NULL);
+
+}
+
+/** Explore MID device.
+ *
+ * We expect that @p dev is initialized and session on control pipe is
+ * started.
+ *
+ * @param dev Device to be explored.
+ * @return Whether to accept this device from devman.
+ */
+bool usbmid_explore_device(usb_device_t *dev)
+{
+	int rc;
+
+	int dev_class = dev->descriptors.device.device_class;
+	if (dev_class != USB_CLASS_USE_INTERFACE) {
+		usb_log_warning(
+		    "Device class: %d (%s), but expected class 0.\n",
+		    dev_class, usb_str_class(dev_class));
+		usb_log_error("Not multi interface device, refusing.\n");
+		return false;
+	}
+
+	/* Short cuts to save on typing ;-). */
+	uint8_t *config_descriptor_raw = dev->descriptors.configuration;
+	size_t config_descriptor_size = dev->descriptors.configuration_size;
+	usb_standard_configuration_descriptor_t *config_descriptor =
+	    (usb_standard_configuration_descriptor_t *) config_descriptor_raw;
+
+	/* Select the first configuration */
+	rc = usb_request_set_configuration(&dev->ctrl_pipe,
+	    config_descriptor->configuration_number);
+	if (rc != EOK) {
+		usb_log_error("Failed to set device configuration: %s.\n",
+		    str_error(rc));
+		return false;
+	}
+
+	/* Create control function */
+	ddf_fun_t *ctl_fun = ddf_fun_create(dev->ddf_dev, fun_exposed, "ctl");
+	if (ctl_fun == NULL) {
+		usb_log_error("Failed to create control function.\n");
+		return false;
+	}
+
+	ctl_fun->ops = &mid_device_ops;
+
+	rc = ddf_fun_bind(ctl_fun);
+	if (rc != EOK) {
+		usb_log_error("Failed to bind control function: %s.\n",
+		    str_error(rc));
+		return false;
+	}
+
+	/* Create interface children. */
+	link_t interface_list;
+	list_initialize(&interface_list);
+	create_interfaces(config_descriptor_raw, config_descriptor_size,
+	    &interface_list);
+
+	link_t *link;
+	for (link = interface_list.next; link != &interface_list;
+	    link = link->next) {
+		usbmid_interface_t *iface = list_get_instance(link,
+		    usbmid_interface_t, link);
+
+		usb_log_info("Creating child for interface %d (%s).\n",
+		    (int) iface->interface_no,
+		    usb_str_class(iface->interface->interface_class));
+
+		rc = usbmid_spawn_interface_child(dev, iface,
+		    &dev->descriptors.device, iface->interface);
+		if (rc != EOK) {
+			usb_log_error("Failed to create interface child: %s.\n",
+			    str_error(rc));
+		}
+	}
+
+	return true;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmid/main.c
===================================================================
--- uspace/drv/usbmid/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmid/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmid
+ * @{
+ */
+/**
+ * @file
+ * Main routines of USB multi interface device driver.
+ */
+#include <errno.h>
+#include <str_error.h>
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+#include <usb/dev/request.h>
+#include <usb/descriptor.h>
+#include <usb/dev/pipes.h>
+
+#include "usbmid.h"
+
+/** Callback when new MID device is attached to the host.
+ *
+ * @param gen_dev Generic DDF device representing the new device.
+ * @return Error code.
+ */
+static int usbmid_add_device(usb_device_t *dev)
+{
+	usb_log_info("Taking care of new MID `%s'.\n", dev->ddf_dev->name);
+
+	usb_pipe_start_long_transfer(&dev->ctrl_pipe);
+
+	bool accept = usbmid_explore_device(dev);
+
+	usb_pipe_end_long_transfer(&dev->ctrl_pipe);
+
+	if (!accept) {
+		return ENOTSUP;
+	}
+
+	return EOK;
+}
+
+/** USB MID driver ops. */
+static usb_driver_ops_t mid_driver_ops = {
+	.add_device = usbmid_add_device,
+};
+
+/** USB MID driver. */
+static usb_driver_t mid_driver = {
+	.name = NAME,
+	.ops = &mid_driver_ops,
+	.endpoints = NULL
+};
+
+int main(int argc, char *argv[])
+{
+	printf(NAME ": USB multi interface device driver.\n");
+
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+
+	return usb_driver_main(&mid_driver);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmid/usbmid.c
===================================================================
--- uspace/drv/usbmid/usbmid.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmid/usbmid.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmid
+ * @{
+ */
+/**
+ * @file
+ * Helper functions.
+ */
+#include <errno.h>
+#include <str_error.h>
+#include <stdlib.h>
+#include <usb_iface.h>
+#include <usb/ddfiface.h>
+#include <usb/dev/pipes.h>
+#include <usb/classes/classes.h>
+#include <usb/dev/recognise.h>
+#include "usbmid.h"
+
+/** Callback for DDF USB interface. */
+static int usb_iface_get_address_impl(ddf_fun_t *fun, devman_handle_t handle,
+    usb_address_t *address)
+{
+	return usb_iface_get_address_hub_impl(fun, handle, address);
+}
+
+/** Callback for DDF USB interface. */
+static int usb_iface_get_interface_impl(ddf_fun_t *fun, devman_handle_t handle,
+    int *iface_no)
+{
+	assert(fun);
+
+	usbmid_interface_t *iface = fun->driver_data;
+	assert(iface);
+
+	if (iface_no != NULL) {
+		*iface_no = iface->interface_no;
+	}
+
+	return EOK;
+}
+
+/** DDF interface of the child - interface function. */
+static usb_iface_t child_usb_iface = {
+	.get_hc_handle = usb_iface_get_hc_handle_hub_child_impl,
+	.get_address = usb_iface_get_address_impl,
+	.get_interface = usb_iface_get_interface_impl
+};
+
+/** Operations for children - interface functions. */
+static ddf_dev_ops_t child_device_ops = {
+	.interfaces[USB_DEV_IFACE] = &child_usb_iface
+};
+
+
+/** Spawn new child device from one interface.
+ *
+ * @param parent Parent MID device.
+ * @param iface Interface information.
+ * @param device_descriptor Device descriptor.
+ * @param interface_descriptor Interface descriptor.
+ * @return Error code.
+ */
+int usbmid_spawn_interface_child(usb_device_t *parent,
+    usbmid_interface_t *iface,
+    const usb_standard_device_descriptor_t *device_descriptor,
+    const usb_standard_interface_descriptor_t *interface_descriptor)
+{
+	ddf_fun_t *child = NULL;
+	char *child_name = NULL;
+	int rc;
+
+	/*
+	 * Name is class name followed by interface number.
+	 * The interface number shall provide uniqueness while the
+	 * class name something humanly understandable.
+	 */
+	rc = asprintf(&child_name, "%s%d",
+	    usb_str_class(interface_descriptor->interface_class),
+	    (int) interface_descriptor->interface_number);
+	if (rc < 0) {
+		goto error_leave;
+	}
+
+	/* Create the device. */
+	child = ddf_fun_create(parent->ddf_dev, fun_inner, child_name);
+	if (child == NULL) {
+		rc = ENOMEM;
+		goto error_leave;
+	}
+
+	iface->fun = child;
+
+	child->driver_data = iface;
+	child->ops = &child_device_ops;
+
+	rc = usb_device_create_match_ids_from_interface(device_descriptor,
+	    interface_descriptor,
+	    &child->match_ids);
+	if (rc != EOK) {
+		goto error_leave;
+	}
+
+	rc = ddf_fun_bind(child);
+	if (rc != EOK) {
+		goto error_leave;
+	}
+
+	return EOK;
+
+error_leave:
+	if (child != NULL) {
+		child->name = NULL;
+		/* This takes care of match_id deallocation as well. */
+		ddf_fun_destroy(child);
+	}
+	if (child_name != NULL) {
+		free(child_name);
+	}
+
+	return rc;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmid/usbmid.h
===================================================================
--- uspace/drv/usbmid/usbmid.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmid/usbmid.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmid
+ * @{
+ */
+/** @file
+ * Common definitions.
+ */
+
+#ifndef USBMID_H_
+#define USBMID_H_
+
+#include <adt/list.h>
+#include <ddf/driver.h>
+#include <usb/usb.h>
+#include <usb/dev/pipes.h>
+#include <usb/debug.h>
+#include <usb/dev/driver.h>
+
+#define NAME "usbmid"
+
+/** Container for single interface in a MID device. */
+typedef struct {
+	/** Function container. */
+	ddf_fun_t *fun;
+	/** Interface descriptor. */
+	usb_standard_interface_descriptor_t *interface;
+	/** Interface number. */
+	int interface_no;
+	/** List link. */
+	link_t link;
+} usbmid_interface_t;
+
+bool usbmid_explore_device(usb_device_t *);
+int usbmid_spawn_interface_child(usb_device_t *, usbmid_interface_t *,
+    const usb_standard_device_descriptor_t *,
+    const usb_standard_interface_descriptor_t *);
+void usbmid_dump_descriptors(uint8_t *, size_t);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/usbmid/usbmid.ma
===================================================================
--- uspace/drv/usbmid/usbmid.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmid/usbmid.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,1 @@
+100 usb&mid
Index: uspace/drv/usbmouse/Makefile
===================================================================
--- uspace/drv/usbmouse/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmouse/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,49 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+
+LIBS = \
+	$(LIBUSBHID_PREFIX)/libusbhid.a \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBUSBHID_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+
+BINARY = usbmouse
+
+SOURCES = \
+	init.c \
+	main.c \
+	mouse.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/usbmouse/init.c
===================================================================
--- uspace/drv/usbmouse/init.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmouse/init.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmouse
+ * @{
+ */
+/**
+ * @file
+ * Initialization routines for USB mouse driver.
+ */
+#include "mouse.h"
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+#include <usb/hid/hid.h>
+#include <usb/dev/request.h>
+#include <usb/hid/request.h>
+#include <errno.h>
+
+/** Mouse polling endpoint description for boot protocol subclass. */
+usb_endpoint_description_t poll_endpoint_description = {
+	.transfer_type = USB_TRANSFER_INTERRUPT,
+	.direction = USB_DIRECTION_IN,
+	.interface_class = USB_CLASS_HID,
+	.interface_subclass = USB_HID_SUBCLASS_BOOT,
+	.interface_protocol = USB_HID_PROTOCOL_MOUSE,
+	.flags = 0
+};
+
+static void default_connection_handler(ddf_fun_t *, ipc_callid_t, ipc_call_t *);
+/** Device ops for USB mouse. */
+static ddf_dev_ops_t mouse_ops = {
+	.default_handler = default_connection_handler
+};
+
+/** Default handler for IPC methods not handled by DDF.
+ *
+ * @param fun Device function handling the call.
+ * @param icallid Call id.
+ * @param icall Call data.
+ */
+void default_connection_handler(ddf_fun_t *fun,
+    ipc_callid_t icallid, ipc_call_t *icall)
+{
+	sysarg_t method = IPC_GET_IMETHOD(*icall);
+
+	usb_mouse_t *mouse = (usb_mouse_t *) fun->driver_data;
+	assert(mouse != NULL);
+
+	if (method == IPC_M_CONNECT_TO_ME) {
+		int callback = IPC_GET_ARG5(*icall);
+
+		if (mouse->console_phone != -1) {
+			async_answer_0(icallid, ELIMIT);
+			return;
+		}
+
+		mouse->console_phone = callback;
+		async_answer_0(icallid, EOK);
+		return;
+	}
+
+	async_answer_0(icallid, EINVAL);
+}
+
+/** Create USB mouse device.
+ *
+ * The mouse device is stored into <code>dev-&gt;driver_data</code>.
+ *
+ * @param dev Generic device.
+ * @return Error code.
+ */
+int usb_mouse_create(usb_device_t *dev)
+{
+	usb_mouse_t *mouse = malloc(sizeof(usb_mouse_t));
+	if (mouse == NULL) {
+		return ENOMEM;
+	}
+	mouse->dev = dev;
+	mouse->console_phone = -1;
+
+	int rc;
+
+	/* Create DDF function. */
+	mouse->mouse_fun = ddf_fun_create(dev->ddf_dev, fun_exposed, "mouse");
+	if (mouse->mouse_fun == NULL) {
+		rc = ENOMEM;
+		goto leave;
+	}
+
+	mouse->mouse_fun->ops = &mouse_ops;
+
+	rc = ddf_fun_bind(mouse->mouse_fun);
+	if (rc != EOK) {
+		goto leave;
+	}
+
+	/* Add the function to mouse class. */
+	rc = ddf_fun_add_to_class(mouse->mouse_fun, "mouse");
+	if (rc != EOK) {
+		goto leave;
+	}
+	
+	/* Set the boot protocol. */
+	rc = usbhid_req_set_protocol(&dev->ctrl_pipe, dev->interface_no,
+	    USB_HID_PROTOCOL_BOOT);
+	if (rc != EOK) {
+		goto leave;
+	}
+	
+	/* Everything all right. */
+	dev->driver_data = mouse;
+	mouse->mouse_fun->driver_data = mouse;
+
+	return EOK;
+
+leave:
+	free(mouse);
+
+	return rc;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmouse/main.c
===================================================================
--- uspace/drv/usbmouse/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmouse/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmouse
+ * @{
+ */
+/**
+ * @file
+ * Main routines of USB boot protocol mouse driver.
+ */
+#include "mouse.h"
+#include <usb/debug.h>
+#include <usb/dev/poll.h>
+#include <errno.h>
+#include <str_error.h>
+
+/** Callback when new mouse device is attached and recognised by DDF.
+ *
+ * @param dev Representation of a generic DDF device.
+ * @return Error code.
+ */
+static int usbmouse_add_device(usb_device_t *dev)
+{
+	int rc = usb_mouse_create(dev);
+	if (rc != EOK) {
+		usb_log_error("Failed to initialize device driver: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+
+	usb_log_debug("Polling pipe at endpoint %d.\n",
+	    dev->pipes[0].pipe->endpoint_no);
+
+	rc = usb_device_auto_poll(dev, 0,
+	    usb_mouse_polling_callback, dev->pipes[0].pipe->max_packet_size,
+	    usb_mouse_polling_ended_callback, dev->driver_data);
+
+	if (rc != EOK) {
+		usb_log_error("Failed to start polling fibril: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+
+	usb_log_info("controlling new mouse (handle %" PRIun ").\n",
+	    dev->ddf_dev->handle);
+
+	return EOK;
+}
+
+/** USB mouse driver ops. */
+static usb_driver_ops_t mouse_driver_ops = {
+	.add_device = usbmouse_add_device,
+};
+
+static usb_endpoint_description_t *endpoints[] = {
+	&poll_endpoint_description,
+	NULL
+};
+
+/** USB mouse driver. */
+static usb_driver_t mouse_driver = {
+	.name = NAME,
+	.ops = &mouse_driver_ops,
+	.endpoints = endpoints
+};
+
+int main(int argc, char *argv[])
+{
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+
+	return usb_driver_main(&mouse_driver);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmouse/mouse.c
===================================================================
--- uspace/drv/usbmouse/mouse.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmouse/mouse.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmouse
+ * @{
+ */
+/**
+ * @file
+ * Actual handling of USB mouse protocol.
+ */
+#include "mouse.h"
+#include <usb/debug.h>
+#include <errno.h>
+#include <str_error.h>
+#include <ipc/mouse.h>
+
+/** Mouse polling callback.
+ *
+ * @param dev Device that is being polled.
+ * @param buffer Data buffer.
+ * @param buffer_size Buffer size in bytes.
+ * @param arg Custom argument - points to usb_mouse_t.
+ * @return Always true.
+ */
+bool usb_mouse_polling_callback(usb_device_t *dev,
+    uint8_t *buffer, size_t buffer_size, void *arg)
+{
+	usb_mouse_t *mouse = (usb_mouse_t *) arg;
+
+	usb_log_debug2("got buffer: %s.\n",
+	    usb_debug_str_buffer(buffer, buffer_size, 0));
+
+	uint8_t butt = buffer[0];
+	char str_buttons[4] = {
+		butt & 1 ? '#' : '.',
+		butt & 2 ? '#' : '.',
+		butt & 4 ? '#' : '.',
+		0
+	};
+
+	int shift_x = ((int) buffer[1]) - 127;
+	int shift_y = ((int) buffer[2]) - 127;
+	int wheel = ((int) buffer[3]) - 127;
+
+	if (buffer[1] == 0) {
+		shift_x = 0;
+	}
+	if (buffer[2] == 0) {
+		shift_y = 0;
+	}
+	if (buffer[3] == 0) {
+		wheel = 0;
+	}
+
+	if (mouse->console_phone >= 0) {
+		if ((shift_x != 0) || (shift_y != 0)) {
+			/* FIXME: guessed for QEMU */
+			async_req_2_0(mouse->console_phone,
+			    MEVENT_MOVE,
+			    - shift_x / 10,  - shift_y / 10);
+		}
+		if (butt) {
+			/* FIXME: proper button clicking. */
+			async_req_2_0(mouse->console_phone,
+			    MEVENT_BUTTON, 1, 1);
+			async_req_2_0(mouse->console_phone,
+			    MEVENT_BUTTON, 1, 0);
+		}
+	}
+
+	usb_log_debug("buttons=%s  dX=%+3d  dY=%+3d  wheel=%+3d\n",
+	    str_buttons, shift_x, shift_y, wheel);
+
+	/* Guess. */
+	async_usleep(1000);
+
+	return true;
+}
+
+/** Callback when polling is terminated.
+ *
+ * @param dev Device where the polling terminated.
+ * @param recurring_errors Whether the polling was terminated due to
+ *	recurring errors.
+ * @param arg Custom argument - points to usb_mouse_t.
+ */
+void usb_mouse_polling_ended_callback(usb_device_t *dev,
+    bool recurring_errors, void *arg)
+{
+	usb_mouse_t *mouse = (usb_mouse_t *) arg;
+
+	async_hangup(mouse->console_phone);
+	mouse->console_phone = -1;
+
+	usb_device_destroy(dev);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmouse/mouse.h
===================================================================
--- uspace/drv/usbmouse/mouse.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmouse/mouse.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbmouse
+ * @{
+ */
+/**
+ * @file
+ * Common definitions for USB mouse driver.
+ */
+#ifndef USBMOUSE_MOUSE_H_
+#define USBMOUSE_MOUSE_H_
+
+#include <usb/dev/driver.h>
+#include <usb/dev/pipes.h>
+#include <time.h>
+
+#define NAME "usbmouse"
+
+/** Container for USB mouse device. */
+typedef struct {
+	/** Generic device container. */
+	usb_device_t *dev;
+	/** Function representing the device. */
+	ddf_fun_t *mouse_fun;
+	/** Polling interval in microseconds. */
+	suseconds_t poll_interval_us;
+	/** IPC phone to console (consumer). */
+	int console_phone;
+} usb_mouse_t;
+
+#define POLL_PIPE(dev) ((dev)->pipes[0].pipe)
+
+extern usb_endpoint_description_t poll_endpoint_description;
+
+int usb_mouse_create(usb_device_t *);
+
+bool usb_mouse_polling_callback(usb_device_t *, uint8_t *, size_t, void *);
+void usb_mouse_polling_ended_callback(usb_device_t *, bool, void *);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/usbmouse/usbmouse.ma
===================================================================
--- uspace/drv/usbmouse/usbmouse.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/usbmouse/usbmouse.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,1 @@
+100 usb&interface&class=HID&subclass=0x01&protocol=0x02
Index: uspace/drv/vhc/Makefile
===================================================================
--- uspace/drv/vhc/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,55 @@
+#
+# Copyright (c) 2010 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+LIBS = \
+	$(LIBUSBDEV_PREFIX)/libusbdev.a \
+	$(LIBUSBHOST_PREFIX)/libusbhost.a \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBUSBVIRT_PREFIX)/libusbvirt.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSBVIRT_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBUSBHOST_PREFIX)/include \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+BINARY = vhc
+
+SOURCES = \
+	hub/virthub.c \
+	hub/hub.c \
+	hub/virthubops.c \
+	conndev.c \
+	connhost.c \
+	devconn.c \
+	hub.c \
+	main.c \
+	transfer.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/vhc/conn.h
===================================================================
--- uspace/drv/vhc/conn.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/conn.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * @brief Connection handling of incoming calls.
+ */
+#ifndef VHCD_CONN_H_
+#define VHCD_CONN_H_
+
+#include <usb/usb.h>
+#include <usbhc_iface.h>
+#include <usb_iface.h>
+#include "vhcd.h"
+
+extern usbhc_iface_t vhc_iface;
+extern usb_iface_t vhc_usb_iface;
+extern usb_iface_t rh_usb_iface;
+
+void default_connection_handler(ddf_fun_t *, ipc_callid_t, ipc_call_t *);
+void on_client_close(ddf_fun_t *);
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/vhc/conndev.c
===================================================================
--- uspace/drv/vhc/conndev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/conndev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * Connection handling of calls from virtual device (implementation).
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <ddf/driver.h>
+#include <usbvirt/ipc.h>
+#include "conn.h"
+
+static fibril_local uintptr_t plugged_device_handle = 0;
+#define PLUGGED_DEVICE_NAME_MAXLEN 256
+static fibril_local char plugged_device_name[PLUGGED_DEVICE_NAME_MAXLEN + 1] = "<unknown>";
+
+/** Receive device name.
+ *
+ * @warning Errors are silently ignored.
+ *
+ * @param phone Phone to the virtual device.
+ */
+static void receive_device_name(int phone)
+{
+	aid_t opening_request = async_send_0(phone, IPC_M_USBVIRT_GET_NAME, NULL);
+	if (opening_request == 0) {
+		return;
+	}
+
+
+	ipc_call_t data_request_call;
+	aid_t data_request = async_data_read(phone,
+	     plugged_device_name, PLUGGED_DEVICE_NAME_MAXLEN,
+	     &data_request_call);
+
+	if (data_request == 0) {
+		async_wait_for(opening_request, NULL);
+		return;
+	}
+
+	sysarg_t data_request_rc;
+	sysarg_t opening_request_rc;
+	async_wait_for(data_request, &data_request_rc);
+	async_wait_for(opening_request, &opening_request_rc);
+
+	if ((data_request_rc != EOK) || (opening_request_rc != EOK)) {
+		return;
+	}
+
+	size_t len = IPC_GET_ARG2(data_request_call);
+	plugged_device_name[len] = 0;
+}
+
+/** Default handler for IPC methods not handled by DDF.
+ *
+ * @param fun Device handling the call.
+ * @param icallid Call id.
+ * @param icall Call data.
+ */
+void default_connection_handler(ddf_fun_t *fun,
+    ipc_callid_t icallid, ipc_call_t *icall)
+{
+	vhc_data_t *vhc = fun->dev->driver_data;
+	sysarg_t method = IPC_GET_IMETHOD(*icall);
+
+	if (method == IPC_M_CONNECT_TO_ME) {
+		int callback = IPC_GET_ARG5(*icall);
+		int rc = vhc_virtdev_plug(vhc, callback,
+		    &plugged_device_handle);
+		if (rc != EOK) {
+			async_answer_0(icallid, rc);
+			async_hangup(callback);
+			return;
+		}
+
+		async_answer_0(icallid, EOK);
+
+		receive_device_name(callback);
+
+		usb_log_info("New virtual device `%s' (id: %" PRIxn ").\n",
+		    plugged_device_name, plugged_device_handle);
+
+		return;
+	}
+
+	async_answer_0(icallid, EINVAL);
+}
+
+/** Callback when client disconnects.
+ *
+ * Used to unplug virtual USB device.
+ *
+ * @param fun
+ */
+void on_client_close(ddf_fun_t *fun)
+{
+	vhc_data_t *vhc = fun->dev->driver_data;
+
+	if (plugged_device_handle != 0) {
+		usb_log_info("Virtual device `%s' disconnected (id: %" PRIxn ").\n",
+		    plugged_device_name, plugged_device_handle);
+		vhc_virtdev_unplug(vhc, plugged_device_handle);
+	}
+}
+
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/connhost.c
===================================================================
--- uspace/drv/vhc/connhost.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/connhost.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,490 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * Host controller interface implementation.
+ */
+#include <assert.h>
+#include <errno.h>
+#include <usb/usb.h>
+#include <usb/ddfiface.h>
+#include <usb/debug.h>
+#include <usbhc_iface.h>
+#include "vhcd.h"
+
+#define GET_VHC_DATA(fun) \
+	((vhc_data_t *)fun->dev->driver_data)
+#define VHC_DATA(vhc, fun) \
+	vhc_data_t *vhc = GET_VHC_DATA(fun); assert(vhc->magic == 0xdeadbeef)
+
+#define UNSUPPORTED(methodname) \
+	usb_log_warning("Unsupported interface method `%s()' in %s:%d.\n", \
+	    methodname, __FILE__, __LINE__)
+
+/** Found free USB address.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] speed Speed of the device that will get this address.
+ * @param[out] address Non-null pointer where to store the free address.
+ * @return Error code.
+ */
+static int request_address(ddf_fun_t *fun, usb_speed_t speed,
+    usb_address_t *address)
+{
+	VHC_DATA(vhc, fun);
+
+	usb_address_t addr = device_keeper_get_free_address(&vhc->dev_keeper,
+	    USB_SPEED_HIGH);
+	if (addr < 0) {
+		return addr;
+	}
+
+	if (address != NULL) {
+		*address = addr;
+	}
+
+	return EOK;
+}
+
+/** Bind USB address with device devman handle.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] address USB address of the device.
+ * @param[in] handle Devman handle of the device.
+ * @return Error code.
+ */
+static int bind_address(ddf_fun_t *fun,
+    usb_address_t address, devman_handle_t handle)
+{
+	VHC_DATA(vhc, fun);
+	usb_log_debug("Binding handle %" PRIun " to address %d.\n",
+	    handle, address);
+	usb_device_keeper_bind(&vhc->dev_keeper, address, handle);
+
+	return EOK;
+}
+
+/** Find device handle by address interface function.
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] address Address in question.
+ * @param[out] handle Where to store device handle if found.
+ * @return Error code.
+ */
+static int find_by_address(ddf_fun_t *fun, usb_address_t address,
+    devman_handle_t *handle)
+{
+	VHC_DATA(vhc, fun);
+	bool found =
+	    usb_device_keeper_find_by_address(&vhc->dev_keeper, address, handle);
+	return found ? EOK : ENOENT;
+}
+
+/** Release previously requested address.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] address USB address to be released.
+ * @return Error code.
+ */
+static int release_address(ddf_fun_t *fun, usb_address_t address)
+{
+	VHC_DATA(vhc, fun);
+	usb_log_debug("Releasing address %d...\n", address);
+	usb_device_keeper_release(&vhc->dev_keeper, address);
+
+	return ENOTSUP;
+}
+
+/** Register endpoint for bandwidth reservation.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] address USB address of the device.
+ * @param[in] speed Endpoint speed (invalid means to use device one).
+ * @param[in] endpoint Endpoint number.
+ * @param[in] transfer_type USB transfer type.
+ * @param[in] direction Endpoint data direction.
+ * @param[in] max_packet_size Max packet size of the endpoint.
+ * @param[in] interval Polling interval.
+ * @return Error code.
+ */
+static int register_endpoint(ddf_fun_t *fun,
+    usb_address_t address, usb_speed_t speed, usb_endpoint_t endpoint,
+    usb_transfer_type_t transfer_type, usb_direction_t direction,
+    size_t max_packet_size, unsigned int interval)
+{
+	VHC_DATA(vhc, fun);
+
+	endpoint_t *ep = malloc(sizeof(endpoint_t));
+	if (ep == NULL) {
+		return ENOMEM;
+	}
+
+	int rc = endpoint_init(ep, address, endpoint, direction, transfer_type,
+	    USB_SPEED_FULL, 1);
+	if (rc != EOK) {
+		free(ep);
+		return rc;
+	}
+
+	rc = usb_endpoint_manager_register_ep(&vhc->ep_manager, ep, 1);
+	if (rc != EOK) {
+		endpoint_destroy(ep);
+		return rc;
+	}
+
+	return EOK;
+}
+
+/** Unregister endpoint (free some bandwidth reservation).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] address USB address of the device.
+ * @param[in] endpoint Endpoint number.
+ * @param[in] direction Endpoint data direction.
+ * @return Error code.
+ */
+static int unregister_endpoint(ddf_fun_t *fun, usb_address_t address,
+    usb_endpoint_t endpoint, usb_direction_t direction)
+{
+	VHC_DATA(vhc, fun);
+
+	endpoint_t *ep = usb_endpoint_manager_get_ep(&vhc->ep_manager,
+	    address, endpoint, direction, NULL);
+	if (ep == NULL) {
+		return ENOENT;
+	}
+
+	int rc = usb_endpoint_manager_unregister_ep(&vhc->ep_manager,
+	    address, endpoint, direction);
+
+	return rc;
+}
+
+/** Schedule interrupt out transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Data to be sent (in USB endianess, allocated and deallocated
+ *	by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int interrupt_out(ddf_fun_t *fun, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	VHC_DATA(vhc, fun);
+
+	vhc_transfer_t *transfer = vhc_transfer_create(target.address,
+	    target.endpoint, USB_DIRECTION_OUT, USB_TRANSFER_INTERRUPT,
+	    fun, arg);
+	if (transfer == NULL) {
+		return ENOMEM;
+	}
+
+	transfer->data_buffer = data;
+	transfer->data_buffer_size = size;
+	transfer->callback_out = callback;
+
+	int rc = vhc_virtdev_add_transfer(vhc, transfer);
+	if (rc != EOK) {
+		free(transfer);
+		return rc;
+	}
+
+	return EOK;
+}
+
+/** Schedule interrupt in transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Buffer where to store the data (in USB endianess,
+ *	allocated and deallocated by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int interrupt_in(ddf_fun_t *fun, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	VHC_DATA(vhc, fun);
+
+	vhc_transfer_t *transfer = vhc_transfer_create(target.address,
+	    target.endpoint, USB_DIRECTION_IN, USB_TRANSFER_INTERRUPT,
+	    fun, arg);
+	if (transfer == NULL) {
+		return ENOMEM;
+	}
+
+	transfer->data_buffer = data;
+	transfer->data_buffer_size = size;
+	transfer->callback_in = callback;
+
+	int rc = vhc_virtdev_add_transfer(vhc, transfer);
+	if (rc != EOK) {
+		free(transfer);
+		return rc;
+	}
+
+	return EOK;
+}
+
+/** Schedule bulk out transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Data to be sent (in USB endianess, allocated and deallocated
+ *	by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int bulk_out(ddf_fun_t *fun, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	UNSUPPORTED("bulk_out");
+
+	return ENOTSUP;
+}
+
+/** Schedule bulk in transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] data Buffer where to store the data (in USB endianess,
+ *	allocated and deallocated by the caller).
+ * @param[in] size Size of the @p data buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int bulk_in(ddf_fun_t *fun, usb_target_t target,
+    void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	UNSUPPORTED("bulk_in");
+
+	return ENOTSUP;
+}
+
+/** Schedule control write transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] setup_packet Setup packet buffer (in USB endianess, allocated
+ *	and deallocated by the caller).
+ * @param[in] setup_packet_size Size of @p setup_packet buffer in bytes.
+ * @param[in] data_buffer Data buffer (in USB endianess, allocated and
+ *	deallocated by the caller).
+ * @param[in] data_buffer_size Size of @p data_buffer buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int control_write(ddf_fun_t *fun, usb_target_t target,
+    void *setup_packet, size_t setup_packet_size,
+    void *data_buffer, size_t data_buffer_size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	VHC_DATA(vhc, fun);
+
+	vhc_transfer_t *transfer = vhc_transfer_create(target.address,
+	    target.endpoint, USB_DIRECTION_OUT, USB_TRANSFER_CONTROL,
+	    fun, arg);
+	if (transfer == NULL) {
+		return ENOMEM;
+	}
+
+	transfer->setup_buffer = setup_packet;
+	transfer->setup_buffer_size = setup_packet_size;
+	transfer->data_buffer = data_buffer;
+	transfer->data_buffer_size = data_buffer_size;
+	transfer->callback_out = callback;
+
+	int rc = vhc_virtdev_add_transfer(vhc, transfer);
+	if (rc != EOK) {
+		free(transfer);
+		return rc;
+	}
+
+	return EOK;
+}
+
+/** Schedule control read transfer.
+ *
+ * The callback is supposed to be called once the transfer (on the wire) is
+ * complete regardless of the outcome.
+ * However, the callback could be called only when this function returns
+ * with success status (i.e. returns EOK).
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] target Target pipe (address and endpoint number) specification.
+ * @param[in] setup_packet Setup packet buffer (in USB endianess, allocated
+ *	and deallocated by the caller).
+ * @param[in] setup_packet_size Size of @p setup_packet buffer in bytes.
+ * @param[in] data_buffer Buffer where to store the data (in USB endianess,
+ *	allocated and deallocated by the caller).
+ * @param[in] data_buffer_size Size of @p data_buffer buffer in bytes.
+ * @param[in] callback Callback to be issued once the transfer is complete.
+ * @param[in] arg Pass-through argument to the callback.
+ * @return Error code.
+ */
+static int control_read(ddf_fun_t *fun, usb_target_t target,
+    void *setup_packet, size_t setup_packet_size,
+    void *data_buffer, size_t data_buffer_size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	VHC_DATA(vhc, fun);
+
+	vhc_transfer_t *transfer = vhc_transfer_create(target.address,
+	    target.endpoint, USB_DIRECTION_IN, USB_TRANSFER_CONTROL,
+	    fun, arg);
+	if (transfer == NULL) {
+		return ENOMEM;
+	}
+
+	transfer->setup_buffer = setup_packet;
+	transfer->setup_buffer_size = setup_packet_size;
+	transfer->data_buffer = data_buffer;
+	transfer->data_buffer_size = data_buffer_size;
+	transfer->callback_in = callback;
+
+	int rc = vhc_virtdev_add_transfer(vhc, transfer);
+	if (rc != EOK) {
+		free(transfer);
+		return rc;
+	}
+
+	return EOK;
+}
+
+static int tell_address(ddf_fun_t *fun, devman_handle_t handle,
+    usb_address_t *address)
+{
+	UNSUPPORTED("tell_address");
+
+	return ENOTSUP;
+}
+
+static int usb_iface_get_hc_handle_rh_impl(ddf_fun_t *root_hub_fun,
+    devman_handle_t *handle)
+{
+	VHC_DATA(vhc, root_hub_fun);
+
+	*handle = vhc->hc_fun->handle;
+
+	return EOK;
+}
+
+static int tell_address_rh(ddf_fun_t *root_hub_fun, devman_handle_t handle,
+    usb_address_t *address)
+{
+	VHC_DATA(vhc, root_hub_fun);
+
+	if (handle == 0) {
+		handle = root_hub_fun->handle;
+	}
+
+	usb_log_debug("tell_address_rh(handle=%" PRIun ")\n", handle);
+	usb_address_t addr = usb_device_keeper_find(&vhc->dev_keeper, handle);
+	if (addr < 0) {
+		return addr;
+	} else {
+		*address = addr;
+		return EOK;
+	}
+}
+
+usbhc_iface_t vhc_iface = {
+	.request_address = request_address,
+	.bind_address = bind_address,
+	.find_by_address = find_by_address,
+	.release_address = release_address,
+
+	.register_endpoint = register_endpoint,
+	.unregister_endpoint = unregister_endpoint,
+
+	.interrupt_out = interrupt_out,
+	.interrupt_in = interrupt_in,
+
+	.bulk_in = bulk_in,
+	.bulk_out = bulk_out,
+
+	.control_write = control_write,
+	.control_read = control_read
+};
+
+usb_iface_t vhc_usb_iface = {
+	.get_hc_handle = usb_iface_get_hc_handle_hc_impl,
+	.get_address = tell_address
+};
+
+usb_iface_t rh_usb_iface = {
+	.get_hc_handle = usb_iface_get_hc_handle_rh_impl,
+	.get_address = tell_address_rh
+};
+
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/devconn.c
===================================================================
--- uspace/drv/vhc/devconn.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/devconn.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,86 @@
+#include <errno.h>
+#include "vhcd.h"
+#include "hub/virthub.h"
+
+
+static vhc_virtdev_t *vhc_virtdev_create()
+{
+	vhc_virtdev_t *dev = malloc(sizeof(vhc_virtdev_t));
+	if (dev == NULL) {
+		return NULL;
+	}
+	dev->address = 0;
+	dev->dev_phone = -1;
+	dev->dev_local = NULL;
+	dev->plugged = true;
+	link_initialize(&dev->link);
+	fibril_mutex_initialize(&dev->guard);
+	list_initialize(&dev->transfer_queue);
+
+	return dev;
+}
+
+static int vhc_virtdev_plug_generic(vhc_data_t *vhc,
+    int phone, usbvirt_device_t *virtdev,
+    uintptr_t *handle, bool connect)
+{
+	vhc_virtdev_t *dev = vhc_virtdev_create();
+	if (dev == NULL) {
+		return ENOMEM;
+	}
+
+	dev->dev_phone = phone;
+	dev->dev_local = virtdev;
+
+	fibril_mutex_lock(&vhc->guard);
+	list_append(&dev->link, &vhc->devices);
+	fibril_mutex_unlock(&vhc->guard);
+
+	fid_t fibril = fibril_create(vhc_transfer_queue_processor, dev);
+	if (fibril == 0) {
+		free(dev);
+		return ENOMEM;
+	}
+	fibril_add_ready(fibril);
+
+	if (handle != NULL) {
+		*handle = (uintptr_t) dev;
+	}
+
+	if (connect) {
+		// FIXME: check status
+		(void) virthub_connect_device(vhc->hub, dev);
+	}
+
+	return EOK;
+}
+
+int vhc_virtdev_plug(vhc_data_t *vhc, int phone, uintptr_t *handle)
+{
+	return vhc_virtdev_plug_generic(vhc, phone, NULL, handle, true);
+}
+
+int vhc_virtdev_plug_local(vhc_data_t *vhc, usbvirt_device_t *dev, uintptr_t *handle)
+{
+	return vhc_virtdev_plug_generic(vhc, -1, dev, handle, true);
+}
+
+int vhc_virtdev_plug_hub(vhc_data_t *vhc, usbvirt_device_t *dev, uintptr_t *handle)
+{
+	return vhc_virtdev_plug_generic(vhc, -1, dev, handle, false);
+}
+
+void vhc_virtdev_unplug(vhc_data_t *vhc, uintptr_t handle)
+{
+	vhc_virtdev_t *dev = (vhc_virtdev_t *) handle;
+
+	// FIXME: check status
+	(void) virthub_disconnect_device(vhc->hub, dev);
+
+	fibril_mutex_lock(&vhc->guard);
+	fibril_mutex_lock(&dev->guard);
+	dev->plugged = false;
+	list_remove(&dev->link);
+	fibril_mutex_unlock(&dev->guard);
+	fibril_mutex_unlock(&vhc->guard);
+}
Index: uspace/drv/vhc/hub.c
===================================================================
--- uspace/drv/vhc/hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * @brief Virtual USB hub.
+ */
+#include <usb/classes/classes.h>
+#include <usbvirt/device.h>
+#include <errno.h>
+#include <str_error.h>
+#include <stdlib.h>
+#include <ddf/driver.h>
+#include <devman.h>
+#include <usb/dev/hub.h>
+#include <usb/dev/recognise.h>
+
+#include "hub.h"
+//#include "hub/virthub.h"
+#include "vhcd.h"
+#include "conn.h"
+
+usbvirt_device_t virtual_hub_device = {
+	.name = "root hub",
+	.ops = &hub_ops,
+	.address = 0
+};
+
+static ddf_dev_ops_t rh_ops = {
+	.interfaces[USB_DEV_IFACE] = &rh_usb_iface,
+};
+
+static int hub_register_in_devman_fibril(void *arg);
+
+void virtual_hub_device_init(ddf_fun_t *hc_dev)
+{
+	virthub_init(&virtual_hub_device);
+
+	/*
+	 * We need to register the root hub.
+	 * This must be done in separate fibril because the device
+	 * we are connecting to are ourselves and we cannot connect
+	 * before leaving the add_device() function.
+	 */
+	fid_t root_hub_registration
+	    = fibril_create(hub_register_in_devman_fibril, hc_dev);
+	if (root_hub_registration == 0) {
+		usb_log_fatal("Failed to create hub registration fibril.\n");
+		return;
+	}
+
+	fibril_add_ready(root_hub_registration);
+}
+
+static int pretend_port_rest(int unused, void *unused2)
+{
+	return EOK;
+}
+
+/** Register root hub in devman.
+ *
+ * @param arg Host controller device (type <code>device_t *</code>).
+ * @return Error code.
+ */
+int hub_register_in_devman_fibril(void *arg)
+{
+	ddf_fun_t *hc_dev = (ddf_fun_t *) arg;
+
+	/*
+	 * Wait until parent device is properly initialized.
+	 */
+	int phone;
+	do {
+		phone = devman_device_connect(hc_dev->handle, 0);
+	} while (phone < 0);
+	async_hangup(phone);
+
+	int rc;
+
+	usb_hc_connection_t hc_conn;
+	rc = usb_hc_connection_initialize(&hc_conn, hc_dev->handle);
+	assert(rc == EOK);
+
+	rc = usb_hc_connection_open(&hc_conn);
+	assert(rc == EOK);
+
+	ddf_fun_t *hub_dev;
+	rc = usb_hc_new_device_wrapper(hc_dev->dev, &hc_conn,
+	    USB_SPEED_FULL,
+	    pretend_port_rest, 0, NULL,
+	    NULL, NULL, &rh_ops, hc_dev, &hub_dev);
+	if (rc != EOK) {
+		usb_log_fatal("Failed to create root hub: %s.\n",
+		    str_error(rc));
+	}
+
+	usb_hc_connection_close(&hc_conn);
+
+	usb_log_info("Created root hub function (handle %zu).\n",
+	    (size_t) hub_dev->handle);
+
+	return 0;
+}
+	
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/hub.h
===================================================================
--- uspace/drv/vhc/hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * @brief Virtual USB hub.
+ */
+#ifndef VHCD_HUB_H_
+#define VHCD_HUB_H_
+
+#include <usbvirt/device.h>
+#include <ddf/driver.h>
+
+#include "hub/hub.h"
+#include "hub/virthub.h"
+
+extern usbvirt_device_t virtual_hub_device;
+
+void virtual_hub_device_init(ddf_fun_t *);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/vhc/hub/hub.c
===================================================================
--- uspace/drv/vhc/hub/hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/hub/hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,523 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * @brief Representation of an USB hub (implementation).
+ */
+#include <usb/classes/classes.h>
+#include <usbvirt/device.h>
+#include <errno.h>
+#include <str_error.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <ddf/driver.h>
+#include <usb/debug.h>
+
+#include "hub.h"
+
+
+/** Produce a byte from bit values.
+ */
+#define MAKE_BYTE(b0, b1, b2, b3, b4, b5, b6, b7) \
+	(( \
+		((b0) << 0) \
+		| ((b1) << 1) \
+		| ((b2) << 2) \
+		| ((b3) << 3) \
+		| ((b4) << 4) \
+		| ((b5) << 5) \
+		| ((b6) << 6) \
+		| ((b7) << 7) \
+	))
+
+/* Static functions. */
+static hub_port_t *get_hub_port(hub_t *, size_t);
+static void set_port_status_change(hub_port_t *, hub_status_change_t);
+static void clear_port_status_change(hub_port_t *, uint16_t);
+static int set_port_state_delayed_fibril(void *);
+static void set_port_state_delayed(hub_t *, size_t, suseconds_t,
+    hub_port_state_t, hub_port_state_t);
+
+/** Convert hub port state to a char. */
+char hub_port_state_to_char(hub_port_state_t state) {
+	switch (state) {
+		case HUB_PORT_STATE_NOT_CONFIGURED:
+			return '-';
+		case HUB_PORT_STATE_POWERED_OFF:
+			return 'O';
+		case HUB_PORT_STATE_DISCONNECTED:
+			return 'X';
+		case HUB_PORT_STATE_DISABLED:
+			return 'D';
+		case HUB_PORT_STATE_RESETTING:
+			return 'R';
+		case HUB_PORT_STATE_ENABLED:
+			return 'E';
+		case HUB_PORT_STATE_SUSPENDED:
+			return 'S';
+		case HUB_PORT_STATE_RESUMING:
+			return 'F';
+		default:
+			return '?';
+	}
+}
+
+/** Initialize single hub port.
+ *
+ * @param port Port to be initialized.
+ * @param index Port index (one based).
+ */
+static void hub_init_port(hub_port_t *port, hub_t *hub, size_t index)
+{
+	port->connected_device = NULL;
+	port->index = index;
+	port->state = HUB_PORT_STATE_NOT_CONFIGURED;
+	port->status_change = 0;
+	port->hub = hub;
+}
+
+/** Initialize the hub.
+ *
+ * @param hub Hub to be initialized.
+ */
+void hub_init(hub_t *hub)
+{
+	size_t i;
+	for (i = 0; i < HUB_PORT_COUNT; i++) {
+		hub_init_port(&hub->ports[i], hub, i + 1);
+	}
+	hub->custom_data = NULL;
+	hub->signal_changes = true;
+	fibril_mutex_initialize(&hub->guard);
+}
+
+/** Connect a device to the hub.
+ *
+ * @param hub Hub to connect device to.
+ * @param device Device to be connected.
+ * @return Index of port the device was connected to.
+ * @retval -1 No free port available.
+ */
+size_t hub_connect_device(hub_t *hub, void *device)
+{
+	size_t i;
+	for (i = 0; i < HUB_PORT_COUNT; i++) {
+		hub_port_t *port = &hub->ports[i];
+
+		if (port->connected_device != NULL) {
+			continue;
+		}
+
+		port->connected_device = device;
+
+		/*
+		 * TODO:
+		 * If the hub was configured, we can normally
+		 * announce the plug-in.
+		 * Otherwise, we will wait until hub is configured
+		 * and announce changes in single burst.
+		 */
+		//if (port->state == HUB_PORT_STATE_DISCONNECTED) {
+			port->state = HUB_PORT_STATE_DISABLED;
+			set_port_status_change(port, HUB_STATUS_C_PORT_CONNECTION);
+		//}
+
+		return i;
+	}
+
+	return (size_t) -1;
+}
+
+/** Disconnects a device from a hub.
+ *
+ * @param hub Hub the device was connected to.
+ * @param device Device to be disconnected.
+ * @return Error code.
+ */
+int hub_disconnect_device(hub_t *hub, void *device)
+{
+	size_t index = hub_find_device(hub, device);
+	if (index == (size_t) -1) {
+		return ENOENT;
+	}
+
+	hub_port_t *port = &hub->ports[index];
+
+	port->connected_device = NULL;
+	port->state = HUB_PORT_STATE_DISCONNECTED;
+	set_port_status_change(port, HUB_STATUS_C_PORT_CONNECTION);
+
+	return EOK;
+}
+
+/** Find port device is connected to.
+ *
+ * @param hub Hub in question.
+ * @param device Device in question.
+ * @return Port index (zero based).
+ * @retval -1 Device is not connected.
+ */
+size_t hub_find_device(hub_t *hub, void *device)
+{
+	size_t i;
+	for (i = 0; i < HUB_PORT_COUNT; i++) {
+		hub_port_t *port = &hub->ports[i];
+
+		if (port->connected_device == device) {
+			return i;
+		}
+	}
+
+	return -1;
+}
+
+/** Acquire exclusive access to the hub.
+ *
+ * @param hub Hub in question.
+ */
+void hub_acquire(hub_t *hub)
+{
+	fibril_mutex_lock(&hub->guard);
+}
+
+/** Give up exclusive access to the hub.
+ *
+ * @param hub Hub in question.
+ */
+void hub_release(hub_t *hub)
+{
+	fibril_mutex_unlock(&hub->guard);
+}
+
+/** Change port state.
+ *
+ * @param hub Hub the port belongs to.
+ * @param port_index Port index (zero based).
+ * @param state New port state.
+ */
+void hub_set_port_state(hub_t *hub, size_t port_index, hub_port_state_t state)
+{
+	hub_port_t *port = get_hub_port(hub, port_index);
+	if (port == NULL) {
+		return;
+	}
+
+	usb_log_debug("Setting port %zu to state %d.\n", port_index, state);
+
+	switch (state) {
+		case HUB_PORT_STATE_POWERED_OFF:
+			clear_port_status_change(port, HUB_STATUS_C_PORT_CONNECTION);
+			clear_port_status_change(port, HUB_STATUS_C_PORT_ENABLE);
+			clear_port_status_change(port, HUB_STATUS_C_PORT_RESET);
+			break;
+		case HUB_PORT_STATE_RESUMING:
+			port->state = state;
+			set_port_state_delayed(hub, port_index,
+			    10, state, HUB_PORT_STATE_ENABLED);
+			break;
+		case HUB_PORT_STATE_RESETTING:
+			port->state = state;
+			set_port_state_delayed(hub, port_index,
+			    10, state, HUB_PORT_STATE_ENABLED);
+			break;
+		case HUB_PORT_STATE_ENABLED:
+			if (port->state == HUB_PORT_STATE_RESETTING) {
+				set_port_status_change(port, HUB_STATUS_C_PORT_RESET);
+			}
+			break;
+		default:
+			break;
+	}
+
+	port->state = state;
+}
+
+/** Change state of all ports.
+ *
+ * @param hub Hub in question.
+ * @param state New state for all ports.
+ */
+void hub_set_port_state_all(hub_t *hub, hub_port_state_t state)
+{
+	size_t i;
+	for (i = 0; i < HUB_PORT_COUNT; i++) {
+		hub_set_port_state(hub, i, state);
+	}
+}
+
+/** Get port state.
+ *
+ * @param hub Hub the port belongs to.
+ * @param port_index Port index (zero based).
+ * @return Port state.
+ */
+hub_port_state_t hub_get_port_state(hub_t *hub, size_t port_index)
+{
+	hub_port_t *port = get_hub_port(hub, port_index);
+	if (port == NULL) {
+		return HUB_PORT_STATE_UNKNOWN;
+	}
+
+	return port->state;
+}
+
+/** Clear port status change bit.
+ *
+ * @param hub Hub the port belongs to.
+ * @param port_index Port index (zero based).
+ * @param change Change to be cleared.
+ */
+void hub_clear_port_status_change(hub_t *hub, size_t port_index,
+    hub_status_change_t change)
+{
+	hub_port_t *port = get_hub_port(hub, port_index);
+	if (port == NULL) {
+		return;
+	}
+
+	clear_port_status_change(port, change);
+}
+
+/** Get port status change bits.
+ *
+ * @param hub Hub the port belongs to.
+ * @param port_index Port index (zero based).
+ * @return Port status change bitmap in standard format.
+ */
+uint16_t hub_get_port_status_change(hub_t *hub, size_t port_index)
+{
+	hub_port_t *port = get_hub_port(hub, port_index);
+	if (port == NULL) {
+		return 0;
+	}
+
+	return port->status_change;
+}
+
+/** Get port status bits.
+ *
+ * @param hub Hub the port belongs to.
+ * @param port_index Port index (zero based).
+ * @return Port status bitmap in standard format.
+ */
+uint32_t hub_get_port_status(hub_t *hub, size_t port_index)
+{
+	hub_port_t *port = get_hub_port(hub, port_index);
+	if (port == NULL) {
+		return 0;
+	}
+
+	uint32_t status;
+	status = MAKE_BYTE(
+	    /* Current connect status. */
+	    port->connected_device == NULL ? 0 : 1,
+	    /* Port enabled/disabled. */
+	    port->state == HUB_PORT_STATE_ENABLED ? 1 : 0,
+	    /* Suspend. */
+	    (port->state == HUB_PORT_STATE_SUSPENDED)
+		|| (port->state == HUB_PORT_STATE_RESUMING) ? 1 : 0,
+	    /* Over-current. */
+	    0,
+	    /* Reset. */
+	    port->state == HUB_PORT_STATE_RESETTING ? 1 : 0,
+	    /* Reserved. */
+	    0, 0, 0)
+
+	    | (MAKE_BYTE(
+	    /* Port power. */
+	    port->state == HUB_PORT_STATE_POWERED_OFF ? 0 : 1,
+	    /* Full-speed device. */
+	    0,
+	    /* Reserved. */
+	    0, 0, 0, 0, 0, 0
+	    )) << 8;
+
+	status |= (port->status_change << 16);
+
+	return status;
+}
+
+/** Create hub status change bitmap.
+ *
+ * @warning This function assumes that the whole bitmap fits into 8 bits.
+ *
+ * @param hub Hub in question.
+ * @return Hub status change bitmap.
+ */
+uint8_t hub_get_status_change_bitmap(hub_t *hub)
+{
+	uint8_t change_map = 0;
+
+	size_t i;
+	for (i = 0; i < HUB_PORT_COUNT; i++) {
+		hub_port_t *port = &hub->ports[i];
+
+		if (port->status_change != 0) {
+			change_map |= (1 << port->index);
+		}
+	}
+
+	return change_map;
+}
+
+
+/*
+ *
+ * STATIC (HELPER) FUNCTIONS
+ *
+ */
+
+/** Find a port in a hub.
+ *
+ * @param hub Hub in question.
+ * @param port Port index (zero based).
+ * @return Port structure.
+ * @retval NULL Invalid port index.
+ */
+static hub_port_t *get_hub_port(hub_t *hub, size_t port)
+{
+	if (port >= HUB_PORT_COUNT) {
+		return NULL;
+	}
+
+	return &hub->ports[port];
+}
+
+/** Adds a port status change to a port.
+ *
+ * @param port The port with status change.
+ * @param change Change to be added to the status.
+ */
+static void set_port_status_change(hub_port_t *port,
+    hub_status_change_t change)
+{
+	assert(port != NULL);
+	uint16_t old_value = port->status_change;
+	port->status_change |= change;
+	usb_log_debug("Changing status change on %zu: %04x => %04x\n",
+	    port->index,
+	    (unsigned int) old_value, (unsigned int) port->status_change);
+	port->hub->signal_changes = true;
+}
+
+/** Clears a port status change on a port.
+ *
+ * @param port The port with status change.
+ * @param change Change to be removed from the status.
+ */
+static void clear_port_status_change(hub_port_t *port,
+    uint16_t change)
+{
+	assert(port != NULL);
+	port->status_change &= (~change);
+	port->hub->signal_changes = true;
+}
+
+/** Structure for automatic (delayed) port state change. */
+struct delay_port_state_change {
+	/** Delay in microseconds. */
+	suseconds_t delay;
+	/** Old state of the port. */
+	hub_port_state_t old_state;
+	/** New state of the port. */
+	hub_port_state_t new_state;
+	/** Port index (zero based). */
+	size_t port;
+	/** Hub. */
+	hub_t *hub;
+};
+
+/** Fibril responsible for delayed port state change.
+ *
+ * @param arg Pointer to delay_port_state_change.
+ * @return Always EOK.
+ */
+static int set_port_state_delayed_fibril(void *arg)
+{
+	struct delay_port_state_change *change
+	    = (struct delay_port_state_change *) arg;
+
+	async_usleep(change->delay);
+
+	hub_acquire(change->hub);
+
+	hub_port_t *port = get_hub_port(change->hub, change->port);
+	assert(port != NULL);
+
+	if (port->state == change->old_state) {
+		hub_set_port_state(change->hub, change->port,
+		    change->new_state);
+	}
+
+	hub_release(change->hub);
+
+	free(change);
+
+	return EOK;
+}
+
+/** Change port state with a delay.
+ *
+ * @warning If the port state changes during the waiting phase, the state
+ * is not changed.
+ *
+ * @param hub Hub in question.
+ * @param port_index Port index (zero based).
+ * @param delay_time_ms Delay time in miliseconds.
+ * @param old_state Old (current) state of the port.
+ * @param new_state New state of the port.
+ */
+static void set_port_state_delayed(hub_t *hub, size_t port_index,
+    suseconds_t delay_time_ms,
+    hub_port_state_t old_state, hub_port_state_t new_state)
+{
+	struct delay_port_state_change *change
+	    = malloc(sizeof(struct delay_port_state_change));
+
+	change->hub = hub;
+	change->port = port_index;
+	change->delay = delay_time_ms * 1000;
+	change->old_state = old_state;
+	change->new_state = new_state;
+	fid_t fibril = fibril_create(set_port_state_delayed_fibril, change);
+	if (fibril == 0) {
+		printf("Failed to create fibril\n");
+		free(change);
+		return;
+	}
+	fibril_add_ready(fibril);
+}
+
+
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/hub/hub.h
===================================================================
--- uspace/drv/vhc/hub/hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/hub/hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * @brief Representation of an USB hub.
+ */
+#ifndef VHC_HUB_HUB_H_
+#define VHC_HUB_HUB_H_
+
+#include <fibril_synch.h>
+
+#ifndef HUB_PORT_COUNT
+#define HUB_PORT_COUNT 2
+#endif
+#define BITS2BYTES(bits) (bits ? ((((bits)-1)>>3)+1) : 0)
+
+/** Hub port internal state.
+ * Some states (e.g. port over current) are not covered as they are not
+ * simulated at all.
+ */
+typedef enum {
+	HUB_PORT_STATE_UNKNOWN,
+	HUB_PORT_STATE_NOT_CONFIGURED,
+	HUB_PORT_STATE_POWERED_OFF,
+	HUB_PORT_STATE_DISCONNECTED,
+	HUB_PORT_STATE_DISABLED,
+	HUB_PORT_STATE_RESETTING,
+	HUB_PORT_STATE_ENABLED,
+	HUB_PORT_STATE_SUSPENDED,
+	HUB_PORT_STATE_RESUMING,
+	/* HUB_PORT_STATE_, */
+} hub_port_state_t;
+
+char hub_port_state_to_char(hub_port_state_t);
+
+/** Hub status change mask bits. */
+typedef enum {
+	HUB_STATUS_C_PORT_CONNECTION = (1 << 0),
+	HUB_STATUS_C_PORT_ENABLE = (1 << 1),
+	HUB_STATUS_C_PORT_SUSPEND = (1 << 2),
+	HUB_STATUS_C_PORT_OVER_CURRENT = (1 << 3),
+	HUB_STATUS_C_PORT_RESET = (1 << 4),
+	/* HUB_STATUS_C_ = (1 << ), */
+} hub_status_change_t;
+
+typedef struct hub hub_t;
+
+/** Hub port information. */
+typedef struct {
+	/** Custom pointer to connected device. */
+	void *connected_device;
+	/** Port index (one based). */
+	size_t index;
+	/** Port state. */
+	hub_port_state_t state;
+	/** Status change bitmap. */
+	uint16_t status_change;
+	/** Containing hub. */
+	hub_t *hub;
+} hub_port_t;
+
+/** Hub device type. */
+struct hub {
+	/** Hub ports. */
+	hub_port_t ports[HUB_PORT_COUNT];
+	/** Custom hub data. */
+	void *custom_data;
+	/** Access guard to the whole hub. */
+	fibril_mutex_t guard;
+	/** Last value of status change bitmap. */
+	bool signal_changes;
+};
+
+void hub_init(hub_t *);
+size_t hub_connect_device(hub_t *, void *);
+int hub_disconnect_device(hub_t *, void *);
+size_t hub_find_device(hub_t *, void *);
+void hub_acquire(hub_t *);
+void hub_release(hub_t *);
+void hub_set_port_state(hub_t *, size_t, hub_port_state_t);
+void hub_set_port_state_all(hub_t *, hub_port_state_t);
+hub_port_state_t hub_get_port_state(hub_t *, size_t);
+void hub_clear_port_status_change(hub_t *, size_t, hub_status_change_t);
+uint16_t hub_get_port_status_change(hub_t *, size_t);
+uint32_t hub_get_port_status(hub_t *, size_t);
+uint8_t hub_get_status_change_bitmap(hub_t *);
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/vhc/hub/virthub.c
===================================================================
--- uspace/drv/vhc/hub/virthub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/hub/virthub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,260 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * @brief
+ */
+#include <usb/classes/classes.h>
+#include <usbvirt/device.h>
+#include <assert.h>
+#include <errno.h>
+#include <str_error.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <ddf/driver.h>
+
+#include "virthub.h"
+#include "hub.h"
+
+
+/** Standard device descriptor. */
+usb_standard_device_descriptor_t std_device_descriptor = {
+	.length = sizeof(usb_standard_device_descriptor_t),
+	.descriptor_type = USB_DESCTYPE_DEVICE,
+	.usb_spec_version = 0x110,
+	.device_class = USB_CLASS_HUB,
+	.device_subclass = 0,
+	.device_protocol = 0,
+	.max_packet_size = 64,
+	.configuration_count = 1
+};
+
+/** Standard interface descriptor. */
+usb_standard_interface_descriptor_t std_interface_descriptor = {
+	.length = sizeof(usb_standard_interface_descriptor_t),
+	.descriptor_type = USB_DESCTYPE_INTERFACE,
+	.interface_number = 0,
+	.alternate_setting = 0,
+	.endpoint_count = 1,
+	.interface_class = USB_CLASS_HUB,
+	.interface_subclass = 0,
+	.interface_protocol = 0,
+	.str_interface = 0
+};
+
+/** Hub descriptor. */
+hub_descriptor_t hub_descriptor = {
+	.length = sizeof(hub_descriptor_t),
+	.type = USB_DESCTYPE_HUB,
+	.port_count = HUB_PORT_COUNT,
+	.characteristics = 0, 
+	.power_on_warm_up = 50, /* Huh? */
+	.max_current = 100, /* Huh again. */
+	.removable_device = { 0 },
+	.port_power = { 0xFF }
+};
+
+/** Endpoint descriptor. */
+usb_standard_endpoint_descriptor_t endpoint_descriptor = {
+	.length = sizeof(usb_standard_endpoint_descriptor_t),
+	.descriptor_type = USB_DESCTYPE_ENDPOINT,
+	.endpoint_address = HUB_STATUS_CHANGE_PIPE | 128,
+	.attributes = USB_TRANSFER_INTERRUPT,
+	.max_packet_size = 8,
+	.poll_interval = 0xFF
+};
+
+/** Standard configuration descriptor. */
+usb_standard_configuration_descriptor_t std_configuration_descriptor = {
+	.length = sizeof(usb_standard_configuration_descriptor_t),
+	.descriptor_type = USB_DESCTYPE_CONFIGURATION,
+	.total_length = 
+		sizeof(usb_standard_configuration_descriptor_t)
+		+ sizeof(std_interface_descriptor)
+		+ sizeof(hub_descriptor)
+		+ sizeof(endpoint_descriptor)
+		,
+	.interface_count = 1,
+	.configuration_number = HUB_CONFIGURATION_ID,
+	.str_configuration = 0,
+	.attributes = 128, /* denotes bus-powered device */
+	.max_power = 50
+};
+
+/** All hub configuration descriptors. */
+static usbvirt_device_configuration_extras_t extra_descriptors[] = {
+	{
+		.data = (uint8_t *) &std_interface_descriptor,
+		.length = sizeof(std_interface_descriptor)
+	},
+	{
+		.data = (uint8_t *) &hub_descriptor,
+		.length = sizeof(hub_descriptor)
+	},
+	{
+		.data = (uint8_t *) &endpoint_descriptor,
+		.length = sizeof(endpoint_descriptor)
+	}
+};
+
+/** Hub configuration. */
+usbvirt_device_configuration_t configuration = {
+	.descriptor = &std_configuration_descriptor,
+	.extra = extra_descriptors,
+	.extra_count = sizeof(extra_descriptors)/sizeof(extra_descriptors[0])
+};
+
+/** Hub standard descriptors. */
+usbvirt_descriptors_t descriptors = {
+	.device = &std_device_descriptor,
+	.configuration = &configuration,
+	.configuration_count = 1,
+};
+
+/** Initializes virtual hub device.
+ *
+ * @param dev Virtual USB device backend.
+ * @return Error code.
+ */
+int virthub_init(usbvirt_device_t *dev)
+{
+	if (dev == NULL) {
+		return EBADMEM;
+	}
+	dev->ops = &hub_ops;
+	dev->descriptors = &descriptors;
+
+	hub_t *hub = malloc(sizeof(hub_t));
+	if (hub == NULL) {
+		return ENOMEM;
+	}
+
+	hub_init(hub);
+	dev->device_data = hub;
+
+	return EOK;
+}
+
+/** Connect a device to a virtual hub.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param conn Device to be connected.
+ * @return Port device was connected to.
+ */
+int virthub_connect_device(usbvirt_device_t *dev, vhc_virtdev_t *conn)
+{
+	assert(dev != NULL);
+	assert(conn != NULL);
+
+	hub_t *hub = (hub_t *) dev->device_data;
+
+	hub_acquire(hub);
+	size_t port = hub_connect_device(hub, conn);
+	hub_release(hub);
+
+	return port;
+}
+
+/** Disconnect a device from a virtual hub.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param conn Device to be disconnected.
+ * @return Error code.
+ */
+int virthub_disconnect_device(usbvirt_device_t *dev, vhc_virtdev_t *conn)
+{
+	assert(dev != NULL);
+	assert(conn != NULL);
+
+	hub_t *hub = (hub_t *) dev->device_data;
+
+	hub_acquire(hub);
+	hub_disconnect_device(hub, conn);
+	hub_release(hub);
+
+	return EOK;
+}
+
+/** Whether trafic is propagated to given device.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param conn Connected device.
+ * @return Whether port is signalling to the device.
+ */
+bool virthub_is_device_enabled(usbvirt_device_t *dev, vhc_virtdev_t *conn)
+{
+	assert(dev != NULL);
+	assert(conn != NULL);
+
+	hub_t *hub = (hub_t *) dev->device_data;
+
+	hub_acquire(hub);
+
+	hub_port_state_t state = HUB_PORT_STATE_UNKNOWN;
+	size_t port = hub_find_device(hub, conn);
+	if (port != (size_t) -1) {
+		state = hub_get_port_state(hub, port);
+	}
+	hub_release(hub);
+
+	return state == HUB_PORT_STATE_ENABLED;
+}
+
+/** Format status of a virtual hub.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param[out] status Hub status information.
+ * @param[in] len Size of the @p status buffer.
+ */
+void virthub_get_status(usbvirt_device_t *dev, char *status, size_t len)
+{
+	assert(dev != NULL);
+	if (len == 0) {
+		return;
+	}
+
+	hub_t *hub = (hub_t *) dev->device_data;
+
+	char port_status[HUB_PORT_COUNT + 1];
+
+	size_t i;
+	for (i = 0; i < HUB_PORT_COUNT; i++) {
+		port_status[i] = hub_port_state_to_char(
+		    hub_get_port_state(hub, i));
+	}
+	port_status[HUB_PORT_COUNT] = 0;
+
+	snprintf(status, len, "vhub:%s", port_status);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/hub/virthub.h
===================================================================
--- uspace/drv/vhc/hub/virthub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/hub/virthub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * @brief USB hub as a virtual USB device.
+ */
+#ifndef VHC_HUB_VIRTHUB_H_
+#define VHC_HUB_VIRTHUB_H_
+
+#include <usbvirt/device.h>
+#include "hub.h"
+
+#ifdef STANDALONE_HUB
+#define virtdev_connection_t int
+#else
+#include "../vhcd.h"
+#endif
+
+/** Endpoint number for status change pipe. */
+#define HUB_STATUS_CHANGE_PIPE 1
+/** Configuration value for hub configuration. */
+#define HUB_CONFIGURATION_ID 1
+
+
+/** Hub descriptor.
+ */
+typedef struct {
+	/** Size of this descriptor in bytes. */
+	uint8_t length;
+	/** Descriptor type (USB_DESCTYPE_HUB). */
+	uint8_t type;
+	/** Number of downstream ports. */
+	uint8_t port_count;
+	/** Hub characteristics. */
+	uint16_t characteristics;
+	/** Time from power-on to stabilized current.
+	 * Expressed in 2ms unit.
+	 */
+	uint8_t power_on_warm_up;
+	/** Maximum current (in mA). */
+	uint8_t max_current;
+	/** Whether device at given port is removable. */
+	uint8_t removable_device[BITS2BYTES(HUB_PORT_COUNT+1)];
+	/** Port power control.
+	 * This is USB1.0 compatibility field, all bits must be 1.
+	 */
+	uint8_t port_power[BITS2BYTES(HUB_PORT_COUNT+1)];
+} __attribute__ ((packed)) hub_descriptor_t;
+
+extern usbvirt_device_ops_t hub_ops;
+extern hub_descriptor_t hub_descriptor;
+
+int virthub_init(usbvirt_device_t *);
+int virthub_connect_device(usbvirt_device_t *, vhc_virtdev_t *);
+int virthub_disconnect_device(usbvirt_device_t *, vhc_virtdev_t *);
+bool virthub_is_device_enabled(usbvirt_device_t *, vhc_virtdev_t *);
+void virthub_get_status(usbvirt_device_t *, char *, size_t);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/vhc/hub/virthubops.c
===================================================================
--- uspace/drv/vhc/hub/virthubops.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/hub/virthubops.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,457 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * @brief Virtual USB hub operations.
+ */
+#include <errno.h>
+#include <usb/classes/hub.h>
+#include <usbvirt/device.h>
+#include "virthub.h"
+#include "hub.h"
+
+/** Callback when device changes states. */
+static void on_state_change(usbvirt_device_t *dev,
+    usbvirt_device_state_t old_state, usbvirt_device_state_t new_state)
+{
+	hub_t *hub = (hub_t *)dev->device_data;
+
+	hub_acquire(hub);
+
+	switch (new_state) {
+		case USBVIRT_STATE_CONFIGURED:
+			hub_set_port_state_all(hub, HUB_PORT_STATE_POWERED_OFF);
+			break;
+		case USBVIRT_STATE_ADDRESS:
+			hub_set_port_state_all(hub, HUB_PORT_STATE_NOT_CONFIGURED);
+			break;
+		default:
+			break;
+	}
+
+	hub_release(hub);
+}
+
+/** Callback for data request. */
+static int req_on_status_change_pipe(usbvirt_device_t *dev,
+    usb_endpoint_t endpoint, usb_transfer_type_t tr_type,
+    void *buffer, size_t buffer_size, size_t *actual_size)
+{
+	if (endpoint != HUB_STATUS_CHANGE_PIPE) {
+		return ESTALL;
+	}
+	if (tr_type != USB_TRANSFER_INTERRUPT) {
+		return ESTALL;
+	}
+	
+	hub_t *hub = dev->device_data;
+
+	hub_acquire(hub);
+
+	if (!hub->signal_changes) {
+		hub_release(hub);
+
+		return ENAK;
+	}
+
+
+	uint8_t change_map = hub_get_status_change_bitmap(hub);
+
+	uint8_t *b = (uint8_t *) buffer;
+	if (buffer_size > 0) {
+		*b = change_map;
+		*actual_size = 1;
+	} else {
+		*actual_size = 0;
+	}
+	
+	hub->signal_changes = false;
+
+	hub_release(hub);
+
+	return EOK;
+}
+
+/** Handle ClearHubFeature request.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param request The SETUP packet of the control request.
+ * @param data Extra data (when DATA stage present).
+ * @return Error code.
+ */
+static int req_clear_hub_feature(usbvirt_device_t *dev,
+    const usb_device_request_setup_packet_t *request, uint8_t *data,
+    size_t *act_size)
+{
+	return ENOTSUP;
+}
+
+/** Handle ClearPortFeature request.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param request The SETUP packet of the control request.
+ * @param data Extra data (when DATA stage present).
+ * @return Error code.
+ */
+static int req_clear_port_feature(usbvirt_device_t *dev,
+    const usb_device_request_setup_packet_t *request, uint8_t *data,
+    size_t *act_size)
+{
+	int rc;
+	size_t port = request->index - 1;
+	usb_hub_class_feature_t feature = request->value;
+	hub_t *hub = (hub_t *) dev->device_data;
+
+	hub_acquire(hub);
+
+	hub_port_state_t port_state = hub_get_port_state(hub, port);
+
+	switch (feature) {
+		case USB_HUB_FEATURE_PORT_ENABLE:
+			if ((port_state != HUB_PORT_STATE_NOT_CONFIGURED)
+			    && (port_state != HUB_PORT_STATE_POWERED_OFF)) {
+				hub_set_port_state(hub, port, HUB_PORT_STATE_DISABLED);
+			}
+			rc = EOK;
+			break;
+
+		case USB_HUB_FEATURE_PORT_SUSPEND:
+			if (port_state != HUB_PORT_STATE_SUSPENDED) {
+				rc = EOK;
+				break;
+			}
+			hub_set_port_state(hub, port, HUB_PORT_STATE_RESUMING);
+			rc = EOK;
+			break;
+
+		case USB_HUB_FEATURE_PORT_POWER:
+			if (port_state != HUB_PORT_STATE_NOT_CONFIGURED) {
+				hub_set_port_state(hub, port, HUB_PORT_STATE_POWERED_OFF);
+			}
+			rc = EOK;
+			break;
+
+		case USB_HUB_FEATURE_C_PORT_CONNECTION:
+			hub_clear_port_status_change(hub, port, HUB_STATUS_C_PORT_CONNECTION);
+			rc = EOK;
+			break;
+
+		case USB_HUB_FEATURE_C_PORT_ENABLE:
+			hub_clear_port_status_change(hub, port, HUB_STATUS_C_PORT_ENABLE);
+			rc = EOK;
+			break;
+
+		case USB_HUB_FEATURE_C_PORT_SUSPEND:
+			hub_clear_port_status_change(hub, port, HUB_STATUS_C_PORT_SUSPEND);
+			rc = EOK;
+			break;
+
+		case USB_HUB_FEATURE_C_PORT_OVER_CURRENT:
+			hub_clear_port_status_change(hub, port, HUB_STATUS_C_PORT_OVER_CURRENT);
+			rc = EOK;
+			break;
+
+		case USB_HUB_FEATURE_C_PORT_RESET:
+			hub_clear_port_status_change(hub, port, HUB_STATUS_C_PORT_RESET);
+			rc = EOK;
+			break;
+
+		default:
+			rc = ENOTSUP;
+			break;
+	}
+
+	hub_release(hub);
+
+	return rc;
+}
+
+/** Handle GetBusState request.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param request The SETUP packet of the control request.
+ * @param data Extra data (when DATA stage present).
+ * @return Error code.
+ */
+static int req_get_bus_state(usbvirt_device_t *dev,
+    const usb_device_request_setup_packet_t *request, uint8_t *data,
+    size_t *act_size)
+{
+	return ENOTSUP;
+}
+
+/** Handle GetDescriptor request.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param request The SETUP packet of the control request.
+ * @param data Extra data (when DATA stage present).
+ * @return Error code.
+ */
+static int req_get_descriptor(usbvirt_device_t *dev,
+    const usb_device_request_setup_packet_t *request, uint8_t *data,
+    size_t *act_size)
+{
+	if (request->value_high == USB_DESCTYPE_HUB) {
+		usbvirt_control_reply_helper(request, data, act_size,
+		    &hub_descriptor, hub_descriptor.length);
+
+		return EOK;
+	}
+	/* Let the framework handle all the rest. */
+	return EFORWARD;
+}
+
+/** Handle GetHubStatus request.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param request The SETUP packet of the control request.
+ * @param data Extra data (when DATA stage present).
+ * @return Error code.
+ */
+static int req_get_hub_status(usbvirt_device_t *dev,
+    const usb_device_request_setup_packet_t *request, uint8_t *data,
+    size_t *act_size)
+{
+	uint32_t hub_status = 0;
+
+	usbvirt_control_reply_helper(request, data, act_size,
+	    &hub_status, sizeof(hub_status));
+
+	return EOK;
+}
+
+/** Handle GetPortStatus request.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param request The SETUP packet of the control request.
+ * @param data Extra data (when DATA stage present).
+ * @return Error code.
+ */
+static int req_get_port_status(usbvirt_device_t *dev,
+    const usb_device_request_setup_packet_t *request, uint8_t *data,
+    size_t *act_size)
+{
+	hub_t *hub = (hub_t *) dev->device_data;
+
+	hub_acquire(hub);
+
+	uint32_t status = hub_get_port_status(hub, request->index - 1);
+
+	hub_release(hub);
+
+	usbvirt_control_reply_helper(request, data, act_size,
+	    &status, sizeof(status));
+
+	return EOK;
+}
+
+/** Handle SetHubFeature request.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param request The SETUP packet of the control request.
+ * @param data Extra data (when DATA stage present).
+ * @return Error code.
+ */
+static int req_set_hub_feature(usbvirt_device_t *dev,
+    const usb_device_request_setup_packet_t *request, uint8_t *data,
+    size_t *act_size)
+{
+	return ENOTSUP;
+}
+
+/** Handle SetPortFeature request.
+ *
+ * @param dev Virtual device representing the hub.
+ * @param request The SETUP packet of the control request.
+ * @param data Extra data (when DATA stage present).
+ * @return Error code.
+ */
+static int req_set_port_feature(usbvirt_device_t *dev,
+    const usb_device_request_setup_packet_t *request, uint8_t *data,
+    size_t *act_size)
+{
+	int rc;
+	size_t port = request->index - 1;
+	usb_hub_class_feature_t feature = request->value;
+	hub_t *hub = (hub_t *) dev->device_data;
+
+	hub_acquire(hub);
+
+	hub_port_state_t port_state = hub_get_port_state(hub, port);
+
+	switch (feature) {
+		case USB_HUB_FEATURE_PORT_RESET:
+			if (port_state != HUB_PORT_STATE_POWERED_OFF) {
+				hub_set_port_state(hub, port, HUB_PORT_STATE_RESETTING);
+			}
+			rc = EOK;
+			break;
+
+		case USB_HUB_FEATURE_PORT_SUSPEND:
+			if (port_state == HUB_PORT_STATE_ENABLED) {
+				hub_set_port_state(hub, port, HUB_PORT_STATE_SUSPENDED);
+			}
+			rc = EOK;
+			break;
+
+		case USB_HUB_FEATURE_PORT_POWER:
+			if (port_state == HUB_PORT_STATE_POWERED_OFF) {
+				hub_set_port_state(hub, port, HUB_PORT_STATE_DISCONNECTED);
+			}
+			rc = EOK;
+			break;
+
+		default:
+			break;
+	}
+
+	hub_release(hub);
+
+	return rc;
+}
+
+
+/** IN class request. */
+#define CLASS_REQ_IN(recipient) \
+	USBVIRT_MAKE_CONTROL_REQUEST_TYPE(USB_DIRECTION_IN, \
+	USBVIRT_REQUEST_TYPE_CLASS, recipient)
+/** OUT class request. */
+#define CLASS_REQ_OUT(recipient) \
+	USBVIRT_MAKE_CONTROL_REQUEST_TYPE(USB_DIRECTION_OUT, \
+	USBVIRT_REQUEST_TYPE_CLASS, recipient)
+
+/** Recipient: other. */
+#define REC_OTHER USB_REQUEST_RECIPIENT_OTHER
+/** Recipient: device. */
+#define REC_DEVICE USB_REQUEST_RECIPIENT_DEVICE
+/** Direction: in. */
+#define DIR_IN USB_DIRECTION_IN
+/** Direction: out. */
+#define DIR_OUT USB_DIRECTION_OUT
+
+
+/** Create a class request.
+ *
+ * @param direction Request direction.
+ * @param recipient Request recipient.
+ * @param req Request code.
+ */
+#define CLASS_REQ(direction, recipient, req) \
+	.req_direction = direction, \
+	.req_recipient = recipient, \
+	.req_type = USB_REQUEST_TYPE_CLASS, \
+	.request = req
+
+/** Create a standard request.
+ *
+ * @param direction Request direction.
+ * @param recipient Request recipient.
+ * @param req Request code.
+ */
+#define STD_REQ(direction, recipient, req) \
+	.req_direction = direction, \
+	.req_recipient = recipient, \
+	.req_type = USB_REQUEST_TYPE_STANDARD, \
+	.request = req
+
+/** Hub operations on control endpoint zero. */
+static usbvirt_control_request_handler_t endpoint_zero_handlers[] = {
+	{
+		STD_REQ(DIR_IN, REC_DEVICE, USB_DEVREQ_GET_DESCRIPTOR),
+		.name = "GetDescriptor",
+		.callback = req_get_descriptor
+	},
+	{
+		CLASS_REQ(DIR_IN, REC_DEVICE, USB_DEVREQ_GET_DESCRIPTOR),
+		.name = "GetDescriptor",
+		.callback = req_get_descriptor
+	},
+	{
+		CLASS_REQ(DIR_IN, REC_OTHER, USB_HUB_REQUEST_GET_STATUS),
+		.name = "GetPortStatus",
+		.callback = req_get_port_status
+	},
+	{
+		CLASS_REQ(DIR_OUT, REC_DEVICE, USB_HUB_REQUEST_CLEAR_FEATURE),
+		.name = "ClearHubFeature",
+		.callback = req_clear_hub_feature
+	},
+	{
+		CLASS_REQ(DIR_OUT, REC_OTHER, USB_HUB_REQUEST_CLEAR_FEATURE),
+		.name = "ClearPortFeature",
+		.callback = req_clear_port_feature
+	},
+	{
+		CLASS_REQ(DIR_IN, REC_OTHER, USB_HUB_REQUEST_GET_STATE),
+		.name = "GetBusState",
+		.callback = req_get_bus_state
+	},
+	{
+		CLASS_REQ(DIR_IN, REC_DEVICE, USB_HUB_REQUEST_GET_DESCRIPTOR),
+		.name = "GetHubDescriptor",
+		.callback = req_get_descriptor
+	},
+	{
+		CLASS_REQ(DIR_IN, REC_DEVICE, USB_HUB_REQUEST_GET_STATUS),
+		.name = "GetHubStatus",
+		.callback = req_get_hub_status
+	},
+	{
+		CLASS_REQ(DIR_IN, REC_OTHER, USB_HUB_REQUEST_GET_STATUS),
+		.name = "GetPortStatus",
+		.callback = req_get_port_status
+	},
+	{
+		CLASS_REQ(DIR_OUT, REC_DEVICE, USB_HUB_REQUEST_SET_FEATURE),
+		.name = "SetHubFeature",
+		.callback = req_set_hub_feature
+	},
+	{
+		CLASS_REQ(DIR_OUT, REC_OTHER, USB_HUB_REQUEST_SET_FEATURE),
+		.name = "SetPortFeature",
+		.callback = req_set_port_feature
+	},
+	{
+		.callback = NULL
+	}
+};
+
+
+/** Hub operations. */
+usbvirt_device_ops_t hub_ops = {
+	.control = endpoint_zero_handlers,
+	.data_in[HUB_STATUS_CHANGE_PIPE] = req_on_status_change_pipe,
+	.state_changed = on_state_change,
+};
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/main.c
===================================================================
--- uspace/drv/vhc/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */ 
+/** @file
+ * Virtual host controller.
+ */
+
+#include <devmap.h>
+#include <async.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sysinfo.h>
+#include <stdio.h>
+#include <errno.h>
+#include <str_error.h>
+#include <ddf/driver.h>
+
+#include <usb/usb.h>
+#include <usb/ddfiface.h>
+#include <usb_iface.h>
+#include "vhcd.h"
+#include "hub.h"
+#include "conn.h"
+
+static ddf_dev_ops_t vhc_ops = {
+	.interfaces[USBHC_DEV_IFACE] = &vhc_iface,
+	.interfaces[USB_DEV_IFACE] = &vhc_usb_iface,
+	.close = on_client_close,
+	.default_handler = default_connection_handler
+};
+
+static int vhc_add_device(ddf_dev_t *dev)
+{
+	static int vhc_count = 0;
+	int rc;
+
+	if (vhc_count > 0) {
+		return ELIMIT;
+	}
+
+	vhc_data_t *data = malloc(sizeof(vhc_data_t));
+	if (data == NULL) {
+		usb_log_fatal("Failed to allocate memory.\n");
+		return ENOMEM;
+	}
+	data->magic = 0xDEADBEEF;
+	rc = usb_endpoint_manager_init(&data->ep_manager, (size_t) -1);
+	if (rc != EOK) {
+		usb_log_fatal("Failed to initialize endpoint manager.\n");
+		free(data);
+		return rc;
+	}
+	usb_device_keeper_init(&data->dev_keeper);
+
+	ddf_fun_t *hc = ddf_fun_create(dev, fun_exposed, "hc");
+	if (hc == NULL) {
+		usb_log_fatal("Failed to create device function.\n");
+		free(data);
+		return ENOMEM;
+	}
+
+	hc->ops = &vhc_ops;
+	list_initialize(&data->devices);
+	fibril_mutex_initialize(&data->guard);
+	data->hub = &virtual_hub_device;
+	data->hc_fun = hc;
+
+	dev->driver_data = data;
+
+	rc = ddf_fun_bind(hc);
+	if (rc != EOK) {
+		usb_log_fatal("Failed to bind HC function: %s.\n",
+		    str_error(rc));
+		free(data);
+		return rc;
+	}
+
+	rc = ddf_fun_add_to_class(hc, USB_HC_DDF_CLASS_NAME);
+	if (rc != EOK) {
+		usb_log_fatal("Failed to add function to HC class: %s.\n",
+		    str_error(rc));
+		free(data);
+		return rc;
+	}
+
+	virtual_hub_device_init(hc);
+
+	usb_log_info("Virtual USB host controller ready (dev %zu, hc %zu).\n",
+	    (size_t) dev->handle, (size_t) hc->handle);
+
+
+
+	rc = vhc_virtdev_plug_hub(data, data->hub, NULL);
+	if (rc != EOK) {
+		usb_log_fatal("Failed to plug root hub: %s.\n", str_error(rc));
+		free(data);
+		return rc;
+	}
+
+	return EOK;
+}
+
+static driver_ops_t vhc_driver_ops = {
+	.add_device = vhc_add_device,
+};
+
+static driver_t vhc_driver = {
+	.name = NAME,
+	.driver_ops = &vhc_driver_ops
+};
+
+
+int main(int argc, char * argv[])
+{	
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+
+	printf(NAME ": virtual USB host controller driver.\n");
+
+	return ddf_driver_main(&vhc_driver);
+}
+
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/transfer.c
===================================================================
--- uspace/drv/vhc/transfer.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/transfer.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,259 @@
+#include <errno.h>
+#include <str_error.h>
+#include <usbvirt/device.h>
+#include <usbvirt/ipc.h>
+#include "vhcd.h"
+
+vhc_transfer_t *vhc_transfer_create(usb_address_t address, usb_endpoint_t ep,
+    usb_direction_t dir, usb_transfer_type_t tr_type,
+    ddf_fun_t *fun, void *callback_arg)
+{
+	vhc_transfer_t *result = malloc(sizeof(vhc_transfer_t));
+	if (result == NULL) {
+		return NULL;
+	}
+	link_initialize(&result->link);
+	result->address = address;
+	result->endpoint = ep;
+	result->direction = dir;
+	result->transfer_type = tr_type;
+	result->setup_buffer = NULL;
+	result->setup_buffer_size = 0;
+	result->data_buffer = NULL;
+	result->data_buffer_size = 0;
+	result->ddf_fun = fun;
+	result->callback_arg = callback_arg;
+	result->callback_in = NULL;
+	result->callback_out = NULL;
+
+	usb_log_debug2("Created transfer %p (%d.%d %s %s)\n", result,
+	    address, ep, usb_str_transfer_type_short(tr_type),
+	    dir == USB_DIRECTION_IN ? "in" : "out");
+
+	return result;
+}
+
+static bool is_set_address_transfer(vhc_transfer_t *transfer)
+{
+	if (transfer->endpoint != 0) {
+		return false;
+	}
+	if (transfer->transfer_type != USB_TRANSFER_CONTROL) {
+		return false;
+	}
+	if (transfer->direction != USB_DIRECTION_OUT) {
+		return false;
+	}
+	if (transfer->setup_buffer_size != sizeof(usb_device_request_setup_packet_t)) {
+		return false;
+	}
+	usb_device_request_setup_packet_t *setup = transfer->setup_buffer;
+	if (setup->request_type != 0) {
+		return false;
+	}
+	if (setup->request != USB_DEVREQ_SET_ADDRESS) {
+		return false;
+	}
+
+	return true;
+}
+
+int vhc_virtdev_add_transfer(vhc_data_t *vhc, vhc_transfer_t *transfer)
+{
+	fibril_mutex_lock(&vhc->guard);
+
+	bool target_found = false;
+	list_foreach(vhc->devices, pos) {
+		vhc_virtdev_t *dev = list_get_instance(pos, vhc_virtdev_t, link);
+		fibril_mutex_lock(&dev->guard);
+		if (dev->address == transfer->address) {
+			if (target_found) {
+				usb_log_warning("Transfer would be accepted by more devices!\n");
+				goto next;
+			}
+			target_found = true;
+			list_append(&transfer->link, &dev->transfer_queue);
+		}
+next:
+		fibril_mutex_unlock(&dev->guard);
+	}
+
+	fibril_mutex_unlock(&vhc->guard);
+
+	if (target_found) {
+		return EOK;
+	} else {
+		return ENOENT;
+	}
+}
+
+static int process_transfer_local(vhc_transfer_t *transfer,
+    usbvirt_device_t *dev, size_t *actual_data_size)
+{
+	int rc;
+
+	if (transfer->transfer_type == USB_TRANSFER_CONTROL) {
+		if (transfer->direction == USB_DIRECTION_IN) {
+			rc = usbvirt_control_read(dev,
+			    transfer->setup_buffer, transfer->setup_buffer_size,
+			    transfer->data_buffer, transfer->data_buffer_size,
+			    actual_data_size);
+		} else {
+			assert(transfer->direction == USB_DIRECTION_OUT);
+			rc = usbvirt_control_write(dev,
+			    transfer->setup_buffer, transfer->setup_buffer_size,
+			    transfer->data_buffer, transfer->data_buffer_size);
+		}
+	} else {
+		if (transfer->direction == USB_DIRECTION_IN) {
+			rc = usbvirt_data_in(dev, transfer->transfer_type,
+			    transfer->endpoint,
+			    transfer->data_buffer, transfer->data_buffer_size,
+			    actual_data_size);
+		} else {
+			assert(transfer->direction == USB_DIRECTION_OUT);
+			rc = usbvirt_data_out(dev, transfer->transfer_type,
+			    transfer->endpoint,
+			    transfer->data_buffer, transfer->data_buffer_size);
+		}
+	}
+
+	return rc;
+}
+
+static int process_transfer_remote(vhc_transfer_t *transfer,
+    int phone, size_t *actual_data_size)
+{
+	int rc;
+
+	if (transfer->transfer_type == USB_TRANSFER_CONTROL) {
+		if (transfer->direction == USB_DIRECTION_IN) {
+			rc = usbvirt_ipc_send_control_read(phone,
+			    transfer->setup_buffer, transfer->setup_buffer_size,
+			    transfer->data_buffer, transfer->data_buffer_size,
+			    actual_data_size);
+		} else {
+			assert(transfer->direction == USB_DIRECTION_OUT);
+			rc = usbvirt_ipc_send_control_write(phone,
+			    transfer->setup_buffer, transfer->setup_buffer_size,
+			    transfer->data_buffer, transfer->data_buffer_size);
+		}
+	} else {
+		if (transfer->direction == USB_DIRECTION_IN) {
+			rc = usbvirt_ipc_send_data_in(phone, transfer->endpoint,
+			    transfer->transfer_type,
+			    transfer->data_buffer, transfer->data_buffer_size,
+			    actual_data_size);
+		} else {
+			assert(transfer->direction == USB_DIRECTION_OUT);
+			rc = usbvirt_ipc_send_data_out(phone, transfer->endpoint,
+			    transfer->transfer_type,
+			    transfer->data_buffer, transfer->data_buffer_size);
+		}
+	}
+
+	return rc;
+}
+
+static vhc_transfer_t *dequeue_first_transfer(vhc_virtdev_t *dev)
+{
+	assert(fibril_mutex_is_locked(&dev->guard));
+	assert(!list_empty(&dev->transfer_queue));
+
+	vhc_transfer_t *transfer = list_get_instance(dev->transfer_queue.next,
+	    vhc_transfer_t, link);
+	list_remove(&transfer->link);
+
+	return transfer;
+}
+
+
+static void execute_transfer_callback_and_free(vhc_transfer_t *transfer,
+    size_t data_transfer_size, int outcome)
+{
+	assert(outcome != ENAK);
+
+	usb_log_debug2("Transfer %p ended: %s.\n",
+	    transfer, str_error(outcome));
+
+	if (transfer->direction == USB_DIRECTION_IN) {
+		transfer->callback_in(transfer->ddf_fun, outcome,
+		    data_transfer_size, transfer->callback_arg);
+	} else {
+		assert(transfer->direction == USB_DIRECTION_OUT);
+		transfer->callback_out(transfer->ddf_fun, outcome,
+		    transfer->callback_arg);
+	}
+
+	free(transfer);
+}
+
+int vhc_transfer_queue_processor(void *arg)
+{
+	vhc_virtdev_t *dev = arg;
+	fibril_mutex_lock(&dev->guard);
+	while (dev->plugged) {
+		if (list_empty(&dev->transfer_queue)) {
+			fibril_mutex_unlock(&dev->guard);
+			async_usleep(10 * 1000);
+			fibril_mutex_lock(&dev->guard);
+			continue;
+		}
+
+		vhc_transfer_t *transfer = dequeue_first_transfer(dev);
+		fibril_mutex_unlock(&dev->guard);
+
+		int rc = EOK;
+		size_t data_transfer_size = 0;
+		if (dev->dev_phone > 0) {
+			rc = process_transfer_remote(transfer, dev->dev_phone,
+			    &data_transfer_size);
+		} else if (dev->dev_local != NULL) {
+			rc = process_transfer_local(transfer, dev->dev_local,
+			    &data_transfer_size);
+		} else {
+			usb_log_warning("Device has no remote phone nor local node.\n");
+			rc = ESTALL;
+		}
+
+		usb_log_debug2("Transfer %p processed: %s.\n",
+		    transfer, str_error(rc));
+
+		fibril_mutex_lock(&dev->guard);
+		if (rc == EOK) {
+			if (is_set_address_transfer(transfer)) {
+				usb_device_request_setup_packet_t *setup
+				    = transfer->setup_buffer;
+				dev->address = setup->value;
+				usb_log_debug2("Address changed to %d\n",
+				    dev->address);
+			}
+		}
+		if (rc == ENAK) {
+			// FIXME: this will work only because we do
+			// not NAK control transfers but this is generally
+			// a VERY bad idea indeed
+			list_append(&transfer->link, &dev->transfer_queue);
+		}
+		fibril_mutex_unlock(&dev->guard);
+
+		if (rc != ENAK) {
+			execute_transfer_callback_and_free(transfer,
+			    data_transfer_size, rc);
+		}
+
+		async_usleep(1000 * 100);
+		fibril_mutex_lock(&dev->guard);
+	}
+
+	/* Immediately fail all remaining transfers. */
+	while (!list_empty(&dev->transfer_queue)) {
+		vhc_transfer_t *transfer = dequeue_first_transfer(dev);
+		execute_transfer_callback_and_free(transfer, 0, EBADCHECKSUM);
+	}
+
+	fibril_mutex_unlock(&dev->guard);
+
+	return EOK;
+}
+
Index: uspace/drv/vhc/vhc.ma
===================================================================
--- uspace/drv/vhc/vhc.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/vhc.ma	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,2 @@
+10 usb&hc=vhc
+
Index: uspace/drv/vhc/vhcd.h
===================================================================
--- uspace/drv/vhc/vhcd.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/drv/vhc/vhcd.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbvhc
+ * @{
+ */
+/** @file
+ * @brief Virtual USB host controller common definitions.
+ */
+#ifndef VHCD_VHCD_H_
+#define VHCD_VHCD_H_
+
+#include <usb/debug.h>
+#include <usbvirt/device.h>
+#include <usb/host/usb_endpoint_manager.h>
+#include <usb/host/device_keeper.h>
+#include <usbhc_iface.h>
+
+#define NAME "vhc"
+
+typedef struct {
+	link_t link;
+	int dev_phone;
+	usbvirt_device_t *dev_local;
+	bool plugged;
+	usb_address_t address;
+	fibril_mutex_t guard;
+	link_t transfer_queue;
+} vhc_virtdev_t;
+
+typedef struct {
+	uint32_t magic;
+	link_t devices;
+	fibril_mutex_t guard;
+	usb_endpoint_manager_t ep_manager;
+	usb_device_keeper_t dev_keeper;
+	usbvirt_device_t *hub;
+	ddf_fun_t *hc_fun;
+} vhc_data_t;
+
+typedef struct {
+	link_t link;
+	usb_address_t address;
+	usb_endpoint_t endpoint;
+	usb_direction_t direction;
+	usb_transfer_type_t transfer_type;
+	void *setup_buffer;
+	size_t setup_buffer_size;
+	void *data_buffer;
+	size_t data_buffer_size;
+	ddf_fun_t *ddf_fun;
+	void *callback_arg;
+	usbhc_iface_transfer_in_callback_t callback_in;
+	usbhc_iface_transfer_out_callback_t callback_out;
+} vhc_transfer_t;
+
+vhc_transfer_t *vhc_transfer_create(usb_address_t, usb_endpoint_t,
+    usb_direction_t, usb_transfer_type_t, ddf_fun_t *, void *);
+int vhc_virtdev_plug(vhc_data_t *, int, uintptr_t *);
+int vhc_virtdev_plug_local(vhc_data_t *, usbvirt_device_t *, uintptr_t *);
+int vhc_virtdev_plug_hub(vhc_data_t *, usbvirt_device_t *, uintptr_t *);
+void vhc_virtdev_unplug(vhc_data_t *, uintptr_t);
+int vhc_virtdev_add_transfer(vhc_data_t *, vhc_transfer_t *);
+
+int vhc_transfer_queue_processor(void *arg);
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/c/Makefile
===================================================================
--- uspace/lib/c/Makefile	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -76,4 +76,5 @@
 	generic/str.c \
 	generic/str_error.c \
+	generic/l18n/langs.c \
 	generic/fibril.c \
 	generic/fibril_synch.c \
Index: uspace/lib/c/generic/adt/hash_table.c
===================================================================
--- uspace/lib/c/generic/adt/hash_table.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/generic/adt/hash_table.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -54,5 +54,5 @@
  *
  */
-int hash_table_create(hash_table_t *h, hash_count_t m, hash_count_t max_keys,
+bool hash_table_create(hash_table_t *h, hash_count_t m, hash_count_t max_keys,
     hash_table_operations_t *op)
 {
Index: uspace/lib/c/generic/as.c
===================================================================
--- uspace/lib/c/generic/as.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/generic/as.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -35,4 +35,5 @@
 #include <as.h>
 #include <libc.h>
+#include <errno.h>
 #include <unistd.h>
 #include <align.h>
@@ -114,4 +115,30 @@
 }
 
+/** Find mapping to physical address.
+ *
+ * @param address Virtual address in question (virtual).
+ * @param[out] frame Frame address (physical).
+ * @return Error code.
+ * @retval EOK No error, @p frame holds the translation.
+ * @retval ENOENT Mapping not found.
+ */
+int as_get_physical_mapping(void *address, uintptr_t *frame)
+{
+	uintptr_t tmp_frame;
+	uintptr_t virt = (uintptr_t) address;
+	
+	int rc = (int) __SYSCALL2(SYS_PAGE_FIND_MAPPING,
+	    (sysarg_t) virt, (sysarg_t) &tmp_frame);
+	if (rc != EOK) {
+		return rc;
+	}
+	
+	if (frame != NULL) {
+		*frame = tmp_frame;
+	}
+	
+	return EOK;
+}
+
 /** @}
  */
Index: uspace/lib/c/generic/async.c
===================================================================
--- uspace/lib/c/generic/async.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/generic/async.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -1569,4 +1569,18 @@
 }
 
+/** Start IPC_M_DATA_READ using the async framework.
+ *
+ * @param phoneid Phone that will be used to contact the receiving side.
+ * @param dst Address of the beginning of the destination buffer.
+ * @param size Size of the destination buffer (in bytes).
+ * @param dataptr Storage of call data (arg 2 holds actual data size).
+ * @return Hash of the sent message or 0 on error.
+ */
+aid_t async_data_read(int phoneid, void *dst, size_t size, ipc_call_t *dataptr)
+{
+	return async_send_2(phoneid, IPC_M_DATA_READ, (sysarg_t) dst,
+	    (sysarg_t) size, dataptr);
+}
+
 /** Wrapper for IPC_M_DATA_READ calls using the async framework.
  *
Index: uspace/lib/c/generic/devman.c
===================================================================
--- uspace/lib/c/generic/devman.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/generic/devman.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -374,4 +374,60 @@
 }
 
+int devman_get_device_path(devman_handle_t handle, char *path, size_t path_size)
+{
+	int phone = devman_get_phone(DEVMAN_CLIENT, 0);
+
+	if (phone < 0)
+		return phone;
+
+	async_serialize_start();
+
+	ipc_call_t answer;
+	aid_t req = async_send_1(phone, DEVMAN_DEVICE_GET_DEVICE_PATH,
+	    handle, &answer);
+
+	ipc_call_t data_request_call;
+	aid_t data_request = async_data_read(phone, path, path_size,
+	    &data_request_call);
+	if (data_request == 0) {
+		async_wait_for(req, NULL);
+		async_serialize_end();
+		return ENOMEM;
+	}
+
+	sysarg_t data_request_rc;
+	sysarg_t opening_request_rc;
+	async_wait_for(data_request, &data_request_rc);
+	async_wait_for(req, &opening_request_rc);
+
+	async_serialize_end();
+
+	if (data_request_rc != EOK) {
+		/* Prefer the return code of the opening request. */
+		if (opening_request_rc != EOK) {
+			return (int) opening_request_rc;
+		} else {
+			return (int) data_request_rc;
+		}
+	}
+	if (opening_request_rc != EOK) {
+		return (int) opening_request_rc;
+	}
+
+	/* To be on the safe-side. */
+	path[path_size - 1] = 0;
+
+	size_t transferred_size = IPC_GET_ARG2(data_request_call);
+
+	if (transferred_size >= path_size) {
+		return ELIMIT;
+	}
+
+	/* Terminate the string (trailing 0 not send over IPC). */
+	path[transferred_size] = 0;
+
+	return EOK;
+}
+
 
 /** @}
Index: uspace/lib/c/generic/l18n/langs.c
===================================================================
--- uspace/lib/c/generic/l18n/langs.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/c/generic/l18n/langs.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libc
+ * @{
+ */
+/** @file
+ * Language and locale ids.
+ */
+
+#include <l18n/langs.h>
+#include <stdio.h>
+#include <fibril.h>
+
+#define UNKNOWN_LOCALE_LEN 64
+
+static fibril_local char unknown_locale[UNKNOWN_LOCALE_LEN];
+
+/** Get string representation of a given locale.
+ *
+ * @param locale The locale.
+ * @return Name of the locale.
+ */
+const char *str_l18_win_locale(l18_win_locales_t locale)
+{
+	/*
+	 * Static array with names might be better but it would be
+	 * way too big.
+	 */
+	switch (locale) {
+		case L18N_WIN_LOCALE_AFRIKAANS:
+			return "Afrikaans";
+		case L18N_WIN_LOCALE_CZECH:
+			return "Czech";
+		case L18N_WIN_LOCALE_ENGLISH_UNITED_STATES:
+			return "English (US)";
+		case L18N_WIN_LOCALE_SLOVAK:
+			return "Slovak";
+		case L18N_WIN_LOCALE_SPANISH_TRADITIONAL:
+			return "Spanish (traditional)";
+		case L18N_WIN_LOCALE_ZULU:
+			return "Zulu";
+	}
+
+	snprintf(unknown_locale, UNKNOWN_LOCALE_LEN, "Unknown locale 0x%04d",
+	    (int) locale);
+	return unknown_locale;
+}
+
+/** @}
+ */
Index: uspace/lib/c/generic/malloc.c
===================================================================
--- uspace/lib/c/generic/malloc.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/generic/malloc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -291,5 +291,5 @@
 	size_t asize = ALIGN_UP(size, PAGE_SIZE);
 	
-	astart = as_area_create(astart, asize, AS_AREA_WRITE | AS_AREA_READ);
+	astart = as_area_create(astart, asize, AS_AREA_WRITE | AS_AREA_READ | AS_AREA_CACHEABLE);
 	if (astart == (void *) -1)
 		return false;
Index: uspace/lib/c/generic/str_error.c
===================================================================
--- uspace/lib/c/generic/str_error.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/generic/str_error.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -33,4 +33,5 @@
  */
 
+#include <errno.h>
 #include <str_error.h>
 #include <stdio.h>
@@ -63,10 +64,24 @@
 static fibril_local char noerr[NOERR_LEN];
 
-const char *str_error(const int errno)
+const char *str_error(const int e)
 {
-	if ((errno <= 0) && (errno >= MIN_ERRNO))
-		return err_desc[-errno];
+	if ((e <= 0) && (e >= MIN_ERRNO))
+		return err_desc[-e];
 	
-	snprintf(noerr, NOERR_LEN, "Unkown error code %d", errno);
+	/* Ad hoc descriptions of error codes interesting for USB. */
+	switch (e) {
+		case EBADCHECKSUM:
+			return "Bad checksum";
+		case ESTALL:
+			return "Operation stalled";
+		case EAGAIN:
+			return "Resource temporarily unavailable";
+		case EEMPTY:
+			return "Resource is empty";
+		default:
+			break;
+	}
+
+	snprintf(noerr, NOERR_LEN, "Unkown error code %d", e);
 	return noerr;
 }
Index: uspace/lib/c/generic/time.c
===================================================================
--- uspace/lib/c/generic/time.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/generic/time.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -207,4 +207,10 @@
 }
 
+void udelay(useconds_t time)
+{
+	(void) __SYSCALL1(SYS_THREAD_UDELAY, (sysarg_t) time);
+}
+
+
 /** Wait unconditionally for specified number of seconds
  *
Index: uspace/lib/c/include/adt/hash_table.h
===================================================================
--- uspace/lib/c/include/adt/hash_table.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/include/adt/hash_table.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -38,4 +38,5 @@
 #include <adt/list.h>
 #include <unistd.h>
+#include <bool.h>
 
 typedef unsigned long hash_count_t;
@@ -83,5 +84,5 @@
     list_get_instance((item), type, member)
 
-extern int hash_table_create(hash_table_t *, hash_count_t, hash_count_t,
+extern bool hash_table_create(hash_table_t *, hash_count_t, hash_count_t,
     hash_table_operations_t *);
 extern void hash_table_insert(hash_table_t *, unsigned long [], link_t *);
Index: uspace/lib/c/include/as.h
===================================================================
--- uspace/lib/c/include/as.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/include/as.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -60,4 +60,5 @@
 extern void *set_maxheapsize(size_t);
 extern void *as_get_mappable_page(size_t);
+extern int as_get_physical_mapping(void *, uintptr_t *);
 
 #endif
Index: uspace/lib/c/include/async.h
===================================================================
--- uspace/lib/c/include/async.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/include/async.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -340,4 +340,5 @@
 	    (arg4), (answer))
 
+extern aid_t async_data_read(int, void *, size_t, ipc_call_t *);
 #define async_data_read_start(p, buf, len) \
 	async_data_read_start_generic((p), (buf), (len), IPC_XF_NONE)
Index: uspace/lib/c/include/devman.h
===================================================================
--- uspace/lib/c/include/devman.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/include/devman.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -55,4 +55,5 @@
 extern int devman_device_get_handle_by_class(const char *, const char *,
     devman_handle_t *, unsigned int);
+extern int devman_get_device_path(devman_handle_t, char *, size_t);
 
 extern int devman_add_device_to_class(devman_handle_t, const char *);
Index: uspace/lib/c/include/errno.h
===================================================================
--- uspace/lib/c/include/errno.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/include/errno.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -56,4 +56,16 @@
 #define EMLINK        (-266)
 
+/** Bad checksum. */
+#define EBADCHECKSUM  (-300)
+
+/** USB: stalled operation. */
+#define ESTALL (-301)
+
+/** Empty resource (no data). */
+#define EEMPTY (-302)
+
+/** Negative acknowledgment. */
+#define ENAK (-303)
+
 /** An API function is called while another blocking function is in progress. */
 #define EINPROGRESS  (-10036)
Index: uspace/lib/c/include/ipc/dev_iface.h
===================================================================
--- uspace/lib/c/include/ipc/dev_iface.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/include/ipc/dev_iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -37,4 +37,15 @@
 	HW_RES_DEV_IFACE = 0,
 	CHAR_DEV_IFACE,
+
+	/** Interface provided by any PCI device. */
+	PCI_DEV_IFACE,
+
+	/** Interface provided by any USB device. */
+	USB_DEV_IFACE,
+	/** Interface provided by USB host controller. */
+	USBHC_DEV_IFACE,
+	/** Interface provided by USB HID devices. */
+	USBHID_DEV_IFACE,
+
 	DEV_IFACE_MAX
 } dev_inferface_idx_t;
@@ -48,4 +59,14 @@
 	DEV_IFACE_ID(DEV_FIRST_CUSTOM_METHOD_IDX)
 
+/*
+ * The first argument is actually method (as the "real" method is used
+ * for indexing into interfaces.
+ */
+
+#define DEV_IPC_GET_ARG1(call) IPC_GET_ARG2((call))
+#define DEV_IPC_GET_ARG2(call) IPC_GET_ARG3((call))
+#define DEV_IPC_GET_ARG3(call) IPC_GET_ARG4((call))
+#define DEV_IPC_GET_ARG4(call) IPC_GET_ARG5((call))
+
 
 #endif
Index: uspace/lib/c/include/ipc/devman.h
===================================================================
--- uspace/lib/c/include/ipc/devman.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/include/ipc/devman.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -149,5 +149,6 @@
 typedef enum {
 	DEVMAN_DEVICE_GET_HANDLE = IPC_FIRST_USER_METHOD,
-	DEVMAN_DEVICE_GET_HANDLE_BY_CLASS
+	DEVMAN_DEVICE_GET_HANDLE_BY_CLASS,
+	DEVMAN_DEVICE_GET_DEVICE_PATH
 } client_to_devman_t;
 
Index: uspace/lib/c/include/ipc/kbd.h
===================================================================
--- uspace/lib/c/include/ipc/kbd.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/include/ipc/kbd.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -39,7 +39,8 @@
 
 #include <ipc/common.h>
+#include <ipc/dev_iface.h>
 
 typedef enum {
-	KBD_YIELD = IPC_FIRST_USER_METHOD,
+	KBD_YIELD = DEV_FIRST_CUSTOM_METHOD,
 	KBD_RECLAIM
 } kbd_request_t;
Index: uspace/lib/c/include/l18n/langs.h
===================================================================
--- uspace/lib/c/include/l18n/langs.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/c/include/l18n/langs.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2005 Jakub Jermar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libc
+ * @{
+ */
+/** @file
+ * Language and locale ids.
+ */
+
+#ifndef LIBC_L18N_LANGS_H_
+#define LIBC_L18N_LANGS_H_
+
+/** Windows locale IDs.
+ * Codes taken from
+ * Developing International Software For Windows 95 and Windows NT
+ * by Nadine Kano (Microsoft Press).
+ * FIXME: add missing codes.
+ */
+typedef enum {
+	L18N_WIN_LOCALE_AFRIKAANS = 0x0436,
+	/* ... */
+	L18N_WIN_LOCALE_CZECH = 0x0405,
+	/* ... */
+	L18N_WIN_LOCALE_ENGLISH_UNITED_STATES = 0x0409,
+	/* ... */
+	L18N_WIN_LOCALE_SLOVAK = 0x041B,
+	/* ... */
+	L18N_WIN_LOCALE_SPANISH_TRADITIONAL = 0x040A,
+	/* ... */
+	L18N_WIN_LOCALE_ZULU = 0x0435
+} l18_win_locales_t;
+
+const char *str_l18_win_locale(l18_win_locales_t);
+
+#endif
+
+/** @}
+ */
Index: uspace/lib/c/include/sys/time.h
===================================================================
--- uspace/lib/c/include/sys/time.h	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/c/include/sys/time.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -62,4 +62,6 @@
 extern int gettimeofday(struct timeval *tv, struct timezone *tz);
 
+extern void udelay(useconds_t);
+
 #endif
 
Index: uspace/lib/drv/Makefile
===================================================================
--- uspace/lib/drv/Makefile	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/drv/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -29,5 +29,5 @@
 
 USPACE_PREFIX = ../..
-EXTRA_CFLAGS = -Iinclude
+EXTRA_CFLAGS = -Iinclude -I$(LIBUSB_PREFIX)/include
 LIBRARY = libdrv
 
@@ -35,7 +35,11 @@
 	generic/driver.c \
 	generic/dev_iface.c \
+	generic/remote_char_dev.c \
 	generic/log.c \
 	generic/remote_hw_res.c \
-	generic/remote_char_dev.c
+	generic/remote_usb.c \
+	generic/remote_pci.c \
+	generic/remote_usbhc.c \
+	generic/remote_usbhid.c
 
 include $(USPACE_PREFIX)/Makefile.common
Index: uspace/lib/drv/generic/dev_iface.c
===================================================================
--- uspace/lib/drv/generic/dev_iface.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/drv/generic/dev_iface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -41,9 +41,19 @@
 #include "remote_hw_res.h"
 #include "remote_char_dev.h"
+#include "remote_usb.h"
+#include "remote_usbhc.h"
+#include "remote_usbhid.h"
+#include "remote_pci.h"
+
+#include <stdio.h>
 
 static iface_dipatch_table_t remote_ifaces = {
 	.ifaces = {
 		&remote_hw_res_iface,
-		&remote_char_dev_iface
+		&remote_char_dev_iface,
+		&remote_pci_iface,
+		&remote_usb_iface,
+		&remote_usbhc_iface,
+		&remote_usbhid_iface
 	}
 };
@@ -52,4 +62,5 @@
 {
 	assert(is_valid_iface_idx(idx));
+	
 	return remote_ifaces.ifaces[idx];
 }
Index: uspace/lib/drv/generic/driver.c
===================================================================
--- uspace/lib/drv/generic/driver.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/lib/drv/generic/driver.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -405,5 +405,7 @@
 				/* The interface has not such method */
 				printf("%s: driver_connection_gen error - "
-				    "invalid interface method.", driver->name);
+				    "invalid interface method "
+				    "(index %" PRIun ").\n",
+				    driver->name, iface_method_idx);
 				async_answer_0(callid, ENOTSUP);
 				break;
Index: uspace/lib/drv/generic/remote_pci.c
===================================================================
--- uspace/lib/drv/generic/remote_pci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/generic/remote_pci.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,179 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @{
+ */
+/** @file
+ */
+#include <assert.h>
+#include <async.h>
+#include <errno.h>
+
+#include "pci_dev_iface.h"
+#include "ddf/driver.h"
+
+static void remote_config_space_read_8(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_config_space_read_16(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_config_space_read_32(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+
+static void remote_config_space_write_8(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_config_space_write_16(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_config_space_write_32(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+
+/** Remote USB interface operations. */
+static remote_iface_func_ptr_t remote_pci_iface_ops [] = {
+	remote_config_space_read_8,
+	remote_config_space_read_16,
+	remote_config_space_read_32,
+
+	remote_config_space_write_8,
+	remote_config_space_write_16,
+	remote_config_space_write_32
+};
+
+/** Remote USB interface structure.
+ */
+remote_iface_t remote_pci_iface = {
+	.method_count = sizeof(remote_pci_iface_ops) /
+	    sizeof(remote_pci_iface_ops[0]),
+	.methods = remote_pci_iface_ops
+};
+
+void remote_config_space_read_8(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
+{
+	assert(iface);
+	pci_dev_iface_t *pci_iface = (pci_dev_iface_t *)iface;
+	if (pci_iface->config_space_read_8 == NULL) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+	uint32_t address = DEV_IPC_GET_ARG1(*call);
+	uint8_t value;
+	int ret = pci_iface->config_space_read_8(fun, address, &value);
+	if (ret != EOK) {
+		async_answer_0(callid, ret);
+	} else {
+		async_answer_1(callid, EOK, value);
+	}
+}
+
+void remote_config_space_read_16(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
+{
+	assert(iface);
+	pci_dev_iface_t *pci_iface = (pci_dev_iface_t *)iface;
+	if (pci_iface->config_space_read_16 == NULL) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+	uint32_t address = DEV_IPC_GET_ARG1(*call);
+	uint16_t value;
+	int ret = pci_iface->config_space_read_16(fun, address, &value);
+	if (ret != EOK) {
+		async_answer_0(callid, ret);
+	} else {
+		async_answer_1(callid, EOK, value);
+	}
+}
+void remote_config_space_read_32(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
+{
+	assert(iface);
+	pci_dev_iface_t *pci_iface = (pci_dev_iface_t *)iface;
+	if (pci_iface->config_space_read_32 == NULL) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+	uint32_t address = DEV_IPC_GET_ARG1(*call);
+	uint32_t value;
+	int ret = pci_iface->config_space_read_32(fun, address, &value);
+	if (ret != EOK) {
+		async_answer_0(callid, ret);
+	} else {
+		async_answer_1(callid, EOK, value);
+	}
+}
+
+void remote_config_space_write_8(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
+{
+	assert(iface);
+	pci_dev_iface_t *pci_iface = (pci_dev_iface_t *)iface;
+	if (pci_iface->config_space_write_8 == NULL) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+	uint32_t address = DEV_IPC_GET_ARG1(*call);
+	uint8_t value = DEV_IPC_GET_ARG2(*call);
+	int ret = pci_iface->config_space_write_8(fun, address, value);
+	if (ret != EOK) {
+		async_answer_0(callid, ret);
+	} else {
+		async_answer_0(callid, EOK);
+	}
+}
+
+void remote_config_space_write_16(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
+{
+	assert(iface);
+	pci_dev_iface_t *pci_iface = (pci_dev_iface_t *)iface;
+	if (pci_iface->config_space_write_16 == NULL) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+	uint32_t address = DEV_IPC_GET_ARG1(*call);
+	uint16_t value = DEV_IPC_GET_ARG2(*call);
+	int ret = pci_iface->config_space_write_16(fun, address, value);
+	if (ret != EOK) {
+		async_answer_0(callid, ret);
+	} else {
+		async_answer_0(callid, EOK);
+	}
+}
+
+void remote_config_space_write_32(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
+{
+	assert(iface);
+	pci_dev_iface_t *pci_iface = (pci_dev_iface_t *)iface;
+	if (pci_iface->config_space_write_32 == NULL) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+	uint32_t address = DEV_IPC_GET_ARG1(*call);
+	uint32_t value = DEV_IPC_GET_ARG2(*call);
+	int ret = pci_iface->config_space_write_32(fun, address, value);
+	if (ret != EOK) {
+		async_answer_0(callid, ret);
+	} else {
+		async_answer_0(callid, EOK);
+	}
+}
+
+
+/**
+ * @}
+ */
+
Index: uspace/lib/drv/generic/remote_usb.c
===================================================================
--- uspace/lib/drv/generic/remote_usb.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/generic/remote_usb.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @{
+ */
+/** @file
+ */
+
+#include <async.h>
+#include <errno.h>
+
+#include "usb_iface.h"
+#include "ddf/driver.h"
+
+
+static void remote_usb_get_address(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usb_get_interface(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usb_get_hc_handle(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+//static void remote_usb(device_t *, void *, ipc_callid_t, ipc_call_t *);
+
+/** Remote USB interface operations. */
+static remote_iface_func_ptr_t remote_usb_iface_ops [] = {
+	remote_usb_get_address,
+	remote_usb_get_interface,
+	remote_usb_get_hc_handle
+};
+
+/** Remote USB interface structure.
+ */
+remote_iface_t remote_usb_iface = {
+	.method_count = sizeof(remote_usb_iface_ops) /
+	    sizeof(remote_usb_iface_ops[0]),
+	.methods = remote_usb_iface_ops
+};
+
+
+void remote_usb_get_address(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usb_iface_t *usb_iface = (usb_iface_t *) iface;
+
+	if (usb_iface->get_address == NULL) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	devman_handle_t handle = DEV_IPC_GET_ARG1(*call);
+
+	usb_address_t address;
+	int rc = usb_iface->get_address(fun, handle, &address);
+	if (rc != EOK) {
+		async_answer_0(callid, rc);
+	} else {
+		async_answer_1(callid, EOK, address);
+	}
+}
+
+void remote_usb_get_interface(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usb_iface_t *usb_iface = (usb_iface_t *) iface;
+
+	if (usb_iface->get_interface == NULL) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	devman_handle_t handle = DEV_IPC_GET_ARG1(*call);
+
+	int iface_no;
+	int rc = usb_iface->get_interface(fun, handle, &iface_no);
+	if (rc != EOK) {
+		async_answer_0(callid, rc);
+	} else {
+		async_answer_1(callid, EOK, iface_no);
+	}
+}
+
+void remote_usb_get_hc_handle(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usb_iface_t *usb_iface = (usb_iface_t *) iface;
+
+	if (usb_iface->get_hc_handle == NULL) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	devman_handle_t handle;
+	int rc = usb_iface->get_hc_handle(fun, &handle);
+	if (rc != EOK) {
+		async_answer_0(callid, rc);
+	}
+
+	async_answer_1(callid, EOK, (sysarg_t) handle);
+}
+
+
+
+/**
+ * @}
+ */
Index: uspace/lib/drv/generic/remote_usbhc.c
===================================================================
--- uspace/lib/drv/generic/remote_usbhc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/generic/remote_usbhc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,583 @@
+/*
+ * Copyright (c) 2010-2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @{
+ */
+/** @file
+ */
+
+#include <async.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "usbhc_iface.h"
+#include "ddf/driver.h"
+
+#define USB_MAX_PAYLOAD_SIZE 1020
+#define HACK_MAX_PACKET_SIZE 8
+#define HACK_MAX_PACKET_SIZE_INTERRUPT_IN 4
+
+static void remote_usbhc_interrupt_out(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_interrupt_in(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_bulk_out(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_bulk_in(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_control_write(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_control_read(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_request_address(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_bind_address(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_find_by_address(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_release_address(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_register_endpoint(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhc_unregister_endpoint(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+//static void remote_usbhc(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+
+/** Remote USB host controller interface operations. */
+static remote_iface_func_ptr_t remote_usbhc_iface_ops [] = {
+	remote_usbhc_request_address,
+	remote_usbhc_bind_address,
+	remote_usbhc_find_by_address,
+	remote_usbhc_release_address,
+
+	remote_usbhc_interrupt_out,
+	remote_usbhc_interrupt_in,
+
+	remote_usbhc_bulk_out,
+	remote_usbhc_bulk_in,
+
+	remote_usbhc_control_write,
+	remote_usbhc_control_read,
+
+	remote_usbhc_register_endpoint,
+	remote_usbhc_unregister_endpoint
+};
+
+/** Remote USB host controller interface structure.
+ */
+remote_iface_t remote_usbhc_iface = {
+	.method_count = sizeof(remote_usbhc_iface_ops) /
+	    sizeof(remote_usbhc_iface_ops[0]),
+	.methods = remote_usbhc_iface_ops
+};
+
+typedef struct {
+	ipc_callid_t caller;
+	ipc_callid_t data_caller;
+	void *buffer;
+	void *setup_packet;
+	size_t size;
+} async_transaction_t;
+
+static void async_transaction_destroy(async_transaction_t *trans)
+{
+	if (trans == NULL) {
+		return;
+	}
+
+	if (trans->setup_packet != NULL) {
+		free(trans->setup_packet);
+	}
+	if (trans->buffer != NULL) {
+		free(trans->buffer);
+	}
+
+	free(trans);
+}
+
+static async_transaction_t *async_transaction_create(ipc_callid_t caller)
+{
+	async_transaction_t *trans = malloc(sizeof(async_transaction_t));
+	if (trans == NULL) {
+		return NULL;
+	}
+
+	trans->caller = caller;
+	trans->data_caller = 0;
+	trans->buffer = NULL;
+	trans->setup_packet = NULL;
+	trans->size = 0;
+
+	return trans;
+}
+
+void remote_usbhc_request_address(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+
+	if (!usb_iface->request_address) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+	
+	usb_speed_t speed = DEV_IPC_GET_ARG1(*call);
+
+	usb_address_t address;
+	int rc = usb_iface->request_address(fun, speed, &address);
+	if (rc != EOK) {
+		async_answer_0(callid, rc);
+	} else {
+		async_answer_1(callid, EOK, (sysarg_t) address);
+	}
+}
+
+void remote_usbhc_bind_address(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+
+	if (!usb_iface->bind_address) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	usb_address_t address = (usb_address_t) DEV_IPC_GET_ARG1(*call);
+	devman_handle_t handle = (devman_handle_t) DEV_IPC_GET_ARG2(*call);
+
+	int rc = usb_iface->bind_address(fun, address, handle);
+
+	async_answer_0(callid, rc);
+}
+
+void remote_usbhc_find_by_address(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+
+	if (!usb_iface->find_by_address) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	usb_address_t address = (usb_address_t) DEV_IPC_GET_ARG1(*call);
+	devman_handle_t handle;
+	int rc = usb_iface->find_by_address(fun, address, &handle);
+
+	if (rc == EOK) {
+		async_answer_1(callid, EOK, handle);
+	} else {
+		async_answer_0(callid, rc);
+	}
+}
+
+void remote_usbhc_release_address(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+
+	if (!usb_iface->release_address) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	usb_address_t address = (usb_address_t) DEV_IPC_GET_ARG1(*call);
+
+	int rc = usb_iface->release_address(fun, address);
+
+	async_answer_0(callid, rc);
+}
+
+
+static void callback_out(ddf_fun_t *fun,
+    int outcome, void *arg)
+{
+	async_transaction_t *trans = (async_transaction_t *)arg;
+
+	async_answer_0(trans->caller, outcome);
+
+	async_transaction_destroy(trans);
+}
+
+static void callback_in(ddf_fun_t *fun,
+    int outcome, size_t actual_size, void *arg)
+{
+	async_transaction_t *trans = (async_transaction_t *)arg;
+
+	if (outcome != EOK) {
+		async_answer_0(trans->caller, outcome);
+		if (trans->data_caller) {
+			async_answer_0(trans->data_caller, EINTR);
+		}
+		async_transaction_destroy(trans);
+		return;
+	}
+
+	trans->size = actual_size;
+
+	if (trans->data_caller) {
+		async_data_read_finalize(trans->data_caller,
+		    trans->buffer, actual_size);
+	}
+
+	async_answer_0(trans->caller, EOK);
+
+	async_transaction_destroy(trans);
+}
+
+/** Process an outgoing transfer (both OUT and SETUP).
+ *
+ * @param device Target device.
+ * @param callid Initiating caller.
+ * @param call Initiating call.
+ * @param transfer_func Transfer function (might be NULL).
+ */
+static void remote_usbhc_out_transfer(ddf_fun_t *fun,
+    ipc_callid_t callid, ipc_call_t *call,
+    usbhc_iface_transfer_out_t transfer_func)
+{
+	if (!transfer_func) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	usb_target_t target = {
+		.address = DEV_IPC_GET_ARG1(*call),
+		.endpoint = DEV_IPC_GET_ARG2(*call)
+	};
+
+	size_t len = 0;
+	void *buffer = NULL;
+
+	int rc = async_data_write_accept(&buffer, false,
+	    1, USB_MAX_PAYLOAD_SIZE,
+	    0, &len);
+
+	if (rc != EOK) {
+		async_answer_0(callid, rc);
+		return;
+	}
+
+	async_transaction_t *trans = async_transaction_create(callid);
+	if (trans == NULL) {
+		if (buffer != NULL) {
+			free(buffer);
+		}
+		async_answer_0(callid, ENOMEM);
+		return;
+	}
+
+	trans->buffer = buffer;
+	trans->size = len;
+
+	rc = transfer_func(fun, target,
+	    buffer, len,
+	    callback_out, trans);
+
+	if (rc != EOK) {
+		async_answer_0(callid, rc);
+		async_transaction_destroy(trans);
+	}
+}
+
+/** Process an incoming transfer.
+ *
+ * @param device Target device.
+ * @param callid Initiating caller.
+ * @param call Initiating call.
+ * @param transfer_func Transfer function (might be NULL).
+ */
+static void remote_usbhc_in_transfer(ddf_fun_t *fun,
+    ipc_callid_t callid, ipc_call_t *call,
+    usbhc_iface_transfer_in_t transfer_func)
+{
+	if (!transfer_func) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	usb_target_t target = {
+		.address = DEV_IPC_GET_ARG1(*call),
+		.endpoint = DEV_IPC_GET_ARG2(*call)
+	};
+
+	size_t len;
+	ipc_callid_t data_callid;
+	if (!async_data_read_receive(&data_callid, &len)) {
+		async_answer_0(callid, EPARTY);
+		return;
+	}
+
+	async_transaction_t *trans = async_transaction_create(callid);
+	if (trans == NULL) {
+		async_answer_0(data_callid, ENOMEM);
+		async_answer_0(callid, ENOMEM);
+		return;
+	}
+	trans->data_caller = data_callid;
+	trans->buffer = malloc(len);
+	trans->size = len;
+
+	int rc = transfer_func(fun, target,
+	    trans->buffer, len,
+	    callback_in, trans);
+
+	if (rc != EOK) {
+		async_answer_0(data_callid, rc);
+		async_answer_0(callid, rc);
+		async_transaction_destroy(trans);
+	}
+}
+
+void remote_usbhc_interrupt_out(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+	assert(usb_iface != NULL);
+
+	return remote_usbhc_out_transfer(fun, callid, call,
+	    usb_iface->interrupt_out);
+}
+
+void remote_usbhc_interrupt_in(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+	assert(usb_iface != NULL);
+
+	return remote_usbhc_in_transfer(fun, callid, call,
+	    usb_iface->interrupt_in);
+}
+
+void remote_usbhc_bulk_out(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+	assert(usb_iface != NULL);
+
+	return remote_usbhc_out_transfer(fun, callid, call,
+	    usb_iface->bulk_out);
+}
+
+void remote_usbhc_bulk_in(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+	assert(usb_iface != NULL);
+
+	return remote_usbhc_in_transfer(fun, callid, call,
+	    usb_iface->bulk_in);
+}
+
+void remote_usbhc_control_write(ddf_fun_t *fun, void *iface,
+ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+	assert(usb_iface != NULL);
+
+	if (!usb_iface->control_write) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	usb_target_t target = {
+		.address = DEV_IPC_GET_ARG1(*call),
+		.endpoint = DEV_IPC_GET_ARG2(*call)
+	};
+	size_t data_buffer_len = DEV_IPC_GET_ARG3(*call);
+
+	int rc;
+
+	void *setup_packet = NULL;
+	void *data_buffer = NULL;
+	size_t setup_packet_len = 0;
+
+	rc = async_data_write_accept(&setup_packet, false,
+	    1, USB_MAX_PAYLOAD_SIZE, 0, &setup_packet_len);
+	if (rc != EOK) {
+		async_answer_0(callid, rc);
+		return;
+	}
+
+	if (data_buffer_len > 0) {
+		rc = async_data_write_accept(&data_buffer, false,
+		    1, USB_MAX_PAYLOAD_SIZE, 0, &data_buffer_len);
+		if (rc != EOK) {
+			async_answer_0(callid, rc);
+			free(setup_packet);
+			return;
+		}
+	}
+
+	async_transaction_t *trans = async_transaction_create(callid);
+	if (trans == NULL) {
+		async_answer_0(callid, ENOMEM);
+		free(setup_packet);
+		free(data_buffer);
+		return;
+	}
+	trans->setup_packet = setup_packet;
+	trans->buffer = data_buffer;
+	trans->size = data_buffer_len;
+
+	rc = usb_iface->control_write(fun, target,
+	    setup_packet, setup_packet_len,
+	    data_buffer, data_buffer_len,
+	    callback_out, trans);
+
+	if (rc != EOK) {
+		async_answer_0(callid, rc);
+		async_transaction_destroy(trans);
+	}
+}
+
+
+void remote_usbhc_control_read(ddf_fun_t *fun, void *iface,
+ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+	assert(usb_iface != NULL);
+
+	if (!usb_iface->control_read) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	usb_target_t target = {
+		.address = DEV_IPC_GET_ARG1(*call),
+		.endpoint = DEV_IPC_GET_ARG2(*call)
+	};
+
+	int rc;
+
+	void *setup_packet = NULL;
+	size_t setup_packet_len = 0;
+	size_t data_len = 0;
+
+	rc = async_data_write_accept(&setup_packet, false,
+	    1, USB_MAX_PAYLOAD_SIZE, 0, &setup_packet_len);
+	if (rc != EOK) {
+		async_answer_0(callid, rc);
+		return;
+	}
+
+	ipc_callid_t data_callid;
+	if (!async_data_read_receive(&data_callid, &data_len)) {
+		async_answer_0(callid, EPARTY);
+		free(setup_packet);
+		return;
+	}
+
+	async_transaction_t *trans = async_transaction_create(callid);
+	if (trans == NULL) {
+		async_answer_0(data_callid, ENOMEM);
+		async_answer_0(callid, ENOMEM);
+		free(setup_packet);
+		return;
+	}
+	trans->data_caller = data_callid;
+	trans->setup_packet = setup_packet;
+	trans->size = data_len;
+	trans->buffer = malloc(data_len);
+	if (trans->buffer == NULL) {
+		async_answer_0(data_callid, ENOMEM);
+		async_answer_0(callid, ENOMEM);
+		async_transaction_destroy(trans);
+		return;
+	}
+
+	rc = usb_iface->control_read(fun, target,
+	    setup_packet, setup_packet_len,
+	    trans->buffer, trans->size,
+	    callback_in, trans);
+
+	if (rc != EOK) {
+		async_answer_0(data_callid, rc);
+		async_answer_0(callid, rc);
+		async_transaction_destroy(trans);
+	}
+}
+
+
+void remote_usbhc_register_endpoint(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+
+	if (!usb_iface->register_endpoint) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+#define _INIT_FROM_HIGH_DATA2(type, var, arg_no) \
+	type var = (type) DEV_IPC_GET_ARG##arg_no(*call) / (1 << 16)
+#define _INIT_FROM_LOW_DATA2(type, var, arg_no) \
+	type var = (type) DEV_IPC_GET_ARG##arg_no(*call) % (1 << 16)
+#define _INIT_FROM_HIGH_DATA3(type, var, arg_no) \
+	type var = (type) DEV_IPC_GET_ARG##arg_no(*call) / (1 << 16)
+#define _INIT_FROM_MIDDLE_DATA3(type, var, arg_no) \
+	type var = (type) (DEV_IPC_GET_ARG##arg_no(*call) / (1 << 8)) % (1 << 8)
+#define _INIT_FROM_LOW_DATA3(type, var, arg_no) \
+	type var = (type) DEV_IPC_GET_ARG##arg_no(*call) % (1 << 8)
+
+	_INIT_FROM_HIGH_DATA2(usb_address_t, address, 1);
+	_INIT_FROM_LOW_DATA2(usb_endpoint_t, endpoint, 1);
+
+	_INIT_FROM_HIGH_DATA3(usb_speed_t, speed, 2);
+	_INIT_FROM_MIDDLE_DATA3(usb_transfer_type_t, transfer_type, 2);
+	_INIT_FROM_LOW_DATA3(usb_direction_t, direction, 2);
+
+	_INIT_FROM_HIGH_DATA2(size_t, max_packet_size, 3);
+	_INIT_FROM_LOW_DATA2(unsigned int, interval, 3);
+
+#undef _INIT_FROM_HIGH_DATA2
+#undef _INIT_FROM_LOW_DATA2
+#undef _INIT_FROM_HIGH_DATA3
+#undef _INIT_FROM_MIDDLE_DATA3
+#undef _INIT_FROM_LOW_DATA3
+
+	int rc = usb_iface->register_endpoint(fun, address, speed, endpoint,
+	    transfer_type, direction, max_packet_size, interval);
+
+	async_answer_0(callid, rc);
+}
+
+
+void remote_usbhc_unregister_endpoint(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+
+	if (!usb_iface->unregister_endpoint) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	usb_address_t address = (usb_address_t) DEV_IPC_GET_ARG1(*call);
+	usb_endpoint_t endpoint = (usb_endpoint_t) DEV_IPC_GET_ARG2(*call);
+	usb_direction_t direction = (usb_direction_t) DEV_IPC_GET_ARG3(*call);
+
+	int rc = usb_iface->unregister_endpoint(fun,
+	    address, endpoint, direction);
+
+	async_answer_0(callid, rc);
+}
+
+
+/**
+ * @}
+ */
Index: uspace/lib/drv/generic/remote_usbhid.c
===================================================================
--- uspace/lib/drv/generic/remote_usbhid.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/generic/remote_usbhid.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,220 @@
+/*
+ * Copyright (c) 2010-2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @{
+ */
+/** @file
+ */
+
+#include <async.h>
+#include <errno.h>
+#include <assert.h>
+#include <stdio.h>
+
+#include "usbhid_iface.h"
+#include "ddf/driver.h"
+
+static void remote_usbhid_get_event_length(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhid_get_event(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhid_get_report_descriptor_length(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+static void remote_usbhid_get_report_descriptor(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+// static void remote_usbhid_(ddf_fun_t *, void *, ipc_callid_t, ipc_call_t *);
+
+/** Remote USB HID interface operations. */
+static remote_iface_func_ptr_t remote_usbhid_iface_ops [] = {
+	remote_usbhid_get_event_length,
+	remote_usbhid_get_event,
+	remote_usbhid_get_report_descriptor_length,
+	remote_usbhid_get_report_descriptor
+};
+
+/** Remote USB HID interface structure.
+ */
+remote_iface_t remote_usbhid_iface = {
+	.method_count = sizeof(remote_usbhid_iface_ops) /
+	    sizeof(remote_usbhid_iface_ops[0]),
+	.methods = remote_usbhid_iface_ops
+};
+
+//usbhc_iface_t *usb_iface = (usbhc_iface_t *) iface;
+
+
+void remote_usbhid_get_event_length(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	printf("remote_usbhid_get_event_length()\n");
+	
+	usbhid_iface_t *hid_iface = (usbhid_iface_t *) iface;
+
+	if (!hid_iface->get_event_length) {
+		printf("Get event length not set!\n");
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	size_t len = hid_iface->get_event_length(fun);
+//	if (len == 0) {
+//		len = EEMPTY;
+//	}
+	async_answer_1(callid, EOK, len);
+	
+//	if (len < 0) {
+//		async_answer_0(callid, len);
+//	} else {
+//		async_answer_1(callid, EOK, len);
+//	}
+}
+
+void remote_usbhid_get_event(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhid_iface_t *hid_iface = (usbhid_iface_t *) iface;
+
+	if (!hid_iface->get_event) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	unsigned int flags = DEV_IPC_GET_ARG1(*call);
+
+	size_t len;
+	ipc_callid_t data_callid;
+	if (!async_data_read_receive(&data_callid, &len)) {
+		async_answer_0(callid, EPARTY);
+		return;
+	}
+//	/* Check that length is even number. Truncate otherwise. */
+//	if ((len % 2) == 1) {
+//		len--;
+//	}
+	if (len == 0) {
+		async_answer_0(data_callid, EINVAL);
+		async_answer_0(callid, EINVAL);
+		return;
+	}
+
+	int rc;
+
+	uint8_t *data = malloc(len);
+	if (data == NULL) {
+		async_answer_0(data_callid, ENOMEM);
+		async_answer_0(callid, ENOMEM);
+		return;
+	}
+
+	size_t act_length;
+	int event_nr;
+	rc = hid_iface->get_event(fun, data, len, &act_length, &event_nr, flags);
+	if (rc != EOK) {
+		free(data);
+		async_answer_0(data_callid, rc);
+		async_answer_0(callid, rc);
+		return;
+	}
+	if (act_length >= len) {
+		/* This shall not happen. */
+		// FIXME: how about an assert here?
+		act_length = len;
+	}
+
+	async_data_read_finalize(data_callid, data, act_length);
+
+	free(data);
+
+	async_answer_1(callid, EOK, event_nr);
+}
+
+void remote_usbhid_get_report_descriptor_length(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhid_iface_t *hid_iface = (usbhid_iface_t *) iface;
+
+	if (!hid_iface->get_report_descriptor_length) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	size_t len = hid_iface->get_report_descriptor_length(fun);
+	async_answer_1(callid, EOK, (sysarg_t) len);
+}
+
+void remote_usbhid_get_report_descriptor(ddf_fun_t *fun, void *iface,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	usbhid_iface_t *hid_iface = (usbhid_iface_t *) iface;
+
+	if (!hid_iface->get_report_descriptor) {
+		async_answer_0(callid, ENOTSUP);
+		return;
+	}
+
+	size_t len;
+	ipc_callid_t data_callid;
+	if (!async_data_read_receive(&data_callid, &len)) {
+		async_answer_0(callid, EINVAL);
+		return;
+	}
+
+	if (len == 0) {
+		async_answer_0(data_callid, EINVAL);
+		async_answer_0(callid, EINVAL);
+		return;
+	}
+
+	uint8_t *descriptor = malloc(len);
+	if (descriptor == NULL) {
+		async_answer_0(data_callid, ENOMEM);
+		async_answer_0(callid, ENOMEM);
+		return;
+	}
+
+	size_t act_len = 0;
+	int rc = hid_iface->get_report_descriptor(fun, descriptor, len,
+	    &act_len);
+	if (act_len > len) {
+		rc = ELIMIT;
+	}
+	if (rc != EOK) {
+		free(descriptor);
+		async_answer_0(data_callid, rc);
+		async_answer_0(callid, rc);
+		return;
+	}
+
+	async_data_read_finalize(data_callid, descriptor, act_len);
+	async_answer_0(callid, EOK);
+
+	free(descriptor);
+}
+
+
+
+/**
+ * @}
+ */
Index: uspace/lib/drv/include/pci_dev_iface.h
===================================================================
--- uspace/lib/drv/include/pci_dev_iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/include/pci_dev_iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @addtogroup usb
+ * @{
+ */
+/** @file
+ * @brief PCI device interface definition.
+ */
+
+#ifndef LIBDRV_PCI_DEV_IFACE_H_
+#define LIBDRV_PCI_DEV_IFACE_H_
+
+#include "ddf/driver.h"
+
+typedef enum {
+	IPC_M_CONFIG_SPACE_READ_8,
+	IPC_M_CONFIG_SPACE_READ_16,
+	IPC_M_CONFIG_SPACE_READ_32,
+
+	IPC_M_CONFIG_SPACE_WRITE_8,
+	IPC_M_CONFIG_SPACE_WRITE_16,
+	IPC_M_CONFIG_SPACE_WRITE_32
+} pci_dev_iface_funcs_t;
+
+/** PCI device communication interface. */
+typedef struct {
+	int (*config_space_read_8)(ddf_fun_t *, uint32_t address, uint8_t *data);
+	int (*config_space_read_16)(ddf_fun_t *, uint32_t address, uint16_t *data);
+	int (*config_space_read_32)(ddf_fun_t *, uint32_t address, uint32_t *data);
+
+	int (*config_space_write_8)(ddf_fun_t *, uint32_t address, uint8_t data);
+	int (*config_space_write_16)(ddf_fun_t *, uint32_t address, uint16_t data);
+	int (*config_space_write_32)(ddf_fun_t *, uint32_t address, uint32_t data);
+} pci_dev_iface_t;
+
+
+#endif
+/**
+ * @}
+ */
+
Index: uspace/lib/drv/include/remote_pci.h
===================================================================
--- uspace/lib/drv/include/remote_pci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/include/remote_pci.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @{
+ */
+/** @file
+ */
+
+#ifndef LIBDRV_REMOTE_PCI_H_
+#define LIBDRV_REMOTE_PCI_H_
+
+extern remote_iface_t remote_pci_iface;
+
+#endif
+
+/**
+ * @}
+ */
+
Index: uspace/lib/drv/include/remote_usb.h
===================================================================
--- uspace/lib/drv/include/remote_usb.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/include/remote_usb.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @{
+ */
+/** @file
+ */
+
+#ifndef LIBDRV_REMOTE_USB_H_
+#define LIBDRV_REMOTE_USB_H_
+
+extern remote_iface_t remote_usb_iface;
+
+#endif
+
+/**
+ * @}
+ */
Index: uspace/lib/drv/include/remote_usbhc.h
===================================================================
--- uspace/lib/drv/include/remote_usbhc.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/include/remote_usbhc.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @{
+ */
+/** @file
+ */
+
+#ifndef LIBDRV_REMOTE_USBHC_H_
+#define LIBDRV_REMOTE_USBHC_H_
+
+extern remote_iface_t remote_usbhc_iface;
+
+#endif
+
+/**
+ * @}
+ */
Index: uspace/lib/drv/include/remote_usbhid.h
===================================================================
--- uspace/lib/drv/include/remote_usbhid.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/include/remote_usbhid.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @{
+ */
+/** @file
+ */
+
+#ifndef LIBDRV_REMOTE_USBHID_H_
+#define LIBDRV_REMOTE_USBHID_H_
+
+extern remote_iface_t remote_usbhid_iface;
+
+#endif
+
+/**
+ * @}
+ */
Index: uspace/lib/drv/include/usb_iface.h
===================================================================
--- uspace/lib/drv/include/usb_iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/include/usb_iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @addtogroup usb
+ * @{
+ */
+/** @file
+ * @brief USB interface definition.
+ */
+
+#ifndef LIBDRV_USB_IFACE_H_
+#define LIBDRV_USB_IFACE_H_
+
+#include "ddf/driver.h"
+#include <usb/usb.h>
+typedef enum {
+	/** Tell USB address assigned to device.
+	 * Parameters:
+	 * - devman handle id
+	 * Answer:
+	 * - EINVAL - unknown handle or handle not managed by this driver
+	 * - ENOTSUP - operation not supported (shall not happen)
+	 * - arbitrary error code if returned by remote implementation
+	 * - EOK - handle found, first parameter contains the USB address
+	 *
+	 * The handle must be the one used for binding USB address with
+	 * it (IPC_M_USBHC_BIND_ADDRESS), otherwise the host controller
+	 * (that this request would eventually reach) would not be able
+	 * to find it.
+	 * The problem is that this handle is actually assigned to the
+	 * function inside driver of the parent device (usually hub driver).
+	 * To bypass this problem, the initial caller specify handle as
+	 * zero and the first parent assigns the actual value.
+	 * See usb_iface_get_address_hub_child_impl() implementation
+	 * that could be assigned to device ops of a child device of in a
+	 * hub driver.
+	 * For example, the USB multi interface device driver (MID)
+	 * passes this initial zero without any modification because the
+	 * handle must be resolved by its parent.
+	 */
+	IPC_M_USB_GET_ADDRESS,
+
+	/** Tell interface number given device can use.
+	 * Parameters
+	 * - devman handle id of the device
+	 * Answer:
+	 * - ENOTSUP - operation not supported (can also mean any interface)
+	 * - EOK - operation okay, first parameter contains interface number
+	 */
+	IPC_M_USB_GET_INTERFACE,
+
+	/** Tell devman handle of device host controller.
+	 * Parameters:
+	 * - none
+	 * Answer:
+	 * - EOK - request processed without errors
+	 * - ENOTSUP - this indicates invalid USB driver
+	 * Parameters of the answer:
+	 * - devman handle of HC caller is physically connected to
+	 */
+	IPC_M_USB_GET_HOST_CONTROLLER_HANDLE
+} usb_iface_funcs_t;
+
+/** USB device communication interface. */
+typedef struct {
+	int (*get_address)(ddf_fun_t *, devman_handle_t, usb_address_t *);
+	int (*get_interface)(ddf_fun_t *, devman_handle_t, int *);
+	int (*get_hc_handle)(ddf_fun_t *, devman_handle_t *);
+} usb_iface_t;
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/drv/include/usbhc_iface.h
===================================================================
--- uspace/lib/drv/include/usbhc_iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/include/usbhc_iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,244 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @addtogroup usb
+ * @{
+ */
+/** @file
+ * @brief USB host controller interface definition.
+ */
+
+#ifndef LIBDRV_USBHC_IFACE_H_
+#define LIBDRV_USBHC_IFACE_H_
+
+#include "ddf/driver.h"
+#include <usb/usb.h>
+#include <bool.h>
+
+
+/** IPC methods for communication with HC through DDF interface.
+ *
+ * Notes for async methods:
+ *
+ * Methods for sending data to device (OUT transactions)
+ * - e.g. IPC_M_USBHC_INTERRUPT_OUT -
+ * always use the same semantics:
+ * - first, IPC call with given method is made
+ *   - argument #1 is target address
+ *   - argument #2 is target endpoint
+ *   - argument #3 is max packet size of the endpoint
+ * - this call is immediately followed by IPC data write (from caller)
+ * - the initial call (and the whole transaction) is answer after the
+ *   transaction is scheduled by the HC and acknowledged by the device
+ *   or immediately after error is detected
+ * - the answer carries only the error code
+ *
+ * Methods for retrieving data from device (IN transactions)
+ * - e.g. IPC_M_USBHC_INTERRUPT_IN -
+ * also use the same semantics:
+ * - first, IPC call with given method is made
+ *   - argument #1 is target address
+ *   - argument #2 is target endpoint
+ * - this call is immediately followed by IPC data read (async version)
+ * - the call is not answered until the device returns some data (or until
+ *   error occurs)
+ *
+ * Some special methods (NO-DATA transactions) do not send any data. These
+ * might behave as both OUT or IN transactions because communication parts
+ * where actual buffers are exchanged are omitted.
+ **
+ * For all these methods, wrap functions exists. Important rule: functions
+ * for IN transactions have (as parameters) buffers where retrieved data
+ * will be stored. These buffers must be already allocated and shall not be
+ * touch until the transaction is completed
+ * (e.g. not before calling usb_wait_for() with appropriate handle).
+ * OUT transactions buffers can be freed immediately after call is dispatched
+ * (i.e. after return from wrapping function).
+ *
+ */
+typedef enum {
+	/** Asks for address assignment by host controller.
+	 * Answer:
+	 * - ELIMIT - host controller run out of address
+	 * - EOK - address assigned
+	 * Answer arguments:
+	 * - assigned address
+	 *
+	 * The address must be released by via IPC_M_USBHC_RELEASE_ADDRESS.
+	 */
+	IPC_M_USBHC_REQUEST_ADDRESS,
+
+	/** Bind USB address with devman handle.
+	 * Parameters:
+	 * - USB address
+	 * - devman handle
+	 * Answer:
+	 * - EOK - address binded
+	 * - ENOENT - address is not in use
+	 */
+	IPC_M_USBHC_BIND_ADDRESS,
+
+	/** Get handle binded with given USB address.
+	 * Parameters
+	 * - USB address
+	 * Answer:
+	 * - EOK - address binded, first parameter is the devman handle
+	 * - ENOENT - address is not in use at the moment
+	 */
+	IPC_M_USBHC_GET_HANDLE_BY_ADDRESS,
+
+	/** Release address in use.
+	 * Arguments:
+	 * - address to be released
+	 * Answer:
+	 * - ENOENT - address not in use
+	 * - EPERM - trying to release default USB address
+	 */
+	IPC_M_USBHC_RELEASE_ADDRESS,
+
+
+	/** Send interrupt data to device.
+	 * See explanation at usb_iface_funcs_t (OUT transaction).
+	 */
+	IPC_M_USBHC_INTERRUPT_OUT,
+
+	/** Get interrupt data from device.
+	 * See explanation at usb_iface_funcs_t (IN transaction).
+	 */
+	IPC_M_USBHC_INTERRUPT_IN,
+
+	/** Send bulk data to device.
+	 * See explanation at usb_iface_funcs_t (OUT transaction).
+	 */
+	IPC_M_USBHC_BULK_OUT,
+
+	/** Get bulk data from device.
+	 * See explanation at usb_iface_funcs_t (IN transaction).
+	 */
+	IPC_M_USBHC_BULK_IN,
+
+	/** Issue control WRITE transfer.
+	 * See explanation at usb_iface_funcs_t (OUT transaction) for
+	 * call parameters.
+	 * This call is immediately followed by two IPC data writes
+	 * from the caller (setup packet and actual data).
+	 */
+	IPC_M_USBHC_CONTROL_WRITE,
+
+	/** Issue control READ transfer.
+	 * See explanation at usb_iface_funcs_t (IN transaction) for
+	 * call parameters.
+	 * This call is immediately followed by IPC data write from the caller
+	 * (setup packet) and IPC data read (buffer that was read).
+	 */
+	IPC_M_USBHC_CONTROL_READ,
+
+	/** Register endpoint attributes at host controller.
+	 * This is used to reserve portion of USB bandwidth.
+	 * When speed is invalid, speed of the device is used.
+	 * Parameters:
+	 * - USB address + endpoint number
+	 *   - packed as ADDR << 16 + EP
+	 * - speed + transfer type + direction
+	 *   - packed as ( SPEED << 8 + TYPE ) << 8 + DIR
+	 * - maximum packet size + interval (in milliseconds)
+	 *   - packed as MPS << 16 + INT
+	 * Answer:
+	 * - EOK - reservation successful
+	 * - ELIMIT - not enough bandwidth to satisfy the request
+	 */
+	IPC_M_USBHC_REGISTER_ENDPOINT,
+
+	/** Revert endpoint registration.
+	 * Parameters:
+	 * - USB address
+	 * - endpoint number
+	 * - data direction
+	 * Answer:
+	 * - EOK - endpoint unregistered
+	 * - ENOENT - unknown endpoint
+	 */
+	IPC_M_USBHC_UNREGISTER_ENDPOINT
+} usbhc_iface_funcs_t;
+
+/** Callback for outgoing transfer. */
+typedef void (*usbhc_iface_transfer_out_callback_t)(ddf_fun_t *,
+    int, void *);
+
+/** Callback for incoming transfer. */
+typedef void (*usbhc_iface_transfer_in_callback_t)(ddf_fun_t *,
+    int, size_t, void *);
+
+
+/** Out transfer processing function prototype. */
+typedef int (*usbhc_iface_transfer_out_t)(ddf_fun_t *, usb_target_t,
+    void *, size_t,
+    usbhc_iface_transfer_out_callback_t, void *);
+
+/** Setup transfer processing function prototype. @deprecated */
+typedef usbhc_iface_transfer_out_t usbhc_iface_transfer_setup_t;
+
+/** In transfer processing function prototype. */
+typedef int (*usbhc_iface_transfer_in_t)(ddf_fun_t *, usb_target_t,
+    void *, size_t,
+    usbhc_iface_transfer_in_callback_t, void *);
+
+/** USB host controller communication interface. */
+typedef struct {
+	int (*request_address)(ddf_fun_t *, usb_speed_t, usb_address_t *);
+	int (*bind_address)(ddf_fun_t *, usb_address_t, devman_handle_t);
+	int (*find_by_address)(ddf_fun_t *, usb_address_t, devman_handle_t *);
+	int (*release_address)(ddf_fun_t *, usb_address_t);
+
+	int (*register_endpoint)(ddf_fun_t *,
+	    usb_address_t, usb_speed_t, usb_endpoint_t,
+	    usb_transfer_type_t, usb_direction_t, size_t, unsigned int);
+	int (*unregister_endpoint)(ddf_fun_t *, usb_address_t, usb_endpoint_t,
+	    usb_direction_t);
+
+	usbhc_iface_transfer_out_t interrupt_out;
+	usbhc_iface_transfer_in_t interrupt_in;
+
+	usbhc_iface_transfer_out_t bulk_out;
+	usbhc_iface_transfer_in_t bulk_in;
+
+	int (*control_write)(ddf_fun_t *, usb_target_t,
+	    void *, size_t, void *, size_t,
+	    usbhc_iface_transfer_out_callback_t, void *);
+
+	int (*control_read)(ddf_fun_t *, usb_target_t,
+	    void *, size_t, void *, size_t,
+	    usbhc_iface_transfer_in_callback_t, void *);
+} usbhc_iface_t;
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/drv/include/usbhid_iface.h
===================================================================
--- uspace/lib/drv/include/usbhid_iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/drv/include/usbhid_iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libdrv
+ * @{
+ */
+/** @file
+ * USB HID interface definition.
+ */
+
+#ifndef LIBDRV_USBHID_IFACE_H_
+#define LIBDRV_USBHID_IFACE_H_
+
+#include "ddf/driver.h"
+#include <usb/usb.h>
+
+/** IPC methods for USB HID device interface. */
+typedef enum {
+	/** Get number of events reported in single burst.
+	 * Parameters: none
+	 * Answer:
+	 * - Size of one report in bytes.
+	 */
+	IPC_M_USBHID_GET_EVENT_LENGTH,
+	/** Get single event from the HID device.
+	 * The word single refers to set of individual events that were
+	 * available at particular point in time.
+	 * Parameters:
+	 * - flags
+	 * The call is followed by data read expecting two concatenated
+	 * arrays.
+	 * Answer:
+	 * - EOK - events returned
+	 * - EAGAIN - no event ready (only in non-blocking mode)
+	 *
+	 * It is okay if the client requests less data. Extra data must
+	 * be truncated by the driver.
+	 *
+	 * @todo Change this comment.
+	 */
+	IPC_M_USBHID_GET_EVENT,
+	
+	/** Get the size of the report descriptor from the HID device.
+	 *
+	 * Parameters:
+	 * - none
+	 * Answer:
+	 * - EOK - method is implemented (expected always)
+	 * Parameters of the answer:
+	 * - Size of the report in bytes.
+	 */
+	IPC_M_USBHID_GET_REPORT_DESCRIPTOR_LENGTH,
+	
+	/** Get the report descriptor from the HID device.
+	 *
+	 * Parameters:
+	 * - none
+	 * The call is followed by data read expecting the descriptor itself.
+	 * Answer:
+	 * - EOK - report descriptor returned.
+	 */
+	IPC_M_USBHID_GET_REPORT_DESCRIPTOR
+} usbhid_iface_funcs_t;
+
+/** USB HID interface flag - return immediately if no data are available. */
+#define USBHID_IFACE_FLAG_NON_BLOCKING (1 << 0)
+
+/** USB HID device communication interface. */
+typedef struct {
+	/** Get size of the event in bytes.
+	 *
+	 * @param[in] fun DDF function answering the request.
+	 * @return Size of the event in bytes.
+	 */
+	size_t (*get_event_length)(ddf_fun_t *fun);
+
+	/** Get single event from the HID device.
+	 *
+	 * @param[in] fun DDF function answering the request.
+	 * @param[out] buffer Buffer with raw data from the device.
+	 * @param[out] act_size Actual number of returned events.
+	 * @param[in] flags Flags (see USBHID_IFACE_FLAG_*).
+	 * @return Error code.
+	 */
+	int (*get_event)(ddf_fun_t *fun, uint8_t *buffer, size_t size,
+	    size_t *act_size, int *event_nr, unsigned int flags);
+	
+	/** Get size of the report descriptor in bytes.
+	 *
+	 * @param[in] fun DDF function answering the request.
+	 * @return Size of the report descriptor in bytes.
+	 */
+	size_t (*get_report_descriptor_length)(ddf_fun_t *fun);
+	
+	/** Get the report descriptor from the HID device.
+	 *
+	 * @param[in] fun DDF function answering the request.
+	 * @param[out] desc Buffer with the report descriptor.
+	 * @param[in] size Size of the allocated @p desc buffer.
+	 * @param[out] act_size Actual size of the report descriptor returned.
+	 * @return Error code.
+	 */
+	int (*get_report_descriptor)(ddf_fun_t *fun, uint8_t *desc, 
+	    size_t size, size_t *act_size);
+} usbhid_iface_t;
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usb/Makefile
===================================================================
--- uspace/lib/usb/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,44 @@
+#
+# Copyright (c) 2010 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+LIBRARY = libusb
+EXTRA_CFLAGS += \
+	-I$(LIBDRV_PREFIX)/include \
+	-Iinclude
+
+SOURCES = \
+	src/class.c \
+	src/ddfiface.c \
+	src/debug.c \
+	src/dump.c \
+	src/hc.c \
+	src/resolve.c \
+	src/usb.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/lib/usb/include/usb/classes/classes.h
===================================================================
--- uspace/lib/usb/include/usb/classes/classes.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/include/usb/classes/classes.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * USB device classes (generic constants and functions).
+ */
+#ifndef LIBUSB_CLASSES_H_
+#define LIBUSB_CLASSES_H_
+
+/** USB device class. */
+typedef enum {
+	USB_CLASS_USE_INTERFACE = 0x00,
+	USB_CLASS_AUDIO = 0x01,
+	USB_CLASS_COMMUNICATIONS_CDC_CONTROL = 0x02,
+	USB_CLASS_HID = 0x03,
+	USB_CLASS_PHYSICAL = 0x05,
+	USB_CLASS_IMAGE = 0x06,
+	USB_CLASS_PRINTER = 0x07,
+	USB_CLASS_MASS_STORAGE = 0x08,
+	USB_CLASS_HUB = 0x09,
+	USB_CLASS_CDC_DATA = 0x0A,
+	USB_CLASS_SMART_CARD = 0x0B,
+	USB_CLASS_CONTENT_SECURITY = 0x0D,
+	USB_CLASS_VIDEO = 0x0E,
+	USB_CLASS_PERSONAL_HEALTHCARE = 0x0F,
+	USB_CLASS_DIAGNOSTIC = 0xDC,
+	USB_CLASS_WIRELESS_CONTROLLER = 0xE0,
+	USB_CLASS_MISCELLANEOUS = 0xEF,
+	USB_CLASS_APPLICATION_SPECIFIC = 0xFE,
+	USB_CLASS_VENDOR_SPECIFIC = 0xFF,
+	/* USB_CLASS_ = 0x, */
+} usb_class_t;
+
+const char *usb_str_class(usb_class_t);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usb/include/usb/classes/hub.h
===================================================================
--- uspace/lib/usb/include/usb/classes/hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/include/usb/classes/hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,225 @@
+/*
+ * Copyright (c) 2010 Matus Dekanek
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * @brief USB hub related structures.
+ */
+#ifndef LIBUSB_CLASS_HUB_H_
+#define LIBUSB_CLASS_HUB_H_
+
+#include <sys/types.h>
+
+/** Hub class feature selector.
+ * @warning The constants are not unique (feature selectors are used
+ * for hub and port).
+ */
+typedef enum {
+	USB_HUB_FEATURE_HUB_LOCAL_POWER = 0,
+	USB_HUB_FEATURE_HUB_OVER_CURRENT = 1,
+	USB_HUB_FEATURE_C_HUB_LOCAL_POWER = 0,
+	USB_HUB_FEATURE_C_HUB_OVER_CURRENT = 1,
+	USB_HUB_FEATURE_PORT_CONNECTION = 0,
+	USB_HUB_FEATURE_PORT_ENABLE = 1,
+	USB_HUB_FEATURE_PORT_SUSPEND = 2,
+	USB_HUB_FEATURE_PORT_OVER_CURRENT = 3,
+	USB_HUB_FEATURE_PORT_RESET = 4,
+	USB_HUB_FEATURE_PORT_POWER = 8,
+	USB_HUB_FEATURE_PORT_LOW_SPEED = 9,
+	USB_HUB_FEATURE_C_PORT_CONNECTION = 16,
+	USB_HUB_FEATURE_C_PORT_ENABLE = 17,
+	USB_HUB_FEATURE_C_PORT_SUSPEND = 18,
+	USB_HUB_FEATURE_C_PORT_OVER_CURRENT = 19,
+	USB_HUB_FEATURE_C_PORT_RESET = 20,
+	/* USB_HUB_FEATURE_ = , */
+} usb_hub_class_feature_t;
+
+
+/** Header of standard hub descriptor without the "variadic" part. */
+typedef struct {
+	/** Descriptor length. */
+	uint8_t length;
+	/** Descriptor type (0x29). */
+	uint8_t descriptor_type;
+	/** Number of downstream ports. */
+	uint8_t port_count;
+	/** Characteristics bitmask. */
+	uint16_t characteristics;
+	/** Time from power-on to stabilization of current on the port. */
+	uint8_t power_good_time;
+	/** Maximum current requirements in mA. */
+	uint8_t max_current;
+} __attribute__ ((packed)) usb_hub_descriptor_header_t;
+
+/**
+ *	@brief usb hub descriptor
+ *
+ *	For more information see Universal Serial Bus Specification Revision 1.1 chapter 11.16.2
+ */
+typedef struct usb_hub_descriptor_type {
+    /** Number of bytes in this descriptor, including this byte */
+    //uint8_t bDescLength;
+
+    /** Descriptor Type, value: 29H for hub descriptor */
+    //uint8_t bDescriptorType;
+
+    /** Number of downstream ports that this hub supports */
+    uint8_t ports_count;
+
+    /**
+            D1...D0: Logical Power Switching Mode
+            00: Ganged power switching (all ports power at
+            once)
+            01: Individual port power switching
+            1X: Reserved. Used only on 1.0 compliant hubs
+            that implement no power switching.
+            D2: Identifies a Compound Device
+            0: Hub is not part of a compound device
+            1: Hub is part of a compound device
+            D4...D3: Over-current Protection Mode
+            00: Global Over-current Protection. The hub
+            reports over-current as a summation of all
+            ports current draw, without a breakdown of
+            individual port over-current status.
+            01: Individual Port Over-current Protection. The
+            hub reports over-current on a per-port basis.
+            Each port has an over-current indicator.
+            1X: No Over-current Protection. This option is
+            allowed only for bus-powered hubs that do not
+            implement over-current protection.
+            D15...D5:
+            Reserved
+     */
+    uint16_t hub_characteristics;
+
+    /**
+            Time (in 2ms intervals) from the time the power-on
+            sequence begins on a port until power is good on that
+            port. The USB System Software uses this value to
+            determine how long to wait before accessing a
+            powered-on port.
+     */
+    uint8_t pwr_on_2_good_time;
+
+    /**
+            Maximum current requirements of the Hub Controller
+            electronics in mA.
+     */
+    uint8_t current_requirement;
+
+    /**
+            Indicates if a port has a removable device attached.
+            This field is reported on byte-granularity. Within a
+            byte, if no port exists for a given location, the field
+            representing the port characteristics returns 0.
+            Bit value definition:
+            0B - Device is removable
+            1B - Device is non-removable
+            This is a bitmap corresponding to the individual ports
+            on the hub:
+            Bit 0: Reserved for future use
+            Bit 1: Port 1
+            Bit 2: Port 2
+            ....
+            Bit n: Port n (implementation-dependent, up to a
+            maximum of 255 ports).
+     */
+    uint8_t devices_removable[32];
+
+    /**
+            This field exists for reasons of compatibility with
+            software written for 1.0 compliant devices. All bits in
+            this field should be set to 1B. This field has one bit for
+            each port on the hub with additional pad bits, if
+            necessary, to make the number of bits in the field an
+            integer multiple of 8.
+     */
+    //uint8_t * port_pwr_ctrl_mask;
+} usb_hub_descriptor_t;
+
+
+
+/**	@brief usb hub specific request types.
+ *
+ *	For more information see Universal Serial Bus Specification Revision 1.1 chapter 11.16.2
+ */
+typedef enum {
+    /**	This request resets a value reported in the hub status.	*/
+    USB_HUB_REQ_TYPE_CLEAR_HUB_FEATURE = 0x20,
+    /** This request resets a value reported in the port status. */
+    USB_HUB_REQ_TYPE_CLEAR_PORT_FEATURE = 0x23,
+    /** This is an optional per-port diagnostic request that returns the bus state value, as sampled at the last EOF2 point. */
+    USB_HUB_REQ_TYPE_GET_STATE = 0xA3,
+    /** This request returns the hub descriptor. */
+    USB_HUB_REQ_TYPE_GET_DESCRIPTOR = 0xA0,
+    /** This request returns the current hub status and the states that have changed since the previous acknowledgment. */
+    USB_HUB_REQ_TYPE_GET_HUB_STATUS = 0xA0,
+    /** This request returns the current port status and the current value of the port status change bits. */
+    USB_HUB_REQ_TYPE_GET_PORT_STATUS = 0xA3,
+    /** This request overwrites the hub descriptor. */
+    USB_HUB_REQ_TYPE_SET_DESCRIPTOR = 0x20,
+    /** This request sets a value reported in the hub status. */
+    USB_HUB_REQ_TYPE_SET_HUB_FEATURE = 0x20,
+    /** This request sets a value reported in the port status. */
+    USB_HUB_REQ_TYPE_SET_PORT_FEATURE = 0x23
+} usb_hub_bm_request_type_t;
+
+/** @brief hub class request codes*/
+/// \TODO these are duplicit to standart descriptors
+typedef enum {
+    /**  */
+    USB_HUB_REQUEST_GET_STATUS = 0,
+    /** */
+    USB_HUB_REQUEST_CLEAR_FEATURE = 1,
+    /** */
+    USB_HUB_REQUEST_GET_STATE = 2,
+    /** */
+    USB_HUB_REQUEST_SET_FEATURE = 3,
+    /** */
+    USB_HUB_REQUEST_GET_DESCRIPTOR = 6,
+    /** */
+    USB_HUB_REQUEST_SET_DESCRIPTOR = 7
+} usb_hub_request_t;
+
+/**
+ *	Maximum size of usb hub descriptor in bytes
+ */
+extern size_t USB_HUB_MAX_DESCRIPTOR_SIZE;
+
+
+
+
+
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usb/include/usb/classes/massstor.h
===================================================================
--- uspace/lib/usb/include/usb/classes/massstor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/include/usb/classes/massstor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * USB mass storage related functions and constants.
+ */
+#ifndef LIBUSB_CLASS_MASSSTOR_H_
+#define LIBUSB_CLASS_MASSSTOR_H_
+
+#include <sys/types.h>
+
+/** USB mass storage subclasses. */
+typedef enum {
+	USB_MASSSTOR_SUBCLASS_RBC = 0x01,
+	/** Also known as MMC-5. */
+	USB_MASSSTOR_SUBCLASS_ATAPI = 0x02,
+	USB_MASSSTOR_SUBCLASS_UFI = 0x04,
+	USB_MASSSTOR_SUBCLASS_SCSI = 0x06,
+	USB_MASSSTOR_SUBCLASS_LSDFS = 0x07,
+	USB_MASSSTOR_SUBCLASS_IEEE1667 = 0x08,
+	USB_MASSSTOR_SUBCLASS_VENDOR = 0xFF
+} usb_massstor_subclass_t;
+
+/** USB mass storage interface protocols. */
+typedef enum {
+	/** CBI transport with command completion interrupt. */
+	USB_MASSSTOR_PROTOCOL_CBI_CC = 0x00,
+	/** CBI transport with no command completion interrupt. */
+	USB_MASSSTOR_PROTOCOL_CBI = 0x01,
+	/** Bulk only transport. */
+	USB_MASSSTOR_PROTOCOL_BBB = 0x50,
+	/** USB attached SCSI. */
+	USB_MASSSTOR_PROTOCOL_UAS = 0x62,
+	USB_MASSSTOR_PROTOCOL_VENDOR = 0xFF
+} usb_massstor_protocol_t;
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usb/include/usb/ddfiface.h
===================================================================
--- uspace/lib/usb/include/usb/ddfiface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/include/usb/ddfiface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * Implementations of DDF interfaces functions.
+ */
+#ifndef LIBUSB_DDFIFACE_H_
+#define LIBUSB_DDFIFACE_H_
+
+#include <sys/types.h>
+#include <usb_iface.h>
+
+int usb_iface_get_hc_handle_hub_impl(ddf_fun_t *, devman_handle_t *);
+int usb_iface_get_address_hub_impl(ddf_fun_t *, devman_handle_t,
+    usb_address_t *);
+extern usb_iface_t usb_iface_hub_impl;
+
+int usb_iface_get_hc_handle_hub_child_impl(ddf_fun_t *, devman_handle_t *);
+int usb_iface_get_address_hub_child_impl(ddf_fun_t *, devman_handle_t,
+    usb_address_t *);
+extern usb_iface_t usb_iface_hub_child_impl;
+
+int usb_iface_get_hc_handle_hc_impl(ddf_fun_t *, devman_handle_t *);
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usb/include/usb/debug.h
===================================================================
--- uspace/lib/usb/include/usb/debug.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/include/usb/debug.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2010-2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * Debugging related functions.
+ */
+#ifndef LIBUSB_DEBUG_H_
+#define LIBUSB_DEBUG_H_
+#include <stdio.h>
+#include <inttypes.h>
+#include <usb/usb.h>
+#include <assert.h>
+
+void usb_dump_standard_descriptor(FILE *, const char *, const char *,
+    const uint8_t *, size_t);
+
+/** Logging level. */
+typedef enum {
+	/** Fatal, unrecoverable, error.
+	 * Such error prevents the driver from working at all.
+	 */
+	USB_LOG_LEVEL_FATAL,
+
+	/** Serious but recoverable error
+	 * Shall be used for errors fatal for single device but not for
+	 * driver itself.
+	 */
+	USB_LOG_LEVEL_ERROR,
+
+	/** Warning.
+	 * Problems from which the driver is able to recover gracefully.
+	 */
+	USB_LOG_LEVEL_WARNING,
+
+	/** Information message.
+	 * This should be the last level that is printed by default to
+	 * the screen.
+	 * Typical usage is to inform that new device was found and what
+	 * are its capabilities.
+	 * Do not use for repetitive actions (such as device polling).
+	 */
+	USB_LOG_LEVEL_INFO,
+
+	/** Debugging message. */
+	USB_LOG_LEVEL_DEBUG,
+
+	/** More detailed debugging message. */
+	USB_LOG_LEVEL_DEBUG2,
+
+	/** Terminating constant for logging levels. */
+	USB_LOG_LEVEL_MAX
+} usb_log_level_t;
+
+/** Default log level. */
+#ifdef CONFIG_USB_RELEASE_BUILD
+#  define USB_LOG_LEVEL_DEFAULT USB_LOG_LEVEL_INFO
+#else
+#  define USB_LOG_LEVEL_DEFAULT USB_LOG_LEVEL_DEBUG
+#endif
+
+void usb_log_enable(usb_log_level_t, const char *);
+
+void usb_log_printf(usb_log_level_t, const char *, ...)
+	PRINTF_ATTRIBUTE(2, 3);
+
+/** Log fatal error. */
+#define usb_log_fatal(format, ...) \
+	usb_log_printf(USB_LOG_LEVEL_FATAL, format, ##__VA_ARGS__)
+
+/** Log normal (recoverable) error. */
+#define usb_log_error(format, ...) \
+	usb_log_printf(USB_LOG_LEVEL_ERROR, format, ##__VA_ARGS__)
+
+/** Log warning. */
+#define usb_log_warning(format, ...) \
+	usb_log_printf(USB_LOG_LEVEL_WARNING, format, ##__VA_ARGS__)
+
+/** Log informational message. */
+#define usb_log_info(format, ...) \
+	usb_log_printf(USB_LOG_LEVEL_INFO, format, ##__VA_ARGS__)
+
+/** Log debugging message. */
+#define usb_log_debug(format, ...) \
+	usb_log_printf(USB_LOG_LEVEL_DEBUG, format, ##__VA_ARGS__)
+
+/** Log verbose debugging message. */
+#define usb_log_debug2(format, ...) \
+	usb_log_printf(USB_LOG_LEVEL_DEBUG2, format, ##__VA_ARGS__)
+
+const char *usb_debug_str_buffer(const uint8_t *, size_t, size_t);
+
+
+#endif
+/**
+ * @}
+ */
+
Index: uspace/lib/usb/include/usb/descriptor.h
===================================================================
--- uspace/lib/usb/include/usb/descriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/include/usb/descriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,214 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * Standard USB descriptors.
+ */
+#ifndef LIBUSB_DESCRIPTOR_H_
+#define LIBUSB_DESCRIPTOR_H_
+
+#include <async.h>
+
+/** Descriptor type. */
+typedef enum {
+	USB_DESCTYPE_DEVICE = 1,
+	USB_DESCTYPE_CONFIGURATION = 2,
+	USB_DESCTYPE_STRING = 3,
+	USB_DESCTYPE_INTERFACE = 4,
+	USB_DESCTYPE_ENDPOINT = 5,
+	USB_DESCTYPE_HID = 0x21,
+	USB_DESCTYPE_HID_REPORT = 0x22,
+	USB_DESCTYPE_HID_PHYSICAL = 0x23,
+	USB_DESCTYPE_HUB = 0x29,
+	/* USB_DESCTYPE_ = */
+} usb_descriptor_type_t;
+
+/** Standard USB device descriptor.
+ */
+typedef struct {
+	/** Size of this descriptor in bytes. */
+	uint8_t length;
+	/** Descriptor type (USB_DESCTYPE_DEVICE). */
+	uint8_t descriptor_type;
+	/** USB specification release number.
+	 * The number shall be coded as binary-coded decimal (BCD).
+	 */
+	uint16_t usb_spec_version;
+	/** Device class. */
+	uint8_t device_class;
+	/** Device sub-class. */
+	uint8_t device_subclass;
+	/** Device protocol. */
+	uint8_t device_protocol;
+	/** Maximum packet size for endpoint zero.
+	 * Valid values are only 8, 16, 32, 64).
+	 */
+	uint8_t max_packet_size;
+	/** Vendor ID. */
+	uint16_t vendor_id;
+	/** Product ID. */
+	uint16_t product_id;
+	/** Device release number (in BCD). */
+	uint16_t device_version;
+	/** Manufacturer descriptor index. */
+	uint8_t str_manufacturer;
+	/** Product descriptor index. */
+	uint8_t str_product;
+	/** Device serial number descriptor index. */
+	uint8_t str_serial_number;
+	/** Number of possible configurations. */
+	uint8_t configuration_count;
+} __attribute__ ((packed)) usb_standard_device_descriptor_t;
+
+/** Standard USB configuration descriptor.
+ */
+typedef struct {
+	/** Size of this descriptor in bytes. */
+	uint8_t length;
+	/** Descriptor type (USB_DESCTYPE_CONFIGURATION). */
+	uint8_t descriptor_type;
+	/** Total length of all data of this configuration.
+	 * This includes the combined length of all descriptors
+	 * (configuration, interface, endpoint, class-specific and
+	 * vendor-specific) valid for this configuration.
+	 */
+	uint16_t total_length;
+	/** Number of possible interfaces under this configuration. */
+	uint8_t interface_count;
+	/** Configuration value used when setting this configuration. */
+	uint8_t configuration_number;
+	/** String descriptor describing this configuration. */
+	uint8_t str_configuration;
+	/** Attribute bitmap. */
+	uint8_t attributes;
+	/** Maximum power consumption from the USB under this configuration.
+	 * Expressed in 2mA unit (e.g. 50 ~ 100mA).
+	 */
+	uint8_t max_power;
+} __attribute__ ((packed)) usb_standard_configuration_descriptor_t;
+
+/** Standard USB interface descriptor.
+ */
+typedef struct {
+	/** Size of this descriptor in bytes. */
+	uint8_t length;
+	/** Descriptor type (USB_DESCTYPE_INTERFACE). */
+	uint8_t descriptor_type;
+	/** Number of interface.
+	 * Zero-based index into array of interfaces for current configuration.
+	 */
+	uint8_t interface_number;
+	/** Alternate setting for value in interface_number. */
+	uint8_t alternate_setting;
+	/** Number of endpoints used by this interface.
+	 * This number must exclude usage of endpoint zero
+	 * (default control pipe).
+	 */
+	uint8_t endpoint_count;
+	/** Class code. */
+	uint8_t interface_class;
+	/** Subclass code. */
+	uint8_t interface_subclass;
+	/** Protocol code. */
+	uint8_t interface_protocol;
+	/** String descriptor describing this interface. */
+	uint8_t str_interface;
+} __attribute__ ((packed)) usb_standard_interface_descriptor_t;
+
+/** Standard USB endpoint descriptor.
+ */
+typedef struct {
+	/** Size of this descriptor in bytes. */
+	uint8_t length;
+	/** Descriptor type (USB_DESCTYPE_ENDPOINT). */
+	uint8_t descriptor_type;
+	/** Endpoint address together with data flow direction. */
+	uint8_t endpoint_address;
+	/** Endpoint attributes.
+	 * Includes transfer type (usb_transfer_type_t).
+	 */
+	uint8_t attributes;
+	/** Maximum packet size. */
+	uint16_t max_packet_size;
+	/** Polling interval in milliseconds.
+	 * Ignored for bulk and control endpoints.
+	 * Isochronous endpoints must use value 1.
+	 * Interrupt endpoints any value from 1 to 255.
+	 */
+	uint8_t poll_interval;
+} __attribute__ ((packed)) usb_standard_endpoint_descriptor_t;
+
+/** Part of standard USB HID descriptor specifying one class descriptor.
+ *
+ * (See HID Specification, p.22)
+ */
+typedef struct {
+	/** Type of class-specific descriptor (Report or Physical). */
+	uint8_t type;
+	/** Length of class-specific descriptor in bytes. */
+	uint16_t length;
+} __attribute__ ((packed)) usb_standard_hid_class_descriptor_info_t;
+
+/** Standard USB HID descriptor.
+ *
+ * (See HID Specification, p.22)
+ *
+ * It is actually only the "header" of the descriptor, it does not contain
+ * the last two mandatory fields (type and length of the first class-specific
+ * descriptor).
+ */
+typedef struct {
+	/** Total size of this descriptor in bytes.
+	 *
+	 * This includes all class-specific descriptor info - type + length
+	 * for each descriptor.
+	 */
+	uint8_t length;
+	/** Descriptor type (USB_DESCTYPE_HID). */
+	uint8_t descriptor_type;
+	/** HID Class Specification release. */
+	uint16_t spec_release;
+	/** Country code of localized hardware. */
+	uint8_t country_code;
+	/** Total number of class-specific (i.e. Report and Physical)
+	 * descriptors.
+	 *
+	 * @note There is always only one Report descriptor.
+	 */
+	uint8_t class_desc_count;
+	/** First mandatory class descriptor (Report) info. */
+	usb_standard_hid_class_descriptor_info_t report_desc_info;
+} __attribute__ ((packed)) usb_standard_hid_descriptor_t;
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usb/include/usb/hc.h
===================================================================
--- uspace/lib/usb/include/usb/hc.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/include/usb/hc.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * General communication with host controller driver.
+ */
+#ifndef LIBUSB_HC_H_
+#define LIBUSB_HC_H_
+
+#include <sys/types.h>
+#include <ipc/devman.h>
+#include <ddf/driver.h>
+#include <bool.h>
+#include <usb/usb.h>
+
+/** Connection to the host controller driver. */
+typedef struct {
+	/** Devman handle of the host controller. */
+	devman_handle_t hc_handle;
+	/** Phone to the host controller. */
+	int hc_phone;
+} usb_hc_connection_t;
+
+int usb_hc_connection_initialize_from_device(usb_hc_connection_t *,
+    ddf_dev_t *);
+int usb_hc_connection_initialize(usb_hc_connection_t *, devman_handle_t);
+
+int usb_hc_connection_open(usb_hc_connection_t *);
+bool usb_hc_connection_is_opened(const usb_hc_connection_t *);
+int usb_hc_connection_close(usb_hc_connection_t *);
+int usb_hc_get_handle_by_address(usb_hc_connection_t *, usb_address_t,
+    devman_handle_t *);
+
+int usb_hc_get_address_by_handle(devman_handle_t);
+
+int usb_hc_find(devman_handle_t, devman_handle_t *);
+
+int usb_resolve_device_handle(const char *, devman_handle_t *, usb_address_t *,
+    devman_handle_t *);
+
+int usb_ddf_get_hc_handle_by_class(size_t, devman_handle_t *);
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usb/include/usb/usb.h
===================================================================
--- uspace/lib/usb/include/usb/usb.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/include/usb/usb.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,180 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * Common USB types and functions.
+ */
+#ifndef LIBUSB_USB_H_
+#define LIBUSB_USB_H_
+
+#include <sys/types.h>
+#include <byteorder.h>
+
+/** Convert 16bit value from native (host) endianness to USB endianness. */
+#define uint16_host2usb(n) host2uint16_t_le((n))
+
+/** Convert 32bit value from native (host) endianness to USB endianness. */
+#define uint32_host2usb(n) host2uint32_t_le((n))
+
+/** Convert 16bit value from USB endianness into native (host) one. */
+#define uint16_usb2host(n) uint16_t_le2host((n))
+
+/** Convert 32bit value from USB endianness into native (host) one. */
+#define uint32_usb2host(n) uint32_t_le2host((n))
+
+
+/** USB transfer type. */
+typedef enum {
+	USB_TRANSFER_CONTROL = 0,
+	USB_TRANSFER_ISOCHRONOUS = 1,
+	USB_TRANSFER_BULK = 2,
+	USB_TRANSFER_INTERRUPT = 3
+} usb_transfer_type_t;
+
+const char * usb_str_transfer_type(usb_transfer_type_t t);
+const char * usb_str_transfer_type_short(usb_transfer_type_t t);
+
+/** USB data transfer direction. */
+typedef enum {
+	USB_DIRECTION_IN,
+	USB_DIRECTION_OUT,
+	USB_DIRECTION_BOTH
+} usb_direction_t;
+
+/** USB speeds. */
+typedef enum {
+	/** USB 1.1 low speed (1.5Mbits/s). */
+	USB_SPEED_LOW,
+	/** USB 1.1 full speed (12Mbits/s). */
+	USB_SPEED_FULL,
+	/** USB 2.0 high speed (480Mbits/s). */
+	USB_SPEED_HIGH,
+	/** Psuedo-speed serving as a boundary. */
+	USB_SPEED_MAX
+} usb_speed_t;
+
+const char *usb_str_speed(usb_speed_t);
+
+
+/** USB request type target. */
+typedef enum {
+	USB_REQUEST_TYPE_STANDARD = 0,
+	USB_REQUEST_TYPE_CLASS = 1,
+	USB_REQUEST_TYPE_VENDOR = 2
+} usb_request_type_t;
+
+/** USB request recipient. */
+typedef enum {
+	USB_REQUEST_RECIPIENT_DEVICE = 0,
+	USB_REQUEST_RECIPIENT_INTERFACE = 1,
+	USB_REQUEST_RECIPIENT_ENDPOINT = 2,
+	USB_REQUEST_RECIPIENT_OTHER = 3
+} usb_request_recipient_t;
+
+/** USB address type.
+ * Negative values could be used to indicate error.
+ */
+typedef int usb_address_t;
+
+/** Default USB address. */
+#define USB_ADDRESS_DEFAULT 0
+/** Maximum address number in USB 1.1. */
+#define USB11_ADDRESS_MAX 128
+
+/** USB endpoint number type.
+ * Negative values could be used to indicate error.
+ */
+typedef int usb_endpoint_t;
+
+/** Maximum endpoint number in USB 1.1.
+ */
+#define USB11_ENDPOINT_MAX 16
+
+
+/** USB complete address type. 
+ * Pair address + endpoint is identification of transaction recipient.
+ */
+typedef struct {
+	usb_address_t address;
+	usb_endpoint_t endpoint;
+} usb_target_t;
+
+/** Compare USB targets (addresses and endpoints).
+ *
+ * @param a First target.
+ * @param b Second target.
+ * @return Whether @p a and @p b points to the same pipe on the same device.
+ */
+static inline int usb_target_same(usb_target_t a, usb_target_t b)
+{
+	return (a.address == b.address)
+	    && (a.endpoint == b.endpoint);
+}
+
+/** General handle type.
+ * Used by various USB functions as opaque handle.
+ */
+typedef sysarg_t usb_handle_t;
+
+/** USB packet identifier. */
+typedef enum {
+#define _MAKE_PID_NIBBLE(tag, type) \
+	((uint8_t)(((tag) << 2) | (type)))
+#define _MAKE_PID(tag, type) \
+	( \
+	    _MAKE_PID_NIBBLE(tag, type) \
+	    | ((~_MAKE_PID_NIBBLE(tag, type)) << 4) \
+	)
+	USB_PID_OUT = _MAKE_PID(0, 1),
+	USB_PID_IN = _MAKE_PID(2, 1),
+	USB_PID_SOF = _MAKE_PID(1, 1),
+	USB_PID_SETUP = _MAKE_PID(3, 1),
+
+	USB_PID_DATA0 = _MAKE_PID(0 ,3),
+	USB_PID_DATA1 = _MAKE_PID(2 ,3),
+
+	USB_PID_ACK = _MAKE_PID(0 ,2),
+	USB_PID_NAK = _MAKE_PID(2 ,2),
+	USB_PID_STALL = _MAKE_PID(3 ,2),
+
+	USB_PID_PRE = _MAKE_PID(3 ,0),
+	/* USB_PID_ = _MAKE_PID( ,), */
+#undef _MAKE_PID
+#undef _MAKE_PID_NIBBLE
+} usb_packet_id;
+
+/** Class name for USB host controllers. */
+#define USB_HC_DDF_CLASS_NAME "usbhc"
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usb/src/class.c
===================================================================
--- uspace/lib/usb/src/class.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/src/class.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * @brief Class related functions.
+ */
+#include <usb/classes/classes.h>
+#include <errno.h>
+
+/** Tell string representation of USB class.
+ *
+ * @param cls Class code.
+ * @return String representation.
+ */
+const char *usb_str_class(usb_class_t cls)
+{
+	switch (cls) {
+		case USB_CLASS_USE_INTERFACE:
+			return "use-interface";
+		case USB_CLASS_AUDIO:
+			return "audio";
+		case USB_CLASS_COMMUNICATIONS_CDC_CONTROL:
+			return "communications";
+		case USB_CLASS_HID:
+			return "HID";
+		case USB_CLASS_PHYSICAL:
+			return "physical";
+		case USB_CLASS_IMAGE:
+			return "image";
+		case USB_CLASS_PRINTER:
+			return "printer";
+		case USB_CLASS_MASS_STORAGE:
+			return "mass-storage";
+		case USB_CLASS_HUB:
+			return "hub";
+		case USB_CLASS_CDC_DATA:
+			return "CDC";
+		case USB_CLASS_SMART_CARD:
+			return "smart-card";
+		case USB_CLASS_CONTENT_SECURITY:
+			return "security";
+		case USB_CLASS_VIDEO:
+			return "video";
+		case USB_CLASS_PERSONAL_HEALTHCARE:
+			return "healthcare";
+		case USB_CLASS_DIAGNOSTIC:
+			return "diagnostic";
+		case USB_CLASS_WIRELESS_CONTROLLER:
+			return "wireless";
+		case USB_CLASS_MISCELLANEOUS:
+			return "misc";
+		case USB_CLASS_APPLICATION_SPECIFIC:
+			return "application";
+		case USB_CLASS_VENDOR_SPECIFIC:
+			return "vendor";
+		default:
+			return "unknown";
+	}
+}
+
+
+/**
+ * @}
+ */
Index: uspace/lib/usb/src/ddfiface.c
===================================================================
--- uspace/lib/usb/src/ddfiface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/src/ddfiface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,172 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * Implementations of DDF interfaces functions (actual implementation).
+ */
+#include <ipc/devman.h>
+#include <devman.h>
+#include <async.h>
+#include <usb/ddfiface.h>
+#include <usb/hc.h>
+#include <usb/debug.h>
+#include <errno.h>
+#include <assert.h>
+
+/** DDF interface for USB device, implementation for typical hub. */
+usb_iface_t  usb_iface_hub_impl = {
+	.get_hc_handle = usb_iface_get_hc_handle_hub_impl,
+	.get_address = usb_iface_get_address_hub_impl
+};
+
+/** DDF interface for USB device, implementation for child of a typical hub. */
+usb_iface_t  usb_iface_hub_child_impl = {
+	.get_hc_handle = usb_iface_get_hc_handle_hub_child_impl,
+	.get_address = usb_iface_get_address_hub_child_impl
+};
+
+
+/** Get host controller handle, interface implementation for hub driver.
+ *
+ * @param[in] fun Device function the operation is running on.
+ * @param[out] handle Storage for the host controller handle.
+ * @return Error code.
+ */
+int usb_iface_get_hc_handle_hub_impl(ddf_fun_t *fun, devman_handle_t *handle)
+{
+	assert(fun);
+	return usb_hc_find(fun->handle, handle);
+}
+
+/** Get host controller handle, interface implementation for child of
+ * a hub driver.
+ *
+ * @param[in] fun Device function the operation is running on.
+ * @param[out] handle Storage for the host controller handle.
+ * @return Error code.
+ */
+int usb_iface_get_hc_handle_hub_child_impl(ddf_fun_t *fun,
+    devman_handle_t *handle)
+{
+	assert(fun != NULL);
+
+	int parent_phone = devman_parent_device_connect(fun->handle,
+	    IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+	sysarg_t hc_handle;
+	int rc = async_req_1_1(parent_phone, DEV_IFACE_ID(USB_DEV_IFACE),
+	    IPC_M_USB_GET_HOST_CONTROLLER_HANDLE, &hc_handle);
+
+	async_hangup(parent_phone);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	*handle = hc_handle;
+
+	return EOK;
+}
+
+/** Get host controller handle, interface implementation for HC driver.
+ *
+ * @param[in] fun Device function the operation is running on.
+ * @param[out] handle Storage for the host controller handle.
+ * @return Always EOK.
+ */
+int usb_iface_get_hc_handle_hc_impl(ddf_fun_t *fun, devman_handle_t *handle)
+{
+	assert(fun);
+
+	if (handle != NULL) {
+		*handle = fun->handle;
+	}
+
+	return EOK;
+}
+
+/** Get USB device address, interface implementation for hub driver.
+ *
+ * @param[in] fun Device function the operation is running on.
+ * @param[in] handle Devman handle of USB device we want address of.
+ * @param[out] address Storage for USB address of device with handle @p handle.
+ * @return Error code.
+ */
+int usb_iface_get_address_hub_impl(ddf_fun_t *fun, devman_handle_t handle,
+    usb_address_t *address)
+{
+	assert(fun);
+	int parent_phone = devman_parent_device_connect(fun->handle,
+	    IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+	sysarg_t addr;
+	int rc = async_req_2_1(parent_phone, DEV_IFACE_ID(USB_DEV_IFACE),
+	    IPC_M_USB_GET_ADDRESS, handle, &addr);
+
+	async_hangup(parent_phone);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	if (address != NULL) {
+		*address = (usb_address_t) addr;
+	}
+
+	return EOK;
+}
+
+/** Get USB device address, interface implementation for child of
+ * a hub driver.
+ *
+ * @param[in] fun Device function the operation is running on.
+ * @param[in] handle Devman handle of USB device we want address of.
+ * @param[out] address Storage for USB address of device with handle @p handle.
+ * @return Error code.
+ */
+int usb_iface_get_address_hub_child_impl(ddf_fun_t *fun,
+    devman_handle_t handle, usb_address_t *address)
+{
+	if (handle == 0) {
+		handle = fun->handle;
+	}
+	return usb_iface_get_address_hub_impl(fun, handle, address);
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usb/src/debug.c
===================================================================
--- uspace/lib/usb/src/debug.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/src/debug.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,268 @@
+/*
+ * Copyright (c) 2010-2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * Debugging and logging support.
+ */
+#include <adt/list.h>
+#include <fibril_synch.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <usb/debug.h>
+
+/** Level of logging messages. */
+static usb_log_level_t log_level = USB_LOG_LEVEL_WARNING;
+
+/** Prefix for logging messages. */
+static const char *log_prefix = "usb";
+
+/** Serialization mutex for logging functions. */
+static FIBRIL_MUTEX_INITIALIZE(log_serializer);
+
+/** File where to store the log. */
+static FILE *log_stream = NULL;
+
+
+/** Enable logging.
+ *
+ * @param level Maximal enabled level (including this one).
+ * @param message_prefix Prefix for each printed message.
+ */
+void usb_log_enable(usb_log_level_t level, const char *message_prefix)
+{
+	log_prefix = message_prefix;
+	log_level = level;
+	if (log_stream == NULL) {
+		char *fname;
+		int rc = asprintf(&fname, "/log/%s", message_prefix);
+		if (rc > 0) {
+			log_stream = fopen(fname, "w");
+			free(fname);
+		}
+	}
+}
+
+/** Get log level name prefix.
+ *
+ * @param level Log level.
+ * @return String prefix for the message.
+ */
+static const char *log_level_name(usb_log_level_t level)
+{
+	switch (level) {
+		case USB_LOG_LEVEL_FATAL:
+			return " FATAL";
+		case USB_LOG_LEVEL_ERROR:
+			return " ERROR";
+		case USB_LOG_LEVEL_WARNING:
+			return " WARN";
+		case USB_LOG_LEVEL_INFO:
+			return " info";
+		default:
+			return "";
+	}
+}
+
+/** Print logging message.
+ *
+ * @param level Verbosity level of the message.
+ * @param format Formatting directive.
+ */
+void usb_log_printf(usb_log_level_t level, const char *format, ...)
+{
+	FILE *screen_stream = NULL;
+	switch (level) {
+		case USB_LOG_LEVEL_FATAL:
+		case USB_LOG_LEVEL_ERROR:
+			screen_stream = stderr;
+			break;
+		default:
+			screen_stream = stdout;
+			break;
+	}
+	assert(screen_stream != NULL);
+
+	va_list args;
+
+	/*
+	 * Serialize access to log files.
+	 * Print to screen only messages with higher level than the one
+	 * specified during logging initialization.
+	 * Print also to file, to it print one more (lower) level as well.
+	 */
+	fibril_mutex_lock(&log_serializer);
+
+	const char *level_name = log_level_name(level);
+
+	if ((log_stream != NULL) && (level <= log_level + 1)) {
+		va_start(args, format);
+
+		fprintf(log_stream, "[%s]%s: ", log_prefix, level_name);
+		vfprintf(log_stream, format, args);
+		fflush(log_stream);
+
+		va_end(args);
+	}
+
+	if (level <= log_level) {
+		va_start(args, format);
+
+		fprintf(screen_stream, "[%s]%s: ", log_prefix, level_name);
+		vfprintf(screen_stream, format, args);
+		fflush(screen_stream);
+
+		va_end(args);
+	}
+
+	fibril_mutex_unlock(&log_serializer);
+}
+
+
+#define REMAINDER_STR_FMT " (%zu)..."
+/* string + terminator + number width (enough for 4GB)*/
+#define REMAINDER_STR_LEN (5 + 1 + 10)
+
+/** How many bytes to group together. */
+#define BUFFER_DUMP_GROUP_SIZE 4
+
+/** Size of the string for buffer dumps. */
+#define BUFFER_DUMP_LEN 240 /* Ought to be enough for everybody ;-). */
+
+/** Fibril local storage for the dumped buffer. */
+static fibril_local char buffer_dump[2][BUFFER_DUMP_LEN];
+/** Fibril local storage for buffer switching. */
+static fibril_local int buffer_dump_index = 0;
+
+/** Dump buffer into string.
+ *
+ * The function dumps given buffer into hexadecimal format and stores it
+ * in a static fibril local string.
+ * That means that you do not have to deallocate the string (actually, you
+ * can not do that) and you do not have to guard it against concurrent
+ * calls to it.
+ * The only limitation is that each second call rewrites the buffer again
+ * (internally, two buffer are used in cyclic manner).
+ * Thus, it is necessary to copy the buffer elsewhere (that includes printing
+ * to screen or writing to file).
+ * Since this function is expected to be used for debugging prints only,
+ * that is not a big limitation.
+ *
+ * @warning You cannot use this function more than twice in the same printf
+ * (see detailed explanation).
+ *
+ * @param buffer Buffer to be printed (can be NULL).
+ * @param size Size of the buffer in bytes (can be zero).
+ * @param dumped_size How many bytes to actually dump (zero means all).
+ * @return Dumped buffer as a static (but fibril local) string.
+ */
+const char *usb_debug_str_buffer(const uint8_t *buffer, size_t size,
+    size_t dumped_size)
+{
+	/*
+	 * Remove previous string.
+	 */
+	bzero(buffer_dump[buffer_dump_index], BUFFER_DUMP_LEN);
+
+	if (buffer == NULL) {
+		return "(null)";
+	}
+	if (size == 0) {
+		return "(empty)";
+	}
+	if ((dumped_size == 0) || (dumped_size > size)) {
+		dumped_size = size;
+	}
+
+	/* How many bytes are available in the output buffer. */
+	size_t buffer_remaining_size = BUFFER_DUMP_LEN - 1 - REMAINDER_STR_LEN;
+	char *it = buffer_dump[buffer_dump_index];
+
+	size_t index = 0;
+
+	while (index < size) {
+		/* Determine space before the number. */
+		const char *space_before;
+		if (index == 0) {
+			space_before = "";
+		} else if ((index % BUFFER_DUMP_GROUP_SIZE) == 0) {
+			space_before = "  ";
+		} else {
+			space_before = " ";
+		}
+
+		/*
+		 * Add the byte as a hexadecimal number plus the space.
+		 * We do it into temporary buffer to ensure that always
+		 * the whole byte is printed.
+		 */
+		int val = buffer[index];
+		char current_byte[16];
+		int printed = snprintf(current_byte, 16,
+		    "%s%02x", space_before, val);
+		if (printed < 0) {
+			break;
+		}
+
+		if ((size_t) printed > buffer_remaining_size) {
+			break;
+		}
+
+		/* We can safely add 1, because space for end 0 is reserved. */
+		str_append(it, buffer_remaining_size + 1, current_byte);
+
+		buffer_remaining_size -= printed;
+		/* Point at the terminator 0. */
+		it += printed;
+		index++;
+
+		if (index >= dumped_size) {
+			break;
+		}
+	}
+
+	/* Add how many bytes were not printed. */
+	if (index < size) {
+		snprintf(it, REMAINDER_STR_LEN,
+		    REMAINDER_STR_FMT, size - index);
+	}
+
+	/* Next time, use the other buffer. */
+	buffer_dump_index = 1 - buffer_dump_index;
+
+	/* Need to take the old one due to previous line. */
+	return buffer_dump[1 - buffer_dump_index];
+}
+
+
+/**
+ * @}
+ */
Index: uspace/lib/usb/src/dump.c
===================================================================
--- uspace/lib/usb/src/dump.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/src/dump.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,291 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * Descriptor dumping.
+ */
+#include <adt/list.h>
+#include <fibril_synch.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <usb/debug.h>
+#include <usb/descriptor.h>
+#include <usb/classes/classes.h>
+
+/** Mapping between descriptor id and dumping function. */
+typedef struct {
+	/** Descriptor id. */
+	int id;
+	/** Dumping function. */
+	void (*dump)(FILE *, const char *, const char *,
+	    const uint8_t *, size_t);
+} descriptor_dump_t;
+
+static void usb_dump_descriptor_device(FILE *, const char *, const char *,
+    const uint8_t *, size_t);
+static void usb_dump_descriptor_configuration(FILE *, const char *, const char *,
+    const uint8_t *, size_t);
+static void usb_dump_descriptor_interface(FILE *, const char *, const char *,
+    const uint8_t *, size_t);
+static void usb_dump_descriptor_string(FILE *, const char *, const char *,
+    const uint8_t *, size_t);
+static void usb_dump_descriptor_endpoint(FILE *, const char *, const char *,
+    const uint8_t *, size_t);
+static void usb_dump_descriptor_hid(FILE *, const char *, const char *,
+    const uint8_t *, size_t);
+static void usb_dump_descriptor_hub(FILE *, const char *, const char *,
+    const uint8_t *, size_t);
+static void usb_dump_descriptor_generic(FILE *, const char *, const char *,
+    const uint8_t *, size_t);
+
+/** Descriptor dumpers mapping. */
+static descriptor_dump_t descriptor_dumpers[] = {
+	{ USB_DESCTYPE_DEVICE, usb_dump_descriptor_device },
+	{ USB_DESCTYPE_CONFIGURATION, usb_dump_descriptor_configuration },
+	{ USB_DESCTYPE_STRING, usb_dump_descriptor_string },
+	{ USB_DESCTYPE_INTERFACE, usb_dump_descriptor_interface },
+	{ USB_DESCTYPE_ENDPOINT, usb_dump_descriptor_endpoint },
+	{ USB_DESCTYPE_HID, usb_dump_descriptor_hid },
+	{ USB_DESCTYPE_HUB, usb_dump_descriptor_hub },
+	{ -1, usb_dump_descriptor_generic },
+	{ -1, NULL }
+};
+
+/** Dumps standard USB descriptor.
+ * The @p line_suffix must contain the newline <code>\\n</code> character.
+ * When @p line_suffix or @p line_prefix is NULL, they are substitued with
+ * default values
+ * (<code> - </code> for prefix and line termination for suffix).
+ *
+ * @param output Output file stream to dump descriptor to.
+ * @param line_prefix Prefix for each line of output.
+ * @param line_suffix Suffix of each line of output.
+ * @param descriptor Actual descriptor.
+ * @param descriptor_length Descriptor size.
+ */
+void usb_dump_standard_descriptor(FILE *output,
+    const char *line_prefix, const char *line_suffix,
+    const uint8_t *descriptor, size_t descriptor_length)
+{
+	if (descriptor_length < 2) {
+		return;
+	}
+	int type = descriptor[1];
+
+	descriptor_dump_t *dumper = descriptor_dumpers;
+	while (dumper->dump != NULL) {
+		if ((dumper->id == type) || (dumper->id < 0)) {
+			dumper->dump(output, line_prefix, line_suffix,
+			    descriptor, descriptor_length);
+			return;
+		}
+		dumper++;
+	}
+}
+
+/** Prints single line of USB descriptor dump.
+ * @warning This macro abuses heavily the naming conventions used
+ * by all dumping functions (i.e. names for output file stream (@c output) and
+ * line prefix and suffix (@c line_prefix and @c line_suffix respectively))-
+ *
+ * @param fmt Formatting string.
+ */
+#define PRINTLINE(fmt, ...) \
+	fprintf(output, "%s" fmt "%s", \
+	    line_prefix ? line_prefix : " - ", \
+	    __VA_ARGS__, \
+	    line_suffix ? line_suffix : "\n")
+
+#define BCD_INT(a) (((unsigned int)(a)) / 256)
+#define BCD_FRAC(a) (((unsigned int)(a)) % 256)
+
+#define BCD_FMT "%x.%x"
+#define BCD_ARGS(a) BCD_INT((a)), BCD_FRAC((a))
+
+static void usb_dump_descriptor_device(FILE *output,
+    const char *line_prefix, const char *line_suffix,
+    const uint8_t *descriptor, size_t descriptor_length)
+{
+	usb_standard_device_descriptor_t *d
+	    = (usb_standard_device_descriptor_t *) descriptor;
+	if (descriptor_length < sizeof(*d)) {
+		return;
+	}
+
+	PRINTLINE("bLength = %d", d->length);
+	PRINTLINE("bDescriptorType = 0x%02x", d->descriptor_type);
+	PRINTLINE("bcdUSB = %d (" BCD_FMT ")", d->usb_spec_version,
+	    BCD_ARGS(d->usb_spec_version));
+	PRINTLINE("bDeviceClass = 0x%02x", d->device_class);
+	PRINTLINE("bDeviceSubClass = 0x%02x", d->device_subclass);
+	PRINTLINE("bDeviceProtocol = 0x%02x", d->device_protocol);
+	PRINTLINE("bMaxPacketSize0 = %d", d->max_packet_size);
+	PRINTLINE("idVendor = 0x%04x", d->vendor_id);
+	PRINTLINE("idProduct = 0x%04x", d->product_id);
+	PRINTLINE("bcdDevice = %d", d->device_version);
+	PRINTLINE("iManufacturer = %d", d->str_manufacturer);
+	PRINTLINE("iProduct = %d", d->str_product);
+	PRINTLINE("iSerialNumber = %d", d->str_serial_number);
+	PRINTLINE("bNumConfigurations = %d", d->configuration_count);
+}
+
+static void usb_dump_descriptor_configuration(FILE *output,
+    const char *line_prefix, const char *line_suffix,
+    const uint8_t *descriptor, size_t descriptor_length)
+{
+	usb_standard_configuration_descriptor_t *d
+	    = (usb_standard_configuration_descriptor_t *) descriptor;
+	if (descriptor_length < sizeof(*d)) {
+		return;
+	}
+
+	bool self_powered = d->attributes & 64;
+	bool remote_wakeup = d->attributes & 32;
+
+	PRINTLINE("bLength = %d", d->length);
+	PRINTLINE("bDescriptorType = 0x%02x", d->descriptor_type);
+	PRINTLINE("wTotalLength = %d", d->total_length);
+	PRINTLINE("bNumInterfaces = %d", d->interface_count);
+	PRINTLINE("bConfigurationValue = %d", d->configuration_number);
+	PRINTLINE("iConfiguration = %d", d->str_configuration);
+	PRINTLINE("bmAttributes = %d [%s%s%s]", d->attributes,
+	    self_powered ? "self-powered" : "",
+	    (self_powered & remote_wakeup) ? ", " : "",
+	    remote_wakeup ? "remote-wakeup" : "");
+	PRINTLINE("MaxPower = %d (%dmA)", d->max_power,
+	    2 * d->max_power);
+}
+
+static void usb_dump_descriptor_interface(FILE *output,
+    const char *line_prefix, const char *line_suffix,
+    const uint8_t *descriptor, size_t descriptor_length)
+{
+	usb_standard_interface_descriptor_t *d
+	    = (usb_standard_interface_descriptor_t *) descriptor;
+	if (descriptor_length < sizeof(*d)) {
+		return;
+	}
+
+	PRINTLINE("bLength = %d", d->length);
+	PRINTLINE("bDescriptorType = 0x%02x", d->descriptor_type);
+	PRINTLINE("bInterfaceNumber = %d", d->interface_number);
+	PRINTLINE("bAlternateSetting = %d", d->alternate_setting);
+	PRINTLINE("bNumEndpoints = %d", d->endpoint_count);
+	PRINTLINE("bInterfaceClass = %s", d->interface_class == 0
+	    ? "reserved (0)" : usb_str_class(d->interface_class));
+	PRINTLINE("bInterfaceSubClass = %d", d->interface_subclass);
+	PRINTLINE("bInterfaceProtocol = %d", d->interface_protocol);
+	PRINTLINE("iInterface = %d", d->str_interface);
+}
+
+static void usb_dump_descriptor_string(FILE *output,
+    const char *line_prefix, const char *line_suffix,
+    const uint8_t *descriptor, size_t descriptor_length)
+{
+}
+
+static void usb_dump_descriptor_endpoint(FILE *output,
+    const char *line_prefix, const char *line_suffix,
+    const uint8_t *descriptor, size_t descriptor_length)
+{
+	usb_standard_endpoint_descriptor_t *d
+	   = (usb_standard_endpoint_descriptor_t *) descriptor;
+	if (descriptor_length < sizeof(*d)) {
+		return;
+	}
+
+	int endpoint = d->endpoint_address & 15;
+	usb_direction_t direction = d->endpoint_address & 128
+	    ? USB_DIRECTION_IN : USB_DIRECTION_OUT;
+	usb_transfer_type_t transfer_type = d->attributes & 3;
+
+	PRINTLINE("bLength = %d", d->length);
+	PRINTLINE("bDescriptorType = 0x%02X", d->descriptor_type);
+	PRINTLINE("bEndpointAddress = 0x%02X [%d, %s]",
+	    d->endpoint_address, endpoint,
+	    direction == USB_DIRECTION_IN ? "in" : "out");
+	PRINTLINE("bmAttributes = %d [%s]", d->attributes,
+	    usb_str_transfer_type(transfer_type));
+	PRINTLINE("wMaxPacketSize = %d", d->max_packet_size);
+	PRINTLINE("bInterval = %dms", d->poll_interval);
+}
+
+static void usb_dump_descriptor_hid(FILE *output,
+    const char *line_prefix, const char *line_suffix,
+    const uint8_t *descriptor, size_t descriptor_length)
+{
+	usb_standard_hid_descriptor_t *d
+	    = (usb_standard_hid_descriptor_t *) descriptor;
+	if (descriptor_length < sizeof(*d)) {
+		return;
+	}
+
+	PRINTLINE("bLength = %d", d->length);
+	PRINTLINE("bDescriptorType = 0x%02x", d->descriptor_type);
+	PRINTLINE("bcdHID = %d (" BCD_FMT ")", d->spec_release,
+	    BCD_ARGS(d->spec_release));
+	PRINTLINE("bCountryCode = %d", d->country_code);
+	PRINTLINE("bNumDescriptors = %d", d->class_desc_count);
+	PRINTLINE("bDescriptorType = %d", d->report_desc_info.type);
+	PRINTLINE("wDescriptorLength = %d", d->report_desc_info.length);
+
+	/* Print info about report descriptors. */
+	size_t i;
+	size_t count = (descriptor_length - sizeof(*d))
+	    / sizeof(usb_standard_hid_class_descriptor_info_t);
+	usb_standard_hid_class_descriptor_info_t *d2
+	    = (usb_standard_hid_class_descriptor_info_t *)
+	    (descriptor + sizeof(*d));
+	for (i = 0; i < count; i++, d2++) {
+		PRINTLINE("bDescriptorType = %d", d2->type);
+		PRINTLINE("wDescriptorLength = %d", d2->length);
+	}
+}
+
+static void usb_dump_descriptor_hub(FILE *output,
+    const char *line_prefix, const char *line_suffix,
+    const uint8_t *descriptor, size_t descriptor_length)
+{
+	/* TODO */
+}
+
+static void usb_dump_descriptor_generic(FILE *output,
+    const char *line_prefix, const char *line_suffix,
+    const uint8_t *descriptor, size_t descriptor_length)
+{
+	/* TODO */
+}
+
+
+/**
+ * @}
+ */
Index: uspace/lib/usb/src/hc.c
===================================================================
--- uspace/lib/usb/src/hc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/src/hc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,267 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * General communication with host controller driver (implementation).
+ */
+#include <devman.h>
+#include <async.h>
+#include <dev_iface.h>
+#include <usb_iface.h>
+#include <usbhc_iface.h>
+#include <usb/hc.h>
+#include <usb/debug.h>
+#include <errno.h>
+#include <assert.h>
+
+/** Initialize connection to USB host controller.
+ *
+ * @param connection Connection to be initialized.
+ * @param device Device connecting to the host controller.
+ * @return Error code.
+ */
+int usb_hc_connection_initialize_from_device(usb_hc_connection_t *connection,
+    ddf_dev_t *device)
+{
+	assert(connection);
+
+	if (device == NULL) {
+		return EBADMEM;
+	}
+
+	devman_handle_t hc_handle;
+	int rc = usb_hc_find(device->handle, &hc_handle);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	rc = usb_hc_connection_initialize(connection, hc_handle);
+
+	return rc;
+}
+
+/** Manually initialize connection to USB host controller.
+ *
+ * @param connection Connection to be initialized.
+ * @param hc_handle Devman handle of the host controller.
+ * @return Error code.
+ */
+int usb_hc_connection_initialize(usb_hc_connection_t *connection,
+    devman_handle_t hc_handle)
+{
+	assert(connection);
+
+	connection->hc_handle = hc_handle;
+	connection->hc_phone = -1;
+
+	return EOK;
+}
+
+/** Open connection to host controller.
+ *
+ * @param connection Connection to the host controller.
+ * @return Error code.
+ */
+int usb_hc_connection_open(usb_hc_connection_t *connection)
+{
+	assert(connection);
+
+	if (usb_hc_connection_is_opened(connection)) {
+		return EBUSY;
+	}
+
+	int phone = devman_device_connect(connection->hc_handle, 0);
+	if (phone < 0) {
+		return phone;
+	}
+
+	connection->hc_phone = phone;
+
+	return EOK;
+}
+
+/** Tells whether connection to host controller is opened.
+ *
+ * @param connection Connection to the host controller.
+ * @return Whether connection is opened.
+ */
+bool usb_hc_connection_is_opened(const usb_hc_connection_t *connection)
+{
+	assert(connection);
+
+	return (connection->hc_phone >= 0);
+}
+
+/** Close connection to the host controller.
+ *
+ * @param connection Connection to the host controller.
+ * @return Error code.
+ */
+int usb_hc_connection_close(usb_hc_connection_t *connection)
+{
+	assert(connection);
+
+	if (!usb_hc_connection_is_opened(connection)) {
+		return ENOENT;
+	}
+
+	int rc = async_hangup(connection->hc_phone);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	connection->hc_phone = -1;
+
+	return EOK;
+}
+
+/** Get handle of USB device with given address.
+ *
+ * @param[in] connection Opened connection to host controller.
+ * @param[in] address Address of device in question.
+ * @param[out] handle Where to write the device handle.
+ * @return Error code.
+ */
+int usb_hc_get_handle_by_address(usb_hc_connection_t *connection,
+    usb_address_t address, devman_handle_t *handle)
+{
+	if (!usb_hc_connection_is_opened(connection)) {
+		return ENOENT;
+	}
+
+	sysarg_t tmp;
+	int rc = async_req_2_1(connection->hc_phone,
+	    DEV_IFACE_ID(USBHC_DEV_IFACE),
+	    IPC_M_USBHC_GET_HANDLE_BY_ADDRESS,
+	    address, &tmp);
+	if ((rc == EOK) && (handle != NULL)) {
+		*handle = tmp;
+	}
+
+	return rc;
+}
+
+/** Tell USB address assigned to device with given handle.
+ *
+ * @param dev_handle Devman handle of the USB device in question.
+ * @return USB address or negative error code.
+ */
+usb_address_t usb_hc_get_address_by_handle(devman_handle_t dev_handle)
+{
+	int parent_phone = devman_parent_device_connect(dev_handle,
+	    IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+	sysarg_t address;
+
+	int rc = async_req_2_1(parent_phone, DEV_IFACE_ID(USB_DEV_IFACE),
+	    IPC_M_USB_GET_ADDRESS,
+	    dev_handle, &address);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	async_hangup(parent_phone);
+
+	return (usb_address_t) address;
+}
+
+
+/** Get host controller handle by its class index.
+ *
+ * @param class_index Class index for the host controller.
+ * @param hc_handle Where to store the HC handle
+ *	(can be NULL for existence test only).
+ * @return Error code.
+ */
+int usb_ddf_get_hc_handle_by_class(size_t class_index,
+    devman_handle_t *hc_handle)
+{
+	char *class_index_str;
+	devman_handle_t hc_handle_tmp;
+	int rc;
+
+	rc = asprintf(&class_index_str, "%zu", class_index);
+	if (rc < 0) {
+		return ENOMEM;
+	}
+	rc = devman_device_get_handle_by_class("usbhc", class_index_str,
+	    &hc_handle_tmp, 0);
+	free(class_index_str);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	if (hc_handle != NULL) {
+		*hc_handle = hc_handle_tmp;
+	}
+
+	return EOK;
+}
+
+/** Find host controller handle that is ancestor of given device.
+ *
+ * @param[in] device_handle Device devman handle.
+ * @param[out] hc_handle Where to store handle of host controller
+ *	controlling device with @p device_handle handle.
+ * @return Error code.
+ */
+int usb_hc_find(devman_handle_t device_handle, devman_handle_t *hc_handle)
+{
+	int parent_phone = devman_parent_device_connect(device_handle,
+	    IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+	devman_handle_t h;
+	int rc = async_req_1_1(parent_phone, DEV_IFACE_ID(USB_DEV_IFACE),
+	    IPC_M_USB_GET_HOST_CONTROLLER_HANDLE, &h);
+
+	async_hangup(parent_phone);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	if (hc_handle != NULL) {
+		*hc_handle = h;
+	}
+
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usb/src/resolve.c
===================================================================
--- uspace/lib/usb/src/resolve.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/src/resolve.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,244 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ *
+ */
+#include <inttypes.h>
+#include <usb/hc.h>
+#include <devman.h>
+#include <errno.h>
+#include <str.h>
+#include <stdio.h>
+
+#define MAX_DEVICE_PATH 1024
+
+static bool try_parse_bus_and_address(const char *path,
+    char **func_start,
+    devman_handle_t *out_hc_handle, usb_address_t *out_device_address)
+{
+	size_t class_index;
+	size_t address;
+	int rc;
+	char *ptr;
+
+	rc = str_size_t(path, &ptr, 10, false, &class_index);
+	if (rc != EOK) {
+		return false;
+	}
+	if ((*ptr == ':') || (*ptr == '.')) {
+		ptr++;
+	} else {
+		return false;
+	}
+	rc = str_size_t(ptr, func_start, 10, false, &address);
+	if (rc != EOK) {
+		return false;
+	}
+	rc = usb_ddf_get_hc_handle_by_class(class_index, out_hc_handle);
+	if (rc != EOK) {
+		return false;
+	}
+	if (out_device_address != NULL) {
+		*out_device_address = (usb_address_t) address;
+	}
+	return true;
+}
+
+static int get_device_handle_by_address(devman_handle_t hc_handle, int addr,
+    devman_handle_t *dev_handle)
+{
+	int rc;
+	usb_hc_connection_t conn;
+
+	usb_hc_connection_initialize(&conn, hc_handle);
+	rc = usb_hc_connection_open(&conn);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	rc = usb_hc_get_handle_by_address(&conn, addr, dev_handle);
+
+	usb_hc_connection_close(&conn);
+
+	return rc;
+}
+
+/** Resolve handle and address of USB device from its path.
+ *
+ * This is a wrapper working on best effort principle.
+ * If the resolving fails, if will not give much details about what
+ * is wrong.
+ * Typically, error from this function would be reported to the user
+ * as "bad device specification" or "device does not exist".
+ *
+ * The path can be specified in following format:
+ *  - devman path (e.g. /hw/pci0/.../usb01_a5
+ *  - bus number and device address (e.g. 5.1)
+ *  - bus number, device address and device function (e.g. 2.1/HID0/keyboard)
+ *
+ * @param[in] dev_path Path to the device.
+ * @param[out] out_hc_handle Where to store handle of a parent host controller.
+ * @param[out] out_dev_addr Where to store device (USB) address.
+ * @param[out] out_dev_handle Where to store device handle.
+ * @return Error code.
+ */
+int usb_resolve_device_handle(const char *dev_path, devman_handle_t *out_hc_handle,
+    usb_address_t *out_dev_addr, devman_handle_t *out_dev_handle)
+{
+	if (dev_path == NULL) {
+		return EBADMEM;
+	}
+
+	bool found_hc = false;
+	bool found_addr = false;
+	devman_handle_t hc_handle, dev_handle;
+	usb_address_t dev_addr = -1;
+	int rc;
+	bool is_bus_addr;
+	char *func_start = NULL;
+	char *path = NULL;
+
+	/* First try the BUS.ADDR format. */
+	is_bus_addr = try_parse_bus_and_address(dev_path, &func_start,
+	    &hc_handle, &dev_addr);
+	if (is_bus_addr) {
+		found_hc = true;
+		found_addr = true;
+		/*
+		 * Now get the handle of the device. We will need that
+		 * in both cases. If there is only BUS.ADDR, it will
+		 * be the handle to be returned to the caller, otherwise
+		 * we will need it to resolve the path to which the
+		 * suffix would be appended.
+		 */
+		/* If there is nothing behind the BUS.ADDR, we will
+		 * get the device handle from the host controller.
+		 * Otherwise, we will
+		 */
+		rc = get_device_handle_by_address(hc_handle, dev_addr,
+		    &dev_handle);
+		if (rc != EOK) {
+			return rc;
+		}
+		if (str_length(func_start) > 0) {
+			char tmp_path[MAX_DEVICE_PATH ];
+			rc = devman_get_device_path(dev_handle,
+			    tmp_path, MAX_DEVICE_PATH);
+			if (rc != EOK) {
+				return rc;
+			}
+			rc = asprintf(&path, "%s%s", tmp_path, func_start);
+			if (rc < 0) {
+				return ENOMEM;
+			}
+		} else {
+			/* Everything is resolved. Get out of here. */
+			goto copy_out;
+		}
+	} else {
+		path = str_dup(dev_path);
+		if (path == NULL) {
+			return ENOMEM;
+		}
+	}
+
+	/* First try to get the device handle. */
+	rc = devman_device_get_handle(path, &dev_handle, 0);
+	if (rc != EOK) {
+		free(path);
+		/* Invalid path altogether. */
+		return rc;
+	}
+
+	/* Remove suffixes and hope that we will encounter device node. */
+	while (str_length(path) > 0) {
+		/* Get device handle first. */
+		devman_handle_t tmp_handle;
+		rc = devman_device_get_handle(path, &tmp_handle, 0);
+		if (rc != EOK) {
+			free(path);
+			return rc;
+		}
+
+		/* Try to find its host controller. */
+		if (!found_hc) {
+			rc = usb_hc_find(tmp_handle, &hc_handle);
+			if (rc == EOK) {
+				found_hc = true;
+			}
+		}
+
+		/* Try to get its address. */
+		if (!found_addr) {
+			dev_addr = usb_hc_get_address_by_handle(tmp_handle);
+			if (dev_addr >= 0) {
+				found_addr = true;
+			}
+		}
+
+		/* Speed-up. */
+		if (found_hc && found_addr) {
+			break;
+		}
+
+		/* Remove the last suffix. */
+		char *slash_pos = str_rchr(path, '/');
+		if (slash_pos != NULL) {
+			*slash_pos = 0;
+		}
+	}
+
+	free(path);
+
+	if (!found_addr || !found_hc) {
+		return ENOENT;
+	}
+
+copy_out:
+	if (out_dev_addr != NULL) {
+		*out_dev_addr = dev_addr;
+	}
+	if (out_hc_handle != NULL) {
+		*out_hc_handle = hc_handle;
+	}
+	if (out_dev_handle != NULL) {
+		*out_dev_handle = dev_handle;
+	}
+
+	return EOK;
+}
+
+
+/**
+ * @}
+ */
+
Index: uspace/lib/usb/src/usb.c
===================================================================
--- uspace/lib/usb/src/usb.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usb/src/usb.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * Common USB functions.
+ */
+#include <usb/usb.h>
+#include <errno.h>
+
+#define ARR_SIZE(arr) (sizeof(arr)/sizeof(arr[0]))
+
+static const char *str_speed[] = {
+	"low",
+	"full",
+	"high"
+};
+
+static const char *str_transfer_type[] = {
+	"control",
+	"isochronous",
+	"bulk",
+	"interrupt"
+};
+
+static const char *str_transfer_type_short[] = {
+	"ctrl",
+	"iso",
+	"bulk",
+	"intr"
+};
+
+/** String representation for USB transfer type.
+ *
+ * @param t Transfer type.
+ * @return Transfer type as a string (in English).
+ */
+const char *usb_str_transfer_type(usb_transfer_type_t t)
+{
+	if (t >= ARR_SIZE(str_transfer_type)) {
+		return "invalid";
+	}
+	return str_transfer_type[t];
+}
+
+/** String representation for USB transfer type (short version).
+ *
+ * @param t Transfer type.
+ * @return Transfer type as a short string for debugging messages.
+ */
+const char *usb_str_transfer_type_short(usb_transfer_type_t t)
+{
+	if (t >= ARR_SIZE(str_transfer_type_short)) {
+		return "invl";
+	}
+	return str_transfer_type_short[t];
+}
+
+/** String representation of USB speed.
+ *
+ * @param s The speed.
+ * @return USB speed as a string (in English).
+ */
+const char *usb_str_speed(usb_speed_t s)
+{
+	if (s >= ARR_SIZE(str_speed)) {
+		return "invalid";
+	}
+	return str_speed[s];
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/Makefile
===================================================================
--- uspace/lib/usbdev/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,50 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+LIBRARY = libusbdev
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include \
+	-Iinclude
+
+SOURCES = \
+	src/altiface.c \
+	src/devdrv.c \
+	src/devpoll.c \
+	src/dp.c \
+	src/hub.c \
+	src/pipepriv.c \
+	src/pipepriv.h \
+	src/pipes.c \
+	src/pipesinit.c \
+	src/pipesio.c \
+	src/recognise.c \
+	src/request.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/lib/usbdev/include/usb/dev/dp.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/dp.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/include/usb/dev/dp.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * USB descriptor parser.
+ */
+#ifndef LIBUSBDEV_DP_H_
+#define LIBUSBDEV_DP_H_
+
+#include <sys/types.h>
+#include <usb/usb.h>
+#include <usb/descriptor.h>
+
+/** USB descriptors nesting.
+ * The nesting describes the logical tree USB descriptors form
+ * (e.g. that endpoint descriptor belongs to interface or that
+ * interface belongs to configuration).
+ *
+ * See usb_descriptor_type_t for descriptor constants.
+ */
+typedef struct {
+	/** Child descriptor id. */
+	int child;
+	/** Parent descriptor id. */
+	int parent;
+} usb_dp_descriptor_nesting_t;
+
+extern usb_dp_descriptor_nesting_t usb_dp_standard_descriptor_nesting[];
+
+/** Descriptor parser structure. */
+typedef struct {
+	/** Used descriptor nesting. */
+	usb_dp_descriptor_nesting_t *nesting;
+} usb_dp_parser_t;
+
+/** Descriptor parser data. */
+typedef struct {
+	/** Data to be parsed. */
+	uint8_t *data;
+	/** Size of input data in bytes. */
+	size_t size;
+	/** Custom argument. */
+	void *arg;
+} usb_dp_parser_data_t;
+
+uint8_t *usb_dp_get_nested_descriptor(usb_dp_parser_t *,
+    usb_dp_parser_data_t *, uint8_t *);
+uint8_t *usb_dp_get_sibling_descriptor(usb_dp_parser_t *,
+    usb_dp_parser_data_t *, uint8_t *, uint8_t *);
+
+void usb_dp_walk_simple(uint8_t *, size_t, usb_dp_descriptor_nesting_t *,
+    void (*)(uint8_t *, size_t, void *), void *);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/include/usb/dev/driver.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/driver.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/include/usb/dev/driver.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,179 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * USB device driver framework.
+ */
+#ifndef LIBUSBDEV_DRIVER_H_
+#define LIBUSBDEV_DRIVER_H_
+
+#include <usb/dev/pipes.h>
+
+/** Descriptors for USB device. */
+typedef struct {
+	/** Standard device descriptor. */
+	usb_standard_device_descriptor_t device;
+	/** Full configuration descriptor of current configuration. */
+	uint8_t *configuration;
+	size_t configuration_size;
+} usb_device_descriptors_t;
+
+/** Wrapper for data related to alternate interface setting.
+ * The pointers will typically point inside configuration descriptor and
+ * thus you shall not deallocate them.
+ */
+typedef struct {
+	/** Interface descriptor. */
+	usb_standard_interface_descriptor_t *interface;
+	/** Pointer to start of descriptor tree bound with this interface. */
+	uint8_t *nested_descriptors;
+	/** Size of data pointed by nested_descriptors in bytes. */
+	size_t nested_descriptors_size;
+} usb_alternate_interface_descriptors_t;
+
+/** Alternate interface settings. */
+typedef struct {
+	/** Array of alternate interfaces descriptions. */
+	usb_alternate_interface_descriptors_t *alternatives;
+	/** Size of @c alternatives array. */
+	size_t alternative_count;
+	/** Index of currently selected one. */
+	size_t current;
+} usb_alternate_interfaces_t;
+
+/** USB device structure. */
+typedef struct {
+	/** The default control pipe. */
+	usb_pipe_t ctrl_pipe;
+	/** Other endpoint pipes.
+	 * This is an array of other endpoint pipes in the same order as
+	 * in usb_driver_t.
+	 */
+	usb_endpoint_mapping_t *pipes;
+	/** Number of other endpoint pipes. */
+	size_t pipes_count;
+	/** Current interface.
+	 * Usually, drivers operate on single interface only.
+	 * This item contains the value of the interface or -1 for any.
+	 */
+	int interface_no;
+
+	/** Alternative interfaces.
+	 * Set to NULL when the driver controls whole device
+	 * (i.e. more (or any) interfaces).
+	 */
+	usb_alternate_interfaces_t *alternate_interfaces;
+
+	/** Some useful descriptors. */
+	usb_device_descriptors_t descriptors;
+
+	/** Generic DDF device backing this one. */
+	ddf_dev_t *ddf_dev;
+	/** Custom driver data.
+	 * Do not use the entry in generic device, that is already used
+	 * by the framework.
+	 */
+	void *driver_data;
+
+	/** Connection backing the pipes.
+	 * Typically, you will not need to use this attribute at all.
+	 */
+	usb_device_connection_t wire;
+} usb_device_t;
+
+/** USB driver ops. */
+typedef struct {
+	/** Callback when new device is about to be controlled by the driver. */
+	int (*add_device)(usb_device_t *);
+} usb_driver_ops_t;
+
+/** USB driver structure. */
+typedef struct {
+	/** Driver name.
+	 * This name is copied to the generic driver name and must be exactly
+	 * the same as the directory name where the driver executable resides.
+	 */
+	const char *name;
+	/** Expected endpoints description.
+	 * This description shall exclude default control endpoint (pipe zero)
+	 * and must be NULL terminated.
+	 * When only control endpoint is expected, you may set NULL directly
+	 * without creating one item array containing NULL.
+	 *
+	 * When the driver expect single interrupt in endpoint,
+	 * the initialization may look like this:
+\code
+static usb_endpoint_description_t poll_endpoint_description = {
+	.transfer_type = USB_TRANSFER_INTERRUPT,
+	.direction = USB_DIRECTION_IN,
+	.interface_class = USB_CLASS_HUB,
+	.interface_subclass = 0,
+	.interface_protocol = 0,
+	.flags = 0
+};
+
+static usb_endpoint_description_t *hub_endpoints[] = {
+	&poll_endpoint_description,
+	NULL
+};
+
+static usb_driver_t hub_driver = {
+	.endpoints = hub_endpoints,
+	...
+};
+\endcode
+	 */
+	usb_endpoint_description_t **endpoints;
+	/** Driver ops. */
+	usb_driver_ops_t *ops;
+} usb_driver_t;
+
+int usb_driver_main(usb_driver_t *);
+
+int usb_device_select_interface(usb_device_t *, uint8_t,
+    usb_endpoint_description_t **);
+
+int usb_device_retrieve_descriptors(usb_pipe_t *, usb_device_descriptors_t *);
+int usb_device_create_pipes(ddf_dev_t *, usb_device_connection_t *,
+    usb_endpoint_description_t **, uint8_t *, size_t, int, int,
+    usb_endpoint_mapping_t **, size_t *);
+int usb_device_destroy_pipes(ddf_dev_t *, usb_endpoint_mapping_t *, size_t);
+int usb_device_create(ddf_dev_t *, usb_endpoint_description_t **, usb_device_t **, const char **);
+void usb_device_destroy(usb_device_t *);
+
+size_t usb_interface_count_alternates(uint8_t *, size_t, uint8_t);
+int usb_alternate_interfaces_create(uint8_t *, size_t, int,
+    usb_alternate_interfaces_t **);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/include/usb/dev/hub.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/include/usb/dev/hub.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Functions needed by hub drivers.
+ *
+ * For class specific requests, see usb/classes/hub.h.
+ */
+#ifndef LIBUSBDEV_HUB_H_
+#define LIBUSBDEV_HUB_H_
+
+#include <sys/types.h>
+#include <usb/hc.h>
+
+int usb_hc_new_device_wrapper(ddf_dev_t *, usb_hc_connection_t *, usb_speed_t,
+    int (*)(int, void *), int, void *,
+    usb_address_t *, devman_handle_t *,
+    ddf_dev_ops_t *, void *, ddf_fun_t **);
+
+/** Info about device attached to host controller.
+ *
+ * This structure exists only to keep the same signature of
+ * usb_hc_register_device() when more properties of the device
+ * would have to be passed to the host controller.
+ */
+typedef struct {
+	/** Device address. */
+	usb_address_t address;
+	/** Devman handle of the device. */
+	devman_handle_t handle;
+} usb_hc_attached_device_t;
+
+usb_address_t usb_hc_request_address(usb_hc_connection_t *, usb_speed_t);
+int usb_hc_register_device(usb_hc_connection_t *,
+    const usb_hc_attached_device_t *);
+int usb_hc_unregister_device(usb_hc_connection_t *, usb_address_t);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/include/usb/dev/pipes.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/pipes.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/include/usb/dev/pipes.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,192 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * USB pipes representation.
+ */
+#ifndef LIBUSBDEV_PIPES_H_
+#define LIBUSBDEV_PIPES_H_
+
+#include <sys/types.h>
+#include <usb/usb.h>
+#include <usb/hc.h>
+#include <usb/descriptor.h>
+#include <ipc/devman.h>
+#include <ddf/driver.h>
+#include <fibril_synch.h>
+
+/** Abstraction of a physical connection to the device.
+ * This type is an abstraction of the USB wire that connects the host and
+ * the function (device).
+ */
+typedef struct {
+	/** Handle of the host controller device is connected to. */
+	devman_handle_t hc_handle;
+	/** Address of the device. */
+	usb_address_t address;
+} usb_device_connection_t;
+
+/** Abstraction of a logical connection to USB device endpoint.
+ * It encapsulates endpoint attributes (transfer type etc.) as well
+ * as information about currently running sessions.
+ * This endpoint must be bound with existing usb_device_connection_t
+ * (i.e. the wire to send data over).
+ *
+ * Locking order: if you want to lock both mutexes
+ * (@c guard and @c hc_phone_mutex), lock @c guard first.
+ * It is not necessary to lock @c guard if you want to lock @c hc_phone_mutex
+ * only.
+ */
+typedef struct {
+	/** Guard of the whole pipe. */
+	fibril_mutex_t guard;
+
+	/** The connection used for sending the data. */
+	usb_device_connection_t *wire;
+
+	/** Endpoint number. */
+	usb_endpoint_t endpoint_no;
+
+	/** Endpoint transfer type. */
+	usb_transfer_type_t transfer_type;
+
+	/** Endpoint direction. */
+	usb_direction_t direction;
+
+	/** Maximum packet size for the endpoint. */
+	size_t max_packet_size;
+
+	/** Phone to the host controller.
+	 * Negative when no session is active.
+	 * It is an error to access this member without @c hc_phone_mutex
+	 * being locked.
+	 * If call over the phone is to be made, it must be preceeded by
+	 * call to pipe_add_ref() [internal libusb function].
+	 */
+	int hc_phone;
+
+	/** Guard for serialization of requests over the phone. */
+	fibril_mutex_t hc_phone_mutex;
+
+	/** Number of active transfers over the pipe. */
+	int refcount;
+	/** Number of failed attempts to open the HC phone.
+	 * When user requests usb_pipe_start_long_transfer() and the operation
+	 * fails, there is no way to report this to the user.
+	 * That the soft reference counter is increased to record the attempt.
+	 * When the user then request e.g. usb_pipe_read(), it will try to
+	 * add reference as well.
+	 * If that fails, it is reported to the user. If it is okay, the
+	 * real reference counter is incremented.
+	 * The problem might arise when ending the long transfer (since
+	 * the number of references would be only 1, but logically it shall be
+	 * two).
+	 * Decrementing the soft counter first shall solve this.
+	 */
+	int refcount_soft;
+
+	/** Whether to automatically reset halt on the endpoint.
+	 * Valid only for control endpoint zero.
+	 */
+	bool auto_reset_halt;
+} usb_pipe_t;
+
+
+/** Description of endpoint characteristics. */
+typedef struct {
+	/** Transfer type (e.g. control or interrupt). */
+	usb_transfer_type_t transfer_type;
+	/** Transfer direction (to or from a device). */
+	usb_direction_t direction;
+	/** Interface class this endpoint belongs to (-1 for any). */
+	int interface_class;
+	/** Interface subclass this endpoint belongs to (-1 for any). */
+	int interface_subclass;
+	/** Interface protocol this endpoint belongs to (-1 for any). */
+	int interface_protocol;
+	/** Extra endpoint flags. */
+	unsigned int flags;
+} usb_endpoint_description_t;
+
+/** Mapping of endpoint pipes and endpoint descriptions. */
+typedef struct {
+	/** Endpoint pipe. */
+	usb_pipe_t *pipe;
+	/** Endpoint description. */
+	const usb_endpoint_description_t *description;
+	/** Interface number the endpoint must belong to (-1 for any). */
+	int interface_no;
+	/** Alternate interface setting to choose. */
+	int interface_setting;
+	/** Found descriptor fitting the description. */
+	usb_standard_endpoint_descriptor_t *descriptor;
+	/** Interface descriptor the endpoint belongs to. */
+	usb_standard_interface_descriptor_t *interface;
+	/** Whether the endpoint was actually found. */
+	bool present;
+} usb_endpoint_mapping_t;
+
+int usb_device_connection_initialize_on_default_address(
+    usb_device_connection_t *, usb_hc_connection_t *);
+int usb_device_connection_initialize_from_device(usb_device_connection_t *,
+    ddf_dev_t *);
+int usb_device_connection_initialize(usb_device_connection_t *,
+    devman_handle_t, usb_address_t);
+
+int usb_device_get_assigned_interface(ddf_dev_t *);
+
+int usb_pipe_initialize(usb_pipe_t *, usb_device_connection_t *,
+    usb_endpoint_t, usb_transfer_type_t, size_t, usb_direction_t);
+int usb_pipe_initialize_default_control(usb_pipe_t *,
+    usb_device_connection_t *);
+int usb_pipe_probe_default_control(usb_pipe_t *);
+int usb_pipe_initialize_from_configuration(usb_endpoint_mapping_t *,
+    size_t, uint8_t *, size_t, usb_device_connection_t *);
+int usb_pipe_register_with_speed(usb_pipe_t *, usb_speed_t,
+    unsigned int, usb_hc_connection_t *);
+int usb_pipe_register(usb_pipe_t *, unsigned int, usb_hc_connection_t *);
+int usb_pipe_unregister(usb_pipe_t *, usb_hc_connection_t *);
+
+void usb_pipe_start_long_transfer(usb_pipe_t *);
+void usb_pipe_end_long_transfer(usb_pipe_t *);
+
+int usb_pipe_read(usb_pipe_t *, void *, size_t, size_t *);
+int usb_pipe_write(usb_pipe_t *, void *, size_t);
+
+int usb_pipe_control_read(usb_pipe_t *, void *, size_t,
+    void *, size_t, size_t *);
+int usb_pipe_control_write(usb_pipe_t *, void *, size_t,
+    void *, size_t);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/include/usb/dev/poll.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/poll.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/include/usb/dev/poll.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * USB device polling functions.
+ */
+#ifndef LIBUSBDEV_POLL_H_
+#define LIBUSBDEV_POLL_H_
+
+#include <usb/dev/driver.h>
+#include <time.h>
+
+typedef struct {
+	/** Level of debugging messages from auto polling.
+	 * 0 - nothing
+	 * 1 - inform about errors and polling start/end
+	 * 2 - also dump every retrieved buffer
+	 */
+	int debug;
+	/** Maximum number of consecutive errors before polling termination. */
+	size_t max_failures;
+	/** Delay between poll requests in milliseconds.
+	 * Set to negative value to use value from endpoint descriptor.
+	 */
+	int delay;
+	/** Whether to automatically try to clear the HALT feature after
+	 * the endpoint stalls.
+	 */
+	bool auto_clear_halt;
+	/** Callback when data arrives.
+	 *
+	 * @param dev Device that was polled.
+	 * @param data Data buffer (in USB endianness).
+	 * @param data_size Size of the @p data buffer in bytes.
+	 * @param arg Custom argument.
+	 * @return Whether to continue in polling.
+	 */
+	bool (*on_data)(usb_device_t *dev, uint8_t *data, size_t data_size,
+	    void *arg);
+	/** Callback when polling is terminated.
+	 *
+	 * @param dev Device where the polling was terminated.
+	 * @param due_to_errors Whether polling stopped due to several failures.
+	 * @param arg Custom argument.
+	 */
+	void (*on_polling_end)(usb_device_t *dev, bool due_to_errors,
+	    void *arg);
+	/** Callback when error occurs.
+	 *
+	 * @param dev Device where error occurred.
+	 * @param err_code Error code (as returned from usb_pipe_read).
+	 * @param arg Custom argument.
+	 * @return Whether to continue in polling.
+	 */
+	bool (*on_error)(usb_device_t *dev, int err_code, void *arg);
+} usb_device_auto_polling_t;
+
+int usb_device_auto_polling(usb_device_t *, size_t, usb_device_auto_polling_t *,
+    size_t, void *);
+
+typedef bool (*usb_polling_callback_t)(usb_device_t *,
+    uint8_t *, size_t, void *);
+typedef void (*usb_polling_terminted_callback_t)(usb_device_t *, bool, void *);
+
+int usb_device_auto_poll(usb_device_t *, size_t,
+    usb_polling_callback_t, size_t, usb_polling_terminted_callback_t, void *);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/include/usb/dev/recognise.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/recognise.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/include/usb/dev/recognise.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * USB device recognition.
+ */
+#ifndef LIBUSBDEV_RECOGNISE_H_
+#define LIBUSBDEV_RECOGNISE_H_
+
+#include <sys/types.h>
+#include <usb/usb.h>
+#include <usb/dev/pipes.h>
+#include <ipc/devman.h>
+
+int usb_device_create_match_ids_from_device_descriptor(
+    const usb_standard_device_descriptor_t *, match_id_list_t *);
+
+int usb_device_create_match_ids_from_interface(
+    const usb_standard_device_descriptor_t *,
+    const usb_standard_interface_descriptor_t *, match_id_list_t *);
+
+int usb_device_create_match_ids(usb_pipe_t *, match_id_list_t *);
+
+int usb_device_register_child_in_devman(usb_address_t, devman_handle_t,
+    ddf_dev_t *, devman_handle_t *, ddf_dev_ops_t *, void *, ddf_fun_t **);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/include/usb/dev/request.h
===================================================================
--- uspace/lib/usbdev/include/usb/dev/request.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/include/usb/dev/request.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Standard USB requests.
+ */
+#ifndef LIBUSBDEV_REQUEST_H_
+#define LIBUSBDEV_REQUEST_H_
+
+#include <sys/types.h>
+#include <l18n/langs.h>
+#include <usb/usb.h>
+#include <usb/dev/pipes.h>
+#include <usb/descriptor.h>
+
+/** USB device status - device is self powered (opposed to bus powered). */
+#define USB_DEVICE_STATUS_SELF_POWERED ((uint16_t)(1 << 0))
+
+/** USB device status - remote wake-up signaling is enabled. */
+#define USB_DEVICE_STATUS_REMOTE_WAKEUP ((uint16_t)(1 << 1))
+
+/** USB endpoint status - endpoint is halted (stalled). */
+#define USB_ENDPOINT_STATUS_HALTED ((uint16_t)(1 << 0))
+
+/** USB feature selector - endpoint halt (stall). */
+#define USB_FEATURE_SELECTOR_ENDPOINT_HALT (0)
+
+/** USB feature selector - device remote wake-up. */
+#define USB_FEATURE_SELECTOR_REMOTE_WAKEUP (1)
+
+/** Standard device request. */
+typedef enum {
+	USB_DEVREQ_GET_STATUS = 0,
+	USB_DEVREQ_CLEAR_FEATURE = 1,
+	USB_DEVREQ_SET_FEATURE = 3,
+	USB_DEVREQ_SET_ADDRESS = 5,
+	USB_DEVREQ_GET_DESCRIPTOR = 6,
+	USB_DEVREQ_SET_DESCRIPTOR = 7,
+	USB_DEVREQ_GET_CONFIGURATION = 8,
+	USB_DEVREQ_SET_CONFIGURATION = 9,
+	USB_DEVREQ_GET_INTERFACE = 10,
+	USB_DEVREQ_SET_INTERFACE = 11,
+	USB_DEVREQ_SYNCH_FRAME = 12,
+	USB_DEVREQ_LAST_STD
+} usb_stddevreq_t;
+
+/** Device request setup packet.
+ * The setup packet describes the request.
+ */
+typedef struct {
+	/** Request type.
+	 * The type combines transfer direction, request type and
+	 * intended recipient.
+	 */
+	uint8_t request_type;
+	/** Request identification. */
+	uint8_t request;
+	/** Main parameter to the request. */
+	union {
+		uint16_t value;
+		/* FIXME: add #ifdefs according to host endianness */
+		struct {
+			uint8_t value_low;
+			uint8_t value_high;
+		};
+	};
+	/** Auxiliary parameter to the request.
+	 * Typically, it is offset to something.
+	 */
+	uint16_t index;
+	/** Length of extra data. */
+	uint16_t length;
+} __attribute__ ((packed)) usb_device_request_setup_packet_t;
+
+int usb_control_request_set(usb_pipe_t *,
+    usb_request_type_t, usb_request_recipient_t, uint8_t,
+    uint16_t, uint16_t, void *, size_t);
+
+int usb_control_request_get(usb_pipe_t *,
+    usb_request_type_t, usb_request_recipient_t, uint8_t,
+    uint16_t, uint16_t, void *, size_t, size_t *);
+
+int usb_request_get_status(usb_pipe_t *, usb_request_recipient_t,
+    uint16_t, uint16_t *);
+int usb_request_clear_feature(usb_pipe_t *, usb_request_type_t,
+    usb_request_recipient_t, uint16_t, uint16_t);
+int usb_request_set_feature(usb_pipe_t *, usb_request_type_t,
+    usb_request_recipient_t, uint16_t, uint16_t);
+int usb_request_set_address(usb_pipe_t *, usb_address_t);
+int usb_request_get_descriptor(usb_pipe_t *, usb_request_type_t,
+    usb_request_recipient_t, uint8_t, uint8_t, uint16_t, void *, size_t, 
+    size_t *);
+int usb_request_get_descriptor_alloc(usb_pipe_t *, usb_request_type_t,
+    usb_request_recipient_t, uint8_t, uint8_t, uint16_t, void **, size_t *);
+int usb_request_get_device_descriptor(usb_pipe_t *,
+    usb_standard_device_descriptor_t *);
+int usb_request_get_bare_configuration_descriptor(usb_pipe_t *, int,
+    usb_standard_configuration_descriptor_t *);
+int usb_request_get_full_configuration_descriptor(usb_pipe_t *, int,
+    void *, size_t, size_t *);
+int usb_request_get_full_configuration_descriptor_alloc(usb_pipe_t *,
+    int, void **, size_t *);
+int usb_request_set_descriptor(usb_pipe_t *, usb_request_type_t,
+    usb_request_recipient_t, uint8_t, uint8_t, uint16_t, void *, size_t);
+int usb_request_get_configuration(usb_pipe_t *, uint8_t *);
+int usb_request_set_configuration(usb_pipe_t *, uint8_t);
+int usb_request_get_interface(usb_pipe_t *, uint8_t, uint8_t *);
+int usb_request_set_interface(usb_pipe_t *, uint8_t, uint8_t);
+
+int usb_request_get_supported_languages(usb_pipe_t *,
+    l18_win_locales_t **, size_t *);
+int usb_request_get_string(usb_pipe_t *, size_t, l18_win_locales_t,
+    char **);
+
+int usb_request_clear_endpoint_halt(usb_pipe_t *, uint16_t);
+int usb_pipe_clear_halt(usb_pipe_t *, usb_pipe_t *);
+int usb_request_get_endpoint_status(usb_pipe_t *, usb_pipe_t *, uint16_t *);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/altiface.c
===================================================================
--- uspace/lib/usbdev/src/altiface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/altiface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Handling alternate interface settings.
+ */
+#include <usb/dev/driver.h>
+#include <usb/dev/request.h>
+#include <usb/debug.h>
+#include <usb/dev/dp.h>
+#include <errno.h>
+#include <str_error.h>
+#include <assert.h>
+
+/** Count number of alternate settings of a interface.
+ *
+ * @param config_descr Full configuration descriptor.
+ * @param config_descr_size Size of @p config_descr in bytes.
+ * @param interface_no Interface number.
+ * @return Number of alternate interfaces for @p interface_no interface.
+ */
+size_t usb_interface_count_alternates(uint8_t *config_descr,
+    size_t config_descr_size, uint8_t interface_no)
+{
+	assert(config_descr != NULL);
+	assert(config_descr_size > 0);
+
+	usb_dp_parser_t dp_parser = {
+		.nesting = usb_dp_standard_descriptor_nesting
+	};
+	usb_dp_parser_data_t dp_data = {
+		.data = config_descr,
+		.size = config_descr_size,
+		.arg = NULL
+	};
+
+	size_t alternate_count = 0;
+
+	uint8_t *iface_ptr = usb_dp_get_nested_descriptor(&dp_parser,
+	    &dp_data, config_descr);
+	while (iface_ptr != NULL) {
+		usb_standard_interface_descriptor_t *iface
+		    = (usb_standard_interface_descriptor_t *) iface_ptr;
+		if (iface->descriptor_type == USB_DESCTYPE_INTERFACE) {
+			if (iface->interface_number == interface_no) {
+				alternate_count++;
+			}
+		}
+		iface_ptr = usb_dp_get_sibling_descriptor(&dp_parser, &dp_data,
+		    config_descr, iface_ptr);
+	}
+
+	return alternate_count;
+}
+
+/** Create alternate interface representation structure.
+ *
+ * @param[in] config_descr Configuration descriptor.
+ * @param[in] config_descr_size Size of configuration descriptor.
+ * @param[in] interface_number Interface number.
+ * @param[out] alternates_ptr Where to store pointer to allocated structure.
+ * @return Error code.
+ */
+int usb_alternate_interfaces_create(uint8_t *config_descr,
+    size_t config_descr_size, int interface_number,
+    usb_alternate_interfaces_t **alternates_ptr)
+{
+	assert(alternates_ptr != NULL);
+	assert(config_descr != NULL);
+	assert(config_descr_size > 0);
+
+	if (interface_number < 0) {
+		alternates_ptr = NULL;
+		return EOK;
+	}
+
+	usb_alternate_interfaces_t *alternates
+	    = malloc(sizeof(usb_alternate_interfaces_t));
+
+	if (alternates == NULL) {
+		return ENOMEM;
+	}
+
+	alternates->alternative_count
+	    = usb_interface_count_alternates(config_descr, config_descr_size,
+	    interface_number);
+
+	if (alternates->alternative_count == 0) {
+		free(alternates);
+		return ENOENT;
+	}
+
+	alternates->alternatives = malloc(alternates->alternative_count
+	    * sizeof(usb_alternate_interface_descriptors_t));
+	if (alternates->alternatives == NULL) {
+		free(alternates);
+		return ENOMEM;
+	}
+
+	alternates->current = 0;
+
+	usb_dp_parser_t dp_parser = {
+		.nesting = usb_dp_standard_descriptor_nesting
+	};
+	usb_dp_parser_data_t dp_data = {
+		.data = config_descr,
+		.size = config_descr_size,
+		.arg = NULL
+	};
+
+	usb_alternate_interface_descriptors_t *cur_alt_iface
+	    = &alternates->alternatives[0];
+
+	uint8_t *iface_ptr = usb_dp_get_nested_descriptor(&dp_parser,
+	    &dp_data, dp_data.data);
+	while (iface_ptr != NULL) {
+		usb_standard_interface_descriptor_t *iface
+		    = (usb_standard_interface_descriptor_t *) iface_ptr;
+		if ((iface->descriptor_type != USB_DESCTYPE_INTERFACE)
+		    || (iface->interface_number != interface_number)) {
+			iface_ptr = usb_dp_get_sibling_descriptor(&dp_parser,
+			    &dp_data,
+			    dp_data.data, iface_ptr);
+			continue;
+		}
+
+		cur_alt_iface->interface = iface;
+		cur_alt_iface->nested_descriptors = iface_ptr + sizeof(*iface);
+
+		/* Find next interface to count size of nested descriptors. */
+		iface_ptr = usb_dp_get_sibling_descriptor(&dp_parser, &dp_data,
+		    dp_data.data, iface_ptr);
+		if (iface_ptr == NULL) {
+			uint8_t *next = dp_data.data + dp_data.size;
+			cur_alt_iface->nested_descriptors_size
+			    = next - cur_alt_iface->nested_descriptors;
+		} else {
+			cur_alt_iface->nested_descriptors_size
+			    = iface_ptr - cur_alt_iface->nested_descriptors;
+		}
+
+		cur_alt_iface++;
+	}
+
+	*alternates_ptr = alternates;
+
+	return EOK;
+}
+
+
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/devdrv.c
===================================================================
--- uspace/lib/usbdev/src/devdrv.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/devdrv.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,563 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * USB device driver framework.
+ */
+#include <usb/dev/driver.h>
+#include <usb/dev/request.h>
+#include <usb/debug.h>
+#include <usb/dev/dp.h>
+#include <errno.h>
+#include <str_error.h>
+#include <assert.h>
+
+static int generic_add_device(ddf_dev_t *);
+
+static driver_ops_t generic_driver_ops = {
+	.add_device = generic_add_device
+};
+static driver_t generic_driver = {
+	.driver_ops = &generic_driver_ops
+};
+
+static usb_driver_t *driver = NULL;
+
+
+/** Main routine of USB device driver.
+ *
+ * Under normal conditions, this function never returns.
+ *
+ * @param drv USB device driver structure.
+ * @return Task exit status.
+ */
+int usb_driver_main(usb_driver_t *drv)
+{
+	assert(drv != NULL);
+
+	/* Prepare the generic driver. */
+	generic_driver.name = drv->name;
+
+	driver = drv;
+
+	return ddf_driver_main(&generic_driver);
+}
+
+/** Count number of pipes the driver expects.
+ *
+ * @param drv USB driver.
+ * @return Number of pipes (excluding default control pipe).
+ */
+static size_t count_other_pipes(usb_endpoint_description_t **endpoints)
+{
+	size_t count = 0;
+	if (endpoints == NULL) {
+		return 0;
+	}
+
+	while (endpoints[count] != NULL) {
+		count++;
+	}
+
+	return count;
+}
+
+/** Initialize endpoint pipes, excluding default control one.
+ *
+ * @param drv The device driver.
+ * @param dev Device to be initialized.
+ * @return Error code.
+ */
+static int initialize_other_pipes(usb_endpoint_description_t **endpoints,
+    usb_device_t *dev, int alternate_setting)
+{
+	if (endpoints == NULL) {
+		dev->pipes = NULL;
+		dev->pipes_count = 0;
+		return EOK;
+	}
+
+	usb_endpoint_mapping_t *pipes;
+	size_t pipes_count;
+
+	int rc = usb_device_create_pipes(dev->ddf_dev, &dev->wire, endpoints,
+	    dev->descriptors.configuration, dev->descriptors.configuration_size,
+	    dev->interface_no, alternate_setting,
+	    &pipes, &pipes_count);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	dev->pipes = pipes;
+	dev->pipes_count = pipes_count;
+
+	return EOK;
+}
+
+/** Callback when new device is supposed to be controlled by this driver.
+ *
+ * This callback is a wrapper for USB specific version of @c add_device.
+ *
+ * @param gen_dev Device structure as prepared by DDF.
+ * @return Error code.
+ */
+int generic_add_device(ddf_dev_t *gen_dev)
+{
+	assert(driver);
+	assert(driver->ops);
+	assert(driver->ops->add_device);
+
+	int rc;
+
+	usb_device_t *dev = NULL;
+	const char *err_msg = NULL;
+	rc = usb_device_create(gen_dev, driver->endpoints, &dev, &err_msg);
+	if (rc != EOK) {
+		usb_log_error("USB device `%s' creation failed (%s): %s.\n",
+		    gen_dev->name, err_msg, str_error(rc));
+		return rc;
+	}
+
+	return driver->ops->add_device(dev);
+}
+
+/** Destroy existing pipes of a USB device.
+ *
+ * @param dev Device where to destroy the pipes.
+ * @return Error code.
+ */
+static int destroy_current_pipes(usb_device_t *dev)
+{
+	int rc = usb_device_destroy_pipes(dev->ddf_dev,
+	    dev->pipes, dev->pipes_count);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	dev->pipes = NULL;
+	dev->pipes_count = 0;
+
+	return EOK;
+}
+
+/** Change interface setting of a device.
+ * This function selects new alternate setting of an interface by issuing
+ * proper USB command to the device and also creates new USB pipes
+ * under @c dev->pipes.
+ *
+ * @warning This function is intended for drivers working at interface level.
+ * For drivers controlling the whole device, you need to change interface
+ * manually using usb_request_set_interface() and creating new pipes
+ * with usb_pipe_initialize_from_configuration().
+ *
+ * @warning This is a wrapper function that does several operations that
+ * can fail and that cannot be rollbacked easily. That means that a failure
+ * during the SET_INTERFACE request would result in having a device with
+ * no pipes at all (except the default control one). That is because the old
+ * pipes needs to be unregistered at HC first and the new ones could not
+ * be created.
+ *
+ * @param dev USB device.
+ * @param alternate_setting Alternate setting to choose.
+ * @param endpoints New endpoint descriptions.
+ * @return Error code.
+ */
+int usb_device_select_interface(usb_device_t *dev, uint8_t alternate_setting,
+    usb_endpoint_description_t **endpoints)
+{
+	if (dev->interface_no < 0) {
+		return EINVAL;
+	}
+
+	int rc;
+
+	/* Destroy existing pipes. */
+	rc = destroy_current_pipes(dev);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Change the interface itself. */
+	rc = usb_request_set_interface(&dev->ctrl_pipe, dev->interface_no,
+	    alternate_setting);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Create new pipes. */
+	rc = initialize_other_pipes(endpoints, dev, (int) alternate_setting);
+
+	return rc;
+}
+
+/** Retrieve basic descriptors from the device.
+ *
+ * @param[in] ctrl_pipe Control endpoint pipe.
+ * @param[out] descriptors Where to store the descriptors.
+ * @return Error code.
+ */
+int usb_device_retrieve_descriptors(usb_pipe_t *ctrl_pipe,
+    usb_device_descriptors_t *descriptors)
+{
+	assert(descriptors != NULL);
+
+	descriptors->configuration = NULL;
+
+	int rc;
+
+	/* It is worth to start a long transfer. */
+	usb_pipe_start_long_transfer(ctrl_pipe);
+
+	/* Get the device descriptor. */
+	rc = usb_request_get_device_descriptor(ctrl_pipe, &descriptors->device);
+	if (rc != EOK) {
+		goto leave;
+	}
+
+	/* Get the full configuration descriptor. */
+	rc = usb_request_get_full_configuration_descriptor_alloc(
+	    ctrl_pipe, 0, (void **) &descriptors->configuration,
+	    &descriptors->configuration_size);
+
+leave:
+	usb_pipe_end_long_transfer(ctrl_pipe);
+
+	return rc;
+}
+
+/** Create pipes for a device.
+ *
+ * This is more or less a wrapper that does following actions:
+ * - allocate and initialize pipes
+ * - map endpoints to the pipes based on the descriptions
+ * - registers endpoints with the host controller
+ *
+ * @param[in] dev Generic DDF device backing the USB one.
+ * @param[in] wire Initialized backing connection to the host controller.
+ * @param[in] endpoints Endpoints description, NULL terminated.
+ * @param[in] config_descr Configuration descriptor of active configuration.
+ * @param[in] config_descr_size Size of @p config_descr in bytes.
+ * @param[in] interface_no Interface to map from.
+ * @param[in] interface_setting Interface setting (default is usually 0).
+ * @param[out] pipes_ptr Where to store array of created pipes
+ *	(not NULL terminated).
+ * @param[out] pipes_count_ptr Where to store number of pipes
+ *	(set to if you wish to ignore the count).
+ * @return Error code.
+ */
+int usb_device_create_pipes(ddf_dev_t *dev, usb_device_connection_t *wire,
+    usb_endpoint_description_t **endpoints,
+    uint8_t *config_descr, size_t config_descr_size,
+    int interface_no, int interface_setting,
+    usb_endpoint_mapping_t **pipes_ptr, size_t *pipes_count_ptr)
+{
+	assert(dev != NULL);
+	assert(wire != NULL);
+	assert(endpoints != NULL);
+	assert(config_descr != NULL);
+	assert(config_descr_size > 0);
+	assert(pipes_ptr != NULL);
+
+	size_t i;
+	int rc;
+
+	size_t pipe_count = count_other_pipes(endpoints);
+	if (pipe_count == 0) {
+		*pipes_ptr = NULL;
+		return EOK;
+	}
+
+	usb_endpoint_mapping_t *pipes
+	    = malloc(sizeof(usb_endpoint_mapping_t) * pipe_count);
+	if (pipes == NULL) {
+		return ENOMEM;
+	}
+
+	/* Initialize to NULL to allow smooth rollback. */
+	for (i = 0; i < pipe_count; i++) {
+		pipes[i].pipe = NULL;
+	}
+
+	/* Now allocate and fully initialize. */
+	for (i = 0; i < pipe_count; i++) {
+		pipes[i].pipe = malloc(sizeof(usb_pipe_t));
+		if (pipes[i].pipe == NULL) {
+			rc = ENOMEM;
+			goto rollback_free_only;
+		}
+		pipes[i].description = endpoints[i];
+		pipes[i].interface_no = interface_no;
+		pipes[i].interface_setting = interface_setting;
+	}
+
+	/* Find the mapping from configuration descriptor. */
+	rc = usb_pipe_initialize_from_configuration(pipes, pipe_count,
+	    config_descr, config_descr_size, wire);
+	if (rc != EOK) {
+		goto rollback_free_only;
+	}
+
+	/* Register the endpoints with HC. */
+	usb_hc_connection_t hc_conn;
+	rc = usb_hc_connection_initialize_from_device(&hc_conn, dev);
+	if (rc != EOK) {
+		goto rollback_free_only;
+	}
+
+	rc = usb_hc_connection_open(&hc_conn);
+	if (rc != EOK) {
+		goto rollback_free_only;
+	}
+
+	for (i = 0; i < pipe_count; i++) {
+		if (pipes[i].present) {
+			rc = usb_pipe_register(pipes[i].pipe,
+			    pipes[i].descriptor->poll_interval, &hc_conn);
+			if (rc != EOK) {
+				goto rollback_unregister_endpoints;
+			}
+		}
+	}
+
+	usb_hc_connection_close(&hc_conn);
+
+	*pipes_ptr = pipes;
+	if (pipes_count_ptr != NULL) {
+		*pipes_count_ptr = pipe_count;
+	}
+
+	return EOK;
+
+	/*
+	 * Jump here if something went wrong after endpoints have
+	 * been registered.
+	 * This is also the target when the registration of
+	 * endpoints fails.
+	 */
+rollback_unregister_endpoints:
+	for (i = 0; i < pipe_count; i++) {
+		if (pipes[i].present) {
+			usb_pipe_unregister(pipes[i].pipe, &hc_conn);
+		}
+	}
+
+	usb_hc_connection_close(&hc_conn);
+
+	/*
+	 * Jump here if something went wrong before some actual communication
+	 * with HC. Then the only thing that needs to be done is to free
+	 * allocated memory.
+	 */
+rollback_free_only:
+	for (i = 0; i < pipe_count; i++) {
+		if (pipes[i].pipe != NULL) {
+			free(pipes[i].pipe);
+		}
+	}
+	free(pipes);
+
+	return rc;
+}
+
+/** Destroy pipes previously created by usb_device_create_pipes.
+ *
+ * @param[in] dev Generic DDF device backing the USB one.
+ * @param[in] pipes Endpoint mapping to be destroyed.
+ * @param[in] pipes_count Number of endpoints.
+ */
+int usb_device_destroy_pipes(ddf_dev_t *dev,
+    usb_endpoint_mapping_t *pipes, size_t pipes_count)
+{
+	assert(dev != NULL);
+	assert(((pipes != NULL) && (pipes_count > 0))
+	    || ((pipes == NULL) && (pipes_count == 0)));
+
+	if (pipes_count == 0) {
+		return EOK;
+	}
+
+	int rc;
+
+	/* Prepare connection to HC to allow endpoint unregistering. */
+	usb_hc_connection_t hc_conn;
+	rc = usb_hc_connection_initialize_from_device(&hc_conn, dev);
+	if (rc != EOK) {
+		return rc;
+	}
+	rc = usb_hc_connection_open(&hc_conn);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Destroy the pipes. */
+	size_t i;
+	for (i = 0; i < pipes_count; i++) {
+		usb_pipe_unregister(pipes[i].pipe, &hc_conn);
+		free(pipes[i].pipe);
+	}
+
+	usb_hc_connection_close(&hc_conn);
+
+	free(pipes);
+
+	return EOK;
+}
+
+/** Initialize control pipe in a device.
+ *
+ * @param dev USB device in question.
+ * @param errmsg Where to store error context.
+ * @return
+ */
+static int init_wire_and_ctrl_pipe(usb_device_t *dev, const char **errmsg)
+{
+	int rc;
+
+	rc = usb_device_connection_initialize_from_device(&dev->wire,
+	    dev->ddf_dev);
+	if (rc != EOK) {
+		*errmsg = "device connection initialization";
+		return rc;
+	}
+
+	rc = usb_pipe_initialize_default_control(&dev->ctrl_pipe,
+	    &dev->wire);
+	if (rc != EOK) {
+		*errmsg = "default control pipe initialization";
+		return rc;
+	}
+
+	return EOK;
+}
+
+
+/** Create new instance of USB device.
+ *
+ * @param[in] ddf_dev Generic DDF device backing the USB one.
+ * @param[in] endpoints NULL terminated array of endpoints (NULL for none).
+ * @param[out] dev_ptr Where to store pointer to the new device.
+ * @param[out] errstr_ptr Where to store description of context
+ *	(in case error occurs).
+ * @return Error code.
+ */
+int usb_device_create(ddf_dev_t *ddf_dev,
+    usb_endpoint_description_t **endpoints,
+    usb_device_t **dev_ptr, const char **errstr_ptr)
+{
+	assert(dev_ptr != NULL);
+	assert(ddf_dev != NULL);
+
+	int rc;
+
+	usb_device_t *dev = malloc(sizeof(usb_device_t));
+	if (dev == NULL) {
+		*errstr_ptr = "structure allocation";
+		return ENOMEM;
+	}
+
+	// FIXME: proper deallocation in case of errors
+
+	dev->ddf_dev = ddf_dev;
+	dev->driver_data = NULL;
+	dev->descriptors.configuration = NULL;
+	dev->alternate_interfaces = NULL;
+
+	dev->pipes_count = 0;
+	dev->pipes = NULL;
+
+	/* Initialize backing wire and control pipe. */
+	rc = init_wire_and_ctrl_pipe(dev, errstr_ptr);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Get our interface. */
+	dev->interface_no = usb_device_get_assigned_interface(dev->ddf_dev);
+
+	/* Retrieve standard descriptors. */
+	rc = usb_device_retrieve_descriptors(&dev->ctrl_pipe,
+	    &dev->descriptors);
+	if (rc != EOK) {
+		*errstr_ptr = "descriptor retrieval";
+		return rc;
+	}
+
+	/* Create alternate interfaces. */
+	rc = usb_alternate_interfaces_create(dev->descriptors.configuration,
+	    dev->descriptors.configuration_size, dev->interface_no,
+	    &dev->alternate_interfaces);
+	if (rc != EOK) {
+		/* We will try to silently ignore this. */
+		dev->alternate_interfaces = NULL;
+	}
+
+	rc = initialize_other_pipes(endpoints, dev, 0);
+	if (rc != EOK) {
+		*errstr_ptr = "pipes initialization";
+		return rc;
+	}
+
+	*errstr_ptr = NULL;
+	*dev_ptr = dev;
+
+	return EOK;
+}
+
+/** Destroy instance of a USB device.
+ *
+ * @param dev Device to be destroyed.
+ */
+void usb_device_destroy(usb_device_t *dev)
+{
+	if (dev == NULL) {
+		return;
+	}
+
+	/* Ignore errors and hope for the best. */
+	usb_device_destroy_pipes(dev->ddf_dev, dev->pipes, dev->pipes_count);
+	if (dev->descriptors.configuration != NULL) {
+		free(dev->descriptors.configuration);
+	}
+
+	if (dev->alternate_interfaces != NULL) {
+		if (dev->alternate_interfaces->alternatives != NULL) {
+			free(dev->alternate_interfaces->alternatives);
+		}
+		free(dev->alternate_interfaces);
+	}
+
+	free(dev);
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/devpoll.c
===================================================================
--- uspace/lib/usbdev/src/devpoll.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/devpoll.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,317 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * USB device driver framework - automatic interrupt polling.
+ */
+#include <usb/dev/poll.h>
+#include <usb/dev/request.h>
+#include <usb/debug.h>
+#include <usb/classes/classes.h>
+#include <errno.h>
+#include <str_error.h>
+#include <assert.h>
+
+/** Maximum number of failed consecutive requests before announcing failure. */
+#define MAX_FAILED_ATTEMPTS 3
+
+/** Data needed for polling. */
+typedef struct {
+	int debug;
+	size_t max_failures;
+	useconds_t delay;
+	bool auto_clear_halt;
+	bool (*on_data)(usb_device_t *, uint8_t *, size_t, void *);
+	void (*on_polling_end)(usb_device_t *, bool, void *);
+	bool (*on_error)(usb_device_t *, int, void *);
+
+	usb_device_t *dev;
+	size_t pipe_index;
+	size_t request_size;
+	uint8_t *buffer;
+	void *custom_arg;
+} polling_data_t;
+
+
+/** Polling fibril.
+ *
+ * @param arg Pointer to polling_data_t.
+ * @return Always EOK.
+ */
+static int polling_fibril(void *arg)
+{
+	polling_data_t *polling_data = (polling_data_t *) arg;
+	assert(polling_data);
+
+	usb_pipe_t *pipe
+	    = polling_data->dev->pipes[polling_data->pipe_index].pipe;
+	
+	if (polling_data->debug > 0) {
+		usb_endpoint_mapping_t *mapping
+		    = &polling_data->dev->pipes[polling_data->pipe_index];
+		usb_log_debug("Poll%p: started polling of `%s' - " \
+		    "interface %d (%s,%d,%d), %zuB/%zu.\n",
+		    polling_data,
+		    polling_data->dev->ddf_dev->name,
+		    (int) mapping->interface->interface_number,
+		    usb_str_class(mapping->interface->interface_class),
+		    (int) mapping->interface->interface_subclass,
+		    (int) mapping->interface->interface_protocol,
+		    polling_data->request_size, pipe->max_packet_size);
+	}
+
+	size_t failed_attempts = 0;
+	while (failed_attempts <= polling_data->max_failures) {
+		int rc;
+
+		size_t actual_size;
+		rc = usb_pipe_read(pipe, polling_data->buffer,
+		    polling_data->request_size, &actual_size);
+
+		if (polling_data->debug > 1) {
+			if (rc == EOK) {
+				usb_log_debug(
+				    "Poll%p: received: '%s' (%zuB).\n",
+				    polling_data,
+				    usb_debug_str_buffer(polling_data->buffer,
+				        actual_size, 16),
+				    actual_size);
+			} else {
+				usb_log_debug(
+				    "Poll%p: polling failed: %s.\n",
+				    polling_data, str_error(rc));
+			}
+		}
+
+		/* If the pipe stalled, we can try to reset the stall. */
+		if ((rc == ESTALL) && (polling_data->auto_clear_halt)) {
+			/*
+			 * We ignore error here as this is usually a futile
+			 * attempt anyway.
+			 */
+			usb_request_clear_endpoint_halt(
+			    &polling_data->dev->ctrl_pipe,
+			    pipe->endpoint_no);
+		}
+
+		if (rc != EOK) {
+			if (polling_data->on_error != NULL) {
+				bool cont = polling_data->on_error(
+				    polling_data->dev, rc,
+				    polling_data->custom_arg);
+				if (!cont) {
+					failed_attempts
+					    = polling_data->max_failures;
+				}
+			}
+			failed_attempts++;
+			continue;
+		}
+
+		/* We have the data, execute the callback now. */
+		bool carry_on = polling_data->on_data(polling_data->dev,
+		    polling_data->buffer, actual_size,
+		    polling_data->custom_arg);
+
+		if (!carry_on) {
+			failed_attempts = 0;
+			break;
+		}
+
+		/* Reset as something might be only a temporary problem. */
+		failed_attempts = 0;
+
+		/* Take a rest before next request. */
+		async_usleep(polling_data->delay);
+	}
+
+	if (polling_data->on_polling_end != NULL) {
+		polling_data->on_polling_end(polling_data->dev,
+		    failed_attempts > 0, polling_data->custom_arg);
+	}
+
+	if (polling_data->debug > 0) {
+		if (failed_attempts > 0) {
+			usb_log_error(
+			    "Polling of device `%s' terminated: %s.\n",
+			    polling_data->dev->ddf_dev->name,
+			    "recurring failures");
+		} else {
+			usb_log_debug(
+			    "Polling of device `%s' terminated by user.\n",
+			    polling_data->dev->ddf_dev->name
+			);
+		}
+	}
+
+	/* Free the allocated memory. */
+	free(polling_data->buffer);
+	free(polling_data);
+
+	return EOK;
+}
+
+/** Start automatic device polling over interrupt in pipe.
+ *
+ * @warning It is up to the callback to produce delays between individual
+ * requests.
+ *
+ * @warning There is no guarantee when the request to the device
+ * will be sent for the first time (it is possible that this
+ * first request would be executed prior to return from this function).
+ *
+ * @param dev Device to be periodically polled.
+ * @param pipe_index Index of the endpoint pipe used for polling.
+ * @param callback Callback when data are available.
+ * @param request_size How many bytes to ask for in each request.
+ * @param terminated_callback Callback when polling is terminated.
+ * @param arg Custom argument (passed as is to the callbacks).
+ * @return Error code.
+ * @retval EOK New fibril polling the device was already started.
+ */
+int usb_device_auto_poll(usb_device_t *dev, size_t pipe_index,
+    usb_polling_callback_t callback, size_t request_size,
+    usb_polling_terminted_callback_t terminated_callback, void *arg)
+{
+	if ((dev == NULL) || (callback == NULL)) {
+		return EBADMEM;
+	}
+	if (request_size == 0) {
+		return EINVAL;
+	}
+	if ((dev->pipes[pipe_index].pipe->transfer_type != USB_TRANSFER_INTERRUPT)
+	    || (dev->pipes[pipe_index].pipe->direction != USB_DIRECTION_IN)) {
+		return EINVAL;
+	}
+
+	usb_device_auto_polling_t *auto_polling
+	    = malloc(sizeof(usb_device_auto_polling_t));
+	if (auto_polling == NULL) {
+		return ENOMEM;
+	}
+
+	auto_polling->debug = 1;
+	auto_polling->auto_clear_halt = true;
+	auto_polling->delay = 0;
+	auto_polling->max_failures = MAX_FAILED_ATTEMPTS;
+	auto_polling->on_data = callback;
+	auto_polling->on_polling_end = terminated_callback;
+	auto_polling->on_error = NULL;
+
+	int rc = usb_device_auto_polling(dev, pipe_index, auto_polling,
+	   request_size, arg);
+
+	free(auto_polling);
+
+	return rc;
+}
+
+/** Start automatic device polling over interrupt in pipe.
+ *
+ * The polling settings is copied thus it is okay to destroy the structure
+ * after this function returns.
+ *
+ * @warning There is no guarantee when the request to the device
+ * will be sent for the first time (it is possible that this
+ * first request would be executed prior to return from this function).
+ *
+ * @param dev Device to be periodically polled.
+ * @param pipe_index Index of the endpoint pipe used for polling.
+ * @param polling Polling settings.
+ * @param request_size How many bytes to ask for in each request.
+ * @param arg Custom argument (passed as is to the callbacks).
+ * @return Error code.
+ * @retval EOK New fibril polling the device was already started.
+ */
+int usb_device_auto_polling(usb_device_t *dev, size_t pipe_index,
+    usb_device_auto_polling_t *polling,
+    size_t request_size, void *arg)
+{
+	if (dev == NULL) {
+		return EBADMEM;
+	}
+	if (pipe_index >= dev->pipes_count) {
+		return EINVAL;
+	}
+	if ((dev->pipes[pipe_index].pipe->transfer_type != USB_TRANSFER_INTERRUPT)
+	    || (dev->pipes[pipe_index].pipe->direction != USB_DIRECTION_IN)) {
+		return EINVAL;
+	}
+	if ((polling == NULL) || (polling->on_data == NULL)) {
+		return EBADMEM;
+	}
+
+	polling_data_t *polling_data = malloc(sizeof(polling_data_t));
+	if (polling_data == NULL) {
+		return ENOMEM;
+	}
+
+	/* Fill-in the data. */
+	polling_data->buffer = malloc(sizeof(request_size));
+	if (polling_data->buffer == NULL) {
+		free(polling_data);
+		return ENOMEM;
+	}
+	polling_data->request_size = request_size;
+	polling_data->dev = dev;
+	polling_data->pipe_index = pipe_index;
+	polling_data->custom_arg = arg;
+
+	polling_data->debug = polling->debug;
+	polling_data->max_failures = polling->max_failures;
+	if (polling->delay >= 0) {
+		polling_data->delay = (useconds_t) polling->delay;
+	} else {
+		polling_data->delay = (useconds_t) dev->pipes[pipe_index]
+		    .descriptor->poll_interval;
+	}
+	polling_data->auto_clear_halt = polling->auto_clear_halt;
+
+	polling_data->on_data = polling->on_data;
+	polling_data->on_polling_end = polling->on_polling_end;
+	polling_data->on_error = polling->on_error;
+
+	fid_t fibril = fibril_create(polling_fibril, polling_data);
+	if (fibril == 0) {
+		free(polling_data->buffer);
+		free(polling_data);
+		return ENOMEM;
+	}
+	fibril_add_ready(fibril);
+
+	/* Fibril launched. That fibril will free the allocated data. */
+
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/dp.c
===================================================================
--- uspace/lib/usbdev/src/dp.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/dp.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,326 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/**
+ * @file
+ * USB descriptor parser (implementation).
+ *
+ * The descriptor parser is a generic parser for structure, where individual
+ * items are stored in single buffer and each item begins with length followed
+ * by type. These types are organized into tree hierarchy.
+ *
+ * The parser is able of only two actions: find first child and find next
+ * sibling.
+ */
+#include <stdio.h>
+#include <str_error.h>
+#include <errno.h>
+#include <assert.h>
+#include <bool.h>
+#include <usb/dev/dp.h>
+#include <usb/descriptor.h>
+
+#define NESTING(parentname, childname) \
+	{ \
+		.child = USB_DESCTYPE_##childname, \
+		.parent = USB_DESCTYPE_##parentname, \
+	}
+#define LAST_NESTING { -1, -1 }
+
+/** Nesting of standard USB descriptors. */
+usb_dp_descriptor_nesting_t usb_dp_standard_descriptor_nesting[] = {
+	NESTING(CONFIGURATION, INTERFACE),
+	NESTING(INTERFACE, ENDPOINT),
+	NESTING(INTERFACE, HUB),
+	NESTING(INTERFACE, HID),
+	NESTING(HID, HID_REPORT),
+	LAST_NESTING
+};
+
+#undef NESTING
+#undef LAST_NESTING
+
+/** Tells whether pointer points inside descriptor data.
+ *
+ * @param data Parser data.
+ * @param ptr Pointer to be verified.
+ * @return Whether @p ptr points inside <code>data->data</code> field.
+ */
+static bool is_valid_descriptor_pointer(usb_dp_parser_data_t *data,
+    uint8_t *ptr)
+{
+	if (ptr == NULL) {
+		return false;
+	}
+
+	if (ptr < data->data) {
+		return false;
+	}
+
+	if ((size_t)(ptr - data->data) >= data->size) {
+		return false;
+	}
+
+	return true;
+}
+
+/** Get next descriptor regardless of the nesting.
+ *
+ * @param data Parser data.
+ * @param current Pointer to current descriptor.
+ * @return Pointer to start of next descriptor.
+ * @retval NULL Invalid input or no next descriptor.
+ */
+static uint8_t *get_next_descriptor(usb_dp_parser_data_t *data,
+    uint8_t *current)
+{
+	assert(is_valid_descriptor_pointer(data, current));
+
+	uint8_t current_length = *current;
+	uint8_t *next = current + current_length;
+
+	if (!is_valid_descriptor_pointer(data, next)) {
+		return NULL;
+	}
+
+	return next;
+}
+
+/** Get descriptor type.
+ *
+ * @see usb_descriptor_type_t
+ *
+ * @param data Parser data.
+ * @param start Pointer to start of the descriptor.
+ * @return Descriptor type.
+ * @retval -1 Invalid input.
+ */
+static int get_descriptor_type(usb_dp_parser_data_t *data, uint8_t *start)
+{
+	if (start == NULL) {
+		return -1;
+	}
+
+	start++;
+	if (!is_valid_descriptor_pointer(data, start)) {
+		return -1;
+	} else {
+		return (int) (*start);
+	}
+}
+
+/** Tells whether descriptors could be nested.
+ *
+ * @param parser Parser.
+ * @param child Child descriptor type.
+ * @param parent Parent descriptor type.
+ * @return Whether @p child could be child of @p parent.
+ */
+static bool is_nested_descriptor_type(usb_dp_parser_t *parser,
+    int child, int parent)
+{
+	usb_dp_descriptor_nesting_t *nesting = parser->nesting;
+	while ((nesting->child > 0) && (nesting->parent > 0)) {
+		if ((nesting->child == child) && (nesting->parent == parent)) {
+			return true;
+		}
+		nesting++;
+	}
+	return false;
+}
+
+/** Tells whether descriptors could be nested.
+ *
+ * @param parser Parser.
+ * @param data Parser data.
+ * @param child Pointer to child descriptor.
+ * @param parent Pointer to parent descriptor.
+ * @return Whether @p child could be child of @p parent.
+ */
+static bool is_nested_descriptor(usb_dp_parser_t *parser,
+    usb_dp_parser_data_t *data, uint8_t *child, uint8_t *parent)
+{
+	return is_nested_descriptor_type(parser,
+	    get_descriptor_type(data, child),
+	    get_descriptor_type(data, parent));
+}
+
+/** Find first nested descriptor of given parent.
+ *
+ * @param parser Parser.
+ * @param data Parser data.
+ * @param parent Pointer to the beginning of parent descriptor.
+ * @return Pointer to the beginning of the first nested (child) descriptor.
+ * @retval NULL No child descriptor found.
+ * @retval NULL Invalid input.
+ */
+uint8_t *usb_dp_get_nested_descriptor(usb_dp_parser_t *parser,
+    usb_dp_parser_data_t *data, uint8_t *parent)
+{
+	if (!is_valid_descriptor_pointer(data, parent)) {
+		return NULL;
+	}
+
+	uint8_t *next = get_next_descriptor(data, parent);
+	if (next == NULL) {
+		return NULL;
+	}
+
+	if (is_nested_descriptor(parser, data, next, parent)) {
+		return next;
+	} else {
+		return NULL;
+	}
+}
+
+/** Skip all nested descriptors.
+ *
+ * @param parser Parser.
+ * @param data Parser data.
+ * @param parent Pointer to the beginning of parent descriptor.
+ * @return Pointer to first non-child descriptor.
+ * @retval NULL No next descriptor.
+ * @retval NULL Invalid input.
+ */
+static uint8_t *skip_nested_descriptors(usb_dp_parser_t *parser,
+    usb_dp_parser_data_t *data, uint8_t *parent)
+{
+	uint8_t *child = usb_dp_get_nested_descriptor(parser, data, parent);
+	if (child == NULL) {
+		return get_next_descriptor(data, parent);
+	}
+	uint8_t *next_child = skip_nested_descriptors(parser, data, child);
+	while (is_nested_descriptor(parser, data, next_child, parent)) {
+		next_child = skip_nested_descriptors(parser, data, next_child);
+	}
+
+	return next_child;
+}
+
+/** Get sibling descriptor.
+ *
+ * @param parser Parser.
+ * @param data Parser data.
+ * @param parent Pointer to common parent descriptor.
+ * @param sibling Left sibling.
+ * @return Pointer to first right sibling of @p sibling.
+ * @retval NULL No sibling exist.
+ * @retval NULL Invalid input.
+ */
+uint8_t *usb_dp_get_sibling_descriptor(usb_dp_parser_t *parser,
+    usb_dp_parser_data_t *data, uint8_t *parent, uint8_t *sibling)
+{
+	if (!is_valid_descriptor_pointer(data, parent)
+	    || !is_valid_descriptor_pointer(data, sibling)) {
+		return NULL;
+	}
+
+	uint8_t *possible_sibling = skip_nested_descriptors(parser, data, sibling);
+	if (possible_sibling == NULL) {
+		return NULL;
+	}
+
+	int parent_type = get_descriptor_type(data, parent);
+	int possible_sibling_type = get_descriptor_type(data, possible_sibling);
+	if (is_nested_descriptor_type(parser, possible_sibling_type, parent_type)) {
+		return possible_sibling;
+	} else {
+		return NULL;
+	}
+}
+
+/** Browser of the descriptor tree.
+ *
+ * @see usb_dp_walk_simple
+ *
+ * @param parser Descriptor parser.
+ * @param data Data for descriptor parser.
+ * @param root Pointer to current root of the tree.
+ * @param depth Current nesting depth.
+ * @param callback Callback for each found descriptor.
+ * @param arg Custom (user) argument.
+ */
+static void usb_dp_browse_simple_internal(usb_dp_parser_t *parser,
+    usb_dp_parser_data_t *data, uint8_t *root, size_t depth,
+    void (*callback)(uint8_t *, size_t, void *), void *arg)
+{
+	if (root == NULL) {
+		return;
+	}
+	callback(root, depth, arg);
+	uint8_t *child = usb_dp_get_nested_descriptor(parser, data, root);
+	do {
+		usb_dp_browse_simple_internal(parser, data, child, depth + 1,
+		    callback, arg);
+		child = usb_dp_get_sibling_descriptor(parser, data,
+		    root, child);
+	} while (child != NULL);
+}
+
+/** Browse flatten descriptor tree.
+ *
+ * The callback is called with following arguments: pointer to the start
+ * of the descriptor (somewhere inside @p descriptors), depth of the nesting
+ * (starting from 0 for the first descriptor) and the custom argument.
+ * Note that the size of the descriptor is not passed because it can
+ * be read from the first byte of the descriptor.
+ *
+ * @param descriptors Descriptor data.
+ * @param descriptors_size Size of descriptor data (in bytes).
+ * @param descriptor_nesting Possible descriptor nesting.
+ * @param callback Callback for each found descriptor.
+ * @param arg Custom (user) argument.
+ */
+void usb_dp_walk_simple(uint8_t *descriptors, size_t descriptors_size,
+    usb_dp_descriptor_nesting_t *descriptor_nesting,
+    void (*callback)(uint8_t *, size_t, void *), void *arg)
+{
+	if ((descriptors == NULL) || (descriptors_size == 0)
+	    || (descriptor_nesting == NULL) || (callback == NULL)) {
+		return;
+	}
+
+	usb_dp_parser_data_t data = {
+		.data = descriptors,
+		.size = descriptors_size,
+		.arg = NULL
+	};
+
+	usb_dp_parser_t parser = {
+		.nesting = descriptor_nesting
+	};
+
+	usb_dp_browse_simple_internal(&parser, &data, descriptors,
+	    0, callback, arg);
+}
+
+/** @}
+ */
Index: uspace/lib/usbdev/src/hub.c
===================================================================
--- uspace/lib/usbdev/src/hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/hub.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,367 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Functions needed by hub drivers.
+ */
+#include <usb/dev/hub.h>
+#include <usb/dev/pipes.h>
+#include <usb/dev/request.h>
+#include <usb/dev/recognise.h>
+#include <usbhc_iface.h>
+#include <errno.h>
+#include <assert.h>
+#include <usb/debug.h>
+#include <time.h>
+
+/** How much time to wait between attempts to register endpoint 0:0.
+ * The value is based on typical value for port reset + some overhead.
+ */
+#define ENDPOINT_0_0_REGISTER_ATTEMPT_DELAY_USEC (1000 * (10 + 2))
+
+/** Check that HC connection is alright.
+ *
+ * @param conn Connection to be checked.
+ */
+#define CHECK_CONNECTION(conn) \
+	do { \
+		assert((conn)); \
+		if (!usb_hc_connection_is_opened((conn))) { \
+			return ENOENT; \
+		} \
+	} while (false)
+
+/** Ask host controller for free address assignment.
+ *
+ * @param connection Opened connection to host controller.
+ * @param speed Speed of the new device (device that will be assigned
+ *    the returned address).
+ * @return Assigned USB address or negative error code.
+ */
+usb_address_t usb_hc_request_address(usb_hc_connection_t *connection,
+    usb_speed_t speed)
+{
+	CHECK_CONNECTION(connection);
+
+	sysarg_t address;
+	int rc = async_req_2_1(connection->hc_phone,
+	    DEV_IFACE_ID(USBHC_DEV_IFACE),
+	    IPC_M_USBHC_REQUEST_ADDRESS, speed,
+	    &address);
+	if (rc != EOK) {
+		return (usb_address_t) rc;
+	} else {
+		return (usb_address_t) address;
+	}
+}
+
+/** Inform host controller about new device.
+ *
+ * @param connection Opened connection to host controller.
+ * @param attached_device Information about the new device.
+ * @return Error code.
+ */
+int usb_hc_register_device(usb_hc_connection_t * connection,
+    const usb_hc_attached_device_t *attached_device)
+{
+	CHECK_CONNECTION(connection);
+	if (attached_device == NULL) {
+		return EBADMEM;
+	}
+
+	return async_req_3_0(connection->hc_phone,
+	    DEV_IFACE_ID(USBHC_DEV_IFACE),
+	    IPC_M_USBHC_BIND_ADDRESS,
+	    attached_device->address, attached_device->handle);
+}
+
+/** Inform host controller about device removal.
+ *
+ * @param connection Opened connection to host controller.
+ * @param address Address of the device that is being removed.
+ * @return Error code.
+ */
+int usb_hc_unregister_device(usb_hc_connection_t *connection,
+    usb_address_t address)
+{
+	CHECK_CONNECTION(connection);
+
+	return async_req_2_0(connection->hc_phone,
+	    DEV_IFACE_ID(USBHC_DEV_IFACE),
+	    IPC_M_USBHC_RELEASE_ADDRESS, address);
+}
+
+
+static void unregister_control_endpoint_on_default_address(
+    usb_hc_connection_t *connection)
+{
+	usb_device_connection_t dev_conn;
+	int rc = usb_device_connection_initialize_on_default_address(&dev_conn,
+	    connection);
+	if (rc != EOK) {
+		return;
+	}
+
+	usb_pipe_t ctrl_pipe;
+	rc = usb_pipe_initialize_default_control(&ctrl_pipe, &dev_conn);
+	if (rc != EOK) {
+		return;
+	}
+
+	usb_pipe_unregister(&ctrl_pipe, connection);
+}
+
+
+/** Wrapper for registering attached device to the hub.
+ *
+ * The @p enable_port function is expected to enable signaling on given
+ * port.
+ * The two arguments to it can have arbitrary meaning
+ * (the @p port_no is only a suggestion)
+ * and are not touched at all by this function
+ * (they are passed as is to the @p enable_port function).
+ *
+ * If the @p enable_port fails (i.e. does not return EOK), the device
+ * addition is canceled.
+ * The return value is then returned (it is good idea to use different
+ * error codes than those listed as return codes by this function itself).
+ *
+ * The @p connection representing connection with host controller does not
+ * need to be started.
+ * This function duplicates the connection to allow simultaneous calls of
+ * this function (i.e. from different fibrils).
+ *
+ * @param[in] parent Parent device (i.e. the hub device).
+ * @param[in] connection Connection to host controller.
+ * @param[in] dev_speed New device speed.
+ * @param[in] enable_port Function for enabling signaling through the port the
+ *	device is attached to.
+ * @param[in] port_no Port number (passed through to @p enable_port).
+ * @param[in] arg Any data argument to @p enable_port.
+ * @param[out] assigned_address USB address of the device.
+ * @param[out] assigned_handle Devman handle of the new device.
+ * @param[in] dev_ops Child device ops.
+ * @param[in] new_dev_data Arbitrary pointer to be stored in the child
+ *	as @c driver_data.
+ * @param[out] new_fun Storage where pointer to allocated child function
+ *	will be written.
+ * @return Error code.
+ * @retval ENOENT Connection to HC not opened.
+ * @retval EADDRNOTAVAIL Failed retrieving free address from host controller.
+ * @retval EBUSY Failed reserving default USB address.
+ * @retval ENOTCONN Problem connecting to the host controller via USB pipe.
+ * @retval ESTALL Problem communication with device (either SET_ADDRESS
+ *	request or requests for descriptors when creating match ids).
+ */
+int usb_hc_new_device_wrapper(ddf_dev_t *parent, usb_hc_connection_t *connection,
+    usb_speed_t dev_speed,
+    int (*enable_port)(int port_no, void *arg), int port_no, void *arg,
+    usb_address_t *assigned_address, devman_handle_t *assigned_handle,
+    ddf_dev_ops_t *dev_ops, void *new_dev_data, ddf_fun_t **new_fun)
+{
+	assert(connection != NULL);
+	// FIXME: this is awful, we are accessing directly the structure.
+	usb_hc_connection_t hc_conn = {
+		.hc_handle = connection->hc_handle,
+		.hc_phone = -1
+	};
+
+	int rc;
+	struct timeval start_time;
+
+	rc = gettimeofday(&start_time, NULL);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	rc = usb_hc_connection_open(&hc_conn);
+	if (rc != EOK) {
+		return rc;
+	}
+
+
+	/*
+	 * Request new address.
+	 */
+	usb_address_t dev_addr = usb_hc_request_address(&hc_conn, dev_speed);
+	if (dev_addr < 0) {
+		usb_hc_connection_close(&hc_conn);
+		return EADDRNOTAVAIL;
+	}
+
+	/*
+	 * We will not register control pipe on default address.
+	 * The registration might fail. That means that someone else already
+	 * registered that endpoint. We will simply wait and try again.
+	 * (Someone else already wants to add a new device.)
+	 */
+	usb_device_connection_t dev_conn;
+	rc = usb_device_connection_initialize_on_default_address(&dev_conn,
+	    &hc_conn);
+	if (rc != EOK) {
+		rc = ENOTCONN;
+		goto leave_release_free_address;
+	}
+
+	usb_pipe_t ctrl_pipe;
+	rc = usb_pipe_initialize_default_control(&ctrl_pipe,
+	    &dev_conn);
+	if (rc != EOK) {
+		rc = ENOTCONN;
+		goto leave_release_free_address;
+	}
+
+	do {
+		rc = usb_pipe_register_with_speed(&ctrl_pipe, dev_speed, 0,
+		    &hc_conn);
+		if (rc != EOK) {
+			/* Do not overheat the CPU ;-). */
+			async_usleep(ENDPOINT_0_0_REGISTER_ATTEMPT_DELAY_USEC);
+		}
+	} while (rc != EOK);
+	struct timeval end_time;
+
+	rc = gettimeofday(&end_time, NULL);
+	if (rc != EOK) {
+		goto leave_release_default_address;
+	}
+
+	/* According to the USB spec part 9.1.2 host allows 100ms time for
+	 * the insertion process to complete. According to 7.1.7.1 this is the
+	 * time between attach detected and port reset. However, the setup done
+	 * above might use much of this time so we should only wait to fill
+	 * up the 100ms quota*/
+	suseconds_t elapsed = tv_sub(&end_time, &start_time);
+	if (elapsed < 100000) {
+		async_usleep(100000 - elapsed);
+	}
+
+	/*
+	 * Endpoint is registered. We can enable the port and change
+	 * device address.
+	 */
+	rc = enable_port(port_no, arg);
+	if (rc != EOK) {
+		goto leave_release_default_address;
+	}
+	/* USB spec 7.1.7.1: The USB System Software guarantees a minimum of
+	 * 10ms for reset recovery. Device response to any bus transactions
+	 * addressed to the default device address during the reset recovery
+	 * time is undefined.
+	 */
+	async_usleep(10000);
+
+	rc = usb_pipe_probe_default_control(&ctrl_pipe);
+	if (rc != EOK) {
+		rc = ESTALL;
+		goto leave_release_default_address;
+	}
+
+	rc = usb_request_set_address(&ctrl_pipe, dev_addr);
+	if (rc != EOK) {
+		rc = ESTALL;
+		goto leave_release_default_address;
+	}
+
+	/*
+	 * Address changed. We can release the original endpoint, thus
+	 * allowing other to access the default address.
+	 */
+	unregister_control_endpoint_on_default_address(&hc_conn);
+
+	/*
+	 * Time to register the new endpoint.
+	 */
+	rc = usb_pipe_register(&ctrl_pipe, 0, &hc_conn);
+	if (rc != EOK) {
+		goto leave_release_free_address;
+	}
+
+	/*
+	 * It is time to register the device with devman.
+	 */
+	/* FIXME: create device_register that will get opened ctrl pipe. */
+	devman_handle_t child_handle;
+	rc = usb_device_register_child_in_devman(dev_addr, dev_conn.hc_handle,
+	    parent, &child_handle,
+	    dev_ops, new_dev_data, new_fun);
+	if (rc != EOK) {
+		rc = ESTALL;
+		goto leave_release_free_address;
+	}
+
+	/*
+	 * And now inform the host controller about the handle.
+	 */
+	usb_hc_attached_device_t new_device = {
+		.address = dev_addr,
+		.handle = child_handle
+	};
+	rc = usb_hc_register_device(&hc_conn, &new_device);
+	if (rc != EOK) {
+		rc = EDESTADDRREQ;
+		goto leave_release_free_address;
+	}
+	
+	usb_hc_connection_close(&hc_conn);
+
+	/*
+	 * And we are done.
+	 */
+	if (assigned_address != NULL) {
+		*assigned_address = dev_addr;
+	}
+	if (assigned_handle != NULL) {
+		*assigned_handle = child_handle;
+	}
+
+	return EOK;
+
+
+
+	/*
+	 * Error handling (like nested exceptions) starts here.
+	 * Completely ignoring errors here.
+	 */
+leave_release_default_address:
+	usb_pipe_unregister(&ctrl_pipe, &hc_conn);
+
+leave_release_free_address:
+	usb_hc_unregister_device(&hc_conn, dev_addr);
+
+	usb_hc_connection_close(&hc_conn);
+
+	return rc;
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/pipepriv.c
===================================================================
--- uspace/lib/usbdev/src/pipepriv.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/pipepriv.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Library internal functions on USB pipes (implementation).
+ */
+#include "pipepriv.h"
+#include <devman.h>
+#include <errno.h>
+#include <assert.h>
+
+/** Ensure exclusive access to the IPC phone of given pipe.
+ *
+ * @param pipe Pipe to be exclusively accessed.
+ */
+void pipe_start_transaction(usb_pipe_t *pipe)
+{
+	fibril_mutex_lock(&pipe->hc_phone_mutex);
+}
+
+/** Terminate exclusive access to the IPC phone of given pipe.
+ *
+ * @param pipe Pipe to be released from exclusive usage.
+ */
+void pipe_end_transaction(usb_pipe_t *pipe)
+{
+	fibril_mutex_unlock(&pipe->hc_phone_mutex);
+}
+
+/** Ensure exclusive access to the pipe as a whole.
+ *
+ * @param pipe Pipe to be exclusively accessed.
+ */
+void pipe_acquire(usb_pipe_t *pipe)
+{
+	fibril_mutex_lock(&pipe->guard);
+}
+
+/** Terminate exclusive access to the pipe as a whole.
+ *
+ * @param pipe Pipe to be released from exclusive usage.
+ */
+void pipe_release(usb_pipe_t *pipe)
+{
+	fibril_mutex_unlock(&pipe->guard);
+}
+
+/** Add reference of active transfers over the pipe.
+ *
+ * @param pipe The USB pipe.
+ * @param hide_failure Whether to hide failure when adding reference
+ *	(use soft refcount).
+ * @return Error code.
+ * @retval EOK Currently always.
+ */
+int pipe_add_ref(usb_pipe_t *pipe, bool hide_failure)
+{
+	pipe_acquire(pipe);
+
+	if (pipe->refcount == 0) {
+		/* Need to open the phone by ourselves. */
+		int phone = devman_device_connect(pipe->wire->hc_handle, 0);
+		if (phone < 0) {
+			if (hide_failure) {
+				pipe->refcount_soft++;
+				phone = EOK;
+			}
+			pipe_release(pipe);
+			return phone;
+		}
+		/*
+		 * No locking is needed, refcount is zero and whole pipe
+		 * mutex is locked.
+		 */
+		pipe->hc_phone = phone;
+	}
+	pipe->refcount++;
+
+	pipe_release(pipe);
+
+	return EOK;
+}
+
+/** Drop active transfer reference on the pipe.
+ *
+ * @param pipe The USB pipe.
+ */
+void pipe_drop_ref(usb_pipe_t *pipe)
+{
+	pipe_acquire(pipe);
+	if (pipe->refcount_soft > 0) {
+		pipe->refcount_soft--;
+		pipe_release(pipe);
+		return;
+	}
+	assert(pipe->refcount > 0);
+	pipe->refcount--;
+	if (pipe->refcount == 0) {
+		/* We were the last users, let's hang-up. */
+		async_hangup(pipe->hc_phone);
+		pipe->hc_phone = -1;
+	}
+	pipe_release(pipe);
+}
+
+
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/pipepriv.h
===================================================================
--- uspace/lib/usbdev/src/pipepriv.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/pipepriv.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Library internal functions on USB pipes.
+ */
+#ifndef LIBUSBDEV_PIPEPRIV_H_
+#define LIBUSBDEV_PIPEPRIV_H_
+
+#include <usb/dev/pipes.h>
+#include <bool.h>
+
+void pipe_acquire(usb_pipe_t *);
+void pipe_release(usb_pipe_t *);
+
+void pipe_start_transaction(usb_pipe_t *);
+void pipe_end_transaction(usb_pipe_t *);
+
+int pipe_add_ref(usb_pipe_t *, bool);
+void pipe_drop_ref(usb_pipe_t *);
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/pipes.c
===================================================================
--- uspace/lib/usbdev/src/pipes.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/pipes.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,232 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * USB endpoint pipes miscellaneous functions.
+ */
+#include <usb/usb.h>
+#include <usb/dev/pipes.h>
+#include <usb/debug.h>
+#include <usb/hc.h>
+#include <usbhc_iface.h>
+#include <usb_iface.h>
+#include <devman.h>
+#include <errno.h>
+#include <assert.h>
+#include "pipepriv.h"
+
+#define IPC_AGAIN_DELAY (1000 * 2) /* 2ms */
+
+/** Tell USB address assigned to given device.
+ *
+ * @param phone Phone to parent device.
+ * @param dev Device in question.
+ * @return USB address or error code.
+ */
+static usb_address_t get_my_address(int phone, ddf_dev_t *dev)
+{
+	sysarg_t address;
+
+	/*
+	 * We are sending special value as a handle - zero - to get
+	 * handle of the parent function (that handle was used
+	 * when registering our device @p dev.
+	 */
+	int rc = async_req_2_1(phone, DEV_IFACE_ID(USB_DEV_IFACE),
+	    IPC_M_USB_GET_ADDRESS,
+	    0, &address);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	return (usb_address_t) address;
+}
+
+/** Tell USB interface assigned to given device.
+ *
+ * @param device Device in question.
+ * @return Interface number (negative code means any).
+ */
+int usb_device_get_assigned_interface(ddf_dev_t *device)
+{
+	int parent_phone = devman_parent_device_connect(device->handle,
+	    IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return -1;
+	}
+
+	sysarg_t iface_no;
+	int rc = async_req_2_1(parent_phone, DEV_IFACE_ID(USB_DEV_IFACE),
+	    IPC_M_USB_GET_INTERFACE,
+	    device->handle, &iface_no);
+
+	async_hangup(parent_phone);
+
+	if (rc != EOK) {
+		return -1;
+	}
+
+	return (int) iface_no;
+}
+
+/** Initialize connection to USB device.
+ *
+ * @param connection Connection structure to be initialized.
+ * @param dev Generic device backing the USB device.
+ * @return Error code.
+ */
+int usb_device_connection_initialize_from_device(
+    usb_device_connection_t *connection, ddf_dev_t *dev)
+{
+	assert(connection);
+	assert(dev);
+
+	int rc;
+	devman_handle_t hc_handle;
+	usb_address_t my_address;
+
+	rc = usb_hc_find(dev->handle, &hc_handle);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	int parent_phone = devman_parent_device_connect(dev->handle,
+	    IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+	/*
+	 * Asking for "my" address may require several attempts.
+	 * That is because following scenario may happen:
+	 *  - parent driver (i.e. driver of parent device) announces new device
+	 *    and devman launches current driver
+	 *  - parent driver is preempted and thus does not send address-handle
+	 *    binding to HC driver
+	 *  - this driver gets here and wants the binding
+	 *  - the HC does not know the binding yet and thus it answers ENOENT
+	 *  So, we need to wait for the HC to learn the binding.
+	 */
+	do {
+		my_address = get_my_address(parent_phone, dev);
+
+		if (my_address == ENOENT) {
+			/* Be nice, let other fibrils run and try again. */
+			async_usleep(IPC_AGAIN_DELAY);
+		} else if (my_address < 0) {
+			/* Some other problem, no sense trying again. */
+			rc = my_address;
+			goto leave;
+		}
+
+	} while (my_address < 0);
+
+	rc = usb_device_connection_initialize(connection,
+	    hc_handle, my_address);
+
+leave:
+	async_hangup(parent_phone);
+	return rc;
+}
+
+/** Initialize connection to USB device.
+ *
+ * @param connection Connection structure to be initialized.
+ * @param host_controller_handle Devman handle of host controller device is
+ * 	connected to.
+ * @param device_address Device USB address.
+ * @return Error code.
+ */
+int usb_device_connection_initialize(usb_device_connection_t *connection,
+    devman_handle_t host_controller_handle, usb_address_t device_address)
+{
+	assert(connection);
+
+	if ((device_address < 0) || (device_address >= USB11_ADDRESS_MAX)) {
+		return EINVAL;
+	}
+
+	connection->hc_handle = host_controller_handle;
+	connection->address = device_address;
+
+	return EOK;
+}
+
+/** Initialize connection to USB device on default address.
+ *
+ * @param dev_connection Device connection structure to be initialized.
+ * @param hc_connection Initialized connection to host controller.
+ * @return Error code.
+ */
+int usb_device_connection_initialize_on_default_address(
+    usb_device_connection_t *dev_connection,
+    usb_hc_connection_t *hc_connection)
+{
+	assert(dev_connection);
+
+	if (hc_connection == NULL) {
+		return EBADMEM;
+	}
+
+	return usb_device_connection_initialize(dev_connection,
+	    hc_connection->hc_handle, (usb_address_t) 0);
+}
+
+/** Prepare pipe for a long transfer.
+ *
+ * By a long transfer is mean transfer consisting of several
+ * requests to the HC.
+ * Calling such function is optional and it has positive effect of
+ * improved performance because IPC session is initiated only once.
+ *
+ * @param pipe Pipe over which the transfer will happen.
+ * @return Error code.
+ */
+void usb_pipe_start_long_transfer(usb_pipe_t *pipe)
+{
+	(void) pipe_add_ref(pipe, true);
+}
+
+/** Terminate a long transfer on a pipe.
+ *
+ * @see usb_pipe_start_long_transfer
+ *
+ * @param pipe Pipe where to end the long transfer.
+ */
+void usb_pipe_end_long_transfer(usb_pipe_t *pipe)
+{
+	pipe_drop_ref(pipe);
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/pipesinit.c
===================================================================
--- uspace/lib/usbdev/src/pipesinit.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/pipesinit.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,525 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Initialization of endpoint pipes.
+ *
+ */
+#include <usb/usb.h>
+#include <usb/dev/pipes.h>
+#include <usb/dev/dp.h>
+#include <usb/dev/request.h>
+#include <usbhc_iface.h>
+#include <errno.h>
+#include <assert.h>
+
+#define CTRL_PIPE_MIN_PACKET_SIZE 8
+#define DEV_DESCR_MAX_PACKET_SIZE_OFFSET 7
+
+
+#define NESTING(parentname, childname) \
+	{ \
+		.child = USB_DESCTYPE_##childname, \
+		.parent = USB_DESCTYPE_##parentname, \
+	}
+#define LAST_NESTING { -1, -1 }
+
+/** Nesting pairs of standard descriptors. */
+static usb_dp_descriptor_nesting_t descriptor_nesting[] = {
+	NESTING(CONFIGURATION, INTERFACE),
+	NESTING(INTERFACE, ENDPOINT),
+	NESTING(INTERFACE, HUB),
+	NESTING(INTERFACE, HID),
+	NESTING(HID, HID_REPORT),
+	LAST_NESTING
+};
+
+/** Tells whether given descriptor is of endpoint type.
+ *
+ * @param descriptor Descriptor in question.
+ * @return Whether the given descriptor is endpoint descriptor.
+ */
+static inline bool is_endpoint_descriptor(uint8_t *descriptor)
+{
+	return descriptor[1] == USB_DESCTYPE_ENDPOINT;
+}
+
+/** Tells whether found endpoint corresponds to endpoint described by user.
+ *
+ * @param wanted Endpoint description as entered by driver author.
+ * @param found Endpoint description obtained from endpoint descriptor.
+ * @return Whether the @p found descriptor fits the @p wanted descriptor.
+ */
+static bool endpoint_fits_description(const usb_endpoint_description_t *wanted,
+    usb_endpoint_description_t *found)
+{
+#define _SAME(fieldname) ((wanted->fieldname) == (found->fieldname))
+
+	if (!_SAME(direction)) {
+		return false;
+	}
+
+	if (!_SAME(transfer_type)) {
+		return false;
+	}
+
+	if ((wanted->interface_class >= 0) && !_SAME(interface_class)) {
+		return false;
+	}
+
+	if ((wanted->interface_subclass >= 0) && !_SAME(interface_subclass)) {
+		return false;
+	}
+
+	if ((wanted->interface_protocol >= 0) && !_SAME(interface_protocol)) {
+		return false;
+	}
+
+#undef _SAME
+
+	return true;
+}
+
+/** Find endpoint mapping for a found endpoint.
+ *
+ * @param mapping Endpoint mapping list.
+ * @param mapping_count Number of endpoint mappings in @p mapping.
+ * @param found_endpoint Description of found endpoint.
+ * @param interface_number Number of currently processed interface.
+ * @return Endpoint mapping corresponding to @p found_endpoint.
+ * @retval NULL No corresponding endpoint found.
+ */
+static usb_endpoint_mapping_t *find_endpoint_mapping(
+    usb_endpoint_mapping_t *mapping, size_t mapping_count,
+    usb_endpoint_description_t *found_endpoint,
+    int interface_number, int interface_setting)
+{
+	while (mapping_count > 0) {
+		bool interface_number_fits = (mapping->interface_no < 0)
+		    || (mapping->interface_no == interface_number);
+
+		bool interface_setting_fits = (mapping->interface_setting < 0)
+		    || (mapping->interface_setting == interface_setting);
+
+		bool endpoint_descriptions_fits = endpoint_fits_description(
+		    mapping->description, found_endpoint);
+
+		if (interface_number_fits
+		    && interface_setting_fits
+		    && endpoint_descriptions_fits) {
+			return mapping;
+		}
+
+		mapping++;
+		mapping_count--;
+	}
+	return NULL;
+}
+
+/** Process endpoint descriptor.
+ *
+ * @param mapping Endpoint mapping list.
+ * @param mapping_count Number of endpoint mappings in @p mapping.
+ * @param interface Interface descriptor under which belongs the @p endpoint.
+ * @param endpoint Endpoint descriptor.
+ * @param wire Connection backing the endpoint pipes.
+ * @return Error code.
+ */
+static int process_endpoint(
+    usb_endpoint_mapping_t *mapping, size_t mapping_count,
+    usb_standard_interface_descriptor_t *interface,
+    usb_standard_endpoint_descriptor_t *endpoint,
+    usb_device_connection_t *wire)
+{
+	usb_endpoint_description_t description;
+
+	/*
+	 * Get endpoint characteristics.
+	 */
+
+	/* Actual endpoint number is in bits 0..3 */
+	usb_endpoint_t ep_no = endpoint->endpoint_address & 0x0F;
+
+	/* Endpoint direction is set by bit 7 */
+	description.direction = (endpoint->endpoint_address & 128)
+	    ? USB_DIRECTION_IN : USB_DIRECTION_OUT;
+	/* Transfer type is in bits 0..2 and the enum values corresponds 1:1 */
+	description.transfer_type = endpoint->attributes & 3;
+
+	/*
+	 * Get interface characteristics.
+	 */
+	description.interface_class = interface->interface_class;
+	description.interface_subclass = interface->interface_subclass;
+	description.interface_protocol = interface->interface_protocol;
+
+	/*
+	 * Find the most fitting mapping and initialize the pipe.
+	 */
+	usb_endpoint_mapping_t *ep_mapping = find_endpoint_mapping(mapping,
+	    mapping_count, &description,
+	    interface->interface_number, interface->alternate_setting);
+	if (ep_mapping == NULL) {
+		return ENOENT;
+	}
+
+	if (ep_mapping->pipe == NULL) {
+		return EBADMEM;
+	}
+	if (ep_mapping->present) {
+		return EEXISTS;
+	}
+
+	int rc = usb_pipe_initialize(ep_mapping->pipe, wire,
+	    ep_no, description.transfer_type, endpoint->max_packet_size,
+	    description.direction);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	ep_mapping->present = true;
+	ep_mapping->descriptor = endpoint;
+	ep_mapping->interface = interface;
+
+	return EOK;
+}
+
+/** Process whole USB interface.
+ *
+ * @param mapping Endpoint mapping list.
+ * @param mapping_count Number of endpoint mappings in @p mapping.
+ * @param parser Descriptor parser.
+ * @param parser_data Descriptor parser data.
+ * @param interface_descriptor Interface descriptor.
+ * @return Error code.
+ */
+static int process_interface(
+    usb_endpoint_mapping_t *mapping, size_t mapping_count,
+    usb_dp_parser_t *parser, usb_dp_parser_data_t *parser_data,
+    uint8_t *interface_descriptor)
+{
+	uint8_t *descriptor = usb_dp_get_nested_descriptor(parser,
+	    parser_data, interface_descriptor);
+
+	if (descriptor == NULL) {
+		return ENOENT;
+	}
+
+	do {
+		if (is_endpoint_descriptor(descriptor)) {
+			(void) process_endpoint(mapping, mapping_count,
+			    (usb_standard_interface_descriptor_t *)
+			        interface_descriptor,
+			    (usb_standard_endpoint_descriptor_t *)
+			        descriptor,
+			    (usb_device_connection_t *) parser_data->arg);
+		}
+
+		descriptor = usb_dp_get_sibling_descriptor(parser, parser_data,
+		    interface_descriptor, descriptor);
+	} while (descriptor != NULL);
+
+	return EOK;
+}
+
+/** Initialize endpoint pipes from configuration descriptor.
+ *
+ * The mapping array is expected to conform to following rules:
+ * - @c pipe must point to already allocated structure with uninitialized pipe
+ * - @c description must point to prepared endpoint description
+ * - @c descriptor does not need to be initialized (will be overwritten)
+ * - @c interface does not need to be initialized (will be overwritten)
+ * - @c present does not need to be initialized (will be overwritten)
+ *
+ * After processing the configuration descriptor, the mapping is updated
+ * in the following fashion:
+ * - @c present will be set to @c true when the endpoint was found in the
+ *   configuration
+ * - @c descriptor will point inside the configuration descriptor to endpoint
+ *   corresponding to given description (or NULL for not found descriptor)
+ * - @c interface will point inside the configuration descriptor to interface
+ *   descriptor the endpoint @c descriptor belongs to (or NULL for not found
+ *   descriptor)
+ * - @c pipe will be initialized when found, otherwise left untouched
+ * - @c description will be untouched under all circumstances
+ *
+ * @param mapping Endpoint mapping list.
+ * @param mapping_count Number of endpoint mappings in @p mapping.
+ * @param configuration_descriptor Full configuration descriptor (is expected
+ *	to be in USB endianness: i.e. as-is after being retrieved from
+ *	the device).
+ * @param configuration_descriptor_size Size of @p configuration_descriptor
+ *	in bytes.
+ * @param connection Connection backing the endpoint pipes.
+ * @return Error code.
+ */
+int usb_pipe_initialize_from_configuration(
+    usb_endpoint_mapping_t *mapping, size_t mapping_count,
+    uint8_t *configuration_descriptor, size_t configuration_descriptor_size,
+    usb_device_connection_t *connection)
+{
+	assert(connection);
+
+	if (configuration_descriptor == NULL) {
+		return EBADMEM;
+	}
+	if (configuration_descriptor_size
+	    < sizeof(usb_standard_configuration_descriptor_t)) {
+		return ERANGE;
+	}
+
+	/*
+	 * Go through the mapping and set all endpoints to not present.
+	 */
+	size_t i;
+	for (i = 0; i < mapping_count; i++) {
+		mapping[i].present = false;
+		mapping[i].descriptor = NULL;
+		mapping[i].interface = NULL;
+	}
+
+	/*
+	 * Prepare the descriptor parser.
+	 */
+	usb_dp_parser_t dp_parser = {
+		.nesting = descriptor_nesting
+	};
+	usb_dp_parser_data_t dp_data = {
+		.data = configuration_descriptor,
+		.size = configuration_descriptor_size,
+		.arg = connection
+	};
+
+	/*
+	 * Iterate through all interfaces.
+	 */
+	uint8_t *interface = usb_dp_get_nested_descriptor(&dp_parser,
+	    &dp_data, configuration_descriptor);
+	if (interface == NULL) {
+		return ENOENT;
+	}
+	do {
+		(void) process_interface(mapping, mapping_count,
+		    &dp_parser, &dp_data,
+		    interface);
+		interface = usb_dp_get_sibling_descriptor(&dp_parser, &dp_data,
+		    configuration_descriptor, interface);
+	} while (interface != NULL);
+
+	return EOK;
+}
+
+/** Initialize USB endpoint pipe.
+ *
+ * @param pipe Endpoint pipe to be initialized.
+ * @param connection Connection to the USB device backing this pipe (the wire).
+ * @param endpoint_no Endpoint number (in USB 1.1 in range 0 to 15).
+ * @param transfer_type Transfer type (e.g. interrupt or bulk).
+ * @param max_packet_size Maximum packet size in bytes.
+ * @param direction Endpoint direction (in/out).
+ * @return Error code.
+ */
+int usb_pipe_initialize(usb_pipe_t *pipe,
+    usb_device_connection_t *connection, usb_endpoint_t endpoint_no,
+    usb_transfer_type_t transfer_type, size_t max_packet_size,
+    usb_direction_t direction)
+{
+	assert(pipe);
+	assert(connection);
+
+	fibril_mutex_initialize(&pipe->guard);
+	pipe->wire = connection;
+	pipe->hc_phone = -1;
+	fibril_mutex_initialize(&pipe->hc_phone_mutex);
+	pipe->endpoint_no = endpoint_no;
+	pipe->transfer_type = transfer_type;
+	pipe->max_packet_size = max_packet_size;
+	pipe->direction = direction;
+	pipe->refcount = 0;
+	pipe->refcount_soft = 0;
+	pipe->auto_reset_halt = false;
+
+	return EOK;
+}
+
+
+/** Initialize USB endpoint pipe as the default zero control pipe.
+ *
+ * @param pipe Endpoint pipe to be initialized.
+ * @param connection Connection to the USB device backing this pipe (the wire).
+ * @return Error code.
+ */
+int usb_pipe_initialize_default_control(usb_pipe_t *pipe,
+    usb_device_connection_t *connection)
+{
+	assert(pipe);
+	assert(connection);
+
+	int rc = usb_pipe_initialize(pipe, connection,
+	    0, USB_TRANSFER_CONTROL, CTRL_PIPE_MIN_PACKET_SIZE,
+	    USB_DIRECTION_BOTH);
+
+	pipe->auto_reset_halt = true;
+
+	return rc;
+}
+
+/** Probe default control pipe for max packet size.
+ *
+ * The function tries to get the correct value of max packet size several
+ * time before giving up.
+ *
+ * The session on the pipe shall not be started.
+ *
+ * @param pipe Default control pipe.
+ * @return Error code.
+ */
+int usb_pipe_probe_default_control(usb_pipe_t *pipe)
+{
+	assert(pipe);
+	assert(DEV_DESCR_MAX_PACKET_SIZE_OFFSET < CTRL_PIPE_MIN_PACKET_SIZE);
+
+	if ((pipe->direction != USB_DIRECTION_BOTH) ||
+	    (pipe->transfer_type != USB_TRANSFER_CONTROL) ||
+	    (pipe->endpoint_no != 0)) {
+		return EINVAL;
+	}
+
+#define TRY_LOOP(attempt_var) \
+	for (attempt_var = 0; attempt_var < 3; attempt_var++)
+
+	size_t failed_attempts;
+	int rc;
+
+	usb_pipe_start_long_transfer(pipe);
+
+	uint8_t dev_descr_start[CTRL_PIPE_MIN_PACKET_SIZE];
+	size_t transferred_size;
+	TRY_LOOP(failed_attempts) {
+		rc = usb_request_get_descriptor(pipe, USB_REQUEST_TYPE_STANDARD,
+		    USB_REQUEST_RECIPIENT_DEVICE, USB_DESCTYPE_DEVICE,
+		    0, 0, dev_descr_start, CTRL_PIPE_MIN_PACKET_SIZE,
+		    &transferred_size);
+		if (rc == EOK) {
+			if (transferred_size != CTRL_PIPE_MIN_PACKET_SIZE) {
+				rc = ELIMIT;
+				continue;
+			}
+			break;
+		}
+	}
+	usb_pipe_end_long_transfer(pipe);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	pipe->max_packet_size
+	    = dev_descr_start[DEV_DESCR_MAX_PACKET_SIZE_OFFSET];
+
+	return EOK;
+}
+
+/** Register endpoint with the host controller.
+ *
+ * @param pipe Pipe to be registered.
+ * @param interval Polling interval.
+ * @param hc_connection Connection to the host controller (must be opened).
+ * @return Error code.
+ */
+int usb_pipe_register(usb_pipe_t *pipe,
+    unsigned int interval,
+    usb_hc_connection_t *hc_connection)
+{
+	return usb_pipe_register_with_speed(pipe, USB_SPEED_MAX + 1,
+	    interval, hc_connection);
+}
+
+/** Register endpoint with a speed at the host controller.
+ *
+ * You will rarely need to use this function because it is needed only
+ * if the registered endpoint is of address 0 and there is no other way
+ * to tell speed of the device at address 0.
+ *
+ * @param pipe Pipe to be registered.
+ * @param speed Speed of the device
+ *	(invalid speed means use previously specified one).
+ * @param interval Polling interval.
+ * @param hc_connection Connection to the host controller (must be opened).
+ * @return Error code.
+ */
+int usb_pipe_register_with_speed(usb_pipe_t *pipe, usb_speed_t speed,
+    unsigned int interval,
+    usb_hc_connection_t *hc_connection)
+{
+	assert(pipe);
+	assert(hc_connection);
+
+	if (!usb_hc_connection_is_opened(hc_connection)) {
+		return EBADF;
+	}
+
+#define _PACK2(high, low) (((high) << 16) + (low))
+#define _PACK3(high, middle, low) (((((high) << 8) + (middle)) << 8) + (low))
+
+	return async_req_4_0(hc_connection->hc_phone,
+	    DEV_IFACE_ID(USBHC_DEV_IFACE), IPC_M_USBHC_REGISTER_ENDPOINT,
+	    _PACK2(pipe->wire->address, pipe->endpoint_no),
+	    _PACK3(speed, pipe->transfer_type, pipe->direction),
+	    _PACK2(pipe->max_packet_size, interval));
+
+#undef _PACK2
+#undef _PACK3
+}
+
+/** Revert endpoint registration with the host controller.
+ *
+ * @param pipe Pipe to be unregistered.
+ * @param hc_connection Connection to the host controller (must be opened).
+ * @return Error code.
+ */
+int usb_pipe_unregister(usb_pipe_t *pipe,
+    usb_hc_connection_t *hc_connection)
+{
+	assert(pipe);
+	assert(hc_connection);
+
+	if (!usb_hc_connection_is_opened(hc_connection)) {
+		return EBADF;
+	}
+
+	return async_req_4_0(hc_connection->hc_phone,
+	    DEV_IFACE_ID(USBHC_DEV_IFACE), IPC_M_USBHC_UNREGISTER_ENDPOINT,
+	    pipe->wire->address, pipe->endpoint_no, pipe->direction);
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/pipesio.c
===================================================================
--- uspace/lib/usbdev/src/pipesio.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/pipesio.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,601 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Input and output functions (reads and writes) on endpoint pipes.
+ *
+ * Note on synchronousness of the operations: there is ABSOLUTELY NO
+ * guarantee that a call to particular function will not trigger a fibril
+ * switch.
+ *
+ * Note about the implementation: the transfer requests are always divided
+ * into two functions.
+ * The outer one does checking of input parameters (e.g. that session was
+ * already started, buffers are not NULL etc), while the inner one
+ * (with _no_checks suffix) does the actual IPC (it checks for IPC errors,
+ * obviously).
+ */
+#include <usb/usb.h>
+#include <usb/dev/pipes.h>
+#include <errno.h>
+#include <assert.h>
+#include <usbhc_iface.h>
+#include <usb/dev/request.h>
+#include "pipepriv.h"
+
+/** Request an in transfer, no checking of input parameters.
+ *
+ * @param[in] pipe Pipe used for the transfer.
+ * @param[out] buffer Buffer where to store the data.
+ * @param[in] size Size of the buffer (in bytes).
+ * @param[out] size_transfered Number of bytes that were actually transfered.
+ * @return Error code.
+ */
+static int usb_pipe_read_no_checks(usb_pipe_t *pipe,
+    void *buffer, size_t size, size_t *size_transfered)
+{
+	/*
+	 * Get corresponding IPC method.
+	 * In future, replace with static array of mappings
+	 * transfer type -> method.
+	 */
+	usbhc_iface_funcs_t ipc_method;
+	switch (pipe->transfer_type) {
+		case USB_TRANSFER_INTERRUPT:
+			ipc_method = IPC_M_USBHC_INTERRUPT_IN;
+			break;
+		case USB_TRANSFER_BULK:
+			ipc_method = IPC_M_USBHC_BULK_IN;
+			break;
+		default:
+			return ENOTSUP;
+	}
+
+	/* Ensure serialization over the phone. */
+	pipe_start_transaction(pipe);
+
+	/*
+	 * Make call identifying target USB device and type of transfer.
+	 */
+	aid_t opening_request = async_send_3(pipe->hc_phone,
+	    DEV_IFACE_ID(USBHC_DEV_IFACE), ipc_method,
+	    pipe->wire->address, pipe->endpoint_no,
+	    NULL);
+	if (opening_request == 0) {
+		pipe_end_transaction(pipe);
+		return ENOMEM;
+	}
+
+	/*
+	 * Retrieve the data.
+	 */
+	ipc_call_t data_request_call;
+	aid_t data_request = async_data_read(pipe->hc_phone, buffer, size,
+	    &data_request_call);
+
+	/*
+	 * Since now on, someone else might access the backing phone
+	 * without breaking the transfer IPC protocol.
+	 */
+	pipe_end_transaction(pipe);
+
+	if (data_request == 0) {
+		/*
+		 * FIXME:
+		 * How to let the other side know that we want to abort?
+		 */
+		async_wait_for(opening_request, NULL);
+		return ENOMEM;
+	}
+
+	/*
+	 * Wait for the answer.
+	 */
+	sysarg_t data_request_rc;
+	sysarg_t opening_request_rc;
+	async_wait_for(data_request, &data_request_rc);
+	async_wait_for(opening_request, &opening_request_rc);
+
+	if (data_request_rc != EOK) {
+		/* Prefer the return code of the opening request. */
+		if (opening_request_rc != EOK) {
+			return (int) opening_request_rc;
+		} else {
+			return (int) data_request_rc;
+		}
+	}
+	if (opening_request_rc != EOK) {
+		return (int) opening_request_rc;
+	}
+
+	*size_transfered = IPC_GET_ARG2(data_request_call);
+
+	return EOK;
+}
+
+
+/** Request a read (in) transfer on an endpoint pipe.
+ *
+ * @param[in] pipe Pipe used for the transfer.
+ * @param[out] buffer Buffer where to store the data.
+ * @param[in] size Size of the buffer (in bytes).
+ * @param[out] size_transfered Number of bytes that were actually transfered.
+ * @return Error code.
+ */
+int usb_pipe_read(usb_pipe_t *pipe,
+    void *buffer, size_t size, size_t *size_transfered)
+{
+	assert(pipe);
+
+	if (buffer == NULL) {
+		return EINVAL;
+	}
+
+	if (size == 0) {
+		return EINVAL;
+	}
+
+	if (pipe->direction != USB_DIRECTION_IN) {
+		return EBADF;
+	}
+
+	if (pipe->transfer_type == USB_TRANSFER_CONTROL) {
+		return EBADF;
+	}
+
+	int rc;
+	rc = pipe_add_ref(pipe, false);
+	if (rc != EOK) {
+		return rc;
+	}
+
+
+	size_t act_size = 0;
+
+	rc = usb_pipe_read_no_checks(pipe, buffer, size, &act_size);
+
+	pipe_drop_ref(pipe);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	if (size_transfered != NULL) {
+		*size_transfered = act_size;
+	}
+
+	return EOK;
+}
+
+
+
+
+/** Request an out transfer, no checking of input parameters.
+ *
+ * @param[in] pipe Pipe used for the transfer.
+ * @param[in] buffer Buffer with data to transfer.
+ * @param[in] size Size of the buffer (in bytes).
+ * @return Error code.
+ */
+static int usb_pipe_write_no_check(usb_pipe_t *pipe,
+    void *buffer, size_t size)
+{
+	/*
+	 * Get corresponding IPC method.
+	 * In future, replace with static array of mappings
+	 * transfer type -> method.
+	 */
+	usbhc_iface_funcs_t ipc_method;
+	switch (pipe->transfer_type) {
+		case USB_TRANSFER_INTERRUPT:
+			ipc_method = IPC_M_USBHC_INTERRUPT_OUT;
+			break;
+		case USB_TRANSFER_BULK:
+			ipc_method = IPC_M_USBHC_BULK_OUT;
+			break;
+		default:
+			return ENOTSUP;
+	}
+
+	/* Ensure serialization over the phone. */
+	pipe_start_transaction(pipe);
+
+	/*
+	 * Make call identifying target USB device and type of transfer.
+	 */
+	aid_t opening_request = async_send_3(pipe->hc_phone,
+	    DEV_IFACE_ID(USBHC_DEV_IFACE), ipc_method,
+	    pipe->wire->address, pipe->endpoint_no,
+	    NULL);
+	if (opening_request == 0) {
+		pipe_end_transaction(pipe);
+		return ENOMEM;
+	}
+
+	/*
+	 * Send the data.
+	 */
+	int rc = async_data_write_start(pipe->hc_phone, buffer, size);
+
+	/*
+	 * Since now on, someone else might access the backing phone
+	 * without breaking the transfer IPC protocol.
+	 */
+	pipe_end_transaction(pipe);
+
+	if (rc != EOK) {
+		async_wait_for(opening_request, NULL);
+		return rc;
+	}
+
+	/*
+	 * Wait for the answer.
+	 */
+	sysarg_t opening_request_rc;
+	async_wait_for(opening_request, &opening_request_rc);
+
+	return (int) opening_request_rc;
+}
+
+/** Request a write (out) transfer on an endpoint pipe.
+ *
+ * @param[in] pipe Pipe used for the transfer.
+ * @param[in] buffer Buffer with data to transfer.
+ * @param[in] size Size of the buffer (in bytes).
+ * @return Error code.
+ */
+int usb_pipe_write(usb_pipe_t *pipe,
+    void *buffer, size_t size)
+{
+	assert(pipe);
+
+	if (buffer == NULL) {
+		return EINVAL;
+	}
+
+	if (size == 0) {
+		return EINVAL;
+	}
+
+	if (pipe->direction != USB_DIRECTION_OUT) {
+		return EBADF;
+	}
+
+	if (pipe->transfer_type == USB_TRANSFER_CONTROL) {
+		return EBADF;
+	}
+
+	int rc;
+
+	rc = pipe_add_ref(pipe, false);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	rc = usb_pipe_write_no_check(pipe, buffer, size);
+
+	pipe_drop_ref(pipe);
+
+	return rc;
+}
+
+/** Try to clear endpoint halt of default control pipe.
+ *
+ * @param pipe Pipe for control endpoint zero.
+ */
+static void clear_self_endpoint_halt(usb_pipe_t *pipe)
+{
+	assert(pipe != NULL);
+
+	if (!pipe->auto_reset_halt || (pipe->endpoint_no != 0)) {
+		return;
+	}
+
+
+	/* Prevent indefinite recursion. */
+	pipe->auto_reset_halt = false;
+	usb_request_clear_endpoint_halt(pipe, 0);
+	pipe->auto_reset_halt = true;
+}
+
+
+/** Request a control read transfer, no checking of input parameters.
+ *
+ * @param[in] pipe Pipe used for the transfer.
+ * @param[in] setup_buffer Buffer with the setup packet.
+ * @param[in] setup_buffer_size Size of the setup packet (in bytes).
+ * @param[out] data_buffer Buffer for incoming data.
+ * @param[in] data_buffer_size Size of the buffer for incoming data (in bytes).
+ * @param[out] data_transfered_size Number of bytes that were actually
+ *                                  transfered during the DATA stage.
+ * @return Error code.
+ */
+static int usb_pipe_control_read_no_check(usb_pipe_t *pipe,
+    void *setup_buffer, size_t setup_buffer_size,
+    void *data_buffer, size_t data_buffer_size, size_t *data_transfered_size)
+{
+	/* Ensure serialization over the phone. */
+	pipe_start_transaction(pipe);
+
+	/*
+	 * Make call identifying target USB device and control transfer type.
+	 */
+	aid_t opening_request = async_send_3(pipe->hc_phone,
+	    DEV_IFACE_ID(USBHC_DEV_IFACE), IPC_M_USBHC_CONTROL_READ,
+	    pipe->wire->address, pipe->endpoint_no,
+	    NULL);
+	if (opening_request == 0) {
+		return ENOMEM;
+	}
+
+	/*
+	 * Send the setup packet.
+	 */
+	int rc = async_data_write_start(pipe->hc_phone,
+	    setup_buffer, setup_buffer_size);
+	if (rc != EOK) {
+		pipe_end_transaction(pipe);
+		async_wait_for(opening_request, NULL);
+		return rc;
+	}
+
+	/*
+	 * Retrieve the data.
+	 */
+	ipc_call_t data_request_call;
+	aid_t data_request = async_data_read(pipe->hc_phone,
+	    data_buffer, data_buffer_size,
+	    &data_request_call);
+
+	/*
+	 * Since now on, someone else might access the backing phone
+	 * without breaking the transfer IPC protocol.
+	 */
+	pipe_end_transaction(pipe);
+
+
+	if (data_request == 0) {
+		async_wait_for(opening_request, NULL);
+		return ENOMEM;
+	}
+
+	/*
+	 * Wait for the answer.
+	 */
+	sysarg_t data_request_rc;
+	sysarg_t opening_request_rc;
+	async_wait_for(data_request, &data_request_rc);
+	async_wait_for(opening_request, &opening_request_rc);
+
+	if (data_request_rc != EOK) {
+		/* Prefer the return code of the opening request. */
+		if (opening_request_rc != EOK) {
+			return (int) opening_request_rc;
+		} else {
+			return (int) data_request_rc;
+		}
+	}
+	if (opening_request_rc != EOK) {
+		return (int) opening_request_rc;
+	}
+
+	*data_transfered_size = IPC_GET_ARG2(data_request_call);
+
+	return EOK;
+}
+
+/** Request a control read transfer on an endpoint pipe.
+ *
+ * This function encapsulates all three stages of a control transfer.
+ *
+ * @param[in] pipe Pipe used for the transfer.
+ * @param[in] setup_buffer Buffer with the setup packet.
+ * @param[in] setup_buffer_size Size of the setup packet (in bytes).
+ * @param[out] data_buffer Buffer for incoming data.
+ * @param[in] data_buffer_size Size of the buffer for incoming data (in bytes).
+ * @param[out] data_transfered_size Number of bytes that were actually
+ *                                  transfered during the DATA stage.
+ * @return Error code.
+ */
+int usb_pipe_control_read(usb_pipe_t *pipe,
+    void *setup_buffer, size_t setup_buffer_size,
+    void *data_buffer, size_t data_buffer_size, size_t *data_transfered_size)
+{
+	assert(pipe);
+
+	if ((setup_buffer == NULL) || (setup_buffer_size == 0)) {
+		return EINVAL;
+	}
+
+	if ((data_buffer == NULL) || (data_buffer_size == 0)) {
+		return EINVAL;
+	}
+
+	if ((pipe->direction != USB_DIRECTION_BOTH)
+	    || (pipe->transfer_type != USB_TRANSFER_CONTROL)) {
+		return EBADF;
+	}
+
+	int rc;
+
+	rc = pipe_add_ref(pipe, false);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	size_t act_size = 0;
+	rc = usb_pipe_control_read_no_check(pipe,
+	    setup_buffer, setup_buffer_size,
+	    data_buffer, data_buffer_size, &act_size);
+
+	if (rc == ESTALL) {
+		clear_self_endpoint_halt(pipe);
+	}
+
+	pipe_drop_ref(pipe);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	if (data_transfered_size != NULL) {
+		*data_transfered_size = act_size;
+	}
+
+	return EOK;
+}
+
+
+/** Request a control write transfer, no checking of input parameters.
+ *
+ * @param[in] pipe Pipe used for the transfer.
+ * @param[in] setup_buffer Buffer with the setup packet.
+ * @param[in] setup_buffer_size Size of the setup packet (in bytes).
+ * @param[in] data_buffer Buffer with data to be sent.
+ * @param[in] data_buffer_size Size of the buffer with outgoing data (in bytes).
+ * @return Error code.
+ */
+static int usb_pipe_control_write_no_check(usb_pipe_t *pipe,
+    void *setup_buffer, size_t setup_buffer_size,
+    void *data_buffer, size_t data_buffer_size)
+{
+	/* Ensure serialization over the phone. */
+	pipe_start_transaction(pipe);
+
+	/*
+	 * Make call identifying target USB device and control transfer type.
+	 */
+	aid_t opening_request = async_send_4(pipe->hc_phone,
+	    DEV_IFACE_ID(USBHC_DEV_IFACE), IPC_M_USBHC_CONTROL_WRITE,
+	    pipe->wire->address, pipe->endpoint_no,
+	    data_buffer_size,
+	    NULL);
+	if (opening_request == 0) {
+		pipe_end_transaction(pipe);
+		return ENOMEM;
+	}
+
+	/*
+	 * Send the setup packet.
+	 */
+	int rc = async_data_write_start(pipe->hc_phone,
+	    setup_buffer, setup_buffer_size);
+	if (rc != EOK) {
+		pipe_end_transaction(pipe);
+		async_wait_for(opening_request, NULL);
+		return rc;
+	}
+
+	/*
+	 * Send the data (if any).
+	 */
+	if (data_buffer_size > 0) {
+		rc = async_data_write_start(pipe->hc_phone,
+		    data_buffer, data_buffer_size);
+
+		/* All data sent, pipe can be released. */
+		pipe_end_transaction(pipe);
+
+		if (rc != EOK) {
+			async_wait_for(opening_request, NULL);
+			return rc;
+		}
+	} else {
+		/* No data to send, we can release the pipe for others. */
+		pipe_end_transaction(pipe);
+	}
+
+	/*
+	 * Wait for the answer.
+	 */
+	sysarg_t opening_request_rc;
+	async_wait_for(opening_request, &opening_request_rc);
+
+	return (int) opening_request_rc;
+}
+
+/** Request a control write transfer on an endpoint pipe.
+ *
+ * This function encapsulates all three stages of a control transfer.
+ *
+ * @param[in] pipe Pipe used for the transfer.
+ * @param[in] setup_buffer Buffer with the setup packet.
+ * @param[in] setup_buffer_size Size of the setup packet (in bytes).
+ * @param[in] data_buffer Buffer with data to be sent.
+ * @param[in] data_buffer_size Size of the buffer with outgoing data (in bytes).
+ * @return Error code.
+ */
+int usb_pipe_control_write(usb_pipe_t *pipe,
+    void *setup_buffer, size_t setup_buffer_size,
+    void *data_buffer, size_t data_buffer_size)
+{
+	assert(pipe);
+
+	if ((setup_buffer == NULL) || (setup_buffer_size == 0)) {
+		return EINVAL;
+	}
+
+	if ((data_buffer == NULL) && (data_buffer_size > 0)) {
+		return EINVAL;
+	}
+
+	if ((data_buffer != NULL) && (data_buffer_size == 0)) {
+		return EINVAL;
+	}
+
+	if ((pipe->direction != USB_DIRECTION_BOTH)
+	    || (pipe->transfer_type != USB_TRANSFER_CONTROL)) {
+		return EBADF;
+	}
+
+	int rc;
+
+	rc = pipe_add_ref(pipe, false);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	rc = usb_pipe_control_write_no_check(pipe,
+	    setup_buffer, setup_buffer_size, data_buffer, data_buffer_size);
+
+	if (rc == ESTALL) {
+		clear_self_endpoint_halt(pipe);
+	}
+
+	pipe_drop_ref(pipe);
+
+	return rc;
+}
+
+
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/recognise.c
===================================================================
--- uspace/lib/usbdev/src/recognise.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/recognise.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,442 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Functions for recognition of attached devices.
+ */
+#include <sys/types.h>
+#include <fibril_synch.h>
+#include <usb/dev/pipes.h>
+#include <usb/dev/recognise.h>
+#include <usb/ddfiface.h>
+#include <usb/dev/request.h>
+#include <usb/classes/classes.h>
+#include <stdio.h>
+#include <errno.h>
+#include <assert.h>
+
+/** Index to append after device name for uniqueness. */
+static size_t device_name_index = 0;
+/** Mutex guard for device_name_index. */
+static FIBRIL_MUTEX_INITIALIZE(device_name_index_mutex);
+
+/** DDF operations of child devices. */
+ddf_dev_ops_t child_ops = {
+	.interfaces[USB_DEV_IFACE] = &usb_iface_hub_child_impl
+};
+
+/** Get integer part from BCD coded number. */
+#define BCD_INT(a) (((unsigned int)(a)) / 256)
+/** Get fraction part from BCD coded number (as an integer, no less). */
+#define BCD_FRAC(a) (((unsigned int)(a)) % 256)
+
+/** Format for BCD coded number to be used in printf. */
+#define BCD_FMT "%x.%x"
+/** Arguments to printf for BCD coded number. */
+#define BCD_ARGS(a) BCD_INT((a)), BCD_FRAC((a))
+
+/* FIXME: make this dynamic */
+#define MATCH_STRING_MAX 256
+
+/** Add formatted match id.
+ *
+ * @param matches List of match ids where to add to.
+ * @param score Score of the match.
+ * @param format Printf-like format
+ * @return Error code.
+ */
+static int usb_add_match_id(match_id_list_t *matches, int score,
+    const char *format, ...)
+{
+	char *match_str = NULL;
+	match_id_t *match_id = NULL;
+	int rc;
+	
+	match_str = malloc(MATCH_STRING_MAX + 1);
+	if (match_str == NULL) {
+		rc = ENOMEM;
+		goto failure;
+	}
+
+	/*
+	 * FIXME: replace with dynamic allocation of exact size
+	 */
+	va_list args;
+	va_start(args, format	);
+	vsnprintf(match_str, MATCH_STRING_MAX, format, args);
+	match_str[MATCH_STRING_MAX] = 0;
+	va_end(args);
+
+	match_id = create_match_id();
+	if (match_id == NULL) {
+		rc = ENOMEM;
+		goto failure;
+	}
+
+	match_id->id = match_str;
+	match_id->score = score;
+	add_match_id(matches, match_id);
+
+	return EOK;
+	
+failure:
+	if (match_str != NULL) {
+		free(match_str);
+	}
+	if (match_id != NULL) {
+		match_id->id = NULL;
+		delete_match_id(match_id);
+	}
+	
+	return rc;
+}
+
+/** Add match id to list or return with error code.
+ *
+ * @param match_ids List of match ids.
+ * @param score Match id score.
+ * @param format Format of the matching string
+ * @param ... Arguments for the format.
+ */
+#define ADD_MATCHID_OR_RETURN(match_ids, score, format, ...) \
+	do { \
+		int __rc = usb_add_match_id((match_ids), (score), \
+		    format, ##__VA_ARGS__); \
+		if (__rc != EOK) { \
+			return __rc; \
+		} \
+	} while (0)
+
+/** Create device match ids based on its interface.
+ *
+ * @param[in] desc_device Device descriptor.
+ * @param[in] desc_interface Interface descriptor.
+ * @param[out] matches Initialized list of match ids.
+ * @return Error code (the two mentioned are not the only ones).
+ * @retval EINVAL Invalid input parameters (expects non NULL pointers).
+ * @retval ENOENT Device class is not "use interface".
+ */
+int usb_device_create_match_ids_from_interface(
+    const usb_standard_device_descriptor_t *desc_device,
+    const usb_standard_interface_descriptor_t *desc_interface,
+    match_id_list_t *matches)
+{
+	if (desc_interface == NULL) {
+		return EINVAL;
+	}
+	if (matches == NULL) {
+		return EINVAL;
+	}
+
+	if (desc_interface->interface_class == USB_CLASS_USE_INTERFACE) {
+		return ENOENT;
+	}
+
+	const char *classname = usb_str_class(desc_interface->interface_class);
+	assert(classname != NULL);
+
+#define IFACE_PROTOCOL_FMT "interface&class=%s&subclass=0x%02x&protocol=0x%02x"
+#define IFACE_PROTOCOL_ARGS classname, desc_interface->interface_subclass, \
+    desc_interface->interface_protocol
+
+#define IFACE_SUBCLASS_FMT "interface&class=%s&subclass=0x%02x"
+#define IFACE_SUBCLASS_ARGS classname, desc_interface->interface_subclass
+
+#define IFACE_CLASS_FMT "interface&class=%s"
+#define IFACE_CLASS_ARGS classname
+
+#define VENDOR_RELEASE_FMT "vendor=0x%04x&product=0x%04x&release=" BCD_FMT
+#define VENDOR_RELEASE_ARGS desc_device->vendor_id, desc_device->product_id, \
+    BCD_ARGS(desc_device->device_version)
+
+#define VENDOR_PRODUCT_FMT "vendor=0x%04x&product=0x%04x"
+#define VENDOR_PRODUCT_ARGS desc_device->vendor_id, desc_device->product_id
+
+#define VENDOR_ONLY_FMT "vendor=0x%04x"
+#define VENDOR_ONLY_ARGS desc_device->vendor_id
+
+	/*
+	 * If the vendor is specified, create match ids with vendor with
+	 * higher score.
+	 * Then the same ones without the vendor part.
+	 */
+	if ((desc_device != NULL) && (desc_device->vendor_id != 0)) {
+		/* First, interface matches with device release number. */
+		ADD_MATCHID_OR_RETURN(matches, 250,
+		    "usb&" VENDOR_RELEASE_FMT "&" IFACE_PROTOCOL_FMT,
+		    VENDOR_RELEASE_ARGS, IFACE_PROTOCOL_ARGS);
+		ADD_MATCHID_OR_RETURN(matches, 240,
+		    "usb&" VENDOR_RELEASE_FMT "&" IFACE_SUBCLASS_FMT,
+		    VENDOR_RELEASE_ARGS, IFACE_SUBCLASS_ARGS);
+		ADD_MATCHID_OR_RETURN(matches, 230,
+		    "usb&" VENDOR_RELEASE_FMT "&" IFACE_CLASS_FMT,
+		    VENDOR_RELEASE_ARGS, IFACE_CLASS_ARGS);
+
+		/* Next, interface matches without release number. */
+		ADD_MATCHID_OR_RETURN(matches, 220,
+		    "usb&" VENDOR_PRODUCT_FMT "&" IFACE_PROTOCOL_FMT,
+		    VENDOR_PRODUCT_ARGS, IFACE_PROTOCOL_ARGS);
+		ADD_MATCHID_OR_RETURN(matches, 210,
+		    "usb&" VENDOR_PRODUCT_FMT "&" IFACE_SUBCLASS_FMT,
+		    VENDOR_PRODUCT_ARGS, IFACE_SUBCLASS_ARGS);
+		ADD_MATCHID_OR_RETURN(matches, 200,
+		    "usb&" VENDOR_PRODUCT_FMT "&" IFACE_CLASS_FMT,
+		    VENDOR_PRODUCT_ARGS, IFACE_CLASS_ARGS);
+
+		/* Finally, interface matches with only vendor. */
+		ADD_MATCHID_OR_RETURN(matches, 190,
+		    "usb&" VENDOR_ONLY_FMT "&" IFACE_PROTOCOL_FMT,
+		    VENDOR_ONLY_ARGS, IFACE_PROTOCOL_ARGS);
+		ADD_MATCHID_OR_RETURN(matches, 180,
+		    "usb&" VENDOR_ONLY_FMT "&" IFACE_SUBCLASS_FMT,
+		    VENDOR_ONLY_ARGS, IFACE_SUBCLASS_ARGS);
+		ADD_MATCHID_OR_RETURN(matches, 170,
+		    "usb&" VENDOR_ONLY_FMT "&" IFACE_CLASS_FMT,
+		    VENDOR_ONLY_ARGS, IFACE_CLASS_ARGS);
+	}
+
+	/* Now, the same but without any vendor specification. */
+	ADD_MATCHID_OR_RETURN(matches, 160,
+	    "usb&" IFACE_PROTOCOL_FMT,
+	    IFACE_PROTOCOL_ARGS);
+	ADD_MATCHID_OR_RETURN(matches, 150,
+	    "usb&" IFACE_SUBCLASS_FMT,
+	    IFACE_SUBCLASS_ARGS);
+	ADD_MATCHID_OR_RETURN(matches, 140,
+	    "usb&" IFACE_CLASS_FMT,
+	    IFACE_CLASS_ARGS);
+
+#undef IFACE_PROTOCOL_FMT
+#undef IFACE_PROTOCOL_ARGS
+#undef IFACE_SUBCLASS_FMT
+#undef IFACE_SUBCLASS_ARGS
+#undef IFACE_CLASS_FMT
+#undef IFACE_CLASS_ARGS
+#undef VENDOR_RELEASE_FMT
+#undef VENDOR_RELEASE_ARGS
+#undef VENDOR_PRODUCT_FMT
+#undef VENDOR_PRODUCT_ARGS
+#undef VENDOR_ONLY_FMT
+#undef VENDOR_ONLY_ARGS
+
+	/* As a last resort, try fallback driver. */
+	ADD_MATCHID_OR_RETURN(matches, 10, "usb&interface&fallback");
+
+	return EOK;
+}
+
+/** Create DDF match ids from USB device descriptor.
+ *
+ * @param matches List of match ids to extend.
+ * @param device_descriptor Device descriptor returned by given device.
+ * @return Error code.
+ */
+int usb_device_create_match_ids_from_device_descriptor(
+    const usb_standard_device_descriptor_t *device_descriptor,
+    match_id_list_t *matches)
+{
+	/*
+	 * Unless the vendor id is 0, the pair idVendor-idProduct
+	 * quite uniquely describes the device.
+	 */
+	if (device_descriptor->vendor_id != 0) {
+		/* First, with release number. */
+		ADD_MATCHID_OR_RETURN(matches, 100,
+		    "usb&vendor=0x%04x&product=0x%04x&release=" BCD_FMT,
+		    (int) device_descriptor->vendor_id,
+		    (int) device_descriptor->product_id,
+		    BCD_ARGS(device_descriptor->device_version));
+		
+		/* Next, without release number. */
+		ADD_MATCHID_OR_RETURN(matches, 90,
+		    "usb&vendor=0x%04x&product=0x%04x",
+		    (int) device_descriptor->vendor_id,
+		    (int) device_descriptor->product_id);
+	}	
+
+	/*
+	 * If the device class points to interface we skip adding
+	 * class directly but we add a multi interface device.
+	 */
+	if (device_descriptor->device_class != USB_CLASS_USE_INTERFACE) {
+		ADD_MATCHID_OR_RETURN(matches, 50, "usb&class=%s",
+		    usb_str_class(device_descriptor->device_class));
+	} else {
+		ADD_MATCHID_OR_RETURN(matches, 50, "usb&mid");
+	}
+	
+	/* As a last resort, try fallback driver. */
+	ADD_MATCHID_OR_RETURN(matches, 10, "usb&fallback");
+
+	return EOK;
+}
+
+
+/** Create match ids describing attached device.
+ *
+ * @warning The list of match ids @p matches may change even when
+ * function exits with error.
+ *
+ * @param ctrl_pipe Control pipe to given device (session must be already
+ *	started).
+ * @param matches Initialized list of match ids.
+ * @return Error code.
+ */
+int usb_device_create_match_ids(usb_pipe_t *ctrl_pipe,
+    match_id_list_t *matches)
+{
+	int rc;
+	/*
+	 * Retrieve device descriptor and add matches from it.
+	 */
+	usb_standard_device_descriptor_t device_descriptor;
+
+	rc = usb_request_get_device_descriptor(ctrl_pipe, &device_descriptor);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	rc = usb_device_create_match_ids_from_device_descriptor(
+	    &device_descriptor, matches);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	return EOK;
+}
+
+/** Probe for device kind and register it in devman.
+ *
+ * @param[in] address Address of the (unknown) attached device.
+ * @param[in] hc_handle Handle of the host controller.
+ * @param[in] parent Parent device.
+ * @param[out] child_handle Handle of the child device.
+ * @param[in] dev_ops Child device ops.
+ * @param[in] dev_data Arbitrary pointer to be stored in the child
+ *	as @c driver_data.
+ * @param[out] child_fun Storage where pointer to allocated child function
+ *	will be written.
+ * @return Error code.
+ */
+int usb_device_register_child_in_devman(usb_address_t address,
+    devman_handle_t hc_handle,
+    ddf_dev_t *parent, devman_handle_t *child_handle,
+    ddf_dev_ops_t *dev_ops, void *dev_data, ddf_fun_t **child_fun)
+{
+	size_t this_device_name_index;
+
+	fibril_mutex_lock(&device_name_index_mutex);
+	this_device_name_index = device_name_index;
+	device_name_index++;
+	fibril_mutex_unlock(&device_name_index_mutex);
+
+	ddf_fun_t *child = NULL;
+	char *child_name = NULL;
+	int rc;
+	usb_device_connection_t dev_connection;
+	usb_pipe_t ctrl_pipe;
+
+	rc = usb_device_connection_initialize(&dev_connection, hc_handle, address);
+	if (rc != EOK) {
+		goto failure;
+	}
+
+	rc = usb_pipe_initialize_default_control(&ctrl_pipe,
+	    &dev_connection);
+	if (rc != EOK) {
+		goto failure;
+	}
+	rc = usb_pipe_probe_default_control(&ctrl_pipe);
+	if (rc != EOK) {
+		goto failure;
+	}
+
+	/*
+	 * TODO: Once the device driver framework support persistent
+	 * naming etc., something more descriptive could be created.
+	 */
+	rc = asprintf(&child_name, "usb%02zu_a%d",
+	    this_device_name_index, address);
+	if (rc < 0) {
+		goto failure;
+	}
+
+	child = ddf_fun_create(parent, fun_inner, child_name);
+	if (child == NULL) {
+		rc = ENOMEM;
+		goto failure;
+	}
+
+	if (dev_ops != NULL) {
+		child->ops = dev_ops;
+	} else {
+		child->ops = &child_ops;
+	}
+
+	child->driver_data = dev_data;
+
+	rc = usb_device_create_match_ids(&ctrl_pipe, &child->match_ids);
+	if (rc != EOK) {
+		goto failure;
+	}
+
+	rc = ddf_fun_bind(child);
+	if (rc != EOK) {
+		goto failure;
+	}
+
+	if (child_handle != NULL) {
+		*child_handle = child->handle;
+	}
+
+	if (child_fun != NULL) {
+		*child_fun = child;
+	}
+
+	return EOK;
+
+failure:
+	if (child != NULL) {
+		child->name = NULL;
+		/* This takes care of match_id deallocation as well. */
+		ddf_fun_destroy(child);
+	}
+	if (child_name != NULL) {
+		free(child_name);
+	}
+
+	return rc;
+}
+
+
+/**
+ * @}
+ */
Index: uspace/lib/usbdev/src/request.c
===================================================================
--- uspace/lib/usbdev/src/request.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbdev/src/request.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,930 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbdev
+ * @{
+ */
+/** @file
+ * Standard USB requests (implementation).
+ */
+#include <usb/dev/request.h>
+#include <errno.h>
+#include <assert.h>
+#include <usb/debug.h>
+
+#define MAX_DATA_LENGTH ((size_t)(0xFFFF))
+
+/** Generic wrapper for SET requests using standard control request format.
+ *
+ * @see usb_pipe_control_write
+ *
+ * @param pipe Pipe used for the communication.
+ * @param request_type Request type (standard/class/vendor).
+ * @param recipient Request recipient (e.g. device or endpoint).
+ * @param request Actual request (e.g. GET_DESCRIPTOR).
+ * @param value Value of @c wValue field of setup packet
+ * 	(must be in USB endianness).
+ * @param index Value of @c wIndex field of setup packet
+ * 	(must be in USB endianness).
+ * @param data Data to be sent during DATA stage
+ * 	(expected to be in USB endianness).
+ * @param data_size Size of the @p data buffer (in native endianness).
+ * @return Error code.
+ * @retval EBADMEM @p pipe is NULL.
+ * @retval EBADMEM @p data is NULL and @p data_size is not zero.
+ * @retval ERANGE Data buffer too large.
+ */
+int usb_control_request_set(usb_pipe_t *pipe,
+    usb_request_type_t request_type, usb_request_recipient_t recipient,
+    uint8_t request,
+    uint16_t value, uint16_t index,
+    void *data, size_t data_size)
+{
+	if (pipe == NULL) {
+		return EBADMEM;
+	}
+
+	if (data_size > MAX_DATA_LENGTH) {
+		return ERANGE;
+	}
+
+	if ((data_size > 0) && (data == NULL)) {
+		return EBADMEM;
+	}
+
+	/*
+	 * TODO: check that @p request_type and @p recipient are
+	 * within ranges.
+	 */
+
+	usb_device_request_setup_packet_t setup_packet;
+	setup_packet.request_type = (request_type << 5) | recipient;
+	setup_packet.request = request;
+	setup_packet.value = value;
+	setup_packet.index = index;
+	setup_packet.length = (uint16_t) data_size;
+
+	int rc = usb_pipe_control_write(pipe,
+	    &setup_packet, sizeof(setup_packet),
+	    data, data_size);
+
+	return rc;
+}
+
+ /** Generic wrapper for GET requests using standard control request format.
+  *
+  * @see usb_pipe_control_read
+  *
+  * @param pipe Pipe used for the communication.
+  * @param request_type Request type (standard/class/vendor).
+  * @param recipient Request recipient (e.g. device or endpoint).
+  * @param request Actual request (e.g. GET_DESCRIPTOR).
+  * @param value Value of @c wValue field of setup packet
+  * 	(must be in USB endianness).
+  * @param index Value of @c wIndex field of setup packet
+  *	(must be in USB endianness).
+  * @param data Buffer where to store data accepted during the DATA stage.
+  *	(they will come in USB endianness).
+  * @param data_size Size of the @p data buffer
+  * 	(in native endianness).
+  * @param actual_data_size Actual size of transfered data
+  * 	(in native endianness).
+  * @return Error code.
+  * @retval EBADMEM @p pipe is NULL.
+  * @retval EBADMEM @p data is NULL and @p data_size is not zero.
+  * @retval ERANGE Data buffer too large.
+  */
+int usb_control_request_get(usb_pipe_t *pipe,
+    usb_request_type_t request_type, usb_request_recipient_t recipient,
+    uint8_t request,
+    uint16_t value, uint16_t index,
+    void *data, size_t data_size, size_t *actual_data_size)
+{
+	if (pipe == NULL) {
+		return EBADMEM;
+	}
+
+	if (data_size > MAX_DATA_LENGTH) {
+		return ERANGE;
+	}
+
+	if ((data_size > 0) && (data == NULL)) {
+		return EBADMEM;
+	}
+
+	/*
+	 * TODO: check that @p request_type and @p recipient are
+	 * within ranges.
+	 */
+
+	usb_device_request_setup_packet_t setup_packet;
+	setup_packet.request_type = 128 | (request_type << 5) | recipient;
+	setup_packet.request = request;
+	setup_packet.value = value;
+	setup_packet.index = index;
+	setup_packet.length = (uint16_t) data_size;
+
+	int rc = usb_pipe_control_read(pipe,
+	    &setup_packet, sizeof(setup_packet),
+	    data, data_size, actual_data_size);
+
+	return rc;
+}
+
+/** Retrieve status of a USB device.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] index Recipient index (in native endianness).
+ * @param[in] recipient Recipient of the GET_STATUS request.
+ * @param[out] status Recipient status (in native endianness).
+ * @return Error code.
+ */
+int usb_request_get_status(usb_pipe_t *pipe,
+    usb_request_recipient_t recipient, uint16_t index,
+    uint16_t *status)
+{
+	if ((recipient == USB_REQUEST_RECIPIENT_DEVICE) && (index != 0)) {
+		return EINVAL;
+	}
+
+	if (status == NULL) {
+		return EBADMEM;
+	}
+
+	uint16_t status_usb_endianess;
+	size_t data_transfered_size;
+	int rc = usb_control_request_get(pipe, USB_REQUEST_TYPE_STANDARD,
+	    recipient, USB_DEVREQ_GET_STATUS, 0, uint16_host2usb(index),
+	    &status_usb_endianess, 2, &data_transfered_size);
+	if (rc != EOK) {
+		return rc;
+	}
+	if (data_transfered_size != 2) {
+		return ELIMIT;
+	}
+
+	*status = uint16_usb2host(status_usb_endianess);
+
+	return EOK;
+}
+
+/** Clear or disable specific device feature.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] request_type Request type (standard/class/vendor).
+ * @param[in] recipient Recipient of the CLEAR_FEATURE request.
+ * @param[in] feature_selector Feature selector (in native endianness).
+ * @param[in] index Recipient index (in native endianness).
+ * @return Error code.
+ */
+int usb_request_clear_feature(usb_pipe_t *pipe,
+    usb_request_type_t request_type, usb_request_recipient_t recipient,
+    uint16_t feature_selector, uint16_t index)
+{
+	if (request_type == USB_REQUEST_TYPE_STANDARD) {
+		if ((recipient == USB_REQUEST_RECIPIENT_DEVICE)
+		    && (index != 0)) {
+			return EINVAL;
+		}
+	}
+
+	int rc = usb_control_request_set(pipe, request_type, recipient,
+	    USB_DEVREQ_CLEAR_FEATURE,
+	    uint16_host2usb(feature_selector), uint16_host2usb(index),
+	    NULL, 0);
+
+	return rc;
+}
+
+/** Set or enable specific device feature.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] request_type Request type (standard/class/vendor).
+ * @param[in] recipient Recipient of the SET_FEATURE request.
+ * @param[in] feature_selector Feature selector (in native endianness).
+ * @param[in] index Recipient index (in native endianness).
+ * @return Error code.
+ */
+int usb_request_set_feature(usb_pipe_t *pipe,
+    usb_request_type_t request_type, usb_request_recipient_t recipient,
+    uint16_t feature_selector, uint16_t index)
+{
+	if (request_type == USB_REQUEST_TYPE_STANDARD) {
+		if ((recipient == USB_REQUEST_RECIPIENT_DEVICE)
+		    && (index != 0)) {
+			return EINVAL;
+		}
+	}
+
+	int rc = usb_control_request_set(pipe, request_type, recipient,
+	    USB_DEVREQ_SET_FEATURE,
+	    uint16_host2usb(feature_selector), uint16_host2usb(index),
+	    NULL, 0);
+
+	return rc;
+}
+
+/** Change address of connected device.
+ * This function automatically updates the backing connection to point to
+ * the new address.
+ *
+ * @param pipe Control endpoint pipe (session must be already started).
+ * @param new_address New USB address to be set (in native endianness).
+ * @return Error code.
+ */
+int usb_request_set_address(usb_pipe_t *pipe,
+    usb_address_t new_address)
+{
+	if ((new_address < 0) || (new_address >= USB11_ADDRESS_MAX)) {
+		return EINVAL;
+	}
+
+	uint16_t addr = uint16_host2usb((uint16_t)new_address);
+
+	int rc = usb_control_request_set(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_DEVICE,
+	    USB_DEVREQ_SET_ADDRESS,
+	    addr, 0,
+	    NULL, 0);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	assert(pipe->wire != NULL);
+	/* TODO: prevent other from accessing wire now. */
+	pipe->wire->address = new_address;
+
+	return EOK;
+}
+
+/** Retrieve USB descriptor of a USB device.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] request_type Request type (standard/class/vendor).
+ * @param[in] recipient Request recipient (device/interface/endpoint).
+ * @param[in] descriptor_type Descriptor type (device/configuration/HID/...).
+ * @param[in] descriptor_index Descriptor index.
+ * @param[in] language Language index.
+ * @param[out] buffer Buffer where to store the retrieved descriptor.
+ * @param[in] size Size of the @p buffer.
+ * @param[out] actual_size Number of bytes actually transferred.
+ * @return Error code.
+ */
+int usb_request_get_descriptor(usb_pipe_t *pipe,
+    usb_request_type_t request_type, usb_request_recipient_t recipient,
+    uint8_t descriptor_type, uint8_t descriptor_index,
+    uint16_t language,
+    void *buffer, size_t size, size_t *actual_size)
+{
+	if (buffer == NULL) {
+		return EBADMEM;
+	}
+	if (size == 0) {
+		return EINVAL;
+	}
+
+	uint16_t wValue = descriptor_index | (descriptor_type << 8);
+
+	return usb_control_request_get(pipe,
+	    request_type, recipient,
+	    USB_DEVREQ_GET_DESCRIPTOR,
+	    wValue, language,
+	    buffer, size, actual_size);
+}
+
+/** Retrieve USB descriptor, allocate space for it.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] request_type Request type (standard/class/vendor).
+ * @param[in] recipient Request recipient (device/interface/endpoint).
+ * @param[in] descriptor_type Descriptor type (device/configuration/HID/...).
+ * @param[in] descriptor_index Descriptor index.
+ * @param[in] language Language index.
+ * @param[out] buffer_ptr Where to store pointer to allocated buffer.
+ * @param[out] buffer_size Where to store the size of the descriptor.
+ * @return
+ */
+int usb_request_get_descriptor_alloc(usb_pipe_t * pipe,
+    usb_request_type_t request_type, usb_request_recipient_t recipient,
+    uint8_t descriptor_type, uint8_t descriptor_index,
+    uint16_t language,
+    void **buffer_ptr, size_t *buffer_size)
+{
+	if (buffer_ptr == NULL) {
+		return EBADMEM;
+	}
+
+	int rc;
+
+	/*
+	 * Get only first byte to retrieve descriptor length.
+	 */
+	uint8_t tmp_buffer[1];
+	size_t bytes_transfered;
+	rc = usb_request_get_descriptor(pipe, request_type, recipient,
+	    descriptor_type, descriptor_index, language,
+	    &tmp_buffer, 1, &bytes_transfered);
+	if (rc != EOK) {
+		return rc;
+	}
+	if (bytes_transfered != 1) {
+		/* FIXME: some better error code? */
+		return ESTALL;
+	}
+
+	size_t size = tmp_buffer[0];
+	if (size == 0) {
+		/* FIXME: some better error code? */
+		return ESTALL;
+	}
+
+	/*
+	 * Allocate buffer and get the descriptor again.
+	 */
+	void *buffer = malloc(size);
+	if (buffer == NULL) {
+		return ENOMEM;
+	}
+
+	rc = usb_request_get_descriptor(pipe, request_type, recipient,
+	    descriptor_type, descriptor_index, language,
+	    buffer, size, &bytes_transfered);
+	if (rc != EOK) {
+		free(buffer);
+		return rc;
+	}
+	if (bytes_transfered != size) {
+		free(buffer);
+		/* FIXME: some better error code? */
+		return ESTALL;
+	}
+
+	*buffer_ptr = buffer;
+	if (buffer_size != NULL) {
+		*buffer_size = size;
+	}
+
+	return EOK;
+}
+
+/** Retrieve standard device descriptor of a USB device.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[out] descriptor Storage for the device descriptor.
+ * @return Error code.
+ */
+int usb_request_get_device_descriptor(usb_pipe_t *pipe,
+    usb_standard_device_descriptor_t *descriptor)
+{
+	if (descriptor == NULL) {
+		return EBADMEM;
+	}
+
+	size_t actually_transferred = 0;
+	usb_standard_device_descriptor_t descriptor_tmp;
+	int rc = usb_request_get_descriptor(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_DEVICE, 
+	    USB_DESCTYPE_DEVICE, 0, 0,
+	    &descriptor_tmp, sizeof(descriptor_tmp),
+	    &actually_transferred);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Verify that all data has been transferred. */
+	if (actually_transferred < sizeof(descriptor_tmp)) {
+		return ELIMIT;
+	}
+
+	/* Everything is okay, copy the descriptor. */
+	memcpy(descriptor, &descriptor_tmp,
+	    sizeof(descriptor_tmp));
+
+	return EOK;
+}
+
+/** Retrieve configuration descriptor of a USB device.
+ *
+ * The function does not retrieve additional data binded with configuration
+ * descriptor (such as its interface and endpoint descriptors) - use
+ * usb_request_get_full_configuration_descriptor() instead.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] index Descriptor index.
+ * @param[out] descriptor Storage for the device descriptor.
+ * @return Error code.
+ */
+int usb_request_get_bare_configuration_descriptor(usb_pipe_t *pipe,
+    int index, usb_standard_configuration_descriptor_t *descriptor)
+{
+	if (descriptor == NULL) {
+		return EBADMEM;
+	}
+
+	if ((index < 0) || (index > 0xFF)) {
+		return ERANGE;
+	}
+
+	size_t actually_transferred = 0;
+	usb_standard_configuration_descriptor_t descriptor_tmp;
+	int rc = usb_request_get_descriptor(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_DEVICE,
+	    USB_DESCTYPE_CONFIGURATION, index, 0,
+	    &descriptor_tmp, sizeof(descriptor_tmp),
+	    &actually_transferred);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	/* Verify that all data has been transferred. */
+	if (actually_transferred < sizeof(descriptor_tmp)) {
+		return ELIMIT;
+	}
+
+	/* Everything is okay, copy the descriptor. */
+	memcpy(descriptor, &descriptor_tmp,
+	    sizeof(descriptor_tmp));
+
+	return EOK;
+}
+
+/** Retrieve full configuration descriptor of a USB device.
+ *
+ * @warning The @p buffer might be touched (i.e. its contents changed)
+ * even when error occurs.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] index Descriptor index.
+ * @param[out] descriptor Storage for the device descriptor.
+ * @param[in] descriptor_size Size of @p descriptor buffer.
+ * @param[out] actual_size Number of bytes actually transferred.
+ * @return Error code.
+ */
+int usb_request_get_full_configuration_descriptor(usb_pipe_t *pipe,
+    int index, void *descriptor, size_t descriptor_size, size_t *actual_size)
+{
+	if ((index < 0) || (index > 0xFF)) {
+		return ERANGE;
+	}
+
+	return usb_request_get_descriptor(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_DEVICE,
+	    USB_DESCTYPE_CONFIGURATION, index, 0,
+	    descriptor, descriptor_size, actual_size);
+}
+
+/** Retrieve full configuration descriptor, allocate space for it.
+ *
+ * The function takes care that full configuration descriptor is returned
+ * (i.e. the function will fail when less data then descriptor.totalLength
+ * is returned).
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] index Configuration index.
+ * @param[out] descriptor_ptr Where to store pointer to allocated buffer.
+ * @param[out] descriptor_size Where to store the size of the descriptor.
+ * @return Error code.
+ */
+int usb_request_get_full_configuration_descriptor_alloc(
+    usb_pipe_t *pipe, int index,
+    void **descriptor_ptr, size_t *descriptor_size)
+{
+	int rc;
+
+	if (descriptor_ptr == NULL) {
+		return EBADMEM;
+	}
+
+	usb_standard_configuration_descriptor_t bare_config;
+	rc = usb_request_get_bare_configuration_descriptor(pipe, index,
+	    &bare_config);
+	if (rc != EOK) {
+		return rc;
+	}
+	if (bare_config.descriptor_type != USB_DESCTYPE_CONFIGURATION) {
+		return ENOENT;
+	}
+	if (bare_config.total_length < sizeof(bare_config)) {
+		return ELIMIT;
+	}
+
+	void *buffer = malloc(bare_config.total_length);
+	if (buffer == NULL) {
+		return ENOMEM;
+	}
+
+	size_t transferred = 0;
+	rc = usb_request_get_full_configuration_descriptor(pipe, index,
+	    buffer, bare_config.total_length, &transferred);
+	if (rc != EOK) {
+		free(buffer);
+		return rc;
+	}
+
+	if (transferred != bare_config.total_length) {
+		free(buffer);
+		return ELIMIT;
+	}
+
+	/* Everything looks okay, copy the pointers. */
+
+	*descriptor_ptr = buffer;
+
+	if (descriptor_size != NULL) {
+		*descriptor_size = bare_config.total_length;
+	}
+
+	return EOK;
+}
+
+/** Update existing or add new USB descriptor to a USB device.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] request_type Request type (standard/class/vendor).
+ * @param[in] recipient Request recipient (device/interface/endpoint).
+ * @param[in] descriptor_type Descriptor type (device/configuration/HID/...).
+ * @param[in] descriptor_index Descriptor index.
+ * @param[in] language Language index (in native endianness).
+ * @param[in] buffer Buffer with the new descriptor (in USB endianness).
+ * @param[in] size Size of the @p buffer in bytes (in native endianness).
+ * @return Error code.
+ */
+int usb_request_set_descriptor(usb_pipe_t *pipe,
+    usb_request_type_t request_type, usb_request_recipient_t recipient,
+    uint8_t descriptor_type, uint8_t descriptor_index,
+    uint16_t language,
+    void *buffer, size_t size)
+{
+	if (buffer == NULL) {
+		return EBADMEM;
+	}
+	if (size == 0) {
+		return EINVAL;
+	}
+
+	/* FIXME: proper endianness. */
+	uint16_t wValue = descriptor_index | (descriptor_type << 8);
+
+	return usb_control_request_set(pipe,
+	    request_type, recipient,
+	    USB_DEVREQ_SET_DESCRIPTOR,
+	    wValue, language,
+	    buffer, size);
+}
+
+/** Get current configuration value of USB device.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[out] configuration_value Current configuration value.
+ * @return Error code.
+ */
+int usb_request_get_configuration(usb_pipe_t *pipe,
+    uint8_t *configuration_value)
+{
+	uint8_t value;
+	size_t actual_size;
+
+	int rc = usb_control_request_get(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_DEVICE,
+	    USB_DEVREQ_GET_CONFIGURATION,
+	    0, 0,
+	    &value, 1, &actual_size);
+
+	if (rc != EOK) {
+		return rc;
+	}
+	if (actual_size != 1) {
+		return ELIMIT;
+	}
+
+	if (configuration_value != NULL) {
+		*configuration_value = value;
+	}
+
+	return EOK;
+}
+
+/** Set configuration of USB device.
+ *
+ * @param pipe Control endpoint pipe (session must be already started).
+ * @param configuration_value New configuration value.
+ * @return Error code.
+ */
+int usb_request_set_configuration(usb_pipe_t *pipe,
+    uint8_t configuration_value)
+{
+	uint16_t config_value
+	    = uint16_host2usb((uint16_t) configuration_value);
+
+	return usb_control_request_set(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_DEVICE,
+	    USB_DEVREQ_SET_CONFIGURATION, config_value, 0,
+	    NULL, 0);
+}
+
+/** Get selected alternate setting for USB interface.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] interface_index Interface index.
+ * @param[out] alternate_setting Alternate setting for the interface.
+ * @return Error code.
+ */
+int usb_request_get_interface(usb_pipe_t *pipe,
+    uint8_t interface_index, uint8_t *alternate_setting)
+{
+	uint8_t value;
+	size_t actual_size;
+
+	int rc = usb_control_request_get(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_INTERFACE,
+	    USB_DEVREQ_GET_INTERFACE,
+	    0, uint16_host2usb((uint16_t) interface_index),
+	    &value, 1, &actual_size);
+
+	if (rc != EOK) {
+		return rc;
+	}
+	if (actual_size != 1) {
+		return ELIMIT;
+	}
+
+	if (alternate_setting != NULL) {
+		*alternate_setting = value;
+	}
+
+	return EOK;
+}
+
+/** Select alternate setting for USB interface.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] interface_index Interface index.
+ * @param[in] alternate_setting Alternate setting to select.
+ * @return Error code.
+ */
+int usb_request_set_interface(usb_pipe_t *pipe,
+    uint8_t interface_index, uint8_t alternate_setting)
+{
+	return usb_control_request_set(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_INTERFACE,
+	    USB_DEVREQ_SET_INTERFACE,
+	    uint16_host2usb((uint16_t) alternate_setting),
+	    uint16_host2usb((uint16_t) interface_index),
+	    NULL, 0);
+}
+
+/** Get list of supported languages by USB device.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[out] languages_ptr Where to store pointer to allocated array of
+ *	supported languages.
+ * @param[out] languages_count Number of supported languages.
+ * @return Error code.
+ */
+int usb_request_get_supported_languages(usb_pipe_t *pipe,
+    l18_win_locales_t **languages_ptr, size_t *languages_count)
+{
+	int rc;
+
+	if (languages_ptr == NULL) {
+		return EBADMEM;
+	}
+	if (languages_count == NULL) {
+		return EBADMEM;
+	}
+
+	uint8_t *string_descriptor = NULL;
+	size_t string_descriptor_size = 0;
+	rc = usb_request_get_descriptor_alloc(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_DEVICE,
+	    USB_DESCTYPE_STRING, 0, 0,
+	    (void **) &string_descriptor, &string_descriptor_size);
+	if (rc != EOK) {
+		return rc;
+	}
+	if (string_descriptor_size <= 2) {
+		free(string_descriptor);
+		return EEMPTY;
+	}
+	/* Subtract first 2 bytes (length and descriptor type). */
+	string_descriptor_size -= 2;
+
+	/* Odd number of bytes - descriptor is broken? */
+	if ((string_descriptor_size % 2) != 0) {
+		/* FIXME: shall we return with error or silently ignore? */
+		free(string_descriptor);
+		return ESTALL;
+	}
+
+	size_t langs_count = string_descriptor_size / 2;
+	l18_win_locales_t *langs
+	    = malloc(sizeof(l18_win_locales_t) * langs_count);
+	if (langs == NULL) {
+		free(string_descriptor);
+		return ENOMEM;
+	}
+
+	size_t i;
+	for (i = 0; i < langs_count; i++) {
+		/* Language code from the descriptor is in USB endianness. */
+		/* FIXME: is this really correct? */
+		uint16_t lang_code = (string_descriptor[2 + 2 * i + 1] << 8)
+		    + string_descriptor[2 + 2 * i];
+		langs[i] = uint16_usb2host(lang_code);
+	}
+
+	free(string_descriptor);
+
+	*languages_ptr = langs;
+	*languages_count =langs_count;
+
+	return EOK;
+}
+
+/** Get string (descriptor) from USB device.
+ *
+ * The string is returned in native encoding of the operating system.
+ * For HelenOS, that is UTF-8.
+ *
+ * @param[in] pipe Control endpoint pipe (session must be already started).
+ * @param[in] index String index (in native endianness),
+ *	first index has number 1 (index from descriptors can be used directly).
+ * @param[in] lang String language (in native endianness).
+ * @param[out] string_ptr Where to store allocated string in native encoding.
+ * @return Error code.
+ */
+int usb_request_get_string(usb_pipe_t *pipe,
+    size_t index, l18_win_locales_t lang, char **string_ptr)
+{
+	if (string_ptr == NULL) {
+		return EBADMEM;
+	}
+	/*
+	 * Index is actually one byte value and zero index is used
+	 * to retrieve list of supported languages.
+	 */
+	if ((index < 1) || (index > 0xFF)) {
+		return ERANGE;
+	}
+	/* Language is actually two byte value. */
+	if (lang > 0xFFFF) {
+		return ERANGE;
+	}
+
+	int rc;
+
+	/* Prepare dynamically allocated variables. */
+	uint8_t *string = NULL;
+	wchar_t *string_chars = NULL;
+
+	/* Get the actual descriptor. */
+	size_t string_size;
+	rc = usb_request_get_descriptor_alloc(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_DEVICE,
+	    USB_DESCTYPE_STRING, index, uint16_host2usb(lang),
+	    (void **) &string, &string_size);
+	if (rc != EOK) {
+		goto leave;
+	}
+
+	if (string_size <= 2) {
+		rc =  EEMPTY;
+		goto leave;
+	}
+	/* Subtract first 2 bytes (length and descriptor type). */
+	string_size -= 2;
+
+	/* Odd number of bytes - descriptor is broken? */
+	if ((string_size % 2) != 0) {
+		/* FIXME: shall we return with error or silently ignore? */
+		rc = ESTALL;
+		goto leave;
+	}
+
+	size_t string_char_count = string_size / 2;
+	string_chars = malloc(sizeof(wchar_t) * (string_char_count + 1));
+	if (string_chars == NULL) {
+		rc = ENOMEM;
+		goto leave;
+	}
+
+	/*
+	 * Build a wide string.
+	 * And do not forget to set NULL terminator (string descriptors
+	 * do not have them).
+	 */
+	size_t i;
+	for (i = 0; i < string_char_count; i++) {
+		uint16_t uni_char = (string[2 + 2 * i + 1] << 8)
+		    + string[2 + 2 * i];
+		string_chars[i] = uni_char;
+	}
+	string_chars[string_char_count] = 0;
+
+
+	/* Convert to normal string. */
+	char *str = wstr_to_astr(string_chars);
+	if (str == NULL) {
+		rc = ENOMEM;
+		goto leave;
+	}
+
+	*string_ptr = str;
+	rc = EOK;
+
+leave:
+	if (string != NULL) {
+		free(string);
+	}
+	if (string_chars != NULL) {
+		free(string_chars);
+	}
+
+	return rc;
+}
+
+/** Clear halt bit of an endpoint pipe (after pipe stall).
+ *
+ * @param pipe Control pipe.
+ * @param ep_index Endpoint index (in native endianness).
+ * @return Error code.
+ */
+int usb_request_clear_endpoint_halt(usb_pipe_t *pipe, uint16_t ep_index)
+{
+	return usb_request_clear_feature(pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_ENDPOINT,
+	    uint16_host2usb(USB_FEATURE_SELECTOR_ENDPOINT_HALT),
+	    uint16_host2usb(ep_index));
+}
+
+/** Clear halt bit of an endpoint pipe (after pipe stall).
+ *
+ * @param ctrl_pipe Control pipe.
+ * @param target_pipe Which pipe is halted and shall be cleared.
+ * @return Error code.
+ */
+int usb_pipe_clear_halt(usb_pipe_t *ctrl_pipe, usb_pipe_t *target_pipe)
+{
+	if ((ctrl_pipe == NULL) || (target_pipe == NULL)) {
+		return EINVAL;
+	}
+	return usb_request_clear_endpoint_halt(ctrl_pipe,
+	    target_pipe->endpoint_no);
+}
+
+/** Get endpoint status.
+ *
+ * @param[in] ctrl_pipe Control pipe.
+ * @param[in] pipe Of which pipe the status shall be received.
+ * @param[out] status Where to store pipe status (in native endianness).
+ * @return Error code.
+ */
+int usb_request_get_endpoint_status(usb_pipe_t *ctrl_pipe, usb_pipe_t *pipe,
+    uint16_t *status)
+{
+	uint16_t status_tmp;
+	uint16_t pipe_index = (uint16_t) pipe->endpoint_no;
+	int rc = usb_request_get_status(ctrl_pipe,
+	    USB_REQUEST_RECIPIENT_ENDPOINT, uint16_host2usb(pipe_index),
+	    &status_tmp);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	if (status != NULL) {
+		*status = uint16_usb2host(status_tmp);
+	}
+
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/Makefile
===================================================================
--- uspace/lib/usbhid/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,46 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+LIBRARY = libusbhid
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include \
+	-Iinclude
+
+SOURCES = \
+	src/hiddescriptor.c \
+	src/hidiface.c \
+	src/hidparser.c \
+	src/hidpath.c \
+	src/hidreport.c \
+	src/consumer.c \
+	src/hidreq.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/lib/usbhid/include/usb/hid/hid.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/hid.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/hid.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * @brief USB HID device related types.
+ */
+#ifndef LIBUSBHID_HID_H_
+#define LIBUSBHID_HID_H_
+
+#include <usb/usb.h>
+#include <usb/hid/hidparser.h>
+#include <usb/descriptor.h>
+
+/** USB/HID device requests. */
+typedef enum {
+	USB_HIDREQ_GET_REPORT = 1,
+	USB_HIDREQ_GET_IDLE = 2,
+	USB_HIDREQ_GET_PROTOCOL = 3,
+	/* Values 4 to 8 are reserved. */
+	USB_HIDREQ_SET_REPORT = 9,
+	USB_HIDREQ_SET_IDLE = 10,
+	USB_HIDREQ_SET_PROTOCOL = 11
+} usb_hid_request_t;
+
+typedef enum {
+	USB_HID_PROTOCOL_BOOT = 0,
+	USB_HID_PROTOCOL_REPORT = 1
+} usb_hid_protocol_t;
+
+/** USB/HID subclass constants. */
+typedef enum {
+	USB_HID_SUBCLASS_NONE = 0,
+	USB_HID_SUBCLASS_BOOT = 1
+} usb_hid_subclass_t;
+
+/** USB/HID interface protocols. */
+typedef enum {
+	USB_HID_PROTOCOL_NONE = 0,
+	USB_HID_PROTOCOL_KEYBOARD = 1,
+	USB_HID_PROTOCOL_MOUSE = 2
+} usb_hid_iface_protocol_t;
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/hid_report_items.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/hid_report_items.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/hid_report_items.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,354 @@
+/*
+ * Copyright (c) 2011 Matej Klonfar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * @brief USB HID Report descriptor item tags.
+ */
+#ifndef LIBUSB_HID_REPORT_ITEMS_H_
+#define LIBUSB_HID_REPORT_ITEMS_H_
+
+#include <stdint.h>
+
+/*---------------------------------------------------------------------------*/
+/*
+ * Item prefix
+ */
+
+/** Returns size of item data in bytes */
+#define USB_HID_ITEM_SIZE(data) 	((uint8_t)(data & 0x3))
+
+/** Returns item tag */
+#define USB_HID_ITEM_TAG(data) 		((uint8_t)((data & 0xF0) >> 4))
+
+/** Returns class of item tag */
+#define USB_HID_ITEM_TAG_CLASS(data)	((uint8_t)((data & 0xC) >> 2))
+
+/** Returns if the item is the short item or long item. Long items are not
+ * supported. */
+#define USB_HID_ITEM_IS_LONG(data)	(data == 0xFE)
+
+/*---------------------------------------------------------------------------*/
+/*
+ * Extended usage macros
+ */
+
+/** Recognizes if the given usage is extended (contains also usage page).  */
+#define USB_HID_IS_EXTENDED_USAGE(usage)	((usage & 0xFFFF0000) != 0)
+
+/** Cuts usage page of the extended usage. */
+#define USB_HID_EXTENDED_USAGE_PAGE(usage)	((usage & 0xFFFF0000) >> 16)
+
+/** Cuts usage of the extended usage */
+#define USB_HID_EXTENDED_USAGE(usage)		(usage & 0xFFFF)
+
+/*---------------------------------------------------------------------------*/
+/*
+ * Input/Output/Feature Item flags
+ */
+/** 
+ * Indicates whether the item is data (0) or a constant (1) value. Data
+ * indicates the item is defining report fields that contain modifiable device
+ * data. Constant indicates the item is a static read-only field in a report
+ * and cannot be modified (written) by the host.
+ */
+#define USB_HID_ITEM_FLAG_CONSTANT(flags) 	((flags & 0x1) == 0x1)
+
+/**
+ * Indicates whether the item creates variable (1) or array (0) data fields in
+ * reports. 
+ */
+#define USB_HID_ITEM_FLAG_VARIABLE(flags) 	((flags & 0x2) == 0x2)
+
+/**
+ * Indicates whether the data is absolute (0) (based on a fixed origin) or
+ * relative (1) (indicating the change in value from the last report). Mouse
+ * devices usually provide relative data, while tablets usually provide
+ * absolute data.
+ */
+#define USB_HID_ITEM_FLAG_RELATIVE(flags) 	((flags & 0x4) == 0x4)
+
+/** Indicates whether the data “rolls over” when reaching either the extreme
+ * high or low value. For example, a dial that can spin freely 360 degrees
+ * might output values from 0 to 10. If Wrap is indicated, the next value
+ * reported after passing the 10 position in the increasing direction would be
+ * 0.
+ */
+#define USB_HID_ITEM_FLAG_WRAP(flags)		((flags & 0x8) == 0x8)
+
+/**
+ * Indicates whether the raw data from the device has been processed in some
+ * way, and no longer represents a linear relationship between what is
+ * measured and the data that is reported.
+ */
+#define USB_HID_ITEM_FLAG_LINEAR(flags)		((flags & 0x10) == 0x10)
+
+/**
+ * Indicates whether the control has a preferred state to which it will return
+ * when the user is not physically interacting with the control. Push buttons
+ * (as opposed to toggle buttons) and self- centering joysticks are examples.
+ */
+#define USB_HID_ITEM_FLAG_PREFERRED(flags)	((flags & 0x20) == 0x20)
+
+/**
+ * Indicates whether the control has a state in which it is not sending
+ * meaningful data. One possible use of the null state is for controls that
+ * require the user to physically interact with the control in order for it to
+ * report useful data.
+ */
+#define USB_HID_ITEM_FLAG_POSITION(flags)	((flags & 0x40) == 0x40)
+
+/**
+ * Indicates whether the Feature or Output control's value should be changed
+ * by the host or not.  Volatile output can change with or without host
+ * interaction. To avoid synchronization problems, volatile controls should be
+ * relative whenever possible.
+ */
+#define USB_HID_ITEM_FLAG_VOLATILE(flags)	((flags & 0x80) == 0x80)
+
+/**
+ * Indicates that the control emits a fixed-size stream of bytes. The contents
+ * of the data field are determined by the application. The contents of the
+ * buffer are not interpreted as a single numeric quantity. Report data
+ * defined by a Buffered Bytes item must be aligned on an 8-bit boundary.
+ */
+#define USB_HID_ITEM_FLAG_BUFFERED(flags)	((flags & 0x100) == 0x100)
+
+/*---------------------------------------------------------------------------*/
+
+/* MAIN ITEMS */
+
+/**
+ * Main items are used to either define or group certain types of data fields
+ * within a Report descriptor.
+ */
+#define USB_HID_TAG_CLASS_MAIN			0x0
+
+/**
+ * An Input item describes information about the data provided by one or more
+ * physical controls. An application can use this information to interpret the
+ * data provided by the device. All data fields defined in a single item share
+ * an identical data format.
+ */
+#define USB_HID_REPORT_TAG_INPUT		0x8
+
+/**
+ * The Output item is used to define an output data field in a report. This
+ * item is similar to an Input item except it describes data sent to the
+ * device—for example, LED states.
+ */
+#define USB_HID_REPORT_TAG_OUTPUT		0x9
+
+/**
+ * Feature items describe device configuration information that can be sent to
+ * the device.
+ */
+#define USB_HID_REPORT_TAG_FEATURE		0xB
+
+/**
+ * A Collection item identifies a relationship between two or more data
+ * (Input, Output, or Feature.) 
+ */
+#define USB_HID_REPORT_TAG_COLLECTION		0xA
+
+/**
+ * While the Collection item opens a collection of data, the End Collection
+ * item closes a collection.
+ */
+#define USB_HID_REPORT_TAG_END_COLLECTION	0xC
+
+/*---------------------------------------------------------------------------*/
+
+/* GLOBAL ITEMS */
+
+/**
+ * Global items describe rather than define data from a control.
+ */
+#define USB_HID_TAG_CLASS_GLOBAL		0x1
+
+/**
+ * Unsigned integer specifying the current Usage Page. Since a usage are 32
+ * bit values, Usage Page items can be used to conserve space in a report
+ * descriptor by setting the high order 16 bits of a subsequent usages. Any
+ * usage that follows which is defines 16 bits or less is interpreted as a
+ * Usage ID and concatenated with the Usage Page to form a 32 bit Usage.
+ */
+#define USB_HID_REPORT_TAG_USAGE_PAGE		0x0
+
+/** 
+ * Extent value in logical units. This is the minimum value that a variable
+ * or array item will report. For example, a mouse reporting x position values
+ * from 0 to 128 would have a Logical Minimum of 0 and a Logical Maximum of
+ * 128.
+ */
+#define USB_HID_REPORT_TAG_LOGICAL_MINIMUM	0x1
+
+/** 
+ * Extent value in logical units. This is the maximum value that a variable
+ * or array item will report.
+ */
+#define USB_HID_REPORT_TAG_LOGICAL_MAXIMUM	0x2
+
+/** 
+ * Minimum value for the physical extent of a variable item. This represents
+ * the Logical Minimum with units applied to it.
+ */
+#define USB_HID_REPORT_TAG_PHYSICAL_MINIMUM 	0x3
+
+/** 
+ * Maximum value for the physical extent of a variable item.
+ */
+#define USB_HID_REPORT_TAG_PHYSICAL_MAXIMUM 	0x4
+
+/** 
+ * Value of the unit exponent in base 10. See the table later in this section
+ * for more information.
+ */
+#define USB_HID_REPORT_TAG_UNIT_EXPONENT	0x5
+
+/** 
+ * Unit values.
+ */
+#define USB_HID_REPORT_TAG_UNIT			0x6
+
+/** 
+ * Unsigned integer specifying the size of the report fields in bits. This
+ * allows the parser to build an item map for the report handler to use.
+ */
+#define USB_HID_REPORT_TAG_REPORT_SIZE		0x7
+
+/** 
+ * Unsigned value that specifies the Report ID. If a Report ID tag is used
+ * anywhere in Report descriptor, all data reports for the device are preceded
+ * by a single byte ID field. All items succeeding the first Report ID tag but
+ * preceding a second Report ID tag are included in a report prefixed by a
+ * 1-byte ID. All items succeeding the second but preceding a third Report ID
+ * tag are included in a second report prefixed by a second ID, and so on.
+ */
+#define USB_HID_REPORT_TAG_REPORT_ID		0x8
+
+/** 
+ * Unsigned integer specifying the number of data fields for the item;
+ * determines how many fields are included in the report for this particular
+ * item (and consequently how many bits are added to the report).
+ */
+#define USB_HID_REPORT_TAG_REPORT_COUNT		0x9
+
+/** 
+ * Places a copy of the global item state table on the stack.
+ */
+#define USB_HID_REPORT_TAG_PUSH			0xA
+
+/** 
+ * Replaces the item state table with the top structure from the stack.
+ */
+#define USB_HID_REPORT_TAG_POP			0xB
+
+/*---------------------------------------------------------------------------*/
+
+/* LOCAL ITEMS */
+
+/**
+ * Local item tags define characteristics of controls. These items do not
+ * carry over to the next Main item. If a Main item defines more than one
+ * control, it may be preceded by several similar Local item tags. For
+ * example, an Input item may have several Usage tags associated with it, one
+ * for each control.
+ */
+#define USB_HID_TAG_CLASS_LOCAL			0x2
+
+/**
+ * Usage index for an item usage; represents a suggested usage for the item or
+ * collection. In the case where an item represents multiple controls, a Usage
+ * tag may suggest a usage for every variable or element in an array.
+ */
+#define USB_HID_REPORT_TAG_USAGE		0x0
+
+/**
+ * Defines the starting usage associated with an array or bitmap.
+ */
+#define USB_HID_REPORT_TAG_USAGE_MINIMUM	0x1
+
+/**
+ * Defines the ending usage associated with an array or bitmap.
+ */
+#define USB_HID_REPORT_TAG_USAGE_MAXIMUM	0x2
+
+/**
+ * Determines the body part used for a control. Index points to a designator
+ * in the Physical descriptor.
+ */
+#define USB_HID_REPORT_TAG_DESIGNATOR_INDEX	0x3
+
+/**
+ * Defines the index of the starting designator associated with an array or
+ * bitmap.
+ */
+#define USB_HID_REPORT_TAG_DESIGNATOR_MINIMUM	0x4
+
+/**
+ * Defines the index of the ending designator associated with an array or
+ * bitmap.
+ */
+#define USB_HID_REPORT_TAG_DESIGNATOR_MAXIMUM	0x5
+
+/**
+ * String index for a String descriptor; allows a string to be associated with
+ * a particular item or control.
+ */
+#define USB_HID_REPORT_TAG_STRING_INDEX		0x7
+
+/**
+ * Specifies the first string index when assigning a group of sequential
+ * strings to controls in an array or bitmap.
+ */
+#define USB_HID_REPORT_TAG_STRING_MINIMUM	0x8
+
+/**
+ * Specifies the last string index when assigning a group of sequential
+ * strings to controls in an array or bitmap.
+ */
+#define USB_HID_REPORT_TAG_STRING_MAXIMUM	0x9
+
+/**
+ * Defines the beginning or end of a set of local items (1 = open set, 0 =
+ * close set).
+ *
+ * Usages other than the first (most preferred) usage defined are not
+ * accessible by system software.
+ */
+#define USB_HID_REPORT_TAG_DELIMITER		0xA
+
+/*---------------------------------------------------------------------------*/
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/hiddescriptor.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/hiddescriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/hiddescriptor.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2011 Matej Klonfar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * USB HID report descriptor and report data parser
+ */
+#ifndef LIBUSB_HIDDESCRIPTOR_H_
+#define LIBUSB_HIDDESCRIPTOR_H_
+
+#include <stdint.h>
+#include <adt/list.h>
+#include <usb/hid/hid_report_items.h>
+#include <usb/hid/hidpath.h>
+#include <usb/hid/hidtypes.h>
+
+int usb_hid_parse_report_descriptor(usb_hid_report_t *report, 
+		const uint8_t *data, size_t size);
+
+void usb_hid_free_report(usb_hid_report_t *report);
+
+void usb_hid_descriptor_print(usb_hid_report_t *report);
+
+int usb_hid_report_init(usb_hid_report_t *report);
+
+int usb_hid_report_append_fields(usb_hid_report_t *report,
+		usb_hid_report_item_t *report_item);
+
+usb_hid_report_description_t * usb_hid_report_find_description(
+		const usb_hid_report_t *report, uint8_t report_id,
+		usb_hid_report_type_t type);
+
+int usb_hid_report_parse_tag(uint8_t tag, uint8_t class, const uint8_t *data,
+		size_t item_size, usb_hid_report_item_t *report_item,
+		usb_hid_report_path_t *usage_path);
+
+int usb_hid_report_parse_main_tag(uint8_t tag, const uint8_t *data, 
+		size_t item_size, usb_hid_report_item_t *report_item,
+		usb_hid_report_path_t *usage_path);
+
+int usb_hid_report_parse_global_tag(uint8_t tag, const uint8_t *data, 
+		size_t item_size, usb_hid_report_item_t *report_item,
+		usb_hid_report_path_t *usage_path);
+
+int usb_hid_report_parse_local_tag(uint8_t tag, const uint8_t *data, 
+		size_t item_size, usb_hid_report_item_t *report_item,
+		usb_hid_report_path_t *usage_path);
+
+void usb_hid_descriptor_print_list(link_t *head);
+
+void usb_hid_report_reset_local_items(usb_hid_report_item_t *report_item);
+
+void usb_hid_free_report_list(link_t *head);
+
+usb_hid_report_item_t *usb_hid_report_item_clone(
+		const usb_hid_report_item_t *item);
+
+uint32_t usb_hid_report_tag_data_uint32(const uint8_t *data, size_t size);
+
+usb_hid_report_path_t *usb_hid_report_path_try_insert(usb_hid_report_t*report,
+		usb_hid_report_path_t *cmp_path);
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/hidparser.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/hidparser.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/hidparser.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2011 Matej Klonfar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * USB HID report descriptor and report data parser
+ */
+#ifndef LIBUSBHID_HIDPARSER_H_
+#define LIBUSBHID_HIDPARSER_H_
+
+#include <stdint.h>
+#include <adt/list.h>
+#include <usb/hid/hid_report_items.h>
+#include <usb/hid/hidpath.h>
+#include <usb/hid/hidtypes.h>
+#include <usb/hid/hiddescriptor.h>
+
+
+/*
+ * Input report parser functions
+ */
+int usb_hid_parse_report(const usb_hid_report_t *report, const uint8_t *data,
+		size_t size, uint8_t *report_id);
+
+/*
+ * Output report parser functions
+ */
+uint8_t *usb_hid_report_output(usb_hid_report_t *report, size_t *size, 
+		uint8_t report_id);
+
+void usb_hid_report_output_free(uint8_t *output);
+
+size_t usb_hid_report_size(usb_hid_report_t *report, uint8_t report_id,
+		usb_hid_report_type_t type);
+
+size_t usb_hid_report_byte_size(usb_hid_report_t *report, uint8_t report_id,
+		usb_hid_report_type_t type);
+
+
+int usb_hid_report_output_translate(usb_hid_report_t *report, 
+		uint8_t report_id, uint8_t *buffer, size_t size);
+
+
+/*
+ * Report descriptor structure observing functions
+ */
+usb_hid_report_field_t *usb_hid_report_get_sibling(usb_hid_report_t *report,
+		usb_hid_report_field_t *field, usb_hid_report_path_t *path,
+		int flags, usb_hid_report_type_t type);
+
+uint8_t usb_hid_get_next_report_id(usb_hid_report_t *report, 
+		uint8_t report_id, usb_hid_report_type_t type);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/hidpath.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/hidpath.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/hidpath.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2011 Matej Klonfar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * USB HID report descriptor and report data parser
+ */
+#ifndef LIBUSB_HIDPATH_H_
+#define LIBUSB_HIDPATH_H_
+
+#include <usb/hid/hidparser.h>
+#include <stdint.h>
+#include <adt/list.h>
+
+
+/*---------------------------------------------------------------------------*/
+/*
+ * Flags of usage paths comparison modes.
+ *
+ */
+/** Wanted usage path must be exactly the same as the searched one.  This
+ * option cannot be combined with the others. 
+ */
+#define USB_HID_PATH_COMPARE_STRICT		0
+
+/**
+ * Wanted usage path must be the suffix in the searched one.
+ */
+#define USB_HID_PATH_COMPARE_END		1
+
+/** 
+ * Only usage page are compared along the usage path.  This option can be
+ * combined with others. 
+ */
+#define USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY	2
+
+/** 
+ * Searched usage page must be prefix of the other one.
+ */
+#define USB_HID_PATH_COMPARE_BEGIN		4
+
+/** 
+ * Searched couple of usage page and usage can be anywhere in usage path.
+ * This option is deprecated.
+ */
+#define USB_HID_PATH_COMPARE_ANYWHERE		8
+
+/*----------------------------------------------------------------------------*/
+/** 
+ * Item of usage path structure. Last item of linked list describes one item
+ * in report, the others describe superior Collection tags. Usage and Usage
+ * page of report item can be changed due to data in report. 
+ */
+typedef struct {
+	/** Usage page of report item. Zero when usage page can be changed. */
+	uint32_t usage_page;
+	/** Usage of report item. Zero when usage can be changed. */	
+	uint32_t usage;
+
+	/** Attribute of Collection tag in report descriptor*/
+	uint8_t flags;
+
+	/** Linked list structure*/
+	link_t link;
+} usb_hid_report_usage_path_t;
+
+
+/*---------------------------------------------------------------------------*/
+/** 
+ * USB HID usage path structure.
+ * */
+typedef struct {
+	/** Length of usage path */	
+	int depth;	
+
+	/** Report id. Zero is reserved and means that report id is not used.
+	 * */
+	uint8_t report_id;
+	
+	/** Linked list structure. */	
+	link_t link; /* list */
+
+	/** Head of the list of usage path items. */
+	link_t head;
+
+} usb_hid_report_path_t;
+
+/*---------------------------------------------------------------------------*/
+usb_hid_report_path_t *usb_hid_report_path(void);
+
+void usb_hid_report_path_free(usb_hid_report_path_t *path);
+
+int usb_hid_report_path_set_report_id(usb_hid_report_path_t *usage_path,
+		uint8_t report_id);
+
+int usb_hid_report_path_append_item(usb_hid_report_path_t *usage_path, 
+		int32_t usage_page, int32_t usage);
+
+void usb_hid_report_remove_last_item(usb_hid_report_path_t *usage_path);
+
+void usb_hid_report_null_last_item(usb_hid_report_path_t *usage_path);
+
+void usb_hid_report_set_last_item(usb_hid_report_path_t *usage_path, 
+		int32_t tag, int32_t data);
+
+int usb_hid_report_compare_usage_path(usb_hid_report_path_t *report_path,
+		usb_hid_report_path_t *path, int flags);
+
+usb_hid_report_path_t *usb_hid_report_path_clone(
+		usb_hid_report_path_t *usage_path);
+
+void usb_hid_print_usage_path(usb_hid_report_path_t *path);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/hidreport.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/hidreport.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/hidreport.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * USB HID report parser initialization from descriptors.
+ */
+
+#ifndef LIBUSBHID_HIDREPORT_H_
+#define LIBUSBHID_HIDREPORT_H_
+
+#include <usb/dev/driver.h>
+#include <usb/hid/hidparser.h>
+
+/**
+ * Retrieves the Report descriptor from the USB device and initializes the
+ * report parser.
+ *
+ * \param[in] dev USB device representing a HID device.
+ * \param[in/out] parser HID Report parser.
+ * \param[out] report_desc Place to save report descriptor into.
+ * \param[out] report_size
+ *
+ * \retval EOK if successful.
+ * \retval EINVAL if one of the parameters is not given (is NULL).
+ * \retval ENOENT if there are some descriptors missing.
+ * \retval ENOMEM if an error with allocation occured.
+ * \retval EINVAL if the Report descriptor's size does not match the size 
+ *         from the interface descriptor.
+ * \return Other value inherited from function usb_pipe_start_session(),
+ *         usb_pipe_end_session() or usb_request_get_descriptor().
+ */
+int usb_hid_process_report_descriptor(usb_device_t *dev, 
+    usb_hid_report_t *report, uint8_t **report_desc, size_t *report_size);
+
+#endif /* LIBUSB_HIDREPORT_H_ */
+
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/hidtypes.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/hidtypes.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/hidtypes.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,322 @@
+/*
+ * Copyright (c) 2011 Matej Klonfar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusb
+ * @{
+ */
+/** @file
+ * Basic data structures for USB HID Report descriptor and report parser.
+ */
+#ifndef LIBUSB_HIDTYPES_H_
+#define LIBUSB_HIDTYPES_H_
+
+#include <stdint.h>
+#include <adt/list.h>
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Maximum amount of specified usages for one report item
+ */
+#define USB_HID_MAX_USAGES	0xffff
+
+/**
+ * Converts integer from unsigned two's complement format format to signed
+ * one.
+ *
+ * @param x Number to convert
+ * @param size Length of the unsigned number in bites
+ * @return signed int
+ */
+#define USB_HID_UINT32_TO_INT32(x, size)	\
+	((((x) & (1 << ((size) - 1))) != 0) ?   \
+	 -(~((x) - 1) & ((1 << size) - 1)) : (x))
+
+/**
+ * Convert integer from signed format to unsigned. If number is negative the
+ * two's complement format is used.
+ *
+ * @param x Number to convert
+ * @param size Length of result number in bites
+ * @return unsigned int
+ */
+#define USB_HID_INT32_TO_UINT32(x, size)	\
+	(((x) < 0 ) ? ((1 << (size)) + (x)) : (x))
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Enum of report types
+ */
+typedef enum {
+	/** Input report. Data are sent from device to system */
+	USB_HID_REPORT_TYPE_INPUT = 1,
+
+	/** Output report. Data are sent from system to device */
+	USB_HID_REPORT_TYPE_OUTPUT = 2,
+
+	/** Feature report. Describes device configuration information that
+	 * can be sent to the device */
+	USB_HID_REPORT_TYPE_FEATURE = 3
+} usb_hid_report_type_t;
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Description of all reports described in one report descriptor.
+ */
+typedef struct {
+	/** Count of available reports. */
+	int report_count;
+
+	/** Head of linked list of description of reports. */
+	link_t reports;
+
+	/** Head of linked list of all used usage/collection paths. */
+	link_t collection_paths;
+
+	/** Length of list of usage paths. */
+	int collection_paths_count;
+
+	/** Flag whether report ids are used. */
+	int use_report_ids;
+
+	/** Report id of last parsed report. */
+	uint8_t last_report_id;
+	
+} usb_hid_report_t;
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Description of one concrete report
+ */
+typedef struct {
+	/** Report id. Zero when no report id is used. */
+	uint8_t report_id;
+
+	/** Type of report */
+	usb_hid_report_type_t type;
+
+	/** Bit length of the report */
+	size_t bit_length;
+
+	/** Number of items in report */
+	size_t item_length;
+	
+	/** Linked list of report items in report */
+	link_t report_items;
+
+	/** Linked list of descriptions. */
+	link_t link;
+} usb_hid_report_description_t;
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Description of one field/item in report 
+ */
+typedef struct {
+	/** Bit offset of the field */
+	int offset;
+
+	/** Bit size of the field */
+	size_t size;
+
+	/** Usage page. Zero when usage page can be changed. */
+	uint16_t usage_page;
+
+	/** Usage. Zero when usage can be changed. */
+	uint16_t usage;
+
+	/** Item's attributes */
+	uint8_t item_flags;
+
+	/** Usage/Collection path of the field. */
+	usb_hid_report_path_t *collection_path;
+
+	/** 
+	 * The lowest valid logical value (value with the device operates)
+	 */
+	int32_t logical_minimum;
+
+	/**
+	 * The greatest valid logical value
+	 */
+	int32_t logical_maximum;
+
+	/**
+	 * The lowest valid physical value (value with the system operates)
+	 */
+	int32_t physical_minimum;
+
+	/** The greatest valid physical value */
+	int32_t physical_maximum;
+
+	/** The lowest valid usage index */
+	int32_t usage_minimum;
+
+	/** The greatest valid usage index */
+	int32_t usage_maximum;
+	
+	/** Unit of the value */
+	uint32_t unit;
+
+	/** Unit exponent */
+	uint32_t unit_exponent;
+
+	/** Array of possible usages */
+	uint32_t *usages;
+
+	/** Size of the array of usages */
+	size_t usages_count;
+
+	/** Parsed value */
+	int32_t value;
+
+	/** List to another report items */
+	link_t link;
+} usb_hid_report_field_t;
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * State table for report descriptor parsing
+ */
+typedef struct {
+	/** report id */	
+	int32_t id;
+	
+	/** Extended usage page */
+	uint16_t extended_usage_page;
+
+	/** Array of usages specified for this item */
+	uint32_t usages[USB_HID_MAX_USAGES];
+	
+	/** Length of usages array */
+	int usages_count;
+
+	/** Usage page*/
+	uint32_t usage_page;
+
+	/** Minimum valid usage index */	
+	int32_t usage_minimum;
+	
+	/** Maximum valid usage index */	
+	int32_t usage_maximum;
+	
+	/** Minimum valid logical value */	
+	int32_t logical_minimum;
+	
+	/** Maximum valid logical value */	
+	int32_t logical_maximum;
+
+	/** Length of the items in bits*/	
+	int32_t size;
+
+	/** COunt of items*/	
+	int32_t count;
+
+	/**  Bit offset of the item in report */	
+	size_t offset;
+
+	/** Unit exponent */	
+	int32_t unit_exponent;
+	/** Unit of the value */	
+	int32_t unit;
+
+	/** String index */
+	uint32_t string_index;
+
+	/** Minimum valid string index */	
+	uint32_t string_minimum;
+
+	/** Maximum valid string index */	
+	uint32_t string_maximum;
+
+	/** The designator index */	
+	uint32_t designator_index;
+
+	/** Minimum valid designator value*/	
+	uint32_t designator_minimum;
+
+	/** Maximum valid designator value*/	
+	uint32_t designator_maximum;
+
+	/** Minimal valid physical value*/	
+	int32_t physical_minimum;
+
+	/** Maximal valid physical value */	
+	int32_t physical_maximum;
+
+	/** Items attributes*/	
+	uint8_t item_flags;
+
+	/** Report type */
+	usb_hid_report_type_t type;
+
+	/** current collection path*/	
+	usb_hid_report_path_t *usage_path;
+
+	/** Unused*/	
+	link_t link;
+
+	int in_delimiter;
+} usb_hid_report_item_t;
+/*---------------------------------------------------------------------------*/
+/**
+ * Enum of the keyboard modifiers 
+ */
+typedef enum {
+	USB_HID_MOD_LCTRL = 0x01,
+	USB_HID_MOD_LSHIFT = 0x02,
+	USB_HID_MOD_LALT = 0x04,
+	USB_HID_MOD_LGUI = 0x08,
+	USB_HID_MOD_RCTRL = 0x10,
+	USB_HID_MOD_RSHIFT = 0x20,
+	USB_HID_MOD_RALT = 0x40,
+	USB_HID_MOD_RGUI = 0x80,
+	USB_HID_MOD_COUNT = 8
+} usb_hid_modifiers_t;
+
+static const usb_hid_modifiers_t 
+    usb_hid_modifiers_consts[USB_HID_MOD_COUNT] = {
+	USB_HID_MOD_LCTRL,
+	USB_HID_MOD_LSHIFT,
+	USB_HID_MOD_LALT,
+	USB_HID_MOD_LGUI,
+	USB_HID_MOD_RCTRL,
+	USB_HID_MOD_RSHIFT,
+	USB_HID_MOD_RALT,
+	USB_HID_MOD_RGUI
+};
+/*---------------------------------------------------------------------------*/
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/iface.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/iface.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * Client functions for accessing USB HID interface.
+ */
+#ifndef LIBUSBHID_CLASSES_HID_IFACE_H_
+#define LIBUSBHID_CLASSES_HID_IFACE_H_
+
+#include <sys/types.h>
+
+int usbhid_dev_get_event_length(int, size_t *);
+int usbhid_dev_get_event(int, uint8_t *, size_t, size_t *, int *,
+    unsigned int);
+int usbhid_dev_get_report_descriptor_length(int, size_t *);
+int usbhid_dev_get_report_descriptor(int, uint8_t *, size_t, size_t *);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/request.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/request.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/request.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * HID class-specific requests.
+ */
+
+#ifndef USB_KBD_HIDREQ_H_
+#define USB_KBD_HIDREQ_H_
+
+#include <stdint.h>
+
+#include <usb/hid/hid.h>
+#include <usb/dev/pipes.h>
+
+/*----------------------------------------------------------------------------*/
+
+int usbhid_req_set_report(usb_pipe_t *ctrl_pipe, int iface_no,
+    usb_hid_report_type_t type, uint8_t *buffer, size_t buf_size);
+
+int usbhid_req_set_protocol(usb_pipe_t *ctrl_pipe, int iface_no, 
+    usb_hid_protocol_t protocol);
+
+int usbhid_req_set_idle(usb_pipe_t *ctrl_pipe, int iface_no, uint8_t duration);
+
+int usbhid_req_get_report(usb_pipe_t *ctrl_pipe, int iface_no, 
+    usb_hid_report_type_t type, uint8_t *buffer, size_t buf_size, 
+    size_t *actual_size);
+
+int usbhid_req_get_protocol(usb_pipe_t *ctrl_pipe, int iface_no, 
+    usb_hid_protocol_t *protocol);
+
+int usbhid_req_get_idle(usb_pipe_t *ctrl_pipe, int iface_no, uint8_t *duration);
+
+/*----------------------------------------------------------------------------*/
+
+#endif /* USB_KBD_HIDREQ_H_ */
+
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/usages/consumer.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/usages/consumer.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/usages/consumer.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * USB multimedia key usage to string mapping.
+ */
+
+#ifndef LIBUSBHID_CONSUMER_H_
+#define LIBUSBHID_CONSUMER_H_
+
+const char *usbhid_multimedia_usage_to_str(int usage);
+
+#endif /* LIBUSBHID_CONSUMER_H_ */
+
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/usages/core.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/usages/core.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/usages/core.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * @brief USB HID Usage Tables.
+ */
+#ifndef LIBUSBHID_HIDUT_H_
+#define LIBUSBHID_HIDUT_H_
+
+/** USB/HID Usage Pages. */
+typedef enum {
+	USB_HIDUT_PAGE_GENERIC_DESKTOP = 1,
+	USB_HIDUT_PAGE_SIMULATION = 2,
+	USB_HIDUT_PAGE_VR = 3,
+	USB_HIDUT_PAGE_SPORT = 4,
+	USB_HIDUT_PAGE_GAME = 5,
+	USB_HIDUT_PAGE_GENERIC_DEVICE = 6,
+	USB_HIDUT_PAGE_KEYBOARD = 7,
+	USB_HIDUT_PAGE_LED = 8,
+	USB_HIDUT_PAGE_BUTTON = 9,
+	USB_HIDUT_PAGE_ORDINAL = 0x0a,
+	USB_HIDUT_PAGE_TELEPHONY_DEVICE = 0x0b,
+	USB_HIDUT_PAGE_CONSUMER = 0x0c
+} usb_hidut_usage_page_t;
+
+/** Usages for Generic Desktop Page. */
+typedef enum {
+	USB_HIDUT_USAGE_GENERIC_DESKTOP_POINTER = 1,
+	USB_HIDUT_USAGE_GENERIC_DESKTOP_MOUSE = 2,
+	USB_HIDUT_USAGE_GENERIC_DESKTOP_JOYSTICK = 4,
+	USB_HIDUT_USAGE_GENERIC_DESKTOP_GAMEPAD = 5,
+	USB_HIDUT_USAGE_GENERIC_DESKTOP_KEYBOARD = 6,
+	USB_HIDUT_USAGE_GENERIC_DESKTOP_KEYPAD = 7,
+	USB_HIDUT_USAGE_GENERIC_DESKTOP_X = 0x30,
+	USB_HIDUT_USAGE_GENERIC_DESKTOP_Y = 0x31,
+	USB_HIDUT_USAGE_GENERIC_DESKTOP_WHEEL = 0x38
+	/* USB_HIDUT_USAGE_GENERIC_DESKTOP_ = , */
+	
+} usb_hidut_usage_generic_desktop_t;
+
+typedef enum {
+	USB_HIDUT_USAGE_CONSUMER_CONSUMER_CONTROL = 1
+} usb_hidut_usage_consumer_t;
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/include/usb/hid/usages/kbdgen.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/usages/kbdgen.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/usages/kbdgen.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,175 @@
+/*
+ * Copyright (c) 2010 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * @brief USB HID key codes.
+ * @details
+ * This is not a typical header as by default it is equal to empty file.
+ * However, by cleverly defining the USB_HIDUT_KBD_KEY you can use it
+ * to generate conversion tables etc.
+ *
+ * For example, this creates enum for known keys:
+ * @code
+#define USB_HIDUT_KBD_KEY(name, usage_id, l, lc, l1, l2) \
+	USB_KBD_KEY_##name = usage_id,
+typedef enum {
+	#include <usb/hidutkbd.h>
+} usb_key_code_t;
+ @endcode
+ *
+ * Maybe, it might be better that you would place such enums into separate
+ * files and create them as separate step before compiling to allow tools
+ * such as Doxygen get the definitions right.
+ *
+ * @warning This file does not include guard to prevent multiple inclusions
+ * into a single file.
+ */
+
+
+#ifndef USB_HIDUT_KBD_KEY
+/** Declare keyboard key.
+ * @param name Key name (identifier).
+ * @param usage_id Key code (see Keyboard/Keypad Page (0x07) in HUT1.12.
+ * @param letter Corresponding character (0 if not applicable).
+ * @param letter_caps Corresponding character with Caps on.
+ * @param letter_mod1 Corresponding character with modifier #1 on.
+ * @param letter_mod2 Corresponding character with modifier #2 on.
+ */
+#define USB_HIDUT_KBD_KEY(name, usage_id, letter, letter_caps, letter_mod1, letter_mod2)
+
+#endif
+
+#define __NONPRINT(name, usage_id) \
+	USB_HIDUT_KBD_KEY(name, usage_id, 0, 0, 0, 0)
+
+/* US alphabet letters */
+USB_HIDUT_KBD_KEY(A, 0x04, 'a', 'A', 0, 0)
+USB_HIDUT_KBD_KEY(B, 0x05, 'b', 'B', 0, 0)
+USB_HIDUT_KBD_KEY(C, 0x06, 'c', 'C', 0, 0)
+USB_HIDUT_KBD_KEY(D, 0x07, 'd', 'D', 0, 0)
+USB_HIDUT_KBD_KEY(E, 0x08, 'e', 'E', 0, 0)
+USB_HIDUT_KBD_KEY(F, 0x09, 'f', 'F', 0, 0)
+USB_HIDUT_KBD_KEY(G, 0x0A, 'g', 'G', 0, 0)
+USB_HIDUT_KBD_KEY(H, 0x0B, 'h', 'H', 0, 0)
+USB_HIDUT_KBD_KEY(I, 0x0C, 'i', 'I', 0, 0)
+USB_HIDUT_KBD_KEY(J, 0x0D, 'j', 'J', 0, 0)
+USB_HIDUT_KBD_KEY(K, 0x0E, 'k', 'K', 0, 0)
+USB_HIDUT_KBD_KEY(L, 0x0F, 'l', 'L', 0, 0)
+USB_HIDUT_KBD_KEY(M, 0x10, 'm', 'M', 0, 0)
+USB_HIDUT_KBD_KEY(N, 0x11, 'n', 'N', 0, 0)
+USB_HIDUT_KBD_KEY(O, 0x12, 'o', 'O', 0, 0)
+USB_HIDUT_KBD_KEY(P, 0x13, 'p', 'P', 0, 0)
+USB_HIDUT_KBD_KEY(Q, 0x14, 'q', 'Q', 0, 0)
+USB_HIDUT_KBD_KEY(R, 0x15, 'r', 'R', 0, 0)
+USB_HIDUT_KBD_KEY(S, 0x16, 's', 'S', 0, 0)
+USB_HIDUT_KBD_KEY(T, 0x17, 't', 'T', 0, 0)
+USB_HIDUT_KBD_KEY(U, 0x18, 'u', 'U', 0, 0)
+USB_HIDUT_KBD_KEY(V, 0x19, 'v', 'V', 0, 0)
+USB_HIDUT_KBD_KEY(W, 0x1A, 'w', 'W', 0, 0)
+USB_HIDUT_KBD_KEY(X, 0x1B, 'x', 'X', 0, 0)
+USB_HIDUT_KBD_KEY(Y, 0x1C, 'y', 'Y', 0, 0)
+USB_HIDUT_KBD_KEY(Z, 0x1D, 'z', 'Z', 0, 0)
+
+/* Keyboard digits */
+USB_HIDUT_KBD_KEY(1, 0x1E, '1', '!', 0, 0)
+USB_HIDUT_KBD_KEY(2, 0x1F, '2', '@', 0, 0)
+USB_HIDUT_KBD_KEY(3, 0x20, '3', '#', 0, 0)
+USB_HIDUT_KBD_KEY(4, 0x21, '4', '$', 0, 0)
+USB_HIDUT_KBD_KEY(5, 0x22, '5', '%', 0, 0)
+USB_HIDUT_KBD_KEY(6, 0x23, '6', '^', 0, 0)
+USB_HIDUT_KBD_KEY(7, 0x24, '7', '&', 0, 0)
+USB_HIDUT_KBD_KEY(8, 0x25, '8', '*', 0, 0)
+USB_HIDUT_KBD_KEY(9, 0x26, '9', '(', 0, 0)
+USB_HIDUT_KBD_KEY(0, 0x27, '0', ')', 0, 0)
+
+/* More-or-less typewriter command keys */
+USB_HIDUT_KBD_KEY(ENTER, 0x28, '\n', 0, 0, 0)
+USB_HIDUT_KBD_KEY(ESCAPE, 0x29, 0, 0, 0, 0)
+USB_HIDUT_KBD_KEY(BACKSPACE, 0x2A, '\b', 0, 0, 0)
+USB_HIDUT_KBD_KEY(TAB, 0x2B, '\t', 0, 0, 0)
+USB_HIDUT_KBD_KEY(SPACE, 0x2C, ' ', 0, 0, 0)
+
+/* Special (printable) characters */
+USB_HIDUT_KBD_KEY(DASH, 0x2D, '-', '_', 0, 0)
+USB_HIDUT_KBD_KEY(EQUALS, 0x2E, '=', '+', 0, 0)
+USB_HIDUT_KBD_KEY(LEFT_BRACKET, 0x2F, '[', '{', 0, 0)
+USB_HIDUT_KBD_KEY(RIGHT_BRACKET, 0x30, ']', '}', 0, 0)
+USB_HIDUT_KBD_KEY(BACKSLASH, 0x31, '\\', '|', 0, 0)
+USB_HIDUT_KBD_KEY(HASH, 0x32, '#', '~', 0, 0)
+USB_HIDUT_KBD_KEY(SEMICOLON, 0x33, ';', ':', 0, 0)
+USB_HIDUT_KBD_KEY(APOSTROPHE, 0x34, '\'', '"', 0, 0)
+USB_HIDUT_KBD_KEY(GRAVE_ACCENT, 0x35, '`', '~', 0, 0)
+USB_HIDUT_KBD_KEY(COMMA, 0x36, ',', '<', 0, 0)
+USB_HIDUT_KBD_KEY(PERIOD, 0x37, '.', '>', 0, 0)
+USB_HIDUT_KBD_KEY(SLASH, 0x38, '/', '?', 0, 0)
+
+USB_HIDUT_KBD_KEY(CAPS_LOCK, 0x39, 0, 0, 0, 0)
+
+/* Function keys */
+__NONPRINT( F1, 0x3A)
+__NONPRINT( F2, 0x3B)
+__NONPRINT( F3, 0x3C)
+__NONPRINT( F4, 0x3D)
+__NONPRINT( F5, 0x3E)
+__NONPRINT( F6, 0x3F)
+__NONPRINT( F7, 0x40)
+__NONPRINT( F8, 0x41)
+__NONPRINT( F9, 0x42)
+__NONPRINT(F10, 0x43)
+__NONPRINT(F11, 0x44)
+__NONPRINT(F12, 0x45)
+
+/* Cursor movement keys & co. */
+__NONPRINT(PRINT_SCREEN, 0x46)
+__NONPRINT(SCROLL_LOCK, 0x47)
+__NONPRINT(PAUSE, 0x48)
+__NONPRINT(INSERT, 0x49)
+__NONPRINT(HOME, 0x4A)
+__NONPRINT(PAGE_UP, 0x4B)
+__NONPRINT(DELETE, 0x4C)
+__NONPRINT(END, 0x4D)
+__NONPRINT(PAGE_DOWN, 0x4E)
+__NONPRINT(RIGHT_ARROW, 0x4F)
+__NONPRINT(LEFT_ARROW, 0x50)
+__NONPRINT(DOWN_ARROW, 0x51)
+__NONPRINT(UP_ARROW, 0x52)
+
+
+
+
+/* USB_HIDUT_KBD_KEY(, 0x, '', '', 0, 0) */
+
+#undef __NONPRINT
+
+/**
+ * @}
+ */
+
Index: uspace/lib/usbhid/include/usb/hid/usages/led.h
===================================================================
--- uspace/lib/usbhid/include/usb/hid/usages/led.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/include/usb/hid/usages/led.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2010 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * @brief USB HID Usage Tables - LED page.
+ */
+#ifndef LIBUSBHID_UTLED_H_
+#define LIBUSBHID_UTLED_H_
+
+typedef enum {
+	USB_HID_LED_UNDEFINED = 0,
+	USB_HID_LED_NUM_LOCK,
+	USB_HID_LED_CAPS_LOCK,
+	USB_HID_LED_SCROLL_LOCK,
+	USB_HID_LED_COMPOSE,
+	USB_HID_LED_KANA,
+	USB_HID_LED_POWER,
+	USB_HID_LED_SHIFT,
+	USB_HID_LED_DND,
+	USB_HID_LED_MUTE,
+	USB_HID_LED_TONE_ENABLE,
+	USB_HID_LED_HIGH_CUT_FILTER,
+	USB_HID_LED_LOW_CUT_FILTER,
+	USB_HID_LED_EQ_ENABLE,
+	USB_HID_LED_SOUND_FIELD_ON,
+	USB_HID_LED_SURROUND_ON,
+	USB_HID_LED_REPEAT,
+	USB_HID_LED_STEREO,
+	USB_HID_LED_SAMPLING_RATE_DETECT,
+	USB_HID_LED_SPINNING,
+	USB_HID_LED_CAV,
+	USB_HID_LED_CLV,
+	USB_HID_LED_RECORDING_FORMAT_DETECT,
+	USB_HID_LED_OFF_HOOK,
+	USB_HID_LED_RING,
+	USB_HID_LED_MESSAGE_WAITING,
+	USB_HID_LED_DATA_MODE,
+	USB_HID_LED_BATTERY_OPERATION,
+	USB_HID_LED_BATTERY_OK,
+	USB_HID_LED_BATTERY_LOW,
+	USB_HID_LED_SPEAKER,
+	USB_HID_LED_HEAD_SET,
+	USB_HID_LED_HOLD,
+	USB_HID_LED_MICRO,
+	USB_HID_LED_COVERAGE,
+	USB_HID_LED_NIGHT_MODE,
+	USB_HID_LED_SEND_CALLS,
+	USB_HID_LED_CALL_PICKUP,
+	USB_HID_LED_CONFERENCE,
+	USB_HID_LED_STAND_BY,
+	USB_HID_LED_CAMERA_ON,
+	USB_HID_LED_CAMERA_OFF,
+	USB_HID_LED_ON_LINE,
+	USB_HID_LED_OFF_LINE,
+	USB_HID_LED_BUSY,
+	USB_HID_LED_READY,
+	USB_HID_LED_PAPER_OUT,
+	USB_HID_LED_PAPER_JAM,
+	USB_HID_LED_REMOTE,
+	USB_HID_LED_FORWARD,
+	USB_HID_LED_REVERSE,
+	USB_HID_LED_STOP,
+	USB_HID_LED_REWIND,
+	USB_HID_LED_FAST_FORWARD,
+	USB_HID_LED_PLAY,
+	USB_HID_LED_PAUSE,
+	USB_HID_LED_RECORD,
+	USB_HID_LED_ERROR,
+	USB_HID_LED_USAGE_SELECTED_IND,
+	USB_HID_LED_USAGE_IN_USE_IND,
+	USB_HID_LED_USAGE_MULTI_MODE_IND,
+	USB_HID_LED_IND_ON,
+	USB_HID_LED_IND_FLASH,
+	USB_HID_LED_IND_SLOW_BLINK,
+	USB_HID_LED_IND_FAST_BLINK,
+	USB_HID_LED_IND_OFF,
+	USB_HID_LED_FLASH_ON_TIME,
+	USB_HID_LED_SLOW_BLINK_ON_TIME,
+	USB_HID_LED_SLOW_BLINK_OFF_TIME,
+	USB_HID_LED_FAST_BLINK_ON_TIME,
+	USB_HID_LED_FAST_BLINK_OFF_TIME,
+	USB_HID_LED_USAGE_IND_COLOR,
+	USB_HID_LED_IND_RED,
+	USB_HID_LED_IND_GREEN,
+	USB_HID_LED_IND_AMBER,
+	USB_HID_LED_GENERIC_IND,
+	USB_HID_LED_SYSTEM_SUSPEND,
+	USB_HID_LED_EXTERNAL_POWER
+} usb_hid_usage_led_t;
+
+#endif /* LIBUSB_UTLED_H_ */
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/src/consumer.c
===================================================================
--- uspace/lib/usbhid/src/consumer.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/src/consumer.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,732 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * UUSB multimedia key usage, to string mapping.
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <usb/hid/usages/consumer.h>
+
+static const char *usbhid_consumer_usage_str[0x29d] = {
+	[0x01] = "Consumer Control",
+	[0x02] = "Numeric Key Pad",
+	[0x03] = "Programmable Buttons",
+	[0x04] = "Microphone",
+	[0x05] = "Headphone",
+	[0x06] = "Graphic Equalizer",
+	[0x07] = "Reserved",
+	[0x08] = "Reserved",
+	[0x09] = "Reserved",
+	[0x0a] = "Reserved",
+	[0x0b] = "Reserved",
+	[0x0c] = "Reserved",
+	[0x0d] = "Reserved",
+	[0x0e] = "Reserved",
+	[0x0f] = "Reserved",
+	[0x10] = "Reserved",
+	[0x11] = "Reserved",
+	[0x12] = "Reserved",
+	[0x13] = "Reserved",
+	[0x14] = "Reserved",
+	[0x15] = "Reserved",
+	[0x16] = "Reserved",
+	[0x17] = "Reserved",
+	[0x18] = "Reserved",
+	[0x19] = "Reserved",
+	[0x1a] = "Reserved",
+	[0x1b] = "Reserved",
+	[0x1c] = "Reserved",
+	[0x1d] = "Reserved",
+	[0x1e] = "Reserved",
+	[0x1f] = "Reserved",
+	[0x20] = "+10",
+	[0x21] = "+100",
+	[0x22] = "AM/PM",
+	[0x23] = "Reserved",
+	[0x24] = "Reserved",
+	[0x25] = "Reserved",
+	[0x26] = "Reserved",
+	[0x27] = "Reserved",
+	[0x28] = "Reserved",
+	[0x29] = "Reserved",
+	[0x2a] = "Reserved",
+	[0x2b] = "Reserved",
+	[0x2c] = "Reserved",
+	[0x2d] = "Reserved",
+	[0x2e] = "Reserved",
+	[0x2f] = "Reserved",
+	[0x30] = "Reserved",
+	[0x31] = "Reserved",
+	[0x32] = "Reserved",
+	[0x33] = "Reserved",
+	[0x34] = "Reserved",
+	[0x35] = "Reserved",
+	[0x36] = "Reserved",
+	[0x37] = "Reserved",
+	[0x38] = "Reserved",
+	[0x39] = "Reserved",
+	[0x3a] = "Reserved",
+	[0x3b] = "Reserved",
+	[0x3c] = "Reserved",
+	[0x3d] = "Reserved",
+	[0x3e] = "Reserved",
+	[0x3f] = "Reserved",
+	[0x40] = "Menu",
+	[0x41] = "Menu Pick",
+	[0x42] = "Menu Up",
+	[0x43] = "Menu Down",
+	[0x44] = "Menu Left",
+	[0x45] = "Menu Right",
+	[0x46] = "Menu Escape",
+	[0x47] = "Menu Value Increase",
+	[0x48] = "Menu Value Decrease",
+	[0x49] = "Reserved",
+	[0x4a] = "Reserved",
+	[0x4b] = "Reserved",
+	[0x4c] = "Reserved",
+	[0x4d] = "Reserved",
+	[0x4e] = "Reserved",
+	[0x4f] = "Reserved",
+	[0x50] = "Reserved",
+	[0x51] = "Reserved",
+	[0x52] = "Reserved",
+	[0x53] = "Reserved",
+	[0x54] = "Reserved",
+	[0x55] = "Reserved",
+	[0x56] = "Reserved",
+	[0x57] = "Reserved",
+	[0x58] = "Reserved",
+	[0x59] = "Reserved",
+	[0x5a] = "Reserved",
+	[0x5b] = "Reserved",
+	[0x5c] = "Reserved",
+	[0x5d] = "Reserved",
+	[0x5e] = "Reserved",
+	[0x5f] = "Reserved",
+	[0x60] = "Data On Screen",
+	[0x61] = "Closed Caption",
+	[0x62] = "Closed Caption Select",
+	[0x63] = "VCR/TV",
+	[0x64] = "Broadcast Mode",
+	[0x65] = "Snapshot",
+	[0x66] = "Still",
+	[0x67] = "Reserved",
+	[0x68] = "Reserved",
+	[0x69] = "Reserved",
+	[0x6a] = "Reserved",
+	[0x6b] = "Reserved",
+	[0x6c] = "Reserved",
+	[0x6d] = "Reserved",
+	[0x6e] = "Reserved",
+	[0x6f] = "Reserved",
+	[0x70] = "Reserved",
+	[0x71] = "Reserved",
+	[0x72] = "Reserved",
+	[0x73] = "Reserved",
+	[0x74] = "Reserved",
+	[0x75] = "Reserved",
+	[0x76] = "Reserved",
+	[0x77] = "Reserved",
+	[0x78] = "Reserved",
+	[0x79] = "Reserved",
+	[0x7a] = "Reserved",
+	[0x7b] = "Reserved",
+	[0x7c] = "Reserved",
+	[0x7d] = "Reserved",
+	[0x7e] = "Reserved",
+	[0x7f] = "Reserved",
+	[0x80] = "Selection",
+	[0x81] = "Assign Selection",
+	[0x82] = "Mode Step",
+	[0x83] = "Recall Last",
+	[0x84] = "Enter Channel",
+	[0x85] = "Order Movie",
+	[0x86] = "Channel",
+	[0x87] = "Media Selection",
+	[0x88] = "Media Select Computer",
+	[0x89] = "Media Select TV",
+	[0x8a] = "Media Select WWW",
+	[0x8b] = "Media Select DVD",
+	[0x8c] = "Media Select Telephone",
+	[0x8d] = "Media Select Program Guide",
+	[0x8e] = "Media Select Video Phone",
+	[0x8f] = "Media Select Games",
+	[0x90] = "Media Select Messages",
+	[0x91] = "Media Select CD",
+	[0x92] = "Media Select VCR",
+	[0x93] = "Media Select Tuner",
+	[0x94] = "Quit",
+	[0x95] = "Help",
+	[0x96] = "Media Select Tape",
+	[0x97] = "Media Select Cable",
+	[0x98] = "Media Select Satellite",
+	[0x99] = "Media Select Security",
+	[0x9a] = "Media Select Home",
+	[0x9b] = "Media Select Call",
+	[0x9c] = "Channel Increment",
+	[0x9d] = "Channel Decrement",
+	[0x9e] = "Media Select SAP",
+	[0x9f] = "Reserved",
+	[0xa0] = "VCR Plus",
+	[0xa1] = "Once",
+	[0xa2] = "Daily",
+	[0xa3] = "Weekly",
+	[0xa4] = "Monthly",
+	[0xa5] = "Reserved",
+	[0xa6] = "Reserved",
+	[0xa7] = "Reserved",
+	[0xa8] = "Reserved",
+	[0xa9] = "Reserved",
+	[0xaa] = "Reserved",
+	[0xab] = "Reserved",
+	[0xac] = "Reserved",
+	[0xad] = "Reserved",
+	[0xae] = "Reserved",
+	[0xaf] = "Reserved",
+	[0xb0] = "Play",
+	[0xb1] = "Pause",
+	[0xb2] = "Record",
+	[0xb3] = "Fast Forward",
+	[0xb4] = "Rewind",
+	[0xb5] = "Scan Next Track",
+	[0xb6] = "Scan Previous Trac",
+	[0xb7] = "Stop",
+	[0xb8] = "Eject",
+	[0xb9] = "Random Play",
+	[0xba] = "Select Disc",
+	[0xbb] = "Enter Disc",
+	[0xbc] = "Repeat",
+	[0xbd] = "Tracking",
+	[0xbe] = "Track Normal",
+	[0xbf] = "Slow Tracking",
+	[0xc0] = "Frame Forward",
+	[0xc1] = "Frame Back",
+	[0xc2] = "Mark",
+	[0xc3] = "Clear Mark",
+	[0xc4] = "Repeat From Mark",
+	[0xc5] = "Return to Mark",
+	[0xc6] = "Search Mark Forward",
+	[0xc7] = "Search Mark Backwards",
+	[0xc8] = "Counter Reset",
+	[0xc9] = "Show Counter",
+	[0xca] = "Tracking Increment",
+	[0xcb] = "Tracking Decrement",
+	[0xcc] = "Stop/Eject",
+	[0xcd] = "Play/Pause",
+	[0xce] = "Play/Skip",
+	[0xcf] = "Reserved",
+	[0xd0] = "Reserved",
+	[0xd1] = "Reserved",
+	[0xd2] = "Reserved",
+	[0xd3] = "Reserved",
+	[0xd4] = "Reserved",
+	[0xd5] = "Reserved",
+	[0xd6] = "Reserved",
+	[0xd7] = "Reserved",
+	[0xd8] = "Reserved",
+	[0xd9] = "Reserved",
+	[0xda] = "Reserved",
+	[0xdb] = "Reserved",
+	[0xdc] = "Reserved",
+	[0xdd] = "Reserved",
+	[0xde] = "Reserved",
+	[0xdf] = "Reserved",
+	[0xe0] = "Volume",
+	[0xe1] = "Balance",
+	[0xe2] = "Mute",
+	[0xe3] = "Bass",
+	[0xe4] = "Treble",
+	[0xe5] = "Bass Boost",
+	[0xe6] = "Surround Mode",
+	[0xe7] = "Loudness",
+	[0xe8] = "MPX",
+	[0xe9] = "Volume Increment",
+	[0xea] = "Volume Decrement",
+	[0xeb] = "Reserved",
+	[0xec] = "Reserved",
+	[0xed] = "Reserved",
+	[0xee] = "Reserved",
+	[0xef] = "Reserved",
+	[0xf0] = "Speed Select",
+	[0xf1] = "Playback Speed",
+	[0xf2] = "Standard Play",
+	[0xf3] = "Long Play",
+	[0xf4] = "Extended Play",
+	[0xf5] = "Slow",
+	[0xf6] = "Reserved",
+	[0xf7] = "Reserved",
+	[0xf8] = "Reserved",
+	[0xf9] = "Reserved",
+	[0xfa] = "Reserved",
+	[0xfb] = "Reserved",
+	[0xfc] = "Reserved",
+	[0xfd] = "Reserved",
+	[0xfe] = "Reserved",
+	[0xff] = "Reserved",
+	[0x100] = "Fan Enable",
+	[0x101] = "Fan Speed",
+	[0x102] = "Light Enable",
+	[0x103] = "Light Illumination Level",
+	[0x104] = "Climate Control Enable",
+	[0x105] = "Room Temperature",
+	[0x106] = "Security Enable",
+	[0x107] = "Fire Alarm",
+	[0x108] = "Police Alarm",
+	[0x109] = "Proximity",
+	[0x10a] = "Motion",
+	[0x10b] = "Duress Alarm",
+	[0x10c] = "Holdup Alarm",
+	[0x10d] = "Medical Alarm",
+	[0x10e] = "Reserved",
+	[0x10f] = "Reserved",
+	[0x110] = "Reserved",
+	[0x111] = "Reserved",
+	[0x112] = "Reserved",
+	[0x113] = "Reserved",
+	[0x114] = "Reserved",
+	[0x115] = "Reserved",
+	[0x116] = "Reserved",
+	[0x117] = "Reserved",
+	[0x118] = "Reserved",
+	[0x119] = "Reserved",
+	[0x11a] = "Reserved",
+	[0x11b] = "Reserved",
+	[0x11c] = "Reserved",
+	[0x11d] = "Reserved",
+	[0x11e] = "Reserved",
+	[0x11f] = "Reserved",
+	[0x120] = "Reserved", 
+	[0x121] = "Reserved",
+	[0x122] = "Reserved",
+	[0x123] = "Reserved",
+	[0x124] = "Reserved",
+	[0x125] = "Reserved",
+	[0x126] = "Reserved",
+	[0x127] = "Reserved",
+	[0x128] = "Reserved",
+	[0x129] = "Reserved",
+	[0x12a] = "Reserved",
+	[0x12b] = "Reserved",
+	[0x12c] = "Reserved",
+	[0x12d] = "Reserved",
+	[0x12e] = "Reserved",
+	[0x12f] = "Reserved",
+	[0x130] = "Reserved", 
+	[0x131] = "Reserved",
+	[0x132] = "Reserved",
+	[0x133] = "Reserved",
+	[0x134] = "Reserved",
+	[0x135] = "Reserved",
+	[0x136] = "Reserved",
+	[0x137] = "Reserved",
+	[0x138] = "Reserved",
+	[0x139] = "Reserved",
+	[0x13a] = "Reserved",
+	[0x13b] = "Reserved",
+	[0x13c] = "Reserved",
+	[0x13d] = "Reserved",
+	[0x13e] = "Reserved",
+	[0x13f] = "Reserved",
+	[0x140] = "Reserved", 
+	[0x141] = "Reserved",
+	[0x142] = "Reserved",
+	[0x143] = "Reserved",
+	[0x144] = "Reserved",
+	[0x145] = "Reserved",
+	[0x146] = "Reserved",
+	[0x147] = "Reserved",
+	[0x148] = "Reserved",
+	[0x149] = "Reserved",
+	[0x14a] = "Reserved",
+	[0x14b] = "Reserved",
+	[0x14c] = "Reserved",
+	[0x14d] = "Reserved",
+	[0x14e] = "Reserved",
+	[0x14f] = "Reserved",
+	[0x150] = "Balance Right",
+	[0x151] = "Balance Left",
+	[0x152] = "Bass Increment",
+	[0x153] = "Bass Decrement",
+	[0x154] = "Treble Increment",
+	[0x155] = "Treble Decrement",
+	[0x156] = "Reserved",
+	[0x157] = "Reserved",
+	[0x158] = "Reserved",
+	[0x159] = "Reserved",
+	[0x15a] = "Reserved",
+	[0x15b] = "Reserved",
+	[0x15c] = "Reserved",
+	[0x15d] = "Reserved",
+	[0x15e] = "Reserved",
+	[0x15f] = "Reserved",
+	[0x160] = "Speaker System",
+	[0x161] = "Channel Left",
+	[0x162] = "Channel Right",
+	[0x163] = "Channel Center",
+	[0x164] = "Channel Front",
+	[0x165] = "Channel Center Front",
+	[0x166] = "Channel Side",
+	[0x167] = "Channel Surround",
+	[0x168] = "Channel Low Frequency Enhancement",
+	[0x169] = "Channel Top",
+	[0x16a] = "Channel Unknown",
+	[0x16b] = "Reserved",
+	[0x16c] = "Reserved",
+	[0x16d] = "Reserved",
+	[0x16e] = "Reserved",
+	[0x16f] = "Reserved",
+	[0x170] = "Sub-channel",
+	[0x171] = "Sub-channel Increment",
+	[0x172] = "Sub-channel Decrement",
+	[0x173] = "Alternate Audio Increment",
+	[0x174] = "Alternate Audio Decrement",
+	[0x175] = "Reserved",
+	[0x176] = "Reserved",
+	[0x177] = "Reserved",
+	[0x178] = "Reserved",
+	[0x179] = "Reserved",
+	[0x17a] = "Reserved",
+	[0x17b] = "Reserved",
+	[0x17c] = "Reserved",
+	[0x17d] = "Reserved",
+	[0x17e] = "Reserved",
+	[0x17f] = "Reserved",
+	[0x180] = "Application Launch Buttons",
+	[0x181] = "AL Launch Buttion Configuration Tool",
+	[0x182] = "AL Programmable Button Configuration",
+	[0x183] = "AL Consumer Control Configuration",
+	[0x184] = "AL Word Processor",
+	[0x185] = "AL Text Editor",
+	[0x186] = "AL Spreadsheet",
+	[0x187] = "AL Graphics Editor",
+	[0x188] = "AL Presentation App",
+	[0x189] = "AL Database App",
+	[0x18a] = "AL Email Reader",
+	[0x18b] = "AL Newsreader",
+	[0x18c] = "AL Voicemail",
+	[0x18d] = "AL Contacts/Address Book",
+	[0x18e] = "AL Calendar/Schedule",
+	[0x18f] = "AL Task/Project Manager",
+	[0x190] = "AL Log/Journal/Timecard",
+	[0x191] = "AL Checkbook/Finance",
+	[0x192] = "AL Calculator",
+	[0x193] = "AL A/V Capture/Playback",
+	[0x194] = "AL Local Machine Browser",
+	[0x195] = "AL LAN/WAN Browser",
+	[0x196] = "AL Internet Browser",
+	[0x197] = "AL Remote Networking/ISP Connect",
+	[0x198] = "AL Network Conference",
+	[0x199] = "AL Network Chat",
+	[0x19a] = "AL Telephony/Dialer",
+	[0x19b] = "AL Logon",
+	[0x19c] = "AL Logoff",
+	[0x19d] = "AL Logon/Logoff",
+	[0x19e] = "AL Terminal Lock/Screensaver",
+	[0x19f] = "AL Control Panel",
+	[0x1a0] = "AL Command Line Processor/Run",
+	[0x1a1] = "AL Process/Task Manager",
+	[0x1a2] = "AL Select Task/Application",
+	[0x1a3] = "AL Next Task/Application",
+	[0x1a4] = "AL Previous Task/Application",
+	[0x1a5] = "AL Preemptive Halt Task/Application",
+	[0x1a6] = "AL Integrated Help Center",
+	[0x1a7] = "AL Documents",
+	[0x1a8] = "AL Thesaurus",
+	[0x1a9] = "AL Dictionary",
+	[0x1aa] = "AL Desktop",
+	[0x1ab] = "AL Spell Check",
+	[0x1ac] = "AL Grammar Check",
+	[0x1ad] = "AL Wireless Status",
+	[0x1ae] = "AL Keyboard Layout",
+	[0x1af] = "AL Virus Protection",
+	[0x1b0] = "AL Encryption",
+	[0x1b1] = "AL Screen Saver",
+	[0x1b2] = "AL Alarms",
+	[0x1b3] = "AL Clock",
+	[0x1b4] = "AL File Browser",
+	[0x1b5] = "AL Power Status",
+	[0x1b6] = "AL Image Browser",
+	[0x1b7] = "AL Audio Browser",
+	[0x1b8] = "AL Movie Browser",
+	[0x1b9] = "AL Digital Rights Manager",
+	[0x1ba] = "AL Digital Wallet",
+	[0x1bb] = "Reserved",
+	[0x1bc] = "AL Instant Messaging",
+	[0x1bd] = "AL OEM Features Tips/Tutorial Browser",
+	[0x1be] = "AL OEM Help",
+	[0x1bf] = "AL Online Community",
+	[0x1c0] = "AL Entertainment Content Browser",
+	[0x1c1] = "AL Online Shopping Browser",
+	[0x1c2] = "AL SmartCard Information/Help",
+	[0x1c3] = "AL Market Monitor/Finance Browser",
+	[0x1c4] = "AL Customized Corporate News Browser",
+	[0x1c5] = "AL Online Activity Browser",
+	[0x1c6] = "AL Research/Search Browser",
+	[0x1c7] = "AL Audio Player",
+	[0x1c8] = "Reserved",
+	[0x1c9] = "Reserved",
+	[0x1ca] = "Reserved",
+	[0x1cb] = "Reserved",
+	[0x1cc] = "Reserved",
+	[0x1cd] = "Reserved",
+	[0x1ce] = "Reserved",
+	[0x1cf] = "Reserved",
+	[0x1d0] = "Reserved",
+	[0x1d1] = "Reserved",
+	[0x1d2] = "Reserved",
+	[0x1d3] = "Reserved",
+	[0x1d4] = "Reserved",
+	[0x1d5] = "Reserved",
+	[0x1d6] = "Reserved",
+	[0x1d7] = "Reserved",
+	[0x1d8] = "Reserved",
+	[0x1d9] = "Reserved",
+	[0x1da] = "Reserved",
+	[0x1db] = "Reserved",
+	[0x1dc] = "Reserved",
+	[0x1dd] = "Reserved",
+	[0x1de] = "Reserved",
+	[0x1df] = "Reserved",
+	[0x1e0] = "Reserved",
+	[0x1e1] = "Reserved",
+	[0x1e2] = "Reserved",
+	[0x1e3] = "Reserved",
+	[0x1e4] = "Reserved",
+	[0x1e5] = "Reserved",
+	[0x1e6] = "Reserved",
+	[0x1e7] = "Reserved",
+	[0x1e8] = "Reserved",
+	[0x1e9] = "Reserved",
+	[0x1ea] = "Reserved",
+	[0x1eb] = "Reserved",
+	[0x1ec] = "Reserved",
+	[0x1ed] = "Reserved",
+	[0x1ee] = "Reserved",
+	[0x1ef] = "Reserved",
+	[0x1f0] = "Reserved",
+	[0x1f1] = "Reserved",
+	[0x1f2] = "Reserved",
+	[0x1f3] = "Reserved",
+	[0x1f4] = "Reserved",
+	[0x1f5] = "Reserved",
+	[0x1f6] = "Reserved",
+	[0x1f7] = "Reserved",
+	[0x1f8] = "Reserved",
+	[0x1f9] = "Reserved",
+	[0x1fa] = "Reserved",
+	[0x1fb] = "Reserved",
+	[0x1fc] = "Reserved",
+	[0x1fd] = "Reserved",
+	[0x1fe] = "Reserved",
+	[0x1ff] = "Reserved",
+	[0x200] = "Generic GUI Application Controls",
+	[0x201] = "AC New",
+	[0x202] = "AC Open",
+	[0x203] = "AC Close",
+	[0x204] = "AC Exit",
+	[0x205] = "AC Maximize",
+	[0x206] = "AC Minimize",
+	[0x207] = "AC Save",
+	[0x208] = "AC Print",
+	[0x209] = "AC Properties",
+	[0x20a] = "",
+	[0x20b] = "",
+	[0x20c] = "",
+	[0x20d] = "",
+	[0x20e] = "",
+	[0x20f] = "",
+	[0x210] = "",
+	[0x211] = "",
+	[0x212] = "",
+	[0x213] = "",
+	[0x214] = "",
+	[0x215] = "",
+	[0x216] = "",
+	[0x217] = "",
+	[0x218] = "",
+	[0x219] = "",
+	[0x21a] = "AC Undo",
+	[0x21b] = "AC Copy",
+	[0x21c] = "AC Cut",
+	[0x21d] = "AC Paste",
+	[0x21e] = "AC Select All",
+	[0x21f] = "AC Find",
+	[0x220] = "AC Find and Replace",
+	[0x221] = "AC Search",
+	[0x222] = "AC Go To",
+	[0x223] = "AC Home",
+	[0x224] = "AC Back",
+	[0x225] = "AC Forward",
+	[0x226] = "AC Stop",
+	[0x227] = "AC Refresh",
+	[0x228] = "AC Previous Link",
+	[0x229] = "AC Next Link",
+	[0x22a] = "AC Bookmarks",
+	[0x22b] = "AC History",
+	[0x22c] = "AC Subscriptions",
+	[0x22d] = "AC Zoom In",
+	[0x22e] = "AC Zoom Out",
+	[0x22f] = "AC Zoom",
+	[0x230] = "AC Full Screen View",
+	[0x231] = "AC Normal View",
+	[0x232] = "AC View Toggle",
+	[0x233] = "AC Scroll Up",
+	[0x234] = "AC Scroll Down",
+	[0x235] = "AC Scroll",
+	[0x236] = "AC Pan Left",
+	[0x237] = "AC Pan Right",
+	[0x238] = "AC Pan",
+	[0x239] = "AC New Window",
+	[0x23a] = "AC Tile Horizontally",
+	[0x23b] = "AC Tile Vertically",
+	[0x23c] = "AC Format",
+	[0x23d] = "AC Edit",
+	[0x23e] = "AC Bold",
+	[0x23f] = "AC Italics",
+	[0x240] = "AC Undeline",
+	[0x241] = "AC Strikethrough",
+	[0x242] = "AC Subscript",
+	[0x243] = "AC Superscript",
+	[0x244] = "AC All Caps",
+	[0x245] = "AC Rotate",
+	[0x246] = "AC Resize",
+	[0x247] = "AC Flip Horizontal",
+	[0x248] = "AC Flip Vertical",
+	[0x249] = "AC Mirror Horizontal",
+	[0x24a] = "AC Mirror Vertical",
+	[0x24b] = "AC Font Select",
+	[0x24c] = "AC Font Color",
+	[0x24d] = "AC Font Size",
+	[0x24e] = "AC Justify Left",
+	[0x24f] = "AC Justify Center H",
+	[0x250] = "AC Justify Right",
+	[0x251] = "AC Justify Block H",
+	[0x252] = "AC Justify Top",
+	[0x253] = "AC Justify Center V",
+	[0x254] = "AC Justify Bottom",
+	[0x255] = "AC Justify Block V",
+	[0x256] = "AC Indent Decrease",
+	[0x257] = "AC Indent Increase",
+	[0x258] = "AC Numbered List",
+	[0x259] = "AC Restart Numbering",
+	[0x25a] = "AC Bulleted List",
+	[0x25b] = "AC Promote",
+	[0x25c] = "AC Demote",
+	[0x25d] = "AC Yes",
+	[0x25e] = "AC No",
+	[0x25f] = "AC Cancel",
+	[0x260] = "AC Catalog",
+	[0x261] = "AC Buy/Checkout",
+	[0x262] = "AC Add to Cart",
+	[0x263] = "AC Expand",
+	[0x264] = "AC Expand All",
+	[0x265] = "AC Collapse",
+	[0x266] = "AC Collapse All",
+	[0x267] = "AC Print Preview",
+	[0x268] = "AC Paste Special",
+	[0x269] = "AC Insert Mode",
+	[0x26a] = "AC Delete",
+	[0x26b] = "AC Lock",
+	[0x26c] = "AC Unlock",
+	[0x26d] = "AC Protect",
+	[0x26e] = "AC Unprotect",
+	[0x26f] = "AC Attach Comment",
+	[0x270] = "AC Delete Comment",
+	[0x271] = "AC View Comment",
+	[0x272] = "AC Select Word",
+	[0x273] = "AC Select Sentence",
+	[0x274] = "AC Select Paragraph",
+	[0x275] = "AC Select Column",
+	[0x276] = "AC Select Row",
+	[0x277] = "AC Select Table",
+	[0x278] = "AC Select Object",
+	[0x279] = "AC Redo/Repeat",
+	[0x27a] = "AC Sort",
+	[0x27b] = "AC Sort Ascending",
+	[0x27c] = "AC Sort Descending",
+	[0x27d] = "AC Filter",
+	[0x27e] = "AC Set Clock",
+	[0x27f] = "AC View Clock",
+	[0x280] = "AC Select Time Zone",
+	[0x281] = "AC Edit Time Zones",
+	[0x282] = "AC Set Alarm",
+	[0x283] = "AC Clear Alarm",
+	[0x284] = "AC Snooze Alarm",
+	[0x285] = "AC Reset Alarm",
+	[0x286] = "AC Synchronize",
+	[0x287] = "AC Send/Receive",
+	[0x288] = "AC Send To",
+	[0x289] = "AC Reply",
+	[0x28a] = "AC Reply All",
+	[0x28b] = "AC Forward Msg",
+	[0x28c] = "AC Send",
+	[0x28d] = "AC Attach File",
+	[0x28e] = "AC Upload",
+	[0x28f] = "AC Download (Save Target As)",
+	[0x290] = "AC Set Borders",
+	[0x291] = "AC Insert Row",
+	[0x292] = "AC Insert Column",
+	[0x293] = "AC Insert File",
+	[0x294] = "AC Insert Picture",
+	[0x295] = "AC Insert Object",
+	[0x296] = "AC Insert Symbol",
+	[0x297] = "AC Save and Close",
+	[0x298] = "AC Rename",
+	[0x299] = "AC Merge",
+	[0x29a] = "AC Split",
+	[0x29b] = "AC Distrubute Horizontally",
+	[0x29c] = "AC Distrubute Vertically"
+};
+
+/**
+ * Translates USB HID Usages from the Consumer Page into their string 
+ * representation.
+ *
+ * @param usage USB HID Consumer Page Usage number.
+ * 
+ * @retval HelenOS key code corresponding to the given USB Consumer Page Usage.
+ */
+const char *usbhid_multimedia_usage_to_str(int usage)
+{
+	size_t map_length = sizeof(usbhid_consumer_usage_str) / sizeof(char *);
+
+	if ((usage < 0) || ((size_t)usage >= map_length))
+		return "Unknown usage";
+
+	/*! @todo What if the usage is not in the table? */
+	return usbhid_consumer_usage_str[usage];
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/src/hiddescriptor.c
===================================================================
--- uspace/lib/usbhid/src/hiddescriptor.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/src/hiddescriptor.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,1068 @@
+/*
+ * Copyright (c) 2011 Matej Klonfar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * HID report descriptor and report data parser implementation.
+ */
+#include <usb/hid/hidparser.h>
+#include <errno.h>
+#include <stdio.h>
+#include <malloc.h>
+#include <mem.h>
+#include <usb/debug.h>
+#include <assert.h>
+
+/*---------------------------------------------------------------------------*/
+/*
+ * Constants defining current parsing mode for correct parsing of the set of
+ * local tags (usage) enclosed in delimter tags.
+ */
+/**
+ * Second delimiter tag was read. The set of local items (usage) ended.
+ */
+#define OUTSIDE_DELIMITER_SET	0
+
+/**
+ * First delimiter tag was read. The set of local items (usage) started.
+ */
+#define START_DELIMITER_SET	1
+
+/**
+ * Parser is in the set of local items.
+ */
+#define INSIDE_DELIMITER_SET	2
+
+/*---------------------------------------------------------------------------*/
+	
+/** The new report item flag. Used to determine when the item is completly
+ * configured and should be added to the report structure
+ */
+#define USB_HID_NEW_REPORT_ITEM 1
+
+/** No special action after the report descriptor tag is processed should be
+ * done
+ */
+#define USB_HID_NO_ACTION	2
+
+#define USB_HID_RESET_OFFSET	3
+
+/** Unknown tag was founded in report descriptor data*/
+#define USB_HID_UNKNOWN_TAG		-99
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Checks if given collection path is already present in report structure and
+ * inserts it if not.
+ *
+ * @param report Report structure 
+ * @param cmp_path The collection path 
+ * @return Pointer to the result collection path in report structure.
+ * @retval NULL If some error occurs
+ */
+usb_hid_report_path_t *usb_hid_report_path_try_insert(
+		usb_hid_report_t *report, usb_hid_report_path_t *cmp_path) {
+	
+	link_t *path_it = report->collection_paths.prev->next;
+	usb_hid_report_path_t *path = NULL;
+	
+	if((report == NULL) || (cmp_path == NULL)) {
+		return NULL;
+	}
+	
+	while(path_it != &report->collection_paths) {
+		path = list_get_instance(path_it, usb_hid_report_path_t,
+				link);
+		
+		if(usb_hid_report_compare_usage_path(path, cmp_path,
+					USB_HID_PATH_COMPARE_STRICT) == EOK){
+			break;
+		}			
+		path_it = path_it->next;
+	}
+	if(path_it == &report->collection_paths) {
+		path = usb_hid_report_path_clone(cmp_path);
+		if(path == NULL) {
+			return NULL;
+		}
+		list_append(&path->link, &report->collection_paths);					
+		report->collection_paths_count++;
+
+		return path;
+	}
+	else {
+		return list_get_instance(path_it, usb_hid_report_path_t,
+				link); 
+	}
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Initialize the report descriptor parser structure
+ *
+ * @param parser Report descriptor parser structure
+ * @return Error code
+ * @retval EINVAL If no report structure was given
+ * @retval EOK If report structure was successfully initialized
+ */
+int usb_hid_report_init(usb_hid_report_t *report)
+{
+	if(report == NULL) {
+		return EINVAL;
+	}
+
+	memset(report, 0, sizeof(usb_hid_report_t));
+	list_initialize(&report->reports);
+	list_initialize(&report->collection_paths);
+
+	report->use_report_ids = 0;
+    return EOK;   
+}
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ *
+ *
+ * @param report Report structure in which the new report items should be
+ * 		 stored
+ * @param report_item Current report descriptor's parsing state table 
+ * @return Error code
+ * @retval EOK If all fields were successfully append to report
+ * @retval EINVAL If invalid parameters (NULL) was given
+ * @retval ENOMEM If there is no memmory to store new report description
+ *
+ */
+int usb_hid_report_append_fields(usb_hid_report_t *report,
+		usb_hid_report_item_t *report_item) {
+
+	usb_hid_report_field_t *field;
+	int i;
+
+	uint32_t *usages;
+	int usages_used=0;
+
+	if((report == NULL) || (report_item == NULL)) {
+		return EINVAL;
+	}
+
+	if(report_item->usages_count > 0){
+		usages = malloc(sizeof(int32_t) * report_item->usages_count);
+		memcpy(usages, report_item->usages, sizeof(int32_t) *
+				report_item->usages_count); 
+	}
+	else {
+		usages = NULL;
+	}
+	
+	usb_hid_report_path_t *path = report_item->usage_path;	
+	for(i=0; i<report_item->count; i++){
+
+		field = malloc(sizeof(usb_hid_report_field_t));
+		if(field == NULL) {
+			return ENOMEM;
+		}
+
+		memset(field, 0, sizeof(usb_hid_report_field_t));
+		list_initialize(&field->link);
+
+		/* fill the attributes */		
+		field->logical_minimum = report_item->logical_minimum;
+		field->logical_maximum = report_item->logical_maximum;
+		field->physical_minimum = report_item->physical_minimum;
+		field->physical_maximum = report_item->physical_maximum;
+
+		if(USB_HID_ITEM_FLAG_VARIABLE(report_item->item_flags) == 0){
+			/* 
+			Store usage array. The Correct Usage Page and Usage is
+			depending on data in report and will be filled later
+			*/
+			field->usage = 0;
+			field->usage_page = 0; //report_item->usage_page;
+
+			field->usages_count = report_item->usages_count;
+			field->usages = usages;
+			usages_used = 1;
+		}
+		else {
+
+			/* Fill the correct Usage and Usage Page */
+			int32_t usage;
+			if(i < report_item->usages_count) {
+				usage = report_item->usages[i];
+			}
+			else {
+				usage = report_item->usages[
+					report_item->usages_count- 1]; 
+			}
+
+			if(USB_HID_IS_EXTENDED_USAGE(usage)){
+				field->usage = USB_HID_EXTENDED_USAGE(usage);
+				field->usage_page = 
+					USB_HID_EXTENDED_USAGE_PAGE(usage);
+			}
+			else {
+				// should not occur
+				field->usage = usage;
+				field->usage_page = report_item->usage_page;
+			}
+		}
+		
+		usb_hid_report_set_last_item(path, USB_HID_TAG_CLASS_GLOBAL,
+				field->usage_page);
+		usb_hid_report_set_last_item(path, USB_HID_TAG_CLASS_LOCAL,
+				field->usage);
+
+		field->collection_path =
+			usb_hid_report_path_try_insert(report, path);
+
+		field->size = report_item->size;
+
+		if(report_item->type == USB_HID_REPORT_TYPE_INPUT) {
+			int offset = report_item->offset + report_item->size * i;
+			int field_offset = (offset/8)*8 + (offset/8 + 1) * 8 - 
+				offset - report_item->size;
+			if(field_offset < 0) {
+				field->offset = 0;
+			}
+			else {
+				field->offset = field_offset;
+			}
+		}
+		else {
+			field->offset = report_item->offset + (i * report_item->size);
+		}
+
+
+		if(report->use_report_ids != 0) {
+			field->offset += 8;
+			report->use_report_ids = 1;
+		}
+
+		field->item_flags = report_item->item_flags;
+
+		/* find the right report list*/
+		usb_hid_report_description_t *report_des;
+		report_des = usb_hid_report_find_description(report,
+			report_item->id, report_item->type);
+		
+		if(report_des == NULL){
+			report_des = malloc(
+				sizeof(usb_hid_report_description_t));
+			if(report_des == NULL) {
+				return ENOMEM;
+			}
+
+			memset(report_des, 0,
+				sizeof(usb_hid_report_description_t));
+
+			report_des->type = report_item->type;
+			report_des->report_id = report_item->id;
+			if(report_des->report_id != 0) {
+				/* set up the bit length by report_id field */
+				report_des->bit_length = 8;
+			}
+
+			list_initialize (&report_des->link);
+			list_initialize (&report_des->report_items);
+
+			list_append(&report_des->link, &report->reports);
+			report->report_count++;
+		}
+
+		/* append this field to the end of founded report list */
+		list_append (&field->link, &report_des->report_items);
+		
+		/* update the sizes */
+		report_des->bit_length += field->size;
+		report_des->item_length++;
+
+	}
+
+	// free only when not used!!!
+	if(usages && usages_used == 0) {
+		free(usages);
+	}
+
+	return EOK;
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * Finds description of report with given report_id and of given type in
+ * opaque report structure.
+ *
+ * @param report Opaque structure containing the parsed report descriptor
+ * @param report_id ReportId of report we are searching
+ * @param type Type of report we are searching
+ * @return Pointer to the particular report description
+ * @retval NULL If no description is founded
+ */
+usb_hid_report_description_t * usb_hid_report_find_description(
+		const usb_hid_report_t *report, uint8_t report_id,
+		usb_hid_report_type_t type) {
+
+	if(report == NULL) {
+		return NULL;
+	}
+
+	link_t *report_it = report->reports.next;
+	usb_hid_report_description_t *report_des = NULL;
+	
+	while(report_it != &report->reports) {
+		report_des = list_get_instance(report_it,
+				usb_hid_report_description_t, link);
+
+		// if report id not set, return the first of the type
+		if(((report_des->report_id == report_id) || (report_id == 0)) && 
+		   (report_des->type == type)) { 
+			return report_des;
+		}
+		
+		report_it = report_it->next;
+	}
+
+	return NULL;
+}
+/*---------------------------------------------------------------------------*/
+
+/** Parse HID report descriptor.
+ *
+ * @param parser Opaque HID report parser structure.
+ * @param data Data describing the report.
+ * @return Error code.
+ * @retval ENOMEM If no more memmory is available
+ * @retval EINVAL If invalid data are founded
+ * @retval EOK If report descriptor is successfully parsed
+ */
+int usb_hid_parse_report_descriptor(usb_hid_report_t *report, 
+    const uint8_t *data, size_t size)
+{
+	size_t i=0;
+	uint8_t tag=0;
+	uint8_t item_size=0;
+	int class=0;
+	int ret;
+	usb_hid_report_item_t *report_item=0;
+	usb_hid_report_item_t *new_report_item;	
+	usb_hid_report_path_t *usage_path;
+
+	size_t offset_input=0;
+	size_t offset_output=0;
+	size_t offset_feature=0;
+
+	link_t stack;
+	list_initialize(&stack);	
+
+	/* parser structure initialization*/
+	if(usb_hid_report_init(report) != EOK) {
+		return EINVAL;
+	}
+	
+	/*report item initialization*/
+	if(!(report_item=malloc(sizeof(usb_hid_report_item_t)))){
+		return ENOMEM;
+	}
+	memset(report_item, 0, sizeof(usb_hid_report_item_t));
+	list_initialize(&(report_item->link));	
+
+	/* usage path context initialization */
+	if(!(usage_path=usb_hid_report_path())){
+		return ENOMEM;
+	}
+	usb_hid_report_path_append_item(usage_path, 0, 0);	
+	
+	while(i<size){	
+		if(!USB_HID_ITEM_IS_LONG(data[i])){
+
+			if((i+USB_HID_ITEM_SIZE(data[i]))>= size){
+				return EINVAL;
+			}
+			
+			tag = USB_HID_ITEM_TAG(data[i]);
+			item_size = USB_HID_ITEM_SIZE(data[i]);
+			class = USB_HID_ITEM_TAG_CLASS(data[i]);
+			
+			ret = usb_hid_report_parse_tag(tag,class,data+i+1,
+				item_size,report_item, usage_path);
+
+			switch(ret){
+			case USB_HID_NEW_REPORT_ITEM:
+				/* store report item to report and create the
+				 * new one store current collection path
+				 */
+				report_item->usage_path = usage_path;
+					
+				usb_hid_report_path_set_report_id(
+				     report_item->usage_path, report_item->id);
+				
+				if(report_item->id != 0){
+					report->use_report_ids = 1;
+				}
+					
+				switch(tag) {
+				case USB_HID_REPORT_TAG_INPUT:
+					report_item->type = 
+					    USB_HID_REPORT_TYPE_INPUT;
+
+					report_item->offset = offset_input;
+					offset_input += report_item->count * 
+					    report_item->size;
+					break;
+	
+				case USB_HID_REPORT_TAG_OUTPUT:
+					report_item->type = 
+					    USB_HID_REPORT_TYPE_OUTPUT;
+					
+					report_item->offset = offset_output;
+					offset_output += report_item->count * 
+					    report_item->size;
+					break;
+	
+				case USB_HID_REPORT_TAG_FEATURE:
+					report_item->type = 
+					    USB_HID_REPORT_TYPE_FEATURE;
+
+					report_item->offset = offset_feature;
+					offset_feature += report_item->count * 
+						report_item->size;
+					break;
+	
+				default:
+					usb_log_debug2(
+					    "\tjump over - tag %X\n", tag);
+				    	break;
+				}
+					
+				/* 
+				 * append new fields to the report structure 					 
+				 */
+				usb_hid_report_append_fields(report, 
+				    report_item);
+
+				/* reset local items */
+				usb_hid_report_reset_local_items (report_item);
+				break;
+
+			case USB_HID_RESET_OFFSET:
+				offset_input = 0;
+				offset_output = 0;
+				offset_feature = 0;
+				usb_hid_report_path_set_report_id (usage_path, 
+				    report_item->id);
+				break;
+
+			case USB_HID_REPORT_TAG_PUSH:
+				// push current state to stack
+				new_report_item = usb_hid_report_item_clone(
+				    report_item);
+				
+				usb_hid_report_path_t *tmp_path = 
+				    usb_hid_report_path_clone(usage_path);
+
+				new_report_item->usage_path = tmp_path; 
+
+				list_prepend (&new_report_item->link, &stack);
+				break;
+			case USB_HID_REPORT_TAG_POP:
+				// restore current state from stack
+				if(list_empty (&stack)) {
+					return EINVAL;
+				}
+				free(report_item);
+						
+				report_item = list_get_instance(stack.next, 
+				    usb_hid_report_item_t, link);
+					
+				usb_hid_report_usage_path_t *tmp_usage_path;
+				tmp_usage_path = list_get_instance(
+				    report_item->usage_path->link.prev, 
+				    usb_hid_report_usage_path_t, link);
+					
+				usb_hid_report_set_last_item(usage_path, 
+				    USB_HID_TAG_CLASS_GLOBAL, tmp_usage_path->usage_page);
+				
+				usb_hid_report_set_last_item(usage_path, 
+				    USB_HID_TAG_CLASS_LOCAL, tmp_usage_path->usage);
+
+				usb_hid_report_path_free(report_item->usage_path);
+				list_initialize(&report_item->usage_path->link);
+				list_remove (stack.next);
+					
+				break;
+					
+			default:
+				// nothing special to do					
+				break;
+			}
+
+			/* jump over the processed block */
+			i += 1 + USB_HID_ITEM_SIZE(data[i]);
+		}
+		else{
+			// TBD
+			i += 3 + USB_HID_ITEM_SIZE(data[i+1]);
+		}
+		
+
+	}
+	
+	return EOK;
+}
+
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Parse one tag of the report descriptor
+ *
+ * @param Tag to parse
+ * @param Report descriptor buffer
+ * @param Size of data belongs to this tag
+ * @param Current report item structe
+ * @return Code of action to be done next
+ */
+int usb_hid_report_parse_tag(uint8_t tag, uint8_t class, const uint8_t *data,
+	size_t item_size, usb_hid_report_item_t *report_item,
+	usb_hid_report_path_t *usage_path) {	
+	
+	int ret;
+	
+	switch(class){
+	case USB_HID_TAG_CLASS_MAIN:
+
+		if((ret=usb_hid_report_parse_main_tag(tag, data, item_size,
+			report_item, usage_path)) == EOK) {
+
+			return USB_HID_NEW_REPORT_ITEM;
+		}
+		else {
+			return ret;
+		}
+		break;
+
+	case USB_HID_TAG_CLASS_GLOBAL:	
+		return usb_hid_report_parse_global_tag(tag, data, item_size,
+			report_item, usage_path);
+		break;
+
+	case USB_HID_TAG_CLASS_LOCAL:			
+		return usb_hid_report_parse_local_tag(tag, data, item_size,
+			report_item, usage_path);
+		break;
+	
+	default:
+		return USB_HID_NO_ACTION;
+	}
+}
+
+/**
+ * Parse main tags of report descriptor
+ *
+ * @param Tag identifier
+ * @param Data buffer
+ * @param Length of data buffer
+ * @param Current state table
+ * @return Error code
+ */
+
+int usb_hid_report_parse_main_tag(uint8_t tag, const uint8_t *data, 
+	size_t item_size, usb_hid_report_item_t *report_item,
+	usb_hid_report_path_t *usage_path)
+{
+	usb_hid_report_usage_path_t *path_item;
+	
+	switch(tag)
+	{
+	case USB_HID_REPORT_TAG_INPUT:
+	case USB_HID_REPORT_TAG_OUTPUT:
+	case USB_HID_REPORT_TAG_FEATURE:
+		report_item->item_flags = *data;			
+		return EOK;			
+		break;
+			
+	case USB_HID_REPORT_TAG_COLLECTION:
+
+		/* store collection atributes */
+		path_item = list_get_instance(usage_path->head.prev, 
+			usb_hid_report_usage_path_t, link);
+		path_item->flags = *data;	
+			
+		/* set last item */
+		usb_hid_report_set_last_item(usage_path, 
+			USB_HID_TAG_CLASS_GLOBAL, 
+			USB_HID_EXTENDED_USAGE_PAGE(report_item->usages[
+				report_item->usages_count-1]));
+
+		usb_hid_report_set_last_item(usage_path, 
+			USB_HID_TAG_CLASS_LOCAL, 
+			USB_HID_EXTENDED_USAGE(report_item->usages[
+				report_item->usages_count-1]));
+			
+		/* append the new one which will be set by common usage/usage
+		 * page */
+		usb_hid_report_path_append_item(usage_path, 
+			report_item->usage_page, 
+			report_item->usages[report_item->usages_count-1]);
+
+		usb_hid_report_reset_local_items (report_item);
+		return USB_HID_NO_ACTION;
+		break;
+			
+	case USB_HID_REPORT_TAG_END_COLLECTION:
+		usb_hid_report_remove_last_item(usage_path);
+		return USB_HID_NO_ACTION;
+		break;
+
+	default:
+		return USB_HID_NO_ACTION;
+	}
+
+	return EOK;
+}
+
+/**
+ * Parse global tags of report descriptor
+ *
+ * @param Tag identifier
+ * @param Data buffer
+ * @param Length of data buffer
+ * @param Current state table
+ * @return Error code
+ */
+int usb_hid_report_parse_global_tag(uint8_t tag, const uint8_t *data, 
+	size_t item_size, usb_hid_report_item_t *report_item, 
+	usb_hid_report_path_t *usage_path) { 
+	
+	switch(tag)
+	{
+	case USB_HID_REPORT_TAG_USAGE_PAGE:
+		report_item->usage_page = 
+			usb_hid_report_tag_data_uint32(data, item_size);
+		break;
+
+	case USB_HID_REPORT_TAG_LOGICAL_MINIMUM:
+		report_item->logical_minimum = USB_HID_UINT32_TO_INT32(
+			usb_hid_report_tag_data_uint32(data,item_size),
+		       	item_size * 8);
+		break;
+
+	case USB_HID_REPORT_TAG_LOGICAL_MAXIMUM:
+		report_item->logical_maximum = USB_HID_UINT32_TO_INT32(
+			usb_hid_report_tag_data_uint32(data,item_size), 
+			item_size * 8);
+		break;
+
+	case USB_HID_REPORT_TAG_PHYSICAL_MINIMUM:
+		report_item->physical_minimum = USB_HID_UINT32_TO_INT32(
+			usb_hid_report_tag_data_uint32(data,item_size), 
+			item_size * 8);
+		break;			
+
+	case USB_HID_REPORT_TAG_PHYSICAL_MAXIMUM:
+		report_item->physical_maximum = USB_HID_UINT32_TO_INT32(
+			usb_hid_report_tag_data_uint32(data,item_size), 
+			item_size * 8);
+		break;
+
+	case USB_HID_REPORT_TAG_UNIT_EXPONENT:
+		report_item->unit_exponent = usb_hid_report_tag_data_uint32(
+			data,item_size);
+		break;
+
+	case USB_HID_REPORT_TAG_UNIT:
+		report_item->unit = usb_hid_report_tag_data_uint32(
+			data,item_size);
+		break;
+
+	case USB_HID_REPORT_TAG_REPORT_SIZE:
+		report_item->size = usb_hid_report_tag_data_uint32(
+			data,item_size);
+		break;
+
+	case USB_HID_REPORT_TAG_REPORT_COUNT:
+		report_item->count = usb_hid_report_tag_data_uint32(
+			data,item_size);
+		break;
+
+	case USB_HID_REPORT_TAG_REPORT_ID:
+		report_item->id = usb_hid_report_tag_data_uint32(data, 
+			item_size);
+		return USB_HID_RESET_OFFSET;
+		break;
+	
+	case USB_HID_REPORT_TAG_PUSH:
+	case USB_HID_REPORT_TAG_POP:
+		/* 
+		 * stack operations are done in top level parsing
+		 * function
+		 */
+		return tag;
+		break;
+			
+	default:
+		return USB_HID_NO_ACTION;
+	}
+
+	return EOK;
+}
+
+/**
+ * Parse local tags of report descriptor
+ *
+ * @param Tag identifier
+ * @param Data buffer
+ * @param Length of data buffer
+ * @param Current state table
+ * @return Error code
+ */
+int usb_hid_report_parse_local_tag(uint8_t tag, const uint8_t *data, 
+	size_t item_size, usb_hid_report_item_t *report_item, 
+	usb_hid_report_path_t *usage_path)
+{
+	int32_t extended_usage;
+	
+	switch(tag) {
+	case USB_HID_REPORT_TAG_USAGE:
+		switch(report_item->in_delimiter) {
+		case INSIDE_DELIMITER_SET:
+			/* nothing to do
+			 * we catch only the first one
+			 */
+			break;
+	
+		case START_DELIMITER_SET:
+			report_item->in_delimiter = INSIDE_DELIMITER_SET;
+		case OUTSIDE_DELIMITER_SET:
+			extended_usage = ((report_item->usage_page) << 16);
+			extended_usage += usb_hid_report_tag_data_uint32(
+				data,item_size);
+
+			report_item->usages[report_item->usages_count] = 
+				extended_usage;
+
+			report_item->usages_count++;
+			break;
+		}
+		break;
+		
+	case USB_HID_REPORT_TAG_USAGE_MINIMUM:			
+		if (item_size == 3) {
+			// usage extended usages
+			report_item->extended_usage_page = 
+			    USB_HID_EXTENDED_USAGE_PAGE(
+			    usb_hid_report_tag_data_uint32(data,item_size));
+			   
+
+			report_item->usage_minimum = 
+			    USB_HID_EXTENDED_USAGE(
+			    usb_hid_report_tag_data_uint32(data,item_size));
+		}
+		else {
+			report_item->usage_minimum = 
+			    usb_hid_report_tag_data_uint32(data,item_size);
+		}
+		break;
+	
+	case USB_HID_REPORT_TAG_USAGE_MAXIMUM:
+		if (item_size == 3) {
+			if(report_item->extended_usage_page != 
+			    USB_HID_EXTENDED_USAGE_PAGE(	
+			    usb_hid_report_tag_data_uint32(data,item_size))) {
+				
+				return EINVAL;
+			}
+				
+			// usage extended usages
+			report_item->extended_usage_page = 
+				USB_HID_EXTENDED_USAGE_PAGE(
+				usb_hid_report_tag_data_uint32(data,item_size));
+
+			report_item->usage_maximum = 
+				USB_HID_EXTENDED_USAGE(
+				usb_hid_report_tag_data_uint32(data,item_size));
+		}
+		else {
+			report_item->usage_maximum = 
+				usb_hid_report_tag_data_uint32(data,item_size);
+		}
+
+		// vlozit zaznamy do pole usages
+		int32_t i;
+		for(i = report_item->usage_minimum; 
+		    i <= report_item->usage_maximum; i++) {
+
+			if(report_item->extended_usage_page) {
+			    report_item->usages[report_item->usages_count++] = 
+				(report_item->extended_usage_page << 16) + i;
+			}
+			else {			
+			    report_item->usages[report_item->usages_count++] = 
+				(report_item->usage_page << 16) + i;
+			}
+		}
+		report_item->extended_usage_page = 0;
+			
+		break;
+		
+	case USB_HID_REPORT_TAG_DESIGNATOR_INDEX:
+		report_item->designator_index = 
+			usb_hid_report_tag_data_uint32(data,item_size);
+		break;
+	
+	case USB_HID_REPORT_TAG_DESIGNATOR_MINIMUM:
+		report_item->designator_minimum = 
+			usb_hid_report_tag_data_uint32(data,item_size);
+		break;
+
+	case USB_HID_REPORT_TAG_DESIGNATOR_MAXIMUM:
+		report_item->designator_maximum = 
+			usb_hid_report_tag_data_uint32(data,item_size);
+		break;
+
+	case USB_HID_REPORT_TAG_STRING_INDEX:
+		report_item->string_index = 
+			usb_hid_report_tag_data_uint32(data,item_size);
+		break;
+
+	case USB_HID_REPORT_TAG_STRING_MINIMUM:
+		report_item->string_minimum = 
+			usb_hid_report_tag_data_uint32(data,item_size);
+		break;
+
+	case USB_HID_REPORT_TAG_STRING_MAXIMUM:
+		report_item->string_maximum = 
+			usb_hid_report_tag_data_uint32(data,item_size);
+		break;			
+
+	case USB_HID_REPORT_TAG_DELIMITER:
+		report_item->in_delimiter = 
+			usb_hid_report_tag_data_uint32(data,item_size);
+		break;
+
+	default:
+		return USB_HID_NO_ACTION;
+	}
+
+	return EOK;
+}
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Converts raw data to uint32 (thats the maximum length of short item data)
+ *
+ * @param Data buffer
+ * @param Size of buffer
+ * @return Converted int32 number
+ */
+uint32_t usb_hid_report_tag_data_uint32(const uint8_t *data, size_t size)
+{
+	unsigned int i;
+	uint32_t result;
+
+	result = 0;
+	for(i=0; i<size; i++) {
+		result = (result | (data[i]) << (i*8));
+	}
+
+	return result;
+}
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Prints content of given list of report items.
+ *
+ * @param List of report items (usb_hid_report_item_t)
+ * @return void
+ */
+void usb_hid_descriptor_print_list(link_t *head)
+{
+	usb_hid_report_field_t *report_item;
+	link_t *item;
+
+
+	if(head == NULL || list_empty(head)) {
+	    usb_log_debug("\tempty\n");
+	    return;
+	}
+        
+	for(item = head->next; item != head; item = item->next) {
+                
+		report_item = list_get_instance(item, usb_hid_report_field_t, 
+				link);
+
+		usb_log_debug("\t\tOFFSET: %X\n", report_item->offset);
+		usb_log_debug("\t\tSIZE: %zu\n", report_item->size);
+		usb_log_debug("\t\tLOGMIN: %d\n", 
+			report_item->logical_minimum);
+		usb_log_debug("\t\tLOGMAX: %d\n", 
+			report_item->logical_maximum);		
+		usb_log_debug("\t\tPHYMIN: %d\n", 
+			report_item->physical_minimum);		
+		usb_log_debug("\t\tPHYMAX: %d\n", 
+			report_item->physical_maximum);				
+		usb_log_debug("\t\ttUSAGEMIN: %X\n", 
+			report_item->usage_minimum);
+		usb_log_debug("\t\tUSAGEMAX: %X\n",
+			       report_item->usage_maximum);
+		usb_log_debug("\t\tUSAGES COUNT: %zu\n", 
+			report_item->usages_count);
+
+		usb_log_debug("\t\tVALUE: %X\n", report_item->value);
+		usb_log_debug("\t\ttUSAGE: %X\n", report_item->usage);
+		usb_log_debug("\t\tUSAGE PAGE: %X\n", report_item->usage_page);
+		
+		usb_hid_print_usage_path(report_item->collection_path);
+
+		usb_log_debug("\n");		
+
+	}
+
+}
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Prints content of given report descriptor in human readable format.
+ *
+ * @param parser Parsed descriptor to print
+ * @return void
+ */
+void usb_hid_descriptor_print(usb_hid_report_t *report)
+{
+	if(report == NULL) {
+		return;
+	}
+
+	link_t *report_it = report->reports.next;
+	usb_hid_report_description_t *report_des;
+
+	while(report_it != &report->reports) {
+		report_des = list_get_instance(report_it, 
+			usb_hid_report_description_t, link);
+		usb_log_debug("Report ID: %d\n", report_des->report_id);
+		usb_log_debug("\tType: %d\n", report_des->type);
+		usb_log_debug("\tLength: %zu\n", report_des->bit_length);		
+		usb_log_debug("\tB Size: %zu\n",
+			usb_hid_report_byte_size(report, 
+				report_des->report_id, 
+				report_des->type));
+		usb_log_debug("\tItems: %zu\n", report_des->item_length);		
+
+		usb_hid_descriptor_print_list(&report_des->report_items);
+
+		report_it = report_it->next;
+	}
+}
+/*---------------------------------------------------------------------------*/
+
+/**
+ * Releases whole linked list of report items
+ *
+ * @param head Head of list of report descriptor items (usb_hid_report_item_t)
+ * @return void
+ */
+void usb_hid_free_report_list(link_t *head)
+{
+	return; 
+	
+	usb_hid_report_item_t *report_item;
+	link_t *next;
+	
+	if(head == NULL || list_empty(head)) {		
+	    return;
+	}
+	
+	next = head->next;
+	while(next != head) {
+	
+	    report_item = list_get_instance(next, usb_hid_report_item_t, link);
+
+		while(!list_empty(&report_item->usage_path->link)) {
+		    usb_hid_report_remove_last_item(report_item->usage_path);
+		}
+
+		
+	    next = next->next;
+	    
+	    free(report_item);
+	}
+	
+	return;
+	
+}
+/*---------------------------------------------------------------------------*/
+
+/** Frees the HID report descriptor parser structure 
+ *
+ * @param parser Opaque HID report parser structure
+ * @return void
+ */
+void usb_hid_free_report(usb_hid_report_t *report)
+{
+	if(report == NULL){
+		return;
+	}
+
+	// free collection paths
+	usb_hid_report_path_t *path;
+	while(!list_empty(&report->collection_paths)) {
+		path = list_get_instance(report->collection_paths.next, 
+				usb_hid_report_path_t, link);
+
+		usb_hid_report_path_free(path);		
+	}
+	
+	// free report items
+	usb_hid_report_description_t *report_des;
+	usb_hid_report_field_t *field;
+	while(!list_empty(&report->reports)) {
+		report_des = list_get_instance(report->reports.next, 
+				usb_hid_report_description_t, link);
+
+		list_remove(&report_des->link);
+		
+		while(!list_empty(&report_des->report_items)) {
+			field = list_get_instance(
+				report_des->report_items.next, 
+				usb_hid_report_field_t, link);
+
+			list_remove(&field->link);
+
+			free(field);
+		}
+		
+		free(report_des);
+	}
+	
+	return;
+}
+/*---------------------------------------------------------------------------*/
+
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/src/hidiface.c
===================================================================
--- uspace/lib/usbhid/src/hidiface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/src/hidiface.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,229 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * Client functions for accessing USB HID interface (implementation).
+ */
+#include <dev_iface.h>
+#include <usbhid_iface.h>
+#include <usb/hid/iface.h>
+#include <errno.h>
+#include <str_error.h>
+#include <async.h>
+#include <assert.h>
+
+/** Ask for event array length.
+ *
+ * @param dev_phone Opened phone to DDF device providing USB HID interface.
+ * @return Number of usages returned or negative error code.
+ */
+int usbhid_dev_get_event_length(int dev_phone, size_t *size)
+{
+	if (dev_phone < 0) {
+		return EINVAL;
+	}
+
+	sysarg_t len;
+	int rc = async_req_1_1(dev_phone, DEV_IFACE_ID(USBHID_DEV_IFACE),
+	    IPC_M_USBHID_GET_EVENT_LENGTH, &len);
+	if (rc == EOK) {
+		if (size != NULL) {
+			*size = (size_t) len;
+		}
+	}
+	
+	return rc;
+}
+
+/** Request for next event from HID device.
+ *
+ * @param[in] dev_phone Opened phone to DDF device providing USB HID interface.
+ * @param[out] usage_pages Where to store usage pages.
+ * @param[out] usages Where to store usages (actual data).
+ * @param[in] usage_count Length of @p usage_pages and @p usages buffer
+ *	(in items, not bytes).
+ * @param[out] actual_usage_count Number of usages actually returned by the
+ *	device driver.
+ * @param[in] flags Flags (see USBHID_IFACE_FLAG_*).
+ * @return Error code.
+ */
+int usbhid_dev_get_event(int dev_phone, uint8_t *buf, 
+    size_t size, size_t *actual_size, int *event_nr, unsigned int flags)
+{
+	if (dev_phone < 0) {
+		return EINVAL;
+	}
+	if ((buf == NULL)) {
+		return ENOMEM;
+	}
+	if (size == 0) {
+		return EINVAL;
+	}
+	
+//	if (size == 0) {
+//		return EOK;
+//	}
+
+	size_t buffer_size =  size;
+	uint8_t *buffer = malloc(buffer_size);
+	if (buffer == NULL) {
+		return ENOMEM;
+	}
+
+	ipc_call_t opening_request_call;
+	aid_t opening_request = async_send_2(dev_phone,
+	    DEV_IFACE_ID(USBHID_DEV_IFACE), IPC_M_USBHID_GET_EVENT,
+	    flags, &opening_request_call);
+	if (opening_request == 0) {
+		free(buffer);
+		return ENOMEM;
+	}
+
+	ipc_call_t data_request_call;
+	aid_t data_request = async_data_read(dev_phone, buffer, buffer_size,
+	    &data_request_call);
+	if (data_request == 0) {
+		async_wait_for(opening_request, NULL);
+		free(buffer);
+		return ENOMEM;
+	}
+
+	sysarg_t data_request_rc;
+	sysarg_t opening_request_rc;
+	async_wait_for(data_request, &data_request_rc);
+	async_wait_for(opening_request, &opening_request_rc);
+
+	if (data_request_rc != EOK) {
+		/* Prefer return code of the opening request. */
+		if (opening_request_rc != EOK) {
+			return (int) opening_request_rc;
+		} else {
+			return (int) data_request_rc;
+		}
+	}
+
+	if (opening_request_rc != EOK) {
+		return (int) opening_request_rc;
+	}
+
+	size_t act_size = IPC_GET_ARG2(data_request_call);
+
+	/* Copy the individual items. */
+	memcpy(buf, buffer, act_size);
+//	memcpy(usages, buffer + items, items * sizeof(int32_t));
+
+	if (actual_size != NULL) {
+		*actual_size = act_size;
+	}
+	
+	if (event_nr != NULL) {
+		*event_nr = IPC_GET_ARG1(opening_request_call);
+	}
+
+	return EOK;
+}
+
+
+int usbhid_dev_get_report_descriptor_length(int dev_phone, size_t *size)
+{
+	if (dev_phone < 0) {
+		return EINVAL;
+	}
+
+	sysarg_t arg_size;
+	int rc = async_req_1_1(dev_phone, DEV_IFACE_ID(USBHID_DEV_IFACE),
+	    IPC_M_USBHID_GET_REPORT_DESCRIPTOR_LENGTH, &arg_size);
+	if (rc == EOK) {
+		if (size != NULL) {
+			*size = (size_t) arg_size;
+		}
+	}
+	return rc;
+}
+
+int usbhid_dev_get_report_descriptor(int dev_phone, uint8_t *buf, size_t size, 
+    size_t *actual_size)
+{
+	if (dev_phone < 0) {
+		return EINVAL;
+	}
+	if ((buf == NULL)) {
+		return ENOMEM;
+	}
+	if (size == 0) {
+		return EINVAL;
+	}
+
+	aid_t opening_request = async_send_1(dev_phone,
+	    DEV_IFACE_ID(USBHID_DEV_IFACE), IPC_M_USBHID_GET_REPORT_DESCRIPTOR,
+	    NULL);
+	if (opening_request == 0) {
+		return ENOMEM;
+	}
+
+	ipc_call_t data_request_call;
+	aid_t data_request = async_data_read(dev_phone, buf, size,
+	    &data_request_call);
+	if (data_request == 0) {
+		async_wait_for(opening_request, NULL);
+		return ENOMEM;
+	}
+
+	sysarg_t data_request_rc;
+	sysarg_t opening_request_rc;
+	async_wait_for(data_request, &data_request_rc);
+	async_wait_for(opening_request, &opening_request_rc);
+
+	if (data_request_rc != EOK) {
+		/* Prefer return code of the opening request. */
+		if (opening_request_rc != EOK) {
+			return (int) opening_request_rc;
+		} else {
+			return (int) data_request_rc;
+		}
+	}
+
+	if (opening_request_rc != EOK) {
+		return (int) opening_request_rc;
+	}
+
+	size_t act_size = IPC_GET_ARG2(data_request_call);
+
+	if (actual_size != NULL) {
+		*actual_size = act_size;
+	}
+
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/src/hidparser.c
===================================================================
--- uspace/lib/usbhid/src/hidparser.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/src/hidparser.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,666 @@
+/*
+ * Copyright (c) 2011 Matej Klonfar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * USB HID report data parser implementation.
+ */
+#include <usb/hid/hidparser.h>
+#include <errno.h>
+#include <stdio.h>
+#include <malloc.h>
+#include <mem.h>
+#include <usb/debug.h>
+#include <assert.h>
+
+/*---------------------------------------------------------------------------*/
+/*
+ * Data translation private functions
+ */
+uint32_t usb_hid_report_tag_data_uint32(const uint8_t *data, size_t size);
+
+int usb_hid_translate_data(usb_hid_report_field_t *item, const uint8_t *data);
+
+uint32_t usb_hid_translate_data_reverse(usb_hid_report_field_t *item, 
+	int32_t value);
+
+int usb_pow(int a, int b);
+
+/*---------------------------------------------------------------------------*/
+
+// TODO: tohle ma bejt asi jinde
+int usb_pow(int a, int b)
+{
+	switch(b) {
+	case 0:
+		return 1;
+		break;
+	case 1:
+		return a;
+		break;
+	default:
+		return a * usb_pow(a, b-1);
+		break;
+	}
+}
+/*---------------------------------------------------------------------------*/
+
+/** Returns size of report of specified report id and type in items
+ *
+ * @param parser Opaque report parser structure
+ * @param report_id 
+ * @param type
+ * @return Number of items in specified report
+ */
+size_t usb_hid_report_size(usb_hid_report_t *report, uint8_t report_id, 
+                           usb_hid_report_type_t type)
+{
+	usb_hid_report_description_t *report_des;
+
+	if(report == NULL) {
+		return 0;
+	}
+
+	report_des = usb_hid_report_find_description (report, report_id, type);
+	if(report_des == NULL){
+		return 0;
+	}
+	else {
+		return report_des->item_length;
+	}
+}
+
+/** Returns size of report of specified report id and type in bytes
+ *
+ * @param parser Opaque report parser structure
+ * @param report_id 
+ * @param type
+ * @return Number of items in specified report
+ */
+size_t usb_hid_report_byte_size(usb_hid_report_t *report, uint8_t report_id, 
+                           usb_hid_report_type_t type)
+{
+	usb_hid_report_description_t *report_des;
+
+	if(report == NULL) {
+		return 0;
+	}
+
+	report_des = usb_hid_report_find_description (report, report_id, type);
+	if(report_des == NULL){
+		return 0;
+	}
+	else {
+		return ((report_des->bit_length + 7) / 8) ;
+	}
+}
+/*---------------------------------------------------------------------------*/
+
+/** Parse and act upon a HID report.
+ *
+ * @see usb_hid_parse_report_descriptor
+ *
+ * @param parser Opaque HID report parser structure.
+ * @param data Data for the report.
+ * @return Error code.
+ */ 
+int usb_hid_parse_report(const usb_hid_report_t *report, const uint8_t *data, 
+	size_t size, uint8_t *report_id)
+{
+	link_t *list_item;
+	usb_hid_report_field_t *item;
+
+	usb_hid_report_description_t *report_des;
+	usb_hid_report_type_t type = USB_HID_REPORT_TYPE_INPUT;
+	
+	if(report == NULL) {
+		return EINVAL;
+	}
+
+	if(report->use_report_ids != 0) {
+		*report_id = data[0];
+	}	
+	else {
+		*report_id = 0;
+	}
+
+
+	report_des = usb_hid_report_find_description(report, *report_id, 
+		type);
+
+	if(report_des == NULL) {
+		return EINVAL;
+	}
+
+	/* read data */
+	list_item = report_des->report_items.next;	   
+	while(list_item != &(report_des->report_items)) {
+
+		item = list_get_instance(list_item, usb_hid_report_field_t, 
+				link);
+
+		if(USB_HID_ITEM_FLAG_CONSTANT(item->item_flags) == 0) {
+			
+			if(USB_HID_ITEM_FLAG_VARIABLE(item->item_flags) == 0){
+
+				// array
+				item->value = 
+					usb_hid_translate_data(item, data);
+		
+				item->usage = USB_HID_EXTENDED_USAGE(
+				    item->usages[
+				    item->value - item->physical_minimum]);
+
+				item->usage_page = 
+				    USB_HID_EXTENDED_USAGE_PAGE(
+				    item->usages[
+				    item->value - item->physical_minimum]);
+
+				usb_hid_report_set_last_item (
+				    item->collection_path, 
+				    USB_HID_TAG_CLASS_GLOBAL, 
+				    item->usage_page);
+
+				usb_hid_report_set_last_item (
+				    item->collection_path, 
+				    USB_HID_TAG_CLASS_LOCAL, item->usage);
+				
+			}
+			else {
+				// variable item
+				item->value = usb_hid_translate_data(item, 
+				    data);				
+			}			
+		}
+		list_item = list_item->next;
+	}
+	
+	return EOK;
+	
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Translate data from the report as specified in report descriptor item
+ *
+ * @param item Report descriptor item with definition of translation
+ * @param data Data to translate
+ * @return Translated data
+ */
+int usb_hid_translate_data(usb_hid_report_field_t *item, const uint8_t *data)
+{
+	int resolution;
+	int offset;
+	int part_size;
+	
+	int32_t value=0;
+	int32_t mask=0;
+	const uint8_t *foo=0;
+
+	// now only shot tags are allowed
+	if(item->size > 32) {
+		return 0;
+	}
+
+	if((item->physical_minimum == 0) && (item->physical_maximum == 0)){
+		item->physical_minimum = item->logical_minimum;
+		item->physical_maximum = item->logical_maximum;			
+	}
+	
+
+	if(item->physical_maximum == item->physical_minimum){
+	    resolution = 1;
+	}
+	else {
+	    resolution = (item->logical_maximum - item->logical_minimum) / 
+		((item->physical_maximum - item->physical_minimum) * 
+		(usb_pow(10,(item->unit_exponent))));
+	}
+
+	offset = item->offset;
+	// FIXME
+	if((size_t)(offset/8) != (size_t)((offset+item->size-1)/8)) {
+		
+		part_size = 0;
+
+		size_t i=0;
+		for(i=(size_t)(offset/8); i<=(size_t)(offset+item->size-1)/8; i++){
+			if(i == (size_t)(offset/8)) {
+				// the higher one
+				part_size = 8 - (offset % 8);
+				foo = data + i;
+				mask =  ((1 << (item->size-part_size))-1);
+				value = (*foo & mask);
+			}
+			else if(i == ((offset+item->size-1)/8)){
+				// the lower one
+				foo = data + i;
+				mask = ((1 << (item->size - part_size)) - 1) 
+					<< (8 - (item->size - part_size));
+
+				value = (((*foo & mask) >> (8 - 
+				    (item->size - part_size))) << part_size ) 
+				    + value;
+			}
+			else {
+				value = (*(data + 1) << (part_size + 8)) + value;
+				part_size += 8;
+			}
+		}
+	}
+	else {		
+		foo = data+(offset/8);
+		mask =  ((1 << item->size)-1) << (8-((offset%8)+item->size));
+		value = (*foo & mask) >> (8-((offset%8)+item->size));
+	}
+
+	if((item->logical_minimum < 0) || (item->logical_maximum < 0)){
+		value = USB_HID_UINT32_TO_INT32(value, item->size);
+	}
+
+	return (int)(((value - item->logical_minimum) / resolution) + 
+		item->physical_minimum);
+	
+}
+
+/*---------------------------------------------------------------------------*/
+/* OUTPUT API */
+
+/** 
+ * Allocates output report buffer for output report
+ *
+ * @param parser Report parsed structure
+ * @param size Size of returned buffer
+ * @param report_id Report id of created output report
+ * @return Returns allocated output buffer for specified output
+ */
+uint8_t *usb_hid_report_output(usb_hid_report_t *report, size_t *size, 
+	uint8_t report_id)
+{
+	if(report == NULL) {
+		*size = 0;
+		return NULL;
+	}
+
+	link_t *report_it = report->reports.next;
+	usb_hid_report_description_t *report_des = NULL;
+	while(report_it != &report->reports) {
+		report_des = list_get_instance(report_it, 
+			usb_hid_report_description_t, link);
+		
+		if((report_des->report_id == report_id) && 
+			(report_des->type == USB_HID_REPORT_TYPE_OUTPUT)){
+			break;
+		}
+
+		report_it = report_it->next;
+	}
+
+	if(report_des == NULL){
+		*size = 0;
+		return NULL;
+	}
+	else {
+		*size = (report_des->bit_length + (8 - 1))/8;
+		uint8_t *ret = malloc((*size) * sizeof(uint8_t));
+		memset(ret, 0, (*size) * sizeof(uint8_t));
+		return ret;
+	}
+}
+
+
+/** Frees output report buffer
+ *
+ * @param output Output report buffer
+ * @return void
+ */
+void usb_hid_report_output_free(uint8_t *output)
+
+{
+	if(output != NULL) {
+		free (output);
+	}
+}
+
+/** Makes the output report buffer for data given in the report structure
+ *
+ * @param parser Opaque report parser structure
+ * @param path Usage path specifing which parts of output will be set
+ * @param flags Usage path structure comparison flags
+ * @param buffer Output buffer
+ * @param size Size of output buffer
+ * @return Error code
+ */
+int usb_hid_report_output_translate(usb_hid_report_t *report, 
+	uint8_t report_id, uint8_t *buffer, size_t size)
+{
+	link_t *item;	
+	int32_t value=0;
+	int offset;
+	int length;
+	int32_t tmp_value;
+	
+	if(report == NULL) {
+		return EINVAL;
+	}
+
+	if(report->use_report_ids != 0) {
+		buffer[0] = report_id;		
+	}
+
+	usb_hid_report_description_t *report_des;
+	report_des = usb_hid_report_find_description (report, report_id, 
+		USB_HID_REPORT_TYPE_OUTPUT);
+	
+	if(report_des == NULL){
+		return EINVAL;
+	}
+
+	usb_hid_report_field_t *report_item;	
+	item = report_des->report_items.next;	
+	while(item != &report_des->report_items) {
+		report_item = list_get_instance(item, usb_hid_report_field_t, link);
+
+		value = usb_hid_translate_data_reverse(report_item, 
+			report_item->value);
+
+		offset = report_des->bit_length - report_item->offset - 1;
+		length = report_item->size;
+		
+		usb_log_debug("\ttranslated value: %x\n", value);
+
+		if((offset/8) == ((offset+length-1)/8)) {
+			// je to v jednom bytu
+			if(((size_t)(offset/8) >= size) || 
+				((size_t)(offset+length-1)/8) >= size) {
+				break; // TODO ErrorCode
+			}
+			size_t shift = 8 - offset%8 - length;
+			value = value << shift;							
+			value = value & (((1 << length)-1) << shift);
+				
+			uint8_t mask = 0;
+			mask = 0xff - (((1 << length) - 1) << shift);
+			buffer[offset/8] = (buffer[offset/8] & mask) | value;
+		}
+		else {
+			int i = 0;
+			uint8_t mask = 0;
+			for(i = (offset/8); i <= ((offset+length-1)/8); i++) {
+				if(i == (offset/8)) {
+					tmp_value = value;
+					tmp_value = tmp_value & 
+						((1 << (8-(offset%8)))-1);
+
+					tmp_value = tmp_value << (offset%8);
+	
+					mask = ~(((1 << (8-(offset%8)))-1) << 
+							(offset%8));
+
+					buffer[i] = (buffer[i] & mask) | 
+						tmp_value;
+				}
+				else if (i == ((offset + length -1)/8)) {
+					
+					value = value >> (length - 
+						((offset + length) % 8));
+
+					value = value & ((1 << (length - 
+						((offset + length) % 8))) - 1);
+				
+					mask = (1 << (length - 
+						((offset + length) % 8))) - 1;
+
+					buffer[i] = (buffer[i] & mask) | value;
+				}
+				else {
+					buffer[i] = value & (0xFF << i);
+				}
+			}
+		}
+
+		// reset value
+		report_item->value = 0;
+		
+		item = item->next;
+	}
+	
+	return EOK;
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Translate given data for putting them into the outoput report
+ * @param item Report item structure
+ * @param value Value to translate
+ * @return ranslated value
+ */
+uint32_t usb_hid_translate_data_reverse(usb_hid_report_field_t *item, 
+	int value)
+{
+	int ret=0;
+	int resolution;
+
+	if(USB_HID_ITEM_FLAG_CONSTANT(item->item_flags)) {
+		ret = item->logical_minimum;
+	}
+
+	if((item->physical_minimum == 0) && (item->physical_maximum == 0)){
+		item->physical_minimum = item->logical_minimum;
+		item->physical_maximum = item->logical_maximum;			
+	}
+	
+	// variable item
+	if(item->physical_maximum == item->physical_minimum){
+	    resolution = 1;
+	}
+	else {
+	    resolution = (item->logical_maximum - item->logical_minimum) /
+		((item->physical_maximum - item->physical_minimum) *
+		(usb_pow(10,(item->unit_exponent))));
+	}
+
+	ret = ((value - item->physical_minimum) * resolution) + 
+		item->logical_minimum;
+
+	usb_log_debug("\tvalue(%x), resolution(%x), phymin(%x) logmin(%x), \
+		ret(%x)\n", value, resolution, item->physical_minimum, 
+		item->logical_minimum, ret);
+	
+	if((item->logical_minimum < 0) || (item->logical_maximum < 0)){
+		return USB_HID_INT32_TO_UINT32(ret, item->size);
+	}
+	return (int32_t)0 + ret;
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Clones given state table
+ *
+ * @param item State table to clone
+ * @return Pointer to the cloned item
+ */
+usb_hid_report_item_t *usb_hid_report_item_clone(
+	const usb_hid_report_item_t *item)
+{
+	usb_hid_report_item_t *new_report_item;
+	
+	if(!(new_report_item = malloc(sizeof(usb_hid_report_item_t)))) {
+		return NULL;
+	}					
+	memcpy(new_report_item,item, sizeof(usb_hid_report_item_t));
+	link_initialize(&(new_report_item->link));
+
+	return new_report_item;
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Function for sequence walking through the report. Returns next field in the
+ * report or the first one when no field is given.
+ *
+ * @param report Searched report structure
+ * @param field Current field. If NULL is given, the first one in the report
+ * is returned. Otherwise the next one i nthe list is returned.
+ * @param path Usage path specifying which fields wa are interested in. 
+ * @param flags Flags defining mode of usage paths comparison
+ * @param type Type of report we search.
+ * @retval NULL if no field is founded
+ * @retval Pointer to the founded report structure when founded
+ */
+usb_hid_report_field_t *usb_hid_report_get_sibling(usb_hid_report_t *report, 
+	usb_hid_report_field_t *field, usb_hid_report_path_t *path, int flags, 
+	usb_hid_report_type_t type)
+{
+	usb_hid_report_description_t *report_des = 
+		usb_hid_report_find_description(report, path->report_id, type);
+
+	link_t *field_it;
+	
+	if(report_des == NULL){
+		return NULL;
+	}
+
+	if(field == NULL){
+		field_it = report_des->report_items.next;
+	}
+	else {
+		field_it = field->link.next;
+	}
+
+	while(field_it != &report_des->report_items) {
+		field = list_get_instance(field_it, usb_hid_report_field_t, 
+			link);
+
+		if(USB_HID_ITEM_FLAG_CONSTANT(field->item_flags) == 0) {
+			usb_hid_report_path_append_item (
+				field->collection_path, field->usage_page, 
+				field->usage);
+
+			if(usb_hid_report_compare_usage_path(
+				field->collection_path, path, flags) == EOK){
+
+				usb_hid_report_remove_last_item(
+					field->collection_path);
+
+				return field;
+			}
+			usb_hid_report_remove_last_item (
+				field->collection_path);
+		}
+		field_it = field_it->next;
+	}
+
+	return NULL;
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Returns next report_id of report of specified type. If zero is given than
+ * first report_id of specified type is returned (0 is not legal value for
+ * repotr_id)
+ *
+ * @param report_id Current report_id, 0 if there is no current report_id
+ * @param type Type of searched report
+ * @param report Report structure inwhich we search
+ * @retval 0 if report structure is null or there is no specified report
+ * @retval report_id otherwise
+ */
+uint8_t usb_hid_get_next_report_id(usb_hid_report_t *report, 
+	uint8_t report_id, usb_hid_report_type_t type)
+{
+	if(report == NULL){
+		return 0;
+	}
+
+	usb_hid_report_description_t *report_des;
+	link_t *report_it;
+	
+	if(report_id > 0) {
+		report_des = usb_hid_report_find_description(report, report_id, 
+			type);
+		if(report_des == NULL) {
+			return 0;
+		}
+		else {
+			report_it = report_des->link.next;
+		}	
+	}
+	else {
+		report_it = report->reports.next;
+	}
+
+	while(report_it != &report->reports) {
+		report_des = list_get_instance(report_it, 
+			usb_hid_report_description_t, link);
+
+		if(report_des->type == type){
+			return report_des->report_id;
+		}
+
+		report_it = report_it->next;
+	}
+
+	return 0;
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Reset all local items in given state table
+ *
+ * @param report_item State table containing current state of report
+ * descriptor parsing
+ *
+ * @return void
+ */
+void usb_hid_report_reset_local_items(usb_hid_report_item_t *report_item)
+{
+	if(report_item == NULL)	{
+		return;
+	}
+	
+	report_item->usages_count = 0;
+	memset(report_item->usages, 0, USB_HID_MAX_USAGES);
+	
+	report_item->extended_usage_page = 0;
+	report_item->usage_minimum = 0;
+	report_item->usage_maximum = 0;
+	report_item->designator_index = 0;
+	report_item->designator_minimum = 0;
+	report_item->designator_maximum = 0;
+	report_item->string_index = 0;
+	report_item->string_minimum = 0;
+	report_item->string_maximum = 0;
+
+	return;
+}
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/src/hidpath.c
===================================================================
--- uspace/lib/usbhid/src/hidpath.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/src/hidpath.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,468 @@
+/*
+ * Copyright (c) 2011 Matej Klonfar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/** @file
+ * HID report descriptor and report data parser implementation.
+ */
+#include <usb/hid/hidparser.h>
+#include <errno.h>
+#include <stdio.h>
+#include <malloc.h>
+#include <mem.h>
+#include <usb/debug.h>
+#include <assert.h>
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Compares two usages if they are same or not or one of the usages is not
+ * set.
+ *
+ * @param usage1
+ * @param usage2
+ * @return boolean
+ */
+#define USB_HID_SAME_USAGE(usage1, usage2)		\
+	((usage1 == usage2) || (usage1 == 0) || (usage2 == 0))
+
+/**
+ * Compares two usage pages if they are same or not or one of them is not set.
+ *
+ * @param page1
+ * @param page2
+ * @return boolean
+ */
+#define USB_HID_SAME_USAGE_PAGE(page1, page2)	\
+	((page1 == page2) || (page1 == 0) || (page2 == 0))
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Appends one item (couple of usage_path and usage) into the usage path
+ * structure
+ *
+ * @param usage_path Usage path structure
+ * @param usage_page Usage page constant
+ * @param usage Usage constant
+ * @return Error code
+ */
+int usb_hid_report_path_append_item(usb_hid_report_path_t *usage_path, 
+                                    int32_t usage_page, int32_t usage)
+{	
+	usb_hid_report_usage_path_t *item;
+
+	if(!(item=malloc(sizeof(usb_hid_report_usage_path_t)))) {
+		return ENOMEM;
+	}
+	list_initialize(&item->link);
+
+	item->usage = usage;
+	item->usage_page = usage_page;
+	item->flags = 0;
+	
+	list_append (&item->link, &usage_path->head);
+	usage_path->depth++;
+	return EOK;
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Removes last item from the usage path structure
+ * @param usage_path 
+ * @return void
+ */
+void usb_hid_report_remove_last_item(usb_hid_report_path_t *usage_path)
+{
+	usb_hid_report_usage_path_t *item;
+	
+	if(!list_empty(&usage_path->head)){
+		item = list_get_instance(usage_path->head.prev, 
+		                         usb_hid_report_usage_path_t, link);		
+		list_remove(usage_path->head.prev);
+		usage_path->depth--;
+		free(item);
+	}
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Nulls last item of the usage path structure.
+ *
+ * @param usage_path
+ * @return void
+ */
+void usb_hid_report_null_last_item(usb_hid_report_path_t *usage_path)
+{
+	usb_hid_report_usage_path_t *item;
+	
+	if(!list_empty(&usage_path->head)){	
+		item = list_get_instance(usage_path->head.prev, 
+			usb_hid_report_usage_path_t, link);
+
+		memset(item, 0, sizeof(usb_hid_report_usage_path_t));
+	}
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Modifies last item of usage path structure by given usage page or usage
+ *
+ * @param usage_path Opaque usage path structure
+ * @param tag Class of currently processed tag (Usage page tag falls into Global
+ * class but Usage tag into the Local)
+ * @param data Value of the processed tag
+ * @return void
+ */
+void usb_hid_report_set_last_item(usb_hid_report_path_t *usage_path, 
+                                  int32_t tag, int32_t data)
+{
+	usb_hid_report_usage_path_t *item;
+	
+	if(!list_empty(&usage_path->head)){	
+		item = list_get_instance(usage_path->head.prev, 
+		                         usb_hid_report_usage_path_t, link);
+
+		switch(tag) {
+			case USB_HID_TAG_CLASS_GLOBAL:
+				item->usage_page = data;
+				break;
+			case USB_HID_TAG_CLASS_LOCAL:
+				item->usage = data;
+				break;
+		}
+	}
+	
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ *
+ *
+ *
+ *
+ */
+void usb_hid_print_usage_path(usb_hid_report_path_t *path)
+{
+	usb_log_debug("USAGE_PATH FOR RId(%d):\n", path->report_id);
+	usb_log_debug("\tLENGTH: %d\n", path->depth);
+
+	link_t *item = path->head.next;
+	usb_hid_report_usage_path_t *path_item;
+	while(item != &path->head) {
+
+		path_item = list_get_instance(item, usb_hid_report_usage_path_t, 
+			link);
+
+		usb_log_debug("\tUSAGE_PAGE: %X\n", path_item->usage_page);
+		usb_log_debug("\tUSAGE: %X\n", path_item->usage);
+		usb_log_debug("\tFLAGS: %d\n", path_item->flags);		
+		
+       	item = item->next;
+	}
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Compares two usage paths structures
+ *
+ *
+ * @param report_path usage path structure to compare with @path 
+ * @param path usage patrh structure to compare
+ * @param flags Flags determining the mode of comparison
+ * @return EOK if both paths are identical, non zero number otherwise
+ */
+int usb_hid_report_compare_usage_path(usb_hid_report_path_t *report_path, 
+                                      usb_hid_report_path_t *path,
+                                      int flags)
+{
+	usb_hid_report_usage_path_t *report_item;
+	usb_hid_report_usage_path_t *path_item;
+
+	link_t *report_link;
+	link_t *path_link;
+
+	int only_page;
+
+	if(report_path->report_id != path->report_id) {
+		if(path->report_id != 0) {
+			return 1;
+		}
+	}
+
+	// Empty path match all others
+	if(path->depth == 0){
+		return EOK;
+	}
+
+
+	if((only_page = flags & USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY) != 0){
+		flags -= USB_HID_PATH_COMPARE_USAGE_PAGE_ONLY;
+	}
+	
+	switch(flags){
+	/* path is somewhere in report_path */
+	case USB_HID_PATH_COMPARE_ANYWHERE:
+		if(path->depth != 1){
+			return 1;
+		}
+
+		report_link = report_path->head.next;
+		path_link = path->head.next;
+		path_item = list_get_instance(path_link, 
+			usb_hid_report_usage_path_t, link);
+
+		while(report_link != &report_path->head) {
+			report_item = list_get_instance(report_link, 
+				usb_hid_report_usage_path_t, link);
+				
+			if(USB_HID_SAME_USAGE_PAGE(report_item->usage_page, 
+				path_item->usage_page)){
+					
+				if(only_page == 0){
+					if(USB_HID_SAME_USAGE(
+						report_item->usage,
+						path_item->usage)) {
+							
+						return EOK;
+					}
+				}
+				else {
+					return EOK;
+				}
+			}
+
+			report_link = report_link->next;
+		}
+
+		return 1;
+		break;
+
+	/* the paths must be identical */
+	case USB_HID_PATH_COMPARE_STRICT:
+		if(report_path->depth != path->depth){
+			return 1;
+		}
+		
+	/* path is prefix of the report_path */
+	case USB_HID_PATH_COMPARE_BEGIN:
+	
+		report_link = report_path->head.next;
+		path_link = path->head.next;
+			
+		while((report_link != &report_path->head) && 
+		      (path_link != &path->head)) {
+					  
+			report_item = list_get_instance(report_link, 
+				usb_hid_report_usage_path_t, link);
+					  
+			path_item = list_get_instance(path_link,
+       				usb_hid_report_usage_path_t, link);
+
+			if(!USB_HID_SAME_USAGE_PAGE(report_item->usage_page, 
+				path_item->usage_page) || ((only_page == 0) && 
+			    !USB_HID_SAME_USAGE(report_item->usage, 
+				path_item->usage))) {
+			
+				return 1;
+			} 
+			else {
+				report_link = report_link->next;
+				path_link = path_link->next;			
+			}
+			
+				}
+
+		if((((flags & USB_HID_PATH_COMPARE_BEGIN) != 0) && 
+			(path_link == &path->head)) || 
+		   ((report_link == &report_path->head) && 
+			(path_link == &path->head))) {
+				
+			return EOK;
+		}
+		else {
+			return 1;
+		}						
+		break;
+
+	/* path is suffix of report_path */
+	case USB_HID_PATH_COMPARE_END:
+
+		report_link = report_path->head.prev;
+		path_link = path->head.prev;
+
+		if(list_empty(&path->head)){
+			return EOK;
+		}
+			
+		while((report_link != &report_path->head) && 
+		      (path_link != &path->head)) {
+						  
+			report_item = list_get_instance(report_link, 
+				usb_hid_report_usage_path_t, link);
+
+			path_item = list_get_instance(path_link, 
+				usb_hid_report_usage_path_t, link);		
+						  
+			if(!USB_HID_SAME_USAGE_PAGE(report_item->usage_page, 
+				path_item->usage_page) || ((only_page == 0) && 
+			    !USB_HID_SAME_USAGE(report_item->usage, 
+				path_item->usage))) {
+						
+					return 1;
+			} else {
+				report_link = report_link->prev;
+				path_link = path_link->prev;			
+			}
+
+		}
+
+		if(path_link == &path->head) {
+			return EOK;
+		}
+		else {
+			return 1;
+		}						
+			
+		break;
+
+	default:
+		return EINVAL;
+	}
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Allocates and initializes new usage path structure.
+ *
+ * @return Initialized usage path structure
+ */
+usb_hid_report_path_t *usb_hid_report_path(void)
+{
+	usb_hid_report_path_t *path;
+	path = malloc(sizeof(usb_hid_report_path_t));
+	if(path == NULL){
+		return NULL;
+	}
+	else {
+		path->depth = 0;
+		path->report_id = 0;
+		list_initialize(&path->link);
+		list_initialize(&path->head);
+		return path;
+	}
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Releases given usage path structure.
+ *
+ * @param path usage path structure to release
+ * @return void
+ */
+void usb_hid_report_path_free(usb_hid_report_path_t *path)
+{
+	while(!list_empty(&path->head)){
+		usb_hid_report_remove_last_item(path);
+	}
+
+	list_remove(&path->link);
+	free(path);
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Clone content of given usage path to the new one
+ *
+ * @param usage_path Usage path structure to clone
+ * @return New copy of given usage path structure
+ */
+usb_hid_report_path_t *usb_hid_report_path_clone(
+	usb_hid_report_path_t *usage_path)
+{
+	link_t *path_link;
+	usb_hid_report_usage_path_t *path_item;
+	usb_hid_report_usage_path_t *new_path_item;
+	usb_hid_report_path_t *new_usage_path = usb_hid_report_path ();
+
+	if(new_usage_path == NULL){
+		return NULL;
+	}
+
+	new_usage_path->report_id = usage_path->report_id;
+	
+	if(list_empty(&usage_path->head)){
+		return new_usage_path;
+	}
+
+	path_link = usage_path->head.next;
+	while(path_link != &usage_path->head) {
+		path_item = list_get_instance(path_link, 
+			usb_hid_report_usage_path_t, link);
+
+		new_path_item = malloc(sizeof(usb_hid_report_usage_path_t));
+		if(new_path_item == NULL) {
+			return NULL;
+		}
+		
+		list_initialize (&new_path_item->link);		
+		new_path_item->usage_page = path_item->usage_page;
+		new_path_item->usage = path_item->usage;		
+		new_path_item->flags = path_item->flags;		
+		
+		list_append(&new_path_item->link, &new_usage_path->head);
+		new_usage_path->depth++;
+
+		path_link = path_link->next;
+	}
+
+	return new_usage_path;
+}
+
+/*---------------------------------------------------------------------------*/
+/**
+ * Sets report id in usage path structure
+ *
+ * @param path Usage path structure
+ * @param report_id Report id to set
+ * @return Error code
+ */
+int usb_hid_report_path_set_report_id(usb_hid_report_path_t *path, 
+	uint8_t report_id)
+{
+	if(path == NULL){
+		return EINVAL;
+	}
+
+	path->report_id = report_id;
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/src/hidreport.c
===================================================================
--- uspace/lib/usbhid/src/hidreport.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/src/hidreport.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,207 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhid
+ * @{
+ */
+/**
+ * @file
+ * USB HID keyboard device structure and API.
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/debug.h>
+#include <usb/hid/hidparser.h>
+#include <usb/dev/dp.h>
+#include <usb/dev/driver.h>
+#include <usb/dev/pipes.h>
+#include <usb/hid/hid.h>
+#include <usb/descriptor.h>
+#include <usb/dev/request.h>
+
+#include <usb/hid/hidreport.h>
+
+static int usb_hid_get_report_descriptor(usb_device_t *dev, 
+    uint8_t **report_desc, size_t *size)
+{
+	assert(report_desc != NULL);
+	assert(size != NULL);
+	
+	usb_dp_parser_t parser =  {
+		.nesting = usb_dp_standard_descriptor_nesting
+	};
+	
+	usb_dp_parser_data_t parser_data = {
+		.data = dev->descriptors.configuration,
+		.size = dev->descriptors.configuration_size,
+		.arg = NULL
+	};
+	
+	/*
+	 * First nested descriptor of the configuration descriptor.
+	 */
+	uint8_t *d = 
+	    usb_dp_get_nested_descriptor(&parser, &parser_data, 
+	    dev->descriptors.configuration);
+	
+	/*
+	 * Find the interface descriptor corresponding to our interface number.
+	 */
+	int i = 0;
+	while (d != NULL && i < dev->interface_no) {
+		d = usb_dp_get_sibling_descriptor(&parser, &parser_data, 
+		    dev->descriptors.configuration, d);
+		++i;
+	}
+	
+	if (d == NULL) {
+		usb_log_error("The %d. interface descriptor not found!\n",
+		    dev->interface_no);
+		return ENOENT;
+	}
+	
+	/*
+	 * First nested descriptor of the interface descriptor.
+	 */
+	uint8_t *iface_desc = d;
+	d = usb_dp_get_nested_descriptor(&parser, &parser_data, iface_desc);
+	
+	/*
+	 * Search through siblings until the HID descriptor is found.
+	 */
+	while (d != NULL && *(d + 1) != USB_DESCTYPE_HID) {
+		d = usb_dp_get_sibling_descriptor(&parser, &parser_data, 
+		    iface_desc, d);
+	}
+	
+	if (d == NULL) {
+		usb_log_fatal("No HID descriptor found!\n");
+		return ENOENT;
+	}
+	
+	if (*d != sizeof(usb_standard_hid_descriptor_t)) {
+		usb_log_error("HID descriptor has wrong size (%u, expected %zu"
+		    ")\n", *d, sizeof(usb_standard_hid_descriptor_t));
+		return EINVAL;
+	}
+	
+	usb_standard_hid_descriptor_t *hid_desc = 
+	    (usb_standard_hid_descriptor_t *)d;
+	
+	uint16_t length =  hid_desc->report_desc_info.length;
+	size_t actual_size = 0;
+
+	/*
+	 * Allocate space for the report descriptor.
+	 */
+	*report_desc = (uint8_t *)malloc(length);
+	if (*report_desc == NULL) {
+		usb_log_error("Failed to allocate space for Report descriptor."
+		    "\n");
+		return ENOMEM;
+	}
+	
+	usb_log_debug("Getting Report descriptor, expected size: %u\n", length);
+	
+	/*
+	 * Get the descriptor from the device.
+	 */
+	int rc = usb_request_get_descriptor(&dev->ctrl_pipe,
+	    USB_REQUEST_TYPE_STANDARD, USB_REQUEST_RECIPIENT_INTERFACE,
+	    USB_DESCTYPE_HID_REPORT, 0, dev->interface_no,
+	    *report_desc, length, &actual_size);
+
+	if (rc != EOK) {
+		free(*report_desc);
+		*report_desc = NULL;
+		return rc;
+	}
+
+	if (actual_size != length) {
+		free(*report_desc);
+		*report_desc = NULL;
+		usb_log_error("Report descriptor has wrong size (%zu, expected "
+		    "%u)\n", actual_size, length);
+		return EINVAL;
+	}
+	
+	*size = length;
+	
+	usb_log_debug("Done.\n");
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+int usb_hid_process_report_descriptor(usb_device_t *dev, 
+    usb_hid_report_t *report, uint8_t **report_desc, size_t *report_size)
+{
+	if (dev == NULL || report == NULL) {
+		usb_log_error("Failed to process Report descriptor: wrong "
+		    "parameters given.\n");
+		return EINVAL;
+	}
+	
+//	uint8_t *report_desc = NULL;
+//	size_t report_size;
+	
+	int rc = usb_hid_get_report_descriptor(dev, report_desc, report_size);
+	
+	if (rc != EOK) {
+		usb_log_error("Problem with getting Report descriptor: %s.\n",
+		    str_error(rc));
+		if (*report_desc != NULL) {
+			free(*report_desc);
+			*report_desc = NULL;
+		}
+		return rc;
+	}
+	
+	assert(*report_desc != NULL);
+	
+	rc = usb_hid_parse_report_descriptor(report, *report_desc, *report_size);
+	if (rc != EOK) {
+		usb_log_error("Problem parsing Report descriptor: %s.\n",
+		    str_error(rc));
+		free(*report_desc);
+		*report_desc = NULL;
+		return rc;
+	}
+	
+	usb_hid_descriptor_print(report);
+	
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbhid/src/hidreq.c
===================================================================
--- uspace/lib/usbhid/src/hidreq.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhid/src/hidreq.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,379 @@
+/*
+ * Copyright (c) 2011 Lubos Slovak
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbhid
+ * @{
+ */
+/** @file
+ * HID class-specific requests.
+ */
+
+#include <stdint.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/hid/hid.h>
+#include <usb/debug.h>
+#include <usb/dev/request.h>
+#include <usb/dev/pipes.h>
+
+#include <usb/hid/request.h>
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Send Set Report request to the HID device.
+ *
+ * @param hid_dev HID device to send the request to.
+ * @param type Type of the report.
+ * @param buffer Report data.
+ * @param buf_size Report data size (in bytes).
+ *
+ * @retval EOK if successful.
+ * @retval EINVAL if no HID device is given.
+ * @return Other value inherited from function usb_control_request_set().
+ */
+int usbhid_req_set_report(usb_pipe_t *ctrl_pipe, int iface_no,
+    usb_hid_report_type_t type, uint8_t *buffer, size_t buf_size)
+{
+	if (ctrl_pipe == NULL) {
+		usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
+		return EINVAL;
+	}
+	
+	if (iface_no < 0) {
+		usb_log_warning("usbhid_req_set_report(): no interface given."
+		    "\n");
+		return EINVAL;
+	}
+	
+	/*
+	 * No need for checking other parameters, as they are checked in
+	 * the called function (usb_control_request_set()).
+	 */
+	
+	int rc;
+	
+	uint16_t value = 0;
+	value |= (type << 8);
+
+	usb_log_debug("Sending Set_Report request to the device.\n");
+	
+	rc = usb_control_request_set(ctrl_pipe, 
+	    USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
+	    USB_HIDREQ_SET_REPORT, value, iface_no, buffer, buf_size);
+
+	if (rc != EOK) {
+		usb_log_warning("Error sending output report to the keyboard: "
+		    "%s.\n", str_error(rc));
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Send Set Protocol request to the HID device.
+ *
+ * @param hid_dev HID device to send the request to.
+ * @param protocol Protocol to set.
+ *
+ * @retval EOK if successful.
+ * @retval EINVAL if no HID device is given.
+ * @return Other value inherited from function usb_control_request_set().
+ */
+int usbhid_req_set_protocol(usb_pipe_t *ctrl_pipe, int iface_no,
+    usb_hid_protocol_t protocol)
+{
+	if (ctrl_pipe == NULL) {
+		usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
+		return EINVAL;
+	}
+	
+	if (iface_no < 0) {
+		usb_log_warning("usbhid_req_set_report(): no interface given."
+		    "\n");
+		return EINVAL;
+	}
+	
+	/*
+	 * No need for checking other parameters, as they are checked in
+	 * the called function (usb_control_request_set()).
+	 */
+	
+	int rc;
+
+	usb_log_debug("Sending Set_Protocol request to the device ("
+	    "protocol: %d, iface: %d).\n", protocol, iface_no);
+	
+	rc = usb_control_request_set(ctrl_pipe, 
+	    USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
+	    USB_HIDREQ_SET_PROTOCOL, protocol, iface_no, NULL, 0);
+
+	if (rc != EOK) {
+		usb_log_warning("Error sending output report to the keyboard: "
+		    "%s.\n", str_error(rc));
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Send Set Idle request to the HID device.
+ *
+ * @param hid_dev HID device to send the request to.
+ * @param duration Duration value (is multiplicated by 4 by the device to
+ *                 get real duration in miliseconds).
+ *
+ * @retval EOK if successful.
+ * @retval EINVAL if no HID device is given.
+ * @return Other value inherited from function usb_control_request_set().
+ */
+int usbhid_req_set_idle(usb_pipe_t *ctrl_pipe, int iface_no, uint8_t duration)
+{
+	if (ctrl_pipe == NULL) {
+		usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
+		return EINVAL;
+	}
+	
+	if (iface_no < 0) {
+		usb_log_warning("usbhid_req_set_report(): no interface given."
+		    "\n");
+		return EINVAL;
+	}
+	
+	/*
+	 * No need for checking other parameters, as they are checked in
+	 * the called function (usb_control_request_set()).
+	 */
+	
+	int rc;
+
+	usb_log_debug("Sending Set_Idle request to the device ("
+	    "duration: %u, iface: %d).\n", duration, iface_no);
+	
+	uint16_t value = duration << 8;
+	
+	rc = usb_control_request_set(ctrl_pipe, 
+	    USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
+	    USB_HIDREQ_SET_IDLE, value, iface_no, NULL, 0);
+
+	if (rc != EOK) {
+		usb_log_warning("Error sending output report to the keyboard: "
+		    "%s.\n", str_error(rc));
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Send Get Report request to the HID device.
+ *
+ * @param[in] hid_dev HID device to send the request to.
+ * @param[in] type Type of the report.
+ * @param[in][out] buffer Buffer for the report data.
+ * @param[in] buf_size Size of the buffer (in bytes).
+ * @param[out] actual_size Actual size of report received from the device 
+ *                         (in bytes).
+ *
+ * @retval EOK if successful.
+ * @retval EINVAL if no HID device is given.
+ * @return Other value inherited from function usb_control_request_set().
+ */
+int usbhid_req_get_report(usb_pipe_t *ctrl_pipe, int iface_no, 
+    usb_hid_report_type_t type, uint8_t *buffer, size_t buf_size, 
+    size_t *actual_size)
+{
+	if (ctrl_pipe == NULL) {
+		usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
+		return EINVAL;
+	}
+	
+	if (iface_no < 0) {
+		usb_log_warning("usbhid_req_set_report(): no interface given."
+		    "\n");
+		return EINVAL;
+	}
+	
+	/*
+	 * No need for checking other parameters, as they are checked in
+	 * the called function (usb_control_request_set()).
+	 */
+	
+	int rc;
+
+	uint16_t value = 0;
+	value |= (type << 8);
+	
+	usb_log_debug("Sending Get_Report request to the device.\n");
+	
+	rc = usb_control_request_get(ctrl_pipe, 
+	    USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
+	    USB_HIDREQ_GET_REPORT, value, iface_no, buffer, buf_size,
+	    actual_size);
+
+	if (rc != EOK) {
+		usb_log_warning("Error sending output report to the keyboard: "
+		    "%s.\n", str_error(rc));
+		return rc;
+	}
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Send Get Protocol request to the HID device.
+ *
+ * @param[in] hid_dev HID device to send the request to.
+ * @param[out] protocol Current protocol of the device.
+ *
+ * @retval EOK if successful.
+ * @retval EINVAL if no HID device is given.
+ * @return Other value inherited from function usb_control_request_set().
+ */
+int usbhid_req_get_protocol(usb_pipe_t *ctrl_pipe, int iface_no, 
+    usb_hid_protocol_t *protocol)
+{
+	if (ctrl_pipe == NULL) {
+		usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
+		return EINVAL;
+	}
+	
+	if (iface_no < 0) {
+		usb_log_warning("usbhid_req_set_report(): no interface given."
+		    "\n");
+		return EINVAL;
+	}
+	
+	/*
+	 * No need for checking other parameters, as they are checked in
+	 * the called function (usb_control_request_set()).
+	 */
+	
+	int rc;	
+
+	usb_log_debug("Sending Get_Protocol request to the device ("
+	    "iface: %d).\n", iface_no);
+	
+	uint8_t buffer[1];
+	size_t actual_size = 0;
+	
+	rc = usb_control_request_get(ctrl_pipe, 
+	    USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
+	    USB_HIDREQ_GET_PROTOCOL, 0, iface_no, buffer, 1, &actual_size);
+
+	if (rc != EOK) {
+		usb_log_warning("Error sending output report to the keyboard: "
+		    "%s.\n", str_error(rc));
+		return rc;
+	}
+	
+	if (actual_size != 1) {
+		usb_log_warning("Wrong data size: %zu, expected: 1.\n",
+			actual_size);
+		return ELIMIT;
+	}
+	
+	*protocol = buffer[0];
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * Send Get Idle request to the HID device.
+ *
+ * @param[in] hid_dev HID device to send the request to.
+ * @param[out] duration Duration value (multiplicate by 4 to get real duration
+ *                      in miliseconds).
+ *
+ * @retval EOK if successful.
+ * @retval EINVAL if no HID device is given.
+ * @return Other value inherited from one of functions 
+ *         usb_pipe_start_session(), usb_pipe_end_session(),
+ *         usb_control_request_set().
+ */
+int usbhid_req_get_idle(usb_pipe_t *ctrl_pipe, int iface_no, uint8_t *duration)
+{
+	if (ctrl_pipe == NULL) {
+		usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
+		return EINVAL;
+	}
+	
+	if (iface_no < 0) {
+		usb_log_warning("usbhid_req_set_report(): no interface given."
+		    "\n");
+		return EINVAL;
+	}
+	
+	/*
+	 * No need for checking other parameters, as they are checked in
+	 * the called function (usb_control_request_set()).
+	 */
+	
+	int rc;
+
+	usb_log_debug("Sending Get_Idle request to the device ("
+	    "iface: %d).\n", iface_no);
+	
+	uint16_t value = 0;
+	uint8_t buffer[1];
+	size_t actual_size = 0;
+	
+	rc = usb_control_request_get(ctrl_pipe, 
+	    USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
+	    USB_HIDREQ_GET_IDLE, value, iface_no, buffer, 1, 
+	    &actual_size);
+
+	if (rc != EOK) {
+		usb_log_warning("Error sending output report to the keyboard: "
+		    "%s.\n", str_error(rc));
+		return rc;
+	}
+	
+	if (actual_size != 1) {
+		usb_log_warning("Wrong data size: %zu, expected: 1.\n",
+			actual_size);
+		return ELIMIT;
+	}
+	
+	*duration = buffer[0];
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+/**
+ * @}
+ */
Index: uspace/lib/usbhost/Makefile
===================================================================
--- uspace/lib/usbhost/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhost/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,42 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+LIBRARY = libusbhost
+EXTRA_CFLAGS += \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include \
+	-Iinclude
+
+SOURCES = \
+	src/batch.c \
+	src/device_keeper.c \
+	src/endpoint.c \
+	src/usb_endpoint_manager.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/lib/usbhost/include/usb/host/batch.h
===================================================================
--- uspace/lib/usbhost/include/usb/host/batch.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhost/include/usb/host/batch.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup libusbhost
+ * @{
+ */
+/** @file
+ * USB transfer transaction structures.
+ */
+#ifndef LIBUSBHOST_HOST_BATCH_H
+#define LIBUSBHOST_HOST_BATCH_H
+
+#include <adt/list.h>
+
+#include <usbhc_iface.h>
+#include <usb/usb.h>
+#include <usb/host/endpoint.h>
+
+typedef struct usb_transfer_batch usb_transfer_batch_t;
+struct usb_transfer_batch {
+	endpoint_t *ep;
+	link_t link;
+	usbhc_iface_transfer_in_callback_t callback_in;
+	usbhc_iface_transfer_out_callback_t callback_out;
+	void *arg;
+	char *buffer;
+	char *data_buffer;
+	size_t buffer_size;
+	char *setup_buffer;
+	size_t setup_size;
+	size_t transfered_size;
+	void (*next_step)(usb_transfer_batch_t *);
+	int error;
+	ddf_fun_t *fun;
+	void *private_data;
+	void (*private_data_dtor)(void *p_data);
+};
+
+void usb_transfer_batch_init(
+    usb_transfer_batch_t *instance,
+    endpoint_t *ep,
+    char *buffer,
+    char *data_buffer,
+    size_t buffer_size,
+    char *setup_buffer,
+    size_t setup_size,
+    usbhc_iface_transfer_in_callback_t func_in,
+    usbhc_iface_transfer_out_callback_t func_out,
+    void *arg,
+    ddf_fun_t *fun,
+    void *private_data,
+    void (*private_data_dtor)(void *p_data)
+);
+
+void usb_transfer_batch_call_in_and_dispose(usb_transfer_batch_t *instance);
+void usb_transfer_batch_call_out_and_dispose(usb_transfer_batch_t *instance);
+void usb_transfer_batch_finish(usb_transfer_batch_t *instance);
+void usb_transfer_batch_dispose(usb_transfer_batch_t *instance);
+
+static inline void usb_transfer_batch_finish_error(
+    usb_transfer_batch_t *instance, int error)
+{
+	assert(instance);
+	instance->error = error;
+	usb_transfer_batch_finish(instance);
+}
+
+static inline usb_transfer_batch_t *usb_transfer_batch_from_link(link_t *l)
+{
+	assert(l);
+	return list_get_instance(l, usb_transfer_batch_t, link);
+}
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhost/include/usb/host/device_keeper.h
===================================================================
--- uspace/lib/usbhost/include/usb/host/device_keeper.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhost/include/usb/host/device_keeper.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhost
+ * @{
+ */
+/** @file
+ * Device keeper structure and functions.
+ *
+ * Typical USB host controller needs to keep track of various settings for
+ * each device that is connected to it.
+ * State of toggle bit, device speed etc. etc.
+ * This structure shall simplify the management.
+ */
+#ifndef LIBUSBHOST_HOST_DEVICE_KEEPER_H
+#define LIBUSBHOST_HOST_DEVICE_KEEPER_H
+
+#include <adt/list.h>
+#include <devman.h>
+#include <fibril_synch.h>
+#include <usb/usb.h>
+#include <usb/host/endpoint.h>
+
+/** Number of USB address for array dimensions. */
+#define USB_ADDRESS_COUNT (USB11_ADDRESS_MAX + 1)
+
+/** Information about attached USB device. */
+struct usb_device_info {
+	usb_speed_t speed;
+	bool occupied;
+	devman_handle_t handle;
+};
+
+/** Host controller device keeper.
+ * You shall not access members directly but only using functions below.
+ */
+typedef struct {
+	struct usb_device_info devices[USB_ADDRESS_COUNT];
+	fibril_mutex_t guard;
+	usb_address_t last_address;
+} usb_device_keeper_t;
+
+void usb_device_keeper_init(usb_device_keeper_t *instance);
+
+usb_address_t device_keeper_get_free_address(usb_device_keeper_t *instance,
+    usb_speed_t speed);
+
+void usb_device_keeper_bind(usb_device_keeper_t *instance,
+    usb_address_t address, devman_handle_t handle);
+
+void usb_device_keeper_release(usb_device_keeper_t *instance,
+    usb_address_t address);
+
+usb_address_t usb_device_keeper_find(usb_device_keeper_t *instance,
+    devman_handle_t handle);
+
+bool usb_device_keeper_find_by_address(usb_device_keeper_t *instance,
+    usb_address_t address, devman_handle_t *handle);
+
+usb_speed_t usb_device_keeper_get_speed(usb_device_keeper_t *instance,
+    usb_address_t address);
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhost/include/usb/host/endpoint.h
===================================================================
--- uspace/lib/usbhost/include/usb/host/endpoint.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhost/include/usb/host/endpoint.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhost
+ * @{
+ */
+/** @file
+ *
+ */
+#ifndef LIBUSBHOST_HOST_ENDPOINT_H
+#define LIBUSBHOST_HOST_ENDPOINT_H
+
+#include <assert.h>
+#include <bool.h>
+#include <adt/list.h>
+#include <fibril_synch.h>
+
+#include <usb/usb.h>
+
+typedef struct endpoint {
+	usb_address_t address;
+	usb_endpoint_t endpoint;
+	usb_direction_t direction;
+	usb_transfer_type_t transfer_type;
+	usb_speed_t speed;
+	size_t max_packet_size;
+	unsigned toggle:1;
+	fibril_mutex_t guard;
+	fibril_condvar_t avail;
+	volatile bool active;
+	struct {
+		void *data;
+		int (*toggle_get)(void *);
+		void (*toggle_set)(void *, int);
+	} hc_data;
+} endpoint_t;
+
+int endpoint_init(endpoint_t *instance, usb_address_t address,
+    usb_endpoint_t endpoint, usb_direction_t direction,
+    usb_transfer_type_t type, usb_speed_t speed, size_t max_packet_size);
+
+void endpoint_destroy(endpoint_t *instance);
+
+void endpoint_set_hc_data(endpoint_t *instance,
+    void *data, int (*toggle_get)(void *), void (*toggle_set)(void *, int));
+
+void endpoint_clear_hc_data(endpoint_t *instance);
+
+void endpoint_use(endpoint_t *instance);
+
+void endpoint_release(endpoint_t *instance);
+
+int endpoint_toggle_get(endpoint_t *instance);
+
+void endpoint_toggle_set(endpoint_t *instance, int toggle);
+
+void endpoint_toggle_reset_filtered(endpoint_t *instance, usb_target_t target);
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbhost/include/usb/host/usb_endpoint_manager.h
===================================================================
--- uspace/lib/usbhost/include/usb/host/usb_endpoint_manager.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhost/include/usb/host/usb_endpoint_manager.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup libusbhost
+ * @{
+ */
+/** @file
+ * Device keeper structure and functions.
+ *
+ * Typical USB host controller needs to keep track of various settings for
+ * each device that is connected to it.
+ * State of toggle bit, device speed etc. etc.
+ * This structure shall simplify the management.
+ */
+#ifndef LIBUSBHOST_HOST_USB_ENDPOINT_MANAGER_H
+#define LIBUSBHOST_HOST_YSB_ENDPOINT_MANAGER_H
+
+#include <stdlib.h>
+#include <adt/hash_table.h>
+#include <fibril_synch.h>
+#include <usb/usb.h>
+#include <usb/host/endpoint.h>
+
+#define BANDWIDTH_TOTAL_USB11 12000000
+#define BANDWIDTH_AVAILABLE_USB11 ((BANDWIDTH_TOTAL_USB11 / 10) * 9)
+
+typedef struct usb_endpoint_manager {
+	hash_table_t ep_table;
+	fibril_mutex_t guard;
+	fibril_condvar_t change;
+	size_t free_bw;
+} usb_endpoint_manager_t;
+
+size_t bandwidth_count_usb11(usb_speed_t speed, usb_transfer_type_t type,
+    size_t size, size_t max_packet_size);
+
+int usb_endpoint_manager_init(usb_endpoint_manager_t *instance,
+    size_t available_bandwidth);
+
+void usb_endpoint_manager_destroy(usb_endpoint_manager_t *instance);
+
+int usb_endpoint_manager_register_ep(usb_endpoint_manager_t *instance,
+    endpoint_t *ep, size_t data_size);
+
+int usb_endpoint_manager_unregister_ep(usb_endpoint_manager_t *instance,
+    usb_address_t address, usb_endpoint_t ep, usb_direction_t direction);
+
+endpoint_t * usb_endpoint_manager_get_ep(usb_endpoint_manager_t *instance,
+    usb_address_t address, usb_endpoint_t ep, usb_direction_t direction,
+    size_t *bw);
+
+void usb_endpoint_manager_reset_if_need(
+    usb_endpoint_manager_t *instance, usb_target_t target, const uint8_t *data);
+
+static inline int usb_endpoint_manager_add_ep(usb_endpoint_manager_t *instance,
+    usb_address_t address, usb_endpoint_t endpoint, usb_direction_t direction,
+    usb_transfer_type_t type, usb_speed_t speed, size_t max_packet_size,
+    size_t data_size)
+{
+	endpoint_t *ep = malloc(sizeof(endpoint_t));
+	if (ep == NULL)
+		return ENOMEM;
+
+	int ret = endpoint_init(ep, address, endpoint, direction, type, speed,
+	    max_packet_size);
+	if (ret != EOK) {
+		free(ep);
+		return ret;
+	}
+
+	ret = usb_endpoint_manager_register_ep(instance, ep, data_size);
+	if (ret != EOK) {
+		endpoint_destroy(ep);
+		return ret;
+	}
+	return EOK;
+}
+#endif
+/**
+ * @}
+ */
+
Index: uspace/lib/usbhost/src/batch.c
===================================================================
--- uspace/lib/usbhost/src/batch.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhost/src/batch.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,176 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/** @addtogroup libusbhost
+ * @{
+ */
+/** @file
+ * USB transfer transaction structures (implementation).
+ */
+#include <errno.h>
+#include <str_error.h>
+
+#include <usb/usb.h>
+#include <usb/debug.h>
+#include <usb/host/batch.h>
+
+void usb_transfer_batch_call_in(usb_transfer_batch_t *instance);
+void usb_transfer_batch_call_out(usb_transfer_batch_t *instance);
+
+void usb_transfer_batch_init(
+    usb_transfer_batch_t *instance,
+    endpoint_t *ep,
+    char *buffer,
+    char *data_buffer,
+    size_t buffer_size,
+    char *setup_buffer,
+    size_t setup_size,
+    usbhc_iface_transfer_in_callback_t func_in,
+    usbhc_iface_transfer_out_callback_t func_out,
+    void *arg,
+    ddf_fun_t *fun,
+    void *private_data,
+    void (*private_data_dtor)(void *p_data)
+    )
+{
+	assert(instance);
+	link_initialize(&instance->link);
+	instance->ep = ep;
+	instance->callback_in = func_in;
+	instance->callback_out = func_out;
+	instance->arg = arg;
+	instance->buffer = buffer;
+	instance->data_buffer = data_buffer;
+	instance->buffer_size = buffer_size;
+	instance->setup_buffer = setup_buffer;
+	instance->setup_size = setup_size;
+	instance->fun = fun;
+	instance->private_data = private_data;
+	instance->private_data_dtor = private_data_dtor;
+	instance->transfered_size = 0;
+	instance->next_step = NULL;
+	instance->error = EOK;
+	endpoint_use(instance->ep);
+}
+/*----------------------------------------------------------------------------*/
+/** Helper function, calls callback and correctly destroys batch structure.
+ *
+ * @param[in] instance Batch structure to use.
+ */
+void usb_transfer_batch_call_in_and_dispose(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	usb_transfer_batch_call_in(instance);
+	usb_transfer_batch_dispose(instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Helper function calls callback and correctly destroys batch structure.
+ *
+ * @param[in] instance Batch structure to use.
+ */
+void usb_transfer_batch_call_out_and_dispose(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	usb_transfer_batch_call_out(instance);
+	usb_transfer_batch_dispose(instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Mark batch as finished and continue with next step.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ */
+void usb_transfer_batch_finish(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	assert(instance->ep);
+	endpoint_release(instance->ep);
+	instance->next_step(instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare data, get error status and call callback in.
+ *
+ * @param[in] instance Batch structure to use.
+ * Copies data from transport buffer, and calls callback with appropriate
+ * parameters.
+ */
+void usb_transfer_batch_call_in(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	assert(instance->callback_in);
+	assert(instance->ep);
+
+	/* We are data in, we need data */
+	memcpy(instance->buffer, instance->data_buffer, instance->buffer_size);
+
+	usb_log_debug("Batch(%p) done (T%d.%d, %s %s in, %zuB): %s (%d).\n",
+	    instance, instance->ep->address, instance->ep->endpoint,
+	    usb_str_speed(instance->ep->speed),
+	    usb_str_transfer_type_short(instance->ep->transfer_type),
+	    instance->transfered_size, str_error(instance->error),
+	    instance->error);
+
+	instance->callback_in(instance->fun, instance->error,
+	    instance->transfered_size, instance->arg);
+}
+/*----------------------------------------------------------------------------*/
+/** Get error status and call callback out.
+ *
+ * @param[in] instance Batch structure to use.
+ */
+void usb_transfer_batch_call_out(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	assert(instance->callback_out);
+
+	usb_log_debug("Batch(%p) done (T%d.%d, %s %s out): %s (%d).\n",
+	    instance, instance->ep->address, instance->ep->endpoint,
+	    usb_str_speed(instance->ep->speed),
+	    usb_str_transfer_type_short(instance->ep->transfer_type),
+	    str_error(instance->error), instance->error);
+
+	instance->callback_out(instance->fun,
+	    instance->error, instance->arg);
+}
+/*----------------------------------------------------------------------------*/
+/** Correctly dispose all used data structures.
+ *
+ * @param[in] instance Batch structure to use.
+ */
+void usb_transfer_batch_dispose(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	usb_log_debug("Batch(%p) disposing.\n", instance);
+	if (instance->private_data) {
+		assert(instance->private_data_dtor);
+		instance->private_data_dtor(instance->private_data);
+	}
+	free(instance);
+}
+/**
+ * @}
+ */
Index: uspace/lib/usbhost/src/device_keeper.c
===================================================================
--- uspace/lib/usbhost/src/device_keeper.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhost/src/device_keeper.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,208 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbhost
+ * @{
+ */
+/** @file
+ * Device keeper structure and functions (implementation).
+ */
+#include <assert.h>
+#include <errno.h>
+#include <usb/debug.h>
+#include <usb/host/device_keeper.h>
+
+/*----------------------------------------------------------------------------*/
+/** Initialize device keeper structure.
+ *
+ * @param[in] instance Memory place to initialize.
+ *
+ * Set all values to false/0.
+ */
+void usb_device_keeper_init(usb_device_keeper_t *instance)
+{
+	assert(instance);
+	unsigned i = 0;
+	for (; i < USB_ADDRESS_COUNT; ++i) {
+		instance->devices[i].occupied = false;
+		instance->devices[i].handle = 0;
+		instance->devices[i].speed = USB_SPEED_MAX;
+	}
+	// TODO: is this hack enough?
+	// (it is needed to allow smooth registration at default address)
+	instance->devices[0].occupied = true;
+	instance->last_address = 0;
+	fibril_mutex_initialize(&instance->guard);
+}
+/*----------------------------------------------------------------------------*/
+/** Get a free USB address
+ *
+ * @param[in] instance Device keeper structure to use.
+ * @param[in] speed Speed of the device requiring address.
+ * @return Free address, or error code.
+ */
+usb_address_t device_keeper_get_free_address(
+    usb_device_keeper_t *instance, usb_speed_t speed)
+{
+	assert(instance);
+	fibril_mutex_lock(&instance->guard);
+
+	usb_address_t new_address = instance->last_address;
+	do {
+		++new_address;
+		if (new_address > USB11_ADDRESS_MAX)
+			new_address = 1;
+		if (new_address == instance->last_address) {
+			fibril_mutex_unlock(&instance->guard);
+			return ENOSPC;
+		}
+	} while (instance->devices[new_address].occupied);
+
+	assert(new_address != USB_ADDRESS_DEFAULT);
+	assert(instance->devices[new_address].occupied == false);
+
+	instance->devices[new_address].occupied = true;
+	instance->devices[new_address].speed = speed;
+	instance->last_address = new_address;
+
+	fibril_mutex_unlock(&instance->guard);
+	return new_address;
+}
+/*----------------------------------------------------------------------------*/
+/** Bind USB address to devman handle.
+ *
+ * @param[in] instance Device keeper structure to use.
+ * @param[in] address Device address
+ * @param[in] handle Devman handle of the device.
+ */
+void usb_device_keeper_bind(usb_device_keeper_t *instance,
+    usb_address_t address, devman_handle_t handle)
+{
+	assert(instance);
+	fibril_mutex_lock(&instance->guard);
+
+	assert(address > 0);
+	assert(address <= USB11_ADDRESS_MAX);
+	assert(instance->devices[address].occupied);
+
+	instance->devices[address].handle = handle;
+	fibril_mutex_unlock(&instance->guard);
+}
+/*----------------------------------------------------------------------------*/
+/** Release used USB address.
+ *
+ * @param[in] instance Device keeper structure to use.
+ * @param[in] address Device address
+ */
+void usb_device_keeper_release(
+    usb_device_keeper_t *instance, usb_address_t address)
+{
+	assert(instance);
+	assert(address > 0);
+	assert(address <= USB11_ADDRESS_MAX);
+
+	fibril_mutex_lock(&instance->guard);
+	assert(instance->devices[address].occupied);
+
+	instance->devices[address].occupied = false;
+	fibril_mutex_unlock(&instance->guard);
+}
+/*----------------------------------------------------------------------------*/
+/** Find USB address associated with the device
+ *
+ * @param[in] instance Device keeper structure to use.
+ * @param[in] handle Devman handle of the device seeking its address.
+ * @return USB Address, or error code.
+ */
+usb_address_t usb_device_keeper_find(
+    usb_device_keeper_t *instance, devman_handle_t handle)
+{
+	assert(instance);
+	fibril_mutex_lock(&instance->guard);
+	usb_address_t address = 1;
+	while (address <= USB11_ADDRESS_MAX) {
+		if (instance->devices[address].handle == handle) {
+			assert(instance->devices[address].occupied);
+			fibril_mutex_unlock(&instance->guard);
+			return address;
+		}
+		++address;
+	}
+	fibril_mutex_unlock(&instance->guard);
+	return ENOENT;
+}
+
+/** Find devman handle assigned to USB address.
+ * Intentionally refuse to find handle of default address.
+ *
+ * @param[in] instance Device keeper structure to use.
+ * @param[in] address Address the caller wants to find.
+ * @param[out] handle Where to store found handle.
+ * @return Whether such address is currently occupied.
+ */
+bool usb_device_keeper_find_by_address(usb_device_keeper_t *instance,
+    usb_address_t address, devman_handle_t *handle)
+{
+	assert(instance);
+	fibril_mutex_lock(&instance->guard);
+	if ((address <= 0) || (address >= USB_ADDRESS_COUNT)) {
+		fibril_mutex_unlock(&instance->guard);
+		return false;
+	}
+	if (!instance->devices[address].occupied) {
+		fibril_mutex_unlock(&instance->guard);
+		return false;
+	}
+
+	if (handle != NULL) {
+		*handle = instance->devices[address].handle;
+	}
+
+	fibril_mutex_unlock(&instance->guard);
+	return true;
+}
+
+/*----------------------------------------------------------------------------*/
+/** Get speed associated with the address
+ *
+ * @param[in] instance Device keeper structure to use.
+ * @param[in] address Address of the device.
+ * @return USB speed.
+ */
+usb_speed_t usb_device_keeper_get_speed(
+    usb_device_keeper_t *instance, usb_address_t address)
+{
+	assert(instance);
+	assert(address >= 0);
+	assert(address <= USB11_ADDRESS_MAX);
+
+	return instance->devices[address].speed;
+}
+/**
+ * @}
+ */
Index: uspace/lib/usbhost/src/endpoint.c
===================================================================
--- uspace/lib/usbhost/src/endpoint.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhost/src/endpoint.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI host controller driver structure
+ */
+
+#include <assert.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <usb/host/endpoint.h>
+
+int endpoint_init(endpoint_t *instance, usb_address_t address,
+    usb_endpoint_t endpoint, usb_direction_t direction,
+    usb_transfer_type_t type, usb_speed_t speed, size_t max_packet_size)
+{
+	assert(instance);
+	instance->address = address;
+	instance->endpoint = endpoint;
+	instance->direction = direction;
+	instance->transfer_type = type;
+	instance->speed = speed;
+	instance->max_packet_size = max_packet_size;
+	instance->toggle = 0;
+	instance->active = false;
+	fibril_mutex_initialize(&instance->guard);
+	fibril_condvar_initialize(&instance->avail);
+	endpoint_clear_hc_data(instance);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+void endpoint_destroy(endpoint_t *instance)
+{
+	assert(instance);
+	assert(!instance->active);
+	free(instance);
+}
+/*----------------------------------------------------------------------------*/
+void endpoint_set_hc_data(endpoint_t *instance,
+    void *data, int (*toggle_get)(void *), void (*toggle_set)(void *, int))
+{
+	assert(instance);
+	instance->hc_data.data = data;
+	instance->hc_data.toggle_get = toggle_get;
+	instance->hc_data.toggle_set = toggle_set;
+}
+/*----------------------------------------------------------------------------*/
+void endpoint_clear_hc_data(endpoint_t *instance)
+{
+	assert(instance);
+	instance->hc_data.data = NULL;
+	instance->hc_data.toggle_get = NULL;
+	instance->hc_data.toggle_set = NULL;
+}
+/*----------------------------------------------------------------------------*/
+void endpoint_use(endpoint_t *instance)
+{
+	assert(instance);
+	fibril_mutex_lock(&instance->guard);
+	while (instance->active)
+		fibril_condvar_wait(&instance->avail, &instance->guard);
+	instance->active = true;
+	fibril_mutex_unlock(&instance->guard);
+}
+/*----------------------------------------------------------------------------*/
+void endpoint_release(endpoint_t *instance)
+{
+	assert(instance);
+	fibril_mutex_lock(&instance->guard);
+	instance->active = false;
+	fibril_mutex_unlock(&instance->guard);
+	fibril_condvar_signal(&instance->avail);
+}
+/*----------------------------------------------------------------------------*/
+int endpoint_toggle_get(endpoint_t *instance)
+{
+	assert(instance);
+	if (instance->hc_data.toggle_get)
+		instance->toggle =
+		    instance->hc_data.toggle_get(instance->hc_data.data);
+	return (int)instance->toggle;
+}
+/*----------------------------------------------------------------------------*/
+void endpoint_toggle_set(endpoint_t *instance, int toggle)
+{
+	assert(instance);
+	assert(toggle == 0 || toggle == 1);
+	if (instance->hc_data.toggle_set)
+		instance->hc_data.toggle_set(instance->hc_data.data, toggle);
+	instance->toggle = toggle;
+}
+/*----------------------------------------------------------------------------*/
+void endpoint_toggle_reset_filtered(endpoint_t *instance, usb_target_t target)
+{
+	assert(instance);
+	if (instance->address == target.address &&
+	    (instance->endpoint == target.endpoint || target.endpoint == 0))
+		endpoint_toggle_set(instance, 0);
+}
+/**
+ * @}
+ */
Index: uspace/lib/usbhost/src/usb_endpoint_manager.c
===================================================================
--- uspace/lib/usbhost/src/usb_endpoint_manager.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbhost/src/usb_endpoint_manager.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,291 @@
+/*
+ * Copyright (c) 2011 Jan Vesely
+ * All rights eps.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <bool.h>
+#include <assert.h>
+#include <errno.h>
+
+#include <usb/debug.h>
+#include <usb/host/usb_endpoint_manager.h>
+
+#define BUCKET_COUNT 7
+
+#define MAX_KEYS (3)
+typedef struct {
+	link_t link;
+	size_t bw;
+	endpoint_t *ep;
+} node_t;
+/*----------------------------------------------------------------------------*/
+static hash_index_t node_hash(unsigned long key[])
+{
+	hash_index_t hash = 0;
+	unsigned i = 0;
+	for (;i < MAX_KEYS; ++i) {
+		hash ^= key[i];
+	}
+	hash %= BUCKET_COUNT;
+	return hash;
+}
+/*----------------------------------------------------------------------------*/
+static int node_compare(unsigned long key[], hash_count_t keys, link_t *item)
+{
+	assert(item);
+	node_t *node = hash_table_get_instance(item, node_t, link);
+	assert(node);
+	assert(node->ep);
+	bool match = true;
+	switch (keys) {
+	case 3:
+		match = match && (key[2] == node->ep->direction);
+	case 2:
+		match = match && (key[1] == (unsigned long)node->ep->endpoint);
+	case 1:
+		match = match && (key[0] == (unsigned long)node->ep->address);
+		break;
+	default:
+		match = false;
+	}
+	return match;
+}
+/*----------------------------------------------------------------------------*/
+static void node_remove(link_t *item)
+{
+	assert(item);
+	node_t *node = hash_table_get_instance(item, node_t, link);
+	endpoint_destroy(node->ep);
+	free(node);
+}
+/*----------------------------------------------------------------------------*/
+static void node_toggle_reset_filtered(link_t *item, void *arg)
+{
+	assert(item);
+	node_t *node = hash_table_get_instance(item, node_t, link);
+	usb_target_t *target = arg;
+	endpoint_toggle_reset_filtered(node->ep, *target);
+}
+/*----------------------------------------------------------------------------*/
+static hash_table_operations_t op = {
+	.hash = node_hash,
+	.compare = node_compare,
+	.remove_callback = node_remove,
+};
+/*----------------------------------------------------------------------------*/
+size_t bandwidth_count_usb11(usb_speed_t speed, usb_transfer_type_t type,
+    size_t size, size_t max_packet_size)
+{
+	/* We care about bandwidth only for interrupt and isochronous. */
+	if ((type != USB_TRANSFER_INTERRUPT)
+	    && (type != USB_TRANSFER_ISOCHRONOUS)) {
+		return 0;
+	}
+
+	const unsigned packet_count =
+	    (size + max_packet_size - 1) / max_packet_size;
+	/* TODO: It may be that ISO and INT transfers use only one data packet
+	 * per transaction, but I did not find text in UB spec that confirms
+	 * this */
+	/* NOTE: All data packets will be considered to be max_packet_size */
+	switch (speed)
+	{
+	case USB_SPEED_LOW:
+		assert(type == USB_TRANSFER_INTERRUPT);
+		/* Protocol overhead 13B
+		 * (3 SYNC bytes, 3 PID bytes, 2 Endpoint + CRC bytes, 2
+		 * CRC bytes, and a 3-byte interpacket delay)
+		 * see USB spec page 45-46. */
+		/* Speed penalty 8: low speed is 8-times slower*/
+		return packet_count * (13 + max_packet_size) * 8;
+	case USB_SPEED_FULL:
+		/* Interrupt transfer overhead see above
+		 * or page 45 of USB spec */
+		if (type == USB_TRANSFER_INTERRUPT)
+			return packet_count * (13 + max_packet_size);
+
+		assert(type == USB_TRANSFER_ISOCHRONOUS);
+		/* Protocol overhead 9B
+		 * (2 SYNC bytes, 2 PID bytes, 2 Endpoint + CRC bytes, 2 CRC
+		 * bytes, and a 1-byte interpacket delay)
+		 * see USB spec page 42 */
+		return packet_count * (9 + max_packet_size);
+	default:
+		return 0;
+	}
+}
+/*----------------------------------------------------------------------------*/
+int usb_endpoint_manager_init(usb_endpoint_manager_t *instance,
+    size_t available_bandwidth)
+{
+	assert(instance);
+	fibril_mutex_initialize(&instance->guard);
+	fibril_condvar_initialize(&instance->change);
+	instance->free_bw = available_bandwidth;
+	bool ht =
+	    hash_table_create(&instance->ep_table, BUCKET_COUNT, MAX_KEYS, &op);
+	return ht ? EOK : ENOMEM;
+}
+/*----------------------------------------------------------------------------*/
+void usb_endpoint_manager_destroy(usb_endpoint_manager_t *instance)
+{
+	hash_table_destroy(&instance->ep_table);
+}
+/*----------------------------------------------------------------------------*/
+int usb_endpoint_manager_register_ep(usb_endpoint_manager_t *instance,
+    endpoint_t *ep, size_t data_size)
+{
+	assert(ep);
+	size_t bw = bandwidth_count_usb11(ep->speed, ep->transfer_type,
+	    data_size, ep->max_packet_size);
+	assert(instance);
+
+	unsigned long key[MAX_KEYS] =
+	    {ep->address, ep->endpoint, ep->direction};
+	fibril_mutex_lock(&instance->guard);
+
+	link_t *item =
+	    hash_table_find(&instance->ep_table, key);
+	if (item != NULL) {
+		fibril_mutex_unlock(&instance->guard);
+		return EEXISTS;
+	}
+
+	if (bw > instance->free_bw) {
+		fibril_mutex_unlock(&instance->guard);
+		return ENOSPC;
+	}
+
+	node_t *node = malloc(sizeof(node_t));
+	if (node == NULL) {
+		fibril_mutex_unlock(&instance->guard);
+		return ENOMEM;
+	}
+
+	node->bw = bw;
+	node->ep = ep;
+	link_initialize(&node->link);
+
+	hash_table_insert(&instance->ep_table, key, &node->link);
+	instance->free_bw -= bw;
+	fibril_mutex_unlock(&instance->guard);
+	fibril_condvar_broadcast(&instance->change);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+int usb_endpoint_manager_unregister_ep(usb_endpoint_manager_t *instance,
+    usb_address_t address, usb_endpoint_t endpoint, usb_direction_t direction)
+{
+	assert(instance);
+	unsigned long key[MAX_KEYS] = {address, endpoint, direction};
+
+	fibril_mutex_lock(&instance->guard);
+	link_t *item = hash_table_find(&instance->ep_table, key);
+	if (item == NULL) {
+		fibril_mutex_unlock(&instance->guard);
+		return EINVAL;
+	}
+
+	node_t *node = hash_table_get_instance(item, node_t, link);
+	if (node->ep->active)
+		return EBUSY;
+
+	instance->free_bw += node->bw;
+	hash_table_remove(&instance->ep_table, key, MAX_KEYS);
+
+	fibril_mutex_unlock(&instance->guard);
+	fibril_condvar_broadcast(&instance->change);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+endpoint_t * usb_endpoint_manager_get_ep(usb_endpoint_manager_t *instance,
+    usb_address_t address, usb_endpoint_t endpoint, usb_direction_t direction,
+    size_t *bw)
+{
+	assert(instance);
+	unsigned long key[MAX_KEYS] = {address, endpoint, direction};
+
+	fibril_mutex_lock(&instance->guard);
+	link_t *item = hash_table_find(&instance->ep_table, key);
+	if (item == NULL) {
+		fibril_mutex_unlock(&instance->guard);
+		return NULL;
+	}
+	node_t *node = hash_table_get_instance(item, node_t, link);
+	if (bw)
+		*bw = node->bw;
+
+	fibril_mutex_unlock(&instance->guard);
+	return node->ep;
+}
+/*----------------------------------------------------------------------------*/
+/** Check setup packet data for signs of toggle reset.
+ *
+ * @param[in] instance Device keeper structure to use.
+ * @param[in] target Device to receive setup packet.
+ * @param[in] data Setup packet data.
+ *
+ * Really ugly one.
+ */
+void usb_endpoint_manager_reset_if_need(
+    usb_endpoint_manager_t *instance, usb_target_t target, const uint8_t *data)
+{
+	assert(instance);
+	if (target.endpoint > 15 || target.endpoint < 0
+	    || target.address >= USB11_ADDRESS_MAX || target.address < 0) {
+		usb_log_error("Invalid data when checking for toggle reset.\n");
+		return;
+	}
+
+	switch (data[1])
+	{
+	case 0x01: /*clear feature*/
+		/* recipient is endpoint, value is zero (ENDPOINT_STALL) */
+		if (((data[0] & 0xf) == 1) && ((data[2] | data[3]) == 0)) {
+			/* endpoint number is < 16, thus first byte is enough */
+			usb_target_t reset_target =
+			    { .address = target.address, data[4] };
+			fibril_mutex_lock(&instance->guard);
+			hash_table_apply(&instance->ep_table,
+			    node_toggle_reset_filtered, &reset_target);
+			fibril_mutex_unlock(&instance->guard);
+		}
+	break;
+
+	case 0x9: /* set configuration */
+	case 0x11: /* set interface */
+		/* target must be device */
+		if ((data[0] & 0xf) == 0) {
+			usb_target_t reset_target =
+			    { .address = target.address, 0 };
+			fibril_mutex_lock(&instance->guard);
+			hash_table_apply(&instance->ep_table,
+			    node_toggle_reset_filtered, &reset_target);
+			fibril_mutex_unlock(&instance->guard);
+		}
+	break;
+	}
+}
Index: uspace/lib/usbvirt/Makefile
===================================================================
--- uspace/lib/usbvirt/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbvirt/Makefile	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,46 @@
+#
+# Copyright (c) 2011 Vojtech Horky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+USPACE_PREFIX = ../..
+LIBRARY = libusbvirt
+
+EXTRA_CFLAGS = \
+	-I$(LIBDRV_PREFIX)/include \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBUSBDEV_PREFIX)/include \
+	-Iinclude
+
+SOURCES = \
+	src/ctrltransfer.c \
+	src/device.c \
+	src/ipc_dev.c \
+	src/ipc_hc.c \
+	src/stdreq.c \
+	src/transfer.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/lib/usbvirt/include/usbvirt/device.h
===================================================================
--- uspace/lib/usbvirt/include/usbvirt/device.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbvirt/include/usbvirt/device.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,219 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbvirt
+ * @{
+ */
+/** @file
+ * Virtual USB device.
+ */
+#ifndef LIBUSBVIRT_DEVICE_H_
+#define LIBUSBVIRT_DEVICE_H_
+
+#include <usb/usb.h>
+#include <usb/dev/request.h>
+
+/** Maximum number of endpoints supported by virtual USB. */
+#define USBVIRT_ENDPOINT_MAX 16
+
+typedef struct usbvirt_device usbvirt_device_t;
+
+/** Callback for data to device (OUT transaction).
+ *
+ * @param dev Virtual device to which the transaction belongs.
+ * @param endpoint Target endpoint number.
+ * @param transfer_type Transfer type.
+ * @param buffer Data buffer.
+ * @param buffer_size Size of the buffer in bytes.
+ * @return Error code.
+ */
+typedef int (*usbvirt_on_data_to_device_t)(usbvirt_device_t *dev,
+    usb_endpoint_t endpoint, usb_transfer_type_t transfer_type,
+    void *buffer, size_t buffer_size);
+
+/** Callback for data from device (IN transaction).
+ *
+ * @param dev Virtual device to which the transaction belongs.
+ * @param endpoint Target endpoint number.
+ * @param transfer_type Transfer type.
+ * @param buffer Data buffer to write answer to.
+ * @param buffer_size Size of the buffer in bytes.
+ * @param act_buffer_size Write here how many bytes were actually written.
+ * @return Error code.
+ */
+typedef int (*usbvirt_on_data_from_device_t)(usbvirt_device_t *dev,
+    usb_endpoint_t endpoint, usb_transfer_type_t transfer_type,
+    void *buffer, size_t buffer_size, size_t *act_buffer_size);
+
+/** Callback for control transfer on endpoint zero.
+ *
+ * Notice that size of the data buffer is expected to be read from the
+ * setup packet.
+ *
+ * @param dev Virtual device to which the transaction belongs.
+ * @param setup_packet Standard setup packet.
+ * @param data Data (might be NULL).
+ * @param act_data_size Size of returned data in bytes.
+ * @return Error code.
+ */
+typedef int (*usbvirt_on_control_t)(usbvirt_device_t *dev,
+    const usb_device_request_setup_packet_t *setup_packet,
+    uint8_t *data, size_t *act_data_size);
+
+/** Callback for control request on a virtual USB device.
+ *
+ * See usbvirt_control_reply_helper() for simple way of answering
+ * control read requests.
+ */
+typedef struct {
+	/** Request direction (in or out). */
+	usb_direction_t req_direction;
+	/** Request recipient (device, interface or endpoint). */
+	usb_request_recipient_t req_recipient;
+	/** Request type (standard, class or vendor). */
+	usb_request_type_t req_type;
+	/** Actual request code. */
+	uint8_t request;
+	/** Request handler name for debugging purposes. */
+	const char *name;
+	/** Callback to be executed on matching request. */
+	usbvirt_on_control_t callback;
+} usbvirt_control_request_handler_t;
+
+/** Extra configuration data for GET_CONFIGURATION request. */
+typedef struct {
+	/** Actual data. */
+	uint8_t *data;
+	/** Data length. */
+	size_t length;
+} usbvirt_device_configuration_extras_t;
+
+/** Single device configuration. */
+typedef struct {
+	/** Standard configuration descriptor. */
+	usb_standard_configuration_descriptor_t *descriptor;
+	/** Array of extra data. */
+	usbvirt_device_configuration_extras_t *extra;
+	/** Length of @c extra array. */
+	size_t extra_count;
+} usbvirt_device_configuration_t;
+
+/** Standard USB descriptors for virtual device. */
+typedef struct {
+	/** Standard device descriptor.
+	 * There is always only one such descriptor for the device.
+	 */
+	usb_standard_device_descriptor_t *device;
+
+	/** Configurations. */
+	usbvirt_device_configuration_t *configuration;
+	/** Number of configurations. */
+	size_t configuration_count;
+} usbvirt_descriptors_t;
+
+/** Possible states of virtual USB device.
+ * Notice that these are not 1:1 mappings to those in USB specification.
+ */
+typedef enum {
+	/** Default state, device listens at default address. */
+	USBVIRT_STATE_DEFAULT,
+	/** Device has non-default address assigned. */
+	USBVIRT_STATE_ADDRESS,
+	/** Device is configured. */
+	USBVIRT_STATE_CONFIGURED
+} usbvirt_device_state_t;
+
+/** Ops structure for virtual USB device. */
+typedef struct {
+	/** Callbacks for data to device.
+	 * Index zero is ignored.
+	 */
+	usbvirt_on_data_to_device_t data_out[USBVIRT_ENDPOINT_MAX];
+	/** Callbacks for data from device.
+	 * Index zero is ignored.
+	 */
+	usbvirt_on_data_from_device_t data_in[USBVIRT_ENDPOINT_MAX];
+	/** Array of control handlers.
+	 * Last handler is expected to have the @c callback field set to NULL
+	 */
+	usbvirt_control_request_handler_t *control;
+	/** Callback when device changes state.
+	 *
+	 * The value of @c state attribute of @p dev device is not
+	 * defined during call of this function.
+	 *
+	 * @param dev The virtual USB device.
+	 * @param old_state Old device state.
+	 * @param new_state New device state.
+	 */
+	void (*state_changed)(usbvirt_device_t *dev,
+	    usbvirt_device_state_t old_state, usbvirt_device_state_t new_state);
+} usbvirt_device_ops_t;
+
+/** Virtual USB device. */
+struct usbvirt_device {
+	/** Name for debugging purposes. */
+	const char *name;
+	/** Custom device data. */
+	void *device_data;
+	/** Device ops. */
+	usbvirt_device_ops_t *ops;
+	/** Device descriptors. */
+	usbvirt_descriptors_t *descriptors;
+	/** Current device address.
+	 * You shall treat this field as read only in your code.
+	 */
+	usb_address_t address;
+	/** Current device state.
+	 * You shall treat this field as read only in your code.
+	 */
+	usbvirt_device_state_t state;
+	/** Phone to the host controller.
+	 * You shall treat this field as read only in your code.
+	 */
+	int vhc_phone;
+};
+
+int usbvirt_device_plug(usbvirt_device_t *, const char *);
+void usbvirt_device_unplug(usbvirt_device_t *);
+
+void usbvirt_control_reply_helper(const usb_device_request_setup_packet_t *,
+    uint8_t *, size_t *, void *, size_t);
+
+int usbvirt_control_write(usbvirt_device_t *, void *, size_t, void *, size_t);
+int usbvirt_control_read(usbvirt_device_t *, void *, size_t, void *, size_t, size_t *);
+int usbvirt_data_out(usbvirt_device_t *, usb_transfer_type_t, usb_endpoint_t,
+    void *, size_t);
+int usbvirt_data_in(usbvirt_device_t *, usb_transfer_type_t, usb_endpoint_t,
+    void *, size_t, size_t *);
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbvirt/include/usbvirt/ipc.h
===================================================================
--- uspace/lib/usbvirt/include/usbvirt/ipc.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbvirt/include/usbvirt/ipc.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbvirt
+ * @{
+ */
+/** @file
+ * IPC wrappers for virtual USB.
+ */
+#ifndef LIBUSBVIRT_IPC_H_
+#define LIBUSBVIRT_IPC_H_
+
+#include <ipc/common.h>
+#include <usb/usb.h>
+#include <bool.h>
+#include <usbvirt/device.h>
+
+/** IPC methods communication between host controller and virtual device. */
+typedef enum {
+	IPC_M_USBVIRT_GET_NAME = IPC_FIRST_USER_METHOD + 80,
+	IPC_M_USBVIRT_CONTROL_READ,
+	IPC_M_USBVIRT_CONTROL_WRITE,
+	IPC_M_USBVIRT_INTERRUPT_IN,
+	IPC_M_USBVIRT_INTERRUPT_OUT,
+	IPC_M_USBVIRT_BULK_IN,
+	IPC_M_USBVIRT_BULK_OUT
+} usbvirt_hc_to_device_method_t;
+
+int usbvirt_ipc_send_control_read(int, void *, size_t,
+    void *, size_t, size_t *);
+int usbvirt_ipc_send_control_write(int, void *, size_t,
+    void *, size_t);
+int usbvirt_ipc_send_data_in(int, usb_endpoint_t, usb_transfer_type_t,
+    void *, size_t, size_t *);
+int usbvirt_ipc_send_data_out(int, usb_endpoint_t, usb_transfer_type_t,
+    void *, size_t);
+
+bool usbvirt_is_usbvirt_method(sysarg_t);
+bool usbvirt_ipc_handle_call(usbvirt_device_t *, ipc_callid_t, ipc_call_t *);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbvirt/src/ctrltransfer.c
===================================================================
--- uspace/lib/usbvirt/src/ctrltransfer.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbvirt/src/ctrltransfer.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbvirt
+ * @{
+ */
+/** @file
+ * Control transfer handling.
+ */
+#include "private.h"
+#include <usb/dev/request.h>
+#include <usb/debug.h>
+#include <assert.h>
+#include <errno.h>
+
+/** Find and execute control transfer handler for virtual USB device.
+ *
+ * @param dev Target virtual device.
+ * @param control_handlers Array of control request handlers.
+ * @param setup Setup packet.
+ * @param data Extra data.
+ * @param data_sent_size Size of extra data in bytes.
+ * @return Error code.
+ * @retval EFORWARD No suitable handler found.
+ */
+int process_control_transfer(usbvirt_device_t *dev,
+    usbvirt_control_request_handler_t *control_handlers,
+    usb_device_request_setup_packet_t *setup,
+    uint8_t *data, size_t *data_sent_size)
+{
+	assert(dev);
+	assert(setup);
+
+	if (control_handlers == NULL) {
+		return EFORWARD;
+	}
+
+	usb_direction_t direction = setup->request_type & 128 ?
+	    USB_DIRECTION_IN : USB_DIRECTION_OUT;
+	usb_request_recipient_t req_recipient = setup->request_type & 31;
+	usb_request_type_t req_type = (setup->request_type >> 5) & 3;
+
+	usbvirt_control_request_handler_t *handler = control_handlers;
+	while (handler->callback != NULL) {
+		if (handler->req_direction != direction) {
+			goto next;
+		}
+		if (handler->req_recipient != req_recipient) {
+			goto next;
+		}
+		if (handler->req_type != req_type) {
+			goto next;
+		}
+		if (handler->request != setup->request) {
+			goto next;
+		}
+
+		usb_log_debug("Control transfer: %s(%s)\n", handler->name,
+		    usb_debug_str_buffer((uint8_t*) setup, sizeof(*setup), 0));
+		int rc = handler->callback(dev, setup, data, data_sent_size);
+		if (rc == EFORWARD) {
+			goto next;
+		}
+
+		return rc;
+
+next:
+		handler++;
+	}
+
+	return EFORWARD;
+}
+
+
+/**
+ * @}
+ */
Index: uspace/lib/usbvirt/src/device.c
===================================================================
--- uspace/lib/usbvirt/src/device.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbvirt/src/device.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbvirt
+ * @{
+ */
+/** @file
+ * Virtual USB device main routines.
+ */
+#include <errno.h>
+#include <str.h>
+#include <stdio.h>
+#include <assert.h>
+#include <async.h>
+#include <devman.h>
+#include <usbvirt/device.h>
+#include <usbvirt/ipc.h>
+
+#include <usb/debug.h>
+
+/** Current device. */
+static usbvirt_device_t *DEV = NULL;
+
+/** Main IPC call handling from virtual host controller.
+ *
+ * @param iid Caller identification.
+ * @param icall Initial incoming call.
+ */
+static void callback_connection(ipc_callid_t iid, ipc_call_t *icall)
+{
+	assert(DEV != NULL);
+
+	async_answer_0(iid, EOK);
+
+	while (true) {
+		ipc_callid_t callid;
+		ipc_call_t call;
+
+		callid = async_get_call(&call);
+		bool processed = usbvirt_ipc_handle_call(DEV, callid, &call);
+		if (!processed) {
+			switch (IPC_GET_IMETHOD(call)) {
+				case IPC_M_PHONE_HUNGUP:
+					async_answer_0(callid, EOK);
+					return;
+				default:
+					async_answer_0(callid, EINVAL);
+					break;
+			}
+		}
+	}
+}
+
+/** Connect the device to the virtual host controller.
+ *
+ * @param dev The virtual device to be (virtually) plugged in.
+ * @param vhc_path Devman path to the virtual host controller.
+ * @return Error code.
+ */
+int usbvirt_device_plug(usbvirt_device_t *dev, const char *vhc_path)
+{
+	int rc;
+	devman_handle_t handle;
+
+	if (DEV != NULL) {
+		return ELIMIT;
+	}
+
+	rc = devman_device_get_handle(vhc_path, &handle, 0);
+	if (rc != EOK) {
+		return rc;
+	}
+
+	int hcd_phone = devman_device_connect(handle, 0);
+
+	if (hcd_phone < 0) {
+		return hcd_phone;
+	}
+
+	DEV = dev;
+	dev->vhc_phone = hcd_phone;
+
+	rc = async_connect_to_me(hcd_phone, 0, 0, 0, callback_connection);
+	if (rc != EOK) {
+		DEV = NULL;
+	}
+
+	return rc;
+}
+
+/** Disconnect the device from virtual host controller.
+ *
+ * @param dev Device to be disconnected.
+ */
+void usbvirt_device_unplug(usbvirt_device_t *dev)
+{
+	async_hangup(dev->vhc_phone);
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbvirt/src/ipc_dev.c
===================================================================
--- uspace/lib/usbvirt/src/ipc_dev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbvirt/src/ipc_dev.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,297 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbvirt
+ * @{
+ */
+/** @file
+ * IPC wrappers, device side.
+ */
+#include <errno.h>
+#include <str.h>
+#include <stdio.h>
+#include <assert.h>
+#include <async.h>
+#include <devman.h>
+#include <usbvirt/device.h>
+#include <usbvirt/ipc.h>
+#include <usb/debug.h>
+
+/** Handle VHC request for device name.
+ *
+ * @param dev Target virtual device.
+ * @param iid Caller id.
+ * @param icall The call with the request.
+ */
+static void ipc_get_name(usbvirt_device_t *dev,
+    ipc_callid_t iid, ipc_call_t *icall)
+{
+	if (dev->name == NULL) {
+		async_answer_0(iid, ENOENT);
+	}
+
+	size_t size = str_size(dev->name);
+
+	ipc_callid_t callid;
+	size_t accepted_size;
+	if (!async_data_read_receive(&callid, &accepted_size)) {
+		async_answer_0(iid, EINVAL);
+		return;
+	}
+
+	if (accepted_size > size) {
+		accepted_size = size;
+	}
+	async_data_read_finalize(callid, dev->name, accepted_size);
+
+	async_answer_1(iid, EOK, accepted_size);
+}
+
+/** Handle VHC request for control read from the device.
+ *
+ * @param dev Target virtual device.
+ * @param iid Caller id.
+ * @param icall The call with the request.
+ */
+static void ipc_control_read(usbvirt_device_t *dev,
+    ipc_callid_t iid, ipc_call_t *icall)
+{
+	int rc;
+
+	void *setup_packet = NULL;
+	size_t setup_packet_len = 0;
+	size_t data_len = 0;
+
+	rc = async_data_write_accept(&setup_packet, false,
+	    1, 1024, 0, &setup_packet_len);
+	if (rc != EOK) {
+		async_answer_0(iid, rc);
+		return;
+	}
+
+	ipc_callid_t data_callid;
+	if (!async_data_read_receive(&data_callid, &data_len)) {
+		async_answer_0(iid, EPARTY);
+		free(setup_packet);
+		return;
+	}
+
+	void *buffer = malloc(data_len);
+	if (buffer == NULL) {
+		async_answer_0(iid, ENOMEM);
+		free(setup_packet);
+		return;
+	}
+
+	size_t actual_len;
+	rc = usbvirt_control_read(dev, setup_packet, setup_packet_len,
+	    buffer, data_len, &actual_len);
+
+	if (rc != EOK) {
+		async_answer_0(data_callid, rc);
+		async_answer_0(iid, rc);
+		free(setup_packet);
+		free(buffer);
+		return;
+	}
+
+	async_data_read_finalize(data_callid, buffer, actual_len);
+	async_answer_0(iid, EOK);
+
+	free(setup_packet);
+	free(buffer);
+}
+
+/** Handle VHC request for control write to the device.
+ *
+ * @param dev Target virtual device.
+ * @param iid Caller id.
+ * @param icall The call with the request.
+ */
+static void ipc_control_write(usbvirt_device_t *dev,
+    ipc_callid_t iid, ipc_call_t *icall)
+{
+	size_t data_buffer_len = IPC_GET_ARG1(*icall);
+	int rc;
+
+	void *setup_packet = NULL;
+	void *data_buffer = NULL;
+	size_t setup_packet_len = 0;
+
+	rc = async_data_write_accept(&setup_packet, false,
+	    1, 0, 0, &setup_packet_len);
+	if (rc != EOK) {
+		async_answer_0(iid, rc);
+		return;
+	}
+
+	if (data_buffer_len > 0) {
+		rc = async_data_write_accept(&data_buffer, false,
+		    1, 0, 0, &data_buffer_len);
+		if (rc != EOK) {
+			async_answer_0(iid, rc);
+			free(setup_packet);
+			return;
+		}
+	}
+
+	rc = usbvirt_control_write(dev, setup_packet, setup_packet_len,
+	    data_buffer, data_buffer_len);
+
+	async_answer_0(iid, rc);
+
+	free(setup_packet);
+	if (data_buffer != NULL) {
+		free(data_buffer);
+	}
+}
+
+/** Handle VHC request for data read from the device (in transfer).
+ *
+ * @param dev Target virtual device.
+ * @param iid Caller id.
+ * @param icall The call with the request.
+ */
+static void ipc_data_in(usbvirt_device_t *dev,
+    usb_transfer_type_t transfer_type,
+    ipc_callid_t iid, ipc_call_t *icall)
+{
+	usb_endpoint_t endpoint = IPC_GET_ARG1(*icall);
+
+	int rc;
+
+	size_t data_len = 0;
+	ipc_callid_t data_callid;
+	if (!async_data_read_receive(&data_callid, &data_len)) {
+		async_answer_0(iid, EPARTY);
+		return;
+	}
+
+	void *buffer = malloc(data_len);
+	if (buffer == NULL) {
+		async_answer_0(iid, ENOMEM);
+		return;
+	}
+
+	size_t actual_len;
+	rc = usbvirt_data_in(dev, transfer_type, endpoint,
+	    buffer, data_len, &actual_len);
+
+	if (rc != EOK) {
+		async_answer_0(data_callid, rc);
+		async_answer_0(iid, rc);
+		free(buffer);
+		return;
+	}
+
+	async_data_read_finalize(data_callid, buffer, actual_len);
+	async_answer_0(iid, EOK);
+
+	free(buffer);
+}
+
+/** Handle VHC request for data write to the device (out transfer).
+ *
+ * @param dev Target virtual device.
+ * @param iid Caller id.
+ * @param icall The call with the request.
+ */
+static void ipc_data_out(usbvirt_device_t *dev,
+    usb_transfer_type_t transfer_type,
+    ipc_callid_t iid, ipc_call_t *icall)
+{
+	usb_endpoint_t endpoint = IPC_GET_ARG1(*icall);
+
+	void *data_buffer = NULL;
+	size_t data_buffer_size = 0;
+
+	int rc = async_data_write_accept(&data_buffer, false,
+	    1, 0, 0, &data_buffer_size);
+	if (rc != EOK) {
+		async_answer_0(iid, rc);
+		return;
+	}
+
+	rc = usbvirt_data_out(dev, transfer_type, endpoint,
+	    data_buffer, data_buffer_size);
+
+	async_answer_0(iid, rc);
+
+	free(data_buffer);
+}
+
+/** Handle incoming IPC call for virtual USB device.
+ *
+ * @param dev Target USB device.
+ * @param callid Caller id.
+ * @param call Incoming call.
+ * @return Whether the call was handled.
+ */
+bool usbvirt_ipc_handle_call(usbvirt_device_t *dev,
+    ipc_callid_t callid, ipc_call_t *call)
+{
+	switch (IPC_GET_IMETHOD(*call)) {
+	case IPC_M_USBVIRT_GET_NAME:
+		ipc_get_name(dev, callid, call);
+		break;
+
+	case IPC_M_USBVIRT_CONTROL_READ:
+		ipc_control_read(dev, callid, call);
+		break;
+
+	case IPC_M_USBVIRT_CONTROL_WRITE:
+		ipc_control_write(dev, callid, call);
+		break;
+
+	case IPC_M_USBVIRT_INTERRUPT_IN:
+		ipc_data_in(dev, USB_TRANSFER_INTERRUPT, callid, call);
+		break;
+
+	case IPC_M_USBVIRT_BULK_IN:
+		ipc_data_in(dev, USB_TRANSFER_BULK, callid, call);
+		break;
+
+	case IPC_M_USBVIRT_INTERRUPT_OUT:
+		ipc_data_out(dev, USB_TRANSFER_INTERRUPT, callid, call);
+		break;
+
+	case IPC_M_USBVIRT_BULK_OUT:
+		ipc_data_out(dev, USB_TRANSFER_BULK, callid, call);
+		break;
+
+
+	default:
+		return false;
+	}
+
+	return true;
+}
+
+/**
+ * @}
+ */
Index: uspace/lib/usbvirt/src/ipc_hc.c
===================================================================
--- uspace/lib/usbvirt/src/ipc_hc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbvirt/src/ipc_hc.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,298 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbvirt
+ * @{
+ */
+/** @file
+ * IPC wrappers, host controller side.
+ */
+#include <errno.h>
+#include <str.h>
+#include <stdio.h>
+#include <assert.h>
+#include <async.h>
+#include <devman.h>
+#include <usbvirt/device.h>
+#include <usbvirt/ipc.h>
+#include <usb/debug.h>
+
+/** Send control read transfer to virtual USB device.
+ *
+ * @param phone IPC phone to the virtual device.
+ * @param ep Target endpoint number.
+ * @param setup_buffer Setup buffer.
+ * @param setup_buffer_size Setup buffer size in bytes.
+ * @param data_buffer Data buffer (DATA stage of control transfer).
+ * @param data_buffer_size Size of data buffer in bytes.
+ * @param data_transfered_size Number of actually transferred bytes.
+ * @return Error code.
+ */
+int usbvirt_ipc_send_control_read(int phone,
+    void *setup_buffer, size_t setup_buffer_size,
+    void *data_buffer, size_t data_buffer_size, size_t *data_transfered_size)
+{
+	if (phone < 0) {
+		return EINVAL;
+	}
+	if ((setup_buffer == NULL) || (setup_buffer_size == 0)) {
+		return EINVAL;
+	}
+	if ((data_buffer == NULL) || (data_buffer_size == 0)) {
+		return EINVAL;
+	}
+
+	aid_t opening_request = async_send_0(phone,
+	    IPC_M_USBVIRT_CONTROL_READ, NULL);
+	if (opening_request == 0) {
+		return ENOMEM;
+	}
+
+	int rc = async_data_write_start(phone,
+	    setup_buffer, setup_buffer_size);
+	if (rc != EOK) {
+		async_wait_for(opening_request, NULL);
+		return rc;
+	}
+
+	ipc_call_t data_request_call;
+	aid_t data_request = async_data_read(phone,
+	    data_buffer, data_buffer_size,
+	    &data_request_call);
+
+	if (data_request == 0) {
+		async_wait_for(opening_request, NULL);
+		return ENOMEM;
+	}
+
+	sysarg_t data_request_rc;
+	sysarg_t opening_request_rc;
+	async_wait_for(data_request, &data_request_rc);
+	async_wait_for(opening_request, &opening_request_rc);
+
+	if (data_request_rc != EOK) {
+		/* Prefer the return code of the opening request. */
+		if (opening_request_rc != EOK) {
+			return (int) opening_request_rc;
+		} else {
+			return (int) data_request_rc;
+		}
+	}
+	if (opening_request_rc != EOK) {
+		return (int) opening_request_rc;
+	}
+
+	if (data_transfered_size != NULL) {
+		*data_transfered_size = IPC_GET_ARG2(data_request_call);
+	}
+
+	return EOK;
+}
+
+/** Send control write transfer to virtual USB device.
+ *
+ * @param phone IPC phone to the virtual device.
+ * @param ep Target endpoint number.
+ * @param setup_buffer Setup buffer.
+ * @param setup_buffer_size Setup buffer size in bytes.
+ * @param data_buffer Data buffer (DATA stage of control transfer).
+ * @param data_buffer_size Size of data buffer in bytes.
+ * @return Error code.
+ */
+int usbvirt_ipc_send_control_write(int phone,
+    void *setup_buffer, size_t setup_buffer_size,
+    void *data_buffer, size_t data_buffer_size)
+{
+	if (phone < 0) {
+		return EINVAL;
+	}
+	if ((setup_buffer == NULL) || (setup_buffer_size == 0)) {
+		return EINVAL;
+	}
+	if ((data_buffer_size > 0) && (data_buffer == NULL)) {
+		return EINVAL;
+	}
+
+	aid_t opening_request = async_send_1(phone,
+	    IPC_M_USBVIRT_CONTROL_WRITE, data_buffer_size,  NULL);
+	if (opening_request == 0) {
+		return ENOMEM;
+	}
+
+	int rc = async_data_write_start(phone,
+	    setup_buffer, setup_buffer_size);
+	if (rc != EOK) {
+		async_wait_for(opening_request, NULL);
+		return rc;
+	}
+
+	if (data_buffer_size > 0) {
+		rc = async_data_write_start(phone,
+		    data_buffer, data_buffer_size);
+
+		if (rc != EOK) {
+			async_wait_for(opening_request, NULL);
+			return rc;
+		}
+	}
+
+	sysarg_t opening_request_rc;
+	async_wait_for(opening_request, &opening_request_rc);
+
+	return (int) opening_request_rc;
+}
+
+/** Request data transfer from virtual USB device.
+ *
+ * @param phone IPC phone to the virtual device.
+ * @param ep Target endpoint number.
+ * @param tr_type Transfer type (interrupt or bulk).
+ * @param data Data buffer.
+ * @param data_size Size of the data buffer in bytes.
+ * @param act_size Number of actually returned bytes.
+ * @return Error code.
+ */
+int usbvirt_ipc_send_data_in(int phone, usb_endpoint_t ep,
+    usb_transfer_type_t tr_type, void *data, size_t data_size, size_t *act_size)
+{
+	if (phone < 0) {
+		return EINVAL;
+	}
+	usbvirt_hc_to_device_method_t method;
+	switch (tr_type) {
+	case USB_TRANSFER_INTERRUPT:
+		method = IPC_M_USBVIRT_INTERRUPT_IN;
+		break;
+	case USB_TRANSFER_BULK:
+		method = IPC_M_USBVIRT_BULK_IN;
+		break;
+	default:
+		return EINVAL;
+	}
+	if ((ep <= 0) || (ep >= USBVIRT_ENDPOINT_MAX)) {
+		return EINVAL;
+	}
+	if ((data == NULL) || (data_size == 0)) {
+		return EINVAL;
+	}
+
+
+	aid_t opening_request = async_send_2(phone, method, ep, tr_type, NULL);
+	if (opening_request == 0) {
+		return ENOMEM;
+	}
+
+
+	ipc_call_t data_request_call;
+	aid_t data_request = async_data_read(phone,
+	    data, data_size,  &data_request_call);
+
+	if (data_request == 0) {
+		async_wait_for(opening_request, NULL);
+		return ENOMEM;
+	}
+
+	sysarg_t data_request_rc;
+	sysarg_t opening_request_rc;
+	async_wait_for(data_request, &data_request_rc);
+	async_wait_for(opening_request, &opening_request_rc);
+
+	if (data_request_rc != EOK) {
+		/* Prefer the return code of the opening request. */
+		if (opening_request_rc != EOK) {
+			return (int) opening_request_rc;
+		} else {
+			return (int) data_request_rc;
+		}
+	}
+	if (opening_request_rc != EOK) {
+		return (int) opening_request_rc;
+	}
+
+	if (act_size != NULL) {
+		*act_size = IPC_GET_ARG2(data_request_call);
+	}
+
+	return EOK;
+}
+
+/** Send data to virtual USB device.
+ *
+ * @param phone IPC phone to the virtual device.
+ * @param ep Target endpoint number.
+ * @param tr_type Transfer type (interrupt or bulk).
+ * @param data Data buffer.
+ * @param data_size Size of the data buffer in bytes.
+ * @return Error code.
+ */
+int usbvirt_ipc_send_data_out(int phone, usb_endpoint_t ep,
+    usb_transfer_type_t tr_type, void *data, size_t data_size)
+{
+	if (phone < 0) {
+		return EINVAL;
+	}
+	usbvirt_hc_to_device_method_t method;
+	switch (tr_type) {
+	case USB_TRANSFER_INTERRUPT:
+		method = IPC_M_USBVIRT_INTERRUPT_OUT;
+		break;
+	case USB_TRANSFER_BULK:
+		method = IPC_M_USBVIRT_BULK_OUT;
+		break;
+	default:
+		return EINVAL;
+	}
+	if ((ep <= 0) || (ep >= USBVIRT_ENDPOINT_MAX)) {
+		return EINVAL;
+	}
+	if ((data == NULL) || (data_size == 0)) {
+		return EINVAL;
+	}
+
+	aid_t opening_request = async_send_1(phone, method, ep, NULL);
+	if (opening_request == 0) {
+		return ENOMEM;
+	}
+
+	int rc = async_data_write_start(phone,
+	    data, data_size);
+	if (rc != EOK) {
+		async_wait_for(opening_request, NULL);
+		return rc;
+	}
+
+	sysarg_t opening_request_rc;
+	async_wait_for(opening_request, &opening_request_rc);
+
+	return (int) opening_request_rc;
+}
+
+
+/**
+ * @}
+ */
Index: uspace/lib/usbvirt/src/private.h
===================================================================
--- uspace/lib/usbvirt/src/private.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbvirt/src/private.h	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbvirt
+ * @{
+ */
+/** @file
+ * Private definitions.
+ */
+#ifndef USBVIRT_PRIVATE_H_
+#define USBVIRT_PRIVATE_H_
+
+#include <usbvirt/device.h>
+
+int process_control_transfer(usbvirt_device_t *,
+    usbvirt_control_request_handler_t *,
+    usb_device_request_setup_packet_t *,
+    uint8_t *, size_t *);
+
+extern usbvirt_control_request_handler_t library_handlers[];
+
+#endif
+/**
+ * @}
+ */
Index: uspace/lib/usbvirt/src/stdreq.c
===================================================================
--- uspace/lib/usbvirt/src/stdreq.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbvirt/src/stdreq.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,223 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbvirt
+ * @{
+ */
+/** @file
+ * Standard control request handlers.
+ */
+#include "private.h"
+#include <usb/dev/request.h>
+#include <assert.h>
+#include <errno.h>
+
+/** Helper for replying to control read transfer from virtual USB device.
+ *
+ * This function takes care of copying data to answer buffer taking care
+ * of buffer sizes properly.
+ *
+ * @param setup_packet The setup packet.
+ * @param data Data buffer to write to.
+ * @param act_size Where to write actual size of returned data.
+ * @param actual_data Data to be returned.
+ * @param actual_data_size Size of answer data (@p actual_data) in bytes.
+ */
+void usbvirt_control_reply_helper(const usb_device_request_setup_packet_t *setup_packet,
+    uint8_t *data, size_t *act_size,
+    void *actual_data, size_t actual_data_size)
+{
+	size_t expected_size = setup_packet->length;
+	if (expected_size < actual_data_size) {
+		actual_data_size = expected_size;
+	}
+
+	memcpy(data, actual_data, actual_data_size);
+
+	if (act_size != NULL) {
+		*act_size = actual_data_size;
+	}
+}
+
+/** GET_DESCRIPTOR handler. */
+static int req_get_descriptor(usbvirt_device_t *device,
+    const usb_device_request_setup_packet_t *setup_packet, uint8_t *data, size_t *act_size)
+{
+	uint8_t type = setup_packet->value_high;
+	uint8_t index = setup_packet->value_low;
+
+	/*
+	 * Standard device descriptor.
+	 */
+	if ((type == USB_DESCTYPE_DEVICE) && (index == 0)) {
+		if (device->descriptors && device->descriptors->device) {
+			usbvirt_control_reply_helper(setup_packet, data, act_size,
+			    device->descriptors->device,
+			    device->descriptors->device->length);
+			return EOK;
+		} else {
+			return EFORWARD;
+		}
+	}
+
+	/*
+	 * Configuration descriptor together with interface, endpoint and
+	 * class-specific descriptors.
+	 */
+	if (type == USB_DESCTYPE_CONFIGURATION) {
+		if (!device->descriptors) {
+			return EFORWARD;
+		}
+		if (index >= device->descriptors->configuration_count) {
+			return EFORWARD;
+		}
+		/* Copy the data. */
+		usbvirt_device_configuration_t *config = &device->descriptors
+		    ->configuration[index];
+		uint8_t *all_data = malloc(config->descriptor->total_length);
+		if (all_data == NULL) {
+			return ENOMEM;
+		}
+
+		uint8_t *ptr = all_data;
+		memcpy(ptr, config->descriptor, config->descriptor->length);
+		ptr += config->descriptor->length;
+		size_t i;
+		for (i = 0; i < config->extra_count; i++) {
+			usbvirt_device_configuration_extras_t *extra
+			    = &config->extra[i];
+			memcpy(ptr, extra->data, extra->length);
+			ptr += extra->length;
+		}
+
+		usbvirt_control_reply_helper(setup_packet, data, act_size,
+		    all_data, config->descriptor->total_length);
+
+		free(all_data);
+
+		return EOK;
+	}
+
+	return EFORWARD;
+}
+
+static int req_set_address(usbvirt_device_t *device,
+    const usb_device_request_setup_packet_t *setup_packet, uint8_t *data, size_t *act_size)
+{
+	uint16_t new_address = setup_packet->value;
+	uint16_t zero1 = setup_packet->index;
+	uint16_t zero2 = setup_packet->length;
+
+	if ((zero1 != 0) || (zero2 != 0)) {
+		return EINVAL;
+	}
+
+	if (new_address > 127) {
+		return EINVAL;
+	}
+
+	device->address = new_address;
+
+	return EOK;
+}
+
+static int req_set_configuration(usbvirt_device_t *device,
+    const usb_device_request_setup_packet_t *setup_packet, uint8_t *data, size_t *act_size)
+{
+	uint16_t configuration_value = setup_packet->value;
+	uint16_t zero1 = setup_packet->index;
+	uint16_t zero2 = setup_packet->length;
+
+	if ((zero1 != 0) || (zero2 != 0)) {
+		return EINVAL;
+	}
+
+	/*
+	 * Configuration value is 1 byte information.
+	 */
+	if (configuration_value > 255) {
+		return EINVAL;
+	}
+
+	/*
+	 * Do nothing when in default state. According to specification,
+	 * this is not specified.
+	 */
+	if (device->state == USBVIRT_STATE_DEFAULT) {
+		return EOK;
+	}
+
+	usbvirt_device_state_t new_state;
+	if (configuration_value == 0) {
+		new_state = USBVIRT_STATE_ADDRESS;
+	} else {
+		// FIXME: check that this configuration exists
+		new_state = USBVIRT_STATE_CONFIGURED;
+	}
+
+	if (device->ops && device->ops->state_changed) {
+		device->ops->state_changed(device, device->state, new_state);
+	}
+	device->state = new_state;
+
+	return EOK;
+}
+
+/** Standard request handlers. */
+usbvirt_control_request_handler_t library_handlers[] = {
+	{
+		.req_direction = USB_DIRECTION_OUT,
+		.req_recipient = USB_REQUEST_RECIPIENT_DEVICE,
+		.req_type = USB_REQUEST_TYPE_STANDARD,
+		.request = USB_DEVREQ_SET_ADDRESS,
+		.name = "SetAddress",
+		.callback = req_set_address
+	},
+	{
+		.req_direction = USB_DIRECTION_IN,
+		.req_recipient = USB_REQUEST_RECIPIENT_DEVICE,
+		.req_type = USB_REQUEST_TYPE_STANDARD,
+		.request = USB_DEVREQ_GET_DESCRIPTOR,
+		.name = "GetDescriptor",
+		.callback = req_get_descriptor
+	},
+	{
+		.req_direction = USB_DIRECTION_OUT,
+		.req_recipient = USB_REQUEST_RECIPIENT_DEVICE,
+		.req_type = USB_REQUEST_TYPE_STANDARD,
+		.request = USB_DEVREQ_SET_CONFIGURATION,
+		.name = "SetConfiguration",
+		.callback = req_set_configuration
+	},
+
+	{ .callback = NULL }
+};
+
+/**
+ * @}
+ */
Index: uspace/lib/usbvirt/src/transfer.c
===================================================================
--- uspace/lib/usbvirt/src/transfer.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
+++ uspace/lib/usbvirt/src/transfer.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -0,0 +1,190 @@
+/*
+ * Copyright (c) 2011 Vojtech Horky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libusbvirt
+ * @{
+ */
+/** @file
+ * Transfer handling.
+ */
+#include <usbvirt/device.h>
+#include <usb/debug.h>
+#include <errno.h>
+#include <assert.h>
+#include "private.h"
+
+/** Process a control transfer to the virtual USB device.
+ *
+ * @param dev Target device.
+ * @param setup Setup packet data.
+ * @param setup_size Size of setup packet.
+ * @param data Extra data (DATA stage).
+ * @param data_size Size of extra data in bytes.
+ * @param data_size_sent Number of actually send bytes during the transfer
+ *	(only used for READ transfers).
+ * @return Error code.
+ */
+static int usbvirt_control_transfer(usbvirt_device_t *dev,
+    void *setup, size_t setup_size,
+    void *data, size_t data_size, size_t *data_size_sent)
+{
+	assert(dev);
+	assert(dev->ops);
+
+	if (setup_size != sizeof(usb_device_request_setup_packet_t)) {
+		return ESTALL;
+	}
+	usb_device_request_setup_packet_t *setup_packet = setup;
+	if (data_size != setup_packet->length) {
+		return ESTALL;
+	}
+
+	int rc;
+
+	/* Run user handler first. */
+	rc = process_control_transfer(dev, dev->ops->control,
+	    setup_packet, data, data_size_sent);
+	if (rc != EFORWARD) {
+		return rc;
+	}
+
+	/* Run the library handlers afterwards. */
+	rc = process_control_transfer(dev, library_handlers,
+	    setup_packet, data, data_size_sent);
+
+	if (rc == EFORWARD) {
+		usb_log_warning("Control transfer {%s (%s)} not handled.\n",
+		    usb_debug_str_buffer(setup, setup_size, 10),
+		    setup_packet->request_type & 0x80
+		    ? "IN" : usb_debug_str_buffer(data, data_size, 10));
+		rc = EBADCHECKSUM;
+	}
+
+	return rc;
+}
+
+/** Issue a control write transfer to virtual USB device.
+ *
+ * @see usbvirt_control_transfer
+ *
+ * @param dev Target virtual device.
+ * @param setup Setup data.
+ * @param setup_size Size of setup packet.
+ * @param data Extra data (DATA stage).
+ * @param data_size Size of extra data buffer in bytes.
+ * @return Error code.
+ */
+int usbvirt_control_write(usbvirt_device_t *dev, void *setup, size_t setup_size,
+    void *data, size_t data_size)
+{
+	return usbvirt_control_transfer(dev, setup, setup_size,
+	    data, data_size, NULL);
+}
+
+/** Issue a control read transfer to virtual USB device.
+ *
+ * @see usbvirt_control_transfer
+ *
+ * @param dev Target virtual device.
+ * @param setup Setup data.
+ * @param setup_size Size of setup packet.
+ * @param data Extra data (DATA stage).
+ * @param data_size Size of extra data buffer in bytes.
+ * @param data_size_sent Number of actually send bytes during the transfer.
+ * @return Error code.
+ */
+int usbvirt_control_read(usbvirt_device_t *dev, void *setup, size_t setup_size,
+    void *data, size_t data_size, size_t *data_size_sent)
+{
+	return usbvirt_control_transfer(dev, setup, setup_size,
+	    data, data_size, data_size_sent);
+}
+
+/** Send data to virtual USB device.
+ *
+ * @param dev Target virtual device.
+ * @param transf_type Transfer type (interrupt, bulk).
+ * @param endpoint Endpoint number.
+ * @param data Data sent from the driver to the device.
+ * @param data_size Size of the @p data buffer in bytes.
+ * @return Error code.
+ */
+int usbvirt_data_out(usbvirt_device_t *dev, usb_transfer_type_t transf_type,
+    usb_endpoint_t endpoint, void *data, size_t data_size)
+{
+	if ((endpoint <= 0) || (endpoint >= USBVIRT_ENDPOINT_MAX)) {
+		return ERANGE;
+	}
+	if ((dev->ops == NULL) || (dev->ops->data_out[endpoint] == NULL)) {
+		return ENOTSUP;
+	}
+
+	int rc = dev->ops->data_out[endpoint](dev, endpoint, transf_type,
+	    data, data_size);
+
+	return rc;
+}
+
+/** Request data from virtual USB device.
+ *
+ * @param dev Target virtual device.
+ * @param transf_type Transfer type (interrupt, bulk).
+ * @param endpoint Endpoint number.
+ * @param data Where to stored data the device returns to the driver.
+ * @param data_size Size of the @p data buffer in bytes.
+ * @param data_size_sent Number of actually written bytes.
+ * @return Error code.
+ */
+int usbvirt_data_in(usbvirt_device_t *dev, usb_transfer_type_t transf_type,
+    usb_endpoint_t endpoint, void *data, size_t data_size, size_t *data_size_sent)
+{
+	if ((endpoint <= 0) || (endpoint >= USBVIRT_ENDPOINT_MAX)) {
+		return ERANGE;
+	}
+	if ((dev->ops == NULL) || (dev->ops->data_in[endpoint] == NULL)) {
+		return ENOTSUP;
+	}
+
+	size_t data_size_sent_tmp;
+	int rc = dev->ops->data_in[endpoint](dev, endpoint, transf_type,
+	    data, data_size, &data_size_sent_tmp);
+
+	if (rc != EOK) {
+		return rc;
+	}
+
+	if (data_size_sent != NULL) {
+		*data_size_sent = data_size_sent_tmp;
+	}
+
+	return EOK;
+}
+
+/**
+ * @}
+ */
Index: uspace/srv/devman/main.c
===================================================================
--- uspace/srv/devman/main.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/srv/devman/main.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -515,4 +515,41 @@
 }
 
+/** Find device path by its handle. */
+static void devman_get_device_path_by_handle(ipc_callid_t iid,
+    ipc_call_t *icall)
+{
+	devman_handle_t handle = IPC_GET_ARG1(*icall);
+
+	fun_node_t *fun = find_fun_node(&device_tree, handle);
+	if (fun == NULL) {
+		async_answer_0(iid, ENOMEM);
+		return;
+	}
+
+	ipc_callid_t data_callid;
+	size_t data_len;
+	if (!async_data_read_receive(&data_callid, &data_len)) {
+		async_answer_0(iid, EINVAL);
+		return;
+	}
+
+	void *buffer = malloc(data_len);
+	if (buffer == NULL) {
+		async_answer_0(data_callid, ENOMEM);
+		async_answer_0(iid, ENOMEM);
+		return;
+	}
+
+	size_t sent_length = str_size(fun->pathname);
+	if (sent_length > data_len) {
+		sent_length = data_len;
+	}
+
+	async_data_read_finalize(data_callid, fun->pathname, sent_length);
+	async_answer_0(iid, EOK);
+
+	free(buffer);
+}
+
 
 /** Function for handling connections from a client to the device manager. */
@@ -537,4 +574,7 @@
 			devman_function_get_handle_by_class(callid, &call);
 			break;
+		case DEVMAN_DEVICE_GET_DEVICE_PATH:
+			devman_get_device_path_by_handle(callid, &call);
+			break;
 		default:
 			async_answer_0(callid, ENOENT);
@@ -595,5 +635,6 @@
 	if (driver == NULL) {
 		log_msg(LVL_ERROR, "IPC forwarding refused - " \
-		    "the device %" PRIun " is not in usable state.", handle);
+		    "the device %" PRIun "(%s) is not in usable state.",
+		    handle, dev->pfun->pathname);
 		async_answer_0(iid, ENOENT);
 		return;
Index: uspace/srv/fs/fat/fat_dentry.c
===================================================================
--- uspace/srv/fs/fat/fat_dentry.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/srv/fs/fat/fat_dentry.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -42,5 +42,5 @@
 static bool is_d_char(const char ch)
 {
-	if (isalnum(ch) || ch == '_')
+	if (isalnum(ch) || ch == '_' || ch == '-')
 		return true;
 	else
Index: uspace/srv/hid/console/console.c
===================================================================
--- uspace/srv/hid/console/console.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/srv/hid/console/console.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -41,4 +41,5 @@
 #include <ipc/ns.h>
 #include <errno.h>
+#include <str_error.h>
 #include <ipc/console.h>
 #include <unistd.h>
@@ -56,4 +57,5 @@
 #include <io/style.h>
 #include <io/screenbuffer.h>
+#include <inttypes.h>
 
 #include "console.h"
@@ -64,4 +66,11 @@
 #define NAME       "console"
 #define NAMESPACE  "term"
+/** Interval for checking for new keyboard (1/4s). */
+#define HOTPLUG_WATCH_INTERVAL (1000 * 250)
+
+/* Kernel defines 32 but does not export it. */
+#define MAX_IPC_OUTGOING_PHONES 128
+/** To allow proper phone closing. */
+static ipc_callid_t driver_phones[MAX_IPC_OUTGOING_PHONES] = { 0 };
 
 /** Phone to the keyboard driver. */
@@ -88,4 +97,6 @@
 } console_t;
 
+
+
 /** Array of data for virtual consoles */
 static console_t consoles[CONSOLE_COUNT];
@@ -317,6 +328,7 @@
 static void change_console(console_t *cons)
 {
-	if (cons == active_console)
+	if (cons == active_console) {
 		return;
+	}
 	
 	fb_pending_flush();
@@ -397,4 +409,17 @@
 }
 
+static void close_driver_phone(ipc_callid_t hash)
+{
+	int i;
+	for (i = 0; i < MAX_IPC_OUTGOING_PHONES; i++) {
+		if (driver_phones[i] == hash) {
+			printf("Device %" PRIxn " gone.\n", hash);
+			driver_phones[i] = 0;
+			async_hangup(i);
+			return;
+		}
+	}
+}
+
 /** Handler for keyboard */
 static void keyboard_events(ipc_callid_t iid, ipc_call_t *icall)
@@ -411,4 +436,5 @@
 		case IPC_M_PHONE_HUNGUP:
 			/* TODO: Handle hangup */
+			close_driver_phone(iid);
 			return;
 		case KBD_EVENT:
@@ -454,10 +480,12 @@
 		case IPC_M_PHONE_HUNGUP:
 			/* TODO: Handle hangup */
+			close_driver_phone(iid);
 			return;
 		case MEVENT_BUTTON:
 			if (IPC_GET_ARG1(call) == 1) {
 				int newcon = gcons_mouse_btn((bool) IPC_GET_ARG2(call));
-				if (newcon != -1)
+				if (newcon != -1) {
 					change_console(&consoles[newcon]);
+				}
 			}
 			retval = 0;
@@ -710,49 +738,150 @@
 }
 
+static int async_connect_to_me_hack(int phone, sysarg_t arg1, sysarg_t arg2,
+sysarg_t arg3, async_client_conn_t client_receiver, ipc_callid_t *hash)
+{
+	sysarg_t task_hash;
+	sysarg_t phone_hash;
+	int rc = async_req_3_5(phone, IPC_M_CONNECT_TO_ME, arg1, arg2, arg3,
+	    NULL, NULL, NULL, &task_hash, &phone_hash);
+	if (rc != EOK)
+		return rc;
+
+	if (client_receiver != NULL)
+		async_new_connection(task_hash, phone_hash, phone_hash, NULL,
+		    client_receiver);
+
+	if (hash != NULL) {
+		*hash = phone_hash;
+	}
+
+	return EOK;
+}
+
+static int connect_keyboard_or_mouse(const char *devname,
+    async_client_conn_t handler, const char *path)
+{
+	int fd = open(path, O_RDONLY);
+	if (fd < 0) {
+		return fd;
+	}
+	
+	int phone = fd_phone(fd);
+	close(fd);
+	if (phone < 0) {
+		printf(NAME ": Failed to connect to input device\n");
+		return phone;
+	}
+	
+	ipc_callid_t hash;
+	int rc = async_connect_to_me_hack(phone, SERVICE_CONSOLE, 0, phone,
+	    handler, &hash);
+	if (rc != EOK) {
+		async_hangup(phone);
+		printf(NAME ": " \
+		    "Failed to create callback from input device: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+	
+	driver_phones[phone] = hash;
+
+	printf(NAME ": found %s \"%s\" (%" PRIxn ").\n", devname, path, hash);
+
+	return phone;
+}
+
+static int connect_keyboard(const char *path)
+{
+	return connect_keyboard_or_mouse("keyboard", keyboard_events, path);
+}
+
+static int connect_mouse(const char *path)
+{
+	return connect_keyboard_or_mouse("mouse", mouse_events, path);
+}
+
+struct hid_class_info {
+	char *classname;
+	int (*connection_func)(const char *);
+};
+
+/** Periodically check for new keyboards in /dev/class/.
+ *
+ * @param arg Class name.
+ * @return This function should never exit.
+ */
+static int check_new_device_fibril(void *arg)
+{
+	struct hid_class_info *dev_info = arg;
+
+	size_t index = 1;
+
+	while (true) {
+		async_usleep(HOTPLUG_WATCH_INTERVAL);
+		char *path;
+		int rc = asprintf(&path, "/dev/class/%s\\%zu",
+		    dev_info->classname, index);
+		if (rc < 0) {
+			continue;
+		}
+		rc = 0;
+		rc = dev_info->connection_func(path);
+		if (rc > 0) {
+			/* We do not allow unplug. */
+			index++;
+		}
+
+		free(path);
+	}
+
+	return EOK;
+}
+
+
+/** Start a fibril monitoring hot-plugged keyboards.
+ */
+static void check_new_devices_in_background(int (*connection_func)(const char *),
+    const char *classname)
+{
+	struct hid_class_info *dev_info = malloc(sizeof(struct hid_class_info));
+	if (dev_info == NULL) {
+		printf(NAME ": " \
+		    "out of memory, will not start hot-plug-watch fibril.\n");
+		return;
+	}
+	int rc;
+
+	rc = asprintf(&dev_info->classname, "%s", classname);
+	if (rc < 0) {
+		printf(NAME ": failed to format classname: %s.\n",
+		    str_error(rc));
+		return;
+	}
+	dev_info->connection_func = connection_func;
+
+	fid_t fid = fibril_create(check_new_device_fibril, (void *)dev_info);
+	if (!fid) {
+		printf(NAME
+		    ": failed to create hot-plug-watch fibril for %s.\n",
+		    classname);
+		return;
+	}
+	fibril_add_ready(fid);
+}
+
 static bool console_init(char *input)
 {
 	/* Connect to input device */
-	int input_fd = open(input, O_RDONLY);
-	if (input_fd < 0) {
-		printf(NAME ": Failed opening %s\n", input);
+	kbd_phone = connect_keyboard(input);
+	if (kbd_phone < 0) {
 		return false;
 	}
-	
-	kbd_phone = fd_phone(input_fd);
-	if (kbd_phone < 0) {
-		printf(NAME ": Failed to connect to input device\n");
-		return false;
-	}
-	
-	/* NB: The callback connection is slotted for removal */
-	if (async_connect_to_me(kbd_phone, SERVICE_CONSOLE, 0, 0, keyboard_events)
-	    != 0) {
-		printf(NAME ": Failed to create callback from input device\n");
-		return false;
-	}
-	
-	/* Connect to mouse device */
-	mouse_phone = -1;
-	int mouse_fd = open("/dev/hid_in/mouse", O_RDONLY);
-	
-	if (mouse_fd < 0) {
-		printf(NAME ": Notice - failed opening %s\n", "/dev/hid_in/mouse");
-		goto skip_mouse;
-	}
-	
-	mouse_phone = fd_phone(mouse_fd);
+
+	mouse_phone = connect_mouse("/dev/hid_in/mouse");
 	if (mouse_phone < 0) {
-		printf(NAME ": Failed to connect to mouse device\n");
-		goto skip_mouse;
-	}
-	
-	if (async_connect_to_me(mouse_phone, SERVICE_CONSOLE, 0, 0, mouse_events)
-	    != 0) {
-		printf(NAME ": Failed to create callback from mouse device\n");
-		mouse_phone = -1;
-		goto skip_mouse;
-	}
-	
-skip_mouse:
+		printf(NAME ": Failed to connect to mouse device: %s.\n",
+		    str_error(mouse_phone));
+	}
 	
 	/* Connect to framebuffer driver */
@@ -837,4 +966,8 @@
 		printf(NAME ": Error registering kconsole notifications\n");
 	
+	/* Start fibril for checking on hot-plugged keyboards. */
+	check_new_devices_in_background(connect_keyboard, "keyboard");
+	check_new_devices_in_background(connect_mouse, "mouse");
+
 	return true;
 }
@@ -856,5 +989,5 @@
 	if (!console_init(argv[1]))
 		return -1;
-	
+
 	printf(NAME ": Accepting connections\n");
 	async_manager();
Index: uspace/srv/hw/irc/apic/apic.c
===================================================================
--- uspace/srv/hw/irc/apic/apic.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/srv/hw/irc/apic/apic.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -87,4 +87,8 @@
 			async_answer_0(callid, EOK);
 			break;
+		case IPC_M_PHONE_HUNGUP:
+			/* The other side has hung up. */
+			async_answer_0(callid, EOK);
+			return;
 		default:
 			async_answer_0(callid, EINVAL);
Index: uspace/srv/hw/irc/i8259/i8259.c
===================================================================
--- uspace/srv/hw/irc/i8259/i8259.c	(revision 5d1b3aa2ae833977640704ed7cf0ed0ad531bb41)
+++ uspace/srv/hw/irc/i8259/i8259.c	(revision c9f09755b7b55efc26590633dc8d734d40835ae9)
@@ -121,4 +121,8 @@
 			async_answer_0(callid, EOK);
 			break;
+		case IPC_M_PHONE_HUNGUP:
+			/* The other side has hung up. */
+			async_answer_0(callid, EOK);
+			return;
 		default:
 			async_answer_0(callid, EINVAL);
