Index: uspace/drv/ehci-hcd/Makefile
===================================================================
--- uspace/drv/ehci-hcd/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ehci-hcd/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,39 @@
+#
+# 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 = $(LIBDRV_PREFIX)/libdrv.a $(LIBUSB_PREFIX)/libusb.a
+EXTRA_CFLAGS += -I$(LIBDRV_PREFIX)/include -I$(LIBUSB_PREFIX)/include -I.
+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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ehci-hcd/ehci-hcd.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,38 @@
+10 pci/ven=1002&dev=4345
+10 pci/ven=1002&dev=4386
+10 pci/ven=1002&dev=4396
+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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ehci-hcd/ehci.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ehci-hcd/hc_iface.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,347 @@
+/*
+ * 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__)
+
+/** Reserve default address.
+ *
+ * This function may block the caller.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] speed Speed of the device for which the default address is
+ *	reserved.
+ * @return Error code.
+ */
+static int reserve_default_address(ddf_fun_t *fun, usb_speed_t speed)
+{
+	UNSUPPORTED("reserve_default_address");
+
+	return ENOTSUP;
+}
+
+/** Release default address.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @return Error code.
+ */
+static int release_default_address(ddf_fun_t *fun)
+{
+	UNSUPPORTED("release_default_address");
+
+	return ENOTSUP;
+}
+
+/** 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;
+}
+
+/** 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] 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_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] max_packet_size Max packet size for the transfer.
+ * @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,
+    size_t max_packet_size, 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] max_packet_size Max packet size for the transfer.
+ * @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,
+    size_t max_packet_size, 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] max_packet_size Max packet size for the transfer.
+ * @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,
+    size_t max_packet_size, 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] max_packet_size Max packet size for the transfer.
+ * @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,
+    size_t max_packet_size, 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] max_packet_size Max packet size for the transfer.
+ * @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,
+    size_t max_packet_size,
+    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] max_packet_size Max packet size for the transfer.
+ * @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,
+    size_t max_packet_size,
+    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 = {
+	.reserve_default_address = reserve_default_address,
+	.release_default_address = release_default_address,
+	.request_address = request_address,
+	.bind_address = bind_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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ehci-hcd/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,126 @@
+/*
+ * 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 mem_reg_base = 0;
+	size_t mem_reg_size = 0;
+	int irq = 0;
+
+	int ret =
+	    pci_get_my_registers(device, &mem_reg_base, &mem_reg_size, &irq);
+	CHECK_RET_RETURN(ret,
+	    "Failed(%d) to get memory addresses:.\n", ret, device->handle);
+	usb_log_info("Memory mapped regs at 0x%X (size %zu), IRQ %d.\n",
+	    mem_reg_base, mem_reg_size, irq);
+
+	ret = pci_disable_legacy(device);
+	CHECK_RET_RETURN(ret,
+	    "Failed(%d) disable legacy USB: %s.\n", ret, 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));
+
+	usb_log_info("Controlling new EHCI device `%s' (handle %llu).\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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ehci-hcd/pci.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,315 @@
+/*
+ * 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 <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 CONFIGFLAG_OFFSET 0x40
+
+#define USBCMD_RUN 1
+
+#define USBLEGSUP_OFFSET 0
+#define USBLEGSUP_BIOS_CONTROL (1 << 16)
+#define USBLEGSUP_OS_CONTROL (1 << 24)
+#define USBLEGCTLSTS_OFFSET 4
+
+#define DEFAULT_WAIT 10000
+#define WAIT_STEP 10
+
+/** 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 != NULL);
+
+	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: %llx %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(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;
+}
+/*----------------------------------------------------------------------------*/
+/** Implements BIOS handoff routine as decribed in EHCI spec
+ *
+ * @param[in] device Device asking for interrupts
+ * @return Error code.
+ */
+int pci_disable_legacy(ddf_dev_t *device)
+{
+	assert(device);
+	int parent_phone = devman_parent_device_connect(device->handle,
+		IPC_FLAG_BLOCKING);
+	if (parent_phone < 0) {
+		return parent_phone;
+	}
+
+#define CHECK_RET_HANGUP_RETURN(ret, message...) \
+	if (ret != EOK) { \
+		usb_log_error(message); \
+		async_hangup(parent_phone); \
+		return ret; \
+	} else (void)0
+
+
+	/* read register space BASE BAR */
+	sysarg_t address = 0x10;
+	sysarg_t value;
+
+	int ret = async_req_2_1(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+	    IPC_M_CONFIG_SPACE_READ_32, address, &value);
+	CHECK_RET_HANGUP_RETURN(ret, "Failed(%d) to read PCI config space.\n",
+	    ret);
+	usb_log_info("Register space BAR at %p:%x.\n", address, value);
+
+	/* clear lower byte, it's not part of the BASE address */
+	uintptr_t registers = (value & 0xffffff00);
+	usb_log_info("Memory registers BASE address:%p.\n", registers);
+
+	/* if nothing setup the hc, we don't need to turn it off */
+	if (registers == 0)
+		return ENOTSUP;
+
+	/* map EHCI registers */
+	void *regs = as_get_mappable_page(4096);
+	ret = physmem_map((void*)(registers & PAGE_SIZE_MASK), regs, 1,
+	    AS_AREA_READ | AS_AREA_WRITE);
+	CHECK_RET_HANGUP_RETURN(ret, "Failed(%d) to map registers %p:%p.\n",
+	    ret, regs, registers);
+
+	/* calculate value of BASE */
+	registers = (registers & 0xf00) | (uintptr_t)regs;
+
+	const uint32_t hcc_params =
+	    *(uint32_t*)(registers + HCC_PARAMS_OFFSET);
+	usb_log_debug("Value of hcc params register: %x.\n", hcc_params);
+
+	/* Read value of EHCI Extended Capabilities Pointer
+	 * (points to PCI config space) */
+	uint32_t eecp =
+	    (hcc_params >> HCC_PARAMS_EECP_OFFSET) & HCC_PARAMS_EECP_MASK;
+	usb_log_debug("Value of EECP: %x.\n", eecp);
+
+	/* Read the second EEC. i.e. Legacy Support and Control register */
+	/* TODO: Check capability type here */
+	ret = async_req_2_1(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+	    IPC_M_CONFIG_SPACE_READ_32, eecp + USBLEGCTLSTS_OFFSET, &value);
+	CHECK_RET_HANGUP_RETURN(ret, "Failed(%d) to read USBLEGCTLSTS.\n", ret);
+	usb_log_debug("USBLEGCTLSTS: %x.\n", value);
+
+	/* Read the first EEC. i.e. Legacy Support register */
+	/* TODO: Check capability type here */
+	ret = async_req_2_1(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+	    IPC_M_CONFIG_SPACE_READ_32, eecp + USBLEGSUP_OFFSET, &value);
+	CHECK_RET_HANGUP_RETURN(ret, "Failed(%d) to read USBLEGSUP.\n", ret);
+	usb_log_debug2("USBLEGSUP: %x.\n", value);
+
+	/* Request control from firmware/BIOS, by writing 1 to highest byte.
+	 * (OS Control semaphore)*/
+	ret = async_req_3_0(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+	   IPC_M_CONFIG_SPACE_WRITE_8, eecp + USBLEGSUP_OFFSET + 3, 1);
+	CHECK_RET_HANGUP_RETURN(ret, "Failed(%d) to request OS EHCI control.\n",
+	    ret);
+
+	size_t wait = 0;
+	/* Wait for BIOS to release control. */
+	while ((wait < DEFAULT_WAIT) && (value & USBLEGSUP_BIOS_CONTROL)) {
+		async_usleep(WAIT_STEP);
+		ret = async_req_2_1(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+		    IPC_M_CONFIG_SPACE_READ_32, eecp + USBLEGSUP_OFFSET, &value);
+		wait += WAIT_STEP;
+	}
+
+
+	if ((value & USBLEGSUP_BIOS_CONTROL) == 0) {
+		usb_log_info("BIOS released control after %d usec.\n", wait);
+	} else {
+		/* BIOS failed to hand over control, this should not happen. */
+		usb_log_warning( "BIOS failed to release control after "
+		    "%d usecs, force it.\n", wait);
+		ret = async_req_3_0(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+		    IPC_M_CONFIG_SPACE_WRITE_32, eecp + USBLEGSUP_OFFSET,
+		    USBLEGSUP_OS_CONTROL);
+		CHECK_RET_HANGUP_RETURN(ret,
+		    "Failed(%d) to force OS EHCI control.\n", ret);
+	}
+
+	/* Zero SMI enables in legacy control register.
+	 * It would prevent pre-OS code from interfering. */
+	ret = async_req_3_0(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+	   IPC_M_CONFIG_SPACE_WRITE_32, eecp + USBLEGCTLSTS_OFFSET, 0);
+	CHECK_RET_HANGUP_RETURN(ret, "Failed(%d) zero USBLEGCTLSTS.\n", ret);
+	usb_log_debug("Zeroed USBLEGCTLSTS register.\n");
+
+	/* Read again Legacy Support and Control register */
+	ret = async_req_2_1(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+	    IPC_M_CONFIG_SPACE_READ_32, eecp + USBLEGCTLSTS_OFFSET, &value);
+	CHECK_RET_HANGUP_RETURN(ret, "Failed(%d) to read USBLEGCTLSTS.\n", ret);
+	usb_log_debug2("USBLEGCTLSTS: %x.\n", value);
+
+	/* Read again Legacy Support register */
+	ret = async_req_2_1(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+	    IPC_M_CONFIG_SPACE_READ_32, eecp + USBLEGSUP_OFFSET, &value);
+	CHECK_RET_HANGUP_RETURN(ret, "Failed(%d) to read USBLEGSUP.\n", ret);
+	usb_log_debug2("USBLEGSUP: %x.\n", value);
+
+	/*
+	 * TURN OFF EHCI FOR NOW, DRIVER WILL REINITIALIZE IT
+	 */
+
+	/* Get size of capability registers in memory space. */
+	uint8_t operation_offset = *(uint8_t*)registers;
+	usb_log_debug("USBCMD offset: %d.\n", operation_offset);
+
+	/* Zero USBCMD register. */
+	volatile uint32_t *usbcmd =
+	    (uint32_t*)((uint8_t*)registers + operation_offset + CMD_OFFSET);
+	volatile uint32_t *usbconfigured =
+	    (uint32_t*)((uint8_t*)registers + operation_offset
+	    + CONFIGFLAG_OFFSET);
+	usb_log_debug("USBCMD value: %x.\n", *usbcmd);
+	if (*usbcmd & USBCMD_RUN) {
+		*usbcmd = 0;
+		*usbconfigured = 0;
+		usb_log_info("EHCI turned off.\n");
+	} else {
+		usb_log_info("EHCI was not running.\n");
+	}
+
+	async_hangup(parent_phone);
+	return ret;
+#undef CHECK_RET_HANGUP_RETURN
+}
+/*----------------------------------------------------------------------------*/
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
Index: uspace/drv/ehci-hcd/pci.h
===================================================================
--- uspace/drv/ehci-hcd/pci.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ehci-hcd/pci.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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(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/Makefile
===================================================================
--- uspace/drv/ohci/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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.
+#
+
+USPACE_PREFIX = ../..
+LIBS = $(LIBDRV_PREFIX)/libdrv.a $(LIBUSB_PREFIX)/libusb.a
+EXTRA_CFLAGS += -I$(LIBDRV_PREFIX)/include -I$(LIBUSB_PREFIX)/include -I.
+BINARY = ohci
+
+SOURCES = \
+	iface.c \
+	batch.c \
+	main.c \
+	hc.c \
+	ohci.c \
+	root_hub.c \
+	pci.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/ohci/batch.c
===================================================================
--- uspace/drv/ohci/batch.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/batch.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,185 @@
+/*
+ * 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 "utils/malloc32.h"
+
+static void batch_call_in_and_dispose(usb_transfer_batch_t *instance);
+static void batch_call_out_and_dispose(usb_transfer_batch_t *instance);
+
+#define DEFAULT_ERROR_COUNT 3
+usb_transfer_batch_t * batch_get(
+    ddf_fun_t *fun,
+		usb_target_t target,
+    usb_transfer_type_t transfer_type,
+		size_t max_packet_size,
+    usb_speed_t speed,
+		char *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,
+		usb_device_keeper_t *manager
+		)
+{
+#define CHECK_NULL_DISPOSE_RETURN(ptr, message...) \
+        if (ptr == NULL) { \
+                usb_log_error(message); \
+                if (instance) { \
+                        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, target, transfer_type, speed, max_packet_size,
+	    buffer, NULL, buffer_size, NULL, setup_size, func_in,
+	    func_out, arg, fun, NULL);
+
+        if (buffer_size > 0) {
+                instance->transport_buffer = malloc32(buffer_size);
+                CHECK_NULL_DISPOSE_RETURN(instance->transport_buffer,
+                    "Failed to allocate device accessible buffer.\n");
+        }
+
+        if (setup_size > 0) {
+                instance->setup_buffer = malloc32(setup_size);
+                CHECK_NULL_DISPOSE_RETURN(instance->setup_buffer,
+                    "Failed to allocate device accessible setup buffer.\n");
+                memcpy(instance->setup_buffer, setup_buffer, setup_size);
+        }
+
+
+	return instance;
+}
+/*----------------------------------------------------------------------------*/
+void batch_dispose(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	free32(instance->transport_buffer);
+	free32(instance->setup_buffer);
+	free(instance);
+}
+/*----------------------------------------------------------------------------*/
+void batch_control_write(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	/* We are data out, we are supposed to provide data */
+	memcpy(instance->transport_buffer, instance->buffer,
+	    instance->buffer_size);
+	instance->next_step = batch_call_out_and_dispose;
+	/* TODO: implement */
+	usb_log_debug("Batch(%p) CONTROL WRITE initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+void batch_control_read(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->next_step = batch_call_in_and_dispose;
+	/* TODO: implement */
+	usb_log_debug("Batch(%p) CONTROL READ initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+void batch_interrupt_in(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->direction = USB_DIRECTION_IN;
+	instance->next_step = batch_call_in_and_dispose;
+	/* TODO: implement */
+	usb_log_debug("Batch(%p) INTERRUPT IN initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+void batch_interrupt_out(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->direction = USB_DIRECTION_OUT;
+	/* We are data out, we are supposed to provide data */
+	memcpy(instance->transport_buffer, instance->buffer,
+	    instance->buffer_size);
+	instance->next_step = batch_call_out_and_dispose;
+	/* TODO: implement */
+	usb_log_debug("Batch(%p) INTERRUPT OUT initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+void batch_bulk_in(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->direction = USB_DIRECTION_IN;
+	instance->next_step = batch_call_in_and_dispose;
+	/* TODO: implement */
+	usb_log_debug("Batch(%p) BULK IN initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+void batch_bulk_out(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->direction = USB_DIRECTION_IN;
+	instance->next_step = batch_call_in_and_dispose;
+	/* TODO: implement */
+	usb_log_debug("Batch(%p) BULK IN initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Helper function calls callback and correctly disposes of batch structure.
+ *
+ * @param[in] instance Batch structure to use.
+ */
+void batch_call_in_and_dispose(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	usb_transfer_batch_call_in(instance);
+	batch_dispose(instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Helper function calls callback and correctly disposes of batch structure.
+ *
+ * @param[in] instance Batch structure to use.
+ */
+void batch_call_out_and_dispose(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	usb_transfer_batch_call_out(instance);
+	batch_dispose(instance);
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/batch.h
===================================================================
--- uspace/drv/ohci/batch.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/batch.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 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/batch.h>
+
+usb_transfer_batch_t * batch_get(
+    ddf_fun_t *fun,
+		usb_target_t target,
+    usb_transfer_type_t transfer_type,
+		size_t max_packet_size,
+    usb_speed_t speed,
+		char *buffer,
+		size_t 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,
+		usb_device_keeper_t *manager
+		);
+
+void batch_dispose(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/hc.c
===================================================================
--- uspace/drv/ohci/hc.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/hc.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,137 @@
+/*
+ * 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 <usb/usbdevice.h>
+
+#include "hc.h"
+
+static int interrupt_emulator(hc_t *instance);
+/*----------------------------------------------------------------------------*/
+int hc_register_hub(hc_t *instance, ddf_fun_t *hub_fun)
+{
+	assert(instance);
+	assert(hub_fun);
+
+	usb_address_t hub_address =
+	    device_keeper_get_free_address(&instance->manager, USB_SPEED_FULL);
+	instance->rh.address = hub_address;
+	usb_device_keeper_bind(
+	    &instance->manager, hub_address, hub_fun->handle);
+
+	char *match_str = NULL;
+	int ret = asprintf(&match_str, "usb&class=hub");
+	ret = (match_str == NULL) ? ret : EOK;
+	if (ret < 0) {
+		usb_log_error("Failed to create root hub match-id string.\n");
+		return ret;
+	}
+
+	ret = ddf_fun_add_match_id(hub_fun, match_str, 100);
+	if (ret != EOK) {
+		usb_log_error("Failed add create root hub match-id.\n");
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+int hc_init(hc_t *instance, ddf_fun_t *fun, ddf_dev_t *dev,
+    uintptr_t regs, size_t reg_size, bool interrupts)
+{
+	assert(instance);
+	int ret = EOK;
+
+	ret = pio_enable((void*)regs, reg_size, (void**)&instance->registers);
+	if (ret != EOK) {
+		usb_log_error("Failed to gain access to device registers.\n");
+		return ret;
+	}
+	instance->ddf_instance = fun;
+	usb_device_keeper_init(&instance->manager);
+
+	if (!interrupts) {
+		instance->interrupt_emulator =
+		    fibril_create((int(*)(void*))interrupt_emulator, instance);
+		fibril_add_ready(instance->interrupt_emulator);
+	}
+
+	rh_init(&instance->rh, dev, instance->registers);
+
+	/* TODO: implement */
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+int hc_schedule(hc_t *instance, usb_transfer_batch_t *batch)
+{
+	assert(instance);
+	assert(batch);
+	if (batch->target.address == instance->rh.address) {
+		return rh_request(&instance->rh, batch);
+	}
+	/* TODO: implement */
+	return ENOTSUP;
+}
+/*----------------------------------------------------------------------------*/
+void hc_interrupt(hc_t *instance, uint32_t status)
+{
+	assert(instance);
+	if (status == 0)
+		return;
+	if (status & IS_RHSC)
+		rh_interrupt(&instance->rh);
+
+	/* TODO: Check for further interrupt causes */
+	/* TODO: implement */
+}
+/*----------------------------------------------------------------------------*/
+int interrupt_emulator(hc_t *instance)
+{
+	assert(instance);
+	usb_log_info("Started interrupt emulator.\n");
+	while (1) {
+		uint32_t status = instance->registers->interrupt_status;
+		instance->registers->interrupt_status = status;
+		hc_interrupt(instance, status);
+		async_usleep(1000);
+	}
+	return EOK;
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/hc.h
===================================================================
--- uspace/drv/ohci/hc.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/hc.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,84 @@
+/*
+ * 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 <usbhc_iface.h>
+
+#include "batch.h"
+#include "ohci_regs.h"
+#include "root_hub.h"
+
+typedef struct hc {
+	ohci_regs_t *registers;
+	usb_address_t rh_address;
+	rh_t rh;
+	ddf_fun_t *ddf_instance;
+	usb_device_keeper_t manager;
+	fid_t interrupt_emulator;
+} hc_t;
+
+int hc_register_hub(hc_t *instance, ddf_fun_t *hub_fun);
+
+int hc_init(hc_t *instance, ddf_fun_t *fun, ddf_dev_t *dev,
+     uintptr_t regs, size_t reg_size, bool interrupts);
+
+int hc_schedule(hc_t *instance, usb_transfer_batch_t *batch);
+
+void hc_interrupt(hc_t *instance, uint32_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)
+	{ return (hc_t*)fun->driver_data; }
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/iface.c
===================================================================
--- uspace/drv/ohci/iface.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/iface.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,466 @@
+/*
+ * 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
+ * USB-HC interface implementation.
+ */
+#include <ddf/driver.h>
+#include <errno.h>
+
+#include <usb/debug.h>
+
+#include "iface.h"
+#include "hc.h"
+
+#define UNSUPPORTED(methodname) \
+	usb_log_warning("Unsupported interface method `%s()' in %s:%d.\n", \
+	    methodname, __FILE__, __LINE__)
+
+/** Reserve default address.
+ *
+ * This function may block the caller.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @param[in] speed Speed of the device for which the default address is
+ *	reserved.
+ * @return Error code.
+ */
+static int reserve_default_address(ddf_fun_t *fun, usb_speed_t speed)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Default address request with speed %d.\n", speed);
+	usb_device_keeper_reserve_default_address(&hc->manager, speed);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Release default address.
+ *
+ * @param[in] fun Device function the action was invoked on.
+ * @return Error code.
+ */
+static int release_default_address(ddf_fun_t *fun)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Default address release.\n");
+	usb_device_keeper_release_default_address(&hc->manager);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** 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)
+{
+	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 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)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Address bind %d-%d.\n", address, handle);
+	usb_device_keeper_bind(&hc->manager, address, handle);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** 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)
+{
+	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] 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_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] max_packet_size Max packet size for the transfer.
+ * @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, size_t max_packet_size, void *data,
+    size_t size, usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+
+	usb_log_debug("Interrupt OUT %d:%d %zu(%zu).\n",
+	    target.address, target.endpoint, size, max_packet_size);
+
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_INTERRUPT, max_packet_size,
+	        speed, data, size, NULL, 0, NULL, callback, arg, &hc->manager);
+	if (!batch)
+		return ENOMEM;
+	batch_interrupt_out(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		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] max_packet_size Max packet size for the transfer.
+ * @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, size_t max_packet_size, void *data,
+    size_t size, usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+	usb_log_debug("Interrupt IN %d:%d %zu(%zu).\n",
+	    target.address, target.endpoint, size, max_packet_size);
+
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_INTERRUPT, max_packet_size,
+	        speed, data, size, NULL, 0, callback, NULL, arg, &hc->manager);
+	if (!batch)
+		return ENOMEM;
+	batch_interrupt_in(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		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] max_packet_size Max packet size for the transfer.
+ * @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, size_t max_packet_size, void *data,
+    size_t size, usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+
+	usb_log_debug("Bulk OUT %d:%d %zu(%zu).\n",
+	    target.address, target.endpoint, size, max_packet_size);
+
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_BULK, max_packet_size, speed,
+	        data, size, NULL, 0, NULL, callback, arg, &hc->manager);
+	if (!batch)
+		return ENOMEM;
+	batch_bulk_out(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		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] max_packet_size Max packet size for the transfer.
+ * @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, size_t max_packet_size, void *data,
+    size_t size, usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+	usb_log_debug("Bulk IN %d:%d %zu(%zu).\n",
+	    target.address, target.endpoint, size, max_packet_size);
+
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_BULK, max_packet_size, speed,
+	        data, size, NULL, 0, callback, NULL, arg, &hc->manager);
+	if (!batch)
+		return ENOMEM;
+	batch_bulk_in(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		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] max_packet_size Max packet size for the transfer.
+ * @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, size_t max_packet_size,
+    void *setup_data, size_t setup_size, void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+	usb_log_debug("Control WRITE (%d) %d:%d %zu(%zu).\n",
+	    speed, target.address, target.endpoint, size, max_packet_size);
+
+	if (setup_size != 8)
+		return EINVAL;
+
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_CONTROL, max_packet_size,
+	        speed, data, size, setup_data, setup_size, NULL, callback, arg,
+		&hc->manager);
+	if (!batch)
+		return ENOMEM;
+	usb_device_keeper_reset_if_need(&hc->manager, target, setup_data);
+	batch_control_write(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		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] max_packet_size Max packet size for the transfer.
+ * @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, size_t max_packet_size,
+    void *setup_data, size_t setup_size, void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+
+	usb_log_debug("Control READ(%d) %d:%d %zu(%zu).\n",
+	    speed, target.address, target.endpoint, size, max_packet_size);
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_CONTROL, max_packet_size,
+	        speed, data, size, setup_data, setup_size, callback, NULL, arg,
+		&hc->manager);
+	if (!batch)
+		return ENOMEM;
+	batch_control_read(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+/** Host controller interface implementation for OHCI. */
+usbhc_iface_t hc_iface = {
+	.reserve_default_address = reserve_default_address,
+	.release_default_address = release_default_address,
+	.request_address = request_address,
+	.bind_address = bind_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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/iface.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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.
+ */
+
+/** @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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,100 @@
+/*
+ * 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"
+
+static int ohci_add_device(ddf_dev_t *device);
+/*----------------------------------------------------------------------------*/
+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 a new ddf driver instance of OHCI hcd.
+ *
+ * @param[in] device DDF instance of the device to initialize.
+ * @return Error code.
+ */
+int ohci_add_device(ddf_dev_t *device)
+{
+	usb_log_debug("ohci_add_device() called\n");
+	assert(device);
+	ohci_t *ohci = malloc(sizeof(ohci_t));
+	if (ohci == NULL) {
+		usb_log_error("Failed to allocate OHCI driver.\n");
+		return ENOMEM;
+	}
+
+	int ret = ohci_init(ohci, device);
+	if (ret != EOK) {
+		usb_log_error("Failed to initialize OHCI driver: %s.\n",
+		    str_error(ret));
+		return ret;
+	}
+	device->driver_data = ohci;
+
+	usb_log_info("Controlling new OHCI device `%s'.\n", device->name);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** 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);
+	sleep(5);
+	return ddf_driver_main(&ohci_driver);
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/ohci.c
===================================================================
--- uspace/drv/ohci/ohci.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/ohci.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,225 @@
+/*
+ * 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"
+
+/** 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)
+{
+	assert(dev);
+	hc_t *hc = &((ohci_t*)dev->driver_data)->hc;
+	uint16_t status = IPC_GET_ARG1(*call);
+	assert(hc);
+	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 = &((ohci_t*)fun->dev->driver_data)->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(handle);
+	ddf_fun_t *hc_fun = ((ohci_t*)fun->dev->driver_data)->hc_fun;
+	assert(hc_fun != NULL);
+
+	*handle = hc_fun->handle;
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** This iface is generic for both RH and HC. */
+static usb_iface_t usb_iface = {
+	.get_hc_handle = usb_iface_get_hc_handle,
+	.get_address = usb_iface_get_address
+};
+/*----------------------------------------------------------------------------*/
+static ddf_dev_ops_t hc_ops = {
+	.interfaces[USBHC_DEV_IFACE] = &hc_iface, /* see iface.h/c */
+};
+/*----------------------------------------------------------------------------*/
+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] instance OHCI structure to use.
+ * @param[in] device DDF instance of the device 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 ohci_init(ohci_t *instance, ddf_dev_t *device)
+{
+	assert(instance);
+	instance->hc_fun = NULL;
+	instance->rh_fun = NULL;
+#define CHECK_RET_DEST_FUN_RETURN(ret, message...) \
+if (ret != EOK) { \
+	usb_log_error(message); \
+	if (instance->hc_fun) \
+		ddf_fun_destroy(instance->hc_fun); \
+	if (instance->rh_fun) \
+		ddf_fun_destroy(instance->rh_fun); \
+	return ret; \
+}
+
+	uintptr_t mem_reg_base = 0;
+	size_t mem_reg_size = 0;
+	int irq = 0;
+
+	int ret =
+	    pci_get_my_registers(device, &mem_reg_base, &mem_reg_size, &irq);
+	CHECK_RET_DEST_FUN_RETURN(ret,
+	    "Failed(%d) to get memory addresses:.\n", ret, device->handle);
+	usb_log_debug("Memory mapped regs at 0x%X (size %zu), IRQ %d.\n",
+	    mem_reg_base, mem_reg_size, irq);
+
+	ret = pci_disable_legacy(device);
+	CHECK_RET_DEST_FUN_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
+
+	instance->hc_fun = ddf_fun_create(device, fun_exposed, "ohci-hc");
+	ret = (instance->hc_fun == NULL) ? ENOMEM : EOK;
+	CHECK_RET_DEST_FUN_RETURN(ret,
+	    "Failed(%d) to create HC function.\n", ret);
+
+	ret = hc_init(&instance->hc, instance->hc_fun, device,
+	    mem_reg_base, mem_reg_size, interrupts);
+	CHECK_RET_DEST_FUN_RETURN(ret, "Failed(%d) to init ohci-hcd.\n", ret);
+	instance->hc_fun->ops = &hc_ops;
+	instance->hc_fun->driver_data = &instance->hc;
+	ret = ddf_fun_bind(instance->hc_fun);
+	CHECK_RET_DEST_FUN_RETURN(ret,
+	    "Failed(%d) to bind OHCI device function: %s.\n",
+	    ret, str_error(ret));
+#undef CHECK_RET_HC_RETURN
+
+#define CHECK_RET_FINI_RETURN(ret, message...) \
+if (ret != EOK) { \
+	usb_log_error(message); \
+	if (instance->hc_fun) \
+		ddf_fun_destroy(instance->hc_fun); \
+	if (instance->rh_fun) \
+		ddf_fun_destroy(instance->rh_fun); \
+	hc_fini(&instance->hc); \
+	return ret; \
+}
+
+	/* It does no harm if we register this on polling */
+	ret = register_interrupt_handler(device, irq, irq_handler, NULL);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to register interrupt handler.\n", ret);
+
+	instance->rh_fun = ddf_fun_create(device, fun_inner, "ohci-rh");
+	ret = (instance->rh_fun == NULL) ? ENOMEM : EOK;
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to create root hub function.\n", ret);
+
+	hc_register_hub(&instance->hc, instance->rh_fun);
+
+	instance->rh_fun->ops = &rh_ops;
+	instance->rh_fun->driver_data = NULL;
+	ret = ddf_fun_bind(instance->rh_fun);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to register OHCI root hub.\n", ret);
+
+	return EOK;
+#undef CHECK_RET_FINI_RETURN
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/ohci.h
===================================================================
--- uspace/drv/ohci/ohci.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/ohci.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,56 @@
+/*
+ * 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>
+
+#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;
+
+int ohci_init(ohci_t *instance, ddf_dev_t *device);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/ohci.ma
===================================================================
--- uspace/drv/ohci/ohci.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/ohci.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,1 @@
+10 pci/ven=106b&dev=003f
Index: uspace/drv/ohci/ohci_regs.h
===================================================================
--- uspace/drv/ohci/ohci_regs.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/ohci_regs.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 drvusbohcihc
+ * @{
+ */
+/** @file
+ * @brief OHCI host controller register structure
+ */
+#ifndef DRV_OHCI_OHCI_REGS_H
+#define DRV_OHCI_OHCI_REGS_H
+#include <stdint.h>
+
+typedef struct ohci_regs
+{
+	volatile uint32_t revision;
+	volatile uint32_t control;
+	volatile uint32_t command_status;
+	volatile uint32_t interrupt_status;
+#define IS_SO (1 << 0)
+#define IS_WDH (1 << 1)
+#define IS_SF (1 << 2)
+#define IS_RD (1 << 3)
+#define IS_UE (1 << 4)
+#define IS_FNO (1 << 5)
+#define IS_RHSC (1 << 6)
+#define IS_OC (1 << 30)
+	volatile uint32_t interupt_enable;
+#define IE_SO   (1 << 0)
+#define IE_WDH  (1 << 1)
+#define IE_SF   (1 << 2)
+#define IE_RD   (1 << 3)
+#define IE_UE   (1 << 4)
+#define IE_FNO  (1 << 5)
+#define IE_RHSC (1 << 6)
+#define IE_OC   (1 << 30)
+#define IE_MIE  (1 << 31)
+
+	volatile uint32_t interrupt_disable;
+	volatile uint32_t hcca;
+	volatile uint32_t period_corrent;
+	volatile uint32_t control_head;
+	volatile uint32_t control_current;
+	volatile uint32_t bulk_head;
+	volatile uint32_t bulk_current;
+	volatile uint32_t done_head;
+	volatile uint32_t fm_interval;
+	volatile uint32_t fm_remaining;
+	volatile uint32_t fm_number;
+	volatile uint32_t periodic_start;
+	volatile uint32_t ls_threshold;
+	volatile uint32_t rh_desc_a;
+	volatile uint32_t rh_desc_b;
+	volatile uint32_t rh_status;
+	volatile uint32_t rh_port_status[];
+} __attribute__((packed)) ohci_regs_t;
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/ohci/pci.c
===================================================================
--- uspace/drv/ohci/pci.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/pci.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 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"
+
+#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 CONFIGFLAG_OFFSET 0x40
+
+#define USBCMD_RUN 1
+
+#define USBLEGSUP_OFFSET 0
+#define USBLEGSUP_BIOS_CONTROL (1 << 16)
+#define USBLEGSUP_OS_CONTROL (1 << 24)
+#define USBLEGCTLSTS_OFFSET 4
+
+#define DEFAULT_WAIT 10000
+#define WAIT_STEP 10
+
+/** 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 != NULL);
+
+	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: %llx %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(ddf_dev_t *device)
+{
+	return ENOTSUP;
+	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;
+}
+/*----------------------------------------------------------------------------*/
+/** Implements BIOS handoff routine as decribed in OHCI spec
+ *
+ * @param[in] device Device asking for interrupts
+ * @return Error code.
+ */
+int pci_disable_legacy(ddf_dev_t *device)
+{
+	/* TODO: implement */
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
Index: uspace/drv/ohci/pci.h
===================================================================
--- uspace/drv/ohci/pci.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/pci.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/root_hub.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,675 @@
+/*
+ * 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/devdrv.h"
+#include <usb/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),
+		/// \TODO this value is guessed
+		.max_packet_size = 8,
+		.vendor_id = 0x16db,
+		.product_id = 0x0001,
+		/// \TODO these values migt be different
+		.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 =
+{
+	/// \TODO some values are default or guessed
+	.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,
+	/// \TODO is this correct?
+	.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,
+};
+
+/**
+ * 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
+ * @param@out out_result pointer to resultant serialized descriptor
+ * @param@out out_size size of serialized descriptor
+ */
+static void usb_create_serialized_hub_descriptor(rh_t *instance,
+		uint8_t ** out_result,
+		size_t * out_size) {
+	//base size
+	size_t size = 7;
+	//variable size according to port count
+	size_t var_size = instance->port_count / 8 +
+			((instance->port_count % 8 > 0) ? 1 : 0);
+	size += 2 * var_size;
+	uint8_t * result = (uint8_t*) malloc(size);
+	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;
+
+	int port;
+	for (port = 1; port <= instance->port_count; ++port) {
+		result[7 + port/8] +=
+				((instance->registers->rh_desc_b >> port)%2) << (port%8);
+	}
+	size_t i;
+	for (i = 0; i < var_size; ++i) {
+		result[7 + var_size + i] = 255;
+	}
+	(*out_result) = result;
+	(*out_size) = size;
+}
+
+
+/** initialize hub descriptors
+ *
+ * Initialized are device and full configuration descriptor. These need to
+ * be initialized only once per hub.
+ * @instance root hub instance
+ */
+static void 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));
+	uint8_t * hub_descriptor;
+	size_t hub_desc_size;
+	usb_create_serialized_hub_descriptor(instance, &hub_descriptor,
+			&hub_desc_size);
+
+	descriptor.total_length =
+			sizeof(usb_standard_configuration_descriptor_t)+
+			sizeof(usb_standard_endpoint_descriptor_t)+
+			sizeof(usb_standard_interface_descriptor_t)+
+			hub_desc_size;
+	
+	uint8_t * full_config_descriptor =
+			(uint8_t*) malloc(descriptor.total_length);
+	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),
+			hub_descriptor, hub_desc_size);
+	
+	instance->descriptors.configuration = full_config_descriptor;
+	instance->descriptors.configuration_size = descriptor.total_length;
+}
+
+/** Root hub initialization
+ * @return Error code.
+ */
+int rh_init(rh_t *instance, ddf_dev_t *dev, ohci_regs_t *regs)
+{
+	assert(instance);
+	instance->address = -1;
+	instance->registers = regs;
+	instance->device = dev;
+	rh_init_descriptors(instance);
+
+
+	usb_log_info("OHCI root hub with %d ports.\n", regs->rh_desc_a & 0xff);
+
+	//start generic usb hub driver
+	
+	/* TODO: implement */
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+/**
+ * create answer to port status_request
+ *
+ * Copy content of corresponding port status register to answer buffer.
+ *
+ * @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;
+	uint32_t * uint32_buffer = (uint32_t*)request->buffer;
+	request->transfered_size = 4;
+	uint32_buffer[0] = instance->registers->rh_port_status[port -1];
+	return EOK;
+}
+
+/**
+ * create answer to port status_request
+ *
+ * Copy content of hub status register to answer buffer.
+ *
+ * @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){
+	uint32_t * uint32_buffer = (uint32_t*)request->buffer;
+	//bits, 0,1,16,17
+	request->transfered_size = 4;
+	uint32_t mask = 1 & (1<<1) & (1<<16) & (1<<17);
+	uint32_buffer[0] = mask & instance->registers->rh_status;
+	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/*request_packet->length*/){///\TODO
+		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.
+ * @param instance root hub instance
+ * @param@out buffer pointer to created interrupt mas
+ * @param@out buffer_size size of created interrupt mask
+ */
+static void create_interrupt_mask(rh_t *instance, void ** buffer,
+		size_t * buffer_size){
+	int bit_count = instance->port_count + 1;
+	(*buffer_size) = (bit_count / 8) + (bit_count%8==0)?0:1;
+	(*buffer) = malloc(*buffer_size);
+	uint8_t * bitmap = (uint8_t*)(*buffer);
+	uint32_t mask = (1<<16) + (1<<17);
+	bzero(bitmap,(*buffer_size));
+	if(instance->registers->rh_status & mask){
+		bitmap[0] = 1;
+	}
+	int port;
+	mask = 0;
+	int i;
+	for(i=16;i<=20;++i)
+		mask += 1<<i;
+	for(port = 1; port<=instance->port_count;++port){
+		if(mask & instance->registers->rh_port_status[port-1]){
+			bitmap[(port+1)/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);
+	bool del = false;
+	switch (setup_request_value)
+	{
+		case USB_DESCTYPE_HUB: {
+			uint8_t * descriptor;
+			usb_create_serialized_hub_descriptor(
+				instance, &descriptor, &size);
+			result_descriptor = descriptor;
+			if(result_descriptor) del = true;
+			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->transport_buffer,result_descriptor,size);
+	usb_log_debug("sent desctiptor: %s\n",
+			usb_debug_str_buffer((uint8_t*)request->transport_buffer,size,size));
+	if (del)
+		free(result_descriptor);
+	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->buffer[0] = 1;
+	request->transfered_size = 1;
+	return EOK;
+}
+
+/**
+ * process feature-enabling/disabling request on hub
+ * 
+ * @param instance root hub instance
+ * @param feature feature selector
+ * @param enable enable or disable specified feature
+ * @return error code
+ */
+static int process_hub_feature_set_request(rh_t *instance,
+		uint16_t feature, bool enable){
+	if(feature > USB_HUB_FEATURE_C_HUB_OVER_CURRENT)
+		return EINVAL;
+	instance->registers->rh_status =
+			enable ?
+			(instance->registers->rh_status | (1<<feature))
+			:
+			(instance->registers->rh_status & (~(1<<feature)));
+	/// \TODO any error?
+	return EOK;
+}
+
+/**
+ * process feature-enabling/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_set_request(rh_t *instance,
+		uint16_t feature, uint16_t port, bool enable){
+	if(feature > USB_HUB_FEATURE_C_PORT_RESET)
+		return EINVAL;
+	if(port<1 || port>instance->port_count)
+		return EINVAL;
+	instance->registers->rh_port_status[port - 1] =
+			enable ?
+			(instance->registers->rh_port_status[port - 1] | (1<<feature))
+			:
+			(instance->registers->rh_port_status[port - 1] & (~(1<<feature)));
+	/// \TODO any error?
+	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){
+	instance->address = address;
+	return EOK;
+}
+
+/**
+ * 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
+				|| 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,
+					setup_request->request == USB_DEVREQ_SET_FEATURE);
+		}
+		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,
+					setup_request->request == USB_DEVREQ_SET_FEATURE);
+		}
+		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){
+	int opResult;
+	if (request->setup_buffer) {
+		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;
+		if(
+			setup_request->request == USB_DEVREQ_GET_STATUS
+			|| setup_request->request == USB_DEVREQ_GET_DESCRIPTOR
+			|| setup_request->request == USB_DEVREQ_GET_CONFIGURATION
+		){
+			usb_log_debug("processing request with output\n");
+			opResult = process_request_with_output(instance,request);
+		}else if(
+			setup_request->request == USB_DEVREQ_CLEAR_FEATURE
+			|| setup_request->request == USB_DEVREQ_SET_FEATURE
+			|| setup_request->request == USB_DEVREQ_SET_ADDRESS
+		){
+			usb_log_debug("processing request without additional data\n");
+			opResult = process_request_without_data(instance,request);
+		}else if(setup_request->request == USB_DEVREQ_SET_DESCRIPTOR
+				|| setup_request->request == USB_DEVREQ_SET_CONFIGURATION
+		){
+			usb_log_debug("processing request with input\n");
+			opResult = process_request_with_input(instance,request);
+		}else{
+			usb_log_warning("received unsuported request: %d\n",
+					setup_request->request
+					);
+			opResult = ENOTSUP;
+		}
+	}else{
+		usb_log_error("root hub received empty transaction?");
+		opResult = EINVAL;
+	}
+	return opResult;
+}
+
+/**
+ * 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->transfer_type == USB_TRANSFER_CONTROL){
+		usb_log_info("Root hub got CONTROL packet\n");
+		opResult = process_ctrl_request(instance,request);
+	}else if(request->transfer_type == USB_TRANSFER_INTERRUPT){
+		usb_log_info("Root hub got INTERRUPT packet\n");
+		void * buffer;
+		create_interrupt_mask(instance, &buffer,
+			&(request->transfered_size));
+		memcpy(request->transport_buffer,buffer, request->transfered_size);
+		opResult = EOK;
+	}else{
+		opResult = EINVAL;
+	}
+	usb_transfer_batch_finish(request, opResult);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+
+
+void rh_interrupt(rh_t *instance)
+{
+	usb_log_info("Whoa whoa wait, I`m not supposed to receive any interrupts, am I?\n");
+	/* TODO: implement? */
+}
+/**
+ * @}
+ */
Index: uspace/drv/ohci/root_hub.h
===================================================================
--- uspace/drv/ohci/root_hub.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/root_hub.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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
+ */
+#ifndef DRV_OHCI_ROOT_HUB_H
+#define DRV_OHCI_ROOT_HUB_H
+
+#include <usb/usb.h>
+#include <usb/devdrv.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;
+	/** ddf device information */
+	ddf_dev_t *device;
+	/** hub port count */
+	int port_count;
+	/** hubs descriptors */
+	usb_device_descriptors_t descriptors;
+} rh_t;
+
+int rh_init(rh_t *instance, ddf_dev_t *dev, 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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/ohci/utils/malloc32.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,96 @@
+/*
+ * 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 usb
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#ifndef DRV_UHCI_TRANSLATOR_H
+#define DRV_UHCI_TRANSLATOR_H
+
+#include <assert.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)
+{
+	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 alligned and big enough memory place, NULL on failure.
+ */
+static inline void * malloc32(size_t size)
+	{ return memalign(UHCI_STRCUTURES_ALIGNMENT, size); }
+/*----------------------------------------------------------------------------*/
+/** Physical mallocator simulator
+ *
+ * @param[in] addr Address of the place allocated by malloc32
+ */
+static inline void free32(void *addr)
+	{ if (addr) 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);
+	assert(free_address);
+	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/pciintel/pci.c
===================================================================
--- uspace/drv/pciintel/pci.c	(revision ebcb05a569ef3a706553a41bd6a44277cc63277f)
+++ uspace/drv/pciintel/pci.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 +89,90 @@
 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;
+	for (i = 0; i < dev_data->hw_resources.count; i++) {
+		if (dev_data->hw_resources.resources[i].type == INTERRUPT) {
+			int irq = dev_data->hw_resources.resources[i].res.interrupt.irq;
+			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 +182,17 @@
 };
 
-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 +388,14 @@
 	/* 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 +413,5 @@
 	/* 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 +663,5 @@
 	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 +735,6 @@
 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 ebcb05a569ef3a706553a41bd6a44277cc63277f)
+++ uspace/drv/rootvirt/devices.def	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -22,2 +22,9 @@
 },
 #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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,46 @@
+#
+# 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 = $(LIBDRV_PREFIX)/libdrv.a $(LIBUSB_PREFIX)/libusb.a
+EXTRA_CFLAGS += -I$(LIBDRV_PREFIX)/include -I$(LIBUSB_PREFIX)/include -I.
+BINARY = uhci-hcd
+
+SOURCES = \
+	iface.c \
+	main.c \
+	transfer_list.c \
+	uhci.c \
+	hc.c \
+	root_hub.c \
+	hw_struct/transfer_descriptor.c \
+	utils/slab.c \
+	pci.c \
+	batch.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/uhci-hcd/batch.c
===================================================================
--- uspace/drv/uhci-hcd/batch.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/batch.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,462 @@
+/*
+ * 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 transaction 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
+
+typedef struct uhci_batch {
+	qh_t *qh;
+	td_t *tds;
+	size_t transfers;
+	usb_device_keeper_t *manager;
+} uhci_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);
+static void batch_call_in_and_dispose(usb_transfer_batch_t *instance);
+static void batch_call_out_and_dispose(usb_transfer_batch_t *instance);
+
+
+/** Allocate memory and initialize internal data structure.
+ *
+ * @param[in] fun DDF function to pass to callback.
+ * @param[in] target Device and endpoint target of the transaction.
+ * @param[in] transfer_type Interrupt, Control or Bulk.
+ * @param[in] max_packet_size maximum allowed size of data transfers.
+ * @param[in] speed Speed of the transaction.
+ * @param[in] buffer Data source/destination.
+ * @param[in] 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 transaction completion
+ * @param[in] func_out function to call on outbound transaction completion
+ * @param[in] arg additional parameter to func_in or func_out
+ * @param[in] manager Pointer to toggle management structure.
+ * @return Valid pointer if all substructures were successfully created,
+ * NULL otherwise.
+ *
+ * Determines the number of needed transfers (TDs). Prepares a transport buffer
+ * (that is accessible by the hardware). Initializes parameters needed for the
+ * transaction and callback.
+ */
+usb_transfer_batch_t * batch_get(ddf_fun_t *fun, usb_target_t target,
+    usb_transfer_type_t transfer_type, size_t max_packet_size,
+    usb_speed_t speed, char *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,
+    usb_device_keeper_t *manager
+    )
+{
+	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 (instance) { \
+			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, target, transfer_type, speed, max_packet_size,
+	    buffer, NULL, buffer_size, NULL, setup_size, func_in,
+	    func_out, arg, fun, NULL);
+
+
+	uhci_batch_t *data = malloc(sizeof(uhci_batch_t));
+	CHECK_NULL_DISPOSE_RETURN(instance,
+	    "Failed to allocate batch instance.\n");
+	bzero(data, sizeof(uhci_batch_t));
+	data->manager = manager;
+	instance->private_data = data;
+
+	data->transfers = (buffer_size + max_packet_size - 1) / max_packet_size;
+	if (transfer_type == USB_TRANSFER_CONTROL) {
+		data->transfers += 2;
+	}
+
+	data->tds = malloc32(sizeof(td_t) * data->transfers);
+	CHECK_NULL_DISPOSE_RETURN(
+	    data->tds, "Failed to allocate transfer descriptors.\n");
+	bzero(data->tds, sizeof(td_t) * data->transfers);
+
+	data->qh = malloc32(sizeof(qh_t));
+	CHECK_NULL_DISPOSE_RETURN(data->qh,
+	    "Failed to allocate batch queue head.\n");
+	qh_init(data->qh);
+	qh_set_element_td(data->qh, addr_to_phys(data->tds));
+
+	if (buffer_size > 0) {
+		instance->transport_buffer = malloc32(buffer_size);
+		CHECK_NULL_DISPOSE_RETURN(instance->transport_buffer,
+		    "Failed to allocate device accessible buffer.\n");
+	}
+
+	if (setup_size > 0) {
+		instance->setup_buffer = malloc32(setup_size);
+		CHECK_NULL_DISPOSE_RETURN(instance->setup_buffer,
+		    "Failed to allocate device accessible setup buffer.\n");
+		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 TS
+ * is reached.
+ */
+bool batch_is_complete(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	uhci_batch_t *data = instance->private_data;
+	assert(data);
+
+	usb_log_debug2("Batch(%p) checking %d transfer(s) for completion.\n",
+	    instance, data->transfers);
+	instance->transfered_size = 0;
+	size_t i = 0;
+	for (;i < data->transfers; ++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(%d):%x.\n",
+			    instance, i, data->tds[i].status);
+			td_print_status(&data->tds[i]);
+
+			usb_device_keeper_set_toggle(data->manager,
+			    instance->target, instance->direction,
+			    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 transaction.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Uses genercir 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->transport_buffer, instance->buffer,
+	    instance->buffer_size);
+	batch_control(instance, USB_PID_OUT, USB_PID_IN);
+	instance->next_step = batch_call_out_and_dispose;
+	usb_log_debug("Batch(%p) CONTROL WRITE initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepares control read transaction.
+ *
+ * @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 = batch_call_in_and_dispose;
+	usb_log_debug("Batch(%p) CONTROL READ initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare interrupt in transaction.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transaction with PID_IN.
+ */
+void batch_interrupt_in(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->direction = USB_DIRECTION_IN;
+	batch_data(instance, USB_PID_IN);
+	instance->next_step = batch_call_in_and_dispose;
+	usb_log_debug("Batch(%p) INTERRUPT IN initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare interrupt out transaction.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transaction with PID_OUT.
+ */
+void batch_interrupt_out(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->direction = USB_DIRECTION_OUT;
+	/* We are data out, we are supposed to provide data */
+	memcpy(instance->transport_buffer, instance->buffer,
+	    instance->buffer_size);
+	batch_data(instance, USB_PID_OUT);
+	instance->next_step = batch_call_out_and_dispose;
+	usb_log_debug("Batch(%p) INTERRUPT OUT initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare bulk in transaction.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transaction with PID_IN.
+ */
+void batch_bulk_in(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	batch_data(instance, USB_PID_IN);
+	instance->direction = USB_DIRECTION_IN;
+	instance->next_step = batch_call_in_and_dispose;
+	usb_log_debug("Batch(%p) BULK IN initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare bulk out transaction.
+ *
+ * @param[in] instance Batch structure to use.
+ *
+ * Data transaction with PID_OUT.
+ */
+void batch_bulk_out(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	instance->direction = USB_DIRECTION_OUT;
+	/* We are data out, we are supposed to provide data */
+	memcpy(instance->transport_buffer, instance->buffer,
+	    instance->buffer_size);
+	batch_data(instance, USB_PID_OUT);
+	instance->next_step = batch_call_out_and_dispose;
+	usb_log_debug("Batch(%p) BULK OUT initialized.\n", instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare generic data transaction
+ *
+ * @param[in] instance Batch structure to use.
+ * @param[in] pid Pid to use for data transfers.
+ *
+ * Packets 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_batch_t *data = instance->private_data;
+	assert(data);
+
+	const bool low_speed = instance->speed == USB_SPEED_LOW;
+	int toggle = usb_device_keeper_get_toggle(
+	    data->manager, instance->target, instance->direction);
+	assert(toggle == 0 || toggle == 1);
+
+	size_t transfer = 0;
+	size_t remain_size = instance->buffer_size;
+	while (remain_size > 0) {
+		char *trans_data =
+		    instance->transport_buffer + instance->buffer_size
+		    - remain_size;
+
+		const size_t packet_size =
+		    (instance->max_packet_size > remain_size) ?
+		    remain_size : instance->max_packet_size;
+
+		td_t *next_transfer = (transfer + 1 < data->transfers)
+		    ? &data->tds[transfer + 1] : NULL;
+
+		assert(transfer < data->transfers);
+		assert(packet_size <= remain_size);
+
+		td_init(
+		    &data->tds[transfer], DEFAULT_ERROR_COUNT, packet_size,
+		    toggle, false, low_speed, instance->target, pid, trans_data,
+		    next_transfer);
+
+
+		toggle = 1 - toggle;
+		remain_size -= packet_size;
+		++transfer;
+	}
+	td_set_ioc(&data->tds[transfer - 1]);
+	usb_device_keeper_set_toggle(data->manager, instance->target,
+	    instance->direction, toggle);
+}
+/*----------------------------------------------------------------------------*/
+/** Prepare generic control transaction
+ *
+ * @param[in] instance Batch structure to use.
+ * @param[in] data_stage Pid to use for data transfers.
+ * @param[in] status_stage Pid to use for data transfers.
+ *
+ * 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_batch_t *data = instance->private_data;
+	assert(data);
+	assert(data->transfers >= 2);
+
+	const bool low_speed = instance->speed == USB_SPEED_LOW;
+	int toggle = 0;
+	/* setup stage */
+	td_init(
+	    data->tds, DEFAULT_ERROR_COUNT, instance->setup_size, toggle, false,
+	    low_speed, instance->target, USB_PID_SETUP, instance->setup_buffer,
+	    &data->tds[1]);
+
+	/* data stage */
+	size_t transfer = 1;
+	size_t remain_size = instance->buffer_size;
+	while (remain_size > 0) {
+		char *control_data =
+		    instance->transport_buffer + instance->buffer_size
+		    - remain_size;
+
+		toggle = 1 - toggle;
+
+		const size_t packet_size =
+		    (instance->max_packet_size > remain_size) ?
+		    remain_size : instance->max_packet_size;
+
+		td_init(
+		    &data->tds[transfer], DEFAULT_ERROR_COUNT, packet_size,
+		    toggle, false, low_speed, instance->target, data_stage,
+		    control_data, &data->tds[transfer + 1]);
+
+		++transfer;
+		assert(transfer < data->transfers);
+		assert(packet_size <= remain_size);
+		remain_size -= packet_size;
+	}
+
+	/* status stage */
+	assert(transfer == data->transfers - 1);
+
+	td_init(
+	    &data->tds[transfer], DEFAULT_ERROR_COUNT, 0, 1, false, low_speed,
+	    instance->target, status_stage, NULL, NULL);
+	td_set_ioc(&data->tds[transfer]);
+
+	usb_log_debug2("Control last TD status: %x.\n",
+	    data->tds[transfer].status);
+}
+/*----------------------------------------------------------------------------*/
+qh_t * batch_qh(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	uhci_batch_t *data = instance->private_data;
+	assert(data);
+	return data->qh;
+}
+/*----------------------------------------------------------------------------*/
+/** Helper function calls callback and correctly disposes of batch structure.
+ *
+ * @param[in] instance Batch structure to use.
+ */
+void batch_call_in_and_dispose(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	usb_transfer_batch_call_in(instance);
+	batch_dispose(instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Helper function calls callback and correctly disposes of batch structure.
+ *
+ * @param[in] instance Batch structure to use.
+ */
+void batch_call_out_and_dispose(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	usb_transfer_batch_call_out(instance);
+	batch_dispose(instance);
+}
+/*----------------------------------------------------------------------------*/
+/** Correctly dispose all used data structures.
+ *
+ * @param[in] instance Batch structure to use.
+ */
+void batch_dispose(usb_transfer_batch_t *instance)
+{
+	assert(instance);
+	uhci_batch_t *data = instance->private_data;
+	assert(data);
+	usb_log_debug("Batch(%p) disposing.\n", instance);
+	/* free32 is NULL safe */
+	free32(data->tds);
+	free32(data->qh);
+	free32(instance->setup_buffer);
+	free32(instance->transport_buffer);
+	free(data);
+	free(instance);
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/batch.h
===================================================================
--- uspace/drv/uhci-hcd/batch.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/batch.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver USB transaction structure
+ */
+#ifndef DRV_UHCI_BATCH_H
+#define DRV_UHCI_BATCH_H
+
+#include <adt/list.h>
+
+#include <usbhc_iface.h>
+#include <usb/usb.h>
+#include <usb/host/device_keeper.h>
+#include <usb/host/batch.h>
+
+#include "hw_struct/queue_head.h"
+
+usb_transfer_batch_t * batch_get(
+    ddf_fun_t *fun,
+		usb_target_t target,
+    usb_transfer_type_t transfer_type,
+		size_t max_packet_size,
+    usb_speed_t speed,
+		char *buffer,
+		size_t 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,
+		usb_device_keeper_t *manager
+		);
+
+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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/hc.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,520 @@
+/*
+ * 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 <usb/ddfiface.h>
+#include <usb_iface.h>
+
+#include "hc.h"
+
+static irq_cmd_t uhci_cmds[] = {
+	{
+		.cmd = CMD_PIO_READ_16,
+		.addr = NULL, /* patched for every instance */
+		.dstarg = 1
+	},
+	{
+		.cmd = CMD_PIO_WRITE_16,
+		.addr = NULL, /* pathed for every instance */
+		.value = 0x1f
+	},
+	{
+		.cmd = CMD_ACCEPT
+	}
+};
+/*----------------------------------------------------------------------------*/
+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);
+
+static bool usb_is_allowed(
+    bool low_speed, usb_transfer_type_t transfer, size_t size);
+/*----------------------------------------------------------------------------*/
+/** Initialize UHCI hcd driver structure
+ *
+ * @param[in] instance Memory place to initialize.
+ * @param[in] fun DDF function.
+ * @param[in] regs Address of I/O control registers.
+ * @param[in] size Size of I/O control registers.
+ * @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, ddf_fun_t *fun,
+    void *regs, size_t reg_size, bool interrupts)
+{
+	assert(reg_size >= sizeof(regs_t));
+	int ret;
+
+#define CHECK_RET_DEST_FUN_RETURN(ret, message...) \
+	if (ret != EOK) { \
+		usb_log_error(message); \
+		if (instance->ddf_instance) \
+			ddf_fun_destroy(instance->ddf_instance); \
+		return ret; \
+	} else (void) 0
+
+	instance->hw_interrupts = interrupts;
+	instance->hw_failures = 0;
+
+	/* Setup UHCI function. */
+	instance->ddf_instance = fun;
+
+	/* allow access to hc control registers */
+	regs_t *io;
+	ret = pio_enable(regs, reg_size, (void**)&io);
+	CHECK_RET_DEST_FUN_RETURN(ret,
+	    "Failed(%d) to gain access to registers at %p: %s.\n",
+	    ret, str_error(ret), io);
+	instance->registers = io;
+	usb_log_debug("Device registers at %p(%u) accessible.\n",
+	    io, reg_size);
+
+	ret = hc_init_mem_structures(instance);
+	CHECK_RET_DEST_FUN_RETURN(ret,
+	    "Failed to initialize UHCI memory structures.\n");
+
+	hc_init_hw(instance);
+	if (!interrupts) {
+		instance->cleaner =
+		    fibril_create(hc_interrupt_emulator, instance);
+		fibril_add_ready(instance->cleaner);
+	} else {
+		/* TODO: enable interrupts here */
+	}
+
+	instance->debug_checker =
+	    fibril_create(hc_debug_checker, instance);
+//	fibril_add_ready(instance->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_CRC | UHCI_INTR_COMPLETE | UHCI_INTR_SHORT_PACKET);
+	}
+
+	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_DEST_CMDS_RETURN(ret, message...) \
+	if (ret != EOK) { \
+		usb_log_error(message); \
+		if (instance->interrupt_code.cmds != NULL) \
+			free(instance->interrupt_code.cmds); \
+		return ret; \
+	} else (void) 0
+
+	/* Init interrupt code */
+	instance->interrupt_code.cmds = malloc(sizeof(uhci_cmds));
+	int ret = (instance->interrupt_code.cmds == NULL) ? ENOMEM : EOK;
+	CHECK_RET_DEST_CMDS_RETURN(ret,
+	    "Failed to allocate interrupt cmds space.\n");
+
+	{
+		irq_cmd_t *interrupt_commands = instance->interrupt_code.cmds;
+		memcpy(interrupt_commands, uhci_cmds, sizeof(uhci_cmds));
+		interrupt_commands[0].addr =
+		    (void*)&instance->registers->usbsts;
+		interrupt_commands[1].addr =
+		    (void*)&instance->registers->usbsts;
+		instance->interrupt_code.cmdcount =
+		    sizeof(uhci_cmds) / sizeof(irq_cmd_t);
+	}
+
+	/* Init transfer lists */
+	ret = hc_init_transfer_lists(instance);
+	CHECK_RET_DEST_CMDS_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 ? EOK : ENOMEM;
+	CHECK_RET_DEST_CMDS_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 =
+	  instance->transfers_interrupt.queue_head_pa
+	  | LINK_POINTER_QUEUE_HEAD_FLAG;
+
+	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");
+
+	return EOK;
+#undef CHECK_RET_DEST_CMDS_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 CHECK_RET_CLEAR_RETURN(ret, message...) \
+	if (ret != EOK) { \
+		usb_log_error(message); \
+		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; \
+	} else (void) 0
+
+	/* initialize TODO: check errors */
+	int ret;
+	ret = transfer_list_init(&instance->transfers_bulk_full, "BULK_FULL");
+	CHECK_RET_CLEAR_RETURN(ret, "Failed to init BULK list.");
+
+	ret = transfer_list_init(
+	    &instance->transfers_control_full, "CONTROL_FULL");
+	CHECK_RET_CLEAR_RETURN(ret, "Failed to init CONTROL FULL list.");
+
+	ret = transfer_list_init(
+	    &instance->transfers_control_slow, "CONTROL_SLOW");
+	CHECK_RET_CLEAR_RETURN(ret, "Failed to init CONTROL SLOW list.");
+
+	ret = transfer_list_init(&instance->transfers_interrupt, "INTERRUPT");
+	CHECK_RET_CLEAR_RETURN(ret, "Failed to init INTERRUPT list.");
+
+	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*/
+#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);
+	const int low_speed = (batch->speed == USB_SPEED_LOW);
+	if (!usb_is_allowed(
+	    low_speed, batch->transfer_type, batch->max_packet_size)) {
+		usb_log_warning(
+		    "Invalid USB transfer specified %s SPEED %d %zu.\n",
+		    low_speed ? "LOW" : "FULL" , batch->transfer_type,
+		    batch->max_packet_size);
+		return ENOTSUP;
+	}
+	/* TODO: check available bandwidth here */
+
+	transfer_list_t *list =
+	    instance->transfers[batch->speed][batch->transfer_type];
+	assert(list);
+	if (batch->transfer_type == USB_TRANSFER_CONTROL) {
+		usb_device_keeper_use_control(
+		    &instance->manager, batch->target.address);
+	}
+	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);
+	/* TODO: Resume interrupts are not supported */
+	/* Lower 2 bits are transaction error and transaction complete */
+	if (status & 0x3) {
+		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);
+			if (batch->transfer_type == USB_TRANSFER_CONTROL) {
+				usb_device_keeper_release_control(
+				    &instance->manager, batch->target.address);
+			}
+			batch->next_step(batch);
+		}
+	}
+	/* bits 4 and 5 indicate hc error */
+	if (status & 0x18) {
+		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 = (hc_t*)arg;
+	assert(instance);
+
+	while (1) {
+		/* read and ack interrupts */
+		uint16_t status = pio_read_16(&instance->registers->usbsts);
+		pio_write_16(&instance->registers->usbsts, 0x1f);
+		if (status != 0)
+			usb_log_debug2("UHCI status: %x.\n", status);
+		hc_interrupt(instance, status);
+		async_usleep(UHCI_CLEANER_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 = (hc_t*)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);
+		}
+
+		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",
+			    frame_list, 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",
+			    expected_pa, frnum, 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",
+			    expected_pa, 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",
+			    expected_pa, 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",
+			    expected_pa, real_pa);
+		}
+		async_usleep(UHCI_DEBUGER_TIMEOUT);
+	}
+	return EOK;
+#undef QH
+}
+/*----------------------------------------------------------------------------*/
+/** Check transfers for USB validity
+ *
+ * @param[in] low_speed Transfer speed.
+ * @param[in] transfer Transer type
+ * @param[in] size Size of data packets
+ * @return True if transaction is allowed by USB specs, false otherwise
+ */
+bool usb_is_allowed(
+    bool low_speed, usb_transfer_type_t transfer, size_t size)
+{
+	/* see USB specification chapter 5.5-5.8 for magic numbers used here */
+	switch(transfer)
+	{
+	case USB_TRANSFER_ISOCHRONOUS:
+		return (!low_speed && size < 1024);
+	case USB_TRANSFER_INTERRUPT:
+		return size <= (low_speed ? 8 : 64);
+	case USB_TRANSFER_CONTROL: /* device specifies its own max size */
+		return (size <= (low_speed ? 8 : 64));
+	case USB_TRANSFER_BULK: /* device specifies its own max size */
+		return (!low_speed && size <= 64);
+	}
+	return false;
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/hc.h
===================================================================
--- uspace/drv/uhci-hcd/hc.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/hc.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 drvusbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI host controller driver structure
+ */
+#ifndef DRV_UHCI_UHCI_HC_H
+#define DRV_UHCI_UHCI_HC_H
+
+#include <fibril.h>
+#include <fibril_synch.h>
+#include <adt/list.h>
+#include <ddi.h>
+
+#include <usbhc_iface.h>
+#include <usb/host/device_keeper.h>
+
+#include "batch.h"
+#include "transfer_list.h"
+
+typedef struct uhci_regs {
+	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)
+
+	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)
+
+	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)
+
+	uint16_t frnum;
+	uint32_t flbaseadd;
+	uint8_t sofmod;
+} regs_t;
+
+#define UHCI_FRAME_LIST_COUNT 1024
+#define UHCI_CLEANER_TIMEOUT 10000
+#define UHCI_DEBUGER_TIMEOUT 5000000
+#define UHCI_ALLOWED_HW_FAIL 5
+
+typedef struct hc {
+	usb_device_keeper_t manager;
+
+	regs_t *registers;
+
+	link_pointer_t *frame_list;
+
+	transfer_list_t transfers_bulk_full;
+	transfer_list_t transfers_control_full;
+	transfer_list_t transfers_control_slow;
+	transfer_list_t transfers_interrupt;
+
+	transfer_list_t *transfers[2][4];
+
+	irq_code_t interrupt_code;
+
+	fid_t cleaner;
+	fid_t debug_checker;
+	bool hw_interrupts;
+	unsigned hw_failures;
+
+	ddf_fun_t *ddf_instance;
+} hc_t;
+
+int hc_init(hc_t *instance, ddf_fun_t *fun,
+    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)
+	{ return (hc_t*)fun->driver_data; }
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/hw_struct/link_pointer.h
===================================================================
--- uspace/drv/uhci-hcd/hw_struct/link_pointer.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/hw_struct/link_pointer.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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_LINK_POINTER_H
+#define DRV_UHCI_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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/hw_struct/queue_head.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,118 @@
+/*
+ * 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 drv usbuhcihc
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#ifndef DRV_UHCI_QH_H
+#define DRV_UHCI_QH_H
+
+/* libc */
+#include <assert.h>
+
+#include "link_pointer.h"
+#include "utils/malloc32.h"
+
+typedef struct queue_head {
+	volatile link_pointer_t next;
+	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] pa Physical address of the next queue head.
+ *
+ * Adds proper flag. If the pointer is NULL or terminal, sets next to terminal
+ * NULL.
+ */
+static inline void qh_set_next_qh(qh_t *instance, uint32_t pa)
+{
+	/* Address is valid and not terminal */
+	if (pa && ((pa & LINK_POINTER_TERMINATE_FLAG) == 0)) {
+		instance->next = LINK_POINTER_QH(pa);
+	} else {
+		instance->next = LINK_POINTER_TERM;
+	}
+}
+/*----------------------------------------------------------------------------*/
+/** Set queue head element pointer
+ *
+ * @param[in] instance qh_t structure to initialize.
+ * @param[in] pa Physical address of the next queue head.
+ *
+ * Adds proper flag. If the pointer is NULL or terminal, sets element
+ * to terminal NULL.
+ */
+static inline void qh_set_element_qh(qh_t *instance, uint32_t pa)
+{
+	/* Address is valid and not terminal */
+	if (pa && ((pa & LINK_POINTER_TERMINATE_FLAG) == 0)) {
+		instance->element = LINK_POINTER_QH(pa);
+	} else {
+		instance->element = LINK_POINTER_TERM;
+	}
+}
+/*----------------------------------------------------------------------------*/
+/** Set queue head element pointer
+ *
+ * @param[in] instance qh_t structure to initialize.
+ * @param[in] pa Physical address of the TD structure.
+ *
+ * Adds proper flag. If the pointer is NULL or terminal, sets element
+ * to terminal NULL.
+ */
+static inline void qh_set_element_td(qh_t *instance, uint32_t pa)
+{
+	if (pa && ((pa & LINK_POINTER_TERMINATE_FLAG) == 0)) {
+		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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/hw_struct/transfer_descriptor.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,173 @@
+/*
+ * 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 transaction 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, is 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(%#x):%s %d,%s%s%s%s%s%s%s%s%s%s%s %d.\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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/hw_struct/transfer_descriptor.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,161 @@
+/*
+ * 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_TRANSFER_DESCRIPTOR_H
+#define DRV_UHCI_TRANSFER_DESCRIPTOR_H
+
+#include <mem.h>
+#include <usb/usb.h>
+
+#include "link_pointer.h"
+
+/** UHCI Transfer Descriptor */
+typedef struct transfer_descriptor {
+	link_pointer_t next;
+
+	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
+
+	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 )
+
+	volatile uint32_t buffer_ptr;
+
+	/* there is 16 bytes of data available here, according to UHCI
+	 * Design guide, 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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/iface.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,378 @@
+/*
+ * 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 "iface.h"
+#include "hc.h"
+
+/** Reserve default address interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] speed Speed to associate with the new default address.
+ * @return Error code.
+ */
+static int reserve_default_address(ddf_fun_t *fun, usb_speed_t speed)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Default address request with speed %d.\n", speed);
+	usb_device_keeper_reserve_default_address(&hc->manager, speed);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** Release default address interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @return Error code.
+ */
+static int release_default_address(ddf_fun_t *fun)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_log_debug("Default address release.\n");
+	usb_device_keeper_release_default_address(&hc->manager);
+	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-%d.\n", address, handle);
+	usb_device_keeper_bind(&hc->manager, address, handle);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** 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;
+}
+/*----------------------------------------------------------------------------*/
+/** Interrupt out transaction interface function
+ *
+ * @param[in] fun DDF function that was called.
+ * @param[in] target USB device to write to.
+ * @param[in] max_packet_size maximum size of data packet the device accepts
+ * @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, size_t max_packet_size, void *data,
+    size_t size, usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+
+	usb_log_debug("Interrupt OUT %d:%d %zu(%zu).\n",
+	    target.address, target.endpoint, size, max_packet_size);
+
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_INTERRUPT, max_packet_size,
+	        speed, data, size, NULL, 0, NULL, callback, arg, &hc->manager);
+	if (!batch)
+		return ENOMEM;
+	batch_interrupt_out(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		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[in] max_packet_size maximum size of data packet the device accepts
+ * @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, size_t max_packet_size, void *data,
+    size_t size, usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+	usb_log_debug("Interrupt IN %d:%d %zu(%zu).\n",
+	    target.address, target.endpoint, size, max_packet_size);
+
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_INTERRUPT, max_packet_size,
+	        speed, data, size, NULL, 0, callback, NULL, arg, &hc->manager);
+	if (!batch)
+		return ENOMEM;
+	batch_interrupt_in(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		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] max_packet_size maximum size of data packet the device accepts
+ * @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, size_t max_packet_size, void *data,
+    size_t size, usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+
+	usb_log_debug("Bulk OUT %d:%d %zu(%zu).\n",
+	    target.address, target.endpoint, size, max_packet_size);
+
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_BULK, max_packet_size, speed,
+	        data, size, NULL, 0, NULL, callback, arg, &hc->manager);
+	if (!batch)
+		return ENOMEM;
+	batch_bulk_out(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		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[in] max_packet_size maximum size of data packet the device accepts
+ * @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, size_t max_packet_size, void *data,
+    size_t size, usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+	usb_log_debug("Bulk IN %d:%d %zu(%zu).\n",
+	    target.address, target.endpoint, size, max_packet_size);
+
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_BULK, max_packet_size, speed,
+	        data, size, NULL, 0, callback, NULL, arg, &hc->manager);
+	if (!batch)
+		return ENOMEM;
+	batch_bulk_in(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		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] max_packet_size maximum size of data packet the device accepts.
+ * @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, size_t max_packet_size,
+    void *setup_data, size_t setup_size, void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+	usb_log_debug("Control WRITE (%d) %d:%d %zu(%zu).\n",
+	    speed, target.address, target.endpoint, size, max_packet_size);
+
+	if (setup_size != 8)
+		return EINVAL;
+
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_CONTROL, max_packet_size, speed,
+	        data, size, setup_data, setup_size, NULL, callback, arg,
+	        &hc->manager);
+	if (!batch)
+		return ENOMEM;
+	usb_device_keeper_reset_if_need(&hc->manager, target, setup_data);
+	batch_control_write(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		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] max_packet_size maximum size of data packet the device accepts.
+ * @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, size_t max_packet_size,
+    void *setup_data, size_t setup_size, void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	assert(fun);
+	hc_t *hc = fun_to_hc(fun);
+	assert(hc);
+	usb_speed_t speed =
+	    usb_device_keeper_get_speed(&hc->manager, target.address);
+
+	usb_log_debug("Control READ(%d) %d:%d %zu(%zu).\n",
+	    speed, target.address, target.endpoint, size, max_packet_size);
+	usb_transfer_batch_t *batch =
+	    batch_get(fun, target, USB_TRANSFER_CONTROL, max_packet_size, speed,
+	        data, size, setup_data, setup_size, callback, NULL, arg,
+		&hc->manager);
+	if (!batch)
+		return ENOMEM;
+	batch_control_read(batch);
+	const int ret = hc_schedule(hc, batch);
+	if (ret != EOK) {
+		batch_dispose(batch);
+	}
+	return ret;
+}
+/*----------------------------------------------------------------------------*/
+usbhc_iface_t hc_iface = {
+	.reserve_default_address = reserve_default_address,
+	.release_default_address = release_default_address,
+	.request_address = request_address,
+	.bind_address = bind_address,
+	.release_address = release_address,
+
+	.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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/iface.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,104 @@
+/*
+ * 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 "iface.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_debug("uhci_add_device() called\n");
+	assert(device);
+	uhci_t *uhci = malloc(sizeof(uhci_t));
+	if (uhci == NULL) {
+		usb_log_error("Failed to allocate UHCI driver.\n");
+		return ENOMEM;
+	}
+
+	int ret = uhci_init(uhci, device);
+	if (ret != EOK) {
+		usb_log_error("Failed to initialize UHCI driver: %s.\n",
+		    str_error(ret));
+		return ret;
+	}
+	device->driver_data = uhci;
+
+	usb_log_info("Controlling new UHCI device `%s'.\n", device->name);
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** 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 driver.\n");
+
+	sleep(3); /* TODO: remove in final version */
+	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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/pci.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,165 @@
+/*
+ * 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 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(ddf_dev_t *dev,
+    uintptr_t *io_reg_address, size_t *io_reg_size,
+    int *irq_no)
+{
+	assert(dev != NULL);
+
+	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) {
+		goto leave;
+	}
+
+	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++) {
+		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: %llx %zu.\n",
+			    res->res.io_range.address, res->res.io_range.size);
+			io_found = true;
+
+		default:
+			break;
+		}
+	}
+
+	if (!io_found || !irq_found) {
+		rc = ENOENT;
+		goto leave;
+	}
+
+	*io_reg_address = io_address;
+	*io_reg_size = io_size;
+	*irq_no = irq;
+
+	rc = EOK;
+leave:
+	async_hangup(parent_phone);
+
+	return rc;
+}
+/*----------------------------------------------------------------------------*/
+/** Call 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);
+	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(ddf_dev_t *device)
+{
+	assert(device);
+	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,
+	 * write all WC bits in USB legacy register */
+	sysarg_t address = 0xc0;
+	sysarg_t value = 0x8f00;
+
+	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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/pci.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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(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/uhci-hcd/root_hub.c
===================================================================
--- uspace/drv/uhci-hcd/root_hub.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/root_hub.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,81 @@
+/*
+ * 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 to create root hub match string.\n");
+		return ENOMEM;
+	}
+
+	ret = ddf_fun_add_match_id(fun, match_str, 100);
+	if (ret != EOK) {
+		usb_log_error("Failed(%d) to add root hub match id: %s\n",
+		    ret, str_error(ret));
+		return ret;
+	}
+
+	hw_resource_list_t *resource_list = &instance->resource_list;
+	resource_list->count = 1;
+	resource_list->resources = &instance->io_regs;
+	assert(resource_list->resources);
+	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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/root_hub.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,52 @@
+/*
+ * 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_UHCI_RH_H
+#define DRV_UHCI_UHCI_RH_H
+
+#include <ddf/driver.h>
+#include <ops/hw_res.h>
+
+typedef struct rh {
+	hw_resource_list_t 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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/transfer_list.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,228 @@
+/*
+ * 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 "transfer_list.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;
+	}
+	instance->queue_head_pa = addr_to_phys(instance->queue_head);
+	usb_log_debug2("Transfer list %s setup with QH: %p(%p).\n",
+	    name, instance->queue_head, instance->queue_head_pa);
+
+	qh_init(instance->queue_head);
+	list_initialize(&instance->batch_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.
+ * @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(next);
+	if (!instance->queue_head)
+		return;
+	/* Set both queue_head.next to point to the follower */
+	qh_set_next_qh(instance->queue_head, next->queue_head_pa);
+}
+/*----------------------------------------------------------------------------*/
+/** Submit transfer batch to the list and queue.
+ *
+ * @param[in] instance List to use.
+ * @param[in] batch Transfer batch to submit.
+ * @return Error code
+ *
+ * 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 = list_get_instance(
+		    instance->batch_list.prev, usb_transfer_batch_t, link);
+		last_qh = batch_qh(last);
+	}
+	const uint32_t pa = addr_to_phys(batch_qh(batch));
+	assert((pa & LINK_POINTER_ADDRESS_MASK) == pa);
+
+	/* keep link */
+	batch_qh(batch)->next = last_qh->next;
+	qh_set_next_qh(last_qh, pa);
+
+	asm volatile ("": : :"memory");
+
+	/* Add to the driver 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);
+}
+/*----------------------------------------------------------------------------*/
+/** Check list for finished batches.
+ *
+ * @param[in] instance List to use.
+ * @return Error code
+ *
+ * Creates a local list of finished batches and calls next_step on each and
+ * every one. This is safer because next_step may theoretically access
+ * this transfer list leading to the deadlock if its done inline.
+ */
+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 *next = current->next;
+		usb_transfer_batch_t *batch =
+		    list_get_instance(current, usb_transfer_batch_t, link);
+
+		if (batch_is_complete(batch)) {
+			/* Save for post-processing */
+			transfer_list_remove_batch(instance, batch);
+			list_append(current, done);
+		}
+		current = next;
+	}
+	fibril_mutex_unlock(&instance->guard);
+
+}
+/*----------------------------------------------------------------------------*/
+/** Walk the list and abort all batches.
+ *
+ * @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 *current = instance->batch_list.next;
+		usb_transfer_batch_t *batch =
+		    list_get_instance(current, usb_transfer_batch_t, link);
+		transfer_list_remove_batch(instance, batch);
+		usb_transfer_batch_finish(batch, EIO);
+	}
+	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.
+ * @return Error code
+ *
+ * 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;
+	/* Remove from the hardware queue */
+	if (instance->batch_list.next == &batch->link) {
+		/* I'm the first one here */
+		assert((instance->queue_head->next & LINK_POINTER_ADDRESS_MASK)
+		    == addr_to_phys(batch_qh(batch)));
+		instance->queue_head->next = batch_qh(batch)->next;
+		qpos = "FIRST";
+	} else {
+		usb_transfer_batch_t *prev =
+		    list_get_instance(
+		        batch->link.prev, usb_transfer_batch_t, link);
+		assert((batch_qh(prev)->next & LINK_POINTER_ADDRESS_MASK)
+		    == addr_to_phys(batch_qh(batch)));
+		batch_qh(prev)->next = batch_qh(batch)->next;
+		qpos = "NOT FIRST";
+	}
+	asm volatile ("": : :"memory");
+	/* 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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/transfer_list.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 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 "batch.h"
+#include "hw_struct/queue_head.h"
+
+typedef struct transfer_list
+{
+	fibril_mutex_t guard;
+	qh_t *queue_head;
+	uint32_t queue_head_pa;
+	const char *name;
+	link_t batch_list;
+} transfer_list_t;
+
+/** Dispose transfer list structures.
+ *
+ * @param[in] instance Memory place to use.
+ *
+ * Frees memory for internal qh_t structure.
+ */
+static inline void transfer_list_fini(transfer_list_t *instance)
+{
+	assert(instance);
+	free32(instance->queue_head);
+}
+
+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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/transfers.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/uhci-hcd.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,21 @@
+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
Index: uspace/drv/uhci-hcd/uhci.c
===================================================================
--- uspace/drv/uhci-hcd/uhci.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/uhci.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,246 @@
+/*
+ * 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"
+
+/** 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)
+{
+	assert(dev);
+	hc_t *hc = &((uhci_t*)dev->driver_data)->hc;
+	uint16_t status = IPC_GET_ARG1(*call);
+	assert(hc);
+	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 = &((uhci_t*)fun->dev->driver_data)->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 or parent device).
+ *
+ * @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(handle);
+	ddf_fun_t *hc_fun = ((uhci_t*)fun->dev->driver_data)->hc_fun;
+	assert(hc_fun != NULL);
+
+	*handle = hc_fun->handle;
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** This iface is generic for both RH and HC. */
+static usb_iface_t usb_iface = {
+	.get_hc_handle = usb_iface_get_hc_handle,
+	.get_address = usb_iface_get_address
+};
+/*----------------------------------------------------------------------------*/
+static ddf_dev_ops_t hc_ops = {
+//	.interfaces[USB_DEV_IFACE] = &usb_iface,
+	.interfaces[USBHC_DEV_IFACE] = &hc_iface, /* see iface.h/c */
+};
+/*----------------------------------------------------------------------------*/
+/** 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);
+	return &((rh_t*)fun->driver_data)->resource_list;
+}
+/*----------------------------------------------------------------------------*/
+static hw_res_ops_t hw_res_iface = {
+	.get_resource_list = get_resource_list,
+	.enable_interrupt = NULL
+};
+/*----------------------------------------------------------------------------*/
+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] instance UHCI structure to use.
+ * @param[in] device DDF instance of the device to use.
+ *
+ * This function does all the preparatory work for hc and rh drivers:
+ *  - gets device hw resources
+ *  - disables UHCI legacy support
+ *  - asks for interrupt
+ *  - registers interrupt handler
+ */
+int uhci_init(uhci_t *instance, ddf_dev_t *device)
+{
+	assert(instance);
+	instance->hc_fun = NULL;
+	instance->rh_fun = NULL;
+#define CHECK_RET_DEST_FUN_RETURN(ret, message...) \
+if (ret != EOK) { \
+	usb_log_error(message); \
+	if (instance->hc_fun) \
+		ddf_fun_destroy(instance->hc_fun); \
+	if (instance->rh_fun) \
+		ddf_fun_destroy(instance->rh_fun); \
+	return ret; \
+}
+
+	uintptr_t io_reg_base = 0;
+	size_t io_reg_size = 0;
+	int irq = 0;
+
+	int ret =
+	    pci_get_my_registers(device, &io_reg_base, &io_reg_size, &irq);
+	CHECK_RET_DEST_FUN_RETURN(ret,
+	    "Failed(%d) to get I/O addresses:.\n", ret, device->handle);
+	usb_log_debug("I/O regs at 0x%X (size %zu), IRQ %d.\n",
+	    io_reg_base, io_reg_size, irq);
+
+	ret = pci_disable_legacy(device);
+	CHECK_RET_DEST_FUN_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
+
+	instance->hc_fun = ddf_fun_create(device, fun_exposed, "uhci-hc");
+	ret = (instance->hc_fun == NULL) ? ENOMEM : EOK;
+	CHECK_RET_DEST_FUN_RETURN(ret,
+	    "Failed(%d) to create HC function.\n", ret);
+
+	ret = hc_init(&instance->hc, instance->hc_fun,
+	    (void*)io_reg_base, io_reg_size, interrupts);
+	CHECK_RET_DEST_FUN_RETURN(ret, "Failed(%d) to init uhci-hcd.\n", ret);
+	instance->hc_fun->ops = &hc_ops;
+	instance->hc_fun->driver_data = &instance->hc;
+	ret = ddf_fun_bind(instance->hc_fun);
+	CHECK_RET_DEST_FUN_RETURN(ret,
+	    "Failed(%d) to bind UHCI device function: %s.\n",
+	    ret, str_error(ret));
+#undef CHECK_RET_HC_RETURN
+
+#define CHECK_RET_FINI_RETURN(ret, message...) \
+if (ret != EOK) { \
+	usb_log_error(message); \
+	if (instance->hc_fun) \
+		ddf_fun_destroy(instance->hc_fun); \
+	if (instance->rh_fun) \
+		ddf_fun_destroy(instance->rh_fun); \
+	hc_fini(&instance->hc); \
+	return ret; \
+}
+
+	/* 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);
+
+	instance->rh_fun = ddf_fun_create(device, fun_inner, "uhci-rh");
+	ret = (instance->rh_fun == NULL) ? ENOMEM : EOK;
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to create root hub function.\n", 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.\n", ret);
+
+	instance->rh_fun->ops = &rh_ops;
+	instance->rh_fun->driver_data = &instance->rh;
+	ret = ddf_fun_bind(instance->rh_fun);
+	CHECK_RET_FINI_RETURN(ret,
+	    "Failed(%d) to register UHCI root hub.\n", ret);
+
+	return EOK;
+#undef CHECK_RET_FINI_RETURN
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/uhci.h
===================================================================
--- uspace/drv/uhci-hcd/uhci.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/uhci.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,56 @@
+/*
+ * 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 <ddi.h>
+#include <ddf/driver.h>
+
+#include "hc.h"
+#include "root_hub.h"
+
+typedef struct uhci {
+	ddf_fun_t *hc_fun;
+	ddf_fun_t *rh_fun;
+
+	hc_t hc;
+	rh_t rh;
+} uhci_t;
+
+int uhci_init(uhci_t *instance, ddf_dev_t *device);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/utils/malloc32.h
===================================================================
--- uspace/drv/uhci-hcd/utils/malloc32.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/utils/malloc32.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,111 @@
+/*
+ * 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 usb
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#ifndef DRV_UHCI_TRANSLATOR_H
+#define DRV_UHCI_TRANSLATOR_H
+
+#include <assert.h>
+#include <malloc.h>
+#include <mem.h>
+#include <as.h>
+
+#include "slab.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);
+	assert(ret == EOK);
+
+	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) {
+	if (size <= SLAB_ELEMENT_SIZE)
+		return slab_malloc_g();
+	assert(false);
+	return memalign(UHCI_STRCUTURES_ALIGNMENT, size);
+}
+/*----------------------------------------------------------------------------*/
+/** Physical mallocator simulator
+ *
+ * @param[in] addr Address of the place allocated by malloc32
+ */
+static inline void free32(void *addr) {
+	if (!addr)
+		return;
+	if (slab_in_range_g(addr))
+		return slab_free_g(addr);
+	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);
+	assert(free_address); /* TODO: remove this assert */
+	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-hcd/utils/slab.c
===================================================================
--- uspace/drv/uhci-hcd/utils/slab.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/utils/slab.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,141 @@
+/*
+ * 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 usb
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#include <as.h>
+#include <assert.h>
+#include <fibril_synch.h>
+#include <usb/debug.h>
+
+#include "slab.h"
+
+#define SLAB_SIZE (PAGE_SIZE * 16)
+#define SLAB_ELEMENT_COUNT (SLAB_SIZE / SLAB_ELEMENT_SIZE)
+
+typedef struct slab {
+	void *page;
+	bool slabs[SLAB_ELEMENT_COUNT];
+	fibril_mutex_t guard;
+} slab_t;
+
+static slab_t global_slab;
+
+static void * slab_malloc(slab_t *intance);
+static bool slab_in_range(slab_t *intance, void *addr);
+static void slab_free(slab_t *intance, void *addr);
+/*----------------------------------------------------------------------------*/
+void * slab_malloc_g(void)
+{
+	return slab_malloc(&global_slab);
+}
+/*----------------------------------------------------------------------------*/
+void slab_free_g(void *addr)
+{
+	return slab_free(&global_slab, addr);
+}
+/*----------------------------------------------------------------------------*/
+bool slab_in_range_g(void *addr)
+{
+	return slab_in_range(&global_slab, addr);
+}
+/*----------------------------------------------------------------------------*/
+static void slab_init(slab_t *instance)
+{
+	static FIBRIL_MUTEX_INITIALIZE(init_mutex);
+	assert(instance);
+	fibril_mutex_lock(&init_mutex);
+	if (instance->page != NULL) {
+		/* already initialized */
+		fibril_mutex_unlock(&init_mutex);
+		return;
+	}
+	fibril_mutex_initialize(&instance->guard);
+	size_t i = 0;
+	for (;i < SLAB_ELEMENT_COUNT; ++i) {
+		instance->slabs[i] = true;
+	}
+	instance->page = as_get_mappable_page(SLAB_SIZE);
+	if (instance->page != NULL) {
+		void* ret =
+		    as_area_create(instance->page, SLAB_SIZE, AS_AREA_READ | AS_AREA_WRITE);
+		if (ret != instance->page) {
+			instance->page = NULL;
+		}
+	}
+	memset(instance->page, 0xa, SLAB_SIZE);
+	fibril_mutex_unlock(&init_mutex);
+	usb_log_debug2("SLAB initialized at %p.\n", instance->page);
+}
+/*----------------------------------------------------------------------------*/
+static void * slab_malloc(slab_t *instance) {
+	assert(instance);
+	if (instance->page == NULL)
+		slab_init(instance);
+
+	fibril_mutex_lock(&instance->guard);
+	void *addr = NULL;
+	size_t i = 0;
+	for (; i < SLAB_ELEMENT_COUNT; ++i) {
+		if (instance->slabs[i]) {
+			instance->slabs[i] = false;
+			addr = (instance->page + (i * SLAB_ELEMENT_SIZE));
+			break;
+		}
+	}
+	fibril_mutex_unlock(&instance->guard);
+
+	return addr;
+}
+/*----------------------------------------------------------------------------*/
+static bool slab_in_range(slab_t *instance, void *addr) {
+	assert(instance);
+	bool in_range = (instance->page != NULL) &&
+		(addr >= instance->page) && (addr < instance->page + SLAB_SIZE);
+	return in_range;
+}
+/*----------------------------------------------------------------------------*/
+static void slab_free(slab_t *instance, void *addr)
+{
+	assert(instance);
+	assert(slab_in_range(instance, addr));
+	memset(addr, 0xa, SLAB_ELEMENT_SIZE);
+
+	const size_t pos = (addr - instance->page) /  SLAB_ELEMENT_SIZE;
+
+	fibril_mutex_lock(&instance->guard);
+	assert(instance->slabs[pos] == false);
+	instance->slabs[pos] = true;
+	fibril_mutex_unlock(&instance->guard);
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-hcd/utils/slab.h
===================================================================
--- uspace/drv/uhci-hcd/utils/slab.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-hcd/utils/slab.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,50 @@
+/*
+ * 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 usb
+ * @{
+ */
+/** @file
+ * @brief UHCI driver
+ */
+#ifndef DRV_UHCI_SLAB_H
+#define DRV_UHCI_SLAB_H
+
+#include <bool.h>
+
+#define SLAB_ELEMENT_SIZE 1024
+
+void * slab_malloc_g(void);
+
+void slab_free_g(void *addr);
+
+bool slab_in_range_g(void *addr);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/uhci-rhd/Makefile
===================================================================
--- uspace/drv/uhci-rhd/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-rhd/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,39 @@
+#
+# 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 = $(LIBDRV_PREFIX)/libdrv.a $(LIBUSB_PREFIX)/libusb.a
+EXTRA_CFLAGS += -I$(LIBDRV_PREFIX)/include -I$(LIBUSB_PREFIX)/include -I.
+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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-rhd/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,204 @@
+/*
+ * 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 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(ddf_dev_t *dev,
+    uintptr_t *io_reg_address, size_t *io_reg_size);
+#if 0
+/*----------------------------------------------------------------------------*/
+static int usb_iface_get_hc_handle(ddf_fun_t *fun, devman_handle_t *handle)
+{
+	assert(fun);
+	assert(fun->driver_data);
+	assert(handle);
+
+	*handle = ((uhci_root_hub_t*)fun->driver_data)->hc_handle;
+
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+static usb_iface_t uhci_rh_usb_iface = {
+	.get_hc_handle = usb_iface_get_hc_handle,
+	.get_address = usb_iface_get_address_hub_impl
+};
+/*----------------------------------------------------------------------------*/
+static ddf_dev_ops_t uhci_rh_ops = {
+	.interfaces[USB_DEV_IFACE] = &uhci_rh_usb_iface,
+};
+#endif
+/*----------------------------------------------------------------------------*/
+/** 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 ENOTSUP;
+
+	usb_log_debug2("%s called device %d\n", __FUNCTION__, device->handle);
+
+	//device->ops = &uhci_rh_ops;
+	uintptr_t io_regs = 0;
+	size_t io_size = 0;
+
+	int ret = hc_get_my_registers(device, &io_regs, &io_size);
+	if (ret != EOK) {
+		usb_log_error("Failed to get registers from parent HC: %s.\n",
+		    str_error(ret));
+	}
+	usb_log_debug("I/O regs at %#X (size %zu).\n", io_regs, io_size);
+
+	uhci_root_hub_t *rh = malloc(sizeof(uhci_root_hub_t));
+	if (!rh) {
+		usb_log_error("Failed to allocate driver instance.\n");
+		return ENOMEM;
+	}
+
+	ret = uhci_root_hub_init(rh, (void*)io_regs, io_size, device);
+	if (ret != EOK) {
+		usb_log_error("Failed to initialize driver instance: %s.\n",
+		    str_error(ret));
+		free(rh);
+		return ret;
+	}
+
+	device->driver_data = rh;
+	usb_log_info("Controlling root hub `%s' (%llu).\n",
+	    device->name, device->handle);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+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);
+}
+/*----------------------------------------------------------------------------*/
+/** 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(
+    ddf_dev_t *dev, uintptr_t *io_reg_address, size_t *io_reg_size)
+{
+	assert(dev != NULL);
+
+	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) {
+		goto leave;
+	}
+
+	uintptr_t io_address = 0;
+	size_t io_size = 0;
+	bool io_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 IO_RANGE:
+			io_address = (uintptr_t) res->res.io_range.address;
+			io_size = res->res.io_range.size;
+			io_found = true;
+
+		default:
+			break;
+		}
+	}
+
+	if (!io_found) {
+		rc = ENOENT;
+		goto leave;
+	}
+
+	if (io_reg_address != NULL) {
+		*io_reg_address = io_address;
+	}
+	if (io_reg_size != NULL) {
+		*io_reg_size = io_size;
+	}
+	rc = EOK;
+
+leave:
+	async_hangup(parent_phone);
+	return rc;
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-rhd/port.c
===================================================================
--- uspace/drv/uhci-rhd/port.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-rhd/port.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,348 @@
+/*
+ * 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 <errno.h>
+#include <str_error.h>
+#include <fibril_synch.h>
+
+#include <usb/usb.h>    /* usb_address_t */
+#include <usb/hub.h>
+#include <usb/debug.h>
+
+#include "port.h"
+
+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 int uhci_port_check(void *port);
+static int uhci_port_reset_enable(int portno, void *arg);
+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] value New register value.
+ * @return Error code. (Always EOK)
+ */
+static inline void uhci_port_write_status(
+    uhci_port_t *port, port_status_t value)
+{
+	assert(port);
+	pio_write_16(port->address, value);
+}
+
+/*----------------------------------------------------------------------------*/
+/** Initialize UHCI root hub port instance.
+ *
+ * @param[in] port Memory structure to use.
+ * @param[in] addr Address of I/O register.
+ * @param[in] number Port number.
+ * @param[in] usec Polling interval.
+ * @param[in] rh Pointer to ddf instance fo 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);
+	asprintf(&port->id_string, "Port (%p - %d)", port, number);
+	if (port->id_string == NULL) {
+		return ENOMEM;
+	}
+
+	port->address = address;
+	port->number = number;
+	port->wait_period_usec = usec;
+	port->attached_device = 0;
+	port->rh = rh;
+
+	int rc = usb_hc_connection_initialize_from_device(
+	    &port->hc_connection, rh);
+	if (rc != EOK) {
+		usb_log_error("Failed to initialize connection to HC.");
+		return rc;
+	}
+
+	port->checker = fibril_create(uhci_port_check, port);
+	if (port->checker == 0) {
+		usb_log_error("%s: failed to create polling fibril.",
+		    port->id_string);
+		return ENOMEM;
+	}
+
+	fibril_add_ready(port->checker);
+	usb_log_debug("%s: Started polling fibril(%x).\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 */
+		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);
+
+		int rc =
+		    usb_hc_connection_open(&instance->hc_connection);
+		if (rc != EOK) {
+			usb_log_error("%s: Failed to connect to HC.",
+			    instance->id_string);
+			continue;
+		}
+
+		/* Remove any old device */
+		if (instance->attached_device) {
+			usb_log_debug2("%s: Removing device.\n",
+			    instance->id_string);
+			uhci_port_remove_device(instance);
+		}
+
+		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);
+		}
+
+		rc = usb_hc_connection_close(&instance->hc_connection);
+		if (rc != 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 = (uhci_port_t *) arg;
+
+	usb_log_debug2("%s: new_device_enable_port.\n", port->id_string);
+
+	/*
+	 * The host then waits for at least 100 ms to allow completion of
+	 * an insertion process and for power at the device to become stable.
+	 */
+	async_usleep(100000);
+
+	/*
+	 * Resets from root ports should be nominally 50ms
+	 */
+	{
+		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);
+		usb_log_debug("%s: Reset Signal stop.\n", port->id_string);
+	}
+
+	/* the reset recovery time 10ms */
+	async_usleep(10000);
+
+	/* 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);
+
+	usb_address_t dev_addr;
+	int rc = 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);
+
+	if (rc != EOK) {
+		usb_log_error("%s: Failed(%d) to add device: %s.\n",
+		    port->id_string, rc, str_error(rc));
+		uhci_port_set_enabled(port, false);
+		return rc;
+	}
+
+	usb_log_info("New device at port %u, address %d (handle %llu).\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 %d.\n",
+	    port->id_string, (unsigned int)port->attached_device);
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/** 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);
+
+	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" : " ERROR: NO ALWAYS ONE"
+	);
+}
+/**
+ * @}
+ */
Index: uspace/drv/uhci-rhd/port.h
===================================================================
--- uspace/drv/uhci-rhd/port.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-rhd/port.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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/usbdevice.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)
+
+typedef struct uhci_port
+{
+	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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-rhd/root_hub.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,100 @@
+/*
+ * 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 <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);
+	int ret;
+
+	/* Allow access to root hub port registers */
+	assert(sizeof(port_status_t) * UHCI_ROOT_HUB_PORT_COUNT <= size);
+	port_status_t *regs;
+	ret = pio_enable(addr, size, (void**)&regs);
+	if (ret < 0) {
+		usb_log_error(
+		    "Failed(%d) to gain access to port registers at %p\n",
+		    ret, regs);
+		return ret;
+	}
+
+	/* Initialize root hub ports */
+	unsigned i = 0;
+	for (; i < UHCI_ROOT_HUB_PORT_COUNT; ++i) {
+		/* NOTE: mind pointer arithmetics here */
+		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.
+ * @return Error code.
+ */
+int 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]);
+	}
+	return EOK;
+}
+/*----------------------------------------------------------------------------*/
+/**
+ * @}
+ */
Index: uspace/drv/uhci-rhd/root_hub.h
===================================================================
--- uspace/drv/uhci-rhd/root_hub.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-rhd/root_hub.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,56 @@
+/*
+ * 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 5000000 /* 5 seconds */
+
+typedef struct root_hub {
+	uhci_port_t ports[UHCI_ROOT_HUB_PORT_COUNT];
+	devman_handle_t hc_handle;
+} uhci_root_hub_t;
+
+int uhci_root_hub_init(
+  uhci_root_hub_t *instance, void *addr, size_t size, ddf_dev_t *rh);
+
+int 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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/uhci-rhd/uhci-rhd.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,1 @@
+10 usb&uhci&root-hub
Index: uspace/drv/usbflbk/Makefile
===================================================================
--- uspace/drv/usbflbk/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbflbk/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,37 @@
+#
+# 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 = $(LIBDRV_PREFIX)/libdrv.a $(LIBUSB_PREFIX)/libusb.a
+EXTRA_CFLAGS += -I$(LIBDRV_PREFIX)/include -I$(LIBUSB_PREFIX)/include
+BINARY = usbflbk
+
+SOURCES = \
+	main.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/usbflbk/main.c
===================================================================
--- uspace/drv/usbflbk/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbflbk/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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/devdrv.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 %llu).\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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbflbk/usbflbk.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,2 @@
+10 usb&fallback
+10 usb&interface&fallback
Index: uspace/drv/usbhub/Makefile
===================================================================
--- uspace/drv/usbhub/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbhub/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,40 @@
+#
+# 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 = $(LIBDRV_PREFIX)/libdrv.a $(LIBUSB_PREFIX)/libusb.a
+EXTRA_CFLAGS += -I$(LIBDRV_PREFIX)/include -I$(LIBUSB_PREFIX)/include
+BINARY = usbhub
+
+SOURCES = \
+	main.c \
+	utils.c \
+	usbhub.c \
+	usblist.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/usbhub/main.c
===================================================================
--- uspace/drv/usbhub/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbhub/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,86 @@
+/*
+ * 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/devdrv.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
+};
+
+
+static usb_driver_ops_t usb_hub_driver_ops = {
+	.add_device = usb_hub_add_device
+};
+
+static usb_endpoint_description_t *usb_hub_endpoints[] = {
+	&hub_status_change_endpoint_description,
+	NULL
+};
+
+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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbhub/port_status.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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/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;
+
+/**
+ * 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;
+}
+
+
+/**
+ * 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 =
+		usb_new(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 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 =
+		usb_new(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 =
+		usb_new(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 =
+		usb_new(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 */
+static inline bool usb_port_get_bit(usb_port_status_t * status, int idx)
+{
+	return (((*status)>>(idx))%2);
+}
+
+/** set i`th bit of port status */
+static inline void usb_port_set_bit(
+	usb_port_status_t * status, int idx, bool value)
+{
+	(*status) = value?
+		               ((*status)|(1<<(idx))):
+		               ((*status)&(~(1<<(idx))));
+}
+
+//device connnected on port
+static inline bool usb_port_dev_connected(usb_port_status_t * status){
+	return usb_port_get_bit(status,0);
+}
+
+static inline void usb_port_set_dev_connected(usb_port_status_t * status,bool connected){
+	usb_port_set_bit(status,0,connected);
+}
+
+//port enabled
+static inline bool usb_port_enabled(usb_port_status_t * status){
+	return usb_port_get_bit(status,1);
+}
+
+static inline void usb_port_set_enabled(usb_port_status_t * status,bool enabled){
+	usb_port_set_bit(status,1,enabled);
+}
+
+//port suspended
+static inline bool usb_port_suspended(usb_port_status_t * status){
+	return usb_port_get_bit(status,2);
+}
+
+static inline void usb_port_set_suspended(usb_port_status_t * status,bool suspended){
+	usb_port_set_bit(status,2,suspended);
+}
+
+//over currect
+static inline bool usb_port_over_current(usb_port_status_t * status){
+	return usb_port_get_bit(status,3);
+}
+
+static inline void usb_port_set_over_current(usb_port_status_t * status,bool value){
+	usb_port_set_bit(status,3,value);
+}
+
+//port reset
+static inline bool usb_port_reset(usb_port_status_t * status){
+	return usb_port_get_bit(status,4);
+}
+
+static inline void usb_port_set_reset(usb_port_status_t * status,bool value){
+	usb_port_set_bit(status,4,value);
+}
+
+//powered
+static inline bool usb_port_powered(usb_port_status_t * status){
+	return usb_port_get_bit(status,8);
+}
+
+static inline void usb_port_set_powered(usb_port_status_t * status,bool powered){
+	usb_port_set_bit(status,8,powered);
+}
+
+//low speed device attached
+static inline bool usb_port_low_speed(usb_port_status_t * status){
+	return usb_port_get_bit(status,9);
+}
+
+static inline void usb_port_set_low_speed(usb_port_status_t * status,bool low_speed){
+	usb_port_set_bit(status,9,low_speed);
+}
+
+//low speed device attached
+static inline bool usb_port_high_speed(usb_port_status_t * status){
+	return usb_port_get_bit(status,10);
+}
+
+static inline void usb_port_set_high_speed(usb_port_status_t * status,bool high_speed){
+	usb_port_set_bit(status,10,high_speed);
+}
+
+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;
+}
+
+
+//connect change
+static inline bool usb_port_connect_change(usb_port_status_t * status){
+	return usb_port_get_bit(status,16);
+}
+
+static inline void usb_port_set_connect_change(usb_port_status_t * status,bool change){
+	usb_port_set_bit(status,16,change);
+}
+
+//port enable change
+static inline bool usb_port_enabled_change(usb_port_status_t * status){
+	return usb_port_get_bit(status,17);
+}
+
+static inline void usb_port_set_enabled_change(usb_port_status_t * status,bool change){
+	usb_port_set_bit(status,17,change);
+}
+
+//suspend change
+static inline bool usb_port_suspend_change(usb_port_status_t * status){
+	return usb_port_get_bit(status,18);
+}
+
+static inline void usb_port_set_suspend_change(usb_port_status_t * status,bool change){
+	usb_port_set_bit(status,18,change);
+}
+
+//over current change
+static inline bool usb_port_overcurrent_change(usb_port_status_t * status){
+	return usb_port_get_bit(status,19);
+}
+
+static inline void usb_port_set_overcurrent_change(usb_port_status_t * status,bool change){
+	usb_port_set_bit(status,19,change);
+}
+
+//reset change
+static inline bool usb_port_reset_completed(usb_port_status_t * status){
+	return usb_port_get_bit(status,20);
+}
+
+static inline void usb_port_set_reset_completed(usb_port_status_t * status,bool completed){
+	usb_port_set_bit(status,20,completed);
+}
+
+
+
+#endif	/* HUB_PORT_STATUS_H */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/usbhub.c
===================================================================
--- uspace/drv/usbhub/usbhub.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbhub/usbhub.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,696 @@
+/*
+ * 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 <usb_iface.h>
+#include <usb/ddfiface.h>
+#include <usb/descriptor.h>
+#include <usb/recognise.h>
+#include <usb/request.h>
+#include <usb/classes/hub.h>
+#include <stdio.h>
+
+#include "usbhub.h"
+#include "usbhub_private.h"
+#include "port_status.h"
+#include "usb/usb.h"
+#include "usb/pipes.h"
+#include "usb/classes/classes.h"
+
+
+static void usb_hub_init_add_device(usb_hub_info_t * hub, uint16_t port,
+		usb_speed_t speed);
+
+static int usb_hub_trigger_connecting_non_removable_devices(
+		usb_hub_info_t * hub, usb_hub_descriptor_t * descriptor);
+
+/**
+ * control loop running in hub`s fibril
+ *
+ * Hub`s fibril periodically asks for changes on hub and if needded calls
+ * change handling routine.
+ * @warning currently hub driver asks for changes once a second
+ * @param hub_info_param hub representation pointer
+ * @return zero
+ */
+int usb_hub_control_loop(void * hub_info_param){
+	usb_hub_info_t * hub_info = (usb_hub_info_t*)hub_info_param;
+	int errorCode = EOK;
+
+	while(errorCode == EOK){
+		async_usleep(1000 * 1000 * 10 );/// \TODO proper number once
+		errorCode = usb_hub_check_hub_changes(hub_info);
+	}
+	usb_log_error("something in ctrl loop went wrong, errno %d\n",errorCode);
+
+	return 0;
+}
+
+
+//*********************************************
+//
+//  hub driver code, initialization
+//
+//*********************************************
+
+/**
+ * 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 = usb_new(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;
+	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");
+	void * serialized_descriptor = malloc(USB_HUB_MAX_DESCRIPTOR_SIZE);
+	usb_hub_descriptor_t * descriptor;
+
+	/* this was one fix of some bug, should not be needed anymore
+	 * these lines allow to reset hub once more, it can be used as
+	 * brute-force initialization for non-removable devices
+	int opResult = usb_request_set_configuration(&result->endpoints.control, 1);
+	if(opResult!=EOK){
+		usb_log_error("could not set default configuration, errno %d",opResult);
+		return opResult;
+	}
+	 */
+	size_t received_size;
+	int opResult = usb_request_get_descriptor(&hub_info->usb_device->ctrl_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, badcode = %d\n",
+				opResult);
+		free(serialized_descriptor);
+		return opResult;
+	}
+	usb_log_debug2("deserializing descriptor\n");
+	descriptor = usb_deserialize_hub_desriptor(serialized_descriptor);
+	if(descriptor==NULL){
+		usb_log_warning("could not deserialize descriptor \n");
+		return opResult;
+	}
+	usb_log_debug("setting port count to %d\n",descriptor->ports_count);
+	hub_info->port_count = descriptor->ports_count;
+	hub_info->attached_devs = (usb_hc_attached_device_t*)
+	    malloc((hub_info->port_count+1) * sizeof(usb_hc_attached_device_t));
+	int i;
+	for(i=0;i<hub_info->port_count+1;++i){
+		hub_info->attached_devs[i].handle=0;
+		hub_info->attached_devs[i].address=0;
+	}
+	//handle non-removable devices
+	usb_hub_trigger_connecting_non_removable_devices(hub_info, descriptor);
+	usb_log_debug2("freeing data\n");
+	free(serialized_descriptor);
+	free(descriptor->devices_removable);
+	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;
+}
+
+/**
+ * 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, errno %d\n",
+				opResult);
+		free(hub_info);
+		return opResult;
+	}
+	
+	usb_pipe_start_session(hub_info->control_pipe);
+	//set hub configuration
+	opResult = usb_hub_set_configuration(hub_info);
+	if(opResult!=EOK){
+		usb_log_error("could not set hub configuration, errno %d\n",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 not set hub configuration, errno %d\n",opResult);
+		free(hub_info);
+		return opResult;
+	}
+	usb_pipe_end_session(hub_info->control_pipe);
+
+
+	/// \TODO what is this?
+	usb_log_debug("Creating `hub' function.\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;
+
+	int rc = ddf_fun_bind(hub_fun);
+	assert(rc == EOK);
+	rc = ddf_fun_add_to_class(hub_fun, "hub");
+	assert(rc == EOK);
+
+	//create fibril for the hub control loop
+	fid_t fid = fibril_create(usb_hub_control_loop, hub_info);
+	if (fid == 0) {
+		usb_log_error("failed to start monitoring fibril for new hub.\n");
+		return ENOMEM;
+	}
+	fibril_add_ready(fid);
+	usb_log_debug("Hub fibril created.\n");
+
+	usb_log_info("Controlling hub `%s' (%d ports).\n",
+	    hub_info->usb_device->ddf_dev->name, hub_info->port_count);
+	return EOK;
+}
+
+
+//*********************************************
+//
+//  hub driver code, main loop and port handling
+//
+//*********************************************
+
+/**
+ * triggers actions to connect non0removable devices
+ *
+ * This will trigger operations leading to activated non-removable device.
+ * Control pipe of the hub must be open fo communication.
+ * @param hub hub representation
+ * @param descriptor usb hub descriptor
+ * @return error code
+ */
+static int usb_hub_trigger_connecting_non_removable_devices(usb_hub_info_t * hub,
+		usb_hub_descriptor_t * descriptor)
+{
+	usb_log_info("attaching non-removable devices(if any)\n");
+	usb_device_request_setup_packet_t request;
+	int opResult;
+	size_t rcvd_size;
+	usb_port_status_t status;
+	uint8_t * non_removable_dev_bitmap = descriptor->devices_removable;
+	int port;
+	for(port=1;port<=descriptor->ports_count;++port){
+		bool is_non_removable =
+				((non_removable_dev_bitmap[port/8]) >> (port%8)) %2;
+		if(is_non_removable){
+			usb_log_debug("non-removable device on port %d\n",port);
+			usb_hub_set_port_status_request(&request, port);
+			opResult = usb_pipe_control_read(
+					hub->control_pipe,
+					&request, sizeof(usb_device_request_setup_packet_t),
+					&status, 4, &rcvd_size
+					);
+			if (opResult != EOK) {
+				usb_log_error("could not get port status of port %d errno:%d\n",
+						port, opResult);
+				return opResult;
+			}
+			//set the status change bit, so it will be noticed in driver loop
+			if(usb_port_dev_connected(&status)){
+				usb_hub_set_enable_port_feature_request(&request, port,
+						USB_HUB_FEATURE_C_PORT_CONNECTION);
+				opResult = usb_pipe_control_read(
+						hub->control_pipe,
+						&request, sizeof(usb_device_request_setup_packet_t),
+						&status, 4, &rcvd_size
+						);
+				if (opResult != EOK) {
+					usb_log_warning(
+							"could not set port change on port %d errno:%d\n",
+							port, opResult);
+				}
+			}
+		}
+	}
+	return EOK;
+}
+
+
+/**
+ * release default address used by given hub
+ *
+ * Also unsets hub->is_default_address_used. Convenience wrapper function.
+ * @note hub->connection MUST be open for communication
+ * @param hub hub representation
+ * @return error code
+ */
+static int usb_hub_release_default_address(usb_hub_info_t * hub){
+	int opResult = usb_hc_release_default_address(&hub->connection);
+	if(opResult!=EOK){
+		usb_log_error("could not release default address, errno %d\n",opResult);
+		return opResult;
+	}
+	hub->is_default_address_used = false;
+	return EOK;
+}
+
+/**
+ * Reset the port with new device and reserve the default address.
+ * @param hub hub representation
+ * @param port port number, starting from 1
+ * @param speed transfer speed of attached device, one of low, full or high
+ */
+static void usb_hub_init_add_device(usb_hub_info_t * hub, uint16_t port,
+		usb_speed_t speed) {
+	//if this hub already uses default address, it cannot request it once more
+	if(hub->is_default_address_used) return;
+	usb_log_debug("some connection changed\n");
+	assert(hub->control_pipe->hc_phone);
+	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");
+	}
+	usb_device_request_setup_packet_t request;
+	
+	//get default address
+	opResult = usb_hc_reserve_default_address(&hub->connection, speed);
+	
+	if (opResult != EOK) {
+		usb_log_warning("cannot assign default address, it is probably used %d\n",
+				opResult);
+		return;
+	}
+	hub->is_default_address_used = true;
+	//reset port
+	usb_hub_set_reset_port_request(&request, port);
+	opResult = usb_pipe_control_write(
+			hub->control_pipe,
+			&request,sizeof(usb_device_request_setup_packet_t),
+			NULL, 0
+			);
+	if (opResult != EOK) {
+		usb_log_error("something went wrong when reseting a port %d\n",opResult);
+		usb_hub_release_default_address(hub);
+	}
+	return;
+}
+
+/**
+ * Finalize adding new device after port reset
+ *
+ * Set device`s address and start it`s driver.
+ * @param hub hub representation
+ * @param port port number, starting from 1
+ * @param speed transfer speed of attached device, one of low, full or high
+ */
+static void usb_hub_finalize_add_device( usb_hub_info_t * hub,
+		uint16_t port, usb_speed_t speed) {
+
+	int opResult;
+	usb_log_debug("finalizing add device\n");
+	opResult = usb_hub_clear_port_feature(hub->control_pipe,
+	    port, USB_HUB_FEATURE_C_PORT_RESET);
+
+	if (opResult != EOK) {
+		usb_log_error("failed to clear port reset feature\n");
+		usb_hub_release_default_address(hub);
+		return;
+	}
+	//create connection to device
+	usb_pipe_t new_device_pipe;
+	usb_device_connection_t new_device_connection;
+	usb_device_connection_initialize_on_default_address(
+			&new_device_connection,
+			&hub->connection
+			);
+	usb_pipe_initialize_default_control(
+			&new_device_pipe,
+			&new_device_connection);
+	usb_pipe_probe_default_control(&new_device_pipe);
+
+	/* Request address from host controller. */
+	usb_address_t new_device_address = usb_hc_request_address(
+			&hub->connection,
+			speed
+			);
+	if (new_device_address < 0) {
+		usb_log_error("failed to get free USB address\n");
+		opResult = new_device_address;
+		usb_hub_release_default_address(hub);
+		return;
+	}
+	usb_log_debug("setting new address %d\n",new_device_address);
+	//opResult = usb_drv_req_set_address(hc, USB_ADDRESS_DEFAULT,
+	//    new_device_address);
+	usb_pipe_start_session(&new_device_pipe);
+	opResult = usb_request_set_address(&new_device_pipe,new_device_address);
+	usb_pipe_end_session(&new_device_pipe);
+	if (opResult != EOK) {
+		usb_log_error("could not set address for new device %d\n",opResult);
+		usb_hub_release_default_address(hub);
+		return;
+	}
+
+	//opResult = usb_hub_release_default_address(hc);
+	opResult = usb_hub_release_default_address(hub);
+	if(opResult!=EOK){
+		return;
+	}
+
+	devman_handle_t child_handle;
+	//??
+    opResult = usb_device_register_child_in_devman(new_device_address,
+            hub->connection.hc_handle, hub->usb_device->ddf_dev, &child_handle,
+            NULL, NULL, NULL);
+
+	if (opResult != EOK) {
+		usb_log_error("could not start driver for new device %d\n",opResult);
+		return;
+	}
+	hub->attached_devs[port].handle = child_handle;
+	hub->attached_devs[port].address = new_device_address;
+
+	//opResult = usb_drv_bind_address(hc, new_device_address, child_handle);
+	opResult = usb_hc_register_device(
+			&hub->connection,
+			&hub->attached_devs[port]);
+	if (opResult != EOK) {
+		usb_log_error("could not assign address of device in hcd %d\n",opResult);
+		return;
+	}
+	usb_log_info("Detected new device on `%s' (port %d), " \
+	    "address %d (handle %llu).\n",
+	    hub->usb_device->ddf_dev->name, (int) port,
+	    new_device_address, child_handle);
+}
+
+/**
+ * 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
+	if(hub->attached_devs[port].address!=0){
+		/*uncomment this code to use it when DDF allows device removal
+		opResult = usb_hc_unregister_device(
+				&hub->connection, hub->attached_devs[port].address);
+		if(opResult != EOK) {
+			dprintf(USB_LOG_LEVEL_WARNING, "could not release address of " \
+			    "removed device: %d", opResult);
+		}
+		hub->attached_devs[port].address = 0;
+		hub->attached_devs[port].handle = 0;
+		 */
+	}else{
+		usb_log_warning("this is strange, disconnected device had no address\n");
+		//device was disconnected before it`s port was reset - return default address
+		usb_hub_release_default_address(hub);
+	}
+}
+
+
+/**
+ * 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_over_current( usb_hub_info_t * hub,
+		uint16_t port){
+	int opResult;
+	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;  %d\n",
+				port, opResult);
+	}
+}
+
+/**
+ * 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
+ */
+static void usb_hub_process_interrupt(usb_hub_info_t * hub, 
+        uint16_t port) {
+	usb_log_debug("interrupt at port %d\n", port);
+	//determine type of change
+	usb_pipe_t *pipe = hub->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_port_status_request(&request, port);
+	//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 port status\n");
+		return;
+	}
+	if (rcvd_size != sizeof (usb_port_status_t)) {
+		usb_log_error("received status has incorrect size\n");
+		return;
+	}
+	//something connected/disconnected
+	if (usb_port_connect_change(&status)) {
+		if (usb_port_dev_connected(&status)) {
+			usb_log_debug("some connection changed\n");
+			usb_hub_init_add_device(hub, port, usb_port_speed(&status));
+		} else {
+			usb_hub_removed_device(hub, port);
+		}
+	}
+	//over current
+	if (usb_port_overcurrent_change(&status)) {
+		//check if it was not auto-resolved
+		if(usb_port_over_current(&status)){
+			usb_hub_over_current(hub,port);
+		}else{
+			usb_log_debug("over current condition was auto-resolved on port %d\n",
+					port);
+		}
+	}
+	//port reset
+	if (usb_port_reset_completed(&status)) {
+		usb_log_debug("port reset complete\n");
+		if (usb_port_enabled(&status)) {
+			usb_hub_finalize_add_device(hub, port, usb_port_speed(&status));
+		} else {
+			usb_log_warning("port reset, but port still not enabled\n");
+		}
+	}
+
+	usb_port_set_connect_change(&status, false);
+	usb_port_set_reset(&status, false);
+	usb_port_set_reset_completed(&status, false);
+	usb_port_set_dev_connected(&status, false);
+	if (status>>16) {
+		usb_log_info("there was some unsupported change on port %d: %X\n",
+				port,status);
+
+	}
+}
+
+/**
+ * check changes on hub
+ *
+ * Handles changes on each port with a status change.
+ * @param hub_info hub representation
+ * @return error code
+ */
+int usb_hub_check_hub_changes(usb_hub_info_t * hub_info){
+	int opResult;
+	opResult = usb_pipe_start_session(
+			hub_info->status_change_pipe);
+	if(opResult != EOK){
+		usb_log_error("could not initialize communication for hub; %d\n",
+				opResult);
+		return opResult;
+	}
+
+	size_t port_count = hub_info->port_count;
+
+	/// FIXME: count properly
+	size_t byte_length = ((port_count+1) / 8) + 1;
+		void *change_bitmap = malloc(byte_length);
+	size_t actual_size;
+
+	/*
+	 * Send the request.
+	 */
+	opResult = usb_pipe_read(
+			hub_info->status_change_pipe,
+			change_bitmap, byte_length, &actual_size
+			);
+
+	if (opResult != EOK) {
+		free(change_bitmap);
+		usb_log_warning("something went wrong while getting status of hub\n");
+		usb_pipe_end_session(hub_info->status_change_pipe);
+		return opResult;
+	}
+	unsigned int port;
+	opResult = usb_pipe_start_session(hub_info->control_pipe);
+	if(opResult!=EOK){
+		usb_log_error("could not start control pipe session %d\n", opResult);
+		usb_pipe_end_session(hub_info->status_change_pipe);
+		return opResult;
+	}
+	opResult = usb_hc_connection_open(&hub_info->connection);
+	if(opResult!=EOK){
+		usb_log_error("could not start host controller session %d\n",
+				opResult);
+		usb_pipe_end_session(hub_info->control_pipe);
+		usb_pipe_end_session(hub_info->status_change_pipe);
+		return opResult;
+	}
+
+	///todo, opresult check, pre obe konekce
+	for (port = 1; port < port_count+1; ++port) {
+		bool interrupt =
+				(((uint8_t*) change_bitmap)[port / 8] >> (port % 8)) % 2;
+		if (interrupt) {
+			usb_hub_process_interrupt(
+			        hub_info, port);
+		}
+	}
+	usb_hc_connection_close(&hub_info->connection);
+	usb_pipe_end_session(hub_info->control_pipe);
+	usb_pipe_end_session(hub_info->status_change_pipe);
+	free(change_bitmap);
+	return EOK;
+}
+
+
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/usbhub.h
===================================================================
--- uspace/drv/usbhub/usbhub.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbhub/usbhub.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,108 @@
+/*
+ * 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 <usb/usb.h>
+#include <ddf/driver.h>
+
+#define NAME "usbhub"
+
+#include <usb/hub.h>
+
+#include <usb/pipes.h>
+#include <usb/devdrv.h>
+
+
+/** Information about attached hub. */
+typedef struct {
+	/** Number of ports. */
+	int port_count;
+
+	/** attached device handles, for each port one */
+	usb_hc_attached_device_t * attached_devs;
+	
+	/** 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;
+} usb_hub_info_t;
+
+/**
+ * function running the hub-controlling loop.
+ * @param hub_info_param hub info pointer
+ */
+int usb_hub_control_loop(void * hub_info_param);
+
+/**
+ * Check changes on specified hub
+ * @param hub_info_param pointer to usb_hub_info_t structure
+ * @return error code if there is problem when initializing communication with
+ * hub, EOK otherwise
+ */
+int usb_hub_check_hub_changes(usb_hub_info_t * hub_info_param);
+
+
+int usb_hub_add_device(usb_device_t * usb_dev);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/usbhub.ma
===================================================================
--- uspace/drv/usbhub/usbhub.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbhub/usbhub.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbhub/usbhub_private.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,136 @@
+/*
+ * 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 "usblist.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/request.h>
+
+//************
+//
+// convenience define for malloc
+//
+//************
+#define usb_new(type) (type*)malloc(sizeof(type))
+
+
+/**
+ * Create hub structure instance
+ *
+ * Set the address and port count information most importantly.
+ *
+ * @param device
+ * @param hc host controller phone
+ * @return
+ */
+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);
+}
+
+/**
+ * create uint8_t array with serialized descriptor
+ *
+ * @param descriptor
+ * @return newly created serializd descriptor pointer
+ */
+void * usb_serialize_hub_descriptor(usb_hub_descriptor_t * descriptor);
+
+/**
+ * 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_deserialize_hub_desriptor(void * sdescriptor);
+
+
+#endif	/* USBHUB_PRIVATE_H */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/usblist.c
===================================================================
--- uspace/drv/usbhub/usblist.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbhub/usblist.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,80 @@
+/*
+ * 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 usblist implementation
+ */
+#include <sys/types.h>
+
+#include "usbhub_private.h"
+
+
+usb_general_list_t * usb_lst_create(void) {
+	usb_general_list_t* result = usb_new(usb_general_list_t);
+	usb_lst_init(result);
+	return result;
+}
+
+void usb_lst_init(usb_general_list_t * lst) {
+	lst->prev = lst;
+	lst->next = lst;
+	lst->data = NULL;
+}
+
+void usb_lst_prepend(usb_general_list_t* item, void* data) {
+	usb_general_list_t* appended = usb_new(usb_general_list_t);
+	appended->data = data;
+	appended->next = item;
+	appended->prev = item->prev;
+	item->prev->next = appended;
+	item->prev = appended;
+}
+
+void usb_lst_append(usb_general_list_t* item, void* data) {
+	usb_general_list_t* appended = usb_new(usb_general_list_t);
+	appended->data = data;
+	appended->next = item->next;
+	appended->prev = item;
+	item->next->prev = appended;
+	item->next = appended;
+}
+
+void usb_lst_remove(usb_general_list_t* item) {
+	item->next->prev = item->prev;
+	item->prev->next = item->next;
+}
+
+
+
+/**
+ * @}
+ */
+
+
Index: uspace/drv/usbhub/usblist.h
===================================================================
--- uspace/drv/usbhub/usblist.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbhub/usblist.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,82 @@
+/*
+ * 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 HC driver and hub driver.
+ *
+ * My private list implementation; I did not like the original helenos list.
+ * This one does not depend on the structure of stored data and has
+ * much simpler and more straight-forward semantics.
+ */
+#ifndef USBLIST_H
+#define	USBLIST_H
+
+/**
+ * general list structure
+ */
+typedef struct usb_general_list{
+	void * data;
+	struct usb_general_list * prev, * next;
+} usb_general_list_t;
+
+/** create head of usb general list */
+usb_general_list_t * usb_lst_create(void);
+
+/** initialize head of usb general list */
+void usb_lst_init(usb_general_list_t * lst);
+
+
+/** is the list empty? */
+static inline bool usb_lst_empty(usb_general_list_t * lst){
+	return lst?(lst->next==lst):true;
+}
+
+/** append data behind item */
+void usb_lst_append(usb_general_list_t * lst, void * data);
+
+/** prepend data beore item */
+void usb_lst_prepend(usb_general_list_t * lst, void * data);
+
+/** remove list item from list */
+void usb_lst_remove(usb_general_list_t * item);
+
+/** get data o specified type from list item */
+#define usb_lst_get_data(item, type)  (type *) (item->data)
+
+/** get usb_hub_info_t data from list item */
+static inline usb_hub_info_t * usb_hub_lst_get_data(usb_general_list_t * item) {
+	return usb_lst_get_data(item,usb_hub_info_t);
+}
+
+#endif	/* USBLIST_H */
+/**
+ * @}
+ */
Index: uspace/drv/usbhub/utils.c
===================================================================
--- uspace/drv/usbhub/utils.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbhub/utils.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,117 @@
+/*
+ * 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
+
+void * usb_serialize_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 / 8 + ((descriptor->ports_count % 8 > 0) ? 1 : 0);
+	size += 2 * var_size;
+	uint8_t * result = (uint8_t*) malloc(size);
+	//size
+	result[0] = size;
+	//descriptor type
+	result[1] = USB_DESCTYPE_HUB;
+	result[2] = descriptor->ports_count;
+	/// @fixme handling of endianness??
+	result[3] = descriptor->hub_characteristics / 256;
+	result[4] = descriptor->hub_characteristics % 256;
+	result[5] = descriptor->pwr_on_2_good_time;
+	result[6] = descriptor->current_requirement;
+
+	size_t i;
+	for (i = 0; i < var_size; ++i) {
+		result[7 + i] = descriptor->devices_removable[i];
+	}
+	for (i = 0; i < var_size; ++i) {
+		result[7 + var_size + i] = 255;
+	}
+	return result;
+}
+
+usb_hub_descriptor_t * usb_deserialize_hub_desriptor(void * serialized_descriptor) {
+	uint8_t * sdescriptor = (uint8_t*) 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 = usb_new(usb_hub_descriptor_t);
+	
+
+	result->ports_count = sdescriptor[2];
+	/// @fixme handling of endianness??
+	result->hub_characteristics = sdescriptor[4] + 256 * sdescriptor[3];
+	result->pwr_on_2_good_time = sdescriptor[5];
+	result->current_requirement = sdescriptor[6];
+	size_t var_size = result->ports_count / 8 + ((result->ports_count % 8 > 0)
+			? 1 : 0);
+	result->devices_removable = (uint8_t*) malloc(var_size);
+
+	size_t i;
+	for (i = 0; i < var_size; ++i) {
+		result->devices_removable[i] = sdescriptor[7 + i];
+	}
+	return result;
+}
+
+
+
+/**
+ * @}
+ */
Index: uspace/drv/usbkbd/Makefile
===================================================================
--- uspace/drv/usbkbd/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,53 @@
+#
+# 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 = $(LIBDRV_PREFIX)/libdrv.a $(LIBUSB_PREFIX)/libusb.a
+EXTRA_CFLAGS += -I$(LIBDRV_PREFIX)/include -I$(LIBUSB_PREFIX)/include -I.
+BINARY = usbkbd
+
+STOLEN_LAYOUT_SOURCES = \
+	layout/us_qwerty.c \
+	layout/us_dvorak.c \
+	layout/cz.c
+
+SOURCES = \
+	main.c \
+	conv.c \
+	kbddev.c \
+	kbdrepeat.c \
+	$(STOLEN_LAYOUT_SOURCES)
+
+EXTRA_CLEAN = $(STOLEN_LAYOUT_SOURCES)
+
+SRV_KBD = $(USPACE_PREFIX)/srv/hid/kbd
+
+include $(USPACE_PREFIX)/Makefile.common
+
+layout/%.c: $(SRV_KBD)/layout/%.c
+	ln -sfn ../$< $@
Index: uspace/drv/usbkbd/conv.c
===================================================================
--- uspace/drv/usbkbd/conv.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/conv.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,193 @@
+/*
+ * 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 some as 0x31 - 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/usbkbd/conv.h
===================================================================
--- uspace/drv/usbkbd/conv.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/conv.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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_KBD_CONV_H_
+#define USB_KBD_CONV_H_
+
+unsigned int usbhid_parse_scancode(int scancode);
+
+#endif /* USB_KBD_CONV_H_ */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbkbd/kbd.h
===================================================================
--- uspace/drv/usbkbd/kbd.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/kbd.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,5 @@
+/*
+ * Dummy file because of shared layout sources.
+ *
+ * Do not delete.
+ */
Index: uspace/drv/usbkbd/kbddev.c
===================================================================
--- uspace/drv/usbkbd/kbddev.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/kbddev.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,936 @@
+/*
+ * 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/dp.h>
+#include <usb/request.h>
+#include <usb/classes/hid.h>
+#include <usb/pipes.h>
+#include <usb/debug.h>
+#include <usb/classes/hidparser.h>
+#include <usb/classes/classes.h>
+#include <usb/classes/hidut.h>
+#include <usb/classes/hidreq.h>
+#include <usb/classes/hidreport.h>
+#include <usb/classes/hid/utled.h>
+
+#include <usb/devdrv.h>
+
+#include "kbddev.h"
+
+#include "layout.h"
+#include "conv.h"
+#include "kbdrepeat.h"
+
+/*----------------------------------------------------------------------------*/
+/** Default modifiers when the keyboard is initialized. */
+static const unsigned DEFAULT_ACTIVE_MODS = KM_NUM_LOCK;
+
+///** Boot protocol report size (key part). */
+//static const size_t BOOTP_REPORT_SIZE = 6;
+
+///** Boot protocol total report size. */
+//static const size_t BOOTP_BUFFER_SIZE = 8;
+
+///** Boot protocol output report size. */
+//static const size_t BOOTP_BUFFER_OUT_SIZE = 1;
+
+///** Boot protocol error key code. */
+//static const uint8_t BOOTP_ERROR_ROLLOVER = 1;
+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. */
+static usb_endpoint_description_t boot_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
+};
+
+/* Array of endpoints expected on the device, NULL terminated. */
+usb_endpoint_description_t 
+    *usb_kbd_endpoints[USB_KBD_POLL_EP_COUNT + 1] = {
+	&boot_poll_endpoint_description,
+	NULL
+};
+
+/*----------------------------------------------------------------------------*/
+
+enum {
+	BOOT_REPORT_DESCRIPTOR_SIZE = 63
+};
+
+static const uint8_t BOOT_REPORT_DESCRIPTOR[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;
+
+/*----------------------------------------------------------------------------*/
+/* Modifier constants                                                         */
+/*----------------------------------------------------------------------------*/
+/** Mapping of USB modifier key codes to generic modifier key codes. */
+static const keycode_t usbhid_modifiers_keycodes[USB_HID_MOD_COUNT] = {
+	KC_LCTRL,         /* USB_HID_MOD_LCTRL */
+	KC_LSHIFT,        /* USB_HID_MOD_LSHIFT */
+	KC_LALT,          /* USB_HID_MOD_LALT */
+	0,                /* USB_HID_MOD_LGUI */
+	KC_RCTRL,         /* USB_HID_MOD_RCTRL */
+	KC_RSHIFT,        /* USB_HID_MOD_RSHIFT */
+	KC_RALT,          /* USB_HID_MOD_RALT */
+	0,                /* USB_HID_MOD_RGUI */
+};
+
+typedef enum usbhid_lock_code {
+	USB_KBD_LOCK_NUM = 0x53,
+	USB_KBD_LOCK_CAPS = 0x39,
+	USB_KBD_LOCK_SCROLL = 0x47,
+	USB_KBD_LOCK_COUNT = 3
+} usbhid_lock_code;
+
+static const usbhid_lock_code usbhid_lock_codes[USB_KBD_LOCK_COUNT] = {
+	USB_KBD_LOCK_NUM,
+	USB_KBD_LOCK_CAPS,
+	USB_KBD_LOCK_SCROLL
+};
+
+/*----------------------------------------------------------------------------*/
+/* IPC method handler                                                         */
+/*----------------------------------------------------------------------------*/
+
+static void default_connection_handler(ddf_fun_t *, ipc_callid_t, ipc_call_t *);
+ddf_dev_ops_t keyboard_ops = {
+	.default_handler = default_connection_handler
+};
+
+/** 
+ * 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.
+ */
+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;
+	assert(kbd_dev != NULL);
+
+	if (method == IPC_M_CONNECT_TO_ME) {
+		int callback = IPC_GET_ARG5(*icall);
+
+		if (kbd_dev->console_phone != -1) {
+			async_answer_0(icallid, ELIMIT);
+			return;
+		}
+
+		kbd_dev->console_phone = callback;
+		async_answer_0(icallid, EOK);
+		return;
+	}
+	
+	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_kbd_t *kbd_dev) 
+{
+	unsigned i = 0;
+	
+	/* Reset the LED data. */
+	memset(kbd_dev->led_data, 0, kbd_dev->led_output_size * sizeof(int32_t));
+	
+	if ((kbd_dev->mods & KM_NUM_LOCK) && (i < kbd_dev->led_output_size)) {
+		kbd_dev->led_data[i++] = USB_HID_LED_NUM_LOCK;
+	}
+	
+	if ((kbd_dev->mods & KM_CAPS_LOCK) && (i < kbd_dev->led_output_size)) {
+		kbd_dev->led_data[i++] = USB_HID_LED_CAPS_LOCK;
+	}
+	
+	if ((kbd_dev->mods & KM_SCROLL_LOCK) 
+	    && (i < kbd_dev->led_output_size)) {
+		kbd_dev->led_data[i++] = USB_HID_LED_SCROLL_LOCK;
+	}
+
+	// TODO: COMPOSE and KANA
+	
+	usb_log_debug("Creating output report.\n");
+	
+	int rc = usb_hid_report_output_translate(kbd_dev->parser, 
+	    kbd_dev->led_path, USB_HID_PATH_COMPARE_END, kbd_dev->output_buffer, 
+	    kbd_dev->output_size, kbd_dev->led_data, kbd_dev->led_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(&kbd_dev->usb_dev->ctrl_pipe, 
+	    kbd_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_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) {
+				usb_kbd_set_led(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_kbd_t *kbd_dev, 
+    const uint8_t *key_codes, size_t count)
+{
+	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 < count && key_codes[i] != ERROR_ROLLOVER) {
+		++i;
+	}
+	if (i != count) {
+		usb_log_debug("Phantom state occured.\n");
+		// phantom state, do nothing
+		return;
+	}
+	
+	/* TODO: quite dummy right now, think of better implementation */
+	assert(count == kbd_dev->key_count);
+	
+	/*
+	 * 1) Key releases
+	 */
+	for (j = 0; j < count; ++j) {
+		// try to find the old key in the new key list
+		i = 0;
+		while (i < kbd_dev->key_count
+		    && key_codes[i] != kbd_dev->keys[j]) {
+			++i;
+		}
+		
+		if (i == count) {
+			// not found, i.e. the key was released
+			key = usbhid_parse_scancode(kbd_dev->keys[j]);
+			if (!usb_kbd_is_lock(key)) {
+				usb_kbd_repeat_stop(kbd_dev, key);
+			}
+			usb_kbd_push_ev(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 < count && kbd_dev->keys[j] != key_codes[i]) { 
+			++j;
+		}
+		
+		if (j == count) {
+			// not found, i.e. new key pressed
+			key = usbhid_parse_scancode(key_codes[i]);
+			usb_log_debug2("Key pressed: %d (keycode: %d)\n", key,
+			    key_codes[i]);
+			usb_kbd_push_ev(kbd_dev, KEY_PRESS, key);
+			if (!usb_kbd_is_lock(key)) {
+				usb_kbd_repeat_start(kbd_dev, key);
+			}
+		} else {
+			// found, nothing happens
+		}
+	}
+	
+	memcpy(kbd_dev->keys, key_codes, count);
+
+	usb_log_debug("New stored keycodes: %s\n", 
+	    usb_debug_str_buffer(kbd_dev->keys, kbd_dev->key_count, 0));
+}
+
+/*----------------------------------------------------------------------------*/
+/* Callbacks for parser                                                       */
+/*----------------------------------------------------------------------------*/
+/**
+ * Callback function for the HID report parser.
+ *
+ * This function is called by the HID report parser with the parsed report.
+ * The parsed report is used to check if any events occured (key was pressed or
+ * released, modifier was pressed or released).
+ *
+ * @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).
+ * @param modifiers Bitmap of modifiers (Ctrl, Alt, Shift, GUI).
+ * @param arg User-specified argument. Expects pointer to the keyboard device
+ *            structure representing the keyboard.
+ *
+ * @sa usb_kbd_check_key_changes(), usb_kbd_check_modifier_changes()
+ */
+static void usb_kbd_process_keycodes(const uint8_t *key_codes, size_t count,
+    uint8_t modifiers, void *arg)
+{
+	if (arg == NULL) {
+		usb_log_warning("Missing argument in callback "
+		    "usbhid_process_keycodes().\n");
+		return;
+	}
+	
+	usb_kbd_t *kbd_dev = (usb_kbd_t *)arg;
+	assert(kbd_dev != NULL);
+
+	usb_log_debug("Got keys from parser: %s\n", 
+	    usb_debug_str_buffer(key_codes, count, 0));
+	
+	if (count != kbd_dev->key_count) {
+		usb_log_warning("Number of received keycodes (%d) differs from"
+		    " expected number (%d).\n", count, kbd_dev->key_count);
+		return;
+	}
+	
+	///usb_kbd_check_modifier_changes(kbd_dev, key_codes, count);
+	usb_kbd_check_key_changes(kbd_dev, key_codes, count);
+}
+
+/*----------------------------------------------------------------------------*/
+/* 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_kbd_t *kbd_dev,
+                                 uint8_t *buffer, size_t actual_size)
+{
+	assert(kbd_dev->initialized == USB_KBD_STATUS_INITIALIZED);
+	assert(kbd_dev->parser != NULL);
+	
+	usb_hid_report_in_callbacks_t *callbacks =
+	    (usb_hid_report_in_callbacks_t *)malloc(
+	        sizeof(usb_hid_report_in_callbacks_t));
+	
+	callbacks->keyboard = usb_kbd_process_keycodes;
+
+	usb_log_debug("Calling usb_hid_parse_report() with "
+	    "buffer %s\n", usb_debug_str_buffer(buffer, actual_size, 0));
+	
+//	int rc = usb_hid_boot_keyboard_input_report(buffer, actual_size,
+//	    callbacks, kbd_dev);
+	usb_hid_report_path_t *path = usb_hid_report_path();
+	usb_hid_report_path_append_item(path, USB_HIDUT_PAGE_KEYBOARD, 0);
+	
+	int rc = usb_hid_parse_report(kbd_dev->parser, buffer,
+	    actual_size, path, USB_HID_PATH_COMPARE_STRICT, callbacks, kbd_dev);
+
+	usb_hid_report_path_free (path);
+	
+	if (rc != EOK) {
+		usb_log_warning("Error in usb_hid_boot_keyboard_input_report():"
+		    "%s\n", str_error(rc));
+	}
+}
+
+/*----------------------------------------------------------------------------*/
+/* HID/KBD structure manipulation                                             */
+/*----------------------------------------------------------------------------*/
+
+static void usb_kbd_mark_unusable(usb_kbd_t *kbd_dev)
+{
+	kbd_dev->initialized = USB_KBD_STATUS_TO_DESTROY;
+}
+
+
+/*----------------------------------------------------------------------------*/
+/* API functions                                                              */
+/*----------------------------------------------------------------------------*/
+/**
+ * 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).
+ */
+usb_kbd_t *usb_kbd_new(void)
+{
+	usb_kbd_t *kbd_dev = 
+	    (usb_kbd_t *)malloc(sizeof(usb_kbd_t));
+
+	if (kbd_dev == NULL) {
+		usb_log_fatal("No memory!\n");
+		return NULL;
+	}
+	
+	memset(kbd_dev, 0, sizeof(usb_kbd_t));
+	
+	kbd_dev->parser = (usb_hid_report_parser_t *)(malloc(sizeof(
+	    usb_hid_report_parser_t)));
+	if (kbd_dev->parser == NULL) {
+		usb_log_fatal("No memory!\n");
+		free(kbd_dev);
+		return NULL;
+	}
+	
+	kbd_dev->console_phone = -1;
+	kbd_dev->initialized = USB_KBD_STATUS_UNINITIALIZED;
+	
+	return kbd_dev;
+}
+
+/*----------------------------------------------------------------------------*/
+/**
+ * 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_kbd_t *kbd_dev, usb_device_t *dev)
+{
+	int rc;
+	
+	usb_log_debug("Initializing HID/KBD structure...\n");
+	
+	if (kbd_dev == NULL) {
+		usb_log_error("Failed to init keyboard structure: no structure"
+		    " given.\n");
+		return EINVAL;
+	}
+	
+	if (dev == NULL) {
+		usb_log_error("Failed to init keyboard structure: no USB device"
+		    " given.\n");
+		return EINVAL;
+	}
+	
+	if (kbd_dev->initialized == USB_KBD_STATUS_INITIALIZED) {
+		usb_log_warning("Keyboard structure already initialized.\n");
+		return EINVAL;
+	}
+	
+	/* TODO: does not work! */
+	if (!dev->pipes[USB_KBD_POLL_EP_NO].present) {
+		usb_log_warning("Required endpoint not found - probably not "
+		    "a supported device.\n");
+		return ENOTSUP;
+	}
+	
+	/* The USB device should already be initialized, save it in structure */
+	kbd_dev->usb_dev = dev;
+	
+	/* Initialize the report parser. */
+	rc = usb_hid_parser_init(kbd_dev->parser);
+	if (rc != EOK) {
+		usb_log_error("Failed to initialize report parser.\n");
+		return rc;
+	}
+	
+	/* Get the report descriptor and parse it. */
+	rc = usb_hid_process_report_descriptor(kbd_dev->usb_dev, 
+	    kbd_dev->parser);
+	if (rc != EOK) {
+		usb_log_warning("Could not process report descriptor, "
+		    "falling back to boot protocol.\n");
+		rc = usb_hid_parse_report_descriptor(kbd_dev->parser, 
+		    BOOT_REPORT_DESCRIPTOR, 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(&kbd_dev->usb_dev->ctrl_pipe, 
+		    kbd_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;
+		}
+	}
+	
+	/*
+	 * 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);
+	kbd_dev->key_count = usb_hid_report_input_length(
+	    kbd_dev->parser, path, USB_HID_PATH_COMPARE_STRICT);
+	usb_hid_report_path_free (path);
+	
+	usb_log_debug("Size of the input report: %zu\n", kbd_dev->key_count);
+	
+	kbd_dev->keys = (uint8_t *)calloc(kbd_dev->key_count, sizeof(uint8_t));
+	
+	if (kbd_dev->keys == NULL) {
+		usb_log_fatal("No memory!\n");
+		return ENOMEM;
+	}
+	
+	/*
+	 * Output report
+	 */
+	kbd_dev->output_size = 0;
+	kbd_dev->output_buffer = usb_hid_report_output(kbd_dev->parser, 
+	    &kbd_dev->output_size);
+	if (kbd_dev->output_buffer == NULL) {
+		usb_log_warning("Error creating output report buffer.\n");
+		free(kbd_dev->keys);
+		return ENOMEM;  /* TODO: other error code */
+	}
+	
+	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_output_size(kbd_dev->parser, 
+	    kbd_dev->led_path, USB_HID_PATH_COMPARE_END);
+	
+	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);
+		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);
+		return ENOMEM;
+	}
+	
+	fibril_mutex_initialize(kbd_dev->repeat_mtx);
+	
+	/*
+	 * Set LEDs according to initial setup.
+	 * Set Idle rate
+	 */
+	usb_kbd_set_led(kbd_dev);
+	
+	usbhid_req_set_idle(&kbd_dev->usb_dev->ctrl_pipe, 
+	    kbd_dev->usb_dev->interface_no, IDLE_RATE);
+	
+	kbd_dev->initialized = USB_KBD_STATUS_INITIALIZED;
+	usb_log_debug("HID/KBD device structure initialized.\n");
+	
+	return EOK;
+}
+
+/*----------------------------------------------------------------------------*/
+
+bool usb_kbd_polling_callback(usb_device_t *dev, uint8_t *buffer,
+     size_t buffer_size, void *arg)
+{
+	if (dev == NULL || buffer == NULL || arg == NULL) {
+		// do not continue polling (???)
+		return false;
+	}
+	
+	usb_kbd_t *kbd_dev = (usb_kbd_t *)arg;
+	
+	// TODO: add return value from this function
+	usb_kbd_process_data(kbd_dev, buffer, buffer_size);
+	
+	return true;
+}
+
+/*----------------------------------------------------------------------------*/
+
+void usb_kbd_polling_ended_callback(usb_device_t *dev, bool reason, 
+     void *arg)
+{
+	if (dev == NULL || arg == NULL) {
+		return;
+	}
+	
+	usb_kbd_t *kbd = (usb_kbd_t *)arg;
+	
+	usb_kbd_mark_unusable(kbd);
+}
+
+/*----------------------------------------------------------------------------*/
+
+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)->hid_dev != NULL) {
+//		usbhid_dev_free(&(*kbd_dev)->hid_dev);
+//		assert((*kbd_dev)->hid_dev == NULL);
+//	}
+	
+	if ((*kbd_dev)->repeat_mtx != NULL) {
+		/* TODO: replace by some check and wait */
+		assert(!fibril_mutex_is_locked((*kbd_dev)->repeat_mtx));
+		free((*kbd_dev)->repeat_mtx);
+	}
+	
+	// destroy the parser
+	if ((*kbd_dev)->parser != NULL) {
+		usb_hid_free_report_parser((*kbd_dev)->parser);
+	}
+	
+	// free the output buffer
+	usb_hid_report_output_free((*kbd_dev)->output_buffer);
+	
+	/* TODO: what about the USB device structure?? */
+
+	free(*kbd_dev);
+	*kbd_dev = NULL;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbkbd/kbddev.h
===================================================================
--- uspace/drv/usbkbd/kbddev.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/kbddev.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,154 @@
+/*
+ * 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_KBDDEV_H_
+#define USB_KBDDEV_H_
+
+#include <stdint.h>
+
+#include <fibril_synch.h>
+
+#include <usb/classes/hid.h>
+#include <usb/classes/hidparser.h>
+#include <ddf/driver.h>
+#include <usb/pipes.h>
+#include <usb/devdrv.h>
+
+#include "kbdrepeat.h"
+
+/*----------------------------------------------------------------------------*/
+/**
+ * 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 {
+	/** Structure holding generic USB device information. */
+	//usbhid_dev_t *hid_dev;
+	usb_device_t *usb_dev;
+	
+	/** Currently pressed keys (not translated to key codes). */
+	uint8_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;
+	
+	/** Information for auto-repeat of keys. */
+	usb_kbd_repeat_t repeat;
+	
+	/** Mutex for accessing the information about auto-repeat. */
+	fibril_mutex_t *repeat_mtx;
+	
+	/** Report descriptor. */
+	uint8_t *report_desc;
+
+	/** Report descriptor size. */
+	size_t report_desc_size;
+	
+	uint8_t *output_buffer;
+	
+	size_t output_size;
+	
+	size_t led_output_size;
+	
+	usb_hid_report_path_t *led_path;
+	
+	int32_t *led_data;
+
+	/** HID Report parser. */
+	usb_hid_report_parser_t *parser;
+	
+	/** State of the structure (for checking before use). 
+	 * 
+	 * 0 - not initialized
+	 * 1 - initialized
+	 * -1 - ready for destroying
+	 */
+	int initialized;
+} usb_kbd_t;
+
+/*----------------------------------------------------------------------------*/
+
+enum {
+	USB_KBD_POLL_EP_NO = 0,
+	USB_KBD_POLL_EP_COUNT = 1
+};
+
+usb_endpoint_description_t *usb_kbd_endpoints[USB_KBD_POLL_EP_COUNT + 1];
+
+ddf_dev_ops_t keyboard_ops;
+
+/*----------------------------------------------------------------------------*/
+
+usb_kbd_t *usb_kbd_new(void);
+
+int usb_kbd_init(usb_kbd_t *kbd_dev, usb_device_t *dev);
+
+bool usb_kbd_polling_callback(usb_device_t *dev, uint8_t *buffer,
+     size_t buffer_size, void *arg);
+
+void usb_kbd_polling_ended_callback(usb_device_t *dev, bool reason, 
+     void *arg);
+
+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(usb_kbd_t *kbd_dev, int type, unsigned int key);
+
+#endif /* USB_KBDDEV_H_ */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbkbd/kbdrepeat.c
===================================================================
--- uspace/drv/usbkbd/kbdrepeat.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/kbdrepeat.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,185 @@
+/*
+ * 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);
+				usb_kbd_push_ev(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/usbkbd/kbdrepeat.h
===================================================================
--- uspace/drv/usbkbd/kbdrepeat.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/kbdrepeat.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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_KBDREPEAT_H_
+#define USB_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_KBDREPEAT_H_ */
+
+/**
+ * @}
+ */
Index: uspace/drv/usbkbd/layout.h
===================================================================
--- uspace/drv/usbkbd/layout.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/layout.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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_KBD_LAYOUT_H_
+#define USB_KBD_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/usbkbd/main.c
===================================================================
--- uspace/drv/usbkbd/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,264 @@
+/*
+ * 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/devdrv.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 usbhid_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));
+		// TODO: Can / should I destroy the DDF function?
+		ddf_fun_destroy(kbd_fun);
+		usb_kbd_free(&kbd_dev);
+		return rc;
+	}
+	
+	/*
+	 * Create new fibril for handling this keyboard
+	 */
+	//fid_t fid = fibril_create(usb_kbd_fibril, kbd_dev);
+	
+	/* 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;
+	}
+	//fibril_add_ready(fid);
+	
+	/*
+	 * 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 usbhid_add_device(usb_device_t *dev)
+{
+	usb_log_debug("usbhid_add_device()\n");
+	
+	if (dev->interface_no < 0) {
+		usb_log_warning("Device is not a supported keyboard.\n");
+		usb_log_error("Failed to add HID device: endpoint not found."
+		    "\n");
+		return ENOTSUP;
+	}
+	
+	int rc = usbhid_try_add_device(dev);
+	
+	if (rc != EOK) {
+		usb_log_warning("Device is not a supported keyboard.\n");
+		usb_log_error("Failed to add HID 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 usbhid_driver_ops = {
+        .add_device = usbhid_add_device,
+};
+
+
+/* The driver itself. */
+static usb_driver_t usbhid_driver = {
+        .name = NAME,
+        .ops = &usbhid_driver_ops,
+        .endpoints = usb_kbd_endpoints
+};
+
+/*----------------------------------------------------------------------------*/
+
+//static driver_ops_t kbd_driver_ops = {
+//	.add_device = usbhid_add_device,
+//};
+
+///*----------------------------------------------------------------------------*/
+
+//static driver_t kbd_driver = {
+//	.name = NAME,
+//	.driver_ops = &kbd_driver_ops
+//};
+
+/*----------------------------------------------------------------------------*/
+
+int main(int argc, char *argv[])
+{
+	printf(NAME ": HelenOS USB HID driver.\n");
+
+	usb_log_enable(USB_LOG_LEVEL_DEBUG, NAME);
+
+	return usb_driver_main(&usbhid_driver);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbkbd/usbkbd.ma
===================================================================
--- uspace/drv/usbkbd/usbkbd.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbkbd/usbkbd.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,2 @@
+100 usb&interface&class=HID&subclass=0x01&protocol=0x01
+10 usb&interface&class=HID
Index: uspace/drv/usbmid/Makefile
===================================================================
--- uspace/drv/usbmid/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmid/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,40 @@
+#
+# 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 = $(LIBDRV_PREFIX)/libdrv.a $(LIBUSB_PREFIX)/libusb.a
+EXTRA_CFLAGS += -I$(LIBDRV_PREFIX)/include -I$(LIBUSB_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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmid/dump.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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/pipes.h>
+#include <usb/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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmid/explore.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,204 @@
+/*
+ * 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/request.h>
+#include <usb/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
+};
+
+/** Find starting indexes of all interface descriptors in a configuration.
+ *
+ * @param config_descriptor Full configuration descriptor.
+ * @param config_descriptor_size Size of @p config_descriptor in bytes.
+ * @param interface_positions Array where to store indexes of interfaces.
+ * @param interface_count Size of @p interface_positions array.
+ * @return Number of found interfaces.
+ * @retval (size_t)-1 Error occured.
+ */
+static size_t find_interface_descriptors(uint8_t *config_descriptor,
+    size_t config_descriptor_size,
+    size_t *interface_positions, size_t interface_count)
+{
+	if (interface_count == 0) {
+		return (size_t) -1;
+	}
+
+	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 = usb_dp_get_nested_descriptor(&parser, &data,
+	    data.data);
+	if (interface == NULL) {
+		return (size_t) -1;
+	}
+	if (interface[1] != USB_DESCTYPE_INTERFACE) {
+		return (size_t) -1;
+	}
+
+	size_t found_interfaces = 0;
+	interface_positions[found_interfaces] = interface - config_descriptor;
+	found_interfaces++;
+
+	while (interface != NULL) {
+		interface = usb_dp_get_sibling_descriptor(&parser, &data,
+		    data.data, interface);
+		if ((interface != NULL)
+		    && (found_interfaces < interface_count)
+		    && (interface[1] == USB_DESCTYPE_INTERFACE)) {
+			interface_positions[found_interfaces]
+			    = interface - config_descriptor;
+			found_interfaces++;
+		}
+	}
+
+	return found_interfaces;
+}
+
+/** 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;
+
+	size_t *interface_descriptors
+	    = malloc(sizeof(size_t) * config_descriptor->interface_count);
+	if (interface_descriptors == NULL) {
+		usb_log_error("Out of memory (wanted %zuB).\n",
+		    sizeof(size_t) * config_descriptor->interface_count);
+		free(config_descriptor_raw);
+		return false;
+	}
+	size_t interface_descriptors_count
+	    = find_interface_descriptors(
+	    config_descriptor_raw, config_descriptor_size,
+	    interface_descriptors, config_descriptor->interface_count);
+
+	if (interface_descriptors_count == (size_t) -1) {
+		usb_log_error("Problem parsing configuration descriptor.\n");
+		free(interface_descriptors);
+		return false;
+	}
+
+	/* 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));
+		free(interface_descriptors);
+		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");
+		free(interface_descriptors);
+		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));
+		free(interface_descriptors);
+		return false;
+	}
+
+	/* Spawn interface children */
+	size_t i;
+	for (i = 0; i < interface_descriptors_count; i++) {
+		usb_standard_interface_descriptor_t *interface
+		    = (usb_standard_interface_descriptor_t *)
+		    (config_descriptor_raw + interface_descriptors[i]);
+		usb_log_debug2("Interface descriptor at index %zu (type %d).\n",
+		    interface_descriptors[i], (int) interface->descriptor_type);
+		usb_log_info("Creating child for interface %d (%s).\n",
+		    (int) interface->interface_number,
+		    usb_str_class(interface->interface_class));
+		rc = usbmid_spawn_interface_child(dev, &dev->descriptors.device,
+		    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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmid/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 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/request.h>
+#include <usb/descriptor.h>
+#include <usb/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);
+
+	int rc;
+
+	rc = usb_pipe_start_session(&dev->ctrl_pipe);
+	if (rc != EOK) {
+		usb_log_error("Failed to start session on control pipe: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+
+	bool accept = usbmid_explore_device(dev);
+
+	rc = usb_pipe_end_session(&dev->ctrl_pipe);
+	if (rc != EOK) {
+		usb_log_warning("Failed to end session on control pipe: %s.\n",
+		    str_error(rc));
+	}
+
+	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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmid/usbmid.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,183 @@
+/*
+ * 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/pipes.h>
+#include <usb/classes/classes.h>
+#include <usb/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
+};
+
+/** Create new interface for USB MID device.
+ *
+ * @param fun Backing generic DDF device function (representing interface).
+ * @param iface_no Interface number.
+ * @return New interface.
+ * @retval NULL Error occured.
+ */
+usbmid_interface_t *usbmid_interface_create(ddf_fun_t *fun, int iface_no)
+{
+	usbmid_interface_t *iface = malloc(sizeof(usbmid_interface_t));
+	if (iface == NULL) {
+		usb_log_error("Out of memory (wanted %zuB).\n",
+		    sizeof(usbmid_interface_t));
+		return NULL;
+	}
+
+	iface->fun = fun;
+	iface->interface_no = iface_no;
+
+	return iface;
+}
+
+
+/** Spawn new child device from one interface.
+ *
+ * @param parent Parent MID device.
+ * @param device_descriptor Device descriptor.
+ * @param interface_descriptor Interface descriptor.
+ * @return Error code.
+ */
+int usbmid_spawn_interface_child(usb_device_t *parent,
+    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;
+	usbmid_interface_t *child_as_interface = 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;
+	}
+
+
+
+	child_as_interface = usbmid_interface_create(child,
+	    (int) interface_descriptor->interface_number);
+	if (child_as_interface == NULL) {
+		rc = ENOMEM;
+		goto error_leave;
+	}
+
+	child->driver_data = child_as_interface;
+	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);
+	}
+	if (child_as_interface != NULL) {
+		free(child_as_interface);
+	}
+
+	return rc;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmid/usbmid.h
===================================================================
--- uspace/drv/usbmid/usbmid.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmid/usbmid.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,66 @@
+/*
+ * 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 <ddf/driver.h>
+#include <usb/usb.h>
+#include <usb/pipes.h>
+#include <usb/debug.h>
+#include <usb/devdrv.h>
+
+#define NAME "usbmid"
+
+/** Container for single interface in a MID device. */
+typedef struct {
+	/** Function container. */
+	ddf_fun_t *fun;
+
+	/** Interface number. */
+	int interface_no;
+} usbmid_interface_t;
+
+usbmid_interface_t *usbmid_interface_create(ddf_fun_t *, int);
+bool usbmid_explore_device(usb_device_t *);
+int usbmid_spawn_interface_child(usb_device_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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmid/usbmid.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,1 @@
+100 usb&mid
Index: uspace/drv/usbmouse/Makefile
===================================================================
--- uspace/drv/usbmouse/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmouse/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,40 @@
+#
+# 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 = $(LIBDRV_PREFIX)/libdrv.a $(LIBUSB_PREFIX)/libusb.a
+EXTRA_CFLAGS += -I$(LIBDRV_PREFIX)/include -I$(LIBUSB_PREFIX)/include -I.
+
+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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmouse/init.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,160 @@
+/*
+ * 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/classes/hid.h>
+#include <usb/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;
+	}
+	
+	/* Open the control pipe. */
+	rc = usb_pipe_start_session(&dev->ctrl_pipe);
+	if (rc != EOK) {
+		goto leave;
+	}
+	
+	/* Set the boot protocol. */
+	rc = usb_control_request_set(&dev->ctrl_pipe,
+	    USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE,
+	    USB_HIDREQ_SET_PROTOCOL, USB_HID_PROTOCOL_BOOT, dev->interface_no,
+	    NULL, 0);
+	if (rc != EOK) {
+		goto leave;
+	}
+	
+	/* Close the control pipe (ignore errors). */
+	usb_pipe_end_session(&dev->ctrl_pipe);
+
+
+	/* Everything allright. */
+	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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmouse/main.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 drvusbmouse
+ * @{
+ */
+/**
+ * @file
+ * Main routines of USB boot protocol mouse driver.
+ */
+#include "mouse.h"
+#include <usb/debug.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 %llu).\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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmouse/mouse.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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.
+ */
+
+/** @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;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/usbmouse/mouse.h
===================================================================
--- uspace/drv/usbmouse/mouse.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmouse/mouse.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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/devdrv.h>
+#include <usb/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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/usbmouse/usbmouse.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,1 @@
+100 usb&interface&class=HID&subclass=0x01&protocol=0x02
Index: uspace/drv/vhc/Makefile
===================================================================
--- uspace/drv/vhc/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/Makefile	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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.
+#
+
+USPACE_PREFIX = ../..
+LIBS = \
+	$(LIBUSB_PREFIX)/libusb.a \
+	$(LIBUSBVIRT_PREFIX)/libusbvirt.a \
+	$(LIBDRV_PREFIX)/libdrv.a
+EXTRA_CFLAGS += \
+	-I$(LIBUSBVIRT_PREFIX)/include \
+	-I$(LIBUSB_PREFIX)/include \
+	-I$(LIBDRV_PREFIX)/include
+BINARY = vhc
+
+SOURCES = \
+	hub/hub.c \
+	hub/virthub.c \
+	hub/virthubops.c \
+	conndev.c \
+	connhost.c \
+	devices.c \
+	hc.c \
+	hcd.c \
+	hub.c
+
+include $(USPACE_PREFIX)/Makefile.common
Index: uspace/drv/vhc/conn.h
===================================================================
--- uspace/drv/vhc/conn.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/conn.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,60 @@
+/*
+ * 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"
+#include "devices.h"
+
+void connection_handler_host(sysarg_t);
+
+extern usbhc_iface_t vhc_iface;
+extern usb_iface_t vhc_usb_iface;
+extern usb_iface_t rh_usb_iface;
+
+void address_init(void);
+
+
+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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/conndev.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,131 @@
+/*
+ * 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 calls from virtual device (implementation).
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <usbvirt/hub.h>
+
+#include "conn.h"
+#include "hc.h"
+#include "hub.h"
+
+#define DEVICE_NAME_MAXLENGTH 32
+
+static int get_device_name(int phone, char *buffer, size_t len)
+{
+	ipc_call_t answer_data;
+	sysarg_t answer_rc;
+	aid_t req;
+	int rc;
+	
+	req = async_send_0(phone,
+	    IPC_M_USBVIRT_GET_NAME,
+	    &answer_data);
+	
+	rc = async_data_read_start(phone, buffer, len);
+	if (rc != EOK) {
+		async_wait_for(req, NULL);
+		return EINVAL;
+	}
+	
+	async_wait_for(req, &answer_rc);
+	rc = (int)answer_rc;
+	
+	if (IPC_GET_ARG1(answer_data) < len) {
+		len = IPC_GET_ARG1(answer_data);
+	} else {
+		len--;
+	}
+	buffer[len] = 0;
+	
+	return rc;
+}
+
+/** 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)
+{
+	sysarg_t method = IPC_GET_IMETHOD(*icall);
+
+	if (method == IPC_M_CONNECT_TO_ME) {
+		int callback = IPC_GET_ARG5(*icall);
+		virtdev_connection_t *dev
+		    = virtdev_add_device(callback, (sysarg_t)fibril_get_id());
+		if (!dev) {
+			async_answer_0(icallid, EEXISTS);
+			async_hangup(callback);
+			return;
+		}
+		async_answer_0(icallid, EOK);
+
+		char devname[DEVICE_NAME_MAXLENGTH + 1];
+		int rc = get_device_name(callback, devname, DEVICE_NAME_MAXLENGTH);
+
+		usb_log_info("New virtual device `%s' (id = %x).\n",
+		    rc == EOK ? devname : "<unknown>", dev->id);
+
+		return;
+	}
+
+	async_answer_0(icallid, EINVAL);
+}
+
+/** Callback for DDF when client disconnects.
+ *
+ * @param fun Device function the client was connected to.
+ */
+void on_client_close(ddf_fun_t *fun)
+{
+	/*
+	 * Maybe a virtual device is being unplugged.
+	 */
+	virtdev_connection_t *dev = virtdev_find((sysarg_t)fibril_get_id());
+	if (dev == NULL) {
+		return;
+	}
+
+	usb_log_info("Virtual device disconnected (id = %x).\n", dev->id);
+	virtdev_destroy_device(dev);
+}
+
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/connhost.c
===================================================================
--- uspace/drv/vhc/connhost.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/connhost.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,420 @@
+/*
+ * 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 calls from host (implementation).
+ */
+#include <assert.h>
+#include <errno.h>
+#include <usb/usb.h>
+#include <usb/addrkeep.h>
+#include <usb/ddfiface.h>
+
+#include "vhcd.h"
+#include "conn.h"
+#include "hc.h"
+
+
+typedef struct {
+	usb_direction_t direction;
+	usbhc_iface_transfer_out_callback_t out_callback;
+	usbhc_iface_transfer_in_callback_t in_callback;
+	ddf_fun_t *fun;
+	size_t reported_size;
+	void *arg;
+} transfer_info_t;
+
+typedef struct {
+	usb_direction_t direction;
+	usb_target_t target;
+	usbhc_iface_transfer_out_callback_t out_callback;
+	usbhc_iface_transfer_in_callback_t in_callback;
+	ddf_fun_t *fun;
+	void *arg;
+	void *data_buffer;
+	size_t data_buffer_size;
+} control_transfer_info_t;
+
+static void universal_callback(void *buffer, size_t size,
+    int outcome, void *arg)
+{
+	transfer_info_t *transfer = (transfer_info_t *) arg;
+
+	if (transfer->reported_size != (size_t) -1) {
+		size = transfer->reported_size;
+	}
+
+	switch (transfer->direction) {
+		case USB_DIRECTION_IN:
+			transfer->in_callback(transfer->fun,
+			    outcome, size,
+			    transfer->arg);
+			break;
+		case USB_DIRECTION_OUT:
+			transfer->out_callback(transfer->fun,
+			    outcome,
+			    transfer->arg);
+			break;
+		default:
+			assert(false && "unreachable");
+			break;
+	}
+
+	free(transfer);
+}
+
+static transfer_info_t *create_transfer_info(ddf_fun_t *fun,
+    usb_direction_t direction, void *arg)
+{
+	transfer_info_t *transfer = malloc(sizeof(transfer_info_t));
+
+	transfer->direction = direction;
+	transfer->in_callback = NULL;
+	transfer->out_callback = NULL;
+	transfer->arg = arg;
+	transfer->fun = fun;
+	transfer->reported_size = (size_t) -1;
+
+	return transfer;
+}
+
+static void control_abort_prematurely(control_transfer_info_t *transfer,
+    size_t size, int outcome)
+{
+	switch (transfer->direction) {
+		case USB_DIRECTION_IN:
+			transfer->in_callback(transfer->fun,
+			    outcome, size,
+			    transfer->arg);
+			break;
+		case USB_DIRECTION_OUT:
+			transfer->out_callback(transfer->fun,
+			    outcome,
+			    transfer->arg);
+			break;
+		default:
+			assert(false && "unreachable");
+			break;
+	}
+}
+
+static void control_callback_two(void *buffer, size_t size,
+    int outcome, void *arg)
+{
+	control_transfer_info_t *ctrl_transfer = (control_transfer_info_t *) arg;
+
+	if (outcome != EOK) {
+		control_abort_prematurely(ctrl_transfer, outcome, size);
+		free(ctrl_transfer);
+		return;
+	}
+
+	transfer_info_t *transfer  = create_transfer_info(ctrl_transfer->fun,
+	    ctrl_transfer->direction, ctrl_transfer->arg);
+	transfer->out_callback = ctrl_transfer->out_callback;
+	transfer->in_callback = ctrl_transfer->in_callback;
+	transfer->reported_size = size;
+
+	switch (ctrl_transfer->direction) {
+		case USB_DIRECTION_IN:
+			hc_add_transaction_to_device(false, ctrl_transfer->target,
+			    USB_TRANSFER_CONTROL,
+			    NULL, 0,
+			    universal_callback, transfer);
+			break;
+		case USB_DIRECTION_OUT:
+			hc_add_transaction_from_device(ctrl_transfer->target,
+			    USB_TRANSFER_CONTROL,
+			    NULL, 0,
+			    universal_callback, transfer);
+			break;
+		default:
+			assert(false && "unreachable");
+			break;
+	}
+
+	free(ctrl_transfer);
+}
+
+static void control_callback_one(void *buffer, size_t size,
+    int outcome, void *arg)
+{
+	control_transfer_info_t *transfer = (control_transfer_info_t *) arg;
+
+	if (outcome != EOK) {
+		control_abort_prematurely(transfer, outcome, size);
+		free(transfer);
+		return;
+	}
+
+	switch (transfer->direction) {
+		case USB_DIRECTION_IN:
+			hc_add_transaction_from_device(transfer->target,
+			    USB_TRANSFER_CONTROL,
+			    transfer->data_buffer, transfer->data_buffer_size,
+			    control_callback_two, transfer);
+			break;
+		case USB_DIRECTION_OUT:
+			hc_add_transaction_to_device(false, transfer->target,
+			    USB_TRANSFER_CONTROL,
+			    transfer->data_buffer, transfer->data_buffer_size,
+			    control_callback_two, transfer);
+			break;
+		default:
+			assert(false && "unreachable");
+			break;
+	}
+}
+
+static control_transfer_info_t *create_control_transfer_info(ddf_fun_t *fun,
+    usb_direction_t direction, usb_target_t target,
+    void *data_buffer, size_t data_buffer_size,
+    void *arg)
+{
+	control_transfer_info_t *transfer
+	    = malloc(sizeof(control_transfer_info_t));
+
+	transfer->direction = direction;
+	transfer->target = target;
+	transfer->in_callback = NULL;
+	transfer->out_callback = NULL;
+	transfer->arg = arg;
+	transfer->fun = fun;
+	transfer->data_buffer = data_buffer;
+	transfer->data_buffer_size = data_buffer_size;
+
+	return transfer;
+}
+
+static int enqueue_transfer_out(ddf_fun_t *fun,
+    usb_target_t target, usb_transfer_type_t transfer_type,
+    void *buffer, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	usb_log_debug2("Transfer OUT [%d.%d (%s); %zu].\n",
+	    target.address, target.endpoint,
+	    usb_str_transfer_type(transfer_type),
+	    size);
+
+	transfer_info_t *transfer
+	    = create_transfer_info(fun, USB_DIRECTION_OUT, arg);
+	transfer->out_callback = callback;
+
+	hc_add_transaction_to_device(false, target, transfer_type, buffer, size,
+	    universal_callback, transfer);
+
+	return EOK;
+}
+
+static int enqueue_transfer_in(ddf_fun_t *fun,
+    usb_target_t target, usb_transfer_type_t transfer_type,
+    void *buffer, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	usb_log_debug2("Transfer IN [%d.%d (%s); %zu].\n",
+	    target.address, target.endpoint,
+	    usb_str_transfer_type(transfer_type),
+	    size);
+
+	transfer_info_t *transfer
+	    = create_transfer_info(fun, USB_DIRECTION_IN, arg);
+	transfer->in_callback = callback;
+
+	hc_add_transaction_from_device(target, transfer_type, buffer, size,
+	    universal_callback, transfer);
+
+	return EOK;
+}
+
+
+static int interrupt_out(ddf_fun_t *fun, usb_target_t target,
+    size_t max_packet_size,
+    void *data, size_t size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	return enqueue_transfer_out(fun, target, USB_TRANSFER_INTERRUPT,
+	    data, size,
+	    callback, arg);
+}
+
+static int interrupt_in(ddf_fun_t *fun, usb_target_t target,
+    size_t max_packet_size,
+    void *data, size_t size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	return enqueue_transfer_in(fun, target, USB_TRANSFER_INTERRUPT,
+	    data, size,
+	    callback, arg);
+}
+
+static int control_write(ddf_fun_t *fun, usb_target_t target,
+    size_t max_packet_size,
+    void *setup_packet, size_t setup_packet_size,
+    void *data, size_t data_size,
+    usbhc_iface_transfer_out_callback_t callback, void *arg)
+{
+	control_transfer_info_t *transfer
+	    = create_control_transfer_info(fun, USB_DIRECTION_OUT, target,
+	    data, data_size, arg);
+	transfer->out_callback = callback;
+
+	hc_add_transaction_to_device(true, target, USB_TRANSFER_CONTROL,
+	    setup_packet, setup_packet_size,
+	    control_callback_one, transfer);
+
+	return EOK;
+}
+
+static int control_read(ddf_fun_t *fun, usb_target_t target,
+    size_t max_packet_size,
+    void *setup_packet, size_t setup_packet_size,
+    void *data, size_t data_size,
+    usbhc_iface_transfer_in_callback_t callback, void *arg)
+{
+	control_transfer_info_t *transfer
+	    = create_control_transfer_info(fun, USB_DIRECTION_IN, target,
+	    data, data_size, arg);
+	transfer->in_callback = callback;
+
+	hc_add_transaction_to_device(true, target, USB_TRANSFER_CONTROL,
+	    setup_packet, setup_packet_size,
+	    control_callback_one, transfer);
+
+	return EOK;
+}
+
+static usb_address_keeping_t addresses;
+
+static int tell_address(ddf_fun_t *fun, devman_handle_t handle,
+    usb_address_t *address)
+{
+	usb_log_debug("tell_address(fun \"%s\", handle %zu)\n",
+	    fun->name, (size_t) fun->handle);
+	usb_address_t addr = usb_address_keeping_find(&addresses, handle);
+	if (addr < 0) {
+		return addr;
+	}
+
+	*address = addr;
+	return EOK;
+}
+
+static int reserve_default_address(ddf_fun_t *fun, usb_speed_t ignored)
+{
+	usb_address_keeping_reserve_default(&addresses);
+	return EOK;
+}
+
+static int release_default_address(ddf_fun_t *fun)
+{
+	usb_address_keeping_release_default(&addresses);
+	return EOK;
+}
+
+static int request_address(ddf_fun_t *fun, usb_speed_t ignored,
+    usb_address_t *address)
+{
+	usb_address_t addr = usb_address_keeping_request(&addresses);
+	if (addr < 0) {
+		return (int)addr;
+	}
+
+	*address = addr;
+	return EOK;
+}
+
+static int release_address(ddf_fun_t *fun, usb_address_t address)
+{
+	return usb_address_keeping_release(&addresses, address);
+}
+
+static int bind_address(ddf_fun_t *fun, usb_address_t address,
+    devman_handle_t handle)
+{
+	usb_address_keeping_devman_bind(&addresses, address, handle);
+	return EOK;
+}
+
+static int usb_iface_get_hc_handle_rh_impl(ddf_fun_t *root_hub_fun,
+    devman_handle_t *handle)
+{
+	ddf_fun_t *hc_fun = root_hub_fun->driver_data;
+	assert(hc_fun != NULL);
+
+	*handle = hc_fun->handle;
+
+	usb_log_debug("usb_iface_get_hc_handle_rh_impl returns %zu\n", *handle);
+
+	return EOK;
+}
+
+static int tell_address_rh(ddf_fun_t *root_hub_fun, devman_handle_t handle,
+    usb_address_t *address)
+{
+	ddf_fun_t *hc_fun = root_hub_fun->driver_data;
+	assert(hc_fun != NULL);
+
+	return tell_address(hc_fun, root_hub_fun->handle, address);
+}
+
+void address_init(void)
+{
+	usb_address_keeping_init(&addresses, 50);
+}
+
+usbhc_iface_t vhc_iface = {
+	.reserve_default_address = reserve_default_address,
+	.release_default_address = release_default_address,
+	.request_address = request_address,
+	.bind_address = bind_address,
+	.release_address = release_address,
+
+	.interrupt_out = interrupt_out,
+	.interrupt_in = interrupt_in,
+
+	.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/devices.c
===================================================================
--- uspace/drv/vhc/devices.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/devices.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,235 @@
+/*
+ * 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 device management (implementation).
+ */
+
+#include <adt/list.h>
+#include <bool.h>
+#include <async.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usbvirt/hub.h>
+
+#include "devices.h"
+#include "hub.h"
+#include "hub/virthub.h"
+#include "vhcd.h"
+
+#define list_foreach(pos, head) \
+	for (pos = (head)->next; pos != (head); \
+        	pos = pos->next)
+
+static LIST_INITIALIZE(devices);
+
+/** Create virtual device.
+ *
+ * @param phone Callback phone.
+ * @param id Device id.
+ * @return New device.
+ * @retval NULL Out of memory.
+ */
+virtdev_connection_t *virtdev_add_device(int phone, sysarg_t id)
+{
+	virtdev_connection_t *dev = (virtdev_connection_t *)
+	    malloc(sizeof(virtdev_connection_t));
+	if (dev == NULL) {
+		return NULL;
+	}
+
+	dev->phone = phone;
+	dev->id = id;
+	list_append(&dev->link, &devices);
+	
+	virthub_connect_device(&virtual_hub_device, dev);
+	
+	return dev;
+}
+
+/** Find virtual device by id.
+ *
+ * @param id Device id.
+ * @return Device with given id.
+ * @retval NULL No such device.
+ */
+virtdev_connection_t *virtdev_find(sysarg_t id)
+{
+	link_t *pos;
+	list_foreach(pos, &devices) {
+		virtdev_connection_t *dev
+		    = list_get_instance(pos, virtdev_connection_t, link);
+		if (dev->id == id) {
+			return dev;
+		}
+	}
+
+	return NULL;
+}
+
+/** Destroy virtual device.
+ */
+void virtdev_destroy_device(virtdev_connection_t *dev)
+{
+	virthub_disconnect_device(&virtual_hub_device, dev);
+	list_remove(&dev->link);
+	free(dev);
+}
+
+/** Send data to all connected devices.
+ *
+ * @param transaction Transaction to be sent over the bus.
+ */
+int virtdev_send_to_all(transaction_t *transaction)
+{
+	/* For easier debugging. */
+	switch (transaction->type) {
+		case USBVIRT_TRANSACTION_SETUP:
+		case USBVIRT_TRANSACTION_OUT:
+			transaction->actual_len = transaction->len;
+			break;
+		case USBVIRT_TRANSACTION_IN:
+			transaction->actual_len = 0;
+			break;
+		default:
+			assert(false && "unreachable branch in switch()");
+	}
+	int outcome = EBADCHECKSUM;
+
+	link_t *pos;
+	list_foreach(pos, &devices) {
+		virtdev_connection_t *dev
+		    = list_get_instance(pos, virtdev_connection_t, link);
+		
+		if (!virthub_is_device_enabled(&virtual_hub_device, dev)) {
+			continue;
+		}
+		
+		ipc_call_t answer_data;
+		sysarg_t answer_rc;
+		aid_t req;
+		int rc = EOK;
+		int method = IPC_M_USBVIRT_TRANSACTION_SETUP;
+		
+		switch (transaction->type) {
+			case USBVIRT_TRANSACTION_SETUP:
+				method = IPC_M_USBVIRT_TRANSACTION_SETUP;
+				break;
+			case USBVIRT_TRANSACTION_IN:
+				method = IPC_M_USBVIRT_TRANSACTION_IN;
+				break;
+			case USBVIRT_TRANSACTION_OUT:
+				method = IPC_M_USBVIRT_TRANSACTION_OUT;
+				break;
+		}
+		
+		req = async_send_3(dev->phone,
+		    method,
+		    transaction->target.address,
+		    transaction->target.endpoint,
+		    transaction->len,
+		    &answer_data);
+		
+		if (transaction->len > 0) {
+			if (transaction->type == USBVIRT_TRANSACTION_IN) {
+				rc = async_data_read_start(dev->phone,
+				    transaction->buffer, transaction->len);
+			} else {
+				rc = async_data_write_start(dev->phone,
+				    transaction->buffer, transaction->len);
+			}
+		}
+		
+		if (rc != EOK) {
+			async_wait_for(req, NULL);
+		} else {
+			async_wait_for(req, &answer_rc);
+			transaction->actual_len = IPC_GET_ARG1(answer_data);
+			rc = (int)answer_rc;
+		}
+
+		/*
+		 * If at least one device was able to accept this
+		 * transaction and process it, we can announce success.
+		 */
+		if (rc == EOK) {
+			outcome = EOK;
+		}
+	}
+	
+	/*
+	 * Send the data to the virtual hub as well
+	 * (if the address matches).
+	 */
+	if (virtual_hub_device.address == transaction->target.address) {
+		size_t tmp;
+		usb_log_debug2("Sending `%s' transaction to hub.\n",
+		    usbvirt_str_transaction_type(transaction->type));
+		switch (transaction->type) {
+			case USBVIRT_TRANSACTION_SETUP:
+				virtual_hub_device.transaction_setup(
+				    &virtual_hub_device,
+				    transaction->target.endpoint,
+				    transaction->buffer, transaction->len);
+				break;
+				
+			case USBVIRT_TRANSACTION_IN:
+				virtual_hub_device.transaction_in(
+				    &virtual_hub_device,
+				    transaction->target.endpoint,
+				    transaction->buffer, transaction->len,
+				    &tmp);
+				transaction->actual_len = tmp;
+				break;
+				
+			case USBVIRT_TRANSACTION_OUT:
+				virtual_hub_device.transaction_out(
+				    &virtual_hub_device,
+				    transaction->target.endpoint,
+				    transaction->buffer, transaction->len);
+				break;
+		}
+		outcome = EOK;
+	}
+	
+	/*
+	 * TODO: maybe screw some transactions to get more
+	 * real-life image.
+	 */
+	return outcome;
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/devices.h
===================================================================
--- uspace/drv/vhc/devices.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/devices.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,61 @@
+/*
+ * 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 device management.
+ */
+#ifndef VHCD_DEVICES_H_
+#define VHCD_DEVICES_H_
+
+#include <adt/list.h>
+#include <usb/usb.h>
+
+#include "hc.h"
+
+/** Connected virtual device. */
+typedef struct {
+	/** Phone used when sending data to device. */
+	int phone;
+	/** Unique identification. */
+	sysarg_t id;
+	/** Linked-list handle. */
+	link_t link;
+} virtdev_connection_t;
+
+virtdev_connection_t *virtdev_add_device(int, sysarg_t);
+virtdev_connection_t *virtdev_find(sysarg_t);
+void virtdev_destroy_device(virtdev_connection_t *);
+int virtdev_send_to_all(transaction_t *);
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/vhc/hc.c
===================================================================
--- uspace/drv/vhc/hc.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/hc.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,209 @@
+/*
+ * 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 HC (implementation).
+ */
+
+#include <adt/list.h>
+#include <bool.h>
+#include <async.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <str_error.h>
+
+#include <usbvirt/hub.h>
+
+#include "vhcd.h"
+#include "hc.h"
+#include "devices.h"
+#include "hub.h"
+
+#define USLEEP_BASE (0 * 5 * 1000)
+
+#define USLEEP_VAR 50
+
+#define SHORTENING_VAR 15
+
+#define PROB_OUTCOME_BABBLE 5
+#define PROB_OUTCOME_CRCERROR 7
+
+#define PROB_TEST(var, new_value, prob, number) \
+	do { \
+		if (((number) % (prob)) == 0) { \
+			var = (new_value); \
+		} \
+	} while (0)
+
+static link_t transaction_list;
+
+#define TRANSACTION_FORMAT "T[%d.%d %s/%s (%d)]"
+#define TRANSACTION_PRINTF(t) \
+	(t).target.address, (t).target.endpoint, \
+	usb_str_transfer_type((t).transfer_type), \
+	usbvirt_str_transaction_type((t).type), \
+	(int)(t).len
+
+#define transaction_get_instance(lnk) \
+	list_get_instance(lnk, transaction_t, link)
+
+#define HUB_STATUS_MAX_LEN (HUB_PORT_COUNT + 64)
+
+static inline unsigned int pseudo_random(unsigned int *seed)
+{
+	*seed = ((*seed) * 873511) % 22348977 + 7;
+	return ((*seed) >> 8);
+}
+
+/** Call transaction callback.
+ * Calling this callback informs the backend that transaction was processed.
+ */
+static void process_transaction_with_outcome(transaction_t * transaction,
+    int outcome)
+{
+	usb_log_debug2("Transaction " TRANSACTION_FORMAT " done: %s.\n",
+	    TRANSACTION_PRINTF(*transaction),
+	    str_error(outcome));
+	
+	transaction->callback(transaction->buffer, transaction->actual_len,
+	    outcome, transaction->callback_arg);
+}
+
+/** Host controller manager main function.
+ */
+static int hc_manager_fibril(void *arg)
+{
+	list_initialize(&transaction_list);
+	
+	static unsigned int seed = 4573;
+	
+	usb_log_info("Transaction processor ready.\n");
+	
+	while (true) {
+		async_usleep(USLEEP_BASE + (pseudo_random(&seed) % USLEEP_VAR));
+		
+		if (list_empty(&transaction_list)) {
+			continue;
+		}
+		
+		char ports[HUB_STATUS_MAX_LEN + 1];
+		virthub_get_status(&virtual_hub_device, ports, HUB_STATUS_MAX_LEN);
+		
+		link_t *first_transaction_link = transaction_list.next;
+		transaction_t *transaction
+		    = transaction_get_instance(first_transaction_link);
+		list_remove(first_transaction_link);
+		
+		usb_log_debug("Processing " TRANSACTION_FORMAT " [%s].\n",
+		    TRANSACTION_PRINTF(*transaction), ports);
+
+		int outcome;
+		outcome = virtdev_send_to_all(transaction);
+		
+		process_transaction_with_outcome(transaction, outcome);
+
+		free(transaction);
+	}
+
+	assert(false && "unreachable");
+	return EOK;
+}
+
+void hc_manager(void)
+{
+	fid_t fid = fibril_create(hc_manager_fibril, NULL);
+	if (fid == 0) {
+		usb_log_fatal("Failed to start HC manager fibril.\n");
+		return;
+	}
+	fibril_add_ready(fid);
+}
+
+/** Create new transaction
+ */
+static transaction_t *transaction_create(usbvirt_transaction_type_t type,
+    usb_target_t target, usb_transfer_type_t transfer_type,
+    void * buffer, size_t len,
+    hc_transaction_done_callback_t callback, void * arg)
+{
+	transaction_t * transaction = malloc(sizeof(transaction_t));
+	
+	list_initialize(&transaction->link);
+	transaction->type = type;
+	transaction->transfer_type = transfer_type;
+	transaction->target = target;
+	transaction->buffer = buffer;
+	transaction->len = len;
+	transaction->actual_len = len;
+	transaction->callback = callback;
+	transaction->callback_arg = arg;
+
+	return transaction;
+}
+
+static void hc_add_transaction(transaction_t *transaction)
+{
+	usb_log_debug("Adding transaction " TRANSACTION_FORMAT ".\n",
+	    TRANSACTION_PRINTF(*transaction));
+	list_append(&transaction->link, &transaction_list);
+}
+
+/** Add transaction directioned towards the device.
+ */
+void hc_add_transaction_to_device(bool setup, usb_target_t target,
+    usb_transfer_type_t transfer_type,
+    void * buffer, size_t len,
+    hc_transaction_done_callback_t callback, void * arg)
+{
+	transaction_t *transaction = transaction_create(
+	    setup ? USBVIRT_TRANSACTION_SETUP : USBVIRT_TRANSACTION_OUT,
+	    target, transfer_type,
+	    buffer, len, callback, arg);
+	hc_add_transaction(transaction);
+}
+
+/** Add transaction directioned from the device.
+ */
+void hc_add_transaction_from_device(usb_target_t target,
+    usb_transfer_type_t transfer_type,
+    void * buffer, size_t len,
+    hc_transaction_done_callback_t callback, void * arg)
+{
+	transaction_t *transaction = transaction_create(USBVIRT_TRANSACTION_IN,
+	    target, transfer_type,
+	    buffer, len, callback, arg);
+	hc_add_transaction(transaction);
+}
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/hc.h
===================================================================
--- uspace/drv/vhc/hc.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/hc.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,91 @@
+/*
+ * 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 HC.
+ */
+#ifndef VHCD_HC_H_
+#define VHCD_HC_H_
+
+#include <usb/usb.h>
+#include <usbvirt/hub.h>
+
+/** Callback after transaction is sent to USB.
+ *
+ * @param buffer Transaction data buffer.
+ * @param size Transaction data size.
+ * @param outcome Transaction outcome.
+ * @param arg Custom argument.
+ */
+typedef void (*hc_transaction_done_callback_t)(void *buffer, size_t size,
+    int outcome, void *arg);
+
+/** Pending transaction details. */
+typedef struct {
+	/** Linked-list link. */
+	link_t link;
+	/** Transaction type. */
+	usbvirt_transaction_type_t type;
+	/** Transfer type. */
+	usb_transfer_type_t transfer_type;
+	/** Device address. */
+	usb_target_t target;
+	/** Direction of the transaction. */
+	usb_direction_t direction;
+	/** Transaction data buffer. */
+	void * buffer;
+	/** Transaction data length. */
+	size_t len;
+	/** Data length actually transfered. */
+	size_t actual_len;
+	/** Callback after transaction is done. */
+	hc_transaction_done_callback_t callback;
+	/** Argument to the callback. */
+	void * callback_arg;
+} transaction_t;
+
+void hc_manager(void);
+
+void hc_add_transaction_to_device(bool setup,
+    usb_target_t target, usb_transfer_type_t transfer_type,
+    void * buffer, size_t len,
+    hc_transaction_done_callback_t callback, void * arg);
+
+void hc_add_transaction_from_device(
+    usb_target_t target, usb_transfer_type_t transfer_type,
+    void * buffer, size_t len,
+    hc_transaction_done_callback_t callback, void * arg);
+
+
+#endif
+/**
+ * @}
+ */
Index: uspace/drv/vhc/hcd.c
===================================================================
--- uspace/drv/vhc/hcd.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/hcd.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,147 @@
+/*
+ * 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 host controller driver.
+ */
+
+#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 "hc.h"
+#include "devices.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;
+
+	/*
+	 * Currently, we know how to simulate only single HC.
+	 */
+	if (vhc_count > 0) {
+		return ELIMIT;
+	}
+
+	/*
+	 * Create exposed function representing the host controller
+	 * itself.
+	 */
+	ddf_fun_t *hc = ddf_fun_create(dev, fun_exposed, "hc");
+	if (hc == NULL) {
+		usb_log_fatal("Failed to create device function.\n");
+		return ENOMEM;
+	}
+
+	hc->ops = &vhc_ops;
+
+	rc = ddf_fun_bind(hc);
+	if (rc != EOK) {
+		usb_log_fatal("Failed to bind HC function: %s.\n",
+		    str_error(rc));
+		return rc;
+	}
+
+	ddf_fun_add_to_class(hc, "usbhc");
+
+	/*
+	 * Initialize our hub and announce its presence.
+	 */
+	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);
+
+	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[])
+{	
+	/*
+	 * Temporary workaround. Wait a little bit to be the last driver
+	 * in devman output.
+	 */
+	//sleep(5);
+
+	usb_log_enable(USB_LOG_LEVEL_DEFAULT, NAME);
+
+	printf(NAME ": virtual USB host controller driver.\n");
+
+	/*
+	 * Initialize address management.
+	 */
+	address_init();
+
+	/*
+	 * Run the transfer scheduler.
+	 */
+	hc_manager();
+
+	/*
+	 * We are also a driver within devman framework.
+	 */
+	return ddf_driver_main(&vhc_driver);
+}
+
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/hub.c
===================================================================
--- uspace/drv/vhc/hub.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/hub.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,131 @@
+/*
+ * 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/hub.h>
+#include <usbvirt/device.h>
+#include <errno.h>
+#include <str_error.h>
+#include <stdlib.h>
+#include <ddf/driver.h>
+#include <devman.h>
+#include <usb/hub.h>
+#include <usb/recognise.h>
+
+#include "hub.h"
+#include "hub/virthub.h"
+#include "vhcd.h"
+#include "conn.h"
+
+usbvirt_device_t virtual_hub_device;
+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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/hub.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,52 @@
+/*
+ * 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 "devices.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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/hub/hub.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,511 @@
+/*
+ * 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/hub.h>
+#include <usbvirt/device.h>
+#include <errno.h>
+#include <str_error.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <ddf/driver.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, size_t index)
+{
+	port->connected_device = NULL;
+	port->index = index;
+	port->state = HUB_PORT_STATE_NOT_CONFIGURED;
+	port->status_change = 0;
+}
+
+/** 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], i + 1);
+	}
+	hub->custom_data = NULL;
+	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;
+	}
+
+	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:
+			set_port_state_delayed(hub, port_index,
+			    10, state, HUB_PORT_STATE_ENABLED);
+			break;
+		case HUB_PORT_STATE_RESETTING:
+			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);
+	port->status_change |= change;
+}
+
+/** 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);
+}
+
+/** 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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/hub/hub.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 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;
+
+/** 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;
+} hub_port_t;
+
+/** Hub device type. */
+typedef struct {
+	/** 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;
+} hub_t;
+
+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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/hub/virthub.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,271 @@
+/*
+ * 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/hub.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;
+	dev->lib_debug_level = 0;
+	dev->lib_debug_enabled_tags = USBVIRT_DEBUGTAG_ALL;
+
+	hub_t *hub = malloc(sizeof(hub_t));
+	if (hub == NULL) {
+		return ENOMEM;
+	}
+
+	hub_init(hub);
+	dev->device_data = hub;
+
+	int rc;
+#ifdef STANDALONE_HUB
+	dev->name = "hub";
+	rc = usbvirt_connect(dev);
+#else
+	rc = usbvirt_connect_local(dev);
+#endif
+
+	return rc;
+}
+
+/** 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, virtdev_connection_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, virtdev_connection_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 ENOTSUP;
+}
+
+/** 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, virtdev_connection_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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/hub/virthub.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 "../devices.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 *, virtdev_connection_t *);
+int virthub_disconnect_device(usbvirt_device_t *, virtdev_connection_t *);
+bool virthub_is_device_enabled(usbvirt_device_t *, virtdev_connection_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 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/hub/virthubops.c	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,433 @@
+/*
+ * 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 "virthub.h"
+#include "hub.h"
+
+/** Callback when device changes states. */
+static void on_state_change(struct usbvirt_device *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_data(struct usbvirt_device *dev,
+    usb_endpoint_t endpoint,
+    void *buffer, size_t size, size_t *actual_size)
+{
+	if (endpoint != HUB_STATUS_CHANGE_PIPE) {
+		return EINVAL;
+	}
+	
+	hub_t *hub = (hub_t *)dev->device_data;
+
+	hub_acquire(hub);
+
+	uint8_t change_map = hub_get_status_change_bitmap(hub);
+		
+	uint8_t *b = (uint8_t *) buffer;
+	if (size > 0) {
+		*b = change_map;
+		*actual_size = 1;
+	}
+	
+	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,
+    usb_device_request_setup_packet_t *request,
+    uint8_t *data)
+{
+	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,
+    usb_device_request_setup_packet_t *request,
+    uint8_t *data)
+{
+	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,
+    usb_device_request_setup_packet_t *request,
+    uint8_t *data)
+{
+	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,
+    usb_device_request_setup_packet_t *request,
+    uint8_t *data)
+{
+	if (request->value_high == USB_DESCTYPE_HUB) {
+		int rc = dev->control_transfer_reply(dev, 0,
+		    &hub_descriptor, hub_descriptor.length);
+
+		return rc;
+	}
+	/* 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,
+    usb_device_request_setup_packet_t *request,
+    uint8_t *data)
+{
+	uint32_t hub_status = 0;
+
+	return dev->control_transfer_reply(dev, 0,
+	    &hub_status, sizeof(hub_status));
+}
+
+/** 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,
+    usb_device_request_setup_packet_t *request,
+    uint8_t *data)
+{
+	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);
+
+	return dev->control_transfer_reply(dev, 0, &status, 4);
+}
+
+/** 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,
+    usb_device_request_setup_packet_t *request,
+    uint8_t *data)
+{
+	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,
+    usb_device_request_setup_packet_t *request,
+    uint8_t *data)
+{
+	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 USBVIRT_REQUEST_RECIPIENT_OTHER
+/** Recipient: device. */
+#define REC_DEVICE USBVIRT_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) \
+	.request_type = USBVIRT_MAKE_CONTROL_REQUEST_TYPE(direction, \
+	    USBVIRT_REQUEST_TYPE_CLASS, recipient), \
+	.request = req
+
+/** Create a standard request.
+ *
+ * @param direction Request direction.
+ * @param recipient Request recipient.
+ * @param req Request code.
+ */
+#define STD_REQ(direction, recipient, req) \
+	.request_type = USBVIRT_MAKE_CONTROL_REQUEST_TYPE(direction, \
+	    USBVIRT_REQUEST_TYPE_STANDARD, recipient), \
+	.request = req
+
+/** Hub operations on control endpoint zero. */
+static usbvirt_control_transfer_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
+	},
+	USBVIRT_CONTROL_TRANSFER_HANDLER_LAST
+};
+
+
+/** Hub operations. */
+usbvirt_device_ops_t hub_ops = {
+	.control_transfer_handlers = endpoint_zero_handlers,
+	.on_data = NULL,
+	.on_data_request = req_on_data,
+	.on_state_change = on_state_change,
+};
+
+/**
+ * @}
+ */
Index: uspace/drv/vhc/vhc.ma
===================================================================
--- uspace/drv/vhc/vhc.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/vhc.ma	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -0,0 +1,2 @@
+10 usb&hc=vhc
+
Index: uspace/drv/vhc/vhcd.h
===================================================================
--- uspace/drv/vhc/vhcd.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
+++ uspace/drv/vhc/vhcd.h	(revision 969585f91e912d72b71cfd6d44243c9504d8d795)
@@ -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 Virtual USB host controller common definitions.
+ */
+#ifndef VHCD_VHCD_H_
+#define VHCD_VHCD_H_
+
+#include <usb/debug.h>
+
+#define NAME "vhc"
+#define NAME_DEV "hcd-virt-dev"
+#define NAMESPACE "usb"
+
+#define DEVMAP_PATH_HC NAMESPACE "/" NAME
+#define DEVMAP_PATH_DEV NAMESPACE "/" NAME_DEV
+
+//#define dprintf(level, format, ...)
+//	usb_dprintf(NAME, (level), format "\n", ##__VA_ARGS__)
+//void dprintf_inval_call(int, ipc_call_t, sysarg_t);
+
+#endif
+/**
+ * @}
+ */
