Index: uspace/lib/usb/include/usb/usbmem.h
===================================================================
--- uspace/lib/usb/include/usb/usbmem.h	(revision e8ad0de111c36c17801eb52dd25c0a8b43cb23f9)
+++ uspace/lib/usb/include/usb/usbmem.h	(revision e8ad0de111c36c17801eb52dd25c0a8b43cb23f9)
@@ -0,0 +1,78 @@
+/*
+ * 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.
+ */
+
+#ifndef USBMEM_H
+#define	USBMEM_H
+
+
+// group should be changed - this is not usb specific
+/** @addtogroup usb
+ * @{
+ */
+/** @file definitions of special memory management, used mostly in usb stack
+ *
+ * USB HCD needs traslation between physical and virtual addresses. These
+ * functions implement such functionality. For each allocated virtual address
+ * the memory manager gets also it`s physical translation and remembers it.
+ * Addresses allocated byt this manager can be therefore translated from and to
+ * physical addresses.
+ * Typical use:
+ * void * address = mman_malloc(some_size);
+ * void * physical_address = mman_getPA(address);
+ * void * the_same_address = mman_getVA(physical_address);
+ * void * null_address = mman_getPA(non_existing_address);
+ * mman_free(address);
+ * // physical_address, adress and the_same_address are no longer valid here
+ *
+ *
+ * @note Addresses allocated by this memory manager should be as well
+ * deallocated byt it.
+ *
+ */
+
+#include <sys/types.h>
+
+extern void * mman_malloc(size_t size);
+
+extern void * mman_getVA(void * addr);
+
+extern void * mman_getPA(void * addr);
+
+extern void mman_free(void * addr);
+
+
+
+
+
+
+/** @}
+ */
+
+
+#endif	/* USBMEM_H */
+
Index: uspace/lib/usb/src/usbmem.c
===================================================================
--- uspace/lib/usb/src/usbmem.c	(revision e8ad0de111c36c17801eb52dd25c0a8b43cb23f9)
+++ uspace/lib/usb/src/usbmem.c	(revision e8ad0de111c36c17801eb52dd25c0a8b43cb23f9)
@@ -0,0 +1,113 @@
+/*
+ * 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 libc
+ * @{
+ */
+/** @file implementation of special memory management, used mostly in usb stack
+ */
+
+#include "usb/usbmem.h"
+#include <adt/hash_table.h>
+#include <adt/list.h>
+
+#define ADDR_BUCKETS 1537
+
+hash_table_t * pa2fa_table = NULL;
+hash_table_t * fa2pa_table = NULL;
+
+typedef struct{
+	long addr;
+	link_t link;
+
+}addr_node_t;
+
+static hash_index_t addr_hash(unsigned long key[])
+{
+	return (3*key[0]<<4) % ADDR_BUCKETS;
+}
+
+static int addr_compare(unsigned long key[], hash_count_t keys,
+    link_t *item)
+{
+	addr_node_t *addr_node = hash_table_get_instance(item, addr_node_t, link);
+	return (addr_node->addr == key[0]);
+}
+
+static void addr_remove_callback(link_t *item)
+{
+}
+
+
+static hash_table_operations_t addr_devices_ops = {
+	.hash = addr_hash,
+	.compare = addr_compare,
+	.remove_callback = addr_remove_callback
+};
+
+
+//
+
+
+void * mman_malloc(size_t size){
+	//check if tables were initialized
+	if(!pa2fa_table){
+		pa2fa_table = (hash_table_t*)malloc(sizeof(hash_table_t*));
+		fa2pa_table = (hash_table_t*)malloc(sizeof(hash_table_t*));
+		hash_table_create(pa2fa_table, ADDR_BUCKETS, 1,
+		    &addr_devices_ops);
+		hash_table_create(fa2pa_table, ADDR_BUCKETS, 1,
+		    &addr_devices_ops);
+	}
+	//allocate
+
+	//get translation
+
+	//store translation
+
+
+	return NULL;
+
+}
+
+void * mman_getVA(void * addr){
+	return NULL;
+}
+
+void * mman_getPA(void * addr){
+	return NULL;
+}
+
+void mman_free(void * addr){
+	
+}
+
+
+
+/** @}
+ */