Index: uspace/lib/usb/include/usb/usbmem.h
===================================================================
--- uspace/lib/usb/include/usb/usbmem.h	(revision 1879a7de2821a2ed5d8b048b5d94f0e6896b5536)
+++ uspace/lib/usb/include/usb/usbmem.h	(revision 1879a7de2821a2ed5d8b048b5d94f0e6896b5536)
@@ -0,0 +1,81 @@
+/*
+ * 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,
+		size_t alignment,
+		unsigned long max_physical_address);
+
+extern void * mman_getVA(void * addr);
+
+extern void * mman_getPA(void * addr);
+
+extern void mman_free(void * addr);
+
+
+
+
+
+
+/** @}
+ */
+
+
+#endif	/* USBMEM_H */
+