Index: uspace/drv/uhci/transfer_list.h
===================================================================
--- uspace/drv/uhci/transfer_list.h	(revision 96005163d202072b0cdf54f68060b64c90325f7f)
+++ uspace/drv/uhci/transfer_list.h	(revision 96005163d202072b0cdf54f68060b64c90325f7f)
@@ -0,0 +1,78 @@
+/*
+ * 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_TRANSFER_LIST_H
+#define DRV_UHCI_TRANSFER_LIST_H
+
+#include "debug.h"
+#include "translating_malloc.h"
+#include "uhci_struct/queue_head.h"
+#include "uhci_struct/transfer_descriptor.h"
+
+typedef struct transfer_list
+{
+	transfer_descriptor_t *first;
+	transfer_descriptor_t *last;
+	queue_head_t *queue_head;
+	uint32_t queue_head_pa;
+} transfer_list_t;
+
+static inline int transfer_list_init(
+  transfer_list_t *instance, transfer_list_t *next)
+{
+	assert(instance);
+	instance->first = NULL;
+	instance->last = NULL;
+	instance->queue_head = trans_malloc(sizeof(queue_head_t));
+	if (!instance->queue_head) {
+		uhci_print_error("Failed to allocate queue head.\n");
+		return ENOMEM;
+	}
+	instance->queue_head_pa = (uintptr_t)addr_to_phys(instance->queue_head);
+
+	uint32_t next_pa = next ? next->queue_head_pa : 0;
+	queue_head_init(instance->queue_head, next_pa);
+	return EOK;
+}
+
+static inline void transfer_list_fini(transfer_list_t *instance)
+{
+	assert(instance);
+	if (instance->queue_head)
+		free(instance->queue_head);
+}
+
+#endif
+/**
+ * @}
+ */