/*
* Copyright (c) 2010 Jan Vesely
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup drvusbuhci
* @{
*/
/** @file
* @brief UHCI driver
*/
#ifndef DRV_UHCI_HW_STRUCT_LINK_POINTER_H
#define DRV_UHCI_HW_STRUCT_LINK_POINTER_H
#include <stdint.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
/**
* @}
*/