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bcm2835_mbox.h revision 1.2 
      1  1.2  jakllsch /*	$NetBSD: bcm2835_mbox.h,v 1.2 2012/08/22 13:19:47 jakllsch Exp $	*/
      2  1.1     skrll 
      3  1.1     skrll /*-
      4  1.1     skrll  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      5  1.1     skrll  * All rights reserved.
      6  1.1     skrll  *
      7  1.1     skrll  * This code is derived from software contributed to The NetBSD Foundation
      8  1.1     skrll  * by Nick Hudson
      9  1.1     skrll  *
     10  1.1     skrll  * Redistribution and use in source and binary forms, with or without
     11  1.1     skrll  * modification, are permitted provided that the following conditions
     12  1.1     skrll  * are met:
     13  1.1     skrll  * 1. Redistributions of source code must retain the above copyright
     14  1.1     skrll  *    notice, this list of conditions and the following disclaimer.
     15  1.1     skrll  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.1     skrll  *    notice, this list of conditions and the following disclaimer in the
     17  1.1     skrll  *    documentation and/or other materials provided with the distribution.
     18  1.1     skrll  *
     19  1.1     skrll  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.1     skrll  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.1     skrll  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.1     skrll  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.1     skrll  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.1     skrll  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.1     skrll  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.1     skrll  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.1     skrll  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.1     skrll  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.1     skrll  * POSSIBILITY OF SUCH DAMAGE.
     30  1.1     skrll  */
     31  1.1     skrll 
     32  1.1     skrll #ifndef _BCM2835_MBOX_H_
     33  1.1     skrll #define	_BCM2835_MBOX_H_
     34  1.1     skrll 
     35  1.2  jakllsch #include <sys/bus.h>
     36  1.2  jakllsch 
     37  1.1     skrll #define	BCM2835_MBOX_CHAN(mbox) ((mbox) & 0xf)
     38  1.2  jakllsch #define	BCM2835_MBOX_DATA(mbox) (((mbox) & ~0xf) >> 4)
     39  1.1     skrll 
     40  1.1     skrll #define	BCM2835_MBOX_MSG(chan, data) (((chan) & 0xf) | ((data) << 4))
     41  1.1     skrll 
     42  1.2  jakllsch void bcm2835_mbox_read(bus_space_tag_t, bus_space_handle_t, uint8_t,
     43  1.2  jakllsch     uint32_t *);
     44  1.2  jakllsch void bcm2835_mbox_write(bus_space_tag_t, bus_space_handle_t, uint8_t,
     45  1.2  jakllsch     uint32_t);
     46  1.2  jakllsch 
     47  1.1     skrll void bcmmbox_read(uint8_t, uint32_t *);
     48  1.1     skrll void bcmmbox_write(uint8_t, uint32_t);
     49  1.1     skrll 
     50  1.1     skrll #endif /* _BCM2835_MBOX_H_ */
     51