53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
|
/*-
|
||
|
|
* Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. 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.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
|
||
|
|
*
|
||
|
|
* $FreeBSD$
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Defines for converting physical address to VideoCore bus address and back
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _BCM2835_VCBUS_H_
|
||
|
|
#define _BCM2835_VCBUS_H_
|
||
|
|
|
||
|
|
#define BCM2835_VCBUS_SDRAM_CACHED 0x40000000
|
||
|
|
#define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Convert physical address to VC bus address. Should be used
|
||
|
|
* when submitting address over mailbox interface
|
||
|
|
*/
|
||
|
|
#define PHYS_TO_VCBUS(pa) ((pa) + BCM2835_VCBUS_SDRAM_CACHED)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Convert address from VC bus space to physical. Should be used
|
||
|
|
* when address is returned by VC over mailbox interface. e.g.
|
||
|
|
* framebuffer base
|
||
|
|
*/
|
||
|
|
#define VCBUS_TO_PHYS(vca) ((vca) - BCM2835_VCBUS_SDRAM_CACHED)
|
||
|
|
|
||
|
|
#endif /* _BCM2835_VCBUS_H_ */
|