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/*-
* 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_IO_BASE 0x7E000000
#define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000
#define BCM2835_ARM_IO_BASE 0x20000000
#define BCM2835_ARM_IO_SIZE 0x02000000
/*
* 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)
/* Check whether pa bellong top IO window */
#define BCM2835_ARM_IS_IO(pa) (((pa) >= BCM2835_ARM_IO_BASE) && \
((pa) < BCM2835_ARM_IO_BASE + BCM2835_ARM_IO_SIZE))
/*
* Convert physical address in IO space to VC bus address.
*/
#define IO_TO_VCBUS(pa) ((pa - BCM2835_ARM_IO_BASE) + \
BCM2835_VCBUS_IO_BASE)
/*
* 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_ */
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