1 /*- 2 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 /* 30 * Defines for converting physical address to VideoCore bus address and back 31 */ 32 33 #ifndef _BCM2835_VCBUS_H_ 34 #define _BCM2835_VCBUS_H_ 35 36 #define BCM2835_VCBUS_SDRAM_CACHED 0x40000000 37 #define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000 38 39 /* 40 * Convert physical address to VC bus address. Should be used 41 * when submitting address over mailbox interface 42 */ 43 #define PHYS_TO_VCBUS(pa) ((pa) + BCM2835_VCBUS_SDRAM_CACHED) 44 45 /* 46 * Convert address from VC bus space to physical. Should be used 47 * when address is returned by VC over mailbox interface. e.g. 48 * framebuffer base 49 */ 50 #define VCBUS_TO_PHYS(vca) ((vca) - BCM2835_VCBUS_SDRAM_CACHED) 51 52 #endif /* _BCM2835_VCBUS_H_ */ 53