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_IO_BASE 0x7E000000 38 #define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000 39 40 #ifdef SOC_BCM2836 41 #define BCM2835_ARM_IO_BASE 0x3f000000 42 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_UNCACHED 43 #else 44 #define BCM2835_ARM_IO_BASE 0x20000000 45 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_CACHED 46 #endif 47 #define BCM2835_ARM_IO_SIZE 0x01000000 48 49 /* 50 * Convert physical address to VC bus address. Should be used 51 * when submitting address over mailbox interface 52 */ 53 #define PHYS_TO_VCBUS(pa) ((pa) + BCM2835_VCBUS_SDRAM_BASE) 54 55 /* Check whether pa bellong top IO window */ 56 #define BCM2835_ARM_IS_IO(pa) (((pa) >= BCM2835_ARM_IO_BASE) && \ 57 ((pa) < BCM2835_ARM_IO_BASE + BCM2835_ARM_IO_SIZE)) 58 59 /* 60 * Convert physical address in IO space to VC bus address. 61 */ 62 #define IO_TO_VCBUS(pa) ((pa - BCM2835_ARM_IO_BASE) + \ 63 BCM2835_VCBUS_IO_BASE) 64 65 /* 66 * Convert address from VC bus space to physical. Should be used 67 * when address is returned by VC over mailbox interface. e.g. 68 * framebuffer base 69 */ 70 #define VCBUS_TO_PHYS(vca) ((vca) - BCM2835_VCBUS_SDRAM_BASE) 71 72 #endif /* _BCM2835_VCBUS_H_ */ 73