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 /* 37 * ARM64 define its SOC options in opt_soc.h 38 */ 39 #if defined(__aarch64__) 40 #include "opt_soc.h" 41 #endif 42 43 #define BCM2835_VCBUS_SDRAM_CACHED 0x40000000 44 #define BCM2835_VCBUS_IO_BASE 0x7E000000 45 #define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000 46 47 #if defined(SOC_BCM2835) 48 #define BCM2835_ARM_IO_BASE 0x20000000 49 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_CACHED 50 #else 51 #define BCM2835_ARM_IO_BASE 0x3f000000 52 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_UNCACHED 53 #endif 54 #define BCM2835_ARM_IO_SIZE 0x01000000 55 56 /* 57 * Convert physical address to VC bus address. Should be used 58 * when submitting address over mailbox interface 59 */ 60 #define PHYS_TO_VCBUS(pa) ((pa) + BCM2835_VCBUS_SDRAM_BASE) 61 62 /* Check whether pa bellong top IO window */ 63 #define BCM2835_ARM_IS_IO(pa) (((pa) >= BCM2835_ARM_IO_BASE) && \ 64 ((pa) < BCM2835_ARM_IO_BASE + BCM2835_ARM_IO_SIZE)) 65 66 /* 67 * Convert physical address in IO space to VC bus address. 68 */ 69 #define IO_TO_VCBUS(pa) ((pa - BCM2835_ARM_IO_BASE) + \ 70 BCM2835_VCBUS_IO_BASE) 71 72 /* 73 * Convert address from VC bus space to physical. Should be used 74 * when address is returned by VC over mailbox interface. e.g. 75 * framebuffer base 76 */ 77 #define VCBUS_TO_PHYS(vca) ((vca) & ~(BCM2835_VCBUS_SDRAM_BASE)) 78 79 #endif /* _BCM2835_VCBUS_H_ */ 80