1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 /* 32 * Defines for converting physical address to VideoCore bus address and back 33 */ 34 35 #ifndef _BCM2835_VCBUS_H_ 36 #define _BCM2835_VCBUS_H_ 37 38 /* 39 * ARM64 define its SOC options in opt_soc.h 40 */ 41 #if defined(__aarch64__) 42 #include "opt_soc.h" 43 #endif 44 45 #define BCM2835_VCBUS_SDRAM_CACHED 0x40000000 46 #define BCM2835_VCBUS_IO_BASE 0x7E000000 47 #define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000 48 49 #if defined(SOC_BCM2835) 50 #define BCM2835_ARM_IO_BASE 0x20000000 51 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_CACHED 52 #else 53 #define BCM2835_ARM_IO_BASE 0x3f000000 54 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_UNCACHED 55 #endif 56 #define BCM2835_ARM_IO_SIZE 0x01000000 57 58 /* 59 * Convert physical address to VC bus address. Should be used 60 * when submitting address over mailbox interface 61 */ 62 #define PHYS_TO_VCBUS(pa) ((pa) + BCM2835_VCBUS_SDRAM_BASE) 63 64 /* Check whether pa bellong top IO window */ 65 #define BCM2835_ARM_IS_IO(pa) (((pa) >= BCM2835_ARM_IO_BASE) && \ 66 ((pa) < BCM2835_ARM_IO_BASE + BCM2835_ARM_IO_SIZE)) 67 68 /* 69 * Convert physical address in IO space to VC bus address. 70 */ 71 #define IO_TO_VCBUS(pa) ((pa - BCM2835_ARM_IO_BASE) + \ 72 BCM2835_VCBUS_IO_BASE) 73 74 /* 75 * Convert address from VC bus space to physical. Should be used 76 * when address is returned by VC over mailbox interface. e.g. 77 * framebuffer base 78 */ 79 #define VCBUS_TO_PHYS(vca) ((vca) & ~(BCM2835_VCBUS_SDRAM_BASE)) 80 81 #endif /* _BCM2835_VCBUS_H_ */ 82