2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
32 * Defines for converting physical address to VideoCore bus address and back
35 #ifndef _BCM2835_VCBUS_H_
36 #define _BCM2835_VCBUS_H_
39 * ARM64 define its SOC options in opt_soc.h
41 #if defined(__aarch64__)
45 #define BCM2835_VCBUS_SDRAM_CACHED 0x40000000
46 #define BCM2835_VCBUS_IO_BASE 0x7E000000
47 #define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000
49 #if defined(SOC_BCM2835)
50 #define BCM2835_ARM_IO_BASE 0x20000000
51 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_CACHED
53 #define BCM2835_ARM_IO_BASE 0x3f000000
54 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_UNCACHED
56 #define BCM2835_ARM_IO_SIZE 0x01000000
59 * Convert physical address to VC bus address. Should be used
60 * when submitting address over mailbox interface
62 #define PHYS_TO_VCBUS(pa) ((pa) + BCM2835_VCBUS_SDRAM_BASE)
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))
69 * Convert physical address in IO space to VC bus address.
71 #define IO_TO_VCBUS(pa) ((pa - BCM2835_ARM_IO_BASE) + \
72 BCM2835_VCBUS_IO_BASE)
75 * Convert address from VC bus space to physical. Should be used
76 * when address is returned by VC over mailbox interface. e.g.
79 #define VCBUS_TO_PHYS(vca) ((vca) & ~(BCM2835_VCBUS_SDRAM_BASE))
81 #endif /* _BCM2835_VCBUS_H_ */