2 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
30 * Defines for converting physical address to VideoCore bus address and back
33 #ifndef _BCM2835_VCBUS_H_
34 #define _BCM2835_VCBUS_H_
36 #define BCM2835_VCBUS_SDRAM_CACHED 0x40000000
37 #define BCM2835_VCBUS_IO_BASE 0x7E000000
38 #define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000
41 #define BCM2835_ARM_IO_BASE 0x3f000000
42 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_UNCACHED
44 #define BCM2835_ARM_IO_BASE 0x20000000
45 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_CACHED
47 #define BCM2835_ARM_IO_SIZE 0x01000000
50 * Convert physical address to VC bus address. Should be used
51 * when submitting address over mailbox interface
53 #define PHYS_TO_VCBUS(pa) ((pa) + BCM2835_VCBUS_SDRAM_BASE)
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))
60 * Convert physical address in IO space to VC bus address.
62 #define IO_TO_VCBUS(pa) ((pa - BCM2835_ARM_IO_BASE) + \
63 BCM2835_VCBUS_IO_BASE)
66 * Convert address from VC bus space to physical. Should be used
67 * when address is returned by VC over mailbox interface. e.g.
70 #define VCBUS_TO_PHYS(vca) ((vca) & ~(BCM2835_VCBUS_SDRAM_BASE))
72 #endif /* _BCM2835_VCBUS_H_ */