/*- * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ /* * Defines for converting physical address to VideoCore bus address and back */ #ifndef _BCM2835_VCBUS_H_ #define _BCM2835_VCBUS_H_ #define BCM2835_VCBUS_SDRAM_CACHED 0x40000000 #define BCM2835_VCBUS_IO_BASE 0x7E000000 #define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000 #ifdef SOC_BCM2836 #define BCM2835_ARM_IO_BASE 0x3f000000 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_UNCACHED #else #define BCM2835_ARM_IO_BASE 0x20000000 #define BCM2835_VCBUS_SDRAM_BASE BCM2835_VCBUS_SDRAM_CACHED #endif #define BCM2835_ARM_IO_SIZE 0x01000000 /* * Convert physical address to VC bus address. Should be used * when submitting address over mailbox interface */ #define PHYS_TO_VCBUS(pa) ((pa) + BCM2835_VCBUS_SDRAM_BASE) /* Check whether pa bellong top IO window */ #define BCM2835_ARM_IS_IO(pa) (((pa) >= BCM2835_ARM_IO_BASE) && \ ((pa) < BCM2835_ARM_IO_BASE + BCM2835_ARM_IO_SIZE)) /* * Convert physical address in IO space to VC bus address. */ #define IO_TO_VCBUS(pa) ((pa - BCM2835_ARM_IO_BASE) + \ BCM2835_VCBUS_IO_BASE) /* * Convert address from VC bus space to physical. Should be used * when address is returned by VC over mailbox interface. e.g. * framebuffer base */ #define VCBUS_TO_PHYS(vca) ((vca) & ~(BCM2835_VCBUS_SDRAM_BASE)) #endif /* _BCM2835_VCBUS_H_ */ |