1/* 2 * include/asm-arm/arch-at91/memory.h 3 * 4 * Copyright (C) 2004 SAN People 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21#ifndef __ASM_ARCH_MEMORY_H 22#define __ASM_ARCH_MEMORY_H 23 24#include <asm/hardware.h> 25 26#define PHYS_OFFSET (AT91_SDRAM_BASE) 27 28 29/* 30 * Virtual view <-> DMA view memory address translations 31 * virt_to_bus: Used to translate the virtual address to an 32 * address suitable to be passed to set_dma_addr 33 * bus_to_virt: Used to convert an address for DMA operations 34 * to an address that the kernel can use. 35 */ 36#define __virt_to_bus(x) __virt_to_phys(x) 37#define __bus_to_virt(x) __phys_to_virt(x) 38 39#endif 40