1/* 2 * arch/arm/mach-ixp23xx/include/mach/memory.h 3 * 4 * Copyright (c) 2003-2004 Intel Corp. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation; either version 2 of the License, or (at your 9 * option) any later version. 10 */ 11 12#ifndef __ASM_ARCH_MEMORY_H 13#define __ASM_ARCH_MEMORY_H 14 15#include <mach/hardware.h> 16 17/* 18 * Physical DRAM offset. 19 */ 20#define PHYS_OFFSET (0x00000000) 21 22#define IXP23XX_PCI_SDRAM_OFFSET (*((volatile int *)IXP23XX_PCI_SDRAM_BAR) & 0xfffffff0) 23 24#define __phys_to_bus(x) ((x) + (IXP23XX_PCI_SDRAM_OFFSET - PHYS_OFFSET)) 25#define __bus_to_phys(x) ((x) - (IXP23XX_PCI_SDRAM_OFFSET - PHYS_OFFSET)) 26 27#define __virt_to_bus(v) __phys_to_bus(__virt_to_phys(v)) 28#define __bus_to_virt(b) __phys_to_virt(__bus_to_phys(b)) 29#define __pfn_to_bus(p) __phys_to_bus(__pfn_to_phys(p)) 30#define __bus_to_pfn(b) __phys_to_pfn(__bus_to_phys(b)) 31 32#define arch_is_coherent() 1 33 34#endif 35