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 PLAT_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