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memory.h

/*
 * arch/arm/mach-ixp23xx/include/mach/memory.h
 *
 * Copyright (c) 2003-2004 Intel Corp.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 */

#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H

#include <mach/hardware.h>

/*
 * Physical DRAM offset.
 */
#define PHYS_OFFSET           (0x00000000)

#define IXP23XX_PCI_SDRAM_OFFSET (*((volatile int *)IXP23XX_PCI_SDRAM_BAR) & 0xfffffff0)

#define __phys_to_bus(x)      ((x) + (IXP23XX_PCI_SDRAM_OFFSET - PHYS_OFFSET))
#define __bus_to_phys(x)      ((x) - (IXP23XX_PCI_SDRAM_OFFSET - PHYS_OFFSET))

#define __virt_to_bus(v)      __phys_to_bus(__virt_to_phys(v))
#define __bus_to_virt(b)      __phys_to_virt(__bus_to_phys(b))
#define __pfn_to_bus(p)       __phys_to_bus(__pfn_to_phys(p))
#define __bus_to_pfn(b)       __phys_to_pfn(__bus_to_phys(b))

#define arch_is_coherent()    1

#endif

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