release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-ixp2000/include/mach/memory.h

   1 /*
   2  * arch/arm/mach-ixp2000/include/mach/memory.h
   3  *
   4  * Copyright (c) 2002 Intel Corp.
   5  * Copyright (c) 2003-2004 MontaVista Software, Inc.
   6  *
   7  *  This program is free software; you can redistribute  it and/or modify it
   8  *  under  the terms of  the GNU General  Public License as published by the
   9  *  Free Software Foundation;  either version 2 of the  License, or (at your
  10  *  option) any later version.
  11  */
  12
  13 #ifndef __ASM_ARCH_MEMORY_H
  14 #define __ASM_ARCH_MEMORY_H
  15
  16 #define PHYS_OFFSET     UL(0x00000000)
  17
  18 #include <mach/ixp2000-regs.h>
  19
  20 #define IXP2000_PCI_SDRAM_OFFSET        (*IXP2000_PCI_SDRAM_BAR & 0xfffffff0)
  21
  22 #define __phys_to_bus(x)        ((x) + (IXP2000_PCI_SDRAM_OFFSET - PHYS_OFFSET))
  23 #define __bus_to_phys(x)        ((x) - (IXP2000_PCI_SDRAM_OFFSET - PHYS_OFFSET))
  24
  25 #define __virt_to_bus(v)        __phys_to_bus(__virt_to_phys(v))
  26 #define __bus_to_virt(b)        __phys_to_virt(__bus_to_phys(b))
  27 #define __pfn_to_bus(p)         __phys_to_bus(__pfn_to_phys(p))
  28 #define __bus_to_pfn(b)         __phys_to_pfn(__bus_to_phys(b))
  29
  30 #endif