arch/arm/mach-cns3xxx/include/mach/memory.h

   1 /*
   2  * Copyright 2003 ARM Limited
   3  * Copyright 2008 Cavium Networks
   4  *
   5  * This file is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License, Version 2, as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 #ifndef __MACH_MEMORY_H
  11 #define __MACH_MEMORY_H
  12
  13 /*
  14  * Physical DRAM offset.
  15  */
  16 #define PLAT_PHYS_OFFSET                UL(0x00000000)
  17
  18 #define __phys_to_bus(x)        ((x) + PHYS_OFFSET)
  19 #define __bus_to_phys(x)        ((x) - PHYS_OFFSET)
  20
  21 #define __virt_to_bus(v)        __phys_to_bus(__virt_to_phys(v))
  22 #define __bus_to_virt(b)        __phys_to_virt(__bus_to_phys(b))
  23 #define __pfn_to_bus(p)         __phys_to_bus(__pfn_to_phys(p))
  24 #define __bus_to_pfn(b)         __phys_to_pfn(__bus_to_phys(b))
  25
  26 #endif