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

   1 /*
   2  *  arch/arm/mach-integrator/include/mach/memory.h
   3  *
   4  *  Copyright (C) 1999 ARM Limited
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #ifndef __ASM_ARCH_MEMORY_H
  21 #define __ASM_ARCH_MEMORY_H
  22
  23 /*
  24  * Physical DRAM offset.
  25  */
  26 #define PLAT_PHYS_OFFSET        UL(0x00000000)
  27
  28 #define BUS_OFFSET      UL(0x80000000)
  29 #define __virt_to_bus(x)        ((x) - PAGE_OFFSET + BUS_OFFSET)
  30 #define __bus_to_virt(x)        ((x) - BUS_OFFSET + PAGE_OFFSET)
  31 #define __pfn_to_bus(x)         (__pfn_to_phys(x) + (BUS_OFFSET - PHYS_OFFSET))
  32 #define __bus_to_pfn(x)         __phys_to_pfn((x) - (BUS_OFFSET - PHYS_OFFSET))
  33
  34 #endif