arch/arm/mach-lpc32xx/include/mach/hardware.h

   1 /*
   2  * arch/arm/mach-lpc32xx/include/mach/hardware.h
   3  *
   4  * Copyright (c) 2005 MontaVista Software, Inc. <source@mvista.com>
   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
  17 #ifndef __ASM_ARCH_HARDWARE_H
  18 #define __ASM_ARCH_HARDWARE_H
  19
  20 /*
  21  * Start of virtual addresses for IO devices
  22  */
  23 #define IO_BASE         0xF0000000
  24
  25 /*
  26  * This macro relies on fact that for all HW i/o addresses bits 20-23 are 0
  27  */
  28 #define IO_ADDRESS(x)   (((((x) & 0xff000000) >> 4) | ((x) & 0xfffff)) |\
  29                          IO_BASE)
  30
  31 #define io_p2v(x)       ((void __iomem *) (unsigned long) IO_ADDRESS(x))
  32 #define io_v2p(x)       ((((x) & 0x0ff00000) << 4) | ((x) & 0x000fffff))
  33
  34 #endif