LXR linux/arch/arm/mach-at91/include/mach/io.h

   1/*
   2 * arch/arm/mach-at91/include/mach/io.h
   3 *
   4 *  Copyright (C) 2003 SAN People
   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
  21#ifndef __ASM_ARCH_IO_H
  22#define __ASM_ARCH_IO_H
  23
  24#define IO_SPACE_LIMIT          0xFFFFFFFF
  25
  26#define __io(a)         __typesafe_io(a)
  27#define __mem_pci(a)    (a)
  28
  29
  30#ifndef __ASSEMBLY__
  31
  32static inline unsigned int at91_sys_read(unsigned int reg_offset)
  33{
  34        void __iomem *addr = (void __iomem *)AT91_VA_BASE_SYS;
  35
  36        return __raw_readl(addr + reg_offset);
  37}
  38
  39static inline void at91_sys_write(unsigned int reg_offset, unsigned long value)
  40{
  41        void __iomem *addr = (void __iomem *)AT91_VA_BASE_SYS;
  42
  43        __raw_writel(value, addr + reg_offset);
  44}
  45
  46#endif
  47
  48#endif
  49