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 #include <mach/hardware.h>
  25
  26 #define IO_SPACE_LIMIT          0xFFFFFFFF
  27
  28 #define __io(a)         __typesafe_io(a)
  29 #define __mem_pci(a)    (a)
  30
  31 #ifndef __ASSEMBLY__
  32
  33 #ifndef CONFIG_ARCH_AT91X40
  34 #define __arch_ioremap  at91_ioremap
  35 #define __arch_iounmap  at91_iounmap
  36 #endif
  37
  38 void __iomem *at91_ioremap(unsigned long phys, size_t size, unsigned int type);
  39 void at91_iounmap(volatile void __iomem *addr);
  40
  41 static inline unsigned int at91_sys_read(unsigned int reg_offset)
  42 {
  43         void __iomem *addr = (void __iomem *)AT91_VA_BASE_SYS;
  44
  45         return __raw_readl(addr + reg_offset);
  46 }
  47
  48 static inline void at91_sys_write(unsigned int reg_offset, unsigned long value)
  49 {
  50         void __iomem *addr = (void __iomem *)AT91_VA_BASE_SYS;
  51
  52         __raw_writel(value, addr + reg_offset);
  53 }
  54
  55 #endif
  56
  57 #endif