arch/arm/mach-tegra/include/mach/io.h

   1 /*
   2  * arch/arm/mach-tegra/include/mach/io.h
   3  *
   4  * Copyright (C) 2010 Google, Inc.
   5  *
   6  * Author:
   7  *      Colin Cross <ccross@google.com>
   8  *      Erik Gilling <konkers@google.com>
   9  *
  10  * This software is licensed under the terms of the GNU General Public
  11  * License version 2, as published by the Free Software Foundation, and
  12  * may be copied, distributed, and modified under those terms.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  */
  20
  21 #ifndef __MACH_TEGRA_IO_H
  22 #define __MACH_TEGRA_IO_H
  23
  24 #define IO_SPACE_LIMIT 0xffff
  25
  26 #ifndef __ASSEMBLER__
  27
  28 #ifdef CONFIG_TEGRA_PCI
  29 extern void __iomem *tegra_pcie_io_base;
  30
  31 static inline void __iomem *__io(unsigned long addr)
  32 {
  33         return tegra_pcie_io_base + (addr & IO_SPACE_LIMIT);
  34 }
  35 #else
  36 static inline void __iomem *__io(unsigned long addr)
  37 {
  38         return (void __iomem *)addr;
  39 }
  40 #endif
  41
  42 #define __io(a)         __io(a)
  43
  44 #endif
  45
  46 #endif