include/asm-arm/arch-ebsa285/io.h

   1 /*
   2  *  linux/include/asm-arm/arch-ebsa285/io.h
   3  *
   4  *  Copyright (C) 1997-1999 Russell King
   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 version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  *  Modifications:
  11  *   06-12-1997 RMK     Created.
  12  *   07-04-1999 RMK     Major cleanup
  13  */
  14 #ifndef __ASM_ARM_ARCH_IO_H
  15 #define __ASM_ARM_ARCH_IO_H
  16
  17 #define IO_SPACE_LIMIT 0xffff
  18
  19 /*
  20  * Translation of various region addresses to virtual addresses
  21  */
  22 #define __io(a)                 ((void __iomem *)(PCIO_BASE + (a)))
  23 #if 1
  24 #define __mem_pci(a)            (a)
  25 #define __mem_isa(a)            ((a) + PCIMEM_BASE)
  26 #else
  27
  28 static inline void __iomem *___mem_pci(void __iomem *p)
  29 {
  30         unsigned long a = (unsigned long)p;
  31         BUG_ON(a <= 0xc0000000 || a >= 0xe0000000);
  32         return p;
  33 }
  34
  35 static inline void __iomem *___mem_isa(void __iomem *p)
  36 {
  37         unsigned long a = (unsigned long)p;
  38         BUG_ON(a >= 16*1048576);
  39         return p + PCIMEM_BASE;
  40 }
  41 #define __mem_pci(a)            ___mem_pci(a)
  42 #define __mem_isa(a)            ___mem_isa(a)
  43 #endif
  44
  45 #endif