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 #include <asm/hardware.h>
  18
  19 #define IO_SPACE_LIMIT 0xffff
  20
  21 /*
  22  * Translation of various region addresses to virtual addresses
  23  */
  24 #define __io(a)                 ((void __iomem *)(PCIO_BASE + (a)))
  25 #if 1
  26 #define __mem_pci(a)            (a)
  27 #define __mem_isa(a)            ((a) + PCIMEM_BASE)
  28 #else
  29
  30 static inline void __iomem *___mem_pci(void __iomem *p)
  31 {
  32         unsigned long a = (unsigned long)p;
  33         BUG_ON(a <= 0xc0000000 || a >= 0xe0000000);
  34         return p;
  35 }
  36
  37 static inline void __iomem *___mem_isa(void __iomem *p)
  38 {
  39         unsigned long a = (unsigned long)p;
  40         BUG_ON(a >= 16*1048576);
  41         return p + PCIMEM_BASE;
  42 }
  43 #define __mem_pci(a)            ___mem_pci(a)
  44 #define __mem_isa(a)            ___mem_isa(a)
  45 #endif
  46
  47 #endif