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

   1 /*
   2  * linux/include/asm-arm/arch-shark/io.h
   3  *
   4  * by Alexander Schulz
   5  *
   6  * derived from:
   7  * linux/include/asm-arm/arch-ebsa110/io.h
   8  * Copyright (C) 1997,1998 Russell King
   9  */
  10
  11 #ifndef __ASM_ARM_ARCH_IO_H
  12 #define __ASM_ARM_ARCH_IO_H
  13
  14 #define IO_SPACE_LIMIT 0xffffffff
  15
  16 /*
  17  * We use two different types of addressing - PC style addresses, and ARM
  18  * addresses.  PC style accesses the PC hardware with the normal PC IO
  19  * addresses, eg 0x3f8 for serial#1.  ARM addresses are 0x80000000+
  20  * and are translated to the start of IO.
  21  */
  22 #define __PORT_PCIO(x)  (!((x) & 0x80000000))
  23
  24 #define __io(a)                 ((void __iomem *)(PCIO_BASE + (a)))
  25
  26
  27 static inline unsigned int __ioaddr (unsigned int port)                 \
  28 {                                                                               \
  29         if (__PORT_PCIO(port))                                                  \
  30                 return (unsigned int)(PCIO_BASE + (port));                      \
  31         else                                                                    \
  32                 return (unsigned int)(IO_BASE + (port));                        \
  33 }
  34
  35 #define __mem_pci(addr) (addr)
  36
  37 /*
  38  * Translated address IO functions
  39  *
  40  * IO address has already been translated to a virtual address
  41  */
  42 #define outb_t(v,p)                                                             \
  43         (*(volatile unsigned char *)(p) = (v))
  44
  45 #define inb_t(p)                                                                \
  46         (*(volatile unsigned char *)(p))
  47
  48 #define outl_t(v,p)                                                             \
  49         (*(volatile unsigned long *)(p) = (v))
  50
  51 #define inl_t(p)                                                                \
  52         (*(volatile unsigned long *)(p))
  53
  54 #endif