release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-ebsa110/include/mach/io.h

   1 /*
   2  *  arch/arm/mach-ebsa110/include/mach/io.h
   3  *
   4  *  Copyright (C) 1997,1998 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-Dec-1997 RMK     Created.
  12  */
  13 #ifndef __ASM_ARM_ARCH_IO_H
  14 #define __ASM_ARM_ARCH_IO_H
  15
  16 #define IO_SPACE_LIMIT 0xffff
  17
  18 u8 __inb8(unsigned int port);
  19 void __outb8(u8  val, unsigned int port);
  20
  21 u8 __inb16(unsigned int port);
  22 void __outb16(u8  val, unsigned int port);
  23
  24 u16 __inw(unsigned int port);
  25 void __outw(u16 val, unsigned int port);
  26
  27 u32 __inl(unsigned int port);
  28 void __outl(u32 val, unsigned int port);
  29
  30 u8  __readb(const volatile void __iomem *addr);
  31 u16 __readw(const volatile void __iomem *addr);
  32 u32 __readl(const volatile void __iomem *addr);
  33
  34 void __writeb(u8  val, void __iomem *addr);
  35 void __writew(u16 val, void __iomem *addr);
  36 void __writel(u32 val, void __iomem *addr);
  37
  38 /*
  39  * Argh, someone forgot the IOCS16 line.  We therefore have to handle
  40  * the byte stearing by selecting the correct byte IO functions here.
  41  */
  42 #ifdef ISA_SIXTEEN_BIT_PERIPHERAL
  43 #define inb(p)                  __inb16(p)
  44 #define outb(v,p)               __outb16(v,p)
  45 #else
  46 #define inb(p)                  __inb8(p)
  47 #define outb(v,p)               __outb8(v,p)
  48 #endif
  49
  50 #define inw(p)                  __inw(p)
  51 #define outw(v,p)               __outw(v,p)
  52
  53 #define inl(p)                  __inl(p)
  54 #define outl(v,p)               __outl(v,p)
  55
  56 #define readb(b)                __readb(b)
  57 #define readw(b)                __readw(b)
  58 #define readl(b)                __readl(b)
  59 #define readb_relaxed(addr)     readb(addr)
  60 #define readw_relaxed(addr)     readw(addr)
  61 #define readl_relaxed(addr)     readl(addr)
  62
  63 #define writeb(v,b)             __writeb(v,b)
  64 #define writew(v,b)             __writew(v,b)
  65 #define writel(v,b)             __writel(v,b)
  66
  67 static inline void __iomem *__arch_ioremap(unsigned long cookie, size_t size,
  68                                            unsigned int flags)
  69 {
  70         return (void __iomem *)cookie;
  71 }
  72
  73 #define __arch_ioremap          __arch_ioremap
  74 #define __arch_iounmap(cookie)  do { } while (0)
  75
  76 extern void insb(unsigned int port, void *buf, int sz);
  77 extern void insw(unsigned int port, void *buf, int sz);
  78 extern void insl(unsigned int port, void *buf, int sz);
  79
  80 extern void outsb(unsigned int port, const void *buf, int sz);
  81 extern void outsw(unsigned int port, const void *buf, int sz);
  82 extern void outsl(unsigned int port, const void *buf, int sz);
  83
  84 /* can't support writesb atm */
  85 extern void writesw(void __iomem *addr, const void *data, int wordlen);
  86 extern void writesl(void __iomem *addr, const void *data, int longlen);
  87
  88 /* can't support readsb atm */
  89 extern void readsw(const void __iomem *addr, void *data, int wordlen);
  90 extern void readsl(const void __iomem *addr, void *data, int longlen);
  91
  92 #endif