LXR linux/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
  18u8 __inb8(unsigned int port);
  19void __outb8(u8  val, unsigned int port);
  20
  21u8 __inb16(unsigned int port);
  22void __outb16(u8  val, unsigned int port);
  23
  24u16 __inw(unsigned int port);
  25void __outw(u16 val, unsigned int port);
  26
  27u32 __inl(unsigned int port);
  28void __outl(u32 val, unsigned int port);
  29
  30u8  __readb(const volatile void __iomem *addr);
  31u16 __readw(const volatile void __iomem *addr);
  32u32 __readl(const volatile void __iomem *addr);
  33
  34void __writeb(u8  val, void __iomem *addr);
  35void __writew(u16 val, void __iomem *addr);
  36void __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
  67static 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
  76extern void insb(unsigned int port, void *buf, int sz);
  77extern void insw(unsigned int port, void *buf, int sz);
  78extern void insl(unsigned int port, void *buf, int sz);
  79
  80extern void outsb(unsigned int port, const void *buf, int sz);
  81extern void outsw(unsigned int port, const void *buf, int sz);
  82extern void outsl(unsigned int port, const void *buf, int sz);
  83
  84/* can't support writesb atm */
  85extern void writesw(void __iomem *addr, const void *data, int wordlen);
  86extern void writesl(void __iomem *addr, const void *data, int longlen);
  87
  88/* can't support readsb atm */
  89extern void readsw(const void __iomem *addr, void *data, int wordlen);
  90extern void readsl(const void __iomem *addr, void *data, int longlen);
  91
  92#endif
  93