LXR linux/arch/ia64/lib/io.c

   1#include <linux/module.h>
   2#include <linux/types.h>
   3
   4#include <asm/io.h>
   5
   6/*
   7 * Copy data from IO memory space to "real" memory space.
   8 * This needs to be optimized.
   9 */
  10void memcpy_fromio(void *to, const volatile void __iomem *from, long count)
  11{
  12        char *dst = to;
  13
  14        while (count) {
  15                count--;
  16                *dst++ = readb(from++);
  17        }
  18}
  19EXPORT_SYMBOL(memcpy_fromio);
  20
  21/*
  22 * Copy data from "real" memory space to IO memory space.
  23 * This needs to be optimized.
  24 */
  25void memcpy_toio(volatile void __iomem *to, const void *from, long count)
  26{
  27        const char *src = from;
  28
  29        while (count) {
  30                count--;
  31                writeb(*src++, to++);
  32        }
  33}
  34EXPORT_SYMBOL(memcpy_toio);
  35
  36/*
  37 * "memset" on IO memory space.
  38 * This needs to be optimized.
  39 */
  40void memset_io(volatile void __iomem *dst, int c, long count)
  41{
  42        unsigned char ch = (char)(c & 0xff);
  43
  44        while (count) {
  45                count--;
  46                writeb(ch, dst);
  47                dst++;
  48        }
  49}
  50EXPORT_SYMBOL(memset_io);
  51
  52#ifdef CONFIG_IA64_GENERIC
  53
  54#undef __ia64_inb
  55#undef __ia64_inw
  56#undef __ia64_inl
  57#undef __ia64_outb
  58#undef __ia64_outw
  59#undef __ia64_outl
  60#undef __ia64_readb
  61#undef __ia64_readw
  62#undef __ia64_readl
  63#undef __ia64_readq
  64#undef __ia64_readb_relaxed
  65#undef __ia64_readw_relaxed
  66#undef __ia64_readl_relaxed
  67#undef __ia64_readq_relaxed
  68#undef __ia64_writeb
  69#undef __ia64_writew
  70#undef __ia64_writel
  71#undef __ia64_writeq
  72#undef __ia64_mmiowb
  73
  74unsigned int
  75__ia64_inb (unsigned long port)
  76{
  77        return ___ia64_inb(port);
  78}
  79
  80unsigned int
  81__ia64_inw (unsigned long port)
  82{
  83        return ___ia64_inw(port);
  84}
  85
  86unsigned int
  87__ia64_inl (unsigned long port)
  88{
  89        return ___ia64_inl(port);
  90}
  91
  92void
  93__ia64_outb (unsigned char val, unsigned long port)
  94{
  95        ___ia64_outb(val, port);
  96}
  97
  98void
  99__ia64_outw (unsigned short val, unsigned long port)
 100{
 101        ___ia64_outw(val, port);
 102}
 103
 104void
 105__ia64_outl (unsigned int val, unsigned long port)
 106{
 107        ___ia64_outl(val, port);
 108}
 109
 110unsigned char
 111__ia64_readb (void __iomem *addr)
 112{
 113        return ___ia64_readb (addr);
 114}
 115
 116unsigned short
 117__ia64_readw (void __iomem *addr)
 118{
 119        return ___ia64_readw (addr);
 120}
 121
 122unsigned int
 123__ia64_readl (void __iomem *addr)
 124{
 125        return ___ia64_readl (addr);
 126}
 127
 128unsigned long
 129__ia64_readq (void __iomem *addr)
 130{
 131        return ___ia64_readq (addr);
 132}
 133
 134unsigned char
 135__ia64_readb_relaxed (void __iomem *addr)
 136{
 137        return ___ia64_readb (addr);
 138}
 139
 140unsigned short
 141__ia64_readw_relaxed (void __iomem *addr)
 142{
 143        return ___ia64_readw (addr);
 144}
 145
 146unsigned int
 147__ia64_readl_relaxed (void __iomem *addr)
 148{
 149        return ___ia64_readl (addr);
 150}
 151
 152unsigned long
 153__ia64_readq_relaxed (void __iomem *addr)
 154{
 155        return ___ia64_readq (addr);
 156}
 157
 158void
 159__ia64_mmiowb(void)
 160{
 161        ___ia64_mmiowb();
 162}
 163
 164#endif /* CONFIG_IA64_GENERIC */
 165