/*
* linux/arch/sh/kernel/io.c
*
* Copyright (C) 2000 Stuart Menefy
* Copyright (C) 2005 Paul Mundt
* Provide real functions which expand to whatever the header file defined.
* Also definitions of machine independent IO functions.
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/module.h>
#include <asm/machvec.h>
#include <asm/io.h>
* Copy data from IO memory space to "real" memory space.
* This needs to be optimized.
void memcpy_fromio(void *to, const volatile void __iomem *from, unsigned long count)
{
unsigned char *p = to;
while (count) {
count--;
*p = readb(from);
p++;
from++;
}
EXPORT_SYMBOL(memcpy_fromio);
* Copy data from "real" memory space to IO memory space.
void memcpy_toio(volatile void __iomem *to, const void *from, unsigned long count)
const unsigned char *p = from;
writeb(*p, to);
to++;
EXPORT_SYMBOL(memcpy_toio);
* "memset" on IO memory space.
void memset_io(volatile void __iomem *dst, int c, unsigned long count)
writeb(c, dst);
dst++;
EXPORT_SYMBOL(memset_io);
void __iomem *ioport_map(unsigned long port, unsigned int nr)
void __iomem *ret;
ret = __ioport_map_trapped(port, nr);
if (ret)
return ret;
return __ioport_map(port, nr);
EXPORT_SYMBOL(ioport_map);
void ioport_unmap(void __iomem *addr)
sh_mv.mv_ioport_unmap(addr);
EXPORT_SYMBOL(ioport_unmap);