/* * linux/arch/sh/kernel/io.c * * Copyright (C) 2000  Stuart Menefy * * Provide real functions which expand to whatever the header file defined. * Also definitions of machine independent IO functions. */#include <asm/io.h>#include <linux/module.h>/* * Copy data from IO memory space to "real" memory space. * This needs to be optimized. */void  memcpy_fromio(void * to, unsigned long from, unsigned long count){	char *p = to;        while (count) {                count--;                *p = readb(from);                p++;                from++;        }} /* * Copy data from "real" memory space to IO memory space. * This needs to be optimized. */void  memcpy_toio(unsigned long to, const void * from, unsigned long count){	const char *p = from;        while (count) {                count--;                writeb(*p, to);                p++;                to++;        }} /* * "memset" on IO memory space. * This needs to be optimized. */void  memset_io(unsigned long dst, int c, unsigned long count){        while (count) {                count--;                writeb(c, dst);                dst++;        }}EXPORT_SYMBOL(memcpy_fromio);EXPORT_SYMBOL(memcpy_toio);EXPORT_SYMBOL(memset_io);