/* * 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);