/arch/x86_64/lib/io.c

 1#include <linux/string.h>
 2#include <asm/io.h>
 3#include <linux/module.h>
 4
 5void __memcpy_toio(unsigned long dst,const void*src,unsigned len)
 6{
 7	__inline_memcpy((void *) dst,src,len);
 8}
 9EXPORT_SYMBOL(__memcpy_toio);
10
11void __memcpy_fromio(void *dst,unsigned long src,unsigned len)
12{
13	__inline_memcpy(dst,(const void *) src,len);
14}
15EXPORT_SYMBOL(__memcpy_fromio);
16
17void memset_io(volatile void __iomem *a, int b, size_t c)
18{
19	/* XXX: memset can mangle the IO patterns quite a bit.
20	   perhaps it would be better to use a dumb one */
21	memset((void *)a,b,c);
22}
23EXPORT_SYMBOL(memset_io);