arch/x86_64/lib/io.c

   1 #include <linux/string.h>
   2 #include <asm/io.h>
   3 #include <linux/module.h>
   4
   5 void __memcpy_toio(unsigned long dst,const void*src,unsigned len)
   6 {
   7         __inline_memcpy((void *) dst,src,len);
   8 }
   9 EXPORT_SYMBOL(__memcpy_toio);
  10
  11 void __memcpy_fromio(void *dst,unsigned long src,unsigned len)
  12 {
  13         __inline_memcpy(dst,(const void *) src,len);
  14 }
  15 EXPORT_SYMBOL(__memcpy_fromio);
  16
  17 void 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 }
  23 EXPORT_SYMBOL(memset_io);