arch/x86/lib/io_64.c

   1 #include <linux/string.h>
   2 #include <linux/module.h>
   3 #include <asm/io.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         /*
  20          * TODO: memset can mangle the IO patterns quite a bit.
  21          * perhaps it would be better to use a dumb one:
  22          */
  23         memset((void *)a, b, c);
  24 }
  25 EXPORT_SYMBOL(memset_io);