/arch/x86_64/lib/io.c

https://bitbucket.org/evzijst/gittest · C · 23 lines · 18 code · 3 blank · 2 comment · 0 complexity · e82acb945b2eb44f260ef8a0b54eea4d MD5 · raw file

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