release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mn10300/kernel/io.c

   1 /* MN10300 Misaligned multibyte-word I/O
   2  *
   3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11 #include <linux/module.h>
  12 #include <linux/string.h>
  13 #include <linux/kernel.h>
  14 #include <asm/io.h>
  15
  16 /*
  17  * output data from a potentially misaligned buffer
  18  */
  19 void __outsl(unsigned long addr, const void *buffer, int count)
  20 {
  21         const unsigned char *buf = buffer;
  22         unsigned long val;
  23
  24         while (count--) {
  25                 memcpy(&val, buf, 4);
  26                 outl(val, addr);
  27                 buf += 4;
  28         }
  29 }
  30 EXPORT_SYMBOL(__outsl);