arch/ia64/sn/kernel/sn2/cache.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2001-2003 Silicon Graphics, Inc. All rights reserved.
   7  *
   8  */
   9 #include <linux/module.h>
  10 #include <asm/pgalloc.h>
  11
  12 /**
  13  * sn_flush_all_caches - flush a range of address from all caches (incl. L4)
  14  * @flush_addr: identity mapped region 7 address to start flushing
  15  * @bytes: number of bytes to flush
  16  *
  17  * Flush a range of addresses from all caches including L4.
  18  * All addresses fully or partially contained within
  19  * @flush_addr to @flush_addr + @bytes are flushed
  20  * from the all caches.
  21  */
  22 void
  23 sn_flush_all_caches(long flush_addr, long bytes)
  24 {
  25         flush_icache_range(flush_addr, flush_addr+bytes);
  26         /*
  27          * The last call may have returned before the caches
  28          * were actually flushed, so we call it again to make
  29          * sure.
  30          */
  31         flush_icache_range(flush_addr, flush_addr+bytes);
  32         mb();
  33 }
  34 EXPORT_SYMBOL(sn_flush_all_caches);