arch/mips/include/asm/cachectl.h

   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) 1994, 1995, 1996 by Ralf Baechle
   7  */
   8 #ifndef _ASM_CACHECTL
   9 #define _ASM_CACHECTL
  10
  11 /*
  12  * Options for cacheflush system call
  13  */
  14 #define ICACHE  (1<<0)          /* flush instruction cache        */
  15 #define DCACHE  (1<<1)          /* writeback and flush data cache */
  16 #define BCACHE  (ICACHE|DCACHE) /* flush both caches              */
  17
  18 /*
  19  * Caching modes for the cachectl(2) call
  20  *
  21  * cachectl(2) is currently not supported and returns ENOSYS.
  22  */
  23 #define CACHEABLE       0       /* make pages cacheable */
  24 #define UNCACHEABLE     1       /* make pages uncacheable */
  25
  26 #endif  /* _ASM_CACHECTL */