include/asm-mips/cachectl.h

   1 /*
   2  * cachectl.h -- defines for MIPS cache control system calls
   3  *
   4  * Copyright (C) 1994, 1995, 1996 by Ralf Baechle
   5  */
   6 #ifndef __ASM_MIPS_CACHECTL
   7 #define __ASM_MIPS_CACHECTL
   8
   9 /*
  10  * Options for cacheflush system call
  11  */
  12 #define ICACHE  (1<<0)          /* flush instruction cache        */
  13 #define DCACHE  (1<<1)          /* writeback and flush data cache */
  14 #define BCACHE  (ICACHE|DCACHE) /* flush both caches              */
  15
  16 /*
  17  * Caching modes for the cachectl(2) call
  18  *
  19  * cachctl(2) is currently not supported and returns ENOSYS.
  20  */
  21 #define CACHEABLE       0       /* make pages cacheable */
  22 #define UNCACHEABLE     1       /* make pages uncacheable */
  23
  24 #endif  /* __ASM_MIPS_CACHECTL */