sys/arch/mips/include/cachectl.h

   1 /*      $NetBSD: cachectl.h,v 1.8 2008/04/28 20:23:28 martin Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jonathan Stone.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _MIPS_CACHECTL_H_
  33 #define _MIPS_CACHECTL_H_
  34
  35 #include <sys/cdefs.h>
  36
  37 /*
  38  * invalidate a range of addresses from the cache.
  39  */
  40 int  _cacheflush(void *addr, int nbytes, int cacheflags);
  41 int  cacheflush(void *addr, int nbytes, int cacheflags);
  42
  43                                         /* cacheflush() flags: */
  44 #define ICACHE  0x01                    /* invalidate I-cache */
  45 #define DCACHE  0x02                    /* writeback and invalidate D-cache */
  46 #define BCACHE  (ICACHE|DCACHE)         /* invalidate both caches, as above */
  47
  48
  49 int  cachectl(void *addr, int nbytes, int cacheop);
  50
  51                                         /* cachectl() cache operations: */
  52 #define CACHEABLE       0x00            /* make page(s) cacheable */
  53 #define UNCACHEABLE     0x01            /* make page(s) uncacheable */
  54
  55 #ifdef _KERNEL
  56 int mips_user_cachectl(struct proc *, vaddr_t, size_t, int);
  57 int mips_user_cacheflush(struct proc *, vaddr_t, size_t, int);
  58 #endif
  59 #endif /* _MIPS_CACHECTL_H_ */