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cachectl.h revision 1.7.76.1 
      1 /*	$NetBSD: cachectl.h,v 1.7.76.1 2008/05/18 12:32:24 yamt 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 __P((void *addr, int nbytes, int cacheflags));
     41 int  cacheflush __P((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 __P((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_ */
     60