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cacheops_20.h revision 1.7 
      1 /*	$NetBSD: cacheops_20.h,v 1.7 2005/12/24 20:07:15 perry 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 Leo Weppelman
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * Invalidate entire TLB.
     41  */
     42 static inline void __attribute__((__unused__))
     43 TBIA_20(void)
     44 {
     45 	__asm volatile (" pflusha");
     46 }
     47 
     48 /*
     49  * Invalidate any TLB entry for given VA (TB Invalidate Single)
     50  */
     51 static inline void __attribute__((__unused__))
     52 TBIS_20(vaddr_t	va)
     53 {
     54 
     55 	__asm volatile (" pflushs	#0,#0,%0@" : : "a" (va) );
     56 }
     57 
     58 /*
     59  * Invalidate supervisor side of TLB
     60  */
     61 static inline void __attribute__((__unused__))
     62 TBIAS_20(void)
     63 {
     64 	__asm volatile (" pflushs #4,#4");
     65 }
     66 
     67 /*
     68  * Invalidate user side of TLB
     69  */
     70 static inline void __attribute__((__unused__))
     71 TBIAU_20(void)
     72 {
     73 	__asm volatile (" pflushs #0,#4;");
     74 }
     75 
     76 /*
     77  * Invalidate instruction cache
     78  */
     79 static inline void __attribute__((__unused__))
     80 ICIA_20(void)
     81 {
     82 	__asm volatile (" movc %0,%%cacr;" : : "d" (IC_CLEAR));
     83 }
     84 
     85 static inline void __attribute__((__unused__))
     86 ICPA_20(void)
     87 {
     88 	__asm volatile (" movc %0,%%cacr;" : : "d" (IC_CLEAR));
     89 }
     90 
     91 /*
     92  * Invalidate data cache.
     93  * NOTE: we do not flush 68030/20 on-chip cache as there are no aliasing
     94  * problems with DC_WA.  The only cases we have to worry about are context
     95  * switch and TLB changes, both of which are handled "in-line" in resume
     96  * and TBI*.
     97  */
     98 #define	DCIA_20()
     99 #define	DCIS_20()
    100 #define	DCIU_20()
    101 #define	DCIAS_20(va)
    102 #define	DCFA_20()
    103 #define	DCPA_20()
    104 
    105 static inline void __attribute__((__unused__))
    106 PCIA_20(void)
    107 {
    108 	__asm volatile (" movc %0,%%cacr;" : : "d" (DC_CLEAR));
    109 }
    110