1 /* $NetBSD: cache.c,v 1.2 2007/10/30 16:38:54 tsutsui Exp $ */ 2 3 /* 4 * Copyright 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <lib/libsa/stand.h> 39 #include <lib/libkern/libkern.h> 40 41 #include <mips/cpuregs.h> 42 #include <mips/cache_r4k.h> 43 44 #include "boot.h" 45 46 #define round_line(x) (((x) + (CACHELINESIZE - 1)) & ~(CACHELINESIZE - 1)) 47 #define trunc_line(x) ((x) & ~(CACHELINESIZE - 1)) 48 49 __asm(".set mips3"); 50 51 void 52 pdcache_inv(uint32_t va, u_int size) 53 { 54 uint32_t eva; 55 56 eva = round_line(va + size); 57 va = trunc_line(va); 58 59 while (va < eva) { 60 cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_INV); 61 va += CACHELINESIZE; 62 } 63 } 64 65 void 66 pdcache_wb(uint32_t va, u_int size) 67 { 68 uint32_t eva; 69 70 eva = round_line(va + size); 71 va = trunc_line(va); 72 73 while (va < eva) { 74 cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_WB); 75 va += CACHELINESIZE; 76 } 77 } 78 79 void 80 pdcache_wbinv(uint32_t va, u_int size) 81 { 82 uint32_t eva; 83 84 eva = round_line(va + size); 85 va = trunc_line(va); 86 87 while (va < eva) { 88 cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_WB_INV); 89 va += CACHELINESIZE; 90 } 91 } 92