1/* $NetBSD: cache_r3k.c,v 1.7 2016/07/11 16:15:36 matt 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 <sys/cdefs.h> 39__KERNEL_RCSID(0, "$NetBSD: cache_r3k.c,v 1.7 2016/07/11 16:15:36 matt Exp $"); 40 41#include <sys/param.h> 42 43#include <mips/cpuregs.h> 44#include <mips/cache.h> 45#include <mips/cache_r3k.h> 46 47/* 48 * Cache operations for R3000-style caches: 49 * 50 * - Direct-mapped 51 * - Write-through 52 * - Physically indexed, physically tagged 53 */ 54 55#define round_line(x) (((x) + 31) & ~31) 56#define trunc_line(x) ((x) & ~31) 57 58void 59r3k_icache_sync_all(void) 60{ 61 vaddr_t va = MIPS_PHYS_TO_KSEG0(0); 62 vaddr_t eva = va + mips_cache_info.mci_picache_size; 63 64 r3k_picache_do_inv(va, eva); 65} 66 67void 68r3k_icache_sync_range(register_t va, vsize_t size) 69{ 70 vaddr_t eva = round_line(va + size); 71 72 va = trunc_line(va); 73 74 if ((eva - va) >= mips_cache_info.mci_picache_size) { 75 r3k_icache_sync_all(); 76 return; 77 } 78 79 r3k_picache_do_inv(va, eva); 80} 81 82void 83r3k_pdcache_wbinv_all(void) 84{ 85 vaddr_t va = MIPS_PHYS_TO_KSEG0(0); 86 vaddr_t eva = va + mips_cache_info.mci_pdcache_size; 87 88 /* Cache is write-through. */ 89 90 r3k_pdcache_do_inv(va, eva); 91} 92 93void 94r3k_pdcache_inv_range(register_t va, vsize_t size) 95{ 96 vaddr_t eva = round_line(va + size); 97 98 va = trunc_line(va); 99 100 if ((eva - va) >= mips_cache_info.mci_pdcache_size) { 101 r3k_pdcache_wbinv_all(); 102 return; 103 } 104 105 r3k_pdcache_do_inv(va, eva); 106} 107 108void 109r3k_pdcache_wb_range(register_t va, vsize_t size) 110{ 111 112 /* Cache is write-though. */ 113} 114 115#undef round_line 116#undef trunc_line 117