1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1996 5 * The President and Fellows of Harvard College. All rights reserved. 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This software was developed by the Computer Systems Engineering group 10 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 11 * contributed to Berkeley. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by Aaron Brown and 24 * Harvard University. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * from: @(#)cache.h 8.1 (Berkeley) 6/11/93 42 * from: NetBSD: cache.h,v 1.3 2000/08/01 00:28:02 eeh Exp 43 * 44 * $FreeBSD$ 45 */ 46 47 #ifndef _MACHINE_CACHE_H_ 48 #define _MACHINE_CACHE_H_ 49 50 #define DCACHE_COLOR_BITS (1) 51 #define DCACHE_COLORS (1 << DCACHE_COLOR_BITS) 52 #define DCACHE_COLOR_MASK (DCACHE_COLORS - 1) 53 #define DCACHE_COLOR(va) (((va) >> PAGE_SHIFT) & DCACHE_COLOR_MASK) 54 #define DCACHE_OTHER_COLOR(color) \ 55 ((color) ^ DCACHE_COLOR_BITS) 56 57 #define DC_TAG_SHIFT 2 58 #define DC_VALID_SHIFT 0 59 60 #define DC_TAG_BITS 28 61 #define DC_VALID_BITS 2 62 63 #define DC_TAG_MASK ((1 << DC_TAG_BITS) - 1) 64 #define DC_VALID_MASK ((1 << DC_VALID_BITS) - 1) 65 66 #define IC_TAG_SHIFT 7 67 #define IC_VALID_SHIFT 36 68 69 #define IC_TAG_BITS 28 70 #define IC_VALID_BITS 1 71 72 #define IC_TAG_MASK ((1 << IC_TAG_BITS) - 1) 73 #define IC_VALID_MASK ((1 << IC_VALID_BITS) - 1) 74 75 #ifndef LOCORE 76 77 /* 78 * Cache control information 79 */ 80 struct cacheinfo { 81 u_int ic_size; /* instruction cache */ 82 u_int ic_assoc; 83 u_int ic_linesize; 84 u_int dc_size; /* data cache */ 85 u_int dc_assoc; 86 u_int dc_linesize; 87 u_int ec_size; /* external cache info */ 88 u_int ec_assoc; 89 u_int ec_linesize; 90 }; 91 92 #ifdef _KERNEL 93 94 extern u_int dcache_color_ignore; 95 96 struct pcpu; 97 98 typedef void cache_enable_t(u_int cpu_impl); 99 typedef void cache_flush_t(void); 100 typedef void dcache_page_inval_t(vm_paddr_t pa); 101 typedef void icache_page_inval_t(vm_paddr_t pa); 102 103 void cache_init(struct pcpu *pcpu); 104 105 cache_enable_t cheetah_cache_enable; 106 cache_flush_t cheetah_cache_flush; 107 dcache_page_inval_t cheetah_dcache_page_inval; 108 icache_page_inval_t cheetah_icache_page_inval; 109 110 cache_enable_t spitfire_cache_enable; 111 cache_flush_t spitfire_cache_flush; 112 dcache_page_inval_t spitfire_dcache_page_inval; 113 icache_page_inval_t spitfire_icache_page_inval; 114 115 cache_enable_t zeus_cache_enable; 116 cache_flush_t zeus_cache_flush; 117 dcache_page_inval_t zeus_dcache_page_inval; 118 icache_page_inval_t zeus_icache_page_inval; 119 120 extern cache_enable_t *cache_enable; 121 extern cache_flush_t *cache_flush; 122 extern dcache_page_inval_t *dcache_page_inval; 123 extern icache_page_inval_t *icache_page_inval; 124 125 #endif /* KERNEL */ 126 127 #endif /* !LOCORE */ 128 129 #endif /* !_MACHINE_CACHE_H_ */ 130