Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/sparc64/sparc64/cache.c
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1 /*- 2 * Copyright (c) 1996 3 * The President and Fellows of Harvard College. All rights reserved. 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by Harvard University. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by Aaron Brown and 27 * Harvard University. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 */ 44 /*- 45 * Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>. 46 * All rights reserved. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 61 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 62 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 63 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 64 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 65 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 66 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 * 68 * from: @(#)cache.c 8.2 (Berkeley) 10/30/93 69 * from: NetBSD: cache.c,v 1.5 2000/12/06 01:47:50 mrg Exp 70 * 71 * $FreeBSD: releng/6.0/sys/sparc64/sparc64/cache.c 139825 2005-01-07 02:29:27Z imp $ 72 */ 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 77 #include <dev/ofw/openfirm.h> 78 79 #include <machine/cache.h> 80 #include <machine/tlb.h> 81 #include <machine/ver.h> 82 83 struct cacheinfo cache; 84 85 cache_enable_t *cache_enable; 86 cache_flush_t *cache_flush; 87 dcache_page_inval_t *dcache_page_inval; 88 icache_page_inval_t *icache_page_inval; 89 90 #define OF_GET(h, n, v) OF_getprop((h), (n), &(v), sizeof(v)) 91 92 /* 93 * Fill in the cache parameters using the cpu node. 94 */ 95 void 96 cache_init(phandle_t node) 97 { 98 u_long set; 99 100 if (OF_GET(node, "icache-size", cache.ic_size) == -1 || 101 OF_GET(node, "icache-line-size", cache.ic_linesize) == -1 || 102 OF_GET(node, "icache-associativity", cache.ic_assoc) == -1 || 103 OF_GET(node, "dcache-size", cache.dc_size) == -1 || 104 OF_GET(node, "dcache-line-size", cache.dc_linesize) == -1 || 105 OF_GET(node, "dcache-associativity", cache.dc_assoc) == -1 || 106 OF_GET(node, "ecache-size", cache.ec_size) == -1 || 107 OF_GET(node, "ecache-line-size", cache.ec_linesize) == -1 || 108 OF_GET(node, "ecache-associativity", cache.ec_assoc) == -1) 109 panic("cache_init: could not retrieve cache parameters"); 110 111 cache.ic_set = cache.ic_size / cache.ic_assoc; 112 cache.ic_l2set = ffs(cache.ic_set) - 1; 113 if ((cache.ic_set & ~(1UL << cache.ic_l2set)) != 0) 114 panic("cache_init: I$ set size not a power of 2"); 115 cache.dc_l2size = ffs(cache.dc_size) - 1; 116 if ((cache.dc_size & ~(1UL << cache.dc_l2size)) != 0) 117 panic("cache_init: D$ size not a power of 2"); 118 if (((cache.dc_size / cache.dc_assoc) / PAGE_SIZE) != DCACHE_COLORS) 119 panic("cache_init: too many D$ colors"); 120 set = cache.ec_size / cache.ec_assoc; 121 cache.ec_l2set = ffs(set) - 1; 122 if ((set & ~(1UL << cache.ec_l2set)) != 0) 123 panic("cache_init: E$ set size not a power of 2"); 124 125 if (cpu_impl >= CPU_IMPL_ULTRASPARCIII) { 126 cache_enable = cheetah_cache_enable; 127 cache_flush = cheetah_cache_flush; 128 dcache_page_inval = cheetah_dcache_page_inval; 129 icache_page_inval = cheetah_icache_page_inval; 130 tlb_flush_user = cheetah_tlb_flush_user; 131 } else { 132 cache_enable = spitfire_cache_enable; 133 cache_flush = spitfire_cache_flush; 134 dcache_page_inval = spitfire_dcache_page_inval; 135 icache_page_inval = spitfire_icache_page_inval; 136 tlb_flush_user = spitfire_tlb_flush_user; 137 } 138 }
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