1 /* $NetBSD: cpu.c,v 1.9 2002/03/13 13:12:29 simonb Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Soren S. Jorvang 5 * Copyright (c) 2001 Jason R. Thorpe. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed for the 19 * NetBSD Project. See http://www.netbsd.org/ for 20 * information about NetBSD. 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include "opt_machtypes.h" 37 38 #include <sys/param.h> 39 #include <sys/device.h> 40 #include <sys/systm.h> 41 42 #include <mips/cache.h> 43 44 #include <machine/cpu.h> 45 #include <machine/locore.h> 46 #include <machine/autoconf.h> 47 #include <machine/machtype.h> 48 49 #include <dev/arcbios/arcbios.h> 50 #include <dev/arcbios/arcbiosvar.h> 51 52 static int cpu_match(struct device *, struct cfdata *, void *); 53 static void cpu_attach(struct device *, struct device *, void *); 54 55 struct cfattach cpu_ca = { 56 sizeof(struct device), cpu_match, cpu_attach 57 }; 58 59 static void 60 sgimips_find_l2cache(struct arcbios_component *comp, 61 struct arcbios_treewalk_context *atc) 62 { 63 struct device *self = atc->atc_cookie; 64 65 if (comp->Class != COMPONENT_CLASS_CacheClass) 66 return; 67 68 switch (comp->Type) { 69 case COMPONENT_TYPE_SecondaryICache: 70 panic("%s: split L2 cache", self->dv_xname); 71 case COMPONENT_TYPE_SecondaryDCache: 72 case COMPONENT_TYPE_SecondaryCache: 73 mips_sdcache_size = COMPONENT_KEY_Cache_CacheSize(comp->Key); 74 mips_sdcache_line_size = 75 COMPONENT_KEY_Cache_LineSize(comp->Key); 76 /* XXX */ 77 mips_sdcache_ways = 1; 78 break; 79 } 80 } 81 82 static int 83 cpu_match(parent, match, aux) 84 struct device *parent; 85 struct cfdata *match; 86 void *aux; 87 { 88 return 1; 89 } 90 91 static void 92 cpu_attach(parent, self, aux) 93 struct device *parent; 94 struct device *self; 95 void *aux; 96 { 97 /* 98 * Walk the ARCBIOS device tree to find the L2 cache. 99 * 100 * XXX We should be walking the tree to attach the CPUs, 101 * XXX etc, but we don't currently do that. 102 */ 103 arcbios_tree_walk(sgimips_find_l2cache, self); 104 105 printf(": "); 106 cpu_identify(); 107 108 #ifdef IP22 109 if (mach_type == MACH_SGI_IP22) { /* XXX Indy */ 110 extern void ip22_cache_init(struct device *); 111 ip22_cache_init(self); 112 } 113 #endif 114 } 115