1 /* $NetBSD: cpu.c,v 1.12 2002/10/02 15:52:34 thorpej 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 CFATTACH_DECL(cpu, sizeof(struct device), 56 cpu_match, cpu_attach, NULL, NULL); 57 58 static void 59 sgimips_find_l2cache(struct arcbios_component *comp, 60 struct arcbios_treewalk_context *atc) 61 { 62 struct device *self = atc->atc_cookie; 63 64 if (comp->Class != COMPONENT_CLASS_CacheClass) 65 return; 66 67 switch (comp->Type) { 68 case COMPONENT_TYPE_SecondaryICache: 69 panic("%s: split L2 cache", self->dv_xname); 70 case COMPONENT_TYPE_SecondaryDCache: 71 case COMPONENT_TYPE_SecondaryCache: 72 mips_sdcache_size = COMPONENT_KEY_Cache_CacheSize(comp->Key); 73 mips_sdcache_line_size = 74 COMPONENT_KEY_Cache_LineSize(comp->Key); 75 /* XXX */ 76 mips_sdcache_ways = 1; 77 break; 78 } 79 } 80 81 static int 82 cpu_match(parent, match, aux) 83 struct device *parent; 84 struct cfdata *match; 85 void *aux; 86 { 87 return 1; 88 } 89 90 static void 91 cpu_attach(parent, self, aux) 92 struct device *parent; 93 struct device *self; 94 void *aux; 95 { 96 /* 97 * Walk the ARCBIOS device tree to find the L2 cache. 98 * 99 * XXX We should be walking the tree to attach the CPUs, 100 * XXX etc, but we don't currently do that. 101 */ 102 arcbios_tree_walk(sgimips_find_l2cache, self); 103 104 printf(": "); 105 cpu_identify(); 106 107 #ifdef IP22 108 if (mach_type == MACH_SGI_IP22) { /* XXX Indy */ 109 extern void ip22_cache_init(struct device *); 110 ip22_cache_init(self); 111 } 112 #endif 113 } 114