1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/machsystm.h> 30 #include <sys/cpu_module.h> 31 #include <sys/dtrace.h> 32 #include <sys/cpu_sgnblk_defs.h> 33 34 /* 35 * Useful for disabling MP bring-up for an MP capable kernel 36 * (a kernel that was built with MP defined) 37 */ 38 int use_mp = 1; /* set to come up mp */ 39 40 /* 41 * Init CPU info - get CPU type info for processor_info system call. 42 */ 43 void 44 init_cpu_info(struct cpu *cp) 45 { 46 processor_info_t *pi = &cp->cpu_type_info; 47 int cpuid = cp->cpu_id; 48 struct cpu_node *cpunode = &cpunodes[cpuid]; 49 char buf[CPU_IDSTRLEN]; 50 51 cp->cpu_fpowner = NULL; /* not used for V9 */ 52 53 /* 54 * Get clock-frequency property from cpunodes[] for the CPU. 55 */ 56 pi->pi_clock = (cpunode->clock_freq + 500000) / 1000000; 57 58 (void) strcpy(pi->pi_processor_type, "sparcv9"); 59 (void) strcpy(pi->pi_fputypes, "sparcv9"); 60 61 (void) snprintf(buf, sizeof (buf), 62 "%s (portid %d impl 0x%x ver 0x%x clock %d MHz)", 63 cpunode->name, cpunode->portid, 64 cpunode->implementation, cpunode->version, pi->pi_clock); 65 66 cp->cpu_idstr = kmem_alloc(strlen(buf) + 1, KM_SLEEP); 67 (void) strcpy(cp->cpu_idstr, buf); 68 69 cmn_err(CE_CONT, "?cpu%d: %s\n", cpuid, cp->cpu_idstr); 70 71 cp->cpu_brandstr = kmem_alloc(strlen(cpunode->name) + 1, KM_SLEEP); 72 (void) strcpy(cp->cpu_brandstr, cpunode->name); 73 74 /* 75 * StarFire requires the signature block stuff setup here 76 */ 77 CPU_SGN_MAPIN(cpuid); 78 if (cpuid == cpu0.cpu_id) { 79 /* 80 * cpu0 starts out running. Other cpus are 81 * still in OBP land and we will leave them 82 * alone for now. 83 */ 84 CPU_SIGNATURE(OS_SIG, SIGST_RUN, SIGSUBST_NULL, cpuid); 85 #ifdef lint 86 cpuid = cpuid; 87 #endif /* lint */ 88 } 89 } 90 91 /* 92 * Routine used to cleanup a CPU that has been powered off. This will 93 * destroy all per-cpu information related to this cpu. 94 */ 95 int 96 mp_cpu_unconfigure(int cpuid) 97 { 98 int retval; 99 void empty_cpu(int); 100 extern int cleanup_cpu_common(int); 101 102 ASSERT(MUTEX_HELD(&cpu_lock)); 103 104 retval = cleanup_cpu_common(cpuid); 105 106 empty_cpu(cpuid); 107 108 return (retval); 109 } 110 111 struct mp_find_cpu_arg { 112 int cpuid; /* set by mp_cpu_configure() */ 113 dev_info_t *dip; /* set by mp_find_cpu() */ 114 }; 115 116 int 117 mp_find_cpu(dev_info_t *dip, void *arg) 118 { 119 extern int get_portid_ddi(dev_info_t *, dev_info_t **); 120 struct mp_find_cpu_arg *target = (struct mp_find_cpu_arg *)arg; 121 char *type; 122 int rv = DDI_WALK_CONTINUE; 123 int cpuid; 124 125 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 126 "device_type", &type)) 127 return (DDI_WALK_CONTINUE); 128 129 if (strcmp(type, "cpu") != 0) 130 goto out; 131 132 cpuid = ddi_prop_get_int(DDI_DEV_T_ANY, dip, 133 DDI_PROP_DONTPASS, "cpuid", -1); 134 135 if (cpuid == -1) 136 cpuid = get_portid_ddi(dip, NULL); 137 if (cpuid != target->cpuid) 138 goto out; 139 140 /* Found it */ 141 rv = DDI_WALK_TERMINATE; 142 target->dip = dip; 143 144 out: 145 ddi_prop_free(type); 146 return (rv); 147 } 148 149 /* 150 * Routine used to setup a newly inserted CPU in preparation for starting 151 * it running code. 152 */ 153 int 154 mp_cpu_configure(int cpuid) 155 { 156 extern void fill_cpu_ddi(dev_info_t *); 157 extern void setup_cpu_common(int); 158 struct mp_find_cpu_arg target; 159 160 ASSERT(MUTEX_HELD(&cpu_lock)); 161 162 target.dip = NULL; 163 target.cpuid = cpuid; 164 ddi_walk_devs(ddi_root_node(), mp_find_cpu, &target); 165 166 if (target.dip == NULL) 167 return (ENODEV); 168 169 /* 170 * Note: uses cpu_lock to protect cpunodes and ncpunodes 171 * which will be modified inside of fill_cpu_ddi(). 172 */ 173 fill_cpu_ddi(target.dip); 174 175 setup_cpu_common(cpuid); 176 177 return (0); 178 } 179