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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2007 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 #include <sys/mdesc.h> 34 #include <sys/mach_descrip.h> 35 #include <sys/ldoms.h> 36 #include <sys/hypervisor_api.h> 37 #include <sys/soft_state.h> 38 39 /* 40 * Useful for disabling MP bring-up for an MP capable kernel 41 * (a kernel that was built with MP defined) 42 */ 43 int use_mp = 1; /* set to come up mp */ 44 45 /* 46 * Init CPU info - get CPU type info for processor_info system call. 47 */ 48 void 49 init_cpu_info(struct cpu *cp) 50 { 51 processor_info_t *pi = &cp->cpu_type_info; 52 int cpuid = cp->cpu_id; 53 struct cpu_node *cpunode = &cpunodes[cpuid]; 54 char buf[CPU_IDSTRLEN]; 55 56 cp->cpu_fpowner = NULL; /* not used for V9 */ 57 58 /* 59 * Get clock-frequency property from cpunodes[] for the CPU. 60 */ 61 pi->pi_clock = (cpunode->clock_freq + 500000) / 1000000; 62 63 (void) strcpy(pi->pi_processor_type, "sparcv9"); 64 (void) strcpy(pi->pi_fputypes, "sparcv9"); 65 66 (void) snprintf(buf, sizeof (buf), 67 "%s (cpuid %d clock %d MHz)", 68 cpunode->name, cpunode->cpuid, pi->pi_clock); 69 70 cp->cpu_idstr = kmem_alloc(strlen(buf) + 1, KM_SLEEP); 71 (void) strcpy(cp->cpu_idstr, buf); 72 73 cmn_err(CE_CONT, "?cpu%d: %s\n", cpuid, cp->cpu_idstr); 74 75 cp->cpu_brandstr = kmem_alloc(strlen(cpunode->name) + 1, KM_SLEEP); 76 (void) strcpy(cp->cpu_brandstr, cpunode->name); 77 78 /* 79 * StarFire requires the signature block stuff setup here 80 */ 81 CPU_SGN_MAPIN(cpuid); 82 if (cpuid == cpu0.cpu_id) { 83 /* 84 * cpu0 starts out running. Other cpus are 85 * still in OBP land and we will leave them 86 * alone for now. 87 */ 88 CPU_SIGNATURE(OS_SIG, SIGST_RUN, SIGSUBST_NULL, cpuid); 89 /* 90 * On first cpu setup, tell hv we are booting 91 */ 92 mach_set_soft_state(SIS_TRANSITION, 93 &SOLARIS_SOFT_STATE_BOOT_MSG); 94 #ifdef lint 95 cpuid = cpuid; 96 #endif /* lint */ 97 } 98 } 99 100 /* 101 * Routine used to cleanup a CPU that has been powered off. This will 102 * destroy all per-cpu information related to this cpu. 103 */ 104 int 105 mp_cpu_unconfigure(int cpuid) 106 { 107 int retval; 108 extern void empty_cpu(int); 109 extern int cleanup_cpu_common(int); 110 111 ASSERT(MUTEX_HELD(&cpu_lock)); 112 113 retval = cleanup_cpu_common(cpuid); 114 115 empty_cpu(cpuid); 116 117 return (retval); 118 } 119 120 struct mp_find_cpu_arg { 121 int cpuid; /* set by mp_cpu_configure() */ 122 dev_info_t *dip; /* set by mp_find_cpu() */ 123 }; 124 125 int 126 mp_find_cpu(dev_info_t *dip, void *arg) 127 { 128 struct mp_find_cpu_arg *target = (struct mp_find_cpu_arg *)arg; 129 char *type; 130 int rv = DDI_WALK_CONTINUE; 131 int cpuid; 132 133 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, 134 DDI_PROP_DONTPASS, "device_type", &type)) 135 return (DDI_WALK_CONTINUE); 136 137 if (strcmp(type, "cpu") != 0) 138 goto out; 139 140 cpuid = ddi_prop_get_int(DDI_DEV_T_ANY, dip, 141 DDI_PROP_DONTPASS, "reg", -1); 142 143 if (cpuid == -1) { 144 cmn_err(CE_PANIC, "reg prop not found in cpu node"); 145 } 146 147 cpuid = PROM_CFGHDL_TO_CPUID(cpuid); 148 149 if (cpuid != target->cpuid) 150 goto out; 151 152 /* Found it */ 153 rv = DDI_WALK_TERMINATE; 154 target->dip = dip; 155 156 out: 157 ddi_prop_free(type); 158 return (rv); 159 } 160 161 /* 162 * Routine used to setup a newly inserted CPU in preparation for starting 163 * it running code. 164 */ 165 int 166 mp_cpu_configure(int cpuid) 167 { 168 extern void fill_cpu(md_t *, mde_cookie_t); 169 extern int setup_cpu_common(int); 170 extern int cleanup_cpu_common(int); 171 extern void setup_exec_unit_mappings(md_t *); 172 md_t *mdp; 173 mde_cookie_t rootnode, cpunode = MDE_INVAL_ELEM_COOKIE; 174 int listsz, i; 175 mde_cookie_t *listp = NULL; 176 int num_nodes; 177 uint64_t cpuid_prop; 178 179 180 ASSERT(MUTEX_HELD(&cpu_lock)); 181 182 if ((mdp = md_get_handle()) == NULL) 183 return (ENODEV); 184 185 rootnode = md_root_node(mdp); 186 187 ASSERT(rootnode != MDE_INVAL_ELEM_COOKIE); 188 189 num_nodes = md_node_count(mdp); 190 191 ASSERT(num_nodes > 0); 192 193 listsz = num_nodes * sizeof (mde_cookie_t); 194 listp = kmem_zalloc(listsz, KM_SLEEP); 195 196 num_nodes = md_scan_dag(mdp, rootnode, md_find_name(mdp, "cpu"), 197 md_find_name(mdp, "fwd"), listp); 198 199 if (num_nodes < 0) 200 return (ENODEV); 201 202 for (i = 0; i < num_nodes; i++) { 203 if (md_get_prop_val(mdp, listp[i], "id", &cpuid_prop)) 204 break; 205 if (cpuid_prop == (uint64_t)cpuid) { 206 cpunode = listp[i]; 207 break; 208 } 209 } 210 211 if (cpunode == MDE_INVAL_ELEM_COOKIE) 212 return (ENODEV); 213 214 kmem_free(listp, listsz); 215 216 /* 217 * Note: uses cpu_lock to protect cpunodes and ncpunodes 218 * which will be modified inside of fill_cpu and 219 * setup_exec_unit_mappings. 220 */ 221 fill_cpu(mdp, cpunode); 222 223 /* 224 * Remap all the cpunodes' execunit mappings. 225 */ 226 setup_exec_unit_mappings(mdp); 227 228 (void) md_fini_handle(mdp); 229 230 if ((i = setup_cpu_common(cpuid)) != 0) { 231 (void) cleanup_cpu_common(cpuid); 232 return (i); 233 } 234 return (0); 235 } 236 237 /* 238 * Platform-specific actions to be taken when all cpus are running 239 * in the OS. 240 */ 241 void 242 cpu_mp_init(void) 243 { 244 extern void recalc_xc_timeouts(); 245 extern int cif_cpu_mp_ready; 246 247 /* N.B. This must happen after xc_init() has run. */ 248 recalc_xc_timeouts(); 249 250 if (!(domaining_capabilities & DOMAINING_ENABLED)) 251 return; 252 253 cif_cpu_mp_ready = 1; 254 } 255