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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 #include <sys/machsystm.h> 27 #include <sys/cpu_module.h> 28 #include <sys/dtrace.h> 29 #include <sys/cpu_sgnblk_defs.h> 30 #include <sys/mach_descrip.h> 31 #include <sys/ldoms.h> 32 #include <sys/hypervisor_api.h> 33 #include <sys/soft_state.h> 34 #include <sys/mpo.h> 35 36 /* 37 * Useful for disabling MP bring-up for an MP capable kernel 38 * (a kernel that was built with MP defined) 39 */ 40 int use_mp = 1; /* set to come up mp */ 41 42 /* 43 * Init CPU info - get CPU type info for processor_info system call. 44 */ 45 void 46 init_cpu_info(struct cpu *cp) 47 { 48 processor_info_t *pi = &cp->cpu_type_info; 49 int cpuid = cp->cpu_id; 50 struct cpu_node *cpunode = &cpunodes[cpuid]; 51 52 cp->cpu_fpowner = NULL; /* not used for V9 */ 53 54 /* 55 * Get clock-frequency property from cpunodes[] for the CPU. 56 */ 57 pi->pi_clock = (cpunode->clock_freq + 500000) / 1000000; 58 59 /* 60 * Current frequency in Hz. 61 */ 62 cp->cpu_curr_clock = cpunode->clock_freq; 63 64 /* 65 * Supported frequencies. 66 */ 67 cpu_set_supp_freqs(cp, NULL); 68 69 (void) strcpy(pi->pi_processor_type, "sparcv9"); 70 (void) strcpy(pi->pi_fputypes, "sparcv9"); 71 72 /* 73 * StarFire requires the signature block stuff setup here 74 */ 75 CPU_SGN_MAPIN(cpuid); 76 77 /* 78 * cpu0 is always initialized at boot time, but it can be initialized 79 * again if it is dynamically removed and then re-added. We check if 80 * we are booting by verifying cpu_list. During boot, cpu0 is already 81 * in cpu_list when this function is called. When a cpu is dynamically 82 * added (after the boot) then it is added to cpu_list after this 83 * function is called. 84 */ 85 if (cpuid == cpu0.cpu_id && ncpus == 1 && cpu_list[0].cpu_id == cpuid) { 86 /* 87 * cpu0 starts out running. Other cpus are 88 * still in OBP land and we will leave them 89 * alone for now. 90 */ 91 CPU_SIGNATURE(OS_SIG, SIGST_RUN, SIGSUBST_NULL, cpuid); 92 /* 93 * On first cpu setup, tell hv we are booting 94 */ 95 mach_set_soft_state(SIS_TRANSITION, 96 &SOLARIS_SOFT_STATE_BOOT_MSG); 97 #ifdef lint 98 cpuid = cpuid; 99 #endif /* lint */ 100 } 101 } 102 103 /* 104 * Routine used to cleanup a CPU that has been powered off. This will 105 * destroy all per-cpu information related to this cpu. 106 */ 107 int 108 mp_cpu_unconfigure(int cpuid) 109 { 110 int retval; 111 extern void empty_cpu(int); 112 extern int cleanup_cpu_common(int); 113 114 ASSERT(MUTEX_HELD(&cpu_lock)); 115 116 retval = cleanup_cpu_common(cpuid); 117 118 empty_cpu(cpuid); 119 120 mpo_cpu_remove(cpuid); 121 122 return (retval); 123 } 124 125 struct mp_find_cpu_arg { 126 int cpuid; /* set by mp_cpu_configure() */ 127 dev_info_t *dip; /* set by mp_find_cpu() */ 128 }; 129 130 int 131 mp_find_cpu(dev_info_t *dip, void *arg) 132 { 133 struct mp_find_cpu_arg *target = (struct mp_find_cpu_arg *)arg; 134 char *type; 135 int rv = DDI_WALK_CONTINUE; 136 int cpuid; 137 138 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, 139 DDI_PROP_DONTPASS, "device_type", &type)) 140 return (DDI_WALK_CONTINUE); 141 142 if (strcmp(type, "cpu") != 0) 143 goto out; 144 145 cpuid = ddi_prop_get_int(DDI_DEV_T_ANY, dip, 146 DDI_PROP_DONTPASS, "reg", -1); 147 148 if (cpuid == -1) { 149 cmn_err(CE_PANIC, "reg prop not found in cpu node"); 150 } 151 152 cpuid = PROM_CFGHDL_TO_CPUID(cpuid); 153 154 if (cpuid != target->cpuid) 155 goto out; 156 157 /* Found it */ 158 rv = DDI_WALK_TERMINATE; 159 target->dip = dip; 160 161 out: 162 ddi_prop_free(type); 163 return (rv); 164 } 165 166 /* 167 * Routine used to setup a newly inserted CPU in preparation for starting 168 * it running code. 169 */ 170 int 171 mp_cpu_configure(int cpuid) 172 { 173 md_t *mdp; 174 mde_cookie_t rootnode, cpunode = MDE_INVAL_ELEM_COOKIE; 175 int listsz, i; 176 mde_cookie_t *listp = NULL; 177 int num_nodes; 178 uint64_t cpuid_prop; 179 cpu_t *cpu; 180 processorid_t id; 181 182 ASSERT(MUTEX_HELD(&cpu_lock)); 183 184 if ((mdp = md_get_handle()) == NULL) 185 return (ENODEV); 186 187 rootnode = md_root_node(mdp); 188 189 ASSERT(rootnode != MDE_INVAL_ELEM_COOKIE); 190 191 num_nodes = md_node_count(mdp); 192 193 ASSERT(num_nodes > 0); 194 195 listsz = num_nodes * sizeof (mde_cookie_t); 196 listp = kmem_zalloc(listsz, KM_SLEEP); 197 198 num_nodes = md_scan_dag(mdp, rootnode, md_find_name(mdp, "cpu"), 199 md_find_name(mdp, "fwd"), listp); 200 201 if (num_nodes < 0) 202 return (ENODEV); 203 204 for (i = 0; i < num_nodes; i++) { 205 if (md_get_prop_val(mdp, listp[i], "id", &cpuid_prop)) 206 break; 207 if (cpuid_prop == (uint64_t)cpuid) { 208 cpunode = listp[i]; 209 break; 210 } 211 } 212 213 if (cpunode == MDE_INVAL_ELEM_COOKIE) 214 return (ENODEV); 215 216 kmem_free(listp, listsz); 217 218 mpo_cpu_add(mdp, cpuid); 219 220 /* 221 * Note: uses cpu_lock to protect cpunodes 222 * which will be modified inside of fill_cpu and 223 * setup_exec_unit_mappings. 224 */ 225 fill_cpu(mdp, cpunode); 226 227 /* 228 * Adding a CPU may cause the execution unit sharing 229 * relationships to change. Update the mappings in 230 * the cpunode structures. 231 */ 232 setup_chip_mappings(mdp); 233 setup_exec_unit_mappings(mdp); 234 235 /* propagate the updated mappings to the CPU structures */ 236 for (id = 0; id < NCPU; id++) { 237 if ((cpu = cpu_get(id)) == NULL) 238 continue; 239 240 cpu_map_exec_units(cpu); 241 } 242 243 (void) md_fini_handle(mdp); 244 245 if ((i = setup_cpu_common(cpuid)) != 0) { 246 (void) cleanup_cpu_common(cpuid); 247 return (i); 248 } 249 250 return (0); 251 } 252 253 /* 254 * Platform-specific actions to be taken when all cpus are running 255 * in the OS. 256 */ 257 void 258 cpu_mp_init(void) 259 { 260 extern void recalc_xc_timeouts(); 261 extern int cif_cpu_mp_ready; 262 263 /* N.B. This must happen after xc_init() has run. */ 264 recalc_xc_timeouts(); 265 266 if (!domaining_enabled()) 267 return; 268 269 cif_cpu_mp_ready = 1; 270 } 271 272 void 273 populate_idstr(struct cpu *cp) 274 { 275 char buf[CPU_IDSTRLEN]; 276 struct cpu_node *cpunode; 277 processor_info_t *pi; 278 279 cpunode = &cpunodes[cp->cpu_id]; 280 pi = &cp->cpu_type_info; 281 if (cp->cpu_m.cpu_chip == CPU_CHIPID_INVALID) { 282 (void) snprintf(buf, sizeof (buf), 283 "%s (cpuid %d, clock %d MHz)", 284 cpunode->name, cpunode->cpuid, pi->pi_clock); 285 } else { 286 (void) snprintf(buf, sizeof (buf), 287 "%s (chipid %d, clock %d MHz)", 288 cpunode->name, cp->cpu_m.cpu_chip, pi->pi_clock); 289 } 290 291 cp->cpu_idstr = kmem_alloc(strlen(buf) + 1, KM_SLEEP); 292 (void) strcpy(cp->cpu_idstr, buf); 293 294 cp->cpu_brandstr = kmem_alloc(strlen(cpunode->name) + 1, KM_SLEEP); 295 (void) strcpy(cp->cpu_brandstr, cpunode->name); 296 297 cmn_err(CE_CONT, "?cpu%d: %s\n", cp->cpu_id, cp->cpu_idstr); 298 } 299