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