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