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 /* 64 * Current frequency in Hz. 65 */ 66 cp->cpu_curr_clock = cpunode->clock_freq; 67 68 /* 69 * Supported frequencies. 70 */ 71 cpu_set_supp_freqs(cp, NULL); 72 73 (void) strcpy(pi->pi_processor_type, "sparcv9"); 74 (void) strcpy(pi->pi_fputypes, "sparcv9"); 75 76 (void) snprintf(buf, sizeof (buf), 77 "%s (cpuid %d clock %d MHz)", 78 cpunode->name, cpunode->cpuid, pi->pi_clock); 79 80 cp->cpu_idstr = kmem_alloc(strlen(buf) + 1, KM_SLEEP); 81 (void) strcpy(cp->cpu_idstr, buf); 82 83 cmn_err(CE_CONT, "?cpu%d: %s\n", cpuid, cp->cpu_idstr); 84 85 cp->cpu_brandstr = kmem_alloc(strlen(cpunode->name) + 1, KM_SLEEP); 86 (void) strcpy(cp->cpu_brandstr, cpunode->name); 87 88 /* 89 * StarFire requires the signature block stuff setup here 90 */ 91 CPU_SGN_MAPIN(cpuid); 92 if (cpuid == cpu0.cpu_id) { 93 /* 94 * cpu0 starts out running. Other cpus are 95 * still in OBP land and we will leave them 96 * alone for now. 97 */ 98 CPU_SIGNATURE(OS_SIG, SIGST_RUN, SIGSUBST_NULL, cpuid); 99 /* 100 * On first cpu setup, tell hv we are booting 101 */ 102 mach_set_soft_state(SIS_TRANSITION, 103 &SOLARIS_SOFT_STATE_BOOT_MSG); 104 #ifdef lint 105 cpuid = cpuid; 106 #endif /* lint */ 107 } 108 } 109 110 /* 111 * Routine used to cleanup a CPU that has been powered off. This will 112 * destroy all per-cpu information related to this cpu. 113 */ 114 int 115 mp_cpu_unconfigure(int cpuid) 116 { 117 int retval; 118 extern void empty_cpu(int); 119 extern int cleanup_cpu_common(int); 120 121 ASSERT(MUTEX_HELD(&cpu_lock)); 122 123 retval = cleanup_cpu_common(cpuid); 124 125 empty_cpu(cpuid); 126 127 return (retval); 128 } 129 130 struct mp_find_cpu_arg { 131 int cpuid; /* set by mp_cpu_configure() */ 132 dev_info_t *dip; /* set by mp_find_cpu() */ 133 }; 134 135 int 136 mp_find_cpu(dev_info_t *dip, void *arg) 137 { 138 struct mp_find_cpu_arg *target = (struct mp_find_cpu_arg *)arg; 139 char *type; 140 int rv = DDI_WALK_CONTINUE; 141 int cpuid; 142 143 if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, 144 DDI_PROP_DONTPASS, "device_type", &type)) 145 return (DDI_WALK_CONTINUE); 146 147 if (strcmp(type, "cpu") != 0) 148 goto out; 149 150 cpuid = ddi_prop_get_int(DDI_DEV_T_ANY, dip, 151 DDI_PROP_DONTPASS, "reg", -1); 152 153 if (cpuid == -1) { 154 cmn_err(CE_PANIC, "reg prop not found in cpu node"); 155 } 156 157 cpuid = PROM_CFGHDL_TO_CPUID(cpuid); 158 159 if (cpuid != target->cpuid) 160 goto out; 161 162 /* Found it */ 163 rv = DDI_WALK_TERMINATE; 164 target->dip = dip; 165 166 out: 167 ddi_prop_free(type); 168 return (rv); 169 } 170 171 /* 172 * Routine used to setup a newly inserted CPU in preparation for starting 173 * it running code. 174 */ 175 int 176 mp_cpu_configure(int cpuid) 177 { 178 extern void fill_cpu(md_t *, mde_cookie_t); 179 extern int setup_cpu_common(int); 180 extern int cleanup_cpu_common(int); 181 extern void setup_exec_unit_mappings(md_t *); 182 183 md_t *mdp; 184 mde_cookie_t rootnode, cpunode = MDE_INVAL_ELEM_COOKIE; 185 int listsz, i; 186 mde_cookie_t *listp = NULL; 187 int num_nodes; 188 uint64_t cpuid_prop; 189 cpu_t *cpu; 190 processorid_t id; 191 192 ASSERT(MUTEX_HELD(&cpu_lock)); 193 194 if ((mdp = md_get_handle()) == NULL) 195 return (ENODEV); 196 197 rootnode = md_root_node(mdp); 198 199 ASSERT(rootnode != MDE_INVAL_ELEM_COOKIE); 200 201 num_nodes = md_node_count(mdp); 202 203 ASSERT(num_nodes > 0); 204 205 listsz = num_nodes * sizeof (mde_cookie_t); 206 listp = kmem_zalloc(listsz, KM_SLEEP); 207 208 num_nodes = md_scan_dag(mdp, rootnode, md_find_name(mdp, "cpu"), 209 md_find_name(mdp, "fwd"), listp); 210 211 if (num_nodes < 0) 212 return (ENODEV); 213 214 for (i = 0; i < num_nodes; i++) { 215 if (md_get_prop_val(mdp, listp[i], "id", &cpuid_prop)) 216 break; 217 if (cpuid_prop == (uint64_t)cpuid) { 218 cpunode = listp[i]; 219 break; 220 } 221 } 222 223 if (cpunode == MDE_INVAL_ELEM_COOKIE) 224 return (ENODEV); 225 226 kmem_free(listp, listsz); 227 228 /* 229 * Note: uses cpu_lock to protect cpunodes 230 * which will be modified inside of fill_cpu and 231 * setup_exec_unit_mappings. 232 */ 233 fill_cpu(mdp, cpunode); 234 235 /* 236 * Adding a CPU may cause the execution unit sharing 237 * relationships to change. Update the mappings in 238 * the cpunode structures. 239 */ 240 setup_exec_unit_mappings(mdp); 241 242 /* propagate the updated mappings to the CPU structures */ 243 for (id = 0; id < NCPU; id++) { 244 if ((cpu = cpu_get(id)) == NULL) 245 continue; 246 247 cpu_map_exec_units(cpu); 248 } 249 250 (void) md_fini_handle(mdp); 251 252 if ((i = setup_cpu_common(cpuid)) != 0) { 253 (void) cleanup_cpu_common(cpuid); 254 return (i); 255 } 256 257 return (0); 258 } 259 260 /* 261 * Platform-specific actions to be taken when all cpus are running 262 * in the OS. 263 */ 264 void 265 cpu_mp_init(void) 266 { 267 extern void recalc_xc_timeouts(); 268 extern int cif_cpu_mp_ready; 269 270 /* N.B. This must happen after xc_init() has run. */ 271 recalc_xc_timeouts(); 272 273 if (!domaining_enabled()) 274 return; 275 276 cif_cpu_mp_ready = 1; 277 } 278