1 /* 2 * QMP commands related to machines and CPUs 3 * 4 * Copyright (C) 2014 Red Hat Inc 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2 or later. 7 * See the COPYING file in the top-level directory. 8 */ 9 10 #include "qemu/osdep.h" 11 #include "cpu.h" 12 #include "hw/boards.h" 13 #include "qapi/error.h" 14 #include "qapi/qapi-builtin-visit.h" 15 #include "qapi/qapi-commands-machine.h" 16 #include "qapi/qmp/qerror.h" 17 #include "qapi/qmp/qobject.h" 18 #include "qapi/qobject-input-visitor.h" 19 #include "qemu/main-loop.h" 20 #include "qom/qom-qobject.h" 21 #include "sysemu/hostmem.h" 22 #include "sysemu/hw_accel.h" 23 #include "sysemu/numa.h" 24 #include "sysemu/runstate.h" 25 #include "sysemu/sysemu.h" 26 27 CpuInfoList *qmp_query_cpus(Error **errp) 28 { 29 MachineState *ms = MACHINE(qdev_get_machine()); 30 MachineClass *mc = MACHINE_GET_CLASS(ms); 31 CpuInfoList *head = NULL, *cur_item = NULL; 32 CPUState *cpu; 33 34 CPU_FOREACH(cpu) { 35 CpuInfoList *info; 36 #if defined(TARGET_I386) 37 X86CPU *x86_cpu = X86_CPU(cpu); 38 CPUX86State *env = &x86_cpu->env; 39 #elif defined(TARGET_PPC) 40 PowerPCCPU *ppc_cpu = POWERPC_CPU(cpu); 41 CPUPPCState *env = &ppc_cpu->env; 42 #elif defined(TARGET_SPARC) 43 SPARCCPU *sparc_cpu = SPARC_CPU(cpu); 44 CPUSPARCState *env = &sparc_cpu->env; 45 #elif defined(TARGET_RISCV) 46 RISCVCPU *riscv_cpu = RISCV_CPU(cpu); 47 CPURISCVState *env = &riscv_cpu->env; 48 #elif defined(TARGET_MIPS) 49 MIPSCPU *mips_cpu = MIPS_CPU(cpu); 50 CPUMIPSState *env = &mips_cpu->env; 51 #elif defined(TARGET_TRICORE) 52 TriCoreCPU *tricore_cpu = TRICORE_CPU(cpu); 53 CPUTriCoreState *env = &tricore_cpu->env; 54 #elif defined(TARGET_S390X) 55 S390CPU *s390_cpu = S390_CPU(cpu); 56 CPUS390XState *env = &s390_cpu->env; 57 #endif 58 59 cpu_synchronize_state(cpu); 60 61 info = g_malloc0(sizeof(*info)); 62 info->value = g_malloc0(sizeof(*info->value)); 63 info->value->CPU = cpu->cpu_index; 64 info->value->current = (cpu == first_cpu); 65 info->value->halted = cpu->halted; 66 info->value->qom_path = object_get_canonical_path(OBJECT(cpu)); 67 info->value->thread_id = cpu->thread_id; 68 #if defined(TARGET_I386) 69 info->value->arch = CPU_INFO_ARCH_X86; 70 info->value->u.x86.pc = env->eip + env->segs[R_CS].base; 71 #elif defined(TARGET_PPC) 72 info->value->arch = CPU_INFO_ARCH_PPC; 73 info->value->u.ppc.nip = env->nip; 74 #elif defined(TARGET_SPARC) 75 info->value->arch = CPU_INFO_ARCH_SPARC; 76 info->value->u.q_sparc.pc = env->pc; 77 info->value->u.q_sparc.npc = env->npc; 78 #elif defined(TARGET_MIPS) 79 info->value->arch = CPU_INFO_ARCH_MIPS; 80 info->value->u.q_mips.PC = env->active_tc.PC; 81 #elif defined(TARGET_TRICORE) 82 info->value->arch = CPU_INFO_ARCH_TRICORE; 83 info->value->u.tricore.PC = env->PC; 84 #elif defined(TARGET_S390X) 85 info->value->arch = CPU_INFO_ARCH_S390; 86 info->value->u.s390.cpu_state = env->cpu_state; 87 #elif defined(TARGET_RISCV) 88 info->value->arch = CPU_INFO_ARCH_RISCV; 89 info->value->u.riscv.pc = env->pc; 90 #else 91 info->value->arch = CPU_INFO_ARCH_OTHER; 92 #endif 93 info->value->has_props = !!mc->cpu_index_to_instance_props; 94 if (info->value->has_props) { 95 CpuInstanceProperties *props; 96 props = g_malloc0(sizeof(*props)); 97 *props = mc->cpu_index_to_instance_props(ms, cpu->cpu_index); 98 info->value->props = props; 99 } 100 101 /* XXX: waiting for the qapi to support GSList */ 102 if (!cur_item) { 103 head = cur_item = info; 104 } else { 105 cur_item->next = info; 106 cur_item = info; 107 } 108 } 109 110 return head; 111 } 112 113 static CpuInfoArch sysemu_target_to_cpuinfo_arch(SysEmuTarget target) 114 { 115 /* 116 * The @SysEmuTarget -> @CpuInfoArch mapping below is based on the 117 * TARGET_ARCH -> TARGET_BASE_ARCH mapping in the "configure" script. 118 */ 119 switch (target) { 120 case SYS_EMU_TARGET_I386: 121 case SYS_EMU_TARGET_X86_64: 122 return CPU_INFO_ARCH_X86; 123 124 case SYS_EMU_TARGET_PPC: 125 case SYS_EMU_TARGET_PPC64: 126 return CPU_INFO_ARCH_PPC; 127 128 case SYS_EMU_TARGET_SPARC: 129 case SYS_EMU_TARGET_SPARC64: 130 return CPU_INFO_ARCH_SPARC; 131 132 case SYS_EMU_TARGET_MIPS: 133 case SYS_EMU_TARGET_MIPSEL: 134 case SYS_EMU_TARGET_MIPS64: 135 case SYS_EMU_TARGET_MIPS64EL: 136 return CPU_INFO_ARCH_MIPS; 137 138 case SYS_EMU_TARGET_TRICORE: 139 return CPU_INFO_ARCH_TRICORE; 140 141 case SYS_EMU_TARGET_S390X: 142 return CPU_INFO_ARCH_S390; 143 144 case SYS_EMU_TARGET_RISCV32: 145 case SYS_EMU_TARGET_RISCV64: 146 return CPU_INFO_ARCH_RISCV; 147 148 default: 149 return CPU_INFO_ARCH_OTHER; 150 } 151 } 152 153 static void cpustate_to_cpuinfo_s390(CpuInfoS390 *info, const CPUState *cpu) 154 { 155 #ifdef TARGET_S390X 156 S390CPU *s390_cpu = S390_CPU(cpu); 157 CPUS390XState *env = &s390_cpu->env; 158 159 info->cpu_state = env->cpu_state; 160 #else 161 abort(); 162 #endif 163 } 164 165 /* 166 * fast means: we NEVER interrupt vCPU threads to retrieve 167 * information from KVM. 168 */ 169 CpuInfoFastList *qmp_query_cpus_fast(Error **errp) 170 { 171 MachineState *ms = MACHINE(qdev_get_machine()); 172 MachineClass *mc = MACHINE_GET_CLASS(ms); 173 CpuInfoFastList *head = NULL, *cur_item = NULL; 174 SysEmuTarget target = qapi_enum_parse(&SysEmuTarget_lookup, TARGET_NAME, 175 -1, &error_abort); 176 CPUState *cpu; 177 178 CPU_FOREACH(cpu) { 179 CpuInfoFastList *info = g_malloc0(sizeof(*info)); 180 info->value = g_malloc0(sizeof(*info->value)); 181 182 info->value->cpu_index = cpu->cpu_index; 183 info->value->qom_path = object_get_canonical_path(OBJECT(cpu)); 184 info->value->thread_id = cpu->thread_id; 185 186 info->value->has_props = !!mc->cpu_index_to_instance_props; 187 if (info->value->has_props) { 188 CpuInstanceProperties *props; 189 props = g_malloc0(sizeof(*props)); 190 *props = mc->cpu_index_to_instance_props(ms, cpu->cpu_index); 191 info->value->props = props; 192 } 193 194 info->value->arch = sysemu_target_to_cpuinfo_arch(target); 195 info->value->target = target; 196 if (target == SYS_EMU_TARGET_S390X) { 197 cpustate_to_cpuinfo_s390(&info->value->u.s390x, cpu); 198 } 199 200 if (!cur_item) { 201 head = cur_item = info; 202 } else { 203 cur_item->next = info; 204 cur_item = info; 205 } 206 } 207 208 return head; 209 } 210 211 MachineInfoList *qmp_query_machines(Error **errp) 212 { 213 GSList *el, *machines = object_class_get_list(TYPE_MACHINE, false); 214 MachineInfoList *mach_list = NULL; 215 216 for (el = machines; el; el = el->next) { 217 MachineClass *mc = el->data; 218 MachineInfoList *entry; 219 MachineInfo *info; 220 221 info = g_malloc0(sizeof(*info)); 222 if (mc->is_default) { 223 info->has_is_default = true; 224 info->is_default = true; 225 } 226 227 if (mc->alias) { 228 info->has_alias = true; 229 info->alias = g_strdup(mc->alias); 230 } 231 232 info->name = g_strdup(mc->name); 233 info->cpu_max = !mc->max_cpus ? 1 : mc->max_cpus; 234 info->hotpluggable_cpus = mc->has_hotpluggable_cpus; 235 info->numa_mem_supported = mc->numa_mem_supported; 236 info->deprecated = !!mc->deprecation_reason; 237 if (mc->default_cpu_type) { 238 info->default_cpu_type = g_strdup(mc->default_cpu_type); 239 info->has_default_cpu_type = true; 240 } 241 if (mc->default_ram_id) { 242 info->default_ram_id = g_strdup(mc->default_ram_id); 243 info->has_default_ram_id = true; 244 } 245 246 entry = g_malloc0(sizeof(*entry)); 247 entry->value = info; 248 entry->next = mach_list; 249 mach_list = entry; 250 } 251 252 g_slist_free(machines); 253 return mach_list; 254 } 255 256 CurrentMachineParams *qmp_query_current_machine(Error **errp) 257 { 258 CurrentMachineParams *params = g_malloc0(sizeof(*params)); 259 params->wakeup_suspend_support = qemu_wakeup_suspend_enabled(); 260 261 return params; 262 } 263 264 TargetInfo *qmp_query_target(Error **errp) 265 { 266 TargetInfo *info = g_malloc0(sizeof(*info)); 267 268 info->arch = qapi_enum_parse(&SysEmuTarget_lookup, TARGET_NAME, -1, 269 &error_abort); 270 271 return info; 272 } 273 274 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp) 275 { 276 MachineState *ms = MACHINE(qdev_get_machine()); 277 MachineClass *mc = MACHINE_GET_CLASS(ms); 278 279 if (!mc->has_hotpluggable_cpus) { 280 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus"); 281 return NULL; 282 } 283 284 return machine_query_hotpluggable_cpus(ms); 285 } 286 287 void qmp_cpu_add(int64_t id, Error **errp) 288 { 289 MachineClass *mc; 290 291 mc = MACHINE_GET_CLASS(current_machine); 292 if (mc->hot_add_cpu) { 293 mc->hot_add_cpu(current_machine, id, errp); 294 } else { 295 error_setg(errp, "Not supported"); 296 } 297 } 298 299 void qmp_set_numa_node(NumaOptions *cmd, Error **errp) 300 { 301 if (!runstate_check(RUN_STATE_PRECONFIG)) { 302 error_setg(errp, "The command is permitted only in '%s' state", 303 RunState_str(RUN_STATE_PRECONFIG)); 304 return; 305 } 306 307 set_numa_options(MACHINE(qdev_get_machine()), cmd, errp); 308 } 309 310 static int query_memdev(Object *obj, void *opaque) 311 { 312 MemdevList **list = opaque; 313 MemdevList *m = NULL; 314 QObject *host_nodes; 315 Visitor *v; 316 317 if (object_dynamic_cast(obj, TYPE_MEMORY_BACKEND)) { 318 m = g_malloc0(sizeof(*m)); 319 320 m->value = g_malloc0(sizeof(*m->value)); 321 322 m->value->id = g_strdup(object_get_canonical_path_component(obj)); 323 m->value->has_id = !!m->value->id; 324 325 m->value->size = object_property_get_uint(obj, "size", 326 &error_abort); 327 m->value->merge = object_property_get_bool(obj, "merge", 328 &error_abort); 329 m->value->dump = object_property_get_bool(obj, "dump", 330 &error_abort); 331 m->value->prealloc = object_property_get_bool(obj, 332 "prealloc", 333 &error_abort); 334 m->value->policy = object_property_get_enum(obj, 335 "policy", 336 "HostMemPolicy", 337 &error_abort); 338 host_nodes = object_property_get_qobject(obj, 339 "host-nodes", 340 &error_abort); 341 v = qobject_input_visitor_new(host_nodes); 342 visit_type_uint16List(v, NULL, &m->value->host_nodes, &error_abort); 343 visit_free(v); 344 qobject_unref(host_nodes); 345 346 m->next = *list; 347 *list = m; 348 } 349 350 return 0; 351 } 352 353 MemdevList *qmp_query_memdev(Error **errp) 354 { 355 Object *obj = object_get_objects_root(); 356 MemdevList *list = NULL; 357 358 object_child_foreach(obj, query_memdev, &list); 359 return list; 360 } 361