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-commands-machine.h" 15 #include "qapi/qmp/qerror.h" 16 #include "qemu/main-loop.h" 17 #include "sysemu/hostmem.h" 18 #include "sysemu/hw_accel.h" 19 #include "sysemu/numa.h" 20 #include "sysemu/runstate.h" 21 #include "sysemu/sysemu.h" 22 23 CpuInfoList *qmp_query_cpus(Error **errp) 24 { 25 MachineState *ms = MACHINE(qdev_get_machine()); 26 MachineClass *mc = MACHINE_GET_CLASS(ms); 27 CpuInfoList *head = NULL, *cur_item = NULL; 28 CPUState *cpu; 29 30 CPU_FOREACH(cpu) { 31 CpuInfoList *info; 32 #if defined(TARGET_I386) 33 X86CPU *x86_cpu = X86_CPU(cpu); 34 CPUX86State *env = &x86_cpu->env; 35 #elif defined(TARGET_PPC) 36 PowerPCCPU *ppc_cpu = POWERPC_CPU(cpu); 37 CPUPPCState *env = &ppc_cpu->env; 38 #elif defined(TARGET_SPARC) 39 SPARCCPU *sparc_cpu = SPARC_CPU(cpu); 40 CPUSPARCState *env = &sparc_cpu->env; 41 #elif defined(TARGET_RISCV) 42 RISCVCPU *riscv_cpu = RISCV_CPU(cpu); 43 CPURISCVState *env = &riscv_cpu->env; 44 #elif defined(TARGET_MIPS) 45 MIPSCPU *mips_cpu = MIPS_CPU(cpu); 46 CPUMIPSState *env = &mips_cpu->env; 47 #elif defined(TARGET_TRICORE) 48 TriCoreCPU *tricore_cpu = TRICORE_CPU(cpu); 49 CPUTriCoreState *env = &tricore_cpu->env; 50 #elif defined(TARGET_S390X) 51 S390CPU *s390_cpu = S390_CPU(cpu); 52 CPUS390XState *env = &s390_cpu->env; 53 #endif 54 55 cpu_synchronize_state(cpu); 56 57 info = g_malloc0(sizeof(*info)); 58 info->value = g_malloc0(sizeof(*info->value)); 59 info->value->CPU = cpu->cpu_index; 60 info->value->current = (cpu == first_cpu); 61 info->value->halted = cpu->halted; 62 info->value->qom_path = object_get_canonical_path(OBJECT(cpu)); 63 info->value->thread_id = cpu->thread_id; 64 #if defined(TARGET_I386) 65 info->value->arch = CPU_INFO_ARCH_X86; 66 info->value->u.x86.pc = env->eip + env->segs[R_CS].base; 67 #elif defined(TARGET_PPC) 68 info->value->arch = CPU_INFO_ARCH_PPC; 69 info->value->u.ppc.nip = env->nip; 70 #elif defined(TARGET_SPARC) 71 info->value->arch = CPU_INFO_ARCH_SPARC; 72 info->value->u.q_sparc.pc = env->pc; 73 info->value->u.q_sparc.npc = env->npc; 74 #elif defined(TARGET_MIPS) 75 info->value->arch = CPU_INFO_ARCH_MIPS; 76 info->value->u.q_mips.PC = env->active_tc.PC; 77 #elif defined(TARGET_TRICORE) 78 info->value->arch = CPU_INFO_ARCH_TRICORE; 79 info->value->u.tricore.PC = env->PC; 80 #elif defined(TARGET_S390X) 81 info->value->arch = CPU_INFO_ARCH_S390; 82 info->value->u.s390.cpu_state = env->cpu_state; 83 #elif defined(TARGET_RISCV) 84 info->value->arch = CPU_INFO_ARCH_RISCV; 85 info->value->u.riscv.pc = env->pc; 86 #else 87 info->value->arch = CPU_INFO_ARCH_OTHER; 88 #endif 89 info->value->has_props = !!mc->cpu_index_to_instance_props; 90 if (info->value->has_props) { 91 CpuInstanceProperties *props; 92 props = g_malloc0(sizeof(*props)); 93 *props = mc->cpu_index_to_instance_props(ms, cpu->cpu_index); 94 info->value->props = props; 95 } 96 97 /* XXX: waiting for the qapi to support GSList */ 98 if (!cur_item) { 99 head = cur_item = info; 100 } else { 101 cur_item->next = info; 102 cur_item = info; 103 } 104 } 105 106 return head; 107 } 108 109 static CpuInfoArch sysemu_target_to_cpuinfo_arch(SysEmuTarget target) 110 { 111 /* 112 * The @SysEmuTarget -> @CpuInfoArch mapping below is based on the 113 * TARGET_ARCH -> TARGET_BASE_ARCH mapping in the "configure" script. 114 */ 115 switch (target) { 116 case SYS_EMU_TARGET_I386: 117 case SYS_EMU_TARGET_X86_64: 118 return CPU_INFO_ARCH_X86; 119 120 case SYS_EMU_TARGET_PPC: 121 case SYS_EMU_TARGET_PPC64: 122 return CPU_INFO_ARCH_PPC; 123 124 case SYS_EMU_TARGET_SPARC: 125 case SYS_EMU_TARGET_SPARC64: 126 return CPU_INFO_ARCH_SPARC; 127 128 case SYS_EMU_TARGET_MIPS: 129 case SYS_EMU_TARGET_MIPSEL: 130 case SYS_EMU_TARGET_MIPS64: 131 case SYS_EMU_TARGET_MIPS64EL: 132 return CPU_INFO_ARCH_MIPS; 133 134 case SYS_EMU_TARGET_TRICORE: 135 return CPU_INFO_ARCH_TRICORE; 136 137 case SYS_EMU_TARGET_S390X: 138 return CPU_INFO_ARCH_S390; 139 140 case SYS_EMU_TARGET_RISCV32: 141 case SYS_EMU_TARGET_RISCV64: 142 return CPU_INFO_ARCH_RISCV; 143 144 default: 145 return CPU_INFO_ARCH_OTHER; 146 } 147 } 148 149 static void cpustate_to_cpuinfo_s390(CpuInfoS390 *info, const CPUState *cpu) 150 { 151 #ifdef TARGET_S390X 152 S390CPU *s390_cpu = S390_CPU(cpu); 153 CPUS390XState *env = &s390_cpu->env; 154 155 info->cpu_state = env->cpu_state; 156 #else 157 abort(); 158 #endif 159 } 160 161 /* 162 * fast means: we NEVER interrupt vCPU threads to retrieve 163 * information from KVM. 164 */ 165 CpuInfoFastList *qmp_query_cpus_fast(Error **errp) 166 { 167 MachineState *ms = MACHINE(qdev_get_machine()); 168 MachineClass *mc = MACHINE_GET_CLASS(ms); 169 CpuInfoFastList *head = NULL, *cur_item = NULL; 170 SysEmuTarget target = qapi_enum_parse(&SysEmuTarget_lookup, TARGET_NAME, 171 -1, &error_abort); 172 CPUState *cpu; 173 174 CPU_FOREACH(cpu) { 175 CpuInfoFastList *info = g_malloc0(sizeof(*info)); 176 info->value = g_malloc0(sizeof(*info->value)); 177 178 info->value->cpu_index = cpu->cpu_index; 179 info->value->qom_path = object_get_canonical_path(OBJECT(cpu)); 180 info->value->thread_id = cpu->thread_id; 181 182 info->value->has_props = !!mc->cpu_index_to_instance_props; 183 if (info->value->has_props) { 184 CpuInstanceProperties *props; 185 props = g_malloc0(sizeof(*props)); 186 *props = mc->cpu_index_to_instance_props(ms, cpu->cpu_index); 187 info->value->props = props; 188 } 189 190 info->value->arch = sysemu_target_to_cpuinfo_arch(target); 191 info->value->target = target; 192 if (target == SYS_EMU_TARGET_S390X) { 193 cpustate_to_cpuinfo_s390(&info->value->u.s390x, cpu); 194 } 195 196 if (!cur_item) { 197 head = cur_item = info; 198 } else { 199 cur_item->next = info; 200 cur_item = info; 201 } 202 } 203 204 return head; 205 } 206 207 MachineInfoList *qmp_query_machines(Error **errp) 208 { 209 GSList *el, *machines = object_class_get_list(TYPE_MACHINE, false); 210 MachineInfoList *mach_list = NULL; 211 212 for (el = machines; el; el = el->next) { 213 MachineClass *mc = el->data; 214 MachineInfoList *entry; 215 MachineInfo *info; 216 217 info = g_malloc0(sizeof(*info)); 218 if (mc->is_default) { 219 info->has_is_default = true; 220 info->is_default = true; 221 } 222 223 if (mc->alias) { 224 info->has_alias = true; 225 info->alias = g_strdup(mc->alias); 226 } 227 228 info->name = g_strdup(mc->name); 229 info->cpu_max = !mc->max_cpus ? 1 : mc->max_cpus; 230 info->hotpluggable_cpus = mc->has_hotpluggable_cpus; 231 info->numa_mem_supported = mc->numa_mem_supported; 232 info->deprecated = !!mc->deprecation_reason; 233 234 entry = g_malloc0(sizeof(*entry)); 235 entry->value = info; 236 entry->next = mach_list; 237 mach_list = entry; 238 } 239 240 g_slist_free(machines); 241 return mach_list; 242 } 243 244 CurrentMachineParams *qmp_query_current_machine(Error **errp) 245 { 246 CurrentMachineParams *params = g_malloc0(sizeof(*params)); 247 params->wakeup_suspend_support = qemu_wakeup_suspend_enabled(); 248 249 return params; 250 } 251 252 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp) 253 { 254 MachineState *ms = MACHINE(qdev_get_machine()); 255 MachineClass *mc = MACHINE_GET_CLASS(ms); 256 257 if (!mc->has_hotpluggable_cpus) { 258 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus"); 259 return NULL; 260 } 261 262 return machine_query_hotpluggable_cpus(ms); 263 } 264 265 void qmp_cpu_add(int64_t id, Error **errp) 266 { 267 MachineClass *mc; 268 269 mc = MACHINE_GET_CLASS(current_machine); 270 if (mc->hot_add_cpu) { 271 mc->hot_add_cpu(current_machine, id, errp); 272 } else { 273 error_setg(errp, "Not supported"); 274 } 275 } 276 277 void qmp_set_numa_node(NumaOptions *cmd, Error **errp) 278 { 279 if (!runstate_check(RUN_STATE_PRECONFIG)) { 280 error_setg(errp, "The command is permitted only in '%s' state", 281 RunState_str(RUN_STATE_PRECONFIG)); 282 return; 283 } 284 285 set_numa_options(MACHINE(qdev_get_machine()), cmd, errp); 286 } 287 288 static int query_memdev(Object *obj, void *opaque) 289 { 290 MemdevList **list = opaque; 291 MemdevList *m = NULL; 292 293 if (object_dynamic_cast(obj, TYPE_MEMORY_BACKEND)) { 294 m = g_malloc0(sizeof(*m)); 295 296 m->value = g_malloc0(sizeof(*m->value)); 297 298 m->value->id = object_get_canonical_path_component(obj); 299 m->value->has_id = !!m->value->id; 300 301 m->value->size = object_property_get_uint(obj, "size", 302 &error_abort); 303 m->value->merge = object_property_get_bool(obj, "merge", 304 &error_abort); 305 m->value->dump = object_property_get_bool(obj, "dump", 306 &error_abort); 307 m->value->prealloc = object_property_get_bool(obj, 308 "prealloc", 309 &error_abort); 310 m->value->policy = object_property_get_enum(obj, 311 "policy", 312 "HostMemPolicy", 313 &error_abort); 314 object_property_get_uint16List(obj, "host-nodes", 315 &m->value->host_nodes, 316 &error_abort); 317 318 m->next = *list; 319 *list = m; 320 } 321 322 return 0; 323 } 324 325 MemdevList *qmp_query_memdev(Error **errp) 326 { 327 Object *obj = object_get_objects_root(); 328 MemdevList *list = NULL; 329 330 object_child_foreach(obj, query_memdev, &list); 331 return list; 332 } 333