hw/core/machine-qmp-cmds.c

   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_set_numa_node(NumaOptions *cmd, Error **errp)
 288 {
 289     if (!runstate_check(RUN_STATE_PRECONFIG)) {
 290         error_setg(errp, "The command is permitted only in '%s' state",
 291                    RunState_str(RUN_STATE_PRECONFIG));
 292          return;
 293     }
 294
 295     set_numa_options(MACHINE(qdev_get_machine()), cmd, errp);
 296 }
 297
 298 static int query_memdev(Object *obj, void *opaque)
 299 {
 300     MemdevList **list = opaque;
 301     MemdevList *m = NULL;
 302     QObject *host_nodes;
 303     Visitor *v;
 304
 305     if (object_dynamic_cast(obj, TYPE_MEMORY_BACKEND)) {
 306         m = g_malloc0(sizeof(*m));
 307
 308         m->value = g_malloc0(sizeof(*m->value));
 309
 310         m->value->id = g_strdup(object_get_canonical_path_component(obj));
 311         m->value->has_id = !!m->value->id;
 312
 313         m->value->size = object_property_get_uint(obj, "size",
 314                                                   &error_abort);
 315         m->value->merge = object_property_get_bool(obj, "merge",
 316                                                    &error_abort);
 317         m->value->dump = object_property_get_bool(obj, "dump",
 318                                                   &error_abort);
 319         m->value->prealloc = object_property_get_bool(obj,
 320                                                       "prealloc",
 321                                                       &error_abort);
 322         m->value->policy = object_property_get_enum(obj,
 323                                                     "policy",
 324                                                     "HostMemPolicy",
 325                                                     &error_abort);
 326         host_nodes = object_property_get_qobject(obj,
 327                                                  "host-nodes",
 328                                                  &error_abort);
 329         v = qobject_input_visitor_new(host_nodes);
 330         visit_type_uint16List(v, NULL, &m->value->host_nodes, &error_abort);
 331         visit_free(v);
 332         qobject_unref(host_nodes);
 333
 334         m->next = *list;
 335         *list = m;
 336     }
 337
 338     return 0;
 339 }
 340
 341 MemdevList *qmp_query_memdev(Error **errp)
 342 {
 343     Object *obj = object_get_objects_root();
 344     MemdevList *list = NULL;
 345
 346     object_child_foreach(obj, query_memdev, &list);
 347     return list;
 348 }