hw/core/machine.c

   1 /*
   2  * QEMU Machine
   3  *
   4  * Copyright (C) 2014 Red Hat Inc
   5  *
   6  * Authors:
   7  *   Marcel Apfelbaum <marcel.a@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "hw/boards.h"
  15 #include "qapi/error.h"
  16 #include "qapi-visit.h"
  17 #include "qapi/visitor.h"
  18 #include "hw/sysbus.h"
  19 #include "sysemu/sysemu.h"
  20 #include "qemu/error-report.h"
  21 #include "qemu/cutils.h"
  22
  23 static char *machine_get_accel(Object *obj, Error **errp)
  24 {
  25     MachineState *ms = MACHINE(obj);
  26
  27     return g_strdup(ms->accel);
  28 }
  29
  30 static void machine_set_accel(Object *obj, const char *value, Error **errp)
  31 {
  32     MachineState *ms = MACHINE(obj);
  33
  34     g_free(ms->accel);
  35     ms->accel = g_strdup(value);
  36 }
  37
  38 static void machine_set_kernel_irqchip(Object *obj, Visitor *v,
  39                                        const char *name, void *opaque,
  40                                        Error **errp)
  41 {
  42     Error *err = NULL;
  43     MachineState *ms = MACHINE(obj);
  44     OnOffSplit mode;
  45
  46     visit_type_OnOffSplit(v, name, &mode, &err);
  47     if (err) {
  48         error_propagate(errp, err);
  49         return;
  50     } else {
  51         switch (mode) {
  52         case ON_OFF_SPLIT_ON:
  53             ms->kernel_irqchip_allowed = true;
  54             ms->kernel_irqchip_required = true;
  55             ms->kernel_irqchip_split = false;
  56             break;
  57         case ON_OFF_SPLIT_OFF:
  58             ms->kernel_irqchip_allowed = false;
  59             ms->kernel_irqchip_required = false;
  60             ms->kernel_irqchip_split = false;
  61             break;
  62         case ON_OFF_SPLIT_SPLIT:
  63             ms->kernel_irqchip_allowed = true;
  64             ms->kernel_irqchip_required = true;
  65             ms->kernel_irqchip_split = true;
  66             break;
  67         default:
  68             /* The value was checked in visit_type_OnOffSplit() above. If
  69              * we get here, then something is wrong in QEMU.
  70              */
  71             abort();
  72         }
  73     }
  74 }
  75
  76 static void machine_get_kvm_shadow_mem(Object *obj, Visitor *v,
  77                                        const char *name, void *opaque,
  78                                        Error **errp)
  79 {
  80     MachineState *ms = MACHINE(obj);
  81     int64_t value = ms->kvm_shadow_mem;
  82
  83     visit_type_int(v, name, &value, errp);
  84 }
  85
  86 static void machine_set_kvm_shadow_mem(Object *obj, Visitor *v,
  87                                        const char *name, void *opaque,
  88                                        Error **errp)
  89 {
  90     MachineState *ms = MACHINE(obj);
  91     Error *error = NULL;
  92     int64_t value;
  93
  94     visit_type_int(v, name, &value, &error);
  95     if (error) {
  96         error_propagate(errp, error);
  97         return;
  98     }
  99
 100     ms->kvm_shadow_mem = value;
 101 }
 102
 103 static char *machine_get_kernel(Object *obj, Error **errp)
 104 {
 105     MachineState *ms = MACHINE(obj);
 106
 107     return g_strdup(ms->kernel_filename);
 108 }
 109
 110 static void machine_set_kernel(Object *obj, const char *value, Error **errp)
 111 {
 112     MachineState *ms = MACHINE(obj);
 113
 114     g_free(ms->kernel_filename);
 115     ms->kernel_filename = g_strdup(value);
 116 }
 117
 118 static char *machine_get_initrd(Object *obj, Error **errp)
 119 {
 120     MachineState *ms = MACHINE(obj);
 121
 122     return g_strdup(ms->initrd_filename);
 123 }
 124
 125 static void machine_set_initrd(Object *obj, const char *value, Error **errp)
 126 {
 127     MachineState *ms = MACHINE(obj);
 128
 129     g_free(ms->initrd_filename);
 130     ms->initrd_filename = g_strdup(value);
 131 }
 132
 133 static char *machine_get_append(Object *obj, Error **errp)
 134 {
 135     MachineState *ms = MACHINE(obj);
 136
 137     return g_strdup(ms->kernel_cmdline);
 138 }
 139
 140 static void machine_set_append(Object *obj, const char *value, Error **errp)
 141 {
 142     MachineState *ms = MACHINE(obj);
 143
 144     g_free(ms->kernel_cmdline);
 145     ms->kernel_cmdline = g_strdup(value);
 146 }
 147
 148 static char *machine_get_dtb(Object *obj, Error **errp)
 149 {
 150     MachineState *ms = MACHINE(obj);
 151
 152     return g_strdup(ms->dtb);
 153 }
 154
 155 static void machine_set_dtb(Object *obj, const char *value, Error **errp)
 156 {
 157     MachineState *ms = MACHINE(obj);
 158
 159     g_free(ms->dtb);
 160     ms->dtb = g_strdup(value);
 161 }
 162
 163 static char *machine_get_dumpdtb(Object *obj, Error **errp)
 164 {
 165     MachineState *ms = MACHINE(obj);
 166
 167     return g_strdup(ms->dumpdtb);
 168 }
 169
 170 static void machine_set_dumpdtb(Object *obj, const char *value, Error **errp)
 171 {
 172     MachineState *ms = MACHINE(obj);
 173
 174     g_free(ms->dumpdtb);
 175     ms->dumpdtb = g_strdup(value);
 176 }
 177
 178 static void machine_get_phandle_start(Object *obj, Visitor *v,
 179                                       const char *name, void *opaque,
 180                                       Error **errp)
 181 {
 182     MachineState *ms = MACHINE(obj);
 183     int64_t value = ms->phandle_start;
 184
 185     visit_type_int(v, name, &value, errp);
 186 }
 187
 188 static void machine_set_phandle_start(Object *obj, Visitor *v,
 189                                       const char *name, void *opaque,
 190                                       Error **errp)
 191 {
 192     MachineState *ms = MACHINE(obj);
 193     Error *error = NULL;
 194     int64_t value;
 195
 196     visit_type_int(v, name, &value, &error);
 197     if (error) {
 198         error_propagate(errp, error);
 199         return;
 200     }
 201
 202     ms->phandle_start = value;
 203 }
 204
 205 static char *machine_get_dt_compatible(Object *obj, Error **errp)
 206 {
 207     MachineState *ms = MACHINE(obj);
 208
 209     return g_strdup(ms->dt_compatible);
 210 }
 211
 212 static void machine_set_dt_compatible(Object *obj, const char *value, Error **errp)
 213 {
 214     MachineState *ms = MACHINE(obj);
 215
 216     g_free(ms->dt_compatible);
 217     ms->dt_compatible = g_strdup(value);
 218 }
 219
 220 static bool machine_get_dump_guest_core(Object *obj, Error **errp)
 221 {
 222     MachineState *ms = MACHINE(obj);
 223
 224     return ms->dump_guest_core;
 225 }
 226
 227 static void machine_set_dump_guest_core(Object *obj, bool value, Error **errp)
 228 {
 229     MachineState *ms = MACHINE(obj);
 230
 231     ms->dump_guest_core = value;
 232 }
 233
 234 static bool machine_get_mem_merge(Object *obj, Error **errp)
 235 {
 236     MachineState *ms = MACHINE(obj);
 237
 238     return ms->mem_merge;
 239 }
 240
 241 static void machine_set_mem_merge(Object *obj, bool value, Error **errp)
 242 {
 243     MachineState *ms = MACHINE(obj);
 244
 245     ms->mem_merge = value;
 246 }
 247
 248 static bool machine_get_usb(Object *obj, Error **errp)
 249 {
 250     MachineState *ms = MACHINE(obj);
 251
 252     return ms->usb;
 253 }
 254
 255 static void machine_set_usb(Object *obj, bool value, Error **errp)
 256 {
 257     MachineState *ms = MACHINE(obj);
 258
 259     ms->usb = value;
 260     ms->usb_disabled = !value;
 261 }
 262
 263 static bool machine_get_graphics(Object *obj, Error **errp)
 264 {
 265     MachineState *ms = MACHINE(obj);
 266
 267     return ms->enable_graphics;
 268 }
 269
 270 static void machine_set_graphics(Object *obj, bool value, Error **errp)
 271 {
 272     MachineState *ms = MACHINE(obj);
 273
 274     ms->enable_graphics = value;
 275 }
 276
 277 static bool machine_get_igd_gfx_passthru(Object *obj, Error **errp)
 278 {
 279     MachineState *ms = MACHINE(obj);
 280
 281     return ms->igd_gfx_passthru;
 282 }
 283
 284 static void machine_set_igd_gfx_passthru(Object *obj, bool value, Error **errp)
 285 {
 286     MachineState *ms = MACHINE(obj);
 287
 288     ms->igd_gfx_passthru = value;
 289 }
 290
 291 static char *machine_get_firmware(Object *obj, Error **errp)
 292 {
 293     MachineState *ms = MACHINE(obj);
 294
 295     return g_strdup(ms->firmware);
 296 }
 297
 298 static void machine_set_firmware(Object *obj, const char *value, Error **errp)
 299 {
 300     MachineState *ms = MACHINE(obj);
 301
 302     g_free(ms->firmware);
 303     ms->firmware = g_strdup(value);
 304 }
 305
 306 static void machine_set_suppress_vmdesc(Object *obj, bool value, Error **errp)
 307 {
 308     MachineState *ms = MACHINE(obj);
 309
 310     ms->suppress_vmdesc = value;
 311 }
 312
 313 static bool machine_get_suppress_vmdesc(Object *obj, Error **errp)
 314 {
 315     MachineState *ms = MACHINE(obj);
 316
 317     return ms->suppress_vmdesc;
 318 }
 319
 320 static void machine_set_enforce_config_section(Object *obj, bool value,
 321                                              Error **errp)
 322 {
 323     MachineState *ms = MACHINE(obj);
 324
 325     ms->enforce_config_section = value;
 326 }
 327
 328 static bool machine_get_enforce_config_section(Object *obj, Error **errp)
 329 {
 330     MachineState *ms = MACHINE(obj);
 331
 332     return ms->enforce_config_section;
 333 }
 334
 335 static void error_on_sysbus_device(SysBusDevice *sbdev, void *opaque)
 336 {
 337     error_report("Option '-device %s' cannot be handled by this machine",
 338                  object_class_get_name(object_get_class(OBJECT(sbdev))));
 339     exit(1);
 340 }
 341
 342 static void machine_init_notify(Notifier *notifier, void *data)
 343 {
 344     Object *machine = qdev_get_machine();
 345     ObjectClass *oc = object_get_class(machine);
 346     MachineClass *mc = MACHINE_CLASS(oc);
 347
 348     if (mc->has_dynamic_sysbus) {
 349         /* Our machine can handle dynamic sysbus devices, we're all good */
 350         return;
 351     }
 352
 353     /*
 354      * Loop through all dynamically created devices and check whether there
 355      * are sysbus devices among them. If there are, error out.
 356      */
 357     foreach_dynamic_sysbus_device(error_on_sysbus_device, NULL);
 358 }
 359
 360 static void machine_class_init(ObjectClass *oc, void *data)
 361 {
 362     MachineClass *mc = MACHINE_CLASS(oc);
 363
 364     /* Default 128 MB as guest ram size */
 365     mc->default_ram_size = 128 * M_BYTE;
 366     mc->rom_file_has_mr = true;
 367
 368     object_class_property_add_str(oc, "accel",
 369         machine_get_accel, machine_set_accel, &error_abort);
 370     object_class_property_set_description(oc, "accel",
 371         "Accelerator list", &error_abort);
 372
 373     object_class_property_add(oc, "kernel-irqchip", "OnOffSplit",
 374         NULL, machine_set_kernel_irqchip,
 375         NULL, NULL, &error_abort);
 376     object_class_property_set_description(oc, "kernel-irqchip",
 377         "Configure KVM in-kernel irqchip", &error_abort);
 378
 379     object_class_property_add(oc, "kvm-shadow-mem", "int",
 380         machine_get_kvm_shadow_mem, machine_set_kvm_shadow_mem,
 381         NULL, NULL, &error_abort);
 382     object_class_property_set_description(oc, "kvm-shadow-mem",
 383         "KVM shadow MMU size", &error_abort);
 384
 385     object_class_property_add_str(oc, "kernel",
 386         machine_get_kernel, machine_set_kernel, &error_abort);
 387     object_class_property_set_description(oc, "kernel",
 388         "Linux kernel image file", &error_abort);
 389
 390     object_class_property_add_str(oc, "initrd",
 391         machine_get_initrd, machine_set_initrd, &error_abort);
 392     object_class_property_set_description(oc, "initrd",
 393         "Linux initial ramdisk file", &error_abort);
 394
 395     object_class_property_add_str(oc, "append",
 396         machine_get_append, machine_set_append, &error_abort);
 397     object_class_property_set_description(oc, "append",
 398         "Linux kernel command line", &error_abort);
 399
 400     object_class_property_add_str(oc, "dtb",
 401         machine_get_dtb, machine_set_dtb, &error_abort);
 402     object_class_property_set_description(oc, "dtb",
 403         "Linux kernel device tree file", &error_abort);
 404
 405     object_class_property_add_str(oc, "dumpdtb",
 406         machine_get_dumpdtb, machine_set_dumpdtb, &error_abort);
 407     object_class_property_set_description(oc, "dumpdtb",
 408         "Dump current dtb to a file and quit", &error_abort);
 409
 410     object_class_property_add(oc, "phandle-start", "int",
 411         machine_get_phandle_start, machine_set_phandle_start,
 412         NULL, NULL, &error_abort);
 413     object_class_property_set_description(oc, "phandle-start",
 414             "The first phandle ID we may generate dynamically", &error_abort);
 415
 416     object_class_property_add_str(oc, "dt-compatible",
 417         machine_get_dt_compatible, machine_set_dt_compatible, &error_abort);
 418     object_class_property_set_description(oc, "dt-compatible",
 419         "Overrides the \"compatible\" property of the dt root node",
 420         &error_abort);
 421
 422     object_class_property_add_bool(oc, "dump-guest-core",
 423         machine_get_dump_guest_core, machine_set_dump_guest_core, &error_abort);
 424     object_class_property_set_description(oc, "dump-guest-core",
 425         "Include guest memory in  a core dump", &error_abort);
 426
 427     object_class_property_add_bool(oc, "mem-merge",
 428         machine_get_mem_merge, machine_set_mem_merge, &error_abort);
 429     object_class_property_set_description(oc, "mem-merge",
 430         "Enable/disable memory merge support", &error_abort);
 431
 432     object_class_property_add_bool(oc, "usb",
 433         machine_get_usb, machine_set_usb, &error_abort);
 434     object_class_property_set_description(oc, "usb",
 435         "Set on/off to enable/disable usb", &error_abort);
 436
 437     object_class_property_add_bool(oc, "graphics",
 438         machine_get_graphics, machine_set_graphics, &error_abort);
 439     object_class_property_set_description(oc, "graphics",
 440         "Set on/off to enable/disable graphics emulation", &error_abort);
 441
 442     object_class_property_add_bool(oc, "igd-passthru",
 443         machine_get_igd_gfx_passthru, machine_set_igd_gfx_passthru,
 444         &error_abort);
 445     object_class_property_set_description(oc, "igd-passthru",
 446         "Set on/off to enable/disable igd passthrou", &error_abort);
 447
 448     object_class_property_add_str(oc, "firmware",
 449         machine_get_firmware, machine_set_firmware,
 450         &error_abort);
 451     object_class_property_set_description(oc, "firmware",
 452         "Firmware image", &error_abort);
 453
 454     object_class_property_add_bool(oc, "suppress-vmdesc",
 455         machine_get_suppress_vmdesc, machine_set_suppress_vmdesc,
 456         &error_abort);
 457     object_class_property_set_description(oc, "suppress-vmdesc",
 458         "Set on to disable self-describing migration", &error_abort);
 459
 460     object_class_property_add_bool(oc, "enforce-config-section",
 461         machine_get_enforce_config_section, machine_set_enforce_config_section,
 462         &error_abort);
 463     object_class_property_set_description(oc, "enforce-config-section",
 464         "Set on to enforce configuration section migration", &error_abort);
 465 }
 466
 467 static void machine_class_base_init(ObjectClass *oc, void *data)
 468 {
 469     if (!object_class_is_abstract(oc)) {
 470         MachineClass *mc = MACHINE_CLASS(oc);
 471         const char *cname = object_class_get_name(oc);
 472         assert(g_str_has_suffix(cname, TYPE_MACHINE_SUFFIX));
 473         mc->name = g_strndup(cname,
 474                             strlen(cname) - strlen(TYPE_MACHINE_SUFFIX));
 475     }
 476 }
 477
 478 static void machine_initfn(Object *obj)
 479 {
 480     MachineState *ms = MACHINE(obj);
 481
 482     ms->kernel_irqchip_allowed = true;
 483     ms->kvm_shadow_mem = -1;
 484     ms->dump_guest_core = true;
 485     ms->mem_merge = true;
 486     ms->enable_graphics = true;
 487
 488     /* Register notifier when init is done for sysbus sanity checks */
 489     ms->sysbus_notifier.notify = machine_init_notify;
 490     qemu_add_machine_init_done_notifier(&ms->sysbus_notifier);
 491 }
 492
 493 static void machine_finalize(Object *obj)
 494 {
 495     MachineState *ms = MACHINE(obj);
 496
 497     g_free(ms->accel);
 498     g_free(ms->kernel_filename);
 499     g_free(ms->initrd_filename);
 500     g_free(ms->kernel_cmdline);
 501     g_free(ms->dtb);
 502     g_free(ms->dumpdtb);
 503     g_free(ms->dt_compatible);
 504     g_free(ms->firmware);
 505 }
 506
 507 bool machine_usb(MachineState *machine)
 508 {
 509     return machine->usb;
 510 }
 511
 512 bool machine_kernel_irqchip_allowed(MachineState *machine)
 513 {
 514     return machine->kernel_irqchip_allowed;
 515 }
 516
 517 bool machine_kernel_irqchip_required(MachineState *machine)
 518 {
 519     return machine->kernel_irqchip_required;
 520 }
 521
 522 bool machine_kernel_irqchip_split(MachineState *machine)
 523 {
 524     return machine->kernel_irqchip_split;
 525 }
 526
 527 int machine_kvm_shadow_mem(MachineState *machine)
 528 {
 529     return machine->kvm_shadow_mem;
 530 }
 531
 532 int machine_phandle_start(MachineState *machine)
 533 {
 534     return machine->phandle_start;
 535 }
 536
 537 bool machine_dump_guest_core(MachineState *machine)
 538 {
 539     return machine->dump_guest_core;
 540 }
 541
 542 bool machine_mem_merge(MachineState *machine)
 543 {
 544     return machine->mem_merge;
 545 }
 546
 547 static void machine_class_finalize(ObjectClass *klass, void *data)
 548 {
 549     MachineClass *mc = MACHINE_CLASS(klass);
 550
 551     if (mc->compat_props) {
 552         g_array_free(mc->compat_props, true);
 553     }
 554     g_free(mc->name);
 555 }
 556
 557 void machine_register_compat_props(MachineState *machine)
 558 {
 559     MachineClass *mc = MACHINE_GET_CLASS(machine);
 560     int i;
 561     GlobalProperty *p;
 562
 563     if (!mc->compat_props) {
 564         return;
 565     }
 566
 567     for (i = 0; i < mc->compat_props->len; i++) {
 568         p = g_array_index(mc->compat_props, GlobalProperty *, i);
 569         /* Machine compat_props must never cause errors: */
 570         p->errp = &error_abort;
 571         qdev_prop_register_global(p);
 572     }
 573 }
 574
 575 static const TypeInfo machine_info = {
 576     .name = TYPE_MACHINE,
 577     .parent = TYPE_OBJECT,
 578     .abstract = true,
 579     .class_size = sizeof(MachineClass),
 580     .class_init    = machine_class_init,
 581     .class_base_init = machine_class_base_init,
 582     .class_finalize = machine_class_finalize,
 583     .instance_size = sizeof(MachineState),
 584     .instance_init = machine_initfn,
 585     .instance_finalize = machine_finalize,
 586 };
 587
 588 static void machine_register_types(void)
 589 {
 590     type_register_static(&machine_info);
 591 }
 592
 593 type_init(machine_register_types)