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 int 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
 369 static void machine_class_base_init(ObjectClass *oc, void *data)
 370 {
 371     if (!object_class_is_abstract(oc)) {
 372         MachineClass *mc = MACHINE_CLASS(oc);
 373         const char *cname = object_class_get_name(oc);
 374         assert(g_str_has_suffix(cname, TYPE_MACHINE_SUFFIX));
 375         mc->name = g_strndup(cname,
 376                             strlen(cname) - strlen(TYPE_MACHINE_SUFFIX));
 377     }
 378 }
 379
 380 static void machine_initfn(Object *obj)
 381 {
 382     MachineState *ms = MACHINE(obj);
 383
 384     ms->kernel_irqchip_allowed = true;
 385     ms->kvm_shadow_mem = -1;
 386     ms->dump_guest_core = true;
 387     ms->mem_merge = true;
 388     ms->enable_graphics = true;
 389
 390     object_property_add_str(obj, "accel",
 391                             machine_get_accel, machine_set_accel, NULL);
 392     object_property_set_description(obj, "accel",
 393                                     "Accelerator list",
 394                                     NULL);
 395     object_property_add(obj, "kernel-irqchip", "OnOffSplit",
 396                         NULL,
 397                         machine_set_kernel_irqchip,
 398                         NULL, NULL, NULL);
 399     object_property_set_description(obj, "kernel-irqchip",
 400                                     "Configure KVM in-kernel irqchip",
 401                                     NULL);
 402     object_property_add(obj, "kvm-shadow-mem", "int",
 403                         machine_get_kvm_shadow_mem,
 404                         machine_set_kvm_shadow_mem,
 405                         NULL, NULL, NULL);
 406     object_property_set_description(obj, "kvm-shadow-mem",
 407                                     "KVM shadow MMU size",
 408                                     NULL);
 409     object_property_add_str(obj, "kernel",
 410                             machine_get_kernel, machine_set_kernel, NULL);
 411     object_property_set_description(obj, "kernel",
 412                                     "Linux kernel image file",
 413                                     NULL);
 414     object_property_add_str(obj, "initrd",
 415                             machine_get_initrd, machine_set_initrd, NULL);
 416     object_property_set_description(obj, "initrd",
 417                                     "Linux initial ramdisk file",
 418                                     NULL);
 419     object_property_add_str(obj, "append",
 420                             machine_get_append, machine_set_append, NULL);
 421     object_property_set_description(obj, "append",
 422                                     "Linux kernel command line",
 423                                     NULL);
 424     object_property_add_str(obj, "dtb",
 425                             machine_get_dtb, machine_set_dtb, NULL);
 426     object_property_set_description(obj, "dtb",
 427                                     "Linux kernel device tree file",
 428                                     NULL);
 429     object_property_add_str(obj, "dumpdtb",
 430                             machine_get_dumpdtb, machine_set_dumpdtb, NULL);
 431     object_property_set_description(obj, "dumpdtb",
 432                                     "Dump current dtb to a file and quit",
 433                                     NULL);
 434     object_property_add(obj, "phandle-start", "int",
 435                         machine_get_phandle_start,
 436                         machine_set_phandle_start,
 437                         NULL, NULL, NULL);
 438     object_property_set_description(obj, "phandle-start",
 439                                     "The first phandle ID we may generate dynamically",
 440                                     NULL);
 441     object_property_add_str(obj, "dt-compatible",
 442                             machine_get_dt_compatible,
 443                             machine_set_dt_compatible,
 444                             NULL);
 445     object_property_set_description(obj, "dt-compatible",
 446                                     "Overrides the \"compatible\" property of the dt root node",
 447                                     NULL);
 448     object_property_add_bool(obj, "dump-guest-core",
 449                              machine_get_dump_guest_core,
 450                              machine_set_dump_guest_core,
 451                              NULL);
 452     object_property_set_description(obj, "dump-guest-core",
 453                                     "Include guest memory in  a core dump",
 454                                     NULL);
 455     object_property_add_bool(obj, "mem-merge",
 456                              machine_get_mem_merge,
 457                              machine_set_mem_merge, NULL);
 458     object_property_set_description(obj, "mem-merge",
 459                                     "Enable/disable memory merge support",
 460                                     NULL);
 461     object_property_add_bool(obj, "usb",
 462                              machine_get_usb,
 463                              machine_set_usb, NULL);
 464     object_property_set_description(obj, "usb",
 465                                     "Set on/off to enable/disable usb",
 466                                     NULL);
 467     object_property_add_bool(obj, "graphics",
 468                              machine_get_graphics,
 469                              machine_set_graphics, NULL);
 470     object_property_set_description(obj, "graphics",
 471                                     "Set on/off to enable/disable graphics emulation",
 472                                     NULL);
 473     object_property_add_bool(obj, "igd-passthru",
 474                              machine_get_igd_gfx_passthru,
 475                              machine_set_igd_gfx_passthru, NULL);
 476     object_property_set_description(obj, "igd-passthru",
 477                                     "Set on/off to enable/disable igd passthrou",
 478                                     NULL);
 479     object_property_add_str(obj, "firmware",
 480                             machine_get_firmware,
 481                             machine_set_firmware, NULL);
 482     object_property_set_description(obj, "firmware",
 483                                     "Firmware image",
 484                                     NULL);
 485     object_property_add_bool(obj, "suppress-vmdesc",
 486                              machine_get_suppress_vmdesc,
 487                              machine_set_suppress_vmdesc, NULL);
 488     object_property_set_description(obj, "suppress-vmdesc",
 489                                     "Set on to disable self-describing migration",
 490                                     NULL);
 491     object_property_add_bool(obj, "enforce-config-section",
 492                              machine_get_enforce_config_section,
 493                              machine_set_enforce_config_section, NULL);
 494     object_property_set_description(obj, "enforce-config-section",
 495                                     "Set on to enforce configuration section migration",
 496                                     NULL);
 497
 498     /* Register notifier when init is done for sysbus sanity checks */
 499     ms->sysbus_notifier.notify = machine_init_notify;
 500     qemu_add_machine_init_done_notifier(&ms->sysbus_notifier);
 501 }
 502
 503 static void machine_finalize(Object *obj)
 504 {
 505     MachineState *ms = MACHINE(obj);
 506
 507     g_free(ms->accel);
 508     g_free(ms->kernel_filename);
 509     g_free(ms->initrd_filename);
 510     g_free(ms->kernel_cmdline);
 511     g_free(ms->dtb);
 512     g_free(ms->dumpdtb);
 513     g_free(ms->dt_compatible);
 514     g_free(ms->firmware);
 515 }
 516
 517 bool machine_usb(MachineState *machine)
 518 {
 519     return machine->usb;
 520 }
 521
 522 bool machine_kernel_irqchip_allowed(MachineState *machine)
 523 {
 524     return machine->kernel_irqchip_allowed;
 525 }
 526
 527 bool machine_kernel_irqchip_required(MachineState *machine)
 528 {
 529     return machine->kernel_irqchip_required;
 530 }
 531
 532 bool machine_kernel_irqchip_split(MachineState *machine)
 533 {
 534     return machine->kernel_irqchip_split;
 535 }
 536
 537 int machine_kvm_shadow_mem(MachineState *machine)
 538 {
 539     return machine->kvm_shadow_mem;
 540 }
 541
 542 int machine_phandle_start(MachineState *machine)
 543 {
 544     return machine->phandle_start;
 545 }
 546
 547 bool machine_dump_guest_core(MachineState *machine)
 548 {
 549     return machine->dump_guest_core;
 550 }
 551
 552 bool machine_mem_merge(MachineState *machine)
 553 {
 554     return machine->mem_merge;
 555 }
 556
 557 static void machine_class_finalize(ObjectClass *klass, void *data)
 558 {
 559     MachineClass *mc = MACHINE_CLASS(klass);
 560
 561     if (mc->compat_props) {
 562         g_array_free(mc->compat_props, true);
 563     }
 564     g_free(mc->name);
 565 }
 566
 567 void machine_register_compat_props(MachineState *machine)
 568 {
 569     MachineClass *mc = MACHINE_GET_CLASS(machine);
 570     int i;
 571     GlobalProperty *p;
 572
 573     if (!mc->compat_props) {
 574         return;
 575     }
 576
 577     for (i = 0; i < mc->compat_props->len; i++) {
 578         p = g_array_index(mc->compat_props, GlobalProperty *, i);
 579         /* Machine compat_props must never cause errors: */
 580         p->errp = &error_abort;
 581         qdev_prop_register_global(p);
 582     }
 583 }
 584
 585 static const TypeInfo machine_info = {
 586     .name = TYPE_MACHINE,
 587     .parent = TYPE_OBJECT,
 588     .abstract = true,
 589     .class_size = sizeof(MachineClass),
 590     .class_init    = machine_class_init,
 591     .class_base_init = machine_class_base_init,
 592     .class_finalize = machine_class_finalize,
 593     .instance_size = sizeof(MachineState),
 594     .instance_init = machine_initfn,
 595     .instance_finalize = machine_finalize,
 596 };
 597
 598 static void machine_register_types(void)
 599 {
 600     type_register_static(&machine_info);
 601 }
 602
 603 type_init(machine_register_types)