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             abort();
  69         }
  70     }
  71 }
  72
  73 static void machine_get_kvm_shadow_mem(Object *obj, Visitor *v,
  74                                        const char *name, void *opaque,
  75                                        Error **errp)
  76 {
  77     MachineState *ms = MACHINE(obj);
  78     int64_t value = ms->kvm_shadow_mem;
  79
  80     visit_type_int(v, name, &value, errp);
  81 }
  82
  83 static void machine_set_kvm_shadow_mem(Object *obj, Visitor *v,
  84                                        const char *name, void *opaque,
  85                                        Error **errp)
  86 {
  87     MachineState *ms = MACHINE(obj);
  88     Error *error = NULL;
  89     int64_t value;
  90
  91     visit_type_int(v, name, &value, &error);
  92     if (error) {
  93         error_propagate(errp, error);
  94         return;
  95     }
  96
  97     ms->kvm_shadow_mem = value;
  98 }
  99
 100 static char *machine_get_kernel(Object *obj, Error **errp)
 101 {
 102     MachineState *ms = MACHINE(obj);
 103
 104     return g_strdup(ms->kernel_filename);
 105 }
 106
 107 static void machine_set_kernel(Object *obj, const char *value, Error **errp)
 108 {
 109     MachineState *ms = MACHINE(obj);
 110
 111     g_free(ms->kernel_filename);
 112     ms->kernel_filename = g_strdup(value);
 113 }
 114
 115 static char *machine_get_initrd(Object *obj, Error **errp)
 116 {
 117     MachineState *ms = MACHINE(obj);
 118
 119     return g_strdup(ms->initrd_filename);
 120 }
 121
 122 static void machine_set_initrd(Object *obj, const char *value, Error **errp)
 123 {
 124     MachineState *ms = MACHINE(obj);
 125
 126     g_free(ms->initrd_filename);
 127     ms->initrd_filename = g_strdup(value);
 128 }
 129
 130 static char *machine_get_append(Object *obj, Error **errp)
 131 {
 132     MachineState *ms = MACHINE(obj);
 133
 134     return g_strdup(ms->kernel_cmdline);
 135 }
 136
 137 static void machine_set_append(Object *obj, const char *value, Error **errp)
 138 {
 139     MachineState *ms = MACHINE(obj);
 140
 141     g_free(ms->kernel_cmdline);
 142     ms->kernel_cmdline = g_strdup(value);
 143 }
 144
 145 static char *machine_get_dtb(Object *obj, Error **errp)
 146 {
 147     MachineState *ms = MACHINE(obj);
 148
 149     return g_strdup(ms->dtb);
 150 }
 151
 152 static void machine_set_dtb(Object *obj, const char *value, Error **errp)
 153 {
 154     MachineState *ms = MACHINE(obj);
 155
 156     g_free(ms->dtb);
 157     ms->dtb = g_strdup(value);
 158 }
 159
 160 static char *machine_get_dumpdtb(Object *obj, Error **errp)
 161 {
 162     MachineState *ms = MACHINE(obj);
 163
 164     return g_strdup(ms->dumpdtb);
 165 }
 166
 167 static void machine_set_dumpdtb(Object *obj, const char *value, Error **errp)
 168 {
 169     MachineState *ms = MACHINE(obj);
 170
 171     g_free(ms->dumpdtb);
 172     ms->dumpdtb = g_strdup(value);
 173 }
 174
 175 static void machine_get_phandle_start(Object *obj, Visitor *v,
 176                                       const char *name, void *opaque,
 177                                       Error **errp)
 178 {
 179     MachineState *ms = MACHINE(obj);
 180     int64_t value = ms->phandle_start;
 181
 182     visit_type_int(v, name, &value, errp);
 183 }
 184
 185 static void machine_set_phandle_start(Object *obj, Visitor *v,
 186                                       const char *name, void *opaque,
 187                                       Error **errp)
 188 {
 189     MachineState *ms = MACHINE(obj);
 190     Error *error = NULL;
 191     int64_t value;
 192
 193     visit_type_int(v, name, &value, &error);
 194     if (error) {
 195         error_propagate(errp, error);
 196         return;
 197     }
 198
 199     ms->phandle_start = value;
 200 }
 201
 202 static char *machine_get_dt_compatible(Object *obj, Error **errp)
 203 {
 204     MachineState *ms = MACHINE(obj);
 205
 206     return g_strdup(ms->dt_compatible);
 207 }
 208
 209 static void machine_set_dt_compatible(Object *obj, const char *value, Error **errp)
 210 {
 211     MachineState *ms = MACHINE(obj);
 212
 213     g_free(ms->dt_compatible);
 214     ms->dt_compatible = g_strdup(value);
 215 }
 216
 217 static bool machine_get_dump_guest_core(Object *obj, Error **errp)
 218 {
 219     MachineState *ms = MACHINE(obj);
 220
 221     return ms->dump_guest_core;
 222 }
 223
 224 static void machine_set_dump_guest_core(Object *obj, bool value, Error **errp)
 225 {
 226     MachineState *ms = MACHINE(obj);
 227
 228     ms->dump_guest_core = value;
 229 }
 230
 231 static bool machine_get_mem_merge(Object *obj, Error **errp)
 232 {
 233     MachineState *ms = MACHINE(obj);
 234
 235     return ms->mem_merge;
 236 }
 237
 238 static void machine_set_mem_merge(Object *obj, bool value, Error **errp)
 239 {
 240     MachineState *ms = MACHINE(obj);
 241
 242     ms->mem_merge = value;
 243 }
 244
 245 static bool machine_get_usb(Object *obj, Error **errp)
 246 {
 247     MachineState *ms = MACHINE(obj);
 248
 249     return ms->usb;
 250 }
 251
 252 static void machine_set_usb(Object *obj, bool value, Error **errp)
 253 {
 254     MachineState *ms = MACHINE(obj);
 255
 256     ms->usb = value;
 257     ms->usb_disabled = !value;
 258 }
 259
 260 static bool machine_get_graphics(Object *obj, Error **errp)
 261 {
 262     MachineState *ms = MACHINE(obj);
 263
 264     return ms->enable_graphics;
 265 }
 266
 267 static void machine_set_graphics(Object *obj, bool value, Error **errp)
 268 {
 269     MachineState *ms = MACHINE(obj);
 270
 271     ms->enable_graphics = value;
 272 }
 273
 274 static bool machine_get_igd_gfx_passthru(Object *obj, Error **errp)
 275 {
 276     MachineState *ms = MACHINE(obj);
 277
 278     return ms->igd_gfx_passthru;
 279 }
 280
 281 static void machine_set_igd_gfx_passthru(Object *obj, bool value, Error **errp)
 282 {
 283     MachineState *ms = MACHINE(obj);
 284
 285     ms->igd_gfx_passthru = value;
 286 }
 287
 288 static char *machine_get_firmware(Object *obj, Error **errp)
 289 {
 290     MachineState *ms = MACHINE(obj);
 291
 292     return g_strdup(ms->firmware);
 293 }
 294
 295 static void machine_set_firmware(Object *obj, const char *value, Error **errp)
 296 {
 297     MachineState *ms = MACHINE(obj);
 298
 299     g_free(ms->firmware);
 300     ms->firmware = g_strdup(value);
 301 }
 302
 303 static void machine_set_suppress_vmdesc(Object *obj, bool value, Error **errp)
 304 {
 305     MachineState *ms = MACHINE(obj);
 306
 307     ms->suppress_vmdesc = value;
 308 }
 309
 310 static bool machine_get_suppress_vmdesc(Object *obj, Error **errp)
 311 {
 312     MachineState *ms = MACHINE(obj);
 313
 314     return ms->suppress_vmdesc;
 315 }
 316
 317 static void machine_set_enforce_config_section(Object *obj, bool value,
 318                                              Error **errp)
 319 {
 320     MachineState *ms = MACHINE(obj);
 321
 322     ms->enforce_config_section = value;
 323 }
 324
 325 static bool machine_get_enforce_config_section(Object *obj, Error **errp)
 326 {
 327     MachineState *ms = MACHINE(obj);
 328
 329     return ms->enforce_config_section;
 330 }
 331
 332 static int error_on_sysbus_device(SysBusDevice *sbdev, void *opaque)
 333 {
 334     error_report("Option '-device %s' cannot be handled by this machine",
 335                  object_class_get_name(object_get_class(OBJECT(sbdev))));
 336     exit(1);
 337 }
 338
 339 static void machine_init_notify(Notifier *notifier, void *data)
 340 {
 341     Object *machine = qdev_get_machine();
 342     ObjectClass *oc = object_get_class(machine);
 343     MachineClass *mc = MACHINE_CLASS(oc);
 344
 345     if (mc->has_dynamic_sysbus) {
 346         /* Our machine can handle dynamic sysbus devices, we're all good */
 347         return;
 348     }
 349
 350     /*
 351      * Loop through all dynamically created devices and check whether there
 352      * are sysbus devices among them. If there are, error out.
 353      */
 354     foreach_dynamic_sysbus_device(error_on_sysbus_device, NULL);
 355 }
 356
 357 static void machine_class_init(ObjectClass *oc, void *data)
 358 {
 359     MachineClass *mc = MACHINE_CLASS(oc);
 360
 361     /* Default 128 MB as guest ram size */
 362     mc->default_ram_size = 128 * M_BYTE;
 363     mc->rom_file_has_mr = true;
 364 }
 365
 366 static void machine_class_base_init(ObjectClass *oc, void *data)
 367 {
 368     if (!object_class_is_abstract(oc)) {
 369         MachineClass *mc = MACHINE_CLASS(oc);
 370         const char *cname = object_class_get_name(oc);
 371         assert(g_str_has_suffix(cname, TYPE_MACHINE_SUFFIX));
 372         mc->name = g_strndup(cname,
 373                             strlen(cname) - strlen(TYPE_MACHINE_SUFFIX));
 374     }
 375 }
 376
 377 static void machine_initfn(Object *obj)
 378 {
 379     MachineState *ms = MACHINE(obj);
 380
 381     ms->kernel_irqchip_allowed = true;
 382     ms->kvm_shadow_mem = -1;
 383     ms->dump_guest_core = true;
 384     ms->mem_merge = true;
 385     ms->enable_graphics = true;
 386
 387     object_property_add_str(obj, "accel",
 388                             machine_get_accel, machine_set_accel, NULL);
 389     object_property_set_description(obj, "accel",
 390                                     "Accelerator list",
 391                                     NULL);
 392     object_property_add(obj, "kernel-irqchip", "OnOffSplit",
 393                         NULL,
 394                         machine_set_kernel_irqchip,
 395                         NULL, NULL, NULL);
 396     object_property_set_description(obj, "kernel-irqchip",
 397                                     "Configure KVM in-kernel irqchip",
 398                                     NULL);
 399     object_property_add(obj, "kvm-shadow-mem", "int",
 400                         machine_get_kvm_shadow_mem,
 401                         machine_set_kvm_shadow_mem,
 402                         NULL, NULL, NULL);
 403     object_property_set_description(obj, "kvm-shadow-mem",
 404                                     "KVM shadow MMU size",
 405                                     NULL);
 406     object_property_add_str(obj, "kernel",
 407                             machine_get_kernel, machine_set_kernel, NULL);
 408     object_property_set_description(obj, "kernel",
 409                                     "Linux kernel image file",
 410                                     NULL);
 411     object_property_add_str(obj, "initrd",
 412                             machine_get_initrd, machine_set_initrd, NULL);
 413     object_property_set_description(obj, "initrd",
 414                                     "Linux initial ramdisk file",
 415                                     NULL);
 416     object_property_add_str(obj, "append",
 417                             machine_get_append, machine_set_append, NULL);
 418     object_property_set_description(obj, "append",
 419                                     "Linux kernel command line",
 420                                     NULL);
 421     object_property_add_str(obj, "dtb",
 422                             machine_get_dtb, machine_set_dtb, NULL);
 423     object_property_set_description(obj, "dtb",
 424                                     "Linux kernel device tree file",
 425                                     NULL);
 426     object_property_add_str(obj, "dumpdtb",
 427                             machine_get_dumpdtb, machine_set_dumpdtb, NULL);
 428     object_property_set_description(obj, "dumpdtb",
 429                                     "Dump current dtb to a file and quit",
 430                                     NULL);
 431     object_property_add(obj, "phandle-start", "int",
 432                         machine_get_phandle_start,
 433                         machine_set_phandle_start,
 434                         NULL, NULL, NULL);
 435     object_property_set_description(obj, "phandle-start",
 436                                     "The first phandle ID we may generate dynamically",
 437                                     NULL);
 438     object_property_add_str(obj, "dt-compatible",
 439                             machine_get_dt_compatible,
 440                             machine_set_dt_compatible,
 441                             NULL);
 442     object_property_set_description(obj, "dt-compatible",
 443                                     "Overrides the \"compatible\" property of the dt root node",
 444                                     NULL);
 445     object_property_add_bool(obj, "dump-guest-core",
 446                              machine_get_dump_guest_core,
 447                              machine_set_dump_guest_core,
 448                              NULL);
 449     object_property_set_description(obj, "dump-guest-core",
 450                                     "Include guest memory in  a core dump",
 451                                     NULL);
 452     object_property_add_bool(obj, "mem-merge",
 453                              machine_get_mem_merge,
 454                              machine_set_mem_merge, NULL);
 455     object_property_set_description(obj, "mem-merge",
 456                                     "Enable/disable memory merge support",
 457                                     NULL);
 458     object_property_add_bool(obj, "usb",
 459                              machine_get_usb,
 460                              machine_set_usb, NULL);
 461     object_property_set_description(obj, "usb",
 462                                     "Set on/off to enable/disable usb",
 463                                     NULL);
 464     object_property_add_bool(obj, "graphics",
 465                              machine_get_graphics,
 466                              machine_set_graphics, NULL);
 467     object_property_set_description(obj, "graphics",
 468                                     "Set on/off to enable/disable graphics emulation",
 469                                     NULL);
 470     object_property_add_bool(obj, "igd-passthru",
 471                              machine_get_igd_gfx_passthru,
 472                              machine_set_igd_gfx_passthru, NULL);
 473     object_property_set_description(obj, "igd-passthru",
 474                                     "Set on/off to enable/disable igd passthrou",
 475                                     NULL);
 476     object_property_add_str(obj, "firmware",
 477                             machine_get_firmware,
 478                             machine_set_firmware, NULL);
 479     object_property_set_description(obj, "firmware",
 480                                     "Firmware image",
 481                                     NULL);
 482     object_property_add_bool(obj, "suppress-vmdesc",
 483                              machine_get_suppress_vmdesc,
 484                              machine_set_suppress_vmdesc, NULL);
 485     object_property_set_description(obj, "suppress-vmdesc",
 486                                     "Set on to disable self-describing migration",
 487                                     NULL);
 488     object_property_add_bool(obj, "enforce-config-section",
 489                              machine_get_enforce_config_section,
 490                              machine_set_enforce_config_section, NULL);
 491     object_property_set_description(obj, "enforce-config-section",
 492                                     "Set on to enforce configuration section migration",
 493                                     NULL);
 494
 495     /* Register notifier when init is done for sysbus sanity checks */
 496     ms->sysbus_notifier.notify = machine_init_notify;
 497     qemu_add_machine_init_done_notifier(&ms->sysbus_notifier);
 498 }
 499
 500 static void machine_finalize(Object *obj)
 501 {
 502     MachineState *ms = MACHINE(obj);
 503
 504     g_free(ms->accel);
 505     g_free(ms->kernel_filename);
 506     g_free(ms->initrd_filename);
 507     g_free(ms->kernel_cmdline);
 508     g_free(ms->dtb);
 509     g_free(ms->dumpdtb);
 510     g_free(ms->dt_compatible);
 511     g_free(ms->firmware);
 512 }
 513
 514 bool machine_usb(MachineState *machine)
 515 {
 516     return machine->usb;
 517 }
 518
 519 bool machine_kernel_irqchip_allowed(MachineState *machine)
 520 {
 521     return machine->kernel_irqchip_allowed;
 522 }
 523
 524 bool machine_kernel_irqchip_required(MachineState *machine)
 525 {
 526     return machine->kernel_irqchip_required;
 527 }
 528
 529 bool machine_kernel_irqchip_split(MachineState *machine)
 530 {
 531     return machine->kernel_irqchip_split;
 532 }
 533
 534 int machine_kvm_shadow_mem(MachineState *machine)
 535 {
 536     return machine->kvm_shadow_mem;
 537 }
 538
 539 int machine_phandle_start(MachineState *machine)
 540 {
 541     return machine->phandle_start;
 542 }
 543
 544 bool machine_dump_guest_core(MachineState *machine)
 545 {
 546     return machine->dump_guest_core;
 547 }
 548
 549 bool machine_mem_merge(MachineState *machine)
 550 {
 551     return machine->mem_merge;
 552 }
 553
 554 static void machine_class_finalize(ObjectClass *klass, void *data)
 555 {
 556     MachineClass *mc = MACHINE_CLASS(klass);
 557
 558     if (mc->compat_props) {
 559         g_array_free(mc->compat_props, true);
 560     }
 561 }
 562
 563 void machine_register_compat_props(MachineState *machine)
 564 {
 565     MachineClass *mc = MACHINE_GET_CLASS(machine);
 566     int i;
 567     GlobalProperty *p;
 568
 569     if (!mc->compat_props) {
 570         return;
 571     }
 572
 573     for (i = 0; i < mc->compat_props->len; i++) {
 574         p = g_array_index(mc->compat_props, GlobalProperty *, i);
 575         /* Machine compat_props must never cause errors: */
 576         p->errp = &error_abort;
 577         qdev_prop_register_global(p);
 578     }
 579 }
 580
 581 static const TypeInfo machine_info = {
 582     .name = TYPE_MACHINE,
 583     .parent = TYPE_OBJECT,
 584     .abstract = true,
 585     .class_size = sizeof(MachineClass),
 586     .class_init    = machine_class_init,
 587     .class_base_init = machine_class_base_init,
 588     .class_finalize = machine_class_finalize,
 589     .instance_size = sizeof(MachineState),
 590     .instance_init = machine_initfn,
 591     .instance_finalize = machine_finalize,
 592 };
 593
 594 static void machine_register_types(void)
 595 {
 596     type_register_static(&machine_info);
 597 }
 598
 599 type_init(machine_register_types)