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