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