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