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 char *machine_get_firmware(Object *obj, Error **errp) 230 { 231 MachineState *ms = MACHINE(obj); 232 233 return g_strdup(ms->firmware); 234 } 235 236 static void machine_set_firmware(Object *obj, const char *value, Error **errp) 237 { 238 MachineState *ms = MACHINE(obj); 239 240 g_free(ms->firmware); 241 ms->firmware = g_strdup(value); 242 } 243 244 static bool machine_get_iommu(Object *obj, Error **errp) 245 { 246 MachineState *ms = MACHINE(obj); 247 248 return ms->iommu; 249 } 250 251 static void machine_set_iommu(Object *obj, bool value, Error **errp) 252 { 253 MachineState *ms = MACHINE(obj); 254 255 ms->iommu = value; 256 } 257 258 static void machine_set_suppress_vmdesc(Object *obj, bool value, Error **errp) 259 { 260 MachineState *ms = MACHINE(obj); 261 262 ms->suppress_vmdesc = value; 263 } 264 265 static bool machine_get_suppress_vmdesc(Object *obj, Error **errp) 266 { 267 MachineState *ms = MACHINE(obj); 268 269 return ms->suppress_vmdesc; 270 } 271 272 static int error_on_sysbus_device(SysBusDevice *sbdev, void *opaque) 273 { 274 error_report("Option '-device %s' cannot be handled by this machine", 275 object_class_get_name(object_get_class(OBJECT(sbdev)))); 276 exit(1); 277 } 278 279 static void machine_init_notify(Notifier *notifier, void *data) 280 { 281 Object *machine = qdev_get_machine(); 282 ObjectClass *oc = object_get_class(machine); 283 MachineClass *mc = MACHINE_CLASS(oc); 284 285 if (mc->has_dynamic_sysbus) { 286 /* Our machine can handle dynamic sysbus devices, we're all good */ 287 return; 288 } 289 290 /* 291 * Loop through all dynamically created devices and check whether there 292 * are sysbus devices among them. If there are, error out. 293 */ 294 foreach_dynamic_sysbus_device(error_on_sysbus_device, NULL); 295 } 296 297 static void machine_class_init(ObjectClass *oc, void *data) 298 { 299 MachineClass *mc = MACHINE_CLASS(oc); 300 301 /* Default 128 MB as guest ram size */ 302 mc->default_ram_size = 128 * M_BYTE; 303 } 304 305 static void machine_initfn(Object *obj) 306 { 307 MachineState *ms = MACHINE(obj); 308 309 ms->kernel_irqchip_allowed = true; 310 ms->kvm_shadow_mem = -1; 311 ms->dump_guest_core = true; 312 ms->mem_merge = true; 313 314 object_property_add_str(obj, "accel", 315 machine_get_accel, machine_set_accel, NULL); 316 object_property_set_description(obj, "accel", 317 "Accelerator list", 318 NULL); 319 object_property_add_bool(obj, "kernel-irqchip", 320 NULL, 321 machine_set_kernel_irqchip, 322 NULL); 323 object_property_set_description(obj, "kernel-irqchip", 324 "Use KVM in-kernel irqchip", 325 NULL); 326 object_property_add(obj, "kvm-shadow-mem", "int", 327 machine_get_kvm_shadow_mem, 328 machine_set_kvm_shadow_mem, 329 NULL, NULL, NULL); 330 object_property_set_description(obj, "kvm-shadow-mem", 331 "KVM shadow MMU size", 332 NULL); 333 object_property_add_str(obj, "kernel", 334 machine_get_kernel, machine_set_kernel, NULL); 335 object_property_set_description(obj, "kernel", 336 "Linux kernel image file", 337 NULL); 338 object_property_add_str(obj, "initrd", 339 machine_get_initrd, machine_set_initrd, NULL); 340 object_property_set_description(obj, "initrd", 341 "Linux initial ramdisk file", 342 NULL); 343 object_property_add_str(obj, "append", 344 machine_get_append, machine_set_append, NULL); 345 object_property_set_description(obj, "append", 346 "Linux kernel command line", 347 NULL); 348 object_property_add_str(obj, "dtb", 349 machine_get_dtb, machine_set_dtb, NULL); 350 object_property_set_description(obj, "dtb", 351 "Linux kernel device tree file", 352 NULL); 353 object_property_add_str(obj, "dumpdtb", 354 machine_get_dumpdtb, machine_set_dumpdtb, NULL); 355 object_property_set_description(obj, "dumpdtb", 356 "Dump current dtb to a file and quit", 357 NULL); 358 object_property_add(obj, "phandle-start", "int", 359 machine_get_phandle_start, 360 machine_set_phandle_start, 361 NULL, NULL, NULL); 362 object_property_set_description(obj, "phandle-start", 363 "The first phandle ID we may generate dynamically", 364 NULL); 365 object_property_add_str(obj, "dt-compatible", 366 machine_get_dt_compatible, 367 machine_set_dt_compatible, 368 NULL); 369 object_property_set_description(obj, "dt-compatible", 370 "Overrides the \"compatible\" property of the dt root node", 371 NULL); 372 object_property_add_bool(obj, "dump-guest-core", 373 machine_get_dump_guest_core, 374 machine_set_dump_guest_core, 375 NULL); 376 object_property_set_description(obj, "dump-guest-core", 377 "Include guest memory in a core dump", 378 NULL); 379 object_property_add_bool(obj, "mem-merge", 380 machine_get_mem_merge, 381 machine_set_mem_merge, NULL); 382 object_property_set_description(obj, "mem-merge", 383 "Enable/disable memory merge support", 384 NULL); 385 object_property_add_bool(obj, "usb", 386 machine_get_usb, 387 machine_set_usb, NULL); 388 object_property_set_description(obj, "usb", 389 "Set on/off to enable/disable usb", 390 NULL); 391 object_property_add_str(obj, "firmware", 392 machine_get_firmware, 393 machine_set_firmware, NULL); 394 object_property_set_description(obj, "firmware", 395 "Firmware image", 396 NULL); 397 object_property_add_bool(obj, "iommu", 398 machine_get_iommu, 399 machine_set_iommu, NULL); 400 object_property_set_description(obj, "iommu", 401 "Set on/off to enable/disable Intel IOMMU (VT-d)", 402 NULL); 403 object_property_add_bool(obj, "suppress-vmdesc", 404 machine_get_suppress_vmdesc, 405 machine_set_suppress_vmdesc, NULL); 406 object_property_set_description(obj, "suppress-vmdesc", 407 "Set on to disable self-describing migration", 408 NULL); 409 410 /* Register notifier when init is done for sysbus sanity checks */ 411 ms->sysbus_notifier.notify = machine_init_notify; 412 qemu_add_machine_init_done_notifier(&ms->sysbus_notifier); 413 } 414 415 static void machine_finalize(Object *obj) 416 { 417 MachineState *ms = MACHINE(obj); 418 419 g_free(ms->accel); 420 g_free(ms->kernel_filename); 421 g_free(ms->initrd_filename); 422 g_free(ms->kernel_cmdline); 423 g_free(ms->dtb); 424 g_free(ms->dumpdtb); 425 g_free(ms->dt_compatible); 426 g_free(ms->firmware); 427 } 428 429 bool machine_usb(MachineState *machine) 430 { 431 return machine->usb; 432 } 433 434 bool machine_iommu(MachineState *machine) 435 { 436 return machine->iommu; 437 } 438 439 bool machine_kernel_irqchip_allowed(MachineState *machine) 440 { 441 return machine->kernel_irqchip_allowed; 442 } 443 444 bool machine_kernel_irqchip_required(MachineState *machine) 445 { 446 return machine->kernel_irqchip_required; 447 } 448 449 int machine_kvm_shadow_mem(MachineState *machine) 450 { 451 return machine->kvm_shadow_mem; 452 } 453 454 int machine_phandle_start(MachineState *machine) 455 { 456 return machine->phandle_start; 457 } 458 459 bool machine_dump_guest_core(MachineState *machine) 460 { 461 return machine->dump_guest_core; 462 } 463 464 bool machine_mem_merge(MachineState *machine) 465 { 466 return machine->mem_merge; 467 } 468 469 static const TypeInfo machine_info = { 470 .name = TYPE_MACHINE, 471 .parent = TYPE_OBJECT, 472 .abstract = true, 473 .class_size = sizeof(MachineClass), 474 .class_init = machine_class_init, 475 .instance_size = sizeof(MachineState), 476 .instance_init = machine_initfn, 477 .instance_finalize = machine_finalize, 478 }; 479 480 static void machine_register_types(void) 481 { 482 type_register_static(&machine_info); 483 } 484 485 type_init(machine_register_types) 486