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_initfn(Object *obj) 298 { 299 MachineState *ms = MACHINE(obj); 300 301 ms->kernel_irqchip_allowed = true; 302 ms->kvm_shadow_mem = -1; 303 ms->dump_guest_core = true; 304 ms->mem_merge = true; 305 306 object_property_add_str(obj, "accel", 307 machine_get_accel, machine_set_accel, NULL); 308 object_property_set_description(obj, "accel", 309 "Accelerator list", 310 NULL); 311 object_property_add_bool(obj, "kernel-irqchip", 312 NULL, 313 machine_set_kernel_irqchip, 314 NULL); 315 object_property_set_description(obj, "kernel-irqchip", 316 "Use KVM in-kernel irqchip", 317 NULL); 318 object_property_add(obj, "kvm-shadow-mem", "int", 319 machine_get_kvm_shadow_mem, 320 machine_set_kvm_shadow_mem, 321 NULL, NULL, NULL); 322 object_property_set_description(obj, "kvm-shadow-mem", 323 "KVM shadow MMU size", 324 NULL); 325 object_property_add_str(obj, "kernel", 326 machine_get_kernel, machine_set_kernel, NULL); 327 object_property_set_description(obj, "kernel", 328 "Linux kernel image file", 329 NULL); 330 object_property_add_str(obj, "initrd", 331 machine_get_initrd, machine_set_initrd, NULL); 332 object_property_set_description(obj, "initrd", 333 "Linux initial ramdisk file", 334 NULL); 335 object_property_add_str(obj, "append", 336 machine_get_append, machine_set_append, NULL); 337 object_property_set_description(obj, "append", 338 "Linux kernel command line", 339 NULL); 340 object_property_add_str(obj, "dtb", 341 machine_get_dtb, machine_set_dtb, NULL); 342 object_property_set_description(obj, "dtb", 343 "Linux kernel device tree file", 344 NULL); 345 object_property_add_str(obj, "dumpdtb", 346 machine_get_dumpdtb, machine_set_dumpdtb, NULL); 347 object_property_set_description(obj, "dumpdtb", 348 "Dump current dtb to a file and quit", 349 NULL); 350 object_property_add(obj, "phandle-start", "int", 351 machine_get_phandle_start, 352 machine_set_phandle_start, 353 NULL, NULL, NULL); 354 object_property_set_description(obj, "phandle-start", 355 "The first phandle ID we may generate dynamically", 356 NULL); 357 object_property_add_str(obj, "dt-compatible", 358 machine_get_dt_compatible, 359 machine_set_dt_compatible, 360 NULL); 361 object_property_set_description(obj, "dt-compatible", 362 "Overrides the \"compatible\" property of the dt root node", 363 NULL); 364 object_property_add_bool(obj, "dump-guest-core", 365 machine_get_dump_guest_core, 366 machine_set_dump_guest_core, 367 NULL); 368 object_property_set_description(obj, "dump-guest-core", 369 "Include guest memory in a core dump", 370 NULL); 371 object_property_add_bool(obj, "mem-merge", 372 machine_get_mem_merge, 373 machine_set_mem_merge, NULL); 374 object_property_set_description(obj, "mem-merge", 375 "Enable/disable memory merge support", 376 NULL); 377 object_property_add_bool(obj, "usb", 378 machine_get_usb, 379 machine_set_usb, NULL); 380 object_property_set_description(obj, "usb", 381 "Set on/off to enable/disable usb", 382 NULL); 383 object_property_add_str(obj, "firmware", 384 machine_get_firmware, 385 machine_set_firmware, NULL); 386 object_property_set_description(obj, "firmware", 387 "Firmware image", 388 NULL); 389 object_property_add_bool(obj, "iommu", 390 machine_get_iommu, 391 machine_set_iommu, NULL); 392 object_property_set_description(obj, "iommu", 393 "Set on/off to enable/disable Intel IOMMU (VT-d)", 394 NULL); 395 object_property_add_bool(obj, "suppress-vmdesc", 396 machine_get_suppress_vmdesc, 397 machine_set_suppress_vmdesc, NULL); 398 object_property_set_description(obj, "suppress-vmdesc", 399 "Set on to disable self-describing migration", 400 NULL); 401 402 /* Register notifier when init is done for sysbus sanity checks */ 403 ms->sysbus_notifier.notify = machine_init_notify; 404 qemu_add_machine_init_done_notifier(&ms->sysbus_notifier); 405 } 406 407 static void machine_finalize(Object *obj) 408 { 409 MachineState *ms = MACHINE(obj); 410 411 g_free(ms->accel); 412 g_free(ms->kernel_filename); 413 g_free(ms->initrd_filename); 414 g_free(ms->kernel_cmdline); 415 g_free(ms->dtb); 416 g_free(ms->dumpdtb); 417 g_free(ms->dt_compatible); 418 g_free(ms->firmware); 419 } 420 421 bool machine_usb(MachineState *machine) 422 { 423 return machine->usb; 424 } 425 426 bool machine_iommu(MachineState *machine) 427 { 428 return machine->iommu; 429 } 430 431 bool machine_kernel_irqchip_allowed(MachineState *machine) 432 { 433 return machine->kernel_irqchip_allowed; 434 } 435 436 bool machine_kernel_irqchip_required(MachineState *machine) 437 { 438 return machine->kernel_irqchip_required; 439 } 440 441 int machine_kvm_shadow_mem(MachineState *machine) 442 { 443 return machine->kvm_shadow_mem; 444 } 445 446 int machine_phandle_start(MachineState *machine) 447 { 448 return machine->phandle_start; 449 } 450 451 bool machine_dump_guest_core(MachineState *machine) 452 { 453 return machine->dump_guest_core; 454 } 455 456 bool machine_mem_merge(MachineState *machine) 457 { 458 return machine->mem_merge; 459 } 460 461 static const TypeInfo machine_info = { 462 .name = TYPE_MACHINE, 463 .parent = TYPE_OBJECT, 464 .abstract = true, 465 .class_size = sizeof(MachineClass), 466 .instance_size = sizeof(MachineState), 467 .instance_init = machine_initfn, 468 .instance_finalize = machine_finalize, 469 }; 470 471 static void machine_register_types(void) 472 { 473 type_register_static(&machine_info); 474 } 475 476 type_init(machine_register_types) 477