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 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)