qdev-monitor.c

   1 /*
   2  *  Dynamic device configuration and creation.
   3  *
   4  *  Copyright (c) 2009 CodeSourcery
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "qemu/osdep.h"
  21 #include "hw/qdev.h"
  22 #include "hw/sysbus.h"
  23 #include "monitor/monitor.h"
  24 #include "monitor/qdev.h"
  25 #include "qmp-commands.h"
  26 #include "sysemu/arch_init.h"
  27 #include "qapi/qmp/qerror.h"
  28 #include "qemu/config-file.h"
  29 #include "qemu/error-report.h"
  30 #include "qemu/help_option.h"
  31
  32 /*
  33  * Aliases were a bad idea from the start.  Let's keep them
  34  * from spreading further.
  35  */
  36 typedef struct QDevAlias
  37 {
  38     const char *typename;
  39     const char *alias;
  40     uint32_t arch_mask;
  41 } QDevAlias;
  42
  43 /* Please keep this table sorted by typename. */
  44 static const QDevAlias qdev_alias_table[] = {
  45     { "e1000", "e1000-82540em" },
  46     { "ich9-ahci", "ahci" },
  47     { "kvm-pci-assign", "pci-assign" },
  48     { "lsi53c895a", "lsi" },
  49     { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_S390X },
  50     { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  51     { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_S390X },
  52     { "virtio-balloon-pci", "virtio-balloon",
  53             QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  54     { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_S390X },
  55     { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  56     { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_S390X },
  57     { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  58     { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_S390X },
  59     { "virtio-input-host-pci", "virtio-input-host",
  60             QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  61     { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_S390X },
  62     { "virtio-keyboard-pci", "virtio-keyboard",
  63             QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  64     { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_S390X },
  65     { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  66     { "virtio-net-ccw", "virtio-net", QEMU_ARCH_S390X },
  67     { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  68     { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_S390X },
  69     { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  70     { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_S390X },
  71     { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  72     { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_S390X },
  73     { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  74     { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_S390X },
  75     { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
  76     { }
  77 };
  78
  79 static const char *qdev_class_get_alias(DeviceClass *dc)
  80 {
  81     const char *typename = object_class_get_name(OBJECT_CLASS(dc));
  82     int i;
  83
  84     for (i = 0; qdev_alias_table[i].typename; i++) {
  85         if (qdev_alias_table[i].arch_mask &&
  86             !(qdev_alias_table[i].arch_mask & arch_type)) {
  87             continue;
  88         }
  89
  90         if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
  91             return qdev_alias_table[i].alias;
  92         }
  93     }
  94
  95     return NULL;
  96 }
  97
  98 static bool qdev_class_has_alias(DeviceClass *dc)
  99 {
 100     return (qdev_class_get_alias(dc) != NULL);
 101 }
 102
 103 static void qdev_print_devinfo(DeviceClass *dc)
 104 {
 105     error_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
 106     if (dc->bus_type) {
 107         error_printf(", bus %s", dc->bus_type);
 108     }
 109     if (qdev_class_has_alias(dc)) {
 110         error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
 111     }
 112     if (dc->desc) {
 113         error_printf(", desc \"%s\"", dc->desc);
 114     }
 115     if (dc->cannot_instantiate_with_device_add_yet) {
 116         error_printf(", no-user");
 117     }
 118     error_printf("\n");
 119 }
 120
 121 static gint devinfo_cmp(gconstpointer a, gconstpointer b)
 122 {
 123     return strcasecmp(object_class_get_name((ObjectClass *)a),
 124                       object_class_get_name((ObjectClass *)b));
 125 }
 126
 127 static void qdev_print_devinfos(bool show_no_user)
 128 {
 129     static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = {
 130         [DEVICE_CATEGORY_BRIDGE]  = "Controller/Bridge/Hub",
 131         [DEVICE_CATEGORY_USB]     = "USB",
 132         [DEVICE_CATEGORY_STORAGE] = "Storage",
 133         [DEVICE_CATEGORY_NETWORK] = "Network",
 134         [DEVICE_CATEGORY_INPUT]   = "Input",
 135         [DEVICE_CATEGORY_DISPLAY] = "Display",
 136         [DEVICE_CATEGORY_SOUND]   = "Sound",
 137         [DEVICE_CATEGORY_MISC]    = "Misc",
 138         [DEVICE_CATEGORY_MAX]     = "Uncategorized",
 139     };
 140     GSList *list, *elt;
 141     int i;
 142     bool cat_printed;
 143
 144     list = g_slist_sort(object_class_get_list(TYPE_DEVICE, false),
 145                         devinfo_cmp);
 146
 147     for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) {
 148         cat_printed = false;
 149         for (elt = list; elt; elt = elt->next) {
 150             DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
 151                                                  TYPE_DEVICE);
 152             if ((i < DEVICE_CATEGORY_MAX
 153                  ? !test_bit(i, dc->categories)
 154                  : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX))
 155                 || (!show_no_user
 156                     && dc->cannot_instantiate_with_device_add_yet)) {
 157                 continue;
 158             }
 159             if (!cat_printed) {
 160                 error_printf("%s%s devices:\n", i ? "\n" : "",
 161                              cat_name[i]);
 162                 cat_printed = true;
 163             }
 164             qdev_print_devinfo(dc);
 165         }
 166     }
 167
 168     g_slist_free(list);
 169 }
 170
 171 static int set_property(void *opaque, const char *name, const char *value,
 172                         Error **errp)
 173 {
 174     Object *obj = opaque;
 175     Error *err = NULL;
 176
 177     if (strcmp(name, "driver") == 0)
 178         return 0;
 179     if (strcmp(name, "bus") == 0)
 180         return 0;
 181
 182     object_property_parse(obj, value, name, &err);
 183     if (err != NULL) {
 184         error_propagate(errp, err);
 185         return -1;
 186     }
 187     return 0;
 188 }
 189
 190 static const char *find_typename_by_alias(const char *alias)
 191 {
 192     int i;
 193
 194     for (i = 0; qdev_alias_table[i].alias; i++) {
 195         if (qdev_alias_table[i].arch_mask &&
 196             !(qdev_alias_table[i].arch_mask & arch_type)) {
 197             continue;
 198         }
 199
 200         if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
 201             return qdev_alias_table[i].typename;
 202         }
 203     }
 204
 205     return NULL;
 206 }
 207
 208 static DeviceClass *qdev_get_device_class(const char **driver, Error **errp)
 209 {
 210     ObjectClass *oc;
 211     DeviceClass *dc;
 212     const char *original_name = *driver;
 213
 214     oc = object_class_by_name(*driver);
 215     if (!oc) {
 216         const char *typename = find_typename_by_alias(*driver);
 217
 218         if (typename) {
 219             *driver = typename;
 220             oc = object_class_by_name(*driver);
 221         }
 222     }
 223
 224     if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
 225         if (*driver != original_name) {
 226             error_setg(errp, "'%s' (alias '%s') is not a valid device model"
 227                        " name", original_name, *driver);
 228         } else {
 229             error_setg(errp, "'%s' is not a valid device model name", *driver);
 230         }
 231         return NULL;
 232     }
 233
 234     if (object_class_is_abstract(oc)) {
 235         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
 236                    "non-abstract device type");
 237         return NULL;
 238     }
 239
 240     dc = DEVICE_CLASS(oc);
 241     if (dc->cannot_instantiate_with_device_add_yet ||
 242         (qdev_hotplug && !dc->hotpluggable)) {
 243         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
 244                    "pluggable device type");
 245         return NULL;
 246     }
 247
 248     return dc;
 249 }
 250
 251
 252 int qdev_device_help(QemuOpts *opts)
 253 {
 254     Error *local_err = NULL;
 255     const char *driver;
 256     DevicePropertyInfoList *prop_list;
 257     DevicePropertyInfoList *prop;
 258
 259     driver = qemu_opt_get(opts, "driver");
 260     if (driver && is_help_option(driver)) {
 261         qdev_print_devinfos(false);
 262         return 1;
 263     }
 264
 265     if (!driver || !qemu_opt_has_help_opt(opts)) {
 266         return 0;
 267     }
 268
 269     if (!object_class_by_name(driver)) {
 270         const char *typename = find_typename_by_alias(driver);
 271
 272         if (typename) {
 273             driver = typename;
 274         }
 275     }
 276
 277     prop_list = qmp_device_list_properties(driver, &local_err);
 278     if (local_err) {
 279         goto error;
 280     }
 281
 282     for (prop = prop_list; prop; prop = prop->next) {
 283         error_printf("%s.%s=%s", driver,
 284                      prop->value->name,
 285                      prop->value->type);
 286         if (prop->value->has_description) {
 287             error_printf(" (%s)\n", prop->value->description);
 288         } else {
 289             error_printf("\n");
 290         }
 291     }
 292
 293     qapi_free_DevicePropertyInfoList(prop_list);
 294     return 1;
 295
 296 error:
 297     error_report_err(local_err);
 298     return 1;
 299 }
 300
 301 static Object *qdev_get_peripheral(void)
 302 {
 303     static Object *dev;
 304
 305     if (dev == NULL) {
 306         dev = container_get(qdev_get_machine(), "/peripheral");
 307     }
 308
 309     return dev;
 310 }
 311
 312 static Object *qdev_get_peripheral_anon(void)
 313 {
 314     static Object *dev;
 315
 316     if (dev == NULL) {
 317         dev = container_get(qdev_get_machine(), "/peripheral-anon");
 318     }
 319
 320     return dev;
 321 }
 322
 323 static void qbus_list_bus(DeviceState *dev, Error **errp)
 324 {
 325     BusState *child;
 326     const char *sep = " ";
 327
 328     error_append_hint(errp, "child buses at \"%s\":",
 329                       dev->id ? dev->id : object_get_typename(OBJECT(dev)));
 330     QLIST_FOREACH(child, &dev->child_bus, sibling) {
 331         error_append_hint(errp, "%s\"%s\"", sep, child->name);
 332         sep = ", ";
 333     }
 334     error_append_hint(errp, "\n");
 335 }
 336
 337 static void qbus_list_dev(BusState *bus, Error **errp)
 338 {
 339     BusChild *kid;
 340     const char *sep = " ";
 341
 342     error_append_hint(errp, "devices at \"%s\":", bus->name);
 343     QTAILQ_FOREACH(kid, &bus->children, sibling) {
 344         DeviceState *dev = kid->child;
 345         error_append_hint(errp, "%s\"%s\"", sep,
 346                           object_get_typename(OBJECT(dev)));
 347         if (dev->id) {
 348             error_append_hint(errp, "/\"%s\"", dev->id);
 349         }
 350         sep = ", ";
 351     }
 352     error_append_hint(errp, "\n");
 353 }
 354
 355 static BusState *qbus_find_bus(DeviceState *dev, char *elem)
 356 {
 357     BusState *child;
 358
 359     QLIST_FOREACH(child, &dev->child_bus, sibling) {
 360         if (strcmp(child->name, elem) == 0) {
 361             return child;
 362         }
 363     }
 364     return NULL;
 365 }
 366
 367 static DeviceState *qbus_find_dev(BusState *bus, char *elem)
 368 {
 369     BusChild *kid;
 370
 371     /*
 372      * try to match in order:
 373      *   (1) instance id, if present
 374      *   (2) driver name
 375      *   (3) driver alias, if present
 376      */
 377     QTAILQ_FOREACH(kid, &bus->children, sibling) {
 378         DeviceState *dev = kid->child;
 379         if (dev->id  &&  strcmp(dev->id, elem) == 0) {
 380             return dev;
 381         }
 382     }
 383     QTAILQ_FOREACH(kid, &bus->children, sibling) {
 384         DeviceState *dev = kid->child;
 385         if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
 386             return dev;
 387         }
 388     }
 389     QTAILQ_FOREACH(kid, &bus->children, sibling) {
 390         DeviceState *dev = kid->child;
 391         DeviceClass *dc = DEVICE_GET_CLASS(dev);
 392
 393         if (qdev_class_has_alias(dc) &&
 394             strcmp(qdev_class_get_alias(dc), elem) == 0) {
 395             return dev;
 396         }
 397     }
 398     return NULL;
 399 }
 400
 401 static inline bool qbus_is_full(BusState *bus)
 402 {
 403     BusClass *bus_class = BUS_GET_CLASS(bus);
 404     return bus_class->max_dev && bus->max_index >= bus_class->max_dev;
 405 }
 406
 407 /*
 408  * Search the tree rooted at @bus for a bus.
 409  * If @name, search for a bus with that name.  Note that bus names
 410  * need not be unique.  Yes, that's screwed up.
 411  * Else search for a bus that is a subtype of @bus_typename.
 412  * If more than one exists, prefer one that can take another device.
 413  * Return the bus if found, else %NULL.
 414  */
 415 static BusState *qbus_find_recursive(BusState *bus, const char *name,
 416                                      const char *bus_typename)
 417 {
 418     BusChild *kid;
 419     BusState *pick, *child, *ret;
 420     bool match;
 421
 422     assert(name || bus_typename);
 423     if (name) {
 424         match = !strcmp(bus->name, name);
 425     } else {
 426         match = !!object_dynamic_cast(OBJECT(bus), bus_typename);
 427     }
 428
 429     if (match && !qbus_is_full(bus)) {
 430         return bus;             /* root matches and isn't full */
 431     }
 432
 433     pick = match ? bus : NULL;
 434
 435     QTAILQ_FOREACH(kid, &bus->children, sibling) {
 436         DeviceState *dev = kid->child;
 437         QLIST_FOREACH(child, &dev->child_bus, sibling) {
 438             ret = qbus_find_recursive(child, name, bus_typename);
 439             if (ret && !qbus_is_full(ret)) {
 440                 return ret;     /* a descendant matches and isn't full */
 441             }
 442             if (ret && !pick) {
 443                 pick = ret;
 444             }
 445         }
 446     }
 447
 448     /* root or a descendant matches, but is full */
 449     return pick;
 450 }
 451
 452 static BusState *qbus_find(const char *path, Error **errp)
 453 {
 454     DeviceState *dev;
 455     BusState *bus;
 456     char elem[128];
 457     int pos, len;
 458
 459     /* find start element */
 460     if (path[0] == '/') {
 461         bus = sysbus_get_default();
 462         pos = 0;
 463     } else {
 464         if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
 465             assert(!path[0]);
 466             elem[0] = len = 0;
 467         }
 468         bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
 469         if (!bus) {
 470             error_setg(errp, "Bus '%s' not found", elem);
 471             return NULL;
 472         }
 473         pos = len;
 474     }
 475
 476     for (;;) {
 477         assert(path[pos] == '/' || !path[pos]);
 478         while (path[pos] == '/') {
 479             pos++;
 480         }
 481         if (path[pos] == '\0') {
 482             break;
 483         }
 484
 485         /* find device */
 486         if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
 487             g_assert_not_reached();
 488             elem[0] = len = 0;
 489         }
 490         pos += len;
 491         dev = qbus_find_dev(bus, elem);
 492         if (!dev) {
 493             error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 494                       "Device '%s' not found", elem);
 495             qbus_list_dev(bus, errp);
 496             return NULL;
 497         }
 498
 499         assert(path[pos] == '/' || !path[pos]);
 500         while (path[pos] == '/') {
 501             pos++;
 502         }
 503         if (path[pos] == '\0') {
 504             /* last specified element is a device.  If it has exactly
 505              * one child bus accept it nevertheless */
 506             if (dev->num_child_bus == 1) {
 507                 bus = QLIST_FIRST(&dev->child_bus);
 508                 break;
 509             }
 510             if (dev->num_child_bus) {
 511                 error_setg(errp, "Device '%s' has multiple child buses",
 512                            elem);
 513                 qbus_list_bus(dev, errp);
 514             } else {
 515                 error_setg(errp, "Device '%s' has no child bus", elem);
 516             }
 517             return NULL;
 518         }
 519
 520         /* find bus */
 521         if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
 522             g_assert_not_reached();
 523             elem[0] = len = 0;
 524         }
 525         pos += len;
 526         bus = qbus_find_bus(dev, elem);
 527         if (!bus) {
 528             error_setg(errp, "Bus '%s' not found", elem);
 529             qbus_list_bus(dev, errp);
 530             return NULL;
 531         }
 532     }
 533
 534     if (qbus_is_full(bus)) {
 535         error_setg(errp, "Bus '%s' is full", path);
 536         return NULL;
 537     }
 538     return bus;
 539 }
 540
 541 DeviceState *qdev_device_add(QemuOpts *opts, Error **errp)
 542 {
 543     DeviceClass *dc;
 544     const char *driver, *path, *id;
 545     DeviceState *dev;
 546     BusState *bus = NULL;
 547     Error *err = NULL;
 548
 549     driver = qemu_opt_get(opts, "driver");
 550     if (!driver) {
 551         error_setg(errp, QERR_MISSING_PARAMETER, "driver");
 552         return NULL;
 553     }
 554
 555     /* find driver */
 556     dc = qdev_get_device_class(&driver, errp);
 557     if (!dc) {
 558         return NULL;
 559     }
 560
 561     /* find bus */
 562     path = qemu_opt_get(opts, "bus");
 563     if (path != NULL) {
 564         bus = qbus_find(path, errp);
 565         if (!bus) {
 566             return NULL;
 567         }
 568         if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) {
 569             error_setg(errp, "Device '%s' can't go on %s bus",
 570                        driver, object_get_typename(OBJECT(bus)));
 571             return NULL;
 572         }
 573     } else if (dc->bus_type != NULL) {
 574         bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type);
 575         if (!bus || qbus_is_full(bus)) {
 576             error_setg(errp, "No '%s' bus found for device '%s'",
 577                        dc->bus_type, driver);
 578             return NULL;
 579         }
 580     }
 581     if (qdev_hotplug && bus && !qbus_is_hotpluggable(bus)) {
 582         error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name);
 583         return NULL;
 584     }
 585
 586     /* create device */
 587     dev = DEVICE(object_new(driver));
 588
 589     if (bus) {
 590         qdev_set_parent_bus(dev, bus);
 591     }
 592
 593     id = qemu_opts_id(opts);
 594     if (id) {
 595         dev->id = id;
 596     }
 597
 598     if (dev->id) {
 599         object_property_add_child(qdev_get_peripheral(), dev->id,
 600                                   OBJECT(dev), NULL);
 601     } else {
 602         static int anon_count;
 603         gchar *name = g_strdup_printf("device[%d]", anon_count++);
 604         object_property_add_child(qdev_get_peripheral_anon(), name,
 605                                   OBJECT(dev), NULL);
 606         g_free(name);
 607     }
 608
 609     /* set properties */
 610     if (qemu_opt_foreach(opts, set_property, dev, &err)) {
 611         error_propagate(errp, err);
 612         object_unparent(OBJECT(dev));
 613         object_unref(OBJECT(dev));
 614         return NULL;
 615     }
 616
 617     dev->opts = opts;
 618     object_property_set_bool(OBJECT(dev), true, "realized", &err);
 619     if (err != NULL) {
 620         error_propagate(errp, err);
 621         dev->opts = NULL;
 622         object_unparent(OBJECT(dev));
 623         object_unref(OBJECT(dev));
 624         return NULL;
 625     }
 626     return dev;
 627 }
 628
 629
 630 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
 631 static void qbus_print(Monitor *mon, BusState *bus, int indent);
 632
 633 static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
 634                              int indent)
 635 {
 636     if (!props)
 637         return;
 638     for (; props->name; props++) {
 639         Error *err = NULL;
 640         char *value;
 641         char *legacy_name = g_strdup_printf("legacy-%s", props->name);
 642         if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
 643             value = object_property_get_str(OBJECT(dev), legacy_name, &err);
 644         } else {
 645             value = object_property_print(OBJECT(dev), props->name, true, &err);
 646         }
 647         g_free(legacy_name);
 648
 649         if (err) {
 650             error_free(err);
 651             continue;
 652         }
 653         qdev_printf("%s = %s\n", props->name,
 654                     value && *value ? value : "<null>");
 655         g_free(value);
 656     }
 657 }
 658
 659 static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
 660 {
 661     BusClass *bc = BUS_GET_CLASS(bus);
 662
 663     if (bc->print_dev) {
 664         bc->print_dev(mon, dev, indent);
 665     }
 666 }
 667
 668 static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
 669 {
 670     ObjectClass *class;
 671     BusState *child;
 672     NamedGPIOList *ngl;
 673
 674     qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
 675                 dev->id ? dev->id : "");
 676     indent += 2;
 677     QLIST_FOREACH(ngl, &dev->gpios, node) {
 678         if (ngl->num_in) {
 679             qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "",
 680                         ngl->num_in);
 681         }
 682         if (ngl->num_out) {
 683             qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "",
 684                         ngl->num_out);
 685         }
 686     }
 687     class = object_get_class(OBJECT(dev));
 688     do {
 689         qdev_print_props(mon, dev, DEVICE_CLASS(class)->props, indent);
 690         class = object_class_get_parent(class);
 691     } while (class != object_class_by_name(TYPE_DEVICE));
 692     bus_print_dev(dev->parent_bus, mon, dev, indent);
 693     QLIST_FOREACH(child, &dev->child_bus, sibling) {
 694         qbus_print(mon, child, indent);
 695     }
 696 }
 697
 698 static void qbus_print(Monitor *mon, BusState *bus, int indent)
 699 {
 700     BusChild *kid;
 701
 702     qdev_printf("bus: %s\n", bus->name);
 703     indent += 2;
 704     qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
 705     QTAILQ_FOREACH(kid, &bus->children, sibling) {
 706         DeviceState *dev = kid->child;
 707         qdev_print(mon, dev, indent);
 708     }
 709 }
 710 #undef qdev_printf
 711
 712 void hmp_info_qtree(Monitor *mon, const QDict *qdict)
 713 {
 714     if (sysbus_get_default())
 715         qbus_print(mon, sysbus_get_default(), 0);
 716 }
 717
 718 void hmp_info_qdm(Monitor *mon, const QDict *qdict)
 719 {
 720     qdev_print_devinfos(true);
 721 }
 722
 723 typedef struct QOMCompositionState {
 724     Monitor *mon;
 725     int indent;
 726 } QOMCompositionState;
 727
 728 static void print_qom_composition(Monitor *mon, Object *obj, int indent);
 729
 730 static int print_qom_composition_child(Object *obj, void *opaque)
 731 {
 732     QOMCompositionState *s = opaque;
 733
 734     print_qom_composition(s->mon, obj, s->indent);
 735
 736     return 0;
 737 }
 738
 739 static void print_qom_composition(Monitor *mon, Object *obj, int indent)
 740 {
 741     QOMCompositionState s = {
 742         .mon = mon,
 743         .indent = indent + 2,
 744     };
 745     char *name;
 746
 747     if (obj == object_get_root()) {
 748         name = g_strdup("");
 749     } else {
 750         name = object_get_canonical_path_component(obj);
 751     }
 752     monitor_printf(mon, "%*s/%s (%s)\n", indent, "", name,
 753                    object_get_typename(obj));
 754     g_free(name);
 755     object_child_foreach(obj, print_qom_composition_child, &s);
 756 }
 757
 758 void hmp_info_qom_tree(Monitor *mon, const QDict *dict)
 759 {
 760     const char *path = qdict_get_try_str(dict, "path");
 761     Object *obj;
 762     bool ambiguous = false;
 763
 764     if (path) {
 765         obj = object_resolve_path(path, &ambiguous);
 766         if (!obj) {
 767             monitor_printf(mon, "Path '%s' could not be resolved.\n", path);
 768             return;
 769         }
 770         if (ambiguous) {
 771             monitor_printf(mon, "Warning: Path '%s' is ambiguous.\n", path);
 772             return;
 773         }
 774     } else {
 775         obj = qdev_get_machine();
 776     }
 777     print_qom_composition(mon, obj, 0);
 778 }
 779
 780 void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp)
 781 {
 782     Error *local_err = NULL;
 783     QemuOpts *opts;
 784     DeviceState *dev;
 785
 786     opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
 787     if (local_err) {
 788         error_propagate(errp, local_err);
 789         return;
 790     }
 791     if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
 792         qemu_opts_del(opts);
 793         return;
 794     }
 795     dev = qdev_device_add(opts, &local_err);
 796     if (!dev) {
 797         error_propagate(errp, local_err);
 798         qemu_opts_del(opts);
 799         return;
 800     }
 801     object_unref(OBJECT(dev));
 802 }
 803
 804 void qmp_device_del(const char *id, Error **errp)
 805 {
 806     Object *obj;
 807
 808     if (id[0] == '/') {
 809         obj = object_resolve_path(id, NULL);
 810     } else {
 811         char *root_path = object_get_canonical_path(qdev_get_peripheral());
 812         char *path = g_strdup_printf("%s/%s", root_path, id);
 813
 814         g_free(root_path);
 815         obj = object_resolve_path_type(path, TYPE_DEVICE, NULL);
 816         g_free(path);
 817     }
 818
 819     if (!obj) {
 820         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 821                   "Device '%s' not found", id);
 822         return;
 823     }
 824
 825     if (!object_dynamic_cast(obj, TYPE_DEVICE)) {
 826         error_setg(errp, "%s is not a hotpluggable device", id);
 827         return;
 828     }
 829
 830     qdev_unplug(DEVICE(obj), errp);
 831 }
 832
 833 void qdev_machine_init(void)
 834 {
 835     qdev_get_peripheral_anon();
 836     qdev_get_peripheral();
 837 }
 838
 839 QemuOptsList qemu_device_opts = {
 840     .name = "device",
 841     .implied_opt_name = "driver",
 842     .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
 843     .desc = {
 844         /*
 845          * no elements => accept any
 846          * sanity checking will happen later
 847          * when setting device properties
 848          */
 849         { /* end of list */ }
 850     },
 851 };
 852
 853 QemuOptsList qemu_global_opts = {
 854     .name = "global",
 855     .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
 856     .desc = {
 857         {
 858             .name = "driver",
 859             .type = QEMU_OPT_STRING,
 860         },{
 861             .name = "property",
 862             .type = QEMU_OPT_STRING,
 863         },{
 864             .name = "value",
 865             .type = QEMU_OPT_STRING,
 866         },
 867         { /* end of list */ }
 868     },
 869 };
 870
 871 int qemu_global_option(const char *str)
 872 {
 873     char driver[64], property[64];
 874     QemuOpts *opts;
 875     int rc, offset;
 876
 877     rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset);
 878     if (rc == 2 && str[offset] == '=') {
 879         opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
 880         qemu_opt_set(opts, "driver", driver, &error_abort);
 881         qemu_opt_set(opts, "property", property, &error_abort);
 882         qemu_opt_set(opts, "value", str + offset + 1, &error_abort);
 883         return 0;
 884     }
 885
 886     opts = qemu_opts_parse_noisily(&qemu_global_opts, str, false);
 887     if (!opts) {
 888         return -1;
 889     }
 890
 891     return 0;
 892 }