| 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 2.1 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/core/sysbus.h" |
| 22 | #include "monitor/hmp.h" |
| 23 | #include "monitor/hmp-completion.h" |
| 24 | #include "monitor/monitor.h" |
| 25 | #include "monitor/qdev.h" |
| 26 | #include "qemu/base-arch-defs.h" |
| 27 | #include "system/runstate.h" |
| 28 | #include "qapi/error.h" |
| 29 | #include "qapi/qapi-commands-qdev.h" |
| 30 | #include "qapi/qmp-registry.h" |
| 31 | #include "qobject/qdict.h" |
| 32 | #include "qapi/qmp/qerror.h" |
| 33 | #include "qobject/qstring.h" |
| 34 | #include "qapi/qobject-input-visitor.h" |
| 35 | #include "qemu/config-file.h" |
| 36 | #include "qemu/error-report.h" |
| 37 | #include "qemu/help_option.h" |
| 38 | #include "qemu/id.h" |
| 39 | #include "qemu/option.h" |
| 40 | #include "qemu/qemu-print.h" |
| 41 | #include "qemu/option_int.h" |
| 42 | #include "system/block-backend.h" |
| 43 | #include "migration/misc.h" |
| 44 | #include "qemu/cutils.h" |
| 45 | #include "hw/core/qdev-properties.h" |
| 46 | #include "hw/core/clock.h" |
| 47 | #include "hw/core/boards.h" |
| 48 | |
| 49 | /* |
| 50 | * Aliases were a bad idea from the start. Let's keep them |
| 51 | * from spreading further. |
| 52 | */ |
| 53 | typedef struct QDevAlias |
| 54 | { |
| 55 | const char *typename; |
| 56 | const char *alias; |
| 57 | uint32_t arch_mask; |
| 58 | } QDevAlias; |
| 59 | |
| 60 | /* default virtio transport per architecture */ |
| 61 | #define QEMU_ARCH_VIRTIO_PCI (QEMU_ARCH_ALPHA | \ |
| 62 | QEMU_ARCH_ARM | \ |
| 63 | QEMU_ARCH_HPPA | \ |
| 64 | QEMU_ARCH_I386 | \ |
| 65 | QEMU_ARCH_LOONGARCH | \ |
| 66 | QEMU_ARCH_MIPS | \ |
| 67 | QEMU_ARCH_OR1K | \ |
| 68 | QEMU_ARCH_PPC | \ |
| 69 | QEMU_ARCH_RISCV | \ |
| 70 | QEMU_ARCH_SH4 | \ |
| 71 | QEMU_ARCH_SPARC | \ |
| 72 | QEMU_ARCH_XTENSA) |
| 73 | #define QEMU_ARCH_VIRTIO_CCW (QEMU_ARCH_S390X) |
| 74 | #define QEMU_ARCH_VIRTIO_MMIO (QEMU_ARCH_M68K | QEMU_ARCH_HEXAGON) |
| 75 | |
| 76 | /* Please keep this table sorted by typename. */ |
| 77 | static const QDevAlias qdev_alias_table[] = { |
| 78 | { "AC97", "ac97" }, |
| 79 | { "e1000", "e1000-82540em" }, |
| 80 | { "ES1370", "es1370" }, |
| 81 | { "ich9-ahci", "ahci" }, |
| 82 | { "lsi53c895a", "lsi" }, |
| 83 | { "virtio-9p-device", "virtio-9p", QEMU_ARCH_VIRTIO_MMIO }, |
| 84 | { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_VIRTIO_CCW }, |
| 85 | { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_VIRTIO_PCI }, |
| 86 | { "virtio-balloon-device", "virtio-balloon", QEMU_ARCH_VIRTIO_MMIO }, |
| 87 | { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_VIRTIO_CCW }, |
| 88 | { "virtio-balloon-pci", "virtio-balloon", QEMU_ARCH_VIRTIO_PCI }, |
| 89 | { "virtio-blk-device", "virtio-blk", QEMU_ARCH_VIRTIO_MMIO }, |
| 90 | { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_VIRTIO_CCW }, |
| 91 | { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_VIRTIO_PCI }, |
| 92 | { "virtio-gpu-device", "virtio-gpu", QEMU_ARCH_VIRTIO_MMIO }, |
| 93 | { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_VIRTIO_CCW }, |
| 94 | { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_VIRTIO_PCI }, |
| 95 | { "virtio-gpu-gl-device", "virtio-gpu-gl", QEMU_ARCH_VIRTIO_MMIO }, |
| 96 | { "virtio-gpu-gl-pci", "virtio-gpu-gl", QEMU_ARCH_VIRTIO_PCI }, |
| 97 | { "virtio-gpu-rutabaga-device", "virtio-gpu-rutabaga", |
| 98 | QEMU_ARCH_VIRTIO_MMIO }, |
| 99 | { "virtio-gpu-rutabaga-pci", "virtio-gpu-rutabaga", QEMU_ARCH_VIRTIO_PCI }, |
| 100 | { "virtio-input-host-device", "virtio-input-host", QEMU_ARCH_VIRTIO_MMIO }, |
| 101 | { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_VIRTIO_CCW }, |
| 102 | { "virtio-input-host-pci", "virtio-input-host", QEMU_ARCH_VIRTIO_PCI }, |
| 103 | { "virtio-iommu-pci", "virtio-iommu", QEMU_ARCH_VIRTIO_PCI }, |
| 104 | { "virtio-keyboard-device", "virtio-keyboard", QEMU_ARCH_VIRTIO_MMIO }, |
| 105 | { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_VIRTIO_CCW }, |
| 106 | { "virtio-keyboard-pci", "virtio-keyboard", QEMU_ARCH_VIRTIO_PCI }, |
| 107 | { "virtio-mouse-device", "virtio-mouse", QEMU_ARCH_VIRTIO_MMIO }, |
| 108 | { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_VIRTIO_CCW }, |
| 109 | { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_VIRTIO_PCI }, |
| 110 | { "virtio-net-device", "virtio-net", QEMU_ARCH_VIRTIO_MMIO }, |
| 111 | { "virtio-net-ccw", "virtio-net", QEMU_ARCH_VIRTIO_CCW }, |
| 112 | { "virtio-net-pci", "virtio-net", QEMU_ARCH_VIRTIO_PCI }, |
| 113 | { "virtio-rng-device", "virtio-rng", QEMU_ARCH_VIRTIO_MMIO }, |
| 114 | { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_VIRTIO_CCW }, |
| 115 | { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_VIRTIO_PCI }, |
| 116 | { "virtio-scsi-device", "virtio-scsi", QEMU_ARCH_VIRTIO_MMIO }, |
| 117 | { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_VIRTIO_CCW }, |
| 118 | { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_VIRTIO_PCI }, |
| 119 | { "virtio-serial-device", "virtio-serial", QEMU_ARCH_VIRTIO_MMIO }, |
| 120 | { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_VIRTIO_CCW }, |
| 121 | { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_VIRTIO_PCI}, |
| 122 | { "virtio-sound-device", "virtio-sound", QEMU_ARCH_VIRTIO_MMIO }, |
| 123 | { "virtio-sound-pci", "virtio-sound", QEMU_ARCH_VIRTIO_PCI }, |
| 124 | { "virtio-tablet-device", "virtio-tablet", QEMU_ARCH_VIRTIO_MMIO }, |
| 125 | { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_VIRTIO_CCW }, |
| 126 | { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_VIRTIO_PCI }, |
| 127 | { } |
| 128 | }; |
| 129 | |
| 130 | static const char *qdev_class_get_alias(DeviceClass *dc) |
| 131 | { |
| 132 | const char *typename = object_class_get_name(OBJECT_CLASS(dc)); |
| 133 | int i; |
| 134 | |
| 135 | for (i = 0; qdev_alias_table[i].typename; i++) { |
| 136 | if (qdev_alias_table[i].arch_mask && |
| 137 | !qemu_arch_available(qdev_alias_table[i].arch_mask)) { |
| 138 | continue; |
| 139 | } |
| 140 | |
| 141 | if (strcmp(qdev_alias_table[i].typename, typename) == 0) { |
| 142 | return qdev_alias_table[i].alias; |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | return NULL; |
| 147 | } |
| 148 | |
| 149 | static bool qdev_class_has_alias(DeviceClass *dc) |
| 150 | { |
| 151 | return (qdev_class_get_alias(dc) != NULL); |
| 152 | } |
| 153 | |
| 154 | static void qdev_print_devinfo(DeviceClass *dc) |
| 155 | { |
| 156 | qemu_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc))); |
| 157 | if (dc->bus_type) { |
| 158 | qemu_printf(", bus %s", dc->bus_type); |
| 159 | } |
| 160 | if (qdev_class_has_alias(dc)) { |
| 161 | qemu_printf(", alias \"%s\"", qdev_class_get_alias(dc)); |
| 162 | } |
| 163 | if (dc->desc) { |
| 164 | qemu_printf(", desc \"%s\"", dc->desc); |
| 165 | } |
| 166 | if (!dc->user_creatable) { |
| 167 | qemu_printf(", no-user"); |
| 168 | } |
| 169 | qemu_printf("\n"); |
| 170 | } |
| 171 | |
| 172 | static void qdev_print_devinfos(bool show_no_user) |
| 173 | { |
| 174 | static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = { |
| 175 | [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub", |
| 176 | [DEVICE_CATEGORY_USB] = "USB", |
| 177 | [DEVICE_CATEGORY_STORAGE] = "Storage", |
| 178 | [DEVICE_CATEGORY_NETWORK] = "Network", |
| 179 | [DEVICE_CATEGORY_INPUT] = "Input", |
| 180 | [DEVICE_CATEGORY_DISPLAY] = "Display", |
| 181 | [DEVICE_CATEGORY_SOUND] = "Sound", |
| 182 | [DEVICE_CATEGORY_MISC] = "Misc", |
| 183 | [DEVICE_CATEGORY_CPU] = "CPU", |
| 184 | [DEVICE_CATEGORY_WATCHDOG]= "Watchdog", |
| 185 | [DEVICE_CATEGORY_MAX] = "Uncategorized", |
| 186 | }; |
| 187 | GSList *list, *elt; |
| 188 | int i; |
| 189 | bool cat_printed; |
| 190 | |
| 191 | module_load_qom_all(); |
| 192 | list = object_class_get_list_sorted(TYPE_DEVICE, false); |
| 193 | |
| 194 | for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) { |
| 195 | cat_printed = false; |
| 196 | for (elt = list; elt; elt = elt->next) { |
| 197 | DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data, |
| 198 | TYPE_DEVICE); |
| 199 | if ((i < DEVICE_CATEGORY_MAX |
| 200 | ? !test_bit(i, dc->categories) |
| 201 | : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX)) |
| 202 | || (!show_no_user |
| 203 | && !dc->user_creatable)) { |
| 204 | continue; |
| 205 | } |
| 206 | if (!cat_printed) { |
| 207 | qemu_printf("%s%s devices:\n", i ? "\n" : "", cat_name[i]); |
| 208 | cat_printed = true; |
| 209 | } |
| 210 | qdev_print_devinfo(dc); |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | g_slist_free(list); |
| 215 | } |
| 216 | |
| 217 | static const char *find_typename_by_alias(const char *alias) |
| 218 | { |
| 219 | int i; |
| 220 | |
| 221 | for (i = 0; qdev_alias_table[i].alias; i++) { |
| 222 | if (qdev_alias_table[i].arch_mask && |
| 223 | !qemu_arch_available(qdev_alias_table[i].arch_mask)) { |
| 224 | continue; |
| 225 | } |
| 226 | |
| 227 | if (strcmp(qdev_alias_table[i].alias, alias) == 0) { |
| 228 | return qdev_alias_table[i].typename; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | return NULL; |
| 233 | } |
| 234 | |
| 235 | static DeviceClass *qdev_get_device_class(const char **driver, Error **errp) |
| 236 | { |
| 237 | ObjectClass *oc; |
| 238 | DeviceClass *dc; |
| 239 | const char *original_name = *driver; |
| 240 | |
| 241 | oc = module_object_class_by_name(*driver); |
| 242 | if (!oc) { |
| 243 | const char *typename = find_typename_by_alias(*driver); |
| 244 | |
| 245 | if (typename) { |
| 246 | *driver = typename; |
| 247 | oc = module_object_class_by_name(*driver); |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) { |
| 252 | if (*driver != original_name) { |
| 253 | error_setg(errp, "'%s' (alias '%s') is not a valid device model" |
| 254 | " name", original_name, *driver); |
| 255 | } else { |
| 256 | error_setg(errp, "'%s' is not a valid device model name", *driver); |
| 257 | } |
| 258 | return NULL; |
| 259 | } |
| 260 | |
| 261 | if (object_class_is_abstract(oc)) { |
| 262 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", |
| 263 | "a non-abstract device type"); |
| 264 | return NULL; |
| 265 | } |
| 266 | |
| 267 | dc = DEVICE_CLASS(oc); |
| 268 | if (!dc->user_creatable) { |
| 269 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", |
| 270 | "a pluggable device type"); |
| 271 | return NULL; |
| 272 | } |
| 273 | |
| 274 | if (object_class_dynamic_cast(oc, TYPE_SYS_BUS_DEVICE)) { |
| 275 | /* sysbus devices need to be allowed by the machine */ |
| 276 | MachineClass *mc = MACHINE_CLASS(object_get_class(qdev_get_machine())); |
| 277 | if (!device_type_is_dynamic_sysbus(mc, *driver)) { |
| 278 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", |
| 279 | "a dynamic sysbus device type for the machine"); |
| 280 | return NULL; |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | return dc; |
| 285 | } |
| 286 | |
| 287 | |
| 288 | int qdev_device_help(QemuOpts *opts) |
| 289 | { |
| 290 | Error *local_err = NULL; |
| 291 | const char *driver; |
| 292 | ObjectPropertyInfoList *prop_list; |
| 293 | ObjectPropertyInfoList *prop; |
| 294 | GPtrArray *array; |
| 295 | int i; |
| 296 | |
| 297 | driver = qemu_opt_get(opts, "driver"); |
| 298 | if (driver && is_help_option(driver)) { |
| 299 | qdev_print_devinfos(false); |
| 300 | return 1; |
| 301 | } |
| 302 | |
| 303 | if (!driver || !qemu_opt_has_help_opt(opts)) { |
| 304 | return 0; |
| 305 | } |
| 306 | |
| 307 | if (!object_class_by_name(driver)) { |
| 308 | const char *typename = find_typename_by_alias(driver); |
| 309 | |
| 310 | if (typename) { |
| 311 | driver = typename; |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | prop_list = qmp_device_list_properties(driver, &local_err); |
| 316 | if (local_err) { |
| 317 | goto error; |
| 318 | } |
| 319 | |
| 320 | if (prop_list) { |
| 321 | qemu_printf("%s options:\n", driver); |
| 322 | } else { |
| 323 | qemu_printf("There are no options for %s.\n", driver); |
| 324 | } |
| 325 | array = g_ptr_array_new(); |
| 326 | for (prop = prop_list; prop; prop = prop->next) { |
| 327 | g_ptr_array_add(array, |
| 328 | object_property_help(prop->value->name, |
| 329 | prop->value->type, |
| 330 | prop->value->default_value, |
| 331 | prop->value->description)); |
| 332 | } |
| 333 | g_ptr_array_sort(array, (GCompareFunc)qemu_pstrcmp0); |
| 334 | for (i = 0; i < array->len; i++) { |
| 335 | qemu_printf("%s\n", (char *)array->pdata[i]); |
| 336 | } |
| 337 | g_ptr_array_set_free_func(array, g_free); |
| 338 | g_ptr_array_free(array, true); |
| 339 | qapi_free_ObjectPropertyInfoList(prop_list); |
| 340 | return 1; |
| 341 | |
| 342 | error: |
| 343 | error_report_err(local_err); |
| 344 | return 1; |
| 345 | } |
| 346 | |
| 347 | static Object *qdev_get_peripheral(void) |
| 348 | { |
| 349 | static Object *dev; |
| 350 | |
| 351 | if (dev == NULL) { |
| 352 | dev = machine_get_container("peripheral"); |
| 353 | } |
| 354 | |
| 355 | return dev; |
| 356 | } |
| 357 | |
| 358 | static Object *qdev_get_peripheral_anon(void) |
| 359 | { |
| 360 | static Object *dev; |
| 361 | |
| 362 | if (dev == NULL) { |
| 363 | dev = machine_get_container("peripheral-anon"); |
| 364 | } |
| 365 | |
| 366 | return dev; |
| 367 | } |
| 368 | |
| 369 | static void qbus_error_append_bus_list_hint(DeviceState *dev, |
| 370 | Error *const *errp) |
| 371 | { |
| 372 | BusState *child; |
| 373 | const char *sep = " "; |
| 374 | |
| 375 | error_append_hint(errp, "child buses at \"%s\":", |
| 376 | dev->id ? dev->id : object_get_typename(OBJECT(dev))); |
| 377 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
| 378 | error_append_hint(errp, "%s\"%s\"", sep, child->name); |
| 379 | sep = ", "; |
| 380 | } |
| 381 | error_append_hint(errp, "\n"); |
| 382 | } |
| 383 | |
| 384 | static void qbus_error_append_dev_list_hint(BusState *bus, |
| 385 | Error *const *errp) |
| 386 | { |
| 387 | BusChild *kid; |
| 388 | const char *sep = " "; |
| 389 | |
| 390 | error_append_hint(errp, "devices at \"%s\":", bus->name); |
| 391 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
| 392 | DeviceState *dev = kid->child; |
| 393 | error_append_hint(errp, "%s\"%s\"", sep, |
| 394 | object_get_typename(OBJECT(dev))); |
| 395 | if (dev->id) { |
| 396 | error_append_hint(errp, "/\"%s\"", dev->id); |
| 397 | } |
| 398 | sep = ", "; |
| 399 | } |
| 400 | error_append_hint(errp, "\n"); |
| 401 | } |
| 402 | |
| 403 | static BusState *qbus_find_bus(DeviceState *dev, char *elem) |
| 404 | { |
| 405 | BusState *child; |
| 406 | |
| 407 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
| 408 | if (strcmp(child->name, elem) == 0) { |
| 409 | return child; |
| 410 | } |
| 411 | } |
| 412 | return NULL; |
| 413 | } |
| 414 | |
| 415 | static DeviceState *qbus_find_dev(BusState *bus, char *elem) |
| 416 | { |
| 417 | BusChild *kid; |
| 418 | |
| 419 | /* |
| 420 | * try to match in order: |
| 421 | * (1) instance id, if present |
| 422 | * (2) driver name |
| 423 | * (3) driver alias, if present |
| 424 | */ |
| 425 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
| 426 | DeviceState *dev = kid->child; |
| 427 | if (dev->id && strcmp(dev->id, elem) == 0) { |
| 428 | return dev; |
| 429 | } |
| 430 | } |
| 431 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
| 432 | DeviceState *dev = kid->child; |
| 433 | if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) { |
| 434 | return dev; |
| 435 | } |
| 436 | } |
| 437 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
| 438 | DeviceState *dev = kid->child; |
| 439 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
| 440 | |
| 441 | if (qdev_class_has_alias(dc) && |
| 442 | strcmp(qdev_class_get_alias(dc), elem) == 0) { |
| 443 | return dev; |
| 444 | } |
| 445 | } |
| 446 | return NULL; |
| 447 | } |
| 448 | |
| 449 | static inline bool qbus_is_full(BusState *bus) |
| 450 | { |
| 451 | BusClass *bus_class; |
| 452 | |
| 453 | if (bus->full) { |
| 454 | return true; |
| 455 | } |
| 456 | bus_class = BUS_GET_CLASS(bus); |
| 457 | return bus_class->max_dev && bus->num_children >= bus_class->max_dev; |
| 458 | } |
| 459 | |
| 460 | /* |
| 461 | * Search the tree rooted at @bus for a bus. |
| 462 | * If @name, search for a bus with that name. Note that bus names |
| 463 | * need not be unique. Yes, that's screwed up. |
| 464 | * Else search for a bus that is a subtype of @bus_typename. |
| 465 | * If more than one exists, prefer one that can take another device. |
| 466 | * Return the bus if found, else %NULL. |
| 467 | */ |
| 468 | static BusState *qbus_find_recursive(BusState *bus, const char *name, |
| 469 | const char *bus_typename) |
| 470 | { |
| 471 | BusChild *kid; |
| 472 | BusState *pick, *child, *ret; |
| 473 | bool match; |
| 474 | |
| 475 | assert(name || bus_typename); |
| 476 | if (name) { |
| 477 | match = !strcmp(bus->name, name); |
| 478 | } else { |
| 479 | match = !!object_dynamic_cast(OBJECT(bus), bus_typename); |
| 480 | } |
| 481 | |
| 482 | if (match && !qbus_is_full(bus)) { |
| 483 | return bus; /* root matches and isn't full */ |
| 484 | } |
| 485 | |
| 486 | pick = match ? bus : NULL; |
| 487 | |
| 488 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
| 489 | DeviceState *dev = kid->child; |
| 490 | QLIST_FOREACH(child, &dev->child_bus, sibling) { |
| 491 | ret = qbus_find_recursive(child, name, bus_typename); |
| 492 | if (ret && !qbus_is_full(ret)) { |
| 493 | return ret; /* a descendant matches and isn't full */ |
| 494 | } |
| 495 | if (ret && !pick) { |
| 496 | pick = ret; |
| 497 | } |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | /* root or a descendant matches, but is full */ |
| 502 | return pick; |
| 503 | } |
| 504 | |
| 505 | static BusState *qbus_find(const char *path, Error **errp) |
| 506 | { |
| 507 | DeviceState *dev; |
| 508 | BusState *bus; |
| 509 | char elem[128]; |
| 510 | int pos, len; |
| 511 | |
| 512 | /* find start element */ |
| 513 | if (path[0] == '/') { |
| 514 | bus = sysbus_get_default(); |
| 515 | pos = 0; |
| 516 | } else { |
| 517 | if (sscanf(path, "%127[^/]%n", elem, &len) != 1) { |
| 518 | assert(!path[0]); |
| 519 | elem[0] = len = 0; |
| 520 | } |
| 521 | bus = qbus_find_recursive(sysbus_get_default(), elem, NULL); |
| 522 | if (!bus) { |
| 523 | error_setg(errp, "Bus '%s' not found", elem); |
| 524 | return NULL; |
| 525 | } |
| 526 | pos = len; |
| 527 | } |
| 528 | |
| 529 | for (;;) { |
| 530 | assert(path[pos] == '/' || !path[pos]); |
| 531 | while (path[pos] == '/') { |
| 532 | pos++; |
| 533 | } |
| 534 | if (path[pos] == '\0') { |
| 535 | break; |
| 536 | } |
| 537 | |
| 538 | /* find device */ |
| 539 | if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
| 540 | g_assert_not_reached(); |
| 541 | elem[0] = len = 0; |
| 542 | } |
| 543 | pos += len; |
| 544 | dev = qbus_find_dev(bus, elem); |
| 545 | if (!dev) { |
| 546 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 547 | "Device '%s' not found", elem); |
| 548 | qbus_error_append_dev_list_hint(bus, errp); |
| 549 | return NULL; |
| 550 | } |
| 551 | |
| 552 | assert(path[pos] == '/' || !path[pos]); |
| 553 | while (path[pos] == '/') { |
| 554 | pos++; |
| 555 | } |
| 556 | if (path[pos] == '\0') { |
| 557 | /* last specified element is a device. If it has exactly |
| 558 | * one child bus accept it nevertheless */ |
| 559 | if (dev->num_child_bus == 1) { |
| 560 | bus = QLIST_FIRST(&dev->child_bus); |
| 561 | break; |
| 562 | } |
| 563 | if (dev->num_child_bus) { |
| 564 | error_setg(errp, "Device '%s' has multiple child buses", |
| 565 | elem); |
| 566 | qbus_error_append_bus_list_hint(dev, errp); |
| 567 | } else { |
| 568 | error_setg(errp, "Device '%s' has no child bus", elem); |
| 569 | } |
| 570 | return NULL; |
| 571 | } |
| 572 | |
| 573 | /* find bus */ |
| 574 | if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
| 575 | g_assert_not_reached(); |
| 576 | elem[0] = len = 0; |
| 577 | } |
| 578 | pos += len; |
| 579 | bus = qbus_find_bus(dev, elem); |
| 580 | if (!bus) { |
| 581 | error_setg(errp, "Bus '%s' not found", elem); |
| 582 | qbus_error_append_bus_list_hint(dev, errp); |
| 583 | return NULL; |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | if (qbus_is_full(bus)) { |
| 588 | error_setg(errp, "Bus '%s' is full", path); |
| 589 | return NULL; |
| 590 | } |
| 591 | return bus; |
| 592 | } |
| 593 | |
| 594 | /* Takes ownership of @id, will be freed when deleting the device */ |
| 595 | const char *qdev_set_id(DeviceState *dev, char *id, Error **errp) |
| 596 | { |
| 597 | ObjectProperty *prop; |
| 598 | |
| 599 | assert(!dev->id && !dev->realized); |
| 600 | |
| 601 | /* |
| 602 | * object_property_[try_]add_child() below will assert the device |
| 603 | * has no parent |
| 604 | */ |
| 605 | if (id) { |
| 606 | if (!id_wellformed(id)) { |
| 607 | error_setg(errp, "Invalid qdev ID '%s'", id); |
| 608 | goto err; |
| 609 | } |
| 610 | prop = object_property_try_add_child(qdev_get_peripheral(), id, |
| 611 | OBJECT(dev), NULL); |
| 612 | if (prop) { |
| 613 | dev->id = id; |
| 614 | } else { |
| 615 | error_setg(errp, "Duplicate device ID '%s'", id); |
| 616 | goto err; |
| 617 | } |
| 618 | } else { |
| 619 | static int anon_count; |
| 620 | gchar *name = g_strdup_printf("device[%d]", anon_count++); |
| 621 | prop = object_property_add_child(qdev_get_peripheral_anon(), name, |
| 622 | OBJECT(dev)); |
| 623 | g_free(name); |
| 624 | } |
| 625 | |
| 626 | return prop->name; |
| 627 | |
| 628 | err: |
| 629 | g_free(id); |
| 630 | return NULL; |
| 631 | } |
| 632 | |
| 633 | BusState *qdev_find_default_bus(DeviceClass *dc, Error **errp) |
| 634 | { |
| 635 | BusState *bus = NULL; |
| 636 | |
| 637 | assert(dc->bus_type != NULL); |
| 638 | bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type); |
| 639 | if (!bus) { |
| 640 | error_setg(errp, "No '%s' bus found for device '%s'", |
| 641 | dc->bus_type, object_class_get_name(OBJECT_CLASS(dc))); |
| 642 | return NULL; |
| 643 | } |
| 644 | if (qbus_is_full(bus)) { |
| 645 | error_setg(errp, "A '%s' bus was found but is full", dc->bus_type); |
| 646 | return NULL; |
| 647 | } |
| 648 | |
| 649 | return bus; |
| 650 | } |
| 651 | |
| 652 | DeviceState *qdev_device_add_from_qdict(const QDict *opts, |
| 653 | bool from_json, Error **errp) |
| 654 | { |
| 655 | ERRP_GUARD(); |
| 656 | DeviceClass *dc; |
| 657 | const char *driver, *path; |
| 658 | char *id; |
| 659 | DeviceState *dev; |
| 660 | BusState *bus = NULL; |
| 661 | QDict *properties; |
| 662 | |
| 663 | driver = qdict_get_try_str(opts, "driver"); |
| 664 | if (!driver) { |
| 665 | error_setg(errp, QERR_MISSING_PARAMETER, "driver"); |
| 666 | return NULL; |
| 667 | } |
| 668 | |
| 669 | /* find driver */ |
| 670 | dc = qdev_get_device_class(&driver, errp); |
| 671 | if (!dc) { |
| 672 | return NULL; |
| 673 | } |
| 674 | |
| 675 | /* find bus */ |
| 676 | path = qdict_get_try_str(opts, "bus"); |
| 677 | if (path != NULL) { |
| 678 | bus = qbus_find(path, errp); |
| 679 | if (!bus) { |
| 680 | return NULL; |
| 681 | } |
| 682 | if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) { |
| 683 | error_setg(errp, "Device '%s' can't go on %s bus", |
| 684 | driver, object_get_typename(OBJECT(bus))); |
| 685 | return NULL; |
| 686 | } |
| 687 | } else if (dc->bus_type != NULL) { |
| 688 | bus = qdev_find_default_bus(dc, errp); |
| 689 | if (!bus) { |
| 690 | return NULL; |
| 691 | } |
| 692 | } |
| 693 | |
| 694 | if (qdev_should_hide_device(opts, from_json, errp)) { |
| 695 | if (bus && !qbus_is_hotpluggable(bus)) { |
| 696 | error_setg(errp, "Bus '%s' does not support hotplugging", |
| 697 | bus->name); |
| 698 | } |
| 699 | return NULL; |
| 700 | } else if (*errp) { |
| 701 | return NULL; |
| 702 | } |
| 703 | |
| 704 | if (migration_is_running()) { |
| 705 | error_setg(errp, "device_add not allowed while migrating"); |
| 706 | return NULL; |
| 707 | } |
| 708 | |
| 709 | /* create device */ |
| 710 | dev = qdev_new(driver); |
| 711 | |
| 712 | /* Check whether the hotplug is allowed by the machine */ |
| 713 | if (phase_check(PHASE_MACHINE_READY) && |
| 714 | !qdev_hotplug_allowed(dev, bus, errp)) { |
| 715 | goto err_del_dev; |
| 716 | } |
| 717 | |
| 718 | /* |
| 719 | * set dev's parent and register its id. |
| 720 | * If it fails it means the id is already taken. |
| 721 | */ |
| 722 | id = g_strdup(qdict_get_try_str(opts, "id")); |
| 723 | if (!qdev_set_id(dev, id, errp)) { |
| 724 | goto err_del_dev; |
| 725 | } |
| 726 | |
| 727 | /* set properties */ |
| 728 | properties = qdict_clone_shallow(opts); |
| 729 | qdict_del(properties, "driver"); |
| 730 | qdict_del(properties, "bus"); |
| 731 | qdict_del(properties, "id"); |
| 732 | |
| 733 | object_set_props_from_keyval(&dev->parent_obj, properties, from_json, |
| 734 | errp); |
| 735 | qobject_unref(properties); |
| 736 | if (*errp) { |
| 737 | goto err_del_dev; |
| 738 | } |
| 739 | |
| 740 | if (!qdev_realize(dev, bus, errp)) { |
| 741 | goto err_del_dev; |
| 742 | } |
| 743 | return dev; |
| 744 | |
| 745 | err_del_dev: |
| 746 | object_unparent(OBJECT(dev)); |
| 747 | object_unref(OBJECT(dev)); |
| 748 | |
| 749 | return NULL; |
| 750 | } |
| 751 | |
| 752 | /* Takes ownership of @opts on success */ |
| 753 | DeviceState *qdev_device_add(QemuOpts *opts, Error **errp) |
| 754 | { |
| 755 | QDict *qdict = qemu_opts_to_qdict(opts, NULL); |
| 756 | DeviceState *ret; |
| 757 | |
| 758 | ret = qdev_device_add_from_qdict(qdict, false, errp); |
| 759 | if (ret) { |
| 760 | qemu_opts_del(opts); |
| 761 | } |
| 762 | qobject_unref(qdict); |
| 763 | return ret; |
| 764 | } |
| 765 | |
| 766 | #ifdef CONFIG_HMP |
| 767 | #define qdev_printf(fmt, ...) \ |
| 768 | monitor_hmp_printf(hmp, "%*s" fmt, indent, "", ## __VA_ARGS__) |
| 769 | |
| 770 | static void qdev_print_props(MonitorHMP *hmp, DeviceState *dev, DeviceClass *dc, |
| 771 | int indent) |
| 772 | { |
| 773 | for (int i = 0, n = dc->props_count_; i < n; ++i) { |
| 774 | const Property *prop = &dc->props_[i]; |
| 775 | char *value; |
| 776 | |
| 777 | if (prop->info->print) { |
| 778 | value = prop->info->print(OBJECT(dev), prop); |
| 779 | } else { |
| 780 | value = object_property_print(OBJECT(dev), prop->name, true, |
| 781 | NULL); |
| 782 | } |
| 783 | |
| 784 | if (!value) { |
| 785 | continue; |
| 786 | } |
| 787 | |
| 788 | qdev_printf("%s = %s\n", prop->name, |
| 789 | *value ? value : "<null>"); |
| 790 | g_free(value); |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | static void bus_print_dev(BusState *bus, MonitorHMP *hmp, DeviceState *dev, int indent) |
| 795 | { |
| 796 | BusClass *bc = BUS_GET_CLASS(bus); |
| 797 | |
| 798 | if (bc->print_dev) { |
| 799 | bc->print_dev(hmp, dev, indent); |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | static void qdev_print(MonitorHMP *hmp, DeviceState *dev, int indent) |
| 804 | { |
| 805 | ObjectClass *class; |
| 806 | NamedGPIOList *ngl; |
| 807 | NamedClockList *ncl; |
| 808 | |
| 809 | QLIST_FOREACH(ngl, &dev->gpios, node) { |
| 810 | if (ngl->num_in) { |
| 811 | qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "", |
| 812 | ngl->num_in); |
| 813 | } |
| 814 | if (ngl->num_out) { |
| 815 | qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "", |
| 816 | ngl->num_out); |
| 817 | } |
| 818 | } |
| 819 | QLIST_FOREACH(ncl, &dev->clocks, node) { |
| 820 | g_autofree char *freq_str = clock_display_freq(ncl->clock); |
| 821 | qdev_printf("clock-%s%s \"%s\" freq_hz=%s\n", |
| 822 | ncl->output ? "out" : "in", |
| 823 | ncl->alias ? " (alias)" : "", |
| 824 | ncl->name, freq_str); |
| 825 | } |
| 826 | class = object_get_class(OBJECT(dev)); |
| 827 | do { |
| 828 | qdev_print_props(hmp, dev, DEVICE_CLASS(class), indent); |
| 829 | class = object_class_get_parent(class); |
| 830 | } while (class != object_class_by_name(TYPE_DEVICE)); |
| 831 | bus_print_dev(dev->parent_bus, hmp, dev, indent); |
| 832 | } |
| 833 | |
| 834 | static void qbus_print(MonitorHMP *hmp, BusState *bus, int indent, bool details) |
| 835 | { |
| 836 | BusChild *kid; |
| 837 | |
| 838 | qdev_printf("bus: %s\n", bus->name); |
| 839 | indent += 2; |
| 840 | qdev_printf("type %s\n", object_get_typename(OBJECT(bus))); |
| 841 | QTAILQ_FOREACH(kid, &bus->children, sibling) { |
| 842 | BusState *child_bus; |
| 843 | DeviceState *dev = kid->child; |
| 844 | qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)), |
| 845 | dev->id ? dev->id : ""); |
| 846 | if (details) { |
| 847 | qdev_print(hmp, dev, indent + 2); |
| 848 | } |
| 849 | QLIST_FOREACH(child_bus, &dev->child_bus, sibling) { |
| 850 | qbus_print(hmp, child_bus, indent + 2, details); |
| 851 | } |
| 852 | } |
| 853 | } |
| 854 | #undef qdev_printf |
| 855 | |
| 856 | void hmp_info_qtree(MonitorHMP *hmp, const QDict *qdict) |
| 857 | { |
| 858 | bool details = !qdict_get_try_bool(qdict, "brief", false); |
| 859 | |
| 860 | if (sysbus_get_default()) { |
| 861 | qbus_print(hmp, sysbus_get_default(), 0, details); |
| 862 | } |
| 863 | } |
| 864 | |
| 865 | void hmp_info_qdm(MonitorHMP *hmp, const QDict *qdict) |
| 866 | { |
| 867 | qdev_print_devinfos(true); |
| 868 | } |
| 869 | #endif /* CONFIG_HMP */ |
| 870 | |
| 871 | void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp) |
| 872 | { |
| 873 | DeviceState *dev; |
| 874 | |
| 875 | dev = qdev_device_add_from_qdict(qdict, true, errp); |
| 876 | if (!dev) { |
| 877 | /* |
| 878 | * Drain all pending RCU callbacks. This is done because |
| 879 | * some bus related operations can delay a device removal |
| 880 | * (in this case this can happen if device is added and then |
| 881 | * removed due to a configuration error) |
| 882 | * to a RCU callback, but user might expect that this interface |
| 883 | * will finish its job completely once qmp command returns result |
| 884 | * to the user |
| 885 | */ |
| 886 | drain_call_rcu(); |
| 887 | } |
| 888 | object_unref(OBJECT(dev)); |
| 889 | } |
| 890 | |
| 891 | /* |
| 892 | * Note that creating new APIs using error classes other than GenericError is |
| 893 | * not recommended. Set use_generic_error=true for new interfaces. |
| 894 | */ |
| 895 | static DeviceState *find_device_state(const char *id, bool use_generic_error, |
| 896 | Error **errp) |
| 897 | { |
| 898 | Object *obj = object_resolve_path_at(qdev_get_peripheral(), id); |
| 899 | DeviceState *dev; |
| 900 | |
| 901 | if (!obj) { |
| 902 | error_set(errp, |
| 903 | (use_generic_error ? |
| 904 | ERROR_CLASS_GENERIC_ERROR : ERROR_CLASS_DEVICE_NOT_FOUND), |
| 905 | "Device '%s' not found", id); |
| 906 | return NULL; |
| 907 | } |
| 908 | |
| 909 | dev = (DeviceState *)object_dynamic_cast(obj, TYPE_DEVICE); |
| 910 | if (!dev) { |
| 911 | error_setg(errp, "%s is not a device", id); |
| 912 | return NULL; |
| 913 | } |
| 914 | |
| 915 | return dev; |
| 916 | } |
| 917 | |
| 918 | void qdev_unplug(DeviceState *dev, Error **errp) |
| 919 | { |
| 920 | HotplugHandler *hotplug_ctrl; |
| 921 | HotplugHandlerClass *hdc; |
| 922 | Error *local_err = NULL; |
| 923 | |
| 924 | if (!qdev_hotunplug_allowed(dev, errp)) { |
| 925 | return; |
| 926 | } |
| 927 | |
| 928 | if (migration_is_running() && !dev->allow_unplug_during_migration) { |
| 929 | error_setg(errp, "device_del not allowed while migrating"); |
| 930 | return; |
| 931 | } |
| 932 | |
| 933 | qdev_hot_removed = true; |
| 934 | |
| 935 | hotplug_ctrl = qdev_get_hotplug_handler(dev); |
| 936 | /* hotpluggable device MUST have HotplugHandler, if it doesn't |
| 937 | * then something is very wrong with it */ |
| 938 | g_assert(hotplug_ctrl); |
| 939 | |
| 940 | /* If device supports async unplug just request it to be done, |
| 941 | * otherwise just remove it synchronously */ |
| 942 | hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl); |
| 943 | if (hdc->unplug_request) { |
| 944 | hotplug_handler_unplug_request(hotplug_ctrl, dev, &local_err); |
| 945 | } else { |
| 946 | hotplug_handler_unplug(hotplug_ctrl, dev, &local_err); |
| 947 | if (!local_err) { |
| 948 | object_unparent(OBJECT(dev)); |
| 949 | } |
| 950 | } |
| 951 | error_propagate(errp, local_err); |
| 952 | } |
| 953 | |
| 954 | void qmp_device_del(const char *id, Error **errp) |
| 955 | { |
| 956 | DeviceState *dev = find_device_state(id, false, errp); |
| 957 | if (dev != NULL) { |
| 958 | if (dev->pending_deleted_event && |
| 959 | (dev->pending_deleted_expires_ms == 0 || |
| 960 | dev->pending_deleted_expires_ms > qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL))) { |
| 961 | error_setg(errp, "Device %s is already in the " |
| 962 | "process of unplug", id); |
| 963 | return; |
| 964 | } |
| 965 | |
| 966 | qdev_unplug(dev, errp); |
| 967 | } |
| 968 | } |
| 969 | |
| 970 | int qdev_sync_config(DeviceState *dev, Error **errp) |
| 971 | { |
| 972 | DeviceClass *dc = DEVICE_GET_CLASS(dev); |
| 973 | |
| 974 | if (!dc->sync_config) { |
| 975 | error_setg(errp, "device-sync-config is not supported for '%s'", |
| 976 | object_get_typename(OBJECT(dev))); |
| 977 | return -ENOTSUP; |
| 978 | } |
| 979 | |
| 980 | return dc->sync_config(dev, errp); |
| 981 | } |
| 982 | |
| 983 | void qmp_device_sync_config(const char *id, Error **errp) |
| 984 | { |
| 985 | DeviceState *dev; |
| 986 | |
| 987 | /* |
| 988 | * During migration there is a race between syncing`configuration |
| 989 | * and migrating it (if migrate first, that target would get |
| 990 | * outdated version), so let's just not allow it. |
| 991 | */ |
| 992 | |
| 993 | if (migration_is_running()) { |
| 994 | error_setg(errp, "Config synchronization is not allowed " |
| 995 | "during migration"); |
| 996 | return; |
| 997 | } |
| 998 | |
| 999 | dev = find_device_state(id, true, errp); |
| 1000 | if (!dev) { |
| 1001 | return; |
| 1002 | } |
| 1003 | |
| 1004 | qdev_sync_config(dev, errp); |
| 1005 | } |
| 1006 | |
| 1007 | #ifdef CONFIG_HMP |
| 1008 | void hmp_device_add(MonitorHMP *hmp, const QDict *qdict) |
| 1009 | { |
| 1010 | Error *err = NULL; |
| 1011 | QemuOpts *opts; |
| 1012 | DeviceState *dev; |
| 1013 | |
| 1014 | opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &err); |
| 1015 | if (!opts) { |
| 1016 | goto out; |
| 1017 | } |
| 1018 | if (qdev_device_help(opts)) { |
| 1019 | qemu_opts_del(opts); |
| 1020 | return; |
| 1021 | } |
| 1022 | dev = qdev_device_add(opts, &err); |
| 1023 | if (!dev) { |
| 1024 | /* |
| 1025 | * Drain all pending RCU callbacks. This is done because |
| 1026 | * some bus related operations can delay a device removal |
| 1027 | * (in this case this can happen if device is added and then |
| 1028 | * removed due to a configuration error) |
| 1029 | * to a RCU callback, but user might expect that this interface |
| 1030 | * will finish its job completely once qmp command returns result |
| 1031 | * to the user |
| 1032 | */ |
| 1033 | drain_call_rcu(); |
| 1034 | |
| 1035 | qemu_opts_del(opts); |
| 1036 | } |
| 1037 | object_unref(dev); |
| 1038 | out: |
| 1039 | hmp_handle_error(hmp, err); |
| 1040 | } |
| 1041 | |
| 1042 | void hmp_device_del(MonitorHMP *hmp, const QDict *qdict) |
| 1043 | { |
| 1044 | const char *id = qdict_get_str(qdict, "id"); |
| 1045 | Error *err = NULL; |
| 1046 | |
| 1047 | qmp_device_del(id, &err); |
| 1048 | hmp_handle_error(hmp, err); |
| 1049 | } |
| 1050 | #endif |
| 1051 | |
| 1052 | void device_add_completion(ReadLineState *rs, int nb_args, const char *str) |
| 1053 | { |
| 1054 | GSList *list, *elt; |
| 1055 | size_t len; |
| 1056 | |
| 1057 | if (nb_args != 2) { |
| 1058 | return; |
| 1059 | } |
| 1060 | |
| 1061 | len = strlen(str); |
| 1062 | readline_set_completion_index(rs, len); |
| 1063 | list = elt = object_class_get_list(TYPE_DEVICE, false); |
| 1064 | while (elt) { |
| 1065 | DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data, |
| 1066 | TYPE_DEVICE); |
| 1067 | |
| 1068 | if (dc->user_creatable) { |
| 1069 | readline_add_completion_of(rs, str, |
| 1070 | object_class_get_name(OBJECT_CLASS(dc))); |
| 1071 | } |
| 1072 | elt = elt->next; |
| 1073 | } |
| 1074 | g_slist_free(list); |
| 1075 | } |
| 1076 | |
| 1077 | static int qdev_add_hotpluggable_device(Object *obj, void *opaque) |
| 1078 | { |
| 1079 | GSList **list = opaque; |
| 1080 | DeviceState *dev = (DeviceState *)object_dynamic_cast(obj, TYPE_DEVICE); |
| 1081 | |
| 1082 | if (dev == NULL) { |
| 1083 | return 0; |
| 1084 | } |
| 1085 | |
| 1086 | if (dev->realized && object_property_get_bool(obj, "hotpluggable", NULL)) { |
| 1087 | *list = g_slist_append(*list, dev); |
| 1088 | } |
| 1089 | |
| 1090 | return 0; |
| 1091 | } |
| 1092 | |
| 1093 | static GSList *qdev_build_hotpluggable_device_list(Object *peripheral) |
| 1094 | { |
| 1095 | GSList *list = NULL; |
| 1096 | |
| 1097 | object_child_foreach(peripheral, qdev_add_hotpluggable_device, &list); |
| 1098 | |
| 1099 | return list; |
| 1100 | } |
| 1101 | |
| 1102 | static void peripheral_device_del_completion(ReadLineState *rs, |
| 1103 | const char *str) |
| 1104 | { |
| 1105 | Object *peripheral = machine_get_container("peripheral"); |
| 1106 | GSList *list, *item; |
| 1107 | |
| 1108 | list = qdev_build_hotpluggable_device_list(peripheral); |
| 1109 | if (!list) { |
| 1110 | return; |
| 1111 | } |
| 1112 | |
| 1113 | for (item = list; item; item = g_slist_next(item)) { |
| 1114 | DeviceState *dev = item->data; |
| 1115 | |
| 1116 | if (dev->id) { |
| 1117 | readline_add_completion_of(rs, str, dev->id); |
| 1118 | } |
| 1119 | } |
| 1120 | |
| 1121 | g_slist_free(list); |
| 1122 | } |
| 1123 | |
| 1124 | void device_del_completion(ReadLineState *rs, int nb_args, const char *str) |
| 1125 | { |
| 1126 | if (nb_args != 2) { |
| 1127 | return; |
| 1128 | } |
| 1129 | |
| 1130 | readline_set_completion_index(rs, strlen(str)); |
| 1131 | peripheral_device_del_completion(rs, str); |
| 1132 | } |
| 1133 | |
| 1134 | BlockBackend *blk_by_qdev_id(const char *id, Error **errp) |
| 1135 | { |
| 1136 | DeviceState *dev; |
| 1137 | BlockBackend *blk; |
| 1138 | |
| 1139 | GLOBAL_STATE_CODE(); |
| 1140 | |
| 1141 | dev = find_device_state(id, false, errp); |
| 1142 | if (dev == NULL) { |
| 1143 | return NULL; |
| 1144 | } |
| 1145 | |
| 1146 | blk = blk_by_dev(dev); |
| 1147 | if (!blk) { |
| 1148 | error_setg(errp, "Device does not have a block device backend"); |
| 1149 | } |
| 1150 | return blk; |
| 1151 | } |
| 1152 | |
| 1153 | QemuOptsList qemu_device_opts = { |
| 1154 | .name = "device", |
| 1155 | .implied_opt_name = "driver", |
| 1156 | .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head), |
| 1157 | .desc = { |
| 1158 | /* |
| 1159 | * no elements => accept any |
| 1160 | * sanity checking will happen later |
| 1161 | * when setting device properties |
| 1162 | */ |
| 1163 | { /* end of list */ } |
| 1164 | }, |
| 1165 | }; |
| 1166 | |
| 1167 | QemuOptsList qemu_global_opts = { |
| 1168 | .name = "global", |
| 1169 | .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head), |
| 1170 | .desc = { |
| 1171 | { |
| 1172 | .name = "driver", |
| 1173 | .type = QEMU_OPT_STRING, |
| 1174 | },{ |
| 1175 | .name = "property", |
| 1176 | .type = QEMU_OPT_STRING, |
| 1177 | },{ |
| 1178 | .name = "value", |
| 1179 | .type = QEMU_OPT_STRING, |
| 1180 | }, |
| 1181 | { /* end of list */ } |
| 1182 | }, |
| 1183 | }; |
| 1184 | |
| 1185 | int qemu_global_option(const char *str) |
| 1186 | { |
| 1187 | char driver[64], property[64]; |
| 1188 | QemuOpts *opts; |
| 1189 | int rc, offset; |
| 1190 | |
| 1191 | rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset); |
| 1192 | if (rc == 2 && str[offset] == '=') { |
| 1193 | opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort); |
| 1194 | qemu_opt_set(opts, "driver", driver, &error_abort); |
| 1195 | qemu_opt_set(opts, "property", property, &error_abort); |
| 1196 | qemu_opt_set(opts, "value", str + offset + 1, &error_abort); |
| 1197 | return 0; |
| 1198 | } |
| 1199 | |
| 1200 | opts = qemu_opts_parse_noisily(&qemu_global_opts, str, false); |
| 1201 | if (!opts) { |
| 1202 | return -1; |
| 1203 | } |
| 1204 | if (!qemu_opt_get(opts, "driver") |
| 1205 | || !qemu_opt_get(opts, "property") |
| 1206 | || !qemu_opt_get(opts, "value")) { |
| 1207 | error_report("options 'driver', 'property', and 'value'" |
| 1208 | " are required"); |
| 1209 | return -1; |
| 1210 | } |
| 1211 | |
| 1212 | return 0; |
| 1213 | } |
| 1214 | |
| 1215 | bool qmp_command_available(const QmpCommand *cmd, Error **errp) |
| 1216 | { |
| 1217 | if (!phase_check(PHASE_MACHINE_READY) && |
| 1218 | !(cmd->options & QCO_ALLOW_PRECONFIG)) { |
| 1219 | error_setg(errp, "The command '%s' is permitted only after machine initialization has completed", |
| 1220 | cmd->name); |
| 1221 | return false; |
| 1222 | } |
| 1223 | return true; |
| 1224 | } |