Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging
[qemu.git] / 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 #include "sysemu/block-backend.h"
32
33 /*
34 * Aliases were a bad idea from the start. Let's keep them
35 * from spreading further.
36 */
37 typedef struct QDevAlias
38 {
39 const char *typename;
40 const char *alias;
41 uint32_t arch_mask;
42 } QDevAlias;
43
44 /* Please keep this table sorted by typename. */
45 static const QDevAlias qdev_alias_table[] = {
46 { "e1000", "e1000-82540em" },
47 { "ich9-ahci", "ahci" },
48 { "kvm-pci-assign", "pci-assign" },
49 { "lsi53c895a", "lsi" },
50 { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_S390X },
51 { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
52 { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_S390X },
53 { "virtio-balloon-pci", "virtio-balloon",
54 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
55 { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_S390X },
56 { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
57 { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_S390X },
58 { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
59 { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_S390X },
60 { "virtio-input-host-pci", "virtio-input-host",
61 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
62 { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_S390X },
63 { "virtio-keyboard-pci", "virtio-keyboard",
64 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
65 { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_S390X },
66 { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
67 { "virtio-net-ccw", "virtio-net", QEMU_ARCH_S390X },
68 { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
69 { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_S390X },
70 { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
71 { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_S390X },
72 { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
73 { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_S390X },
74 { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
75 { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_S390X },
76 { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
77 { }
78 };
79
80 static const char *qdev_class_get_alias(DeviceClass *dc)
81 {
82 const char *typename = object_class_get_name(OBJECT_CLASS(dc));
83 int i;
84
85 for (i = 0; qdev_alias_table[i].typename; i++) {
86 if (qdev_alias_table[i].arch_mask &&
87 !(qdev_alias_table[i].arch_mask & arch_type)) {
88 continue;
89 }
90
91 if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
92 return qdev_alias_table[i].alias;
93 }
94 }
95
96 return NULL;
97 }
98
99 static bool qdev_class_has_alias(DeviceClass *dc)
100 {
101 return (qdev_class_get_alias(dc) != NULL);
102 }
103
104 static void qdev_print_devinfo(DeviceClass *dc)
105 {
106 error_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
107 if (dc->bus_type) {
108 error_printf(", bus %s", dc->bus_type);
109 }
110 if (qdev_class_has_alias(dc)) {
111 error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
112 }
113 if (dc->desc) {
114 error_printf(", desc \"%s\"", dc->desc);
115 }
116 if (dc->cannot_instantiate_with_device_add_yet) {
117 error_printf(", no-user");
118 }
119 error_printf("\n");
120 }
121
122 static gint devinfo_cmp(gconstpointer a, gconstpointer b)
123 {
124 return strcasecmp(object_class_get_name((ObjectClass *)a),
125 object_class_get_name((ObjectClass *)b));
126 }
127
128 static void qdev_print_devinfos(bool show_no_user)
129 {
130 static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = {
131 [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub",
132 [DEVICE_CATEGORY_USB] = "USB",
133 [DEVICE_CATEGORY_STORAGE] = "Storage",
134 [DEVICE_CATEGORY_NETWORK] = "Network",
135 [DEVICE_CATEGORY_INPUT] = "Input",
136 [DEVICE_CATEGORY_DISPLAY] = "Display",
137 [DEVICE_CATEGORY_SOUND] = "Sound",
138 [DEVICE_CATEGORY_MISC] = "Misc",
139 [DEVICE_CATEGORY_CPU] = "CPU",
140 [DEVICE_CATEGORY_MAX] = "Uncategorized",
141 };
142 GSList *list, *elt;
143 int i;
144 bool cat_printed;
145
146 list = g_slist_sort(object_class_get_list(TYPE_DEVICE, false),
147 devinfo_cmp);
148
149 for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) {
150 cat_printed = false;
151 for (elt = list; elt; elt = elt->next) {
152 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
153 TYPE_DEVICE);
154 if ((i < DEVICE_CATEGORY_MAX
155 ? !test_bit(i, dc->categories)
156 : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX))
157 || (!show_no_user
158 && dc->cannot_instantiate_with_device_add_yet)) {
159 continue;
160 }
161 if (!cat_printed) {
162 error_printf("%s%s devices:\n", i ? "\n" : "",
163 cat_name[i]);
164 cat_printed = true;
165 }
166 qdev_print_devinfo(dc);
167 }
168 }
169
170 g_slist_free(list);
171 }
172
173 static int set_property(void *opaque, const char *name, const char *value,
174 Error **errp)
175 {
176 Object *obj = opaque;
177 Error *err = NULL;
178
179 if (strcmp(name, "driver") == 0)
180 return 0;
181 if (strcmp(name, "bus") == 0)
182 return 0;
183
184 object_property_parse(obj, value, name, &err);
185 if (err != NULL) {
186 error_propagate(errp, err);
187 return -1;
188 }
189 return 0;
190 }
191
192 static const char *find_typename_by_alias(const char *alias)
193 {
194 int i;
195
196 for (i = 0; qdev_alias_table[i].alias; i++) {
197 if (qdev_alias_table[i].arch_mask &&
198 !(qdev_alias_table[i].arch_mask & arch_type)) {
199 continue;
200 }
201
202 if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
203 return qdev_alias_table[i].typename;
204 }
205 }
206
207 return NULL;
208 }
209
210 static DeviceClass *qdev_get_device_class(const char **driver, Error **errp)
211 {
212 ObjectClass *oc;
213 DeviceClass *dc;
214 const char *original_name = *driver;
215
216 oc = object_class_by_name(*driver);
217 if (!oc) {
218 const char *typename = find_typename_by_alias(*driver);
219
220 if (typename) {
221 *driver = typename;
222 oc = object_class_by_name(*driver);
223 }
224 }
225
226 if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
227 if (*driver != original_name) {
228 error_setg(errp, "'%s' (alias '%s') is not a valid device model"
229 " name", original_name, *driver);
230 } else {
231 error_setg(errp, "'%s' is not a valid device model name", *driver);
232 }
233 return NULL;
234 }
235
236 if (object_class_is_abstract(oc)) {
237 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
238 "non-abstract device type");
239 return NULL;
240 }
241
242 dc = DEVICE_CLASS(oc);
243 if (dc->cannot_instantiate_with_device_add_yet ||
244 (qdev_hotplug && !dc->hotpluggable)) {
245 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
246 "pluggable device type");
247 return NULL;
248 }
249
250 return dc;
251 }
252
253
254 int qdev_device_help(QemuOpts *opts)
255 {
256 Error *local_err = NULL;
257 const char *driver;
258 DevicePropertyInfoList *prop_list;
259 DevicePropertyInfoList *prop;
260
261 driver = qemu_opt_get(opts, "driver");
262 if (driver && is_help_option(driver)) {
263 qdev_print_devinfos(false);
264 return 1;
265 }
266
267 if (!driver || !qemu_opt_has_help_opt(opts)) {
268 return 0;
269 }
270
271 if (!object_class_by_name(driver)) {
272 const char *typename = find_typename_by_alias(driver);
273
274 if (typename) {
275 driver = typename;
276 }
277 }
278
279 prop_list = qmp_device_list_properties(driver, &local_err);
280 if (local_err) {
281 goto error;
282 }
283
284 for (prop = prop_list; prop; prop = prop->next) {
285 error_printf("%s.%s=%s", driver,
286 prop->value->name,
287 prop->value->type);
288 if (prop->value->has_description) {
289 error_printf(" (%s)\n", prop->value->description);
290 } else {
291 error_printf("\n");
292 }
293 }
294
295 qapi_free_DevicePropertyInfoList(prop_list);
296 return 1;
297
298 error:
299 error_report_err(local_err);
300 return 1;
301 }
302
303 static Object *qdev_get_peripheral(void)
304 {
305 static Object *dev;
306
307 if (dev == NULL) {
308 dev = container_get(qdev_get_machine(), "/peripheral");
309 }
310
311 return dev;
312 }
313
314 static Object *qdev_get_peripheral_anon(void)
315 {
316 static Object *dev;
317
318 if (dev == NULL) {
319 dev = container_get(qdev_get_machine(), "/peripheral-anon");
320 }
321
322 return dev;
323 }
324
325 static void qbus_list_bus(DeviceState *dev, Error **errp)
326 {
327 BusState *child;
328 const char *sep = " ";
329
330 error_append_hint(errp, "child buses at \"%s\":",
331 dev->id ? dev->id : object_get_typename(OBJECT(dev)));
332 QLIST_FOREACH(child, &dev->child_bus, sibling) {
333 error_append_hint(errp, "%s\"%s\"", sep, child->name);
334 sep = ", ";
335 }
336 error_append_hint(errp, "\n");
337 }
338
339 static void qbus_list_dev(BusState *bus, Error **errp)
340 {
341 BusChild *kid;
342 const char *sep = " ";
343
344 error_append_hint(errp, "devices at \"%s\":", bus->name);
345 QTAILQ_FOREACH(kid, &bus->children, sibling) {
346 DeviceState *dev = kid->child;
347 error_append_hint(errp, "%s\"%s\"", sep,
348 object_get_typename(OBJECT(dev)));
349 if (dev->id) {
350 error_append_hint(errp, "/\"%s\"", dev->id);
351 }
352 sep = ", ";
353 }
354 error_append_hint(errp, "\n");
355 }
356
357 static BusState *qbus_find_bus(DeviceState *dev, char *elem)
358 {
359 BusState *child;
360
361 QLIST_FOREACH(child, &dev->child_bus, sibling) {
362 if (strcmp(child->name, elem) == 0) {
363 return child;
364 }
365 }
366 return NULL;
367 }
368
369 static DeviceState *qbus_find_dev(BusState *bus, char *elem)
370 {
371 BusChild *kid;
372
373 /*
374 * try to match in order:
375 * (1) instance id, if present
376 * (2) driver name
377 * (3) driver alias, if present
378 */
379 QTAILQ_FOREACH(kid, &bus->children, sibling) {
380 DeviceState *dev = kid->child;
381 if (dev->id && strcmp(dev->id, elem) == 0) {
382 return dev;
383 }
384 }
385 QTAILQ_FOREACH(kid, &bus->children, sibling) {
386 DeviceState *dev = kid->child;
387 if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
388 return dev;
389 }
390 }
391 QTAILQ_FOREACH(kid, &bus->children, sibling) {
392 DeviceState *dev = kid->child;
393 DeviceClass *dc = DEVICE_GET_CLASS(dev);
394
395 if (qdev_class_has_alias(dc) &&
396 strcmp(qdev_class_get_alias(dc), elem) == 0) {
397 return dev;
398 }
399 }
400 return NULL;
401 }
402
403 static inline bool qbus_is_full(BusState *bus)
404 {
405 BusClass *bus_class = BUS_GET_CLASS(bus);
406 return bus_class->max_dev && bus->max_index >= bus_class->max_dev;
407 }
408
409 /*
410 * Search the tree rooted at @bus for a bus.
411 * If @name, search for a bus with that name. Note that bus names
412 * need not be unique. Yes, that's screwed up.
413 * Else search for a bus that is a subtype of @bus_typename.
414 * If more than one exists, prefer one that can take another device.
415 * Return the bus if found, else %NULL.
416 */
417 static BusState *qbus_find_recursive(BusState *bus, const char *name,
418 const char *bus_typename)
419 {
420 BusChild *kid;
421 BusState *pick, *child, *ret;
422 bool match;
423
424 assert(name || bus_typename);
425 if (name) {
426 match = !strcmp(bus->name, name);
427 } else {
428 match = !!object_dynamic_cast(OBJECT(bus), bus_typename);
429 }
430
431 if (match && !qbus_is_full(bus)) {
432 return bus; /* root matches and isn't full */
433 }
434
435 pick = match ? bus : NULL;
436
437 QTAILQ_FOREACH(kid, &bus->children, sibling) {
438 DeviceState *dev = kid->child;
439 QLIST_FOREACH(child, &dev->child_bus, sibling) {
440 ret = qbus_find_recursive(child, name, bus_typename);
441 if (ret && !qbus_is_full(ret)) {
442 return ret; /* a descendant matches and isn't full */
443 }
444 if (ret && !pick) {
445 pick = ret;
446 }
447 }
448 }
449
450 /* root or a descendant matches, but is full */
451 return pick;
452 }
453
454 static BusState *qbus_find(const char *path, Error **errp)
455 {
456 DeviceState *dev;
457 BusState *bus;
458 char elem[128];
459 int pos, len;
460
461 /* find start element */
462 if (path[0] == '/') {
463 bus = sysbus_get_default();
464 pos = 0;
465 } else {
466 if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
467 assert(!path[0]);
468 elem[0] = len = 0;
469 }
470 bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
471 if (!bus) {
472 error_setg(errp, "Bus '%s' not found", elem);
473 return NULL;
474 }
475 pos = len;
476 }
477
478 for (;;) {
479 assert(path[pos] == '/' || !path[pos]);
480 while (path[pos] == '/') {
481 pos++;
482 }
483 if (path[pos] == '\0') {
484 break;
485 }
486
487 /* find device */
488 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
489 g_assert_not_reached();
490 elem[0] = len = 0;
491 }
492 pos += len;
493 dev = qbus_find_dev(bus, elem);
494 if (!dev) {
495 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
496 "Device '%s' not found", elem);
497 qbus_list_dev(bus, errp);
498 return NULL;
499 }
500
501 assert(path[pos] == '/' || !path[pos]);
502 while (path[pos] == '/') {
503 pos++;
504 }
505 if (path[pos] == '\0') {
506 /* last specified element is a device. If it has exactly
507 * one child bus accept it nevertheless */
508 if (dev->num_child_bus == 1) {
509 bus = QLIST_FIRST(&dev->child_bus);
510 break;
511 }
512 if (dev->num_child_bus) {
513 error_setg(errp, "Device '%s' has multiple child buses",
514 elem);
515 qbus_list_bus(dev, errp);
516 } else {
517 error_setg(errp, "Device '%s' has no child bus", elem);
518 }
519 return NULL;
520 }
521
522 /* find bus */
523 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
524 g_assert_not_reached();
525 elem[0] = len = 0;
526 }
527 pos += len;
528 bus = qbus_find_bus(dev, elem);
529 if (!bus) {
530 error_setg(errp, "Bus '%s' not found", elem);
531 qbus_list_bus(dev, errp);
532 return NULL;
533 }
534 }
535
536 if (qbus_is_full(bus)) {
537 error_setg(errp, "Bus '%s' is full", path);
538 return NULL;
539 }
540 return bus;
541 }
542
543 void qdev_set_id(DeviceState *dev, const char *id)
544 {
545 if (id) {
546 dev->id = id;
547 }
548
549 if (dev->id) {
550 object_property_add_child(qdev_get_peripheral(), dev->id,
551 OBJECT(dev), NULL);
552 } else {
553 static int anon_count;
554 gchar *name = g_strdup_printf("device[%d]", anon_count++);
555 object_property_add_child(qdev_get_peripheral_anon(), name,
556 OBJECT(dev), NULL);
557 g_free(name);
558 }
559 }
560
561 DeviceState *qdev_device_add(QemuOpts *opts, Error **errp)
562 {
563 DeviceClass *dc;
564 const char *driver, *path;
565 DeviceState *dev;
566 BusState *bus = NULL;
567 Error *err = NULL;
568
569 driver = qemu_opt_get(opts, "driver");
570 if (!driver) {
571 error_setg(errp, QERR_MISSING_PARAMETER, "driver");
572 return NULL;
573 }
574
575 /* find driver */
576 dc = qdev_get_device_class(&driver, errp);
577 if (!dc) {
578 return NULL;
579 }
580
581 /* find bus */
582 path = qemu_opt_get(opts, "bus");
583 if (path != NULL) {
584 bus = qbus_find(path, errp);
585 if (!bus) {
586 return NULL;
587 }
588 if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) {
589 error_setg(errp, "Device '%s' can't go on %s bus",
590 driver, object_get_typename(OBJECT(bus)));
591 return NULL;
592 }
593 } else if (dc->bus_type != NULL) {
594 bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type);
595 if (!bus || qbus_is_full(bus)) {
596 error_setg(errp, "No '%s' bus found for device '%s'",
597 dc->bus_type, driver);
598 return NULL;
599 }
600 }
601 if (qdev_hotplug && bus && !qbus_is_hotpluggable(bus)) {
602 error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name);
603 return NULL;
604 }
605
606 /* create device */
607 dev = DEVICE(object_new(driver));
608
609 if (bus) {
610 qdev_set_parent_bus(dev, bus);
611 }
612
613 qdev_set_id(dev, qemu_opts_id(opts));
614
615 /* set properties */
616 if (qemu_opt_foreach(opts, set_property, dev, &err)) {
617 error_propagate(errp, err);
618 object_unparent(OBJECT(dev));
619 object_unref(OBJECT(dev));
620 return NULL;
621 }
622
623 dev->opts = opts;
624 object_property_set_bool(OBJECT(dev), true, "realized", &err);
625 if (err != NULL) {
626 error_propagate(errp, err);
627 dev->opts = NULL;
628 object_unparent(OBJECT(dev));
629 object_unref(OBJECT(dev));
630 return NULL;
631 }
632 return dev;
633 }
634
635
636 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
637 static void qbus_print(Monitor *mon, BusState *bus, int indent);
638
639 static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
640 int indent)
641 {
642 if (!props)
643 return;
644 for (; props->name; props++) {
645 Error *err = NULL;
646 char *value;
647 char *legacy_name = g_strdup_printf("legacy-%s", props->name);
648 if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
649 value = object_property_get_str(OBJECT(dev), legacy_name, &err);
650 } else {
651 value = object_property_print(OBJECT(dev), props->name, true, &err);
652 }
653 g_free(legacy_name);
654
655 if (err) {
656 error_free(err);
657 continue;
658 }
659 qdev_printf("%s = %s\n", props->name,
660 value && *value ? value : "<null>");
661 g_free(value);
662 }
663 }
664
665 static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
666 {
667 BusClass *bc = BUS_GET_CLASS(bus);
668
669 if (bc->print_dev) {
670 bc->print_dev(mon, dev, indent);
671 }
672 }
673
674 static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
675 {
676 ObjectClass *class;
677 BusState *child;
678 NamedGPIOList *ngl;
679
680 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
681 dev->id ? dev->id : "");
682 indent += 2;
683 QLIST_FOREACH(ngl, &dev->gpios, node) {
684 if (ngl->num_in) {
685 qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "",
686 ngl->num_in);
687 }
688 if (ngl->num_out) {
689 qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "",
690 ngl->num_out);
691 }
692 }
693 class = object_get_class(OBJECT(dev));
694 do {
695 qdev_print_props(mon, dev, DEVICE_CLASS(class)->props, indent);
696 class = object_class_get_parent(class);
697 } while (class != object_class_by_name(TYPE_DEVICE));
698 bus_print_dev(dev->parent_bus, mon, dev, indent);
699 QLIST_FOREACH(child, &dev->child_bus, sibling) {
700 qbus_print(mon, child, indent);
701 }
702 }
703
704 static void qbus_print(Monitor *mon, BusState *bus, int indent)
705 {
706 BusChild *kid;
707
708 qdev_printf("bus: %s\n", bus->name);
709 indent += 2;
710 qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
711 QTAILQ_FOREACH(kid, &bus->children, sibling) {
712 DeviceState *dev = kid->child;
713 qdev_print(mon, dev, indent);
714 }
715 }
716 #undef qdev_printf
717
718 void hmp_info_qtree(Monitor *mon, const QDict *qdict)
719 {
720 if (sysbus_get_default())
721 qbus_print(mon, sysbus_get_default(), 0);
722 }
723
724 void hmp_info_qdm(Monitor *mon, const QDict *qdict)
725 {
726 qdev_print_devinfos(true);
727 }
728
729 typedef struct QOMCompositionState {
730 Monitor *mon;
731 int indent;
732 } QOMCompositionState;
733
734 static void print_qom_composition(Monitor *mon, Object *obj, int indent);
735
736 static int print_qom_composition_child(Object *obj, void *opaque)
737 {
738 QOMCompositionState *s = opaque;
739
740 print_qom_composition(s->mon, obj, s->indent);
741
742 return 0;
743 }
744
745 static void print_qom_composition(Monitor *mon, Object *obj, int indent)
746 {
747 QOMCompositionState s = {
748 .mon = mon,
749 .indent = indent + 2,
750 };
751 char *name;
752
753 if (obj == object_get_root()) {
754 name = g_strdup("");
755 } else {
756 name = object_get_canonical_path_component(obj);
757 }
758 monitor_printf(mon, "%*s/%s (%s)\n", indent, "", name,
759 object_get_typename(obj));
760 g_free(name);
761 object_child_foreach(obj, print_qom_composition_child, &s);
762 }
763
764 void hmp_info_qom_tree(Monitor *mon, const QDict *dict)
765 {
766 const char *path = qdict_get_try_str(dict, "path");
767 Object *obj;
768 bool ambiguous = false;
769
770 if (path) {
771 obj = object_resolve_path(path, &ambiguous);
772 if (!obj) {
773 monitor_printf(mon, "Path '%s' could not be resolved.\n", path);
774 return;
775 }
776 if (ambiguous) {
777 monitor_printf(mon, "Warning: Path '%s' is ambiguous.\n", path);
778 return;
779 }
780 } else {
781 obj = qdev_get_machine();
782 }
783 print_qom_composition(mon, obj, 0);
784 }
785
786 void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp)
787 {
788 Error *local_err = NULL;
789 QemuOpts *opts;
790 DeviceState *dev;
791
792 opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
793 if (local_err) {
794 error_propagate(errp, local_err);
795 return;
796 }
797 if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
798 qemu_opts_del(opts);
799 return;
800 }
801 dev = qdev_device_add(opts, &local_err);
802 if (!dev) {
803 error_propagate(errp, local_err);
804 qemu_opts_del(opts);
805 return;
806 }
807 object_unref(OBJECT(dev));
808 }
809
810 static DeviceState *find_device_state(const char *id, Error **errp)
811 {
812 Object *obj;
813
814 if (id[0] == '/') {
815 obj = object_resolve_path(id, NULL);
816 } else {
817 char *root_path = object_get_canonical_path(qdev_get_peripheral());
818 char *path = g_strdup_printf("%s/%s", root_path, id);
819
820 g_free(root_path);
821 obj = object_resolve_path_type(path, TYPE_DEVICE, NULL);
822 g_free(path);
823 }
824
825 if (!obj) {
826 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
827 "Device '%s' not found", id);
828 return NULL;
829 }
830
831 if (!object_dynamic_cast(obj, TYPE_DEVICE)) {
832 error_setg(errp, "%s is not a hotpluggable device", id);
833 return NULL;
834 }
835
836 return DEVICE(obj);
837 }
838
839 void qmp_device_del(const char *id, Error **errp)
840 {
841 DeviceState *dev = find_device_state(id, errp);
842 if (dev != NULL) {
843 qdev_unplug(dev, errp);
844 }
845 }
846
847 BlockBackend *blk_by_qdev_id(const char *id, Error **errp)
848 {
849 DeviceState *dev;
850 BlockBackend *blk;
851
852 dev = find_device_state(id, errp);
853 if (dev == NULL) {
854 return NULL;
855 }
856
857 blk = blk_by_dev(dev);
858 if (!blk) {
859 error_setg(errp, "Device does not have a block device backend");
860 }
861 return blk;
862 }
863
864 void qdev_machine_init(void)
865 {
866 qdev_get_peripheral_anon();
867 qdev_get_peripheral();
868 }
869
870 QemuOptsList qemu_device_opts = {
871 .name = "device",
872 .implied_opt_name = "driver",
873 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
874 .desc = {
875 /*
876 * no elements => accept any
877 * sanity checking will happen later
878 * when setting device properties
879 */
880 { /* end of list */ }
881 },
882 };
883
884 QemuOptsList qemu_global_opts = {
885 .name = "global",
886 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
887 .desc = {
888 {
889 .name = "driver",
890 .type = QEMU_OPT_STRING,
891 },{
892 .name = "property",
893 .type = QEMU_OPT_STRING,
894 },{
895 .name = "value",
896 .type = QEMU_OPT_STRING,
897 },
898 { /* end of list */ }
899 },
900 };
901
902 int qemu_global_option(const char *str)
903 {
904 char driver[64], property[64];
905 QemuOpts *opts;
906 int rc, offset;
907
908 rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset);
909 if (rc == 2 && str[offset] == '=') {
910 opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
911 qemu_opt_set(opts, "driver", driver, &error_abort);
912 qemu_opt_set(opts, "property", property, &error_abort);
913 qemu_opt_set(opts, "value", str + offset + 1, &error_abort);
914 return 0;
915 }
916
917 opts = qemu_opts_parse_noisily(&qemu_global_opts, str, false);
918 if (!opts) {
919 return -1;
920 }
921
922 return 0;
923 }