blob: 8fd6df93d2d28cec64c4a09646ba59b9da2ae76f [file] [log] [blame]
Anthony Liguoriee46d8a2011-12-22 15:24:20 -06001/*
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
Peter Maydelld38ea872016-01-29 17:50:05 +000020#include "qemu/osdep.h"
Paolo Bonzinib4a42f82013-02-04 11:37:52 +010021#include "hw/qdev.h"
Andreas Färber2f7bd822013-04-16 03:50:21 +020022#include "hw/sysbus.h"
Paolo Bonzini83c90892012-12-17 18:19:49 +010023#include "monitor/monitor.h"
Paolo Bonzinib4a42f82013-02-04 11:37:52 +010024#include "monitor/qdev.h"
Luiz Capitulinoa15fef22012-03-29 12:38:50 -030025#include "qmp-commands.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010026#include "sysemu/arch_init.h"
Markus Armbrustercc7a8ea2015-03-17 17:22:46 +010027#include "qapi/qmp/qerror.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010028#include "qemu/config-file.h"
Markus Armbrusterd49b6832015-03-17 18:29:20 +010029#include "qemu/error-report.h"
Veronia Bahaaf348b6d2016-03-20 19:16:19 +020030#include "qemu/help_option.h"
Kevin Wolf9680cae2016-09-20 13:38:42 +020031#include "sysemu/block-backend.h"
Juan Quintelac4b63b72017-04-24 19:02:44 +020032#include "migration/misc.h"
Anthony Liguoriee46d8a2011-12-22 15:24:20 -060033
34/*
35 * Aliases were a bad idea from the start. Let's keep them
36 * from spreading further.
37 */
38typedef struct QDevAlias
39{
40 const char *typename;
41 const char *alias;
Alexander Graf5f629d92012-05-18 02:36:26 +020042 uint32_t arch_mask;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -060043} QDevAlias;
44
Sascha Silbe36e99162016-02-18 22:44:13 +010045/* Please keep this table sorted by typename. */
Anthony Liguoriee46d8a2011-12-22 15:24:20 -060046static const QDevAlias qdev_alias_table[] = {
Sascha Silbe36e99162016-02-18 22:44:13 +010047 { "e1000", "e1000-82540em" },
48 { "ich9-ahci", "ahci" },
49 { "kvm-pci-assign", "pci-assign" },
50 { "lsi53c895a", "lsi" },
Sascha Silbe588c36c2016-02-18 22:44:14 +010051 { "virtio-9p-ccw", "virtio-9p", QEMU_ARCH_S390X },
52 { "virtio-9p-pci", "virtio-9p", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
53 { "virtio-balloon-ccw", "virtio-balloon", QEMU_ARCH_S390X },
Alexander Graf5f629d92012-05-18 02:36:26 +020054 { "virtio-balloon-pci", "virtio-balloon",
55 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
Alexander Graf1f68f1d2015-06-16 23:06:33 +020056 { "virtio-blk-ccw", "virtio-blk", QEMU_ARCH_S390X },
Sascha Silbe36e99162016-02-18 22:44:13 +010057 { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
Sascha Silbe588c36c2016-02-18 22:44:14 +010058 { "virtio-gpu-ccw", "virtio-gpu", QEMU_ARCH_S390X },
59 { "virtio-gpu-pci", "virtio-gpu", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
60 { "virtio-input-host-ccw", "virtio-input-host", QEMU_ARCH_S390X },
61 { "virtio-input-host-pci", "virtio-input-host",
62 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
63 { "virtio-keyboard-ccw", "virtio-keyboard", QEMU_ARCH_S390X },
64 { "virtio-keyboard-pci", "virtio-keyboard",
65 QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
66 { "virtio-mouse-ccw", "virtio-mouse", QEMU_ARCH_S390X },
67 { "virtio-mouse-pci", "virtio-mouse", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
Alexander Graf1f68f1d2015-06-16 23:06:33 +020068 { "virtio-net-ccw", "virtio-net", QEMU_ARCH_S390X },
Sascha Silbe36e99162016-02-18 22:44:13 +010069 { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
Sascha Silbe588c36c2016-02-18 22:44:14 +010070 { "virtio-rng-ccw", "virtio-rng", QEMU_ARCH_S390X },
71 { "virtio-rng-pci", "virtio-rng", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
72 { "virtio-scsi-ccw", "virtio-scsi", QEMU_ARCH_S390X },
73 { "virtio-scsi-pci", "virtio-scsi", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
Alexander Graf1f68f1d2015-06-16 23:06:33 +020074 { "virtio-serial-ccw", "virtio-serial", QEMU_ARCH_S390X },
Sascha Silbe36e99162016-02-18 22:44:13 +010075 { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
Sascha Silbe588c36c2016-02-18 22:44:14 +010076 { "virtio-tablet-ccw", "virtio-tablet", QEMU_ARCH_S390X },
77 { "virtio-tablet-pci", "virtio-tablet", QEMU_ARCH_ALL & ~QEMU_ARCH_S390X },
Anthony Liguoriee46d8a2011-12-22 15:24:20 -060078 { }
79};
80
81static const char *qdev_class_get_alias(DeviceClass *dc)
82{
83 const char *typename = object_class_get_name(OBJECT_CLASS(dc));
84 int i;
85
86 for (i = 0; qdev_alias_table[i].typename; i++) {
Alexander Graf5f629d92012-05-18 02:36:26 +020087 if (qdev_alias_table[i].arch_mask &&
88 !(qdev_alias_table[i].arch_mask & arch_type)) {
89 continue;
90 }
91
Anthony Liguoriee46d8a2011-12-22 15:24:20 -060092 if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
93 return qdev_alias_table[i].alias;
94 }
95 }
96
97 return NULL;
98}
99
100static bool qdev_class_has_alias(DeviceClass *dc)
101{
102 return (qdev_class_get_alias(dc) != NULL);
103}
104
Markus Armbrustera3400ae2013-10-10 15:00:21 +0200105static void qdev_print_devinfo(DeviceClass *dc)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600106{
Markus Armbrustera3400ae2013-10-10 15:00:21 +0200107 error_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
Anthony Liguori0d936922012-05-02 09:00:20 +0200108 if (dc->bus_type) {
109 error_printf(", bus %s", dc->bus_type);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600110 }
111 if (qdev_class_has_alias(dc)) {
112 error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
113 }
114 if (dc->desc) {
115 error_printf(", desc \"%s\"", dc->desc);
116 }
Eduardo Habkoste90f2a82017-05-03 17:35:44 -0300117 if (!dc->user_creatable) {
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600118 error_printf(", no-user");
119 }
120 error_printf("\n");
121}
122
Markus Armbrustera3400ae2013-10-10 15:00:21 +0200123static gint devinfo_cmp(gconstpointer a, gconstpointer b)
124{
125 return strcasecmp(object_class_get_name((ObjectClass *)a),
126 object_class_get_name((ObjectClass *)b));
127}
128
129static void qdev_print_devinfos(bool show_no_user)
130{
131 static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = {
132 [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub",
133 [DEVICE_CATEGORY_USB] = "USB",
134 [DEVICE_CATEGORY_STORAGE] = "Storage",
135 [DEVICE_CATEGORY_NETWORK] = "Network",
136 [DEVICE_CATEGORY_INPUT] = "Input",
137 [DEVICE_CATEGORY_DISPLAY] = "Display",
138 [DEVICE_CATEGORY_SOUND] = "Sound",
139 [DEVICE_CATEGORY_MISC] = "Misc",
Thomas Huthba31cc72017-01-20 14:01:16 +0100140 [DEVICE_CATEGORY_CPU] = "CPU",
Markus Armbrustera3400ae2013-10-10 15:00:21 +0200141 [DEVICE_CATEGORY_MAX] = "Uncategorized",
142 };
143 GSList *list, *elt;
144 int i;
145 bool cat_printed;
146
147 list = g_slist_sort(object_class_get_list(TYPE_DEVICE, false),
148 devinfo_cmp);
149
150 for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) {
151 cat_printed = false;
152 for (elt = list; elt; elt = elt->next) {
153 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
154 TYPE_DEVICE);
155 if ((i < DEVICE_CATEGORY_MAX
156 ? !test_bit(i, dc->categories)
157 : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX))
Markus Armbrusterefec3dd2013-11-28 17:26:54 +0100158 || (!show_no_user
Eduardo Habkoste90f2a82017-05-03 17:35:44 -0300159 && !dc->user_creatable)) {
Markus Armbrustera3400ae2013-10-10 15:00:21 +0200160 continue;
161 }
162 if (!cat_printed) {
163 error_printf("%s%s devices:\n", i ? "\n" : "",
164 cat_name[i]);
165 cat_printed = true;
166 }
167 qdev_print_devinfo(dc);
168 }
169 }
170
171 g_slist_free(list);
172}
173
Markus Armbruster71df1d82015-03-12 08:40:25 +0100174static int set_property(void *opaque, const char *name, const char *value,
175 Error **errp)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600176{
Paolo Bonzini98a65282014-02-08 11:01:49 +0100177 Object *obj = opaque;
Andreas Färberb1fe9bc2013-05-01 16:10:24 +0200178 Error *err = NULL;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600179
180 if (strcmp(name, "driver") == 0)
181 return 0;
182 if (strcmp(name, "bus") == 0)
183 return 0;
184
Paolo Bonzini98a65282014-02-08 11:01:49 +0100185 object_property_parse(obj, value, name, &err);
Andreas Färberb1fe9bc2013-05-01 16:10:24 +0200186 if (err != NULL) {
Markus Armbruster4caa4892015-03-12 13:58:02 +0100187 error_propagate(errp, err);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600188 return -1;
189 }
190 return 0;
191}
192
193static const char *find_typename_by_alias(const char *alias)
194{
195 int i;
196
197 for (i = 0; qdev_alias_table[i].alias; i++) {
Alexander Graf5f629d92012-05-18 02:36:26 +0200198 if (qdev_alias_table[i].arch_mask &&
199 !(qdev_alias_table[i].arch_mask & arch_type)) {
200 continue;
201 }
202
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600203 if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
204 return qdev_alias_table[i].typename;
205 }
206 }
207
208 return NULL;
209}
210
Eduardo Habkost43c95d72014-11-01 13:56:09 -0200211static DeviceClass *qdev_get_device_class(const char **driver, Error **errp)
212{
213 ObjectClass *oc;
214 DeviceClass *dc;
Sascha Silbef6b53192016-02-18 22:44:12 +0100215 const char *original_name = *driver;
Eduardo Habkost43c95d72014-11-01 13:56:09 -0200216
217 oc = object_class_by_name(*driver);
218 if (!oc) {
219 const char *typename = find_typename_by_alias(*driver);
220
221 if (typename) {
222 *driver = typename;
223 oc = object_class_by_name(*driver);
224 }
225 }
226
227 if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
Sascha Silbef6b53192016-02-18 22:44:12 +0100228 if (*driver != original_name) {
229 error_setg(errp, "'%s' (alias '%s') is not a valid device model"
230 " name", original_name, *driver);
231 } else {
232 error_setg(errp, "'%s' is not a valid device model name", *driver);
233 }
Eduardo Habkost43c95d72014-11-01 13:56:09 -0200234 return NULL;
235 }
236
237 if (object_class_is_abstract(oc)) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +0100238 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
239 "non-abstract device type");
Eduardo Habkost43c95d72014-11-01 13:56:09 -0200240 return NULL;
241 }
242
243 dc = DEVICE_CLASS(oc);
Eduardo Habkoste90f2a82017-05-03 17:35:44 -0300244 if (!dc->user_creatable ||
Eduardo Habkost43c95d72014-11-01 13:56:09 -0200245 (qdev_hotplug && !dc->hotpluggable)) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +0100246 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
247 "pluggable device type");
Eduardo Habkost43c95d72014-11-01 13:56:09 -0200248 return NULL;
249 }
250
251 return dc;
252}
253
254
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600255int qdev_device_help(QemuOpts *opts)
256{
Stefan Hajnoczief523582014-07-09 14:01:32 +0200257 Error *local_err = NULL;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600258 const char *driver;
Stefan Hajnoczief523582014-07-09 14:01:32 +0200259 DevicePropertyInfoList *prop_list;
260 DevicePropertyInfoList *prop;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600261
262 driver = qemu_opt_get(opts, "driver");
Peter Maydellc8057f92012-08-02 13:45:54 +0100263 if (driver && is_help_option(driver)) {
Markus Armbrustera3400ae2013-10-10 15:00:21 +0200264 qdev_print_devinfos(false);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600265 return 1;
266 }
267
Peter Maydellc8057f92012-08-02 13:45:54 +0100268 if (!driver || !qemu_opt_has_help_opt(opts)) {
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600269 return 0;
270 }
271
Markus Armbruster33fe9682015-10-01 10:59:59 +0200272 if (!object_class_by_name(driver)) {
273 const char *typename = find_typename_by_alias(driver);
274
275 if (typename) {
276 driver = typename;
277 }
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600278 }
279
Stefan Hajnoczief523582014-07-09 14:01:32 +0200280 prop_list = qmp_device_list_properties(driver, &local_err);
Gonglei0722eba2014-09-16 10:19:33 +0800281 if (local_err) {
Eduardo Habkost5185f0e2014-11-01 13:56:10 -0200282 goto error;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600283 }
Stefan Hajnoczief523582014-07-09 14:01:32 +0200284
285 for (prop = prop_list; prop; prop = prop->next) {
Gonglei07d09c52014-10-07 14:33:23 +0800286 error_printf("%s.%s=%s", driver,
Stefan Hajnoczief523582014-07-09 14:01:32 +0200287 prop->value->name,
288 prop->value->type);
Gonglei07d09c52014-10-07 14:33:23 +0800289 if (prop->value->has_description) {
290 error_printf(" (%s)\n", prop->value->description);
291 } else {
292 error_printf("\n");
293 }
Stefan Hajnoczief523582014-07-09 14:01:32 +0200294 }
295
296 qapi_free_DevicePropertyInfoList(prop_list);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600297 return 1;
Eduardo Habkost5185f0e2014-11-01 13:56:10 -0200298
299error:
Markus Armbruster78288672015-12-18 16:35:07 +0100300 error_report_err(local_err);
Eduardo Habkost5185f0e2014-11-01 13:56:10 -0200301 return 1;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600302}
303
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600304static Object *qdev_get_peripheral(void)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600305{
Anthony Liguori8b45d442011-12-23 09:08:05 -0600306 static Object *dev;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600307
308 if (dev == NULL) {
Andreas Färberdfe47e72012-04-05 13:21:46 +0200309 dev = container_get(qdev_get_machine(), "/peripheral");
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600310 }
311
Anthony Liguori8b45d442011-12-23 09:08:05 -0600312 return dev;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600313}
314
Anthony Liguori57c9faf2012-01-30 08:55:55 -0600315static Object *qdev_get_peripheral_anon(void)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600316{
Anthony Liguori8b45d442011-12-23 09:08:05 -0600317 static Object *dev;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600318
319 if (dev == NULL) {
Andreas Färberdfe47e72012-04-05 13:21:46 +0200320 dev = container_get(qdev_get_machine(), "/peripheral-anon");
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600321 }
322
Anthony Liguori8b45d442011-12-23 09:08:05 -0600323 return dev;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600324}
325
Eric Blake50b7b002015-09-10 10:19:16 -0600326static void qbus_list_bus(DeviceState *dev, Error **errp)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600327{
328 BusState *child;
329 const char *sep = " ";
330
Eric Blake50b7b002015-09-10 10:19:16 -0600331 error_append_hint(errp, "child buses at \"%s\":",
332 dev->id ? dev->id : object_get_typename(OBJECT(dev)));
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600333 QLIST_FOREACH(child, &dev->child_bus, sibling) {
Eric Blake50b7b002015-09-10 10:19:16 -0600334 error_append_hint(errp, "%s\"%s\"", sep, child->name);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600335 sep = ", ";
336 }
Markus Armbruster543202c2015-12-17 17:35:14 +0100337 error_append_hint(errp, "\n");
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600338}
339
Eric Blake50b7b002015-09-10 10:19:16 -0600340static void qbus_list_dev(BusState *bus, Error **errp)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600341{
Anthony Liguori0866aca2011-12-23 15:34:39 -0600342 BusChild *kid;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600343 const char *sep = " ";
344
Eric Blake50b7b002015-09-10 10:19:16 -0600345 error_append_hint(errp, "devices at \"%s\":", bus->name);
Anthony Liguori0866aca2011-12-23 15:34:39 -0600346 QTAILQ_FOREACH(kid, &bus->children, sibling) {
347 DeviceState *dev = kid->child;
Eric Blake50b7b002015-09-10 10:19:16 -0600348 error_append_hint(errp, "%s\"%s\"", sep,
349 object_get_typename(OBJECT(dev)));
350 if (dev->id) {
351 error_append_hint(errp, "/\"%s\"", dev->id);
352 }
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600353 sep = ", ";
354 }
Markus Armbruster543202c2015-12-17 17:35:14 +0100355 error_append_hint(errp, "\n");
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600356}
357
358static BusState *qbus_find_bus(DeviceState *dev, char *elem)
359{
360 BusState *child;
361
362 QLIST_FOREACH(child, &dev->child_bus, sibling) {
363 if (strcmp(child->name, elem) == 0) {
364 return child;
365 }
366 }
367 return NULL;
368}
369
370static DeviceState *qbus_find_dev(BusState *bus, char *elem)
371{
Anthony Liguori0866aca2011-12-23 15:34:39 -0600372 BusChild *kid;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600373
374 /*
375 * try to match in order:
376 * (1) instance id, if present
377 * (2) driver name
378 * (3) driver alias, if present
379 */
Anthony Liguori0866aca2011-12-23 15:34:39 -0600380 QTAILQ_FOREACH(kid, &bus->children, sibling) {
381 DeviceState *dev = kid->child;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600382 if (dev->id && strcmp(dev->id, elem) == 0) {
383 return dev;
384 }
385 }
Anthony Liguori0866aca2011-12-23 15:34:39 -0600386 QTAILQ_FOREACH(kid, &bus->children, sibling) {
387 DeviceState *dev = kid->child;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600388 if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
389 return dev;
390 }
391 }
Anthony Liguori0866aca2011-12-23 15:34:39 -0600392 QTAILQ_FOREACH(kid, &bus->children, sibling) {
393 DeviceState *dev = kid->child;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600394 DeviceClass *dc = DEVICE_GET_CLASS(dev);
395
396 if (qdev_class_has_alias(dc) &&
397 strcmp(qdev_class_get_alias(dc), elem) == 0) {
398 return dev;
399 }
400 }
401 return NULL;
402}
403
Markus Armbrustera5ec4942015-03-11 17:26:31 +0100404static inline bool qbus_is_full(BusState *bus)
405{
406 BusClass *bus_class = BUS_GET_CLASS(bus);
407 return bus_class->max_dev && bus->max_index >= bus_class->max_dev;
408}
409
410/*
411 * Search the tree rooted at @bus for a bus.
412 * If @name, search for a bus with that name. Note that bus names
413 * need not be unique. Yes, that's screwed up.
414 * Else search for a bus that is a subtype of @bus_typename.
415 * If more than one exists, prefer one that can take another device.
416 * Return the bus if found, else %NULL.
417 */
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600418static BusState *qbus_find_recursive(BusState *bus, const char *name,
Anthony Liguori0d936922012-05-02 09:00:20 +0200419 const char *bus_typename)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600420{
Anthony Liguori0866aca2011-12-23 15:34:39 -0600421 BusChild *kid;
Markus Armbrustera5ec4942015-03-11 17:26:31 +0100422 BusState *pick, *child, *ret;
423 bool match;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600424
Markus Armbrustera5ec4942015-03-11 17:26:31 +0100425 assert(name || bus_typename);
426 if (name) {
427 match = !strcmp(bus->name, name);
428 } else {
429 match = !!object_dynamic_cast(OBJECT(bus), bus_typename);
KONRAD Frederic1395af62013-01-15 00:08:00 +0100430 }
Markus Armbrustera5ec4942015-03-11 17:26:31 +0100431
432 if (match && !qbus_is_full(bus)) {
433 return bus; /* root matches and isn't full */
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600434 }
435
Markus Armbrustera5ec4942015-03-11 17:26:31 +0100436 pick = match ? bus : NULL;
437
Anthony Liguori0866aca2011-12-23 15:34:39 -0600438 QTAILQ_FOREACH(kid, &bus->children, sibling) {
439 DeviceState *dev = kid->child;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600440 QLIST_FOREACH(child, &dev->child_bus, sibling) {
Anthony Liguori0d936922012-05-02 09:00:20 +0200441 ret = qbus_find_recursive(child, name, bus_typename);
Markus Armbrustera5ec4942015-03-11 17:26:31 +0100442 if (ret && !qbus_is_full(ret)) {
443 return ret; /* a descendant matches and isn't full */
444 }
445 if (ret && !pick) {
446 pick = ret;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600447 }
448 }
449 }
Markus Armbrustera5ec4942015-03-11 17:26:31 +0100450
451 /* root or a descendant matches, but is full */
452 return pick;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600453}
454
Markus Armbrusterd2828422015-03-11 19:16:04 +0100455static BusState *qbus_find(const char *path, Error **errp)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600456{
457 DeviceState *dev;
458 BusState *bus;
459 char elem[128];
460 int pos, len;
461
462 /* find start element */
463 if (path[0] == '/') {
464 bus = sysbus_get_default();
465 pos = 0;
466 } else {
467 if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
468 assert(!path[0]);
469 elem[0] = len = 0;
470 }
471 bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
472 if (!bus) {
Markus Armbrusterd2828422015-03-11 19:16:04 +0100473 error_setg(errp, "Bus '%s' not found", elem);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600474 return NULL;
475 }
476 pos = len;
477 }
478
479 for (;;) {
480 assert(path[pos] == '/' || !path[pos]);
481 while (path[pos] == '/') {
482 pos++;
483 }
484 if (path[pos] == '\0') {
Markus Armbrustered238ba2015-03-11 18:39:16 +0100485 break;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600486 }
487
488 /* find device */
489 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
Stefan Weildfc6f862013-07-25 18:21:28 +0200490 g_assert_not_reached();
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600491 elem[0] = len = 0;
492 }
493 pos += len;
494 dev = qbus_find_dev(bus, elem);
495 if (!dev) {
Markus Armbruster75158eb2015-03-16 08:57:47 +0100496 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
497 "Device '%s' not found", elem);
Eric Blake50b7b002015-09-10 10:19:16 -0600498 qbus_list_dev(bus, errp);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600499 return NULL;
500 }
501
502 assert(path[pos] == '/' || !path[pos]);
503 while (path[pos] == '/') {
504 pos++;
505 }
506 if (path[pos] == '\0') {
507 /* last specified element is a device. If it has exactly
508 * one child bus accept it nevertheless */
Markus Armbrustered238ba2015-03-11 18:39:16 +0100509 if (dev->num_child_bus == 1) {
510 bus = QLIST_FIRST(&dev->child_bus);
511 break;
512 }
513 if (dev->num_child_bus) {
Markus Armbrusterd2828422015-03-11 19:16:04 +0100514 error_setg(errp, "Device '%s' has multiple child buses",
515 elem);
Eric Blake50b7b002015-09-10 10:19:16 -0600516 qbus_list_bus(dev, errp);
Markus Armbrustered238ba2015-03-11 18:39:16 +0100517 } else {
Markus Armbrusterd2828422015-03-11 19:16:04 +0100518 error_setg(errp, "Device '%s' has no child bus", elem);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600519 }
Markus Armbrustered238ba2015-03-11 18:39:16 +0100520 return NULL;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600521 }
522
523 /* find bus */
524 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
Stefan Weildfc6f862013-07-25 18:21:28 +0200525 g_assert_not_reached();
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600526 elem[0] = len = 0;
527 }
528 pos += len;
529 bus = qbus_find_bus(dev, elem);
530 if (!bus) {
Markus Armbrusterd2828422015-03-11 19:16:04 +0100531 error_setg(errp, "Bus '%s' not found", elem);
Eric Blake50b7b002015-09-10 10:19:16 -0600532 qbus_list_bus(dev, errp);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600533 return NULL;
534 }
535 }
Markus Armbrustered238ba2015-03-11 18:39:16 +0100536
537 if (qbus_is_full(bus)) {
Markus Armbrusterd2828422015-03-11 19:16:04 +0100538 error_setg(errp, "Bus '%s' is full", path);
Markus Armbrustered238ba2015-03-11 18:39:16 +0100539 return NULL;
540 }
541 return bus;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600542}
543
Juergen Grossce49b732016-11-22 07:10:57 +0100544void qdev_set_id(DeviceState *dev, const char *id)
545{
546 if (id) {
547 dev->id = id;
548 }
549
550 if (dev->id) {
551 object_property_add_child(qdev_get_peripheral(), dev->id,
552 OBJECT(dev), NULL);
553 } else {
554 static int anon_count;
555 gchar *name = g_strdup_printf("device[%d]", anon_count++);
556 object_property_add_child(qdev_get_peripheral_anon(), name,
557 OBJECT(dev), NULL);
558 g_free(name);
559 }
560}
561
Markus Armbrusterf006cf72015-03-12 14:00:41 +0100562DeviceState *qdev_device_add(QemuOpts *opts, Error **errp)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600563{
Andreas Färberf4d85792013-08-24 01:21:22 +0200564 DeviceClass *dc;
Juergen Grossce49b732016-11-22 07:10:57 +0100565 const char *driver, *path;
Andreas Färber2bcb0c62013-10-07 16:17:54 +0200566 DeviceState *dev;
Andreas Färber2f7bd822013-04-16 03:50:21 +0200567 BusState *bus = NULL;
Andreas Färber852e2c52013-10-07 16:42:34 +0200568 Error *err = NULL;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600569
570 driver = qemu_opt_get(opts, "driver");
571 if (!driver) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +0100572 error_setg(errp, QERR_MISSING_PARAMETER, "driver");
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600573 return NULL;
574 }
575
576 /* find driver */
Markus Armbrusterf006cf72015-03-12 14:00:41 +0100577 dc = qdev_get_device_class(&driver, errp);
578 if (!dc) {
Markus Armbruster7ea5e782013-11-28 17:27:03 +0100579 return NULL;
580 }
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600581
582 /* find bus */
583 path = qemu_opt_get(opts, "bus");
584 if (path != NULL) {
Markus Armbrusterf006cf72015-03-12 14:00:41 +0100585 bus = qbus_find(path, errp);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600586 if (!bus) {
587 return NULL;
588 }
Andreas Färberf4d85792013-08-24 01:21:22 +0200589 if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) {
Markus Armbrusterf006cf72015-03-12 14:00:41 +0100590 error_setg(errp, "Device '%s' can't go on %s bus",
591 driver, object_get_typename(OBJECT(bus)));
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600592 return NULL;
593 }
Andreas Färberf4d85792013-08-24 01:21:22 +0200594 } else if (dc->bus_type != NULL) {
595 bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type);
Markus Armbrustera5ec4942015-03-11 17:26:31 +0100596 if (!bus || qbus_is_full(bus)) {
Markus Armbrusterf006cf72015-03-12 14:00:41 +0100597 error_setg(errp, "No '%s' bus found for device '%s'",
598 dc->bus_type, driver);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600599 return NULL;
600 }
601 }
Igor Mammedov39b888b2014-09-26 09:28:17 +0000602 if (qdev_hotplug && bus && !qbus_is_hotpluggable(bus)) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +0100603 error_setg(errp, QERR_BUS_NO_HOTPLUG, bus->name);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600604 return NULL;
605 }
606
Juan Quintelab06424d2017-03-22 17:34:27 +0100607 if (!migration_is_idle()) {
608 error_setg(errp, "device_add not allowed while migrating");
609 return NULL;
610 }
611
Amos Kong7b030942014-03-03 15:57:55 +0800612 /* create device */
Andreas Färber2bcb0c62013-10-07 16:17:54 +0200613 dev = DEVICE(object_new(driver));
Andreas Färber2f7bd822013-04-16 03:50:21 +0200614
615 if (bus) {
Andreas Färber2bcb0c62013-10-07 16:17:54 +0200616 qdev_set_parent_bus(dev, bus);
Andreas Färber2f7bd822013-04-16 03:50:21 +0200617 }
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600618
Juergen Grossce49b732016-11-22 07:10:57 +0100619 qdev_set_id(dev, qemu_opts_id(opts));
Bandan Das52aa17c2014-02-26 10:32:40 -0700620
Amos Kong7b030942014-03-03 15:57:55 +0800621 /* set properties */
Markus Armbruster4caa4892015-03-12 13:58:02 +0100622 if (qemu_opt_foreach(opts, set_property, dev, &err)) {
Markus Armbrusterf006cf72015-03-12 14:00:41 +0100623 error_propagate(errp, err);
Amos Kong7b030942014-03-03 15:57:55 +0800624 object_unparent(OBJECT(dev));
625 object_unref(OBJECT(dev));
626 return NULL;
627 }
628
Bandan Das52aa17c2014-02-26 10:32:40 -0700629 dev->opts = opts;
Andreas Färber852e2c52013-10-07 16:42:34 +0200630 object_property_set_bool(OBJECT(dev), true, "realized", &err);
631 if (err != NULL) {
Markus Armbrusterf006cf72015-03-12 14:00:41 +0100632 error_propagate(errp, err);
Bandan Das52aa17c2014-02-26 10:32:40 -0700633 dev->opts = NULL;
Andreas Färber852e2c52013-10-07 16:42:34 +0200634 object_unparent(OBJECT(dev));
Andreas Färber2bcb0c62013-10-07 16:17:54 +0200635 object_unref(OBJECT(dev));
Paolo Bonzinif424d5c2012-03-27 18:38:46 +0200636 return NULL;
637 }
Andreas Färber2bcb0c62013-10-07 16:17:54 +0200638 return dev;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600639}
640
641
642#define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
643static void qbus_print(Monitor *mon, BusState *bus, int indent);
644
645static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
Paolo Bonzinibce54472012-03-28 18:12:47 +0200646 int indent)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600647{
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600648 if (!props)
649 return;
Paolo Bonzinid8229792012-02-02 09:47:13 +0100650 for (; props->name; props++) {
651 Error *err = NULL;
652 char *value;
653 char *legacy_name = g_strdup_printf("legacy-%s", props->name);
654 if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
655 value = object_property_get_str(OBJECT(dev), legacy_name, &err);
656 } else {
Paolo Bonzinidae3bda2014-02-08 11:01:51 +0100657 value = object_property_print(OBJECT(dev), props->name, true, &err);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600658 }
Paolo Bonzinid8229792012-02-02 09:47:13 +0100659 g_free(legacy_name);
660
661 if (err) {
662 error_free(err);
663 continue;
664 }
Paolo Bonzinibce54472012-03-28 18:12:47 +0200665 qdev_printf("%s = %s\n", props->name,
Paolo Bonzinid8229792012-02-02 09:47:13 +0100666 value && *value ? value : "<null>");
667 g_free(value);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600668 }
669}
670
Anthony Liguori0d936922012-05-02 09:00:20 +0200671static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
672{
673 BusClass *bc = BUS_GET_CLASS(bus);
674
675 if (bc->print_dev) {
676 bc->print_dev(mon, dev, indent);
677 }
678}
679
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600680static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
681{
Paolo Bonzinibce54472012-03-28 18:12:47 +0200682 ObjectClass *class;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600683 BusState *child;
Peter Crosthwaitea5f54292014-05-19 23:30:58 -0700684 NamedGPIOList *ngl;
685
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600686 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
687 dev->id ? dev->id : "");
688 indent += 2;
Peter Crosthwaitea5f54292014-05-19 23:30:58 -0700689 QLIST_FOREACH(ngl, &dev->gpios, node) {
690 if (ngl->num_in) {
691 qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "",
692 ngl->num_in);
693 }
694 if (ngl->num_out) {
695 qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "",
696 ngl->num_out);
697 }
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600698 }
Paolo Bonzinibce54472012-03-28 18:12:47 +0200699 class = object_get_class(OBJECT(dev));
700 do {
701 qdev_print_props(mon, dev, DEVICE_CLASS(class)->props, indent);
702 class = object_class_get_parent(class);
703 } while (class != object_class_by_name(TYPE_DEVICE));
Gerd Hoffmannda9fbe72012-07-11 12:21:23 +0200704 bus_print_dev(dev->parent_bus, mon, dev, indent);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600705 QLIST_FOREACH(child, &dev->child_bus, sibling) {
706 qbus_print(mon, child, indent);
707 }
708}
709
710static void qbus_print(Monitor *mon, BusState *bus, int indent)
711{
Anthony Liguori0866aca2011-12-23 15:34:39 -0600712 BusChild *kid;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600713
714 qdev_printf("bus: %s\n", bus->name);
715 indent += 2;
Anthony Liguori0d936922012-05-02 09:00:20 +0200716 qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
Anthony Liguori0866aca2011-12-23 15:34:39 -0600717 QTAILQ_FOREACH(kid, &bus->children, sibling) {
718 DeviceState *dev = kid->child;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600719 qdev_print(mon, dev, indent);
720 }
721}
722#undef qdev_printf
723
Markus Armbruster1ce6be22015-02-06 14:18:24 +0100724void hmp_info_qtree(Monitor *mon, const QDict *qdict)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600725{
726 if (sysbus_get_default())
727 qbus_print(mon, sysbus_get_default(), 0);
728}
729
Markus Armbruster1ce6be22015-02-06 14:18:24 +0100730void hmp_info_qdm(Monitor *mon, const QDict *qdict)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600731{
Markus Armbrustera3400ae2013-10-10 15:00:21 +0200732 qdev_print_devinfos(true);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600733}
734
Andreas Färbera01ff752014-05-07 17:03:18 +0200735typedef struct QOMCompositionState {
736 Monitor *mon;
737 int indent;
738} QOMCompositionState;
739
740static void print_qom_composition(Monitor *mon, Object *obj, int indent);
741
742static int print_qom_composition_child(Object *obj, void *opaque)
743{
744 QOMCompositionState *s = opaque;
745
746 print_qom_composition(s->mon, obj, s->indent);
747
748 return 0;
749}
750
751static void print_qom_composition(Monitor *mon, Object *obj, int indent)
752{
753 QOMCompositionState s = {
754 .mon = mon,
755 .indent = indent + 2,
756 };
757 char *name;
758
759 if (obj == object_get_root()) {
760 name = g_strdup("");
761 } else {
762 name = object_get_canonical_path_component(obj);
763 }
764 monitor_printf(mon, "%*s/%s (%s)\n", indent, "", name,
765 object_get_typename(obj));
766 g_free(name);
767 object_child_foreach(obj, print_qom_composition_child, &s);
768}
769
770void hmp_info_qom_tree(Monitor *mon, const QDict *dict)
771{
772 const char *path = qdict_get_try_str(dict, "path");
773 Object *obj;
774 bool ambiguous = false;
775
776 if (path) {
777 obj = object_resolve_path(path, &ambiguous);
778 if (!obj) {
779 monitor_printf(mon, "Path '%s' could not be resolved.\n", path);
780 return;
781 }
782 if (ambiguous) {
783 monitor_printf(mon, "Warning: Path '%s' is ambiguous.\n", path);
784 return;
785 }
786 } else {
787 obj = qdev_get_machine();
788 }
789 print_qom_composition(mon, obj, 0);
790}
791
Markus Armbruster485febc2015-03-13 17:25:50 +0100792void qmp_device_add(QDict *qdict, QObject **ret_data, Error **errp)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600793{
Luiz Capitulino4e899782012-04-18 17:24:01 -0300794 Error *local_err = NULL;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600795 QemuOpts *opts;
Paolo Bonzinib09995a2013-01-25 14:12:37 +0100796 DeviceState *dev;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600797
Luiz Capitulino4e899782012-04-18 17:24:01 -0300798 opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +0100799 if (local_err) {
Markus Armbruster485febc2015-03-13 17:25:50 +0100800 error_propagate(errp, local_err);
801 return;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600802 }
803 if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
804 qemu_opts_del(opts);
Markus Armbruster485febc2015-03-13 17:25:50 +0100805 return;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600806 }
Markus Armbrusterf006cf72015-03-12 14:00:41 +0100807 dev = qdev_device_add(opts, &local_err);
Paolo Bonzinib09995a2013-01-25 14:12:37 +0100808 if (!dev) {
Markus Armbruster485febc2015-03-13 17:25:50 +0100809 error_propagate(errp, local_err);
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600810 qemu_opts_del(opts);
Markus Armbruster485febc2015-03-13 17:25:50 +0100811 return;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600812 }
Paolo Bonzinib09995a2013-01-25 14:12:37 +0100813 object_unref(OBJECT(dev));
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600814}
815
Kevin Wolf6c1db522016-09-20 13:38:41 +0200816static DeviceState *find_device_state(const char *id, Error **errp)
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600817{
Igor Mammedovb6cc36a2014-10-02 10:08:45 +0000818 Object *obj;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600819
Daniel P. Berrange6287d822015-09-11 13:33:56 +0100820 if (id[0] == '/') {
821 obj = object_resolve_path(id, NULL);
822 } else {
823 char *root_path = object_get_canonical_path(qdev_get_peripheral());
824 char *path = g_strdup_printf("%s/%s", root_path, id);
825
826 g_free(root_path);
827 obj = object_resolve_path_type(path, TYPE_DEVICE, NULL);
828 g_free(path);
829 }
Igor Mammedovb6cc36a2014-10-02 10:08:45 +0000830
831 if (!obj) {
Markus Armbruster75158eb2015-03-16 08:57:47 +0100832 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
833 "Device '%s' not found", id);
Kevin Wolf6c1db522016-09-20 13:38:41 +0200834 return NULL;
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600835 }
Luiz Capitulino56f91072012-03-14 17:37:38 -0300836
Daniel P. Berrange6287d822015-09-11 13:33:56 +0100837 if (!object_dynamic_cast(obj, TYPE_DEVICE)) {
838 error_setg(errp, "%s is not a hotpluggable device", id);
Kevin Wolf6c1db522016-09-20 13:38:41 +0200839 return NULL;
Daniel P. Berrange6287d822015-09-11 13:33:56 +0100840 }
841
Kevin Wolf6c1db522016-09-20 13:38:41 +0200842 return DEVICE(obj);
843}
844
Juan Quintela32900672017-03-28 11:22:51 +0200845void qdev_unplug(DeviceState *dev, Error **errp)
846{
847 DeviceClass *dc = DEVICE_GET_CLASS(dev);
848 HotplugHandler *hotplug_ctrl;
849 HotplugHandlerClass *hdc;
850
851 if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) {
852 error_setg(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name);
853 return;
854 }
855
856 if (!dc->hotpluggable) {
857 error_setg(errp, QERR_DEVICE_NO_HOTPLUG,
858 object_get_typename(OBJECT(dev)));
859 return;
860 }
861
Juan Quintelab06424d2017-03-22 17:34:27 +0100862 if (!migration_is_idle()) {
863 error_setg(errp, "device_del not allowed while migrating");
864 return;
865 }
866
Juan Quintela32900672017-03-28 11:22:51 +0200867 qdev_hot_removed = true;
868
869 hotplug_ctrl = qdev_get_hotplug_handler(dev);
870 /* hotpluggable device MUST have HotplugHandler, if it doesn't
871 * then something is very wrong with it */
872 g_assert(hotplug_ctrl);
873
874 /* If device supports async unplug just request it to be done,
875 * otherwise just remove it synchronously */
876 hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl);
877 if (hdc->unplug_request) {
878 hotplug_handler_unplug_request(hotplug_ctrl, dev, errp);
879 } else {
880 hotplug_handler_unplug(hotplug_ctrl, dev, errp);
881 }
882}
883
Kevin Wolf6c1db522016-09-20 13:38:41 +0200884void qmp_device_del(const char *id, Error **errp)
885{
886 DeviceState *dev = find_device_state(id, errp);
887 if (dev != NULL) {
888 qdev_unplug(dev, errp);
889 }
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600890}
891
Kevin Wolf9680cae2016-09-20 13:38:42 +0200892BlockBackend *blk_by_qdev_id(const char *id, Error **errp)
893{
894 DeviceState *dev;
895 BlockBackend *blk;
896
897 dev = find_device_state(id, errp);
898 if (dev == NULL) {
899 return NULL;
900 }
901
902 blk = blk_by_dev(dev);
903 if (!blk) {
904 error_setg(errp, "Device does not have a block device backend");
905 }
906 return blk;
907}
908
Anthony Liguoriee46d8a2011-12-22 15:24:20 -0600909void qdev_machine_init(void)
910{
911 qdev_get_peripheral_anon();
912 qdev_get_peripheral();
913}
Paolo Bonzini4d454572012-11-26 16:03:42 +0100914
915QemuOptsList qemu_device_opts = {
916 .name = "device",
917 .implied_opt_name = "driver",
918 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
919 .desc = {
920 /*
921 * no elements => accept any
922 * sanity checking will happen later
923 * when setting device properties
924 */
925 { /* end of list */ }
926 },
927};
928
929QemuOptsList qemu_global_opts = {
930 .name = "global",
931 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
932 .desc = {
933 {
934 .name = "driver",
935 .type = QEMU_OPT_STRING,
936 },{
937 .name = "property",
938 .type = QEMU_OPT_STRING,
939 },{
940 .name = "value",
941 .type = QEMU_OPT_STRING,
942 },
943 { /* end of list */ }
944 },
945};
946
947int qemu_global_option(const char *str)
948{
949 char driver[64], property[64];
950 QemuOpts *opts;
951 int rc, offset;
952
Paolo Bonzini3751d7c2015-04-09 14:16:19 +0200953 rc = sscanf(str, "%63[^.=].%63[^=]%n", driver, property, &offset);
954 if (rc == 2 && str[offset] == '=') {
955 opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
956 qemu_opt_set(opts, "driver", driver, &error_abort);
957 qemu_opt_set(opts, "property", property, &error_abort);
958 qemu_opt_set(opts, "value", str + offset + 1, &error_abort);
959 return 0;
960 }
961
Markus Armbruster70b94332015-02-13 12:50:26 +0100962 opts = qemu_opts_parse_noisily(&qemu_global_opts, str, false);
Paolo Bonzini3751d7c2015-04-09 14:16:19 +0200963 if (!opts) {
Paolo Bonzini4d454572012-11-26 16:03:42 +0100964 return -1;
965 }
966
Paolo Bonzini4d454572012-11-26 16:03:42 +0100967 return 0;
968}