2 * Dynamic device configuration and creation.
4 * Copyright (c) 2009 CodeSourcery
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.
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.
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/>.
24 * Aliases were a bad idea from the start. Let's keep them
25 * from spreading further.
27 typedef struct QDevAlias
33 static const QDevAlias qdev_alias_table[] = {
34 { "virtio-blk-pci", "virtio-blk" },
35 { "virtio-net-pci", "virtio-net" },
36 { "virtio-serial-pci", "virtio-serial" },
37 { "virtio-balloon-pci", "virtio-balloon" },
38 { "virtio-blk-s390", "virtio-blk" },
39 { "virtio-net-s390", "virtio-net" },
40 { "virtio-serial-s390", "virtio-serial" },
41 { "lsi53c895a", "lsi" },
42 { "ich9-ahci", "ahci" },
46 static const char *qdev_class_get_alias(DeviceClass *dc)
48 const char *typename = object_class_get_name(OBJECT_CLASS(dc));
51 for (i = 0; qdev_alias_table[i].typename; i++) {
52 if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
53 return qdev_alias_table[i].alias;
60 static bool qdev_class_has_alias(DeviceClass *dc)
62 return (qdev_class_get_alias(dc) != NULL);
65 static void qdev_print_devinfo(ObjectClass *klass, void *opaque)
68 bool *show_no_user = opaque;
70 dc = (DeviceClass *)object_class_dynamic_cast(klass, TYPE_DEVICE);
72 if (!dc || (show_no_user && !*show_no_user && dc->no_user)) {
76 error_printf("name \"%s\"", object_class_get_name(klass));
78 error_printf(", bus %s", dc->bus_info->name);
80 if (qdev_class_has_alias(dc)) {
81 error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
84 error_printf(", desc \"%s\"", dc->desc);
87 error_printf(", no-user");
92 static int set_property(const char *name, const char *value, void *opaque)
94 DeviceState *dev = opaque;
96 if (strcmp(name, "driver") == 0)
98 if (strcmp(name, "bus") == 0)
101 if (qdev_prop_parse(dev, name, value) == -1) {
107 static const char *find_typename_by_alias(const char *alias)
111 for (i = 0; qdev_alias_table[i].alias; i++) {
112 if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
113 return qdev_alias_table[i].typename;
120 int qdev_device_help(QemuOpts *opts)
127 driver = qemu_opt_get(opts, "driver");
128 if (driver && !strcmp(driver, "?")) {
129 bool show_no_user = false;
130 object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, &show_no_user);
134 if (!driver || !qemu_opt_get(opts, "?")) {
138 klass = object_class_by_name(driver);
140 const char *typename = find_typename_by_alias(driver);
144 klass = object_class_by_name(driver);
151 info = DEVICE_CLASS(klass);
153 for (prop = info->props; prop && prop->name; prop++) {
155 * TODO Properties without a parser are just for dirty hacks.
156 * qdev_prop_ptr is the only such PropertyInfo. It's marked
157 * for removal. This conditional should be removed along with
160 if (!prop->info->parse) {
161 continue; /* no way to set it, don't show */
163 error_printf("%s.%s=%s\n", driver, prop->name,
164 prop->info->legacy_name ?: prop->info->name);
166 for (prop = info->bus_info->props; prop && prop->name; prop++) {
167 if (!prop->info->parse) {
168 continue; /* no way to set it, don't show */
170 error_printf("%s.%s=%s\n", driver, prop->name,
171 prop->info->legacy_name ?: prop->info->name);
176 static Object *qdev_get_peripheral(void)
178 static DeviceState *dev;
181 dev = qdev_create(NULL, "container");
182 object_property_add_child(object_get_root(), "peripheral",
184 qdev_init_nofail(dev);
190 static Object *qdev_get_peripheral_anon(void)
192 static DeviceState *dev;
195 dev = qdev_create(NULL, "container");
196 object_property_add_child(object_get_root(), "peripheral-anon",
198 qdev_init_nofail(dev);
204 static void qbus_list_bus(DeviceState *dev)
207 const char *sep = " ";
209 error_printf("child busses at \"%s\":",
210 dev->id ? dev->id : object_get_typename(OBJECT(dev)));
211 QLIST_FOREACH(child, &dev->child_bus, sibling) {
212 error_printf("%s\"%s\"", sep, child->name);
218 static void qbus_list_dev(BusState *bus)
221 const char *sep = " ";
223 error_printf("devices at \"%s\":", bus->name);
224 QTAILQ_FOREACH(dev, &bus->children, sibling) {
225 error_printf("%s\"%s\"", sep, object_get_typename(OBJECT(dev)));
227 error_printf("/\"%s\"", dev->id);
233 static BusState *qbus_find_bus(DeviceState *dev, char *elem)
237 QLIST_FOREACH(child, &dev->child_bus, sibling) {
238 if (strcmp(child->name, elem) == 0) {
245 static DeviceState *qbus_find_dev(BusState *bus, char *elem)
250 * try to match in order:
251 * (1) instance id, if present
253 * (3) driver alias, if present
255 QTAILQ_FOREACH(dev, &bus->children, sibling) {
256 if (dev->id && strcmp(dev->id, elem) == 0) {
260 QTAILQ_FOREACH(dev, &bus->children, sibling) {
261 if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
265 QTAILQ_FOREACH(dev, &bus->children, sibling) {
266 DeviceClass *dc = DEVICE_GET_CLASS(dev);
268 if (qdev_class_has_alias(dc) &&
269 strcmp(qdev_class_get_alias(dc), elem) == 0) {
276 static BusState *qbus_find_recursive(BusState *bus, const char *name,
280 BusState *child, *ret;
283 if (name && (strcmp(bus->name, name) != 0)) {
286 if (info && (bus->info != info)) {
293 QTAILQ_FOREACH(dev, &bus->children, sibling) {
294 QLIST_FOREACH(child, &dev->child_bus, sibling) {
295 ret = qbus_find_recursive(child, name, info);
304 static BusState *qbus_find(const char *path)
311 /* find start element */
312 if (path[0] == '/') {
313 bus = sysbus_get_default();
316 if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
320 bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
322 qerror_report(QERR_BUS_NOT_FOUND, elem);
329 assert(path[pos] == '/' || !path[pos]);
330 while (path[pos] == '/') {
333 if (path[pos] == '\0') {
338 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
343 dev = qbus_find_dev(bus, elem);
345 qerror_report(QERR_DEVICE_NOT_FOUND, elem);
346 if (!monitor_cur_is_qmp()) {
352 assert(path[pos] == '/' || !path[pos]);
353 while (path[pos] == '/') {
356 if (path[pos] == '\0') {
357 /* last specified element is a device. If it has exactly
358 * one child bus accept it nevertheless */
359 switch (dev->num_child_bus) {
361 qerror_report(QERR_DEVICE_NO_BUS, elem);
364 return QLIST_FIRST(&dev->child_bus);
366 qerror_report(QERR_DEVICE_MULTIPLE_BUSSES, elem);
367 if (!monitor_cur_is_qmp()) {
375 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
380 bus = qbus_find_bus(dev, elem);
382 qerror_report(QERR_BUS_NOT_FOUND, elem);
383 if (!monitor_cur_is_qmp()) {
391 DeviceState *qdev_device_add(QemuOpts *opts)
395 const char *driver, *path, *id;
399 driver = qemu_opt_get(opts, "driver");
401 qerror_report(QERR_MISSING_PARAMETER, "driver");
406 obj = object_class_by_name(driver);
408 const char *typename = find_typename_by_alias(driver);
412 obj = object_class_by_name(driver);
417 qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "device type");
421 k = DEVICE_CLASS(obj);
424 path = qemu_opt_get(opts, "bus");
426 bus = qbus_find(path);
430 if (bus->info != k->bus_info) {
431 qerror_report(QERR_BAD_BUS_FOR_DEVICE,
432 driver, bus->info->name);
436 bus = qbus_find_recursive(sysbus_get_default(), NULL, k->bus_info);
438 qerror_report(QERR_NO_BUS_FOR_DEVICE,
439 driver, k->bus_info->name);
443 if (qdev_hotplug && !bus->allow_hotplug) {
444 qerror_report(QERR_BUS_NO_HOTPLUG, bus->name);
449 bus = sysbus_get_default();
452 /* create device, set properties */
453 qdev = DEVICE(object_new(driver));
454 qdev_set_parent_bus(qdev, bus);
455 qdev_prop_set_globals(qdev);
457 id = qemu_opts_id(opts);
460 object_property_add_child(qdev_get_peripheral(), qdev->id,
463 static int anon_count;
464 gchar *name = g_strdup_printf("device[%d]", anon_count++);
465 object_property_add_child(qdev_get_peripheral_anon(), name,
469 if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) {
473 if (qdev_init(qdev) < 0) {
474 qerror_report(QERR_DEVICE_INIT_FAILED, driver);
482 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
483 static void qbus_print(Monitor *mon, BusState *bus, int indent);
485 static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
486 const char *prefix, int indent)
492 while (props->name) {
494 * TODO Properties without a print method are just for dirty
495 * hacks. qdev_prop_ptr is the only such PropertyInfo. It's
496 * marked for removal. The test props->info->print should be
497 * removed along with it.
499 if (props->info->print) {
500 props->info->print(dev, props, buf, sizeof(buf));
501 qdev_printf("%s-prop: %s = %s\n", prefix, props->name, buf);
507 static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
510 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
511 dev->id ? dev->id : "");
513 if (dev->num_gpio_in) {
514 qdev_printf("gpio-in %d\n", dev->num_gpio_in);
516 if (dev->num_gpio_out) {
517 qdev_printf("gpio-out %d\n", dev->num_gpio_out);
519 qdev_print_props(mon, dev, qdev_get_props(dev), "dev", indent);
520 qdev_print_props(mon, dev, dev->parent_bus->info->props, "bus", indent);
521 if (dev->parent_bus->info->print_dev)
522 dev->parent_bus->info->print_dev(mon, dev, indent);
523 QLIST_FOREACH(child, &dev->child_bus, sibling) {
524 qbus_print(mon, child, indent);
528 static void qbus_print(Monitor *mon, BusState *bus, int indent)
530 struct DeviceState *dev;
532 qdev_printf("bus: %s\n", bus->name);
534 qdev_printf("type %s\n", bus->info->name);
535 QTAILQ_FOREACH(dev, &bus->children, sibling) {
536 qdev_print(mon, dev, indent);
541 void do_info_qtree(Monitor *mon)
543 if (sysbus_get_default())
544 qbus_print(mon, sysbus_get_default(), 0);
547 void do_info_qdm(Monitor *mon)
549 object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, NULL);
552 int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
556 opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict);
560 if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
564 if (!qdev_device_add(opts)) {
571 int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
573 const char *id = qdict_get_str(qdict, "id");
576 dev = qdev_find_recursive(sysbus_get_default(), id);
578 qerror_report(QERR_DEVICE_NOT_FOUND, id);
581 return qdev_unplug(dev);
584 void qdev_machine_init(void)
586 qdev_get_peripheral_anon();
587 qdev_get_peripheral();