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/>.
22 #include "qmp-commands.h"
25 * Aliases were a bad idea from the start. Let's keep them
26 * from spreading further.
28 typedef struct QDevAlias
34 static const QDevAlias qdev_alias_table
[] = {
35 { "virtio-blk-pci", "virtio-blk" },
36 { "virtio-net-pci", "virtio-net" },
37 { "virtio-serial-pci", "virtio-serial" },
38 { "virtio-balloon-pci", "virtio-balloon" },
39 { "virtio-blk-s390", "virtio-blk" },
40 { "virtio-net-s390", "virtio-net" },
41 { "virtio-serial-s390", "virtio-serial" },
42 { "lsi53c895a", "lsi" },
43 { "ich9-ahci", "ahci" },
47 static const char *qdev_class_get_alias(DeviceClass
*dc
)
49 const char *typename
= object_class_get_name(OBJECT_CLASS(dc
));
52 for (i
= 0; qdev_alias_table
[i
].typename
; i
++) {
53 if (strcmp(qdev_alias_table
[i
].typename
, typename
) == 0) {
54 return qdev_alias_table
[i
].alias
;
61 static bool qdev_class_has_alias(DeviceClass
*dc
)
63 return (qdev_class_get_alias(dc
) != NULL
);
66 static void qdev_print_devinfo(ObjectClass
*klass
, void *opaque
)
69 bool *show_no_user
= opaque
;
71 dc
= (DeviceClass
*)object_class_dynamic_cast(klass
, TYPE_DEVICE
);
73 if (!dc
|| (show_no_user
&& !*show_no_user
&& dc
->no_user
)) {
77 error_printf("name \"%s\"", object_class_get_name(klass
));
79 error_printf(", bus %s", dc
->bus_info
->name
);
81 if (qdev_class_has_alias(dc
)) {
82 error_printf(", alias \"%s\"", qdev_class_get_alias(dc
));
85 error_printf(", desc \"%s\"", dc
->desc
);
88 error_printf(", no-user");
93 static int set_property(const char *name
, const char *value
, void *opaque
)
95 DeviceState
*dev
= opaque
;
97 if (strcmp(name
, "driver") == 0)
99 if (strcmp(name
, "bus") == 0)
102 if (qdev_prop_parse(dev
, name
, value
) == -1) {
108 static const char *find_typename_by_alias(const char *alias
)
112 for (i
= 0; qdev_alias_table
[i
].alias
; i
++) {
113 if (strcmp(qdev_alias_table
[i
].alias
, alias
) == 0) {
114 return qdev_alias_table
[i
].typename
;
121 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
);
152 for (prop
= DEVICE_CLASS(klass
)->props
; prop
&& prop
->name
; prop
++) {
154 * TODO Properties without a parser are just for dirty hacks.
155 * qdev_prop_ptr is the only such PropertyInfo. It's marked
156 * for removal. This conditional should be removed along with
159 if (!prop
->info
->set
) {
160 continue; /* no way to set it, don't show */
162 error_printf("%s.%s=%s\n", driver
, prop
->name
,
163 prop
->info
->legacy_name
?: prop
->info
->name
);
165 klass
= object_class_get_parent(klass
);
166 } while (klass
!= object_class_by_name(TYPE_DEVICE
));
170 static Object
*qdev_get_peripheral(void)
175 dev
= container_get(qdev_get_machine(), "/peripheral");
181 static Object
*qdev_get_peripheral_anon(void)
186 dev
= container_get(qdev_get_machine(), "/peripheral-anon");
192 static void qbus_list_bus(DeviceState
*dev
)
195 const char *sep
= " ";
197 error_printf("child busses at \"%s\":",
198 dev
->id
? dev
->id
: object_get_typename(OBJECT(dev
)));
199 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
200 error_printf("%s\"%s\"", sep
, child
->name
);
206 static void qbus_list_dev(BusState
*bus
)
209 const char *sep
= " ";
211 error_printf("devices at \"%s\":", bus
->name
);
212 QTAILQ_FOREACH(dev
, &bus
->children
, sibling
) {
213 error_printf("%s\"%s\"", sep
, object_get_typename(OBJECT(dev
)));
215 error_printf("/\"%s\"", dev
->id
);
221 static BusState
*qbus_find_bus(DeviceState
*dev
, char *elem
)
225 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
226 if (strcmp(child
->name
, elem
) == 0) {
233 static DeviceState
*qbus_find_dev(BusState
*bus
, char *elem
)
238 * try to match in order:
239 * (1) instance id, if present
241 * (3) driver alias, if present
243 QTAILQ_FOREACH(dev
, &bus
->children
, sibling
) {
244 if (dev
->id
&& strcmp(dev
->id
, elem
) == 0) {
248 QTAILQ_FOREACH(dev
, &bus
->children
, sibling
) {
249 if (strcmp(object_get_typename(OBJECT(dev
)), elem
) == 0) {
253 QTAILQ_FOREACH(dev
, &bus
->children
, sibling
) {
254 DeviceClass
*dc
= DEVICE_GET_CLASS(dev
);
256 if (qdev_class_has_alias(dc
) &&
257 strcmp(qdev_class_get_alias(dc
), elem
) == 0) {
264 static BusState
*qbus_find_recursive(BusState
*bus
, const char *name
,
268 BusState
*child
, *ret
;
271 if (name
&& (strcmp(bus
->name
, name
) != 0)) {
274 if (info
&& (bus
->info
!= info
)) {
281 QTAILQ_FOREACH(dev
, &bus
->children
, sibling
) {
282 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
283 ret
= qbus_find_recursive(child
, name
, info
);
292 static BusState
*qbus_find(const char *path
)
299 /* find start element */
300 if (path
[0] == '/') {
301 bus
= sysbus_get_default();
304 if (sscanf(path
, "%127[^/]%n", elem
, &len
) != 1) {
308 bus
= qbus_find_recursive(sysbus_get_default(), elem
, NULL
);
310 qerror_report(QERR_BUS_NOT_FOUND
, elem
);
317 assert(path
[pos
] == '/' || !path
[pos
]);
318 while (path
[pos
] == '/') {
321 if (path
[pos
] == '\0') {
326 if (sscanf(path
+pos
, "%127[^/]%n", elem
, &len
) != 1) {
331 dev
= qbus_find_dev(bus
, elem
);
333 qerror_report(QERR_DEVICE_NOT_FOUND
, elem
);
334 if (!monitor_cur_is_qmp()) {
340 assert(path
[pos
] == '/' || !path
[pos
]);
341 while (path
[pos
] == '/') {
344 if (path
[pos
] == '\0') {
345 /* last specified element is a device. If it has exactly
346 * one child bus accept it nevertheless */
347 switch (dev
->num_child_bus
) {
349 qerror_report(QERR_DEVICE_NO_BUS
, elem
);
352 return QLIST_FIRST(&dev
->child_bus
);
354 qerror_report(QERR_DEVICE_MULTIPLE_BUSSES
, elem
);
355 if (!monitor_cur_is_qmp()) {
363 if (sscanf(path
+pos
, "%127[^/]%n", elem
, &len
) != 1) {
368 bus
= qbus_find_bus(dev
, elem
);
370 qerror_report(QERR_BUS_NOT_FOUND
, elem
);
371 if (!monitor_cur_is_qmp()) {
379 DeviceState
*qdev_device_add(QemuOpts
*opts
)
383 const char *driver
, *path
, *id
;
387 driver
= qemu_opt_get(opts
, "driver");
389 qerror_report(QERR_MISSING_PARAMETER
, "driver");
394 obj
= object_class_by_name(driver
);
396 const char *typename
= find_typename_by_alias(driver
);
400 obj
= object_class_by_name(driver
);
405 qerror_report(QERR_INVALID_PARAMETER_VALUE
, "driver", "device type");
409 k
= DEVICE_CLASS(obj
);
412 path
= qemu_opt_get(opts
, "bus");
414 bus
= qbus_find(path
);
418 if (bus
->info
!= k
->bus_info
) {
419 qerror_report(QERR_BAD_BUS_FOR_DEVICE
,
420 driver
, bus
->info
->name
);
424 bus
= qbus_find_recursive(sysbus_get_default(), NULL
, k
->bus_info
);
426 qerror_report(QERR_NO_BUS_FOR_DEVICE
,
427 driver
, k
->bus_info
->name
);
431 if (qdev_hotplug
&& !bus
->allow_hotplug
) {
432 qerror_report(QERR_BUS_NO_HOTPLUG
, bus
->name
);
437 bus
= sysbus_get_default();
440 /* create device, set properties */
441 qdev
= DEVICE(object_new(driver
));
442 qdev_set_parent_bus(qdev
, bus
);
443 qdev_prop_set_globals(qdev
);
445 id
= qemu_opts_id(opts
);
449 if (qemu_opt_foreach(opts
, set_property
, qdev
, 1) != 0) {
454 object_property_add_child(qdev_get_peripheral(), qdev
->id
,
457 static int anon_count
;
458 gchar
*name
= g_strdup_printf("device[%d]", anon_count
++);
459 object_property_add_child(qdev_get_peripheral_anon(), name
,
463 if (qdev_init(qdev
) < 0) {
464 qerror_report(QERR_DEVICE_INIT_FAILED
, driver
);
472 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
473 static void qbus_print(Monitor
*mon
, BusState
*bus
, int indent
);
475 static void qdev_print_props(Monitor
*mon
, DeviceState
*dev
, Property
*props
,
480 for (; props
->name
; props
++) {
483 char *legacy_name
= g_strdup_printf("legacy-%s", props
->name
);
484 if (object_property_get_type(OBJECT(dev
), legacy_name
, NULL
)) {
485 value
= object_property_get_str(OBJECT(dev
), legacy_name
, &err
);
487 value
= object_property_print(OBJECT(dev
), props
->name
, &err
);
495 qdev_printf("%s = %s\n", props
->name
,
496 value
&& *value
? value
: "<null>");
501 static void qdev_print(Monitor
*mon
, DeviceState
*dev
, int indent
)
505 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev
)),
506 dev
->id
? dev
->id
: "");
508 if (dev
->num_gpio_in
) {
509 qdev_printf("gpio-in %d\n", dev
->num_gpio_in
);
511 if (dev
->num_gpio_out
) {
512 qdev_printf("gpio-out %d\n", dev
->num_gpio_out
);
514 class = object_get_class(OBJECT(dev
));
516 qdev_print_props(mon
, dev
, DEVICE_CLASS(class)->props
, indent
);
517 class = object_class_get_parent(class);
518 } while (class != object_class_by_name(TYPE_DEVICE
));
519 if (dev
->parent_bus
->info
->print_dev
)
520 dev
->parent_bus
->info
->print_dev(mon
, dev
, indent
);
521 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
522 qbus_print(mon
, child
, indent
);
526 static void qbus_print(Monitor
*mon
, BusState
*bus
, int indent
)
528 struct DeviceState
*dev
;
530 qdev_printf("bus: %s\n", bus
->name
);
532 qdev_printf("type %s\n", bus
->info
->name
);
533 QTAILQ_FOREACH(dev
, &bus
->children
, sibling
) {
534 qdev_print(mon
, dev
, indent
);
539 void do_info_qtree(Monitor
*mon
)
541 if (sysbus_get_default())
542 qbus_print(mon
, sysbus_get_default(), 0);
545 void do_info_qdm(Monitor
*mon
)
547 object_class_foreach(qdev_print_devinfo
, TYPE_DEVICE
, false, NULL
);
550 int do_device_add(Monitor
*mon
, const QDict
*qdict
, QObject
**ret_data
)
552 Error
*local_err
= NULL
;
555 opts
= qemu_opts_from_qdict(qemu_find_opts("device"), qdict
, &local_err
);
556 if (error_is_set(&local_err
)) {
557 qerror_report_err(local_err
);
558 error_free(local_err
);
561 if (!monitor_cur_is_qmp() && qdev_device_help(opts
)) {
565 if (!qdev_device_add(opts
)) {
572 void qmp_device_del(const char *id
, Error
**errp
)
576 dev
= qdev_find_recursive(sysbus_get_default(), id
);
578 error_set(errp
, QERR_DEVICE_NOT_FOUND
, id
);
582 qdev_unplug(dev
, errp
);
585 void qdev_machine_init(void)
587 qdev_get_peripheral_anon();
588 qdev_get_peripheral();