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"
23 #include "arch_init.h"
26 * Aliases were a bad idea from the start. Let's keep them
27 * from spreading further.
29 typedef struct QDevAlias
36 static const QDevAlias qdev_alias_table
[] = {
37 { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL
& ~QEMU_ARCH_S390X
},
38 { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL
& ~QEMU_ARCH_S390X
},
39 { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL
& ~QEMU_ARCH_S390X
},
40 { "virtio-balloon-pci", "virtio-balloon",
41 QEMU_ARCH_ALL
& ~QEMU_ARCH_S390X
},
42 { "virtio-blk-s390", "virtio-blk", QEMU_ARCH_S390X
},
43 { "virtio-net-s390", "virtio-net", QEMU_ARCH_S390X
},
44 { "virtio-serial-s390", "virtio-serial", QEMU_ARCH_S390X
},
45 { "lsi53c895a", "lsi" },
46 { "ich9-ahci", "ahci" },
50 static const char *qdev_class_get_alias(DeviceClass
*dc
)
52 const char *typename
= object_class_get_name(OBJECT_CLASS(dc
));
55 for (i
= 0; qdev_alias_table
[i
].typename
; i
++) {
56 if (qdev_alias_table
[i
].arch_mask
&&
57 !(qdev_alias_table
[i
].arch_mask
& arch_type
)) {
61 if (strcmp(qdev_alias_table
[i
].typename
, typename
) == 0) {
62 return qdev_alias_table
[i
].alias
;
69 static bool qdev_class_has_alias(DeviceClass
*dc
)
71 return (qdev_class_get_alias(dc
) != NULL
);
74 static void qdev_print_devinfo(ObjectClass
*klass
, void *opaque
)
77 bool *show_no_user
= opaque
;
79 dc
= (DeviceClass
*)object_class_dynamic_cast(klass
, TYPE_DEVICE
);
81 if (!dc
|| (show_no_user
&& !*show_no_user
&& dc
->no_user
)) {
85 error_printf("name \"%s\"", object_class_get_name(klass
));
87 error_printf(", bus %s", dc
->bus_type
);
89 if (qdev_class_has_alias(dc
)) {
90 error_printf(", alias \"%s\"", qdev_class_get_alias(dc
));
93 error_printf(", desc \"%s\"", dc
->desc
);
96 error_printf(", no-user");
101 static int set_property(const char *name
, const char *value
, void *opaque
)
103 DeviceState
*dev
= opaque
;
105 if (strcmp(name
, "driver") == 0)
107 if (strcmp(name
, "bus") == 0)
110 if (qdev_prop_parse(dev
, name
, value
) == -1) {
116 static const char *find_typename_by_alias(const char *alias
)
120 for (i
= 0; qdev_alias_table
[i
].alias
; i
++) {
121 if (qdev_alias_table
[i
].arch_mask
&&
122 !(qdev_alias_table
[i
].arch_mask
& arch_type
)) {
126 if (strcmp(qdev_alias_table
[i
].alias
, alias
) == 0) {
127 return qdev_alias_table
[i
].typename
;
134 int qdev_device_help(QemuOpts
*opts
)
140 driver
= qemu_opt_get(opts
, "driver");
141 if (driver
&& is_help_option(driver
)) {
142 bool show_no_user
= false;
143 object_class_foreach(qdev_print_devinfo
, TYPE_DEVICE
, false, &show_no_user
);
147 if (!driver
|| !qemu_opt_has_help_opt(opts
)) {
151 klass
= object_class_by_name(driver
);
153 const char *typename
= find_typename_by_alias(driver
);
157 klass
= object_class_by_name(driver
);
165 for (prop
= DEVICE_CLASS(klass
)->props
; prop
&& prop
->name
; prop
++) {
167 * TODO Properties without a parser are just for dirty hacks.
168 * qdev_prop_ptr is the only such PropertyInfo. It's marked
169 * for removal. This conditional should be removed along with
172 if (!prop
->info
->set
) {
173 continue; /* no way to set it, don't show */
175 error_printf("%s.%s=%s\n", driver
, prop
->name
,
176 prop
->info
->legacy_name
?: prop
->info
->name
);
178 klass
= object_class_get_parent(klass
);
179 } while (klass
!= object_class_by_name(TYPE_DEVICE
));
183 static Object
*qdev_get_peripheral(void)
188 dev
= container_get(qdev_get_machine(), "/peripheral");
194 static Object
*qdev_get_peripheral_anon(void)
199 dev
= container_get(qdev_get_machine(), "/peripheral-anon");
205 static void qbus_list_bus(DeviceState
*dev
)
208 const char *sep
= " ";
210 error_printf("child busses at \"%s\":",
211 dev
->id
? dev
->id
: object_get_typename(OBJECT(dev
)));
212 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
213 error_printf("%s\"%s\"", sep
, child
->name
);
219 static void qbus_list_dev(BusState
*bus
)
222 const char *sep
= " ";
224 error_printf("devices at \"%s\":", bus
->name
);
225 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
226 DeviceState
*dev
= kid
->child
;
227 error_printf("%s\"%s\"", sep
, object_get_typename(OBJECT(dev
)));
229 error_printf("/\"%s\"", dev
->id
);
235 static BusState
*qbus_find_bus(DeviceState
*dev
, char *elem
)
239 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
240 if (strcmp(child
->name
, elem
) == 0) {
247 static DeviceState
*qbus_find_dev(BusState
*bus
, char *elem
)
252 * try to match in order:
253 * (1) instance id, if present
255 * (3) driver alias, if present
257 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
258 DeviceState
*dev
= kid
->child
;
259 if (dev
->id
&& strcmp(dev
->id
, elem
) == 0) {
263 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
264 DeviceState
*dev
= kid
->child
;
265 if (strcmp(object_get_typename(OBJECT(dev
)), elem
) == 0) {
269 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
270 DeviceState
*dev
= kid
->child
;
271 DeviceClass
*dc
= DEVICE_GET_CLASS(dev
);
273 if (qdev_class_has_alias(dc
) &&
274 strcmp(qdev_class_get_alias(dc
), elem
) == 0) {
281 static BusState
*qbus_find_recursive(BusState
*bus
, const char *name
,
282 const char *bus_typename
)
285 BusState
*child
, *ret
;
288 if (name
&& (strcmp(bus
->name
, name
) != 0)) {
292 (strcmp(object_get_typename(OBJECT(bus
)), bus_typename
) != 0)) {
299 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
300 DeviceState
*dev
= kid
->child
;
301 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
302 ret
= qbus_find_recursive(child
, name
, bus_typename
);
311 static BusState
*qbus_find(const char *path
)
318 /* find start element */
319 if (path
[0] == '/') {
320 bus
= sysbus_get_default();
323 if (sscanf(path
, "%127[^/]%n", elem
, &len
) != 1) {
327 bus
= qbus_find_recursive(sysbus_get_default(), elem
, NULL
);
329 qerror_report(QERR_BUS_NOT_FOUND
, elem
);
336 assert(path
[pos
] == '/' || !path
[pos
]);
337 while (path
[pos
] == '/') {
340 if (path
[pos
] == '\0') {
345 if (sscanf(path
+pos
, "%127[^/]%n", elem
, &len
) != 1) {
350 dev
= qbus_find_dev(bus
, elem
);
352 qerror_report(QERR_DEVICE_NOT_FOUND
, elem
);
353 if (!monitor_cur_is_qmp()) {
359 assert(path
[pos
] == '/' || !path
[pos
]);
360 while (path
[pos
] == '/') {
363 if (path
[pos
] == '\0') {
364 /* last specified element is a device. If it has exactly
365 * one child bus accept it nevertheless */
366 switch (dev
->num_child_bus
) {
368 qerror_report(QERR_DEVICE_NO_BUS
, elem
);
371 return QLIST_FIRST(&dev
->child_bus
);
373 qerror_report(QERR_DEVICE_MULTIPLE_BUSSES
, elem
);
374 if (!monitor_cur_is_qmp()) {
382 if (sscanf(path
+pos
, "%127[^/]%n", elem
, &len
) != 1) {
387 bus
= qbus_find_bus(dev
, elem
);
389 qerror_report(QERR_BUS_NOT_FOUND
, elem
);
390 if (!monitor_cur_is_qmp()) {
398 DeviceState
*qdev_device_add(QemuOpts
*opts
)
402 const char *driver
, *path
, *id
;
406 driver
= qemu_opt_get(opts
, "driver");
408 qerror_report(QERR_MISSING_PARAMETER
, "driver");
413 obj
= object_class_by_name(driver
);
415 const char *typename
= find_typename_by_alias(driver
);
419 obj
= object_class_by_name(driver
);
424 qerror_report(QERR_INVALID_PARAMETER_VALUE
, "driver", "device type");
428 k
= DEVICE_CLASS(obj
);
431 path
= qemu_opt_get(opts
, "bus");
433 bus
= qbus_find(path
);
437 if (strcmp(object_get_typename(OBJECT(bus
)), k
->bus_type
) != 0) {
438 qerror_report(QERR_BAD_BUS_FOR_DEVICE
,
439 driver
, object_get_typename(OBJECT(bus
)));
443 bus
= qbus_find_recursive(sysbus_get_default(), NULL
, k
->bus_type
);
445 qerror_report(QERR_NO_BUS_FOR_DEVICE
,
446 k
->bus_type
, driver
);
450 if (qdev_hotplug
&& !bus
->allow_hotplug
) {
451 qerror_report(QERR_BUS_NO_HOTPLUG
, bus
->name
);
456 bus
= sysbus_get_default();
459 /* create device, set properties */
460 qdev
= DEVICE(object_new(driver
));
461 qdev_set_parent_bus(qdev
, bus
);
463 id
= qemu_opts_id(opts
);
467 if (qemu_opt_foreach(opts
, set_property
, qdev
, 1) != 0) {
472 object_property_add_child(qdev_get_peripheral(), qdev
->id
,
475 static int anon_count
;
476 gchar
*name
= g_strdup_printf("device[%d]", anon_count
++);
477 object_property_add_child(qdev_get_peripheral_anon(), name
,
481 if (qdev_init(qdev
) < 0) {
482 qerror_report(QERR_DEVICE_INIT_FAILED
, driver
);
490 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
491 static void qbus_print(Monitor
*mon
, BusState
*bus
, int indent
);
493 static void qdev_print_props(Monitor
*mon
, DeviceState
*dev
, Property
*props
,
498 for (; props
->name
; props
++) {
501 char *legacy_name
= g_strdup_printf("legacy-%s", props
->name
);
502 if (object_property_get_type(OBJECT(dev
), legacy_name
, NULL
)) {
503 value
= object_property_get_str(OBJECT(dev
), legacy_name
, &err
);
505 value
= object_property_print(OBJECT(dev
), props
->name
, &err
);
513 qdev_printf("%s = %s\n", props
->name
,
514 value
&& *value
? value
: "<null>");
519 static void bus_print_dev(BusState
*bus
, Monitor
*mon
, DeviceState
*dev
, int indent
)
521 BusClass
*bc
= BUS_GET_CLASS(bus
);
524 bc
->print_dev(mon
, dev
, indent
);
528 static void qdev_print(Monitor
*mon
, DeviceState
*dev
, int indent
)
532 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev
)),
533 dev
->id
? dev
->id
: "");
535 if (dev
->num_gpio_in
) {
536 qdev_printf("gpio-in %d\n", dev
->num_gpio_in
);
538 if (dev
->num_gpio_out
) {
539 qdev_printf("gpio-out %d\n", dev
->num_gpio_out
);
541 class = object_get_class(OBJECT(dev
));
543 qdev_print_props(mon
, dev
, DEVICE_CLASS(class)->props
, indent
);
544 class = object_class_get_parent(class);
545 } while (class != object_class_by_name(TYPE_DEVICE
));
546 bus_print_dev(dev
->parent_bus
, mon
, dev
, indent
);
547 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
548 qbus_print(mon
, child
, indent
);
552 static void qbus_print(Monitor
*mon
, BusState
*bus
, int indent
)
556 qdev_printf("bus: %s\n", bus
->name
);
558 qdev_printf("type %s\n", object_get_typename(OBJECT(bus
)));
559 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
560 DeviceState
*dev
= kid
->child
;
561 qdev_print(mon
, dev
, indent
);
566 void do_info_qtree(Monitor
*mon
)
568 if (sysbus_get_default())
569 qbus_print(mon
, sysbus_get_default(), 0);
572 void do_info_qdm(Monitor
*mon
)
574 object_class_foreach(qdev_print_devinfo
, TYPE_DEVICE
, false, NULL
);
577 int do_device_add(Monitor
*mon
, const QDict
*qdict
, QObject
**ret_data
)
579 Error
*local_err
= NULL
;
582 opts
= qemu_opts_from_qdict(qemu_find_opts("device"), qdict
, &local_err
);
583 if (error_is_set(&local_err
)) {
584 qerror_report_err(local_err
);
585 error_free(local_err
);
588 if (!monitor_cur_is_qmp() && qdev_device_help(opts
)) {
592 if (!qdev_device_add(opts
)) {
599 void qmp_device_del(const char *id
, Error
**errp
)
603 dev
= qdev_find_recursive(sysbus_get_default(), id
);
605 error_set(errp
, QERR_DEVICE_NOT_FOUND
, id
);
609 qdev_unplug(dev
, errp
);
612 void qdev_machine_init(void)
614 qdev_get_peripheral_anon();
615 qdev_get_peripheral();