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/>.
21 #include "hw/sysbus.h"
22 #include "monitor/monitor.h"
23 #include "monitor/qdev.h"
24 #include "qmp-commands.h"
25 #include "sysemu/arch_init.h"
26 #include "qemu/config-file.h"
29 * Aliases were a bad idea from the start. Let's keep them
30 * from spreading further.
32 typedef struct QDevAlias
39 static const QDevAlias qdev_alias_table
[] = {
40 { "virtio-blk-pci", "virtio-blk", QEMU_ARCH_ALL
& ~QEMU_ARCH_S390X
},
41 { "virtio-net-pci", "virtio-net", QEMU_ARCH_ALL
& ~QEMU_ARCH_S390X
},
42 { "virtio-serial-pci", "virtio-serial", QEMU_ARCH_ALL
& ~QEMU_ARCH_S390X
},
43 { "virtio-balloon-pci", "virtio-balloon",
44 QEMU_ARCH_ALL
& ~QEMU_ARCH_S390X
},
45 { "virtio-blk-s390", "virtio-blk", QEMU_ARCH_S390X
},
46 { "virtio-net-s390", "virtio-net", QEMU_ARCH_S390X
},
47 { "virtio-serial-s390", "virtio-serial", QEMU_ARCH_S390X
},
48 { "lsi53c895a", "lsi" },
49 { "ich9-ahci", "ahci" },
50 { "kvm-pci-assign", "pci-assign" },
54 static const char *qdev_class_get_alias(DeviceClass
*dc
)
56 const char *typename
= object_class_get_name(OBJECT_CLASS(dc
));
59 for (i
= 0; qdev_alias_table
[i
].typename
; i
++) {
60 if (qdev_alias_table
[i
].arch_mask
&&
61 !(qdev_alias_table
[i
].arch_mask
& arch_type
)) {
65 if (strcmp(qdev_alias_table
[i
].typename
, typename
) == 0) {
66 return qdev_alias_table
[i
].alias
;
73 static bool qdev_class_has_alias(DeviceClass
*dc
)
75 return (qdev_class_get_alias(dc
) != NULL
);
78 static void qdev_print_devinfo(ObjectClass
*klass
, void *opaque
)
81 bool *show_no_user
= opaque
;
83 dc
= (DeviceClass
*)object_class_dynamic_cast(klass
, TYPE_DEVICE
);
85 if (!dc
|| (show_no_user
&& !*show_no_user
&& dc
->no_user
)) {
89 error_printf("name \"%s\"", object_class_get_name(klass
));
91 error_printf(", bus %s", dc
->bus_type
);
93 if (qdev_class_has_alias(dc
)) {
94 error_printf(", alias \"%s\"", qdev_class_get_alias(dc
));
97 error_printf(", desc \"%s\"", dc
->desc
);
100 error_printf(", no-user");
105 static int set_property(const char *name
, const char *value
, void *opaque
)
107 DeviceState
*dev
= opaque
;
109 if (strcmp(name
, "driver") == 0)
111 if (strcmp(name
, "bus") == 0)
114 if (qdev_prop_parse(dev
, name
, value
) == -1) {
120 static const char *find_typename_by_alias(const char *alias
)
124 for (i
= 0; qdev_alias_table
[i
].alias
; i
++) {
125 if (qdev_alias_table
[i
].arch_mask
&&
126 !(qdev_alias_table
[i
].arch_mask
& arch_type
)) {
130 if (strcmp(qdev_alias_table
[i
].alias
, alias
) == 0) {
131 return qdev_alias_table
[i
].typename
;
138 int qdev_device_help(QemuOpts
*opts
)
144 driver
= qemu_opt_get(opts
, "driver");
145 if (driver
&& is_help_option(driver
)) {
146 bool show_no_user
= false;
147 object_class_foreach(qdev_print_devinfo
, TYPE_DEVICE
, false, &show_no_user
);
151 if (!driver
|| !qemu_opt_has_help_opt(opts
)) {
155 klass
= object_class_by_name(driver
);
157 const char *typename
= find_typename_by_alias(driver
);
161 klass
= object_class_by_name(driver
);
169 for (prop
= DEVICE_CLASS(klass
)->props
; prop
&& prop
->name
; prop
++) {
171 * TODO Properties without a parser are just for dirty hacks.
172 * qdev_prop_ptr is the only such PropertyInfo. It's marked
173 * for removal. This conditional should be removed along with
176 if (!prop
->info
->set
) {
177 continue; /* no way to set it, don't show */
179 error_printf("%s.%s=%s\n", driver
, prop
->name
,
180 prop
->info
->legacy_name
?: prop
->info
->name
);
182 klass
= object_class_get_parent(klass
);
183 } while (klass
!= object_class_by_name(TYPE_DEVICE
));
187 static Object
*qdev_get_peripheral(void)
192 dev
= container_get(qdev_get_machine(), "/peripheral");
198 static Object
*qdev_get_peripheral_anon(void)
203 dev
= container_get(qdev_get_machine(), "/peripheral-anon");
209 static void qbus_list_bus(DeviceState
*dev
)
212 const char *sep
= " ";
214 error_printf("child busses at \"%s\":",
215 dev
->id
? dev
->id
: object_get_typename(OBJECT(dev
)));
216 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
217 error_printf("%s\"%s\"", sep
, child
->name
);
223 static void qbus_list_dev(BusState
*bus
)
226 const char *sep
= " ";
228 error_printf("devices at \"%s\":", bus
->name
);
229 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
230 DeviceState
*dev
= kid
->child
;
231 error_printf("%s\"%s\"", sep
, object_get_typename(OBJECT(dev
)));
233 error_printf("/\"%s\"", dev
->id
);
239 static BusState
*qbus_find_bus(DeviceState
*dev
, char *elem
)
243 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
244 if (strcmp(child
->name
, elem
) == 0) {
251 static DeviceState
*qbus_find_dev(BusState
*bus
, char *elem
)
256 * try to match in order:
257 * (1) instance id, if present
259 * (3) driver alias, if present
261 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
262 DeviceState
*dev
= kid
->child
;
263 if (dev
->id
&& strcmp(dev
->id
, elem
) == 0) {
267 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
268 DeviceState
*dev
= kid
->child
;
269 if (strcmp(object_get_typename(OBJECT(dev
)), elem
) == 0) {
273 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
274 DeviceState
*dev
= kid
->child
;
275 DeviceClass
*dc
= DEVICE_GET_CLASS(dev
);
277 if (qdev_class_has_alias(dc
) &&
278 strcmp(qdev_class_get_alias(dc
), elem
) == 0) {
285 static BusState
*qbus_find_recursive(BusState
*bus
, const char *name
,
286 const char *bus_typename
)
288 BusClass
*bus_class
= BUS_GET_CLASS(bus
);
290 BusState
*child
, *ret
;
293 if (name
&& (strcmp(bus
->name
, name
) != 0)) {
296 if (bus_typename
&& !object_dynamic_cast(OBJECT(bus
), bus_typename
)) {
299 if ((bus_class
->max_dev
!= 0) && (bus_class
->max_dev
<= bus
->max_index
)) {
301 /* bus was explicitly specified: return an error. */
302 qerror_report(ERROR_CLASS_GENERIC_ERROR
, "Bus '%s' is full",
306 /* bus was not specified: try to find another one. */
314 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
315 DeviceState
*dev
= kid
->child
;
316 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
317 ret
= qbus_find_recursive(child
, name
, bus_typename
);
326 static BusState
*qbus_find(const char *path
)
333 /* find start element */
334 if (path
[0] == '/') {
335 bus
= sysbus_get_default();
338 if (sscanf(path
, "%127[^/]%n", elem
, &len
) != 1) {
342 bus
= qbus_find_recursive(sysbus_get_default(), elem
, NULL
);
344 qerror_report(QERR_BUS_NOT_FOUND
, elem
);
351 assert(path
[pos
] == '/' || !path
[pos
]);
352 while (path
[pos
] == '/') {
355 if (path
[pos
] == '\0') {
360 if (sscanf(path
+pos
, "%127[^/]%n", elem
, &len
) != 1) {
365 dev
= qbus_find_dev(bus
, elem
);
367 qerror_report(QERR_DEVICE_NOT_FOUND
, elem
);
368 if (!monitor_cur_is_qmp()) {
374 assert(path
[pos
] == '/' || !path
[pos
]);
375 while (path
[pos
] == '/') {
378 if (path
[pos
] == '\0') {
379 /* last specified element is a device. If it has exactly
380 * one child bus accept it nevertheless */
381 switch (dev
->num_child_bus
) {
383 qerror_report(QERR_DEVICE_NO_BUS
, elem
);
386 return QLIST_FIRST(&dev
->child_bus
);
388 qerror_report(QERR_DEVICE_MULTIPLE_BUSSES
, elem
);
389 if (!monitor_cur_is_qmp()) {
397 if (sscanf(path
+pos
, "%127[^/]%n", elem
, &len
) != 1) {
402 bus
= qbus_find_bus(dev
, elem
);
404 qerror_report(QERR_BUS_NOT_FOUND
, elem
);
405 if (!monitor_cur_is_qmp()) {
413 DeviceState
*qdev_device_add(QemuOpts
*opts
)
417 const char *driver
, *path
, *id
;
419 BusState
*bus
= NULL
;
421 driver
= qemu_opt_get(opts
, "driver");
423 qerror_report(QERR_MISSING_PARAMETER
, "driver");
428 obj
= object_class_by_name(driver
);
430 const char *typename
= find_typename_by_alias(driver
);
434 obj
= object_class_by_name(driver
);
439 qerror_report(QERR_INVALID_PARAMETER_VALUE
, "driver", "device type");
443 k
= DEVICE_CLASS(obj
);
446 path
= qemu_opt_get(opts
, "bus");
448 bus
= qbus_find(path
);
452 if (!object_dynamic_cast(OBJECT(bus
), k
->bus_type
)) {
453 qerror_report(QERR_BAD_BUS_FOR_DEVICE
,
454 driver
, object_get_typename(OBJECT(bus
)));
457 } else if (k
->bus_type
!= NULL
) {
458 bus
= qbus_find_recursive(sysbus_get_default(), NULL
, k
->bus_type
);
460 qerror_report(QERR_NO_BUS_FOR_DEVICE
,
461 k
->bus_type
, driver
);
465 if (qdev_hotplug
&& bus
&& !bus
->allow_hotplug
) {
466 qerror_report(QERR_BUS_NO_HOTPLUG
, bus
->name
);
470 /* create device, set properties */
471 qdev
= DEVICE(object_new(driver
));
474 qdev_set_parent_bus(qdev
, bus
);
477 id
= qemu_opts_id(opts
);
481 if (qemu_opt_foreach(opts
, set_property
, qdev
, 1) != 0) {
486 object_property_add_child(qdev_get_peripheral(), qdev
->id
,
489 static int anon_count
;
490 gchar
*name
= g_strdup_printf("device[%d]", anon_count
++);
491 object_property_add_child(qdev_get_peripheral_anon(), name
,
495 if (qdev_init(qdev
) < 0) {
496 qerror_report(QERR_DEVICE_INIT_FAILED
, driver
);
504 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
505 static void qbus_print(Monitor
*mon
, BusState
*bus
, int indent
);
507 static void qdev_print_props(Monitor
*mon
, DeviceState
*dev
, Property
*props
,
512 for (; props
->name
; props
++) {
515 char *legacy_name
= g_strdup_printf("legacy-%s", props
->name
);
516 if (object_property_get_type(OBJECT(dev
), legacy_name
, NULL
)) {
517 value
= object_property_get_str(OBJECT(dev
), legacy_name
, &err
);
519 value
= object_property_print(OBJECT(dev
), props
->name
, &err
);
527 qdev_printf("%s = %s\n", props
->name
,
528 value
&& *value
? value
: "<null>");
533 static void bus_print_dev(BusState
*bus
, Monitor
*mon
, DeviceState
*dev
, int indent
)
535 BusClass
*bc
= BUS_GET_CLASS(bus
);
538 bc
->print_dev(mon
, dev
, indent
);
542 static void qdev_print(Monitor
*mon
, DeviceState
*dev
, int indent
)
546 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev
)),
547 dev
->id
? dev
->id
: "");
549 if (dev
->num_gpio_in
) {
550 qdev_printf("gpio-in %d\n", dev
->num_gpio_in
);
552 if (dev
->num_gpio_out
) {
553 qdev_printf("gpio-out %d\n", dev
->num_gpio_out
);
555 class = object_get_class(OBJECT(dev
));
557 qdev_print_props(mon
, dev
, DEVICE_CLASS(class)->props
, indent
);
558 class = object_class_get_parent(class);
559 } while (class != object_class_by_name(TYPE_DEVICE
));
560 bus_print_dev(dev
->parent_bus
, mon
, dev
, indent
);
561 QLIST_FOREACH(child
, &dev
->child_bus
, sibling
) {
562 qbus_print(mon
, child
, indent
);
566 static void qbus_print(Monitor
*mon
, BusState
*bus
, int indent
)
570 qdev_printf("bus: %s\n", bus
->name
);
572 qdev_printf("type %s\n", object_get_typename(OBJECT(bus
)));
573 QTAILQ_FOREACH(kid
, &bus
->children
, sibling
) {
574 DeviceState
*dev
= kid
->child
;
575 qdev_print(mon
, dev
, indent
);
580 void do_info_qtree(Monitor
*mon
, const QDict
*qdict
)
582 if (sysbus_get_default())
583 qbus_print(mon
, sysbus_get_default(), 0);
586 void do_info_qdm(Monitor
*mon
, const QDict
*qdict
)
588 object_class_foreach(qdev_print_devinfo
, TYPE_DEVICE
, false, NULL
);
591 int do_device_add(Monitor
*mon
, const QDict
*qdict
, QObject
**ret_data
)
593 Error
*local_err
= NULL
;
597 opts
= qemu_opts_from_qdict(qemu_find_opts("device"), qdict
, &local_err
);
598 if (error_is_set(&local_err
)) {
599 qerror_report_err(local_err
);
600 error_free(local_err
);
603 if (!monitor_cur_is_qmp() && qdev_device_help(opts
)) {
607 dev
= qdev_device_add(opts
);
612 object_unref(OBJECT(dev
));
616 void qmp_device_del(const char *id
, Error
**errp
)
620 dev
= qdev_find_recursive(sysbus_get_default(), id
);
622 error_set(errp
, QERR_DEVICE_NOT_FOUND
, id
);
626 qdev_unplug(dev
, errp
);
629 void qdev_machine_init(void)
631 qdev_get_peripheral_anon();
632 qdev_get_peripheral();
635 QemuOptsList qemu_device_opts
= {
637 .implied_opt_name
= "driver",
638 .head
= QTAILQ_HEAD_INITIALIZER(qemu_device_opts
.head
),
641 * no elements => accept any
642 * sanity checking will happen later
643 * when setting device properties
645 { /* end of list */ }
649 QemuOptsList qemu_global_opts
= {
651 .head
= QTAILQ_HEAD_INITIALIZER(qemu_global_opts
.head
),
655 .type
= QEMU_OPT_STRING
,
658 .type
= QEMU_OPT_STRING
,
661 .type
= QEMU_OPT_STRING
,
663 { /* end of list */ }
667 int qemu_global_option(const char *str
)
669 char driver
[64], property
[64];
673 rc
= sscanf(str
, "%63[^.].%63[^=]%n", driver
, property
, &offset
);
674 if (rc
< 2 || str
[offset
] != '=') {
675 error_report("can't parse: \"%s\"", str
);
679 opts
= qemu_opts_create_nofail(&qemu_global_opts
);
680 qemu_opt_set(opts
, "driver", driver
);
681 qemu_opt_set(opts
, "property", property
);
682 qemu_opt_set(opts
, "value", str
+offset
+1);