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
if (info->bus_info) {
167
for (prop = info->bus_info->props; prop && prop->name; prop++) {
168
if (!prop->info->parse) {
169
continue; /* no way to set it, don't show */
171
error_printf("%s.%s=%s\n", driver, prop->name,
172
prop->info->legacy_name ?: prop->info->name);
178
static Object *qdev_get_peripheral(void)
183
dev = object_new("container");
184
object_property_add_child(object_get_root(), "peripheral",
191
static Object *qdev_get_peripheral_anon(void)
196
dev = object_new("container");
197
object_property_add_child(object_get_root(), "peripheral-anon",
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);
461
if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) {
465
if (qdev_init(qdev) < 0) {
466
qerror_report(QERR_DEVICE_INIT_FAILED, driver);
470
object_property_add_child(qdev_get_peripheral(), qdev->id,
473
static int anon_count;
474
gchar *name = g_strdup_printf("device[%d]", anon_count++);
475
object_property_add_child(qdev_get_peripheral_anon(), name,
484
#define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
485
static void qbus_print(Monitor *mon, BusState *bus, int indent);
487
static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
488
const char *prefix, int indent)
492
for (; props->name; props++) {
495
char *legacy_name = g_strdup_printf("legacy-%s", props->name);
496
if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
497
value = object_property_get_str(OBJECT(dev), legacy_name, &err);
499
value = object_property_get_str(OBJECT(dev), props->name, &err);
507
qdev_printf("%s-prop: %s = %s\n", prefix, props->name,
508
value && *value ? value : "<null>");
513
static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
516
qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
517
dev->id ? dev->id : "");
519
if (dev->num_gpio_in) {
520
qdev_printf("gpio-in %d\n", dev->num_gpio_in);
522
if (dev->num_gpio_out) {
523
qdev_printf("gpio-out %d\n", dev->num_gpio_out);
525
qdev_print_props(mon, dev, qdev_get_props(dev), "dev", indent);
526
qdev_print_props(mon, dev, dev->parent_bus->info->props, "bus", indent);
527
if (dev->parent_bus->info->print_dev)
528
dev->parent_bus->info->print_dev(mon, dev, indent);
529
QLIST_FOREACH(child, &dev->child_bus, sibling) {
530
qbus_print(mon, child, indent);
534
static void qbus_print(Monitor *mon, BusState *bus, int indent)
536
struct DeviceState *dev;
538
qdev_printf("bus: %s\n", bus->name);
540
qdev_printf("type %s\n", bus->info->name);
541
QTAILQ_FOREACH(dev, &bus->children, sibling) {
542
qdev_print(mon, dev, indent);
547
void do_info_qtree(Monitor *mon)
549
if (sysbus_get_default())
550
qbus_print(mon, sysbus_get_default(), 0);
553
void do_info_qdm(Monitor *mon)
555
object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, NULL);
558
int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
562
opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict);
566
if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
570
if (!qdev_device_add(opts)) {
577
int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
579
const char *id = qdict_get_str(qdict, "id");
582
dev = qdev_find_recursive(sysbus_get_default(), id);
584
qerror_report(QERR_DEVICE_NOT_FOUND, id);
587
return qdev_unplug(dev);
590
void qdev_machine_init(void)
592
qdev_get_peripheral_anon();
593
qdev_get_peripheral();