virtio-mmio: Drop useless bus->allow_hotplug = 0
[qemu/ar7.git] / qdev-monitor.c
blobc72145127e673927a1735833e5507be18cfe1be8
1 /*
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/>.
20 #include "hw/qdev.h"
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
34 const char *typename;
35 const char *alias;
36 uint32_t arch_mask;
37 } 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" },
51 { }
54 static const char *qdev_class_get_alias(DeviceClass *dc)
56 const char *typename = object_class_get_name(OBJECT_CLASS(dc));
57 int i;
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)) {
62 continue;
65 if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
66 return qdev_alias_table[i].alias;
70 return NULL;
73 static bool qdev_class_has_alias(DeviceClass *dc)
75 return (qdev_class_get_alias(dc) != NULL);
78 static void qdev_print_devinfo(DeviceClass *dc)
80 error_printf("name \"%s\"", object_class_get_name(OBJECT_CLASS(dc)));
81 if (dc->bus_type) {
82 error_printf(", bus %s", dc->bus_type);
84 if (qdev_class_has_alias(dc)) {
85 error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
87 if (dc->desc) {
88 error_printf(", desc \"%s\"", dc->desc);
90 if (dc->cannot_instantiate_with_device_add_yet) {
91 error_printf(", no-user");
93 error_printf("\n");
96 static gint devinfo_cmp(gconstpointer a, gconstpointer b)
98 return strcasecmp(object_class_get_name((ObjectClass *)a),
99 object_class_get_name((ObjectClass *)b));
102 static void qdev_print_devinfos(bool show_no_user)
104 static const char *cat_name[DEVICE_CATEGORY_MAX + 1] = {
105 [DEVICE_CATEGORY_BRIDGE] = "Controller/Bridge/Hub",
106 [DEVICE_CATEGORY_USB] = "USB",
107 [DEVICE_CATEGORY_STORAGE] = "Storage",
108 [DEVICE_CATEGORY_NETWORK] = "Network",
109 [DEVICE_CATEGORY_INPUT] = "Input",
110 [DEVICE_CATEGORY_DISPLAY] = "Display",
111 [DEVICE_CATEGORY_SOUND] = "Sound",
112 [DEVICE_CATEGORY_MISC] = "Misc",
113 [DEVICE_CATEGORY_MAX] = "Uncategorized",
115 GSList *list, *elt;
116 int i;
117 bool cat_printed;
119 list = g_slist_sort(object_class_get_list(TYPE_DEVICE, false),
120 devinfo_cmp);
122 for (i = 0; i <= DEVICE_CATEGORY_MAX; i++) {
123 cat_printed = false;
124 for (elt = list; elt; elt = elt->next) {
125 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
126 TYPE_DEVICE);
127 if ((i < DEVICE_CATEGORY_MAX
128 ? !test_bit(i, dc->categories)
129 : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX))
130 || (!show_no_user
131 && dc->cannot_instantiate_with_device_add_yet)) {
132 continue;
134 if (!cat_printed) {
135 error_printf("%s%s devices:\n", i ? "\n" : "",
136 cat_name[i]);
137 cat_printed = true;
139 qdev_print_devinfo(dc);
143 g_slist_free(list);
146 static int set_property(const char *name, const char *value, void *opaque)
148 Object *obj = opaque;
149 Error *err = NULL;
151 if (strcmp(name, "driver") == 0)
152 return 0;
153 if (strcmp(name, "bus") == 0)
154 return 0;
156 object_property_parse(obj, value, name, &err);
157 if (err != NULL) {
158 qerror_report_err(err);
159 error_free(err);
160 return -1;
162 return 0;
165 static const char *find_typename_by_alias(const char *alias)
167 int i;
169 for (i = 0; qdev_alias_table[i].alias; i++) {
170 if (qdev_alias_table[i].arch_mask &&
171 !(qdev_alias_table[i].arch_mask & arch_type)) {
172 continue;
175 if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
176 return qdev_alias_table[i].typename;
180 return NULL;
183 int qdev_device_help(QemuOpts *opts)
185 Error *local_err = NULL;
186 const char *driver;
187 DevicePropertyInfoList *prop_list;
188 DevicePropertyInfoList *prop;
190 driver = qemu_opt_get(opts, "driver");
191 if (driver && is_help_option(driver)) {
192 qdev_print_devinfos(false);
193 return 1;
196 if (!driver || !qemu_opt_has_help_opt(opts)) {
197 return 0;
200 if (!object_class_by_name(driver)) {
201 const char *typename = find_typename_by_alias(driver);
203 if (typename) {
204 driver = typename;
208 prop_list = qmp_device_list_properties(driver, &local_err);
209 if (local_err) {
210 error_printf("%s\n", error_get_pretty(local_err));
211 error_free(local_err);
212 return 1;
215 for (prop = prop_list; prop; prop = prop->next) {
216 error_printf("%s.%s=%s\n", driver,
217 prop->value->name,
218 prop->value->type);
221 qapi_free_DevicePropertyInfoList(prop_list);
222 return 1;
225 static Object *qdev_get_peripheral(void)
227 static Object *dev;
229 if (dev == NULL) {
230 dev = container_get(qdev_get_machine(), "/peripheral");
233 return dev;
236 static Object *qdev_get_peripheral_anon(void)
238 static Object *dev;
240 if (dev == NULL) {
241 dev = container_get(qdev_get_machine(), "/peripheral-anon");
244 return dev;
247 static void qbus_list_bus(DeviceState *dev)
249 BusState *child;
250 const char *sep = " ";
252 error_printf("child busses at \"%s\":",
253 dev->id ? dev->id : object_get_typename(OBJECT(dev)));
254 QLIST_FOREACH(child, &dev->child_bus, sibling) {
255 error_printf("%s\"%s\"", sep, child->name);
256 sep = ", ";
258 error_printf("\n");
261 static void qbus_list_dev(BusState *bus)
263 BusChild *kid;
264 const char *sep = " ";
266 error_printf("devices at \"%s\":", bus->name);
267 QTAILQ_FOREACH(kid, &bus->children, sibling) {
268 DeviceState *dev = kid->child;
269 error_printf("%s\"%s\"", sep, object_get_typename(OBJECT(dev)));
270 if (dev->id)
271 error_printf("/\"%s\"", dev->id);
272 sep = ", ";
274 error_printf("\n");
277 static BusState *qbus_find_bus(DeviceState *dev, char *elem)
279 BusState *child;
281 QLIST_FOREACH(child, &dev->child_bus, sibling) {
282 if (strcmp(child->name, elem) == 0) {
283 return child;
286 return NULL;
289 static DeviceState *qbus_find_dev(BusState *bus, char *elem)
291 BusChild *kid;
294 * try to match in order:
295 * (1) instance id, if present
296 * (2) driver name
297 * (3) driver alias, if present
299 QTAILQ_FOREACH(kid, &bus->children, sibling) {
300 DeviceState *dev = kid->child;
301 if (dev->id && strcmp(dev->id, elem) == 0) {
302 return dev;
305 QTAILQ_FOREACH(kid, &bus->children, sibling) {
306 DeviceState *dev = kid->child;
307 if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
308 return dev;
311 QTAILQ_FOREACH(kid, &bus->children, sibling) {
312 DeviceState *dev = kid->child;
313 DeviceClass *dc = DEVICE_GET_CLASS(dev);
315 if (qdev_class_has_alias(dc) &&
316 strcmp(qdev_class_get_alias(dc), elem) == 0) {
317 return dev;
320 return NULL;
323 static BusState *qbus_find_recursive(BusState *bus, const char *name,
324 const char *bus_typename)
326 BusClass *bus_class = BUS_GET_CLASS(bus);
327 BusChild *kid;
328 BusState *child, *ret;
329 int match = 1;
331 if (name && (strcmp(bus->name, name) != 0)) {
332 match = 0;
333 } else if (bus_typename && !object_dynamic_cast(OBJECT(bus), bus_typename)) {
334 match = 0;
335 } else if ((bus_class->max_dev != 0) && (bus_class->max_dev <= bus->max_index)) {
336 if (name != NULL) {
337 /* bus was explicitly specified: return an error. */
338 qerror_report(ERROR_CLASS_GENERIC_ERROR, "Bus '%s' is full",
339 bus->name);
340 return NULL;
341 } else {
342 /* bus was not specified: try to find another one. */
343 match = 0;
346 if (match) {
347 return bus;
350 QTAILQ_FOREACH(kid, &bus->children, sibling) {
351 DeviceState *dev = kid->child;
352 QLIST_FOREACH(child, &dev->child_bus, sibling) {
353 ret = qbus_find_recursive(child, name, bus_typename);
354 if (ret) {
355 return ret;
359 return NULL;
362 static BusState *qbus_find(const char *path)
364 DeviceState *dev;
365 BusState *bus;
366 char elem[128];
367 int pos, len;
369 /* find start element */
370 if (path[0] == '/') {
371 bus = sysbus_get_default();
372 pos = 0;
373 } else {
374 if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
375 assert(!path[0]);
376 elem[0] = len = 0;
378 bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
379 if (!bus) {
380 qerror_report(QERR_BUS_NOT_FOUND, elem);
381 return NULL;
383 pos = len;
386 for (;;) {
387 assert(path[pos] == '/' || !path[pos]);
388 while (path[pos] == '/') {
389 pos++;
391 if (path[pos] == '\0') {
392 return bus;
395 /* find device */
396 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
397 g_assert_not_reached();
398 elem[0] = len = 0;
400 pos += len;
401 dev = qbus_find_dev(bus, elem);
402 if (!dev) {
403 qerror_report(QERR_DEVICE_NOT_FOUND, elem);
404 if (!monitor_cur_is_qmp()) {
405 qbus_list_dev(bus);
407 return NULL;
410 assert(path[pos] == '/' || !path[pos]);
411 while (path[pos] == '/') {
412 pos++;
414 if (path[pos] == '\0') {
415 /* last specified element is a device. If it has exactly
416 * one child bus accept it nevertheless */
417 switch (dev->num_child_bus) {
418 case 0:
419 qerror_report(ERROR_CLASS_GENERIC_ERROR,
420 "Device '%s' has no child bus", elem);
421 return NULL;
422 case 1:
423 return QLIST_FIRST(&dev->child_bus);
424 default:
425 qerror_report(ERROR_CLASS_GENERIC_ERROR,
426 "Device '%s' has multiple child busses", elem);
427 if (!monitor_cur_is_qmp()) {
428 qbus_list_bus(dev);
430 return NULL;
434 /* find bus */
435 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
436 g_assert_not_reached();
437 elem[0] = len = 0;
439 pos += len;
440 bus = qbus_find_bus(dev, elem);
441 if (!bus) {
442 qerror_report(QERR_BUS_NOT_FOUND, elem);
443 if (!monitor_cur_is_qmp()) {
444 qbus_list_bus(dev);
446 return NULL;
451 DeviceState *qdev_device_add(QemuOpts *opts)
453 ObjectClass *oc;
454 DeviceClass *dc;
455 const char *driver, *path, *id;
456 DeviceState *dev;
457 BusState *bus = NULL;
458 Error *err = NULL;
460 driver = qemu_opt_get(opts, "driver");
461 if (!driver) {
462 qerror_report(QERR_MISSING_PARAMETER, "driver");
463 return NULL;
466 /* find driver */
467 oc = object_class_by_name(driver);
468 if (!oc) {
469 const char *typename = find_typename_by_alias(driver);
471 if (typename) {
472 driver = typename;
473 oc = object_class_by_name(driver);
477 if (!object_class_dynamic_cast(oc, TYPE_DEVICE)) {
478 qerror_report(ERROR_CLASS_GENERIC_ERROR,
479 "'%s' is not a valid device model name", driver);
480 return NULL;
483 if (object_class_is_abstract(oc)) {
484 qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver",
485 "non-abstract device type");
486 return NULL;
489 dc = DEVICE_CLASS(oc);
490 if (dc->cannot_instantiate_with_device_add_yet ||
491 (qdev_hotplug && !dc->hotpluggable)) {
492 qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver",
493 "pluggable device type");
494 return NULL;
497 /* find bus */
498 path = qemu_opt_get(opts, "bus");
499 if (path != NULL) {
500 bus = qbus_find(path);
501 if (!bus) {
502 return NULL;
504 if (!object_dynamic_cast(OBJECT(bus), dc->bus_type)) {
505 qerror_report(ERROR_CLASS_GENERIC_ERROR,
506 "Device '%s' can't go on a %s bus",
507 driver, object_get_typename(OBJECT(bus)));
508 return NULL;
510 } else if (dc->bus_type != NULL) {
511 bus = qbus_find_recursive(sysbus_get_default(), NULL, dc->bus_type);
512 if (!bus) {
513 qerror_report(ERROR_CLASS_GENERIC_ERROR,
514 "No '%s' bus found for device '%s'",
515 dc->bus_type, driver);
516 return NULL;
519 if (qdev_hotplug && bus && !qbus_is_hotpluggable(bus)) {
520 qerror_report(QERR_BUS_NO_HOTPLUG, bus->name);
521 return NULL;
524 /* create device */
525 dev = DEVICE(object_new(driver));
527 if (bus) {
528 qdev_set_parent_bus(dev, bus);
531 id = qemu_opts_id(opts);
532 if (id) {
533 dev->id = id;
536 if (dev->id) {
537 object_property_add_child(qdev_get_peripheral(), dev->id,
538 OBJECT(dev), NULL);
539 } else {
540 static int anon_count;
541 gchar *name = g_strdup_printf("device[%d]", anon_count++);
542 object_property_add_child(qdev_get_peripheral_anon(), name,
543 OBJECT(dev), NULL);
544 g_free(name);
547 /* set properties */
548 if (qemu_opt_foreach(opts, set_property, dev, 1) != 0) {
549 object_unparent(OBJECT(dev));
550 object_unref(OBJECT(dev));
551 return NULL;
554 dev->opts = opts;
555 object_property_set_bool(OBJECT(dev), true, "realized", &err);
556 if (err != NULL) {
557 qerror_report_err(err);
558 error_free(err);
559 dev->opts = NULL;
560 object_unparent(OBJECT(dev));
561 object_unref(OBJECT(dev));
562 qerror_report(QERR_DEVICE_INIT_FAILED, driver);
563 return NULL;
565 return dev;
569 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
570 static void qbus_print(Monitor *mon, BusState *bus, int indent);
572 static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
573 int indent)
575 if (!props)
576 return;
577 for (; props->name; props++) {
578 Error *err = NULL;
579 char *value;
580 char *legacy_name = g_strdup_printf("legacy-%s", props->name);
581 if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
582 value = object_property_get_str(OBJECT(dev), legacy_name, &err);
583 } else {
584 value = object_property_print(OBJECT(dev), props->name, true, &err);
586 g_free(legacy_name);
588 if (err) {
589 error_free(err);
590 continue;
592 qdev_printf("%s = %s\n", props->name,
593 value && *value ? value : "<null>");
594 g_free(value);
598 static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
600 BusClass *bc = BUS_GET_CLASS(bus);
602 if (bc->print_dev) {
603 bc->print_dev(mon, dev, indent);
607 static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
609 ObjectClass *class;
610 BusState *child;
611 NamedGPIOList *ngl;
613 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
614 dev->id ? dev->id : "");
615 indent += 2;
616 QLIST_FOREACH(ngl, &dev->gpios, node) {
617 if (ngl->num_in) {
618 qdev_printf("gpio-in \"%s\" %d\n", ngl->name ? ngl->name : "",
619 ngl->num_in);
621 if (ngl->num_out) {
622 qdev_printf("gpio-out \"%s\" %d\n", ngl->name ? ngl->name : "",
623 ngl->num_out);
626 class = object_get_class(OBJECT(dev));
627 do {
628 qdev_print_props(mon, dev, DEVICE_CLASS(class)->props, indent);
629 class = object_class_get_parent(class);
630 } while (class != object_class_by_name(TYPE_DEVICE));
631 bus_print_dev(dev->parent_bus, mon, dev, indent);
632 QLIST_FOREACH(child, &dev->child_bus, sibling) {
633 qbus_print(mon, child, indent);
637 static void qbus_print(Monitor *mon, BusState *bus, int indent)
639 BusChild *kid;
641 qdev_printf("bus: %s\n", bus->name);
642 indent += 2;
643 qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
644 QTAILQ_FOREACH(kid, &bus->children, sibling) {
645 DeviceState *dev = kid->child;
646 qdev_print(mon, dev, indent);
649 #undef qdev_printf
651 void do_info_qtree(Monitor *mon, const QDict *qdict)
653 if (sysbus_get_default())
654 qbus_print(mon, sysbus_get_default(), 0);
657 void do_info_qdm(Monitor *mon, const QDict *qdict)
659 qdev_print_devinfos(true);
662 int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
664 Error *local_err = NULL;
665 QemuOpts *opts;
666 DeviceState *dev;
668 opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
669 if (local_err) {
670 qerror_report_err(local_err);
671 error_free(local_err);
672 return -1;
674 if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
675 qemu_opts_del(opts);
676 return 0;
678 dev = qdev_device_add(opts);
679 if (!dev) {
680 qemu_opts_del(opts);
681 return -1;
683 object_unref(OBJECT(dev));
684 return 0;
687 void qmp_device_del(const char *id, Error **errp)
689 DeviceState *dev;
691 dev = qdev_find_recursive(sysbus_get_default(), id);
692 if (!dev) {
693 error_set(errp, QERR_DEVICE_NOT_FOUND, id);
694 return;
697 qdev_unplug(dev, errp);
700 void qdev_machine_init(void)
702 qdev_get_peripheral_anon();
703 qdev_get_peripheral();
706 QemuOptsList qemu_device_opts = {
707 .name = "device",
708 .implied_opt_name = "driver",
709 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
710 .desc = {
712 * no elements => accept any
713 * sanity checking will happen later
714 * when setting device properties
716 { /* end of list */ }
720 QemuOptsList qemu_global_opts = {
721 .name = "global",
722 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
723 .desc = {
725 .name = "driver",
726 .type = QEMU_OPT_STRING,
728 .name = "property",
729 .type = QEMU_OPT_STRING,
731 .name = "value",
732 .type = QEMU_OPT_STRING,
734 { /* end of list */ }
738 int qemu_global_option(const char *str)
740 char driver[64], property[64];
741 QemuOpts *opts;
742 int rc, offset;
744 rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
745 if (rc < 2 || str[offset] != '=') {
746 error_report("can't parse: \"%s\"", str);
747 return -1;
750 opts = qemu_opts_create(&qemu_global_opts, NULL, 0, &error_abort);
751 qemu_opt_set(opts, "driver", driver);
752 qemu_opt_set(opts, "property", property);
753 qemu_opt_set(opts, "value", str+offset+1);
754 return 0;