trap signals for "-serial mon:stdio"
[qemu.git] / qdev-monitor.c
1 /*
2 * Dynamic device configuration and creation.
3 *
4 * Copyright (c) 2009 CodeSourcery
5 *
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.
10 *
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.
15 *
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/>.
18 */
19
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"
27
28 /*
29 * Aliases were a bad idea from the start. Let's keep them
30 * from spreading further.
31 */
32 typedef struct QDevAlias
33 {
34 const char *typename;
35 const char *alias;
36 uint32_t arch_mask;
37 } QDevAlias;
38
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 { }
52 };
53
54 static const char *qdev_class_get_alias(DeviceClass *dc)
55 {
56 const char *typename = object_class_get_name(OBJECT_CLASS(dc));
57 int i;
58
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;
63 }
64
65 if (strcmp(qdev_alias_table[i].typename, typename) == 0) {
66 return qdev_alias_table[i].alias;
67 }
68 }
69
70 return NULL;
71 }
72
73 static bool qdev_class_has_alias(DeviceClass *dc)
74 {
75 return (qdev_class_get_alias(dc) != NULL);
76 }
77
78 static void qdev_print_devinfo(ObjectClass *klass, void *opaque)
79 {
80 DeviceClass *dc;
81 bool *show_no_user = opaque;
82
83 dc = (DeviceClass *)object_class_dynamic_cast(klass, TYPE_DEVICE);
84
85 if (!dc || (show_no_user && !*show_no_user && dc->no_user)) {
86 return;
87 }
88
89 error_printf("name \"%s\"", object_class_get_name(klass));
90 if (dc->bus_type) {
91 error_printf(", bus %s", dc->bus_type);
92 }
93 if (qdev_class_has_alias(dc)) {
94 error_printf(", alias \"%s\"", qdev_class_get_alias(dc));
95 }
96 if (dc->desc) {
97 error_printf(", desc \"%s\"", dc->desc);
98 }
99 if (dc->no_user) {
100 error_printf(", no-user");
101 }
102 error_printf("\n");
103 }
104
105 static int set_property(const char *name, const char *value, void *opaque)
106 {
107 DeviceState *dev = opaque;
108 Error *err = NULL;
109
110 if (strcmp(name, "driver") == 0)
111 return 0;
112 if (strcmp(name, "bus") == 0)
113 return 0;
114
115 qdev_prop_parse(dev, name, value, &err);
116 if (err != NULL) {
117 qerror_report_err(err);
118 error_free(err);
119 return -1;
120 }
121 return 0;
122 }
123
124 static const char *find_typename_by_alias(const char *alias)
125 {
126 int i;
127
128 for (i = 0; qdev_alias_table[i].alias; i++) {
129 if (qdev_alias_table[i].arch_mask &&
130 !(qdev_alias_table[i].arch_mask & arch_type)) {
131 continue;
132 }
133
134 if (strcmp(qdev_alias_table[i].alias, alias) == 0) {
135 return qdev_alias_table[i].typename;
136 }
137 }
138
139 return NULL;
140 }
141
142 int qdev_device_help(QemuOpts *opts)
143 {
144 const char *driver;
145 Property *prop;
146 ObjectClass *klass;
147
148 driver = qemu_opt_get(opts, "driver");
149 if (driver && is_help_option(driver)) {
150 bool show_no_user = false;
151 object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, &show_no_user);
152 return 1;
153 }
154
155 if (!driver || !qemu_opt_has_help_opt(opts)) {
156 return 0;
157 }
158
159 klass = object_class_by_name(driver);
160 if (!klass) {
161 const char *typename = find_typename_by_alias(driver);
162
163 if (typename) {
164 driver = typename;
165 klass = object_class_by_name(driver);
166 }
167 }
168
169 if (!klass) {
170 return 0;
171 }
172 do {
173 for (prop = DEVICE_CLASS(klass)->props; prop && prop->name; prop++) {
174 /*
175 * TODO Properties without a parser are just for dirty hacks.
176 * qdev_prop_ptr is the only such PropertyInfo. It's marked
177 * for removal. This conditional should be removed along with
178 * it.
179 */
180 if (!prop->info->set) {
181 continue; /* no way to set it, don't show */
182 }
183 error_printf("%s.%s=%s\n", driver, prop->name,
184 prop->info->legacy_name ?: prop->info->name);
185 }
186 klass = object_class_get_parent(klass);
187 } while (klass != object_class_by_name(TYPE_DEVICE));
188 return 1;
189 }
190
191 static Object *qdev_get_peripheral(void)
192 {
193 static Object *dev;
194
195 if (dev == NULL) {
196 dev = container_get(qdev_get_machine(), "/peripheral");
197 }
198
199 return dev;
200 }
201
202 static Object *qdev_get_peripheral_anon(void)
203 {
204 static Object *dev;
205
206 if (dev == NULL) {
207 dev = container_get(qdev_get_machine(), "/peripheral-anon");
208 }
209
210 return dev;
211 }
212
213 static void qbus_list_bus(DeviceState *dev)
214 {
215 BusState *child;
216 const char *sep = " ";
217
218 error_printf("child busses at \"%s\":",
219 dev->id ? dev->id : object_get_typename(OBJECT(dev)));
220 QLIST_FOREACH(child, &dev->child_bus, sibling) {
221 error_printf("%s\"%s\"", sep, child->name);
222 sep = ", ";
223 }
224 error_printf("\n");
225 }
226
227 static void qbus_list_dev(BusState *bus)
228 {
229 BusChild *kid;
230 const char *sep = " ";
231
232 error_printf("devices at \"%s\":", bus->name);
233 QTAILQ_FOREACH(kid, &bus->children, sibling) {
234 DeviceState *dev = kid->child;
235 error_printf("%s\"%s\"", sep, object_get_typename(OBJECT(dev)));
236 if (dev->id)
237 error_printf("/\"%s\"", dev->id);
238 sep = ", ";
239 }
240 error_printf("\n");
241 }
242
243 static BusState *qbus_find_bus(DeviceState *dev, char *elem)
244 {
245 BusState *child;
246
247 QLIST_FOREACH(child, &dev->child_bus, sibling) {
248 if (strcmp(child->name, elem) == 0) {
249 return child;
250 }
251 }
252 return NULL;
253 }
254
255 static DeviceState *qbus_find_dev(BusState *bus, char *elem)
256 {
257 BusChild *kid;
258
259 /*
260 * try to match in order:
261 * (1) instance id, if present
262 * (2) driver name
263 * (3) driver alias, if present
264 */
265 QTAILQ_FOREACH(kid, &bus->children, sibling) {
266 DeviceState *dev = kid->child;
267 if (dev->id && strcmp(dev->id, elem) == 0) {
268 return dev;
269 }
270 }
271 QTAILQ_FOREACH(kid, &bus->children, sibling) {
272 DeviceState *dev = kid->child;
273 if (strcmp(object_get_typename(OBJECT(dev)), elem) == 0) {
274 return dev;
275 }
276 }
277 QTAILQ_FOREACH(kid, &bus->children, sibling) {
278 DeviceState *dev = kid->child;
279 DeviceClass *dc = DEVICE_GET_CLASS(dev);
280
281 if (qdev_class_has_alias(dc) &&
282 strcmp(qdev_class_get_alias(dc), elem) == 0) {
283 return dev;
284 }
285 }
286 return NULL;
287 }
288
289 static BusState *qbus_find_recursive(BusState *bus, const char *name,
290 const char *bus_typename)
291 {
292 BusClass *bus_class = BUS_GET_CLASS(bus);
293 BusChild *kid;
294 BusState *child, *ret;
295 int match = 1;
296
297 if (name && (strcmp(bus->name, name) != 0)) {
298 match = 0;
299 } else if (bus_typename && !object_dynamic_cast(OBJECT(bus), bus_typename)) {
300 match = 0;
301 } else if ((bus_class->max_dev != 0) && (bus_class->max_dev <= bus->max_index)) {
302 if (name != NULL) {
303 /* bus was explicitly specified: return an error. */
304 qerror_report(ERROR_CLASS_GENERIC_ERROR, "Bus '%s' is full",
305 bus->name);
306 return NULL;
307 } else {
308 /* bus was not specified: try to find another one. */
309 match = 0;
310 }
311 }
312 if (match) {
313 return bus;
314 }
315
316 QTAILQ_FOREACH(kid, &bus->children, sibling) {
317 DeviceState *dev = kid->child;
318 QLIST_FOREACH(child, &dev->child_bus, sibling) {
319 ret = qbus_find_recursive(child, name, bus_typename);
320 if (ret) {
321 return ret;
322 }
323 }
324 }
325 return NULL;
326 }
327
328 static BusState *qbus_find(const char *path)
329 {
330 DeviceState *dev;
331 BusState *bus;
332 char elem[128];
333 int pos, len;
334
335 /* find start element */
336 if (path[0] == '/') {
337 bus = sysbus_get_default();
338 pos = 0;
339 } else {
340 if (sscanf(path, "%127[^/]%n", elem, &len) != 1) {
341 assert(!path[0]);
342 elem[0] = len = 0;
343 }
344 bus = qbus_find_recursive(sysbus_get_default(), elem, NULL);
345 if (!bus) {
346 qerror_report(QERR_BUS_NOT_FOUND, elem);
347 return NULL;
348 }
349 pos = len;
350 }
351
352 for (;;) {
353 assert(path[pos] == '/' || !path[pos]);
354 while (path[pos] == '/') {
355 pos++;
356 }
357 if (path[pos] == '\0') {
358 return bus;
359 }
360
361 /* find device */
362 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
363 assert(0);
364 elem[0] = len = 0;
365 }
366 pos += len;
367 dev = qbus_find_dev(bus, elem);
368 if (!dev) {
369 qerror_report(QERR_DEVICE_NOT_FOUND, elem);
370 if (!monitor_cur_is_qmp()) {
371 qbus_list_dev(bus);
372 }
373 return NULL;
374 }
375
376 assert(path[pos] == '/' || !path[pos]);
377 while (path[pos] == '/') {
378 pos++;
379 }
380 if (path[pos] == '\0') {
381 /* last specified element is a device. If it has exactly
382 * one child bus accept it nevertheless */
383 switch (dev->num_child_bus) {
384 case 0:
385 qerror_report(QERR_DEVICE_NO_BUS, elem);
386 return NULL;
387 case 1:
388 return QLIST_FIRST(&dev->child_bus);
389 default:
390 qerror_report(QERR_DEVICE_MULTIPLE_BUSSES, elem);
391 if (!monitor_cur_is_qmp()) {
392 qbus_list_bus(dev);
393 }
394 return NULL;
395 }
396 }
397
398 /* find bus */
399 if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) {
400 assert(0);
401 elem[0] = len = 0;
402 }
403 pos += len;
404 bus = qbus_find_bus(dev, elem);
405 if (!bus) {
406 qerror_report(QERR_BUS_NOT_FOUND, elem);
407 if (!monitor_cur_is_qmp()) {
408 qbus_list_bus(dev);
409 }
410 return NULL;
411 }
412 }
413 }
414
415 DeviceState *qdev_device_add(QemuOpts *opts)
416 {
417 ObjectClass *obj;
418 DeviceClass *k;
419 const char *driver, *path, *id;
420 DeviceState *qdev;
421 BusState *bus = NULL;
422
423 driver = qemu_opt_get(opts, "driver");
424 if (!driver) {
425 qerror_report(QERR_MISSING_PARAMETER, "driver");
426 return NULL;
427 }
428
429 /* find driver */
430 obj = object_class_by_name(driver);
431 if (!obj) {
432 const char *typename = find_typename_by_alias(driver);
433
434 if (typename) {
435 driver = typename;
436 obj = object_class_by_name(driver);
437 }
438 }
439
440 if (!obj) {
441 qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "device type");
442 return NULL;
443 }
444
445 k = DEVICE_CLASS(obj);
446
447 /* find bus */
448 path = qemu_opt_get(opts, "bus");
449 if (path != NULL) {
450 bus = qbus_find(path);
451 if (!bus) {
452 return NULL;
453 }
454 if (!object_dynamic_cast(OBJECT(bus), k->bus_type)) {
455 qerror_report(QERR_BAD_BUS_FOR_DEVICE,
456 driver, object_get_typename(OBJECT(bus)));
457 return NULL;
458 }
459 } else if (k->bus_type != NULL) {
460 bus = qbus_find_recursive(sysbus_get_default(), NULL, k->bus_type);
461 if (!bus) {
462 qerror_report(QERR_NO_BUS_FOR_DEVICE,
463 k->bus_type, driver);
464 return NULL;
465 }
466 }
467 if (qdev_hotplug && bus && !bus->allow_hotplug) {
468 qerror_report(QERR_BUS_NO_HOTPLUG, bus->name);
469 return NULL;
470 }
471
472 /* create device, set properties */
473 qdev = DEVICE(object_new(driver));
474
475 if (bus) {
476 qdev_set_parent_bus(qdev, bus);
477 }
478
479 id = qemu_opts_id(opts);
480 if (id) {
481 qdev->id = id;
482 }
483 if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) {
484 qdev_free(qdev);
485 return NULL;
486 }
487 if (qdev->id) {
488 object_property_add_child(qdev_get_peripheral(), qdev->id,
489 OBJECT(qdev), NULL);
490 } else {
491 static int anon_count;
492 gchar *name = g_strdup_printf("device[%d]", anon_count++);
493 object_property_add_child(qdev_get_peripheral_anon(), name,
494 OBJECT(qdev), NULL);
495 g_free(name);
496 }
497 if (qdev_init(qdev) < 0) {
498 qerror_report(QERR_DEVICE_INIT_FAILED, driver);
499 return NULL;
500 }
501 qdev->opts = opts;
502 return qdev;
503 }
504
505
506 #define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__)
507 static void qbus_print(Monitor *mon, BusState *bus, int indent);
508
509 static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props,
510 int indent)
511 {
512 if (!props)
513 return;
514 for (; props->name; props++) {
515 Error *err = NULL;
516 char *value;
517 char *legacy_name = g_strdup_printf("legacy-%s", props->name);
518 if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
519 value = object_property_get_str(OBJECT(dev), legacy_name, &err);
520 } else {
521 value = object_property_print(OBJECT(dev), props->name, &err);
522 }
523 g_free(legacy_name);
524
525 if (err) {
526 error_free(err);
527 continue;
528 }
529 qdev_printf("%s = %s\n", props->name,
530 value && *value ? value : "<null>");
531 g_free(value);
532 }
533 }
534
535 static void bus_print_dev(BusState *bus, Monitor *mon, DeviceState *dev, int indent)
536 {
537 BusClass *bc = BUS_GET_CLASS(bus);
538
539 if (bc->print_dev) {
540 bc->print_dev(mon, dev, indent);
541 }
542 }
543
544 static void qdev_print(Monitor *mon, DeviceState *dev, int indent)
545 {
546 ObjectClass *class;
547 BusState *child;
548 qdev_printf("dev: %s, id \"%s\"\n", object_get_typename(OBJECT(dev)),
549 dev->id ? dev->id : "");
550 indent += 2;
551 if (dev->num_gpio_in) {
552 qdev_printf("gpio-in %d\n", dev->num_gpio_in);
553 }
554 if (dev->num_gpio_out) {
555 qdev_printf("gpio-out %d\n", dev->num_gpio_out);
556 }
557 class = object_get_class(OBJECT(dev));
558 do {
559 qdev_print_props(mon, dev, DEVICE_CLASS(class)->props, indent);
560 class = object_class_get_parent(class);
561 } while (class != object_class_by_name(TYPE_DEVICE));
562 bus_print_dev(dev->parent_bus, mon, dev, indent);
563 QLIST_FOREACH(child, &dev->child_bus, sibling) {
564 qbus_print(mon, child, indent);
565 }
566 }
567
568 static void qbus_print(Monitor *mon, BusState *bus, int indent)
569 {
570 BusChild *kid;
571
572 qdev_printf("bus: %s\n", bus->name);
573 indent += 2;
574 qdev_printf("type %s\n", object_get_typename(OBJECT(bus)));
575 QTAILQ_FOREACH(kid, &bus->children, sibling) {
576 DeviceState *dev = kid->child;
577 qdev_print(mon, dev, indent);
578 }
579 }
580 #undef qdev_printf
581
582 void do_info_qtree(Monitor *mon, const QDict *qdict)
583 {
584 if (sysbus_get_default())
585 qbus_print(mon, sysbus_get_default(), 0);
586 }
587
588 void do_info_qdm(Monitor *mon, const QDict *qdict)
589 {
590 object_class_foreach(qdev_print_devinfo, TYPE_DEVICE, false, NULL);
591 }
592
593 int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
594 {
595 Error *local_err = NULL;
596 QemuOpts *opts;
597 DeviceState *dev;
598
599 opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
600 if (error_is_set(&local_err)) {
601 qerror_report_err(local_err);
602 error_free(local_err);
603 return -1;
604 }
605 if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
606 qemu_opts_del(opts);
607 return 0;
608 }
609 dev = qdev_device_add(opts);
610 if (!dev) {
611 qemu_opts_del(opts);
612 return -1;
613 }
614 object_unref(OBJECT(dev));
615 return 0;
616 }
617
618 void qmp_device_del(const char *id, Error **errp)
619 {
620 DeviceState *dev;
621
622 dev = qdev_find_recursive(sysbus_get_default(), id);
623 if (NULL == dev) {
624 error_set(errp, QERR_DEVICE_NOT_FOUND, id);
625 return;
626 }
627
628 qdev_unplug(dev, errp);
629 }
630
631 void qdev_machine_init(void)
632 {
633 qdev_get_peripheral_anon();
634 qdev_get_peripheral();
635 }
636
637 QemuOptsList qemu_device_opts = {
638 .name = "device",
639 .implied_opt_name = "driver",
640 .head = QTAILQ_HEAD_INITIALIZER(qemu_device_opts.head),
641 .desc = {
642 /*
643 * no elements => accept any
644 * sanity checking will happen later
645 * when setting device properties
646 */
647 { /* end of list */ }
648 },
649 };
650
651 QemuOptsList qemu_global_opts = {
652 .name = "global",
653 .head = QTAILQ_HEAD_INITIALIZER(qemu_global_opts.head),
654 .desc = {
655 {
656 .name = "driver",
657 .type = QEMU_OPT_STRING,
658 },{
659 .name = "property",
660 .type = QEMU_OPT_STRING,
661 },{
662 .name = "value",
663 .type = QEMU_OPT_STRING,
664 },
665 { /* end of list */ }
666 },
667 };
668
669 int qemu_global_option(const char *str)
670 {
671 char driver[64], property[64];
672 QemuOpts *opts;
673 int rc, offset;
674
675 rc = sscanf(str, "%63[^.].%63[^=]%n", driver, property, &offset);
676 if (rc < 2 || str[offset] != '=') {
677 error_report("can't parse: \"%s\"", str);
678 return -1;
679 }
680
681 opts = qemu_opts_create_nofail(&qemu_global_opts);
682 qemu_opt_set(opts, "driver", driver);
683 qemu_opt_set(opts, "property", property);
684 qemu_opt_set(opts, "value", str+offset+1);
685 return 0;
686 }