qdev: refactor away qdev_create_from_info
[qemu.git] / hw / qdev.h
1 #ifndef QDEV_H
2 #define QDEV_H
3
4 #include "hw.h"
5 #include "qemu-queue.h"
6 #include "qemu-char.h"
7 #include "qemu-option.h"
8 #include "qapi/qapi-visit-core.h"
9 #include "qemu/object.h"
10
11 typedef struct Property Property;
12
13 typedef struct PropertyInfo PropertyInfo;
14
15 typedef struct CompatProperty CompatProperty;
16
17 typedef struct BusState BusState;
18
19 typedef struct BusInfo BusInfo;
20
21 enum DevState {
22 DEV_STATE_CREATED = 1,
23 DEV_STATE_INITIALIZED,
24 };
25
26 enum {
27 DEV_NVECTORS_UNSPECIFIED = -1,
28 };
29
30 /**
31 * @DevicePropertyAccessor - called when trying to get/set a property
32 *
33 * @dev the device that owns the property
34 * @v the visitor that contains the property data
35 * @opaque the device property opaque
36 * @name the name of the property
37 * @errp a pointer to an Error that is filled if getting/setting fails.
38 */
39 typedef void (DevicePropertyAccessor)(DeviceState *dev,
40 Visitor *v,
41 void *opaque,
42 const char *name,
43 Error **errp);
44
45 /**
46 * @DevicePropertyRelease - called when a property is removed from a device
47 *
48 * @dev the device that owns the property
49 * @name the name of the property
50 * @opaque the opaque registered with the property
51 */
52 typedef void (DevicePropertyRelease)(DeviceState *dev,
53 const char *name,
54 void *opaque);
55
56 typedef struct DeviceProperty
57 {
58 gchar *name;
59 gchar *type;
60 DevicePropertyAccessor *get;
61 DevicePropertyAccessor *set;
62 DevicePropertyRelease *release;
63 void *opaque;
64
65 QTAILQ_ENTRY(DeviceProperty) node;
66 } DeviceProperty;
67
68 #define TYPE_DEVICE "device"
69 #define DEVICE(obj) OBJECT_CHECK(DeviceState, (obj), TYPE_DEVICE)
70 #define DEVICE_CLASS(klass) OBJECT_CLASS_CHECK(DeviceClass, (klass), TYPE_DEVICE)
71 #define DEVICE_GET_CLASS(obj) OBJECT_GET_CLASS(DeviceClass, (obj), TYPE_DEVICE)
72
73 typedef int (*qdev_initfn)(DeviceState *dev);
74 typedef int (*qdev_event)(DeviceState *dev);
75 typedef void (*qdev_resetfn)(DeviceState *dev);
76
77 typedef struct DeviceClass {
78 ObjectClass parent_class;
79
80 const char *fw_name;
81 const char *desc;
82 Property *props;
83 int no_user;
84
85 /* callbacks */
86 void (*reset)(DeviceState *dev);
87
88 /* device state */
89 const VMStateDescription *vmsd;
90
91 /* Private to qdev / bus. */
92 qdev_initfn init;
93 qdev_event unplug;
94 qdev_event exit;
95 BusInfo *bus_info;
96 } DeviceClass;
97
98 /* This structure should not be accessed directly. We declare it here
99 so that it can be embedded in individual device state structures. */
100 struct DeviceState {
101 Object parent_obj;
102
103 const char *id;
104 enum DevState state;
105 QemuOpts *opts;
106 int hotplugged;
107 BusState *parent_bus;
108 int num_gpio_out;
109 qemu_irq *gpio_out;
110 int num_gpio_in;
111 qemu_irq *gpio_in;
112 QLIST_HEAD(, BusState) child_bus;
113 int num_child_bus;
114 QTAILQ_ENTRY(DeviceState) sibling;
115 int instance_id_alias;
116 int alias_required_for_version;
117
118 /**
119 * This tracks the number of references between devices. See @qdev_ref for
120 * more information.
121 */
122 uint32_t ref;
123
124 QTAILQ_HEAD(, DeviceProperty) properties;
125
126 /* Do not, under any circumstance, use this parent link below anywhere
127 * outside of qdev.c. You have been warned. */
128 DeviceState *parent;
129 };
130
131 typedef void (*bus_dev_printfn)(Monitor *mon, DeviceState *dev, int indent);
132 typedef char *(*bus_get_dev_path)(DeviceState *dev);
133 /*
134 * This callback is used to create Open Firmware device path in accordance with
135 * OF spec http://forthworks.com/standards/of1275.pdf. Indicidual bus bindings
136 * can be found here http://playground.sun.com/1275/bindings/.
137 */
138 typedef char *(*bus_get_fw_dev_path)(DeviceState *dev);
139 typedef int (qbus_resetfn)(BusState *bus);
140
141 struct BusInfo {
142 const char *name;
143 size_t size;
144 bus_dev_printfn print_dev;
145 bus_get_dev_path get_dev_path;
146 bus_get_fw_dev_path get_fw_dev_path;
147 qbus_resetfn *reset;
148 Property *props;
149 };
150
151 struct BusState {
152 DeviceState *parent;
153 BusInfo *info;
154 const char *name;
155 int allow_hotplug;
156 int qdev_allocated;
157 QTAILQ_HEAD(ChildrenHead, DeviceState) children;
158 QLIST_ENTRY(BusState) sibling;
159 };
160
161 struct Property {
162 const char *name;
163 PropertyInfo *info;
164 int offset;
165 int bitnr;
166 void *defval;
167 };
168
169 enum PropertyType {
170 PROP_TYPE_UNSPEC = 0,
171 PROP_TYPE_UINT8,
172 PROP_TYPE_UINT16,
173 PROP_TYPE_UINT32,
174 PROP_TYPE_INT32,
175 PROP_TYPE_UINT64,
176 PROP_TYPE_TADDR,
177 PROP_TYPE_MACADDR,
178 PROP_TYPE_LOSTTICKPOLICY,
179 PROP_TYPE_DRIVE,
180 PROP_TYPE_CHR,
181 PROP_TYPE_STRING,
182 PROP_TYPE_NETDEV,
183 PROP_TYPE_VLAN,
184 PROP_TYPE_PTR,
185 PROP_TYPE_BIT,
186 };
187
188 struct PropertyInfo {
189 const char *name;
190 const char *legacy_name;
191 size_t size;
192 enum PropertyType type;
193 int64_t min;
194 int64_t max;
195 int (*parse)(DeviceState *dev, Property *prop, const char *str);
196 int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
197 void (*free)(DeviceState *dev, Property *prop);
198 DevicePropertyAccessor *get;
199 DevicePropertyAccessor *set;
200 };
201
202 typedef struct GlobalProperty {
203 const char *driver;
204 const char *property;
205 const char *value;
206 QTAILQ_ENTRY(GlobalProperty) next;
207 } GlobalProperty;
208
209 /*** Board API. This should go away once we have a machine config file. ***/
210
211 DeviceState *qdev_create(BusState *bus, const char *name);
212 DeviceState *qdev_try_create(BusState *bus, const char *name);
213 bool qdev_exists(const char *name);
214 int qdev_device_help(QemuOpts *opts);
215 DeviceState *qdev_device_add(QemuOpts *opts);
216 int qdev_init(DeviceState *dev) QEMU_WARN_UNUSED_RESULT;
217 void qdev_init_nofail(DeviceState *dev);
218 void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
219 int required_for_version);
220 int qdev_unplug(DeviceState *dev);
221 void qdev_free(DeviceState *dev);
222 int qdev_simple_unplug_cb(DeviceState *dev);
223 void qdev_machine_creation_done(void);
224 bool qdev_machine_modified(void);
225
226 qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
227 void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
228
229 BusState *qdev_get_child_bus(DeviceState *dev, const char *name);
230
231 /*** Device API. ***/
232
233 /* Register device properties. */
234 /* GPIO inputs also double as IRQ sinks. */
235 void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n);
236 void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n);
237
238 CharDriverState *qdev_init_chardev(DeviceState *dev);
239
240 BusState *qdev_get_parent_bus(DeviceState *dev);
241
242 /*** BUS API. ***/
243
244 DeviceState *qdev_find_recursive(BusState *bus, const char *id);
245
246 /* Returns 0 to walk children, > 0 to skip walk, < 0 to terminate walk. */
247 typedef int (qbus_walkerfn)(BusState *bus, void *opaque);
248 typedef int (qdev_walkerfn)(DeviceState *dev, void *opaque);
249
250 void qbus_create_inplace(BusState *bus, BusInfo *info,
251 DeviceState *parent, const char *name);
252 BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name);
253 /* Returns > 0 if either devfn or busfn skip walk somewhere in cursion,
254 * < 0 if either devfn or busfn terminate walk somewhere in cursion,
255 * 0 otherwise. */
256 int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn,
257 qbus_walkerfn *busfn, void *opaque);
258 int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn,
259 qbus_walkerfn *busfn, void *opaque);
260 void qdev_reset_all(DeviceState *dev);
261 void qbus_reset_all_fn(void *opaque);
262
263 void qbus_free(BusState *bus);
264
265 #define FROM_QBUS(type, dev) DO_UPCAST(type, qbus, dev)
266
267 /* This should go away once we get rid of the NULL bus hack */
268 BusState *sysbus_get_default(void);
269
270 /*** monitor commands ***/
271
272 void do_info_qtree(Monitor *mon);
273 void do_info_qdm(Monitor *mon);
274 int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data);
275 int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
276
277 /*** qdev-properties.c ***/
278
279 extern PropertyInfo qdev_prop_bit;
280 extern PropertyInfo qdev_prop_uint8;
281 extern PropertyInfo qdev_prop_uint16;
282 extern PropertyInfo qdev_prop_uint32;
283 extern PropertyInfo qdev_prop_int32;
284 extern PropertyInfo qdev_prop_uint64;
285 extern PropertyInfo qdev_prop_hex8;
286 extern PropertyInfo qdev_prop_hex32;
287 extern PropertyInfo qdev_prop_hex64;
288 extern PropertyInfo qdev_prop_string;
289 extern PropertyInfo qdev_prop_chr;
290 extern PropertyInfo qdev_prop_ptr;
291 extern PropertyInfo qdev_prop_macaddr;
292 extern PropertyInfo qdev_prop_losttickpolicy;
293 extern PropertyInfo qdev_prop_drive;
294 extern PropertyInfo qdev_prop_netdev;
295 extern PropertyInfo qdev_prop_vlan;
296 extern PropertyInfo qdev_prop_pci_devfn;
297
298 #define DEFINE_PROP(_name, _state, _field, _prop, _type) { \
299 .name = (_name), \
300 .info = &(_prop), \
301 .offset = offsetof(_state, _field) \
302 + type_check(_type,typeof_field(_state, _field)), \
303 }
304 #define DEFINE_PROP_DEFAULT(_name, _state, _field, _defval, _prop, _type) { \
305 .name = (_name), \
306 .info = &(_prop), \
307 .offset = offsetof(_state, _field) \
308 + type_check(_type,typeof_field(_state, _field)), \
309 .defval = (_type[]) { _defval }, \
310 }
311 #define DEFINE_PROP_BIT(_name, _state, _field, _bit, _defval) { \
312 .name = (_name), \
313 .info = &(qdev_prop_bit), \
314 .bitnr = (_bit), \
315 .offset = offsetof(_state, _field) \
316 + type_check(uint32_t,typeof_field(_state, _field)), \
317 .defval = (bool[]) { (_defval) }, \
318 }
319
320 #define DEFINE_PROP_UINT8(_n, _s, _f, _d) \
321 DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint8, uint8_t)
322 #define DEFINE_PROP_UINT16(_n, _s, _f, _d) \
323 DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint16, uint16_t)
324 #define DEFINE_PROP_UINT32(_n, _s, _f, _d) \
325 DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint32, uint32_t)
326 #define DEFINE_PROP_INT32(_n, _s, _f, _d) \
327 DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_int32, int32_t)
328 #define DEFINE_PROP_UINT64(_n, _s, _f, _d) \
329 DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_uint64, uint64_t)
330 #define DEFINE_PROP_HEX8(_n, _s, _f, _d) \
331 DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex8, uint8_t)
332 #define DEFINE_PROP_HEX32(_n, _s, _f, _d) \
333 DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex32, uint32_t)
334 #define DEFINE_PROP_HEX64(_n, _s, _f, _d) \
335 DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex64, uint64_t)
336 #define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d) \
337 DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_pci_devfn, uint32_t)
338
339 #define DEFINE_PROP_PTR(_n, _s, _f) \
340 DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, void*)
341 #define DEFINE_PROP_CHR(_n, _s, _f) \
342 DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharDriverState*)
343 #define DEFINE_PROP_STRING(_n, _s, _f) \
344 DEFINE_PROP(_n, _s, _f, qdev_prop_string, char*)
345 #define DEFINE_PROP_NETDEV(_n, _s, _f) \
346 DEFINE_PROP(_n, _s, _f, qdev_prop_netdev, VLANClientState*)
347 #define DEFINE_PROP_VLAN(_n, _s, _f) \
348 DEFINE_PROP(_n, _s, _f, qdev_prop_vlan, VLANState*)
349 #define DEFINE_PROP_DRIVE(_n, _s, _f) \
350 DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockDriverState *)
351 #define DEFINE_PROP_MACADDR(_n, _s, _f) \
352 DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
353 #define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
354 DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_losttickpolicy, \
355 LostTickPolicy)
356
357 #define DEFINE_PROP_END_OF_LIST() \
358 {}
359
360 /* Set properties between creation and init. */
361 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop);
362 int qdev_prop_exists(DeviceState *dev, const char *name);
363 int qdev_prop_parse(DeviceState *dev, const char *name, const char *value);
364 void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type);
365 void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value);
366 void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value);
367 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value);
368 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value);
369 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value);
370 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value);
371 void qdev_prop_set_string(DeviceState *dev, const char *name, char *value);
372 void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value);
373 void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value);
374 void qdev_prop_set_vlan(DeviceState *dev, const char *name, VLANState *value);
375 int qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value) QEMU_WARN_UNUSED_RESULT;
376 void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, BlockDriverState *value);
377 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
378 void qdev_prop_set_losttickpolicy(DeviceState *dev, const char *name,
379 LostTickPolicy *value);
380 /* FIXME: Remove opaque pointer properties. */
381 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
382 void qdev_prop_set_defaults(DeviceState *dev, Property *props);
383
384 void qdev_prop_register_global_list(GlobalProperty *props);
385 void qdev_prop_set_globals(DeviceState *dev);
386 void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev,
387 Property *prop, const char *value);
388
389 char *qdev_get_fw_dev_path(DeviceState *dev);
390
391 /* This is a nasty hack to allow passing a NULL bus to qdev_create. */
392 extern struct BusInfo system_bus_info;
393
394 /**
395 * @qdev_ref
396 *
397 * Increase the reference count of a device. A device cannot be freed as long
398 * as its reference count is greater than zero.
399 *
400 * @dev - the device
401 */
402 void qdev_ref(DeviceState *dev);
403
404 /**
405 * @qdef_unref
406 *
407 * Decrease the reference count of a device. A device cannot be freed as long
408 * as its reference count is greater than zero.
409 *
410 * @dev - the device
411 */
412 void qdev_unref(DeviceState *dev);
413
414 /**
415 * @qdev_property_add - add a new property to a device
416 *
417 * @dev - the device to add a property to
418 *
419 * @name - the name of the property. This can contain any character except for
420 * a forward slash. In general, you should use hyphens '-' instead of
421 * underscores '_' when naming properties.
422 *
423 * @type - the type name of the property. This namespace is pretty loosely
424 * defined. Sub namespaces are constructed by using a prefix and then
425 * to angle brackets. For instance, the type 'virtio-net-pci' in the
426 * 'link' namespace would be 'link<virtio-net-pci>'.
427 *
428 * @get - the getter to be called to read a property. If this is NULL, then
429 * the property cannot be read.
430 *
431 * @set - the setter to be called to write a property. If this is NULL,
432 * then the property cannot be written.
433 *
434 * @release - called when the property is removed from the device. This is
435 * meant to allow a property to free its opaque upon device
436 * destruction. This may be NULL.
437 *
438 * @opaque - an opaque pointer to pass to the callbacks for the property
439 *
440 * @errp - returns an error if this function fails
441 */
442 void qdev_property_add(DeviceState *dev, const char *name, const char *type,
443 DevicePropertyAccessor *get, DevicePropertyAccessor *set,
444 DevicePropertyRelease *release,
445 void *opaque, Error **errp);
446
447 /**
448 * @qdev_property_get - reads a property from a device
449 *
450 * @dev - the device
451 *
452 * @v - the visitor that will receive the property value. This should be an
453 * Output visitor and the data will be written with @name as the name.
454 *
455 * @name - the name of the property
456 *
457 * @errp - returns an error if this function fails
458 */
459 void qdev_property_get(DeviceState *dev, Visitor *v, const char *name,
460 Error **errp);
461
462 /**
463 * @qdev_property_set - writes a property to a device
464 *
465 * @dev - the device
466 *
467 * @v - the visitor that will be used to write the property value. This should
468 * be an Input visitor and the data will be first read with @name as the
469 * name and then written as the property value.
470 *
471 * @name - the name of the property
472 *
473 * @errp - returns an error if this function fails
474 */
475 void qdev_property_set(DeviceState *dev, Visitor *v, const char *name,
476 Error **errp);
477
478 /**
479 * @qdev_property_get_type - returns the type of a property
480 *
481 * @dev - the device
482 *
483 * @name - the name of the property
484 *
485 * @errp - returns an error if this function fails
486 *
487 * Returns:
488 * The type name of the property.
489 */
490 const char *qdev_property_get_type(DeviceState *dev, const char *name,
491 Error **errp);
492
493 /**
494 * @qdev_property_add_static - add a @Property to a device referencing a
495 * field in a struct.
496 */
497 void qdev_property_add_static(DeviceState *dev, Property *prop, Error **errp);
498
499 /**
500 * @qdev_get_root - returns the root device of the composition tree
501 *
502 * Returns:
503 * The root of the composition tree.
504 */
505 DeviceState *qdev_get_root(void);
506
507 /**
508 * @qdev_get_canonical_path - returns the canonical path for a device. This
509 * is the path within the composition tree starting from the root.
510 *
511 * Returns:
512 * The canonical path in the composition tree.
513 */
514 gchar *qdev_get_canonical_path(DeviceState *dev);
515
516 /**
517 * @qdev_resolve_path - resolves a path returning a device
518 *
519 * There are two types of supported paths--absolute paths and partial paths.
520 *
521 * Absolute paths are derived from the root device and can follow child<> or
522 * link<> properties. Since they can follow link<> properties, they can be
523 * arbitrarily long. Absolute paths look like absolute filenames and are
524 * prefixed with a leading slash.
525 *
526 * Partial paths look like relative filenames. They do not begin with a
527 * prefix. The matching rules for partial paths are subtle but designed to make
528 * specifying devices easy. At each level of the composition tree, the partial
529 * path is matched as an absolute path. The first match is not returned. At
530 * least two matches are searched for. A successful result is only returned if
531 * only one match is founded. If more than one match is found, a flag is
532 * return to indicate that the match was ambiguous.
533 *
534 * @path - the path to resolve
535 *
536 * @ambiguous - returns true if the path resolution failed because of an
537 * ambiguous match
538 *
539 * Returns:
540 * The matched device or NULL on path lookup failure.
541 */
542 DeviceState *qdev_resolve_path(const char *path, bool *ambiguous);
543
544 /**
545 * @qdev_property_add_child - Add a child property to a device
546 *
547 * Child properties form the composition tree. All devices need to be a child
548 * of another device. Devices can only be a child of one device.
549 *
550 * There is no way for a child to determine what its parent is. It is not
551 * a bidirectional relationship. This is by design.
552 *
553 * @dev - the device to add a property to
554 *
555 * @name - the name of the property
556 *
557 * @child - the child device
558 *
559 * @errp - if an error occurs, a pointer to an area to store the area
560 */
561 void qdev_property_add_child(DeviceState *dev, const char *name,
562 DeviceState *child, Error **errp);
563
564 /**
565 * @qdev_property_add_link - Add a link property to a device
566 *
567 * Links establish relationships between devices. Links are unidirectional
568 * although two links can be combined to form a bidirectional relationship
569 * between devices.
570 *
571 * Links form the graph in the device model.
572 *
573 * @dev - the device to add a property to
574 *
575 * @name - the name of the property
576 *
577 * @type - the qdev type of the link
578 *
579 * @child - a pointer to where the link device reference is stored
580 *
581 * @errp - if an error occurs, a pointer to an area to store the area
582 */
583 void qdev_property_add_link(DeviceState *dev, const char *name,
584 const char *type, DeviceState **child,
585 Error **errp);
586
587 /**
588 * @qdev_property_add_str
589 *
590 * Add a string property using getters/setters. This function will add a
591 * property of type 'string'.
592 *
593 * @dev - the device to add a property to
594 *
595 * @name - the name of the property
596 *
597 * @get - the getter or NULL if the property is write-only. This function must
598 * return a string to be freed by @g_free().
599 *
600 * @set - the setter or NULL if the property is read-only
601 *
602 * @errp - if an error occurs, a pointer to an area to store the error
603 */
604 void qdev_property_add_str(DeviceState *dev, const char *name,
605 char *(*get)(DeviceState *, Error **),
606 void (*set)(DeviceState *, const char *, Error **),
607 Error **errp);
608
609 /**
610 * @qdev_get_type
611 *
612 * Returns the string representation of the type of this object.
613 *
614 * @dev - the device
615 *
616 * @errp - if an error occurs, a pointer to an area to store the error
617 *
618 * Returns: a string representing the type. This must be freed by the caller
619 * with g_free().
620 */
621 char *qdev_get_type(DeviceState *dev, Error **errp);
622
623 /**
624 * @qdev_machine_init
625 *
626 * Initialize platform devices before machine init. This is a hack until full
627 * support for composition is added.
628 */
629 void qdev_machine_init(void);
630
631 /**
632 * @device_reset
633 *
634 * Reset a single device (by calling the reset method).
635 */
636 void device_reset(DeviceState *dev);
637
638 const VMStateDescription *qdev_get_vmsd(DeviceState *dev);
639
640 const char *qdev_fw_name(DeviceState *dev);
641
642 BusInfo *qdev_get_bus_info(DeviceState *dev);
643
644 Property *qdev_get_props(DeviceState *dev);
645
646 /* FIXME: make this a link<> */
647 void qdev_set_parent_bus(DeviceState *dev, BusState *bus);
648
649 #endif