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25#include "qemu/osdep.h"
26#include <sys/signal.h>
27
28#include "hw/hw.h"
29#include "hw/sysbus.h"
30#include "hw/boards.h"
31#include "qemu/log.h"
32#include "qapi/error.h"
33#include "hw/xen/xen-legacy-backend.h"
34#include "hw/xen/xen_pvdev.h"
35#include "monitor/qdev.h"
36
37#include <xen/grant_table.h>
38
39DeviceState *xen_sysdev;
40BusState *xen_sysbus;
41
42
43
44
45struct xs_handle *xenstore;
46const char *xen_protocol;
47
48
49static bool xen_feature_grant_copy;
50static int debug;
51
52int xenstore_write_be_str(struct XenLegacyDevice *xendev, const char *node,
53 const char *val)
54{
55 return xenstore_write_str(xendev->be, node, val);
56}
57
58int xenstore_write_be_int(struct XenLegacyDevice *xendev, const char *node,
59 int ival)
60{
61 return xenstore_write_int(xendev->be, node, ival);
62}
63
64int xenstore_write_be_int64(struct XenLegacyDevice *xendev, const char *node,
65 int64_t ival)
66{
67 return xenstore_write_int64(xendev->be, node, ival);
68}
69
70char *xenstore_read_be_str(struct XenLegacyDevice *xendev, const char *node)
71{
72 return xenstore_read_str(xendev->be, node);
73}
74
75int xenstore_read_be_int(struct XenLegacyDevice *xendev, const char *node,
76 int *ival)
77{
78 return xenstore_read_int(xendev->be, node, ival);
79}
80
81char *xenstore_read_fe_str(struct XenLegacyDevice *xendev, const char *node)
82{
83 return xenstore_read_str(xendev->fe, node);
84}
85
86int xenstore_read_fe_int(struct XenLegacyDevice *xendev, const char *node,
87 int *ival)
88{
89 return xenstore_read_int(xendev->fe, node, ival);
90}
91
92int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node,
93 uint64_t *uval)
94{
95 return xenstore_read_uint64(xendev->fe, node, uval);
96}
97
98
99
100int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state)
101{
102 int rc;
103
104 rc = xenstore_write_be_int(xendev, "state", state);
105 if (rc < 0) {
106 return rc;
107 }
108 xen_pv_printf(xendev, 1, "backend state: %s -> %s\n",
109 xenbus_strstate(xendev->be_state), xenbus_strstate(state));
110 xendev->be_state = state;
111 return 0;
112}
113
114void xen_be_set_max_grant_refs(struct XenLegacyDevice *xendev,
115 unsigned int nr_refs)
116{
117 assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
118
119 if (xengnttab_set_max_grants(xendev->gnttabdev, nr_refs)) {
120 xen_pv_printf(xendev, 0, "xengnttab_set_max_grants failed: %s\n",
121 strerror(errno));
122 }
123}
124
125void *xen_be_map_grant_refs(struct XenLegacyDevice *xendev, uint32_t *refs,
126 unsigned int nr_refs, int prot)
127{
128 void *ptr;
129
130 assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
131
132 ptr = xengnttab_map_domain_grant_refs(xendev->gnttabdev, nr_refs,
133 xen_domid, refs, prot);
134 if (!ptr) {
135 xen_pv_printf(xendev, 0,
136 "xengnttab_map_domain_grant_refs failed: %s\n",
137 strerror(errno));
138 }
139
140 return ptr;
141}
142
143void xen_be_unmap_grant_refs(struct XenLegacyDevice *xendev, void *ptr,
144 unsigned int nr_refs)
145{
146 assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
147
148 if (xengnttab_unmap(xendev->gnttabdev, ptr, nr_refs)) {
149 xen_pv_printf(xendev, 0, "xengnttab_unmap failed: %s\n",
150 strerror(errno));
151 }
152}
153
154static int compat_copy_grant_refs(struct XenLegacyDevice *xendev,
155 bool to_domain,
156 XenGrantCopySegment segs[],
157 unsigned int nr_segs)
158{
159 uint32_t *refs = g_new(uint32_t, nr_segs);
160 int prot = to_domain ? PROT_WRITE : PROT_READ;
161 void *pages;
162 unsigned int i;
163
164 for (i = 0; i < nr_segs; i++) {
165 XenGrantCopySegment *seg = &segs[i];
166
167 refs[i] = to_domain ?
168 seg->dest.foreign.ref : seg->source.foreign.ref;
169 }
170
171 pages = xengnttab_map_domain_grant_refs(xendev->gnttabdev, nr_segs,
172 xen_domid, refs, prot);
173 if (!pages) {
174 xen_pv_printf(xendev, 0,
175 "xengnttab_map_domain_grant_refs failed: %s\n",
176 strerror(errno));
177 g_free(refs);
178 return -1;
179 }
180
181 for (i = 0; i < nr_segs; i++) {
182 XenGrantCopySegment *seg = &segs[i];
183 void *page = pages + (i * XC_PAGE_SIZE);
184
185 if (to_domain) {
186 memcpy(page + seg->dest.foreign.offset, seg->source.virt,
187 seg->len);
188 } else {
189 memcpy(seg->dest.virt, page + seg->source.foreign.offset,
190 seg->len);
191 }
192 }
193
194 if (xengnttab_unmap(xendev->gnttabdev, pages, nr_segs)) {
195 xen_pv_printf(xendev, 0, "xengnttab_unmap failed: %s\n",
196 strerror(errno));
197 }
198
199 g_free(refs);
200 return 0;
201}
202
203int xen_be_copy_grant_refs(struct XenLegacyDevice *xendev,
204 bool to_domain,
205 XenGrantCopySegment segs[],
206 unsigned int nr_segs)
207{
208 xengnttab_grant_copy_segment_t *xengnttab_segs;
209 unsigned int i;
210 int rc;
211
212 assert(xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV);
213
214 if (!xen_feature_grant_copy) {
215 return compat_copy_grant_refs(xendev, to_domain, segs, nr_segs);
216 }
217
218 xengnttab_segs = g_new0(xengnttab_grant_copy_segment_t, nr_segs);
219
220 for (i = 0; i < nr_segs; i++) {
221 XenGrantCopySegment *seg = &segs[i];
222 xengnttab_grant_copy_segment_t *xengnttab_seg = &xengnttab_segs[i];
223
224 if (to_domain) {
225 xengnttab_seg->flags = GNTCOPY_dest_gref;
226 xengnttab_seg->dest.foreign.domid = xen_domid;
227 xengnttab_seg->dest.foreign.ref = seg->dest.foreign.ref;
228 xengnttab_seg->dest.foreign.offset = seg->dest.foreign.offset;
229 xengnttab_seg->source.virt = seg->source.virt;
230 } else {
231 xengnttab_seg->flags = GNTCOPY_source_gref;
232 xengnttab_seg->source.foreign.domid = xen_domid;
233 xengnttab_seg->source.foreign.ref = seg->source.foreign.ref;
234 xengnttab_seg->source.foreign.offset =
235 seg->source.foreign.offset;
236 xengnttab_seg->dest.virt = seg->dest.virt;
237 }
238
239 xengnttab_seg->len = seg->len;
240 }
241
242 rc = xengnttab_grant_copy(xendev->gnttabdev, nr_segs, xengnttab_segs);
243
244 if (rc) {
245 xen_pv_printf(xendev, 0, "xengnttab_copy failed: %s\n",
246 strerror(errno));
247 }
248
249 for (i = 0; i < nr_segs; i++) {
250 xengnttab_grant_copy_segment_t *xengnttab_seg =
251 &xengnttab_segs[i];
252
253 if (xengnttab_seg->status != GNTST_okay) {
254 xen_pv_printf(xendev, 0, "segment[%u] status: %d\n", i,
255 xengnttab_seg->status);
256 rc = -1;
257 }
258 }
259
260 g_free(xengnttab_segs);
261 return rc;
262}
263
264
265
266
267static struct XenLegacyDevice *xen_be_get_xendev(const char *type, int dom,
268 int dev,
269 struct XenDevOps *ops)
270{
271 struct XenLegacyDevice *xendev;
272
273 xendev = xen_pv_find_xendev(type, dom, dev);
274 if (xendev) {
275 return xendev;
276 }
277
278
279 xendev = g_malloc0(ops->size);
280 object_initialize(&xendev->qdev, ops->size, TYPE_XENBACKEND);
281 OBJECT(xendev)->free = g_free;
282 qdev_set_parent_bus(DEVICE(xendev), xen_sysbus);
283 qdev_set_id(DEVICE(xendev), g_strdup_printf("xen-%s-%d", type, dev));
284 qdev_init_nofail(DEVICE(xendev));
285 object_unref(OBJECT(xendev));
286
287 xendev->type = type;
288 xendev->dom = dom;
289 xendev->dev = dev;
290 xendev->ops = ops;
291
292 snprintf(xendev->be, sizeof(xendev->be), "backend/%s/%d/%d",
293 xendev->type, xendev->dom, xendev->dev);
294 snprintf(xendev->name, sizeof(xendev->name), "%s-%d",
295 xendev->type, xendev->dev);
296
297 xendev->debug = debug;
298 xendev->local_port = -1;
299
300 xendev->evtchndev = xenevtchn_open(NULL, 0);
301 if (xendev->evtchndev == NULL) {
302 xen_pv_printf(NULL, 0, "can't open evtchn device\n");
303 qdev_unplug(DEVICE(xendev), NULL);
304 return NULL;
305 }
306 qemu_set_cloexec(xenevtchn_fd(xendev->evtchndev));
307
308 xen_pv_insert_xendev(xendev);
309
310 if (xendev->ops->alloc) {
311 xendev->ops->alloc(xendev);
312 }
313
314 return xendev;
315}
316
317
318
319
320
321
322
323static void xen_be_backend_changed(struct XenLegacyDevice *xendev,
324 const char *node)
325{
326 if (node == NULL || strcmp(node, "online") == 0) {
327 if (xenstore_read_be_int(xendev, "online", &xendev->online) == -1) {
328 xendev->online = 0;
329 }
330 }
331
332 if (node) {
333 xen_pv_printf(xendev, 2, "backend update: %s\n", node);
334 if (xendev->ops->backend_changed) {
335 xendev->ops->backend_changed(xendev, node);
336 }
337 }
338}
339
340static void xen_be_frontend_changed(struct XenLegacyDevice *xendev,
341 const char *node)
342{
343 int fe_state;
344
345 if (node == NULL || strcmp(node, "state") == 0) {
346 if (xenstore_read_fe_int(xendev, "state", &fe_state) == -1) {
347 fe_state = XenbusStateUnknown;
348 }
349 if (xendev->fe_state != fe_state) {
350 xen_pv_printf(xendev, 1, "frontend state: %s -> %s\n",
351 xenbus_strstate(xendev->fe_state),
352 xenbus_strstate(fe_state));
353 }
354 xendev->fe_state = fe_state;
355 }
356 if (node == NULL || strcmp(node, "protocol") == 0) {
357 g_free(xendev->protocol);
358 xendev->protocol = xenstore_read_fe_str(xendev, "protocol");
359 if (xendev->protocol) {
360 xen_pv_printf(xendev, 1, "frontend protocol: %s\n",
361 xendev->protocol);
362 }
363 }
364
365 if (node) {
366 xen_pv_printf(xendev, 2, "frontend update: %s\n", node);
367 if (xendev->ops->frontend_changed) {
368 xendev->ops->frontend_changed(xendev, node);
369 }
370 }
371}
372
373
374
375
376
377
378
379
380
381
382
383
384static int xen_be_try_setup(struct XenLegacyDevice *xendev)
385{
386 char token[XEN_BUFSIZE];
387 int be_state;
388
389 if (xenstore_read_be_int(xendev, "state", &be_state) == -1) {
390 xen_pv_printf(xendev, 0, "reading backend state failed\n");
391 return -1;
392 }
393
394 if (be_state != XenbusStateInitialising) {
395 xen_pv_printf(xendev, 0, "initial backend state is wrong (%s)\n",
396 xenbus_strstate(be_state));
397 return -1;
398 }
399
400 xendev->fe = xenstore_read_be_str(xendev, "frontend");
401 if (xendev->fe == NULL) {
402 xen_pv_printf(xendev, 0, "reading frontend path failed\n");
403 return -1;
404 }
405
406
407 snprintf(token, sizeof(token), "fe:%p", xendev);
408 if (!xs_watch(xenstore, xendev->fe, token)) {
409 xen_pv_printf(xendev, 0, "watching frontend path (%s) failed\n",
410 xendev->fe);
411 return -1;
412 }
413 xen_be_set_state(xendev, XenbusStateInitialising);
414
415 xen_be_backend_changed(xendev, NULL);
416 xen_be_frontend_changed(xendev, NULL);
417 return 0;
418}
419
420
421
422
423
424
425
426
427
428static int xen_be_try_init(struct XenLegacyDevice *xendev)
429{
430 int rc = 0;
431
432 if (!xendev->online) {
433 xen_pv_printf(xendev, 1, "not online\n");
434 return -1;
435 }
436
437 if (xendev->ops->init) {
438 rc = xendev->ops->init(xendev);
439 }
440 if (rc != 0) {
441 xen_pv_printf(xendev, 1, "init() failed\n");
442 return rc;
443 }
444
445 xenstore_write_be_str(xendev, "hotplug-status", "connected");
446 xen_be_set_state(xendev, XenbusStateInitWait);
447 return 0;
448}
449
450
451
452
453
454
455
456
457static int xen_be_try_initialise(struct XenLegacyDevice *xendev)
458{
459 int rc = 0;
460
461 if (xendev->fe_state != XenbusStateInitialised &&
462 xendev->fe_state != XenbusStateConnected) {
463 if (xendev->ops->flags & DEVOPS_FLAG_IGNORE_STATE) {
464 xen_pv_printf(xendev, 2, "frontend not ready, ignoring\n");
465 } else {
466 xen_pv_printf(xendev, 2, "frontend not ready (yet)\n");
467 return -1;
468 }
469 }
470
471 if (xendev->ops->flags & DEVOPS_FLAG_NEED_GNTDEV) {
472 xendev->gnttabdev = xengnttab_open(NULL, 0);
473 if (xendev->gnttabdev == NULL) {
474 xen_pv_printf(NULL, 0, "can't open gnttab device\n");
475 return -1;
476 }
477 } else {
478 xendev->gnttabdev = NULL;
479 }
480
481 if (xendev->ops->initialise) {
482 rc = xendev->ops->initialise(xendev);
483 }
484 if (rc != 0) {
485 xen_pv_printf(xendev, 0, "initialise() failed\n");
486 return rc;
487 }
488
489 xen_be_set_state(xendev, XenbusStateConnected);
490 return 0;
491}
492
493
494
495
496
497
498static void xen_be_try_connected(struct XenLegacyDevice *xendev)
499{
500 if (!xendev->ops->connected) {
501 return;
502 }
503
504 if (xendev->fe_state != XenbusStateConnected) {
505 if (xendev->ops->flags & DEVOPS_FLAG_IGNORE_STATE) {
506 xen_pv_printf(xendev, 2, "frontend not ready, ignoring\n");
507 } else {
508 xen_pv_printf(xendev, 2, "frontend not ready (yet)\n");
509 return;
510 }
511 }
512
513 xendev->ops->connected(xendev);
514}
515
516
517
518
519
520
521static void xen_be_disconnect(struct XenLegacyDevice *xendev,
522 enum xenbus_state state)
523{
524 if (xendev->be_state != XenbusStateClosing &&
525 xendev->be_state != XenbusStateClosed &&
526 xendev->ops->disconnect) {
527 xendev->ops->disconnect(xendev);
528 }
529 if (xendev->gnttabdev) {
530 xengnttab_close(xendev->gnttabdev);
531 xendev->gnttabdev = NULL;
532 }
533 if (xendev->be_state != state) {
534 xen_be_set_state(xendev, state);
535 }
536}
537
538
539
540
541static int xen_be_try_reset(struct XenLegacyDevice *xendev)
542{
543 if (xendev->fe_state != XenbusStateInitialising) {
544 return -1;
545 }
546
547 xen_pv_printf(xendev, 1, "device reset (for re-connect)\n");
548 xen_be_set_state(xendev, XenbusStateInitialising);
549 return 0;
550}
551
552
553
554
555void xen_be_check_state(struct XenLegacyDevice *xendev)
556{
557 int rc = 0;
558
559
560 if (xendev->fe_state == XenbusStateClosing ||
561 xendev->fe_state == XenbusStateClosed) {
562 xen_be_disconnect(xendev, xendev->fe_state);
563 return;
564 }
565
566
567 for (;;) {
568 switch (xendev->be_state) {
569 case XenbusStateUnknown:
570 rc = xen_be_try_setup(xendev);
571 break;
572 case XenbusStateInitialising:
573 rc = xen_be_try_init(xendev);
574 break;
575 case XenbusStateInitWait:
576 rc = xen_be_try_initialise(xendev);
577 break;
578 case XenbusStateConnected:
579
580 xen_be_try_connected(xendev);
581 rc = -1;
582 break;
583 case XenbusStateClosed:
584 rc = xen_be_try_reset(xendev);
585 break;
586 default:
587 rc = -1;
588 }
589 if (rc != 0) {
590 break;
591 }
592 }
593}
594
595
596
597static int xenstore_scan(const char *type, int dom, struct XenDevOps *ops)
598{
599 struct XenLegacyDevice *xendev;
600 char path[XEN_BUFSIZE], token[XEN_BUFSIZE];
601 char **dev = NULL;
602 unsigned int cdev, j;
603
604
605 snprintf(token, sizeof(token), "be:%p:%d:%p", type, dom, ops);
606 snprintf(path, sizeof(path), "backend/%s/%d", type, dom);
607 if (!xs_watch(xenstore, path, token)) {
608 xen_pv_printf(NULL, 0, "xen be: watching backend path (%s) failed\n",
609 path);
610 return -1;
611 }
612
613
614 dev = xs_directory(xenstore, 0, path, &cdev);
615 if (!dev) {
616 return 0;
617 }
618 for (j = 0; j < cdev; j++) {
619 xendev = xen_be_get_xendev(type, dom, atoi(dev[j]), ops);
620 if (xendev == NULL) {
621 continue;
622 }
623 xen_be_check_state(xendev);
624 }
625 free(dev);
626 return 0;
627}
628
629void xenstore_update_be(char *watch, char *type, int dom,
630 struct XenDevOps *ops)
631{
632 struct XenLegacyDevice *xendev;
633 char path[XEN_BUFSIZE], *bepath;
634 unsigned int len, dev;
635
636 len = snprintf(path, sizeof(path), "backend/%s/%d", type, dom);
637 if (strncmp(path, watch, len) != 0) {
638 return;
639 }
640 if (sscanf(watch + len, "/%u/%255s", &dev, path) != 2) {
641 strcpy(path, "");
642 if (sscanf(watch + len, "/%u", &dev) != 1) {
643 dev = -1;
644 }
645 }
646 if (dev == -1) {
647 return;
648 }
649
650 xendev = xen_be_get_xendev(type, dom, dev, ops);
651 if (xendev != NULL) {
652 bepath = xs_read(xenstore, 0, xendev->be, &len);
653 if (bepath == NULL) {
654 xen_pv_del_xendev(xendev);
655 } else {
656 free(bepath);
657 xen_be_backend_changed(xendev, path);
658 xen_be_check_state(xendev);
659 }
660 }
661}
662
663void xenstore_update_fe(char *watch, struct XenLegacyDevice *xendev)
664{
665 char *node;
666 unsigned int len;
667
668 len = strlen(xendev->fe);
669 if (strncmp(xendev->fe, watch, len) != 0) {
670 return;
671 }
672 if (watch[len] != '/') {
673 return;
674 }
675 node = watch + len + 1;
676
677 xen_be_frontend_changed(xendev, node);
678 xen_be_check_state(xendev);
679}
680
681
682int xen_be_init(void)
683{
684 xengnttab_handle *gnttabdev;
685
686 xenstore = xs_daemon_open();
687 if (!xenstore) {
688 xen_pv_printf(NULL, 0, "can't connect to xenstored\n");
689 return -1;
690 }
691
692 qemu_set_fd_handler(xs_fileno(xenstore), xenstore_update, NULL, NULL);
693
694 if (xen_xc == NULL || xen_fmem == NULL) {
695
696 goto err;
697 }
698
699 gnttabdev = xengnttab_open(NULL, 0);
700 if (gnttabdev != NULL) {
701 if (xengnttab_grant_copy(gnttabdev, 0, NULL) == 0) {
702 xen_feature_grant_copy = true;
703 }
704 xengnttab_close(gnttabdev);
705 }
706
707 xen_sysdev = qdev_create(NULL, TYPE_XENSYSDEV);
708 qdev_init_nofail(xen_sysdev);
709 xen_sysbus = qbus_create(TYPE_XENSYSBUS, DEVICE(xen_sysdev), "xen-sysbus");
710 qbus_set_bus_hotplug_handler(xen_sysbus, &error_abort);
711
712 return 0;
713
714err:
715 qemu_set_fd_handler(xs_fileno(xenstore), NULL, NULL, NULL);
716 xs_daemon_close(xenstore);
717 xenstore = NULL;
718
719 return -1;
720}
721
722static void xen_set_dynamic_sysbus(void)
723{
724 Object *machine = qdev_get_machine();
725 ObjectClass *oc = object_get_class(machine);
726 MachineClass *mc = MACHINE_CLASS(oc);
727
728 machine_class_allow_dynamic_sysbus_dev(mc, TYPE_XENSYSDEV);
729}
730
731int xen_be_register(const char *type, struct XenDevOps *ops)
732{
733 char path[50];
734 int rc;
735
736 if (ops->backend_register) {
737 rc = ops->backend_register();
738 if (rc) {
739 return rc;
740 }
741 }
742
743 snprintf(path, sizeof(path), "device-model/%u/backends/%s", xen_domid,
744 type);
745 xenstore_mkdir(path, XS_PERM_NONE);
746
747 return xenstore_scan(type, xen_domid, ops);
748}
749
750void xen_be_register_common(void)
751{
752 xen_set_dynamic_sysbus();
753
754 xen_be_register("console", &xen_console_ops);
755 xen_be_register("vkbd", &xen_kbdmouse_ops);
756#ifdef CONFIG_VIRTFS
757 xen_be_register("9pfs", &xen_9pfs_ops);
758#endif
759#ifdef CONFIG_USB_LIBUSB
760 xen_be_register("qusb", &xen_usb_ops);
761#endif
762}
763
764int xen_be_bind_evtchn(struct XenLegacyDevice *xendev)
765{
766 if (xendev->local_port != -1) {
767 return 0;
768 }
769 xendev->local_port = xenevtchn_bind_interdomain
770 (xendev->evtchndev, xendev->dom, xendev->remote_port);
771 if (xendev->local_port == -1) {
772 xen_pv_printf(xendev, 0, "xenevtchn_bind_interdomain failed\n");
773 return -1;
774 }
775 xen_pv_printf(xendev, 2, "bind evtchn port %d\n", xendev->local_port);
776 qemu_set_fd_handler(xenevtchn_fd(xendev->evtchndev),
777 xen_pv_evtchn_event, NULL, xendev);
778 return 0;
779}
780
781
782static Property xendev_properties[] = {
783 DEFINE_PROP_END_OF_LIST(),
784};
785
786static void xendev_class_init(ObjectClass *klass, void *data)
787{
788 DeviceClass *dc = DEVICE_CLASS(klass);
789
790 dc->props = xendev_properties;
791 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
792
793 dc->user_creatable = true;
794}
795
796static const TypeInfo xendev_type_info = {
797 .name = TYPE_XENBACKEND,
798 .parent = TYPE_XENSYSDEV,
799 .class_init = xendev_class_init,
800 .instance_size = sizeof(struct XenLegacyDevice),
801};
802
803static void xen_sysbus_class_init(ObjectClass *klass, void *data)
804{
805 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
806
807 hc->unplug = qdev_simple_device_unplug_cb;
808}
809
810static const TypeInfo xensysbus_info = {
811 .name = TYPE_XENSYSBUS,
812 .parent = TYPE_BUS,
813 .class_init = xen_sysbus_class_init,
814 .interfaces = (InterfaceInfo[]) {
815 { TYPE_HOTPLUG_HANDLER },
816 { }
817 }
818};
819
820static Property xen_sysdev_properties[] = {
821 {},
822};
823
824static void xen_sysdev_class_init(ObjectClass *klass, void *data)
825{
826 DeviceClass *dc = DEVICE_CLASS(klass);
827
828 dc->props = xen_sysdev_properties;
829 dc->bus_type = TYPE_XENSYSBUS;
830}
831
832static const TypeInfo xensysdev_info = {
833 .name = TYPE_XENSYSDEV,
834 .parent = TYPE_SYS_BUS_DEVICE,
835 .instance_size = sizeof(SysBusDevice),
836 .class_init = xen_sysdev_class_init,
837};
838
839static void xenbe_register_types(void)
840{
841 type_register_static(&xensysbus_info);
842 type_register_static(&xensysdev_info);
843 type_register_static(&xendev_type_info);
844}
845
846type_init(xenbe_register_types)
847