?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
8322 nl: misleading-indentation
[unleashed/tickless.git] / usr / src / uts / common / os / sunndi.c
blob93c66fbcf9e8843a93c40732c4e84b7190ba9596
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <sys/types.h>
27 #include <sys/param.h>
28 #include <sys/systm.h>
29 #include <sys/buf.h>
30 #include <sys/uio.h>
31 #include <sys/cred.h>
32 #include <sys/poll.h>
33 #include <sys/mman.h>
34 #include <sys/kmem.h>
35 #include <sys/model.h>
36 #include <sys/file.h>
37 #include <sys/proc.h>
38 #include <sys/open.h>
39 #include <sys/user.h>
40 #include <sys/t_lock.h>
41 #include <sys/vm.h>
42 #include <sys/stat.h>
43 #include <vm/hat.h>
44 #include <vm/seg.h>
45 #include <vm/as.h>
46 #include <sys/cmn_err.h>
47 #include <sys/debug.h>
48 #include <sys/avintr.h>
49 #include <sys/autoconf.h>
50 #include <sys/sunddi.h>
51 #include <sys/esunddi.h>
52 #include <sys/sunndi.h>
53 #include <sys/ddi.h>
54 #include <sys/kstat.h>
55 #include <sys/conf.h>
56 #include <sys/ddi_impldefs.h> /* include implementation structure defs */
57 #include <sys/ndi_impldefs.h>
58 #include <sys/hwconf.h>
59 #include <sys/pathname.h>
60 #include <sys/modctl.h>
61 #include <sys/epm.h>
62 #include <sys/devctl.h>
63 #include <sys/callb.h>
64 #include <sys/bootconf.h>
65 #include <sys/dacf_impl.h>
66 #include <sys/nvpair.h>
67 #include <sys/sunmdi.h>
68 #include <sys/fs/dv_node.h>
69 #include <sys/sunldi_impl.h>
70
71 #ifdef __sparc
72 #include <sys/archsystm.h> /* getpil/setpil */
73 #include <sys/membar.h> /* membar_sync */
74 #endif
75
76 /*
77 * ndi property handling
78 */
79 int
80 ndi_prop_update_int(dev_t match_dev, dev_info_t *dip,
81 char *name, int data)
82 {
83 return (ddi_prop_update_common(match_dev, dip,
84 DDI_PROP_HW_DEF | DDI_PROP_TYPE_INT | DDI_PROP_DONTSLEEP,
85 name, &data, 1, ddi_prop_fm_encode_ints));
86 }
87
88 int
89 ndi_prop_update_int64(dev_t match_dev, dev_info_t *dip,
90 char *name, int64_t data)
91 {
92 return (ddi_prop_update_common(match_dev, dip,
93 DDI_PROP_HW_DEF | DDI_PROP_TYPE_INT64 | DDI_PROP_DONTSLEEP,
94 name, &data, 1, ddi_prop_fm_encode_int64));
95 }
96
97 int
98 ndi_prop_create_boolean(dev_t match_dev, dev_info_t *dip,
99 char *name)
100 {
101 return (ddi_prop_update_common(match_dev, dip,
102 DDI_PROP_HW_DEF | DDI_PROP_TYPE_ANY | DDI_PROP_DONTSLEEP,
103 name, NULL, 0, ddi_prop_fm_encode_bytes));
104 }
105
106 int
107 ndi_prop_update_int_array(dev_t match_dev, dev_info_t *dip,
108 char *name, int *data, uint_t nelements)
109 {
110 return (ddi_prop_update_common(match_dev, dip,
111 DDI_PROP_HW_DEF | DDI_PROP_TYPE_INT | DDI_PROP_DONTSLEEP,
112 name, data, nelements, ddi_prop_fm_encode_ints));
113 }
114
115 int
116 ndi_prop_update_int64_array(dev_t match_dev, dev_info_t *dip,
117 char *name, int64_t *data, uint_t nelements)
118 {
119 return (ddi_prop_update_common(match_dev, dip,
120 DDI_PROP_HW_DEF | DDI_PROP_TYPE_INT64 | DDI_PROP_DONTSLEEP,
121 name, data, nelements, ddi_prop_fm_encode_int64));
122 }
123
124 int
125 ndi_prop_update_string(dev_t match_dev, dev_info_t *dip,
126 char *name, char *data)
127 {
128 return (ddi_prop_update_common(match_dev, dip,
129 DDI_PROP_HW_DEF | DDI_PROP_TYPE_STRING | DDI_PROP_DONTSLEEP,
130 name, &data, 1, ddi_prop_fm_encode_string));
131 }
132
133 int
134 ndi_prop_update_string_array(dev_t match_dev, dev_info_t *dip,
135 char *name, char **data, uint_t nelements)
136 {
137 return (ddi_prop_update_common(match_dev, dip,
138 DDI_PROP_HW_DEF | DDI_PROP_TYPE_STRING | DDI_PROP_DONTSLEEP,
139 name, data, nelements,
140 ddi_prop_fm_encode_strings));
141 }
142
143 int
144 ndi_prop_update_byte_array(dev_t match_dev, dev_info_t *dip,
145 char *name, uchar_t *data, uint_t nelements)
146 {
147 if (nelements == 0)
148 return (DDI_PROP_INVAL_ARG);
149
150 return (ddi_prop_update_common(match_dev, dip,
151 DDI_PROP_HW_DEF | DDI_PROP_TYPE_BYTE | DDI_PROP_DONTSLEEP,
152 name, data, nelements, ddi_prop_fm_encode_bytes));
153 }
154
155 int
156 ndi_prop_remove(dev_t dev, dev_info_t *dip, char *name)
157 {
158 return (ddi_prop_remove_common(dev, dip, name, DDI_PROP_HW_DEF));
159 }
160
161 void
162 ndi_prop_remove_all(dev_info_t *dip)
163 {
164 i_ddi_prop_dyn_parent_set(dip, NULL);
165 ddi_prop_remove_all_common(dip, (int)DDI_PROP_HW_DEF);
166 }
167
168 /*
169 * Post an event notification to nexus driver responsible for handling
170 * the event. The responsible nexus is defined in the cookie passed in as
171 * the third parameter.
172 * The dip parameter is an artifact of an older implementation in which all
173 * requests to remove an eventcall would bubble up the tree. Today, this
174 * parameter is ignored.
175 * Input Parameters:
176 * dip - Ignored.
177 * rdip - device driver posting the event
178 * cookie - valid ddi_eventcookie_t, obtained by caller prior to
179 * invocation of this routine
180 * impl_data - used by framework
181 */
182 /*ARGSUSED*/
183 int
184 ndi_post_event(dev_info_t *dip, dev_info_t *rdip,
185 ddi_eventcookie_t cookie, void *impl_data)
186 {
187 dev_info_t *ddip;
188
189 ASSERT(cookie);
190 ddip = NDI_EVENT_DDIP(cookie);
191
192 /*
193 * perform sanity checks. These conditions should never be true.
194 */
195
196 ASSERT(DEVI(ddip)->devi_ops->devo_bus_ops != NULL);
197 ASSERT(DEVI(ddip)->devi_ops->devo_bus_ops->busops_rev >= BUSO_REV_6);
198 ASSERT(DEVI(ddip)->devi_ops->devo_bus_ops->bus_post_event != NULL);
199
200 /*
201 * post the event to the responsible ancestor
202 */
203 return ((*(DEVI(ddip)->devi_ops->devo_bus_ops->bus_post_event))
204 (ddip, rdip, cookie, impl_data));
205 }
206
207 /*
208 * Calls the bus nexus driver's implementation of the
209 * (*bus_remove_eventcall)() interface.
210 */
211 int
212 ndi_busop_remove_eventcall(dev_info_t *ddip, ddi_callback_id_t id)
213 {
214
215 ASSERT(id);
216 /* check for a correct revno before calling up the device tree. */
217 ASSERT(DEVI(ddip)->devi_ops->devo_bus_ops != NULL);
218 ASSERT(DEVI(ddip)->devi_ops->devo_bus_ops->busops_rev >= BUSO_REV_6);
219
220 if (DEVI(ddip)->devi_ops->devo_bus_ops->bus_remove_eventcall == NULL)
221 return (DDI_FAILURE);
222
223 /*
224 * request responsible nexus to remove the eventcall
225 */
226 return ((*(DEVI(ddip)->devi_ops->devo_bus_ops->bus_remove_eventcall))
227 (ddip, id));
228 }
229
230 /*
231 * Calls the bus nexus driver's implementation of the
232 * (*bus_add_eventcall)() interface. The dip parameter is an
233 * artifact of an older implementation in which all requests to
234 * add an eventcall would bubble up the tree. Today, this parameter is
235 * ignored.
236 */
237 /*ARGSUSED*/
238 int
239 ndi_busop_add_eventcall(dev_info_t *dip, dev_info_t *rdip,
240 ddi_eventcookie_t cookie, void (*callback)(), void *arg,
241 ddi_callback_id_t *cb_id)
242 {
243 dev_info_t *ddip = (dev_info_t *)NDI_EVENT_DDIP(cookie);
244
245 /*
246 * check for a correct revno before calling up the device tree.
247 */
248 ASSERT(DEVI(ddip)->devi_ops->devo_bus_ops != NULL);
249 ASSERT(DEVI(ddip)->devi_ops->devo_bus_ops->busops_rev >= BUSO_REV_6);
250
251 if (DEVI(ddip)->devi_ops->devo_bus_ops->bus_add_eventcall == NULL)
252 return (DDI_FAILURE);
253
254 /*
255 * request responsible ancestor to add the eventcall
256 */
257 return ((*(DEVI(ddip)->devi_ops->devo_bus_ops->bus_add_eventcall))
258 (ddip, rdip, cookie, callback, arg, cb_id));
259 }
260
261 /*
262 * Calls the bus nexus driver's implementation of the
263 * (*bus_get_eventcookie)() interface up the device tree hierarchy.
264 */
265 int
266 ndi_busop_get_eventcookie(dev_info_t *dip, dev_info_t *rdip, char *name,
267 ddi_eventcookie_t *event_cookiep)
268 {
269 dev_info_t *pdip = (dev_info_t *)DEVI(dip)->devi_parent;
270
271 /* Can not be called from rootnex. */
272 ASSERT(pdip);
273
274 /*
275 * check for a correct revno before calling up the device tree.
276 */
277 ASSERT(DEVI(pdip)->devi_ops->devo_bus_ops != NULL);
278
279 if ((DEVI(pdip)->devi_ops->devo_bus_ops->busops_rev < BUSO_REV_6) ||
280 (DEVI(pdip)->devi_ops->devo_bus_ops->bus_get_eventcookie == NULL)) {
281 #ifdef DEBUG
282 if ((DEVI(pdip)->devi_ops->devo_bus_ops->busops_rev >=
283 BUSO_REV_3) &&
284 (DEVI(pdip)->devi_ops->devo_bus_ops->bus_get_eventcookie)) {
285 cmn_err(CE_WARN,
286 "Warning: %s%d busops_rev=%d no longer supported"
287 " by the NDI event framework.\nBUSO_REV_6 or "
288 "greater must be used.",
289 DEVI(pdip)->devi_binding_name,
290 DEVI(pdip)->devi_instance,
291 DEVI(pdip)->devi_ops->devo_bus_ops->busops_rev);
292 }
293 #endif /* DEBUG */
294
295 return (ndi_busop_get_eventcookie(pdip, rdip, name,
296 event_cookiep));
297 }
298
299 return ((*(DEVI(pdip)->devi_ops->devo_bus_ops->bus_get_eventcookie))
300 (pdip, rdip, name, event_cookiep));
301 }
302
303 /*
304 * Copy in the devctl IOCTL data and return a handle to
305 * the data.
306 */
307 int
308 ndi_dc_allochdl(void *iocarg, struct devctl_iocdata **rdcp)
309 {
310 struct devctl_iocdata *dcp;
311 char *cpybuf;
312
313 ASSERT(rdcp != NULL);
314
315 dcp = kmem_zalloc(sizeof (*dcp), KM_SLEEP);
316
317 if (get_udatamodel() == DATAMODEL_NATIVE) {
318 if (copyin(iocarg, dcp, sizeof (*dcp)) != 0) {
319 kmem_free(dcp, sizeof (*dcp));
320 return (NDI_FAULT);
321 }
322 }
323 #ifdef _SYSCALL32_IMPL
324 else {
325 struct devctl_iocdata32 dcp32;
326
327 if (copyin(iocarg, &dcp32, sizeof (dcp32)) != 0) {
328 kmem_free(dcp, sizeof (*dcp));
329 return (NDI_FAULT);
330 }
331 dcp->cmd = (uint_t)dcp32.cmd;
332 dcp->flags = (uint_t)dcp32.flags;
333 dcp->cpyout_buf = (uint_t *)(uintptr_t)dcp32.cpyout_buf;
334 dcp->nvl_user = (nvlist_t *)(uintptr_t)dcp32.nvl_user;
335 dcp->nvl_usersz = (size_t)dcp32.nvl_usersz;
336 dcp->c_nodename = (char *)(uintptr_t)dcp32.c_nodename;
337 dcp->c_unitaddr = (char *)(uintptr_t)dcp32.c_unitaddr;
338 }
339 #endif
340 if (dcp->c_nodename != NULL) {
341 cpybuf = kmem_alloc(MAXNAMELEN, KM_SLEEP);
342 if (copyinstr(dcp->c_nodename, cpybuf, MAXNAMELEN, 0) != 0) {
343 kmem_free(cpybuf, MAXNAMELEN);
344 kmem_free(dcp, sizeof (*dcp));
345 return (NDI_FAULT);
346 }
347 cpybuf[MAXNAMELEN - 1] = '\0';
348 dcp->c_nodename = cpybuf;
349 }
350
351 if (dcp->c_unitaddr != NULL) {
352 cpybuf = kmem_alloc(MAXNAMELEN, KM_SLEEP);
353 if (copyinstr(dcp->c_unitaddr, cpybuf, MAXNAMELEN, 0) != 0) {
354 kmem_free(cpybuf, MAXNAMELEN);
355 if (dcp->c_nodename != NULL)
356 kmem_free(dcp->c_nodename, MAXNAMELEN);
357 kmem_free(dcp, sizeof (*dcp));
358 return (NDI_FAULT);
359 }
360 cpybuf[MAXNAMELEN - 1] = '\0';
361 dcp->c_unitaddr = cpybuf;
362 }
363
364 /*
365 * copyin and unpack a user defined nvlist if one was passed
366 */
367 if (dcp->nvl_user != NULL) {
368 if ((dcp->nvl_usersz == 0) ||
369 (dcp->nvl_usersz > DEVCTL_MAX_NVL_USERSZ)) {
370 if (dcp->c_nodename != NULL)
371 kmem_free(dcp->c_nodename, MAXNAMELEN);
372 if (dcp->c_unitaddr != NULL)
373 kmem_free(dcp->c_unitaddr, MAXNAMELEN);
374 kmem_free(dcp, sizeof (*dcp));
375 return (NDI_FAILURE);
376 }
377 cpybuf = kmem_alloc(dcp->nvl_usersz, KM_SLEEP);
378 if (copyin(dcp->nvl_user, cpybuf, dcp->nvl_usersz) != 0) {
379 kmem_free(cpybuf, dcp->nvl_usersz);
380 if (dcp->c_nodename != NULL)
381 kmem_free(dcp->c_nodename, MAXNAMELEN);
382 if (dcp->c_unitaddr != NULL)
383 kmem_free(dcp->c_unitaddr, MAXNAMELEN);
384 kmem_free(dcp, sizeof (*dcp));
385 return (NDI_FAULT);
386 }
387
388 if (nvlist_unpack(cpybuf, dcp->nvl_usersz, &dcp->nvl_user,
389 KM_SLEEP)) {
390 kmem_free(cpybuf, dcp->nvl_usersz);
391 if (dcp->c_nodename != NULL)
392 kmem_free(dcp->c_nodename, MAXNAMELEN);
393 if (dcp->c_unitaddr != NULL)
394 kmem_free(dcp->c_unitaddr, MAXNAMELEN);
395 kmem_free(dcp, sizeof (*dcp));
396 return (NDI_FAULT);
397 }
398 /*
399 * free the buffer containing the packed nvlist
400 */
401 kmem_free(cpybuf, dcp->nvl_usersz);
402
403 }
404
405 *rdcp = dcp;
406 return (NDI_SUCCESS);
407 }
408
409 /*
410 * free all space allocated to a handle.
411 */
412 void
413 ndi_dc_freehdl(struct devctl_iocdata *dcp)
414 {
415 ASSERT(dcp != NULL);
416
417 if (dcp->c_nodename != NULL)
418 kmem_free(dcp->c_nodename, MAXNAMELEN);
419
420 if (dcp->c_unitaddr != NULL)
421 kmem_free(dcp->c_unitaddr, MAXNAMELEN);
422
423 nvlist_free(dcp->nvl_user);
424
425 kmem_free(dcp, sizeof (*dcp));
426 }
427
428 char *
429 ndi_dc_getname(struct devctl_iocdata *dcp)
430 {
431 ASSERT(dcp != NULL);
432 return (dcp->c_nodename);
433
434 }
435
436 char *
437 ndi_dc_getaddr(struct devctl_iocdata *dcp)
438 {
439 ASSERT(dcp != NULL);
440 return (dcp->c_unitaddr);
441 }
442
443 nvlist_t *
444 ndi_dc_get_ap_data(struct devctl_iocdata *dcp)
445 {
446 ASSERT(dcp != NULL);
447
448 return (dcp->nvl_user);
449 }
450
451 /*
452 * Transition the child named by "devname@devaddr" to the online state.
453 * For use by a driver's DEVCTL_DEVICE_ONLINE handler.
454 */
455 int
456 ndi_devctl_device_online(dev_info_t *dip, struct devctl_iocdata *dcp,
457 uint_t flags)
458 {
459 int rval;
460 char *name;
461 dev_info_t *rdip;
462
463 if (ndi_dc_getname(dcp) == NULL || ndi_dc_getaddr(dcp) == NULL)
464 return (EINVAL);
465
466 name = kmem_alloc(MAXNAMELEN, KM_SLEEP);
467 (void) snprintf(name, MAXNAMELEN, "%s@%s",
468 ndi_dc_getname(dcp), ndi_dc_getaddr(dcp));
469
470 if ((rval = ndi_devi_config_one(dip, name, &rdip,
471 flags | NDI_DEVI_ONLINE | NDI_CONFIG)) == NDI_SUCCESS) {
472 ndi_rele_devi(rdip);
473
474 /*
475 * Invalidate devfs cached directory contents. For the checks
476 * in the "if" condition see the comment in ndi_devi_online().
477 */
478 if (i_ddi_devi_attached(dip) && !DEVI_BUSY_OWNED(dip))
479 (void) devfs_clean(dip, NULL, 0);
480
481 } else if (rval == NDI_BUSY) {
482 rval = EBUSY;
483 } else if (rval == NDI_FAILURE) {
484 rval = EIO;
485 }
486
487 NDI_DEBUG(flags, (CE_CONT, "%s%d: online: %s: %s\n",
488 ddi_driver_name(dip), ddi_get_instance(dip), name,
489 ((rval == NDI_SUCCESS) ? "ok" : "failed")));
490
491 kmem_free(name, MAXNAMELEN);
492
493 return (rval);
494 }
495
496 /*
497 * Transition the child named by "devname@devaddr" to the offline state.
498 * For use by a driver's DEVCTL_DEVICE_OFFLINE handler.
499 */
500 int
501 ndi_devctl_device_offline(dev_info_t *dip, struct devctl_iocdata *dcp,
502 uint_t flags)
503 {
504 int rval;
505 char *name;
506
507 if (ndi_dc_getname(dcp) == NULL || ndi_dc_getaddr(dcp) == NULL)
508 return (EINVAL);
509
510 name = kmem_alloc(MAXNAMELEN, KM_SLEEP);
511 (void) snprintf(name, MAXNAMELEN, "%s@%s",
512 ndi_dc_getname(dcp), ndi_dc_getaddr(dcp));
513
514 (void) devfs_clean(dip, name, DV_CLEAN_FORCE);
515 rval = ndi_devi_unconfig_one(dip, name, NULL,
516 flags | NDI_DEVI_OFFLINE);
517
518 if (rval == NDI_BUSY) {
519 rval = EBUSY;
520 } else if (rval == NDI_FAILURE) {
521 rval = EIO;
522 }
523
524 NDI_DEBUG(flags, (CE_CONT, "%s%d: offline: %s: %s\n",
525 ddi_driver_name(dip), ddi_get_instance(dip), name,
526 (rval == NDI_SUCCESS) ? "ok" : "failed"));
527
528 kmem_free(name, MAXNAMELEN);
529
530 return (rval);
531 }
532
533 /*
534 * Remove the child named by "devname@devaddr".
535 * For use by a driver's DEVCTL_DEVICE_REMOVE handler.
536 */
537 int
538 ndi_devctl_device_remove(dev_info_t *dip, struct devctl_iocdata *dcp,
539 uint_t flags)
540 {
541 int rval;
542 char *name;
543
544 if (ndi_dc_getname(dcp) == NULL || ndi_dc_getaddr(dcp) == NULL)
545 return (EINVAL);
546
547 name = kmem_alloc(MAXNAMELEN, KM_SLEEP);
548 (void) snprintf(name, MAXNAMELEN, "%s@%s",
549 ndi_dc_getname(dcp), ndi_dc_getaddr(dcp));
550
551 (void) devfs_clean(dip, name, DV_CLEAN_FORCE);
552
553 rval = ndi_devi_unconfig_one(dip, name, NULL, flags | NDI_DEVI_REMOVE);
554
555 if (rval == NDI_BUSY) {
556 rval = EBUSY;
557 } else if (rval == NDI_FAILURE) {
558 rval = EIO;
559 }
560
561 NDI_DEBUG(flags, (CE_CONT, "%s%d: remove: %s: %s\n",
562 ddi_driver_name(dip), ddi_get_instance(dip), name,
563 (rval == NDI_SUCCESS) ? "ok" : "failed"));
564
565 kmem_free(name, MAXNAMELEN);
566
567 return (rval);
568 }
569
570 /*
571 * Return devctl state of the child named by "name@addr".
572 * For use by a driver's DEVCTL_DEVICE_GETSTATE handler.
573 */
574 int
575 ndi_devctl_device_getstate(dev_info_t *parent, struct devctl_iocdata *dcp,
576 uint_t *state)
577 {
578 dev_info_t *dip;
579 char *name, *addr;
580 char *devname;
581 int devnamelen;
582 int circ;
583
584 if (parent == NULL ||
585 ((name = ndi_dc_getname(dcp)) == NULL) ||
586 ((addr = ndi_dc_getaddr(dcp)) == NULL))
587 return (NDI_FAILURE);
588
589 devnamelen = strlen(name) + strlen(addr) + 2;
590 devname = kmem_alloc(devnamelen, KM_SLEEP);
591 if (strlen(addr) > 0) {
592 (void) snprintf(devname, devnamelen, "%s@%s", name, addr);
593 } else {
594 (void) snprintf(devname, devnamelen, "%s", name);
595 }
596
597 ndi_devi_enter(parent, &circ);
598
599 dip = ndi_devi_findchild(parent, devname);
600 kmem_free(devname, devnamelen);
601
602 if (dip == NULL) {
603 ndi_devi_exit(parent, circ);
604 return (NDI_FAILURE);
605 }
606
607 mutex_enter(&(DEVI(dip)->devi_lock));
608 if (DEVI_IS_DEVICE_OFFLINE(dip)) {
609 *state = DEVICE_OFFLINE;
610 } else if (DEVI_IS_DEVICE_DOWN(dip)) {
611 *state = DEVICE_DOWN;
612 } else {
613 *state = DEVICE_ONLINE;
614 if (devi_stillreferenced(dip) == DEVI_REFERENCED)
615 *state |= DEVICE_BUSY;
616 }
617
618 mutex_exit(&(DEVI(dip)->devi_lock));
619 ndi_devi_exit(parent, circ);
620
621 return (NDI_SUCCESS);
622 }
623
624 /*
625 * return the current state of the device "dip"
626 *
627 * recommend using ndi_devctl_ioctl() or
628 * ndi_devctl_device_getstate() instead
629 */
630 int
631 ndi_dc_return_dev_state(dev_info_t *dip, struct devctl_iocdata *dcp)
632 {
633 dev_info_t *pdip;
634 uint_t devstate = 0;
635 int circ;
636
637 if ((dip == NULL) || (dcp == NULL))
638 return (NDI_FAILURE);
639
640 pdip = ddi_get_parent(dip);
641
642 ndi_devi_enter(pdip, &circ);
643 mutex_enter(&(DEVI(dip)->devi_lock));
644 if (DEVI_IS_DEVICE_OFFLINE(dip)) {
645 devstate = DEVICE_OFFLINE;
646 } else if (DEVI_IS_DEVICE_DOWN(dip)) {
647 devstate = DEVICE_DOWN;
648 } else {
649 devstate = DEVICE_ONLINE;
650 if (devi_stillreferenced(dip) == DEVI_REFERENCED)
651 devstate |= DEVICE_BUSY;
652 }
653
654 mutex_exit(&(DEVI(dip)->devi_lock));
655 ndi_devi_exit(pdip, circ);
656
657 if (copyout(&devstate, dcp->cpyout_buf, sizeof (uint_t)) != 0)
658 return (NDI_FAULT);
659
660 return (NDI_SUCCESS);
661 }
662
663 /*
664 * Return device's bus state
665 * For use by a driver's DEVCTL_BUS_GETSTATE handler.
666 */
667 int
668 ndi_devctl_bus_getstate(dev_info_t *dip, struct devctl_iocdata *dcp,
669 uint_t *state)
670 {
671 if ((dip == NULL) || (dcp == NULL))
672 return (NDI_FAILURE);
673
674 return (ndi_get_bus_state(dip, state));
675 }
676
677 /*
678 * Generic devctl ioctl handler
679 */
680 int
681 ndi_devctl_ioctl(dev_info_t *dip, int cmd, intptr_t arg, int mode, uint_t flags)
682 {
683 _NOTE(ARGUNUSED(mode))
684 struct devctl_iocdata *dcp;
685 uint_t state;
686 int rval = ENOTTY;
687
688 /*
689 * read devctl ioctl data
690 */
691 if (ndi_dc_allochdl((void *)arg, &dcp) != NDI_SUCCESS)
692 return (EFAULT);
693
694 switch (cmd) {
695
696 case DEVCTL_BUS_GETSTATE:
697 rval = ndi_devctl_bus_getstate(dip, dcp, &state);
698 if (rval == NDI_SUCCESS) {
699 if (copyout(&state, dcp->cpyout_buf,
700 sizeof (uint_t)) != 0)
701 rval = NDI_FAULT;
702 }
703 break;
704
705 case DEVCTL_DEVICE_ONLINE:
706 rval = ndi_devctl_device_online(dip, dcp, flags);
707 break;
708
709 case DEVCTL_DEVICE_OFFLINE:
710 rval = ndi_devctl_device_offline(dip, dcp, flags);
711 break;
712
713 case DEVCTL_DEVICE_GETSTATE:
714 rval = ndi_devctl_device_getstate(dip, dcp, &state);
715 if (rval == NDI_SUCCESS) {
716 if (copyout(&state, dcp->cpyout_buf,
717 sizeof (uint_t)) != 0)
718 rval = NDI_FAULT;
719 }
720 break;
721
722 case DEVCTL_DEVICE_REMOVE:
723 rval = ndi_devctl_device_remove(dip, dcp, flags);
724 break;
725
726 case DEVCTL_BUS_DEV_CREATE:
727 rval = ndi_dc_devi_create(dcp, dip, 0, NULL);
728 break;
729
730 /*
731 * ioctls for which a generic implementation makes no sense
732 */
733 case DEVCTL_BUS_RESET:
734 case DEVCTL_BUS_RESETALL:
735 case DEVCTL_DEVICE_RESET:
736 case DEVCTL_AP_CONNECT:
737 case DEVCTL_AP_DISCONNECT:
738 case DEVCTL_AP_INSERT:
739 case DEVCTL_AP_REMOVE:
740 case DEVCTL_AP_CONFIGURE:
741 case DEVCTL_AP_UNCONFIGURE:
742 case DEVCTL_AP_GETSTATE:
743 case DEVCTL_AP_CONTROL:
744 case DEVCTL_BUS_QUIESCE:
745 case DEVCTL_BUS_UNQUIESCE:
746 rval = ENOTSUP;
747 break;
748 }
749
750 ndi_dc_freehdl(dcp);
751 return (rval);
752 }
753
754 /*
755 * Copyout the state of the Attachment Point "ap" to the requesting
756 * user process.
757 */
758 int
759 ndi_dc_return_ap_state(devctl_ap_state_t *ap, struct devctl_iocdata *dcp)
760 {
761 if ((ap == NULL) || (dcp == NULL))
762 return (NDI_FAILURE);
763
764
765 if (get_udatamodel() == DATAMODEL_NATIVE) {
766 if (copyout(ap, dcp->cpyout_buf,
767 sizeof (devctl_ap_state_t)) != 0)
768 return (NDI_FAULT);
769 }
770 #ifdef _SYSCALL32_IMPL
771 else {
772 struct devctl_ap_state32 ap_state32;
773
774 ap_state32.ap_rstate = ap->ap_rstate;
775 ap_state32.ap_ostate = ap->ap_ostate;
776 ap_state32.ap_condition = ap->ap_condition;
777 ap_state32.ap_error_code = ap->ap_error_code;
778 ap_state32.ap_in_transition = ap->ap_in_transition;
779 ap_state32.ap_last_change = (time32_t)ap->ap_last_change;
780 if (copyout(&ap_state32, dcp->cpyout_buf,
781 sizeof (devctl_ap_state32_t)) != 0)
782 return (NDI_FAULT);
783 }
784 #endif
785
786 return (NDI_SUCCESS);
787 }
788
789 /*
790 * Copyout the bus state of the bus nexus device "dip" to the requesting
791 * user process.
792 */
793 int
794 ndi_dc_return_bus_state(dev_info_t *dip, struct devctl_iocdata *dcp)
795 {
796 uint_t devstate = 0;
797
798 if ((dip == NULL) || (dcp == NULL))
799 return (NDI_FAILURE);
800
801 if (ndi_get_bus_state(dip, &devstate) != NDI_SUCCESS)
802 return (NDI_FAILURE);
803
804 if (copyout(&devstate, dcp->cpyout_buf, sizeof (uint_t)) != 0)
805 return (NDI_FAULT);
806
807 return (NDI_SUCCESS);
808 }
809
810 static int
811 i_dc_devi_create(struct devctl_iocdata *, dev_info_t *, dev_info_t **);
812
813 /*
814 * create a child device node given the property definitions
815 * supplied by the userland process
816 */
817 int
818 ndi_dc_devi_create(struct devctl_iocdata *dcp, dev_info_t *pdip, int flags,
819 dev_info_t **rdip)
820 {
821 dev_info_t *cdip;
822 int rv, circular = 0;
823 char devnm[MAXNAMELEN];
824 int nmlen;
825
826 /*
827 * The child device may have been pre-constructed by an earlier
828 * call to this function with the flag DEVCTL_CONSTRUCT set.
829 */
830
831 if ((cdip = (rdip != NULL) ? *rdip : NULL) == NULL)
832 if ((rv = i_dc_devi_create(dcp, pdip, &cdip)) != 0)
833 return (rv);
834
835 ASSERT(cdip != NULL);
836
837 /*
838 * Return the device node partially constructed if the
839 * DEVCTL_CONSTRUCT flag is set.
840 */
841 if (flags & DEVCTL_CONSTRUCT) {
842 if (rdip == NULL) {
843 (void) ndi_devi_free(cdip);
844 return (EINVAL);
845 }
846 *rdip = cdip;
847 return (0);
848 }
849
850 /*
851 * Bring the node up to a named but OFFLINE state. The calling
852 * application will need to manage the node from here on.
853 */
854 if (dcp->flags & DEVCTL_OFFLINE) {
855 /*
856 * In the unlikely event that the dip was somehow attached by
857 * the userland process (and device contracts or LDI opens
858 * were registered against the dip) after it was created by
859 * a previous DEVCTL_CONSTRUCT call, we start notify
860 * proceedings on this dip. Note that we don't need to
861 * return the dip after a failure of the notify since
862 * for a contract or LDI handle to be created the dip was
863 * already available to the user.
864 */
865 if (e_ddi_offline_notify(cdip) == DDI_FAILURE) {
866 return (EBUSY);
867 }
868
869 /*
870 * hand set the OFFLINE flag to prevent any asynchronous
871 * autoconfiguration operations from attaching this node.
872 */
873 mutex_enter(&(DEVI(cdip)->devi_lock));
874 DEVI_SET_DEVICE_OFFLINE(cdip);
875 mutex_exit(&(DEVI(cdip)->devi_lock));
876
877 e_ddi_offline_finalize(cdip, DDI_SUCCESS);
878
879 rv = ndi_devi_bind_driver(cdip, flags);
880 if (rv != NDI_SUCCESS) {
881 (void) ndi_devi_offline(cdip, NDI_DEVI_REMOVE);
882 return (ENXIO);
883 }
884
885 /*
886 * remove the dev_info node if it failed to bind to a
887 * driver above.
888 */
889 if (i_ddi_node_state(cdip) < DS_BOUND) {
890 (void) ndi_devi_offline(cdip, NDI_DEVI_REMOVE);
891 return (ENXIO);
892 }
893
894 /*
895 * add the node to the per-driver list and INITCHILD it
896 * to give it a name.
897 */
898 ndi_devi_enter(pdip, &circular);
899 if ((rv = ddi_initchild(pdip, cdip)) != DDI_SUCCESS) {
900 (void) ndi_devi_offline(cdip, NDI_DEVI_REMOVE);
901 ndi_devi_exit(pdip, circular);
902 return (EINVAL);
903 }
904 ndi_devi_exit(pdip, circular);
905
906 } else {
907 /*
908 * Attempt to bring the device ONLINE. If the request to
909 * fails, remove the dev_info node.
910 */
911 if (ndi_devi_online(cdip, NDI_ONLINE_ATTACH) != NDI_SUCCESS) {
912 (void) ndi_devi_offline(cdip, NDI_DEVI_REMOVE);
913 return (ENXIO);
914 }
915
916 /*
917 * if the node was successfully added but there was
918 * no driver available for the device, remove the node
919 */
920 if (i_ddi_node_state(cdip) < DS_BOUND) {
921 (void) ndi_devi_offline(cdip, NDI_DEVI_REMOVE);
922 return (ENODEV);
923 }
924 }
925
926 /*
927 * return a handle to the child device
928 * copy out the name of the newly attached child device if
929 * the IOCTL request has provided a copyout buffer.
930 */
931 if (rdip != NULL)
932 *rdip = cdip;
933
934 if (dcp->cpyout_buf == NULL)
935 return (0);
936
937 ASSERT(ddi_node_name(cdip) != NULL);
938 ASSERT(ddi_get_name_addr(cdip) != NULL);
939
940 nmlen = snprintf(devnm, MAXNAMELEN, "%s@%s",
941 ddi_node_name(cdip), ddi_get_name_addr(cdip));
942
943 if (copyout(&devnm, dcp->cpyout_buf, nmlen) != 0) {
944 (void) ndi_devi_offline(cdip, NDI_DEVI_REMOVE);
945 return (EFAULT);
946 }
947 return (0);
948 }
949
950 static int
951 i_dc_devi_create(struct devctl_iocdata *dcp, dev_info_t *pdip,
952 dev_info_t **rdip)
953 {
954
955 dev_info_t *cdip;
956 char *cname = NULL;
957 nvlist_t *nvlp = dcp->nvl_user;
958 nvpair_t *npp;
959 char *np;
960 int rv = 0;
961
962 ASSERT(rdip != NULL && *rdip == NULL);
963
964 if ((nvlp == NULL) ||
965 (nvlist_lookup_string(nvlp, DC_DEVI_NODENAME, &cname) != 0))
966 return (EINVAL);
967
968 /*
969 * construct a new dev_info node with a user-provided nodename
970 */
971 ndi_devi_alloc_sleep(pdip, cname, (pnode_t)DEVI_SID_NODEID, &cdip);
972
973 /*
974 * create hardware properties for each member in the property
975 * list.
976 */
977 for (npp = nvlist_next_nvpair(nvlp, NULL); (npp != NULL && !rv);
978 npp = nvlist_next_nvpair(nvlp, npp)) {
979
980 np = nvpair_name(npp);
981
982 /*
983 * skip the nodename property
984 */
985 if (strcmp(np, DC_DEVI_NODENAME) == 0)
986 continue;
987
988 switch (nvpair_type(npp)) {
989
990 case DATA_TYPE_INT32: {
991 int32_t prop_val;
992
993 if ((rv = nvpair_value_int32(npp, &prop_val)) != 0)
994 break;
995
996 (void) ndi_prop_update_int(DDI_DEV_T_NONE, cdip, np,
997 (int)prop_val);
998 break;
999 }
1000
1001 case DATA_TYPE_STRING: {
1002 char *prop_val;
1003
1004 if ((rv = nvpair_value_string(npp, &prop_val)) != 0)
1005 break;
1006
1007 (void) ndi_prop_update_string(DDI_DEV_T_NONE, cdip,
1008 np, prop_val);
1009 break;
1010 }
1011
1012 case DATA_TYPE_BYTE_ARRAY: {
1013 uchar_t *val;
1014 uint_t nelms;
1015
1016 if ((rv = nvpair_value_byte_array(npp, &val,
1017 &nelms)) != 0)
1018 break;
1019
1020 (void) ndi_prop_update_byte_array(DDI_DEV_T_NONE,
1021 cdip, np, (uchar_t *)val, nelms);
1022 break;
1023 }
1024
1025 case DATA_TYPE_INT32_ARRAY: {
1026 int32_t *val;
1027 uint_t nelms;
1028
1029 if ((rv = nvpair_value_int32_array(npp, &val,
1030 &nelms)) != 0)
1031 break;
1032
1033 (void) ndi_prop_update_int_array(DDI_DEV_T_NONE,
1034 cdip, np, val, nelms);
1035 break;
1036 }
1037
1038 case DATA_TYPE_STRING_ARRAY: {
1039 char **val;
1040 uint_t nelms;
1041
1042 if ((rv = nvpair_value_string_array(npp, &val,
1043 &nelms)) != 0)
1044 break;
1045
1046 (void) ndi_prop_update_string_array(DDI_DEV_T_NONE,
1047 cdip, np, val, nelms);
1048 break;
1049 }
1050
1051 /*
1052 * unsupported property data type
1053 */
1054 default:
1055 rv = EINVAL;
1056 }
1057 }
1058
1059 /*
1060 * something above failed
1061 * destroy the partially child device and abort the request
1062 */
1063 if (rv != 0) {
1064 (void) ndi_devi_free(cdip);
1065 return (rv);
1066 }
1067
1068 *rdip = cdip;
1069 return (0);
1070 }
1071
1072 /*
1073 * return current soft bus state of bus nexus "dip"
1074 */
1075 int
1076 ndi_get_bus_state(dev_info_t *dip, uint_t *rstate)
1077 {
1078 if (dip == NULL || rstate == NULL)
1079 return (NDI_FAILURE);
1080
1081 if (DEVI(dip)->devi_ops->devo_bus_ops == NULL)
1082 return (NDI_FAILURE);
1083
1084 mutex_enter(&(DEVI(dip)->devi_lock));
1085 if (DEVI_IS_BUS_QUIESCED(dip))
1086 *rstate = BUS_QUIESCED;
1087 else if (DEVI_IS_BUS_DOWN(dip))
1088 *rstate = BUS_SHUTDOWN;
1089 else
1090 *rstate = BUS_ACTIVE;
1091 mutex_exit(&(DEVI(dip)->devi_lock));
1092 return (NDI_SUCCESS);
1093 }
1094
1095 /*
1096 * Set the soft state of bus nexus "dip"
1097 */
1098 int
1099 ndi_set_bus_state(dev_info_t *dip, uint_t state)
1100 {
1101 int rv = NDI_SUCCESS;
1102
1103 if (dip == NULL)
1104 return (NDI_FAILURE);
1105
1106 mutex_enter(&(DEVI(dip)->devi_lock));
1107
1108 switch (state) {
1109 case BUS_QUIESCED:
1110 DEVI_SET_BUS_QUIESCE(dip);
1111 break;
1112
1113 case BUS_ACTIVE:
1114 DEVI_SET_BUS_ACTIVE(dip);
1115 DEVI_SET_BUS_UP(dip);
1116 break;
1117
1118 case BUS_SHUTDOWN:
1119 DEVI_SET_BUS_DOWN(dip);
1120 break;
1121
1122 default:
1123 rv = NDI_FAILURE;
1124 }
1125
1126 mutex_exit(&(DEVI(dip)->devi_lock));
1127 return (rv);
1128 }
1129
1130 /*
1131 * These dummy functions are obsolete and may be removed.
1132 * Retained for existing driver compatibility only.
1133 * Drivers should be fixed not to use these functions.
1134 * Don't write new code using these obsolete interfaces.
1135 */
1136 /*ARGSUSED*/
1137 void
1138 i_ndi_block_device_tree_changes(uint_t *lkcnt) /* obsolete */
1139 {
1140 /* obsolete dummy function */
1141 }
1142
1143 /*ARGSUSED*/
1144 void
1145 i_ndi_allow_device_tree_changes(uint_t lkcnt) /* obsolete */
1146 {
1147 /* obsolete dummy function */
1148 }
1149
1150 /*
1151 * Single thread entry into per-driver list
1152 */
1153 /*ARGSUSED*/
1154 void
1155 e_ddi_enter_driver_list(struct devnames *dnp, int *listcnt) /* obsolete */
1156 {
1157 /* obsolete dummy function */
1158 }
1159
1160 /*
1161 * release the per-driver list
1162 */
1163 /*ARGSUSED*/
1164 void
1165 e_ddi_exit_driver_list(struct devnames *dnp, int listcnt) /* obsolete */
1166 {
1167 /* obsolete dummy function */
1168 }
1169
1170 /*
1171 * Attempt to enter driver list
1172 */
1173 /*ARGSUSED*/
1174 int
1175 e_ddi_tryenter_driver_list(struct devnames *dnp, int *listcnt) /* obsolete */
1176 {
1177 return (1); /* obsolete dummy function */
1178 }
1179
1180 /*
1181 * ndi event handling support functions:
1182 * The NDI event support model is as follows:
1183 *
1184 * The nexus driver defines a set of events using some static structures (so
1185 * these structures can be shared by all instances of the nexus driver).
1186 * The nexus driver allocates an event handle and binds the event set
1187 * to this handle. The nexus driver's event busop functions can just
1188 * call the appropriate NDI event support function using this handle
1189 * as the first argument.
1190 *
1191 * The reasoning for tying events to the device tree is that the entity
1192 * generating the callback will typically be one of the device driver's
1193 * ancestors in the tree.
1194 */
1195 static int ndi_event_debug = 0;
1196
1197 #ifdef DEBUG
1198 #define NDI_EVENT_DEBUG ndi_event_debug
1199 #endif /* DEBUG */
1200
1201 /*
1202 * allocate a new ndi event handle
1203 */
1204 int
1205 ndi_event_alloc_hdl(dev_info_t *dip, ddi_iblock_cookie_t cookie,
1206 ndi_event_hdl_t *handle, uint_t flag)
1207 {
1208 struct ndi_event_hdl *ndi_event_hdl;
1209
1210 ndi_event_hdl = kmem_zalloc(sizeof (struct ndi_event_hdl),
1211 ((flag & NDI_NOSLEEP) ? KM_NOSLEEP : KM_SLEEP));
1212
1213 if (!ndi_event_hdl) {
1214 return (NDI_FAILURE);
1215 }
1216
1217 ndi_event_hdl->ndi_evthdl_dip = dip;
1218 ndi_event_hdl->ndi_evthdl_iblock_cookie = cookie;
1219 mutex_init(&ndi_event_hdl->ndi_evthdl_mutex, NULL,
1220 MUTEX_DRIVER, (void *)cookie);
1221
1222 mutex_init(&ndi_event_hdl->ndi_evthdl_cb_mutex, NULL,
1223 MUTEX_DRIVER, (void *)cookie);
1224
1225 *handle = (ndi_event_hdl_t)ndi_event_hdl;
1226
1227 return (NDI_SUCCESS);
1228 }
1229
1230 /*
1231 * free the ndi event handle
1232 */
1233 int
1234 ndi_event_free_hdl(ndi_event_hdl_t handle)
1235 {
1236 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
1237 ndi_event_cookie_t *cookie;
1238 ndi_event_cookie_t *free;
1239
1240 ASSERT(handle);
1241
1242 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
1243 mutex_enter(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1244
1245 cookie = ndi_event_hdl->ndi_evthdl_cookie_list;
1246
1247 /* deallocate all defined cookies */
1248 while (cookie != NULL) {
1249 ASSERT(cookie->callback_list == NULL);
1250 free = cookie;
1251 cookie = cookie->next_cookie;
1252
1253 kmem_free(free, sizeof (ndi_event_cookie_t));
1254 }
1255
1256
1257 mutex_exit(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1258 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1259
1260 /* destroy mutexes */
1261 mutex_destroy(&ndi_event_hdl->ndi_evthdl_mutex);
1262 mutex_destroy(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1263
1264 /* free event handle */
1265 kmem_free(ndi_event_hdl, sizeof (struct ndi_event_hdl));
1266
1267 return (NDI_SUCCESS);
1268 }
1269
1270
1271 /*
1272 * ndi_event_bind_set() adds a set of events to the NDI event
1273 * handle.
1274 *
1275 * Events generated by high level interrupts should not
1276 * be mixed in the same event set with events generated by
1277 * normal interrupts or kernel events.
1278 *
1279 * This function can be called multiple times to bind
1280 * additional sets to the event handle.
1281 * However, events generated by high level interrupts cannot
1282 * be bound to a handle that already has bound events generated
1283 * by normal interrupts or from kernel context and vice versa.
1284 */
1285 int
1286 ndi_event_bind_set(ndi_event_hdl_t handle,
1287 ndi_event_set_t *ndi_events,
1288 uint_t flag)
1289 {
1290 struct ndi_event_hdl *ndi_event_hdl;
1291 ndi_event_cookie_t *next, *prev, *new_cookie;
1292 uint_t i, len;
1293 uint_t dup = 0;
1294 uint_t high_plevels, other_plevels;
1295 ndi_event_definition_t *ndi_event_defs;
1296
1297 int km_flag = ((flag & NDI_NOSLEEP) ? KM_NOSLEEP : KM_SLEEP);
1298
1299 ASSERT(handle);
1300 ASSERT(ndi_events);
1301
1302 /*
1303 * binding must be performed during attach/detach
1304 */
1305 if (!DEVI_IS_ATTACHING(handle->ndi_evthdl_dip) &&
1306 !DEVI_IS_DETACHING(handle->ndi_evthdl_dip)) {
1307 cmn_err(CE_WARN, "ndi_event_bind_set must be called within "
1308 "attach or detach");
1309 return (NDI_FAILURE);
1310 }
1311
1312 /*
1313 * if it is not the correct version or the event set is
1314 * empty, bail out
1315 */
1316 if (ndi_events->ndi_events_version != NDI_EVENTS_REV1)
1317 return (NDI_FAILURE);
1318
1319 ndi_event_hdl = (struct ndi_event_hdl *)handle;
1320 ndi_event_defs = ndi_events->ndi_event_defs;
1321 high_plevels = other_plevels = 0;
1322
1323 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
1324
1325 /* check for mixing events at high level with the other types */
1326 for (i = 0; i < ndi_events->ndi_n_events; i++) {
1327 if (ndi_event_defs[i].ndi_event_plevel == EPL_HIGHLEVEL) {
1328 high_plevels++;
1329 } else {
1330 other_plevels++;
1331 }
1332 }
1333
1334 /*
1335 * bail out if high level events are mixed with other types in this
1336 * event set or the set is incompatible with the set in the handle
1337 */
1338 if ((high_plevels && other_plevels) ||
1339 (other_plevels && ndi_event_hdl->ndi_evthdl_high_plevels) ||
1340 (high_plevels && ndi_event_hdl->ndi_evthdl_other_plevels)) {
1341 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1342
1343 return (NDI_FAILURE);
1344 }
1345
1346 /*
1347 * check for duplicate events in both the existing handle
1348 * and the event set, add events if not duplicates
1349 */
1350 next = ndi_event_hdl->ndi_evthdl_cookie_list;
1351 for (i = 0; i < ndi_events->ndi_n_events; i++) {
1352 while (next != NULL) {
1353 len = strlen(NDI_EVENT_NAME(next)) + 1;
1354 if (strncmp(NDI_EVENT_NAME(next),
1355 ndi_event_defs[i].ndi_event_name, len) == 0) {
1356 dup = 1;
1357 break;
1358 }
1359
1360 prev = next;
1361 next = next->next_cookie;
1362 }
1363
1364 if (dup == 0) {
1365 new_cookie = kmem_zalloc(sizeof (ndi_event_cookie_t),
1366 km_flag);
1367
1368 if (!new_cookie)
1369 return (NDI_FAILURE);
1370
1371 if (ndi_event_hdl->ndi_evthdl_n_events == 0) {
1372 ndi_event_hdl->ndi_evthdl_cookie_list =
1373 new_cookie;
1374 } else {
1375 prev->next_cookie = new_cookie;
1376 }
1377
1378 ndi_event_hdl->ndi_evthdl_n_events++;
1379
1380 /*
1381 * set up new cookie
1382 */
1383 new_cookie->definition = &ndi_event_defs[i];
1384 new_cookie->ddip = ndi_event_hdl->ndi_evthdl_dip;
1385
1386 } else {
1387 /*
1388 * event not added, must correct plevel numbers
1389 */
1390 if (ndi_event_defs[i].ndi_event_plevel ==
1391 EPL_HIGHLEVEL) {
1392 high_plevels--;
1393 } else {
1394 other_plevels--;
1395 }
1396 }
1397
1398 dup = 0;
1399 next = ndi_event_hdl->ndi_evthdl_cookie_list;
1400 prev = NULL;
1401
1402 }
1403
1404 ndi_event_hdl->ndi_evthdl_high_plevels += high_plevels;
1405 ndi_event_hdl->ndi_evthdl_other_plevels += other_plevels;
1406
1407 ASSERT((ndi_event_hdl->ndi_evthdl_high_plevels == 0) ||
1408 (ndi_event_hdl->ndi_evthdl_other_plevels == 0));
1409
1410 #ifdef NDI_EVENT_DEBUG
1411 if (ndi_event_debug) {
1412 ndi_event_dump_hdl(ndi_event_hdl, "ndi_event_bind_set");
1413 }
1414 #endif /* NDI_EVENT_DEBUG */
1415
1416 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1417
1418 return (NDI_SUCCESS);
1419 }
1420
1421 /*
1422 * ndi_event_unbind_set() unbinds a set of events, previously
1423 * bound using ndi_event_bind_set(), from the NDI event
1424 * handle.
1425 *
1426 * This routine will unbind all events in the event set. If an event,
1427 * specified in the event set, is not found in the handle, this
1428 * routine will proceed onto the next member of the set as if the event
1429 * was never specified.
1430 *
1431 * The event set may be a subset of the set of events that
1432 * was previously bound to the handle. For example, events
1433 * can be individually unbound.
1434 *
1435 * An event cannot be unbound if callbacks are still
1436 * registered against the event.
1437 */
1438 /*ARGSUSED*/
1439 int
1440 ndi_event_unbind_set(ndi_event_hdl_t handle, ndi_event_set_t *ndi_events,
1441 uint_t flag)
1442 {
1443 ndi_event_definition_t *ndi_event_defs;
1444 int len;
1445 uint_t i;
1446 int rval;
1447 ndi_event_cookie_t *cookie_list;
1448 ndi_event_cookie_t *prev = NULL;
1449
1450 ASSERT(ndi_events);
1451 ASSERT(handle);
1452
1453 /*
1454 * binding must be performed during attach/detac
1455 */
1456 if (!DEVI_IS_ATTACHING(handle->ndi_evthdl_dip) &&
1457 !DEVI_IS_DETACHING(handle->ndi_evthdl_dip)) {
1458 cmn_err(CE_WARN, "ndi_event_bind_set must be called within "
1459 "attach or detach");
1460 return (NDI_FAILURE);
1461 }
1462
1463 /* bail out if ndi_event_set is outdated */
1464 if (ndi_events->ndi_events_version != NDI_EVENTS_REV1) {
1465 return (NDI_FAILURE);
1466 }
1467
1468 ASSERT(ndi_events->ndi_event_defs);
1469
1470 ndi_event_defs = ndi_events->ndi_event_defs;
1471
1472 mutex_enter(&handle->ndi_evthdl_mutex);
1473 mutex_enter(&handle->ndi_evthdl_cb_mutex);
1474
1475 /*
1476 * Verify that all events in the event set are eligible
1477 * for unbinding(ie. there are no outstanding callbacks).
1478 * If any one of the events are ineligible, fail entire
1479 * operation.
1480 */
1481
1482 for (i = 0; i < ndi_events->ndi_n_events; i++) {
1483 cookie_list = handle->ndi_evthdl_cookie_list;
1484 while (cookie_list != NULL) {
1485 len = strlen(NDI_EVENT_NAME(cookie_list)) + 1;
1486 if (strncmp(NDI_EVENT_NAME(cookie_list),
1487 ndi_event_defs[i].ndi_event_name, len) == 0) {
1488
1489 ASSERT(cookie_list->callback_list == NULL);
1490 if (cookie_list->callback_list) {
1491 rval = NDI_FAILURE;
1492 goto done;
1493 }
1494 break;
1495 } else {
1496 cookie_list = cookie_list->next_cookie;
1497 }
1498 }
1499 }
1500
1501 /*
1502 * remove all events found within the handle
1503 * If an event is not found, this function will proceed as if the event
1504 * was never specified.
1505 */
1506
1507 for (i = 0; i < ndi_events->ndi_n_events; i++) {
1508 cookie_list = handle->ndi_evthdl_cookie_list;
1509 prev = NULL;
1510 while (cookie_list != NULL) {
1511 len = strlen(NDI_EVENT_NAME(cookie_list)) + 1;
1512 if (strncmp(NDI_EVENT_NAME(cookie_list),
1513 ndi_event_defs[i].ndi_event_name, len) == 0) {
1514
1515 /*
1516 * can not unbind an event definition with
1517 * outstanding callbacks
1518 */
1519 if (cookie_list->callback_list) {
1520 rval = NDI_FAILURE;
1521 goto done;
1522 }
1523
1524 /* remove this cookie from the list */
1525 if (prev != NULL) {
1526 prev->next_cookie =
1527 cookie_list->next_cookie;
1528 } else {
1529 handle->ndi_evthdl_cookie_list =
1530 cookie_list->next_cookie;
1531 }
1532
1533 /* adjust plevel counts */
1534 if (NDI_EVENT_PLEVEL(cookie_list) ==
1535 EPL_HIGHLEVEL) {
1536 handle->ndi_evthdl_high_plevels--;
1537 } else {
1538 handle->ndi_evthdl_other_plevels--;
1539 }
1540
1541 /* adjust cookie count */
1542 handle->ndi_evthdl_n_events--;
1543
1544 /* free the cookie */
1545 kmem_free(cookie_list,
1546 sizeof (ndi_event_cookie_t));
1547
1548 cookie_list = handle->ndi_evthdl_cookie_list;
1549 break;
1550
1551 } else {
1552 prev = cookie_list;
1553 cookie_list = cookie_list->next_cookie;
1554 }
1555
1556 }
1557
1558 }
1559
1560 #ifdef NDI_EVENT_DEBUG
1561 if (ndi_event_debug) {
1562 ndi_event_dump_hdl(handle, "ndi_event_unbind_set");
1563 }
1564 #endif /* NDI_EVENT_DEBUG */
1565
1566 rval = NDI_SUCCESS;
1567
1568 done:
1569 mutex_exit(&handle->ndi_evthdl_cb_mutex);
1570 mutex_exit(&handle->ndi_evthdl_mutex);
1571
1572 return (rval);
1573 }
1574
1575 /*
1576 * ndi_event_retrieve_cookie():
1577 * Return an event cookie for eventname if this nexus driver
1578 * has defined the named event. The event cookie returned
1579 * by this function is used to register callback handlers
1580 * for the event.
1581 *
1582 * ndi_event_retrieve_cookie() is intended to be used in the
1583 * nexus driver's bus_get_eventcookie busop routine.
1584 *
1585 * If the event is not defined by this bus nexus driver, and flag
1586 * does not include NDI_EVENT_NOPASS, then ndi_event_retrieve_cookie()
1587 * will pass the request up the device tree hierarchy by calling
1588 * ndi_busop_get_eventcookie(9N).
1589 * If the event is not defined by this bus nexus driver, and flag
1590 * does include NDI_EVENT_NOPASS, ndi_event_retrieve_cookie()
1591 * will return NDI_FAILURE. The caller may then determine what further
1592 * action to take, such as using a different handle, passing the
1593 * request up the device tree using ndi_busop_get_eventcookie(9N),
1594 * or returning the failure to the caller, thus blocking the
1595 * progress of the request up the tree.
1596 */
1597 int
1598 ndi_event_retrieve_cookie(ndi_event_hdl_t handle,
1599 dev_info_t *rdip,
1600 char *eventname,
1601 ddi_eventcookie_t *cookiep,
1602 uint_t flag)
1603 {
1604 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
1605 int len;
1606 ndi_event_cookie_t *cookie_list;
1607
1608 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
1609
1610 cookie_list = ndi_event_hdl->ndi_evthdl_cookie_list;
1611 /*
1612 * search the cookie list for the event name and return
1613 * cookie if found.
1614 */
1615 while (cookie_list != NULL) {
1616
1617 len = strlen(NDI_EVENT_NAME(cookie_list)) + 1;
1618 if (strncmp(NDI_EVENT_NAME(cookie_list), eventname,
1619 len) == 0) {
1620 *cookiep = (ddi_eventcookie_t)cookie_list;
1621
1622 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1623 return (NDI_SUCCESS);
1624 }
1625
1626 cookie_list = cookie_list->next_cookie;
1627 }
1628
1629 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1630 /*
1631 * event was not found, pass up or return failure
1632 */
1633 if ((flag & NDI_EVENT_NOPASS) == 0) {
1634 return (ndi_busop_get_eventcookie(
1635 ndi_event_hdl->ndi_evthdl_dip, rdip, eventname, cookiep));
1636 } else {
1637 return (NDI_FAILURE);
1638 }
1639 }
1640
1641 /*
1642 * check whether this nexus defined this event and look up attributes
1643 */
1644 static int
1645 ndi_event_is_defined(ndi_event_hdl_t handle,
1646 ddi_eventcookie_t cookie, int *attributes)
1647 {
1648
1649 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
1650 ndi_event_cookie_t *cookie_list;
1651
1652 ASSERT(mutex_owned(&handle->ndi_evthdl_mutex));
1653
1654 cookie_list = ndi_event_hdl->ndi_evthdl_cookie_list;
1655 while (cookie_list != NULL) {
1656 if (cookie_list == NDI_EVENT(cookie)) {
1657 if (attributes)
1658 *attributes =
1659 NDI_EVENT_ATTRIBUTES(cookie_list);
1660
1661 return (NDI_SUCCESS);
1662 }
1663
1664 cookie_list = cookie_list->next_cookie;
1665 }
1666
1667 return (NDI_FAILURE);
1668 }
1669
1670 /*
1671 * ndi_event_add_callback(): adds an event callback registration
1672 * to the event cookie defining this event.
1673 *
1674 * Refer also to bus_add_eventcall(9n) and ndi_busop_add_eventcall(9n).
1675 *
1676 * ndi_event_add_callback(9n) is intended to be used in
1677 * the nexus driver's bus_add_eventcall(9n) busop function.
1678 *
1679 * If the event is not defined by this bus nexus driver,
1680 * ndi_event_add_callback() will return NDI_FAILURE.
1681 */
1682 int
1683 ndi_event_add_callback(ndi_event_hdl_t handle, dev_info_t *child_dip,
1684 ddi_eventcookie_t cookie,
1685 void (*event_callback)(dev_info_t *,
1686 ddi_eventcookie_t, void *arg, void *impldata),
1687 void *arg,
1688 uint_t flag,
1689 ddi_callback_id_t *cb_id)
1690 {
1691 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
1692 int km_flag = ((flag & NDI_NOSLEEP) ? KM_NOSLEEP : KM_SLEEP);
1693 ndi_event_callbacks_t *cb;
1694
1695 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
1696
1697 /*
1698 * if the event was not bound to this handle, return failure
1699 */
1700 if (ndi_event_is_defined(handle, cookie, NULL) != NDI_SUCCESS) {
1701
1702 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1703 return (NDI_FAILURE);
1704
1705 }
1706
1707 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1708
1709 /*
1710 * allocate space for a callback structure
1711 */
1712 cb = kmem_zalloc(sizeof (ndi_event_callbacks_t), km_flag);
1713 if (cb == NULL) {
1714 return (NDI_FAILURE);
1715 }
1716
1717 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
1718
1719 /* initialize callback structure */
1720 cb->ndi_evtcb_dip = child_dip;
1721 cb->ndi_evtcb_callback = event_callback;
1722 cb->ndi_evtcb_arg = arg;
1723 cb->ndi_evtcb_cookie = cookie;
1724 cb->devname = (char *)ddi_driver_name(child_dip);
1725
1726 *cb_id = (ddi_callback_id_t)cb;
1727 mutex_enter(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1728
1729 /* add this callback structure to the list */
1730 if (NDI_EVENT(cookie)->callback_list) {
1731 cb->ndi_evtcb_next = NDI_EVENT(cookie)->callback_list;
1732 NDI_EVENT(cookie)->callback_list->ndi_evtcb_prev = cb;
1733 NDI_EVENT(cookie)->callback_list = cb;
1734 } else {
1735 NDI_EVENT(cookie)->callback_list = cb;
1736 }
1737 #ifdef NDI_EVENT_DEBUG
1738 if (ndi_event_debug) {
1739 ndi_event_dump_hdl(ndi_event_hdl, "ndi_event_add_callback");
1740 }
1741 #endif /* NDI_EVENT_DEBUG */
1742
1743 mutex_exit(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1744 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1745
1746 return (NDI_SUCCESS);
1747 }
1748
1749 /*
1750 * ndi_event_remove_callback():
1751 *
1752 * ndi_event_remove_callback() removes a callback that was
1753 * previously registered using ndi_event_add_callback(9N).
1754 * Refer also to bus_remove_eventcall(9n) and
1755 * ndi_busop_remove_eventcall(9n).
1756 * ndi_event_remove_callback(9n) is intended to be used in
1757 * the nexus driver's bus_remove_eventcall (9n) busop function.
1758 * If the event is not defined by this bus nexus driver,
1759 * ndi_event_remove_callback() will return NDI_FAILURE.
1760 */
1761 static void do_ndi_event_remove_callback(struct ndi_event_hdl *ndi_event_hdl,
1762 ddi_callback_id_t cb_id);
1763
1764 int
1765 ndi_event_remove_callback(ndi_event_hdl_t handle, ddi_callback_id_t cb_id)
1766 {
1767 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
1768
1769 ASSERT(cb_id);
1770
1771 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
1772 mutex_enter(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1773
1774 do_ndi_event_remove_callback(ndi_event_hdl, cb_id);
1775
1776 mutex_exit(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1777 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1778
1779 return (NDI_SUCCESS);
1780 }
1781
1782 /*ARGSUSED*/
1783 static void
1784 do_ndi_event_remove_callback(struct ndi_event_hdl *ndi_event_hdl,
1785 ddi_callback_id_t cb_id)
1786 {
1787 ndi_event_callbacks_t *cb = (ndi_event_callbacks_t *)cb_id;
1788 ASSERT(cb);
1789
1790 ASSERT(mutex_owned(&ndi_event_hdl->ndi_evthdl_mutex));
1791 ASSERT(mutex_owned(&ndi_event_hdl->ndi_evthdl_cb_mutex));
1792
1793 /* remove from callback linked list */
1794 if (cb->ndi_evtcb_prev) {
1795 cb->ndi_evtcb_prev->ndi_evtcb_next = cb->ndi_evtcb_next;
1796 }
1797
1798 if (cb->ndi_evtcb_next) {
1799 cb->ndi_evtcb_next->ndi_evtcb_prev = cb->ndi_evtcb_prev;
1800 }
1801
1802 if (NDI_EVENT(cb->ndi_evtcb_cookie)->callback_list == cb) {
1803 NDI_EVENT(cb->ndi_evtcb_cookie)->callback_list =
1804 cb->ndi_evtcb_next;
1805 }
1806
1807 kmem_free(cb, sizeof (ndi_event_callbacks_t));
1808 }
1809
1810 /*
1811 * ndi_event_run_callbacks() performs event callbacks for the event
1812 * specified by cookie, if this is among those bound to the
1813 * supplied handle.
1814 * If the event is among those bound to the handle, none,
1815 * some, or all of the handlers registered for the event
1816 * will be called, according to the delivery attributes of
1817 * the event.
1818 * If the event attributes include NDI_EVENT_POST_TO_ALL
1819 * (the default), all the handlers for the event will be
1820 * called in an unspecified order.
1821 * If the event attributes include NDI_EVENT_POST_TO_TGT, only
1822 * the handlers (if any) registered by the driver identified by
1823 * rdip will be called.
1824 * If the event identified by cookie is not bound to the handle,
1825 * NDI_FAILURE will be returned.
1826 */
1827 int
1828 ndi_event_run_callbacks(ndi_event_hdl_t handle, dev_info_t *child_dip,
1829 ddi_eventcookie_t cookie, void *bus_impldata)
1830 {
1831 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
1832 ndi_event_callbacks_t *next, *cb;
1833 int attributes;
1834
1835 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
1836
1837 /* if this is not our event, fail */
1838 if (ndi_event_is_defined(handle, cookie, &attributes) !=
1839 NDI_SUCCESS) {
1840
1841 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1842 return (NDI_FAILURE);
1843 }
1844
1845 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1846
1847 #ifdef NDI_EVENT_DEBUG
1848 if (ndi_event_debug) {
1849 cmn_err(CE_CONT, "ndi_event_run_callbacks:\n\t"
1850 "producer dip=%p (%s%d): cookie = %p, name = %s\n",
1851 (void *)ndi_event_hdl->ndi_evthdl_dip,
1852 ddi_node_name(ndi_event_hdl->ndi_evthdl_dip),
1853 ddi_get_instance(ndi_event_hdl->ndi_evthdl_dip),
1854 (void *)cookie,
1855 ndi_event_cookie_to_name(handle, cookie));
1856 }
1857 #endif /* #ifdef NDI_EVENT_DEBUG */
1858
1859
1860 /*
1861 * The callback handlers may call conversion functions. The conversion
1862 * functions may hold the ndi_evthdl_mutex during execution. Thus, to
1863 * avoid a recursive mutex problem, only the ndi_evthdl_cb_mutex is
1864 * held. The ndi_evthdl_mutex is not held when running the callbacks.
1865 */
1866 mutex_enter(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1867
1868 /* perform callbacks */
1869 next = NDI_EVENT(cookie)->callback_list;
1870 while (next != NULL) {
1871
1872 cb = next;
1873 next = next->ndi_evtcb_next;
1874
1875 ASSERT(cb->ndi_evtcb_cookie == cookie);
1876
1877 if (attributes == NDI_EVENT_POST_TO_TGT &&
1878 child_dip != cb->ndi_evtcb_dip) {
1879 continue;
1880 }
1881
1882 cb->ndi_evtcb_callback(cb->ndi_evtcb_dip, cb->ndi_evtcb_cookie,
1883 cb->ndi_evtcb_arg, bus_impldata);
1884
1885 #ifdef NDI_EVENT_DEBUG
1886 if (ndi_event_debug) {
1887 cmn_err(CE_CONT,
1888 "\t\tconsumer dip=%p (%s%d)\n",
1889 (void *)cb->ndi_evtcb_dip,
1890 ddi_node_name(cb->ndi_evtcb_dip),
1891 ddi_get_instance(cb->ndi_evtcb_dip));
1892 }
1893 #endif
1894
1895 }
1896
1897 mutex_exit(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1898
1899 #ifdef NDI_EVENT_DEBUG
1900 if (ndi_event_debug) {
1901 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
1902 ndi_event_dump_hdl(ndi_event_hdl, "ndi_event_run_callbacks");
1903 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1904 }
1905 #endif /* NDI_EVENT_DEBUG */
1906
1907 return (NDI_SUCCESS);
1908 }
1909
1910
1911 /*
1912 * perform one callback for a specified cookie and just one target
1913 */
1914 int
1915 ndi_event_do_callback(ndi_event_hdl_t handle, dev_info_t *child_dip,
1916 ddi_eventcookie_t cookie, void *bus_impldata)
1917 {
1918 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
1919 ndi_event_callbacks_t *next, *cb;
1920 int attributes;
1921
1922 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
1923
1924 /* if this is not our event, fail */
1925 if (ndi_event_is_defined(handle, cookie, &attributes) !=
1926 NDI_SUCCESS) {
1927
1928 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1929
1930 return (NDI_FAILURE);
1931 }
1932
1933 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1934
1935 #ifdef NDI_EVENT_DEBUG
1936 if (ndi_event_debug) {
1937 cmn_err(CE_CONT, "ndi_event_run_callbacks:\n\t"
1938 "producer dip=%p (%s%d): cookie = %p, name = %s\n",
1939 (void *)ndi_event_hdl->ndi_evthdl_dip,
1940 ddi_node_name(ndi_event_hdl->ndi_evthdl_dip),
1941 ddi_get_instance(ndi_event_hdl->ndi_evthdl_dip),
1942 (void *)cookie,
1943 ndi_event_cookie_to_name(handle, cookie));
1944 }
1945 #endif
1946
1947
1948 /*
1949 * we only grab the cb mutex because the callback handlers
1950 * may call the conversion functions which would cause a recursive
1951 * mutex problem
1952 */
1953 mutex_enter(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1954
1955 /* perform callbacks */
1956 for (next = NDI_EVENT(cookie)->callback_list; next != NULL; ) {
1957 cb = next;
1958 next = next->ndi_evtcb_next;
1959
1960 if (cb->ndi_evtcb_dip == child_dip) {
1961 cb->ndi_evtcb_callback(cb->ndi_evtcb_dip,
1962 cb->ndi_evtcb_cookie, cb->ndi_evtcb_arg,
1963 bus_impldata);
1964
1965 #ifdef NDI_EVENT_DEBUG
1966 if (ndi_event_debug) {
1967 cmn_err(CE_CONT,
1968 "\t\tconsumer dip=%p (%s%d)\n",
1969 (void *)cb->ndi_evtcb_dip,
1970 ddi_node_name(cb->ndi_evtcb_dip),
1971 ddi_get_instance(cb->ndi_evtcb_dip));
1972 }
1973 #endif
1974 break;
1975 }
1976 }
1977
1978 mutex_exit(&ndi_event_hdl->ndi_evthdl_cb_mutex);
1979
1980 #ifdef NDI_EVENT_DEBUG
1981 if (ndi_event_debug) {
1982 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
1983 ndi_event_dump_hdl(ndi_event_hdl, "ndi_event_run_callbacks");
1984 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
1985 }
1986 #endif /* NDI_EVENT_DEBUG */
1987
1988 return (NDI_SUCCESS);
1989 }
1990
1991
1992 /*
1993 * ndi_event_tag_to_cookie: utility function to find an event cookie
1994 * given an event tag
1995 */
1996 ddi_eventcookie_t
1997 ndi_event_tag_to_cookie(ndi_event_hdl_t handle, int event_tag)
1998 {
1999 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
2000 ndi_event_cookie_t *list;
2001
2002 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
2003
2004 list = ndi_event_hdl->ndi_evthdl_cookie_list;
2005 while (list != NULL) {
2006 if (NDI_EVENT_TAG(list) == event_tag) {
2007 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
2008 return ((ddi_eventcookie_t)list);
2009 }
2010
2011 list = list->next_cookie;
2012 }
2013
2014 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
2015 return (NULL);
2016 }
2017
2018 /*
2019 * ndi_event_cookie_to_tag: utility function to find a event tag
2020 * given an event_cookie
2021 */
2022 int
2023 ndi_event_cookie_to_tag(ndi_event_hdl_t handle, ddi_eventcookie_t cookie)
2024 {
2025 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
2026 ndi_event_cookie_t *list;
2027
2028 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
2029
2030 list = ndi_event_hdl->ndi_evthdl_cookie_list;
2031
2032 while (list != NULL) {
2033 if ((ddi_eventcookie_t)list == cookie) {
2034 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
2035 return (NDI_EVENT_TAG(list));
2036 }
2037
2038 list = list->next_cookie;
2039 }
2040
2041 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
2042 return (NDI_FAILURE);
2043
2044 }
2045
2046 /*
2047 * ndi_event_cookie_to_name: utility function to find an event name
2048 * given an event_cookie
2049 */
2050 char *
2051 ndi_event_cookie_to_name(ndi_event_hdl_t handle, ddi_eventcookie_t cookie)
2052 {
2053 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
2054 ndi_event_cookie_t *list;
2055
2056 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
2057
2058 list = ndi_event_hdl->ndi_evthdl_cookie_list;
2059
2060 while (list != NULL) {
2061 if (list == NDI_EVENT(cookie)) {
2062 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
2063 return (NDI_EVENT_NAME(list));
2064 }
2065
2066 list = list->next_cookie;
2067 }
2068
2069 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
2070 return (NULL);
2071 }
2072
2073 /*
2074 * ndi_event_tag_to_name: utility function to find an event name
2075 * given an event tag
2076 */
2077 char *
2078 ndi_event_tag_to_name(ndi_event_hdl_t handle, int event_tag)
2079 {
2080 struct ndi_event_hdl *ndi_event_hdl = (struct ndi_event_hdl *)handle;
2081 ndi_event_cookie_t *list;
2082
2083 mutex_enter(&ndi_event_hdl->ndi_evthdl_mutex);
2084
2085 list = ndi_event_hdl->ndi_evthdl_cookie_list;
2086
2087 while (list) {
2088 if (NDI_EVENT_TAG(list) == event_tag) {
2089 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
2090 return (NDI_EVENT_NAME(list));
2091 }
2092
2093 list = list->next_cookie;
2094 }
2095
2096 mutex_exit(&ndi_event_hdl->ndi_evthdl_mutex);
2097
2098 return (NULL);
2099 }
2100
2101 #ifdef NDI_EVENT_DEBUG
2102 void
2103 ndi_event_dump_hdl(struct ndi_event_hdl *hdl, char *location)
2104 {
2105
2106
2107 ndi_event_callbacks_t *next;
2108 ndi_event_cookie_t *list;
2109
2110 ASSERT(mutex_owned(&hdl->ndi_evthdl_mutex));
2111 list = hdl->ndi_evthdl_cookie_list;
2112
2113 cmn_err(CE_CONT, "%s: event handle (%p): dip = %p (%s%d)\n",
2114 location, (void *)hdl, (void *)hdl->ndi_evthdl_dip,
2115 ddi_node_name(hdl->ndi_evthdl_dip),
2116 ddi_get_instance(hdl->ndi_evthdl_dip));
2117 cmn_err(CE_CONT, "\thigh=%d other=%d n=%d\n",
2118 hdl->ndi_evthdl_high_plevels, hdl->ndi_evthdl_other_plevels,
2119 hdl->ndi_evthdl_n_events);
2120
2121 cmn_err(CE_CONT, "\tevent cookies:\n");
2122 while (list) {
2123 cmn_err(CE_CONT, "\t\ttag=%d name=%s p=%d a=%x dd=%p\n",
2124 NDI_EVENT_TAG(list), NDI_EVENT_NAME(list),
2125 NDI_EVENT_PLEVEL(list), NDI_EVENT_ATTRIBUTES(list),
2126 (void *)NDI_EVENT_DDIP(list));
2127 cmn_err(CE_CONT, "\t\tcallbacks:\n");
2128 for (next = list->callback_list; next != NULL;
2129 next = next->ndi_evtcb_next) {
2130 cmn_err(CE_CONT,
2131 "\t\t dip=%p (%s%d) cookie=%p arg=%p\n",
2132 (void*)next->ndi_evtcb_dip,
2133 ddi_driver_name(next->ndi_evtcb_dip),
2134 ddi_get_instance(next->ndi_evtcb_dip),
2135 (void *)next->ndi_evtcb_cookie,
2136 next->ndi_evtcb_arg);
2137 }
2138
2139 list = list->next_cookie;
2140 }
2141
2142 cmn_err(CE_CONT, "\n");
2143 }
2144 #endif
2145
2146 int
2147 ndi_dev_is_prom_node(dev_info_t *dip)
2148 {
2149 return (DEVI(dip)->devi_node_class == DDI_NC_PROM);
2150 }
2151
2152 int
2153 ndi_dev_is_pseudo_node(dev_info_t *dip)
2154 {
2155 /*
2156 * NOTE: this does NOT mean the pseudo branch of the device tree,
2157 * it means the node was created by software (DEVI_SID_NODEID ||
2158 * DEVI_PSEUDO_NODEID || DEVI_SID_HIDDEN_NODEID) instead of being
2159 * generated from a PROM node.
2160 */
2161 return (DEVI(dip)->devi_node_class == DDI_NC_PSEUDO);
2162 }
2163
2164 int
2165 ndi_dev_is_persistent_node(dev_info_t *dip)
2166 {
2167 return ((DEVI(dip)->devi_node_attributes & DDI_PERSISTENT) != 0);
2168 }
2169
2170 int
2171 ndi_dev_is_hidden_node(dev_info_t *dip)
2172 {
2173 return ((DEVI(dip)->devi_node_attributes & DDI_HIDDEN_NODE) != 0);
2174 }
2175
2176 int
2177 ndi_dev_is_hotplug_node(dev_info_t *dip)
2178 {
2179 return ((DEVI(dip)->devi_node_attributes & DDI_HOTPLUG_NODE) != 0);
2180 }
2181
2182 void
2183 ndi_devi_set_hidden(dev_info_t *dip)
2184 {
2185 DEVI(dip)->devi_node_attributes |= DDI_HIDDEN_NODE;
2186 }
2187
2188 void
2189 ndi_devi_clr_hidden(dev_info_t *dip)
2190 {
2191 DEVI(dip)->devi_node_attributes &= ~DDI_HIDDEN_NODE;
2192 }
2193
2194 int
2195 i_ndi_dev_is_auto_assigned_node(dev_info_t *dip)
2196 {
2197 return ((DEVI(dip)->devi_node_attributes &
2198 DDI_AUTO_ASSIGNED_NODEID) != 0);
2199 }
2200
2201 void
2202 i_ndi_set_node_class(dev_info_t *dip, ddi_node_class_t c)
2203 {
2204 DEVI(dip)->devi_node_class = c;
2205 }
2206
2207 ddi_node_class_t
2208 i_ndi_get_node_class(dev_info_t *dip)
2209 {
2210 return (DEVI(dip)->devi_node_class);
2211 }
2212
2213 void
2214 i_ndi_set_node_attributes(dev_info_t *dip, int p)
2215 {
2216 DEVI(dip)->devi_node_attributes = p;
2217 }
2218
2219 int
2220 i_ndi_get_node_attributes(dev_info_t *dip)
2221 {
2222 return (DEVI(dip)->devi_node_attributes);
2223 }
2224
2225 void
2226 i_ndi_set_nodeid(dev_info_t *dip, int n)
2227 {
2228 DEVI(dip)->devi_nodeid = n;
2229 }
2230
2231 void
2232 ndi_set_acc_fault(ddi_acc_handle_t ah)
2233 {
2234 i_ddi_acc_set_fault(ah);
2235 }
2236
2237 void
2238 ndi_clr_acc_fault(ddi_acc_handle_t ah)
2239 {
2240 i_ddi_acc_clr_fault(ah);
2241 }
2242
2243 void
2244 ndi_set_dma_fault(ddi_dma_handle_t dh)
2245 {
2246 i_ddi_dma_set_fault(dh);
2247 }
2248
2249 void
2250 ndi_clr_dma_fault(ddi_dma_handle_t dh)
2251 {
2252 i_ddi_dma_clr_fault(dh);
2253 }
2254
2255 /*
2256 * The default fault-handler, called when the event posted by
2257 * ddi_dev_report_fault() reaches rootnex.
2258 */
2259 static void
2260 i_ddi_fault_handler(dev_info_t *dip, struct ddi_fault_event_data *fedp)
2261 {
2262 ASSERT(fedp);
2263
2264 mutex_enter(&(DEVI(dip)->devi_lock));
2265 if (!DEVI_IS_DEVICE_OFFLINE(dip)) {
2266 switch (fedp->f_impact) {
2267 case DDI_SERVICE_LOST:
2268 DEVI_SET_DEVICE_DOWN(dip);
2269 break;
2270
2271 case DDI_SERVICE_DEGRADED:
2272 DEVI_SET_DEVICE_DEGRADED(dip);
2273 break;
2274
2275 case DDI_SERVICE_UNAFFECTED:
2276 default:
2277 break;
2278
2279 case DDI_SERVICE_RESTORED:
2280 DEVI_SET_DEVICE_UP(dip);
2281 break;
2282 }
2283 }
2284 mutex_exit(&(DEVI(dip)->devi_lock));
2285 }
2286
2287 /*
2288 * The default fault-logger, called when the event posted by
2289 * ddi_dev_report_fault() reaches rootnex.
2290 */
2291 /*ARGSUSED*/
2292 static void
2293 i_ddi_fault_logger(dev_info_t *rdip, struct ddi_fault_event_data *fedp)
2294 {
2295 ddi_devstate_t newstate;
2296 const char *action;
2297 const char *servstate;
2298 const char *location;
2299 int bad;
2300 int changed;
2301 int level;
2302 int still;
2303
2304 ASSERT(fedp);
2305
2306 bad = 0;
2307 switch (fedp->f_location) {
2308 case DDI_DATAPATH_FAULT:
2309 location = "in datapath to";
2310 break;
2311 case DDI_DEVICE_FAULT:
2312 location = "in";
2313 break;
2314 case DDI_EXTERNAL_FAULT:
2315 location = "external to";
2316 break;
2317 default:
2318 location = "somewhere near";
2319 bad = 1;
2320 break;
2321 }
2322
2323 newstate = ddi_get_devstate(fedp->f_dip);
2324 switch (newstate) {
2325 case DDI_DEVSTATE_OFFLINE:
2326 servstate = "unavailable";
2327 break;
2328 case DDI_DEVSTATE_DOWN:
2329 servstate = "unavailable";
2330 break;
2331 case DDI_DEVSTATE_QUIESCED:
2332 servstate = "suspended";
2333 break;
2334 case DDI_DEVSTATE_DEGRADED:
2335 servstate = "degraded";
2336 break;
2337 default:
2338 servstate = "available";
2339 break;
2340 }
2341
2342 changed = (newstate != fedp->f_oldstate);
2343 level = (newstate < fedp->f_oldstate) ? CE_WARN : CE_NOTE;
2344 switch (fedp->f_impact) {
2345 case DDI_SERVICE_LOST:
2346 case DDI_SERVICE_DEGRADED:
2347 case DDI_SERVICE_UNAFFECTED:
2348 /* fault detected; service [still] <servstate> */
2349 action = "fault detected";
2350 still = !changed;
2351 break;
2352
2353 case DDI_SERVICE_RESTORED:
2354 if (newstate != DDI_DEVSTATE_UP) {
2355 /* fault cleared; service still <servstate> */
2356 action = "fault cleared";
2357 still = 1;
2358 } else if (changed) {
2359 /* fault cleared; service <servstate> */
2360 action = "fault cleared";
2361 still = 0;
2362 } else {
2363 /* no fault; service <servstate> */
2364 action = "no fault";
2365 still = 0;
2366 }
2367 break;
2368
2369 default:
2370 bad = 1;
2371 break;
2372 }
2373
2374 cmn_err(level, "!%s%d: %s %s device; service %s%s"+(bad|changed),
2375 ddi_driver_name(fedp->f_dip), ddi_get_instance(fedp->f_dip),
2376 bad ? "invalid report of fault" : action,
2377 location, still ? "still " : "", servstate);
2378
2379 cmn_err(level, "!%s%d: %s"+(bad|changed),
2380 ddi_driver_name(fedp->f_dip), ddi_get_instance(fedp->f_dip),
2381 fedp->f_message);
2382 }
2383
2384 /*
2385 * Platform-settable pointers to fault handler and logger functions.
2386 * These are called by the default rootnex event-posting code when
2387 * a fault event reaches rootnex.
2388 */
2389 void (*plat_fault_handler)(dev_info_t *, struct ddi_fault_event_data *) =
2390 i_ddi_fault_handler;
2391 void (*plat_fault_logger)(dev_info_t *, struct ddi_fault_event_data *) =
2392 i_ddi_fault_logger;
2393
2394 /*
2395 * Rootnex event definitions ...
2396 */
2397 enum rootnex_event_tags {
2398 ROOTNEX_FAULT_EVENT
2399 };
2400 static ndi_event_hdl_t rootnex_event_hdl;
2401 static ndi_event_definition_t rootnex_event_set[] = {
2402 {
2403 ROOTNEX_FAULT_EVENT,
2404 DDI_DEVI_FAULT_EVENT,
2405 EPL_INTERRUPT,
2406 NDI_EVENT_POST_TO_ALL
2407 }
2408 };
2409 static ndi_event_set_t rootnex_events = {
2410 NDI_EVENTS_REV1,
2411 sizeof (rootnex_event_set) / sizeof (rootnex_event_set[0]),
2412 rootnex_event_set
2413 };
2414
2415 /*
2416 * Initialize rootnex event handle
2417 */
2418 void
2419 i_ddi_rootnex_init_events(dev_info_t *dip)
2420 {
2421 if (ndi_event_alloc_hdl(dip, (ddi_iblock_cookie_t)(LOCK_LEVEL-1),
2422 &rootnex_event_hdl, NDI_SLEEP) == NDI_SUCCESS) {
2423 if (ndi_event_bind_set(rootnex_event_hdl,
2424 &rootnex_events, NDI_SLEEP) != NDI_SUCCESS) {
2425 (void) ndi_event_free_hdl(rootnex_event_hdl);
2426 rootnex_event_hdl = NULL;
2427 }
2428 }
2429 }
2430
2431 /*
2432 * Event-handling functions for rootnex
2433 * These provide the standard implementation of fault handling
2434 */
2435 /*ARGSUSED*/
2436 int
2437 i_ddi_rootnex_get_eventcookie(dev_info_t *dip, dev_info_t *rdip,
2438 char *eventname, ddi_eventcookie_t *cookiep)
2439 {
2440 if (rootnex_event_hdl == NULL)
2441 return (NDI_FAILURE);
2442 return (ndi_event_retrieve_cookie(rootnex_event_hdl, rdip, eventname,
2443 cookiep, NDI_EVENT_NOPASS));
2444 }
2445
2446 /*ARGSUSED*/
2447 int
2448 i_ddi_rootnex_add_eventcall(dev_info_t *dip, dev_info_t *rdip,
2449 ddi_eventcookie_t eventid, void (*handler)(dev_info_t *dip,
2450 ddi_eventcookie_t event, void *arg, void *impl_data), void *arg,
2451 ddi_callback_id_t *cb_id)
2452 {
2453 if (rootnex_event_hdl == NULL)
2454 return (NDI_FAILURE);
2455 return (ndi_event_add_callback(rootnex_event_hdl, rdip,
2456 eventid, handler, arg, NDI_SLEEP, cb_id));
2457 }
2458
2459 /*ARGSUSED*/
2460 int
2461 i_ddi_rootnex_remove_eventcall(dev_info_t *dip, ddi_callback_id_t cb_id)
2462 {
2463 if (rootnex_event_hdl == NULL)
2464 return (NDI_FAILURE);
2465
2466 return (ndi_event_remove_callback(rootnex_event_hdl, cb_id));
2467 }
2468
2469 /*ARGSUSED*/
2470 int
2471 i_ddi_rootnex_post_event(dev_info_t *dip, dev_info_t *rdip,
2472 ddi_eventcookie_t eventid, void *impl_data)
2473 {
2474 int tag;
2475
2476 if (rootnex_event_hdl == NULL)
2477 return (NDI_FAILURE);
2478
2479 tag = ndi_event_cookie_to_tag(rootnex_event_hdl, eventid);
2480 if (tag == ROOTNEX_FAULT_EVENT) {
2481 (*plat_fault_handler)(rdip, impl_data);
2482 (*plat_fault_logger)(rdip, impl_data);
2483 }
2484 return (ndi_event_run_callbacks(rootnex_event_hdl, rdip,
2485 eventid, impl_data));
2486 }
2487
2488 /*
2489 * ndi_set_bus_private/ndi_get_bus_private:
2490 * Get/set device bus private data in devinfo.
2491 */
2492 void
2493 ndi_set_bus_private(dev_info_t *dip, boolean_t up, uint32_t port_type,
2494 void *data)
2495 {
2496 if (up) {
2497 DEVI(dip)->devi_bus.port_up.info.port.type = port_type;
2498 DEVI(dip)->devi_bus.port_up.priv_p = data;
2499 } else {
2500 DEVI(dip)->devi_bus.port_down.info.port.type = port_type;
2501 DEVI(dip)->devi_bus.port_down.priv_p = data;
2502 }
2503 }
2504
2505 void *
2506 ndi_get_bus_private(dev_info_t *dip, boolean_t up)
2507 {
2508 if (up)
2509 return (DEVI(dip)->devi_bus.port_up.priv_p);
2510 else
2511 return (DEVI(dip)->devi_bus.port_down.priv_p);
2512 }
2513
2514 boolean_t
2515 ndi_port_type(dev_info_t *dip, boolean_t up, uint32_t port_type)
2516 {
2517 if (up) {
2518 return ((DEVI(dip)->devi_bus.port_up.info.port.type) ==
2519 port_type);
2520 } else {
2521 return ((DEVI(dip)->devi_bus.port_down.info.port.type) ==
2522 port_type);
2523 }
2524 }
2525
2526 /* Interfaces for 'self' to set/get a child's flavor */
2527 void
2528 ndi_flavor_set(dev_info_t *child, ndi_flavor_t child_flavor)
2529 {
2530 DEVI(child)->devi_flavor = child_flavor;
2531 }
2532
2533 ndi_flavor_t
2534 ndi_flavor_get(dev_info_t *child)
2535 {
2536 return (DEVI(child)->devi_flavor);
2537 }
2538
2539 /*
2540 * Interfaces to maintain flavor-specific private data of flavored
2541 * children of self.
2542 *
2543 * The flavor count always includes the default (0) vanilla flavor,
2544 * but storage for the vanilla flavor data pointer is in the same
2545 * place that ddi_[sg]et_driver_private uses, so the flavorv
2546 * storage is just for flavors 1..{nflavors-1}.
2547 */
2548 void
2549 ndi_flavorv_alloc(dev_info_t *self, int nflavors)
2550 {
2551 ASSERT(nflavors > 0 && (DEVI(self)->devi_flavorv == NULL ||
2552 nflavors == DEVI(self)->devi_flavorv_n));
2553 if (nflavors <= 1 || (DEVI(self)->devi_flavorv)) {
2554 return;
2555 }
2556 DEVI(self)->devi_flavorv =
2557 kmem_zalloc((nflavors - 1) * sizeof (void *), KM_SLEEP);
2558 DEVI(self)->devi_flavorv_n = nflavors;
2559 }
2560
2561 void
2562 ndi_flavorv_set(dev_info_t *self, ndi_flavor_t child_flavor, void *v)
2563 {
2564 if (child_flavor == NDI_FLAVOR_VANILLA) {
2565 ddi_set_driver_private(self, v);
2566 } else {
2567 ASSERT(child_flavor < DEVI(self)->devi_flavorv_n &&
2568 DEVI(self)->devi_flavorv != NULL);
2569 if (child_flavor > DEVI(self)->devi_flavorv_n ||
2570 DEVI(self)->devi_flavorv == NULL) {
2571 return;
2572 }
2573 DEVI(self)->devi_flavorv[child_flavor - 1] = v;
2574 }
2575 }
2576
2577 void *
2578 ndi_flavorv_get(dev_info_t *self, ndi_flavor_t child_flavor)
2579 {
2580 if (child_flavor == NDI_FLAVOR_VANILLA) {
2581 return (ddi_get_driver_private(self));
2582 } else {
2583 ASSERT(child_flavor < DEVI(self)->devi_flavorv_n &&
2584 DEVI(self)->devi_flavorv != NULL);
2585 if (child_flavor > DEVI(self)->devi_flavorv_n ||
2586 DEVI(self)->devi_flavorv == NULL) {
2587 return (NULL);
2588 }
2589 return (DEVI(self)->devi_flavorv[child_flavor - 1]);
2590 }
2591 }
unleashed repo fork