1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
5 * Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006
6 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org>
7 * Copyright (c) 1997 Luigi Rizzo
8 * All rights reserved.
9 * Copyright (c) 2024-2025 The FreeBSD Foundation
10 *
11 * Portions of this software were developed by Christos Margiolis
12 * <christos@FreeBSD.org> under sponsorship from the FreeBSD Foundation.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #ifdef HAVE_KERNEL_OPTION_HEADERS
37 #include "opt_snd.h"
38 #endif
39
40 #include <dev/sound/pcm/sound.h>
41 #include <dev/sound/pcm/ac97.h>
42 #include <dev/sound/pcm/vchan.h>
43 #include <dev/sound/pcm/dsp.h>
44 #include <sys/limits.h>
45 #include <sys/sysctl.h>
46
47 #include "feeder_if.h"
48
49 devclass_t pcm_devclass;
50
51 int snd_unit = -1;
52
53 static int snd_unit_auto = -1;
54 SYSCTL_INT(_hw_snd, OID_AUTO, default_auto, CTLFLAG_RWTUN,
55 &snd_unit_auto, 0, "assign default unit to a newly attached device");
56
57 SYSCTL_NODE(_hw, OID_AUTO, snd, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
58 "Sound driver");
59
60 static void pcm_sysinit(device_t);
61
62 /**
63 * @brief Unit number allocator for syncgroup IDs
64 */
65 struct unrhdr *pcmsg_unrhdr = NULL;
66
67 void *
snd_mtxcreate(const char * desc,const char * type)68 snd_mtxcreate(const char *desc, const char *type)
69 {
70 struct mtx *m;
71
72 m = malloc(sizeof(*m), M_DEVBUF, M_WAITOK | M_ZERO);
73 mtx_init(m, desc, type, MTX_DEF);
74 return m;
75 }
76
77 void
snd_mtxfree(void * m)78 snd_mtxfree(void *m)
79 {
80 struct mtx *mtx = m;
81
82 mtx_destroy(mtx);
83 free(mtx, M_DEVBUF);
84 }
85
86 void
snd_mtxassert(void * m)87 snd_mtxassert(void *m)
88 {
89 #ifdef INVARIANTS
90 struct mtx *mtx = m;
91
92 mtx_assert(mtx, MA_OWNED);
93 #endif
94 }
95
96 int
snd_setup_intr(device_t dev,struct resource * res,int flags,driver_intr_t hand,void * param,void ** cookiep)97 snd_setup_intr(device_t dev, struct resource *res, int flags, driver_intr_t hand, void *param, void **cookiep)
98 {
99 struct snddev_info *d;
100
101 flags &= INTR_MPSAFE;
102 flags |= INTR_TYPE_AV;
103 d = device_get_softc(dev);
104 if (d != NULL && (flags & INTR_MPSAFE))
105 d->flags |= SD_F_MPSAFE;
106
107 return bus_setup_intr(dev, res, flags, NULL, hand, param, cookiep);
108 }
109
110 static int
sysctl_hw_snd_default_unit(SYSCTL_HANDLER_ARGS)111 sysctl_hw_snd_default_unit(SYSCTL_HANDLER_ARGS)
112 {
113 struct snddev_info *d;
114 int error, unit;
115
116 unit = snd_unit;
117 error = sysctl_handle_int(oidp, &unit, 0, req);
118 if (error == 0 && req->newptr != NULL) {
119 d = devclass_get_softc(pcm_devclass, unit);
120 if (!PCM_REGISTERED(d) || CHN_EMPTY(d, channels.pcm))
121 return EINVAL;
122 snd_unit = unit;
123 snd_unit_auto = 0;
124 }
125 return (error);
126 }
127 /* XXX: do we need a way to let the user change the default unit? */
128 SYSCTL_PROC(_hw_snd, OID_AUTO, default_unit,
129 CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_ANYBODY | CTLFLAG_NEEDGIANT, 0,
130 sizeof(int), sysctl_hw_snd_default_unit, "I",
131 "default sound device");
132
133 int
pcm_addchan(device_t dev,int dir,kobj_class_t cls,void * devinfo)134 pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo)
135 {
136 struct snddev_info *d = device_get_softc(dev);
137 struct pcm_channel *ch;
138
139 PCM_LOCK(d);
140 PCM_WAIT(d);
141 PCM_ACQUIRE(d);
142 ch = chn_init(d, NULL, cls, dir, devinfo);
143 if (!ch) {
144 device_printf(d->dev, "chn_init(%s, %d, %p) failed\n",
145 cls->name, dir, devinfo);
146 PCM_UNLOCK(d);
147 return (ENODEV);
148 }
149 PCM_RELEASE(d);
150 PCM_UNLOCK(d);
151
152 return (0);
153 }
154
155 static void
pcm_killchans(struct snddev_info * d)156 pcm_killchans(struct snddev_info *d)
157 {
158 struct pcm_channel *ch;
159 bool again;
160
161 PCM_BUSYASSERT(d);
162 KASSERT(!PCM_REGISTERED(d), ("%s(): still registered\n", __func__));
163
164 for (;;) {
165 again = false;
166 /* Make sure all channels are stopped. */
167 CHN_FOREACH(ch, d, channels.pcm) {
168 CHN_LOCK(ch);
169 if (ch->inprog == 0 && ch->sleeping == 0 &&
170 CHN_STOPPED(ch)) {
171 CHN_UNLOCK(ch);
172 continue;
173 }
174 chn_shutdown(ch);
175 if (ch->direction == PCMDIR_PLAY)
176 chn_flush(ch);
177 else
178 chn_abort(ch);
179 CHN_UNLOCK(ch);
180 again = true;
181 }
182 /*
183 * Some channels are still active. Sleep for a bit and try
184 * again.
185 */
186 if (again)
187 pause_sbt("pcmkillchans", mstosbt(5), 0, 0);
188 else
189 break;
190 }
191
192 /* All channels are finally dead. */
193 while (!CHN_EMPTY(d, channels.pcm)) {
194 ch = CHN_FIRST(d, channels.pcm);
195 chn_kill(ch);
196 }
197
198 if (d->p_unr != NULL)
199 delete_unrhdr(d->p_unr);
200 if (d->vp_unr != NULL)
201 delete_unrhdr(d->vp_unr);
202 if (d->r_unr != NULL)
203 delete_unrhdr(d->r_unr);
204 if (d->vr_unr != NULL)
205 delete_unrhdr(d->vr_unr);
206 }
207
208 static int
pcm_best_unit(int old)209 pcm_best_unit(int old)
210 {
211 struct snddev_info *d;
212 int i, best, bestprio, prio;
213
214 best = -1;
215 bestprio = -100;
216 for (i = 0; pcm_devclass != NULL &&
217 i < devclass_get_maxunit(pcm_devclass); i++) {
218 d = devclass_get_softc(pcm_devclass, i);
219 if (!PCM_REGISTERED(d))
220 continue;
221 prio = 0;
222 if (d->playcount == 0)
223 prio -= 10;
224 if (d->reccount == 0)
225 prio -= 2;
226 if (prio > bestprio || (prio == bestprio && i == old)) {
227 best = i;
228 bestprio = prio;
229 }
230 }
231 return (best);
232 }
233
234 uint32_t
pcm_getflags(device_t dev)235 pcm_getflags(device_t dev)
236 {
237 struct snddev_info *d = device_get_softc(dev);
238
239 return d->flags;
240 }
241
242 void
pcm_setflags(device_t dev,uint32_t val)243 pcm_setflags(device_t dev, uint32_t val)
244 {
245 struct snddev_info *d = device_get_softc(dev);
246
247 d->flags = val;
248 }
249
250 void *
pcm_getdevinfo(device_t dev)251 pcm_getdevinfo(device_t dev)
252 {
253 struct snddev_info *d = device_get_softc(dev);
254
255 return d->devinfo;
256 }
257
258 unsigned int
pcm_getbuffersize(device_t dev,unsigned int minbufsz,unsigned int deflt,unsigned int maxbufsz)259 pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz)
260 {
261 struct snddev_info *d = device_get_softc(dev);
262 int sz, x;
263
264 sz = 0;
265 if (resource_int_value(device_get_name(dev), device_get_unit(dev), "buffersize", &sz) == 0) {
266 x = sz;
267 RANGE(sz, minbufsz, maxbufsz);
268 if (x != sz)
269 device_printf(dev, "'buffersize=%d' hint is out of range (%d-%d), using %d\n", x, minbufsz, maxbufsz, sz);
270 x = minbufsz;
271 while (x < sz)
272 x <<= 1;
273 if (x > sz)
274 x >>= 1;
275 if (x != sz) {
276 device_printf(dev, "'buffersize=%d' hint is not a power of 2, using %d\n", sz, x);
277 sz = x;
278 }
279 } else {
280 sz = deflt;
281 }
282
283 d->bufsz = sz;
284
285 return sz;
286 }
287
288 static int
sysctl_dev_pcm_bitperfect(SYSCTL_HANDLER_ARGS)289 sysctl_dev_pcm_bitperfect(SYSCTL_HANDLER_ARGS)
290 {
291 struct snddev_info *d;
292 int err, val;
293
294 d = oidp->oid_arg1;
295 if (!PCM_REGISTERED(d))
296 return (ENODEV);
297
298 PCM_LOCK(d);
299 PCM_WAIT(d);
300 val = (d->flags & SD_F_BITPERFECT) ? 1 : 0;
301 PCM_ACQUIRE(d);
302 PCM_UNLOCK(d);
303
304 err = sysctl_handle_int(oidp, &val, 0, req);
305
306 if (err == 0 && req->newptr != NULL) {
307 if (!(val == 0 || val == 1)) {
308 PCM_RELEASE_QUICK(d);
309 return (EINVAL);
310 }
311
312 PCM_LOCK(d);
313
314 d->flags &= ~SD_F_BITPERFECT;
315 d->flags |= (val != 0) ? SD_F_BITPERFECT : 0;
316
317 PCM_RELEASE(d);
318 PCM_UNLOCK(d);
319 } else
320 PCM_RELEASE_QUICK(d);
321
322 return (err);
323 }
324
325 static int
sysctl_dev_pcm_mode(SYSCTL_HANDLER_ARGS)326 sysctl_dev_pcm_mode(SYSCTL_HANDLER_ARGS)
327 {
328 struct snddev_info *d;
329 int mode = 0;
330
331 d = oidp->oid_arg1;
332 if (!PCM_REGISTERED(d))
333 return (ENODEV);
334
335 PCM_LOCK(d);
336 if (d->playcount > 0)
337 mode |= PCM_MODE_PLAY;
338 if (d->reccount > 0)
339 mode |= PCM_MODE_REC;
340 if (d->mixer_dev != NULL)
341 mode |= PCM_MODE_MIXER;
342 PCM_UNLOCK(d);
343
344 return (sysctl_handle_int(oidp, &mode, 0, req));
345 }
346
347 static void
pcm_sysinit(device_t dev)348 pcm_sysinit(device_t dev)
349 {
350 struct snddev_info *d = device_get_softc(dev);
351
352 sysctl_ctx_init(&d->play_sysctl_ctx);
353 d->play_sysctl_tree = SYSCTL_ADD_NODE(&d->play_sysctl_ctx,
354 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "play",
355 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "playback channels node");
356 sysctl_ctx_init(&d->rec_sysctl_ctx);
357 d->rec_sysctl_tree = SYSCTL_ADD_NODE(&d->rec_sysctl_ctx,
358 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "rec",
359 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "recording channels node");
360
361 /* XXX: a user should be able to set this with a control tool, the
362 sysadmin then needs min+max sysctls for this */
363 SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
364 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
365 OID_AUTO, "buffersize", CTLFLAG_RD, &d->bufsz, 0, "allocated buffer size");
366 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
367 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
368 "bitperfect", CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, d,
369 sizeof(d), sysctl_dev_pcm_bitperfect, "I",
370 "bit-perfect playback/recording (0=disable, 1=enable)");
371 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
372 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
373 "mode", CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, d, sizeof(d),
374 sysctl_dev_pcm_mode, "I",
375 "mode (1=mixer, 2=play, 4=rec. The values are OR'ed if more than "
376 "one mode is supported)");
377 vchan_initsys(dev);
378 if (d->flags & SD_F_EQ)
379 feeder_eq_initsys(dev);
380 }
381
382 /*
383 * Basic initialization so that drivers can use pcm_addchan() before
384 * pcm_register().
385 */
386 void
pcm_init(device_t dev,void * devinfo)387 pcm_init(device_t dev, void *devinfo)
388 {
389 struct snddev_info *d;
390 int i;
391
392 d = device_get_softc(dev);
393 d->dev = dev;
394 d->lock = snd_mtxcreate(device_get_nameunit(dev), "sound cdev");
395 cv_init(&d->cv, device_get_nameunit(dev));
396
397 i = 0;
398 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
399 "vpc", &i) != 0 || i != 0)
400 d->flags |= SD_F_VPC;
401
402 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
403 "bitperfect", &i) == 0 && i != 0)
404 d->flags |= SD_F_BITPERFECT;
405
406 d->devinfo = devinfo;
407 d->reccount = 0;
408 d->playcount = 0;
409 d->pvchancount = 0;
410 d->rvchancount = 0;
411 d->pvchanrate = 0;
412 d->pvchanformat = 0;
413 d->rvchanrate = 0;
414 d->rvchanformat = 0;
415 d->p_unr = new_unrhdr(0, INT_MAX, NULL);
416 d->vp_unr = new_unrhdr(0, INT_MAX, NULL);
417 d->r_unr = new_unrhdr(0, INT_MAX, NULL);
418 d->vr_unr = new_unrhdr(0, INT_MAX, NULL);
419
420 CHN_INIT(d, channels.pcm);
421 CHN_INIT(d, channels.pcm.busy);
422 CHN_INIT(d, channels.pcm.opened);
423 CHN_INIT(d, channels.pcm.primary);
424 }
425
426 int
pcm_register(device_t dev,char * str)427 pcm_register(device_t dev, char *str)
428 {
429 struct snddev_info *d = device_get_softc(dev);
430
431 /* should only be called once */
432 if (d->flags & SD_F_REGISTERED)
433 return (EINVAL);
434
435 if (d->playcount == 0 || d->reccount == 0)
436 d->flags |= SD_F_SIMPLEX;
437 if (d->playcount > 0)
438 d->flags |= SD_F_PVCHANS;
439 if (d->reccount > 0)
440 d->flags |= SD_F_RVCHANS;
441
442 strlcpy(d->status, str, SND_STATUSLEN);
443
444 /* Done, we're ready.. */
445 d->flags |= SD_F_REGISTERED;
446
447 /*
448 * Create all sysctls once SD_F_REGISTERED is set else
449 * tunable sysctls won't work:
450 */
451 pcm_sysinit(dev);
452
453 if (snd_unit_auto < 0)
454 snd_unit_auto = (snd_unit < 0) ? 1 : 0;
455 if (snd_unit < 0 || snd_unit_auto > 1)
456 snd_unit = device_get_unit(dev);
457 else if (snd_unit_auto == 1)
458 snd_unit = pcm_best_unit(snd_unit);
459
460 sndstat_register(dev, d->status);
461
462 return (dsp_make_dev(dev));
463 }
464
465 int
pcm_unregister(device_t dev)466 pcm_unregister(device_t dev)
467 {
468 struct snddev_info *d;
469
470 d = device_get_softc(dev);
471
472 if (!PCM_ALIVE(d)) {
473 device_printf(dev, "unregister: device not configured\n");
474 return (0);
475 }
476
477 PCM_LOCK(d);
478 PCM_WAIT(d);
479
480 d->flags &= ~SD_F_REGISTERED;
481
482 PCM_ACQUIRE(d);
483 PCM_UNLOCK(d);
484
485 pcm_killchans(d);
486
487 PCM_RELEASE_QUICK(d);
488
489 if (d->play_sysctl_tree != NULL) {
490 sysctl_ctx_free(&d->play_sysctl_ctx);
491 d->play_sysctl_tree = NULL;
492 }
493 if (d->rec_sysctl_tree != NULL) {
494 sysctl_ctx_free(&d->rec_sysctl_ctx);
495 d->rec_sysctl_tree = NULL;
496 }
497
498 sndstat_unregister(dev);
499 mixer_uninit(dev);
500 dsp_destroy_dev(dev);
501
502 cv_destroy(&d->cv);
503 snd_mtxfree(d->lock);
504
505 if (snd_unit == device_get_unit(dev)) {
506 snd_unit = pcm_best_unit(-1);
507 if (snd_unit_auto == 0)
508 snd_unit_auto = 1;
509 }
510
511 return (0);
512 }
513
514 /************************************************************************/
515
516 /**
517 * @brief Handle OSSv4 SNDCTL_SYSINFO ioctl.
518 *
519 * @param si Pointer to oss_sysinfo struct where information about the
520 * sound subsystem will be written/copied.
521 *
522 * This routine returns information about the sound system, such as the
523 * current OSS version, number of audio, MIDI, and mixer drivers, etc.
524 * Also includes a bitmask showing which of the above types of devices
525 * are open (busy).
526 *
527 * @note
528 * Calling threads must not hold any snddev_info or pcm_channel locks.
529 *
530 * @author Ryan Beasley <ryanb@FreeBSD.org>
531 */
532 void
sound_oss_sysinfo(oss_sysinfo * si)533 sound_oss_sysinfo(oss_sysinfo *si)
534 {
535 static char si_product[] = "FreeBSD native OSS ABI";
536 static char si_version[] = __XSTRING(__FreeBSD_version);
537 static char si_license[] = "BSD";
538 static int intnbits = sizeof(int) * 8; /* Better suited as macro?
539 Must pester a C guru. */
540
541 struct snddev_info *d;
542 struct pcm_channel *c;
543 int j;
544 size_t i;
545
546 strlcpy(si->product, si_product, sizeof(si->product));
547 strlcpy(si->version, si_version, sizeof(si->version));
548 si->versionnum = SOUND_VERSION;
549 strlcpy(si->license, si_license, sizeof(si->license));
550
551 /*
552 * Iterate over PCM devices and their channels, gathering up data
553 * for the numaudioengines and openedaudio fields.
554 */
555 si->numaudioengines = 0;
556 bzero((void *)&si->openedaudio, sizeof(si->openedaudio));
557
558 j = 0;
559
560 for (i = 0; pcm_devclass != NULL &&
561 i < devclass_get_maxunit(pcm_devclass); i++) {
562 d = devclass_get_softc(pcm_devclass, i);
563 if (!PCM_REGISTERED(d))
564 continue;
565
566 /* XXX Need Giant magic entry ??? */
567
568 /* See note in function's docblock */
569 PCM_UNLOCKASSERT(d);
570 PCM_LOCK(d);
571
572 si->numaudioengines += PCM_CHANCOUNT(d);
573
574 CHN_FOREACH(c, d, channels.pcm) {
575 CHN_UNLOCKASSERT(c);
576 CHN_LOCK(c);
577 if (c->flags & CHN_F_BUSY)
578 si->openedaudio[j / intnbits] |=
579 (1 << (j % intnbits));
580 CHN_UNLOCK(c);
581 j++;
582 }
583
584 PCM_UNLOCK(d);
585 }
586
587 si->numsynths = 0; /* OSSv4 docs: this field is obsolete */
588 /**
589 * @todo Collect num{midis,timers}.
590 *
591 * Need access to sound/midi/midi.c::midistat_lock in order
592 * to safely touch midi_devices and get a head count of, well,
593 * MIDI devices. midistat_lock is a global static (i.e., local to
594 * midi.c), but midi_devices is a regular global; should the mutex
595 * be publicized, or is there another way to get this information?
596 *
597 * NB: MIDI/sequencer stuff is currently on hold.
598 */
599 si->nummidis = 0;
600 si->numtimers = 0;
601 /*
602 * Set this to the maximum unit number so that applications will not
603 * break if they try to loop through all mixers and some of them are
604 * not available.
605 */
606 si->nummixers = devclass_get_maxunit(pcm_devclass);
607 si->numcards = devclass_get_maxunit(pcm_devclass);
608 si->numaudios = devclass_get_maxunit(pcm_devclass);
609 /* OSSv4 docs: Intended only for test apps; API doesn't
610 really have much of a concept of cards. Shouldn't be
611 used by applications. */
612
613 /**
614 * @todo Fill in "busy devices" fields.
615 *
616 * si->openedmidi = " MIDI devices
617 */
618 bzero((void *)&si->openedmidi, sizeof(si->openedmidi));
619
620 /*
621 * Si->filler is a reserved array, but according to docs each
622 * element should be set to -1.
623 */
624 for (i = 0; i < nitems(si->filler); i++)
625 si->filler[i] = -1;
626 }
627
628 int
sound_oss_card_info(oss_card_info * si)629 sound_oss_card_info(oss_card_info *si)
630 {
631 struct snddev_info *d;
632 int i;
633
634 for (i = 0; pcm_devclass != NULL &&
635 i < devclass_get_maxunit(pcm_devclass); i++) {
636 d = devclass_get_softc(pcm_devclass, i);
637 if (i != si->card)
638 continue;
639
640 if (!PCM_REGISTERED(d)) {
641 snprintf(si->shortname, sizeof(si->shortname),
642 "pcm%d (n/a)", i);
643 strlcpy(si->longname, "Device unavailable",
644 sizeof(si->longname));
645 si->hw_info[0] = '\0';
646 si->intr_count = si->ack_count = 0;
647 } else {
648 PCM_UNLOCKASSERT(d);
649 PCM_LOCK(d);
650
651 strlcpy(si->shortname, device_get_nameunit(d->dev),
652 sizeof(si->shortname));
653 strlcpy(si->longname, device_get_desc(d->dev),
654 sizeof(si->longname));
655 strlcpy(si->hw_info, d->status, sizeof(si->hw_info));
656 si->intr_count = si->ack_count = 0;
657
658 PCM_UNLOCK(d);
659 }
660
661 return (0);
662 }
663 return (ENXIO);
664 }
665
666 /************************************************************************/
667
668 static void
sound_global_init(void)669 sound_global_init(void)
670 {
671 if (snd_verbose < 0 || snd_verbose > 4)
672 snd_verbose = 1;
673
674 if (snd_unit < 0)
675 snd_unit = -1;
676
677 snd_vchans_enable = true;
678
679 if (chn_latency < CHN_LATENCY_MIN ||
680 chn_latency > CHN_LATENCY_MAX)
681 chn_latency = CHN_LATENCY_DEFAULT;
682
683 if (chn_latency_profile < CHN_LATENCY_PROFILE_MIN ||
684 chn_latency_profile > CHN_LATENCY_PROFILE_MAX)
685 chn_latency_profile = CHN_LATENCY_PROFILE_DEFAULT;
686
687 if (feeder_rate_min < FEEDRATE_MIN ||
688 feeder_rate_max < FEEDRATE_MIN ||
689 feeder_rate_min > FEEDRATE_MAX ||
690 feeder_rate_max > FEEDRATE_MAX ||
691 !(feeder_rate_min < feeder_rate_max)) {
692 feeder_rate_min = FEEDRATE_RATEMIN;
693 feeder_rate_max = FEEDRATE_RATEMAX;
694 }
695
696 if (feeder_rate_round < FEEDRATE_ROUNDHZ_MIN ||
697 feeder_rate_round > FEEDRATE_ROUNDHZ_MAX)
698 feeder_rate_round = FEEDRATE_ROUNDHZ;
699
700 if (bootverbose)
701 printf("%s: snd_unit=%d snd_vchans_enable=%d "
702 "latency=%d "
703 "feeder_rate_min=%d feeder_rate_max=%d "
704 "feeder_rate_round=%d\n",
705 __func__, snd_unit, snd_vchans_enable,
706 chn_latency,
707 feeder_rate_min, feeder_rate_max,
708 feeder_rate_round);
709 }
710
711 static int
sound_modevent(module_t mod,int type,void * data)712 sound_modevent(module_t mod, int type, void *data)
713 {
714 int ret;
715
716 ret = 0;
717 switch (type) {
718 case MOD_LOAD:
719 pcm_devclass = devclass_create("pcm");
720 pcmsg_unrhdr = new_unrhdr(1, INT_MAX, NULL);
721 sound_global_init();
722 break;
723 case MOD_UNLOAD:
724 if (pcmsg_unrhdr != NULL) {
725 delete_unrhdr(pcmsg_unrhdr);
726 pcmsg_unrhdr = NULL;
727 }
728 break;
729 case MOD_SHUTDOWN:
730 break;
731 default:
732 ret = ENOTSUP;
733 }
734
735 return ret;
736 }
737
738 DEV_MODULE(sound, sound_modevent, NULL);
739 MODULE_VERSION(sound, SOUND_MODVER);
740