1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifdef HAVE_KERNEL_OPTION_HEADERS 33 #include "opt_snd.h" 34 #endif 35 36 #include <dev/sound/pcm/sound.h> 37 #include <dev/sound/pcm/ac97.h> 38 #include <dev/sound/pcm/vchan.h> 39 #include <dev/sound/pcm/dsp.h> 40 #include <dev/sound/pcm/sndstat.h> 41 #include <dev/sound/version.h> 42 #include <sys/limits.h> 43 #include <sys/sysctl.h> 44 45 #include "feeder_if.h" 46 47 SND_DECLARE_FILE("$FreeBSD$"); 48 49 devclass_t pcm_devclass; 50 51 int pcm_veto_load = 1; 52 53 int snd_unit = -1; 54 55 static int snd_unit_auto = -1; 56 SYSCTL_INT(_hw_snd, OID_AUTO, default_auto, CTLFLAG_RWTUN, 57 &snd_unit_auto, 0, "assign default unit to a newly attached device"); 58 59 int snd_maxautovchans = 16; 60 61 SYSCTL_NODE(_hw, OID_AUTO, snd, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 62 "Sound driver"); 63 64 static void pcm_sysinit(device_t); 65 66 /* 67 * XXX I've had enough with people not telling proper version/arch 68 * while reporting problems, not after 387397913213th questions/requests. 69 */ 70 static char snd_driver_version[] = 71 __XSTRING(SND_DRV_VERSION)"/"MACHINE_ARCH; 72 SYSCTL_STRING(_hw_snd, OID_AUTO, version, CTLFLAG_RD, &snd_driver_version, 73 0, "driver version/arch"); 74 75 /** 76 * @brief Unit number allocator for syncgroup IDs 77 */ 78 struct unrhdr *pcmsg_unrhdr = NULL; 79 80 static int 81 sndstat_prepare_pcm(SNDSTAT_PREPARE_PCM_ARGS) 82 { 83 SNDSTAT_PREPARE_PCM_BEGIN(); 84 SNDSTAT_PREPARE_PCM_END(); 85 } 86 87 void * 88 snd_mtxcreate(const char *desc, const char *type) 89 { 90 struct mtx *m; 91 92 m = malloc(sizeof(*m), M_DEVBUF, M_WAITOK | M_ZERO); 93 mtx_init(m, desc, type, MTX_DEF); 94 return m; 95 } 96 97 void 98 snd_mtxfree(void *m) 99 { 100 struct mtx *mtx = m; 101 102 mtx_destroy(mtx); 103 free(mtx, M_DEVBUF); 104 } 105 106 void 107 snd_mtxassert(void *m) 108 { 109 #ifdef INVARIANTS 110 struct mtx *mtx = m; 111 112 mtx_assert(mtx, MA_OWNED); 113 #endif 114 } 115 116 int 117 snd_setup_intr(device_t dev, struct resource *res, int flags, driver_intr_t hand, void *param, void **cookiep) 118 { 119 struct snddev_info *d; 120 121 flags &= INTR_MPSAFE; 122 flags |= INTR_TYPE_AV; 123 d = device_get_softc(dev); 124 if (d != NULL && (flags & INTR_MPSAFE)) 125 d->flags |= SD_F_MPSAFE; 126 127 return bus_setup_intr(dev, res, flags, NULL, hand, param, cookiep); 128 } 129 130 static void 131 pcm_clonereset(struct snddev_info *d) 132 { 133 int cmax; 134 135 PCM_BUSYASSERT(d); 136 137 cmax = d->playcount + d->reccount - 1; 138 if (d->pvchancount > 0) 139 cmax += max(d->pvchancount, snd_maxautovchans) - 1; 140 if (d->rvchancount > 0) 141 cmax += max(d->rvchancount, snd_maxautovchans) - 1; 142 if (cmax > PCMMAXCLONE) 143 cmax = PCMMAXCLONE; 144 (void)snd_clone_gc(d->clones); 145 (void)snd_clone_setmaxunit(d->clones, cmax); 146 } 147 148 int 149 pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num) 150 { 151 struct pcm_channel *c, *ch, *nch; 152 struct pcmchan_caps *caps; 153 int i, err, vcnt; 154 155 PCM_BUSYASSERT(d); 156 157 if ((direction == PCMDIR_PLAY && d->playcount < 1) || 158 (direction == PCMDIR_REC && d->reccount < 1)) 159 return (ENODEV); 160 161 if (!(d->flags & SD_F_AUTOVCHAN)) 162 return (EINVAL); 163 164 if (newcnt < 0 || newcnt > SND_MAXVCHANS) 165 return (E2BIG); 166 167 if (direction == PCMDIR_PLAY) 168 vcnt = d->pvchancount; 169 else if (direction == PCMDIR_REC) 170 vcnt = d->rvchancount; 171 else 172 return (EINVAL); 173 174 if (newcnt > vcnt) { 175 KASSERT(num == -1 || 176 (num >= 0 && num < SND_MAXVCHANS && (newcnt - 1) == vcnt), 177 ("bogus vchan_create() request num=%d newcnt=%d vcnt=%d", 178 num, newcnt, vcnt)); 179 /* add new vchans - find a parent channel first */ 180 ch = NULL; 181 CHN_FOREACH(c, d, channels.pcm) { 182 CHN_LOCK(c); 183 if (c->direction == direction && 184 ((c->flags & CHN_F_HAS_VCHAN) || (vcnt == 0 && 185 c->refcount < 1 && 186 !(c->flags & (CHN_F_BUSY | CHN_F_VIRTUAL))))) { 187 /* 188 * Reuse hw channel with vchans already 189 * created. 190 */ 191 if (c->flags & CHN_F_HAS_VCHAN) { 192 ch = c; 193 break; 194 } 195 /* 196 * No vchans ever created, look for 197 * channels with supported formats. 198 */ 199 caps = chn_getcaps(c); 200 if (caps == NULL) { 201 CHN_UNLOCK(c); 202 continue; 203 } 204 for (i = 0; caps->fmtlist[i] != 0; i++) { 205 if (caps->fmtlist[i] & AFMT_CONVERTIBLE) 206 break; 207 } 208 if (caps->fmtlist[i] != 0) { 209 ch = c; 210 break; 211 } 212 } 213 CHN_UNLOCK(c); 214 } 215 if (ch == NULL) 216 return (EBUSY); 217 ch->flags |= CHN_F_BUSY; 218 err = 0; 219 while (err == 0 && newcnt > vcnt) { 220 err = vchan_create(ch, num); 221 if (err == 0) 222 vcnt++; 223 else if (err == E2BIG && newcnt > vcnt) 224 device_printf(d->dev, 225 "%s: err=%d Maximum channel reached.\n", 226 __func__, err); 227 } 228 if (vcnt == 0) 229 ch->flags &= ~CHN_F_BUSY; 230 CHN_UNLOCK(ch); 231 if (err != 0) 232 return (err); 233 else 234 pcm_clonereset(d); 235 } else if (newcnt < vcnt) { 236 KASSERT(num == -1, 237 ("bogus vchan_destroy() request num=%d", num)); 238 CHN_FOREACH(c, d, channels.pcm) { 239 CHN_LOCK(c); 240 if (c->direction != direction || 241 CHN_EMPTY(c, children) || 242 !(c->flags & CHN_F_HAS_VCHAN)) { 243 CHN_UNLOCK(c); 244 continue; 245 } 246 CHN_FOREACH_SAFE(ch, c, nch, children) { 247 CHN_LOCK(ch); 248 if (vcnt == 1 && c->refcount > 0) { 249 CHN_UNLOCK(ch); 250 break; 251 } 252 if (!(ch->flags & CHN_F_BUSY) && 253 ch->refcount < 1) { 254 err = vchan_destroy(ch); 255 if (err == 0) 256 vcnt--; 257 } else 258 CHN_UNLOCK(ch); 259 if (vcnt == newcnt) 260 break; 261 } 262 CHN_UNLOCK(c); 263 break; 264 } 265 pcm_clonereset(d); 266 } 267 268 return (0); 269 } 270 271 /* return error status and a locked channel */ 272 int 273 pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, 274 pid_t pid, char *comm, int devunit) 275 { 276 struct pcm_channel *c; 277 int err, vchancount, vchan_num; 278 279 KASSERT(d != NULL && ch != NULL && (devunit == -1 || 280 !(devunit & ~(SND_U_MASK | SND_D_MASK | SND_C_MASK))) && 281 (direction == PCMDIR_PLAY || direction == PCMDIR_REC), 282 ("%s(): invalid d=%p ch=%p direction=%d pid=%d devunit=%d", 283 __func__, d, ch, direction, pid, devunit)); 284 PCM_BUSYASSERT(d); 285 286 /* Double check again. */ 287 if (devunit != -1) { 288 switch (snd_unit2d(devunit)) { 289 case SND_DEV_DSPHW_PLAY: 290 case SND_DEV_DSPHW_VPLAY: 291 if (direction != PCMDIR_PLAY) 292 return (ENOTSUP); 293 break; 294 case SND_DEV_DSPHW_REC: 295 case SND_DEV_DSPHW_VREC: 296 if (direction != PCMDIR_REC) 297 return (ENOTSUP); 298 break; 299 default: 300 if (!(direction == PCMDIR_PLAY || 301 direction == PCMDIR_REC)) 302 return (ENOTSUP); 303 break; 304 } 305 } 306 307 *ch = NULL; 308 vchan_num = 0; 309 vchancount = (direction == PCMDIR_PLAY) ? d->pvchancount : 310 d->rvchancount; 311 312 retry_chnalloc: 313 err = ENOTSUP; 314 /* scan for a free channel */ 315 CHN_FOREACH(c, d, channels.pcm) { 316 CHN_LOCK(c); 317 if (devunit == -1 && c->direction == direction && 318 (c->flags & CHN_F_VIRTUAL)) { 319 if (vchancount < snd_maxautovchans && 320 vchan_num < CHN_CHAN(c)) { 321 CHN_UNLOCK(c); 322 goto vchan_alloc; 323 } 324 vchan_num++; 325 } 326 if (c->direction == direction && !(c->flags & CHN_F_BUSY) && 327 (devunit == -1 || devunit == -2 || c->unit == devunit)) { 328 c->flags |= CHN_F_BUSY; 329 c->pid = pid; 330 strlcpy(c->comm, (comm != NULL) ? comm : 331 CHN_COMM_UNKNOWN, sizeof(c->comm)); 332 *ch = c; 333 return (0); 334 } else if (c->unit == devunit) { 335 if (c->direction != direction) 336 err = ENOTSUP; 337 else if (c->flags & CHN_F_BUSY) 338 err = EBUSY; 339 else 340 err = EINVAL; 341 CHN_UNLOCK(c); 342 return (err); 343 } else if ((devunit == -1 || devunit == -2) && 344 c->direction == direction && (c->flags & CHN_F_BUSY)) 345 err = EBUSY; 346 CHN_UNLOCK(c); 347 } 348 349 if (devunit == -2) 350 return (err); 351 352 vchan_alloc: 353 /* no channel available */ 354 if (devunit == -1 || snd_unit2d(devunit) == SND_DEV_DSPHW_VPLAY || 355 snd_unit2d(devunit) == SND_DEV_DSPHW_VREC) { 356 if (!(vchancount > 0 && vchancount < snd_maxautovchans) && 357 (devunit == -1 || snd_unit2c(devunit) < snd_maxautovchans)) 358 return (err); 359 err = pcm_setvchans(d, direction, vchancount + 1, 360 (devunit == -1) ? -1 : snd_unit2c(devunit)); 361 if (err == 0) { 362 if (devunit == -1) 363 devunit = -2; 364 goto retry_chnalloc; 365 } 366 } 367 368 return (err); 369 } 370 371 /* release a locked channel and unlock it */ 372 int 373 pcm_chnrelease(struct pcm_channel *c) 374 { 375 PCM_BUSYASSERT(c->parentsnddev); 376 CHN_LOCKASSERT(c); 377 378 c->flags &= ~CHN_F_BUSY; 379 c->pid = -1; 380 strlcpy(c->comm, CHN_COMM_UNUSED, sizeof(c->comm)); 381 CHN_UNLOCK(c); 382 383 return (0); 384 } 385 386 int 387 pcm_chnref(struct pcm_channel *c, int ref) 388 { 389 PCM_BUSYASSERT(c->parentsnddev); 390 CHN_LOCKASSERT(c); 391 392 c->refcount += ref; 393 394 return (c->refcount); 395 } 396 397 int 398 pcm_inprog(struct snddev_info *d, int delta) 399 { 400 PCM_LOCKASSERT(d); 401 402 d->inprog += delta; 403 404 return (d->inprog); 405 } 406 407 static void 408 pcm_setmaxautovchans(struct snddev_info *d, int num) 409 { 410 PCM_BUSYASSERT(d); 411 412 if (num < 0) 413 return; 414 415 if (num >= 0 && d->pvchancount > num) 416 (void)pcm_setvchans(d, PCMDIR_PLAY, num, -1); 417 else if (num > 0 && d->pvchancount == 0) 418 (void)pcm_setvchans(d, PCMDIR_PLAY, 1, -1); 419 420 if (num >= 0 && d->rvchancount > num) 421 (void)pcm_setvchans(d, PCMDIR_REC, num, -1); 422 else if (num > 0 && d->rvchancount == 0) 423 (void)pcm_setvchans(d, PCMDIR_REC, 1, -1); 424 425 pcm_clonereset(d); 426 } 427 428 static int 429 sysctl_hw_snd_default_unit(SYSCTL_HANDLER_ARGS) 430 { 431 struct snddev_info *d; 432 int error, unit; 433 434 unit = snd_unit; 435 error = sysctl_handle_int(oidp, &unit, 0, req); 436 if (error == 0 && req->newptr != NULL) { 437 d = devclass_get_softc(pcm_devclass, unit); 438 if (!PCM_REGISTERED(d) || CHN_EMPTY(d, channels.pcm)) 439 return EINVAL; 440 snd_unit = unit; 441 snd_unit_auto = 0; 442 } 443 return (error); 444 } 445 /* XXX: do we need a way to let the user change the default unit? */ 446 SYSCTL_PROC(_hw_snd, OID_AUTO, default_unit, 447 CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_ANYBODY | CTLFLAG_NEEDGIANT, 0, 448 sizeof(int), sysctl_hw_snd_default_unit, "I", 449 "default sound device"); 450 451 static int 452 sysctl_hw_snd_maxautovchans(SYSCTL_HANDLER_ARGS) 453 { 454 struct snddev_info *d; 455 int i, v, error; 456 457 v = snd_maxautovchans; 458 error = sysctl_handle_int(oidp, &v, 0, req); 459 if (error == 0 && req->newptr != NULL) { 460 if (v < 0) 461 v = 0; 462 if (v > SND_MAXVCHANS) 463 v = SND_MAXVCHANS; 464 snd_maxautovchans = v; 465 for (i = 0; pcm_devclass != NULL && 466 i < devclass_get_maxunit(pcm_devclass); i++) { 467 d = devclass_get_softc(pcm_devclass, i); 468 if (!PCM_REGISTERED(d)) 469 continue; 470 PCM_ACQUIRE_QUICK(d); 471 pcm_setmaxautovchans(d, v); 472 PCM_RELEASE_QUICK(d); 473 } 474 } 475 return (error); 476 } 477 SYSCTL_PROC(_hw_snd, OID_AUTO, maxautovchans, 478 CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, 0, sizeof(int), 479 sysctl_hw_snd_maxautovchans, "I", 480 "maximum virtual channel"); 481 482 struct pcm_channel * 483 pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo) 484 { 485 struct pcm_channel *ch; 486 int direction, err, rpnum, *pnum, max; 487 int udc, device, chan; 488 char *dirs, *devname, buf[CHN_NAMELEN]; 489 490 PCM_BUSYASSERT(d); 491 PCM_LOCKASSERT(d); 492 KASSERT(num >= -1, ("invalid num=%d", num)); 493 494 495 switch (dir) { 496 case PCMDIR_PLAY: 497 dirs = "play"; 498 direction = PCMDIR_PLAY; 499 pnum = &d->playcount; 500 device = SND_DEV_DSPHW_PLAY; 501 max = SND_MAXHWCHAN; 502 break; 503 case PCMDIR_PLAY_VIRTUAL: 504 dirs = "virtual"; 505 direction = PCMDIR_PLAY; 506 pnum = &d->pvchancount; 507 device = SND_DEV_DSPHW_VPLAY; 508 max = SND_MAXVCHANS; 509 break; 510 case PCMDIR_REC: 511 dirs = "record"; 512 direction = PCMDIR_REC; 513 pnum = &d->reccount; 514 device = SND_DEV_DSPHW_REC; 515 max = SND_MAXHWCHAN; 516 break; 517 case PCMDIR_REC_VIRTUAL: 518 dirs = "virtual"; 519 direction = PCMDIR_REC; 520 pnum = &d->rvchancount; 521 device = SND_DEV_DSPHW_VREC; 522 max = SND_MAXVCHANS; 523 break; 524 default: 525 return (NULL); 526 } 527 528 chan = (num == -1) ? 0 : num; 529 530 if (*pnum >= max || chan >= max) 531 return (NULL); 532 533 rpnum = 0; 534 535 CHN_FOREACH(ch, d, channels.pcm) { 536 if (CHN_DEV(ch) != device) 537 continue; 538 if (chan == CHN_CHAN(ch)) { 539 if (num != -1) { 540 device_printf(d->dev, 541 "channel num=%d allocated!\n", chan); 542 return (NULL); 543 } 544 chan++; 545 if (chan >= max) { 546 device_printf(d->dev, 547 "chan=%d > %d\n", chan, max); 548 return (NULL); 549 } 550 } 551 rpnum++; 552 } 553 554 if (*pnum != rpnum) { 555 device_printf(d->dev, 556 "%s(): WARNING: pnum screwed : dirs=%s pnum=%d rpnum=%d\n", 557 __func__, dirs, *pnum, rpnum); 558 return (NULL); 559 } 560 561 udc = snd_mkunit(device_get_unit(d->dev), device, chan); 562 devname = dsp_unit2name(buf, sizeof(buf), udc); 563 564 if (devname == NULL) { 565 device_printf(d->dev, 566 "Failed to query device name udc=0x%08x\n", udc); 567 return (NULL); 568 } 569 570 PCM_UNLOCK(d); 571 ch = malloc(sizeof(*ch), M_DEVBUF, M_WAITOK | M_ZERO); 572 ch->methods = kobj_create(cls, M_DEVBUF, M_WAITOK | M_ZERO); 573 ch->unit = udc; 574 ch->pid = -1; 575 strlcpy(ch->comm, CHN_COMM_UNUSED, sizeof(ch->comm)); 576 ch->parentsnddev = d; 577 ch->parentchannel = parent; 578 ch->dev = d->dev; 579 ch->trigger = PCMTRIG_STOP; 580 snprintf(ch->name, sizeof(ch->name), "%s:%s:%s", 581 device_get_nameunit(ch->dev), dirs, devname); 582 583 err = chn_init(ch, devinfo, dir, direction); 584 PCM_LOCK(d); 585 if (err) { 586 device_printf(d->dev, "chn_init(%s) failed: err = %d\n", 587 ch->name, err); 588 kobj_delete(ch->methods, M_DEVBUF); 589 free(ch, M_DEVBUF); 590 return (NULL); 591 } 592 593 return (ch); 594 } 595 596 int 597 pcm_chn_destroy(struct pcm_channel *ch) 598 { 599 struct snddev_info *d; 600 int err; 601 602 d = ch->parentsnddev; 603 PCM_BUSYASSERT(d); 604 605 err = chn_kill(ch); 606 if (err) { 607 device_printf(ch->dev, "chn_kill(%s) failed, err = %d\n", 608 ch->name, err); 609 return (err); 610 } 611 612 kobj_delete(ch->methods, M_DEVBUF); 613 free(ch, M_DEVBUF); 614 615 return (0); 616 } 617 618 int 619 pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch) 620 { 621 PCM_BUSYASSERT(d); 622 PCM_LOCKASSERT(d); 623 KASSERT(ch != NULL && (ch->direction == PCMDIR_PLAY || 624 ch->direction == PCMDIR_REC), ("Invalid pcm channel")); 625 626 CHN_INSERT_SORT_ASCEND(d, ch, channels.pcm); 627 628 switch (CHN_DEV(ch)) { 629 case SND_DEV_DSPHW_PLAY: 630 d->playcount++; 631 break; 632 case SND_DEV_DSPHW_VPLAY: 633 d->pvchancount++; 634 break; 635 case SND_DEV_DSPHW_REC: 636 d->reccount++; 637 break; 638 case SND_DEV_DSPHW_VREC: 639 d->rvchancount++; 640 break; 641 default: 642 break; 643 } 644 645 d->devcount++; 646 647 return (0); 648 } 649 650 int 651 pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch) 652 { 653 struct pcm_channel *tmp; 654 655 PCM_BUSYASSERT(d); 656 PCM_LOCKASSERT(d); 657 658 tmp = NULL; 659 660 CHN_FOREACH(tmp, d, channels.pcm) { 661 if (tmp == ch) 662 break; 663 } 664 665 if (tmp != ch) 666 return (EINVAL); 667 668 CHN_REMOVE(d, ch, channels.pcm); 669 670 switch (CHN_DEV(ch)) { 671 case SND_DEV_DSPHW_PLAY: 672 d->playcount--; 673 break; 674 case SND_DEV_DSPHW_VPLAY: 675 d->pvchancount--; 676 break; 677 case SND_DEV_DSPHW_REC: 678 d->reccount--; 679 break; 680 case SND_DEV_DSPHW_VREC: 681 d->rvchancount--; 682 break; 683 default: 684 break; 685 } 686 687 d->devcount--; 688 689 return (0); 690 } 691 692 int 693 pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo) 694 { 695 struct snddev_info *d = device_get_softc(dev); 696 struct pcm_channel *ch; 697 int err; 698 699 PCM_BUSYASSERT(d); 700 701 PCM_LOCK(d); 702 ch = pcm_chn_create(d, NULL, cls, dir, -1, devinfo); 703 if (!ch) { 704 device_printf(d->dev, "pcm_chn_create(%s, %d, %p) failed\n", 705 cls->name, dir, devinfo); 706 PCM_UNLOCK(d); 707 return (ENODEV); 708 } 709 710 err = pcm_chn_add(d, ch); 711 PCM_UNLOCK(d); 712 if (err) { 713 device_printf(d->dev, "pcm_chn_add(%s) failed, err=%d\n", 714 ch->name, err); 715 pcm_chn_destroy(ch); 716 } 717 718 return (err); 719 } 720 721 static int 722 pcm_killchan(device_t dev) 723 { 724 struct snddev_info *d = device_get_softc(dev); 725 struct pcm_channel *ch; 726 int error; 727 728 PCM_BUSYASSERT(d); 729 730 ch = CHN_FIRST(d, channels.pcm); 731 732 PCM_LOCK(d); 733 error = pcm_chn_remove(d, ch); 734 PCM_UNLOCK(d); 735 if (error) 736 return (error); 737 return (pcm_chn_destroy(ch)); 738 } 739 740 static int 741 pcm_best_unit(int old) 742 { 743 struct snddev_info *d; 744 int i, best, bestprio, prio; 745 746 best = -1; 747 bestprio = -100; 748 for (i = 0; pcm_devclass != NULL && 749 i < devclass_get_maxunit(pcm_devclass); i++) { 750 d = devclass_get_softc(pcm_devclass, i); 751 if (!PCM_REGISTERED(d)) 752 continue; 753 prio = 0; 754 if (d->playcount == 0) 755 prio -= 10; 756 if (d->reccount == 0) 757 prio -= 2; 758 if (prio > bestprio || (prio == bestprio && i == old)) { 759 best = i; 760 bestprio = prio; 761 } 762 } 763 return (best); 764 } 765 766 int 767 pcm_setstatus(device_t dev, char *str) 768 { 769 struct snddev_info *d = device_get_softc(dev); 770 771 /* should only be called once */ 772 if (d->flags & SD_F_REGISTERED) 773 return (EINVAL); 774 775 PCM_BUSYASSERT(d); 776 777 if (d->playcount == 0 || d->reccount == 0) 778 d->flags |= SD_F_SIMPLEX; 779 780 if (d->playcount > 0 || d->reccount > 0) 781 d->flags |= SD_F_AUTOVCHAN; 782 783 pcm_setmaxautovchans(d, snd_maxautovchans); 784 785 strlcpy(d->status, str, SND_STATUSLEN); 786 787 PCM_LOCK(d); 788 789 /* Last stage, enable cloning. */ 790 if (d->clones != NULL) 791 (void)snd_clone_enable(d->clones); 792 793 /* Done, we're ready.. */ 794 d->flags |= SD_F_REGISTERED; 795 796 PCM_RELEASE(d); 797 798 PCM_UNLOCK(d); 799 800 /* 801 * Create all sysctls once SD_F_REGISTERED is set else 802 * tunable sysctls won't work: 803 */ 804 pcm_sysinit(dev); 805 806 if (snd_unit_auto < 0) 807 snd_unit_auto = (snd_unit < 0) ? 1 : 0; 808 if (snd_unit < 0 || snd_unit_auto > 1) 809 snd_unit = device_get_unit(dev); 810 else if (snd_unit_auto == 1) 811 snd_unit = pcm_best_unit(snd_unit); 812 813 return (0); 814 } 815 816 uint32_t 817 pcm_getflags(device_t dev) 818 { 819 struct snddev_info *d = device_get_softc(dev); 820 821 return d->flags; 822 } 823 824 void 825 pcm_setflags(device_t dev, uint32_t val) 826 { 827 struct snddev_info *d = device_get_softc(dev); 828 829 d->flags = val; 830 } 831 832 void * 833 pcm_getdevinfo(device_t dev) 834 { 835 struct snddev_info *d = device_get_softc(dev); 836 837 return d->devinfo; 838 } 839 840 unsigned int 841 pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz) 842 { 843 struct snddev_info *d = device_get_softc(dev); 844 int sz, x; 845 846 sz = 0; 847 if (resource_int_value(device_get_name(dev), device_get_unit(dev), "buffersize", &sz) == 0) { 848 x = sz; 849 RANGE(sz, minbufsz, maxbufsz); 850 if (x != sz) 851 device_printf(dev, "'buffersize=%d' hint is out of range (%d-%d), using %d\n", x, minbufsz, maxbufsz, sz); 852 x = minbufsz; 853 while (x < sz) 854 x <<= 1; 855 if (x > sz) 856 x >>= 1; 857 if (x != sz) { 858 device_printf(dev, "'buffersize=%d' hint is not a power of 2, using %d\n", sz, x); 859 sz = x; 860 } 861 } else { 862 sz = deflt; 863 } 864 865 d->bufsz = sz; 866 867 return sz; 868 } 869 870 static int 871 sysctl_dev_pcm_bitperfect(SYSCTL_HANDLER_ARGS) 872 { 873 struct snddev_info *d; 874 int err, val; 875 876 d = oidp->oid_arg1; 877 if (!PCM_REGISTERED(d)) 878 return (ENODEV); 879 880 PCM_LOCK(d); 881 PCM_WAIT(d); 882 val = (d->flags & SD_F_BITPERFECT) ? 1 : 0; 883 PCM_ACQUIRE(d); 884 PCM_UNLOCK(d); 885 886 err = sysctl_handle_int(oidp, &val, 0, req); 887 888 if (err == 0 && req->newptr != NULL) { 889 if (!(val == 0 || val == 1)) { 890 PCM_RELEASE_QUICK(d); 891 return (EINVAL); 892 } 893 894 PCM_LOCK(d); 895 896 d->flags &= ~SD_F_BITPERFECT; 897 d->flags |= (val != 0) ? SD_F_BITPERFECT : 0; 898 899 PCM_RELEASE(d); 900 PCM_UNLOCK(d); 901 } else 902 PCM_RELEASE_QUICK(d); 903 904 return (err); 905 } 906 907 #ifdef SND_DEBUG 908 static int 909 sysctl_dev_pcm_clone_flags(SYSCTL_HANDLER_ARGS) 910 { 911 struct snddev_info *d; 912 uint32_t flags; 913 int err; 914 915 d = oidp->oid_arg1; 916 if (!PCM_REGISTERED(d) || d->clones == NULL) 917 return (ENODEV); 918 919 PCM_ACQUIRE_QUICK(d); 920 921 flags = snd_clone_getflags(d->clones); 922 err = sysctl_handle_int(oidp, &flags, 0, req); 923 924 if (err == 0 && req->newptr != NULL) { 925 if (flags & ~SND_CLONE_MASK) 926 err = EINVAL; 927 else 928 (void)snd_clone_setflags(d->clones, flags); 929 } 930 931 PCM_RELEASE_QUICK(d); 932 933 return (err); 934 } 935 936 static int 937 sysctl_dev_pcm_clone_deadline(SYSCTL_HANDLER_ARGS) 938 { 939 struct snddev_info *d; 940 int err, deadline; 941 942 d = oidp->oid_arg1; 943 if (!PCM_REGISTERED(d) || d->clones == NULL) 944 return (ENODEV); 945 946 PCM_ACQUIRE_QUICK(d); 947 948 deadline = snd_clone_getdeadline(d->clones); 949 err = sysctl_handle_int(oidp, &deadline, 0, req); 950 951 if (err == 0 && req->newptr != NULL) { 952 if (deadline < 0) 953 err = EINVAL; 954 else 955 (void)snd_clone_setdeadline(d->clones, deadline); 956 } 957 958 PCM_RELEASE_QUICK(d); 959 960 return (err); 961 } 962 963 static int 964 sysctl_dev_pcm_clone_gc(SYSCTL_HANDLER_ARGS) 965 { 966 struct snddev_info *d; 967 int err, val; 968 969 d = oidp->oid_arg1; 970 if (!PCM_REGISTERED(d) || d->clones == NULL) 971 return (ENODEV); 972 973 val = 0; 974 err = sysctl_handle_int(oidp, &val, 0, req); 975 976 if (err == 0 && req->newptr != NULL && val != 0) { 977 PCM_ACQUIRE_QUICK(d); 978 val = snd_clone_gc(d->clones); 979 PCM_RELEASE_QUICK(d); 980 if (bootverbose != 0 || snd_verbose > 3) 981 device_printf(d->dev, "clone gc: pruned=%d\n", val); 982 } 983 984 return (err); 985 } 986 987 static int 988 sysctl_hw_snd_clone_gc(SYSCTL_HANDLER_ARGS) 989 { 990 struct snddev_info *d; 991 int i, err, val; 992 993 val = 0; 994 err = sysctl_handle_int(oidp, &val, 0, req); 995 996 if (err == 0 && req->newptr != NULL && val != 0) { 997 for (i = 0; pcm_devclass != NULL && 998 i < devclass_get_maxunit(pcm_devclass); i++) { 999 d = devclass_get_softc(pcm_devclass, i); 1000 if (!PCM_REGISTERED(d) || d->clones == NULL) 1001 continue; 1002 PCM_ACQUIRE_QUICK(d); 1003 val = snd_clone_gc(d->clones); 1004 PCM_RELEASE_QUICK(d); 1005 if (bootverbose != 0 || snd_verbose > 3) 1006 device_printf(d->dev, "clone gc: pruned=%d\n", 1007 val); 1008 } 1009 } 1010 1011 return (err); 1012 } 1013 SYSCTL_PROC(_hw_snd, OID_AUTO, clone_gc, 1014 CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, 0, sizeof(int), 1015 sysctl_hw_snd_clone_gc, "I", 1016 "global clone garbage collector"); 1017 #endif 1018 1019 static void 1020 pcm_sysinit(device_t dev) 1021 { 1022 struct snddev_info *d = device_get_softc(dev); 1023 1024 /* XXX: an user should be able to set this with a control tool, the 1025 sysadmin then needs min+max sysctls for this */ 1026 SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev), 1027 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 1028 OID_AUTO, "buffersize", CTLFLAG_RD, &d->bufsz, 0, "allocated buffer size"); 1029 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 1030 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 1031 "bitperfect", CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, d, 1032 sizeof(d), sysctl_dev_pcm_bitperfect, "I", 1033 "bit-perfect playback/recording (0=disable, 1=enable)"); 1034 #ifdef SND_DEBUG 1035 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 1036 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 1037 "clone_flags", CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, 1038 d, sizeof(d), sysctl_dev_pcm_clone_flags, "IU", 1039 "clone flags"); 1040 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 1041 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 1042 "clone_deadline", CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, 1043 d, sizeof(d), sysctl_dev_pcm_clone_deadline, "I", 1044 "clone expiration deadline (ms)"); 1045 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 1046 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 1047 "clone_gc", 1048 CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NEEDGIANT, d, sizeof(d), 1049 sysctl_dev_pcm_clone_gc, "I", "clone garbage collector"); 1050 #endif 1051 if (d->flags & SD_F_AUTOVCHAN) 1052 vchan_initsys(dev); 1053 if (d->flags & SD_F_EQ) 1054 feeder_eq_initsys(dev); 1055 } 1056 1057 int 1058 pcm_register(device_t dev, void *devinfo, int numplay, int numrec) 1059 { 1060 struct snddev_info *d; 1061 int i; 1062 1063 if (pcm_veto_load) { 1064 device_printf(dev, "disabled due to an error while initialising: %d\n", pcm_veto_load); 1065 1066 return EINVAL; 1067 } 1068 1069 if (device_get_unit(dev) > PCMMAXUNIT) { 1070 device_printf(dev, "PCMMAXUNIT reached : unit=%d > %d\n", 1071 device_get_unit(dev), PCMMAXUNIT); 1072 device_printf(dev, 1073 "Use 'hw.snd.maxunit' tunable to raise the limit.\n"); 1074 return ENODEV; 1075 } 1076 1077 d = device_get_softc(dev); 1078 d->dev = dev; 1079 d->lock = snd_mtxcreate(device_get_nameunit(dev), "sound cdev"); 1080 cv_init(&d->cv, device_get_nameunit(dev)); 1081 PCM_ACQUIRE_QUICK(d); 1082 dsp_cdevinfo_init(d); 1083 #if 0 1084 /* 1085 * d->flags should be cleared by the allocator of the softc. 1086 * We cannot clear this field here because several devices set 1087 * this flag before calling pcm_register(). 1088 */ 1089 d->flags = 0; 1090 #endif 1091 i = 0; 1092 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 1093 "vpc", &i) != 0 || i != 0) 1094 d->flags |= SD_F_VPC; 1095 1096 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 1097 "bitperfect", &i) == 0 && i != 0) 1098 d->flags |= SD_F_BITPERFECT; 1099 1100 d->devinfo = devinfo; 1101 d->devcount = 0; 1102 d->reccount = 0; 1103 d->playcount = 0; 1104 d->pvchancount = 0; 1105 d->rvchancount = 0; 1106 d->pvchanrate = 0; 1107 d->pvchanformat = 0; 1108 d->rvchanrate = 0; 1109 d->rvchanformat = 0; 1110 d->inprog = 0; 1111 1112 /* 1113 * Create clone manager, disabled by default. Cloning will be 1114 * enabled during final stage of driver initialization through 1115 * pcm_setstatus(). 1116 */ 1117 d->clones = snd_clone_create(SND_U_MASK | SND_D_MASK, PCMMAXCLONE, 1118 SND_CLONE_DEADLINE_DEFAULT, SND_CLONE_WAITOK | 1119 SND_CLONE_GC_ENABLE | SND_CLONE_GC_UNREF | 1120 SND_CLONE_GC_LASTREF | SND_CLONE_GC_EXPIRED); 1121 1122 CHN_INIT(d, channels.pcm); 1123 CHN_INIT(d, channels.pcm.busy); 1124 CHN_INIT(d, channels.pcm.opened); 1125 1126 /* XXX This is incorrect, but lets play along for now. */ 1127 if ((numplay == 0 || numrec == 0) && numplay != numrec) 1128 d->flags |= SD_F_SIMPLEX; 1129 1130 sysctl_ctx_init(&d->play_sysctl_ctx); 1131 d->play_sysctl_tree = SYSCTL_ADD_NODE(&d->play_sysctl_ctx, 1132 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "play", 1133 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "playback channels node"); 1134 sysctl_ctx_init(&d->rec_sysctl_ctx); 1135 d->rec_sysctl_tree = SYSCTL_ADD_NODE(&d->rec_sysctl_ctx, 1136 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "rec", 1137 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "record channels node"); 1138 1139 if (numplay > 0 || numrec > 0) 1140 d->flags |= SD_F_AUTOVCHAN; 1141 1142 sndstat_register(dev, d->status, sndstat_prepare_pcm); 1143 1144 return 0; 1145 } 1146 1147 int 1148 pcm_unregister(device_t dev) 1149 { 1150 struct snddev_info *d; 1151 struct pcm_channel *ch; 1152 struct thread *td; 1153 1154 td = curthread; 1155 d = device_get_softc(dev); 1156 1157 if (!PCM_ALIVE(d)) { 1158 device_printf(dev, "unregister: device not configured\n"); 1159 return (0); 1160 } 1161 1162 PCM_LOCK(d); 1163 PCM_WAIT(d); 1164 1165 d->flags |= SD_F_DETACHING; 1166 1167 if (d->inprog != 0) { 1168 device_printf(dev, "unregister: operation in progress\n"); 1169 PCM_UNLOCK(d); 1170 return (EBUSY); 1171 } 1172 1173 PCM_ACQUIRE(d); 1174 PCM_UNLOCK(d); 1175 1176 CHN_FOREACH(ch, d, channels.pcm) { 1177 CHN_LOCK(ch); 1178 if (ch->refcount > 0) { 1179 device_printf(dev, 1180 "unregister: channel %s busy (pid %d)\n", 1181 ch->name, ch->pid); 1182 CHN_UNLOCK(ch); 1183 PCM_RELEASE_QUICK(d); 1184 return (EBUSY); 1185 } 1186 CHN_UNLOCK(ch); 1187 } 1188 1189 if (d->clones != NULL) { 1190 if (snd_clone_busy(d->clones) != 0) { 1191 device_printf(dev, "unregister: clone busy\n"); 1192 PCM_RELEASE_QUICK(d); 1193 return (EBUSY); 1194 } else { 1195 PCM_LOCK(d); 1196 (void)snd_clone_disable(d->clones); 1197 PCM_UNLOCK(d); 1198 } 1199 } 1200 1201 if (mixer_uninit(dev) == EBUSY) { 1202 device_printf(dev, "unregister: mixer busy\n"); 1203 PCM_LOCK(d); 1204 if (d->clones != NULL) 1205 (void)snd_clone_enable(d->clones); 1206 PCM_RELEASE(d); 1207 PCM_UNLOCK(d); 1208 return (EBUSY); 1209 } 1210 1211 /* remove /dev/sndstat entry first */ 1212 sndstat_unregister(dev); 1213 1214 PCM_LOCK(d); 1215 d->flags |= SD_F_DYING; 1216 d->flags &= ~SD_F_REGISTERED; 1217 PCM_UNLOCK(d); 1218 1219 /* 1220 * No lock being held, so this thing can be flushed without 1221 * stucking into devdrn oblivion. 1222 */ 1223 if (d->clones != NULL) { 1224 snd_clone_destroy(d->clones); 1225 d->clones = NULL; 1226 } 1227 1228 if (d->play_sysctl_tree != NULL) { 1229 sysctl_ctx_free(&d->play_sysctl_ctx); 1230 d->play_sysctl_tree = NULL; 1231 } 1232 if (d->rec_sysctl_tree != NULL) { 1233 sysctl_ctx_free(&d->rec_sysctl_ctx); 1234 d->rec_sysctl_tree = NULL; 1235 } 1236 1237 while (!CHN_EMPTY(d, channels.pcm)) 1238 pcm_killchan(dev); 1239 1240 dsp_cdevinfo_flush(d); 1241 1242 PCM_LOCK(d); 1243 PCM_RELEASE(d); 1244 cv_destroy(&d->cv); 1245 PCM_UNLOCK(d); 1246 snd_mtxfree(d->lock); 1247 1248 if (snd_unit == device_get_unit(dev)) { 1249 snd_unit = pcm_best_unit(-1); 1250 if (snd_unit_auto == 0) 1251 snd_unit_auto = 1; 1252 } 1253 1254 return (0); 1255 } 1256 1257 /************************************************************************/ 1258 1259 /** 1260 * @brief Handle OSSv4 SNDCTL_SYSINFO ioctl. 1261 * 1262 * @param si Pointer to oss_sysinfo struct where information about the 1263 * sound subsystem will be written/copied. 1264 * 1265 * This routine returns information about the sound system, such as the 1266 * current OSS version, number of audio, MIDI, and mixer drivers, etc. 1267 * Also includes a bitmask showing which of the above types of devices 1268 * are open (busy). 1269 * 1270 * @note 1271 * Calling threads must not hold any snddev_info or pcm_channel locks. 1272 * 1273 * @author Ryan Beasley <ryanb@FreeBSD.org> 1274 */ 1275 void 1276 sound_oss_sysinfo(oss_sysinfo *si) 1277 { 1278 static char si_product[] = "FreeBSD native OSS ABI"; 1279 static char si_version[] = __XSTRING(__FreeBSD_version); 1280 static char si_license[] = "BSD"; 1281 static int intnbits = sizeof(int) * 8; /* Better suited as macro? 1282 Must pester a C guru. */ 1283 1284 struct snddev_info *d; 1285 struct pcm_channel *c; 1286 int i, j, ncards; 1287 1288 ncards = 0; 1289 1290 strlcpy(si->product, si_product, sizeof(si->product)); 1291 strlcpy(si->version, si_version, sizeof(si->version)); 1292 si->versionnum = SOUND_VERSION; 1293 strlcpy(si->license, si_license, sizeof(si->license)); 1294 1295 /* 1296 * Iterate over PCM devices and their channels, gathering up data 1297 * for the numaudios, ncards, and openedaudio fields. 1298 */ 1299 si->numaudios = 0; 1300 bzero((void *)&si->openedaudio, sizeof(si->openedaudio)); 1301 1302 j = 0; 1303 1304 for (i = 0; pcm_devclass != NULL && 1305 i < devclass_get_maxunit(pcm_devclass); i++) { 1306 d = devclass_get_softc(pcm_devclass, i); 1307 if (!PCM_REGISTERED(d)) 1308 continue; 1309 1310 /* XXX Need Giant magic entry ??? */ 1311 1312 /* See note in function's docblock */ 1313 PCM_UNLOCKASSERT(d); 1314 PCM_LOCK(d); 1315 1316 si->numaudios += d->devcount; 1317 ++ncards; 1318 1319 CHN_FOREACH(c, d, channels.pcm) { 1320 CHN_UNLOCKASSERT(c); 1321 CHN_LOCK(c); 1322 if (c->flags & CHN_F_BUSY) 1323 si->openedaudio[j / intnbits] |= 1324 (1 << (j % intnbits)); 1325 CHN_UNLOCK(c); 1326 j++; 1327 } 1328 1329 PCM_UNLOCK(d); 1330 } 1331 si->numaudioengines = si->numaudios; 1332 1333 si->numsynths = 0; /* OSSv4 docs: this field is obsolete */ 1334 /** 1335 * @todo Collect num{midis,timers}. 1336 * 1337 * Need access to sound/midi/midi.c::midistat_lock in order 1338 * to safely touch midi_devices and get a head count of, well, 1339 * MIDI devices. midistat_lock is a global static (i.e., local to 1340 * midi.c), but midi_devices is a regular global; should the mutex 1341 * be publicized, or is there another way to get this information? 1342 * 1343 * NB: MIDI/sequencer stuff is currently on hold. 1344 */ 1345 si->nummidis = 0; 1346 si->numtimers = 0; 1347 si->nummixers = mixer_count; 1348 si->numcards = ncards; 1349 /* OSSv4 docs: Intended only for test apps; API doesn't 1350 really have much of a concept of cards. Shouldn't be 1351 used by applications. */ 1352 1353 /** 1354 * @todo Fill in "busy devices" fields. 1355 * 1356 * si->openedmidi = " MIDI devices 1357 */ 1358 bzero((void *)&si->openedmidi, sizeof(si->openedmidi)); 1359 1360 /* 1361 * Si->filler is a reserved array, but according to docs each 1362 * element should be set to -1. 1363 */ 1364 for (i = 0; i < sizeof(si->filler)/sizeof(si->filler[0]); i++) 1365 si->filler[i] = -1; 1366 } 1367 1368 int 1369 sound_oss_card_info(oss_card_info *si) 1370 { 1371 struct snddev_info *d; 1372 int i, ncards; 1373 1374 ncards = 0; 1375 1376 for (i = 0; pcm_devclass != NULL && 1377 i < devclass_get_maxunit(pcm_devclass); i++) { 1378 d = devclass_get_softc(pcm_devclass, i); 1379 if (!PCM_REGISTERED(d)) 1380 continue; 1381 1382 if (ncards++ != si->card) 1383 continue; 1384 1385 PCM_UNLOCKASSERT(d); 1386 PCM_LOCK(d); 1387 1388 strlcpy(si->shortname, device_get_nameunit(d->dev), 1389 sizeof(si->shortname)); 1390 strlcpy(si->longname, device_get_desc(d->dev), 1391 sizeof(si->longname)); 1392 strlcpy(si->hw_info, d->status, sizeof(si->hw_info)); 1393 si->intr_count = si->ack_count = 0; 1394 1395 PCM_UNLOCK(d); 1396 1397 return (0); 1398 } 1399 return (ENXIO); 1400 } 1401 1402 /************************************************************************/ 1403 1404 static int 1405 sound_modevent(module_t mod, int type, void *data) 1406 { 1407 int ret; 1408 #if 0 1409 return (midi_modevent(mod, type, data)); 1410 #else 1411 ret = 0; 1412 1413 switch(type) { 1414 case MOD_LOAD: 1415 pcmsg_unrhdr = new_unrhdr(1, INT_MAX, NULL); 1416 break; 1417 case MOD_UNLOAD: 1418 if (pcmsg_unrhdr != NULL) { 1419 delete_unrhdr(pcmsg_unrhdr); 1420 pcmsg_unrhdr = NULL; 1421 } 1422 break; 1423 case MOD_SHUTDOWN: 1424 break; 1425 default: 1426 ret = ENOTSUP; 1427 } 1428 1429 return ret; 1430 #endif 1431 } 1432 1433 DEV_MODULE(sound, sound_modevent, NULL); 1434 MODULE_VERSION(sound, SOUND_MODVER); 1435