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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pcm/dsp.c
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1 /*- 2 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 3 * Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006 4 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifdef HAVE_KERNEL_OPTION_HEADERS 30 #include "opt_snd.h" 31 #endif 32 33 #include <dev/sound/pcm/sound.h> 34 #include <sys/ctype.h> 35 #include <sys/sysent.h> 36 37 SND_DECLARE_FILE("$FreeBSD: releng/8.2/sys/dev/sound/pcm/dsp.c 205972 2010-03-31 08:03:49Z mav $"); 38 39 static int dsp_mmap_allow_prot_exec = 0; 40 SYSCTL_INT(_hw_snd, OID_AUTO, compat_linux_mmap, CTLFLAG_RW, 41 &dsp_mmap_allow_prot_exec, 0, 42 "linux mmap compatibility (-1=force disable 0=auto 1=force enable)"); 43 44 struct dsp_cdevinfo { 45 struct pcm_channel *rdch, *wrch; 46 struct pcm_channel *volch; 47 int busy, simplex; 48 TAILQ_ENTRY(dsp_cdevinfo) link; 49 }; 50 51 #define PCM_RDCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->rdch) 52 #define PCM_WRCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->wrch) 53 #define PCM_VOLCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->volch) 54 #define PCM_SIMPLEX(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->simplex) 55 56 #define DSP_CDEVINFO_CACHESIZE 8 57 58 #define DSP_REGISTERED(x, y) (PCM_REGISTERED(x) && \ 59 (y) != NULL && (y)->si_drv1 != NULL) 60 61 #define OLDPCM_IOCTL 62 63 static d_open_t dsp_open; 64 static d_close_t dsp_close; 65 static d_read_t dsp_read; 66 static d_write_t dsp_write; 67 static d_ioctl_t dsp_ioctl; 68 static d_poll_t dsp_poll; 69 static d_mmap_t dsp_mmap; 70 71 struct cdevsw dsp_cdevsw = { 72 .d_version = D_VERSION, 73 .d_open = dsp_open, 74 .d_close = dsp_close, 75 .d_read = dsp_read, 76 .d_write = dsp_write, 77 .d_ioctl = dsp_ioctl, 78 .d_poll = dsp_poll, 79 .d_mmap = dsp_mmap, 80 .d_name = "dsp", 81 }; 82 83 static eventhandler_tag dsp_ehtag = NULL; 84 static int dsp_umax = -1; 85 static int dsp_cmax = -1; 86 87 static int dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group); 88 static int dsp_oss_syncstart(int sg_id); 89 static int dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy); 90 static int dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled); 91 static int dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 92 static int dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 93 static int dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, int *mask); 94 #ifdef OSSV4_EXPERIMENT 95 static int dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 96 static int dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 97 static int dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 98 static int dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 99 static int dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name); 100 #endif 101 102 static struct snddev_info * 103 dsp_get_info(struct cdev *dev) 104 { 105 return (devclass_get_softc(pcm_devclass, PCMUNIT(dev))); 106 } 107 108 static uint32_t 109 dsp_get_flags(struct cdev *dev) 110 { 111 device_t bdev; 112 113 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 114 115 return ((bdev != NULL) ? pcm_getflags(bdev) : 0xffffffff); 116 } 117 118 static void 119 dsp_set_flags(struct cdev *dev, uint32_t flags) 120 { 121 device_t bdev; 122 123 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 124 125 if (bdev != NULL) 126 pcm_setflags(bdev, flags); 127 } 128 129 /* 130 * return the channels associated with an open device instance. 131 * lock channels specified. 132 */ 133 static int 134 getchns(struct cdev *dev, struct pcm_channel **rdch, struct pcm_channel **wrch, 135 uint32_t prio) 136 { 137 struct snddev_info *d; 138 struct pcm_channel *ch; 139 uint32_t flags; 140 141 if (PCM_SIMPLEX(dev) != 0) { 142 d = dsp_get_info(dev); 143 if (!PCM_REGISTERED(d)) 144 return (ENXIO); 145 PCM_LOCK(d); 146 PCM_WAIT(d); 147 PCM_ACQUIRE(d); 148 /* 149 * Note: order is important - 150 * pcm flags -> prio query flags -> wild guess 151 */ 152 ch = NULL; 153 flags = dsp_get_flags(dev); 154 if (flags & SD_F_PRIO_WR) { 155 ch = PCM_RDCH(dev); 156 PCM_RDCH(dev) = NULL; 157 } else if (flags & SD_F_PRIO_RD) { 158 ch = PCM_WRCH(dev); 159 PCM_WRCH(dev) = NULL; 160 } else if (prio & SD_F_PRIO_WR) { 161 ch = PCM_RDCH(dev); 162 PCM_RDCH(dev) = NULL; 163 flags |= SD_F_PRIO_WR; 164 } else if (prio & SD_F_PRIO_RD) { 165 ch = PCM_WRCH(dev); 166 PCM_WRCH(dev) = NULL; 167 flags |= SD_F_PRIO_RD; 168 } else if (PCM_WRCH(dev) != NULL) { 169 ch = PCM_RDCH(dev); 170 PCM_RDCH(dev) = NULL; 171 flags |= SD_F_PRIO_WR; 172 } else if (PCM_RDCH(dev) != NULL) { 173 ch = PCM_WRCH(dev); 174 PCM_WRCH(dev) = NULL; 175 flags |= SD_F_PRIO_RD; 176 } 177 PCM_SIMPLEX(dev) = 0; 178 dsp_set_flags(dev, flags); 179 if (ch != NULL) { 180 CHN_LOCK(ch); 181 pcm_chnref(ch, -1); 182 pcm_chnrelease(ch); 183 } 184 PCM_RELEASE(d); 185 PCM_UNLOCK(d); 186 } 187 188 *rdch = PCM_RDCH(dev); 189 *wrch = PCM_WRCH(dev); 190 191 if (*rdch != NULL && (prio & SD_F_PRIO_RD)) 192 CHN_LOCK(*rdch); 193 if (*wrch != NULL && (prio & SD_F_PRIO_WR)) 194 CHN_LOCK(*wrch); 195 196 return (0); 197 } 198 199 /* unlock specified channels */ 200 static void 201 relchns(struct cdev *dev, struct pcm_channel *rdch, struct pcm_channel *wrch, 202 uint32_t prio) 203 { 204 if (wrch != NULL && (prio & SD_F_PRIO_WR)) 205 CHN_UNLOCK(wrch); 206 if (rdch != NULL && (prio & SD_F_PRIO_RD)) 207 CHN_UNLOCK(rdch); 208 } 209 210 static void 211 dsp_cdevinfo_alloc(struct cdev *dev, 212 struct pcm_channel *rdch, struct pcm_channel *wrch, 213 struct pcm_channel *volch) 214 { 215 struct snddev_info *d; 216 struct dsp_cdevinfo *cdi; 217 int simplex; 218 219 d = dsp_get_info(dev); 220 221 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 == NULL && 222 ((rdch == NULL && wrch == NULL) || rdch != wrch), 223 ("bogus %s(), what are you trying to accomplish here?", __func__)); 224 PCM_BUSYASSERT(d); 225 PCM_LOCKASSERT(d); 226 227 simplex = (dsp_get_flags(dev) & SD_F_SIMPLEX) ? 1 : 0; 228 229 /* 230 * Scan for free instance entry and put it into the end of list. 231 * Create new one if necessary. 232 */ 233 TAILQ_FOREACH(cdi, &d->dsp_cdevinfo_pool, link) { 234 if (cdi->busy != 0) 235 break; 236 cdi->rdch = rdch; 237 cdi->wrch = wrch; 238 cdi->volch = volch; 239 cdi->simplex = simplex; 240 cdi->busy = 1; 241 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 242 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 243 dev->si_drv1 = cdi; 244 return; 245 } 246 PCM_UNLOCK(d); 247 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 248 PCM_LOCK(d); 249 cdi->rdch = rdch; 250 cdi->wrch = wrch; 251 cdi->volch = volch; 252 cdi->simplex = simplex; 253 cdi->busy = 1; 254 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 255 dev->si_drv1 = cdi; 256 } 257 258 static void 259 dsp_cdevinfo_free(struct cdev *dev) 260 { 261 struct snddev_info *d; 262 struct dsp_cdevinfo *cdi, *tmp; 263 uint32_t flags; 264 int i; 265 266 d = dsp_get_info(dev); 267 268 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 != NULL && 269 PCM_RDCH(dev) == NULL && PCM_WRCH(dev) == NULL && 270 PCM_VOLCH(dev) == NULL, 271 ("bogus %s(), what are you trying to accomplish here?", __func__)); 272 PCM_BUSYASSERT(d); 273 PCM_LOCKASSERT(d); 274 275 cdi = dev->si_drv1; 276 dev->si_drv1 = NULL; 277 cdi->rdch = NULL; 278 cdi->wrch = NULL; 279 cdi->volch = NULL; 280 cdi->simplex = 0; 281 cdi->busy = 0; 282 283 /* 284 * Once it is free, move it back to the beginning of list for 285 * faster new entry allocation. 286 */ 287 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 288 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 289 290 /* 291 * Scan the list, cache free entries up to DSP_CDEVINFO_CACHESIZE. 292 * Reset simplex flags. 293 */ 294 flags = dsp_get_flags(dev) & ~SD_F_PRIO_SET; 295 i = DSP_CDEVINFO_CACHESIZE; 296 TAILQ_FOREACH_SAFE(cdi, &d->dsp_cdevinfo_pool, link, tmp) { 297 if (cdi->busy != 0) { 298 if (cdi->simplex == 0) { 299 if (cdi->rdch != NULL) 300 flags |= SD_F_PRIO_RD; 301 if (cdi->wrch != NULL) 302 flags |= SD_F_PRIO_WR; 303 } 304 } else { 305 if (i == 0) { 306 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 307 free(cdi, M_DEVBUF); 308 } else 309 i--; 310 } 311 } 312 dsp_set_flags(dev, flags); 313 } 314 315 void 316 dsp_cdevinfo_init(struct snddev_info *d) 317 { 318 struct dsp_cdevinfo *cdi; 319 int i; 320 321 KASSERT(d != NULL, ("NULL snddev_info")); 322 PCM_BUSYASSERT(d); 323 PCM_UNLOCKASSERT(d); 324 325 TAILQ_INIT(&d->dsp_cdevinfo_pool); 326 for (i = 0; i < DSP_CDEVINFO_CACHESIZE; i++) { 327 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 328 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 329 } 330 } 331 332 void 333 dsp_cdevinfo_flush(struct snddev_info *d) 334 { 335 struct dsp_cdevinfo *cdi, *tmp; 336 337 KASSERT(d != NULL, ("NULL snddev_info")); 338 PCM_BUSYASSERT(d); 339 PCM_UNLOCKASSERT(d); 340 341 cdi = TAILQ_FIRST(&d->dsp_cdevinfo_pool); 342 while (cdi != NULL) { 343 tmp = TAILQ_NEXT(cdi, link); 344 free(cdi, M_DEVBUF); 345 cdi = tmp; 346 } 347 TAILQ_INIT(&d->dsp_cdevinfo_pool); 348 } 349 350 /* duplex / simplex cdev type */ 351 enum { 352 DSP_CDEV_TYPE_RDONLY, /* simplex read-only (record) */ 353 DSP_CDEV_TYPE_WRONLY, /* simplex write-only (play) */ 354 DSP_CDEV_TYPE_RDWR /* duplex read, write, or both */ 355 }; 356 357 enum { 358 DSP_CDEV_VOLCTL_NONE, 359 DSP_CDEV_VOLCTL_READ, 360 DSP_CDEV_VOLCTL_WRITE 361 }; 362 363 #define DSP_F_VALID(x) ((x) & (FREAD | FWRITE)) 364 #define DSP_F_DUPLEX(x) (((x) & (FREAD | FWRITE)) == (FREAD | FWRITE)) 365 #define DSP_F_SIMPLEX(x) (!DSP_F_DUPLEX(x)) 366 #define DSP_F_READ(x) ((x) & FREAD) 367 #define DSP_F_WRITE(x) ((x) & FWRITE) 368 369 static const struct { 370 int type; 371 char *name; 372 char *sep; 373 char *alias; 374 int use_sep; 375 int hw; 376 int max; 377 int volctl; 378 uint32_t fmt, spd; 379 int query; 380 } dsp_cdevs[] = { 381 { SND_DEV_DSP, "dsp", ".", NULL, 0, 0, 0, 0, 382 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 383 DSP_CDEV_TYPE_RDWR }, 384 { SND_DEV_AUDIO, "audio", ".", NULL, 0, 0, 0, 0, 385 SND_FORMAT(AFMT_MU_LAW, 1, 0), DSP_DEFAULT_SPEED, 386 DSP_CDEV_TYPE_RDWR }, 387 { SND_DEV_DSP16, "dspW", ".", NULL, 0, 0, 0, 0, 388 SND_FORMAT(AFMT_S16_LE, 1, 0), DSP_DEFAULT_SPEED, 389 DSP_CDEV_TYPE_RDWR }, 390 { SND_DEV_DSPHW_PLAY, "dsp", ".p", NULL, 1, 1, SND_MAXHWCHAN, 1, 391 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 392 { SND_DEV_DSPHW_VPLAY, "dsp", ".vp", NULL, 1, 1, SND_MAXVCHANS, 1, 393 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 394 { SND_DEV_DSPHW_REC, "dsp", ".r", NULL, 1, 1, SND_MAXHWCHAN, 1, 395 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 396 { SND_DEV_DSPHW_VREC, "dsp", ".vr", NULL, 1, 1, SND_MAXVCHANS, 1, 397 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 398 { SND_DEV_DSPHW_CD, "dspcd", ".", NULL, 0, 0, 0, 0, 399 SND_FORMAT(AFMT_S16_LE, 2, 0), 44100, DSP_CDEV_TYPE_RDWR }, 400 /* Low priority, OSSv4 aliases. */ 401 { SND_DEV_DSP, "dsp_ac3", ".", "dsp", 0, 0, 0, 0, 402 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 403 DSP_CDEV_TYPE_RDWR }, 404 { SND_DEV_DSP, "dsp_mmap", ".", "dsp", 0, 0, 0, 0, 405 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 406 DSP_CDEV_TYPE_RDWR }, 407 { SND_DEV_DSP, "dsp_multich", ".", "dsp", 0, 0, 0, 0, 408 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 409 DSP_CDEV_TYPE_RDWR }, 410 { SND_DEV_DSP, "dsp_spdifout", ".", "dsp", 0, 0, 0, 0, 411 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 412 DSP_CDEV_TYPE_RDWR }, 413 { SND_DEV_DSP, "dsp_spdifin", ".", "dsp", 0, 0, 0, 0, 414 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 415 DSP_CDEV_TYPE_RDWR }, 416 }; 417 418 #define DSP_FIXUP_ERROR() do { \ 419 prio = dsp_get_flags(i_dev); \ 420 if (!DSP_F_VALID(flags)) \ 421 error = EINVAL; \ 422 if (!DSP_F_DUPLEX(flags) && \ 423 ((DSP_F_READ(flags) && d->reccount == 0) || \ 424 (DSP_F_WRITE(flags) && d->playcount == 0))) \ 425 error = ENOTSUP; \ 426 else if (!DSP_F_DUPLEX(flags) && (prio & SD_F_SIMPLEX) && \ 427 ((DSP_F_READ(flags) && (prio & SD_F_PRIO_WR)) || \ 428 (DSP_F_WRITE(flags) && (prio & SD_F_PRIO_RD)))) \ 429 error = EBUSY; \ 430 else if (DSP_REGISTERED(d, i_dev)) \ 431 error = EBUSY; \ 432 } while (0) 433 434 static int 435 dsp_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 436 { 437 struct pcm_channel *rdch, *wrch; 438 struct snddev_info *d; 439 uint32_t fmt, spd, prio, volctl; 440 int i, error, rderror, wrerror, devtype, wdevunit, rdevunit; 441 442 /* Kind of impossible.. */ 443 if (i_dev == NULL || td == NULL) 444 return (ENODEV); 445 446 d = dsp_get_info(i_dev); 447 if (!PCM_REGISTERED(d)) 448 return (EBADF); 449 450 PCM_GIANT_ENTER(d); 451 452 /* Lock snddev so nobody else can monkey with it. */ 453 PCM_LOCK(d); 454 PCM_WAIT(d); 455 456 /* 457 * Try to acquire cloned device before someone else pick it. 458 * ENODEV means this is not a cloned droids. 459 */ 460 error = snd_clone_acquire(i_dev); 461 if (!(error == 0 || error == ENODEV)) { 462 DSP_FIXUP_ERROR(); 463 PCM_UNLOCK(d); 464 PCM_GIANT_EXIT(d); 465 return (error); 466 } 467 468 error = 0; 469 DSP_FIXUP_ERROR(); 470 471 if (error != 0) { 472 (void)snd_clone_release(i_dev); 473 PCM_UNLOCK(d); 474 PCM_GIANT_EXIT(d); 475 return (error); 476 } 477 478 /* 479 * That is just enough. Acquire and unlock pcm lock so 480 * the other will just have to wait until we finish doing 481 * everything. 482 */ 483 PCM_ACQUIRE(d); 484 PCM_UNLOCK(d); 485 486 devtype = PCMDEV(i_dev); 487 wdevunit = -1; 488 rdevunit = -1; 489 fmt = 0; 490 spd = 0; 491 volctl = DSP_CDEV_VOLCTL_NONE; 492 493 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 494 if (devtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 495 continue; 496 /* 497 * Volume control only valid for DSPHW devices, 498 * and it must be opened in opposite direction be it 499 * simplex or duplex. Anything else will be handled 500 * as usual. 501 */ 502 if (dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY) { 503 if (dsp_cdevs[i].volctl != 0 && 504 DSP_F_READ(flags)) { 505 volctl = DSP_CDEV_VOLCTL_WRITE; 506 flags &= ~FREAD; 507 flags |= FWRITE; 508 } 509 if (DSP_F_READ(flags)) { 510 (void)snd_clone_release(i_dev); 511 PCM_RELEASE_QUICK(d); 512 PCM_GIANT_EXIT(d); 513 return (ENOTSUP); 514 } 515 wdevunit = dev2unit(i_dev); 516 } else if (dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY) { 517 if (dsp_cdevs[i].volctl != 0 && 518 DSP_F_WRITE(flags)) { 519 volctl = DSP_CDEV_VOLCTL_READ; 520 flags &= ~FWRITE; 521 flags |= FREAD; 522 } 523 if (DSP_F_WRITE(flags)) { 524 (void)snd_clone_release(i_dev); 525 PCM_RELEASE_QUICK(d); 526 PCM_GIANT_EXIT(d); 527 return (ENOTSUP); 528 } 529 rdevunit = dev2unit(i_dev); 530 } 531 fmt = dsp_cdevs[i].fmt; 532 spd = dsp_cdevs[i].spd; 533 break; 534 } 535 536 /* No matching devtype? */ 537 if (fmt == 0 || spd == 0) 538 panic("impossible devtype %d", devtype); 539 540 rdch = NULL; 541 wrch = NULL; 542 rderror = 0; 543 wrerror = 0; 544 545 /* 546 * if we get here, the open request is valid- either: 547 * * we were previously not open 548 * * we were open for play xor record and the opener wants 549 * the non-open direction 550 */ 551 if (DSP_F_READ(flags)) { 552 /* open for read */ 553 rderror = pcm_chnalloc(d, &rdch, PCMDIR_REC, 554 td->td_proc->p_pid, td->td_proc->p_comm, rdevunit); 555 556 if (rderror == 0 && chn_reset(rdch, fmt, spd) != 0) 557 rderror = ENXIO; 558 559 if (volctl == DSP_CDEV_VOLCTL_READ) 560 rderror = 0; 561 562 if (rderror != 0) { 563 if (rdch != NULL) 564 pcm_chnrelease(rdch); 565 if (!DSP_F_DUPLEX(flags)) { 566 (void)snd_clone_release(i_dev); 567 PCM_RELEASE_QUICK(d); 568 PCM_GIANT_EXIT(d); 569 return (rderror); 570 } 571 rdch = NULL; 572 } else if (volctl == DSP_CDEV_VOLCTL_READ) { 573 if (rdch != NULL) { 574 pcm_chnref(rdch, 1); 575 pcm_chnrelease(rdch); 576 } 577 } else { 578 if (flags & O_NONBLOCK) 579 rdch->flags |= CHN_F_NBIO; 580 if (flags & O_EXCL) 581 rdch->flags |= CHN_F_EXCLUSIVE; 582 pcm_chnref(rdch, 1); 583 if (volctl == DSP_CDEV_VOLCTL_NONE) 584 chn_vpc_reset(rdch, SND_VOL_C_PCM, 0); 585 CHN_UNLOCK(rdch); 586 } 587 } 588 589 if (DSP_F_WRITE(flags)) { 590 /* open for write */ 591 wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY, 592 td->td_proc->p_pid, td->td_proc->p_comm, wdevunit); 593 594 if (wrerror == 0 && chn_reset(wrch, fmt, spd) != 0) 595 wrerror = ENXIO; 596 597 if (volctl == DSP_CDEV_VOLCTL_WRITE) 598 wrerror = 0; 599 600 if (wrerror != 0) { 601 if (wrch != NULL) 602 pcm_chnrelease(wrch); 603 if (!DSP_F_DUPLEX(flags)) { 604 if (rdch != NULL) { 605 /* 606 * Lock, deref and release previously 607 * created record channel 608 */ 609 CHN_LOCK(rdch); 610 pcm_chnref(rdch, -1); 611 pcm_chnrelease(rdch); 612 } 613 (void)snd_clone_release(i_dev); 614 PCM_RELEASE_QUICK(d); 615 PCM_GIANT_EXIT(d); 616 return (wrerror); 617 } 618 wrch = NULL; 619 } else if (volctl == DSP_CDEV_VOLCTL_WRITE) { 620 if (wrch != NULL) { 621 pcm_chnref(wrch, 1); 622 pcm_chnrelease(wrch); 623 } 624 } else { 625 if (flags & O_NONBLOCK) 626 wrch->flags |= CHN_F_NBIO; 627 if (flags & O_EXCL) 628 wrch->flags |= CHN_F_EXCLUSIVE; 629 pcm_chnref(wrch, 1); 630 if (volctl == DSP_CDEV_VOLCTL_NONE) 631 chn_vpc_reset(wrch, SND_VOL_C_PCM, 0); 632 CHN_UNLOCK(wrch); 633 } 634 } 635 636 637 PCM_LOCK(d); 638 639 /* 640 * We're done. Allocate channels information for this cdev. 641 */ 642 switch (volctl) { 643 case DSP_CDEV_VOLCTL_READ: 644 KASSERT(wrch == NULL, ("wrch=%p not null!", wrch)); 645 dsp_cdevinfo_alloc(i_dev, NULL, NULL, rdch); 646 break; 647 case DSP_CDEV_VOLCTL_WRITE: 648 KASSERT(rdch == NULL, ("rdch=%p not null!", rdch)); 649 dsp_cdevinfo_alloc(i_dev, NULL, NULL, wrch); 650 break; 651 case DSP_CDEV_VOLCTL_NONE: 652 default: 653 if (wrch == NULL && rdch == NULL) { 654 (void)snd_clone_release(i_dev); 655 PCM_RELEASE(d); 656 PCM_UNLOCK(d); 657 PCM_GIANT_EXIT(d); 658 if (wrerror != 0) 659 return (wrerror); 660 if (rderror != 0) 661 return (rderror); 662 return (EINVAL); 663 } 664 dsp_cdevinfo_alloc(i_dev, rdch, wrch, NULL); 665 if (rdch != NULL) 666 CHN_INSERT_HEAD(d, rdch, channels.pcm.opened); 667 if (wrch != NULL) 668 CHN_INSERT_HEAD(d, wrch, channels.pcm.opened); 669 break; 670 } 671 672 /* 673 * Increase clone refcount for its automatic garbage collector. 674 */ 675 (void)snd_clone_ref(i_dev); 676 677 PCM_RELEASE(d); 678 PCM_UNLOCK(d); 679 680 PCM_GIANT_LEAVE(d); 681 682 return (0); 683 } 684 685 static int 686 dsp_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 687 { 688 struct pcm_channel *rdch, *wrch, *volch; 689 struct snddev_info *d; 690 int sg_ids, rdref, wdref; 691 692 d = dsp_get_info(i_dev); 693 if (!DSP_REGISTERED(d, i_dev)) 694 return (EBADF); 695 696 PCM_GIANT_ENTER(d); 697 698 PCM_LOCK(d); 699 PCM_WAIT(d); 700 PCM_ACQUIRE(d); 701 702 rdch = PCM_RDCH(i_dev); 703 wrch = PCM_WRCH(i_dev); 704 volch = PCM_VOLCH(i_dev); 705 706 PCM_RDCH(i_dev) = NULL; 707 PCM_WRCH(i_dev) = NULL; 708 PCM_VOLCH(i_dev) = NULL; 709 710 rdref = -1; 711 wdref = -1; 712 713 if (volch != NULL) { 714 if (volch == rdch) 715 rdref--; 716 else if (volch == wrch) 717 wdref--; 718 else { 719 CHN_LOCK(volch); 720 pcm_chnref(volch, -1); 721 CHN_UNLOCK(volch); 722 } 723 } 724 725 if (rdch != NULL) 726 CHN_REMOVE(d, rdch, channels.pcm.opened); 727 if (wrch != NULL) 728 CHN_REMOVE(d, wrch, channels.pcm.opened); 729 730 if (rdch != NULL || wrch != NULL) { 731 PCM_UNLOCK(d); 732 if (rdch != NULL) { 733 /* 734 * The channel itself need not be locked because: 735 * a) Adding a channel to a syncgroup happens only 736 * in dsp_ioctl(), which cannot run concurrently 737 * to dsp_close(). 738 * b) The syncmember pointer (sm) is protected by 739 * the global syncgroup list lock. 740 * c) A channel can't just disappear, invalidating 741 * pointers, unless it's closed/dereferenced 742 * first. 743 */ 744 PCM_SG_LOCK(); 745 sg_ids = chn_syncdestroy(rdch); 746 PCM_SG_UNLOCK(); 747 if (sg_ids != 0) 748 free_unr(pcmsg_unrhdr, sg_ids); 749 750 CHN_LOCK(rdch); 751 pcm_chnref(rdch, rdref); 752 chn_abort(rdch); /* won't sleep */ 753 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 754 CHN_F_DEAD | CHN_F_EXCLUSIVE); 755 chn_reset(rdch, 0, 0); 756 pcm_chnrelease(rdch); 757 } 758 if (wrch != NULL) { 759 /* 760 * Please see block above. 761 */ 762 PCM_SG_LOCK(); 763 sg_ids = chn_syncdestroy(wrch); 764 PCM_SG_UNLOCK(); 765 if (sg_ids != 0) 766 free_unr(pcmsg_unrhdr, sg_ids); 767 768 CHN_LOCK(wrch); 769 pcm_chnref(wrch, wdref); 770 chn_flush(wrch); /* may sleep */ 771 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 772 CHN_F_DEAD | CHN_F_EXCLUSIVE); 773 chn_reset(wrch, 0, 0); 774 pcm_chnrelease(wrch); 775 } 776 PCM_LOCK(d); 777 } 778 779 dsp_cdevinfo_free(i_dev); 780 /* 781 * Release clone busy state and unref it so the automatic 782 * garbage collector will get the hint and do the remaining 783 * cleanup process. 784 */ 785 (void)snd_clone_release(i_dev); 786 787 /* 788 * destroy_dev() might sleep, so release pcm lock 789 * here and rely on pcm cv serialization. 790 */ 791 PCM_UNLOCK(d); 792 (void)snd_clone_unref(i_dev); 793 PCM_LOCK(d); 794 795 PCM_RELEASE(d); 796 PCM_UNLOCK(d); 797 798 PCM_GIANT_LEAVE(d); 799 800 return (0); 801 } 802 803 static __inline int 804 dsp_io_ops(struct cdev *i_dev, struct uio *buf) 805 { 806 struct snddev_info *d; 807 struct pcm_channel **ch, *rdch, *wrch; 808 int (*chn_io)(struct pcm_channel *, struct uio *); 809 int prio, ret; 810 pid_t runpid; 811 812 KASSERT(i_dev != NULL && buf != NULL && 813 (buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE), 814 ("%s(): io train wreck!", __func__)); 815 816 d = dsp_get_info(i_dev); 817 if (!DSP_REGISTERED(d, i_dev)) 818 return (EBADF); 819 820 PCM_GIANT_ENTER(d); 821 822 switch (buf->uio_rw) { 823 case UIO_READ: 824 prio = SD_F_PRIO_RD; 825 ch = &rdch; 826 chn_io = chn_read; 827 break; 828 case UIO_WRITE: 829 prio = SD_F_PRIO_WR; 830 ch = &wrch; 831 chn_io = chn_write; 832 break; 833 default: 834 panic("invalid/corrupted uio direction: %d", buf->uio_rw); 835 break; 836 } 837 838 rdch = NULL; 839 wrch = NULL; 840 runpid = buf->uio_td->td_proc->p_pid; 841 842 getchns(i_dev, &rdch, &wrch, prio); 843 844 if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) { 845 PCM_GIANT_EXIT(d); 846 return (EBADF); 847 } 848 849 if (((*ch)->flags & (CHN_F_MMAP | CHN_F_DEAD)) || 850 (((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) { 851 relchns(i_dev, rdch, wrch, prio); 852 PCM_GIANT_EXIT(d); 853 return (EINVAL); 854 } else if (!((*ch)->flags & CHN_F_RUNNING)) { 855 (*ch)->flags |= CHN_F_RUNNING; 856 (*ch)->pid = runpid; 857 } 858 859 /* 860 * chn_read/write must give up channel lock in order to copy bytes 861 * from/to userland, so up the "in progress" counter to make sure 862 * someone else doesn't come along and muss up the buffer. 863 */ 864 ++(*ch)->inprog; 865 ret = chn_io(*ch, buf); 866 --(*ch)->inprog; 867 868 CHN_BROADCAST(&(*ch)->cv); 869 870 relchns(i_dev, rdch, wrch, prio); 871 872 PCM_GIANT_LEAVE(d); 873 874 return (ret); 875 } 876 877 static int 878 dsp_read(struct cdev *i_dev, struct uio *buf, int flag) 879 { 880 return (dsp_io_ops(i_dev, buf)); 881 } 882 883 static int 884 dsp_write(struct cdev *i_dev, struct uio *buf, int flag) 885 { 886 return (dsp_io_ops(i_dev, buf)); 887 } 888 889 static int 890 dsp_get_volume_channel(struct cdev *dev, struct pcm_channel **volch) 891 { 892 struct snddev_info *d; 893 struct pcm_channel *c; 894 int unit; 895 896 KASSERT(dev != NULL && volch != NULL, 897 ("%s(): NULL query dev=%p volch=%p", __func__, dev, volch)); 898 899 d = dsp_get_info(dev); 900 if (!PCM_REGISTERED(d)) { 901 *volch = NULL; 902 return (EINVAL); 903 } 904 905 PCM_UNLOCKASSERT(d); 906 907 *volch = NULL; 908 909 c = PCM_VOLCH(dev); 910 if (c != NULL) { 911 if (!(c->feederflags & (1 << FEEDER_VOLUME))) 912 return (-1); 913 *volch = c; 914 return (0); 915 } 916 917 PCM_LOCK(d); 918 PCM_WAIT(d); 919 PCM_ACQUIRE(d); 920 921 unit = dev2unit(dev); 922 923 CHN_FOREACH(c, d, channels.pcm) { 924 CHN_LOCK(c); 925 if (c->unit != unit) { 926 CHN_UNLOCK(c); 927 continue; 928 } 929 *volch = c; 930 pcm_chnref(c, 1); 931 PCM_VOLCH(dev) = c; 932 CHN_UNLOCK(c); 933 PCM_RELEASE(d); 934 PCM_UNLOCK(d); 935 return ((c->feederflags & (1 << FEEDER_VOLUME)) ? 0 : -1); 936 } 937 938 PCM_RELEASE(d); 939 PCM_UNLOCK(d); 940 941 return (EINVAL); 942 } 943 944 static int 945 dsp_ioctl_channel(struct cdev *dev, struct pcm_channel *volch, u_long cmd, 946 caddr_t arg) 947 { 948 struct snddev_info *d; 949 struct pcm_channel *rdch, *wrch; 950 int j, devtype, ret; 951 952 d = dsp_get_info(dev); 953 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 954 return (-1); 955 956 PCM_UNLOCKASSERT(d); 957 958 j = cmd & 0xff; 959 960 rdch = PCM_RDCH(dev); 961 wrch = PCM_WRCH(dev); 962 963 /* No specific channel, look into cache */ 964 if (volch == NULL) 965 volch = PCM_VOLCH(dev); 966 967 /* Look harder */ 968 if (volch == NULL) { 969 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 970 volch = rdch; 971 else if (j == SOUND_MIXER_PCM && wrch != NULL) 972 volch = wrch; 973 } 974 975 devtype = PCMDEV(dev); 976 977 /* Look super harder */ 978 if (volch == NULL && 979 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 980 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 981 ret = dsp_get_volume_channel(dev, &volch); 982 if (ret != 0) 983 return (ret); 984 if (volch == NULL) 985 return (EINVAL); 986 } 987 988 /* Final validation */ 989 if (volch != NULL) { 990 CHN_LOCK(volch); 991 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 992 CHN_UNLOCK(volch); 993 return (-1); 994 } 995 if (volch->direction == PCMDIR_PLAY) 996 wrch = volch; 997 else 998 rdch = volch; 999 } 1000 1001 ret = EINVAL; 1002 1003 if (volch != NULL && 1004 ((j == SOUND_MIXER_PCM && volch->direction == PCMDIR_PLAY) || 1005 (j == SOUND_MIXER_RECLEV && volch->direction == PCMDIR_REC))) { 1006 if ((cmd & ~0xff) == MIXER_WRITE(0)) { 1007 int left, right, center; 1008 1009 left = *(int *)arg & 0x7f; 1010 right = ((*(int *)arg) >> 8) & 0x7f; 1011 center = (left + right) >> 1; 1012 chn_setvolume_multi(volch, SND_VOL_C_PCM, left, right, 1013 center); 1014 } else if ((cmd & ~0xff) == MIXER_READ(0)) { 1015 *(int *)arg = CHN_GETVOLUME(volch, 1016 SND_VOL_C_PCM, SND_CHN_T_FL); 1017 *(int *)arg |= CHN_GETVOLUME(volch, 1018 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1019 } 1020 ret = 0; 1021 } else if (rdch != NULL || wrch != NULL) { 1022 switch (j) { 1023 case SOUND_MIXER_DEVMASK: 1024 case SOUND_MIXER_CAPS: 1025 case SOUND_MIXER_STEREODEVS: 1026 if ((cmd & ~0xff) == MIXER_READ(0)) { 1027 *(int *)arg = 0; 1028 if (rdch != NULL) 1029 *(int *)arg |= SOUND_MASK_RECLEV; 1030 if (wrch != NULL) 1031 *(int *)arg |= SOUND_MASK_PCM; 1032 } 1033 ret = 0; 1034 break; 1035 case SOUND_MIXER_RECMASK: 1036 case SOUND_MIXER_RECSRC: 1037 if ((cmd & ~0xff) == MIXER_READ(0)) 1038 *(int *)arg = 0; 1039 ret = 0; 1040 break; 1041 default: 1042 break; 1043 } 1044 } 1045 1046 if (volch != NULL) 1047 CHN_UNLOCK(volch); 1048 1049 return (ret); 1050 } 1051 1052 static int 1053 dsp_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1054 struct thread *td) 1055 { 1056 struct pcm_channel *chn, *rdch, *wrch; 1057 struct snddev_info *d; 1058 int *arg_i, ret, tmp, xcmd; 1059 1060 d = dsp_get_info(i_dev); 1061 if (!DSP_REGISTERED(d, i_dev)) 1062 return (EBADF); 1063 1064 PCM_GIANT_ENTER(d); 1065 1066 arg_i = (int *)arg; 1067 ret = 0; 1068 xcmd = 0; 1069 chn = NULL; 1070 1071 if (IOCGROUP(cmd) == 'M') { 1072 if (cmd == OSS_GETVERSION) { 1073 *arg_i = SOUND_VERSION; 1074 PCM_GIANT_EXIT(d); 1075 return (0); 1076 } 1077 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1078 if (ret != -1) { 1079 PCM_GIANT_EXIT(d); 1080 return (ret); 1081 } 1082 1083 if (d->mixer_dev != NULL) { 1084 PCM_ACQUIRE_QUICK(d); 1085 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1086 MIXER_CMD_DIRECT); 1087 PCM_RELEASE_QUICK(d); 1088 } else 1089 ret = EBADF; 1090 1091 PCM_GIANT_EXIT(d); 1092 1093 return (ret); 1094 } 1095 1096 /* 1097 * Certain ioctls may be made on any type of device (audio, mixer, 1098 * and MIDI). Handle those special cases here. 1099 */ 1100 if (IOCGROUP(cmd) == 'X') { 1101 PCM_ACQUIRE_QUICK(d); 1102 switch(cmd) { 1103 case SNDCTL_SYSINFO: 1104 sound_oss_sysinfo((oss_sysinfo *)arg); 1105 break; 1106 case SNDCTL_CARDINFO: 1107 ret = sound_oss_card_info((oss_card_info *)arg); 1108 break; 1109 case SNDCTL_AUDIOINFO: 1110 case SNDCTL_AUDIOINFO_EX: 1111 case SNDCTL_ENGINEINFO: 1112 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1113 break; 1114 case SNDCTL_MIXERINFO: 1115 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1116 break; 1117 default: 1118 ret = EINVAL; 1119 } 1120 PCM_RELEASE_QUICK(d); 1121 PCM_GIANT_EXIT(d); 1122 return (ret); 1123 } 1124 1125 getchns(i_dev, &rdch, &wrch, 0); 1126 1127 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1128 wrch = NULL; 1129 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1130 rdch = NULL; 1131 1132 if (wrch == NULL && rdch == NULL) { 1133 PCM_GIANT_EXIT(d); 1134 return (EINVAL); 1135 } 1136 1137 switch(cmd) { 1138 #ifdef OLDPCM_IOCTL 1139 /* 1140 * we start with the new ioctl interface. 1141 */ 1142 case AIONWRITE: /* how many bytes can write ? */ 1143 if (wrch) { 1144 CHN_LOCK(wrch); 1145 /* 1146 if (wrch && wrch->bufhard.dl) 1147 while (chn_wrfeed(wrch) == 0); 1148 */ 1149 *arg_i = sndbuf_getfree(wrch->bufsoft); 1150 CHN_UNLOCK(wrch); 1151 } else { 1152 *arg_i = 0; 1153 ret = EINVAL; 1154 } 1155 break; 1156 1157 case AIOSSIZE: /* set the current blocksize */ 1158 { 1159 struct snd_size *p = (struct snd_size *)arg; 1160 1161 p->play_size = 0; 1162 p->rec_size = 0; 1163 PCM_ACQUIRE_QUICK(d); 1164 if (wrch) { 1165 CHN_LOCK(wrch); 1166 chn_setblocksize(wrch, 2, p->play_size); 1167 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1168 CHN_UNLOCK(wrch); 1169 } 1170 if (rdch) { 1171 CHN_LOCK(rdch); 1172 chn_setblocksize(rdch, 2, p->rec_size); 1173 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1174 CHN_UNLOCK(rdch); 1175 } 1176 PCM_RELEASE_QUICK(d); 1177 } 1178 break; 1179 case AIOGSIZE: /* get the current blocksize */ 1180 { 1181 struct snd_size *p = (struct snd_size *)arg; 1182 1183 if (wrch) { 1184 CHN_LOCK(wrch); 1185 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1186 CHN_UNLOCK(wrch); 1187 } 1188 if (rdch) { 1189 CHN_LOCK(rdch); 1190 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1191 CHN_UNLOCK(rdch); 1192 } 1193 } 1194 break; 1195 1196 case AIOSFMT: 1197 case AIOGFMT: 1198 { 1199 snd_chan_param *p = (snd_chan_param *)arg; 1200 1201 if (cmd == AIOSFMT && 1202 ((p->play_format != 0 && p->play_rate == 0) || 1203 (p->rec_format != 0 && p->rec_rate == 0))) { 1204 ret = EINVAL; 1205 break; 1206 } 1207 PCM_ACQUIRE_QUICK(d); 1208 if (wrch) { 1209 CHN_LOCK(wrch); 1210 if (cmd == AIOSFMT && p->play_format != 0) { 1211 chn_setformat(wrch, 1212 SND_FORMAT(p->play_format, 1213 AFMT_CHANNEL(wrch->format), 1214 AFMT_EXTCHANNEL(wrch->format))); 1215 chn_setspeed(wrch, p->play_rate); 1216 } 1217 p->play_rate = wrch->speed; 1218 p->play_format = AFMT_ENCODING(wrch->format); 1219 CHN_UNLOCK(wrch); 1220 } else { 1221 p->play_rate = 0; 1222 p->play_format = 0; 1223 } 1224 if (rdch) { 1225 CHN_LOCK(rdch); 1226 if (cmd == AIOSFMT && p->rec_format != 0) { 1227 chn_setformat(rdch, 1228 SND_FORMAT(p->rec_format, 1229 AFMT_CHANNEL(rdch->format), 1230 AFMT_EXTCHANNEL(rdch->format))); 1231 chn_setspeed(rdch, p->rec_rate); 1232 } 1233 p->rec_rate = rdch->speed; 1234 p->rec_format = AFMT_ENCODING(rdch->format); 1235 CHN_UNLOCK(rdch); 1236 } else { 1237 p->rec_rate = 0; 1238 p->rec_format = 0; 1239 } 1240 PCM_RELEASE_QUICK(d); 1241 } 1242 break; 1243 1244 case AIOGCAP: /* get capabilities */ 1245 { 1246 snd_capabilities *p = (snd_capabilities *)arg; 1247 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1248 struct cdev *pdev; 1249 1250 PCM_LOCK(d); 1251 if (rdch) { 1252 CHN_LOCK(rdch); 1253 rcaps = chn_getcaps(rdch); 1254 } 1255 if (wrch) { 1256 CHN_LOCK(wrch); 1257 pcaps = chn_getcaps(wrch); 1258 } 1259 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1260 pcaps? pcaps->minspeed : 0); 1261 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1262 pcaps? pcaps->maxspeed : 1000000); 1263 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1264 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1265 /* XXX bad on sb16 */ 1266 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1267 (wrch? chn_getformats(wrch) : 0xffffffff); 1268 if (rdch && wrch) 1269 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1270 pdev = d->mixer_dev; 1271 p->mixers = 1; /* default: one mixer */ 1272 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1273 p->left = p->right = 100; 1274 if (wrch) 1275 CHN_UNLOCK(wrch); 1276 if (rdch) 1277 CHN_UNLOCK(rdch); 1278 PCM_UNLOCK(d); 1279 } 1280 break; 1281 1282 case AIOSTOP: 1283 if (*arg_i == AIOSYNC_PLAY && wrch) { 1284 CHN_LOCK(wrch); 1285 *arg_i = chn_abort(wrch); 1286 CHN_UNLOCK(wrch); 1287 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1288 CHN_LOCK(rdch); 1289 *arg_i = chn_abort(rdch); 1290 CHN_UNLOCK(rdch); 1291 } else { 1292 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1293 *arg_i = 0; 1294 } 1295 break; 1296 1297 case AIOSYNC: 1298 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1299 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1300 break; 1301 #endif 1302 /* 1303 * here follow the standard ioctls (filio.h etc.) 1304 */ 1305 case FIONREAD: /* get # bytes to read */ 1306 if (rdch) { 1307 CHN_LOCK(rdch); 1308 /* if (rdch && rdch->bufhard.dl) 1309 while (chn_rdfeed(rdch) == 0); 1310 */ 1311 *arg_i = sndbuf_getready(rdch->bufsoft); 1312 CHN_UNLOCK(rdch); 1313 } else { 1314 *arg_i = 0; 1315 ret = EINVAL; 1316 } 1317 break; 1318 1319 case FIOASYNC: /*set/clear async i/o */ 1320 DEB( printf("FIOASYNC\n") ; ) 1321 break; 1322 1323 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1324 case FIONBIO: /* set/clear non-blocking i/o */ 1325 if (rdch) { 1326 CHN_LOCK(rdch); 1327 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1328 rdch->flags |= CHN_F_NBIO; 1329 else 1330 rdch->flags &= ~CHN_F_NBIO; 1331 CHN_UNLOCK(rdch); 1332 } 1333 if (wrch) { 1334 CHN_LOCK(wrch); 1335 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1336 wrch->flags |= CHN_F_NBIO; 1337 else 1338 wrch->flags &= ~CHN_F_NBIO; 1339 CHN_UNLOCK(wrch); 1340 } 1341 break; 1342 1343 /* 1344 * Finally, here is the linux-compatible ioctl interface 1345 */ 1346 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1347 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1348 case SNDCTL_DSP_GETBLKSIZE: 1349 chn = wrch ? wrch : rdch; 1350 if (chn) { 1351 CHN_LOCK(chn); 1352 *arg_i = sndbuf_getblksz(chn->bufsoft); 1353 CHN_UNLOCK(chn); 1354 } else { 1355 *arg_i = 0; 1356 ret = EINVAL; 1357 } 1358 break; 1359 1360 case SNDCTL_DSP_SETBLKSIZE: 1361 RANGE(*arg_i, 16, 65536); 1362 PCM_ACQUIRE_QUICK(d); 1363 if (wrch) { 1364 CHN_LOCK(wrch); 1365 chn_setblocksize(wrch, 2, *arg_i); 1366 CHN_UNLOCK(wrch); 1367 } 1368 if (rdch) { 1369 CHN_LOCK(rdch); 1370 chn_setblocksize(rdch, 2, *arg_i); 1371 CHN_UNLOCK(rdch); 1372 } 1373 PCM_RELEASE_QUICK(d); 1374 break; 1375 1376 case SNDCTL_DSP_RESET: 1377 DEB(printf("dsp reset\n")); 1378 if (wrch) { 1379 CHN_LOCK(wrch); 1380 chn_abort(wrch); 1381 chn_resetbuf(wrch); 1382 CHN_UNLOCK(wrch); 1383 } 1384 if (rdch) { 1385 CHN_LOCK(rdch); 1386 chn_abort(rdch); 1387 chn_resetbuf(rdch); 1388 CHN_UNLOCK(rdch); 1389 } 1390 break; 1391 1392 case SNDCTL_DSP_SYNC: 1393 DEB(printf("dsp sync\n")); 1394 /* chn_sync may sleep */ 1395 if (wrch) { 1396 CHN_LOCK(wrch); 1397 chn_sync(wrch, 0); 1398 CHN_UNLOCK(wrch); 1399 } 1400 break; 1401 1402 case SNDCTL_DSP_SPEED: 1403 /* chn_setspeed may sleep */ 1404 tmp = 0; 1405 PCM_ACQUIRE_QUICK(d); 1406 if (wrch) { 1407 CHN_LOCK(wrch); 1408 ret = chn_setspeed(wrch, *arg_i); 1409 tmp = wrch->speed; 1410 CHN_UNLOCK(wrch); 1411 } 1412 if (rdch && ret == 0) { 1413 CHN_LOCK(rdch); 1414 ret = chn_setspeed(rdch, *arg_i); 1415 if (tmp == 0) 1416 tmp = rdch->speed; 1417 CHN_UNLOCK(rdch); 1418 } 1419 PCM_RELEASE_QUICK(d); 1420 *arg_i = tmp; 1421 break; 1422 1423 case SOUND_PCM_READ_RATE: 1424 chn = wrch ? wrch : rdch; 1425 if (chn) { 1426 CHN_LOCK(chn); 1427 *arg_i = chn->speed; 1428 CHN_UNLOCK(chn); 1429 } else { 1430 *arg_i = 0; 1431 ret = EINVAL; 1432 } 1433 break; 1434 1435 case SNDCTL_DSP_STEREO: 1436 tmp = -1; 1437 *arg_i = (*arg_i)? 2 : 1; 1438 PCM_ACQUIRE_QUICK(d); 1439 if (wrch) { 1440 CHN_LOCK(wrch); 1441 ret = chn_setformat(wrch, 1442 SND_FORMAT(wrch->format, *arg_i, 0)); 1443 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1444 CHN_UNLOCK(wrch); 1445 } 1446 if (rdch && ret == 0) { 1447 CHN_LOCK(rdch); 1448 ret = chn_setformat(rdch, 1449 SND_FORMAT(rdch->format, *arg_i, 0)); 1450 if (tmp == -1) 1451 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1452 CHN_UNLOCK(rdch); 1453 } 1454 PCM_RELEASE_QUICK(d); 1455 *arg_i = tmp; 1456 break; 1457 1458 case SOUND_PCM_WRITE_CHANNELS: 1459 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1460 if (*arg_i < 0) { 1461 *arg_i = 0; 1462 ret = EINVAL; 1463 break; 1464 } 1465 if (*arg_i != 0) { 1466 struct pcmchan_matrix *m; 1467 uint32_t ext; 1468 1469 tmp = 0; 1470 if (*arg_i > SND_CHN_MAX) 1471 *arg_i = SND_CHN_MAX; 1472 1473 m = feeder_matrix_default_channel_map(*arg_i); 1474 if (m != NULL) 1475 ext = m->ext; 1476 else 1477 ext = 0; 1478 1479 PCM_ACQUIRE_QUICK(d); 1480 if (wrch) { 1481 CHN_LOCK(wrch); 1482 ret = chn_setformat(wrch, 1483 SND_FORMAT(wrch->format, *arg_i, ext)); 1484 tmp = AFMT_CHANNEL(wrch->format); 1485 CHN_UNLOCK(wrch); 1486 } 1487 if (rdch && ret == 0) { 1488 CHN_LOCK(rdch); 1489 ret = chn_setformat(rdch, 1490 SND_FORMAT(rdch->format, *arg_i, ext)); 1491 if (tmp == 0) 1492 tmp = AFMT_CHANNEL(rdch->format); 1493 CHN_UNLOCK(rdch); 1494 } 1495 PCM_RELEASE_QUICK(d); 1496 *arg_i = tmp; 1497 } else { 1498 chn = wrch ? wrch : rdch; 1499 CHN_LOCK(chn); 1500 *arg_i = AFMT_CHANNEL(chn->format); 1501 CHN_UNLOCK(chn); 1502 } 1503 break; 1504 1505 case SOUND_PCM_READ_CHANNELS: 1506 chn = wrch ? wrch : rdch; 1507 if (chn) { 1508 CHN_LOCK(chn); 1509 *arg_i = AFMT_CHANNEL(chn->format); 1510 CHN_UNLOCK(chn); 1511 } else { 1512 *arg_i = 0; 1513 ret = EINVAL; 1514 } 1515 break; 1516 1517 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1518 chn = wrch ? wrch : rdch; 1519 if (chn) { 1520 CHN_LOCK(chn); 1521 *arg_i = chn_getformats(chn); 1522 CHN_UNLOCK(chn); 1523 } else { 1524 *arg_i = 0; 1525 ret = EINVAL; 1526 } 1527 break; 1528 1529 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1530 if (*arg_i != AFMT_QUERY) { 1531 tmp = 0; 1532 PCM_ACQUIRE_QUICK(d); 1533 if (wrch) { 1534 CHN_LOCK(wrch); 1535 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1536 AFMT_CHANNEL(wrch->format), 1537 AFMT_EXTCHANNEL(wrch->format))); 1538 tmp = wrch->format; 1539 CHN_UNLOCK(wrch); 1540 } 1541 if (rdch && ret == 0) { 1542 CHN_LOCK(rdch); 1543 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1544 AFMT_CHANNEL(rdch->format), 1545 AFMT_EXTCHANNEL(rdch->format))); 1546 if (tmp == 0) 1547 tmp = rdch->format; 1548 CHN_UNLOCK(rdch); 1549 } 1550 PCM_RELEASE_QUICK(d); 1551 *arg_i = AFMT_ENCODING(tmp); 1552 } else { 1553 chn = wrch ? wrch : rdch; 1554 CHN_LOCK(chn); 1555 *arg_i = AFMT_ENCODING(chn->format); 1556 CHN_UNLOCK(chn); 1557 } 1558 break; 1559 1560 case SNDCTL_DSP_SETFRAGMENT: 1561 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1562 { 1563 uint32_t fragln = (*arg_i) & 0x0000ffff; 1564 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1565 uint32_t fragsz; 1566 uint32_t r_maxfrags, r_fragsz; 1567 1568 RANGE(fragln, 4, 16); 1569 fragsz = 1 << fragln; 1570 1571 if (maxfrags == 0) 1572 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1573 if (maxfrags < 2) 1574 maxfrags = 2; 1575 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1576 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1577 1578 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1579 PCM_ACQUIRE_QUICK(d); 1580 if (rdch) { 1581 CHN_LOCK(rdch); 1582 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1583 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1584 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1585 CHN_UNLOCK(rdch); 1586 } else { 1587 r_maxfrags = maxfrags; 1588 r_fragsz = fragsz; 1589 } 1590 if (wrch && ret == 0) { 1591 CHN_LOCK(wrch); 1592 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1593 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1594 fragsz = sndbuf_getblksz(wrch->bufsoft); 1595 CHN_UNLOCK(wrch); 1596 } else { /* use whatever came from the read channel */ 1597 maxfrags = r_maxfrags; 1598 fragsz = r_fragsz; 1599 } 1600 PCM_RELEASE_QUICK(d); 1601 1602 fragln = 0; 1603 while (fragsz > 1) { 1604 fragln++; 1605 fragsz >>= 1; 1606 } 1607 *arg_i = (maxfrags << 16) | fragln; 1608 } 1609 break; 1610 1611 case SNDCTL_DSP_GETISPACE: 1612 /* return the size of data available in the input queue */ 1613 { 1614 audio_buf_info *a = (audio_buf_info *)arg; 1615 if (rdch) { 1616 struct snd_dbuf *bs = rdch->bufsoft; 1617 1618 CHN_LOCK(rdch); 1619 a->bytes = sndbuf_getready(bs); 1620 a->fragments = a->bytes / sndbuf_getblksz(bs); 1621 a->fragstotal = sndbuf_getblkcnt(bs); 1622 a->fragsize = sndbuf_getblksz(bs); 1623 CHN_UNLOCK(rdch); 1624 } else 1625 ret = EINVAL; 1626 } 1627 break; 1628 1629 case SNDCTL_DSP_GETOSPACE: 1630 /* return space available in the output queue */ 1631 { 1632 audio_buf_info *a = (audio_buf_info *)arg; 1633 if (wrch) { 1634 struct snd_dbuf *bs = wrch->bufsoft; 1635 1636 CHN_LOCK(wrch); 1637 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1638 a->bytes = sndbuf_getfree(bs); 1639 a->fragments = a->bytes / sndbuf_getblksz(bs); 1640 a->fragstotal = sndbuf_getblkcnt(bs); 1641 a->fragsize = sndbuf_getblksz(bs); 1642 CHN_UNLOCK(wrch); 1643 } else 1644 ret = EINVAL; 1645 } 1646 break; 1647 1648 case SNDCTL_DSP_GETIPTR: 1649 { 1650 count_info *a = (count_info *)arg; 1651 if (rdch) { 1652 struct snd_dbuf *bs = rdch->bufsoft; 1653 1654 CHN_LOCK(rdch); 1655 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1656 a->bytes = sndbuf_gettotal(bs); 1657 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1658 a->ptr = sndbuf_getreadyptr(bs); 1659 rdch->blocks = sndbuf_getblocks(bs); 1660 CHN_UNLOCK(rdch); 1661 } else 1662 ret = EINVAL; 1663 } 1664 break; 1665 1666 case SNDCTL_DSP_GETOPTR: 1667 { 1668 count_info *a = (count_info *)arg; 1669 if (wrch) { 1670 struct snd_dbuf *bs = wrch->bufsoft; 1671 1672 CHN_LOCK(wrch); 1673 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1674 a->bytes = sndbuf_gettotal(bs); 1675 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1676 a->ptr = sndbuf_getreadyptr(bs); 1677 wrch->blocks = sndbuf_getblocks(bs); 1678 CHN_UNLOCK(wrch); 1679 } else 1680 ret = EINVAL; 1681 } 1682 break; 1683 1684 case SNDCTL_DSP_GETCAPS: 1685 PCM_LOCK(d); 1686 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1687 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1688 *arg_i |= PCM_CAP_DUPLEX; 1689 PCM_UNLOCK(d); 1690 break; 1691 1692 case SOUND_PCM_READ_BITS: 1693 chn = wrch ? wrch : rdch; 1694 if (chn) { 1695 CHN_LOCK(chn); 1696 if (chn->format & AFMT_8BIT) 1697 *arg_i = 8; 1698 else if (chn->format & AFMT_16BIT) 1699 *arg_i = 16; 1700 else if (chn->format & AFMT_24BIT) 1701 *arg_i = 24; 1702 else if (chn->format & AFMT_32BIT) 1703 *arg_i = 32; 1704 else 1705 ret = EINVAL; 1706 CHN_UNLOCK(chn); 1707 } else { 1708 *arg_i = 0; 1709 ret = EINVAL; 1710 } 1711 break; 1712 1713 case SNDCTL_DSP_SETTRIGGER: 1714 if (rdch) { 1715 CHN_LOCK(rdch); 1716 rdch->flags &= ~CHN_F_NOTRIGGER; 1717 if (*arg_i & PCM_ENABLE_INPUT) 1718 chn_start(rdch, 1); 1719 else { 1720 chn_abort(rdch); 1721 chn_resetbuf(rdch); 1722 rdch->flags |= CHN_F_NOTRIGGER; 1723 } 1724 CHN_UNLOCK(rdch); 1725 } 1726 if (wrch) { 1727 CHN_LOCK(wrch); 1728 wrch->flags &= ~CHN_F_NOTRIGGER; 1729 if (*arg_i & PCM_ENABLE_OUTPUT) 1730 chn_start(wrch, 1); 1731 else { 1732 chn_abort(wrch); 1733 chn_resetbuf(wrch); 1734 wrch->flags |= CHN_F_NOTRIGGER; 1735 } 1736 CHN_UNLOCK(wrch); 1737 } 1738 break; 1739 1740 case SNDCTL_DSP_GETTRIGGER: 1741 *arg_i = 0; 1742 if (wrch) { 1743 CHN_LOCK(wrch); 1744 if (wrch->flags & CHN_F_TRIGGERED) 1745 *arg_i |= PCM_ENABLE_OUTPUT; 1746 CHN_UNLOCK(wrch); 1747 } 1748 if (rdch) { 1749 CHN_LOCK(rdch); 1750 if (rdch->flags & CHN_F_TRIGGERED) 1751 *arg_i |= PCM_ENABLE_INPUT; 1752 CHN_UNLOCK(rdch); 1753 } 1754 break; 1755 1756 case SNDCTL_DSP_GETODELAY: 1757 if (wrch) { 1758 struct snd_dbuf *bs = wrch->bufsoft; 1759 1760 CHN_LOCK(wrch); 1761 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1762 *arg_i = sndbuf_getready(bs); 1763 CHN_UNLOCK(wrch); 1764 } else 1765 ret = EINVAL; 1766 break; 1767 1768 case SNDCTL_DSP_POST: 1769 if (wrch) { 1770 CHN_LOCK(wrch); 1771 wrch->flags &= ~CHN_F_NOTRIGGER; 1772 chn_start(wrch, 1); 1773 CHN_UNLOCK(wrch); 1774 } 1775 break; 1776 1777 case SNDCTL_DSP_SETDUPLEX: 1778 /* 1779 * switch to full-duplex mode if card is in half-duplex 1780 * mode and is able to work in full-duplex mode 1781 */ 1782 PCM_LOCK(d); 1783 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1784 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1785 PCM_UNLOCK(d); 1786 break; 1787 1788 /* 1789 * The following four ioctls are simple wrappers around mixer_ioctl 1790 * with no further processing. xcmd is short for "translated 1791 * command". 1792 */ 1793 case SNDCTL_DSP_GETRECVOL: 1794 if (xcmd == 0) { 1795 xcmd = SOUND_MIXER_READ_RECLEV; 1796 chn = rdch; 1797 } 1798 /* FALLTHROUGH */ 1799 case SNDCTL_DSP_SETRECVOL: 1800 if (xcmd == 0) { 1801 xcmd = SOUND_MIXER_WRITE_RECLEV; 1802 chn = rdch; 1803 } 1804 /* FALLTHROUGH */ 1805 case SNDCTL_DSP_GETPLAYVOL: 1806 if (xcmd == 0) { 1807 xcmd = SOUND_MIXER_READ_PCM; 1808 chn = wrch; 1809 } 1810 /* FALLTHROUGH */ 1811 case SNDCTL_DSP_SETPLAYVOL: 1812 if (xcmd == 0) { 1813 xcmd = SOUND_MIXER_WRITE_PCM; 1814 chn = wrch; 1815 } 1816 1817 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1818 if (ret != -1) { 1819 PCM_GIANT_EXIT(d); 1820 return (ret); 1821 } 1822 1823 if (d->mixer_dev != NULL) { 1824 PCM_ACQUIRE_QUICK(d); 1825 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1826 MIXER_CMD_DIRECT); 1827 PCM_RELEASE_QUICK(d); 1828 } else 1829 ret = ENOTSUP; 1830 1831 break; 1832 1833 case SNDCTL_DSP_GET_RECSRC_NAMES: 1834 case SNDCTL_DSP_GET_RECSRC: 1835 case SNDCTL_DSP_SET_RECSRC: 1836 if (d->mixer_dev != NULL) { 1837 PCM_ACQUIRE_QUICK(d); 1838 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1839 MIXER_CMD_DIRECT); 1840 PCM_RELEASE_QUICK(d); 1841 } else 1842 ret = ENOTSUP; 1843 break; 1844 1845 /* 1846 * The following 3 ioctls aren't very useful at the moment. For 1847 * now, only a single channel is associated with a cdev (/dev/dspN 1848 * instance), so there's only a single output routing to use (i.e., 1849 * the wrch bound to this cdev). 1850 */ 1851 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1852 { 1853 oss_mixer_enuminfo *ei; 1854 ei = (oss_mixer_enuminfo *)arg; 1855 ei->dev = 0; 1856 ei->ctrl = 0; 1857 ei->version = 0; /* static for now */ 1858 ei->strindex[0] = 0; 1859 1860 if (wrch != NULL) { 1861 ei->nvalues = 1; 1862 strlcpy(ei->strings, wrch->name, 1863 sizeof(ei->strings)); 1864 } else { 1865 ei->nvalues = 0; 1866 ei->strings[0] = '\0'; 1867 } 1868 } 1869 break; 1870 case SNDCTL_DSP_GET_PLAYTGT: 1871 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1872 /* 1873 * Re: SET_PLAYTGT 1874 * OSSv4: "The value that was accepted by the device will 1875 * be returned back in the variable pointed by the 1876 * argument." 1877 */ 1878 if (wrch != NULL) 1879 *arg_i = 0; 1880 else 1881 ret = EINVAL; 1882 break; 1883 1884 case SNDCTL_DSP_SILENCE: 1885 /* 1886 * Flush the software (pre-feed) buffer, but try to minimize playback 1887 * interruption. (I.e., record unplayed samples with intent to 1888 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1889 * functionality. 1890 */ 1891 if (wrch == NULL) 1892 ret = EINVAL; 1893 else { 1894 struct snd_dbuf *bs; 1895 CHN_LOCK(wrch); 1896 while (wrch->inprog != 0) 1897 cv_wait(&wrch->cv, wrch->lock); 1898 bs = wrch->bufsoft; 1899 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1900 bs->sl = sndbuf_getready(bs); 1901 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1902 sndbuf_fillsilence(bs); 1903 chn_start(wrch, 0); 1904 } 1905 CHN_UNLOCK(wrch); 1906 } 1907 break; 1908 1909 case SNDCTL_DSP_SKIP: 1910 /* 1911 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1912 * playback buffer by moving the current write position immediately 1913 * before the point where the device is currently reading the samples." 1914 */ 1915 if (wrch == NULL) 1916 ret = EINVAL; 1917 else { 1918 struct snd_dbuf *bs; 1919 CHN_LOCK(wrch); 1920 while (wrch->inprog != 0) 1921 cv_wait(&wrch->cv, wrch->lock); 1922 bs = wrch->bufsoft; 1923 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1924 sndbuf_softreset(bs); 1925 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1926 bs->sl = 0; 1927 chn_start(wrch, 0); 1928 } 1929 CHN_UNLOCK(wrch); 1930 } 1931 break; 1932 1933 case SNDCTL_DSP_CURRENT_OPTR: 1934 case SNDCTL_DSP_CURRENT_IPTR: 1935 /** 1936 * @note Changing formats resets the buffer counters, which differs 1937 * from the 4Front drivers. However, I don't expect this to be 1938 * much of a problem. 1939 * 1940 * @note In a test where @c CURRENT_OPTR is called immediately after write 1941 * returns, this driver is about 32K samples behind whereas 1942 * 4Front's is about 8K samples behind. Should determine source 1943 * of discrepancy, even if only out of curiosity. 1944 * 1945 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1946 */ 1947 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1948 if (chn == NULL) 1949 ret = EINVAL; 1950 else { 1951 struct snd_dbuf *bs; 1952 /* int tmp; */ 1953 1954 oss_count_t *oc = (oss_count_t *)arg; 1955 1956 CHN_LOCK(chn); 1957 bs = chn->bufsoft; 1958 #if 0 1959 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1960 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1961 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1962 #else 1963 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1964 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1965 #endif 1966 CHN_UNLOCK(chn); 1967 } 1968 break; 1969 1970 case SNDCTL_DSP_HALT_OUTPUT: 1971 case SNDCTL_DSP_HALT_INPUT: 1972 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1973 if (chn == NULL) 1974 ret = EINVAL; 1975 else { 1976 CHN_LOCK(chn); 1977 chn_abort(chn); 1978 CHN_UNLOCK(chn); 1979 } 1980 break; 1981 1982 case SNDCTL_DSP_LOW_WATER: 1983 /* 1984 * Set the number of bytes required to attract attention by 1985 * select/poll. 1986 */ 1987 if (wrch != NULL) { 1988 CHN_LOCK(wrch); 1989 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 1990 CHN_UNLOCK(wrch); 1991 } 1992 if (rdch != NULL) { 1993 CHN_LOCK(rdch); 1994 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 1995 CHN_UNLOCK(rdch); 1996 } 1997 break; 1998 1999 case SNDCTL_DSP_GETERROR: 2000 /* 2001 * OSSv4 docs: "All errors and counters will automatically be 2002 * cleared to zeroes after the call so each call will return only 2003 * the errors that occurred after the previous invocation. ... The 2004 * play_underruns and rec_overrun fields are the only usefull fields 2005 * returned by OSS 4.0." 2006 */ 2007 { 2008 audio_errinfo *ei = (audio_errinfo *)arg; 2009 2010 bzero((void *)ei, sizeof(*ei)); 2011 2012 if (wrch != NULL) { 2013 CHN_LOCK(wrch); 2014 ei->play_underruns = wrch->xruns; 2015 wrch->xruns = 0; 2016 CHN_UNLOCK(wrch); 2017 } 2018 if (rdch != NULL) { 2019 CHN_LOCK(rdch); 2020 ei->rec_overruns = rdch->xruns; 2021 rdch->xruns = 0; 2022 CHN_UNLOCK(rdch); 2023 } 2024 } 2025 break; 2026 2027 case SNDCTL_DSP_SYNCGROUP: 2028 PCM_ACQUIRE_QUICK(d); 2029 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2030 PCM_RELEASE_QUICK(d); 2031 break; 2032 2033 case SNDCTL_DSP_SYNCSTART: 2034 PCM_ACQUIRE_QUICK(d); 2035 ret = dsp_oss_syncstart(*arg_i); 2036 PCM_RELEASE_QUICK(d); 2037 break; 2038 2039 case SNDCTL_DSP_POLICY: 2040 PCM_ACQUIRE_QUICK(d); 2041 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2042 PCM_RELEASE_QUICK(d); 2043 break; 2044 2045 case SNDCTL_DSP_COOKEDMODE: 2046 PCM_ACQUIRE_QUICK(d); 2047 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2048 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2049 PCM_RELEASE_QUICK(d); 2050 break; 2051 case SNDCTL_DSP_GET_CHNORDER: 2052 PCM_ACQUIRE_QUICK(d); 2053 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2054 PCM_RELEASE_QUICK(d); 2055 break; 2056 case SNDCTL_DSP_SET_CHNORDER: 2057 PCM_ACQUIRE_QUICK(d); 2058 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2059 PCM_RELEASE_QUICK(d); 2060 break; 2061 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2062 PCM_ACQUIRE_QUICK(d); 2063 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2064 PCM_RELEASE_QUICK(d); 2065 break; 2066 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2067 ret = EINVAL; 2068 break; 2069 #ifdef OSSV4_EXPERIMENT 2070 /* 2071 * XXX The following ioctls are not yet supported and just return 2072 * EINVAL. 2073 */ 2074 case SNDCTL_DSP_GETOPEAKS: 2075 case SNDCTL_DSP_GETIPEAKS: 2076 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2077 if (chn == NULL) 2078 ret = EINVAL; 2079 else { 2080 oss_peaks_t *op = (oss_peaks_t *)arg; 2081 int lpeak, rpeak; 2082 2083 CHN_LOCK(chn); 2084 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2085 if (ret == -1) 2086 ret = EINVAL; 2087 else { 2088 (*op)[0] = lpeak; 2089 (*op)[1] = rpeak; 2090 } 2091 CHN_UNLOCK(chn); 2092 } 2093 break; 2094 2095 /* 2096 * XXX Once implemented, revisit this for proper cv protection 2097 * (if necessary). 2098 */ 2099 case SNDCTL_GETLABEL: 2100 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2101 break; 2102 case SNDCTL_SETLABEL: 2103 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2104 break; 2105 case SNDCTL_GETSONG: 2106 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2107 break; 2108 case SNDCTL_SETSONG: 2109 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2110 break; 2111 case SNDCTL_SETNAME: 2112 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2113 break; 2114 #if 0 2115 /** 2116 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2117 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2118 * 4Front Technologies. 2119 */ 2120 case SNDCTL_DSP_READCTL: 2121 case SNDCTL_DSP_WRITECTL: 2122 ret = EINVAL; 2123 break; 2124 #endif /* !0 (explicitly omitted ioctls) */ 2125 2126 #endif /* !OSSV4_EXPERIMENT */ 2127 case SNDCTL_DSP_MAPINBUF: 2128 case SNDCTL_DSP_MAPOUTBUF: 2129 case SNDCTL_DSP_SETSYNCRO: 2130 /* undocumented */ 2131 2132 case SNDCTL_DSP_SUBDIVIDE: 2133 case SOUND_PCM_WRITE_FILTER: 2134 case SOUND_PCM_READ_FILTER: 2135 /* dunno what these do, don't sound important */ 2136 2137 default: 2138 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2139 ret = EINVAL; 2140 break; 2141 } 2142 2143 PCM_GIANT_LEAVE(d); 2144 2145 return (ret); 2146 } 2147 2148 static int 2149 dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2150 { 2151 struct snddev_info *d; 2152 struct pcm_channel *wrch, *rdch; 2153 int ret, e; 2154 2155 d = dsp_get_info(i_dev); 2156 if (!DSP_REGISTERED(d, i_dev)) 2157 return (EBADF); 2158 2159 PCM_GIANT_ENTER(d); 2160 2161 wrch = NULL; 2162 rdch = NULL; 2163 ret = 0; 2164 2165 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2166 2167 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2168 e = (events & (POLLOUT | POLLWRNORM)); 2169 if (e) 2170 ret |= chn_poll(wrch, e, td); 2171 } 2172 2173 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2174 e = (events & (POLLIN | POLLRDNORM)); 2175 if (e) 2176 ret |= chn_poll(rdch, e, td); 2177 } 2178 2179 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2180 2181 PCM_GIANT_LEAVE(d); 2182 2183 return (ret); 2184 } 2185 2186 static int 2187 dsp_mmap(struct cdev *i_dev, vm_offset_t offset, vm_paddr_t *paddr, int nprot) 2188 { 2189 struct snddev_info *d; 2190 struct pcm_channel *wrch, *rdch, *c; 2191 2192 /* 2193 * Reject PROT_EXEC by default. It just doesn't makes sense. 2194 * Unfortunately, we have to give up this one due to linux_mmap 2195 * changes. 2196 * 2197 * http://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2198 * 2199 */ 2200 #ifdef SV_ABI_LINUX 2201 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2202 (dsp_mmap_allow_prot_exec == 0 && 2203 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2204 #else 2205 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2206 #endif 2207 return (-1); 2208 2209 d = dsp_get_info(i_dev); 2210 if (!DSP_REGISTERED(d, i_dev)) 2211 return (-1); 2212 2213 PCM_GIANT_ENTER(d); 2214 2215 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2216 2217 /* 2218 * XXX The linux api uses the nprot to select read/write buffer 2219 * our vm system doesn't allow this, so force write buffer. 2220 * 2221 * This is just a quack to fool full-duplex mmap, so that at 2222 * least playback _or_ recording works. If you really got the 2223 * urge to make _both_ work at the same time, avoid O_RDWR. 2224 * Just open each direction separately and mmap() it. 2225 * 2226 * Failure is not an option due to INVARIANTS check within 2227 * device_pager.c, which means, we have to give up one over 2228 * another. 2229 */ 2230 c = (wrch != NULL) ? wrch : rdch; 2231 2232 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2233 offset >= sndbuf_getsize(c->bufsoft) || 2234 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2235 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2236 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2237 PCM_GIANT_EXIT(d); 2238 return (-1); 2239 } 2240 2241 /* XXX full-duplex quack. */ 2242 if (wrch != NULL) 2243 wrch->flags |= CHN_F_MMAP; 2244 if (rdch != NULL) 2245 rdch->flags |= CHN_F_MMAP; 2246 2247 *paddr = vtophys(sndbuf_getbufofs(c->bufsoft, offset)); 2248 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2249 2250 PCM_GIANT_LEAVE(d); 2251 2252 return (0); 2253 } 2254 2255 /* So much for dev_stdclone() */ 2256 static int 2257 dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2258 { 2259 size_t len; 2260 2261 len = strlen(namep); 2262 2263 if (bcmp(name, namep, len) != 0) 2264 return (ENODEV); 2265 2266 name += len; 2267 2268 if (isdigit(*name) == 0) 2269 return (ENODEV); 2270 2271 len = strlen(sep); 2272 2273 if (*name == '' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2274 return (ENODEV); 2275 2276 for (*u = 0; isdigit(*name) != 0; name++) { 2277 *u *= 10; 2278 *u += *name - ''; 2279 if (*u > dsp_umax) 2280 return (ENODEV); 2281 } 2282 2283 if (*name == '\0') 2284 return ((use_sep == 0) ? 0 : ENODEV); 2285 2286 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2287 return (ENODEV); 2288 2289 name += len; 2290 2291 if (*name == '' && name[1] != '\0') 2292 return (ENODEV); 2293 2294 for (*c = 0; isdigit(*name) != 0; name++) { 2295 *c *= 10; 2296 *c += *name - ''; 2297 if (*c > dsp_cmax) 2298 return (ENODEV); 2299 } 2300 2301 if (*name != '\0') 2302 return (ENODEV); 2303 2304 return (0); 2305 } 2306 2307 static void 2308 dsp_clone(void *arg, 2309 #if __FreeBSD_version >= 600034 2310 struct ucred *cred, 2311 #endif 2312 char *name, int namelen, struct cdev **dev) 2313 { 2314 struct snddev_info *d; 2315 struct snd_clone_entry *ce; 2316 struct pcm_channel *c; 2317 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2318 char *devname, *devcmp, *devsep; 2319 2320 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2321 2322 if (*dev != NULL) 2323 return; 2324 2325 unit = -1; 2326 cunit = -1; 2327 devtype = -1; 2328 devhw = 0; 2329 devcmax = -1; 2330 tumax = -1; 2331 devname = NULL; 2332 devsep = NULL; 2333 2334 for (i = 0; unit == -1 && 2335 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2336 devtype = dsp_cdevs[i].type; 2337 devcmp = dsp_cdevs[i].name; 2338 devsep = dsp_cdevs[i].sep; 2339 devname = dsp_cdevs[i].alias; 2340 if (devname == NULL) 2341 devname = devcmp; 2342 devhw = dsp_cdevs[i].hw; 2343 devcmax = dsp_cdevs[i].max - 1; 2344 if (strcmp(name, devcmp) == 0) 2345 unit = snd_unit; 2346 else if (dsp_stdclone(name, devcmp, devsep, 2347 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2348 unit = -1; 2349 cunit = -1; 2350 } 2351 } 2352 2353 d = devclass_get_softc(pcm_devclass, unit); 2354 if (!PCM_REGISTERED(d) || d->clones == NULL) 2355 return; 2356 2357 /* XXX Need Giant magic entry ??? */ 2358 2359 PCM_LOCK(d); 2360 if (snd_clone_disabled(d->clones)) { 2361 PCM_UNLOCK(d); 2362 return; 2363 } 2364 2365 PCM_WAIT(d); 2366 PCM_ACQUIRE(d); 2367 PCM_UNLOCK(d); 2368 2369 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2370 2371 if (devhw != 0) { 2372 KASSERT(devcmax <= dsp_cmax, 2373 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2374 if (cunit > devcmax) { 2375 PCM_RELEASE_QUICK(d); 2376 return; 2377 } 2378 udcmask |= snd_c2unit(cunit); 2379 CHN_FOREACH(c, d, channels.pcm) { 2380 CHN_LOCK(c); 2381 if (c->unit != udcmask) { 2382 CHN_UNLOCK(c); 2383 continue; 2384 } 2385 CHN_UNLOCK(c); 2386 udcmask &= ~snd_c2unit(cunit); 2387 /* 2388 * Temporarily increase clone maxunit to overcome 2389 * vchan flexibility. 2390 * 2391 * # sysctl dev.pcm.0.play.vchans=256 2392 * dev.pcm.0.play.vchans: 1 -> 256 2393 * # cat /dev/zero > /dev/dsp0.vp255 & 2394 * [1] 17296 2395 * # sysctl dev.pcm.0.play.vchans=0 2396 * dev.pcm.0.play.vchans: 256 -> 1 2397 * # fg 2398 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2399 * ^C 2400 * # cat /dev/zero > /dev/dsp0.vp255 2401 * zsh: operation not supported: /dev/dsp0.vp255 2402 */ 2403 tumax = snd_clone_getmaxunit(d->clones); 2404 if (cunit > tumax) 2405 snd_clone_setmaxunit(d->clones, cunit); 2406 else 2407 tumax = -1; 2408 goto dsp_clone_alloc; 2409 } 2410 /* 2411 * Ok, so we're requesting unallocated vchan, but still 2412 * within maximum vchan limit. 2413 */ 2414 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2415 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2416 cunit < snd_maxautovchans) { 2417 udcmask &= ~snd_c2unit(cunit); 2418 tumax = snd_clone_getmaxunit(d->clones); 2419 if (cunit > tumax) 2420 snd_clone_setmaxunit(d->clones, cunit); 2421 else 2422 tumax = -1; 2423 goto dsp_clone_alloc; 2424 } 2425 PCM_RELEASE_QUICK(d); 2426 return; 2427 } 2428 2429 dsp_clone_alloc: 2430 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2431 if (tumax != -1) 2432 snd_clone_setmaxunit(d->clones, tumax); 2433 if (ce != NULL) { 2434 udcmask |= snd_c2unit(cunit); 2435 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2436 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2437 devname, unit, devsep, cunit); 2438 snd_clone_register(ce, *dev); 2439 } 2440 2441 PCM_RELEASE_QUICK(d); 2442 2443 if (*dev != NULL) 2444 dev_ref(*dev); 2445 } 2446 2447 static void 2448 dsp_sysinit(void *p) 2449 { 2450 if (dsp_ehtag != NULL) 2451 return; 2452 /* initialize unit numbering */ 2453 snd_unit_init(); 2454 dsp_umax = PCMMAXUNIT; 2455 dsp_cmax = PCMMAXCHAN; 2456 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2457 } 2458 2459 static void 2460 dsp_sysuninit(void *p) 2461 { 2462 if (dsp_ehtag == NULL) 2463 return; 2464 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2465 dsp_ehtag = NULL; 2466 } 2467 2468 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2469 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2470 2471 char * 2472 dsp_unit2name(char *buf, size_t len, int unit) 2473 { 2474 int i, dtype; 2475 2476 KASSERT(buf != NULL && len != 0, 2477 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2478 2479 dtype = snd_unit2d(unit); 2480 2481 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2482 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2483 continue; 2484 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2485 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2486 return (buf); 2487 } 2488 2489 return (NULL); 2490 } 2491 2492 /** 2493 * @brief Handler for SNDCTL_AUDIOINFO. 2494 * 2495 * Gathers information about the audio device specified in ai->dev. If 2496 * ai->dev == -1, then this function gathers information about the current 2497 * device. If the call comes in on a non-audio device and ai->dev == -1, 2498 * return EINVAL. 2499 * 2500 * This routine is supposed to go practically straight to the hardware, 2501 * getting capabilities directly from the sound card driver, side-stepping 2502 * the intermediate channel interface. 2503 * 2504 * Note, however, that the usefulness of this command is significantly 2505 * decreased when requesting info about any device other than the one serving 2506 * the request. While each snddev_channel refers to a specific device node, 2507 * the converse is *not* true. Currently, when a sound device node is opened, 2508 * the sound subsystem scans for an available audio channel (or channels, if 2509 * opened in read+write) and then assigns them to the si_drv[12] private 2510 * data fields. As a result, any information returned linking a channel to 2511 * a specific character device isn't necessarily accurate. 2512 * 2513 * @note 2514 * Calling threads must not hold any snddev_info or pcm_channel locks. 2515 * 2516 * @param dev device on which the ioctl was issued 2517 * @param ai ioctl request data container 2518 * 2519 * @retval 0 success 2520 * @retval EINVAL ai->dev specifies an invalid device 2521 * 2522 * @todo Verify correctness of Doxygen tags. ;) 2523 */ 2524 int 2525 dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2526 { 2527 struct pcmchan_caps *caps; 2528 struct pcm_channel *ch; 2529 struct snddev_info *d; 2530 uint32_t fmts; 2531 int i, nchan, *rates, minch, maxch; 2532 char *devname, buf[CHN_NAMELEN]; 2533 2534 /* 2535 * If probing the device that received the ioctl, make sure it's a 2536 * DSP device. (Users may use this ioctl with /dev/mixer and 2537 * /dev/midi.) 2538 */ 2539 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2540 return (EINVAL); 2541 2542 ch = NULL; 2543 devname = NULL; 2544 nchan = 0; 2545 bzero(buf, sizeof(buf)); 2546 2547 /* 2548 * Search for the requested audio device (channel). Start by 2549 * iterating over pcm devices. 2550 */ 2551 for (i = 0; pcm_devclass != NULL && 2552 i < devclass_get_maxunit(pcm_devclass); i++) { 2553 d = devclass_get_softc(pcm_devclass, i); 2554 if (!PCM_REGISTERED(d)) 2555 continue; 2556 2557 /* XXX Need Giant magic entry ??? */ 2558 2559 /* See the note in function docblock */ 2560 PCM_UNLOCKASSERT(d); 2561 PCM_LOCK(d); 2562 2563 CHN_FOREACH(ch, d, channels.pcm) { 2564 CHN_UNLOCKASSERT(ch); 2565 CHN_LOCK(ch); 2566 if (ai->dev == -1) { 2567 if (DSP_REGISTERED(d, i_dev) && 2568 (ch == PCM_RDCH(i_dev) || /* record ch */ 2569 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2570 devname = dsp_unit2name(buf, 2571 sizeof(buf), ch->unit); 2572 } 2573 } else if (ai->dev == nchan) { 2574 devname = dsp_unit2name(buf, sizeof(buf), 2575 ch->unit); 2576 } 2577 if (devname != NULL) 2578 break; 2579 CHN_UNLOCK(ch); 2580 ++nchan; 2581 } 2582 2583 if (devname != NULL) { 2584 /* 2585 * At this point, the following synchronization stuff 2586 * has happened: 2587 * - a specific PCM device is locked. 2588 * - a specific audio channel has been locked, so be 2589 * sure to unlock when exiting; 2590 */ 2591 2592 caps = chn_getcaps(ch); 2593 2594 /* 2595 * With all handles collected, zero out the user's 2596 * container and begin filling in its fields. 2597 */ 2598 bzero((void *)ai, sizeof(oss_audioinfo)); 2599 2600 ai->dev = nchan; 2601 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2602 2603 if ((ch->flags & CHN_F_BUSY) == 0) 2604 ai->busy = 0; 2605 else 2606 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2607 2608 /** 2609 * @note 2610 * @c cmd - OSSv4 docs: "Only supported under Linux at 2611 * this moment." Cop-out, I know, but I'll save 2612 * running around in the process table for later. 2613 * Is there a risk of leaking information? 2614 */ 2615 ai->pid = ch->pid; 2616 2617 /* 2618 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2619 * Note, however, that a single channel operates in 2620 * only one direction, so PCM_CAP_DUPLEX is out. 2621 */ 2622 /** 2623 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2624 * these in pcmchan::caps? 2625 */ 2626 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2627 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2628 2629 /* 2630 * Collect formats supported @b natively by the 2631 * device. Also determine min/max channels. (I.e., 2632 * mono, stereo, or both?) 2633 * 2634 * If any channel is stereo, maxch = 2; 2635 * if all channels are stereo, minch = 2, too; 2636 * if any channel is mono, minch = 1; 2637 * and if all channels are mono, maxch = 1. 2638 */ 2639 minch = 0; 2640 maxch = 0; 2641 fmts = 0; 2642 for (i = 0; caps->fmtlist[i]; i++) { 2643 fmts |= caps->fmtlist[i]; 2644 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2645 minch = (minch == 0) ? 2 : minch; 2646 maxch = 2; 2647 } else { 2648 minch = 1; 2649 maxch = (maxch == 0) ? 1 : maxch; 2650 } 2651 } 2652 2653 if (ch->direction == PCMDIR_PLAY) 2654 ai->oformats = fmts; 2655 else 2656 ai->iformats = fmts; 2657 2658 /** 2659 * @note 2660 * @c magic - OSSv4 docs: "Reserved for internal use 2661 * by OSS." 2662 * 2663 * @par 2664 * @c card_number - OSSv4 docs: "Number of the sound 2665 * card where this device belongs or -1 if this 2666 * information is not available. Applications 2667 * should normally not use this field for any 2668 * purpose." 2669 */ 2670 ai->card_number = -1; 2671 /** 2672 * @todo @c song_name - depends first on 2673 * SNDCTL_[GS]ETSONG @todo @c label - depends 2674 * on SNDCTL_[GS]ETLABEL 2675 * @todo @c port_number - routing information? 2676 */ 2677 ai->port_number = -1; 2678 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2679 /** 2680 * @note 2681 * @c real_device - OSSv4 docs: "Obsolete." 2682 */ 2683 ai->real_device = -1; 2684 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2685 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2686 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2687 /** 2688 * @note 2689 * @c flags - OSSv4 docs: "Reserved for future use." 2690 * 2691 * @note 2692 * @c binding - OSSv4 docs: "Reserved for future use." 2693 * 2694 * @todo @c handle - haven't decided how to generate 2695 * this yet; bus, vendor, device IDs? 2696 */ 2697 ai->min_rate = caps->minspeed; 2698 ai->max_rate = caps->maxspeed; 2699 2700 ai->min_channels = minch; 2701 ai->max_channels = maxch; 2702 2703 ai->nrates = chn_getrates(ch, &rates); 2704 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2705 ai->nrates = OSS_MAX_SAMPLE_RATES; 2706 2707 for (i = 0; i < ai->nrates; i++) 2708 ai->rates[i] = rates[i]; 2709 2710 ai->next_play_engine = 0; 2711 ai->next_rec_engine = 0; 2712 2713 CHN_UNLOCK(ch); 2714 } 2715 2716 PCM_UNLOCK(d); 2717 2718 if (devname != NULL) 2719 return (0); 2720 } 2721 2722 /* Exhausted the search -- nothing is locked, so return. */ 2723 return (EINVAL); 2724 } 2725 2726 /** 2727 * @brief Assigns a PCM channel to a sync group. 2728 * 2729 * Sync groups are used to enable audio operations on multiple devices 2730 * simultaneously. They may be used with any number of devices and may 2731 * span across applications. Devices are added to groups with 2732 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2733 * SNDCTL_DSP_SYNCSTART ioctl. 2734 * 2735 * If the @c id field of the @c group parameter is set to zero, then a new 2736 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2737 * the group specified. 2738 * 2739 * @todo As far as memory allocation, should we assume that things are 2740 * okay and allocate with M_WAITOK before acquiring channel locks, 2741 * freeing later if not? 2742 * 2743 * @param wrch output channel associated w/ device (if any) 2744 * @param rdch input channel associated w/ device (if any) 2745 * @param group Sync group parameters 2746 * 2747 * @retval 0 success 2748 * @retval non-zero error to be propagated upstream 2749 */ 2750 static int 2751 dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2752 { 2753 struct pcmchan_syncmember *smrd, *smwr; 2754 struct pcmchan_syncgroup *sg; 2755 int ret, sg_ids[3]; 2756 2757 smrd = NULL; 2758 smwr = NULL; 2759 sg = NULL; 2760 ret = 0; 2761 2762 /* 2763 * Free_unr() may sleep, so store released syncgroup IDs until after 2764 * all locks are released. 2765 */ 2766 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2767 2768 PCM_SG_LOCK(); 2769 2770 /* 2771 * - Insert channel(s) into group's member list. 2772 * - Set CHN_F_NOTRIGGER on channel(s). 2773 * - Stop channel(s). 2774 */ 2775 2776 /* 2777 * If device's channels are already mapped to a group, unmap them. 2778 */ 2779 if (wrch) { 2780 CHN_LOCK(wrch); 2781 sg_ids[0] = chn_syncdestroy(wrch); 2782 } 2783 2784 if (rdch) { 2785 CHN_LOCK(rdch); 2786 sg_ids[1] = chn_syncdestroy(rdch); 2787 } 2788 2789 /* 2790 * Verify that mode matches character device properites. 2791 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2792 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2793 */ 2794 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2795 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2796 ret = EINVAL; 2797 goto out; 2798 } 2799 2800 /* 2801 * An id of zero indicates the user wants to create a new 2802 * syncgroup. 2803 */ 2804 if (group->id == 0) { 2805 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2806 if (sg != NULL) { 2807 SLIST_INIT(&sg->members); 2808 sg->id = alloc_unr(pcmsg_unrhdr); 2809 2810 group->id = sg->id; 2811 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2812 } else 2813 ret = ENOMEM; 2814 } else { 2815 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2816 if (sg->id == group->id) 2817 break; 2818 } 2819 if (sg == NULL) 2820 ret = EINVAL; 2821 } 2822 2823 /* Couldn't create or find a syncgroup. Fail. */ 2824 if (sg == NULL) 2825 goto out; 2826 2827 /* 2828 * Allocate a syncmember, assign it and a channel together, and 2829 * insert into syncgroup. 2830 */ 2831 if (group->mode & PCM_ENABLE_INPUT) { 2832 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2833 if (smrd == NULL) { 2834 ret = ENOMEM; 2835 goto out; 2836 } 2837 2838 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2839 smrd->parent = sg; 2840 smrd->ch = rdch; 2841 2842 chn_abort(rdch); 2843 rdch->flags |= CHN_F_NOTRIGGER; 2844 rdch->sm = smrd; 2845 } 2846 2847 if (group->mode & PCM_ENABLE_OUTPUT) { 2848 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2849 if (smwr == NULL) { 2850 ret = ENOMEM; 2851 goto out; 2852 } 2853 2854 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2855 smwr->parent = sg; 2856 smwr->ch = wrch; 2857 2858 chn_abort(wrch); 2859 wrch->flags |= CHN_F_NOTRIGGER; 2860 wrch->sm = smwr; 2861 } 2862 2863 2864 out: 2865 if (ret != 0) { 2866 if (smrd != NULL) 2867 free(smrd, M_DEVBUF); 2868 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2869 sg_ids[2] = sg->id; 2870 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2871 free(sg, M_DEVBUF); 2872 } 2873 2874 if (wrch) 2875 wrch->sm = NULL; 2876 if (rdch) 2877 rdch->sm = NULL; 2878 } 2879 2880 if (wrch) 2881 CHN_UNLOCK(wrch); 2882 if (rdch) 2883 CHN_UNLOCK(rdch); 2884 2885 PCM_SG_UNLOCK(); 2886 2887 if (sg_ids[0]) 2888 free_unr(pcmsg_unrhdr, sg_ids[0]); 2889 if (sg_ids[1]) 2890 free_unr(pcmsg_unrhdr, sg_ids[1]); 2891 if (sg_ids[2]) 2892 free_unr(pcmsg_unrhdr, sg_ids[2]); 2893 2894 return (ret); 2895 } 2896 2897 /** 2898 * @brief Launch a sync group into action 2899 * 2900 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2901 * iterates over all members, triggering them along the way. 2902 * 2903 * @note Caller must not hold any channel locks. 2904 * 2905 * @param sg_id sync group identifier 2906 * 2907 * @retval 0 success 2908 * @retval non-zero error worthy of propagating upstream to user 2909 */ 2910 static int 2911 dsp_oss_syncstart(int sg_id) 2912 { 2913 struct pcmchan_syncmember *sm, *sm_tmp; 2914 struct pcmchan_syncgroup *sg; 2915 struct pcm_channel *c; 2916 int ret, needlocks; 2917 2918 /* Get the synclists lock */ 2919 PCM_SG_LOCK(); 2920 2921 do { 2922 ret = 0; 2923 needlocks = 0; 2924 2925 /* Search for syncgroup by ID */ 2926 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2927 if (sg->id == sg_id) 2928 break; 2929 } 2930 2931 /* Return EINVAL if not found */ 2932 if (sg == NULL) { 2933 ret = EINVAL; 2934 break; 2935 } 2936 2937 /* Any removals resulting in an empty group should've handled this */ 2938 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2939 2940 /* 2941 * Attempt to lock all member channels - if any are already 2942 * locked, unlock those acquired, sleep for a bit, and try 2943 * again. 2944 */ 2945 SLIST_FOREACH(sm, &sg->members, link) { 2946 if (CHN_TRYLOCK(sm->ch) == 0) { 2947 int timo = hz * 5/1000; 2948 if (timo < 1) 2949 timo = 1; 2950 2951 /* Release all locked channels so far, retry */ 2952 SLIST_FOREACH(sm_tmp, &sg->members, link) { 2953 /* sm is the member already locked */ 2954 if (sm == sm_tmp) 2955 break; 2956 CHN_UNLOCK(sm_tmp->ch); 2957 } 2958 2959 /** @todo Is PRIBIO correct/ */ 2960 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 2961 PRIBIO | PCATCH, "pcmsg", timo); 2962 if (ret == EINTR || ret == ERESTART) 2963 break; 2964 2965 needlocks = 1; 2966 ret = 0; /* Assumes ret == EAGAIN... */ 2967 } 2968 } 2969 } while (needlocks && ret == 0); 2970 2971 /* Proceed only if no errors encountered. */ 2972 if (ret == 0) { 2973 /* Launch channels */ 2974 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 2975 SLIST_REMOVE_HEAD(&sg->members, link); 2976 2977 c = sm->ch; 2978 c->sm = NULL; 2979 chn_start(c, 1); 2980 c->flags &= ~CHN_F_NOTRIGGER; 2981 CHN_UNLOCK(c); 2982 2983 free(sm, M_DEVBUF); 2984 } 2985 2986 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2987 free(sg, M_DEVBUF); 2988 } 2989 2990 PCM_SG_UNLOCK(); 2991 2992 /* 2993 * Free_unr() may sleep, so be sure to give up the syncgroup lock 2994 * first. 2995 */ 2996 if (ret == 0) 2997 free_unr(pcmsg_unrhdr, sg_id); 2998 2999 return (ret); 3000 } 3001 3002 /** 3003 * @brief Handler for SNDCTL_DSP_POLICY 3004 * 3005 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3006 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3007 * specifying those two parameters, s/he simply selects a number from 0..10 3008 * which corresponds to a buffer size. Smaller numbers request smaller 3009 * buffers with lower latencies (at greater overhead from more frequent 3010 * interrupts), while greater numbers behave in the opposite manner. 3011 * 3012 * The 4Front spec states that a value of 5 should be the default. However, 3013 * this implementation deviates slightly by using a linear scale without 3014 * consulting drivers. I.e., even though drivers may have different default 3015 * buffer sizes, a policy argument of 5 will have the same result across 3016 * all drivers. 3017 * 3018 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3019 * more information. 3020 * 3021 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3022 * work with hardware drivers directly. 3023 * 3024 * @note PCM channel arguments must not be locked by caller. 3025 * 3026 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3027 * @param rdch " recording channel (optional; may be NULL) 3028 * @param policy Integer from [0:10] 3029 * 3030 * @retval 0 constant (for now) 3031 */ 3032 static int 3033 dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3034 { 3035 int ret; 3036 3037 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3038 return (EIO); 3039 3040 /* Default: success */ 3041 ret = 0; 3042 3043 if (rdch) { 3044 CHN_LOCK(rdch); 3045 ret = chn_setlatency(rdch, policy); 3046 CHN_UNLOCK(rdch); 3047 } 3048 3049 if (wrch && ret == 0) { 3050 CHN_LOCK(wrch); 3051 ret = chn_setlatency(wrch, policy); 3052 CHN_UNLOCK(wrch); 3053 } 3054 3055 if (ret) 3056 ret = EIO; 3057 3058 return (ret); 3059 } 3060 3061 /** 3062 * @brief Enable or disable "cooked" mode 3063 * 3064 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3065 * is the default, the sound system handles rate and format conversions 3066 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3067 * operates with 44100Hz/16bit/signed samples). 3068 * 3069 * Disabling cooked mode is intended for applications wanting to mmap() 3070 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3071 * feeder architecture, presumably to gain as much control over audio 3072 * hardware as possible. 3073 * 3074 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3075 * for more details. 3076 * 3077 * @param wrch playback channel (optional; may be NULL) 3078 * @param rdch recording channel (optional; may be NULL) 3079 * @param enabled 0 = raw mode, 1 = cooked mode 3080 * 3081 * @retval EINVAL Operation not yet supported. 3082 */ 3083 static int 3084 dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3085 { 3086 3087 /* 3088 * XXX I just don't get it. Why don't they call it 3089 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3090 * This is just plain so confusing, incoherent, 3091 * <insert any non-printable characters here>. 3092 */ 3093 if (!(enabled == 1 || enabled == 0)) 3094 return (EINVAL); 3095 3096 /* 3097 * I won't give in. I'm inverting its logic here and now. 3098 * Brag all you want, but "BITPERFECT" should be the better 3099 * term here. 3100 */ 3101 enabled ^= 0x00000001; 3102 3103 if (wrch != NULL) { 3104 CHN_LOCK(wrch); 3105 wrch->flags &= ~CHN_F_BITPERFECT; 3106 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3107 CHN_UNLOCK(wrch); 3108 } 3109 3110 if (rdch != NULL) { 3111 CHN_LOCK(rdch); 3112 rdch->flags &= ~CHN_F_BITPERFECT; 3113 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3114 CHN_UNLOCK(rdch); 3115 } 3116 3117 return (0); 3118 } 3119 3120 /** 3121 * @brief Retrieve channel interleaving order 3122 * 3123 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3124 * 3125 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3126 * for more details. 3127 * 3128 * @note As the ioctl definition is still under construction, FreeBSD 3129 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3130 * 3131 * @param wrch playback channel (optional; may be NULL) 3132 * @param rdch recording channel (optional; may be NULL) 3133 * @param map channel map (result will be stored there) 3134 * 3135 * @retval EINVAL Operation not yet supported. 3136 */ 3137 static int 3138 dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3139 { 3140 struct pcm_channel *ch; 3141 int ret; 3142 3143 ch = (wrch != NULL) ? wrch : rdch; 3144 if (ch != NULL) { 3145 CHN_LOCK(ch); 3146 ret = chn_oss_getorder(ch, map); 3147 CHN_UNLOCK(ch); 3148 } else 3149 ret = EINVAL; 3150 3151 return (ret); 3152 } 3153 3154 /** 3155 * @brief Specify channel interleaving order 3156 * 3157 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3158 * 3159 * @note As the ioctl definition is still under construction, FreeBSD 3160 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3161 * 3162 * @param wrch playback channel (optional; may be NULL) 3163 * @param rdch recording channel (optional; may be NULL) 3164 * @param map channel map 3165 * 3166 * @retval EINVAL Operation not yet supported. 3167 */ 3168 static int 3169 dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3170 { 3171 int ret; 3172 3173 ret = 0; 3174 3175 if (wrch != NULL) { 3176 CHN_LOCK(wrch); 3177 ret = chn_oss_setorder(wrch, map); 3178 CHN_UNLOCK(wrch); 3179 } 3180 3181 if (ret == 0 && rdch != NULL) { 3182 CHN_LOCK(rdch); 3183 ret = chn_oss_setorder(rdch, map); 3184 CHN_UNLOCK(rdch); 3185 } 3186 3187 return (ret); 3188 } 3189 3190 static int 3191 dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3192 int *mask) 3193 { 3194 struct pcm_channel *ch; 3195 uint32_t chnmask; 3196 int ret; 3197 3198 chnmask = 0; 3199 ch = (wrch != NULL) ? wrch : rdch; 3200 3201 if (ch != NULL) { 3202 CHN_LOCK(ch); 3203 ret = chn_oss_getmask(ch, &chnmask); 3204 CHN_UNLOCK(ch); 3205 } else 3206 ret = EINVAL; 3207 3208 if (ret == 0) 3209 *mask = chnmask; 3210 3211 return (ret); 3212 } 3213 3214 #ifdef OSSV4_EXPERIMENT 3215 /** 3216 * @brief Retrieve an audio device's label 3217 * 3218 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3219 * 3220 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3221 * for more details. 3222 * 3223 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3224 * consoles) can show variable "labels" for certain controls. By default 3225 * the application name (say quake) is shown as the label but 3226 * applications may change the labels themselves." 3227 * 3228 * @note As the ioctl definition is still under construction, FreeBSD 3229 * does not currently support @c SNDCTL_GETLABEL. 3230 * 3231 * @param wrch playback channel (optional; may be NULL) 3232 * @param rdch recording channel (optional; may be NULL) 3233 * @param label label gets copied here 3234 * 3235 * @retval EINVAL Operation not yet supported. 3236 */ 3237 static int 3238 dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3239 { 3240 return (EINVAL); 3241 } 3242 3243 /** 3244 * @brief Specify an audio device's label 3245 * 3246 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3247 * comments for @c dsp_oss_getlabel immediately above. 3248 * 3249 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3250 * for more details. 3251 * 3252 * @note As the ioctl definition is still under construction, FreeBSD 3253 * does not currently support SNDCTL_SETLABEL. 3254 * 3255 * @param wrch playback channel (optional; may be NULL) 3256 * @param rdch recording channel (optional; may be NULL) 3257 * @param label label gets copied from here 3258 * 3259 * @retval EINVAL Operation not yet supported. 3260 */ 3261 static int 3262 dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3263 { 3264 return (EINVAL); 3265 } 3266 3267 /** 3268 * @brief Retrieve name of currently played song 3269 * 3270 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3271 * tell the system the name of the currently playing song, which would be 3272 * visible in @c /dev/sndstat. 3273 * 3274 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3275 * for more details. 3276 * 3277 * @note As the ioctl definition is still under construction, FreeBSD 3278 * does not currently support SNDCTL_GETSONG. 3279 * 3280 * @param wrch playback channel (optional; may be NULL) 3281 * @param rdch recording channel (optional; may be NULL) 3282 * @param song song name gets copied here 3283 * 3284 * @retval EINVAL Operation not yet supported. 3285 */ 3286 static int 3287 dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3288 { 3289 return (EINVAL); 3290 } 3291 3292 /** 3293 * @brief Retrieve name of currently played song 3294 * 3295 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3296 * tell the system the name of the currently playing song, which would be 3297 * visible in @c /dev/sndstat. 3298 * 3299 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3300 * for more details. 3301 * 3302 * @note As the ioctl definition is still under construction, FreeBSD 3303 * does not currently support SNDCTL_SETSONG. 3304 * 3305 * @param wrch playback channel (optional; may be NULL) 3306 * @param rdch recording channel (optional; may be NULL) 3307 * @param song song name gets copied from here 3308 * 3309 * @retval EINVAL Operation not yet supported. 3310 */ 3311 static int 3312 dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3313 { 3314 return (EINVAL); 3315 } 3316 3317 /** 3318 * @brief Rename a device 3319 * 3320 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3321 * 3322 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3323 * more details. 3324 * 3325 * From Hannu@4Front: "This call is used to change the device name 3326 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3327 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3328 * name depending on the current context (for example 'OSS virtual wave table 3329 * synth' or 'VoIP link to London')." 3330 * 3331 * @note As the ioctl definition is still under construction, FreeBSD 3332 * does not currently support SNDCTL_SETNAME. 3333 * 3334 * @param wrch playback channel (optional; may be NULL) 3335 * @param rdch recording channel (optional; may be NULL) 3336 * @param name new device name gets copied from here 3337 * 3338 * @retval EINVAL Operation not yet supported. 3339 */ 3340 static int 3341 dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3342 { 3343 return (EINVAL); 3344 } 3345 #endif /* !OSSV4_EXPERIMENT */
Cache object: 1319670fa2e6ba03986dcde102719524
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