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("$FreeBSD$"); 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 & MIXER_WRITE(0)) == 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 & MIXER_READ(0)) == 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 & MIXER_READ(0)) == 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 & MIXER_READ(0)) == 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 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1073 if (ret != -1) { 1074 PCM_GIANT_EXIT(d); 1075 return (ret); 1076 } 1077 1078 if (d->mixer_dev != NULL) { 1079 PCM_ACQUIRE_QUICK(d); 1080 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1081 MIXER_CMD_DIRECT); 1082 PCM_RELEASE_QUICK(d); 1083 } else 1084 ret = EBADF; 1085 1086 PCM_GIANT_EXIT(d); 1087 1088 return (ret); 1089 } 1090 1091 /* 1092 * Certain ioctls may be made on any type of device (audio, mixer, 1093 * and MIDI). Handle those special cases here. 1094 */ 1095 if (IOCGROUP(cmd) == 'X') { 1096 PCM_ACQUIRE_QUICK(d); 1097 switch(cmd) { 1098 case SNDCTL_SYSINFO: 1099 sound_oss_sysinfo((oss_sysinfo *)arg); 1100 break; 1101 case SNDCTL_CARDINFO: 1102 ret = sound_oss_card_info((oss_card_info *)arg); 1103 break; 1104 case SNDCTL_AUDIOINFO: 1105 case SNDCTL_AUDIOINFO_EX: 1106 case SNDCTL_ENGINEINFO: 1107 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1108 break; 1109 case SNDCTL_MIXERINFO: 1110 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1111 break; 1112 default: 1113 ret = EINVAL; 1114 } 1115 PCM_RELEASE_QUICK(d); 1116 PCM_GIANT_EXIT(d); 1117 return (ret); 1118 } 1119 1120 getchns(i_dev, &rdch, &wrch, 0); 1121 1122 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1123 wrch = NULL; 1124 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1125 rdch = NULL; 1126 1127 if (wrch == NULL && rdch == NULL) { 1128 PCM_GIANT_EXIT(d); 1129 return (EINVAL); 1130 } 1131 1132 switch(cmd) { 1133 #ifdef OLDPCM_IOCTL 1134 /* 1135 * we start with the new ioctl interface. 1136 */ 1137 case AIONWRITE: /* how many bytes can write ? */ 1138 if (wrch) { 1139 CHN_LOCK(wrch); 1140 /* 1141 if (wrch && wrch->bufhard.dl) 1142 while (chn_wrfeed(wrch) == 0); 1143 */ 1144 *arg_i = sndbuf_getfree(wrch->bufsoft); 1145 CHN_UNLOCK(wrch); 1146 } else { 1147 *arg_i = 0; 1148 ret = EINVAL; 1149 } 1150 break; 1151 1152 case AIOSSIZE: /* set the current blocksize */ 1153 { 1154 struct snd_size *p = (struct snd_size *)arg; 1155 1156 p->play_size = 0; 1157 p->rec_size = 0; 1158 PCM_ACQUIRE_QUICK(d); 1159 if (wrch) { 1160 CHN_LOCK(wrch); 1161 chn_setblocksize(wrch, 2, p->play_size); 1162 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1163 CHN_UNLOCK(wrch); 1164 } 1165 if (rdch) { 1166 CHN_LOCK(rdch); 1167 chn_setblocksize(rdch, 2, p->rec_size); 1168 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1169 CHN_UNLOCK(rdch); 1170 } 1171 PCM_RELEASE_QUICK(d); 1172 } 1173 break; 1174 case AIOGSIZE: /* get the current blocksize */ 1175 { 1176 struct snd_size *p = (struct snd_size *)arg; 1177 1178 if (wrch) { 1179 CHN_LOCK(wrch); 1180 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1181 CHN_UNLOCK(wrch); 1182 } 1183 if (rdch) { 1184 CHN_LOCK(rdch); 1185 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1186 CHN_UNLOCK(rdch); 1187 } 1188 } 1189 break; 1190 1191 case AIOSFMT: 1192 case AIOGFMT: 1193 { 1194 snd_chan_param *p = (snd_chan_param *)arg; 1195 1196 if (cmd == AIOSFMT && 1197 ((p->play_format != 0 && p->play_rate == 0) || 1198 (p->rec_format != 0 && p->rec_rate == 0))) { 1199 ret = EINVAL; 1200 break; 1201 } 1202 PCM_ACQUIRE_QUICK(d); 1203 if (wrch) { 1204 CHN_LOCK(wrch); 1205 if (cmd == AIOSFMT && p->play_format != 0) { 1206 chn_setformat(wrch, 1207 SND_FORMAT(p->play_format, 1208 AFMT_CHANNEL(wrch->format), 1209 AFMT_EXTCHANNEL(wrch->format))); 1210 chn_setspeed(wrch, p->play_rate); 1211 } 1212 p->play_rate = wrch->speed; 1213 p->play_format = AFMT_ENCODING(wrch->format); 1214 CHN_UNLOCK(wrch); 1215 } else { 1216 p->play_rate = 0; 1217 p->play_format = 0; 1218 } 1219 if (rdch) { 1220 CHN_LOCK(rdch); 1221 if (cmd == AIOSFMT && p->rec_format != 0) { 1222 chn_setformat(rdch, 1223 SND_FORMAT(p->rec_format, 1224 AFMT_CHANNEL(rdch->format), 1225 AFMT_EXTCHANNEL(rdch->format))); 1226 chn_setspeed(rdch, p->rec_rate); 1227 } 1228 p->rec_rate = rdch->speed; 1229 p->rec_format = AFMT_ENCODING(rdch->format); 1230 CHN_UNLOCK(rdch); 1231 } else { 1232 p->rec_rate = 0; 1233 p->rec_format = 0; 1234 } 1235 PCM_RELEASE_QUICK(d); 1236 } 1237 break; 1238 1239 case AIOGCAP: /* get capabilities */ 1240 { 1241 snd_capabilities *p = (snd_capabilities *)arg; 1242 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1243 struct cdev *pdev; 1244 1245 PCM_LOCK(d); 1246 if (rdch) { 1247 CHN_LOCK(rdch); 1248 rcaps = chn_getcaps(rdch); 1249 } 1250 if (wrch) { 1251 CHN_LOCK(wrch); 1252 pcaps = chn_getcaps(wrch); 1253 } 1254 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1255 pcaps? pcaps->minspeed : 0); 1256 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1257 pcaps? pcaps->maxspeed : 1000000); 1258 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1259 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1260 /* XXX bad on sb16 */ 1261 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1262 (wrch? chn_getformats(wrch) : 0xffffffff); 1263 if (rdch && wrch) 1264 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1265 pdev = d->mixer_dev; 1266 p->mixers = 1; /* default: one mixer */ 1267 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1268 p->left = p->right = 100; 1269 if (wrch) 1270 CHN_UNLOCK(wrch); 1271 if (rdch) 1272 CHN_UNLOCK(rdch); 1273 PCM_UNLOCK(d); 1274 } 1275 break; 1276 1277 case AIOSTOP: 1278 if (*arg_i == AIOSYNC_PLAY && wrch) { 1279 CHN_LOCK(wrch); 1280 *arg_i = chn_abort(wrch); 1281 CHN_UNLOCK(wrch); 1282 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1283 CHN_LOCK(rdch); 1284 *arg_i = chn_abort(rdch); 1285 CHN_UNLOCK(rdch); 1286 } else { 1287 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1288 *arg_i = 0; 1289 } 1290 break; 1291 1292 case AIOSYNC: 1293 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1294 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1295 break; 1296 #endif 1297 /* 1298 * here follow the standard ioctls (filio.h etc.) 1299 */ 1300 case FIONREAD: /* get # bytes to read */ 1301 if (rdch) { 1302 CHN_LOCK(rdch); 1303 /* if (rdch && rdch->bufhard.dl) 1304 while (chn_rdfeed(rdch) == 0); 1305 */ 1306 *arg_i = sndbuf_getready(rdch->bufsoft); 1307 CHN_UNLOCK(rdch); 1308 } else { 1309 *arg_i = 0; 1310 ret = EINVAL; 1311 } 1312 break; 1313 1314 case FIOASYNC: /*set/clear async i/o */ 1315 DEB( printf("FIOASYNC\n") ; ) 1316 break; 1317 1318 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1319 case FIONBIO: /* set/clear non-blocking i/o */ 1320 if (rdch) { 1321 CHN_LOCK(rdch); 1322 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1323 rdch->flags |= CHN_F_NBIO; 1324 else 1325 rdch->flags &= ~CHN_F_NBIO; 1326 CHN_UNLOCK(rdch); 1327 } 1328 if (wrch) { 1329 CHN_LOCK(wrch); 1330 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1331 wrch->flags |= CHN_F_NBIO; 1332 else 1333 wrch->flags &= ~CHN_F_NBIO; 1334 CHN_UNLOCK(wrch); 1335 } 1336 break; 1337 1338 /* 1339 * Finally, here is the linux-compatible ioctl interface 1340 */ 1341 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1342 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1343 case SNDCTL_DSP_GETBLKSIZE: 1344 chn = wrch ? wrch : rdch; 1345 if (chn) { 1346 CHN_LOCK(chn); 1347 *arg_i = sndbuf_getblksz(chn->bufsoft); 1348 CHN_UNLOCK(chn); 1349 } else { 1350 *arg_i = 0; 1351 ret = EINVAL; 1352 } 1353 break; 1354 1355 case SNDCTL_DSP_SETBLKSIZE: 1356 RANGE(*arg_i, 16, 65536); 1357 PCM_ACQUIRE_QUICK(d); 1358 if (wrch) { 1359 CHN_LOCK(wrch); 1360 chn_setblocksize(wrch, 2, *arg_i); 1361 CHN_UNLOCK(wrch); 1362 } 1363 if (rdch) { 1364 CHN_LOCK(rdch); 1365 chn_setblocksize(rdch, 2, *arg_i); 1366 CHN_UNLOCK(rdch); 1367 } 1368 PCM_RELEASE_QUICK(d); 1369 break; 1370 1371 case SNDCTL_DSP_RESET: 1372 DEB(printf("dsp reset\n")); 1373 if (wrch) { 1374 CHN_LOCK(wrch); 1375 chn_abort(wrch); 1376 chn_resetbuf(wrch); 1377 CHN_UNLOCK(wrch); 1378 } 1379 if (rdch) { 1380 CHN_LOCK(rdch); 1381 chn_abort(rdch); 1382 chn_resetbuf(rdch); 1383 CHN_UNLOCK(rdch); 1384 } 1385 break; 1386 1387 case SNDCTL_DSP_SYNC: 1388 DEB(printf("dsp sync\n")); 1389 /* chn_sync may sleep */ 1390 if (wrch) { 1391 CHN_LOCK(wrch); 1392 chn_sync(wrch, 0); 1393 CHN_UNLOCK(wrch); 1394 } 1395 break; 1396 1397 case SNDCTL_DSP_SPEED: 1398 /* chn_setspeed may sleep */ 1399 tmp = 0; 1400 PCM_ACQUIRE_QUICK(d); 1401 if (wrch) { 1402 CHN_LOCK(wrch); 1403 ret = chn_setspeed(wrch, *arg_i); 1404 tmp = wrch->speed; 1405 CHN_UNLOCK(wrch); 1406 } 1407 if (rdch && ret == 0) { 1408 CHN_LOCK(rdch); 1409 ret = chn_setspeed(rdch, *arg_i); 1410 if (tmp == 0) 1411 tmp = rdch->speed; 1412 CHN_UNLOCK(rdch); 1413 } 1414 PCM_RELEASE_QUICK(d); 1415 *arg_i = tmp; 1416 break; 1417 1418 case SOUND_PCM_READ_RATE: 1419 chn = wrch ? wrch : rdch; 1420 if (chn) { 1421 CHN_LOCK(chn); 1422 *arg_i = chn->speed; 1423 CHN_UNLOCK(chn); 1424 } else { 1425 *arg_i = 0; 1426 ret = EINVAL; 1427 } 1428 break; 1429 1430 case SNDCTL_DSP_STEREO: 1431 tmp = -1; 1432 *arg_i = (*arg_i)? 2 : 1; 1433 PCM_ACQUIRE_QUICK(d); 1434 if (wrch) { 1435 CHN_LOCK(wrch); 1436 ret = chn_setformat(wrch, 1437 SND_FORMAT(wrch->format, *arg_i, 0)); 1438 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1439 CHN_UNLOCK(wrch); 1440 } 1441 if (rdch && ret == 0) { 1442 CHN_LOCK(rdch); 1443 ret = chn_setformat(rdch, 1444 SND_FORMAT(rdch->format, *arg_i, 0)); 1445 if (tmp == -1) 1446 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1447 CHN_UNLOCK(rdch); 1448 } 1449 PCM_RELEASE_QUICK(d); 1450 *arg_i = tmp; 1451 break; 1452 1453 case SOUND_PCM_WRITE_CHANNELS: 1454 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1455 if (*arg_i < 0) { 1456 *arg_i = 0; 1457 ret = EINVAL; 1458 break; 1459 } 1460 if (*arg_i != 0) { 1461 struct pcmchan_matrix *m; 1462 uint32_t ext; 1463 1464 tmp = 0; 1465 if (*arg_i > SND_CHN_MAX) 1466 *arg_i = SND_CHN_MAX; 1467 1468 m = feeder_matrix_default_channel_map(*arg_i); 1469 if (m != NULL) 1470 ext = m->ext; 1471 else 1472 ext = 0; 1473 1474 PCM_ACQUIRE_QUICK(d); 1475 if (wrch) { 1476 CHN_LOCK(wrch); 1477 ret = chn_setformat(wrch, 1478 SND_FORMAT(wrch->format, *arg_i, ext)); 1479 tmp = AFMT_CHANNEL(wrch->format); 1480 CHN_UNLOCK(wrch); 1481 } 1482 if (rdch && ret == 0) { 1483 CHN_LOCK(rdch); 1484 ret = chn_setformat(rdch, 1485 SND_FORMAT(rdch->format, *arg_i, ext)); 1486 if (tmp == 0) 1487 tmp = AFMT_CHANNEL(rdch->format); 1488 CHN_UNLOCK(rdch); 1489 } 1490 PCM_RELEASE_QUICK(d); 1491 *arg_i = tmp; 1492 } else { 1493 chn = wrch ? wrch : rdch; 1494 CHN_LOCK(chn); 1495 *arg_i = AFMT_CHANNEL(chn->format); 1496 CHN_UNLOCK(chn); 1497 } 1498 break; 1499 1500 case SOUND_PCM_READ_CHANNELS: 1501 chn = wrch ? wrch : rdch; 1502 if (chn) { 1503 CHN_LOCK(chn); 1504 *arg_i = AFMT_CHANNEL(chn->format); 1505 CHN_UNLOCK(chn); 1506 } else { 1507 *arg_i = 0; 1508 ret = EINVAL; 1509 } 1510 break; 1511 1512 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1513 chn = wrch ? wrch : rdch; 1514 if (chn) { 1515 CHN_LOCK(chn); 1516 *arg_i = chn_getformats(chn); 1517 CHN_UNLOCK(chn); 1518 } else { 1519 *arg_i = 0; 1520 ret = EINVAL; 1521 } 1522 break; 1523 1524 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1525 if (*arg_i != AFMT_QUERY) { 1526 tmp = 0; 1527 PCM_ACQUIRE_QUICK(d); 1528 if (wrch) { 1529 CHN_LOCK(wrch); 1530 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1531 AFMT_CHANNEL(wrch->format), 1532 AFMT_EXTCHANNEL(wrch->format))); 1533 tmp = wrch->format; 1534 CHN_UNLOCK(wrch); 1535 } 1536 if (rdch && ret == 0) { 1537 CHN_LOCK(rdch); 1538 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1539 AFMT_CHANNEL(rdch->format), 1540 AFMT_EXTCHANNEL(rdch->format))); 1541 if (tmp == 0) 1542 tmp = rdch->format; 1543 CHN_UNLOCK(rdch); 1544 } 1545 PCM_RELEASE_QUICK(d); 1546 *arg_i = AFMT_ENCODING(tmp); 1547 } else { 1548 chn = wrch ? wrch : rdch; 1549 CHN_LOCK(chn); 1550 *arg_i = AFMT_ENCODING(chn->format); 1551 CHN_UNLOCK(chn); 1552 } 1553 break; 1554 1555 case SNDCTL_DSP_SETFRAGMENT: 1556 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1557 { 1558 uint32_t fragln = (*arg_i) & 0x0000ffff; 1559 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1560 uint32_t fragsz; 1561 uint32_t r_maxfrags, r_fragsz; 1562 1563 RANGE(fragln, 4, 16); 1564 fragsz = 1 << fragln; 1565 1566 if (maxfrags == 0) 1567 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1568 if (maxfrags < 2) 1569 maxfrags = 2; 1570 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1571 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1572 1573 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1574 PCM_ACQUIRE_QUICK(d); 1575 if (rdch) { 1576 CHN_LOCK(rdch); 1577 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1578 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1579 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1580 CHN_UNLOCK(rdch); 1581 } else { 1582 r_maxfrags = maxfrags; 1583 r_fragsz = fragsz; 1584 } 1585 if (wrch && ret == 0) { 1586 CHN_LOCK(wrch); 1587 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1588 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1589 fragsz = sndbuf_getblksz(wrch->bufsoft); 1590 CHN_UNLOCK(wrch); 1591 } else { /* use whatever came from the read channel */ 1592 maxfrags = r_maxfrags; 1593 fragsz = r_fragsz; 1594 } 1595 PCM_RELEASE_QUICK(d); 1596 1597 fragln = 0; 1598 while (fragsz > 1) { 1599 fragln++; 1600 fragsz >>= 1; 1601 } 1602 *arg_i = (maxfrags << 16) | fragln; 1603 } 1604 break; 1605 1606 case SNDCTL_DSP_GETISPACE: 1607 /* return the size of data available in the input queue */ 1608 { 1609 audio_buf_info *a = (audio_buf_info *)arg; 1610 if (rdch) { 1611 struct snd_dbuf *bs = rdch->bufsoft; 1612 1613 CHN_LOCK(rdch); 1614 a->bytes = sndbuf_getready(bs); 1615 a->fragments = a->bytes / sndbuf_getblksz(bs); 1616 a->fragstotal = sndbuf_getblkcnt(bs); 1617 a->fragsize = sndbuf_getblksz(bs); 1618 CHN_UNLOCK(rdch); 1619 } else 1620 ret = EINVAL; 1621 } 1622 break; 1623 1624 case SNDCTL_DSP_GETOSPACE: 1625 /* return space available in the output queue */ 1626 { 1627 audio_buf_info *a = (audio_buf_info *)arg; 1628 if (wrch) { 1629 struct snd_dbuf *bs = wrch->bufsoft; 1630 1631 CHN_LOCK(wrch); 1632 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1633 a->bytes = sndbuf_getfree(bs); 1634 a->fragments = a->bytes / sndbuf_getblksz(bs); 1635 a->fragstotal = sndbuf_getblkcnt(bs); 1636 a->fragsize = sndbuf_getblksz(bs); 1637 CHN_UNLOCK(wrch); 1638 } else 1639 ret = EINVAL; 1640 } 1641 break; 1642 1643 case SNDCTL_DSP_GETIPTR: 1644 { 1645 count_info *a = (count_info *)arg; 1646 if (rdch) { 1647 struct snd_dbuf *bs = rdch->bufsoft; 1648 1649 CHN_LOCK(rdch); 1650 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1651 a->bytes = sndbuf_gettotal(bs); 1652 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1653 a->ptr = sndbuf_getreadyptr(bs); 1654 rdch->blocks = sndbuf_getblocks(bs); 1655 CHN_UNLOCK(rdch); 1656 } else 1657 ret = EINVAL; 1658 } 1659 break; 1660 1661 case SNDCTL_DSP_GETOPTR: 1662 { 1663 count_info *a = (count_info *)arg; 1664 if (wrch) { 1665 struct snd_dbuf *bs = wrch->bufsoft; 1666 1667 CHN_LOCK(wrch); 1668 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1669 a->bytes = sndbuf_gettotal(bs); 1670 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1671 a->ptr = sndbuf_getreadyptr(bs); 1672 wrch->blocks = sndbuf_getblocks(bs); 1673 CHN_UNLOCK(wrch); 1674 } else 1675 ret = EINVAL; 1676 } 1677 break; 1678 1679 case SNDCTL_DSP_GETCAPS: 1680 PCM_LOCK(d); 1681 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1682 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1683 *arg_i |= PCM_CAP_DUPLEX; 1684 PCM_UNLOCK(d); 1685 break; 1686 1687 case SOUND_PCM_READ_BITS: 1688 chn = wrch ? wrch : rdch; 1689 if (chn) { 1690 CHN_LOCK(chn); 1691 if (chn->format & AFMT_8BIT) 1692 *arg_i = 8; 1693 else if (chn->format & AFMT_16BIT) 1694 *arg_i = 16; 1695 else if (chn->format & AFMT_24BIT) 1696 *arg_i = 24; 1697 else if (chn->format & AFMT_32BIT) 1698 *arg_i = 32; 1699 else 1700 ret = EINVAL; 1701 CHN_UNLOCK(chn); 1702 } else { 1703 *arg_i = 0; 1704 ret = EINVAL; 1705 } 1706 break; 1707 1708 case SNDCTL_DSP_SETTRIGGER: 1709 if (rdch) { 1710 CHN_LOCK(rdch); 1711 rdch->flags &= ~CHN_F_NOTRIGGER; 1712 if (*arg_i & PCM_ENABLE_INPUT) 1713 chn_start(rdch, 1); 1714 else { 1715 chn_abort(rdch); 1716 chn_resetbuf(rdch); 1717 rdch->flags |= CHN_F_NOTRIGGER; 1718 } 1719 CHN_UNLOCK(rdch); 1720 } 1721 if (wrch) { 1722 CHN_LOCK(wrch); 1723 wrch->flags &= ~CHN_F_NOTRIGGER; 1724 if (*arg_i & PCM_ENABLE_OUTPUT) 1725 chn_start(wrch, 1); 1726 else { 1727 chn_abort(wrch); 1728 chn_resetbuf(wrch); 1729 wrch->flags |= CHN_F_NOTRIGGER; 1730 } 1731 CHN_UNLOCK(wrch); 1732 } 1733 break; 1734 1735 case SNDCTL_DSP_GETTRIGGER: 1736 *arg_i = 0; 1737 if (wrch) { 1738 CHN_LOCK(wrch); 1739 if (wrch->flags & CHN_F_TRIGGERED) 1740 *arg_i |= PCM_ENABLE_OUTPUT; 1741 CHN_UNLOCK(wrch); 1742 } 1743 if (rdch) { 1744 CHN_LOCK(rdch); 1745 if (rdch->flags & CHN_F_TRIGGERED) 1746 *arg_i |= PCM_ENABLE_INPUT; 1747 CHN_UNLOCK(rdch); 1748 } 1749 break; 1750 1751 case SNDCTL_DSP_GETODELAY: 1752 if (wrch) { 1753 struct snd_dbuf *bs = wrch->bufsoft; 1754 1755 CHN_LOCK(wrch); 1756 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1757 *arg_i = sndbuf_getready(bs); 1758 CHN_UNLOCK(wrch); 1759 } else 1760 ret = EINVAL; 1761 break; 1762 1763 case SNDCTL_DSP_POST: 1764 if (wrch) { 1765 CHN_LOCK(wrch); 1766 wrch->flags &= ~CHN_F_NOTRIGGER; 1767 chn_start(wrch, 1); 1768 CHN_UNLOCK(wrch); 1769 } 1770 break; 1771 1772 case SNDCTL_DSP_SETDUPLEX: 1773 /* 1774 * switch to full-duplex mode if card is in half-duplex 1775 * mode and is able to work in full-duplex mode 1776 */ 1777 PCM_LOCK(d); 1778 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1779 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1780 PCM_UNLOCK(d); 1781 break; 1782 1783 /* 1784 * The following four ioctls are simple wrappers around mixer_ioctl 1785 * with no further processing. xcmd is short for "translated 1786 * command". 1787 */ 1788 case SNDCTL_DSP_GETRECVOL: 1789 if (xcmd == 0) { 1790 xcmd = SOUND_MIXER_READ_RECLEV; 1791 chn = rdch; 1792 } 1793 /* FALLTHROUGH */ 1794 case SNDCTL_DSP_SETRECVOL: 1795 if (xcmd == 0) { 1796 xcmd = SOUND_MIXER_WRITE_RECLEV; 1797 chn = rdch; 1798 } 1799 /* FALLTHROUGH */ 1800 case SNDCTL_DSP_GETPLAYVOL: 1801 if (xcmd == 0) { 1802 xcmd = SOUND_MIXER_READ_PCM; 1803 chn = wrch; 1804 } 1805 /* FALLTHROUGH */ 1806 case SNDCTL_DSP_SETPLAYVOL: 1807 if (xcmd == 0) { 1808 xcmd = SOUND_MIXER_WRITE_PCM; 1809 chn = wrch; 1810 } 1811 1812 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1813 if (ret != -1) { 1814 PCM_GIANT_EXIT(d); 1815 return (ret); 1816 } 1817 1818 if (d->mixer_dev != NULL) { 1819 PCM_ACQUIRE_QUICK(d); 1820 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1821 MIXER_CMD_DIRECT); 1822 PCM_RELEASE_QUICK(d); 1823 } else 1824 ret = ENOTSUP; 1825 1826 break; 1827 1828 case SNDCTL_DSP_GET_RECSRC_NAMES: 1829 case SNDCTL_DSP_GET_RECSRC: 1830 case SNDCTL_DSP_SET_RECSRC: 1831 if (d->mixer_dev != NULL) { 1832 PCM_ACQUIRE_QUICK(d); 1833 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1834 MIXER_CMD_DIRECT); 1835 PCM_RELEASE_QUICK(d); 1836 } else 1837 ret = ENOTSUP; 1838 break; 1839 1840 /* 1841 * The following 3 ioctls aren't very useful at the moment. For 1842 * now, only a single channel is associated with a cdev (/dev/dspN 1843 * instance), so there's only a single output routing to use (i.e., 1844 * the wrch bound to this cdev). 1845 */ 1846 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1847 { 1848 oss_mixer_enuminfo *ei; 1849 ei = (oss_mixer_enuminfo *)arg; 1850 ei->dev = 0; 1851 ei->ctrl = 0; 1852 ei->version = 0; /* static for now */ 1853 ei->strindex[0] = 0; 1854 1855 if (wrch != NULL) { 1856 ei->nvalues = 1; 1857 strlcpy(ei->strings, wrch->name, 1858 sizeof(ei->strings)); 1859 } else { 1860 ei->nvalues = 0; 1861 ei->strings[0] = '\0'; 1862 } 1863 } 1864 break; 1865 case SNDCTL_DSP_GET_PLAYTGT: 1866 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1867 /* 1868 * Re: SET_PLAYTGT 1869 * OSSv4: "The value that was accepted by the device will 1870 * be returned back in the variable pointed by the 1871 * argument." 1872 */ 1873 if (wrch != NULL) 1874 *arg_i = 0; 1875 else 1876 ret = EINVAL; 1877 break; 1878 1879 case SNDCTL_DSP_SILENCE: 1880 /* 1881 * Flush the software (pre-feed) buffer, but try to minimize playback 1882 * interruption. (I.e., record unplayed samples with intent to 1883 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1884 * functionality. 1885 */ 1886 if (wrch == NULL) 1887 ret = EINVAL; 1888 else { 1889 struct snd_dbuf *bs; 1890 CHN_LOCK(wrch); 1891 while (wrch->inprog != 0) 1892 cv_wait(&wrch->cv, wrch->lock); 1893 bs = wrch->bufsoft; 1894 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1895 bs->sl = sndbuf_getready(bs); 1896 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1897 sndbuf_fillsilence(bs); 1898 chn_start(wrch, 0); 1899 } 1900 CHN_UNLOCK(wrch); 1901 } 1902 break; 1903 1904 case SNDCTL_DSP_SKIP: 1905 /* 1906 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1907 * playback buffer by moving the current write position immediately 1908 * before the point where the device is currently reading the samples." 1909 */ 1910 if (wrch == NULL) 1911 ret = EINVAL; 1912 else { 1913 struct snd_dbuf *bs; 1914 CHN_LOCK(wrch); 1915 while (wrch->inprog != 0) 1916 cv_wait(&wrch->cv, wrch->lock); 1917 bs = wrch->bufsoft; 1918 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1919 sndbuf_softreset(bs); 1920 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1921 bs->sl = 0; 1922 chn_start(wrch, 0); 1923 } 1924 CHN_UNLOCK(wrch); 1925 } 1926 break; 1927 1928 case SNDCTL_DSP_CURRENT_OPTR: 1929 case SNDCTL_DSP_CURRENT_IPTR: 1930 /** 1931 * @note Changing formats resets the buffer counters, which differs 1932 * from the 4Front drivers. However, I don't expect this to be 1933 * much of a problem. 1934 * 1935 * @note In a test where @c CURRENT_OPTR is called immediately after write 1936 * returns, this driver is about 32K samples behind whereas 1937 * 4Front's is about 8K samples behind. Should determine source 1938 * of discrepancy, even if only out of curiosity. 1939 * 1940 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1941 */ 1942 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1943 if (chn == NULL) 1944 ret = EINVAL; 1945 else { 1946 struct snd_dbuf *bs; 1947 /* int tmp; */ 1948 1949 oss_count_t *oc = (oss_count_t *)arg; 1950 1951 CHN_LOCK(chn); 1952 bs = chn->bufsoft; 1953 #if 0 1954 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1955 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1956 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1957 #else 1958 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1959 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1960 #endif 1961 CHN_UNLOCK(chn); 1962 } 1963 break; 1964 1965 case SNDCTL_DSP_HALT_OUTPUT: 1966 case SNDCTL_DSP_HALT_INPUT: 1967 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1968 if (chn == NULL) 1969 ret = EINVAL; 1970 else { 1971 CHN_LOCK(chn); 1972 chn_abort(chn); 1973 CHN_UNLOCK(chn); 1974 } 1975 break; 1976 1977 case SNDCTL_DSP_LOW_WATER: 1978 /* 1979 * Set the number of bytes required to attract attention by 1980 * select/poll. 1981 */ 1982 if (wrch != NULL) { 1983 CHN_LOCK(wrch); 1984 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 1985 CHN_UNLOCK(wrch); 1986 } 1987 if (rdch != NULL) { 1988 CHN_LOCK(rdch); 1989 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 1990 CHN_UNLOCK(rdch); 1991 } 1992 break; 1993 1994 case SNDCTL_DSP_GETERROR: 1995 /* 1996 * OSSv4 docs: "All errors and counters will automatically be 1997 * cleared to zeroes after the call so each call will return only 1998 * the errors that occurred after the previous invocation. ... The 1999 * play_underruns and rec_overrun fields are the only usefull fields 2000 * returned by OSS 4.0." 2001 */ 2002 { 2003 audio_errinfo *ei = (audio_errinfo *)arg; 2004 2005 bzero((void *)ei, sizeof(*ei)); 2006 2007 if (wrch != NULL) { 2008 CHN_LOCK(wrch); 2009 ei->play_underruns = wrch->xruns; 2010 wrch->xruns = 0; 2011 CHN_UNLOCK(wrch); 2012 } 2013 if (rdch != NULL) { 2014 CHN_LOCK(rdch); 2015 ei->rec_overruns = rdch->xruns; 2016 rdch->xruns = 0; 2017 CHN_UNLOCK(rdch); 2018 } 2019 } 2020 break; 2021 2022 case SNDCTL_DSP_SYNCGROUP: 2023 PCM_ACQUIRE_QUICK(d); 2024 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2025 PCM_RELEASE_QUICK(d); 2026 break; 2027 2028 case SNDCTL_DSP_SYNCSTART: 2029 PCM_ACQUIRE_QUICK(d); 2030 ret = dsp_oss_syncstart(*arg_i); 2031 PCM_RELEASE_QUICK(d); 2032 break; 2033 2034 case SNDCTL_DSP_POLICY: 2035 PCM_ACQUIRE_QUICK(d); 2036 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2037 PCM_RELEASE_QUICK(d); 2038 break; 2039 2040 case SNDCTL_DSP_COOKEDMODE: 2041 PCM_ACQUIRE_QUICK(d); 2042 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2043 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2044 PCM_RELEASE_QUICK(d); 2045 break; 2046 case SNDCTL_DSP_GET_CHNORDER: 2047 PCM_ACQUIRE_QUICK(d); 2048 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2049 PCM_RELEASE_QUICK(d); 2050 break; 2051 case SNDCTL_DSP_SET_CHNORDER: 2052 PCM_ACQUIRE_QUICK(d); 2053 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2054 PCM_RELEASE_QUICK(d); 2055 break; 2056 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2057 PCM_ACQUIRE_QUICK(d); 2058 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2059 PCM_RELEASE_QUICK(d); 2060 break; 2061 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2062 ret = EINVAL; 2063 break; 2064 #ifdef OSSV4_EXPERIMENT 2065 /* 2066 * XXX The following ioctls are not yet supported and just return 2067 * EINVAL. 2068 */ 2069 case SNDCTL_DSP_GETOPEAKS: 2070 case SNDCTL_DSP_GETIPEAKS: 2071 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2072 if (chn == NULL) 2073 ret = EINVAL; 2074 else { 2075 oss_peaks_t *op = (oss_peaks_t *)arg; 2076 int lpeak, rpeak; 2077 2078 CHN_LOCK(chn); 2079 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2080 if (ret == -1) 2081 ret = EINVAL; 2082 else { 2083 (*op)[0] = lpeak; 2084 (*op)[1] = rpeak; 2085 } 2086 CHN_UNLOCK(chn); 2087 } 2088 break; 2089 2090 /* 2091 * XXX Once implemented, revisit this for proper cv protection 2092 * (if necessary). 2093 */ 2094 case SNDCTL_GETLABEL: 2095 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2096 break; 2097 case SNDCTL_SETLABEL: 2098 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2099 break; 2100 case SNDCTL_GETSONG: 2101 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2102 break; 2103 case SNDCTL_SETSONG: 2104 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2105 break; 2106 case SNDCTL_SETNAME: 2107 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2108 break; 2109 #if 0 2110 /** 2111 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2112 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2113 * 4Front Technologies. 2114 */ 2115 case SNDCTL_DSP_READCTL: 2116 case SNDCTL_DSP_WRITECTL: 2117 ret = EINVAL; 2118 break; 2119 #endif /* !0 (explicitly omitted ioctls) */ 2120 2121 #endif /* !OSSV4_EXPERIMENT */ 2122 case SNDCTL_DSP_MAPINBUF: 2123 case SNDCTL_DSP_MAPOUTBUF: 2124 case SNDCTL_DSP_SETSYNCRO: 2125 /* undocumented */ 2126 2127 case SNDCTL_DSP_SUBDIVIDE: 2128 case SOUND_PCM_WRITE_FILTER: 2129 case SOUND_PCM_READ_FILTER: 2130 /* dunno what these do, don't sound important */ 2131 2132 default: 2133 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2134 ret = EINVAL; 2135 break; 2136 } 2137 2138 PCM_GIANT_LEAVE(d); 2139 2140 return (ret); 2141 } 2142 2143 static int 2144 dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2145 { 2146 struct snddev_info *d; 2147 struct pcm_channel *wrch, *rdch; 2148 int ret, e; 2149 2150 d = dsp_get_info(i_dev); 2151 if (!DSP_REGISTERED(d, i_dev)) 2152 return (EBADF); 2153 2154 PCM_GIANT_ENTER(d); 2155 2156 wrch = NULL; 2157 rdch = NULL; 2158 ret = 0; 2159 2160 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2161 2162 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2163 e = (events & (POLLOUT | POLLWRNORM)); 2164 if (e) 2165 ret |= chn_poll(wrch, e, td); 2166 } 2167 2168 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2169 e = (events & (POLLIN | POLLRDNORM)); 2170 if (e) 2171 ret |= chn_poll(rdch, e, td); 2172 } 2173 2174 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2175 2176 PCM_GIANT_LEAVE(d); 2177 2178 return (ret); 2179 } 2180 2181 static int 2182 dsp_mmap(struct cdev *i_dev, vm_ooffset_t offset, vm_paddr_t *paddr, 2183 int nprot, vm_memattr_t *memattr) 2184 { 2185 struct snddev_info *d; 2186 struct pcm_channel *wrch, *rdch, *c; 2187 2188 /* 2189 * Reject PROT_EXEC by default. It just doesn't makes sense. 2190 * Unfortunately, we have to give up this one due to linux_mmap 2191 * changes. 2192 * 2193 * http://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2194 * 2195 */ 2196 #ifdef SV_ABI_LINUX 2197 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2198 (dsp_mmap_allow_prot_exec == 0 && 2199 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2200 #else 2201 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2202 #endif 2203 return (-1); 2204 2205 d = dsp_get_info(i_dev); 2206 if (!DSP_REGISTERED(d, i_dev)) 2207 return (-1); 2208 2209 PCM_GIANT_ENTER(d); 2210 2211 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2212 2213 /* 2214 * XXX The linux api uses the nprot to select read/write buffer 2215 * our vm system doesn't allow this, so force write buffer. 2216 * 2217 * This is just a quack to fool full-duplex mmap, so that at 2218 * least playback _or_ recording works. If you really got the 2219 * urge to make _both_ work at the same time, avoid O_RDWR. 2220 * Just open each direction separately and mmap() it. 2221 * 2222 * Failure is not an option due to INVARIANTS check within 2223 * device_pager.c, which means, we have to give up one over 2224 * another. 2225 */ 2226 c = (wrch != NULL) ? wrch : rdch; 2227 2228 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2229 offset >= sndbuf_getsize(c->bufsoft) || 2230 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2231 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2232 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2233 PCM_GIANT_EXIT(d); 2234 return (-1); 2235 } 2236 2237 /* XXX full-duplex quack. */ 2238 if (wrch != NULL) 2239 wrch->flags |= CHN_F_MMAP; 2240 if (rdch != NULL) 2241 rdch->flags |= CHN_F_MMAP; 2242 2243 *paddr = vtophys(sndbuf_getbufofs(c->bufsoft, offset)); 2244 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2245 2246 PCM_GIANT_LEAVE(d); 2247 2248 return (0); 2249 } 2250 2251 /* So much for dev_stdclone() */ 2252 static int 2253 dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2254 { 2255 size_t len; 2256 2257 len = strlen(namep); 2258 2259 if (bcmp(name, namep, len) != 0) 2260 return (ENODEV); 2261 2262 name += len; 2263 2264 if (isdigit(*name) == 0) 2265 return (ENODEV); 2266 2267 len = strlen(sep); 2268 2269 if (*name == '0' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2270 return (ENODEV); 2271 2272 for (*u = 0; isdigit(*name) != 0; name++) { 2273 *u *= 10; 2274 *u += *name - '0'; 2275 if (*u > dsp_umax) 2276 return (ENODEV); 2277 } 2278 2279 if (*name == '\0') 2280 return ((use_sep == 0) ? 0 : ENODEV); 2281 2282 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2283 return (ENODEV); 2284 2285 name += len; 2286 2287 if (*name == '0' && name[1] != '\0') 2288 return (ENODEV); 2289 2290 for (*c = 0; isdigit(*name) != 0; name++) { 2291 *c *= 10; 2292 *c += *name - '0'; 2293 if (*c > dsp_cmax) 2294 return (ENODEV); 2295 } 2296 2297 if (*name != '\0') 2298 return (ENODEV); 2299 2300 return (0); 2301 } 2302 2303 static void 2304 dsp_clone(void *arg, 2305 #if __FreeBSD_version >= 600034 2306 struct ucred *cred, 2307 #endif 2308 char *name, int namelen, struct cdev **dev) 2309 { 2310 struct snddev_info *d; 2311 struct snd_clone_entry *ce; 2312 struct pcm_channel *c; 2313 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2314 char *devname, *devcmp, *devsep; 2315 2316 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2317 2318 if (*dev != NULL) 2319 return; 2320 2321 unit = -1; 2322 cunit = -1; 2323 devtype = -1; 2324 devhw = 0; 2325 devcmax = -1; 2326 tumax = -1; 2327 devname = NULL; 2328 devsep = NULL; 2329 2330 for (i = 0; unit == -1 && 2331 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2332 devtype = dsp_cdevs[i].type; 2333 devcmp = dsp_cdevs[i].name; 2334 devsep = dsp_cdevs[i].sep; 2335 devname = dsp_cdevs[i].alias; 2336 if (devname == NULL) 2337 devname = devcmp; 2338 devhw = dsp_cdevs[i].hw; 2339 devcmax = dsp_cdevs[i].max - 1; 2340 if (strcmp(name, devcmp) == 0) 2341 unit = snd_unit; 2342 else if (dsp_stdclone(name, devcmp, devsep, 2343 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2344 unit = -1; 2345 cunit = -1; 2346 } 2347 } 2348 2349 d = devclass_get_softc(pcm_devclass, unit); 2350 if (!PCM_REGISTERED(d) || d->clones == NULL) 2351 return; 2352 2353 /* XXX Need Giant magic entry ??? */ 2354 2355 PCM_LOCK(d); 2356 if (snd_clone_disabled(d->clones)) { 2357 PCM_UNLOCK(d); 2358 return; 2359 } 2360 2361 PCM_WAIT(d); 2362 PCM_ACQUIRE(d); 2363 PCM_UNLOCK(d); 2364 2365 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2366 2367 if (devhw != 0) { 2368 KASSERT(devcmax <= dsp_cmax, 2369 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2370 if (cunit > devcmax) { 2371 PCM_RELEASE_QUICK(d); 2372 return; 2373 } 2374 udcmask |= snd_c2unit(cunit); 2375 CHN_FOREACH(c, d, channels.pcm) { 2376 CHN_LOCK(c); 2377 if (c->unit != udcmask) { 2378 CHN_UNLOCK(c); 2379 continue; 2380 } 2381 CHN_UNLOCK(c); 2382 udcmask &= ~snd_c2unit(cunit); 2383 /* 2384 * Temporarily increase clone maxunit to overcome 2385 * vchan flexibility. 2386 * 2387 * # sysctl dev.pcm.0.play.vchans=256 2388 * dev.pcm.0.play.vchans: 1 -> 256 2389 * # cat /dev/zero > /dev/dsp0.vp255 & 2390 * [1] 17296 2391 * # sysctl dev.pcm.0.play.vchans=0 2392 * dev.pcm.0.play.vchans: 256 -> 1 2393 * # fg 2394 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2395 * ^C 2396 * # cat /dev/zero > /dev/dsp0.vp255 2397 * zsh: operation not supported: /dev/dsp0.vp255 2398 */ 2399 tumax = snd_clone_getmaxunit(d->clones); 2400 if (cunit > tumax) 2401 snd_clone_setmaxunit(d->clones, cunit); 2402 else 2403 tumax = -1; 2404 goto dsp_clone_alloc; 2405 } 2406 /* 2407 * Ok, so we're requesting unallocated vchan, but still 2408 * within maximum vchan limit. 2409 */ 2410 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2411 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2412 cunit < snd_maxautovchans) { 2413 udcmask &= ~snd_c2unit(cunit); 2414 tumax = snd_clone_getmaxunit(d->clones); 2415 if (cunit > tumax) 2416 snd_clone_setmaxunit(d->clones, cunit); 2417 else 2418 tumax = -1; 2419 goto dsp_clone_alloc; 2420 } 2421 PCM_RELEASE_QUICK(d); 2422 return; 2423 } 2424 2425 dsp_clone_alloc: 2426 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2427 if (tumax != -1) 2428 snd_clone_setmaxunit(d->clones, tumax); 2429 if (ce != NULL) { 2430 udcmask |= snd_c2unit(cunit); 2431 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2432 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2433 devname, unit, devsep, cunit); 2434 snd_clone_register(ce, *dev); 2435 } 2436 2437 PCM_RELEASE_QUICK(d); 2438 2439 if (*dev != NULL) 2440 dev_ref(*dev); 2441 } 2442 2443 static void 2444 dsp_sysinit(void *p) 2445 { 2446 if (dsp_ehtag != NULL) 2447 return; 2448 /* initialize unit numbering */ 2449 snd_unit_init(); 2450 dsp_umax = PCMMAXUNIT; 2451 dsp_cmax = PCMMAXCHAN; 2452 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2453 } 2454 2455 static void 2456 dsp_sysuninit(void *p) 2457 { 2458 if (dsp_ehtag == NULL) 2459 return; 2460 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2461 dsp_ehtag = NULL; 2462 } 2463 2464 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2465 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2466 2467 char * 2468 dsp_unit2name(char *buf, size_t len, int unit) 2469 { 2470 int i, dtype; 2471 2472 KASSERT(buf != NULL && len != 0, 2473 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2474 2475 dtype = snd_unit2d(unit); 2476 2477 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2478 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2479 continue; 2480 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2481 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2482 return (buf); 2483 } 2484 2485 return (NULL); 2486 } 2487 2488 /** 2489 * @brief Handler for SNDCTL_AUDIOINFO. 2490 * 2491 * Gathers information about the audio device specified in ai->dev. If 2492 * ai->dev == -1, then this function gathers information about the current 2493 * device. If the call comes in on a non-audio device and ai->dev == -1, 2494 * return EINVAL. 2495 * 2496 * This routine is supposed to go practically straight to the hardware, 2497 * getting capabilities directly from the sound card driver, side-stepping 2498 * the intermediate channel interface. 2499 * 2500 * Note, however, that the usefulness of this command is significantly 2501 * decreased when requesting info about any device other than the one serving 2502 * the request. While each snddev_channel refers to a specific device node, 2503 * the converse is *not* true. Currently, when a sound device node is opened, 2504 * the sound subsystem scans for an available audio channel (or channels, if 2505 * opened in read+write) and then assigns them to the si_drv[12] private 2506 * data fields. As a result, any information returned linking a channel to 2507 * a specific character device isn't necessarily accurate. 2508 * 2509 * @note 2510 * Calling threads must not hold any snddev_info or pcm_channel locks. 2511 * 2512 * @param dev device on which the ioctl was issued 2513 * @param ai ioctl request data container 2514 * 2515 * @retval 0 success 2516 * @retval EINVAL ai->dev specifies an invalid device 2517 * 2518 * @todo Verify correctness of Doxygen tags. ;) 2519 */ 2520 int 2521 dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2522 { 2523 struct pcmchan_caps *caps; 2524 struct pcm_channel *ch; 2525 struct snddev_info *d; 2526 uint32_t fmts; 2527 int i, nchan, *rates, minch, maxch; 2528 char *devname, buf[CHN_NAMELEN]; 2529 2530 /* 2531 * If probing the device that received the ioctl, make sure it's a 2532 * DSP device. (Users may use this ioctl with /dev/mixer and 2533 * /dev/midi.) 2534 */ 2535 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2536 return (EINVAL); 2537 2538 ch = NULL; 2539 devname = NULL; 2540 nchan = 0; 2541 bzero(buf, sizeof(buf)); 2542 2543 /* 2544 * Search for the requested audio device (channel). Start by 2545 * iterating over pcm devices. 2546 */ 2547 for (i = 0; pcm_devclass != NULL && 2548 i < devclass_get_maxunit(pcm_devclass); i++) { 2549 d = devclass_get_softc(pcm_devclass, i); 2550 if (!PCM_REGISTERED(d)) 2551 continue; 2552 2553 /* XXX Need Giant magic entry ??? */ 2554 2555 /* See the note in function docblock */ 2556 PCM_UNLOCKASSERT(d); 2557 PCM_LOCK(d); 2558 2559 CHN_FOREACH(ch, d, channels.pcm) { 2560 CHN_UNLOCKASSERT(ch); 2561 CHN_LOCK(ch); 2562 if (ai->dev == -1) { 2563 if (DSP_REGISTERED(d, i_dev) && 2564 (ch == PCM_RDCH(i_dev) || /* record ch */ 2565 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2566 devname = dsp_unit2name(buf, 2567 sizeof(buf), ch->unit); 2568 } 2569 } else if (ai->dev == nchan) { 2570 devname = dsp_unit2name(buf, sizeof(buf), 2571 ch->unit); 2572 } 2573 if (devname != NULL) 2574 break; 2575 CHN_UNLOCK(ch); 2576 ++nchan; 2577 } 2578 2579 if (devname != NULL) { 2580 /* 2581 * At this point, the following synchronization stuff 2582 * has happened: 2583 * - a specific PCM device is locked. 2584 * - a specific audio channel has been locked, so be 2585 * sure to unlock when exiting; 2586 */ 2587 2588 caps = chn_getcaps(ch); 2589 2590 /* 2591 * With all handles collected, zero out the user's 2592 * container and begin filling in its fields. 2593 */ 2594 bzero((void *)ai, sizeof(oss_audioinfo)); 2595 2596 ai->dev = nchan; 2597 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2598 2599 if ((ch->flags & CHN_F_BUSY) == 0) 2600 ai->busy = 0; 2601 else 2602 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2603 2604 /** 2605 * @note 2606 * @c cmd - OSSv4 docs: "Only supported under Linux at 2607 * this moment." Cop-out, I know, but I'll save 2608 * running around in the process table for later. 2609 * Is there a risk of leaking information? 2610 */ 2611 ai->pid = ch->pid; 2612 2613 /* 2614 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2615 * Note, however, that a single channel operates in 2616 * only one direction, so PCM_CAP_DUPLEX is out. 2617 */ 2618 /** 2619 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2620 * these in pcmchan::caps? 2621 */ 2622 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2623 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2624 2625 /* 2626 * Collect formats supported @b natively by the 2627 * device. Also determine min/max channels. (I.e., 2628 * mono, stereo, or both?) 2629 * 2630 * If any channel is stereo, maxch = 2; 2631 * if all channels are stereo, minch = 2, too; 2632 * if any channel is mono, minch = 1; 2633 * and if all channels are mono, maxch = 1. 2634 */ 2635 minch = 0; 2636 maxch = 0; 2637 fmts = 0; 2638 for (i = 0; caps->fmtlist[i]; i++) { 2639 fmts |= caps->fmtlist[i]; 2640 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2641 minch = (minch == 0) ? 2 : minch; 2642 maxch = 2; 2643 } else { 2644 minch = 1; 2645 maxch = (maxch == 0) ? 1 : maxch; 2646 } 2647 } 2648 2649 if (ch->direction == PCMDIR_PLAY) 2650 ai->oformats = fmts; 2651 else 2652 ai->iformats = fmts; 2653 2654 /** 2655 * @note 2656 * @c magic - OSSv4 docs: "Reserved for internal use 2657 * by OSS." 2658 * 2659 * @par 2660 * @c card_number - OSSv4 docs: "Number of the sound 2661 * card where this device belongs or -1 if this 2662 * information is not available. Applications 2663 * should normally not use this field for any 2664 * purpose." 2665 */ 2666 ai->card_number = -1; 2667 /** 2668 * @todo @c song_name - depends first on 2669 * SNDCTL_[GS]ETSONG @todo @c label - depends 2670 * on SNDCTL_[GS]ETLABEL 2671 * @todo @c port_number - routing information? 2672 */ 2673 ai->port_number = -1; 2674 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2675 /** 2676 * @note 2677 * @c real_device - OSSv4 docs: "Obsolete." 2678 */ 2679 ai->real_device = -1; 2680 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2681 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2682 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2683 /** 2684 * @note 2685 * @c flags - OSSv4 docs: "Reserved for future use." 2686 * 2687 * @note 2688 * @c binding - OSSv4 docs: "Reserved for future use." 2689 * 2690 * @todo @c handle - haven't decided how to generate 2691 * this yet; bus, vendor, device IDs? 2692 */ 2693 ai->min_rate = caps->minspeed; 2694 ai->max_rate = caps->maxspeed; 2695 2696 ai->min_channels = minch; 2697 ai->max_channels = maxch; 2698 2699 ai->nrates = chn_getrates(ch, &rates); 2700 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2701 ai->nrates = OSS_MAX_SAMPLE_RATES; 2702 2703 for (i = 0; i < ai->nrates; i++) 2704 ai->rates[i] = rates[i]; 2705 2706 ai->next_play_engine = 0; 2707 ai->next_rec_engine = 0; 2708 2709 CHN_UNLOCK(ch); 2710 } 2711 2712 PCM_UNLOCK(d); 2713 2714 if (devname != NULL) 2715 return (0); 2716 } 2717 2718 /* Exhausted the search -- nothing is locked, so return. */ 2719 return (EINVAL); 2720 } 2721 2722 /** 2723 * @brief Assigns a PCM channel to a sync group. 2724 * 2725 * Sync groups are used to enable audio operations on multiple devices 2726 * simultaneously. They may be used with any number of devices and may 2727 * span across applications. Devices are added to groups with 2728 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2729 * SNDCTL_DSP_SYNCSTART ioctl. 2730 * 2731 * If the @c id field of the @c group parameter is set to zero, then a new 2732 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2733 * the group specified. 2734 * 2735 * @todo As far as memory allocation, should we assume that things are 2736 * okay and allocate with M_WAITOK before acquiring channel locks, 2737 * freeing later if not? 2738 * 2739 * @param wrch output channel associated w/ device (if any) 2740 * @param rdch input channel associated w/ device (if any) 2741 * @param group Sync group parameters 2742 * 2743 * @retval 0 success 2744 * @retval non-zero error to be propagated upstream 2745 */ 2746 static int 2747 dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2748 { 2749 struct pcmchan_syncmember *smrd, *smwr; 2750 struct pcmchan_syncgroup *sg; 2751 int ret, sg_ids[3]; 2752 2753 smrd = NULL; 2754 smwr = NULL; 2755 sg = NULL; 2756 ret = 0; 2757 2758 /* 2759 * Free_unr() may sleep, so store released syncgroup IDs until after 2760 * all locks are released. 2761 */ 2762 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2763 2764 PCM_SG_LOCK(); 2765 2766 /* 2767 * - Insert channel(s) into group's member list. 2768 * - Set CHN_F_NOTRIGGER on channel(s). 2769 * - Stop channel(s). 2770 */ 2771 2772 /* 2773 * If device's channels are already mapped to a group, unmap them. 2774 */ 2775 if (wrch) { 2776 CHN_LOCK(wrch); 2777 sg_ids[0] = chn_syncdestroy(wrch); 2778 } 2779 2780 if (rdch) { 2781 CHN_LOCK(rdch); 2782 sg_ids[1] = chn_syncdestroy(rdch); 2783 } 2784 2785 /* 2786 * Verify that mode matches character device properites. 2787 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2788 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2789 */ 2790 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2791 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2792 ret = EINVAL; 2793 goto out; 2794 } 2795 2796 /* 2797 * An id of zero indicates the user wants to create a new 2798 * syncgroup. 2799 */ 2800 if (group->id == 0) { 2801 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2802 if (sg != NULL) { 2803 SLIST_INIT(&sg->members); 2804 sg->id = alloc_unr(pcmsg_unrhdr); 2805 2806 group->id = sg->id; 2807 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2808 } else 2809 ret = ENOMEM; 2810 } else { 2811 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2812 if (sg->id == group->id) 2813 break; 2814 } 2815 if (sg == NULL) 2816 ret = EINVAL; 2817 } 2818 2819 /* Couldn't create or find a syncgroup. Fail. */ 2820 if (sg == NULL) 2821 goto out; 2822 2823 /* 2824 * Allocate a syncmember, assign it and a channel together, and 2825 * insert into syncgroup. 2826 */ 2827 if (group->mode & PCM_ENABLE_INPUT) { 2828 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2829 if (smrd == NULL) { 2830 ret = ENOMEM; 2831 goto out; 2832 } 2833 2834 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2835 smrd->parent = sg; 2836 smrd->ch = rdch; 2837 2838 chn_abort(rdch); 2839 rdch->flags |= CHN_F_NOTRIGGER; 2840 rdch->sm = smrd; 2841 } 2842 2843 if (group->mode & PCM_ENABLE_OUTPUT) { 2844 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2845 if (smwr == NULL) { 2846 ret = ENOMEM; 2847 goto out; 2848 } 2849 2850 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2851 smwr->parent = sg; 2852 smwr->ch = wrch; 2853 2854 chn_abort(wrch); 2855 wrch->flags |= CHN_F_NOTRIGGER; 2856 wrch->sm = smwr; 2857 } 2858 2859 2860 out: 2861 if (ret != 0) { 2862 if (smrd != NULL) 2863 free(smrd, M_DEVBUF); 2864 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2865 sg_ids[2] = sg->id; 2866 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2867 free(sg, M_DEVBUF); 2868 } 2869 2870 if (wrch) 2871 wrch->sm = NULL; 2872 if (rdch) 2873 rdch->sm = NULL; 2874 } 2875 2876 if (wrch) 2877 CHN_UNLOCK(wrch); 2878 if (rdch) 2879 CHN_UNLOCK(rdch); 2880 2881 PCM_SG_UNLOCK(); 2882 2883 if (sg_ids[0]) 2884 free_unr(pcmsg_unrhdr, sg_ids[0]); 2885 if (sg_ids[1]) 2886 free_unr(pcmsg_unrhdr, sg_ids[1]); 2887 if (sg_ids[2]) 2888 free_unr(pcmsg_unrhdr, sg_ids[2]); 2889 2890 return (ret); 2891 } 2892 2893 /** 2894 * @brief Launch a sync group into action 2895 * 2896 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2897 * iterates over all members, triggering them along the way. 2898 * 2899 * @note Caller must not hold any channel locks. 2900 * 2901 * @param sg_id sync group identifier 2902 * 2903 * @retval 0 success 2904 * @retval non-zero error worthy of propagating upstream to user 2905 */ 2906 static int 2907 dsp_oss_syncstart(int sg_id) 2908 { 2909 struct pcmchan_syncmember *sm, *sm_tmp; 2910 struct pcmchan_syncgroup *sg; 2911 struct pcm_channel *c; 2912 int ret, needlocks; 2913 2914 /* Get the synclists lock */ 2915 PCM_SG_LOCK(); 2916 2917 do { 2918 ret = 0; 2919 needlocks = 0; 2920 2921 /* Search for syncgroup by ID */ 2922 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2923 if (sg->id == sg_id) 2924 break; 2925 } 2926 2927 /* Return EINVAL if not found */ 2928 if (sg == NULL) { 2929 ret = EINVAL; 2930 break; 2931 } 2932 2933 /* Any removals resulting in an empty group should've handled this */ 2934 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2935 2936 /* 2937 * Attempt to lock all member channels - if any are already 2938 * locked, unlock those acquired, sleep for a bit, and try 2939 * again. 2940 */ 2941 SLIST_FOREACH(sm, &sg->members, link) { 2942 if (CHN_TRYLOCK(sm->ch) == 0) { 2943 int timo = hz * 5/1000; 2944 if (timo < 1) 2945 timo = 1; 2946 2947 /* Release all locked channels so far, retry */ 2948 SLIST_FOREACH(sm_tmp, &sg->members, link) { 2949 /* sm is the member already locked */ 2950 if (sm == sm_tmp) 2951 break; 2952 CHN_UNLOCK(sm_tmp->ch); 2953 } 2954 2955 /** @todo Is PRIBIO correct/ */ 2956 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 2957 PRIBIO | PCATCH, "pcmsg", timo); 2958 if (ret == EINTR || ret == ERESTART) 2959 break; 2960 2961 needlocks = 1; 2962 ret = 0; /* Assumes ret == EAGAIN... */ 2963 } 2964 } 2965 } while (needlocks && ret == 0); 2966 2967 /* Proceed only if no errors encountered. */ 2968 if (ret == 0) { 2969 /* Launch channels */ 2970 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 2971 SLIST_REMOVE_HEAD(&sg->members, link); 2972 2973 c = sm->ch; 2974 c->sm = NULL; 2975 chn_start(c, 1); 2976 c->flags &= ~CHN_F_NOTRIGGER; 2977 CHN_UNLOCK(c); 2978 2979 free(sm, M_DEVBUF); 2980 } 2981 2982 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2983 free(sg, M_DEVBUF); 2984 } 2985 2986 PCM_SG_UNLOCK(); 2987 2988 /* 2989 * Free_unr() may sleep, so be sure to give up the syncgroup lock 2990 * first. 2991 */ 2992 if (ret == 0) 2993 free_unr(pcmsg_unrhdr, sg_id); 2994 2995 return (ret); 2996 } 2997 2998 /** 2999 * @brief Handler for SNDCTL_DSP_POLICY 3000 * 3001 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3002 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3003 * specifying those two parameters, s/he simply selects a number from 0..10 3004 * which corresponds to a buffer size. Smaller numbers request smaller 3005 * buffers with lower latencies (at greater overhead from more frequent 3006 * interrupts), while greater numbers behave in the opposite manner. 3007 * 3008 * The 4Front spec states that a value of 5 should be the default. However, 3009 * this implementation deviates slightly by using a linear scale without 3010 * consulting drivers. I.e., even though drivers may have different default 3011 * buffer sizes, a policy argument of 5 will have the same result across 3012 * all drivers. 3013 * 3014 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3015 * more information. 3016 * 3017 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3018 * work with hardware drivers directly. 3019 * 3020 * @note PCM channel arguments must not be locked by caller. 3021 * 3022 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3023 * @param rdch " recording channel (optional; may be NULL) 3024 * @param policy Integer from [0:10] 3025 * 3026 * @retval 0 constant (for now) 3027 */ 3028 static int 3029 dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3030 { 3031 int ret; 3032 3033 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3034 return (EIO); 3035 3036 /* Default: success */ 3037 ret = 0; 3038 3039 if (rdch) { 3040 CHN_LOCK(rdch); 3041 ret = chn_setlatency(rdch, policy); 3042 CHN_UNLOCK(rdch); 3043 } 3044 3045 if (wrch && ret == 0) { 3046 CHN_LOCK(wrch); 3047 ret = chn_setlatency(wrch, policy); 3048 CHN_UNLOCK(wrch); 3049 } 3050 3051 if (ret) 3052 ret = EIO; 3053 3054 return (ret); 3055 } 3056 3057 /** 3058 * @brief Enable or disable "cooked" mode 3059 * 3060 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3061 * is the default, the sound system handles rate and format conversions 3062 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3063 * operates with 44100Hz/16bit/signed samples). 3064 * 3065 * Disabling cooked mode is intended for applications wanting to mmap() 3066 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3067 * feeder architecture, presumably to gain as much control over audio 3068 * hardware as possible. 3069 * 3070 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3071 * for more details. 3072 * 3073 * @param wrch playback channel (optional; may be NULL) 3074 * @param rdch recording channel (optional; may be NULL) 3075 * @param enabled 0 = raw mode, 1 = cooked mode 3076 * 3077 * @retval EINVAL Operation not yet supported. 3078 */ 3079 static int 3080 dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3081 { 3082 3083 /* 3084 * XXX I just don't get it. Why don't they call it 3085 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3086 * This is just plain so confusing, incoherent, 3087 * <insert any non-printable characters here>. 3088 */ 3089 if (!(enabled == 1 || enabled == 0)) 3090 return (EINVAL); 3091 3092 /* 3093 * I won't give in. I'm inverting its logic here and now. 3094 * Brag all you want, but "BITPERFECT" should be the better 3095 * term here. 3096 */ 3097 enabled ^= 0x00000001; 3098 3099 if (wrch != NULL) { 3100 CHN_LOCK(wrch); 3101 wrch->flags &= ~CHN_F_BITPERFECT; 3102 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3103 CHN_UNLOCK(wrch); 3104 } 3105 3106 if (rdch != NULL) { 3107 CHN_LOCK(rdch); 3108 rdch->flags &= ~CHN_F_BITPERFECT; 3109 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3110 CHN_UNLOCK(rdch); 3111 } 3112 3113 return (0); 3114 } 3115 3116 /** 3117 * @brief Retrieve channel interleaving order 3118 * 3119 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3120 * 3121 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3122 * for more details. 3123 * 3124 * @note As the ioctl definition is still under construction, FreeBSD 3125 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3126 * 3127 * @param wrch playback channel (optional; may be NULL) 3128 * @param rdch recording channel (optional; may be NULL) 3129 * @param map channel map (result will be stored there) 3130 * 3131 * @retval EINVAL Operation not yet supported. 3132 */ 3133 static int 3134 dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3135 { 3136 struct pcm_channel *ch; 3137 int ret; 3138 3139 ch = (wrch != NULL) ? wrch : rdch; 3140 if (ch != NULL) { 3141 CHN_LOCK(ch); 3142 ret = chn_oss_getorder(ch, map); 3143 CHN_UNLOCK(ch); 3144 } else 3145 ret = EINVAL; 3146 3147 return (ret); 3148 } 3149 3150 /** 3151 * @brief Specify channel interleaving order 3152 * 3153 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3154 * 3155 * @note As the ioctl definition is still under construction, FreeBSD 3156 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3157 * 3158 * @param wrch playback channel (optional; may be NULL) 3159 * @param rdch recording channel (optional; may be NULL) 3160 * @param map channel map 3161 * 3162 * @retval EINVAL Operation not yet supported. 3163 */ 3164 static int 3165 dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3166 { 3167 int ret; 3168 3169 ret = 0; 3170 3171 if (wrch != NULL) { 3172 CHN_LOCK(wrch); 3173 ret = chn_oss_setorder(wrch, map); 3174 CHN_UNLOCK(wrch); 3175 } 3176 3177 if (ret == 0 && rdch != NULL) { 3178 CHN_LOCK(rdch); 3179 ret = chn_oss_setorder(rdch, map); 3180 CHN_UNLOCK(rdch); 3181 } 3182 3183 return (ret); 3184 } 3185 3186 static int 3187 dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3188 int *mask) 3189 { 3190 struct pcm_channel *ch; 3191 uint32_t chnmask; 3192 int ret; 3193 3194 chnmask = 0; 3195 ch = (wrch != NULL) ? wrch : rdch; 3196 3197 if (ch != NULL) { 3198 CHN_LOCK(ch); 3199 ret = chn_oss_getmask(ch, &chnmask); 3200 CHN_UNLOCK(ch); 3201 } else 3202 ret = EINVAL; 3203 3204 if (ret == 0) 3205 *mask = chnmask; 3206 3207 return (ret); 3208 } 3209 3210 #ifdef OSSV4_EXPERIMENT 3211 /** 3212 * @brief Retrieve an audio device's label 3213 * 3214 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3215 * 3216 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3217 * for more details. 3218 * 3219 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3220 * consoles) can show variable "labels" for certain controls. By default 3221 * the application name (say quake) is shown as the label but 3222 * applications may change the labels themselves." 3223 * 3224 * @note As the ioctl definition is still under construction, FreeBSD 3225 * does not currently support @c SNDCTL_GETLABEL. 3226 * 3227 * @param wrch playback channel (optional; may be NULL) 3228 * @param rdch recording channel (optional; may be NULL) 3229 * @param label label gets copied here 3230 * 3231 * @retval EINVAL Operation not yet supported. 3232 */ 3233 static int 3234 dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3235 { 3236 return (EINVAL); 3237 } 3238 3239 /** 3240 * @brief Specify an audio device's label 3241 * 3242 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3243 * comments for @c dsp_oss_getlabel immediately above. 3244 * 3245 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3246 * for more details. 3247 * 3248 * @note As the ioctl definition is still under construction, FreeBSD 3249 * does not currently support SNDCTL_SETLABEL. 3250 * 3251 * @param wrch playback channel (optional; may be NULL) 3252 * @param rdch recording channel (optional; may be NULL) 3253 * @param label label gets copied from here 3254 * 3255 * @retval EINVAL Operation not yet supported. 3256 */ 3257 static int 3258 dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3259 { 3260 return (EINVAL); 3261 } 3262 3263 /** 3264 * @brief Retrieve name of currently played song 3265 * 3266 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3267 * tell the system the name of the currently playing song, which would be 3268 * visible in @c /dev/sndstat. 3269 * 3270 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3271 * for more details. 3272 * 3273 * @note As the ioctl definition is still under construction, FreeBSD 3274 * does not currently support SNDCTL_GETSONG. 3275 * 3276 * @param wrch playback channel (optional; may be NULL) 3277 * @param rdch recording channel (optional; may be NULL) 3278 * @param song song name gets copied here 3279 * 3280 * @retval EINVAL Operation not yet supported. 3281 */ 3282 static int 3283 dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3284 { 3285 return (EINVAL); 3286 } 3287 3288 /** 3289 * @brief Retrieve name of currently played song 3290 * 3291 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3292 * tell the system the name of the currently playing song, which would be 3293 * visible in @c /dev/sndstat. 3294 * 3295 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3296 * for more details. 3297 * 3298 * @note As the ioctl definition is still under construction, FreeBSD 3299 * does not currently support SNDCTL_SETSONG. 3300 * 3301 * @param wrch playback channel (optional; may be NULL) 3302 * @param rdch recording channel (optional; may be NULL) 3303 * @param song song name gets copied from here 3304 * 3305 * @retval EINVAL Operation not yet supported. 3306 */ 3307 static int 3308 dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3309 { 3310 return (EINVAL); 3311 } 3312 3313 /** 3314 * @brief Rename a device 3315 * 3316 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3317 * 3318 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3319 * more details. 3320 * 3321 * From Hannu@4Front: "This call is used to change the device name 3322 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3323 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3324 * name depending on the current context (for example 'OSS virtual wave table 3325 * synth' or 'VoIP link to London')." 3326 * 3327 * @note As the ioctl definition is still under construction, FreeBSD 3328 * does not currently support SNDCTL_SETNAME. 3329 * 3330 * @param wrch playback channel (optional; may be NULL) 3331 * @param rdch recording channel (optional; may be NULL) 3332 * @param name new device name gets copied from here 3333 * 3334 * @retval EINVAL Operation not yet supported. 3335 */ 3336 static int 3337 dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3338 { 3339 return (EINVAL); 3340 } 3341 #endif /* !OSSV4_EXPERIMENT */ 3342