1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 5 * Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006 6 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifdef HAVE_KERNEL_OPTION_HEADERS 32 #include "opt_snd.h" 33 #endif 34 35 #include <dev/sound/pcm/sound.h> 36 #include <sys/ctype.h> 37 #include <sys/lock.h> 38 #include <sys/rwlock.h> 39 #include <sys/sysent.h> 40 41 #include <vm/vm.h> 42 #include <vm/vm_object.h> 43 #include <vm/vm_page.h> 44 #include <vm/vm_pager.h> 45 46 SND_DECLARE_FILE("$FreeBSD$"); 47 48 static int dsp_mmap_allow_prot_exec = 0; 49 SYSCTL_INT(_hw_snd, OID_AUTO, compat_linux_mmap, CTLFLAG_RWTUN, 50 &dsp_mmap_allow_prot_exec, 0, 51 "linux mmap compatibility (-1=force disable 0=auto 1=force enable)"); 52 53 static int dsp_basename_clone = 1; 54 SYSCTL_INT(_hw_snd, OID_AUTO, basename_clone, CTLFLAG_RWTUN, 55 &dsp_basename_clone, 0, 56 "DSP basename cloning (0: Disable; 1: Enabled)"); 57 58 struct dsp_cdevinfo { 59 struct pcm_channel *rdch, *wrch; 60 struct pcm_channel *volch; 61 int busy, simplex; 62 TAILQ_ENTRY(dsp_cdevinfo) link; 63 }; 64 65 #define PCM_RDCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->rdch) 66 #define PCM_WRCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->wrch) 67 #define PCM_VOLCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->volch) 68 #define PCM_SIMPLEX(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->simplex) 69 70 #define DSP_CDEVINFO_CACHESIZE 8 71 72 #define DSP_REGISTERED(x, y) (PCM_REGISTERED(x) && \ 73 (y) != NULL && (y)->si_drv1 != NULL) 74 75 #define OLDPCM_IOCTL 76 77 static d_open_t dsp_open; 78 static d_close_t dsp_close; 79 static d_read_t dsp_read; 80 static d_write_t dsp_write; 81 static d_ioctl_t dsp_ioctl; 82 static d_poll_t dsp_poll; 83 static d_mmap_t dsp_mmap; 84 static d_mmap_single_t dsp_mmap_single; 85 86 struct cdevsw dsp_cdevsw = { 87 .d_version = D_VERSION, 88 .d_open = dsp_open, 89 .d_close = dsp_close, 90 .d_read = dsp_read, 91 .d_write = dsp_write, 92 .d_ioctl = dsp_ioctl, 93 .d_poll = dsp_poll, 94 .d_mmap = dsp_mmap, 95 .d_mmap_single = dsp_mmap_single, 96 .d_name = "dsp", 97 }; 98 99 static eventhandler_tag dsp_ehtag = NULL; 100 static int dsp_umax = -1; 101 static int dsp_cmax = -1; 102 103 static int dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group); 104 static int dsp_oss_syncstart(int sg_id); 105 static int dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy); 106 static int dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled); 107 static int dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 108 static int dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 109 static int dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, int *mask); 110 #ifdef OSSV4_EXPERIMENT 111 static int dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 112 static int dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 113 static int dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 114 static int dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 115 static int dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name); 116 #endif 117 118 static struct snddev_info * 119 dsp_get_info(struct cdev *dev) 120 { 121 return (devclass_get_softc(pcm_devclass, PCMUNIT(dev))); 122 } 123 124 static uint32_t 125 dsp_get_flags(struct cdev *dev) 126 { 127 device_t bdev; 128 129 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 130 131 return ((bdev != NULL) ? pcm_getflags(bdev) : 0xffffffff); 132 } 133 134 static void 135 dsp_set_flags(struct cdev *dev, uint32_t flags) 136 { 137 device_t bdev; 138 139 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 140 141 if (bdev != NULL) 142 pcm_setflags(bdev, flags); 143 } 144 145 /* 146 * return the channels associated with an open device instance. 147 * lock channels specified. 148 */ 149 static int 150 getchns(struct cdev *dev, struct pcm_channel **rdch, struct pcm_channel **wrch, 151 uint32_t prio) 152 { 153 struct snddev_info *d; 154 struct pcm_channel *ch; 155 uint32_t flags; 156 157 if (PCM_SIMPLEX(dev) != 0) { 158 d = dsp_get_info(dev); 159 if (!PCM_REGISTERED(d)) 160 return (ENXIO); 161 PCM_LOCK(d); 162 PCM_WAIT(d); 163 PCM_ACQUIRE(d); 164 /* 165 * Note: order is important - 166 * pcm flags -> prio query flags -> wild guess 167 */ 168 ch = NULL; 169 flags = dsp_get_flags(dev); 170 if (flags & SD_F_PRIO_WR) { 171 ch = PCM_RDCH(dev); 172 PCM_RDCH(dev) = NULL; 173 } else if (flags & SD_F_PRIO_RD) { 174 ch = PCM_WRCH(dev); 175 PCM_WRCH(dev) = NULL; 176 } else if (prio & SD_F_PRIO_WR) { 177 ch = PCM_RDCH(dev); 178 PCM_RDCH(dev) = NULL; 179 flags |= SD_F_PRIO_WR; 180 } else if (prio & SD_F_PRIO_RD) { 181 ch = PCM_WRCH(dev); 182 PCM_WRCH(dev) = NULL; 183 flags |= SD_F_PRIO_RD; 184 } else if (PCM_WRCH(dev) != NULL) { 185 ch = PCM_RDCH(dev); 186 PCM_RDCH(dev) = NULL; 187 flags |= SD_F_PRIO_WR; 188 } else if (PCM_RDCH(dev) != NULL) { 189 ch = PCM_WRCH(dev); 190 PCM_WRCH(dev) = NULL; 191 flags |= SD_F_PRIO_RD; 192 } 193 PCM_SIMPLEX(dev) = 0; 194 dsp_set_flags(dev, flags); 195 if (ch != NULL) { 196 CHN_LOCK(ch); 197 pcm_chnref(ch, -1); 198 pcm_chnrelease(ch); 199 } 200 PCM_RELEASE(d); 201 PCM_UNLOCK(d); 202 } 203 204 *rdch = PCM_RDCH(dev); 205 *wrch = PCM_WRCH(dev); 206 207 if (*rdch != NULL && (prio & SD_F_PRIO_RD)) 208 CHN_LOCK(*rdch); 209 if (*wrch != NULL && (prio & SD_F_PRIO_WR)) 210 CHN_LOCK(*wrch); 211 212 return (0); 213 } 214 215 /* unlock specified channels */ 216 static void 217 relchns(struct cdev *dev, struct pcm_channel *rdch, struct pcm_channel *wrch, 218 uint32_t prio) 219 { 220 if (wrch != NULL && (prio & SD_F_PRIO_WR)) 221 CHN_UNLOCK(wrch); 222 if (rdch != NULL && (prio & SD_F_PRIO_RD)) 223 CHN_UNLOCK(rdch); 224 } 225 226 static void 227 dsp_cdevinfo_alloc(struct cdev *dev, 228 struct pcm_channel *rdch, struct pcm_channel *wrch, 229 struct pcm_channel *volch) 230 { 231 struct snddev_info *d; 232 struct dsp_cdevinfo *cdi; 233 int simplex; 234 235 d = dsp_get_info(dev); 236 237 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 == NULL && 238 ((rdch == NULL && wrch == NULL) || rdch != wrch), 239 ("bogus %s(), what are you trying to accomplish here?", __func__)); 240 PCM_BUSYASSERT(d); 241 PCM_LOCKASSERT(d); 242 243 simplex = (dsp_get_flags(dev) & SD_F_SIMPLEX) ? 1 : 0; 244 245 /* 246 * Scan for free instance entry and put it into the end of list. 247 * Create new one if necessary. 248 */ 249 TAILQ_FOREACH(cdi, &d->dsp_cdevinfo_pool, link) { 250 if (cdi->busy != 0) 251 break; 252 cdi->rdch = rdch; 253 cdi->wrch = wrch; 254 cdi->volch = volch; 255 cdi->simplex = simplex; 256 cdi->busy = 1; 257 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 258 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 259 dev->si_drv1 = cdi; 260 return; 261 } 262 PCM_UNLOCK(d); 263 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 264 PCM_LOCK(d); 265 cdi->rdch = rdch; 266 cdi->wrch = wrch; 267 cdi->volch = volch; 268 cdi->simplex = simplex; 269 cdi->busy = 1; 270 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 271 dev->si_drv1 = cdi; 272 } 273 274 static void 275 dsp_cdevinfo_free(struct cdev *dev) 276 { 277 struct snddev_info *d; 278 struct dsp_cdevinfo *cdi, *tmp; 279 uint32_t flags; 280 int i; 281 282 d = dsp_get_info(dev); 283 284 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 != NULL && 285 PCM_RDCH(dev) == NULL && PCM_WRCH(dev) == NULL && 286 PCM_VOLCH(dev) == NULL, 287 ("bogus %s(), what are you trying to accomplish here?", __func__)); 288 PCM_BUSYASSERT(d); 289 PCM_LOCKASSERT(d); 290 291 cdi = dev->si_drv1; 292 dev->si_drv1 = NULL; 293 cdi->rdch = NULL; 294 cdi->wrch = NULL; 295 cdi->volch = NULL; 296 cdi->simplex = 0; 297 cdi->busy = 0; 298 299 /* 300 * Once it is free, move it back to the beginning of list for 301 * faster new entry allocation. 302 */ 303 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 304 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 305 306 /* 307 * Scan the list, cache free entries up to DSP_CDEVINFO_CACHESIZE. 308 * Reset simplex flags. 309 */ 310 flags = dsp_get_flags(dev) & ~SD_F_PRIO_SET; 311 i = DSP_CDEVINFO_CACHESIZE; 312 TAILQ_FOREACH_SAFE(cdi, &d->dsp_cdevinfo_pool, link, tmp) { 313 if (cdi->busy != 0) { 314 if (cdi->simplex == 0) { 315 if (cdi->rdch != NULL) 316 flags |= SD_F_PRIO_RD; 317 if (cdi->wrch != NULL) 318 flags |= SD_F_PRIO_WR; 319 } 320 } else { 321 if (i == 0) { 322 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 323 free(cdi, M_DEVBUF); 324 } else 325 i--; 326 } 327 } 328 dsp_set_flags(dev, flags); 329 } 330 331 void 332 dsp_cdevinfo_init(struct snddev_info *d) 333 { 334 struct dsp_cdevinfo *cdi; 335 int i; 336 337 KASSERT(d != NULL, ("NULL snddev_info")); 338 PCM_BUSYASSERT(d); 339 PCM_UNLOCKASSERT(d); 340 341 TAILQ_INIT(&d->dsp_cdevinfo_pool); 342 for (i = 0; i < DSP_CDEVINFO_CACHESIZE; i++) { 343 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 344 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 345 } 346 } 347 348 void 349 dsp_cdevinfo_flush(struct snddev_info *d) 350 { 351 struct dsp_cdevinfo *cdi, *tmp; 352 353 KASSERT(d != NULL, ("NULL snddev_info")); 354 PCM_BUSYASSERT(d); 355 PCM_UNLOCKASSERT(d); 356 357 cdi = TAILQ_FIRST(&d->dsp_cdevinfo_pool); 358 while (cdi != NULL) { 359 tmp = TAILQ_NEXT(cdi, link); 360 free(cdi, M_DEVBUF); 361 cdi = tmp; 362 } 363 TAILQ_INIT(&d->dsp_cdevinfo_pool); 364 } 365 366 /* duplex / simplex cdev type */ 367 enum { 368 DSP_CDEV_TYPE_RDONLY, /* simplex read-only (record) */ 369 DSP_CDEV_TYPE_WRONLY, /* simplex write-only (play) */ 370 DSP_CDEV_TYPE_RDWR /* duplex read, write, or both */ 371 }; 372 373 enum { 374 DSP_CDEV_VOLCTL_NONE, 375 DSP_CDEV_VOLCTL_READ, 376 DSP_CDEV_VOLCTL_WRITE 377 }; 378 379 #define DSP_F_VALID(x) ((x) & (FREAD | FWRITE)) 380 #define DSP_F_DUPLEX(x) (((x) & (FREAD | FWRITE)) == (FREAD | FWRITE)) 381 #define DSP_F_SIMPLEX(x) (!DSP_F_DUPLEX(x)) 382 #define DSP_F_READ(x) ((x) & FREAD) 383 #define DSP_F_WRITE(x) ((x) & FWRITE) 384 385 static const struct { 386 int type; 387 char *name; 388 char *sep; 389 char *alias; 390 int use_sep; 391 int hw; 392 int max; 393 int volctl; 394 uint32_t fmt, spd; 395 int query; 396 } dsp_cdevs[] = { 397 { SND_DEV_DSP, "dsp", ".", NULL, 0, 0, 0, 0, 398 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 399 DSP_CDEV_TYPE_RDWR }, 400 { SND_DEV_AUDIO, "audio", ".", NULL, 0, 0, 0, 0, 401 SND_FORMAT(AFMT_MU_LAW, 1, 0), DSP_DEFAULT_SPEED, 402 DSP_CDEV_TYPE_RDWR }, 403 { SND_DEV_DSP16, "dspW", ".", NULL, 0, 0, 0, 0, 404 SND_FORMAT(AFMT_S16_LE, 1, 0), DSP_DEFAULT_SPEED, 405 DSP_CDEV_TYPE_RDWR }, 406 { SND_DEV_DSPHW_PLAY, "dsp", ".p", NULL, 1, 1, SND_MAXHWCHAN, 1, 407 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 408 { SND_DEV_DSPHW_VPLAY, "dsp", ".vp", NULL, 1, 1, SND_MAXVCHANS, 1, 409 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 410 { SND_DEV_DSPHW_REC, "dsp", ".r", NULL, 1, 1, SND_MAXHWCHAN, 1, 411 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 412 { SND_DEV_DSPHW_VREC, "dsp", ".vr", NULL, 1, 1, SND_MAXVCHANS, 1, 413 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 414 { SND_DEV_DSPHW_CD, "dspcd", ".", NULL, 0, 0, 0, 0, 415 SND_FORMAT(AFMT_S16_LE, 2, 0), 44100, DSP_CDEV_TYPE_RDWR }, 416 /* Low priority, OSSv4 aliases. */ 417 { SND_DEV_DSP, "dsp_ac3", ".", "dsp", 0, 0, 0, 0, 418 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 419 DSP_CDEV_TYPE_RDWR }, 420 { SND_DEV_DSP, "dsp_mmap", ".", "dsp", 0, 0, 0, 0, 421 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 422 DSP_CDEV_TYPE_RDWR }, 423 { SND_DEV_DSP, "dsp_multich", ".", "dsp", 0, 0, 0, 0, 424 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 425 DSP_CDEV_TYPE_RDWR }, 426 { SND_DEV_DSP, "dsp_spdifout", ".", "dsp", 0, 0, 0, 0, 427 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 428 DSP_CDEV_TYPE_RDWR }, 429 { SND_DEV_DSP, "dsp_spdifin", ".", "dsp", 0, 0, 0, 0, 430 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 431 DSP_CDEV_TYPE_RDWR }, 432 }; 433 434 #define DSP_FIXUP_ERROR() do { \ 435 prio = dsp_get_flags(i_dev); \ 436 if (!DSP_F_VALID(flags)) \ 437 error = EINVAL; \ 438 if (!DSP_F_DUPLEX(flags) && \ 439 ((DSP_F_READ(flags) && d->reccount == 0) || \ 440 (DSP_F_WRITE(flags) && d->playcount == 0))) \ 441 error = ENOTSUP; \ 442 else if (!DSP_F_DUPLEX(flags) && (prio & SD_F_SIMPLEX) && \ 443 ((DSP_F_READ(flags) && (prio & SD_F_PRIO_WR)) || \ 444 (DSP_F_WRITE(flags) && (prio & SD_F_PRIO_RD)))) \ 445 error = EBUSY; \ 446 else if (DSP_REGISTERED(d, i_dev)) \ 447 error = EBUSY; \ 448 } while (0) 449 450 static int 451 dsp_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 452 { 453 struct pcm_channel *rdch, *wrch; 454 struct snddev_info *d; 455 uint32_t fmt, spd, prio, volctl; 456 int i, error, rderror, wrerror, devtype, wdevunit, rdevunit; 457 458 /* Kind of impossible.. */ 459 if (i_dev == NULL || td == NULL) 460 return (ENODEV); 461 462 d = dsp_get_info(i_dev); 463 if (PCM_DETACHING(d) || !PCM_REGISTERED(d)) 464 return (EBADF); 465 466 PCM_GIANT_ENTER(d); 467 468 /* Lock snddev so nobody else can monkey with it. */ 469 PCM_LOCK(d); 470 PCM_WAIT(d); 471 472 /* 473 * Try to acquire cloned device before someone else pick it. 474 * ENODEV means this is not a cloned droids. 475 */ 476 error = snd_clone_acquire(i_dev); 477 if (!(error == 0 || error == ENODEV)) { 478 DSP_FIXUP_ERROR(); 479 PCM_UNLOCK(d); 480 PCM_GIANT_EXIT(d); 481 return (error); 482 } 483 484 error = 0; 485 DSP_FIXUP_ERROR(); 486 487 if (error != 0) { 488 (void)snd_clone_release(i_dev); 489 PCM_UNLOCK(d); 490 PCM_GIANT_EXIT(d); 491 return (error); 492 } 493 494 /* 495 * That is just enough. Acquire and unlock pcm lock so 496 * the other will just have to wait until we finish doing 497 * everything. 498 */ 499 PCM_ACQUIRE(d); 500 PCM_UNLOCK(d); 501 502 devtype = PCMDEV(i_dev); 503 wdevunit = -1; 504 rdevunit = -1; 505 fmt = 0; 506 spd = 0; 507 volctl = DSP_CDEV_VOLCTL_NONE; 508 509 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 510 if (devtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 511 continue; 512 /* 513 * Volume control only valid for DSPHW devices, 514 * and it must be opened in opposite direction be it 515 * simplex or duplex. Anything else will be handled 516 * as usual. 517 */ 518 if (dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY) { 519 if (dsp_cdevs[i].volctl != 0 && 520 DSP_F_READ(flags)) { 521 volctl = DSP_CDEV_VOLCTL_WRITE; 522 flags &= ~FREAD; 523 flags |= FWRITE; 524 } 525 if (DSP_F_READ(flags)) { 526 (void)snd_clone_release(i_dev); 527 PCM_RELEASE_QUICK(d); 528 PCM_GIANT_EXIT(d); 529 return (ENOTSUP); 530 } 531 wdevunit = dev2unit(i_dev); 532 } else if (dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY) { 533 if (dsp_cdevs[i].volctl != 0 && 534 DSP_F_WRITE(flags)) { 535 volctl = DSP_CDEV_VOLCTL_READ; 536 flags &= ~FWRITE; 537 flags |= FREAD; 538 } 539 if (DSP_F_WRITE(flags)) { 540 (void)snd_clone_release(i_dev); 541 PCM_RELEASE_QUICK(d); 542 PCM_GIANT_EXIT(d); 543 return (ENOTSUP); 544 } 545 rdevunit = dev2unit(i_dev); 546 } 547 fmt = dsp_cdevs[i].fmt; 548 spd = dsp_cdevs[i].spd; 549 break; 550 } 551 552 /* No matching devtype? */ 553 if (fmt == 0 || spd == 0) 554 panic("impossible devtype %d", devtype); 555 556 rdch = NULL; 557 wrch = NULL; 558 rderror = 0; 559 wrerror = 0; 560 561 /* 562 * if we get here, the open request is valid- either: 563 * * we were previously not open 564 * * we were open for play xor record and the opener wants 565 * the non-open direction 566 */ 567 if (DSP_F_READ(flags)) { 568 /* open for read */ 569 rderror = pcm_chnalloc(d, &rdch, PCMDIR_REC, 570 td->td_proc->p_pid, td->td_proc->p_comm, rdevunit); 571 572 if (rderror == 0 && chn_reset(rdch, fmt, spd) != 0) 573 rderror = ENXIO; 574 575 if (volctl == DSP_CDEV_VOLCTL_READ) 576 rderror = 0; 577 578 if (rderror != 0) { 579 if (rdch != NULL) 580 pcm_chnrelease(rdch); 581 if (!DSP_F_DUPLEX(flags)) { 582 (void)snd_clone_release(i_dev); 583 PCM_RELEASE_QUICK(d); 584 PCM_GIANT_EXIT(d); 585 return (rderror); 586 } 587 rdch = NULL; 588 } else if (volctl == DSP_CDEV_VOLCTL_READ) { 589 if (rdch != NULL) { 590 pcm_chnref(rdch, 1); 591 pcm_chnrelease(rdch); 592 } 593 } else { 594 if (flags & O_NONBLOCK) 595 rdch->flags |= CHN_F_NBIO; 596 if (flags & O_EXCL) 597 rdch->flags |= CHN_F_EXCLUSIVE; 598 pcm_chnref(rdch, 1); 599 if (volctl == DSP_CDEV_VOLCTL_NONE) 600 chn_vpc_reset(rdch, SND_VOL_C_PCM, 0); 601 CHN_UNLOCK(rdch); 602 } 603 } 604 605 if (DSP_F_WRITE(flags)) { 606 /* open for write */ 607 wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY, 608 td->td_proc->p_pid, td->td_proc->p_comm, wdevunit); 609 610 if (wrerror == 0 && chn_reset(wrch, fmt, spd) != 0) 611 wrerror = ENXIO; 612 613 if (volctl == DSP_CDEV_VOLCTL_WRITE) 614 wrerror = 0; 615 616 if (wrerror != 0) { 617 if (wrch != NULL) 618 pcm_chnrelease(wrch); 619 if (!DSP_F_DUPLEX(flags)) { 620 if (rdch != NULL) { 621 /* 622 * Lock, deref and release previously 623 * created record channel 624 */ 625 CHN_LOCK(rdch); 626 pcm_chnref(rdch, -1); 627 pcm_chnrelease(rdch); 628 } 629 (void)snd_clone_release(i_dev); 630 PCM_RELEASE_QUICK(d); 631 PCM_GIANT_EXIT(d); 632 return (wrerror); 633 } 634 wrch = NULL; 635 } else if (volctl == DSP_CDEV_VOLCTL_WRITE) { 636 if (wrch != NULL) { 637 pcm_chnref(wrch, 1); 638 pcm_chnrelease(wrch); 639 } 640 } else { 641 if (flags & O_NONBLOCK) 642 wrch->flags |= CHN_F_NBIO; 643 if (flags & O_EXCL) 644 wrch->flags |= CHN_F_EXCLUSIVE; 645 pcm_chnref(wrch, 1); 646 if (volctl == DSP_CDEV_VOLCTL_NONE) 647 chn_vpc_reset(wrch, SND_VOL_C_PCM, 0); 648 CHN_UNLOCK(wrch); 649 } 650 } 651 652 PCM_LOCK(d); 653 654 /* 655 * We're done. Allocate channels information for this cdev. 656 */ 657 switch (volctl) { 658 case DSP_CDEV_VOLCTL_READ: 659 KASSERT(wrch == NULL, ("wrch=%p not null!", wrch)); 660 dsp_cdevinfo_alloc(i_dev, NULL, NULL, rdch); 661 break; 662 case DSP_CDEV_VOLCTL_WRITE: 663 KASSERT(rdch == NULL, ("rdch=%p not null!", rdch)); 664 dsp_cdevinfo_alloc(i_dev, NULL, NULL, wrch); 665 break; 666 case DSP_CDEV_VOLCTL_NONE: 667 default: 668 if (wrch == NULL && rdch == NULL) { 669 (void)snd_clone_release(i_dev); 670 PCM_RELEASE(d); 671 PCM_UNLOCK(d); 672 PCM_GIANT_EXIT(d); 673 if (wrerror != 0) 674 return (wrerror); 675 if (rderror != 0) 676 return (rderror); 677 return (EINVAL); 678 } 679 dsp_cdevinfo_alloc(i_dev, rdch, wrch, NULL); 680 if (rdch != NULL) 681 CHN_INSERT_HEAD(d, rdch, channels.pcm.opened); 682 if (wrch != NULL) 683 CHN_INSERT_HEAD(d, wrch, channels.pcm.opened); 684 break; 685 } 686 687 /* 688 * Increase clone refcount for its automatic garbage collector. 689 */ 690 (void)snd_clone_ref(i_dev); 691 692 PCM_RELEASE(d); 693 PCM_UNLOCK(d); 694 695 PCM_GIANT_LEAVE(d); 696 697 return (0); 698 } 699 700 static int 701 dsp_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 702 { 703 struct pcm_channel *rdch, *wrch, *volch; 704 struct snddev_info *d; 705 int sg_ids, rdref, wdref; 706 707 d = dsp_get_info(i_dev); 708 if (!DSP_REGISTERED(d, i_dev)) 709 return (EBADF); 710 711 PCM_GIANT_ENTER(d); 712 713 PCM_LOCK(d); 714 PCM_WAIT(d); 715 PCM_ACQUIRE(d); 716 717 rdch = PCM_RDCH(i_dev); 718 wrch = PCM_WRCH(i_dev); 719 volch = PCM_VOLCH(i_dev); 720 721 PCM_RDCH(i_dev) = NULL; 722 PCM_WRCH(i_dev) = NULL; 723 PCM_VOLCH(i_dev) = NULL; 724 725 rdref = -1; 726 wdref = -1; 727 728 if (volch != NULL) { 729 if (volch == rdch) 730 rdref--; 731 else if (volch == wrch) 732 wdref--; 733 else { 734 CHN_LOCK(volch); 735 pcm_chnref(volch, -1); 736 CHN_UNLOCK(volch); 737 } 738 } 739 740 if (rdch != NULL) 741 CHN_REMOVE(d, rdch, channels.pcm.opened); 742 if (wrch != NULL) 743 CHN_REMOVE(d, wrch, channels.pcm.opened); 744 745 if (rdch != NULL || wrch != NULL) { 746 PCM_UNLOCK(d); 747 if (rdch != NULL) { 748 /* 749 * The channel itself need not be locked because: 750 * a) Adding a channel to a syncgroup happens only 751 * in dsp_ioctl(), which cannot run concurrently 752 * to dsp_close(). 753 * b) The syncmember pointer (sm) is protected by 754 * the global syncgroup list lock. 755 * c) A channel can't just disappear, invalidating 756 * pointers, unless it's closed/dereferenced 757 * first. 758 */ 759 PCM_SG_LOCK(); 760 sg_ids = chn_syncdestroy(rdch); 761 PCM_SG_UNLOCK(); 762 if (sg_ids != 0) 763 free_unr(pcmsg_unrhdr, sg_ids); 764 765 CHN_LOCK(rdch); 766 pcm_chnref(rdch, rdref); 767 chn_abort(rdch); /* won't sleep */ 768 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 769 CHN_F_DEAD | CHN_F_EXCLUSIVE); 770 chn_reset(rdch, 0, 0); 771 pcm_chnrelease(rdch); 772 } 773 if (wrch != NULL) { 774 /* 775 * Please see block above. 776 */ 777 PCM_SG_LOCK(); 778 sg_ids = chn_syncdestroy(wrch); 779 PCM_SG_UNLOCK(); 780 if (sg_ids != 0) 781 free_unr(pcmsg_unrhdr, sg_ids); 782 783 CHN_LOCK(wrch); 784 pcm_chnref(wrch, wdref); 785 chn_flush(wrch); /* may sleep */ 786 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 787 CHN_F_DEAD | CHN_F_EXCLUSIVE); 788 chn_reset(wrch, 0, 0); 789 pcm_chnrelease(wrch); 790 } 791 PCM_LOCK(d); 792 } 793 794 dsp_cdevinfo_free(i_dev); 795 /* 796 * Release clone busy state and unref it so the automatic 797 * garbage collector will get the hint and do the remaining 798 * cleanup process. 799 */ 800 (void)snd_clone_release(i_dev); 801 802 /* 803 * destroy_dev() might sleep, so release pcm lock 804 * here and rely on pcm cv serialization. 805 */ 806 PCM_UNLOCK(d); 807 (void)snd_clone_unref(i_dev); 808 PCM_LOCK(d); 809 810 PCM_RELEASE(d); 811 PCM_UNLOCK(d); 812 813 PCM_GIANT_LEAVE(d); 814 815 return (0); 816 } 817 818 static __inline int 819 dsp_io_ops(struct cdev *i_dev, struct uio *buf) 820 { 821 struct snddev_info *d; 822 struct pcm_channel **ch, *rdch, *wrch; 823 int (*chn_io)(struct pcm_channel *, struct uio *); 824 int prio, ret; 825 pid_t runpid; 826 827 KASSERT(i_dev != NULL && buf != NULL && 828 (buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE), 829 ("%s(): io train wreck!", __func__)); 830 831 d = dsp_get_info(i_dev); 832 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 833 return (EBADF); 834 835 PCM_GIANT_ENTER(d); 836 837 switch (buf->uio_rw) { 838 case UIO_READ: 839 prio = SD_F_PRIO_RD; 840 ch = &rdch; 841 chn_io = chn_read; 842 break; 843 case UIO_WRITE: 844 prio = SD_F_PRIO_WR; 845 ch = &wrch; 846 chn_io = chn_write; 847 break; 848 default: 849 panic("invalid/corrupted uio direction: %d", buf->uio_rw); 850 break; 851 } 852 853 rdch = NULL; 854 wrch = NULL; 855 runpid = buf->uio_td->td_proc->p_pid; 856 857 getchns(i_dev, &rdch, &wrch, prio); 858 859 if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) { 860 PCM_GIANT_EXIT(d); 861 return (EBADF); 862 } 863 864 if (((*ch)->flags & (CHN_F_MMAP | CHN_F_DEAD)) || 865 (((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) { 866 relchns(i_dev, rdch, wrch, prio); 867 PCM_GIANT_EXIT(d); 868 return (EINVAL); 869 } else if (!((*ch)->flags & CHN_F_RUNNING)) { 870 (*ch)->flags |= CHN_F_RUNNING; 871 (*ch)->pid = runpid; 872 } 873 874 /* 875 * chn_read/write must give up channel lock in order to copy bytes 876 * from/to userland, so up the "in progress" counter to make sure 877 * someone else doesn't come along and muss up the buffer. 878 */ 879 ++(*ch)->inprog; 880 ret = chn_io(*ch, buf); 881 --(*ch)->inprog; 882 883 CHN_BROADCAST(&(*ch)->cv); 884 885 relchns(i_dev, rdch, wrch, prio); 886 887 PCM_GIANT_LEAVE(d); 888 889 return (ret); 890 } 891 892 static int 893 dsp_read(struct cdev *i_dev, struct uio *buf, int flag) 894 { 895 return (dsp_io_ops(i_dev, buf)); 896 } 897 898 static int 899 dsp_write(struct cdev *i_dev, struct uio *buf, int flag) 900 { 901 return (dsp_io_ops(i_dev, buf)); 902 } 903 904 static int 905 dsp_get_volume_channel(struct cdev *dev, struct pcm_channel **volch) 906 { 907 struct snddev_info *d; 908 struct pcm_channel *c; 909 int unit; 910 911 KASSERT(dev != NULL && volch != NULL, 912 ("%s(): NULL query dev=%p volch=%p", __func__, dev, volch)); 913 914 d = dsp_get_info(dev); 915 if (!PCM_REGISTERED(d)) { 916 *volch = NULL; 917 return (EINVAL); 918 } 919 920 PCM_UNLOCKASSERT(d); 921 922 *volch = NULL; 923 924 c = PCM_VOLCH(dev); 925 if (c != NULL) { 926 if (!(c->feederflags & (1 << FEEDER_VOLUME))) 927 return (-1); 928 *volch = c; 929 return (0); 930 } 931 932 PCM_LOCK(d); 933 PCM_WAIT(d); 934 PCM_ACQUIRE(d); 935 936 unit = dev2unit(dev); 937 938 CHN_FOREACH(c, d, channels.pcm) { 939 CHN_LOCK(c); 940 if (c->unit != unit) { 941 CHN_UNLOCK(c); 942 continue; 943 } 944 *volch = c; 945 pcm_chnref(c, 1); 946 PCM_VOLCH(dev) = c; 947 CHN_UNLOCK(c); 948 PCM_RELEASE(d); 949 PCM_UNLOCK(d); 950 return ((c->feederflags & (1 << FEEDER_VOLUME)) ? 0 : -1); 951 } 952 953 PCM_RELEASE(d); 954 PCM_UNLOCK(d); 955 956 return (EINVAL); 957 } 958 959 static int 960 dsp_ioctl_channel(struct cdev *dev, struct pcm_channel *volch, u_long cmd, 961 caddr_t arg) 962 { 963 struct snddev_info *d; 964 struct pcm_channel *rdch, *wrch; 965 int j, devtype, ret; 966 967 d = dsp_get_info(dev); 968 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 969 return (-1); 970 971 PCM_UNLOCKASSERT(d); 972 973 j = cmd & 0xff; 974 975 rdch = PCM_RDCH(dev); 976 wrch = PCM_WRCH(dev); 977 978 /* No specific channel, look into cache */ 979 if (volch == NULL) 980 volch = PCM_VOLCH(dev); 981 982 /* Look harder */ 983 if (volch == NULL) { 984 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 985 volch = rdch; 986 else if (j == SOUND_MIXER_PCM && wrch != NULL) 987 volch = wrch; 988 } 989 990 devtype = PCMDEV(dev); 991 992 /* Look super harder */ 993 if (volch == NULL && 994 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 995 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 996 ret = dsp_get_volume_channel(dev, &volch); 997 if (ret != 0) 998 return (ret); 999 if (volch == NULL) 1000 return (EINVAL); 1001 } 1002 1003 /* Final validation */ 1004 if (volch != NULL) { 1005 CHN_LOCK(volch); 1006 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 1007 CHN_UNLOCK(volch); 1008 return (-1); 1009 } 1010 if (volch->direction == PCMDIR_PLAY) 1011 wrch = volch; 1012 else 1013 rdch = volch; 1014 } 1015 1016 ret = EINVAL; 1017 1018 if (volch != NULL && 1019 ((j == SOUND_MIXER_PCM && volch->direction == PCMDIR_PLAY) || 1020 (j == SOUND_MIXER_RECLEV && volch->direction == PCMDIR_REC))) { 1021 if ((cmd & ~0xff) == MIXER_WRITE(0)) { 1022 int left, right, center; 1023 1024 left = *(int *)arg & 0x7f; 1025 right = ((*(int *)arg) >> 8) & 0x7f; 1026 center = (left + right) >> 1; 1027 chn_setvolume_multi(volch, SND_VOL_C_PCM, left, right, 1028 center); 1029 } else if ((cmd & ~0xff) == MIXER_READ(0)) { 1030 *(int *)arg = CHN_GETVOLUME(volch, 1031 SND_VOL_C_PCM, SND_CHN_T_FL); 1032 *(int *)arg |= CHN_GETVOLUME(volch, 1033 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1034 } 1035 ret = 0; 1036 } else if (rdch != NULL || wrch != NULL) { 1037 switch (j) { 1038 case SOUND_MIXER_DEVMASK: 1039 case SOUND_MIXER_CAPS: 1040 case SOUND_MIXER_STEREODEVS: 1041 if ((cmd & ~0xff) == MIXER_READ(0)) { 1042 *(int *)arg = 0; 1043 if (rdch != NULL) 1044 *(int *)arg |= SOUND_MASK_RECLEV; 1045 if (wrch != NULL) 1046 *(int *)arg |= SOUND_MASK_PCM; 1047 } 1048 ret = 0; 1049 break; 1050 case SOUND_MIXER_RECMASK: 1051 case SOUND_MIXER_RECSRC: 1052 if ((cmd & ~0xff) == MIXER_READ(0)) 1053 *(int *)arg = 0; 1054 ret = 0; 1055 break; 1056 default: 1057 break; 1058 } 1059 } 1060 1061 if (volch != NULL) 1062 CHN_UNLOCK(volch); 1063 1064 return (ret); 1065 } 1066 1067 static int 1068 dsp_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1069 struct thread *td) 1070 { 1071 struct pcm_channel *chn, *rdch, *wrch; 1072 struct snddev_info *d; 1073 u_long xcmd; 1074 int *arg_i, ret, tmp; 1075 1076 d = dsp_get_info(i_dev); 1077 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 1078 return (EBADF); 1079 1080 PCM_GIANT_ENTER(d); 1081 1082 arg_i = (int *)arg; 1083 ret = 0; 1084 xcmd = 0; 1085 chn = NULL; 1086 1087 if (IOCGROUP(cmd) == 'M') { 1088 if (cmd == OSS_GETVERSION) { 1089 *arg_i = SOUND_VERSION; 1090 PCM_GIANT_EXIT(d); 1091 return (0); 1092 } 1093 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1094 if (ret != -1) { 1095 PCM_GIANT_EXIT(d); 1096 return (ret); 1097 } 1098 1099 if (d->mixer_dev != NULL) { 1100 PCM_ACQUIRE_QUICK(d); 1101 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1102 MIXER_CMD_DIRECT); 1103 PCM_RELEASE_QUICK(d); 1104 } else 1105 ret = EBADF; 1106 1107 PCM_GIANT_EXIT(d); 1108 1109 return (ret); 1110 } 1111 1112 /* 1113 * Certain ioctls may be made on any type of device (audio, mixer, 1114 * and MIDI). Handle those special cases here. 1115 */ 1116 if (IOCGROUP(cmd) == 'X') { 1117 PCM_ACQUIRE_QUICK(d); 1118 switch(cmd) { 1119 case SNDCTL_SYSINFO: 1120 sound_oss_sysinfo((oss_sysinfo *)arg); 1121 break; 1122 case SNDCTL_CARDINFO: 1123 ret = sound_oss_card_info((oss_card_info *)arg); 1124 break; 1125 case SNDCTL_AUDIOINFO: 1126 case SNDCTL_AUDIOINFO_EX: 1127 case SNDCTL_ENGINEINFO: 1128 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1129 break; 1130 case SNDCTL_MIXERINFO: 1131 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1132 break; 1133 default: 1134 ret = EINVAL; 1135 } 1136 PCM_RELEASE_QUICK(d); 1137 PCM_GIANT_EXIT(d); 1138 return (ret); 1139 } 1140 1141 getchns(i_dev, &rdch, &wrch, 0); 1142 1143 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1144 wrch = NULL; 1145 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1146 rdch = NULL; 1147 1148 if (wrch == NULL && rdch == NULL) { 1149 PCM_GIANT_EXIT(d); 1150 return (EINVAL); 1151 } 1152 1153 switch(cmd) { 1154 #ifdef OLDPCM_IOCTL 1155 /* 1156 * we start with the new ioctl interface. 1157 */ 1158 case AIONWRITE: /* how many bytes can write ? */ 1159 if (wrch) { 1160 CHN_LOCK(wrch); 1161 /* 1162 if (wrch && wrch->bufhard.dl) 1163 while (chn_wrfeed(wrch) == 0); 1164 */ 1165 *arg_i = sndbuf_getfree(wrch->bufsoft); 1166 CHN_UNLOCK(wrch); 1167 } else { 1168 *arg_i = 0; 1169 ret = EINVAL; 1170 } 1171 break; 1172 1173 case AIOSSIZE: /* set the current blocksize */ 1174 { 1175 struct snd_size *p = (struct snd_size *)arg; 1176 1177 p->play_size = 0; 1178 p->rec_size = 0; 1179 PCM_ACQUIRE_QUICK(d); 1180 if (wrch) { 1181 CHN_LOCK(wrch); 1182 chn_setblocksize(wrch, 2, p->play_size); 1183 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1184 CHN_UNLOCK(wrch); 1185 } 1186 if (rdch) { 1187 CHN_LOCK(rdch); 1188 chn_setblocksize(rdch, 2, p->rec_size); 1189 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1190 CHN_UNLOCK(rdch); 1191 } 1192 PCM_RELEASE_QUICK(d); 1193 } 1194 break; 1195 case AIOGSIZE: /* get the current blocksize */ 1196 { 1197 struct snd_size *p = (struct snd_size *)arg; 1198 1199 if (wrch) { 1200 CHN_LOCK(wrch); 1201 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1202 CHN_UNLOCK(wrch); 1203 } 1204 if (rdch) { 1205 CHN_LOCK(rdch); 1206 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1207 CHN_UNLOCK(rdch); 1208 } 1209 } 1210 break; 1211 1212 case AIOSFMT: 1213 case AIOGFMT: 1214 { 1215 snd_chan_param *p = (snd_chan_param *)arg; 1216 1217 if (cmd == AIOSFMT && 1218 ((p->play_format != 0 && p->play_rate == 0) || 1219 (p->rec_format != 0 && p->rec_rate == 0))) { 1220 ret = EINVAL; 1221 break; 1222 } 1223 PCM_ACQUIRE_QUICK(d); 1224 if (wrch) { 1225 CHN_LOCK(wrch); 1226 if (cmd == AIOSFMT && p->play_format != 0) { 1227 chn_setformat(wrch, 1228 SND_FORMAT(p->play_format, 1229 AFMT_CHANNEL(wrch->format), 1230 AFMT_EXTCHANNEL(wrch->format))); 1231 chn_setspeed(wrch, p->play_rate); 1232 } 1233 p->play_rate = wrch->speed; 1234 p->play_format = AFMT_ENCODING(wrch->format); 1235 CHN_UNLOCK(wrch); 1236 } else { 1237 p->play_rate = 0; 1238 p->play_format = 0; 1239 } 1240 if (rdch) { 1241 CHN_LOCK(rdch); 1242 if (cmd == AIOSFMT && p->rec_format != 0) { 1243 chn_setformat(rdch, 1244 SND_FORMAT(p->rec_format, 1245 AFMT_CHANNEL(rdch->format), 1246 AFMT_EXTCHANNEL(rdch->format))); 1247 chn_setspeed(rdch, p->rec_rate); 1248 } 1249 p->rec_rate = rdch->speed; 1250 p->rec_format = AFMT_ENCODING(rdch->format); 1251 CHN_UNLOCK(rdch); 1252 } else { 1253 p->rec_rate = 0; 1254 p->rec_format = 0; 1255 } 1256 PCM_RELEASE_QUICK(d); 1257 } 1258 break; 1259 1260 case AIOGCAP: /* get capabilities */ 1261 { 1262 snd_capabilities *p = (snd_capabilities *)arg; 1263 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1264 struct cdev *pdev; 1265 1266 PCM_LOCK(d); 1267 if (rdch) { 1268 CHN_LOCK(rdch); 1269 rcaps = chn_getcaps(rdch); 1270 } 1271 if (wrch) { 1272 CHN_LOCK(wrch); 1273 pcaps = chn_getcaps(wrch); 1274 } 1275 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1276 pcaps? pcaps->minspeed : 0); 1277 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1278 pcaps? pcaps->maxspeed : 1000000); 1279 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1280 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1281 /* XXX bad on sb16 */ 1282 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1283 (wrch? chn_getformats(wrch) : 0xffffffff); 1284 if (rdch && wrch) 1285 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1286 pdev = d->mixer_dev; 1287 p->mixers = 1; /* default: one mixer */ 1288 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1289 p->left = p->right = 100; 1290 if (wrch) 1291 CHN_UNLOCK(wrch); 1292 if (rdch) 1293 CHN_UNLOCK(rdch); 1294 PCM_UNLOCK(d); 1295 } 1296 break; 1297 1298 case AIOSTOP: 1299 if (*arg_i == AIOSYNC_PLAY && wrch) { 1300 CHN_LOCK(wrch); 1301 *arg_i = chn_abort(wrch); 1302 CHN_UNLOCK(wrch); 1303 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1304 CHN_LOCK(rdch); 1305 *arg_i = chn_abort(rdch); 1306 CHN_UNLOCK(rdch); 1307 } else { 1308 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1309 *arg_i = 0; 1310 } 1311 break; 1312 1313 case AIOSYNC: 1314 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1315 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1316 break; 1317 #endif 1318 /* 1319 * here follow the standard ioctls (filio.h etc.) 1320 */ 1321 case FIONREAD: /* get # bytes to read */ 1322 if (rdch) { 1323 CHN_LOCK(rdch); 1324 /* if (rdch && rdch->bufhard.dl) 1325 while (chn_rdfeed(rdch) == 0); 1326 */ 1327 *arg_i = sndbuf_getready(rdch->bufsoft); 1328 CHN_UNLOCK(rdch); 1329 } else { 1330 *arg_i = 0; 1331 ret = EINVAL; 1332 } 1333 break; 1334 1335 case FIOASYNC: /*set/clear async i/o */ 1336 DEB( printf("FIOASYNC\n") ; ) 1337 break; 1338 1339 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1340 case FIONBIO: /* set/clear non-blocking i/o */ 1341 if (rdch) { 1342 CHN_LOCK(rdch); 1343 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1344 rdch->flags |= CHN_F_NBIO; 1345 else 1346 rdch->flags &= ~CHN_F_NBIO; 1347 CHN_UNLOCK(rdch); 1348 } 1349 if (wrch) { 1350 CHN_LOCK(wrch); 1351 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1352 wrch->flags |= CHN_F_NBIO; 1353 else 1354 wrch->flags &= ~CHN_F_NBIO; 1355 CHN_UNLOCK(wrch); 1356 } 1357 break; 1358 1359 /* 1360 * Finally, here is the linux-compatible ioctl interface 1361 */ 1362 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1363 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1364 case SNDCTL_DSP_GETBLKSIZE: 1365 chn = wrch ? wrch : rdch; 1366 if (chn) { 1367 CHN_LOCK(chn); 1368 *arg_i = sndbuf_getblksz(chn->bufsoft); 1369 CHN_UNLOCK(chn); 1370 } else { 1371 *arg_i = 0; 1372 ret = EINVAL; 1373 } 1374 break; 1375 1376 case SNDCTL_DSP_SETBLKSIZE: 1377 RANGE(*arg_i, 16, 65536); 1378 PCM_ACQUIRE_QUICK(d); 1379 if (wrch) { 1380 CHN_LOCK(wrch); 1381 chn_setblocksize(wrch, 2, *arg_i); 1382 CHN_UNLOCK(wrch); 1383 } 1384 if (rdch) { 1385 CHN_LOCK(rdch); 1386 chn_setblocksize(rdch, 2, *arg_i); 1387 CHN_UNLOCK(rdch); 1388 } 1389 PCM_RELEASE_QUICK(d); 1390 break; 1391 1392 case SNDCTL_DSP_RESET: 1393 DEB(printf("dsp reset\n")); 1394 if (wrch) { 1395 CHN_LOCK(wrch); 1396 chn_abort(wrch); 1397 chn_resetbuf(wrch); 1398 CHN_UNLOCK(wrch); 1399 } 1400 if (rdch) { 1401 CHN_LOCK(rdch); 1402 chn_abort(rdch); 1403 chn_resetbuf(rdch); 1404 CHN_UNLOCK(rdch); 1405 } 1406 break; 1407 1408 case SNDCTL_DSP_SYNC: 1409 DEB(printf("dsp sync\n")); 1410 /* chn_sync may sleep */ 1411 if (wrch) { 1412 CHN_LOCK(wrch); 1413 chn_sync(wrch, 0); 1414 CHN_UNLOCK(wrch); 1415 } 1416 break; 1417 1418 case SNDCTL_DSP_SPEED: 1419 /* chn_setspeed may sleep */ 1420 tmp = 0; 1421 PCM_ACQUIRE_QUICK(d); 1422 if (wrch) { 1423 CHN_LOCK(wrch); 1424 ret = chn_setspeed(wrch, *arg_i); 1425 tmp = wrch->speed; 1426 CHN_UNLOCK(wrch); 1427 } 1428 if (rdch && ret == 0) { 1429 CHN_LOCK(rdch); 1430 ret = chn_setspeed(rdch, *arg_i); 1431 if (tmp == 0) 1432 tmp = rdch->speed; 1433 CHN_UNLOCK(rdch); 1434 } 1435 PCM_RELEASE_QUICK(d); 1436 *arg_i = tmp; 1437 break; 1438 1439 case SOUND_PCM_READ_RATE: 1440 chn = wrch ? wrch : rdch; 1441 if (chn) { 1442 CHN_LOCK(chn); 1443 *arg_i = chn->speed; 1444 CHN_UNLOCK(chn); 1445 } else { 1446 *arg_i = 0; 1447 ret = EINVAL; 1448 } 1449 break; 1450 1451 case SNDCTL_DSP_STEREO: 1452 tmp = -1; 1453 *arg_i = (*arg_i)? 2 : 1; 1454 PCM_ACQUIRE_QUICK(d); 1455 if (wrch) { 1456 CHN_LOCK(wrch); 1457 ret = chn_setformat(wrch, 1458 SND_FORMAT(wrch->format, *arg_i, 0)); 1459 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1460 CHN_UNLOCK(wrch); 1461 } 1462 if (rdch && ret == 0) { 1463 CHN_LOCK(rdch); 1464 ret = chn_setformat(rdch, 1465 SND_FORMAT(rdch->format, *arg_i, 0)); 1466 if (tmp == -1) 1467 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1468 CHN_UNLOCK(rdch); 1469 } 1470 PCM_RELEASE_QUICK(d); 1471 *arg_i = tmp; 1472 break; 1473 1474 case SOUND_PCM_WRITE_CHANNELS: 1475 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1476 if (*arg_i < 0) { 1477 *arg_i = 0; 1478 ret = EINVAL; 1479 break; 1480 } 1481 if (*arg_i != 0) { 1482 struct pcmchan_matrix *m; 1483 uint32_t ext; 1484 1485 tmp = 0; 1486 if (*arg_i > SND_CHN_MAX) 1487 *arg_i = SND_CHN_MAX; 1488 1489 m = feeder_matrix_default_channel_map(*arg_i); 1490 if (m != NULL) 1491 ext = m->ext; 1492 else 1493 ext = 0; 1494 1495 PCM_ACQUIRE_QUICK(d); 1496 if (wrch) { 1497 CHN_LOCK(wrch); 1498 ret = chn_setformat(wrch, 1499 SND_FORMAT(wrch->format, *arg_i, ext)); 1500 tmp = AFMT_CHANNEL(wrch->format); 1501 CHN_UNLOCK(wrch); 1502 } 1503 if (rdch && ret == 0) { 1504 CHN_LOCK(rdch); 1505 ret = chn_setformat(rdch, 1506 SND_FORMAT(rdch->format, *arg_i, ext)); 1507 if (tmp == 0) 1508 tmp = AFMT_CHANNEL(rdch->format); 1509 CHN_UNLOCK(rdch); 1510 } 1511 PCM_RELEASE_QUICK(d); 1512 *arg_i = tmp; 1513 } else { 1514 chn = wrch ? wrch : rdch; 1515 CHN_LOCK(chn); 1516 *arg_i = AFMT_CHANNEL(chn->format); 1517 CHN_UNLOCK(chn); 1518 } 1519 break; 1520 1521 case SOUND_PCM_READ_CHANNELS: 1522 chn = wrch ? wrch : rdch; 1523 if (chn) { 1524 CHN_LOCK(chn); 1525 *arg_i = AFMT_CHANNEL(chn->format); 1526 CHN_UNLOCK(chn); 1527 } else { 1528 *arg_i = 0; 1529 ret = EINVAL; 1530 } 1531 break; 1532 1533 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1534 chn = wrch ? wrch : rdch; 1535 if (chn) { 1536 CHN_LOCK(chn); 1537 *arg_i = chn_getformats(chn); 1538 CHN_UNLOCK(chn); 1539 } else { 1540 *arg_i = 0; 1541 ret = EINVAL; 1542 } 1543 break; 1544 1545 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1546 if (*arg_i != AFMT_QUERY) { 1547 tmp = 0; 1548 PCM_ACQUIRE_QUICK(d); 1549 if (wrch) { 1550 CHN_LOCK(wrch); 1551 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1552 AFMT_CHANNEL(wrch->format), 1553 AFMT_EXTCHANNEL(wrch->format))); 1554 tmp = wrch->format; 1555 CHN_UNLOCK(wrch); 1556 } 1557 if (rdch && ret == 0) { 1558 CHN_LOCK(rdch); 1559 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1560 AFMT_CHANNEL(rdch->format), 1561 AFMT_EXTCHANNEL(rdch->format))); 1562 if (tmp == 0) 1563 tmp = rdch->format; 1564 CHN_UNLOCK(rdch); 1565 } 1566 PCM_RELEASE_QUICK(d); 1567 *arg_i = AFMT_ENCODING(tmp); 1568 } else { 1569 chn = wrch ? wrch : rdch; 1570 CHN_LOCK(chn); 1571 *arg_i = AFMT_ENCODING(chn->format); 1572 CHN_UNLOCK(chn); 1573 } 1574 break; 1575 1576 case SNDCTL_DSP_SETFRAGMENT: 1577 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1578 { 1579 uint32_t fragln = (*arg_i) & 0x0000ffff; 1580 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1581 uint32_t fragsz; 1582 uint32_t r_maxfrags, r_fragsz; 1583 1584 RANGE(fragln, 4, 16); 1585 fragsz = 1 << fragln; 1586 1587 if (maxfrags == 0) 1588 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1589 if (maxfrags < 2) 1590 maxfrags = 2; 1591 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1592 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1593 1594 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1595 PCM_ACQUIRE_QUICK(d); 1596 if (rdch) { 1597 CHN_LOCK(rdch); 1598 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1599 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1600 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1601 CHN_UNLOCK(rdch); 1602 } else { 1603 r_maxfrags = maxfrags; 1604 r_fragsz = fragsz; 1605 } 1606 if (wrch && ret == 0) { 1607 CHN_LOCK(wrch); 1608 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1609 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1610 fragsz = sndbuf_getblksz(wrch->bufsoft); 1611 CHN_UNLOCK(wrch); 1612 } else { /* use whatever came from the read channel */ 1613 maxfrags = r_maxfrags; 1614 fragsz = r_fragsz; 1615 } 1616 PCM_RELEASE_QUICK(d); 1617 1618 fragln = 0; 1619 while (fragsz > 1) { 1620 fragln++; 1621 fragsz >>= 1; 1622 } 1623 *arg_i = (maxfrags << 16) | fragln; 1624 } 1625 break; 1626 1627 case SNDCTL_DSP_GETISPACE: 1628 /* return the size of data available in the input queue */ 1629 { 1630 audio_buf_info *a = (audio_buf_info *)arg; 1631 if (rdch) { 1632 struct snd_dbuf *bs = rdch->bufsoft; 1633 1634 CHN_LOCK(rdch); 1635 a->bytes = sndbuf_getready(bs); 1636 a->fragments = a->bytes / sndbuf_getblksz(bs); 1637 a->fragstotal = sndbuf_getblkcnt(bs); 1638 a->fragsize = sndbuf_getblksz(bs); 1639 CHN_UNLOCK(rdch); 1640 } else 1641 ret = EINVAL; 1642 } 1643 break; 1644 1645 case SNDCTL_DSP_GETOSPACE: 1646 /* return space available in the output queue */ 1647 { 1648 audio_buf_info *a = (audio_buf_info *)arg; 1649 if (wrch) { 1650 struct snd_dbuf *bs = wrch->bufsoft; 1651 1652 CHN_LOCK(wrch); 1653 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1654 a->bytes = sndbuf_getfree(bs); 1655 a->fragments = a->bytes / sndbuf_getblksz(bs); 1656 a->fragstotal = sndbuf_getblkcnt(bs); 1657 a->fragsize = sndbuf_getblksz(bs); 1658 CHN_UNLOCK(wrch); 1659 } else 1660 ret = EINVAL; 1661 } 1662 break; 1663 1664 case SNDCTL_DSP_GETIPTR: 1665 { 1666 count_info *a = (count_info *)arg; 1667 if (rdch) { 1668 struct snd_dbuf *bs = rdch->bufsoft; 1669 1670 CHN_LOCK(rdch); 1671 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1672 a->bytes = sndbuf_gettotal(bs); 1673 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1674 a->ptr = sndbuf_getfreeptr(bs); 1675 rdch->blocks = sndbuf_getblocks(bs); 1676 CHN_UNLOCK(rdch); 1677 } else 1678 ret = EINVAL; 1679 } 1680 break; 1681 1682 case SNDCTL_DSP_GETOPTR: 1683 { 1684 count_info *a = (count_info *)arg; 1685 if (wrch) { 1686 struct snd_dbuf *bs = wrch->bufsoft; 1687 1688 CHN_LOCK(wrch); 1689 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1690 a->bytes = sndbuf_gettotal(bs); 1691 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1692 a->ptr = sndbuf_getreadyptr(bs); 1693 wrch->blocks = sndbuf_getblocks(bs); 1694 CHN_UNLOCK(wrch); 1695 } else 1696 ret = EINVAL; 1697 } 1698 break; 1699 1700 case SNDCTL_DSP_GETCAPS: 1701 PCM_LOCK(d); 1702 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1703 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1704 *arg_i |= PCM_CAP_DUPLEX; 1705 if (rdch && (rdch->flags & CHN_F_VIRTUAL) != 0) 1706 *arg_i |= PCM_CAP_VIRTUAL; 1707 if (wrch && (wrch->flags & CHN_F_VIRTUAL) != 0) 1708 *arg_i |= PCM_CAP_VIRTUAL; 1709 PCM_UNLOCK(d); 1710 break; 1711 1712 case SOUND_PCM_READ_BITS: 1713 chn = wrch ? wrch : rdch; 1714 if (chn) { 1715 CHN_LOCK(chn); 1716 if (chn->format & AFMT_8BIT) 1717 *arg_i = 8; 1718 else if (chn->format & AFMT_16BIT) 1719 *arg_i = 16; 1720 else if (chn->format & AFMT_24BIT) 1721 *arg_i = 24; 1722 else if (chn->format & AFMT_32BIT) 1723 *arg_i = 32; 1724 else 1725 ret = EINVAL; 1726 CHN_UNLOCK(chn); 1727 } else { 1728 *arg_i = 0; 1729 ret = EINVAL; 1730 } 1731 break; 1732 1733 case SNDCTL_DSP_SETTRIGGER: 1734 if (rdch) { 1735 CHN_LOCK(rdch); 1736 rdch->flags &= ~CHN_F_NOTRIGGER; 1737 if (*arg_i & PCM_ENABLE_INPUT) 1738 chn_start(rdch, 1); 1739 else { 1740 chn_abort(rdch); 1741 chn_resetbuf(rdch); 1742 rdch->flags |= CHN_F_NOTRIGGER; 1743 } 1744 CHN_UNLOCK(rdch); 1745 } 1746 if (wrch) { 1747 CHN_LOCK(wrch); 1748 wrch->flags &= ~CHN_F_NOTRIGGER; 1749 if (*arg_i & PCM_ENABLE_OUTPUT) 1750 chn_start(wrch, 1); 1751 else { 1752 chn_abort(wrch); 1753 chn_resetbuf(wrch); 1754 wrch->flags |= CHN_F_NOTRIGGER; 1755 } 1756 CHN_UNLOCK(wrch); 1757 } 1758 break; 1759 1760 case SNDCTL_DSP_GETTRIGGER: 1761 *arg_i = 0; 1762 if (wrch) { 1763 CHN_LOCK(wrch); 1764 if (wrch->flags & CHN_F_TRIGGERED) 1765 *arg_i |= PCM_ENABLE_OUTPUT; 1766 CHN_UNLOCK(wrch); 1767 } 1768 if (rdch) { 1769 CHN_LOCK(rdch); 1770 if (rdch->flags & CHN_F_TRIGGERED) 1771 *arg_i |= PCM_ENABLE_INPUT; 1772 CHN_UNLOCK(rdch); 1773 } 1774 break; 1775 1776 case SNDCTL_DSP_GETODELAY: 1777 if (wrch) { 1778 struct snd_dbuf *bs = wrch->bufsoft; 1779 1780 CHN_LOCK(wrch); 1781 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1782 *arg_i = sndbuf_getready(bs); 1783 CHN_UNLOCK(wrch); 1784 } else 1785 ret = EINVAL; 1786 break; 1787 1788 case SNDCTL_DSP_POST: 1789 if (wrch) { 1790 CHN_LOCK(wrch); 1791 wrch->flags &= ~CHN_F_NOTRIGGER; 1792 chn_start(wrch, 1); 1793 CHN_UNLOCK(wrch); 1794 } 1795 break; 1796 1797 case SNDCTL_DSP_SETDUPLEX: 1798 /* 1799 * switch to full-duplex mode if card is in half-duplex 1800 * mode and is able to work in full-duplex mode 1801 */ 1802 PCM_LOCK(d); 1803 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1804 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1805 PCM_UNLOCK(d); 1806 break; 1807 1808 /* 1809 * The following four ioctls are simple wrappers around mixer_ioctl 1810 * with no further processing. xcmd is short for "translated 1811 * command". 1812 */ 1813 case SNDCTL_DSP_GETRECVOL: 1814 if (xcmd == 0) { 1815 xcmd = SOUND_MIXER_READ_RECLEV; 1816 chn = rdch; 1817 } 1818 /* FALLTHROUGH */ 1819 case SNDCTL_DSP_SETRECVOL: 1820 if (xcmd == 0) { 1821 xcmd = SOUND_MIXER_WRITE_RECLEV; 1822 chn = rdch; 1823 } 1824 /* FALLTHROUGH */ 1825 case SNDCTL_DSP_GETPLAYVOL: 1826 if (xcmd == 0) { 1827 xcmd = SOUND_MIXER_READ_PCM; 1828 chn = wrch; 1829 } 1830 /* FALLTHROUGH */ 1831 case SNDCTL_DSP_SETPLAYVOL: 1832 if (xcmd == 0) { 1833 xcmd = SOUND_MIXER_WRITE_PCM; 1834 chn = wrch; 1835 } 1836 1837 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1838 if (ret != -1) { 1839 PCM_GIANT_EXIT(d); 1840 return (ret); 1841 } 1842 1843 if (d->mixer_dev != NULL) { 1844 PCM_ACQUIRE_QUICK(d); 1845 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1846 MIXER_CMD_DIRECT); 1847 PCM_RELEASE_QUICK(d); 1848 } else 1849 ret = ENOTSUP; 1850 1851 break; 1852 1853 case SNDCTL_DSP_GET_RECSRC_NAMES: 1854 case SNDCTL_DSP_GET_RECSRC: 1855 case SNDCTL_DSP_SET_RECSRC: 1856 if (d->mixer_dev != NULL) { 1857 PCM_ACQUIRE_QUICK(d); 1858 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1859 MIXER_CMD_DIRECT); 1860 PCM_RELEASE_QUICK(d); 1861 } else 1862 ret = ENOTSUP; 1863 break; 1864 1865 /* 1866 * The following 3 ioctls aren't very useful at the moment. For 1867 * now, only a single channel is associated with a cdev (/dev/dspN 1868 * instance), so there's only a single output routing to use (i.e., 1869 * the wrch bound to this cdev). 1870 */ 1871 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1872 { 1873 oss_mixer_enuminfo *ei; 1874 ei = (oss_mixer_enuminfo *)arg; 1875 ei->dev = 0; 1876 ei->ctrl = 0; 1877 ei->version = 0; /* static for now */ 1878 ei->strindex[0] = 0; 1879 1880 if (wrch != NULL) { 1881 ei->nvalues = 1; 1882 strlcpy(ei->strings, wrch->name, 1883 sizeof(ei->strings)); 1884 } else { 1885 ei->nvalues = 0; 1886 ei->strings[0] = '\0'; 1887 } 1888 } 1889 break; 1890 case SNDCTL_DSP_GET_PLAYTGT: 1891 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1892 /* 1893 * Re: SET_PLAYTGT 1894 * OSSv4: "The value that was accepted by the device will 1895 * be returned back in the variable pointed by the 1896 * argument." 1897 */ 1898 if (wrch != NULL) 1899 *arg_i = 0; 1900 else 1901 ret = EINVAL; 1902 break; 1903 1904 case SNDCTL_DSP_SILENCE: 1905 /* 1906 * Flush the software (pre-feed) buffer, but try to minimize playback 1907 * interruption. (I.e., record unplayed samples with intent to 1908 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1909 * functionality. 1910 */ 1911 if (wrch == NULL) 1912 ret = EINVAL; 1913 else { 1914 struct snd_dbuf *bs; 1915 CHN_LOCK(wrch); 1916 while (wrch->inprog != 0) 1917 cv_wait(&wrch->cv, wrch->lock); 1918 bs = wrch->bufsoft; 1919 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1920 bs->sl = sndbuf_getready(bs); 1921 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1922 sndbuf_fillsilence(bs); 1923 chn_start(wrch, 0); 1924 } 1925 CHN_UNLOCK(wrch); 1926 } 1927 break; 1928 1929 case SNDCTL_DSP_SKIP: 1930 /* 1931 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1932 * playback buffer by moving the current write position immediately 1933 * before the point where the device is currently reading the samples." 1934 */ 1935 if (wrch == NULL) 1936 ret = EINVAL; 1937 else { 1938 struct snd_dbuf *bs; 1939 CHN_LOCK(wrch); 1940 while (wrch->inprog != 0) 1941 cv_wait(&wrch->cv, wrch->lock); 1942 bs = wrch->bufsoft; 1943 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1944 sndbuf_softreset(bs); 1945 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1946 bs->sl = 0; 1947 chn_start(wrch, 0); 1948 } 1949 CHN_UNLOCK(wrch); 1950 } 1951 break; 1952 1953 case SNDCTL_DSP_CURRENT_OPTR: 1954 case SNDCTL_DSP_CURRENT_IPTR: 1955 /** 1956 * @note Changing formats resets the buffer counters, which differs 1957 * from the 4Front drivers. However, I don't expect this to be 1958 * much of a problem. 1959 * 1960 * @note In a test where @c CURRENT_OPTR is called immediately after write 1961 * returns, this driver is about 32K samples behind whereas 1962 * 4Front's is about 8K samples behind. Should determine source 1963 * of discrepancy, even if only out of curiosity. 1964 * 1965 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1966 */ 1967 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1968 if (chn == NULL) 1969 ret = EINVAL; 1970 else { 1971 struct snd_dbuf *bs; 1972 /* int tmp; */ 1973 1974 oss_count_t *oc = (oss_count_t *)arg; 1975 1976 CHN_LOCK(chn); 1977 bs = chn->bufsoft; 1978 #if 0 1979 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1980 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1981 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1982 #else 1983 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1984 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1985 #endif 1986 CHN_UNLOCK(chn); 1987 } 1988 break; 1989 1990 case SNDCTL_DSP_HALT_OUTPUT: 1991 case SNDCTL_DSP_HALT_INPUT: 1992 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1993 if (chn == NULL) 1994 ret = EINVAL; 1995 else { 1996 CHN_LOCK(chn); 1997 chn_abort(chn); 1998 CHN_UNLOCK(chn); 1999 } 2000 break; 2001 2002 case SNDCTL_DSP_LOW_WATER: 2003 /* 2004 * Set the number of bytes required to attract attention by 2005 * select/poll. 2006 */ 2007 if (wrch != NULL) { 2008 CHN_LOCK(wrch); 2009 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 2010 CHN_UNLOCK(wrch); 2011 } 2012 if (rdch != NULL) { 2013 CHN_LOCK(rdch); 2014 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2015 CHN_UNLOCK(rdch); 2016 } 2017 break; 2018 2019 case SNDCTL_DSP_GETERROR: 2020 /* 2021 * OSSv4 docs: "All errors and counters will automatically be 2022 * cleared to zeroes after the call so each call will return only 2023 * the errors that occurred after the previous invocation. ... The 2024 * play_underruns and rec_overrun fields are the only useful fields 2025 * returned by OSS 4.0." 2026 */ 2027 { 2028 audio_errinfo *ei = (audio_errinfo *)arg; 2029 2030 bzero((void *)ei, sizeof(*ei)); 2031 2032 if (wrch != NULL) { 2033 CHN_LOCK(wrch); 2034 ei->play_underruns = wrch->xruns; 2035 wrch->xruns = 0; 2036 CHN_UNLOCK(wrch); 2037 } 2038 if (rdch != NULL) { 2039 CHN_LOCK(rdch); 2040 ei->rec_overruns = rdch->xruns; 2041 rdch->xruns = 0; 2042 CHN_UNLOCK(rdch); 2043 } 2044 } 2045 break; 2046 2047 case SNDCTL_DSP_SYNCGROUP: 2048 PCM_ACQUIRE_QUICK(d); 2049 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2050 PCM_RELEASE_QUICK(d); 2051 break; 2052 2053 case SNDCTL_DSP_SYNCSTART: 2054 PCM_ACQUIRE_QUICK(d); 2055 ret = dsp_oss_syncstart(*arg_i); 2056 PCM_RELEASE_QUICK(d); 2057 break; 2058 2059 case SNDCTL_DSP_POLICY: 2060 PCM_ACQUIRE_QUICK(d); 2061 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2062 PCM_RELEASE_QUICK(d); 2063 break; 2064 2065 case SNDCTL_DSP_COOKEDMODE: 2066 PCM_ACQUIRE_QUICK(d); 2067 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2068 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2069 PCM_RELEASE_QUICK(d); 2070 break; 2071 case SNDCTL_DSP_GET_CHNORDER: 2072 PCM_ACQUIRE_QUICK(d); 2073 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2074 PCM_RELEASE_QUICK(d); 2075 break; 2076 case SNDCTL_DSP_SET_CHNORDER: 2077 PCM_ACQUIRE_QUICK(d); 2078 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2079 PCM_RELEASE_QUICK(d); 2080 break; 2081 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2082 PCM_ACQUIRE_QUICK(d); 2083 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2084 PCM_RELEASE_QUICK(d); 2085 break; 2086 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2087 ret = EINVAL; 2088 break; 2089 #ifdef OSSV4_EXPERIMENT 2090 /* 2091 * XXX The following ioctls are not yet supported and just return 2092 * EINVAL. 2093 */ 2094 case SNDCTL_DSP_GETOPEAKS: 2095 case SNDCTL_DSP_GETIPEAKS: 2096 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2097 if (chn == NULL) 2098 ret = EINVAL; 2099 else { 2100 oss_peaks_t *op = (oss_peaks_t *)arg; 2101 int lpeak, rpeak; 2102 2103 CHN_LOCK(chn); 2104 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2105 if (ret == -1) 2106 ret = EINVAL; 2107 else { 2108 (*op)[0] = lpeak; 2109 (*op)[1] = rpeak; 2110 } 2111 CHN_UNLOCK(chn); 2112 } 2113 break; 2114 2115 /* 2116 * XXX Once implemented, revisit this for proper cv protection 2117 * (if necessary). 2118 */ 2119 case SNDCTL_GETLABEL: 2120 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2121 break; 2122 case SNDCTL_SETLABEL: 2123 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2124 break; 2125 case SNDCTL_GETSONG: 2126 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2127 break; 2128 case SNDCTL_SETSONG: 2129 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2130 break; 2131 case SNDCTL_SETNAME: 2132 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2133 break; 2134 #if 0 2135 /** 2136 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2137 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2138 * 4Front Technologies. 2139 */ 2140 case SNDCTL_DSP_READCTL: 2141 case SNDCTL_DSP_WRITECTL: 2142 ret = EINVAL; 2143 break; 2144 #endif /* !0 (explicitly omitted ioctls) */ 2145 2146 #endif /* !OSSV4_EXPERIMENT */ 2147 case SNDCTL_DSP_MAPINBUF: 2148 case SNDCTL_DSP_MAPOUTBUF: 2149 case SNDCTL_DSP_SETSYNCRO: 2150 /* undocumented */ 2151 2152 case SNDCTL_DSP_SUBDIVIDE: 2153 case SOUND_PCM_WRITE_FILTER: 2154 case SOUND_PCM_READ_FILTER: 2155 /* dunno what these do, don't sound important */ 2156 2157 default: 2158 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2159 ret = EINVAL; 2160 break; 2161 } 2162 2163 PCM_GIANT_LEAVE(d); 2164 2165 return (ret); 2166 } 2167 2168 static int 2169 dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2170 { 2171 struct snddev_info *d; 2172 struct pcm_channel *wrch, *rdch; 2173 int ret, e; 2174 2175 d = dsp_get_info(i_dev); 2176 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) { 2177 /* XXX many clients don't understand POLLNVAL */ 2178 return (events & (POLLHUP | POLLPRI | POLLIN | 2179 POLLRDNORM | POLLOUT | POLLWRNORM)); 2180 } 2181 PCM_GIANT_ENTER(d); 2182 2183 wrch = NULL; 2184 rdch = NULL; 2185 ret = 0; 2186 2187 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2188 2189 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2190 e = (events & (POLLOUT | POLLWRNORM)); 2191 if (e) 2192 ret |= chn_poll(wrch, e, td); 2193 } 2194 2195 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2196 e = (events & (POLLIN | POLLRDNORM)); 2197 if (e) 2198 ret |= chn_poll(rdch, e, td); 2199 } 2200 2201 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2202 2203 PCM_GIANT_LEAVE(d); 2204 2205 return (ret); 2206 } 2207 2208 static int 2209 dsp_mmap(struct cdev *i_dev, vm_ooffset_t offset, vm_paddr_t *paddr, 2210 int nprot, vm_memattr_t *memattr) 2211 { 2212 2213 /* 2214 * offset is in range due to checks in dsp_mmap_single(). 2215 * XXX memattr is not honored. 2216 */ 2217 *paddr = vtophys(offset); 2218 return (0); 2219 } 2220 2221 static int 2222 dsp_mmap_single(struct cdev *i_dev, vm_ooffset_t *offset, 2223 vm_size_t size, struct vm_object **object, int nprot) 2224 { 2225 struct snddev_info *d; 2226 struct pcm_channel *wrch, *rdch, *c; 2227 2228 /* 2229 * Reject PROT_EXEC by default. It just doesn't makes sense. 2230 * Unfortunately, we have to give up this one due to linux_mmap 2231 * changes. 2232 * 2233 * https://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2234 * 2235 */ 2236 #ifdef SV_ABI_LINUX 2237 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2238 (dsp_mmap_allow_prot_exec == 0 && 2239 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2240 #else 2241 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2242 #endif 2243 return (EINVAL); 2244 2245 /* 2246 * PROT_READ (alone) selects the input buffer. 2247 * PROT_WRITE (alone) selects the output buffer. 2248 * PROT_WRITE|PROT_READ together select the output buffer. 2249 */ 2250 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2251 return (EINVAL); 2252 2253 d = dsp_get_info(i_dev); 2254 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 2255 return (EINVAL); 2256 2257 PCM_GIANT_ENTER(d); 2258 2259 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2260 2261 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2262 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2263 (*offset + size) > sndbuf_getsize(c->bufsoft) || 2264 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2265 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2266 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2267 PCM_GIANT_EXIT(d); 2268 return (EINVAL); 2269 } 2270 2271 if (wrch != NULL) 2272 wrch->flags |= CHN_F_MMAP; 2273 if (rdch != NULL) 2274 rdch->flags |= CHN_F_MMAP; 2275 2276 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2277 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2278 *object = vm_pager_allocate(OBJT_DEVICE, i_dev, 2279 size, nprot, *offset, curthread->td_ucred); 2280 2281 PCM_GIANT_LEAVE(d); 2282 2283 if (*object == NULL) 2284 return (EINVAL); 2285 return (0); 2286 } 2287 2288 /* So much for dev_stdclone() */ 2289 static int 2290 dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2291 { 2292 size_t len; 2293 2294 len = strlen(namep); 2295 2296 if (bcmp(name, namep, len) != 0) 2297 return (ENODEV); 2298 2299 name += len; 2300 2301 if (isdigit(*name) == 0) 2302 return (ENODEV); 2303 2304 len = strlen(sep); 2305 2306 if (*name == '0' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2307 return (ENODEV); 2308 2309 for (*u = 0; isdigit(*name) != 0; name++) { 2310 *u *= 10; 2311 *u += *name - '0'; 2312 if (*u > dsp_umax) 2313 return (ENODEV); 2314 } 2315 2316 if (*name == '\0') 2317 return ((use_sep == 0) ? 0 : ENODEV); 2318 2319 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2320 return (ENODEV); 2321 2322 name += len; 2323 2324 if (*name == '0' && name[1] != '\0') 2325 return (ENODEV); 2326 2327 for (*c = 0; isdigit(*name) != 0; name++) { 2328 *c *= 10; 2329 *c += *name - '0'; 2330 if (*c > dsp_cmax) 2331 return (ENODEV); 2332 } 2333 2334 if (*name != '\0') 2335 return (ENODEV); 2336 2337 return (0); 2338 } 2339 2340 static void 2341 dsp_clone(void *arg, 2342 struct ucred *cred, 2343 char *name, int namelen, struct cdev **dev) 2344 { 2345 struct snddev_info *d; 2346 struct snd_clone_entry *ce; 2347 struct pcm_channel *c; 2348 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2349 char *devname, *devcmp, *devsep; 2350 2351 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2352 2353 if (*dev != NULL) 2354 return; 2355 2356 unit = -1; 2357 cunit = -1; 2358 devtype = -1; 2359 devhw = 0; 2360 devcmax = -1; 2361 tumax = -1; 2362 devname = NULL; 2363 devsep = NULL; 2364 2365 for (i = 0; unit == -1 && 2366 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2367 devtype = dsp_cdevs[i].type; 2368 devcmp = dsp_cdevs[i].name; 2369 devsep = dsp_cdevs[i].sep; 2370 devname = dsp_cdevs[i].alias; 2371 if (devname == NULL) 2372 devname = devcmp; 2373 devhw = dsp_cdevs[i].hw; 2374 devcmax = dsp_cdevs[i].max - 1; 2375 if (strcmp(name, devcmp) == 0) { 2376 if (dsp_basename_clone != 0) 2377 unit = snd_unit; 2378 } else if (dsp_stdclone(name, devcmp, devsep, 2379 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2380 unit = -1; 2381 cunit = -1; 2382 } 2383 } 2384 2385 d = devclass_get_softc(pcm_devclass, unit); 2386 if (!PCM_REGISTERED(d) || d->clones == NULL) 2387 return; 2388 2389 /* XXX Need Giant magic entry ??? */ 2390 2391 PCM_LOCK(d); 2392 if (snd_clone_disabled(d->clones)) { 2393 PCM_UNLOCK(d); 2394 return; 2395 } 2396 2397 PCM_WAIT(d); 2398 PCM_ACQUIRE(d); 2399 PCM_UNLOCK(d); 2400 2401 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2402 2403 if (devhw != 0) { 2404 KASSERT(devcmax <= dsp_cmax, 2405 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2406 if (cunit > devcmax) { 2407 PCM_RELEASE_QUICK(d); 2408 return; 2409 } 2410 udcmask |= snd_c2unit(cunit); 2411 CHN_FOREACH(c, d, channels.pcm) { 2412 CHN_LOCK(c); 2413 if (c->unit != udcmask) { 2414 CHN_UNLOCK(c); 2415 continue; 2416 } 2417 CHN_UNLOCK(c); 2418 udcmask &= ~snd_c2unit(cunit); 2419 /* 2420 * Temporarily increase clone maxunit to overcome 2421 * vchan flexibility. 2422 * 2423 * # sysctl dev.pcm.0.play.vchans=256 2424 * dev.pcm.0.play.vchans: 1 -> 256 2425 * # cat /dev/zero > /dev/dsp0.vp255 & 2426 * [1] 17296 2427 * # sysctl dev.pcm.0.play.vchans=0 2428 * dev.pcm.0.play.vchans: 256 -> 1 2429 * # fg 2430 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2431 * ^C 2432 * # cat /dev/zero > /dev/dsp0.vp255 2433 * zsh: operation not supported: /dev/dsp0.vp255 2434 */ 2435 tumax = snd_clone_getmaxunit(d->clones); 2436 if (cunit > tumax) 2437 snd_clone_setmaxunit(d->clones, cunit); 2438 else 2439 tumax = -1; 2440 goto dsp_clone_alloc; 2441 } 2442 /* 2443 * Ok, so we're requesting unallocated vchan, but still 2444 * within maximum vchan limit. 2445 */ 2446 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2447 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2448 cunit < snd_maxautovchans) { 2449 udcmask &= ~snd_c2unit(cunit); 2450 tumax = snd_clone_getmaxunit(d->clones); 2451 if (cunit > tumax) 2452 snd_clone_setmaxunit(d->clones, cunit); 2453 else 2454 tumax = -1; 2455 goto dsp_clone_alloc; 2456 } 2457 PCM_RELEASE_QUICK(d); 2458 return; 2459 } 2460 2461 dsp_clone_alloc: 2462 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2463 if (tumax != -1) 2464 snd_clone_setmaxunit(d->clones, tumax); 2465 if (ce != NULL) { 2466 udcmask |= snd_c2unit(cunit); 2467 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2468 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2469 devname, unit, devsep, cunit); 2470 snd_clone_register(ce, *dev); 2471 } 2472 2473 PCM_RELEASE_QUICK(d); 2474 2475 if (*dev != NULL) 2476 dev_ref(*dev); 2477 } 2478 2479 static void 2480 dsp_sysinit(void *p) 2481 { 2482 if (dsp_ehtag != NULL) 2483 return; 2484 /* initialize unit numbering */ 2485 snd_unit_init(); 2486 dsp_umax = PCMMAXUNIT; 2487 dsp_cmax = PCMMAXCHAN; 2488 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2489 } 2490 2491 static void 2492 dsp_sysuninit(void *p) 2493 { 2494 if (dsp_ehtag == NULL) 2495 return; 2496 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2497 dsp_ehtag = NULL; 2498 } 2499 2500 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2501 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2502 2503 char * 2504 dsp_unit2name(char *buf, size_t len, int unit) 2505 { 2506 int i, dtype; 2507 2508 KASSERT(buf != NULL && len != 0, 2509 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2510 2511 dtype = snd_unit2d(unit); 2512 2513 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2514 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2515 continue; 2516 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2517 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2518 return (buf); 2519 } 2520 2521 return (NULL); 2522 } 2523 2524 /** 2525 * @brief Handler for SNDCTL_AUDIOINFO. 2526 * 2527 * Gathers information about the audio device specified in ai->dev. If 2528 * ai->dev == -1, then this function gathers information about the current 2529 * device. If the call comes in on a non-audio device and ai->dev == -1, 2530 * return EINVAL. 2531 * 2532 * This routine is supposed to go practically straight to the hardware, 2533 * getting capabilities directly from the sound card driver, side-stepping 2534 * the intermediate channel interface. 2535 * 2536 * Note, however, that the usefulness of this command is significantly 2537 * decreased when requesting info about any device other than the one serving 2538 * the request. While each snddev_channel refers to a specific device node, 2539 * the converse is *not* true. Currently, when a sound device node is opened, 2540 * the sound subsystem scans for an available audio channel (or channels, if 2541 * opened in read+write) and then assigns them to the si_drv[12] private 2542 * data fields. As a result, any information returned linking a channel to 2543 * a specific character device isn't necessarily accurate. 2544 * 2545 * @note 2546 * Calling threads must not hold any snddev_info or pcm_channel locks. 2547 * 2548 * @param dev device on which the ioctl was issued 2549 * @param ai ioctl request data container 2550 * 2551 * @retval 0 success 2552 * @retval EINVAL ai->dev specifies an invalid device 2553 * 2554 * @todo Verify correctness of Doxygen tags. ;) 2555 */ 2556 int 2557 dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2558 { 2559 struct pcmchan_caps *caps; 2560 struct pcm_channel *ch; 2561 struct snddev_info *d; 2562 uint32_t fmts; 2563 int i, nchan, *rates, minch, maxch; 2564 char *devname, buf[CHN_NAMELEN]; 2565 2566 /* 2567 * If probing the device that received the ioctl, make sure it's a 2568 * DSP device. (Users may use this ioctl with /dev/mixer and 2569 * /dev/midi.) 2570 */ 2571 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2572 return (EINVAL); 2573 2574 ch = NULL; 2575 devname = NULL; 2576 nchan = 0; 2577 bzero(buf, sizeof(buf)); 2578 2579 /* 2580 * Search for the requested audio device (channel). Start by 2581 * iterating over pcm devices. 2582 */ 2583 for (i = 0; pcm_devclass != NULL && 2584 i < devclass_get_maxunit(pcm_devclass); i++) { 2585 d = devclass_get_softc(pcm_devclass, i); 2586 if (!PCM_REGISTERED(d)) 2587 continue; 2588 2589 /* XXX Need Giant magic entry ??? */ 2590 2591 /* See the note in function docblock */ 2592 PCM_UNLOCKASSERT(d); 2593 PCM_LOCK(d); 2594 2595 CHN_FOREACH(ch, d, channels.pcm) { 2596 CHN_UNLOCKASSERT(ch); 2597 CHN_LOCK(ch); 2598 if (ai->dev == -1) { 2599 if (DSP_REGISTERED(d, i_dev) && 2600 (ch == PCM_RDCH(i_dev) || /* record ch */ 2601 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2602 devname = dsp_unit2name(buf, 2603 sizeof(buf), ch->unit); 2604 } 2605 } else if (ai->dev == nchan) { 2606 devname = dsp_unit2name(buf, sizeof(buf), 2607 ch->unit); 2608 } 2609 if (devname != NULL) 2610 break; 2611 CHN_UNLOCK(ch); 2612 ++nchan; 2613 } 2614 2615 if (devname != NULL) { 2616 /* 2617 * At this point, the following synchronization stuff 2618 * has happened: 2619 * - a specific PCM device is locked. 2620 * - a specific audio channel has been locked, so be 2621 * sure to unlock when exiting; 2622 */ 2623 2624 caps = chn_getcaps(ch); 2625 2626 /* 2627 * With all handles collected, zero out the user's 2628 * container and begin filling in its fields. 2629 */ 2630 bzero((void *)ai, sizeof(oss_audioinfo)); 2631 2632 ai->dev = nchan; 2633 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2634 2635 if ((ch->flags & CHN_F_BUSY) == 0) 2636 ai->busy = 0; 2637 else 2638 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2639 2640 /** 2641 * @note 2642 * @c cmd - OSSv4 docs: "Only supported under Linux at 2643 * this moment." Cop-out, I know, but I'll save 2644 * running around in the process table for later. 2645 * Is there a risk of leaking information? 2646 */ 2647 ai->pid = ch->pid; 2648 2649 /* 2650 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2651 * Note, however, that a single channel operates in 2652 * only one direction, so PCM_CAP_DUPLEX is out. 2653 */ 2654 /** 2655 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2656 * these in pcmchan::caps? 2657 */ 2658 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2659 ((ch->flags & CHN_F_VIRTUAL) ? PCM_CAP_VIRTUAL : 0) | 2660 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2661 2662 /* 2663 * Collect formats supported @b natively by the 2664 * device. Also determine min/max channels. (I.e., 2665 * mono, stereo, or both?) 2666 * 2667 * If any channel is stereo, maxch = 2; 2668 * if all channels are stereo, minch = 2, too; 2669 * if any channel is mono, minch = 1; 2670 * and if all channels are mono, maxch = 1. 2671 */ 2672 minch = 0; 2673 maxch = 0; 2674 fmts = 0; 2675 for (i = 0; caps->fmtlist[i]; i++) { 2676 fmts |= caps->fmtlist[i]; 2677 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2678 minch = (minch == 0) ? 2 : minch; 2679 maxch = 2; 2680 } else { 2681 minch = 1; 2682 maxch = (maxch == 0) ? 1 : maxch; 2683 } 2684 } 2685 2686 if (ch->direction == PCMDIR_PLAY) 2687 ai->oformats = fmts; 2688 else 2689 ai->iformats = fmts; 2690 2691 /** 2692 * @note 2693 * @c magic - OSSv4 docs: "Reserved for internal use 2694 * by OSS." 2695 * 2696 * @par 2697 * @c card_number - OSSv4 docs: "Number of the sound 2698 * card where this device belongs or -1 if this 2699 * information is not available. Applications 2700 * should normally not use this field for any 2701 * purpose." 2702 */ 2703 ai->card_number = -1; 2704 /** 2705 * @todo @c song_name - depends first on 2706 * SNDCTL_[GS]ETSONG @todo @c label - depends 2707 * on SNDCTL_[GS]ETLABEL 2708 * @todo @c port_number - routing information? 2709 */ 2710 ai->port_number = -1; 2711 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2712 /** 2713 * @note 2714 * @c real_device - OSSv4 docs: "Obsolete." 2715 */ 2716 ai->real_device = -1; 2717 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2718 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2719 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2720 /** 2721 * @note 2722 * @c flags - OSSv4 docs: "Reserved for future use." 2723 * 2724 * @note 2725 * @c binding - OSSv4 docs: "Reserved for future use." 2726 * 2727 * @todo @c handle - haven't decided how to generate 2728 * this yet; bus, vendor, device IDs? 2729 */ 2730 ai->min_rate = caps->minspeed; 2731 ai->max_rate = caps->maxspeed; 2732 2733 ai->min_channels = minch; 2734 ai->max_channels = maxch; 2735 2736 ai->nrates = chn_getrates(ch, &rates); 2737 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2738 ai->nrates = OSS_MAX_SAMPLE_RATES; 2739 2740 for (i = 0; i < ai->nrates; i++) 2741 ai->rates[i] = rates[i]; 2742 2743 ai->next_play_engine = 0; 2744 ai->next_rec_engine = 0; 2745 2746 CHN_UNLOCK(ch); 2747 } 2748 2749 PCM_UNLOCK(d); 2750 2751 if (devname != NULL) 2752 return (0); 2753 } 2754 2755 /* Exhausted the search -- nothing is locked, so return. */ 2756 return (EINVAL); 2757 } 2758 2759 /** 2760 * @brief Assigns a PCM channel to a sync group. 2761 * 2762 * Sync groups are used to enable audio operations on multiple devices 2763 * simultaneously. They may be used with any number of devices and may 2764 * span across applications. Devices are added to groups with 2765 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2766 * SNDCTL_DSP_SYNCSTART ioctl. 2767 * 2768 * If the @c id field of the @c group parameter is set to zero, then a new 2769 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2770 * the group specified. 2771 * 2772 * @todo As far as memory allocation, should we assume that things are 2773 * okay and allocate with M_WAITOK before acquiring channel locks, 2774 * freeing later if not? 2775 * 2776 * @param wrch output channel associated w/ device (if any) 2777 * @param rdch input channel associated w/ device (if any) 2778 * @param group Sync group parameters 2779 * 2780 * @retval 0 success 2781 * @retval non-zero error to be propagated upstream 2782 */ 2783 static int 2784 dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2785 { 2786 struct pcmchan_syncmember *smrd, *smwr; 2787 struct pcmchan_syncgroup *sg; 2788 int ret, sg_ids[3]; 2789 2790 smrd = NULL; 2791 smwr = NULL; 2792 sg = NULL; 2793 ret = 0; 2794 2795 /* 2796 * Free_unr() may sleep, so store released syncgroup IDs until after 2797 * all locks are released. 2798 */ 2799 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2800 2801 PCM_SG_LOCK(); 2802 2803 /* 2804 * - Insert channel(s) into group's member list. 2805 * - Set CHN_F_NOTRIGGER on channel(s). 2806 * - Stop channel(s). 2807 */ 2808 2809 /* 2810 * If device's channels are already mapped to a group, unmap them. 2811 */ 2812 if (wrch) { 2813 CHN_LOCK(wrch); 2814 sg_ids[0] = chn_syncdestroy(wrch); 2815 } 2816 2817 if (rdch) { 2818 CHN_LOCK(rdch); 2819 sg_ids[1] = chn_syncdestroy(rdch); 2820 } 2821 2822 /* 2823 * Verify that mode matches character device properites. 2824 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2825 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2826 */ 2827 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2828 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2829 ret = EINVAL; 2830 goto out; 2831 } 2832 2833 /* 2834 * An id of zero indicates the user wants to create a new 2835 * syncgroup. 2836 */ 2837 if (group->id == 0) { 2838 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2839 if (sg != NULL) { 2840 SLIST_INIT(&sg->members); 2841 sg->id = alloc_unr(pcmsg_unrhdr); 2842 2843 group->id = sg->id; 2844 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2845 } else 2846 ret = ENOMEM; 2847 } else { 2848 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2849 if (sg->id == group->id) 2850 break; 2851 } 2852 if (sg == NULL) 2853 ret = EINVAL; 2854 } 2855 2856 /* Couldn't create or find a syncgroup. Fail. */ 2857 if (sg == NULL) 2858 goto out; 2859 2860 /* 2861 * Allocate a syncmember, assign it and a channel together, and 2862 * insert into syncgroup. 2863 */ 2864 if (group->mode & PCM_ENABLE_INPUT) { 2865 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2866 if (smrd == NULL) { 2867 ret = ENOMEM; 2868 goto out; 2869 } 2870 2871 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2872 smrd->parent = sg; 2873 smrd->ch = rdch; 2874 2875 chn_abort(rdch); 2876 rdch->flags |= CHN_F_NOTRIGGER; 2877 rdch->sm = smrd; 2878 } 2879 2880 if (group->mode & PCM_ENABLE_OUTPUT) { 2881 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2882 if (smwr == NULL) { 2883 ret = ENOMEM; 2884 goto out; 2885 } 2886 2887 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2888 smwr->parent = sg; 2889 smwr->ch = wrch; 2890 2891 chn_abort(wrch); 2892 wrch->flags |= CHN_F_NOTRIGGER; 2893 wrch->sm = smwr; 2894 } 2895 2896 out: 2897 if (ret != 0) { 2898 if (smrd != NULL) 2899 free(smrd, M_DEVBUF); 2900 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2901 sg_ids[2] = sg->id; 2902 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2903 free(sg, M_DEVBUF); 2904 } 2905 2906 if (wrch) 2907 wrch->sm = NULL; 2908 if (rdch) 2909 rdch->sm = NULL; 2910 } 2911 2912 if (wrch) 2913 CHN_UNLOCK(wrch); 2914 if (rdch) 2915 CHN_UNLOCK(rdch); 2916 2917 PCM_SG_UNLOCK(); 2918 2919 if (sg_ids[0]) 2920 free_unr(pcmsg_unrhdr, sg_ids[0]); 2921 if (sg_ids[1]) 2922 free_unr(pcmsg_unrhdr, sg_ids[1]); 2923 if (sg_ids[2]) 2924 free_unr(pcmsg_unrhdr, sg_ids[2]); 2925 2926 return (ret); 2927 } 2928 2929 /** 2930 * @brief Launch a sync group into action 2931 * 2932 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2933 * iterates over all members, triggering them along the way. 2934 * 2935 * @note Caller must not hold any channel locks. 2936 * 2937 * @param sg_id sync group identifier 2938 * 2939 * @retval 0 success 2940 * @retval non-zero error worthy of propagating upstream to user 2941 */ 2942 static int 2943 dsp_oss_syncstart(int sg_id) 2944 { 2945 struct pcmchan_syncmember *sm, *sm_tmp; 2946 struct pcmchan_syncgroup *sg; 2947 struct pcm_channel *c; 2948 int ret, needlocks; 2949 2950 /* Get the synclists lock */ 2951 PCM_SG_LOCK(); 2952 2953 do { 2954 ret = 0; 2955 needlocks = 0; 2956 2957 /* Search for syncgroup by ID */ 2958 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2959 if (sg->id == sg_id) 2960 break; 2961 } 2962 2963 /* Return EINVAL if not found */ 2964 if (sg == NULL) { 2965 ret = EINVAL; 2966 break; 2967 } 2968 2969 /* Any removals resulting in an empty group should've handled this */ 2970 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2971 2972 /* 2973 * Attempt to lock all member channels - if any are already 2974 * locked, unlock those acquired, sleep for a bit, and try 2975 * again. 2976 */ 2977 SLIST_FOREACH(sm, &sg->members, link) { 2978 if (CHN_TRYLOCK(sm->ch) == 0) { 2979 int timo = hz * 5/1000; 2980 if (timo < 1) 2981 timo = 1; 2982 2983 /* Release all locked channels so far, retry */ 2984 SLIST_FOREACH(sm_tmp, &sg->members, link) { 2985 /* sm is the member already locked */ 2986 if (sm == sm_tmp) 2987 break; 2988 CHN_UNLOCK(sm_tmp->ch); 2989 } 2990 2991 /** @todo Is PRIBIO correct/ */ 2992 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 2993 PRIBIO | PCATCH, "pcmsg", timo); 2994 if (ret == EINTR || ret == ERESTART) 2995 break; 2996 2997 needlocks = 1; 2998 ret = 0; /* Assumes ret == EAGAIN... */ 2999 } 3000 } 3001 } while (needlocks && ret == 0); 3002 3003 /* Proceed only if no errors encountered. */ 3004 if (ret == 0) { 3005 /* Launch channels */ 3006 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 3007 SLIST_REMOVE_HEAD(&sg->members, link); 3008 3009 c = sm->ch; 3010 c->sm = NULL; 3011 chn_start(c, 1); 3012 c->flags &= ~CHN_F_NOTRIGGER; 3013 CHN_UNLOCK(c); 3014 3015 free(sm, M_DEVBUF); 3016 } 3017 3018 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3019 free(sg, M_DEVBUF); 3020 } 3021 3022 PCM_SG_UNLOCK(); 3023 3024 /* 3025 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3026 * first. 3027 */ 3028 if (ret == 0) 3029 free_unr(pcmsg_unrhdr, sg_id); 3030 3031 return (ret); 3032 } 3033 3034 /** 3035 * @brief Handler for SNDCTL_DSP_POLICY 3036 * 3037 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3038 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3039 * specifying those two parameters, s/he simply selects a number from 0..10 3040 * which corresponds to a buffer size. Smaller numbers request smaller 3041 * buffers with lower latencies (at greater overhead from more frequent 3042 * interrupts), while greater numbers behave in the opposite manner. 3043 * 3044 * The 4Front spec states that a value of 5 should be the default. However, 3045 * this implementation deviates slightly by using a linear scale without 3046 * consulting drivers. I.e., even though drivers may have different default 3047 * buffer sizes, a policy argument of 5 will have the same result across 3048 * all drivers. 3049 * 3050 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3051 * more information. 3052 * 3053 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3054 * work with hardware drivers directly. 3055 * 3056 * @note PCM channel arguments must not be locked by caller. 3057 * 3058 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3059 * @param rdch " recording channel (optional; may be NULL) 3060 * @param policy Integer from [0:10] 3061 * 3062 * @retval 0 constant (for now) 3063 */ 3064 static int 3065 dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3066 { 3067 int ret; 3068 3069 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3070 return (EIO); 3071 3072 /* Default: success */ 3073 ret = 0; 3074 3075 if (rdch) { 3076 CHN_LOCK(rdch); 3077 ret = chn_setlatency(rdch, policy); 3078 CHN_UNLOCK(rdch); 3079 } 3080 3081 if (wrch && ret == 0) { 3082 CHN_LOCK(wrch); 3083 ret = chn_setlatency(wrch, policy); 3084 CHN_UNLOCK(wrch); 3085 } 3086 3087 if (ret) 3088 ret = EIO; 3089 3090 return (ret); 3091 } 3092 3093 /** 3094 * @brief Enable or disable "cooked" mode 3095 * 3096 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3097 * is the default, the sound system handles rate and format conversions 3098 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3099 * operates with 44100Hz/16bit/signed samples). 3100 * 3101 * Disabling cooked mode is intended for applications wanting to mmap() 3102 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3103 * feeder architecture, presumably to gain as much control over audio 3104 * hardware as possible. 3105 * 3106 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3107 * for more details. 3108 * 3109 * @param wrch playback channel (optional; may be NULL) 3110 * @param rdch recording channel (optional; may be NULL) 3111 * @param enabled 0 = raw mode, 1 = cooked mode 3112 * 3113 * @retval EINVAL Operation not yet supported. 3114 */ 3115 static int 3116 dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3117 { 3118 3119 /* 3120 * XXX I just don't get it. Why don't they call it 3121 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3122 * This is just plain so confusing, incoherent, 3123 * <insert any non-printable characters here>. 3124 */ 3125 if (!(enabled == 1 || enabled == 0)) 3126 return (EINVAL); 3127 3128 /* 3129 * I won't give in. I'm inverting its logic here and now. 3130 * Brag all you want, but "BITPERFECT" should be the better 3131 * term here. 3132 */ 3133 enabled ^= 0x00000001; 3134 3135 if (wrch != NULL) { 3136 CHN_LOCK(wrch); 3137 wrch->flags &= ~CHN_F_BITPERFECT; 3138 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3139 CHN_UNLOCK(wrch); 3140 } 3141 3142 if (rdch != NULL) { 3143 CHN_LOCK(rdch); 3144 rdch->flags &= ~CHN_F_BITPERFECT; 3145 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3146 CHN_UNLOCK(rdch); 3147 } 3148 3149 return (0); 3150 } 3151 3152 /** 3153 * @brief Retrieve channel interleaving order 3154 * 3155 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3156 * 3157 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3158 * for more details. 3159 * 3160 * @note As the ioctl definition is still under construction, FreeBSD 3161 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3162 * 3163 * @param wrch playback channel (optional; may be NULL) 3164 * @param rdch recording channel (optional; may be NULL) 3165 * @param map channel map (result will be stored there) 3166 * 3167 * @retval EINVAL Operation not yet supported. 3168 */ 3169 static int 3170 dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3171 { 3172 struct pcm_channel *ch; 3173 int ret; 3174 3175 ch = (wrch != NULL) ? wrch : rdch; 3176 if (ch != NULL) { 3177 CHN_LOCK(ch); 3178 ret = chn_oss_getorder(ch, map); 3179 CHN_UNLOCK(ch); 3180 } else 3181 ret = EINVAL; 3182 3183 return (ret); 3184 } 3185 3186 /** 3187 * @brief Specify channel interleaving order 3188 * 3189 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3190 * 3191 * @note As the ioctl definition is still under construction, FreeBSD 3192 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3193 * 3194 * @param wrch playback channel (optional; may be NULL) 3195 * @param rdch recording channel (optional; may be NULL) 3196 * @param map channel map 3197 * 3198 * @retval EINVAL Operation not yet supported. 3199 */ 3200 static int 3201 dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3202 { 3203 int ret; 3204 3205 ret = 0; 3206 3207 if (wrch != NULL) { 3208 CHN_LOCK(wrch); 3209 ret = chn_oss_setorder(wrch, map); 3210 CHN_UNLOCK(wrch); 3211 } 3212 3213 if (ret == 0 && rdch != NULL) { 3214 CHN_LOCK(rdch); 3215 ret = chn_oss_setorder(rdch, map); 3216 CHN_UNLOCK(rdch); 3217 } 3218 3219 return (ret); 3220 } 3221 3222 static int 3223 dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3224 int *mask) 3225 { 3226 struct pcm_channel *ch; 3227 uint32_t chnmask; 3228 int ret; 3229 3230 chnmask = 0; 3231 ch = (wrch != NULL) ? wrch : rdch; 3232 3233 if (ch != NULL) { 3234 CHN_LOCK(ch); 3235 ret = chn_oss_getmask(ch, &chnmask); 3236 CHN_UNLOCK(ch); 3237 } else 3238 ret = EINVAL; 3239 3240 if (ret == 0) 3241 *mask = chnmask; 3242 3243 return (ret); 3244 } 3245 3246 #ifdef OSSV4_EXPERIMENT 3247 /** 3248 * @brief Retrieve an audio device's label 3249 * 3250 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3251 * 3252 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3253 * for more details. 3254 * 3255 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3256 * consoles) can show variable "labels" for certain controls. By default 3257 * the application name (say quake) is shown as the label but 3258 * applications may change the labels themselves." 3259 * 3260 * @note As the ioctl definition is still under construction, FreeBSD 3261 * does not currently support @c SNDCTL_GETLABEL. 3262 * 3263 * @param wrch playback channel (optional; may be NULL) 3264 * @param rdch recording channel (optional; may be NULL) 3265 * @param label label gets copied here 3266 * 3267 * @retval EINVAL Operation not yet supported. 3268 */ 3269 static int 3270 dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3271 { 3272 return (EINVAL); 3273 } 3274 3275 /** 3276 * @brief Specify an audio device's label 3277 * 3278 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3279 * comments for @c dsp_oss_getlabel immediately above. 3280 * 3281 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3282 * for more details. 3283 * 3284 * @note As the ioctl definition is still under construction, FreeBSD 3285 * does not currently support SNDCTL_SETLABEL. 3286 * 3287 * @param wrch playback channel (optional; may be NULL) 3288 * @param rdch recording channel (optional; may be NULL) 3289 * @param label label gets copied from here 3290 * 3291 * @retval EINVAL Operation not yet supported. 3292 */ 3293 static int 3294 dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3295 { 3296 return (EINVAL); 3297 } 3298 3299 /** 3300 * @brief Retrieve name of currently played song 3301 * 3302 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3303 * tell the system the name of the currently playing song, which would be 3304 * visible in @c /dev/sndstat. 3305 * 3306 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3307 * for more details. 3308 * 3309 * @note As the ioctl definition is still under construction, FreeBSD 3310 * does not currently support SNDCTL_GETSONG. 3311 * 3312 * @param wrch playback channel (optional; may be NULL) 3313 * @param rdch recording channel (optional; may be NULL) 3314 * @param song song name gets copied here 3315 * 3316 * @retval EINVAL Operation not yet supported. 3317 */ 3318 static int 3319 dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3320 { 3321 return (EINVAL); 3322 } 3323 3324 /** 3325 * @brief Retrieve name of currently played song 3326 * 3327 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3328 * tell the system the name of the currently playing song, which would be 3329 * visible in @c /dev/sndstat. 3330 * 3331 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3332 * for more details. 3333 * 3334 * @note As the ioctl definition is still under construction, FreeBSD 3335 * does not currently support SNDCTL_SETSONG. 3336 * 3337 * @param wrch playback channel (optional; may be NULL) 3338 * @param rdch recording channel (optional; may be NULL) 3339 * @param song song name gets copied from here 3340 * 3341 * @retval EINVAL Operation not yet supported. 3342 */ 3343 static int 3344 dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3345 { 3346 return (EINVAL); 3347 } 3348 3349 /** 3350 * @brief Rename a device 3351 * 3352 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3353 * 3354 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3355 * more details. 3356 * 3357 * From Hannu@4Front: "This call is used to change the device name 3358 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3359 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3360 * name depending on the current context (for example 'OSS virtual wave table 3361 * synth' or 'VoIP link to London')." 3362 * 3363 * @note As the ioctl definition is still under construction, FreeBSD 3364 * does not currently support SNDCTL_SETNAME. 3365 * 3366 * @param wrch playback channel (optional; may be NULL) 3367 * @param rdch recording channel (optional; may be NULL) 3368 * @param name new device name gets copied from here 3369 * 3370 * @retval EINVAL Operation not yet supported. 3371 */ 3372 static int 3373 dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3374 { 3375 return (EINVAL); 3376 } 3377 #endif /* !OSSV4_EXPERIMENT */ 3378