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 if (rdch != NULL || wrch != NULL) 861 relchns(i_dev, rdch, wrch, prio); 862 PCM_GIANT_EXIT(d); 863 return (EBADF); 864 } 865 866 if (((*ch)->flags & (CHN_F_MMAP | CHN_F_DEAD)) || 867 (((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) { 868 relchns(i_dev, rdch, wrch, prio); 869 PCM_GIANT_EXIT(d); 870 return (EINVAL); 871 } else if (!((*ch)->flags & CHN_F_RUNNING)) { 872 (*ch)->flags |= CHN_F_RUNNING; 873 (*ch)->pid = runpid; 874 } 875 876 /* 877 * chn_read/write must give up channel lock in order to copy bytes 878 * from/to userland, so up the "in progress" counter to make sure 879 * someone else doesn't come along and muss up the buffer. 880 */ 881 ++(*ch)->inprog; 882 ret = chn_io(*ch, buf); 883 --(*ch)->inprog; 884 885 CHN_BROADCAST(&(*ch)->cv); 886 887 relchns(i_dev, rdch, wrch, prio); 888 889 PCM_GIANT_LEAVE(d); 890 891 return (ret); 892 } 893 894 static int 895 dsp_read(struct cdev *i_dev, struct uio *buf, int flag) 896 { 897 return (dsp_io_ops(i_dev, buf)); 898 } 899 900 static int 901 dsp_write(struct cdev *i_dev, struct uio *buf, int flag) 902 { 903 return (dsp_io_ops(i_dev, buf)); 904 } 905 906 static int 907 dsp_get_volume_channel(struct cdev *dev, struct pcm_channel **volch) 908 { 909 struct snddev_info *d; 910 struct pcm_channel *c; 911 int unit; 912 913 KASSERT(dev != NULL && volch != NULL, 914 ("%s(): NULL query dev=%p volch=%p", __func__, dev, volch)); 915 916 d = dsp_get_info(dev); 917 if (!PCM_REGISTERED(d)) { 918 *volch = NULL; 919 return (EINVAL); 920 } 921 922 PCM_UNLOCKASSERT(d); 923 924 *volch = NULL; 925 926 c = PCM_VOLCH(dev); 927 if (c != NULL) { 928 if (!(c->feederflags & (1 << FEEDER_VOLUME))) 929 return (-1); 930 *volch = c; 931 return (0); 932 } 933 934 PCM_LOCK(d); 935 PCM_WAIT(d); 936 PCM_ACQUIRE(d); 937 938 unit = dev2unit(dev); 939 940 CHN_FOREACH(c, d, channels.pcm) { 941 CHN_LOCK(c); 942 if (c->unit != unit) { 943 CHN_UNLOCK(c); 944 continue; 945 } 946 *volch = c; 947 pcm_chnref(c, 1); 948 PCM_VOLCH(dev) = c; 949 CHN_UNLOCK(c); 950 PCM_RELEASE(d); 951 PCM_UNLOCK(d); 952 return ((c->feederflags & (1 << FEEDER_VOLUME)) ? 0 : -1); 953 } 954 955 PCM_RELEASE(d); 956 PCM_UNLOCK(d); 957 958 return (EINVAL); 959 } 960 961 static int 962 dsp_ioctl_channel(struct cdev *dev, struct pcm_channel *volch, u_long cmd, 963 caddr_t arg) 964 { 965 struct snddev_info *d; 966 struct pcm_channel *rdch, *wrch; 967 int j, devtype, ret; 968 969 d = dsp_get_info(dev); 970 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 971 return (-1); 972 973 PCM_UNLOCKASSERT(d); 974 975 j = cmd & 0xff; 976 977 rdch = PCM_RDCH(dev); 978 wrch = PCM_WRCH(dev); 979 980 /* No specific channel, look into cache */ 981 if (volch == NULL) 982 volch = PCM_VOLCH(dev); 983 984 /* Look harder */ 985 if (volch == NULL) { 986 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 987 volch = rdch; 988 else if (j == SOUND_MIXER_PCM && wrch != NULL) 989 volch = wrch; 990 } 991 992 devtype = PCMDEV(dev); 993 994 /* Look super harder */ 995 if (volch == NULL && 996 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 997 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 998 ret = dsp_get_volume_channel(dev, &volch); 999 if (ret != 0) 1000 return (ret); 1001 if (volch == NULL) 1002 return (EINVAL); 1003 } 1004 1005 /* Final validation */ 1006 if (volch != NULL) { 1007 CHN_LOCK(volch); 1008 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 1009 CHN_UNLOCK(volch); 1010 return (-1); 1011 } 1012 if (volch->direction == PCMDIR_PLAY) 1013 wrch = volch; 1014 else 1015 rdch = volch; 1016 } 1017 1018 ret = EINVAL; 1019 1020 if (volch != NULL && 1021 ((j == SOUND_MIXER_PCM && volch->direction == PCMDIR_PLAY) || 1022 (j == SOUND_MIXER_RECLEV && volch->direction == PCMDIR_REC))) { 1023 if ((cmd & ~0xff) == MIXER_WRITE(0)) { 1024 int left, right, center; 1025 1026 left = *(int *)arg & 0x7f; 1027 right = ((*(int *)arg) >> 8) & 0x7f; 1028 center = (left + right) >> 1; 1029 chn_setvolume_multi(volch, SND_VOL_C_PCM, left, right, 1030 center); 1031 } else if ((cmd & ~0xff) == MIXER_READ(0)) { 1032 *(int *)arg = CHN_GETVOLUME(volch, 1033 SND_VOL_C_PCM, SND_CHN_T_FL); 1034 *(int *)arg |= CHN_GETVOLUME(volch, 1035 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1036 } 1037 ret = 0; 1038 } else if (rdch != NULL || wrch != NULL) { 1039 switch (j) { 1040 case SOUND_MIXER_DEVMASK: 1041 case SOUND_MIXER_CAPS: 1042 case SOUND_MIXER_STEREODEVS: 1043 if ((cmd & ~0xff) == MIXER_READ(0)) { 1044 *(int *)arg = 0; 1045 if (rdch != NULL) 1046 *(int *)arg |= SOUND_MASK_RECLEV; 1047 if (wrch != NULL) 1048 *(int *)arg |= SOUND_MASK_PCM; 1049 } 1050 ret = 0; 1051 break; 1052 case SOUND_MIXER_RECMASK: 1053 case SOUND_MIXER_RECSRC: 1054 if ((cmd & ~0xff) == MIXER_READ(0)) 1055 *(int *)arg = 0; 1056 ret = 0; 1057 break; 1058 default: 1059 break; 1060 } 1061 } 1062 1063 if (volch != NULL) 1064 CHN_UNLOCK(volch); 1065 1066 return (ret); 1067 } 1068 1069 static int 1070 dsp_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1071 struct thread *td) 1072 { 1073 struct pcm_channel *chn, *rdch, *wrch; 1074 struct snddev_info *d; 1075 u_long xcmd; 1076 int *arg_i, ret, tmp; 1077 1078 d = dsp_get_info(i_dev); 1079 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 1080 return (EBADF); 1081 1082 PCM_GIANT_ENTER(d); 1083 1084 arg_i = (int *)arg; 1085 ret = 0; 1086 xcmd = 0; 1087 chn = NULL; 1088 1089 if (IOCGROUP(cmd) == 'M') { 1090 if (cmd == OSS_GETVERSION) { 1091 *arg_i = SOUND_VERSION; 1092 PCM_GIANT_EXIT(d); 1093 return (0); 1094 } 1095 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1096 if (ret != -1) { 1097 PCM_GIANT_EXIT(d); 1098 return (ret); 1099 } 1100 1101 if (d->mixer_dev != NULL) { 1102 PCM_ACQUIRE_QUICK(d); 1103 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1104 MIXER_CMD_DIRECT); 1105 PCM_RELEASE_QUICK(d); 1106 } else 1107 ret = EBADF; 1108 1109 PCM_GIANT_EXIT(d); 1110 1111 return (ret); 1112 } 1113 1114 /* 1115 * Certain ioctls may be made on any type of device (audio, mixer, 1116 * and MIDI). Handle those special cases here. 1117 */ 1118 if (IOCGROUP(cmd) == 'X') { 1119 PCM_ACQUIRE_QUICK(d); 1120 switch(cmd) { 1121 case SNDCTL_SYSINFO: 1122 sound_oss_sysinfo((oss_sysinfo *)arg); 1123 break; 1124 case SNDCTL_CARDINFO: 1125 ret = sound_oss_card_info((oss_card_info *)arg); 1126 break; 1127 case SNDCTL_AUDIOINFO: 1128 case SNDCTL_AUDIOINFO_EX: 1129 case SNDCTL_ENGINEINFO: 1130 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1131 break; 1132 case SNDCTL_MIXERINFO: 1133 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1134 break; 1135 default: 1136 ret = EINVAL; 1137 } 1138 PCM_RELEASE_QUICK(d); 1139 PCM_GIANT_EXIT(d); 1140 return (ret); 1141 } 1142 1143 getchns(i_dev, &rdch, &wrch, 0); 1144 1145 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1146 wrch = NULL; 1147 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1148 rdch = NULL; 1149 1150 if (wrch == NULL && rdch == NULL) { 1151 PCM_GIANT_EXIT(d); 1152 return (EINVAL); 1153 } 1154 1155 switch(cmd) { 1156 #ifdef OLDPCM_IOCTL 1157 /* 1158 * we start with the new ioctl interface. 1159 */ 1160 case AIONWRITE: /* how many bytes can write ? */ 1161 if (wrch) { 1162 CHN_LOCK(wrch); 1163 /* 1164 if (wrch && wrch->bufhard.dl) 1165 while (chn_wrfeed(wrch) == 0); 1166 */ 1167 *arg_i = sndbuf_getfree(wrch->bufsoft); 1168 CHN_UNLOCK(wrch); 1169 } else { 1170 *arg_i = 0; 1171 ret = EINVAL; 1172 } 1173 break; 1174 1175 case AIOSSIZE: /* set the current blocksize */ 1176 { 1177 struct snd_size *p = (struct snd_size *)arg; 1178 1179 p->play_size = 0; 1180 p->rec_size = 0; 1181 PCM_ACQUIRE_QUICK(d); 1182 if (wrch) { 1183 CHN_LOCK(wrch); 1184 chn_setblocksize(wrch, 2, p->play_size); 1185 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1186 CHN_UNLOCK(wrch); 1187 } 1188 if (rdch) { 1189 CHN_LOCK(rdch); 1190 chn_setblocksize(rdch, 2, p->rec_size); 1191 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1192 CHN_UNLOCK(rdch); 1193 } 1194 PCM_RELEASE_QUICK(d); 1195 } 1196 break; 1197 case AIOGSIZE: /* get the current blocksize */ 1198 { 1199 struct snd_size *p = (struct snd_size *)arg; 1200 1201 if (wrch) { 1202 CHN_LOCK(wrch); 1203 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1204 CHN_UNLOCK(wrch); 1205 } 1206 if (rdch) { 1207 CHN_LOCK(rdch); 1208 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1209 CHN_UNLOCK(rdch); 1210 } 1211 } 1212 break; 1213 1214 case AIOSFMT: 1215 case AIOGFMT: 1216 { 1217 snd_chan_param *p = (snd_chan_param *)arg; 1218 1219 if (cmd == AIOSFMT && 1220 ((p->play_format != 0 && p->play_rate == 0) || 1221 (p->rec_format != 0 && p->rec_rate == 0))) { 1222 ret = EINVAL; 1223 break; 1224 } 1225 PCM_ACQUIRE_QUICK(d); 1226 if (wrch) { 1227 CHN_LOCK(wrch); 1228 if (cmd == AIOSFMT && p->play_format != 0) { 1229 chn_setformat(wrch, 1230 SND_FORMAT(p->play_format, 1231 AFMT_CHANNEL(wrch->format), 1232 AFMT_EXTCHANNEL(wrch->format))); 1233 chn_setspeed(wrch, p->play_rate); 1234 } 1235 p->play_rate = wrch->speed; 1236 p->play_format = AFMT_ENCODING(wrch->format); 1237 CHN_UNLOCK(wrch); 1238 } else { 1239 p->play_rate = 0; 1240 p->play_format = 0; 1241 } 1242 if (rdch) { 1243 CHN_LOCK(rdch); 1244 if (cmd == AIOSFMT && p->rec_format != 0) { 1245 chn_setformat(rdch, 1246 SND_FORMAT(p->rec_format, 1247 AFMT_CHANNEL(rdch->format), 1248 AFMT_EXTCHANNEL(rdch->format))); 1249 chn_setspeed(rdch, p->rec_rate); 1250 } 1251 p->rec_rate = rdch->speed; 1252 p->rec_format = AFMT_ENCODING(rdch->format); 1253 CHN_UNLOCK(rdch); 1254 } else { 1255 p->rec_rate = 0; 1256 p->rec_format = 0; 1257 } 1258 PCM_RELEASE_QUICK(d); 1259 } 1260 break; 1261 1262 case AIOGCAP: /* get capabilities */ 1263 { 1264 snd_capabilities *p = (snd_capabilities *)arg; 1265 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1266 struct cdev *pdev; 1267 1268 PCM_LOCK(d); 1269 if (rdch) { 1270 CHN_LOCK(rdch); 1271 rcaps = chn_getcaps(rdch); 1272 } 1273 if (wrch) { 1274 CHN_LOCK(wrch); 1275 pcaps = chn_getcaps(wrch); 1276 } 1277 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1278 pcaps? pcaps->minspeed : 0); 1279 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1280 pcaps? pcaps->maxspeed : 1000000); 1281 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1282 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1283 /* XXX bad on sb16 */ 1284 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1285 (wrch? chn_getformats(wrch) : 0xffffffff); 1286 if (rdch && wrch) 1287 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1288 pdev = d->mixer_dev; 1289 p->mixers = 1; /* default: one mixer */ 1290 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1291 p->left = p->right = 100; 1292 if (wrch) 1293 CHN_UNLOCK(wrch); 1294 if (rdch) 1295 CHN_UNLOCK(rdch); 1296 PCM_UNLOCK(d); 1297 } 1298 break; 1299 1300 case AIOSTOP: 1301 if (*arg_i == AIOSYNC_PLAY && wrch) { 1302 CHN_LOCK(wrch); 1303 *arg_i = chn_abort(wrch); 1304 CHN_UNLOCK(wrch); 1305 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1306 CHN_LOCK(rdch); 1307 *arg_i = chn_abort(rdch); 1308 CHN_UNLOCK(rdch); 1309 } else { 1310 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1311 *arg_i = 0; 1312 } 1313 break; 1314 1315 case AIOSYNC: 1316 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1317 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1318 break; 1319 #endif 1320 /* 1321 * here follow the standard ioctls (filio.h etc.) 1322 */ 1323 case FIONREAD: /* get # bytes to read */ 1324 if (rdch) { 1325 CHN_LOCK(rdch); 1326 /* if (rdch && rdch->bufhard.dl) 1327 while (chn_rdfeed(rdch) == 0); 1328 */ 1329 *arg_i = sndbuf_getready(rdch->bufsoft); 1330 CHN_UNLOCK(rdch); 1331 } else { 1332 *arg_i = 0; 1333 ret = EINVAL; 1334 } 1335 break; 1336 1337 case FIOASYNC: /*set/clear async i/o */ 1338 DEB( printf("FIOASYNC\n") ; ) 1339 break; 1340 1341 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1342 case FIONBIO: /* set/clear non-blocking i/o */ 1343 if (rdch) { 1344 CHN_LOCK(rdch); 1345 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1346 rdch->flags |= CHN_F_NBIO; 1347 else 1348 rdch->flags &= ~CHN_F_NBIO; 1349 CHN_UNLOCK(rdch); 1350 } 1351 if (wrch) { 1352 CHN_LOCK(wrch); 1353 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1354 wrch->flags |= CHN_F_NBIO; 1355 else 1356 wrch->flags &= ~CHN_F_NBIO; 1357 CHN_UNLOCK(wrch); 1358 } 1359 break; 1360 1361 /* 1362 * Finally, here is the linux-compatible ioctl interface 1363 */ 1364 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1365 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1366 case SNDCTL_DSP_GETBLKSIZE: 1367 chn = wrch ? wrch : rdch; 1368 if (chn) { 1369 CHN_LOCK(chn); 1370 *arg_i = sndbuf_getblksz(chn->bufsoft); 1371 CHN_UNLOCK(chn); 1372 } else { 1373 *arg_i = 0; 1374 ret = EINVAL; 1375 } 1376 break; 1377 1378 case SNDCTL_DSP_SETBLKSIZE: 1379 RANGE(*arg_i, 16, 65536); 1380 PCM_ACQUIRE_QUICK(d); 1381 if (wrch) { 1382 CHN_LOCK(wrch); 1383 chn_setblocksize(wrch, 2, *arg_i); 1384 CHN_UNLOCK(wrch); 1385 } 1386 if (rdch) { 1387 CHN_LOCK(rdch); 1388 chn_setblocksize(rdch, 2, *arg_i); 1389 CHN_UNLOCK(rdch); 1390 } 1391 PCM_RELEASE_QUICK(d); 1392 break; 1393 1394 case SNDCTL_DSP_RESET: 1395 DEB(printf("dsp reset\n")); 1396 if (wrch) { 1397 CHN_LOCK(wrch); 1398 chn_abort(wrch); 1399 chn_resetbuf(wrch); 1400 CHN_UNLOCK(wrch); 1401 } 1402 if (rdch) { 1403 CHN_LOCK(rdch); 1404 chn_abort(rdch); 1405 chn_resetbuf(rdch); 1406 CHN_UNLOCK(rdch); 1407 } 1408 break; 1409 1410 case SNDCTL_DSP_SYNC: 1411 DEB(printf("dsp sync\n")); 1412 /* chn_sync may sleep */ 1413 if (wrch) { 1414 CHN_LOCK(wrch); 1415 chn_sync(wrch, 0); 1416 CHN_UNLOCK(wrch); 1417 } 1418 break; 1419 1420 case SNDCTL_DSP_SPEED: 1421 /* chn_setspeed may sleep */ 1422 tmp = 0; 1423 PCM_ACQUIRE_QUICK(d); 1424 if (wrch) { 1425 CHN_LOCK(wrch); 1426 ret = chn_setspeed(wrch, *arg_i); 1427 tmp = wrch->speed; 1428 CHN_UNLOCK(wrch); 1429 } 1430 if (rdch && ret == 0) { 1431 CHN_LOCK(rdch); 1432 ret = chn_setspeed(rdch, *arg_i); 1433 if (tmp == 0) 1434 tmp = rdch->speed; 1435 CHN_UNLOCK(rdch); 1436 } 1437 PCM_RELEASE_QUICK(d); 1438 *arg_i = tmp; 1439 break; 1440 1441 case SOUND_PCM_READ_RATE: 1442 chn = wrch ? wrch : rdch; 1443 if (chn) { 1444 CHN_LOCK(chn); 1445 *arg_i = chn->speed; 1446 CHN_UNLOCK(chn); 1447 } else { 1448 *arg_i = 0; 1449 ret = EINVAL; 1450 } 1451 break; 1452 1453 case SNDCTL_DSP_STEREO: 1454 tmp = -1; 1455 *arg_i = (*arg_i)? 2 : 1; 1456 PCM_ACQUIRE_QUICK(d); 1457 if (wrch) { 1458 CHN_LOCK(wrch); 1459 ret = chn_setformat(wrch, 1460 SND_FORMAT(wrch->format, *arg_i, 0)); 1461 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1462 CHN_UNLOCK(wrch); 1463 } 1464 if (rdch && ret == 0) { 1465 CHN_LOCK(rdch); 1466 ret = chn_setformat(rdch, 1467 SND_FORMAT(rdch->format, *arg_i, 0)); 1468 if (tmp == -1) 1469 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1470 CHN_UNLOCK(rdch); 1471 } 1472 PCM_RELEASE_QUICK(d); 1473 *arg_i = tmp; 1474 break; 1475 1476 case SOUND_PCM_WRITE_CHANNELS: 1477 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1478 if (*arg_i < 0) { 1479 *arg_i = 0; 1480 ret = EINVAL; 1481 break; 1482 } 1483 if (*arg_i != 0) { 1484 struct pcmchan_matrix *m; 1485 uint32_t ext; 1486 1487 tmp = 0; 1488 if (*arg_i > SND_CHN_MAX) 1489 *arg_i = SND_CHN_MAX; 1490 1491 m = feeder_matrix_default_channel_map(*arg_i); 1492 if (m != NULL) 1493 ext = m->ext; 1494 else 1495 ext = 0; 1496 1497 PCM_ACQUIRE_QUICK(d); 1498 if (wrch) { 1499 CHN_LOCK(wrch); 1500 ret = chn_setformat(wrch, 1501 SND_FORMAT(wrch->format, *arg_i, ext)); 1502 tmp = AFMT_CHANNEL(wrch->format); 1503 CHN_UNLOCK(wrch); 1504 } 1505 if (rdch && ret == 0) { 1506 CHN_LOCK(rdch); 1507 ret = chn_setformat(rdch, 1508 SND_FORMAT(rdch->format, *arg_i, ext)); 1509 if (tmp == 0) 1510 tmp = AFMT_CHANNEL(rdch->format); 1511 CHN_UNLOCK(rdch); 1512 } 1513 PCM_RELEASE_QUICK(d); 1514 *arg_i = tmp; 1515 } else { 1516 chn = wrch ? wrch : rdch; 1517 CHN_LOCK(chn); 1518 *arg_i = AFMT_CHANNEL(chn->format); 1519 CHN_UNLOCK(chn); 1520 } 1521 break; 1522 1523 case SOUND_PCM_READ_CHANNELS: 1524 chn = wrch ? wrch : rdch; 1525 if (chn) { 1526 CHN_LOCK(chn); 1527 *arg_i = AFMT_CHANNEL(chn->format); 1528 CHN_UNLOCK(chn); 1529 } else { 1530 *arg_i = 0; 1531 ret = EINVAL; 1532 } 1533 break; 1534 1535 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1536 chn = wrch ? wrch : rdch; 1537 if (chn) { 1538 CHN_LOCK(chn); 1539 *arg_i = chn_getformats(chn); 1540 CHN_UNLOCK(chn); 1541 } else { 1542 *arg_i = 0; 1543 ret = EINVAL; 1544 } 1545 break; 1546 1547 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1548 if (*arg_i != AFMT_QUERY) { 1549 tmp = 0; 1550 PCM_ACQUIRE_QUICK(d); 1551 if (wrch) { 1552 CHN_LOCK(wrch); 1553 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1554 AFMT_CHANNEL(wrch->format), 1555 AFMT_EXTCHANNEL(wrch->format))); 1556 tmp = wrch->format; 1557 CHN_UNLOCK(wrch); 1558 } 1559 if (rdch && ret == 0) { 1560 CHN_LOCK(rdch); 1561 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1562 AFMT_CHANNEL(rdch->format), 1563 AFMT_EXTCHANNEL(rdch->format))); 1564 if (tmp == 0) 1565 tmp = rdch->format; 1566 CHN_UNLOCK(rdch); 1567 } 1568 PCM_RELEASE_QUICK(d); 1569 *arg_i = AFMT_ENCODING(tmp); 1570 } else { 1571 chn = wrch ? wrch : rdch; 1572 CHN_LOCK(chn); 1573 *arg_i = AFMT_ENCODING(chn->format); 1574 CHN_UNLOCK(chn); 1575 } 1576 break; 1577 1578 case SNDCTL_DSP_SETFRAGMENT: 1579 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1580 { 1581 uint32_t fragln = (*arg_i) & 0x0000ffff; 1582 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1583 uint32_t fragsz; 1584 uint32_t r_maxfrags, r_fragsz; 1585 1586 RANGE(fragln, 4, 16); 1587 fragsz = 1 << fragln; 1588 1589 if (maxfrags == 0) 1590 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1591 if (maxfrags < 2) 1592 maxfrags = 2; 1593 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1594 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1595 1596 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1597 PCM_ACQUIRE_QUICK(d); 1598 if (rdch) { 1599 CHN_LOCK(rdch); 1600 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1601 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1602 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1603 CHN_UNLOCK(rdch); 1604 } else { 1605 r_maxfrags = maxfrags; 1606 r_fragsz = fragsz; 1607 } 1608 if (wrch && ret == 0) { 1609 CHN_LOCK(wrch); 1610 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1611 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1612 fragsz = sndbuf_getblksz(wrch->bufsoft); 1613 CHN_UNLOCK(wrch); 1614 } else { /* use whatever came from the read channel */ 1615 maxfrags = r_maxfrags; 1616 fragsz = r_fragsz; 1617 } 1618 PCM_RELEASE_QUICK(d); 1619 1620 fragln = 0; 1621 while (fragsz > 1) { 1622 fragln++; 1623 fragsz >>= 1; 1624 } 1625 *arg_i = (maxfrags << 16) | fragln; 1626 } 1627 break; 1628 1629 case SNDCTL_DSP_GETISPACE: 1630 /* return the size of data available in the input queue */ 1631 { 1632 audio_buf_info *a = (audio_buf_info *)arg; 1633 if (rdch) { 1634 struct snd_dbuf *bs = rdch->bufsoft; 1635 1636 CHN_LOCK(rdch); 1637 a->bytes = sndbuf_getready(bs); 1638 a->fragments = a->bytes / sndbuf_getblksz(bs); 1639 a->fragstotal = sndbuf_getblkcnt(bs); 1640 a->fragsize = sndbuf_getblksz(bs); 1641 CHN_UNLOCK(rdch); 1642 } else 1643 ret = EINVAL; 1644 } 1645 break; 1646 1647 case SNDCTL_DSP_GETOSPACE: 1648 /* return space available in the output queue */ 1649 { 1650 audio_buf_info *a = (audio_buf_info *)arg; 1651 if (wrch) { 1652 struct snd_dbuf *bs = wrch->bufsoft; 1653 1654 CHN_LOCK(wrch); 1655 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1656 a->bytes = sndbuf_getfree(bs); 1657 a->fragments = a->bytes / sndbuf_getblksz(bs); 1658 a->fragstotal = sndbuf_getblkcnt(bs); 1659 a->fragsize = sndbuf_getblksz(bs); 1660 CHN_UNLOCK(wrch); 1661 } else 1662 ret = EINVAL; 1663 } 1664 break; 1665 1666 case SNDCTL_DSP_GETIPTR: 1667 { 1668 count_info *a = (count_info *)arg; 1669 if (rdch) { 1670 struct snd_dbuf *bs = rdch->bufsoft; 1671 1672 CHN_LOCK(rdch); 1673 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1674 a->bytes = sndbuf_gettotal(bs); 1675 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1676 a->ptr = sndbuf_getfreeptr(bs); 1677 rdch->blocks = sndbuf_getblocks(bs); 1678 CHN_UNLOCK(rdch); 1679 } else 1680 ret = EINVAL; 1681 } 1682 break; 1683 1684 case SNDCTL_DSP_GETOPTR: 1685 { 1686 count_info *a = (count_info *)arg; 1687 if (wrch) { 1688 struct snd_dbuf *bs = wrch->bufsoft; 1689 1690 CHN_LOCK(wrch); 1691 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1692 a->bytes = sndbuf_gettotal(bs); 1693 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1694 a->ptr = sndbuf_getreadyptr(bs); 1695 wrch->blocks = sndbuf_getblocks(bs); 1696 CHN_UNLOCK(wrch); 1697 } else 1698 ret = EINVAL; 1699 } 1700 break; 1701 1702 case SNDCTL_DSP_GETCAPS: 1703 PCM_LOCK(d); 1704 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1705 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1706 *arg_i |= PCM_CAP_DUPLEX; 1707 if (rdch && (rdch->flags & CHN_F_VIRTUAL) != 0) 1708 *arg_i |= PCM_CAP_VIRTUAL; 1709 if (wrch && (wrch->flags & CHN_F_VIRTUAL) != 0) 1710 *arg_i |= PCM_CAP_VIRTUAL; 1711 PCM_UNLOCK(d); 1712 break; 1713 1714 case SOUND_PCM_READ_BITS: 1715 chn = wrch ? wrch : rdch; 1716 if (chn) { 1717 CHN_LOCK(chn); 1718 if (chn->format & AFMT_8BIT) 1719 *arg_i = 8; 1720 else if (chn->format & AFMT_16BIT) 1721 *arg_i = 16; 1722 else if (chn->format & AFMT_24BIT) 1723 *arg_i = 24; 1724 else if (chn->format & AFMT_32BIT) 1725 *arg_i = 32; 1726 else 1727 ret = EINVAL; 1728 CHN_UNLOCK(chn); 1729 } else { 1730 *arg_i = 0; 1731 ret = EINVAL; 1732 } 1733 break; 1734 1735 case SNDCTL_DSP_SETTRIGGER: 1736 if (rdch) { 1737 CHN_LOCK(rdch); 1738 rdch->flags &= ~CHN_F_NOTRIGGER; 1739 if (*arg_i & PCM_ENABLE_INPUT) 1740 chn_start(rdch, 1); 1741 else { 1742 chn_abort(rdch); 1743 chn_resetbuf(rdch); 1744 rdch->flags |= CHN_F_NOTRIGGER; 1745 } 1746 CHN_UNLOCK(rdch); 1747 } 1748 if (wrch) { 1749 CHN_LOCK(wrch); 1750 wrch->flags &= ~CHN_F_NOTRIGGER; 1751 if (*arg_i & PCM_ENABLE_OUTPUT) 1752 chn_start(wrch, 1); 1753 else { 1754 chn_abort(wrch); 1755 chn_resetbuf(wrch); 1756 wrch->flags |= CHN_F_NOTRIGGER; 1757 } 1758 CHN_UNLOCK(wrch); 1759 } 1760 break; 1761 1762 case SNDCTL_DSP_GETTRIGGER: 1763 *arg_i = 0; 1764 if (wrch) { 1765 CHN_LOCK(wrch); 1766 if (wrch->flags & CHN_F_TRIGGERED) 1767 *arg_i |= PCM_ENABLE_OUTPUT; 1768 CHN_UNLOCK(wrch); 1769 } 1770 if (rdch) { 1771 CHN_LOCK(rdch); 1772 if (rdch->flags & CHN_F_TRIGGERED) 1773 *arg_i |= PCM_ENABLE_INPUT; 1774 CHN_UNLOCK(rdch); 1775 } 1776 break; 1777 1778 case SNDCTL_DSP_GETODELAY: 1779 if (wrch) { 1780 struct snd_dbuf *bs = wrch->bufsoft; 1781 1782 CHN_LOCK(wrch); 1783 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1784 *arg_i = sndbuf_getready(bs); 1785 CHN_UNLOCK(wrch); 1786 } else 1787 ret = EINVAL; 1788 break; 1789 1790 case SNDCTL_DSP_POST: 1791 if (wrch) { 1792 CHN_LOCK(wrch); 1793 wrch->flags &= ~CHN_F_NOTRIGGER; 1794 chn_start(wrch, 1); 1795 CHN_UNLOCK(wrch); 1796 } 1797 break; 1798 1799 case SNDCTL_DSP_SETDUPLEX: 1800 /* 1801 * switch to full-duplex mode if card is in half-duplex 1802 * mode and is able to work in full-duplex mode 1803 */ 1804 PCM_LOCK(d); 1805 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1806 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1807 PCM_UNLOCK(d); 1808 break; 1809 1810 /* 1811 * The following four ioctls are simple wrappers around mixer_ioctl 1812 * with no further processing. xcmd is short for "translated 1813 * command". 1814 */ 1815 case SNDCTL_DSP_GETRECVOL: 1816 if (xcmd == 0) { 1817 xcmd = SOUND_MIXER_READ_RECLEV; 1818 chn = rdch; 1819 } 1820 /* FALLTHROUGH */ 1821 case SNDCTL_DSP_SETRECVOL: 1822 if (xcmd == 0) { 1823 xcmd = SOUND_MIXER_WRITE_RECLEV; 1824 chn = rdch; 1825 } 1826 /* FALLTHROUGH */ 1827 case SNDCTL_DSP_GETPLAYVOL: 1828 if (xcmd == 0) { 1829 xcmd = SOUND_MIXER_READ_PCM; 1830 chn = wrch; 1831 } 1832 /* FALLTHROUGH */ 1833 case SNDCTL_DSP_SETPLAYVOL: 1834 if (xcmd == 0) { 1835 xcmd = SOUND_MIXER_WRITE_PCM; 1836 chn = wrch; 1837 } 1838 1839 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1840 if (ret != -1) { 1841 PCM_GIANT_EXIT(d); 1842 return (ret); 1843 } 1844 1845 if (d->mixer_dev != NULL) { 1846 PCM_ACQUIRE_QUICK(d); 1847 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1848 MIXER_CMD_DIRECT); 1849 PCM_RELEASE_QUICK(d); 1850 } else 1851 ret = ENOTSUP; 1852 1853 break; 1854 1855 case SNDCTL_DSP_GET_RECSRC_NAMES: 1856 case SNDCTL_DSP_GET_RECSRC: 1857 case SNDCTL_DSP_SET_RECSRC: 1858 if (d->mixer_dev != NULL) { 1859 PCM_ACQUIRE_QUICK(d); 1860 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1861 MIXER_CMD_DIRECT); 1862 PCM_RELEASE_QUICK(d); 1863 } else 1864 ret = ENOTSUP; 1865 break; 1866 1867 /* 1868 * The following 3 ioctls aren't very useful at the moment. For 1869 * now, only a single channel is associated with a cdev (/dev/dspN 1870 * instance), so there's only a single output routing to use (i.e., 1871 * the wrch bound to this cdev). 1872 */ 1873 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1874 { 1875 oss_mixer_enuminfo *ei; 1876 ei = (oss_mixer_enuminfo *)arg; 1877 ei->dev = 0; 1878 ei->ctrl = 0; 1879 ei->version = 0; /* static for now */ 1880 ei->strindex[0] = 0; 1881 1882 if (wrch != NULL) { 1883 ei->nvalues = 1; 1884 strlcpy(ei->strings, wrch->name, 1885 sizeof(ei->strings)); 1886 } else { 1887 ei->nvalues = 0; 1888 ei->strings[0] = '\0'; 1889 } 1890 } 1891 break; 1892 case SNDCTL_DSP_GET_PLAYTGT: 1893 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1894 /* 1895 * Re: SET_PLAYTGT 1896 * OSSv4: "The value that was accepted by the device will 1897 * be returned back in the variable pointed by the 1898 * argument." 1899 */ 1900 if (wrch != NULL) 1901 *arg_i = 0; 1902 else 1903 ret = EINVAL; 1904 break; 1905 1906 case SNDCTL_DSP_SILENCE: 1907 /* 1908 * Flush the software (pre-feed) buffer, but try to minimize playback 1909 * interruption. (I.e., record unplayed samples with intent to 1910 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1911 * functionality. 1912 */ 1913 if (wrch == NULL) 1914 ret = EINVAL; 1915 else { 1916 struct snd_dbuf *bs; 1917 CHN_LOCK(wrch); 1918 while (wrch->inprog != 0) 1919 cv_wait(&wrch->cv, wrch->lock); 1920 bs = wrch->bufsoft; 1921 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1922 bs->sl = sndbuf_getready(bs); 1923 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1924 sndbuf_fillsilence(bs); 1925 chn_start(wrch, 0); 1926 } 1927 CHN_UNLOCK(wrch); 1928 } 1929 break; 1930 1931 case SNDCTL_DSP_SKIP: 1932 /* 1933 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1934 * playback buffer by moving the current write position immediately 1935 * before the point where the device is currently reading the samples." 1936 */ 1937 if (wrch == NULL) 1938 ret = EINVAL; 1939 else { 1940 struct snd_dbuf *bs; 1941 CHN_LOCK(wrch); 1942 while (wrch->inprog != 0) 1943 cv_wait(&wrch->cv, wrch->lock); 1944 bs = wrch->bufsoft; 1945 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1946 sndbuf_softreset(bs); 1947 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1948 bs->sl = 0; 1949 chn_start(wrch, 0); 1950 } 1951 CHN_UNLOCK(wrch); 1952 } 1953 break; 1954 1955 case SNDCTL_DSP_CURRENT_OPTR: 1956 case SNDCTL_DSP_CURRENT_IPTR: 1957 /** 1958 * @note Changing formats resets the buffer counters, which differs 1959 * from the 4Front drivers. However, I don't expect this to be 1960 * much of a problem. 1961 * 1962 * @note In a test where @c CURRENT_OPTR is called immediately after write 1963 * returns, this driver is about 32K samples behind whereas 1964 * 4Front's is about 8K samples behind. Should determine source 1965 * of discrepancy, even if only out of curiosity. 1966 * 1967 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1968 */ 1969 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1970 if (chn == NULL) 1971 ret = EINVAL; 1972 else { 1973 struct snd_dbuf *bs; 1974 /* int tmp; */ 1975 1976 oss_count_t *oc = (oss_count_t *)arg; 1977 1978 CHN_LOCK(chn); 1979 bs = chn->bufsoft; 1980 #if 0 1981 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1982 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1983 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1984 #else 1985 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1986 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1987 #endif 1988 CHN_UNLOCK(chn); 1989 } 1990 break; 1991 1992 case SNDCTL_DSP_HALT_OUTPUT: 1993 case SNDCTL_DSP_HALT_INPUT: 1994 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1995 if (chn == NULL) 1996 ret = EINVAL; 1997 else { 1998 CHN_LOCK(chn); 1999 chn_abort(chn); 2000 CHN_UNLOCK(chn); 2001 } 2002 break; 2003 2004 case SNDCTL_DSP_LOW_WATER: 2005 /* 2006 * Set the number of bytes required to attract attention by 2007 * select/poll. 2008 */ 2009 if (wrch != NULL) { 2010 CHN_LOCK(wrch); 2011 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 2012 CHN_UNLOCK(wrch); 2013 } 2014 if (rdch != NULL) { 2015 CHN_LOCK(rdch); 2016 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2017 CHN_UNLOCK(rdch); 2018 } 2019 break; 2020 2021 case SNDCTL_DSP_GETERROR: 2022 /* 2023 * OSSv4 docs: "All errors and counters will automatically be 2024 * cleared to zeroes after the call so each call will return only 2025 * the errors that occurred after the previous invocation. ... The 2026 * play_underruns and rec_overrun fields are the only useful fields 2027 * returned by OSS 4.0." 2028 */ 2029 { 2030 audio_errinfo *ei = (audio_errinfo *)arg; 2031 2032 bzero((void *)ei, sizeof(*ei)); 2033 2034 if (wrch != NULL) { 2035 CHN_LOCK(wrch); 2036 ei->play_underruns = wrch->xruns; 2037 wrch->xruns = 0; 2038 CHN_UNLOCK(wrch); 2039 } 2040 if (rdch != NULL) { 2041 CHN_LOCK(rdch); 2042 ei->rec_overruns = rdch->xruns; 2043 rdch->xruns = 0; 2044 CHN_UNLOCK(rdch); 2045 } 2046 } 2047 break; 2048 2049 case SNDCTL_DSP_SYNCGROUP: 2050 PCM_ACQUIRE_QUICK(d); 2051 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2052 PCM_RELEASE_QUICK(d); 2053 break; 2054 2055 case SNDCTL_DSP_SYNCSTART: 2056 PCM_ACQUIRE_QUICK(d); 2057 ret = dsp_oss_syncstart(*arg_i); 2058 PCM_RELEASE_QUICK(d); 2059 break; 2060 2061 case SNDCTL_DSP_POLICY: 2062 PCM_ACQUIRE_QUICK(d); 2063 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2064 PCM_RELEASE_QUICK(d); 2065 break; 2066 2067 case SNDCTL_DSP_COOKEDMODE: 2068 PCM_ACQUIRE_QUICK(d); 2069 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2070 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2071 PCM_RELEASE_QUICK(d); 2072 break; 2073 case SNDCTL_DSP_GET_CHNORDER: 2074 PCM_ACQUIRE_QUICK(d); 2075 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2076 PCM_RELEASE_QUICK(d); 2077 break; 2078 case SNDCTL_DSP_SET_CHNORDER: 2079 PCM_ACQUIRE_QUICK(d); 2080 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2081 PCM_RELEASE_QUICK(d); 2082 break; 2083 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2084 PCM_ACQUIRE_QUICK(d); 2085 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2086 PCM_RELEASE_QUICK(d); 2087 break; 2088 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2089 ret = EINVAL; 2090 break; 2091 #ifdef OSSV4_EXPERIMENT 2092 /* 2093 * XXX The following ioctls are not yet supported and just return 2094 * EINVAL. 2095 */ 2096 case SNDCTL_DSP_GETOPEAKS: 2097 case SNDCTL_DSP_GETIPEAKS: 2098 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2099 if (chn == NULL) 2100 ret = EINVAL; 2101 else { 2102 oss_peaks_t *op = (oss_peaks_t *)arg; 2103 int lpeak, rpeak; 2104 2105 CHN_LOCK(chn); 2106 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2107 if (ret == -1) 2108 ret = EINVAL; 2109 else { 2110 (*op)[0] = lpeak; 2111 (*op)[1] = rpeak; 2112 } 2113 CHN_UNLOCK(chn); 2114 } 2115 break; 2116 2117 /* 2118 * XXX Once implemented, revisit this for proper cv protection 2119 * (if necessary). 2120 */ 2121 case SNDCTL_GETLABEL: 2122 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2123 break; 2124 case SNDCTL_SETLABEL: 2125 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2126 break; 2127 case SNDCTL_GETSONG: 2128 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2129 break; 2130 case SNDCTL_SETSONG: 2131 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2132 break; 2133 case SNDCTL_SETNAME: 2134 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2135 break; 2136 #if 0 2137 /** 2138 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2139 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2140 * 4Front Technologies. 2141 */ 2142 case SNDCTL_DSP_READCTL: 2143 case SNDCTL_DSP_WRITECTL: 2144 ret = EINVAL; 2145 break; 2146 #endif /* !0 (explicitly omitted ioctls) */ 2147 2148 #endif /* !OSSV4_EXPERIMENT */ 2149 case SNDCTL_DSP_MAPINBUF: 2150 case SNDCTL_DSP_MAPOUTBUF: 2151 case SNDCTL_DSP_SETSYNCRO: 2152 /* undocumented */ 2153 2154 case SNDCTL_DSP_SUBDIVIDE: 2155 case SOUND_PCM_WRITE_FILTER: 2156 case SOUND_PCM_READ_FILTER: 2157 /* dunno what these do, don't sound important */ 2158 2159 default: 2160 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2161 ret = EINVAL; 2162 break; 2163 } 2164 2165 PCM_GIANT_LEAVE(d); 2166 2167 return (ret); 2168 } 2169 2170 static int 2171 dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2172 { 2173 struct snddev_info *d; 2174 struct pcm_channel *wrch, *rdch; 2175 int ret, e; 2176 2177 d = dsp_get_info(i_dev); 2178 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) { 2179 /* XXX many clients don't understand POLLNVAL */ 2180 return (events & (POLLHUP | POLLPRI | POLLIN | 2181 POLLRDNORM | POLLOUT | POLLWRNORM)); 2182 } 2183 PCM_GIANT_ENTER(d); 2184 2185 wrch = NULL; 2186 rdch = NULL; 2187 ret = 0; 2188 2189 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2190 2191 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2192 e = (events & (POLLOUT | POLLWRNORM)); 2193 if (e) 2194 ret |= chn_poll(wrch, e, td); 2195 } 2196 2197 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2198 e = (events & (POLLIN | POLLRDNORM)); 2199 if (e) 2200 ret |= chn_poll(rdch, e, td); 2201 } 2202 2203 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2204 2205 PCM_GIANT_LEAVE(d); 2206 2207 return (ret); 2208 } 2209 2210 static int 2211 dsp_mmap(struct cdev *i_dev, vm_ooffset_t offset, vm_paddr_t *paddr, 2212 int nprot, vm_memattr_t *memattr) 2213 { 2214 2215 /* 2216 * offset is in range due to checks in dsp_mmap_single(). 2217 * XXX memattr is not honored. 2218 */ 2219 *paddr = vtophys(offset); 2220 return (0); 2221 } 2222 2223 static int 2224 dsp_mmap_single(struct cdev *i_dev, vm_ooffset_t *offset, 2225 vm_size_t size, struct vm_object **object, int nprot) 2226 { 2227 struct snddev_info *d; 2228 struct pcm_channel *wrch, *rdch, *c; 2229 2230 /* 2231 * Reject PROT_EXEC by default. It just doesn't makes sense. 2232 * Unfortunately, we have to give up this one due to linux_mmap 2233 * changes. 2234 * 2235 * https://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2236 * 2237 */ 2238 #ifdef SV_ABI_LINUX 2239 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2240 (dsp_mmap_allow_prot_exec == 0 && 2241 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2242 #else 2243 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2244 #endif 2245 return (EINVAL); 2246 2247 /* 2248 * PROT_READ (alone) selects the input buffer. 2249 * PROT_WRITE (alone) selects the output buffer. 2250 * PROT_WRITE|PROT_READ together select the output buffer. 2251 */ 2252 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2253 return (EINVAL); 2254 2255 d = dsp_get_info(i_dev); 2256 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 2257 return (EINVAL); 2258 2259 PCM_GIANT_ENTER(d); 2260 2261 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2262 2263 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2264 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2265 (*offset + size) > sndbuf_getsize(c->bufsoft) || 2266 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2267 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2268 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2269 PCM_GIANT_EXIT(d); 2270 return (EINVAL); 2271 } 2272 2273 if (wrch != NULL) 2274 wrch->flags |= CHN_F_MMAP; 2275 if (rdch != NULL) 2276 rdch->flags |= CHN_F_MMAP; 2277 2278 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2279 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2280 *object = vm_pager_allocate(OBJT_DEVICE, i_dev, 2281 size, nprot, *offset, curthread->td_ucred); 2282 2283 PCM_GIANT_LEAVE(d); 2284 2285 if (*object == NULL) 2286 return (EINVAL); 2287 return (0); 2288 } 2289 2290 /* So much for dev_stdclone() */ 2291 static int 2292 dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2293 { 2294 size_t len; 2295 2296 len = strlen(namep); 2297 if (strncmp(name, namep, len) != 0) 2298 return (ENODEV); 2299 2300 name += len; 2301 2302 if (isdigit(*name) == 0) 2303 return (ENODEV); 2304 2305 len = strlen(sep); 2306 2307 if (*name == '0' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2308 return (ENODEV); 2309 2310 for (*u = 0; isdigit(*name) != 0; name++) { 2311 *u *= 10; 2312 *u += *name - '0'; 2313 if (*u > dsp_umax) 2314 return (ENODEV); 2315 } 2316 2317 if (*name == '\0') 2318 return ((use_sep == 0) ? 0 : ENODEV); 2319 2320 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2321 return (ENODEV); 2322 2323 name += len; 2324 2325 if (*name == '0' && name[1] != '\0') 2326 return (ENODEV); 2327 2328 for (*c = 0; isdigit(*name) != 0; name++) { 2329 *c *= 10; 2330 *c += *name - '0'; 2331 if (*c > dsp_cmax) 2332 return (ENODEV); 2333 } 2334 2335 if (*name != '\0') 2336 return (ENODEV); 2337 2338 return (0); 2339 } 2340 2341 static void 2342 dsp_clone(void *arg, 2343 struct ucred *cred, 2344 char *name, int namelen, struct cdev **dev) 2345 { 2346 struct snddev_info *d; 2347 struct snd_clone_entry *ce; 2348 struct pcm_channel *c; 2349 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2350 char *devname, *devcmp, *devsep; 2351 2352 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2353 2354 if (*dev != NULL) 2355 return; 2356 2357 unit = -1; 2358 cunit = -1; 2359 devtype = -1; 2360 devhw = 0; 2361 devcmax = -1; 2362 tumax = -1; 2363 devname = NULL; 2364 devsep = NULL; 2365 2366 for (i = 0; unit == -1 && 2367 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2368 devtype = dsp_cdevs[i].type; 2369 devcmp = dsp_cdevs[i].name; 2370 devsep = dsp_cdevs[i].sep; 2371 devname = dsp_cdevs[i].alias; 2372 if (devname == NULL) 2373 devname = devcmp; 2374 devhw = dsp_cdevs[i].hw; 2375 devcmax = dsp_cdevs[i].max - 1; 2376 if (strcmp(name, devcmp) == 0) { 2377 if (dsp_basename_clone != 0) 2378 unit = snd_unit; 2379 } else if (dsp_stdclone(name, devcmp, devsep, 2380 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2381 unit = -1; 2382 cunit = -1; 2383 } 2384 } 2385 2386 d = devclass_get_softc(pcm_devclass, unit); 2387 if (!PCM_REGISTERED(d) || d->clones == NULL) 2388 return; 2389 2390 /* XXX Need Giant magic entry ??? */ 2391 2392 PCM_LOCK(d); 2393 if (snd_clone_disabled(d->clones)) { 2394 PCM_UNLOCK(d); 2395 return; 2396 } 2397 2398 PCM_WAIT(d); 2399 PCM_ACQUIRE(d); 2400 PCM_UNLOCK(d); 2401 2402 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2403 2404 if (devhw != 0) { 2405 KASSERT(devcmax <= dsp_cmax, 2406 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2407 if (cunit > devcmax) { 2408 PCM_RELEASE_QUICK(d); 2409 return; 2410 } 2411 udcmask |= snd_c2unit(cunit); 2412 CHN_FOREACH(c, d, channels.pcm) { 2413 CHN_LOCK(c); 2414 if (c->unit != udcmask) { 2415 CHN_UNLOCK(c); 2416 continue; 2417 } 2418 CHN_UNLOCK(c); 2419 udcmask &= ~snd_c2unit(cunit); 2420 /* 2421 * Temporarily increase clone maxunit to overcome 2422 * vchan flexibility. 2423 * 2424 * # sysctl dev.pcm.0.play.vchans=256 2425 * dev.pcm.0.play.vchans: 1 -> 256 2426 * # cat /dev/zero > /dev/dsp0.vp255 & 2427 * [1] 17296 2428 * # sysctl dev.pcm.0.play.vchans=0 2429 * dev.pcm.0.play.vchans: 256 -> 1 2430 * # fg 2431 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2432 * ^C 2433 * # cat /dev/zero > /dev/dsp0.vp255 2434 * zsh: operation not supported: /dev/dsp0.vp255 2435 */ 2436 tumax = snd_clone_getmaxunit(d->clones); 2437 if (cunit > tumax) 2438 snd_clone_setmaxunit(d->clones, cunit); 2439 else 2440 tumax = -1; 2441 goto dsp_clone_alloc; 2442 } 2443 /* 2444 * Ok, so we're requesting unallocated vchan, but still 2445 * within maximum vchan limit. 2446 */ 2447 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2448 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2449 cunit < snd_maxautovchans) { 2450 udcmask &= ~snd_c2unit(cunit); 2451 tumax = snd_clone_getmaxunit(d->clones); 2452 if (cunit > tumax) 2453 snd_clone_setmaxunit(d->clones, cunit); 2454 else 2455 tumax = -1; 2456 goto dsp_clone_alloc; 2457 } 2458 PCM_RELEASE_QUICK(d); 2459 return; 2460 } 2461 2462 dsp_clone_alloc: 2463 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2464 if (tumax != -1) 2465 snd_clone_setmaxunit(d->clones, tumax); 2466 if (ce != NULL) { 2467 udcmask |= snd_c2unit(cunit); 2468 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2469 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2470 devname, unit, devsep, cunit); 2471 snd_clone_register(ce, *dev); 2472 } 2473 2474 PCM_RELEASE_QUICK(d); 2475 2476 if (*dev != NULL) 2477 dev_ref(*dev); 2478 } 2479 2480 static void 2481 dsp_sysinit(void *p) 2482 { 2483 if (dsp_ehtag != NULL) 2484 return; 2485 /* initialize unit numbering */ 2486 snd_unit_init(); 2487 dsp_umax = PCMMAXUNIT; 2488 dsp_cmax = PCMMAXCHAN; 2489 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2490 } 2491 2492 static void 2493 dsp_sysuninit(void *p) 2494 { 2495 if (dsp_ehtag == NULL) 2496 return; 2497 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2498 dsp_ehtag = NULL; 2499 } 2500 2501 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2502 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2503 2504 char * 2505 dsp_unit2name(char *buf, size_t len, int unit) 2506 { 2507 int i, dtype; 2508 2509 KASSERT(buf != NULL && len != 0, 2510 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2511 2512 dtype = snd_unit2d(unit); 2513 2514 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2515 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2516 continue; 2517 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2518 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2519 return (buf); 2520 } 2521 2522 return (NULL); 2523 } 2524 2525 /** 2526 * @brief Handler for SNDCTL_AUDIOINFO. 2527 * 2528 * Gathers information about the audio device specified in ai->dev. If 2529 * ai->dev == -1, then this function gathers information about the current 2530 * device. If the call comes in on a non-audio device and ai->dev == -1, 2531 * return EINVAL. 2532 * 2533 * This routine is supposed to go practically straight to the hardware, 2534 * getting capabilities directly from the sound card driver, side-stepping 2535 * the intermediate channel interface. 2536 * 2537 * Note, however, that the usefulness of this command is significantly 2538 * decreased when requesting info about any device other than the one serving 2539 * the request. While each snddev_channel refers to a specific device node, 2540 * the converse is *not* true. Currently, when a sound device node is opened, 2541 * the sound subsystem scans for an available audio channel (or channels, if 2542 * opened in read+write) and then assigns them to the si_drv[12] private 2543 * data fields. As a result, any information returned linking a channel to 2544 * a specific character device isn't necessarily accurate. 2545 * 2546 * @note 2547 * Calling threads must not hold any snddev_info or pcm_channel locks. 2548 * 2549 * @param dev device on which the ioctl was issued 2550 * @param ai ioctl request data container 2551 * 2552 * @retval 0 success 2553 * @retval EINVAL ai->dev specifies an invalid device 2554 * 2555 * @todo Verify correctness of Doxygen tags. ;) 2556 */ 2557 int 2558 dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2559 { 2560 struct pcmchan_caps *caps; 2561 struct pcm_channel *ch; 2562 struct snddev_info *d; 2563 uint32_t fmts; 2564 int i, nchan, *rates, minch, maxch; 2565 char *devname, buf[CHN_NAMELEN]; 2566 2567 /* 2568 * If probing the device that received the ioctl, make sure it's a 2569 * DSP device. (Users may use this ioctl with /dev/mixer and 2570 * /dev/midi.) 2571 */ 2572 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2573 return (EINVAL); 2574 2575 ch = NULL; 2576 devname = NULL; 2577 nchan = 0; 2578 bzero(buf, sizeof(buf)); 2579 2580 /* 2581 * Search for the requested audio device (channel). Start by 2582 * iterating over pcm devices. 2583 */ 2584 for (i = 0; pcm_devclass != NULL && 2585 i < devclass_get_maxunit(pcm_devclass); i++) { 2586 d = devclass_get_softc(pcm_devclass, i); 2587 if (!PCM_REGISTERED(d)) 2588 continue; 2589 2590 /* XXX Need Giant magic entry ??? */ 2591 2592 /* See the note in function docblock */ 2593 PCM_UNLOCKASSERT(d); 2594 PCM_LOCK(d); 2595 2596 CHN_FOREACH(ch, d, channels.pcm) { 2597 CHN_UNLOCKASSERT(ch); 2598 CHN_LOCK(ch); 2599 if (ai->dev == -1) { 2600 if (DSP_REGISTERED(d, i_dev) && 2601 (ch == PCM_RDCH(i_dev) || /* record ch */ 2602 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2603 devname = dsp_unit2name(buf, 2604 sizeof(buf), ch->unit); 2605 } 2606 } else if (ai->dev == nchan) { 2607 devname = dsp_unit2name(buf, sizeof(buf), 2608 ch->unit); 2609 } 2610 if (devname != NULL) 2611 break; 2612 CHN_UNLOCK(ch); 2613 ++nchan; 2614 } 2615 2616 if (devname != NULL) { 2617 /* 2618 * At this point, the following synchronization stuff 2619 * has happened: 2620 * - a specific PCM device is locked. 2621 * - a specific audio channel has been locked, so be 2622 * sure to unlock when exiting; 2623 */ 2624 2625 caps = chn_getcaps(ch); 2626 2627 /* 2628 * With all handles collected, zero out the user's 2629 * container and begin filling in its fields. 2630 */ 2631 bzero((void *)ai, sizeof(oss_audioinfo)); 2632 2633 ai->dev = nchan; 2634 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2635 2636 if ((ch->flags & CHN_F_BUSY) == 0) 2637 ai->busy = 0; 2638 else 2639 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2640 2641 /** 2642 * @note 2643 * @c cmd - OSSv4 docs: "Only supported under Linux at 2644 * this moment." Cop-out, I know, but I'll save 2645 * running around in the process table for later. 2646 * Is there a risk of leaking information? 2647 */ 2648 ai->pid = ch->pid; 2649 2650 /* 2651 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2652 * Note, however, that a single channel operates in 2653 * only one direction, so PCM_CAP_DUPLEX is out. 2654 */ 2655 /** 2656 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2657 * these in pcmchan::caps? 2658 */ 2659 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2660 ((ch->flags & CHN_F_VIRTUAL) ? PCM_CAP_VIRTUAL : 0) | 2661 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2662 2663 /* 2664 * Collect formats supported @b natively by the 2665 * device. Also determine min/max channels. (I.e., 2666 * mono, stereo, or both?) 2667 * 2668 * If any channel is stereo, maxch = 2; 2669 * if all channels are stereo, minch = 2, too; 2670 * if any channel is mono, minch = 1; 2671 * and if all channels are mono, maxch = 1. 2672 */ 2673 minch = 0; 2674 maxch = 0; 2675 fmts = 0; 2676 for (i = 0; caps->fmtlist[i]; i++) { 2677 fmts |= caps->fmtlist[i]; 2678 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2679 minch = (minch == 0) ? 2 : minch; 2680 maxch = 2; 2681 } else { 2682 minch = 1; 2683 maxch = (maxch == 0) ? 1 : maxch; 2684 } 2685 } 2686 2687 if (ch->direction == PCMDIR_PLAY) 2688 ai->oformats = fmts; 2689 else 2690 ai->iformats = fmts; 2691 2692 /** 2693 * @note 2694 * @c magic - OSSv4 docs: "Reserved for internal use 2695 * by OSS." 2696 * 2697 * @par 2698 * @c card_number - OSSv4 docs: "Number of the sound 2699 * card where this device belongs or -1 if this 2700 * information is not available. Applications 2701 * should normally not use this field for any 2702 * purpose." 2703 */ 2704 ai->card_number = -1; 2705 /** 2706 * @todo @c song_name - depends first on 2707 * SNDCTL_[GS]ETSONG @todo @c label - depends 2708 * on SNDCTL_[GS]ETLABEL 2709 * @todo @c port_number - routing information? 2710 */ 2711 ai->port_number = -1; 2712 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2713 /** 2714 * @note 2715 * @c real_device - OSSv4 docs: "Obsolete." 2716 */ 2717 ai->real_device = -1; 2718 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2719 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2720 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2721 /** 2722 * @note 2723 * @c flags - OSSv4 docs: "Reserved for future use." 2724 * 2725 * @note 2726 * @c binding - OSSv4 docs: "Reserved for future use." 2727 * 2728 * @todo @c handle - haven't decided how to generate 2729 * this yet; bus, vendor, device IDs? 2730 */ 2731 ai->min_rate = caps->minspeed; 2732 ai->max_rate = caps->maxspeed; 2733 2734 ai->min_channels = minch; 2735 ai->max_channels = maxch; 2736 2737 ai->nrates = chn_getrates(ch, &rates); 2738 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2739 ai->nrates = OSS_MAX_SAMPLE_RATES; 2740 2741 for (i = 0; i < ai->nrates; i++) 2742 ai->rates[i] = rates[i]; 2743 2744 ai->next_play_engine = 0; 2745 ai->next_rec_engine = 0; 2746 2747 CHN_UNLOCK(ch); 2748 } 2749 2750 PCM_UNLOCK(d); 2751 2752 if (devname != NULL) 2753 return (0); 2754 } 2755 2756 /* Exhausted the search -- nothing is locked, so return. */ 2757 return (EINVAL); 2758 } 2759 2760 /** 2761 * @brief Assigns a PCM channel to a sync group. 2762 * 2763 * Sync groups are used to enable audio operations on multiple devices 2764 * simultaneously. They may be used with any number of devices and may 2765 * span across applications. Devices are added to groups with 2766 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2767 * SNDCTL_DSP_SYNCSTART ioctl. 2768 * 2769 * If the @c id field of the @c group parameter is set to zero, then a new 2770 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2771 * the group specified. 2772 * 2773 * @todo As far as memory allocation, should we assume that things are 2774 * okay and allocate with M_WAITOK before acquiring channel locks, 2775 * freeing later if not? 2776 * 2777 * @param wrch output channel associated w/ device (if any) 2778 * @param rdch input channel associated w/ device (if any) 2779 * @param group Sync group parameters 2780 * 2781 * @retval 0 success 2782 * @retval non-zero error to be propagated upstream 2783 */ 2784 static int 2785 dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2786 { 2787 struct pcmchan_syncmember *smrd, *smwr; 2788 struct pcmchan_syncgroup *sg; 2789 int ret, sg_ids[3]; 2790 2791 smrd = NULL; 2792 smwr = NULL; 2793 sg = NULL; 2794 ret = 0; 2795 2796 /* 2797 * Free_unr() may sleep, so store released syncgroup IDs until after 2798 * all locks are released. 2799 */ 2800 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2801 2802 PCM_SG_LOCK(); 2803 2804 /* 2805 * - Insert channel(s) into group's member list. 2806 * - Set CHN_F_NOTRIGGER on channel(s). 2807 * - Stop channel(s). 2808 */ 2809 2810 /* 2811 * If device's channels are already mapped to a group, unmap them. 2812 */ 2813 if (wrch) { 2814 CHN_LOCK(wrch); 2815 sg_ids[0] = chn_syncdestroy(wrch); 2816 } 2817 2818 if (rdch) { 2819 CHN_LOCK(rdch); 2820 sg_ids[1] = chn_syncdestroy(rdch); 2821 } 2822 2823 /* 2824 * Verify that mode matches character device properites. 2825 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2826 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2827 */ 2828 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2829 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2830 ret = EINVAL; 2831 goto out; 2832 } 2833 2834 /* 2835 * An id of zero indicates the user wants to create a new 2836 * syncgroup. 2837 */ 2838 if (group->id == 0) { 2839 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2840 if (sg != NULL) { 2841 SLIST_INIT(&sg->members); 2842 sg->id = alloc_unr(pcmsg_unrhdr); 2843 2844 group->id = sg->id; 2845 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2846 } else 2847 ret = ENOMEM; 2848 } else { 2849 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2850 if (sg->id == group->id) 2851 break; 2852 } 2853 if (sg == NULL) 2854 ret = EINVAL; 2855 } 2856 2857 /* Couldn't create or find a syncgroup. Fail. */ 2858 if (sg == NULL) 2859 goto out; 2860 2861 /* 2862 * Allocate a syncmember, assign it and a channel together, and 2863 * insert into syncgroup. 2864 */ 2865 if (group->mode & PCM_ENABLE_INPUT) { 2866 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2867 if (smrd == NULL) { 2868 ret = ENOMEM; 2869 goto out; 2870 } 2871 2872 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2873 smrd->parent = sg; 2874 smrd->ch = rdch; 2875 2876 chn_abort(rdch); 2877 rdch->flags |= CHN_F_NOTRIGGER; 2878 rdch->sm = smrd; 2879 } 2880 2881 if (group->mode & PCM_ENABLE_OUTPUT) { 2882 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2883 if (smwr == NULL) { 2884 ret = ENOMEM; 2885 goto out; 2886 } 2887 2888 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2889 smwr->parent = sg; 2890 smwr->ch = wrch; 2891 2892 chn_abort(wrch); 2893 wrch->flags |= CHN_F_NOTRIGGER; 2894 wrch->sm = smwr; 2895 } 2896 2897 out: 2898 if (ret != 0) { 2899 if (smrd != NULL) 2900 free(smrd, M_DEVBUF); 2901 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2902 sg_ids[2] = sg->id; 2903 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2904 free(sg, M_DEVBUF); 2905 } 2906 2907 if (wrch) 2908 wrch->sm = NULL; 2909 if (rdch) 2910 rdch->sm = NULL; 2911 } 2912 2913 if (wrch) 2914 CHN_UNLOCK(wrch); 2915 if (rdch) 2916 CHN_UNLOCK(rdch); 2917 2918 PCM_SG_UNLOCK(); 2919 2920 if (sg_ids[0]) 2921 free_unr(pcmsg_unrhdr, sg_ids[0]); 2922 if (sg_ids[1]) 2923 free_unr(pcmsg_unrhdr, sg_ids[1]); 2924 if (sg_ids[2]) 2925 free_unr(pcmsg_unrhdr, sg_ids[2]); 2926 2927 return (ret); 2928 } 2929 2930 /** 2931 * @brief Launch a sync group into action 2932 * 2933 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2934 * iterates over all members, triggering them along the way. 2935 * 2936 * @note Caller must not hold any channel locks. 2937 * 2938 * @param sg_id sync group identifier 2939 * 2940 * @retval 0 success 2941 * @retval non-zero error worthy of propagating upstream to user 2942 */ 2943 static int 2944 dsp_oss_syncstart(int sg_id) 2945 { 2946 struct pcmchan_syncmember *sm, *sm_tmp; 2947 struct pcmchan_syncgroup *sg; 2948 struct pcm_channel *c; 2949 int ret, needlocks; 2950 2951 /* Get the synclists lock */ 2952 PCM_SG_LOCK(); 2953 2954 do { 2955 ret = 0; 2956 needlocks = 0; 2957 2958 /* Search for syncgroup by ID */ 2959 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2960 if (sg->id == sg_id) 2961 break; 2962 } 2963 2964 /* Return EINVAL if not found */ 2965 if (sg == NULL) { 2966 ret = EINVAL; 2967 break; 2968 } 2969 2970 /* Any removals resulting in an empty group should've handled this */ 2971 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2972 2973 /* 2974 * Attempt to lock all member channels - if any are already 2975 * locked, unlock those acquired, sleep for a bit, and try 2976 * again. 2977 */ 2978 SLIST_FOREACH(sm, &sg->members, link) { 2979 if (CHN_TRYLOCK(sm->ch) == 0) { 2980 int timo = hz * 5/1000; 2981 if (timo < 1) 2982 timo = 1; 2983 2984 /* Release all locked channels so far, retry */ 2985 SLIST_FOREACH(sm_tmp, &sg->members, link) { 2986 /* sm is the member already locked */ 2987 if (sm == sm_tmp) 2988 break; 2989 CHN_UNLOCK(sm_tmp->ch); 2990 } 2991 2992 /** @todo Is PRIBIO correct/ */ 2993 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 2994 PRIBIO | PCATCH, "pcmsg", timo); 2995 if (ret == EINTR || ret == ERESTART) 2996 break; 2997 2998 needlocks = 1; 2999 ret = 0; /* Assumes ret == EAGAIN... */ 3000 } 3001 } 3002 } while (needlocks && ret == 0); 3003 3004 /* Proceed only if no errors encountered. */ 3005 if (ret == 0) { 3006 /* Launch channels */ 3007 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 3008 SLIST_REMOVE_HEAD(&sg->members, link); 3009 3010 c = sm->ch; 3011 c->sm = NULL; 3012 chn_start(c, 1); 3013 c->flags &= ~CHN_F_NOTRIGGER; 3014 CHN_UNLOCK(c); 3015 3016 free(sm, M_DEVBUF); 3017 } 3018 3019 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3020 free(sg, M_DEVBUF); 3021 } 3022 3023 PCM_SG_UNLOCK(); 3024 3025 /* 3026 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3027 * first. 3028 */ 3029 if (ret == 0) 3030 free_unr(pcmsg_unrhdr, sg_id); 3031 3032 return (ret); 3033 } 3034 3035 /** 3036 * @brief Handler for SNDCTL_DSP_POLICY 3037 * 3038 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3039 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3040 * specifying those two parameters, s/he simply selects a number from 0..10 3041 * which corresponds to a buffer size. Smaller numbers request smaller 3042 * buffers with lower latencies (at greater overhead from more frequent 3043 * interrupts), while greater numbers behave in the opposite manner. 3044 * 3045 * The 4Front spec states that a value of 5 should be the default. However, 3046 * this implementation deviates slightly by using a linear scale without 3047 * consulting drivers. I.e., even though drivers may have different default 3048 * buffer sizes, a policy argument of 5 will have the same result across 3049 * all drivers. 3050 * 3051 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3052 * more information. 3053 * 3054 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3055 * work with hardware drivers directly. 3056 * 3057 * @note PCM channel arguments must not be locked by caller. 3058 * 3059 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3060 * @param rdch " recording channel (optional; may be NULL) 3061 * @param policy Integer from [0:10] 3062 * 3063 * @retval 0 constant (for now) 3064 */ 3065 static int 3066 dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3067 { 3068 int ret; 3069 3070 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3071 return (EIO); 3072 3073 /* Default: success */ 3074 ret = 0; 3075 3076 if (rdch) { 3077 CHN_LOCK(rdch); 3078 ret = chn_setlatency(rdch, policy); 3079 CHN_UNLOCK(rdch); 3080 } 3081 3082 if (wrch && ret == 0) { 3083 CHN_LOCK(wrch); 3084 ret = chn_setlatency(wrch, policy); 3085 CHN_UNLOCK(wrch); 3086 } 3087 3088 if (ret) 3089 ret = EIO; 3090 3091 return (ret); 3092 } 3093 3094 /** 3095 * @brief Enable or disable "cooked" mode 3096 * 3097 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3098 * is the default, the sound system handles rate and format conversions 3099 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3100 * operates with 44100Hz/16bit/signed samples). 3101 * 3102 * Disabling cooked mode is intended for applications wanting to mmap() 3103 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3104 * feeder architecture, presumably to gain as much control over audio 3105 * hardware as possible. 3106 * 3107 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3108 * for more details. 3109 * 3110 * @param wrch playback channel (optional; may be NULL) 3111 * @param rdch recording channel (optional; may be NULL) 3112 * @param enabled 0 = raw mode, 1 = cooked mode 3113 * 3114 * @retval EINVAL Operation not yet supported. 3115 */ 3116 static int 3117 dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3118 { 3119 3120 /* 3121 * XXX I just don't get it. Why don't they call it 3122 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3123 * This is just plain so confusing, incoherent, 3124 * <insert any non-printable characters here>. 3125 */ 3126 if (!(enabled == 1 || enabled == 0)) 3127 return (EINVAL); 3128 3129 /* 3130 * I won't give in. I'm inverting its logic here and now. 3131 * Brag all you want, but "BITPERFECT" should be the better 3132 * term here. 3133 */ 3134 enabled ^= 0x00000001; 3135 3136 if (wrch != NULL) { 3137 CHN_LOCK(wrch); 3138 wrch->flags &= ~CHN_F_BITPERFECT; 3139 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3140 CHN_UNLOCK(wrch); 3141 } 3142 3143 if (rdch != NULL) { 3144 CHN_LOCK(rdch); 3145 rdch->flags &= ~CHN_F_BITPERFECT; 3146 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3147 CHN_UNLOCK(rdch); 3148 } 3149 3150 return (0); 3151 } 3152 3153 /** 3154 * @brief Retrieve channel interleaving order 3155 * 3156 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3157 * 3158 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3159 * for more details. 3160 * 3161 * @note As the ioctl definition is still under construction, FreeBSD 3162 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3163 * 3164 * @param wrch playback channel (optional; may be NULL) 3165 * @param rdch recording channel (optional; may be NULL) 3166 * @param map channel map (result will be stored there) 3167 * 3168 * @retval EINVAL Operation not yet supported. 3169 */ 3170 static int 3171 dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3172 { 3173 struct pcm_channel *ch; 3174 int ret; 3175 3176 ch = (wrch != NULL) ? wrch : rdch; 3177 if (ch != NULL) { 3178 CHN_LOCK(ch); 3179 ret = chn_oss_getorder(ch, map); 3180 CHN_UNLOCK(ch); 3181 } else 3182 ret = EINVAL; 3183 3184 return (ret); 3185 } 3186 3187 /** 3188 * @brief Specify channel interleaving order 3189 * 3190 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3191 * 3192 * @note As the ioctl definition is still under construction, FreeBSD 3193 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3194 * 3195 * @param wrch playback channel (optional; may be NULL) 3196 * @param rdch recording channel (optional; may be NULL) 3197 * @param map channel map 3198 * 3199 * @retval EINVAL Operation not yet supported. 3200 */ 3201 static int 3202 dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3203 { 3204 int ret; 3205 3206 ret = 0; 3207 3208 if (wrch != NULL) { 3209 CHN_LOCK(wrch); 3210 ret = chn_oss_setorder(wrch, map); 3211 CHN_UNLOCK(wrch); 3212 } 3213 3214 if (ret == 0 && rdch != NULL) { 3215 CHN_LOCK(rdch); 3216 ret = chn_oss_setorder(rdch, map); 3217 CHN_UNLOCK(rdch); 3218 } 3219 3220 return (ret); 3221 } 3222 3223 static int 3224 dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3225 int *mask) 3226 { 3227 struct pcm_channel *ch; 3228 uint32_t chnmask; 3229 int ret; 3230 3231 chnmask = 0; 3232 ch = (wrch != NULL) ? wrch : rdch; 3233 3234 if (ch != NULL) { 3235 CHN_LOCK(ch); 3236 ret = chn_oss_getmask(ch, &chnmask); 3237 CHN_UNLOCK(ch); 3238 } else 3239 ret = EINVAL; 3240 3241 if (ret == 0) 3242 *mask = chnmask; 3243 3244 return (ret); 3245 } 3246 3247 #ifdef OSSV4_EXPERIMENT 3248 /** 3249 * @brief Retrieve an audio device's label 3250 * 3251 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3252 * 3253 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3254 * for more details. 3255 * 3256 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3257 * consoles) can show variable "labels" for certain controls. By default 3258 * the application name (say quake) is shown as the label but 3259 * applications may change the labels themselves." 3260 * 3261 * @note As the ioctl definition is still under construction, FreeBSD 3262 * does not currently support @c SNDCTL_GETLABEL. 3263 * 3264 * @param wrch playback channel (optional; may be NULL) 3265 * @param rdch recording channel (optional; may be NULL) 3266 * @param label label gets copied here 3267 * 3268 * @retval EINVAL Operation not yet supported. 3269 */ 3270 static int 3271 dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3272 { 3273 return (EINVAL); 3274 } 3275 3276 /** 3277 * @brief Specify an audio device's label 3278 * 3279 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3280 * comments for @c dsp_oss_getlabel immediately above. 3281 * 3282 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3283 * for more details. 3284 * 3285 * @note As the ioctl definition is still under construction, FreeBSD 3286 * does not currently support SNDCTL_SETLABEL. 3287 * 3288 * @param wrch playback channel (optional; may be NULL) 3289 * @param rdch recording channel (optional; may be NULL) 3290 * @param label label gets copied from here 3291 * 3292 * @retval EINVAL Operation not yet supported. 3293 */ 3294 static int 3295 dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3296 { 3297 return (EINVAL); 3298 } 3299 3300 /** 3301 * @brief Retrieve name of currently played song 3302 * 3303 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3304 * tell the system the name of the currently playing song, which would be 3305 * visible in @c /dev/sndstat. 3306 * 3307 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3308 * for more details. 3309 * 3310 * @note As the ioctl definition is still under construction, FreeBSD 3311 * does not currently support SNDCTL_GETSONG. 3312 * 3313 * @param wrch playback channel (optional; may be NULL) 3314 * @param rdch recording channel (optional; may be NULL) 3315 * @param song song name gets copied here 3316 * 3317 * @retval EINVAL Operation not yet supported. 3318 */ 3319 static int 3320 dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3321 { 3322 return (EINVAL); 3323 } 3324 3325 /** 3326 * @brief Retrieve name of currently played song 3327 * 3328 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3329 * tell the system the name of the currently playing song, which would be 3330 * visible in @c /dev/sndstat. 3331 * 3332 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3333 * for more details. 3334 * 3335 * @note As the ioctl definition is still under construction, FreeBSD 3336 * does not currently support SNDCTL_SETSONG. 3337 * 3338 * @param wrch playback channel (optional; may be NULL) 3339 * @param rdch recording channel (optional; may be NULL) 3340 * @param song song name gets copied from here 3341 * 3342 * @retval EINVAL Operation not yet supported. 3343 */ 3344 static int 3345 dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3346 { 3347 return (EINVAL); 3348 } 3349 3350 /** 3351 * @brief Rename a device 3352 * 3353 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3354 * 3355 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3356 * more details. 3357 * 3358 * From Hannu@4Front: "This call is used to change the device name 3359 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3360 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3361 * name depending on the current context (for example 'OSS virtual wave table 3362 * synth' or 'VoIP link to London')." 3363 * 3364 * @note As the ioctl definition is still under construction, FreeBSD 3365 * does not currently support SNDCTL_SETNAME. 3366 * 3367 * @param wrch playback channel (optional; may be NULL) 3368 * @param rdch recording channel (optional; may be NULL) 3369 * @param name new device name gets copied from here 3370 * 3371 * @retval EINVAL Operation not yet supported. 3372 */ 3373 static int 3374 dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3375 { 3376 return (EINVAL); 3377 } 3378 #endif /* !OSSV4_EXPERIMENT */ 3379