1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 static int dsp_mmap_allow_prot_exec = 0; 47 SYSCTL_INT(_hw_snd, OID_AUTO, compat_linux_mmap, CTLFLAG_RWTUN, 48 &dsp_mmap_allow_prot_exec, 0, 49 "linux mmap compatibility (-1=force disable 0=auto 1=force enable)"); 50 51 static int dsp_basename_clone = 1; 52 SYSCTL_INT(_hw_snd, OID_AUTO, basename_clone, CTLFLAG_RWTUN, 53 &dsp_basename_clone, 0, 54 "DSP basename cloning (0: Disable; 1: Enabled)"); 55 56 struct dsp_cdevinfo { 57 struct pcm_channel *rdch, *wrch; 58 struct pcm_channel *volch; 59 int busy, simplex; 60 TAILQ_ENTRY(dsp_cdevinfo) link; 61 }; 62 63 #define PCM_RDCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->rdch) 64 #define PCM_WRCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->wrch) 65 #define PCM_VOLCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->volch) 66 #define PCM_SIMPLEX(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->simplex) 67 68 #define DSP_CDEVINFO_CACHESIZE 8 69 70 #define DSP_REGISTERED(x, y) (PCM_REGISTERED(x) && \ 71 (y) != NULL && (y)->si_drv1 != NULL) 72 73 #define OLDPCM_IOCTL 74 75 static d_open_t dsp_open; 76 static d_close_t dsp_close; 77 static d_read_t dsp_read; 78 static d_write_t dsp_write; 79 static d_ioctl_t dsp_ioctl; 80 static d_poll_t dsp_poll; 81 static d_mmap_t dsp_mmap; 82 static d_mmap_single_t dsp_mmap_single; 83 84 struct cdevsw dsp_cdevsw = { 85 .d_version = D_VERSION, 86 .d_open = dsp_open, 87 .d_close = dsp_close, 88 .d_read = dsp_read, 89 .d_write = dsp_write, 90 .d_ioctl = dsp_ioctl, 91 .d_poll = dsp_poll, 92 .d_mmap = dsp_mmap, 93 .d_mmap_single = dsp_mmap_single, 94 .d_name = "dsp", 95 }; 96 97 static eventhandler_tag dsp_ehtag = NULL; 98 static int dsp_umax = -1; 99 static int dsp_cmax = -1; 100 101 static int dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group); 102 static int dsp_oss_syncstart(int sg_id); 103 static int dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy); 104 static int dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled); 105 static int dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 106 static int dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 107 static int dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, int *mask); 108 #ifdef OSSV4_EXPERIMENT 109 static int dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 110 static int dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 111 static int dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 112 static int dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 113 static int dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name); 114 #endif 115 116 static struct snddev_info * 117 dsp_get_info(struct cdev *dev) 118 { 119 return (devclass_get_softc(pcm_devclass, PCMUNIT(dev))); 120 } 121 122 static uint32_t 123 dsp_get_flags(struct cdev *dev) 124 { 125 device_t bdev; 126 127 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 128 129 return ((bdev != NULL) ? pcm_getflags(bdev) : 0xffffffff); 130 } 131 132 static void 133 dsp_set_flags(struct cdev *dev, uint32_t flags) 134 { 135 device_t bdev; 136 137 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 138 139 if (bdev != NULL) 140 pcm_setflags(bdev, flags); 141 } 142 143 /* 144 * return the channels associated with an open device instance. 145 * lock channels specified. 146 */ 147 static int 148 getchns(struct cdev *dev, struct pcm_channel **rdch, struct pcm_channel **wrch, 149 uint32_t prio) 150 { 151 struct snddev_info *d; 152 struct pcm_channel *ch; 153 uint32_t flags; 154 155 if (PCM_SIMPLEX(dev) != 0) { 156 d = dsp_get_info(dev); 157 if (!PCM_REGISTERED(d)) 158 return (ENXIO); 159 PCM_LOCK(d); 160 PCM_WAIT(d); 161 PCM_ACQUIRE(d); 162 /* 163 * Note: order is important - 164 * pcm flags -> prio query flags -> wild guess 165 */ 166 ch = NULL; 167 flags = dsp_get_flags(dev); 168 if (flags & SD_F_PRIO_WR) { 169 ch = PCM_RDCH(dev); 170 PCM_RDCH(dev) = NULL; 171 } else if (flags & SD_F_PRIO_RD) { 172 ch = PCM_WRCH(dev); 173 PCM_WRCH(dev) = NULL; 174 } else if (prio & SD_F_PRIO_WR) { 175 ch = PCM_RDCH(dev); 176 PCM_RDCH(dev) = NULL; 177 flags |= SD_F_PRIO_WR; 178 } else if (prio & SD_F_PRIO_RD) { 179 ch = PCM_WRCH(dev); 180 PCM_WRCH(dev) = NULL; 181 flags |= SD_F_PRIO_RD; 182 } else if (PCM_WRCH(dev) != NULL) { 183 ch = PCM_RDCH(dev); 184 PCM_RDCH(dev) = NULL; 185 flags |= SD_F_PRIO_WR; 186 } else if (PCM_RDCH(dev) != NULL) { 187 ch = PCM_WRCH(dev); 188 PCM_WRCH(dev) = NULL; 189 flags |= SD_F_PRIO_RD; 190 } 191 PCM_SIMPLEX(dev) = 0; 192 dsp_set_flags(dev, flags); 193 if (ch != NULL) { 194 CHN_LOCK(ch); 195 pcm_chnref(ch, -1); 196 pcm_chnrelease(ch); 197 } 198 PCM_RELEASE(d); 199 PCM_UNLOCK(d); 200 } 201 202 *rdch = PCM_RDCH(dev); 203 *wrch = PCM_WRCH(dev); 204 205 if (*rdch != NULL && (prio & SD_F_PRIO_RD)) 206 CHN_LOCK(*rdch); 207 if (*wrch != NULL && (prio & SD_F_PRIO_WR)) 208 CHN_LOCK(*wrch); 209 210 return (0); 211 } 212 213 /* unlock specified channels */ 214 static void 215 relchns(struct cdev *dev, struct pcm_channel *rdch, struct pcm_channel *wrch, 216 uint32_t prio) 217 { 218 if (wrch != NULL && (prio & SD_F_PRIO_WR)) 219 CHN_UNLOCK(wrch); 220 if (rdch != NULL && (prio & SD_F_PRIO_RD)) 221 CHN_UNLOCK(rdch); 222 } 223 224 static void 225 dsp_cdevinfo_alloc(struct cdev *dev, 226 struct pcm_channel *rdch, struct pcm_channel *wrch, 227 struct pcm_channel *volch) 228 { 229 struct snddev_info *d; 230 struct dsp_cdevinfo *cdi; 231 int simplex; 232 233 d = dsp_get_info(dev); 234 235 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 == NULL && 236 ((rdch == NULL && wrch == NULL) || rdch != wrch), 237 ("bogus %s(), what are you trying to accomplish here?", __func__)); 238 PCM_BUSYASSERT(d); 239 PCM_LOCKASSERT(d); 240 241 simplex = (dsp_get_flags(dev) & SD_F_SIMPLEX) ? 1 : 0; 242 243 /* 244 * Scan for free instance entry and put it into the end of list. 245 * Create new one if necessary. 246 */ 247 TAILQ_FOREACH(cdi, &d->dsp_cdevinfo_pool, link) { 248 if (cdi->busy != 0) 249 break; 250 cdi->rdch = rdch; 251 cdi->wrch = wrch; 252 cdi->volch = volch; 253 cdi->simplex = simplex; 254 cdi->busy = 1; 255 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 256 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 257 dev->si_drv1 = cdi; 258 return; 259 } 260 PCM_UNLOCK(d); 261 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 262 PCM_LOCK(d); 263 cdi->rdch = rdch; 264 cdi->wrch = wrch; 265 cdi->volch = volch; 266 cdi->simplex = simplex; 267 cdi->busy = 1; 268 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 269 dev->si_drv1 = cdi; 270 } 271 272 static void 273 dsp_cdevinfo_free(struct cdev *dev) 274 { 275 struct snddev_info *d; 276 struct dsp_cdevinfo *cdi, *tmp; 277 uint32_t flags; 278 int i; 279 280 d = dsp_get_info(dev); 281 282 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 != NULL && 283 PCM_RDCH(dev) == NULL && PCM_WRCH(dev) == NULL && 284 PCM_VOLCH(dev) == NULL, 285 ("bogus %s(), what are you trying to accomplish here?", __func__)); 286 PCM_BUSYASSERT(d); 287 PCM_LOCKASSERT(d); 288 289 cdi = dev->si_drv1; 290 dev->si_drv1 = NULL; 291 cdi->rdch = NULL; 292 cdi->wrch = NULL; 293 cdi->volch = NULL; 294 cdi->simplex = 0; 295 cdi->busy = 0; 296 297 /* 298 * Once it is free, move it back to the beginning of list for 299 * faster new entry allocation. 300 */ 301 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 302 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 303 304 /* 305 * Scan the list, cache free entries up to DSP_CDEVINFO_CACHESIZE. 306 * Reset simplex flags. 307 */ 308 flags = dsp_get_flags(dev) & ~SD_F_PRIO_SET; 309 i = DSP_CDEVINFO_CACHESIZE; 310 TAILQ_FOREACH_SAFE(cdi, &d->dsp_cdevinfo_pool, link, tmp) { 311 if (cdi->busy != 0) { 312 if (cdi->simplex == 0) { 313 if (cdi->rdch != NULL) 314 flags |= SD_F_PRIO_RD; 315 if (cdi->wrch != NULL) 316 flags |= SD_F_PRIO_WR; 317 } 318 } else { 319 if (i == 0) { 320 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 321 free(cdi, M_DEVBUF); 322 } else 323 i--; 324 } 325 } 326 dsp_set_flags(dev, flags); 327 } 328 329 void 330 dsp_cdevinfo_init(struct snddev_info *d) 331 { 332 struct dsp_cdevinfo *cdi; 333 int i; 334 335 KASSERT(d != NULL, ("NULL snddev_info")); 336 PCM_BUSYASSERT(d); 337 PCM_UNLOCKASSERT(d); 338 339 TAILQ_INIT(&d->dsp_cdevinfo_pool); 340 for (i = 0; i < DSP_CDEVINFO_CACHESIZE; i++) { 341 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 342 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 343 } 344 } 345 346 void 347 dsp_cdevinfo_flush(struct snddev_info *d) 348 { 349 struct dsp_cdevinfo *cdi, *tmp; 350 351 KASSERT(d != NULL, ("NULL snddev_info")); 352 PCM_BUSYASSERT(d); 353 PCM_UNLOCKASSERT(d); 354 355 cdi = TAILQ_FIRST(&d->dsp_cdevinfo_pool); 356 while (cdi != NULL) { 357 tmp = TAILQ_NEXT(cdi, link); 358 free(cdi, M_DEVBUF); 359 cdi = tmp; 360 } 361 TAILQ_INIT(&d->dsp_cdevinfo_pool); 362 } 363 364 /* duplex / simplex cdev type */ 365 enum { 366 DSP_CDEV_TYPE_RDONLY, /* simplex read-only (record) */ 367 DSP_CDEV_TYPE_WRONLY, /* simplex write-only (play) */ 368 DSP_CDEV_TYPE_RDWR /* duplex read, write, or both */ 369 }; 370 371 enum { 372 DSP_CDEV_VOLCTL_NONE, 373 DSP_CDEV_VOLCTL_READ, 374 DSP_CDEV_VOLCTL_WRITE 375 }; 376 377 #define DSP_F_VALID(x) ((x) & (FREAD | FWRITE)) 378 #define DSP_F_DUPLEX(x) (((x) & (FREAD | FWRITE)) == (FREAD | FWRITE)) 379 #define DSP_F_SIMPLEX(x) (!DSP_F_DUPLEX(x)) 380 #define DSP_F_READ(x) ((x) & FREAD) 381 #define DSP_F_WRITE(x) ((x) & FWRITE) 382 383 static const struct { 384 int type; 385 char *name; 386 char *sep; 387 char *alias; 388 int use_sep; 389 int hw; 390 int max; 391 int volctl; 392 uint32_t fmt, spd; 393 int query; 394 } dsp_cdevs[] = { 395 { SND_DEV_DSP, "dsp", ".", NULL, 0, 0, 0, 0, 396 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 397 DSP_CDEV_TYPE_RDWR }, 398 { SND_DEV_AUDIO, "audio", ".", NULL, 0, 0, 0, 0, 399 SND_FORMAT(AFMT_MU_LAW, 1, 0), DSP_DEFAULT_SPEED, 400 DSP_CDEV_TYPE_RDWR }, 401 { SND_DEV_DSP16, "dspW", ".", NULL, 0, 0, 0, 0, 402 SND_FORMAT(AFMT_S16_LE, 1, 0), DSP_DEFAULT_SPEED, 403 DSP_CDEV_TYPE_RDWR }, 404 { SND_DEV_DSPHW_PLAY, "dsp", ".p", NULL, 1, 1, SND_MAXHWCHAN, 1, 405 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 406 { SND_DEV_DSPHW_VPLAY, "dsp", ".vp", NULL, 1, 1, SND_MAXVCHANS, 1, 407 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 408 { SND_DEV_DSPHW_REC, "dsp", ".r", NULL, 1, 1, SND_MAXHWCHAN, 1, 409 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 410 { SND_DEV_DSPHW_VREC, "dsp", ".vr", NULL, 1, 1, SND_MAXVCHANS, 1, 411 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 412 { SND_DEV_DSPHW_CD, "dspcd", ".", NULL, 0, 0, 0, 0, 413 SND_FORMAT(AFMT_S16_LE, 2, 0), 44100, DSP_CDEV_TYPE_RDWR }, 414 /* Low priority, OSSv4 aliases. */ 415 { SND_DEV_DSP, "dsp_ac3", ".", "dsp", 0, 0, 0, 0, 416 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 417 DSP_CDEV_TYPE_RDWR }, 418 { SND_DEV_DSP, "dsp_mmap", ".", "dsp", 0, 0, 0, 0, 419 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 420 DSP_CDEV_TYPE_RDWR }, 421 { SND_DEV_DSP, "dsp_multich", ".", "dsp", 0, 0, 0, 0, 422 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 423 DSP_CDEV_TYPE_RDWR }, 424 { SND_DEV_DSP, "dsp_spdifout", ".", "dsp", 0, 0, 0, 0, 425 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 426 DSP_CDEV_TYPE_RDWR }, 427 { SND_DEV_DSP, "dsp_spdifin", ".", "dsp", 0, 0, 0, 0, 428 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 429 DSP_CDEV_TYPE_RDWR }, 430 }; 431 432 #define DSP_FIXUP_ERROR() do { \ 433 prio = dsp_get_flags(i_dev); \ 434 if (!DSP_F_VALID(flags)) \ 435 error = EINVAL; \ 436 if (!DSP_F_DUPLEX(flags) && \ 437 ((DSP_F_READ(flags) && d->reccount == 0) || \ 438 (DSP_F_WRITE(flags) && d->playcount == 0))) \ 439 error = ENOTSUP; \ 440 else if (!DSP_F_DUPLEX(flags) && (prio & SD_F_SIMPLEX) && \ 441 ((DSP_F_READ(flags) && (prio & SD_F_PRIO_WR)) || \ 442 (DSP_F_WRITE(flags) && (prio & SD_F_PRIO_RD)))) \ 443 error = EBUSY; \ 444 else if (DSP_REGISTERED(d, i_dev)) \ 445 error = EBUSY; \ 446 } while (0) 447 448 static int 449 dsp_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 450 { 451 struct pcm_channel *rdch, *wrch; 452 struct snddev_info *d; 453 uint32_t fmt, spd, prio, volctl; 454 int i, error, rderror, wrerror, devtype, wdevunit, rdevunit; 455 456 /* Kind of impossible.. */ 457 if (i_dev == NULL || td == NULL) 458 return (ENODEV); 459 460 d = dsp_get_info(i_dev); 461 if (PCM_DETACHING(d) || !PCM_REGISTERED(d)) 462 return (EBADF); 463 464 PCM_GIANT_ENTER(d); 465 466 /* Lock snddev so nobody else can monkey with it. */ 467 PCM_LOCK(d); 468 PCM_WAIT(d); 469 470 /* 471 * Try to acquire cloned device before someone else pick it. 472 * ENODEV means this is not a cloned droids. 473 */ 474 error = snd_clone_acquire(i_dev); 475 if (!(error == 0 || error == ENODEV)) { 476 DSP_FIXUP_ERROR(); 477 PCM_UNLOCK(d); 478 PCM_GIANT_EXIT(d); 479 return (error); 480 } 481 482 error = 0; 483 DSP_FIXUP_ERROR(); 484 485 if (error != 0) { 486 (void)snd_clone_release(i_dev); 487 PCM_UNLOCK(d); 488 PCM_GIANT_EXIT(d); 489 return (error); 490 } 491 492 /* 493 * That is just enough. Acquire and unlock pcm lock so 494 * the other will just have to wait until we finish doing 495 * everything. 496 */ 497 PCM_ACQUIRE(d); 498 PCM_UNLOCK(d); 499 500 devtype = PCMDEV(i_dev); 501 wdevunit = -1; 502 rdevunit = -1; 503 fmt = 0; 504 spd = 0; 505 volctl = DSP_CDEV_VOLCTL_NONE; 506 507 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 508 if (devtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 509 continue; 510 /* 511 * Volume control only valid for DSPHW devices, 512 * and it must be opened in opposite direction be it 513 * simplex or duplex. Anything else will be handled 514 * as usual. 515 */ 516 if (dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY) { 517 if (dsp_cdevs[i].volctl != 0 && 518 DSP_F_READ(flags)) { 519 volctl = DSP_CDEV_VOLCTL_WRITE; 520 flags &= ~FREAD; 521 flags |= FWRITE; 522 } 523 if (DSP_F_READ(flags)) { 524 (void)snd_clone_release(i_dev); 525 PCM_RELEASE_QUICK(d); 526 PCM_GIANT_EXIT(d); 527 return (ENOTSUP); 528 } 529 wdevunit = dev2unit(i_dev); 530 } else if (dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY) { 531 if (dsp_cdevs[i].volctl != 0 && 532 DSP_F_WRITE(flags)) { 533 volctl = DSP_CDEV_VOLCTL_READ; 534 flags &= ~FWRITE; 535 flags |= FREAD; 536 } 537 if (DSP_F_WRITE(flags)) { 538 (void)snd_clone_release(i_dev); 539 PCM_RELEASE_QUICK(d); 540 PCM_GIANT_EXIT(d); 541 return (ENOTSUP); 542 } 543 rdevunit = dev2unit(i_dev); 544 } 545 fmt = dsp_cdevs[i].fmt; 546 spd = dsp_cdevs[i].spd; 547 break; 548 } 549 550 /* No matching devtype? */ 551 if (fmt == 0 || spd == 0) 552 panic("impossible devtype %d", devtype); 553 554 rdch = NULL; 555 wrch = NULL; 556 rderror = 0; 557 wrerror = 0; 558 559 /* 560 * if we get here, the open request is valid- either: 561 * * we were previously not open 562 * * we were open for play xor record and the opener wants 563 * the non-open direction 564 */ 565 if (DSP_F_READ(flags)) { 566 /* open for read */ 567 rderror = pcm_chnalloc(d, &rdch, PCMDIR_REC, 568 td->td_proc->p_pid, td->td_proc->p_comm, rdevunit); 569 570 if (rderror == 0 && chn_reset(rdch, fmt, spd) != 0) 571 rderror = ENXIO; 572 573 if (volctl == DSP_CDEV_VOLCTL_READ) 574 rderror = 0; 575 576 if (rderror != 0) { 577 if (rdch != NULL) 578 pcm_chnrelease(rdch); 579 if (!DSP_F_DUPLEX(flags)) { 580 (void)snd_clone_release(i_dev); 581 PCM_RELEASE_QUICK(d); 582 PCM_GIANT_EXIT(d); 583 return (rderror); 584 } 585 rdch = NULL; 586 } else if (volctl == DSP_CDEV_VOLCTL_READ) { 587 if (rdch != NULL) { 588 pcm_chnref(rdch, 1); 589 pcm_chnrelease(rdch); 590 } 591 } else { 592 if (flags & O_NONBLOCK) 593 rdch->flags |= CHN_F_NBIO; 594 if (flags & O_EXCL) 595 rdch->flags |= CHN_F_EXCLUSIVE; 596 pcm_chnref(rdch, 1); 597 if (volctl == DSP_CDEV_VOLCTL_NONE) 598 chn_vpc_reset(rdch, SND_VOL_C_PCM, 0); 599 CHN_UNLOCK(rdch); 600 } 601 } 602 603 if (DSP_F_WRITE(flags)) { 604 /* open for write */ 605 wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY, 606 td->td_proc->p_pid, td->td_proc->p_comm, wdevunit); 607 608 if (wrerror == 0 && chn_reset(wrch, fmt, spd) != 0) 609 wrerror = ENXIO; 610 611 if (volctl == DSP_CDEV_VOLCTL_WRITE) 612 wrerror = 0; 613 614 if (wrerror != 0) { 615 if (wrch != NULL) 616 pcm_chnrelease(wrch); 617 if (!DSP_F_DUPLEX(flags)) { 618 if (rdch != NULL) { 619 /* 620 * Lock, deref and release previously 621 * created record channel 622 */ 623 CHN_LOCK(rdch); 624 pcm_chnref(rdch, -1); 625 pcm_chnrelease(rdch); 626 } 627 (void)snd_clone_release(i_dev); 628 PCM_RELEASE_QUICK(d); 629 PCM_GIANT_EXIT(d); 630 return (wrerror); 631 } 632 wrch = NULL; 633 } else if (volctl == DSP_CDEV_VOLCTL_WRITE) { 634 if (wrch != NULL) { 635 pcm_chnref(wrch, 1); 636 pcm_chnrelease(wrch); 637 } 638 } else { 639 if (flags & O_NONBLOCK) 640 wrch->flags |= CHN_F_NBIO; 641 if (flags & O_EXCL) 642 wrch->flags |= CHN_F_EXCLUSIVE; 643 pcm_chnref(wrch, 1); 644 if (volctl == DSP_CDEV_VOLCTL_NONE) 645 chn_vpc_reset(wrch, SND_VOL_C_PCM, 0); 646 CHN_UNLOCK(wrch); 647 } 648 } 649 650 PCM_LOCK(d); 651 652 /* 653 * We're done. Allocate channels information for this cdev. 654 */ 655 switch (volctl) { 656 case DSP_CDEV_VOLCTL_READ: 657 KASSERT(wrch == NULL, ("wrch=%p not null!", wrch)); 658 dsp_cdevinfo_alloc(i_dev, NULL, NULL, rdch); 659 break; 660 case DSP_CDEV_VOLCTL_WRITE: 661 KASSERT(rdch == NULL, ("rdch=%p not null!", rdch)); 662 dsp_cdevinfo_alloc(i_dev, NULL, NULL, wrch); 663 break; 664 case DSP_CDEV_VOLCTL_NONE: 665 default: 666 if (wrch == NULL && rdch == NULL) { 667 (void)snd_clone_release(i_dev); 668 PCM_RELEASE(d); 669 PCM_UNLOCK(d); 670 PCM_GIANT_EXIT(d); 671 if (wrerror != 0) 672 return (wrerror); 673 if (rderror != 0) 674 return (rderror); 675 return (EINVAL); 676 } 677 dsp_cdevinfo_alloc(i_dev, rdch, wrch, NULL); 678 if (rdch != NULL) 679 CHN_INSERT_HEAD(d, rdch, channels.pcm.opened); 680 if (wrch != NULL) 681 CHN_INSERT_HEAD(d, wrch, channels.pcm.opened); 682 break; 683 } 684 685 /* 686 * Increase clone refcount for its automatic garbage collector. 687 */ 688 (void)snd_clone_ref(i_dev); 689 690 PCM_RELEASE(d); 691 PCM_UNLOCK(d); 692 693 PCM_GIANT_LEAVE(d); 694 695 return (0); 696 } 697 698 static int 699 dsp_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 700 { 701 struct pcm_channel *rdch, *wrch, *volch; 702 struct snddev_info *d; 703 int sg_ids, rdref, wdref; 704 705 d = dsp_get_info(i_dev); 706 if (!DSP_REGISTERED(d, i_dev)) 707 return (EBADF); 708 709 PCM_GIANT_ENTER(d); 710 711 PCM_LOCK(d); 712 PCM_WAIT(d); 713 PCM_ACQUIRE(d); 714 715 rdch = PCM_RDCH(i_dev); 716 wrch = PCM_WRCH(i_dev); 717 volch = PCM_VOLCH(i_dev); 718 719 PCM_RDCH(i_dev) = NULL; 720 PCM_WRCH(i_dev) = NULL; 721 PCM_VOLCH(i_dev) = NULL; 722 723 rdref = -1; 724 wdref = -1; 725 726 if (volch != NULL) { 727 if (volch == rdch) 728 rdref--; 729 else if (volch == wrch) 730 wdref--; 731 else { 732 CHN_LOCK(volch); 733 pcm_chnref(volch, -1); 734 CHN_UNLOCK(volch); 735 } 736 } 737 738 if (rdch != NULL) 739 CHN_REMOVE(d, rdch, channels.pcm.opened); 740 if (wrch != NULL) 741 CHN_REMOVE(d, wrch, channels.pcm.opened); 742 743 if (rdch != NULL || wrch != NULL) { 744 PCM_UNLOCK(d); 745 if (rdch != NULL) { 746 /* 747 * The channel itself need not be locked because: 748 * a) Adding a channel to a syncgroup happens only 749 * in dsp_ioctl(), which cannot run concurrently 750 * to dsp_close(). 751 * b) The syncmember pointer (sm) is protected by 752 * the global syncgroup list lock. 753 * c) A channel can't just disappear, invalidating 754 * pointers, unless it's closed/dereferenced 755 * first. 756 */ 757 PCM_SG_LOCK(); 758 sg_ids = chn_syncdestroy(rdch); 759 PCM_SG_UNLOCK(); 760 if (sg_ids != 0) 761 free_unr(pcmsg_unrhdr, sg_ids); 762 763 CHN_LOCK(rdch); 764 pcm_chnref(rdch, rdref); 765 chn_abort(rdch); /* won't sleep */ 766 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 767 CHN_F_DEAD | CHN_F_EXCLUSIVE); 768 chn_reset(rdch, 0, 0); 769 pcm_chnrelease(rdch); 770 } 771 if (wrch != NULL) { 772 /* 773 * Please see block above. 774 */ 775 PCM_SG_LOCK(); 776 sg_ids = chn_syncdestroy(wrch); 777 PCM_SG_UNLOCK(); 778 if (sg_ids != 0) 779 free_unr(pcmsg_unrhdr, sg_ids); 780 781 CHN_LOCK(wrch); 782 pcm_chnref(wrch, wdref); 783 chn_flush(wrch); /* may sleep */ 784 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 785 CHN_F_DEAD | CHN_F_EXCLUSIVE); 786 chn_reset(wrch, 0, 0); 787 pcm_chnrelease(wrch); 788 } 789 PCM_LOCK(d); 790 } 791 792 dsp_cdevinfo_free(i_dev); 793 /* 794 * Release clone busy state and unref it so the automatic 795 * garbage collector will get the hint and do the remaining 796 * cleanup process. 797 */ 798 (void)snd_clone_release(i_dev); 799 800 /* 801 * destroy_dev() might sleep, so release pcm lock 802 * here and rely on pcm cv serialization. 803 */ 804 PCM_UNLOCK(d); 805 (void)snd_clone_unref(i_dev); 806 PCM_LOCK(d); 807 808 PCM_RELEASE(d); 809 PCM_UNLOCK(d); 810 811 PCM_GIANT_LEAVE(d); 812 813 return (0); 814 } 815 816 static __inline int 817 dsp_io_ops(struct cdev *i_dev, struct uio *buf) 818 { 819 struct snddev_info *d; 820 struct pcm_channel **ch, *rdch, *wrch; 821 int (*chn_io)(struct pcm_channel *, struct uio *); 822 int prio, ret; 823 pid_t runpid; 824 825 KASSERT(i_dev != NULL && buf != NULL && 826 (buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE), 827 ("%s(): io train wreck!", __func__)); 828 829 d = dsp_get_info(i_dev); 830 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 831 return (EBADF); 832 833 PCM_GIANT_ENTER(d); 834 835 switch (buf->uio_rw) { 836 case UIO_READ: 837 prio = SD_F_PRIO_RD; 838 ch = &rdch; 839 chn_io = chn_read; 840 break; 841 case UIO_WRITE: 842 prio = SD_F_PRIO_WR; 843 ch = &wrch; 844 chn_io = chn_write; 845 break; 846 default: 847 panic("invalid/corrupted uio direction: %d", buf->uio_rw); 848 break; 849 } 850 851 rdch = NULL; 852 wrch = NULL; 853 runpid = buf->uio_td->td_proc->p_pid; 854 855 getchns(i_dev, &rdch, &wrch, prio); 856 857 if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) { 858 if (rdch != NULL || wrch != NULL) 859 relchns(i_dev, rdch, wrch, prio); 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 int left, right, center, mute; 967 968 d = dsp_get_info(dev); 969 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 970 return (-1); 971 972 PCM_UNLOCKASSERT(d); 973 974 j = cmd & 0xff; 975 976 rdch = PCM_RDCH(dev); 977 wrch = PCM_WRCH(dev); 978 979 /* No specific channel, look into cache */ 980 if (volch == NULL) 981 volch = PCM_VOLCH(dev); 982 983 /* Look harder */ 984 if (volch == NULL) { 985 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 986 volch = rdch; 987 else if (j == SOUND_MIXER_PCM && wrch != NULL) 988 volch = wrch; 989 } 990 991 devtype = PCMDEV(dev); 992 993 /* Look super harder */ 994 if (volch == NULL && 995 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 996 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 997 ret = dsp_get_volume_channel(dev, &volch); 998 if (ret != 0) 999 return (ret); 1000 if (volch == NULL) 1001 return (EINVAL); 1002 } 1003 1004 /* Final validation */ 1005 if (volch == NULL) 1006 return (EINVAL); 1007 1008 CHN_LOCK(volch); 1009 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 1010 CHN_UNLOCK(volch); 1011 return (EINVAL); 1012 } 1013 1014 switch (cmd & ~0xff) { 1015 case MIXER_WRITE(0): 1016 switch (j) { 1017 case SOUND_MIXER_MUTE: 1018 if (volch->direction == PCMDIR_REC) { 1019 chn_setmute_multi(volch, SND_VOL_C_PCM, (*(int *)arg & SOUND_MASK_RECLEV) != 0); 1020 } else { 1021 chn_setmute_multi(volch, SND_VOL_C_PCM, (*(int *)arg & SOUND_MASK_PCM) != 0); 1022 } 1023 break; 1024 case SOUND_MIXER_PCM: 1025 if (volch->direction != PCMDIR_PLAY) 1026 break; 1027 left = *(int *)arg & 0x7f; 1028 right = ((*(int *)arg) >> 8) & 0x7f; 1029 center = (left + right) >> 1; 1030 chn_setvolume_multi(volch, SND_VOL_C_PCM, 1031 left, right, center); 1032 break; 1033 case SOUND_MIXER_RECLEV: 1034 if (volch->direction != PCMDIR_REC) 1035 break; 1036 left = *(int *)arg & 0x7f; 1037 right = ((*(int *)arg) >> 8) & 0x7f; 1038 center = (left + right) >> 1; 1039 chn_setvolume_multi(volch, SND_VOL_C_PCM, 1040 left, right, center); 1041 break; 1042 default: 1043 /* ignore all other mixer writes */ 1044 break; 1045 } 1046 break; 1047 1048 case MIXER_READ(0): 1049 switch (j) { 1050 case SOUND_MIXER_MUTE: 1051 mute = CHN_GETMUTE(volch, SND_VOL_C_PCM, SND_CHN_T_FL) || 1052 CHN_GETMUTE(volch, SND_VOL_C_PCM, SND_CHN_T_FR); 1053 if (volch->direction == PCMDIR_REC) { 1054 *(int *)arg = mute << SOUND_MIXER_RECLEV; 1055 } else { 1056 *(int *)arg = mute << SOUND_MIXER_PCM; 1057 } 1058 break; 1059 case SOUND_MIXER_PCM: 1060 if (volch->direction != PCMDIR_PLAY) 1061 break; 1062 *(int *)arg = CHN_GETVOLUME(volch, 1063 SND_VOL_C_PCM, SND_CHN_T_FL); 1064 *(int *)arg |= CHN_GETVOLUME(volch, 1065 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1066 break; 1067 case SOUND_MIXER_RECLEV: 1068 if (volch->direction != PCMDIR_REC) 1069 break; 1070 *(int *)arg = CHN_GETVOLUME(volch, 1071 SND_VOL_C_PCM, SND_CHN_T_FL); 1072 *(int *)arg |= CHN_GETVOLUME(volch, 1073 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1074 break; 1075 case SOUND_MIXER_DEVMASK: 1076 case SOUND_MIXER_CAPS: 1077 case SOUND_MIXER_STEREODEVS: 1078 if (volch->direction == PCMDIR_REC) 1079 *(int *)arg = SOUND_MASK_RECLEV; 1080 else 1081 *(int *)arg = SOUND_MASK_PCM; 1082 break; 1083 default: 1084 *(int *)arg = 0; 1085 break; 1086 } 1087 break; 1088 1089 default: 1090 break; 1091 } 1092 CHN_UNLOCK(volch); 1093 return (0); 1094 } 1095 1096 static int 1097 dsp_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1098 struct thread *td) 1099 { 1100 struct pcm_channel *chn, *rdch, *wrch; 1101 struct snddev_info *d; 1102 u_long xcmd; 1103 int *arg_i, ret, tmp; 1104 1105 d = dsp_get_info(i_dev); 1106 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 1107 return (EBADF); 1108 1109 PCM_GIANT_ENTER(d); 1110 1111 arg_i = (int *)arg; 1112 ret = 0; 1113 xcmd = 0; 1114 chn = NULL; 1115 1116 if (IOCGROUP(cmd) == 'M') { 1117 if (cmd == OSS_GETVERSION) { 1118 *arg_i = SOUND_VERSION; 1119 PCM_GIANT_EXIT(d); 1120 return (0); 1121 } 1122 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1123 if (ret != -1) { 1124 PCM_GIANT_EXIT(d); 1125 return (ret); 1126 } 1127 1128 if (d->mixer_dev != NULL) { 1129 PCM_ACQUIRE_QUICK(d); 1130 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1131 MIXER_CMD_DIRECT); 1132 PCM_RELEASE_QUICK(d); 1133 } else 1134 ret = EBADF; 1135 1136 PCM_GIANT_EXIT(d); 1137 1138 return (ret); 1139 } 1140 1141 /* 1142 * Certain ioctls may be made on any type of device (audio, mixer, 1143 * and MIDI). Handle those special cases here. 1144 */ 1145 if (IOCGROUP(cmd) == 'X') { 1146 PCM_ACQUIRE_QUICK(d); 1147 switch(cmd) { 1148 case SNDCTL_SYSINFO: 1149 sound_oss_sysinfo((oss_sysinfo *)arg); 1150 break; 1151 case SNDCTL_CARDINFO: 1152 ret = sound_oss_card_info((oss_card_info *)arg); 1153 break; 1154 case SNDCTL_AUDIOINFO: 1155 case SNDCTL_AUDIOINFO_EX: 1156 case SNDCTL_ENGINEINFO: 1157 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1158 break; 1159 case SNDCTL_MIXERINFO: 1160 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1161 break; 1162 default: 1163 ret = EINVAL; 1164 } 1165 PCM_RELEASE_QUICK(d); 1166 PCM_GIANT_EXIT(d); 1167 return (ret); 1168 } 1169 1170 getchns(i_dev, &rdch, &wrch, 0); 1171 1172 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1173 wrch = NULL; 1174 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1175 rdch = NULL; 1176 1177 if (wrch == NULL && rdch == NULL) { 1178 PCM_GIANT_EXIT(d); 1179 return (EINVAL); 1180 } 1181 1182 switch(cmd) { 1183 #ifdef OLDPCM_IOCTL 1184 /* 1185 * we start with the new ioctl interface. 1186 */ 1187 case AIONWRITE: /* how many bytes can write ? */ 1188 if (wrch) { 1189 CHN_LOCK(wrch); 1190 /* 1191 if (wrch && wrch->bufhard.dl) 1192 while (chn_wrfeed(wrch) == 0); 1193 */ 1194 *arg_i = sndbuf_getfree(wrch->bufsoft); 1195 CHN_UNLOCK(wrch); 1196 } else { 1197 *arg_i = 0; 1198 ret = EINVAL; 1199 } 1200 break; 1201 1202 case AIOSSIZE: /* set the current blocksize */ 1203 { 1204 struct snd_size *p = (struct snd_size *)arg; 1205 1206 p->play_size = 0; 1207 p->rec_size = 0; 1208 PCM_ACQUIRE_QUICK(d); 1209 if (wrch) { 1210 CHN_LOCK(wrch); 1211 chn_setblocksize(wrch, 2, p->play_size); 1212 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1213 CHN_UNLOCK(wrch); 1214 } 1215 if (rdch) { 1216 CHN_LOCK(rdch); 1217 chn_setblocksize(rdch, 2, p->rec_size); 1218 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1219 CHN_UNLOCK(rdch); 1220 } 1221 PCM_RELEASE_QUICK(d); 1222 } 1223 break; 1224 case AIOGSIZE: /* get the current blocksize */ 1225 { 1226 struct snd_size *p = (struct snd_size *)arg; 1227 1228 if (wrch) { 1229 CHN_LOCK(wrch); 1230 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1231 CHN_UNLOCK(wrch); 1232 } 1233 if (rdch) { 1234 CHN_LOCK(rdch); 1235 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1236 CHN_UNLOCK(rdch); 1237 } 1238 } 1239 break; 1240 1241 case AIOSFMT: 1242 case AIOGFMT: 1243 { 1244 snd_chan_param *p = (snd_chan_param *)arg; 1245 1246 if (cmd == AIOSFMT && 1247 ((p->play_format != 0 && p->play_rate == 0) || 1248 (p->rec_format != 0 && p->rec_rate == 0))) { 1249 ret = EINVAL; 1250 break; 1251 } 1252 PCM_ACQUIRE_QUICK(d); 1253 if (wrch) { 1254 CHN_LOCK(wrch); 1255 if (cmd == AIOSFMT && p->play_format != 0) { 1256 chn_setformat(wrch, 1257 SND_FORMAT(p->play_format, 1258 AFMT_CHANNEL(wrch->format), 1259 AFMT_EXTCHANNEL(wrch->format))); 1260 chn_setspeed(wrch, p->play_rate); 1261 } 1262 p->play_rate = wrch->speed; 1263 p->play_format = AFMT_ENCODING(wrch->format); 1264 CHN_UNLOCK(wrch); 1265 } else { 1266 p->play_rate = 0; 1267 p->play_format = 0; 1268 } 1269 if (rdch) { 1270 CHN_LOCK(rdch); 1271 if (cmd == AIOSFMT && p->rec_format != 0) { 1272 chn_setformat(rdch, 1273 SND_FORMAT(p->rec_format, 1274 AFMT_CHANNEL(rdch->format), 1275 AFMT_EXTCHANNEL(rdch->format))); 1276 chn_setspeed(rdch, p->rec_rate); 1277 } 1278 p->rec_rate = rdch->speed; 1279 p->rec_format = AFMT_ENCODING(rdch->format); 1280 CHN_UNLOCK(rdch); 1281 } else { 1282 p->rec_rate = 0; 1283 p->rec_format = 0; 1284 } 1285 PCM_RELEASE_QUICK(d); 1286 } 1287 break; 1288 1289 case AIOGCAP: /* get capabilities */ 1290 { 1291 snd_capabilities *p = (snd_capabilities *)arg; 1292 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1293 struct cdev *pdev; 1294 1295 PCM_LOCK(d); 1296 if (rdch) { 1297 CHN_LOCK(rdch); 1298 rcaps = chn_getcaps(rdch); 1299 } 1300 if (wrch) { 1301 CHN_LOCK(wrch); 1302 pcaps = chn_getcaps(wrch); 1303 } 1304 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1305 pcaps? pcaps->minspeed : 0); 1306 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1307 pcaps? pcaps->maxspeed : 1000000); 1308 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1309 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1310 /* XXX bad on sb16 */ 1311 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1312 (wrch? chn_getformats(wrch) : 0xffffffff); 1313 if (rdch && wrch) 1314 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1315 pdev = d->mixer_dev; 1316 p->mixers = 1; /* default: one mixer */ 1317 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1318 p->left = p->right = 100; 1319 if (wrch) 1320 CHN_UNLOCK(wrch); 1321 if (rdch) 1322 CHN_UNLOCK(rdch); 1323 PCM_UNLOCK(d); 1324 } 1325 break; 1326 1327 case AIOSTOP: 1328 if (*arg_i == AIOSYNC_PLAY && wrch) { 1329 CHN_LOCK(wrch); 1330 *arg_i = chn_abort(wrch); 1331 CHN_UNLOCK(wrch); 1332 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1333 CHN_LOCK(rdch); 1334 *arg_i = chn_abort(rdch); 1335 CHN_UNLOCK(rdch); 1336 } else { 1337 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1338 *arg_i = 0; 1339 } 1340 break; 1341 1342 case AIOSYNC: 1343 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1344 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1345 break; 1346 #endif 1347 /* 1348 * here follow the standard ioctls (filio.h etc.) 1349 */ 1350 case FIONREAD: /* get # bytes to read */ 1351 if (rdch) { 1352 CHN_LOCK(rdch); 1353 /* if (rdch && rdch->bufhard.dl) 1354 while (chn_rdfeed(rdch) == 0); 1355 */ 1356 *arg_i = sndbuf_getready(rdch->bufsoft); 1357 CHN_UNLOCK(rdch); 1358 } else { 1359 *arg_i = 0; 1360 ret = EINVAL; 1361 } 1362 break; 1363 1364 case FIOASYNC: /*set/clear async i/o */ 1365 DEB( printf("FIOASYNC\n") ; ) 1366 break; 1367 1368 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1369 case FIONBIO: /* set/clear non-blocking i/o */ 1370 if (rdch) { 1371 CHN_LOCK(rdch); 1372 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1373 rdch->flags |= CHN_F_NBIO; 1374 else 1375 rdch->flags &= ~CHN_F_NBIO; 1376 CHN_UNLOCK(rdch); 1377 } 1378 if (wrch) { 1379 CHN_LOCK(wrch); 1380 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1381 wrch->flags |= CHN_F_NBIO; 1382 else 1383 wrch->flags &= ~CHN_F_NBIO; 1384 CHN_UNLOCK(wrch); 1385 } 1386 break; 1387 1388 /* 1389 * Finally, here is the linux-compatible ioctl interface 1390 */ 1391 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1392 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1393 case SNDCTL_DSP_GETBLKSIZE: 1394 chn = wrch ? wrch : rdch; 1395 if (chn) { 1396 CHN_LOCK(chn); 1397 *arg_i = sndbuf_getblksz(chn->bufsoft); 1398 CHN_UNLOCK(chn); 1399 } else { 1400 *arg_i = 0; 1401 ret = EINVAL; 1402 } 1403 break; 1404 1405 case SNDCTL_DSP_SETBLKSIZE: 1406 RANGE(*arg_i, 16, 65536); 1407 PCM_ACQUIRE_QUICK(d); 1408 if (wrch) { 1409 CHN_LOCK(wrch); 1410 chn_setblocksize(wrch, 2, *arg_i); 1411 CHN_UNLOCK(wrch); 1412 } 1413 if (rdch) { 1414 CHN_LOCK(rdch); 1415 chn_setblocksize(rdch, 2, *arg_i); 1416 CHN_UNLOCK(rdch); 1417 } 1418 PCM_RELEASE_QUICK(d); 1419 break; 1420 1421 case SNDCTL_DSP_RESET: 1422 DEB(printf("dsp reset\n")); 1423 if (wrch) { 1424 CHN_LOCK(wrch); 1425 chn_abort(wrch); 1426 chn_resetbuf(wrch); 1427 CHN_UNLOCK(wrch); 1428 } 1429 if (rdch) { 1430 CHN_LOCK(rdch); 1431 chn_abort(rdch); 1432 chn_resetbuf(rdch); 1433 CHN_UNLOCK(rdch); 1434 } 1435 break; 1436 1437 case SNDCTL_DSP_SYNC: 1438 DEB(printf("dsp sync\n")); 1439 /* chn_sync may sleep */ 1440 if (wrch) { 1441 CHN_LOCK(wrch); 1442 chn_sync(wrch, 0); 1443 CHN_UNLOCK(wrch); 1444 } 1445 break; 1446 1447 case SNDCTL_DSP_SPEED: 1448 /* chn_setspeed may sleep */ 1449 tmp = 0; 1450 PCM_ACQUIRE_QUICK(d); 1451 if (wrch) { 1452 CHN_LOCK(wrch); 1453 ret = chn_setspeed(wrch, *arg_i); 1454 tmp = wrch->speed; 1455 CHN_UNLOCK(wrch); 1456 } 1457 if (rdch && ret == 0) { 1458 CHN_LOCK(rdch); 1459 ret = chn_setspeed(rdch, *arg_i); 1460 if (tmp == 0) 1461 tmp = rdch->speed; 1462 CHN_UNLOCK(rdch); 1463 } 1464 PCM_RELEASE_QUICK(d); 1465 *arg_i = tmp; 1466 break; 1467 1468 case SOUND_PCM_READ_RATE: 1469 chn = wrch ? wrch : rdch; 1470 if (chn) { 1471 CHN_LOCK(chn); 1472 *arg_i = chn->speed; 1473 CHN_UNLOCK(chn); 1474 } else { 1475 *arg_i = 0; 1476 ret = EINVAL; 1477 } 1478 break; 1479 1480 case SNDCTL_DSP_STEREO: 1481 tmp = -1; 1482 *arg_i = (*arg_i)? 2 : 1; 1483 PCM_ACQUIRE_QUICK(d); 1484 if (wrch) { 1485 CHN_LOCK(wrch); 1486 ret = chn_setformat(wrch, 1487 SND_FORMAT(wrch->format, *arg_i, 0)); 1488 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1489 CHN_UNLOCK(wrch); 1490 } 1491 if (rdch && ret == 0) { 1492 CHN_LOCK(rdch); 1493 ret = chn_setformat(rdch, 1494 SND_FORMAT(rdch->format, *arg_i, 0)); 1495 if (tmp == -1) 1496 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1497 CHN_UNLOCK(rdch); 1498 } 1499 PCM_RELEASE_QUICK(d); 1500 *arg_i = tmp; 1501 break; 1502 1503 case SOUND_PCM_WRITE_CHANNELS: 1504 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1505 if (*arg_i < 0) { 1506 *arg_i = 0; 1507 ret = EINVAL; 1508 break; 1509 } 1510 if (*arg_i != 0) { 1511 struct pcmchan_matrix *m; 1512 uint32_t ext; 1513 1514 tmp = 0; 1515 if (*arg_i > SND_CHN_MAX) 1516 *arg_i = SND_CHN_MAX; 1517 1518 m = feeder_matrix_default_channel_map(*arg_i); 1519 if (m != NULL) 1520 ext = m->ext; 1521 else 1522 ext = 0; 1523 1524 PCM_ACQUIRE_QUICK(d); 1525 if (wrch) { 1526 CHN_LOCK(wrch); 1527 ret = chn_setformat(wrch, 1528 SND_FORMAT(wrch->format, *arg_i, ext)); 1529 tmp = AFMT_CHANNEL(wrch->format); 1530 CHN_UNLOCK(wrch); 1531 } 1532 if (rdch && ret == 0) { 1533 CHN_LOCK(rdch); 1534 ret = chn_setformat(rdch, 1535 SND_FORMAT(rdch->format, *arg_i, ext)); 1536 if (tmp == 0) 1537 tmp = AFMT_CHANNEL(rdch->format); 1538 CHN_UNLOCK(rdch); 1539 } 1540 PCM_RELEASE_QUICK(d); 1541 *arg_i = tmp; 1542 } else { 1543 chn = wrch ? wrch : rdch; 1544 CHN_LOCK(chn); 1545 *arg_i = AFMT_CHANNEL(chn->format); 1546 CHN_UNLOCK(chn); 1547 } 1548 break; 1549 1550 case SOUND_PCM_READ_CHANNELS: 1551 chn = wrch ? wrch : rdch; 1552 if (chn) { 1553 CHN_LOCK(chn); 1554 *arg_i = AFMT_CHANNEL(chn->format); 1555 CHN_UNLOCK(chn); 1556 } else { 1557 *arg_i = 0; 1558 ret = EINVAL; 1559 } 1560 break; 1561 1562 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1563 chn = wrch ? wrch : rdch; 1564 if (chn) { 1565 CHN_LOCK(chn); 1566 *arg_i = chn_getformats(chn); 1567 CHN_UNLOCK(chn); 1568 } else { 1569 *arg_i = 0; 1570 ret = EINVAL; 1571 } 1572 break; 1573 1574 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1575 if (*arg_i != AFMT_QUERY) { 1576 tmp = 0; 1577 PCM_ACQUIRE_QUICK(d); 1578 if (wrch) { 1579 CHN_LOCK(wrch); 1580 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1581 AFMT_CHANNEL(wrch->format), 1582 AFMT_EXTCHANNEL(wrch->format))); 1583 tmp = wrch->format; 1584 CHN_UNLOCK(wrch); 1585 } 1586 if (rdch && ret == 0) { 1587 CHN_LOCK(rdch); 1588 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1589 AFMT_CHANNEL(rdch->format), 1590 AFMT_EXTCHANNEL(rdch->format))); 1591 if (tmp == 0) 1592 tmp = rdch->format; 1593 CHN_UNLOCK(rdch); 1594 } 1595 PCM_RELEASE_QUICK(d); 1596 *arg_i = AFMT_ENCODING(tmp); 1597 } else { 1598 chn = wrch ? wrch : rdch; 1599 CHN_LOCK(chn); 1600 *arg_i = AFMT_ENCODING(chn->format); 1601 CHN_UNLOCK(chn); 1602 } 1603 break; 1604 1605 case SNDCTL_DSP_SETFRAGMENT: 1606 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1607 { 1608 uint32_t fragln = (*arg_i) & 0x0000ffff; 1609 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1610 uint32_t fragsz; 1611 uint32_t r_maxfrags, r_fragsz; 1612 1613 RANGE(fragln, 4, 16); 1614 fragsz = 1 << fragln; 1615 1616 if (maxfrags == 0) 1617 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1618 if (maxfrags < 2) 1619 maxfrags = 2; 1620 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1621 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1622 1623 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1624 PCM_ACQUIRE_QUICK(d); 1625 if (rdch) { 1626 CHN_LOCK(rdch); 1627 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1628 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1629 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1630 CHN_UNLOCK(rdch); 1631 } else { 1632 r_maxfrags = maxfrags; 1633 r_fragsz = fragsz; 1634 } 1635 if (wrch && ret == 0) { 1636 CHN_LOCK(wrch); 1637 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1638 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1639 fragsz = sndbuf_getblksz(wrch->bufsoft); 1640 CHN_UNLOCK(wrch); 1641 } else { /* use whatever came from the read channel */ 1642 maxfrags = r_maxfrags; 1643 fragsz = r_fragsz; 1644 } 1645 PCM_RELEASE_QUICK(d); 1646 1647 fragln = 0; 1648 while (fragsz > 1) { 1649 fragln++; 1650 fragsz >>= 1; 1651 } 1652 *arg_i = (maxfrags << 16) | fragln; 1653 } 1654 break; 1655 1656 case SNDCTL_DSP_GETISPACE: 1657 /* return the size of data available in the input queue */ 1658 { 1659 audio_buf_info *a = (audio_buf_info *)arg; 1660 if (rdch) { 1661 struct snd_dbuf *bs = rdch->bufsoft; 1662 1663 CHN_LOCK(rdch); 1664 a->bytes = sndbuf_getready(bs); 1665 a->fragments = a->bytes / sndbuf_getblksz(bs); 1666 a->fragstotal = sndbuf_getblkcnt(bs); 1667 a->fragsize = sndbuf_getblksz(bs); 1668 CHN_UNLOCK(rdch); 1669 } else 1670 ret = EINVAL; 1671 } 1672 break; 1673 1674 case SNDCTL_DSP_GETOSPACE: 1675 /* return space available in the output queue */ 1676 { 1677 audio_buf_info *a = (audio_buf_info *)arg; 1678 if (wrch) { 1679 struct snd_dbuf *bs = wrch->bufsoft; 1680 1681 CHN_LOCK(wrch); 1682 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1683 a->bytes = sndbuf_getfree(bs); 1684 a->fragments = a->bytes / sndbuf_getblksz(bs); 1685 a->fragstotal = sndbuf_getblkcnt(bs); 1686 a->fragsize = sndbuf_getblksz(bs); 1687 CHN_UNLOCK(wrch); 1688 } else 1689 ret = EINVAL; 1690 } 1691 break; 1692 1693 case SNDCTL_DSP_GETIPTR: 1694 { 1695 count_info *a = (count_info *)arg; 1696 if (rdch) { 1697 struct snd_dbuf *bs = rdch->bufsoft; 1698 1699 CHN_LOCK(rdch); 1700 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1701 a->bytes = sndbuf_gettotal(bs); 1702 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1703 a->ptr = sndbuf_getfreeptr(bs); 1704 rdch->blocks = sndbuf_getblocks(bs); 1705 CHN_UNLOCK(rdch); 1706 } else 1707 ret = EINVAL; 1708 } 1709 break; 1710 1711 case SNDCTL_DSP_GETOPTR: 1712 { 1713 count_info *a = (count_info *)arg; 1714 if (wrch) { 1715 struct snd_dbuf *bs = wrch->bufsoft; 1716 1717 CHN_LOCK(wrch); 1718 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1719 a->bytes = sndbuf_gettotal(bs); 1720 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1721 a->ptr = sndbuf_getreadyptr(bs); 1722 wrch->blocks = sndbuf_getblocks(bs); 1723 CHN_UNLOCK(wrch); 1724 } else 1725 ret = EINVAL; 1726 } 1727 break; 1728 1729 case SNDCTL_DSP_GETCAPS: 1730 PCM_LOCK(d); 1731 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1732 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1733 *arg_i |= PCM_CAP_DUPLEX; 1734 if (rdch && (rdch->flags & CHN_F_VIRTUAL) != 0) 1735 *arg_i |= PCM_CAP_VIRTUAL; 1736 if (wrch && (wrch->flags & CHN_F_VIRTUAL) != 0) 1737 *arg_i |= PCM_CAP_VIRTUAL; 1738 PCM_UNLOCK(d); 1739 break; 1740 1741 case SOUND_PCM_READ_BITS: 1742 chn = wrch ? wrch : rdch; 1743 if (chn) { 1744 CHN_LOCK(chn); 1745 if (chn->format & AFMT_8BIT) 1746 *arg_i = 8; 1747 else if (chn->format & AFMT_16BIT) 1748 *arg_i = 16; 1749 else if (chn->format & AFMT_24BIT) 1750 *arg_i = 24; 1751 else if (chn->format & AFMT_32BIT) 1752 *arg_i = 32; 1753 else 1754 ret = EINVAL; 1755 CHN_UNLOCK(chn); 1756 } else { 1757 *arg_i = 0; 1758 ret = EINVAL; 1759 } 1760 break; 1761 1762 case SNDCTL_DSP_SETTRIGGER: 1763 if (rdch) { 1764 CHN_LOCK(rdch); 1765 rdch->flags &= ~CHN_F_NOTRIGGER; 1766 if (*arg_i & PCM_ENABLE_INPUT) 1767 chn_start(rdch, 1); 1768 else { 1769 chn_abort(rdch); 1770 chn_resetbuf(rdch); 1771 rdch->flags |= CHN_F_NOTRIGGER; 1772 } 1773 CHN_UNLOCK(rdch); 1774 } 1775 if (wrch) { 1776 CHN_LOCK(wrch); 1777 wrch->flags &= ~CHN_F_NOTRIGGER; 1778 if (*arg_i & PCM_ENABLE_OUTPUT) 1779 chn_start(wrch, 1); 1780 else { 1781 chn_abort(wrch); 1782 chn_resetbuf(wrch); 1783 wrch->flags |= CHN_F_NOTRIGGER; 1784 } 1785 CHN_UNLOCK(wrch); 1786 } 1787 break; 1788 1789 case SNDCTL_DSP_GETTRIGGER: 1790 *arg_i = 0; 1791 if (wrch) { 1792 CHN_LOCK(wrch); 1793 if (wrch->flags & CHN_F_TRIGGERED) 1794 *arg_i |= PCM_ENABLE_OUTPUT; 1795 CHN_UNLOCK(wrch); 1796 } 1797 if (rdch) { 1798 CHN_LOCK(rdch); 1799 if (rdch->flags & CHN_F_TRIGGERED) 1800 *arg_i |= PCM_ENABLE_INPUT; 1801 CHN_UNLOCK(rdch); 1802 } 1803 break; 1804 1805 case SNDCTL_DSP_GETODELAY: 1806 if (wrch) { 1807 struct snd_dbuf *bs = wrch->bufsoft; 1808 1809 CHN_LOCK(wrch); 1810 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1811 *arg_i = sndbuf_getready(bs); 1812 CHN_UNLOCK(wrch); 1813 } else 1814 ret = EINVAL; 1815 break; 1816 1817 case SNDCTL_DSP_POST: 1818 if (wrch) { 1819 CHN_LOCK(wrch); 1820 wrch->flags &= ~CHN_F_NOTRIGGER; 1821 chn_start(wrch, 1); 1822 CHN_UNLOCK(wrch); 1823 } 1824 break; 1825 1826 case SNDCTL_DSP_SETDUPLEX: 1827 /* 1828 * switch to full-duplex mode if card is in half-duplex 1829 * mode and is able to work in full-duplex mode 1830 */ 1831 PCM_LOCK(d); 1832 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1833 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1834 PCM_UNLOCK(d); 1835 break; 1836 1837 /* 1838 * The following four ioctls are simple wrappers around mixer_ioctl 1839 * with no further processing. xcmd is short for "translated 1840 * command". 1841 */ 1842 case SNDCTL_DSP_GETRECVOL: 1843 if (xcmd == 0) { 1844 xcmd = SOUND_MIXER_READ_RECLEV; 1845 chn = rdch; 1846 } 1847 /* FALLTHROUGH */ 1848 case SNDCTL_DSP_SETRECVOL: 1849 if (xcmd == 0) { 1850 xcmd = SOUND_MIXER_WRITE_RECLEV; 1851 chn = rdch; 1852 } 1853 /* FALLTHROUGH */ 1854 case SNDCTL_DSP_GETPLAYVOL: 1855 if (xcmd == 0) { 1856 xcmd = SOUND_MIXER_READ_PCM; 1857 chn = wrch; 1858 } 1859 /* FALLTHROUGH */ 1860 case SNDCTL_DSP_SETPLAYVOL: 1861 if (xcmd == 0) { 1862 xcmd = SOUND_MIXER_WRITE_PCM; 1863 chn = wrch; 1864 } 1865 1866 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1867 if (ret != -1) { 1868 PCM_GIANT_EXIT(d); 1869 return (ret); 1870 } 1871 1872 if (d->mixer_dev != NULL) { 1873 PCM_ACQUIRE_QUICK(d); 1874 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1875 MIXER_CMD_DIRECT); 1876 PCM_RELEASE_QUICK(d); 1877 } else 1878 ret = ENOTSUP; 1879 1880 break; 1881 1882 case SNDCTL_DSP_GET_RECSRC_NAMES: 1883 case SNDCTL_DSP_GET_RECSRC: 1884 case SNDCTL_DSP_SET_RECSRC: 1885 if (d->mixer_dev != NULL) { 1886 PCM_ACQUIRE_QUICK(d); 1887 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1888 MIXER_CMD_DIRECT); 1889 PCM_RELEASE_QUICK(d); 1890 } else 1891 ret = ENOTSUP; 1892 break; 1893 1894 /* 1895 * The following 3 ioctls aren't very useful at the moment. For 1896 * now, only a single channel is associated with a cdev (/dev/dspN 1897 * instance), so there's only a single output routing to use (i.e., 1898 * the wrch bound to this cdev). 1899 */ 1900 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1901 { 1902 oss_mixer_enuminfo *ei; 1903 ei = (oss_mixer_enuminfo *)arg; 1904 ei->dev = 0; 1905 ei->ctrl = 0; 1906 ei->version = 0; /* static for now */ 1907 ei->strindex[0] = 0; 1908 1909 if (wrch != NULL) { 1910 ei->nvalues = 1; 1911 strlcpy(ei->strings, wrch->name, 1912 sizeof(ei->strings)); 1913 } else { 1914 ei->nvalues = 0; 1915 ei->strings[0] = '\0'; 1916 } 1917 } 1918 break; 1919 case SNDCTL_DSP_GET_PLAYTGT: 1920 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1921 /* 1922 * Re: SET_PLAYTGT 1923 * OSSv4: "The value that was accepted by the device will 1924 * be returned back in the variable pointed by the 1925 * argument." 1926 */ 1927 if (wrch != NULL) 1928 *arg_i = 0; 1929 else 1930 ret = EINVAL; 1931 break; 1932 1933 case SNDCTL_DSP_SILENCE: 1934 /* 1935 * Flush the software (pre-feed) buffer, but try to minimize playback 1936 * interruption. (I.e., record unplayed samples with intent to 1937 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1938 * functionality. 1939 */ 1940 if (wrch == NULL) 1941 ret = EINVAL; 1942 else { 1943 struct snd_dbuf *bs; 1944 CHN_LOCK(wrch); 1945 while (wrch->inprog != 0) 1946 cv_wait(&wrch->cv, wrch->lock); 1947 bs = wrch->bufsoft; 1948 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1949 bs->sl = sndbuf_getready(bs); 1950 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1951 sndbuf_fillsilence(bs); 1952 chn_start(wrch, 0); 1953 } 1954 CHN_UNLOCK(wrch); 1955 } 1956 break; 1957 1958 case SNDCTL_DSP_SKIP: 1959 /* 1960 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1961 * playback buffer by moving the current write position immediately 1962 * before the point where the device is currently reading the samples." 1963 */ 1964 if (wrch == NULL) 1965 ret = EINVAL; 1966 else { 1967 struct snd_dbuf *bs; 1968 CHN_LOCK(wrch); 1969 while (wrch->inprog != 0) 1970 cv_wait(&wrch->cv, wrch->lock); 1971 bs = wrch->bufsoft; 1972 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1973 sndbuf_softreset(bs); 1974 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1975 bs->sl = 0; 1976 chn_start(wrch, 0); 1977 } 1978 CHN_UNLOCK(wrch); 1979 } 1980 break; 1981 1982 case SNDCTL_DSP_CURRENT_OPTR: 1983 case SNDCTL_DSP_CURRENT_IPTR: 1984 /** 1985 * @note Changing formats resets the buffer counters, which differs 1986 * from the 4Front drivers. However, I don't expect this to be 1987 * much of a problem. 1988 * 1989 * @note In a test where @c CURRENT_OPTR is called immediately after write 1990 * returns, this driver is about 32K samples behind whereas 1991 * 4Front's is about 8K samples behind. Should determine source 1992 * of discrepancy, even if only out of curiosity. 1993 * 1994 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1995 */ 1996 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1997 if (chn == NULL) 1998 ret = EINVAL; 1999 else { 2000 struct snd_dbuf *bs; 2001 /* int tmp; */ 2002 2003 oss_count_t *oc = (oss_count_t *)arg; 2004 2005 CHN_LOCK(chn); 2006 bs = chn->bufsoft; 2007 #if 0 2008 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 2009 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 2010 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 2011 #else 2012 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 2013 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 2014 #endif 2015 CHN_UNLOCK(chn); 2016 } 2017 break; 2018 2019 case SNDCTL_DSP_HALT_OUTPUT: 2020 case SNDCTL_DSP_HALT_INPUT: 2021 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 2022 if (chn == NULL) 2023 ret = EINVAL; 2024 else { 2025 CHN_LOCK(chn); 2026 chn_abort(chn); 2027 CHN_UNLOCK(chn); 2028 } 2029 break; 2030 2031 case SNDCTL_DSP_LOW_WATER: 2032 /* 2033 * Set the number of bytes required to attract attention by 2034 * select/poll. 2035 */ 2036 if (wrch != NULL) { 2037 CHN_LOCK(wrch); 2038 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 2039 CHN_UNLOCK(wrch); 2040 } 2041 if (rdch != NULL) { 2042 CHN_LOCK(rdch); 2043 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2044 CHN_UNLOCK(rdch); 2045 } 2046 break; 2047 2048 case SNDCTL_DSP_GETERROR: 2049 /* 2050 * OSSv4 docs: "All errors and counters will automatically be 2051 * cleared to zeroes after the call so each call will return only 2052 * the errors that occurred after the previous invocation. ... The 2053 * play_underruns and rec_overrun fields are the only useful fields 2054 * returned by OSS 4.0." 2055 */ 2056 { 2057 audio_errinfo *ei = (audio_errinfo *)arg; 2058 2059 bzero((void *)ei, sizeof(*ei)); 2060 2061 if (wrch != NULL) { 2062 CHN_LOCK(wrch); 2063 ei->play_underruns = wrch->xruns; 2064 wrch->xruns = 0; 2065 CHN_UNLOCK(wrch); 2066 } 2067 if (rdch != NULL) { 2068 CHN_LOCK(rdch); 2069 ei->rec_overruns = rdch->xruns; 2070 rdch->xruns = 0; 2071 CHN_UNLOCK(rdch); 2072 } 2073 } 2074 break; 2075 2076 case SNDCTL_DSP_SYNCGROUP: 2077 PCM_ACQUIRE_QUICK(d); 2078 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2079 PCM_RELEASE_QUICK(d); 2080 break; 2081 2082 case SNDCTL_DSP_SYNCSTART: 2083 PCM_ACQUIRE_QUICK(d); 2084 ret = dsp_oss_syncstart(*arg_i); 2085 PCM_RELEASE_QUICK(d); 2086 break; 2087 2088 case SNDCTL_DSP_POLICY: 2089 PCM_ACQUIRE_QUICK(d); 2090 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2091 PCM_RELEASE_QUICK(d); 2092 break; 2093 2094 case SNDCTL_DSP_COOKEDMODE: 2095 PCM_ACQUIRE_QUICK(d); 2096 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2097 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2098 PCM_RELEASE_QUICK(d); 2099 break; 2100 case SNDCTL_DSP_GET_CHNORDER: 2101 PCM_ACQUIRE_QUICK(d); 2102 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2103 PCM_RELEASE_QUICK(d); 2104 break; 2105 case SNDCTL_DSP_SET_CHNORDER: 2106 PCM_ACQUIRE_QUICK(d); 2107 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2108 PCM_RELEASE_QUICK(d); 2109 break; 2110 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2111 PCM_ACQUIRE_QUICK(d); 2112 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2113 PCM_RELEASE_QUICK(d); 2114 break; 2115 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2116 ret = EINVAL; 2117 break; 2118 #ifdef OSSV4_EXPERIMENT 2119 /* 2120 * XXX The following ioctls are not yet supported and just return 2121 * EINVAL. 2122 */ 2123 case SNDCTL_DSP_GETOPEAKS: 2124 case SNDCTL_DSP_GETIPEAKS: 2125 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2126 if (chn == NULL) 2127 ret = EINVAL; 2128 else { 2129 oss_peaks_t *op = (oss_peaks_t *)arg; 2130 int lpeak, rpeak; 2131 2132 CHN_LOCK(chn); 2133 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2134 if (ret == -1) 2135 ret = EINVAL; 2136 else { 2137 (*op)[0] = lpeak; 2138 (*op)[1] = rpeak; 2139 } 2140 CHN_UNLOCK(chn); 2141 } 2142 break; 2143 2144 /* 2145 * XXX Once implemented, revisit this for proper cv protection 2146 * (if necessary). 2147 */ 2148 case SNDCTL_GETLABEL: 2149 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2150 break; 2151 case SNDCTL_SETLABEL: 2152 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2153 break; 2154 case SNDCTL_GETSONG: 2155 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2156 break; 2157 case SNDCTL_SETSONG: 2158 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2159 break; 2160 case SNDCTL_SETNAME: 2161 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2162 break; 2163 #if 0 2164 /** 2165 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2166 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2167 * 4Front Technologies. 2168 */ 2169 case SNDCTL_DSP_READCTL: 2170 case SNDCTL_DSP_WRITECTL: 2171 ret = EINVAL; 2172 break; 2173 #endif /* !0 (explicitly omitted ioctls) */ 2174 2175 #endif /* !OSSV4_EXPERIMENT */ 2176 case SNDCTL_DSP_MAPINBUF: 2177 case SNDCTL_DSP_MAPOUTBUF: 2178 case SNDCTL_DSP_SETSYNCRO: 2179 /* undocumented */ 2180 2181 case SNDCTL_DSP_SUBDIVIDE: 2182 case SOUND_PCM_WRITE_FILTER: 2183 case SOUND_PCM_READ_FILTER: 2184 /* dunno what these do, don't sound important */ 2185 2186 default: 2187 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2188 ret = EINVAL; 2189 break; 2190 } 2191 2192 PCM_GIANT_LEAVE(d); 2193 2194 return (ret); 2195 } 2196 2197 static int 2198 dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2199 { 2200 struct snddev_info *d; 2201 struct pcm_channel *wrch, *rdch; 2202 int ret, e; 2203 2204 d = dsp_get_info(i_dev); 2205 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) { 2206 /* XXX many clients don't understand POLLNVAL */ 2207 return (events & (POLLHUP | POLLPRI | POLLIN | 2208 POLLRDNORM | POLLOUT | POLLWRNORM)); 2209 } 2210 PCM_GIANT_ENTER(d); 2211 2212 wrch = NULL; 2213 rdch = NULL; 2214 ret = 0; 2215 2216 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2217 2218 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2219 e = (events & (POLLOUT | POLLWRNORM)); 2220 if (e) 2221 ret |= chn_poll(wrch, e, td); 2222 } 2223 2224 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2225 e = (events & (POLLIN | POLLRDNORM)); 2226 if (e) 2227 ret |= chn_poll(rdch, e, td); 2228 } 2229 2230 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2231 2232 PCM_GIANT_LEAVE(d); 2233 2234 return (ret); 2235 } 2236 2237 static int 2238 dsp_mmap(struct cdev *i_dev, vm_ooffset_t offset, vm_paddr_t *paddr, 2239 int nprot, vm_memattr_t *memattr) 2240 { 2241 2242 /* 2243 * offset is in range due to checks in dsp_mmap_single(). 2244 * XXX memattr is not honored. 2245 */ 2246 *paddr = vtophys(offset); 2247 return (0); 2248 } 2249 2250 static int 2251 dsp_mmap_single(struct cdev *i_dev, vm_ooffset_t *offset, 2252 vm_size_t size, struct vm_object **object, int nprot) 2253 { 2254 struct snddev_info *d; 2255 struct pcm_channel *wrch, *rdch, *c; 2256 2257 /* 2258 * Reject PROT_EXEC by default. It just doesn't makes sense. 2259 * Unfortunately, we have to give up this one due to linux_mmap 2260 * changes. 2261 * 2262 * https://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2263 * 2264 */ 2265 #ifdef SV_ABI_LINUX 2266 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2267 (dsp_mmap_allow_prot_exec == 0 && 2268 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2269 #else 2270 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2271 #endif 2272 return (EINVAL); 2273 2274 /* 2275 * PROT_READ (alone) selects the input buffer. 2276 * PROT_WRITE (alone) selects the output buffer. 2277 * PROT_WRITE|PROT_READ together select the output buffer. 2278 */ 2279 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2280 return (EINVAL); 2281 2282 d = dsp_get_info(i_dev); 2283 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 2284 return (EINVAL); 2285 2286 PCM_GIANT_ENTER(d); 2287 2288 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2289 2290 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2291 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2292 (*offset + size) > sndbuf_getallocsize(c->bufsoft) || 2293 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2294 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2295 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2296 PCM_GIANT_EXIT(d); 2297 return (EINVAL); 2298 } 2299 2300 if (wrch != NULL) 2301 wrch->flags |= CHN_F_MMAP; 2302 if (rdch != NULL) 2303 rdch->flags |= CHN_F_MMAP; 2304 2305 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2306 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2307 *object = vm_pager_allocate(OBJT_DEVICE, i_dev, 2308 size, nprot, *offset, curthread->td_ucred); 2309 2310 PCM_GIANT_LEAVE(d); 2311 2312 if (*object == NULL) 2313 return (EINVAL); 2314 return (0); 2315 } 2316 2317 /* So much for dev_stdclone() */ 2318 static int 2319 dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2320 { 2321 size_t len; 2322 2323 len = strlen(namep); 2324 if (strncmp(name, namep, len) != 0) 2325 return (ENODEV); 2326 2327 name += len; 2328 2329 if (isdigit(*name) == 0) 2330 return (ENODEV); 2331 2332 len = strlen(sep); 2333 2334 if (*name == '0' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2335 return (ENODEV); 2336 2337 for (*u = 0; isdigit(*name) != 0; name++) { 2338 *u *= 10; 2339 *u += *name - '0'; 2340 if (*u > dsp_umax) 2341 return (ENODEV); 2342 } 2343 2344 if (*name == '\0') 2345 return ((use_sep == 0) ? 0 : ENODEV); 2346 2347 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2348 return (ENODEV); 2349 2350 name += len; 2351 2352 if (*name == '0' && name[1] != '\0') 2353 return (ENODEV); 2354 2355 for (*c = 0; isdigit(*name) != 0; name++) { 2356 *c *= 10; 2357 *c += *name - '0'; 2358 if (*c > dsp_cmax) 2359 return (ENODEV); 2360 } 2361 2362 if (*name != '\0') 2363 return (ENODEV); 2364 2365 return (0); 2366 } 2367 2368 static void 2369 dsp_clone(void *arg, 2370 struct ucred *cred, 2371 char *name, int namelen, struct cdev **dev) 2372 { 2373 struct snddev_info *d; 2374 struct snd_clone_entry *ce; 2375 struct pcm_channel *c; 2376 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2377 char *devname, *devcmp, *devsep; 2378 2379 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2380 2381 if (*dev != NULL) 2382 return; 2383 2384 unit = -1; 2385 cunit = -1; 2386 devtype = -1; 2387 devhw = 0; 2388 devcmax = -1; 2389 tumax = -1; 2390 devname = NULL; 2391 devsep = NULL; 2392 2393 for (i = 0; unit == -1 && 2394 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2395 devtype = dsp_cdevs[i].type; 2396 devcmp = dsp_cdevs[i].name; 2397 devsep = dsp_cdevs[i].sep; 2398 devname = dsp_cdevs[i].alias; 2399 if (devname == NULL) 2400 devname = devcmp; 2401 devhw = dsp_cdevs[i].hw; 2402 devcmax = dsp_cdevs[i].max - 1; 2403 if (strcmp(name, devcmp) == 0) { 2404 if (dsp_basename_clone != 0) 2405 unit = snd_unit; 2406 } else if (dsp_stdclone(name, devcmp, devsep, 2407 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2408 unit = -1; 2409 cunit = -1; 2410 } 2411 } 2412 2413 d = devclass_get_softc(pcm_devclass, unit); 2414 if (!PCM_REGISTERED(d) || d->clones == NULL) 2415 return; 2416 2417 /* XXX Need Giant magic entry ??? */ 2418 2419 PCM_LOCK(d); 2420 if (snd_clone_disabled(d->clones)) { 2421 PCM_UNLOCK(d); 2422 return; 2423 } 2424 2425 PCM_WAIT(d); 2426 PCM_ACQUIRE(d); 2427 PCM_UNLOCK(d); 2428 2429 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2430 2431 if (devhw != 0) { 2432 KASSERT(devcmax <= dsp_cmax, 2433 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2434 if (cunit > devcmax) { 2435 PCM_RELEASE_QUICK(d); 2436 return; 2437 } 2438 udcmask |= snd_c2unit(cunit); 2439 CHN_FOREACH(c, d, channels.pcm) { 2440 CHN_LOCK(c); 2441 if (c->unit != udcmask) { 2442 CHN_UNLOCK(c); 2443 continue; 2444 } 2445 CHN_UNLOCK(c); 2446 udcmask &= ~snd_c2unit(cunit); 2447 /* 2448 * Temporarily increase clone maxunit to overcome 2449 * vchan flexibility. 2450 * 2451 * # sysctl dev.pcm.0.play.vchans=256 2452 * dev.pcm.0.play.vchans: 1 -> 256 2453 * # cat /dev/zero > /dev/dsp0.vp255 & 2454 * [1] 17296 2455 * # sysctl dev.pcm.0.play.vchans=0 2456 * dev.pcm.0.play.vchans: 256 -> 1 2457 * # fg 2458 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2459 * ^C 2460 * # cat /dev/zero > /dev/dsp0.vp255 2461 * zsh: operation not supported: /dev/dsp0.vp255 2462 */ 2463 tumax = snd_clone_getmaxunit(d->clones); 2464 if (cunit > tumax) 2465 snd_clone_setmaxunit(d->clones, cunit); 2466 else 2467 tumax = -1; 2468 goto dsp_clone_alloc; 2469 } 2470 /* 2471 * Ok, so we're requesting unallocated vchan, but still 2472 * within maximum vchan limit. 2473 */ 2474 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2475 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2476 cunit < snd_maxautovchans) { 2477 udcmask &= ~snd_c2unit(cunit); 2478 tumax = snd_clone_getmaxunit(d->clones); 2479 if (cunit > tumax) 2480 snd_clone_setmaxunit(d->clones, cunit); 2481 else 2482 tumax = -1; 2483 goto dsp_clone_alloc; 2484 } 2485 PCM_RELEASE_QUICK(d); 2486 return; 2487 } 2488 2489 dsp_clone_alloc: 2490 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2491 if (tumax != -1) 2492 snd_clone_setmaxunit(d->clones, tumax); 2493 if (ce != NULL) { 2494 udcmask |= snd_c2unit(cunit); 2495 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2496 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2497 devname, unit, devsep, cunit); 2498 snd_clone_register(ce, *dev); 2499 } 2500 2501 PCM_RELEASE_QUICK(d); 2502 2503 if (*dev != NULL) 2504 dev_ref(*dev); 2505 } 2506 2507 static void 2508 dsp_sysinit(void *p) 2509 { 2510 if (dsp_ehtag != NULL) 2511 return; 2512 /* initialize unit numbering */ 2513 snd_unit_init(); 2514 dsp_umax = PCMMAXUNIT; 2515 dsp_cmax = PCMMAXCHAN; 2516 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2517 } 2518 2519 static void 2520 dsp_sysuninit(void *p) 2521 { 2522 if (dsp_ehtag == NULL) 2523 return; 2524 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2525 dsp_ehtag = NULL; 2526 } 2527 2528 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2529 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2530 2531 char * 2532 dsp_unit2name(char *buf, size_t len, int unit) 2533 { 2534 int i, dtype; 2535 2536 KASSERT(buf != NULL && len != 0, 2537 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2538 2539 dtype = snd_unit2d(unit); 2540 2541 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2542 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2543 continue; 2544 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2545 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2546 return (buf); 2547 } 2548 2549 return (NULL); 2550 } 2551 2552 /** 2553 * @brief Handler for SNDCTL_AUDIOINFO. 2554 * 2555 * Gathers information about the audio device specified in ai->dev. If 2556 * ai->dev == -1, then this function gathers information about the current 2557 * device. If the call comes in on a non-audio device and ai->dev == -1, 2558 * return EINVAL. 2559 * 2560 * This routine is supposed to go practically straight to the hardware, 2561 * getting capabilities directly from the sound card driver, side-stepping 2562 * the intermediate channel interface. 2563 * 2564 * Note, however, that the usefulness of this command is significantly 2565 * decreased when requesting info about any device other than the one serving 2566 * the request. While each snddev_channel refers to a specific device node, 2567 * the converse is *not* true. Currently, when a sound device node is opened, 2568 * the sound subsystem scans for an available audio channel (or channels, if 2569 * opened in read+write) and then assigns them to the si_drv[12] private 2570 * data fields. As a result, any information returned linking a channel to 2571 * a specific character device isn't necessarily accurate. 2572 * 2573 * @note 2574 * Calling threads must not hold any snddev_info or pcm_channel locks. 2575 * 2576 * @param dev device on which the ioctl was issued 2577 * @param ai ioctl request data container 2578 * 2579 * @retval 0 success 2580 * @retval EINVAL ai->dev specifies an invalid device 2581 * 2582 * @todo Verify correctness of Doxygen tags. ;) 2583 */ 2584 int 2585 dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2586 { 2587 struct pcmchan_caps *caps; 2588 struct pcm_channel *ch; 2589 struct snddev_info *d; 2590 uint32_t fmts; 2591 int i, nchan, *rates, minch, maxch; 2592 char *devname, buf[CHN_NAMELEN]; 2593 2594 /* 2595 * If probing the device that received the ioctl, make sure it's a 2596 * DSP device. (Users may use this ioctl with /dev/mixer and 2597 * /dev/midi.) 2598 */ 2599 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2600 return (EINVAL); 2601 2602 ch = NULL; 2603 devname = NULL; 2604 nchan = 0; 2605 bzero(buf, sizeof(buf)); 2606 2607 /* 2608 * Search for the requested audio device (channel). Start by 2609 * iterating over pcm devices. 2610 */ 2611 for (i = 0; pcm_devclass != NULL && 2612 i < devclass_get_maxunit(pcm_devclass); i++) { 2613 d = devclass_get_softc(pcm_devclass, i); 2614 if (!PCM_REGISTERED(d)) 2615 continue; 2616 2617 /* XXX Need Giant magic entry ??? */ 2618 2619 /* See the note in function docblock */ 2620 PCM_UNLOCKASSERT(d); 2621 PCM_LOCK(d); 2622 2623 CHN_FOREACH(ch, d, channels.pcm) { 2624 CHN_UNLOCKASSERT(ch); 2625 CHN_LOCK(ch); 2626 if (ai->dev == -1) { 2627 if (DSP_REGISTERED(d, i_dev) && 2628 (ch == PCM_RDCH(i_dev) || /* record ch */ 2629 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2630 devname = dsp_unit2name(buf, 2631 sizeof(buf), ch->unit); 2632 } 2633 } else if (ai->dev == nchan) { 2634 devname = dsp_unit2name(buf, sizeof(buf), 2635 ch->unit); 2636 } 2637 if (devname != NULL) 2638 break; 2639 CHN_UNLOCK(ch); 2640 ++nchan; 2641 } 2642 2643 if (devname != NULL) { 2644 /* 2645 * At this point, the following synchronization stuff 2646 * has happened: 2647 * - a specific PCM device is locked. 2648 * - a specific audio channel has been locked, so be 2649 * sure to unlock when exiting; 2650 */ 2651 2652 caps = chn_getcaps(ch); 2653 2654 /* 2655 * With all handles collected, zero out the user's 2656 * container and begin filling in its fields. 2657 */ 2658 bzero((void *)ai, sizeof(oss_audioinfo)); 2659 2660 ai->dev = nchan; 2661 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2662 2663 if ((ch->flags & CHN_F_BUSY) == 0) 2664 ai->busy = 0; 2665 else 2666 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2667 2668 /** 2669 * @note 2670 * @c cmd - OSSv4 docs: "Only supported under Linux at 2671 * this moment." Cop-out, I know, but I'll save 2672 * running around in the process table for later. 2673 * Is there a risk of leaking information? 2674 */ 2675 ai->pid = ch->pid; 2676 2677 /* 2678 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2679 * Note, however, that a single channel operates in 2680 * only one direction, so PCM_CAP_DUPLEX is out. 2681 */ 2682 /** 2683 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2684 * these in pcmchan::caps? 2685 */ 2686 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2687 ((ch->flags & CHN_F_VIRTUAL) ? PCM_CAP_VIRTUAL : 0) | 2688 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2689 2690 /* 2691 * Collect formats supported @b natively by the 2692 * device. Also determine min/max channels. (I.e., 2693 * mono, stereo, or both?) 2694 * 2695 * If any channel is stereo, maxch = 2; 2696 * if all channels are stereo, minch = 2, too; 2697 * if any channel is mono, minch = 1; 2698 * and if all channels are mono, maxch = 1. 2699 */ 2700 minch = 0; 2701 maxch = 0; 2702 fmts = 0; 2703 for (i = 0; caps->fmtlist[i]; i++) { 2704 fmts |= caps->fmtlist[i]; 2705 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2706 minch = (minch == 0) ? 2 : minch; 2707 maxch = 2; 2708 } else { 2709 minch = 1; 2710 maxch = (maxch == 0) ? 1 : maxch; 2711 } 2712 } 2713 2714 if (ch->direction == PCMDIR_PLAY) 2715 ai->oformats = fmts; 2716 else 2717 ai->iformats = fmts; 2718 2719 /** 2720 * @note 2721 * @c magic - OSSv4 docs: "Reserved for internal use 2722 * by OSS." 2723 * 2724 * @par 2725 * @c card_number - OSSv4 docs: "Number of the sound 2726 * card where this device belongs or -1 if this 2727 * information is not available. Applications 2728 * should normally not use this field for any 2729 * purpose." 2730 */ 2731 ai->card_number = -1; 2732 /** 2733 * @todo @c song_name - depends first on 2734 * SNDCTL_[GS]ETSONG @todo @c label - depends 2735 * on SNDCTL_[GS]ETLABEL 2736 * @todo @c port_number - routing information? 2737 */ 2738 ai->port_number = -1; 2739 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2740 /** 2741 * @note 2742 * @c real_device - OSSv4 docs: "Obsolete." 2743 */ 2744 ai->real_device = -1; 2745 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2746 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2747 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2748 /** 2749 * @note 2750 * @c flags - OSSv4 docs: "Reserved for future use." 2751 * 2752 * @note 2753 * @c binding - OSSv4 docs: "Reserved for future use." 2754 * 2755 * @todo @c handle - haven't decided how to generate 2756 * this yet; bus, vendor, device IDs? 2757 */ 2758 ai->min_rate = caps->minspeed; 2759 ai->max_rate = caps->maxspeed; 2760 2761 ai->min_channels = minch; 2762 ai->max_channels = maxch; 2763 2764 ai->nrates = chn_getrates(ch, &rates); 2765 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2766 ai->nrates = OSS_MAX_SAMPLE_RATES; 2767 2768 for (i = 0; i < ai->nrates; i++) 2769 ai->rates[i] = rates[i]; 2770 2771 ai->next_play_engine = 0; 2772 ai->next_rec_engine = 0; 2773 2774 CHN_UNLOCK(ch); 2775 } 2776 2777 PCM_UNLOCK(d); 2778 2779 if (devname != NULL) 2780 return (0); 2781 } 2782 2783 /* Exhausted the search -- nothing is locked, so return. */ 2784 return (EINVAL); 2785 } 2786 2787 /** 2788 * @brief Assigns a PCM channel to a sync group. 2789 * 2790 * Sync groups are used to enable audio operations on multiple devices 2791 * simultaneously. They may be used with any number of devices and may 2792 * span across applications. Devices are added to groups with 2793 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2794 * SNDCTL_DSP_SYNCSTART ioctl. 2795 * 2796 * If the @c id field of the @c group parameter is set to zero, then a new 2797 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2798 * the group specified. 2799 * 2800 * @todo As far as memory allocation, should we assume that things are 2801 * okay and allocate with M_WAITOK before acquiring channel locks, 2802 * freeing later if not? 2803 * 2804 * @param wrch output channel associated w/ device (if any) 2805 * @param rdch input channel associated w/ device (if any) 2806 * @param group Sync group parameters 2807 * 2808 * @retval 0 success 2809 * @retval non-zero error to be propagated upstream 2810 */ 2811 static int 2812 dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2813 { 2814 struct pcmchan_syncmember *smrd, *smwr; 2815 struct pcmchan_syncgroup *sg; 2816 int ret, sg_ids[3]; 2817 2818 smrd = NULL; 2819 smwr = NULL; 2820 sg = NULL; 2821 ret = 0; 2822 2823 /* 2824 * Free_unr() may sleep, so store released syncgroup IDs until after 2825 * all locks are released. 2826 */ 2827 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2828 2829 PCM_SG_LOCK(); 2830 2831 /* 2832 * - Insert channel(s) into group's member list. 2833 * - Set CHN_F_NOTRIGGER on channel(s). 2834 * - Stop channel(s). 2835 */ 2836 2837 /* 2838 * If device's channels are already mapped to a group, unmap them. 2839 */ 2840 if (wrch) { 2841 CHN_LOCK(wrch); 2842 sg_ids[0] = chn_syncdestroy(wrch); 2843 } 2844 2845 if (rdch) { 2846 CHN_LOCK(rdch); 2847 sg_ids[1] = chn_syncdestroy(rdch); 2848 } 2849 2850 /* 2851 * Verify that mode matches character device properites. 2852 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2853 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2854 */ 2855 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2856 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2857 ret = EINVAL; 2858 goto out; 2859 } 2860 2861 /* 2862 * An id of zero indicates the user wants to create a new 2863 * syncgroup. 2864 */ 2865 if (group->id == 0) { 2866 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2867 if (sg != NULL) { 2868 SLIST_INIT(&sg->members); 2869 sg->id = alloc_unr(pcmsg_unrhdr); 2870 2871 group->id = sg->id; 2872 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2873 } else 2874 ret = ENOMEM; 2875 } else { 2876 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2877 if (sg->id == group->id) 2878 break; 2879 } 2880 if (sg == NULL) 2881 ret = EINVAL; 2882 } 2883 2884 /* Couldn't create or find a syncgroup. Fail. */ 2885 if (sg == NULL) 2886 goto out; 2887 2888 /* 2889 * Allocate a syncmember, assign it and a channel together, and 2890 * insert into syncgroup. 2891 */ 2892 if (group->mode & PCM_ENABLE_INPUT) { 2893 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2894 if (smrd == NULL) { 2895 ret = ENOMEM; 2896 goto out; 2897 } 2898 2899 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2900 smrd->parent = sg; 2901 smrd->ch = rdch; 2902 2903 chn_abort(rdch); 2904 rdch->flags |= CHN_F_NOTRIGGER; 2905 rdch->sm = smrd; 2906 } 2907 2908 if (group->mode & PCM_ENABLE_OUTPUT) { 2909 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2910 if (smwr == NULL) { 2911 ret = ENOMEM; 2912 goto out; 2913 } 2914 2915 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2916 smwr->parent = sg; 2917 smwr->ch = wrch; 2918 2919 chn_abort(wrch); 2920 wrch->flags |= CHN_F_NOTRIGGER; 2921 wrch->sm = smwr; 2922 } 2923 2924 out: 2925 if (ret != 0) { 2926 if (smrd != NULL) 2927 free(smrd, M_DEVBUF); 2928 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2929 sg_ids[2] = sg->id; 2930 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2931 free(sg, M_DEVBUF); 2932 } 2933 2934 if (wrch) 2935 wrch->sm = NULL; 2936 if (rdch) 2937 rdch->sm = NULL; 2938 } 2939 2940 if (wrch) 2941 CHN_UNLOCK(wrch); 2942 if (rdch) 2943 CHN_UNLOCK(rdch); 2944 2945 PCM_SG_UNLOCK(); 2946 2947 if (sg_ids[0]) 2948 free_unr(pcmsg_unrhdr, sg_ids[0]); 2949 if (sg_ids[1]) 2950 free_unr(pcmsg_unrhdr, sg_ids[1]); 2951 if (sg_ids[2]) 2952 free_unr(pcmsg_unrhdr, sg_ids[2]); 2953 2954 return (ret); 2955 } 2956 2957 /** 2958 * @brief Launch a sync group into action 2959 * 2960 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2961 * iterates over all members, triggering them along the way. 2962 * 2963 * @note Caller must not hold any channel locks. 2964 * 2965 * @param sg_id sync group identifier 2966 * 2967 * @retval 0 success 2968 * @retval non-zero error worthy of propagating upstream to user 2969 */ 2970 static int 2971 dsp_oss_syncstart(int sg_id) 2972 { 2973 struct pcmchan_syncmember *sm, *sm_tmp; 2974 struct pcmchan_syncgroup *sg; 2975 struct pcm_channel *c; 2976 int ret, needlocks; 2977 2978 /* Get the synclists lock */ 2979 PCM_SG_LOCK(); 2980 2981 do { 2982 ret = 0; 2983 needlocks = 0; 2984 2985 /* Search for syncgroup by ID */ 2986 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2987 if (sg->id == sg_id) 2988 break; 2989 } 2990 2991 /* Return EINVAL if not found */ 2992 if (sg == NULL) { 2993 ret = EINVAL; 2994 break; 2995 } 2996 2997 /* Any removals resulting in an empty group should've handled this */ 2998 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2999 3000 /* 3001 * Attempt to lock all member channels - if any are already 3002 * locked, unlock those acquired, sleep for a bit, and try 3003 * again. 3004 */ 3005 SLIST_FOREACH(sm, &sg->members, link) { 3006 if (CHN_TRYLOCK(sm->ch) == 0) { 3007 int timo = hz * 5/1000; 3008 if (timo < 1) 3009 timo = 1; 3010 3011 /* Release all locked channels so far, retry */ 3012 SLIST_FOREACH(sm_tmp, &sg->members, link) { 3013 /* sm is the member already locked */ 3014 if (sm == sm_tmp) 3015 break; 3016 CHN_UNLOCK(sm_tmp->ch); 3017 } 3018 3019 /** @todo Is PRIBIO correct/ */ 3020 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 3021 PRIBIO | PCATCH, "pcmsg", timo); 3022 if (ret == EINTR || ret == ERESTART) 3023 break; 3024 3025 needlocks = 1; 3026 ret = 0; /* Assumes ret == EAGAIN... */ 3027 } 3028 } 3029 } while (needlocks && ret == 0); 3030 3031 /* Proceed only if no errors encountered. */ 3032 if (ret == 0) { 3033 /* Launch channels */ 3034 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 3035 SLIST_REMOVE_HEAD(&sg->members, link); 3036 3037 c = sm->ch; 3038 c->sm = NULL; 3039 chn_start(c, 1); 3040 c->flags &= ~CHN_F_NOTRIGGER; 3041 CHN_UNLOCK(c); 3042 3043 free(sm, M_DEVBUF); 3044 } 3045 3046 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3047 free(sg, M_DEVBUF); 3048 } 3049 3050 PCM_SG_UNLOCK(); 3051 3052 /* 3053 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3054 * first. 3055 */ 3056 if (ret == 0) 3057 free_unr(pcmsg_unrhdr, sg_id); 3058 3059 return (ret); 3060 } 3061 3062 /** 3063 * @brief Handler for SNDCTL_DSP_POLICY 3064 * 3065 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3066 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3067 * specifying those two parameters, s/he simply selects a number from 0..10 3068 * which corresponds to a buffer size. Smaller numbers request smaller 3069 * buffers with lower latencies (at greater overhead from more frequent 3070 * interrupts), while greater numbers behave in the opposite manner. 3071 * 3072 * The 4Front spec states that a value of 5 should be the default. However, 3073 * this implementation deviates slightly by using a linear scale without 3074 * consulting drivers. I.e., even though drivers may have different default 3075 * buffer sizes, a policy argument of 5 will have the same result across 3076 * all drivers. 3077 * 3078 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3079 * more information. 3080 * 3081 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3082 * work with hardware drivers directly. 3083 * 3084 * @note PCM channel arguments must not be locked by caller. 3085 * 3086 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3087 * @param rdch " recording channel (optional; may be NULL) 3088 * @param policy Integer from [0:10] 3089 * 3090 * @retval 0 constant (for now) 3091 */ 3092 static int 3093 dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3094 { 3095 int ret; 3096 3097 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3098 return (EIO); 3099 3100 /* Default: success */ 3101 ret = 0; 3102 3103 if (rdch) { 3104 CHN_LOCK(rdch); 3105 ret = chn_setlatency(rdch, policy); 3106 CHN_UNLOCK(rdch); 3107 } 3108 3109 if (wrch && ret == 0) { 3110 CHN_LOCK(wrch); 3111 ret = chn_setlatency(wrch, policy); 3112 CHN_UNLOCK(wrch); 3113 } 3114 3115 if (ret) 3116 ret = EIO; 3117 3118 return (ret); 3119 } 3120 3121 /** 3122 * @brief Enable or disable "cooked" mode 3123 * 3124 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3125 * is the default, the sound system handles rate and format conversions 3126 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3127 * operates with 44100Hz/16bit/signed samples). 3128 * 3129 * Disabling cooked mode is intended for applications wanting to mmap() 3130 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3131 * feeder architecture, presumably to gain as much control over audio 3132 * hardware as possible. 3133 * 3134 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3135 * for more details. 3136 * 3137 * @param wrch playback channel (optional; may be NULL) 3138 * @param rdch recording channel (optional; may be NULL) 3139 * @param enabled 0 = raw mode, 1 = cooked mode 3140 * 3141 * @retval EINVAL Operation not yet supported. 3142 */ 3143 static int 3144 dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3145 { 3146 3147 /* 3148 * XXX I just don't get it. Why don't they call it 3149 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3150 * This is just plain so confusing, incoherent, 3151 * <insert any non-printable characters here>. 3152 */ 3153 if (!(enabled == 1 || enabled == 0)) 3154 return (EINVAL); 3155 3156 /* 3157 * I won't give in. I'm inverting its logic here and now. 3158 * Brag all you want, but "BITPERFECT" should be the better 3159 * term here. 3160 */ 3161 enabled ^= 0x00000001; 3162 3163 if (wrch != NULL) { 3164 CHN_LOCK(wrch); 3165 wrch->flags &= ~CHN_F_BITPERFECT; 3166 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3167 CHN_UNLOCK(wrch); 3168 } 3169 3170 if (rdch != NULL) { 3171 CHN_LOCK(rdch); 3172 rdch->flags &= ~CHN_F_BITPERFECT; 3173 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3174 CHN_UNLOCK(rdch); 3175 } 3176 3177 return (0); 3178 } 3179 3180 /** 3181 * @brief Retrieve channel interleaving order 3182 * 3183 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3184 * 3185 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3186 * for more details. 3187 * 3188 * @note As the ioctl definition is still under construction, FreeBSD 3189 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3190 * 3191 * @param wrch playback channel (optional; may be NULL) 3192 * @param rdch recording channel (optional; may be NULL) 3193 * @param map channel map (result will be stored there) 3194 * 3195 * @retval EINVAL Operation not yet supported. 3196 */ 3197 static int 3198 dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3199 { 3200 struct pcm_channel *ch; 3201 int ret; 3202 3203 ch = (wrch != NULL) ? wrch : rdch; 3204 if (ch != NULL) { 3205 CHN_LOCK(ch); 3206 ret = chn_oss_getorder(ch, map); 3207 CHN_UNLOCK(ch); 3208 } else 3209 ret = EINVAL; 3210 3211 return (ret); 3212 } 3213 3214 /** 3215 * @brief Specify channel interleaving order 3216 * 3217 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3218 * 3219 * @note As the ioctl definition is still under construction, FreeBSD 3220 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3221 * 3222 * @param wrch playback channel (optional; may be NULL) 3223 * @param rdch recording channel (optional; may be NULL) 3224 * @param map channel map 3225 * 3226 * @retval EINVAL Operation not yet supported. 3227 */ 3228 static int 3229 dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3230 { 3231 int ret; 3232 3233 ret = 0; 3234 3235 if (wrch != NULL) { 3236 CHN_LOCK(wrch); 3237 ret = chn_oss_setorder(wrch, map); 3238 CHN_UNLOCK(wrch); 3239 } 3240 3241 if (ret == 0 && rdch != NULL) { 3242 CHN_LOCK(rdch); 3243 ret = chn_oss_setorder(rdch, map); 3244 CHN_UNLOCK(rdch); 3245 } 3246 3247 return (ret); 3248 } 3249 3250 static int 3251 dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3252 int *mask) 3253 { 3254 struct pcm_channel *ch; 3255 uint32_t chnmask; 3256 int ret; 3257 3258 chnmask = 0; 3259 ch = (wrch != NULL) ? wrch : rdch; 3260 3261 if (ch != NULL) { 3262 CHN_LOCK(ch); 3263 ret = chn_oss_getmask(ch, &chnmask); 3264 CHN_UNLOCK(ch); 3265 } else 3266 ret = EINVAL; 3267 3268 if (ret == 0) 3269 *mask = chnmask; 3270 3271 return (ret); 3272 } 3273 3274 #ifdef OSSV4_EXPERIMENT 3275 /** 3276 * @brief Retrieve an audio device's label 3277 * 3278 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3279 * 3280 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3281 * for more details. 3282 * 3283 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3284 * consoles) can show variable "labels" for certain controls. By default 3285 * the application name (say quake) is shown as the label but 3286 * applications may change the labels themselves." 3287 * 3288 * @note As the ioctl definition is still under construction, FreeBSD 3289 * does not currently support @c SNDCTL_GETLABEL. 3290 * 3291 * @param wrch playback channel (optional; may be NULL) 3292 * @param rdch recording channel (optional; may be NULL) 3293 * @param label label gets copied here 3294 * 3295 * @retval EINVAL Operation not yet supported. 3296 */ 3297 static int 3298 dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3299 { 3300 return (EINVAL); 3301 } 3302 3303 /** 3304 * @brief Specify an audio device's label 3305 * 3306 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3307 * comments for @c dsp_oss_getlabel immediately above. 3308 * 3309 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3310 * for more details. 3311 * 3312 * @note As the ioctl definition is still under construction, FreeBSD 3313 * does not currently support SNDCTL_SETLABEL. 3314 * 3315 * @param wrch playback channel (optional; may be NULL) 3316 * @param rdch recording channel (optional; may be NULL) 3317 * @param label label gets copied from here 3318 * 3319 * @retval EINVAL Operation not yet supported. 3320 */ 3321 static int 3322 dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3323 { 3324 return (EINVAL); 3325 } 3326 3327 /** 3328 * @brief Retrieve name of currently played song 3329 * 3330 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3331 * tell the system the name of the currently playing song, which would be 3332 * visible in @c /dev/sndstat. 3333 * 3334 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3335 * for more details. 3336 * 3337 * @note As the ioctl definition is still under construction, FreeBSD 3338 * does not currently support SNDCTL_GETSONG. 3339 * 3340 * @param wrch playback channel (optional; may be NULL) 3341 * @param rdch recording channel (optional; may be NULL) 3342 * @param song song name gets copied here 3343 * 3344 * @retval EINVAL Operation not yet supported. 3345 */ 3346 static int 3347 dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3348 { 3349 return (EINVAL); 3350 } 3351 3352 /** 3353 * @brief Retrieve name of currently played song 3354 * 3355 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3356 * tell the system the name of the currently playing song, which would be 3357 * visible in @c /dev/sndstat. 3358 * 3359 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3360 * for more details. 3361 * 3362 * @note As the ioctl definition is still under construction, FreeBSD 3363 * does not currently support SNDCTL_SETSONG. 3364 * 3365 * @param wrch playback channel (optional; may be NULL) 3366 * @param rdch recording channel (optional; may be NULL) 3367 * @param song song name gets copied from here 3368 * 3369 * @retval EINVAL Operation not yet supported. 3370 */ 3371 static int 3372 dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3373 { 3374 return (EINVAL); 3375 } 3376 3377 /** 3378 * @brief Rename a device 3379 * 3380 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3381 * 3382 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3383 * more details. 3384 * 3385 * From Hannu@4Front: "This call is used to change the device name 3386 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3387 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3388 * name depending on the current context (for example 'OSS virtual wave table 3389 * synth' or 'VoIP link to London')." 3390 * 3391 * @note As the ioctl definition is still under construction, FreeBSD 3392 * does not currently support SNDCTL_SETNAME. 3393 * 3394 * @param wrch playback channel (optional; may be NULL) 3395 * @param rdch recording channel (optional; may be NULL) 3396 * @param name new device name gets copied from here 3397 * 3398 * @retval EINVAL Operation not yet supported. 3399 */ 3400 static int 3401 dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3402 { 3403 return (EINVAL); 3404 } 3405 #endif /* !OSSV4_EXPERIMENT */ 3406