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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pcm/dsp.c
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 5 * Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006 6 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifdef HAVE_KERNEL_OPTION_HEADERS 32 #include "opt_snd.h" 33 #endif 34 35 #include <dev/sound/pcm/sound.h> 36 #include <sys/ctype.h> 37 #include <sys/lock.h> 38 #include <sys/rwlock.h> 39 #include <sys/sysent.h> 40 41 #include <vm/vm.h> 42 #include <vm/vm_object.h> 43 #include <vm/vm_page.h> 44 #include <vm/vm_pager.h> 45 46 SND_DECLARE_FILE("$FreeBSD$"); 47 48 static int dsp_mmap_allow_prot_exec = 0; 49 SYSCTL_INT(_hw_snd, OID_AUTO, compat_linux_mmap, CTLFLAG_RWTUN, 50 &dsp_mmap_allow_prot_exec, 0, 51 "linux mmap compatibility (-1=force disable 0=auto 1=force enable)"); 52 53 static int dsp_basename_clone = 1; 54 SYSCTL_INT(_hw_snd, OID_AUTO, basename_clone, CTLFLAG_RWTUN, 55 &dsp_basename_clone, 0, 56 "DSP basename cloning (0: Disable; 1: Enabled)"); 57 58 struct dsp_cdevinfo { 59 struct pcm_channel *rdch, *wrch; 60 struct pcm_channel *volch; 61 int busy, simplex; 62 TAILQ_ENTRY(dsp_cdevinfo) link; 63 }; 64 65 #define PCM_RDCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->rdch) 66 #define PCM_WRCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->wrch) 67 #define PCM_VOLCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->volch) 68 #define PCM_SIMPLEX(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->simplex) 69 70 #define DSP_CDEVINFO_CACHESIZE 8 71 72 #define DSP_REGISTERED(x, y) (PCM_REGISTERED(x) && \ 73 (y) != NULL && (y)->si_drv1 != NULL) 74 75 #define OLDPCM_IOCTL 76 77 static d_open_t dsp_open; 78 static d_close_t dsp_close; 79 static d_read_t dsp_read; 80 static d_write_t dsp_write; 81 static d_ioctl_t dsp_ioctl; 82 static d_poll_t dsp_poll; 83 static d_mmap_t dsp_mmap; 84 static d_mmap_single_t dsp_mmap_single; 85 86 struct cdevsw dsp_cdevsw = { 87 .d_version = D_VERSION, 88 .d_open = dsp_open, 89 .d_close = dsp_close, 90 .d_read = dsp_read, 91 .d_write = dsp_write, 92 .d_ioctl = dsp_ioctl, 93 .d_poll = dsp_poll, 94 .d_mmap = dsp_mmap, 95 .d_mmap_single = dsp_mmap_single, 96 .d_name = "dsp", 97 }; 98 99 static eventhandler_tag dsp_ehtag = NULL; 100 static int dsp_umax = -1; 101 static int dsp_cmax = -1; 102 103 static int dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group); 104 static int dsp_oss_syncstart(int sg_id); 105 static int dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy); 106 static int dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled); 107 static int dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 108 static int dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 109 static int dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, int *mask); 110 #ifdef OSSV4_EXPERIMENT 111 static int dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 112 static int dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 113 static int dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 114 static int dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 115 static int dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name); 116 #endif 117 118 static struct snddev_info * 119 dsp_get_info(struct cdev *dev) 120 { 121 return (devclass_get_softc(pcm_devclass, PCMUNIT(dev))); 122 } 123 124 static uint32_t 125 dsp_get_flags(struct cdev *dev) 126 { 127 device_t bdev; 128 129 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 130 131 return ((bdev != NULL) ? pcm_getflags(bdev) : 0xffffffff); 132 } 133 134 static void 135 dsp_set_flags(struct cdev *dev, uint32_t flags) 136 { 137 device_t bdev; 138 139 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 140 141 if (bdev != NULL) 142 pcm_setflags(bdev, flags); 143 } 144 145 /* 146 * return the channels associated with an open device instance. 147 * lock channels specified. 148 */ 149 static int 150 getchns(struct cdev *dev, struct pcm_channel **rdch, struct pcm_channel **wrch, 151 uint32_t prio) 152 { 153 struct snddev_info *d; 154 struct pcm_channel *ch; 155 uint32_t flags; 156 157 if (PCM_SIMPLEX(dev) != 0) { 158 d = dsp_get_info(dev); 159 if (!PCM_REGISTERED(d)) 160 return (ENXIO); 161 PCM_LOCK(d); 162 PCM_WAIT(d); 163 PCM_ACQUIRE(d); 164 /* 165 * Note: order is important - 166 * pcm flags -> prio query flags -> wild guess 167 */ 168 ch = NULL; 169 flags = dsp_get_flags(dev); 170 if (flags & SD_F_PRIO_WR) { 171 ch = PCM_RDCH(dev); 172 PCM_RDCH(dev) = NULL; 173 } else if (flags & SD_F_PRIO_RD) { 174 ch = PCM_WRCH(dev); 175 PCM_WRCH(dev) = NULL; 176 } else if (prio & SD_F_PRIO_WR) { 177 ch = PCM_RDCH(dev); 178 PCM_RDCH(dev) = NULL; 179 flags |= SD_F_PRIO_WR; 180 } else if (prio & SD_F_PRIO_RD) { 181 ch = PCM_WRCH(dev); 182 PCM_WRCH(dev) = NULL; 183 flags |= SD_F_PRIO_RD; 184 } else if (PCM_WRCH(dev) != NULL) { 185 ch = PCM_RDCH(dev); 186 PCM_RDCH(dev) = NULL; 187 flags |= SD_F_PRIO_WR; 188 } else if (PCM_RDCH(dev) != NULL) { 189 ch = PCM_WRCH(dev); 190 PCM_WRCH(dev) = NULL; 191 flags |= SD_F_PRIO_RD; 192 } 193 PCM_SIMPLEX(dev) = 0; 194 dsp_set_flags(dev, flags); 195 if (ch != NULL) { 196 CHN_LOCK(ch); 197 pcm_chnref(ch, -1); 198 pcm_chnrelease(ch); 199 } 200 PCM_RELEASE(d); 201 PCM_UNLOCK(d); 202 } 203 204 *rdch = PCM_RDCH(dev); 205 *wrch = PCM_WRCH(dev); 206 207 if (*rdch != NULL && (prio & SD_F_PRIO_RD)) 208 CHN_LOCK(*rdch); 209 if (*wrch != NULL && (prio & SD_F_PRIO_WR)) 210 CHN_LOCK(*wrch); 211 212 return (0); 213 } 214 215 /* unlock specified channels */ 216 static void 217 relchns(struct cdev *dev, struct pcm_channel *rdch, struct pcm_channel *wrch, 218 uint32_t prio) 219 { 220 if (wrch != NULL && (prio & SD_F_PRIO_WR)) 221 CHN_UNLOCK(wrch); 222 if (rdch != NULL && (prio & SD_F_PRIO_RD)) 223 CHN_UNLOCK(rdch); 224 } 225 226 static void 227 dsp_cdevinfo_alloc(struct cdev *dev, 228 struct pcm_channel *rdch, struct pcm_channel *wrch, 229 struct pcm_channel *volch) 230 { 231 struct snddev_info *d; 232 struct dsp_cdevinfo *cdi; 233 int simplex; 234 235 d = dsp_get_info(dev); 236 237 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 == NULL && 238 ((rdch == NULL && wrch == NULL) || rdch != wrch), 239 ("bogus %s(), what are you trying to accomplish here?", __func__)); 240 PCM_BUSYASSERT(d); 241 PCM_LOCKASSERT(d); 242 243 simplex = (dsp_get_flags(dev) & SD_F_SIMPLEX) ? 1 : 0; 244 245 /* 246 * Scan for free instance entry and put it into the end of list. 247 * Create new one if necessary. 248 */ 249 TAILQ_FOREACH(cdi, &d->dsp_cdevinfo_pool, link) { 250 if (cdi->busy != 0) 251 break; 252 cdi->rdch = rdch; 253 cdi->wrch = wrch; 254 cdi->volch = volch; 255 cdi->simplex = simplex; 256 cdi->busy = 1; 257 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 258 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 259 dev->si_drv1 = cdi; 260 return; 261 } 262 PCM_UNLOCK(d); 263 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 264 PCM_LOCK(d); 265 cdi->rdch = rdch; 266 cdi->wrch = wrch; 267 cdi->volch = volch; 268 cdi->simplex = simplex; 269 cdi->busy = 1; 270 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 271 dev->si_drv1 = cdi; 272 } 273 274 static void 275 dsp_cdevinfo_free(struct cdev *dev) 276 { 277 struct snddev_info *d; 278 struct dsp_cdevinfo *cdi, *tmp; 279 uint32_t flags; 280 int i; 281 282 d = dsp_get_info(dev); 283 284 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 != NULL && 285 PCM_RDCH(dev) == NULL && PCM_WRCH(dev) == NULL && 286 PCM_VOLCH(dev) == NULL, 287 ("bogus %s(), what are you trying to accomplish here?", __func__)); 288 PCM_BUSYASSERT(d); 289 PCM_LOCKASSERT(d); 290 291 cdi = dev->si_drv1; 292 dev->si_drv1 = NULL; 293 cdi->rdch = NULL; 294 cdi->wrch = NULL; 295 cdi->volch = NULL; 296 cdi->simplex = 0; 297 cdi->busy = 0; 298 299 /* 300 * Once it is free, move it back to the beginning of list for 301 * faster new entry allocation. 302 */ 303 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 304 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 305 306 /* 307 * Scan the list, cache free entries up to DSP_CDEVINFO_CACHESIZE. 308 * Reset simplex flags. 309 */ 310 flags = dsp_get_flags(dev) & ~SD_F_PRIO_SET; 311 i = DSP_CDEVINFO_CACHESIZE; 312 TAILQ_FOREACH_SAFE(cdi, &d->dsp_cdevinfo_pool, link, tmp) { 313 if (cdi->busy != 0) { 314 if (cdi->simplex == 0) { 315 if (cdi->rdch != NULL) 316 flags |= SD_F_PRIO_RD; 317 if (cdi->wrch != NULL) 318 flags |= SD_F_PRIO_WR; 319 } 320 } else { 321 if (i == 0) { 322 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 323 free(cdi, M_DEVBUF); 324 } else 325 i--; 326 } 327 } 328 dsp_set_flags(dev, flags); 329 } 330 331 void 332 dsp_cdevinfo_init(struct snddev_info *d) 333 { 334 struct dsp_cdevinfo *cdi; 335 int i; 336 337 KASSERT(d != NULL, ("NULL snddev_info")); 338 PCM_BUSYASSERT(d); 339 PCM_UNLOCKASSERT(d); 340 341 TAILQ_INIT(&d->dsp_cdevinfo_pool); 342 for (i = 0; i < DSP_CDEVINFO_CACHESIZE; i++) { 343 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 344 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 345 } 346 } 347 348 void 349 dsp_cdevinfo_flush(struct snddev_info *d) 350 { 351 struct dsp_cdevinfo *cdi, *tmp; 352 353 KASSERT(d != NULL, ("NULL snddev_info")); 354 PCM_BUSYASSERT(d); 355 PCM_UNLOCKASSERT(d); 356 357 cdi = TAILQ_FIRST(&d->dsp_cdevinfo_pool); 358 while (cdi != NULL) { 359 tmp = TAILQ_NEXT(cdi, link); 360 free(cdi, M_DEVBUF); 361 cdi = tmp; 362 } 363 TAILQ_INIT(&d->dsp_cdevinfo_pool); 364 } 365 366 /* duplex / simplex cdev type */ 367 enum { 368 DSP_CDEV_TYPE_RDONLY, /* simplex read-only (record) */ 369 DSP_CDEV_TYPE_WRONLY, /* simplex write-only (play) */ 370 DSP_CDEV_TYPE_RDWR /* duplex read, write, or both */ 371 }; 372 373 enum { 374 DSP_CDEV_VOLCTL_NONE, 375 DSP_CDEV_VOLCTL_READ, 376 DSP_CDEV_VOLCTL_WRITE 377 }; 378 379 #define DSP_F_VALID(x) ((x) & (FREAD | FWRITE)) 380 #define DSP_F_DUPLEX(x) (((x) & (FREAD | FWRITE)) == (FREAD | FWRITE)) 381 #define DSP_F_SIMPLEX(x) (!DSP_F_DUPLEX(x)) 382 #define DSP_F_READ(x) ((x) & FREAD) 383 #define DSP_F_WRITE(x) ((x) & FWRITE) 384 385 static const struct { 386 int type; 387 char *name; 388 char *sep; 389 char *alias; 390 int use_sep; 391 int hw; 392 int max; 393 int volctl; 394 uint32_t fmt, spd; 395 int query; 396 } dsp_cdevs[] = { 397 { SND_DEV_DSP, "dsp", ".", NULL, 0, 0, 0, 0, 398 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 399 DSP_CDEV_TYPE_RDWR }, 400 { SND_DEV_AUDIO, "audio", ".", NULL, 0, 0, 0, 0, 401 SND_FORMAT(AFMT_MU_LAW, 1, 0), DSP_DEFAULT_SPEED, 402 DSP_CDEV_TYPE_RDWR }, 403 { SND_DEV_DSP16, "dspW", ".", NULL, 0, 0, 0, 0, 404 SND_FORMAT(AFMT_S16_LE, 1, 0), DSP_DEFAULT_SPEED, 405 DSP_CDEV_TYPE_RDWR }, 406 { SND_DEV_DSPHW_PLAY, "dsp", ".p", NULL, 1, 1, SND_MAXHWCHAN, 1, 407 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 408 { SND_DEV_DSPHW_VPLAY, "dsp", ".vp", NULL, 1, 1, SND_MAXVCHANS, 1, 409 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 410 { SND_DEV_DSPHW_REC, "dsp", ".r", NULL, 1, 1, SND_MAXHWCHAN, 1, 411 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 412 { SND_DEV_DSPHW_VREC, "dsp", ".vr", NULL, 1, 1, SND_MAXVCHANS, 1, 413 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 414 { SND_DEV_DSPHW_CD, "dspcd", ".", NULL, 0, 0, 0, 0, 415 SND_FORMAT(AFMT_S16_LE, 2, 0), 44100, DSP_CDEV_TYPE_RDWR }, 416 /* Low priority, OSSv4 aliases. */ 417 { SND_DEV_DSP, "dsp_ac3", ".", "dsp", 0, 0, 0, 0, 418 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 419 DSP_CDEV_TYPE_RDWR }, 420 { SND_DEV_DSP, "dsp_mmap", ".", "dsp", 0, 0, 0, 0, 421 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 422 DSP_CDEV_TYPE_RDWR }, 423 { SND_DEV_DSP, "dsp_multich", ".", "dsp", 0, 0, 0, 0, 424 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 425 DSP_CDEV_TYPE_RDWR }, 426 { SND_DEV_DSP, "dsp_spdifout", ".", "dsp", 0, 0, 0, 0, 427 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 428 DSP_CDEV_TYPE_RDWR }, 429 { SND_DEV_DSP, "dsp_spdifin", ".", "dsp", 0, 0, 0, 0, 430 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 431 DSP_CDEV_TYPE_RDWR }, 432 }; 433 434 #define DSP_FIXUP_ERROR() do { \ 435 prio = dsp_get_flags(i_dev); \ 436 if (!DSP_F_VALID(flags)) \ 437 error = EINVAL; \ 438 if (!DSP_F_DUPLEX(flags) && \ 439 ((DSP_F_READ(flags) && d->reccount == 0) || \ 440 (DSP_F_WRITE(flags) && d->playcount == 0))) \ 441 error = ENOTSUP; \ 442 else if (!DSP_F_DUPLEX(flags) && (prio & SD_F_SIMPLEX) && \ 443 ((DSP_F_READ(flags) && (prio & SD_F_PRIO_WR)) || \ 444 (DSP_F_WRITE(flags) && (prio & SD_F_PRIO_RD)))) \ 445 error = EBUSY; \ 446 else if (DSP_REGISTERED(d, i_dev)) \ 447 error = EBUSY; \ 448 } while (0) 449 450 static int 451 dsp_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 452 { 453 struct pcm_channel *rdch, *wrch; 454 struct snddev_info *d; 455 uint32_t fmt, spd, prio, volctl; 456 int i, error, rderror, wrerror, devtype, wdevunit, rdevunit; 457 458 /* Kind of impossible.. */ 459 if (i_dev == NULL || td == NULL) 460 return (ENODEV); 461 462 d = dsp_get_info(i_dev); 463 if (PCM_DETACHING(d) || !PCM_REGISTERED(d)) 464 return (EBADF); 465 466 PCM_GIANT_ENTER(d); 467 468 /* Lock snddev so nobody else can monkey with it. */ 469 PCM_LOCK(d); 470 PCM_WAIT(d); 471 472 /* 473 * Try to acquire cloned device before someone else pick it. 474 * ENODEV means this is not a cloned droids. 475 */ 476 error = snd_clone_acquire(i_dev); 477 if (!(error == 0 || error == ENODEV)) { 478 DSP_FIXUP_ERROR(); 479 PCM_UNLOCK(d); 480 PCM_GIANT_EXIT(d); 481 return (error); 482 } 483 484 error = 0; 485 DSP_FIXUP_ERROR(); 486 487 if (error != 0) { 488 (void)snd_clone_release(i_dev); 489 PCM_UNLOCK(d); 490 PCM_GIANT_EXIT(d); 491 return (error); 492 } 493 494 /* 495 * That is just enough. Acquire and unlock pcm lock so 496 * the other will just have to wait until we finish doing 497 * everything. 498 */ 499 PCM_ACQUIRE(d); 500 PCM_UNLOCK(d); 501 502 devtype = PCMDEV(i_dev); 503 wdevunit = -1; 504 rdevunit = -1; 505 fmt = 0; 506 spd = 0; 507 volctl = DSP_CDEV_VOLCTL_NONE; 508 509 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 510 if (devtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 511 continue; 512 /* 513 * Volume control only valid for DSPHW devices, 514 * and it must be opened in opposite direction be it 515 * simplex or duplex. Anything else will be handled 516 * as usual. 517 */ 518 if (dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY) { 519 if (dsp_cdevs[i].volctl != 0 && 520 DSP_F_READ(flags)) { 521 volctl = DSP_CDEV_VOLCTL_WRITE; 522 flags &= ~FREAD; 523 flags |= FWRITE; 524 } 525 if (DSP_F_READ(flags)) { 526 (void)snd_clone_release(i_dev); 527 PCM_RELEASE_QUICK(d); 528 PCM_GIANT_EXIT(d); 529 return (ENOTSUP); 530 } 531 wdevunit = dev2unit(i_dev); 532 } else if (dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY) { 533 if (dsp_cdevs[i].volctl != 0 && 534 DSP_F_WRITE(flags)) { 535 volctl = DSP_CDEV_VOLCTL_READ; 536 flags &= ~FWRITE; 537 flags |= FREAD; 538 } 539 if (DSP_F_WRITE(flags)) { 540 (void)snd_clone_release(i_dev); 541 PCM_RELEASE_QUICK(d); 542 PCM_GIANT_EXIT(d); 543 return (ENOTSUP); 544 } 545 rdevunit = dev2unit(i_dev); 546 } 547 fmt = dsp_cdevs[i].fmt; 548 spd = dsp_cdevs[i].spd; 549 break; 550 } 551 552 /* No matching devtype? */ 553 if (fmt == 0 || spd == 0) 554 panic("impossible devtype %d", devtype); 555 556 rdch = NULL; 557 wrch = NULL; 558 rderror = 0; 559 wrerror = 0; 560 561 /* 562 * if we get here, the open request is valid- either: 563 * * we were previously not open 564 * * we were open for play xor record and the opener wants 565 * the non-open direction 566 */ 567 if (DSP_F_READ(flags)) { 568 /* open for read */ 569 rderror = pcm_chnalloc(d, &rdch, PCMDIR_REC, 570 td->td_proc->p_pid, td->td_proc->p_comm, rdevunit); 571 572 if (rderror == 0 && chn_reset(rdch, fmt, spd) != 0) 573 rderror = ENXIO; 574 575 if (volctl == DSP_CDEV_VOLCTL_READ) 576 rderror = 0; 577 578 if (rderror != 0) { 579 if (rdch != NULL) 580 pcm_chnrelease(rdch); 581 if (!DSP_F_DUPLEX(flags)) { 582 (void)snd_clone_release(i_dev); 583 PCM_RELEASE_QUICK(d); 584 PCM_GIANT_EXIT(d); 585 return (rderror); 586 } 587 rdch = NULL; 588 } else if (volctl == DSP_CDEV_VOLCTL_READ) { 589 if (rdch != NULL) { 590 pcm_chnref(rdch, 1); 591 pcm_chnrelease(rdch); 592 } 593 } else { 594 if (flags & O_NONBLOCK) 595 rdch->flags |= CHN_F_NBIO; 596 if (flags & O_EXCL) 597 rdch->flags |= CHN_F_EXCLUSIVE; 598 pcm_chnref(rdch, 1); 599 if (volctl == DSP_CDEV_VOLCTL_NONE) 600 chn_vpc_reset(rdch, SND_VOL_C_PCM, 0); 601 CHN_UNLOCK(rdch); 602 } 603 } 604 605 if (DSP_F_WRITE(flags)) { 606 /* open for write */ 607 wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY, 608 td->td_proc->p_pid, td->td_proc->p_comm, wdevunit); 609 610 if (wrerror == 0 && chn_reset(wrch, fmt, spd) != 0) 611 wrerror = ENXIO; 612 613 if (volctl == DSP_CDEV_VOLCTL_WRITE) 614 wrerror = 0; 615 616 if (wrerror != 0) { 617 if (wrch != NULL) 618 pcm_chnrelease(wrch); 619 if (!DSP_F_DUPLEX(flags)) { 620 if (rdch != NULL) { 621 /* 622 * Lock, deref and release previously 623 * created record channel 624 */ 625 CHN_LOCK(rdch); 626 pcm_chnref(rdch, -1); 627 pcm_chnrelease(rdch); 628 } 629 (void)snd_clone_release(i_dev); 630 PCM_RELEASE_QUICK(d); 631 PCM_GIANT_EXIT(d); 632 return (wrerror); 633 } 634 wrch = NULL; 635 } else if (volctl == DSP_CDEV_VOLCTL_WRITE) { 636 if (wrch != NULL) { 637 pcm_chnref(wrch, 1); 638 pcm_chnrelease(wrch); 639 } 640 } else { 641 if (flags & O_NONBLOCK) 642 wrch->flags |= CHN_F_NBIO; 643 if (flags & O_EXCL) 644 wrch->flags |= CHN_F_EXCLUSIVE; 645 pcm_chnref(wrch, 1); 646 if (volctl == DSP_CDEV_VOLCTL_NONE) 647 chn_vpc_reset(wrch, SND_VOL_C_PCM, 0); 648 CHN_UNLOCK(wrch); 649 } 650 } 651 652 653 PCM_LOCK(d); 654 655 /* 656 * We're done. Allocate channels information for this cdev. 657 */ 658 switch (volctl) { 659 case DSP_CDEV_VOLCTL_READ: 660 KASSERT(wrch == NULL, ("wrch=%p not null!", wrch)); 661 dsp_cdevinfo_alloc(i_dev, NULL, NULL, rdch); 662 break; 663 case DSP_CDEV_VOLCTL_WRITE: 664 KASSERT(rdch == NULL, ("rdch=%p not null!", rdch)); 665 dsp_cdevinfo_alloc(i_dev, NULL, NULL, wrch); 666 break; 667 case DSP_CDEV_VOLCTL_NONE: 668 default: 669 if (wrch == NULL && rdch == NULL) { 670 (void)snd_clone_release(i_dev); 671 PCM_RELEASE(d); 672 PCM_UNLOCK(d); 673 PCM_GIANT_EXIT(d); 674 if (wrerror != 0) 675 return (wrerror); 676 if (rderror != 0) 677 return (rderror); 678 return (EINVAL); 679 } 680 dsp_cdevinfo_alloc(i_dev, rdch, wrch, NULL); 681 if (rdch != NULL) 682 CHN_INSERT_HEAD(d, rdch, channels.pcm.opened); 683 if (wrch != NULL) 684 CHN_INSERT_HEAD(d, wrch, channels.pcm.opened); 685 break; 686 } 687 688 /* 689 * Increase clone refcount for its automatic garbage collector. 690 */ 691 (void)snd_clone_ref(i_dev); 692 693 PCM_RELEASE(d); 694 PCM_UNLOCK(d); 695 696 PCM_GIANT_LEAVE(d); 697 698 return (0); 699 } 700 701 static int 702 dsp_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 703 { 704 struct pcm_channel *rdch, *wrch, *volch; 705 struct snddev_info *d; 706 int sg_ids, rdref, wdref; 707 708 d = dsp_get_info(i_dev); 709 if (!DSP_REGISTERED(d, i_dev)) 710 return (EBADF); 711 712 PCM_GIANT_ENTER(d); 713 714 PCM_LOCK(d); 715 PCM_WAIT(d); 716 PCM_ACQUIRE(d); 717 718 rdch = PCM_RDCH(i_dev); 719 wrch = PCM_WRCH(i_dev); 720 volch = PCM_VOLCH(i_dev); 721 722 PCM_RDCH(i_dev) = NULL; 723 PCM_WRCH(i_dev) = NULL; 724 PCM_VOLCH(i_dev) = NULL; 725 726 rdref = -1; 727 wdref = -1; 728 729 if (volch != NULL) { 730 if (volch == rdch) 731 rdref--; 732 else if (volch == wrch) 733 wdref--; 734 else { 735 CHN_LOCK(volch); 736 pcm_chnref(volch, -1); 737 CHN_UNLOCK(volch); 738 } 739 } 740 741 if (rdch != NULL) 742 CHN_REMOVE(d, rdch, channels.pcm.opened); 743 if (wrch != NULL) 744 CHN_REMOVE(d, wrch, channels.pcm.opened); 745 746 if (rdch != NULL || wrch != NULL) { 747 PCM_UNLOCK(d); 748 if (rdch != NULL) { 749 /* 750 * The channel itself need not be locked because: 751 * a) Adding a channel to a syncgroup happens only 752 * in dsp_ioctl(), which cannot run concurrently 753 * to dsp_close(). 754 * b) The syncmember pointer (sm) is protected by 755 * the global syncgroup list lock. 756 * c) A channel can't just disappear, invalidating 757 * pointers, unless it's closed/dereferenced 758 * first. 759 */ 760 PCM_SG_LOCK(); 761 sg_ids = chn_syncdestroy(rdch); 762 PCM_SG_UNLOCK(); 763 if (sg_ids != 0) 764 free_unr(pcmsg_unrhdr, sg_ids); 765 766 CHN_LOCK(rdch); 767 pcm_chnref(rdch, rdref); 768 chn_abort(rdch); /* won't sleep */ 769 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 770 CHN_F_DEAD | CHN_F_EXCLUSIVE); 771 chn_reset(rdch, 0, 0); 772 pcm_chnrelease(rdch); 773 } 774 if (wrch != NULL) { 775 /* 776 * Please see block above. 777 */ 778 PCM_SG_LOCK(); 779 sg_ids = chn_syncdestroy(wrch); 780 PCM_SG_UNLOCK(); 781 if (sg_ids != 0) 782 free_unr(pcmsg_unrhdr, sg_ids); 783 784 CHN_LOCK(wrch); 785 pcm_chnref(wrch, wdref); 786 chn_flush(wrch); /* may sleep */ 787 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 788 CHN_F_DEAD | CHN_F_EXCLUSIVE); 789 chn_reset(wrch, 0, 0); 790 pcm_chnrelease(wrch); 791 } 792 PCM_LOCK(d); 793 } 794 795 dsp_cdevinfo_free(i_dev); 796 /* 797 * Release clone busy state and unref it so the automatic 798 * garbage collector will get the hint and do the remaining 799 * cleanup process. 800 */ 801 (void)snd_clone_release(i_dev); 802 803 /* 804 * destroy_dev() might sleep, so release pcm lock 805 * here and rely on pcm cv serialization. 806 */ 807 PCM_UNLOCK(d); 808 (void)snd_clone_unref(i_dev); 809 PCM_LOCK(d); 810 811 PCM_RELEASE(d); 812 PCM_UNLOCK(d); 813 814 PCM_GIANT_LEAVE(d); 815 816 return (0); 817 } 818 819 static __inline int 820 dsp_io_ops(struct cdev *i_dev, struct uio *buf) 821 { 822 struct snddev_info *d; 823 struct pcm_channel **ch, *rdch, *wrch; 824 int (*chn_io)(struct pcm_channel *, struct uio *); 825 int prio, ret; 826 pid_t runpid; 827 828 KASSERT(i_dev != NULL && buf != NULL && 829 (buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE), 830 ("%s(): io train wreck!", __func__)); 831 832 d = dsp_get_info(i_dev); 833 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 834 return (EBADF); 835 836 PCM_GIANT_ENTER(d); 837 838 switch (buf->uio_rw) { 839 case UIO_READ: 840 prio = SD_F_PRIO_RD; 841 ch = &rdch; 842 chn_io = chn_read; 843 break; 844 case UIO_WRITE: 845 prio = SD_F_PRIO_WR; 846 ch = &wrch; 847 chn_io = chn_write; 848 break; 849 default: 850 panic("invalid/corrupted uio direction: %d", buf->uio_rw); 851 break; 852 } 853 854 rdch = NULL; 855 wrch = NULL; 856 runpid = buf->uio_td->td_proc->p_pid; 857 858 getchns(i_dev, &rdch, &wrch, prio); 859 860 if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) { 861 if (rdch != NULL || wrch != NULL) 862 relchns(i_dev, rdch, wrch, prio); 863 PCM_GIANT_EXIT(d); 864 return (EBADF); 865 } 866 867 if (((*ch)->flags & (CHN_F_MMAP | CHN_F_DEAD)) || 868 (((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) { 869 relchns(i_dev, rdch, wrch, prio); 870 PCM_GIANT_EXIT(d); 871 return (EINVAL); 872 } else if (!((*ch)->flags & CHN_F_RUNNING)) { 873 (*ch)->flags |= CHN_F_RUNNING; 874 (*ch)->pid = runpid; 875 } 876 877 /* 878 * chn_read/write must give up channel lock in order to copy bytes 879 * from/to userland, so up the "in progress" counter to make sure 880 * someone else doesn't come along and muss up the buffer. 881 */ 882 ++(*ch)->inprog; 883 ret = chn_io(*ch, buf); 884 --(*ch)->inprog; 885 886 CHN_BROADCAST(&(*ch)->cv); 887 888 relchns(i_dev, rdch, wrch, prio); 889 890 PCM_GIANT_LEAVE(d); 891 892 return (ret); 893 } 894 895 static int 896 dsp_read(struct cdev *i_dev, struct uio *buf, int flag) 897 { 898 return (dsp_io_ops(i_dev, buf)); 899 } 900 901 static int 902 dsp_write(struct cdev *i_dev, struct uio *buf, int flag) 903 { 904 return (dsp_io_ops(i_dev, buf)); 905 } 906 907 static int 908 dsp_get_volume_channel(struct cdev *dev, struct pcm_channel **volch) 909 { 910 struct snddev_info *d; 911 struct pcm_channel *c; 912 int unit; 913 914 KASSERT(dev != NULL && volch != NULL, 915 ("%s(): NULL query dev=%p volch=%p", __func__, dev, volch)); 916 917 d = dsp_get_info(dev); 918 if (!PCM_REGISTERED(d)) { 919 *volch = NULL; 920 return (EINVAL); 921 } 922 923 PCM_UNLOCKASSERT(d); 924 925 *volch = NULL; 926 927 c = PCM_VOLCH(dev); 928 if (c != NULL) { 929 if (!(c->feederflags & (1 << FEEDER_VOLUME))) 930 return (-1); 931 *volch = c; 932 return (0); 933 } 934 935 PCM_LOCK(d); 936 PCM_WAIT(d); 937 PCM_ACQUIRE(d); 938 939 unit = dev2unit(dev); 940 941 CHN_FOREACH(c, d, channels.pcm) { 942 CHN_LOCK(c); 943 if (c->unit != unit) { 944 CHN_UNLOCK(c); 945 continue; 946 } 947 *volch = c; 948 pcm_chnref(c, 1); 949 PCM_VOLCH(dev) = c; 950 CHN_UNLOCK(c); 951 PCM_RELEASE(d); 952 PCM_UNLOCK(d); 953 return ((c->feederflags & (1 << FEEDER_VOLUME)) ? 0 : -1); 954 } 955 956 PCM_RELEASE(d); 957 PCM_UNLOCK(d); 958 959 return (EINVAL); 960 } 961 962 static int 963 dsp_ioctl_channel(struct cdev *dev, struct pcm_channel *volch, u_long cmd, 964 caddr_t arg) 965 { 966 struct snddev_info *d; 967 struct pcm_channel *rdch, *wrch; 968 int j, devtype, ret; 969 970 d = dsp_get_info(dev); 971 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 972 return (-1); 973 974 PCM_UNLOCKASSERT(d); 975 976 j = cmd & 0xff; 977 978 rdch = PCM_RDCH(dev); 979 wrch = PCM_WRCH(dev); 980 981 /* No specific channel, look into cache */ 982 if (volch == NULL) 983 volch = PCM_VOLCH(dev); 984 985 /* Look harder */ 986 if (volch == NULL) { 987 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 988 volch = rdch; 989 else if (j == SOUND_MIXER_PCM && wrch != NULL) 990 volch = wrch; 991 } 992 993 devtype = PCMDEV(dev); 994 995 /* Look super harder */ 996 if (volch == NULL && 997 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 998 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 999 ret = dsp_get_volume_channel(dev, &volch); 1000 if (ret != 0) 1001 return (ret); 1002 if (volch == NULL) 1003 return (EINVAL); 1004 } 1005 1006 /* Final validation */ 1007 if (volch != NULL) { 1008 CHN_LOCK(volch); 1009 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 1010 CHN_UNLOCK(volch); 1011 return (-1); 1012 } 1013 if (volch->direction == PCMDIR_PLAY) 1014 wrch = volch; 1015 else 1016 rdch = volch; 1017 } 1018 1019 ret = EINVAL; 1020 1021 if (volch != NULL && 1022 ((j == SOUND_MIXER_PCM && volch->direction == PCMDIR_PLAY) || 1023 (j == SOUND_MIXER_RECLEV && volch->direction == PCMDIR_REC))) { 1024 if ((cmd & ~0xff) == MIXER_WRITE(0)) { 1025 int left, right, center; 1026 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, left, right, 1031 center); 1032 } else if ((cmd & ~0xff) == MIXER_READ(0)) { 1033 *(int *)arg = CHN_GETVOLUME(volch, 1034 SND_VOL_C_PCM, SND_CHN_T_FL); 1035 *(int *)arg |= CHN_GETVOLUME(volch, 1036 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1037 } 1038 ret = 0; 1039 } else if (rdch != NULL || wrch != NULL) { 1040 switch (j) { 1041 case SOUND_MIXER_DEVMASK: 1042 case SOUND_MIXER_CAPS: 1043 case SOUND_MIXER_STEREODEVS: 1044 if ((cmd & ~0xff) == MIXER_READ(0)) { 1045 *(int *)arg = 0; 1046 if (rdch != NULL) 1047 *(int *)arg |= SOUND_MASK_RECLEV; 1048 if (wrch != NULL) 1049 *(int *)arg |= SOUND_MASK_PCM; 1050 } 1051 ret = 0; 1052 break; 1053 case SOUND_MIXER_RECMASK: 1054 case SOUND_MIXER_RECSRC: 1055 if ((cmd & ~0xff) == MIXER_READ(0)) 1056 *(int *)arg = 0; 1057 ret = 0; 1058 break; 1059 default: 1060 break; 1061 } 1062 } 1063 1064 if (volch != NULL) 1065 CHN_UNLOCK(volch); 1066 1067 return (ret); 1068 } 1069 1070 static int 1071 dsp_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1072 struct thread *td) 1073 { 1074 struct pcm_channel *chn, *rdch, *wrch; 1075 struct snddev_info *d; 1076 u_long xcmd; 1077 int *arg_i, ret, tmp; 1078 1079 d = dsp_get_info(i_dev); 1080 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 1081 return (EBADF); 1082 1083 PCM_GIANT_ENTER(d); 1084 1085 arg_i = (int *)arg; 1086 ret = 0; 1087 xcmd = 0; 1088 chn = NULL; 1089 1090 if (IOCGROUP(cmd) == 'M') { 1091 if (cmd == OSS_GETVERSION) { 1092 *arg_i = SOUND_VERSION; 1093 PCM_GIANT_EXIT(d); 1094 return (0); 1095 } 1096 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1097 if (ret != -1) { 1098 PCM_GIANT_EXIT(d); 1099 return (ret); 1100 } 1101 1102 if (d->mixer_dev != NULL) { 1103 PCM_ACQUIRE_QUICK(d); 1104 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1105 MIXER_CMD_DIRECT); 1106 PCM_RELEASE_QUICK(d); 1107 } else 1108 ret = EBADF; 1109 1110 PCM_GIANT_EXIT(d); 1111 1112 return (ret); 1113 } 1114 1115 /* 1116 * Certain ioctls may be made on any type of device (audio, mixer, 1117 * and MIDI). Handle those special cases here. 1118 */ 1119 if (IOCGROUP(cmd) == 'X') { 1120 PCM_ACQUIRE_QUICK(d); 1121 switch(cmd) { 1122 case SNDCTL_SYSINFO: 1123 sound_oss_sysinfo((oss_sysinfo *)arg); 1124 break; 1125 case SNDCTL_CARDINFO: 1126 ret = sound_oss_card_info((oss_card_info *)arg); 1127 break; 1128 case SNDCTL_AUDIOINFO: 1129 case SNDCTL_AUDIOINFO_EX: 1130 case SNDCTL_ENGINEINFO: 1131 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1132 break; 1133 case SNDCTL_MIXERINFO: 1134 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1135 break; 1136 default: 1137 ret = EINVAL; 1138 } 1139 PCM_RELEASE_QUICK(d); 1140 PCM_GIANT_EXIT(d); 1141 return (ret); 1142 } 1143 1144 getchns(i_dev, &rdch, &wrch, 0); 1145 1146 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1147 wrch = NULL; 1148 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1149 rdch = NULL; 1150 1151 if (wrch == NULL && rdch == NULL) { 1152 PCM_GIANT_EXIT(d); 1153 return (EINVAL); 1154 } 1155 1156 switch(cmd) { 1157 #ifdef OLDPCM_IOCTL 1158 /* 1159 * we start with the new ioctl interface. 1160 */ 1161 case AIONWRITE: /* how many bytes can write ? */ 1162 if (wrch) { 1163 CHN_LOCK(wrch); 1164 /* 1165 if (wrch && wrch->bufhard.dl) 1166 while (chn_wrfeed(wrch) == 0); 1167 */ 1168 *arg_i = sndbuf_getfree(wrch->bufsoft); 1169 CHN_UNLOCK(wrch); 1170 } else { 1171 *arg_i = 0; 1172 ret = EINVAL; 1173 } 1174 break; 1175 1176 case AIOSSIZE: /* set the current blocksize */ 1177 { 1178 struct snd_size *p = (struct snd_size *)arg; 1179 1180 p->play_size = 0; 1181 p->rec_size = 0; 1182 PCM_ACQUIRE_QUICK(d); 1183 if (wrch) { 1184 CHN_LOCK(wrch); 1185 chn_setblocksize(wrch, 2, p->play_size); 1186 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1187 CHN_UNLOCK(wrch); 1188 } 1189 if (rdch) { 1190 CHN_LOCK(rdch); 1191 chn_setblocksize(rdch, 2, p->rec_size); 1192 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1193 CHN_UNLOCK(rdch); 1194 } 1195 PCM_RELEASE_QUICK(d); 1196 } 1197 break; 1198 case AIOGSIZE: /* get the current blocksize */ 1199 { 1200 struct snd_size *p = (struct snd_size *)arg; 1201 1202 if (wrch) { 1203 CHN_LOCK(wrch); 1204 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1205 CHN_UNLOCK(wrch); 1206 } 1207 if (rdch) { 1208 CHN_LOCK(rdch); 1209 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1210 CHN_UNLOCK(rdch); 1211 } 1212 } 1213 break; 1214 1215 case AIOSFMT: 1216 case AIOGFMT: 1217 { 1218 snd_chan_param *p = (snd_chan_param *)arg; 1219 1220 if (cmd == AIOSFMT && 1221 ((p->play_format != 0 && p->play_rate == 0) || 1222 (p->rec_format != 0 && p->rec_rate == 0))) { 1223 ret = EINVAL; 1224 break; 1225 } 1226 PCM_ACQUIRE_QUICK(d); 1227 if (wrch) { 1228 CHN_LOCK(wrch); 1229 if (cmd == AIOSFMT && p->play_format != 0) { 1230 chn_setformat(wrch, 1231 SND_FORMAT(p->play_format, 1232 AFMT_CHANNEL(wrch->format), 1233 AFMT_EXTCHANNEL(wrch->format))); 1234 chn_setspeed(wrch, p->play_rate); 1235 } 1236 p->play_rate = wrch->speed; 1237 p->play_format = AFMT_ENCODING(wrch->format); 1238 CHN_UNLOCK(wrch); 1239 } else { 1240 p->play_rate = 0; 1241 p->play_format = 0; 1242 } 1243 if (rdch) { 1244 CHN_LOCK(rdch); 1245 if (cmd == AIOSFMT && p->rec_format != 0) { 1246 chn_setformat(rdch, 1247 SND_FORMAT(p->rec_format, 1248 AFMT_CHANNEL(rdch->format), 1249 AFMT_EXTCHANNEL(rdch->format))); 1250 chn_setspeed(rdch, p->rec_rate); 1251 } 1252 p->rec_rate = rdch->speed; 1253 p->rec_format = AFMT_ENCODING(rdch->format); 1254 CHN_UNLOCK(rdch); 1255 } else { 1256 p->rec_rate = 0; 1257 p->rec_format = 0; 1258 } 1259 PCM_RELEASE_QUICK(d); 1260 } 1261 break; 1262 1263 case AIOGCAP: /* get capabilities */ 1264 { 1265 snd_capabilities *p = (snd_capabilities *)arg; 1266 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1267 struct cdev *pdev; 1268 1269 PCM_LOCK(d); 1270 if (rdch) { 1271 CHN_LOCK(rdch); 1272 rcaps = chn_getcaps(rdch); 1273 } 1274 if (wrch) { 1275 CHN_LOCK(wrch); 1276 pcaps = chn_getcaps(wrch); 1277 } 1278 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1279 pcaps? pcaps->minspeed : 0); 1280 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1281 pcaps? pcaps->maxspeed : 1000000); 1282 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1283 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1284 /* XXX bad on sb16 */ 1285 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1286 (wrch? chn_getformats(wrch) : 0xffffffff); 1287 if (rdch && wrch) 1288 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1289 pdev = d->mixer_dev; 1290 p->mixers = 1; /* default: one mixer */ 1291 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1292 p->left = p->right = 100; 1293 if (wrch) 1294 CHN_UNLOCK(wrch); 1295 if (rdch) 1296 CHN_UNLOCK(rdch); 1297 PCM_UNLOCK(d); 1298 } 1299 break; 1300 1301 case AIOSTOP: 1302 if (*arg_i == AIOSYNC_PLAY && wrch) { 1303 CHN_LOCK(wrch); 1304 *arg_i = chn_abort(wrch); 1305 CHN_UNLOCK(wrch); 1306 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1307 CHN_LOCK(rdch); 1308 *arg_i = chn_abort(rdch); 1309 CHN_UNLOCK(rdch); 1310 } else { 1311 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1312 *arg_i = 0; 1313 } 1314 break; 1315 1316 case AIOSYNC: 1317 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1318 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1319 break; 1320 #endif 1321 /* 1322 * here follow the standard ioctls (filio.h etc.) 1323 */ 1324 case FIONREAD: /* get # bytes to read */ 1325 if (rdch) { 1326 CHN_LOCK(rdch); 1327 /* if (rdch && rdch->bufhard.dl) 1328 while (chn_rdfeed(rdch) == 0); 1329 */ 1330 *arg_i = sndbuf_getready(rdch->bufsoft); 1331 CHN_UNLOCK(rdch); 1332 } else { 1333 *arg_i = 0; 1334 ret = EINVAL; 1335 } 1336 break; 1337 1338 case FIOASYNC: /*set/clear async i/o */ 1339 DEB( printf("FIOASYNC\n") ; ) 1340 break; 1341 1342 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1343 case FIONBIO: /* set/clear non-blocking i/o */ 1344 if (rdch) { 1345 CHN_LOCK(rdch); 1346 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1347 rdch->flags |= CHN_F_NBIO; 1348 else 1349 rdch->flags &= ~CHN_F_NBIO; 1350 CHN_UNLOCK(rdch); 1351 } 1352 if (wrch) { 1353 CHN_LOCK(wrch); 1354 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1355 wrch->flags |= CHN_F_NBIO; 1356 else 1357 wrch->flags &= ~CHN_F_NBIO; 1358 CHN_UNLOCK(wrch); 1359 } 1360 break; 1361 1362 /* 1363 * Finally, here is the linux-compatible ioctl interface 1364 */ 1365 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1366 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1367 case SNDCTL_DSP_GETBLKSIZE: 1368 chn = wrch ? wrch : rdch; 1369 if (chn) { 1370 CHN_LOCK(chn); 1371 *arg_i = sndbuf_getblksz(chn->bufsoft); 1372 CHN_UNLOCK(chn); 1373 } else { 1374 *arg_i = 0; 1375 ret = EINVAL; 1376 } 1377 break; 1378 1379 case SNDCTL_DSP_SETBLKSIZE: 1380 RANGE(*arg_i, 16, 65536); 1381 PCM_ACQUIRE_QUICK(d); 1382 if (wrch) { 1383 CHN_LOCK(wrch); 1384 chn_setblocksize(wrch, 2, *arg_i); 1385 CHN_UNLOCK(wrch); 1386 } 1387 if (rdch) { 1388 CHN_LOCK(rdch); 1389 chn_setblocksize(rdch, 2, *arg_i); 1390 CHN_UNLOCK(rdch); 1391 } 1392 PCM_RELEASE_QUICK(d); 1393 break; 1394 1395 case SNDCTL_DSP_RESET: 1396 DEB(printf("dsp reset\n")); 1397 if (wrch) { 1398 CHN_LOCK(wrch); 1399 chn_abort(wrch); 1400 chn_resetbuf(wrch); 1401 CHN_UNLOCK(wrch); 1402 } 1403 if (rdch) { 1404 CHN_LOCK(rdch); 1405 chn_abort(rdch); 1406 chn_resetbuf(rdch); 1407 CHN_UNLOCK(rdch); 1408 } 1409 break; 1410 1411 case SNDCTL_DSP_SYNC: 1412 DEB(printf("dsp sync\n")); 1413 /* chn_sync may sleep */ 1414 if (wrch) { 1415 CHN_LOCK(wrch); 1416 chn_sync(wrch, 0); 1417 CHN_UNLOCK(wrch); 1418 } 1419 break; 1420 1421 case SNDCTL_DSP_SPEED: 1422 /* chn_setspeed may sleep */ 1423 tmp = 0; 1424 PCM_ACQUIRE_QUICK(d); 1425 if (wrch) { 1426 CHN_LOCK(wrch); 1427 ret = chn_setspeed(wrch, *arg_i); 1428 tmp = wrch->speed; 1429 CHN_UNLOCK(wrch); 1430 } 1431 if (rdch && ret == 0) { 1432 CHN_LOCK(rdch); 1433 ret = chn_setspeed(rdch, *arg_i); 1434 if (tmp == 0) 1435 tmp = rdch->speed; 1436 CHN_UNLOCK(rdch); 1437 } 1438 PCM_RELEASE_QUICK(d); 1439 *arg_i = tmp; 1440 break; 1441 1442 case SOUND_PCM_READ_RATE: 1443 chn = wrch ? wrch : rdch; 1444 if (chn) { 1445 CHN_LOCK(chn); 1446 *arg_i = chn->speed; 1447 CHN_UNLOCK(chn); 1448 } else { 1449 *arg_i = 0; 1450 ret = EINVAL; 1451 } 1452 break; 1453 1454 case SNDCTL_DSP_STEREO: 1455 tmp = -1; 1456 *arg_i = (*arg_i)? 2 : 1; 1457 PCM_ACQUIRE_QUICK(d); 1458 if (wrch) { 1459 CHN_LOCK(wrch); 1460 ret = chn_setformat(wrch, 1461 SND_FORMAT(wrch->format, *arg_i, 0)); 1462 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1463 CHN_UNLOCK(wrch); 1464 } 1465 if (rdch && ret == 0) { 1466 CHN_LOCK(rdch); 1467 ret = chn_setformat(rdch, 1468 SND_FORMAT(rdch->format, *arg_i, 0)); 1469 if (tmp == -1) 1470 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1471 CHN_UNLOCK(rdch); 1472 } 1473 PCM_RELEASE_QUICK(d); 1474 *arg_i = tmp; 1475 break; 1476 1477 case SOUND_PCM_WRITE_CHANNELS: 1478 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1479 if (*arg_i < 0) { 1480 *arg_i = 0; 1481 ret = EINVAL; 1482 break; 1483 } 1484 if (*arg_i != 0) { 1485 struct pcmchan_matrix *m; 1486 uint32_t ext; 1487 1488 tmp = 0; 1489 if (*arg_i > SND_CHN_MAX) 1490 *arg_i = SND_CHN_MAX; 1491 1492 m = feeder_matrix_default_channel_map(*arg_i); 1493 if (m != NULL) 1494 ext = m->ext; 1495 else 1496 ext = 0; 1497 1498 PCM_ACQUIRE_QUICK(d); 1499 if (wrch) { 1500 CHN_LOCK(wrch); 1501 ret = chn_setformat(wrch, 1502 SND_FORMAT(wrch->format, *arg_i, ext)); 1503 tmp = AFMT_CHANNEL(wrch->format); 1504 CHN_UNLOCK(wrch); 1505 } 1506 if (rdch && ret == 0) { 1507 CHN_LOCK(rdch); 1508 ret = chn_setformat(rdch, 1509 SND_FORMAT(rdch->format, *arg_i, ext)); 1510 if (tmp == 0) 1511 tmp = AFMT_CHANNEL(rdch->format); 1512 CHN_UNLOCK(rdch); 1513 } 1514 PCM_RELEASE_QUICK(d); 1515 *arg_i = tmp; 1516 } else { 1517 chn = wrch ? wrch : rdch; 1518 CHN_LOCK(chn); 1519 *arg_i = AFMT_CHANNEL(chn->format); 1520 CHN_UNLOCK(chn); 1521 } 1522 break; 1523 1524 case SOUND_PCM_READ_CHANNELS: 1525 chn = wrch ? wrch : rdch; 1526 if (chn) { 1527 CHN_LOCK(chn); 1528 *arg_i = AFMT_CHANNEL(chn->format); 1529 CHN_UNLOCK(chn); 1530 } else { 1531 *arg_i = 0; 1532 ret = EINVAL; 1533 } 1534 break; 1535 1536 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1537 chn = wrch ? wrch : rdch; 1538 if (chn) { 1539 CHN_LOCK(chn); 1540 *arg_i = chn_getformats(chn); 1541 CHN_UNLOCK(chn); 1542 } else { 1543 *arg_i = 0; 1544 ret = EINVAL; 1545 } 1546 break; 1547 1548 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1549 if (*arg_i != AFMT_QUERY) { 1550 tmp = 0; 1551 PCM_ACQUIRE_QUICK(d); 1552 if (wrch) { 1553 CHN_LOCK(wrch); 1554 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1555 AFMT_CHANNEL(wrch->format), 1556 AFMT_EXTCHANNEL(wrch->format))); 1557 tmp = wrch->format; 1558 CHN_UNLOCK(wrch); 1559 } 1560 if (rdch && ret == 0) { 1561 CHN_LOCK(rdch); 1562 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1563 AFMT_CHANNEL(rdch->format), 1564 AFMT_EXTCHANNEL(rdch->format))); 1565 if (tmp == 0) 1566 tmp = rdch->format; 1567 CHN_UNLOCK(rdch); 1568 } 1569 PCM_RELEASE_QUICK(d); 1570 *arg_i = AFMT_ENCODING(tmp); 1571 } else { 1572 chn = wrch ? wrch : rdch; 1573 CHN_LOCK(chn); 1574 *arg_i = AFMT_ENCODING(chn->format); 1575 CHN_UNLOCK(chn); 1576 } 1577 break; 1578 1579 case SNDCTL_DSP_SETFRAGMENT: 1580 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1581 { 1582 uint32_t fragln = (*arg_i) & 0x0000ffff; 1583 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1584 uint32_t fragsz; 1585 uint32_t r_maxfrags, r_fragsz; 1586 1587 RANGE(fragln, 4, 16); 1588 fragsz = 1 << fragln; 1589 1590 if (maxfrags == 0) 1591 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1592 if (maxfrags < 2) 1593 maxfrags = 2; 1594 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1595 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1596 1597 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1598 PCM_ACQUIRE_QUICK(d); 1599 if (rdch) { 1600 CHN_LOCK(rdch); 1601 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1602 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1603 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1604 CHN_UNLOCK(rdch); 1605 } else { 1606 r_maxfrags = maxfrags; 1607 r_fragsz = fragsz; 1608 } 1609 if (wrch && ret == 0) { 1610 CHN_LOCK(wrch); 1611 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1612 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1613 fragsz = sndbuf_getblksz(wrch->bufsoft); 1614 CHN_UNLOCK(wrch); 1615 } else { /* use whatever came from the read channel */ 1616 maxfrags = r_maxfrags; 1617 fragsz = r_fragsz; 1618 } 1619 PCM_RELEASE_QUICK(d); 1620 1621 fragln = 0; 1622 while (fragsz > 1) { 1623 fragln++; 1624 fragsz >>= 1; 1625 } 1626 *arg_i = (maxfrags << 16) | fragln; 1627 } 1628 break; 1629 1630 case SNDCTL_DSP_GETISPACE: 1631 /* return the size of data available in the input queue */ 1632 { 1633 audio_buf_info *a = (audio_buf_info *)arg; 1634 if (rdch) { 1635 struct snd_dbuf *bs = rdch->bufsoft; 1636 1637 CHN_LOCK(rdch); 1638 a->bytes = sndbuf_getready(bs); 1639 a->fragments = a->bytes / sndbuf_getblksz(bs); 1640 a->fragstotal = sndbuf_getblkcnt(bs); 1641 a->fragsize = sndbuf_getblksz(bs); 1642 CHN_UNLOCK(rdch); 1643 } else 1644 ret = EINVAL; 1645 } 1646 break; 1647 1648 case SNDCTL_DSP_GETOSPACE: 1649 /* return space available in the output queue */ 1650 { 1651 audio_buf_info *a = (audio_buf_info *)arg; 1652 if (wrch) { 1653 struct snd_dbuf *bs = wrch->bufsoft; 1654 1655 CHN_LOCK(wrch); 1656 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1657 a->bytes = sndbuf_getfree(bs); 1658 a->fragments = a->bytes / sndbuf_getblksz(bs); 1659 a->fragstotal = sndbuf_getblkcnt(bs); 1660 a->fragsize = sndbuf_getblksz(bs); 1661 CHN_UNLOCK(wrch); 1662 } else 1663 ret = EINVAL; 1664 } 1665 break; 1666 1667 case SNDCTL_DSP_GETIPTR: 1668 { 1669 count_info *a = (count_info *)arg; 1670 if (rdch) { 1671 struct snd_dbuf *bs = rdch->bufsoft; 1672 1673 CHN_LOCK(rdch); 1674 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1675 a->bytes = sndbuf_gettotal(bs); 1676 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1677 a->ptr = sndbuf_getfreeptr(bs); 1678 rdch->blocks = sndbuf_getblocks(bs); 1679 CHN_UNLOCK(rdch); 1680 } else 1681 ret = EINVAL; 1682 } 1683 break; 1684 1685 case SNDCTL_DSP_GETOPTR: 1686 { 1687 count_info *a = (count_info *)arg; 1688 if (wrch) { 1689 struct snd_dbuf *bs = wrch->bufsoft; 1690 1691 CHN_LOCK(wrch); 1692 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1693 a->bytes = sndbuf_gettotal(bs); 1694 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1695 a->ptr = sndbuf_getreadyptr(bs); 1696 wrch->blocks = sndbuf_getblocks(bs); 1697 CHN_UNLOCK(wrch); 1698 } else 1699 ret = EINVAL; 1700 } 1701 break; 1702 1703 case SNDCTL_DSP_GETCAPS: 1704 PCM_LOCK(d); 1705 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1706 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1707 *arg_i |= PCM_CAP_DUPLEX; 1708 if (rdch && (rdch->flags & CHN_F_VIRTUAL) != 0) 1709 *arg_i |= PCM_CAP_VIRTUAL; 1710 if (wrch && (wrch->flags & CHN_F_VIRTUAL) != 0) 1711 *arg_i |= PCM_CAP_VIRTUAL; 1712 PCM_UNLOCK(d); 1713 break; 1714 1715 case SOUND_PCM_READ_BITS: 1716 chn = wrch ? wrch : rdch; 1717 if (chn) { 1718 CHN_LOCK(chn); 1719 if (chn->format & AFMT_8BIT) 1720 *arg_i = 8; 1721 else if (chn->format & AFMT_16BIT) 1722 *arg_i = 16; 1723 else if (chn->format & AFMT_24BIT) 1724 *arg_i = 24; 1725 else if (chn->format & AFMT_32BIT) 1726 *arg_i = 32; 1727 else 1728 ret = EINVAL; 1729 CHN_UNLOCK(chn); 1730 } else { 1731 *arg_i = 0; 1732 ret = EINVAL; 1733 } 1734 break; 1735 1736 case SNDCTL_DSP_SETTRIGGER: 1737 if (rdch) { 1738 CHN_LOCK(rdch); 1739 rdch->flags &= ~CHN_F_NOTRIGGER; 1740 if (*arg_i & PCM_ENABLE_INPUT) 1741 chn_start(rdch, 1); 1742 else { 1743 chn_abort(rdch); 1744 chn_resetbuf(rdch); 1745 rdch->flags |= CHN_F_NOTRIGGER; 1746 } 1747 CHN_UNLOCK(rdch); 1748 } 1749 if (wrch) { 1750 CHN_LOCK(wrch); 1751 wrch->flags &= ~CHN_F_NOTRIGGER; 1752 if (*arg_i & PCM_ENABLE_OUTPUT) 1753 chn_start(wrch, 1); 1754 else { 1755 chn_abort(wrch); 1756 chn_resetbuf(wrch); 1757 wrch->flags |= CHN_F_NOTRIGGER; 1758 } 1759 CHN_UNLOCK(wrch); 1760 } 1761 break; 1762 1763 case SNDCTL_DSP_GETTRIGGER: 1764 *arg_i = 0; 1765 if (wrch) { 1766 CHN_LOCK(wrch); 1767 if (wrch->flags & CHN_F_TRIGGERED) 1768 *arg_i |= PCM_ENABLE_OUTPUT; 1769 CHN_UNLOCK(wrch); 1770 } 1771 if (rdch) { 1772 CHN_LOCK(rdch); 1773 if (rdch->flags & CHN_F_TRIGGERED) 1774 *arg_i |= PCM_ENABLE_INPUT; 1775 CHN_UNLOCK(rdch); 1776 } 1777 break; 1778 1779 case SNDCTL_DSP_GETODELAY: 1780 if (wrch) { 1781 struct snd_dbuf *bs = wrch->bufsoft; 1782 1783 CHN_LOCK(wrch); 1784 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1785 *arg_i = sndbuf_getready(bs); 1786 CHN_UNLOCK(wrch); 1787 } else 1788 ret = EINVAL; 1789 break; 1790 1791 case SNDCTL_DSP_POST: 1792 if (wrch) { 1793 CHN_LOCK(wrch); 1794 wrch->flags &= ~CHN_F_NOTRIGGER; 1795 chn_start(wrch, 1); 1796 CHN_UNLOCK(wrch); 1797 } 1798 break; 1799 1800 case SNDCTL_DSP_SETDUPLEX: 1801 /* 1802 * switch to full-duplex mode if card is in half-duplex 1803 * mode and is able to work in full-duplex mode 1804 */ 1805 PCM_LOCK(d); 1806 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1807 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1808 PCM_UNLOCK(d); 1809 break; 1810 1811 /* 1812 * The following four ioctls are simple wrappers around mixer_ioctl 1813 * with no further processing. xcmd is short for "translated 1814 * command". 1815 */ 1816 case SNDCTL_DSP_GETRECVOL: 1817 if (xcmd == 0) { 1818 xcmd = SOUND_MIXER_READ_RECLEV; 1819 chn = rdch; 1820 } 1821 /* FALLTHROUGH */ 1822 case SNDCTL_DSP_SETRECVOL: 1823 if (xcmd == 0) { 1824 xcmd = SOUND_MIXER_WRITE_RECLEV; 1825 chn = rdch; 1826 } 1827 /* FALLTHROUGH */ 1828 case SNDCTL_DSP_GETPLAYVOL: 1829 if (xcmd == 0) { 1830 xcmd = SOUND_MIXER_READ_PCM; 1831 chn = wrch; 1832 } 1833 /* FALLTHROUGH */ 1834 case SNDCTL_DSP_SETPLAYVOL: 1835 if (xcmd == 0) { 1836 xcmd = SOUND_MIXER_WRITE_PCM; 1837 chn = wrch; 1838 } 1839 1840 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1841 if (ret != -1) { 1842 PCM_GIANT_EXIT(d); 1843 return (ret); 1844 } 1845 1846 if (d->mixer_dev != NULL) { 1847 PCM_ACQUIRE_QUICK(d); 1848 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1849 MIXER_CMD_DIRECT); 1850 PCM_RELEASE_QUICK(d); 1851 } else 1852 ret = ENOTSUP; 1853 1854 break; 1855 1856 case SNDCTL_DSP_GET_RECSRC_NAMES: 1857 case SNDCTL_DSP_GET_RECSRC: 1858 case SNDCTL_DSP_SET_RECSRC: 1859 if (d->mixer_dev != NULL) { 1860 PCM_ACQUIRE_QUICK(d); 1861 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1862 MIXER_CMD_DIRECT); 1863 PCM_RELEASE_QUICK(d); 1864 } else 1865 ret = ENOTSUP; 1866 break; 1867 1868 /* 1869 * The following 3 ioctls aren't very useful at the moment. For 1870 * now, only a single channel is associated with a cdev (/dev/dspN 1871 * instance), so there's only a single output routing to use (i.e., 1872 * the wrch bound to this cdev). 1873 */ 1874 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1875 { 1876 oss_mixer_enuminfo *ei; 1877 ei = (oss_mixer_enuminfo *)arg; 1878 ei->dev = 0; 1879 ei->ctrl = 0; 1880 ei->version = 0; /* static for now */ 1881 ei->strindex[0] = 0; 1882 1883 if (wrch != NULL) { 1884 ei->nvalues = 1; 1885 strlcpy(ei->strings, wrch->name, 1886 sizeof(ei->strings)); 1887 } else { 1888 ei->nvalues = 0; 1889 ei->strings[0] = '\0'; 1890 } 1891 } 1892 break; 1893 case SNDCTL_DSP_GET_PLAYTGT: 1894 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1895 /* 1896 * Re: SET_PLAYTGT 1897 * OSSv4: "The value that was accepted by the device will 1898 * be returned back in the variable pointed by the 1899 * argument." 1900 */ 1901 if (wrch != NULL) 1902 *arg_i = 0; 1903 else 1904 ret = EINVAL; 1905 break; 1906 1907 case SNDCTL_DSP_SILENCE: 1908 /* 1909 * Flush the software (pre-feed) buffer, but try to minimize playback 1910 * interruption. (I.e., record unplayed samples with intent to 1911 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1912 * functionality. 1913 */ 1914 if (wrch == NULL) 1915 ret = EINVAL; 1916 else { 1917 struct snd_dbuf *bs; 1918 CHN_LOCK(wrch); 1919 while (wrch->inprog != 0) 1920 cv_wait(&wrch->cv, wrch->lock); 1921 bs = wrch->bufsoft; 1922 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1923 bs->sl = sndbuf_getready(bs); 1924 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1925 sndbuf_fillsilence(bs); 1926 chn_start(wrch, 0); 1927 } 1928 CHN_UNLOCK(wrch); 1929 } 1930 break; 1931 1932 case SNDCTL_DSP_SKIP: 1933 /* 1934 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1935 * playback buffer by moving the current write position immediately 1936 * before the point where the device is currently reading the samples." 1937 */ 1938 if (wrch == NULL) 1939 ret = EINVAL; 1940 else { 1941 struct snd_dbuf *bs; 1942 CHN_LOCK(wrch); 1943 while (wrch->inprog != 0) 1944 cv_wait(&wrch->cv, wrch->lock); 1945 bs = wrch->bufsoft; 1946 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1947 sndbuf_softreset(bs); 1948 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1949 bs->sl = 0; 1950 chn_start(wrch, 0); 1951 } 1952 CHN_UNLOCK(wrch); 1953 } 1954 break; 1955 1956 case SNDCTL_DSP_CURRENT_OPTR: 1957 case SNDCTL_DSP_CURRENT_IPTR: 1958 /** 1959 * @note Changing formats resets the buffer counters, which differs 1960 * from the 4Front drivers. However, I don't expect this to be 1961 * much of a problem. 1962 * 1963 * @note In a test where @c CURRENT_OPTR is called immediately after write 1964 * returns, this driver is about 32K samples behind whereas 1965 * 4Front's is about 8K samples behind. Should determine source 1966 * of discrepancy, even if only out of curiosity. 1967 * 1968 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1969 */ 1970 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1971 if (chn == NULL) 1972 ret = EINVAL; 1973 else { 1974 struct snd_dbuf *bs; 1975 /* int tmp; */ 1976 1977 oss_count_t *oc = (oss_count_t *)arg; 1978 1979 CHN_LOCK(chn); 1980 bs = chn->bufsoft; 1981 #if 0 1982 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1983 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1984 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1985 #else 1986 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1987 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1988 #endif 1989 CHN_UNLOCK(chn); 1990 } 1991 break; 1992 1993 case SNDCTL_DSP_HALT_OUTPUT: 1994 case SNDCTL_DSP_HALT_INPUT: 1995 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1996 if (chn == NULL) 1997 ret = EINVAL; 1998 else { 1999 CHN_LOCK(chn); 2000 chn_abort(chn); 2001 CHN_UNLOCK(chn); 2002 } 2003 break; 2004 2005 case SNDCTL_DSP_LOW_WATER: 2006 /* 2007 * Set the number of bytes required to attract attention by 2008 * select/poll. 2009 */ 2010 if (wrch != NULL) { 2011 CHN_LOCK(wrch); 2012 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 2013 CHN_UNLOCK(wrch); 2014 } 2015 if (rdch != NULL) { 2016 CHN_LOCK(rdch); 2017 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2018 CHN_UNLOCK(rdch); 2019 } 2020 break; 2021 2022 case SNDCTL_DSP_GETERROR: 2023 /* 2024 * OSSv4 docs: "All errors and counters will automatically be 2025 * cleared to zeroes after the call so each call will return only 2026 * the errors that occurred after the previous invocation. ... The 2027 * play_underruns and rec_overrun fields are the only useful fields 2028 * returned by OSS 4.0." 2029 */ 2030 { 2031 audio_errinfo *ei = (audio_errinfo *)arg; 2032 2033 bzero((void *)ei, sizeof(*ei)); 2034 2035 if (wrch != NULL) { 2036 CHN_LOCK(wrch); 2037 ei->play_underruns = wrch->xruns; 2038 wrch->xruns = 0; 2039 CHN_UNLOCK(wrch); 2040 } 2041 if (rdch != NULL) { 2042 CHN_LOCK(rdch); 2043 ei->rec_overruns = rdch->xruns; 2044 rdch->xruns = 0; 2045 CHN_UNLOCK(rdch); 2046 } 2047 } 2048 break; 2049 2050 case SNDCTL_DSP_SYNCGROUP: 2051 PCM_ACQUIRE_QUICK(d); 2052 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2053 PCM_RELEASE_QUICK(d); 2054 break; 2055 2056 case SNDCTL_DSP_SYNCSTART: 2057 PCM_ACQUIRE_QUICK(d); 2058 ret = dsp_oss_syncstart(*arg_i); 2059 PCM_RELEASE_QUICK(d); 2060 break; 2061 2062 case SNDCTL_DSP_POLICY: 2063 PCM_ACQUIRE_QUICK(d); 2064 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2065 PCM_RELEASE_QUICK(d); 2066 break; 2067 2068 case SNDCTL_DSP_COOKEDMODE: 2069 PCM_ACQUIRE_QUICK(d); 2070 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2071 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2072 PCM_RELEASE_QUICK(d); 2073 break; 2074 case SNDCTL_DSP_GET_CHNORDER: 2075 PCM_ACQUIRE_QUICK(d); 2076 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2077 PCM_RELEASE_QUICK(d); 2078 break; 2079 case SNDCTL_DSP_SET_CHNORDER: 2080 PCM_ACQUIRE_QUICK(d); 2081 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2082 PCM_RELEASE_QUICK(d); 2083 break; 2084 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2085 PCM_ACQUIRE_QUICK(d); 2086 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2087 PCM_RELEASE_QUICK(d); 2088 break; 2089 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2090 ret = EINVAL; 2091 break; 2092 #ifdef OSSV4_EXPERIMENT 2093 /* 2094 * XXX The following ioctls are not yet supported and just return 2095 * EINVAL. 2096 */ 2097 case SNDCTL_DSP_GETOPEAKS: 2098 case SNDCTL_DSP_GETIPEAKS: 2099 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2100 if (chn == NULL) 2101 ret = EINVAL; 2102 else { 2103 oss_peaks_t *op = (oss_peaks_t *)arg; 2104 int lpeak, rpeak; 2105 2106 CHN_LOCK(chn); 2107 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2108 if (ret == -1) 2109 ret = EINVAL; 2110 else { 2111 (*op)[0] = lpeak; 2112 (*op)[1] = rpeak; 2113 } 2114 CHN_UNLOCK(chn); 2115 } 2116 break; 2117 2118 /* 2119 * XXX Once implemented, revisit this for proper cv protection 2120 * (if necessary). 2121 */ 2122 case SNDCTL_GETLABEL: 2123 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2124 break; 2125 case SNDCTL_SETLABEL: 2126 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2127 break; 2128 case SNDCTL_GETSONG: 2129 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2130 break; 2131 case SNDCTL_SETSONG: 2132 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2133 break; 2134 case SNDCTL_SETNAME: 2135 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2136 break; 2137 #if 0 2138 /** 2139 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2140 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2141 * 4Front Technologies. 2142 */ 2143 case SNDCTL_DSP_READCTL: 2144 case SNDCTL_DSP_WRITECTL: 2145 ret = EINVAL; 2146 break; 2147 #endif /* !0 (explicitly omitted ioctls) */ 2148 2149 #endif /* !OSSV4_EXPERIMENT */ 2150 case SNDCTL_DSP_MAPINBUF: 2151 case SNDCTL_DSP_MAPOUTBUF: 2152 case SNDCTL_DSP_SETSYNCRO: 2153 /* undocumented */ 2154 2155 case SNDCTL_DSP_SUBDIVIDE: 2156 case SOUND_PCM_WRITE_FILTER: 2157 case SOUND_PCM_READ_FILTER: 2158 /* dunno what these do, don't sound important */ 2159 2160 default: 2161 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2162 ret = EINVAL; 2163 break; 2164 } 2165 2166 PCM_GIANT_LEAVE(d); 2167 2168 return (ret); 2169 } 2170 2171 static int 2172 dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2173 { 2174 struct snddev_info *d; 2175 struct pcm_channel *wrch, *rdch; 2176 int ret, e; 2177 2178 d = dsp_get_info(i_dev); 2179 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) { 2180 /* XXX many clients don't understand POLLNVAL */ 2181 return (events & (POLLHUP | POLLPRI | POLLIN | 2182 POLLRDNORM | POLLOUT | POLLWRNORM)); 2183 } 2184 PCM_GIANT_ENTER(d); 2185 2186 wrch = NULL; 2187 rdch = NULL; 2188 ret = 0; 2189 2190 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2191 2192 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2193 e = (events & (POLLOUT | POLLWRNORM)); 2194 if (e) 2195 ret |= chn_poll(wrch, e, td); 2196 } 2197 2198 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2199 e = (events & (POLLIN | POLLRDNORM)); 2200 if (e) 2201 ret |= chn_poll(rdch, e, td); 2202 } 2203 2204 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2205 2206 PCM_GIANT_LEAVE(d); 2207 2208 return (ret); 2209 } 2210 2211 static int 2212 dsp_mmap(struct cdev *i_dev, vm_ooffset_t offset, vm_paddr_t *paddr, 2213 int nprot, vm_memattr_t *memattr) 2214 { 2215 2216 /* 2217 * offset is in range due to checks in dsp_mmap_single(). 2218 * XXX memattr is not honored. 2219 */ 2220 *paddr = vtophys(offset); 2221 return (0); 2222 } 2223 2224 static int 2225 dsp_mmap_single(struct cdev *i_dev, vm_ooffset_t *offset, 2226 vm_size_t size, struct vm_object **object, int nprot) 2227 { 2228 struct snddev_info *d; 2229 struct pcm_channel *wrch, *rdch, *c; 2230 2231 /* 2232 * Reject PROT_EXEC by default. It just doesn't makes sense. 2233 * Unfortunately, we have to give up this one due to linux_mmap 2234 * changes. 2235 * 2236 * https://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2237 * 2238 */ 2239 #ifdef SV_ABI_LINUX 2240 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2241 (dsp_mmap_allow_prot_exec == 0 && 2242 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2243 #else 2244 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2245 #endif 2246 return (EINVAL); 2247 2248 /* 2249 * PROT_READ (alone) selects the input buffer. 2250 * PROT_WRITE (alone) selects the output buffer. 2251 * PROT_WRITE|PROT_READ together select the output buffer. 2252 */ 2253 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2254 return (EINVAL); 2255 2256 d = dsp_get_info(i_dev); 2257 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 2258 return (EINVAL); 2259 2260 PCM_GIANT_ENTER(d); 2261 2262 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2263 2264 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2265 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2266 (*offset + size) > sndbuf_getsize(c->bufsoft) || 2267 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2268 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2269 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2270 PCM_GIANT_EXIT(d); 2271 return (EINVAL); 2272 } 2273 2274 if (wrch != NULL) 2275 wrch->flags |= CHN_F_MMAP; 2276 if (rdch != NULL) 2277 rdch->flags |= CHN_F_MMAP; 2278 2279 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2280 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2281 *object = vm_pager_allocate(OBJT_DEVICE, i_dev, 2282 size, nprot, *offset, curthread->td_ucred); 2283 2284 PCM_GIANT_LEAVE(d); 2285 2286 if (*object == NULL) 2287 return (EINVAL); 2288 return (0); 2289 } 2290 2291 /* So much for dev_stdclone() */ 2292 static int 2293 dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2294 { 2295 size_t len; 2296 2297 len = strlen(namep); 2298 if (strncmp(name, namep, len) != 0) 2299 return (ENODEV); 2300 2301 name += len; 2302 2303 if (isdigit(*name) == 0) 2304 return (ENODEV); 2305 2306 len = strlen(sep); 2307 2308 if (*name == '' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2309 return (ENODEV); 2310 2311 for (*u = 0; isdigit(*name) != 0; name++) { 2312 *u *= 10; 2313 *u += *name - ''; 2314 if (*u > dsp_umax) 2315 return (ENODEV); 2316 } 2317 2318 if (*name == '\0') 2319 return ((use_sep == 0) ? 0 : ENODEV); 2320 2321 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2322 return (ENODEV); 2323 2324 name += len; 2325 2326 if (*name == '' && name[1] != '\0') 2327 return (ENODEV); 2328 2329 for (*c = 0; isdigit(*name) != 0; name++) { 2330 *c *= 10; 2331 *c += *name - ''; 2332 if (*c > dsp_cmax) 2333 return (ENODEV); 2334 } 2335 2336 if (*name != '\0') 2337 return (ENODEV); 2338 2339 return (0); 2340 } 2341 2342 static void 2343 dsp_clone(void *arg, 2344 struct ucred *cred, 2345 char *name, int namelen, struct cdev **dev) 2346 { 2347 struct snddev_info *d; 2348 struct snd_clone_entry *ce; 2349 struct pcm_channel *c; 2350 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2351 char *devname, *devcmp, *devsep; 2352 2353 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2354 2355 if (*dev != NULL) 2356 return; 2357 2358 unit = -1; 2359 cunit = -1; 2360 devtype = -1; 2361 devhw = 0; 2362 devcmax = -1; 2363 tumax = -1; 2364 devname = NULL; 2365 devsep = NULL; 2366 2367 for (i = 0; unit == -1 && 2368 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2369 devtype = dsp_cdevs[i].type; 2370 devcmp = dsp_cdevs[i].name; 2371 devsep = dsp_cdevs[i].sep; 2372 devname = dsp_cdevs[i].alias; 2373 if (devname == NULL) 2374 devname = devcmp; 2375 devhw = dsp_cdevs[i].hw; 2376 devcmax = dsp_cdevs[i].max - 1; 2377 if (strcmp(name, devcmp) == 0) { 2378 if (dsp_basename_clone != 0) 2379 unit = snd_unit; 2380 } else if (dsp_stdclone(name, devcmp, devsep, 2381 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2382 unit = -1; 2383 cunit = -1; 2384 } 2385 } 2386 2387 d = devclass_get_softc(pcm_devclass, unit); 2388 if (!PCM_REGISTERED(d) || d->clones == NULL) 2389 return; 2390 2391 /* XXX Need Giant magic entry ??? */ 2392 2393 PCM_LOCK(d); 2394 if (snd_clone_disabled(d->clones)) { 2395 PCM_UNLOCK(d); 2396 return; 2397 } 2398 2399 PCM_WAIT(d); 2400 PCM_ACQUIRE(d); 2401 PCM_UNLOCK(d); 2402 2403 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2404 2405 if (devhw != 0) { 2406 KASSERT(devcmax <= dsp_cmax, 2407 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2408 if (cunit > devcmax) { 2409 PCM_RELEASE_QUICK(d); 2410 return; 2411 } 2412 udcmask |= snd_c2unit(cunit); 2413 CHN_FOREACH(c, d, channels.pcm) { 2414 CHN_LOCK(c); 2415 if (c->unit != udcmask) { 2416 CHN_UNLOCK(c); 2417 continue; 2418 } 2419 CHN_UNLOCK(c); 2420 udcmask &= ~snd_c2unit(cunit); 2421 /* 2422 * Temporarily increase clone maxunit to overcome 2423 * vchan flexibility. 2424 * 2425 * # sysctl dev.pcm.0.play.vchans=256 2426 * dev.pcm.0.play.vchans: 1 -> 256 2427 * # cat /dev/zero > /dev/dsp0.vp255 & 2428 * [1] 17296 2429 * # sysctl dev.pcm.0.play.vchans=0 2430 * dev.pcm.0.play.vchans: 256 -> 1 2431 * # fg 2432 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2433 * ^C 2434 * # cat /dev/zero > /dev/dsp0.vp255 2435 * zsh: operation not supported: /dev/dsp0.vp255 2436 */ 2437 tumax = snd_clone_getmaxunit(d->clones); 2438 if (cunit > tumax) 2439 snd_clone_setmaxunit(d->clones, cunit); 2440 else 2441 tumax = -1; 2442 goto dsp_clone_alloc; 2443 } 2444 /* 2445 * Ok, so we're requesting unallocated vchan, but still 2446 * within maximum vchan limit. 2447 */ 2448 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2449 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2450 cunit < snd_maxautovchans) { 2451 udcmask &= ~snd_c2unit(cunit); 2452 tumax = snd_clone_getmaxunit(d->clones); 2453 if (cunit > tumax) 2454 snd_clone_setmaxunit(d->clones, cunit); 2455 else 2456 tumax = -1; 2457 goto dsp_clone_alloc; 2458 } 2459 PCM_RELEASE_QUICK(d); 2460 return; 2461 } 2462 2463 dsp_clone_alloc: 2464 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2465 if (tumax != -1) 2466 snd_clone_setmaxunit(d->clones, tumax); 2467 if (ce != NULL) { 2468 udcmask |= snd_c2unit(cunit); 2469 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2470 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2471 devname, unit, devsep, cunit); 2472 snd_clone_register(ce, *dev); 2473 } 2474 2475 PCM_RELEASE_QUICK(d); 2476 2477 if (*dev != NULL) 2478 dev_ref(*dev); 2479 } 2480 2481 static void 2482 dsp_sysinit(void *p) 2483 { 2484 if (dsp_ehtag != NULL) 2485 return; 2486 /* initialize unit numbering */ 2487 snd_unit_init(); 2488 dsp_umax = PCMMAXUNIT; 2489 dsp_cmax = PCMMAXCHAN; 2490 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2491 } 2492 2493 static void 2494 dsp_sysuninit(void *p) 2495 { 2496 if (dsp_ehtag == NULL) 2497 return; 2498 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2499 dsp_ehtag = NULL; 2500 } 2501 2502 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2503 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2504 2505 char * 2506 dsp_unit2name(char *buf, size_t len, int unit) 2507 { 2508 int i, dtype; 2509 2510 KASSERT(buf != NULL && len != 0, 2511 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2512 2513 dtype = snd_unit2d(unit); 2514 2515 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2516 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2517 continue; 2518 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2519 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2520 return (buf); 2521 } 2522 2523 return (NULL); 2524 } 2525 2526 /** 2527 * @brief Handler for SNDCTL_AUDIOINFO. 2528 * 2529 * Gathers information about the audio device specified in ai->dev. If 2530 * ai->dev == -1, then this function gathers information about the current 2531 * device. If the call comes in on a non-audio device and ai->dev == -1, 2532 * return EINVAL. 2533 * 2534 * This routine is supposed to go practically straight to the hardware, 2535 * getting capabilities directly from the sound card driver, side-stepping 2536 * the intermediate channel interface. 2537 * 2538 * Note, however, that the usefulness of this command is significantly 2539 * decreased when requesting info about any device other than the one serving 2540 * the request. While each snddev_channel refers to a specific device node, 2541 * the converse is *not* true. Currently, when a sound device node is opened, 2542 * the sound subsystem scans for an available audio channel (or channels, if 2543 * opened in read+write) and then assigns them to the si_drv[12] private 2544 * data fields. As a result, any information returned linking a channel to 2545 * a specific character device isn't necessarily accurate. 2546 * 2547 * @note 2548 * Calling threads must not hold any snddev_info or pcm_channel locks. 2549 * 2550 * @param dev device on which the ioctl was issued 2551 * @param ai ioctl request data container 2552 * 2553 * @retval 0 success 2554 * @retval EINVAL ai->dev specifies an invalid device 2555 * 2556 * @todo Verify correctness of Doxygen tags. ;) 2557 */ 2558 int 2559 dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2560 { 2561 struct pcmchan_caps *caps; 2562 struct pcm_channel *ch; 2563 struct snddev_info *d; 2564 uint32_t fmts; 2565 int i, nchan, *rates, minch, maxch; 2566 char *devname, buf[CHN_NAMELEN]; 2567 2568 /* 2569 * If probing the device that received the ioctl, make sure it's a 2570 * DSP device. (Users may use this ioctl with /dev/mixer and 2571 * /dev/midi.) 2572 */ 2573 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2574 return (EINVAL); 2575 2576 ch = NULL; 2577 devname = NULL; 2578 nchan = 0; 2579 bzero(buf, sizeof(buf)); 2580 2581 /* 2582 * Search for the requested audio device (channel). Start by 2583 * iterating over pcm devices. 2584 */ 2585 for (i = 0; pcm_devclass != NULL && 2586 i < devclass_get_maxunit(pcm_devclass); i++) { 2587 d = devclass_get_softc(pcm_devclass, i); 2588 if (!PCM_REGISTERED(d)) 2589 continue; 2590 2591 /* XXX Need Giant magic entry ??? */ 2592 2593 /* See the note in function docblock */ 2594 PCM_UNLOCKASSERT(d); 2595 PCM_LOCK(d); 2596 2597 CHN_FOREACH(ch, d, channels.pcm) { 2598 CHN_UNLOCKASSERT(ch); 2599 CHN_LOCK(ch); 2600 if (ai->dev == -1) { 2601 if (DSP_REGISTERED(d, i_dev) && 2602 (ch == PCM_RDCH(i_dev) || /* record ch */ 2603 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2604 devname = dsp_unit2name(buf, 2605 sizeof(buf), ch->unit); 2606 } 2607 } else if (ai->dev == nchan) { 2608 devname = dsp_unit2name(buf, sizeof(buf), 2609 ch->unit); 2610 } 2611 if (devname != NULL) 2612 break; 2613 CHN_UNLOCK(ch); 2614 ++nchan; 2615 } 2616 2617 if (devname != NULL) { 2618 /* 2619 * At this point, the following synchronization stuff 2620 * has happened: 2621 * - a specific PCM device is locked. 2622 * - a specific audio channel has been locked, so be 2623 * sure to unlock when exiting; 2624 */ 2625 2626 caps = chn_getcaps(ch); 2627 2628 /* 2629 * With all handles collected, zero out the user's 2630 * container and begin filling in its fields. 2631 */ 2632 bzero((void *)ai, sizeof(oss_audioinfo)); 2633 2634 ai->dev = nchan; 2635 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2636 2637 if ((ch->flags & CHN_F_BUSY) == 0) 2638 ai->busy = 0; 2639 else 2640 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2641 2642 /** 2643 * @note 2644 * @c cmd - OSSv4 docs: "Only supported under Linux at 2645 * this moment." Cop-out, I know, but I'll save 2646 * running around in the process table for later. 2647 * Is there a risk of leaking information? 2648 */ 2649 ai->pid = ch->pid; 2650 2651 /* 2652 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2653 * Note, however, that a single channel operates in 2654 * only one direction, so PCM_CAP_DUPLEX is out. 2655 */ 2656 /** 2657 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2658 * these in pcmchan::caps? 2659 */ 2660 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2661 ((ch->flags & CHN_F_VIRTUAL) ? PCM_CAP_VIRTUAL : 0) | 2662 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2663 2664 /* 2665 * Collect formats supported @b natively by the 2666 * device. Also determine min/max channels. (I.e., 2667 * mono, stereo, or both?) 2668 * 2669 * If any channel is stereo, maxch = 2; 2670 * if all channels are stereo, minch = 2, too; 2671 * if any channel is mono, minch = 1; 2672 * and if all channels are mono, maxch = 1. 2673 */ 2674 minch = 0; 2675 maxch = 0; 2676 fmts = 0; 2677 for (i = 0; caps->fmtlist[i]; i++) { 2678 fmts |= caps->fmtlist[i]; 2679 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2680 minch = (minch == 0) ? 2 : minch; 2681 maxch = 2; 2682 } else { 2683 minch = 1; 2684 maxch = (maxch == 0) ? 1 : maxch; 2685 } 2686 } 2687 2688 if (ch->direction == PCMDIR_PLAY) 2689 ai->oformats = fmts; 2690 else 2691 ai->iformats = fmts; 2692 2693 /** 2694 * @note 2695 * @c magic - OSSv4 docs: "Reserved for internal use 2696 * by OSS." 2697 * 2698 * @par 2699 * @c card_number - OSSv4 docs: "Number of the sound 2700 * card where this device belongs or -1 if this 2701 * information is not available. Applications 2702 * should normally not use this field for any 2703 * purpose." 2704 */ 2705 ai->card_number = -1; 2706 /** 2707 * @todo @c song_name - depends first on 2708 * SNDCTL_[GS]ETSONG @todo @c label - depends 2709 * on SNDCTL_[GS]ETLABEL 2710 * @todo @c port_number - routing information? 2711 */ 2712 ai->port_number = -1; 2713 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2714 /** 2715 * @note 2716 * @c real_device - OSSv4 docs: "Obsolete." 2717 */ 2718 ai->real_device = -1; 2719 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2720 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2721 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2722 /** 2723 * @note 2724 * @c flags - OSSv4 docs: "Reserved for future use." 2725 * 2726 * @note 2727 * @c binding - OSSv4 docs: "Reserved for future use." 2728 * 2729 * @todo @c handle - haven't decided how to generate 2730 * this yet; bus, vendor, device IDs? 2731 */ 2732 ai->min_rate = caps->minspeed; 2733 ai->max_rate = caps->maxspeed; 2734 2735 ai->min_channels = minch; 2736 ai->max_channels = maxch; 2737 2738 ai->nrates = chn_getrates(ch, &rates); 2739 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2740 ai->nrates = OSS_MAX_SAMPLE_RATES; 2741 2742 for (i = 0; i < ai->nrates; i++) 2743 ai->rates[i] = rates[i]; 2744 2745 ai->next_play_engine = 0; 2746 ai->next_rec_engine = 0; 2747 2748 CHN_UNLOCK(ch); 2749 } 2750 2751 PCM_UNLOCK(d); 2752 2753 if (devname != NULL) 2754 return (0); 2755 } 2756 2757 /* Exhausted the search -- nothing is locked, so return. */ 2758 return (EINVAL); 2759 } 2760 2761 /** 2762 * @brief Assigns a PCM channel to a sync group. 2763 * 2764 * Sync groups are used to enable audio operations on multiple devices 2765 * simultaneously. They may be used with any number of devices and may 2766 * span across applications. Devices are added to groups with 2767 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2768 * SNDCTL_DSP_SYNCSTART ioctl. 2769 * 2770 * If the @c id field of the @c group parameter is set to zero, then a new 2771 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2772 * the group specified. 2773 * 2774 * @todo As far as memory allocation, should we assume that things are 2775 * okay and allocate with M_WAITOK before acquiring channel locks, 2776 * freeing later if not? 2777 * 2778 * @param wrch output channel associated w/ device (if any) 2779 * @param rdch input channel associated w/ device (if any) 2780 * @param group Sync group parameters 2781 * 2782 * @retval 0 success 2783 * @retval non-zero error to be propagated upstream 2784 */ 2785 static int 2786 dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2787 { 2788 struct pcmchan_syncmember *smrd, *smwr; 2789 struct pcmchan_syncgroup *sg; 2790 int ret, sg_ids[3]; 2791 2792 smrd = NULL; 2793 smwr = NULL; 2794 sg = NULL; 2795 ret = 0; 2796 2797 /* 2798 * Free_unr() may sleep, so store released syncgroup IDs until after 2799 * all locks are released. 2800 */ 2801 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2802 2803 PCM_SG_LOCK(); 2804 2805 /* 2806 * - Insert channel(s) into group's member list. 2807 * - Set CHN_F_NOTRIGGER on channel(s). 2808 * - Stop channel(s). 2809 */ 2810 2811 /* 2812 * If device's channels are already mapped to a group, unmap them. 2813 */ 2814 if (wrch) { 2815 CHN_LOCK(wrch); 2816 sg_ids[0] = chn_syncdestroy(wrch); 2817 } 2818 2819 if (rdch) { 2820 CHN_LOCK(rdch); 2821 sg_ids[1] = chn_syncdestroy(rdch); 2822 } 2823 2824 /* 2825 * Verify that mode matches character device properites. 2826 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2827 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2828 */ 2829 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2830 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2831 ret = EINVAL; 2832 goto out; 2833 } 2834 2835 /* 2836 * An id of zero indicates the user wants to create a new 2837 * syncgroup. 2838 */ 2839 if (group->id == 0) { 2840 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2841 if (sg != NULL) { 2842 SLIST_INIT(&sg->members); 2843 sg->id = alloc_unr(pcmsg_unrhdr); 2844 2845 group->id = sg->id; 2846 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2847 } else 2848 ret = ENOMEM; 2849 } else { 2850 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2851 if (sg->id == group->id) 2852 break; 2853 } 2854 if (sg == NULL) 2855 ret = EINVAL; 2856 } 2857 2858 /* Couldn't create or find a syncgroup. Fail. */ 2859 if (sg == NULL) 2860 goto out; 2861 2862 /* 2863 * Allocate a syncmember, assign it and a channel together, and 2864 * insert into syncgroup. 2865 */ 2866 if (group->mode & PCM_ENABLE_INPUT) { 2867 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2868 if (smrd == NULL) { 2869 ret = ENOMEM; 2870 goto out; 2871 } 2872 2873 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2874 smrd->parent = sg; 2875 smrd->ch = rdch; 2876 2877 chn_abort(rdch); 2878 rdch->flags |= CHN_F_NOTRIGGER; 2879 rdch->sm = smrd; 2880 } 2881 2882 if (group->mode & PCM_ENABLE_OUTPUT) { 2883 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2884 if (smwr == NULL) { 2885 ret = ENOMEM; 2886 goto out; 2887 } 2888 2889 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2890 smwr->parent = sg; 2891 smwr->ch = wrch; 2892 2893 chn_abort(wrch); 2894 wrch->flags |= CHN_F_NOTRIGGER; 2895 wrch->sm = smwr; 2896 } 2897 2898 2899 out: 2900 if (ret != 0) { 2901 if (smrd != NULL) 2902 free(smrd, M_DEVBUF); 2903 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2904 sg_ids[2] = sg->id; 2905 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2906 free(sg, M_DEVBUF); 2907 } 2908 2909 if (wrch) 2910 wrch->sm = NULL; 2911 if (rdch) 2912 rdch->sm = NULL; 2913 } 2914 2915 if (wrch) 2916 CHN_UNLOCK(wrch); 2917 if (rdch) 2918 CHN_UNLOCK(rdch); 2919 2920 PCM_SG_UNLOCK(); 2921 2922 if (sg_ids[0]) 2923 free_unr(pcmsg_unrhdr, sg_ids[0]); 2924 if (sg_ids[1]) 2925 free_unr(pcmsg_unrhdr, sg_ids[1]); 2926 if (sg_ids[2]) 2927 free_unr(pcmsg_unrhdr, sg_ids[2]); 2928 2929 return (ret); 2930 } 2931 2932 /** 2933 * @brief Launch a sync group into action 2934 * 2935 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2936 * iterates over all members, triggering them along the way. 2937 * 2938 * @note Caller must not hold any channel locks. 2939 * 2940 * @param sg_id sync group identifier 2941 * 2942 * @retval 0 success 2943 * @retval non-zero error worthy of propagating upstream to user 2944 */ 2945 static int 2946 dsp_oss_syncstart(int sg_id) 2947 { 2948 struct pcmchan_syncmember *sm, *sm_tmp; 2949 struct pcmchan_syncgroup *sg; 2950 struct pcm_channel *c; 2951 int ret, needlocks; 2952 2953 /* Get the synclists lock */ 2954 PCM_SG_LOCK(); 2955 2956 do { 2957 ret = 0; 2958 needlocks = 0; 2959 2960 /* Search for syncgroup by ID */ 2961 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2962 if (sg->id == sg_id) 2963 break; 2964 } 2965 2966 /* Return EINVAL if not found */ 2967 if (sg == NULL) { 2968 ret = EINVAL; 2969 break; 2970 } 2971 2972 /* Any removals resulting in an empty group should've handled this */ 2973 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2974 2975 /* 2976 * Attempt to lock all member channels - if any are already 2977 * locked, unlock those acquired, sleep for a bit, and try 2978 * again. 2979 */ 2980 SLIST_FOREACH(sm, &sg->members, link) { 2981 if (CHN_TRYLOCK(sm->ch) == 0) { 2982 int timo = hz * 5/1000; 2983 if (timo < 1) 2984 timo = 1; 2985 2986 /* Release all locked channels so far, retry */ 2987 SLIST_FOREACH(sm_tmp, &sg->members, link) { 2988 /* sm is the member already locked */ 2989 if (sm == sm_tmp) 2990 break; 2991 CHN_UNLOCK(sm_tmp->ch); 2992 } 2993 2994 /** @todo Is PRIBIO correct/ */ 2995 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 2996 PRIBIO | PCATCH, "pcmsg", timo); 2997 if (ret == EINTR || ret == ERESTART) 2998 break; 2999 3000 needlocks = 1; 3001 ret = 0; /* Assumes ret == EAGAIN... */ 3002 } 3003 } 3004 } while (needlocks && ret == 0); 3005 3006 /* Proceed only if no errors encountered. */ 3007 if (ret == 0) { 3008 /* Launch channels */ 3009 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 3010 SLIST_REMOVE_HEAD(&sg->members, link); 3011 3012 c = sm->ch; 3013 c->sm = NULL; 3014 chn_start(c, 1); 3015 c->flags &= ~CHN_F_NOTRIGGER; 3016 CHN_UNLOCK(c); 3017 3018 free(sm, M_DEVBUF); 3019 } 3020 3021 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3022 free(sg, M_DEVBUF); 3023 } 3024 3025 PCM_SG_UNLOCK(); 3026 3027 /* 3028 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3029 * first. 3030 */ 3031 if (ret == 0) 3032 free_unr(pcmsg_unrhdr, sg_id); 3033 3034 return (ret); 3035 } 3036 3037 /** 3038 * @brief Handler for SNDCTL_DSP_POLICY 3039 * 3040 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3041 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3042 * specifying those two parameters, s/he simply selects a number from 0..10 3043 * which corresponds to a buffer size. Smaller numbers request smaller 3044 * buffers with lower latencies (at greater overhead from more frequent 3045 * interrupts), while greater numbers behave in the opposite manner. 3046 * 3047 * The 4Front spec states that a value of 5 should be the default. However, 3048 * this implementation deviates slightly by using a linear scale without 3049 * consulting drivers. I.e., even though drivers may have different default 3050 * buffer sizes, a policy argument of 5 will have the same result across 3051 * all drivers. 3052 * 3053 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3054 * more information. 3055 * 3056 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3057 * work with hardware drivers directly. 3058 * 3059 * @note PCM channel arguments must not be locked by caller. 3060 * 3061 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3062 * @param rdch " recording channel (optional; may be NULL) 3063 * @param policy Integer from [0:10] 3064 * 3065 * @retval 0 constant (for now) 3066 */ 3067 static int 3068 dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3069 { 3070 int ret; 3071 3072 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3073 return (EIO); 3074 3075 /* Default: success */ 3076 ret = 0; 3077 3078 if (rdch) { 3079 CHN_LOCK(rdch); 3080 ret = chn_setlatency(rdch, policy); 3081 CHN_UNLOCK(rdch); 3082 } 3083 3084 if (wrch && ret == 0) { 3085 CHN_LOCK(wrch); 3086 ret = chn_setlatency(wrch, policy); 3087 CHN_UNLOCK(wrch); 3088 } 3089 3090 if (ret) 3091 ret = EIO; 3092 3093 return (ret); 3094 } 3095 3096 /** 3097 * @brief Enable or disable "cooked" mode 3098 * 3099 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3100 * is the default, the sound system handles rate and format conversions 3101 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3102 * operates with 44100Hz/16bit/signed samples). 3103 * 3104 * Disabling cooked mode is intended for applications wanting to mmap() 3105 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3106 * feeder architecture, presumably to gain as much control over audio 3107 * hardware as possible. 3108 * 3109 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3110 * for more details. 3111 * 3112 * @param wrch playback channel (optional; may be NULL) 3113 * @param rdch recording channel (optional; may be NULL) 3114 * @param enabled 0 = raw mode, 1 = cooked mode 3115 * 3116 * @retval EINVAL Operation not yet supported. 3117 */ 3118 static int 3119 dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3120 { 3121 3122 /* 3123 * XXX I just don't get it. Why don't they call it 3124 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3125 * This is just plain so confusing, incoherent, 3126 * <insert any non-printable characters here>. 3127 */ 3128 if (!(enabled == 1 || enabled == 0)) 3129 return (EINVAL); 3130 3131 /* 3132 * I won't give in. I'm inverting its logic here and now. 3133 * Brag all you want, but "BITPERFECT" should be the better 3134 * term here. 3135 */ 3136 enabled ^= 0x00000001; 3137 3138 if (wrch != NULL) { 3139 CHN_LOCK(wrch); 3140 wrch->flags &= ~CHN_F_BITPERFECT; 3141 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3142 CHN_UNLOCK(wrch); 3143 } 3144 3145 if (rdch != NULL) { 3146 CHN_LOCK(rdch); 3147 rdch->flags &= ~CHN_F_BITPERFECT; 3148 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3149 CHN_UNLOCK(rdch); 3150 } 3151 3152 return (0); 3153 } 3154 3155 /** 3156 * @brief Retrieve channel interleaving order 3157 * 3158 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3159 * 3160 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3161 * for more details. 3162 * 3163 * @note As the ioctl definition is still under construction, FreeBSD 3164 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3165 * 3166 * @param wrch playback channel (optional; may be NULL) 3167 * @param rdch recording channel (optional; may be NULL) 3168 * @param map channel map (result will be stored there) 3169 * 3170 * @retval EINVAL Operation not yet supported. 3171 */ 3172 static int 3173 dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3174 { 3175 struct pcm_channel *ch; 3176 int ret; 3177 3178 ch = (wrch != NULL) ? wrch : rdch; 3179 if (ch != NULL) { 3180 CHN_LOCK(ch); 3181 ret = chn_oss_getorder(ch, map); 3182 CHN_UNLOCK(ch); 3183 } else 3184 ret = EINVAL; 3185 3186 return (ret); 3187 } 3188 3189 /** 3190 * @brief Specify channel interleaving order 3191 * 3192 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3193 * 3194 * @note As the ioctl definition is still under construction, FreeBSD 3195 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3196 * 3197 * @param wrch playback channel (optional; may be NULL) 3198 * @param rdch recording channel (optional; may be NULL) 3199 * @param map channel map 3200 * 3201 * @retval EINVAL Operation not yet supported. 3202 */ 3203 static int 3204 dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3205 { 3206 int ret; 3207 3208 ret = 0; 3209 3210 if (wrch != NULL) { 3211 CHN_LOCK(wrch); 3212 ret = chn_oss_setorder(wrch, map); 3213 CHN_UNLOCK(wrch); 3214 } 3215 3216 if (ret == 0 && rdch != NULL) { 3217 CHN_LOCK(rdch); 3218 ret = chn_oss_setorder(rdch, map); 3219 CHN_UNLOCK(rdch); 3220 } 3221 3222 return (ret); 3223 } 3224 3225 static int 3226 dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3227 int *mask) 3228 { 3229 struct pcm_channel *ch; 3230 uint32_t chnmask; 3231 int ret; 3232 3233 chnmask = 0; 3234 ch = (wrch != NULL) ? wrch : rdch; 3235 3236 if (ch != NULL) { 3237 CHN_LOCK(ch); 3238 ret = chn_oss_getmask(ch, &chnmask); 3239 CHN_UNLOCK(ch); 3240 } else 3241 ret = EINVAL; 3242 3243 if (ret == 0) 3244 *mask = chnmask; 3245 3246 return (ret); 3247 } 3248 3249 #ifdef OSSV4_EXPERIMENT 3250 /** 3251 * @brief Retrieve an audio device's label 3252 * 3253 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3254 * 3255 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3256 * for more details. 3257 * 3258 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3259 * consoles) can show variable "labels" for certain controls. By default 3260 * the application name (say quake) is shown as the label but 3261 * applications may change the labels themselves." 3262 * 3263 * @note As the ioctl definition is still under construction, FreeBSD 3264 * does not currently support @c SNDCTL_GETLABEL. 3265 * 3266 * @param wrch playback channel (optional; may be NULL) 3267 * @param rdch recording channel (optional; may be NULL) 3268 * @param label label gets copied here 3269 * 3270 * @retval EINVAL Operation not yet supported. 3271 */ 3272 static int 3273 dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3274 { 3275 return (EINVAL); 3276 } 3277 3278 /** 3279 * @brief Specify an audio device's label 3280 * 3281 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3282 * comments for @c dsp_oss_getlabel immediately above. 3283 * 3284 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3285 * for more details. 3286 * 3287 * @note As the ioctl definition is still under construction, FreeBSD 3288 * does not currently support SNDCTL_SETLABEL. 3289 * 3290 * @param wrch playback channel (optional; may be NULL) 3291 * @param rdch recording channel (optional; may be NULL) 3292 * @param label label gets copied from here 3293 * 3294 * @retval EINVAL Operation not yet supported. 3295 */ 3296 static int 3297 dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3298 { 3299 return (EINVAL); 3300 } 3301 3302 /** 3303 * @brief Retrieve name of currently played song 3304 * 3305 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3306 * tell the system the name of the currently playing song, which would be 3307 * visible in @c /dev/sndstat. 3308 * 3309 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3310 * for more details. 3311 * 3312 * @note As the ioctl definition is still under construction, FreeBSD 3313 * does not currently support SNDCTL_GETSONG. 3314 * 3315 * @param wrch playback channel (optional; may be NULL) 3316 * @param rdch recording channel (optional; may be NULL) 3317 * @param song song name gets copied here 3318 * 3319 * @retval EINVAL Operation not yet supported. 3320 */ 3321 static int 3322 dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 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_SETSONG 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_SETSONG.html 3335 * for more details. 3336 * 3337 * @note As the ioctl definition is still under construction, FreeBSD 3338 * does not currently support SNDCTL_SETSONG. 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 from here 3343 * 3344 * @retval EINVAL Operation not yet supported. 3345 */ 3346 static int 3347 dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3348 { 3349 return (EINVAL); 3350 } 3351 3352 /** 3353 * @brief Rename a device 3354 * 3355 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3356 * 3357 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3358 * more details. 3359 * 3360 * From Hannu@4Front: "This call is used to change the device name 3361 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3362 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3363 * name depending on the current context (for example 'OSS virtual wave table 3364 * synth' or 'VoIP link to London')." 3365 * 3366 * @note As the ioctl definition is still under construction, FreeBSD 3367 * does not currently support SNDCTL_SETNAME. 3368 * 3369 * @param wrch playback channel (optional; may be NULL) 3370 * @param rdch recording channel (optional; may be NULL) 3371 * @param name new device name gets copied from here 3372 * 3373 * @retval EINVAL Operation not yet supported. 3374 */ 3375 static int 3376 dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3377 { 3378 return (EINVAL); 3379 } 3380 #endif /* !OSSV4_EXPERIMENT */
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