1 /*- 2 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 3 * Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006 4 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifdef HAVE_KERNEL_OPTION_HEADERS 30 #include "opt_snd.h" 31 #endif 32 33 #include <dev/sound/pcm/sound.h> 34 #include <sys/ctype.h> 35 #include <sys/sysent.h> 36 37 #include <vm/vm.h> 38 #include <vm/vm_object.h> 39 #include <vm/vm_page.h> 40 #include <vm/vm_pager.h> 41 42 SND_DECLARE_FILE("$FreeBSD$"); 43 44 static int dsp_mmap_allow_prot_exec = 0; 45 SYSCTL_INT(_hw_snd, OID_AUTO, compat_linux_mmap, CTLFLAG_RW, 46 &dsp_mmap_allow_prot_exec, 0, 47 "linux mmap compatibility (-1=force disable 0=auto 1=force enable)"); 48 49 struct dsp_cdevinfo { 50 struct pcm_channel *rdch, *wrch; 51 struct pcm_channel *volch; 52 int busy, simplex; 53 TAILQ_ENTRY(dsp_cdevinfo) link; 54 }; 55 56 #define PCM_RDCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->rdch) 57 #define PCM_WRCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->wrch) 58 #define PCM_VOLCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->volch) 59 #define PCM_SIMPLEX(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->simplex) 60 61 #define DSP_CDEVINFO_CACHESIZE 8 62 63 #define DSP_REGISTERED(x, y) (PCM_REGISTERED(x) && \ 64 (y) != NULL && (y)->si_drv1 != NULL) 65 66 #define OLDPCM_IOCTL 67 68 static d_open_t dsp_open; 69 static d_close_t dsp_close; 70 static d_read_t dsp_read; 71 static d_write_t dsp_write; 72 static d_ioctl_t dsp_ioctl; 73 static d_poll_t dsp_poll; 74 static d_mmap_t dsp_mmap; 75 static d_mmap_single_t dsp_mmap_single; 76 77 struct cdevsw dsp_cdevsw = { 78 .d_version = D_VERSION, 79 .d_open = dsp_open, 80 .d_close = dsp_close, 81 .d_read = dsp_read, 82 .d_write = dsp_write, 83 .d_ioctl = dsp_ioctl, 84 .d_poll = dsp_poll, 85 .d_mmap = dsp_mmap, 86 .d_mmap_single = dsp_mmap_single, 87 .d_name = "dsp", 88 }; 89 90 static eventhandler_tag dsp_ehtag = NULL; 91 static int dsp_umax = -1; 92 static int dsp_cmax = -1; 93 94 static int dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group); 95 static int dsp_oss_syncstart(int sg_id); 96 static int dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy); 97 static int dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled); 98 static int dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 99 static int dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 100 static int dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, int *mask); 101 #ifdef OSSV4_EXPERIMENT 102 static int dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 103 static int dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 104 static int dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 105 static int dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 106 static int dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name); 107 #endif 108 109 static struct snddev_info * 110 dsp_get_info(struct cdev *dev) 111 { 112 return (devclass_get_softc(pcm_devclass, PCMUNIT(dev))); 113 } 114 115 static uint32_t 116 dsp_get_flags(struct cdev *dev) 117 { 118 device_t bdev; 119 120 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 121 122 return ((bdev != NULL) ? pcm_getflags(bdev) : 0xffffffff); 123 } 124 125 static void 126 dsp_set_flags(struct cdev *dev, uint32_t flags) 127 { 128 device_t bdev; 129 130 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 131 132 if (bdev != NULL) 133 pcm_setflags(bdev, flags); 134 } 135 136 /* 137 * return the channels associated with an open device instance. 138 * lock channels specified. 139 */ 140 static int 141 getchns(struct cdev *dev, struct pcm_channel **rdch, struct pcm_channel **wrch, 142 uint32_t prio) 143 { 144 struct snddev_info *d; 145 struct pcm_channel *ch; 146 uint32_t flags; 147 148 if (PCM_SIMPLEX(dev) != 0) { 149 d = dsp_get_info(dev); 150 if (!PCM_REGISTERED(d)) 151 return (ENXIO); 152 PCM_LOCK(d); 153 PCM_WAIT(d); 154 PCM_ACQUIRE(d); 155 /* 156 * Note: order is important - 157 * pcm flags -> prio query flags -> wild guess 158 */ 159 ch = NULL; 160 flags = dsp_get_flags(dev); 161 if (flags & SD_F_PRIO_WR) { 162 ch = PCM_RDCH(dev); 163 PCM_RDCH(dev) = NULL; 164 } else if (flags & SD_F_PRIO_RD) { 165 ch = PCM_WRCH(dev); 166 PCM_WRCH(dev) = NULL; 167 } else if (prio & SD_F_PRIO_WR) { 168 ch = PCM_RDCH(dev); 169 PCM_RDCH(dev) = NULL; 170 flags |= SD_F_PRIO_WR; 171 } else if (prio & SD_F_PRIO_RD) { 172 ch = PCM_WRCH(dev); 173 PCM_WRCH(dev) = NULL; 174 flags |= SD_F_PRIO_RD; 175 } else if (PCM_WRCH(dev) != NULL) { 176 ch = PCM_RDCH(dev); 177 PCM_RDCH(dev) = NULL; 178 flags |= SD_F_PRIO_WR; 179 } else if (PCM_RDCH(dev) != NULL) { 180 ch = PCM_WRCH(dev); 181 PCM_WRCH(dev) = NULL; 182 flags |= SD_F_PRIO_RD; 183 } 184 PCM_SIMPLEX(dev) = 0; 185 dsp_set_flags(dev, flags); 186 if (ch != NULL) { 187 CHN_LOCK(ch); 188 pcm_chnref(ch, -1); 189 pcm_chnrelease(ch); 190 } 191 PCM_RELEASE(d); 192 PCM_UNLOCK(d); 193 } 194 195 *rdch = PCM_RDCH(dev); 196 *wrch = PCM_WRCH(dev); 197 198 if (*rdch != NULL && (prio & SD_F_PRIO_RD)) 199 CHN_LOCK(*rdch); 200 if (*wrch != NULL && (prio & SD_F_PRIO_WR)) 201 CHN_LOCK(*wrch); 202 203 return (0); 204 } 205 206 /* unlock specified channels */ 207 static void 208 relchns(struct cdev *dev, struct pcm_channel *rdch, struct pcm_channel *wrch, 209 uint32_t prio) 210 { 211 if (wrch != NULL && (prio & SD_F_PRIO_WR)) 212 CHN_UNLOCK(wrch); 213 if (rdch != NULL && (prio & SD_F_PRIO_RD)) 214 CHN_UNLOCK(rdch); 215 } 216 217 static void 218 dsp_cdevinfo_alloc(struct cdev *dev, 219 struct pcm_channel *rdch, struct pcm_channel *wrch, 220 struct pcm_channel *volch) 221 { 222 struct snddev_info *d; 223 struct dsp_cdevinfo *cdi; 224 int simplex; 225 226 d = dsp_get_info(dev); 227 228 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 == NULL && 229 ((rdch == NULL && wrch == NULL) || rdch != wrch), 230 ("bogus %s(), what are you trying to accomplish here?", __func__)); 231 PCM_BUSYASSERT(d); 232 PCM_LOCKASSERT(d); 233 234 simplex = (dsp_get_flags(dev) & SD_F_SIMPLEX) ? 1 : 0; 235 236 /* 237 * Scan for free instance entry and put it into the end of list. 238 * Create new one if necessary. 239 */ 240 TAILQ_FOREACH(cdi, &d->dsp_cdevinfo_pool, link) { 241 if (cdi->busy != 0) 242 break; 243 cdi->rdch = rdch; 244 cdi->wrch = wrch; 245 cdi->volch = volch; 246 cdi->simplex = simplex; 247 cdi->busy = 1; 248 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 249 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 250 dev->si_drv1 = cdi; 251 return; 252 } 253 PCM_UNLOCK(d); 254 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 255 PCM_LOCK(d); 256 cdi->rdch = rdch; 257 cdi->wrch = wrch; 258 cdi->volch = volch; 259 cdi->simplex = simplex; 260 cdi->busy = 1; 261 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 262 dev->si_drv1 = cdi; 263 } 264 265 static void 266 dsp_cdevinfo_free(struct cdev *dev) 267 { 268 struct snddev_info *d; 269 struct dsp_cdevinfo *cdi, *tmp; 270 uint32_t flags; 271 int i; 272 273 d = dsp_get_info(dev); 274 275 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 != NULL && 276 PCM_RDCH(dev) == NULL && PCM_WRCH(dev) == NULL && 277 PCM_VOLCH(dev) == NULL, 278 ("bogus %s(), what are you trying to accomplish here?", __func__)); 279 PCM_BUSYASSERT(d); 280 PCM_LOCKASSERT(d); 281 282 cdi = dev->si_drv1; 283 dev->si_drv1 = NULL; 284 cdi->rdch = NULL; 285 cdi->wrch = NULL; 286 cdi->volch = NULL; 287 cdi->simplex = 0; 288 cdi->busy = 0; 289 290 /* 291 * Once it is free, move it back to the beginning of list for 292 * faster new entry allocation. 293 */ 294 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 295 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 296 297 /* 298 * Scan the list, cache free entries up to DSP_CDEVINFO_CACHESIZE. 299 * Reset simplex flags. 300 */ 301 flags = dsp_get_flags(dev) & ~SD_F_PRIO_SET; 302 i = DSP_CDEVINFO_CACHESIZE; 303 TAILQ_FOREACH_SAFE(cdi, &d->dsp_cdevinfo_pool, link, tmp) { 304 if (cdi->busy != 0) { 305 if (cdi->simplex == 0) { 306 if (cdi->rdch != NULL) 307 flags |= SD_F_PRIO_RD; 308 if (cdi->wrch != NULL) 309 flags |= SD_F_PRIO_WR; 310 } 311 } else { 312 if (i == 0) { 313 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 314 free(cdi, M_DEVBUF); 315 } else 316 i--; 317 } 318 } 319 dsp_set_flags(dev, flags); 320 } 321 322 void 323 dsp_cdevinfo_init(struct snddev_info *d) 324 { 325 struct dsp_cdevinfo *cdi; 326 int i; 327 328 KASSERT(d != NULL, ("NULL snddev_info")); 329 PCM_BUSYASSERT(d); 330 PCM_UNLOCKASSERT(d); 331 332 TAILQ_INIT(&d->dsp_cdevinfo_pool); 333 for (i = 0; i < DSP_CDEVINFO_CACHESIZE; i++) { 334 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 335 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 336 } 337 } 338 339 void 340 dsp_cdevinfo_flush(struct snddev_info *d) 341 { 342 struct dsp_cdevinfo *cdi, *tmp; 343 344 KASSERT(d != NULL, ("NULL snddev_info")); 345 PCM_BUSYASSERT(d); 346 PCM_UNLOCKASSERT(d); 347 348 cdi = TAILQ_FIRST(&d->dsp_cdevinfo_pool); 349 while (cdi != NULL) { 350 tmp = TAILQ_NEXT(cdi, link); 351 free(cdi, M_DEVBUF); 352 cdi = tmp; 353 } 354 TAILQ_INIT(&d->dsp_cdevinfo_pool); 355 } 356 357 /* duplex / simplex cdev type */ 358 enum { 359 DSP_CDEV_TYPE_RDONLY, /* simplex read-only (record) */ 360 DSP_CDEV_TYPE_WRONLY, /* simplex write-only (play) */ 361 DSP_CDEV_TYPE_RDWR /* duplex read, write, or both */ 362 }; 363 364 enum { 365 DSP_CDEV_VOLCTL_NONE, 366 DSP_CDEV_VOLCTL_READ, 367 DSP_CDEV_VOLCTL_WRITE 368 }; 369 370 #define DSP_F_VALID(x) ((x) & (FREAD | FWRITE)) 371 #define DSP_F_DUPLEX(x) (((x) & (FREAD | FWRITE)) == (FREAD | FWRITE)) 372 #define DSP_F_SIMPLEX(x) (!DSP_F_DUPLEX(x)) 373 #define DSP_F_READ(x) ((x) & FREAD) 374 #define DSP_F_WRITE(x) ((x) & FWRITE) 375 376 static const struct { 377 int type; 378 char *name; 379 char *sep; 380 char *alias; 381 int use_sep; 382 int hw; 383 int max; 384 int volctl; 385 uint32_t fmt, spd; 386 int query; 387 } dsp_cdevs[] = { 388 { SND_DEV_DSP, "dsp", ".", NULL, 0, 0, 0, 0, 389 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 390 DSP_CDEV_TYPE_RDWR }, 391 { SND_DEV_AUDIO, "audio", ".", NULL, 0, 0, 0, 0, 392 SND_FORMAT(AFMT_MU_LAW, 1, 0), DSP_DEFAULT_SPEED, 393 DSP_CDEV_TYPE_RDWR }, 394 { SND_DEV_DSP16, "dspW", ".", NULL, 0, 0, 0, 0, 395 SND_FORMAT(AFMT_S16_LE, 1, 0), DSP_DEFAULT_SPEED, 396 DSP_CDEV_TYPE_RDWR }, 397 { SND_DEV_DSPHW_PLAY, "dsp", ".p", NULL, 1, 1, SND_MAXHWCHAN, 1, 398 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 399 { SND_DEV_DSPHW_VPLAY, "dsp", ".vp", NULL, 1, 1, SND_MAXVCHANS, 1, 400 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 401 { SND_DEV_DSPHW_REC, "dsp", ".r", NULL, 1, 1, SND_MAXHWCHAN, 1, 402 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 403 { SND_DEV_DSPHW_VREC, "dsp", ".vr", NULL, 1, 1, SND_MAXVCHANS, 1, 404 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 405 { SND_DEV_DSPHW_CD, "dspcd", ".", NULL, 0, 0, 0, 0, 406 SND_FORMAT(AFMT_S16_LE, 2, 0), 44100, DSP_CDEV_TYPE_RDWR }, 407 /* Low priority, OSSv4 aliases. */ 408 { SND_DEV_DSP, "dsp_ac3", ".", "dsp", 0, 0, 0, 0, 409 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 410 DSP_CDEV_TYPE_RDWR }, 411 { SND_DEV_DSP, "dsp_mmap", ".", "dsp", 0, 0, 0, 0, 412 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 413 DSP_CDEV_TYPE_RDWR }, 414 { SND_DEV_DSP, "dsp_multich", ".", "dsp", 0, 0, 0, 0, 415 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 416 DSP_CDEV_TYPE_RDWR }, 417 { SND_DEV_DSP, "dsp_spdifout", ".", "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_spdifin", ".", "dsp", 0, 0, 0, 0, 421 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 422 DSP_CDEV_TYPE_RDWR }, 423 }; 424 425 #define DSP_FIXUP_ERROR() do { \ 426 prio = dsp_get_flags(i_dev); \ 427 if (!DSP_F_VALID(flags)) \ 428 error = EINVAL; \ 429 if (!DSP_F_DUPLEX(flags) && \ 430 ((DSP_F_READ(flags) && d->reccount == 0) || \ 431 (DSP_F_WRITE(flags) && d->playcount == 0))) \ 432 error = ENOTSUP; \ 433 else if (!DSP_F_DUPLEX(flags) && (prio & SD_F_SIMPLEX) && \ 434 ((DSP_F_READ(flags) && (prio & SD_F_PRIO_WR)) || \ 435 (DSP_F_WRITE(flags) && (prio & SD_F_PRIO_RD)))) \ 436 error = EBUSY; \ 437 else if (DSP_REGISTERED(d, i_dev)) \ 438 error = EBUSY; \ 439 } while (0) 440 441 static int 442 dsp_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 443 { 444 struct pcm_channel *rdch, *wrch; 445 struct snddev_info *d; 446 uint32_t fmt, spd, prio, volctl; 447 int i, error, rderror, wrerror, devtype, wdevunit, rdevunit; 448 449 /* Kind of impossible.. */ 450 if (i_dev == NULL || td == NULL) 451 return (ENODEV); 452 453 d = dsp_get_info(i_dev); 454 if (!PCM_REGISTERED(d)) 455 return (EBADF); 456 457 PCM_GIANT_ENTER(d); 458 459 /* Lock snddev so nobody else can monkey with it. */ 460 PCM_LOCK(d); 461 PCM_WAIT(d); 462 463 /* 464 * Try to acquire cloned device before someone else pick it. 465 * ENODEV means this is not a cloned droids. 466 */ 467 error = snd_clone_acquire(i_dev); 468 if (!(error == 0 || error == ENODEV)) { 469 DSP_FIXUP_ERROR(); 470 PCM_UNLOCK(d); 471 PCM_GIANT_EXIT(d); 472 return (error); 473 } 474 475 error = 0; 476 DSP_FIXUP_ERROR(); 477 478 if (error != 0) { 479 (void)snd_clone_release(i_dev); 480 PCM_UNLOCK(d); 481 PCM_GIANT_EXIT(d); 482 return (error); 483 } 484 485 /* 486 * That is just enough. Acquire and unlock pcm lock so 487 * the other will just have to wait until we finish doing 488 * everything. 489 */ 490 PCM_ACQUIRE(d); 491 PCM_UNLOCK(d); 492 493 devtype = PCMDEV(i_dev); 494 wdevunit = -1; 495 rdevunit = -1; 496 fmt = 0; 497 spd = 0; 498 volctl = DSP_CDEV_VOLCTL_NONE; 499 500 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 501 if (devtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 502 continue; 503 /* 504 * Volume control only valid for DSPHW devices, 505 * and it must be opened in opposite direction be it 506 * simplex or duplex. Anything else will be handled 507 * as usual. 508 */ 509 if (dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY) { 510 if (dsp_cdevs[i].volctl != 0 && 511 DSP_F_READ(flags)) { 512 volctl = DSP_CDEV_VOLCTL_WRITE; 513 flags &= ~FREAD; 514 flags |= FWRITE; 515 } 516 if (DSP_F_READ(flags)) { 517 (void)snd_clone_release(i_dev); 518 PCM_RELEASE_QUICK(d); 519 PCM_GIANT_EXIT(d); 520 return (ENOTSUP); 521 } 522 wdevunit = dev2unit(i_dev); 523 } else if (dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY) { 524 if (dsp_cdevs[i].volctl != 0 && 525 DSP_F_WRITE(flags)) { 526 volctl = DSP_CDEV_VOLCTL_READ; 527 flags &= ~FWRITE; 528 flags |= FREAD; 529 } 530 if (DSP_F_WRITE(flags)) { 531 (void)snd_clone_release(i_dev); 532 PCM_RELEASE_QUICK(d); 533 PCM_GIANT_EXIT(d); 534 return (ENOTSUP); 535 } 536 rdevunit = dev2unit(i_dev); 537 } 538 fmt = dsp_cdevs[i].fmt; 539 spd = dsp_cdevs[i].spd; 540 break; 541 } 542 543 /* No matching devtype? */ 544 if (fmt == 0 || spd == 0) 545 panic("impossible devtype %d", devtype); 546 547 rdch = NULL; 548 wrch = NULL; 549 rderror = 0; 550 wrerror = 0; 551 552 /* 553 * if we get here, the open request is valid- either: 554 * * we were previously not open 555 * * we were open for play xor record and the opener wants 556 * the non-open direction 557 */ 558 if (DSP_F_READ(flags)) { 559 /* open for read */ 560 rderror = pcm_chnalloc(d, &rdch, PCMDIR_REC, 561 td->td_proc->p_pid, td->td_proc->p_comm, rdevunit); 562 563 if (rderror == 0 && chn_reset(rdch, fmt, spd) != 0) 564 rderror = ENXIO; 565 566 if (volctl == DSP_CDEV_VOLCTL_READ) 567 rderror = 0; 568 569 if (rderror != 0) { 570 if (rdch != NULL) 571 pcm_chnrelease(rdch); 572 if (!DSP_F_DUPLEX(flags)) { 573 (void)snd_clone_release(i_dev); 574 PCM_RELEASE_QUICK(d); 575 PCM_GIANT_EXIT(d); 576 return (rderror); 577 } 578 rdch = NULL; 579 } else if (volctl == DSP_CDEV_VOLCTL_READ) { 580 if (rdch != NULL) { 581 pcm_chnref(rdch, 1); 582 pcm_chnrelease(rdch); 583 } 584 } else { 585 if (flags & O_NONBLOCK) 586 rdch->flags |= CHN_F_NBIO; 587 if (flags & O_EXCL) 588 rdch->flags |= CHN_F_EXCLUSIVE; 589 pcm_chnref(rdch, 1); 590 if (volctl == DSP_CDEV_VOLCTL_NONE) 591 chn_vpc_reset(rdch, SND_VOL_C_PCM, 0); 592 CHN_UNLOCK(rdch); 593 } 594 } 595 596 if (DSP_F_WRITE(flags)) { 597 /* open for write */ 598 wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY, 599 td->td_proc->p_pid, td->td_proc->p_comm, wdevunit); 600 601 if (wrerror == 0 && chn_reset(wrch, fmt, spd) != 0) 602 wrerror = ENXIO; 603 604 if (volctl == DSP_CDEV_VOLCTL_WRITE) 605 wrerror = 0; 606 607 if (wrerror != 0) { 608 if (wrch != NULL) 609 pcm_chnrelease(wrch); 610 if (!DSP_F_DUPLEX(flags)) { 611 if (rdch != NULL) { 612 /* 613 * Lock, deref and release previously 614 * created record channel 615 */ 616 CHN_LOCK(rdch); 617 pcm_chnref(rdch, -1); 618 pcm_chnrelease(rdch); 619 } 620 (void)snd_clone_release(i_dev); 621 PCM_RELEASE_QUICK(d); 622 PCM_GIANT_EXIT(d); 623 return (wrerror); 624 } 625 wrch = NULL; 626 } else if (volctl == DSP_CDEV_VOLCTL_WRITE) { 627 if (wrch != NULL) { 628 pcm_chnref(wrch, 1); 629 pcm_chnrelease(wrch); 630 } 631 } else { 632 if (flags & O_NONBLOCK) 633 wrch->flags |= CHN_F_NBIO; 634 if (flags & O_EXCL) 635 wrch->flags |= CHN_F_EXCLUSIVE; 636 pcm_chnref(wrch, 1); 637 if (volctl == DSP_CDEV_VOLCTL_NONE) 638 chn_vpc_reset(wrch, SND_VOL_C_PCM, 0); 639 CHN_UNLOCK(wrch); 640 } 641 } 642 643 644 PCM_LOCK(d); 645 646 /* 647 * We're done. Allocate channels information for this cdev. 648 */ 649 switch (volctl) { 650 case DSP_CDEV_VOLCTL_READ: 651 KASSERT(wrch == NULL, ("wrch=%p not null!", wrch)); 652 dsp_cdevinfo_alloc(i_dev, NULL, NULL, rdch); 653 break; 654 case DSP_CDEV_VOLCTL_WRITE: 655 KASSERT(rdch == NULL, ("rdch=%p not null!", rdch)); 656 dsp_cdevinfo_alloc(i_dev, NULL, NULL, wrch); 657 break; 658 case DSP_CDEV_VOLCTL_NONE: 659 default: 660 if (wrch == NULL && rdch == NULL) { 661 (void)snd_clone_release(i_dev); 662 PCM_RELEASE(d); 663 PCM_UNLOCK(d); 664 PCM_GIANT_EXIT(d); 665 if (wrerror != 0) 666 return (wrerror); 667 if (rderror != 0) 668 return (rderror); 669 return (EINVAL); 670 } 671 dsp_cdevinfo_alloc(i_dev, rdch, wrch, NULL); 672 if (rdch != NULL) 673 CHN_INSERT_HEAD(d, rdch, channels.pcm.opened); 674 if (wrch != NULL) 675 CHN_INSERT_HEAD(d, wrch, channels.pcm.opened); 676 break; 677 } 678 679 /* 680 * Increase clone refcount for its automatic garbage collector. 681 */ 682 (void)snd_clone_ref(i_dev); 683 684 PCM_RELEASE(d); 685 PCM_UNLOCK(d); 686 687 PCM_GIANT_LEAVE(d); 688 689 return (0); 690 } 691 692 static int 693 dsp_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 694 { 695 struct pcm_channel *rdch, *wrch, *volch; 696 struct snddev_info *d; 697 int sg_ids, rdref, wdref; 698 699 d = dsp_get_info(i_dev); 700 if (!DSP_REGISTERED(d, i_dev)) 701 return (EBADF); 702 703 PCM_GIANT_ENTER(d); 704 705 PCM_LOCK(d); 706 PCM_WAIT(d); 707 PCM_ACQUIRE(d); 708 709 rdch = PCM_RDCH(i_dev); 710 wrch = PCM_WRCH(i_dev); 711 volch = PCM_VOLCH(i_dev); 712 713 PCM_RDCH(i_dev) = NULL; 714 PCM_WRCH(i_dev) = NULL; 715 PCM_VOLCH(i_dev) = NULL; 716 717 rdref = -1; 718 wdref = -1; 719 720 if (volch != NULL) { 721 if (volch == rdch) 722 rdref--; 723 else if (volch == wrch) 724 wdref--; 725 else { 726 CHN_LOCK(volch); 727 pcm_chnref(volch, -1); 728 CHN_UNLOCK(volch); 729 } 730 } 731 732 if (rdch != NULL) 733 CHN_REMOVE(d, rdch, channels.pcm.opened); 734 if (wrch != NULL) 735 CHN_REMOVE(d, wrch, channels.pcm.opened); 736 737 if (rdch != NULL || wrch != NULL) { 738 PCM_UNLOCK(d); 739 if (rdch != NULL) { 740 /* 741 * The channel itself need not be locked because: 742 * a) Adding a channel to a syncgroup happens only 743 * in dsp_ioctl(), which cannot run concurrently 744 * to dsp_close(). 745 * b) The syncmember pointer (sm) is protected by 746 * the global syncgroup list lock. 747 * c) A channel can't just disappear, invalidating 748 * pointers, unless it's closed/dereferenced 749 * first. 750 */ 751 PCM_SG_LOCK(); 752 sg_ids = chn_syncdestroy(rdch); 753 PCM_SG_UNLOCK(); 754 if (sg_ids != 0) 755 free_unr(pcmsg_unrhdr, sg_ids); 756 757 CHN_LOCK(rdch); 758 pcm_chnref(rdch, rdref); 759 chn_abort(rdch); /* won't sleep */ 760 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 761 CHN_F_DEAD | CHN_F_EXCLUSIVE); 762 chn_reset(rdch, 0, 0); 763 pcm_chnrelease(rdch); 764 } 765 if (wrch != NULL) { 766 /* 767 * Please see block above. 768 */ 769 PCM_SG_LOCK(); 770 sg_ids = chn_syncdestroy(wrch); 771 PCM_SG_UNLOCK(); 772 if (sg_ids != 0) 773 free_unr(pcmsg_unrhdr, sg_ids); 774 775 CHN_LOCK(wrch); 776 pcm_chnref(wrch, wdref); 777 chn_flush(wrch); /* may sleep */ 778 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 779 CHN_F_DEAD | CHN_F_EXCLUSIVE); 780 chn_reset(wrch, 0, 0); 781 pcm_chnrelease(wrch); 782 } 783 PCM_LOCK(d); 784 } 785 786 dsp_cdevinfo_free(i_dev); 787 /* 788 * Release clone busy state and unref it so the automatic 789 * garbage collector will get the hint and do the remaining 790 * cleanup process. 791 */ 792 (void)snd_clone_release(i_dev); 793 794 /* 795 * destroy_dev() might sleep, so release pcm lock 796 * here and rely on pcm cv serialization. 797 */ 798 PCM_UNLOCK(d); 799 (void)snd_clone_unref(i_dev); 800 PCM_LOCK(d); 801 802 PCM_RELEASE(d); 803 PCM_UNLOCK(d); 804 805 PCM_GIANT_LEAVE(d); 806 807 return (0); 808 } 809 810 static __inline int 811 dsp_io_ops(struct cdev *i_dev, struct uio *buf) 812 { 813 struct snddev_info *d; 814 struct pcm_channel **ch, *rdch, *wrch; 815 int (*chn_io)(struct pcm_channel *, struct uio *); 816 int prio, ret; 817 pid_t runpid; 818 819 KASSERT(i_dev != NULL && buf != NULL && 820 (buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE), 821 ("%s(): io train wreck!", __func__)); 822 823 d = dsp_get_info(i_dev); 824 if (!DSP_REGISTERED(d, i_dev)) 825 return (EBADF); 826 827 PCM_GIANT_ENTER(d); 828 829 switch (buf->uio_rw) { 830 case UIO_READ: 831 prio = SD_F_PRIO_RD; 832 ch = &rdch; 833 chn_io = chn_read; 834 break; 835 case UIO_WRITE: 836 prio = SD_F_PRIO_WR; 837 ch = &wrch; 838 chn_io = chn_write; 839 break; 840 default: 841 panic("invalid/corrupted uio direction: %d", buf->uio_rw); 842 break; 843 } 844 845 rdch = NULL; 846 wrch = NULL; 847 runpid = buf->uio_td->td_proc->p_pid; 848 849 getchns(i_dev, &rdch, &wrch, prio); 850 851 if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) { 852 PCM_GIANT_EXIT(d); 853 return (EBADF); 854 } 855 856 if (((*ch)->flags & (CHN_F_MMAP | CHN_F_DEAD)) || 857 (((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) { 858 relchns(i_dev, rdch, wrch, prio); 859 PCM_GIANT_EXIT(d); 860 return (EINVAL); 861 } else if (!((*ch)->flags & CHN_F_RUNNING)) { 862 (*ch)->flags |= CHN_F_RUNNING; 863 (*ch)->pid = runpid; 864 } 865 866 /* 867 * chn_read/write must give up channel lock in order to copy bytes 868 * from/to userland, so up the "in progress" counter to make sure 869 * someone else doesn't come along and muss up the buffer. 870 */ 871 ++(*ch)->inprog; 872 ret = chn_io(*ch, buf); 873 --(*ch)->inprog; 874 875 CHN_BROADCAST(&(*ch)->cv); 876 877 relchns(i_dev, rdch, wrch, prio); 878 879 PCM_GIANT_LEAVE(d); 880 881 return (ret); 882 } 883 884 static int 885 dsp_read(struct cdev *i_dev, struct uio *buf, int flag) 886 { 887 return (dsp_io_ops(i_dev, buf)); 888 } 889 890 static int 891 dsp_write(struct cdev *i_dev, struct uio *buf, int flag) 892 { 893 return (dsp_io_ops(i_dev, buf)); 894 } 895 896 static int 897 dsp_get_volume_channel(struct cdev *dev, struct pcm_channel **volch) 898 { 899 struct snddev_info *d; 900 struct pcm_channel *c; 901 int unit; 902 903 KASSERT(dev != NULL && volch != NULL, 904 ("%s(): NULL query dev=%p volch=%p", __func__, dev, volch)); 905 906 d = dsp_get_info(dev); 907 if (!PCM_REGISTERED(d)) { 908 *volch = NULL; 909 return (EINVAL); 910 } 911 912 PCM_UNLOCKASSERT(d); 913 914 *volch = NULL; 915 916 c = PCM_VOLCH(dev); 917 if (c != NULL) { 918 if (!(c->feederflags & (1 << FEEDER_VOLUME))) 919 return (-1); 920 *volch = c; 921 return (0); 922 } 923 924 PCM_LOCK(d); 925 PCM_WAIT(d); 926 PCM_ACQUIRE(d); 927 928 unit = dev2unit(dev); 929 930 CHN_FOREACH(c, d, channels.pcm) { 931 CHN_LOCK(c); 932 if (c->unit != unit) { 933 CHN_UNLOCK(c); 934 continue; 935 } 936 *volch = c; 937 pcm_chnref(c, 1); 938 PCM_VOLCH(dev) = c; 939 CHN_UNLOCK(c); 940 PCM_RELEASE(d); 941 PCM_UNLOCK(d); 942 return ((c->feederflags & (1 << FEEDER_VOLUME)) ? 0 : -1); 943 } 944 945 PCM_RELEASE(d); 946 PCM_UNLOCK(d); 947 948 return (EINVAL); 949 } 950 951 static int 952 dsp_ioctl_channel(struct cdev *dev, struct pcm_channel *volch, u_long cmd, 953 caddr_t arg) 954 { 955 struct snddev_info *d; 956 struct pcm_channel *rdch, *wrch; 957 int j, devtype, ret; 958 959 d = dsp_get_info(dev); 960 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 961 return (-1); 962 963 PCM_UNLOCKASSERT(d); 964 965 j = cmd & 0xff; 966 967 rdch = PCM_RDCH(dev); 968 wrch = PCM_WRCH(dev); 969 970 /* No specific channel, look into cache */ 971 if (volch == NULL) 972 volch = PCM_VOLCH(dev); 973 974 /* Look harder */ 975 if (volch == NULL) { 976 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 977 volch = rdch; 978 else if (j == SOUND_MIXER_PCM && wrch != NULL) 979 volch = wrch; 980 } 981 982 devtype = PCMDEV(dev); 983 984 /* Look super harder */ 985 if (volch == NULL && 986 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 987 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 988 ret = dsp_get_volume_channel(dev, &volch); 989 if (ret != 0) 990 return (ret); 991 if (volch == NULL) 992 return (EINVAL); 993 } 994 995 /* Final validation */ 996 if (volch != NULL) { 997 CHN_LOCK(volch); 998 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 999 CHN_UNLOCK(volch); 1000 return (-1); 1001 } 1002 if (volch->direction == PCMDIR_PLAY) 1003 wrch = volch; 1004 else 1005 rdch = volch; 1006 } 1007 1008 ret = EINVAL; 1009 1010 if (volch != NULL && 1011 ((j == SOUND_MIXER_PCM && volch->direction == PCMDIR_PLAY) || 1012 (j == SOUND_MIXER_RECLEV && volch->direction == PCMDIR_REC))) { 1013 if ((cmd & ~0xff) == MIXER_WRITE(0)) { 1014 int left, right, center; 1015 1016 left = *(int *)arg & 0x7f; 1017 right = ((*(int *)arg) >> 8) & 0x7f; 1018 center = (left + right) >> 1; 1019 chn_setvolume_multi(volch, SND_VOL_C_PCM, left, right, 1020 center); 1021 } else if ((cmd & ~0xff) == MIXER_READ(0)) { 1022 *(int *)arg = CHN_GETVOLUME(volch, 1023 SND_VOL_C_PCM, SND_CHN_T_FL); 1024 *(int *)arg |= CHN_GETVOLUME(volch, 1025 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1026 } 1027 ret = 0; 1028 } else if (rdch != NULL || wrch != NULL) { 1029 switch (j) { 1030 case SOUND_MIXER_DEVMASK: 1031 case SOUND_MIXER_CAPS: 1032 case SOUND_MIXER_STEREODEVS: 1033 if ((cmd & ~0xff) == MIXER_READ(0)) { 1034 *(int *)arg = 0; 1035 if (rdch != NULL) 1036 *(int *)arg |= SOUND_MASK_RECLEV; 1037 if (wrch != NULL) 1038 *(int *)arg |= SOUND_MASK_PCM; 1039 } 1040 ret = 0; 1041 break; 1042 case SOUND_MIXER_RECMASK: 1043 case SOUND_MIXER_RECSRC: 1044 if ((cmd & ~0xff) == MIXER_READ(0)) 1045 *(int *)arg = 0; 1046 ret = 0; 1047 break; 1048 default: 1049 break; 1050 } 1051 } 1052 1053 if (volch != NULL) 1054 CHN_UNLOCK(volch); 1055 1056 return (ret); 1057 } 1058 1059 static int 1060 dsp_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1061 struct thread *td) 1062 { 1063 struct pcm_channel *chn, *rdch, *wrch; 1064 struct snddev_info *d; 1065 u_long xcmd; 1066 int *arg_i, ret, tmp; 1067 1068 d = dsp_get_info(i_dev); 1069 if (!DSP_REGISTERED(d, i_dev)) 1070 return (EBADF); 1071 1072 PCM_GIANT_ENTER(d); 1073 1074 arg_i = (int *)arg; 1075 ret = 0; 1076 xcmd = 0; 1077 chn = NULL; 1078 1079 if (IOCGROUP(cmd) == 'M') { 1080 if (cmd == OSS_GETVERSION) { 1081 *arg_i = SOUND_VERSION; 1082 PCM_GIANT_EXIT(d); 1083 return (0); 1084 } 1085 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1086 if (ret != -1) { 1087 PCM_GIANT_EXIT(d); 1088 return (ret); 1089 } 1090 1091 if (d->mixer_dev != NULL) { 1092 PCM_ACQUIRE_QUICK(d); 1093 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1094 MIXER_CMD_DIRECT); 1095 PCM_RELEASE_QUICK(d); 1096 } else 1097 ret = EBADF; 1098 1099 PCM_GIANT_EXIT(d); 1100 1101 return (ret); 1102 } 1103 1104 /* 1105 * Certain ioctls may be made on any type of device (audio, mixer, 1106 * and MIDI). Handle those special cases here. 1107 */ 1108 if (IOCGROUP(cmd) == 'X') { 1109 PCM_ACQUIRE_QUICK(d); 1110 switch(cmd) { 1111 case SNDCTL_SYSINFO: 1112 sound_oss_sysinfo((oss_sysinfo *)arg); 1113 break; 1114 case SNDCTL_CARDINFO: 1115 ret = sound_oss_card_info((oss_card_info *)arg); 1116 break; 1117 case SNDCTL_AUDIOINFO: 1118 case SNDCTL_AUDIOINFO_EX: 1119 case SNDCTL_ENGINEINFO: 1120 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1121 break; 1122 case SNDCTL_MIXERINFO: 1123 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1124 break; 1125 default: 1126 ret = EINVAL; 1127 } 1128 PCM_RELEASE_QUICK(d); 1129 PCM_GIANT_EXIT(d); 1130 return (ret); 1131 } 1132 1133 getchns(i_dev, &rdch, &wrch, 0); 1134 1135 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1136 wrch = NULL; 1137 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1138 rdch = NULL; 1139 1140 if (wrch == NULL && rdch == NULL) { 1141 PCM_GIANT_EXIT(d); 1142 return (EINVAL); 1143 } 1144 1145 switch(cmd) { 1146 #ifdef OLDPCM_IOCTL 1147 /* 1148 * we start with the new ioctl interface. 1149 */ 1150 case AIONWRITE: /* how many bytes can write ? */ 1151 if (wrch) { 1152 CHN_LOCK(wrch); 1153 /* 1154 if (wrch && wrch->bufhard.dl) 1155 while (chn_wrfeed(wrch) == 0); 1156 */ 1157 *arg_i = sndbuf_getfree(wrch->bufsoft); 1158 CHN_UNLOCK(wrch); 1159 } else { 1160 *arg_i = 0; 1161 ret = EINVAL; 1162 } 1163 break; 1164 1165 case AIOSSIZE: /* set the current blocksize */ 1166 { 1167 struct snd_size *p = (struct snd_size *)arg; 1168 1169 p->play_size = 0; 1170 p->rec_size = 0; 1171 PCM_ACQUIRE_QUICK(d); 1172 if (wrch) { 1173 CHN_LOCK(wrch); 1174 chn_setblocksize(wrch, 2, p->play_size); 1175 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1176 CHN_UNLOCK(wrch); 1177 } 1178 if (rdch) { 1179 CHN_LOCK(rdch); 1180 chn_setblocksize(rdch, 2, p->rec_size); 1181 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1182 CHN_UNLOCK(rdch); 1183 } 1184 PCM_RELEASE_QUICK(d); 1185 } 1186 break; 1187 case AIOGSIZE: /* get the current blocksize */ 1188 { 1189 struct snd_size *p = (struct snd_size *)arg; 1190 1191 if (wrch) { 1192 CHN_LOCK(wrch); 1193 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1194 CHN_UNLOCK(wrch); 1195 } 1196 if (rdch) { 1197 CHN_LOCK(rdch); 1198 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1199 CHN_UNLOCK(rdch); 1200 } 1201 } 1202 break; 1203 1204 case AIOSFMT: 1205 case AIOGFMT: 1206 { 1207 snd_chan_param *p = (snd_chan_param *)arg; 1208 1209 if (cmd == AIOSFMT && 1210 ((p->play_format != 0 && p->play_rate == 0) || 1211 (p->rec_format != 0 && p->rec_rate == 0))) { 1212 ret = EINVAL; 1213 break; 1214 } 1215 PCM_ACQUIRE_QUICK(d); 1216 if (wrch) { 1217 CHN_LOCK(wrch); 1218 if (cmd == AIOSFMT && p->play_format != 0) { 1219 chn_setformat(wrch, 1220 SND_FORMAT(p->play_format, 1221 AFMT_CHANNEL(wrch->format), 1222 AFMT_EXTCHANNEL(wrch->format))); 1223 chn_setspeed(wrch, p->play_rate); 1224 } 1225 p->play_rate = wrch->speed; 1226 p->play_format = AFMT_ENCODING(wrch->format); 1227 CHN_UNLOCK(wrch); 1228 } else { 1229 p->play_rate = 0; 1230 p->play_format = 0; 1231 } 1232 if (rdch) { 1233 CHN_LOCK(rdch); 1234 if (cmd == AIOSFMT && p->rec_format != 0) { 1235 chn_setformat(rdch, 1236 SND_FORMAT(p->rec_format, 1237 AFMT_CHANNEL(rdch->format), 1238 AFMT_EXTCHANNEL(rdch->format))); 1239 chn_setspeed(rdch, p->rec_rate); 1240 } 1241 p->rec_rate = rdch->speed; 1242 p->rec_format = AFMT_ENCODING(rdch->format); 1243 CHN_UNLOCK(rdch); 1244 } else { 1245 p->rec_rate = 0; 1246 p->rec_format = 0; 1247 } 1248 PCM_RELEASE_QUICK(d); 1249 } 1250 break; 1251 1252 case AIOGCAP: /* get capabilities */ 1253 { 1254 snd_capabilities *p = (snd_capabilities *)arg; 1255 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1256 struct cdev *pdev; 1257 1258 PCM_LOCK(d); 1259 if (rdch) { 1260 CHN_LOCK(rdch); 1261 rcaps = chn_getcaps(rdch); 1262 } 1263 if (wrch) { 1264 CHN_LOCK(wrch); 1265 pcaps = chn_getcaps(wrch); 1266 } 1267 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1268 pcaps? pcaps->minspeed : 0); 1269 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1270 pcaps? pcaps->maxspeed : 1000000); 1271 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1272 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1273 /* XXX bad on sb16 */ 1274 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1275 (wrch? chn_getformats(wrch) : 0xffffffff); 1276 if (rdch && wrch) 1277 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1278 pdev = d->mixer_dev; 1279 p->mixers = 1; /* default: one mixer */ 1280 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1281 p->left = p->right = 100; 1282 if (wrch) 1283 CHN_UNLOCK(wrch); 1284 if (rdch) 1285 CHN_UNLOCK(rdch); 1286 PCM_UNLOCK(d); 1287 } 1288 break; 1289 1290 case AIOSTOP: 1291 if (*arg_i == AIOSYNC_PLAY && wrch) { 1292 CHN_LOCK(wrch); 1293 *arg_i = chn_abort(wrch); 1294 CHN_UNLOCK(wrch); 1295 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1296 CHN_LOCK(rdch); 1297 *arg_i = chn_abort(rdch); 1298 CHN_UNLOCK(rdch); 1299 } else { 1300 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1301 *arg_i = 0; 1302 } 1303 break; 1304 1305 case AIOSYNC: 1306 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1307 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1308 break; 1309 #endif 1310 /* 1311 * here follow the standard ioctls (filio.h etc.) 1312 */ 1313 case FIONREAD: /* get # bytes to read */ 1314 if (rdch) { 1315 CHN_LOCK(rdch); 1316 /* if (rdch && rdch->bufhard.dl) 1317 while (chn_rdfeed(rdch) == 0); 1318 */ 1319 *arg_i = sndbuf_getready(rdch->bufsoft); 1320 CHN_UNLOCK(rdch); 1321 } else { 1322 *arg_i = 0; 1323 ret = EINVAL; 1324 } 1325 break; 1326 1327 case FIOASYNC: /*set/clear async i/o */ 1328 DEB( printf("FIOASYNC\n") ; ) 1329 break; 1330 1331 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1332 case FIONBIO: /* set/clear non-blocking i/o */ 1333 if (rdch) { 1334 CHN_LOCK(rdch); 1335 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1336 rdch->flags |= CHN_F_NBIO; 1337 else 1338 rdch->flags &= ~CHN_F_NBIO; 1339 CHN_UNLOCK(rdch); 1340 } 1341 if (wrch) { 1342 CHN_LOCK(wrch); 1343 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1344 wrch->flags |= CHN_F_NBIO; 1345 else 1346 wrch->flags &= ~CHN_F_NBIO; 1347 CHN_UNLOCK(wrch); 1348 } 1349 break; 1350 1351 /* 1352 * Finally, here is the linux-compatible ioctl interface 1353 */ 1354 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1355 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1356 case SNDCTL_DSP_GETBLKSIZE: 1357 chn = wrch ? wrch : rdch; 1358 if (chn) { 1359 CHN_LOCK(chn); 1360 *arg_i = sndbuf_getblksz(chn->bufsoft); 1361 CHN_UNLOCK(chn); 1362 } else { 1363 *arg_i = 0; 1364 ret = EINVAL; 1365 } 1366 break; 1367 1368 case SNDCTL_DSP_SETBLKSIZE: 1369 RANGE(*arg_i, 16, 65536); 1370 PCM_ACQUIRE_QUICK(d); 1371 if (wrch) { 1372 CHN_LOCK(wrch); 1373 chn_setblocksize(wrch, 2, *arg_i); 1374 CHN_UNLOCK(wrch); 1375 } 1376 if (rdch) { 1377 CHN_LOCK(rdch); 1378 chn_setblocksize(rdch, 2, *arg_i); 1379 CHN_UNLOCK(rdch); 1380 } 1381 PCM_RELEASE_QUICK(d); 1382 break; 1383 1384 case SNDCTL_DSP_RESET: 1385 DEB(printf("dsp reset\n")); 1386 if (wrch) { 1387 CHN_LOCK(wrch); 1388 chn_abort(wrch); 1389 chn_resetbuf(wrch); 1390 CHN_UNLOCK(wrch); 1391 } 1392 if (rdch) { 1393 CHN_LOCK(rdch); 1394 chn_abort(rdch); 1395 chn_resetbuf(rdch); 1396 CHN_UNLOCK(rdch); 1397 } 1398 break; 1399 1400 case SNDCTL_DSP_SYNC: 1401 DEB(printf("dsp sync\n")); 1402 /* chn_sync may sleep */ 1403 if (wrch) { 1404 CHN_LOCK(wrch); 1405 chn_sync(wrch, 0); 1406 CHN_UNLOCK(wrch); 1407 } 1408 break; 1409 1410 case SNDCTL_DSP_SPEED: 1411 /* chn_setspeed may sleep */ 1412 tmp = 0; 1413 PCM_ACQUIRE_QUICK(d); 1414 if (wrch) { 1415 CHN_LOCK(wrch); 1416 ret = chn_setspeed(wrch, *arg_i); 1417 tmp = wrch->speed; 1418 CHN_UNLOCK(wrch); 1419 } 1420 if (rdch && ret == 0) { 1421 CHN_LOCK(rdch); 1422 ret = chn_setspeed(rdch, *arg_i); 1423 if (tmp == 0) 1424 tmp = rdch->speed; 1425 CHN_UNLOCK(rdch); 1426 } 1427 PCM_RELEASE_QUICK(d); 1428 *arg_i = tmp; 1429 break; 1430 1431 case SOUND_PCM_READ_RATE: 1432 chn = wrch ? wrch : rdch; 1433 if (chn) { 1434 CHN_LOCK(chn); 1435 *arg_i = chn->speed; 1436 CHN_UNLOCK(chn); 1437 } else { 1438 *arg_i = 0; 1439 ret = EINVAL; 1440 } 1441 break; 1442 1443 case SNDCTL_DSP_STEREO: 1444 tmp = -1; 1445 *arg_i = (*arg_i)? 2 : 1; 1446 PCM_ACQUIRE_QUICK(d); 1447 if (wrch) { 1448 CHN_LOCK(wrch); 1449 ret = chn_setformat(wrch, 1450 SND_FORMAT(wrch->format, *arg_i, 0)); 1451 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1452 CHN_UNLOCK(wrch); 1453 } 1454 if (rdch && ret == 0) { 1455 CHN_LOCK(rdch); 1456 ret = chn_setformat(rdch, 1457 SND_FORMAT(rdch->format, *arg_i, 0)); 1458 if (tmp == -1) 1459 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1460 CHN_UNLOCK(rdch); 1461 } 1462 PCM_RELEASE_QUICK(d); 1463 *arg_i = tmp; 1464 break; 1465 1466 case SOUND_PCM_WRITE_CHANNELS: 1467 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1468 if (*arg_i < 0) { 1469 *arg_i = 0; 1470 ret = EINVAL; 1471 break; 1472 } 1473 if (*arg_i != 0) { 1474 struct pcmchan_matrix *m; 1475 uint32_t ext; 1476 1477 tmp = 0; 1478 if (*arg_i > SND_CHN_MAX) 1479 *arg_i = SND_CHN_MAX; 1480 1481 m = feeder_matrix_default_channel_map(*arg_i); 1482 if (m != NULL) 1483 ext = m->ext; 1484 else 1485 ext = 0; 1486 1487 PCM_ACQUIRE_QUICK(d); 1488 if (wrch) { 1489 CHN_LOCK(wrch); 1490 ret = chn_setformat(wrch, 1491 SND_FORMAT(wrch->format, *arg_i, ext)); 1492 tmp = AFMT_CHANNEL(wrch->format); 1493 CHN_UNLOCK(wrch); 1494 } 1495 if (rdch && ret == 0) { 1496 CHN_LOCK(rdch); 1497 ret = chn_setformat(rdch, 1498 SND_FORMAT(rdch->format, *arg_i, ext)); 1499 if (tmp == 0) 1500 tmp = AFMT_CHANNEL(rdch->format); 1501 CHN_UNLOCK(rdch); 1502 } 1503 PCM_RELEASE_QUICK(d); 1504 *arg_i = tmp; 1505 } else { 1506 chn = wrch ? wrch : rdch; 1507 CHN_LOCK(chn); 1508 *arg_i = AFMT_CHANNEL(chn->format); 1509 CHN_UNLOCK(chn); 1510 } 1511 break; 1512 1513 case SOUND_PCM_READ_CHANNELS: 1514 chn = wrch ? wrch : rdch; 1515 if (chn) { 1516 CHN_LOCK(chn); 1517 *arg_i = AFMT_CHANNEL(chn->format); 1518 CHN_UNLOCK(chn); 1519 } else { 1520 *arg_i = 0; 1521 ret = EINVAL; 1522 } 1523 break; 1524 1525 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1526 chn = wrch ? wrch : rdch; 1527 if (chn) { 1528 CHN_LOCK(chn); 1529 *arg_i = chn_getformats(chn); 1530 CHN_UNLOCK(chn); 1531 } else { 1532 *arg_i = 0; 1533 ret = EINVAL; 1534 } 1535 break; 1536 1537 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1538 if (*arg_i != AFMT_QUERY) { 1539 tmp = 0; 1540 PCM_ACQUIRE_QUICK(d); 1541 if (wrch) { 1542 CHN_LOCK(wrch); 1543 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1544 AFMT_CHANNEL(wrch->format), 1545 AFMT_EXTCHANNEL(wrch->format))); 1546 tmp = wrch->format; 1547 CHN_UNLOCK(wrch); 1548 } 1549 if (rdch && ret == 0) { 1550 CHN_LOCK(rdch); 1551 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1552 AFMT_CHANNEL(rdch->format), 1553 AFMT_EXTCHANNEL(rdch->format))); 1554 if (tmp == 0) 1555 tmp = rdch->format; 1556 CHN_UNLOCK(rdch); 1557 } 1558 PCM_RELEASE_QUICK(d); 1559 *arg_i = AFMT_ENCODING(tmp); 1560 } else { 1561 chn = wrch ? wrch : rdch; 1562 CHN_LOCK(chn); 1563 *arg_i = AFMT_ENCODING(chn->format); 1564 CHN_UNLOCK(chn); 1565 } 1566 break; 1567 1568 case SNDCTL_DSP_SETFRAGMENT: 1569 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1570 { 1571 uint32_t fragln = (*arg_i) & 0x0000ffff; 1572 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1573 uint32_t fragsz; 1574 uint32_t r_maxfrags, r_fragsz; 1575 1576 RANGE(fragln, 4, 16); 1577 fragsz = 1 << fragln; 1578 1579 if (maxfrags == 0) 1580 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1581 if (maxfrags < 2) 1582 maxfrags = 2; 1583 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1584 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1585 1586 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1587 PCM_ACQUIRE_QUICK(d); 1588 if (rdch) { 1589 CHN_LOCK(rdch); 1590 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1591 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1592 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1593 CHN_UNLOCK(rdch); 1594 } else { 1595 r_maxfrags = maxfrags; 1596 r_fragsz = fragsz; 1597 } 1598 if (wrch && ret == 0) { 1599 CHN_LOCK(wrch); 1600 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1601 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1602 fragsz = sndbuf_getblksz(wrch->bufsoft); 1603 CHN_UNLOCK(wrch); 1604 } else { /* use whatever came from the read channel */ 1605 maxfrags = r_maxfrags; 1606 fragsz = r_fragsz; 1607 } 1608 PCM_RELEASE_QUICK(d); 1609 1610 fragln = 0; 1611 while (fragsz > 1) { 1612 fragln++; 1613 fragsz >>= 1; 1614 } 1615 *arg_i = (maxfrags << 16) | fragln; 1616 } 1617 break; 1618 1619 case SNDCTL_DSP_GETISPACE: 1620 /* return the size of data available in the input queue */ 1621 { 1622 audio_buf_info *a = (audio_buf_info *)arg; 1623 if (rdch) { 1624 struct snd_dbuf *bs = rdch->bufsoft; 1625 1626 CHN_LOCK(rdch); 1627 a->bytes = sndbuf_getready(bs); 1628 a->fragments = a->bytes / sndbuf_getblksz(bs); 1629 a->fragstotal = sndbuf_getblkcnt(bs); 1630 a->fragsize = sndbuf_getblksz(bs); 1631 CHN_UNLOCK(rdch); 1632 } else 1633 ret = EINVAL; 1634 } 1635 break; 1636 1637 case SNDCTL_DSP_GETOSPACE: 1638 /* return space available in the output queue */ 1639 { 1640 audio_buf_info *a = (audio_buf_info *)arg; 1641 if (wrch) { 1642 struct snd_dbuf *bs = wrch->bufsoft; 1643 1644 CHN_LOCK(wrch); 1645 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1646 a->bytes = sndbuf_getfree(bs); 1647 a->fragments = a->bytes / sndbuf_getblksz(bs); 1648 a->fragstotal = sndbuf_getblkcnt(bs); 1649 a->fragsize = sndbuf_getblksz(bs); 1650 CHN_UNLOCK(wrch); 1651 } else 1652 ret = EINVAL; 1653 } 1654 break; 1655 1656 case SNDCTL_DSP_GETIPTR: 1657 { 1658 count_info *a = (count_info *)arg; 1659 if (rdch) { 1660 struct snd_dbuf *bs = rdch->bufsoft; 1661 1662 CHN_LOCK(rdch); 1663 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1664 a->bytes = sndbuf_gettotal(bs); 1665 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1666 a->ptr = sndbuf_getfreeptr(bs); 1667 rdch->blocks = sndbuf_getblocks(bs); 1668 CHN_UNLOCK(rdch); 1669 } else 1670 ret = EINVAL; 1671 } 1672 break; 1673 1674 case SNDCTL_DSP_GETOPTR: 1675 { 1676 count_info *a = (count_info *)arg; 1677 if (wrch) { 1678 struct snd_dbuf *bs = wrch->bufsoft; 1679 1680 CHN_LOCK(wrch); 1681 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1682 a->bytes = sndbuf_gettotal(bs); 1683 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1684 a->ptr = sndbuf_getreadyptr(bs); 1685 wrch->blocks = sndbuf_getblocks(bs); 1686 CHN_UNLOCK(wrch); 1687 } else 1688 ret = EINVAL; 1689 } 1690 break; 1691 1692 case SNDCTL_DSP_GETCAPS: 1693 PCM_LOCK(d); 1694 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1695 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1696 *arg_i |= PCM_CAP_DUPLEX; 1697 PCM_UNLOCK(d); 1698 break; 1699 1700 case SOUND_PCM_READ_BITS: 1701 chn = wrch ? wrch : rdch; 1702 if (chn) { 1703 CHN_LOCK(chn); 1704 if (chn->format & AFMT_8BIT) 1705 *arg_i = 8; 1706 else if (chn->format & AFMT_16BIT) 1707 *arg_i = 16; 1708 else if (chn->format & AFMT_24BIT) 1709 *arg_i = 24; 1710 else if (chn->format & AFMT_32BIT) 1711 *arg_i = 32; 1712 else 1713 ret = EINVAL; 1714 CHN_UNLOCK(chn); 1715 } else { 1716 *arg_i = 0; 1717 ret = EINVAL; 1718 } 1719 break; 1720 1721 case SNDCTL_DSP_SETTRIGGER: 1722 if (rdch) { 1723 CHN_LOCK(rdch); 1724 rdch->flags &= ~CHN_F_NOTRIGGER; 1725 if (*arg_i & PCM_ENABLE_INPUT) 1726 chn_start(rdch, 1); 1727 else { 1728 chn_abort(rdch); 1729 chn_resetbuf(rdch); 1730 rdch->flags |= CHN_F_NOTRIGGER; 1731 } 1732 CHN_UNLOCK(rdch); 1733 } 1734 if (wrch) { 1735 CHN_LOCK(wrch); 1736 wrch->flags &= ~CHN_F_NOTRIGGER; 1737 if (*arg_i & PCM_ENABLE_OUTPUT) 1738 chn_start(wrch, 1); 1739 else { 1740 chn_abort(wrch); 1741 chn_resetbuf(wrch); 1742 wrch->flags |= CHN_F_NOTRIGGER; 1743 } 1744 CHN_UNLOCK(wrch); 1745 } 1746 break; 1747 1748 case SNDCTL_DSP_GETTRIGGER: 1749 *arg_i = 0; 1750 if (wrch) { 1751 CHN_LOCK(wrch); 1752 if (wrch->flags & CHN_F_TRIGGERED) 1753 *arg_i |= PCM_ENABLE_OUTPUT; 1754 CHN_UNLOCK(wrch); 1755 } 1756 if (rdch) { 1757 CHN_LOCK(rdch); 1758 if (rdch->flags & CHN_F_TRIGGERED) 1759 *arg_i |= PCM_ENABLE_INPUT; 1760 CHN_UNLOCK(rdch); 1761 } 1762 break; 1763 1764 case SNDCTL_DSP_GETODELAY: 1765 if (wrch) { 1766 struct snd_dbuf *bs = wrch->bufsoft; 1767 1768 CHN_LOCK(wrch); 1769 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1770 *arg_i = sndbuf_getready(bs); 1771 CHN_UNLOCK(wrch); 1772 } else 1773 ret = EINVAL; 1774 break; 1775 1776 case SNDCTL_DSP_POST: 1777 if (wrch) { 1778 CHN_LOCK(wrch); 1779 wrch->flags &= ~CHN_F_NOTRIGGER; 1780 chn_start(wrch, 1); 1781 CHN_UNLOCK(wrch); 1782 } 1783 break; 1784 1785 case SNDCTL_DSP_SETDUPLEX: 1786 /* 1787 * switch to full-duplex mode if card is in half-duplex 1788 * mode and is able to work in full-duplex mode 1789 */ 1790 PCM_LOCK(d); 1791 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1792 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1793 PCM_UNLOCK(d); 1794 break; 1795 1796 /* 1797 * The following four ioctls are simple wrappers around mixer_ioctl 1798 * with no further processing. xcmd is short for "translated 1799 * command". 1800 */ 1801 case SNDCTL_DSP_GETRECVOL: 1802 if (xcmd == 0) { 1803 xcmd = SOUND_MIXER_READ_RECLEV; 1804 chn = rdch; 1805 } 1806 /* FALLTHROUGH */ 1807 case SNDCTL_DSP_SETRECVOL: 1808 if (xcmd == 0) { 1809 xcmd = SOUND_MIXER_WRITE_RECLEV; 1810 chn = rdch; 1811 } 1812 /* FALLTHROUGH */ 1813 case SNDCTL_DSP_GETPLAYVOL: 1814 if (xcmd == 0) { 1815 xcmd = SOUND_MIXER_READ_PCM; 1816 chn = wrch; 1817 } 1818 /* FALLTHROUGH */ 1819 case SNDCTL_DSP_SETPLAYVOL: 1820 if (xcmd == 0) { 1821 xcmd = SOUND_MIXER_WRITE_PCM; 1822 chn = wrch; 1823 } 1824 1825 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1826 if (ret != -1) { 1827 PCM_GIANT_EXIT(d); 1828 return (ret); 1829 } 1830 1831 if (d->mixer_dev != NULL) { 1832 PCM_ACQUIRE_QUICK(d); 1833 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1834 MIXER_CMD_DIRECT); 1835 PCM_RELEASE_QUICK(d); 1836 } else 1837 ret = ENOTSUP; 1838 1839 break; 1840 1841 case SNDCTL_DSP_GET_RECSRC_NAMES: 1842 case SNDCTL_DSP_GET_RECSRC: 1843 case SNDCTL_DSP_SET_RECSRC: 1844 if (d->mixer_dev != NULL) { 1845 PCM_ACQUIRE_QUICK(d); 1846 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1847 MIXER_CMD_DIRECT); 1848 PCM_RELEASE_QUICK(d); 1849 } else 1850 ret = ENOTSUP; 1851 break; 1852 1853 /* 1854 * The following 3 ioctls aren't very useful at the moment. For 1855 * now, only a single channel is associated with a cdev (/dev/dspN 1856 * instance), so there's only a single output routing to use (i.e., 1857 * the wrch bound to this cdev). 1858 */ 1859 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1860 { 1861 oss_mixer_enuminfo *ei; 1862 ei = (oss_mixer_enuminfo *)arg; 1863 ei->dev = 0; 1864 ei->ctrl = 0; 1865 ei->version = 0; /* static for now */ 1866 ei->strindex[0] = 0; 1867 1868 if (wrch != NULL) { 1869 ei->nvalues = 1; 1870 strlcpy(ei->strings, wrch->name, 1871 sizeof(ei->strings)); 1872 } else { 1873 ei->nvalues = 0; 1874 ei->strings[0] = '\0'; 1875 } 1876 } 1877 break; 1878 case SNDCTL_DSP_GET_PLAYTGT: 1879 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1880 /* 1881 * Re: SET_PLAYTGT 1882 * OSSv4: "The value that was accepted by the device will 1883 * be returned back in the variable pointed by the 1884 * argument." 1885 */ 1886 if (wrch != NULL) 1887 *arg_i = 0; 1888 else 1889 ret = EINVAL; 1890 break; 1891 1892 case SNDCTL_DSP_SILENCE: 1893 /* 1894 * Flush the software (pre-feed) buffer, but try to minimize playback 1895 * interruption. (I.e., record unplayed samples with intent to 1896 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1897 * functionality. 1898 */ 1899 if (wrch == NULL) 1900 ret = EINVAL; 1901 else { 1902 struct snd_dbuf *bs; 1903 CHN_LOCK(wrch); 1904 while (wrch->inprog != 0) 1905 cv_wait(&wrch->cv, wrch->lock); 1906 bs = wrch->bufsoft; 1907 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1908 bs->sl = sndbuf_getready(bs); 1909 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1910 sndbuf_fillsilence(bs); 1911 chn_start(wrch, 0); 1912 } 1913 CHN_UNLOCK(wrch); 1914 } 1915 break; 1916 1917 case SNDCTL_DSP_SKIP: 1918 /* 1919 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1920 * playback buffer by moving the current write position immediately 1921 * before the point where the device is currently reading the samples." 1922 */ 1923 if (wrch == NULL) 1924 ret = EINVAL; 1925 else { 1926 struct snd_dbuf *bs; 1927 CHN_LOCK(wrch); 1928 while (wrch->inprog != 0) 1929 cv_wait(&wrch->cv, wrch->lock); 1930 bs = wrch->bufsoft; 1931 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1932 sndbuf_softreset(bs); 1933 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1934 bs->sl = 0; 1935 chn_start(wrch, 0); 1936 } 1937 CHN_UNLOCK(wrch); 1938 } 1939 break; 1940 1941 case SNDCTL_DSP_CURRENT_OPTR: 1942 case SNDCTL_DSP_CURRENT_IPTR: 1943 /** 1944 * @note Changing formats resets the buffer counters, which differs 1945 * from the 4Front drivers. However, I don't expect this to be 1946 * much of a problem. 1947 * 1948 * @note In a test where @c CURRENT_OPTR is called immediately after write 1949 * returns, this driver is about 32K samples behind whereas 1950 * 4Front's is about 8K samples behind. Should determine source 1951 * of discrepancy, even if only out of curiosity. 1952 * 1953 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1954 */ 1955 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1956 if (chn == NULL) 1957 ret = EINVAL; 1958 else { 1959 struct snd_dbuf *bs; 1960 /* int tmp; */ 1961 1962 oss_count_t *oc = (oss_count_t *)arg; 1963 1964 CHN_LOCK(chn); 1965 bs = chn->bufsoft; 1966 #if 0 1967 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1968 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1969 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1970 #else 1971 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1972 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1973 #endif 1974 CHN_UNLOCK(chn); 1975 } 1976 break; 1977 1978 case SNDCTL_DSP_HALT_OUTPUT: 1979 case SNDCTL_DSP_HALT_INPUT: 1980 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1981 if (chn == NULL) 1982 ret = EINVAL; 1983 else { 1984 CHN_LOCK(chn); 1985 chn_abort(chn); 1986 CHN_UNLOCK(chn); 1987 } 1988 break; 1989 1990 case SNDCTL_DSP_LOW_WATER: 1991 /* 1992 * Set the number of bytes required to attract attention by 1993 * select/poll. 1994 */ 1995 if (wrch != NULL) { 1996 CHN_LOCK(wrch); 1997 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 1998 CHN_UNLOCK(wrch); 1999 } 2000 if (rdch != NULL) { 2001 CHN_LOCK(rdch); 2002 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2003 CHN_UNLOCK(rdch); 2004 } 2005 break; 2006 2007 case SNDCTL_DSP_GETERROR: 2008 /* 2009 * OSSv4 docs: "All errors and counters will automatically be 2010 * cleared to zeroes after the call so each call will return only 2011 * the errors that occurred after the previous invocation. ... The 2012 * play_underruns and rec_overrun fields are the only usefull fields 2013 * returned by OSS 4.0." 2014 */ 2015 { 2016 audio_errinfo *ei = (audio_errinfo *)arg; 2017 2018 bzero((void *)ei, sizeof(*ei)); 2019 2020 if (wrch != NULL) { 2021 CHN_LOCK(wrch); 2022 ei->play_underruns = wrch->xruns; 2023 wrch->xruns = 0; 2024 CHN_UNLOCK(wrch); 2025 } 2026 if (rdch != NULL) { 2027 CHN_LOCK(rdch); 2028 ei->rec_overruns = rdch->xruns; 2029 rdch->xruns = 0; 2030 CHN_UNLOCK(rdch); 2031 } 2032 } 2033 break; 2034 2035 case SNDCTL_DSP_SYNCGROUP: 2036 PCM_ACQUIRE_QUICK(d); 2037 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2038 PCM_RELEASE_QUICK(d); 2039 break; 2040 2041 case SNDCTL_DSP_SYNCSTART: 2042 PCM_ACQUIRE_QUICK(d); 2043 ret = dsp_oss_syncstart(*arg_i); 2044 PCM_RELEASE_QUICK(d); 2045 break; 2046 2047 case SNDCTL_DSP_POLICY: 2048 PCM_ACQUIRE_QUICK(d); 2049 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2050 PCM_RELEASE_QUICK(d); 2051 break; 2052 2053 case SNDCTL_DSP_COOKEDMODE: 2054 PCM_ACQUIRE_QUICK(d); 2055 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2056 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2057 PCM_RELEASE_QUICK(d); 2058 break; 2059 case SNDCTL_DSP_GET_CHNORDER: 2060 PCM_ACQUIRE_QUICK(d); 2061 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2062 PCM_RELEASE_QUICK(d); 2063 break; 2064 case SNDCTL_DSP_SET_CHNORDER: 2065 PCM_ACQUIRE_QUICK(d); 2066 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2067 PCM_RELEASE_QUICK(d); 2068 break; 2069 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2070 PCM_ACQUIRE_QUICK(d); 2071 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2072 PCM_RELEASE_QUICK(d); 2073 break; 2074 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2075 ret = EINVAL; 2076 break; 2077 #ifdef OSSV4_EXPERIMENT 2078 /* 2079 * XXX The following ioctls are not yet supported and just return 2080 * EINVAL. 2081 */ 2082 case SNDCTL_DSP_GETOPEAKS: 2083 case SNDCTL_DSP_GETIPEAKS: 2084 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2085 if (chn == NULL) 2086 ret = EINVAL; 2087 else { 2088 oss_peaks_t *op = (oss_peaks_t *)arg; 2089 int lpeak, rpeak; 2090 2091 CHN_LOCK(chn); 2092 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2093 if (ret == -1) 2094 ret = EINVAL; 2095 else { 2096 (*op)[0] = lpeak; 2097 (*op)[1] = rpeak; 2098 } 2099 CHN_UNLOCK(chn); 2100 } 2101 break; 2102 2103 /* 2104 * XXX Once implemented, revisit this for proper cv protection 2105 * (if necessary). 2106 */ 2107 case SNDCTL_GETLABEL: 2108 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2109 break; 2110 case SNDCTL_SETLABEL: 2111 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2112 break; 2113 case SNDCTL_GETSONG: 2114 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2115 break; 2116 case SNDCTL_SETSONG: 2117 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2118 break; 2119 case SNDCTL_SETNAME: 2120 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2121 break; 2122 #if 0 2123 /** 2124 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2125 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2126 * 4Front Technologies. 2127 */ 2128 case SNDCTL_DSP_READCTL: 2129 case SNDCTL_DSP_WRITECTL: 2130 ret = EINVAL; 2131 break; 2132 #endif /* !0 (explicitly omitted ioctls) */ 2133 2134 #endif /* !OSSV4_EXPERIMENT */ 2135 case SNDCTL_DSP_MAPINBUF: 2136 case SNDCTL_DSP_MAPOUTBUF: 2137 case SNDCTL_DSP_SETSYNCRO: 2138 /* undocumented */ 2139 2140 case SNDCTL_DSP_SUBDIVIDE: 2141 case SOUND_PCM_WRITE_FILTER: 2142 case SOUND_PCM_READ_FILTER: 2143 /* dunno what these do, don't sound important */ 2144 2145 default: 2146 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2147 ret = EINVAL; 2148 break; 2149 } 2150 2151 PCM_GIANT_LEAVE(d); 2152 2153 return (ret); 2154 } 2155 2156 static int 2157 dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2158 { 2159 struct snddev_info *d; 2160 struct pcm_channel *wrch, *rdch; 2161 int ret, e; 2162 2163 d = dsp_get_info(i_dev); 2164 if (!DSP_REGISTERED(d, i_dev)) 2165 return (EBADF); 2166 2167 PCM_GIANT_ENTER(d); 2168 2169 wrch = NULL; 2170 rdch = NULL; 2171 ret = 0; 2172 2173 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2174 2175 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2176 e = (events & (POLLOUT | POLLWRNORM)); 2177 if (e) 2178 ret |= chn_poll(wrch, e, td); 2179 } 2180 2181 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2182 e = (events & (POLLIN | POLLRDNORM)); 2183 if (e) 2184 ret |= chn_poll(rdch, e, td); 2185 } 2186 2187 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2188 2189 PCM_GIANT_LEAVE(d); 2190 2191 return (ret); 2192 } 2193 2194 static int 2195 dsp_mmap(struct cdev *i_dev, vm_ooffset_t offset, vm_paddr_t *paddr, 2196 int nprot, vm_memattr_t *memattr) 2197 { 2198 2199 /* XXX memattr is not honored */ 2200 *paddr = vtophys(offset); 2201 return (0); 2202 } 2203 2204 static int 2205 dsp_mmap_single(struct cdev *i_dev, vm_ooffset_t *offset, 2206 vm_size_t size, struct vm_object **object, int nprot) 2207 { 2208 struct snddev_info *d; 2209 struct pcm_channel *wrch, *rdch, *c; 2210 2211 /* 2212 * Reject PROT_EXEC by default. It just doesn't makes sense. 2213 * Unfortunately, we have to give up this one due to linux_mmap 2214 * changes. 2215 * 2216 * http://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2217 * 2218 */ 2219 #ifdef SV_ABI_LINUX 2220 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2221 (dsp_mmap_allow_prot_exec == 0 && 2222 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2223 #else 2224 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2225 #endif 2226 return (EINVAL); 2227 2228 /* 2229 * PROT_READ (alone) selects the input buffer. 2230 * PROT_WRITE (alone) selects the output buffer. 2231 * PROT_WRITE|PROT_READ together select the output buffer. 2232 */ 2233 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2234 return (EINVAL); 2235 2236 d = dsp_get_info(i_dev); 2237 if (!DSP_REGISTERED(d, i_dev)) 2238 return (EINVAL); 2239 2240 PCM_GIANT_ENTER(d); 2241 2242 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2243 2244 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2245 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2246 (*offset + size) > sndbuf_getsize(c->bufsoft) || 2247 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2248 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2249 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2250 PCM_GIANT_EXIT(d); 2251 return (EINVAL); 2252 } 2253 2254 if (wrch != NULL) 2255 wrch->flags |= CHN_F_MMAP; 2256 if (rdch != NULL) 2257 rdch->flags |= CHN_F_MMAP; 2258 2259 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2260 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2261 *object = vm_pager_allocate(OBJT_DEVICE, i_dev, 2262 size, nprot, *offset, curthread->td_ucred); 2263 2264 PCM_GIANT_LEAVE(d); 2265 2266 if (*object == NULL) 2267 return (EINVAL); 2268 return (0); 2269 } 2270 2271 /* So much for dev_stdclone() */ 2272 static int 2273 dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2274 { 2275 size_t len; 2276 2277 len = strlen(namep); 2278 2279 if (bcmp(name, namep, len) != 0) 2280 return (ENODEV); 2281 2282 name += len; 2283 2284 if (isdigit(*name) == 0) 2285 return (ENODEV); 2286 2287 len = strlen(sep); 2288 2289 if (*name == '0' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2290 return (ENODEV); 2291 2292 for (*u = 0; isdigit(*name) != 0; name++) { 2293 *u *= 10; 2294 *u += *name - '0'; 2295 if (*u > dsp_umax) 2296 return (ENODEV); 2297 } 2298 2299 if (*name == '\0') 2300 return ((use_sep == 0) ? 0 : ENODEV); 2301 2302 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2303 return (ENODEV); 2304 2305 name += len; 2306 2307 if (*name == '0' && name[1] != '\0') 2308 return (ENODEV); 2309 2310 for (*c = 0; isdigit(*name) != 0; name++) { 2311 *c *= 10; 2312 *c += *name - '0'; 2313 if (*c > dsp_cmax) 2314 return (ENODEV); 2315 } 2316 2317 if (*name != '\0') 2318 return (ENODEV); 2319 2320 return (0); 2321 } 2322 2323 static void 2324 dsp_clone(void *arg, 2325 #if __FreeBSD_version >= 600034 2326 struct ucred *cred, 2327 #endif 2328 char *name, int namelen, struct cdev **dev) 2329 { 2330 struct snddev_info *d; 2331 struct snd_clone_entry *ce; 2332 struct pcm_channel *c; 2333 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2334 char *devname, *devcmp, *devsep; 2335 2336 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2337 2338 if (*dev != NULL) 2339 return; 2340 2341 unit = -1; 2342 cunit = -1; 2343 devtype = -1; 2344 devhw = 0; 2345 devcmax = -1; 2346 tumax = -1; 2347 devname = NULL; 2348 devsep = NULL; 2349 2350 for (i = 0; unit == -1 && 2351 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2352 devtype = dsp_cdevs[i].type; 2353 devcmp = dsp_cdevs[i].name; 2354 devsep = dsp_cdevs[i].sep; 2355 devname = dsp_cdevs[i].alias; 2356 if (devname == NULL) 2357 devname = devcmp; 2358 devhw = dsp_cdevs[i].hw; 2359 devcmax = dsp_cdevs[i].max - 1; 2360 if (strcmp(name, devcmp) == 0) 2361 unit = snd_unit; 2362 else if (dsp_stdclone(name, devcmp, devsep, 2363 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2364 unit = -1; 2365 cunit = -1; 2366 } 2367 } 2368 2369 d = devclass_get_softc(pcm_devclass, unit); 2370 if (!PCM_REGISTERED(d) || d->clones == NULL) 2371 return; 2372 2373 /* XXX Need Giant magic entry ??? */ 2374 2375 PCM_LOCK(d); 2376 if (snd_clone_disabled(d->clones)) { 2377 PCM_UNLOCK(d); 2378 return; 2379 } 2380 2381 PCM_WAIT(d); 2382 PCM_ACQUIRE(d); 2383 PCM_UNLOCK(d); 2384 2385 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2386 2387 if (devhw != 0) { 2388 KASSERT(devcmax <= dsp_cmax, 2389 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2390 if (cunit > devcmax) { 2391 PCM_RELEASE_QUICK(d); 2392 return; 2393 } 2394 udcmask |= snd_c2unit(cunit); 2395 CHN_FOREACH(c, d, channels.pcm) { 2396 CHN_LOCK(c); 2397 if (c->unit != udcmask) { 2398 CHN_UNLOCK(c); 2399 continue; 2400 } 2401 CHN_UNLOCK(c); 2402 udcmask &= ~snd_c2unit(cunit); 2403 /* 2404 * Temporarily increase clone maxunit to overcome 2405 * vchan flexibility. 2406 * 2407 * # sysctl dev.pcm.0.play.vchans=256 2408 * dev.pcm.0.play.vchans: 1 -> 256 2409 * # cat /dev/zero > /dev/dsp0.vp255 & 2410 * [1] 17296 2411 * # sysctl dev.pcm.0.play.vchans=0 2412 * dev.pcm.0.play.vchans: 256 -> 1 2413 * # fg 2414 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2415 * ^C 2416 * # cat /dev/zero > /dev/dsp0.vp255 2417 * zsh: operation not supported: /dev/dsp0.vp255 2418 */ 2419 tumax = snd_clone_getmaxunit(d->clones); 2420 if (cunit > tumax) 2421 snd_clone_setmaxunit(d->clones, cunit); 2422 else 2423 tumax = -1; 2424 goto dsp_clone_alloc; 2425 } 2426 /* 2427 * Ok, so we're requesting unallocated vchan, but still 2428 * within maximum vchan limit. 2429 */ 2430 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2431 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2432 cunit < snd_maxautovchans) { 2433 udcmask &= ~snd_c2unit(cunit); 2434 tumax = snd_clone_getmaxunit(d->clones); 2435 if (cunit > tumax) 2436 snd_clone_setmaxunit(d->clones, cunit); 2437 else 2438 tumax = -1; 2439 goto dsp_clone_alloc; 2440 } 2441 PCM_RELEASE_QUICK(d); 2442 return; 2443 } 2444 2445 dsp_clone_alloc: 2446 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2447 if (tumax != -1) 2448 snd_clone_setmaxunit(d->clones, tumax); 2449 if (ce != NULL) { 2450 udcmask |= snd_c2unit(cunit); 2451 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2452 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2453 devname, unit, devsep, cunit); 2454 snd_clone_register(ce, *dev); 2455 } 2456 2457 PCM_RELEASE_QUICK(d); 2458 2459 if (*dev != NULL) 2460 dev_ref(*dev); 2461 } 2462 2463 static void 2464 dsp_sysinit(void *p) 2465 { 2466 if (dsp_ehtag != NULL) 2467 return; 2468 /* initialize unit numbering */ 2469 snd_unit_init(); 2470 dsp_umax = PCMMAXUNIT; 2471 dsp_cmax = PCMMAXCHAN; 2472 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2473 } 2474 2475 static void 2476 dsp_sysuninit(void *p) 2477 { 2478 if (dsp_ehtag == NULL) 2479 return; 2480 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2481 dsp_ehtag = NULL; 2482 } 2483 2484 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2485 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2486 2487 char * 2488 dsp_unit2name(char *buf, size_t len, int unit) 2489 { 2490 int i, dtype; 2491 2492 KASSERT(buf != NULL && len != 0, 2493 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2494 2495 dtype = snd_unit2d(unit); 2496 2497 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2498 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2499 continue; 2500 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2501 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2502 return (buf); 2503 } 2504 2505 return (NULL); 2506 } 2507 2508 /** 2509 * @brief Handler for SNDCTL_AUDIOINFO. 2510 * 2511 * Gathers information about the audio device specified in ai->dev. If 2512 * ai->dev == -1, then this function gathers information about the current 2513 * device. If the call comes in on a non-audio device and ai->dev == -1, 2514 * return EINVAL. 2515 * 2516 * This routine is supposed to go practically straight to the hardware, 2517 * getting capabilities directly from the sound card driver, side-stepping 2518 * the intermediate channel interface. 2519 * 2520 * Note, however, that the usefulness of this command is significantly 2521 * decreased when requesting info about any device other than the one serving 2522 * the request. While each snddev_channel refers to a specific device node, 2523 * the converse is *not* true. Currently, when a sound device node is opened, 2524 * the sound subsystem scans for an available audio channel (or channels, if 2525 * opened in read+write) and then assigns them to the si_drv[12] private 2526 * data fields. As a result, any information returned linking a channel to 2527 * a specific character device isn't necessarily accurate. 2528 * 2529 * @note 2530 * Calling threads must not hold any snddev_info or pcm_channel locks. 2531 * 2532 * @param dev device on which the ioctl was issued 2533 * @param ai ioctl request data container 2534 * 2535 * @retval 0 success 2536 * @retval EINVAL ai->dev specifies an invalid device 2537 * 2538 * @todo Verify correctness of Doxygen tags. ;) 2539 */ 2540 int 2541 dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2542 { 2543 struct pcmchan_caps *caps; 2544 struct pcm_channel *ch; 2545 struct snddev_info *d; 2546 uint32_t fmts; 2547 int i, nchan, *rates, minch, maxch; 2548 char *devname, buf[CHN_NAMELEN]; 2549 2550 /* 2551 * If probing the device that received the ioctl, make sure it's a 2552 * DSP device. (Users may use this ioctl with /dev/mixer and 2553 * /dev/midi.) 2554 */ 2555 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2556 return (EINVAL); 2557 2558 ch = NULL; 2559 devname = NULL; 2560 nchan = 0; 2561 bzero(buf, sizeof(buf)); 2562 2563 /* 2564 * Search for the requested audio device (channel). Start by 2565 * iterating over pcm devices. 2566 */ 2567 for (i = 0; pcm_devclass != NULL && 2568 i < devclass_get_maxunit(pcm_devclass); i++) { 2569 d = devclass_get_softc(pcm_devclass, i); 2570 if (!PCM_REGISTERED(d)) 2571 continue; 2572 2573 /* XXX Need Giant magic entry ??? */ 2574 2575 /* See the note in function docblock */ 2576 PCM_UNLOCKASSERT(d); 2577 PCM_LOCK(d); 2578 2579 CHN_FOREACH(ch, d, channels.pcm) { 2580 CHN_UNLOCKASSERT(ch); 2581 CHN_LOCK(ch); 2582 if (ai->dev == -1) { 2583 if (DSP_REGISTERED(d, i_dev) && 2584 (ch == PCM_RDCH(i_dev) || /* record ch */ 2585 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2586 devname = dsp_unit2name(buf, 2587 sizeof(buf), ch->unit); 2588 } 2589 } else if (ai->dev == nchan) { 2590 devname = dsp_unit2name(buf, sizeof(buf), 2591 ch->unit); 2592 } 2593 if (devname != NULL) 2594 break; 2595 CHN_UNLOCK(ch); 2596 ++nchan; 2597 } 2598 2599 if (devname != NULL) { 2600 /* 2601 * At this point, the following synchronization stuff 2602 * has happened: 2603 * - a specific PCM device is locked. 2604 * - a specific audio channel has been locked, so be 2605 * sure to unlock when exiting; 2606 */ 2607 2608 caps = chn_getcaps(ch); 2609 2610 /* 2611 * With all handles collected, zero out the user's 2612 * container and begin filling in its fields. 2613 */ 2614 bzero((void *)ai, sizeof(oss_audioinfo)); 2615 2616 ai->dev = nchan; 2617 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2618 2619 if ((ch->flags & CHN_F_BUSY) == 0) 2620 ai->busy = 0; 2621 else 2622 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2623 2624 /** 2625 * @note 2626 * @c cmd - OSSv4 docs: "Only supported under Linux at 2627 * this moment." Cop-out, I know, but I'll save 2628 * running around in the process table for later. 2629 * Is there a risk of leaking information? 2630 */ 2631 ai->pid = ch->pid; 2632 2633 /* 2634 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2635 * Note, however, that a single channel operates in 2636 * only one direction, so PCM_CAP_DUPLEX is out. 2637 */ 2638 /** 2639 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2640 * these in pcmchan::caps? 2641 */ 2642 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2643 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2644 2645 /* 2646 * Collect formats supported @b natively by the 2647 * device. Also determine min/max channels. (I.e., 2648 * mono, stereo, or both?) 2649 * 2650 * If any channel is stereo, maxch = 2; 2651 * if all channels are stereo, minch = 2, too; 2652 * if any channel is mono, minch = 1; 2653 * and if all channels are mono, maxch = 1. 2654 */ 2655 minch = 0; 2656 maxch = 0; 2657 fmts = 0; 2658 for (i = 0; caps->fmtlist[i]; i++) { 2659 fmts |= caps->fmtlist[i]; 2660 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2661 minch = (minch == 0) ? 2 : minch; 2662 maxch = 2; 2663 } else { 2664 minch = 1; 2665 maxch = (maxch == 0) ? 1 : maxch; 2666 } 2667 } 2668 2669 if (ch->direction == PCMDIR_PLAY) 2670 ai->oformats = fmts; 2671 else 2672 ai->iformats = fmts; 2673 2674 /** 2675 * @note 2676 * @c magic - OSSv4 docs: "Reserved for internal use 2677 * by OSS." 2678 * 2679 * @par 2680 * @c card_number - OSSv4 docs: "Number of the sound 2681 * card where this device belongs or -1 if this 2682 * information is not available. Applications 2683 * should normally not use this field for any 2684 * purpose." 2685 */ 2686 ai->card_number = -1; 2687 /** 2688 * @todo @c song_name - depends first on 2689 * SNDCTL_[GS]ETSONG @todo @c label - depends 2690 * on SNDCTL_[GS]ETLABEL 2691 * @todo @c port_number - routing information? 2692 */ 2693 ai->port_number = -1; 2694 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2695 /** 2696 * @note 2697 * @c real_device - OSSv4 docs: "Obsolete." 2698 */ 2699 ai->real_device = -1; 2700 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2701 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2702 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2703 /** 2704 * @note 2705 * @c flags - OSSv4 docs: "Reserved for future use." 2706 * 2707 * @note 2708 * @c binding - OSSv4 docs: "Reserved for future use." 2709 * 2710 * @todo @c handle - haven't decided how to generate 2711 * this yet; bus, vendor, device IDs? 2712 */ 2713 ai->min_rate = caps->minspeed; 2714 ai->max_rate = caps->maxspeed; 2715 2716 ai->min_channels = minch; 2717 ai->max_channels = maxch; 2718 2719 ai->nrates = chn_getrates(ch, &rates); 2720 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2721 ai->nrates = OSS_MAX_SAMPLE_RATES; 2722 2723 for (i = 0; i < ai->nrates; i++) 2724 ai->rates[i] = rates[i]; 2725 2726 ai->next_play_engine = 0; 2727 ai->next_rec_engine = 0; 2728 2729 CHN_UNLOCK(ch); 2730 } 2731 2732 PCM_UNLOCK(d); 2733 2734 if (devname != NULL) 2735 return (0); 2736 } 2737 2738 /* Exhausted the search -- nothing is locked, so return. */ 2739 return (EINVAL); 2740 } 2741 2742 /** 2743 * @brief Assigns a PCM channel to a sync group. 2744 * 2745 * Sync groups are used to enable audio operations on multiple devices 2746 * simultaneously. They may be used with any number of devices and may 2747 * span across applications. Devices are added to groups with 2748 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2749 * SNDCTL_DSP_SYNCSTART ioctl. 2750 * 2751 * If the @c id field of the @c group parameter is set to zero, then a new 2752 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2753 * the group specified. 2754 * 2755 * @todo As far as memory allocation, should we assume that things are 2756 * okay and allocate with M_WAITOK before acquiring channel locks, 2757 * freeing later if not? 2758 * 2759 * @param wrch output channel associated w/ device (if any) 2760 * @param rdch input channel associated w/ device (if any) 2761 * @param group Sync group parameters 2762 * 2763 * @retval 0 success 2764 * @retval non-zero error to be propagated upstream 2765 */ 2766 static int 2767 dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2768 { 2769 struct pcmchan_syncmember *smrd, *smwr; 2770 struct pcmchan_syncgroup *sg; 2771 int ret, sg_ids[3]; 2772 2773 smrd = NULL; 2774 smwr = NULL; 2775 sg = NULL; 2776 ret = 0; 2777 2778 /* 2779 * Free_unr() may sleep, so store released syncgroup IDs until after 2780 * all locks are released. 2781 */ 2782 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2783 2784 PCM_SG_LOCK(); 2785 2786 /* 2787 * - Insert channel(s) into group's member list. 2788 * - Set CHN_F_NOTRIGGER on channel(s). 2789 * - Stop channel(s). 2790 */ 2791 2792 /* 2793 * If device's channels are already mapped to a group, unmap them. 2794 */ 2795 if (wrch) { 2796 CHN_LOCK(wrch); 2797 sg_ids[0] = chn_syncdestroy(wrch); 2798 } 2799 2800 if (rdch) { 2801 CHN_LOCK(rdch); 2802 sg_ids[1] = chn_syncdestroy(rdch); 2803 } 2804 2805 /* 2806 * Verify that mode matches character device properites. 2807 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2808 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2809 */ 2810 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2811 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2812 ret = EINVAL; 2813 goto out; 2814 } 2815 2816 /* 2817 * An id of zero indicates the user wants to create a new 2818 * syncgroup. 2819 */ 2820 if (group->id == 0) { 2821 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2822 if (sg != NULL) { 2823 SLIST_INIT(&sg->members); 2824 sg->id = alloc_unr(pcmsg_unrhdr); 2825 2826 group->id = sg->id; 2827 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2828 } else 2829 ret = ENOMEM; 2830 } else { 2831 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2832 if (sg->id == group->id) 2833 break; 2834 } 2835 if (sg == NULL) 2836 ret = EINVAL; 2837 } 2838 2839 /* Couldn't create or find a syncgroup. Fail. */ 2840 if (sg == NULL) 2841 goto out; 2842 2843 /* 2844 * Allocate a syncmember, assign it and a channel together, and 2845 * insert into syncgroup. 2846 */ 2847 if (group->mode & PCM_ENABLE_INPUT) { 2848 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2849 if (smrd == NULL) { 2850 ret = ENOMEM; 2851 goto out; 2852 } 2853 2854 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2855 smrd->parent = sg; 2856 smrd->ch = rdch; 2857 2858 chn_abort(rdch); 2859 rdch->flags |= CHN_F_NOTRIGGER; 2860 rdch->sm = smrd; 2861 } 2862 2863 if (group->mode & PCM_ENABLE_OUTPUT) { 2864 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2865 if (smwr == NULL) { 2866 ret = ENOMEM; 2867 goto out; 2868 } 2869 2870 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2871 smwr->parent = sg; 2872 smwr->ch = wrch; 2873 2874 chn_abort(wrch); 2875 wrch->flags |= CHN_F_NOTRIGGER; 2876 wrch->sm = smwr; 2877 } 2878 2879 2880 out: 2881 if (ret != 0) { 2882 if (smrd != NULL) 2883 free(smrd, M_DEVBUF); 2884 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2885 sg_ids[2] = sg->id; 2886 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2887 free(sg, M_DEVBUF); 2888 } 2889 2890 if (wrch) 2891 wrch->sm = NULL; 2892 if (rdch) 2893 rdch->sm = NULL; 2894 } 2895 2896 if (wrch) 2897 CHN_UNLOCK(wrch); 2898 if (rdch) 2899 CHN_UNLOCK(rdch); 2900 2901 PCM_SG_UNLOCK(); 2902 2903 if (sg_ids[0]) 2904 free_unr(pcmsg_unrhdr, sg_ids[0]); 2905 if (sg_ids[1]) 2906 free_unr(pcmsg_unrhdr, sg_ids[1]); 2907 if (sg_ids[2]) 2908 free_unr(pcmsg_unrhdr, sg_ids[2]); 2909 2910 return (ret); 2911 } 2912 2913 /** 2914 * @brief Launch a sync group into action 2915 * 2916 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2917 * iterates over all members, triggering them along the way. 2918 * 2919 * @note Caller must not hold any channel locks. 2920 * 2921 * @param sg_id sync group identifier 2922 * 2923 * @retval 0 success 2924 * @retval non-zero error worthy of propagating upstream to user 2925 */ 2926 static int 2927 dsp_oss_syncstart(int sg_id) 2928 { 2929 struct pcmchan_syncmember *sm, *sm_tmp; 2930 struct pcmchan_syncgroup *sg; 2931 struct pcm_channel *c; 2932 int ret, needlocks; 2933 2934 /* Get the synclists lock */ 2935 PCM_SG_LOCK(); 2936 2937 do { 2938 ret = 0; 2939 needlocks = 0; 2940 2941 /* Search for syncgroup by ID */ 2942 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2943 if (sg->id == sg_id) 2944 break; 2945 } 2946 2947 /* Return EINVAL if not found */ 2948 if (sg == NULL) { 2949 ret = EINVAL; 2950 break; 2951 } 2952 2953 /* Any removals resulting in an empty group should've handled this */ 2954 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2955 2956 /* 2957 * Attempt to lock all member channels - if any are already 2958 * locked, unlock those acquired, sleep for a bit, and try 2959 * again. 2960 */ 2961 SLIST_FOREACH(sm, &sg->members, link) { 2962 if (CHN_TRYLOCK(sm->ch) == 0) { 2963 int timo = hz * 5/1000; 2964 if (timo < 1) 2965 timo = 1; 2966 2967 /* Release all locked channels so far, retry */ 2968 SLIST_FOREACH(sm_tmp, &sg->members, link) { 2969 /* sm is the member already locked */ 2970 if (sm == sm_tmp) 2971 break; 2972 CHN_UNLOCK(sm_tmp->ch); 2973 } 2974 2975 /** @todo Is PRIBIO correct/ */ 2976 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 2977 PRIBIO | PCATCH, "pcmsg", timo); 2978 if (ret == EINTR || ret == ERESTART) 2979 break; 2980 2981 needlocks = 1; 2982 ret = 0; /* Assumes ret == EAGAIN... */ 2983 } 2984 } 2985 } while (needlocks && ret == 0); 2986 2987 /* Proceed only if no errors encountered. */ 2988 if (ret == 0) { 2989 /* Launch channels */ 2990 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 2991 SLIST_REMOVE_HEAD(&sg->members, link); 2992 2993 c = sm->ch; 2994 c->sm = NULL; 2995 chn_start(c, 1); 2996 c->flags &= ~CHN_F_NOTRIGGER; 2997 CHN_UNLOCK(c); 2998 2999 free(sm, M_DEVBUF); 3000 } 3001 3002 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3003 free(sg, M_DEVBUF); 3004 } 3005 3006 PCM_SG_UNLOCK(); 3007 3008 /* 3009 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3010 * first. 3011 */ 3012 if (ret == 0) 3013 free_unr(pcmsg_unrhdr, sg_id); 3014 3015 return (ret); 3016 } 3017 3018 /** 3019 * @brief Handler for SNDCTL_DSP_POLICY 3020 * 3021 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3022 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3023 * specifying those two parameters, s/he simply selects a number from 0..10 3024 * which corresponds to a buffer size. Smaller numbers request smaller 3025 * buffers with lower latencies (at greater overhead from more frequent 3026 * interrupts), while greater numbers behave in the opposite manner. 3027 * 3028 * The 4Front spec states that a value of 5 should be the default. However, 3029 * this implementation deviates slightly by using a linear scale without 3030 * consulting drivers. I.e., even though drivers may have different default 3031 * buffer sizes, a policy argument of 5 will have the same result across 3032 * all drivers. 3033 * 3034 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3035 * more information. 3036 * 3037 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3038 * work with hardware drivers directly. 3039 * 3040 * @note PCM channel arguments must not be locked by caller. 3041 * 3042 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3043 * @param rdch " recording channel (optional; may be NULL) 3044 * @param policy Integer from [0:10] 3045 * 3046 * @retval 0 constant (for now) 3047 */ 3048 static int 3049 dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3050 { 3051 int ret; 3052 3053 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3054 return (EIO); 3055 3056 /* Default: success */ 3057 ret = 0; 3058 3059 if (rdch) { 3060 CHN_LOCK(rdch); 3061 ret = chn_setlatency(rdch, policy); 3062 CHN_UNLOCK(rdch); 3063 } 3064 3065 if (wrch && ret == 0) { 3066 CHN_LOCK(wrch); 3067 ret = chn_setlatency(wrch, policy); 3068 CHN_UNLOCK(wrch); 3069 } 3070 3071 if (ret) 3072 ret = EIO; 3073 3074 return (ret); 3075 } 3076 3077 /** 3078 * @brief Enable or disable "cooked" mode 3079 * 3080 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3081 * is the default, the sound system handles rate and format conversions 3082 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3083 * operates with 44100Hz/16bit/signed samples). 3084 * 3085 * Disabling cooked mode is intended for applications wanting to mmap() 3086 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3087 * feeder architecture, presumably to gain as much control over audio 3088 * hardware as possible. 3089 * 3090 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3091 * for more details. 3092 * 3093 * @param wrch playback channel (optional; may be NULL) 3094 * @param rdch recording channel (optional; may be NULL) 3095 * @param enabled 0 = raw mode, 1 = cooked mode 3096 * 3097 * @retval EINVAL Operation not yet supported. 3098 */ 3099 static int 3100 dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3101 { 3102 3103 /* 3104 * XXX I just don't get it. Why don't they call it 3105 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3106 * This is just plain so confusing, incoherent, 3107 * <insert any non-printable characters here>. 3108 */ 3109 if (!(enabled == 1 || enabled == 0)) 3110 return (EINVAL); 3111 3112 /* 3113 * I won't give in. I'm inverting its logic here and now. 3114 * Brag all you want, but "BITPERFECT" should be the better 3115 * term here. 3116 */ 3117 enabled ^= 0x00000001; 3118 3119 if (wrch != NULL) { 3120 CHN_LOCK(wrch); 3121 wrch->flags &= ~CHN_F_BITPERFECT; 3122 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3123 CHN_UNLOCK(wrch); 3124 } 3125 3126 if (rdch != NULL) { 3127 CHN_LOCK(rdch); 3128 rdch->flags &= ~CHN_F_BITPERFECT; 3129 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3130 CHN_UNLOCK(rdch); 3131 } 3132 3133 return (0); 3134 } 3135 3136 /** 3137 * @brief Retrieve channel interleaving order 3138 * 3139 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3140 * 3141 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3142 * for more details. 3143 * 3144 * @note As the ioctl definition is still under construction, FreeBSD 3145 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3146 * 3147 * @param wrch playback channel (optional; may be NULL) 3148 * @param rdch recording channel (optional; may be NULL) 3149 * @param map channel map (result will be stored there) 3150 * 3151 * @retval EINVAL Operation not yet supported. 3152 */ 3153 static int 3154 dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3155 { 3156 struct pcm_channel *ch; 3157 int ret; 3158 3159 ch = (wrch != NULL) ? wrch : rdch; 3160 if (ch != NULL) { 3161 CHN_LOCK(ch); 3162 ret = chn_oss_getorder(ch, map); 3163 CHN_UNLOCK(ch); 3164 } else 3165 ret = EINVAL; 3166 3167 return (ret); 3168 } 3169 3170 /** 3171 * @brief Specify channel interleaving order 3172 * 3173 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3174 * 3175 * @note As the ioctl definition is still under construction, FreeBSD 3176 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3177 * 3178 * @param wrch playback channel (optional; may be NULL) 3179 * @param rdch recording channel (optional; may be NULL) 3180 * @param map channel map 3181 * 3182 * @retval EINVAL Operation not yet supported. 3183 */ 3184 static int 3185 dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3186 { 3187 int ret; 3188 3189 ret = 0; 3190 3191 if (wrch != NULL) { 3192 CHN_LOCK(wrch); 3193 ret = chn_oss_setorder(wrch, map); 3194 CHN_UNLOCK(wrch); 3195 } 3196 3197 if (ret == 0 && rdch != NULL) { 3198 CHN_LOCK(rdch); 3199 ret = chn_oss_setorder(rdch, map); 3200 CHN_UNLOCK(rdch); 3201 } 3202 3203 return (ret); 3204 } 3205 3206 static int 3207 dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3208 int *mask) 3209 { 3210 struct pcm_channel *ch; 3211 uint32_t chnmask; 3212 int ret; 3213 3214 chnmask = 0; 3215 ch = (wrch != NULL) ? wrch : rdch; 3216 3217 if (ch != NULL) { 3218 CHN_LOCK(ch); 3219 ret = chn_oss_getmask(ch, &chnmask); 3220 CHN_UNLOCK(ch); 3221 } else 3222 ret = EINVAL; 3223 3224 if (ret == 0) 3225 *mask = chnmask; 3226 3227 return (ret); 3228 } 3229 3230 #ifdef OSSV4_EXPERIMENT 3231 /** 3232 * @brief Retrieve an audio device's label 3233 * 3234 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3235 * 3236 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3237 * for more details. 3238 * 3239 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3240 * consoles) can show variable "labels" for certain controls. By default 3241 * the application name (say quake) is shown as the label but 3242 * applications may change the labels themselves." 3243 * 3244 * @note As the ioctl definition is still under construction, FreeBSD 3245 * does not currently support @c SNDCTL_GETLABEL. 3246 * 3247 * @param wrch playback channel (optional; may be NULL) 3248 * @param rdch recording channel (optional; may be NULL) 3249 * @param label label gets copied here 3250 * 3251 * @retval EINVAL Operation not yet supported. 3252 */ 3253 static int 3254 dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3255 { 3256 return (EINVAL); 3257 } 3258 3259 /** 3260 * @brief Specify an audio device's label 3261 * 3262 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3263 * comments for @c dsp_oss_getlabel immediately above. 3264 * 3265 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3266 * for more details. 3267 * 3268 * @note As the ioctl definition is still under construction, FreeBSD 3269 * does not currently support SNDCTL_SETLABEL. 3270 * 3271 * @param wrch playback channel (optional; may be NULL) 3272 * @param rdch recording channel (optional; may be NULL) 3273 * @param label label gets copied from here 3274 * 3275 * @retval EINVAL Operation not yet supported. 3276 */ 3277 static int 3278 dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3279 { 3280 return (EINVAL); 3281 } 3282 3283 /** 3284 * @brief Retrieve name of currently played song 3285 * 3286 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3287 * tell the system the name of the currently playing song, which would be 3288 * visible in @c /dev/sndstat. 3289 * 3290 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3291 * for more details. 3292 * 3293 * @note As the ioctl definition is still under construction, FreeBSD 3294 * does not currently support SNDCTL_GETSONG. 3295 * 3296 * @param wrch playback channel (optional; may be NULL) 3297 * @param rdch recording channel (optional; may be NULL) 3298 * @param song song name gets copied here 3299 * 3300 * @retval EINVAL Operation not yet supported. 3301 */ 3302 static int 3303 dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3304 { 3305 return (EINVAL); 3306 } 3307 3308 /** 3309 * @brief Retrieve name of currently played song 3310 * 3311 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3312 * tell the system the name of the currently playing song, which would be 3313 * visible in @c /dev/sndstat. 3314 * 3315 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3316 * for more details. 3317 * 3318 * @note As the ioctl definition is still under construction, FreeBSD 3319 * does not currently support SNDCTL_SETSONG. 3320 * 3321 * @param wrch playback channel (optional; may be NULL) 3322 * @param rdch recording channel (optional; may be NULL) 3323 * @param song song name gets copied from here 3324 * 3325 * @retval EINVAL Operation not yet supported. 3326 */ 3327 static int 3328 dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3329 { 3330 return (EINVAL); 3331 } 3332 3333 /** 3334 * @brief Rename a device 3335 * 3336 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3337 * 3338 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3339 * more details. 3340 * 3341 * From Hannu@4Front: "This call is used to change the device name 3342 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3343 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3344 * name depending on the current context (for example 'OSS virtual wave table 3345 * synth' or 'VoIP link to London')." 3346 * 3347 * @note As the ioctl definition is still under construction, FreeBSD 3348 * does not currently support SNDCTL_SETNAME. 3349 * 3350 * @param wrch playback channel (optional; may be NULL) 3351 * @param rdch recording channel (optional; may be NULL) 3352 * @param name new device name gets copied from here 3353 * 3354 * @retval EINVAL Operation not yet supported. 3355 */ 3356 static int 3357 dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3358 { 3359 return (EINVAL); 3360 } 3361 #endif /* !OSSV4_EXPERIMENT */ 3362