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 int *arg_i, ret, tmp, xcmd; 1066 1067 d = dsp_get_info(i_dev); 1068 if (!DSP_REGISTERED(d, i_dev)) 1069 return (EBADF); 1070 1071 PCM_GIANT_ENTER(d); 1072 1073 arg_i = (int *)arg; 1074 ret = 0; 1075 xcmd = 0; 1076 chn = NULL; 1077 1078 if (IOCGROUP(cmd) == 'M') { 1079 if (cmd == OSS_GETVERSION) { 1080 *arg_i = SOUND_VERSION; 1081 PCM_GIANT_EXIT(d); 1082 return (0); 1083 } 1084 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1085 if (ret != -1) { 1086 PCM_GIANT_EXIT(d); 1087 return (ret); 1088 } 1089 1090 if (d->mixer_dev != NULL) { 1091 PCM_ACQUIRE_QUICK(d); 1092 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1093 MIXER_CMD_DIRECT); 1094 PCM_RELEASE_QUICK(d); 1095 } else 1096 ret = EBADF; 1097 1098 PCM_GIANT_EXIT(d); 1099 1100 return (ret); 1101 } 1102 1103 /* 1104 * Certain ioctls may be made on any type of device (audio, mixer, 1105 * and MIDI). Handle those special cases here. 1106 */ 1107 if (IOCGROUP(cmd) == 'X') { 1108 PCM_ACQUIRE_QUICK(d); 1109 switch(cmd) { 1110 case SNDCTL_SYSINFO: 1111 sound_oss_sysinfo((oss_sysinfo *)arg); 1112 break; 1113 case SNDCTL_CARDINFO: 1114 ret = sound_oss_card_info((oss_card_info *)arg); 1115 break; 1116 case SNDCTL_AUDIOINFO: 1117 case SNDCTL_AUDIOINFO_EX: 1118 case SNDCTL_ENGINEINFO: 1119 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1120 break; 1121 case SNDCTL_MIXERINFO: 1122 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1123 break; 1124 default: 1125 ret = EINVAL; 1126 } 1127 PCM_RELEASE_QUICK(d); 1128 PCM_GIANT_EXIT(d); 1129 return (ret); 1130 } 1131 1132 getchns(i_dev, &rdch, &wrch, 0); 1133 1134 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1135 wrch = NULL; 1136 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1137 rdch = NULL; 1138 1139 if (wrch == NULL && rdch == NULL) { 1140 PCM_GIANT_EXIT(d); 1141 return (EINVAL); 1142 } 1143 1144 switch(cmd) { 1145 #ifdef OLDPCM_IOCTL 1146 /* 1147 * we start with the new ioctl interface. 1148 */ 1149 case AIONWRITE: /* how many bytes can write ? */ 1150 if (wrch) { 1151 CHN_LOCK(wrch); 1152 /* 1153 if (wrch && wrch->bufhard.dl) 1154 while (chn_wrfeed(wrch) == 0); 1155 */ 1156 *arg_i = sndbuf_getfree(wrch->bufsoft); 1157 CHN_UNLOCK(wrch); 1158 } else { 1159 *arg_i = 0; 1160 ret = EINVAL; 1161 } 1162 break; 1163 1164 case AIOSSIZE: /* set the current blocksize */ 1165 { 1166 struct snd_size *p = (struct snd_size *)arg; 1167 1168 p->play_size = 0; 1169 p->rec_size = 0; 1170 PCM_ACQUIRE_QUICK(d); 1171 if (wrch) { 1172 CHN_LOCK(wrch); 1173 chn_setblocksize(wrch, 2, p->play_size); 1174 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1175 CHN_UNLOCK(wrch); 1176 } 1177 if (rdch) { 1178 CHN_LOCK(rdch); 1179 chn_setblocksize(rdch, 2, p->rec_size); 1180 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1181 CHN_UNLOCK(rdch); 1182 } 1183 PCM_RELEASE_QUICK(d); 1184 } 1185 break; 1186 case AIOGSIZE: /* get the current blocksize */ 1187 { 1188 struct snd_size *p = (struct snd_size *)arg; 1189 1190 if (wrch) { 1191 CHN_LOCK(wrch); 1192 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1193 CHN_UNLOCK(wrch); 1194 } 1195 if (rdch) { 1196 CHN_LOCK(rdch); 1197 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1198 CHN_UNLOCK(rdch); 1199 } 1200 } 1201 break; 1202 1203 case AIOSFMT: 1204 case AIOGFMT: 1205 { 1206 snd_chan_param *p = (snd_chan_param *)arg; 1207 1208 if (cmd == AIOSFMT && 1209 ((p->play_format != 0 && p->play_rate == 0) || 1210 (p->rec_format != 0 && p->rec_rate == 0))) { 1211 ret = EINVAL; 1212 break; 1213 } 1214 PCM_ACQUIRE_QUICK(d); 1215 if (wrch) { 1216 CHN_LOCK(wrch); 1217 if (cmd == AIOSFMT && p->play_format != 0) { 1218 chn_setformat(wrch, 1219 SND_FORMAT(p->play_format, 1220 AFMT_CHANNEL(wrch->format), 1221 AFMT_EXTCHANNEL(wrch->format))); 1222 chn_setspeed(wrch, p->play_rate); 1223 } 1224 p->play_rate = wrch->speed; 1225 p->play_format = AFMT_ENCODING(wrch->format); 1226 CHN_UNLOCK(wrch); 1227 } else { 1228 p->play_rate = 0; 1229 p->play_format = 0; 1230 } 1231 if (rdch) { 1232 CHN_LOCK(rdch); 1233 if (cmd == AIOSFMT && p->rec_format != 0) { 1234 chn_setformat(rdch, 1235 SND_FORMAT(p->rec_format, 1236 AFMT_CHANNEL(rdch->format), 1237 AFMT_EXTCHANNEL(rdch->format))); 1238 chn_setspeed(rdch, p->rec_rate); 1239 } 1240 p->rec_rate = rdch->speed; 1241 p->rec_format = AFMT_ENCODING(rdch->format); 1242 CHN_UNLOCK(rdch); 1243 } else { 1244 p->rec_rate = 0; 1245 p->rec_format = 0; 1246 } 1247 PCM_RELEASE_QUICK(d); 1248 } 1249 break; 1250 1251 case AIOGCAP: /* get capabilities */ 1252 { 1253 snd_capabilities *p = (snd_capabilities *)arg; 1254 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1255 struct cdev *pdev; 1256 1257 PCM_LOCK(d); 1258 if (rdch) { 1259 CHN_LOCK(rdch); 1260 rcaps = chn_getcaps(rdch); 1261 } 1262 if (wrch) { 1263 CHN_LOCK(wrch); 1264 pcaps = chn_getcaps(wrch); 1265 } 1266 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1267 pcaps? pcaps->minspeed : 0); 1268 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1269 pcaps? pcaps->maxspeed : 1000000); 1270 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1271 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1272 /* XXX bad on sb16 */ 1273 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1274 (wrch? chn_getformats(wrch) : 0xffffffff); 1275 if (rdch && wrch) 1276 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1277 pdev = d->mixer_dev; 1278 p->mixers = 1; /* default: one mixer */ 1279 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1280 p->left = p->right = 100; 1281 if (wrch) 1282 CHN_UNLOCK(wrch); 1283 if (rdch) 1284 CHN_UNLOCK(rdch); 1285 PCM_UNLOCK(d); 1286 } 1287 break; 1288 1289 case AIOSTOP: 1290 if (*arg_i == AIOSYNC_PLAY && wrch) { 1291 CHN_LOCK(wrch); 1292 *arg_i = chn_abort(wrch); 1293 CHN_UNLOCK(wrch); 1294 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1295 CHN_LOCK(rdch); 1296 *arg_i = chn_abort(rdch); 1297 CHN_UNLOCK(rdch); 1298 } else { 1299 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1300 *arg_i = 0; 1301 } 1302 break; 1303 1304 case AIOSYNC: 1305 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1306 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1307 break; 1308 #endif 1309 /* 1310 * here follow the standard ioctls (filio.h etc.) 1311 */ 1312 case FIONREAD: /* get # bytes to read */ 1313 if (rdch) { 1314 CHN_LOCK(rdch); 1315 /* if (rdch && rdch->bufhard.dl) 1316 while (chn_rdfeed(rdch) == 0); 1317 */ 1318 *arg_i = sndbuf_getready(rdch->bufsoft); 1319 CHN_UNLOCK(rdch); 1320 } else { 1321 *arg_i = 0; 1322 ret = EINVAL; 1323 } 1324 break; 1325 1326 case FIOASYNC: /*set/clear async i/o */ 1327 DEB( printf("FIOASYNC\n") ; ) 1328 break; 1329 1330 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1331 case FIONBIO: /* set/clear non-blocking i/o */ 1332 if (rdch) { 1333 CHN_LOCK(rdch); 1334 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1335 rdch->flags |= CHN_F_NBIO; 1336 else 1337 rdch->flags &= ~CHN_F_NBIO; 1338 CHN_UNLOCK(rdch); 1339 } 1340 if (wrch) { 1341 CHN_LOCK(wrch); 1342 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1343 wrch->flags |= CHN_F_NBIO; 1344 else 1345 wrch->flags &= ~CHN_F_NBIO; 1346 CHN_UNLOCK(wrch); 1347 } 1348 break; 1349 1350 /* 1351 * Finally, here is the linux-compatible ioctl interface 1352 */ 1353 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1354 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1355 case SNDCTL_DSP_GETBLKSIZE: 1356 chn = wrch ? wrch : rdch; 1357 if (chn) { 1358 CHN_LOCK(chn); 1359 *arg_i = sndbuf_getblksz(chn->bufsoft); 1360 CHN_UNLOCK(chn); 1361 } else { 1362 *arg_i = 0; 1363 ret = EINVAL; 1364 } 1365 break; 1366 1367 case SNDCTL_DSP_SETBLKSIZE: 1368 RANGE(*arg_i, 16, 65536); 1369 PCM_ACQUIRE_QUICK(d); 1370 if (wrch) { 1371 CHN_LOCK(wrch); 1372 chn_setblocksize(wrch, 2, *arg_i); 1373 CHN_UNLOCK(wrch); 1374 } 1375 if (rdch) { 1376 CHN_LOCK(rdch); 1377 chn_setblocksize(rdch, 2, *arg_i); 1378 CHN_UNLOCK(rdch); 1379 } 1380 PCM_RELEASE_QUICK(d); 1381 break; 1382 1383 case SNDCTL_DSP_RESET: 1384 DEB(printf("dsp reset\n")); 1385 if (wrch) { 1386 CHN_LOCK(wrch); 1387 chn_abort(wrch); 1388 chn_resetbuf(wrch); 1389 CHN_UNLOCK(wrch); 1390 } 1391 if (rdch) { 1392 CHN_LOCK(rdch); 1393 chn_abort(rdch); 1394 chn_resetbuf(rdch); 1395 CHN_UNLOCK(rdch); 1396 } 1397 break; 1398 1399 case SNDCTL_DSP_SYNC: 1400 DEB(printf("dsp sync\n")); 1401 /* chn_sync may sleep */ 1402 if (wrch) { 1403 CHN_LOCK(wrch); 1404 chn_sync(wrch, 0); 1405 CHN_UNLOCK(wrch); 1406 } 1407 break; 1408 1409 case SNDCTL_DSP_SPEED: 1410 /* chn_setspeed may sleep */ 1411 tmp = 0; 1412 PCM_ACQUIRE_QUICK(d); 1413 if (wrch) { 1414 CHN_LOCK(wrch); 1415 ret = chn_setspeed(wrch, *arg_i); 1416 tmp = wrch->speed; 1417 CHN_UNLOCK(wrch); 1418 } 1419 if (rdch && ret == 0) { 1420 CHN_LOCK(rdch); 1421 ret = chn_setspeed(rdch, *arg_i); 1422 if (tmp == 0) 1423 tmp = rdch->speed; 1424 CHN_UNLOCK(rdch); 1425 } 1426 PCM_RELEASE_QUICK(d); 1427 *arg_i = tmp; 1428 break; 1429 1430 case SOUND_PCM_READ_RATE: 1431 chn = wrch ? wrch : rdch; 1432 if (chn) { 1433 CHN_LOCK(chn); 1434 *arg_i = chn->speed; 1435 CHN_UNLOCK(chn); 1436 } else { 1437 *arg_i = 0; 1438 ret = EINVAL; 1439 } 1440 break; 1441 1442 case SNDCTL_DSP_STEREO: 1443 tmp = -1; 1444 *arg_i = (*arg_i)? 2 : 1; 1445 PCM_ACQUIRE_QUICK(d); 1446 if (wrch) { 1447 CHN_LOCK(wrch); 1448 ret = chn_setformat(wrch, 1449 SND_FORMAT(wrch->format, *arg_i, 0)); 1450 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1451 CHN_UNLOCK(wrch); 1452 } 1453 if (rdch && ret == 0) { 1454 CHN_LOCK(rdch); 1455 ret = chn_setformat(rdch, 1456 SND_FORMAT(rdch->format, *arg_i, 0)); 1457 if (tmp == -1) 1458 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1459 CHN_UNLOCK(rdch); 1460 } 1461 PCM_RELEASE_QUICK(d); 1462 *arg_i = tmp; 1463 break; 1464 1465 case SOUND_PCM_WRITE_CHANNELS: 1466 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1467 if (*arg_i < 0) { 1468 *arg_i = 0; 1469 ret = EINVAL; 1470 break; 1471 } 1472 if (*arg_i != 0) { 1473 struct pcmchan_matrix *m; 1474 uint32_t ext; 1475 1476 tmp = 0; 1477 if (*arg_i > SND_CHN_MAX) 1478 *arg_i = SND_CHN_MAX; 1479 1480 m = feeder_matrix_default_channel_map(*arg_i); 1481 if (m != NULL) 1482 ext = m->ext; 1483 else 1484 ext = 0; 1485 1486 PCM_ACQUIRE_QUICK(d); 1487 if (wrch) { 1488 CHN_LOCK(wrch); 1489 ret = chn_setformat(wrch, 1490 SND_FORMAT(wrch->format, *arg_i, ext)); 1491 tmp = AFMT_CHANNEL(wrch->format); 1492 CHN_UNLOCK(wrch); 1493 } 1494 if (rdch && ret == 0) { 1495 CHN_LOCK(rdch); 1496 ret = chn_setformat(rdch, 1497 SND_FORMAT(rdch->format, *arg_i, ext)); 1498 if (tmp == 0) 1499 tmp = AFMT_CHANNEL(rdch->format); 1500 CHN_UNLOCK(rdch); 1501 } 1502 PCM_RELEASE_QUICK(d); 1503 *arg_i = tmp; 1504 } else { 1505 chn = wrch ? wrch : rdch; 1506 CHN_LOCK(chn); 1507 *arg_i = AFMT_CHANNEL(chn->format); 1508 CHN_UNLOCK(chn); 1509 } 1510 break; 1511 1512 case SOUND_PCM_READ_CHANNELS: 1513 chn = wrch ? wrch : rdch; 1514 if (chn) { 1515 CHN_LOCK(chn); 1516 *arg_i = AFMT_CHANNEL(chn->format); 1517 CHN_UNLOCK(chn); 1518 } else { 1519 *arg_i = 0; 1520 ret = EINVAL; 1521 } 1522 break; 1523 1524 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1525 chn = wrch ? wrch : rdch; 1526 if (chn) { 1527 CHN_LOCK(chn); 1528 *arg_i = chn_getformats(chn); 1529 CHN_UNLOCK(chn); 1530 } else { 1531 *arg_i = 0; 1532 ret = EINVAL; 1533 } 1534 break; 1535 1536 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1537 if (*arg_i != AFMT_QUERY) { 1538 tmp = 0; 1539 PCM_ACQUIRE_QUICK(d); 1540 if (wrch) { 1541 CHN_LOCK(wrch); 1542 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1543 AFMT_CHANNEL(wrch->format), 1544 AFMT_EXTCHANNEL(wrch->format))); 1545 tmp = wrch->format; 1546 CHN_UNLOCK(wrch); 1547 } 1548 if (rdch && ret == 0) { 1549 CHN_LOCK(rdch); 1550 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1551 AFMT_CHANNEL(rdch->format), 1552 AFMT_EXTCHANNEL(rdch->format))); 1553 if (tmp == 0) 1554 tmp = rdch->format; 1555 CHN_UNLOCK(rdch); 1556 } 1557 PCM_RELEASE_QUICK(d); 1558 *arg_i = AFMT_ENCODING(tmp); 1559 } else { 1560 chn = wrch ? wrch : rdch; 1561 CHN_LOCK(chn); 1562 *arg_i = AFMT_ENCODING(chn->format); 1563 CHN_UNLOCK(chn); 1564 } 1565 break; 1566 1567 case SNDCTL_DSP_SETFRAGMENT: 1568 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1569 { 1570 uint32_t fragln = (*arg_i) & 0x0000ffff; 1571 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1572 uint32_t fragsz; 1573 uint32_t r_maxfrags, r_fragsz; 1574 1575 RANGE(fragln, 4, 16); 1576 fragsz = 1 << fragln; 1577 1578 if (maxfrags == 0) 1579 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1580 if (maxfrags < 2) 1581 maxfrags = 2; 1582 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1583 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1584 1585 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1586 PCM_ACQUIRE_QUICK(d); 1587 if (rdch) { 1588 CHN_LOCK(rdch); 1589 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1590 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1591 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1592 CHN_UNLOCK(rdch); 1593 } else { 1594 r_maxfrags = maxfrags; 1595 r_fragsz = fragsz; 1596 } 1597 if (wrch && ret == 0) { 1598 CHN_LOCK(wrch); 1599 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1600 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1601 fragsz = sndbuf_getblksz(wrch->bufsoft); 1602 CHN_UNLOCK(wrch); 1603 } else { /* use whatever came from the read channel */ 1604 maxfrags = r_maxfrags; 1605 fragsz = r_fragsz; 1606 } 1607 PCM_RELEASE_QUICK(d); 1608 1609 fragln = 0; 1610 while (fragsz > 1) { 1611 fragln++; 1612 fragsz >>= 1; 1613 } 1614 *arg_i = (maxfrags << 16) | fragln; 1615 } 1616 break; 1617 1618 case SNDCTL_DSP_GETISPACE: 1619 /* return the size of data available in the input queue */ 1620 { 1621 audio_buf_info *a = (audio_buf_info *)arg; 1622 if (rdch) { 1623 struct snd_dbuf *bs = rdch->bufsoft; 1624 1625 CHN_LOCK(rdch); 1626 a->bytes = sndbuf_getready(bs); 1627 a->fragments = a->bytes / sndbuf_getblksz(bs); 1628 a->fragstotal = sndbuf_getblkcnt(bs); 1629 a->fragsize = sndbuf_getblksz(bs); 1630 CHN_UNLOCK(rdch); 1631 } else 1632 ret = EINVAL; 1633 } 1634 break; 1635 1636 case SNDCTL_DSP_GETOSPACE: 1637 /* return space available in the output queue */ 1638 { 1639 audio_buf_info *a = (audio_buf_info *)arg; 1640 if (wrch) { 1641 struct snd_dbuf *bs = wrch->bufsoft; 1642 1643 CHN_LOCK(wrch); 1644 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1645 a->bytes = sndbuf_getfree(bs); 1646 a->fragments = a->bytes / sndbuf_getblksz(bs); 1647 a->fragstotal = sndbuf_getblkcnt(bs); 1648 a->fragsize = sndbuf_getblksz(bs); 1649 CHN_UNLOCK(wrch); 1650 } else 1651 ret = EINVAL; 1652 } 1653 break; 1654 1655 case SNDCTL_DSP_GETIPTR: 1656 { 1657 count_info *a = (count_info *)arg; 1658 if (rdch) { 1659 struct snd_dbuf *bs = rdch->bufsoft; 1660 1661 CHN_LOCK(rdch); 1662 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1663 a->bytes = sndbuf_gettotal(bs); 1664 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1665 a->ptr = sndbuf_getfreeptr(bs); 1666 rdch->blocks = sndbuf_getblocks(bs); 1667 CHN_UNLOCK(rdch); 1668 } else 1669 ret = EINVAL; 1670 } 1671 break; 1672 1673 case SNDCTL_DSP_GETOPTR: 1674 { 1675 count_info *a = (count_info *)arg; 1676 if (wrch) { 1677 struct snd_dbuf *bs = wrch->bufsoft; 1678 1679 CHN_LOCK(wrch); 1680 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1681 a->bytes = sndbuf_gettotal(bs); 1682 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1683 a->ptr = sndbuf_getreadyptr(bs); 1684 wrch->blocks = sndbuf_getblocks(bs); 1685 CHN_UNLOCK(wrch); 1686 } else 1687 ret = EINVAL; 1688 } 1689 break; 1690 1691 case SNDCTL_DSP_GETCAPS: 1692 PCM_LOCK(d); 1693 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1694 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1695 *arg_i |= PCM_CAP_DUPLEX; 1696 PCM_UNLOCK(d); 1697 break; 1698 1699 case SOUND_PCM_READ_BITS: 1700 chn = wrch ? wrch : rdch; 1701 if (chn) { 1702 CHN_LOCK(chn); 1703 if (chn->format & AFMT_8BIT) 1704 *arg_i = 8; 1705 else if (chn->format & AFMT_16BIT) 1706 *arg_i = 16; 1707 else if (chn->format & AFMT_24BIT) 1708 *arg_i = 24; 1709 else if (chn->format & AFMT_32BIT) 1710 *arg_i = 32; 1711 else 1712 ret = EINVAL; 1713 CHN_UNLOCK(chn); 1714 } else { 1715 *arg_i = 0; 1716 ret = EINVAL; 1717 } 1718 break; 1719 1720 case SNDCTL_DSP_SETTRIGGER: 1721 if (rdch) { 1722 CHN_LOCK(rdch); 1723 rdch->flags &= ~CHN_F_NOTRIGGER; 1724 if (*arg_i & PCM_ENABLE_INPUT) 1725 chn_start(rdch, 1); 1726 else { 1727 chn_abort(rdch); 1728 chn_resetbuf(rdch); 1729 rdch->flags |= CHN_F_NOTRIGGER; 1730 } 1731 CHN_UNLOCK(rdch); 1732 } 1733 if (wrch) { 1734 CHN_LOCK(wrch); 1735 wrch->flags &= ~CHN_F_NOTRIGGER; 1736 if (*arg_i & PCM_ENABLE_OUTPUT) 1737 chn_start(wrch, 1); 1738 else { 1739 chn_abort(wrch); 1740 chn_resetbuf(wrch); 1741 wrch->flags |= CHN_F_NOTRIGGER; 1742 } 1743 CHN_UNLOCK(wrch); 1744 } 1745 break; 1746 1747 case SNDCTL_DSP_GETTRIGGER: 1748 *arg_i = 0; 1749 if (wrch) { 1750 CHN_LOCK(wrch); 1751 if (wrch->flags & CHN_F_TRIGGERED) 1752 *arg_i |= PCM_ENABLE_OUTPUT; 1753 CHN_UNLOCK(wrch); 1754 } 1755 if (rdch) { 1756 CHN_LOCK(rdch); 1757 if (rdch->flags & CHN_F_TRIGGERED) 1758 *arg_i |= PCM_ENABLE_INPUT; 1759 CHN_UNLOCK(rdch); 1760 } 1761 break; 1762 1763 case SNDCTL_DSP_GETODELAY: 1764 if (wrch) { 1765 struct snd_dbuf *bs = wrch->bufsoft; 1766 1767 CHN_LOCK(wrch); 1768 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1769 *arg_i = sndbuf_getready(bs); 1770 CHN_UNLOCK(wrch); 1771 } else 1772 ret = EINVAL; 1773 break; 1774 1775 case SNDCTL_DSP_POST: 1776 if (wrch) { 1777 CHN_LOCK(wrch); 1778 wrch->flags &= ~CHN_F_NOTRIGGER; 1779 chn_start(wrch, 1); 1780 CHN_UNLOCK(wrch); 1781 } 1782 break; 1783 1784 case SNDCTL_DSP_SETDUPLEX: 1785 /* 1786 * switch to full-duplex mode if card is in half-duplex 1787 * mode and is able to work in full-duplex mode 1788 */ 1789 PCM_LOCK(d); 1790 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1791 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1792 PCM_UNLOCK(d); 1793 break; 1794 1795 /* 1796 * The following four ioctls are simple wrappers around mixer_ioctl 1797 * with no further processing. xcmd is short for "translated 1798 * command". 1799 */ 1800 case SNDCTL_DSP_GETRECVOL: 1801 if (xcmd == 0) { 1802 xcmd = SOUND_MIXER_READ_RECLEV; 1803 chn = rdch; 1804 } 1805 /* FALLTHROUGH */ 1806 case SNDCTL_DSP_SETRECVOL: 1807 if (xcmd == 0) { 1808 xcmd = SOUND_MIXER_WRITE_RECLEV; 1809 chn = rdch; 1810 } 1811 /* FALLTHROUGH */ 1812 case SNDCTL_DSP_GETPLAYVOL: 1813 if (xcmd == 0) { 1814 xcmd = SOUND_MIXER_READ_PCM; 1815 chn = wrch; 1816 } 1817 /* FALLTHROUGH */ 1818 case SNDCTL_DSP_SETPLAYVOL: 1819 if (xcmd == 0) { 1820 xcmd = SOUND_MIXER_WRITE_PCM; 1821 chn = wrch; 1822 } 1823 1824 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1825 if (ret != -1) { 1826 PCM_GIANT_EXIT(d); 1827 return (ret); 1828 } 1829 1830 if (d->mixer_dev != NULL) { 1831 PCM_ACQUIRE_QUICK(d); 1832 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1833 MIXER_CMD_DIRECT); 1834 PCM_RELEASE_QUICK(d); 1835 } else 1836 ret = ENOTSUP; 1837 1838 break; 1839 1840 case SNDCTL_DSP_GET_RECSRC_NAMES: 1841 case SNDCTL_DSP_GET_RECSRC: 1842 case SNDCTL_DSP_SET_RECSRC: 1843 if (d->mixer_dev != NULL) { 1844 PCM_ACQUIRE_QUICK(d); 1845 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1846 MIXER_CMD_DIRECT); 1847 PCM_RELEASE_QUICK(d); 1848 } else 1849 ret = ENOTSUP; 1850 break; 1851 1852 /* 1853 * The following 3 ioctls aren't very useful at the moment. For 1854 * now, only a single channel is associated with a cdev (/dev/dspN 1855 * instance), so there's only a single output routing to use (i.e., 1856 * the wrch bound to this cdev). 1857 */ 1858 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1859 { 1860 oss_mixer_enuminfo *ei; 1861 ei = (oss_mixer_enuminfo *)arg; 1862 ei->dev = 0; 1863 ei->ctrl = 0; 1864 ei->version = 0; /* static for now */ 1865 ei->strindex[0] = 0; 1866 1867 if (wrch != NULL) { 1868 ei->nvalues = 1; 1869 strlcpy(ei->strings, wrch->name, 1870 sizeof(ei->strings)); 1871 } else { 1872 ei->nvalues = 0; 1873 ei->strings[0] = '\0'; 1874 } 1875 } 1876 break; 1877 case SNDCTL_DSP_GET_PLAYTGT: 1878 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1879 /* 1880 * Re: SET_PLAYTGT 1881 * OSSv4: "The value that was accepted by the device will 1882 * be returned back in the variable pointed by the 1883 * argument." 1884 */ 1885 if (wrch != NULL) 1886 *arg_i = 0; 1887 else 1888 ret = EINVAL; 1889 break; 1890 1891 case SNDCTL_DSP_SILENCE: 1892 /* 1893 * Flush the software (pre-feed) buffer, but try to minimize playback 1894 * interruption. (I.e., record unplayed samples with intent to 1895 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1896 * functionality. 1897 */ 1898 if (wrch == NULL) 1899 ret = EINVAL; 1900 else { 1901 struct snd_dbuf *bs; 1902 CHN_LOCK(wrch); 1903 while (wrch->inprog != 0) 1904 cv_wait(&wrch->cv, wrch->lock); 1905 bs = wrch->bufsoft; 1906 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1907 bs->sl = sndbuf_getready(bs); 1908 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1909 sndbuf_fillsilence(bs); 1910 chn_start(wrch, 0); 1911 } 1912 CHN_UNLOCK(wrch); 1913 } 1914 break; 1915 1916 case SNDCTL_DSP_SKIP: 1917 /* 1918 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1919 * playback buffer by moving the current write position immediately 1920 * before the point where the device is currently reading the samples." 1921 */ 1922 if (wrch == NULL) 1923 ret = EINVAL; 1924 else { 1925 struct snd_dbuf *bs; 1926 CHN_LOCK(wrch); 1927 while (wrch->inprog != 0) 1928 cv_wait(&wrch->cv, wrch->lock); 1929 bs = wrch->bufsoft; 1930 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1931 sndbuf_softreset(bs); 1932 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1933 bs->sl = 0; 1934 chn_start(wrch, 0); 1935 } 1936 CHN_UNLOCK(wrch); 1937 } 1938 break; 1939 1940 case SNDCTL_DSP_CURRENT_OPTR: 1941 case SNDCTL_DSP_CURRENT_IPTR: 1942 /** 1943 * @note Changing formats resets the buffer counters, which differs 1944 * from the 4Front drivers. However, I don't expect this to be 1945 * much of a problem. 1946 * 1947 * @note In a test where @c CURRENT_OPTR is called immediately after write 1948 * returns, this driver is about 32K samples behind whereas 1949 * 4Front's is about 8K samples behind. Should determine source 1950 * of discrepancy, even if only out of curiosity. 1951 * 1952 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1953 */ 1954 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1955 if (chn == NULL) 1956 ret = EINVAL; 1957 else { 1958 struct snd_dbuf *bs; 1959 /* int tmp; */ 1960 1961 oss_count_t *oc = (oss_count_t *)arg; 1962 1963 CHN_LOCK(chn); 1964 bs = chn->bufsoft; 1965 #if 0 1966 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1967 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1968 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1969 #else 1970 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1971 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1972 #endif 1973 CHN_UNLOCK(chn); 1974 } 1975 break; 1976 1977 case SNDCTL_DSP_HALT_OUTPUT: 1978 case SNDCTL_DSP_HALT_INPUT: 1979 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1980 if (chn == NULL) 1981 ret = EINVAL; 1982 else { 1983 CHN_LOCK(chn); 1984 chn_abort(chn); 1985 CHN_UNLOCK(chn); 1986 } 1987 break; 1988 1989 case SNDCTL_DSP_LOW_WATER: 1990 /* 1991 * Set the number of bytes required to attract attention by 1992 * select/poll. 1993 */ 1994 if (wrch != NULL) { 1995 CHN_LOCK(wrch); 1996 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 1997 CHN_UNLOCK(wrch); 1998 } 1999 if (rdch != NULL) { 2000 CHN_LOCK(rdch); 2001 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2002 CHN_UNLOCK(rdch); 2003 } 2004 break; 2005 2006 case SNDCTL_DSP_GETERROR: 2007 /* 2008 * OSSv4 docs: "All errors and counters will automatically be 2009 * cleared to zeroes after the call so each call will return only 2010 * the errors that occurred after the previous invocation. ... The 2011 * play_underruns and rec_overrun fields are the only usefull fields 2012 * returned by OSS 4.0." 2013 */ 2014 { 2015 audio_errinfo *ei = (audio_errinfo *)arg; 2016 2017 bzero((void *)ei, sizeof(*ei)); 2018 2019 if (wrch != NULL) { 2020 CHN_LOCK(wrch); 2021 ei->play_underruns = wrch->xruns; 2022 wrch->xruns = 0; 2023 CHN_UNLOCK(wrch); 2024 } 2025 if (rdch != NULL) { 2026 CHN_LOCK(rdch); 2027 ei->rec_overruns = rdch->xruns; 2028 rdch->xruns = 0; 2029 CHN_UNLOCK(rdch); 2030 } 2031 } 2032 break; 2033 2034 case SNDCTL_DSP_SYNCGROUP: 2035 PCM_ACQUIRE_QUICK(d); 2036 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2037 PCM_RELEASE_QUICK(d); 2038 break; 2039 2040 case SNDCTL_DSP_SYNCSTART: 2041 PCM_ACQUIRE_QUICK(d); 2042 ret = dsp_oss_syncstart(*arg_i); 2043 PCM_RELEASE_QUICK(d); 2044 break; 2045 2046 case SNDCTL_DSP_POLICY: 2047 PCM_ACQUIRE_QUICK(d); 2048 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2049 PCM_RELEASE_QUICK(d); 2050 break; 2051 2052 case SNDCTL_DSP_COOKEDMODE: 2053 PCM_ACQUIRE_QUICK(d); 2054 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2055 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2056 PCM_RELEASE_QUICK(d); 2057 break; 2058 case SNDCTL_DSP_GET_CHNORDER: 2059 PCM_ACQUIRE_QUICK(d); 2060 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2061 PCM_RELEASE_QUICK(d); 2062 break; 2063 case SNDCTL_DSP_SET_CHNORDER: 2064 PCM_ACQUIRE_QUICK(d); 2065 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2066 PCM_RELEASE_QUICK(d); 2067 break; 2068 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2069 PCM_ACQUIRE_QUICK(d); 2070 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2071 PCM_RELEASE_QUICK(d); 2072 break; 2073 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2074 ret = EINVAL; 2075 break; 2076 #ifdef OSSV4_EXPERIMENT 2077 /* 2078 * XXX The following ioctls are not yet supported and just return 2079 * EINVAL. 2080 */ 2081 case SNDCTL_DSP_GETOPEAKS: 2082 case SNDCTL_DSP_GETIPEAKS: 2083 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2084 if (chn == NULL) 2085 ret = EINVAL; 2086 else { 2087 oss_peaks_t *op = (oss_peaks_t *)arg; 2088 int lpeak, rpeak; 2089 2090 CHN_LOCK(chn); 2091 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2092 if (ret == -1) 2093 ret = EINVAL; 2094 else { 2095 (*op)[0] = lpeak; 2096 (*op)[1] = rpeak; 2097 } 2098 CHN_UNLOCK(chn); 2099 } 2100 break; 2101 2102 /* 2103 * XXX Once implemented, revisit this for proper cv protection 2104 * (if necessary). 2105 */ 2106 case SNDCTL_GETLABEL: 2107 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2108 break; 2109 case SNDCTL_SETLABEL: 2110 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2111 break; 2112 case SNDCTL_GETSONG: 2113 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2114 break; 2115 case SNDCTL_SETSONG: 2116 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2117 break; 2118 case SNDCTL_SETNAME: 2119 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2120 break; 2121 #if 0 2122 /** 2123 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2124 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2125 * 4Front Technologies. 2126 */ 2127 case SNDCTL_DSP_READCTL: 2128 case SNDCTL_DSP_WRITECTL: 2129 ret = EINVAL; 2130 break; 2131 #endif /* !0 (explicitly omitted ioctls) */ 2132 2133 #endif /* !OSSV4_EXPERIMENT */ 2134 case SNDCTL_DSP_MAPINBUF: 2135 case SNDCTL_DSP_MAPOUTBUF: 2136 case SNDCTL_DSP_SETSYNCRO: 2137 /* undocumented */ 2138 2139 case SNDCTL_DSP_SUBDIVIDE: 2140 case SOUND_PCM_WRITE_FILTER: 2141 case SOUND_PCM_READ_FILTER: 2142 /* dunno what these do, don't sound important */ 2143 2144 default: 2145 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2146 ret = EINVAL; 2147 break; 2148 } 2149 2150 PCM_GIANT_LEAVE(d); 2151 2152 return (ret); 2153 } 2154 2155 static int 2156 dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2157 { 2158 struct snddev_info *d; 2159 struct pcm_channel *wrch, *rdch; 2160 int ret, e; 2161 2162 d = dsp_get_info(i_dev); 2163 if (!DSP_REGISTERED(d, i_dev)) 2164 return (EBADF); 2165 2166 PCM_GIANT_ENTER(d); 2167 2168 wrch = NULL; 2169 rdch = NULL; 2170 ret = 0; 2171 2172 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2173 2174 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2175 e = (events & (POLLOUT | POLLWRNORM)); 2176 if (e) 2177 ret |= chn_poll(wrch, e, td); 2178 } 2179 2180 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2181 e = (events & (POLLIN | POLLRDNORM)); 2182 if (e) 2183 ret |= chn_poll(rdch, e, td); 2184 } 2185 2186 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2187 2188 PCM_GIANT_LEAVE(d); 2189 2190 return (ret); 2191 } 2192 2193 static int 2194 dsp_mmap(struct cdev *i_dev, vm_ooffset_t offset, vm_paddr_t *paddr, 2195 int nprot, vm_memattr_t *memattr) 2196 { 2197 2198 /* XXX memattr is not honored */ 2199 *paddr = vtophys(offset); 2200 return (0); 2201 } 2202 2203 static int 2204 dsp_mmap_single(struct cdev *i_dev, vm_ooffset_t *offset, 2205 vm_size_t size, struct vm_object **object, int nprot) 2206 { 2207 struct snddev_info *d; 2208 struct pcm_channel *wrch, *rdch, *c; 2209 2210 /* 2211 * Reject PROT_EXEC by default. It just doesn't makes sense. 2212 * Unfortunately, we have to give up this one due to linux_mmap 2213 * changes. 2214 * 2215 * http://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2216 * 2217 */ 2218 #ifdef SV_ABI_LINUX 2219 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2220 (dsp_mmap_allow_prot_exec == 0 && 2221 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2222 #else 2223 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2224 #endif 2225 return (EINVAL); 2226 2227 /* 2228 * PROT_READ (alone) selects the input buffer. 2229 * PROT_WRITE (alone) selects the output buffer. 2230 * PROT_WRITE|PROT_READ together select the output buffer. 2231 */ 2232 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2233 return (EINVAL); 2234 2235 d = dsp_get_info(i_dev); 2236 if (!DSP_REGISTERED(d, i_dev)) 2237 return (EINVAL); 2238 2239 PCM_GIANT_ENTER(d); 2240 2241 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2242 2243 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2244 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2245 (*offset + size) > sndbuf_getsize(c->bufsoft) || 2246 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2247 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2248 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2249 PCM_GIANT_EXIT(d); 2250 return (EINVAL); 2251 } 2252 2253 if (wrch != NULL) 2254 wrch->flags |= CHN_F_MMAP; 2255 if (rdch != NULL) 2256 rdch->flags |= CHN_F_MMAP; 2257 2258 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2259 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2260 *object = vm_pager_allocate(OBJT_DEVICE, i_dev, 2261 size, nprot, *offset, curthread->td_ucred); 2262 2263 PCM_GIANT_LEAVE(d); 2264 2265 if (*object == NULL) 2266 return (EINVAL); 2267 return (0); 2268 } 2269 2270 /* So much for dev_stdclone() */ 2271 static int 2272 dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2273 { 2274 size_t len; 2275 2276 len = strlen(namep); 2277 2278 if (bcmp(name, namep, len) != 0) 2279 return (ENODEV); 2280 2281 name += len; 2282 2283 if (isdigit(*name) == 0) 2284 return (ENODEV); 2285 2286 len = strlen(sep); 2287 2288 if (*name == '0' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2289 return (ENODEV); 2290 2291 for (*u = 0; isdigit(*name) != 0; name++) { 2292 *u *= 10; 2293 *u += *name - '0'; 2294 if (*u > dsp_umax) 2295 return (ENODEV); 2296 } 2297 2298 if (*name == '\0') 2299 return ((use_sep == 0) ? 0 : ENODEV); 2300 2301 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2302 return (ENODEV); 2303 2304 name += len; 2305 2306 if (*name == '0' && name[1] != '\0') 2307 return (ENODEV); 2308 2309 for (*c = 0; isdigit(*name) != 0; name++) { 2310 *c *= 10; 2311 *c += *name - '0'; 2312 if (*c > dsp_cmax) 2313 return (ENODEV); 2314 } 2315 2316 if (*name != '\0') 2317 return (ENODEV); 2318 2319 return (0); 2320 } 2321 2322 static void 2323 dsp_clone(void *arg, 2324 #if __FreeBSD_version >= 600034 2325 struct ucred *cred, 2326 #endif 2327 char *name, int namelen, struct cdev **dev) 2328 { 2329 struct snddev_info *d; 2330 struct snd_clone_entry *ce; 2331 struct pcm_channel *c; 2332 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2333 char *devname, *devcmp, *devsep; 2334 2335 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2336 2337 if (*dev != NULL) 2338 return; 2339 2340 unit = -1; 2341 cunit = -1; 2342 devtype = -1; 2343 devhw = 0; 2344 devcmax = -1; 2345 tumax = -1; 2346 devname = NULL; 2347 devsep = NULL; 2348 2349 for (i = 0; unit == -1 && 2350 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2351 devtype = dsp_cdevs[i].type; 2352 devcmp = dsp_cdevs[i].name; 2353 devsep = dsp_cdevs[i].sep; 2354 devname = dsp_cdevs[i].alias; 2355 if (devname == NULL) 2356 devname = devcmp; 2357 devhw = dsp_cdevs[i].hw; 2358 devcmax = dsp_cdevs[i].max - 1; 2359 if (strcmp(name, devcmp) == 0) 2360 unit = snd_unit; 2361 else if (dsp_stdclone(name, devcmp, devsep, 2362 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2363 unit = -1; 2364 cunit = -1; 2365 } 2366 } 2367 2368 d = devclass_get_softc(pcm_devclass, unit); 2369 if (!PCM_REGISTERED(d) || d->clones == NULL) 2370 return; 2371 2372 /* XXX Need Giant magic entry ??? */ 2373 2374 PCM_LOCK(d); 2375 if (snd_clone_disabled(d->clones)) { 2376 PCM_UNLOCK(d); 2377 return; 2378 } 2379 2380 PCM_WAIT(d); 2381 PCM_ACQUIRE(d); 2382 PCM_UNLOCK(d); 2383 2384 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2385 2386 if (devhw != 0) { 2387 KASSERT(devcmax <= dsp_cmax, 2388 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2389 if (cunit > devcmax) { 2390 PCM_RELEASE_QUICK(d); 2391 return; 2392 } 2393 udcmask |= snd_c2unit(cunit); 2394 CHN_FOREACH(c, d, channels.pcm) { 2395 CHN_LOCK(c); 2396 if (c->unit != udcmask) { 2397 CHN_UNLOCK(c); 2398 continue; 2399 } 2400 CHN_UNLOCK(c); 2401 udcmask &= ~snd_c2unit(cunit); 2402 /* 2403 * Temporarily increase clone maxunit to overcome 2404 * vchan flexibility. 2405 * 2406 * # sysctl dev.pcm.0.play.vchans=256 2407 * dev.pcm.0.play.vchans: 1 -> 256 2408 * # cat /dev/zero > /dev/dsp0.vp255 & 2409 * [1] 17296 2410 * # sysctl dev.pcm.0.play.vchans=0 2411 * dev.pcm.0.play.vchans: 256 -> 1 2412 * # fg 2413 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2414 * ^C 2415 * # cat /dev/zero > /dev/dsp0.vp255 2416 * zsh: operation not supported: /dev/dsp0.vp255 2417 */ 2418 tumax = snd_clone_getmaxunit(d->clones); 2419 if (cunit > tumax) 2420 snd_clone_setmaxunit(d->clones, cunit); 2421 else 2422 tumax = -1; 2423 goto dsp_clone_alloc; 2424 } 2425 /* 2426 * Ok, so we're requesting unallocated vchan, but still 2427 * within maximum vchan limit. 2428 */ 2429 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2430 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2431 cunit < snd_maxautovchans) { 2432 udcmask &= ~snd_c2unit(cunit); 2433 tumax = snd_clone_getmaxunit(d->clones); 2434 if (cunit > tumax) 2435 snd_clone_setmaxunit(d->clones, cunit); 2436 else 2437 tumax = -1; 2438 goto dsp_clone_alloc; 2439 } 2440 PCM_RELEASE_QUICK(d); 2441 return; 2442 } 2443 2444 dsp_clone_alloc: 2445 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2446 if (tumax != -1) 2447 snd_clone_setmaxunit(d->clones, tumax); 2448 if (ce != NULL) { 2449 udcmask |= snd_c2unit(cunit); 2450 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2451 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2452 devname, unit, devsep, cunit); 2453 snd_clone_register(ce, *dev); 2454 } 2455 2456 PCM_RELEASE_QUICK(d); 2457 2458 if (*dev != NULL) 2459 dev_ref(*dev); 2460 } 2461 2462 static void 2463 dsp_sysinit(void *p) 2464 { 2465 if (dsp_ehtag != NULL) 2466 return; 2467 /* initialize unit numbering */ 2468 snd_unit_init(); 2469 dsp_umax = PCMMAXUNIT; 2470 dsp_cmax = PCMMAXCHAN; 2471 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2472 } 2473 2474 static void 2475 dsp_sysuninit(void *p) 2476 { 2477 if (dsp_ehtag == NULL) 2478 return; 2479 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2480 dsp_ehtag = NULL; 2481 } 2482 2483 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2484 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2485 2486 char * 2487 dsp_unit2name(char *buf, size_t len, int unit) 2488 { 2489 int i, dtype; 2490 2491 KASSERT(buf != NULL && len != 0, 2492 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2493 2494 dtype = snd_unit2d(unit); 2495 2496 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2497 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2498 continue; 2499 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2500 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2501 return (buf); 2502 } 2503 2504 return (NULL); 2505 } 2506 2507 /** 2508 * @brief Handler for SNDCTL_AUDIOINFO. 2509 * 2510 * Gathers information about the audio device specified in ai->dev. If 2511 * ai->dev == -1, then this function gathers information about the current 2512 * device. If the call comes in on a non-audio device and ai->dev == -1, 2513 * return EINVAL. 2514 * 2515 * This routine is supposed to go practically straight to the hardware, 2516 * getting capabilities directly from the sound card driver, side-stepping 2517 * the intermediate channel interface. 2518 * 2519 * Note, however, that the usefulness of this command is significantly 2520 * decreased when requesting info about any device other than the one serving 2521 * the request. While each snddev_channel refers to a specific device node, 2522 * the converse is *not* true. Currently, when a sound device node is opened, 2523 * the sound subsystem scans for an available audio channel (or channels, if 2524 * opened in read+write) and then assigns them to the si_drv[12] private 2525 * data fields. As a result, any information returned linking a channel to 2526 * a specific character device isn't necessarily accurate. 2527 * 2528 * @note 2529 * Calling threads must not hold any snddev_info or pcm_channel locks. 2530 * 2531 * @param dev device on which the ioctl was issued 2532 * @param ai ioctl request data container 2533 * 2534 * @retval 0 success 2535 * @retval EINVAL ai->dev specifies an invalid device 2536 * 2537 * @todo Verify correctness of Doxygen tags. ;) 2538 */ 2539 int 2540 dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2541 { 2542 struct pcmchan_caps *caps; 2543 struct pcm_channel *ch; 2544 struct snddev_info *d; 2545 uint32_t fmts; 2546 int i, nchan, *rates, minch, maxch; 2547 char *devname, buf[CHN_NAMELEN]; 2548 2549 /* 2550 * If probing the device that received the ioctl, make sure it's a 2551 * DSP device. (Users may use this ioctl with /dev/mixer and 2552 * /dev/midi.) 2553 */ 2554 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2555 return (EINVAL); 2556 2557 ch = NULL; 2558 devname = NULL; 2559 nchan = 0; 2560 bzero(buf, sizeof(buf)); 2561 2562 /* 2563 * Search for the requested audio device (channel). Start by 2564 * iterating over pcm devices. 2565 */ 2566 for (i = 0; pcm_devclass != NULL && 2567 i < devclass_get_maxunit(pcm_devclass); i++) { 2568 d = devclass_get_softc(pcm_devclass, i); 2569 if (!PCM_REGISTERED(d)) 2570 continue; 2571 2572 /* XXX Need Giant magic entry ??? */ 2573 2574 /* See the note in function docblock */ 2575 PCM_UNLOCKASSERT(d); 2576 PCM_LOCK(d); 2577 2578 CHN_FOREACH(ch, d, channels.pcm) { 2579 CHN_UNLOCKASSERT(ch); 2580 CHN_LOCK(ch); 2581 if (ai->dev == -1) { 2582 if (DSP_REGISTERED(d, i_dev) && 2583 (ch == PCM_RDCH(i_dev) || /* record ch */ 2584 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2585 devname = dsp_unit2name(buf, 2586 sizeof(buf), ch->unit); 2587 } 2588 } else if (ai->dev == nchan) { 2589 devname = dsp_unit2name(buf, sizeof(buf), 2590 ch->unit); 2591 } 2592 if (devname != NULL) 2593 break; 2594 CHN_UNLOCK(ch); 2595 ++nchan; 2596 } 2597 2598 if (devname != NULL) { 2599 /* 2600 * At this point, the following synchronization stuff 2601 * has happened: 2602 * - a specific PCM device is locked. 2603 * - a specific audio channel has been locked, so be 2604 * sure to unlock when exiting; 2605 */ 2606 2607 caps = chn_getcaps(ch); 2608 2609 /* 2610 * With all handles collected, zero out the user's 2611 * container and begin filling in its fields. 2612 */ 2613 bzero((void *)ai, sizeof(oss_audioinfo)); 2614 2615 ai->dev = nchan; 2616 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2617 2618 if ((ch->flags & CHN_F_BUSY) == 0) 2619 ai->busy = 0; 2620 else 2621 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2622 2623 /** 2624 * @note 2625 * @c cmd - OSSv4 docs: "Only supported under Linux at 2626 * this moment." Cop-out, I know, but I'll save 2627 * running around in the process table for later. 2628 * Is there a risk of leaking information? 2629 */ 2630 ai->pid = ch->pid; 2631 2632 /* 2633 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2634 * Note, however, that a single channel operates in 2635 * only one direction, so PCM_CAP_DUPLEX is out. 2636 */ 2637 /** 2638 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2639 * these in pcmchan::caps? 2640 */ 2641 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2642 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2643 2644 /* 2645 * Collect formats supported @b natively by the 2646 * device. Also determine min/max channels. (I.e., 2647 * mono, stereo, or both?) 2648 * 2649 * If any channel is stereo, maxch = 2; 2650 * if all channels are stereo, minch = 2, too; 2651 * if any channel is mono, minch = 1; 2652 * and if all channels are mono, maxch = 1. 2653 */ 2654 minch = 0; 2655 maxch = 0; 2656 fmts = 0; 2657 for (i = 0; caps->fmtlist[i]; i++) { 2658 fmts |= caps->fmtlist[i]; 2659 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2660 minch = (minch == 0) ? 2 : minch; 2661 maxch = 2; 2662 } else { 2663 minch = 1; 2664 maxch = (maxch == 0) ? 1 : maxch; 2665 } 2666 } 2667 2668 if (ch->direction == PCMDIR_PLAY) 2669 ai->oformats = fmts; 2670 else 2671 ai->iformats = fmts; 2672 2673 /** 2674 * @note 2675 * @c magic - OSSv4 docs: "Reserved for internal use 2676 * by OSS." 2677 * 2678 * @par 2679 * @c card_number - OSSv4 docs: "Number of the sound 2680 * card where this device belongs or -1 if this 2681 * information is not available. Applications 2682 * should normally not use this field for any 2683 * purpose." 2684 */ 2685 ai->card_number = -1; 2686 /** 2687 * @todo @c song_name - depends first on 2688 * SNDCTL_[GS]ETSONG @todo @c label - depends 2689 * on SNDCTL_[GS]ETLABEL 2690 * @todo @c port_number - routing information? 2691 */ 2692 ai->port_number = -1; 2693 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2694 /** 2695 * @note 2696 * @c real_device - OSSv4 docs: "Obsolete." 2697 */ 2698 ai->real_device = -1; 2699 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2700 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2701 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2702 /** 2703 * @note 2704 * @c flags - OSSv4 docs: "Reserved for future use." 2705 * 2706 * @note 2707 * @c binding - OSSv4 docs: "Reserved for future use." 2708 * 2709 * @todo @c handle - haven't decided how to generate 2710 * this yet; bus, vendor, device IDs? 2711 */ 2712 ai->min_rate = caps->minspeed; 2713 ai->max_rate = caps->maxspeed; 2714 2715 ai->min_channels = minch; 2716 ai->max_channels = maxch; 2717 2718 ai->nrates = chn_getrates(ch, &rates); 2719 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2720 ai->nrates = OSS_MAX_SAMPLE_RATES; 2721 2722 for (i = 0; i < ai->nrates; i++) 2723 ai->rates[i] = rates[i]; 2724 2725 ai->next_play_engine = 0; 2726 ai->next_rec_engine = 0; 2727 2728 CHN_UNLOCK(ch); 2729 } 2730 2731 PCM_UNLOCK(d); 2732 2733 if (devname != NULL) 2734 return (0); 2735 } 2736 2737 /* Exhausted the search -- nothing is locked, so return. */ 2738 return (EINVAL); 2739 } 2740 2741 /** 2742 * @brief Assigns a PCM channel to a sync group. 2743 * 2744 * Sync groups are used to enable audio operations on multiple devices 2745 * simultaneously. They may be used with any number of devices and may 2746 * span across applications. Devices are added to groups with 2747 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2748 * SNDCTL_DSP_SYNCSTART ioctl. 2749 * 2750 * If the @c id field of the @c group parameter is set to zero, then a new 2751 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2752 * the group specified. 2753 * 2754 * @todo As far as memory allocation, should we assume that things are 2755 * okay and allocate with M_WAITOK before acquiring channel locks, 2756 * freeing later if not? 2757 * 2758 * @param wrch output channel associated w/ device (if any) 2759 * @param rdch input channel associated w/ device (if any) 2760 * @param group Sync group parameters 2761 * 2762 * @retval 0 success 2763 * @retval non-zero error to be propagated upstream 2764 */ 2765 static int 2766 dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2767 { 2768 struct pcmchan_syncmember *smrd, *smwr; 2769 struct pcmchan_syncgroup *sg; 2770 int ret, sg_ids[3]; 2771 2772 smrd = NULL; 2773 smwr = NULL; 2774 sg = NULL; 2775 ret = 0; 2776 2777 /* 2778 * Free_unr() may sleep, so store released syncgroup IDs until after 2779 * all locks are released. 2780 */ 2781 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2782 2783 PCM_SG_LOCK(); 2784 2785 /* 2786 * - Insert channel(s) into group's member list. 2787 * - Set CHN_F_NOTRIGGER on channel(s). 2788 * - Stop channel(s). 2789 */ 2790 2791 /* 2792 * If device's channels are already mapped to a group, unmap them. 2793 */ 2794 if (wrch) { 2795 CHN_LOCK(wrch); 2796 sg_ids[0] = chn_syncdestroy(wrch); 2797 } 2798 2799 if (rdch) { 2800 CHN_LOCK(rdch); 2801 sg_ids[1] = chn_syncdestroy(rdch); 2802 } 2803 2804 /* 2805 * Verify that mode matches character device properites. 2806 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2807 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2808 */ 2809 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2810 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2811 ret = EINVAL; 2812 goto out; 2813 } 2814 2815 /* 2816 * An id of zero indicates the user wants to create a new 2817 * syncgroup. 2818 */ 2819 if (group->id == 0) { 2820 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2821 if (sg != NULL) { 2822 SLIST_INIT(&sg->members); 2823 sg->id = alloc_unr(pcmsg_unrhdr); 2824 2825 group->id = sg->id; 2826 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2827 } else 2828 ret = ENOMEM; 2829 } else { 2830 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2831 if (sg->id == group->id) 2832 break; 2833 } 2834 if (sg == NULL) 2835 ret = EINVAL; 2836 } 2837 2838 /* Couldn't create or find a syncgroup. Fail. */ 2839 if (sg == NULL) 2840 goto out; 2841 2842 /* 2843 * Allocate a syncmember, assign it and a channel together, and 2844 * insert into syncgroup. 2845 */ 2846 if (group->mode & PCM_ENABLE_INPUT) { 2847 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2848 if (smrd == NULL) { 2849 ret = ENOMEM; 2850 goto out; 2851 } 2852 2853 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2854 smrd->parent = sg; 2855 smrd->ch = rdch; 2856 2857 chn_abort(rdch); 2858 rdch->flags |= CHN_F_NOTRIGGER; 2859 rdch->sm = smrd; 2860 } 2861 2862 if (group->mode & PCM_ENABLE_OUTPUT) { 2863 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2864 if (smwr == NULL) { 2865 ret = ENOMEM; 2866 goto out; 2867 } 2868 2869 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2870 smwr->parent = sg; 2871 smwr->ch = wrch; 2872 2873 chn_abort(wrch); 2874 wrch->flags |= CHN_F_NOTRIGGER; 2875 wrch->sm = smwr; 2876 } 2877 2878 2879 out: 2880 if (ret != 0) { 2881 if (smrd != NULL) 2882 free(smrd, M_DEVBUF); 2883 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2884 sg_ids[2] = sg->id; 2885 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2886 free(sg, M_DEVBUF); 2887 } 2888 2889 if (wrch) 2890 wrch->sm = NULL; 2891 if (rdch) 2892 rdch->sm = NULL; 2893 } 2894 2895 if (wrch) 2896 CHN_UNLOCK(wrch); 2897 if (rdch) 2898 CHN_UNLOCK(rdch); 2899 2900 PCM_SG_UNLOCK(); 2901 2902 if (sg_ids[0]) 2903 free_unr(pcmsg_unrhdr, sg_ids[0]); 2904 if (sg_ids[1]) 2905 free_unr(pcmsg_unrhdr, sg_ids[1]); 2906 if (sg_ids[2]) 2907 free_unr(pcmsg_unrhdr, sg_ids[2]); 2908 2909 return (ret); 2910 } 2911 2912 /** 2913 * @brief Launch a sync group into action 2914 * 2915 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2916 * iterates over all members, triggering them along the way. 2917 * 2918 * @note Caller must not hold any channel locks. 2919 * 2920 * @param sg_id sync group identifier 2921 * 2922 * @retval 0 success 2923 * @retval non-zero error worthy of propagating upstream to user 2924 */ 2925 static int 2926 dsp_oss_syncstart(int sg_id) 2927 { 2928 struct pcmchan_syncmember *sm, *sm_tmp; 2929 struct pcmchan_syncgroup *sg; 2930 struct pcm_channel *c; 2931 int ret, needlocks; 2932 2933 /* Get the synclists lock */ 2934 PCM_SG_LOCK(); 2935 2936 do { 2937 ret = 0; 2938 needlocks = 0; 2939 2940 /* Search for syncgroup by ID */ 2941 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2942 if (sg->id == sg_id) 2943 break; 2944 } 2945 2946 /* Return EINVAL if not found */ 2947 if (sg == NULL) { 2948 ret = EINVAL; 2949 break; 2950 } 2951 2952 /* Any removals resulting in an empty group should've handled this */ 2953 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2954 2955 /* 2956 * Attempt to lock all member channels - if any are already 2957 * locked, unlock those acquired, sleep for a bit, and try 2958 * again. 2959 */ 2960 SLIST_FOREACH(sm, &sg->members, link) { 2961 if (CHN_TRYLOCK(sm->ch) == 0) { 2962 int timo = hz * 5/1000; 2963 if (timo < 1) 2964 timo = 1; 2965 2966 /* Release all locked channels so far, retry */ 2967 SLIST_FOREACH(sm_tmp, &sg->members, link) { 2968 /* sm is the member already locked */ 2969 if (sm == sm_tmp) 2970 break; 2971 CHN_UNLOCK(sm_tmp->ch); 2972 } 2973 2974 /** @todo Is PRIBIO correct/ */ 2975 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 2976 PRIBIO | PCATCH, "pcmsg", timo); 2977 if (ret == EINTR || ret == ERESTART) 2978 break; 2979 2980 needlocks = 1; 2981 ret = 0; /* Assumes ret == EAGAIN... */ 2982 } 2983 } 2984 } while (needlocks && ret == 0); 2985 2986 /* Proceed only if no errors encountered. */ 2987 if (ret == 0) { 2988 /* Launch channels */ 2989 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 2990 SLIST_REMOVE_HEAD(&sg->members, link); 2991 2992 c = sm->ch; 2993 c->sm = NULL; 2994 chn_start(c, 1); 2995 c->flags &= ~CHN_F_NOTRIGGER; 2996 CHN_UNLOCK(c); 2997 2998 free(sm, M_DEVBUF); 2999 } 3000 3001 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3002 free(sg, M_DEVBUF); 3003 } 3004 3005 PCM_SG_UNLOCK(); 3006 3007 /* 3008 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3009 * first. 3010 */ 3011 if (ret == 0) 3012 free_unr(pcmsg_unrhdr, sg_id); 3013 3014 return (ret); 3015 } 3016 3017 /** 3018 * @brief Handler for SNDCTL_DSP_POLICY 3019 * 3020 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3021 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3022 * specifying those two parameters, s/he simply selects a number from 0..10 3023 * which corresponds to a buffer size. Smaller numbers request smaller 3024 * buffers with lower latencies (at greater overhead from more frequent 3025 * interrupts), while greater numbers behave in the opposite manner. 3026 * 3027 * The 4Front spec states that a value of 5 should be the default. However, 3028 * this implementation deviates slightly by using a linear scale without 3029 * consulting drivers. I.e., even though drivers may have different default 3030 * buffer sizes, a policy argument of 5 will have the same result across 3031 * all drivers. 3032 * 3033 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3034 * more information. 3035 * 3036 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3037 * work with hardware drivers directly. 3038 * 3039 * @note PCM channel arguments must not be locked by caller. 3040 * 3041 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3042 * @param rdch " recording channel (optional; may be NULL) 3043 * @param policy Integer from [0:10] 3044 * 3045 * @retval 0 constant (for now) 3046 */ 3047 static int 3048 dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3049 { 3050 int ret; 3051 3052 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3053 return (EIO); 3054 3055 /* Default: success */ 3056 ret = 0; 3057 3058 if (rdch) { 3059 CHN_LOCK(rdch); 3060 ret = chn_setlatency(rdch, policy); 3061 CHN_UNLOCK(rdch); 3062 } 3063 3064 if (wrch && ret == 0) { 3065 CHN_LOCK(wrch); 3066 ret = chn_setlatency(wrch, policy); 3067 CHN_UNLOCK(wrch); 3068 } 3069 3070 if (ret) 3071 ret = EIO; 3072 3073 return (ret); 3074 } 3075 3076 /** 3077 * @brief Enable or disable "cooked" mode 3078 * 3079 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3080 * is the default, the sound system handles rate and format conversions 3081 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3082 * operates with 44100Hz/16bit/signed samples). 3083 * 3084 * Disabling cooked mode is intended for applications wanting to mmap() 3085 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3086 * feeder architecture, presumably to gain as much control over audio 3087 * hardware as possible. 3088 * 3089 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3090 * for more details. 3091 * 3092 * @param wrch playback channel (optional; may be NULL) 3093 * @param rdch recording channel (optional; may be NULL) 3094 * @param enabled 0 = raw mode, 1 = cooked mode 3095 * 3096 * @retval EINVAL Operation not yet supported. 3097 */ 3098 static int 3099 dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3100 { 3101 3102 /* 3103 * XXX I just don't get it. Why don't they call it 3104 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3105 * This is just plain so confusing, incoherent, 3106 * <insert any non-printable characters here>. 3107 */ 3108 if (!(enabled == 1 || enabled == 0)) 3109 return (EINVAL); 3110 3111 /* 3112 * I won't give in. I'm inverting its logic here and now. 3113 * Brag all you want, but "BITPERFECT" should be the better 3114 * term here. 3115 */ 3116 enabled ^= 0x00000001; 3117 3118 if (wrch != NULL) { 3119 CHN_LOCK(wrch); 3120 wrch->flags &= ~CHN_F_BITPERFECT; 3121 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3122 CHN_UNLOCK(wrch); 3123 } 3124 3125 if (rdch != NULL) { 3126 CHN_LOCK(rdch); 3127 rdch->flags &= ~CHN_F_BITPERFECT; 3128 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3129 CHN_UNLOCK(rdch); 3130 } 3131 3132 return (0); 3133 } 3134 3135 /** 3136 * @brief Retrieve channel interleaving order 3137 * 3138 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3139 * 3140 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3141 * for more details. 3142 * 3143 * @note As the ioctl definition is still under construction, FreeBSD 3144 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3145 * 3146 * @param wrch playback channel (optional; may be NULL) 3147 * @param rdch recording channel (optional; may be NULL) 3148 * @param map channel map (result will be stored there) 3149 * 3150 * @retval EINVAL Operation not yet supported. 3151 */ 3152 static int 3153 dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3154 { 3155 struct pcm_channel *ch; 3156 int ret; 3157 3158 ch = (wrch != NULL) ? wrch : rdch; 3159 if (ch != NULL) { 3160 CHN_LOCK(ch); 3161 ret = chn_oss_getorder(ch, map); 3162 CHN_UNLOCK(ch); 3163 } else 3164 ret = EINVAL; 3165 3166 return (ret); 3167 } 3168 3169 /** 3170 * @brief Specify channel interleaving order 3171 * 3172 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3173 * 3174 * @note As the ioctl definition is still under construction, FreeBSD 3175 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3176 * 3177 * @param wrch playback channel (optional; may be NULL) 3178 * @param rdch recording channel (optional; may be NULL) 3179 * @param map channel map 3180 * 3181 * @retval EINVAL Operation not yet supported. 3182 */ 3183 static int 3184 dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3185 { 3186 int ret; 3187 3188 ret = 0; 3189 3190 if (wrch != NULL) { 3191 CHN_LOCK(wrch); 3192 ret = chn_oss_setorder(wrch, map); 3193 CHN_UNLOCK(wrch); 3194 } 3195 3196 if (ret == 0 && rdch != NULL) { 3197 CHN_LOCK(rdch); 3198 ret = chn_oss_setorder(rdch, map); 3199 CHN_UNLOCK(rdch); 3200 } 3201 3202 return (ret); 3203 } 3204 3205 static int 3206 dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3207 int *mask) 3208 { 3209 struct pcm_channel *ch; 3210 uint32_t chnmask; 3211 int ret; 3212 3213 chnmask = 0; 3214 ch = (wrch != NULL) ? wrch : rdch; 3215 3216 if (ch != NULL) { 3217 CHN_LOCK(ch); 3218 ret = chn_oss_getmask(ch, &chnmask); 3219 CHN_UNLOCK(ch); 3220 } else 3221 ret = EINVAL; 3222 3223 if (ret == 0) 3224 *mask = chnmask; 3225 3226 return (ret); 3227 } 3228 3229 #ifdef OSSV4_EXPERIMENT 3230 /** 3231 * @brief Retrieve an audio device's label 3232 * 3233 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3234 * 3235 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3236 * for more details. 3237 * 3238 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3239 * consoles) can show variable "labels" for certain controls. By default 3240 * the application name (say quake) is shown as the label but 3241 * applications may change the labels themselves." 3242 * 3243 * @note As the ioctl definition is still under construction, FreeBSD 3244 * does not currently support @c SNDCTL_GETLABEL. 3245 * 3246 * @param wrch playback channel (optional; may be NULL) 3247 * @param rdch recording channel (optional; may be NULL) 3248 * @param label label gets copied here 3249 * 3250 * @retval EINVAL Operation not yet supported. 3251 */ 3252 static int 3253 dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3254 { 3255 return (EINVAL); 3256 } 3257 3258 /** 3259 * @brief Specify an audio device's label 3260 * 3261 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3262 * comments for @c dsp_oss_getlabel immediately above. 3263 * 3264 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3265 * for more details. 3266 * 3267 * @note As the ioctl definition is still under construction, FreeBSD 3268 * does not currently support SNDCTL_SETLABEL. 3269 * 3270 * @param wrch playback channel (optional; may be NULL) 3271 * @param rdch recording channel (optional; may be NULL) 3272 * @param label label gets copied from here 3273 * 3274 * @retval EINVAL Operation not yet supported. 3275 */ 3276 static int 3277 dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3278 { 3279 return (EINVAL); 3280 } 3281 3282 /** 3283 * @brief Retrieve name of currently played song 3284 * 3285 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3286 * tell the system the name of the currently playing song, which would be 3287 * visible in @c /dev/sndstat. 3288 * 3289 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3290 * for more details. 3291 * 3292 * @note As the ioctl definition is still under construction, FreeBSD 3293 * does not currently support SNDCTL_GETSONG. 3294 * 3295 * @param wrch playback channel (optional; may be NULL) 3296 * @param rdch recording channel (optional; may be NULL) 3297 * @param song song name gets copied here 3298 * 3299 * @retval EINVAL Operation not yet supported. 3300 */ 3301 static int 3302 dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3303 { 3304 return (EINVAL); 3305 } 3306 3307 /** 3308 * @brief Retrieve name of currently played song 3309 * 3310 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3311 * tell the system the name of the currently playing song, which would be 3312 * visible in @c /dev/sndstat. 3313 * 3314 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3315 * for more details. 3316 * 3317 * @note As the ioctl definition is still under construction, FreeBSD 3318 * does not currently support SNDCTL_SETSONG. 3319 * 3320 * @param wrch playback channel (optional; may be NULL) 3321 * @param rdch recording channel (optional; may be NULL) 3322 * @param song song name gets copied from here 3323 * 3324 * @retval EINVAL Operation not yet supported. 3325 */ 3326 static int 3327 dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3328 { 3329 return (EINVAL); 3330 } 3331 3332 /** 3333 * @brief Rename a device 3334 * 3335 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3336 * 3337 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3338 * more details. 3339 * 3340 * From Hannu@4Front: "This call is used to change the device name 3341 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3342 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3343 * name depending on the current context (for example 'OSS virtual wave table 3344 * synth' or 'VoIP link to London')." 3345 * 3346 * @note As the ioctl definition is still under construction, FreeBSD 3347 * does not currently support SNDCTL_SETNAME. 3348 * 3349 * @param wrch playback channel (optional; may be NULL) 3350 * @param rdch recording channel (optional; may be NULL) 3351 * @param name new device name gets copied from here 3352 * 3353 * @retval EINVAL Operation not yet supported. 3354 */ 3355 static int 3356 dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3357 { 3358 return (EINVAL); 3359 } 3360 #endif /* !OSSV4_EXPERIMENT */ 3361