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/lock.h> 36#include <sys/rwlock.h> 37#include <sys/sysent.h> 38 39#include <vm/vm.h> 40#include <vm/vm_object.h> 41#include <vm/vm_page.h> 42#include <vm/vm_pager.h> 43 44SND_DECLARE_FILE("$FreeBSD$"); 45 46static int dsp_mmap_allow_prot_exec = 0; 47SYSCTL_INT(_hw_snd, OID_AUTO, compat_linux_mmap, CTLFLAG_RW, 48 &dsp_mmap_allow_prot_exec, 0, 49 "linux mmap compatibility (-1=force disable 0=auto 1=force enable)"); 50 51struct dsp_cdevinfo { 52 struct pcm_channel *rdch, *wrch; 53 struct pcm_channel *volch; 54 int busy, simplex; 55 TAILQ_ENTRY(dsp_cdevinfo) link; 56}; 57 58#define PCM_RDCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->rdch) 59#define PCM_WRCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->wrch) 60#define PCM_VOLCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->volch) 61#define PCM_SIMPLEX(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->simplex) 62 63#define DSP_CDEVINFO_CACHESIZE 8 64 65#define DSP_REGISTERED(x, y) (PCM_REGISTERED(x) && \ 66 (y) != NULL && (y)->si_drv1 != NULL) 67 68#define OLDPCM_IOCTL 69 70static d_open_t dsp_open; 71static d_close_t dsp_close; 72static d_read_t dsp_read; 73static d_write_t dsp_write; 74static d_ioctl_t dsp_ioctl; 75static d_poll_t dsp_poll; 76static d_mmap_t dsp_mmap; 77static d_mmap_single_t dsp_mmap_single; 78 79struct cdevsw dsp_cdevsw = { 80 .d_version = D_VERSION, 81 .d_open = dsp_open, 82 .d_close = dsp_close, 83 .d_read = dsp_read, 84 .d_write = dsp_write, 85 .d_ioctl = dsp_ioctl, 86 .d_poll = dsp_poll, 87 .d_mmap = dsp_mmap, 88 .d_mmap_single = dsp_mmap_single, 89 .d_name = "dsp", 90}; 91 92static eventhandler_tag dsp_ehtag = NULL; 93static int dsp_umax = -1; 94static int dsp_cmax = -1; 95 96static int dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group); 97static int dsp_oss_syncstart(int sg_id); 98static int dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy); 99static int dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled); 100static int dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 101static int dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 102static int dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, int *mask); 103#ifdef OSSV4_EXPERIMENT 104static int dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 105static int dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 106static int dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 107static int dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 108static int dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name); 109#endif 110 111static struct snddev_info * 112dsp_get_info(struct cdev *dev) 113{ 114 return (devclass_get_softc(pcm_devclass, PCMUNIT(dev))); 115} 116 117static uint32_t 118dsp_get_flags(struct cdev *dev) 119{ 120 device_t bdev; 121 122 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 123 124 return ((bdev != NULL) ? pcm_getflags(bdev) : 0xffffffff); 125} 126 127static void 128dsp_set_flags(struct cdev *dev, uint32_t flags) 129{ 130 device_t bdev; 131 132 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 133 134 if (bdev != NULL) 135 pcm_setflags(bdev, flags); 136} 137 138/* 139 * return the channels associated with an open device instance. 140 * lock channels specified. 141 */ 142static int 143getchns(struct cdev *dev, struct pcm_channel **rdch, struct pcm_channel **wrch, 144 uint32_t prio) 145{ 146 struct snddev_info *d; 147 struct pcm_channel *ch; 148 uint32_t flags; 149 150 if (PCM_SIMPLEX(dev) != 0) { 151 d = dsp_get_info(dev); 152 if (!PCM_REGISTERED(d)) 153 return (ENXIO); 154 PCM_LOCK(d); 155 PCM_WAIT(d); 156 PCM_ACQUIRE(d); 157 /* 158 * Note: order is important - 159 * pcm flags -> prio query flags -> wild guess 160 */ 161 ch = NULL; 162 flags = dsp_get_flags(dev); 163 if (flags & SD_F_PRIO_WR) { 164 ch = PCM_RDCH(dev); 165 PCM_RDCH(dev) = NULL; 166 } else if (flags & SD_F_PRIO_RD) { 167 ch = PCM_WRCH(dev); 168 PCM_WRCH(dev) = NULL; 169 } else if (prio & SD_F_PRIO_WR) { 170 ch = PCM_RDCH(dev); 171 PCM_RDCH(dev) = NULL; 172 flags |= SD_F_PRIO_WR; 173 } else if (prio & SD_F_PRIO_RD) { 174 ch = PCM_WRCH(dev); 175 PCM_WRCH(dev) = NULL; 176 flags |= SD_F_PRIO_RD; 177 } else if (PCM_WRCH(dev) != NULL) { 178 ch = PCM_RDCH(dev); 179 PCM_RDCH(dev) = NULL; 180 flags |= SD_F_PRIO_WR; 181 } else if (PCM_RDCH(dev) != NULL) { 182 ch = PCM_WRCH(dev); 183 PCM_WRCH(dev) = NULL; 184 flags |= SD_F_PRIO_RD; 185 } 186 PCM_SIMPLEX(dev) = 0; 187 dsp_set_flags(dev, flags); 188 if (ch != NULL) { 189 CHN_LOCK(ch); 190 pcm_chnref(ch, -1); 191 pcm_chnrelease(ch); 192 } 193 PCM_RELEASE(d); 194 PCM_UNLOCK(d); 195 } 196 197 *rdch = PCM_RDCH(dev); 198 *wrch = PCM_WRCH(dev); 199 200 if (*rdch != NULL && (prio & SD_F_PRIO_RD)) 201 CHN_LOCK(*rdch); 202 if (*wrch != NULL && (prio & SD_F_PRIO_WR)) 203 CHN_LOCK(*wrch); 204 205 return (0); 206} 207 208/* unlock specified channels */ 209static void 210relchns(struct cdev *dev, struct pcm_channel *rdch, struct pcm_channel *wrch, 211 uint32_t prio) 212{ 213 if (wrch != NULL && (prio & SD_F_PRIO_WR)) 214 CHN_UNLOCK(wrch); 215 if (rdch != NULL && (prio & SD_F_PRIO_RD)) 216 CHN_UNLOCK(rdch); 217} 218 219static void 220dsp_cdevinfo_alloc(struct cdev *dev, 221 struct pcm_channel *rdch, struct pcm_channel *wrch, 222 struct pcm_channel *volch) 223{ 224 struct snddev_info *d; 225 struct dsp_cdevinfo *cdi; 226 int simplex; 227 228 d = dsp_get_info(dev); 229 230 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 == NULL && 231 ((rdch == NULL && wrch == NULL) || rdch != wrch), 232 ("bogus %s(), what are you trying to accomplish here?", __func__)); 233 PCM_BUSYASSERT(d); 234 PCM_LOCKASSERT(d); 235 236 simplex = (dsp_get_flags(dev) & SD_F_SIMPLEX) ? 1 : 0; 237 238 /* 239 * Scan for free instance entry and put it into the end of list. 240 * Create new one if necessary. 241 */ 242 TAILQ_FOREACH(cdi, &d->dsp_cdevinfo_pool, link) { 243 if (cdi->busy != 0) 244 break; 245 cdi->rdch = rdch; 246 cdi->wrch = wrch; 247 cdi->volch = volch; 248 cdi->simplex = simplex; 249 cdi->busy = 1; 250 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 251 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 252 dev->si_drv1 = cdi; 253 return; 254 } 255 PCM_UNLOCK(d); 256 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 257 PCM_LOCK(d); 258 cdi->rdch = rdch; 259 cdi->wrch = wrch; 260 cdi->volch = volch; 261 cdi->simplex = simplex; 262 cdi->busy = 1; 263 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 264 dev->si_drv1 = cdi; 265} 266 267static void 268dsp_cdevinfo_free(struct cdev *dev) 269{ 270 struct snddev_info *d; 271 struct dsp_cdevinfo *cdi, *tmp; 272 uint32_t flags; 273 int i; 274 275 d = dsp_get_info(dev); 276 277 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 != NULL && 278 PCM_RDCH(dev) == NULL && PCM_WRCH(dev) == NULL && 279 PCM_VOLCH(dev) == NULL, 280 ("bogus %s(), what are you trying to accomplish here?", __func__)); 281 PCM_BUSYASSERT(d); 282 PCM_LOCKASSERT(d); 283 284 cdi = dev->si_drv1; 285 dev->si_drv1 = NULL; 286 cdi->rdch = NULL; 287 cdi->wrch = NULL; 288 cdi->volch = NULL; 289 cdi->simplex = 0; 290 cdi->busy = 0; 291 292 /* 293 * Once it is free, move it back to the beginning of list for 294 * faster new entry allocation. 295 */ 296 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 297 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 298 299 /* 300 * Scan the list, cache free entries up to DSP_CDEVINFO_CACHESIZE. 301 * Reset simplex flags. 302 */ 303 flags = dsp_get_flags(dev) & ~SD_F_PRIO_SET; 304 i = DSP_CDEVINFO_CACHESIZE; 305 TAILQ_FOREACH_SAFE(cdi, &d->dsp_cdevinfo_pool, link, tmp) { 306 if (cdi->busy != 0) { 307 if (cdi->simplex == 0) { 308 if (cdi->rdch != NULL) 309 flags |= SD_F_PRIO_RD; 310 if (cdi->wrch != NULL) 311 flags |= SD_F_PRIO_WR; 312 } 313 } else { 314 if (i == 0) { 315 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 316 free(cdi, M_DEVBUF); 317 } else 318 i--; 319 } 320 } 321 dsp_set_flags(dev, flags); 322} 323 324void 325dsp_cdevinfo_init(struct snddev_info *d) 326{ 327 struct dsp_cdevinfo *cdi; 328 int i; 329 330 KASSERT(d != NULL, ("NULL snddev_info")); 331 PCM_BUSYASSERT(d); 332 PCM_UNLOCKASSERT(d); 333 334 TAILQ_INIT(&d->dsp_cdevinfo_pool); 335 for (i = 0; i < DSP_CDEVINFO_CACHESIZE; i++) { 336 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 337 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 338 } 339} 340 341void 342dsp_cdevinfo_flush(struct snddev_info *d) 343{ 344 struct dsp_cdevinfo *cdi, *tmp; 345 346 KASSERT(d != NULL, ("NULL snddev_info")); 347 PCM_BUSYASSERT(d); 348 PCM_UNLOCKASSERT(d); 349 350 cdi = TAILQ_FIRST(&d->dsp_cdevinfo_pool); 351 while (cdi != NULL) { 352 tmp = TAILQ_NEXT(cdi, link); 353 free(cdi, M_DEVBUF); 354 cdi = tmp; 355 } 356 TAILQ_INIT(&d->dsp_cdevinfo_pool); 357} 358 359/* duplex / simplex cdev type */ 360enum { 361 DSP_CDEV_TYPE_RDONLY, /* simplex read-only (record) */ 362 DSP_CDEV_TYPE_WRONLY, /* simplex write-only (play) */ 363 DSP_CDEV_TYPE_RDWR /* duplex read, write, or both */ 364}; 365 366enum { 367 DSP_CDEV_VOLCTL_NONE, 368 DSP_CDEV_VOLCTL_READ, 369 DSP_CDEV_VOLCTL_WRITE 370}; 371 372#define DSP_F_VALID(x) ((x) & (FREAD | FWRITE)) 373#define DSP_F_DUPLEX(x) (((x) & (FREAD | FWRITE)) == (FREAD | FWRITE)) 374#define DSP_F_SIMPLEX(x) (!DSP_F_DUPLEX(x)) 375#define DSP_F_READ(x) ((x) & FREAD) 376#define DSP_F_WRITE(x) ((x) & FWRITE) 377 378static const struct { 379 int type; 380 char *name; 381 char *sep; 382 char *alias; 383 int use_sep; 384 int hw; 385 int max; 386 int volctl; 387 uint32_t fmt, spd; 388 int query; 389} dsp_cdevs[] = { 390 { SND_DEV_DSP, "dsp", ".", NULL, 0, 0, 0, 0, 391 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 392 DSP_CDEV_TYPE_RDWR }, 393 { SND_DEV_AUDIO, "audio", ".", NULL, 0, 0, 0, 0, 394 SND_FORMAT(AFMT_MU_LAW, 1, 0), DSP_DEFAULT_SPEED, 395 DSP_CDEV_TYPE_RDWR }, 396 { SND_DEV_DSP16, "dspW", ".", NULL, 0, 0, 0, 0, 397 SND_FORMAT(AFMT_S16_LE, 1, 0), DSP_DEFAULT_SPEED, 398 DSP_CDEV_TYPE_RDWR }, 399 { SND_DEV_DSPHW_PLAY, "dsp", ".p", NULL, 1, 1, SND_MAXHWCHAN, 1, 400 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 401 { SND_DEV_DSPHW_VPLAY, "dsp", ".vp", NULL, 1, 1, SND_MAXVCHANS, 1, 402 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 403 { SND_DEV_DSPHW_REC, "dsp", ".r", NULL, 1, 1, SND_MAXHWCHAN, 1, 404 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 405 { SND_DEV_DSPHW_VREC, "dsp", ".vr", NULL, 1, 1, SND_MAXVCHANS, 1, 406 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 407 { SND_DEV_DSPHW_CD, "dspcd", ".", NULL, 0, 0, 0, 0, 408 SND_FORMAT(AFMT_S16_LE, 2, 0), 44100, DSP_CDEV_TYPE_RDWR }, 409 /* Low priority, OSSv4 aliases. */ 410 { SND_DEV_DSP, "dsp_ac3", ".", "dsp", 0, 0, 0, 0, 411 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 412 DSP_CDEV_TYPE_RDWR }, 413 { SND_DEV_DSP, "dsp_mmap", ".", "dsp", 0, 0, 0, 0, 414 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 415 DSP_CDEV_TYPE_RDWR }, 416 { SND_DEV_DSP, "dsp_multich", ".", "dsp", 0, 0, 0, 0, 417 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 418 DSP_CDEV_TYPE_RDWR }, 419 { SND_DEV_DSP, "dsp_spdifout", ".", "dsp", 0, 0, 0, 0, 420 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 421 DSP_CDEV_TYPE_RDWR }, 422 { SND_DEV_DSP, "dsp_spdifin", ".", "dsp", 0, 0, 0, 0, 423 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 424 DSP_CDEV_TYPE_RDWR }, 425}; 426 427#define DSP_FIXUP_ERROR() do { \ 428 prio = dsp_get_flags(i_dev); \ 429 if (!DSP_F_VALID(flags)) \ 430 error = EINVAL; \ 431 if (!DSP_F_DUPLEX(flags) && \ 432 ((DSP_F_READ(flags) && d->reccount == 0) || \ 433 (DSP_F_WRITE(flags) && d->playcount == 0))) \ 434 error = ENOTSUP; \ 435 else if (!DSP_F_DUPLEX(flags) && (prio & SD_F_SIMPLEX) && \ 436 ((DSP_F_READ(flags) && (prio & SD_F_PRIO_WR)) || \ 437 (DSP_F_WRITE(flags) && (prio & SD_F_PRIO_RD)))) \ 438 error = EBUSY; \ 439 else if (DSP_REGISTERED(d, i_dev)) \ 440 error = EBUSY; \ 441} while (0) 442 443static int 444dsp_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 445{ 446 struct pcm_channel *rdch, *wrch; 447 struct snddev_info *d; 448 uint32_t fmt, spd, prio, volctl; 449 int i, error, rderror, wrerror, devtype, wdevunit, rdevunit; 450 451 /* Kind of impossible.. */ 452 if (i_dev == NULL || td == NULL) 453 return (ENODEV); 454 455 d = dsp_get_info(i_dev); 456 if (!PCM_REGISTERED(d)) 457 return (EBADF); 458 459 PCM_GIANT_ENTER(d); 460 461 /* Lock snddev so nobody else can monkey with it. */ 462 PCM_LOCK(d); 463 PCM_WAIT(d); 464 465 /* 466 * Try to acquire cloned device before someone else pick it. 467 * ENODEV means this is not a cloned droids. 468 */ 469 error = snd_clone_acquire(i_dev); 470 if (!(error == 0 || error == ENODEV)) { 471 DSP_FIXUP_ERROR(); 472 PCM_UNLOCK(d); 473 PCM_GIANT_EXIT(d); 474 return (error); 475 } 476 477 error = 0; 478 DSP_FIXUP_ERROR(); 479 480 if (error != 0) { 481 (void)snd_clone_release(i_dev); 482 PCM_UNLOCK(d); 483 PCM_GIANT_EXIT(d); 484 return (error); 485 } 486 487 /* 488 * That is just enough. Acquire and unlock pcm lock so 489 * the other will just have to wait until we finish doing 490 * everything. 491 */ 492 PCM_ACQUIRE(d); 493 PCM_UNLOCK(d); 494 495 devtype = PCMDEV(i_dev); 496 wdevunit = -1; 497 rdevunit = -1; 498 fmt = 0; 499 spd = 0; 500 volctl = DSP_CDEV_VOLCTL_NONE; 501 502 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 503 if (devtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 504 continue; 505 /* 506 * Volume control only valid for DSPHW devices, 507 * and it must be opened in opposite direction be it 508 * simplex or duplex. Anything else will be handled 509 * as usual. 510 */ 511 if (dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY) { 512 if (dsp_cdevs[i].volctl != 0 && 513 DSP_F_READ(flags)) { 514 volctl = DSP_CDEV_VOLCTL_WRITE; 515 flags &= ~FREAD; 516 flags |= FWRITE; 517 } 518 if (DSP_F_READ(flags)) { 519 (void)snd_clone_release(i_dev); 520 PCM_RELEASE_QUICK(d); 521 PCM_GIANT_EXIT(d); 522 return (ENOTSUP); 523 } 524 wdevunit = dev2unit(i_dev); 525 } else if (dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY) { 526 if (dsp_cdevs[i].volctl != 0 && 527 DSP_F_WRITE(flags)) { 528 volctl = DSP_CDEV_VOLCTL_READ; 529 flags &= ~FWRITE; 530 flags |= FREAD; 531 } 532 if (DSP_F_WRITE(flags)) { 533 (void)snd_clone_release(i_dev); 534 PCM_RELEASE_QUICK(d); 535 PCM_GIANT_EXIT(d); 536 return (ENOTSUP); 537 } 538 rdevunit = dev2unit(i_dev); 539 } 540 fmt = dsp_cdevs[i].fmt; 541 spd = dsp_cdevs[i].spd; 542 break; 543 } 544 545 /* No matching devtype? */ 546 if (fmt == 0 || spd == 0) 547 panic("impossible devtype %d", devtype); 548 549 rdch = NULL; 550 wrch = NULL; 551 rderror = 0; 552 wrerror = 0; 553 554 /* 555 * if we get here, the open request is valid- either: 556 * * we were previously not open 557 * * we were open for play xor record and the opener wants 558 * the non-open direction 559 */ 560 if (DSP_F_READ(flags)) { 561 /* open for read */ 562 rderror = pcm_chnalloc(d, &rdch, PCMDIR_REC, 563 td->td_proc->p_pid, td->td_proc->p_comm, rdevunit); 564 565 if (rderror == 0 && chn_reset(rdch, fmt, spd) != 0) 566 rderror = ENXIO; 567 568 if (volctl == DSP_CDEV_VOLCTL_READ) 569 rderror = 0; 570 571 if (rderror != 0) { 572 if (rdch != NULL) 573 pcm_chnrelease(rdch); 574 if (!DSP_F_DUPLEX(flags)) { 575 (void)snd_clone_release(i_dev); 576 PCM_RELEASE_QUICK(d); 577 PCM_GIANT_EXIT(d); 578 return (rderror); 579 } 580 rdch = NULL; 581 } else if (volctl == DSP_CDEV_VOLCTL_READ) { 582 if (rdch != NULL) { 583 pcm_chnref(rdch, 1); 584 pcm_chnrelease(rdch); 585 } 586 } else { 587 if (flags & O_NONBLOCK) 588 rdch->flags |= CHN_F_NBIO; 589 if (flags & O_EXCL) 590 rdch->flags |= CHN_F_EXCLUSIVE; 591 pcm_chnref(rdch, 1); 592 if (volctl == DSP_CDEV_VOLCTL_NONE) 593 chn_vpc_reset(rdch, SND_VOL_C_PCM, 0); 594 CHN_UNLOCK(rdch); 595 } 596 } 597 598 if (DSP_F_WRITE(flags)) { 599 /* open for write */ 600 wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY, 601 td->td_proc->p_pid, td->td_proc->p_comm, wdevunit); 602 603 if (wrerror == 0 && chn_reset(wrch, fmt, spd) != 0) 604 wrerror = ENXIO; 605 606 if (volctl == DSP_CDEV_VOLCTL_WRITE) 607 wrerror = 0; 608 609 if (wrerror != 0) { 610 if (wrch != NULL) 611 pcm_chnrelease(wrch); 612 if (!DSP_F_DUPLEX(flags)) { 613 if (rdch != NULL) { 614 /* 615 * Lock, deref and release previously 616 * created record channel 617 */ 618 CHN_LOCK(rdch); 619 pcm_chnref(rdch, -1); 620 pcm_chnrelease(rdch); 621 } 622 (void)snd_clone_release(i_dev); 623 PCM_RELEASE_QUICK(d); 624 PCM_GIANT_EXIT(d); 625 return (wrerror); 626 } 627 wrch = NULL; 628 } else if (volctl == DSP_CDEV_VOLCTL_WRITE) { 629 if (wrch != NULL) { 630 pcm_chnref(wrch, 1); 631 pcm_chnrelease(wrch); 632 } 633 } else { 634 if (flags & O_NONBLOCK) 635 wrch->flags |= CHN_F_NBIO; 636 if (flags & O_EXCL) 637 wrch->flags |= CHN_F_EXCLUSIVE; 638 pcm_chnref(wrch, 1); 639 if (volctl == DSP_CDEV_VOLCTL_NONE) 640 chn_vpc_reset(wrch, SND_VOL_C_PCM, 0); 641 CHN_UNLOCK(wrch); 642 } 643 } 644 645 646 PCM_LOCK(d); 647 648 /* 649 * We're done. Allocate channels information for this cdev. 650 */ 651 switch (volctl) { 652 case DSP_CDEV_VOLCTL_READ: 653 KASSERT(wrch == NULL, ("wrch=%p not null!", wrch)); 654 dsp_cdevinfo_alloc(i_dev, NULL, NULL, rdch); 655 break; 656 case DSP_CDEV_VOLCTL_WRITE: 657 KASSERT(rdch == NULL, ("rdch=%p not null!", rdch)); 658 dsp_cdevinfo_alloc(i_dev, NULL, NULL, wrch); 659 break; 660 case DSP_CDEV_VOLCTL_NONE: 661 default: 662 if (wrch == NULL && rdch == NULL) { 663 (void)snd_clone_release(i_dev); 664 PCM_RELEASE(d); 665 PCM_UNLOCK(d); 666 PCM_GIANT_EXIT(d); 667 if (wrerror != 0) 668 return (wrerror); 669 if (rderror != 0) 670 return (rderror); 671 return (EINVAL); 672 } 673 dsp_cdevinfo_alloc(i_dev, rdch, wrch, NULL); 674 if (rdch != NULL) 675 CHN_INSERT_HEAD(d, rdch, channels.pcm.opened); 676 if (wrch != NULL) 677 CHN_INSERT_HEAD(d, wrch, channels.pcm.opened); 678 break; 679 } 680 681 /* 682 * Increase clone refcount for its automatic garbage collector. 683 */ 684 (void)snd_clone_ref(i_dev); 685 686 PCM_RELEASE(d); 687 PCM_UNLOCK(d); 688 689 PCM_GIANT_LEAVE(d); 690 691 return (0); 692} 693 694static int 695dsp_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 696{ 697 struct pcm_channel *rdch, *wrch, *volch; 698 struct snddev_info *d; 699 int sg_ids, rdref, wdref; 700 701 d = dsp_get_info(i_dev); 702 if (!DSP_REGISTERED(d, i_dev)) 703 return (EBADF); 704 705 PCM_GIANT_ENTER(d); 706 707 PCM_LOCK(d); 708 PCM_WAIT(d); 709 PCM_ACQUIRE(d); 710 711 rdch = PCM_RDCH(i_dev); 712 wrch = PCM_WRCH(i_dev); 713 volch = PCM_VOLCH(i_dev); 714 715 PCM_RDCH(i_dev) = NULL; 716 PCM_WRCH(i_dev) = NULL; 717 PCM_VOLCH(i_dev) = NULL; 718 719 rdref = -1; 720 wdref = -1; 721 722 if (volch != NULL) { 723 if (volch == rdch) 724 rdref--; 725 else if (volch == wrch) 726 wdref--; 727 else { 728 CHN_LOCK(volch); 729 pcm_chnref(volch, -1); 730 CHN_UNLOCK(volch); 731 } 732 } 733 734 if (rdch != NULL) 735 CHN_REMOVE(d, rdch, channels.pcm.opened); 736 if (wrch != NULL) 737 CHN_REMOVE(d, wrch, channels.pcm.opened); 738 739 if (rdch != NULL || wrch != NULL) { 740 PCM_UNLOCK(d); 741 if (rdch != NULL) { 742 /* 743 * The channel itself need not be locked because: 744 * a) Adding a channel to a syncgroup happens only 745 * in dsp_ioctl(), which cannot run concurrently 746 * to dsp_close(). 747 * b) The syncmember pointer (sm) is protected by 748 * the global syncgroup list lock. 749 * c) A channel can't just disappear, invalidating 750 * pointers, unless it's closed/dereferenced 751 * first. 752 */ 753 PCM_SG_LOCK(); 754 sg_ids = chn_syncdestroy(rdch); 755 PCM_SG_UNLOCK(); 756 if (sg_ids != 0) 757 free_unr(pcmsg_unrhdr, sg_ids); 758 759 CHN_LOCK(rdch); 760 pcm_chnref(rdch, rdref); 761 chn_abort(rdch); /* won't sleep */ 762 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 763 CHN_F_DEAD | CHN_F_EXCLUSIVE); 764 chn_reset(rdch, 0, 0); 765 pcm_chnrelease(rdch); 766 } 767 if (wrch != NULL) { 768 /* 769 * Please see block above. 770 */ 771 PCM_SG_LOCK(); 772 sg_ids = chn_syncdestroy(wrch); 773 PCM_SG_UNLOCK(); 774 if (sg_ids != 0) 775 free_unr(pcmsg_unrhdr, sg_ids); 776 777 CHN_LOCK(wrch); 778 pcm_chnref(wrch, wdref); 779 chn_flush(wrch); /* may sleep */ 780 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 781 CHN_F_DEAD | CHN_F_EXCLUSIVE); 782 chn_reset(wrch, 0, 0); 783 pcm_chnrelease(wrch); 784 } 785 PCM_LOCK(d); 786 } 787 788 dsp_cdevinfo_free(i_dev); 789 /* 790 * Release clone busy state and unref it so the automatic 791 * garbage collector will get the hint and do the remaining 792 * cleanup process. 793 */ 794 (void)snd_clone_release(i_dev); 795 796 /* 797 * destroy_dev() might sleep, so release pcm lock 798 * here and rely on pcm cv serialization. 799 */ 800 PCM_UNLOCK(d); 801 (void)snd_clone_unref(i_dev); 802 PCM_LOCK(d); 803 804 PCM_RELEASE(d); 805 PCM_UNLOCK(d); 806 807 PCM_GIANT_LEAVE(d); 808 809 return (0); 810} 811 812static __inline int 813dsp_io_ops(struct cdev *i_dev, struct uio *buf) 814{ 815 struct snddev_info *d; 816 struct pcm_channel **ch, *rdch, *wrch; 817 int (*chn_io)(struct pcm_channel *, struct uio *); 818 int prio, ret; 819 pid_t runpid; 820 821 KASSERT(i_dev != NULL && buf != NULL && 822 (buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE), 823 ("%s(): io train wreck!", __func__)); 824 825 d = dsp_get_info(i_dev); 826 if (!DSP_REGISTERED(d, i_dev)) 827 return (EBADF); 828 829 PCM_GIANT_ENTER(d); 830 831 switch (buf->uio_rw) { 832 case UIO_READ: 833 prio = SD_F_PRIO_RD; 834 ch = &rdch; 835 chn_io = chn_read; 836 break; 837 case UIO_WRITE: 838 prio = SD_F_PRIO_WR; 839 ch = &wrch; 840 chn_io = chn_write; 841 break; 842 default: 843 panic("invalid/corrupted uio direction: %d", buf->uio_rw); 844 break; 845 } 846 847 rdch = NULL; 848 wrch = NULL; 849 runpid = buf->uio_td->td_proc->p_pid; 850 851 getchns(i_dev, &rdch, &wrch, prio); 852 853 if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) { 854 PCM_GIANT_EXIT(d); 855 return (EBADF); 856 } 857 858 if (((*ch)->flags & (CHN_F_MMAP | CHN_F_DEAD)) || 859 (((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) { 860 relchns(i_dev, rdch, wrch, prio); 861 PCM_GIANT_EXIT(d); 862 return (EINVAL); 863 } else if (!((*ch)->flags & CHN_F_RUNNING)) { 864 (*ch)->flags |= CHN_F_RUNNING; 865 (*ch)->pid = runpid; 866 } 867 868 /* 869 * chn_read/write must give up channel lock in order to copy bytes 870 * from/to userland, so up the "in progress" counter to make sure 871 * someone else doesn't come along and muss up the buffer. 872 */ 873 ++(*ch)->inprog; 874 ret = chn_io(*ch, buf); 875 --(*ch)->inprog; 876 877 CHN_BROADCAST(&(*ch)->cv); 878 879 relchns(i_dev, rdch, wrch, prio); 880 881 PCM_GIANT_LEAVE(d); 882 883 return (ret); 884} 885 886static int 887dsp_read(struct cdev *i_dev, struct uio *buf, int flag) 888{ 889 return (dsp_io_ops(i_dev, buf)); 890} 891 892static int 893dsp_write(struct cdev *i_dev, struct uio *buf, int flag) 894{ 895 return (dsp_io_ops(i_dev, buf)); 896} 897 898static int 899dsp_get_volume_channel(struct cdev *dev, struct pcm_channel **volch) 900{ 901 struct snddev_info *d; 902 struct pcm_channel *c; 903 int unit; 904 905 KASSERT(dev != NULL && volch != NULL, 906 ("%s(): NULL query dev=%p volch=%p", __func__, dev, volch)); 907 908 d = dsp_get_info(dev); 909 if (!PCM_REGISTERED(d)) { 910 *volch = NULL; 911 return (EINVAL); 912 } 913 914 PCM_UNLOCKASSERT(d); 915 916 *volch = NULL; 917 918 c = PCM_VOLCH(dev); 919 if (c != NULL) { 920 if (!(c->feederflags & (1 << FEEDER_VOLUME))) 921 return (-1); 922 *volch = c; 923 return (0); 924 } 925 926 PCM_LOCK(d); 927 PCM_WAIT(d); 928 PCM_ACQUIRE(d); 929 930 unit = dev2unit(dev); 931 932 CHN_FOREACH(c, d, channels.pcm) { 933 CHN_LOCK(c); 934 if (c->unit != unit) { 935 CHN_UNLOCK(c); 936 continue; 937 } 938 *volch = c; 939 pcm_chnref(c, 1); 940 PCM_VOLCH(dev) = c; 941 CHN_UNLOCK(c); 942 PCM_RELEASE(d); 943 PCM_UNLOCK(d); 944 return ((c->feederflags & (1 << FEEDER_VOLUME)) ? 0 : -1); 945 } 946 947 PCM_RELEASE(d); 948 PCM_UNLOCK(d); 949 950 return (EINVAL); 951} 952 953static int 954dsp_ioctl_channel(struct cdev *dev, struct pcm_channel *volch, u_long cmd, 955 caddr_t arg) 956{ 957 struct snddev_info *d; 958 struct pcm_channel *rdch, *wrch; 959 int j, devtype, ret; 960 961 d = dsp_get_info(dev); 962 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 963 return (-1); 964 965 PCM_UNLOCKASSERT(d); 966 967 j = cmd & 0xff; 968 969 rdch = PCM_RDCH(dev); 970 wrch = PCM_WRCH(dev); 971 972 /* No specific channel, look into cache */ 973 if (volch == NULL) 974 volch = PCM_VOLCH(dev); 975 976 /* Look harder */ 977 if (volch == NULL) { 978 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 979 volch = rdch; 980 else if (j == SOUND_MIXER_PCM && wrch != NULL) 981 volch = wrch; 982 } 983 984 devtype = PCMDEV(dev); 985 986 /* Look super harder */ 987 if (volch == NULL && 988 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 989 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 990 ret = dsp_get_volume_channel(dev, &volch); 991 if (ret != 0) 992 return (ret); 993 if (volch == NULL) 994 return (EINVAL); 995 } 996 997 /* Final validation */ 998 if (volch != NULL) { 999 CHN_LOCK(volch); 1000 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 1001 CHN_UNLOCK(volch); 1002 return (-1); 1003 } 1004 if (volch->direction == PCMDIR_PLAY) 1005 wrch = volch; 1006 else 1007 rdch = volch; 1008 } 1009 1010 ret = EINVAL; 1011 1012 if (volch != NULL && 1013 ((j == SOUND_MIXER_PCM && volch->direction == PCMDIR_PLAY) || 1014 (j == SOUND_MIXER_RECLEV && volch->direction == PCMDIR_REC))) { 1015 if ((cmd & ~0xff) == MIXER_WRITE(0)) { 1016 int left, right, center; 1017 1018 left = *(int *)arg & 0x7f; 1019 right = ((*(int *)arg) >> 8) & 0x7f; 1020 center = (left + right) >> 1; 1021 chn_setvolume_multi(volch, SND_VOL_C_PCM, left, right, 1022 center); 1023 } else if ((cmd & ~0xff) == MIXER_READ(0)) { 1024 *(int *)arg = CHN_GETVOLUME(volch, 1025 SND_VOL_C_PCM, SND_CHN_T_FL); 1026 *(int *)arg |= CHN_GETVOLUME(volch, 1027 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1028 } 1029 ret = 0; 1030 } else if (rdch != NULL || wrch != NULL) { 1031 switch (j) { 1032 case SOUND_MIXER_DEVMASK: 1033 case SOUND_MIXER_CAPS: 1034 case SOUND_MIXER_STEREODEVS: 1035 if ((cmd & ~0xff) == MIXER_READ(0)) { 1036 *(int *)arg = 0; 1037 if (rdch != NULL) 1038 *(int *)arg |= SOUND_MASK_RECLEV; 1039 if (wrch != NULL) 1040 *(int *)arg |= SOUND_MASK_PCM; 1041 } 1042 ret = 0; 1043 break; 1044 case SOUND_MIXER_RECMASK: 1045 case SOUND_MIXER_RECSRC: 1046 if ((cmd & ~0xff) == MIXER_READ(0)) 1047 *(int *)arg = 0; 1048 ret = 0; 1049 break; 1050 default: 1051 break; 1052 } 1053 } 1054 1055 if (volch != NULL) 1056 CHN_UNLOCK(volch); 1057 1058 return (ret); 1059} 1060 1061static int 1062dsp_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1063 struct thread *td) 1064{ 1065 struct pcm_channel *chn, *rdch, *wrch; 1066 struct snddev_info *d; 1067 u_long xcmd; 1068 int *arg_i, ret, tmp; 1069 1070 d = dsp_get_info(i_dev); 1071 if (!DSP_REGISTERED(d, i_dev)) 1072 return (EBADF); 1073 1074 PCM_GIANT_ENTER(d); 1075 1076 arg_i = (int *)arg; 1077 ret = 0; 1078 xcmd = 0; 1079 chn = NULL; 1080 1081 if (IOCGROUP(cmd) == 'M') { 1082 if (cmd == OSS_GETVERSION) { 1083 *arg_i = SOUND_VERSION; 1084 PCM_GIANT_EXIT(d); 1085 return (0); 1086 } 1087 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1088 if (ret != -1) { 1089 PCM_GIANT_EXIT(d); 1090 return (ret); 1091 } 1092 1093 if (d->mixer_dev != NULL) { 1094 PCM_ACQUIRE_QUICK(d); 1095 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1096 MIXER_CMD_DIRECT); 1097 PCM_RELEASE_QUICK(d); 1098 } else 1099 ret = EBADF; 1100 1101 PCM_GIANT_EXIT(d); 1102 1103 return (ret); 1104 } 1105 1106 /* 1107 * Certain ioctls may be made on any type of device (audio, mixer, 1108 * and MIDI). Handle those special cases here. 1109 */ 1110 if (IOCGROUP(cmd) == 'X') { 1111 PCM_ACQUIRE_QUICK(d); 1112 switch(cmd) { 1113 case SNDCTL_SYSINFO: 1114 sound_oss_sysinfo((oss_sysinfo *)arg); 1115 break; 1116 case SNDCTL_CARDINFO: 1117 ret = sound_oss_card_info((oss_card_info *)arg); 1118 break; 1119 case SNDCTL_AUDIOINFO: 1120 case SNDCTL_AUDIOINFO_EX: 1121 case SNDCTL_ENGINEINFO: 1122 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1123 break; 1124 case SNDCTL_MIXERINFO: 1125 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1126 break; 1127 default: 1128 ret = EINVAL; 1129 } 1130 PCM_RELEASE_QUICK(d); 1131 PCM_GIANT_EXIT(d); 1132 return (ret); 1133 } 1134 1135 getchns(i_dev, &rdch, &wrch, 0); 1136 1137 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1138 wrch = NULL; 1139 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1140 rdch = NULL; 1141 1142 if (wrch == NULL && rdch == NULL) { 1143 PCM_GIANT_EXIT(d); 1144 return (EINVAL); 1145 } 1146 1147 switch(cmd) { 1148#ifdef OLDPCM_IOCTL 1149 /* 1150 * we start with the new ioctl interface. 1151 */ 1152 case AIONWRITE: /* how many bytes can write ? */ 1153 if (wrch) { 1154 CHN_LOCK(wrch); 1155/* 1156 if (wrch && wrch->bufhard.dl) 1157 while (chn_wrfeed(wrch) == 0); 1158*/ 1159 *arg_i = sndbuf_getfree(wrch->bufsoft); 1160 CHN_UNLOCK(wrch); 1161 } else { 1162 *arg_i = 0; 1163 ret = EINVAL; 1164 } 1165 break; 1166 1167 case AIOSSIZE: /* set the current blocksize */ 1168 { 1169 struct snd_size *p = (struct snd_size *)arg; 1170 1171 p->play_size = 0; 1172 p->rec_size = 0; 1173 PCM_ACQUIRE_QUICK(d); 1174 if (wrch) { 1175 CHN_LOCK(wrch); 1176 chn_setblocksize(wrch, 2, p->play_size); 1177 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1178 CHN_UNLOCK(wrch); 1179 } 1180 if (rdch) { 1181 CHN_LOCK(rdch); 1182 chn_setblocksize(rdch, 2, p->rec_size); 1183 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1184 CHN_UNLOCK(rdch); 1185 } 1186 PCM_RELEASE_QUICK(d); 1187 } 1188 break; 1189 case AIOGSIZE: /* get the current blocksize */ 1190 { 1191 struct snd_size *p = (struct snd_size *)arg; 1192 1193 if (wrch) { 1194 CHN_LOCK(wrch); 1195 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1196 CHN_UNLOCK(wrch); 1197 } 1198 if (rdch) { 1199 CHN_LOCK(rdch); 1200 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1201 CHN_UNLOCK(rdch); 1202 } 1203 } 1204 break; 1205 1206 case AIOSFMT: 1207 case AIOGFMT: 1208 { 1209 snd_chan_param *p = (snd_chan_param *)arg; 1210 1211 if (cmd == AIOSFMT && 1212 ((p->play_format != 0 && p->play_rate == 0) || 1213 (p->rec_format != 0 && p->rec_rate == 0))) { 1214 ret = EINVAL; 1215 break; 1216 } 1217 PCM_ACQUIRE_QUICK(d); 1218 if (wrch) { 1219 CHN_LOCK(wrch); 1220 if (cmd == AIOSFMT && p->play_format != 0) { 1221 chn_setformat(wrch, 1222 SND_FORMAT(p->play_format, 1223 AFMT_CHANNEL(wrch->format), 1224 AFMT_EXTCHANNEL(wrch->format))); 1225 chn_setspeed(wrch, p->play_rate); 1226 } 1227 p->play_rate = wrch->speed; 1228 p->play_format = AFMT_ENCODING(wrch->format); 1229 CHN_UNLOCK(wrch); 1230 } else { 1231 p->play_rate = 0; 1232 p->play_format = 0; 1233 } 1234 if (rdch) { 1235 CHN_LOCK(rdch); 1236 if (cmd == AIOSFMT && p->rec_format != 0) { 1237 chn_setformat(rdch, 1238 SND_FORMAT(p->rec_format, 1239 AFMT_CHANNEL(rdch->format), 1240 AFMT_EXTCHANNEL(rdch->format))); 1241 chn_setspeed(rdch, p->rec_rate); 1242 } 1243 p->rec_rate = rdch->speed; 1244 p->rec_format = AFMT_ENCODING(rdch->format); 1245 CHN_UNLOCK(rdch); 1246 } else { 1247 p->rec_rate = 0; 1248 p->rec_format = 0; 1249 } 1250 PCM_RELEASE_QUICK(d); 1251 } 1252 break; 1253 1254 case AIOGCAP: /* get capabilities */ 1255 { 1256 snd_capabilities *p = (snd_capabilities *)arg; 1257 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1258 struct cdev *pdev; 1259 1260 PCM_LOCK(d); 1261 if (rdch) { 1262 CHN_LOCK(rdch); 1263 rcaps = chn_getcaps(rdch); 1264 } 1265 if (wrch) { 1266 CHN_LOCK(wrch); 1267 pcaps = chn_getcaps(wrch); 1268 } 1269 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1270 pcaps? pcaps->minspeed : 0); 1271 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1272 pcaps? pcaps->maxspeed : 1000000); 1273 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1274 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1275 /* XXX bad on sb16 */ 1276 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1277 (wrch? chn_getformats(wrch) : 0xffffffff); 1278 if (rdch && wrch) 1279 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1280 pdev = d->mixer_dev; 1281 p->mixers = 1; /* default: one mixer */ 1282 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1283 p->left = p->right = 100; 1284 if (wrch) 1285 CHN_UNLOCK(wrch); 1286 if (rdch) 1287 CHN_UNLOCK(rdch); 1288 PCM_UNLOCK(d); 1289 } 1290 break; 1291 1292 case AIOSTOP: 1293 if (*arg_i == AIOSYNC_PLAY && wrch) { 1294 CHN_LOCK(wrch); 1295 *arg_i = chn_abort(wrch); 1296 CHN_UNLOCK(wrch); 1297 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1298 CHN_LOCK(rdch); 1299 *arg_i = chn_abort(rdch); 1300 CHN_UNLOCK(rdch); 1301 } else { 1302 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1303 *arg_i = 0; 1304 } 1305 break; 1306 1307 case AIOSYNC: 1308 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1309 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1310 break; 1311#endif 1312 /* 1313 * here follow the standard ioctls (filio.h etc.) 1314 */ 1315 case FIONREAD: /* get # bytes to read */ 1316 if (rdch) { 1317 CHN_LOCK(rdch); 1318/* if (rdch && rdch->bufhard.dl) 1319 while (chn_rdfeed(rdch) == 0); 1320*/ 1321 *arg_i = sndbuf_getready(rdch->bufsoft); 1322 CHN_UNLOCK(rdch); 1323 } else { 1324 *arg_i = 0; 1325 ret = EINVAL; 1326 } 1327 break; 1328 1329 case FIOASYNC: /*set/clear async i/o */ 1330 DEB( printf("FIOASYNC\n") ; ) 1331 break; 1332 1333 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1334 case FIONBIO: /* set/clear non-blocking i/o */ 1335 if (rdch) { 1336 CHN_LOCK(rdch); 1337 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1338 rdch->flags |= CHN_F_NBIO; 1339 else 1340 rdch->flags &= ~CHN_F_NBIO; 1341 CHN_UNLOCK(rdch); 1342 } 1343 if (wrch) { 1344 CHN_LOCK(wrch); 1345 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1346 wrch->flags |= CHN_F_NBIO; 1347 else 1348 wrch->flags &= ~CHN_F_NBIO; 1349 CHN_UNLOCK(wrch); 1350 } 1351 break; 1352 1353 /* 1354 * Finally, here is the linux-compatible ioctl interface 1355 */ 1356#define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1357 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1358 case SNDCTL_DSP_GETBLKSIZE: 1359 chn = wrch ? wrch : rdch; 1360 if (chn) { 1361 CHN_LOCK(chn); 1362 *arg_i = sndbuf_getblksz(chn->bufsoft); 1363 CHN_UNLOCK(chn); 1364 } else { 1365 *arg_i = 0; 1366 ret = EINVAL; 1367 } 1368 break; 1369 1370 case SNDCTL_DSP_SETBLKSIZE: 1371 RANGE(*arg_i, 16, 65536); 1372 PCM_ACQUIRE_QUICK(d); 1373 if (wrch) { 1374 CHN_LOCK(wrch); 1375 chn_setblocksize(wrch, 2, *arg_i); 1376 CHN_UNLOCK(wrch); 1377 } 1378 if (rdch) { 1379 CHN_LOCK(rdch); 1380 chn_setblocksize(rdch, 2, *arg_i); 1381 CHN_UNLOCK(rdch); 1382 } 1383 PCM_RELEASE_QUICK(d); 1384 break; 1385 1386 case SNDCTL_DSP_RESET: 1387 DEB(printf("dsp reset\n")); 1388 if (wrch) { 1389 CHN_LOCK(wrch); 1390 chn_abort(wrch); 1391 chn_resetbuf(wrch); 1392 CHN_UNLOCK(wrch); 1393 } 1394 if (rdch) { 1395 CHN_LOCK(rdch); 1396 chn_abort(rdch); 1397 chn_resetbuf(rdch); 1398 CHN_UNLOCK(rdch); 1399 } 1400 break; 1401 1402 case SNDCTL_DSP_SYNC: 1403 DEB(printf("dsp sync\n")); 1404 /* chn_sync may sleep */ 1405 if (wrch) { 1406 CHN_LOCK(wrch); 1407 chn_sync(wrch, 0); 1408 CHN_UNLOCK(wrch); 1409 } 1410 break; 1411 1412 case SNDCTL_DSP_SPEED: 1413 /* chn_setspeed may sleep */ 1414 tmp = 0; 1415 PCM_ACQUIRE_QUICK(d); 1416 if (wrch) { 1417 CHN_LOCK(wrch); 1418 ret = chn_setspeed(wrch, *arg_i); 1419 tmp = wrch->speed; 1420 CHN_UNLOCK(wrch); 1421 } 1422 if (rdch && ret == 0) { 1423 CHN_LOCK(rdch); 1424 ret = chn_setspeed(rdch, *arg_i); 1425 if (tmp == 0) 1426 tmp = rdch->speed; 1427 CHN_UNLOCK(rdch); 1428 } 1429 PCM_RELEASE_QUICK(d); 1430 *arg_i = tmp; 1431 break; 1432 1433 case SOUND_PCM_READ_RATE: 1434 chn = wrch ? wrch : rdch; 1435 if (chn) { 1436 CHN_LOCK(chn); 1437 *arg_i = chn->speed; 1438 CHN_UNLOCK(chn); 1439 } else { 1440 *arg_i = 0; 1441 ret = EINVAL; 1442 } 1443 break; 1444 1445 case SNDCTL_DSP_STEREO: 1446 tmp = -1; 1447 *arg_i = (*arg_i)? 2 : 1; 1448 PCM_ACQUIRE_QUICK(d); 1449 if (wrch) { 1450 CHN_LOCK(wrch); 1451 ret = chn_setformat(wrch, 1452 SND_FORMAT(wrch->format, *arg_i, 0)); 1453 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1454 CHN_UNLOCK(wrch); 1455 } 1456 if (rdch && ret == 0) { 1457 CHN_LOCK(rdch); 1458 ret = chn_setformat(rdch, 1459 SND_FORMAT(rdch->format, *arg_i, 0)); 1460 if (tmp == -1) 1461 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1462 CHN_UNLOCK(rdch); 1463 } 1464 PCM_RELEASE_QUICK(d); 1465 *arg_i = tmp; 1466 break; 1467 1468 case SOUND_PCM_WRITE_CHANNELS: 1469/* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1470 if (*arg_i < 0) { 1471 *arg_i = 0; 1472 ret = EINVAL; 1473 break; 1474 } 1475 if (*arg_i != 0) { 1476 struct pcmchan_matrix *m; 1477 uint32_t ext; 1478 1479 tmp = 0; 1480 if (*arg_i > SND_CHN_MAX) 1481 *arg_i = SND_CHN_MAX; 1482 1483 m = feeder_matrix_default_channel_map(*arg_i); 1484 if (m != NULL) 1485 ext = m->ext; 1486 else 1487 ext = 0; 1488 1489 PCM_ACQUIRE_QUICK(d); 1490 if (wrch) { 1491 CHN_LOCK(wrch); 1492 ret = chn_setformat(wrch, 1493 SND_FORMAT(wrch->format, *arg_i, ext)); 1494 tmp = AFMT_CHANNEL(wrch->format); 1495 CHN_UNLOCK(wrch); 1496 } 1497 if (rdch && ret == 0) { 1498 CHN_LOCK(rdch); 1499 ret = chn_setformat(rdch, 1500 SND_FORMAT(rdch->format, *arg_i, ext)); 1501 if (tmp == 0) 1502 tmp = AFMT_CHANNEL(rdch->format); 1503 CHN_UNLOCK(rdch); 1504 } 1505 PCM_RELEASE_QUICK(d); 1506 *arg_i = tmp; 1507 } else { 1508 chn = wrch ? wrch : rdch; 1509 CHN_LOCK(chn); 1510 *arg_i = AFMT_CHANNEL(chn->format); 1511 CHN_UNLOCK(chn); 1512 } 1513 break; 1514 1515 case SOUND_PCM_READ_CHANNELS: 1516 chn = wrch ? wrch : rdch; 1517 if (chn) { 1518 CHN_LOCK(chn); 1519 *arg_i = AFMT_CHANNEL(chn->format); 1520 CHN_UNLOCK(chn); 1521 } else { 1522 *arg_i = 0; 1523 ret = EINVAL; 1524 } 1525 break; 1526 1527 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1528 chn = wrch ? wrch : rdch; 1529 if (chn) { 1530 CHN_LOCK(chn); 1531 *arg_i = chn_getformats(chn); 1532 CHN_UNLOCK(chn); 1533 } else { 1534 *arg_i = 0; 1535 ret = EINVAL; 1536 } 1537 break; 1538 1539 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1540 if (*arg_i != AFMT_QUERY) { 1541 tmp = 0; 1542 PCM_ACQUIRE_QUICK(d); 1543 if (wrch) { 1544 CHN_LOCK(wrch); 1545 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1546 AFMT_CHANNEL(wrch->format), 1547 AFMT_EXTCHANNEL(wrch->format))); 1548 tmp = wrch->format; 1549 CHN_UNLOCK(wrch); 1550 } 1551 if (rdch && ret == 0) { 1552 CHN_LOCK(rdch); 1553 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1554 AFMT_CHANNEL(rdch->format), 1555 AFMT_EXTCHANNEL(rdch->format))); 1556 if (tmp == 0) 1557 tmp = rdch->format; 1558 CHN_UNLOCK(rdch); 1559 } 1560 PCM_RELEASE_QUICK(d); 1561 *arg_i = AFMT_ENCODING(tmp); 1562 } else { 1563 chn = wrch ? wrch : rdch; 1564 CHN_LOCK(chn); 1565 *arg_i = AFMT_ENCODING(chn->format); 1566 CHN_UNLOCK(chn); 1567 } 1568 break; 1569 1570 case SNDCTL_DSP_SETFRAGMENT: 1571 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1572 { 1573 uint32_t fragln = (*arg_i) & 0x0000ffff; 1574 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1575 uint32_t fragsz; 1576 uint32_t r_maxfrags, r_fragsz; 1577 1578 RANGE(fragln, 4, 16); 1579 fragsz = 1 << fragln; 1580 1581 if (maxfrags == 0) 1582 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1583 if (maxfrags < 2) 1584 maxfrags = 2; 1585 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1586 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1587 1588 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1589 PCM_ACQUIRE_QUICK(d); 1590 if (rdch) { 1591 CHN_LOCK(rdch); 1592 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1593 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1594 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1595 CHN_UNLOCK(rdch); 1596 } else { 1597 r_maxfrags = maxfrags; 1598 r_fragsz = fragsz; 1599 } 1600 if (wrch && ret == 0) { 1601 CHN_LOCK(wrch); 1602 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1603 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1604 fragsz = sndbuf_getblksz(wrch->bufsoft); 1605 CHN_UNLOCK(wrch); 1606 } else { /* use whatever came from the read channel */ 1607 maxfrags = r_maxfrags; 1608 fragsz = r_fragsz; 1609 } 1610 PCM_RELEASE_QUICK(d); 1611 1612 fragln = 0; 1613 while (fragsz > 1) { 1614 fragln++; 1615 fragsz >>= 1; 1616 } 1617 *arg_i = (maxfrags << 16) | fragln; 1618 } 1619 break; 1620 1621 case SNDCTL_DSP_GETISPACE: 1622 /* return the size of data available in the input queue */ 1623 { 1624 audio_buf_info *a = (audio_buf_info *)arg; 1625 if (rdch) { 1626 struct snd_dbuf *bs = rdch->bufsoft; 1627 1628 CHN_LOCK(rdch); 1629 a->bytes = sndbuf_getready(bs); 1630 a->fragments = a->bytes / sndbuf_getblksz(bs); 1631 a->fragstotal = sndbuf_getblkcnt(bs); 1632 a->fragsize = sndbuf_getblksz(bs); 1633 CHN_UNLOCK(rdch); 1634 } else 1635 ret = EINVAL; 1636 } 1637 break; 1638 1639 case SNDCTL_DSP_GETOSPACE: 1640 /* return space available in the output queue */ 1641 { 1642 audio_buf_info *a = (audio_buf_info *)arg; 1643 if (wrch) { 1644 struct snd_dbuf *bs = wrch->bufsoft; 1645 1646 CHN_LOCK(wrch); 1647 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1648 a->bytes = sndbuf_getfree(bs); 1649 a->fragments = a->bytes / sndbuf_getblksz(bs); 1650 a->fragstotal = sndbuf_getblkcnt(bs); 1651 a->fragsize = sndbuf_getblksz(bs); 1652 CHN_UNLOCK(wrch); 1653 } else 1654 ret = EINVAL; 1655 } 1656 break; 1657 1658 case SNDCTL_DSP_GETIPTR: 1659 { 1660 count_info *a = (count_info *)arg; 1661 if (rdch) { 1662 struct snd_dbuf *bs = rdch->bufsoft; 1663 1664 CHN_LOCK(rdch); 1665 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1666 a->bytes = sndbuf_gettotal(bs); 1667 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1668 a->ptr = sndbuf_getfreeptr(bs); 1669 rdch->blocks = sndbuf_getblocks(bs); 1670 CHN_UNLOCK(rdch); 1671 } else 1672 ret = EINVAL; 1673 } 1674 break; 1675 1676 case SNDCTL_DSP_GETOPTR: 1677 { 1678 count_info *a = (count_info *)arg; 1679 if (wrch) { 1680 struct snd_dbuf *bs = wrch->bufsoft; 1681 1682 CHN_LOCK(wrch); 1683 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1684 a->bytes = sndbuf_gettotal(bs); 1685 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1686 a->ptr = sndbuf_getreadyptr(bs); 1687 wrch->blocks = sndbuf_getblocks(bs); 1688 CHN_UNLOCK(wrch); 1689 } else 1690 ret = EINVAL; 1691 } 1692 break; 1693 1694 case SNDCTL_DSP_GETCAPS: 1695 PCM_LOCK(d); 1696 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1697 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1698 *arg_i |= PCM_CAP_DUPLEX; 1699 PCM_UNLOCK(d); 1700 break; 1701 1702 case SOUND_PCM_READ_BITS: 1703 chn = wrch ? wrch : rdch; 1704 if (chn) { 1705 CHN_LOCK(chn); 1706 if (chn->format & AFMT_8BIT) 1707 *arg_i = 8; 1708 else if (chn->format & AFMT_16BIT) 1709 *arg_i = 16; 1710 else if (chn->format & AFMT_24BIT) 1711 *arg_i = 24; 1712 else if (chn->format & AFMT_32BIT) 1713 *arg_i = 32; 1714 else 1715 ret = EINVAL; 1716 CHN_UNLOCK(chn); 1717 } else { 1718 *arg_i = 0; 1719 ret = EINVAL; 1720 } 1721 break; 1722 1723 case SNDCTL_DSP_SETTRIGGER: 1724 if (rdch) { 1725 CHN_LOCK(rdch); 1726 rdch->flags &= ~CHN_F_NOTRIGGER; 1727 if (*arg_i & PCM_ENABLE_INPUT) 1728 chn_start(rdch, 1); 1729 else { 1730 chn_abort(rdch); 1731 chn_resetbuf(rdch); 1732 rdch->flags |= CHN_F_NOTRIGGER; 1733 } 1734 CHN_UNLOCK(rdch); 1735 } 1736 if (wrch) { 1737 CHN_LOCK(wrch); 1738 wrch->flags &= ~CHN_F_NOTRIGGER; 1739 if (*arg_i & PCM_ENABLE_OUTPUT) 1740 chn_start(wrch, 1); 1741 else { 1742 chn_abort(wrch); 1743 chn_resetbuf(wrch); 1744 wrch->flags |= CHN_F_NOTRIGGER; 1745 } 1746 CHN_UNLOCK(wrch); 1747 } 1748 break; 1749 1750 case SNDCTL_DSP_GETTRIGGER: 1751 *arg_i = 0; 1752 if (wrch) { 1753 CHN_LOCK(wrch); 1754 if (wrch->flags & CHN_F_TRIGGERED) 1755 *arg_i |= PCM_ENABLE_OUTPUT; 1756 CHN_UNLOCK(wrch); 1757 } 1758 if (rdch) { 1759 CHN_LOCK(rdch); 1760 if (rdch->flags & CHN_F_TRIGGERED) 1761 *arg_i |= PCM_ENABLE_INPUT; 1762 CHN_UNLOCK(rdch); 1763 } 1764 break; 1765 1766 case SNDCTL_DSP_GETODELAY: 1767 if (wrch) { 1768 struct snd_dbuf *bs = wrch->bufsoft; 1769 1770 CHN_LOCK(wrch); 1771 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1772 *arg_i = sndbuf_getready(bs); 1773 CHN_UNLOCK(wrch); 1774 } else 1775 ret = EINVAL; 1776 break; 1777 1778 case SNDCTL_DSP_POST: 1779 if (wrch) { 1780 CHN_LOCK(wrch); 1781 wrch->flags &= ~CHN_F_NOTRIGGER; 1782 chn_start(wrch, 1); 1783 CHN_UNLOCK(wrch); 1784 } 1785 break; 1786 1787 case SNDCTL_DSP_SETDUPLEX: 1788 /* 1789 * switch to full-duplex mode if card is in half-duplex 1790 * mode and is able to work in full-duplex mode 1791 */ 1792 PCM_LOCK(d); 1793 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1794 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1795 PCM_UNLOCK(d); 1796 break; 1797 1798 /* 1799 * The following four ioctls are simple wrappers around mixer_ioctl 1800 * with no further processing. xcmd is short for "translated 1801 * command". 1802 */ 1803 case SNDCTL_DSP_GETRECVOL: 1804 if (xcmd == 0) { 1805 xcmd = SOUND_MIXER_READ_RECLEV; 1806 chn = rdch; 1807 } 1808 /* FALLTHROUGH */ 1809 case SNDCTL_DSP_SETRECVOL: 1810 if (xcmd == 0) { 1811 xcmd = SOUND_MIXER_WRITE_RECLEV; 1812 chn = rdch; 1813 } 1814 /* FALLTHROUGH */ 1815 case SNDCTL_DSP_GETPLAYVOL: 1816 if (xcmd == 0) { 1817 xcmd = SOUND_MIXER_READ_PCM; 1818 chn = wrch; 1819 } 1820 /* FALLTHROUGH */ 1821 case SNDCTL_DSP_SETPLAYVOL: 1822 if (xcmd == 0) { 1823 xcmd = SOUND_MIXER_WRITE_PCM; 1824 chn = wrch; 1825 } 1826 1827 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1828 if (ret != -1) { 1829 PCM_GIANT_EXIT(d); 1830 return (ret); 1831 } 1832 1833 if (d->mixer_dev != NULL) { 1834 PCM_ACQUIRE_QUICK(d); 1835 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1836 MIXER_CMD_DIRECT); 1837 PCM_RELEASE_QUICK(d); 1838 } else 1839 ret = ENOTSUP; 1840 1841 break; 1842 1843 case SNDCTL_DSP_GET_RECSRC_NAMES: 1844 case SNDCTL_DSP_GET_RECSRC: 1845 case SNDCTL_DSP_SET_RECSRC: 1846 if (d->mixer_dev != NULL) { 1847 PCM_ACQUIRE_QUICK(d); 1848 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1849 MIXER_CMD_DIRECT); 1850 PCM_RELEASE_QUICK(d); 1851 } else 1852 ret = ENOTSUP; 1853 break; 1854 1855 /* 1856 * The following 3 ioctls aren't very useful at the moment. For 1857 * now, only a single channel is associated with a cdev (/dev/dspN 1858 * instance), so there's only a single output routing to use (i.e., 1859 * the wrch bound to this cdev). 1860 */ 1861 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1862 { 1863 oss_mixer_enuminfo *ei; 1864 ei = (oss_mixer_enuminfo *)arg; 1865 ei->dev = 0; 1866 ei->ctrl = 0; 1867 ei->version = 0; /* static for now */ 1868 ei->strindex[0] = 0; 1869 1870 if (wrch != NULL) { 1871 ei->nvalues = 1; 1872 strlcpy(ei->strings, wrch->name, 1873 sizeof(ei->strings)); 1874 } else { 1875 ei->nvalues = 0; 1876 ei->strings[0] = '\0'; 1877 } 1878 } 1879 break; 1880 case SNDCTL_DSP_GET_PLAYTGT: 1881 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1882 /* 1883 * Re: SET_PLAYTGT 1884 * OSSv4: "The value that was accepted by the device will 1885 * be returned back in the variable pointed by the 1886 * argument." 1887 */ 1888 if (wrch != NULL) 1889 *arg_i = 0; 1890 else 1891 ret = EINVAL; 1892 break; 1893 1894 case SNDCTL_DSP_SILENCE: 1895 /* 1896 * Flush the software (pre-feed) buffer, but try to minimize playback 1897 * interruption. (I.e., record unplayed samples with intent to 1898 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1899 * functionality. 1900 */ 1901 if (wrch == NULL) 1902 ret = EINVAL; 1903 else { 1904 struct snd_dbuf *bs; 1905 CHN_LOCK(wrch); 1906 while (wrch->inprog != 0) 1907 cv_wait(&wrch->cv, wrch->lock); 1908 bs = wrch->bufsoft; 1909 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1910 bs->sl = sndbuf_getready(bs); 1911 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1912 sndbuf_fillsilence(bs); 1913 chn_start(wrch, 0); 1914 } 1915 CHN_UNLOCK(wrch); 1916 } 1917 break; 1918 1919 case SNDCTL_DSP_SKIP: 1920 /* 1921 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1922 * playback buffer by moving the current write position immediately 1923 * before the point where the device is currently reading the samples." 1924 */ 1925 if (wrch == NULL) 1926 ret = EINVAL; 1927 else { 1928 struct snd_dbuf *bs; 1929 CHN_LOCK(wrch); 1930 while (wrch->inprog != 0) 1931 cv_wait(&wrch->cv, wrch->lock); 1932 bs = wrch->bufsoft; 1933 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1934 sndbuf_softreset(bs); 1935 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1936 bs->sl = 0; 1937 chn_start(wrch, 0); 1938 } 1939 CHN_UNLOCK(wrch); 1940 } 1941 break; 1942 1943 case SNDCTL_DSP_CURRENT_OPTR: 1944 case SNDCTL_DSP_CURRENT_IPTR: 1945 /** 1946 * @note Changing formats resets the buffer counters, which differs 1947 * from the 4Front drivers. However, I don't expect this to be 1948 * much of a problem. 1949 * 1950 * @note In a test where @c CURRENT_OPTR is called immediately after write 1951 * returns, this driver is about 32K samples behind whereas 1952 * 4Front's is about 8K samples behind. Should determine source 1953 * of discrepancy, even if only out of curiosity. 1954 * 1955 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1956 */ 1957 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1958 if (chn == NULL) 1959 ret = EINVAL; 1960 else { 1961 struct snd_dbuf *bs; 1962 /* int tmp; */ 1963 1964 oss_count_t *oc = (oss_count_t *)arg; 1965 1966 CHN_LOCK(chn); 1967 bs = chn->bufsoft; 1968#if 0 1969 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1970 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1971 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1972#else 1973 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1974 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1975#endif 1976 CHN_UNLOCK(chn); 1977 } 1978 break; 1979 1980 case SNDCTL_DSP_HALT_OUTPUT: 1981 case SNDCTL_DSP_HALT_INPUT: 1982 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1983 if (chn == NULL) 1984 ret = EINVAL; 1985 else { 1986 CHN_LOCK(chn); 1987 chn_abort(chn); 1988 CHN_UNLOCK(chn); 1989 } 1990 break; 1991 1992 case SNDCTL_DSP_LOW_WATER: 1993 /* 1994 * Set the number of bytes required to attract attention by 1995 * select/poll. 1996 */ 1997 if (wrch != NULL) { 1998 CHN_LOCK(wrch); 1999 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 2000 CHN_UNLOCK(wrch); 2001 } 2002 if (rdch != NULL) { 2003 CHN_LOCK(rdch); 2004 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2005 CHN_UNLOCK(rdch); 2006 } 2007 break; 2008 2009 case SNDCTL_DSP_GETERROR: 2010 /* 2011 * OSSv4 docs: "All errors and counters will automatically be 2012 * cleared to zeroes after the call so each call will return only 2013 * the errors that occurred after the previous invocation. ... The 2014 * play_underruns and rec_overrun fields are the only useful fields 2015 * returned by OSS 4.0." 2016 */ 2017 { 2018 audio_errinfo *ei = (audio_errinfo *)arg; 2019 2020 bzero((void *)ei, sizeof(*ei)); 2021 2022 if (wrch != NULL) { 2023 CHN_LOCK(wrch); 2024 ei->play_underruns = wrch->xruns; 2025 wrch->xruns = 0; 2026 CHN_UNLOCK(wrch); 2027 } 2028 if (rdch != NULL) { 2029 CHN_LOCK(rdch); 2030 ei->rec_overruns = rdch->xruns; 2031 rdch->xruns = 0; 2032 CHN_UNLOCK(rdch); 2033 } 2034 } 2035 break; 2036 2037 case SNDCTL_DSP_SYNCGROUP: 2038 PCM_ACQUIRE_QUICK(d); 2039 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2040 PCM_RELEASE_QUICK(d); 2041 break; 2042 2043 case SNDCTL_DSP_SYNCSTART: 2044 PCM_ACQUIRE_QUICK(d); 2045 ret = dsp_oss_syncstart(*arg_i); 2046 PCM_RELEASE_QUICK(d); 2047 break; 2048 2049 case SNDCTL_DSP_POLICY: 2050 PCM_ACQUIRE_QUICK(d); 2051 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2052 PCM_RELEASE_QUICK(d); 2053 break; 2054 2055 case SNDCTL_DSP_COOKEDMODE: 2056 PCM_ACQUIRE_QUICK(d); 2057 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2058 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2059 PCM_RELEASE_QUICK(d); 2060 break; 2061 case SNDCTL_DSP_GET_CHNORDER: 2062 PCM_ACQUIRE_QUICK(d); 2063 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2064 PCM_RELEASE_QUICK(d); 2065 break; 2066 case SNDCTL_DSP_SET_CHNORDER: 2067 PCM_ACQUIRE_QUICK(d); 2068 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2069 PCM_RELEASE_QUICK(d); 2070 break; 2071 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2072 PCM_ACQUIRE_QUICK(d); 2073 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2074 PCM_RELEASE_QUICK(d); 2075 break; 2076 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2077 ret = EINVAL; 2078 break; 2079#ifdef OSSV4_EXPERIMENT 2080 /* 2081 * XXX The following ioctls are not yet supported and just return 2082 * EINVAL. 2083 */ 2084 case SNDCTL_DSP_GETOPEAKS: 2085 case SNDCTL_DSP_GETIPEAKS: 2086 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2087 if (chn == NULL) 2088 ret = EINVAL; 2089 else { 2090 oss_peaks_t *op = (oss_peaks_t *)arg; 2091 int lpeak, rpeak; 2092 2093 CHN_LOCK(chn); 2094 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2095 if (ret == -1) 2096 ret = EINVAL; 2097 else { 2098 (*op)[0] = lpeak; 2099 (*op)[1] = rpeak; 2100 } 2101 CHN_UNLOCK(chn); 2102 } 2103 break; 2104 2105 /* 2106 * XXX Once implemented, revisit this for proper cv protection 2107 * (if necessary). 2108 */ 2109 case SNDCTL_GETLABEL: 2110 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2111 break; 2112 case SNDCTL_SETLABEL: 2113 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2114 break; 2115 case SNDCTL_GETSONG: 2116 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2117 break; 2118 case SNDCTL_SETSONG: 2119 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2120 break; 2121 case SNDCTL_SETNAME: 2122 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2123 break; 2124#if 0 2125 /** 2126 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2127 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2128 * 4Front Technologies. 2129 */ 2130 case SNDCTL_DSP_READCTL: 2131 case SNDCTL_DSP_WRITECTL: 2132 ret = EINVAL; 2133 break; 2134#endif /* !0 (explicitly omitted ioctls) */ 2135 2136#endif /* !OSSV4_EXPERIMENT */ 2137 case SNDCTL_DSP_MAPINBUF: 2138 case SNDCTL_DSP_MAPOUTBUF: 2139 case SNDCTL_DSP_SETSYNCRO: 2140 /* undocumented */ 2141 2142 case SNDCTL_DSP_SUBDIVIDE: 2143 case SOUND_PCM_WRITE_FILTER: 2144 case SOUND_PCM_READ_FILTER: 2145 /* dunno what these do, don't sound important */ 2146 2147 default: 2148 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2149 ret = EINVAL; 2150 break; 2151 } 2152 2153 PCM_GIANT_LEAVE(d); 2154 2155 return (ret); 2156} 2157 2158static int 2159dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2160{ 2161 struct snddev_info *d; 2162 struct pcm_channel *wrch, *rdch; 2163 int ret, e; 2164 2165 d = dsp_get_info(i_dev); 2166 if (!DSP_REGISTERED(d, i_dev)) 2167 return (EBADF); 2168 2169 PCM_GIANT_ENTER(d); 2170 2171 wrch = NULL; 2172 rdch = NULL; 2173 ret = 0; 2174 2175 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2176 2177 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2178 e = (events & (POLLOUT | POLLWRNORM)); 2179 if (e) 2180 ret |= chn_poll(wrch, e, td); 2181 } 2182 2183 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2184 e = (events & (POLLIN | POLLRDNORM)); 2185 if (e) 2186 ret |= chn_poll(rdch, e, td); 2187 } 2188 2189 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2190 2191 PCM_GIANT_LEAVE(d); 2192 2193 return (ret); 2194} 2195 2196static int 2197dsp_mmap(struct cdev *i_dev, vm_ooffset_t offset, vm_paddr_t *paddr, 2198 int nprot, vm_memattr_t *memattr) 2199{ 2200 2201 /* XXX memattr is not honored */ 2202 *paddr = vtophys(offset); 2203 return (0); 2204} 2205 2206static int 2207dsp_mmap_single(struct cdev *i_dev, vm_ooffset_t *offset, 2208 vm_size_t size, struct vm_object **object, int nprot) 2209{ 2210 struct snddev_info *d; 2211 struct pcm_channel *wrch, *rdch, *c; 2212 2213 /* 2214 * Reject PROT_EXEC by default. It just doesn't makes sense. 2215 * Unfortunately, we have to give up this one due to linux_mmap 2216 * changes. 2217 * 2218 * http://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2219 * 2220 */ 2221#ifdef SV_ABI_LINUX 2222 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2223 (dsp_mmap_allow_prot_exec == 0 && 2224 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2225#else 2226 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2227#endif 2228 return (EINVAL); 2229 2230 /* 2231 * PROT_READ (alone) selects the input buffer. 2232 * PROT_WRITE (alone) selects the output buffer. 2233 * PROT_WRITE|PROT_READ together select the output buffer. 2234 */ 2235 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2236 return (EINVAL); 2237 2238 d = dsp_get_info(i_dev); 2239 if (!DSP_REGISTERED(d, i_dev)) 2240 return (EINVAL); 2241 2242 PCM_GIANT_ENTER(d); 2243 2244 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2245 2246 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2247 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2248 (*offset + size) > sndbuf_getsize(c->bufsoft) || 2249 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2250 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2251 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2252 PCM_GIANT_EXIT(d); 2253 return (EINVAL); 2254 } 2255 2256 if (wrch != NULL) 2257 wrch->flags |= CHN_F_MMAP; 2258 if (rdch != NULL) 2259 rdch->flags |= CHN_F_MMAP; 2260 2261 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2262 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2263 *object = vm_pager_allocate(OBJT_DEVICE, i_dev, 2264 size, nprot, *offset, curthread->td_ucred); 2265 2266 PCM_GIANT_LEAVE(d); 2267 2268 if (*object == NULL) 2269 return (EINVAL); 2270 return (0); 2271} 2272 2273/* So much for dev_stdclone() */ 2274static int 2275dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2276{ 2277 size_t len; 2278 2279 len = strlen(namep); 2280 2281 if (bcmp(name, namep, len) != 0) 2282 return (ENODEV); 2283 2284 name += len; 2285 2286 if (isdigit(*name) == 0) 2287 return (ENODEV); 2288 2289 len = strlen(sep); 2290 2291 if (*name == '0' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2292 return (ENODEV); 2293 2294 for (*u = 0; isdigit(*name) != 0; name++) { 2295 *u *= 10; 2296 *u += *name - '0'; 2297 if (*u > dsp_umax) 2298 return (ENODEV); 2299 } 2300 2301 if (*name == '\0') 2302 return ((use_sep == 0) ? 0 : ENODEV); 2303 2304 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2305 return (ENODEV); 2306 2307 name += len; 2308 2309 if (*name == '0' && name[1] != '\0') 2310 return (ENODEV); 2311 2312 for (*c = 0; isdigit(*name) != 0; name++) { 2313 *c *= 10; 2314 *c += *name - '0'; 2315 if (*c > dsp_cmax) 2316 return (ENODEV); 2317 } 2318 2319 if (*name != '\0') 2320 return (ENODEV); 2321 2322 return (0); 2323} 2324 2325static void 2326dsp_clone(void *arg, 2327#if __FreeBSD_version >= 600034 2328 struct ucred *cred, 2329#endif 2330 char *name, int namelen, struct cdev **dev) 2331{ 2332 struct snddev_info *d; 2333 struct snd_clone_entry *ce; 2334 struct pcm_channel *c; 2335 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2336 char *devname, *devcmp, *devsep; 2337 2338 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2339 2340 if (*dev != NULL) 2341 return; 2342 2343 unit = -1; 2344 cunit = -1; 2345 devtype = -1; 2346 devhw = 0; 2347 devcmax = -1; 2348 tumax = -1; 2349 devname = NULL; 2350 devsep = NULL; 2351 2352 for (i = 0; unit == -1 && 2353 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2354 devtype = dsp_cdevs[i].type; 2355 devcmp = dsp_cdevs[i].name; 2356 devsep = dsp_cdevs[i].sep; 2357 devname = dsp_cdevs[i].alias; 2358 if (devname == NULL) 2359 devname = devcmp; 2360 devhw = dsp_cdevs[i].hw; 2361 devcmax = dsp_cdevs[i].max - 1; 2362 if (strcmp(name, devcmp) == 0) 2363 unit = snd_unit; 2364 else if (dsp_stdclone(name, devcmp, devsep, 2365 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2366 unit = -1; 2367 cunit = -1; 2368 } 2369 } 2370 2371 d = devclass_get_softc(pcm_devclass, unit); 2372 if (!PCM_REGISTERED(d) || d->clones == NULL) 2373 return; 2374 2375 /* XXX Need Giant magic entry ??? */ 2376 2377 PCM_LOCK(d); 2378 if (snd_clone_disabled(d->clones)) { 2379 PCM_UNLOCK(d); 2380 return; 2381 } 2382 2383 PCM_WAIT(d); 2384 PCM_ACQUIRE(d); 2385 PCM_UNLOCK(d); 2386 2387 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2388 2389 if (devhw != 0) { 2390 KASSERT(devcmax <= dsp_cmax, 2391 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2392 if (cunit > devcmax) { 2393 PCM_RELEASE_QUICK(d); 2394 return; 2395 } 2396 udcmask |= snd_c2unit(cunit); 2397 CHN_FOREACH(c, d, channels.pcm) { 2398 CHN_LOCK(c); 2399 if (c->unit != udcmask) { 2400 CHN_UNLOCK(c); 2401 continue; 2402 } 2403 CHN_UNLOCK(c); 2404 udcmask &= ~snd_c2unit(cunit); 2405 /* 2406 * Temporarily increase clone maxunit to overcome 2407 * vchan flexibility. 2408 * 2409 * # sysctl dev.pcm.0.play.vchans=256 2410 * dev.pcm.0.play.vchans: 1 -> 256 2411 * # cat /dev/zero > /dev/dsp0.vp255 & 2412 * [1] 17296 2413 * # sysctl dev.pcm.0.play.vchans=0 2414 * dev.pcm.0.play.vchans: 256 -> 1 2415 * # fg 2416 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2417 * ^C 2418 * # cat /dev/zero > /dev/dsp0.vp255 2419 * zsh: operation not supported: /dev/dsp0.vp255 2420 */ 2421 tumax = snd_clone_getmaxunit(d->clones); 2422 if (cunit > tumax) 2423 snd_clone_setmaxunit(d->clones, cunit); 2424 else 2425 tumax = -1; 2426 goto dsp_clone_alloc; 2427 } 2428 /* 2429 * Ok, so we're requesting unallocated vchan, but still 2430 * within maximum vchan limit. 2431 */ 2432 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2433 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2434 cunit < snd_maxautovchans) { 2435 udcmask &= ~snd_c2unit(cunit); 2436 tumax = snd_clone_getmaxunit(d->clones); 2437 if (cunit > tumax) 2438 snd_clone_setmaxunit(d->clones, cunit); 2439 else 2440 tumax = -1; 2441 goto dsp_clone_alloc; 2442 } 2443 PCM_RELEASE_QUICK(d); 2444 return; 2445 } 2446 2447dsp_clone_alloc: 2448 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2449 if (tumax != -1) 2450 snd_clone_setmaxunit(d->clones, tumax); 2451 if (ce != NULL) { 2452 udcmask |= snd_c2unit(cunit); 2453 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2454 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2455 devname, unit, devsep, cunit); 2456 snd_clone_register(ce, *dev); 2457 } 2458 2459 PCM_RELEASE_QUICK(d); 2460 2461 if (*dev != NULL) 2462 dev_ref(*dev); 2463} 2464 2465static void 2466dsp_sysinit(void *p) 2467{ 2468 if (dsp_ehtag != NULL) 2469 return; 2470 /* initialize unit numbering */ 2471 snd_unit_init(); 2472 dsp_umax = PCMMAXUNIT; 2473 dsp_cmax = PCMMAXCHAN; 2474 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2475} 2476 2477static void 2478dsp_sysuninit(void *p) 2479{ 2480 if (dsp_ehtag == NULL) 2481 return; 2482 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2483 dsp_ehtag = NULL; 2484} 2485 2486SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2487SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2488 2489char * 2490dsp_unit2name(char *buf, size_t len, int unit) 2491{ 2492 int i, dtype; 2493 2494 KASSERT(buf != NULL && len != 0, 2495 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2496 2497 dtype = snd_unit2d(unit); 2498 2499 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2500 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2501 continue; 2502 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2503 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2504 return (buf); 2505 } 2506 2507 return (NULL); 2508} 2509 2510/** 2511 * @brief Handler for SNDCTL_AUDIOINFO. 2512 * 2513 * Gathers information about the audio device specified in ai->dev. If 2514 * ai->dev == -1, then this function gathers information about the current 2515 * device. If the call comes in on a non-audio device and ai->dev == -1, 2516 * return EINVAL. 2517 * 2518 * This routine is supposed to go practically straight to the hardware, 2519 * getting capabilities directly from the sound card driver, side-stepping 2520 * the intermediate channel interface. 2521 * 2522 * Note, however, that the usefulness of this command is significantly 2523 * decreased when requesting info about any device other than the one serving 2524 * the request. While each snddev_channel refers to a specific device node, 2525 * the converse is *not* true. Currently, when a sound device node is opened, 2526 * the sound subsystem scans for an available audio channel (or channels, if 2527 * opened in read+write) and then assigns them to the si_drv[12] private 2528 * data fields. As a result, any information returned linking a channel to 2529 * a specific character device isn't necessarily accurate. 2530 * 2531 * @note 2532 * Calling threads must not hold any snddev_info or pcm_channel locks. 2533 * 2534 * @param dev device on which the ioctl was issued 2535 * @param ai ioctl request data container 2536 * 2537 * @retval 0 success 2538 * @retval EINVAL ai->dev specifies an invalid device 2539 * 2540 * @todo Verify correctness of Doxygen tags. ;) 2541 */ 2542int 2543dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2544{ 2545 struct pcmchan_caps *caps; 2546 struct pcm_channel *ch; 2547 struct snddev_info *d; 2548 uint32_t fmts; 2549 int i, nchan, *rates, minch, maxch; 2550 char *devname, buf[CHN_NAMELEN]; 2551 2552 /* 2553 * If probing the device that received the ioctl, make sure it's a 2554 * DSP device. (Users may use this ioctl with /dev/mixer and 2555 * /dev/midi.) 2556 */ 2557 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2558 return (EINVAL); 2559 2560 ch = NULL; 2561 devname = NULL; 2562 nchan = 0; 2563 bzero(buf, sizeof(buf)); 2564 2565 /* 2566 * Search for the requested audio device (channel). Start by 2567 * iterating over pcm devices. 2568 */ 2569 for (i = 0; pcm_devclass != NULL && 2570 i < devclass_get_maxunit(pcm_devclass); i++) { 2571 d = devclass_get_softc(pcm_devclass, i); 2572 if (!PCM_REGISTERED(d)) 2573 continue; 2574 2575 /* XXX Need Giant magic entry ??? */ 2576 2577 /* See the note in function docblock */ 2578 PCM_UNLOCKASSERT(d); 2579 PCM_LOCK(d); 2580 2581 CHN_FOREACH(ch, d, channels.pcm) { 2582 CHN_UNLOCKASSERT(ch); 2583 CHN_LOCK(ch); 2584 if (ai->dev == -1) { 2585 if (DSP_REGISTERED(d, i_dev) && 2586 (ch == PCM_RDCH(i_dev) || /* record ch */ 2587 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2588 devname = dsp_unit2name(buf, 2589 sizeof(buf), ch->unit); 2590 } 2591 } else if (ai->dev == nchan) { 2592 devname = dsp_unit2name(buf, sizeof(buf), 2593 ch->unit); 2594 } 2595 if (devname != NULL) 2596 break; 2597 CHN_UNLOCK(ch); 2598 ++nchan; 2599 } 2600 2601 if (devname != NULL) { 2602 /* 2603 * At this point, the following synchronization stuff 2604 * has happened: 2605 * - a specific PCM device is locked. 2606 * - a specific audio channel has been locked, so be 2607 * sure to unlock when exiting; 2608 */ 2609 2610 caps = chn_getcaps(ch); 2611 2612 /* 2613 * With all handles collected, zero out the user's 2614 * container and begin filling in its fields. 2615 */ 2616 bzero((void *)ai, sizeof(oss_audioinfo)); 2617 2618 ai->dev = nchan; 2619 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2620 2621 if ((ch->flags & CHN_F_BUSY) == 0) 2622 ai->busy = 0; 2623 else 2624 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2625 2626 /** 2627 * @note 2628 * @c cmd - OSSv4 docs: "Only supported under Linux at 2629 * this moment." Cop-out, I know, but I'll save 2630 * running around in the process table for later. 2631 * Is there a risk of leaking information? 2632 */ 2633 ai->pid = ch->pid; 2634 2635 /* 2636 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2637 * Note, however, that a single channel operates in 2638 * only one direction, so PCM_CAP_DUPLEX is out. 2639 */ 2640 /** 2641 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2642 * these in pcmchan::caps? 2643 */ 2644 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2645 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2646 2647 /* 2648 * Collect formats supported @b natively by the 2649 * device. Also determine min/max channels. (I.e., 2650 * mono, stereo, or both?) 2651 * 2652 * If any channel is stereo, maxch = 2; 2653 * if all channels are stereo, minch = 2, too; 2654 * if any channel is mono, minch = 1; 2655 * and if all channels are mono, maxch = 1. 2656 */ 2657 minch = 0; 2658 maxch = 0; 2659 fmts = 0; 2660 for (i = 0; caps->fmtlist[i]; i++) { 2661 fmts |= caps->fmtlist[i]; 2662 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2663 minch = (minch == 0) ? 2 : minch; 2664 maxch = 2; 2665 } else { 2666 minch = 1; 2667 maxch = (maxch == 0) ? 1 : maxch; 2668 } 2669 } 2670 2671 if (ch->direction == PCMDIR_PLAY) 2672 ai->oformats = fmts; 2673 else 2674 ai->iformats = fmts; 2675 2676 /** 2677 * @note 2678 * @c magic - OSSv4 docs: "Reserved for internal use 2679 * by OSS." 2680 * 2681 * @par 2682 * @c card_number - OSSv4 docs: "Number of the sound 2683 * card where this device belongs or -1 if this 2684 * information is not available. Applications 2685 * should normally not use this field for any 2686 * purpose." 2687 */ 2688 ai->card_number = -1; 2689 /** 2690 * @todo @c song_name - depends first on 2691 * SNDCTL_[GS]ETSONG @todo @c label - depends 2692 * on SNDCTL_[GS]ETLABEL 2693 * @todo @c port_number - routing information? 2694 */ 2695 ai->port_number = -1; 2696 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2697 /** 2698 * @note 2699 * @c real_device - OSSv4 docs: "Obsolete." 2700 */ 2701 ai->real_device = -1; 2702 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2703 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2704 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2705 /** 2706 * @note 2707 * @c flags - OSSv4 docs: "Reserved for future use." 2708 * 2709 * @note 2710 * @c binding - OSSv4 docs: "Reserved for future use." 2711 * 2712 * @todo @c handle - haven't decided how to generate 2713 * this yet; bus, vendor, device IDs? 2714 */ 2715 ai->min_rate = caps->minspeed; 2716 ai->max_rate = caps->maxspeed; 2717 2718 ai->min_channels = minch; 2719 ai->max_channels = maxch; 2720 2721 ai->nrates = chn_getrates(ch, &rates); 2722 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2723 ai->nrates = OSS_MAX_SAMPLE_RATES; 2724 2725 for (i = 0; i < ai->nrates; i++) 2726 ai->rates[i] = rates[i]; 2727 2728 ai->next_play_engine = 0; 2729 ai->next_rec_engine = 0; 2730 2731 CHN_UNLOCK(ch); 2732 } 2733 2734 PCM_UNLOCK(d); 2735 2736 if (devname != NULL) 2737 return (0); 2738 } 2739 2740 /* Exhausted the search -- nothing is locked, so return. */ 2741 return (EINVAL); 2742} 2743 2744/** 2745 * @brief Assigns a PCM channel to a sync group. 2746 * 2747 * Sync groups are used to enable audio operations on multiple devices 2748 * simultaneously. They may be used with any number of devices and may 2749 * span across applications. Devices are added to groups with 2750 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2751 * SNDCTL_DSP_SYNCSTART ioctl. 2752 * 2753 * If the @c id field of the @c group parameter is set to zero, then a new 2754 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2755 * the group specified. 2756 * 2757 * @todo As far as memory allocation, should we assume that things are 2758 * okay and allocate with M_WAITOK before acquiring channel locks, 2759 * freeing later if not? 2760 * 2761 * @param wrch output channel associated w/ device (if any) 2762 * @param rdch input channel associated w/ device (if any) 2763 * @param group Sync group parameters 2764 * 2765 * @retval 0 success 2766 * @retval non-zero error to be propagated upstream 2767 */ 2768static int 2769dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2770{ 2771 struct pcmchan_syncmember *smrd, *smwr; 2772 struct pcmchan_syncgroup *sg; 2773 int ret, sg_ids[3]; 2774 2775 smrd = NULL; 2776 smwr = NULL; 2777 sg = NULL; 2778 ret = 0; 2779 2780 /* 2781 * Free_unr() may sleep, so store released syncgroup IDs until after 2782 * all locks are released. 2783 */ 2784 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2785 2786 PCM_SG_LOCK(); 2787 2788 /* 2789 * - Insert channel(s) into group's member list. 2790 * - Set CHN_F_NOTRIGGER on channel(s). 2791 * - Stop channel(s). 2792 */ 2793 2794 /* 2795 * If device's channels are already mapped to a group, unmap them. 2796 */ 2797 if (wrch) { 2798 CHN_LOCK(wrch); 2799 sg_ids[0] = chn_syncdestroy(wrch); 2800 } 2801 2802 if (rdch) { 2803 CHN_LOCK(rdch); 2804 sg_ids[1] = chn_syncdestroy(rdch); 2805 } 2806 2807 /* 2808 * Verify that mode matches character device properites. 2809 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2810 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2811 */ 2812 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2813 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2814 ret = EINVAL; 2815 goto out; 2816 } 2817 2818 /* 2819 * An id of zero indicates the user wants to create a new 2820 * syncgroup. 2821 */ 2822 if (group->id == 0) { 2823 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2824 if (sg != NULL) { 2825 SLIST_INIT(&sg->members); 2826 sg->id = alloc_unr(pcmsg_unrhdr); 2827 2828 group->id = sg->id; 2829 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2830 } else 2831 ret = ENOMEM; 2832 } else { 2833 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2834 if (sg->id == group->id) 2835 break; 2836 } 2837 if (sg == NULL) 2838 ret = EINVAL; 2839 } 2840 2841 /* Couldn't create or find a syncgroup. Fail. */ 2842 if (sg == NULL) 2843 goto out; 2844 2845 /* 2846 * Allocate a syncmember, assign it and a channel together, and 2847 * insert into syncgroup. 2848 */ 2849 if (group->mode & PCM_ENABLE_INPUT) { 2850 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2851 if (smrd == NULL) { 2852 ret = ENOMEM; 2853 goto out; 2854 } 2855 2856 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2857 smrd->parent = sg; 2858 smrd->ch = rdch; 2859 2860 chn_abort(rdch); 2861 rdch->flags |= CHN_F_NOTRIGGER; 2862 rdch->sm = smrd; 2863 } 2864 2865 if (group->mode & PCM_ENABLE_OUTPUT) { 2866 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2867 if (smwr == NULL) { 2868 ret = ENOMEM; 2869 goto out; 2870 } 2871 2872 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2873 smwr->parent = sg; 2874 smwr->ch = wrch; 2875 2876 chn_abort(wrch); 2877 wrch->flags |= CHN_F_NOTRIGGER; 2878 wrch->sm = smwr; 2879 } 2880 2881 2882out: 2883 if (ret != 0) { 2884 if (smrd != NULL) 2885 free(smrd, M_DEVBUF); 2886 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2887 sg_ids[2] = sg->id; 2888 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2889 free(sg, M_DEVBUF); 2890 } 2891 2892 if (wrch) 2893 wrch->sm = NULL; 2894 if (rdch) 2895 rdch->sm = NULL; 2896 } 2897 2898 if (wrch) 2899 CHN_UNLOCK(wrch); 2900 if (rdch) 2901 CHN_UNLOCK(rdch); 2902 2903 PCM_SG_UNLOCK(); 2904 2905 if (sg_ids[0]) 2906 free_unr(pcmsg_unrhdr, sg_ids[0]); 2907 if (sg_ids[1]) 2908 free_unr(pcmsg_unrhdr, sg_ids[1]); 2909 if (sg_ids[2]) 2910 free_unr(pcmsg_unrhdr, sg_ids[2]); 2911 2912 return (ret); 2913} 2914 2915/** 2916 * @brief Launch a sync group into action 2917 * 2918 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2919 * iterates over all members, triggering them along the way. 2920 * 2921 * @note Caller must not hold any channel locks. 2922 * 2923 * @param sg_id sync group identifier 2924 * 2925 * @retval 0 success 2926 * @retval non-zero error worthy of propagating upstream to user 2927 */ 2928static int 2929dsp_oss_syncstart(int sg_id) 2930{ 2931 struct pcmchan_syncmember *sm, *sm_tmp; 2932 struct pcmchan_syncgroup *sg; 2933 struct pcm_channel *c; 2934 int ret, needlocks; 2935 2936 /* Get the synclists lock */ 2937 PCM_SG_LOCK(); 2938 2939 do { 2940 ret = 0; 2941 needlocks = 0; 2942 2943 /* Search for syncgroup by ID */ 2944 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2945 if (sg->id == sg_id) 2946 break; 2947 } 2948 2949 /* Return EINVAL if not found */ 2950 if (sg == NULL) { 2951 ret = EINVAL; 2952 break; 2953 } 2954 2955 /* Any removals resulting in an empty group should've handled this */ 2956 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2957 2958 /* 2959 * Attempt to lock all member channels - if any are already 2960 * locked, unlock those acquired, sleep for a bit, and try 2961 * again. 2962 */ 2963 SLIST_FOREACH(sm, &sg->members, link) { 2964 if (CHN_TRYLOCK(sm->ch) == 0) { 2965 int timo = hz * 5/1000; 2966 if (timo < 1) 2967 timo = 1; 2968 2969 /* Release all locked channels so far, retry */ 2970 SLIST_FOREACH(sm_tmp, &sg->members, link) { 2971 /* sm is the member already locked */ 2972 if (sm == sm_tmp) 2973 break; 2974 CHN_UNLOCK(sm_tmp->ch); 2975 } 2976 2977 /** @todo Is PRIBIO correct/ */ 2978 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 2979 PRIBIO | PCATCH, "pcmsg", timo); 2980 if (ret == EINTR || ret == ERESTART) 2981 break; 2982 2983 needlocks = 1; 2984 ret = 0; /* Assumes ret == EAGAIN... */ 2985 } 2986 } 2987 } while (needlocks && ret == 0); 2988 2989 /* Proceed only if no errors encountered. */ 2990 if (ret == 0) { 2991 /* Launch channels */ 2992 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 2993 SLIST_REMOVE_HEAD(&sg->members, link); 2994 2995 c = sm->ch; 2996 c->sm = NULL; 2997 chn_start(c, 1); 2998 c->flags &= ~CHN_F_NOTRIGGER; 2999 CHN_UNLOCK(c); 3000 3001 free(sm, M_DEVBUF); 3002 } 3003 3004 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3005 free(sg, M_DEVBUF); 3006 } 3007 3008 PCM_SG_UNLOCK(); 3009 3010 /* 3011 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3012 * first. 3013 */ 3014 if (ret == 0) 3015 free_unr(pcmsg_unrhdr, sg_id); 3016 3017 return (ret); 3018} 3019 3020/** 3021 * @brief Handler for SNDCTL_DSP_POLICY 3022 * 3023 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3024 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3025 * specifying those two parameters, s/he simply selects a number from 0..10 3026 * which corresponds to a buffer size. Smaller numbers request smaller 3027 * buffers with lower latencies (at greater overhead from more frequent 3028 * interrupts), while greater numbers behave in the opposite manner. 3029 * 3030 * The 4Front spec states that a value of 5 should be the default. However, 3031 * this implementation deviates slightly by using a linear scale without 3032 * consulting drivers. I.e., even though drivers may have different default 3033 * buffer sizes, a policy argument of 5 will have the same result across 3034 * all drivers. 3035 * 3036 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3037 * more information. 3038 * 3039 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3040 * work with hardware drivers directly. 3041 * 3042 * @note PCM channel arguments must not be locked by caller. 3043 * 3044 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3045 * @param rdch " recording channel (optional; may be NULL) 3046 * @param policy Integer from [0:10] 3047 * 3048 * @retval 0 constant (for now) 3049 */ 3050static int 3051dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3052{ 3053 int ret; 3054 3055 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3056 return (EIO); 3057 3058 /* Default: success */ 3059 ret = 0; 3060 3061 if (rdch) { 3062 CHN_LOCK(rdch); 3063 ret = chn_setlatency(rdch, policy); 3064 CHN_UNLOCK(rdch); 3065 } 3066 3067 if (wrch && ret == 0) { 3068 CHN_LOCK(wrch); 3069 ret = chn_setlatency(wrch, policy); 3070 CHN_UNLOCK(wrch); 3071 } 3072 3073 if (ret) 3074 ret = EIO; 3075 3076 return (ret); 3077} 3078 3079/** 3080 * @brief Enable or disable "cooked" mode 3081 * 3082 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3083 * is the default, the sound system handles rate and format conversions 3084 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3085 * operates with 44100Hz/16bit/signed samples). 3086 * 3087 * Disabling cooked mode is intended for applications wanting to mmap() 3088 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3089 * feeder architecture, presumably to gain as much control over audio 3090 * hardware as possible. 3091 * 3092 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3093 * for more details. 3094 * 3095 * @param wrch playback channel (optional; may be NULL) 3096 * @param rdch recording channel (optional; may be NULL) 3097 * @param enabled 0 = raw mode, 1 = cooked mode 3098 * 3099 * @retval EINVAL Operation not yet supported. 3100 */ 3101static int 3102dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3103{ 3104 3105 /* 3106 * XXX I just don't get it. Why don't they call it 3107 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3108 * This is just plain so confusing, incoherent, 3109 * <insert any non-printable characters here>. 3110 */ 3111 if (!(enabled == 1 || enabled == 0)) 3112 return (EINVAL); 3113 3114 /* 3115 * I won't give in. I'm inverting its logic here and now. 3116 * Brag all you want, but "BITPERFECT" should be the better 3117 * term here. 3118 */ 3119 enabled ^= 0x00000001; 3120 3121 if (wrch != NULL) { 3122 CHN_LOCK(wrch); 3123 wrch->flags &= ~CHN_F_BITPERFECT; 3124 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3125 CHN_UNLOCK(wrch); 3126 } 3127 3128 if (rdch != NULL) { 3129 CHN_LOCK(rdch); 3130 rdch->flags &= ~CHN_F_BITPERFECT; 3131 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3132 CHN_UNLOCK(rdch); 3133 } 3134 3135 return (0); 3136} 3137 3138/** 3139 * @brief Retrieve channel interleaving order 3140 * 3141 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3142 * 3143 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3144 * for more details. 3145 * 3146 * @note As the ioctl definition is still under construction, FreeBSD 3147 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3148 * 3149 * @param wrch playback channel (optional; may be NULL) 3150 * @param rdch recording channel (optional; may be NULL) 3151 * @param map channel map (result will be stored there) 3152 * 3153 * @retval EINVAL Operation not yet supported. 3154 */ 3155static int 3156dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3157{ 3158 struct pcm_channel *ch; 3159 int ret; 3160 3161 ch = (wrch != NULL) ? wrch : rdch; 3162 if (ch != NULL) { 3163 CHN_LOCK(ch); 3164 ret = chn_oss_getorder(ch, map); 3165 CHN_UNLOCK(ch); 3166 } else 3167 ret = EINVAL; 3168 3169 return (ret); 3170} 3171 3172/** 3173 * @brief Specify channel interleaving order 3174 * 3175 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3176 * 3177 * @note As the ioctl definition is still under construction, FreeBSD 3178 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3179 * 3180 * @param wrch playback channel (optional; may be NULL) 3181 * @param rdch recording channel (optional; may be NULL) 3182 * @param map channel map 3183 * 3184 * @retval EINVAL Operation not yet supported. 3185 */ 3186static int 3187dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3188{ 3189 int ret; 3190 3191 ret = 0; 3192 3193 if (wrch != NULL) { 3194 CHN_LOCK(wrch); 3195 ret = chn_oss_setorder(wrch, map); 3196 CHN_UNLOCK(wrch); 3197 } 3198 3199 if (ret == 0 && rdch != NULL) { 3200 CHN_LOCK(rdch); 3201 ret = chn_oss_setorder(rdch, map); 3202 CHN_UNLOCK(rdch); 3203 } 3204 3205 return (ret); 3206} 3207 3208static int 3209dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3210 int *mask) 3211{ 3212 struct pcm_channel *ch; 3213 uint32_t chnmask; 3214 int ret; 3215 3216 chnmask = 0; 3217 ch = (wrch != NULL) ? wrch : rdch; 3218 3219 if (ch != NULL) { 3220 CHN_LOCK(ch); 3221 ret = chn_oss_getmask(ch, &chnmask); 3222 CHN_UNLOCK(ch); 3223 } else 3224 ret = EINVAL; 3225 3226 if (ret == 0) 3227 *mask = chnmask; 3228 3229 return (ret); 3230} 3231 3232#ifdef OSSV4_EXPERIMENT 3233/** 3234 * @brief Retrieve an audio device's label 3235 * 3236 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3237 * 3238 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3239 * for more details. 3240 * 3241 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3242 * consoles) can show variable "labels" for certain controls. By default 3243 * the application name (say quake) is shown as the label but 3244 * applications may change the labels themselves." 3245 * 3246 * @note As the ioctl definition is still under construction, FreeBSD 3247 * does not currently support @c SNDCTL_GETLABEL. 3248 * 3249 * @param wrch playback channel (optional; may be NULL) 3250 * @param rdch recording channel (optional; may be NULL) 3251 * @param label label gets copied here 3252 * 3253 * @retval EINVAL Operation not yet supported. 3254 */ 3255static int 3256dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3257{ 3258 return (EINVAL); 3259} 3260 3261/** 3262 * @brief Specify an audio device's label 3263 * 3264 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3265 * comments for @c dsp_oss_getlabel immediately above. 3266 * 3267 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3268 * for more details. 3269 * 3270 * @note As the ioctl definition is still under construction, FreeBSD 3271 * does not currently support SNDCTL_SETLABEL. 3272 * 3273 * @param wrch playback channel (optional; may be NULL) 3274 * @param rdch recording channel (optional; may be NULL) 3275 * @param label label gets copied from here 3276 * 3277 * @retval EINVAL Operation not yet supported. 3278 */ 3279static int 3280dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3281{ 3282 return (EINVAL); 3283} 3284 3285/** 3286 * @brief Retrieve name of currently played song 3287 * 3288 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3289 * tell the system the name of the currently playing song, which would be 3290 * visible in @c /dev/sndstat. 3291 * 3292 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3293 * for more details. 3294 * 3295 * @note As the ioctl definition is still under construction, FreeBSD 3296 * does not currently support SNDCTL_GETSONG. 3297 * 3298 * @param wrch playback channel (optional; may be NULL) 3299 * @param rdch recording channel (optional; may be NULL) 3300 * @param song song name gets copied here 3301 * 3302 * @retval EINVAL Operation not yet supported. 3303 */ 3304static int 3305dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3306{ 3307 return (EINVAL); 3308} 3309 3310/** 3311 * @brief Retrieve name of currently played song 3312 * 3313 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3314 * tell the system the name of the currently playing song, which would be 3315 * visible in @c /dev/sndstat. 3316 * 3317 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3318 * for more details. 3319 * 3320 * @note As the ioctl definition is still under construction, FreeBSD 3321 * does not currently support SNDCTL_SETSONG. 3322 * 3323 * @param wrch playback channel (optional; may be NULL) 3324 * @param rdch recording channel (optional; may be NULL) 3325 * @param song song name gets copied from here 3326 * 3327 * @retval EINVAL Operation not yet supported. 3328 */ 3329static int 3330dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3331{ 3332 return (EINVAL); 3333} 3334 3335/** 3336 * @brief Rename a device 3337 * 3338 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3339 * 3340 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3341 * more details. 3342 * 3343 * From Hannu@4Front: "This call is used to change the device name 3344 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3345 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3346 * name depending on the current context (for example 'OSS virtual wave table 3347 * synth' or 'VoIP link to London')." 3348 * 3349 * @note As the ioctl definition is still under construction, FreeBSD 3350 * does not currently support SNDCTL_SETNAME. 3351 * 3352 * @param wrch playback channel (optional; may be NULL) 3353 * @param rdch recording channel (optional; may be NULL) 3354 * @param name new device name gets copied from here 3355 * 3356 * @retval EINVAL Operation not yet supported. 3357 */ 3358static int 3359dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3360{ 3361 return (EINVAL); 3362} 3363#endif /* !OSSV4_EXPERIMENT */ 3364