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: stable/10/sys/dev/sound/pcm/dsp.c 358879 2020-03-11 08:26:11Z hselasky $"); 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 51static int dsp_basename_clone = 1; 52SYSCTL_INT(_hw_snd, OID_AUTO, basename_clone, CTLFLAG_RWTUN, 53 &dsp_basename_clone, 0, 54 "DSP basename cloning (0: Disable; 1: Enabled)"); 55TUNABLE_INT("hw.snd.basename_clone", &dsp_basename_clone); 56 57struct dsp_cdevinfo { 58 struct pcm_channel *rdch, *wrch; 59 struct pcm_channel *volch; 60 int busy, simplex; 61 TAILQ_ENTRY(dsp_cdevinfo) link; 62}; 63 64#define PCM_RDCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->rdch) 65#define PCM_WRCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->wrch) 66#define PCM_VOLCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->volch) 67#define PCM_SIMPLEX(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->simplex) 68 69#define DSP_CDEVINFO_CACHESIZE 8 70 71#define DSP_REGISTERED(x, y) (PCM_REGISTERED(x) && \ 72 (y) != NULL && (y)->si_drv1 != NULL) 73 74#define OLDPCM_IOCTL 75 76static d_open_t dsp_open; 77static d_close_t dsp_close; 78static d_read_t dsp_read; 79static d_write_t dsp_write; 80static d_ioctl_t dsp_ioctl; 81static d_poll_t dsp_poll; 82static d_mmap_t dsp_mmap; 83static d_mmap_single_t dsp_mmap_single; 84 85struct cdevsw dsp_cdevsw = { 86 .d_version = D_VERSION, 87 .d_open = dsp_open, 88 .d_close = dsp_close, 89 .d_read = dsp_read, 90 .d_write = dsp_write, 91 .d_ioctl = dsp_ioctl, 92 .d_poll = dsp_poll, 93 .d_mmap = dsp_mmap, 94 .d_mmap_single = dsp_mmap_single, 95 .d_name = "dsp", 96}; 97 98static eventhandler_tag dsp_ehtag = NULL; 99static int dsp_umax = -1; 100static int dsp_cmax = -1; 101 102static int dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group); 103static int dsp_oss_syncstart(int sg_id); 104static int dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy); 105static int dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled); 106static int dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 107static int dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 108static int dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, int *mask); 109#ifdef OSSV4_EXPERIMENT 110static int dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 111static int dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 112static int dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 113static int dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 114static int dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name); 115#endif 116 117static struct snddev_info * 118dsp_get_info(struct cdev *dev) 119{ 120 return (devclass_get_softc(pcm_devclass, PCMUNIT(dev))); 121} 122 123static uint32_t 124dsp_get_flags(struct cdev *dev) 125{ 126 device_t bdev; 127 128 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 129 130 return ((bdev != NULL) ? pcm_getflags(bdev) : 0xffffffff); 131} 132 133static void 134dsp_set_flags(struct cdev *dev, uint32_t flags) 135{ 136 device_t bdev; 137 138 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 139 140 if (bdev != NULL) 141 pcm_setflags(bdev, flags); 142} 143 144/* 145 * return the channels associated with an open device instance. 146 * lock channels specified. 147 */ 148static int 149getchns(struct cdev *dev, struct pcm_channel **rdch, struct pcm_channel **wrch, 150 uint32_t prio) 151{ 152 struct snddev_info *d; 153 struct pcm_channel *ch; 154 uint32_t flags; 155 156 if (PCM_SIMPLEX(dev) != 0) { 157 d = dsp_get_info(dev); 158 if (!PCM_REGISTERED(d)) 159 return (ENXIO); 160 PCM_LOCK(d); 161 PCM_WAIT(d); 162 PCM_ACQUIRE(d); 163 /* 164 * Note: order is important - 165 * pcm flags -> prio query flags -> wild guess 166 */ 167 ch = NULL; 168 flags = dsp_get_flags(dev); 169 if (flags & SD_F_PRIO_WR) { 170 ch = PCM_RDCH(dev); 171 PCM_RDCH(dev) = NULL; 172 } else if (flags & SD_F_PRIO_RD) { 173 ch = PCM_WRCH(dev); 174 PCM_WRCH(dev) = NULL; 175 } else if (prio & SD_F_PRIO_WR) { 176 ch = PCM_RDCH(dev); 177 PCM_RDCH(dev) = NULL; 178 flags |= SD_F_PRIO_WR; 179 } else if (prio & SD_F_PRIO_RD) { 180 ch = PCM_WRCH(dev); 181 PCM_WRCH(dev) = NULL; 182 flags |= SD_F_PRIO_RD; 183 } else if (PCM_WRCH(dev) != NULL) { 184 ch = PCM_RDCH(dev); 185 PCM_RDCH(dev) = NULL; 186 flags |= SD_F_PRIO_WR; 187 } else if (PCM_RDCH(dev) != NULL) { 188 ch = PCM_WRCH(dev); 189 PCM_WRCH(dev) = NULL; 190 flags |= SD_F_PRIO_RD; 191 } 192 PCM_SIMPLEX(dev) = 0; 193 dsp_set_flags(dev, flags); 194 if (ch != NULL) { 195 CHN_LOCK(ch); 196 pcm_chnref(ch, -1); 197 pcm_chnrelease(ch); 198 } 199 PCM_RELEASE(d); 200 PCM_UNLOCK(d); 201 } 202 203 *rdch = PCM_RDCH(dev); 204 *wrch = PCM_WRCH(dev); 205 206 if (*rdch != NULL && (prio & SD_F_PRIO_RD)) 207 CHN_LOCK(*rdch); 208 if (*wrch != NULL && (prio & SD_F_PRIO_WR)) 209 CHN_LOCK(*wrch); 210 211 return (0); 212} 213 214/* unlock specified channels */ 215static void 216relchns(struct cdev *dev, struct pcm_channel *rdch, struct pcm_channel *wrch, 217 uint32_t prio) 218{ 219 if (wrch != NULL && (prio & SD_F_PRIO_WR)) 220 CHN_UNLOCK(wrch); 221 if (rdch != NULL && (prio & SD_F_PRIO_RD)) 222 CHN_UNLOCK(rdch); 223} 224 225static void 226dsp_cdevinfo_alloc(struct cdev *dev, 227 struct pcm_channel *rdch, struct pcm_channel *wrch, 228 struct pcm_channel *volch) 229{ 230 struct snddev_info *d; 231 struct dsp_cdevinfo *cdi; 232 int simplex; 233 234 d = dsp_get_info(dev); 235 236 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 == NULL && 237 ((rdch == NULL && wrch == NULL) || rdch != wrch), 238 ("bogus %s(), what are you trying to accomplish here?", __func__)); 239 PCM_BUSYASSERT(d); 240 PCM_LOCKASSERT(d); 241 242 simplex = (dsp_get_flags(dev) & SD_F_SIMPLEX) ? 1 : 0; 243 244 /* 245 * Scan for free instance entry and put it into the end of list. 246 * Create new one if necessary. 247 */ 248 TAILQ_FOREACH(cdi, &d->dsp_cdevinfo_pool, link) { 249 if (cdi->busy != 0) 250 break; 251 cdi->rdch = rdch; 252 cdi->wrch = wrch; 253 cdi->volch = volch; 254 cdi->simplex = simplex; 255 cdi->busy = 1; 256 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 257 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 258 dev->si_drv1 = cdi; 259 return; 260 } 261 PCM_UNLOCK(d); 262 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 263 PCM_LOCK(d); 264 cdi->rdch = rdch; 265 cdi->wrch = wrch; 266 cdi->volch = volch; 267 cdi->simplex = simplex; 268 cdi->busy = 1; 269 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 270 dev->si_drv1 = cdi; 271} 272 273static void 274dsp_cdevinfo_free(struct cdev *dev) 275{ 276 struct snddev_info *d; 277 struct dsp_cdevinfo *cdi, *tmp; 278 uint32_t flags; 279 int i; 280 281 d = dsp_get_info(dev); 282 283 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 != NULL && 284 PCM_RDCH(dev) == NULL && PCM_WRCH(dev) == NULL && 285 PCM_VOLCH(dev) == NULL, 286 ("bogus %s(), what are you trying to accomplish here?", __func__)); 287 PCM_BUSYASSERT(d); 288 PCM_LOCKASSERT(d); 289 290 cdi = dev->si_drv1; 291 dev->si_drv1 = NULL; 292 cdi->rdch = NULL; 293 cdi->wrch = NULL; 294 cdi->volch = NULL; 295 cdi->simplex = 0; 296 cdi->busy = 0; 297 298 /* 299 * Once it is free, move it back to the beginning of list for 300 * faster new entry allocation. 301 */ 302 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 303 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 304 305 /* 306 * Scan the list, cache free entries up to DSP_CDEVINFO_CACHESIZE. 307 * Reset simplex flags. 308 */ 309 flags = dsp_get_flags(dev) & ~SD_F_PRIO_SET; 310 i = DSP_CDEVINFO_CACHESIZE; 311 TAILQ_FOREACH_SAFE(cdi, &d->dsp_cdevinfo_pool, link, tmp) { 312 if (cdi->busy != 0) { 313 if (cdi->simplex == 0) { 314 if (cdi->rdch != NULL) 315 flags |= SD_F_PRIO_RD; 316 if (cdi->wrch != NULL) 317 flags |= SD_F_PRIO_WR; 318 } 319 } else { 320 if (i == 0) { 321 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 322 free(cdi, M_DEVBUF); 323 } else 324 i--; 325 } 326 } 327 dsp_set_flags(dev, flags); 328} 329 330void 331dsp_cdevinfo_init(struct snddev_info *d) 332{ 333 struct dsp_cdevinfo *cdi; 334 int i; 335 336 KASSERT(d != NULL, ("NULL snddev_info")); 337 PCM_BUSYASSERT(d); 338 PCM_UNLOCKASSERT(d); 339 340 TAILQ_INIT(&d->dsp_cdevinfo_pool); 341 for (i = 0; i < DSP_CDEVINFO_CACHESIZE; i++) { 342 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 343 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 344 } 345} 346 347void 348dsp_cdevinfo_flush(struct snddev_info *d) 349{ 350 struct dsp_cdevinfo *cdi, *tmp; 351 352 KASSERT(d != NULL, ("NULL snddev_info")); 353 PCM_BUSYASSERT(d); 354 PCM_UNLOCKASSERT(d); 355 356 cdi = TAILQ_FIRST(&d->dsp_cdevinfo_pool); 357 while (cdi != NULL) { 358 tmp = TAILQ_NEXT(cdi, link); 359 free(cdi, M_DEVBUF); 360 cdi = tmp; 361 } 362 TAILQ_INIT(&d->dsp_cdevinfo_pool); 363} 364 365/* duplex / simplex cdev type */ 366enum { 367 DSP_CDEV_TYPE_RDONLY, /* simplex read-only (record) */ 368 DSP_CDEV_TYPE_WRONLY, /* simplex write-only (play) */ 369 DSP_CDEV_TYPE_RDWR /* duplex read, write, or both */ 370}; 371 372enum { 373 DSP_CDEV_VOLCTL_NONE, 374 DSP_CDEV_VOLCTL_READ, 375 DSP_CDEV_VOLCTL_WRITE 376}; 377 378#define DSP_F_VALID(x) ((x) & (FREAD | FWRITE)) 379#define DSP_F_DUPLEX(x) (((x) & (FREAD | FWRITE)) == (FREAD | FWRITE)) 380#define DSP_F_SIMPLEX(x) (!DSP_F_DUPLEX(x)) 381#define DSP_F_READ(x) ((x) & FREAD) 382#define DSP_F_WRITE(x) ((x) & FWRITE) 383 384static const struct { 385 int type; 386 char *name; 387 char *sep; 388 char *alias; 389 int use_sep; 390 int hw; 391 int max; 392 int volctl; 393 uint32_t fmt, spd; 394 int query; 395} dsp_cdevs[] = { 396 { SND_DEV_DSP, "dsp", ".", NULL, 0, 0, 0, 0, 397 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 398 DSP_CDEV_TYPE_RDWR }, 399 { SND_DEV_AUDIO, "audio", ".", NULL, 0, 0, 0, 0, 400 SND_FORMAT(AFMT_MU_LAW, 1, 0), DSP_DEFAULT_SPEED, 401 DSP_CDEV_TYPE_RDWR }, 402 { SND_DEV_DSP16, "dspW", ".", NULL, 0, 0, 0, 0, 403 SND_FORMAT(AFMT_S16_LE, 1, 0), DSP_DEFAULT_SPEED, 404 DSP_CDEV_TYPE_RDWR }, 405 { SND_DEV_DSPHW_PLAY, "dsp", ".p", NULL, 1, 1, SND_MAXHWCHAN, 1, 406 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 407 { SND_DEV_DSPHW_VPLAY, "dsp", ".vp", NULL, 1, 1, SND_MAXVCHANS, 1, 408 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 409 { SND_DEV_DSPHW_REC, "dsp", ".r", NULL, 1, 1, SND_MAXHWCHAN, 1, 410 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 411 { SND_DEV_DSPHW_VREC, "dsp", ".vr", NULL, 1, 1, SND_MAXVCHANS, 1, 412 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 413 { SND_DEV_DSPHW_CD, "dspcd", ".", NULL, 0, 0, 0, 0, 414 SND_FORMAT(AFMT_S16_LE, 2, 0), 44100, DSP_CDEV_TYPE_RDWR }, 415 /* Low priority, OSSv4 aliases. */ 416 { SND_DEV_DSP, "dsp_ac3", ".", "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_mmap", ".", "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_multich", ".", "dsp", 0, 0, 0, 0, 423 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 424 DSP_CDEV_TYPE_RDWR }, 425 { SND_DEV_DSP, "dsp_spdifout", ".", "dsp", 0, 0, 0, 0, 426 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 427 DSP_CDEV_TYPE_RDWR }, 428 { SND_DEV_DSP, "dsp_spdifin", ".", "dsp", 0, 0, 0, 0, 429 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 430 DSP_CDEV_TYPE_RDWR }, 431}; 432 433#define DSP_FIXUP_ERROR() do { \ 434 prio = dsp_get_flags(i_dev); \ 435 if (!DSP_F_VALID(flags)) \ 436 error = EINVAL; \ 437 if (!DSP_F_DUPLEX(flags) && \ 438 ((DSP_F_READ(flags) && d->reccount == 0) || \ 439 (DSP_F_WRITE(flags) && d->playcount == 0))) \ 440 error = ENOTSUP; \ 441 else if (!DSP_F_DUPLEX(flags) && (prio & SD_F_SIMPLEX) && \ 442 ((DSP_F_READ(flags) && (prio & SD_F_PRIO_WR)) || \ 443 (DSP_F_WRITE(flags) && (prio & SD_F_PRIO_RD)))) \ 444 error = EBUSY; \ 445 else if (DSP_REGISTERED(d, i_dev)) \ 446 error = EBUSY; \ 447} while (0) 448 449static int 450dsp_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 451{ 452 struct pcm_channel *rdch, *wrch; 453 struct snddev_info *d; 454 uint32_t fmt, spd, prio, volctl; 455 int i, error, rderror, wrerror, devtype, wdevunit, rdevunit; 456 457 /* Kind of impossible.. */ 458 if (i_dev == NULL || td == NULL) 459 return (ENODEV); 460 461 d = dsp_get_info(i_dev); 462 if (PCM_DETACHING(d) || !PCM_REGISTERED(d)) 463 return (EBADF); 464 465 PCM_GIANT_ENTER(d); 466 467 /* Lock snddev so nobody else can monkey with it. */ 468 PCM_LOCK(d); 469 PCM_WAIT(d); 470 471 /* 472 * Try to acquire cloned device before someone else pick it. 473 * ENODEV means this is not a cloned droids. 474 */ 475 error = snd_clone_acquire(i_dev); 476 if (!(error == 0 || error == ENODEV)) { 477 DSP_FIXUP_ERROR(); 478 PCM_UNLOCK(d); 479 PCM_GIANT_EXIT(d); 480 return (error); 481 } 482 483 error = 0; 484 DSP_FIXUP_ERROR(); 485 486 if (error != 0) { 487 (void)snd_clone_release(i_dev); 488 PCM_UNLOCK(d); 489 PCM_GIANT_EXIT(d); 490 return (error); 491 } 492 493 /* 494 * That is just enough. Acquire and unlock pcm lock so 495 * the other will just have to wait until we finish doing 496 * everything. 497 */ 498 PCM_ACQUIRE(d); 499 PCM_UNLOCK(d); 500 501 devtype = PCMDEV(i_dev); 502 wdevunit = -1; 503 rdevunit = -1; 504 fmt = 0; 505 spd = 0; 506 volctl = DSP_CDEV_VOLCTL_NONE; 507 508 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 509 if (devtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 510 continue; 511 /* 512 * Volume control only valid for DSPHW devices, 513 * and it must be opened in opposite direction be it 514 * simplex or duplex. Anything else will be handled 515 * as usual. 516 */ 517 if (dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY) { 518 if (dsp_cdevs[i].volctl != 0 && 519 DSP_F_READ(flags)) { 520 volctl = DSP_CDEV_VOLCTL_WRITE; 521 flags &= ~FREAD; 522 flags |= FWRITE; 523 } 524 if (DSP_F_READ(flags)) { 525 (void)snd_clone_release(i_dev); 526 PCM_RELEASE_QUICK(d); 527 PCM_GIANT_EXIT(d); 528 return (ENOTSUP); 529 } 530 wdevunit = dev2unit(i_dev); 531 } else if (dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY) { 532 if (dsp_cdevs[i].volctl != 0 && 533 DSP_F_WRITE(flags)) { 534 volctl = DSP_CDEV_VOLCTL_READ; 535 flags &= ~FWRITE; 536 flags |= FREAD; 537 } 538 if (DSP_F_WRITE(flags)) { 539 (void)snd_clone_release(i_dev); 540 PCM_RELEASE_QUICK(d); 541 PCM_GIANT_EXIT(d); 542 return (ENOTSUP); 543 } 544 rdevunit = dev2unit(i_dev); 545 } 546 fmt = dsp_cdevs[i].fmt; 547 spd = dsp_cdevs[i].spd; 548 break; 549 } 550 551 /* No matching devtype? */ 552 if (fmt == 0 || spd == 0) 553 panic("impossible devtype %d", devtype); 554 555 rdch = NULL; 556 wrch = NULL; 557 rderror = 0; 558 wrerror = 0; 559 560 /* 561 * if we get here, the open request is valid- either: 562 * * we were previously not open 563 * * we were open for play xor record and the opener wants 564 * the non-open direction 565 */ 566 if (DSP_F_READ(flags)) { 567 /* open for read */ 568 rderror = pcm_chnalloc(d, &rdch, PCMDIR_REC, 569 td->td_proc->p_pid, td->td_proc->p_comm, rdevunit); 570 571 if (rderror == 0 && chn_reset(rdch, fmt, spd) != 0) 572 rderror = ENXIO; 573 574 if (volctl == DSP_CDEV_VOLCTL_READ) 575 rderror = 0; 576 577 if (rderror != 0) { 578 if (rdch != NULL) 579 pcm_chnrelease(rdch); 580 if (!DSP_F_DUPLEX(flags)) { 581 (void)snd_clone_release(i_dev); 582 PCM_RELEASE_QUICK(d); 583 PCM_GIANT_EXIT(d); 584 return (rderror); 585 } 586 rdch = NULL; 587 } else if (volctl == DSP_CDEV_VOLCTL_READ) { 588 if (rdch != NULL) { 589 pcm_chnref(rdch, 1); 590 pcm_chnrelease(rdch); 591 } 592 } else { 593 if (flags & O_NONBLOCK) 594 rdch->flags |= CHN_F_NBIO; 595 if (flags & O_EXCL) 596 rdch->flags |= CHN_F_EXCLUSIVE; 597 pcm_chnref(rdch, 1); 598 if (volctl == DSP_CDEV_VOLCTL_NONE) 599 chn_vpc_reset(rdch, SND_VOL_C_PCM, 0); 600 CHN_UNLOCK(rdch); 601 } 602 } 603 604 if (DSP_F_WRITE(flags)) { 605 /* open for write */ 606 wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY, 607 td->td_proc->p_pid, td->td_proc->p_comm, wdevunit); 608 609 if (wrerror == 0 && chn_reset(wrch, fmt, spd) != 0) 610 wrerror = ENXIO; 611 612 if (volctl == DSP_CDEV_VOLCTL_WRITE) 613 wrerror = 0; 614 615 if (wrerror != 0) { 616 if (wrch != NULL) 617 pcm_chnrelease(wrch); 618 if (!DSP_F_DUPLEX(flags)) { 619 if (rdch != NULL) { 620 /* 621 * Lock, deref and release previously 622 * created record channel 623 */ 624 CHN_LOCK(rdch); 625 pcm_chnref(rdch, -1); 626 pcm_chnrelease(rdch); 627 } 628 (void)snd_clone_release(i_dev); 629 PCM_RELEASE_QUICK(d); 630 PCM_GIANT_EXIT(d); 631 return (wrerror); 632 } 633 wrch = NULL; 634 } else if (volctl == DSP_CDEV_VOLCTL_WRITE) { 635 if (wrch != NULL) { 636 pcm_chnref(wrch, 1); 637 pcm_chnrelease(wrch); 638 } 639 } else { 640 if (flags & O_NONBLOCK) 641 wrch->flags |= CHN_F_NBIO; 642 if (flags & O_EXCL) 643 wrch->flags |= CHN_F_EXCLUSIVE; 644 pcm_chnref(wrch, 1); 645 if (volctl == DSP_CDEV_VOLCTL_NONE) 646 chn_vpc_reset(wrch, SND_VOL_C_PCM, 0); 647 CHN_UNLOCK(wrch); 648 } 649 } 650 651 652 PCM_LOCK(d); 653 654 /* 655 * We're done. Allocate channels information for this cdev. 656 */ 657 switch (volctl) { 658 case DSP_CDEV_VOLCTL_READ: 659 KASSERT(wrch == NULL, ("wrch=%p not null!", wrch)); 660 dsp_cdevinfo_alloc(i_dev, NULL, NULL, rdch); 661 break; 662 case DSP_CDEV_VOLCTL_WRITE: 663 KASSERT(rdch == NULL, ("rdch=%p not null!", rdch)); 664 dsp_cdevinfo_alloc(i_dev, NULL, NULL, wrch); 665 break; 666 case DSP_CDEV_VOLCTL_NONE: 667 default: 668 if (wrch == NULL && rdch == NULL) { 669 (void)snd_clone_release(i_dev); 670 PCM_RELEASE(d); 671 PCM_UNLOCK(d); 672 PCM_GIANT_EXIT(d); 673 if (wrerror != 0) 674 return (wrerror); 675 if (rderror != 0) 676 return (rderror); 677 return (EINVAL); 678 } 679 dsp_cdevinfo_alloc(i_dev, rdch, wrch, NULL); 680 if (rdch != NULL) 681 CHN_INSERT_HEAD(d, rdch, channels.pcm.opened); 682 if (wrch != NULL) 683 CHN_INSERT_HEAD(d, wrch, channels.pcm.opened); 684 break; 685 } 686 687 /* 688 * Increase clone refcount for its automatic garbage collector. 689 */ 690 (void)snd_clone_ref(i_dev); 691 692 PCM_RELEASE(d); 693 PCM_UNLOCK(d); 694 695 PCM_GIANT_LEAVE(d); 696 697 return (0); 698} 699 700static int 701dsp_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 702{ 703 struct pcm_channel *rdch, *wrch, *volch; 704 struct snddev_info *d; 705 int sg_ids, rdref, wdref; 706 707 d = dsp_get_info(i_dev); 708 if (!DSP_REGISTERED(d, i_dev)) 709 return (EBADF); 710 711 PCM_GIANT_ENTER(d); 712 713 PCM_LOCK(d); 714 PCM_WAIT(d); 715 PCM_ACQUIRE(d); 716 717 rdch = PCM_RDCH(i_dev); 718 wrch = PCM_WRCH(i_dev); 719 volch = PCM_VOLCH(i_dev); 720 721 PCM_RDCH(i_dev) = NULL; 722 PCM_WRCH(i_dev) = NULL; 723 PCM_VOLCH(i_dev) = NULL; 724 725 rdref = -1; 726 wdref = -1; 727 728 if (volch != NULL) { 729 if (volch == rdch) 730 rdref--; 731 else if (volch == wrch) 732 wdref--; 733 else { 734 CHN_LOCK(volch); 735 pcm_chnref(volch, -1); 736 CHN_UNLOCK(volch); 737 } 738 } 739 740 if (rdch != NULL) 741 CHN_REMOVE(d, rdch, channels.pcm.opened); 742 if (wrch != NULL) 743 CHN_REMOVE(d, wrch, channels.pcm.opened); 744 745 if (rdch != NULL || wrch != NULL) { 746 PCM_UNLOCK(d); 747 if (rdch != NULL) { 748 /* 749 * The channel itself need not be locked because: 750 * a) Adding a channel to a syncgroup happens only 751 * in dsp_ioctl(), which cannot run concurrently 752 * to dsp_close(). 753 * b) The syncmember pointer (sm) is protected by 754 * the global syncgroup list lock. 755 * c) A channel can't just disappear, invalidating 756 * pointers, unless it's closed/dereferenced 757 * first. 758 */ 759 PCM_SG_LOCK(); 760 sg_ids = chn_syncdestroy(rdch); 761 PCM_SG_UNLOCK(); 762 if (sg_ids != 0) 763 free_unr(pcmsg_unrhdr, sg_ids); 764 765 CHN_LOCK(rdch); 766 pcm_chnref(rdch, rdref); 767 chn_abort(rdch); /* won't sleep */ 768 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 769 CHN_F_DEAD | CHN_F_EXCLUSIVE); 770 chn_reset(rdch, 0, 0); 771 pcm_chnrelease(rdch); 772 } 773 if (wrch != NULL) { 774 /* 775 * Please see block above. 776 */ 777 PCM_SG_LOCK(); 778 sg_ids = chn_syncdestroy(wrch); 779 PCM_SG_UNLOCK(); 780 if (sg_ids != 0) 781 free_unr(pcmsg_unrhdr, sg_ids); 782 783 CHN_LOCK(wrch); 784 pcm_chnref(wrch, wdref); 785 chn_flush(wrch); /* may sleep */ 786 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 787 CHN_F_DEAD | CHN_F_EXCLUSIVE); 788 chn_reset(wrch, 0, 0); 789 pcm_chnrelease(wrch); 790 } 791 PCM_LOCK(d); 792 } 793 794 dsp_cdevinfo_free(i_dev); 795 /* 796 * Release clone busy state and unref it so the automatic 797 * garbage collector will get the hint and do the remaining 798 * cleanup process. 799 */ 800 (void)snd_clone_release(i_dev); 801 802 /* 803 * destroy_dev() might sleep, so release pcm lock 804 * here and rely on pcm cv serialization. 805 */ 806 PCM_UNLOCK(d); 807 (void)snd_clone_unref(i_dev); 808 PCM_LOCK(d); 809 810 PCM_RELEASE(d); 811 PCM_UNLOCK(d); 812 813 PCM_GIANT_LEAVE(d); 814 815 return (0); 816} 817 818static __inline int 819dsp_io_ops(struct cdev *i_dev, struct uio *buf) 820{ 821 struct snddev_info *d; 822 struct pcm_channel **ch, *rdch, *wrch; 823 int (*chn_io)(struct pcm_channel *, struct uio *); 824 int prio, ret; 825 pid_t runpid; 826 827 KASSERT(i_dev != NULL && buf != NULL && 828 (buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE), 829 ("%s(): io train wreck!", __func__)); 830 831 d = dsp_get_info(i_dev); 832 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 833 return (EBADF); 834 835 PCM_GIANT_ENTER(d); 836 837 switch (buf->uio_rw) { 838 case UIO_READ: 839 prio = SD_F_PRIO_RD; 840 ch = &rdch; 841 chn_io = chn_read; 842 break; 843 case UIO_WRITE: 844 prio = SD_F_PRIO_WR; 845 ch = &wrch; 846 chn_io = chn_write; 847 break; 848 default: 849 panic("invalid/corrupted uio direction: %d", buf->uio_rw); 850 break; 851 } 852 853 rdch = NULL; 854 wrch = NULL; 855 runpid = buf->uio_td->td_proc->p_pid; 856 857 getchns(i_dev, &rdch, &wrch, prio); 858 859 if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) { 860 PCM_GIANT_EXIT(d); 861 return (EBADF); 862 } 863 864 if (((*ch)->flags & (CHN_F_MMAP | CHN_F_DEAD)) || 865 (((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) { 866 relchns(i_dev, rdch, wrch, prio); 867 PCM_GIANT_EXIT(d); 868 return (EINVAL); 869 } else if (!((*ch)->flags & CHN_F_RUNNING)) { 870 (*ch)->flags |= CHN_F_RUNNING; 871 (*ch)->pid = runpid; 872 } 873 874 /* 875 * chn_read/write must give up channel lock in order to copy bytes 876 * from/to userland, so up the "in progress" counter to make sure 877 * someone else doesn't come along and muss up the buffer. 878 */ 879 ++(*ch)->inprog; 880 ret = chn_io(*ch, buf); 881 --(*ch)->inprog; 882 883 CHN_BROADCAST(&(*ch)->cv); 884 885 relchns(i_dev, rdch, wrch, prio); 886 887 PCM_GIANT_LEAVE(d); 888 889 return (ret); 890} 891 892static int 893dsp_read(struct cdev *i_dev, struct uio *buf, int flag) 894{ 895 return (dsp_io_ops(i_dev, buf)); 896} 897 898static int 899dsp_write(struct cdev *i_dev, struct uio *buf, int flag) 900{ 901 return (dsp_io_ops(i_dev, buf)); 902} 903 904static int 905dsp_get_volume_channel(struct cdev *dev, struct pcm_channel **volch) 906{ 907 struct snddev_info *d; 908 struct pcm_channel *c; 909 int unit; 910 911 KASSERT(dev != NULL && volch != NULL, 912 ("%s(): NULL query dev=%p volch=%p", __func__, dev, volch)); 913 914 d = dsp_get_info(dev); 915 if (!PCM_REGISTERED(d)) { 916 *volch = NULL; 917 return (EINVAL); 918 } 919 920 PCM_UNLOCKASSERT(d); 921 922 *volch = NULL; 923 924 c = PCM_VOLCH(dev); 925 if (c != NULL) { 926 if (!(c->feederflags & (1 << FEEDER_VOLUME))) 927 return (-1); 928 *volch = c; 929 return (0); 930 } 931 932 PCM_LOCK(d); 933 PCM_WAIT(d); 934 PCM_ACQUIRE(d); 935 936 unit = dev2unit(dev); 937 938 CHN_FOREACH(c, d, channels.pcm) { 939 CHN_LOCK(c); 940 if (c->unit != unit) { 941 CHN_UNLOCK(c); 942 continue; 943 } 944 *volch = c; 945 pcm_chnref(c, 1); 946 PCM_VOLCH(dev) = c; 947 CHN_UNLOCK(c); 948 PCM_RELEASE(d); 949 PCM_UNLOCK(d); 950 return ((c->feederflags & (1 << FEEDER_VOLUME)) ? 0 : -1); 951 } 952 953 PCM_RELEASE(d); 954 PCM_UNLOCK(d); 955 956 return (EINVAL); 957} 958 959static int 960dsp_ioctl_channel(struct cdev *dev, struct pcm_channel *volch, u_long cmd, 961 caddr_t arg) 962{ 963 struct snddev_info *d; 964 struct pcm_channel *rdch, *wrch; 965 int j, devtype, ret; 966 967 d = dsp_get_info(dev); 968 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 969 return (-1); 970 971 PCM_UNLOCKASSERT(d); 972 973 j = cmd & 0xff; 974 975 rdch = PCM_RDCH(dev); 976 wrch = PCM_WRCH(dev); 977 978 /* No specific channel, look into cache */ 979 if (volch == NULL) 980 volch = PCM_VOLCH(dev); 981 982 /* Look harder */ 983 if (volch == NULL) { 984 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 985 volch = rdch; 986 else if (j == SOUND_MIXER_PCM && wrch != NULL) 987 volch = wrch; 988 } 989 990 devtype = PCMDEV(dev); 991 992 /* Look super harder */ 993 if (volch == NULL && 994 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 995 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 996 ret = dsp_get_volume_channel(dev, &volch); 997 if (ret != 0) 998 return (ret); 999 if (volch == NULL) 1000 return (EINVAL); 1001 } 1002 1003 /* Final validation */ 1004 if (volch != NULL) { 1005 CHN_LOCK(volch); 1006 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 1007 CHN_UNLOCK(volch); 1008 return (-1); 1009 } 1010 if (volch->direction == PCMDIR_PLAY) 1011 wrch = volch; 1012 else 1013 rdch = volch; 1014 } 1015 1016 ret = EINVAL; 1017 1018 if (volch != NULL && 1019 ((j == SOUND_MIXER_PCM && volch->direction == PCMDIR_PLAY) || 1020 (j == SOUND_MIXER_RECLEV && volch->direction == PCMDIR_REC))) { 1021 if ((cmd & ~0xff) == MIXER_WRITE(0)) { 1022 int left, right, center; 1023 1024 left = *(int *)arg & 0x7f; 1025 right = ((*(int *)arg) >> 8) & 0x7f; 1026 center = (left + right) >> 1; 1027 chn_setvolume_multi(volch, SND_VOL_C_PCM, left, right, 1028 center); 1029 } else if ((cmd & ~0xff) == MIXER_READ(0)) { 1030 *(int *)arg = CHN_GETVOLUME(volch, 1031 SND_VOL_C_PCM, SND_CHN_T_FL); 1032 *(int *)arg |= CHN_GETVOLUME(volch, 1033 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1034 } 1035 ret = 0; 1036 } else if (rdch != NULL || wrch != NULL) { 1037 switch (j) { 1038 case SOUND_MIXER_DEVMASK: 1039 case SOUND_MIXER_CAPS: 1040 case SOUND_MIXER_STEREODEVS: 1041 if ((cmd & ~0xff) == MIXER_READ(0)) { 1042 *(int *)arg = 0; 1043 if (rdch != NULL) 1044 *(int *)arg |= SOUND_MASK_RECLEV; 1045 if (wrch != NULL) 1046 *(int *)arg |= SOUND_MASK_PCM; 1047 } 1048 ret = 0; 1049 break; 1050 case SOUND_MIXER_RECMASK: 1051 case SOUND_MIXER_RECSRC: 1052 if ((cmd & ~0xff) == MIXER_READ(0)) 1053 *(int *)arg = 0; 1054 ret = 0; 1055 break; 1056 default: 1057 break; 1058 } 1059 } 1060 1061 if (volch != NULL) 1062 CHN_UNLOCK(volch); 1063 1064 return (ret); 1065} 1066 1067static int 1068dsp_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1069 struct thread *td) 1070{ 1071 struct pcm_channel *chn, *rdch, *wrch; 1072 struct snddev_info *d; 1073 u_long xcmd; 1074 int *arg_i, ret, tmp; 1075 1076 d = dsp_get_info(i_dev); 1077 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 1078 return (EBADF); 1079 1080 PCM_GIANT_ENTER(d); 1081 1082 arg_i = (int *)arg; 1083 ret = 0; 1084 xcmd = 0; 1085 chn = NULL; 1086 1087 if (IOCGROUP(cmd) == 'M') { 1088 if (cmd == OSS_GETVERSION) { 1089 *arg_i = SOUND_VERSION; 1090 PCM_GIANT_EXIT(d); 1091 return (0); 1092 } 1093 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1094 if (ret != -1) { 1095 PCM_GIANT_EXIT(d); 1096 return (ret); 1097 } 1098 1099 if (d->mixer_dev != NULL) { 1100 PCM_ACQUIRE_QUICK(d); 1101 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1102 MIXER_CMD_DIRECT); 1103 PCM_RELEASE_QUICK(d); 1104 } else 1105 ret = EBADF; 1106 1107 PCM_GIANT_EXIT(d); 1108 1109 return (ret); 1110 } 1111 1112 /* 1113 * Certain ioctls may be made on any type of device (audio, mixer, 1114 * and MIDI). Handle those special cases here. 1115 */ 1116 if (IOCGROUP(cmd) == 'X') { 1117 PCM_ACQUIRE_QUICK(d); 1118 switch(cmd) { 1119 case SNDCTL_SYSINFO: 1120 sound_oss_sysinfo((oss_sysinfo *)arg); 1121 break; 1122 case SNDCTL_CARDINFO: 1123 ret = sound_oss_card_info((oss_card_info *)arg); 1124 break; 1125 case SNDCTL_AUDIOINFO: 1126 case SNDCTL_AUDIOINFO_EX: 1127 case SNDCTL_ENGINEINFO: 1128 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1129 break; 1130 case SNDCTL_MIXERINFO: 1131 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1132 break; 1133 default: 1134 ret = EINVAL; 1135 } 1136 PCM_RELEASE_QUICK(d); 1137 PCM_GIANT_EXIT(d); 1138 return (ret); 1139 } 1140 1141 getchns(i_dev, &rdch, &wrch, 0); 1142 1143 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1144 wrch = NULL; 1145 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1146 rdch = NULL; 1147 1148 if (wrch == NULL && rdch == NULL) { 1149 PCM_GIANT_EXIT(d); 1150 return (EINVAL); 1151 } 1152 1153 switch(cmd) { 1154#ifdef OLDPCM_IOCTL 1155 /* 1156 * we start with the new ioctl interface. 1157 */ 1158 case AIONWRITE: /* how many bytes can write ? */ 1159 if (wrch) { 1160 CHN_LOCK(wrch); 1161/* 1162 if (wrch && wrch->bufhard.dl) 1163 while (chn_wrfeed(wrch) == 0); 1164*/ 1165 *arg_i = sndbuf_getfree(wrch->bufsoft); 1166 CHN_UNLOCK(wrch); 1167 } else { 1168 *arg_i = 0; 1169 ret = EINVAL; 1170 } 1171 break; 1172 1173 case AIOSSIZE: /* set the current blocksize */ 1174 { 1175 struct snd_size *p = (struct snd_size *)arg; 1176 1177 p->play_size = 0; 1178 p->rec_size = 0; 1179 PCM_ACQUIRE_QUICK(d); 1180 if (wrch) { 1181 CHN_LOCK(wrch); 1182 chn_setblocksize(wrch, 2, p->play_size); 1183 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1184 CHN_UNLOCK(wrch); 1185 } 1186 if (rdch) { 1187 CHN_LOCK(rdch); 1188 chn_setblocksize(rdch, 2, p->rec_size); 1189 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1190 CHN_UNLOCK(rdch); 1191 } 1192 PCM_RELEASE_QUICK(d); 1193 } 1194 break; 1195 case AIOGSIZE: /* get the current blocksize */ 1196 { 1197 struct snd_size *p = (struct snd_size *)arg; 1198 1199 if (wrch) { 1200 CHN_LOCK(wrch); 1201 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1202 CHN_UNLOCK(wrch); 1203 } 1204 if (rdch) { 1205 CHN_LOCK(rdch); 1206 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1207 CHN_UNLOCK(rdch); 1208 } 1209 } 1210 break; 1211 1212 case AIOSFMT: 1213 case AIOGFMT: 1214 { 1215 snd_chan_param *p = (snd_chan_param *)arg; 1216 1217 if (cmd == AIOSFMT && 1218 ((p->play_format != 0 && p->play_rate == 0) || 1219 (p->rec_format != 0 && p->rec_rate == 0))) { 1220 ret = EINVAL; 1221 break; 1222 } 1223 PCM_ACQUIRE_QUICK(d); 1224 if (wrch) { 1225 CHN_LOCK(wrch); 1226 if (cmd == AIOSFMT && p->play_format != 0) { 1227 chn_setformat(wrch, 1228 SND_FORMAT(p->play_format, 1229 AFMT_CHANNEL(wrch->format), 1230 AFMT_EXTCHANNEL(wrch->format))); 1231 chn_setspeed(wrch, p->play_rate); 1232 } 1233 p->play_rate = wrch->speed; 1234 p->play_format = AFMT_ENCODING(wrch->format); 1235 CHN_UNLOCK(wrch); 1236 } else { 1237 p->play_rate = 0; 1238 p->play_format = 0; 1239 } 1240 if (rdch) { 1241 CHN_LOCK(rdch); 1242 if (cmd == AIOSFMT && p->rec_format != 0) { 1243 chn_setformat(rdch, 1244 SND_FORMAT(p->rec_format, 1245 AFMT_CHANNEL(rdch->format), 1246 AFMT_EXTCHANNEL(rdch->format))); 1247 chn_setspeed(rdch, p->rec_rate); 1248 } 1249 p->rec_rate = rdch->speed; 1250 p->rec_format = AFMT_ENCODING(rdch->format); 1251 CHN_UNLOCK(rdch); 1252 } else { 1253 p->rec_rate = 0; 1254 p->rec_format = 0; 1255 } 1256 PCM_RELEASE_QUICK(d); 1257 } 1258 break; 1259 1260 case AIOGCAP: /* get capabilities */ 1261 { 1262 snd_capabilities *p = (snd_capabilities *)arg; 1263 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1264 struct cdev *pdev; 1265 1266 PCM_LOCK(d); 1267 if (rdch) { 1268 CHN_LOCK(rdch); 1269 rcaps = chn_getcaps(rdch); 1270 } 1271 if (wrch) { 1272 CHN_LOCK(wrch); 1273 pcaps = chn_getcaps(wrch); 1274 } 1275 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1276 pcaps? pcaps->minspeed : 0); 1277 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1278 pcaps? pcaps->maxspeed : 1000000); 1279 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1280 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1281 /* XXX bad on sb16 */ 1282 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1283 (wrch? chn_getformats(wrch) : 0xffffffff); 1284 if (rdch && wrch) 1285 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1286 pdev = d->mixer_dev; 1287 p->mixers = 1; /* default: one mixer */ 1288 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1289 p->left = p->right = 100; 1290 if (wrch) 1291 CHN_UNLOCK(wrch); 1292 if (rdch) 1293 CHN_UNLOCK(rdch); 1294 PCM_UNLOCK(d); 1295 } 1296 break; 1297 1298 case AIOSTOP: 1299 if (*arg_i == AIOSYNC_PLAY && wrch) { 1300 CHN_LOCK(wrch); 1301 *arg_i = chn_abort(wrch); 1302 CHN_UNLOCK(wrch); 1303 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1304 CHN_LOCK(rdch); 1305 *arg_i = chn_abort(rdch); 1306 CHN_UNLOCK(rdch); 1307 } else { 1308 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1309 *arg_i = 0; 1310 } 1311 break; 1312 1313 case AIOSYNC: 1314 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1315 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1316 break; 1317#endif 1318 /* 1319 * here follow the standard ioctls (filio.h etc.) 1320 */ 1321 case FIONREAD: /* get # bytes to read */ 1322 if (rdch) { 1323 CHN_LOCK(rdch); 1324/* if (rdch && rdch->bufhard.dl) 1325 while (chn_rdfeed(rdch) == 0); 1326*/ 1327 *arg_i = sndbuf_getready(rdch->bufsoft); 1328 CHN_UNLOCK(rdch); 1329 } else { 1330 *arg_i = 0; 1331 ret = EINVAL; 1332 } 1333 break; 1334 1335 case FIOASYNC: /*set/clear async i/o */ 1336 DEB( printf("FIOASYNC\n") ; ) 1337 break; 1338 1339 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1340 case FIONBIO: /* set/clear non-blocking i/o */ 1341 if (rdch) { 1342 CHN_LOCK(rdch); 1343 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1344 rdch->flags |= CHN_F_NBIO; 1345 else 1346 rdch->flags &= ~CHN_F_NBIO; 1347 CHN_UNLOCK(rdch); 1348 } 1349 if (wrch) { 1350 CHN_LOCK(wrch); 1351 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1352 wrch->flags |= CHN_F_NBIO; 1353 else 1354 wrch->flags &= ~CHN_F_NBIO; 1355 CHN_UNLOCK(wrch); 1356 } 1357 break; 1358 1359 /* 1360 * Finally, here is the linux-compatible ioctl interface 1361 */ 1362#define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1363 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1364 case SNDCTL_DSP_GETBLKSIZE: 1365 chn = wrch ? wrch : rdch; 1366 if (chn) { 1367 CHN_LOCK(chn); 1368 *arg_i = sndbuf_getblksz(chn->bufsoft); 1369 CHN_UNLOCK(chn); 1370 } else { 1371 *arg_i = 0; 1372 ret = EINVAL; 1373 } 1374 break; 1375 1376 case SNDCTL_DSP_SETBLKSIZE: 1377 RANGE(*arg_i, 16, 65536); 1378 PCM_ACQUIRE_QUICK(d); 1379 if (wrch) { 1380 CHN_LOCK(wrch); 1381 chn_setblocksize(wrch, 2, *arg_i); 1382 CHN_UNLOCK(wrch); 1383 } 1384 if (rdch) { 1385 CHN_LOCK(rdch); 1386 chn_setblocksize(rdch, 2, *arg_i); 1387 CHN_UNLOCK(rdch); 1388 } 1389 PCM_RELEASE_QUICK(d); 1390 break; 1391 1392 case SNDCTL_DSP_RESET: 1393 DEB(printf("dsp reset\n")); 1394 if (wrch) { 1395 CHN_LOCK(wrch); 1396 chn_abort(wrch); 1397 chn_resetbuf(wrch); 1398 CHN_UNLOCK(wrch); 1399 } 1400 if (rdch) { 1401 CHN_LOCK(rdch); 1402 chn_abort(rdch); 1403 chn_resetbuf(rdch); 1404 CHN_UNLOCK(rdch); 1405 } 1406 break; 1407 1408 case SNDCTL_DSP_SYNC: 1409 DEB(printf("dsp sync\n")); 1410 /* chn_sync may sleep */ 1411 if (wrch) { 1412 CHN_LOCK(wrch); 1413 chn_sync(wrch, 0); 1414 CHN_UNLOCK(wrch); 1415 } 1416 break; 1417 1418 case SNDCTL_DSP_SPEED: 1419 /* chn_setspeed may sleep */ 1420 tmp = 0; 1421 PCM_ACQUIRE_QUICK(d); 1422 if (wrch) { 1423 CHN_LOCK(wrch); 1424 ret = chn_setspeed(wrch, *arg_i); 1425 tmp = wrch->speed; 1426 CHN_UNLOCK(wrch); 1427 } 1428 if (rdch && ret == 0) { 1429 CHN_LOCK(rdch); 1430 ret = chn_setspeed(rdch, *arg_i); 1431 if (tmp == 0) 1432 tmp = rdch->speed; 1433 CHN_UNLOCK(rdch); 1434 } 1435 PCM_RELEASE_QUICK(d); 1436 *arg_i = tmp; 1437 break; 1438 1439 case SOUND_PCM_READ_RATE: 1440 chn = wrch ? wrch : rdch; 1441 if (chn) { 1442 CHN_LOCK(chn); 1443 *arg_i = chn->speed; 1444 CHN_UNLOCK(chn); 1445 } else { 1446 *arg_i = 0; 1447 ret = EINVAL; 1448 } 1449 break; 1450 1451 case SNDCTL_DSP_STEREO: 1452 tmp = -1; 1453 *arg_i = (*arg_i)? 2 : 1; 1454 PCM_ACQUIRE_QUICK(d); 1455 if (wrch) { 1456 CHN_LOCK(wrch); 1457 ret = chn_setformat(wrch, 1458 SND_FORMAT(wrch->format, *arg_i, 0)); 1459 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1460 CHN_UNLOCK(wrch); 1461 } 1462 if (rdch && ret == 0) { 1463 CHN_LOCK(rdch); 1464 ret = chn_setformat(rdch, 1465 SND_FORMAT(rdch->format, *arg_i, 0)); 1466 if (tmp == -1) 1467 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1468 CHN_UNLOCK(rdch); 1469 } 1470 PCM_RELEASE_QUICK(d); 1471 *arg_i = tmp; 1472 break; 1473 1474 case SOUND_PCM_WRITE_CHANNELS: 1475/* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1476 if (*arg_i < 0) { 1477 *arg_i = 0; 1478 ret = EINVAL; 1479 break; 1480 } 1481 if (*arg_i != 0) { 1482 struct pcmchan_matrix *m; 1483 uint32_t ext; 1484 1485 tmp = 0; 1486 if (*arg_i > SND_CHN_MAX) 1487 *arg_i = SND_CHN_MAX; 1488 1489 m = feeder_matrix_default_channel_map(*arg_i); 1490 if (m != NULL) 1491 ext = m->ext; 1492 else 1493 ext = 0; 1494 1495 PCM_ACQUIRE_QUICK(d); 1496 if (wrch) { 1497 CHN_LOCK(wrch); 1498 ret = chn_setformat(wrch, 1499 SND_FORMAT(wrch->format, *arg_i, ext)); 1500 tmp = AFMT_CHANNEL(wrch->format); 1501 CHN_UNLOCK(wrch); 1502 } 1503 if (rdch && ret == 0) { 1504 CHN_LOCK(rdch); 1505 ret = chn_setformat(rdch, 1506 SND_FORMAT(rdch->format, *arg_i, ext)); 1507 if (tmp == 0) 1508 tmp = AFMT_CHANNEL(rdch->format); 1509 CHN_UNLOCK(rdch); 1510 } 1511 PCM_RELEASE_QUICK(d); 1512 *arg_i = tmp; 1513 } else { 1514 chn = wrch ? wrch : rdch; 1515 CHN_LOCK(chn); 1516 *arg_i = AFMT_CHANNEL(chn->format); 1517 CHN_UNLOCK(chn); 1518 } 1519 break; 1520 1521 case SOUND_PCM_READ_CHANNELS: 1522 chn = wrch ? wrch : rdch; 1523 if (chn) { 1524 CHN_LOCK(chn); 1525 *arg_i = AFMT_CHANNEL(chn->format); 1526 CHN_UNLOCK(chn); 1527 } else { 1528 *arg_i = 0; 1529 ret = EINVAL; 1530 } 1531 break; 1532 1533 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1534 chn = wrch ? wrch : rdch; 1535 if (chn) { 1536 CHN_LOCK(chn); 1537 *arg_i = chn_getformats(chn); 1538 CHN_UNLOCK(chn); 1539 } else { 1540 *arg_i = 0; 1541 ret = EINVAL; 1542 } 1543 break; 1544 1545 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1546 if (*arg_i != AFMT_QUERY) { 1547 tmp = 0; 1548 PCM_ACQUIRE_QUICK(d); 1549 if (wrch) { 1550 CHN_LOCK(wrch); 1551 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1552 AFMT_CHANNEL(wrch->format), 1553 AFMT_EXTCHANNEL(wrch->format))); 1554 tmp = wrch->format; 1555 CHN_UNLOCK(wrch); 1556 } 1557 if (rdch && ret == 0) { 1558 CHN_LOCK(rdch); 1559 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1560 AFMT_CHANNEL(rdch->format), 1561 AFMT_EXTCHANNEL(rdch->format))); 1562 if (tmp == 0) 1563 tmp = rdch->format; 1564 CHN_UNLOCK(rdch); 1565 } 1566 PCM_RELEASE_QUICK(d); 1567 *arg_i = AFMT_ENCODING(tmp); 1568 } else { 1569 chn = wrch ? wrch : rdch; 1570 CHN_LOCK(chn); 1571 *arg_i = AFMT_ENCODING(chn->format); 1572 CHN_UNLOCK(chn); 1573 } 1574 break; 1575 1576 case SNDCTL_DSP_SETFRAGMENT: 1577 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1578 { 1579 uint32_t fragln = (*arg_i) & 0x0000ffff; 1580 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1581 uint32_t fragsz; 1582 uint32_t r_maxfrags, r_fragsz; 1583 1584 RANGE(fragln, 4, 16); 1585 fragsz = 1 << fragln; 1586 1587 if (maxfrags == 0) 1588 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1589 if (maxfrags < 2) 1590 maxfrags = 2; 1591 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1592 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1593 1594 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1595 PCM_ACQUIRE_QUICK(d); 1596 if (rdch) { 1597 CHN_LOCK(rdch); 1598 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1599 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1600 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1601 CHN_UNLOCK(rdch); 1602 } else { 1603 r_maxfrags = maxfrags; 1604 r_fragsz = fragsz; 1605 } 1606 if (wrch && ret == 0) { 1607 CHN_LOCK(wrch); 1608 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1609 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1610 fragsz = sndbuf_getblksz(wrch->bufsoft); 1611 CHN_UNLOCK(wrch); 1612 } else { /* use whatever came from the read channel */ 1613 maxfrags = r_maxfrags; 1614 fragsz = r_fragsz; 1615 } 1616 PCM_RELEASE_QUICK(d); 1617 1618 fragln = 0; 1619 while (fragsz > 1) { 1620 fragln++; 1621 fragsz >>= 1; 1622 } 1623 *arg_i = (maxfrags << 16) | fragln; 1624 } 1625 break; 1626 1627 case SNDCTL_DSP_GETISPACE: 1628 /* return the size of data available in the input queue */ 1629 { 1630 audio_buf_info *a = (audio_buf_info *)arg; 1631 if (rdch) { 1632 struct snd_dbuf *bs = rdch->bufsoft; 1633 1634 CHN_LOCK(rdch); 1635 a->bytes = sndbuf_getready(bs); 1636 a->fragments = a->bytes / sndbuf_getblksz(bs); 1637 a->fragstotal = sndbuf_getblkcnt(bs); 1638 a->fragsize = sndbuf_getblksz(bs); 1639 CHN_UNLOCK(rdch); 1640 } else 1641 ret = EINVAL; 1642 } 1643 break; 1644 1645 case SNDCTL_DSP_GETOSPACE: 1646 /* return space available in the output queue */ 1647 { 1648 audio_buf_info *a = (audio_buf_info *)arg; 1649 if (wrch) { 1650 struct snd_dbuf *bs = wrch->bufsoft; 1651 1652 CHN_LOCK(wrch); 1653 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1654 a->bytes = sndbuf_getfree(bs); 1655 a->fragments = a->bytes / sndbuf_getblksz(bs); 1656 a->fragstotal = sndbuf_getblkcnt(bs); 1657 a->fragsize = sndbuf_getblksz(bs); 1658 CHN_UNLOCK(wrch); 1659 } else 1660 ret = EINVAL; 1661 } 1662 break; 1663 1664 case SNDCTL_DSP_GETIPTR: 1665 { 1666 count_info *a = (count_info *)arg; 1667 if (rdch) { 1668 struct snd_dbuf *bs = rdch->bufsoft; 1669 1670 CHN_LOCK(rdch); 1671 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1672 a->bytes = sndbuf_gettotal(bs); 1673 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1674 a->ptr = sndbuf_getfreeptr(bs); 1675 rdch->blocks = sndbuf_getblocks(bs); 1676 CHN_UNLOCK(rdch); 1677 } else 1678 ret = EINVAL; 1679 } 1680 break; 1681 1682 case SNDCTL_DSP_GETOPTR: 1683 { 1684 count_info *a = (count_info *)arg; 1685 if (wrch) { 1686 struct snd_dbuf *bs = wrch->bufsoft; 1687 1688 CHN_LOCK(wrch); 1689 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1690 a->bytes = sndbuf_gettotal(bs); 1691 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1692 a->ptr = sndbuf_getreadyptr(bs); 1693 wrch->blocks = sndbuf_getblocks(bs); 1694 CHN_UNLOCK(wrch); 1695 } else 1696 ret = EINVAL; 1697 } 1698 break; 1699 1700 case SNDCTL_DSP_GETCAPS: 1701 PCM_LOCK(d); 1702 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1703 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1704 *arg_i |= PCM_CAP_DUPLEX; 1705 PCM_UNLOCK(d); 1706 break; 1707 1708 case SOUND_PCM_READ_BITS: 1709 chn = wrch ? wrch : rdch; 1710 if (chn) { 1711 CHN_LOCK(chn); 1712 if (chn->format & AFMT_8BIT) 1713 *arg_i = 8; 1714 else if (chn->format & AFMT_16BIT) 1715 *arg_i = 16; 1716 else if (chn->format & AFMT_24BIT) 1717 *arg_i = 24; 1718 else if (chn->format & AFMT_32BIT) 1719 *arg_i = 32; 1720 else 1721 ret = EINVAL; 1722 CHN_UNLOCK(chn); 1723 } else { 1724 *arg_i = 0; 1725 ret = EINVAL; 1726 } 1727 break; 1728 1729 case SNDCTL_DSP_SETTRIGGER: 1730 if (rdch) { 1731 CHN_LOCK(rdch); 1732 rdch->flags &= ~CHN_F_NOTRIGGER; 1733 if (*arg_i & PCM_ENABLE_INPUT) 1734 chn_start(rdch, 1); 1735 else { 1736 chn_abort(rdch); 1737 chn_resetbuf(rdch); 1738 rdch->flags |= CHN_F_NOTRIGGER; 1739 } 1740 CHN_UNLOCK(rdch); 1741 } 1742 if (wrch) { 1743 CHN_LOCK(wrch); 1744 wrch->flags &= ~CHN_F_NOTRIGGER; 1745 if (*arg_i & PCM_ENABLE_OUTPUT) 1746 chn_start(wrch, 1); 1747 else { 1748 chn_abort(wrch); 1749 chn_resetbuf(wrch); 1750 wrch->flags |= CHN_F_NOTRIGGER; 1751 } 1752 CHN_UNLOCK(wrch); 1753 } 1754 break; 1755 1756 case SNDCTL_DSP_GETTRIGGER: 1757 *arg_i = 0; 1758 if (wrch) { 1759 CHN_LOCK(wrch); 1760 if (wrch->flags & CHN_F_TRIGGERED) 1761 *arg_i |= PCM_ENABLE_OUTPUT; 1762 CHN_UNLOCK(wrch); 1763 } 1764 if (rdch) { 1765 CHN_LOCK(rdch); 1766 if (rdch->flags & CHN_F_TRIGGERED) 1767 *arg_i |= PCM_ENABLE_INPUT; 1768 CHN_UNLOCK(rdch); 1769 } 1770 break; 1771 1772 case SNDCTL_DSP_GETODELAY: 1773 if (wrch) { 1774 struct snd_dbuf *bs = wrch->bufsoft; 1775 1776 CHN_LOCK(wrch); 1777 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1778 *arg_i = sndbuf_getready(bs); 1779 CHN_UNLOCK(wrch); 1780 } else 1781 ret = EINVAL; 1782 break; 1783 1784 case SNDCTL_DSP_POST: 1785 if (wrch) { 1786 CHN_LOCK(wrch); 1787 wrch->flags &= ~CHN_F_NOTRIGGER; 1788 chn_start(wrch, 1); 1789 CHN_UNLOCK(wrch); 1790 } 1791 break; 1792 1793 case SNDCTL_DSP_SETDUPLEX: 1794 /* 1795 * switch to full-duplex mode if card is in half-duplex 1796 * mode and is able to work in full-duplex mode 1797 */ 1798 PCM_LOCK(d); 1799 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1800 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1801 PCM_UNLOCK(d); 1802 break; 1803 1804 /* 1805 * The following four ioctls are simple wrappers around mixer_ioctl 1806 * with no further processing. xcmd is short for "translated 1807 * command". 1808 */ 1809 case SNDCTL_DSP_GETRECVOL: 1810 if (xcmd == 0) { 1811 xcmd = SOUND_MIXER_READ_RECLEV; 1812 chn = rdch; 1813 } 1814 /* FALLTHROUGH */ 1815 case SNDCTL_DSP_SETRECVOL: 1816 if (xcmd == 0) { 1817 xcmd = SOUND_MIXER_WRITE_RECLEV; 1818 chn = rdch; 1819 } 1820 /* FALLTHROUGH */ 1821 case SNDCTL_DSP_GETPLAYVOL: 1822 if (xcmd == 0) { 1823 xcmd = SOUND_MIXER_READ_PCM; 1824 chn = wrch; 1825 } 1826 /* FALLTHROUGH */ 1827 case SNDCTL_DSP_SETPLAYVOL: 1828 if (xcmd == 0) { 1829 xcmd = SOUND_MIXER_WRITE_PCM; 1830 chn = wrch; 1831 } 1832 1833 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1834 if (ret != -1) { 1835 PCM_GIANT_EXIT(d); 1836 return (ret); 1837 } 1838 1839 if (d->mixer_dev != NULL) { 1840 PCM_ACQUIRE_QUICK(d); 1841 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1842 MIXER_CMD_DIRECT); 1843 PCM_RELEASE_QUICK(d); 1844 } else 1845 ret = ENOTSUP; 1846 1847 break; 1848 1849 case SNDCTL_DSP_GET_RECSRC_NAMES: 1850 case SNDCTL_DSP_GET_RECSRC: 1851 case SNDCTL_DSP_SET_RECSRC: 1852 if (d->mixer_dev != NULL) { 1853 PCM_ACQUIRE_QUICK(d); 1854 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1855 MIXER_CMD_DIRECT); 1856 PCM_RELEASE_QUICK(d); 1857 } else 1858 ret = ENOTSUP; 1859 break; 1860 1861 /* 1862 * The following 3 ioctls aren't very useful at the moment. For 1863 * now, only a single channel is associated with a cdev (/dev/dspN 1864 * instance), so there's only a single output routing to use (i.e., 1865 * the wrch bound to this cdev). 1866 */ 1867 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1868 { 1869 oss_mixer_enuminfo *ei; 1870 ei = (oss_mixer_enuminfo *)arg; 1871 ei->dev = 0; 1872 ei->ctrl = 0; 1873 ei->version = 0; /* static for now */ 1874 ei->strindex[0] = 0; 1875 1876 if (wrch != NULL) { 1877 ei->nvalues = 1; 1878 strlcpy(ei->strings, wrch->name, 1879 sizeof(ei->strings)); 1880 } else { 1881 ei->nvalues = 0; 1882 ei->strings[0] = '\0'; 1883 } 1884 } 1885 break; 1886 case SNDCTL_DSP_GET_PLAYTGT: 1887 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1888 /* 1889 * Re: SET_PLAYTGT 1890 * OSSv4: "The value that was accepted by the device will 1891 * be returned back in the variable pointed by the 1892 * argument." 1893 */ 1894 if (wrch != NULL) 1895 *arg_i = 0; 1896 else 1897 ret = EINVAL; 1898 break; 1899 1900 case SNDCTL_DSP_SILENCE: 1901 /* 1902 * Flush the software (pre-feed) buffer, but try to minimize playback 1903 * interruption. (I.e., record unplayed samples with intent to 1904 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1905 * functionality. 1906 */ 1907 if (wrch == NULL) 1908 ret = EINVAL; 1909 else { 1910 struct snd_dbuf *bs; 1911 CHN_LOCK(wrch); 1912 while (wrch->inprog != 0) 1913 cv_wait(&wrch->cv, wrch->lock); 1914 bs = wrch->bufsoft; 1915 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1916 bs->sl = sndbuf_getready(bs); 1917 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1918 sndbuf_fillsilence(bs); 1919 chn_start(wrch, 0); 1920 } 1921 CHN_UNLOCK(wrch); 1922 } 1923 break; 1924 1925 case SNDCTL_DSP_SKIP: 1926 /* 1927 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1928 * playback buffer by moving the current write position immediately 1929 * before the point where the device is currently reading the samples." 1930 */ 1931 if (wrch == NULL) 1932 ret = EINVAL; 1933 else { 1934 struct snd_dbuf *bs; 1935 CHN_LOCK(wrch); 1936 while (wrch->inprog != 0) 1937 cv_wait(&wrch->cv, wrch->lock); 1938 bs = wrch->bufsoft; 1939 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1940 sndbuf_softreset(bs); 1941 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1942 bs->sl = 0; 1943 chn_start(wrch, 0); 1944 } 1945 CHN_UNLOCK(wrch); 1946 } 1947 break; 1948 1949 case SNDCTL_DSP_CURRENT_OPTR: 1950 case SNDCTL_DSP_CURRENT_IPTR: 1951 /** 1952 * @note Changing formats resets the buffer counters, which differs 1953 * from the 4Front drivers. However, I don't expect this to be 1954 * much of a problem. 1955 * 1956 * @note In a test where @c CURRENT_OPTR is called immediately after write 1957 * returns, this driver is about 32K samples behind whereas 1958 * 4Front's is about 8K samples behind. Should determine source 1959 * of discrepancy, even if only out of curiosity. 1960 * 1961 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1962 */ 1963 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1964 if (chn == NULL) 1965 ret = EINVAL; 1966 else { 1967 struct snd_dbuf *bs; 1968 /* int tmp; */ 1969 1970 oss_count_t *oc = (oss_count_t *)arg; 1971 1972 CHN_LOCK(chn); 1973 bs = chn->bufsoft; 1974#if 0 1975 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1976 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1977 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1978#else 1979 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1980 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1981#endif 1982 CHN_UNLOCK(chn); 1983 } 1984 break; 1985 1986 case SNDCTL_DSP_HALT_OUTPUT: 1987 case SNDCTL_DSP_HALT_INPUT: 1988 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1989 if (chn == NULL) 1990 ret = EINVAL; 1991 else { 1992 CHN_LOCK(chn); 1993 chn_abort(chn); 1994 CHN_UNLOCK(chn); 1995 } 1996 break; 1997 1998 case SNDCTL_DSP_LOW_WATER: 1999 /* 2000 * Set the number of bytes required to attract attention by 2001 * select/poll. 2002 */ 2003 if (wrch != NULL) { 2004 CHN_LOCK(wrch); 2005 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 2006 CHN_UNLOCK(wrch); 2007 } 2008 if (rdch != NULL) { 2009 CHN_LOCK(rdch); 2010 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2011 CHN_UNLOCK(rdch); 2012 } 2013 break; 2014 2015 case SNDCTL_DSP_GETERROR: 2016 /* 2017 * OSSv4 docs: "All errors and counters will automatically be 2018 * cleared to zeroes after the call so each call will return only 2019 * the errors that occurred after the previous invocation. ... The 2020 * play_underruns and rec_overrun fields are the only useful fields 2021 * returned by OSS 4.0." 2022 */ 2023 { 2024 audio_errinfo *ei = (audio_errinfo *)arg; 2025 2026 bzero((void *)ei, sizeof(*ei)); 2027 2028 if (wrch != NULL) { 2029 CHN_LOCK(wrch); 2030 ei->play_underruns = wrch->xruns; 2031 wrch->xruns = 0; 2032 CHN_UNLOCK(wrch); 2033 } 2034 if (rdch != NULL) { 2035 CHN_LOCK(rdch); 2036 ei->rec_overruns = rdch->xruns; 2037 rdch->xruns = 0; 2038 CHN_UNLOCK(rdch); 2039 } 2040 } 2041 break; 2042 2043 case SNDCTL_DSP_SYNCGROUP: 2044 PCM_ACQUIRE_QUICK(d); 2045 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2046 PCM_RELEASE_QUICK(d); 2047 break; 2048 2049 case SNDCTL_DSP_SYNCSTART: 2050 PCM_ACQUIRE_QUICK(d); 2051 ret = dsp_oss_syncstart(*arg_i); 2052 PCM_RELEASE_QUICK(d); 2053 break; 2054 2055 case SNDCTL_DSP_POLICY: 2056 PCM_ACQUIRE_QUICK(d); 2057 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2058 PCM_RELEASE_QUICK(d); 2059 break; 2060 2061 case SNDCTL_DSP_COOKEDMODE: 2062 PCM_ACQUIRE_QUICK(d); 2063 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2064 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2065 PCM_RELEASE_QUICK(d); 2066 break; 2067 case SNDCTL_DSP_GET_CHNORDER: 2068 PCM_ACQUIRE_QUICK(d); 2069 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2070 PCM_RELEASE_QUICK(d); 2071 break; 2072 case SNDCTL_DSP_SET_CHNORDER: 2073 PCM_ACQUIRE_QUICK(d); 2074 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2075 PCM_RELEASE_QUICK(d); 2076 break; 2077 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2078 PCM_ACQUIRE_QUICK(d); 2079 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2080 PCM_RELEASE_QUICK(d); 2081 break; 2082 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2083 ret = EINVAL; 2084 break; 2085#ifdef OSSV4_EXPERIMENT 2086 /* 2087 * XXX The following ioctls are not yet supported and just return 2088 * EINVAL. 2089 */ 2090 case SNDCTL_DSP_GETOPEAKS: 2091 case SNDCTL_DSP_GETIPEAKS: 2092 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2093 if (chn == NULL) 2094 ret = EINVAL; 2095 else { 2096 oss_peaks_t *op = (oss_peaks_t *)arg; 2097 int lpeak, rpeak; 2098 2099 CHN_LOCK(chn); 2100 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2101 if (ret == -1) 2102 ret = EINVAL; 2103 else { 2104 (*op)[0] = lpeak; 2105 (*op)[1] = rpeak; 2106 } 2107 CHN_UNLOCK(chn); 2108 } 2109 break; 2110 2111 /* 2112 * XXX Once implemented, revisit this for proper cv protection 2113 * (if necessary). 2114 */ 2115 case SNDCTL_GETLABEL: 2116 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2117 break; 2118 case SNDCTL_SETLABEL: 2119 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2120 break; 2121 case SNDCTL_GETSONG: 2122 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2123 break; 2124 case SNDCTL_SETSONG: 2125 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2126 break; 2127 case SNDCTL_SETNAME: 2128 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2129 break; 2130#if 0 2131 /** 2132 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2133 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2134 * 4Front Technologies. 2135 */ 2136 case SNDCTL_DSP_READCTL: 2137 case SNDCTL_DSP_WRITECTL: 2138 ret = EINVAL; 2139 break; 2140#endif /* !0 (explicitly omitted ioctls) */ 2141 2142#endif /* !OSSV4_EXPERIMENT */ 2143 case SNDCTL_DSP_MAPINBUF: 2144 case SNDCTL_DSP_MAPOUTBUF: 2145 case SNDCTL_DSP_SETSYNCRO: 2146 /* undocumented */ 2147 2148 case SNDCTL_DSP_SUBDIVIDE: 2149 case SOUND_PCM_WRITE_FILTER: 2150 case SOUND_PCM_READ_FILTER: 2151 /* dunno what these do, don't sound important */ 2152 2153 default: 2154 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2155 ret = EINVAL; 2156 break; 2157 } 2158 2159 PCM_GIANT_LEAVE(d); 2160 2161 return (ret); 2162} 2163 2164static int 2165dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2166{ 2167 struct snddev_info *d; 2168 struct pcm_channel *wrch, *rdch; 2169 int ret, e; 2170 2171 d = dsp_get_info(i_dev); 2172 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) { 2173 /* XXX many clients don't understand POLLNVAL */ 2174 return (events & (POLLHUP | POLLPRI | POLLIN | 2175 POLLRDNORM | POLLOUT | POLLWRNORM)); 2176 } 2177 PCM_GIANT_ENTER(d); 2178 2179 wrch = NULL; 2180 rdch = NULL; 2181 ret = 0; 2182 2183 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2184 2185 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2186 e = (events & (POLLOUT | POLLWRNORM)); 2187 if (e) 2188 ret |= chn_poll(wrch, e, td); 2189 } 2190 2191 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2192 e = (events & (POLLIN | POLLRDNORM)); 2193 if (e) 2194 ret |= chn_poll(rdch, e, td); 2195 } 2196 2197 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2198 2199 PCM_GIANT_LEAVE(d); 2200 2201 return (ret); 2202} 2203 2204static int 2205dsp_mmap(struct cdev *i_dev, vm_ooffset_t offset, vm_paddr_t *paddr, 2206 int nprot, vm_memattr_t *memattr) 2207{ 2208 2209 /* XXX memattr is not honored */ 2210 *paddr = vtophys(offset); 2211 return (0); 2212} 2213 2214static int 2215dsp_mmap_single(struct cdev *i_dev, vm_ooffset_t *offset, 2216 vm_size_t size, struct vm_object **object, int nprot) 2217{ 2218 struct snddev_info *d; 2219 struct pcm_channel *wrch, *rdch, *c; 2220 2221 /* 2222 * Reject PROT_EXEC by default. It just doesn't makes sense. 2223 * Unfortunately, we have to give up this one due to linux_mmap 2224 * changes. 2225 * 2226 * http://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2227 * 2228 */ 2229#ifdef SV_ABI_LINUX 2230 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2231 (dsp_mmap_allow_prot_exec == 0 && 2232 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2233#else 2234 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2235#endif 2236 return (EINVAL); 2237 2238 /* 2239 * PROT_READ (alone) selects the input buffer. 2240 * PROT_WRITE (alone) selects the output buffer. 2241 * PROT_WRITE|PROT_READ together select the output buffer. 2242 */ 2243 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2244 return (EINVAL); 2245 2246 d = dsp_get_info(i_dev); 2247 if (PCM_DETACHING(d) || !DSP_REGISTERED(d, i_dev)) 2248 return (EINVAL); 2249 2250 PCM_GIANT_ENTER(d); 2251 2252 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2253 2254 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2255 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2256 (*offset + size) > sndbuf_getsize(c->bufsoft) || 2257 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2258 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2259 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2260 PCM_GIANT_EXIT(d); 2261 return (EINVAL); 2262 } 2263 2264 if (wrch != NULL) 2265 wrch->flags |= CHN_F_MMAP; 2266 if (rdch != NULL) 2267 rdch->flags |= CHN_F_MMAP; 2268 2269 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2270 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2271 *object = vm_pager_allocate(OBJT_DEVICE, i_dev, 2272 size, nprot, *offset, curthread->td_ucred); 2273 2274 PCM_GIANT_LEAVE(d); 2275 2276 if (*object == NULL) 2277 return (EINVAL); 2278 return (0); 2279} 2280 2281/* So much for dev_stdclone() */ 2282static int 2283dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2284{ 2285 size_t len; 2286 2287 len = strlen(namep); 2288 2289 if (bcmp(name, namep, len) != 0) 2290 return (ENODEV); 2291 2292 name += len; 2293 2294 if (isdigit(*name) == 0) 2295 return (ENODEV); 2296 2297 len = strlen(sep); 2298 2299 if (*name == '0' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2300 return (ENODEV); 2301 2302 for (*u = 0; isdigit(*name) != 0; name++) { 2303 *u *= 10; 2304 *u += *name - '0'; 2305 if (*u > dsp_umax) 2306 return (ENODEV); 2307 } 2308 2309 if (*name == '\0') 2310 return ((use_sep == 0) ? 0 : ENODEV); 2311 2312 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2313 return (ENODEV); 2314 2315 name += len; 2316 2317 if (*name == '0' && name[1] != '\0') 2318 return (ENODEV); 2319 2320 for (*c = 0; isdigit(*name) != 0; name++) { 2321 *c *= 10; 2322 *c += *name - '0'; 2323 if (*c > dsp_cmax) 2324 return (ENODEV); 2325 } 2326 2327 if (*name != '\0') 2328 return (ENODEV); 2329 2330 return (0); 2331} 2332 2333static void 2334dsp_clone(void *arg, 2335#if __FreeBSD_version >= 600034 2336 struct ucred *cred, 2337#endif 2338 char *name, int namelen, struct cdev **dev) 2339{ 2340 struct snddev_info *d; 2341 struct snd_clone_entry *ce; 2342 struct pcm_channel *c; 2343 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2344 char *devname, *devcmp, *devsep; 2345 2346 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2347 2348 if (*dev != NULL) 2349 return; 2350 2351 unit = -1; 2352 cunit = -1; 2353 devtype = -1; 2354 devhw = 0; 2355 devcmax = -1; 2356 tumax = -1; 2357 devname = NULL; 2358 devsep = NULL; 2359 2360 for (i = 0; unit == -1 && 2361 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2362 devtype = dsp_cdevs[i].type; 2363 devcmp = dsp_cdevs[i].name; 2364 devsep = dsp_cdevs[i].sep; 2365 devname = dsp_cdevs[i].alias; 2366 if (devname == NULL) 2367 devname = devcmp; 2368 devhw = dsp_cdevs[i].hw; 2369 devcmax = dsp_cdevs[i].max - 1; 2370 if (strcmp(name, devcmp) == 0) { 2371 if (dsp_basename_clone != 0) 2372 unit = snd_unit; 2373 } else if (dsp_stdclone(name, devcmp, devsep, 2374 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2375 unit = -1; 2376 cunit = -1; 2377 } 2378 } 2379 2380 d = devclass_get_softc(pcm_devclass, unit); 2381 if (!PCM_REGISTERED(d) || d->clones == NULL) 2382 return; 2383 2384 /* XXX Need Giant magic entry ??? */ 2385 2386 PCM_LOCK(d); 2387 if (snd_clone_disabled(d->clones)) { 2388 PCM_UNLOCK(d); 2389 return; 2390 } 2391 2392 PCM_WAIT(d); 2393 PCM_ACQUIRE(d); 2394 PCM_UNLOCK(d); 2395 2396 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2397 2398 if (devhw != 0) { 2399 KASSERT(devcmax <= dsp_cmax, 2400 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2401 if (cunit > devcmax) { 2402 PCM_RELEASE_QUICK(d); 2403 return; 2404 } 2405 udcmask |= snd_c2unit(cunit); 2406 CHN_FOREACH(c, d, channels.pcm) { 2407 CHN_LOCK(c); 2408 if (c->unit != udcmask) { 2409 CHN_UNLOCK(c); 2410 continue; 2411 } 2412 CHN_UNLOCK(c); 2413 udcmask &= ~snd_c2unit(cunit); 2414 /* 2415 * Temporarily increase clone maxunit to overcome 2416 * vchan flexibility. 2417 * 2418 * # sysctl dev.pcm.0.play.vchans=256 2419 * dev.pcm.0.play.vchans: 1 -> 256 2420 * # cat /dev/zero > /dev/dsp0.vp255 & 2421 * [1] 17296 2422 * # sysctl dev.pcm.0.play.vchans=0 2423 * dev.pcm.0.play.vchans: 256 -> 1 2424 * # fg 2425 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2426 * ^C 2427 * # cat /dev/zero > /dev/dsp0.vp255 2428 * zsh: operation not supported: /dev/dsp0.vp255 2429 */ 2430 tumax = snd_clone_getmaxunit(d->clones); 2431 if (cunit > tumax) 2432 snd_clone_setmaxunit(d->clones, cunit); 2433 else 2434 tumax = -1; 2435 goto dsp_clone_alloc; 2436 } 2437 /* 2438 * Ok, so we're requesting unallocated vchan, but still 2439 * within maximum vchan limit. 2440 */ 2441 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2442 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2443 cunit < snd_maxautovchans) { 2444 udcmask &= ~snd_c2unit(cunit); 2445 tumax = snd_clone_getmaxunit(d->clones); 2446 if (cunit > tumax) 2447 snd_clone_setmaxunit(d->clones, cunit); 2448 else 2449 tumax = -1; 2450 goto dsp_clone_alloc; 2451 } 2452 PCM_RELEASE_QUICK(d); 2453 return; 2454 } 2455 2456dsp_clone_alloc: 2457 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2458 if (tumax != -1) 2459 snd_clone_setmaxunit(d->clones, tumax); 2460 if (ce != NULL) { 2461 udcmask |= snd_c2unit(cunit); 2462 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2463 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2464 devname, unit, devsep, cunit); 2465 snd_clone_register(ce, *dev); 2466 } 2467 2468 PCM_RELEASE_QUICK(d); 2469 2470 if (*dev != NULL) 2471 dev_ref(*dev); 2472} 2473 2474static void 2475dsp_sysinit(void *p) 2476{ 2477 if (dsp_ehtag != NULL) 2478 return; 2479 /* initialize unit numbering */ 2480 snd_unit_init(); 2481 dsp_umax = PCMMAXUNIT; 2482 dsp_cmax = PCMMAXCHAN; 2483 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2484} 2485 2486static void 2487dsp_sysuninit(void *p) 2488{ 2489 if (dsp_ehtag == NULL) 2490 return; 2491 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2492 dsp_ehtag = NULL; 2493} 2494 2495SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2496SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2497 2498char * 2499dsp_unit2name(char *buf, size_t len, int unit) 2500{ 2501 int i, dtype; 2502 2503 KASSERT(buf != NULL && len != 0, 2504 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2505 2506 dtype = snd_unit2d(unit); 2507 2508 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2509 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2510 continue; 2511 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2512 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2513 return (buf); 2514 } 2515 2516 return (NULL); 2517} 2518 2519/** 2520 * @brief Handler for SNDCTL_AUDIOINFO. 2521 * 2522 * Gathers information about the audio device specified in ai->dev. If 2523 * ai->dev == -1, then this function gathers information about the current 2524 * device. If the call comes in on a non-audio device and ai->dev == -1, 2525 * return EINVAL. 2526 * 2527 * This routine is supposed to go practically straight to the hardware, 2528 * getting capabilities directly from the sound card driver, side-stepping 2529 * the intermediate channel interface. 2530 * 2531 * Note, however, that the usefulness of this command is significantly 2532 * decreased when requesting info about any device other than the one serving 2533 * the request. While each snddev_channel refers to a specific device node, 2534 * the converse is *not* true. Currently, when a sound device node is opened, 2535 * the sound subsystem scans for an available audio channel (or channels, if 2536 * opened in read+write) and then assigns them to the si_drv[12] private 2537 * data fields. As a result, any information returned linking a channel to 2538 * a specific character device isn't necessarily accurate. 2539 * 2540 * @note 2541 * Calling threads must not hold any snddev_info or pcm_channel locks. 2542 * 2543 * @param dev device on which the ioctl was issued 2544 * @param ai ioctl request data container 2545 * 2546 * @retval 0 success 2547 * @retval EINVAL ai->dev specifies an invalid device 2548 * 2549 * @todo Verify correctness of Doxygen tags. ;) 2550 */ 2551int 2552dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2553{ 2554 struct pcmchan_caps *caps; 2555 struct pcm_channel *ch; 2556 struct snddev_info *d; 2557 uint32_t fmts; 2558 int i, nchan, *rates, minch, maxch; 2559 char *devname, buf[CHN_NAMELEN]; 2560 2561 /* 2562 * If probing the device that received the ioctl, make sure it's a 2563 * DSP device. (Users may use this ioctl with /dev/mixer and 2564 * /dev/midi.) 2565 */ 2566 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2567 return (EINVAL); 2568 2569 ch = NULL; 2570 devname = NULL; 2571 nchan = 0; 2572 bzero(buf, sizeof(buf)); 2573 2574 /* 2575 * Search for the requested audio device (channel). Start by 2576 * iterating over pcm devices. 2577 */ 2578 for (i = 0; pcm_devclass != NULL && 2579 i < devclass_get_maxunit(pcm_devclass); i++) { 2580 d = devclass_get_softc(pcm_devclass, i); 2581 if (!PCM_REGISTERED(d)) 2582 continue; 2583 2584 /* XXX Need Giant magic entry ??? */ 2585 2586 /* See the note in function docblock */ 2587 PCM_UNLOCKASSERT(d); 2588 PCM_LOCK(d); 2589 2590 CHN_FOREACH(ch, d, channels.pcm) { 2591 CHN_UNLOCKASSERT(ch); 2592 CHN_LOCK(ch); 2593 if (ai->dev == -1) { 2594 if (DSP_REGISTERED(d, i_dev) && 2595 (ch == PCM_RDCH(i_dev) || /* record ch */ 2596 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2597 devname = dsp_unit2name(buf, 2598 sizeof(buf), ch->unit); 2599 } 2600 } else if (ai->dev == nchan) { 2601 devname = dsp_unit2name(buf, sizeof(buf), 2602 ch->unit); 2603 } 2604 if (devname != NULL) 2605 break; 2606 CHN_UNLOCK(ch); 2607 ++nchan; 2608 } 2609 2610 if (devname != NULL) { 2611 /* 2612 * At this point, the following synchronization stuff 2613 * has happened: 2614 * - a specific PCM device is locked. 2615 * - a specific audio channel has been locked, so be 2616 * sure to unlock when exiting; 2617 */ 2618 2619 caps = chn_getcaps(ch); 2620 2621 /* 2622 * With all handles collected, zero out the user's 2623 * container and begin filling in its fields. 2624 */ 2625 bzero((void *)ai, sizeof(oss_audioinfo)); 2626 2627 ai->dev = nchan; 2628 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2629 2630 if ((ch->flags & CHN_F_BUSY) == 0) 2631 ai->busy = 0; 2632 else 2633 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2634 2635 /** 2636 * @note 2637 * @c cmd - OSSv4 docs: "Only supported under Linux at 2638 * this moment." Cop-out, I know, but I'll save 2639 * running around in the process table for later. 2640 * Is there a risk of leaking information? 2641 */ 2642 ai->pid = ch->pid; 2643 2644 /* 2645 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2646 * Note, however, that a single channel operates in 2647 * only one direction, so PCM_CAP_DUPLEX is out. 2648 */ 2649 /** 2650 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2651 * these in pcmchan::caps? 2652 */ 2653 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2654 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2655 2656 /* 2657 * Collect formats supported @b natively by the 2658 * device. Also determine min/max channels. (I.e., 2659 * mono, stereo, or both?) 2660 * 2661 * If any channel is stereo, maxch = 2; 2662 * if all channels are stereo, minch = 2, too; 2663 * if any channel is mono, minch = 1; 2664 * and if all channels are mono, maxch = 1. 2665 */ 2666 minch = 0; 2667 maxch = 0; 2668 fmts = 0; 2669 for (i = 0; caps->fmtlist[i]; i++) { 2670 fmts |= caps->fmtlist[i]; 2671 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2672 minch = (minch == 0) ? 2 : minch; 2673 maxch = 2; 2674 } else { 2675 minch = 1; 2676 maxch = (maxch == 0) ? 1 : maxch; 2677 } 2678 } 2679 2680 if (ch->direction == PCMDIR_PLAY) 2681 ai->oformats = fmts; 2682 else 2683 ai->iformats = fmts; 2684 2685 /** 2686 * @note 2687 * @c magic - OSSv4 docs: "Reserved for internal use 2688 * by OSS." 2689 * 2690 * @par 2691 * @c card_number - OSSv4 docs: "Number of the sound 2692 * card where this device belongs or -1 if this 2693 * information is not available. Applications 2694 * should normally not use this field for any 2695 * purpose." 2696 */ 2697 ai->card_number = -1; 2698 /** 2699 * @todo @c song_name - depends first on 2700 * SNDCTL_[GS]ETSONG @todo @c label - depends 2701 * on SNDCTL_[GS]ETLABEL 2702 * @todo @c port_number - routing information? 2703 */ 2704 ai->port_number = -1; 2705 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2706 /** 2707 * @note 2708 * @c real_device - OSSv4 docs: "Obsolete." 2709 */ 2710 ai->real_device = -1; 2711 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2712 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2713 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2714 /** 2715 * @note 2716 * @c flags - OSSv4 docs: "Reserved for future use." 2717 * 2718 * @note 2719 * @c binding - OSSv4 docs: "Reserved for future use." 2720 * 2721 * @todo @c handle - haven't decided how to generate 2722 * this yet; bus, vendor, device IDs? 2723 */ 2724 ai->min_rate = caps->minspeed; 2725 ai->max_rate = caps->maxspeed; 2726 2727 ai->min_channels = minch; 2728 ai->max_channels = maxch; 2729 2730 ai->nrates = chn_getrates(ch, &rates); 2731 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2732 ai->nrates = OSS_MAX_SAMPLE_RATES; 2733 2734 for (i = 0; i < ai->nrates; i++) 2735 ai->rates[i] = rates[i]; 2736 2737 ai->next_play_engine = 0; 2738 ai->next_rec_engine = 0; 2739 2740 CHN_UNLOCK(ch); 2741 } 2742 2743 PCM_UNLOCK(d); 2744 2745 if (devname != NULL) 2746 return (0); 2747 } 2748 2749 /* Exhausted the search -- nothing is locked, so return. */ 2750 return (EINVAL); 2751} 2752 2753/** 2754 * @brief Assigns a PCM channel to a sync group. 2755 * 2756 * Sync groups are used to enable audio operations on multiple devices 2757 * simultaneously. They may be used with any number of devices and may 2758 * span across applications. Devices are added to groups with 2759 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2760 * SNDCTL_DSP_SYNCSTART ioctl. 2761 * 2762 * If the @c id field of the @c group parameter is set to zero, then a new 2763 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2764 * the group specified. 2765 * 2766 * @todo As far as memory allocation, should we assume that things are 2767 * okay and allocate with M_WAITOK before acquiring channel locks, 2768 * freeing later if not? 2769 * 2770 * @param wrch output channel associated w/ device (if any) 2771 * @param rdch input channel associated w/ device (if any) 2772 * @param group Sync group parameters 2773 * 2774 * @retval 0 success 2775 * @retval non-zero error to be propagated upstream 2776 */ 2777static int 2778dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2779{ 2780 struct pcmchan_syncmember *smrd, *smwr; 2781 struct pcmchan_syncgroup *sg; 2782 int ret, sg_ids[3]; 2783 2784 smrd = NULL; 2785 smwr = NULL; 2786 sg = NULL; 2787 ret = 0; 2788 2789 /* 2790 * Free_unr() may sleep, so store released syncgroup IDs until after 2791 * all locks are released. 2792 */ 2793 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2794 2795 PCM_SG_LOCK(); 2796 2797 /* 2798 * - Insert channel(s) into group's member list. 2799 * - Set CHN_F_NOTRIGGER on channel(s). 2800 * - Stop channel(s). 2801 */ 2802 2803 /* 2804 * If device's channels are already mapped to a group, unmap them. 2805 */ 2806 if (wrch) { 2807 CHN_LOCK(wrch); 2808 sg_ids[0] = chn_syncdestroy(wrch); 2809 } 2810 2811 if (rdch) { 2812 CHN_LOCK(rdch); 2813 sg_ids[1] = chn_syncdestroy(rdch); 2814 } 2815 2816 /* 2817 * Verify that mode matches character device properites. 2818 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2819 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2820 */ 2821 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2822 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2823 ret = EINVAL; 2824 goto out; 2825 } 2826 2827 /* 2828 * An id of zero indicates the user wants to create a new 2829 * syncgroup. 2830 */ 2831 if (group->id == 0) { 2832 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2833 if (sg != NULL) { 2834 SLIST_INIT(&sg->members); 2835 sg->id = alloc_unr(pcmsg_unrhdr); 2836 2837 group->id = sg->id; 2838 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2839 } else 2840 ret = ENOMEM; 2841 } else { 2842 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2843 if (sg->id == group->id) 2844 break; 2845 } 2846 if (sg == NULL) 2847 ret = EINVAL; 2848 } 2849 2850 /* Couldn't create or find a syncgroup. Fail. */ 2851 if (sg == NULL) 2852 goto out; 2853 2854 /* 2855 * Allocate a syncmember, assign it and a channel together, and 2856 * insert into syncgroup. 2857 */ 2858 if (group->mode & PCM_ENABLE_INPUT) { 2859 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2860 if (smrd == NULL) { 2861 ret = ENOMEM; 2862 goto out; 2863 } 2864 2865 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2866 smrd->parent = sg; 2867 smrd->ch = rdch; 2868 2869 chn_abort(rdch); 2870 rdch->flags |= CHN_F_NOTRIGGER; 2871 rdch->sm = smrd; 2872 } 2873 2874 if (group->mode & PCM_ENABLE_OUTPUT) { 2875 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2876 if (smwr == NULL) { 2877 ret = ENOMEM; 2878 goto out; 2879 } 2880 2881 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2882 smwr->parent = sg; 2883 smwr->ch = wrch; 2884 2885 chn_abort(wrch); 2886 wrch->flags |= CHN_F_NOTRIGGER; 2887 wrch->sm = smwr; 2888 } 2889 2890 2891out: 2892 if (ret != 0) { 2893 if (smrd != NULL) 2894 free(smrd, M_DEVBUF); 2895 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2896 sg_ids[2] = sg->id; 2897 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2898 free(sg, M_DEVBUF); 2899 } 2900 2901 if (wrch) 2902 wrch->sm = NULL; 2903 if (rdch) 2904 rdch->sm = NULL; 2905 } 2906 2907 if (wrch) 2908 CHN_UNLOCK(wrch); 2909 if (rdch) 2910 CHN_UNLOCK(rdch); 2911 2912 PCM_SG_UNLOCK(); 2913 2914 if (sg_ids[0]) 2915 free_unr(pcmsg_unrhdr, sg_ids[0]); 2916 if (sg_ids[1]) 2917 free_unr(pcmsg_unrhdr, sg_ids[1]); 2918 if (sg_ids[2]) 2919 free_unr(pcmsg_unrhdr, sg_ids[2]); 2920 2921 return (ret); 2922} 2923 2924/** 2925 * @brief Launch a sync group into action 2926 * 2927 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2928 * iterates over all members, triggering them along the way. 2929 * 2930 * @note Caller must not hold any channel locks. 2931 * 2932 * @param sg_id sync group identifier 2933 * 2934 * @retval 0 success 2935 * @retval non-zero error worthy of propagating upstream to user 2936 */ 2937static int 2938dsp_oss_syncstart(int sg_id) 2939{ 2940 struct pcmchan_syncmember *sm, *sm_tmp; 2941 struct pcmchan_syncgroup *sg; 2942 struct pcm_channel *c; 2943 int ret, needlocks; 2944 2945 /* Get the synclists lock */ 2946 PCM_SG_LOCK(); 2947 2948 do { 2949 ret = 0; 2950 needlocks = 0; 2951 2952 /* Search for syncgroup by ID */ 2953 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2954 if (sg->id == sg_id) 2955 break; 2956 } 2957 2958 /* Return EINVAL if not found */ 2959 if (sg == NULL) { 2960 ret = EINVAL; 2961 break; 2962 } 2963 2964 /* Any removals resulting in an empty group should've handled this */ 2965 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2966 2967 /* 2968 * Attempt to lock all member channels - if any are already 2969 * locked, unlock those acquired, sleep for a bit, and try 2970 * again. 2971 */ 2972 SLIST_FOREACH(sm, &sg->members, link) { 2973 if (CHN_TRYLOCK(sm->ch) == 0) { 2974 int timo = hz * 5/1000; 2975 if (timo < 1) 2976 timo = 1; 2977 2978 /* Release all locked channels so far, retry */ 2979 SLIST_FOREACH(sm_tmp, &sg->members, link) { 2980 /* sm is the member already locked */ 2981 if (sm == sm_tmp) 2982 break; 2983 CHN_UNLOCK(sm_tmp->ch); 2984 } 2985 2986 /** @todo Is PRIBIO correct/ */ 2987 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 2988 PRIBIO | PCATCH, "pcmsg", timo); 2989 if (ret == EINTR || ret == ERESTART) 2990 break; 2991 2992 needlocks = 1; 2993 ret = 0; /* Assumes ret == EAGAIN... */ 2994 } 2995 } 2996 } while (needlocks && ret == 0); 2997 2998 /* Proceed only if no errors encountered. */ 2999 if (ret == 0) { 3000 /* Launch channels */ 3001 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 3002 SLIST_REMOVE_HEAD(&sg->members, link); 3003 3004 c = sm->ch; 3005 c->sm = NULL; 3006 chn_start(c, 1); 3007 c->flags &= ~CHN_F_NOTRIGGER; 3008 CHN_UNLOCK(c); 3009 3010 free(sm, M_DEVBUF); 3011 } 3012 3013 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3014 free(sg, M_DEVBUF); 3015 } 3016 3017 PCM_SG_UNLOCK(); 3018 3019 /* 3020 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3021 * first. 3022 */ 3023 if (ret == 0) 3024 free_unr(pcmsg_unrhdr, sg_id); 3025 3026 return (ret); 3027} 3028 3029/** 3030 * @brief Handler for SNDCTL_DSP_POLICY 3031 * 3032 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3033 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3034 * specifying those two parameters, s/he simply selects a number from 0..10 3035 * which corresponds to a buffer size. Smaller numbers request smaller 3036 * buffers with lower latencies (at greater overhead from more frequent 3037 * interrupts), while greater numbers behave in the opposite manner. 3038 * 3039 * The 4Front spec states that a value of 5 should be the default. However, 3040 * this implementation deviates slightly by using a linear scale without 3041 * consulting drivers. I.e., even though drivers may have different default 3042 * buffer sizes, a policy argument of 5 will have the same result across 3043 * all drivers. 3044 * 3045 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3046 * more information. 3047 * 3048 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3049 * work with hardware drivers directly. 3050 * 3051 * @note PCM channel arguments must not be locked by caller. 3052 * 3053 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3054 * @param rdch " recording channel (optional; may be NULL) 3055 * @param policy Integer from [0:10] 3056 * 3057 * @retval 0 constant (for now) 3058 */ 3059static int 3060dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3061{ 3062 int ret; 3063 3064 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3065 return (EIO); 3066 3067 /* Default: success */ 3068 ret = 0; 3069 3070 if (rdch) { 3071 CHN_LOCK(rdch); 3072 ret = chn_setlatency(rdch, policy); 3073 CHN_UNLOCK(rdch); 3074 } 3075 3076 if (wrch && ret == 0) { 3077 CHN_LOCK(wrch); 3078 ret = chn_setlatency(wrch, policy); 3079 CHN_UNLOCK(wrch); 3080 } 3081 3082 if (ret) 3083 ret = EIO; 3084 3085 return (ret); 3086} 3087 3088/** 3089 * @brief Enable or disable "cooked" mode 3090 * 3091 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3092 * is the default, the sound system handles rate and format conversions 3093 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3094 * operates with 44100Hz/16bit/signed samples). 3095 * 3096 * Disabling cooked mode is intended for applications wanting to mmap() 3097 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3098 * feeder architecture, presumably to gain as much control over audio 3099 * hardware as possible. 3100 * 3101 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3102 * for more details. 3103 * 3104 * @param wrch playback channel (optional; may be NULL) 3105 * @param rdch recording channel (optional; may be NULL) 3106 * @param enabled 0 = raw mode, 1 = cooked mode 3107 * 3108 * @retval EINVAL Operation not yet supported. 3109 */ 3110static int 3111dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3112{ 3113 3114 /* 3115 * XXX I just don't get it. Why don't they call it 3116 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3117 * This is just plain so confusing, incoherent, 3118 * <insert any non-printable characters here>. 3119 */ 3120 if (!(enabled == 1 || enabled == 0)) 3121 return (EINVAL); 3122 3123 /* 3124 * I won't give in. I'm inverting its logic here and now. 3125 * Brag all you want, but "BITPERFECT" should be the better 3126 * term here. 3127 */ 3128 enabled ^= 0x00000001; 3129 3130 if (wrch != NULL) { 3131 CHN_LOCK(wrch); 3132 wrch->flags &= ~CHN_F_BITPERFECT; 3133 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3134 CHN_UNLOCK(wrch); 3135 } 3136 3137 if (rdch != NULL) { 3138 CHN_LOCK(rdch); 3139 rdch->flags &= ~CHN_F_BITPERFECT; 3140 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3141 CHN_UNLOCK(rdch); 3142 } 3143 3144 return (0); 3145} 3146 3147/** 3148 * @brief Retrieve channel interleaving order 3149 * 3150 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3151 * 3152 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3153 * for more details. 3154 * 3155 * @note As the ioctl definition is still under construction, FreeBSD 3156 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3157 * 3158 * @param wrch playback channel (optional; may be NULL) 3159 * @param rdch recording channel (optional; may be NULL) 3160 * @param map channel map (result will be stored there) 3161 * 3162 * @retval EINVAL Operation not yet supported. 3163 */ 3164static int 3165dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3166{ 3167 struct pcm_channel *ch; 3168 int ret; 3169 3170 ch = (wrch != NULL) ? wrch : rdch; 3171 if (ch != NULL) { 3172 CHN_LOCK(ch); 3173 ret = chn_oss_getorder(ch, map); 3174 CHN_UNLOCK(ch); 3175 } else 3176 ret = EINVAL; 3177 3178 return (ret); 3179} 3180 3181/** 3182 * @brief Specify channel interleaving order 3183 * 3184 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3185 * 3186 * @note As the ioctl definition is still under construction, FreeBSD 3187 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3188 * 3189 * @param wrch playback channel (optional; may be NULL) 3190 * @param rdch recording channel (optional; may be NULL) 3191 * @param map channel map 3192 * 3193 * @retval EINVAL Operation not yet supported. 3194 */ 3195static int 3196dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3197{ 3198 int ret; 3199 3200 ret = 0; 3201 3202 if (wrch != NULL) { 3203 CHN_LOCK(wrch); 3204 ret = chn_oss_setorder(wrch, map); 3205 CHN_UNLOCK(wrch); 3206 } 3207 3208 if (ret == 0 && rdch != NULL) { 3209 CHN_LOCK(rdch); 3210 ret = chn_oss_setorder(rdch, map); 3211 CHN_UNLOCK(rdch); 3212 } 3213 3214 return (ret); 3215} 3216 3217static int 3218dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3219 int *mask) 3220{ 3221 struct pcm_channel *ch; 3222 uint32_t chnmask; 3223 int ret; 3224 3225 chnmask = 0; 3226 ch = (wrch != NULL) ? wrch : rdch; 3227 3228 if (ch != NULL) { 3229 CHN_LOCK(ch); 3230 ret = chn_oss_getmask(ch, &chnmask); 3231 CHN_UNLOCK(ch); 3232 } else 3233 ret = EINVAL; 3234 3235 if (ret == 0) 3236 *mask = chnmask; 3237 3238 return (ret); 3239} 3240 3241#ifdef OSSV4_EXPERIMENT 3242/** 3243 * @brief Retrieve an audio device's label 3244 * 3245 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3246 * 3247 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3248 * for more details. 3249 * 3250 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3251 * consoles) can show variable "labels" for certain controls. By default 3252 * the application name (say quake) is shown as the label but 3253 * applications may change the labels themselves." 3254 * 3255 * @note As the ioctl definition is still under construction, FreeBSD 3256 * does not currently support @c SNDCTL_GETLABEL. 3257 * 3258 * @param wrch playback channel (optional; may be NULL) 3259 * @param rdch recording channel (optional; may be NULL) 3260 * @param label label gets copied here 3261 * 3262 * @retval EINVAL Operation not yet supported. 3263 */ 3264static int 3265dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3266{ 3267 return (EINVAL); 3268} 3269 3270/** 3271 * @brief Specify an audio device's label 3272 * 3273 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3274 * comments for @c dsp_oss_getlabel immediately above. 3275 * 3276 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3277 * for more details. 3278 * 3279 * @note As the ioctl definition is still under construction, FreeBSD 3280 * does not currently support SNDCTL_SETLABEL. 3281 * 3282 * @param wrch playback channel (optional; may be NULL) 3283 * @param rdch recording channel (optional; may be NULL) 3284 * @param label label gets copied from here 3285 * 3286 * @retval EINVAL Operation not yet supported. 3287 */ 3288static int 3289dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3290{ 3291 return (EINVAL); 3292} 3293 3294/** 3295 * @brief Retrieve name of currently played song 3296 * 3297 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3298 * tell the system the name of the currently playing song, which would be 3299 * visible in @c /dev/sndstat. 3300 * 3301 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3302 * for more details. 3303 * 3304 * @note As the ioctl definition is still under construction, FreeBSD 3305 * does not currently support SNDCTL_GETSONG. 3306 * 3307 * @param wrch playback channel (optional; may be NULL) 3308 * @param rdch recording channel (optional; may be NULL) 3309 * @param song song name gets copied here 3310 * 3311 * @retval EINVAL Operation not yet supported. 3312 */ 3313static int 3314dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3315{ 3316 return (EINVAL); 3317} 3318 3319/** 3320 * @brief Retrieve name of currently played song 3321 * 3322 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3323 * tell the system the name of the currently playing song, which would be 3324 * visible in @c /dev/sndstat. 3325 * 3326 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3327 * for more details. 3328 * 3329 * @note As the ioctl definition is still under construction, FreeBSD 3330 * does not currently support SNDCTL_SETSONG. 3331 * 3332 * @param wrch playback channel (optional; may be NULL) 3333 * @param rdch recording channel (optional; may be NULL) 3334 * @param song song name gets copied from here 3335 * 3336 * @retval EINVAL Operation not yet supported. 3337 */ 3338static int 3339dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3340{ 3341 return (EINVAL); 3342} 3343 3344/** 3345 * @brief Rename a device 3346 * 3347 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3348 * 3349 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3350 * more details. 3351 * 3352 * From Hannu@4Front: "This call is used to change the device name 3353 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3354 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3355 * name depending on the current context (for example 'OSS virtual wave table 3356 * synth' or 'VoIP link to London')." 3357 * 3358 * @note As the ioctl definition is still under construction, FreeBSD 3359 * does not currently support SNDCTL_SETNAME. 3360 * 3361 * @param wrch playback channel (optional; may be NULL) 3362 * @param rdch recording channel (optional; may be NULL) 3363 * @param name new device name gets copied from here 3364 * 3365 * @retval EINVAL Operation not yet supported. 3366 */ 3367static int 3368dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3369{ 3370 return (EINVAL); 3371} 3372#endif /* !OSSV4_EXPERIMENT */ 3373