dsp.c revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 5 * Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006 6 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#ifdef HAVE_KERNEL_OPTION_HEADERS 32#include "opt_snd.h" 33#endif 34 35#include <dev/sound/pcm/sound.h> 36#include <sys/ctype.h> 37#include <sys/lock.h> 38#include <sys/rwlock.h> 39#include <sys/sysent.h> 40 41#include <vm/vm.h> 42#include <vm/vm_object.h> 43#include <vm/vm_page.h> 44#include <vm/vm_pager.h> 45 46SND_DECLARE_FILE("$FreeBSD: stable/11/sys/dev/sound/pcm/dsp.c 330897 2018-03-14 03:19:51Z eadler $"); 47 48static int dsp_mmap_allow_prot_exec = 0; 49SYSCTL_INT(_hw_snd, OID_AUTO, compat_linux_mmap, CTLFLAG_RWTUN, 50 &dsp_mmap_allow_prot_exec, 0, 51 "linux mmap compatibility (-1=force disable 0=auto 1=force enable)"); 52 53static int dsp_basename_clone = 1; 54SYSCTL_INT(_hw_snd, OID_AUTO, basename_clone, CTLFLAG_RWTUN, 55 &dsp_basename_clone, 0, 56 "DSP basename cloning (0: Disable; 1: Enabled)"); 57 58struct dsp_cdevinfo { 59 struct pcm_channel *rdch, *wrch; 60 struct pcm_channel *volch; 61 int busy, simplex; 62 TAILQ_ENTRY(dsp_cdevinfo) link; 63}; 64 65#define PCM_RDCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->rdch) 66#define PCM_WRCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->wrch) 67#define PCM_VOLCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->volch) 68#define PCM_SIMPLEX(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->simplex) 69 70#define DSP_CDEVINFO_CACHESIZE 8 71 72#define DSP_REGISTERED(x, y) (PCM_REGISTERED(x) && \ 73 (y) != NULL && (y)->si_drv1 != NULL) 74 75#define OLDPCM_IOCTL 76 77static d_open_t dsp_open; 78static d_close_t dsp_close; 79static d_read_t dsp_read; 80static d_write_t dsp_write; 81static d_ioctl_t dsp_ioctl; 82static d_poll_t dsp_poll; 83static d_mmap_t dsp_mmap; 84static d_mmap_single_t dsp_mmap_single; 85 86struct cdevsw dsp_cdevsw = { 87 .d_version = D_VERSION, 88 .d_open = dsp_open, 89 .d_close = dsp_close, 90 .d_read = dsp_read, 91 .d_write = dsp_write, 92 .d_ioctl = dsp_ioctl, 93 .d_poll = dsp_poll, 94 .d_mmap = dsp_mmap, 95 .d_mmap_single = dsp_mmap_single, 96 .d_name = "dsp", 97}; 98 99static eventhandler_tag dsp_ehtag = NULL; 100static int dsp_umax = -1; 101static int dsp_cmax = -1; 102 103static int dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group); 104static int dsp_oss_syncstart(int sg_id); 105static int dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy); 106static int dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled); 107static int dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 108static int dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 109static int dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, int *mask); 110#ifdef OSSV4_EXPERIMENT 111static int dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 112static int dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 113static int dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 114static int dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 115static int dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name); 116#endif 117 118static struct snddev_info * 119dsp_get_info(struct cdev *dev) 120{ 121 return (devclass_get_softc(pcm_devclass, PCMUNIT(dev))); 122} 123 124static uint32_t 125dsp_get_flags(struct cdev *dev) 126{ 127 device_t bdev; 128 129 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 130 131 return ((bdev != NULL) ? pcm_getflags(bdev) : 0xffffffff); 132} 133 134static void 135dsp_set_flags(struct cdev *dev, uint32_t flags) 136{ 137 device_t bdev; 138 139 bdev = devclass_get_device(pcm_devclass, PCMUNIT(dev)); 140 141 if (bdev != NULL) 142 pcm_setflags(bdev, flags); 143} 144 145/* 146 * return the channels associated with an open device instance. 147 * lock channels specified. 148 */ 149static int 150getchns(struct cdev *dev, struct pcm_channel **rdch, struct pcm_channel **wrch, 151 uint32_t prio) 152{ 153 struct snddev_info *d; 154 struct pcm_channel *ch; 155 uint32_t flags; 156 157 if (PCM_SIMPLEX(dev) != 0) { 158 d = dsp_get_info(dev); 159 if (!PCM_REGISTERED(d)) 160 return (ENXIO); 161 PCM_LOCK(d); 162 PCM_WAIT(d); 163 PCM_ACQUIRE(d); 164 /* 165 * Note: order is important - 166 * pcm flags -> prio query flags -> wild guess 167 */ 168 ch = NULL; 169 flags = dsp_get_flags(dev); 170 if (flags & SD_F_PRIO_WR) { 171 ch = PCM_RDCH(dev); 172 PCM_RDCH(dev) = NULL; 173 } else if (flags & SD_F_PRIO_RD) { 174 ch = PCM_WRCH(dev); 175 PCM_WRCH(dev) = NULL; 176 } else if (prio & SD_F_PRIO_WR) { 177 ch = PCM_RDCH(dev); 178 PCM_RDCH(dev) = NULL; 179 flags |= SD_F_PRIO_WR; 180 } else if (prio & SD_F_PRIO_RD) { 181 ch = PCM_WRCH(dev); 182 PCM_WRCH(dev) = NULL; 183 flags |= SD_F_PRIO_RD; 184 } else if (PCM_WRCH(dev) != NULL) { 185 ch = PCM_RDCH(dev); 186 PCM_RDCH(dev) = NULL; 187 flags |= SD_F_PRIO_WR; 188 } else if (PCM_RDCH(dev) != NULL) { 189 ch = PCM_WRCH(dev); 190 PCM_WRCH(dev) = NULL; 191 flags |= SD_F_PRIO_RD; 192 } 193 PCM_SIMPLEX(dev) = 0; 194 dsp_set_flags(dev, flags); 195 if (ch != NULL) { 196 CHN_LOCK(ch); 197 pcm_chnref(ch, -1); 198 pcm_chnrelease(ch); 199 } 200 PCM_RELEASE(d); 201 PCM_UNLOCK(d); 202 } 203 204 *rdch = PCM_RDCH(dev); 205 *wrch = PCM_WRCH(dev); 206 207 if (*rdch != NULL && (prio & SD_F_PRIO_RD)) 208 CHN_LOCK(*rdch); 209 if (*wrch != NULL && (prio & SD_F_PRIO_WR)) 210 CHN_LOCK(*wrch); 211 212 return (0); 213} 214 215/* unlock specified channels */ 216static void 217relchns(struct cdev *dev, struct pcm_channel *rdch, struct pcm_channel *wrch, 218 uint32_t prio) 219{ 220 if (wrch != NULL && (prio & SD_F_PRIO_WR)) 221 CHN_UNLOCK(wrch); 222 if (rdch != NULL && (prio & SD_F_PRIO_RD)) 223 CHN_UNLOCK(rdch); 224} 225 226static void 227dsp_cdevinfo_alloc(struct cdev *dev, 228 struct pcm_channel *rdch, struct pcm_channel *wrch, 229 struct pcm_channel *volch) 230{ 231 struct snddev_info *d; 232 struct dsp_cdevinfo *cdi; 233 int simplex; 234 235 d = dsp_get_info(dev); 236 237 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 == NULL && 238 ((rdch == NULL && wrch == NULL) || rdch != wrch), 239 ("bogus %s(), what are you trying to accomplish here?", __func__)); 240 PCM_BUSYASSERT(d); 241 PCM_LOCKASSERT(d); 242 243 simplex = (dsp_get_flags(dev) & SD_F_SIMPLEX) ? 1 : 0; 244 245 /* 246 * Scan for free instance entry and put it into the end of list. 247 * Create new one if necessary. 248 */ 249 TAILQ_FOREACH(cdi, &d->dsp_cdevinfo_pool, link) { 250 if (cdi->busy != 0) 251 break; 252 cdi->rdch = rdch; 253 cdi->wrch = wrch; 254 cdi->volch = volch; 255 cdi->simplex = simplex; 256 cdi->busy = 1; 257 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 258 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 259 dev->si_drv1 = cdi; 260 return; 261 } 262 PCM_UNLOCK(d); 263 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 264 PCM_LOCK(d); 265 cdi->rdch = rdch; 266 cdi->wrch = wrch; 267 cdi->volch = volch; 268 cdi->simplex = simplex; 269 cdi->busy = 1; 270 TAILQ_INSERT_TAIL(&d->dsp_cdevinfo_pool, cdi, link); 271 dev->si_drv1 = cdi; 272} 273 274static void 275dsp_cdevinfo_free(struct cdev *dev) 276{ 277 struct snddev_info *d; 278 struct dsp_cdevinfo *cdi, *tmp; 279 uint32_t flags; 280 int i; 281 282 d = dsp_get_info(dev); 283 284 KASSERT(PCM_REGISTERED(d) && dev != NULL && dev->si_drv1 != NULL && 285 PCM_RDCH(dev) == NULL && PCM_WRCH(dev) == NULL && 286 PCM_VOLCH(dev) == NULL, 287 ("bogus %s(), what are you trying to accomplish here?", __func__)); 288 PCM_BUSYASSERT(d); 289 PCM_LOCKASSERT(d); 290 291 cdi = dev->si_drv1; 292 dev->si_drv1 = NULL; 293 cdi->rdch = NULL; 294 cdi->wrch = NULL; 295 cdi->volch = NULL; 296 cdi->simplex = 0; 297 cdi->busy = 0; 298 299 /* 300 * Once it is free, move it back to the beginning of list for 301 * faster new entry allocation. 302 */ 303 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 304 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 305 306 /* 307 * Scan the list, cache free entries up to DSP_CDEVINFO_CACHESIZE. 308 * Reset simplex flags. 309 */ 310 flags = dsp_get_flags(dev) & ~SD_F_PRIO_SET; 311 i = DSP_CDEVINFO_CACHESIZE; 312 TAILQ_FOREACH_SAFE(cdi, &d->dsp_cdevinfo_pool, link, tmp) { 313 if (cdi->busy != 0) { 314 if (cdi->simplex == 0) { 315 if (cdi->rdch != NULL) 316 flags |= SD_F_PRIO_RD; 317 if (cdi->wrch != NULL) 318 flags |= SD_F_PRIO_WR; 319 } 320 } else { 321 if (i == 0) { 322 TAILQ_REMOVE(&d->dsp_cdevinfo_pool, cdi, link); 323 free(cdi, M_DEVBUF); 324 } else 325 i--; 326 } 327 } 328 dsp_set_flags(dev, flags); 329} 330 331void 332dsp_cdevinfo_init(struct snddev_info *d) 333{ 334 struct dsp_cdevinfo *cdi; 335 int i; 336 337 KASSERT(d != NULL, ("NULL snddev_info")); 338 PCM_BUSYASSERT(d); 339 PCM_UNLOCKASSERT(d); 340 341 TAILQ_INIT(&d->dsp_cdevinfo_pool); 342 for (i = 0; i < DSP_CDEVINFO_CACHESIZE; i++) { 343 cdi = malloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 344 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 345 } 346} 347 348void 349dsp_cdevinfo_flush(struct snddev_info *d) 350{ 351 struct dsp_cdevinfo *cdi, *tmp; 352 353 KASSERT(d != NULL, ("NULL snddev_info")); 354 PCM_BUSYASSERT(d); 355 PCM_UNLOCKASSERT(d); 356 357 cdi = TAILQ_FIRST(&d->dsp_cdevinfo_pool); 358 while (cdi != NULL) { 359 tmp = TAILQ_NEXT(cdi, link); 360 free(cdi, M_DEVBUF); 361 cdi = tmp; 362 } 363 TAILQ_INIT(&d->dsp_cdevinfo_pool); 364} 365 366/* duplex / simplex cdev type */ 367enum { 368 DSP_CDEV_TYPE_RDONLY, /* simplex read-only (record) */ 369 DSP_CDEV_TYPE_WRONLY, /* simplex write-only (play) */ 370 DSP_CDEV_TYPE_RDWR /* duplex read, write, or both */ 371}; 372 373enum { 374 DSP_CDEV_VOLCTL_NONE, 375 DSP_CDEV_VOLCTL_READ, 376 DSP_CDEV_VOLCTL_WRITE 377}; 378 379#define DSP_F_VALID(x) ((x) & (FREAD | FWRITE)) 380#define DSP_F_DUPLEX(x) (((x) & (FREAD | FWRITE)) == (FREAD | FWRITE)) 381#define DSP_F_SIMPLEX(x) (!DSP_F_DUPLEX(x)) 382#define DSP_F_READ(x) ((x) & FREAD) 383#define DSP_F_WRITE(x) ((x) & FWRITE) 384 385static const struct { 386 int type; 387 char *name; 388 char *sep; 389 char *alias; 390 int use_sep; 391 int hw; 392 int max; 393 int volctl; 394 uint32_t fmt, spd; 395 int query; 396} dsp_cdevs[] = { 397 { SND_DEV_DSP, "dsp", ".", NULL, 0, 0, 0, 0, 398 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 399 DSP_CDEV_TYPE_RDWR }, 400 { SND_DEV_AUDIO, "audio", ".", NULL, 0, 0, 0, 0, 401 SND_FORMAT(AFMT_MU_LAW, 1, 0), DSP_DEFAULT_SPEED, 402 DSP_CDEV_TYPE_RDWR }, 403 { SND_DEV_DSP16, "dspW", ".", NULL, 0, 0, 0, 0, 404 SND_FORMAT(AFMT_S16_LE, 1, 0), DSP_DEFAULT_SPEED, 405 DSP_CDEV_TYPE_RDWR }, 406 { SND_DEV_DSPHW_PLAY, "dsp", ".p", NULL, 1, 1, SND_MAXHWCHAN, 1, 407 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 408 { SND_DEV_DSPHW_VPLAY, "dsp", ".vp", NULL, 1, 1, SND_MAXVCHANS, 1, 409 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_WRONLY }, 410 { SND_DEV_DSPHW_REC, "dsp", ".r", NULL, 1, 1, SND_MAXHWCHAN, 1, 411 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 412 { SND_DEV_DSPHW_VREC, "dsp", ".vr", NULL, 1, 1, SND_MAXVCHANS, 1, 413 SND_FORMAT(AFMT_S16_LE, 2, 0), 48000, DSP_CDEV_TYPE_RDONLY }, 414 { SND_DEV_DSPHW_CD, "dspcd", ".", NULL, 0, 0, 0, 0, 415 SND_FORMAT(AFMT_S16_LE, 2, 0), 44100, DSP_CDEV_TYPE_RDWR }, 416 /* Low priority, OSSv4 aliases. */ 417 { SND_DEV_DSP, "dsp_ac3", ".", "dsp", 0, 0, 0, 0, 418 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 419 DSP_CDEV_TYPE_RDWR }, 420 { SND_DEV_DSP, "dsp_mmap", ".", "dsp", 0, 0, 0, 0, 421 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 422 DSP_CDEV_TYPE_RDWR }, 423 { SND_DEV_DSP, "dsp_multich", ".", "dsp", 0, 0, 0, 0, 424 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 425 DSP_CDEV_TYPE_RDWR }, 426 { SND_DEV_DSP, "dsp_spdifout", ".", "dsp", 0, 0, 0, 0, 427 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 428 DSP_CDEV_TYPE_RDWR }, 429 { SND_DEV_DSP, "dsp_spdifin", ".", "dsp", 0, 0, 0, 0, 430 SND_FORMAT(AFMT_U8, 1, 0), DSP_DEFAULT_SPEED, 431 DSP_CDEV_TYPE_RDWR }, 432}; 433 434#define DSP_FIXUP_ERROR() do { \ 435 prio = dsp_get_flags(i_dev); \ 436 if (!DSP_F_VALID(flags)) \ 437 error = EINVAL; \ 438 if (!DSP_F_DUPLEX(flags) && \ 439 ((DSP_F_READ(flags) && d->reccount == 0) || \ 440 (DSP_F_WRITE(flags) && d->playcount == 0))) \ 441 error = ENOTSUP; \ 442 else if (!DSP_F_DUPLEX(flags) && (prio & SD_F_SIMPLEX) && \ 443 ((DSP_F_READ(flags) && (prio & SD_F_PRIO_WR)) || \ 444 (DSP_F_WRITE(flags) && (prio & SD_F_PRIO_RD)))) \ 445 error = EBUSY; \ 446 else if (DSP_REGISTERED(d, i_dev)) \ 447 error = EBUSY; \ 448} while (0) 449 450static int 451dsp_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 452{ 453 struct pcm_channel *rdch, *wrch; 454 struct snddev_info *d; 455 uint32_t fmt, spd, prio, volctl; 456 int i, error, rderror, wrerror, devtype, wdevunit, rdevunit; 457 458 /* Kind of impossible.. */ 459 if (i_dev == NULL || td == NULL) 460 return (ENODEV); 461 462 d = dsp_get_info(i_dev); 463 if (!PCM_REGISTERED(d)) 464 return (EBADF); 465 466 PCM_GIANT_ENTER(d); 467 468 /* Lock snddev so nobody else can monkey with it. */ 469 PCM_LOCK(d); 470 PCM_WAIT(d); 471 472 /* 473 * Try to acquire cloned device before someone else pick it. 474 * ENODEV means this is not a cloned droids. 475 */ 476 error = snd_clone_acquire(i_dev); 477 if (!(error == 0 || error == ENODEV)) { 478 DSP_FIXUP_ERROR(); 479 PCM_UNLOCK(d); 480 PCM_GIANT_EXIT(d); 481 return (error); 482 } 483 484 error = 0; 485 DSP_FIXUP_ERROR(); 486 487 if (error != 0) { 488 (void)snd_clone_release(i_dev); 489 PCM_UNLOCK(d); 490 PCM_GIANT_EXIT(d); 491 return (error); 492 } 493 494 /* 495 * That is just enough. Acquire and unlock pcm lock so 496 * the other will just have to wait until we finish doing 497 * everything. 498 */ 499 PCM_ACQUIRE(d); 500 PCM_UNLOCK(d); 501 502 devtype = PCMDEV(i_dev); 503 wdevunit = -1; 504 rdevunit = -1; 505 fmt = 0; 506 spd = 0; 507 volctl = DSP_CDEV_VOLCTL_NONE; 508 509 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 510 if (devtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 511 continue; 512 /* 513 * Volume control only valid for DSPHW devices, 514 * and it must be opened in opposite direction be it 515 * simplex or duplex. Anything else will be handled 516 * as usual. 517 */ 518 if (dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY) { 519 if (dsp_cdevs[i].volctl != 0 && 520 DSP_F_READ(flags)) { 521 volctl = DSP_CDEV_VOLCTL_WRITE; 522 flags &= ~FREAD; 523 flags |= FWRITE; 524 } 525 if (DSP_F_READ(flags)) { 526 (void)snd_clone_release(i_dev); 527 PCM_RELEASE_QUICK(d); 528 PCM_GIANT_EXIT(d); 529 return (ENOTSUP); 530 } 531 wdevunit = dev2unit(i_dev); 532 } else if (dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY) { 533 if (dsp_cdevs[i].volctl != 0 && 534 DSP_F_WRITE(flags)) { 535 volctl = DSP_CDEV_VOLCTL_READ; 536 flags &= ~FWRITE; 537 flags |= FREAD; 538 } 539 if (DSP_F_WRITE(flags)) { 540 (void)snd_clone_release(i_dev); 541 PCM_RELEASE_QUICK(d); 542 PCM_GIANT_EXIT(d); 543 return (ENOTSUP); 544 } 545 rdevunit = dev2unit(i_dev); 546 } 547 fmt = dsp_cdevs[i].fmt; 548 spd = dsp_cdevs[i].spd; 549 break; 550 } 551 552 /* No matching devtype? */ 553 if (fmt == 0 || spd == 0) 554 panic("impossible devtype %d", devtype); 555 556 rdch = NULL; 557 wrch = NULL; 558 rderror = 0; 559 wrerror = 0; 560 561 /* 562 * if we get here, the open request is valid- either: 563 * * we were previously not open 564 * * we were open for play xor record and the opener wants 565 * the non-open direction 566 */ 567 if (DSP_F_READ(flags)) { 568 /* open for read */ 569 rderror = pcm_chnalloc(d, &rdch, PCMDIR_REC, 570 td->td_proc->p_pid, td->td_proc->p_comm, rdevunit); 571 572 if (rderror == 0 && chn_reset(rdch, fmt, spd) != 0) 573 rderror = ENXIO; 574 575 if (volctl == DSP_CDEV_VOLCTL_READ) 576 rderror = 0; 577 578 if (rderror != 0) { 579 if (rdch != NULL) 580 pcm_chnrelease(rdch); 581 if (!DSP_F_DUPLEX(flags)) { 582 (void)snd_clone_release(i_dev); 583 PCM_RELEASE_QUICK(d); 584 PCM_GIANT_EXIT(d); 585 return (rderror); 586 } 587 rdch = NULL; 588 } else if (volctl == DSP_CDEV_VOLCTL_READ) { 589 if (rdch != NULL) { 590 pcm_chnref(rdch, 1); 591 pcm_chnrelease(rdch); 592 } 593 } else { 594 if (flags & O_NONBLOCK) 595 rdch->flags |= CHN_F_NBIO; 596 if (flags & O_EXCL) 597 rdch->flags |= CHN_F_EXCLUSIVE; 598 pcm_chnref(rdch, 1); 599 if (volctl == DSP_CDEV_VOLCTL_NONE) 600 chn_vpc_reset(rdch, SND_VOL_C_PCM, 0); 601 CHN_UNLOCK(rdch); 602 } 603 } 604 605 if (DSP_F_WRITE(flags)) { 606 /* open for write */ 607 wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY, 608 td->td_proc->p_pid, td->td_proc->p_comm, wdevunit); 609 610 if (wrerror == 0 && chn_reset(wrch, fmt, spd) != 0) 611 wrerror = ENXIO; 612 613 if (volctl == DSP_CDEV_VOLCTL_WRITE) 614 wrerror = 0; 615 616 if (wrerror != 0) { 617 if (wrch != NULL) 618 pcm_chnrelease(wrch); 619 if (!DSP_F_DUPLEX(flags)) { 620 if (rdch != NULL) { 621 /* 622 * Lock, deref and release previously 623 * created record channel 624 */ 625 CHN_LOCK(rdch); 626 pcm_chnref(rdch, -1); 627 pcm_chnrelease(rdch); 628 } 629 (void)snd_clone_release(i_dev); 630 PCM_RELEASE_QUICK(d); 631 PCM_GIANT_EXIT(d); 632 return (wrerror); 633 } 634 wrch = NULL; 635 } else if (volctl == DSP_CDEV_VOLCTL_WRITE) { 636 if (wrch != NULL) { 637 pcm_chnref(wrch, 1); 638 pcm_chnrelease(wrch); 639 } 640 } else { 641 if (flags & O_NONBLOCK) 642 wrch->flags |= CHN_F_NBIO; 643 if (flags & O_EXCL) 644 wrch->flags |= CHN_F_EXCLUSIVE; 645 pcm_chnref(wrch, 1); 646 if (volctl == DSP_CDEV_VOLCTL_NONE) 647 chn_vpc_reset(wrch, SND_VOL_C_PCM, 0); 648 CHN_UNLOCK(wrch); 649 } 650 } 651 652 653 PCM_LOCK(d); 654 655 /* 656 * We're done. Allocate channels information for this cdev. 657 */ 658 switch (volctl) { 659 case DSP_CDEV_VOLCTL_READ: 660 KASSERT(wrch == NULL, ("wrch=%p not null!", wrch)); 661 dsp_cdevinfo_alloc(i_dev, NULL, NULL, rdch); 662 break; 663 case DSP_CDEV_VOLCTL_WRITE: 664 KASSERT(rdch == NULL, ("rdch=%p not null!", rdch)); 665 dsp_cdevinfo_alloc(i_dev, NULL, NULL, wrch); 666 break; 667 case DSP_CDEV_VOLCTL_NONE: 668 default: 669 if (wrch == NULL && rdch == NULL) { 670 (void)snd_clone_release(i_dev); 671 PCM_RELEASE(d); 672 PCM_UNLOCK(d); 673 PCM_GIANT_EXIT(d); 674 if (wrerror != 0) 675 return (wrerror); 676 if (rderror != 0) 677 return (rderror); 678 return (EINVAL); 679 } 680 dsp_cdevinfo_alloc(i_dev, rdch, wrch, NULL); 681 if (rdch != NULL) 682 CHN_INSERT_HEAD(d, rdch, channels.pcm.opened); 683 if (wrch != NULL) 684 CHN_INSERT_HEAD(d, wrch, channels.pcm.opened); 685 break; 686 } 687 688 /* 689 * Increase clone refcount for its automatic garbage collector. 690 */ 691 (void)snd_clone_ref(i_dev); 692 693 PCM_RELEASE(d); 694 PCM_UNLOCK(d); 695 696 PCM_GIANT_LEAVE(d); 697 698 return (0); 699} 700 701static int 702dsp_close(struct cdev *i_dev, int flags, int mode, struct thread *td) 703{ 704 struct pcm_channel *rdch, *wrch, *volch; 705 struct snddev_info *d; 706 int sg_ids, rdref, wdref; 707 708 d = dsp_get_info(i_dev); 709 if (!DSP_REGISTERED(d, i_dev)) 710 return (EBADF); 711 712 PCM_GIANT_ENTER(d); 713 714 PCM_LOCK(d); 715 PCM_WAIT(d); 716 PCM_ACQUIRE(d); 717 718 rdch = PCM_RDCH(i_dev); 719 wrch = PCM_WRCH(i_dev); 720 volch = PCM_VOLCH(i_dev); 721 722 PCM_RDCH(i_dev) = NULL; 723 PCM_WRCH(i_dev) = NULL; 724 PCM_VOLCH(i_dev) = NULL; 725 726 rdref = -1; 727 wdref = -1; 728 729 if (volch != NULL) { 730 if (volch == rdch) 731 rdref--; 732 else if (volch == wrch) 733 wdref--; 734 else { 735 CHN_LOCK(volch); 736 pcm_chnref(volch, -1); 737 CHN_UNLOCK(volch); 738 } 739 } 740 741 if (rdch != NULL) 742 CHN_REMOVE(d, rdch, channels.pcm.opened); 743 if (wrch != NULL) 744 CHN_REMOVE(d, wrch, channels.pcm.opened); 745 746 if (rdch != NULL || wrch != NULL) { 747 PCM_UNLOCK(d); 748 if (rdch != NULL) { 749 /* 750 * The channel itself need not be locked because: 751 * a) Adding a channel to a syncgroup happens only 752 * in dsp_ioctl(), which cannot run concurrently 753 * to dsp_close(). 754 * b) The syncmember pointer (sm) is protected by 755 * the global syncgroup list lock. 756 * c) A channel can't just disappear, invalidating 757 * pointers, unless it's closed/dereferenced 758 * first. 759 */ 760 PCM_SG_LOCK(); 761 sg_ids = chn_syncdestroy(rdch); 762 PCM_SG_UNLOCK(); 763 if (sg_ids != 0) 764 free_unr(pcmsg_unrhdr, sg_ids); 765 766 CHN_LOCK(rdch); 767 pcm_chnref(rdch, rdref); 768 chn_abort(rdch); /* won't sleep */ 769 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 770 CHN_F_DEAD | CHN_F_EXCLUSIVE); 771 chn_reset(rdch, 0, 0); 772 pcm_chnrelease(rdch); 773 } 774 if (wrch != NULL) { 775 /* 776 * Please see block above. 777 */ 778 PCM_SG_LOCK(); 779 sg_ids = chn_syncdestroy(wrch); 780 PCM_SG_UNLOCK(); 781 if (sg_ids != 0) 782 free_unr(pcmsg_unrhdr, sg_ids); 783 784 CHN_LOCK(wrch); 785 pcm_chnref(wrch, wdref); 786 chn_flush(wrch); /* may sleep */ 787 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 788 CHN_F_DEAD | CHN_F_EXCLUSIVE); 789 chn_reset(wrch, 0, 0); 790 pcm_chnrelease(wrch); 791 } 792 PCM_LOCK(d); 793 } 794 795 dsp_cdevinfo_free(i_dev); 796 /* 797 * Release clone busy state and unref it so the automatic 798 * garbage collector will get the hint and do the remaining 799 * cleanup process. 800 */ 801 (void)snd_clone_release(i_dev); 802 803 /* 804 * destroy_dev() might sleep, so release pcm lock 805 * here and rely on pcm cv serialization. 806 */ 807 PCM_UNLOCK(d); 808 (void)snd_clone_unref(i_dev); 809 PCM_LOCK(d); 810 811 PCM_RELEASE(d); 812 PCM_UNLOCK(d); 813 814 PCM_GIANT_LEAVE(d); 815 816 return (0); 817} 818 819static __inline int 820dsp_io_ops(struct cdev *i_dev, struct uio *buf) 821{ 822 struct snddev_info *d; 823 struct pcm_channel **ch, *rdch, *wrch; 824 int (*chn_io)(struct pcm_channel *, struct uio *); 825 int prio, ret; 826 pid_t runpid; 827 828 KASSERT(i_dev != NULL && buf != NULL && 829 (buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE), 830 ("%s(): io train wreck!", __func__)); 831 832 d = dsp_get_info(i_dev); 833 if (!DSP_REGISTERED(d, i_dev)) 834 return (EBADF); 835 836 PCM_GIANT_ENTER(d); 837 838 switch (buf->uio_rw) { 839 case UIO_READ: 840 prio = SD_F_PRIO_RD; 841 ch = &rdch; 842 chn_io = chn_read; 843 break; 844 case UIO_WRITE: 845 prio = SD_F_PRIO_WR; 846 ch = &wrch; 847 chn_io = chn_write; 848 break; 849 default: 850 panic("invalid/corrupted uio direction: %d", buf->uio_rw); 851 break; 852 } 853 854 rdch = NULL; 855 wrch = NULL; 856 runpid = buf->uio_td->td_proc->p_pid; 857 858 getchns(i_dev, &rdch, &wrch, prio); 859 860 if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) { 861 PCM_GIANT_EXIT(d); 862 return (EBADF); 863 } 864 865 if (((*ch)->flags & (CHN_F_MMAP | CHN_F_DEAD)) || 866 (((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) { 867 relchns(i_dev, rdch, wrch, prio); 868 PCM_GIANT_EXIT(d); 869 return (EINVAL); 870 } else if (!((*ch)->flags & CHN_F_RUNNING)) { 871 (*ch)->flags |= CHN_F_RUNNING; 872 (*ch)->pid = runpid; 873 } 874 875 /* 876 * chn_read/write must give up channel lock in order to copy bytes 877 * from/to userland, so up the "in progress" counter to make sure 878 * someone else doesn't come along and muss up the buffer. 879 */ 880 ++(*ch)->inprog; 881 ret = chn_io(*ch, buf); 882 --(*ch)->inprog; 883 884 CHN_BROADCAST(&(*ch)->cv); 885 886 relchns(i_dev, rdch, wrch, prio); 887 888 PCM_GIANT_LEAVE(d); 889 890 return (ret); 891} 892 893static int 894dsp_read(struct cdev *i_dev, struct uio *buf, int flag) 895{ 896 return (dsp_io_ops(i_dev, buf)); 897} 898 899static int 900dsp_write(struct cdev *i_dev, struct uio *buf, int flag) 901{ 902 return (dsp_io_ops(i_dev, buf)); 903} 904 905static int 906dsp_get_volume_channel(struct cdev *dev, struct pcm_channel **volch) 907{ 908 struct snddev_info *d; 909 struct pcm_channel *c; 910 int unit; 911 912 KASSERT(dev != NULL && volch != NULL, 913 ("%s(): NULL query dev=%p volch=%p", __func__, dev, volch)); 914 915 d = dsp_get_info(dev); 916 if (!PCM_REGISTERED(d)) { 917 *volch = NULL; 918 return (EINVAL); 919 } 920 921 PCM_UNLOCKASSERT(d); 922 923 *volch = NULL; 924 925 c = PCM_VOLCH(dev); 926 if (c != NULL) { 927 if (!(c->feederflags & (1 << FEEDER_VOLUME))) 928 return (-1); 929 *volch = c; 930 return (0); 931 } 932 933 PCM_LOCK(d); 934 PCM_WAIT(d); 935 PCM_ACQUIRE(d); 936 937 unit = dev2unit(dev); 938 939 CHN_FOREACH(c, d, channels.pcm) { 940 CHN_LOCK(c); 941 if (c->unit != unit) { 942 CHN_UNLOCK(c); 943 continue; 944 } 945 *volch = c; 946 pcm_chnref(c, 1); 947 PCM_VOLCH(dev) = c; 948 CHN_UNLOCK(c); 949 PCM_RELEASE(d); 950 PCM_UNLOCK(d); 951 return ((c->feederflags & (1 << FEEDER_VOLUME)) ? 0 : -1); 952 } 953 954 PCM_RELEASE(d); 955 PCM_UNLOCK(d); 956 957 return (EINVAL); 958} 959 960static int 961dsp_ioctl_channel(struct cdev *dev, struct pcm_channel *volch, u_long cmd, 962 caddr_t arg) 963{ 964 struct snddev_info *d; 965 struct pcm_channel *rdch, *wrch; 966 int j, devtype, ret; 967 968 d = dsp_get_info(dev); 969 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 970 return (-1); 971 972 PCM_UNLOCKASSERT(d); 973 974 j = cmd & 0xff; 975 976 rdch = PCM_RDCH(dev); 977 wrch = PCM_WRCH(dev); 978 979 /* No specific channel, look into cache */ 980 if (volch == NULL) 981 volch = PCM_VOLCH(dev); 982 983 /* Look harder */ 984 if (volch == NULL) { 985 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 986 volch = rdch; 987 else if (j == SOUND_MIXER_PCM && wrch != NULL) 988 volch = wrch; 989 } 990 991 devtype = PCMDEV(dev); 992 993 /* Look super harder */ 994 if (volch == NULL && 995 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 996 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 997 ret = dsp_get_volume_channel(dev, &volch); 998 if (ret != 0) 999 return (ret); 1000 if (volch == NULL) 1001 return (EINVAL); 1002 } 1003 1004 /* Final validation */ 1005 if (volch != NULL) { 1006 CHN_LOCK(volch); 1007 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 1008 CHN_UNLOCK(volch); 1009 return (-1); 1010 } 1011 if (volch->direction == PCMDIR_PLAY) 1012 wrch = volch; 1013 else 1014 rdch = volch; 1015 } 1016 1017 ret = EINVAL; 1018 1019 if (volch != NULL && 1020 ((j == SOUND_MIXER_PCM && volch->direction == PCMDIR_PLAY) || 1021 (j == SOUND_MIXER_RECLEV && volch->direction == PCMDIR_REC))) { 1022 if ((cmd & ~0xff) == MIXER_WRITE(0)) { 1023 int left, right, center; 1024 1025 left = *(int *)arg & 0x7f; 1026 right = ((*(int *)arg) >> 8) & 0x7f; 1027 center = (left + right) >> 1; 1028 chn_setvolume_multi(volch, SND_VOL_C_PCM, left, right, 1029 center); 1030 } else if ((cmd & ~0xff) == MIXER_READ(0)) { 1031 *(int *)arg = CHN_GETVOLUME(volch, 1032 SND_VOL_C_PCM, SND_CHN_T_FL); 1033 *(int *)arg |= CHN_GETVOLUME(volch, 1034 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1035 } 1036 ret = 0; 1037 } else if (rdch != NULL || wrch != NULL) { 1038 switch (j) { 1039 case SOUND_MIXER_DEVMASK: 1040 case SOUND_MIXER_CAPS: 1041 case SOUND_MIXER_STEREODEVS: 1042 if ((cmd & ~0xff) == MIXER_READ(0)) { 1043 *(int *)arg = 0; 1044 if (rdch != NULL) 1045 *(int *)arg |= SOUND_MASK_RECLEV; 1046 if (wrch != NULL) 1047 *(int *)arg |= SOUND_MASK_PCM; 1048 } 1049 ret = 0; 1050 break; 1051 case SOUND_MIXER_RECMASK: 1052 case SOUND_MIXER_RECSRC: 1053 if ((cmd & ~0xff) == MIXER_READ(0)) 1054 *(int *)arg = 0; 1055 ret = 0; 1056 break; 1057 default: 1058 break; 1059 } 1060 } 1061 1062 if (volch != NULL) 1063 CHN_UNLOCK(volch); 1064 1065 return (ret); 1066} 1067 1068static int 1069dsp_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, 1070 struct thread *td) 1071{ 1072 struct pcm_channel *chn, *rdch, *wrch; 1073 struct snddev_info *d; 1074 u_long xcmd; 1075 int *arg_i, ret, tmp; 1076 1077 d = dsp_get_info(i_dev); 1078 if (!DSP_REGISTERED(d, i_dev)) 1079 return (EBADF); 1080 1081 PCM_GIANT_ENTER(d); 1082 1083 arg_i = (int *)arg; 1084 ret = 0; 1085 xcmd = 0; 1086 chn = NULL; 1087 1088 if (IOCGROUP(cmd) == 'M') { 1089 if (cmd == OSS_GETVERSION) { 1090 *arg_i = SOUND_VERSION; 1091 PCM_GIANT_EXIT(d); 1092 return (0); 1093 } 1094 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1095 if (ret != -1) { 1096 PCM_GIANT_EXIT(d); 1097 return (ret); 1098 } 1099 1100 if (d->mixer_dev != NULL) { 1101 PCM_ACQUIRE_QUICK(d); 1102 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1103 MIXER_CMD_DIRECT); 1104 PCM_RELEASE_QUICK(d); 1105 } else 1106 ret = EBADF; 1107 1108 PCM_GIANT_EXIT(d); 1109 1110 return (ret); 1111 } 1112 1113 /* 1114 * Certain ioctls may be made on any type of device (audio, mixer, 1115 * and MIDI). Handle those special cases here. 1116 */ 1117 if (IOCGROUP(cmd) == 'X') { 1118 PCM_ACQUIRE_QUICK(d); 1119 switch(cmd) { 1120 case SNDCTL_SYSINFO: 1121 sound_oss_sysinfo((oss_sysinfo *)arg); 1122 break; 1123 case SNDCTL_CARDINFO: 1124 ret = sound_oss_card_info((oss_card_info *)arg); 1125 break; 1126 case SNDCTL_AUDIOINFO: 1127 case SNDCTL_AUDIOINFO_EX: 1128 case SNDCTL_ENGINEINFO: 1129 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1130 break; 1131 case SNDCTL_MIXERINFO: 1132 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1133 break; 1134 default: 1135 ret = EINVAL; 1136 } 1137 PCM_RELEASE_QUICK(d); 1138 PCM_GIANT_EXIT(d); 1139 return (ret); 1140 } 1141 1142 getchns(i_dev, &rdch, &wrch, 0); 1143 1144 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1145 wrch = NULL; 1146 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1147 rdch = NULL; 1148 1149 if (wrch == NULL && rdch == NULL) { 1150 PCM_GIANT_EXIT(d); 1151 return (EINVAL); 1152 } 1153 1154 switch(cmd) { 1155#ifdef OLDPCM_IOCTL 1156 /* 1157 * we start with the new ioctl interface. 1158 */ 1159 case AIONWRITE: /* how many bytes can write ? */ 1160 if (wrch) { 1161 CHN_LOCK(wrch); 1162/* 1163 if (wrch && wrch->bufhard.dl) 1164 while (chn_wrfeed(wrch) == 0); 1165*/ 1166 *arg_i = sndbuf_getfree(wrch->bufsoft); 1167 CHN_UNLOCK(wrch); 1168 } else { 1169 *arg_i = 0; 1170 ret = EINVAL; 1171 } 1172 break; 1173 1174 case AIOSSIZE: /* set the current blocksize */ 1175 { 1176 struct snd_size *p = (struct snd_size *)arg; 1177 1178 p->play_size = 0; 1179 p->rec_size = 0; 1180 PCM_ACQUIRE_QUICK(d); 1181 if (wrch) { 1182 CHN_LOCK(wrch); 1183 chn_setblocksize(wrch, 2, p->play_size); 1184 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1185 CHN_UNLOCK(wrch); 1186 } 1187 if (rdch) { 1188 CHN_LOCK(rdch); 1189 chn_setblocksize(rdch, 2, p->rec_size); 1190 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1191 CHN_UNLOCK(rdch); 1192 } 1193 PCM_RELEASE_QUICK(d); 1194 } 1195 break; 1196 case AIOGSIZE: /* get the current blocksize */ 1197 { 1198 struct snd_size *p = (struct snd_size *)arg; 1199 1200 if (wrch) { 1201 CHN_LOCK(wrch); 1202 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1203 CHN_UNLOCK(wrch); 1204 } 1205 if (rdch) { 1206 CHN_LOCK(rdch); 1207 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1208 CHN_UNLOCK(rdch); 1209 } 1210 } 1211 break; 1212 1213 case AIOSFMT: 1214 case AIOGFMT: 1215 { 1216 snd_chan_param *p = (snd_chan_param *)arg; 1217 1218 if (cmd == AIOSFMT && 1219 ((p->play_format != 0 && p->play_rate == 0) || 1220 (p->rec_format != 0 && p->rec_rate == 0))) { 1221 ret = EINVAL; 1222 break; 1223 } 1224 PCM_ACQUIRE_QUICK(d); 1225 if (wrch) { 1226 CHN_LOCK(wrch); 1227 if (cmd == AIOSFMT && p->play_format != 0) { 1228 chn_setformat(wrch, 1229 SND_FORMAT(p->play_format, 1230 AFMT_CHANNEL(wrch->format), 1231 AFMT_EXTCHANNEL(wrch->format))); 1232 chn_setspeed(wrch, p->play_rate); 1233 } 1234 p->play_rate = wrch->speed; 1235 p->play_format = AFMT_ENCODING(wrch->format); 1236 CHN_UNLOCK(wrch); 1237 } else { 1238 p->play_rate = 0; 1239 p->play_format = 0; 1240 } 1241 if (rdch) { 1242 CHN_LOCK(rdch); 1243 if (cmd == AIOSFMT && p->rec_format != 0) { 1244 chn_setformat(rdch, 1245 SND_FORMAT(p->rec_format, 1246 AFMT_CHANNEL(rdch->format), 1247 AFMT_EXTCHANNEL(rdch->format))); 1248 chn_setspeed(rdch, p->rec_rate); 1249 } 1250 p->rec_rate = rdch->speed; 1251 p->rec_format = AFMT_ENCODING(rdch->format); 1252 CHN_UNLOCK(rdch); 1253 } else { 1254 p->rec_rate = 0; 1255 p->rec_format = 0; 1256 } 1257 PCM_RELEASE_QUICK(d); 1258 } 1259 break; 1260 1261 case AIOGCAP: /* get capabilities */ 1262 { 1263 snd_capabilities *p = (snd_capabilities *)arg; 1264 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1265 struct cdev *pdev; 1266 1267 PCM_LOCK(d); 1268 if (rdch) { 1269 CHN_LOCK(rdch); 1270 rcaps = chn_getcaps(rdch); 1271 } 1272 if (wrch) { 1273 CHN_LOCK(wrch); 1274 pcaps = chn_getcaps(wrch); 1275 } 1276 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1277 pcaps? pcaps->minspeed : 0); 1278 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1279 pcaps? pcaps->maxspeed : 1000000); 1280 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1281 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1282 /* XXX bad on sb16 */ 1283 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1284 (wrch? chn_getformats(wrch) : 0xffffffff); 1285 if (rdch && wrch) 1286 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1287 pdev = d->mixer_dev; 1288 p->mixers = 1; /* default: one mixer */ 1289 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1290 p->left = p->right = 100; 1291 if (wrch) 1292 CHN_UNLOCK(wrch); 1293 if (rdch) 1294 CHN_UNLOCK(rdch); 1295 PCM_UNLOCK(d); 1296 } 1297 break; 1298 1299 case AIOSTOP: 1300 if (*arg_i == AIOSYNC_PLAY && wrch) { 1301 CHN_LOCK(wrch); 1302 *arg_i = chn_abort(wrch); 1303 CHN_UNLOCK(wrch); 1304 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1305 CHN_LOCK(rdch); 1306 *arg_i = chn_abort(rdch); 1307 CHN_UNLOCK(rdch); 1308 } else { 1309 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1310 *arg_i = 0; 1311 } 1312 break; 1313 1314 case AIOSYNC: 1315 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1316 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1317 break; 1318#endif 1319 /* 1320 * here follow the standard ioctls (filio.h etc.) 1321 */ 1322 case FIONREAD: /* get # bytes to read */ 1323 if (rdch) { 1324 CHN_LOCK(rdch); 1325/* if (rdch && rdch->bufhard.dl) 1326 while (chn_rdfeed(rdch) == 0); 1327*/ 1328 *arg_i = sndbuf_getready(rdch->bufsoft); 1329 CHN_UNLOCK(rdch); 1330 } else { 1331 *arg_i = 0; 1332 ret = EINVAL; 1333 } 1334 break; 1335 1336 case FIOASYNC: /*set/clear async i/o */ 1337 DEB( printf("FIOASYNC\n") ; ) 1338 break; 1339 1340 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1341 case FIONBIO: /* set/clear non-blocking i/o */ 1342 if (rdch) { 1343 CHN_LOCK(rdch); 1344 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1345 rdch->flags |= CHN_F_NBIO; 1346 else 1347 rdch->flags &= ~CHN_F_NBIO; 1348 CHN_UNLOCK(rdch); 1349 } 1350 if (wrch) { 1351 CHN_LOCK(wrch); 1352 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1353 wrch->flags |= CHN_F_NBIO; 1354 else 1355 wrch->flags &= ~CHN_F_NBIO; 1356 CHN_UNLOCK(wrch); 1357 } 1358 break; 1359 1360 /* 1361 * Finally, here is the linux-compatible ioctl interface 1362 */ 1363#define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1364 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1365 case SNDCTL_DSP_GETBLKSIZE: 1366 chn = wrch ? wrch : rdch; 1367 if (chn) { 1368 CHN_LOCK(chn); 1369 *arg_i = sndbuf_getblksz(chn->bufsoft); 1370 CHN_UNLOCK(chn); 1371 } else { 1372 *arg_i = 0; 1373 ret = EINVAL; 1374 } 1375 break; 1376 1377 case SNDCTL_DSP_SETBLKSIZE: 1378 RANGE(*arg_i, 16, 65536); 1379 PCM_ACQUIRE_QUICK(d); 1380 if (wrch) { 1381 CHN_LOCK(wrch); 1382 chn_setblocksize(wrch, 2, *arg_i); 1383 CHN_UNLOCK(wrch); 1384 } 1385 if (rdch) { 1386 CHN_LOCK(rdch); 1387 chn_setblocksize(rdch, 2, *arg_i); 1388 CHN_UNLOCK(rdch); 1389 } 1390 PCM_RELEASE_QUICK(d); 1391 break; 1392 1393 case SNDCTL_DSP_RESET: 1394 DEB(printf("dsp reset\n")); 1395 if (wrch) { 1396 CHN_LOCK(wrch); 1397 chn_abort(wrch); 1398 chn_resetbuf(wrch); 1399 CHN_UNLOCK(wrch); 1400 } 1401 if (rdch) { 1402 CHN_LOCK(rdch); 1403 chn_abort(rdch); 1404 chn_resetbuf(rdch); 1405 CHN_UNLOCK(rdch); 1406 } 1407 break; 1408 1409 case SNDCTL_DSP_SYNC: 1410 DEB(printf("dsp sync\n")); 1411 /* chn_sync may sleep */ 1412 if (wrch) { 1413 CHN_LOCK(wrch); 1414 chn_sync(wrch, 0); 1415 CHN_UNLOCK(wrch); 1416 } 1417 break; 1418 1419 case SNDCTL_DSP_SPEED: 1420 /* chn_setspeed may sleep */ 1421 tmp = 0; 1422 PCM_ACQUIRE_QUICK(d); 1423 if (wrch) { 1424 CHN_LOCK(wrch); 1425 ret = chn_setspeed(wrch, *arg_i); 1426 tmp = wrch->speed; 1427 CHN_UNLOCK(wrch); 1428 } 1429 if (rdch && ret == 0) { 1430 CHN_LOCK(rdch); 1431 ret = chn_setspeed(rdch, *arg_i); 1432 if (tmp == 0) 1433 tmp = rdch->speed; 1434 CHN_UNLOCK(rdch); 1435 } 1436 PCM_RELEASE_QUICK(d); 1437 *arg_i = tmp; 1438 break; 1439 1440 case SOUND_PCM_READ_RATE: 1441 chn = wrch ? wrch : rdch; 1442 if (chn) { 1443 CHN_LOCK(chn); 1444 *arg_i = chn->speed; 1445 CHN_UNLOCK(chn); 1446 } else { 1447 *arg_i = 0; 1448 ret = EINVAL; 1449 } 1450 break; 1451 1452 case SNDCTL_DSP_STEREO: 1453 tmp = -1; 1454 *arg_i = (*arg_i)? 2 : 1; 1455 PCM_ACQUIRE_QUICK(d); 1456 if (wrch) { 1457 CHN_LOCK(wrch); 1458 ret = chn_setformat(wrch, 1459 SND_FORMAT(wrch->format, *arg_i, 0)); 1460 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1461 CHN_UNLOCK(wrch); 1462 } 1463 if (rdch && ret == 0) { 1464 CHN_LOCK(rdch); 1465 ret = chn_setformat(rdch, 1466 SND_FORMAT(rdch->format, *arg_i, 0)); 1467 if (tmp == -1) 1468 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1469 CHN_UNLOCK(rdch); 1470 } 1471 PCM_RELEASE_QUICK(d); 1472 *arg_i = tmp; 1473 break; 1474 1475 case SOUND_PCM_WRITE_CHANNELS: 1476/* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1477 if (*arg_i < 0) { 1478 *arg_i = 0; 1479 ret = EINVAL; 1480 break; 1481 } 1482 if (*arg_i != 0) { 1483 struct pcmchan_matrix *m; 1484 uint32_t ext; 1485 1486 tmp = 0; 1487 if (*arg_i > SND_CHN_MAX) 1488 *arg_i = SND_CHN_MAX; 1489 1490 m = feeder_matrix_default_channel_map(*arg_i); 1491 if (m != NULL) 1492 ext = m->ext; 1493 else 1494 ext = 0; 1495 1496 PCM_ACQUIRE_QUICK(d); 1497 if (wrch) { 1498 CHN_LOCK(wrch); 1499 ret = chn_setformat(wrch, 1500 SND_FORMAT(wrch->format, *arg_i, ext)); 1501 tmp = AFMT_CHANNEL(wrch->format); 1502 CHN_UNLOCK(wrch); 1503 } 1504 if (rdch && ret == 0) { 1505 CHN_LOCK(rdch); 1506 ret = chn_setformat(rdch, 1507 SND_FORMAT(rdch->format, *arg_i, ext)); 1508 if (tmp == 0) 1509 tmp = AFMT_CHANNEL(rdch->format); 1510 CHN_UNLOCK(rdch); 1511 } 1512 PCM_RELEASE_QUICK(d); 1513 *arg_i = tmp; 1514 } else { 1515 chn = wrch ? wrch : rdch; 1516 CHN_LOCK(chn); 1517 *arg_i = AFMT_CHANNEL(chn->format); 1518 CHN_UNLOCK(chn); 1519 } 1520 break; 1521 1522 case SOUND_PCM_READ_CHANNELS: 1523 chn = wrch ? wrch : rdch; 1524 if (chn) { 1525 CHN_LOCK(chn); 1526 *arg_i = AFMT_CHANNEL(chn->format); 1527 CHN_UNLOCK(chn); 1528 } else { 1529 *arg_i = 0; 1530 ret = EINVAL; 1531 } 1532 break; 1533 1534 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1535 chn = wrch ? wrch : rdch; 1536 if (chn) { 1537 CHN_LOCK(chn); 1538 *arg_i = chn_getformats(chn); 1539 CHN_UNLOCK(chn); 1540 } else { 1541 *arg_i = 0; 1542 ret = EINVAL; 1543 } 1544 break; 1545 1546 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1547 if (*arg_i != AFMT_QUERY) { 1548 tmp = 0; 1549 PCM_ACQUIRE_QUICK(d); 1550 if (wrch) { 1551 CHN_LOCK(wrch); 1552 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1553 AFMT_CHANNEL(wrch->format), 1554 AFMT_EXTCHANNEL(wrch->format))); 1555 tmp = wrch->format; 1556 CHN_UNLOCK(wrch); 1557 } 1558 if (rdch && ret == 0) { 1559 CHN_LOCK(rdch); 1560 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1561 AFMT_CHANNEL(rdch->format), 1562 AFMT_EXTCHANNEL(rdch->format))); 1563 if (tmp == 0) 1564 tmp = rdch->format; 1565 CHN_UNLOCK(rdch); 1566 } 1567 PCM_RELEASE_QUICK(d); 1568 *arg_i = AFMT_ENCODING(tmp); 1569 } else { 1570 chn = wrch ? wrch : rdch; 1571 CHN_LOCK(chn); 1572 *arg_i = AFMT_ENCODING(chn->format); 1573 CHN_UNLOCK(chn); 1574 } 1575 break; 1576 1577 case SNDCTL_DSP_SETFRAGMENT: 1578 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1579 { 1580 uint32_t fragln = (*arg_i) & 0x0000ffff; 1581 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1582 uint32_t fragsz; 1583 uint32_t r_maxfrags, r_fragsz; 1584 1585 RANGE(fragln, 4, 16); 1586 fragsz = 1 << fragln; 1587 1588 if (maxfrags == 0) 1589 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1590 if (maxfrags < 2) 1591 maxfrags = 2; 1592 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1593 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1594 1595 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1596 PCM_ACQUIRE_QUICK(d); 1597 if (rdch) { 1598 CHN_LOCK(rdch); 1599 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1600 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1601 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1602 CHN_UNLOCK(rdch); 1603 } else { 1604 r_maxfrags = maxfrags; 1605 r_fragsz = fragsz; 1606 } 1607 if (wrch && ret == 0) { 1608 CHN_LOCK(wrch); 1609 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1610 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1611 fragsz = sndbuf_getblksz(wrch->bufsoft); 1612 CHN_UNLOCK(wrch); 1613 } else { /* use whatever came from the read channel */ 1614 maxfrags = r_maxfrags; 1615 fragsz = r_fragsz; 1616 } 1617 PCM_RELEASE_QUICK(d); 1618 1619 fragln = 0; 1620 while (fragsz > 1) { 1621 fragln++; 1622 fragsz >>= 1; 1623 } 1624 *arg_i = (maxfrags << 16) | fragln; 1625 } 1626 break; 1627 1628 case SNDCTL_DSP_GETISPACE: 1629 /* return the size of data available in the input queue */ 1630 { 1631 audio_buf_info *a = (audio_buf_info *)arg; 1632 if (rdch) { 1633 struct snd_dbuf *bs = rdch->bufsoft; 1634 1635 CHN_LOCK(rdch); 1636 a->bytes = sndbuf_getready(bs); 1637 a->fragments = a->bytes / sndbuf_getblksz(bs); 1638 a->fragstotal = sndbuf_getblkcnt(bs); 1639 a->fragsize = sndbuf_getblksz(bs); 1640 CHN_UNLOCK(rdch); 1641 } else 1642 ret = EINVAL; 1643 } 1644 break; 1645 1646 case SNDCTL_DSP_GETOSPACE: 1647 /* return space available in the output queue */ 1648 { 1649 audio_buf_info *a = (audio_buf_info *)arg; 1650 if (wrch) { 1651 struct snd_dbuf *bs = wrch->bufsoft; 1652 1653 CHN_LOCK(wrch); 1654 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1655 a->bytes = sndbuf_getfree(bs); 1656 a->fragments = a->bytes / sndbuf_getblksz(bs); 1657 a->fragstotal = sndbuf_getblkcnt(bs); 1658 a->fragsize = sndbuf_getblksz(bs); 1659 CHN_UNLOCK(wrch); 1660 } else 1661 ret = EINVAL; 1662 } 1663 break; 1664 1665 case SNDCTL_DSP_GETIPTR: 1666 { 1667 count_info *a = (count_info *)arg; 1668 if (rdch) { 1669 struct snd_dbuf *bs = rdch->bufsoft; 1670 1671 CHN_LOCK(rdch); 1672 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1673 a->bytes = sndbuf_gettotal(bs); 1674 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1675 a->ptr = sndbuf_getfreeptr(bs); 1676 rdch->blocks = sndbuf_getblocks(bs); 1677 CHN_UNLOCK(rdch); 1678 } else 1679 ret = EINVAL; 1680 } 1681 break; 1682 1683 case SNDCTL_DSP_GETOPTR: 1684 { 1685 count_info *a = (count_info *)arg; 1686 if (wrch) { 1687 struct snd_dbuf *bs = wrch->bufsoft; 1688 1689 CHN_LOCK(wrch); 1690 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1691 a->bytes = sndbuf_gettotal(bs); 1692 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1693 a->ptr = sndbuf_getreadyptr(bs); 1694 wrch->blocks = sndbuf_getblocks(bs); 1695 CHN_UNLOCK(wrch); 1696 } else 1697 ret = EINVAL; 1698 } 1699 break; 1700 1701 case SNDCTL_DSP_GETCAPS: 1702 PCM_LOCK(d); 1703 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1704 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1705 *arg_i |= PCM_CAP_DUPLEX; 1706 PCM_UNLOCK(d); 1707 break; 1708 1709 case SOUND_PCM_READ_BITS: 1710 chn = wrch ? wrch : rdch; 1711 if (chn) { 1712 CHN_LOCK(chn); 1713 if (chn->format & AFMT_8BIT) 1714 *arg_i = 8; 1715 else if (chn->format & AFMT_16BIT) 1716 *arg_i = 16; 1717 else if (chn->format & AFMT_24BIT) 1718 *arg_i = 24; 1719 else if (chn->format & AFMT_32BIT) 1720 *arg_i = 32; 1721 else 1722 ret = EINVAL; 1723 CHN_UNLOCK(chn); 1724 } else { 1725 *arg_i = 0; 1726 ret = EINVAL; 1727 } 1728 break; 1729 1730 case SNDCTL_DSP_SETTRIGGER: 1731 if (rdch) { 1732 CHN_LOCK(rdch); 1733 rdch->flags &= ~CHN_F_NOTRIGGER; 1734 if (*arg_i & PCM_ENABLE_INPUT) 1735 chn_start(rdch, 1); 1736 else { 1737 chn_abort(rdch); 1738 chn_resetbuf(rdch); 1739 rdch->flags |= CHN_F_NOTRIGGER; 1740 } 1741 CHN_UNLOCK(rdch); 1742 } 1743 if (wrch) { 1744 CHN_LOCK(wrch); 1745 wrch->flags &= ~CHN_F_NOTRIGGER; 1746 if (*arg_i & PCM_ENABLE_OUTPUT) 1747 chn_start(wrch, 1); 1748 else { 1749 chn_abort(wrch); 1750 chn_resetbuf(wrch); 1751 wrch->flags |= CHN_F_NOTRIGGER; 1752 } 1753 CHN_UNLOCK(wrch); 1754 } 1755 break; 1756 1757 case SNDCTL_DSP_GETTRIGGER: 1758 *arg_i = 0; 1759 if (wrch) { 1760 CHN_LOCK(wrch); 1761 if (wrch->flags & CHN_F_TRIGGERED) 1762 *arg_i |= PCM_ENABLE_OUTPUT; 1763 CHN_UNLOCK(wrch); 1764 } 1765 if (rdch) { 1766 CHN_LOCK(rdch); 1767 if (rdch->flags & CHN_F_TRIGGERED) 1768 *arg_i |= PCM_ENABLE_INPUT; 1769 CHN_UNLOCK(rdch); 1770 } 1771 break; 1772 1773 case SNDCTL_DSP_GETODELAY: 1774 if (wrch) { 1775 struct snd_dbuf *bs = wrch->bufsoft; 1776 1777 CHN_LOCK(wrch); 1778 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1779 *arg_i = sndbuf_getready(bs); 1780 CHN_UNLOCK(wrch); 1781 } else 1782 ret = EINVAL; 1783 break; 1784 1785 case SNDCTL_DSP_POST: 1786 if (wrch) { 1787 CHN_LOCK(wrch); 1788 wrch->flags &= ~CHN_F_NOTRIGGER; 1789 chn_start(wrch, 1); 1790 CHN_UNLOCK(wrch); 1791 } 1792 break; 1793 1794 case SNDCTL_DSP_SETDUPLEX: 1795 /* 1796 * switch to full-duplex mode if card is in half-duplex 1797 * mode and is able to work in full-duplex mode 1798 */ 1799 PCM_LOCK(d); 1800 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1801 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1802 PCM_UNLOCK(d); 1803 break; 1804 1805 /* 1806 * The following four ioctls are simple wrappers around mixer_ioctl 1807 * with no further processing. xcmd is short for "translated 1808 * command". 1809 */ 1810 case SNDCTL_DSP_GETRECVOL: 1811 if (xcmd == 0) { 1812 xcmd = SOUND_MIXER_READ_RECLEV; 1813 chn = rdch; 1814 } 1815 /* FALLTHROUGH */ 1816 case SNDCTL_DSP_SETRECVOL: 1817 if (xcmd == 0) { 1818 xcmd = SOUND_MIXER_WRITE_RECLEV; 1819 chn = rdch; 1820 } 1821 /* FALLTHROUGH */ 1822 case SNDCTL_DSP_GETPLAYVOL: 1823 if (xcmd == 0) { 1824 xcmd = SOUND_MIXER_READ_PCM; 1825 chn = wrch; 1826 } 1827 /* FALLTHROUGH */ 1828 case SNDCTL_DSP_SETPLAYVOL: 1829 if (xcmd == 0) { 1830 xcmd = SOUND_MIXER_WRITE_PCM; 1831 chn = wrch; 1832 } 1833 1834 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1835 if (ret != -1) { 1836 PCM_GIANT_EXIT(d); 1837 return (ret); 1838 } 1839 1840 if (d->mixer_dev != NULL) { 1841 PCM_ACQUIRE_QUICK(d); 1842 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, td, 1843 MIXER_CMD_DIRECT); 1844 PCM_RELEASE_QUICK(d); 1845 } else 1846 ret = ENOTSUP; 1847 1848 break; 1849 1850 case SNDCTL_DSP_GET_RECSRC_NAMES: 1851 case SNDCTL_DSP_GET_RECSRC: 1852 case SNDCTL_DSP_SET_RECSRC: 1853 if (d->mixer_dev != NULL) { 1854 PCM_ACQUIRE_QUICK(d); 1855 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, td, 1856 MIXER_CMD_DIRECT); 1857 PCM_RELEASE_QUICK(d); 1858 } else 1859 ret = ENOTSUP; 1860 break; 1861 1862 /* 1863 * The following 3 ioctls aren't very useful at the moment. For 1864 * now, only a single channel is associated with a cdev (/dev/dspN 1865 * instance), so there's only a single output routing to use (i.e., 1866 * the wrch bound to this cdev). 1867 */ 1868 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1869 { 1870 oss_mixer_enuminfo *ei; 1871 ei = (oss_mixer_enuminfo *)arg; 1872 ei->dev = 0; 1873 ei->ctrl = 0; 1874 ei->version = 0; /* static for now */ 1875 ei->strindex[0] = 0; 1876 1877 if (wrch != NULL) { 1878 ei->nvalues = 1; 1879 strlcpy(ei->strings, wrch->name, 1880 sizeof(ei->strings)); 1881 } else { 1882 ei->nvalues = 0; 1883 ei->strings[0] = '\0'; 1884 } 1885 } 1886 break; 1887 case SNDCTL_DSP_GET_PLAYTGT: 1888 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1889 /* 1890 * Re: SET_PLAYTGT 1891 * OSSv4: "The value that was accepted by the device will 1892 * be returned back in the variable pointed by the 1893 * argument." 1894 */ 1895 if (wrch != NULL) 1896 *arg_i = 0; 1897 else 1898 ret = EINVAL; 1899 break; 1900 1901 case SNDCTL_DSP_SILENCE: 1902 /* 1903 * Flush the software (pre-feed) buffer, but try to minimize playback 1904 * interruption. (I.e., record unplayed samples with intent to 1905 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1906 * functionality. 1907 */ 1908 if (wrch == NULL) 1909 ret = EINVAL; 1910 else { 1911 struct snd_dbuf *bs; 1912 CHN_LOCK(wrch); 1913 while (wrch->inprog != 0) 1914 cv_wait(&wrch->cv, wrch->lock); 1915 bs = wrch->bufsoft; 1916 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1917 bs->sl = sndbuf_getready(bs); 1918 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1919 sndbuf_fillsilence(bs); 1920 chn_start(wrch, 0); 1921 } 1922 CHN_UNLOCK(wrch); 1923 } 1924 break; 1925 1926 case SNDCTL_DSP_SKIP: 1927 /* 1928 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1929 * playback buffer by moving the current write position immediately 1930 * before the point where the device is currently reading the samples." 1931 */ 1932 if (wrch == NULL) 1933 ret = EINVAL; 1934 else { 1935 struct snd_dbuf *bs; 1936 CHN_LOCK(wrch); 1937 while (wrch->inprog != 0) 1938 cv_wait(&wrch->cv, wrch->lock); 1939 bs = wrch->bufsoft; 1940 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1941 sndbuf_softreset(bs); 1942 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1943 bs->sl = 0; 1944 chn_start(wrch, 0); 1945 } 1946 CHN_UNLOCK(wrch); 1947 } 1948 break; 1949 1950 case SNDCTL_DSP_CURRENT_OPTR: 1951 case SNDCTL_DSP_CURRENT_IPTR: 1952 /** 1953 * @note Changing formats resets the buffer counters, which differs 1954 * from the 4Front drivers. However, I don't expect this to be 1955 * much of a problem. 1956 * 1957 * @note In a test where @c CURRENT_OPTR is called immediately after write 1958 * returns, this driver is about 32K samples behind whereas 1959 * 4Front's is about 8K samples behind. Should determine source 1960 * of discrepancy, even if only out of curiosity. 1961 * 1962 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1963 */ 1964 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1965 if (chn == NULL) 1966 ret = EINVAL; 1967 else { 1968 struct snd_dbuf *bs; 1969 /* int tmp; */ 1970 1971 oss_count_t *oc = (oss_count_t *)arg; 1972 1973 CHN_LOCK(chn); 1974 bs = chn->bufsoft; 1975#if 0 1976 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1977 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1978 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1979#else 1980 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1981 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1982#endif 1983 CHN_UNLOCK(chn); 1984 } 1985 break; 1986 1987 case SNDCTL_DSP_HALT_OUTPUT: 1988 case SNDCTL_DSP_HALT_INPUT: 1989 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1990 if (chn == NULL) 1991 ret = EINVAL; 1992 else { 1993 CHN_LOCK(chn); 1994 chn_abort(chn); 1995 CHN_UNLOCK(chn); 1996 } 1997 break; 1998 1999 case SNDCTL_DSP_LOW_WATER: 2000 /* 2001 * Set the number of bytes required to attract attention by 2002 * select/poll. 2003 */ 2004 if (wrch != NULL) { 2005 CHN_LOCK(wrch); 2006 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 2007 CHN_UNLOCK(wrch); 2008 } 2009 if (rdch != NULL) { 2010 CHN_LOCK(rdch); 2011 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2012 CHN_UNLOCK(rdch); 2013 } 2014 break; 2015 2016 case SNDCTL_DSP_GETERROR: 2017 /* 2018 * OSSv4 docs: "All errors and counters will automatically be 2019 * cleared to zeroes after the call so each call will return only 2020 * the errors that occurred after the previous invocation. ... The 2021 * play_underruns and rec_overrun fields are the only useful fields 2022 * returned by OSS 4.0." 2023 */ 2024 { 2025 audio_errinfo *ei = (audio_errinfo *)arg; 2026 2027 bzero((void *)ei, sizeof(*ei)); 2028 2029 if (wrch != NULL) { 2030 CHN_LOCK(wrch); 2031 ei->play_underruns = wrch->xruns; 2032 wrch->xruns = 0; 2033 CHN_UNLOCK(wrch); 2034 } 2035 if (rdch != NULL) { 2036 CHN_LOCK(rdch); 2037 ei->rec_overruns = rdch->xruns; 2038 rdch->xruns = 0; 2039 CHN_UNLOCK(rdch); 2040 } 2041 } 2042 break; 2043 2044 case SNDCTL_DSP_SYNCGROUP: 2045 PCM_ACQUIRE_QUICK(d); 2046 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2047 PCM_RELEASE_QUICK(d); 2048 break; 2049 2050 case SNDCTL_DSP_SYNCSTART: 2051 PCM_ACQUIRE_QUICK(d); 2052 ret = dsp_oss_syncstart(*arg_i); 2053 PCM_RELEASE_QUICK(d); 2054 break; 2055 2056 case SNDCTL_DSP_POLICY: 2057 PCM_ACQUIRE_QUICK(d); 2058 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2059 PCM_RELEASE_QUICK(d); 2060 break; 2061 2062 case SNDCTL_DSP_COOKEDMODE: 2063 PCM_ACQUIRE_QUICK(d); 2064 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2065 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2066 PCM_RELEASE_QUICK(d); 2067 break; 2068 case SNDCTL_DSP_GET_CHNORDER: 2069 PCM_ACQUIRE_QUICK(d); 2070 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2071 PCM_RELEASE_QUICK(d); 2072 break; 2073 case SNDCTL_DSP_SET_CHNORDER: 2074 PCM_ACQUIRE_QUICK(d); 2075 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2076 PCM_RELEASE_QUICK(d); 2077 break; 2078 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2079 PCM_ACQUIRE_QUICK(d); 2080 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2081 PCM_RELEASE_QUICK(d); 2082 break; 2083 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2084 ret = EINVAL; 2085 break; 2086#ifdef OSSV4_EXPERIMENT 2087 /* 2088 * XXX The following ioctls are not yet supported and just return 2089 * EINVAL. 2090 */ 2091 case SNDCTL_DSP_GETOPEAKS: 2092 case SNDCTL_DSP_GETIPEAKS: 2093 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2094 if (chn == NULL) 2095 ret = EINVAL; 2096 else { 2097 oss_peaks_t *op = (oss_peaks_t *)arg; 2098 int lpeak, rpeak; 2099 2100 CHN_LOCK(chn); 2101 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2102 if (ret == -1) 2103 ret = EINVAL; 2104 else { 2105 (*op)[0] = lpeak; 2106 (*op)[1] = rpeak; 2107 } 2108 CHN_UNLOCK(chn); 2109 } 2110 break; 2111 2112 /* 2113 * XXX Once implemented, revisit this for proper cv protection 2114 * (if necessary). 2115 */ 2116 case SNDCTL_GETLABEL: 2117 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2118 break; 2119 case SNDCTL_SETLABEL: 2120 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2121 break; 2122 case SNDCTL_GETSONG: 2123 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2124 break; 2125 case SNDCTL_SETSONG: 2126 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2127 break; 2128 case SNDCTL_SETNAME: 2129 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2130 break; 2131#if 0 2132 /** 2133 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2134 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2135 * 4Front Technologies. 2136 */ 2137 case SNDCTL_DSP_READCTL: 2138 case SNDCTL_DSP_WRITECTL: 2139 ret = EINVAL; 2140 break; 2141#endif /* !0 (explicitly omitted ioctls) */ 2142 2143#endif /* !OSSV4_EXPERIMENT */ 2144 case SNDCTL_DSP_MAPINBUF: 2145 case SNDCTL_DSP_MAPOUTBUF: 2146 case SNDCTL_DSP_SETSYNCRO: 2147 /* undocumented */ 2148 2149 case SNDCTL_DSP_SUBDIVIDE: 2150 case SOUND_PCM_WRITE_FILTER: 2151 case SOUND_PCM_READ_FILTER: 2152 /* dunno what these do, don't sound important */ 2153 2154 default: 2155 DEB(printf("default ioctl fn 0x%08lx fail\n", cmd)); 2156 ret = EINVAL; 2157 break; 2158 } 2159 2160 PCM_GIANT_LEAVE(d); 2161 2162 return (ret); 2163} 2164 2165static int 2166dsp_poll(struct cdev *i_dev, int events, struct thread *td) 2167{ 2168 struct snddev_info *d; 2169 struct pcm_channel *wrch, *rdch; 2170 int ret, e; 2171 2172 d = dsp_get_info(i_dev); 2173 if (!DSP_REGISTERED(d, i_dev)) 2174 return (EBADF); 2175 2176 PCM_GIANT_ENTER(d); 2177 2178 wrch = NULL; 2179 rdch = NULL; 2180 ret = 0; 2181 2182 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2183 2184 if (wrch != NULL && !(wrch->flags & CHN_F_DEAD)) { 2185 e = (events & (POLLOUT | POLLWRNORM)); 2186 if (e) 2187 ret |= chn_poll(wrch, e, td); 2188 } 2189 2190 if (rdch != NULL && !(rdch->flags & CHN_F_DEAD)) { 2191 e = (events & (POLLIN | POLLRDNORM)); 2192 if (e) 2193 ret |= chn_poll(rdch, e, td); 2194 } 2195 2196 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2197 2198 PCM_GIANT_LEAVE(d); 2199 2200 return (ret); 2201} 2202 2203static int 2204dsp_mmap(struct cdev *i_dev, vm_ooffset_t offset, vm_paddr_t *paddr, 2205 int nprot, vm_memattr_t *memattr) 2206{ 2207 2208 /* XXX memattr is not honored */ 2209 *paddr = vtophys(offset); 2210 return (0); 2211} 2212 2213static int 2214dsp_mmap_single(struct cdev *i_dev, vm_ooffset_t *offset, 2215 vm_size_t size, struct vm_object **object, int nprot) 2216{ 2217 struct snddev_info *d; 2218 struct pcm_channel *wrch, *rdch, *c; 2219 2220 /* 2221 * Reject PROT_EXEC by default. It just doesn't makes sense. 2222 * Unfortunately, we have to give up this one due to linux_mmap 2223 * changes. 2224 * 2225 * http://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2226 * 2227 */ 2228#ifdef SV_ABI_LINUX 2229 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2230 (dsp_mmap_allow_prot_exec == 0 && 2231 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2232#else 2233 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2234#endif 2235 return (EINVAL); 2236 2237 /* 2238 * PROT_READ (alone) selects the input buffer. 2239 * PROT_WRITE (alone) selects the output buffer. 2240 * PROT_WRITE|PROT_READ together select the output buffer. 2241 */ 2242 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2243 return (EINVAL); 2244 2245 d = dsp_get_info(i_dev); 2246 if (!DSP_REGISTERED(d, i_dev)) 2247 return (EINVAL); 2248 2249 PCM_GIANT_ENTER(d); 2250 2251 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2252 2253 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2254 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2255 (*offset + size) > sndbuf_getsize(c->bufsoft) || 2256 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2257 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2258 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2259 PCM_GIANT_EXIT(d); 2260 return (EINVAL); 2261 } 2262 2263 if (wrch != NULL) 2264 wrch->flags |= CHN_F_MMAP; 2265 if (rdch != NULL) 2266 rdch->flags |= CHN_F_MMAP; 2267 2268 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2269 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2270 *object = vm_pager_allocate(OBJT_DEVICE, i_dev, 2271 size, nprot, *offset, curthread->td_ucred); 2272 2273 PCM_GIANT_LEAVE(d); 2274 2275 if (*object == NULL) 2276 return (EINVAL); 2277 return (0); 2278} 2279 2280/* So much for dev_stdclone() */ 2281static int 2282dsp_stdclone(char *name, char *namep, char *sep, int use_sep, int *u, int *c) 2283{ 2284 size_t len; 2285 2286 len = strlen(namep); 2287 2288 if (bcmp(name, namep, len) != 0) 2289 return (ENODEV); 2290 2291 name += len; 2292 2293 if (isdigit(*name) == 0) 2294 return (ENODEV); 2295 2296 len = strlen(sep); 2297 2298 if (*name == '0' && !(name[1] == '\0' || bcmp(name + 1, sep, len) == 0)) 2299 return (ENODEV); 2300 2301 for (*u = 0; isdigit(*name) != 0; name++) { 2302 *u *= 10; 2303 *u += *name - '0'; 2304 if (*u > dsp_umax) 2305 return (ENODEV); 2306 } 2307 2308 if (*name == '\0') 2309 return ((use_sep == 0) ? 0 : ENODEV); 2310 2311 if (bcmp(name, sep, len) != 0 || isdigit(name[len]) == 0) 2312 return (ENODEV); 2313 2314 name += len; 2315 2316 if (*name == '0' && name[1] != '\0') 2317 return (ENODEV); 2318 2319 for (*c = 0; isdigit(*name) != 0; name++) { 2320 *c *= 10; 2321 *c += *name - '0'; 2322 if (*c > dsp_cmax) 2323 return (ENODEV); 2324 } 2325 2326 if (*name != '\0') 2327 return (ENODEV); 2328 2329 return (0); 2330} 2331 2332static void 2333dsp_clone(void *arg, 2334 struct ucred *cred, 2335 char *name, int namelen, struct cdev **dev) 2336{ 2337 struct snddev_info *d; 2338 struct snd_clone_entry *ce; 2339 struct pcm_channel *c; 2340 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2341 char *devname, *devcmp, *devsep; 2342 2343 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2344 2345 if (*dev != NULL) 2346 return; 2347 2348 unit = -1; 2349 cunit = -1; 2350 devtype = -1; 2351 devhw = 0; 2352 devcmax = -1; 2353 tumax = -1; 2354 devname = NULL; 2355 devsep = NULL; 2356 2357 for (i = 0; unit == -1 && 2358 i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2359 devtype = dsp_cdevs[i].type; 2360 devcmp = dsp_cdevs[i].name; 2361 devsep = dsp_cdevs[i].sep; 2362 devname = dsp_cdevs[i].alias; 2363 if (devname == NULL) 2364 devname = devcmp; 2365 devhw = dsp_cdevs[i].hw; 2366 devcmax = dsp_cdevs[i].max - 1; 2367 if (strcmp(name, devcmp) == 0) { 2368 if (dsp_basename_clone != 0) 2369 unit = snd_unit; 2370 } else if (dsp_stdclone(name, devcmp, devsep, 2371 dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { 2372 unit = -1; 2373 cunit = -1; 2374 } 2375 } 2376 2377 d = devclass_get_softc(pcm_devclass, unit); 2378 if (!PCM_REGISTERED(d) || d->clones == NULL) 2379 return; 2380 2381 /* XXX Need Giant magic entry ??? */ 2382 2383 PCM_LOCK(d); 2384 if (snd_clone_disabled(d->clones)) { 2385 PCM_UNLOCK(d); 2386 return; 2387 } 2388 2389 PCM_WAIT(d); 2390 PCM_ACQUIRE(d); 2391 PCM_UNLOCK(d); 2392 2393 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2394 2395 if (devhw != 0) { 2396 KASSERT(devcmax <= dsp_cmax, 2397 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2398 if (cunit > devcmax) { 2399 PCM_RELEASE_QUICK(d); 2400 return; 2401 } 2402 udcmask |= snd_c2unit(cunit); 2403 CHN_FOREACH(c, d, channels.pcm) { 2404 CHN_LOCK(c); 2405 if (c->unit != udcmask) { 2406 CHN_UNLOCK(c); 2407 continue; 2408 } 2409 CHN_UNLOCK(c); 2410 udcmask &= ~snd_c2unit(cunit); 2411 /* 2412 * Temporarily increase clone maxunit to overcome 2413 * vchan flexibility. 2414 * 2415 * # sysctl dev.pcm.0.play.vchans=256 2416 * dev.pcm.0.play.vchans: 1 -> 256 2417 * # cat /dev/zero > /dev/dsp0.vp255 & 2418 * [1] 17296 2419 * # sysctl dev.pcm.0.play.vchans=0 2420 * dev.pcm.0.play.vchans: 256 -> 1 2421 * # fg 2422 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2423 * ^C 2424 * # cat /dev/zero > /dev/dsp0.vp255 2425 * zsh: operation not supported: /dev/dsp0.vp255 2426 */ 2427 tumax = snd_clone_getmaxunit(d->clones); 2428 if (cunit > tumax) 2429 snd_clone_setmaxunit(d->clones, cunit); 2430 else 2431 tumax = -1; 2432 goto dsp_clone_alloc; 2433 } 2434 /* 2435 * Ok, so we're requesting unallocated vchan, but still 2436 * within maximum vchan limit. 2437 */ 2438 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2439 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2440 cunit < snd_maxautovchans) { 2441 udcmask &= ~snd_c2unit(cunit); 2442 tumax = snd_clone_getmaxunit(d->clones); 2443 if (cunit > tumax) 2444 snd_clone_setmaxunit(d->clones, cunit); 2445 else 2446 tumax = -1; 2447 goto dsp_clone_alloc; 2448 } 2449 PCM_RELEASE_QUICK(d); 2450 return; 2451 } 2452 2453dsp_clone_alloc: 2454 ce = snd_clone_alloc(d->clones, dev, &cunit, udcmask); 2455 if (tumax != -1) 2456 snd_clone_setmaxunit(d->clones, tumax); 2457 if (ce != NULL) { 2458 udcmask |= snd_c2unit(cunit); 2459 *dev = make_dev(&dsp_cdevsw, PCMMINOR(udcmask), 2460 UID_ROOT, GID_WHEEL, 0666, "%s%d%s%d", 2461 devname, unit, devsep, cunit); 2462 snd_clone_register(ce, *dev); 2463 } 2464 2465 PCM_RELEASE_QUICK(d); 2466 2467 if (*dev != NULL) 2468 dev_ref(*dev); 2469} 2470 2471static void 2472dsp_sysinit(void *p) 2473{ 2474 if (dsp_ehtag != NULL) 2475 return; 2476 /* initialize unit numbering */ 2477 snd_unit_init(); 2478 dsp_umax = PCMMAXUNIT; 2479 dsp_cmax = PCMMAXCHAN; 2480 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2481} 2482 2483static void 2484dsp_sysuninit(void *p) 2485{ 2486 if (dsp_ehtag == NULL) 2487 return; 2488 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2489 dsp_ehtag = NULL; 2490} 2491 2492SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2493SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2494 2495char * 2496dsp_unit2name(char *buf, size_t len, int unit) 2497{ 2498 int i, dtype; 2499 2500 KASSERT(buf != NULL && len != 0, 2501 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2502 2503 dtype = snd_unit2d(unit); 2504 2505 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2506 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2507 continue; 2508 snprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2509 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2510 return (buf); 2511 } 2512 2513 return (NULL); 2514} 2515 2516/** 2517 * @brief Handler for SNDCTL_AUDIOINFO. 2518 * 2519 * Gathers information about the audio device specified in ai->dev. If 2520 * ai->dev == -1, then this function gathers information about the current 2521 * device. If the call comes in on a non-audio device and ai->dev == -1, 2522 * return EINVAL. 2523 * 2524 * This routine is supposed to go practically straight to the hardware, 2525 * getting capabilities directly from the sound card driver, side-stepping 2526 * the intermediate channel interface. 2527 * 2528 * Note, however, that the usefulness of this command is significantly 2529 * decreased when requesting info about any device other than the one serving 2530 * the request. While each snddev_channel refers to a specific device node, 2531 * the converse is *not* true. Currently, when a sound device node is opened, 2532 * the sound subsystem scans for an available audio channel (or channels, if 2533 * opened in read+write) and then assigns them to the si_drv[12] private 2534 * data fields. As a result, any information returned linking a channel to 2535 * a specific character device isn't necessarily accurate. 2536 * 2537 * @note 2538 * Calling threads must not hold any snddev_info or pcm_channel locks. 2539 * 2540 * @param dev device on which the ioctl was issued 2541 * @param ai ioctl request data container 2542 * 2543 * @retval 0 success 2544 * @retval EINVAL ai->dev specifies an invalid device 2545 * 2546 * @todo Verify correctness of Doxygen tags. ;) 2547 */ 2548int 2549dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2550{ 2551 struct pcmchan_caps *caps; 2552 struct pcm_channel *ch; 2553 struct snddev_info *d; 2554 uint32_t fmts; 2555 int i, nchan, *rates, minch, maxch; 2556 char *devname, buf[CHN_NAMELEN]; 2557 2558 /* 2559 * If probing the device that received the ioctl, make sure it's a 2560 * DSP device. (Users may use this ioctl with /dev/mixer and 2561 * /dev/midi.) 2562 */ 2563 if (ai->dev == -1 && i_dev->si_devsw != &dsp_cdevsw) 2564 return (EINVAL); 2565 2566 ch = NULL; 2567 devname = NULL; 2568 nchan = 0; 2569 bzero(buf, sizeof(buf)); 2570 2571 /* 2572 * Search for the requested audio device (channel). Start by 2573 * iterating over pcm devices. 2574 */ 2575 for (i = 0; pcm_devclass != NULL && 2576 i < devclass_get_maxunit(pcm_devclass); i++) { 2577 d = devclass_get_softc(pcm_devclass, i); 2578 if (!PCM_REGISTERED(d)) 2579 continue; 2580 2581 /* XXX Need Giant magic entry ??? */ 2582 2583 /* See the note in function docblock */ 2584 PCM_UNLOCKASSERT(d); 2585 PCM_LOCK(d); 2586 2587 CHN_FOREACH(ch, d, channels.pcm) { 2588 CHN_UNLOCKASSERT(ch); 2589 CHN_LOCK(ch); 2590 if (ai->dev == -1) { 2591 if (DSP_REGISTERED(d, i_dev) && 2592 (ch == PCM_RDCH(i_dev) || /* record ch */ 2593 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2594 devname = dsp_unit2name(buf, 2595 sizeof(buf), ch->unit); 2596 } 2597 } else if (ai->dev == nchan) { 2598 devname = dsp_unit2name(buf, sizeof(buf), 2599 ch->unit); 2600 } 2601 if (devname != NULL) 2602 break; 2603 CHN_UNLOCK(ch); 2604 ++nchan; 2605 } 2606 2607 if (devname != NULL) { 2608 /* 2609 * At this point, the following synchronization stuff 2610 * has happened: 2611 * - a specific PCM device is locked. 2612 * - a specific audio channel has been locked, so be 2613 * sure to unlock when exiting; 2614 */ 2615 2616 caps = chn_getcaps(ch); 2617 2618 /* 2619 * With all handles collected, zero out the user's 2620 * container and begin filling in its fields. 2621 */ 2622 bzero((void *)ai, sizeof(oss_audioinfo)); 2623 2624 ai->dev = nchan; 2625 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2626 2627 if ((ch->flags & CHN_F_BUSY) == 0) 2628 ai->busy = 0; 2629 else 2630 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2631 2632 /** 2633 * @note 2634 * @c cmd - OSSv4 docs: "Only supported under Linux at 2635 * this moment." Cop-out, I know, but I'll save 2636 * running around in the process table for later. 2637 * Is there a risk of leaking information? 2638 */ 2639 ai->pid = ch->pid; 2640 2641 /* 2642 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2643 * Note, however, that a single channel operates in 2644 * only one direction, so PCM_CAP_DUPLEX is out. 2645 */ 2646 /** 2647 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2648 * these in pcmchan::caps? 2649 */ 2650 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2651 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2652 2653 /* 2654 * Collect formats supported @b natively by the 2655 * device. Also determine min/max channels. (I.e., 2656 * mono, stereo, or both?) 2657 * 2658 * If any channel is stereo, maxch = 2; 2659 * if all channels are stereo, minch = 2, too; 2660 * if any channel is mono, minch = 1; 2661 * and if all channels are mono, maxch = 1. 2662 */ 2663 minch = 0; 2664 maxch = 0; 2665 fmts = 0; 2666 for (i = 0; caps->fmtlist[i]; i++) { 2667 fmts |= caps->fmtlist[i]; 2668 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2669 minch = (minch == 0) ? 2 : minch; 2670 maxch = 2; 2671 } else { 2672 minch = 1; 2673 maxch = (maxch == 0) ? 1 : maxch; 2674 } 2675 } 2676 2677 if (ch->direction == PCMDIR_PLAY) 2678 ai->oformats = fmts; 2679 else 2680 ai->iformats = fmts; 2681 2682 /** 2683 * @note 2684 * @c magic - OSSv4 docs: "Reserved for internal use 2685 * by OSS." 2686 * 2687 * @par 2688 * @c card_number - OSSv4 docs: "Number of the sound 2689 * card where this device belongs or -1 if this 2690 * information is not available. Applications 2691 * should normally not use this field for any 2692 * purpose." 2693 */ 2694 ai->card_number = -1; 2695 /** 2696 * @todo @c song_name - depends first on 2697 * SNDCTL_[GS]ETSONG @todo @c label - depends 2698 * on SNDCTL_[GS]ETLABEL 2699 * @todo @c port_number - routing information? 2700 */ 2701 ai->port_number = -1; 2702 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2703 /** 2704 * @note 2705 * @c real_device - OSSv4 docs: "Obsolete." 2706 */ 2707 ai->real_device = -1; 2708 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2709 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2710 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2711 /** 2712 * @note 2713 * @c flags - OSSv4 docs: "Reserved for future use." 2714 * 2715 * @note 2716 * @c binding - OSSv4 docs: "Reserved for future use." 2717 * 2718 * @todo @c handle - haven't decided how to generate 2719 * this yet; bus, vendor, device IDs? 2720 */ 2721 ai->min_rate = caps->minspeed; 2722 ai->max_rate = caps->maxspeed; 2723 2724 ai->min_channels = minch; 2725 ai->max_channels = maxch; 2726 2727 ai->nrates = chn_getrates(ch, &rates); 2728 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2729 ai->nrates = OSS_MAX_SAMPLE_RATES; 2730 2731 for (i = 0; i < ai->nrates; i++) 2732 ai->rates[i] = rates[i]; 2733 2734 ai->next_play_engine = 0; 2735 ai->next_rec_engine = 0; 2736 2737 CHN_UNLOCK(ch); 2738 } 2739 2740 PCM_UNLOCK(d); 2741 2742 if (devname != NULL) 2743 return (0); 2744 } 2745 2746 /* Exhausted the search -- nothing is locked, so return. */ 2747 return (EINVAL); 2748} 2749 2750/** 2751 * @brief Assigns a PCM channel to a sync group. 2752 * 2753 * Sync groups are used to enable audio operations on multiple devices 2754 * simultaneously. They may be used with any number of devices and may 2755 * span across applications. Devices are added to groups with 2756 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2757 * SNDCTL_DSP_SYNCSTART ioctl. 2758 * 2759 * If the @c id field of the @c group parameter is set to zero, then a new 2760 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2761 * the group specified. 2762 * 2763 * @todo As far as memory allocation, should we assume that things are 2764 * okay and allocate with M_WAITOK before acquiring channel locks, 2765 * freeing later if not? 2766 * 2767 * @param wrch output channel associated w/ device (if any) 2768 * @param rdch input channel associated w/ device (if any) 2769 * @param group Sync group parameters 2770 * 2771 * @retval 0 success 2772 * @retval non-zero error to be propagated upstream 2773 */ 2774static int 2775dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2776{ 2777 struct pcmchan_syncmember *smrd, *smwr; 2778 struct pcmchan_syncgroup *sg; 2779 int ret, sg_ids[3]; 2780 2781 smrd = NULL; 2782 smwr = NULL; 2783 sg = NULL; 2784 ret = 0; 2785 2786 /* 2787 * Free_unr() may sleep, so store released syncgroup IDs until after 2788 * all locks are released. 2789 */ 2790 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2791 2792 PCM_SG_LOCK(); 2793 2794 /* 2795 * - Insert channel(s) into group's member list. 2796 * - Set CHN_F_NOTRIGGER on channel(s). 2797 * - Stop channel(s). 2798 */ 2799 2800 /* 2801 * If device's channels are already mapped to a group, unmap them. 2802 */ 2803 if (wrch) { 2804 CHN_LOCK(wrch); 2805 sg_ids[0] = chn_syncdestroy(wrch); 2806 } 2807 2808 if (rdch) { 2809 CHN_LOCK(rdch); 2810 sg_ids[1] = chn_syncdestroy(rdch); 2811 } 2812 2813 /* 2814 * Verify that mode matches character device properites. 2815 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2816 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2817 */ 2818 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2819 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2820 ret = EINVAL; 2821 goto out; 2822 } 2823 2824 /* 2825 * An id of zero indicates the user wants to create a new 2826 * syncgroup. 2827 */ 2828 if (group->id == 0) { 2829 sg = (struct pcmchan_syncgroup *)malloc(sizeof(*sg), M_DEVBUF, M_NOWAIT); 2830 if (sg != NULL) { 2831 SLIST_INIT(&sg->members); 2832 sg->id = alloc_unr(pcmsg_unrhdr); 2833 2834 group->id = sg->id; 2835 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2836 } else 2837 ret = ENOMEM; 2838 } else { 2839 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2840 if (sg->id == group->id) 2841 break; 2842 } 2843 if (sg == NULL) 2844 ret = EINVAL; 2845 } 2846 2847 /* Couldn't create or find a syncgroup. Fail. */ 2848 if (sg == NULL) 2849 goto out; 2850 2851 /* 2852 * Allocate a syncmember, assign it and a channel together, and 2853 * insert into syncgroup. 2854 */ 2855 if (group->mode & PCM_ENABLE_INPUT) { 2856 smrd = (struct pcmchan_syncmember *)malloc(sizeof(*smrd), M_DEVBUF, M_NOWAIT); 2857 if (smrd == NULL) { 2858 ret = ENOMEM; 2859 goto out; 2860 } 2861 2862 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2863 smrd->parent = sg; 2864 smrd->ch = rdch; 2865 2866 chn_abort(rdch); 2867 rdch->flags |= CHN_F_NOTRIGGER; 2868 rdch->sm = smrd; 2869 } 2870 2871 if (group->mode & PCM_ENABLE_OUTPUT) { 2872 smwr = (struct pcmchan_syncmember *)malloc(sizeof(*smwr), M_DEVBUF, M_NOWAIT); 2873 if (smwr == NULL) { 2874 ret = ENOMEM; 2875 goto out; 2876 } 2877 2878 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2879 smwr->parent = sg; 2880 smwr->ch = wrch; 2881 2882 chn_abort(wrch); 2883 wrch->flags |= CHN_F_NOTRIGGER; 2884 wrch->sm = smwr; 2885 } 2886 2887 2888out: 2889 if (ret != 0) { 2890 if (smrd != NULL) 2891 free(smrd, M_DEVBUF); 2892 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2893 sg_ids[2] = sg->id; 2894 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2895 free(sg, M_DEVBUF); 2896 } 2897 2898 if (wrch) 2899 wrch->sm = NULL; 2900 if (rdch) 2901 rdch->sm = NULL; 2902 } 2903 2904 if (wrch) 2905 CHN_UNLOCK(wrch); 2906 if (rdch) 2907 CHN_UNLOCK(rdch); 2908 2909 PCM_SG_UNLOCK(); 2910 2911 if (sg_ids[0]) 2912 free_unr(pcmsg_unrhdr, sg_ids[0]); 2913 if (sg_ids[1]) 2914 free_unr(pcmsg_unrhdr, sg_ids[1]); 2915 if (sg_ids[2]) 2916 free_unr(pcmsg_unrhdr, sg_ids[2]); 2917 2918 return (ret); 2919} 2920 2921/** 2922 * @brief Launch a sync group into action 2923 * 2924 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2925 * iterates over all members, triggering them along the way. 2926 * 2927 * @note Caller must not hold any channel locks. 2928 * 2929 * @param sg_id sync group identifier 2930 * 2931 * @retval 0 success 2932 * @retval non-zero error worthy of propagating upstream to user 2933 */ 2934static int 2935dsp_oss_syncstart(int sg_id) 2936{ 2937 struct pcmchan_syncmember *sm, *sm_tmp; 2938 struct pcmchan_syncgroup *sg; 2939 struct pcm_channel *c; 2940 int ret, needlocks; 2941 2942 /* Get the synclists lock */ 2943 PCM_SG_LOCK(); 2944 2945 do { 2946 ret = 0; 2947 needlocks = 0; 2948 2949 /* Search for syncgroup by ID */ 2950 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2951 if (sg->id == sg_id) 2952 break; 2953 } 2954 2955 /* Return EINVAL if not found */ 2956 if (sg == NULL) { 2957 ret = EINVAL; 2958 break; 2959 } 2960 2961 /* Any removals resulting in an empty group should've handled this */ 2962 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 2963 2964 /* 2965 * Attempt to lock all member channels - if any are already 2966 * locked, unlock those acquired, sleep for a bit, and try 2967 * again. 2968 */ 2969 SLIST_FOREACH(sm, &sg->members, link) { 2970 if (CHN_TRYLOCK(sm->ch) == 0) { 2971 int timo = hz * 5/1000; 2972 if (timo < 1) 2973 timo = 1; 2974 2975 /* Release all locked channels so far, retry */ 2976 SLIST_FOREACH(sm_tmp, &sg->members, link) { 2977 /* sm is the member already locked */ 2978 if (sm == sm_tmp) 2979 break; 2980 CHN_UNLOCK(sm_tmp->ch); 2981 } 2982 2983 /** @todo Is PRIBIO correct/ */ 2984 ret = msleep(sm, &snd_pcm_syncgroups_mtx, 2985 PRIBIO | PCATCH, "pcmsg", timo); 2986 if (ret == EINTR || ret == ERESTART) 2987 break; 2988 2989 needlocks = 1; 2990 ret = 0; /* Assumes ret == EAGAIN... */ 2991 } 2992 } 2993 } while (needlocks && ret == 0); 2994 2995 /* Proceed only if no errors encountered. */ 2996 if (ret == 0) { 2997 /* Launch channels */ 2998 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 2999 SLIST_REMOVE_HEAD(&sg->members, link); 3000 3001 c = sm->ch; 3002 c->sm = NULL; 3003 chn_start(c, 1); 3004 c->flags &= ~CHN_F_NOTRIGGER; 3005 CHN_UNLOCK(c); 3006 3007 free(sm, M_DEVBUF); 3008 } 3009 3010 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3011 free(sg, M_DEVBUF); 3012 } 3013 3014 PCM_SG_UNLOCK(); 3015 3016 /* 3017 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3018 * first. 3019 */ 3020 if (ret == 0) 3021 free_unr(pcmsg_unrhdr, sg_id); 3022 3023 return (ret); 3024} 3025 3026/** 3027 * @brief Handler for SNDCTL_DSP_POLICY 3028 * 3029 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3030 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3031 * specifying those two parameters, s/he simply selects a number from 0..10 3032 * which corresponds to a buffer size. Smaller numbers request smaller 3033 * buffers with lower latencies (at greater overhead from more frequent 3034 * interrupts), while greater numbers behave in the opposite manner. 3035 * 3036 * The 4Front spec states that a value of 5 should be the default. However, 3037 * this implementation deviates slightly by using a linear scale without 3038 * consulting drivers. I.e., even though drivers may have different default 3039 * buffer sizes, a policy argument of 5 will have the same result across 3040 * all drivers. 3041 * 3042 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3043 * more information. 3044 * 3045 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3046 * work with hardware drivers directly. 3047 * 3048 * @note PCM channel arguments must not be locked by caller. 3049 * 3050 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3051 * @param rdch " recording channel (optional; may be NULL) 3052 * @param policy Integer from [0:10] 3053 * 3054 * @retval 0 constant (for now) 3055 */ 3056static int 3057dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3058{ 3059 int ret; 3060 3061 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3062 return (EIO); 3063 3064 /* Default: success */ 3065 ret = 0; 3066 3067 if (rdch) { 3068 CHN_LOCK(rdch); 3069 ret = chn_setlatency(rdch, policy); 3070 CHN_UNLOCK(rdch); 3071 } 3072 3073 if (wrch && ret == 0) { 3074 CHN_LOCK(wrch); 3075 ret = chn_setlatency(wrch, policy); 3076 CHN_UNLOCK(wrch); 3077 } 3078 3079 if (ret) 3080 ret = EIO; 3081 3082 return (ret); 3083} 3084 3085/** 3086 * @brief Enable or disable "cooked" mode 3087 * 3088 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3089 * is the default, the sound system handles rate and format conversions 3090 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3091 * operates with 44100Hz/16bit/signed samples). 3092 * 3093 * Disabling cooked mode is intended for applications wanting to mmap() 3094 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3095 * feeder architecture, presumably to gain as much control over audio 3096 * hardware as possible. 3097 * 3098 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3099 * for more details. 3100 * 3101 * @param wrch playback channel (optional; may be NULL) 3102 * @param rdch recording channel (optional; may be NULL) 3103 * @param enabled 0 = raw mode, 1 = cooked mode 3104 * 3105 * @retval EINVAL Operation not yet supported. 3106 */ 3107static int 3108dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3109{ 3110 3111 /* 3112 * XXX I just don't get it. Why don't they call it 3113 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3114 * This is just plain so confusing, incoherent, 3115 * <insert any non-printable characters here>. 3116 */ 3117 if (!(enabled == 1 || enabled == 0)) 3118 return (EINVAL); 3119 3120 /* 3121 * I won't give in. I'm inverting its logic here and now. 3122 * Brag all you want, but "BITPERFECT" should be the better 3123 * term here. 3124 */ 3125 enabled ^= 0x00000001; 3126 3127 if (wrch != NULL) { 3128 CHN_LOCK(wrch); 3129 wrch->flags &= ~CHN_F_BITPERFECT; 3130 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3131 CHN_UNLOCK(wrch); 3132 } 3133 3134 if (rdch != NULL) { 3135 CHN_LOCK(rdch); 3136 rdch->flags &= ~CHN_F_BITPERFECT; 3137 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3138 CHN_UNLOCK(rdch); 3139 } 3140 3141 return (0); 3142} 3143 3144/** 3145 * @brief Retrieve channel interleaving order 3146 * 3147 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3148 * 3149 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3150 * for more details. 3151 * 3152 * @note As the ioctl definition is still under construction, FreeBSD 3153 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3154 * 3155 * @param wrch playback channel (optional; may be NULL) 3156 * @param rdch recording channel (optional; may be NULL) 3157 * @param map channel map (result will be stored there) 3158 * 3159 * @retval EINVAL Operation not yet supported. 3160 */ 3161static int 3162dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3163{ 3164 struct pcm_channel *ch; 3165 int ret; 3166 3167 ch = (wrch != NULL) ? wrch : rdch; 3168 if (ch != NULL) { 3169 CHN_LOCK(ch); 3170 ret = chn_oss_getorder(ch, map); 3171 CHN_UNLOCK(ch); 3172 } else 3173 ret = EINVAL; 3174 3175 return (ret); 3176} 3177 3178/** 3179 * @brief Specify channel interleaving order 3180 * 3181 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3182 * 3183 * @note As the ioctl definition is still under construction, FreeBSD 3184 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3185 * 3186 * @param wrch playback channel (optional; may be NULL) 3187 * @param rdch recording channel (optional; may be NULL) 3188 * @param map channel map 3189 * 3190 * @retval EINVAL Operation not yet supported. 3191 */ 3192static int 3193dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3194{ 3195 int ret; 3196 3197 ret = 0; 3198 3199 if (wrch != NULL) { 3200 CHN_LOCK(wrch); 3201 ret = chn_oss_setorder(wrch, map); 3202 CHN_UNLOCK(wrch); 3203 } 3204 3205 if (ret == 0 && rdch != NULL) { 3206 CHN_LOCK(rdch); 3207 ret = chn_oss_setorder(rdch, map); 3208 CHN_UNLOCK(rdch); 3209 } 3210 3211 return (ret); 3212} 3213 3214static int 3215dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3216 int *mask) 3217{ 3218 struct pcm_channel *ch; 3219 uint32_t chnmask; 3220 int ret; 3221 3222 chnmask = 0; 3223 ch = (wrch != NULL) ? wrch : rdch; 3224 3225 if (ch != NULL) { 3226 CHN_LOCK(ch); 3227 ret = chn_oss_getmask(ch, &chnmask); 3228 CHN_UNLOCK(ch); 3229 } else 3230 ret = EINVAL; 3231 3232 if (ret == 0) 3233 *mask = chnmask; 3234 3235 return (ret); 3236} 3237 3238#ifdef OSSV4_EXPERIMENT 3239/** 3240 * @brief Retrieve an audio device's label 3241 * 3242 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3243 * 3244 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3245 * for more details. 3246 * 3247 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3248 * consoles) can show variable "labels" for certain controls. By default 3249 * the application name (say quake) is shown as the label but 3250 * applications may change the labels themselves." 3251 * 3252 * @note As the ioctl definition is still under construction, FreeBSD 3253 * does not currently support @c SNDCTL_GETLABEL. 3254 * 3255 * @param wrch playback channel (optional; may be NULL) 3256 * @param rdch recording channel (optional; may be NULL) 3257 * @param label label gets copied here 3258 * 3259 * @retval EINVAL Operation not yet supported. 3260 */ 3261static int 3262dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3263{ 3264 return (EINVAL); 3265} 3266 3267/** 3268 * @brief Specify an audio device's label 3269 * 3270 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3271 * comments for @c dsp_oss_getlabel immediately above. 3272 * 3273 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3274 * for more details. 3275 * 3276 * @note As the ioctl definition is still under construction, FreeBSD 3277 * does not currently support SNDCTL_SETLABEL. 3278 * 3279 * @param wrch playback channel (optional; may be NULL) 3280 * @param rdch recording channel (optional; may be NULL) 3281 * @param label label gets copied from here 3282 * 3283 * @retval EINVAL Operation not yet supported. 3284 */ 3285static int 3286dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3287{ 3288 return (EINVAL); 3289} 3290 3291/** 3292 * @brief Retrieve name of currently played song 3293 * 3294 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3295 * tell the system the name of the currently playing song, which would be 3296 * visible in @c /dev/sndstat. 3297 * 3298 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3299 * for more details. 3300 * 3301 * @note As the ioctl definition is still under construction, FreeBSD 3302 * does not currently support SNDCTL_GETSONG. 3303 * 3304 * @param wrch playback channel (optional; may be NULL) 3305 * @param rdch recording channel (optional; may be NULL) 3306 * @param song song name gets copied here 3307 * 3308 * @retval EINVAL Operation not yet supported. 3309 */ 3310static int 3311dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3312{ 3313 return (EINVAL); 3314} 3315 3316/** 3317 * @brief Retrieve name of currently played song 3318 * 3319 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3320 * tell the system the name of the currently playing song, which would be 3321 * visible in @c /dev/sndstat. 3322 * 3323 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3324 * for more details. 3325 * 3326 * @note As the ioctl definition is still under construction, FreeBSD 3327 * does not currently support SNDCTL_SETSONG. 3328 * 3329 * @param wrch playback channel (optional; may be NULL) 3330 * @param rdch recording channel (optional; may be NULL) 3331 * @param song song name gets copied from here 3332 * 3333 * @retval EINVAL Operation not yet supported. 3334 */ 3335static int 3336dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3337{ 3338 return (EINVAL); 3339} 3340 3341/** 3342 * @brief Rename a device 3343 * 3344 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3345 * 3346 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3347 * more details. 3348 * 3349 * From Hannu@4Front: "This call is used to change the device name 3350 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3351 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3352 * name depending on the current context (for example 'OSS virtual wave table 3353 * synth' or 'VoIP link to London')." 3354 * 3355 * @note As the ioctl definition is still under construction, FreeBSD 3356 * does not currently support SNDCTL_SETNAME. 3357 * 3358 * @param wrch playback channel (optional; may be NULL) 3359 * @param rdch recording channel (optional; may be NULL) 3360 * @param name new device name gets copied from here 3361 * 3362 * @retval EINVAL Operation not yet supported. 3363 */ 3364static int 3365dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3366{ 3367 return (EINVAL); 3368} 3369#endif /* !OSSV4_EXPERIMENT */ 3370