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/devfs.h> 36 #include <sys/device.h> 37 #include <sys/eventhandler.h> 38 #include <sys/lock.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 46 SND_DECLARE_FILE("$FreeBSD: head/sys/dev/sound/pcm/dsp.c 274035 2014-11-03 11:11:45Z bapt $"); 47 48 static int dsp_mmap_allow_prot_exec = 0; 49 SYSCTL_INT(_hw_snd, OID_AUTO, compat_linux_mmap, CTLFLAG_RW, 50 &dsp_mmap_allow_prot_exec, 0, 51 "linux mmap compatibility (-1=force disable 0=auto 1=force enable)"); 52 53 struct dsp_cdevinfo { 54 struct pcm_channel *rdch, *wrch; 55 struct pcm_channel *volch; 56 int busy, simplex; 57 TAILQ_ENTRY(dsp_cdevinfo) link; 58 }; 59 60 #define PCM_RDCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->rdch) 61 #define PCM_WRCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->wrch) 62 #define PCM_VOLCH(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->volch) 63 #define PCM_SIMPLEX(x) (((struct dsp_cdevinfo *)(x)->si_drv1)->simplex) 64 65 #define DSP_CDEVINFO_CACHESIZE 8 66 67 #define DSP_REGISTERED(x, y) (PCM_REGISTERED(x) && \ 68 (y) != NULL && (y)->si_drv1 != NULL) 69 70 #define OLDPCM_IOCTL 71 72 static d_open_t dsp_open; 73 static d_close_t dsp_close; 74 static d_read_t dsp_read; 75 static d_write_t dsp_write; 76 static d_ioctl_t dsp_ioctl; 77 static d_kqfilter_t dsp_kqfilter; 78 static d_mmap_t dsp_mmap; 79 static d_mmap_single_t dsp_mmap_single; 80 81 static void dsp_filter_detach(struct knote *); 82 static int dsp_filter_read(struct knote *, long); 83 static int dsp_filter_write(struct knote *, long); 84 85 DEVFS_DEFINE_CLONE_BITMAP(dsp); 86 87 struct dev_ops dsp_ops = { 88 { "sound", 0, D_MPSAFE }, 89 .d_open = dsp_open, 90 .d_close = dsp_close, 91 .d_read = dsp_read, 92 .d_write = dsp_write, 93 .d_ioctl = dsp_ioctl, 94 .d_kqfilter = dsp_kqfilter, 95 .d_mmap = dsp_mmap, 96 .d_mmap_single = dsp_mmap_single, 97 }; 98 99 static eventhandler_tag dsp_ehtag = NULL; 100 static int dsp_umax = -1; 101 static int dsp_cmax = -1; 102 103 static int dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group); 104 static int dsp_oss_syncstart(int sg_id); 105 static int dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy); 106 static int dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled); 107 static int dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 108 static int dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map); 109 static int dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, int *mask); 110 #ifdef OSSV4_EXPERIMENT 111 static int dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 112 static int dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label); 113 static int dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 114 static int dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song); 115 static int dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name); 116 #endif 117 118 static struct snddev_info * 119 dsp_get_info(struct cdev *dev) 120 { 121 return (devclass_get_softc(pcm_devclass, PCMUNIT(dev))); 122 } 123 124 static uint32_t 125 dsp_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 } 133 134 static void 135 dsp_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 */ 149 static int 150 getchns(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 */ 216 static void 217 relchns(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 } 225 226 static void 227 dsp_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 = kmalloc(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 } 273 274 static void 275 dsp_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_MUTABLE(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 kfree(cdi, M_DEVBUF); 324 } else 325 i--; 326 } 327 } 328 dsp_set_flags(dev, flags); 329 } 330 331 void 332 dsp_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 = kmalloc(sizeof(*cdi), M_DEVBUF, M_WAITOK | M_ZERO); 344 TAILQ_INSERT_HEAD(&d->dsp_cdevinfo_pool, cdi, link); 345 } 346 } 347 348 void 349 dsp_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 kfree(cdi, M_DEVBUF); 361 cdi = tmp; 362 } 363 TAILQ_INIT(&d->dsp_cdevinfo_pool); 364 } 365 366 /* duplex / simplex cdev type */ 367 enum { 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 }; 372 373 enum { 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) 384 385 static 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) 449 450 static int 451 dsp_open(struct dev_open_args *ap) 452 { 453 struct cdev *i_dev = ap->a_head.a_dev; 454 int flags = ap->a_oflags; 455 struct pcm_channel *rdch, *wrch; 456 struct snddev_info *d; 457 uint32_t fmt, spd, prio, volctl; 458 int i, error, rderror, wrerror, devtype, wdevunit, rdevunit; 459 460 /* Kind of impossible.. */ 461 if (i_dev == NULL) 462 return (ENODEV); 463 464 d = dsp_get_info(i_dev); 465 if (!PCM_REGISTERED(d)) 466 return (EBADF); 467 468 PCM_GIANT_ENTER(d); 469 470 /* Lock snddev so nobody else can monkey with it. */ 471 PCM_LOCK(d); 472 PCM_WAIT(d); 473 474 /* 475 * Try to acquire cloned device before someone else pick it. 476 * ENODEV means this is not a cloned droids. 477 */ 478 error = snd_clone_acquire(i_dev); 479 if (!(error == 0 || error == ENODEV)) { 480 DSP_FIXUP_ERROR(); 481 PCM_UNLOCK(d); 482 PCM_GIANT_EXIT(d); 483 return (error); 484 } 485 486 error = 0; 487 DSP_FIXUP_ERROR(); 488 489 if (error != 0) { 490 (void)snd_clone_release(i_dev); 491 PCM_UNLOCK(d); 492 PCM_GIANT_EXIT(d); 493 return (error); 494 } 495 496 /* 497 * That is just enough. Acquire and unlock pcm lock so 498 * the other will just have to wait until we finish doing 499 * everything. 500 */ 501 PCM_ACQUIRE(d); 502 PCM_UNLOCK(d); 503 504 devtype = PCMDEV(i_dev); 505 wdevunit = -1; 506 rdevunit = -1; 507 fmt = 0; 508 spd = 0; 509 volctl = DSP_CDEV_VOLCTL_NONE; 510 511 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 512 if (devtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 513 continue; 514 /* 515 * Volume control only valid for DSPHW devices, 516 * and it must be opened in opposite direction be it 517 * simplex or duplex. Anything else will be handled 518 * as usual. 519 */ 520 if (dsp_cdevs[i].query == DSP_CDEV_TYPE_WRONLY) { 521 if (dsp_cdevs[i].volctl != 0 && 522 DSP_F_READ(flags)) { 523 volctl = DSP_CDEV_VOLCTL_WRITE; 524 flags &= ~FREAD; 525 flags |= FWRITE; 526 } 527 if (DSP_F_READ(flags)) { 528 (void)snd_clone_release(i_dev); 529 PCM_RELEASE_QUICK(d); 530 PCM_GIANT_EXIT(d); 531 return (ENOTSUP); 532 } 533 wdevunit = dev2unit(i_dev); 534 } else if (dsp_cdevs[i].query == DSP_CDEV_TYPE_RDONLY) { 535 if (dsp_cdevs[i].volctl != 0 && 536 DSP_F_WRITE(flags)) { 537 volctl = DSP_CDEV_VOLCTL_READ; 538 flags &= ~FWRITE; 539 flags |= FREAD; 540 } 541 if (DSP_F_WRITE(flags)) { 542 (void)snd_clone_release(i_dev); 543 PCM_RELEASE_QUICK(d); 544 PCM_GIANT_EXIT(d); 545 return (ENOTSUP); 546 } 547 rdevunit = dev2unit(i_dev); 548 } 549 fmt = dsp_cdevs[i].fmt; 550 spd = dsp_cdevs[i].spd; 551 break; 552 } 553 554 rdch = NULL; 555 wrch = NULL; 556 rderror = 0; 557 wrerror = 0; 558 559 /* 560 * if we get here, the open request is valid- either: 561 * * we were previously not open 562 * * we were open for play xor record and the opener wants 563 * the non-open direction 564 */ 565 if (DSP_F_READ(flags)) { 566 /* open for read */ 567 rderror = pcm_chnalloc(d, &rdch, PCMDIR_REC, 568 curproc->p_pid, curproc->p_comm, rdevunit); 569 570 if (rderror == 0 && chn_reset(rdch, fmt, spd) != 0) 571 rderror = ENXIO; 572 573 if (volctl == DSP_CDEV_VOLCTL_READ) 574 rderror = 0; 575 576 if (rderror != 0) { 577 if (rdch != NULL) 578 pcm_chnrelease(rdch); 579 if (!DSP_F_DUPLEX(flags)) { 580 (void)snd_clone_release(i_dev); 581 PCM_RELEASE_QUICK(d); 582 PCM_GIANT_EXIT(d); 583 return (rderror); 584 } 585 rdch = NULL; 586 } else if (volctl == DSP_CDEV_VOLCTL_READ) { 587 if (rdch != NULL) { 588 pcm_chnref(rdch, 1); 589 pcm_chnrelease(rdch); 590 } 591 } else { 592 if (flags & O_EXCL) 593 rdch->flags |= CHN_F_EXCLUSIVE; 594 pcm_chnref(rdch, 1); 595 if (volctl == DSP_CDEV_VOLCTL_NONE) 596 chn_vpc_reset(rdch, SND_VOL_C_PCM, 0); 597 CHN_UNLOCK(rdch); 598 } 599 } 600 601 if (DSP_F_WRITE(flags)) { 602 /* open for write */ 603 wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY, 604 curproc->p_pid, curproc->p_comm, wdevunit); 605 606 if (wrerror == 0 && chn_reset(wrch, fmt, spd) != 0) 607 wrerror = ENXIO; 608 609 if (volctl == DSP_CDEV_VOLCTL_WRITE) 610 wrerror = 0; 611 612 if (wrerror != 0) { 613 if (wrch != NULL) 614 pcm_chnrelease(wrch); 615 if (!DSP_F_DUPLEX(flags)) { 616 if (rdch != NULL) { 617 /* 618 * Lock, deref and release previously 619 * created record channel 620 */ 621 CHN_LOCK(rdch); 622 pcm_chnref(rdch, -1); 623 pcm_chnrelease(rdch); 624 } 625 (void)snd_clone_release(i_dev); 626 PCM_RELEASE_QUICK(d); 627 PCM_GIANT_EXIT(d); 628 return (wrerror); 629 } 630 wrch = NULL; 631 } else if (volctl == DSP_CDEV_VOLCTL_WRITE) { 632 if (wrch != NULL) { 633 pcm_chnref(wrch, 1); 634 pcm_chnrelease(wrch); 635 } 636 } else { 637 if (flags & O_EXCL) 638 wrch->flags |= CHN_F_EXCLUSIVE; 639 pcm_chnref(wrch, 1); 640 if (volctl == DSP_CDEV_VOLCTL_NONE) 641 chn_vpc_reset(wrch, SND_VOL_C_PCM, 0); 642 CHN_UNLOCK(wrch); 643 } 644 } 645 646 647 PCM_LOCK(d); 648 649 /* 650 * We're done. Allocate channels information for this cdev. 651 */ 652 switch (volctl) { 653 case DSP_CDEV_VOLCTL_READ: 654 KASSERT(wrch == NULL, ("wrch=%p not null!", wrch)); 655 dsp_cdevinfo_alloc(i_dev, NULL, NULL, rdch); 656 break; 657 case DSP_CDEV_VOLCTL_WRITE: 658 KASSERT(rdch == NULL, ("rdch=%p not null!", rdch)); 659 dsp_cdevinfo_alloc(i_dev, NULL, NULL, wrch); 660 break; 661 case DSP_CDEV_VOLCTL_NONE: 662 default: 663 if (wrch == NULL && rdch == NULL) { 664 (void)snd_clone_release(i_dev); 665 PCM_RELEASE(d); 666 PCM_UNLOCK(d); 667 PCM_GIANT_EXIT(d); 668 if (wrerror != 0) 669 return (wrerror); 670 if (rderror != 0) 671 return (rderror); 672 return (EINVAL); 673 } 674 dsp_cdevinfo_alloc(i_dev, rdch, wrch, NULL); 675 if (rdch != NULL) 676 CHN_INSERT_HEAD(d, rdch, channels.pcm.opened); 677 if (wrch != NULL) 678 CHN_INSERT_HEAD(d, wrch, channels.pcm.opened); 679 break; 680 } 681 682 /* 683 * Increase clone refcount for its automatic garbage collector. 684 */ 685 (void)snd_clone_ref(i_dev); 686 687 PCM_RELEASE(d); 688 PCM_UNLOCK(d); 689 690 PCM_GIANT_LEAVE(d); 691 692 return (0); 693 } 694 695 static int 696 dsp_close(struct dev_close_args *ap) 697 { 698 struct cdev *i_dev = ap->a_head.a_dev; 699 struct pcm_channel *rdch, *wrch, *volch; 700 struct snddev_info *d; 701 int sg_ids, rdref, wdref; 702 int subunit; 703 704 /* 705 * subunit is a unique number for the cloned device, it 706 * does NOT represent the virtual device channel. 707 */ 708 subunit = PCMSUBUNIT(i_dev); 709 710 d = dsp_get_info(i_dev); 711 if (!DSP_REGISTERED(d, i_dev)) 712 return (EBADF); 713 714 PCM_GIANT_ENTER(d); 715 716 PCM_LOCK(d); 717 PCM_WAIT(d); 718 PCM_ACQUIRE(d); 719 720 rdch = PCM_RDCH(i_dev); 721 wrch = PCM_WRCH(i_dev); 722 volch = PCM_VOLCH(i_dev); 723 724 PCM_RDCH(i_dev) = NULL; 725 PCM_WRCH(i_dev) = NULL; 726 PCM_VOLCH(i_dev) = NULL; 727 728 rdref = -1; 729 wdref = -1; 730 731 if (volch != NULL) { 732 if (volch == rdch) 733 rdref--; 734 else if (volch == wrch) 735 wdref--; 736 else { 737 CHN_LOCK(volch); 738 pcm_chnref(volch, -1); 739 CHN_UNLOCK(volch); 740 } 741 } 742 743 if (rdch != NULL) 744 CHN_REMOVE(d, rdch, channels.pcm.opened); 745 if (wrch != NULL) 746 CHN_REMOVE(d, wrch, channels.pcm.opened); 747 748 if (rdch != NULL || wrch != NULL) { 749 PCM_UNLOCK(d); 750 if (rdch != NULL) { 751 /* 752 * The channel itself need not be locked because: 753 * a) Adding a channel to a syncgroup happens only 754 * in dsp_ioctl(), which cannot run concurrently 755 * to dsp_close(). 756 * b) The syncmember pointer (sm) is protected by 757 * the global syncgroup list lock. 758 * c) A channel can't just disappear, invalidating 759 * pointers, unless it's closed/dereferenced 760 * first. 761 */ 762 PCM_SG_LOCK(); 763 sg_ids = chn_syncdestroy(rdch); 764 PCM_SG_UNLOCK(); 765 if (sg_ids != 0) 766 free_unr(pcmsg_unrhdr, sg_ids); 767 768 CHN_LOCK(rdch); 769 pcm_chnref(rdch, rdref); 770 chn_abort(rdch); /* won't sleep */ 771 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 772 CHN_F_DEAD | CHN_F_EXCLUSIVE); 773 chn_reset(rdch, 0, 0); 774 pcm_chnrelease(rdch); 775 } 776 if (wrch != NULL) { 777 /* 778 * Please see block above. 779 */ 780 PCM_SG_LOCK(); 781 sg_ids = chn_syncdestroy(wrch); 782 PCM_SG_UNLOCK(); 783 if (sg_ids != 0) 784 free_unr(pcmsg_unrhdr, sg_ids); 785 786 CHN_LOCK(wrch); 787 pcm_chnref(wrch, wdref); 788 chn_flush(wrch); /* may sleep */ 789 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 790 CHN_F_DEAD | CHN_F_EXCLUSIVE); 791 chn_reset(wrch, 0, 0); 792 pcm_chnrelease(wrch); 793 } 794 PCM_LOCK(d); 795 } 796 797 dsp_cdevinfo_free(i_dev); 798 /* 799 * Release clone busy state and unref it so the automatic 800 * garbage collector will get the hint and do the remaining 801 * cleanup process. 802 */ 803 (void)snd_clone_release(i_dev); 804 805 /* 806 * destroy_dev() might sleep, so release pcm lock 807 * here and rely on pcm cv serialization. 808 */ 809 PCM_UNLOCK(d); 810 (void)snd_clone_unref(i_dev); 811 PCM_LOCK(d); 812 813 PCM_RELEASE(d); 814 PCM_UNLOCK(d); 815 816 PCM_GIANT_LEAVE(d); 817 818 /* 819 * PCMCHAN(i_dev) is not the actual channel but instead is 820 * simply the unique subunit we assigned to the clone device. 821 * 822 * We do not do this here but instead do it when the clone is 823 * GCd. 824 */ 825 /* 826 devfs_clone_bitmap_put(&DEVFS_CLONE_BITMAP(dsp), subunit); 827 */ 828 829 return (0); 830 } 831 832 static __inline int 833 dsp_io_ops(struct cdev *i_dev, struct uio *buf, int ioflags) 834 { 835 struct snddev_info *d; 836 struct pcm_channel **ch, *rdch, *wrch; 837 int (*chn_io)(struct pcm_channel *, struct uio *, int); 838 int prio, ret; 839 pid_t runpid; 840 841 KASSERT(i_dev != NULL && buf != NULL && 842 (buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE), 843 ("%s(): io train wreck!", __func__)); 844 845 d = dsp_get_info(i_dev); 846 if (!DSP_REGISTERED(d, i_dev)) 847 return (EBADF); 848 849 PCM_GIANT_ENTER(d); 850 851 switch (buf->uio_rw) { 852 case UIO_READ: 853 prio = SD_F_PRIO_RD; 854 ch = &rdch; 855 chn_io = chn_read; 856 break; 857 case UIO_WRITE: 858 prio = SD_F_PRIO_WR; 859 ch = &wrch; 860 chn_io = chn_write; 861 break; 862 default: 863 panic("invalid/corrupted uio direction: %d", buf->uio_rw); 864 break; 865 } 866 867 rdch = NULL; 868 wrch = NULL; 869 runpid = buf->uio_td->td_proc->p_pid; 870 871 getchns(i_dev, &rdch, &wrch, prio); 872 873 if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) { 874 PCM_GIANT_EXIT(d); 875 return (EBADF); 876 } 877 878 if (((*ch)->flags & (CHN_F_MMAP | CHN_F_DEAD)) || 879 (((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) { 880 relchns(i_dev, rdch, wrch, prio); 881 PCM_GIANT_EXIT(d); 882 return (EINVAL); 883 } else if (!((*ch)->flags & CHN_F_RUNNING)) { 884 (*ch)->flags |= CHN_F_RUNNING; 885 (*ch)->pid = runpid; 886 } 887 888 /* 889 * chn_read/write must give up channel lock in order to copy bytes 890 * from/to userland, so up the "in progress" counter to make sure 891 * someone else doesn't come along and muss up the buffer. 892 */ 893 ++(*ch)->inprog; 894 ret = chn_io(*ch, buf, ioflags); 895 --(*ch)->inprog; 896 897 CHN_BROADCAST(&(*ch)->cv); 898 899 relchns(i_dev, rdch, wrch, prio); 900 901 PCM_GIANT_LEAVE(d); 902 903 return (ret); 904 } 905 906 static int 907 dsp_read(struct dev_read_args *ap) 908 { 909 struct cdev *i_dev = ap->a_head.a_dev; 910 struct uio *buf = ap->a_uio; 911 912 return (dsp_io_ops(i_dev, buf, ap->a_ioflag)); 913 } 914 915 static int 916 dsp_write(struct dev_write_args *ap) 917 { 918 struct cdev *i_dev = ap->a_head.a_dev; 919 struct uio *buf = ap->a_uio; 920 921 return (dsp_io_ops(i_dev, buf, ap->a_ioflag)); 922 } 923 924 static int 925 dsp_get_volume_channel(struct cdev *dev, struct pcm_channel **volch) 926 { 927 struct snddev_info *d; 928 struct pcm_channel *c; 929 int unit; 930 931 KASSERT(dev != NULL && volch != NULL, 932 ("%s(): NULL query dev=%p volch=%p", __func__, dev, volch)); 933 934 d = dsp_get_info(dev); 935 if (!PCM_REGISTERED(d)) { 936 *volch = NULL; 937 return (EINVAL); 938 } 939 940 PCM_UNLOCKASSERT(d); 941 942 *volch = NULL; 943 944 c = PCM_VOLCH(dev); 945 if (c != NULL) { 946 if (!(c->feederflags & (1 << FEEDER_VOLUME))) 947 return (-1); 948 *volch = c; 949 return (0); 950 } 951 952 PCM_LOCK(d); 953 PCM_WAIT(d); 954 PCM_ACQUIRE(d); 955 956 unit = dev2unit(dev); 957 958 CHN_FOREACH(c, d, channels.pcm) { 959 CHN_LOCK(c); 960 if (c->unit != unit) { 961 CHN_UNLOCK(c); 962 continue; 963 } 964 *volch = c; 965 pcm_chnref(c, 1); 966 PCM_VOLCH(dev) = c; 967 CHN_UNLOCK(c); 968 PCM_RELEASE(d); 969 PCM_UNLOCK(d); 970 return ((c->feederflags & (1 << FEEDER_VOLUME)) ? 0 : -1); 971 } 972 973 PCM_RELEASE(d); 974 PCM_UNLOCK(d); 975 976 return (EINVAL); 977 } 978 979 static int 980 dsp_ioctl_channel(struct cdev *dev, struct pcm_channel *volch, u_long cmd, 981 caddr_t arg) 982 { 983 struct snddev_info *d; 984 struct pcm_channel *rdch, *wrch; 985 int j, devtype, ret; 986 987 d = dsp_get_info(dev); 988 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 989 return (-1); 990 991 PCM_UNLOCKASSERT(d); 992 993 j = cmd & 0xff; 994 995 rdch = PCM_RDCH(dev); 996 wrch = PCM_WRCH(dev); 997 998 /* No specific channel, look into cache */ 999 if (volch == NULL) 1000 volch = PCM_VOLCH(dev); 1001 1002 /* Look harder */ 1003 if (volch == NULL) { 1004 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 1005 volch = rdch; 1006 else if (j == SOUND_MIXER_PCM && wrch != NULL) 1007 volch = wrch; 1008 } 1009 1010 devtype = PCMDEV(dev); 1011 1012 /* Look super harder */ 1013 if (volch == NULL && 1014 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 1015 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 1016 ret = dsp_get_volume_channel(dev, &volch); 1017 if (ret != 0) 1018 return (ret); 1019 if (volch == NULL) 1020 return (EINVAL); 1021 } 1022 1023 /* Final validation */ 1024 if (volch != NULL) { 1025 CHN_LOCK(volch); 1026 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 1027 CHN_UNLOCK(volch); 1028 return (-1); 1029 } 1030 if (volch->direction == PCMDIR_PLAY) 1031 wrch = volch; 1032 else 1033 rdch = volch; 1034 } 1035 1036 ret = EINVAL; 1037 1038 if (volch != NULL && 1039 ((j == SOUND_MIXER_PCM && volch->direction == PCMDIR_PLAY) || 1040 (j == SOUND_MIXER_RECLEV && volch->direction == PCMDIR_REC))) { 1041 if ((cmd & ~0xff) == MIXER_WRITE(0)) { 1042 int left, right, center; 1043 1044 left = *(int *)arg & 0x7f; 1045 right = ((*(int *)arg) >> 8) & 0x7f; 1046 center = (left + right) >> 1; 1047 chn_setvolume_multi(volch, SND_VOL_C_PCM, left, right, 1048 center); 1049 } else if ((cmd & ~0xff) == MIXER_READ(0)) { 1050 *(int *)arg = CHN_GETVOLUME(volch, 1051 SND_VOL_C_PCM, SND_CHN_T_FL); 1052 *(int *)arg |= CHN_GETVOLUME(volch, 1053 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1054 } 1055 ret = 0; 1056 } else if (rdch != NULL || wrch != NULL) { 1057 switch (j) { 1058 case SOUND_MIXER_DEVMASK: 1059 case SOUND_MIXER_CAPS: 1060 case SOUND_MIXER_STEREODEVS: 1061 if ((cmd & ~0xff) == MIXER_READ(0)) { 1062 *(int *)arg = 0; 1063 if (rdch != NULL) 1064 *(int *)arg |= SOUND_MASK_RECLEV; 1065 if (wrch != NULL) 1066 *(int *)arg |= SOUND_MASK_PCM; 1067 } 1068 ret = 0; 1069 break; 1070 case SOUND_MIXER_RECMASK: 1071 case SOUND_MIXER_RECSRC: 1072 if ((cmd & ~0xff) == MIXER_READ(0)) 1073 *(int *)arg = 0; 1074 ret = 0; 1075 break; 1076 default: 1077 break; 1078 } 1079 } 1080 1081 if (volch != NULL) 1082 CHN_UNLOCK(volch); 1083 1084 return (ret); 1085 } 1086 1087 static int 1088 dsp_ioctl(struct dev_ioctl_args *ap) 1089 { 1090 struct cdev *i_dev = ap->a_head.a_dev; 1091 u_long cmd = ap->a_cmd; 1092 caddr_t arg = ap->a_data; 1093 struct pcm_channel *chn, *rdch, *wrch; 1094 struct snddev_info *d; 1095 u_long xcmd; 1096 int *arg_i, ret, tmp; 1097 1098 d = dsp_get_info(i_dev); 1099 if (!DSP_REGISTERED(d, i_dev)) 1100 return (EBADF); 1101 1102 PCM_GIANT_ENTER(d); 1103 1104 arg_i = (int *)arg; 1105 ret = 0; 1106 xcmd = 0; 1107 chn = NULL; 1108 1109 if (IOCGROUP(cmd) == 'M') { 1110 if (cmd == OSS_GETVERSION) { 1111 *arg_i = SOUND_VERSION; 1112 PCM_GIANT_EXIT(d); 1113 return (0); 1114 } 1115 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1116 if (ret != -1) { 1117 PCM_GIANT_EXIT(d); 1118 return (ret); 1119 } 1120 1121 if (d->mixer_dev != NULL) { 1122 PCM_ACQUIRE_QUICK(d); 1123 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, 1124 MIXER_CMD_DIRECT); 1125 PCM_RELEASE_QUICK(d); 1126 } else 1127 ret = EBADF; 1128 1129 PCM_GIANT_EXIT(d); 1130 1131 return (ret); 1132 } 1133 1134 /* 1135 * Certain ioctls may be made on any type of device (audio, mixer, 1136 * and MIDI). Handle those special cases here. 1137 */ 1138 if (IOCGROUP(cmd) == 'X') { 1139 PCM_ACQUIRE_QUICK(d); 1140 switch(cmd) { 1141 case SNDCTL_SYSINFO: 1142 sound_oss_sysinfo((oss_sysinfo *)arg); 1143 break; 1144 case SNDCTL_CARDINFO: 1145 ret = sound_oss_card_info((oss_card_info *)arg); 1146 break; 1147 case SNDCTL_AUDIOINFO: 1148 case SNDCTL_AUDIOINFO_EX: 1149 case SNDCTL_ENGINEINFO: 1150 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1151 break; 1152 case SNDCTL_MIXERINFO: 1153 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1154 break; 1155 default: 1156 ret = EINVAL; 1157 } 1158 PCM_RELEASE_QUICK(d); 1159 PCM_GIANT_EXIT(d); 1160 return (ret); 1161 } 1162 1163 getchns(i_dev, &rdch, &wrch, 0); 1164 1165 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1166 wrch = NULL; 1167 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1168 rdch = NULL; 1169 1170 if (wrch == NULL && rdch == NULL) { 1171 PCM_GIANT_EXIT(d); 1172 return (EINVAL); 1173 } 1174 1175 switch(cmd) { 1176 #ifdef OLDPCM_IOCTL 1177 /* 1178 * we start with the new ioctl interface. 1179 */ 1180 case AIONWRITE: /* how many bytes can write ? */ 1181 if (wrch) { 1182 CHN_LOCK(wrch); 1183 /* 1184 if (wrch && wrch->bufhard.dl) 1185 while (chn_wrfeed(wrch) == 0); 1186 */ 1187 *arg_i = sndbuf_getfree(wrch->bufsoft); 1188 CHN_UNLOCK(wrch); 1189 } else { 1190 *arg_i = 0; 1191 ret = EINVAL; 1192 } 1193 break; 1194 1195 case AIOSSIZE: /* set the current blocksize */ 1196 { 1197 struct snd_size *p = (struct snd_size *)arg; 1198 1199 p->play_size = 0; 1200 p->rec_size = 0; 1201 PCM_ACQUIRE_QUICK(d); 1202 if (wrch) { 1203 CHN_LOCK(wrch); 1204 chn_setblocksize(wrch, 2, p->play_size); 1205 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1206 CHN_UNLOCK(wrch); 1207 } 1208 if (rdch) { 1209 CHN_LOCK(rdch); 1210 chn_setblocksize(rdch, 2, p->rec_size); 1211 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1212 CHN_UNLOCK(rdch); 1213 } 1214 PCM_RELEASE_QUICK(d); 1215 } 1216 break; 1217 case AIOGSIZE: /* get the current blocksize */ 1218 { 1219 struct snd_size *p = (struct snd_size *)arg; 1220 1221 if (wrch) { 1222 CHN_LOCK(wrch); 1223 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1224 CHN_UNLOCK(wrch); 1225 } 1226 if (rdch) { 1227 CHN_LOCK(rdch); 1228 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1229 CHN_UNLOCK(rdch); 1230 } 1231 } 1232 break; 1233 1234 case AIOSFMT: 1235 case AIOGFMT: 1236 { 1237 snd_chan_param *p = (snd_chan_param *)arg; 1238 1239 if (cmd == AIOSFMT && 1240 ((p->play_format != 0 && p->play_rate == 0) || 1241 (p->rec_format != 0 && p->rec_rate == 0))) { 1242 ret = EINVAL; 1243 break; 1244 } 1245 PCM_ACQUIRE_QUICK(d); 1246 if (wrch) { 1247 CHN_LOCK(wrch); 1248 if (cmd == AIOSFMT && p->play_format != 0) { 1249 chn_setformat(wrch, 1250 SND_FORMAT(p->play_format, 1251 AFMT_CHANNEL(wrch->format), 1252 AFMT_EXTCHANNEL(wrch->format))); 1253 chn_setspeed(wrch, p->play_rate); 1254 } 1255 p->play_rate = wrch->speed; 1256 p->play_format = AFMT_ENCODING(wrch->format); 1257 CHN_UNLOCK(wrch); 1258 } else { 1259 p->play_rate = 0; 1260 p->play_format = 0; 1261 } 1262 if (rdch) { 1263 CHN_LOCK(rdch); 1264 if (cmd == AIOSFMT && p->rec_format != 0) { 1265 chn_setformat(rdch, 1266 SND_FORMAT(p->rec_format, 1267 AFMT_CHANNEL(rdch->format), 1268 AFMT_EXTCHANNEL(rdch->format))); 1269 chn_setspeed(rdch, p->rec_rate); 1270 } 1271 p->rec_rate = rdch->speed; 1272 p->rec_format = AFMT_ENCODING(rdch->format); 1273 CHN_UNLOCK(rdch); 1274 } else { 1275 p->rec_rate = 0; 1276 p->rec_format = 0; 1277 } 1278 PCM_RELEASE_QUICK(d); 1279 } 1280 break; 1281 1282 case AIOGCAP: /* get capabilities */ 1283 { 1284 snd_capabilities *p = (snd_capabilities *)arg; 1285 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1286 struct cdev *pdev; 1287 1288 PCM_LOCK(d); 1289 if (rdch) { 1290 CHN_LOCK(rdch); 1291 rcaps = chn_getcaps(rdch); 1292 } 1293 if (wrch) { 1294 CHN_LOCK(wrch); 1295 pcaps = chn_getcaps(wrch); 1296 } 1297 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1298 pcaps? pcaps->minspeed : 0); 1299 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1300 pcaps? pcaps->maxspeed : 1000000); 1301 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1302 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1303 /* XXX bad on sb16 */ 1304 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1305 (wrch? chn_getformats(wrch) : 0xffffffff); 1306 if (rdch && wrch) 1307 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1308 pdev = d->mixer_dev; 1309 p->mixers = 1; /* default: one mixer */ 1310 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1311 p->left = p->right = 100; 1312 if (wrch) 1313 CHN_UNLOCK(wrch); 1314 if (rdch) 1315 CHN_UNLOCK(rdch); 1316 PCM_UNLOCK(d); 1317 } 1318 break; 1319 1320 case AIOSTOP: 1321 if (*arg_i == AIOSYNC_PLAY && wrch) { 1322 CHN_LOCK(wrch); 1323 *arg_i = chn_abort(wrch); 1324 CHN_UNLOCK(wrch); 1325 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1326 CHN_LOCK(rdch); 1327 *arg_i = chn_abort(rdch); 1328 CHN_UNLOCK(rdch); 1329 } else { 1330 kprintf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1331 *arg_i = 0; 1332 } 1333 break; 1334 1335 case AIOSYNC: 1336 kprintf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1337 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1338 break; 1339 #endif 1340 /* 1341 * here follow the standard ioctls (filio.h etc.) 1342 */ 1343 case FIONREAD: /* get # bytes to read */ 1344 if (rdch) { 1345 CHN_LOCK(rdch); 1346 /* if (rdch && rdch->bufhard.dl) 1347 while (chn_rdfeed(rdch) == 0); 1348 */ 1349 *arg_i = sndbuf_getready(rdch->bufsoft); 1350 CHN_UNLOCK(rdch); 1351 } else { 1352 *arg_i = 0; 1353 ret = EINVAL; 1354 } 1355 break; 1356 1357 case FIOASYNC: /*set/clear async i/o */ 1358 DEB( kprintf("FIOASYNC\n") ; ) 1359 break; 1360 1361 case FIONBIO: /* set/clear non-blocking i/o */ 1362 DEB( kprintf("FIONBIO\n") ; ) 1363 break; 1364 1365 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1366 atomic_set_int(&ap->a_fp->f_flag, FNONBLOCK); 1367 break; 1368 1369 /* 1370 * Finally, here is the linux-compatible ioctl interface 1371 */ 1372 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1373 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1374 case SNDCTL_DSP_GETBLKSIZE: 1375 chn = wrch ? wrch : rdch; 1376 if (chn) { 1377 CHN_LOCK(chn); 1378 *arg_i = sndbuf_getblksz(chn->bufsoft); 1379 CHN_UNLOCK(chn); 1380 } else { 1381 *arg_i = 0; 1382 ret = EINVAL; 1383 } 1384 break; 1385 1386 case SNDCTL_DSP_SETBLKSIZE: 1387 RANGE(*arg_i, 16, 65536); 1388 PCM_ACQUIRE_QUICK(d); 1389 if (wrch) { 1390 CHN_LOCK(wrch); 1391 chn_setblocksize(wrch, 2, *arg_i); 1392 CHN_UNLOCK(wrch); 1393 } 1394 if (rdch) { 1395 CHN_LOCK(rdch); 1396 chn_setblocksize(rdch, 2, *arg_i); 1397 CHN_UNLOCK(rdch); 1398 } 1399 PCM_RELEASE_QUICK(d); 1400 break; 1401 1402 case SNDCTL_DSP_RESET: 1403 DEB(kprintf("dsp reset\n")); 1404 if (wrch) { 1405 CHN_LOCK(wrch); 1406 chn_abort(wrch); 1407 chn_resetbuf(wrch); 1408 CHN_UNLOCK(wrch); 1409 } 1410 if (rdch) { 1411 CHN_LOCK(rdch); 1412 chn_abort(rdch); 1413 chn_resetbuf(rdch); 1414 CHN_UNLOCK(rdch); 1415 } 1416 break; 1417 1418 case SNDCTL_DSP_SYNC: 1419 DEB(kprintf("dsp sync\n")); 1420 /* chn_sync may sleep */ 1421 if (wrch) { 1422 CHN_LOCK(wrch); 1423 chn_sync(wrch, 0); 1424 CHN_UNLOCK(wrch); 1425 } 1426 break; 1427 1428 case SNDCTL_DSP_SPEED: 1429 /* chn_setspeed may sleep */ 1430 tmp = 0; 1431 PCM_ACQUIRE_QUICK(d); 1432 if (wrch) { 1433 CHN_LOCK(wrch); 1434 ret = chn_setspeed(wrch, *arg_i); 1435 tmp = wrch->speed; 1436 CHN_UNLOCK(wrch); 1437 } 1438 if (rdch && ret == 0) { 1439 CHN_LOCK(rdch); 1440 ret = chn_setspeed(rdch, *arg_i); 1441 if (tmp == 0) 1442 tmp = rdch->speed; 1443 CHN_UNLOCK(rdch); 1444 } 1445 PCM_RELEASE_QUICK(d); 1446 *arg_i = tmp; 1447 break; 1448 1449 case SOUND_PCM_READ_RATE: 1450 chn = wrch ? wrch : rdch; 1451 if (chn) { 1452 CHN_LOCK(chn); 1453 *arg_i = chn->speed; 1454 CHN_UNLOCK(chn); 1455 } else { 1456 *arg_i = 0; 1457 ret = EINVAL; 1458 } 1459 break; 1460 1461 case SNDCTL_DSP_STEREO: 1462 tmp = -1; 1463 *arg_i = (*arg_i)? 2 : 1; 1464 PCM_ACQUIRE_QUICK(d); 1465 if (wrch) { 1466 CHN_LOCK(wrch); 1467 ret = chn_setformat(wrch, 1468 SND_FORMAT(wrch->format, *arg_i, 0)); 1469 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1470 CHN_UNLOCK(wrch); 1471 } 1472 if (rdch && ret == 0) { 1473 CHN_LOCK(rdch); 1474 ret = chn_setformat(rdch, 1475 SND_FORMAT(rdch->format, *arg_i, 0)); 1476 if (tmp == -1) 1477 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1478 CHN_UNLOCK(rdch); 1479 } 1480 PCM_RELEASE_QUICK(d); 1481 *arg_i = tmp; 1482 break; 1483 1484 case SOUND_PCM_WRITE_CHANNELS: 1485 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1486 if (*arg_i < 0) { 1487 *arg_i = 0; 1488 ret = EINVAL; 1489 break; 1490 } 1491 if (*arg_i != 0) { 1492 struct pcmchan_matrix *m; 1493 uint32_t ext; 1494 1495 tmp = 0; 1496 if (*arg_i > SND_CHN_MAX) 1497 *arg_i = SND_CHN_MAX; 1498 1499 m = feeder_matrix_default_channel_map(*arg_i); 1500 if (m != NULL) 1501 ext = m->ext; 1502 else 1503 ext = 0; 1504 1505 PCM_ACQUIRE_QUICK(d); 1506 if (wrch) { 1507 CHN_LOCK(wrch); 1508 ret = chn_setformat(wrch, 1509 SND_FORMAT(wrch->format, *arg_i, ext)); 1510 tmp = AFMT_CHANNEL(wrch->format); 1511 CHN_UNLOCK(wrch); 1512 } 1513 if (rdch && ret == 0) { 1514 CHN_LOCK(rdch); 1515 ret = chn_setformat(rdch, 1516 SND_FORMAT(rdch->format, *arg_i, ext)); 1517 if (tmp == 0) 1518 tmp = AFMT_CHANNEL(rdch->format); 1519 CHN_UNLOCK(rdch); 1520 } 1521 PCM_RELEASE_QUICK(d); 1522 *arg_i = tmp; 1523 } else { 1524 chn = wrch ? wrch : rdch; 1525 CHN_LOCK(chn); 1526 *arg_i = AFMT_CHANNEL(chn->format); 1527 CHN_UNLOCK(chn); 1528 } 1529 break; 1530 1531 case SOUND_PCM_READ_CHANNELS: 1532 chn = wrch ? wrch : rdch; 1533 if (chn) { 1534 CHN_LOCK(chn); 1535 *arg_i = AFMT_CHANNEL(chn->format); 1536 CHN_UNLOCK(chn); 1537 } else { 1538 *arg_i = 0; 1539 ret = EINVAL; 1540 } 1541 break; 1542 1543 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1544 chn = wrch ? wrch : rdch; 1545 if (chn) { 1546 CHN_LOCK(chn); 1547 *arg_i = chn_getformats(chn); 1548 CHN_UNLOCK(chn); 1549 } else { 1550 *arg_i = 0; 1551 ret = EINVAL; 1552 } 1553 break; 1554 1555 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1556 if (*arg_i != AFMT_QUERY) { 1557 tmp = 0; 1558 PCM_ACQUIRE_QUICK(d); 1559 if (wrch) { 1560 CHN_LOCK(wrch); 1561 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1562 AFMT_CHANNEL(wrch->format), 1563 AFMT_EXTCHANNEL(wrch->format))); 1564 tmp = wrch->format; 1565 CHN_UNLOCK(wrch); 1566 } 1567 if (rdch && ret == 0) { 1568 CHN_LOCK(rdch); 1569 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1570 AFMT_CHANNEL(rdch->format), 1571 AFMT_EXTCHANNEL(rdch->format))); 1572 if (tmp == 0) 1573 tmp = rdch->format; 1574 CHN_UNLOCK(rdch); 1575 } 1576 PCM_RELEASE_QUICK(d); 1577 *arg_i = AFMT_ENCODING(tmp); 1578 } else { 1579 chn = wrch ? wrch : rdch; 1580 CHN_LOCK(chn); 1581 *arg_i = AFMT_ENCODING(chn->format); 1582 CHN_UNLOCK(chn); 1583 } 1584 break; 1585 1586 case SNDCTL_DSP_SETFRAGMENT: 1587 DEB(kprintf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1588 { 1589 uint32_t fragln = (*arg_i) & 0x0000ffff; 1590 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1591 uint32_t fragsz; 1592 uint32_t r_maxfrags, r_fragsz; 1593 1594 RANGE(fragln, 4, 16); 1595 fragsz = 1 << fragln; 1596 1597 if (maxfrags == 0) 1598 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1599 if (maxfrags < 2) 1600 maxfrags = 2; 1601 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1602 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1603 1604 DEB(kprintf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1605 PCM_ACQUIRE_QUICK(d); 1606 if (rdch) { 1607 CHN_LOCK(rdch); 1608 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1609 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1610 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1611 CHN_UNLOCK(rdch); 1612 } else { 1613 r_maxfrags = maxfrags; 1614 r_fragsz = fragsz; 1615 } 1616 if (wrch && ret == 0) { 1617 CHN_LOCK(wrch); 1618 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1619 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1620 fragsz = sndbuf_getblksz(wrch->bufsoft); 1621 CHN_UNLOCK(wrch); 1622 } else { /* use whatever came from the read channel */ 1623 maxfrags = r_maxfrags; 1624 fragsz = r_fragsz; 1625 } 1626 PCM_RELEASE_QUICK(d); 1627 1628 fragln = 0; 1629 while (fragsz > 1) { 1630 fragln++; 1631 fragsz >>= 1; 1632 } 1633 *arg_i = (maxfrags << 16) | fragln; 1634 } 1635 break; 1636 1637 case SNDCTL_DSP_GETISPACE: 1638 /* return the size of data available in the input queue */ 1639 { 1640 audio_buf_info *a = (audio_buf_info *)arg; 1641 if (rdch) { 1642 struct snd_dbuf *bs = rdch->bufsoft; 1643 1644 CHN_LOCK(rdch); 1645 a->bytes = sndbuf_getready(bs); 1646 a->fragments = a->bytes / sndbuf_getblksz(bs); 1647 a->fragstotal = sndbuf_getblkcnt(bs); 1648 a->fragsize = sndbuf_getblksz(bs); 1649 CHN_UNLOCK(rdch); 1650 } else 1651 ret = EINVAL; 1652 } 1653 break; 1654 1655 case SNDCTL_DSP_GETOSPACE: 1656 /* return space available in the output queue */ 1657 { 1658 audio_buf_info *a = (audio_buf_info *)arg; 1659 if (wrch) { 1660 struct snd_dbuf *bs = wrch->bufsoft; 1661 1662 CHN_LOCK(wrch); 1663 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1664 a->bytes = sndbuf_getfree(bs); 1665 a->fragments = a->bytes / sndbuf_getblksz(bs); 1666 a->fragstotal = sndbuf_getblkcnt(bs); 1667 a->fragsize = sndbuf_getblksz(bs); 1668 CHN_UNLOCK(wrch); 1669 } else 1670 ret = EINVAL; 1671 } 1672 break; 1673 1674 case SNDCTL_DSP_GETIPTR: 1675 { 1676 count_info *a = (count_info *)arg; 1677 if (rdch) { 1678 struct snd_dbuf *bs = rdch->bufsoft; 1679 1680 CHN_LOCK(rdch); 1681 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1682 a->bytes = sndbuf_gettotal(bs); 1683 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1684 a->ptr = sndbuf_getfreeptr(bs); 1685 rdch->blocks = sndbuf_getblocks(bs); 1686 CHN_UNLOCK(rdch); 1687 } else 1688 ret = EINVAL; 1689 } 1690 break; 1691 1692 case SNDCTL_DSP_GETOPTR: 1693 { 1694 count_info *a = (count_info *)arg; 1695 if (wrch) { 1696 struct snd_dbuf *bs = wrch->bufsoft; 1697 1698 CHN_LOCK(wrch); 1699 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1700 a->bytes = sndbuf_gettotal(bs); 1701 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1702 a->ptr = sndbuf_getreadyptr(bs); 1703 wrch->blocks = sndbuf_getblocks(bs); 1704 CHN_UNLOCK(wrch); 1705 } else 1706 ret = EINVAL; 1707 } 1708 break; 1709 1710 case SNDCTL_DSP_GETCAPS: 1711 PCM_LOCK(d); 1712 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1713 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1714 *arg_i |= PCM_CAP_DUPLEX; 1715 PCM_UNLOCK(d); 1716 break; 1717 1718 case SOUND_PCM_READ_BITS: 1719 chn = wrch ? wrch : rdch; 1720 if (chn) { 1721 CHN_LOCK(chn); 1722 if (chn->format & AFMT_8BIT) 1723 *arg_i = 8; 1724 else if (chn->format & AFMT_16BIT) 1725 *arg_i = 16; 1726 else if (chn->format & AFMT_24BIT) 1727 *arg_i = 24; 1728 else if (chn->format & AFMT_32BIT) 1729 *arg_i = 32; 1730 else 1731 ret = EINVAL; 1732 CHN_UNLOCK(chn); 1733 } else { 1734 *arg_i = 0; 1735 ret = EINVAL; 1736 } 1737 break; 1738 1739 case SNDCTL_DSP_SETTRIGGER: 1740 if (rdch) { 1741 CHN_LOCK(rdch); 1742 rdch->flags &= ~CHN_F_NOTRIGGER; 1743 if (*arg_i & PCM_ENABLE_INPUT) 1744 chn_start(rdch, 1); 1745 else { 1746 chn_abort(rdch); 1747 chn_resetbuf(rdch); 1748 rdch->flags |= CHN_F_NOTRIGGER; 1749 } 1750 CHN_UNLOCK(rdch); 1751 } 1752 if (wrch) { 1753 CHN_LOCK(wrch); 1754 wrch->flags &= ~CHN_F_NOTRIGGER; 1755 if (*arg_i & PCM_ENABLE_OUTPUT) 1756 chn_start(wrch, 1); 1757 else { 1758 chn_abort(wrch); 1759 chn_resetbuf(wrch); 1760 wrch->flags |= CHN_F_NOTRIGGER; 1761 } 1762 CHN_UNLOCK(wrch); 1763 } 1764 break; 1765 1766 case SNDCTL_DSP_GETTRIGGER: 1767 *arg_i = 0; 1768 if (wrch) { 1769 CHN_LOCK(wrch); 1770 if (wrch->flags & CHN_F_TRIGGERED) 1771 *arg_i |= PCM_ENABLE_OUTPUT; 1772 CHN_UNLOCK(wrch); 1773 } 1774 if (rdch) { 1775 CHN_LOCK(rdch); 1776 if (rdch->flags & CHN_F_TRIGGERED) 1777 *arg_i |= PCM_ENABLE_INPUT; 1778 CHN_UNLOCK(rdch); 1779 } 1780 break; 1781 1782 case SNDCTL_DSP_GETODELAY: 1783 if (wrch) { 1784 struct snd_dbuf *bs = wrch->bufsoft; 1785 1786 CHN_LOCK(wrch); 1787 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1788 *arg_i = sndbuf_getready(bs); 1789 CHN_UNLOCK(wrch); 1790 } else 1791 ret = EINVAL; 1792 break; 1793 1794 case SNDCTL_DSP_POST: 1795 if (wrch) { 1796 CHN_LOCK(wrch); 1797 wrch->flags &= ~CHN_F_NOTRIGGER; 1798 chn_start(wrch, 1); 1799 CHN_UNLOCK(wrch); 1800 } 1801 break; 1802 1803 case SNDCTL_DSP_SETDUPLEX: 1804 /* 1805 * switch to full-duplex mode if card is in half-duplex 1806 * mode and is able to work in full-duplex mode 1807 */ 1808 PCM_LOCK(d); 1809 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1810 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1811 PCM_UNLOCK(d); 1812 break; 1813 1814 /* 1815 * The following four ioctls are simple wrappers around mixer_ioctl 1816 * with no further processing. xcmd is short for "translated 1817 * command". 1818 */ 1819 case SNDCTL_DSP_GETRECVOL: 1820 if (xcmd == 0) { 1821 xcmd = SOUND_MIXER_READ_RECLEV; 1822 chn = rdch; 1823 } 1824 /* FALLTHROUGH */ 1825 case SNDCTL_DSP_SETRECVOL: 1826 if (xcmd == 0) { 1827 xcmd = SOUND_MIXER_WRITE_RECLEV; 1828 chn = rdch; 1829 } 1830 /* FALLTHROUGH */ 1831 case SNDCTL_DSP_GETPLAYVOL: 1832 if (xcmd == 0) { 1833 xcmd = SOUND_MIXER_READ_PCM; 1834 chn = wrch; 1835 } 1836 /* FALLTHROUGH */ 1837 case SNDCTL_DSP_SETPLAYVOL: 1838 if (xcmd == 0) { 1839 xcmd = SOUND_MIXER_WRITE_PCM; 1840 chn = wrch; 1841 } 1842 1843 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1844 if (ret != -1) { 1845 PCM_GIANT_EXIT(d); 1846 return (ret); 1847 } 1848 1849 if (d->mixer_dev != NULL) { 1850 PCM_ACQUIRE_QUICK(d); 1851 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, 1852 MIXER_CMD_DIRECT); 1853 PCM_RELEASE_QUICK(d); 1854 } else 1855 ret = ENOTSUP; 1856 1857 break; 1858 1859 case SNDCTL_DSP_GET_RECSRC_NAMES: 1860 case SNDCTL_DSP_GET_RECSRC: 1861 case SNDCTL_DSP_SET_RECSRC: 1862 if (d->mixer_dev != NULL) { 1863 PCM_ACQUIRE_QUICK(d); 1864 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, 1865 MIXER_CMD_DIRECT); 1866 PCM_RELEASE_QUICK(d); 1867 } else 1868 ret = ENOTSUP; 1869 break; 1870 1871 /* 1872 * The following 3 ioctls aren't very useful at the moment. For 1873 * now, only a single channel is associated with a cdev (/dev/dspN 1874 * instance), so there's only a single output routing to use (i.e., 1875 * the wrch bound to this cdev). 1876 */ 1877 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1878 { 1879 oss_mixer_enuminfo *ei; 1880 ei = (oss_mixer_enuminfo *)arg; 1881 ei->dev = 0; 1882 ei->ctrl = 0; 1883 ei->version = 0; /* static for now */ 1884 ei->strindex[0] = 0; 1885 1886 if (wrch != NULL) { 1887 ei->nvalues = 1; 1888 strlcpy(ei->strings, wrch->name, 1889 sizeof(ei->strings)); 1890 } else { 1891 ei->nvalues = 0; 1892 ei->strings[0] = '\0'; 1893 } 1894 } 1895 break; 1896 case SNDCTL_DSP_GET_PLAYTGT: 1897 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1898 /* 1899 * Re: SET_PLAYTGT 1900 * OSSv4: "The value that was accepted by the device will 1901 * be returned back in the variable pointed by the 1902 * argument." 1903 */ 1904 if (wrch != NULL) 1905 *arg_i = 0; 1906 else 1907 ret = EINVAL; 1908 break; 1909 1910 case SNDCTL_DSP_SILENCE: 1911 /* 1912 * Flush the software (pre-feed) buffer, but try to minimize playback 1913 * interruption. (I.e., record unplayed samples with intent to 1914 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1915 * functionality. 1916 */ 1917 if (wrch == NULL) 1918 ret = EINVAL; 1919 else { 1920 struct snd_dbuf *bs; 1921 CHN_LOCK(wrch); 1922 while (wrch->inprog != 0) 1923 cv_wait(&wrch->cv, wrch->lock); 1924 bs = wrch->bufsoft; 1925 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1926 bs->sl = sndbuf_getready(bs); 1927 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1928 sndbuf_fillsilence(bs); 1929 chn_start(wrch, 0); 1930 } 1931 CHN_UNLOCK(wrch); 1932 } 1933 break; 1934 1935 case SNDCTL_DSP_SKIP: 1936 /* 1937 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1938 * playback buffer by moving the current write position immediately 1939 * before the point where the device is currently reading the samples." 1940 */ 1941 if (wrch == NULL) 1942 ret = EINVAL; 1943 else { 1944 struct snd_dbuf *bs; 1945 CHN_LOCK(wrch); 1946 while (wrch->inprog != 0) 1947 cv_wait(&wrch->cv, wrch->lock); 1948 bs = wrch->bufsoft; 1949 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1950 sndbuf_softreset(bs); 1951 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1952 bs->sl = 0; 1953 chn_start(wrch, 0); 1954 } 1955 CHN_UNLOCK(wrch); 1956 } 1957 break; 1958 1959 case SNDCTL_DSP_CURRENT_OPTR: 1960 case SNDCTL_DSP_CURRENT_IPTR: 1961 /** 1962 * @note Changing formats resets the buffer counters, which differs 1963 * from the 4Front drivers. However, I don't expect this to be 1964 * much of a problem. 1965 * 1966 * @note In a test where @c CURRENT_OPTR is called immediately after write 1967 * returns, this driver is about 32K samples behind whereas 1968 * 4Front's is about 8K samples behind. Should determine source 1969 * of discrepancy, even if only out of curiosity. 1970 * 1971 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1972 */ 1973 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1974 if (chn == NULL) 1975 ret = EINVAL; 1976 else { 1977 struct snd_dbuf *bs; 1978 /* int tmp; */ 1979 1980 oss_count_t *oc = (oss_count_t *)arg; 1981 1982 CHN_LOCK(chn); 1983 bs = chn->bufsoft; 1984 #if 0 1985 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 1986 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 1987 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 1988 #else 1989 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 1990 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 1991 #endif 1992 CHN_UNLOCK(chn); 1993 } 1994 break; 1995 1996 case SNDCTL_DSP_HALT_OUTPUT: 1997 case SNDCTL_DSP_HALT_INPUT: 1998 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 1999 if (chn == NULL) 2000 ret = EINVAL; 2001 else { 2002 CHN_LOCK(chn); 2003 chn_abort(chn); 2004 CHN_UNLOCK(chn); 2005 } 2006 break; 2007 2008 case SNDCTL_DSP_LOW_WATER: 2009 /* 2010 * Set the number of bytes required to attract attention by 2011 * select/poll. 2012 */ 2013 if (wrch != NULL) { 2014 CHN_LOCK(wrch); 2015 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 2016 CHN_UNLOCK(wrch); 2017 } 2018 if (rdch != NULL) { 2019 CHN_LOCK(rdch); 2020 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2021 CHN_UNLOCK(rdch); 2022 } 2023 break; 2024 2025 case SNDCTL_DSP_GETERROR: 2026 /* 2027 * OSSv4 docs: "All errors and counters will automatically be 2028 * cleared to zeroes after the call so each call will return only 2029 * the errors that occurred after the previous invocation. ... The 2030 * play_underruns and rec_overrun fields are the only useful fields 2031 * returned by OSS 4.0." 2032 */ 2033 { 2034 audio_errinfo *ei = (audio_errinfo *)arg; 2035 2036 bzero((void *)ei, sizeof(*ei)); 2037 2038 if (wrch != NULL) { 2039 CHN_LOCK(wrch); 2040 ei->play_underruns = wrch->xruns; 2041 wrch->xruns = 0; 2042 CHN_UNLOCK(wrch); 2043 } 2044 if (rdch != NULL) { 2045 CHN_LOCK(rdch); 2046 ei->rec_overruns = rdch->xruns; 2047 rdch->xruns = 0; 2048 CHN_UNLOCK(rdch); 2049 } 2050 } 2051 break; 2052 2053 case SNDCTL_DSP_SYNCGROUP: 2054 PCM_ACQUIRE_QUICK(d); 2055 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2056 PCM_RELEASE_QUICK(d); 2057 break; 2058 2059 case SNDCTL_DSP_SYNCSTART: 2060 PCM_ACQUIRE_QUICK(d); 2061 ret = dsp_oss_syncstart(*arg_i); 2062 PCM_RELEASE_QUICK(d); 2063 break; 2064 2065 case SNDCTL_DSP_POLICY: 2066 PCM_ACQUIRE_QUICK(d); 2067 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2068 PCM_RELEASE_QUICK(d); 2069 break; 2070 2071 case SNDCTL_DSP_COOKEDMODE: 2072 PCM_ACQUIRE_QUICK(d); 2073 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2074 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2075 PCM_RELEASE_QUICK(d); 2076 break; 2077 case SNDCTL_DSP_GET_CHNORDER: 2078 PCM_ACQUIRE_QUICK(d); 2079 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2080 PCM_RELEASE_QUICK(d); 2081 break; 2082 case SNDCTL_DSP_SET_CHNORDER: 2083 PCM_ACQUIRE_QUICK(d); 2084 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2085 PCM_RELEASE_QUICK(d); 2086 break; 2087 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2088 PCM_ACQUIRE_QUICK(d); 2089 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2090 PCM_RELEASE_QUICK(d); 2091 break; 2092 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2093 ret = EINVAL; 2094 break; 2095 #ifdef OSSV4_EXPERIMENT 2096 /* 2097 * XXX The following ioctls are not yet supported and just return 2098 * EINVAL. 2099 */ 2100 case SNDCTL_DSP_GETOPEAKS: 2101 case SNDCTL_DSP_GETIPEAKS: 2102 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2103 if (chn == NULL) 2104 ret = EINVAL; 2105 else { 2106 oss_peaks_t *op = (oss_peaks_t *)arg; 2107 int lpeak, rpeak; 2108 2109 CHN_LOCK(chn); 2110 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2111 if (ret == -1) 2112 ret = EINVAL; 2113 else { 2114 (*op)[0] = lpeak; 2115 (*op)[1] = rpeak; 2116 } 2117 CHN_UNLOCK(chn); 2118 } 2119 break; 2120 2121 /* 2122 * XXX Once implemented, revisit this for proper cv protection 2123 * (if necessary). 2124 */ 2125 case SNDCTL_GETLABEL: 2126 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2127 break; 2128 case SNDCTL_SETLABEL: 2129 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2130 break; 2131 case SNDCTL_GETSONG: 2132 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2133 break; 2134 case SNDCTL_SETSONG: 2135 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2136 break; 2137 case SNDCTL_SETNAME: 2138 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2139 break; 2140 #if 0 2141 /** 2142 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2143 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2144 * 4Front Technologies. 2145 */ 2146 case SNDCTL_DSP_READCTL: 2147 case SNDCTL_DSP_WRITECTL: 2148 ret = EINVAL; 2149 break; 2150 #endif /* !0 (explicitly omitted ioctls) */ 2151 2152 #endif /* !OSSV4_EXPERIMENT */ 2153 case SNDCTL_DSP_MAPINBUF: 2154 case SNDCTL_DSP_MAPOUTBUF: 2155 case SNDCTL_DSP_SETSYNCRO: 2156 /* undocumented */ 2157 2158 case SNDCTL_DSP_SUBDIVIDE: 2159 case SOUND_PCM_WRITE_FILTER: 2160 case SOUND_PCM_READ_FILTER: 2161 /* dunno what these do, don't sound important */ 2162 2163 default: 2164 DEB(kprintf("default ioctl fn 0x%08lx fail\n", cmd)); 2165 ret = EINVAL; 2166 break; 2167 } 2168 2169 PCM_GIANT_LEAVE(d); 2170 2171 return (ret); 2172 } 2173 2174 static struct filterops dsp_read_filtops = 2175 { FILTEROP_ISFD, NULL, dsp_filter_detach, dsp_filter_read }; 2176 static struct filterops dsp_write_filtops = 2177 { FILTEROP_ISFD, NULL, dsp_filter_detach, dsp_filter_write }; 2178 2179 static int 2180 /*dsp_poll(struct cdev *i_dev, int events, struct thread *td)*/ 2181 dsp_kqfilter(struct dev_kqfilter_args *ap) 2182 { 2183 struct knote *kn = ap->a_kn; 2184 struct klist *klist; 2185 struct cdev *i_dev = ap->a_head.a_dev; 2186 struct snddev_info *d; 2187 struct pcm_channel *wrch, *rdch; 2188 struct snd_dbuf *bs = NULL; 2189 int ret; 2190 2191 d = dsp_get_info(i_dev); 2192 if (!DSP_REGISTERED(d, i_dev)) 2193 return (EBADF); 2194 2195 PCM_GIANT_ENTER(d); 2196 2197 wrch = NULL; 2198 rdch = NULL; 2199 ret = 0; 2200 2201 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2202 2203 switch (kn->kn_filter) { 2204 case EVFILT_READ: 2205 if (rdch) { 2206 kn->kn_fop = &dsp_read_filtops; 2207 kn->kn_hook = (caddr_t)rdch; 2208 bs = rdch->bufsoft; 2209 ap->a_result = 0; 2210 } 2211 break; 2212 case EVFILT_WRITE: 2213 if (wrch) { 2214 kn->kn_fop = &dsp_write_filtops; 2215 kn->kn_hook = (caddr_t)wrch; 2216 bs = wrch->bufsoft; 2217 ap->a_result = 0; 2218 } 2219 break; 2220 default: 2221 ap->a_result = EOPNOTSUPP; 2222 break; 2223 } 2224 2225 if (ap->a_result == 0) { 2226 klist = &sndbuf_getkq(bs)->ki_note; 2227 knote_insert(klist, kn); 2228 } 2229 2230 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2231 2232 PCM_GIANT_LEAVE(d); 2233 2234 return (ret); 2235 } 2236 2237 static void 2238 dsp_filter_detach(struct knote *kn) 2239 { 2240 struct pcm_channel *ch = (struct pcm_channel *)kn->kn_hook; 2241 struct snd_dbuf *bs = ch->bufsoft; 2242 struct klist *klist; 2243 2244 CHN_LOCK(ch); 2245 klist = &sndbuf_getkq(bs)->ki_note; 2246 knote_remove(klist, kn); 2247 CHN_UNLOCK(ch); 2248 } 2249 2250 static int 2251 dsp_filter_read(struct knote *kn, long hint) 2252 { 2253 struct pcm_channel *rdch = (struct pcm_channel *)kn->kn_hook; 2254 struct thread *td = curthread; 2255 int ready; 2256 2257 CHN_LOCK(rdch); 2258 ready = chn_poll(rdch, 1, td); 2259 CHN_UNLOCK(rdch); 2260 2261 return (ready); 2262 } 2263 2264 static int 2265 dsp_filter_write(struct knote *kn, long hint) 2266 { 2267 struct pcm_channel *wrch = (struct pcm_channel *)kn->kn_hook; 2268 struct thread *td = curthread; 2269 int ready; 2270 2271 CHN_LOCK(wrch); 2272 ready = chn_poll(wrch, 1, td); 2273 CHN_UNLOCK(wrch); 2274 2275 return (ready); 2276 } 2277 2278 static int 2279 dsp_mmap(struct dev_mmap_args *ap) 2280 { 2281 vm_offset_t offset = ap->a_offset; 2282 2283 /* XXX memattr is not honored */ 2284 ap->a_result = vtophys(offset); 2285 return (0); 2286 } 2287 2288 static int 2289 dsp_mmap_single(struct dev_mmap_single_args *ap) 2290 { 2291 struct cdev *i_dev = ap->a_head.a_dev; 2292 vm_ooffset_t *offset = ap->a_offset; 2293 vm_size_t size = ap->a_size; 2294 struct vm_object **object = ap->a_object; 2295 int nprot = ap->a_nprot; 2296 struct snddev_info *d; 2297 struct pcm_channel *wrch, *rdch, *c; 2298 2299 /* 2300 * Reject PROT_EXEC by default. It just doesn't makes sense. 2301 * Unfortunately, we have to give up this one due to linux_mmap 2302 * changes. 2303 * 2304 * http://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2305 * 2306 */ 2307 #ifdef SV_ABI_LINUX 2308 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2309 (dsp_mmap_allow_prot_exec == 0 && 2310 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2311 #else 2312 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2313 #endif 2314 return (EINVAL); 2315 2316 /* 2317 * PROT_READ (alone) selects the input buffer. 2318 * PROT_WRITE (alone) selects the output buffer. 2319 * PROT_WRITE|PROT_READ together select the output buffer. 2320 */ 2321 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2322 return (EINVAL); 2323 2324 d = dsp_get_info(i_dev); 2325 if (!DSP_REGISTERED(d, i_dev)) 2326 return (EINVAL); 2327 2328 PCM_GIANT_ENTER(d); 2329 2330 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2331 2332 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2333 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2334 (*offset + size) > sndbuf_getsize(c->bufsoft) || 2335 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2336 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2337 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2338 PCM_GIANT_EXIT(d); 2339 return (EINVAL); 2340 } 2341 2342 if (wrch != NULL) 2343 wrch->flags |= CHN_F_MMAP; 2344 if (rdch != NULL) 2345 rdch->flags |= CHN_F_MMAP; 2346 2347 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2348 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2349 *object = dev_pager_alloc(i_dev, size, nprot, *offset); 2350 2351 PCM_GIANT_LEAVE(d); 2352 2353 if (*object == NULL) 2354 return (EINVAL); 2355 return (0); 2356 } 2357 2358 /* 2359 * for i = 0 to channels of device N 2360 * if dspN.i isn't busy and in the right dir, create a dev_t and return it 2361 */ 2362 int 2363 dsp_clone(struct dev_clone_args *ap) 2364 { 2365 struct cdev *i_dev = ap->a_head.a_dev; 2366 struct snddev_info *d; 2367 struct snd_clone_entry *ce; 2368 struct pcm_channel *c; 2369 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2370 size_t len; 2371 char sname[64]; 2372 int err = EBUSY; 2373 static struct cdev *dev = NULL; 2374 2375 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2376 2377 /* 2378 * The default dsp device has a special unit which must be adjusted, 2379 * otherwise the unit number is already correct. 2380 */ 2381 unit = PCMUNIT(i_dev); 2382 if (unit == PCMUNIT_DEFAULT) 2383 unit = snd_unit; 2384 2385 ksnprintf(sname, sizeof(sname), "%s", ap->a_name); 2386 len = strlen(sname); 2387 while (len && sname[len-1] >= '0' && sname[len-1] <= '9') 2388 --len; 2389 sname[len] = 0; 2390 2391 cunit = -1; 2392 devtype = -1; 2393 devhw = 0; 2394 devcmax = -1; 2395 tumax = -1; 2396 2397 for (i = 0; i < sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0]); ++i) { 2398 if (strcmp(dsp_cdevs[i].name, sname) != 0) 2399 continue; 2400 devtype = dsp_cdevs[i].type; 2401 devhw = dsp_cdevs[i].hw; 2402 devcmax = dsp_cdevs[i].max - 1; 2403 break; 2404 } 2405 2406 d = devclass_get_softc(pcm_devclass, unit); 2407 if (!PCM_REGISTERED(d) || d->clones == NULL) { 2408 return (ENODEV); 2409 } 2410 2411 /* XXX Need Giant magic entry ??? */ 2412 2413 PCM_LOCK(d); 2414 if (snd_clone_disabled(d->clones)) { 2415 PCM_UNLOCK(d); 2416 return (ENODEV); 2417 } 2418 2419 PCM_WAIT(d); 2420 PCM_ACQUIRE(d); 2421 PCM_UNLOCK(d); 2422 2423 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2424 2425 if (devhw != 0) { 2426 KASSERT(devcmax <= dsp_cmax, 2427 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2428 if (cunit > devcmax) { 2429 PCM_RELEASE_QUICK(d); 2430 return (ENODEV); 2431 } 2432 udcmask |= snd_c2unit(cunit); 2433 CHN_FOREACH(c, d, channels.pcm) { 2434 CHN_LOCK(c); 2435 if (c->unit != udcmask) { 2436 CHN_UNLOCK(c); 2437 continue; 2438 } 2439 CHN_UNLOCK(c); 2440 udcmask &= ~snd_c2unit(cunit); 2441 /* 2442 * Temporarily increase clone maxunit to overcome 2443 * vchan flexibility. 2444 * 2445 * # sysctl dev.pcm.0.play.vchans=256 2446 * dev.pcm.0.play.vchans: 1 -> 256 2447 * # cat /dev/zero > /dev/dsp0.vp255 & 2448 * [1] 17296 2449 * # sysctl dev.pcm.0.play.vchans=0 2450 * dev.pcm.0.play.vchans: 256 -> 1 2451 * # fg 2452 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2453 * ^C 2454 * # cat /dev/zero > /dev/dsp0.vp255 2455 * zsh: operation not supported: /dev/dsp0.vp255 2456 */ 2457 tumax = snd_clone_getmaxunit(d->clones); 2458 if (cunit > tumax) 2459 snd_clone_setmaxunit(d->clones, cunit); 2460 else 2461 tumax = -1; 2462 goto dsp_clone_alloc; 2463 } 2464 /* 2465 * Ok, so we're requesting unallocated vchan, but still 2466 * within maximum vchan limit. 2467 */ 2468 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2469 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2470 cunit < snd_maxautovchans) { 2471 udcmask &= ~snd_c2unit(cunit); 2472 tumax = snd_clone_getmaxunit(d->clones); 2473 if (cunit > tumax) 2474 snd_clone_setmaxunit(d->clones, cunit); 2475 else 2476 tumax = -1; 2477 goto dsp_clone_alloc; 2478 } 2479 PCM_RELEASE_QUICK(d); 2480 return (err); 2481 } 2482 2483 /* 2484 * Allocate channel, create device if necessary. 2485 */ 2486 dsp_clone_alloc: 2487 ce = snd_clone_alloc(d->clones, &dev, &cunit, udcmask); 2488 if (tumax != -1) 2489 snd_clone_setmaxunit(d->clones, tumax); 2490 if (ce != NULL) { 2491 /* 2492 * NOTE: Subunit is a unique number unrelated to the 2493 * channel id. 2494 */ 2495 udcmask |= snd_c2unit(cunit); 2496 int subunit = devfs_clone_bitmap_get(&DEVFS_CLONE_BITMAP(dsp), 0); 2497 2498 dev = make_only_dev(&dsp_ops, 2499 PCMMKMINOR(unit, devtype, subunit), 2500 UID_ROOT, GID_WHEEL, 0666, "%s%d.%d", 2501 sname, unit, subunit); 2502 snd_clone_register(ce, dev); 2503 err = 0; 2504 } else { 2505 /* 2506 * Use device already registered, we must add a ref to the 2507 * device. 2508 */ 2509 err = 0; 2510 } 2511 2512 ap->a_dev = dev; 2513 2514 PCM_RELEASE_QUICK(d); 2515 2516 return (err); 2517 } 2518 2519 static void 2520 dsp_sysinit(void *p) 2521 { 2522 if (dsp_ehtag != NULL) 2523 return; 2524 /* initialize unit numbering */ 2525 snd_unit_init(); 2526 dsp_umax = PCMMAXUNIT; 2527 dsp_cmax = PCMMAXCHAN; 2528 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2529 2530 devfs_clone_bitmap_init(&DEVFS_CLONE_BITMAP(dsp)); 2531 } 2532 2533 static void 2534 dsp_sysuninit(void *p) 2535 { 2536 if (dsp_ehtag == NULL) 2537 return; 2538 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2539 dsp_ehtag = NULL; 2540 } 2541 2542 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2543 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2544 2545 char * 2546 dsp_unit2name(char *buf, size_t len, int unit) 2547 { 2548 int i, dtype; 2549 2550 KASSERT(buf != NULL && len != 0, 2551 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2552 2553 dtype = snd_unit2d(unit); 2554 2555 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2556 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2557 continue; 2558 ksnprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2559 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2560 return (buf); 2561 } 2562 2563 return (NULL); 2564 } 2565 2566 /** 2567 * @brief Handler for SNDCTL_AUDIOINFO. 2568 * 2569 * Gathers information about the audio device specified in ai->dev. If 2570 * ai->dev == -1, then this function gathers information about the current 2571 * device. If the call comes in on a non-audio device and ai->dev == -1, 2572 * return EINVAL. 2573 * 2574 * This routine is supposed to go practically straight to the hardware, 2575 * getting capabilities directly from the sound card driver, side-stepping 2576 * the intermediate channel interface. 2577 * 2578 * Note, however, that the usefulness of this command is significantly 2579 * decreased when requesting info about any device other than the one serving 2580 * the request. While each snddev_channel refers to a specific device node, 2581 * the converse is *not* true. Currently, when a sound device node is opened, 2582 * the sound subsystem scans for an available audio channel (or channels, if 2583 * opened in read+write) and then assigns them to the si_drv[12] private 2584 * data fields. As a result, any information returned linking a channel to 2585 * a specific character device isn't necessarily accurate. 2586 * 2587 * @note 2588 * Calling threads must not hold any snddev_info or pcm_channel locks. 2589 * 2590 * @param dev device on which the ioctl was issued 2591 * @param ai ioctl request data container 2592 * 2593 * @retval 0 success 2594 * @retval EINVAL ai->dev specifies an invalid device 2595 * 2596 * @todo Verify correctness of Doxygen tags. ;) 2597 */ 2598 int 2599 dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2600 { 2601 struct pcmchan_caps *caps; 2602 struct pcm_channel *ch; 2603 struct snddev_info *d; 2604 uint32_t fmts; 2605 int i, nchan, *rates, minch, maxch; 2606 char *devname, buf[CHN_NAMELEN]; 2607 2608 /* 2609 * If probing the device that received the ioctl, make sure it's a 2610 * DSP device. (Users may use this ioctl with /dev/mixer and 2611 * /dev/midi.) 2612 */ 2613 if (ai->dev == -1 && i_dev->si_ops != &dsp_ops) 2614 return (EINVAL); 2615 2616 ch = NULL; 2617 devname = NULL; 2618 nchan = 0; 2619 bzero(buf, sizeof(buf)); 2620 2621 /* 2622 * Search for the requested audio device (channel). Start by 2623 * iterating over pcm devices. 2624 */ 2625 for (i = 0; pcm_devclass != NULL && 2626 i < devclass_get_maxunit(pcm_devclass); i++) { 2627 d = devclass_get_softc(pcm_devclass, i); 2628 if (!PCM_REGISTERED(d)) 2629 continue; 2630 2631 /* XXX Need Giant magic entry ??? */ 2632 2633 /* See the note in function docblock */ 2634 PCM_UNLOCKASSERT(d); 2635 PCM_LOCK(d); 2636 2637 CHN_FOREACH(ch, d, channels.pcm) { 2638 CHN_UNLOCKASSERT(ch); 2639 CHN_LOCK(ch); 2640 if (ai->dev == -1) { 2641 if (DSP_REGISTERED(d, i_dev) && 2642 (ch == PCM_RDCH(i_dev) || /* record ch */ 2643 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2644 devname = dsp_unit2name(buf, 2645 sizeof(buf), ch->unit); 2646 } 2647 } else if (ai->dev == nchan) { 2648 devname = dsp_unit2name(buf, sizeof(buf), 2649 ch->unit); 2650 } 2651 if (devname != NULL) 2652 break; 2653 CHN_UNLOCK(ch); 2654 ++nchan; 2655 } 2656 2657 if (devname != NULL) { 2658 /* 2659 * At this point, the following synchronization stuff 2660 * has happened: 2661 * - a specific PCM device is locked. 2662 * - a specific audio channel has been locked, so be 2663 * sure to unlock when exiting; 2664 */ 2665 2666 caps = chn_getcaps(ch); 2667 2668 /* 2669 * With all handles collected, zero out the user's 2670 * container and begin filling in its fields. 2671 */ 2672 bzero((void *)ai, sizeof(oss_audioinfo)); 2673 2674 ai->dev = nchan; 2675 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2676 2677 if ((ch->flags & CHN_F_BUSY) == 0) 2678 ai->busy = 0; 2679 else 2680 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2681 2682 /** 2683 * @note 2684 * @c cmd - OSSv4 docs: "Only supported under Linux at 2685 * this moment." Cop-out, I know, but I'll save 2686 * running around in the process table for later. 2687 * Is there a risk of leaking information? 2688 */ 2689 ai->pid = ch->pid; 2690 2691 /* 2692 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2693 * Note, however, that a single channel operates in 2694 * only one direction, so PCM_CAP_DUPLEX is out. 2695 */ 2696 /** 2697 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2698 * these in pcmchan::caps? 2699 */ 2700 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2701 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2702 2703 /* 2704 * Collect formats supported @b natively by the 2705 * device. Also determine min/max channels. (I.e., 2706 * mono, stereo, or both?) 2707 * 2708 * If any channel is stereo, maxch = 2; 2709 * if all channels are stereo, minch = 2, too; 2710 * if any channel is mono, minch = 1; 2711 * and if all channels are mono, maxch = 1. 2712 */ 2713 minch = 0; 2714 maxch = 0; 2715 fmts = 0; 2716 for (i = 0; caps->fmtlist[i]; i++) { 2717 fmts |= caps->fmtlist[i]; 2718 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2719 minch = (minch == 0) ? 2 : minch; 2720 maxch = 2; 2721 } else { 2722 minch = 1; 2723 maxch = (maxch == 0) ? 1 : maxch; 2724 } 2725 } 2726 2727 if (ch->direction == PCMDIR_PLAY) 2728 ai->oformats = fmts; 2729 else 2730 ai->iformats = fmts; 2731 2732 /** 2733 * @note 2734 * @c magic - OSSv4 docs: "Reserved for internal use 2735 * by OSS." 2736 * 2737 * @par 2738 * @c card_number - OSSv4 docs: "Number of the sound 2739 * card where this device belongs or -1 if this 2740 * information is not available. Applications 2741 * should normally not use this field for any 2742 * purpose." 2743 */ 2744 ai->card_number = -1; 2745 /** 2746 * @todo @c song_name - depends first on 2747 * SNDCTL_[GS]ETSONG @todo @c label - depends 2748 * on SNDCTL_[GS]ETLABEL 2749 * @todo @c port_number - routing information? 2750 */ 2751 ai->port_number = -1; 2752 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2753 /** 2754 * @note 2755 * @c real_device - OSSv4 docs: "Obsolete." 2756 */ 2757 ai->real_device = -1; 2758 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2759 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2760 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2761 /** 2762 * @note 2763 * @c flags - OSSv4 docs: "Reserved for future use." 2764 * 2765 * @note 2766 * @c binding - OSSv4 docs: "Reserved for future use." 2767 * 2768 * @todo @c handle - haven't decided how to generate 2769 * this yet; bus, vendor, device IDs? 2770 */ 2771 ai->min_rate = caps->minspeed; 2772 ai->max_rate = caps->maxspeed; 2773 2774 ai->min_channels = minch; 2775 ai->max_channels = maxch; 2776 2777 ai->nrates = chn_getrates(ch, &rates); 2778 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2779 ai->nrates = OSS_MAX_SAMPLE_RATES; 2780 2781 for (i = 0; i < ai->nrates; i++) 2782 ai->rates[i] = rates[i]; 2783 2784 ai->next_play_engine = 0; 2785 ai->next_rec_engine = 0; 2786 2787 CHN_UNLOCK(ch); 2788 } 2789 2790 PCM_UNLOCK(d); 2791 2792 if (devname != NULL) 2793 return (0); 2794 } 2795 2796 /* Exhausted the search -- nothing is locked, so return. */ 2797 return (EINVAL); 2798 } 2799 2800 /** 2801 * @brief Assigns a PCM channel to a sync group. 2802 * 2803 * Sync groups are used to enable audio operations on multiple devices 2804 * simultaneously. They may be used with any number of devices and may 2805 * span across applications. Devices are added to groups with 2806 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2807 * SNDCTL_DSP_SYNCSTART ioctl. 2808 * 2809 * If the @c id field of the @c group parameter is set to zero, then a new 2810 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2811 * the group specified. 2812 * 2813 * @todo As far as memory allocation, should we assume that things are 2814 * okay and allocate with M_WAITOK before acquiring channel locks, 2815 * freeing later if not? 2816 * 2817 * @param wrch output channel associated w/ device (if any) 2818 * @param rdch input channel associated w/ device (if any) 2819 * @param group Sync group parameters 2820 * 2821 * @retval 0 success 2822 * @retval non-zero error to be propagated upstream 2823 */ 2824 static int 2825 dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2826 { 2827 struct pcmchan_syncmember *smrd, *smwr; 2828 struct pcmchan_syncgroup *sg; 2829 int ret, sg_ids[3]; 2830 2831 smrd = NULL; 2832 smwr = NULL; 2833 sg = NULL; 2834 ret = 0; 2835 2836 /* 2837 * Free_unr() may sleep, so store released syncgroup IDs until after 2838 * all locks are released. 2839 */ 2840 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2841 2842 PCM_SG_LOCK(); 2843 2844 /* 2845 * - Insert channel(s) into group's member list. 2846 * - Set CHN_F_NOTRIGGER on channel(s). 2847 * - Stop channel(s). 2848 */ 2849 2850 /* 2851 * If device's channels are already mapped to a group, unmap them. 2852 */ 2853 if (wrch) { 2854 CHN_LOCK(wrch); 2855 sg_ids[0] = chn_syncdestroy(wrch); 2856 } 2857 2858 if (rdch) { 2859 CHN_LOCK(rdch); 2860 sg_ids[1] = chn_syncdestroy(rdch); 2861 } 2862 2863 /* 2864 * Verify that mode matches character device properites. 2865 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2866 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2867 */ 2868 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2869 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2870 ret = EINVAL; 2871 goto out; 2872 } 2873 2874 /* 2875 * An id of zero indicates the user wants to create a new 2876 * syncgroup. 2877 */ 2878 if (group->id == 0) { 2879 sg = (struct pcmchan_syncgroup *)kmalloc(sizeof(*sg), M_DEVBUF, M_WAITOK | M_ZERO); 2880 if (sg != NULL) { 2881 SLIST_INIT(&sg->members); 2882 sg->id = alloc_unr(pcmsg_unrhdr); 2883 2884 group->id = sg->id; 2885 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2886 } else 2887 ret = ENOMEM; 2888 } else { 2889 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2890 if (sg->id == group->id) 2891 break; 2892 } 2893 if (sg == NULL) 2894 ret = EINVAL; 2895 } 2896 2897 /* Couldn't create or find a syncgroup. Fail. */ 2898 if (sg == NULL) 2899 goto out; 2900 2901 /* 2902 * Allocate a syncmember, assign it and a channel together, and 2903 * insert into syncgroup. 2904 */ 2905 if (group->mode & PCM_ENABLE_INPUT) { 2906 smrd = (struct pcmchan_syncmember *)kmalloc(sizeof(*smrd), M_DEVBUF, M_WAITOK | M_ZERO); 2907 if (smrd == NULL) { 2908 ret = ENOMEM; 2909 goto out; 2910 } 2911 2912 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2913 smrd->parent = sg; 2914 smrd->ch = rdch; 2915 2916 chn_abort(rdch); 2917 rdch->flags |= CHN_F_NOTRIGGER; 2918 rdch->sm = smrd; 2919 } 2920 2921 if (group->mode & PCM_ENABLE_OUTPUT) { 2922 smwr = (struct pcmchan_syncmember *)kmalloc(sizeof(*smwr), M_DEVBUF, M_WAITOK | M_ZERO); 2923 if (smwr == NULL) { 2924 ret = ENOMEM; 2925 goto out; 2926 } 2927 2928 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2929 smwr->parent = sg; 2930 smwr->ch = wrch; 2931 2932 chn_abort(wrch); 2933 wrch->flags |= CHN_F_NOTRIGGER; 2934 wrch->sm = smwr; 2935 } 2936 2937 2938 out: 2939 if (ret != 0) { 2940 if (smrd != NULL) 2941 kfree(smrd, M_DEVBUF); 2942 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2943 sg_ids[2] = sg->id; 2944 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2945 kfree(sg, M_DEVBUF); 2946 } 2947 2948 if (wrch) 2949 wrch->sm = NULL; 2950 if (rdch) 2951 rdch->sm = NULL; 2952 } 2953 2954 if (wrch) 2955 CHN_UNLOCK(wrch); 2956 if (rdch) 2957 CHN_UNLOCK(rdch); 2958 2959 PCM_SG_UNLOCK(); 2960 2961 if (sg_ids[0]) 2962 free_unr(pcmsg_unrhdr, sg_ids[0]); 2963 if (sg_ids[1]) 2964 free_unr(pcmsg_unrhdr, sg_ids[1]); 2965 if (sg_ids[2]) 2966 free_unr(pcmsg_unrhdr, sg_ids[2]); 2967 2968 return (ret); 2969 } 2970 2971 /** 2972 * @brief Launch a sync group into action 2973 * 2974 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2975 * iterates over all members, triggering them along the way. 2976 * 2977 * @note Caller must not hold any channel locks. 2978 * 2979 * @param sg_id sync group identifier 2980 * 2981 * @retval 0 success 2982 * @retval non-zero error worthy of propagating upstream to user 2983 */ 2984 static int 2985 dsp_oss_syncstart(int sg_id) 2986 { 2987 struct pcmchan_syncmember *sm, *sm_tmp; 2988 struct pcmchan_syncgroup *sg; 2989 struct pcm_channel *c; 2990 int ret, needlocks; 2991 2992 /* Get the synclists lock */ 2993 PCM_SG_LOCK(); 2994 2995 do { 2996 ret = 0; 2997 needlocks = 0; 2998 2999 /* Search for syncgroup by ID */ 3000 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 3001 if (sg->id == sg_id) 3002 break; 3003 } 3004 3005 /* Return EINVAL if not found */ 3006 if (sg == NULL) { 3007 ret = EINVAL; 3008 break; 3009 } 3010 3011 /* Any removals resulting in an empty group should've handled this */ 3012 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 3013 3014 /* 3015 * Attempt to lock all member channels - if any are already 3016 * locked, unlock those acquired, sleep for a bit, and try 3017 * again. 3018 */ 3019 SLIST_FOREACH(sm, &sg->members, link) { 3020 if (CHN_TRYLOCK(sm->ch) == 0) { 3021 int timo = hz * 5/1000; 3022 if (timo < 1) 3023 timo = 1; 3024 3025 /* Release all locked channels so far, retry */ 3026 SLIST_FOREACH(sm_tmp, &sg->members, link) { 3027 /* sm is the member already locked */ 3028 if (sm == sm_tmp) 3029 break; 3030 CHN_UNLOCK(sm_tmp->ch); 3031 } 3032 3033 /** @todo Is PRIBIO correct/ */ 3034 ret = lksleep(sm, &snd_pcm_syncgroups_mtx, 3035 PCATCH, "pcmsg", timo); 3036 if (ret == EINTR || ret == ERESTART) 3037 break; 3038 3039 needlocks = 1; 3040 ret = 0; /* Assumes ret == EAGAIN... */ 3041 } 3042 } 3043 } while (needlocks && ret == 0); 3044 3045 /* Proceed only if no errors encountered. */ 3046 if (ret == 0) { 3047 /* Launch channels */ 3048 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 3049 SLIST_REMOVE_HEAD(&sg->members, link); 3050 3051 c = sm->ch; 3052 c->sm = NULL; 3053 chn_start(c, 1); 3054 c->flags &= ~CHN_F_NOTRIGGER; 3055 CHN_UNLOCK(c); 3056 3057 kfree(sm, M_DEVBUF); 3058 } 3059 3060 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3061 kfree(sg, M_DEVBUF); 3062 } 3063 3064 PCM_SG_UNLOCK(); 3065 3066 /* 3067 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3068 * first. 3069 */ 3070 if (ret == 0) 3071 free_unr(pcmsg_unrhdr, sg_id); 3072 3073 return (ret); 3074 } 3075 3076 /** 3077 * @brief Handler for SNDCTL_DSP_POLICY 3078 * 3079 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3080 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3081 * specifying those two parameters, s/he simply selects a number from 0..10 3082 * which corresponds to a buffer size. Smaller numbers request smaller 3083 * buffers with lower latencies (at greater overhead from more frequent 3084 * interrupts), while greater numbers behave in the opposite manner. 3085 * 3086 * The 4Front spec states that a value of 5 should be the default. However, 3087 * this implementation deviates slightly by using a linear scale without 3088 * consulting drivers. I.e., even though drivers may have different default 3089 * buffer sizes, a policy argument of 5 will have the same result across 3090 * all drivers. 3091 * 3092 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3093 * more information. 3094 * 3095 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3096 * work with hardware drivers directly. 3097 * 3098 * @note PCM channel arguments must not be locked by caller. 3099 * 3100 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3101 * @param rdch " recording channel (optional; may be NULL) 3102 * @param policy Integer from [0:10] 3103 * 3104 * @retval 0 constant (for now) 3105 */ 3106 static int 3107 dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3108 { 3109 int ret; 3110 3111 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3112 return (EIO); 3113 3114 /* Default: success */ 3115 ret = 0; 3116 3117 if (rdch) { 3118 CHN_LOCK(rdch); 3119 ret = chn_setlatency(rdch, policy); 3120 CHN_UNLOCK(rdch); 3121 } 3122 3123 if (wrch && ret == 0) { 3124 CHN_LOCK(wrch); 3125 ret = chn_setlatency(wrch, policy); 3126 CHN_UNLOCK(wrch); 3127 } 3128 3129 if (ret) 3130 ret = EIO; 3131 3132 return (ret); 3133 } 3134 3135 /** 3136 * @brief Enable or disable "cooked" mode 3137 * 3138 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3139 * is the default, the sound system handles rate and format conversions 3140 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3141 * operates with 44100Hz/16bit/signed samples). 3142 * 3143 * Disabling cooked mode is intended for applications wanting to mmap() 3144 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3145 * feeder architecture, presumably to gain as much control over audio 3146 * hardware as possible. 3147 * 3148 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3149 * for more details. 3150 * 3151 * @param wrch playback channel (optional; may be NULL) 3152 * @param rdch recording channel (optional; may be NULL) 3153 * @param enabled 0 = raw mode, 1 = cooked mode 3154 * 3155 * @retval EINVAL Operation not yet supported. 3156 */ 3157 static int 3158 dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3159 { 3160 3161 /* 3162 * XXX I just don't get it. Why don't they call it 3163 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3164 * This is just plain so confusing, incoherent, 3165 * <insert any non-printable characters here>. 3166 */ 3167 if (!(enabled == 1 || enabled == 0)) 3168 return (EINVAL); 3169 3170 /* 3171 * I won't give in. I'm inverting its logic here and now. 3172 * Brag all you want, but "BITPERFECT" should be the better 3173 * term here. 3174 */ 3175 enabled ^= 0x00000001; 3176 3177 if (wrch != NULL) { 3178 CHN_LOCK(wrch); 3179 wrch->flags &= ~CHN_F_BITPERFECT; 3180 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3181 CHN_UNLOCK(wrch); 3182 } 3183 3184 if (rdch != NULL) { 3185 CHN_LOCK(rdch); 3186 rdch->flags &= ~CHN_F_BITPERFECT; 3187 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3188 CHN_UNLOCK(rdch); 3189 } 3190 3191 return (0); 3192 } 3193 3194 /** 3195 * @brief Retrieve channel interleaving order 3196 * 3197 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3198 * 3199 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3200 * for more details. 3201 * 3202 * @note As the ioctl definition is still under construction, FreeBSD 3203 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3204 * 3205 * @param wrch playback channel (optional; may be NULL) 3206 * @param rdch recording channel (optional; may be NULL) 3207 * @param map channel map (result will be stored there) 3208 * 3209 * @retval EINVAL Operation not yet supported. 3210 */ 3211 static int 3212 dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3213 { 3214 struct pcm_channel *ch; 3215 int ret; 3216 3217 ch = (wrch != NULL) ? wrch : rdch; 3218 if (ch != NULL) { 3219 CHN_LOCK(ch); 3220 ret = chn_oss_getorder(ch, map); 3221 CHN_UNLOCK(ch); 3222 } else 3223 ret = EINVAL; 3224 3225 return (ret); 3226 } 3227 3228 /** 3229 * @brief Specify channel interleaving order 3230 * 3231 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3232 * 3233 * @note As the ioctl definition is still under construction, FreeBSD 3234 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3235 * 3236 * @param wrch playback channel (optional; may be NULL) 3237 * @param rdch recording channel (optional; may be NULL) 3238 * @param map channel map 3239 * 3240 * @retval EINVAL Operation not yet supported. 3241 */ 3242 static int 3243 dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3244 { 3245 int ret; 3246 3247 ret = 0; 3248 3249 if (wrch != NULL) { 3250 CHN_LOCK(wrch); 3251 ret = chn_oss_setorder(wrch, map); 3252 CHN_UNLOCK(wrch); 3253 } 3254 3255 if (ret == 0 && rdch != NULL) { 3256 CHN_LOCK(rdch); 3257 ret = chn_oss_setorder(rdch, map); 3258 CHN_UNLOCK(rdch); 3259 } 3260 3261 return (ret); 3262 } 3263 3264 static int 3265 dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3266 int *mask) 3267 { 3268 struct pcm_channel *ch; 3269 uint32_t chnmask; 3270 int ret; 3271 3272 chnmask = 0; 3273 ch = (wrch != NULL) ? wrch : rdch; 3274 3275 if (ch != NULL) { 3276 CHN_LOCK(ch); 3277 ret = chn_oss_getmask(ch, &chnmask); 3278 CHN_UNLOCK(ch); 3279 } else 3280 ret = EINVAL; 3281 3282 if (ret == 0) 3283 *mask = chnmask; 3284 3285 return (ret); 3286 } 3287 3288 #ifdef OSSV4_EXPERIMENT 3289 /** 3290 * @brief Retrieve an audio device's label 3291 * 3292 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3293 * 3294 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3295 * for more details. 3296 * 3297 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3298 * consoles) can show variable "labels" for certain controls. By default 3299 * the application name (say quake) is shown as the label but 3300 * applications may change the labels themselves." 3301 * 3302 * @note As the ioctl definition is still under construction, FreeBSD 3303 * does not currently support @c SNDCTL_GETLABEL. 3304 * 3305 * @param wrch playback channel (optional; may be NULL) 3306 * @param rdch recording channel (optional; may be NULL) 3307 * @param label label gets copied here 3308 * 3309 * @retval EINVAL Operation not yet supported. 3310 */ 3311 static int 3312 dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3313 { 3314 return (EINVAL); 3315 } 3316 3317 /** 3318 * @brief Specify an audio device's label 3319 * 3320 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3321 * comments for @c dsp_oss_getlabel immediately above. 3322 * 3323 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3324 * for more details. 3325 * 3326 * @note As the ioctl definition is still under construction, FreeBSD 3327 * does not currently support SNDCTL_SETLABEL. 3328 * 3329 * @param wrch playback channel (optional; may be NULL) 3330 * @param rdch recording channel (optional; may be NULL) 3331 * @param label label gets copied from here 3332 * 3333 * @retval EINVAL Operation not yet supported. 3334 */ 3335 static int 3336 dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3337 { 3338 return (EINVAL); 3339 } 3340 3341 /** 3342 * @brief Retrieve name of currently played song 3343 * 3344 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3345 * tell the system the name of the currently playing song, which would be 3346 * visible in @c /dev/sndstat. 3347 * 3348 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3349 * for more details. 3350 * 3351 * @note As the ioctl definition is still under construction, FreeBSD 3352 * does not currently support SNDCTL_GETSONG. 3353 * 3354 * @param wrch playback channel (optional; may be NULL) 3355 * @param rdch recording channel (optional; may be NULL) 3356 * @param song song name gets copied here 3357 * 3358 * @retval EINVAL Operation not yet supported. 3359 */ 3360 static int 3361 dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3362 { 3363 return (EINVAL); 3364 } 3365 3366 /** 3367 * @brief Retrieve name of currently played song 3368 * 3369 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3370 * tell the system the name of the currently playing song, which would be 3371 * visible in @c /dev/sndstat. 3372 * 3373 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3374 * for more details. 3375 * 3376 * @note As the ioctl definition is still under construction, FreeBSD 3377 * does not currently support SNDCTL_SETSONG. 3378 * 3379 * @param wrch playback channel (optional; may be NULL) 3380 * @param rdch recording channel (optional; may be NULL) 3381 * @param song song name gets copied from here 3382 * 3383 * @retval EINVAL Operation not yet supported. 3384 */ 3385 static int 3386 dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3387 { 3388 return (EINVAL); 3389 } 3390 3391 /** 3392 * @brief Rename a device 3393 * 3394 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3395 * 3396 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3397 * more details. 3398 * 3399 * From Hannu@4Front: "This call is used to change the device name 3400 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3401 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3402 * name depending on the current context (for example 'OSS virtual wave table 3403 * synth' or 'VoIP link to London')." 3404 * 3405 * @note As the ioctl definition is still under construction, FreeBSD 3406 * does not currently support SNDCTL_SETNAME. 3407 * 3408 * @param wrch playback channel (optional; may be NULL) 3409 * @param rdch recording channel (optional; may be NULL) 3410 * @param name new device name gets copied from here 3411 * 3412 * @retval EINVAL Operation not yet supported. 3413 */ 3414 static int 3415 dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3416 { 3417 return (EINVAL); 3418 } 3419 #endif /* !OSSV4_EXPERIMENT */ 3420