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_DECLARE_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_NONBLOCK) 593 rdch->flags |= CHN_F_NBIO; 594 if (flags & O_EXCL) 595 rdch->flags |= CHN_F_EXCLUSIVE; 596 pcm_chnref(rdch, 1); 597 if (volctl == DSP_CDEV_VOLCTL_NONE) 598 chn_vpc_reset(rdch, SND_VOL_C_PCM, 0); 599 CHN_UNLOCK(rdch); 600 } 601 } 602 603 if (DSP_F_WRITE(flags)) { 604 /* open for write */ 605 wrerror = pcm_chnalloc(d, &wrch, PCMDIR_PLAY, 606 curproc->p_pid, curproc->p_comm, wdevunit); 607 608 if (wrerror == 0 && chn_reset(wrch, fmt, spd) != 0) 609 wrerror = ENXIO; 610 611 if (volctl == DSP_CDEV_VOLCTL_WRITE) 612 wrerror = 0; 613 614 if (wrerror != 0) { 615 if (wrch != NULL) 616 pcm_chnrelease(wrch); 617 if (!DSP_F_DUPLEX(flags)) { 618 if (rdch != NULL) { 619 /* 620 * Lock, deref and release previously 621 * created record channel 622 */ 623 CHN_LOCK(rdch); 624 pcm_chnref(rdch, -1); 625 pcm_chnrelease(rdch); 626 } 627 (void)snd_clone_release(i_dev); 628 PCM_RELEASE_QUICK(d); 629 PCM_GIANT_EXIT(d); 630 return (wrerror); 631 } 632 wrch = NULL; 633 } else if (volctl == DSP_CDEV_VOLCTL_WRITE) { 634 if (wrch != NULL) { 635 pcm_chnref(wrch, 1); 636 pcm_chnrelease(wrch); 637 } 638 } else { 639 if (flags & O_NONBLOCK) 640 wrch->flags |= CHN_F_NBIO; 641 if (flags & O_EXCL) 642 wrch->flags |= CHN_F_EXCLUSIVE; 643 pcm_chnref(wrch, 1); 644 if (volctl == DSP_CDEV_VOLCTL_NONE) 645 chn_vpc_reset(wrch, SND_VOL_C_PCM, 0); 646 CHN_UNLOCK(wrch); 647 } 648 } 649 650 651 PCM_LOCK(d); 652 653 /* 654 * We're done. Allocate channels information for this cdev. 655 */ 656 switch (volctl) { 657 case DSP_CDEV_VOLCTL_READ: 658 KASSERT(wrch == NULL, ("wrch=%p not null!", wrch)); 659 dsp_cdevinfo_alloc(i_dev, NULL, NULL, rdch); 660 break; 661 case DSP_CDEV_VOLCTL_WRITE: 662 KASSERT(rdch == NULL, ("rdch=%p not null!", rdch)); 663 dsp_cdevinfo_alloc(i_dev, NULL, NULL, wrch); 664 break; 665 case DSP_CDEV_VOLCTL_NONE: 666 default: 667 if (wrch == NULL && rdch == NULL) { 668 (void)snd_clone_release(i_dev); 669 PCM_RELEASE(d); 670 PCM_UNLOCK(d); 671 PCM_GIANT_EXIT(d); 672 if (wrerror != 0) 673 return (wrerror); 674 if (rderror != 0) 675 return (rderror); 676 return (EINVAL); 677 } 678 dsp_cdevinfo_alloc(i_dev, rdch, wrch, NULL); 679 if (rdch != NULL) 680 CHN_INSERT_HEAD(d, rdch, channels.pcm.opened); 681 if (wrch != NULL) 682 CHN_INSERT_HEAD(d, wrch, channels.pcm.opened); 683 break; 684 } 685 686 /* 687 * Increase clone refcount for its automatic garbage collector. 688 */ 689 (void)snd_clone_ref(i_dev); 690 691 PCM_RELEASE(d); 692 PCM_UNLOCK(d); 693 694 PCM_GIANT_LEAVE(d); 695 696 return (0); 697 } 698 699 static int 700 dsp_close(struct dev_close_args *ap) 701 { 702 struct cdev *i_dev = ap->a_head.a_dev; 703 struct pcm_channel *rdch, *wrch, *volch; 704 struct snddev_info *d; 705 int sg_ids, rdref, wdref; 706 int subunit; 707 708 /* 709 * subunit is a unique number for the cloned device, it 710 * does NOT represent the virtual device channel. 711 */ 712 subunit = PCMSUBUNIT(i_dev); 713 714 d = dsp_get_info(i_dev); 715 if (!DSP_REGISTERED(d, i_dev)) 716 return (EBADF); 717 718 PCM_GIANT_ENTER(d); 719 720 PCM_LOCK(d); 721 PCM_WAIT(d); 722 PCM_ACQUIRE(d); 723 724 rdch = PCM_RDCH(i_dev); 725 wrch = PCM_WRCH(i_dev); 726 volch = PCM_VOLCH(i_dev); 727 728 PCM_RDCH(i_dev) = NULL; 729 PCM_WRCH(i_dev) = NULL; 730 PCM_VOLCH(i_dev) = NULL; 731 732 rdref = -1; 733 wdref = -1; 734 735 if (volch != NULL) { 736 if (volch == rdch) 737 rdref--; 738 else if (volch == wrch) 739 wdref--; 740 else { 741 CHN_LOCK(volch); 742 pcm_chnref(volch, -1); 743 CHN_UNLOCK(volch); 744 } 745 } 746 747 if (rdch != NULL) 748 CHN_REMOVE(d, rdch, channels.pcm.opened); 749 if (wrch != NULL) 750 CHN_REMOVE(d, wrch, channels.pcm.opened); 751 752 if (rdch != NULL || wrch != NULL) { 753 PCM_UNLOCK(d); 754 if (rdch != NULL) { 755 /* 756 * The channel itself need not be locked because: 757 * a) Adding a channel to a syncgroup happens only 758 * in dsp_ioctl(), which cannot run concurrently 759 * to dsp_close(). 760 * b) The syncmember pointer (sm) is protected by 761 * the global syncgroup list lock. 762 * c) A channel can't just disappear, invalidating 763 * pointers, unless it's closed/dereferenced 764 * first. 765 */ 766 PCM_SG_LOCK(); 767 sg_ids = chn_syncdestroy(rdch); 768 PCM_SG_UNLOCK(); 769 if (sg_ids != 0) 770 free_unr(pcmsg_unrhdr, sg_ids); 771 772 CHN_LOCK(rdch); 773 pcm_chnref(rdch, rdref); 774 chn_abort(rdch); /* won't sleep */ 775 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 776 CHN_F_DEAD | CHN_F_EXCLUSIVE); 777 chn_reset(rdch, 0, 0); 778 pcm_chnrelease(rdch); 779 } 780 if (wrch != NULL) { 781 /* 782 * Please see block above. 783 */ 784 PCM_SG_LOCK(); 785 sg_ids = chn_syncdestroy(wrch); 786 PCM_SG_UNLOCK(); 787 if (sg_ids != 0) 788 free_unr(pcmsg_unrhdr, sg_ids); 789 790 CHN_LOCK(wrch); 791 pcm_chnref(wrch, wdref); 792 chn_flush(wrch); /* may sleep */ 793 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MMAP | 794 CHN_F_DEAD | CHN_F_EXCLUSIVE); 795 chn_reset(wrch, 0, 0); 796 pcm_chnrelease(wrch); 797 } 798 PCM_LOCK(d); 799 } 800 801 dsp_cdevinfo_free(i_dev); 802 /* 803 * Release clone busy state and unref it so the automatic 804 * garbage collector will get the hint and do the remaining 805 * cleanup process. 806 */ 807 (void)snd_clone_release(i_dev); 808 809 /* 810 * destroy_dev() might sleep, so release pcm lock 811 * here and rely on pcm cv serialization. 812 */ 813 PCM_UNLOCK(d); 814 (void)snd_clone_unref(i_dev); 815 PCM_LOCK(d); 816 817 PCM_RELEASE(d); 818 PCM_UNLOCK(d); 819 820 PCM_GIANT_LEAVE(d); 821 822 /* 823 * PCMCHAN(i_dev) is not the actual channel but instead is 824 * simply the unique subunit we assigned to the clone device. 825 * 826 * We do not do this here but instead do it when the clone is 827 * GCd. 828 */ 829 /* 830 devfs_clone_bitmap_put(&DEVFS_CLONE_BITMAP(dsp), subunit); 831 */ 832 833 return (0); 834 } 835 836 static __inline int 837 dsp_io_ops(struct cdev *i_dev, struct uio *buf) 838 { 839 struct snddev_info *d; 840 struct pcm_channel **ch, *rdch, *wrch; 841 int (*chn_io)(struct pcm_channel *, struct uio *); 842 int prio, ret; 843 pid_t runpid; 844 845 KASSERT(i_dev != NULL && buf != NULL && 846 (buf->uio_rw == UIO_READ || buf->uio_rw == UIO_WRITE), 847 ("%s(): io train wreck!", __func__)); 848 849 d = dsp_get_info(i_dev); 850 if (!DSP_REGISTERED(d, i_dev)) 851 return (EBADF); 852 853 PCM_GIANT_ENTER(d); 854 855 switch (buf->uio_rw) { 856 case UIO_READ: 857 prio = SD_F_PRIO_RD; 858 ch = &rdch; 859 chn_io = chn_read; 860 break; 861 case UIO_WRITE: 862 prio = SD_F_PRIO_WR; 863 ch = &wrch; 864 chn_io = chn_write; 865 break; 866 default: 867 panic("invalid/corrupted uio direction: %d", buf->uio_rw); 868 break; 869 } 870 871 rdch = NULL; 872 wrch = NULL; 873 runpid = buf->uio_td->td_proc->p_pid; 874 875 getchns(i_dev, &rdch, &wrch, prio); 876 877 if (*ch == NULL || !((*ch)->flags & CHN_F_BUSY)) { 878 PCM_GIANT_EXIT(d); 879 return (EBADF); 880 } 881 882 if (((*ch)->flags & (CHN_F_MMAP | CHN_F_DEAD)) || 883 (((*ch)->flags & CHN_F_RUNNING) && (*ch)->pid != runpid)) { 884 relchns(i_dev, rdch, wrch, prio); 885 PCM_GIANT_EXIT(d); 886 return (EINVAL); 887 } else if (!((*ch)->flags & CHN_F_RUNNING)) { 888 (*ch)->flags |= CHN_F_RUNNING; 889 (*ch)->pid = runpid; 890 } 891 892 /* 893 * chn_read/write must give up channel lock in order to copy bytes 894 * from/to userland, so up the "in progress" counter to make sure 895 * someone else doesn't come along and muss up the buffer. 896 */ 897 ++(*ch)->inprog; 898 ret = chn_io(*ch, buf); 899 --(*ch)->inprog; 900 901 CHN_BROADCAST(&(*ch)->cv); 902 903 relchns(i_dev, rdch, wrch, prio); 904 905 PCM_GIANT_LEAVE(d); 906 907 return (ret); 908 } 909 910 static int 911 dsp_read(struct dev_read_args *ap) 912 { 913 struct cdev *i_dev = ap->a_head.a_dev; 914 struct uio *buf = ap->a_uio; 915 916 return (dsp_io_ops(i_dev, buf)); 917 } 918 919 static int 920 dsp_write(struct dev_write_args *ap) 921 { 922 struct cdev *i_dev = ap->a_head.a_dev; 923 struct uio *buf = ap->a_uio; 924 925 return (dsp_io_ops(i_dev, buf)); 926 } 927 928 static int 929 dsp_get_volume_channel(struct cdev *dev, struct pcm_channel **volch) 930 { 931 struct snddev_info *d; 932 struct pcm_channel *c; 933 int unit; 934 935 KASSERT(dev != NULL && volch != NULL, 936 ("%s(): NULL query dev=%p volch=%p", __func__, dev, volch)); 937 938 d = dsp_get_info(dev); 939 if (!PCM_REGISTERED(d)) { 940 *volch = NULL; 941 return (EINVAL); 942 } 943 944 PCM_UNLOCKASSERT(d); 945 946 *volch = NULL; 947 948 c = PCM_VOLCH(dev); 949 if (c != NULL) { 950 if (!(c->feederflags & (1 << FEEDER_VOLUME))) 951 return (-1); 952 *volch = c; 953 return (0); 954 } 955 956 PCM_LOCK(d); 957 PCM_WAIT(d); 958 PCM_ACQUIRE(d); 959 960 unit = dev2unit(dev); 961 962 CHN_FOREACH(c, d, channels.pcm) { 963 CHN_LOCK(c); 964 if (c->unit != unit) { 965 CHN_UNLOCK(c); 966 continue; 967 } 968 *volch = c; 969 pcm_chnref(c, 1); 970 PCM_VOLCH(dev) = c; 971 CHN_UNLOCK(c); 972 PCM_RELEASE(d); 973 PCM_UNLOCK(d); 974 return ((c->feederflags & (1 << FEEDER_VOLUME)) ? 0 : -1); 975 } 976 977 PCM_RELEASE(d); 978 PCM_UNLOCK(d); 979 980 return (EINVAL); 981 } 982 983 static int 984 dsp_ioctl_channel(struct cdev *dev, struct pcm_channel *volch, u_long cmd, 985 caddr_t arg) 986 { 987 struct snddev_info *d; 988 struct pcm_channel *rdch, *wrch; 989 int j, devtype, ret; 990 991 d = dsp_get_info(dev); 992 if (!PCM_REGISTERED(d) || !(dsp_get_flags(dev) & SD_F_VPC)) 993 return (-1); 994 995 PCM_UNLOCKASSERT(d); 996 997 j = cmd & 0xff; 998 999 rdch = PCM_RDCH(dev); 1000 wrch = PCM_WRCH(dev); 1001 1002 /* No specific channel, look into cache */ 1003 if (volch == NULL) 1004 volch = PCM_VOLCH(dev); 1005 1006 /* Look harder */ 1007 if (volch == NULL) { 1008 if (j == SOUND_MIXER_RECLEV && rdch != NULL) 1009 volch = rdch; 1010 else if (j == SOUND_MIXER_PCM && wrch != NULL) 1011 volch = wrch; 1012 } 1013 1014 devtype = PCMDEV(dev); 1015 1016 /* Look super harder */ 1017 if (volch == NULL && 1018 (devtype == SND_DEV_DSPHW_PLAY || devtype == SND_DEV_DSPHW_VPLAY || 1019 devtype == SND_DEV_DSPHW_REC || devtype == SND_DEV_DSPHW_VREC)) { 1020 ret = dsp_get_volume_channel(dev, &volch); 1021 if (ret != 0) 1022 return (ret); 1023 if (volch == NULL) 1024 return (EINVAL); 1025 } 1026 1027 /* Final validation */ 1028 if (volch != NULL) { 1029 CHN_LOCK(volch); 1030 if (!(volch->feederflags & (1 << FEEDER_VOLUME))) { 1031 CHN_UNLOCK(volch); 1032 return (-1); 1033 } 1034 if (volch->direction == PCMDIR_PLAY) 1035 wrch = volch; 1036 else 1037 rdch = volch; 1038 } 1039 1040 ret = EINVAL; 1041 1042 if (volch != NULL && 1043 ((j == SOUND_MIXER_PCM && volch->direction == PCMDIR_PLAY) || 1044 (j == SOUND_MIXER_RECLEV && volch->direction == PCMDIR_REC))) { 1045 if ((cmd & ~0xff) == MIXER_WRITE(0)) { 1046 int left, right, center; 1047 1048 left = *(int *)arg & 0x7f; 1049 right = ((*(int *)arg) >> 8) & 0x7f; 1050 center = (left + right) >> 1; 1051 chn_setvolume_multi(volch, SND_VOL_C_PCM, left, right, 1052 center); 1053 } else if ((cmd & ~0xff) == MIXER_READ(0)) { 1054 *(int *)arg = CHN_GETVOLUME(volch, 1055 SND_VOL_C_PCM, SND_CHN_T_FL); 1056 *(int *)arg |= CHN_GETVOLUME(volch, 1057 SND_VOL_C_PCM, SND_CHN_T_FR) << 8; 1058 } 1059 ret = 0; 1060 } else if (rdch != NULL || wrch != NULL) { 1061 switch (j) { 1062 case SOUND_MIXER_DEVMASK: 1063 case SOUND_MIXER_CAPS: 1064 case SOUND_MIXER_STEREODEVS: 1065 if ((cmd & ~0xff) == MIXER_READ(0)) { 1066 *(int *)arg = 0; 1067 if (rdch != NULL) 1068 *(int *)arg |= SOUND_MASK_RECLEV; 1069 if (wrch != NULL) 1070 *(int *)arg |= SOUND_MASK_PCM; 1071 } 1072 ret = 0; 1073 break; 1074 case SOUND_MIXER_RECMASK: 1075 case SOUND_MIXER_RECSRC: 1076 if ((cmd & ~0xff) == MIXER_READ(0)) 1077 *(int *)arg = 0; 1078 ret = 0; 1079 break; 1080 default: 1081 break; 1082 } 1083 } 1084 1085 if (volch != NULL) 1086 CHN_UNLOCK(volch); 1087 1088 return (ret); 1089 } 1090 1091 static int 1092 dsp_ioctl(struct dev_ioctl_args *ap) 1093 { 1094 struct cdev *i_dev = ap->a_head.a_dev; 1095 u_long cmd = ap->a_cmd; 1096 caddr_t arg = ap->a_data; 1097 struct pcm_channel *chn, *rdch, *wrch; 1098 struct snddev_info *d; 1099 u_long xcmd; 1100 int *arg_i, ret, tmp; 1101 1102 d = dsp_get_info(i_dev); 1103 if (!DSP_REGISTERED(d, i_dev)) 1104 return (EBADF); 1105 1106 PCM_GIANT_ENTER(d); 1107 1108 arg_i = (int *)arg; 1109 ret = 0; 1110 xcmd = 0; 1111 chn = NULL; 1112 1113 if (IOCGROUP(cmd) == 'M') { 1114 if (cmd == OSS_GETVERSION) { 1115 *arg_i = SOUND_VERSION; 1116 PCM_GIANT_EXIT(d); 1117 return (0); 1118 } 1119 ret = dsp_ioctl_channel(i_dev, PCM_VOLCH(i_dev), cmd, arg); 1120 if (ret != -1) { 1121 PCM_GIANT_EXIT(d); 1122 return (ret); 1123 } 1124 1125 if (d->mixer_dev != NULL) { 1126 PCM_ACQUIRE_QUICK(d); 1127 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, 1128 MIXER_CMD_DIRECT); 1129 PCM_RELEASE_QUICK(d); 1130 } else 1131 ret = EBADF; 1132 1133 PCM_GIANT_EXIT(d); 1134 1135 return (ret); 1136 } 1137 1138 /* 1139 * Certain ioctls may be made on any type of device (audio, mixer, 1140 * and MIDI). Handle those special cases here. 1141 */ 1142 if (IOCGROUP(cmd) == 'X') { 1143 PCM_ACQUIRE_QUICK(d); 1144 switch(cmd) { 1145 case SNDCTL_SYSINFO: 1146 sound_oss_sysinfo((oss_sysinfo *)arg); 1147 break; 1148 case SNDCTL_CARDINFO: 1149 ret = sound_oss_card_info((oss_card_info *)arg); 1150 break; 1151 case SNDCTL_AUDIOINFO: 1152 case SNDCTL_AUDIOINFO_EX: 1153 case SNDCTL_ENGINEINFO: 1154 ret = dsp_oss_audioinfo(i_dev, (oss_audioinfo *)arg); 1155 break; 1156 case SNDCTL_MIXERINFO: 1157 ret = mixer_oss_mixerinfo(i_dev, (oss_mixerinfo *)arg); 1158 break; 1159 default: 1160 ret = EINVAL; 1161 } 1162 PCM_RELEASE_QUICK(d); 1163 PCM_GIANT_EXIT(d); 1164 return (ret); 1165 } 1166 1167 getchns(i_dev, &rdch, &wrch, 0); 1168 1169 if (wrch != NULL && (wrch->flags & CHN_F_DEAD)) 1170 wrch = NULL; 1171 if (rdch != NULL && (rdch->flags & CHN_F_DEAD)) 1172 rdch = NULL; 1173 1174 if (wrch == NULL && rdch == NULL) { 1175 PCM_GIANT_EXIT(d); 1176 return (EINVAL); 1177 } 1178 1179 switch(cmd) { 1180 #ifdef OLDPCM_IOCTL 1181 /* 1182 * we start with the new ioctl interface. 1183 */ 1184 case AIONWRITE: /* how many bytes can write ? */ 1185 if (wrch) { 1186 CHN_LOCK(wrch); 1187 /* 1188 if (wrch && wrch->bufhard.dl) 1189 while (chn_wrfeed(wrch) == 0); 1190 */ 1191 *arg_i = sndbuf_getfree(wrch->bufsoft); 1192 CHN_UNLOCK(wrch); 1193 } else { 1194 *arg_i = 0; 1195 ret = EINVAL; 1196 } 1197 break; 1198 1199 case AIOSSIZE: /* set the current blocksize */ 1200 { 1201 struct snd_size *p = (struct snd_size *)arg; 1202 1203 p->play_size = 0; 1204 p->rec_size = 0; 1205 PCM_ACQUIRE_QUICK(d); 1206 if (wrch) { 1207 CHN_LOCK(wrch); 1208 chn_setblocksize(wrch, 2, p->play_size); 1209 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1210 CHN_UNLOCK(wrch); 1211 } 1212 if (rdch) { 1213 CHN_LOCK(rdch); 1214 chn_setblocksize(rdch, 2, p->rec_size); 1215 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1216 CHN_UNLOCK(rdch); 1217 } 1218 PCM_RELEASE_QUICK(d); 1219 } 1220 break; 1221 case AIOGSIZE: /* get the current blocksize */ 1222 { 1223 struct snd_size *p = (struct snd_size *)arg; 1224 1225 if (wrch) { 1226 CHN_LOCK(wrch); 1227 p->play_size = sndbuf_getblksz(wrch->bufsoft); 1228 CHN_UNLOCK(wrch); 1229 } 1230 if (rdch) { 1231 CHN_LOCK(rdch); 1232 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 1233 CHN_UNLOCK(rdch); 1234 } 1235 } 1236 break; 1237 1238 case AIOSFMT: 1239 case AIOGFMT: 1240 { 1241 snd_chan_param *p = (snd_chan_param *)arg; 1242 1243 if (cmd == AIOSFMT && 1244 ((p->play_format != 0 && p->play_rate == 0) || 1245 (p->rec_format != 0 && p->rec_rate == 0))) { 1246 ret = EINVAL; 1247 break; 1248 } 1249 PCM_ACQUIRE_QUICK(d); 1250 if (wrch) { 1251 CHN_LOCK(wrch); 1252 if (cmd == AIOSFMT && p->play_format != 0) { 1253 chn_setformat(wrch, 1254 SND_FORMAT(p->play_format, 1255 AFMT_CHANNEL(wrch->format), 1256 AFMT_EXTCHANNEL(wrch->format))); 1257 chn_setspeed(wrch, p->play_rate); 1258 } 1259 p->play_rate = wrch->speed; 1260 p->play_format = AFMT_ENCODING(wrch->format); 1261 CHN_UNLOCK(wrch); 1262 } else { 1263 p->play_rate = 0; 1264 p->play_format = 0; 1265 } 1266 if (rdch) { 1267 CHN_LOCK(rdch); 1268 if (cmd == AIOSFMT && p->rec_format != 0) { 1269 chn_setformat(rdch, 1270 SND_FORMAT(p->rec_format, 1271 AFMT_CHANNEL(rdch->format), 1272 AFMT_EXTCHANNEL(rdch->format))); 1273 chn_setspeed(rdch, p->rec_rate); 1274 } 1275 p->rec_rate = rdch->speed; 1276 p->rec_format = AFMT_ENCODING(rdch->format); 1277 CHN_UNLOCK(rdch); 1278 } else { 1279 p->rec_rate = 0; 1280 p->rec_format = 0; 1281 } 1282 PCM_RELEASE_QUICK(d); 1283 } 1284 break; 1285 1286 case AIOGCAP: /* get capabilities */ 1287 { 1288 snd_capabilities *p = (snd_capabilities *)arg; 1289 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 1290 struct cdev *pdev; 1291 1292 PCM_LOCK(d); 1293 if (rdch) { 1294 CHN_LOCK(rdch); 1295 rcaps = chn_getcaps(rdch); 1296 } 1297 if (wrch) { 1298 CHN_LOCK(wrch); 1299 pcaps = chn_getcaps(wrch); 1300 } 1301 p->rate_min = max(rcaps? rcaps->minspeed : 0, 1302 pcaps? pcaps->minspeed : 0); 1303 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 1304 pcaps? pcaps->maxspeed : 1000000); 1305 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 1306 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 1307 /* XXX bad on sb16 */ 1308 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 1309 (wrch? chn_getformats(wrch) : 0xffffffff); 1310 if (rdch && wrch) 1311 p->formats |= (dsp_get_flags(i_dev) & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 1312 pdev = d->mixer_dev; 1313 p->mixers = 1; /* default: one mixer */ 1314 p->inputs = pdev->si_drv1? mix_getdevs(pdev->si_drv1) : 0; 1315 p->left = p->right = 100; 1316 if (wrch) 1317 CHN_UNLOCK(wrch); 1318 if (rdch) 1319 CHN_UNLOCK(rdch); 1320 PCM_UNLOCK(d); 1321 } 1322 break; 1323 1324 case AIOSTOP: 1325 if (*arg_i == AIOSYNC_PLAY && wrch) { 1326 CHN_LOCK(wrch); 1327 *arg_i = chn_abort(wrch); 1328 CHN_UNLOCK(wrch); 1329 } else if (*arg_i == AIOSYNC_CAPTURE && rdch) { 1330 CHN_LOCK(rdch); 1331 *arg_i = chn_abort(rdch); 1332 CHN_UNLOCK(rdch); 1333 } else { 1334 kprintf("AIOSTOP: bad channel 0x%x\n", *arg_i); 1335 *arg_i = 0; 1336 } 1337 break; 1338 1339 case AIOSYNC: 1340 kprintf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 1341 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 1342 break; 1343 #endif 1344 /* 1345 * here follow the standard ioctls (filio.h etc.) 1346 */ 1347 case FIONREAD: /* get # bytes to read */ 1348 if (rdch) { 1349 CHN_LOCK(rdch); 1350 /* if (rdch && rdch->bufhard.dl) 1351 while (chn_rdfeed(rdch) == 0); 1352 */ 1353 *arg_i = sndbuf_getready(rdch->bufsoft); 1354 CHN_UNLOCK(rdch); 1355 } else { 1356 *arg_i = 0; 1357 ret = EINVAL; 1358 } 1359 break; 1360 1361 case FIOASYNC: /*set/clear async i/o */ 1362 DEB( kprintf("FIOASYNC\n") ; ) 1363 break; 1364 1365 case SNDCTL_DSP_NONBLOCK: /* set non-blocking i/o */ 1366 case FIONBIO: /* set/clear non-blocking i/o */ 1367 if (rdch) { 1368 CHN_LOCK(rdch); 1369 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1370 rdch->flags |= CHN_F_NBIO; 1371 else 1372 rdch->flags &= ~CHN_F_NBIO; 1373 CHN_UNLOCK(rdch); 1374 } 1375 if (wrch) { 1376 CHN_LOCK(wrch); 1377 if (cmd == SNDCTL_DSP_NONBLOCK || *arg_i) 1378 wrch->flags |= CHN_F_NBIO; 1379 else 1380 wrch->flags &= ~CHN_F_NBIO; 1381 CHN_UNLOCK(wrch); 1382 } 1383 break; 1384 1385 /* 1386 * Finally, here is the linux-compatible ioctl interface 1387 */ 1388 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 1389 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 1390 case SNDCTL_DSP_GETBLKSIZE: 1391 chn = wrch ? wrch : rdch; 1392 if (chn) { 1393 CHN_LOCK(chn); 1394 *arg_i = sndbuf_getblksz(chn->bufsoft); 1395 CHN_UNLOCK(chn); 1396 } else { 1397 *arg_i = 0; 1398 ret = EINVAL; 1399 } 1400 break; 1401 1402 case SNDCTL_DSP_SETBLKSIZE: 1403 RANGE(*arg_i, 16, 65536); 1404 PCM_ACQUIRE_QUICK(d); 1405 if (wrch) { 1406 CHN_LOCK(wrch); 1407 chn_setblocksize(wrch, 2, *arg_i); 1408 CHN_UNLOCK(wrch); 1409 } 1410 if (rdch) { 1411 CHN_LOCK(rdch); 1412 chn_setblocksize(rdch, 2, *arg_i); 1413 CHN_UNLOCK(rdch); 1414 } 1415 PCM_RELEASE_QUICK(d); 1416 break; 1417 1418 case SNDCTL_DSP_RESET: 1419 DEB(kprintf("dsp reset\n")); 1420 if (wrch) { 1421 CHN_LOCK(wrch); 1422 chn_abort(wrch); 1423 chn_resetbuf(wrch); 1424 CHN_UNLOCK(wrch); 1425 } 1426 if (rdch) { 1427 CHN_LOCK(rdch); 1428 chn_abort(rdch); 1429 chn_resetbuf(rdch); 1430 CHN_UNLOCK(rdch); 1431 } 1432 break; 1433 1434 case SNDCTL_DSP_SYNC: 1435 DEB(kprintf("dsp sync\n")); 1436 /* chn_sync may sleep */ 1437 if (wrch) { 1438 CHN_LOCK(wrch); 1439 chn_sync(wrch, 0); 1440 CHN_UNLOCK(wrch); 1441 } 1442 break; 1443 1444 case SNDCTL_DSP_SPEED: 1445 /* chn_setspeed may sleep */ 1446 tmp = 0; 1447 PCM_ACQUIRE_QUICK(d); 1448 if (wrch) { 1449 CHN_LOCK(wrch); 1450 ret = chn_setspeed(wrch, *arg_i); 1451 tmp = wrch->speed; 1452 CHN_UNLOCK(wrch); 1453 } 1454 if (rdch && ret == 0) { 1455 CHN_LOCK(rdch); 1456 ret = chn_setspeed(rdch, *arg_i); 1457 if (tmp == 0) 1458 tmp = rdch->speed; 1459 CHN_UNLOCK(rdch); 1460 } 1461 PCM_RELEASE_QUICK(d); 1462 *arg_i = tmp; 1463 break; 1464 1465 case SOUND_PCM_READ_RATE: 1466 chn = wrch ? wrch : rdch; 1467 if (chn) { 1468 CHN_LOCK(chn); 1469 *arg_i = chn->speed; 1470 CHN_UNLOCK(chn); 1471 } else { 1472 *arg_i = 0; 1473 ret = EINVAL; 1474 } 1475 break; 1476 1477 case SNDCTL_DSP_STEREO: 1478 tmp = -1; 1479 *arg_i = (*arg_i)? 2 : 1; 1480 PCM_ACQUIRE_QUICK(d); 1481 if (wrch) { 1482 CHN_LOCK(wrch); 1483 ret = chn_setformat(wrch, 1484 SND_FORMAT(wrch->format, *arg_i, 0)); 1485 tmp = (AFMT_CHANNEL(wrch->format) > 1)? 1 : 0; 1486 CHN_UNLOCK(wrch); 1487 } 1488 if (rdch && ret == 0) { 1489 CHN_LOCK(rdch); 1490 ret = chn_setformat(rdch, 1491 SND_FORMAT(rdch->format, *arg_i, 0)); 1492 if (tmp == -1) 1493 tmp = (AFMT_CHANNEL(rdch->format) > 1)? 1 : 0; 1494 CHN_UNLOCK(rdch); 1495 } 1496 PCM_RELEASE_QUICK(d); 1497 *arg_i = tmp; 1498 break; 1499 1500 case SOUND_PCM_WRITE_CHANNELS: 1501 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 1502 if (*arg_i < 0) { 1503 *arg_i = 0; 1504 ret = EINVAL; 1505 break; 1506 } 1507 if (*arg_i != 0) { 1508 struct pcmchan_matrix *m; 1509 uint32_t ext; 1510 1511 tmp = 0; 1512 if (*arg_i > SND_CHN_MAX) 1513 *arg_i = SND_CHN_MAX; 1514 1515 m = feeder_matrix_default_channel_map(*arg_i); 1516 if (m != NULL) 1517 ext = m->ext; 1518 else 1519 ext = 0; 1520 1521 PCM_ACQUIRE_QUICK(d); 1522 if (wrch) { 1523 CHN_LOCK(wrch); 1524 ret = chn_setformat(wrch, 1525 SND_FORMAT(wrch->format, *arg_i, ext)); 1526 tmp = AFMT_CHANNEL(wrch->format); 1527 CHN_UNLOCK(wrch); 1528 } 1529 if (rdch && ret == 0) { 1530 CHN_LOCK(rdch); 1531 ret = chn_setformat(rdch, 1532 SND_FORMAT(rdch->format, *arg_i, ext)); 1533 if (tmp == 0) 1534 tmp = AFMT_CHANNEL(rdch->format); 1535 CHN_UNLOCK(rdch); 1536 } 1537 PCM_RELEASE_QUICK(d); 1538 *arg_i = tmp; 1539 } else { 1540 chn = wrch ? wrch : rdch; 1541 CHN_LOCK(chn); 1542 *arg_i = AFMT_CHANNEL(chn->format); 1543 CHN_UNLOCK(chn); 1544 } 1545 break; 1546 1547 case SOUND_PCM_READ_CHANNELS: 1548 chn = wrch ? wrch : rdch; 1549 if (chn) { 1550 CHN_LOCK(chn); 1551 *arg_i = AFMT_CHANNEL(chn->format); 1552 CHN_UNLOCK(chn); 1553 } else { 1554 *arg_i = 0; 1555 ret = EINVAL; 1556 } 1557 break; 1558 1559 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 1560 chn = wrch ? wrch : rdch; 1561 if (chn) { 1562 CHN_LOCK(chn); 1563 *arg_i = chn_getformats(chn); 1564 CHN_UNLOCK(chn); 1565 } else { 1566 *arg_i = 0; 1567 ret = EINVAL; 1568 } 1569 break; 1570 1571 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 1572 if (*arg_i != AFMT_QUERY) { 1573 tmp = 0; 1574 PCM_ACQUIRE_QUICK(d); 1575 if (wrch) { 1576 CHN_LOCK(wrch); 1577 ret = chn_setformat(wrch, SND_FORMAT(*arg_i, 1578 AFMT_CHANNEL(wrch->format), 1579 AFMT_EXTCHANNEL(wrch->format))); 1580 tmp = wrch->format; 1581 CHN_UNLOCK(wrch); 1582 } 1583 if (rdch && ret == 0) { 1584 CHN_LOCK(rdch); 1585 ret = chn_setformat(rdch, SND_FORMAT(*arg_i, 1586 AFMT_CHANNEL(rdch->format), 1587 AFMT_EXTCHANNEL(rdch->format))); 1588 if (tmp == 0) 1589 tmp = rdch->format; 1590 CHN_UNLOCK(rdch); 1591 } 1592 PCM_RELEASE_QUICK(d); 1593 *arg_i = AFMT_ENCODING(tmp); 1594 } else { 1595 chn = wrch ? wrch : rdch; 1596 CHN_LOCK(chn); 1597 *arg_i = AFMT_ENCODING(chn->format); 1598 CHN_UNLOCK(chn); 1599 } 1600 break; 1601 1602 case SNDCTL_DSP_SETFRAGMENT: 1603 DEB(kprintf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 1604 { 1605 uint32_t fragln = (*arg_i) & 0x0000ffff; 1606 uint32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 1607 uint32_t fragsz; 1608 uint32_t r_maxfrags, r_fragsz; 1609 1610 RANGE(fragln, 4, 16); 1611 fragsz = 1 << fragln; 1612 1613 if (maxfrags == 0) 1614 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1615 if (maxfrags < 2) 1616 maxfrags = 2; 1617 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 1618 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 1619 1620 DEB(kprintf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 1621 PCM_ACQUIRE_QUICK(d); 1622 if (rdch) { 1623 CHN_LOCK(rdch); 1624 ret = chn_setblocksize(rdch, maxfrags, fragsz); 1625 r_maxfrags = sndbuf_getblkcnt(rdch->bufsoft); 1626 r_fragsz = sndbuf_getblksz(rdch->bufsoft); 1627 CHN_UNLOCK(rdch); 1628 } else { 1629 r_maxfrags = maxfrags; 1630 r_fragsz = fragsz; 1631 } 1632 if (wrch && ret == 0) { 1633 CHN_LOCK(wrch); 1634 ret = chn_setblocksize(wrch, maxfrags, fragsz); 1635 maxfrags = sndbuf_getblkcnt(wrch->bufsoft); 1636 fragsz = sndbuf_getblksz(wrch->bufsoft); 1637 CHN_UNLOCK(wrch); 1638 } else { /* use whatever came from the read channel */ 1639 maxfrags = r_maxfrags; 1640 fragsz = r_fragsz; 1641 } 1642 PCM_RELEASE_QUICK(d); 1643 1644 fragln = 0; 1645 while (fragsz > 1) { 1646 fragln++; 1647 fragsz >>= 1; 1648 } 1649 *arg_i = (maxfrags << 16) | fragln; 1650 } 1651 break; 1652 1653 case SNDCTL_DSP_GETISPACE: 1654 /* return the size of data available in the input queue */ 1655 { 1656 audio_buf_info *a = (audio_buf_info *)arg; 1657 if (rdch) { 1658 struct snd_dbuf *bs = rdch->bufsoft; 1659 1660 CHN_LOCK(rdch); 1661 a->bytes = sndbuf_getready(bs); 1662 a->fragments = a->bytes / sndbuf_getblksz(bs); 1663 a->fragstotal = sndbuf_getblkcnt(bs); 1664 a->fragsize = sndbuf_getblksz(bs); 1665 CHN_UNLOCK(rdch); 1666 } else 1667 ret = EINVAL; 1668 } 1669 break; 1670 1671 case SNDCTL_DSP_GETOSPACE: 1672 /* return space available in the output queue */ 1673 { 1674 audio_buf_info *a = (audio_buf_info *)arg; 1675 if (wrch) { 1676 struct snd_dbuf *bs = wrch->bufsoft; 1677 1678 CHN_LOCK(wrch); 1679 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1680 a->bytes = sndbuf_getfree(bs); 1681 a->fragments = a->bytes / sndbuf_getblksz(bs); 1682 a->fragstotal = sndbuf_getblkcnt(bs); 1683 a->fragsize = sndbuf_getblksz(bs); 1684 CHN_UNLOCK(wrch); 1685 } else 1686 ret = EINVAL; 1687 } 1688 break; 1689 1690 case SNDCTL_DSP_GETIPTR: 1691 { 1692 count_info *a = (count_info *)arg; 1693 if (rdch) { 1694 struct snd_dbuf *bs = rdch->bufsoft; 1695 1696 CHN_LOCK(rdch); 1697 /* XXX abusive DMA update: chn_rdupdate(rdch); */ 1698 a->bytes = sndbuf_gettotal(bs); 1699 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 1700 a->ptr = sndbuf_getfreeptr(bs); 1701 rdch->blocks = sndbuf_getblocks(bs); 1702 CHN_UNLOCK(rdch); 1703 } else 1704 ret = EINVAL; 1705 } 1706 break; 1707 1708 case SNDCTL_DSP_GETOPTR: 1709 { 1710 count_info *a = (count_info *)arg; 1711 if (wrch) { 1712 struct snd_dbuf *bs = wrch->bufsoft; 1713 1714 CHN_LOCK(wrch); 1715 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1716 a->bytes = sndbuf_gettotal(bs); 1717 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 1718 a->ptr = sndbuf_getreadyptr(bs); 1719 wrch->blocks = sndbuf_getblocks(bs); 1720 CHN_UNLOCK(wrch); 1721 } else 1722 ret = EINVAL; 1723 } 1724 break; 1725 1726 case SNDCTL_DSP_GETCAPS: 1727 PCM_LOCK(d); 1728 *arg_i = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER; 1729 if (rdch && wrch && !(dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1730 *arg_i |= PCM_CAP_DUPLEX; 1731 PCM_UNLOCK(d); 1732 break; 1733 1734 case SOUND_PCM_READ_BITS: 1735 chn = wrch ? wrch : rdch; 1736 if (chn) { 1737 CHN_LOCK(chn); 1738 if (chn->format & AFMT_8BIT) 1739 *arg_i = 8; 1740 else if (chn->format & AFMT_16BIT) 1741 *arg_i = 16; 1742 else if (chn->format & AFMT_24BIT) 1743 *arg_i = 24; 1744 else if (chn->format & AFMT_32BIT) 1745 *arg_i = 32; 1746 else 1747 ret = EINVAL; 1748 CHN_UNLOCK(chn); 1749 } else { 1750 *arg_i = 0; 1751 ret = EINVAL; 1752 } 1753 break; 1754 1755 case SNDCTL_DSP_SETTRIGGER: 1756 if (rdch) { 1757 CHN_LOCK(rdch); 1758 rdch->flags &= ~CHN_F_NOTRIGGER; 1759 if (*arg_i & PCM_ENABLE_INPUT) 1760 chn_start(rdch, 1); 1761 else { 1762 chn_abort(rdch); 1763 chn_resetbuf(rdch); 1764 rdch->flags |= CHN_F_NOTRIGGER; 1765 } 1766 CHN_UNLOCK(rdch); 1767 } 1768 if (wrch) { 1769 CHN_LOCK(wrch); 1770 wrch->flags &= ~CHN_F_NOTRIGGER; 1771 if (*arg_i & PCM_ENABLE_OUTPUT) 1772 chn_start(wrch, 1); 1773 else { 1774 chn_abort(wrch); 1775 chn_resetbuf(wrch); 1776 wrch->flags |= CHN_F_NOTRIGGER; 1777 } 1778 CHN_UNLOCK(wrch); 1779 } 1780 break; 1781 1782 case SNDCTL_DSP_GETTRIGGER: 1783 *arg_i = 0; 1784 if (wrch) { 1785 CHN_LOCK(wrch); 1786 if (wrch->flags & CHN_F_TRIGGERED) 1787 *arg_i |= PCM_ENABLE_OUTPUT; 1788 CHN_UNLOCK(wrch); 1789 } 1790 if (rdch) { 1791 CHN_LOCK(rdch); 1792 if (rdch->flags & CHN_F_TRIGGERED) 1793 *arg_i |= PCM_ENABLE_INPUT; 1794 CHN_UNLOCK(rdch); 1795 } 1796 break; 1797 1798 case SNDCTL_DSP_GETODELAY: 1799 if (wrch) { 1800 struct snd_dbuf *bs = wrch->bufsoft; 1801 1802 CHN_LOCK(wrch); 1803 /* XXX abusive DMA update: chn_wrupdate(wrch); */ 1804 *arg_i = sndbuf_getready(bs); 1805 CHN_UNLOCK(wrch); 1806 } else 1807 ret = EINVAL; 1808 break; 1809 1810 case SNDCTL_DSP_POST: 1811 if (wrch) { 1812 CHN_LOCK(wrch); 1813 wrch->flags &= ~CHN_F_NOTRIGGER; 1814 chn_start(wrch, 1); 1815 CHN_UNLOCK(wrch); 1816 } 1817 break; 1818 1819 case SNDCTL_DSP_SETDUPLEX: 1820 /* 1821 * switch to full-duplex mode if card is in half-duplex 1822 * mode and is able to work in full-duplex mode 1823 */ 1824 PCM_LOCK(d); 1825 if (rdch && wrch && (dsp_get_flags(i_dev) & SD_F_SIMPLEX)) 1826 dsp_set_flags(i_dev, dsp_get_flags(i_dev)^SD_F_SIMPLEX); 1827 PCM_UNLOCK(d); 1828 break; 1829 1830 /* 1831 * The following four ioctls are simple wrappers around mixer_ioctl 1832 * with no further processing. xcmd is short for "translated 1833 * command". 1834 */ 1835 case SNDCTL_DSP_GETRECVOL: 1836 if (xcmd == 0) { 1837 xcmd = SOUND_MIXER_READ_RECLEV; 1838 chn = rdch; 1839 } 1840 /* FALLTHROUGH */ 1841 case SNDCTL_DSP_SETRECVOL: 1842 if (xcmd == 0) { 1843 xcmd = SOUND_MIXER_WRITE_RECLEV; 1844 chn = rdch; 1845 } 1846 /* FALLTHROUGH */ 1847 case SNDCTL_DSP_GETPLAYVOL: 1848 if (xcmd == 0) { 1849 xcmd = SOUND_MIXER_READ_PCM; 1850 chn = wrch; 1851 } 1852 /* FALLTHROUGH */ 1853 case SNDCTL_DSP_SETPLAYVOL: 1854 if (xcmd == 0) { 1855 xcmd = SOUND_MIXER_WRITE_PCM; 1856 chn = wrch; 1857 } 1858 1859 ret = dsp_ioctl_channel(i_dev, chn, xcmd, arg); 1860 if (ret != -1) { 1861 PCM_GIANT_EXIT(d); 1862 return (ret); 1863 } 1864 1865 if (d->mixer_dev != NULL) { 1866 PCM_ACQUIRE_QUICK(d); 1867 ret = mixer_ioctl_cmd(d->mixer_dev, xcmd, arg, -1, 1868 MIXER_CMD_DIRECT); 1869 PCM_RELEASE_QUICK(d); 1870 } else 1871 ret = ENOTSUP; 1872 1873 break; 1874 1875 case SNDCTL_DSP_GET_RECSRC_NAMES: 1876 case SNDCTL_DSP_GET_RECSRC: 1877 case SNDCTL_DSP_SET_RECSRC: 1878 if (d->mixer_dev != NULL) { 1879 PCM_ACQUIRE_QUICK(d); 1880 ret = mixer_ioctl_cmd(d->mixer_dev, cmd, arg, -1, 1881 MIXER_CMD_DIRECT); 1882 PCM_RELEASE_QUICK(d); 1883 } else 1884 ret = ENOTSUP; 1885 break; 1886 1887 /* 1888 * The following 3 ioctls aren't very useful at the moment. For 1889 * now, only a single channel is associated with a cdev (/dev/dspN 1890 * instance), so there's only a single output routing to use (i.e., 1891 * the wrch bound to this cdev). 1892 */ 1893 case SNDCTL_DSP_GET_PLAYTGT_NAMES: 1894 { 1895 oss_mixer_enuminfo *ei; 1896 ei = (oss_mixer_enuminfo *)arg; 1897 ei->dev = 0; 1898 ei->ctrl = 0; 1899 ei->version = 0; /* static for now */ 1900 ei->strindex[0] = 0; 1901 1902 if (wrch != NULL) { 1903 ei->nvalues = 1; 1904 strlcpy(ei->strings, wrch->name, 1905 sizeof(ei->strings)); 1906 } else { 1907 ei->nvalues = 0; 1908 ei->strings[0] = '\0'; 1909 } 1910 } 1911 break; 1912 case SNDCTL_DSP_GET_PLAYTGT: 1913 case SNDCTL_DSP_SET_PLAYTGT: /* yes, they are the same for now */ 1914 /* 1915 * Re: SET_PLAYTGT 1916 * OSSv4: "The value that was accepted by the device will 1917 * be returned back in the variable pointed by the 1918 * argument." 1919 */ 1920 if (wrch != NULL) 1921 *arg_i = 0; 1922 else 1923 ret = EINVAL; 1924 break; 1925 1926 case SNDCTL_DSP_SILENCE: 1927 /* 1928 * Flush the software (pre-feed) buffer, but try to minimize playback 1929 * interruption. (I.e., record unplayed samples with intent to 1930 * restore by SNDCTL_DSP_SKIP.) Intended for application "pause" 1931 * functionality. 1932 */ 1933 if (wrch == NULL) 1934 ret = EINVAL; 1935 else { 1936 struct snd_dbuf *bs; 1937 CHN_LOCK(wrch); 1938 while (wrch->inprog != 0) 1939 cv_wait(&wrch->cv, wrch->lock); 1940 bs = wrch->bufsoft; 1941 if ((bs->shadbuf != NULL) && (sndbuf_getready(bs) > 0)) { 1942 bs->sl = sndbuf_getready(bs); 1943 sndbuf_dispose(bs, bs->shadbuf, sndbuf_getready(bs)); 1944 sndbuf_fillsilence(bs); 1945 chn_start(wrch, 0); 1946 } 1947 CHN_UNLOCK(wrch); 1948 } 1949 break; 1950 1951 case SNDCTL_DSP_SKIP: 1952 /* 1953 * OSSv4 docs: "This ioctl call discards all unplayed samples in the 1954 * playback buffer by moving the current write position immediately 1955 * before the point where the device is currently reading the samples." 1956 */ 1957 if (wrch == NULL) 1958 ret = EINVAL; 1959 else { 1960 struct snd_dbuf *bs; 1961 CHN_LOCK(wrch); 1962 while (wrch->inprog != 0) 1963 cv_wait(&wrch->cv, wrch->lock); 1964 bs = wrch->bufsoft; 1965 if ((bs->shadbuf != NULL) && (bs->sl > 0)) { 1966 sndbuf_softreset(bs); 1967 sndbuf_acquire(bs, bs->shadbuf, bs->sl); 1968 bs->sl = 0; 1969 chn_start(wrch, 0); 1970 } 1971 CHN_UNLOCK(wrch); 1972 } 1973 break; 1974 1975 case SNDCTL_DSP_CURRENT_OPTR: 1976 case SNDCTL_DSP_CURRENT_IPTR: 1977 /** 1978 * @note Changing formats resets the buffer counters, which differs 1979 * from the 4Front drivers. However, I don't expect this to be 1980 * much of a problem. 1981 * 1982 * @note In a test where @c CURRENT_OPTR is called immediately after write 1983 * returns, this driver is about 32K samples behind whereas 1984 * 4Front's is about 8K samples behind. Should determine source 1985 * of discrepancy, even if only out of curiosity. 1986 * 1987 * @todo Actually test SNDCTL_DSP_CURRENT_IPTR. 1988 */ 1989 chn = (cmd == SNDCTL_DSP_CURRENT_OPTR) ? wrch : rdch; 1990 if (chn == NULL) 1991 ret = EINVAL; 1992 else { 1993 struct snd_dbuf *bs; 1994 /* int tmp; */ 1995 1996 oss_count_t *oc = (oss_count_t *)arg; 1997 1998 CHN_LOCK(chn); 1999 bs = chn->bufsoft; 2000 #if 0 2001 tmp = (sndbuf_getsize(b) + chn_getptr(chn) - sndbuf_gethwptr(b)) % sndbuf_getsize(b); 2002 oc->samples = (sndbuf_gettotal(b) + tmp) / sndbuf_getalign(b); 2003 oc->fifo_samples = (sndbuf_getready(b) - tmp) / sndbuf_getalign(b); 2004 #else 2005 oc->samples = sndbuf_gettotal(bs) / sndbuf_getalign(bs); 2006 oc->fifo_samples = sndbuf_getready(bs) / sndbuf_getalign(bs); 2007 #endif 2008 CHN_UNLOCK(chn); 2009 } 2010 break; 2011 2012 case SNDCTL_DSP_HALT_OUTPUT: 2013 case SNDCTL_DSP_HALT_INPUT: 2014 chn = (cmd == SNDCTL_DSP_HALT_OUTPUT) ? wrch : rdch; 2015 if (chn == NULL) 2016 ret = EINVAL; 2017 else { 2018 CHN_LOCK(chn); 2019 chn_abort(chn); 2020 CHN_UNLOCK(chn); 2021 } 2022 break; 2023 2024 case SNDCTL_DSP_LOW_WATER: 2025 /* 2026 * Set the number of bytes required to attract attention by 2027 * select/poll. 2028 */ 2029 if (wrch != NULL) { 2030 CHN_LOCK(wrch); 2031 wrch->lw = (*arg_i > 1) ? *arg_i : 1; 2032 CHN_UNLOCK(wrch); 2033 } 2034 if (rdch != NULL) { 2035 CHN_LOCK(rdch); 2036 rdch->lw = (*arg_i > 1) ? *arg_i : 1; 2037 CHN_UNLOCK(rdch); 2038 } 2039 break; 2040 2041 case SNDCTL_DSP_GETERROR: 2042 /* 2043 * OSSv4 docs: "All errors and counters will automatically be 2044 * cleared to zeroes after the call so each call will return only 2045 * the errors that occurred after the previous invocation. ... The 2046 * play_underruns and rec_overrun fields are the only useful fields 2047 * returned by OSS 4.0." 2048 */ 2049 { 2050 audio_errinfo *ei = (audio_errinfo *)arg; 2051 2052 bzero((void *)ei, sizeof(*ei)); 2053 2054 if (wrch != NULL) { 2055 CHN_LOCK(wrch); 2056 ei->play_underruns = wrch->xruns; 2057 wrch->xruns = 0; 2058 CHN_UNLOCK(wrch); 2059 } 2060 if (rdch != NULL) { 2061 CHN_LOCK(rdch); 2062 ei->rec_overruns = rdch->xruns; 2063 rdch->xruns = 0; 2064 CHN_UNLOCK(rdch); 2065 } 2066 } 2067 break; 2068 2069 case SNDCTL_DSP_SYNCGROUP: 2070 PCM_ACQUIRE_QUICK(d); 2071 ret = dsp_oss_syncgroup(wrch, rdch, (oss_syncgroup *)arg); 2072 PCM_RELEASE_QUICK(d); 2073 break; 2074 2075 case SNDCTL_DSP_SYNCSTART: 2076 PCM_ACQUIRE_QUICK(d); 2077 ret = dsp_oss_syncstart(*arg_i); 2078 PCM_RELEASE_QUICK(d); 2079 break; 2080 2081 case SNDCTL_DSP_POLICY: 2082 PCM_ACQUIRE_QUICK(d); 2083 ret = dsp_oss_policy(wrch, rdch, *arg_i); 2084 PCM_RELEASE_QUICK(d); 2085 break; 2086 2087 case SNDCTL_DSP_COOKEDMODE: 2088 PCM_ACQUIRE_QUICK(d); 2089 if (!(dsp_get_flags(i_dev) & SD_F_BITPERFECT)) 2090 ret = dsp_oss_cookedmode(wrch, rdch, *arg_i); 2091 PCM_RELEASE_QUICK(d); 2092 break; 2093 case SNDCTL_DSP_GET_CHNORDER: 2094 PCM_ACQUIRE_QUICK(d); 2095 ret = dsp_oss_getchnorder(wrch, rdch, (unsigned long long *)arg); 2096 PCM_RELEASE_QUICK(d); 2097 break; 2098 case SNDCTL_DSP_SET_CHNORDER: 2099 PCM_ACQUIRE_QUICK(d); 2100 ret = dsp_oss_setchnorder(wrch, rdch, (unsigned long long *)arg); 2101 PCM_RELEASE_QUICK(d); 2102 break; 2103 case SNDCTL_DSP_GETCHANNELMASK: /* XXX vlc */ 2104 PCM_ACQUIRE_QUICK(d); 2105 ret = dsp_oss_getchannelmask(wrch, rdch, (int *)arg); 2106 PCM_RELEASE_QUICK(d); 2107 break; 2108 case SNDCTL_DSP_BIND_CHANNEL: /* XXX what?!? */ 2109 ret = EINVAL; 2110 break; 2111 #ifdef OSSV4_EXPERIMENT 2112 /* 2113 * XXX The following ioctls are not yet supported and just return 2114 * EINVAL. 2115 */ 2116 case SNDCTL_DSP_GETOPEAKS: 2117 case SNDCTL_DSP_GETIPEAKS: 2118 chn = (cmd == SNDCTL_DSP_GETOPEAKS) ? wrch : rdch; 2119 if (chn == NULL) 2120 ret = EINVAL; 2121 else { 2122 oss_peaks_t *op = (oss_peaks_t *)arg; 2123 int lpeak, rpeak; 2124 2125 CHN_LOCK(chn); 2126 ret = chn_getpeaks(chn, &lpeak, &rpeak); 2127 if (ret == -1) 2128 ret = EINVAL; 2129 else { 2130 (*op)[0] = lpeak; 2131 (*op)[1] = rpeak; 2132 } 2133 CHN_UNLOCK(chn); 2134 } 2135 break; 2136 2137 /* 2138 * XXX Once implemented, revisit this for proper cv protection 2139 * (if necessary). 2140 */ 2141 case SNDCTL_GETLABEL: 2142 ret = dsp_oss_getlabel(wrch, rdch, (oss_label_t *)arg); 2143 break; 2144 case SNDCTL_SETLABEL: 2145 ret = dsp_oss_setlabel(wrch, rdch, (oss_label_t *)arg); 2146 break; 2147 case SNDCTL_GETSONG: 2148 ret = dsp_oss_getsong(wrch, rdch, (oss_longname_t *)arg); 2149 break; 2150 case SNDCTL_SETSONG: 2151 ret = dsp_oss_setsong(wrch, rdch, (oss_longname_t *)arg); 2152 break; 2153 case SNDCTL_SETNAME: 2154 ret = dsp_oss_setname(wrch, rdch, (oss_longname_t *)arg); 2155 break; 2156 #if 0 2157 /** 2158 * @note The S/PDIF interface ioctls, @c SNDCTL_DSP_READCTL and 2159 * @c SNDCTL_DSP_WRITECTL have been omitted at the suggestion of 2160 * 4Front Technologies. 2161 */ 2162 case SNDCTL_DSP_READCTL: 2163 case SNDCTL_DSP_WRITECTL: 2164 ret = EINVAL; 2165 break; 2166 #endif /* !0 (explicitly omitted ioctls) */ 2167 2168 #endif /* !OSSV4_EXPERIMENT */ 2169 case SNDCTL_DSP_MAPINBUF: 2170 case SNDCTL_DSP_MAPOUTBUF: 2171 case SNDCTL_DSP_SETSYNCRO: 2172 /* undocumented */ 2173 2174 case SNDCTL_DSP_SUBDIVIDE: 2175 case SOUND_PCM_WRITE_FILTER: 2176 case SOUND_PCM_READ_FILTER: 2177 /* dunno what these do, don't sound important */ 2178 2179 default: 2180 DEB(kprintf("default ioctl fn 0x%08lx fail\n", cmd)); 2181 ret = EINVAL; 2182 break; 2183 } 2184 2185 PCM_GIANT_LEAVE(d); 2186 2187 return (ret); 2188 } 2189 2190 static struct filterops dsp_read_filtops = 2191 { FILTEROP_ISFD, NULL, dsp_filter_detach, dsp_filter_read }; 2192 static struct filterops dsp_write_filtops = 2193 { FILTEROP_ISFD, NULL, dsp_filter_detach, dsp_filter_write }; 2194 2195 static int 2196 /*dsp_poll(struct cdev *i_dev, int events, struct thread *td)*/ 2197 dsp_kqfilter(struct dev_kqfilter_args *ap) 2198 { 2199 struct knote *kn = ap->a_kn; 2200 struct klist *klist; 2201 struct cdev *i_dev = ap->a_head.a_dev; 2202 struct snddev_info *d; 2203 struct pcm_channel *wrch, *rdch; 2204 struct snd_dbuf *bs = NULL; 2205 int ret; 2206 2207 d = dsp_get_info(i_dev); 2208 if (!DSP_REGISTERED(d, i_dev)) 2209 return (EBADF); 2210 2211 PCM_GIANT_ENTER(d); 2212 2213 wrch = NULL; 2214 rdch = NULL; 2215 ret = 0; 2216 2217 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2218 2219 switch (kn->kn_filter) { 2220 case EVFILT_READ: 2221 if (rdch) { 2222 kn->kn_fop = &dsp_read_filtops; 2223 kn->kn_hook = (caddr_t)rdch; 2224 bs = rdch->bufsoft; 2225 ap->a_result = 0; 2226 } 2227 break; 2228 case EVFILT_WRITE: 2229 if (wrch) { 2230 kn->kn_fop = &dsp_write_filtops; 2231 kn->kn_hook = (caddr_t)wrch; 2232 bs = wrch->bufsoft; 2233 ap->a_result = 0; 2234 } 2235 break; 2236 default: 2237 ap->a_result = EOPNOTSUPP; 2238 break; 2239 } 2240 2241 if (ap->a_result == 0) { 2242 klist = &sndbuf_getkq(bs)->ki_note; 2243 knote_insert(klist, kn); 2244 } 2245 2246 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2247 2248 PCM_GIANT_LEAVE(d); 2249 2250 return (ret); 2251 } 2252 2253 static void 2254 dsp_filter_detach(struct knote *kn) 2255 { 2256 struct pcm_channel *ch = (struct pcm_channel *)kn->kn_hook; 2257 struct snd_dbuf *bs = ch->bufsoft; 2258 struct klist *klist; 2259 2260 CHN_LOCK(ch); 2261 klist = &sndbuf_getkq(bs)->ki_note; 2262 knote_remove(klist, kn); 2263 CHN_UNLOCK(ch); 2264 } 2265 2266 static int 2267 dsp_filter_read(struct knote *kn, long hint) 2268 { 2269 struct pcm_channel *rdch = (struct pcm_channel *)kn->kn_hook; 2270 struct thread *td = curthread; 2271 int ready; 2272 2273 CHN_LOCK(rdch); 2274 ready = chn_poll(rdch, 1, td); 2275 CHN_UNLOCK(rdch); 2276 2277 return (ready); 2278 } 2279 2280 static int 2281 dsp_filter_write(struct knote *kn, long hint) 2282 { 2283 struct pcm_channel *wrch = (struct pcm_channel *)kn->kn_hook; 2284 struct thread *td = curthread; 2285 int ready; 2286 2287 CHN_LOCK(wrch); 2288 ready = chn_poll(wrch, 1, td); 2289 CHN_UNLOCK(wrch); 2290 2291 return (ready); 2292 } 2293 2294 static int 2295 dsp_mmap(struct dev_mmap_args *ap) 2296 { 2297 vm_offset_t offset = ap->a_offset; 2298 2299 /* XXX memattr is not honored */ 2300 ap->a_result = vtophys(offset); 2301 return (0); 2302 } 2303 2304 static int 2305 dsp_mmap_single(struct dev_mmap_single_args *ap) 2306 { 2307 struct cdev *i_dev = ap->a_head.a_dev; 2308 vm_ooffset_t *offset = ap->a_offset; 2309 vm_size_t size = ap->a_size; 2310 struct vm_object **object = ap->a_object; 2311 int nprot = ap->a_nprot; 2312 struct snddev_info *d; 2313 struct pcm_channel *wrch, *rdch, *c; 2314 2315 /* 2316 * Reject PROT_EXEC by default. It just doesn't makes sense. 2317 * Unfortunately, we have to give up this one due to linux_mmap 2318 * changes. 2319 * 2320 * http://lists.freebsd.org/pipermail/freebsd-emulation/2007-June/003698.html 2321 * 2322 */ 2323 #ifdef SV_ABI_LINUX 2324 if ((nprot & PROT_EXEC) && (dsp_mmap_allow_prot_exec < 0 || 2325 (dsp_mmap_allow_prot_exec == 0 && 2326 SV_CURPROC_ABI() != SV_ABI_LINUX))) 2327 #else 2328 if ((nprot & PROT_EXEC) && dsp_mmap_allow_prot_exec < 1) 2329 #endif 2330 return (EINVAL); 2331 2332 /* 2333 * PROT_READ (alone) selects the input buffer. 2334 * PROT_WRITE (alone) selects the output buffer. 2335 * PROT_WRITE|PROT_READ together select the output buffer. 2336 */ 2337 if ((nprot & (PROT_READ | PROT_WRITE)) == 0) 2338 return (EINVAL); 2339 2340 d = dsp_get_info(i_dev); 2341 if (!DSP_REGISTERED(d, i_dev)) 2342 return (EINVAL); 2343 2344 PCM_GIANT_ENTER(d); 2345 2346 getchns(i_dev, &rdch, &wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2347 2348 c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch; 2349 if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) || 2350 (*offset + size) > sndbuf_getsize(c->bufsoft) || 2351 (wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) || 2352 (rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) { 2353 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2354 PCM_GIANT_EXIT(d); 2355 return (EINVAL); 2356 } 2357 2358 if (wrch != NULL) 2359 wrch->flags |= CHN_F_MMAP; 2360 if (rdch != NULL) 2361 rdch->flags |= CHN_F_MMAP; 2362 2363 *offset = (uintptr_t)sndbuf_getbufofs(c->bufsoft, *offset); 2364 relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); 2365 *object = dev_pager_alloc(i_dev, size, nprot, *offset); 2366 2367 PCM_GIANT_LEAVE(d); 2368 2369 if (*object == NULL) 2370 return (EINVAL); 2371 return (0); 2372 } 2373 2374 /* 2375 * for i = 0 to channels of device N 2376 * if dspN.i isn't busy and in the right dir, create a dev_t and return it 2377 */ 2378 int 2379 dsp_clone(struct dev_clone_args *ap) 2380 { 2381 struct cdev *i_dev = ap->a_head.a_dev; 2382 struct snddev_info *d; 2383 struct snd_clone_entry *ce; 2384 struct pcm_channel *c; 2385 int i, unit, udcmask, cunit, devtype, devhw, devcmax, tumax; 2386 size_t len; 2387 char sname[64]; 2388 int err = EBUSY; 2389 static struct cdev *dev = NULL; 2390 2391 KASSERT(dsp_umax >= 0 && dsp_cmax >= 0, ("Uninitialized unit!")); 2392 2393 /* 2394 * The default dsp device has a special unit which must be adjusted, 2395 * otherwise the unit number is already correct. 2396 */ 2397 unit = PCMUNIT(i_dev); 2398 if (unit == PCMUNIT_DEFAULT) 2399 unit = snd_unit; 2400 2401 ksnprintf(sname, sizeof(sname), "%s", ap->a_name); 2402 len = strlen(sname); 2403 while (len && sname[len-1] >= '0' && sname[len-1] <= '9') 2404 --len; 2405 sname[len] = 0; 2406 2407 cunit = -1; 2408 devtype = -1; 2409 devhw = 0; 2410 devcmax = -1; 2411 tumax = -1; 2412 2413 for (i = 0; i < sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0]); ++i) { 2414 if (strcmp(dsp_cdevs[i].name, sname) != 0) 2415 continue; 2416 devtype = dsp_cdevs[i].type; 2417 devhw = dsp_cdevs[i].hw; 2418 devcmax = dsp_cdevs[i].max - 1; 2419 break; 2420 } 2421 2422 d = devclass_get_softc(pcm_devclass, unit); 2423 if (!PCM_REGISTERED(d) || d->clones == NULL) { 2424 return (ENODEV); 2425 } 2426 2427 /* XXX Need Giant magic entry ??? */ 2428 2429 PCM_LOCK(d); 2430 if (snd_clone_disabled(d->clones)) { 2431 PCM_UNLOCK(d); 2432 return (ENODEV); 2433 } 2434 2435 PCM_WAIT(d); 2436 PCM_ACQUIRE(d); 2437 PCM_UNLOCK(d); 2438 2439 udcmask = snd_u2unit(unit) | snd_d2unit(devtype); 2440 2441 if (devhw != 0) { 2442 KASSERT(devcmax <= dsp_cmax, 2443 ("overflow: devcmax=%d, dsp_cmax=%d", devcmax, dsp_cmax)); 2444 if (cunit > devcmax) { 2445 PCM_RELEASE_QUICK(d); 2446 return (ENODEV); 2447 } 2448 udcmask |= snd_c2unit(cunit); 2449 CHN_FOREACH(c, d, channels.pcm) { 2450 CHN_LOCK(c); 2451 if (c->unit != udcmask) { 2452 CHN_UNLOCK(c); 2453 continue; 2454 } 2455 CHN_UNLOCK(c); 2456 udcmask &= ~snd_c2unit(cunit); 2457 /* 2458 * Temporarily increase clone maxunit to overcome 2459 * vchan flexibility. 2460 * 2461 * # sysctl dev.pcm.0.play.vchans=256 2462 * dev.pcm.0.play.vchans: 1 -> 256 2463 * # cat /dev/zero > /dev/dsp0.vp255 & 2464 * [1] 17296 2465 * # sysctl dev.pcm.0.play.vchans=0 2466 * dev.pcm.0.play.vchans: 256 -> 1 2467 * # fg 2468 * [1] + running cat /dev/zero > /dev/dsp0.vp255 2469 * ^C 2470 * # cat /dev/zero > /dev/dsp0.vp255 2471 * zsh: operation not supported: /dev/dsp0.vp255 2472 */ 2473 tumax = snd_clone_getmaxunit(d->clones); 2474 if (cunit > tumax) 2475 snd_clone_setmaxunit(d->clones, cunit); 2476 else 2477 tumax = -1; 2478 goto dsp_clone_alloc; 2479 } 2480 /* 2481 * Ok, so we're requesting unallocated vchan, but still 2482 * within maximum vchan limit. 2483 */ 2484 if (((devtype == SND_DEV_DSPHW_VPLAY && d->pvchancount > 0) || 2485 (devtype == SND_DEV_DSPHW_VREC && d->rvchancount > 0)) && 2486 cunit < snd_maxautovchans) { 2487 udcmask &= ~snd_c2unit(cunit); 2488 tumax = snd_clone_getmaxunit(d->clones); 2489 if (cunit > tumax) 2490 snd_clone_setmaxunit(d->clones, cunit); 2491 else 2492 tumax = -1; 2493 goto dsp_clone_alloc; 2494 } 2495 PCM_RELEASE_QUICK(d); 2496 return (err); 2497 } 2498 2499 /* 2500 * Allocate channel, create device if necessary. 2501 */ 2502 dsp_clone_alloc: 2503 ce = snd_clone_alloc(d->clones, &dev, &cunit, udcmask); 2504 if (tumax != -1) 2505 snd_clone_setmaxunit(d->clones, tumax); 2506 if (ce != NULL) { 2507 /* 2508 * NOTE: Subunit is a unique number unrelated to the 2509 * channel id. 2510 */ 2511 udcmask |= snd_c2unit(cunit); 2512 int subunit = devfs_clone_bitmap_get(&DEVFS_CLONE_BITMAP(dsp), 0); 2513 2514 dev = make_only_dev(&dsp_ops, 2515 PCMMKMINOR(unit, devtype, subunit), 2516 UID_ROOT, GID_WHEEL, 0666, "%s%d.%d", 2517 sname, unit, subunit); 2518 snd_clone_register(ce, dev); 2519 err = 0; 2520 } else { 2521 /* 2522 * Use device already registered, we must add a ref to the 2523 * device. 2524 */ 2525 err = 0; 2526 } 2527 2528 ap->a_dev = dev; 2529 2530 PCM_RELEASE_QUICK(d); 2531 2532 return (err); 2533 } 2534 2535 static void 2536 dsp_sysinit(void *p) 2537 { 2538 if (dsp_ehtag != NULL) 2539 return; 2540 /* initialize unit numbering */ 2541 snd_unit_init(); 2542 dsp_umax = PCMMAXUNIT; 2543 dsp_cmax = PCMMAXCHAN; 2544 dsp_ehtag = EVENTHANDLER_REGISTER(dev_clone, dsp_clone, 0, 1000); 2545 2546 devfs_clone_bitmap_init(&DEVFS_CLONE_BITMAP(dsp)); 2547 } 2548 2549 static void 2550 dsp_sysuninit(void *p) 2551 { 2552 if (dsp_ehtag == NULL) 2553 return; 2554 EVENTHANDLER_DEREGISTER(dev_clone, dsp_ehtag); 2555 dsp_ehtag = NULL; 2556 } 2557 2558 SYSINIT(dsp_sysinit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysinit, NULL); 2559 SYSUNINIT(dsp_sysuninit, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, dsp_sysuninit, NULL); 2560 2561 char * 2562 dsp_unit2name(char *buf, size_t len, int unit) 2563 { 2564 int i, dtype; 2565 2566 KASSERT(buf != NULL && len != 0, 2567 ("bogus buf=%p len=%ju", buf, (uintmax_t)len)); 2568 2569 dtype = snd_unit2d(unit); 2570 2571 for (i = 0; i < (sizeof(dsp_cdevs) / sizeof(dsp_cdevs[0])); i++) { 2572 if (dtype != dsp_cdevs[i].type || dsp_cdevs[i].alias != NULL) 2573 continue; 2574 ksnprintf(buf, len, "%s%d%s%d", dsp_cdevs[i].name, 2575 snd_unit2u(unit), dsp_cdevs[i].sep, snd_unit2c(unit)); 2576 return (buf); 2577 } 2578 2579 return (NULL); 2580 } 2581 2582 /** 2583 * @brief Handler for SNDCTL_AUDIOINFO. 2584 * 2585 * Gathers information about the audio device specified in ai->dev. If 2586 * ai->dev == -1, then this function gathers information about the current 2587 * device. If the call comes in on a non-audio device and ai->dev == -1, 2588 * return EINVAL. 2589 * 2590 * This routine is supposed to go practically straight to the hardware, 2591 * getting capabilities directly from the sound card driver, side-stepping 2592 * the intermediate channel interface. 2593 * 2594 * Note, however, that the usefulness of this command is significantly 2595 * decreased when requesting info about any device other than the one serving 2596 * the request. While each snddev_channel refers to a specific device node, 2597 * the converse is *not* true. Currently, when a sound device node is opened, 2598 * the sound subsystem scans for an available audio channel (or channels, if 2599 * opened in read+write) and then assigns them to the si_drv[12] private 2600 * data fields. As a result, any information returned linking a channel to 2601 * a specific character device isn't necessarily accurate. 2602 * 2603 * @note 2604 * Calling threads must not hold any snddev_info or pcm_channel locks. 2605 * 2606 * @param dev device on which the ioctl was issued 2607 * @param ai ioctl request data container 2608 * 2609 * @retval 0 success 2610 * @retval EINVAL ai->dev specifies an invalid device 2611 * 2612 * @todo Verify correctness of Doxygen tags. ;) 2613 */ 2614 int 2615 dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai) 2616 { 2617 struct pcmchan_caps *caps; 2618 struct pcm_channel *ch; 2619 struct snddev_info *d; 2620 uint32_t fmts; 2621 int i, nchan, *rates, minch, maxch; 2622 char *devname, buf[CHN_NAMELEN]; 2623 2624 /* 2625 * If probing the device that received the ioctl, make sure it's a 2626 * DSP device. (Users may use this ioctl with /dev/mixer and 2627 * /dev/midi.) 2628 */ 2629 if (ai->dev == -1 && i_dev->si_ops != &dsp_ops) 2630 return (EINVAL); 2631 2632 ch = NULL; 2633 devname = NULL; 2634 nchan = 0; 2635 bzero(buf, sizeof(buf)); 2636 2637 /* 2638 * Search for the requested audio device (channel). Start by 2639 * iterating over pcm devices. 2640 */ 2641 for (i = 0; pcm_devclass != NULL && 2642 i < devclass_get_maxunit(pcm_devclass); i++) { 2643 d = devclass_get_softc(pcm_devclass, i); 2644 if (!PCM_REGISTERED(d)) 2645 continue; 2646 2647 /* XXX Need Giant magic entry ??? */ 2648 2649 /* See the note in function docblock */ 2650 PCM_UNLOCKASSERT(d); 2651 PCM_LOCK(d); 2652 2653 CHN_FOREACH(ch, d, channels.pcm) { 2654 CHN_UNLOCKASSERT(ch); 2655 CHN_LOCK(ch); 2656 if (ai->dev == -1) { 2657 if (DSP_REGISTERED(d, i_dev) && 2658 (ch == PCM_RDCH(i_dev) || /* record ch */ 2659 ch == PCM_WRCH(i_dev))) { /* playback ch */ 2660 devname = dsp_unit2name(buf, 2661 sizeof(buf), ch->unit); 2662 } 2663 } else if (ai->dev == nchan) { 2664 devname = dsp_unit2name(buf, sizeof(buf), 2665 ch->unit); 2666 } 2667 if (devname != NULL) 2668 break; 2669 CHN_UNLOCK(ch); 2670 ++nchan; 2671 } 2672 2673 if (devname != NULL) { 2674 /* 2675 * At this point, the following synchronization stuff 2676 * has happened: 2677 * - a specific PCM device is locked. 2678 * - a specific audio channel has been locked, so be 2679 * sure to unlock when exiting; 2680 */ 2681 2682 caps = chn_getcaps(ch); 2683 2684 /* 2685 * With all handles collected, zero out the user's 2686 * container and begin filling in its fields. 2687 */ 2688 bzero((void *)ai, sizeof(oss_audioinfo)); 2689 2690 ai->dev = nchan; 2691 strlcpy(ai->name, ch->name, sizeof(ai->name)); 2692 2693 if ((ch->flags & CHN_F_BUSY) == 0) 2694 ai->busy = 0; 2695 else 2696 ai->busy = (ch->direction == PCMDIR_PLAY) ? OPEN_WRITE : OPEN_READ; 2697 2698 /** 2699 * @note 2700 * @c cmd - OSSv4 docs: "Only supported under Linux at 2701 * this moment." Cop-out, I know, but I'll save 2702 * running around in the process table for later. 2703 * Is there a risk of leaking information? 2704 */ 2705 ai->pid = ch->pid; 2706 2707 /* 2708 * These flags stolen from SNDCTL_DSP_GETCAPS handler. 2709 * Note, however, that a single channel operates in 2710 * only one direction, so PCM_CAP_DUPLEX is out. 2711 */ 2712 /** 2713 * @todo @c SNDCTL_AUDIOINFO::caps - Make drivers keep 2714 * these in pcmchan::caps? 2715 */ 2716 ai->caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 2717 ((ch->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 2718 2719 /* 2720 * Collect formats supported @b natively by the 2721 * device. Also determine min/max channels. (I.e., 2722 * mono, stereo, or both?) 2723 * 2724 * If any channel is stereo, maxch = 2; 2725 * if all channels are stereo, minch = 2, too; 2726 * if any channel is mono, minch = 1; 2727 * and if all channels are mono, maxch = 1. 2728 */ 2729 minch = 0; 2730 maxch = 0; 2731 fmts = 0; 2732 for (i = 0; caps->fmtlist[i]; i++) { 2733 fmts |= caps->fmtlist[i]; 2734 if (AFMT_CHANNEL(caps->fmtlist[i]) > 1) { 2735 minch = (minch == 0) ? 2 : minch; 2736 maxch = 2; 2737 } else { 2738 minch = 1; 2739 maxch = (maxch == 0) ? 1 : maxch; 2740 } 2741 } 2742 2743 if (ch->direction == PCMDIR_PLAY) 2744 ai->oformats = fmts; 2745 else 2746 ai->iformats = fmts; 2747 2748 /** 2749 * @note 2750 * @c magic - OSSv4 docs: "Reserved for internal use 2751 * by OSS." 2752 * 2753 * @par 2754 * @c card_number - OSSv4 docs: "Number of the sound 2755 * card where this device belongs or -1 if this 2756 * information is not available. Applications 2757 * should normally not use this field for any 2758 * purpose." 2759 */ 2760 ai->card_number = -1; 2761 /** 2762 * @todo @c song_name - depends first on 2763 * SNDCTL_[GS]ETSONG @todo @c label - depends 2764 * on SNDCTL_[GS]ETLABEL 2765 * @todo @c port_number - routing information? 2766 */ 2767 ai->port_number = -1; 2768 ai->mixer_dev = (d->mixer_dev != NULL) ? PCMUNIT(d->mixer_dev) : -1; 2769 /** 2770 * @note 2771 * @c real_device - OSSv4 docs: "Obsolete." 2772 */ 2773 ai->real_device = -1; 2774 strlcpy(ai->devnode, "/dev/", sizeof(ai->devnode)); 2775 strlcat(ai->devnode, devname, sizeof(ai->devnode)); 2776 ai->enabled = device_is_attached(d->dev) ? 1 : 0; 2777 /** 2778 * @note 2779 * @c flags - OSSv4 docs: "Reserved for future use." 2780 * 2781 * @note 2782 * @c binding - OSSv4 docs: "Reserved for future use." 2783 * 2784 * @todo @c handle - haven't decided how to generate 2785 * this yet; bus, vendor, device IDs? 2786 */ 2787 ai->min_rate = caps->minspeed; 2788 ai->max_rate = caps->maxspeed; 2789 2790 ai->min_channels = minch; 2791 ai->max_channels = maxch; 2792 2793 ai->nrates = chn_getrates(ch, &rates); 2794 if (ai->nrates > OSS_MAX_SAMPLE_RATES) 2795 ai->nrates = OSS_MAX_SAMPLE_RATES; 2796 2797 for (i = 0; i < ai->nrates; i++) 2798 ai->rates[i] = rates[i]; 2799 2800 ai->next_play_engine = 0; 2801 ai->next_rec_engine = 0; 2802 2803 CHN_UNLOCK(ch); 2804 } 2805 2806 PCM_UNLOCK(d); 2807 2808 if (devname != NULL) 2809 return (0); 2810 } 2811 2812 /* Exhausted the search -- nothing is locked, so return. */ 2813 return (EINVAL); 2814 } 2815 2816 /** 2817 * @brief Assigns a PCM channel to a sync group. 2818 * 2819 * Sync groups are used to enable audio operations on multiple devices 2820 * simultaneously. They may be used with any number of devices and may 2821 * span across applications. Devices are added to groups with 2822 * the SNDCTL_DSP_SYNCGROUP ioctl, and operations are triggered with the 2823 * SNDCTL_DSP_SYNCSTART ioctl. 2824 * 2825 * If the @c id field of the @c group parameter is set to zero, then a new 2826 * sync group is created. Otherwise, wrch and rdch (if set) are added to 2827 * the group specified. 2828 * 2829 * @todo As far as memory allocation, should we assume that things are 2830 * okay and allocate with M_WAITOK before acquiring channel locks, 2831 * freeing later if not? 2832 * 2833 * @param wrch output channel associated w/ device (if any) 2834 * @param rdch input channel associated w/ device (if any) 2835 * @param group Sync group parameters 2836 * 2837 * @retval 0 success 2838 * @retval non-zero error to be propagated upstream 2839 */ 2840 static int 2841 dsp_oss_syncgroup(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_syncgroup *group) 2842 { 2843 struct pcmchan_syncmember *smrd, *smwr; 2844 struct pcmchan_syncgroup *sg; 2845 int ret, sg_ids[3]; 2846 2847 smrd = NULL; 2848 smwr = NULL; 2849 sg = NULL; 2850 ret = 0; 2851 2852 /* 2853 * Free_unr() may sleep, so store released syncgroup IDs until after 2854 * all locks are released. 2855 */ 2856 sg_ids[0] = sg_ids[1] = sg_ids[2] = 0; 2857 2858 PCM_SG_LOCK(); 2859 2860 /* 2861 * - Insert channel(s) into group's member list. 2862 * - Set CHN_F_NOTRIGGER on channel(s). 2863 * - Stop channel(s). 2864 */ 2865 2866 /* 2867 * If device's channels are already mapped to a group, unmap them. 2868 */ 2869 if (wrch) { 2870 CHN_LOCK(wrch); 2871 sg_ids[0] = chn_syncdestroy(wrch); 2872 } 2873 2874 if (rdch) { 2875 CHN_LOCK(rdch); 2876 sg_ids[1] = chn_syncdestroy(rdch); 2877 } 2878 2879 /* 2880 * Verify that mode matches character device properites. 2881 * - Bail if PCM_ENABLE_OUTPUT && wrch == NULL. 2882 * - Bail if PCM_ENABLE_INPUT && rdch == NULL. 2883 */ 2884 if (((wrch == NULL) && (group->mode & PCM_ENABLE_OUTPUT)) || 2885 ((rdch == NULL) && (group->mode & PCM_ENABLE_INPUT))) { 2886 ret = EINVAL; 2887 goto out; 2888 } 2889 2890 /* 2891 * An id of zero indicates the user wants to create a new 2892 * syncgroup. 2893 */ 2894 if (group->id == 0) { 2895 sg = (struct pcmchan_syncgroup *)kmalloc(sizeof(*sg), M_DEVBUF, M_WAITOK | M_ZERO); 2896 if (sg != NULL) { 2897 SLIST_INIT(&sg->members); 2898 sg->id = alloc_unr(pcmsg_unrhdr); 2899 2900 group->id = sg->id; 2901 SLIST_INSERT_HEAD(&snd_pcm_syncgroups, sg, link); 2902 } else 2903 ret = ENOMEM; 2904 } else { 2905 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 2906 if (sg->id == group->id) 2907 break; 2908 } 2909 if (sg == NULL) 2910 ret = EINVAL; 2911 } 2912 2913 /* Couldn't create or find a syncgroup. Fail. */ 2914 if (sg == NULL) 2915 goto out; 2916 2917 /* 2918 * Allocate a syncmember, assign it and a channel together, and 2919 * insert into syncgroup. 2920 */ 2921 if (group->mode & PCM_ENABLE_INPUT) { 2922 smrd = (struct pcmchan_syncmember *)kmalloc(sizeof(*smrd), M_DEVBUF, M_WAITOK | M_ZERO); 2923 if (smrd == NULL) { 2924 ret = ENOMEM; 2925 goto out; 2926 } 2927 2928 SLIST_INSERT_HEAD(&sg->members, smrd, link); 2929 smrd->parent = sg; 2930 smrd->ch = rdch; 2931 2932 chn_abort(rdch); 2933 rdch->flags |= CHN_F_NOTRIGGER; 2934 rdch->sm = smrd; 2935 } 2936 2937 if (group->mode & PCM_ENABLE_OUTPUT) { 2938 smwr = (struct pcmchan_syncmember *)kmalloc(sizeof(*smwr), M_DEVBUF, M_WAITOK | M_ZERO); 2939 if (smwr == NULL) { 2940 ret = ENOMEM; 2941 goto out; 2942 } 2943 2944 SLIST_INSERT_HEAD(&sg->members, smwr, link); 2945 smwr->parent = sg; 2946 smwr->ch = wrch; 2947 2948 chn_abort(wrch); 2949 wrch->flags |= CHN_F_NOTRIGGER; 2950 wrch->sm = smwr; 2951 } 2952 2953 2954 out: 2955 if (ret != 0) { 2956 if (smrd != NULL) 2957 kfree(smrd, M_DEVBUF); 2958 if ((sg != NULL) && SLIST_EMPTY(&sg->members)) { 2959 sg_ids[2] = sg->id; 2960 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 2961 kfree(sg, M_DEVBUF); 2962 } 2963 2964 if (wrch) 2965 wrch->sm = NULL; 2966 if (rdch) 2967 rdch->sm = NULL; 2968 } 2969 2970 if (wrch) 2971 CHN_UNLOCK(wrch); 2972 if (rdch) 2973 CHN_UNLOCK(rdch); 2974 2975 PCM_SG_UNLOCK(); 2976 2977 if (sg_ids[0]) 2978 free_unr(pcmsg_unrhdr, sg_ids[0]); 2979 if (sg_ids[1]) 2980 free_unr(pcmsg_unrhdr, sg_ids[1]); 2981 if (sg_ids[2]) 2982 free_unr(pcmsg_unrhdr, sg_ids[2]); 2983 2984 return (ret); 2985 } 2986 2987 /** 2988 * @brief Launch a sync group into action 2989 * 2990 * Sync groups are established via SNDCTL_DSP_SYNCGROUP. This function 2991 * iterates over all members, triggering them along the way. 2992 * 2993 * @note Caller must not hold any channel locks. 2994 * 2995 * @param sg_id sync group identifier 2996 * 2997 * @retval 0 success 2998 * @retval non-zero error worthy of propagating upstream to user 2999 */ 3000 static int 3001 dsp_oss_syncstart(int sg_id) 3002 { 3003 struct pcmchan_syncmember *sm, *sm_tmp; 3004 struct pcmchan_syncgroup *sg; 3005 struct pcm_channel *c; 3006 int ret, needlocks; 3007 3008 /* Get the synclists lock */ 3009 PCM_SG_LOCK(); 3010 3011 do { 3012 ret = 0; 3013 needlocks = 0; 3014 3015 /* Search for syncgroup by ID */ 3016 SLIST_FOREACH(sg, &snd_pcm_syncgroups, link) { 3017 if (sg->id == sg_id) 3018 break; 3019 } 3020 3021 /* Return EINVAL if not found */ 3022 if (sg == NULL) { 3023 ret = EINVAL; 3024 break; 3025 } 3026 3027 /* Any removals resulting in an empty group should've handled this */ 3028 KASSERT(!SLIST_EMPTY(&sg->members), ("found empty syncgroup")); 3029 3030 /* 3031 * Attempt to lock all member channels - if any are already 3032 * locked, unlock those acquired, sleep for a bit, and try 3033 * again. 3034 */ 3035 SLIST_FOREACH(sm, &sg->members, link) { 3036 if (CHN_TRYLOCK(sm->ch) == 0) { 3037 int timo = hz * 5/1000; 3038 if (timo < 1) 3039 timo = 1; 3040 3041 /* Release all locked channels so far, retry */ 3042 SLIST_FOREACH(sm_tmp, &sg->members, link) { 3043 /* sm is the member already locked */ 3044 if (sm == sm_tmp) 3045 break; 3046 CHN_UNLOCK(sm_tmp->ch); 3047 } 3048 3049 /** @todo Is PRIBIO correct/ */ 3050 ret = lksleep(sm, &snd_pcm_syncgroups_mtx, 3051 PCATCH, "pcmsg", timo); 3052 if (ret == EINTR || ret == ERESTART) 3053 break; 3054 3055 needlocks = 1; 3056 ret = 0; /* Assumes ret == EAGAIN... */ 3057 } 3058 } 3059 } while (needlocks && ret == 0); 3060 3061 /* Proceed only if no errors encountered. */ 3062 if (ret == 0) { 3063 /* Launch channels */ 3064 while ((sm = SLIST_FIRST(&sg->members)) != NULL) { 3065 SLIST_REMOVE_HEAD(&sg->members, link); 3066 3067 c = sm->ch; 3068 c->sm = NULL; 3069 chn_start(c, 1); 3070 c->flags &= ~CHN_F_NOTRIGGER; 3071 CHN_UNLOCK(c); 3072 3073 kfree(sm, M_DEVBUF); 3074 } 3075 3076 SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link); 3077 kfree(sg, M_DEVBUF); 3078 } 3079 3080 PCM_SG_UNLOCK(); 3081 3082 /* 3083 * Free_unr() may sleep, so be sure to give up the syncgroup lock 3084 * first. 3085 */ 3086 if (ret == 0) 3087 free_unr(pcmsg_unrhdr, sg_id); 3088 3089 return (ret); 3090 } 3091 3092 /** 3093 * @brief Handler for SNDCTL_DSP_POLICY 3094 * 3095 * The SNDCTL_DSP_POLICY ioctl is a simpler interface to control fragment 3096 * size and count like with SNDCTL_DSP_SETFRAGMENT. Instead of the user 3097 * specifying those two parameters, s/he simply selects a number from 0..10 3098 * which corresponds to a buffer size. Smaller numbers request smaller 3099 * buffers with lower latencies (at greater overhead from more frequent 3100 * interrupts), while greater numbers behave in the opposite manner. 3101 * 3102 * The 4Front spec states that a value of 5 should be the default. However, 3103 * this implementation deviates slightly by using a linear scale without 3104 * consulting drivers. I.e., even though drivers may have different default 3105 * buffer sizes, a policy argument of 5 will have the same result across 3106 * all drivers. 3107 * 3108 * See http://manuals.opensound.com/developer/SNDCTL_DSP_POLICY.html for 3109 * more information. 3110 * 3111 * @todo When SNDCTL_DSP_COOKEDMODE is supported, it'll be necessary to 3112 * work with hardware drivers directly. 3113 * 3114 * @note PCM channel arguments must not be locked by caller. 3115 * 3116 * @param wrch Pointer to opened playback channel (optional; may be NULL) 3117 * @param rdch " recording channel (optional; may be NULL) 3118 * @param policy Integer from [0:10] 3119 * 3120 * @retval 0 constant (for now) 3121 */ 3122 static int 3123 dsp_oss_policy(struct pcm_channel *wrch, struct pcm_channel *rdch, int policy) 3124 { 3125 int ret; 3126 3127 if (policy < CHN_POLICY_MIN || policy > CHN_POLICY_MAX) 3128 return (EIO); 3129 3130 /* Default: success */ 3131 ret = 0; 3132 3133 if (rdch) { 3134 CHN_LOCK(rdch); 3135 ret = chn_setlatency(rdch, policy); 3136 CHN_UNLOCK(rdch); 3137 } 3138 3139 if (wrch && ret == 0) { 3140 CHN_LOCK(wrch); 3141 ret = chn_setlatency(wrch, policy); 3142 CHN_UNLOCK(wrch); 3143 } 3144 3145 if (ret) 3146 ret = EIO; 3147 3148 return (ret); 3149 } 3150 3151 /** 3152 * @brief Enable or disable "cooked" mode 3153 * 3154 * This is a handler for @c SNDCTL_DSP_COOKEDMODE. When in cooked mode, which 3155 * is the default, the sound system handles rate and format conversions 3156 * automatically (ex: user writing 11025Hz/8 bit/unsigned but card only 3157 * operates with 44100Hz/16bit/signed samples). 3158 * 3159 * Disabling cooked mode is intended for applications wanting to mmap() 3160 * a sound card's buffer space directly, bypassing the FreeBSD 2-stage 3161 * feeder architecture, presumably to gain as much control over audio 3162 * hardware as possible. 3163 * 3164 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_COOKEDMODE.html 3165 * for more details. 3166 * 3167 * @param wrch playback channel (optional; may be NULL) 3168 * @param rdch recording channel (optional; may be NULL) 3169 * @param enabled 0 = raw mode, 1 = cooked mode 3170 * 3171 * @retval EINVAL Operation not yet supported. 3172 */ 3173 static int 3174 dsp_oss_cookedmode(struct pcm_channel *wrch, struct pcm_channel *rdch, int enabled) 3175 { 3176 3177 /* 3178 * XXX I just don't get it. Why don't they call it 3179 * "BITPERFECT" ~ SNDCTL_DSP_BITPERFECT !?!?. 3180 * This is just plain so confusing, incoherent, 3181 * <insert any non-printable characters here>. 3182 */ 3183 if (!(enabled == 1 || enabled == 0)) 3184 return (EINVAL); 3185 3186 /* 3187 * I won't give in. I'm inverting its logic here and now. 3188 * Brag all you want, but "BITPERFECT" should be the better 3189 * term here. 3190 */ 3191 enabled ^= 0x00000001; 3192 3193 if (wrch != NULL) { 3194 CHN_LOCK(wrch); 3195 wrch->flags &= ~CHN_F_BITPERFECT; 3196 wrch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3197 CHN_UNLOCK(wrch); 3198 } 3199 3200 if (rdch != NULL) { 3201 CHN_LOCK(rdch); 3202 rdch->flags &= ~CHN_F_BITPERFECT; 3203 rdch->flags |= (enabled != 0) ? CHN_F_BITPERFECT : 0x00000000; 3204 CHN_UNLOCK(rdch); 3205 } 3206 3207 return (0); 3208 } 3209 3210 /** 3211 * @brief Retrieve channel interleaving order 3212 * 3213 * This is the handler for @c SNDCTL_DSP_GET_CHNORDER. 3214 * 3215 * See @c http://manuals.opensound.com/developer/SNDCTL_DSP_GET_CHNORDER.html 3216 * for more details. 3217 * 3218 * @note As the ioctl definition is still under construction, FreeBSD 3219 * does not currently support SNDCTL_DSP_GET_CHNORDER. 3220 * 3221 * @param wrch playback channel (optional; may be NULL) 3222 * @param rdch recording channel (optional; may be NULL) 3223 * @param map channel map (result will be stored there) 3224 * 3225 * @retval EINVAL Operation not yet supported. 3226 */ 3227 static int 3228 dsp_oss_getchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3229 { 3230 struct pcm_channel *ch; 3231 int ret; 3232 3233 ch = (wrch != NULL) ? wrch : rdch; 3234 if (ch != NULL) { 3235 CHN_LOCK(ch); 3236 ret = chn_oss_getorder(ch, map); 3237 CHN_UNLOCK(ch); 3238 } else 3239 ret = EINVAL; 3240 3241 return (ret); 3242 } 3243 3244 /** 3245 * @brief Specify channel interleaving order 3246 * 3247 * This is the handler for @c SNDCTL_DSP_SET_CHNORDER. 3248 * 3249 * @note As the ioctl definition is still under construction, FreeBSD 3250 * does not currently support @c SNDCTL_DSP_SET_CHNORDER. 3251 * 3252 * @param wrch playback channel (optional; may be NULL) 3253 * @param rdch recording channel (optional; may be NULL) 3254 * @param map channel map 3255 * 3256 * @retval EINVAL Operation not yet supported. 3257 */ 3258 static int 3259 dsp_oss_setchnorder(struct pcm_channel *wrch, struct pcm_channel *rdch, unsigned long long *map) 3260 { 3261 int ret; 3262 3263 ret = 0; 3264 3265 if (wrch != NULL) { 3266 CHN_LOCK(wrch); 3267 ret = chn_oss_setorder(wrch, map); 3268 CHN_UNLOCK(wrch); 3269 } 3270 3271 if (ret == 0 && rdch != NULL) { 3272 CHN_LOCK(rdch); 3273 ret = chn_oss_setorder(rdch, map); 3274 CHN_UNLOCK(rdch); 3275 } 3276 3277 return (ret); 3278 } 3279 3280 static int 3281 dsp_oss_getchannelmask(struct pcm_channel *wrch, struct pcm_channel *rdch, 3282 int *mask) 3283 { 3284 struct pcm_channel *ch; 3285 uint32_t chnmask; 3286 int ret; 3287 3288 chnmask = 0; 3289 ch = (wrch != NULL) ? wrch : rdch; 3290 3291 if (ch != NULL) { 3292 CHN_LOCK(ch); 3293 ret = chn_oss_getmask(ch, &chnmask); 3294 CHN_UNLOCK(ch); 3295 } else 3296 ret = EINVAL; 3297 3298 if (ret == 0) 3299 *mask = chnmask; 3300 3301 return (ret); 3302 } 3303 3304 #ifdef OSSV4_EXPERIMENT 3305 /** 3306 * @brief Retrieve an audio device's label 3307 * 3308 * This is a handler for the @c SNDCTL_GETLABEL ioctl. 3309 * 3310 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3311 * for more details. 3312 * 3313 * From Hannu@4Front: "For example ossxmix (just like some HW mixer 3314 * consoles) can show variable "labels" for certain controls. By default 3315 * the application name (say quake) is shown as the label but 3316 * applications may change the labels themselves." 3317 * 3318 * @note As the ioctl definition is still under construction, FreeBSD 3319 * does not currently support @c SNDCTL_GETLABEL. 3320 * 3321 * @param wrch playback channel (optional; may be NULL) 3322 * @param rdch recording channel (optional; may be NULL) 3323 * @param label label gets copied here 3324 * 3325 * @retval EINVAL Operation not yet supported. 3326 */ 3327 static int 3328 dsp_oss_getlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3329 { 3330 return (EINVAL); 3331 } 3332 3333 /** 3334 * @brief Specify an audio device's label 3335 * 3336 * This is a handler for the @c SNDCTL_SETLABEL ioctl. Please see the 3337 * comments for @c dsp_oss_getlabel immediately above. 3338 * 3339 * See @c http://manuals.opensound.com/developer/SNDCTL_GETLABEL.html 3340 * for more details. 3341 * 3342 * @note As the ioctl definition is still under construction, FreeBSD 3343 * does not currently support SNDCTL_SETLABEL. 3344 * 3345 * @param wrch playback channel (optional; may be NULL) 3346 * @param rdch recording channel (optional; may be NULL) 3347 * @param label label gets copied from here 3348 * 3349 * @retval EINVAL Operation not yet supported. 3350 */ 3351 static int 3352 dsp_oss_setlabel(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_label_t *label) 3353 { 3354 return (EINVAL); 3355 } 3356 3357 /** 3358 * @brief Retrieve name of currently played song 3359 * 3360 * This is a handler for the @c SNDCTL_GETSONG ioctl. Audio players could 3361 * tell the system the name of the currently playing song, which would be 3362 * visible in @c /dev/sndstat. 3363 * 3364 * See @c http://manuals.opensound.com/developer/SNDCTL_GETSONG.html 3365 * for more details. 3366 * 3367 * @note As the ioctl definition is still under construction, FreeBSD 3368 * does not currently support SNDCTL_GETSONG. 3369 * 3370 * @param wrch playback channel (optional; may be NULL) 3371 * @param rdch recording channel (optional; may be NULL) 3372 * @param song song name gets copied here 3373 * 3374 * @retval EINVAL Operation not yet supported. 3375 */ 3376 static int 3377 dsp_oss_getsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3378 { 3379 return (EINVAL); 3380 } 3381 3382 /** 3383 * @brief Retrieve name of currently played song 3384 * 3385 * This is a handler for the @c SNDCTL_SETSONG ioctl. Audio players could 3386 * tell the system the name of the currently playing song, which would be 3387 * visible in @c /dev/sndstat. 3388 * 3389 * See @c http://manuals.opensound.com/developer/SNDCTL_SETSONG.html 3390 * for more details. 3391 * 3392 * @note As the ioctl definition is still under construction, FreeBSD 3393 * does not currently support SNDCTL_SETSONG. 3394 * 3395 * @param wrch playback channel (optional; may be NULL) 3396 * @param rdch recording channel (optional; may be NULL) 3397 * @param song song name gets copied from here 3398 * 3399 * @retval EINVAL Operation not yet supported. 3400 */ 3401 static int 3402 dsp_oss_setsong(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *song) 3403 { 3404 return (EINVAL); 3405 } 3406 3407 /** 3408 * @brief Rename a device 3409 * 3410 * This is a handler for the @c SNDCTL_SETNAME ioctl. 3411 * 3412 * See @c http://manuals.opensound.com/developer/SNDCTL_SETNAME.html for 3413 * more details. 3414 * 3415 * From Hannu@4Front: "This call is used to change the device name 3416 * reported in /dev/sndstat and ossinfo. So instead of using some generic 3417 * 'OSS loopback audio (MIDI) driver' the device may be given a meaningfull 3418 * name depending on the current context (for example 'OSS virtual wave table 3419 * synth' or 'VoIP link to London')." 3420 * 3421 * @note As the ioctl definition is still under construction, FreeBSD 3422 * does not currently support SNDCTL_SETNAME. 3423 * 3424 * @param wrch playback channel (optional; may be NULL) 3425 * @param rdch recording channel (optional; may be NULL) 3426 * @param name new device name gets copied from here 3427 * 3428 * @retval EINVAL Operation not yet supported. 3429 */ 3430 static int 3431 dsp_oss_setname(struct pcm_channel *wrch, struct pcm_channel *rdch, oss_longname_t *name) 3432 { 3433 return (EINVAL); 3434 } 3435 #endif /* !OSSV4_EXPERIMENT */ 3436