1 /* 2 * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/queue.h> 31 32 #include <dev/sound/pcm/sound.h> 33 34 #define OLDPCM_IOCTL 35 36 static int 37 getchns(struct snddev_info *d, int chan, struct pcm_channel **rdch, struct pcm_channel **wrch) 38 { 39 KASSERT((d->flags & SD_F_PRIO_SET) != SD_F_PRIO_SET, \ 40 ("getchns: read and write both prioritised")); 41 42 if ((d->flags & SD_F_SIMPLEX) && (d->flags & SD_F_PRIO_SET)) { 43 *rdch = (d->flags & SD_F_PRIO_RD)? d->arec[chan] : d->fakechan; 44 *wrch = (d->flags & SD_F_PRIO_WR)? d->aplay[chan] : d->fakechan; 45 d->fakechan->flags |= CHN_F_BUSY; 46 } else { 47 *rdch = d->arec[chan]; 48 *wrch = d->aplay[chan]; 49 } 50 return 0; 51 } 52 53 static void 54 setchns(struct snddev_info *d, int chan) 55 { 56 KASSERT((d->flags & SD_F_PRIO_SET) != SD_F_PRIO_SET, \ 57 ("getchns: read and write both prioritised")); 58 d->flags |= SD_F_DIR_SET; 59 } 60 61 int 62 dsp_open(struct snddev_info *d, int chan, int oflags, int devtype, pid_t pid) 63 { 64 struct pcm_channel *rdch, *wrch; 65 u_int32_t fmt; 66 67 if (chan >= d->chancount) 68 return ENODEV; 69 if ((d->flags & SD_F_SIMPLEX) && (d->arec[chan] || d->aplay[chan])) 70 return EBUSY; 71 72 rdch = d->arec[chan]; 73 wrch = d->aplay[chan]; 74 75 if (oflags & FREAD) { 76 if (rdch == NULL) { 77 rdch = pcm_chnalloc(d, PCMDIR_REC); 78 if (!rdch) 79 return EBUSY; 80 rdch->pid = pid; 81 } else 82 return EBUSY; 83 } 84 85 if (oflags & FWRITE) { 86 if (wrch == NULL) { 87 wrch = pcm_chnalloc(d, PCMDIR_PLAY); 88 if (!wrch) { 89 if (rdch && (oflags & FREAD)) 90 pcm_chnfree(rdch); 91 return EBUSY; 92 } 93 wrch->pid = pid; 94 } else 95 return EBUSY; 96 } 97 98 if (rdch) { 99 CHN_LOCK(rdch); 100 pcm_chnref(rdch, 1); 101 } 102 if (wrch) { 103 CHN_LOCK(wrch); 104 pcm_chnref(wrch, 1); 105 } 106 107 d->aplay[chan] = wrch; 108 d->arec[chan] = rdch; 109 110 switch (devtype) { 111 case SND_DEV_DSP16: 112 fmt = AFMT_S16_LE; 113 break; 114 115 case SND_DEV_DSP: 116 fmt = AFMT_U8; 117 break; 118 119 case SND_DEV_AUDIO: 120 fmt = AFMT_MU_LAW; 121 break; 122 123 case SND_DEV_NORESET: 124 fmt = 0; 125 break; 126 127 default: 128 return ENXIO; 129 } 130 131 if (rdch && (oflags & FREAD)) { 132 chn_reset(rdch, fmt); 133 if (oflags & O_NONBLOCK) rdch->flags |= CHN_F_NBIO; 134 } 135 if (wrch && (oflags & FWRITE)) { 136 chn_reset(wrch, fmt); 137 if (oflags & O_NONBLOCK) wrch->flags |= CHN_F_NBIO; 138 } 139 if (wrch) 140 CHN_UNLOCK(wrch); 141 if (rdch) 142 CHN_UNLOCK(rdch); 143 return 0; 144 } 145 146 int 147 dsp_close(struct snddev_info *d, int chan, int devtype) 148 { 149 struct pcm_channel *rdch, *wrch; 150 151 rdch = d->arec[chan]; 152 wrch = d->aplay[chan]; 153 154 if (rdch && pcm_chnref(rdch, -1)) 155 return 0; 156 if (wrch && pcm_chnref(wrch, -1)) 157 return 0; 158 159 d->aplay[chan] = NULL; 160 d->arec[chan] = NULL; 161 162 d->flags &= ~SD_F_TRANSIENT; 163 164 if (rdch) { 165 CHN_LOCK(rdch); 166 chn_abort(rdch); 167 rdch->flags &= ~(CHN_F_RUNNING | CHN_F_MAPPED | CHN_F_DEAD); 168 chn_reset(rdch, 0); 169 rdch->pid = -1; 170 pcm_chnfree(rdch); 171 CHN_UNLOCK(rdch); 172 } 173 if (wrch) { 174 CHN_LOCK(wrch); 175 chn_flush(wrch); 176 wrch->flags &= ~(CHN_F_RUNNING | CHN_F_MAPPED | CHN_F_DEAD); 177 chn_reset(wrch, 0); 178 wrch->pid = -1; 179 pcm_chnfree(wrch); 180 CHN_UNLOCK(wrch); 181 } 182 183 return 0; 184 } 185 186 int 187 dsp_read(struct snddev_info *d, int chan, struct uio *buf, int flag) 188 { 189 struct pcm_channel *rdch, *wrch; 190 int ret; 191 192 if (!(d->flags & SD_F_PRIO_SET)) d->flags |= SD_F_PRIO_RD; 193 if (!(d->flags & SD_F_DIR_SET)) setchns(d, chan); 194 195 getchns(d, chan, &rdch, &wrch); 196 CHN_LOCK(rdch); 197 KASSERT(rdch, ("dsp_read: nonexistant channel")); 198 KASSERT(rdch->flags & CHN_F_BUSY, ("dsp_read: nonbusy channel")); 199 200 if (rdch->flags & (CHN_F_MAPPED | CHN_F_DEAD)) { 201 CHN_UNLOCK(rdch); 202 return EINVAL; 203 } 204 if (!(rdch->flags & CHN_F_RUNNING)) 205 rdch->flags |= CHN_F_RUNNING; 206 ret = chn_read(rdch, buf); 207 CHN_UNLOCK(rdch); 208 209 return ret; 210 } 211 212 int 213 dsp_write(struct snddev_info *d, int chan, struct uio *buf, int flag) 214 { 215 struct pcm_channel *rdch, *wrch; 216 int ret; 217 218 if (!(d->flags & SD_F_PRIO_SET)) d->flags |= SD_F_PRIO_WR; 219 if (!(d->flags & SD_F_DIR_SET)) setchns(d, chan); 220 221 getchns(d, chan, &rdch, &wrch); 222 CHN_LOCK(wrch); 223 KASSERT(wrch, ("dsp_write: nonexistant channel")); 224 KASSERT(wrch->flags & CHN_F_BUSY, ("dsp_write: nonbusy channel")); 225 226 if (wrch->flags & (CHN_F_MAPPED | CHN_F_DEAD)) { 227 CHN_UNLOCK(wrch); 228 return EINVAL; 229 } 230 if (!(wrch->flags & CHN_F_RUNNING)) 231 wrch->flags |= CHN_F_RUNNING; 232 ret = chn_write(wrch, buf); 233 CHN_UNLOCK(wrch); 234 235 return ret; 236 } 237 238 int 239 dsp_ioctl(struct snddev_info *d, int chan, u_long cmd, caddr_t arg) 240 { 241 int ret = 0, *arg_i = (int *)arg; 242 u_long s; 243 struct pcm_channel *wrch = NULL, *rdch = NULL; 244 245 rdch = d->arec[chan]; 246 wrch = d->aplay[chan]; 247 248 if (rdch && (rdch->flags & CHN_F_DEAD)) 249 rdch = NULL; 250 if (wrch && (wrch->flags & CHN_F_DEAD)) 251 wrch = NULL; 252 if (!(rdch || wrch)) 253 return EINVAL; 254 255 if (wrch) 256 CHN_LOCK(wrch); 257 if (rdch) 258 CHN_LOCK(rdch); 259 /* 260 * all routines are called with int. blocked. Make sure that 261 * ints are re-enabled when calling slow or blocking functions! 262 */ 263 s = spltty(); 264 switch(cmd) { 265 #ifdef OLDPCM_IOCTL 266 /* 267 * we start with the new ioctl interface. 268 */ 269 case AIONWRITE: /* how many bytes can write ? */ 270 /* 271 if (wrch && wrch->bufhard.dl) 272 while (chn_wrfeed(wrch) == 0); 273 */ 274 *arg_i = wrch? sndbuf_getfree(wrch->bufsoft) : 0; 275 break; 276 277 case AIOSSIZE: /* set the current blocksize */ 278 { 279 struct snd_size *p = (struct snd_size *)arg; 280 if (wrch) 281 chn_setblocksize(wrch, 2, p->play_size); 282 if (rdch) 283 chn_setblocksize(rdch, 2, p->rec_size); 284 } 285 /* FALLTHROUGH */ 286 case AIOGSIZE: /* get the current blocksize */ 287 { 288 struct snd_size *p = (struct snd_size *)arg; 289 if (wrch) 290 p->play_size = sndbuf_getblksz(wrch->bufsoft); 291 if (rdch) 292 p->rec_size = sndbuf_getblksz(rdch->bufsoft); 293 } 294 break; 295 296 case AIOSFMT: 297 { 298 snd_chan_param *p = (snd_chan_param *)arg; 299 if (wrch) { 300 chn_setformat(wrch, p->play_format); 301 chn_setspeed(wrch, p->play_rate); 302 } 303 if (rdch) { 304 chn_setformat(rdch, p->rec_format); 305 chn_setspeed(rdch, p->rec_rate); 306 } 307 } 308 /* FALLTHROUGH */ 309 310 case AIOGFMT: 311 { 312 snd_chan_param *p = (snd_chan_param *)arg; 313 p->play_rate = wrch? wrch->speed : 0; 314 p->rec_rate = rdch? rdch->speed : 0; 315 p->play_format = wrch? wrch->format : 0; 316 p->rec_format = rdch? rdch->format : 0; 317 } 318 break; 319 320 case AIOGCAP: /* get capabilities */ 321 { 322 snd_capabilities *p = (snd_capabilities *)arg; 323 struct pcmchan_caps *pcaps = NULL, *rcaps = NULL; 324 if (rdch) rcaps = chn_getcaps(rdch); 325 if (wrch) pcaps = chn_getcaps(wrch); 326 p->rate_min = max(rcaps? rcaps->minspeed : 0, 327 pcaps? pcaps->minspeed : 0); 328 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 329 pcaps? pcaps->maxspeed : 1000000); 330 p->bufsize = min(rdch? sndbuf_getsize(rdch->bufsoft) : 1000000, 331 wrch? sndbuf_getsize(wrch->bufsoft) : 1000000); 332 /* XXX bad on sb16 */ 333 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 334 (wrch? chn_getformats(wrch) : 0xffffffff); 335 if (rdch && wrch) 336 p->formats |= (d->flags & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 337 p->mixers = 1; /* default: one mixer */ 338 p->inputs = mix_getdevs(d->mixer); 339 p->left = p->right = 100; 340 } 341 break; 342 343 case AIOSTOP: 344 if (*arg_i == AIOSYNC_PLAY && wrch) 345 *arg_i = chn_abort(wrch); 346 else if (*arg_i == AIOSYNC_CAPTURE && rdch) 347 *arg_i = chn_abort(rdch); 348 else { 349 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 350 *arg_i = 0; 351 } 352 break; 353 354 case AIOSYNC: 355 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 356 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 357 break; 358 #endif 359 /* 360 * here follow the standard ioctls (filio.h etc.) 361 */ 362 case FIONREAD: /* get # bytes to read */ 363 /* if (rdch && rdch->bufhard.dl) 364 while (chn_rdfeed(rdch) == 0); 365 */ *arg_i = rdch? sndbuf_getready(rdch->bufsoft) : 0; 366 break; 367 368 case FIOASYNC: /*set/clear async i/o */ 369 DEB( printf("FIOASYNC\n") ; ) 370 break; 371 372 case SNDCTL_DSP_NONBLOCK: 373 case FIONBIO: /* set/clear non-blocking i/o */ 374 if (rdch) rdch->flags &= ~CHN_F_NBIO; 375 if (wrch) wrch->flags &= ~CHN_F_NBIO; 376 if (*arg_i) { 377 if (rdch) rdch->flags |= CHN_F_NBIO; 378 if (wrch) wrch->flags |= CHN_F_NBIO; 379 } 380 break; 381 382 /* 383 * Finally, here is the linux-compatible ioctl interface 384 */ 385 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 386 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 387 case SNDCTL_DSP_GETBLKSIZE: 388 if (wrch) 389 *arg_i = sndbuf_getblksz(wrch->bufsoft); 390 else if (rdch) 391 *arg_i = sndbuf_getblksz(rdch->bufsoft); 392 else 393 *arg_i = 0; 394 break ; 395 396 case SNDCTL_DSP_SETBLKSIZE: 397 RANGE(*arg_i, 16, 65536); 398 if (wrch) chn_setblocksize(wrch, 2, *arg_i); 399 if (rdch) chn_setblocksize(rdch, 2, *arg_i); 400 break; 401 402 case SNDCTL_DSP_RESET: 403 DEB(printf("dsp reset\n")); 404 if (wrch) 405 chn_abort(wrch); 406 if (rdch) 407 chn_abort(rdch); 408 break; 409 410 case SNDCTL_DSP_SYNC: 411 DEB(printf("dsp sync\n")); 412 if (wrch) chn_sync(wrch, sndbuf_getsize(wrch->bufsoft) - 4); 413 break; 414 415 case SNDCTL_DSP_SPEED: 416 if (wrch) 417 ret = chn_setspeed(wrch, *arg_i); 418 if (rdch && ret == 0) 419 ret = chn_setspeed(rdch, *arg_i); 420 /* fallthru */ 421 422 case SOUND_PCM_READ_RATE: 423 *arg_i = wrch? wrch->speed : rdch->speed; 424 break; 425 426 case SNDCTL_DSP_STEREO: 427 if (wrch) 428 ret = chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) | 429 ((*arg_i)? AFMT_STEREO : 0)); 430 if (rdch && ret == 0) 431 ret = chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) | 432 ((*arg_i)? AFMT_STEREO : 0)); 433 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 1 : 0; 434 break; 435 436 case SOUND_PCM_WRITE_CHANNELS: 437 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 438 if (*arg_i == 1 || *arg_i == 2) { 439 if (wrch) 440 ret = chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) | 441 ((*arg_i == 2)? AFMT_STEREO : 0)); 442 if (rdch && ret == 0) 443 ret = chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) | 444 ((*arg_i == 2)? AFMT_STEREO : 0)); 445 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 2 : 1; 446 } else 447 *arg_i = 0; 448 break; 449 450 case SOUND_PCM_READ_CHANNELS: 451 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 2 : 1; 452 break; 453 454 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 455 *arg_i = wrch? chn_getformats(wrch) : chn_getformats(rdch); 456 break ; 457 458 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 459 splx(s); 460 if ((*arg_i != AFMT_QUERY)) { 461 if (wrch) 462 ret = chn_setformat(wrch, (*arg_i) | (wrch->format & AFMT_STEREO)); 463 if (rdch && ret == 0) 464 ret = chn_setformat(rdch, (*arg_i) | (rdch->format & AFMT_STEREO)); 465 } 466 *arg_i = (wrch? wrch->format : rdch->format) & ~AFMT_STEREO; 467 break; 468 469 case SNDCTL_DSP_SETFRAGMENT: 470 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 471 { 472 struct pcm_channel *c = wrch? wrch : rdch; 473 u_int32_t fragln = (*arg_i) & 0x0000ffff; 474 u_int32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 475 u_int32_t fragsz; 476 477 RANGE(fragln, 4, 16); 478 fragsz = 1 << fragln; 479 480 if (maxfrags == 0) 481 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 482 if (maxfrags < 2) { 483 ret = EINVAL; 484 break; 485 } 486 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 487 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 488 489 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 490 if (rdch) 491 ret = chn_setblocksize(rdch, maxfrags, fragsz); 492 if (wrch && ret == 0) 493 ret = chn_setblocksize(wrch, maxfrags, fragsz); 494 495 fragsz = sndbuf_getblksz(c->bufsoft); 496 fragln = 0; 497 while (fragsz > 1) { 498 fragln++; 499 fragsz >>= 1; 500 } 501 *arg_i = (sndbuf_getblkcnt(c->bufsoft) << 16) | fragln; 502 } 503 break; 504 505 case SNDCTL_DSP_GETISPACE: /* XXX Space for reading? Makes no sense... */ 506 /* return the size of data available in the input queue */ 507 { 508 audio_buf_info *a = (audio_buf_info *)arg; 509 if (rdch) { 510 struct snd_dbuf *bs = rdch->bufsoft; 511 512 chn_rdupdate(rdch); 513 a->bytes = sndbuf_getfree(bs); 514 a->fragments = a->bytes / sndbuf_getblksz(bs); 515 a->fragstotal = sndbuf_getblkcnt(bs); 516 a->fragsize = sndbuf_getblksz(bs); 517 } 518 } 519 break; 520 521 case SNDCTL_DSP_GETOSPACE: 522 /* return space available in the output queue */ 523 { 524 audio_buf_info *a = (audio_buf_info *)arg; 525 if (wrch) { 526 struct snd_dbuf *bs = wrch->bufsoft; 527 528 chn_wrupdate(wrch); 529 a->bytes = sndbuf_getfree(bs); 530 a->fragments = a->bytes / sndbuf_getblksz(bs); 531 a->fragstotal = sndbuf_getblkcnt(bs); 532 a->fragsize = sndbuf_getblksz(bs); 533 } 534 } 535 break; 536 537 case SNDCTL_DSP_GETIPTR: 538 { 539 count_info *a = (count_info *)arg; 540 if (rdch) { 541 struct snd_dbuf *bs = rdch->bufsoft; 542 543 chn_rdupdate(rdch); 544 a->bytes = sndbuf_gettotal(bs); 545 a->blocks = sndbuf_getblocks(bs) - rdch->blocks; 546 a->ptr = sndbuf_getreadyptr(bs); 547 rdch->blocks = sndbuf_getblocks(bs); 548 } else ret = EINVAL; 549 } 550 break; 551 552 case SNDCTL_DSP_GETOPTR: 553 { 554 count_info *a = (count_info *)arg; 555 if (wrch) { 556 struct snd_dbuf *bs = wrch->bufsoft; 557 558 chn_wrupdate(wrch); 559 a->bytes = sndbuf_gettotal(bs); 560 a->blocks = sndbuf_getblocks(bs) - wrch->blocks; 561 a->ptr = sndbuf_getreadyptr(bs); 562 wrch->blocks = sndbuf_getblocks(bs); 563 } else ret = EINVAL; 564 } 565 break; 566 567 case SNDCTL_DSP_GETCAPS: 568 *arg_i = DSP_CAP_REALTIME | DSP_CAP_MMAP | DSP_CAP_TRIGGER; 569 if (rdch && wrch && !(d->flags & SD_F_SIMPLEX)) 570 *arg_i |= DSP_CAP_DUPLEX; 571 break; 572 573 case SOUND_PCM_READ_BITS: 574 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_16BIT)? 16 : 8; 575 break; 576 577 case SNDCTL_DSP_SETTRIGGER: 578 if (rdch) { 579 rdch->flags &= ~(CHN_F_TRIGGERED | CHN_F_NOTRIGGER); 580 if (*arg_i & PCM_ENABLE_INPUT) { 581 rdch->flags |= CHN_F_TRIGGERED; 582 chn_start(rdch, 1); 583 } else 584 rdch->flags |= CHN_F_NOTRIGGER; 585 } 586 if (wrch) { 587 wrch->flags &= ~(CHN_F_TRIGGERED | CHN_F_NOTRIGGER); 588 if (*arg_i & PCM_ENABLE_OUTPUT) { 589 wrch->flags |= CHN_F_TRIGGERED; 590 chn_start(wrch, 1); 591 } else 592 wrch->flags |= CHN_F_NOTRIGGER; 593 } 594 break; 595 596 case SNDCTL_DSP_GETTRIGGER: 597 *arg_i = 0; 598 if (wrch && wrch->flags & CHN_F_TRIGGERED) 599 *arg_i |= PCM_ENABLE_OUTPUT; 600 if (rdch && rdch->flags & CHN_F_TRIGGERED) 601 *arg_i |= PCM_ENABLE_INPUT; 602 break; 603 604 case SNDCTL_DSP_GETODELAY: 605 if (wrch) { 606 struct snd_dbuf *b = wrch->bufhard; 607 struct snd_dbuf *bs = wrch->bufsoft; 608 609 chn_wrupdate(wrch); 610 *arg_i = sndbuf_getready(b) + sndbuf_getready(bs); 611 } else 612 ret = EINVAL; 613 break; 614 615 case SNDCTL_DSP_POST: 616 if (wrch) { 617 wrch->flags &= ~CHN_F_NOTRIGGER; 618 chn_start(wrch, 1); 619 } 620 break; 621 622 case SNDCTL_DSP_MAPINBUF: 623 case SNDCTL_DSP_MAPOUTBUF: 624 case SNDCTL_DSP_SETSYNCRO: 625 /* undocumented */ 626 627 case SNDCTL_DSP_SUBDIVIDE: 628 case SOUND_PCM_WRITE_FILTER: 629 case SOUND_PCM_READ_FILTER: 630 /* dunno what these do, don't sound important */ 631 default: 632 DEB(printf("default ioctl chan%d fn 0x%08lx fail\n", chan, cmd)); 633 ret = EINVAL; 634 break; 635 } 636 if (rdch) 637 CHN_UNLOCK(rdch); 638 if (wrch) 639 CHN_UNLOCK(wrch); 640 return ret; 641 } 642 643 int 644 dsp_poll(struct snddev_info *d, int chan, int events, struct proc *p) 645 { 646 int ret = 0, e; 647 struct pcm_channel *wrch = NULL, *rdch = NULL; 648 649 getchns(d, chan, &rdch, &wrch); 650 651 e = events & (POLLOUT | POLLWRNORM); 652 if (wrch && e) ret |= chn_poll(wrch, e, p); 653 654 e = events & (POLLIN | POLLRDNORM); 655 if (rdch && e) ret |= chn_poll(rdch, e, p); 656 657 return ret; 658 } 659 660 int 661 dsp_mmap(struct snddev_info *d, int chan, vm_offset_t offset, int nprot) 662 { 663 struct pcm_channel *wrch = NULL, *rdch = NULL, *c = NULL; 664 int ret; 665 666 getchns(d, chan, &rdch, &wrch); 667 #if 0 668 /* 669 * XXX the linux api uses the nprot to select read/write bufhard 670 * our vm system doesn't allow this, so force write bufhard 671 */ 672 673 if (1 || (wrch && (nprot & PROT_WRITE))) 674 c = wrch; 675 else if (rdch && (nprot & PROT_READ)) 676 c = rdch; 677 #else 678 c = wrch; 679 #endif 680 681 if (c == NULL) 682 return -1; 683 CHN_LOCK(c); 684 c->flags |= CHN_F_MAPPED; 685 ret = atop(vtophys(((char *)sndbuf_getbuf(c->bufsoft)) + offset)); 686 CHN_UNLOCK(c); 687 return ret; 688 } 689 690