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 getchns(snddev_info *d, int chan, pcm_channel **rdch, pcm_channel **wrch); 37 38 static pcm_channel * 39 allocchn(snddev_info *d, int direction) 40 { 41 pcm_channel *chns = (direction == PCMDIR_PLAY)? d->play : d->rec; 42 int i, cnt = (direction == PCMDIR_PLAY)? d->playcount : d->reccount; 43 for (i = 0; i < cnt; i++) { 44 if (!(chns[i].flags & CHN_F_BUSY)) { 45 chns[i].flags |= CHN_F_BUSY; 46 return &chns[i]; 47 } 48 } 49 return NULL; 50 } 51 52 static int 53 getchns(snddev_info *d, int chan, pcm_channel **rdch, pcm_channel **wrch) 54 { 55 KASSERT((d->flags & SD_F_PRIO_SET) != SD_F_PRIO_SET, \ 56 ("getchns: read and write both prioritised")); 57 58 if ((d->flags & SD_F_SIMPLEX) && (d->flags & SD_F_PRIO_SET)) { 59 *rdch = (d->flags & SD_F_PRIO_RD)? d->arec[chan] : &d->fakechan; 60 *wrch = (d->flags & SD_F_PRIO_WR)? d->aplay[chan] : &d->fakechan; 61 d->fakechan.flags |= CHN_F_BUSY; 62 } else { 63 *rdch = d->arec[chan]; 64 *wrch = d->aplay[chan]; 65 } 66 return 0; 67 } 68 69 static void 70 setchns(snddev_info *d, int chan) 71 { 72 KASSERT((d->flags & SD_F_PRIO_SET) != SD_F_PRIO_SET, \ 73 ("getchns: read and write both prioritised")); 74 d->flags |= SD_F_DIR_SET; 75 if (d->swap) d->swap(d->devinfo, (d->flags & SD_F_PRIO_WR)? PCMDIR_PLAY : PCMDIR_REC); 76 } 77 78 int 79 dsp_open(snddev_info *d, int chan, int oflags, int devtype) 80 { 81 pcm_channel *rdch, *wrch; 82 u_int32_t fmt; 83 84 if (chan >= d->chancount) return ENODEV; 85 if ((d->flags & SD_F_SIMPLEX) && (d->ref[chan] > 0)) return EBUSY; 86 rdch = d->arec[chan]; 87 wrch = d->aplay[chan]; 88 if (oflags & FREAD) { 89 if (rdch == NULL) { 90 rdch = allocchn(d, PCMDIR_REC); 91 if (!rdch) return EBUSY; 92 } else return EBUSY; 93 } 94 if (oflags & FWRITE) { 95 if (wrch == NULL) { 96 wrch = allocchn(d, PCMDIR_PLAY); 97 if (!wrch && (oflags & FREAD)) { 98 rdch->flags &= ~CHN_F_BUSY; 99 return EBUSY; 100 } 101 } else return EBUSY; 102 } 103 d->aplay[chan] = wrch; 104 d->arec[chan] = rdch; 105 d->ref[chan]++; 106 switch (devtype) { 107 case SND_DEV_DSP16: 108 fmt = AFMT_S16_LE; 109 break; 110 111 case SND_DEV_DSP: 112 fmt = AFMT_U8; 113 break; 114 115 case SND_DEV_AUDIO: 116 fmt = AFMT_MU_LAW; 117 break; 118 119 case SND_DEV_NORESET: 120 fmt = 0; 121 break; 122 123 default: 124 return ENXIO; 125 } 126 127 if (rdch && (oflags & FREAD)) { 128 chn_reset(rdch, fmt); 129 if (oflags & O_NONBLOCK) rdch->flags |= CHN_F_NBIO; 130 } 131 if (wrch && (oflags & FWRITE)) { 132 chn_reset(wrch, fmt); 133 if (oflags & O_NONBLOCK) wrch->flags |= CHN_F_NBIO; 134 } 135 return 0; 136 } 137 138 int 139 dsp_close(snddev_info *d, int chan, int devtype) 140 { 141 pcm_channel *rdch, *wrch; 142 143 d->ref[chan]--; 144 if (d->ref[chan]) return 0; 145 d->flags &= ~SD_F_TRANSIENT; 146 rdch = d->arec[chan]; 147 wrch = d->aplay[chan]; 148 149 if (rdch) { 150 chn_abort(rdch); 151 rdch->flags &= ~(CHN_F_BUSY | CHN_F_RUNNING | CHN_F_MAPPED); 152 chn_reset(rdch, 0); 153 } 154 if (wrch) { 155 chn_flush(wrch); 156 wrch->flags &= ~(CHN_F_BUSY | CHN_F_RUNNING | CHN_F_MAPPED); 157 chn_reset(wrch, 0); 158 } 159 d->aplay[chan] = NULL; 160 d->arec[chan] = NULL; 161 return 0; 162 } 163 164 int 165 dsp_read(snddev_info *d, int chan, struct uio *buf, int flag) 166 { 167 pcm_channel *rdch, *wrch; 168 169 if (!(d->flags & SD_F_PRIO_SET)) d->flags |= SD_F_PRIO_RD; 170 if (!(d->flags & SD_F_DIR_SET)) setchns(d, chan); 171 getchns(d, chan, &rdch, &wrch); 172 KASSERT(rdch, ("dsp_read: nonexistant channel")); 173 KASSERT(rdch->flags & CHN_F_BUSY, ("dsp_read: nonbusy channel")); 174 if (rdch->flags & CHN_F_MAPPED) return EINVAL; 175 if (!(rdch->flags & CHN_F_RUNNING)) 176 rdch->flags |= CHN_F_RUNNING; 177 return chn_read(rdch, buf); 178 } 179 180 int 181 dsp_write(snddev_info *d, int chan, struct uio *buf, int flag) 182 { 183 pcm_channel *rdch, *wrch; 184 185 if (!(d->flags & SD_F_PRIO_SET)) d->flags |= SD_F_PRIO_WR; 186 if (!(d->flags & SD_F_DIR_SET)) setchns(d, chan); 187 getchns(d, chan, &rdch, &wrch); 188 KASSERT(wrch, ("dsp_write: nonexistant channel")); 189 KASSERT(wrch->flags & CHN_F_BUSY, ("dsp_write: nonbusy channel")); 190 if (wrch->flags & CHN_F_MAPPED) return EINVAL; 191 if (!(wrch->flags & CHN_F_RUNNING)) 192 wrch->flags |= CHN_F_RUNNING; 193 return chn_write(wrch, buf); 194 } 195 196 int 197 dsp_ioctl(snddev_info *d, int chan, u_long cmd, caddr_t arg) 198 { 199 int ret = 0, *arg_i = (int *)arg; 200 u_long s; 201 pcm_channel *wrch = NULL, *rdch = NULL; 202 203 rdch = d->arec[chan]; 204 wrch = d->aplay[chan]; 205 206 /* 207 * all routines are called with int. blocked. Make sure that 208 * ints are re-enabled when calling slow or blocking functions! 209 */ 210 s = spltty(); 211 switch(cmd) { 212 #ifdef OLDPCM_IOCTL 213 /* 214 * we start with the new ioctl interface. 215 */ 216 case AIONWRITE: /* how many bytes can write ? */ 217 if (wrch && wrch->buffer.dl) 218 while (chn_wrfeed(wrch) > 0); 219 *arg_i = wrch? wrch->buffer2nd.fl : 0; 220 break; 221 222 case AIOSSIZE: /* set the current blocksize */ 223 { 224 struct snd_size *p = (struct snd_size *)arg; 225 if (wrch) 226 chn_setblocksize(wrch, 2, p->play_size); 227 if (rdch) 228 chn_setblocksize(rdch, 2, p->rec_size); 229 } 230 /* FALLTHROUGH */ 231 case AIOGSIZE: /* get the current blocksize */ 232 { 233 struct snd_size *p = (struct snd_size *)arg; 234 if (wrch) p->play_size = wrch->buffer2nd.blksz; 235 if (rdch) p->rec_size = rdch->buffer2nd.blksz; 236 } 237 break; 238 239 case AIOSFMT: 240 { 241 snd_chan_param *p = (snd_chan_param *)arg; 242 if (wrch) { 243 chn_setformat(wrch, p->play_format); 244 chn_setspeed(wrch, p->play_rate); 245 } 246 if (rdch) { 247 chn_setformat(rdch, p->rec_format); 248 chn_setspeed(rdch, p->rec_rate); 249 } 250 } 251 /* FALLTHROUGH */ 252 253 case AIOGFMT: 254 { 255 snd_chan_param *p = (snd_chan_param *)arg; 256 p->play_rate = wrch? wrch->speed : 0; 257 p->rec_rate = rdch? rdch->speed : 0; 258 p->play_format = wrch? wrch->format : 0; 259 p->rec_format = rdch? rdch->format : 0; 260 } 261 break; 262 263 case AIOGCAP: /* get capabilities */ 264 { 265 snd_capabilities *p = (snd_capabilities *)arg; 266 pcmchan_caps *pcaps = NULL, *rcaps = NULL; 267 if (rdch) rcaps = chn_getcaps(rdch); 268 if (wrch) pcaps = chn_getcaps(wrch); 269 p->rate_min = max(rcaps? rcaps->minspeed : 0, 270 pcaps? pcaps->minspeed : 0); 271 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 272 pcaps? pcaps->maxspeed : 1000000); 273 p->bufsize = min(rdch? rdch->buffer2nd.bufsize : 1000000, 274 wrch? wrch->buffer2nd.bufsize : 1000000); 275 /* XXX bad on sb16 */ 276 p->formats = (rcaps? rcaps->formats : 0xffffffff) & 277 (pcaps? pcaps->formats : 0xffffffff); 278 if (rdch && wrch) 279 p->formats |= (d->flags & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 280 p->mixers = 1; /* default: one mixer */ 281 p->inputs = d->mixer.devs; 282 p->left = p->right = 100; 283 } 284 break; 285 286 case AIOSTOP: 287 if (*arg_i == AIOSYNC_PLAY && wrch) *arg_i = chn_abort(wrch); 288 else if (*arg_i == AIOSYNC_CAPTURE && rdch) *arg_i = chn_abort(rdch); 289 else { 290 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 291 *arg_i = 0; 292 } 293 break; 294 295 case AIOSYNC: 296 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 297 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 298 break; 299 #endif 300 /* 301 * here follow the standard ioctls (filio.h etc.) 302 */ 303 case FIONREAD: /* get # bytes to read */ 304 if (rdch && rdch->buffer.dl) 305 while (chn_rdfeed(rdch) > 0); 306 *arg_i = rdch? rdch->buffer2nd.rl : 0; 307 break; 308 309 case FIOASYNC: /*set/clear async i/o */ 310 DEB( printf("FIOASYNC\n") ; ) 311 break; 312 313 case SNDCTL_DSP_NONBLOCK: 314 case FIONBIO: /* set/clear non-blocking i/o */ 315 if (rdch) rdch->flags &= ~CHN_F_NBIO; 316 if (wrch) wrch->flags &= ~CHN_F_NBIO; 317 if (*arg_i) { 318 if (rdch) rdch->flags |= CHN_F_NBIO; 319 if (wrch) wrch->flags |= CHN_F_NBIO; 320 } 321 break; 322 323 /* 324 * Finally, here is the linux-compatible ioctl interface 325 */ 326 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 327 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 328 case SNDCTL_DSP_GETBLKSIZE: 329 if (wrch) 330 *arg_i = wrch->buffer2nd.blksz; 331 else if (rdch) 332 *arg_i = rdch->buffer2nd.blksz; 333 else 334 *arg_i = 0; 335 break ; 336 337 case SNDCTL_DSP_SETBLKSIZE: 338 RANGE(*arg_i, 16, 65536); 339 if (wrch) chn_setblocksize(wrch, 2, *arg_i); 340 if (rdch) chn_setblocksize(rdch, 2, *arg_i); 341 break; 342 343 case SNDCTL_DSP_RESET: 344 DEB(printf("dsp reset\n")); 345 splx(s); 346 if (wrch) chn_abort(wrch); 347 if (rdch) chn_abort(rdch); 348 break; 349 350 case SNDCTL_DSP_SYNC: 351 DEB(printf("dsp sync\n")); 352 splx(s); 353 if (wrch) chn_sync(wrch, wrch->buffer2nd.bufsize - 4); 354 break; 355 356 case SNDCTL_DSP_SPEED: 357 splx(s); 358 if (wrch) 359 ret = chn_setspeed(wrch, *arg_i); 360 if (rdch && ret == 0) 361 ret = chn_setspeed(rdch, *arg_i); 362 /* fallthru */ 363 364 case SOUND_PCM_READ_RATE: 365 *arg_i = wrch? wrch->speed : rdch->speed; 366 break; 367 368 case SNDCTL_DSP_STEREO: 369 splx(s); 370 if (wrch) 371 ret = chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) | 372 ((*arg_i)? AFMT_STEREO : 0)); 373 if (rdch && ret == 0) 374 ret = chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) | 375 ((*arg_i)? AFMT_STEREO : 0)); 376 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 1 : 0; 377 break; 378 379 case SOUND_PCM_WRITE_CHANNELS: 380 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 381 splx(s); 382 if (*arg_i == 1 || *arg_i == 2) { 383 if (wrch) 384 ret = chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) | 385 ((*arg_i == 2)? AFMT_STEREO : 0)); 386 if (rdch && ret == 0) 387 ret = chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) | 388 ((*arg_i == 2)? AFMT_STEREO : 0)); 389 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 2 : 1; 390 } else 391 *arg_i = 0; 392 break; 393 394 case SOUND_PCM_READ_CHANNELS: 395 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 2 : 1; 396 break; 397 398 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 399 *arg_i = wrch? chn_getcaps(wrch)->formats : chn_getcaps(rdch)->formats; 400 break ; 401 402 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 403 splx(s); 404 if (wrch) 405 ret = chn_setformat(wrch, (*arg_i) | (wrch->format & AFMT_STEREO)); 406 if (rdch && ret == 0) 407 ret = chn_setformat(rdch, (*arg_i) | (rdch->format & AFMT_STEREO)); 408 *arg_i = (wrch? wrch->format: rdch->format) & ~AFMT_STEREO; 409 break; 410 411 case SNDCTL_DSP_SUBDIVIDE: 412 /* XXX watch out, this is RW! */ 413 printf("SNDCTL_DSP_SUBDIVIDE unimplemented\n"); 414 break; 415 416 case SNDCTL_DSP_SETFRAGMENT: 417 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 418 { 419 pcm_channel *c = wrch? wrch : rdch; 420 u_int32_t fragln = (*arg_i) & 0x0000ffff; 421 u_int32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 422 u_int32_t fragsz; 423 424 RANGE(fragln, 4, 16); 425 fragsz = 1 << fragln; 426 427 if (maxfrags == 0) 428 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 429 if (maxfrags < 2) { 430 ret = EINVAL; 431 break; 432 } 433 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 434 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 435 436 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 437 if (rdch) 438 ret = chn_setblocksize(rdch, maxfrags, fragsz); 439 if (wrch && ret == 0) 440 ret = chn_setblocksize(wrch, maxfrags, fragsz); 441 442 fragsz = c->buffer2nd.blksz; 443 fragln = 0; 444 while (fragsz > 1) { 445 fragln++; 446 fragsz >>= 1; 447 } 448 *arg_i = (c->buffer2nd.blkcnt << 16) | fragln; 449 } 450 break; 451 452 case SNDCTL_DSP_GETISPACE: /* XXX Space for reading? Makes no sense... */ 453 /* return the size of data available in the input queue */ 454 { 455 audio_buf_info *a = (audio_buf_info *)arg; 456 if (rdch) { 457 snd_dbuf *b = &rdch->buffer; 458 snd_dbuf *bs = &rdch->buffer2nd; 459 if (b->dl && !(rdch->flags & CHN_F_MAPPED)) 460 /* 461 * Suck up the secondary and DMA buffer. 462 * chn_rdfeed*() takes care of the alignment. 463 */ 464 while (chn_rdfeed(rdch) > 0); 465 a->bytes = bs->rl; 466 a->fragments = a->bytes / rdch->buffer2nd.blksz; 467 a->fragstotal = rdch->buffer2nd.blkcnt; 468 a->fragsize = rdch->buffer2nd.blksz; 469 } 470 } 471 break; 472 473 case SNDCTL_DSP_GETOSPACE: 474 /* return space available in the output queue */ 475 { 476 audio_buf_info *a = (audio_buf_info *)arg; 477 if (wrch) { 478 snd_dbuf *b = &wrch->buffer; 479 snd_dbuf *bs = &wrch->buffer2nd; 480 if (b->dl && !(wrch->flags & CHN_F_MAPPED)) { 481 /* 482 * Fill up the secondary and DMA buffer. 483 * chn_wrfeed*() takes care of the alignment. 484 * Check for underflow before writing into the buffers. 485 */ 486 chn_checkunderflow(wrch); 487 while (chn_wrfeed(wrch) > 0); 488 } 489 a->bytes = bs->fl; 490 a->fragments = a->bytes / wrch->buffer2nd.blksz; 491 a->fragstotal = wrch->buffer2nd.blkcnt; 492 a->fragsize = wrch->buffer2nd.blksz; 493 } 494 } 495 break; 496 497 case SNDCTL_DSP_GETIPTR: 498 { 499 count_info *a = (count_info *)arg; 500 if (rdch) { 501 snd_dbuf *b = &rdch->buffer; 502 snd_dbuf *bs = &rdch->buffer2nd; 503 if (b->dl && !(rdch->flags & CHN_F_MAPPED)) 504 /* 505 * Suck up the secondary and DMA buffer. 506 * chn_rdfeed*() takes care of the alignment. 507 */ 508 while (chn_rdfeed(rdch) > 0); 509 a->bytes = bs->total; 510 a->blocks = rdch->blocks; 511 a->ptr = bs->rp; 512 rdch->blocks = 0; 513 } else ret = EINVAL; 514 } 515 break; 516 517 case SNDCTL_DSP_GETOPTR: 518 { 519 count_info *a = (count_info *)arg; 520 if (wrch) { 521 snd_dbuf *b = &wrch->buffer; 522 snd_dbuf *bs = &wrch->buffer2nd; 523 if (b->dl && !(wrch->flags & CHN_F_MAPPED)) { 524 /* 525 * Fill up the secondary and DMA buffer. 526 * chn_wrfeed*() takes care of the alignment. 527 * Check for underflow before writing into the buffers. 528 */ 529 chn_checkunderflow(wrch); 530 while (chn_wrfeed(wrch) > 0); 531 } 532 a->bytes = bs->total; 533 a->blocks = wrch->blocks; 534 a->ptr = bs->rp; 535 wrch->blocks = 0; 536 } else ret = EINVAL; 537 } 538 break; 539 540 case SNDCTL_DSP_GETCAPS: 541 *arg_i = DSP_CAP_REALTIME | DSP_CAP_MMAP | DSP_CAP_TRIGGER; 542 if (rdch && wrch && !(d->flags & SD_F_SIMPLEX)) 543 *arg_i |= DSP_CAP_DUPLEX; 544 break; 545 546 case SOUND_PCM_READ_BITS: 547 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_16BIT)? 16 : 8; 548 break; 549 550 case SNDCTL_DSP_SETTRIGGER: 551 if (rdch) { 552 rdch->flags &= ~(CHN_F_TRIGGERED | CHN_F_NOTRIGGER); 553 if (*arg_i & PCM_ENABLE_INPUT) 554 rdch->flags |= CHN_F_TRIGGERED; 555 else 556 rdch->flags |= CHN_F_NOTRIGGER; 557 chn_intr(rdch); 558 } 559 if (wrch) { 560 wrch->flags &= ~(CHN_F_TRIGGERED | CHN_F_NOTRIGGER); 561 if (*arg_i & PCM_ENABLE_OUTPUT) 562 wrch->flags |= CHN_F_TRIGGERED; 563 else 564 wrch->flags |= CHN_F_NOTRIGGER; 565 chn_intr(wrch); 566 } 567 break; 568 569 case SNDCTL_DSP_GETTRIGGER: 570 *arg_i = 0; 571 if (wrch && wrch->flags & CHN_F_TRIGGERED) 572 *arg_i |= PCM_ENABLE_OUTPUT; 573 if (rdch && rdch->flags & CHN_F_TRIGGERED) 574 *arg_i |= PCM_ENABLE_INPUT; 575 break; 576 577 case SNDCTL_DSP_GETODELAY: 578 if (wrch) { 579 snd_dbuf *b = &wrch->buffer; 580 if (b->dl) { 581 chn_checkunderflow(wrch); 582 if (!(wrch->flags & CHN_F_MAPPED)) 583 while (chn_wrfeed(wrch) > 0); 584 } 585 *arg = b->total; 586 } else 587 ret = EINVAL; 588 break; 589 590 case SNDCTL_DSP_MAPINBUF: 591 case SNDCTL_DSP_MAPOUTBUF: 592 case SNDCTL_DSP_SETSYNCRO: 593 /* undocumented */ 594 595 case SNDCTL_DSP_POST: 596 case SOUND_PCM_WRITE_FILTER: 597 case SOUND_PCM_READ_FILTER: 598 /* dunno what these do, don't sound important */ 599 default: 600 DEB(printf("default ioctl chan%d fn 0x%08lx fail\n", chan, cmd)); 601 ret = EINVAL; 602 break; 603 } 604 splx(s); 605 return ret; 606 } 607 608 int 609 dsp_poll(snddev_info *d, int chan, int events, struct proc *p) 610 { 611 int ret = 0, e; 612 pcm_channel *wrch = NULL, *rdch = NULL; 613 614 getchns(d, chan, &rdch, &wrch); 615 e = events & (POLLOUT | POLLWRNORM); 616 if (wrch && e) ret |= chn_poll(wrch, e, p); 617 e = events & (POLLIN | POLLRDNORM); 618 if (rdch && e) ret |= chn_poll(rdch, e, p); 619 return ret; 620 } 621 622 int 623 dsp_mmap(snddev_info *d, int chan, vm_offset_t offset, int nprot) 624 { 625 pcm_channel *wrch = NULL, *rdch = NULL, *c = NULL; 626 627 getchns(d, chan, &rdch, &wrch); 628 /* XXX this is broken by line 204 of vm/device_pager.c, so force write buffer */ 629 if (1 || (wrch && (nprot & PROT_WRITE))) 630 c = wrch; 631 else if (rdch && (nprot & PROT_READ)) 632 c = rdch; 633 if (c && (c->format == c->buffer.fmt)) { 634 c->flags |= CHN_F_MAPPED; 635 return atop(vtophys(c->buffer2nd.buf + offset)); 636 } else 637 return -1; 638 } 639 640