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 | CHN_F_DEAD))) { 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 } 76 77 int 78 dsp_open(snddev_info *d, int chan, int oflags, int devtype) 79 { 80 pcm_channel *rdch, *wrch; 81 u_int32_t fmt; 82 83 if (chan >= d->chancount) return ENODEV; 84 if ((d->flags & SD_F_SIMPLEX) && (d->ref[chan] > 0)) return EBUSY; 85 if (d->atype[chan] != 0 && d->atype[chan] != devtype) return EBUSY; 86 87 rdch = d->arec[chan]; 88 wrch = d->aplay[chan]; 89 if (oflags & FREAD) { 90 if (rdch == NULL) { 91 rdch = allocchn(d, PCMDIR_REC); 92 if (!rdch) return EBUSY; 93 } else return EBUSY; 94 } 95 if (oflags & FWRITE) { 96 if (wrch == NULL) { 97 wrch = allocchn(d, PCMDIR_PLAY); 98 if (!wrch) { 99 if (rdch && (oflags & FREAD)) 100 rdch->flags &= ~CHN_F_BUSY; 101 return EBUSY; 102 } 103 } else return EBUSY; 104 } 105 d->atype[chan] = devtype; 106 d->aplay[chan] = wrch; 107 d->arec[chan] = rdch; 108 d->ref[chan]++; 109 switch (devtype) { 110 case SND_DEV_DSP16: 111 fmt = AFMT_S16_LE; 112 break; 113 114 case SND_DEV_DSP: 115 fmt = AFMT_U8; 116 break; 117 118 case SND_DEV_AUDIO: 119 fmt = AFMT_MU_LAW; 120 break; 121 122 case SND_DEV_NORESET: 123 fmt = 0; 124 break; 125 126 default: 127 return ENXIO; 128 } 129 130 if (rdch && (oflags & FREAD)) { 131 chn_reset(rdch, fmt); 132 if (oflags & O_NONBLOCK) rdch->flags |= CHN_F_NBIO; 133 } 134 if (wrch && (oflags & FWRITE)) { 135 chn_reset(wrch, fmt); 136 if (oflags & O_NONBLOCK) wrch->flags |= CHN_F_NBIO; 137 } 138 return 0; 139 } 140 141 int 142 dsp_close(snddev_info *d, int chan, int devtype) 143 { 144 pcm_channel *rdch, *wrch; 145 146 d->ref[chan] = 0; 147 #if 0 148 /* enable this if/when every close() is propagated here */ 149 if (d->ref[chan]) return 0; 150 #endif 151 d->flags &= ~SD_F_TRANSIENT; 152 rdch = d->arec[chan]; 153 wrch = d->aplay[chan]; 154 155 if (rdch) { 156 chn_abort(rdch); 157 rdch->flags &= ~(CHN_F_BUSY | CHN_F_RUNNING | CHN_F_MAPPED | CHN_F_DEAD); 158 chn_reset(rdch, 0); 159 } 160 if (wrch) { 161 chn_flush(wrch); 162 wrch->flags &= ~(CHN_F_BUSY | CHN_F_RUNNING | CHN_F_MAPPED | CHN_F_DEAD); 163 chn_reset(wrch, 0); 164 } 165 d->aplay[chan] = NULL; 166 d->arec[chan] = NULL; 167 d->atype[chan] = 0; 168 return 0; 169 } 170 171 int 172 dsp_read(snddev_info *d, int chan, struct uio *buf, int flag) 173 { 174 pcm_channel *rdch, *wrch; 175 176 if (!(d->flags & SD_F_PRIO_SET)) d->flags |= SD_F_PRIO_RD; 177 if (!(d->flags & SD_F_DIR_SET)) setchns(d, chan); 178 getchns(d, chan, &rdch, &wrch); 179 KASSERT(rdch, ("dsp_read: nonexistant channel")); 180 KASSERT(rdch->flags & CHN_F_BUSY, ("dsp_read: nonbusy channel")); 181 if (rdch->flags & (CHN_F_MAPPED | CHN_F_DEAD)) return EINVAL; 182 if (!(rdch->flags & CHN_F_RUNNING)) 183 rdch->flags |= CHN_F_RUNNING; 184 return chn_read(rdch, buf); 185 } 186 187 int 188 dsp_write(snddev_info *d, int chan, struct uio *buf, int flag) 189 { 190 pcm_channel *rdch, *wrch; 191 192 if (!(d->flags & SD_F_PRIO_SET)) d->flags |= SD_F_PRIO_WR; 193 if (!(d->flags & SD_F_DIR_SET)) setchns(d, chan); 194 getchns(d, chan, &rdch, &wrch); 195 KASSERT(wrch, ("dsp_write: nonexistant channel")); 196 KASSERT(wrch->flags & CHN_F_BUSY, ("dsp_write: nonbusy channel")); 197 if (wrch->flags & (CHN_F_MAPPED | CHN_F_DEAD)) return EINVAL; 198 if (!(wrch->flags & CHN_F_RUNNING)) 199 wrch->flags |= CHN_F_RUNNING; 200 return chn_write(wrch, buf); 201 } 202 203 int 204 dsp_ioctl(snddev_info *d, int chan, u_long cmd, caddr_t arg) 205 { 206 int ret = 0, *arg_i = (int *)arg; 207 u_long s; 208 pcm_channel *wrch = NULL, *rdch = NULL; 209 210 rdch = d->arec[chan]; 211 wrch = d->aplay[chan]; 212 213 if (rdch && (rdch->flags & CHN_F_DEAD)) 214 rdch = NULL; 215 if (wrch && (wrch->flags & CHN_F_DEAD)) 216 wrch = NULL; 217 if (!(rdch || wrch)) 218 return EINVAL; 219 /* 220 * all routines are called with int. blocked. Make sure that 221 * ints are re-enabled when calling slow or blocking functions! 222 */ 223 s = spltty(); 224 switch(cmd) { 225 #ifdef OLDPCM_IOCTL 226 /* 227 * we start with the new ioctl interface. 228 */ 229 case AIONWRITE: /* how many bytes can write ? */ 230 if (wrch && wrch->buffer.dl) 231 while (chn_wrfeed(wrch) > 0); 232 *arg_i = wrch? wrch->buffer2nd.fl : 0; 233 break; 234 235 case AIOSSIZE: /* set the current blocksize */ 236 { 237 struct snd_size *p = (struct snd_size *)arg; 238 if (wrch) 239 chn_setblocksize(wrch, 2, p->play_size); 240 if (rdch) 241 chn_setblocksize(rdch, 2, p->rec_size); 242 } 243 /* FALLTHROUGH */ 244 case AIOGSIZE: /* get the current blocksize */ 245 { 246 struct snd_size *p = (struct snd_size *)arg; 247 if (wrch) 248 p->play_size = wrch->buffer2nd.blksz; 249 if (rdch) 250 p->rec_size = rdch->buffer2nd.blksz; 251 } 252 break; 253 254 case AIOSFMT: 255 { 256 snd_chan_param *p = (snd_chan_param *)arg; 257 if (wrch) { 258 chn_setformat(wrch, p->play_format); 259 chn_setspeed(wrch, p->play_rate); 260 } 261 if (rdch) { 262 chn_setformat(rdch, p->rec_format); 263 chn_setspeed(rdch, p->rec_rate); 264 } 265 } 266 /* FALLTHROUGH */ 267 268 case AIOGFMT: 269 { 270 snd_chan_param *p = (snd_chan_param *)arg; 271 p->play_rate = wrch? wrch->speed : 0; 272 p->rec_rate = rdch? rdch->speed : 0; 273 p->play_format = wrch? wrch->format : 0; 274 p->rec_format = rdch? rdch->format : 0; 275 } 276 break; 277 278 case AIOGCAP: /* get capabilities */ 279 { 280 snd_capabilities *p = (snd_capabilities *)arg; 281 pcmchan_caps *pcaps = NULL, *rcaps = NULL; 282 if (rdch) rcaps = chn_getcaps(rdch); 283 if (wrch) pcaps = chn_getcaps(wrch); 284 p->rate_min = max(rcaps? rcaps->minspeed : 0, 285 pcaps? pcaps->minspeed : 0); 286 p->rate_max = min(rcaps? rcaps->maxspeed : 1000000, 287 pcaps? pcaps->maxspeed : 1000000); 288 p->bufsize = min(rdch? rdch->buffer2nd.bufsize : 1000000, 289 wrch? wrch->buffer2nd.bufsize : 1000000); 290 /* XXX bad on sb16 */ 291 p->formats = (rdch? chn_getformats(rdch) : 0xffffffff) & 292 (wrch? chn_getformats(wrch) : 0xffffffff); 293 if (rdch && wrch) 294 p->formats |= (d->flags & SD_F_SIMPLEX)? 0 : AFMT_FULLDUPLEX; 295 p->mixers = 1; /* default: one mixer */ 296 p->inputs = mix_getdevs(d->mixer); 297 p->left = p->right = 100; 298 } 299 break; 300 301 case AIOSTOP: 302 if (*arg_i == AIOSYNC_PLAY && wrch) 303 *arg_i = chn_abort(wrch); 304 else if (*arg_i == AIOSYNC_CAPTURE && rdch) 305 *arg_i = chn_abort(rdch); 306 else { 307 printf("AIOSTOP: bad channel 0x%x\n", *arg_i); 308 *arg_i = 0; 309 } 310 break; 311 312 case AIOSYNC: 313 printf("AIOSYNC chan 0x%03lx pos %lu unimplemented\n", 314 ((snd_sync_parm *)arg)->chan, ((snd_sync_parm *)arg)->pos); 315 break; 316 #endif 317 /* 318 * here follow the standard ioctls (filio.h etc.) 319 */ 320 case FIONREAD: /* get # bytes to read */ 321 if (rdch && rdch->buffer.dl) 322 while (chn_rdfeed(rdch) > 0); 323 *arg_i = rdch? rdch->buffer2nd.rl : 0; 324 break; 325 326 case FIOASYNC: /*set/clear async i/o */ 327 DEB( printf("FIOASYNC\n") ; ) 328 break; 329 330 case SNDCTL_DSP_NONBLOCK: 331 case FIONBIO: /* set/clear non-blocking i/o */ 332 if (rdch) rdch->flags &= ~CHN_F_NBIO; 333 if (wrch) wrch->flags &= ~CHN_F_NBIO; 334 if (*arg_i) { 335 if (rdch) rdch->flags |= CHN_F_NBIO; 336 if (wrch) wrch->flags |= CHN_F_NBIO; 337 } 338 break; 339 340 /* 341 * Finally, here is the linux-compatible ioctl interface 342 */ 343 #define THE_REAL_SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int) 344 case THE_REAL_SNDCTL_DSP_GETBLKSIZE: 345 case SNDCTL_DSP_GETBLKSIZE: 346 if (wrch) 347 *arg_i = wrch->buffer2nd.blksz; 348 else if (rdch) 349 *arg_i = rdch->buffer2nd.blksz; 350 else 351 *arg_i = 0; 352 break ; 353 354 case SNDCTL_DSP_SETBLKSIZE: 355 RANGE(*arg_i, 16, 65536); 356 if (wrch) chn_setblocksize(wrch, 2, *arg_i); 357 if (rdch) chn_setblocksize(rdch, 2, *arg_i); 358 break; 359 360 case SNDCTL_DSP_RESET: 361 DEB(printf("dsp reset\n")); 362 splx(s); 363 if (wrch) chn_abort(wrch); 364 if (rdch) chn_abort(rdch); 365 break; 366 367 case SNDCTL_DSP_SYNC: 368 DEB(printf("dsp sync\n")); 369 splx(s); 370 if (wrch) chn_sync(wrch, wrch->buffer2nd.bufsize - 4); 371 break; 372 373 case SNDCTL_DSP_SPEED: 374 splx(s); 375 if (wrch) 376 ret = chn_setspeed(wrch, *arg_i); 377 if (rdch && ret == 0) 378 ret = chn_setspeed(rdch, *arg_i); 379 /* fallthru */ 380 381 case SOUND_PCM_READ_RATE: 382 *arg_i = wrch? wrch->speed : rdch->speed; 383 break; 384 385 case SNDCTL_DSP_STEREO: 386 splx(s); 387 if (wrch) 388 ret = chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) | 389 ((*arg_i)? AFMT_STEREO : 0)); 390 if (rdch && ret == 0) 391 ret = chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) | 392 ((*arg_i)? AFMT_STEREO : 0)); 393 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 1 : 0; 394 break; 395 396 case SOUND_PCM_WRITE_CHANNELS: 397 /* case SNDCTL_DSP_CHANNELS: ( == SOUND_PCM_WRITE_CHANNELS) */ 398 splx(s); 399 if (*arg_i == 1 || *arg_i == 2) { 400 if (wrch) 401 ret = chn_setformat(wrch, (wrch->format & ~AFMT_STEREO) | 402 ((*arg_i == 2)? AFMT_STEREO : 0)); 403 if (rdch && ret == 0) 404 ret = chn_setformat(rdch, (rdch->format & ~AFMT_STEREO) | 405 ((*arg_i == 2)? AFMT_STEREO : 0)); 406 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 2 : 1; 407 } else 408 *arg_i = 0; 409 break; 410 411 case SOUND_PCM_READ_CHANNELS: 412 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_STEREO)? 2 : 1; 413 break; 414 415 case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */ 416 *arg_i = wrch? chn_getformats(wrch) : chn_getformats(rdch); 417 break ; 418 419 case SNDCTL_DSP_SETFMT: /* sets _one_ format */ 420 splx(s); 421 if ((*arg_i != AFMT_QUERY)) { 422 if (wrch) 423 ret = chn_setformat(wrch, (*arg_i) | (wrch->format & AFMT_STEREO)); 424 if (rdch && ret == 0) 425 ret = chn_setformat(rdch, (*arg_i) | (rdch->format & AFMT_STEREO)); 426 } 427 *arg_i = (wrch? wrch->format : rdch->format) & ~AFMT_STEREO; 428 break; 429 430 case SNDCTL_DSP_SUBDIVIDE: 431 /* XXX watch out, this is RW! */ 432 printf("SNDCTL_DSP_SUBDIVIDE unimplemented\n"); 433 break; 434 435 case SNDCTL_DSP_SETFRAGMENT: 436 DEB(printf("SNDCTL_DSP_SETFRAGMENT 0x%08x\n", *(int *)arg)); 437 { 438 pcm_channel *c = wrch? wrch : rdch; 439 u_int32_t fragln = (*arg_i) & 0x0000ffff; 440 u_int32_t maxfrags = ((*arg_i) & 0xffff0000) >> 16; 441 u_int32_t fragsz; 442 443 RANGE(fragln, 4, 16); 444 fragsz = 1 << fragln; 445 446 if (maxfrags == 0) 447 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 448 if (maxfrags < 2) { 449 ret = EINVAL; 450 break; 451 } 452 if (maxfrags * fragsz > CHN_2NDBUFMAXSIZE) 453 maxfrags = CHN_2NDBUFMAXSIZE / fragsz; 454 455 DEB(printf("SNDCTL_DSP_SETFRAGMENT %d frags, %d sz\n", maxfrags, fragsz)); 456 if (rdch) 457 ret = chn_setblocksize(rdch, maxfrags, fragsz); 458 if (wrch && ret == 0) 459 ret = chn_setblocksize(wrch, maxfrags, fragsz); 460 461 fragsz = c->buffer2nd.blksz; 462 fragln = 0; 463 while (fragsz > 1) { 464 fragln++; 465 fragsz >>= 1; 466 } 467 *arg_i = (c->buffer2nd.blkcnt << 16) | fragln; 468 } 469 break; 470 471 case SNDCTL_DSP_GETISPACE: /* XXX Space for reading? Makes no sense... */ 472 /* return the size of data available in the input queue */ 473 { 474 audio_buf_info *a = (audio_buf_info *)arg; 475 if (rdch) { 476 snd_dbuf *b = &rdch->buffer; 477 snd_dbuf *bs = &rdch->buffer2nd; 478 if (b->dl && !(rdch->flags & CHN_F_MAPPED)) 479 /* 480 * Suck up the secondary and DMA buffer. 481 * chn_rdfeed*() takes care of the alignment. 482 */ 483 while (chn_rdfeed(rdch) > 0); 484 a->bytes = bs->rl; 485 a->fragments = a->bytes / rdch->buffer2nd.blksz; 486 a->fragstotal = rdch->buffer2nd.blkcnt; 487 a->fragsize = rdch->buffer2nd.blksz; 488 } 489 } 490 break; 491 492 case SNDCTL_DSP_GETOSPACE: 493 /* return space available in the output queue */ 494 { 495 audio_buf_info *a = (audio_buf_info *)arg; 496 if (wrch) { 497 snd_dbuf *b = &wrch->buffer; 498 snd_dbuf *bs = &wrch->buffer2nd; 499 if (b->dl && !(wrch->flags & CHN_F_MAPPED)) { 500 /* 501 * Fill up the secondary and DMA buffer. 502 * chn_wrfeed*() takes care of the alignment. 503 * Check for underflow before writing into the buffers. 504 */ 505 chn_checkunderflow(wrch); 506 while (chn_wrfeed(wrch) > 0); 507 } 508 a->bytes = bs->fl; 509 a->fragments = a->bytes / wrch->buffer2nd.blksz; 510 a->fragstotal = wrch->buffer2nd.blkcnt; 511 a->fragsize = wrch->buffer2nd.blksz; 512 } 513 } 514 break; 515 516 case SNDCTL_DSP_GETIPTR: 517 { 518 count_info *a = (count_info *)arg; 519 if (rdch) { 520 snd_dbuf *b = &rdch->buffer; 521 snd_dbuf *bs = &rdch->buffer2nd; 522 if (b->dl && !(rdch->flags & CHN_F_MAPPED)) 523 /* 524 * Suck up the secondary and DMA buffer. 525 * chn_rdfeed*() takes care of the alignment. 526 */ 527 while (chn_rdfeed(rdch) > 0); 528 a->bytes = bs->total; 529 a->blocks = rdch->blocks; 530 a->ptr = bs->rp; 531 rdch->blocks = 0; 532 } else ret = EINVAL; 533 } 534 break; 535 536 case SNDCTL_DSP_GETOPTR: 537 { 538 count_info *a = (count_info *)arg; 539 if (wrch) { 540 snd_dbuf *b = &wrch->buffer; 541 snd_dbuf *bs = &wrch->buffer2nd; 542 if (b->dl && !(wrch->flags & CHN_F_MAPPED)) { 543 /* 544 * Fill up the secondary and DMA buffer. 545 * chn_wrfeed*() takes care of the alignment. 546 * Check for underflow before writing into the buffers. 547 */ 548 chn_checkunderflow(wrch); 549 while (chn_wrfeed(wrch) > 0); 550 } 551 a->bytes = bs->total; 552 a->blocks = wrch->blocks; 553 a->ptr = bs->rp; 554 wrch->blocks = 0; 555 } else ret = EINVAL; 556 } 557 break; 558 559 case SNDCTL_DSP_GETCAPS: 560 *arg_i = DSP_CAP_REALTIME | DSP_CAP_MMAP | DSP_CAP_TRIGGER; 561 if (rdch && wrch && !(d->flags & SD_F_SIMPLEX)) 562 *arg_i |= DSP_CAP_DUPLEX; 563 break; 564 565 case SOUND_PCM_READ_BITS: 566 *arg_i = ((wrch? wrch->format : rdch->format) & AFMT_16BIT)? 16 : 8; 567 break; 568 569 case SNDCTL_DSP_SETTRIGGER: 570 if (rdch) { 571 rdch->flags &= ~(CHN_F_TRIGGERED | CHN_F_NOTRIGGER); 572 if (*arg_i & PCM_ENABLE_INPUT) 573 rdch->flags |= CHN_F_TRIGGERED; 574 else 575 rdch->flags |= CHN_F_NOTRIGGER; 576 chn_intr(rdch); 577 } 578 if (wrch) { 579 wrch->flags &= ~(CHN_F_TRIGGERED | CHN_F_NOTRIGGER); 580 if (*arg_i & PCM_ENABLE_OUTPUT) 581 wrch->flags |= CHN_F_TRIGGERED; 582 else 583 wrch->flags |= CHN_F_NOTRIGGER; 584 chn_intr(wrch); 585 } 586 break; 587 588 case SNDCTL_DSP_GETTRIGGER: 589 *arg_i = 0; 590 if (wrch && wrch->flags & CHN_F_TRIGGERED) 591 *arg_i |= PCM_ENABLE_OUTPUT; 592 if (rdch && rdch->flags & CHN_F_TRIGGERED) 593 *arg_i |= PCM_ENABLE_INPUT; 594 break; 595 596 case SNDCTL_DSP_GETODELAY: 597 if (wrch) { 598 snd_dbuf *b = &wrch->buffer; 599 snd_dbuf *bs = &wrch->buffer2nd; 600 if (b->dl) { 601 chn_checkunderflow(wrch); 602 if (!(wrch->flags & CHN_F_MAPPED)) 603 while (chn_wrfeed(wrch) > 0); 604 } 605 *arg_i = b->rl + bs->rl; 606 } else 607 ret = EINVAL; 608 break; 609 610 case SNDCTL_DSP_POST: 611 if (wrch) { 612 wrch->flags &= ~CHN_F_NOTRIGGER; 613 chn_start(wrch, 1); 614 } 615 break; 616 617 case SNDCTL_DSP_MAPINBUF: 618 case SNDCTL_DSP_MAPOUTBUF: 619 case SNDCTL_DSP_SETSYNCRO: 620 /* undocumented */ 621 622 case SOUND_PCM_WRITE_FILTER: 623 case SOUND_PCM_READ_FILTER: 624 /* dunno what these do, don't sound important */ 625 default: 626 DEB(printf("default ioctl chan%d fn 0x%08lx fail\n", chan, cmd)); 627 ret = EINVAL; 628 break; 629 } 630 splx(s); 631 return ret; 632 } 633 634 int 635 dsp_poll(snddev_info *d, int chan, int events, struct proc *p) 636 { 637 int ret = 0, e; 638 pcm_channel *wrch = NULL, *rdch = NULL; 639 640 getchns(d, chan, &rdch, &wrch); 641 e = events & (POLLOUT | POLLWRNORM); 642 if (wrch && e) ret |= chn_poll(wrch, e, p); 643 e = events & (POLLIN | POLLRDNORM); 644 if (rdch && e) ret |= chn_poll(rdch, e, p); 645 return ret; 646 } 647 648 int 649 dsp_mmap(snddev_info *d, int chan, vm_offset_t offset, int nprot) 650 { 651 pcm_channel *wrch = NULL, *rdch = NULL, *c = NULL; 652 653 getchns(d, chan, &rdch, &wrch); 654 /* XXX this is broken by line 204 of vm/device_pager.c, so force write buffer */ 655 if (1 || (wrch && (nprot & PROT_WRITE))) 656 c = wrch; 657 else if (rdch && (nprot & PROT_READ)) 658 c = rdch; 659 if (c && (c->format == c->buffer.fmt)) { 660 c->flags |= CHN_F_MAPPED; 661 return atop(vtophys(c->buffer2nd.buf + offset)); 662 } else 663 return -1; 664 } 665 666