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