1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 5 * Copyright (c) 2001 Cameron Grant <cg@FreeBSD.org> 6 * Copyright (c) 2020 The FreeBSD Foundation 7 * All rights reserved. 8 * Copyright (c) 2024-2025 The FreeBSD Foundation 9 * 10 * Portions of this software were developed by Christos Margiolis 11 * <christos@FreeBSD.org> under sponsorship from the FreeBSD Foundation. 12 * 13 * Portions of this software were developed by Ka Ho Ng 14 * under sponsorship from the FreeBSD Foundation. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38 #ifdef HAVE_KERNEL_OPTION_HEADERS 39 #include "opt_snd.h" 40 #endif 41 42 #include <sys/param.h> 43 #include <sys/dnv.h> 44 #include <sys/lock.h> 45 #include <sys/malloc.h> 46 #include <sys/nv.h> 47 #include <sys/sndstat.h> 48 #include <sys/sx.h> 49 50 #include <dev/sound/pcm/sound.h> 51 #include <dev/sound/sndstat.h> 52 53 #include "feeder_if.h" 54 55 static d_open_t sndstat_open; 56 static void sndstat_close(void *); 57 static d_read_t sndstat_read; 58 static d_write_t sndstat_write; 59 static d_ioctl_t sndstat_ioctl; 60 61 static struct cdevsw sndstat_cdevsw = { 62 .d_version = D_VERSION, 63 .d_open = sndstat_open, 64 .d_read = sndstat_read, 65 .d_write = sndstat_write, 66 .d_ioctl = sndstat_ioctl, 67 .d_name = "sndstat", 68 .d_flags = D_TRACKCLOSE, 69 }; 70 71 struct sndstat_entry { 72 TAILQ_ENTRY(sndstat_entry) link; 73 device_t dev; 74 char *str; 75 enum sndstat_type type; 76 int unit; 77 }; 78 79 struct sndstat_userdev { 80 TAILQ_ENTRY(sndstat_userdev) link; 81 char *provider; 82 char *nameunit; 83 char *devnode; 84 char *desc; 85 unsigned int pchan; 86 unsigned int rchan; 87 struct { 88 uint32_t min_rate; 89 uint32_t max_rate; 90 uint32_t formats; 91 uint32_t min_chn; 92 uint32_t max_chn; 93 } info_play, info_rec; 94 nvlist_t *provider_nvl; 95 }; 96 97 struct sndstat_file { 98 TAILQ_ENTRY(sndstat_file) entry; 99 struct sbuf sbuf; 100 struct sx lock; 101 void *devs_nvlbuf; /* (l) */ 102 size_t devs_nbytes; /* (l) */ 103 TAILQ_HEAD(, sndstat_userdev) userdev_list; /* (l) */ 104 int out_offset; 105 int in_offset; 106 int fflags; 107 }; 108 109 static struct sx sndstat_lock; 110 static struct cdev *sndstat_dev; 111 112 #define SNDSTAT_LOCK() sx_xlock(&sndstat_lock) 113 #define SNDSTAT_UNLOCK() sx_xunlock(&sndstat_lock) 114 115 static TAILQ_HEAD(, sndstat_entry) sndstat_devlist = TAILQ_HEAD_INITIALIZER(sndstat_devlist); 116 static TAILQ_HEAD(, sndstat_file) sndstat_filelist = TAILQ_HEAD_INITIALIZER(sndstat_filelist); 117 118 int snd_verbose = 0; 119 120 static int sndstat_prepare(struct sndstat_file *); 121 static struct sndstat_userdev * 122 sndstat_line2userdev(struct sndstat_file *, const char *, int); 123 124 static int 125 sysctl_hw_sndverbose(SYSCTL_HANDLER_ARGS) 126 { 127 int error, verbose; 128 129 verbose = snd_verbose; 130 error = sysctl_handle_int(oidp, &verbose, 0, req); 131 if (error == 0 && req->newptr != NULL) { 132 if (verbose < 0 || verbose > 4) 133 error = EINVAL; 134 else 135 snd_verbose = verbose; 136 } 137 return (error); 138 } 139 SYSCTL_PROC(_hw_snd, OID_AUTO, verbose, 140 CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 0, sizeof(int), 141 sysctl_hw_sndverbose, "I", 142 "verbosity level"); 143 144 static int 145 sndstat_open(struct cdev *i_dev, int flags, int mode, struct thread *td) 146 { 147 struct sndstat_file *pf; 148 149 pf = malloc(sizeof(*pf), M_DEVBUF, M_WAITOK | M_ZERO); 150 151 sbuf_new(&pf->sbuf, NULL, 4096, SBUF_AUTOEXTEND); 152 153 pf->fflags = flags; 154 TAILQ_INIT(&pf->userdev_list); 155 sx_init(&pf->lock, "sndstat_file"); 156 157 SNDSTAT_LOCK(); 158 TAILQ_INSERT_TAIL(&sndstat_filelist, pf, entry); 159 SNDSTAT_UNLOCK(); 160 161 devfs_set_cdevpriv(pf, &sndstat_close); 162 163 return (0); 164 } 165 166 /* 167 * Should only be called either when: 168 * * Closing 169 * * pf->lock held 170 */ 171 static void 172 sndstat_remove_all_userdevs(struct sndstat_file *pf) 173 { 174 struct sndstat_userdev *ud; 175 176 KASSERT( 177 sx_xlocked(&pf->lock), ("%s: Called without pf->lock", __func__)); 178 while ((ud = TAILQ_FIRST(&pf->userdev_list)) != NULL) { 179 TAILQ_REMOVE(&pf->userdev_list, ud, link); 180 free(ud->provider, M_DEVBUF); 181 free(ud->desc, M_DEVBUF); 182 free(ud->devnode, M_DEVBUF); 183 free(ud->nameunit, M_DEVBUF); 184 nvlist_destroy(ud->provider_nvl); 185 free(ud, M_DEVBUF); 186 } 187 } 188 189 static void 190 sndstat_close(void *sndstat_file) 191 { 192 struct sndstat_file *pf = (struct sndstat_file *)sndstat_file; 193 194 SNDSTAT_LOCK(); 195 sbuf_delete(&pf->sbuf); 196 TAILQ_REMOVE(&sndstat_filelist, pf, entry); 197 SNDSTAT_UNLOCK(); 198 199 free(pf->devs_nvlbuf, M_NVLIST); 200 sx_xlock(&pf->lock); 201 sndstat_remove_all_userdevs(pf); 202 sx_xunlock(&pf->lock); 203 sx_destroy(&pf->lock); 204 205 free(pf, M_DEVBUF); 206 } 207 208 static int 209 sndstat_read(struct cdev *i_dev, struct uio *buf, int flag) 210 { 211 struct sndstat_file *pf; 212 int err; 213 int len; 214 215 err = devfs_get_cdevpriv((void **)&pf); 216 if (err != 0) 217 return (err); 218 219 /* skip zero-length reads */ 220 if (buf->uio_resid == 0) 221 return (0); 222 223 SNDSTAT_LOCK(); 224 if (pf->out_offset != 0) { 225 /* don't allow both reading and writing */ 226 err = EINVAL; 227 goto done; 228 } else if (pf->in_offset == 0) { 229 err = sndstat_prepare(pf); 230 if (err <= 0) { 231 err = ENOMEM; 232 goto done; 233 } 234 } 235 len = sbuf_len(&pf->sbuf) - pf->in_offset; 236 if (len > buf->uio_resid) 237 len = buf->uio_resid; 238 if (len > 0) 239 err = uiomove(sbuf_data(&pf->sbuf) + pf->in_offset, len, buf); 240 pf->in_offset += len; 241 done: 242 SNDSTAT_UNLOCK(); 243 return (err); 244 } 245 246 static int 247 sndstat_write(struct cdev *i_dev, struct uio *buf, int flag) 248 { 249 struct sndstat_file *pf; 250 uint8_t temp[64]; 251 int err; 252 int len; 253 254 err = devfs_get_cdevpriv((void **)&pf); 255 if (err != 0) 256 return (err); 257 258 /* skip zero-length writes */ 259 if (buf->uio_resid == 0) 260 return (0); 261 262 /* don't allow writing more than 64Kbytes */ 263 if (buf->uio_resid > 65536) 264 return (ENOMEM); 265 266 SNDSTAT_LOCK(); 267 if (pf->in_offset != 0) { 268 /* don't allow both reading and writing */ 269 err = EINVAL; 270 } else { 271 /* only remember the last write - allows for updates */ 272 sx_xlock(&pf->lock); 273 sndstat_remove_all_userdevs(pf); 274 sx_xunlock(&pf->lock); 275 276 while (1) { 277 len = sizeof(temp); 278 if (len > buf->uio_resid) 279 len = buf->uio_resid; 280 if (len > 0) { 281 err = uiomove(temp, len, buf); 282 if (err) 283 break; 284 } else { 285 break; 286 } 287 if (sbuf_bcat(&pf->sbuf, temp, len) < 0) { 288 err = ENOMEM; 289 break; 290 } 291 } 292 sbuf_finish(&pf->sbuf); 293 294 if (err == 0) { 295 char *line, *str; 296 297 str = sbuf_data(&pf->sbuf); 298 while ((line = strsep(&str, "\n")) != NULL) { 299 struct sndstat_userdev *ud; 300 301 ud = sndstat_line2userdev(pf, line, strlen(line)); 302 if (ud == NULL) 303 continue; 304 305 sx_xlock(&pf->lock); 306 TAILQ_INSERT_TAIL(&pf->userdev_list, ud, link); 307 sx_xunlock(&pf->lock); 308 } 309 310 pf->out_offset = sbuf_len(&pf->sbuf); 311 } else 312 pf->out_offset = 0; 313 314 sbuf_clear(&pf->sbuf); 315 } 316 SNDSTAT_UNLOCK(); 317 return (err); 318 } 319 320 static void 321 sndstat_get_caps(struct snddev_info *d, int dir, uint32_t *min_rate, 322 uint32_t *max_rate, uint32_t *fmts, uint32_t *minchn, uint32_t *maxchn) 323 { 324 struct pcm_channel *c; 325 struct pcmchan_caps *caps; 326 int i; 327 328 *fmts = 0; 329 *min_rate = UINT32_MAX; 330 *max_rate = 0; 331 *minchn = UINT32_MAX; 332 *maxchn = 0; 333 334 CHN_FOREACH(c, d, channels.pcm) { 335 if (c->direction != dir) 336 continue; 337 CHN_LOCK(c); 338 caps = chn_getcaps(c); 339 for (i = 0; caps->fmtlist[i]; i++) { 340 *fmts |= AFMT_ENCODING(caps->fmtlist[i]); 341 *minchn = min(AFMT_CHANNEL(caps->fmtlist[i]), *minchn); 342 *maxchn = max(AFMT_CHANNEL(caps->fmtlist[i]), *maxchn); 343 } 344 if ((c->flags & CHN_F_EXCLUSIVE) || 345 (pcm_getflags(d->dev) & SD_F_BITPERFECT)) { 346 *min_rate = min(*min_rate, caps->minspeed); 347 *max_rate = max(*max_rate, caps->maxspeed); 348 } else { 349 *min_rate = min(*min_rate, feeder_rate_min); 350 *max_rate = max(*max_rate, feeder_rate_max); 351 } 352 CHN_UNLOCK(c); 353 } 354 if (*min_rate == UINT32_MAX) 355 *min_rate = 0; 356 if (*minchn == UINT32_MAX) 357 *minchn = 0; 358 } 359 360 static nvlist_t * 361 sndstat_create_diinfo_nv(uint32_t min_rate, uint32_t max_rate, uint32_t formats, 362 uint32_t min_chn, uint32_t max_chn) 363 { 364 nvlist_t *nv; 365 366 nv = nvlist_create(0); 367 if (nv == NULL) 368 return (NULL); 369 nvlist_add_number(nv, SNDST_DSPS_INFO_MIN_RATE, min_rate); 370 nvlist_add_number(nv, SNDST_DSPS_INFO_MAX_RATE, max_rate); 371 nvlist_add_number(nv, SNDST_DSPS_INFO_FORMATS, formats); 372 nvlist_add_number(nv, SNDST_DSPS_INFO_MIN_CHN, min_chn); 373 nvlist_add_number(nv, SNDST_DSPS_INFO_MAX_CHN, max_chn); 374 return (nv); 375 } 376 377 static int 378 sndstat_build_sound4_nvlist(struct snddev_info *d, nvlist_t **dip) 379 { 380 struct pcm_channel *c; 381 struct pcm_feeder *f; 382 struct sbuf sb; 383 uint32_t maxrate, minrate, fmts, minchn, maxchn, caps; 384 nvlist_t *di = NULL, *sound4di = NULL, *diinfo = NULL, *cdi = NULL; 385 int err, nchan; 386 char buf[AFMTSTR_LEN]; 387 388 di = nvlist_create(0); 389 if (di == NULL) { 390 err = ENOMEM; 391 goto done; 392 } 393 sound4di = nvlist_create(0); 394 if (sound4di == NULL) { 395 err = ENOMEM; 396 goto done; 397 } 398 399 nvlist_add_bool(di, SNDST_DSPS_FROM_USER, false); 400 nvlist_add_stringf(di, SNDST_DSPS_NAMEUNIT, "%s", 401 device_get_nameunit(d->dev)); 402 nvlist_add_stringf(di, SNDST_DSPS_DEVNODE, "dsp%d", 403 device_get_unit(d->dev)); 404 nvlist_add_string( 405 di, SNDST_DSPS_DESC, device_get_desc(d->dev)); 406 407 PCM_ACQUIRE_QUICK(d); 408 nvlist_add_number(di, SNDST_DSPS_PCHAN, d->playcount); 409 nvlist_add_number(di, SNDST_DSPS_RCHAN, d->reccount); 410 if (d->playcount > 0) { 411 sndstat_get_caps(d, PCMDIR_PLAY, &minrate, &maxrate, &fmts, 412 &minchn, &maxchn); 413 nvlist_add_number(di, "pminrate", minrate); 414 nvlist_add_number(di, "pmaxrate", maxrate); 415 nvlist_add_number(di, "pfmts", fmts); 416 diinfo = sndstat_create_diinfo_nv(minrate, maxrate, fmts, 417 minchn, maxchn); 418 if (diinfo == NULL) 419 nvlist_set_error(di, ENOMEM); 420 else 421 nvlist_move_nvlist(di, SNDST_DSPS_INFO_PLAY, diinfo); 422 } 423 if (d->reccount > 0) { 424 sndstat_get_caps(d, PCMDIR_REC, &minrate, &maxrate, &fmts, 425 &minchn, &maxchn); 426 nvlist_add_number(di, "rminrate", minrate); 427 nvlist_add_number(di, "rmaxrate", maxrate); 428 nvlist_add_number(di, "rfmts", fmts); 429 diinfo = sndstat_create_diinfo_nv(minrate, maxrate, fmts, 430 minchn, maxchn); 431 if (diinfo == NULL) 432 nvlist_set_error(di, ENOMEM); 433 else 434 nvlist_move_nvlist(di, SNDST_DSPS_INFO_REC, diinfo); 435 } 436 437 nvlist_add_number(sound4di, SNDST_DSPS_SOUND4_UNIT, 438 device_get_unit(d->dev)); // XXX: I want signed integer here 439 nvlist_add_string(sound4di, SNDST_DSPS_SOUND4_STATUS, d->status); 440 nvlist_add_bool( 441 sound4di, SNDST_DSPS_SOUND4_BITPERFECT, d->flags & SD_F_BITPERFECT); 442 nvlist_add_bool(sound4di, SNDST_DSPS_SOUND4_PVCHAN, 443 d->flags & SD_F_PVCHANS); 444 nvlist_add_number(sound4di, SNDST_DSPS_SOUND4_PVCHANRATE, 445 d->pvchanrate); 446 nvlist_add_number(sound4di, SNDST_DSPS_SOUND4_PVCHANFORMAT, 447 d->pvchanformat); 448 nvlist_add_bool(sound4di, SNDST_DSPS_SOUND4_RVCHAN, 449 d->flags & SD_F_RVCHANS); 450 nvlist_add_number(sound4di, SNDST_DSPS_SOUND4_RVCHANRATE, 451 d->rvchanrate); 452 nvlist_add_number(sound4di, SNDST_DSPS_SOUND4_RVCHANFORMAT, 453 d->rvchanformat); 454 455 nchan = 0; 456 CHN_FOREACH(c, d, channels.pcm) { 457 sbuf_new(&sb, NULL, 4096, SBUF_AUTOEXTEND); 458 cdi = nvlist_create(0); 459 if (cdi == NULL) { 460 sbuf_delete(&sb); 461 PCM_RELEASE_QUICK(d); 462 err = ENOMEM; 463 goto done; 464 } 465 466 CHN_LOCK(c); 467 468 caps = PCM_CAP_REALTIME | PCM_CAP_MMAP | PCM_CAP_TRIGGER | 469 ((c->flags & CHN_F_VIRTUAL) ? PCM_CAP_VIRTUAL : 0) | 470 ((c->direction == PCMDIR_PLAY) ? PCM_CAP_OUTPUT : PCM_CAP_INPUT); 471 472 nvlist_add_string(cdi, SNDST_DSPS_SOUND4_CHAN_NAME, c->name); 473 nvlist_add_string(cdi, SNDST_DSPS_SOUND4_CHAN_PARENTCHAN, 474 c->parentchannel != NULL ? c->parentchannel->name : ""); 475 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_UNIT, nchan++); 476 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_CAPS, caps); 477 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_LATENCY, 478 c->latency); 479 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_RATE, c->speed); 480 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_FORMAT, 481 c->format); 482 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_PID, c->pid); 483 nvlist_add_string(cdi, SNDST_DSPS_SOUND4_CHAN_COMM, c->comm); 484 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_INTR, 485 c->interrupts); 486 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_FEEDCNT, 487 c->feedcount); 488 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_XRUNS, c->xruns); 489 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_LEFTVOL, 490 CHN_GETVOLUME(c, SND_VOL_C_PCM, SND_CHN_T_FL)); 491 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_RIGHTVOL, 492 CHN_GETVOLUME(c, SND_VOL_C_PCM, SND_CHN_T_FR)); 493 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_FORMAT, 494 c->bufhard->fmt); 495 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_RATE, 496 c->bufhard->spd); 497 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_SIZE, 498 c->bufhard->bufsize); 499 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_BLKSZ, 500 c->bufhard->blksz); 501 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_BLKCNT, 502 c->bufhard->blkcnt); 503 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_FREE, 504 sndbuf_getfree(c->bufhard)); 505 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_READY, 506 sndbuf_getready(c->bufhard)); 507 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_FORMAT, 508 c->bufsoft->fmt); 509 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_RATE, 510 c->bufsoft->spd); 511 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_SIZE, 512 c->bufsoft->bufsize); 513 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_BLKSZ, 514 c->bufsoft->blksz); 515 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_BLKCNT, 516 c->bufsoft->blkcnt); 517 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_FREE, 518 sndbuf_getfree(c->bufsoft)); 519 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_READY, 520 sndbuf_getready(c->bufsoft)); 521 522 if (c->parentchannel != NULL) { 523 sbuf_printf(&sb, "[%s", (c->direction == PCMDIR_REC) ? 524 c->parentchannel->name : "userland"); 525 } else { 526 sbuf_printf(&sb, "[%s", (c->direction == PCMDIR_REC) ? 527 "hardware" : 528 ((d->flags & SD_F_PVCHANS) ? "vchans" : "userland")); 529 } 530 sbuf_printf(&sb, " -> "); 531 f = c->feeder; 532 while (f->source != NULL) 533 f = f->source; 534 while (f != NULL) { 535 sbuf_printf(&sb, "%s", f->class->name); 536 if (f->class->type == FEEDER_FORMAT) { 537 snd_afmt2str(f->desc.in, buf, sizeof(buf)); 538 sbuf_printf(&sb, "(%s -> ", buf); 539 snd_afmt2str(f->desc.out, buf, sizeof(buf)); 540 sbuf_printf(&sb, "%s)", buf); 541 } else if (f->class->type == FEEDER_MATRIX) { 542 sbuf_printf(&sb, "(%d.%dch -> %d.%dch)", 543 AFMT_CHANNEL(f->desc.in) - 544 AFMT_EXTCHANNEL(f->desc.in), 545 AFMT_EXTCHANNEL(f->desc.in), 546 AFMT_CHANNEL(f->desc.out) - 547 AFMT_EXTCHANNEL(f->desc.out), 548 AFMT_EXTCHANNEL(f->desc.out)); 549 } else if (f->class->type == FEEDER_RATE) { 550 sbuf_printf(&sb, "(%d -> %d)", 551 FEEDER_GET(f, FEEDRATE_SRC), 552 FEEDER_GET(f, FEEDRATE_DST)); 553 } else { 554 snd_afmt2str(f->desc.out, buf, sizeof(buf)); 555 sbuf_printf(&sb, "(%s)", buf); 556 } 557 sbuf_printf(&sb, " -> "); 558 f = f->parent; 559 } 560 if (c->parentchannel != NULL) { 561 sbuf_printf(&sb, "%s]", (c->direction == PCMDIR_REC) ? 562 "userland" : c->parentchannel->name); 563 } else { 564 sbuf_printf(&sb, "%s]", (c->direction == PCMDIR_REC) ? 565 ((d->flags & SD_F_RVCHANS) ? "vchans" : "userland") : 566 "hardware"); 567 } 568 569 CHN_UNLOCK(c); 570 571 sbuf_finish(&sb); 572 nvlist_add_string(cdi, SNDST_DSPS_SOUND4_CHAN_FEEDERCHAIN, 573 sbuf_data(&sb)); 574 sbuf_delete(&sb); 575 576 nvlist_append_nvlist_array(sound4di, 577 SNDST_DSPS_SOUND4_CHAN_INFO, cdi); 578 nvlist_destroy(cdi); 579 err = nvlist_error(sound4di); 580 if (err) { 581 PCM_RELEASE_QUICK(d); 582 goto done; 583 } 584 } 585 nvlist_move_nvlist(di, SNDST_DSPS_PROVIDER_INFO, sound4di); 586 sound4di = NULL; 587 588 PCM_RELEASE_QUICK(d); 589 nvlist_add_string(di, SNDST_DSPS_PROVIDER, SNDST_DSPS_SOUND4_PROVIDER); 590 591 err = nvlist_error(di); 592 if (err) 593 goto done; 594 595 *dip = di; 596 597 done: 598 if (err) { 599 nvlist_destroy(sound4di); 600 nvlist_destroy(di); 601 } 602 return (err); 603 } 604 605 static int 606 sndstat_build_userland_nvlist(struct sndstat_userdev *ud, nvlist_t **dip) 607 { 608 nvlist_t *di, *diinfo; 609 int err; 610 611 di = nvlist_create(0); 612 if (di == NULL) { 613 err = ENOMEM; 614 goto done; 615 } 616 617 nvlist_add_bool(di, SNDST_DSPS_FROM_USER, true); 618 nvlist_add_number(di, SNDST_DSPS_PCHAN, ud->pchan); 619 nvlist_add_number(di, SNDST_DSPS_RCHAN, ud->rchan); 620 nvlist_add_string(di, SNDST_DSPS_NAMEUNIT, ud->nameunit); 621 nvlist_add_string( 622 di, SNDST_DSPS_DEVNODE, ud->devnode); 623 nvlist_add_string(di, SNDST_DSPS_DESC, ud->desc); 624 if (ud->pchan != 0) { 625 nvlist_add_number(di, "pminrate", 626 ud->info_play.min_rate); 627 nvlist_add_number(di, "pmaxrate", 628 ud->info_play.max_rate); 629 nvlist_add_number(di, "pfmts", 630 ud->info_play.formats); 631 diinfo = sndstat_create_diinfo_nv(ud->info_play.min_rate, 632 ud->info_play.max_rate, ud->info_play.formats, 633 ud->info_play.min_chn, ud->info_play.max_chn); 634 if (diinfo == NULL) 635 nvlist_set_error(di, ENOMEM); 636 else 637 nvlist_move_nvlist(di, SNDST_DSPS_INFO_PLAY, diinfo); 638 } 639 if (ud->rchan != 0) { 640 nvlist_add_number(di, "rminrate", 641 ud->info_rec.min_rate); 642 nvlist_add_number(di, "rmaxrate", 643 ud->info_rec.max_rate); 644 nvlist_add_number(di, "rfmts", 645 ud->info_rec.formats); 646 diinfo = sndstat_create_diinfo_nv(ud->info_rec.min_rate, 647 ud->info_rec.max_rate, ud->info_rec.formats, 648 ud->info_rec.min_chn, ud->info_rec.max_chn); 649 if (diinfo == NULL) 650 nvlist_set_error(di, ENOMEM); 651 else 652 nvlist_move_nvlist(di, SNDST_DSPS_INFO_REC, diinfo); 653 } 654 nvlist_add_string(di, SNDST_DSPS_PROVIDER, 655 (ud->provider != NULL) ? ud->provider : ""); 656 if (ud->provider_nvl != NULL) 657 nvlist_add_nvlist( 658 di, SNDST_DSPS_PROVIDER_INFO, ud->provider_nvl); 659 660 err = nvlist_error(di); 661 if (err) 662 goto done; 663 664 *dip = di; 665 666 done: 667 if (err) 668 nvlist_destroy(di); 669 return (err); 670 } 671 672 /* 673 * Should only be called with the following locks held: 674 * * sndstat_lock 675 */ 676 static int 677 sndstat_create_devs_nvlist(nvlist_t **nvlp) 678 { 679 int err; 680 nvlist_t *nvl; 681 struct sndstat_entry *ent; 682 struct sndstat_file *pf; 683 684 nvl = nvlist_create(0); 685 if (nvl == NULL) 686 return (ENOMEM); 687 688 TAILQ_FOREACH(ent, &sndstat_devlist, link) { 689 if (ent->type == SNDST_TYPE_PCM) { 690 struct snddev_info *d; 691 nvlist_t *di; 692 693 d = device_get_softc(ent->dev); 694 if (!PCM_REGISTERED(d)) 695 continue; 696 697 err = sndstat_build_sound4_nvlist(d, &di); 698 if (err) 699 goto done; 700 701 nvlist_append_nvlist_array(nvl, SNDST_DSPS, di); 702 nvlist_destroy(di); 703 err = nvlist_error(nvl); 704 if (err) 705 goto done; 706 } else if (ent->type == SNDST_TYPE_MIDI) { 707 /* TODO */ 708 } 709 } 710 711 TAILQ_FOREACH(pf, &sndstat_filelist, entry) { 712 struct sndstat_userdev *ud; 713 714 sx_xlock(&pf->lock); 715 716 TAILQ_FOREACH(ud, &pf->userdev_list, link) { 717 nvlist_t *di; 718 719 err = sndstat_build_userland_nvlist(ud, &di); 720 if (err != 0) { 721 sx_xunlock(&pf->lock); 722 goto done; 723 } 724 nvlist_append_nvlist_array(nvl, SNDST_DSPS, di); 725 nvlist_destroy(di); 726 727 err = nvlist_error(nvl); 728 if (err != 0) { 729 sx_xunlock(&pf->lock); 730 goto done; 731 } 732 } 733 734 sx_xunlock(&pf->lock); 735 } 736 737 *nvlp = nvl; 738 739 done: 740 if (err != 0) 741 nvlist_destroy(nvl); 742 return (err); 743 } 744 745 static int 746 sndstat_refresh_devs(struct sndstat_file *pf) 747 { 748 sx_xlock(&pf->lock); 749 free(pf->devs_nvlbuf, M_NVLIST); 750 pf->devs_nvlbuf = NULL; 751 pf->devs_nbytes = 0; 752 sx_unlock(&pf->lock); 753 754 return (0); 755 } 756 757 static int 758 sndstat_get_devs(struct sndstat_file *pf, void *arg_buf, size_t *arg_nbytes) 759 { 760 int err; 761 762 SNDSTAT_LOCK(); 763 sx_xlock(&pf->lock); 764 765 if (pf->devs_nvlbuf == NULL) { 766 nvlist_t *nvl; 767 void *nvlbuf; 768 size_t nbytes; 769 int err; 770 771 sx_xunlock(&pf->lock); 772 773 err = sndstat_create_devs_nvlist(&nvl); 774 if (err) { 775 SNDSTAT_UNLOCK(); 776 return (err); 777 } 778 779 sx_xlock(&pf->lock); 780 781 nvlbuf = nvlist_pack(nvl, &nbytes); 782 err = nvlist_error(nvl); 783 nvlist_destroy(nvl); 784 if (nvlbuf == NULL || err != 0) { 785 SNDSTAT_UNLOCK(); 786 sx_xunlock(&pf->lock); 787 if (err == 0) 788 return (ENOMEM); 789 return (err); 790 } 791 792 free(pf->devs_nvlbuf, M_NVLIST); 793 pf->devs_nvlbuf = nvlbuf; 794 pf->devs_nbytes = nbytes; 795 } 796 797 SNDSTAT_UNLOCK(); 798 799 if (*arg_nbytes == 0) { 800 *arg_nbytes = pf->devs_nbytes; 801 err = 0; 802 goto done; 803 } 804 if (*arg_nbytes < pf->devs_nbytes) { 805 *arg_nbytes = 0; 806 err = 0; 807 goto done; 808 } 809 810 err = copyout(pf->devs_nvlbuf, arg_buf, pf->devs_nbytes); 811 if (err) 812 goto done; 813 814 *arg_nbytes = pf->devs_nbytes; 815 816 free(pf->devs_nvlbuf, M_NVLIST); 817 pf->devs_nvlbuf = NULL; 818 pf->devs_nbytes = 0; 819 820 done: 821 sx_unlock(&pf->lock); 822 return (err); 823 } 824 825 static int 826 sndstat_unpack_user_nvlbuf(const void *unvlbuf, size_t nbytes, nvlist_t **nvl) 827 { 828 void *nvlbuf; 829 int err; 830 831 nvlbuf = malloc(nbytes, M_DEVBUF, M_WAITOK); 832 err = copyin(unvlbuf, nvlbuf, nbytes); 833 if (err != 0) { 834 free(nvlbuf, M_DEVBUF); 835 return (err); 836 } 837 *nvl = nvlist_unpack(nvlbuf, nbytes, 0); 838 free(nvlbuf, M_DEVBUF); 839 if (*nvl == NULL) { 840 return (EINVAL); 841 } 842 843 return (0); 844 } 845 846 static bool 847 sndstat_diinfo_is_sane(const nvlist_t *diinfo) 848 { 849 if (!(nvlist_exists_number(diinfo, SNDST_DSPS_INFO_MIN_RATE) && 850 nvlist_exists_number(diinfo, SNDST_DSPS_INFO_MAX_RATE) && 851 nvlist_exists_number(diinfo, SNDST_DSPS_INFO_FORMATS) && 852 nvlist_exists_number(diinfo, SNDST_DSPS_INFO_MIN_CHN) && 853 nvlist_exists_number(diinfo, SNDST_DSPS_INFO_MAX_CHN))) 854 return (false); 855 return (true); 856 } 857 858 static bool 859 sndstat_dsp_nvlist_is_sane(const nvlist_t *nvlist) 860 { 861 if (!(nvlist_exists_string(nvlist, SNDST_DSPS_DEVNODE) && 862 nvlist_exists_string(nvlist, SNDST_DSPS_DESC) && 863 nvlist_exists_number(nvlist, SNDST_DSPS_PCHAN) && 864 nvlist_exists_number(nvlist, SNDST_DSPS_RCHAN))) 865 return (false); 866 867 if (nvlist_get_number(nvlist, SNDST_DSPS_PCHAN) > 0) { 868 if (nvlist_exists_nvlist(nvlist, SNDST_DSPS_INFO_PLAY)) { 869 if (!sndstat_diinfo_is_sane(nvlist_get_nvlist(nvlist, 870 SNDST_DSPS_INFO_PLAY))) 871 return (false); 872 } else if (!(nvlist_exists_number(nvlist, "pminrate") && 873 nvlist_exists_number(nvlist, "pmaxrate") && 874 nvlist_exists_number(nvlist, "pfmts"))) 875 return (false); 876 } 877 878 if (nvlist_get_number(nvlist, SNDST_DSPS_RCHAN) > 0) { 879 if (nvlist_exists_nvlist(nvlist, SNDST_DSPS_INFO_REC)) { 880 if (!sndstat_diinfo_is_sane(nvlist_get_nvlist(nvlist, 881 SNDST_DSPS_INFO_REC))) 882 return (false); 883 } else if (!(nvlist_exists_number(nvlist, "rminrate") && 884 nvlist_exists_number(nvlist, "rmaxrate") && 885 nvlist_exists_number(nvlist, "rfmts"))) 886 return (false); 887 } 888 889 return (true); 890 891 } 892 893 static void 894 sndstat_get_diinfo_nv(const nvlist_t *nv, uint32_t *min_rate, 895 uint32_t *max_rate, uint32_t *formats, uint32_t *min_chn, 896 uint32_t *max_chn) 897 { 898 *min_rate = nvlist_get_number(nv, SNDST_DSPS_INFO_MIN_RATE); 899 *max_rate = nvlist_get_number(nv, SNDST_DSPS_INFO_MAX_RATE); 900 *formats = nvlist_get_number(nv, SNDST_DSPS_INFO_FORMATS); 901 *min_chn = nvlist_get_number(nv, SNDST_DSPS_INFO_MIN_CHN); 902 *max_chn = nvlist_get_number(nv, SNDST_DSPS_INFO_MAX_CHN); 903 } 904 905 static int 906 sndstat_dsp_unpack_nvlist(const nvlist_t *nvlist, struct sndstat_userdev *ud) 907 { 908 const char *nameunit, *devnode, *desc; 909 unsigned int pchan, rchan; 910 uint32_t pminrate = 0, pmaxrate = 0; 911 uint32_t rminrate = 0, rmaxrate = 0; 912 uint32_t pfmts = 0, rfmts = 0; 913 uint32_t pminchn = 0, pmaxchn = 0; 914 uint32_t rminchn = 0, rmaxchn = 0; 915 nvlist_t *provider_nvl = NULL; 916 const nvlist_t *diinfo; 917 const char *provider; 918 919 devnode = nvlist_get_string(nvlist, SNDST_DSPS_DEVNODE); 920 if (nvlist_exists_string(nvlist, SNDST_DSPS_NAMEUNIT)) 921 nameunit = nvlist_get_string(nvlist, SNDST_DSPS_NAMEUNIT); 922 else 923 nameunit = devnode; 924 desc = nvlist_get_string(nvlist, SNDST_DSPS_DESC); 925 pchan = nvlist_get_number(nvlist, SNDST_DSPS_PCHAN); 926 rchan = nvlist_get_number(nvlist, SNDST_DSPS_RCHAN); 927 if (pchan != 0) { 928 if (nvlist_exists_nvlist(nvlist, SNDST_DSPS_INFO_PLAY)) { 929 diinfo = nvlist_get_nvlist(nvlist, 930 SNDST_DSPS_INFO_PLAY); 931 sndstat_get_diinfo_nv(diinfo, &pminrate, &pmaxrate, 932 &pfmts, &pminchn, &pmaxchn); 933 } else { 934 pminrate = nvlist_get_number(nvlist, "pminrate"); 935 pmaxrate = nvlist_get_number(nvlist, "pmaxrate"); 936 pfmts = nvlist_get_number(nvlist, "pfmts"); 937 } 938 } 939 if (rchan != 0) { 940 if (nvlist_exists_nvlist(nvlist, SNDST_DSPS_INFO_REC)) { 941 diinfo = nvlist_get_nvlist(nvlist, 942 SNDST_DSPS_INFO_REC); 943 sndstat_get_diinfo_nv(diinfo, &rminrate, &rmaxrate, 944 &rfmts, &rminchn, &rmaxchn); 945 } else { 946 rminrate = nvlist_get_number(nvlist, "rminrate"); 947 rmaxrate = nvlist_get_number(nvlist, "rmaxrate"); 948 rfmts = nvlist_get_number(nvlist, "rfmts"); 949 } 950 } 951 952 provider = dnvlist_get_string(nvlist, SNDST_DSPS_PROVIDER, ""); 953 if (provider[0] == '\0') 954 provider = NULL; 955 956 if (provider != NULL && 957 nvlist_exists_nvlist(nvlist, SNDST_DSPS_PROVIDER_INFO)) { 958 provider_nvl = nvlist_clone( 959 nvlist_get_nvlist(nvlist, SNDST_DSPS_PROVIDER_INFO)); 960 if (provider_nvl == NULL) 961 return (ENOMEM); 962 } 963 964 ud->provider = (provider != NULL) ? strdup(provider, M_DEVBUF) : NULL; 965 ud->devnode = strdup(devnode, M_DEVBUF); 966 ud->nameunit = strdup(nameunit, M_DEVBUF); 967 ud->desc = strdup(desc, M_DEVBUF); 968 ud->pchan = pchan; 969 ud->rchan = rchan; 970 ud->info_play.min_rate = pminrate; 971 ud->info_play.max_rate = pmaxrate; 972 ud->info_play.formats = pfmts; 973 ud->info_play.min_chn = pminchn; 974 ud->info_play.max_chn = pmaxchn; 975 ud->info_rec.min_rate = rminrate; 976 ud->info_rec.max_rate = rmaxrate; 977 ud->info_rec.formats = rfmts; 978 ud->info_rec.min_chn = rminchn; 979 ud->info_rec.max_chn = rmaxchn; 980 ud->provider_nvl = provider_nvl; 981 return (0); 982 } 983 984 static int 985 sndstat_add_user_devs(struct sndstat_file *pf, void *nvlbuf, size_t nbytes) 986 { 987 int err; 988 nvlist_t *nvl = NULL; 989 const nvlist_t * const *dsps; 990 size_t i, ndsps; 991 992 if ((pf->fflags & FWRITE) == 0) { 993 err = EPERM; 994 goto done; 995 } 996 997 if (nbytes > SNDST_UNVLBUF_MAX) { 998 err = ENOMEM; 999 goto done; 1000 } 1001 1002 err = sndstat_unpack_user_nvlbuf(nvlbuf, nbytes, &nvl); 1003 if (err != 0) 1004 goto done; 1005 1006 if (!nvlist_exists_nvlist_array(nvl, SNDST_DSPS)) { 1007 err = EINVAL; 1008 goto done; 1009 } 1010 dsps = nvlist_get_nvlist_array(nvl, SNDST_DSPS, &ndsps); 1011 for (i = 0; i < ndsps; i++) { 1012 if (!sndstat_dsp_nvlist_is_sane(dsps[i])) { 1013 err = EINVAL; 1014 goto done; 1015 } 1016 } 1017 sx_xlock(&pf->lock); 1018 for (i = 0; i < ndsps; i++) { 1019 struct sndstat_userdev *ud = 1020 malloc(sizeof(*ud), M_DEVBUF, M_WAITOK); 1021 err = sndstat_dsp_unpack_nvlist(dsps[i], ud); 1022 if (err) { 1023 sx_unlock(&pf->lock); 1024 goto done; 1025 } 1026 TAILQ_INSERT_TAIL(&pf->userdev_list, ud, link); 1027 } 1028 sx_unlock(&pf->lock); 1029 1030 done: 1031 nvlist_destroy(nvl); 1032 return (err); 1033 } 1034 1035 static int 1036 sndstat_flush_user_devs(struct sndstat_file *pf) 1037 { 1038 if ((pf->fflags & FWRITE) == 0) 1039 return (EPERM); 1040 1041 sx_xlock(&pf->lock); 1042 sndstat_remove_all_userdevs(pf); 1043 sx_xunlock(&pf->lock); 1044 1045 return (0); 1046 } 1047 1048 static int 1049 sndstat_ioctl( 1050 struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td) 1051 { 1052 int err; 1053 struct sndstat_file *pf; 1054 struct sndstioc_nv_arg *arg; 1055 #ifdef COMPAT_FREEBSD32 1056 struct sndstioc_nv_arg32 *arg32; 1057 size_t nbytes; 1058 #endif 1059 1060 err = devfs_get_cdevpriv((void **)&pf); 1061 if (err != 0) 1062 return (err); 1063 1064 switch (cmd) { 1065 case SNDSTIOC_GET_DEVS: 1066 arg = (struct sndstioc_nv_arg *)data; 1067 err = sndstat_get_devs(pf, arg->buf, &arg->nbytes); 1068 break; 1069 #ifdef COMPAT_FREEBSD32 1070 case SNDSTIOC_GET_DEVS32: 1071 arg32 = (struct sndstioc_nv_arg32 *)data; 1072 nbytes = arg32->nbytes; 1073 err = sndstat_get_devs(pf, (void *)(uintptr_t)arg32->buf, 1074 &nbytes); 1075 if (err == 0) { 1076 KASSERT(nbytes < UINT_MAX, ("impossibly many bytes")); 1077 arg32->nbytes = nbytes; 1078 } 1079 break; 1080 #endif 1081 case SNDSTIOC_ADD_USER_DEVS: 1082 arg = (struct sndstioc_nv_arg *)data; 1083 err = sndstat_add_user_devs(pf, arg->buf, arg->nbytes); 1084 break; 1085 #ifdef COMPAT_FREEBSD32 1086 case SNDSTIOC_ADD_USER_DEVS32: 1087 arg32 = (struct sndstioc_nv_arg32 *)data; 1088 err = sndstat_add_user_devs(pf, (void *)(uintptr_t)arg32->buf, 1089 arg32->nbytes); 1090 break; 1091 #endif 1092 case SNDSTIOC_REFRESH_DEVS: 1093 err = sndstat_refresh_devs(pf); 1094 break; 1095 case SNDSTIOC_FLUSH_USER_DEVS: 1096 err = sndstat_flush_user_devs(pf); 1097 break; 1098 default: 1099 err = ENODEV; 1100 } 1101 1102 return (err); 1103 } 1104 1105 static struct sndstat_userdev * 1106 sndstat_line2userdev(struct sndstat_file *pf, const char *line, int n) 1107 { 1108 struct sndstat_userdev *ud; 1109 const char *e, *m; 1110 1111 ud = malloc(sizeof(*ud), M_DEVBUF, M_WAITOK|M_ZERO); 1112 1113 ud->provider = NULL; 1114 ud->provider_nvl = NULL; 1115 e = strchr(line, ':'); 1116 if (e == NULL) 1117 goto fail; 1118 ud->nameunit = strndup(line, e - line, M_DEVBUF); 1119 ud->devnode = malloc(e - line + 1, M_DEVBUF, M_WAITOK | M_ZERO); 1120 strlcat(ud->devnode, ud->nameunit, e - line + 1); 1121 line = e + 1; 1122 1123 e = strchr(line, '<'); 1124 if (e == NULL) 1125 goto fail; 1126 line = e + 1; 1127 e = strrchr(line, '>'); 1128 if (e == NULL) 1129 goto fail; 1130 ud->desc = strndup(line, e - line, M_DEVBUF); 1131 line = e + 1; 1132 1133 e = strchr(line, '('); 1134 if (e == NULL) 1135 goto fail; 1136 line = e + 1; 1137 e = strrchr(line, ')'); 1138 if (e == NULL) 1139 goto fail; 1140 m = strstr(line, "play"); 1141 if (m != NULL && m < e) 1142 ud->pchan = 1; 1143 m = strstr(line, "rec"); 1144 if (m != NULL && m < e) 1145 ud->rchan = 1; 1146 1147 return (ud); 1148 1149 fail: 1150 free(ud->nameunit, M_DEVBUF); 1151 free(ud->devnode, M_DEVBUF); 1152 free(ud->desc, M_DEVBUF); 1153 free(ud, M_DEVBUF); 1154 return (NULL); 1155 } 1156 1157 /************************************************************************/ 1158 1159 void 1160 sndstat_register(device_t dev, enum sndstat_type type, char *str) 1161 { 1162 struct sndstat_entry *ent; 1163 struct sndstat_entry *pre; 1164 int unit; 1165 1166 unit = device_get_unit(dev); 1167 1168 ent = malloc(sizeof *ent, M_DEVBUF, M_WAITOK | M_ZERO); 1169 ent->dev = dev; 1170 ent->str = str; 1171 ent->type = type; 1172 ent->unit = unit; 1173 1174 SNDSTAT_LOCK(); 1175 /* sorted list insertion */ 1176 TAILQ_FOREACH(pre, &sndstat_devlist, link) { 1177 if (pre->unit > unit) 1178 break; 1179 else if (pre->unit < unit) 1180 continue; 1181 if (pre->type > type) 1182 break; 1183 else if (pre->type < unit) 1184 continue; 1185 } 1186 if (pre == NULL) { 1187 TAILQ_INSERT_TAIL(&sndstat_devlist, ent, link); 1188 } else { 1189 TAILQ_INSERT_BEFORE(pre, ent, link); 1190 } 1191 SNDSTAT_UNLOCK(); 1192 } 1193 1194 int 1195 sndstat_unregister(device_t dev) 1196 { 1197 struct sndstat_entry *ent; 1198 int error = ENXIO; 1199 1200 SNDSTAT_LOCK(); 1201 TAILQ_FOREACH(ent, &sndstat_devlist, link) { 1202 if (ent->dev == dev) { 1203 TAILQ_REMOVE(&sndstat_devlist, ent, link); 1204 free(ent, M_DEVBUF); 1205 error = 0; 1206 break; 1207 } 1208 } 1209 SNDSTAT_UNLOCK(); 1210 1211 return (error); 1212 } 1213 1214 /************************************************************************/ 1215 1216 static int 1217 sndstat_prepare_pcm(struct sbuf *s, device_t dev, int verbose) 1218 { 1219 struct snddev_info *d; 1220 struct pcm_channel *c; 1221 struct pcm_feeder *f; 1222 1223 d = device_get_softc(dev); 1224 PCM_BUSYASSERT(d); 1225 1226 if (CHN_EMPTY(d, channels.pcm)) { 1227 sbuf_printf(s, " (mixer only)"); 1228 return (0); 1229 } 1230 1231 if (verbose < 1) { 1232 sbuf_printf(s, " (%s%s%s", 1233 d->playcount ? "play" : "", 1234 (d->playcount && d->reccount) ? "/" : "", 1235 d->reccount ? "rec" : ""); 1236 } else { 1237 sbuf_printf(s, " (%dp:%dv/%dr:%dv", 1238 d->playcount, d->pvchancount, 1239 d->reccount, d->rvchancount); 1240 } 1241 sbuf_printf(s, "%s)%s", 1242 ((d->playcount != 0 && d->reccount != 0) && 1243 (d->flags & SD_F_SIMPLEX)) ? " simplex" : "", 1244 (device_get_unit(dev) == snd_unit) ? " default" : ""); 1245 1246 if (verbose <= 1) 1247 return (0); 1248 1249 sbuf_printf(s, "\n\t"); 1250 sbuf_printf(s, "snddev flags=0x%b", d->flags, SD_F_BITS); 1251 1252 CHN_FOREACH(c, d, channels.pcm) { 1253 KASSERT(c->bufhard != NULL && c->bufsoft != NULL, 1254 ("hosed pcm channel setup")); 1255 1256 CHN_LOCK(c); 1257 1258 sbuf_printf(s, "\n\t"); 1259 1260 sbuf_printf(s, "%s[%s]: ", 1261 (c->parentchannel != NULL) ? 1262 c->parentchannel->name : "", c->name); 1263 sbuf_printf(s, "spd %d", c->speed); 1264 if (c->speed != c->bufhard->spd) 1265 sbuf_printf(s, "/%d", c->bufhard->spd); 1266 sbuf_printf(s, ", fmt 0x%08x", c->format); 1267 if (c->format != c->bufhard->fmt) { 1268 sbuf_printf(s, "/0x%08x", c->bufhard->fmt); 1269 } 1270 sbuf_printf(s, ", flags 0x%08x, 0x%08x", 1271 c->flags, c->feederflags); 1272 if (c->pid != -1) { 1273 sbuf_printf(s, ", pid %d (%s)", 1274 c->pid, c->comm); 1275 } 1276 sbuf_printf(s, "\n\t"); 1277 1278 sbuf_printf(s, "\tinterrupts %d, ", c->interrupts); 1279 1280 if (c->direction == PCMDIR_REC) { 1281 sbuf_printf(s, 1282 "overruns %d, feed %u, hfree %d, " 1283 "sfree %d\n\t\t[b:%d/%d/%d|bs:%d/%d/%d]", 1284 c->xruns, c->feedcount, 1285 sndbuf_getfree(c->bufhard), 1286 sndbuf_getfree(c->bufsoft), 1287 c->bufhard->bufsize, 1288 c->bufhard->blksz, 1289 c->bufhard->blkcnt, 1290 c->bufsoft->bufsize, 1291 c->bufsoft->blksz, 1292 c->bufsoft->blkcnt); 1293 } else { 1294 sbuf_printf(s, 1295 "underruns %d, feed %u, ready %d " 1296 "\n\t\t[b:%d/%d/%d|bs:%d/%d/%d]", 1297 c->xruns, c->feedcount, 1298 sndbuf_getready(c->bufsoft), 1299 c->bufhard->bufsize, 1300 c->bufhard->blksz, 1301 c->bufhard->blkcnt, 1302 c->bufsoft->bufsize, 1303 c->bufsoft->blksz, 1304 c->bufsoft->blkcnt); 1305 } 1306 sbuf_printf(s, "\n\t"); 1307 1308 sbuf_printf(s, "\tchannel flags=0x%b", c->flags, CHN_F_BITS); 1309 sbuf_printf(s, "\n\t"); 1310 1311 if (c->parentchannel != NULL) { 1312 sbuf_printf(s, "\t{%s}", (c->direction == PCMDIR_REC) ? 1313 c->parentchannel->name : "userland"); 1314 } else { 1315 sbuf_printf(s, "\t{%s}", (c->direction == PCMDIR_REC) ? 1316 "hardware" : 1317 ((d->flags & SD_F_PVCHANS) ? "vchans" : "userland")); 1318 } 1319 sbuf_printf(s, " -> "); 1320 f = c->feeder; 1321 while (f->source != NULL) 1322 f = f->source; 1323 while (f != NULL) { 1324 sbuf_printf(s, "%s", f->class->name); 1325 if (f->class->type == FEEDER_FORMAT) { 1326 sbuf_printf(s, "(0x%08x -> 0x%08x)", 1327 f->desc.in, f->desc.out); 1328 } else if (f->class->type == FEEDER_MATRIX) { 1329 sbuf_printf(s, "(%d.%d -> %d.%d)", 1330 AFMT_CHANNEL(f->desc.in) - 1331 AFMT_EXTCHANNEL(f->desc.in), 1332 AFMT_EXTCHANNEL(f->desc.in), 1333 AFMT_CHANNEL(f->desc.out) - 1334 AFMT_EXTCHANNEL(f->desc.out), 1335 AFMT_EXTCHANNEL(f->desc.out)); 1336 } else if (f->class->type == FEEDER_RATE) { 1337 sbuf_printf(s, 1338 "(0x%08x q:%d %d -> %d)", 1339 f->desc.out, 1340 FEEDER_GET(f, FEEDRATE_QUALITY), 1341 FEEDER_GET(f, FEEDRATE_SRC), 1342 FEEDER_GET(f, FEEDRATE_DST)); 1343 } else { 1344 sbuf_printf(s, "(0x%08x)", 1345 f->desc.out); 1346 } 1347 sbuf_printf(s, " -> "); 1348 f = f->parent; 1349 } 1350 if (c->parentchannel != NULL) { 1351 sbuf_printf(s, "{%s}", (c->direction == PCMDIR_REC) ? 1352 "userland" : c->parentchannel->name); 1353 } else { 1354 sbuf_printf(s, "{%s}", (c->direction == PCMDIR_REC) ? 1355 ((d->flags & SD_F_RVCHANS) ? "vchans" : "userland") : 1356 "hardware"); 1357 } 1358 1359 CHN_UNLOCK(c); 1360 } 1361 1362 return (0); 1363 } 1364 1365 static int 1366 sndstat_prepare(struct sndstat_file *pf_self) 1367 { 1368 struct sbuf *s = &pf_self->sbuf; 1369 struct sndstat_entry *ent; 1370 struct snddev_info *d; 1371 struct sndstat_file *pf; 1372 int k; 1373 1374 /* make sure buffer is reset */ 1375 sbuf_clear(s); 1376 1377 if (snd_verbose > 0) 1378 sbuf_printf(s, "FreeBSD Audio Driver\n"); 1379 1380 /* generate list of installed devices */ 1381 k = 0; 1382 TAILQ_FOREACH(ent, &sndstat_devlist, link) { 1383 if (ent->type == SNDST_TYPE_PCM) { 1384 d = device_get_softc(ent->dev); 1385 if (!PCM_REGISTERED(d)) 1386 continue; 1387 if (!k++) 1388 sbuf_printf(s, "Installed devices:\n"); 1389 sbuf_printf(s, "%s:", device_get_nameunit(ent->dev)); 1390 sbuf_printf(s, " <%s>", device_get_desc(ent->dev)); 1391 if (snd_verbose > 0) 1392 sbuf_printf(s, " %s", ent->str); 1393 /* XXX Need Giant magic entry ??? */ 1394 PCM_ACQUIRE_QUICK(d); 1395 sndstat_prepare_pcm(s, ent->dev, snd_verbose); 1396 PCM_RELEASE_QUICK(d); 1397 sbuf_printf(s, "\n"); 1398 } else if (ent->type == SNDST_TYPE_MIDI) { 1399 /* TODO */ 1400 } 1401 } 1402 if (k == 0) 1403 sbuf_printf(s, "No devices installed.\n"); 1404 1405 /* append any input from userspace */ 1406 k = 0; 1407 TAILQ_FOREACH(pf, &sndstat_filelist, entry) { 1408 struct sndstat_userdev *ud; 1409 1410 if (pf == pf_self) 1411 continue; 1412 sx_xlock(&pf->lock); 1413 if (TAILQ_EMPTY(&pf->userdev_list)) { 1414 sx_unlock(&pf->lock); 1415 continue; 1416 } 1417 if (!k++) 1418 sbuf_printf(s, "Installed devices from userspace:\n"); 1419 TAILQ_FOREACH(ud, &pf->userdev_list, link) { 1420 const char *caps = (ud->pchan && ud->rchan) ? 1421 "play/rec" : 1422 (ud->pchan ? "play" : (ud->rchan ? "rec" : "")); 1423 sbuf_printf(s, "%s: <%s>", ud->nameunit, ud->desc); 1424 sbuf_printf(s, " (%s)", caps); 1425 sbuf_printf(s, "\n"); 1426 } 1427 sx_unlock(&pf->lock); 1428 } 1429 if (k == 0) 1430 sbuf_printf(s, "No devices installed from userspace.\n"); 1431 1432 sbuf_finish(s); 1433 return (sbuf_len(s)); 1434 } 1435 1436 static void 1437 sndstat_sysinit(void *p) 1438 { 1439 sx_init(&sndstat_lock, "sndstat lock"); 1440 sndstat_dev = make_dev(&sndstat_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644, 1441 "sndstat"); 1442 } 1443 SYSINIT(sndstat_sysinit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysinit, NULL); 1444 1445 static void 1446 sndstat_sysuninit(void *p) 1447 { 1448 if (sndstat_dev != NULL) { 1449 /* destroy_dev() will wait for all references to go away */ 1450 destroy_dev(sndstat_dev); 1451 } 1452 sx_destroy(&sndstat_lock); 1453 } 1454 SYSUNINIT(sndstat_sysuninit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysuninit, NULL); 1455