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/lock.h> 44 #include <sys/malloc.h> 45 #include <sys/nv.h> 46 #include <sys/dnv.h> 47 #include <sys/sx.h> 48 49 #include <dev/sound/pcm/sound.h> 50 51 #include "feeder_if.h" 52 53 #define SS_TYPE_PCM 1 54 #define SS_TYPE_MIDI 2 55 56 static d_open_t sndstat_open; 57 static void sndstat_close(void *); 58 static d_read_t sndstat_read; 59 static d_write_t sndstat_write; 60 static d_ioctl_t sndstat_ioctl; 61 62 static struct cdevsw sndstat_cdevsw = { 63 .d_version = D_VERSION, 64 .d_open = sndstat_open, 65 .d_read = sndstat_read, 66 .d_write = sndstat_write, 67 .d_ioctl = sndstat_ioctl, 68 .d_name = "sndstat", 69 .d_flags = D_TRACKCLOSE, 70 }; 71 72 struct sndstat_entry { 73 TAILQ_ENTRY(sndstat_entry) link; 74 device_t dev; 75 char *str; 76 int type, 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 sndbuf_getfmt(c->bufhard)); 495 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_RATE, 496 sndbuf_getspd(c->bufhard)); 497 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_SIZE, 498 sndbuf_getsize(c->bufhard)); 499 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_BLKSZ, 500 sndbuf_getblksz(c->bufhard)); 501 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_HWBUF_BLKCNT, 502 sndbuf_getblkcnt(c->bufhard)); 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 sndbuf_getfmt(c->bufsoft)); 509 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_RATE, 510 sndbuf_getspd(c->bufsoft)); 511 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_SIZE, 512 sndbuf_getsize(c->bufsoft)); 513 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_BLKSZ, 514 sndbuf_getblksz(c->bufsoft)); 515 nvlist_add_number(cdi, SNDST_DSPS_SOUND4_CHAN_SWBUF_BLKCNT, 516 sndbuf_getblkcnt(c->bufsoft)); 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" : "userland"); 528 } 529 sbuf_printf(&sb, " -> "); 530 f = c->feeder; 531 while (f->source != NULL) 532 f = f->source; 533 while (f != NULL) { 534 sbuf_printf(&sb, "%s", f->class->name); 535 if (f->desc->type == FEEDER_FORMAT) { 536 snd_afmt2str(f->desc->in, buf, sizeof(buf)); 537 sbuf_printf(&sb, "(%s -> ", buf); 538 snd_afmt2str(f->desc->out, buf, sizeof(buf)); 539 sbuf_printf(&sb, "%s)", buf); 540 } else if (f->desc->type == FEEDER_MATRIX) { 541 sbuf_printf(&sb, "(%d.%dch -> %d.%dch)", 542 AFMT_CHANNEL(f->desc->in) - 543 AFMT_EXTCHANNEL(f->desc->in), 544 AFMT_EXTCHANNEL(f->desc->in), 545 AFMT_CHANNEL(f->desc->out) - 546 AFMT_EXTCHANNEL(f->desc->out), 547 AFMT_EXTCHANNEL(f->desc->out)); 548 } else if (f->desc->type == FEEDER_RATE) { 549 sbuf_printf(&sb, "(%d -> %d)", 550 FEEDER_GET(f, FEEDRATE_SRC), 551 FEEDER_GET(f, FEEDRATE_DST)); 552 } else { 553 snd_afmt2str(f->desc->out, buf, sizeof(buf)); 554 sbuf_printf(&sb, "(%s)", buf); 555 } 556 sbuf_printf(&sb, " -> "); 557 f = f->parent; 558 } 559 if (c->parentchannel != NULL) { 560 sbuf_printf(&sb, "%s]", (c->direction == PCMDIR_REC) ? 561 "userland" : c->parentchannel->name); 562 } else { 563 sbuf_printf(&sb, "%s]", (c->direction == PCMDIR_REC) ? 564 "userland" : "hardware"); 565 } 566 567 CHN_UNLOCK(c); 568 569 sbuf_finish(&sb); 570 nvlist_add_string(cdi, SNDST_DSPS_SOUND4_CHAN_FEEDERCHAIN, 571 sbuf_data(&sb)); 572 sbuf_delete(&sb); 573 574 nvlist_append_nvlist_array(sound4di, 575 SNDST_DSPS_SOUND4_CHAN_INFO, cdi); 576 nvlist_destroy(cdi); 577 err = nvlist_error(sound4di); 578 if (err) { 579 PCM_RELEASE_QUICK(d); 580 goto done; 581 } 582 } 583 nvlist_move_nvlist(di, SNDST_DSPS_PROVIDER_INFO, sound4di); 584 sound4di = NULL; 585 586 PCM_RELEASE_QUICK(d); 587 nvlist_add_string(di, SNDST_DSPS_PROVIDER, SNDST_DSPS_SOUND4_PROVIDER); 588 589 err = nvlist_error(di); 590 if (err) 591 goto done; 592 593 *dip = di; 594 595 done: 596 if (err) { 597 nvlist_destroy(sound4di); 598 nvlist_destroy(di); 599 } 600 return (err); 601 } 602 603 static int 604 sndstat_build_userland_nvlist(struct sndstat_userdev *ud, nvlist_t **dip) 605 { 606 nvlist_t *di, *diinfo; 607 int err; 608 609 di = nvlist_create(0); 610 if (di == NULL) { 611 err = ENOMEM; 612 goto done; 613 } 614 615 nvlist_add_bool(di, SNDST_DSPS_FROM_USER, true); 616 nvlist_add_number(di, SNDST_DSPS_PCHAN, ud->pchan); 617 nvlist_add_number(di, SNDST_DSPS_RCHAN, ud->rchan); 618 nvlist_add_string(di, SNDST_DSPS_NAMEUNIT, ud->nameunit); 619 nvlist_add_string( 620 di, SNDST_DSPS_DEVNODE, ud->devnode); 621 nvlist_add_string(di, SNDST_DSPS_DESC, ud->desc); 622 if (ud->pchan != 0) { 623 nvlist_add_number(di, "pminrate", 624 ud->info_play.min_rate); 625 nvlist_add_number(di, "pmaxrate", 626 ud->info_play.max_rate); 627 nvlist_add_number(di, "pfmts", 628 ud->info_play.formats); 629 diinfo = sndstat_create_diinfo_nv(ud->info_play.min_rate, 630 ud->info_play.max_rate, ud->info_play.formats, 631 ud->info_play.min_chn, ud->info_play.max_chn); 632 if (diinfo == NULL) 633 nvlist_set_error(di, ENOMEM); 634 else 635 nvlist_move_nvlist(di, SNDST_DSPS_INFO_PLAY, diinfo); 636 } 637 if (ud->rchan != 0) { 638 nvlist_add_number(di, "rminrate", 639 ud->info_rec.min_rate); 640 nvlist_add_number(di, "rmaxrate", 641 ud->info_rec.max_rate); 642 nvlist_add_number(di, "rfmts", 643 ud->info_rec.formats); 644 diinfo = sndstat_create_diinfo_nv(ud->info_rec.min_rate, 645 ud->info_rec.max_rate, ud->info_rec.formats, 646 ud->info_rec.min_chn, ud->info_rec.max_chn); 647 if (diinfo == NULL) 648 nvlist_set_error(di, ENOMEM); 649 else 650 nvlist_move_nvlist(di, SNDST_DSPS_INFO_REC, diinfo); 651 } 652 nvlist_add_string(di, SNDST_DSPS_PROVIDER, 653 (ud->provider != NULL) ? ud->provider : ""); 654 if (ud->provider_nvl != NULL) 655 nvlist_add_nvlist( 656 di, SNDST_DSPS_PROVIDER_INFO, ud->provider_nvl); 657 658 err = nvlist_error(di); 659 if (err) 660 goto done; 661 662 *dip = di; 663 664 done: 665 if (err) 666 nvlist_destroy(di); 667 return (err); 668 } 669 670 /* 671 * Should only be called with the following locks held: 672 * * sndstat_lock 673 */ 674 static int 675 sndstat_create_devs_nvlist(nvlist_t **nvlp) 676 { 677 int err; 678 nvlist_t *nvl; 679 struct sndstat_entry *ent; 680 struct sndstat_file *pf; 681 682 nvl = nvlist_create(0); 683 if (nvl == NULL) 684 return (ENOMEM); 685 686 TAILQ_FOREACH(ent, &sndstat_devlist, link) { 687 struct snddev_info *d; 688 nvlist_t *di; 689 690 d = device_get_softc(ent->dev); 691 if (!PCM_REGISTERED(d)) 692 continue; 693 694 err = sndstat_build_sound4_nvlist(d, &di); 695 if (err) 696 goto done; 697 698 nvlist_append_nvlist_array(nvl, SNDST_DSPS, di); 699 nvlist_destroy(di); 700 err = nvlist_error(nvl); 701 if (err) 702 goto done; 703 } 704 705 TAILQ_FOREACH(pf, &sndstat_filelist, entry) { 706 struct sndstat_userdev *ud; 707 708 sx_xlock(&pf->lock); 709 710 TAILQ_FOREACH(ud, &pf->userdev_list, link) { 711 nvlist_t *di; 712 713 err = sndstat_build_userland_nvlist(ud, &di); 714 if (err != 0) { 715 sx_xunlock(&pf->lock); 716 goto done; 717 } 718 nvlist_append_nvlist_array(nvl, SNDST_DSPS, di); 719 nvlist_destroy(di); 720 721 err = nvlist_error(nvl); 722 if (err != 0) { 723 sx_xunlock(&pf->lock); 724 goto done; 725 } 726 } 727 728 sx_xunlock(&pf->lock); 729 } 730 731 *nvlp = nvl; 732 733 done: 734 if (err != 0) 735 nvlist_destroy(nvl); 736 return (err); 737 } 738 739 static int 740 sndstat_refresh_devs(struct sndstat_file *pf) 741 { 742 sx_xlock(&pf->lock); 743 free(pf->devs_nvlbuf, M_NVLIST); 744 pf->devs_nvlbuf = NULL; 745 pf->devs_nbytes = 0; 746 sx_unlock(&pf->lock); 747 748 return (0); 749 } 750 751 static int 752 sndstat_get_devs(struct sndstat_file *pf, void *arg_buf, size_t *arg_nbytes) 753 { 754 int err; 755 756 SNDSTAT_LOCK(); 757 sx_xlock(&pf->lock); 758 759 if (pf->devs_nvlbuf == NULL) { 760 nvlist_t *nvl; 761 void *nvlbuf; 762 size_t nbytes; 763 int err; 764 765 sx_xunlock(&pf->lock); 766 767 err = sndstat_create_devs_nvlist(&nvl); 768 if (err) { 769 SNDSTAT_UNLOCK(); 770 return (err); 771 } 772 773 sx_xlock(&pf->lock); 774 775 nvlbuf = nvlist_pack(nvl, &nbytes); 776 err = nvlist_error(nvl); 777 nvlist_destroy(nvl); 778 if (nvlbuf == NULL || err != 0) { 779 SNDSTAT_UNLOCK(); 780 sx_xunlock(&pf->lock); 781 if (err == 0) 782 return (ENOMEM); 783 return (err); 784 } 785 786 free(pf->devs_nvlbuf, M_NVLIST); 787 pf->devs_nvlbuf = nvlbuf; 788 pf->devs_nbytes = nbytes; 789 } 790 791 SNDSTAT_UNLOCK(); 792 793 if (*arg_nbytes == 0) { 794 *arg_nbytes = pf->devs_nbytes; 795 err = 0; 796 goto done; 797 } 798 if (*arg_nbytes < pf->devs_nbytes) { 799 *arg_nbytes = 0; 800 err = 0; 801 goto done; 802 } 803 804 err = copyout(pf->devs_nvlbuf, arg_buf, pf->devs_nbytes); 805 if (err) 806 goto done; 807 808 *arg_nbytes = pf->devs_nbytes; 809 810 free(pf->devs_nvlbuf, M_NVLIST); 811 pf->devs_nvlbuf = NULL; 812 pf->devs_nbytes = 0; 813 814 done: 815 sx_unlock(&pf->lock); 816 return (err); 817 } 818 819 static int 820 sndstat_unpack_user_nvlbuf(const void *unvlbuf, size_t nbytes, nvlist_t **nvl) 821 { 822 void *nvlbuf; 823 int err; 824 825 nvlbuf = malloc(nbytes, M_DEVBUF, M_WAITOK); 826 err = copyin(unvlbuf, nvlbuf, nbytes); 827 if (err != 0) { 828 free(nvlbuf, M_DEVBUF); 829 return (err); 830 } 831 *nvl = nvlist_unpack(nvlbuf, nbytes, 0); 832 free(nvlbuf, M_DEVBUF); 833 if (*nvl == NULL) { 834 return (EINVAL); 835 } 836 837 return (0); 838 } 839 840 static bool 841 sndstat_diinfo_is_sane(const nvlist_t *diinfo) 842 { 843 if (!(nvlist_exists_number(diinfo, SNDST_DSPS_INFO_MIN_RATE) && 844 nvlist_exists_number(diinfo, SNDST_DSPS_INFO_MAX_RATE) && 845 nvlist_exists_number(diinfo, SNDST_DSPS_INFO_FORMATS) && 846 nvlist_exists_number(diinfo, SNDST_DSPS_INFO_MIN_CHN) && 847 nvlist_exists_number(diinfo, SNDST_DSPS_INFO_MAX_CHN))) 848 return (false); 849 return (true); 850 } 851 852 static bool 853 sndstat_dsp_nvlist_is_sane(const nvlist_t *nvlist) 854 { 855 if (!(nvlist_exists_string(nvlist, SNDST_DSPS_DEVNODE) && 856 nvlist_exists_string(nvlist, SNDST_DSPS_DESC) && 857 nvlist_exists_number(nvlist, SNDST_DSPS_PCHAN) && 858 nvlist_exists_number(nvlist, SNDST_DSPS_RCHAN))) 859 return (false); 860 861 if (nvlist_get_number(nvlist, SNDST_DSPS_PCHAN) > 0) { 862 if (nvlist_exists_nvlist(nvlist, SNDST_DSPS_INFO_PLAY)) { 863 if (!sndstat_diinfo_is_sane(nvlist_get_nvlist(nvlist, 864 SNDST_DSPS_INFO_PLAY))) 865 return (false); 866 } else if (!(nvlist_exists_number(nvlist, "pminrate") && 867 nvlist_exists_number(nvlist, "pmaxrate") && 868 nvlist_exists_number(nvlist, "pfmts"))) 869 return (false); 870 } 871 872 if (nvlist_get_number(nvlist, SNDST_DSPS_RCHAN) > 0) { 873 if (nvlist_exists_nvlist(nvlist, SNDST_DSPS_INFO_REC)) { 874 if (!sndstat_diinfo_is_sane(nvlist_get_nvlist(nvlist, 875 SNDST_DSPS_INFO_REC))) 876 return (false); 877 } else if (!(nvlist_exists_number(nvlist, "rminrate") && 878 nvlist_exists_number(nvlist, "rmaxrate") && 879 nvlist_exists_number(nvlist, "rfmts"))) 880 return (false); 881 } 882 883 return (true); 884 885 } 886 887 static void 888 sndstat_get_diinfo_nv(const nvlist_t *nv, uint32_t *min_rate, 889 uint32_t *max_rate, uint32_t *formats, uint32_t *min_chn, 890 uint32_t *max_chn) 891 { 892 *min_rate = nvlist_get_number(nv, SNDST_DSPS_INFO_MIN_RATE); 893 *max_rate = nvlist_get_number(nv, SNDST_DSPS_INFO_MAX_RATE); 894 *formats = nvlist_get_number(nv, SNDST_DSPS_INFO_FORMATS); 895 *min_chn = nvlist_get_number(nv, SNDST_DSPS_INFO_MIN_CHN); 896 *max_chn = nvlist_get_number(nv, SNDST_DSPS_INFO_MAX_CHN); 897 } 898 899 static int 900 sndstat_dsp_unpack_nvlist(const nvlist_t *nvlist, struct sndstat_userdev *ud) 901 { 902 const char *nameunit, *devnode, *desc; 903 unsigned int pchan, rchan; 904 uint32_t pminrate = 0, pmaxrate = 0; 905 uint32_t rminrate = 0, rmaxrate = 0; 906 uint32_t pfmts = 0, rfmts = 0; 907 uint32_t pminchn = 0, pmaxchn = 0; 908 uint32_t rminchn = 0, rmaxchn = 0; 909 nvlist_t *provider_nvl = NULL; 910 const nvlist_t *diinfo; 911 const char *provider; 912 913 devnode = nvlist_get_string(nvlist, SNDST_DSPS_DEVNODE); 914 if (nvlist_exists_string(nvlist, SNDST_DSPS_NAMEUNIT)) 915 nameunit = nvlist_get_string(nvlist, SNDST_DSPS_NAMEUNIT); 916 else 917 nameunit = devnode; 918 desc = nvlist_get_string(nvlist, SNDST_DSPS_DESC); 919 pchan = nvlist_get_number(nvlist, SNDST_DSPS_PCHAN); 920 rchan = nvlist_get_number(nvlist, SNDST_DSPS_RCHAN); 921 if (pchan != 0) { 922 if (nvlist_exists_nvlist(nvlist, SNDST_DSPS_INFO_PLAY)) { 923 diinfo = nvlist_get_nvlist(nvlist, 924 SNDST_DSPS_INFO_PLAY); 925 sndstat_get_diinfo_nv(diinfo, &pminrate, &pmaxrate, 926 &pfmts, &pminchn, &pmaxchn); 927 } else { 928 pminrate = nvlist_get_number(nvlist, "pminrate"); 929 pmaxrate = nvlist_get_number(nvlist, "pmaxrate"); 930 pfmts = nvlist_get_number(nvlist, "pfmts"); 931 } 932 } 933 if (rchan != 0) { 934 if (nvlist_exists_nvlist(nvlist, SNDST_DSPS_INFO_REC)) { 935 diinfo = nvlist_get_nvlist(nvlist, 936 SNDST_DSPS_INFO_REC); 937 sndstat_get_diinfo_nv(diinfo, &rminrate, &rmaxrate, 938 &rfmts, &rminchn, &rmaxchn); 939 } else { 940 rminrate = nvlist_get_number(nvlist, "rminrate"); 941 rmaxrate = nvlist_get_number(nvlist, "rmaxrate"); 942 rfmts = nvlist_get_number(nvlist, "rfmts"); 943 } 944 } 945 946 provider = dnvlist_get_string(nvlist, SNDST_DSPS_PROVIDER, ""); 947 if (provider[0] == '\0') 948 provider = NULL; 949 950 if (provider != NULL && 951 nvlist_exists_nvlist(nvlist, SNDST_DSPS_PROVIDER_INFO)) { 952 provider_nvl = nvlist_clone( 953 nvlist_get_nvlist(nvlist, SNDST_DSPS_PROVIDER_INFO)); 954 if (provider_nvl == NULL) 955 return (ENOMEM); 956 } 957 958 ud->provider = (provider != NULL) ? strdup(provider, M_DEVBUF) : NULL; 959 ud->devnode = strdup(devnode, M_DEVBUF); 960 ud->nameunit = strdup(nameunit, M_DEVBUF); 961 ud->desc = strdup(desc, M_DEVBUF); 962 ud->pchan = pchan; 963 ud->rchan = rchan; 964 ud->info_play.min_rate = pminrate; 965 ud->info_play.max_rate = pmaxrate; 966 ud->info_play.formats = pfmts; 967 ud->info_play.min_chn = pminchn; 968 ud->info_play.max_chn = pmaxchn; 969 ud->info_rec.min_rate = rminrate; 970 ud->info_rec.max_rate = rmaxrate; 971 ud->info_rec.formats = rfmts; 972 ud->info_rec.min_chn = rminchn; 973 ud->info_rec.max_chn = rmaxchn; 974 ud->provider_nvl = provider_nvl; 975 return (0); 976 } 977 978 static int 979 sndstat_add_user_devs(struct sndstat_file *pf, void *nvlbuf, size_t nbytes) 980 { 981 int err; 982 nvlist_t *nvl = NULL; 983 const nvlist_t * const *dsps; 984 size_t i, ndsps; 985 986 if ((pf->fflags & FWRITE) == 0) { 987 err = EPERM; 988 goto done; 989 } 990 991 if (nbytes > SNDST_UNVLBUF_MAX) { 992 err = ENOMEM; 993 goto done; 994 } 995 996 err = sndstat_unpack_user_nvlbuf(nvlbuf, nbytes, &nvl); 997 if (err != 0) 998 goto done; 999 1000 if (!nvlist_exists_nvlist_array(nvl, SNDST_DSPS)) { 1001 err = EINVAL; 1002 goto done; 1003 } 1004 dsps = nvlist_get_nvlist_array(nvl, SNDST_DSPS, &ndsps); 1005 for (i = 0; i < ndsps; i++) { 1006 if (!sndstat_dsp_nvlist_is_sane(dsps[i])) { 1007 err = EINVAL; 1008 goto done; 1009 } 1010 } 1011 sx_xlock(&pf->lock); 1012 for (i = 0; i < ndsps; i++) { 1013 struct sndstat_userdev *ud = 1014 malloc(sizeof(*ud), M_DEVBUF, M_WAITOK); 1015 err = sndstat_dsp_unpack_nvlist(dsps[i], ud); 1016 if (err) { 1017 sx_unlock(&pf->lock); 1018 goto done; 1019 } 1020 TAILQ_INSERT_TAIL(&pf->userdev_list, ud, link); 1021 } 1022 sx_unlock(&pf->lock); 1023 1024 done: 1025 nvlist_destroy(nvl); 1026 return (err); 1027 } 1028 1029 static int 1030 sndstat_flush_user_devs(struct sndstat_file *pf) 1031 { 1032 if ((pf->fflags & FWRITE) == 0) 1033 return (EPERM); 1034 1035 sx_xlock(&pf->lock); 1036 sndstat_remove_all_userdevs(pf); 1037 sx_xunlock(&pf->lock); 1038 1039 return (0); 1040 } 1041 1042 static int 1043 sndstat_ioctl( 1044 struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td) 1045 { 1046 int err; 1047 struct sndstat_file *pf; 1048 struct sndstioc_nv_arg *arg; 1049 #ifdef COMPAT_FREEBSD32 1050 struct sndstioc_nv_arg32 *arg32; 1051 size_t nbytes; 1052 #endif 1053 1054 err = devfs_get_cdevpriv((void **)&pf); 1055 if (err != 0) 1056 return (err); 1057 1058 switch (cmd) { 1059 case SNDSTIOC_GET_DEVS: 1060 arg = (struct sndstioc_nv_arg *)data; 1061 err = sndstat_get_devs(pf, arg->buf, &arg->nbytes); 1062 break; 1063 #ifdef COMPAT_FREEBSD32 1064 case SNDSTIOC_GET_DEVS32: 1065 arg32 = (struct sndstioc_nv_arg32 *)data; 1066 nbytes = arg32->nbytes; 1067 err = sndstat_get_devs(pf, (void *)(uintptr_t)arg32->buf, 1068 &nbytes); 1069 if (err == 0) { 1070 KASSERT(nbytes < UINT_MAX, ("impossibly many bytes")); 1071 arg32->nbytes = nbytes; 1072 } 1073 break; 1074 #endif 1075 case SNDSTIOC_ADD_USER_DEVS: 1076 arg = (struct sndstioc_nv_arg *)data; 1077 err = sndstat_add_user_devs(pf, arg->buf, arg->nbytes); 1078 break; 1079 #ifdef COMPAT_FREEBSD32 1080 case SNDSTIOC_ADD_USER_DEVS32: 1081 arg32 = (struct sndstioc_nv_arg32 *)data; 1082 err = sndstat_add_user_devs(pf, (void *)(uintptr_t)arg32->buf, 1083 arg32->nbytes); 1084 break; 1085 #endif 1086 case SNDSTIOC_REFRESH_DEVS: 1087 err = sndstat_refresh_devs(pf); 1088 break; 1089 case SNDSTIOC_FLUSH_USER_DEVS: 1090 err = sndstat_flush_user_devs(pf); 1091 break; 1092 default: 1093 err = ENODEV; 1094 } 1095 1096 return (err); 1097 } 1098 1099 static struct sndstat_userdev * 1100 sndstat_line2userdev(struct sndstat_file *pf, const char *line, int n) 1101 { 1102 struct sndstat_userdev *ud; 1103 const char *e, *m; 1104 1105 ud = malloc(sizeof(*ud), M_DEVBUF, M_WAITOK|M_ZERO); 1106 1107 ud->provider = NULL; 1108 ud->provider_nvl = NULL; 1109 e = strchr(line, ':'); 1110 if (e == NULL) 1111 goto fail; 1112 ud->nameunit = strndup(line, e - line, M_DEVBUF); 1113 ud->devnode = malloc(e - line + 1, M_DEVBUF, M_WAITOK | M_ZERO); 1114 strlcat(ud->devnode, ud->nameunit, e - line + 1); 1115 line = e + 1; 1116 1117 e = strchr(line, '<'); 1118 if (e == NULL) 1119 goto fail; 1120 line = e + 1; 1121 e = strrchr(line, '>'); 1122 if (e == NULL) 1123 goto fail; 1124 ud->desc = strndup(line, e - line, M_DEVBUF); 1125 line = e + 1; 1126 1127 e = strchr(line, '('); 1128 if (e == NULL) 1129 goto fail; 1130 line = e + 1; 1131 e = strrchr(line, ')'); 1132 if (e == NULL) 1133 goto fail; 1134 m = strstr(line, "play"); 1135 if (m != NULL && m < e) 1136 ud->pchan = 1; 1137 m = strstr(line, "rec"); 1138 if (m != NULL && m < e) 1139 ud->rchan = 1; 1140 1141 return (ud); 1142 1143 fail: 1144 free(ud->nameunit, M_DEVBUF); 1145 free(ud->devnode, M_DEVBUF); 1146 free(ud->desc, M_DEVBUF); 1147 free(ud, M_DEVBUF); 1148 return (NULL); 1149 } 1150 1151 /************************************************************************/ 1152 1153 int 1154 sndstat_register(device_t dev, char *str) 1155 { 1156 struct sndstat_entry *ent; 1157 struct sndstat_entry *pre; 1158 const char *devtype; 1159 int type, unit; 1160 1161 unit = device_get_unit(dev); 1162 devtype = device_get_name(dev); 1163 if (!strcmp(devtype, "pcm")) 1164 type = SS_TYPE_PCM; 1165 else if (!strcmp(devtype, "midi")) 1166 type = SS_TYPE_MIDI; 1167 else 1168 return (EINVAL); 1169 1170 ent = malloc(sizeof *ent, M_DEVBUF, M_WAITOK | M_ZERO); 1171 ent->dev = dev; 1172 ent->str = str; 1173 ent->type = type; 1174 ent->unit = unit; 1175 1176 SNDSTAT_LOCK(); 1177 /* sorted list insertion */ 1178 TAILQ_FOREACH(pre, &sndstat_devlist, link) { 1179 if (pre->unit > unit) 1180 break; 1181 else if (pre->unit < unit) 1182 continue; 1183 if (pre->type > type) 1184 break; 1185 else if (pre->type < unit) 1186 continue; 1187 } 1188 if (pre == NULL) { 1189 TAILQ_INSERT_TAIL(&sndstat_devlist, ent, link); 1190 } else { 1191 TAILQ_INSERT_BEFORE(pre, ent, link); 1192 } 1193 SNDSTAT_UNLOCK(); 1194 1195 return (0); 1196 } 1197 1198 int 1199 sndstat_unregister(device_t dev) 1200 { 1201 struct sndstat_entry *ent; 1202 int error = ENXIO; 1203 1204 SNDSTAT_LOCK(); 1205 TAILQ_FOREACH(ent, &sndstat_devlist, link) { 1206 if (ent->dev == dev) { 1207 TAILQ_REMOVE(&sndstat_devlist, ent, link); 1208 free(ent, M_DEVBUF); 1209 error = 0; 1210 break; 1211 } 1212 } 1213 SNDSTAT_UNLOCK(); 1214 1215 return (error); 1216 } 1217 1218 /************************************************************************/ 1219 1220 static int 1221 sndstat_prepare_pcm(struct sbuf *s, device_t dev, int verbose) 1222 { 1223 struct snddev_info *d; 1224 struct pcm_channel *c; 1225 struct pcm_feeder *f; 1226 1227 d = device_get_softc(dev); 1228 PCM_BUSYASSERT(d); 1229 1230 if (CHN_EMPTY(d, channels.pcm)) { 1231 sbuf_printf(s, " (mixer only)"); 1232 return (0); 1233 } 1234 1235 if (verbose < 1) { 1236 sbuf_printf(s, " (%s%s%s", 1237 d->playcount ? "play" : "", 1238 (d->playcount && d->reccount) ? "/" : "", 1239 d->reccount ? "rec" : ""); 1240 } else { 1241 sbuf_printf(s, " (%dp:%dv/%dr:%dv", 1242 d->playcount, d->pvchancount, 1243 d->reccount, d->rvchancount); 1244 } 1245 sbuf_printf(s, "%s)%s", 1246 ((d->playcount != 0 && d->reccount != 0) && 1247 (d->flags & SD_F_SIMPLEX)) ? " simplex" : "", 1248 (device_get_unit(dev) == snd_unit) ? " default" : ""); 1249 1250 if (verbose <= 1) 1251 return (0); 1252 1253 sbuf_printf(s, "\n\t"); 1254 sbuf_printf(s, "snddev flags=0x%b", d->flags, SD_F_BITS); 1255 1256 CHN_FOREACH(c, d, channels.pcm) { 1257 KASSERT(c->bufhard != NULL && c->bufsoft != NULL, 1258 ("hosed pcm channel setup")); 1259 1260 CHN_LOCK(c); 1261 1262 sbuf_printf(s, "\n\t"); 1263 1264 sbuf_printf(s, "%s[%s]: ", 1265 (c->parentchannel != NULL) ? 1266 c->parentchannel->name : "", c->name); 1267 sbuf_printf(s, "spd %d", c->speed); 1268 if (c->speed != sndbuf_getspd(c->bufhard)) { 1269 sbuf_printf(s, "/%d", 1270 sndbuf_getspd(c->bufhard)); 1271 } 1272 sbuf_printf(s, ", fmt 0x%08x", c->format); 1273 if (c->format != sndbuf_getfmt(c->bufhard)) { 1274 sbuf_printf(s, "/0x%08x", 1275 sndbuf_getfmt(c->bufhard)); 1276 } 1277 sbuf_printf(s, ", flags 0x%08x, 0x%08x", 1278 c->flags, c->feederflags); 1279 if (c->pid != -1) { 1280 sbuf_printf(s, ", pid %d (%s)", 1281 c->pid, c->comm); 1282 } 1283 sbuf_printf(s, "\n\t"); 1284 1285 sbuf_printf(s, "\tinterrupts %d, ", c->interrupts); 1286 1287 if (c->direction == PCMDIR_REC) { 1288 sbuf_printf(s, 1289 "overruns %d, feed %u, hfree %d, " 1290 "sfree %d\n\t\t[b:%d/%d/%d|bs:%d/%d/%d]", 1291 c->xruns, c->feedcount, 1292 sndbuf_getfree(c->bufhard), 1293 sndbuf_getfree(c->bufsoft), 1294 sndbuf_getsize(c->bufhard), 1295 sndbuf_getblksz(c->bufhard), 1296 sndbuf_getblkcnt(c->bufhard), 1297 sndbuf_getsize(c->bufsoft), 1298 sndbuf_getblksz(c->bufsoft), 1299 sndbuf_getblkcnt(c->bufsoft)); 1300 } else { 1301 sbuf_printf(s, 1302 "underruns %d, feed %u, ready %d " 1303 "\n\t\t[b:%d/%d/%d|bs:%d/%d/%d]", 1304 c->xruns, c->feedcount, 1305 sndbuf_getready(c->bufsoft), 1306 sndbuf_getsize(c->bufhard), 1307 sndbuf_getblksz(c->bufhard), 1308 sndbuf_getblkcnt(c->bufhard), 1309 sndbuf_getsize(c->bufsoft), 1310 sndbuf_getblksz(c->bufsoft), 1311 sndbuf_getblkcnt(c->bufsoft)); 1312 } 1313 sbuf_printf(s, "\n\t"); 1314 1315 sbuf_printf(s, "\tchannel flags=0x%b", c->flags, CHN_F_BITS); 1316 sbuf_printf(s, "\n\t"); 1317 1318 if (c->parentchannel != NULL) { 1319 sbuf_printf(s, "\t{%s}", (c->direction == PCMDIR_REC) ? 1320 c->parentchannel->name : "userland"); 1321 } else { 1322 sbuf_printf(s, "\t{%s}", (c->direction == PCMDIR_REC) ? 1323 "hardware" : "userland"); 1324 } 1325 sbuf_printf(s, " -> "); 1326 f = c->feeder; 1327 while (f->source != NULL) 1328 f = f->source; 1329 while (f != NULL) { 1330 sbuf_printf(s, "%s", f->class->name); 1331 if (f->desc->type == FEEDER_FORMAT) { 1332 sbuf_printf(s, "(0x%08x -> 0x%08x)", 1333 f->desc->in, f->desc->out); 1334 } else if (f->desc->type == FEEDER_MATRIX) { 1335 sbuf_printf(s, "(%d.%d -> %d.%d)", 1336 AFMT_CHANNEL(f->desc->in) - 1337 AFMT_EXTCHANNEL(f->desc->in), 1338 AFMT_EXTCHANNEL(f->desc->in), 1339 AFMT_CHANNEL(f->desc->out) - 1340 AFMT_EXTCHANNEL(f->desc->out), 1341 AFMT_EXTCHANNEL(f->desc->out)); 1342 } else if (f->desc->type == FEEDER_RATE) { 1343 sbuf_printf(s, 1344 "(0x%08x q:%d %d -> %d)", 1345 f->desc->out, 1346 FEEDER_GET(f, FEEDRATE_QUALITY), 1347 FEEDER_GET(f, FEEDRATE_SRC), 1348 FEEDER_GET(f, FEEDRATE_DST)); 1349 } else { 1350 sbuf_printf(s, "(0x%08x)", 1351 f->desc->out); 1352 } 1353 sbuf_printf(s, " -> "); 1354 f = f->parent; 1355 } 1356 if (c->parentchannel != NULL) { 1357 sbuf_printf(s, "{%s}", (c->direction == PCMDIR_REC) ? 1358 "userland" : c->parentchannel->name); 1359 } else { 1360 sbuf_printf(s, "{%s}", (c->direction == PCMDIR_REC) ? 1361 "userland" : "hardware"); 1362 } 1363 1364 CHN_UNLOCK(c); 1365 } 1366 1367 return (0); 1368 } 1369 1370 static int 1371 sndstat_prepare(struct sndstat_file *pf_self) 1372 { 1373 struct sbuf *s = &pf_self->sbuf; 1374 struct sndstat_entry *ent; 1375 struct snddev_info *d; 1376 struct sndstat_file *pf; 1377 int k; 1378 1379 /* make sure buffer is reset */ 1380 sbuf_clear(s); 1381 1382 if (snd_verbose > 0) 1383 sbuf_printf(s, "FreeBSD Audio Driver\n"); 1384 1385 /* generate list of installed devices */ 1386 k = 0; 1387 TAILQ_FOREACH(ent, &sndstat_devlist, link) { 1388 d = device_get_softc(ent->dev); 1389 if (!PCM_REGISTERED(d)) 1390 continue; 1391 if (!k++) 1392 sbuf_printf(s, "Installed devices:\n"); 1393 sbuf_printf(s, "%s:", device_get_nameunit(ent->dev)); 1394 sbuf_printf(s, " <%s>", device_get_desc(ent->dev)); 1395 if (snd_verbose > 0) 1396 sbuf_printf(s, " %s", ent->str); 1397 /* XXX Need Giant magic entry ??? */ 1398 PCM_ACQUIRE_QUICK(d); 1399 sndstat_prepare_pcm(s, ent->dev, snd_verbose); 1400 PCM_RELEASE_QUICK(d); 1401 sbuf_printf(s, "\n"); 1402 } 1403 if (k == 0) 1404 sbuf_printf(s, "No devices installed.\n"); 1405 1406 /* append any input from userspace */ 1407 k = 0; 1408 TAILQ_FOREACH(pf, &sndstat_filelist, entry) { 1409 struct sndstat_userdev *ud; 1410 1411 if (pf == pf_self) 1412 continue; 1413 sx_xlock(&pf->lock); 1414 if (TAILQ_EMPTY(&pf->userdev_list)) { 1415 sx_unlock(&pf->lock); 1416 continue; 1417 } 1418 if (!k++) 1419 sbuf_printf(s, "Installed devices from userspace:\n"); 1420 TAILQ_FOREACH(ud, &pf->userdev_list, link) { 1421 const char *caps = (ud->pchan && ud->rchan) ? 1422 "play/rec" : 1423 (ud->pchan ? "play" : (ud->rchan ? "rec" : "")); 1424 sbuf_printf(s, "%s: <%s>", ud->nameunit, ud->desc); 1425 sbuf_printf(s, " (%s)", caps); 1426 sbuf_printf(s, "\n"); 1427 } 1428 sx_unlock(&pf->lock); 1429 } 1430 if (k == 0) 1431 sbuf_printf(s, "No devices installed from userspace.\n"); 1432 1433 sbuf_finish(s); 1434 return (sbuf_len(s)); 1435 } 1436 1437 static void 1438 sndstat_sysinit(void *p) 1439 { 1440 sx_init(&sndstat_lock, "sndstat lock"); 1441 sndstat_dev = make_dev(&sndstat_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644, 1442 "sndstat"); 1443 } 1444 SYSINIT(sndstat_sysinit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysinit, NULL); 1445 1446 static void 1447 sndstat_sysuninit(void *p) 1448 { 1449 if (sndstat_dev != NULL) { 1450 /* destroy_dev() will wait for all references to go away */ 1451 destroy_dev(sndstat_dev); 1452 } 1453 sx_destroy(&sndstat_lock); 1454 } 1455 SYSUNINIT(sndstat_sysuninit, SI_SUB_DRIVERS, SI_ORDER_FIRST, sndstat_sysuninit, NULL); 1456