sound.h revision 331722
1/*- 2 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 3 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> 4 * Copyright (c) 1995 Hannu Savolainen 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: stable/11/sys/dev/sound/pcm/sound.h 331722 2018-03-29 02:50:57Z eadler $ 29 */ 30 31/* 32 * first, include kernel header files. 33 */ 34 35#ifndef _OS_H_ 36#define _OS_H_ 37 38#ifdef _KERNEL 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/ioccom.h> 42#include <sys/filio.h> 43#include <sys/sockio.h> 44#include <sys/fcntl.h> 45#include <sys/selinfo.h> 46#include <sys/proc.h> 47#include <sys/kernel.h> /* for DATA_SET */ 48#include <sys/module.h> 49#include <sys/conf.h> 50#include <sys/file.h> 51#include <sys/uio.h> 52#include <sys/syslog.h> 53#include <sys/errno.h> 54#include <sys/malloc.h> 55#include <sys/bus.h> 56#include <machine/resource.h> 57#include <machine/bus.h> 58#include <sys/rman.h> 59#include <sys/limits.h> 60#include <sys/mman.h> 61#include <sys/poll.h> 62#include <sys/sbuf.h> 63#include <sys/soundcard.h> 64#include <sys/sysctl.h> 65#include <sys/kobj.h> 66#include <vm/vm.h> 67#include <vm/pmap.h> 68 69#include <sys/lock.h> 70#include <sys/mutex.h> 71#include <sys/condvar.h> 72 73#ifndef KOBJMETHOD_END 74#define KOBJMETHOD_END { NULL, NULL } 75#endif 76 77struct pcm_channel; 78struct pcm_feeder; 79struct snd_dbuf; 80struct snd_mixer; 81 82#include <dev/sound/pcm/buffer.h> 83#include <dev/sound/pcm/matrix.h> 84#include <dev/sound/pcm/matrix_map.h> 85#include <dev/sound/pcm/channel.h> 86#include <dev/sound/pcm/feeder.h> 87#include <dev/sound/pcm/mixer.h> 88#include <dev/sound/pcm/dsp.h> 89#include <dev/sound/clone.h> 90#include <dev/sound/unit.h> 91 92#define PCM_SOFTC_SIZE (sizeof(struct snddev_info)) 93 94#define SND_STATUSLEN 64 95 96#define SOUND_MODVER 5 97 98#define SOUND_MINVER SOUND_MODVER 99#define SOUND_PREFVER SOUND_MODVER 100#define SOUND_MAXVER SOUND_MODVER 101 102/* 103 * We're abusing the fact that MAXMINOR still have enough room 104 * for our bit twiddling and nobody ever need 512 unique soundcards, 105 * 32 unique device types and 1024 unique cloneable devices for the 106 * next 100 years... 107 */ 108 109#define PCMMAXUNIT (snd_max_u()) 110#define PCMMAXDEV (snd_max_d()) 111#define PCMMAXCHAN (snd_max_c()) 112 113#define PCMMAXCLONE PCMMAXCHAN 114 115#define PCMUNIT(x) (snd_unit2u(dev2unit(x))) 116#define PCMDEV(x) (snd_unit2d(dev2unit(x))) 117#define PCMCHAN(x) (snd_unit2c(dev2unit(x))) 118 119/* XXX unit2minor compat */ 120#define PCMMINOR(x) (x) 121 122/* 123 * By design, limit possible channels for each direction. 124 */ 125#define SND_MAXHWCHAN 256 126#define SND_MAXVCHANS SND_MAXHWCHAN 127 128#define SD_F_SIMPLEX 0x00000001 129#define SD_F_AUTOVCHAN 0x00000002 130#define SD_F_SOFTPCMVOL 0x00000004 131/* 132 * Obsolete due to better matrixing 133 */ 134#if 0 135#define SD_F_PSWAPLR 0x00000008 136#define SD_F_RSWAPLR 0x00000010 137#endif 138#define SD_F_DYING 0x00000008 139#define SD_F_SUICIDE 0x00000010 140#define SD_F_BUSY 0x00000020 141#define SD_F_MPSAFE 0x00000040 142#define SD_F_REGISTERED 0x00000080 143#define SD_F_BITPERFECT 0x00000100 144#define SD_F_VPC 0x00000200 /* volume-per-channel */ 145#define SD_F_EQ 0x00000400 /* EQ */ 146#define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */ 147#define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */ 148#define SD_F_EQ_PC 0x00002000 /* EQ per-channel */ 149 150#define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED) 151#define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \ 152 SD_F_EQ_BYPASSED | SD_F_EQ_PC) 153 154#define SD_F_PRIO_RD 0x10000000 155#define SD_F_PRIO_WR 0x20000000 156#define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR) 157#define SD_F_DIR_SET 0x40000000 158#define SD_F_TRANSIENT 0xf0000000 159 160#define SD_F_BITS "\020" \ 161 "\001SIMPLEX" \ 162 "\002AUTOVCHAN" \ 163 "\003SOFTPCMVOL" \ 164 "\004DYING" \ 165 "\005SUICIDE" \ 166 "\006BUSY" \ 167 "\007MPSAFE" \ 168 "\010REGISTERED" \ 169 "\011BITPERFECT" \ 170 "\012VPC" \ 171 "\013EQ" \ 172 "\014EQ_ENABLED" \ 173 "\015EQ_BYPASSED" \ 174 "\016EQ_PC" \ 175 "\035PRIO_RD" \ 176 "\036PRIO_WR" \ 177 "\037DIR_SET" 178 179#define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \ 180 !((x)->flags & SD_F_DYING)) 181#define PCM_REGISTERED(x) (PCM_ALIVE(x) && \ 182 ((x)->flags & SD_F_REGISTERED)) 183 184/* many variables should be reduced to a range. Here define a macro */ 185#define RANGE(var, low, high) (var) = \ 186 (((var)<(low))? (low) : ((var)>(high))? (high) : (var)) 187#define DSP_BUFFSIZE (8192) 188 189/* make figuring out what a format is easier. got AFMT_STEREO already */ 190#define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE) 191#define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE) 192#define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE) 193#define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW) 194#define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8) 195#define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \ 196 AFMT_S16_LE | AFMT_S16_BE | AFMT_S8) 197#define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \ 198 AFMT_S16_BE | AFMT_U16_BE) 199 200#define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \ 201 AFMT_32BIT) 202 203/* Supported vchan mixing formats */ 204#define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711) 205 206#define AFMT_PASSTHROUGH AFMT_AC3 207#define AFMT_PASSTHROUGH_RATE 48000 208#define AFMT_PASSTHROUGH_CHANNEL 2 209#define AFMT_PASSTHROUGH_EXTCHANNEL 0 210 211/* 212 * We're simply using unused, contiguous bits from various AFMT_ definitions. 213 * ~(0xb00ff7ff) 214 */ 215#define AFMT_ENCODING_MASK 0xf00fffff 216#define AFMT_CHANNEL_MASK 0x07f00000 217#define AFMT_CHANNEL_SHIFT 20 218#define AFMT_CHANNEL_MAX 0x7f 219#define AFMT_EXTCHANNEL_MASK 0x08000000 220#define AFMT_EXTCHANNEL_SHIFT 27 221#define AFMT_EXTCHANNEL_MAX 1 222 223#define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK) 224 225#define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \ 226 AFMT_EXTCHANNEL_SHIFT) 227 228#define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \ 229 AFMT_CHANNEL_SHIFT) 230 231#define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \ 232 (((v) & AFMT_24BIT) ? 24 : \ 233 ((((v) & AFMT_16BIT) || \ 234 ((v) & AFMT_PASSTHROUGH)) ? 16 : 8))) 235 236#define AFMT_BPS(v) (AFMT_BIT(v) >> 3) 237#define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v)) 238 239#define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \ 240 (((c) << AFMT_CHANNEL_SHIFT) & \ 241 AFMT_CHANNEL_MASK) | \ 242 (((e) << AFMT_EXTCHANNEL_SHIFT) & \ 243 AFMT_EXTCHANNEL_MASK)) 244 245#define AFMT_U8_NE AFMT_U8 246#define AFMT_S8_NE AFMT_S8 247 248#define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE) 249 250#define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \ 251 AFMT_U24_NE | AFMT_U32_NE) 252 253/* 254 * Minor numbers for the sound driver. 255 * 256 * Unfortunately Creative called the codec chip of SB as a DSP. For this 257 * reason the /dev/dsp is reserved for digitized audio use. There is a 258 * device for true DSP processors but it will be called something else. 259 * In v3.0 it's /dev/sndproc but this could be a temporary solution. 260 */ 261 262#define SND_DEV_CTL 0 /* Control port /dev/mixer */ 263#define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */ 264#define SND_DEV_MIDIN 2 /* Raw midi access */ 265#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */ 266#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */ 267#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */ 268#define SND_DEV_STATUS 6 /* /dev/sndstat */ 269 /* #7 not in use now. */ 270#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */ 271#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */ 272#define SND_DEV_PSS SND_DEV_SNDPROC /* ? */ 273#define SND_DEV_NORESET 10 274 275#define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */ 276#define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */ 277#define SND_DEV_DSPHW_REC 13 /* specific record channel */ 278#define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */ 279 280#define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */ 281 282/* 283 * OSSv4 compatible device. For now, it serve no purpose and 284 * the cloning itself will forward the request to ordinary /dev/dsp 285 * instead. 286 */ 287#define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */ 288#define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */ 289#define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */ 290#define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */ 291#define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */ 292 293#define SND_DEV_LAST SND_DEV_DSP_SPDIFIN 294#define SND_DEV_MAX PCMMAXDEV 295 296#define DSP_DEFAULT_SPEED 8000 297 298#define ON 1 299#define OFF 0 300 301extern int pcm_veto_load; 302extern int snd_unit; 303extern int snd_maxautovchans; 304extern int snd_verbose; 305extern devclass_t pcm_devclass; 306extern struct unrhdr *pcmsg_unrhdr; 307 308/* 309 * some macros for debugging purposes 310 * DDB/DEB to enable/disable debugging stuff 311 * BVDDB to enable debugging when bootverbose 312 */ 313#define BVDDB(x) if (bootverbose) x 314 315#ifndef DEB 316#define DEB(x) 317#endif 318 319SYSCTL_DECL(_hw_snd); 320 321int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num); 322int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, 323 pid_t pid, char *comm, int devunit); 324int pcm_chnrelease(struct pcm_channel *c); 325int pcm_chnref(struct pcm_channel *c, int ref); 326int pcm_inprog(struct snddev_info *d, int delta); 327 328struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo); 329int pcm_chn_destroy(struct pcm_channel *ch); 330int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch); 331int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch); 332 333int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo); 334unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz); 335int pcm_register(device_t dev, void *devinfo, int numplay, int numrec); 336int pcm_unregister(device_t dev); 337int pcm_setstatus(device_t dev, char *str); 338u_int32_t pcm_getflags(device_t dev); 339void pcm_setflags(device_t dev, u_int32_t val); 340void *pcm_getdevinfo(device_t dev); 341 342 343int snd_setup_intr(device_t dev, struct resource *res, int flags, 344 driver_intr_t hand, void *param, void **cookiep); 345 346void *snd_mtxcreate(const char *desc, const char *type); 347void snd_mtxfree(void *m); 348void snd_mtxassert(void *m); 349#define snd_mtxlock(m) mtx_lock(m) 350#define snd_mtxunlock(m) mtx_unlock(m) 351 352typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose); 353int sndstat_register(device_t dev, char *str, sndstat_handler handler); 354int sndstat_registerfile(char *str); 355int sndstat_unregister(device_t dev); 356int sndstat_unregisterfile(char *str); 357 358#define SND_DECLARE_FILE(version) \ 359 _SND_DECLARE_FILE(__LINE__, version) 360 361#define _SND_DECLARE_FILE(uniq, version) \ 362 __SND_DECLARE_FILE(uniq, version) 363 364#define __SND_DECLARE_FILE(uniq, version) \ 365 static char sndstat_vinfo[] = version; \ 366 SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \ 367 SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo); 368 369/* usage of flags in device config entry (config file) */ 370#define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */ 371#define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */ 372 373/* ought to be made obsolete but still used by mss */ 374#define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */ 375#define DV_F_DEV_SHIFT 8 /* force device type/class */ 376 377/* 378 * this is rather kludgey- we need to duplicate these struct def'ns from sound.c 379 * so that the macro versions of pcm_{,un}lock can dereference them. 380 * we also have to do this now makedev() has gone away. 381 */ 382 383struct snddev_info { 384 struct { 385 struct { 386 SLIST_HEAD(, pcm_channel) head; 387 struct { 388 SLIST_HEAD(, pcm_channel) head; 389 } busy; 390 struct { 391 SLIST_HEAD(, pcm_channel) head; 392 } opened; 393 } pcm; 394 } channels; 395 TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool; 396 struct snd_clone *clones; 397 unsigned devcount, playcount, reccount, pvchancount, rvchancount ; 398 unsigned flags; 399 int inprog; 400 unsigned int bufsz; 401 void *devinfo; 402 device_t dev; 403 char status[SND_STATUSLEN]; 404 struct mtx *lock; 405 struct cdev *mixer_dev; 406 uint32_t pvchanrate, pvchanformat; 407 uint32_t rvchanrate, rvchanformat; 408 int32_t eqpreamp; 409 struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx; 410 struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree; 411 struct cv cv; 412}; 413 414void sound_oss_sysinfo(oss_sysinfo *); 415int sound_oss_card_info(oss_card_info *); 416 417#define PCM_LOCKOWNED(d) mtx_owned((d)->lock) 418#define PCM_LOCK(d) mtx_lock((d)->lock) 419#define PCM_UNLOCK(d) mtx_unlock((d)->lock) 420#define PCM_TRYLOCK(d) mtx_trylock((d)->lock) 421#define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED) 422#define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED) 423 424/* 425 * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these 426 * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you! 427 */ 428#ifdef SND_DIAGNOSTIC 429#define PCM_WAIT(x) do { \ 430 if (!PCM_LOCKOWNED(x)) \ 431 panic("%s(%d): [PCM WAIT] Mutex not owned!", \ 432 __func__, __LINE__); \ 433 while ((x)->flags & SD_F_BUSY) { \ 434 if (snd_verbose > 3) \ 435 device_printf((x)->dev, \ 436 "%s(%d): [PCM WAIT] calling cv_wait().\n", \ 437 __func__, __LINE__); \ 438 cv_wait(&(x)->cv, (x)->lock); \ 439 } \ 440} while (0) 441 442#define PCM_ACQUIRE(x) do { \ 443 if (!PCM_LOCKOWNED(x)) \ 444 panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \ 445 __func__, __LINE__); \ 446 if ((x)->flags & SD_F_BUSY) \ 447 panic("%s(%d): [PCM ACQUIRE] " \ 448 "Trying to acquire BUSY cv!", __func__, __LINE__); \ 449 (x)->flags |= SD_F_BUSY; \ 450} while (0) 451 452#define PCM_RELEASE(x) do { \ 453 if (!PCM_LOCKOWNED(x)) \ 454 panic("%s(%d): [PCM RELEASE] Mutex not owned!", \ 455 __func__, __LINE__); \ 456 if ((x)->flags & SD_F_BUSY) { \ 457 (x)->flags &= ~SD_F_BUSY; \ 458 if ((x)->cv.cv_waiters != 0) { \ 459 if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \ 460 device_printf((x)->dev, \ 461 "%s(%d): [PCM RELEASE] " \ 462 "cv_waiters=%d > 1!\n", \ 463 __func__, __LINE__, \ 464 (x)->cv.cv_waiters); \ 465 cv_broadcast(&(x)->cv); \ 466 } \ 467 } else \ 468 panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 469 __func__, __LINE__); \ 470} while (0) 471 472/* Quick version, for shorter path. */ 473#define PCM_ACQUIRE_QUICK(x) do { \ 474 if (PCM_LOCKOWNED(x)) \ 475 panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \ 476 __func__, __LINE__); \ 477 PCM_LOCK(x); \ 478 PCM_WAIT(x); \ 479 PCM_ACQUIRE(x); \ 480 PCM_UNLOCK(x); \ 481} while (0) 482 483#define PCM_RELEASE_QUICK(x) do { \ 484 if (PCM_LOCKOWNED(x)) \ 485 panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \ 486 __func__, __LINE__); \ 487 PCM_LOCK(x); \ 488 PCM_RELEASE(x); \ 489 PCM_UNLOCK(x); \ 490} while (0) 491 492#define PCM_BUSYASSERT(x) do { \ 493 if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \ 494 panic("%s(%d): [PCM BUSYASSERT] " \ 495 "Failed, snddev_info=%p", __func__, __LINE__, x); \ 496} while (0) 497 498#define PCM_GIANT_ENTER(x) do { \ 499 int _pcm_giant = 0; \ 500 if (PCM_LOCKOWNED(x)) \ 501 panic("%s(%d): [GIANT ENTER] PCM lock owned!", \ 502 __func__, __LINE__); \ 503 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 504 device_printf((x)->dev, \ 505 "%s(%d): [GIANT ENTER] Giant owned!\n", \ 506 __func__, __LINE__); \ 507 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 508 do { \ 509 mtx_lock(&Giant); \ 510 _pcm_giant = 1; \ 511 } while (0) 512 513#define PCM_GIANT_EXIT(x) do { \ 514 if (PCM_LOCKOWNED(x)) \ 515 panic("%s(%d): [GIANT EXIT] PCM lock owned!", \ 516 __func__, __LINE__); \ 517 if (!(_pcm_giant == 0 || _pcm_giant == 1)) \ 518 panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 519 __func__, __LINE__); \ 520 if ((x)->flags & SD_F_MPSAFE) { \ 521 if (_pcm_giant == 1) \ 522 panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 523 __func__, __LINE__); \ 524 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 525 device_printf((x)->dev, \ 526 "%s(%d): [GIANT EXIT] Giant owned!\n", \ 527 __func__, __LINE__); \ 528 } \ 529 if (_pcm_giant != 0) { \ 530 if (mtx_owned(&Giant) == 0) \ 531 panic("%s(%d): [GIANT EXIT] Giant not owned!", \ 532 __func__, __LINE__); \ 533 _pcm_giant = 0; \ 534 mtx_unlock(&Giant); \ 535 } \ 536} while (0) 537#else /* SND_DIAGNOSTIC */ 538#define PCM_WAIT(x) do { \ 539 PCM_LOCKASSERT(x); \ 540 while ((x)->flags & SD_F_BUSY) \ 541 cv_wait(&(x)->cv, (x)->lock); \ 542} while (0) 543 544#define PCM_ACQUIRE(x) do { \ 545 PCM_LOCKASSERT(x); \ 546 KASSERT(!((x)->flags & SD_F_BUSY), \ 547 ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \ 548 __func__, __LINE__)); \ 549 (x)->flags |= SD_F_BUSY; \ 550} while (0) 551 552#define PCM_RELEASE(x) do { \ 553 PCM_LOCKASSERT(x); \ 554 KASSERT((x)->flags & SD_F_BUSY, \ 555 ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 556 __func__, __LINE__)); \ 557 (x)->flags &= ~SD_F_BUSY; \ 558 if ((x)->cv.cv_waiters != 0) \ 559 cv_broadcast(&(x)->cv); \ 560} while (0) 561 562/* Quick version, for shorter path. */ 563#define PCM_ACQUIRE_QUICK(x) do { \ 564 PCM_UNLOCKASSERT(x); \ 565 PCM_LOCK(x); \ 566 PCM_WAIT(x); \ 567 PCM_ACQUIRE(x); \ 568 PCM_UNLOCK(x); \ 569} while (0) 570 571#define PCM_RELEASE_QUICK(x) do { \ 572 PCM_UNLOCKASSERT(x); \ 573 PCM_LOCK(x); \ 574 PCM_RELEASE(x); \ 575 PCM_UNLOCK(x); \ 576} while (0) 577 578#define PCM_BUSYASSERT(x) KASSERT(x != NULL && \ 579 ((x)->flags & SD_F_BUSY), \ 580 ("%s(%d): [PCM BUSYASSERT] " \ 581 "Failed, snddev_info=%p", \ 582 __func__, __LINE__, x)) 583 584#define PCM_GIANT_ENTER(x) do { \ 585 int _pcm_giant = 0; \ 586 PCM_UNLOCKASSERT(x); \ 587 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 588 do { \ 589 mtx_lock(&Giant); \ 590 _pcm_giant = 1; \ 591 } while (0) 592 593#define PCM_GIANT_EXIT(x) do { \ 594 PCM_UNLOCKASSERT(x); \ 595 KASSERT(_pcm_giant == 0 || _pcm_giant == 1, \ 596 ("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 597 __func__, __LINE__)); \ 598 KASSERT(!((x)->flags & SD_F_MPSAFE) || \ 599 (((x)->flags & SD_F_MPSAFE) && _pcm_giant == 0), \ 600 ("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 601 __func__, __LINE__)); \ 602 if (_pcm_giant != 0) { \ 603 mtx_assert(&Giant, MA_OWNED); \ 604 _pcm_giant = 0; \ 605 mtx_unlock(&Giant); \ 606 } \ 607} while (0) 608#endif /* !SND_DIAGNOSTIC */ 609 610#define PCM_GIANT_LEAVE(x) \ 611 PCM_GIANT_EXIT(x); \ 612} while (0) 613 614#ifdef KLD_MODULE 615#define PCM_KLDSTRING(a) ("kld " # a) 616#else 617#define PCM_KLDSTRING(a) "" 618#endif 619 620#endif /* _KERNEL */ 621 622#endif /* _OS_H_ */ 623