sound.h revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 5 * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> 6 * Copyright (c) 1995 Hannu Savolainen 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD: stable/11/sys/dev/sound/pcm/sound.h 330897 2018-03-14 03:19:51Z eadler $ 31 */ 32 33/* 34 * first, include kernel header files. 35 */ 36 37#ifndef _OS_H_ 38#define _OS_H_ 39 40#ifdef _KERNEL 41#include <sys/param.h> 42#include <sys/systm.h> 43#include <sys/ioccom.h> 44#include <sys/filio.h> 45#include <sys/sockio.h> 46#include <sys/fcntl.h> 47#include <sys/selinfo.h> 48#include <sys/proc.h> 49#include <sys/kernel.h> /* for DATA_SET */ 50#include <sys/module.h> 51#include <sys/conf.h> 52#include <sys/file.h> 53#include <sys/uio.h> 54#include <sys/syslog.h> 55#include <sys/errno.h> 56#include <sys/malloc.h> 57#include <sys/bus.h> 58#include <machine/resource.h> 59#include <machine/bus.h> 60#include <sys/rman.h> 61#include <sys/limits.h> 62#include <sys/mman.h> 63#include <sys/poll.h> 64#include <sys/sbuf.h> 65#include <sys/soundcard.h> 66#include <sys/sysctl.h> 67#include <sys/kobj.h> 68#include <vm/vm.h> 69#include <vm/pmap.h> 70 71#include <sys/lock.h> 72#include <sys/mutex.h> 73#include <sys/condvar.h> 74 75#ifndef KOBJMETHOD_END 76#define KOBJMETHOD_END { NULL, NULL } 77#endif 78 79struct pcm_channel; 80struct pcm_feeder; 81struct snd_dbuf; 82struct snd_mixer; 83 84#include <dev/sound/pcm/buffer.h> 85#include <dev/sound/pcm/matrix.h> 86#include <dev/sound/pcm/matrix_map.h> 87#include <dev/sound/pcm/channel.h> 88#include <dev/sound/pcm/feeder.h> 89#include <dev/sound/pcm/mixer.h> 90#include <dev/sound/pcm/dsp.h> 91#include <dev/sound/clone.h> 92#include <dev/sound/unit.h> 93 94#define PCM_SOFTC_SIZE (sizeof(struct snddev_info)) 95 96#define SND_STATUSLEN 64 97 98#define SOUND_MODVER 5 99 100#define SOUND_MINVER SOUND_MODVER 101#define SOUND_PREFVER SOUND_MODVER 102#define SOUND_MAXVER SOUND_MODVER 103 104/* 105 * We're abusing the fact that MAXMINOR still have enough room 106 * for our bit twiddling and nobody ever need 512 unique soundcards, 107 * 32 unique device types and 1024 unique cloneable devices for the 108 * next 100 years... 109 */ 110 111#define PCMMAXUNIT (snd_max_u()) 112#define PCMMAXDEV (snd_max_d()) 113#define PCMMAXCHAN (snd_max_c()) 114 115#define PCMMAXCLONE PCMMAXCHAN 116 117#define PCMUNIT(x) (snd_unit2u(dev2unit(x))) 118#define PCMDEV(x) (snd_unit2d(dev2unit(x))) 119#define PCMCHAN(x) (snd_unit2c(dev2unit(x))) 120 121/* XXX unit2minor compat */ 122#define PCMMINOR(x) (x) 123 124/* 125 * By design, limit possible channels for each direction. 126 */ 127#define SND_MAXHWCHAN 256 128#define SND_MAXVCHANS SND_MAXHWCHAN 129 130#define SD_F_SIMPLEX 0x00000001 131#define SD_F_AUTOVCHAN 0x00000002 132#define SD_F_SOFTPCMVOL 0x00000004 133/* 134 * Obsolete due to better matrixing 135 */ 136#if 0 137#define SD_F_PSWAPLR 0x00000008 138#define SD_F_RSWAPLR 0x00000010 139#endif 140#define SD_F_DYING 0x00000008 141#define SD_F_SUICIDE 0x00000010 142#define SD_F_BUSY 0x00000020 143#define SD_F_MPSAFE 0x00000040 144#define SD_F_REGISTERED 0x00000080 145#define SD_F_BITPERFECT 0x00000100 146#define SD_F_VPC 0x00000200 /* volume-per-channel */ 147#define SD_F_EQ 0x00000400 /* EQ */ 148#define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */ 149#define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */ 150#define SD_F_EQ_PC 0x00002000 /* EQ per-channel */ 151 152#define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED) 153#define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \ 154 SD_F_EQ_BYPASSED | SD_F_EQ_PC) 155 156#define SD_F_PRIO_RD 0x10000000 157#define SD_F_PRIO_WR 0x20000000 158#define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR) 159#define SD_F_DIR_SET 0x40000000 160#define SD_F_TRANSIENT 0xf0000000 161 162#define SD_F_BITS "\020" \ 163 "\001SIMPLEX" \ 164 "\002AUTOVCHAN" \ 165 "\003SOFTPCMVOL" \ 166 "\004DYING" \ 167 "\005SUICIDE" \ 168 "\006BUSY" \ 169 "\007MPSAFE" \ 170 "\010REGISTERED" \ 171 "\011BITPERFECT" \ 172 "\012VPC" \ 173 "\013EQ" \ 174 "\014EQ_ENABLED" \ 175 "\015EQ_BYPASSED" \ 176 "\016EQ_PC" \ 177 "\035PRIO_RD" \ 178 "\036PRIO_WR" \ 179 "\037DIR_SET" 180 181#define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \ 182 !((x)->flags & SD_F_DYING)) 183#define PCM_REGISTERED(x) (PCM_ALIVE(x) && \ 184 ((x)->flags & SD_F_REGISTERED)) 185 186/* many variables should be reduced to a range. Here define a macro */ 187#define RANGE(var, low, high) (var) = \ 188 (((var)<(low))? (low) : ((var)>(high))? (high) : (var)) 189#define DSP_BUFFSIZE (8192) 190 191/* make figuring out what a format is easier. got AFMT_STEREO already */ 192#define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE) 193#define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE) 194#define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE) 195#define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW) 196#define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8) 197#define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \ 198 AFMT_S16_LE | AFMT_S16_BE | AFMT_S8) 199#define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \ 200 AFMT_S16_BE | AFMT_U16_BE) 201 202#define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \ 203 AFMT_32BIT) 204 205/* Supported vchan mixing formats */ 206#define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711) 207 208#define AFMT_PASSTHROUGH AFMT_AC3 209#define AFMT_PASSTHROUGH_RATE 48000 210#define AFMT_PASSTHROUGH_CHANNEL 2 211#define AFMT_PASSTHROUGH_EXTCHANNEL 0 212 213/* 214 * We're simply using unused, contiguous bits from various AFMT_ definitions. 215 * ~(0xb00ff7ff) 216 */ 217#define AFMT_ENCODING_MASK 0xf00fffff 218#define AFMT_CHANNEL_MASK 0x07f00000 219#define AFMT_CHANNEL_SHIFT 20 220#define AFMT_CHANNEL_MAX 0x7f 221#define AFMT_EXTCHANNEL_MASK 0x08000000 222#define AFMT_EXTCHANNEL_SHIFT 27 223#define AFMT_EXTCHANNEL_MAX 1 224 225#define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK) 226 227#define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \ 228 AFMT_EXTCHANNEL_SHIFT) 229 230#define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \ 231 AFMT_CHANNEL_SHIFT) 232 233#define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \ 234 (((v) & AFMT_24BIT) ? 24 : \ 235 ((((v) & AFMT_16BIT) || \ 236 ((v) & AFMT_PASSTHROUGH)) ? 16 : 8))) 237 238#define AFMT_BPS(v) (AFMT_BIT(v) >> 3) 239#define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v)) 240 241#define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \ 242 (((c) << AFMT_CHANNEL_SHIFT) & \ 243 AFMT_CHANNEL_MASK) | \ 244 (((e) << AFMT_EXTCHANNEL_SHIFT) & \ 245 AFMT_EXTCHANNEL_MASK)) 246 247#define AFMT_U8_NE AFMT_U8 248#define AFMT_S8_NE AFMT_S8 249 250#define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE) 251 252#define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \ 253 AFMT_U24_NE | AFMT_U32_NE) 254 255/* 256 * Minor numbers for the sound driver. 257 * 258 * Unfortunately Creative called the codec chip of SB as a DSP. For this 259 * reason the /dev/dsp is reserved for digitized audio use. There is a 260 * device for true DSP processors but it will be called something else. 261 * In v3.0 it's /dev/sndproc but this could be a temporary solution. 262 */ 263 264#define SND_DEV_CTL 0 /* Control port /dev/mixer */ 265#define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */ 266#define SND_DEV_MIDIN 2 /* Raw midi access */ 267#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */ 268#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */ 269#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */ 270#define SND_DEV_STATUS 6 /* /dev/sndstat */ 271 /* #7 not in use now. */ 272#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */ 273#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */ 274#define SND_DEV_PSS SND_DEV_SNDPROC /* ? */ 275#define SND_DEV_NORESET 10 276 277#define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */ 278#define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */ 279#define SND_DEV_DSPHW_REC 13 /* specific record channel */ 280#define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */ 281 282#define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */ 283 284/* 285 * OSSv4 compatible device. For now, it serve no purpose and 286 * the cloning itself will forward the request to ordinary /dev/dsp 287 * instead. 288 */ 289#define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */ 290#define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */ 291#define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */ 292#define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */ 293#define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */ 294 295#define SND_DEV_LAST SND_DEV_DSP_SPDIFIN 296#define SND_DEV_MAX PCMMAXDEV 297 298#define DSP_DEFAULT_SPEED 8000 299 300#define ON 1 301#define OFF 0 302 303extern int pcm_veto_load; 304extern int snd_unit; 305extern int snd_maxautovchans; 306extern int snd_verbose; 307extern devclass_t pcm_devclass; 308extern struct unrhdr *pcmsg_unrhdr; 309 310/* 311 * some macros for debugging purposes 312 * DDB/DEB to enable/disable debugging stuff 313 * BVDDB to enable debugging when bootverbose 314 */ 315#define BVDDB(x) if (bootverbose) x 316 317#ifndef DEB 318#define DEB(x) 319#endif 320 321SYSCTL_DECL(_hw_snd); 322 323int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num); 324int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, 325 pid_t pid, char *comm, int devunit); 326int pcm_chnrelease(struct pcm_channel *c); 327int pcm_chnref(struct pcm_channel *c, int ref); 328int pcm_inprog(struct snddev_info *d, int delta); 329 330struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo); 331int pcm_chn_destroy(struct pcm_channel *ch); 332int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch); 333int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch); 334 335int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo); 336unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz); 337int pcm_register(device_t dev, void *devinfo, int numplay, int numrec); 338int pcm_unregister(device_t dev); 339int pcm_setstatus(device_t dev, char *str); 340u_int32_t pcm_getflags(device_t dev); 341void pcm_setflags(device_t dev, u_int32_t val); 342void *pcm_getdevinfo(device_t dev); 343 344 345int snd_setup_intr(device_t dev, struct resource *res, int flags, 346 driver_intr_t hand, void *param, void **cookiep); 347 348void *snd_mtxcreate(const char *desc, const char *type); 349void snd_mtxfree(void *m); 350void snd_mtxassert(void *m); 351#define snd_mtxlock(m) mtx_lock(m) 352#define snd_mtxunlock(m) mtx_unlock(m) 353 354typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose); 355int sndstat_register(device_t dev, char *str, sndstat_handler handler); 356int sndstat_registerfile(char *str); 357int sndstat_unregister(device_t dev); 358int sndstat_unregisterfile(char *str); 359 360#define SND_DECLARE_FILE(version) \ 361 _SND_DECLARE_FILE(__LINE__, version) 362 363#define _SND_DECLARE_FILE(uniq, version) \ 364 __SND_DECLARE_FILE(uniq, version) 365 366#define __SND_DECLARE_FILE(uniq, version) \ 367 static char sndstat_vinfo[] = version; \ 368 SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \ 369 SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo); 370 371/* usage of flags in device config entry (config file) */ 372#define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */ 373#define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */ 374 375/* ought to be made obsolete but still used by mss */ 376#define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */ 377#define DV_F_DEV_SHIFT 8 /* force device type/class */ 378 379/* 380 * this is rather kludgey- we need to duplicate these struct def'ns from sound.c 381 * so that the macro versions of pcm_{,un}lock can dereference them. 382 * we also have to do this now makedev() has gone away. 383 */ 384 385struct snddev_info { 386 struct { 387 struct { 388 SLIST_HEAD(, pcm_channel) head; 389 struct { 390 SLIST_HEAD(, pcm_channel) head; 391 } busy; 392 struct { 393 SLIST_HEAD(, pcm_channel) head; 394 } opened; 395 } pcm; 396 } channels; 397 TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool; 398 struct snd_clone *clones; 399 unsigned devcount, playcount, reccount, pvchancount, rvchancount ; 400 unsigned flags; 401 int inprog; 402 unsigned int bufsz; 403 void *devinfo; 404 device_t dev; 405 char status[SND_STATUSLEN]; 406 struct mtx *lock; 407 struct cdev *mixer_dev; 408 uint32_t pvchanrate, pvchanformat; 409 uint32_t rvchanrate, rvchanformat; 410 int32_t eqpreamp; 411 struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx; 412 struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree; 413 struct cv cv; 414}; 415 416void sound_oss_sysinfo(oss_sysinfo *); 417int sound_oss_card_info(oss_card_info *); 418 419#define PCM_LOCKOWNED(d) mtx_owned((d)->lock) 420#define PCM_LOCK(d) mtx_lock((d)->lock) 421#define PCM_UNLOCK(d) mtx_unlock((d)->lock) 422#define PCM_TRYLOCK(d) mtx_trylock((d)->lock) 423#define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED) 424#define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED) 425 426/* 427 * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these 428 * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you! 429 */ 430#ifdef SND_DIAGNOSTIC 431#define PCM_WAIT(x) do { \ 432 if (!PCM_LOCKOWNED(x)) \ 433 panic("%s(%d): [PCM WAIT] Mutex not owned!", \ 434 __func__, __LINE__); \ 435 while ((x)->flags & SD_F_BUSY) { \ 436 if (snd_verbose > 3) \ 437 device_printf((x)->dev, \ 438 "%s(%d): [PCM WAIT] calling cv_wait().\n", \ 439 __func__, __LINE__); \ 440 cv_wait(&(x)->cv, (x)->lock); \ 441 } \ 442} while (0) 443 444#define PCM_ACQUIRE(x) do { \ 445 if (!PCM_LOCKOWNED(x)) \ 446 panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \ 447 __func__, __LINE__); \ 448 if ((x)->flags & SD_F_BUSY) \ 449 panic("%s(%d): [PCM ACQUIRE] " \ 450 "Trying to acquire BUSY cv!", __func__, __LINE__); \ 451 (x)->flags |= SD_F_BUSY; \ 452} while (0) 453 454#define PCM_RELEASE(x) do { \ 455 if (!PCM_LOCKOWNED(x)) \ 456 panic("%s(%d): [PCM RELEASE] Mutex not owned!", \ 457 __func__, __LINE__); \ 458 if ((x)->flags & SD_F_BUSY) { \ 459 (x)->flags &= ~SD_F_BUSY; \ 460 if ((x)->cv.cv_waiters != 0) { \ 461 if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \ 462 device_printf((x)->dev, \ 463 "%s(%d): [PCM RELEASE] " \ 464 "cv_waiters=%d > 1!\n", \ 465 __func__, __LINE__, \ 466 (x)->cv.cv_waiters); \ 467 cv_broadcast(&(x)->cv); \ 468 } \ 469 } else \ 470 panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 471 __func__, __LINE__); \ 472} while (0) 473 474/* Quick version, for shorter path. */ 475#define PCM_ACQUIRE_QUICK(x) do { \ 476 if (PCM_LOCKOWNED(x)) \ 477 panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \ 478 __func__, __LINE__); \ 479 PCM_LOCK(x); \ 480 PCM_WAIT(x); \ 481 PCM_ACQUIRE(x); \ 482 PCM_UNLOCK(x); \ 483} while (0) 484 485#define PCM_RELEASE_QUICK(x) do { \ 486 if (PCM_LOCKOWNED(x)) \ 487 panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \ 488 __func__, __LINE__); \ 489 PCM_LOCK(x); \ 490 PCM_RELEASE(x); \ 491 PCM_UNLOCK(x); \ 492} while (0) 493 494#define PCM_BUSYASSERT(x) do { \ 495 if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \ 496 panic("%s(%d): [PCM BUSYASSERT] " \ 497 "Failed, snddev_info=%p", __func__, __LINE__, x); \ 498} while (0) 499 500#define PCM_GIANT_ENTER(x) do { \ 501 int _pcm_giant = 0; \ 502 if (PCM_LOCKOWNED(x)) \ 503 panic("%s(%d): [GIANT ENTER] PCM lock owned!", \ 504 __func__, __LINE__); \ 505 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 506 device_printf((x)->dev, \ 507 "%s(%d): [GIANT ENTER] Giant owned!\n", \ 508 __func__, __LINE__); \ 509 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 510 do { \ 511 mtx_lock(&Giant); \ 512 _pcm_giant = 1; \ 513 } while (0) 514 515#define PCM_GIANT_EXIT(x) do { \ 516 if (PCM_LOCKOWNED(x)) \ 517 panic("%s(%d): [GIANT EXIT] PCM lock owned!", \ 518 __func__, __LINE__); \ 519 if (!(_pcm_giant == 0 || _pcm_giant == 1)) \ 520 panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 521 __func__, __LINE__); \ 522 if ((x)->flags & SD_F_MPSAFE) { \ 523 if (_pcm_giant == 1) \ 524 panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 525 __func__, __LINE__); \ 526 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 527 device_printf((x)->dev, \ 528 "%s(%d): [GIANT EXIT] Giant owned!\n", \ 529 __func__, __LINE__); \ 530 } \ 531 if (_pcm_giant != 0) { \ 532 if (mtx_owned(&Giant) == 0) \ 533 panic("%s(%d): [GIANT EXIT] Giant not owned!", \ 534 __func__, __LINE__); \ 535 _pcm_giant = 0; \ 536 mtx_unlock(&Giant); \ 537 } \ 538} while (0) 539#else /* SND_DIAGNOSTIC */ 540#define PCM_WAIT(x) do { \ 541 PCM_LOCKASSERT(x); \ 542 while ((x)->flags & SD_F_BUSY) \ 543 cv_wait(&(x)->cv, (x)->lock); \ 544} while (0) 545 546#define PCM_ACQUIRE(x) do { \ 547 PCM_LOCKASSERT(x); \ 548 KASSERT(!((x)->flags & SD_F_BUSY), \ 549 ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \ 550 __func__, __LINE__)); \ 551 (x)->flags |= SD_F_BUSY; \ 552} while (0) 553 554#define PCM_RELEASE(x) do { \ 555 PCM_LOCKASSERT(x); \ 556 KASSERT((x)->flags & SD_F_BUSY, \ 557 ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 558 __func__, __LINE__)); \ 559 (x)->flags &= ~SD_F_BUSY; \ 560 if ((x)->cv.cv_waiters != 0) \ 561 cv_broadcast(&(x)->cv); \ 562} while (0) 563 564/* Quick version, for shorter path. */ 565#define PCM_ACQUIRE_QUICK(x) do { \ 566 PCM_UNLOCKASSERT(x); \ 567 PCM_LOCK(x); \ 568 PCM_WAIT(x); \ 569 PCM_ACQUIRE(x); \ 570 PCM_UNLOCK(x); \ 571} while (0) 572 573#define PCM_RELEASE_QUICK(x) do { \ 574 PCM_UNLOCKASSERT(x); \ 575 PCM_LOCK(x); \ 576 PCM_RELEASE(x); \ 577 PCM_UNLOCK(x); \ 578} while (0) 579 580#define PCM_BUSYASSERT(x) KASSERT(x != NULL && \ 581 ((x)->flags & SD_F_BUSY), \ 582 ("%s(%d): [PCM BUSYASSERT] " \ 583 "Failed, snddev_info=%p", \ 584 __func__, __LINE__, x)) 585 586#define PCM_GIANT_ENTER(x) do { \ 587 int _pcm_giant = 0; \ 588 PCM_UNLOCKASSERT(x); \ 589 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 590 do { \ 591 mtx_lock(&Giant); \ 592 _pcm_giant = 1; \ 593 } while (0) 594 595#define PCM_GIANT_EXIT(x) do { \ 596 PCM_UNLOCKASSERT(x); \ 597 KASSERT(_pcm_giant == 0 || _pcm_giant == 1, \ 598 ("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 599 __func__, __LINE__)); \ 600 KASSERT(!((x)->flags & SD_F_MPSAFE) || \ 601 (((x)->flags & SD_F_MPSAFE) && _pcm_giant == 0), \ 602 ("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 603 __func__, __LINE__)); \ 604 if (_pcm_giant != 0) { \ 605 mtx_assert(&Giant, MA_OWNED); \ 606 _pcm_giant = 0; \ 607 mtx_unlock(&Giant); \ 608 } \ 609} while (0) 610#endif /* !SND_DIAGNOSTIC */ 611 612#define PCM_GIANT_LEAVE(x) \ 613 PCM_GIANT_EXIT(x); \ 614} while (0) 615 616#ifdef KLD_MODULE 617#define PCM_KLDSTRING(a) ("kld " # a) 618#else 619#define PCM_KLDSTRING(a) "" 620#endif 621 622#endif /* _KERNEL */ 623 624#endif /* _OS_H_ */ 625