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 * $FreeBSD$ 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#if __FreeBSD_version < 500000 57#include <sys/buf.h> 58#endif 59#include <machine/resource.h> 60#include <machine/bus.h> 61#include <sys/rman.h> 62#include <sys/limits.h> 63#include <sys/mman.h> 64#include <sys/poll.h> 65#include <sys/sbuf.h> 66#include <sys/soundcard.h> 67#include <sys/sysctl.h> 68#include <sys/kobj.h> 69#include <vm/vm.h> 70#include <vm/pmap.h> 71 72#include <sys/lock.h> 73#include <sys/mutex.h> 74#include <sys/condvar.h> 75 76#ifndef KOBJMETHOD_END 77#define KOBJMETHOD_END { NULL, NULL } 78#endif 79 80struct pcm_channel; 81struct pcm_feeder; 82struct snd_dbuf; 83struct snd_mixer; 84 85#include <dev/sound/pcm/buffer.h> 86#include <dev/sound/pcm/matrix.h> 87#include <dev/sound/pcm/matrix_map.h> 88#include <dev/sound/pcm/channel.h> 89#include <dev/sound/pcm/feeder.h> 90#include <dev/sound/pcm/mixer.h> 91#include <dev/sound/pcm/dsp.h> 92#include <dev/sound/clone.h> 93#include <dev/sound/unit.h> 94 95#define PCM_SOFTC_SIZE (sizeof(struct snddev_info)) 96 97#define SND_STATUSLEN 64 98 99#define SOUND_MODVER 5 100 101#define SOUND_MINVER SOUND_MODVER 102#define SOUND_PREFVER SOUND_MODVER 103#define SOUND_MAXVER SOUND_MODVER 104 105/* 106 * We're abusing the fact that MAXMINOR still have enough room 107 * for our bit twiddling and nobody ever need 512 unique soundcards, 108 * 32 unique device types and 1024 unique cloneable devices for the 109 * next 100 years... 110 */ 111 112#define PCMMAXUNIT (snd_max_u()) 113#define PCMMAXDEV (snd_max_d()) 114#define PCMMAXCHAN (snd_max_c()) 115 116#define PCMMAXCLONE PCMMAXCHAN 117 118#define PCMUNIT(x) (snd_unit2u(dev2unit(x))) 119#define PCMDEV(x) (snd_unit2d(dev2unit(x))) 120#define PCMCHAN(x) (snd_unit2c(dev2unit(x))) 121 122/* XXX unit2minor compat */ 123#if __FreeBSD_version >= 800062 124#define PCMMINOR(x) (x) 125#else 126#define PCMMINOR(x) unit2minor(x) 127#endif 128 129/* 130 * By design, limit possible channels for each direction. 131 */ 132#define SND_MAXHWCHAN 256 133#define SND_MAXVCHANS SND_MAXHWCHAN 134 135#define SD_F_SIMPLEX 0x00000001 136#define SD_F_AUTOVCHAN 0x00000002 137#define SD_F_SOFTPCMVOL 0x00000004 138/* 139 * Obsolete due to better matrixing 140 */ 141#if 0 142#define SD_F_PSWAPLR 0x00000008 143#define SD_F_RSWAPLR 0x00000010 144#endif 145#define SD_F_DYING 0x00000008 146#define SD_F_SUICIDE 0x00000010 147#define SD_F_BUSY 0x00000020 148#define SD_F_MPSAFE 0x00000040 149#define SD_F_REGISTERED 0x00000080 150#define SD_F_BITPERFECT 0x00000100 151#define SD_F_VPC 0x00000200 /* volume-per-channel */ 152#define SD_F_EQ 0x00000400 /* EQ */ 153#define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */ 154#define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */ 155#define SD_F_EQ_PC 0x00002000 /* EQ per-channel */ 156 157#define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED) 158#define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \ 159 SD_F_EQ_BYPASSED | SD_F_EQ_PC) 160 161#define SD_F_PRIO_RD 0x10000000 162#define SD_F_PRIO_WR 0x20000000 163#define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR) 164#define SD_F_DIR_SET 0x40000000 165#define SD_F_TRANSIENT 0xf0000000 166 167#define SD_F_BITS "\020" \ 168 "\001SIMPLEX" \ 169 "\002AUTOVCHAN" \ 170 "\003SOFTPCMVOL" \ 171 "\004DYING" \ 172 "\005SUICIDE" \ 173 "\006BUSY" \ 174 "\007MPSAFE" \ 175 "\010REGISTERED" \ 176 "\011BITPERFECT" \ 177 "\012VPC" \ 178 "\013EQ" \ 179 "\014EQ_ENABLED" \ 180 "\015EQ_BYPASSED" \ 181 "\016EQ_PC" \ 182 "\035PRIO_RD" \ 183 "\036PRIO_WR" \ 184 "\037DIR_SET" 185 186#define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \ 187 !((x)->flags & SD_F_DYING)) 188#define PCM_REGISTERED(x) (PCM_ALIVE(x) && \ 189 ((x)->flags & SD_F_REGISTERED)) 190 191/* many variables should be reduced to a range. Here define a macro */ 192#define RANGE(var, low, high) (var) = \ 193 (((var)<(low))? (low) : ((var)>(high))? (high) : (var)) 194#define DSP_BUFFSIZE (8192) 195 196/* make figuring out what a format is easier. got AFMT_STEREO already */ 197#define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE) 198#define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE) 199#define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE) 200#define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW) 201#define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8) 202#define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \ 203 AFMT_S16_LE | AFMT_S16_BE | AFMT_S8) 204#define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \ 205 AFMT_S16_BE | AFMT_U16_BE) 206 207#define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \ 208 AFMT_32BIT) 209 210/* Supported vchan mixing formats */ 211#define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711) 212 213#define AFMT_PASSTHROUGH AFMT_AC3 214#define AFMT_PASSTHROUGH_RATE 48000 215#define AFMT_PASSTHROUGH_CHANNEL 2 216#define AFMT_PASSTHROUGH_EXTCHANNEL 0 217 218/* 219 * We're simply using unused, contiguous bits from various AFMT_ definitions. 220 * ~(0xb00ff7ff) 221 */ 222#define AFMT_ENCODING_MASK 0xf00fffff 223#define AFMT_CHANNEL_MASK 0x01f00000 224#define AFMT_CHANNEL_SHIFT 20 225#define AFMT_EXTCHANNEL_MASK 0x0e000000 226#define AFMT_EXTCHANNEL_SHIFT 25 227 228#define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK) 229 230#define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \ 231 AFMT_EXTCHANNEL_SHIFT) 232 233#define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \ 234 AFMT_CHANNEL_SHIFT) 235 236#define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \ 237 (((v) & AFMT_24BIT) ? 24 : \ 238 ((((v) & AFMT_16BIT) || \ 239 ((v) & AFMT_PASSTHROUGH)) ? 16 : 8))) 240 241#define AFMT_BPS(v) (AFMT_BIT(v) >> 3) 242#define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v)) 243 244#define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \ 245 (((c) << AFMT_CHANNEL_SHIFT) & \ 246 AFMT_CHANNEL_MASK) | \ 247 (((e) << AFMT_EXTCHANNEL_SHIFT) & \ 248 AFMT_EXTCHANNEL_MASK)) 249 250#define AFMT_U8_NE AFMT_U8 251#define AFMT_S8_NE AFMT_S8 252 253#define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE) 254 255#define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \ 256 AFMT_U24_NE | AFMT_U32_NE) 257 258/* 259 * Minor numbers for the sound driver. 260 * 261 * Unfortunately Creative called the codec chip of SB as a DSP. For this 262 * reason the /dev/dsp is reserved for digitized audio use. There is a 263 * device for true DSP processors but it will be called something else. 264 * In v3.0 it's /dev/sndproc but this could be a temporary solution. 265 */ 266 267#define SND_DEV_CTL 0 /* Control port /dev/mixer */ 268#define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */ 269#define SND_DEV_MIDIN 2 /* Raw midi access */ 270#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */ 271#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */ 272#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */ 273#define SND_DEV_STATUS 6 /* /dev/sndstat */ 274 /* #7 not in use now. */ 275#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */ 276#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */ 277#define SND_DEV_PSS SND_DEV_SNDPROC /* ? */ 278#define SND_DEV_NORESET 10 279 280#define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */ 281#define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */ 282#define SND_DEV_DSPHW_REC 13 /* specific record channel */ 283#define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */ 284 285#define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */ 286 287/* 288 * OSSv4 compatible device. For now, it serve no purpose and 289 * the cloning itself will forward the request to ordinary /dev/dsp 290 * instead. 291 */ 292#define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */ 293#define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */ 294#define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */ 295#define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */ 296#define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */ 297 298#define SND_DEV_LAST SND_DEV_DSP_SPDIFIN 299#define SND_DEV_MAX PCMMAXDEV 300 301#define DSP_DEFAULT_SPEED 8000 302 303#define ON 1 304#define OFF 0 305 306extern int pcm_veto_load; 307extern int snd_unit; 308extern int snd_maxautovchans; 309extern int snd_verbose; 310extern devclass_t pcm_devclass; 311extern struct unrhdr *pcmsg_unrhdr; 312 313/* 314 * some macros for debugging purposes 315 * DDB/DEB to enable/disable debugging stuff 316 * BVDDB to enable debugging when bootverbose 317 */ 318#define BVDDB(x) if (bootverbose) x 319 320#ifndef DEB 321#define DEB(x) 322#endif 323 324SYSCTL_DECL(_hw_snd); 325 326int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num); 327int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, 328 pid_t pid, char *comm, int devunit); 329int pcm_chnrelease(struct pcm_channel *c); 330int pcm_chnref(struct pcm_channel *c, int ref); 331int pcm_inprog(struct snddev_info *d, int delta); 332 333struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo); 334int pcm_chn_destroy(struct pcm_channel *ch); 335int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch); 336int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch); 337 338int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo); 339unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz); 340int pcm_register(device_t dev, void *devinfo, int numplay, int numrec); 341int pcm_unregister(device_t dev); 342int pcm_setstatus(device_t dev, char *str); 343u_int32_t pcm_getflags(device_t dev); 344void pcm_setflags(device_t dev, u_int32_t val); 345void *pcm_getdevinfo(device_t dev); 346 347 348int snd_setup_intr(device_t dev, struct resource *res, int flags, 349 driver_intr_t hand, void *param, void **cookiep); 350 351void *snd_mtxcreate(const char *desc, const char *type); 352void snd_mtxfree(void *m); 353void snd_mtxassert(void *m); 354#define snd_mtxlock(m) mtx_lock(m) 355#define snd_mtxunlock(m) mtx_unlock(m) 356 357typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose); 358int sndstat_acquire(struct thread *td); 359int sndstat_release(struct thread *td); 360int sndstat_register(device_t dev, char *str, sndstat_handler handler); 361int sndstat_registerfile(char *str); 362int sndstat_unregister(device_t dev); 363int sndstat_unregisterfile(char *str); 364 365#define SND_DECLARE_FILE(version) \ 366 _SND_DECLARE_FILE(__LINE__, version) 367 368#define _SND_DECLARE_FILE(uniq, version) \ 369 __SND_DECLARE_FILE(uniq, version) 370 371#define __SND_DECLARE_FILE(uniq, version) \ 372 static char sndstat_vinfo[] = version; \ 373 SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \ 374 SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo); 375 376/* usage of flags in device config entry (config file) */ 377#define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */ 378#define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */ 379 380/* ought to be made obsolete but still used by mss */ 381#define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */ 382#define DV_F_DEV_SHIFT 8 /* force device type/class */ 383 384/* 385 * this is rather kludgey- we need to duplicate these struct def'ns from sound.c 386 * so that the macro versions of pcm_{,un}lock can dereference them. 387 * we also have to do this now makedev() has gone away. 388 */ 389 390struct snddev_info { 391 struct { 392 struct { 393 SLIST_HEAD(, pcm_channel) head; 394 struct { 395 SLIST_HEAD(, pcm_channel) head; 396 } busy; 397 struct { 398 SLIST_HEAD(, pcm_channel) head; 399 } opened; 400 } pcm; 401 } channels; 402 TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool; 403 struct snd_clone *clones; 404 unsigned devcount, playcount, reccount, pvchancount, rvchancount ; 405 unsigned flags; 406 int inprog; 407 unsigned int bufsz; 408 void *devinfo; 409 device_t dev; 410 char status[SND_STATUSLEN]; 411 struct mtx *lock; 412 struct cdev *mixer_dev; 413 uint32_t pvchanrate, pvchanformat; 414 uint32_t rvchanrate, rvchanformat; 415 int32_t eqpreamp; 416 struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx; 417 struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree; 418 struct cv cv; 419}; 420 421void sound_oss_sysinfo(oss_sysinfo *); 422int sound_oss_card_info(oss_card_info *); 423 424#define PCM_LOCKOWNED(d) mtx_owned((d)->lock) 425#define PCM_LOCK(d) mtx_lock((d)->lock) 426#define PCM_UNLOCK(d) mtx_unlock((d)->lock) 427#define PCM_TRYLOCK(d) mtx_trylock((d)->lock) 428#define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED) 429#define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED) 430 431/* 432 * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these 433 * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you! 434 */ 435#ifdef SND_DIAGNOSTIC 436#define PCM_WAIT(x) do { \ 437 if (!PCM_LOCKOWNED(x)) \ 438 panic("%s(%d): [PCM WAIT] Mutex not owned!", \ 439 __func__, __LINE__); \ 440 while ((x)->flags & SD_F_BUSY) { \ 441 if (snd_verbose > 3) \ 442 device_printf((x)->dev, \ 443 "%s(%d): [PCM WAIT] calling cv_wait().\n", \ 444 __func__, __LINE__); \ 445 cv_wait(&(x)->cv, (x)->lock); \ 446 } \ 447} while (0) 448 449#define PCM_ACQUIRE(x) do { \ 450 if (!PCM_LOCKOWNED(x)) \ 451 panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \ 452 __func__, __LINE__); \ 453 if ((x)->flags & SD_F_BUSY) \ 454 panic("%s(%d): [PCM ACQUIRE] " \ 455 "Trying to acquire BUSY cv!", __func__, __LINE__); \ 456 (x)->flags |= SD_F_BUSY; \ 457} while (0) 458 459#define PCM_RELEASE(x) do { \ 460 if (!PCM_LOCKOWNED(x)) \ 461 panic("%s(%d): [PCM RELEASE] Mutex not owned!", \ 462 __func__, __LINE__); \ 463 if ((x)->flags & SD_F_BUSY) { \ 464 (x)->flags &= ~SD_F_BUSY; \ 465 if ((x)->cv.cv_waiters != 0) { \ 466 if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \ 467 device_printf((x)->dev, \ 468 "%s(%d): [PCM RELEASE] " \ 469 "cv_waiters=%d > 1!\n", \ 470 __func__, __LINE__, \ 471 (x)->cv.cv_waiters); \ 472 cv_broadcast(&(x)->cv); \ 473 } \ 474 } else \ 475 panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 476 __func__, __LINE__); \ 477} while (0) 478 479/* Quick version, for shorter path. */ 480#define PCM_ACQUIRE_QUICK(x) do { \ 481 if (PCM_LOCKOWNED(x)) \ 482 panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \ 483 __func__, __LINE__); \ 484 PCM_LOCK(x); \ 485 PCM_WAIT(x); \ 486 PCM_ACQUIRE(x); \ 487 PCM_UNLOCK(x); \ 488} while (0) 489 490#define PCM_RELEASE_QUICK(x) do { \ 491 if (PCM_LOCKOWNED(x)) \ 492 panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \ 493 __func__, __LINE__); \ 494 PCM_LOCK(x); \ 495 PCM_RELEASE(x); \ 496 PCM_UNLOCK(x); \ 497} while (0) 498 499#define PCM_BUSYASSERT(x) do { \ 500 if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \ 501 panic("%s(%d): [PCM BUSYASSERT] " \ 502 "Failed, snddev_info=%p", __func__, __LINE__, x); \ 503} while (0) 504 505#define PCM_GIANT_ENTER(x) do { \ 506 int _pcm_giant = 0; \ 507 if (PCM_LOCKOWNED(x)) \ 508 panic("%s(%d): [GIANT ENTER] PCM lock owned!", \ 509 __func__, __LINE__); \ 510 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 511 device_printf((x)->dev, \ 512 "%s(%d): [GIANT ENTER] Giant owned!\n", \ 513 __func__, __LINE__); \ 514 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 515 do { \ 516 mtx_lock(&Giant); \ 517 _pcm_giant = 1; \ 518 } while (0) 519 520#define PCM_GIANT_EXIT(x) do { \ 521 if (PCM_LOCKOWNED(x)) \ 522 panic("%s(%d): [GIANT EXIT] PCM lock owned!", \ 523 __func__, __LINE__); \ 524 if (!(_pcm_giant == 0 || _pcm_giant == 1)) \ 525 panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 526 __func__, __LINE__); \ 527 if ((x)->flags & SD_F_MPSAFE) { \ 528 if (_pcm_giant == 1) \ 529 panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 530 __func__, __LINE__); \ 531 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 532 device_printf((x)->dev, \ 533 "%s(%d): [GIANT EXIT] Giant owned!\n", \ 534 __func__, __LINE__); \ 535 } \ 536 if (_pcm_giant != 0) { \ 537 if (mtx_owned(&Giant) == 0) \ 538 panic("%s(%d): [GIANT EXIT] Giant not owned!", \ 539 __func__, __LINE__); \ 540 _pcm_giant = 0; \ 541 mtx_unlock(&Giant); \ 542 } \ 543} while (0) 544#else /* SND_DIAGNOSTIC */ 545#define PCM_WAIT(x) do { \ 546 PCM_LOCKASSERT(x); \ 547 while ((x)->flags & SD_F_BUSY) \ 548 cv_wait(&(x)->cv, (x)->lock); \ 549} while (0) 550 551#define PCM_ACQUIRE(x) do { \ 552 PCM_LOCKASSERT(x); \ 553 KASSERT(!((x)->flags & SD_F_BUSY), \ 554 ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \ 555 __func__, __LINE__)); \ 556 (x)->flags |= SD_F_BUSY; \ 557} while (0) 558 559#define PCM_RELEASE(x) do { \ 560 PCM_LOCKASSERT(x); \ 561 KASSERT((x)->flags & SD_F_BUSY, \ 562 ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 563 __func__, __LINE__)); \ 564 (x)->flags &= ~SD_F_BUSY; \ 565 if ((x)->cv.cv_waiters != 0) \ 566 cv_broadcast(&(x)->cv); \ 567} while (0) 568 569/* Quick version, for shorter path. */ 570#define PCM_ACQUIRE_QUICK(x) do { \ 571 PCM_UNLOCKASSERT(x); \ 572 PCM_LOCK(x); \ 573 PCM_WAIT(x); \ 574 PCM_ACQUIRE(x); \ 575 PCM_UNLOCK(x); \ 576} while (0) 577 578#define PCM_RELEASE_QUICK(x) do { \ 579 PCM_UNLOCKASSERT(x); \ 580 PCM_LOCK(x); \ 581 PCM_RELEASE(x); \ 582 PCM_UNLOCK(x); \ 583} while (0) 584 585#define PCM_BUSYASSERT(x) KASSERT(x != NULL && \ 586 ((x)->flags & SD_F_BUSY), \ 587 ("%s(%d): [PCM BUSYASSERT] " \ 588 "Failed, snddev_info=%p", \ 589 __func__, __LINE__, x)) 590 591#define PCM_GIANT_ENTER(x) do { \ 592 int _pcm_giant = 0; \ 593 PCM_UNLOCKASSERT(x); \ 594 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 595 do { \ 596 mtx_lock(&Giant); \ 597 _pcm_giant = 1; \ 598 } while (0) 599 600#define PCM_GIANT_EXIT(x) do { \ 601 PCM_UNLOCKASSERT(x); \ 602 KASSERT(_pcm_giant == 0 || _pcm_giant == 1, \ 603 ("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 604 __func__, __LINE__)); \ 605 KASSERT(!((x)->flags & SD_F_MPSAFE) || \ 606 (((x)->flags & SD_F_MPSAFE) && _pcm_giant == 0), \ 607 ("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 608 __func__, __LINE__)); \ 609 if (_pcm_giant != 0) { \ 610 mtx_assert(&Giant, MA_OWNED); \ 611 _pcm_giant = 0; \ 612 mtx_unlock(&Giant); \ 613 } \ 614} while (0) 615#endif /* !SND_DIAGNOSTIC */ 616 617#define PCM_GIANT_LEAVE(x) \ 618 PCM_GIANT_EXIT(x); \ 619} while (0) 620 621#ifdef KLD_MODULE 622#define PCM_KLDSTRING(a) ("kld " # a) 623#else 624#define PCM_KLDSTRING(a) "" 625#endif 626 627#endif /* _KERNEL */ 628 629#endif /* _OS_H_ */ 630