1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 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/eventhandler.h> 42 #include <sys/ioccom.h> 43 #include <sys/filio.h> 44 #include <sys/sockio.h> 45 #include <sys/fcntl.h> 46 #include <sys/selinfo.h> 47 #include <sys/proc.h> 48 #include <sys/kernel.h> /* for DATA_SET */ 49 #include <sys/module.h> 50 #include <sys/conf.h> 51 #include <sys/file.h> 52 #include <sys/uio.h> 53 #include <sys/syslog.h> 54 #include <sys/errno.h> 55 #include <sys/malloc.h> 56 #include <sys/bus.h> 57 #include <machine/resource.h> 58 #include <machine/bus.h> 59 #include <sys/rman.h> 60 #include <sys/limits.h> 61 #include <sys/mman.h> 62 #include <sys/poll.h> 63 #include <sys/sbuf.h> 64 #include <sys/soundcard.h> 65 #include <sys/sndstat.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 79 struct pcm_channel; 80 struct pcm_feeder; 81 struct snd_dbuf; 82 struct 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/unit.h> 92 93 #define PCM_SOFTC_SIZE (sizeof(struct snddev_info)) 94 95 #define SND_STATUSLEN 64 96 97 #define SOUND_MODVER 5 98 99 #define SOUND_MINVER SOUND_MODVER 100 #define SOUND_PREFVER SOUND_MODVER 101 #define SOUND_MAXVER SOUND_MODVER 102 103 /* 104 * We're abusing the fact that MAXMINOR still have enough room 105 * for our bit twiddling and nobody ever need 512 unique soundcards, 106 * 32 unique device types and 1024 unique cloneable devices for the 107 * next 100 years... 108 */ 109 110 #define PCMMAXUNIT (snd_max_u()) 111 #define PCMMAXDEV (snd_max_d()) 112 #define PCMMAXCHAN (snd_max_c()) 113 114 #define PCMUNIT(x) (snd_unit2u(dev2unit(x))) 115 #define PCMDEV(x) (snd_unit2d(dev2unit(x))) 116 #define PCMCHAN(x) (snd_unit2c(dev2unit(x))) 117 118 /* XXX unit2minor compat */ 119 #define PCMMINOR(x) (x) 120 121 /* 122 * By design, limit possible channels for each direction. 123 */ 124 #define SND_MAXHWCHAN 256 125 #define SND_MAXVCHANS SND_MAXHWCHAN 126 127 #define SD_F_SIMPLEX 0x00000001 128 #define SD_F_AUTOVCHAN 0x00000002 129 #define SD_F_SOFTPCMVOL 0x00000004 130 #define SD_F_DYING 0x00000008 131 #define SD_F_DETACHING 0x00000010 132 #define SD_F_BUSY 0x00000020 133 #define SD_F_MPSAFE 0x00000040 134 #define SD_F_REGISTERED 0x00000080 135 #define SD_F_BITPERFECT 0x00000100 136 #define SD_F_VPC 0x00000200 /* volume-per-channel */ 137 #define SD_F_EQ 0x00000400 /* EQ */ 138 #define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */ 139 #define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */ 140 #define SD_F_EQ_PC 0x00002000 /* EQ per-channel */ 141 142 #define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED) 143 #define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \ 144 SD_F_EQ_BYPASSED | SD_F_EQ_PC) 145 146 #define SD_F_PRIO_RD 0x10000000 147 #define SD_F_PRIO_WR 0x20000000 148 #define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR) 149 #define SD_F_DIR_SET 0x40000000 150 #define SD_F_TRANSIENT 0xf0000000 151 152 #define SD_F_BITS "\020" \ 153 "\001SIMPLEX" \ 154 "\002AUTOVCHAN" \ 155 "\003SOFTPCMVOL" \ 156 "\004DYING" \ 157 "\005DETACHING" \ 158 "\006BUSY" \ 159 "\007MPSAFE" \ 160 "\010REGISTERED" \ 161 "\011BITPERFECT" \ 162 "\012VPC" \ 163 "\013EQ" \ 164 "\014EQ_ENABLED" \ 165 "\015EQ_BYPASSED" \ 166 "\016EQ_PC" \ 167 "\035PRIO_RD" \ 168 "\036PRIO_WR" \ 169 "\037DIR_SET" 170 171 #define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \ 172 !((x)->flags & SD_F_DYING)) 173 #define PCM_REGISTERED(x) (PCM_ALIVE(x) && \ 174 ((x)->flags & SD_F_REGISTERED)) 175 176 #define PCM_DETACHING(x) ((x)->flags & SD_F_DETACHING) 177 178 /* many variables should be reduced to a range. Here define a macro */ 179 #define RANGE(var, low, high) (var) = \ 180 (((var)<(low))? (low) : ((var)>(high))? (high) : (var)) 181 #define DSP_BUFFSIZE (8192) 182 183 /* make figuring out what a format is easier. got AFMT_STEREO already */ 184 #define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE) 185 #define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE) 186 #define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE) 187 #define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW) 188 #define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8) 189 #define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \ 190 AFMT_S16_LE | AFMT_S16_BE | AFMT_S8) 191 #define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \ 192 AFMT_S16_BE | AFMT_U16_BE) 193 194 #define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \ 195 AFMT_32BIT) 196 197 /* Supported vchan mixing formats */ 198 #define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711) 199 200 #define AFMT_PASSTHROUGH AFMT_AC3 201 #define AFMT_PASSTHROUGH_RATE 48000 202 #define AFMT_PASSTHROUGH_CHANNEL 2 203 #define AFMT_PASSTHROUGH_EXTCHANNEL 0 204 205 /* 206 * We're simply using unused, contiguous bits from various AFMT_ definitions. 207 * ~(0xb00ff7ff) 208 */ 209 #define AFMT_ENCODING_MASK 0xf00fffff 210 #define AFMT_CHANNEL_MASK 0x07f00000 211 #define AFMT_CHANNEL_SHIFT 20 212 #define AFMT_CHANNEL_MAX 0x7f 213 #define AFMT_EXTCHANNEL_MASK 0x08000000 214 #define AFMT_EXTCHANNEL_SHIFT 27 215 #define AFMT_EXTCHANNEL_MAX 1 216 217 #define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK) 218 219 #define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \ 220 AFMT_EXTCHANNEL_SHIFT) 221 222 #define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \ 223 AFMT_CHANNEL_SHIFT) 224 225 #define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \ 226 (((v) & AFMT_24BIT) ? 24 : \ 227 ((((v) & AFMT_16BIT) || \ 228 ((v) & AFMT_PASSTHROUGH)) ? 16 : 8))) 229 230 #define AFMT_BPS(v) (AFMT_BIT(v) >> 3) 231 #define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v)) 232 233 #define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \ 234 (((c) << AFMT_CHANNEL_SHIFT) & \ 235 AFMT_CHANNEL_MASK) | \ 236 (((e) << AFMT_EXTCHANNEL_SHIFT) & \ 237 AFMT_EXTCHANNEL_MASK)) 238 239 #define AFMT_U8_NE AFMT_U8 240 #define AFMT_S8_NE AFMT_S8 241 242 #define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE) 243 244 #define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \ 245 AFMT_U24_NE | AFMT_U32_NE) 246 247 /* 248 * Minor numbers for the sound driver. 249 * 250 * Unfortunately Creative called the codec chip of SB as a DSP. For this 251 * reason the /dev/dsp is reserved for digitized audio use. There is a 252 * device for true DSP processors but it will be called something else. 253 * In v3.0 it's /dev/sndproc but this could be a temporary solution. 254 */ 255 256 #define SND_DEV_CTL 0 /* Control port /dev/mixer */ 257 #define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */ 258 #define SND_DEV_MIDIN 2 /* Raw midi access */ 259 #define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */ 260 #define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */ 261 #define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */ 262 #define SND_DEV_STATUS 6 /* /dev/sndstat */ 263 /* #7 not in use now. */ 264 #define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */ 265 #define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */ 266 #define SND_DEV_PSS SND_DEV_SNDPROC /* ? */ 267 #define SND_DEV_NORESET 10 268 269 #define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */ 270 #define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */ 271 #define SND_DEV_DSPHW_REC 13 /* specific record channel */ 272 #define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */ 273 274 #define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */ 275 276 /* 277 * OSSv4 compatible device. For now, it serve no purpose and 278 * the cloning itself will forward the request to ordinary /dev/dsp 279 * instead. 280 */ 281 #define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */ 282 #define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */ 283 #define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */ 284 #define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */ 285 #define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */ 286 287 #define DSP_DEFAULT_SPEED 8000 288 289 #define ON 1 290 #define OFF 0 291 292 extern int pcm_veto_load; 293 extern int snd_unit; 294 extern int snd_maxautovchans; 295 extern int snd_verbose; 296 extern devclass_t pcm_devclass; 297 extern struct unrhdr *pcmsg_unrhdr; 298 299 /* 300 * some macros for debugging purposes 301 * DDB/DEB to enable/disable debugging stuff 302 * BVDDB to enable debugging when bootverbose 303 */ 304 #define BVDDB(x) if (bootverbose) x 305 306 #ifndef DEB 307 #define DEB(x) 308 #endif 309 310 SYSCTL_DECL(_hw_snd); 311 312 int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num); 313 int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, 314 pid_t pid, char *comm, int devunit); 315 int pcm_chnrelease(struct pcm_channel *c); 316 int pcm_chnref(struct pcm_channel *c, int ref); 317 318 struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo); 319 int pcm_chn_destroy(struct pcm_channel *ch); 320 int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch); 321 int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch); 322 323 int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo); 324 unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz); 325 int pcm_register(device_t dev, void *devinfo, int numplay, int numrec); 326 int pcm_unregister(device_t dev); 327 int pcm_setstatus(device_t dev, char *str); 328 u_int32_t pcm_getflags(device_t dev); 329 void pcm_setflags(device_t dev, u_int32_t val); 330 void *pcm_getdevinfo(device_t dev); 331 332 int snd_setup_intr(device_t dev, struct resource *res, int flags, 333 driver_intr_t hand, void *param, void **cookiep); 334 335 void *snd_mtxcreate(const char *desc, const char *type); 336 void snd_mtxfree(void *m); 337 void snd_mtxassert(void *m); 338 #define snd_mtxlock(m) mtx_lock(m) 339 #define snd_mtxunlock(m) mtx_unlock(m) 340 341 int sndstat_register(device_t dev, char *str); 342 int sndstat_unregister(device_t dev); 343 344 /* usage of flags in device config entry (config file) */ 345 #define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */ 346 #define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */ 347 348 /* ought to be made obsolete but still used by mss */ 349 #define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */ 350 #define DV_F_DEV_SHIFT 8 /* force device type/class */ 351 352 /* 353 * this is rather kludgey- we need to duplicate these struct def'ns from sound.c 354 * so that the macro versions of pcm_{,un}lock can dereference them. 355 * we also have to do this now makedev() has gone away. 356 */ 357 358 struct snddev_info { 359 struct { 360 struct { 361 SLIST_HEAD(, pcm_channel) head; 362 struct { 363 SLIST_HEAD(, pcm_channel) head; 364 } busy; 365 struct { 366 SLIST_HEAD(, pcm_channel) head; 367 } opened; 368 } pcm; 369 } channels; 370 unsigned devcount, playcount, reccount, pvchancount, rvchancount ; 371 unsigned flags; 372 unsigned int bufsz; 373 void *devinfo; 374 device_t dev; 375 char status[SND_STATUSLEN]; 376 struct mtx *lock; 377 struct cdev *mixer_dev; 378 struct cdev *dsp_dev; 379 uint32_t pvchanrate, pvchanformat; 380 uint32_t rvchanrate, rvchanformat; 381 int32_t eqpreamp; 382 struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx; 383 struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree; 384 struct cv cv; 385 }; 386 387 void sound_oss_sysinfo(oss_sysinfo *); 388 int sound_oss_card_info(oss_card_info *); 389 390 #define PCM_MODE_MIXER 0x01 391 #define PCM_MODE_PLAY 0x02 392 #define PCM_MODE_REC 0x04 393 394 #define PCM_LOCKOWNED(d) mtx_owned((d)->lock) 395 #define PCM_LOCK(d) mtx_lock((d)->lock) 396 #define PCM_UNLOCK(d) mtx_unlock((d)->lock) 397 #define PCM_TRYLOCK(d) mtx_trylock((d)->lock) 398 #define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED) 399 #define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED) 400 401 /* 402 * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these 403 * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you! 404 */ 405 #ifdef SND_DIAGNOSTIC 406 #define PCM_WAIT(x) do { \ 407 if (!PCM_LOCKOWNED(x)) \ 408 panic("%s(%d): [PCM WAIT] Mutex not owned!", \ 409 __func__, __LINE__); \ 410 while ((x)->flags & SD_F_BUSY) { \ 411 if (snd_verbose > 3) \ 412 device_printf((x)->dev, \ 413 "%s(%d): [PCM WAIT] calling cv_wait().\n", \ 414 __func__, __LINE__); \ 415 cv_wait(&(x)->cv, (x)->lock); \ 416 } \ 417 } while (0) 418 419 #define PCM_ACQUIRE(x) do { \ 420 if (!PCM_LOCKOWNED(x)) \ 421 panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \ 422 __func__, __LINE__); \ 423 if ((x)->flags & SD_F_BUSY) \ 424 panic("%s(%d): [PCM ACQUIRE] " \ 425 "Trying to acquire BUSY cv!", __func__, __LINE__); \ 426 (x)->flags |= SD_F_BUSY; \ 427 } while (0) 428 429 #define PCM_RELEASE(x) do { \ 430 if (!PCM_LOCKOWNED(x)) \ 431 panic("%s(%d): [PCM RELEASE] Mutex not owned!", \ 432 __func__, __LINE__); \ 433 if ((x)->flags & SD_F_BUSY) { \ 434 (x)->flags &= ~SD_F_BUSY; \ 435 if ((x)->cv.cv_waiters != 0) { \ 436 if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \ 437 device_printf((x)->dev, \ 438 "%s(%d): [PCM RELEASE] " \ 439 "cv_waiters=%d > 1!\n", \ 440 __func__, __LINE__, \ 441 (x)->cv.cv_waiters); \ 442 cv_broadcast(&(x)->cv); \ 443 } \ 444 } else \ 445 panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 446 __func__, __LINE__); \ 447 } while (0) 448 449 /* Quick version, for shorter path. */ 450 #define PCM_ACQUIRE_QUICK(x) do { \ 451 if (PCM_LOCKOWNED(x)) \ 452 panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \ 453 __func__, __LINE__); \ 454 PCM_LOCK(x); \ 455 PCM_WAIT(x); \ 456 PCM_ACQUIRE(x); \ 457 PCM_UNLOCK(x); \ 458 } while (0) 459 460 #define PCM_RELEASE_QUICK(x) do { \ 461 if (PCM_LOCKOWNED(x)) \ 462 panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \ 463 __func__, __LINE__); \ 464 PCM_LOCK(x); \ 465 PCM_RELEASE(x); \ 466 PCM_UNLOCK(x); \ 467 } while (0) 468 469 #define PCM_BUSYASSERT(x) do { \ 470 if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \ 471 panic("%s(%d): [PCM BUSYASSERT] " \ 472 "Failed, snddev_info=%p", __func__, __LINE__, x); \ 473 } while (0) 474 475 #define PCM_GIANT_ENTER(x) do { \ 476 int _pcm_giant = 0; \ 477 if (PCM_LOCKOWNED(x)) \ 478 panic("%s(%d): [GIANT ENTER] PCM lock owned!", \ 479 __func__, __LINE__); \ 480 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 481 device_printf((x)->dev, \ 482 "%s(%d): [GIANT ENTER] Giant owned!\n", \ 483 __func__, __LINE__); \ 484 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 485 do { \ 486 mtx_lock(&Giant); \ 487 _pcm_giant = 1; \ 488 } while (0) 489 490 #define PCM_GIANT_EXIT(x) do { \ 491 if (PCM_LOCKOWNED(x)) \ 492 panic("%s(%d): [GIANT EXIT] PCM lock owned!", \ 493 __func__, __LINE__); \ 494 if (!(_pcm_giant == 0 || _pcm_giant == 1)) \ 495 panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 496 __func__, __LINE__); \ 497 if ((x)->flags & SD_F_MPSAFE) { \ 498 if (_pcm_giant == 1) \ 499 panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 500 __func__, __LINE__); \ 501 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 502 device_printf((x)->dev, \ 503 "%s(%d): [GIANT EXIT] Giant owned!\n", \ 504 __func__, __LINE__); \ 505 } \ 506 if (_pcm_giant != 0) { \ 507 if (mtx_owned(&Giant) == 0) \ 508 panic("%s(%d): [GIANT EXIT] Giant not owned!", \ 509 __func__, __LINE__); \ 510 _pcm_giant = 0; \ 511 mtx_unlock(&Giant); \ 512 } \ 513 } while (0) 514 #else /* !SND_DIAGNOSTIC */ 515 #define PCM_WAIT(x) do { \ 516 PCM_LOCKASSERT(x); \ 517 while ((x)->flags & SD_F_BUSY) \ 518 cv_wait(&(x)->cv, (x)->lock); \ 519 } while (0) 520 521 #define PCM_ACQUIRE(x) do { \ 522 PCM_LOCKASSERT(x); \ 523 KASSERT(!((x)->flags & SD_F_BUSY), \ 524 ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \ 525 __func__, __LINE__)); \ 526 (x)->flags |= SD_F_BUSY; \ 527 } while (0) 528 529 #define PCM_RELEASE(x) do { \ 530 PCM_LOCKASSERT(x); \ 531 KASSERT((x)->flags & SD_F_BUSY, \ 532 ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 533 __func__, __LINE__)); \ 534 (x)->flags &= ~SD_F_BUSY; \ 535 if ((x)->cv.cv_waiters != 0) \ 536 cv_broadcast(&(x)->cv); \ 537 } while (0) 538 539 /* Quick version, for shorter path. */ 540 #define PCM_ACQUIRE_QUICK(x) do { \ 541 PCM_UNLOCKASSERT(x); \ 542 PCM_LOCK(x); \ 543 PCM_WAIT(x); \ 544 PCM_ACQUIRE(x); \ 545 PCM_UNLOCK(x); \ 546 } while (0) 547 548 #define PCM_RELEASE_QUICK(x) do { \ 549 PCM_UNLOCKASSERT(x); \ 550 PCM_LOCK(x); \ 551 PCM_RELEASE(x); \ 552 PCM_UNLOCK(x); \ 553 } while (0) 554 555 #define PCM_BUSYASSERT(x) KASSERT(x != NULL && \ 556 ((x)->flags & SD_F_BUSY), \ 557 ("%s(%d): [PCM BUSYASSERT] " \ 558 "Failed, snddev_info=%p", \ 559 __func__, __LINE__, x)) 560 561 #define PCM_GIANT_ENTER(x) do { \ 562 int _pcm_giant = 0; \ 563 PCM_UNLOCKASSERT(x); \ 564 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 565 do { \ 566 mtx_lock(&Giant); \ 567 _pcm_giant = 1; \ 568 } while (0) 569 570 #define PCM_GIANT_EXIT(x) do { \ 571 PCM_UNLOCKASSERT(x); \ 572 KASSERT(_pcm_giant == 0 || _pcm_giant == 1, \ 573 ("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 574 __func__, __LINE__)); \ 575 KASSERT(!((x)->flags & SD_F_MPSAFE) || \ 576 (((x)->flags & SD_F_MPSAFE) && _pcm_giant == 0), \ 577 ("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 578 __func__, __LINE__)); \ 579 if (_pcm_giant != 0) { \ 580 mtx_assert(&Giant, MA_OWNED); \ 581 _pcm_giant = 0; \ 582 mtx_unlock(&Giant); \ 583 } \ 584 } while (0) 585 #endif /* SND_DIAGNOSTIC */ 586 587 #define PCM_GIANT_LEAVE(x) \ 588 PCM_GIANT_EXIT(x); \ 589 } while (0) 590 591 #endif /* _KERNEL */ 592 593 #endif /* _OS_H_ */ 594