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/sysctl.h> 66 #include <sys/kobj.h> 67 #include <vm/vm.h> 68 #include <vm/pmap.h> 69 70 #include <sys/lock.h> 71 #include <sys/mutex.h> 72 #include <sys/condvar.h> 73 74 #ifndef KOBJMETHOD_END 75 #define KOBJMETHOD_END { NULL, NULL } 76 #endif 77 78 struct pcm_channel; 79 struct pcm_feeder; 80 struct snd_dbuf; 81 struct snd_mixer; 82 83 #include <dev/sound/pcm/buffer.h> 84 #include <dev/sound/pcm/matrix.h> 85 #include <dev/sound/pcm/matrix_map.h> 86 #include <dev/sound/pcm/channel.h> 87 #include <dev/sound/pcm/feeder.h> 88 #include <dev/sound/pcm/mixer.h> 89 #include <dev/sound/pcm/dsp.h> 90 #include <dev/sound/clone.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 PCMMAXCLONE PCMMAXCHAN 115 116 #define PCMUNIT(x) (snd_unit2u(dev2unit(x))) 117 #define PCMDEV(x) (snd_unit2d(dev2unit(x))) 118 #define PCMCHAN(x) (snd_unit2c(dev2unit(x))) 119 120 /* XXX unit2minor compat */ 121 #define PCMMINOR(x) (x) 122 123 /* 124 * By design, limit possible channels for each direction. 125 */ 126 #define SND_MAXHWCHAN 256 127 #define SND_MAXVCHANS SND_MAXHWCHAN 128 129 #define SD_F_SIMPLEX 0x00000001 130 #define SD_F_AUTOVCHAN 0x00000002 131 #define SD_F_SOFTPCMVOL 0x00000004 132 #define SD_F_DYING 0x00000008 133 #define SD_F_DETACHING 0x00000010 134 #define SD_F_BUSY 0x00000020 135 #define SD_F_MPSAFE 0x00000040 136 #define SD_F_REGISTERED 0x00000080 137 #define SD_F_BITPERFECT 0x00000100 138 #define SD_F_VPC 0x00000200 /* volume-per-channel */ 139 #define SD_F_EQ 0x00000400 /* EQ */ 140 #define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */ 141 #define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */ 142 #define SD_F_EQ_PC 0x00002000 /* EQ per-channel */ 143 144 #define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED) 145 #define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \ 146 SD_F_EQ_BYPASSED | SD_F_EQ_PC) 147 148 #define SD_F_PRIO_RD 0x10000000 149 #define SD_F_PRIO_WR 0x20000000 150 #define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR) 151 #define SD_F_DIR_SET 0x40000000 152 #define SD_F_TRANSIENT 0xf0000000 153 154 #define SD_F_BITS "\020" \ 155 "\001SIMPLEX" \ 156 "\002AUTOVCHAN" \ 157 "\003SOFTPCMVOL" \ 158 "\004DYING" \ 159 "\005DETACHING" \ 160 "\006BUSY" \ 161 "\007MPSAFE" \ 162 "\010REGISTERED" \ 163 "\011BITPERFECT" \ 164 "\012VPC" \ 165 "\013EQ" \ 166 "\014EQ_ENABLED" \ 167 "\015EQ_BYPASSED" \ 168 "\016EQ_PC" \ 169 "\035PRIO_RD" \ 170 "\036PRIO_WR" \ 171 "\037DIR_SET" 172 173 #define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \ 174 !((x)->flags & SD_F_DYING)) 175 #define PCM_REGISTERED(x) (PCM_ALIVE(x) && \ 176 ((x)->flags & SD_F_REGISTERED)) 177 178 #define PCM_DETACHING(x) ((x)->flags & SD_F_DETACHING) 179 180 /* many variables should be reduced to a range. Here define a macro */ 181 #define RANGE(var, low, high) (var) = \ 182 (((var)<(low))? (low) : ((var)>(high))? (high) : (var)) 183 #define DSP_BUFFSIZE (8192) 184 185 /* make figuring out what a format is easier. got AFMT_STEREO already */ 186 #define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE) 187 #define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE) 188 #define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE) 189 #define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW) 190 #define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8) 191 #define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \ 192 AFMT_S16_LE | AFMT_S16_BE | AFMT_S8) 193 #define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \ 194 AFMT_S16_BE | AFMT_U16_BE) 195 196 #define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \ 197 AFMT_32BIT) 198 199 /* Supported vchan mixing formats */ 200 #define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711) 201 202 #define AFMT_PASSTHROUGH AFMT_AC3 203 #define AFMT_PASSTHROUGH_RATE 48000 204 #define AFMT_PASSTHROUGH_CHANNEL 2 205 #define AFMT_PASSTHROUGH_EXTCHANNEL 0 206 207 /* 208 * We're simply using unused, contiguous bits from various AFMT_ definitions. 209 * ~(0xb00ff7ff) 210 */ 211 #define AFMT_ENCODING_MASK 0xf00fffff 212 #define AFMT_CHANNEL_MASK 0x07f00000 213 #define AFMT_CHANNEL_SHIFT 20 214 #define AFMT_CHANNEL_MAX 0x7f 215 #define AFMT_EXTCHANNEL_MASK 0x08000000 216 #define AFMT_EXTCHANNEL_SHIFT 27 217 #define AFMT_EXTCHANNEL_MAX 1 218 219 #define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK) 220 221 #define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \ 222 AFMT_EXTCHANNEL_SHIFT) 223 224 #define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \ 225 AFMT_CHANNEL_SHIFT) 226 227 #define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \ 228 (((v) & AFMT_24BIT) ? 24 : \ 229 ((((v) & AFMT_16BIT) || \ 230 ((v) & AFMT_PASSTHROUGH)) ? 16 : 8))) 231 232 #define AFMT_BPS(v) (AFMT_BIT(v) >> 3) 233 #define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v)) 234 235 #define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \ 236 (((c) << AFMT_CHANNEL_SHIFT) & \ 237 AFMT_CHANNEL_MASK) | \ 238 (((e) << AFMT_EXTCHANNEL_SHIFT) & \ 239 AFMT_EXTCHANNEL_MASK)) 240 241 #define AFMT_U8_NE AFMT_U8 242 #define AFMT_S8_NE AFMT_S8 243 244 #define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE) 245 246 #define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \ 247 AFMT_U24_NE | AFMT_U32_NE) 248 249 /* 250 * Minor numbers for the sound driver. 251 * 252 * Unfortunately Creative called the codec chip of SB as a DSP. For this 253 * reason the /dev/dsp is reserved for digitized audio use. There is a 254 * device for true DSP processors but it will be called something else. 255 * In v3.0 it's /dev/sndproc but this could be a temporary solution. 256 */ 257 258 #define SND_DEV_CTL 0 /* Control port /dev/mixer */ 259 #define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */ 260 #define SND_DEV_MIDIN 2 /* Raw midi access */ 261 #define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */ 262 #define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */ 263 #define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */ 264 #define SND_DEV_STATUS 6 /* /dev/sndstat */ 265 /* #7 not in use now. */ 266 #define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */ 267 #define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */ 268 #define SND_DEV_PSS SND_DEV_SNDPROC /* ? */ 269 #define SND_DEV_NORESET 10 270 271 #define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */ 272 #define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */ 273 #define SND_DEV_DSPHW_REC 13 /* specific record channel */ 274 #define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */ 275 276 #define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */ 277 278 /* 279 * OSSv4 compatible device. For now, it serve no purpose and 280 * the cloning itself will forward the request to ordinary /dev/dsp 281 * instead. 282 */ 283 #define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */ 284 #define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */ 285 #define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */ 286 #define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */ 287 #define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */ 288 289 #define SND_DEV_LAST SND_DEV_DSP_SPDIFIN 290 #define SND_DEV_MAX PCMMAXDEV 291 292 #define DSP_DEFAULT_SPEED 8000 293 294 #define ON 1 295 #define OFF 0 296 297 extern int pcm_veto_load; 298 extern int snd_unit; 299 extern int snd_maxautovchans; 300 extern int snd_verbose; 301 extern devclass_t pcm_devclass; 302 extern struct unrhdr *pcmsg_unrhdr; 303 304 /* 305 * some macros for debugging purposes 306 * DDB/DEB to enable/disable debugging stuff 307 * BVDDB to enable debugging when bootverbose 308 */ 309 #define BVDDB(x) if (bootverbose) x 310 311 #ifndef DEB 312 #define DEB(x) 313 #endif 314 315 SYSCTL_DECL(_hw_snd); 316 317 int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num); 318 int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, 319 pid_t pid, char *comm, int devunit); 320 int pcm_chnrelease(struct pcm_channel *c); 321 int pcm_chnref(struct pcm_channel *c, int ref); 322 int pcm_inprog(struct snddev_info *d, int delta); 323 324 struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo); 325 int pcm_chn_destroy(struct pcm_channel *ch); 326 int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch); 327 int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch); 328 329 int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo); 330 unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz); 331 int pcm_register(device_t dev, void *devinfo, int numplay, int numrec); 332 int pcm_unregister(device_t dev); 333 int pcm_setstatus(device_t dev, char *str); 334 u_int32_t pcm_getflags(device_t dev); 335 void pcm_setflags(device_t dev, u_int32_t val); 336 void *pcm_getdevinfo(device_t dev); 337 338 int snd_setup_intr(device_t dev, struct resource *res, int flags, 339 driver_intr_t hand, void *param, void **cookiep); 340 341 void *snd_mtxcreate(const char *desc, const char *type); 342 void snd_mtxfree(void *m); 343 void snd_mtxassert(void *m); 344 #define snd_mtxlock(m) mtx_lock(m) 345 #define snd_mtxunlock(m) mtx_unlock(m) 346 347 typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose); 348 int sndstat_register(device_t dev, char *str, sndstat_handler handler); 349 void sndstat_registerfile(void *); 350 int sndstat_unregister(device_t dev); 351 void sndstat_unregisterfile(void *); 352 353 #define SND_DECLARE_FILE(version) 354 355 /* usage of flags in device config entry (config file) */ 356 #define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */ 357 #define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */ 358 359 /* ought to be made obsolete but still used by mss */ 360 #define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */ 361 #define DV_F_DEV_SHIFT 8 /* force device type/class */ 362 363 /* 364 * this is rather kludgey- we need to duplicate these struct def'ns from sound.c 365 * so that the macro versions of pcm_{,un}lock can dereference them. 366 * we also have to do this now makedev() has gone away. 367 */ 368 369 struct snddev_info { 370 struct { 371 struct { 372 SLIST_HEAD(, pcm_channel) head; 373 struct { 374 SLIST_HEAD(, pcm_channel) head; 375 } busy; 376 struct { 377 SLIST_HEAD(, pcm_channel) head; 378 } opened; 379 } pcm; 380 } channels; 381 TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool; 382 struct snd_clone *clones; 383 unsigned devcount, playcount, reccount, pvchancount, rvchancount ; 384 unsigned flags; 385 int inprog; 386 unsigned int bufsz; 387 void *devinfo; 388 device_t dev; 389 char status[SND_STATUSLEN]; 390 struct mtx *lock; 391 struct cdev *mixer_dev; 392 uint32_t pvchanrate, pvchanformat; 393 uint32_t rvchanrate, rvchanformat; 394 int32_t eqpreamp; 395 struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx; 396 struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree; 397 struct cv cv; 398 }; 399 400 void sound_oss_sysinfo(oss_sysinfo *); 401 int sound_oss_card_info(oss_card_info *); 402 403 #define PCM_MODE_MIXER 0x01 404 #define PCM_MODE_PLAY 0x02 405 #define PCM_MODE_REC 0x04 406 407 #define PCM_LOCKOWNED(d) mtx_owned((d)->lock) 408 #define PCM_LOCK(d) mtx_lock((d)->lock) 409 #define PCM_UNLOCK(d) mtx_unlock((d)->lock) 410 #define PCM_TRYLOCK(d) mtx_trylock((d)->lock) 411 #define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED) 412 #define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED) 413 414 /* 415 * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these 416 * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you! 417 */ 418 #ifdef SND_DIAGNOSTIC 419 #define PCM_WAIT(x) do { \ 420 if (!PCM_LOCKOWNED(x)) \ 421 panic("%s(%d): [PCM WAIT] Mutex not owned!", \ 422 __func__, __LINE__); \ 423 while ((x)->flags & SD_F_BUSY) { \ 424 if (snd_verbose > 3) \ 425 device_printf((x)->dev, \ 426 "%s(%d): [PCM WAIT] calling cv_wait().\n", \ 427 __func__, __LINE__); \ 428 cv_wait(&(x)->cv, (x)->lock); \ 429 } \ 430 } while (0) 431 432 #define PCM_ACQUIRE(x) do { \ 433 if (!PCM_LOCKOWNED(x)) \ 434 panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \ 435 __func__, __LINE__); \ 436 if ((x)->flags & SD_F_BUSY) \ 437 panic("%s(%d): [PCM ACQUIRE] " \ 438 "Trying to acquire BUSY cv!", __func__, __LINE__); \ 439 (x)->flags |= SD_F_BUSY; \ 440 } while (0) 441 442 #define PCM_RELEASE(x) do { \ 443 if (!PCM_LOCKOWNED(x)) \ 444 panic("%s(%d): [PCM RELEASE] Mutex not owned!", \ 445 __func__, __LINE__); \ 446 if ((x)->flags & SD_F_BUSY) { \ 447 (x)->flags &= ~SD_F_BUSY; \ 448 if ((x)->cv.cv_waiters != 0) { \ 449 if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \ 450 device_printf((x)->dev, \ 451 "%s(%d): [PCM RELEASE] " \ 452 "cv_waiters=%d > 1!\n", \ 453 __func__, __LINE__, \ 454 (x)->cv.cv_waiters); \ 455 cv_broadcast(&(x)->cv); \ 456 } \ 457 } else \ 458 panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 459 __func__, __LINE__); \ 460 } while (0) 461 462 /* Quick version, for shorter path. */ 463 #define PCM_ACQUIRE_QUICK(x) do { \ 464 if (PCM_LOCKOWNED(x)) \ 465 panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \ 466 __func__, __LINE__); \ 467 PCM_LOCK(x); \ 468 PCM_WAIT(x); \ 469 PCM_ACQUIRE(x); \ 470 PCM_UNLOCK(x); \ 471 } while (0) 472 473 #define PCM_RELEASE_QUICK(x) do { \ 474 if (PCM_LOCKOWNED(x)) \ 475 panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \ 476 __func__, __LINE__); \ 477 PCM_LOCK(x); \ 478 PCM_RELEASE(x); \ 479 PCM_UNLOCK(x); \ 480 } while (0) 481 482 #define PCM_BUSYASSERT(x) do { \ 483 if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \ 484 panic("%s(%d): [PCM BUSYASSERT] " \ 485 "Failed, snddev_info=%p", __func__, __LINE__, x); \ 486 } while (0) 487 488 #define PCM_GIANT_ENTER(x) do { \ 489 int _pcm_giant = 0; \ 490 if (PCM_LOCKOWNED(x)) \ 491 panic("%s(%d): [GIANT ENTER] PCM lock owned!", \ 492 __func__, __LINE__); \ 493 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 494 device_printf((x)->dev, \ 495 "%s(%d): [GIANT ENTER] Giant owned!\n", \ 496 __func__, __LINE__); \ 497 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 498 do { \ 499 mtx_lock(&Giant); \ 500 _pcm_giant = 1; \ 501 } while (0) 502 503 #define PCM_GIANT_EXIT(x) do { \ 504 if (PCM_LOCKOWNED(x)) \ 505 panic("%s(%d): [GIANT EXIT] PCM lock owned!", \ 506 __func__, __LINE__); \ 507 if (!(_pcm_giant == 0 || _pcm_giant == 1)) \ 508 panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 509 __func__, __LINE__); \ 510 if ((x)->flags & SD_F_MPSAFE) { \ 511 if (_pcm_giant == 1) \ 512 panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 513 __func__, __LINE__); \ 514 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 515 device_printf((x)->dev, \ 516 "%s(%d): [GIANT EXIT] Giant owned!\n", \ 517 __func__, __LINE__); \ 518 } \ 519 if (_pcm_giant != 0) { \ 520 if (mtx_owned(&Giant) == 0) \ 521 panic("%s(%d): [GIANT EXIT] Giant not owned!", \ 522 __func__, __LINE__); \ 523 _pcm_giant = 0; \ 524 mtx_unlock(&Giant); \ 525 } \ 526 } while (0) 527 #else /* SND_DIAGNOSTIC */ 528 #define PCM_WAIT(x) do { \ 529 PCM_LOCKASSERT(x); \ 530 while ((x)->flags & SD_F_BUSY) \ 531 cv_wait(&(x)->cv, (x)->lock); \ 532 } while (0) 533 534 #define PCM_ACQUIRE(x) do { \ 535 PCM_LOCKASSERT(x); \ 536 KASSERT(!((x)->flags & SD_F_BUSY), \ 537 ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \ 538 __func__, __LINE__)); \ 539 (x)->flags |= SD_F_BUSY; \ 540 } while (0) 541 542 #define PCM_RELEASE(x) do { \ 543 PCM_LOCKASSERT(x); \ 544 KASSERT((x)->flags & SD_F_BUSY, \ 545 ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 546 __func__, __LINE__)); \ 547 (x)->flags &= ~SD_F_BUSY; \ 548 if ((x)->cv.cv_waiters != 0) \ 549 cv_broadcast(&(x)->cv); \ 550 } while (0) 551 552 /* Quick version, for shorter path. */ 553 #define PCM_ACQUIRE_QUICK(x) do { \ 554 PCM_UNLOCKASSERT(x); \ 555 PCM_LOCK(x); \ 556 PCM_WAIT(x); \ 557 PCM_ACQUIRE(x); \ 558 PCM_UNLOCK(x); \ 559 } while (0) 560 561 #define PCM_RELEASE_QUICK(x) do { \ 562 PCM_UNLOCKASSERT(x); \ 563 PCM_LOCK(x); \ 564 PCM_RELEASE(x); \ 565 PCM_UNLOCK(x); \ 566 } while (0) 567 568 #define PCM_BUSYASSERT(x) KASSERT(x != NULL && \ 569 ((x)->flags & SD_F_BUSY), \ 570 ("%s(%d): [PCM BUSYASSERT] " \ 571 "Failed, snddev_info=%p", \ 572 __func__, __LINE__, x)) 573 574 #define PCM_GIANT_ENTER(x) do { \ 575 int _pcm_giant = 0; \ 576 PCM_UNLOCKASSERT(x); \ 577 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 578 do { \ 579 mtx_lock(&Giant); \ 580 _pcm_giant = 1; \ 581 } while (0) 582 583 #define PCM_GIANT_EXIT(x) do { \ 584 PCM_UNLOCKASSERT(x); \ 585 KASSERT(_pcm_giant == 0 || _pcm_giant == 1, \ 586 ("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 587 __func__, __LINE__)); \ 588 KASSERT(!((x)->flags & SD_F_MPSAFE) || \ 589 (((x)->flags & SD_F_MPSAFE) && _pcm_giant == 0), \ 590 ("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 591 __func__, __LINE__)); \ 592 if (_pcm_giant != 0) { \ 593 mtx_assert(&Giant, MA_OWNED); \ 594 _pcm_giant = 0; \ 595 mtx_unlock(&Giant); \ 596 } \ 597 } while (0) 598 #endif /* !SND_DIAGNOSTIC */ 599 600 #define PCM_GIANT_LEAVE(x) \ 601 PCM_GIANT_EXIT(x); \ 602 } while (0) 603 604 #ifdef KLD_MODULE 605 #define PCM_KLDSTRING(a) ("kld " # a) 606 #else 607 #define PCM_KLDSTRING(a) "" 608 #endif 609 610 #endif /* _KERNEL */ 611 612 #endif /* _OS_H_ */ 613