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: head/sys/dev/sound/pcm/sound.h 274035 2014-11-03 11:11:45Z bapt $ 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/proc.h> 46 #include <sys/kernel.h> /* for DATA_SET */ 47 #include <sys/module.h> 48 #include <sys/conf.h> 49 #include <sys/file.h> 50 #include <sys/uio.h> 51 #include <sys/syslog.h> 52 #include <sys/errno.h> 53 #include <sys/malloc.h> 54 #include <sys/bus.h> 55 #include <sys/rman.h> 56 #include <sys/limits.h> 57 #include <sys/mman.h> 58 #include <sys/poll.h> 59 #include <sys/sbuf.h> 60 #include <sys/soundcard.h> 61 #include <sys/sysctl.h> 62 #include <sys/kobj.h> 63 #include <vm/vm.h> 64 #include <vm/pmap.h> 65 66 #include <sys/lock.h> 67 #include <sys/mplock2.h> 68 #include <sys/mutex.h> 69 #include <sys/condvar.h> 70 #include <sys/taskqueue.h> 71 72 #ifndef KOBJMETHOD_END 73 #define KOBJMETHOD_END { NULL, NULL } 74 #endif 75 76 struct pcm_channel; 77 struct pcm_feeder; 78 struct snd_dbuf; 79 struct snd_mixer; 80 81 #include <dev/sound/pcm/buffer.h> 82 #include <dev/sound/pcm/matrix.h> 83 #include <dev/sound/pcm/matrix_map.h> 84 #include <dev/sound/pcm/channel.h> 85 #include <dev/sound/pcm/feeder.h> 86 #include <dev/sound/pcm/mixer.h> 87 #include <dev/sound/pcm/dsp.h> 88 #include <dev/sound/clone.h> 89 #include <dev/sound/unit.h> 90 91 #define PCM_SOFTC_SIZE (sizeof(struct snddev_info)) 92 93 #define SND_STATUSLEN 64 94 95 #define SOUND_MODVER 5 96 97 #define SOUND_MINVER SOUND_MODVER 98 #define SOUND_PREFVER SOUND_MODVER 99 #define SOUND_MAXVER SOUND_MODVER 100 101 /* 102 * Minor number encoding: 0xFFFF00FF 103 * unit 0x000000FF 104 * chan 0x07FF0000 105 * devtype 0xF8000000 106 */ 107 108 #define SND_U_MASK 0x000000FF 109 #define SND_C_MASK 0x07FF0000 110 #define SND_D_MASK 0xF8000000 111 112 #define PCMMAXUNIT 255 113 #define PCMMAXDEV 31 114 #define PCMMAXCHAN 2047 115 #define PCMMAXCLONE PCMMAXCHAN 116 117 /* 118 * 119 */ 120 #define PCMUNIT(x) (minor(x) & 0x00FF) 121 #define PCMSUBUNIT(x) ((minor(x) >> 16) & 0x07FF) 122 #define PCMDEV(x) ((minor(x) >> 27) & 0x001F) 123 124 #define PCMUNIT_DEFAULT 0x00FF 125 126 #define PCMMKMINOR(u, d, sub) (snd_u2unit(u) | snd_c2unit(sub) | snd_d2unit(d)) 127 128 #define snd_unit2u(m) ((m) & 0x00FF) 129 #define snd_unit2c(m) (((m) >> 16) & 0x07FF) 130 #define snd_unit2d(m) (((m) >> 27) & 0x001F) 131 132 #define snd_u2unit(u) ((u) & 0x00FF) 133 #define snd_c2unit(c) (((c) & 0x07FF) << 16) 134 #define snd_d2unit(d) (((d) & 0x001F) << 27) 135 136 #define snd_mkunit(u, d, c) (snd_u2unit(u) | snd_d2unit(d) | snd_c2unit(c)) 137 138 /* 139 * By design, limit possible channels for each direction. 140 */ 141 #define SND_MAXHWCHAN 256 142 #define SND_MAXVCHANS SND_MAXHWCHAN 143 144 #define SD_F_SIMPLEX 0x00000001 145 #define SD_F_AUTOVCHAN 0x00000002 146 #define SD_F_SOFTPCMVOL 0x00000004 147 /* 148 * Obsolete due to better matrixing 149 */ 150 #if 0 151 #define SD_F_PSWAPLR 0x00000008 152 #define SD_F_RSWAPLR 0x00000010 153 #endif 154 #define SD_F_DYING 0x00000008 155 #define SD_F_SUICIDE 0x00000010 156 #define SD_F_BUSY 0x00000020 157 #define SD_F_MPSAFE 0x00000040 158 #define SD_F_REGISTERED 0x00000080 159 #define SD_F_BITPERFECT 0x00000100 160 #define SD_F_VPC 0x00000200 /* volume-per-channel */ 161 #define SD_F_EQ 0x00000400 /* EQ */ 162 #define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */ 163 #define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */ 164 #define SD_F_EQ_PC 0x00002000 /* EQ per-channel */ 165 166 #define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED) 167 #define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \ 168 SD_F_EQ_BYPASSED | SD_F_EQ_PC) 169 170 #define SD_F_PRIO_RD 0x10000000 171 #define SD_F_PRIO_WR 0x20000000 172 #define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR) 173 #define SD_F_DIR_SET 0x40000000 174 #define SD_F_TRANSIENT 0xf0000000 175 176 #define SD_F_BITS "\020" \ 177 "\001SIMPLEX" \ 178 "\002AUTOVCHAN" \ 179 "\003SOFTPCMVOL" \ 180 "\004DYING" \ 181 "\005SUICIDE" \ 182 "\006BUSY" \ 183 "\007MPSAFE" \ 184 "\010REGISTERED" \ 185 "\011BITPERFECT" \ 186 "\012VPC" \ 187 "\013EQ" \ 188 "\014EQ_ENABLED" \ 189 "\015EQ_BYPASSED" \ 190 "\016EQ_PC" \ 191 "\035PRIO_RD" \ 192 "\036PRIO_WR" \ 193 "\037DIR_SET" 194 195 #define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \ 196 !((x)->flags & SD_F_DYING)) 197 #define PCM_REGISTERED(x) (PCM_ALIVE(x) && \ 198 ((x)->flags & SD_F_REGISTERED)) 199 200 /* many variables should be reduced to a range. Here define a macro */ 201 #define RANGE(var, low, high) (var) = \ 202 (((var)<(low))? (low) : ((var)>(high))? (high) : (var)) 203 #define DSP_BUFFSIZE (8192) 204 205 /* make figuring out what a format is easier. got AFMT_STEREO already */ 206 #define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE) 207 #define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE) 208 #define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE) 209 #define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW) 210 #define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8) 211 #define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \ 212 AFMT_S16_LE | AFMT_S16_BE | AFMT_S8) 213 #define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \ 214 AFMT_S16_BE | AFMT_U16_BE) 215 216 #define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \ 217 AFMT_32BIT) 218 219 /* Supported vchan mixing formats */ 220 #define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711) 221 222 #define AFMT_PASSTHROUGH AFMT_AC3 223 #define AFMT_PASSTHROUGH_RATE 48000 224 #define AFMT_PASSTHROUGH_CHANNEL 2 225 #define AFMT_PASSTHROUGH_EXTCHANNEL 0 226 227 /* 228 * We're simply using unused, contiguous bits from various AFMT_ definitions. 229 * ~(0xb00ff7ff) 230 */ 231 #define AFMT_ENCODING_MASK 0xf00fffff 232 #define AFMT_CHANNEL_MASK 0x01f00000 233 #define AFMT_CHANNEL_SHIFT 20 234 #define AFMT_EXTCHANNEL_MASK 0x0e000000 235 #define AFMT_EXTCHANNEL_SHIFT 25 236 237 #define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK) 238 239 #define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \ 240 AFMT_EXTCHANNEL_SHIFT) 241 242 #define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \ 243 AFMT_CHANNEL_SHIFT) 244 245 #define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \ 246 (((v) & AFMT_24BIT) ? 24 : \ 247 ((((v) & AFMT_16BIT) || \ 248 ((v) & AFMT_PASSTHROUGH)) ? 16 : 8))) 249 250 #define AFMT_BPS(v) (AFMT_BIT(v) >> 3) 251 #define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v)) 252 253 #define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \ 254 (((c) << AFMT_CHANNEL_SHIFT) & \ 255 AFMT_CHANNEL_MASK) | \ 256 (((e) << AFMT_EXTCHANNEL_SHIFT) & \ 257 AFMT_EXTCHANNEL_MASK)) 258 259 #define AFMT_U8_NE AFMT_U8 260 #define AFMT_S8_NE AFMT_S8 261 262 #define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE) 263 264 #define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \ 265 AFMT_U24_NE | AFMT_U32_NE) 266 267 /* 268 * Minor numbers for the sound driver. 269 * 270 * Unfortunately Creative called the codec chip of SB as a DSP. For this 271 * reason the /dev/dsp is reserved for digitized audio use. There is a 272 * device for true DSP processors but it will be called something else. 273 * In v3.0 it's /dev/sndproc but this could be a temporary solution. 274 */ 275 276 #define SND_DEV_CTL 0 /* Control port /dev/mixer */ 277 #define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */ 278 #define SND_DEV_MIDIN 2 /* Raw midi access */ 279 #define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */ 280 #define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */ 281 #define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */ 282 #define SND_DEV_STATUS 6 /* /dev/sndstat */ 283 /* #7 not in use now. */ 284 #define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */ 285 #define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */ 286 #define SND_DEV_PSS SND_DEV_SNDPROC /* ? */ 287 #define SND_DEV_NORESET 10 288 289 #define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */ 290 #define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */ 291 #define SND_DEV_DSPHW_REC 13 /* specific record channel */ 292 #define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */ 293 294 #define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */ 295 296 /* 297 * OSSv4 compatible device. For now, it serve no purpose and 298 * the cloning itself will forward the request to ordinary /dev/dsp 299 * instead. 300 */ 301 #define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */ 302 #define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */ 303 #define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */ 304 #define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */ 305 #define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */ 306 307 #define SND_DEV_LAST SND_DEV_DSP_SPDIFIN 308 #define SND_DEV_MAX PCMMAXDEV 309 310 #define DSP_DEFAULT_SPEED 8000 311 312 #define ON 1 313 #define OFF 0 314 315 extern int pcm_veto_load; 316 extern int snd_unit; 317 extern int snd_maxautovchans; 318 extern int snd_verbose; 319 extern devclass_t pcm_devclass; 320 extern struct unrhdr *pcmsg_unrhdr; 321 322 /* 323 * some macros for debugging purposes 324 * DDB/DEB to enable/disable debugging stuff 325 * BVDDB to enable debugging when bootverbose 326 */ 327 #define BVDDB(x) if (bootverbose) x 328 329 #ifndef DEB 330 #define DEB(x) 331 #endif 332 333 SYSCTL_DECL(_hw_snd); 334 335 int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num); 336 int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, 337 pid_t pid, char *comm, int devunit); 338 int pcm_chnrelease(struct pcm_channel *c); 339 int pcm_chnref(struct pcm_channel *c, int ref); 340 int pcm_inprog(struct snddev_info *d, int delta); 341 342 struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo); 343 int pcm_chn_destroy(struct pcm_channel *ch); 344 int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch); 345 int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch); 346 347 int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo); 348 unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz); 349 int pcm_register(device_t dev, void *devinfo, int numplay, int numrec); 350 int pcm_unregister(device_t dev); 351 int pcm_setstatus(device_t dev, char *str); 352 u_int32_t pcm_getflags(device_t dev); 353 void pcm_setflags(device_t dev, u_int32_t val); 354 void *pcm_getdevinfo(device_t dev); 355 356 357 int snd_setup_intr(device_t dev, struct resource *res, int flags, 358 driver_intr_t hand, void *param, void **cookiep); 359 360 void *snd_mtxcreate(const char *desc, const char *type); 361 void snd_mtxfree(void *m); 362 void snd_mtxassert(void *m); 363 #define snd_mtxlock(m) lockmgr(m, LK_EXCLUSIVE) 364 #define snd_mtxunlock(m) lockmgr(m, LK_RELEASE) 365 366 typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose); 367 int sndstat_acquire(struct thread *td); 368 int sndstat_release(struct thread *td); 369 int sndstat_register(device_t dev, char *str, sndstat_handler handler); 370 int sndstat_registerfile(char *str); 371 int sndstat_unregister(device_t dev); 372 int sndstat_unregisterfile(char *str); 373 374 #define SND_DECLARE_FILE(version) \ 375 _SND_DECLARE_FILE(__LINE__, version) 376 377 #define _SND_DECLARE_FILE(uniq, version) \ 378 __SND_DECLARE_FILE(uniq, version) 379 380 #define __SND_DECLARE_FILE(uniq, version) \ 381 static char sndstat_vinfo[] = version; \ 382 SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \ 383 SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo); 384 385 /* usage of flags in device config entry (config file) */ 386 #define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */ 387 #define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */ 388 389 /* ought to be made obsolete but still used by mss */ 390 #define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */ 391 #define DV_F_DEV_SHIFT 8 /* force device type/class */ 392 393 /* 394 * this is rather kludgey- we need to duplicate these struct def'ns from sound.c 395 * so that the macro versions of pcm_{,un}lock can dereference them. 396 * we also have to do this now makedev() has gone away. 397 */ 398 399 struct snddev_info { 400 struct { 401 struct { 402 SLIST_HEAD(, pcm_channel) head; 403 struct { 404 SLIST_HEAD(, pcm_channel) head; 405 } busy; 406 struct { 407 SLIST_HEAD(, pcm_channel) head; 408 } opened; 409 } pcm; 410 } channels; 411 TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool; 412 struct snd_clone *clones; 413 unsigned devcount, playcount, reccount, pvchancount, rvchancount ; 414 unsigned flags; 415 int inprog; 416 unsigned int bufsz; 417 void *devinfo; 418 device_t dev; 419 char status[SND_STATUSLEN]; 420 struct lock *lock; 421 struct cdev *mixer_dev; 422 struct cdev *dsp_clonedev; 423 uint32_t pvchanrate, pvchanformat; 424 uint32_t rvchanrate, rvchanformat; 425 int32_t eqpreamp; 426 struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx; 427 struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree; 428 struct cv cv; 429 }; 430 431 void sound_oss_sysinfo(oss_sysinfo *); 432 int sound_oss_card_info(oss_card_info *); 433 434 #define PCM_LOCKOWNED(d) (lockstatus((d)->lock, curthread) == LK_EXCLUSIVE) 435 #define PCM_LOCK(d) lockmgr((d)->lock, LK_EXCLUSIVE) 436 #define PCM_UNLOCK(d) lockmgr((d)->lock, LK_RELEASE) 437 #define PCM_TRYLOCK(d) lockmgr((d)->lock, LK_EXCLUSIVE|LK_NOWAIT) 438 #define PCM_LOCKASSERT(d) KKASSERT(lockstatus((d)->lock, curthread) == LK_EXCLUSIVE) 439 #define PCM_UNLOCKASSERT(d) KKASSERT(lockstatus((d)->lock, curthread) != LK_EXCLUSIVE) 440 441 /* 442 * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these 443 * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you! 444 */ 445 #ifdef SND_DIAGNOSTIC 446 #define PCM_WAIT(x) do { \ 447 if (!PCM_LOCKOWNED(x)) \ 448 panic("%s(%d): [PCM WAIT] Mutex not owned!", \ 449 __func__, __LINE__); \ 450 while ((x)->flags & SD_F_BUSY) { \ 451 if (snd_verbose > 3) \ 452 device_printf((x)->dev, \ 453 "%s(%d): [PCM WAIT] calling cv_wait().\n", \ 454 __func__, __LINE__); \ 455 cv_wait(&(x)->cv, (x)->lock); \ 456 } \ 457 } while (0) 458 459 #define PCM_ACQUIRE(x) do { \ 460 if (!PCM_LOCKOWNED(x)) \ 461 panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \ 462 __func__, __LINE__); \ 463 if ((x)->flags & SD_F_BUSY) \ 464 panic("%s(%d): [PCM ACQUIRE] " \ 465 "Trying to acquire BUSY cv!", __func__, __LINE__); \ 466 (x)->flags |= SD_F_BUSY; \ 467 } while (0) 468 469 #define PCM_RELEASE(x) do { \ 470 if (!PCM_LOCKOWNED(x)) \ 471 panic("%s(%d): [PCM RELEASE] Mutex not owned!", \ 472 __func__, __LINE__); \ 473 if ((x)->flags & SD_F_BUSY) { \ 474 (x)->flags &= ~SD_F_BUSY; \ 475 if ((x)->cv.cv_waiters != 0) { \ 476 if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \ 477 device_printf((x)->dev, \ 478 "%s(%d): [PCM RELEASE] " \ 479 "cv_waiters=%d > 1!\n", \ 480 __func__, __LINE__, \ 481 (x)->cv.cv_waiters); \ 482 cv_broadcast(&(x)->cv); \ 483 } \ 484 } else \ 485 panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 486 __func__, __LINE__); \ 487 } while (0) 488 489 /* Quick version, for shorter path. */ 490 #define PCM_ACQUIRE_QUICK(x) do { \ 491 if (PCM_LOCKOWNED(x)) \ 492 panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \ 493 __func__, __LINE__); \ 494 PCM_LOCK(x); \ 495 PCM_WAIT(x); \ 496 PCM_ACQUIRE(x); \ 497 PCM_UNLOCK(x); \ 498 } while (0) 499 500 #define PCM_RELEASE_QUICK(x) do { \ 501 if (PCM_LOCKOWNED(x)) \ 502 panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \ 503 __func__, __LINE__); \ 504 PCM_LOCK(x); \ 505 PCM_RELEASE(x); \ 506 PCM_UNLOCK(x); \ 507 } while (0) 508 509 #define PCM_BUSYASSERT(x) do { \ 510 if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \ 511 panic("%s(%d): [PCM BUSYASSERT] " \ 512 "Failed, snddev_info=%p", __func__, __LINE__, x); \ 513 } while (0) 514 515 #define PCM_GIANT_ENTER(x) do { \ 516 int _pcm_giant = 0; \ 517 if (PCM_LOCKOWNED(x)) \ 518 panic("%s(%d): [GIANT ENTER] PCM lock owned!", \ 519 __func__, __LINE__); \ 520 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 521 device_printf((x)->dev, \ 522 "%s(%d): [GIANT ENTER] Giant owned!\n", \ 523 __func__, __LINE__); \ 524 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 525 do { \ 526 mtx_lock(&Giant); \ 527 _pcm_giant = 1; \ 528 } while (0) 529 530 #define PCM_GIANT_EXIT(x) do { \ 531 if (PCM_LOCKOWNED(x)) \ 532 panic("%s(%d): [GIANT EXIT] PCM lock owned!", \ 533 __func__, __LINE__); \ 534 if (!(_pcm_giant == 0 || _pcm_giant == 1)) \ 535 panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 536 __func__, __LINE__); \ 537 if ((x)->flags & SD_F_MPSAFE) { \ 538 if (_pcm_giant == 1) \ 539 panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 540 __func__, __LINE__); \ 541 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 542 device_printf((x)->dev, \ 543 "%s(%d): [GIANT EXIT] Giant owned!\n", \ 544 __func__, __LINE__); \ 545 } \ 546 if (_pcm_giant != 0) { \ 547 if (mtx_owned(&Giant) == 0) \ 548 panic("%s(%d): [GIANT EXIT] Giant not owned!", \ 549 __func__, __LINE__); \ 550 _pcm_giant = 0; \ 551 mtx_unlock(&Giant); \ 552 } \ 553 } while (0) 554 #else /* SND_DIAGNOSTIC */ 555 #define PCM_WAIT(x) do { \ 556 PCM_LOCKASSERT(x); \ 557 while ((x)->flags & SD_F_BUSY) \ 558 cv_wait(&(x)->cv, (x)->lock); \ 559 } while (0) 560 561 #define PCM_ACQUIRE(x) do { \ 562 PCM_LOCKASSERT(x); \ 563 KASSERT(!((x)->flags & SD_F_BUSY), \ 564 ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \ 565 __func__, __LINE__)); \ 566 (x)->flags |= SD_F_BUSY; \ 567 } while (0) 568 569 #define PCM_RELEASE(x) do { \ 570 PCM_LOCKASSERT(x); \ 571 KASSERT((x)->flags & SD_F_BUSY, \ 572 ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 573 __func__, __LINE__)); \ 574 (x)->flags &= ~SD_F_BUSY; \ 575 if ((x)->cv.cv_waiters != 0) \ 576 cv_broadcast(&(x)->cv); \ 577 } while (0) 578 579 /* Quick version, for shorter path. */ 580 #define PCM_ACQUIRE_QUICK(x) do { \ 581 PCM_UNLOCKASSERT(x); \ 582 PCM_LOCK(x); \ 583 PCM_WAIT(x); \ 584 PCM_ACQUIRE(x); \ 585 PCM_UNLOCK(x); \ 586 } while (0) 587 588 #define PCM_RELEASE_QUICK(x) do { \ 589 PCM_UNLOCKASSERT(x); \ 590 PCM_LOCK(x); \ 591 PCM_RELEASE(x); \ 592 PCM_UNLOCK(x); \ 593 } while (0) 594 595 #define PCM_BUSYASSERT(x) KASSERT(x != NULL && \ 596 ((x)->flags & SD_F_BUSY), \ 597 ("%s(%d): [PCM BUSYASSERT] " \ 598 "Failed, snddev_info=%p", \ 599 __func__, __LINE__, x)) 600 601 #define PCM_GIANT_ENTER(x) do { \ 602 if (!((x)->flags & SD_F_MPSAFE)) \ 603 get_mplock(); \ 604 } while (0) 605 606 #define PCM_GIANT_EXIT(x) do { \ 607 if (!((x)->flags & SD_F_MPSAFE)) \ 608 rel_mplock(); \ 609 } while (0) 610 #endif /* !SND_DIAGNOSTIC */ 611 612 #define PCM_GIANT_LEAVE(x) PCM_GIANT_EXIT(x) 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