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