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 /* 135 * Obsolete due to better matrixing 136 */ 137 #if 0 138 #define SD_F_PSWAPLR 0x00000008 139 #define SD_F_RSWAPLR 0x00000010 140 #endif 141 #define SD_F_DYING 0x00000008 142 #define SD_F_SUICIDE 0x00000010 143 #define SD_F_BUSY 0x00000020 144 #define SD_F_MPSAFE 0x00000040 145 #define SD_F_REGISTERED 0x00000080 146 #define SD_F_BITPERFECT 0x00000100 147 #define SD_F_VPC 0x00000200 /* volume-per-channel */ 148 #define SD_F_EQ 0x00000400 /* EQ */ 149 #define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */ 150 #define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */ 151 #define SD_F_EQ_PC 0x00002000 /* EQ per-channel */ 152 153 #define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED) 154 #define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \ 155 SD_F_EQ_BYPASSED | SD_F_EQ_PC) 156 157 #define SD_F_PRIO_RD 0x10000000 158 #define SD_F_PRIO_WR 0x20000000 159 #define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR) 160 #define SD_F_DIR_SET 0x40000000 161 #define SD_F_TRANSIENT 0xf0000000 162 163 #define SD_F_BITS "\020" \ 164 "\001SIMPLEX" \ 165 "\002AUTOVCHAN" \ 166 "\003SOFTPCMVOL" \ 167 "\004DYING" \ 168 "\005SUICIDE" \ 169 "\006BUSY" \ 170 "\007MPSAFE" \ 171 "\010REGISTERED" \ 172 "\011BITPERFECT" \ 173 "\012VPC" \ 174 "\013EQ" \ 175 "\014EQ_ENABLED" \ 176 "\015EQ_BYPASSED" \ 177 "\016EQ_PC" \ 178 "\035PRIO_RD" \ 179 "\036PRIO_WR" \ 180 "\037DIR_SET" 181 182 #define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \ 183 !((x)->flags & SD_F_DYING)) 184 #define PCM_REGISTERED(x) (PCM_ALIVE(x) && \ 185 ((x)->flags & SD_F_REGISTERED)) 186 187 /* many variables should be reduced to a range. Here define a macro */ 188 #define RANGE(var, low, high) (var) = \ 189 (((var)<(low))? (low) : ((var)>(high))? (high) : (var)) 190 #define DSP_BUFFSIZE (8192) 191 192 /* make figuring out what a format is easier. got AFMT_STEREO already */ 193 #define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE) 194 #define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE) 195 #define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE) 196 #define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW) 197 #define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8) 198 #define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \ 199 AFMT_S16_LE | AFMT_S16_BE | AFMT_S8) 200 #define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \ 201 AFMT_S16_BE | AFMT_U16_BE) 202 203 #define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \ 204 AFMT_32BIT) 205 206 /* Supported vchan mixing formats */ 207 #define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711) 208 209 #define AFMT_PASSTHROUGH AFMT_AC3 210 #define AFMT_PASSTHROUGH_RATE 48000 211 #define AFMT_PASSTHROUGH_CHANNEL 2 212 #define AFMT_PASSTHROUGH_EXTCHANNEL 0 213 214 /* 215 * We're simply using unused, contiguous bits from various AFMT_ definitions. 216 * ~(0xb00ff7ff) 217 */ 218 #define AFMT_ENCODING_MASK 0xf00fffff 219 #define AFMT_CHANNEL_MASK 0x07f00000 220 #define AFMT_CHANNEL_SHIFT 20 221 #define AFMT_CHANNEL_MAX 0x7f 222 #define AFMT_EXTCHANNEL_MASK 0x08000000 223 #define AFMT_EXTCHANNEL_SHIFT 27 224 #define AFMT_EXTCHANNEL_MAX 1 225 226 #define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK) 227 228 #define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \ 229 AFMT_EXTCHANNEL_SHIFT) 230 231 #define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \ 232 AFMT_CHANNEL_SHIFT) 233 234 #define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \ 235 (((v) & AFMT_24BIT) ? 24 : \ 236 ((((v) & AFMT_16BIT) || \ 237 ((v) & AFMT_PASSTHROUGH)) ? 16 : 8))) 238 239 #define AFMT_BPS(v) (AFMT_BIT(v) >> 3) 240 #define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v)) 241 242 #define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \ 243 (((c) << AFMT_CHANNEL_SHIFT) & \ 244 AFMT_CHANNEL_MASK) | \ 245 (((e) << AFMT_EXTCHANNEL_SHIFT) & \ 246 AFMT_EXTCHANNEL_MASK)) 247 248 #define AFMT_U8_NE AFMT_U8 249 #define AFMT_S8_NE AFMT_S8 250 251 #define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE) 252 253 #define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \ 254 AFMT_U24_NE | AFMT_U32_NE) 255 256 /* 257 * Minor numbers for the sound driver. 258 * 259 * Unfortunately Creative called the codec chip of SB as a DSP. For this 260 * reason the /dev/dsp is reserved for digitized audio use. There is a 261 * device for true DSP processors but it will be called something else. 262 * In v3.0 it's /dev/sndproc but this could be a temporary solution. 263 */ 264 265 #define SND_DEV_CTL 0 /* Control port /dev/mixer */ 266 #define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */ 267 #define SND_DEV_MIDIN 2 /* Raw midi access */ 268 #define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */ 269 #define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */ 270 #define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */ 271 #define SND_DEV_STATUS 6 /* /dev/sndstat */ 272 /* #7 not in use now. */ 273 #define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */ 274 #define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */ 275 #define SND_DEV_PSS SND_DEV_SNDPROC /* ? */ 276 #define SND_DEV_NORESET 10 277 278 #define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */ 279 #define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */ 280 #define SND_DEV_DSPHW_REC 13 /* specific record channel */ 281 #define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */ 282 283 #define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */ 284 285 /* 286 * OSSv4 compatible device. For now, it serve no purpose and 287 * the cloning itself will forward the request to ordinary /dev/dsp 288 * instead. 289 */ 290 #define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */ 291 #define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */ 292 #define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */ 293 #define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */ 294 #define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */ 295 296 #define SND_DEV_LAST SND_DEV_DSP_SPDIFIN 297 #define SND_DEV_MAX PCMMAXDEV 298 299 #define DSP_DEFAULT_SPEED 8000 300 301 #define ON 1 302 #define OFF 0 303 304 extern int pcm_veto_load; 305 extern int snd_unit; 306 extern int snd_maxautovchans; 307 extern int snd_verbose; 308 extern devclass_t pcm_devclass; 309 extern struct unrhdr *pcmsg_unrhdr; 310 311 /* 312 * some macros for debugging purposes 313 * DDB/DEB to enable/disable debugging stuff 314 * BVDDB to enable debugging when bootverbose 315 */ 316 #define BVDDB(x) if (bootverbose) x 317 318 #ifndef DEB 319 #define DEB(x) 320 #endif 321 322 SYSCTL_DECL(_hw_snd); 323 324 int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num); 325 int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, 326 pid_t pid, char *comm, int devunit); 327 int pcm_chnrelease(struct pcm_channel *c); 328 int pcm_chnref(struct pcm_channel *c, int ref); 329 int pcm_inprog(struct snddev_info *d, int delta); 330 331 struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo); 332 int pcm_chn_destroy(struct pcm_channel *ch); 333 int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch); 334 int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch); 335 336 int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo); 337 unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz); 338 int pcm_register(device_t dev, void *devinfo, int numplay, int numrec); 339 int pcm_unregister(device_t dev); 340 int pcm_setstatus(device_t dev, char *str); 341 u_int32_t pcm_getflags(device_t dev); 342 void pcm_setflags(device_t dev, u_int32_t val); 343 void *pcm_getdevinfo(device_t dev); 344 345 346 int snd_setup_intr(device_t dev, struct resource *res, int flags, 347 driver_intr_t hand, void *param, void **cookiep); 348 349 void *snd_mtxcreate(const char *desc, const char *type); 350 void snd_mtxfree(void *m); 351 void snd_mtxassert(void *m); 352 #define snd_mtxlock(m) mtx_lock(m) 353 #define snd_mtxunlock(m) mtx_unlock(m) 354 355 typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose); 356 int sndstat_register(device_t dev, char *str, sndstat_handler handler); 357 int sndstat_registerfile(char *str); 358 int sndstat_unregister(device_t dev); 359 int sndstat_unregisterfile(char *str); 360 361 #define SND_DECLARE_FILE(version) \ 362 _SND_DECLARE_FILE(__LINE__, version) 363 364 #define _SND_DECLARE_FILE(uniq, version) \ 365 __SND_DECLARE_FILE(uniq, version) 366 367 #define __SND_DECLARE_FILE(uniq, version) \ 368 static char sndstat_vinfo[] = version; \ 369 SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \ 370 SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo); 371 372 /* usage of flags in device config entry (config file) */ 373 #define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */ 374 #define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */ 375 376 /* ought to be made obsolete but still used by mss */ 377 #define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */ 378 #define DV_F_DEV_SHIFT 8 /* force device type/class */ 379 380 /* 381 * this is rather kludgey- we need to duplicate these struct def'ns from sound.c 382 * so that the macro versions of pcm_{,un}lock can dereference them. 383 * we also have to do this now makedev() has gone away. 384 */ 385 386 struct snddev_info { 387 struct { 388 struct { 389 SLIST_HEAD(, pcm_channel) head; 390 struct { 391 SLIST_HEAD(, pcm_channel) head; 392 } busy; 393 struct { 394 SLIST_HEAD(, pcm_channel) head; 395 } opened; 396 } pcm; 397 } channels; 398 TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool; 399 struct snd_clone *clones; 400 unsigned devcount, playcount, reccount, pvchancount, rvchancount ; 401 unsigned flags; 402 int inprog; 403 unsigned int bufsz; 404 void *devinfo; 405 device_t dev; 406 char status[SND_STATUSLEN]; 407 struct mtx *lock; 408 struct cdev *mixer_dev; 409 uint32_t pvchanrate, pvchanformat; 410 uint32_t rvchanrate, rvchanformat; 411 int32_t eqpreamp; 412 struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx; 413 struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree; 414 struct cv cv; 415 }; 416 417 void sound_oss_sysinfo(oss_sysinfo *); 418 int sound_oss_card_info(oss_card_info *); 419 420 #define PCM_LOCKOWNED(d) mtx_owned((d)->lock) 421 #define PCM_LOCK(d) mtx_lock((d)->lock) 422 #define PCM_UNLOCK(d) mtx_unlock((d)->lock) 423 #define PCM_TRYLOCK(d) mtx_trylock((d)->lock) 424 #define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED) 425 #define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED) 426 427 /* 428 * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these 429 * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you! 430 */ 431 #ifdef SND_DIAGNOSTIC 432 #define PCM_WAIT(x) do { \ 433 if (!PCM_LOCKOWNED(x)) \ 434 panic("%s(%d): [PCM WAIT] Mutex not owned!", \ 435 __func__, __LINE__); \ 436 while ((x)->flags & SD_F_BUSY) { \ 437 if (snd_verbose > 3) \ 438 device_printf((x)->dev, \ 439 "%s(%d): [PCM WAIT] calling cv_wait().\n", \ 440 __func__, __LINE__); \ 441 cv_wait(&(x)->cv, (x)->lock); \ 442 } \ 443 } while (0) 444 445 #define PCM_ACQUIRE(x) do { \ 446 if (!PCM_LOCKOWNED(x)) \ 447 panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \ 448 __func__, __LINE__); \ 449 if ((x)->flags & SD_F_BUSY) \ 450 panic("%s(%d): [PCM ACQUIRE] " \ 451 "Trying to acquire BUSY cv!", __func__, __LINE__); \ 452 (x)->flags |= SD_F_BUSY; \ 453 } while (0) 454 455 #define PCM_RELEASE(x) do { \ 456 if (!PCM_LOCKOWNED(x)) \ 457 panic("%s(%d): [PCM RELEASE] Mutex not owned!", \ 458 __func__, __LINE__); \ 459 if ((x)->flags & SD_F_BUSY) { \ 460 (x)->flags &= ~SD_F_BUSY; \ 461 if ((x)->cv.cv_waiters != 0) { \ 462 if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \ 463 device_printf((x)->dev, \ 464 "%s(%d): [PCM RELEASE] " \ 465 "cv_waiters=%d > 1!\n", \ 466 __func__, __LINE__, \ 467 (x)->cv.cv_waiters); \ 468 cv_broadcast(&(x)->cv); \ 469 } \ 470 } else \ 471 panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 472 __func__, __LINE__); \ 473 } while (0) 474 475 /* Quick version, for shorter path. */ 476 #define PCM_ACQUIRE_QUICK(x) do { \ 477 if (PCM_LOCKOWNED(x)) \ 478 panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \ 479 __func__, __LINE__); \ 480 PCM_LOCK(x); \ 481 PCM_WAIT(x); \ 482 PCM_ACQUIRE(x); \ 483 PCM_UNLOCK(x); \ 484 } while (0) 485 486 #define PCM_RELEASE_QUICK(x) do { \ 487 if (PCM_LOCKOWNED(x)) \ 488 panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \ 489 __func__, __LINE__); \ 490 PCM_LOCK(x); \ 491 PCM_RELEASE(x); \ 492 PCM_UNLOCK(x); \ 493 } while (0) 494 495 #define PCM_BUSYASSERT(x) do { \ 496 if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \ 497 panic("%s(%d): [PCM BUSYASSERT] " \ 498 "Failed, snddev_info=%p", __func__, __LINE__, x); \ 499 } while (0) 500 501 #define PCM_GIANT_ENTER(x) do { \ 502 int _pcm_giant = 0; \ 503 if (PCM_LOCKOWNED(x)) \ 504 panic("%s(%d): [GIANT ENTER] PCM lock owned!", \ 505 __func__, __LINE__); \ 506 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 507 device_printf((x)->dev, \ 508 "%s(%d): [GIANT ENTER] Giant owned!\n", \ 509 __func__, __LINE__); \ 510 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 511 do { \ 512 mtx_lock(&Giant); \ 513 _pcm_giant = 1; \ 514 } while (0) 515 516 #define PCM_GIANT_EXIT(x) do { \ 517 if (PCM_LOCKOWNED(x)) \ 518 panic("%s(%d): [GIANT EXIT] PCM lock owned!", \ 519 __func__, __LINE__); \ 520 if (!(_pcm_giant == 0 || _pcm_giant == 1)) \ 521 panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 522 __func__, __LINE__); \ 523 if ((x)->flags & SD_F_MPSAFE) { \ 524 if (_pcm_giant == 1) \ 525 panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 526 __func__, __LINE__); \ 527 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \ 528 device_printf((x)->dev, \ 529 "%s(%d): [GIANT EXIT] Giant owned!\n", \ 530 __func__, __LINE__); \ 531 } \ 532 if (_pcm_giant != 0) { \ 533 if (mtx_owned(&Giant) == 0) \ 534 panic("%s(%d): [GIANT EXIT] Giant not owned!", \ 535 __func__, __LINE__); \ 536 _pcm_giant = 0; \ 537 mtx_unlock(&Giant); \ 538 } \ 539 } while (0) 540 #else /* SND_DIAGNOSTIC */ 541 #define PCM_WAIT(x) do { \ 542 PCM_LOCKASSERT(x); \ 543 while ((x)->flags & SD_F_BUSY) \ 544 cv_wait(&(x)->cv, (x)->lock); \ 545 } while (0) 546 547 #define PCM_ACQUIRE(x) do { \ 548 PCM_LOCKASSERT(x); \ 549 KASSERT(!((x)->flags & SD_F_BUSY), \ 550 ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \ 551 __func__, __LINE__)); \ 552 (x)->flags |= SD_F_BUSY; \ 553 } while (0) 554 555 #define PCM_RELEASE(x) do { \ 556 PCM_LOCKASSERT(x); \ 557 KASSERT((x)->flags & SD_F_BUSY, \ 558 ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \ 559 __func__, __LINE__)); \ 560 (x)->flags &= ~SD_F_BUSY; \ 561 if ((x)->cv.cv_waiters != 0) \ 562 cv_broadcast(&(x)->cv); \ 563 } while (0) 564 565 /* Quick version, for shorter path. */ 566 #define PCM_ACQUIRE_QUICK(x) do { \ 567 PCM_UNLOCKASSERT(x); \ 568 PCM_LOCK(x); \ 569 PCM_WAIT(x); \ 570 PCM_ACQUIRE(x); \ 571 PCM_UNLOCK(x); \ 572 } while (0) 573 574 #define PCM_RELEASE_QUICK(x) do { \ 575 PCM_UNLOCKASSERT(x); \ 576 PCM_LOCK(x); \ 577 PCM_RELEASE(x); \ 578 PCM_UNLOCK(x); \ 579 } while (0) 580 581 #define PCM_BUSYASSERT(x) KASSERT(x != NULL && \ 582 ((x)->flags & SD_F_BUSY), \ 583 ("%s(%d): [PCM BUSYASSERT] " \ 584 "Failed, snddev_info=%p", \ 585 __func__, __LINE__, x)) 586 587 #define PCM_GIANT_ENTER(x) do { \ 588 int _pcm_giant = 0; \ 589 PCM_UNLOCKASSERT(x); \ 590 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \ 591 do { \ 592 mtx_lock(&Giant); \ 593 _pcm_giant = 1; \ 594 } while (0) 595 596 #define PCM_GIANT_EXIT(x) do { \ 597 PCM_UNLOCKASSERT(x); \ 598 KASSERT(_pcm_giant == 0 || _pcm_giant == 1, \ 599 ("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \ 600 __func__, __LINE__)); \ 601 KASSERT(!((x)->flags & SD_F_MPSAFE) || \ 602 (((x)->flags & SD_F_MPSAFE) && _pcm_giant == 0), \ 603 ("%s(%d): [GIANT EXIT] MPSAFE Giant?", \ 604 __func__, __LINE__)); \ 605 if (_pcm_giant != 0) { \ 606 mtx_assert(&Giant, MA_OWNED); \ 607 _pcm_giant = 0; \ 608 mtx_unlock(&Giant); \ 609 } \ 610 } while (0) 611 #endif /* !SND_DIAGNOSTIC */ 612 613 #define PCM_GIANT_LEAVE(x) \ 614 PCM_GIANT_EXIT(x); \ 615 } while (0) 616 617 #ifdef KLD_MODULE 618 #define PCM_KLDSTRING(a) ("kld " # a) 619 #else 620 #define PCM_KLDSTRING(a) "" 621 #endif 622 623 #endif /* _KERNEL */ 624 625 #endif /* _OS_H_ */ 626