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: releng/10.3/sys/dev/sound/pcm/sound.h 283950 2015-06-03 15:32:43Z hselasky $
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/selinfo.h>
46 #include <sys/proc.h>
47 #include <sys/kernel.h> /* for DATA_SET */
48 #include <sys/module.h>
49 #include <sys/conf.h>
50 #include <sys/file.h>
51 #include <sys/uio.h>
52 #include <sys/syslog.h>
53 #include <sys/errno.h>
54 #include <sys/malloc.h>
55 #include <sys/bus.h>
56 #if __FreeBSD_version < 500000
57 #include <sys/buf.h>
58 #endif
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 #if __FreeBSD_version >= 800062
124 #define PCMMINOR(x) (x)
125 #else
126 #define PCMMINOR(x) unit2minor(x)
127 #endif
128
129 /*
130 * By design, limit possible channels for each direction.
131 */
132 #define SND_MAXHWCHAN 256
133 #define SND_MAXVCHANS SND_MAXHWCHAN
134
135 #define SD_F_SIMPLEX 0x00000001
136 #define SD_F_AUTOVCHAN 0x00000002
137 #define SD_F_SOFTPCMVOL 0x00000004
138 /*
139 * Obsolete due to better matrixing
140 */
141 #if 0
142 #define SD_F_PSWAPLR 0x00000008
143 #define SD_F_RSWAPLR 0x00000010
144 #endif
145 #define SD_F_DYING 0x00000008
146 #define SD_F_SUICIDE 0x00000010
147 #define SD_F_BUSY 0x00000020
148 #define SD_F_MPSAFE 0x00000040
149 #define SD_F_REGISTERED 0x00000080
150 #define SD_F_BITPERFECT 0x00000100
151 #define SD_F_VPC 0x00000200 /* volume-per-channel */
152 #define SD_F_EQ 0x00000400 /* EQ */
153 #define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */
154 #define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */
155 #define SD_F_EQ_PC 0x00002000 /* EQ per-channel */
156
157 #define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED)
158 #define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \
159 SD_F_EQ_BYPASSED | SD_F_EQ_PC)
160
161 #define SD_F_PRIO_RD 0x10000000
162 #define SD_F_PRIO_WR 0x20000000
163 #define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR)
164 #define SD_F_DIR_SET 0x40000000
165 #define SD_F_TRANSIENT 0xf0000000
166
167 #define SD_F_BITS "\020" \
168 "\001SIMPLEX" \
169 "\002AUTOVCHAN" \
170 "\003SOFTPCMVOL" \
171 "\004DYING" \
172 "\005SUICIDE" \
173 "\006BUSY" \
174 "\007MPSAFE" \
175 "\010REGISTERED" \
176 "\011BITPERFECT" \
177 "\012VPC" \
178 "\013EQ" \
179 "\014EQ_ENABLED" \
180 "\015EQ_BYPASSED" \
181 "\016EQ_PC" \
182 "\035PRIO_RD" \
183 "\036PRIO_WR" \
184 "\037DIR_SET"
185
186 #define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \
187 !((x)->flags & SD_F_DYING))
188 #define PCM_REGISTERED(x) (PCM_ALIVE(x) && \
189 ((x)->flags & SD_F_REGISTERED))
190
191 /* many variables should be reduced to a range. Here define a macro */
192 #define RANGE(var, low, high) (var) = \
193 (((var)<(low))? (low) : ((var)>(high))? (high) : (var))
194 #define DSP_BUFFSIZE (8192)
195
196 /* make figuring out what a format is easier. got AFMT_STEREO already */
197 #define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE)
198 #define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE)
199 #define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE)
200 #define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW)
201 #define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8)
202 #define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \
203 AFMT_S16_LE | AFMT_S16_BE | AFMT_S8)
204 #define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \
205 AFMT_S16_BE | AFMT_U16_BE)
206
207 #define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \
208 AFMT_32BIT)
209
210 /* Supported vchan mixing formats */
211 #define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711)
212
213 #define AFMT_PASSTHROUGH AFMT_AC3
214 #define AFMT_PASSTHROUGH_RATE 48000
215 #define AFMT_PASSTHROUGH_CHANNEL 2
216 #define AFMT_PASSTHROUGH_EXTCHANNEL 0
217
218 /*
219 * We're simply using unused, contiguous bits from various AFMT_ definitions.
220 * ~(0xb00ff7ff)
221 */
222 #define AFMT_ENCODING_MASK 0xf00fffff
223 #define AFMT_CHANNEL_MASK 0x07f00000
224 #define AFMT_CHANNEL_SHIFT 20
225 #define AFMT_CHANNEL_MAX 0x7f
226 #define AFMT_EXTCHANNEL_MASK 0x08000000
227 #define AFMT_EXTCHANNEL_SHIFT 27
228 #define AFMT_EXTCHANNEL_MAX 1
229
230 #define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK)
231
232 #define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \
233 AFMT_EXTCHANNEL_SHIFT)
234
235 #define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \
236 AFMT_CHANNEL_SHIFT)
237
238 #define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \
239 (((v) & AFMT_24BIT) ? 24 : \
240 ((((v) & AFMT_16BIT) || \
241 ((v) & AFMT_PASSTHROUGH)) ? 16 : 8)))
242
243 #define AFMT_BPS(v) (AFMT_BIT(v) >> 3)
244 #define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v))
245
246 #define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \
247 (((c) << AFMT_CHANNEL_SHIFT) & \
248 AFMT_CHANNEL_MASK) | \
249 (((e) << AFMT_EXTCHANNEL_SHIFT) & \
250 AFMT_EXTCHANNEL_MASK))
251
252 #define AFMT_U8_NE AFMT_U8
253 #define AFMT_S8_NE AFMT_S8
254
255 #define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE)
256
257 #define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \
258 AFMT_U24_NE | AFMT_U32_NE)
259
260 /*
261 * Minor numbers for the sound driver.
262 *
263 * Unfortunately Creative called the codec chip of SB as a DSP. For this
264 * reason the /dev/dsp is reserved for digitized audio use. There is a
265 * device for true DSP processors but it will be called something else.
266 * In v3.0 it's /dev/sndproc but this could be a temporary solution.
267 */
268
269 #define SND_DEV_CTL 0 /* Control port /dev/mixer */
270 #define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */
271 #define SND_DEV_MIDIN 2 /* Raw midi access */
272 #define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */
273 #define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */
274 #define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */
275 #define SND_DEV_STATUS 6 /* /dev/sndstat */
276 /* #7 not in use now. */
277 #define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */
278 #define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */
279 #define SND_DEV_PSS SND_DEV_SNDPROC /* ? */
280 #define SND_DEV_NORESET 10
281
282 #define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */
283 #define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */
284 #define SND_DEV_DSPHW_REC 13 /* specific record channel */
285 #define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */
286
287 #define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */
288
289 /*
290 * OSSv4 compatible device. For now, it serve no purpose and
291 * the cloning itself will forward the request to ordinary /dev/dsp
292 * instead.
293 */
294 #define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */
295 #define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */
296 #define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */
297 #define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */
298 #define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */
299
300 #define SND_DEV_LAST SND_DEV_DSP_SPDIFIN
301 #define SND_DEV_MAX PCMMAXDEV
302
303 #define DSP_DEFAULT_SPEED 8000
304
305 #define ON 1
306 #define OFF 0
307
308 extern int pcm_veto_load;
309 extern int snd_unit;
310 extern int snd_maxautovchans;
311 extern int snd_verbose;
312 extern devclass_t pcm_devclass;
313 extern struct unrhdr *pcmsg_unrhdr;
314
315 /*
316 * some macros for debugging purposes
317 * DDB/DEB to enable/disable debugging stuff
318 * BVDDB to enable debugging when bootverbose
319 */
320 #define BVDDB(x) if (bootverbose) x
321
322 #ifndef DEB
323 #define DEB(x)
324 #endif
325
326 SYSCTL_DECL(_hw_snd);
327
328 int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num);
329 int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction,
330 pid_t pid, char *comm, int devunit);
331 int pcm_chnrelease(struct pcm_channel *c);
332 int pcm_chnref(struct pcm_channel *c, int ref);
333 int pcm_inprog(struct snddev_info *d, int delta);
334
335 struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo);
336 int pcm_chn_destroy(struct pcm_channel *ch);
337 int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch);
338 int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch);
339
340 int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo);
341 unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz);
342 int pcm_register(device_t dev, void *devinfo, int numplay, int numrec);
343 int pcm_unregister(device_t dev);
344 int pcm_setstatus(device_t dev, char *str);
345 u_int32_t pcm_getflags(device_t dev);
346 void pcm_setflags(device_t dev, u_int32_t val);
347 void *pcm_getdevinfo(device_t dev);
348
349
350 int snd_setup_intr(device_t dev, struct resource *res, int flags,
351 driver_intr_t hand, void *param, void **cookiep);
352
353 void *snd_mtxcreate(const char *desc, const char *type);
354 void snd_mtxfree(void *m);
355 void snd_mtxassert(void *m);
356 #define snd_mtxlock(m) mtx_lock(m)
357 #define snd_mtxunlock(m) mtx_unlock(m)
358
359 typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose);
360 int sndstat_acquire(struct thread *td);
361 int sndstat_release(struct thread *td);
362 int sndstat_register(device_t dev, char *str, sndstat_handler handler);
363 int sndstat_registerfile(char *str);
364 int sndstat_unregister(device_t dev);
365 int sndstat_unregisterfile(char *str);
366
367 #define SND_DECLARE_FILE(version) \
368 _SND_DECLARE_FILE(__LINE__, version)
369
370 #define _SND_DECLARE_FILE(uniq, version) \
371 __SND_DECLARE_FILE(uniq, version)
372
373 #define __SND_DECLARE_FILE(uniq, version) \
374 static char sndstat_vinfo[] = version; \
375 SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \
376 SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo);
377
378 /* usage of flags in device config entry (config file) */
379 #define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */
380 #define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */
381
382 /* ought to be made obsolete but still used by mss */
383 #define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */
384 #define DV_F_DEV_SHIFT 8 /* force device type/class */
385
386 /*
387 * this is rather kludgey- we need to duplicate these struct def'ns from sound.c
388 * so that the macro versions of pcm_{,un}lock can dereference them.
389 * we also have to do this now makedev() has gone away.
390 */
391
392 struct snddev_info {
393 struct {
394 struct {
395 SLIST_HEAD(, pcm_channel) head;
396 struct {
397 SLIST_HEAD(, pcm_channel) head;
398 } busy;
399 struct {
400 SLIST_HEAD(, pcm_channel) head;
401 } opened;
402 } pcm;
403 } channels;
404 TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool;
405 struct snd_clone *clones;
406 unsigned devcount, playcount, reccount, pvchancount, rvchancount ;
407 unsigned flags;
408 int inprog;
409 unsigned int bufsz;
410 void *devinfo;
411 device_t dev;
412 char status[SND_STATUSLEN];
413 struct mtx *lock;
414 struct cdev *mixer_dev;
415 uint32_t pvchanrate, pvchanformat;
416 uint32_t rvchanrate, rvchanformat;
417 int32_t eqpreamp;
418 struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx;
419 struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree;
420 struct cv cv;
421 };
422
423 void sound_oss_sysinfo(oss_sysinfo *);
424 int sound_oss_card_info(oss_card_info *);
425
426 #define PCM_LOCKOWNED(d) mtx_owned((d)->lock)
427 #define PCM_LOCK(d) mtx_lock((d)->lock)
428 #define PCM_UNLOCK(d) mtx_unlock((d)->lock)
429 #define PCM_TRYLOCK(d) mtx_trylock((d)->lock)
430 #define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED)
431 #define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED)
432
433 /*
434 * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these
435 * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you!
436 */
437 #ifdef SND_DIAGNOSTIC
438 #define PCM_WAIT(x) do { \
439 if (!PCM_LOCKOWNED(x)) \
440 panic("%s(%d): [PCM WAIT] Mutex not owned!", \
441 __func__, __LINE__); \
442 while ((x)->flags & SD_F_BUSY) { \
443 if (snd_verbose > 3) \
444 device_printf((x)->dev, \
445 "%s(%d): [PCM WAIT] calling cv_wait().\n", \
446 __func__, __LINE__); \
447 cv_wait(&(x)->cv, (x)->lock); \
448 } \
449 } while (0)
450
451 #define PCM_ACQUIRE(x) do { \
452 if (!PCM_LOCKOWNED(x)) \
453 panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \
454 __func__, __LINE__); \
455 if ((x)->flags & SD_F_BUSY) \
456 panic("%s(%d): [PCM ACQUIRE] " \
457 "Trying to acquire BUSY cv!", __func__, __LINE__); \
458 (x)->flags |= SD_F_BUSY; \
459 } while (0)
460
461 #define PCM_RELEASE(x) do { \
462 if (!PCM_LOCKOWNED(x)) \
463 panic("%s(%d): [PCM RELEASE] Mutex not owned!", \
464 __func__, __LINE__); \
465 if ((x)->flags & SD_F_BUSY) { \
466 (x)->flags &= ~SD_F_BUSY; \
467 if ((x)->cv.cv_waiters != 0) { \
468 if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \
469 device_printf((x)->dev, \
470 "%s(%d): [PCM RELEASE] " \
471 "cv_waiters=%d > 1!\n", \
472 __func__, __LINE__, \
473 (x)->cv.cv_waiters); \
474 cv_broadcast(&(x)->cv); \
475 } \
476 } else \
477 panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \
478 __func__, __LINE__); \
479 } while (0)
480
481 /* Quick version, for shorter path. */
482 #define PCM_ACQUIRE_QUICK(x) do { \
483 if (PCM_LOCKOWNED(x)) \
484 panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \
485 __func__, __LINE__); \
486 PCM_LOCK(x); \
487 PCM_WAIT(x); \
488 PCM_ACQUIRE(x); \
489 PCM_UNLOCK(x); \
490 } while (0)
491
492 #define PCM_RELEASE_QUICK(x) do { \
493 if (PCM_LOCKOWNED(x)) \
494 panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \
495 __func__, __LINE__); \
496 PCM_LOCK(x); \
497 PCM_RELEASE(x); \
498 PCM_UNLOCK(x); \
499 } while (0)
500
501 #define PCM_BUSYASSERT(x) do { \
502 if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \
503 panic("%s(%d): [PCM BUSYASSERT] " \
504 "Failed, snddev_info=%p", __func__, __LINE__, x); \
505 } while (0)
506
507 #define PCM_GIANT_ENTER(x) do { \
508 int _pcm_giant = 0; \
509 if (PCM_LOCKOWNED(x)) \
510 panic("%s(%d): [GIANT ENTER] PCM lock owned!", \
511 __func__, __LINE__); \
512 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \
513 device_printf((x)->dev, \
514 "%s(%d): [GIANT ENTER] Giant owned!\n", \
515 __func__, __LINE__); \
516 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \
517 do { \
518 mtx_lock(&Giant); \
519 _pcm_giant = 1; \
520 } while (0)
521
522 #define PCM_GIANT_EXIT(x) do { \
523 if (PCM_LOCKOWNED(x)) \
524 panic("%s(%d): [GIANT EXIT] PCM lock owned!", \
525 __func__, __LINE__); \
526 if (!(_pcm_giant == 0 || _pcm_giant == 1)) \
527 panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \
528 __func__, __LINE__); \
529 if ((x)->flags & SD_F_MPSAFE) { \
530 if (_pcm_giant == 1) \
531 panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \
532 __func__, __LINE__); \
533 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \
534 device_printf((x)->dev, \
535 "%s(%d): [GIANT EXIT] Giant owned!\n", \
536 __func__, __LINE__); \
537 } \
538 if (_pcm_giant != 0) { \
539 if (mtx_owned(&Giant) == 0) \
540 panic("%s(%d): [GIANT EXIT] Giant not owned!", \
541 __func__, __LINE__); \
542 _pcm_giant = 0; \
543 mtx_unlock(&Giant); \
544 } \
545 } while (0)
546 #else /* SND_DIAGNOSTIC */
547 #define PCM_WAIT(x) do { \
548 PCM_LOCKASSERT(x); \
549 while ((x)->flags & SD_F_BUSY) \
550 cv_wait(&(x)->cv, (x)->lock); \
551 } while (0)
552
553 #define PCM_ACQUIRE(x) do { \
554 PCM_LOCKASSERT(x); \
555 KASSERT(!((x)->flags & SD_F_BUSY), \
556 ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \
557 __func__, __LINE__)); \
558 (x)->flags |= SD_F_BUSY; \
559 } while (0)
560
561 #define PCM_RELEASE(x) do { \
562 PCM_LOCKASSERT(x); \
563 KASSERT((x)->flags & SD_F_BUSY, \
564 ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \
565 __func__, __LINE__)); \
566 (x)->flags &= ~SD_F_BUSY; \
567 if ((x)->cv.cv_waiters != 0) \
568 cv_broadcast(&(x)->cv); \
569 } while (0)
570
571 /* Quick version, for shorter path. */
572 #define PCM_ACQUIRE_QUICK(x) do { \
573 PCM_UNLOCKASSERT(x); \
574 PCM_LOCK(x); \
575 PCM_WAIT(x); \
576 PCM_ACQUIRE(x); \
577 PCM_UNLOCK(x); \
578 } while (0)
579
580 #define PCM_RELEASE_QUICK(x) do { \
581 PCM_UNLOCKASSERT(x); \
582 PCM_LOCK(x); \
583 PCM_RELEASE(x); \
584 PCM_UNLOCK(x); \
585 } while (0)
586
587 #define PCM_BUSYASSERT(x) KASSERT(x != NULL && \
588 ((x)->flags & SD_F_BUSY), \
589 ("%s(%d): [PCM BUSYASSERT] " \
590 "Failed, snddev_info=%p", \
591 __func__, __LINE__, x))
592
593 #define PCM_GIANT_ENTER(x) do { \
594 int _pcm_giant = 0; \
595 PCM_UNLOCKASSERT(x); \
596 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \
597 do { \
598 mtx_lock(&Giant); \
599 _pcm_giant = 1; \
600 } while (0)
601
602 #define PCM_GIANT_EXIT(x) do { \
603 PCM_UNLOCKASSERT(x); \
604 KASSERT(_pcm_giant == 0 || _pcm_giant == 1, \
605 ("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \
606 __func__, __LINE__)); \
607 KASSERT(!((x)->flags & SD_F_MPSAFE) || \
608 (((x)->flags & SD_F_MPSAFE) && _pcm_giant == 0), \
609 ("%s(%d): [GIANT EXIT] MPSAFE Giant?", \
610 __func__, __LINE__)); \
611 if (_pcm_giant != 0) { \
612 mtx_assert(&Giant, MA_OWNED); \
613 _pcm_giant = 0; \
614 mtx_unlock(&Giant); \
615 } \
616 } while (0)
617 #endif /* !SND_DIAGNOSTIC */
618
619 #define PCM_GIANT_LEAVE(x) \
620 PCM_GIANT_EXIT(x); \
621 } while (0)
622
623 #ifdef KLD_MODULE
624 #define PCM_KLDSTRING(a) ("kld " # a)
625 #else
626 #define PCM_KLDSTRING(a) ""
627 #endif
628
629 #endif /* _KERNEL */
630
631 #endif /* _OS_H_ */
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