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 * $FreeBSD$
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 #include <machine/resource.h>
57 #include <machine/bus.h>
58 #include <sys/rman.h>
59 #include <sys/limits.h>
60 #include <sys/mman.h>
61 #include <sys/poll.h>
62 #include <sys/sbuf.h>
63 #include <sys/soundcard.h>
64 #include <sys/sysctl.h>
65 #include <sys/kobj.h>
66 #include <vm/vm.h>
67 #include <vm/pmap.h>
68
69 #include <sys/lock.h>
70 #include <sys/mutex.h>
71 #include <sys/condvar.h>
72
73 #ifndef KOBJMETHOD_END
74 #define KOBJMETHOD_END { NULL, NULL }
75 #endif
76
77 struct pcm_channel;
78 struct pcm_feeder;
79 struct snd_dbuf;
80 struct snd_mixer;
81
82 #include <dev/sound/pcm/buffer.h>
83 #include <dev/sound/pcm/matrix.h>
84 #include <dev/sound/pcm/matrix_map.h>
85 #include <dev/sound/pcm/channel.h>
86 #include <dev/sound/pcm/feeder.h>
87 #include <dev/sound/pcm/mixer.h>
88 #include <dev/sound/pcm/dsp.h>
89 #include <dev/sound/clone.h>
90 #include <dev/sound/unit.h>
91
92 #define PCM_SOFTC_SIZE (sizeof(struct snddev_info))
93
94 #define SND_STATUSLEN 64
95
96 #define SOUND_MODVER 5
97
98 #define SOUND_MINVER SOUND_MODVER
99 #define SOUND_PREFVER SOUND_MODVER
100 #define SOUND_MAXVER SOUND_MODVER
101
102 /*
103 * We're abusing the fact that MAXMINOR still have enough room
104 * for our bit twiddling and nobody ever need 512 unique soundcards,
105 * 32 unique device types and 1024 unique cloneable devices for the
106 * next 100 years...
107 */
108
109 #define PCMMAXUNIT (snd_max_u())
110 #define PCMMAXDEV (snd_max_d())
111 #define PCMMAXCHAN (snd_max_c())
112
113 #define PCMMAXCLONE PCMMAXCHAN
114
115 #define PCMUNIT(x) (snd_unit2u(dev2unit(x)))
116 #define PCMDEV(x) (snd_unit2d(dev2unit(x)))
117 #define PCMCHAN(x) (snd_unit2c(dev2unit(x)))
118
119 /* XXX unit2minor compat */
120 #define PCMMINOR(x) (x)
121
122 /*
123 * By design, limit possible channels for each direction.
124 */
125 #define SND_MAXHWCHAN 256
126 #define SND_MAXVCHANS SND_MAXHWCHAN
127
128 #define SD_F_SIMPLEX 0x00000001
129 #define SD_F_AUTOVCHAN 0x00000002
130 #define SD_F_SOFTPCMVOL 0x00000004
131 #define SD_F_DYING 0x00000008
132 #define SD_F_DETACHING 0x00000010
133 #define SD_F_BUSY 0x00000020
134 #define SD_F_MPSAFE 0x00000040
135 #define SD_F_REGISTERED 0x00000080
136 #define SD_F_BITPERFECT 0x00000100
137 #define SD_F_VPC 0x00000200 /* volume-per-channel */
138 #define SD_F_EQ 0x00000400 /* EQ */
139 #define SD_F_EQ_ENABLED 0x00000800 /* EQ enabled */
140 #define SD_F_EQ_BYPASSED 0x00001000 /* EQ bypassed */
141 #define SD_F_EQ_PC 0x00002000 /* EQ per-channel */
142
143 #define SD_F_EQ_DEFAULT (SD_F_EQ | SD_F_EQ_ENABLED)
144 #define SD_F_EQ_MASK (SD_F_EQ | SD_F_EQ_ENABLED | \
145 SD_F_EQ_BYPASSED | SD_F_EQ_PC)
146
147 #define SD_F_PRIO_RD 0x10000000
148 #define SD_F_PRIO_WR 0x20000000
149 #define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR)
150 #define SD_F_DIR_SET 0x40000000
151 #define SD_F_TRANSIENT 0xf0000000
152
153 #define SD_F_BITS "\020" \
154 "\001SIMPLEX" \
155 "\002AUTOVCHAN" \
156 "\003SOFTPCMVOL" \
157 "\004DYING" \
158 "\005DETACHING" \
159 "\006BUSY" \
160 "\007MPSAFE" \
161 "\010REGISTERED" \
162 "\011BITPERFECT" \
163 "\012VPC" \
164 "\013EQ" \
165 "\014EQ_ENABLED" \
166 "\015EQ_BYPASSED" \
167 "\016EQ_PC" \
168 "\035PRIO_RD" \
169 "\036PRIO_WR" \
170 "\037DIR_SET"
171
172 #define PCM_ALIVE(x) ((x) != NULL && (x)->lock != NULL && \
173 !((x)->flags & SD_F_DYING))
174 #define PCM_REGISTERED(x) (PCM_ALIVE(x) && \
175 ((x)->flags & SD_F_REGISTERED))
176
177 #define PCM_DETACHING(x) ((x)->flags & SD_F_DETACHING)
178
179 /* many variables should be reduced to a range. Here define a macro */
180 #define RANGE(var, low, high) (var) = \
181 (((var)<(low))? (low) : ((var)>(high))? (high) : (var))
182 #define DSP_BUFFSIZE (8192)
183
184 /* make figuring out what a format is easier. got AFMT_STEREO already */
185 #define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE)
186 #define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE)
187 #define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE)
188 #define AFMT_G711 (AFMT_MU_LAW | AFMT_A_LAW)
189 #define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8)
190 #define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \
191 AFMT_S16_LE | AFMT_S16_BE | AFMT_S8)
192 #define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \
193 AFMT_S16_BE | AFMT_U16_BE)
194
195 #define AFMT_CONVERTIBLE (AFMT_8BIT | AFMT_16BIT | AFMT_24BIT | \
196 AFMT_32BIT)
197
198 /* Supported vchan mixing formats */
199 #define AFMT_VCHAN (AFMT_CONVERTIBLE & ~AFMT_G711)
200
201 #define AFMT_PASSTHROUGH AFMT_AC3
202 #define AFMT_PASSTHROUGH_RATE 48000
203 #define AFMT_PASSTHROUGH_CHANNEL 2
204 #define AFMT_PASSTHROUGH_EXTCHANNEL 0
205
206 /*
207 * We're simply using unused, contiguous bits from various AFMT_ definitions.
208 * ~(0xb00ff7ff)
209 */
210 #define AFMT_ENCODING_MASK 0xf00fffff
211 #define AFMT_CHANNEL_MASK 0x07f00000
212 #define AFMT_CHANNEL_SHIFT 20
213 #define AFMT_CHANNEL_MAX 0x7f
214 #define AFMT_EXTCHANNEL_MASK 0x08000000
215 #define AFMT_EXTCHANNEL_SHIFT 27
216 #define AFMT_EXTCHANNEL_MAX 1
217
218 #define AFMT_ENCODING(v) ((v) & AFMT_ENCODING_MASK)
219
220 #define AFMT_EXTCHANNEL(v) (((v) & AFMT_EXTCHANNEL_MASK) >> \
221 AFMT_EXTCHANNEL_SHIFT)
222
223 #define AFMT_CHANNEL(v) (((v) & AFMT_CHANNEL_MASK) >> \
224 AFMT_CHANNEL_SHIFT)
225
226 #define AFMT_BIT(v) (((v) & AFMT_32BIT) ? 32 : \
227 (((v) & AFMT_24BIT) ? 24 : \
228 ((((v) & AFMT_16BIT) || \
229 ((v) & AFMT_PASSTHROUGH)) ? 16 : 8)))
230
231 #define AFMT_BPS(v) (AFMT_BIT(v) >> 3)
232 #define AFMT_ALIGN(v) (AFMT_BPS(v) * AFMT_CHANNEL(v))
233
234 #define SND_FORMAT(f, c, e) (AFMT_ENCODING(f) | \
235 (((c) << AFMT_CHANNEL_SHIFT) & \
236 AFMT_CHANNEL_MASK) | \
237 (((e) << AFMT_EXTCHANNEL_SHIFT) & \
238 AFMT_EXTCHANNEL_MASK))
239
240 #define AFMT_U8_NE AFMT_U8
241 #define AFMT_S8_NE AFMT_S8
242
243 #define AFMT_SIGNED_NE (AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE)
244
245 #define AFMT_NE (AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE | \
246 AFMT_U24_NE | AFMT_U32_NE)
247
248 /*
249 * Minor numbers for the sound driver.
250 *
251 * Unfortunately Creative called the codec chip of SB as a DSP. For this
252 * reason the /dev/dsp is reserved for digitized audio use. There is a
253 * device for true DSP processors but it will be called something else.
254 * In v3.0 it's /dev/sndproc but this could be a temporary solution.
255 */
256
257 #define SND_DEV_CTL 0 /* Control port /dev/mixer */
258 #define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */
259 #define SND_DEV_MIDIN 2 /* Raw midi access */
260 #define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */
261 #define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */
262 #define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */
263 #define SND_DEV_STATUS 6 /* /dev/sndstat */
264 /* #7 not in use now. */
265 #define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */
266 #define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */
267 #define SND_DEV_PSS SND_DEV_SNDPROC /* ? */
268 #define SND_DEV_NORESET 10
269
270 #define SND_DEV_DSPHW_PLAY 11 /* specific playback channel */
271 #define SND_DEV_DSPHW_VPLAY 12 /* specific virtual playback channel */
272 #define SND_DEV_DSPHW_REC 13 /* specific record channel */
273 #define SND_DEV_DSPHW_VREC 14 /* specific virtual record channel */
274
275 #define SND_DEV_DSPHW_CD 15 /* s16le/stereo 44100Hz CD */
276
277 /*
278 * OSSv4 compatible device. For now, it serve no purpose and
279 * the cloning itself will forward the request to ordinary /dev/dsp
280 * instead.
281 */
282 #define SND_DEV_DSP_MMAP 16 /* /dev/dsp_mmap */
283 #define SND_DEV_DSP_AC3 17 /* /dev/dsp_ac3 */
284 #define SND_DEV_DSP_MULTICH 18 /* /dev/dsp_multich */
285 #define SND_DEV_DSP_SPDIFOUT 19 /* /dev/dsp_spdifout */
286 #define SND_DEV_DSP_SPDIFIN 20 /* /dev/dsp_spdifin */
287
288 #define SND_DEV_LAST SND_DEV_DSP_SPDIFIN
289 #define SND_DEV_MAX PCMMAXDEV
290
291 #define DSP_DEFAULT_SPEED 8000
292
293 #define ON 1
294 #define OFF 0
295
296 extern int pcm_veto_load;
297 extern int snd_unit;
298 extern int snd_maxautovchans;
299 extern int snd_verbose;
300 extern devclass_t pcm_devclass;
301 extern struct unrhdr *pcmsg_unrhdr;
302
303 /*
304 * some macros for debugging purposes
305 * DDB/DEB to enable/disable debugging stuff
306 * BVDDB to enable debugging when bootverbose
307 */
308 #define BVDDB(x) if (bootverbose) x
309
310 #ifndef DEB
311 #define DEB(x)
312 #endif
313
314 SYSCTL_DECL(_hw_snd);
315
316 int pcm_setvchans(struct snddev_info *d, int direction, int newcnt, int num);
317 int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction,
318 pid_t pid, char *comm, int devunit);
319 int pcm_chnrelease(struct pcm_channel *c);
320 int pcm_chnref(struct pcm_channel *c, int ref);
321 int pcm_inprog(struct snddev_info *d, int delta);
322
323 struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, int num, void *devinfo);
324 int pcm_chn_destroy(struct pcm_channel *ch);
325 int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch);
326 int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch);
327
328 int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo);
329 unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz);
330 int pcm_register(device_t dev, void *devinfo, int numplay, int numrec);
331 int pcm_unregister(device_t dev);
332 int pcm_setstatus(device_t dev, char *str);
333 u_int32_t pcm_getflags(device_t dev);
334 void pcm_setflags(device_t dev, u_int32_t val);
335 void *pcm_getdevinfo(device_t dev);
336
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 int sndstat_registerfile(char *str);
350 int sndstat_unregister(device_t dev);
351 int sndstat_unregisterfile(char *str);
352
353 #define SND_DECLARE_FILE(version) \
354 _SND_DECLARE_FILE(__LINE__, version)
355
356 #define _SND_DECLARE_FILE(uniq, version) \
357 __SND_DECLARE_FILE(uniq, version)
358
359 #define __SND_DECLARE_FILE(uniq, version) \
360 static char sndstat_vinfo[] = version; \
361 SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \
362 SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo);
363
364 /* usage of flags in device config entry (config file) */
365 #define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */
366 #define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */
367
368 /* ought to be made obsolete but still used by mss */
369 #define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */
370 #define DV_F_DEV_SHIFT 8 /* force device type/class */
371
372 /*
373 * this is rather kludgey- we need to duplicate these struct def'ns from sound.c
374 * so that the macro versions of pcm_{,un}lock can dereference them.
375 * we also have to do this now makedev() has gone away.
376 */
377
378 struct snddev_info {
379 struct {
380 struct {
381 SLIST_HEAD(, pcm_channel) head;
382 struct {
383 SLIST_HEAD(, pcm_channel) head;
384 } busy;
385 struct {
386 SLIST_HEAD(, pcm_channel) head;
387 } opened;
388 } pcm;
389 } channels;
390 TAILQ_HEAD(dsp_cdevinfo_linkhead, dsp_cdevinfo) dsp_cdevinfo_pool;
391 struct snd_clone *clones;
392 unsigned devcount, playcount, reccount, pvchancount, rvchancount ;
393 unsigned flags;
394 int inprog;
395 unsigned int bufsz;
396 void *devinfo;
397 device_t dev;
398 char status[SND_STATUSLEN];
399 struct mtx *lock;
400 struct cdev *mixer_dev;
401 uint32_t pvchanrate, pvchanformat;
402 uint32_t rvchanrate, rvchanformat;
403 int32_t eqpreamp;
404 struct sysctl_ctx_list play_sysctl_ctx, rec_sysctl_ctx;
405 struct sysctl_oid *play_sysctl_tree, *rec_sysctl_tree;
406 struct cv cv;
407 };
408
409 void sound_oss_sysinfo(oss_sysinfo *);
410 int sound_oss_card_info(oss_card_info *);
411
412 #define PCM_LOCKOWNED(d) mtx_owned((d)->lock)
413 #define PCM_LOCK(d) mtx_lock((d)->lock)
414 #define PCM_UNLOCK(d) mtx_unlock((d)->lock)
415 #define PCM_TRYLOCK(d) mtx_trylock((d)->lock)
416 #define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED)
417 #define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED)
418
419 /*
420 * For PCM_[WAIT | ACQUIRE | RELEASE], be sure to surround these
421 * with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you!
422 */
423 #ifdef SND_DIAGNOSTIC
424 #define PCM_WAIT(x) do { \
425 if (!PCM_LOCKOWNED(x)) \
426 panic("%s(%d): [PCM WAIT] Mutex not owned!", \
427 __func__, __LINE__); \
428 while ((x)->flags & SD_F_BUSY) { \
429 if (snd_verbose > 3) \
430 device_printf((x)->dev, \
431 "%s(%d): [PCM WAIT] calling cv_wait().\n", \
432 __func__, __LINE__); \
433 cv_wait(&(x)->cv, (x)->lock); \
434 } \
435 } while (0)
436
437 #define PCM_ACQUIRE(x) do { \
438 if (!PCM_LOCKOWNED(x)) \
439 panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \
440 __func__, __LINE__); \
441 if ((x)->flags & SD_F_BUSY) \
442 panic("%s(%d): [PCM ACQUIRE] " \
443 "Trying to acquire BUSY cv!", __func__, __LINE__); \
444 (x)->flags |= SD_F_BUSY; \
445 } while (0)
446
447 #define PCM_RELEASE(x) do { \
448 if (!PCM_LOCKOWNED(x)) \
449 panic("%s(%d): [PCM RELEASE] Mutex not owned!", \
450 __func__, __LINE__); \
451 if ((x)->flags & SD_F_BUSY) { \
452 (x)->flags &= ~SD_F_BUSY; \
453 if ((x)->cv.cv_waiters != 0) { \
454 if ((x)->cv.cv_waiters > 1 && snd_verbose > 3) \
455 device_printf((x)->dev, \
456 "%s(%d): [PCM RELEASE] " \
457 "cv_waiters=%d > 1!\n", \
458 __func__, __LINE__, \
459 (x)->cv.cv_waiters); \
460 cv_broadcast(&(x)->cv); \
461 } \
462 } else \
463 panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \
464 __func__, __LINE__); \
465 } while (0)
466
467 /* Quick version, for shorter path. */
468 #define PCM_ACQUIRE_QUICK(x) do { \
469 if (PCM_LOCKOWNED(x)) \
470 panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \
471 __func__, __LINE__); \
472 PCM_LOCK(x); \
473 PCM_WAIT(x); \
474 PCM_ACQUIRE(x); \
475 PCM_UNLOCK(x); \
476 } while (0)
477
478 #define PCM_RELEASE_QUICK(x) do { \
479 if (PCM_LOCKOWNED(x)) \
480 panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \
481 __func__, __LINE__); \
482 PCM_LOCK(x); \
483 PCM_RELEASE(x); \
484 PCM_UNLOCK(x); \
485 } while (0)
486
487 #define PCM_BUSYASSERT(x) do { \
488 if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \
489 panic("%s(%d): [PCM BUSYASSERT] " \
490 "Failed, snddev_info=%p", __func__, __LINE__, x); \
491 } while (0)
492
493 #define PCM_GIANT_ENTER(x) do { \
494 int _pcm_giant = 0; \
495 if (PCM_LOCKOWNED(x)) \
496 panic("%s(%d): [GIANT ENTER] PCM lock owned!", \
497 __func__, __LINE__); \
498 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \
499 device_printf((x)->dev, \
500 "%s(%d): [GIANT ENTER] Giant owned!\n", \
501 __func__, __LINE__); \
502 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \
503 do { \
504 mtx_lock(&Giant); \
505 _pcm_giant = 1; \
506 } while (0)
507
508 #define PCM_GIANT_EXIT(x) do { \
509 if (PCM_LOCKOWNED(x)) \
510 panic("%s(%d): [GIANT EXIT] PCM lock owned!", \
511 __func__, __LINE__); \
512 if (!(_pcm_giant == 0 || _pcm_giant == 1)) \
513 panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \
514 __func__, __LINE__); \
515 if ((x)->flags & SD_F_MPSAFE) { \
516 if (_pcm_giant == 1) \
517 panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \
518 __func__, __LINE__); \
519 if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \
520 device_printf((x)->dev, \
521 "%s(%d): [GIANT EXIT] Giant owned!\n", \
522 __func__, __LINE__); \
523 } \
524 if (_pcm_giant != 0) { \
525 if (mtx_owned(&Giant) == 0) \
526 panic("%s(%d): [GIANT EXIT] Giant not owned!", \
527 __func__, __LINE__); \
528 _pcm_giant = 0; \
529 mtx_unlock(&Giant); \
530 } \
531 } while (0)
532 #else /* SND_DIAGNOSTIC */
533 #define PCM_WAIT(x) do { \
534 PCM_LOCKASSERT(x); \
535 while ((x)->flags & SD_F_BUSY) \
536 cv_wait(&(x)->cv, (x)->lock); \
537 } while (0)
538
539 #define PCM_ACQUIRE(x) do { \
540 PCM_LOCKASSERT(x); \
541 KASSERT(!((x)->flags & SD_F_BUSY), \
542 ("%s(%d): [PCM ACQUIRE] Trying to acquire BUSY cv!", \
543 __func__, __LINE__)); \
544 (x)->flags |= SD_F_BUSY; \
545 } while (0)
546
547 #define PCM_RELEASE(x) do { \
548 PCM_LOCKASSERT(x); \
549 KASSERT((x)->flags & SD_F_BUSY, \
550 ("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \
551 __func__, __LINE__)); \
552 (x)->flags &= ~SD_F_BUSY; \
553 if ((x)->cv.cv_waiters != 0) \
554 cv_broadcast(&(x)->cv); \
555 } while (0)
556
557 /* Quick version, for shorter path. */
558 #define PCM_ACQUIRE_QUICK(x) do { \
559 PCM_UNLOCKASSERT(x); \
560 PCM_LOCK(x); \
561 PCM_WAIT(x); \
562 PCM_ACQUIRE(x); \
563 PCM_UNLOCK(x); \
564 } while (0)
565
566 #define PCM_RELEASE_QUICK(x) do { \
567 PCM_UNLOCKASSERT(x); \
568 PCM_LOCK(x); \
569 PCM_RELEASE(x); \
570 PCM_UNLOCK(x); \
571 } while (0)
572
573 #define PCM_BUSYASSERT(x) KASSERT(x != NULL && \
574 ((x)->flags & SD_F_BUSY), \
575 ("%s(%d): [PCM BUSYASSERT] " \
576 "Failed, snddev_info=%p", \
577 __func__, __LINE__, x))
578
579 #define PCM_GIANT_ENTER(x) do { \
580 int _pcm_giant = 0; \
581 PCM_UNLOCKASSERT(x); \
582 if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \
583 do { \
584 mtx_lock(&Giant); \
585 _pcm_giant = 1; \
586 } while (0)
587
588 #define PCM_GIANT_EXIT(x) do { \
589 PCM_UNLOCKASSERT(x); \
590 KASSERT(_pcm_giant == 0 || _pcm_giant == 1, \
591 ("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \
592 __func__, __LINE__)); \
593 KASSERT(!((x)->flags & SD_F_MPSAFE) || \
594 (((x)->flags & SD_F_MPSAFE) && _pcm_giant == 0), \
595 ("%s(%d): [GIANT EXIT] MPSAFE Giant?", \
596 __func__, __LINE__)); \
597 if (_pcm_giant != 0) { \
598 mtx_assert(&Giant, MA_OWNED); \
599 _pcm_giant = 0; \
600 mtx_unlock(&Giant); \
601 } \
602 } while (0)
603 #endif /* !SND_DIAGNOSTIC */
604
605 #define PCM_GIANT_LEAVE(x) \
606 PCM_GIANT_EXIT(x); \
607 } while (0)
608
609 #ifdef KLD_MODULE
610 #define PCM_KLDSTRING(a) ("kld " # a)
611 #else
612 #define PCM_KLDSTRING(a) ""
613 #endif
614
615 #endif /* _KERNEL */
616
617 #endif /* _OS_H_ */
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