]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Digital Audio (PCM) abstract layer / OSS compatible | |
3 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> | |
4 | * | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #if 0 | |
23 | #define PLUGIN_DEBUG | |
24 | #endif | |
25 | #if 0 | |
26 | #define OSS_DEBUG | |
27 | #endif | |
28 | ||
29 | #include <sound/driver.h> | |
30 | #include <linux/init.h> | |
1da177e4 LT |
31 | #include <linux/slab.h> |
32 | #include <linux/time.h> | |
33 | #include <linux/vmalloc.h> | |
34 | #include <linux/moduleparam.h> | |
543537bd | 35 | #include <linux/string.h> |
1da177e4 LT |
36 | #include <sound/core.h> |
37 | #include <sound/minors.h> | |
38 | #include <sound/pcm.h> | |
39 | #include <sound/pcm_params.h> | |
40 | #include "pcm_plugin.h" | |
41 | #include <sound/info.h> | |
42 | #include <linux/soundcard.h> | |
43 | #include <sound/initval.h> | |
44 | ||
45 | #define OSS_ALSAEMULVER _SIOR ('M', 249, int) | |
46 | ||
6581f4e7 | 47 | static int dsp_map[SNDRV_CARDS]; |
1da177e4 LT |
48 | static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1}; |
49 | static int nonblock_open = 1; | |
50 | ||
51 | MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Abramo Bagnara <abramo@alsa-project.org>"); | |
52 | MODULE_DESCRIPTION("PCM OSS emulation for ALSA."); | |
53 | MODULE_LICENSE("GPL"); | |
54 | module_param_array(dsp_map, int, NULL, 0444); | |
55 | MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device."); | |
56 | module_param_array(adsp_map, int, NULL, 0444); | |
57 | MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device."); | |
58 | module_param(nonblock_open, bool, 0644); | |
59 | MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices."); | |
60 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM); | |
61 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1); | |
62 | ||
6ac77bc1 TI |
63 | extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg); |
64 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file); | |
65 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file); | |
66 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file); | |
1da177e4 LT |
67 | |
68 | static inline mm_segment_t snd_enter_user(void) | |
69 | { | |
70 | mm_segment_t fs = get_fs(); | |
71 | set_fs(get_ds()); | |
72 | return fs; | |
73 | } | |
74 | ||
75 | static inline void snd_leave_user(mm_segment_t fs) | |
76 | { | |
77 | set_fs(fs); | |
78 | } | |
79 | ||
e88e8ae6 TI |
80 | /* |
81 | * helper functions to process hw_params | |
82 | */ | |
83 | static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin) | |
84 | { | |
85 | int changed = 0; | |
86 | if (i->min < min) { | |
87 | i->min = min; | |
88 | i->openmin = openmin; | |
89 | changed = 1; | |
90 | } else if (i->min == min && !i->openmin && openmin) { | |
91 | i->openmin = 1; | |
92 | changed = 1; | |
93 | } | |
94 | if (i->integer) { | |
95 | if (i->openmin) { | |
96 | i->min++; | |
97 | i->openmin = 0; | |
98 | } | |
99 | } | |
100 | if (snd_interval_checkempty(i)) { | |
101 | snd_interval_none(i); | |
102 | return -EINVAL; | |
103 | } | |
104 | return changed; | |
105 | } | |
106 | ||
107 | static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax) | |
108 | { | |
109 | int changed = 0; | |
110 | if (i->max > max) { | |
111 | i->max = max; | |
112 | i->openmax = openmax; | |
113 | changed = 1; | |
114 | } else if (i->max == max && !i->openmax && openmax) { | |
115 | i->openmax = 1; | |
116 | changed = 1; | |
117 | } | |
118 | if (i->integer) { | |
119 | if (i->openmax) { | |
120 | i->max--; | |
121 | i->openmax = 0; | |
122 | } | |
123 | } | |
124 | if (snd_interval_checkempty(i)) { | |
125 | snd_interval_none(i); | |
126 | return -EINVAL; | |
127 | } | |
128 | return changed; | |
129 | } | |
130 | ||
131 | static int snd_interval_refine_set(struct snd_interval *i, unsigned int val) | |
132 | { | |
133 | struct snd_interval t; | |
134 | t.empty = 0; | |
135 | t.min = t.max = val; | |
136 | t.openmin = t.openmax = 0; | |
137 | t.integer = 1; | |
138 | return snd_interval_refine(i, &t); | |
139 | } | |
140 | ||
141 | /** | |
142 | * snd_pcm_hw_param_value_min | |
143 | * @params: the hw_params instance | |
144 | * @var: parameter to retrieve | |
145 | * @dir: pointer to the direction (-1,0,1) or NULL | |
146 | * | |
147 | * Return the minimum value for field PAR. | |
148 | */ | |
149 | static unsigned int | |
150 | snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params, | |
151 | snd_pcm_hw_param_t var, int *dir) | |
152 | { | |
153 | if (hw_is_mask(var)) { | |
154 | if (dir) | |
155 | *dir = 0; | |
156 | return snd_mask_min(hw_param_mask_c(params, var)); | |
157 | } | |
158 | if (hw_is_interval(var)) { | |
159 | const struct snd_interval *i = hw_param_interval_c(params, var); | |
160 | if (dir) | |
161 | *dir = i->openmin; | |
162 | return snd_interval_min(i); | |
163 | } | |
164 | return -EINVAL; | |
165 | } | |
166 | ||
167 | /** | |
168 | * snd_pcm_hw_param_value_max | |
169 | * @params: the hw_params instance | |
170 | * @var: parameter to retrieve | |
171 | * @dir: pointer to the direction (-1,0,1) or NULL | |
172 | * | |
173 | * Return the maximum value for field PAR. | |
174 | */ | |
175 | static unsigned int | |
176 | snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params, | |
177 | snd_pcm_hw_param_t var, int *dir) | |
178 | { | |
179 | if (hw_is_mask(var)) { | |
180 | if (dir) | |
181 | *dir = 0; | |
182 | return snd_mask_max(hw_param_mask_c(params, var)); | |
183 | } | |
184 | if (hw_is_interval(var)) { | |
185 | const struct snd_interval *i = hw_param_interval_c(params, var); | |
186 | if (dir) | |
187 | *dir = - (int) i->openmax; | |
188 | return snd_interval_max(i); | |
189 | } | |
190 | return -EINVAL; | |
191 | } | |
192 | ||
193 | static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params, | |
194 | snd_pcm_hw_param_t var, | |
195 | const struct snd_mask *val) | |
196 | { | |
197 | int changed; | |
198 | changed = snd_mask_refine(hw_param_mask(params, var), val); | |
199 | if (changed) { | |
200 | params->cmask |= 1 << var; | |
201 | params->rmask |= 1 << var; | |
202 | } | |
203 | return changed; | |
204 | } | |
205 | ||
206 | static int snd_pcm_hw_param_mask(struct snd_pcm_substream *pcm, | |
207 | struct snd_pcm_hw_params *params, | |
208 | snd_pcm_hw_param_t var, | |
209 | const struct snd_mask *val) | |
210 | { | |
211 | int changed = _snd_pcm_hw_param_mask(params, var, val); | |
212 | if (changed < 0) | |
213 | return changed; | |
214 | if (params->rmask) { | |
215 | int err = snd_pcm_hw_refine(pcm, params); | |
216 | if (err < 0) | |
217 | return err; | |
218 | } | |
219 | return 0; | |
220 | } | |
221 | ||
222 | static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params, | |
223 | snd_pcm_hw_param_t var, unsigned int val, | |
224 | int dir) | |
225 | { | |
226 | int changed; | |
227 | int open = 0; | |
228 | if (dir) { | |
229 | if (dir > 0) { | |
230 | open = 1; | |
231 | } else if (dir < 0) { | |
232 | if (val > 0) { | |
233 | open = 1; | |
234 | val--; | |
235 | } | |
236 | } | |
237 | } | |
238 | if (hw_is_mask(var)) | |
239 | changed = snd_mask_refine_min(hw_param_mask(params, var), | |
240 | val + !!open); | |
241 | else if (hw_is_interval(var)) | |
242 | changed = snd_interval_refine_min(hw_param_interval(params, var), | |
243 | val, open); | |
244 | else | |
245 | return -EINVAL; | |
246 | if (changed) { | |
247 | params->cmask |= 1 << var; | |
248 | params->rmask |= 1 << var; | |
249 | } | |
250 | return changed; | |
251 | } | |
252 | ||
253 | /** | |
254 | * snd_pcm_hw_param_min | |
255 | * @pcm: PCM instance | |
256 | * @params: the hw_params instance | |
257 | * @var: parameter to retrieve | |
258 | * @val: minimal value | |
259 | * @dir: pointer to the direction (-1,0,1) or NULL | |
260 | * | |
261 | * Inside configuration space defined by PARAMS remove from PAR all | |
262 | * values < VAL. Reduce configuration space accordingly. | |
263 | * Return new minimum or -EINVAL if the configuration space is empty | |
264 | */ | |
265 | static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm, | |
266 | struct snd_pcm_hw_params *params, | |
267 | snd_pcm_hw_param_t var, unsigned int val, | |
268 | int *dir) | |
269 | { | |
270 | int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0); | |
271 | if (changed < 0) | |
272 | return changed; | |
273 | if (params->rmask) { | |
274 | int err = snd_pcm_hw_refine(pcm, params); | |
275 | if (err < 0) | |
276 | return err; | |
277 | } | |
278 | return snd_pcm_hw_param_value_min(params, var, dir); | |
279 | } | |
280 | ||
281 | static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params, | |
282 | snd_pcm_hw_param_t var, unsigned int val, | |
283 | int dir) | |
284 | { | |
285 | int changed; | |
286 | int open = 0; | |
287 | if (dir) { | |
288 | if (dir < 0) { | |
289 | open = 1; | |
290 | } else if (dir > 0) { | |
291 | open = 1; | |
292 | val++; | |
293 | } | |
294 | } | |
295 | if (hw_is_mask(var)) { | |
296 | if (val == 0 && open) { | |
297 | snd_mask_none(hw_param_mask(params, var)); | |
298 | changed = -EINVAL; | |
299 | } else | |
300 | changed = snd_mask_refine_max(hw_param_mask(params, var), | |
301 | val - !!open); | |
302 | } else if (hw_is_interval(var)) | |
303 | changed = snd_interval_refine_max(hw_param_interval(params, var), | |
304 | val, open); | |
305 | else | |
306 | return -EINVAL; | |
307 | if (changed) { | |
308 | params->cmask |= 1 << var; | |
309 | params->rmask |= 1 << var; | |
310 | } | |
311 | return changed; | |
312 | } | |
313 | ||
314 | /** | |
315 | * snd_pcm_hw_param_max | |
316 | * @pcm: PCM instance | |
317 | * @params: the hw_params instance | |
318 | * @var: parameter to retrieve | |
319 | * @val: maximal value | |
320 | * @dir: pointer to the direction (-1,0,1) or NULL | |
321 | * | |
322 | * Inside configuration space defined by PARAMS remove from PAR all | |
323 | * values >= VAL + 1. Reduce configuration space accordingly. | |
324 | * Return new maximum or -EINVAL if the configuration space is empty | |
325 | */ | |
326 | static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm, | |
327 | struct snd_pcm_hw_params *params, | |
328 | snd_pcm_hw_param_t var, unsigned int val, | |
329 | int *dir) | |
330 | { | |
331 | int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0); | |
332 | if (changed < 0) | |
333 | return changed; | |
334 | if (params->rmask) { | |
335 | int err = snd_pcm_hw_refine(pcm, params); | |
336 | if (err < 0) | |
337 | return err; | |
338 | } | |
339 | return snd_pcm_hw_param_value_max(params, var, dir); | |
340 | } | |
341 | ||
342 | static int boundary_sub(int a, int adir, | |
343 | int b, int bdir, | |
344 | int *c, int *cdir) | |
345 | { | |
346 | adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0); | |
347 | bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0); | |
348 | *c = a - b; | |
349 | *cdir = adir - bdir; | |
350 | if (*cdir == -2) { | |
351 | (*c)--; | |
352 | } else if (*cdir == 2) { | |
353 | (*c)++; | |
354 | } | |
355 | return 0; | |
356 | } | |
357 | ||
358 | static int boundary_lt(unsigned int a, int adir, | |
359 | unsigned int b, int bdir) | |
360 | { | |
361 | if (adir < 0) { | |
362 | a--; | |
363 | adir = 1; | |
364 | } else if (adir > 0) | |
365 | adir = 1; | |
366 | if (bdir < 0) { | |
367 | b--; | |
368 | bdir = 1; | |
369 | } else if (bdir > 0) | |
370 | bdir = 1; | |
371 | return a < b || (a == b && adir < bdir); | |
372 | } | |
373 | ||
374 | /* Return 1 if min is nearer to best than max */ | |
375 | static int boundary_nearer(int min, int mindir, | |
376 | int best, int bestdir, | |
377 | int max, int maxdir) | |
378 | { | |
379 | int dmin, dmindir; | |
380 | int dmax, dmaxdir; | |
381 | boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir); | |
382 | boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir); | |
383 | return boundary_lt(dmin, dmindir, dmax, dmaxdir); | |
384 | } | |
385 | ||
386 | /** | |
387 | * snd_pcm_hw_param_near | |
388 | * @pcm: PCM instance | |
389 | * @params: the hw_params instance | |
390 | * @var: parameter to retrieve | |
391 | * @best: value to set | |
392 | * @dir: pointer to the direction (-1,0,1) or NULL | |
393 | * | |
394 | * Inside configuration space defined by PARAMS set PAR to the available value | |
395 | * nearest to VAL. Reduce configuration space accordingly. | |
396 | * This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS, | |
397 | * SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT. | |
398 | * Return the value found. | |
399 | */ | |
400 | static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm, | |
401 | struct snd_pcm_hw_params *params, | |
402 | snd_pcm_hw_param_t var, unsigned int best, | |
403 | int *dir) | |
404 | { | |
405 | struct snd_pcm_hw_params *save = NULL; | |
406 | int v; | |
407 | unsigned int saved_min; | |
408 | int last = 0; | |
409 | int min, max; | |
410 | int mindir, maxdir; | |
411 | int valdir = dir ? *dir : 0; | |
412 | /* FIXME */ | |
413 | if (best > INT_MAX) | |
414 | best = INT_MAX; | |
415 | min = max = best; | |
416 | mindir = maxdir = valdir; | |
417 | if (maxdir > 0) | |
418 | maxdir = 0; | |
419 | else if (maxdir == 0) | |
420 | maxdir = -1; | |
421 | else { | |
422 | maxdir = 1; | |
423 | max--; | |
424 | } | |
425 | save = kmalloc(sizeof(*save), GFP_KERNEL); | |
426 | if (save == NULL) | |
427 | return -ENOMEM; | |
428 | *save = *params; | |
429 | saved_min = min; | |
430 | min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir); | |
431 | if (min >= 0) { | |
432 | struct snd_pcm_hw_params *params1; | |
433 | if (max < 0) | |
434 | goto _end; | |
435 | if ((unsigned int)min == saved_min && mindir == valdir) | |
436 | goto _end; | |
437 | params1 = kmalloc(sizeof(*params1), GFP_KERNEL); | |
438 | if (params1 == NULL) { | |
439 | kfree(save); | |
440 | return -ENOMEM; | |
441 | } | |
442 | *params1 = *save; | |
443 | max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir); | |
444 | if (max < 0) { | |
445 | kfree(params1); | |
446 | goto _end; | |
447 | } | |
448 | if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) { | |
449 | *params = *params1; | |
450 | last = 1; | |
451 | } | |
452 | kfree(params1); | |
453 | } else { | |
454 | *params = *save; | |
455 | max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir); | |
456 | snd_assert(max >= 0, return -EINVAL); | |
457 | last = 1; | |
458 | } | |
459 | _end: | |
460 | kfree(save); | |
461 | if (last) | |
462 | v = snd_pcm_hw_param_last(pcm, params, var, dir); | |
463 | else | |
464 | v = snd_pcm_hw_param_first(pcm, params, var, dir); | |
465 | snd_assert(v >= 0, return -EINVAL); | |
466 | return v; | |
467 | } | |
468 | ||
469 | static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params, | |
470 | snd_pcm_hw_param_t var, unsigned int val, | |
471 | int dir) | |
472 | { | |
473 | int changed; | |
474 | if (hw_is_mask(var)) { | |
475 | struct snd_mask *m = hw_param_mask(params, var); | |
476 | if (val == 0 && dir < 0) { | |
477 | changed = -EINVAL; | |
478 | snd_mask_none(m); | |
479 | } else { | |
480 | if (dir > 0) | |
481 | val++; | |
482 | else if (dir < 0) | |
483 | val--; | |
484 | changed = snd_mask_refine_set(hw_param_mask(params, var), val); | |
485 | } | |
486 | } else if (hw_is_interval(var)) { | |
487 | struct snd_interval *i = hw_param_interval(params, var); | |
488 | if (val == 0 && dir < 0) { | |
489 | changed = -EINVAL; | |
490 | snd_interval_none(i); | |
491 | } else if (dir == 0) | |
492 | changed = snd_interval_refine_set(i, val); | |
493 | else { | |
494 | struct snd_interval t; | |
495 | t.openmin = 1; | |
496 | t.openmax = 1; | |
497 | t.empty = 0; | |
498 | t.integer = 0; | |
499 | if (dir < 0) { | |
500 | t.min = val - 1; | |
501 | t.max = val; | |
502 | } else { | |
503 | t.min = val; | |
504 | t.max = val+1; | |
505 | } | |
506 | changed = snd_interval_refine(i, &t); | |
507 | } | |
508 | } else | |
509 | return -EINVAL; | |
510 | if (changed) { | |
511 | params->cmask |= 1 << var; | |
512 | params->rmask |= 1 << var; | |
513 | } | |
514 | return changed; | |
515 | } | |
516 | ||
517 | /** | |
518 | * snd_pcm_hw_param_set | |
519 | * @pcm: PCM instance | |
520 | * @params: the hw_params instance | |
521 | * @var: parameter to retrieve | |
522 | * @val: value to set | |
523 | * @dir: pointer to the direction (-1,0,1) or NULL | |
524 | * | |
525 | * Inside configuration space defined by PARAMS remove from PAR all | |
526 | * values != VAL. Reduce configuration space accordingly. | |
527 | * Return VAL or -EINVAL if the configuration space is empty | |
528 | */ | |
529 | static int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm, | |
530 | struct snd_pcm_hw_params *params, | |
531 | snd_pcm_hw_param_t var, unsigned int val, | |
532 | int dir) | |
533 | { | |
534 | int changed = _snd_pcm_hw_param_set(params, var, val, dir); | |
535 | if (changed < 0) | |
536 | return changed; | |
537 | if (params->rmask) { | |
538 | int err = snd_pcm_hw_refine(pcm, params); | |
539 | if (err < 0) | |
540 | return err; | |
541 | } | |
542 | return snd_pcm_hw_param_value(params, var, NULL); | |
543 | } | |
544 | ||
545 | static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params, | |
546 | snd_pcm_hw_param_t var) | |
547 | { | |
548 | int changed; | |
549 | changed = snd_interval_setinteger(hw_param_interval(params, var)); | |
550 | if (changed) { | |
551 | params->cmask |= 1 << var; | |
552 | params->rmask |= 1 << var; | |
553 | } | |
554 | return changed; | |
555 | } | |
556 | ||
557 | /* | |
558 | * plugin | |
559 | */ | |
560 | ||
21a3479a | 561 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
6ac77bc1 | 562 | static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream) |
1da177e4 | 563 | { |
6ac77bc1 TI |
564 | struct snd_pcm_runtime *runtime = substream->runtime; |
565 | struct snd_pcm_plugin *plugin, *next; | |
1da177e4 LT |
566 | |
567 | plugin = runtime->oss.plugin_first; | |
568 | while (plugin) { | |
569 | next = plugin->next; | |
570 | snd_pcm_plugin_free(plugin); | |
571 | plugin = next; | |
572 | } | |
573 | runtime->oss.plugin_first = runtime->oss.plugin_last = NULL; | |
574 | return 0; | |
575 | } | |
576 | ||
6ac77bc1 | 577 | static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin) |
1da177e4 | 578 | { |
6ac77bc1 | 579 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
1da177e4 LT |
580 | plugin->next = runtime->oss.plugin_first; |
581 | plugin->prev = NULL; | |
582 | if (runtime->oss.plugin_first) { | |
583 | runtime->oss.plugin_first->prev = plugin; | |
584 | runtime->oss.plugin_first = plugin; | |
585 | } else { | |
586 | runtime->oss.plugin_last = | |
587 | runtime->oss.plugin_first = plugin; | |
588 | } | |
589 | return 0; | |
590 | } | |
591 | ||
6ac77bc1 | 592 | int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin) |
1da177e4 | 593 | { |
6ac77bc1 | 594 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
1da177e4 LT |
595 | plugin->next = NULL; |
596 | plugin->prev = runtime->oss.plugin_last; | |
597 | if (runtime->oss.plugin_last) { | |
598 | runtime->oss.plugin_last->next = plugin; | |
599 | runtime->oss.plugin_last = plugin; | |
600 | } else { | |
601 | runtime->oss.plugin_last = | |
602 | runtime->oss.plugin_first = plugin; | |
603 | } | |
604 | return 0; | |
605 | } | |
21a3479a | 606 | #endif /* CONFIG_SND_PCM_OSS_PLUGINS */ |
1da177e4 | 607 | |
6ac77bc1 | 608 | static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames) |
1da177e4 | 609 | { |
6ac77bc1 | 610 | struct snd_pcm_runtime *runtime = substream->runtime; |
af081613 | 611 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
bfc5bddb | 612 | long bytes = frames_to_bytes(runtime, frames); |
1da177e4 | 613 | if (buffer_size == runtime->oss.buffer_bytes) |
bfc5bddb | 614 | return bytes; |
cdc5c53f TI |
615 | #if BITS_PER_LONG >= 64 |
616 | return runtime->oss.buffer_bytes * bytes / buffer_size; | |
617 | #else | |
618 | { | |
619 | u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes; | |
620 | u32 rem; | |
621 | div64_32(&bsize, buffer_size, &rem); | |
622 | return (long)bsize; | |
623 | } | |
624 | #endif | |
1da177e4 LT |
625 | } |
626 | ||
6ac77bc1 | 627 | static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes) |
1da177e4 | 628 | { |
6ac77bc1 | 629 | struct snd_pcm_runtime *runtime = substream->runtime; |
af081613 | 630 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
1da177e4 LT |
631 | if (buffer_size == runtime->oss.buffer_bytes) |
632 | return bytes_to_frames(runtime, bytes); | |
633 | return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes); | |
634 | } | |
635 | ||
636 | static int snd_pcm_oss_format_from(int format) | |
637 | { | |
638 | switch (format) { | |
639 | case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; | |
640 | case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW; | |
641 | case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM; | |
642 | case AFMT_U8: return SNDRV_PCM_FORMAT_U8; | |
643 | case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE; | |
644 | case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE; | |
645 | case AFMT_S8: return SNDRV_PCM_FORMAT_S8; | |
646 | case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE; | |
647 | case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE; | |
648 | case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG; | |
649 | default: return SNDRV_PCM_FORMAT_U8; | |
650 | } | |
651 | } | |
652 | ||
653 | static int snd_pcm_oss_format_to(int format) | |
654 | { | |
655 | switch (format) { | |
656 | case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; | |
657 | case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW; | |
658 | case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM; | |
659 | case SNDRV_PCM_FORMAT_U8: return AFMT_U8; | |
660 | case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE; | |
661 | case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE; | |
662 | case SNDRV_PCM_FORMAT_S8: return AFMT_S8; | |
663 | case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE; | |
664 | case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE; | |
665 | case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG; | |
666 | default: return -EINVAL; | |
667 | } | |
668 | } | |
669 | ||
6ac77bc1 TI |
670 | static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, |
671 | struct snd_pcm_hw_params *oss_params, | |
672 | struct snd_pcm_hw_params *slave_params) | |
1da177e4 LT |
673 | { |
674 | size_t s; | |
675 | size_t oss_buffer_size, oss_period_size, oss_periods; | |
676 | size_t min_period_size, max_period_size; | |
6ac77bc1 | 677 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
678 | size_t oss_frame_size; |
679 | ||
680 | oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * | |
681 | params_channels(oss_params) / 8; | |
682 | ||
683 | oss_buffer_size = snd_pcm_plug_client_size(substream, | |
684 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; | |
685 | oss_buffer_size = 1 << ld2(oss_buffer_size); | |
9c323fcb | 686 | if (atomic_read(&substream->mmap_count)) { |
1da177e4 LT |
687 | if (oss_buffer_size > runtime->oss.mmap_bytes) |
688 | oss_buffer_size = runtime->oss.mmap_bytes; | |
689 | } | |
690 | ||
060d77b9 TI |
691 | if (substream->oss.setup.period_size > 16) |
692 | oss_period_size = substream->oss.setup.period_size; | |
1da177e4 LT |
693 | else if (runtime->oss.fragshift) { |
694 | oss_period_size = 1 << runtime->oss.fragshift; | |
695 | if (oss_period_size > oss_buffer_size / 2) | |
696 | oss_period_size = oss_buffer_size / 2; | |
697 | } else { | |
698 | int sd; | |
699 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; | |
700 | ||
701 | oss_period_size = oss_buffer_size; | |
702 | do { | |
703 | oss_period_size /= 2; | |
704 | } while (oss_period_size > bytes_per_sec); | |
705 | if (runtime->oss.subdivision == 0) { | |
706 | sd = 4; | |
707 | if (oss_period_size / sd > 4096) | |
708 | sd *= 2; | |
709 | if (oss_period_size / sd < 4096) | |
710 | sd = 1; | |
711 | } else | |
712 | sd = runtime->oss.subdivision; | |
713 | oss_period_size /= sd; | |
714 | if (oss_period_size < 16) | |
715 | oss_period_size = 16; | |
716 | } | |
717 | ||
718 | min_period_size = snd_pcm_plug_client_size(substream, | |
719 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); | |
720 | min_period_size *= oss_frame_size; | |
721 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); | |
722 | if (oss_period_size < min_period_size) | |
723 | oss_period_size = min_period_size; | |
724 | ||
725 | max_period_size = snd_pcm_plug_client_size(substream, | |
726 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); | |
727 | max_period_size *= oss_frame_size; | |
728 | max_period_size = 1 << ld2(max_period_size); | |
729 | if (oss_period_size > max_period_size) | |
730 | oss_period_size = max_period_size; | |
731 | ||
732 | oss_periods = oss_buffer_size / oss_period_size; | |
733 | ||
060d77b9 TI |
734 | if (substream->oss.setup.periods > 1) |
735 | oss_periods = substream->oss.setup.periods; | |
1da177e4 LT |
736 | |
737 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); | |
738 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) | |
739 | s = runtime->oss.maxfrags; | |
740 | if (oss_periods > s) | |
741 | oss_periods = s; | |
742 | ||
743 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); | |
744 | if (s < 2) | |
745 | s = 2; | |
746 | if (oss_periods < s) | |
747 | oss_periods = s; | |
748 | ||
749 | while (oss_period_size * oss_periods > oss_buffer_size) | |
750 | oss_period_size /= 2; | |
751 | ||
752 | snd_assert(oss_period_size >= 16, return -EINVAL); | |
753 | runtime->oss.period_bytes = oss_period_size; | |
754 | runtime->oss.period_frames = 1; | |
755 | runtime->oss.periods = oss_periods; | |
756 | return 0; | |
757 | } | |
758 | ||
6ac77bc1 TI |
759 | static int choose_rate(struct snd_pcm_substream *substream, |
760 | struct snd_pcm_hw_params *params, unsigned int best_rate) | |
1da177e4 | 761 | { |
6ac77bc1 TI |
762 | struct snd_interval *it; |
763 | struct snd_pcm_hw_params *save; | |
1da177e4 LT |
764 | unsigned int rate, prev; |
765 | ||
766 | save = kmalloc(sizeof(*save), GFP_KERNEL); | |
767 | if (save == NULL) | |
768 | return -ENOMEM; | |
769 | *save = *params; | |
770 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); | |
771 | ||
772 | /* try multiples of the best rate */ | |
773 | rate = best_rate; | |
774 | for (;;) { | |
775 | if (it->max < rate || (it->max == rate && it->openmax)) | |
776 | break; | |
777 | if (it->min < rate || (it->min == rate && !it->openmin)) { | |
778 | int ret; | |
779 | ret = snd_pcm_hw_param_set(substream, params, | |
780 | SNDRV_PCM_HW_PARAM_RATE, | |
781 | rate, 0); | |
782 | if (ret == (int)rate) { | |
783 | kfree(save); | |
784 | return rate; | |
785 | } | |
786 | *params = *save; | |
787 | } | |
788 | prev = rate; | |
789 | rate += best_rate; | |
790 | if (rate <= prev) | |
791 | break; | |
792 | } | |
793 | ||
794 | /* not found, use the nearest rate */ | |
795 | kfree(save); | |
796 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); | |
797 | } | |
798 | ||
6ac77bc1 | 799 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
1da177e4 | 800 | { |
6ac77bc1 TI |
801 | struct snd_pcm_runtime *runtime = substream->runtime; |
802 | struct snd_pcm_hw_params *params, *sparams; | |
803 | struct snd_pcm_sw_params *sw_params; | |
1da177e4 LT |
804 | ssize_t oss_buffer_size, oss_period_size; |
805 | size_t oss_frame_size; | |
806 | int err; | |
807 | int direct; | |
808 | int format, sformat, n; | |
6ac77bc1 TI |
809 | struct snd_mask sformat_mask; |
810 | struct snd_mask mask; | |
1da177e4 | 811 | |
e3a5d59a TI |
812 | if (mutex_lock_interruptible(&runtime->oss.params_lock)) |
813 | return -EINTR; | |
1da177e4 LT |
814 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); |
815 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
816 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); | |
817 | if (!sw_params || !params || !sparams) { | |
818 | snd_printd("No memory\n"); | |
819 | err = -ENOMEM; | |
820 | goto failure; | |
821 | } | |
822 | ||
9c323fcb | 823 | if (atomic_read(&substream->mmap_count)) |
1da177e4 | 824 | direct = 1; |
060d77b9 TI |
825 | else |
826 | direct = substream->oss.setup.direct; | |
1da177e4 LT |
827 | |
828 | _snd_pcm_hw_params_any(sparams); | |
829 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); | |
830 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); | |
831 | snd_mask_none(&mask); | |
9c323fcb | 832 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
833 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); |
834 | else { | |
835 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); | |
836 | if (!direct) | |
837 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); | |
838 | } | |
839 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); | |
840 | if (err < 0) { | |
841 | snd_printd("No usable accesses\n"); | |
842 | err = -EINVAL; | |
843 | goto failure; | |
844 | } | |
845 | choose_rate(substream, sparams, runtime->oss.rate); | |
846 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); | |
847 | ||
848 | format = snd_pcm_oss_format_from(runtime->oss.format); | |
849 | ||
850 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); | |
851 | if (direct) | |
852 | sformat = format; | |
853 | else | |
854 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); | |
855 | ||
856 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { | |
857 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { | |
858 | if (snd_mask_test(&sformat_mask, sformat) && | |
859 | snd_pcm_oss_format_to(sformat) >= 0) | |
860 | break; | |
861 | } | |
862 | if (sformat > SNDRV_PCM_FORMAT_LAST) { | |
863 | snd_printd("Cannot find a format!!!\n"); | |
864 | err = -EINVAL; | |
865 | goto failure; | |
866 | } | |
867 | } | |
868 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); | |
869 | snd_assert(err >= 0, goto failure); | |
870 | ||
871 | if (direct) { | |
872 | memcpy(params, sparams, sizeof(*params)); | |
873 | } else { | |
874 | _snd_pcm_hw_params_any(params); | |
875 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, | |
876 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); | |
877 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, | |
878 | snd_pcm_oss_format_from(runtime->oss.format), 0); | |
879 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, | |
880 | runtime->oss.channels, 0); | |
881 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, | |
882 | runtime->oss.rate, 0); | |
883 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", | |
884 | params_access(params), params_format(params), | |
885 | params_channels(params), params_rate(params)); | |
886 | } | |
887 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", | |
888 | params_access(sparams), params_format(sparams), | |
889 | params_channels(sparams), params_rate(sparams)); | |
890 | ||
891 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * | |
892 | params_channels(params) / 8; | |
893 | ||
21a3479a | 894 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
895 | snd_pcm_oss_plugin_clear(substream); |
896 | if (!direct) { | |
897 | /* add necessary plugins */ | |
898 | snd_pcm_oss_plugin_clear(substream); | |
899 | if ((err = snd_pcm_plug_format_plugins(substream, | |
900 | params, | |
901 | sparams)) < 0) { | |
902 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); | |
903 | snd_pcm_oss_plugin_clear(substream); | |
904 | goto failure; | |
905 | } | |
906 | if (runtime->oss.plugin_first) { | |
6ac77bc1 | 907 | struct snd_pcm_plugin *plugin; |
1da177e4 LT |
908 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
909 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); | |
910 | snd_pcm_oss_plugin_clear(substream); | |
911 | goto failure; | |
912 | } | |
913 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
914 | err = snd_pcm_plugin_append(plugin); | |
915 | } else { | |
916 | err = snd_pcm_plugin_insert(plugin); | |
917 | } | |
918 | if (err < 0) { | |
919 | snd_pcm_oss_plugin_clear(substream); | |
920 | goto failure; | |
921 | } | |
922 | } | |
923 | } | |
21a3479a | 924 | #endif |
1da177e4 LT |
925 | |
926 | err = snd_pcm_oss_period_size(substream, params, sparams); | |
927 | if (err < 0) | |
928 | goto failure; | |
929 | ||
930 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); | |
931 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); | |
932 | snd_assert(err >= 0, goto failure); | |
933 | ||
934 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, | |
935 | runtime->oss.periods, NULL); | |
936 | snd_assert(err >= 0, goto failure); | |
937 | ||
938 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
939 | ||
940 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { | |
941 | snd_printd("HW_PARAMS failed: %i\n", err); | |
942 | goto failure; | |
943 | } | |
944 | ||
945 | memset(sw_params, 0, sizeof(*sw_params)); | |
946 | if (runtime->oss.trigger) { | |
947 | sw_params->start_threshold = 1; | |
948 | } else { | |
949 | sw_params->start_threshold = runtime->boundary; | |
950 | } | |
9c323fcb TI |
951 | if (atomic_read(&substream->mmap_count) || |
952 | substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
1da177e4 LT |
953 | sw_params->stop_threshold = runtime->boundary; |
954 | else | |
955 | sw_params->stop_threshold = runtime->buffer_size; | |
956 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
957 | sw_params->period_step = 1; | |
958 | sw_params->sleep_min = 0; | |
004e6538 TI |
959 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
960 | 1 : runtime->period_size; | |
1da177e4 | 961 | sw_params->xfer_align = 1; |
9c323fcb | 962 | if (atomic_read(&substream->mmap_count) || |
060d77b9 | 963 | substream->oss.setup.nosilence) { |
1da177e4 LT |
964 | sw_params->silence_threshold = 0; |
965 | sw_params->silence_size = 0; | |
966 | } else { | |
967 | snd_pcm_uframes_t frames; | |
968 | frames = runtime->period_size + 16; | |
969 | if (frames > runtime->buffer_size) | |
970 | frames = runtime->buffer_size; | |
971 | sw_params->silence_threshold = frames; | |
972 | sw_params->silence_size = frames; | |
973 | } | |
974 | ||
975 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { | |
976 | snd_printd("SW_PARAMS failed: %i\n", err); | |
977 | goto failure; | |
978 | } | |
979 | ||
980 | runtime->oss.periods = params_periods(sparams); | |
981 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); | |
982 | snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure); | |
21a3479a | 983 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
984 | if (runtime->oss.plugin_first) { |
985 | err = snd_pcm_plug_alloc(substream, oss_period_size); | |
986 | if (err < 0) | |
987 | goto failure; | |
988 | } | |
21a3479a | 989 | #endif |
1da177e4 LT |
990 | oss_period_size *= oss_frame_size; |
991 | ||
992 | oss_buffer_size = oss_period_size * runtime->oss.periods; | |
993 | snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure); | |
994 | ||
995 | runtime->oss.period_bytes = oss_period_size; | |
996 | runtime->oss.buffer_bytes = oss_buffer_size; | |
997 | ||
998 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", | |
999 | runtime->oss.period_bytes, | |
1000 | runtime->oss.buffer_bytes); | |
1001 | pdprintf("slave: period_size = %i, buffer_size = %i\n", | |
1002 | params_period_size(sparams), | |
1003 | params_buffer_size(sparams)); | |
1004 | ||
1005 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); | |
1006 | runtime->oss.channels = params_channels(params); | |
1007 | runtime->oss.rate = params_rate(params); | |
1008 | ||
1009 | runtime->oss.params = 0; | |
1010 | runtime->oss.prepare = 1; | |
1011 | vfree(runtime->oss.buffer); | |
1012 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); | |
1013 | runtime->oss.buffer_used = 0; | |
1014 | if (runtime->dma_area) | |
1015 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); | |
1016 | ||
1017 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); | |
1018 | ||
1019 | err = 0; | |
1020 | failure: | |
1021 | kfree(sw_params); | |
1022 | kfree(params); | |
1023 | kfree(sparams); | |
e3a5d59a | 1024 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 LT |
1025 | return err; |
1026 | } | |
1027 | ||
6ac77bc1 | 1028 | static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream) |
1da177e4 LT |
1029 | { |
1030 | int idx, err; | |
6ac77bc1 | 1031 | struct snd_pcm_substream *asubstream = NULL, *substream; |
1da177e4 LT |
1032 | |
1033 | for (idx = 0; idx < 2; idx++) { | |
1034 | substream = pcm_oss_file->streams[idx]; | |
1035 | if (substream == NULL) | |
1036 | continue; | |
1037 | if (asubstream == NULL) | |
1038 | asubstream = substream; | |
1039 | if (substream->runtime->oss.params) { | |
1040 | err = snd_pcm_oss_change_params(substream); | |
1041 | if (err < 0) | |
1042 | return err; | |
1043 | } | |
1044 | } | |
1045 | snd_assert(asubstream != NULL, return -EIO); | |
1046 | if (r_substream) | |
1047 | *r_substream = asubstream; | |
1048 | return 0; | |
1049 | } | |
1050 | ||
6ac77bc1 | 1051 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
1da177e4 LT |
1052 | { |
1053 | int err; | |
6ac77bc1 | 1054 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1055 | |
1056 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); | |
1057 | if (err < 0) { | |
1058 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); | |
1059 | return err; | |
1060 | } | |
1061 | runtime->oss.prepare = 0; | |
1062 | runtime->oss.prev_hw_ptr_interrupt = 0; | |
1063 | runtime->oss.period_ptr = 0; | |
1064 | runtime->oss.buffer_used = 0; | |
1065 | ||
1066 | return 0; | |
1067 | } | |
1068 | ||
6ac77bc1 | 1069 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
1da177e4 | 1070 | { |
6ac77bc1 | 1071 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1072 | int err; |
1073 | ||
1074 | if (substream == NULL) | |
1075 | return 0; | |
1076 | runtime = substream->runtime; | |
1077 | if (runtime->oss.params) { | |
1078 | err = snd_pcm_oss_change_params(substream); | |
1079 | if (err < 0) | |
1080 | return err; | |
1081 | } | |
1082 | if (runtime->oss.prepare) { | |
1083 | err = snd_pcm_oss_prepare(substream); | |
1084 | if (err < 0) | |
1085 | return err; | |
1086 | } | |
1087 | return 0; | |
1088 | } | |
1089 | ||
6ac77bc1 | 1090 | static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay) |
1da177e4 | 1091 | { |
6ac77bc1 | 1092 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1093 | snd_pcm_uframes_t frames; |
1094 | int err = 0; | |
1095 | ||
1096 | while (1) { | |
1097 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); | |
1098 | if (err < 0) | |
1099 | break; | |
1100 | runtime = substream->runtime; | |
1101 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) | |
1102 | break; | |
1103 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ | |
1104 | /* until avail(delay) <= buffer_size */ | |
1105 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; | |
1106 | frames /= runtime->period_size; | |
1107 | frames *= runtime->period_size; | |
1108 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); | |
1109 | if (err < 0) | |
1110 | break; | |
1111 | } | |
1112 | return err; | |
1113 | } | |
1114 | ||
6ac77bc1 | 1115 | snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 1116 | { |
6ac77bc1 | 1117 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1118 | int ret; |
1119 | while (1) { | |
1120 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1121 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1122 | #ifdef OSS_DEBUG | |
1123 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
1124 | printk("pcm_oss: write: recovering from XRUN\n"); | |
1125 | else | |
1126 | printk("pcm_oss: write: recovering from SUSPEND\n"); | |
1127 | #endif | |
1128 | ret = snd_pcm_oss_prepare(substream); | |
1129 | if (ret < 0) | |
1130 | break; | |
1131 | } | |
1132 | if (in_kernel) { | |
1133 | mm_segment_t fs; | |
1134 | fs = snd_enter_user(); | |
1135 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); | |
1136 | snd_leave_user(fs); | |
1137 | } else { | |
1138 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); | |
1139 | } | |
1140 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
1141 | break; | |
1142 | /* test, if we can't store new data, because the stream */ | |
1143 | /* has not been started */ | |
1144 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) | |
1145 | return -EAGAIN; | |
1146 | } | |
1147 | return ret; | |
1148 | } | |
1149 | ||
6ac77bc1 | 1150 | snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 1151 | { |
6ac77bc1 | 1152 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1153 | snd_pcm_sframes_t delay; |
1154 | int ret; | |
1155 | while (1) { | |
1156 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1157 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1158 | #ifdef OSS_DEBUG | |
1159 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
1160 | printk("pcm_oss: read: recovering from XRUN\n"); | |
1161 | else | |
1162 | printk("pcm_oss: read: recovering from SUSPEND\n"); | |
1163 | #endif | |
1164 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
1165 | if (ret < 0) | |
1166 | break; | |
1167 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { | |
1168 | ret = snd_pcm_oss_prepare(substream); | |
1169 | if (ret < 0) | |
1170 | break; | |
1171 | } | |
1172 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); | |
1173 | if (ret < 0) | |
1174 | break; | |
1175 | if (in_kernel) { | |
1176 | mm_segment_t fs; | |
1177 | fs = snd_enter_user(); | |
1178 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); | |
1179 | snd_leave_user(fs); | |
1180 | } else { | |
1181 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); | |
1182 | } | |
1183 | if (ret == -EPIPE) { | |
1184 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { | |
1185 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
1186 | if (ret < 0) | |
1187 | break; | |
1188 | } | |
1189 | continue; | |
1190 | } | |
1191 | if (ret != -ESTRPIPE) | |
1192 | break; | |
1193 | } | |
1194 | return ret; | |
1195 | } | |
1196 | ||
6ac77bc1 | 1197 | snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 1198 | { |
6ac77bc1 | 1199 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1200 | int ret; |
1201 | while (1) { | |
1202 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1203 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1204 | #ifdef OSS_DEBUG | |
1205 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
1206 | printk("pcm_oss: writev: recovering from XRUN\n"); | |
1207 | else | |
1208 | printk("pcm_oss: writev: recovering from SUSPEND\n"); | |
1209 | #endif | |
1210 | ret = snd_pcm_oss_prepare(substream); | |
1211 | if (ret < 0) | |
1212 | break; | |
1213 | } | |
1214 | if (in_kernel) { | |
1215 | mm_segment_t fs; | |
1216 | fs = snd_enter_user(); | |
1217 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); | |
1218 | snd_leave_user(fs); | |
1219 | } else { | |
1220 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); | |
1221 | } | |
1222 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
1223 | break; | |
1224 | ||
1225 | /* test, if we can't store new data, because the stream */ | |
1226 | /* has not been started */ | |
1227 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) | |
1228 | return -EAGAIN; | |
1229 | } | |
1230 | return ret; | |
1231 | } | |
1232 | ||
6ac77bc1 | 1233 | snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 1234 | { |
6ac77bc1 | 1235 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1236 | int ret; |
1237 | while (1) { | |
1238 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1239 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1240 | #ifdef OSS_DEBUG | |
1241 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
1242 | printk("pcm_oss: readv: recovering from XRUN\n"); | |
1243 | else | |
1244 | printk("pcm_oss: readv: recovering from SUSPEND\n"); | |
1245 | #endif | |
1246 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
1247 | if (ret < 0) | |
1248 | break; | |
1249 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { | |
1250 | ret = snd_pcm_oss_prepare(substream); | |
1251 | if (ret < 0) | |
1252 | break; | |
1253 | } | |
1254 | if (in_kernel) { | |
1255 | mm_segment_t fs; | |
1256 | fs = snd_enter_user(); | |
1257 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); | |
1258 | snd_leave_user(fs); | |
1259 | } else { | |
1260 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); | |
1261 | } | |
1262 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
1263 | break; | |
1264 | } | |
1265 | return ret; | |
1266 | } | |
1267 | ||
6ac77bc1 | 1268 | static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel) |
1da177e4 | 1269 | { |
6ac77bc1 | 1270 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1271 | snd_pcm_sframes_t frames, frames1; |
21a3479a | 1272 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 | 1273 | if (runtime->oss.plugin_first) { |
6ac77bc1 | 1274 | struct snd_pcm_plugin_channel *channels; |
1da177e4 LT |
1275 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
1276 | if (!in_kernel) { | |
1277 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) | |
1278 | return -EFAULT; | |
1279 | buf = runtime->oss.buffer; | |
1280 | } | |
1281 | frames = bytes / oss_frame_bytes; | |
1282 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); | |
1283 | if (frames1 < 0) | |
1284 | return frames1; | |
1285 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); | |
1286 | if (frames1 <= 0) | |
1287 | return frames1; | |
1288 | bytes = frames1 * oss_frame_bytes; | |
21a3479a JK |
1289 | } else |
1290 | #endif | |
1291 | { | |
1da177e4 LT |
1292 | frames = bytes_to_frames(runtime, bytes); |
1293 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); | |
1294 | if (frames1 <= 0) | |
1295 | return frames1; | |
1296 | bytes = frames_to_bytes(runtime, frames1); | |
1297 | } | |
1298 | return bytes; | |
1299 | } | |
1300 | ||
6ac77bc1 | 1301 | static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes) |
1da177e4 LT |
1302 | { |
1303 | size_t xfer = 0; | |
1304 | ssize_t tmp; | |
6ac77bc1 | 1305 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1306 | |
9c323fcb | 1307 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
1308 | return -ENXIO; |
1309 | ||
1310 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) | |
1311 | return tmp; | |
e3a5d59a | 1312 | mutex_lock(&runtime->oss.params_lock); |
1da177e4 LT |
1313 | while (bytes > 0) { |
1314 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { | |
1315 | tmp = bytes; | |
1316 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) | |
1317 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; | |
1318 | if (tmp > 0) { | |
e3a5d59a TI |
1319 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) { |
1320 | tmp = -EFAULT; | |
1321 | goto err; | |
1322 | } | |
1da177e4 LT |
1323 | } |
1324 | runtime->oss.buffer_used += tmp; | |
1325 | buf += tmp; | |
1326 | bytes -= tmp; | |
1327 | xfer += tmp; | |
060d77b9 | 1328 | if (substream->oss.setup.partialfrag || |
1da177e4 LT |
1329 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
1330 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, | |
1331 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); | |
1332 | if (tmp <= 0) | |
e3a5d59a | 1333 | goto err; |
1da177e4 LT |
1334 | runtime->oss.bytes += tmp; |
1335 | runtime->oss.period_ptr += tmp; | |
1336 | runtime->oss.period_ptr %= runtime->oss.period_bytes; | |
1337 | if (runtime->oss.period_ptr == 0 || | |
1338 | runtime->oss.period_ptr == runtime->oss.buffer_used) | |
1339 | runtime->oss.buffer_used = 0; | |
e3a5d59a TI |
1340 | else if ((substream->f_flags & O_NONBLOCK) != 0) { |
1341 | tmp = -EAGAIN; | |
1342 | goto err; | |
1343 | } | |
1da177e4 LT |
1344 | } |
1345 | } else { | |
4d23359b CL |
1346 | tmp = snd_pcm_oss_write2(substream, |
1347 | (const char __force *)buf, | |
1348 | runtime->oss.period_bytes, 0); | |
1da177e4 | 1349 | if (tmp <= 0) |
e3a5d59a | 1350 | goto err; |
1da177e4 LT |
1351 | runtime->oss.bytes += tmp; |
1352 | buf += tmp; | |
1353 | bytes -= tmp; | |
1354 | xfer += tmp; | |
0df63e44 | 1355 | if ((substream->f_flags & O_NONBLOCK) != 0 && |
1da177e4 LT |
1356 | tmp != runtime->oss.period_bytes) |
1357 | break; | |
1358 | } | |
1359 | } | |
e3a5d59a | 1360 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 | 1361 | return xfer; |
e3a5d59a TI |
1362 | |
1363 | err: | |
1364 | mutex_unlock(&runtime->oss.params_lock); | |
1365 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
1da177e4 LT |
1366 | } |
1367 | ||
6ac77bc1 | 1368 | static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel) |
1da177e4 | 1369 | { |
6ac77bc1 | 1370 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1371 | snd_pcm_sframes_t frames, frames1; |
21a3479a | 1372 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
1373 | char __user *final_dst = (char __user *)buf; |
1374 | if (runtime->oss.plugin_first) { | |
6ac77bc1 | 1375 | struct snd_pcm_plugin_channel *channels; |
1da177e4 LT |
1376 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
1377 | if (!in_kernel) | |
1378 | buf = runtime->oss.buffer; | |
1379 | frames = bytes / oss_frame_bytes; | |
1380 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); | |
1381 | if (frames1 < 0) | |
1382 | return frames1; | |
1383 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); | |
1384 | if (frames1 <= 0) | |
1385 | return frames1; | |
1386 | bytes = frames1 * oss_frame_bytes; | |
1387 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) | |
1388 | return -EFAULT; | |
21a3479a JK |
1389 | } else |
1390 | #endif | |
1391 | { | |
1da177e4 LT |
1392 | frames = bytes_to_frames(runtime, bytes); |
1393 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); | |
1394 | if (frames1 <= 0) | |
1395 | return frames1; | |
1396 | bytes = frames_to_bytes(runtime, frames1); | |
1397 | } | |
1398 | return bytes; | |
1399 | } | |
1400 | ||
6ac77bc1 | 1401 | static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes) |
1da177e4 LT |
1402 | { |
1403 | size_t xfer = 0; | |
1404 | ssize_t tmp; | |
6ac77bc1 | 1405 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1406 | |
9c323fcb | 1407 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
1408 | return -ENXIO; |
1409 | ||
1410 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) | |
1411 | return tmp; | |
e3a5d59a | 1412 | mutex_lock(&runtime->oss.params_lock); |
1da177e4 LT |
1413 | while (bytes > 0) { |
1414 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { | |
1415 | if (runtime->oss.buffer_used == 0) { | |
1416 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); | |
1417 | if (tmp <= 0) | |
e3a5d59a | 1418 | goto err; |
1da177e4 LT |
1419 | runtime->oss.bytes += tmp; |
1420 | runtime->oss.period_ptr = tmp; | |
1421 | runtime->oss.buffer_used = tmp; | |
1422 | } | |
1423 | tmp = bytes; | |
1424 | if ((size_t) tmp > runtime->oss.buffer_used) | |
1425 | tmp = runtime->oss.buffer_used; | |
e3a5d59a TI |
1426 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) { |
1427 | tmp = -EFAULT; | |
1428 | goto err; | |
1429 | } | |
1da177e4 LT |
1430 | buf += tmp; |
1431 | bytes -= tmp; | |
1432 | xfer += tmp; | |
1433 | runtime->oss.buffer_used -= tmp; | |
1434 | } else { | |
4d23359b CL |
1435 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
1436 | runtime->oss.period_bytes, 0); | |
1da177e4 | 1437 | if (tmp <= 0) |
e3a5d59a | 1438 | goto err; |
1da177e4 LT |
1439 | runtime->oss.bytes += tmp; |
1440 | buf += tmp; | |
1441 | bytes -= tmp; | |
1442 | xfer += tmp; | |
1443 | } | |
1444 | } | |
e3a5d59a | 1445 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 | 1446 | return xfer; |
e3a5d59a TI |
1447 | |
1448 | err: | |
1449 | mutex_unlock(&runtime->oss.params_lock); | |
1450 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
1da177e4 LT |
1451 | } |
1452 | ||
6ac77bc1 | 1453 | static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1454 | { |
6ac77bc1 | 1455 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1456 | |
1457 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1458 | if (substream != NULL) { | |
bf1bbb5a | 1459 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
1da177e4 LT |
1460 | substream->runtime->oss.prepare = 1; |
1461 | } | |
1462 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1463 | if (substream != NULL) { | |
bf1bbb5a | 1464 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
1da177e4 LT |
1465 | substream->runtime->oss.prepare = 1; |
1466 | } | |
1467 | return 0; | |
1468 | } | |
1469 | ||
6ac77bc1 | 1470 | static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1471 | { |
6ac77bc1 | 1472 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1473 | int err; |
1474 | ||
1475 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1476 | if (substream != NULL) { | |
1477 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1478 | return err; | |
bf1bbb5a | 1479 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
1da177e4 LT |
1480 | } |
1481 | /* note: all errors from the start action are ignored */ | |
1482 | /* OSS apps do not know, how to handle them */ | |
1483 | return 0; | |
1484 | } | |
1485 | ||
6ac77bc1 | 1486 | static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size) |
1da177e4 | 1487 | { |
6ac77bc1 | 1488 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1489 | ssize_t result = 0; |
1490 | long res; | |
1491 | wait_queue_t wait; | |
1492 | ||
1493 | runtime = substream->runtime; | |
1494 | init_waitqueue_entry(&wait, current); | |
1495 | add_wait_queue(&runtime->sleep, &wait); | |
1496 | #ifdef OSS_DEBUG | |
1497 | printk("sync1: size = %li\n", size); | |
1498 | #endif | |
1499 | while (1) { | |
1500 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); | |
1501 | if (result > 0) { | |
1502 | runtime->oss.buffer_used = 0; | |
1503 | result = 0; | |
1504 | break; | |
1505 | } | |
1506 | if (result != 0 && result != -EAGAIN) | |
1507 | break; | |
1508 | result = 0; | |
1509 | set_current_state(TASK_INTERRUPTIBLE); | |
1510 | snd_pcm_stream_lock_irq(substream); | |
1511 | res = runtime->status->state; | |
1512 | snd_pcm_stream_unlock_irq(substream); | |
1513 | if (res != SNDRV_PCM_STATE_RUNNING) { | |
1514 | set_current_state(TASK_RUNNING); | |
1515 | break; | |
1516 | } | |
1517 | res = schedule_timeout(10 * HZ); | |
1518 | if (signal_pending(current)) { | |
1519 | result = -ERESTARTSYS; | |
1520 | break; | |
1521 | } | |
1522 | if (res == 0) { | |
1523 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); | |
1524 | result = -EIO; | |
1525 | break; | |
1526 | } | |
1527 | } | |
1528 | remove_wait_queue(&runtime->sleep, &wait); | |
1529 | return result; | |
1530 | } | |
1531 | ||
6ac77bc1 | 1532 | static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1533 | { |
1534 | int err = 0; | |
1535 | unsigned int saved_f_flags; | |
6ac77bc1 TI |
1536 | struct snd_pcm_substream *substream; |
1537 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1538 | snd_pcm_format_t format; |
1539 | unsigned long width; | |
1540 | size_t size; | |
1541 | ||
1542 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1543 | if (substream != NULL) { | |
1544 | runtime = substream->runtime; | |
9c323fcb | 1545 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
1546 | goto __direct; |
1547 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1548 | return err; | |
1549 | format = snd_pcm_oss_format_from(runtime->oss.format); | |
1550 | width = snd_pcm_format_physical_width(format); | |
e3a5d59a | 1551 | mutex_lock(&runtime->oss.params_lock); |
1da177e4 LT |
1552 | if (runtime->oss.buffer_used > 0) { |
1553 | #ifdef OSS_DEBUG | |
1554 | printk("sync: buffer_used\n"); | |
1555 | #endif | |
1556 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; | |
1557 | snd_pcm_format_set_silence(format, | |
1558 | runtime->oss.buffer + runtime->oss.buffer_used, | |
1559 | size); | |
1560 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); | |
e3a5d59a TI |
1561 | if (err < 0) { |
1562 | mutex_unlock(&runtime->oss.params_lock); | |
1da177e4 | 1563 | return err; |
e3a5d59a | 1564 | } |
1da177e4 LT |
1565 | } else if (runtime->oss.period_ptr > 0) { |
1566 | #ifdef OSS_DEBUG | |
1567 | printk("sync: period_ptr\n"); | |
1568 | #endif | |
1569 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; | |
1570 | snd_pcm_format_set_silence(format, | |
1571 | runtime->oss.buffer, | |
1572 | size * 8 / width); | |
1573 | err = snd_pcm_oss_sync1(substream, size); | |
e3a5d59a TI |
1574 | if (err < 0) { |
1575 | mutex_unlock(&runtime->oss.params_lock); | |
1da177e4 | 1576 | return err; |
e3a5d59a | 1577 | } |
1da177e4 LT |
1578 | } |
1579 | /* | |
1580 | * The ALSA's period might be a bit large than OSS one. | |
1581 | * Fill the remain portion of ALSA period with zeros. | |
1582 | */ | |
1583 | size = runtime->control->appl_ptr % runtime->period_size; | |
1584 | if (size > 0) { | |
1585 | size = runtime->period_size - size; | |
1586 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { | |
1587 | size = (runtime->frame_bits * size) / 8; | |
1588 | while (size > 0) { | |
1589 | mm_segment_t fs; | |
1590 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; | |
1591 | size -= size1; | |
1592 | size1 *= 8; | |
1593 | size1 /= runtime->sample_bits; | |
1594 | snd_pcm_format_set_silence(runtime->format, | |
1595 | runtime->oss.buffer, | |
1596 | size1); | |
1597 | fs = snd_enter_user(); | |
1598 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); | |
1599 | snd_leave_user(fs); | |
1600 | } | |
1601 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { | |
1602 | void __user *buffers[runtime->channels]; | |
1603 | memset(buffers, 0, runtime->channels * sizeof(void *)); | |
1604 | snd_pcm_lib_writev(substream, buffers, size); | |
1605 | } | |
1606 | } | |
e3a5d59a | 1607 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 LT |
1608 | /* |
1609 | * finish sync: drain the buffer | |
1610 | */ | |
1611 | __direct: | |
0df63e44 TI |
1612 | saved_f_flags = substream->f_flags; |
1613 | substream->f_flags &= ~O_NONBLOCK; | |
bf1bbb5a | 1614 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
0df63e44 | 1615 | substream->f_flags = saved_f_flags; |
1da177e4 LT |
1616 | if (err < 0) |
1617 | return err; | |
1618 | runtime->oss.prepare = 1; | |
1619 | } | |
1620 | ||
1621 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1622 | if (substream != NULL) { | |
1623 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1624 | return err; | |
1625 | runtime = substream->runtime; | |
bf1bbb5a | 1626 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
1da177e4 LT |
1627 | if (err < 0) |
1628 | return err; | |
1629 | runtime->oss.buffer_used = 0; | |
1630 | runtime->oss.prepare = 1; | |
1631 | } | |
1632 | return 0; | |
1633 | } | |
1634 | ||
6ac77bc1 | 1635 | static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate) |
1da177e4 LT |
1636 | { |
1637 | int idx; | |
1638 | ||
1639 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1640 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1641 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1642 | if (substream == NULL) |
1643 | continue; | |
1644 | runtime = substream->runtime; | |
1645 | if (rate < 1000) | |
1646 | rate = 1000; | |
1647 | else if (rate > 192000) | |
1648 | rate = 192000; | |
1649 | if (runtime->oss.rate != rate) { | |
1650 | runtime->oss.params = 1; | |
1651 | runtime->oss.rate = rate; | |
1652 | } | |
1653 | } | |
1654 | return snd_pcm_oss_get_rate(pcm_oss_file); | |
1655 | } | |
1656 | ||
6ac77bc1 | 1657 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1658 | { |
6ac77bc1 | 1659 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1660 | int err; |
1661 | ||
1662 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1663 | return err; | |
1664 | return substream->runtime->oss.rate; | |
1665 | } | |
1666 | ||
6ac77bc1 | 1667 | static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels) |
1da177e4 LT |
1668 | { |
1669 | int idx; | |
1670 | if (channels < 1) | |
1671 | channels = 1; | |
1672 | if (channels > 128) | |
1673 | return -EINVAL; | |
1674 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1675 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1676 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1677 | if (substream == NULL) |
1678 | continue; | |
1679 | runtime = substream->runtime; | |
1680 | if (runtime->oss.channels != channels) { | |
1681 | runtime->oss.params = 1; | |
1682 | runtime->oss.channels = channels; | |
1683 | } | |
1684 | } | |
1685 | return snd_pcm_oss_get_channels(pcm_oss_file); | |
1686 | } | |
1687 | ||
6ac77bc1 | 1688 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1689 | { |
6ac77bc1 | 1690 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1691 | int err; |
1692 | ||
1693 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1694 | return err; | |
1695 | return substream->runtime->oss.channels; | |
1696 | } | |
1697 | ||
6ac77bc1 | 1698 | static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1699 | { |
6ac77bc1 | 1700 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1701 | int err; |
1702 | ||
1703 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1704 | return err; | |
1705 | return substream->runtime->oss.period_bytes; | |
1706 | } | |
1707 | ||
6ac77bc1 | 1708 | static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1709 | { |
6ac77bc1 | 1710 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1711 | int err; |
1712 | int direct; | |
6ac77bc1 | 1713 | struct snd_pcm_hw_params *params; |
1da177e4 | 1714 | unsigned int formats = 0; |
6ac77bc1 | 1715 | struct snd_mask format_mask; |
1da177e4 LT |
1716 | int fmt; |
1717 | ||
1718 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1719 | return err; | |
9c323fcb | 1720 | if (atomic_read(&substream->mmap_count)) |
1da177e4 | 1721 | direct = 1; |
060d77b9 TI |
1722 | else |
1723 | direct = substream->oss.setup.direct; | |
1da177e4 LT |
1724 | if (!direct) |
1725 | return AFMT_MU_LAW | AFMT_U8 | | |
1726 | AFMT_S16_LE | AFMT_S16_BE | | |
1727 | AFMT_S8 | AFMT_U16_LE | | |
1728 | AFMT_U16_BE; | |
1729 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
1730 | if (!params) | |
1731 | return -ENOMEM; | |
1732 | _snd_pcm_hw_params_any(params); | |
1733 | err = snd_pcm_hw_refine(substream, params); | |
1734 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1735 | kfree(params); | |
1736 | snd_assert(err >= 0, return err); | |
1737 | for (fmt = 0; fmt < 32; ++fmt) { | |
1738 | if (snd_mask_test(&format_mask, fmt)) { | |
1739 | int f = snd_pcm_oss_format_to(fmt); | |
1740 | if (f >= 0) | |
1741 | formats |= f; | |
1742 | } | |
1743 | } | |
1744 | return formats; | |
1745 | } | |
1746 | ||
6ac77bc1 | 1747 | static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format) |
1da177e4 LT |
1748 | { |
1749 | int formats, idx; | |
1750 | ||
1751 | if (format != AFMT_QUERY) { | |
1752 | formats = snd_pcm_oss_get_formats(pcm_oss_file); | |
5c59e09d SF |
1753 | if (formats < 0) |
1754 | return formats; | |
1da177e4 LT |
1755 | if (!(formats & format)) |
1756 | format = AFMT_U8; | |
1757 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1758 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1759 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1760 | if (substream == NULL) |
1761 | continue; | |
1762 | runtime = substream->runtime; | |
1763 | if (runtime->oss.format != format) { | |
1764 | runtime->oss.params = 1; | |
1765 | runtime->oss.format = format; | |
1766 | } | |
1767 | } | |
1768 | } | |
1769 | return snd_pcm_oss_get_format(pcm_oss_file); | |
1770 | } | |
1771 | ||
6ac77bc1 | 1772 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1773 | { |
6ac77bc1 | 1774 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1775 | int err; |
1776 | ||
1777 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1778 | return err; | |
1779 | return substream->runtime->oss.format; | |
1780 | } | |
1781 | ||
6ac77bc1 | 1782 | static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide) |
1da177e4 | 1783 | { |
6ac77bc1 | 1784 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1785 | |
1786 | if (substream == NULL) | |
1787 | return 0; | |
1788 | runtime = substream->runtime; | |
1789 | if (subdivide == 0) { | |
1790 | subdivide = runtime->oss.subdivision; | |
1791 | if (subdivide == 0) | |
1792 | subdivide = 1; | |
1793 | return subdivide; | |
1794 | } | |
1795 | if (runtime->oss.subdivision || runtime->oss.fragshift) | |
1796 | return -EINVAL; | |
1797 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && | |
1798 | subdivide != 8 && subdivide != 16) | |
1799 | return -EINVAL; | |
1800 | runtime->oss.subdivision = subdivide; | |
1801 | runtime->oss.params = 1; | |
1802 | return subdivide; | |
1803 | } | |
1804 | ||
6ac77bc1 | 1805 | static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide) |
1da177e4 LT |
1806 | { |
1807 | int err = -EINVAL, idx; | |
1808 | ||
1809 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 | 1810 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1811 | if (substream == NULL) |
1812 | continue; | |
1813 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) | |
1814 | return err; | |
1815 | } | |
1816 | return err; | |
1817 | } | |
1818 | ||
6ac77bc1 | 1819 | static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val) |
1da177e4 | 1820 | { |
6ac77bc1 | 1821 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1822 | |
1823 | if (substream == NULL) | |
1824 | return 0; | |
1825 | runtime = substream->runtime; | |
1826 | if (runtime->oss.subdivision || runtime->oss.fragshift) | |
1827 | return -EINVAL; | |
1828 | runtime->oss.fragshift = val & 0xffff; | |
1829 | runtime->oss.maxfrags = (val >> 16) & 0xffff; | |
1830 | if (runtime->oss.fragshift < 4) /* < 16 */ | |
1831 | runtime->oss.fragshift = 4; | |
1832 | if (runtime->oss.maxfrags < 2) | |
1833 | runtime->oss.maxfrags = 2; | |
1834 | runtime->oss.params = 1; | |
1835 | return 0; | |
1836 | } | |
1837 | ||
6ac77bc1 | 1838 | static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val) |
1da177e4 LT |
1839 | { |
1840 | int err = -EINVAL, idx; | |
1841 | ||
1842 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 | 1843 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1844 | if (substream == NULL) |
1845 | continue; | |
1846 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) | |
1847 | return err; | |
1848 | } | |
1849 | return err; | |
1850 | } | |
1851 | ||
1852 | static int snd_pcm_oss_nonblock(struct file * file) | |
1853 | { | |
1854 | file->f_flags |= O_NONBLOCK; | |
1855 | return 0; | |
1856 | } | |
1857 | ||
6ac77bc1 | 1858 | static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res) |
1da177e4 LT |
1859 | { |
1860 | ||
1861 | if (substream == NULL) { | |
1862 | res &= ~DSP_CAP_DUPLEX; | |
1863 | return res; | |
1864 | } | |
1865 | #ifdef DSP_CAP_MULTI | |
1866 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1867 | if (substream->pstr->substream_count > 1) | |
1868 | res |= DSP_CAP_MULTI; | |
1869 | #endif | |
1870 | /* DSP_CAP_REALTIME is set all times: */ | |
1871 | /* all ALSA drivers can return actual pointer in ring buffer */ | |
1872 | #if defined(DSP_CAP_REALTIME) && 0 | |
1873 | { | |
6ac77bc1 | 1874 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1875 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
1876 | res &= ~DSP_CAP_REALTIME; | |
1877 | } | |
1878 | #endif | |
1879 | return res; | |
1880 | } | |
1881 | ||
6ac77bc1 | 1882 | static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1883 | { |
1884 | int result, idx; | |
1885 | ||
1886 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; | |
1887 | for (idx = 0; idx < 2; idx++) { | |
6ac77bc1 | 1888 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1889 | result = snd_pcm_oss_get_caps1(substream, result); |
1890 | } | |
1891 | result |= 0x0001; /* revision - same as SB AWE 64 */ | |
1892 | return result; | |
1893 | } | |
1894 | ||
6ac77bc1 | 1895 | static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr) |
1da177e4 | 1896 | { |
6ac77bc1 | 1897 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1898 | snd_pcm_uframes_t appl_ptr; |
1899 | appl_ptr = hw_ptr + runtime->buffer_size; | |
1900 | appl_ptr %= runtime->boundary; | |
1901 | runtime->control->appl_ptr = appl_ptr; | |
1902 | } | |
1903 | ||
6ac77bc1 | 1904 | static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger) |
1da177e4 | 1905 | { |
6ac77bc1 TI |
1906 | struct snd_pcm_runtime *runtime; |
1907 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; | |
1da177e4 LT |
1908 | int err, cmd; |
1909 | ||
1910 | #ifdef OSS_DEBUG | |
1911 | printk("pcm_oss: trigger = 0x%x\n", trigger); | |
1912 | #endif | |
1913 | ||
1914 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1915 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1916 | ||
1917 | if (psubstream) { | |
1918 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) | |
1919 | return err; | |
1920 | } | |
1921 | if (csubstream) { | |
1922 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) | |
1923 | return err; | |
1924 | } | |
1925 | if (psubstream) { | |
1926 | runtime = psubstream->runtime; | |
1927 | if (trigger & PCM_ENABLE_OUTPUT) { | |
1928 | if (runtime->oss.trigger) | |
1929 | goto _skip1; | |
9c323fcb | 1930 | if (atomic_read(&psubstream->mmap_count)) |
1da177e4 LT |
1931 | snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); |
1932 | runtime->oss.trigger = 1; | |
1933 | runtime->start_threshold = 1; | |
1934 | cmd = SNDRV_PCM_IOCTL_START; | |
1935 | } else { | |
1936 | if (!runtime->oss.trigger) | |
1937 | goto _skip1; | |
1938 | runtime->oss.trigger = 0; | |
1939 | runtime->start_threshold = runtime->boundary; | |
1940 | cmd = SNDRV_PCM_IOCTL_DROP; | |
1941 | runtime->oss.prepare = 1; | |
1942 | } | |
bf1bbb5a | 1943 | err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL); |
1da177e4 LT |
1944 | if (err < 0) |
1945 | return err; | |
1946 | } | |
1947 | _skip1: | |
1948 | if (csubstream) { | |
1949 | runtime = csubstream->runtime; | |
1950 | if (trigger & PCM_ENABLE_INPUT) { | |
1951 | if (runtime->oss.trigger) | |
1952 | goto _skip2; | |
1953 | runtime->oss.trigger = 1; | |
1954 | runtime->start_threshold = 1; | |
1955 | cmd = SNDRV_PCM_IOCTL_START; | |
1956 | } else { | |
1957 | if (!runtime->oss.trigger) | |
1958 | goto _skip2; | |
1959 | runtime->oss.trigger = 0; | |
1960 | runtime->start_threshold = runtime->boundary; | |
1961 | cmd = SNDRV_PCM_IOCTL_DROP; | |
1962 | runtime->oss.prepare = 1; | |
1963 | } | |
bf1bbb5a | 1964 | err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL); |
1da177e4 LT |
1965 | if (err < 0) |
1966 | return err; | |
1967 | } | |
1968 | _skip2: | |
1969 | return 0; | |
1970 | } | |
1971 | ||
6ac77bc1 | 1972 | static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1973 | { |
6ac77bc1 | 1974 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
1da177e4 LT |
1975 | int result = 0; |
1976 | ||
1977 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1978 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1979 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) | |
1980 | result |= PCM_ENABLE_OUTPUT; | |
1981 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) | |
1982 | result |= PCM_ENABLE_INPUT; | |
1983 | return result; | |
1984 | } | |
1985 | ||
6ac77bc1 | 1986 | static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1987 | { |
6ac77bc1 TI |
1988 | struct snd_pcm_substream *substream; |
1989 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1990 | snd_pcm_sframes_t delay; |
1991 | int err; | |
1992 | ||
1993 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1994 | if (substream == NULL) | |
1995 | return -EINVAL; | |
1996 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1997 | return err; | |
1998 | runtime = substream->runtime; | |
1999 | if (runtime->oss.params || runtime->oss.prepare) | |
2000 | return 0; | |
bf1bbb5a | 2001 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
1da177e4 LT |
2002 | if (err == -EPIPE) |
2003 | delay = 0; /* hack for broken OSS applications */ | |
2004 | else if (err < 0) | |
2005 | return err; | |
2006 | return snd_pcm_oss_bytes(substream, delay); | |
2007 | } | |
2008 | ||
6ac77bc1 | 2009 | static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info) |
1da177e4 | 2010 | { |
6ac77bc1 TI |
2011 | struct snd_pcm_substream *substream; |
2012 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2013 | snd_pcm_sframes_t delay; |
2014 | int fixup; | |
2015 | struct count_info info; | |
2016 | int err; | |
2017 | ||
2018 | if (_info == NULL) | |
2019 | return -EFAULT; | |
2020 | substream = pcm_oss_file->streams[stream]; | |
2021 | if (substream == NULL) | |
2022 | return -EINVAL; | |
2023 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
2024 | return err; | |
2025 | runtime = substream->runtime; | |
2026 | if (runtime->oss.params || runtime->oss.prepare) { | |
2027 | memset(&info, 0, sizeof(info)); | |
2028 | if (copy_to_user(_info, &info, sizeof(info))) | |
2029 | return -EFAULT; | |
2030 | return 0; | |
2031 | } | |
2032 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
2033 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); | |
2034 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { | |
2035 | err = 0; | |
2036 | delay = 0; | |
2037 | fixup = 0; | |
2038 | } else { | |
2039 | fixup = runtime->oss.buffer_used; | |
2040 | } | |
2041 | } else { | |
2042 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); | |
2043 | fixup = -runtime->oss.buffer_used; | |
2044 | } | |
2045 | if (err < 0) | |
2046 | return err; | |
2047 | info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size); | |
9c323fcb | 2048 | if (atomic_read(&substream->mmap_count)) { |
1da177e4 LT |
2049 | snd_pcm_sframes_t n; |
2050 | n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; | |
2051 | if (n < 0) | |
2052 | n += runtime->boundary; | |
2053 | info.blocks = n / runtime->period_size; | |
2054 | runtime->oss.prev_hw_ptr_interrupt = delay; | |
2055 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2056 | snd_pcm_oss_simulate_fill(substream, delay); | |
2057 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; | |
2058 | } else { | |
5ac0fab9 | 2059 | delay = snd_pcm_oss_bytes(substream, delay); |
fb4bd0ad | 2060 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
060d77b9 | 2061 | if (substream->oss.setup.buggyptr) |
10f69f9e TI |
2062 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
2063 | else | |
2064 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; | |
1da177e4 | 2065 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
fb4bd0ad | 2066 | } else { |
5ac0fab9 JK |
2067 | delay += fixup; |
2068 | info.blocks = delay / runtime->oss.period_bytes; | |
1da177e4 | 2069 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
fb4bd0ad | 2070 | } |
1da177e4 LT |
2071 | } |
2072 | if (copy_to_user(_info, &info, sizeof(info))) | |
2073 | return -EFAULT; | |
2074 | return 0; | |
2075 | } | |
2076 | ||
6ac77bc1 | 2077 | static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info) |
1da177e4 | 2078 | { |
6ac77bc1 TI |
2079 | struct snd_pcm_substream *substream; |
2080 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2081 | snd_pcm_sframes_t avail; |
2082 | int fixup; | |
2083 | struct audio_buf_info info; | |
2084 | int err; | |
2085 | ||
2086 | if (_info == NULL) | |
2087 | return -EFAULT; | |
2088 | substream = pcm_oss_file->streams[stream]; | |
2089 | if (substream == NULL) | |
2090 | return -EINVAL; | |
2091 | runtime = substream->runtime; | |
2092 | ||
2093 | if (runtime->oss.params && | |
2094 | (err = snd_pcm_oss_change_params(substream)) < 0) | |
2095 | return err; | |
2096 | ||
2097 | info.fragsize = runtime->oss.period_bytes; | |
2098 | info.fragstotal = runtime->periods; | |
2099 | if (runtime->oss.prepare) { | |
2100 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
2101 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; | |
2102 | info.fragments = runtime->oss.periods; | |
2103 | } else { | |
2104 | info.bytes = 0; | |
2105 | info.fragments = 0; | |
2106 | } | |
2107 | } else { | |
2108 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
2109 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); | |
2110 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { | |
2111 | avail = runtime->buffer_size; | |
2112 | err = 0; | |
2113 | fixup = 0; | |
2114 | } else { | |
2115 | avail = runtime->buffer_size - avail; | |
2116 | fixup = -runtime->oss.buffer_used; | |
2117 | } | |
2118 | } else { | |
2119 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); | |
2120 | fixup = runtime->oss.buffer_used; | |
2121 | } | |
2122 | if (err < 0) | |
2123 | return err; | |
2124 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; | |
2125 | info.fragments = info.bytes / runtime->oss.period_bytes; | |
2126 | } | |
2127 | ||
2128 | #ifdef OSS_DEBUG | |
2129 | printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); | |
2130 | #endif | |
2131 | if (copy_to_user(_info, &info, sizeof(info))) | |
2132 | return -EFAULT; | |
2133 | return 0; | |
2134 | } | |
2135 | ||
6ac77bc1 | 2136 | static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info) |
1da177e4 LT |
2137 | { |
2138 | // it won't be probably implemented | |
2139 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); | |
2140 | return -EINVAL; | |
2141 | } | |
2142 | ||
060d77b9 | 2143 | static const char *strip_task_path(const char *path) |
1da177e4 | 2144 | { |
060d77b9 TI |
2145 | const char *ptr, *ptrl = NULL; |
2146 | for (ptr = path; *ptr; ptr++) { | |
1da177e4 LT |
2147 | if (*ptr == '/') |
2148 | ptrl = ptr + 1; | |
1da177e4 | 2149 | } |
060d77b9 TI |
2150 | return ptrl; |
2151 | } | |
2152 | ||
2153 | static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, | |
2154 | const char *task_name, | |
2155 | struct snd_pcm_oss_setup *rsetup) | |
2156 | { | |
2157 | struct snd_pcm_oss_setup *setup; | |
2158 | ||
2159 | mutex_lock(&pcm->streams[stream].oss.setup_mutex); | |
2160 | do { | |
2161 | for (setup = pcm->streams[stream].oss.setup_list; setup; | |
2162 | setup = setup->next) { | |
2163 | if (!strcmp(setup->task_name, task_name)) | |
2164 | goto out; | |
1da177e4 | 2165 | } |
060d77b9 TI |
2166 | } while ((task_name = strip_task_path(task_name)) != NULL); |
2167 | out: | |
2168 | if (setup) | |
2169 | *rsetup = *setup; | |
1a60d4c5 | 2170 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
1da177e4 LT |
2171 | } |
2172 | ||
3bf75f9b TI |
2173 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
2174 | { | |
2175 | struct snd_pcm_runtime *runtime; | |
2176 | runtime = substream->runtime; | |
2177 | vfree(runtime->oss.buffer); | |
2178 | runtime->oss.buffer = NULL; | |
2179 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS | |
2180 | snd_pcm_oss_plugin_clear(substream); | |
2181 | #endif | |
2182 | substream->oss.oss = 0; | |
2183 | } | |
2184 | ||
6ac77bc1 TI |
2185 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
2186 | struct snd_pcm_oss_setup *setup, | |
1da177e4 LT |
2187 | int minor) |
2188 | { | |
6ac77bc1 | 2189 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
2190 | |
2191 | substream->oss.oss = 1; | |
060d77b9 | 2192 | substream->oss.setup = *setup; |
3bf75f9b | 2193 | if (setup->nonblock) |
0df63e44 | 2194 | substream->f_flags |= O_NONBLOCK; |
1576274d | 2195 | else if (setup->block) |
0df63e44 | 2196 | substream->f_flags &= ~O_NONBLOCK; |
1da177e4 LT |
2197 | runtime = substream->runtime; |
2198 | runtime->oss.params = 1; | |
2199 | runtime->oss.trigger = 1; | |
2200 | runtime->oss.rate = 8000; | |
e3a5d59a | 2201 | mutex_init(&runtime->oss.params_lock); |
1da177e4 LT |
2202 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { |
2203 | case SNDRV_MINOR_OSS_PCM_8: | |
2204 | runtime->oss.format = AFMT_U8; | |
2205 | break; | |
2206 | case SNDRV_MINOR_OSS_PCM_16: | |
2207 | runtime->oss.format = AFMT_S16_LE; | |
2208 | break; | |
2209 | default: | |
2210 | runtime->oss.format = AFMT_MU_LAW; | |
2211 | } | |
2212 | runtime->oss.channels = 1; | |
2213 | runtime->oss.fragshift = 0; | |
2214 | runtime->oss.maxfrags = 0; | |
2215 | runtime->oss.subdivision = 0; | |
3bf75f9b | 2216 | substream->pcm_release = snd_pcm_oss_release_substream; |
1da177e4 LT |
2217 | } |
2218 | ||
6ac77bc1 | 2219 | static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
2220 | { |
2221 | int cidx; | |
2222 | snd_assert(pcm_oss_file != NULL, return -ENXIO); | |
2223 | for (cidx = 0; cidx < 2; ++cidx) { | |
6ac77bc1 | 2224 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
3bf75f9b TI |
2225 | if (substream) |
2226 | snd_pcm_release_substream(substream); | |
1da177e4 LT |
2227 | } |
2228 | kfree(pcm_oss_file); | |
2229 | return 0; | |
2230 | } | |
2231 | ||
2232 | static int snd_pcm_oss_open_file(struct file *file, | |
6ac77bc1 TI |
2233 | struct snd_pcm *pcm, |
2234 | struct snd_pcm_oss_file **rpcm_oss_file, | |
1da177e4 | 2235 | int minor, |
060d77b9 | 2236 | struct snd_pcm_oss_setup *setup) |
1da177e4 | 2237 | { |
3bf75f9b | 2238 | int idx, err; |
6ac77bc1 | 2239 | struct snd_pcm_oss_file *pcm_oss_file; |
3bf75f9b | 2240 | struct snd_pcm_substream *substream; |
1da177e4 LT |
2241 | unsigned int f_mode = file->f_mode; |
2242 | ||
2243 | snd_assert(rpcm_oss_file != NULL, return -EINVAL); | |
2244 | *rpcm_oss_file = NULL; | |
2245 | ||
ca2c0966 | 2246 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
1da177e4 LT |
2247 | if (pcm_oss_file == NULL) |
2248 | return -ENOMEM; | |
2249 | ||
2250 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && | |
2251 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) | |
2252 | f_mode = FMODE_WRITE; | |
3bf75f9b | 2253 | |
0df63e44 | 2254 | file->f_flags &= ~O_APPEND; |
3bf75f9b | 2255 | for (idx = 0; idx < 2; idx++) { |
060d77b9 | 2256 | if (setup[idx].disable) |
3bf75f9b | 2257 | continue; |
6cb53e7e TI |
2258 | if (! pcm->streams[idx].substream_count) |
2259 | continue; /* no matching substream */ | |
3bf75f9b TI |
2260 | if (idx == SNDRV_PCM_STREAM_PLAYBACK) { |
2261 | if (! (f_mode & FMODE_WRITE)) | |
2262 | continue; | |
2263 | } else { | |
2264 | if (! (f_mode & FMODE_READ)) | |
2265 | continue; | |
2266 | } | |
2267 | err = snd_pcm_open_substream(pcm, idx, file, &substream); | |
2268 | if (err < 0) { | |
1da177e4 LT |
2269 | snd_pcm_oss_release_file(pcm_oss_file); |
2270 | return err; | |
2271 | } | |
3bf75f9b TI |
2272 | |
2273 | pcm_oss_file->streams[idx] = substream; | |
1576274d | 2274 | substream->file = pcm_oss_file; |
060d77b9 | 2275 | snd_pcm_oss_init_substream(substream, &setup[idx], minor); |
1da177e4 LT |
2276 | } |
2277 | ||
bbdc1b7d | 2278 | if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) { |
1da177e4 LT |
2279 | snd_pcm_oss_release_file(pcm_oss_file); |
2280 | return -EINVAL; | |
2281 | } | |
1da177e4 LT |
2282 | |
2283 | file->private_data = pcm_oss_file; | |
2284 | *rpcm_oss_file = pcm_oss_file; | |
2285 | return 0; | |
2286 | } | |
2287 | ||
2288 | ||
93f2e378 TI |
2289 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
2290 | { | |
2291 | unsigned int idx; | |
2292 | ||
2293 | snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL); | |
2294 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) | |
2295 | name[idx] = task->comm[idx]; | |
2296 | name[idx] = '\0'; | |
2297 | return 0; | |
2298 | } | |
2299 | ||
1da177e4 LT |
2300 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
2301 | { | |
1da177e4 LT |
2302 | int err; |
2303 | char task_name[32]; | |
6ac77bc1 TI |
2304 | struct snd_pcm *pcm; |
2305 | struct snd_pcm_oss_file *pcm_oss_file; | |
060d77b9 | 2306 | struct snd_pcm_oss_setup setup[2]; |
1da177e4 LT |
2307 | int nonblock; |
2308 | wait_queue_t wait; | |
2309 | ||
f87135f5 CL |
2310 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
2311 | SNDRV_OSS_DEVICE_TYPE_PCM); | |
1da177e4 LT |
2312 | if (pcm == NULL) { |
2313 | err = -ENODEV; | |
2314 | goto __error1; | |
2315 | } | |
2316 | err = snd_card_file_add(pcm->card, file); | |
2317 | if (err < 0) | |
2318 | goto __error1; | |
2319 | if (!try_module_get(pcm->card->module)) { | |
2320 | err = -EFAULT; | |
2321 | goto __error2; | |
2322 | } | |
2323 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { | |
2324 | err = -EFAULT; | |
2325 | goto __error; | |
2326 | } | |
1576274d | 2327 | memset(setup, 0, sizeof(setup)); |
1da177e4 | 2328 | if (file->f_mode & FMODE_WRITE) |
060d77b9 TI |
2329 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
2330 | task_name, &setup[0]); | |
1da177e4 | 2331 | if (file->f_mode & FMODE_READ) |
060d77b9 TI |
2332 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, |
2333 | task_name, &setup[1]); | |
1da177e4 LT |
2334 | |
2335 | nonblock = !!(file->f_flags & O_NONBLOCK); | |
1da177e4 LT |
2336 | if (!nonblock) |
2337 | nonblock = nonblock_open; | |
2338 | ||
2339 | init_waitqueue_entry(&wait, current); | |
2340 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2341 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2342 | while (1) { |
2343 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, | |
3bf75f9b | 2344 | iminor(inode), setup); |
1da177e4 LT |
2345 | if (err >= 0) |
2346 | break; | |
2347 | if (err == -EAGAIN) { | |
2348 | if (nonblock) { | |
2349 | err = -EBUSY; | |
2350 | break; | |
2351 | } | |
2352 | } else | |
2353 | break; | |
2354 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2355 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2356 | schedule(); |
1a60d4c5 | 2357 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2358 | if (signal_pending(current)) { |
2359 | err = -ERESTARTSYS; | |
2360 | break; | |
2361 | } | |
2362 | } | |
2363 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2364 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2365 | if (err < 0) |
2366 | goto __error; | |
2367 | return err; | |
2368 | ||
2369 | __error: | |
2370 | module_put(pcm->card->module); | |
2371 | __error2: | |
2372 | snd_card_file_remove(pcm->card, file); | |
2373 | __error1: | |
2374 | return err; | |
2375 | } | |
2376 | ||
2377 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) | |
2378 | { | |
6ac77bc1 TI |
2379 | struct snd_pcm *pcm; |
2380 | struct snd_pcm_substream *substream; | |
2381 | struct snd_pcm_oss_file *pcm_oss_file; | |
1da177e4 LT |
2382 | |
2383 | pcm_oss_file = file->private_data; | |
2384 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2385 | if (substream == NULL) | |
2386 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2387 | snd_assert(substream != NULL, return -ENXIO); | |
2388 | pcm = substream->pcm; | |
de1b8b93 TI |
2389 | if (!pcm->card->shutdown) |
2390 | snd_pcm_oss_sync(pcm_oss_file); | |
1a60d4c5 | 2391 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2392 | snd_pcm_oss_release_file(pcm_oss_file); |
1a60d4c5 | 2393 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2394 | wake_up(&pcm->open_wait); |
2395 | module_put(pcm->card->module); | |
2396 | snd_card_file_remove(pcm->card, file); | |
2397 | return 0; | |
2398 | } | |
2399 | ||
2400 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2401 | { | |
6ac77bc1 | 2402 | struct snd_pcm_oss_file *pcm_oss_file; |
1da177e4 LT |
2403 | int __user *p = (int __user *)arg; |
2404 | int res; | |
2405 | ||
2406 | pcm_oss_file = file->private_data; | |
2407 | if (cmd == OSS_GETVERSION) | |
2408 | return put_user(SNDRV_OSS_VERSION, p); | |
2409 | if (cmd == OSS_ALSAEMULVER) | |
2410 | return put_user(1, p); | |
2411 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) | |
2412 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ | |
6ac77bc1 | 2413 | struct snd_pcm_substream *substream; |
1da177e4 LT |
2414 | int idx; |
2415 | for (idx = 0; idx < 2; ++idx) { | |
2416 | substream = pcm_oss_file->streams[idx]; | |
2417 | if (substream != NULL) | |
2418 | break; | |
2419 | } | |
2420 | snd_assert(substream != NULL, return -ENXIO); | |
2421 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); | |
2422 | } | |
2423 | #endif | |
2424 | if (((cmd >> 8) & 0xff) != 'P') | |
2425 | return -EINVAL; | |
2426 | #ifdef OSS_DEBUG | |
2427 | printk("pcm_oss: ioctl = 0x%x\n", cmd); | |
2428 | #endif | |
2429 | switch (cmd) { | |
2430 | case SNDCTL_DSP_RESET: | |
2431 | return snd_pcm_oss_reset(pcm_oss_file); | |
2432 | case SNDCTL_DSP_SYNC: | |
2433 | return snd_pcm_oss_sync(pcm_oss_file); | |
2434 | case SNDCTL_DSP_SPEED: | |
2435 | if (get_user(res, p)) | |
2436 | return -EFAULT; | |
2437 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) | |
2438 | return res; | |
2439 | return put_user(res, p); | |
2440 | case SOUND_PCM_READ_RATE: | |
2441 | res = snd_pcm_oss_get_rate(pcm_oss_file); | |
2442 | if (res < 0) | |
2443 | return res; | |
2444 | return put_user(res, p); | |
2445 | case SNDCTL_DSP_STEREO: | |
2446 | if (get_user(res, p)) | |
2447 | return -EFAULT; | |
2448 | res = res > 0 ? 2 : 1; | |
2449 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) | |
2450 | return res; | |
2451 | return put_user(--res, p); | |
2452 | case SNDCTL_DSP_GETBLKSIZE: | |
2453 | res = snd_pcm_oss_get_block_size(pcm_oss_file); | |
2454 | if (res < 0) | |
2455 | return res; | |
2456 | return put_user(res, p); | |
2457 | case SNDCTL_DSP_SETFMT: | |
2458 | if (get_user(res, p)) | |
2459 | return -EFAULT; | |
2460 | res = snd_pcm_oss_set_format(pcm_oss_file, res); | |
2461 | if (res < 0) | |
2462 | return res; | |
2463 | return put_user(res, p); | |
2464 | case SOUND_PCM_READ_BITS: | |
2465 | res = snd_pcm_oss_get_format(pcm_oss_file); | |
2466 | if (res < 0) | |
2467 | return res; | |
2468 | return put_user(res, p); | |
2469 | case SNDCTL_DSP_CHANNELS: | |
2470 | if (get_user(res, p)) | |
2471 | return -EFAULT; | |
2472 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); | |
2473 | if (res < 0) | |
2474 | return res; | |
2475 | return put_user(res, p); | |
2476 | case SOUND_PCM_READ_CHANNELS: | |
2477 | res = snd_pcm_oss_get_channels(pcm_oss_file); | |
2478 | if (res < 0) | |
2479 | return res; | |
2480 | return put_user(res, p); | |
2481 | case SOUND_PCM_WRITE_FILTER: | |
2482 | case SOUND_PCM_READ_FILTER: | |
2483 | return -EIO; | |
2484 | case SNDCTL_DSP_POST: | |
2485 | return snd_pcm_oss_post(pcm_oss_file); | |
2486 | case SNDCTL_DSP_SUBDIVIDE: | |
2487 | if (get_user(res, p)) | |
2488 | return -EFAULT; | |
2489 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); | |
2490 | if (res < 0) | |
2491 | return res; | |
2492 | return put_user(res, p); | |
2493 | case SNDCTL_DSP_SETFRAGMENT: | |
2494 | if (get_user(res, p)) | |
2495 | return -EFAULT; | |
2496 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); | |
2497 | case SNDCTL_DSP_GETFMTS: | |
2498 | res = snd_pcm_oss_get_formats(pcm_oss_file); | |
2499 | if (res < 0) | |
2500 | return res; | |
2501 | return put_user(res, p); | |
2502 | case SNDCTL_DSP_GETOSPACE: | |
2503 | case SNDCTL_DSP_GETISPACE: | |
2504 | return snd_pcm_oss_get_space(pcm_oss_file, | |
2505 | cmd == SNDCTL_DSP_GETISPACE ? | |
2506 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2507 | (struct audio_buf_info __user *) arg); | |
2508 | case SNDCTL_DSP_NONBLOCK: | |
2509 | return snd_pcm_oss_nonblock(file); | |
2510 | case SNDCTL_DSP_GETCAPS: | |
2511 | res = snd_pcm_oss_get_caps(pcm_oss_file); | |
2512 | if (res < 0) | |
2513 | return res; | |
2514 | return put_user(res, p); | |
2515 | case SNDCTL_DSP_GETTRIGGER: | |
2516 | res = snd_pcm_oss_get_trigger(pcm_oss_file); | |
2517 | if (res < 0) | |
2518 | return res; | |
2519 | return put_user(res, p); | |
2520 | case SNDCTL_DSP_SETTRIGGER: | |
2521 | if (get_user(res, p)) | |
2522 | return -EFAULT; | |
2523 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); | |
2524 | case SNDCTL_DSP_GETIPTR: | |
2525 | case SNDCTL_DSP_GETOPTR: | |
2526 | return snd_pcm_oss_get_ptr(pcm_oss_file, | |
2527 | cmd == SNDCTL_DSP_GETIPTR ? | |
2528 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2529 | (struct count_info __user *) arg); | |
2530 | case SNDCTL_DSP_MAPINBUF: | |
2531 | case SNDCTL_DSP_MAPOUTBUF: | |
2532 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, | |
2533 | cmd == SNDCTL_DSP_MAPINBUF ? | |
2534 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2535 | (struct buffmem_desc __user *) arg); | |
2536 | case SNDCTL_DSP_SETSYNCRO: | |
2537 | /* stop DMA now.. */ | |
2538 | return 0; | |
2539 | case SNDCTL_DSP_SETDUPLEX: | |
2540 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) | |
2541 | return 0; | |
2542 | return -EIO; | |
2543 | case SNDCTL_DSP_GETODELAY: | |
2544 | res = snd_pcm_oss_get_odelay(pcm_oss_file); | |
2545 | if (res < 0) { | |
2546 | /* it's for sure, some broken apps don't check for error codes */ | |
2547 | put_user(0, p); | |
2548 | return res; | |
2549 | } | |
2550 | return put_user(res, p); | |
2551 | case SNDCTL_DSP_PROFILE: | |
2552 | return 0; /* silently ignore */ | |
2553 | default: | |
2554 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); | |
2555 | } | |
2556 | return -EINVAL; | |
2557 | } | |
2558 | ||
2559 | #ifdef CONFIG_COMPAT | |
2560 | /* all compatible */ | |
2561 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl | |
2562 | #else | |
2563 | #define snd_pcm_oss_ioctl_compat NULL | |
2564 | #endif | |
2565 | ||
2566 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
2567 | { | |
6ac77bc1 TI |
2568 | struct snd_pcm_oss_file *pcm_oss_file; |
2569 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
2570 | |
2571 | pcm_oss_file = file->private_data; | |
2572 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2573 | if (substream == NULL) | |
2574 | return -ENXIO; | |
0df63e44 | 2575 | substream->f_flags = file->f_flags & O_NONBLOCK; |
1da177e4 LT |
2576 | #ifndef OSS_DEBUG |
2577 | return snd_pcm_oss_read1(substream, buf, count); | |
2578 | #else | |
2579 | { | |
2580 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); | |
2581 | printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); | |
2582 | return res; | |
2583 | } | |
2584 | #endif | |
2585 | } | |
2586 | ||
2587 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) | |
2588 | { | |
6ac77bc1 TI |
2589 | struct snd_pcm_oss_file *pcm_oss_file; |
2590 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
2591 | long result; |
2592 | ||
2593 | pcm_oss_file = file->private_data; | |
2594 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2595 | if (substream == NULL) | |
2596 | return -ENXIO; | |
0df63e44 | 2597 | substream->f_flags = file->f_flags & O_NONBLOCK; |
1da177e4 | 2598 | result = snd_pcm_oss_write1(substream, buf, count); |
1da177e4 LT |
2599 | #ifdef OSS_DEBUG |
2600 | printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); | |
2601 | #endif | |
2602 | return result; | |
2603 | } | |
2604 | ||
6ac77bc1 | 2605 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
1da177e4 | 2606 | { |
6ac77bc1 | 2607 | struct snd_pcm_runtime *runtime = substream->runtime; |
9c323fcb | 2608 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
2609 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
2610 | else | |
2611 | return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; | |
2612 | } | |
2613 | ||
6ac77bc1 | 2614 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
1da177e4 | 2615 | { |
6ac77bc1 | 2616 | struct snd_pcm_runtime *runtime = substream->runtime; |
9c323fcb | 2617 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
2618 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
2619 | else | |
2620 | return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; | |
2621 | } | |
2622 | ||
2623 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) | |
2624 | { | |
6ac77bc1 | 2625 | struct snd_pcm_oss_file *pcm_oss_file; |
1da177e4 | 2626 | unsigned int mask; |
6ac77bc1 | 2627 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
1da177e4 LT |
2628 | |
2629 | pcm_oss_file = file->private_data; | |
2630 | ||
2631 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2632 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2633 | ||
2634 | mask = 0; | |
2635 | if (psubstream != NULL) { | |
6ac77bc1 | 2636 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
1da177e4 LT |
2637 | poll_wait(file, &runtime->sleep, wait); |
2638 | snd_pcm_stream_lock_irq(psubstream); | |
2639 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && | |
2640 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || | |
2641 | snd_pcm_oss_playback_ready(psubstream))) | |
2642 | mask |= POLLOUT | POLLWRNORM; | |
2643 | snd_pcm_stream_unlock_irq(psubstream); | |
2644 | } | |
2645 | if (csubstream != NULL) { | |
6ac77bc1 TI |
2646 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
2647 | snd_pcm_state_t ostate; | |
1da177e4 LT |
2648 | poll_wait(file, &runtime->sleep, wait); |
2649 | snd_pcm_stream_lock_irq(csubstream); | |
2650 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || | |
2651 | snd_pcm_oss_capture_ready(csubstream)) | |
2652 | mask |= POLLIN | POLLRDNORM; | |
2653 | snd_pcm_stream_unlock_irq(csubstream); | |
2654 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { | |
6ac77bc1 | 2655 | struct snd_pcm_oss_file ofile; |
1da177e4 LT |
2656 | memset(&ofile, 0, sizeof(ofile)); |
2657 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2658 | runtime->oss.trigger = 0; | |
2659 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); | |
2660 | } | |
2661 | } | |
2662 | ||
2663 | return mask; | |
2664 | } | |
2665 | ||
2666 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) | |
2667 | { | |
6ac77bc1 TI |
2668 | struct snd_pcm_oss_file *pcm_oss_file; |
2669 | struct snd_pcm_substream *substream = NULL; | |
2670 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2671 | int err; |
2672 | ||
2673 | #ifdef OSS_DEBUG | |
2674 | printk("pcm_oss: mmap begin\n"); | |
2675 | #endif | |
2676 | pcm_oss_file = file->private_data; | |
2677 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { | |
2678 | case VM_READ | VM_WRITE: | |
2679 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2680 | if (substream) | |
2681 | break; | |
2682 | /* Fall through */ | |
2683 | case VM_READ: | |
2684 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2685 | break; | |
2686 | case VM_WRITE: | |
2687 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2688 | break; | |
2689 | default: | |
2690 | return -EINVAL; | |
2691 | } | |
2692 | /* set VM_READ access as well to fix memset() routines that do | |
2693 | reads before writes (to improve performance) */ | |
2694 | area->vm_flags |= VM_READ; | |
2695 | if (substream == NULL) | |
2696 | return -ENXIO; | |
2697 | runtime = substream->runtime; | |
2698 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) | |
2699 | return -EIO; | |
2700 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) | |
2701 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
2702 | else | |
2703 | return -EIO; | |
2704 | ||
2705 | if (runtime->oss.params) { | |
2706 | if ((err = snd_pcm_oss_change_params(substream)) < 0) | |
2707 | return err; | |
2708 | } | |
21a3479a | 2709 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
2710 | if (runtime->oss.plugin_first != NULL) |
2711 | return -EIO; | |
21a3479a | 2712 | #endif |
1da177e4 LT |
2713 | |
2714 | if (area->vm_pgoff != 0) | |
2715 | return -EINVAL; | |
2716 | ||
2717 | err = snd_pcm_mmap_data(substream, file, area); | |
2718 | if (err < 0) | |
2719 | return err; | |
2720 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; | |
2721 | runtime->silence_threshold = 0; | |
2722 | runtime->silence_size = 0; | |
2723 | #ifdef OSS_DEBUG | |
2724 | printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); | |
2725 | #endif | |
2726 | /* In mmap mode we never stop */ | |
2727 | runtime->stop_threshold = runtime->boundary; | |
2728 | ||
2729 | return 0; | |
2730 | } | |
2731 | ||
b7d90a35 | 2732 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
1da177e4 LT |
2733 | /* |
2734 | * /proc interface | |
2735 | */ | |
2736 | ||
6ac77bc1 TI |
2737 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
2738 | struct snd_info_buffer *buffer) | |
1da177e4 | 2739 | { |
6ac77bc1 TI |
2740 | struct snd_pcm_str *pstr = entry->private_data; |
2741 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; | |
1a60d4c5 | 2742 | mutex_lock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2743 | while (setup) { |
2744 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", | |
2745 | setup->task_name, | |
2746 | setup->periods, | |
2747 | setup->period_size, | |
2748 | setup->disable ? " disable" : "", | |
2749 | setup->direct ? " direct" : "", | |
2750 | setup->block ? " block" : "", | |
2751 | setup->nonblock ? " non-block" : "", | |
2752 | setup->partialfrag ? " partial-frag" : "", | |
2753 | setup->nosilence ? " no-silence" : ""); | |
2754 | setup = setup->next; | |
2755 | } | |
1a60d4c5 | 2756 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2757 | } |
2758 | ||
6ac77bc1 | 2759 | static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr) |
1da177e4 | 2760 | { |
6ac77bc1 | 2761 | struct snd_pcm_oss_setup *setup, *setupn; |
1da177e4 | 2762 | |
1da177e4 LT |
2763 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
2764 | setup; setup = setupn) { | |
2765 | setupn = setup->next; | |
2766 | kfree(setup->task_name); | |
2767 | kfree(setup); | |
2768 | } | |
2769 | pstr->oss.setup_list = NULL; | |
2770 | } | |
2771 | ||
6ac77bc1 TI |
2772 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
2773 | struct snd_info_buffer *buffer) | |
1da177e4 | 2774 | { |
6ac77bc1 | 2775 | struct snd_pcm_str *pstr = entry->private_data; |
1da177e4 LT |
2776 | char line[128], str[32], task_name[32], *ptr; |
2777 | int idx1; | |
6ac77bc1 | 2778 | struct snd_pcm_oss_setup *setup, *setup1, template; |
1da177e4 LT |
2779 | |
2780 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
1a60d4c5 | 2781 | mutex_lock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2782 | memset(&template, 0, sizeof(template)); |
2783 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); | |
2784 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { | |
2785 | snd_pcm_oss_proc_free_setup_list(pstr); | |
1a60d4c5 | 2786 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2787 | continue; |
2788 | } | |
2789 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { | |
2790 | if (!strcmp(setup->task_name, task_name)) { | |
2791 | template = *setup; | |
2792 | break; | |
2793 | } | |
2794 | } | |
2795 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2796 | template.periods = simple_strtoul(str, NULL, 10); | |
2797 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2798 | template.period_size = simple_strtoul(str, NULL, 10); | |
2799 | for (idx1 = 31; idx1 >= 0; idx1--) | |
2800 | if (template.period_size & (1 << idx1)) | |
2801 | break; | |
2802 | for (idx1--; idx1 >= 0; idx1--) | |
2803 | template.period_size &= ~(1 << idx1); | |
2804 | do { | |
2805 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2806 | if (!strcmp(str, "disable")) { | |
2807 | template.disable = 1; | |
2808 | } else if (!strcmp(str, "direct")) { | |
2809 | template.direct = 1; | |
2810 | } else if (!strcmp(str, "block")) { | |
2811 | template.block = 1; | |
2812 | } else if (!strcmp(str, "non-block")) { | |
2813 | template.nonblock = 1; | |
2814 | } else if (!strcmp(str, "partial-frag")) { | |
2815 | template.partialfrag = 1; | |
2816 | } else if (!strcmp(str, "no-silence")) { | |
2817 | template.nosilence = 1; | |
10f69f9e TI |
2818 | } else if (!strcmp(str, "buggy-ptr")) { |
2819 | template.buggyptr = 1; | |
1da177e4 LT |
2820 | } |
2821 | } while (*str); | |
2822 | if (setup == NULL) { | |
060d77b9 TI |
2823 | setup = kmalloc(sizeof(*setup), GFP_KERNEL); |
2824 | if (! setup) { | |
2825 | buffer->error = -ENOMEM; | |
2826 | mutex_lock(&pstr->oss.setup_mutex); | |
2827 | return; | |
2828 | } | |
2829 | if (pstr->oss.setup_list == NULL) | |
2830 | pstr->oss.setup_list = setup; | |
2831 | else { | |
2832 | for (setup1 = pstr->oss.setup_list; | |
2833 | setup1->next; setup1 = setup1->next); | |
2834 | setup1->next = setup; | |
2835 | } | |
2836 | template.task_name = kstrdup(task_name, GFP_KERNEL); | |
2837 | if (! template.task_name) { | |
2838 | kfree(setup); | |
1da177e4 | 2839 | buffer->error = -ENOMEM; |
060d77b9 TI |
2840 | mutex_lock(&pstr->oss.setup_mutex); |
2841 | return; | |
1da177e4 LT |
2842 | } |
2843 | } | |
060d77b9 | 2844 | *setup = template; |
1a60d4c5 | 2845 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2846 | } |
2847 | } | |
2848 | ||
6ac77bc1 | 2849 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
1da177e4 LT |
2850 | { |
2851 | int stream; | |
2852 | for (stream = 0; stream < 2; ++stream) { | |
6ac77bc1 TI |
2853 | struct snd_info_entry *entry; |
2854 | struct snd_pcm_str *pstr = &pcm->streams[stream]; | |
1da177e4 LT |
2855 | if (pstr->substream_count == 0) |
2856 | continue; | |
2857 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { | |
2858 | entry->content = SNDRV_INFO_CONTENT_TEXT; | |
2859 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; | |
1da177e4 | 2860 | entry->c.text.read = snd_pcm_oss_proc_read; |
1da177e4 LT |
2861 | entry->c.text.write = snd_pcm_oss_proc_write; |
2862 | entry->private_data = pstr; | |
2863 | if (snd_info_register(entry) < 0) { | |
2864 | snd_info_free_entry(entry); | |
2865 | entry = NULL; | |
2866 | } | |
2867 | } | |
2868 | pstr->oss.proc_entry = entry; | |
2869 | } | |
2870 | } | |
2871 | ||
6ac77bc1 | 2872 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
1da177e4 LT |
2873 | { |
2874 | int stream; | |
2875 | for (stream = 0; stream < 2; ++stream) { | |
6ac77bc1 | 2876 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
746d4a02 TI |
2877 | snd_info_free_entry(pstr->oss.proc_entry); |
2878 | pstr->oss.proc_entry = NULL; | |
2879 | snd_pcm_oss_proc_free_setup_list(pstr); | |
1da177e4 LT |
2880 | } |
2881 | } | |
b7d90a35 | 2882 | #else /* !CONFIG_SND_VERBOSE_PROCFS */ |
04f141a8 TI |
2883 | #define snd_pcm_oss_proc_init(pcm) |
2884 | #define snd_pcm_oss_proc_done(pcm) | |
b7d90a35 | 2885 | #endif /* CONFIG_SND_VERBOSE_PROCFS */ |
1da177e4 LT |
2886 | |
2887 | /* | |
2888 | * ENTRY functions | |
2889 | */ | |
2890 | ||
9c2e08c5 | 2891 | static const struct file_operations snd_pcm_oss_f_reg = |
1da177e4 LT |
2892 | { |
2893 | .owner = THIS_MODULE, | |
2894 | .read = snd_pcm_oss_read, | |
2895 | .write = snd_pcm_oss_write, | |
2896 | .open = snd_pcm_oss_open, | |
2897 | .release = snd_pcm_oss_release, | |
2898 | .poll = snd_pcm_oss_poll, | |
2899 | .unlocked_ioctl = snd_pcm_oss_ioctl, | |
2900 | .compat_ioctl = snd_pcm_oss_ioctl_compat, | |
2901 | .mmap = snd_pcm_oss_mmap, | |
2902 | }; | |
2903 | ||
6ac77bc1 | 2904 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
1da177e4 LT |
2905 | { |
2906 | char name[128]; | |
2907 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); | |
2908 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2af677fc | 2909 | pcm->card, index, &snd_pcm_oss_f_reg, |
f87135f5 | 2910 | pcm, name) < 0) { |
d3d579f8 TI |
2911 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
2912 | pcm->card->number, pcm->device); | |
1da177e4 LT |
2913 | } |
2914 | } | |
2915 | ||
6ac77bc1 | 2916 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
1da177e4 LT |
2917 | { |
2918 | pcm->oss.reg = 0; | |
2919 | if (dsp_map[pcm->card->number] == (int)pcm->device) { | |
2920 | char name[128]; | |
2921 | int duplex; | |
2922 | register_oss_dsp(pcm, 0); | |
2923 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && | |
2924 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && | |
2925 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); | |
2926 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); | |
2927 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO | |
2928 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, | |
2929 | pcm->card->number, | |
2930 | name); | |
2931 | #endif | |
2932 | pcm->oss.reg++; | |
2933 | pcm->oss.reg_mask |= 1; | |
2934 | } | |
2935 | if (adsp_map[pcm->card->number] == (int)pcm->device) { | |
2936 | register_oss_dsp(pcm, 1); | |
2937 | pcm->oss.reg++; | |
2938 | pcm->oss.reg_mask |= 2; | |
2939 | } | |
2940 | ||
2941 | if (pcm->oss.reg) | |
2942 | snd_pcm_oss_proc_init(pcm); | |
2943 | ||
2944 | return 0; | |
2945 | } | |
2946 | ||
6ac77bc1 | 2947 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
1da177e4 LT |
2948 | { |
2949 | if (pcm->oss.reg) { | |
2950 | if (pcm->oss.reg_mask & 1) { | |
2951 | pcm->oss.reg_mask &= ~1; | |
2952 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2953 | pcm->card, 0); | |
2954 | } | |
2955 | if (pcm->oss.reg_mask & 2) { | |
2956 | pcm->oss.reg_mask &= ~2; | |
2957 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2958 | pcm->card, 1); | |
2959 | } | |
1da177e4 LT |
2960 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
2961 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO | |
2962 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); | |
2963 | #endif | |
2964 | } | |
2965 | pcm->oss.reg = 0; | |
1da177e4 LT |
2966 | } |
2967 | return 0; | |
2968 | } | |
2969 | ||
c461482c TI |
2970 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
2971 | { | |
2972 | snd_pcm_oss_disconnect_minor(pcm); | |
2973 | snd_pcm_oss_proc_done(pcm); | |
2974 | return 0; | |
2975 | } | |
2976 | ||
6ac77bc1 | 2977 | static struct snd_pcm_notify snd_pcm_oss_notify = |
1da177e4 LT |
2978 | { |
2979 | .n_register = snd_pcm_oss_register_minor, | |
2980 | .n_disconnect = snd_pcm_oss_disconnect_minor, | |
2981 | .n_unregister = snd_pcm_oss_unregister_minor, | |
2982 | }; | |
2983 | ||
2984 | static int __init alsa_pcm_oss_init(void) | |
2985 | { | |
2986 | int i; | |
2987 | int err; | |
2988 | ||
2989 | /* check device map table */ | |
2990 | for (i = 0; i < SNDRV_CARDS; i++) { | |
2991 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { | |
d3d579f8 TI |
2992 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
2993 | i, dsp_map[i]); | |
1da177e4 LT |
2994 | dsp_map[i] = 0; |
2995 | } | |
2996 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { | |
d3d579f8 TI |
2997 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
2998 | i, adsp_map[i]); | |
1da177e4 LT |
2999 | adsp_map[i] = 1; |
3000 | } | |
3001 | } | |
3002 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) | |
3003 | return err; | |
3004 | return 0; | |
3005 | } | |
3006 | ||
3007 | static void __exit alsa_pcm_oss_exit(void) | |
3008 | { | |
3009 | snd_pcm_notify(&snd_pcm_oss_notify, 1); | |
3010 | } | |
3011 | ||
3012 | module_init(alsa_pcm_oss_init) | |
3013 | module_exit(alsa_pcm_oss_exit) |