Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Digital Audio (PCM) abstract layer / OSS compatible | |
c1017a4c | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
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 | ||
1da177e4 | 29 | #include <linux/init.h> |
1da177e4 LT |
30 | #include <linux/slab.h> |
31 | #include <linux/time.h> | |
32 | #include <linux/vmalloc.h> | |
33 | #include <linux/moduleparam.h> | |
3f7440a6 | 34 | #include <linux/math64.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 | ||
c1017a4c | 51 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Abramo Bagnara <abramo@alsa-project.org>"); |
1da177e4 LT |
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); | |
7eaa943c TI |
456 | if (max < 0) |
457 | return max; | |
e88e8ae6 TI |
458 | last = 1; |
459 | } | |
460 | _end: | |
461 | kfree(save); | |
462 | if (last) | |
463 | v = snd_pcm_hw_param_last(pcm, params, var, dir); | |
464 | else | |
465 | v = snd_pcm_hw_param_first(pcm, params, var, dir); | |
7eaa943c | 466 | snd_BUG_ON(v < 0); |
e88e8ae6 TI |
467 | return v; |
468 | } | |
469 | ||
470 | static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params, | |
471 | snd_pcm_hw_param_t var, unsigned int val, | |
472 | int dir) | |
473 | { | |
474 | int changed; | |
475 | if (hw_is_mask(var)) { | |
476 | struct snd_mask *m = hw_param_mask(params, var); | |
477 | if (val == 0 && dir < 0) { | |
478 | changed = -EINVAL; | |
479 | snd_mask_none(m); | |
480 | } else { | |
481 | if (dir > 0) | |
482 | val++; | |
483 | else if (dir < 0) | |
484 | val--; | |
485 | changed = snd_mask_refine_set(hw_param_mask(params, var), val); | |
486 | } | |
487 | } else if (hw_is_interval(var)) { | |
488 | struct snd_interval *i = hw_param_interval(params, var); | |
489 | if (val == 0 && dir < 0) { | |
490 | changed = -EINVAL; | |
491 | snd_interval_none(i); | |
492 | } else if (dir == 0) | |
493 | changed = snd_interval_refine_set(i, val); | |
494 | else { | |
495 | struct snd_interval t; | |
496 | t.openmin = 1; | |
497 | t.openmax = 1; | |
498 | t.empty = 0; | |
499 | t.integer = 0; | |
500 | if (dir < 0) { | |
501 | t.min = val - 1; | |
502 | t.max = val; | |
503 | } else { | |
504 | t.min = val; | |
505 | t.max = val+1; | |
506 | } | |
507 | changed = snd_interval_refine(i, &t); | |
508 | } | |
509 | } else | |
510 | return -EINVAL; | |
511 | if (changed) { | |
512 | params->cmask |= 1 << var; | |
513 | params->rmask |= 1 << var; | |
514 | } | |
515 | return changed; | |
516 | } | |
517 | ||
518 | /** | |
519 | * snd_pcm_hw_param_set | |
520 | * @pcm: PCM instance | |
521 | * @params: the hw_params instance | |
522 | * @var: parameter to retrieve | |
523 | * @val: value to set | |
524 | * @dir: pointer to the direction (-1,0,1) or NULL | |
525 | * | |
526 | * Inside configuration space defined by PARAMS remove from PAR all | |
527 | * values != VAL. Reduce configuration space accordingly. | |
528 | * Return VAL or -EINVAL if the configuration space is empty | |
529 | */ | |
530 | static int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm, | |
531 | struct snd_pcm_hw_params *params, | |
532 | snd_pcm_hw_param_t var, unsigned int val, | |
533 | int dir) | |
534 | { | |
535 | int changed = _snd_pcm_hw_param_set(params, var, val, dir); | |
536 | if (changed < 0) | |
537 | return changed; | |
538 | if (params->rmask) { | |
539 | int err = snd_pcm_hw_refine(pcm, params); | |
540 | if (err < 0) | |
541 | return err; | |
542 | } | |
543 | return snd_pcm_hw_param_value(params, var, NULL); | |
544 | } | |
545 | ||
546 | static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params, | |
547 | snd_pcm_hw_param_t var) | |
548 | { | |
549 | int changed; | |
550 | changed = snd_interval_setinteger(hw_param_interval(params, var)); | |
551 | if (changed) { | |
552 | params->cmask |= 1 << var; | |
553 | params->rmask |= 1 << var; | |
554 | } | |
555 | return changed; | |
556 | } | |
557 | ||
558 | /* | |
559 | * plugin | |
560 | */ | |
561 | ||
21a3479a | 562 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
6ac77bc1 | 563 | static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream) |
1da177e4 | 564 | { |
6ac77bc1 TI |
565 | struct snd_pcm_runtime *runtime = substream->runtime; |
566 | struct snd_pcm_plugin *plugin, *next; | |
1da177e4 LT |
567 | |
568 | plugin = runtime->oss.plugin_first; | |
569 | while (plugin) { | |
570 | next = plugin->next; | |
571 | snd_pcm_plugin_free(plugin); | |
572 | plugin = next; | |
573 | } | |
574 | runtime->oss.plugin_first = runtime->oss.plugin_last = NULL; | |
575 | return 0; | |
576 | } | |
577 | ||
6ac77bc1 | 578 | static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin) |
1da177e4 | 579 | { |
6ac77bc1 | 580 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
1da177e4 LT |
581 | plugin->next = runtime->oss.plugin_first; |
582 | plugin->prev = NULL; | |
583 | if (runtime->oss.plugin_first) { | |
584 | runtime->oss.plugin_first->prev = plugin; | |
585 | runtime->oss.plugin_first = plugin; | |
586 | } else { | |
587 | runtime->oss.plugin_last = | |
588 | runtime->oss.plugin_first = plugin; | |
589 | } | |
590 | return 0; | |
591 | } | |
592 | ||
6ac77bc1 | 593 | int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin) |
1da177e4 | 594 | { |
6ac77bc1 | 595 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
1da177e4 LT |
596 | plugin->next = NULL; |
597 | plugin->prev = runtime->oss.plugin_last; | |
598 | if (runtime->oss.plugin_last) { | |
599 | runtime->oss.plugin_last->next = plugin; | |
600 | runtime->oss.plugin_last = plugin; | |
601 | } else { | |
602 | runtime->oss.plugin_last = | |
603 | runtime->oss.plugin_first = plugin; | |
604 | } | |
605 | return 0; | |
606 | } | |
21a3479a | 607 | #endif /* CONFIG_SND_PCM_OSS_PLUGINS */ |
1da177e4 | 608 | |
6ac77bc1 | 609 | static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames) |
1da177e4 | 610 | { |
6ac77bc1 | 611 | struct snd_pcm_runtime *runtime = substream->runtime; |
af081613 | 612 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
bfc5bddb | 613 | long bytes = frames_to_bytes(runtime, frames); |
1da177e4 | 614 | if (buffer_size == runtime->oss.buffer_bytes) |
bfc5bddb | 615 | return bytes; |
cdc5c53f TI |
616 | #if BITS_PER_LONG >= 64 |
617 | return runtime->oss.buffer_bytes * bytes / buffer_size; | |
618 | #else | |
619 | { | |
620 | u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes; | |
3f7440a6 | 621 | return div_u64(bsize, buffer_size); |
cdc5c53f TI |
622 | } |
623 | #endif | |
1da177e4 LT |
624 | } |
625 | ||
6ac77bc1 | 626 | static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes) |
1da177e4 | 627 | { |
6ac77bc1 | 628 | struct snd_pcm_runtime *runtime = substream->runtime; |
af081613 | 629 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
1da177e4 LT |
630 | if (buffer_size == runtime->oss.buffer_bytes) |
631 | return bytes_to_frames(runtime, bytes); | |
632 | return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes); | |
633 | } | |
634 | ||
f240406b JK |
635 | static inline |
636 | snd_pcm_uframes_t get_hw_ptr_period(struct snd_pcm_runtime *runtime) | |
637 | { | |
e7636925 | 638 | return runtime->hw_ptr_interrupt; |
f240406b JK |
639 | } |
640 | ||
24038a25 TI |
641 | /* define extended formats in the recent OSS versions (if any) */ |
642 | /* linear formats */ | |
643 | #define AFMT_S32_LE 0x00001000 | |
644 | #define AFMT_S32_BE 0x00002000 | |
645 | #define AFMT_S24_LE 0x00008000 | |
646 | #define AFMT_S24_BE 0x00010000 | |
647 | #define AFMT_S24_PACKED 0x00040000 | |
648 | ||
649 | /* other supported formats */ | |
650 | #define AFMT_FLOAT 0x00004000 | |
651 | #define AFMT_SPDIF_RAW 0x00020000 | |
652 | ||
653 | /* unsupported formats */ | |
654 | #define AFMT_AC3 0x00000400 | |
655 | #define AFMT_VORBIS 0x00000800 | |
656 | ||
1da177e4 LT |
657 | static int snd_pcm_oss_format_from(int format) |
658 | { | |
659 | switch (format) { | |
660 | case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; | |
661 | case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW; | |
662 | case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM; | |
663 | case AFMT_U8: return SNDRV_PCM_FORMAT_U8; | |
664 | case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE; | |
665 | case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE; | |
666 | case AFMT_S8: return SNDRV_PCM_FORMAT_S8; | |
667 | case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE; | |
668 | case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE; | |
669 | case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG; | |
24038a25 TI |
670 | case AFMT_S32_LE: return SNDRV_PCM_FORMAT_S32_LE; |
671 | case AFMT_S32_BE: return SNDRV_PCM_FORMAT_S32_BE; | |
672 | case AFMT_S24_LE: return SNDRV_PCM_FORMAT_S24_LE; | |
673 | case AFMT_S24_BE: return SNDRV_PCM_FORMAT_S24_BE; | |
674 | case AFMT_S24_PACKED: return SNDRV_PCM_FORMAT_S24_3LE; | |
675 | case AFMT_FLOAT: return SNDRV_PCM_FORMAT_FLOAT; | |
676 | case AFMT_SPDIF_RAW: return SNDRV_PCM_FORMAT_IEC958_SUBFRAME; | |
1da177e4 LT |
677 | default: return SNDRV_PCM_FORMAT_U8; |
678 | } | |
679 | } | |
680 | ||
681 | static int snd_pcm_oss_format_to(int format) | |
682 | { | |
683 | switch (format) { | |
684 | case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; | |
685 | case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW; | |
686 | case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM; | |
687 | case SNDRV_PCM_FORMAT_U8: return AFMT_U8; | |
688 | case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE; | |
689 | case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE; | |
690 | case SNDRV_PCM_FORMAT_S8: return AFMT_S8; | |
691 | case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE; | |
692 | case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE; | |
693 | case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG; | |
24038a25 TI |
694 | case SNDRV_PCM_FORMAT_S32_LE: return AFMT_S32_LE; |
695 | case SNDRV_PCM_FORMAT_S32_BE: return AFMT_S32_BE; | |
696 | case SNDRV_PCM_FORMAT_S24_LE: return AFMT_S24_LE; | |
697 | case SNDRV_PCM_FORMAT_S24_BE: return AFMT_S24_BE; | |
698 | case SNDRV_PCM_FORMAT_S24_3LE: return AFMT_S24_PACKED; | |
699 | case SNDRV_PCM_FORMAT_FLOAT: return AFMT_FLOAT; | |
700 | case SNDRV_PCM_FORMAT_IEC958_SUBFRAME: return AFMT_SPDIF_RAW; | |
1da177e4 LT |
701 | default: return -EINVAL; |
702 | } | |
703 | } | |
704 | ||
6ac77bc1 TI |
705 | static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, |
706 | struct snd_pcm_hw_params *oss_params, | |
707 | struct snd_pcm_hw_params *slave_params) | |
1da177e4 LT |
708 | { |
709 | size_t s; | |
710 | size_t oss_buffer_size, oss_period_size, oss_periods; | |
711 | size_t min_period_size, max_period_size; | |
6ac77bc1 | 712 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
713 | size_t oss_frame_size; |
714 | ||
715 | oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * | |
716 | params_channels(oss_params) / 8; | |
717 | ||
718 | oss_buffer_size = snd_pcm_plug_client_size(substream, | |
719 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; | |
720 | oss_buffer_size = 1 << ld2(oss_buffer_size); | |
9c323fcb | 721 | if (atomic_read(&substream->mmap_count)) { |
1da177e4 LT |
722 | if (oss_buffer_size > runtime->oss.mmap_bytes) |
723 | oss_buffer_size = runtime->oss.mmap_bytes; | |
724 | } | |
725 | ||
060d77b9 TI |
726 | if (substream->oss.setup.period_size > 16) |
727 | oss_period_size = substream->oss.setup.period_size; | |
1da177e4 LT |
728 | else if (runtime->oss.fragshift) { |
729 | oss_period_size = 1 << runtime->oss.fragshift; | |
730 | if (oss_period_size > oss_buffer_size / 2) | |
731 | oss_period_size = oss_buffer_size / 2; | |
732 | } else { | |
733 | int sd; | |
734 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; | |
735 | ||
736 | oss_period_size = oss_buffer_size; | |
737 | do { | |
738 | oss_period_size /= 2; | |
739 | } while (oss_period_size > bytes_per_sec); | |
740 | if (runtime->oss.subdivision == 0) { | |
741 | sd = 4; | |
742 | if (oss_period_size / sd > 4096) | |
743 | sd *= 2; | |
744 | if (oss_period_size / sd < 4096) | |
745 | sd = 1; | |
746 | } else | |
747 | sd = runtime->oss.subdivision; | |
748 | oss_period_size /= sd; | |
749 | if (oss_period_size < 16) | |
750 | oss_period_size = 16; | |
751 | } | |
752 | ||
753 | min_period_size = snd_pcm_plug_client_size(substream, | |
754 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); | |
755 | min_period_size *= oss_frame_size; | |
756 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); | |
757 | if (oss_period_size < min_period_size) | |
758 | oss_period_size = min_period_size; | |
759 | ||
760 | max_period_size = snd_pcm_plug_client_size(substream, | |
761 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); | |
762 | max_period_size *= oss_frame_size; | |
763 | max_period_size = 1 << ld2(max_period_size); | |
764 | if (oss_period_size > max_period_size) | |
765 | oss_period_size = max_period_size; | |
766 | ||
767 | oss_periods = oss_buffer_size / oss_period_size; | |
768 | ||
060d77b9 TI |
769 | if (substream->oss.setup.periods > 1) |
770 | oss_periods = substream->oss.setup.periods; | |
1da177e4 LT |
771 | |
772 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); | |
773 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) | |
774 | s = runtime->oss.maxfrags; | |
775 | if (oss_periods > s) | |
776 | oss_periods = s; | |
777 | ||
778 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); | |
779 | if (s < 2) | |
780 | s = 2; | |
781 | if (oss_periods < s) | |
782 | oss_periods = s; | |
783 | ||
784 | while (oss_period_size * oss_periods > oss_buffer_size) | |
785 | oss_period_size /= 2; | |
786 | ||
7eaa943c TI |
787 | if (oss_period_size < 16) |
788 | return -EINVAL; | |
1da177e4 LT |
789 | runtime->oss.period_bytes = oss_period_size; |
790 | runtime->oss.period_frames = 1; | |
791 | runtime->oss.periods = oss_periods; | |
792 | return 0; | |
793 | } | |
794 | ||
6ac77bc1 TI |
795 | static int choose_rate(struct snd_pcm_substream *substream, |
796 | struct snd_pcm_hw_params *params, unsigned int best_rate) | |
1da177e4 | 797 | { |
6ac77bc1 TI |
798 | struct snd_interval *it; |
799 | struct snd_pcm_hw_params *save; | |
1da177e4 LT |
800 | unsigned int rate, prev; |
801 | ||
802 | save = kmalloc(sizeof(*save), GFP_KERNEL); | |
803 | if (save == NULL) | |
804 | return -ENOMEM; | |
805 | *save = *params; | |
806 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); | |
807 | ||
808 | /* try multiples of the best rate */ | |
809 | rate = best_rate; | |
810 | for (;;) { | |
811 | if (it->max < rate || (it->max == rate && it->openmax)) | |
812 | break; | |
813 | if (it->min < rate || (it->min == rate && !it->openmin)) { | |
814 | int ret; | |
815 | ret = snd_pcm_hw_param_set(substream, params, | |
816 | SNDRV_PCM_HW_PARAM_RATE, | |
817 | rate, 0); | |
818 | if (ret == (int)rate) { | |
819 | kfree(save); | |
820 | return rate; | |
821 | } | |
822 | *params = *save; | |
823 | } | |
824 | prev = rate; | |
825 | rate += best_rate; | |
826 | if (rate <= prev) | |
827 | break; | |
828 | } | |
829 | ||
830 | /* not found, use the nearest rate */ | |
831 | kfree(save); | |
832 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); | |
833 | } | |
834 | ||
6ac77bc1 | 835 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
1da177e4 | 836 | { |
6ac77bc1 TI |
837 | struct snd_pcm_runtime *runtime = substream->runtime; |
838 | struct snd_pcm_hw_params *params, *sparams; | |
839 | struct snd_pcm_sw_params *sw_params; | |
1da177e4 LT |
840 | ssize_t oss_buffer_size, oss_period_size; |
841 | size_t oss_frame_size; | |
842 | int err; | |
843 | int direct; | |
844 | int format, sformat, n; | |
6ac77bc1 TI |
845 | struct snd_mask sformat_mask; |
846 | struct snd_mask mask; | |
1da177e4 | 847 | |
e3a5d59a TI |
848 | if (mutex_lock_interruptible(&runtime->oss.params_lock)) |
849 | return -EINTR; | |
1da177e4 LT |
850 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); |
851 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
852 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); | |
853 | if (!sw_params || !params || !sparams) { | |
854 | snd_printd("No memory\n"); | |
855 | err = -ENOMEM; | |
856 | goto failure; | |
857 | } | |
858 | ||
9c323fcb | 859 | if (atomic_read(&substream->mmap_count)) |
1da177e4 | 860 | direct = 1; |
060d77b9 TI |
861 | else |
862 | direct = substream->oss.setup.direct; | |
1da177e4 LT |
863 | |
864 | _snd_pcm_hw_params_any(sparams); | |
865 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); | |
866 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); | |
867 | snd_mask_none(&mask); | |
9c323fcb | 868 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
869 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); |
870 | else { | |
871 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); | |
872 | if (!direct) | |
873 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); | |
874 | } | |
875 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); | |
876 | if (err < 0) { | |
877 | snd_printd("No usable accesses\n"); | |
878 | err = -EINVAL; | |
879 | goto failure; | |
880 | } | |
881 | choose_rate(substream, sparams, runtime->oss.rate); | |
882 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); | |
883 | ||
884 | format = snd_pcm_oss_format_from(runtime->oss.format); | |
885 | ||
886 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); | |
887 | if (direct) | |
888 | sformat = format; | |
889 | else | |
890 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); | |
891 | ||
892 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { | |
893 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { | |
894 | if (snd_mask_test(&sformat_mask, sformat) && | |
895 | snd_pcm_oss_format_to(sformat) >= 0) | |
896 | break; | |
897 | } | |
898 | if (sformat > SNDRV_PCM_FORMAT_LAST) { | |
899 | snd_printd("Cannot find a format!!!\n"); | |
900 | err = -EINVAL; | |
901 | goto failure; | |
902 | } | |
903 | } | |
904 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); | |
7eaa943c TI |
905 | if (err < 0) |
906 | goto failure; | |
1da177e4 LT |
907 | |
908 | if (direct) { | |
909 | memcpy(params, sparams, sizeof(*params)); | |
910 | } else { | |
911 | _snd_pcm_hw_params_any(params); | |
912 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, | |
913 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); | |
914 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, | |
915 | snd_pcm_oss_format_from(runtime->oss.format), 0); | |
916 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, | |
917 | runtime->oss.channels, 0); | |
918 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, | |
919 | runtime->oss.rate, 0); | |
920 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", | |
921 | params_access(params), params_format(params), | |
922 | params_channels(params), params_rate(params)); | |
923 | } | |
924 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", | |
925 | params_access(sparams), params_format(sparams), | |
926 | params_channels(sparams), params_rate(sparams)); | |
927 | ||
928 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * | |
929 | params_channels(params) / 8; | |
930 | ||
21a3479a | 931 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
932 | snd_pcm_oss_plugin_clear(substream); |
933 | if (!direct) { | |
934 | /* add necessary plugins */ | |
935 | snd_pcm_oss_plugin_clear(substream); | |
936 | if ((err = snd_pcm_plug_format_plugins(substream, | |
937 | params, | |
938 | sparams)) < 0) { | |
939 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); | |
940 | snd_pcm_oss_plugin_clear(substream); | |
941 | goto failure; | |
942 | } | |
943 | if (runtime->oss.plugin_first) { | |
6ac77bc1 | 944 | struct snd_pcm_plugin *plugin; |
1da177e4 LT |
945 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
946 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); | |
947 | snd_pcm_oss_plugin_clear(substream); | |
948 | goto failure; | |
949 | } | |
950 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
951 | err = snd_pcm_plugin_append(plugin); | |
952 | } else { | |
953 | err = snd_pcm_plugin_insert(plugin); | |
954 | } | |
955 | if (err < 0) { | |
956 | snd_pcm_oss_plugin_clear(substream); | |
957 | goto failure; | |
958 | } | |
959 | } | |
960 | } | |
21a3479a | 961 | #endif |
1da177e4 LT |
962 | |
963 | err = snd_pcm_oss_period_size(substream, params, sparams); | |
964 | if (err < 0) | |
965 | goto failure; | |
966 | ||
967 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); | |
968 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); | |
7eaa943c TI |
969 | if (err < 0) |
970 | goto failure; | |
1da177e4 LT |
971 | |
972 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, | |
973 | runtime->oss.periods, NULL); | |
7eaa943c TI |
974 | if (err < 0) |
975 | goto failure; | |
1da177e4 LT |
976 | |
977 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
978 | ||
979 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { | |
980 | snd_printd("HW_PARAMS failed: %i\n", err); | |
981 | goto failure; | |
982 | } | |
983 | ||
984 | memset(sw_params, 0, sizeof(*sw_params)); | |
985 | if (runtime->oss.trigger) { | |
986 | sw_params->start_threshold = 1; | |
987 | } else { | |
988 | sw_params->start_threshold = runtime->boundary; | |
989 | } | |
9c323fcb TI |
990 | if (atomic_read(&substream->mmap_count) || |
991 | substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
1da177e4 LT |
992 | sw_params->stop_threshold = runtime->boundary; |
993 | else | |
994 | sw_params->stop_threshold = runtime->buffer_size; | |
995 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
996 | sw_params->period_step = 1; | |
004e6538 TI |
997 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
998 | 1 : runtime->period_size; | |
9c323fcb | 999 | if (atomic_read(&substream->mmap_count) || |
060d77b9 | 1000 | substream->oss.setup.nosilence) { |
1da177e4 LT |
1001 | sw_params->silence_threshold = 0; |
1002 | sw_params->silence_size = 0; | |
1003 | } else { | |
1004 | snd_pcm_uframes_t frames; | |
1005 | frames = runtime->period_size + 16; | |
1006 | if (frames > runtime->buffer_size) | |
1007 | frames = runtime->buffer_size; | |
1008 | sw_params->silence_threshold = frames; | |
1009 | sw_params->silence_size = frames; | |
1010 | } | |
1011 | ||
1012 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { | |
1013 | snd_printd("SW_PARAMS failed: %i\n", err); | |
1014 | goto failure; | |
1015 | } | |
1016 | ||
1017 | runtime->oss.periods = params_periods(sparams); | |
1018 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); | |
7eaa943c TI |
1019 | if (oss_period_size < 0) { |
1020 | err = -EINVAL; | |
1021 | goto failure; | |
1022 | } | |
21a3479a | 1023 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
1024 | if (runtime->oss.plugin_first) { |
1025 | err = snd_pcm_plug_alloc(substream, oss_period_size); | |
1026 | if (err < 0) | |
1027 | goto failure; | |
1028 | } | |
21a3479a | 1029 | #endif |
1da177e4 LT |
1030 | oss_period_size *= oss_frame_size; |
1031 | ||
1032 | oss_buffer_size = oss_period_size * runtime->oss.periods; | |
7eaa943c TI |
1033 | if (oss_buffer_size < 0) { |
1034 | err = -EINVAL; | |
1035 | goto failure; | |
1036 | } | |
1da177e4 LT |
1037 | |
1038 | runtime->oss.period_bytes = oss_period_size; | |
1039 | runtime->oss.buffer_bytes = oss_buffer_size; | |
1040 | ||
1041 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", | |
1042 | runtime->oss.period_bytes, | |
1043 | runtime->oss.buffer_bytes); | |
1044 | pdprintf("slave: period_size = %i, buffer_size = %i\n", | |
1045 | params_period_size(sparams), | |
1046 | params_buffer_size(sparams)); | |
1047 | ||
1048 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); | |
1049 | runtime->oss.channels = params_channels(params); | |
1050 | runtime->oss.rate = params_rate(params); | |
1051 | ||
1da177e4 LT |
1052 | vfree(runtime->oss.buffer); |
1053 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); | |
cbbb0570 RK |
1054 | if (!runtime->oss.buffer) { |
1055 | err = -ENOMEM; | |
1056 | goto failure; | |
1057 | } | |
1058 | ||
1059 | runtime->oss.params = 0; | |
1060 | runtime->oss.prepare = 1; | |
1da177e4 LT |
1061 | runtime->oss.buffer_used = 0; |
1062 | if (runtime->dma_area) | |
1063 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); | |
1064 | ||
1065 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); | |
1066 | ||
1067 | err = 0; | |
1068 | failure: | |
1069 | kfree(sw_params); | |
1070 | kfree(params); | |
1071 | kfree(sparams); | |
e3a5d59a | 1072 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 LT |
1073 | return err; |
1074 | } | |
1075 | ||
6ac77bc1 | 1076 | static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream) |
1da177e4 LT |
1077 | { |
1078 | int idx, err; | |
6ac77bc1 | 1079 | struct snd_pcm_substream *asubstream = NULL, *substream; |
1da177e4 LT |
1080 | |
1081 | for (idx = 0; idx < 2; idx++) { | |
1082 | substream = pcm_oss_file->streams[idx]; | |
1083 | if (substream == NULL) | |
1084 | continue; | |
1085 | if (asubstream == NULL) | |
1086 | asubstream = substream; | |
1087 | if (substream->runtime->oss.params) { | |
1088 | err = snd_pcm_oss_change_params(substream); | |
1089 | if (err < 0) | |
1090 | return err; | |
1091 | } | |
1092 | } | |
7eaa943c TI |
1093 | if (!asubstream) |
1094 | return -EIO; | |
1da177e4 LT |
1095 | if (r_substream) |
1096 | *r_substream = asubstream; | |
1097 | return 0; | |
1098 | } | |
1099 | ||
6ac77bc1 | 1100 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
1da177e4 LT |
1101 | { |
1102 | int err; | |
6ac77bc1 | 1103 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1104 | |
1105 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); | |
1106 | if (err < 0) { | |
1107 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); | |
1108 | return err; | |
1109 | } | |
1110 | runtime->oss.prepare = 0; | |
f240406b | 1111 | runtime->oss.prev_hw_ptr_period = 0; |
1da177e4 LT |
1112 | runtime->oss.period_ptr = 0; |
1113 | runtime->oss.buffer_used = 0; | |
1114 | ||
1115 | return 0; | |
1116 | } | |
1117 | ||
6ac77bc1 | 1118 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
1da177e4 | 1119 | { |
6ac77bc1 | 1120 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1121 | int err; |
1122 | ||
1123 | if (substream == NULL) | |
1124 | return 0; | |
1125 | runtime = substream->runtime; | |
1126 | if (runtime->oss.params) { | |
1127 | err = snd_pcm_oss_change_params(substream); | |
1128 | if (err < 0) | |
1129 | return err; | |
1130 | } | |
1131 | if (runtime->oss.prepare) { | |
1132 | err = snd_pcm_oss_prepare(substream); | |
1133 | if (err < 0) | |
1134 | return err; | |
1135 | } | |
1136 | return 0; | |
1137 | } | |
1138 | ||
6ac77bc1 | 1139 | static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay) |
1da177e4 | 1140 | { |
6ac77bc1 | 1141 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1142 | snd_pcm_uframes_t frames; |
1143 | int err = 0; | |
1144 | ||
1145 | while (1) { | |
1146 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); | |
1147 | if (err < 0) | |
1148 | break; | |
1149 | runtime = substream->runtime; | |
1150 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) | |
1151 | break; | |
1152 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ | |
1153 | /* until avail(delay) <= buffer_size */ | |
1154 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; | |
1155 | frames /= runtime->period_size; | |
1156 | frames *= runtime->period_size; | |
1157 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); | |
1158 | if (err < 0) | |
1159 | break; | |
1160 | } | |
1161 | return err; | |
1162 | } | |
1163 | ||
6ac77bc1 | 1164 | 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 | 1165 | { |
6ac77bc1 | 1166 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1167 | int ret; |
1168 | while (1) { | |
1169 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1170 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1171 | #ifdef OSS_DEBUG | |
1172 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
006de267 TI |
1173 | printk(KERN_DEBUG "pcm_oss: write: " |
1174 | "recovering from XRUN\n"); | |
1da177e4 | 1175 | else |
006de267 TI |
1176 | printk(KERN_DEBUG "pcm_oss: write: " |
1177 | "recovering from SUSPEND\n"); | |
1da177e4 LT |
1178 | #endif |
1179 | ret = snd_pcm_oss_prepare(substream); | |
1180 | if (ret < 0) | |
1181 | break; | |
1182 | } | |
1183 | if (in_kernel) { | |
1184 | mm_segment_t fs; | |
1185 | fs = snd_enter_user(); | |
1186 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); | |
1187 | snd_leave_user(fs); | |
1188 | } else { | |
1189 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); | |
1190 | } | |
1191 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
1192 | break; | |
1193 | /* test, if we can't store new data, because the stream */ | |
1194 | /* has not been started */ | |
1195 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) | |
1196 | return -EAGAIN; | |
1197 | } | |
1198 | return ret; | |
1199 | } | |
1200 | ||
6ac77bc1 | 1201 | snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 1202 | { |
6ac77bc1 | 1203 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1204 | snd_pcm_sframes_t delay; |
1205 | int ret; | |
1206 | while (1) { | |
1207 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1208 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1209 | #ifdef OSS_DEBUG | |
1210 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
006de267 TI |
1211 | printk(KERN_DEBUG "pcm_oss: read: " |
1212 | "recovering from XRUN\n"); | |
1da177e4 | 1213 | else |
006de267 TI |
1214 | printk(KERN_DEBUG "pcm_oss: read: " |
1215 | "recovering from SUSPEND\n"); | |
1da177e4 LT |
1216 | #endif |
1217 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
1218 | if (ret < 0) | |
1219 | break; | |
1220 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { | |
1221 | ret = snd_pcm_oss_prepare(substream); | |
1222 | if (ret < 0) | |
1223 | break; | |
1224 | } | |
1225 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); | |
1226 | if (ret < 0) | |
1227 | break; | |
1228 | if (in_kernel) { | |
1229 | mm_segment_t fs; | |
1230 | fs = snd_enter_user(); | |
1231 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); | |
1232 | snd_leave_user(fs); | |
1233 | } else { | |
1234 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); | |
1235 | } | |
1236 | if (ret == -EPIPE) { | |
1237 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { | |
1238 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
1239 | if (ret < 0) | |
1240 | break; | |
1241 | } | |
1242 | continue; | |
1243 | } | |
1244 | if (ret != -ESTRPIPE) | |
1245 | break; | |
1246 | } | |
1247 | return ret; | |
1248 | } | |
1249 | ||
6ac77bc1 | 1250 | snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 1251 | { |
6ac77bc1 | 1252 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1253 | int ret; |
1254 | while (1) { | |
1255 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1256 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1257 | #ifdef OSS_DEBUG | |
1258 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
006de267 TI |
1259 | printk(KERN_DEBUG "pcm_oss: writev: " |
1260 | "recovering from XRUN\n"); | |
1da177e4 | 1261 | else |
006de267 TI |
1262 | printk(KERN_DEBUG "pcm_oss: writev: " |
1263 | "recovering from SUSPEND\n"); | |
1da177e4 LT |
1264 | #endif |
1265 | ret = snd_pcm_oss_prepare(substream); | |
1266 | if (ret < 0) | |
1267 | break; | |
1268 | } | |
1269 | if (in_kernel) { | |
1270 | mm_segment_t fs; | |
1271 | fs = snd_enter_user(); | |
1272 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); | |
1273 | snd_leave_user(fs); | |
1274 | } else { | |
1275 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); | |
1276 | } | |
1277 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
1278 | break; | |
1279 | ||
1280 | /* test, if we can't store new data, because the stream */ | |
1281 | /* has not been started */ | |
1282 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) | |
1283 | return -EAGAIN; | |
1284 | } | |
1285 | return ret; | |
1286 | } | |
1287 | ||
6ac77bc1 | 1288 | snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 1289 | { |
6ac77bc1 | 1290 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1291 | int ret; |
1292 | while (1) { | |
1293 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1294 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1295 | #ifdef OSS_DEBUG | |
1296 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
006de267 TI |
1297 | printk(KERN_DEBUG "pcm_oss: readv: " |
1298 | "recovering from XRUN\n"); | |
1da177e4 | 1299 | else |
006de267 TI |
1300 | printk(KERN_DEBUG "pcm_oss: readv: " |
1301 | "recovering from SUSPEND\n"); | |
1da177e4 LT |
1302 | #endif |
1303 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
1304 | if (ret < 0) | |
1305 | break; | |
1306 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { | |
1307 | ret = snd_pcm_oss_prepare(substream); | |
1308 | if (ret < 0) | |
1309 | break; | |
1310 | } | |
1311 | if (in_kernel) { | |
1312 | mm_segment_t fs; | |
1313 | fs = snd_enter_user(); | |
1314 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); | |
1315 | snd_leave_user(fs); | |
1316 | } else { | |
1317 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); | |
1318 | } | |
1319 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
1320 | break; | |
1321 | } | |
1322 | return ret; | |
1323 | } | |
1324 | ||
6ac77bc1 | 1325 | static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel) |
1da177e4 | 1326 | { |
6ac77bc1 | 1327 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1328 | snd_pcm_sframes_t frames, frames1; |
21a3479a | 1329 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 | 1330 | if (runtime->oss.plugin_first) { |
6ac77bc1 | 1331 | struct snd_pcm_plugin_channel *channels; |
1da177e4 LT |
1332 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
1333 | if (!in_kernel) { | |
1334 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) | |
1335 | return -EFAULT; | |
1336 | buf = runtime->oss.buffer; | |
1337 | } | |
1338 | frames = bytes / oss_frame_bytes; | |
1339 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); | |
1340 | if (frames1 < 0) | |
1341 | return frames1; | |
1342 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); | |
1343 | if (frames1 <= 0) | |
1344 | return frames1; | |
1345 | bytes = frames1 * oss_frame_bytes; | |
21a3479a JK |
1346 | } else |
1347 | #endif | |
1348 | { | |
1da177e4 LT |
1349 | frames = bytes_to_frames(runtime, bytes); |
1350 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); | |
1351 | if (frames1 <= 0) | |
1352 | return frames1; | |
1353 | bytes = frames_to_bytes(runtime, frames1); | |
1354 | } | |
1355 | return bytes; | |
1356 | } | |
1357 | ||
6ac77bc1 | 1358 | static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes) |
1da177e4 LT |
1359 | { |
1360 | size_t xfer = 0; | |
1361 | ssize_t tmp; | |
6ac77bc1 | 1362 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1363 | |
9c323fcb | 1364 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
1365 | return -ENXIO; |
1366 | ||
1367 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) | |
1368 | return tmp; | |
e3a5d59a | 1369 | mutex_lock(&runtime->oss.params_lock); |
1da177e4 LT |
1370 | while (bytes > 0) { |
1371 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { | |
1372 | tmp = bytes; | |
1373 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) | |
1374 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; | |
1375 | if (tmp > 0) { | |
e3a5d59a TI |
1376 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) { |
1377 | tmp = -EFAULT; | |
1378 | goto err; | |
1379 | } | |
1da177e4 LT |
1380 | } |
1381 | runtime->oss.buffer_used += tmp; | |
1382 | buf += tmp; | |
1383 | bytes -= tmp; | |
1384 | xfer += tmp; | |
060d77b9 | 1385 | if (substream->oss.setup.partialfrag || |
1da177e4 LT |
1386 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
1387 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, | |
1388 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); | |
1389 | if (tmp <= 0) | |
e3a5d59a | 1390 | goto err; |
1da177e4 LT |
1391 | runtime->oss.bytes += tmp; |
1392 | runtime->oss.period_ptr += tmp; | |
1393 | runtime->oss.period_ptr %= runtime->oss.period_bytes; | |
1394 | if (runtime->oss.period_ptr == 0 || | |
1395 | runtime->oss.period_ptr == runtime->oss.buffer_used) | |
1396 | runtime->oss.buffer_used = 0; | |
e3a5d59a TI |
1397 | else if ((substream->f_flags & O_NONBLOCK) != 0) { |
1398 | tmp = -EAGAIN; | |
1399 | goto err; | |
1400 | } | |
1da177e4 LT |
1401 | } |
1402 | } else { | |
4d23359b CL |
1403 | tmp = snd_pcm_oss_write2(substream, |
1404 | (const char __force *)buf, | |
1405 | runtime->oss.period_bytes, 0); | |
1da177e4 | 1406 | if (tmp <= 0) |
e3a5d59a | 1407 | goto err; |
1da177e4 LT |
1408 | runtime->oss.bytes += tmp; |
1409 | buf += tmp; | |
1410 | bytes -= tmp; | |
1411 | xfer += tmp; | |
0df63e44 | 1412 | if ((substream->f_flags & O_NONBLOCK) != 0 && |
1da177e4 LT |
1413 | tmp != runtime->oss.period_bytes) |
1414 | break; | |
1415 | } | |
1416 | } | |
e3a5d59a | 1417 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 | 1418 | return xfer; |
e3a5d59a TI |
1419 | |
1420 | err: | |
1421 | mutex_unlock(&runtime->oss.params_lock); | |
1422 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
1da177e4 LT |
1423 | } |
1424 | ||
6ac77bc1 | 1425 | static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel) |
1da177e4 | 1426 | { |
6ac77bc1 | 1427 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1428 | snd_pcm_sframes_t frames, frames1; |
21a3479a | 1429 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
1430 | char __user *final_dst = (char __user *)buf; |
1431 | if (runtime->oss.plugin_first) { | |
6ac77bc1 | 1432 | struct snd_pcm_plugin_channel *channels; |
1da177e4 LT |
1433 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
1434 | if (!in_kernel) | |
1435 | buf = runtime->oss.buffer; | |
1436 | frames = bytes / oss_frame_bytes; | |
1437 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); | |
1438 | if (frames1 < 0) | |
1439 | return frames1; | |
1440 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); | |
1441 | if (frames1 <= 0) | |
1442 | return frames1; | |
1443 | bytes = frames1 * oss_frame_bytes; | |
1444 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) | |
1445 | return -EFAULT; | |
21a3479a JK |
1446 | } else |
1447 | #endif | |
1448 | { | |
1da177e4 LT |
1449 | frames = bytes_to_frames(runtime, bytes); |
1450 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); | |
1451 | if (frames1 <= 0) | |
1452 | return frames1; | |
1453 | bytes = frames_to_bytes(runtime, frames1); | |
1454 | } | |
1455 | return bytes; | |
1456 | } | |
1457 | ||
6ac77bc1 | 1458 | static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes) |
1da177e4 LT |
1459 | { |
1460 | size_t xfer = 0; | |
1461 | ssize_t tmp; | |
6ac77bc1 | 1462 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1463 | |
9c323fcb | 1464 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
1465 | return -ENXIO; |
1466 | ||
1467 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) | |
1468 | return tmp; | |
e3a5d59a | 1469 | mutex_lock(&runtime->oss.params_lock); |
1da177e4 LT |
1470 | while (bytes > 0) { |
1471 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { | |
1472 | if (runtime->oss.buffer_used == 0) { | |
1473 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); | |
1474 | if (tmp <= 0) | |
e3a5d59a | 1475 | goto err; |
1da177e4 LT |
1476 | runtime->oss.bytes += tmp; |
1477 | runtime->oss.period_ptr = tmp; | |
1478 | runtime->oss.buffer_used = tmp; | |
1479 | } | |
1480 | tmp = bytes; | |
1481 | if ((size_t) tmp > runtime->oss.buffer_used) | |
1482 | tmp = runtime->oss.buffer_used; | |
e3a5d59a TI |
1483 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) { |
1484 | tmp = -EFAULT; | |
1485 | goto err; | |
1486 | } | |
1da177e4 LT |
1487 | buf += tmp; |
1488 | bytes -= tmp; | |
1489 | xfer += tmp; | |
1490 | runtime->oss.buffer_used -= tmp; | |
1491 | } else { | |
4d23359b CL |
1492 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
1493 | runtime->oss.period_bytes, 0); | |
1da177e4 | 1494 | if (tmp <= 0) |
e3a5d59a | 1495 | goto err; |
1da177e4 LT |
1496 | runtime->oss.bytes += tmp; |
1497 | buf += tmp; | |
1498 | bytes -= tmp; | |
1499 | xfer += tmp; | |
1500 | } | |
1501 | } | |
e3a5d59a | 1502 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 | 1503 | return xfer; |
e3a5d59a TI |
1504 | |
1505 | err: | |
1506 | mutex_unlock(&runtime->oss.params_lock); | |
1507 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
1da177e4 LT |
1508 | } |
1509 | ||
6ac77bc1 | 1510 | static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1511 | { |
6ac77bc1 | 1512 | struct snd_pcm_substream *substream; |
60686aa0 TI |
1513 | struct snd_pcm_runtime *runtime; |
1514 | int i; | |
1da177e4 | 1515 | |
60686aa0 TI |
1516 | for (i = 0; i < 2; i++) { |
1517 | substream = pcm_oss_file->streams[i]; | |
1518 | if (!substream) | |
1519 | continue; | |
1520 | runtime = substream->runtime; | |
bf1bbb5a | 1521 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
60686aa0 TI |
1522 | runtime->oss.prepare = 1; |
1523 | runtime->oss.buffer_used = 0; | |
1524 | runtime->oss.prev_hw_ptr_period = 0; | |
1525 | runtime->oss.period_ptr = 0; | |
1da177e4 LT |
1526 | } |
1527 | return 0; | |
1528 | } | |
1529 | ||
6ac77bc1 | 1530 | static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1531 | { |
6ac77bc1 | 1532 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1533 | int err; |
1534 | ||
1535 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1536 | if (substream != NULL) { | |
1537 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1538 | return err; | |
bf1bbb5a | 1539 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
1da177e4 LT |
1540 | } |
1541 | /* note: all errors from the start action are ignored */ | |
1542 | /* OSS apps do not know, how to handle them */ | |
1543 | return 0; | |
1544 | } | |
1545 | ||
6ac77bc1 | 1546 | static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size) |
1da177e4 | 1547 | { |
6ac77bc1 | 1548 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1549 | ssize_t result = 0; |
1550 | long res; | |
1551 | wait_queue_t wait; | |
1552 | ||
1553 | runtime = substream->runtime; | |
1554 | init_waitqueue_entry(&wait, current); | |
1555 | add_wait_queue(&runtime->sleep, &wait); | |
1556 | #ifdef OSS_DEBUG | |
006de267 | 1557 | printk(KERN_DEBUG "sync1: size = %li\n", size); |
1da177e4 LT |
1558 | #endif |
1559 | while (1) { | |
1560 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); | |
1561 | if (result > 0) { | |
1562 | runtime->oss.buffer_used = 0; | |
1563 | result = 0; | |
1564 | break; | |
1565 | } | |
1566 | if (result != 0 && result != -EAGAIN) | |
1567 | break; | |
1568 | result = 0; | |
1569 | set_current_state(TASK_INTERRUPTIBLE); | |
1570 | snd_pcm_stream_lock_irq(substream); | |
1571 | res = runtime->status->state; | |
1572 | snd_pcm_stream_unlock_irq(substream); | |
1573 | if (res != SNDRV_PCM_STATE_RUNNING) { | |
1574 | set_current_state(TASK_RUNNING); | |
1575 | break; | |
1576 | } | |
1577 | res = schedule_timeout(10 * HZ); | |
1578 | if (signal_pending(current)) { | |
1579 | result = -ERESTARTSYS; | |
1580 | break; | |
1581 | } | |
1582 | if (res == 0) { | |
1583 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); | |
1584 | result = -EIO; | |
1585 | break; | |
1586 | } | |
1587 | } | |
1588 | remove_wait_queue(&runtime->sleep, &wait); | |
1589 | return result; | |
1590 | } | |
1591 | ||
6ac77bc1 | 1592 | static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1593 | { |
1594 | int err = 0; | |
1595 | unsigned int saved_f_flags; | |
6ac77bc1 TI |
1596 | struct snd_pcm_substream *substream; |
1597 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1598 | snd_pcm_format_t format; |
1599 | unsigned long width; | |
1600 | size_t size; | |
1601 | ||
1602 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1603 | if (substream != NULL) { | |
1604 | runtime = substream->runtime; | |
9c323fcb | 1605 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
1606 | goto __direct; |
1607 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1608 | return err; | |
1609 | format = snd_pcm_oss_format_from(runtime->oss.format); | |
1610 | width = snd_pcm_format_physical_width(format); | |
e3a5d59a | 1611 | mutex_lock(&runtime->oss.params_lock); |
1da177e4 LT |
1612 | if (runtime->oss.buffer_used > 0) { |
1613 | #ifdef OSS_DEBUG | |
006de267 | 1614 | printk(KERN_DEBUG "sync: buffer_used\n"); |
1da177e4 LT |
1615 | #endif |
1616 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; | |
1617 | snd_pcm_format_set_silence(format, | |
1618 | runtime->oss.buffer + runtime->oss.buffer_used, | |
1619 | size); | |
1620 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); | |
e3a5d59a TI |
1621 | if (err < 0) { |
1622 | mutex_unlock(&runtime->oss.params_lock); | |
1da177e4 | 1623 | return err; |
e3a5d59a | 1624 | } |
1da177e4 LT |
1625 | } else if (runtime->oss.period_ptr > 0) { |
1626 | #ifdef OSS_DEBUG | |
006de267 | 1627 | printk(KERN_DEBUG "sync: period_ptr\n"); |
1da177e4 LT |
1628 | #endif |
1629 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; | |
1630 | snd_pcm_format_set_silence(format, | |
1631 | runtime->oss.buffer, | |
1632 | size * 8 / width); | |
1633 | err = snd_pcm_oss_sync1(substream, size); | |
e3a5d59a TI |
1634 | if (err < 0) { |
1635 | mutex_unlock(&runtime->oss.params_lock); | |
1da177e4 | 1636 | return err; |
e3a5d59a | 1637 | } |
1da177e4 LT |
1638 | } |
1639 | /* | |
1640 | * The ALSA's period might be a bit large than OSS one. | |
1641 | * Fill the remain portion of ALSA period with zeros. | |
1642 | */ | |
1643 | size = runtime->control->appl_ptr % runtime->period_size; | |
1644 | if (size > 0) { | |
1645 | size = runtime->period_size - size; | |
1646 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { | |
1647 | size = (runtime->frame_bits * size) / 8; | |
1648 | while (size > 0) { | |
1649 | mm_segment_t fs; | |
1650 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; | |
1651 | size -= size1; | |
1652 | size1 *= 8; | |
1653 | size1 /= runtime->sample_bits; | |
1654 | snd_pcm_format_set_silence(runtime->format, | |
1655 | runtime->oss.buffer, | |
1656 | size1); | |
4939c660 | 1657 | size1 /= runtime->channels; /* frames */ |
1da177e4 LT |
1658 | fs = snd_enter_user(); |
1659 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); | |
1660 | snd_leave_user(fs); | |
1661 | } | |
1662 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { | |
1663 | void __user *buffers[runtime->channels]; | |
1664 | memset(buffers, 0, runtime->channels * sizeof(void *)); | |
1665 | snd_pcm_lib_writev(substream, buffers, size); | |
1666 | } | |
1667 | } | |
e3a5d59a | 1668 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 LT |
1669 | /* |
1670 | * finish sync: drain the buffer | |
1671 | */ | |
1672 | __direct: | |
0df63e44 TI |
1673 | saved_f_flags = substream->f_flags; |
1674 | substream->f_flags &= ~O_NONBLOCK; | |
bf1bbb5a | 1675 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
0df63e44 | 1676 | substream->f_flags = saved_f_flags; |
1da177e4 LT |
1677 | if (err < 0) |
1678 | return err; | |
1679 | runtime->oss.prepare = 1; | |
1680 | } | |
1681 | ||
1682 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1683 | if (substream != NULL) { | |
1684 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1685 | return err; | |
1686 | runtime = substream->runtime; | |
bf1bbb5a | 1687 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
1da177e4 LT |
1688 | if (err < 0) |
1689 | return err; | |
1690 | runtime->oss.buffer_used = 0; | |
1691 | runtime->oss.prepare = 1; | |
1692 | } | |
1693 | return 0; | |
1694 | } | |
1695 | ||
6ac77bc1 | 1696 | static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate) |
1da177e4 LT |
1697 | { |
1698 | int idx; | |
1699 | ||
1700 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1701 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1702 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1703 | if (substream == NULL) |
1704 | continue; | |
1705 | runtime = substream->runtime; | |
1706 | if (rate < 1000) | |
1707 | rate = 1000; | |
1708 | else if (rate > 192000) | |
1709 | rate = 192000; | |
1710 | if (runtime->oss.rate != rate) { | |
1711 | runtime->oss.params = 1; | |
1712 | runtime->oss.rate = rate; | |
1713 | } | |
1714 | } | |
1715 | return snd_pcm_oss_get_rate(pcm_oss_file); | |
1716 | } | |
1717 | ||
6ac77bc1 | 1718 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1719 | { |
6ac77bc1 | 1720 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1721 | int err; |
1722 | ||
1723 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1724 | return err; | |
1725 | return substream->runtime->oss.rate; | |
1726 | } | |
1727 | ||
6ac77bc1 | 1728 | static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels) |
1da177e4 LT |
1729 | { |
1730 | int idx; | |
1731 | if (channels < 1) | |
1732 | channels = 1; | |
1733 | if (channels > 128) | |
1734 | return -EINVAL; | |
1735 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1736 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1737 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1738 | if (substream == NULL) |
1739 | continue; | |
1740 | runtime = substream->runtime; | |
1741 | if (runtime->oss.channels != channels) { | |
1742 | runtime->oss.params = 1; | |
1743 | runtime->oss.channels = channels; | |
1744 | } | |
1745 | } | |
1746 | return snd_pcm_oss_get_channels(pcm_oss_file); | |
1747 | } | |
1748 | ||
6ac77bc1 | 1749 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1750 | { |
6ac77bc1 | 1751 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1752 | int err; |
1753 | ||
1754 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1755 | return err; | |
1756 | return substream->runtime->oss.channels; | |
1757 | } | |
1758 | ||
6ac77bc1 | 1759 | static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1760 | { |
6ac77bc1 | 1761 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1762 | int err; |
1763 | ||
1764 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1765 | return err; | |
1766 | return substream->runtime->oss.period_bytes; | |
1767 | } | |
1768 | ||
6ac77bc1 | 1769 | static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1770 | { |
6ac77bc1 | 1771 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1772 | int err; |
1773 | int direct; | |
6ac77bc1 | 1774 | struct snd_pcm_hw_params *params; |
1da177e4 | 1775 | unsigned int formats = 0; |
6ac77bc1 | 1776 | struct snd_mask format_mask; |
1da177e4 LT |
1777 | int fmt; |
1778 | ||
1779 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1780 | return err; | |
9c323fcb | 1781 | if (atomic_read(&substream->mmap_count)) |
1da177e4 | 1782 | direct = 1; |
060d77b9 TI |
1783 | else |
1784 | direct = substream->oss.setup.direct; | |
1da177e4 LT |
1785 | if (!direct) |
1786 | return AFMT_MU_LAW | AFMT_U8 | | |
1787 | AFMT_S16_LE | AFMT_S16_BE | | |
1788 | AFMT_S8 | AFMT_U16_LE | | |
24038a25 TI |
1789 | AFMT_U16_BE | |
1790 | AFMT_S32_LE | AFMT_S32_BE | | |
7924f0ca | 1791 | AFMT_S24_LE | AFMT_S24_BE | |
24038a25 | 1792 | AFMT_S24_PACKED; |
1da177e4 LT |
1793 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
1794 | if (!params) | |
1795 | return -ENOMEM; | |
1796 | _snd_pcm_hw_params_any(params); | |
1797 | err = snd_pcm_hw_refine(substream, params); | |
1798 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1799 | kfree(params); | |
7eaa943c TI |
1800 | if (err < 0) |
1801 | return err; | |
1da177e4 LT |
1802 | for (fmt = 0; fmt < 32; ++fmt) { |
1803 | if (snd_mask_test(&format_mask, fmt)) { | |
1804 | int f = snd_pcm_oss_format_to(fmt); | |
1805 | if (f >= 0) | |
1806 | formats |= f; | |
1807 | } | |
1808 | } | |
1809 | return formats; | |
1810 | } | |
1811 | ||
6ac77bc1 | 1812 | static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format) |
1da177e4 LT |
1813 | { |
1814 | int formats, idx; | |
1815 | ||
1816 | if (format != AFMT_QUERY) { | |
1817 | formats = snd_pcm_oss_get_formats(pcm_oss_file); | |
5c59e09d SF |
1818 | if (formats < 0) |
1819 | return formats; | |
1da177e4 LT |
1820 | if (!(formats & format)) |
1821 | format = AFMT_U8; | |
1822 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1823 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1824 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1825 | if (substream == NULL) |
1826 | continue; | |
1827 | runtime = substream->runtime; | |
1828 | if (runtime->oss.format != format) { | |
1829 | runtime->oss.params = 1; | |
1830 | runtime->oss.format = format; | |
1831 | } | |
1832 | } | |
1833 | } | |
1834 | return snd_pcm_oss_get_format(pcm_oss_file); | |
1835 | } | |
1836 | ||
6ac77bc1 | 1837 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1838 | { |
6ac77bc1 | 1839 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1840 | int err; |
1841 | ||
1842 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1843 | return err; | |
1844 | return substream->runtime->oss.format; | |
1845 | } | |
1846 | ||
6ac77bc1 | 1847 | static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide) |
1da177e4 | 1848 | { |
6ac77bc1 | 1849 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1850 | |
1851 | if (substream == NULL) | |
1852 | return 0; | |
1853 | runtime = substream->runtime; | |
1854 | if (subdivide == 0) { | |
1855 | subdivide = runtime->oss.subdivision; | |
1856 | if (subdivide == 0) | |
1857 | subdivide = 1; | |
1858 | return subdivide; | |
1859 | } | |
1860 | if (runtime->oss.subdivision || runtime->oss.fragshift) | |
1861 | return -EINVAL; | |
1862 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && | |
1863 | subdivide != 8 && subdivide != 16) | |
1864 | return -EINVAL; | |
1865 | runtime->oss.subdivision = subdivide; | |
1866 | runtime->oss.params = 1; | |
1867 | return subdivide; | |
1868 | } | |
1869 | ||
6ac77bc1 | 1870 | static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide) |
1da177e4 LT |
1871 | { |
1872 | int err = -EINVAL, idx; | |
1873 | ||
1874 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 | 1875 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1876 | if (substream == NULL) |
1877 | continue; | |
1878 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) | |
1879 | return err; | |
1880 | } | |
1881 | return err; | |
1882 | } | |
1883 | ||
6ac77bc1 | 1884 | static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val) |
1da177e4 | 1885 | { |
6ac77bc1 | 1886 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1887 | |
1888 | if (substream == NULL) | |
1889 | return 0; | |
1890 | runtime = substream->runtime; | |
1891 | if (runtime->oss.subdivision || runtime->oss.fragshift) | |
1892 | return -EINVAL; | |
1893 | runtime->oss.fragshift = val & 0xffff; | |
1894 | runtime->oss.maxfrags = (val >> 16) & 0xffff; | |
1895 | if (runtime->oss.fragshift < 4) /* < 16 */ | |
1896 | runtime->oss.fragshift = 4; | |
1897 | if (runtime->oss.maxfrags < 2) | |
1898 | runtime->oss.maxfrags = 2; | |
1899 | runtime->oss.params = 1; | |
1900 | return 0; | |
1901 | } | |
1902 | ||
6ac77bc1 | 1903 | static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val) |
1da177e4 LT |
1904 | { |
1905 | int err = -EINVAL, idx; | |
1906 | ||
1907 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 | 1908 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1909 | if (substream == NULL) |
1910 | continue; | |
1911 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) | |
1912 | return err; | |
1913 | } | |
1914 | return err; | |
1915 | } | |
1916 | ||
1917 | static int snd_pcm_oss_nonblock(struct file * file) | |
1918 | { | |
db1dd4d3 | 1919 | spin_lock(&file->f_lock); |
1da177e4 | 1920 | file->f_flags |= O_NONBLOCK; |
db1dd4d3 | 1921 | spin_unlock(&file->f_lock); |
1da177e4 LT |
1922 | return 0; |
1923 | } | |
1924 | ||
6ac77bc1 | 1925 | static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res) |
1da177e4 LT |
1926 | { |
1927 | ||
1928 | if (substream == NULL) { | |
1929 | res &= ~DSP_CAP_DUPLEX; | |
1930 | return res; | |
1931 | } | |
1932 | #ifdef DSP_CAP_MULTI | |
1933 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1934 | if (substream->pstr->substream_count > 1) | |
1935 | res |= DSP_CAP_MULTI; | |
1936 | #endif | |
1937 | /* DSP_CAP_REALTIME is set all times: */ | |
1938 | /* all ALSA drivers can return actual pointer in ring buffer */ | |
1939 | #if defined(DSP_CAP_REALTIME) && 0 | |
1940 | { | |
6ac77bc1 | 1941 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1942 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
1943 | res &= ~DSP_CAP_REALTIME; | |
1944 | } | |
1945 | #endif | |
1946 | return res; | |
1947 | } | |
1948 | ||
6ac77bc1 | 1949 | static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1950 | { |
1951 | int result, idx; | |
1952 | ||
1953 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; | |
1954 | for (idx = 0; idx < 2; idx++) { | |
6ac77bc1 | 1955 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1956 | result = snd_pcm_oss_get_caps1(substream, result); |
1957 | } | |
1958 | result |= 0x0001; /* revision - same as SB AWE 64 */ | |
1959 | return result; | |
1960 | } | |
1961 | ||
f240406b JK |
1962 | static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, |
1963 | snd_pcm_uframes_t hw_ptr) | |
1da177e4 | 1964 | { |
6ac77bc1 | 1965 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1966 | snd_pcm_uframes_t appl_ptr; |
1967 | appl_ptr = hw_ptr + runtime->buffer_size; | |
1968 | appl_ptr %= runtime->boundary; | |
1969 | runtime->control->appl_ptr = appl_ptr; | |
1970 | } | |
1971 | ||
6ac77bc1 | 1972 | static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger) |
1da177e4 | 1973 | { |
6ac77bc1 TI |
1974 | struct snd_pcm_runtime *runtime; |
1975 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; | |
1da177e4 LT |
1976 | int err, cmd; |
1977 | ||
1978 | #ifdef OSS_DEBUG | |
006de267 | 1979 | printk(KERN_DEBUG "pcm_oss: trigger = 0x%x\n", trigger); |
1da177e4 LT |
1980 | #endif |
1981 | ||
1982 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1983 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1984 | ||
1985 | if (psubstream) { | |
1986 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) | |
1987 | return err; | |
1988 | } | |
1989 | if (csubstream) { | |
1990 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) | |
1991 | return err; | |
1992 | } | |
1993 | if (psubstream) { | |
1994 | runtime = psubstream->runtime; | |
1995 | if (trigger & PCM_ENABLE_OUTPUT) { | |
1996 | if (runtime->oss.trigger) | |
1997 | goto _skip1; | |
9c323fcb | 1998 | if (atomic_read(&psubstream->mmap_count)) |
f240406b JK |
1999 | snd_pcm_oss_simulate_fill(psubstream, |
2000 | get_hw_ptr_period(runtime)); | |
1da177e4 LT |
2001 | runtime->oss.trigger = 1; |
2002 | runtime->start_threshold = 1; | |
2003 | cmd = SNDRV_PCM_IOCTL_START; | |
2004 | } else { | |
2005 | if (!runtime->oss.trigger) | |
2006 | goto _skip1; | |
2007 | runtime->oss.trigger = 0; | |
2008 | runtime->start_threshold = runtime->boundary; | |
2009 | cmd = SNDRV_PCM_IOCTL_DROP; | |
2010 | runtime->oss.prepare = 1; | |
2011 | } | |
bf1bbb5a | 2012 | err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL); |
1da177e4 LT |
2013 | if (err < 0) |
2014 | return err; | |
2015 | } | |
2016 | _skip1: | |
2017 | if (csubstream) { | |
2018 | runtime = csubstream->runtime; | |
2019 | if (trigger & PCM_ENABLE_INPUT) { | |
2020 | if (runtime->oss.trigger) | |
2021 | goto _skip2; | |
2022 | runtime->oss.trigger = 1; | |
2023 | runtime->start_threshold = 1; | |
2024 | cmd = SNDRV_PCM_IOCTL_START; | |
2025 | } else { | |
2026 | if (!runtime->oss.trigger) | |
2027 | goto _skip2; | |
2028 | runtime->oss.trigger = 0; | |
2029 | runtime->start_threshold = runtime->boundary; | |
2030 | cmd = SNDRV_PCM_IOCTL_DROP; | |
2031 | runtime->oss.prepare = 1; | |
2032 | } | |
bf1bbb5a | 2033 | err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL); |
1da177e4 LT |
2034 | if (err < 0) |
2035 | return err; | |
2036 | } | |
2037 | _skip2: | |
2038 | return 0; | |
2039 | } | |
2040 | ||
6ac77bc1 | 2041 | static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 2042 | { |
6ac77bc1 | 2043 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
1da177e4 LT |
2044 | int result = 0; |
2045 | ||
2046 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2047 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2048 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) | |
2049 | result |= PCM_ENABLE_OUTPUT; | |
2050 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) | |
2051 | result |= PCM_ENABLE_INPUT; | |
2052 | return result; | |
2053 | } | |
2054 | ||
6ac77bc1 | 2055 | static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 2056 | { |
6ac77bc1 TI |
2057 | struct snd_pcm_substream *substream; |
2058 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2059 | snd_pcm_sframes_t delay; |
2060 | int err; | |
2061 | ||
2062 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2063 | if (substream == NULL) | |
2064 | return -EINVAL; | |
2065 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
2066 | return err; | |
2067 | runtime = substream->runtime; | |
2068 | if (runtime->oss.params || runtime->oss.prepare) | |
2069 | return 0; | |
bf1bbb5a | 2070 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
1da177e4 LT |
2071 | if (err == -EPIPE) |
2072 | delay = 0; /* hack for broken OSS applications */ | |
2073 | else if (err < 0) | |
2074 | return err; | |
2075 | return snd_pcm_oss_bytes(substream, delay); | |
2076 | } | |
2077 | ||
6ac77bc1 | 2078 | static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info) |
1da177e4 | 2079 | { |
6ac77bc1 TI |
2080 | struct snd_pcm_substream *substream; |
2081 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2082 | snd_pcm_sframes_t delay; |
2083 | int fixup; | |
2084 | struct count_info info; | |
2085 | int err; | |
2086 | ||
2087 | if (_info == NULL) | |
2088 | return -EFAULT; | |
2089 | substream = pcm_oss_file->streams[stream]; | |
2090 | if (substream == NULL) | |
2091 | return -EINVAL; | |
2092 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
2093 | return err; | |
2094 | runtime = substream->runtime; | |
2095 | if (runtime->oss.params || runtime->oss.prepare) { | |
2096 | memset(&info, 0, sizeof(info)); | |
2097 | if (copy_to_user(_info, &info, sizeof(info))) | |
2098 | return -EFAULT; | |
2099 | return 0; | |
2100 | } | |
2101 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
2102 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); | |
2103 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { | |
2104 | err = 0; | |
2105 | delay = 0; | |
2106 | fixup = 0; | |
2107 | } else { | |
2108 | fixup = runtime->oss.buffer_used; | |
2109 | } | |
2110 | } else { | |
2111 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); | |
2112 | fixup = -runtime->oss.buffer_used; | |
2113 | } | |
2114 | if (err < 0) | |
2115 | return err; | |
2116 | info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size); | |
9c323fcb | 2117 | if (atomic_read(&substream->mmap_count)) { |
1da177e4 | 2118 | snd_pcm_sframes_t n; |
f240406b JK |
2119 | delay = get_hw_ptr_period(runtime); |
2120 | n = delay - runtime->oss.prev_hw_ptr_period; | |
1da177e4 LT |
2121 | if (n < 0) |
2122 | n += runtime->boundary; | |
2123 | info.blocks = n / runtime->period_size; | |
f240406b | 2124 | runtime->oss.prev_hw_ptr_period = delay; |
1da177e4 LT |
2125 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
2126 | snd_pcm_oss_simulate_fill(substream, delay); | |
2127 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; | |
2128 | } else { | |
5ac0fab9 | 2129 | delay = snd_pcm_oss_bytes(substream, delay); |
fb4bd0ad | 2130 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
060d77b9 | 2131 | if (substream->oss.setup.buggyptr) |
10f69f9e TI |
2132 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
2133 | else | |
2134 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; | |
1da177e4 | 2135 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
fb4bd0ad | 2136 | } else { |
5ac0fab9 JK |
2137 | delay += fixup; |
2138 | info.blocks = delay / runtime->oss.period_bytes; | |
1da177e4 | 2139 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
fb4bd0ad | 2140 | } |
1da177e4 LT |
2141 | } |
2142 | if (copy_to_user(_info, &info, sizeof(info))) | |
2143 | return -EFAULT; | |
2144 | return 0; | |
2145 | } | |
2146 | ||
6ac77bc1 | 2147 | static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info) |
1da177e4 | 2148 | { |
6ac77bc1 TI |
2149 | struct snd_pcm_substream *substream; |
2150 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2151 | snd_pcm_sframes_t avail; |
2152 | int fixup; | |
2153 | struct audio_buf_info info; | |
2154 | int err; | |
2155 | ||
2156 | if (_info == NULL) | |
2157 | return -EFAULT; | |
2158 | substream = pcm_oss_file->streams[stream]; | |
2159 | if (substream == NULL) | |
2160 | return -EINVAL; | |
2161 | runtime = substream->runtime; | |
2162 | ||
2163 | if (runtime->oss.params && | |
2164 | (err = snd_pcm_oss_change_params(substream)) < 0) | |
2165 | return err; | |
2166 | ||
2167 | info.fragsize = runtime->oss.period_bytes; | |
2168 | info.fragstotal = runtime->periods; | |
2169 | if (runtime->oss.prepare) { | |
2170 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
2171 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; | |
2172 | info.fragments = runtime->oss.periods; | |
2173 | } else { | |
2174 | info.bytes = 0; | |
2175 | info.fragments = 0; | |
2176 | } | |
2177 | } else { | |
2178 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
2179 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); | |
2180 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { | |
2181 | avail = runtime->buffer_size; | |
2182 | err = 0; | |
2183 | fixup = 0; | |
2184 | } else { | |
2185 | avail = runtime->buffer_size - avail; | |
2186 | fixup = -runtime->oss.buffer_used; | |
2187 | } | |
2188 | } else { | |
2189 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); | |
2190 | fixup = runtime->oss.buffer_used; | |
2191 | } | |
2192 | if (err < 0) | |
2193 | return err; | |
2194 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; | |
2195 | info.fragments = info.bytes / runtime->oss.period_bytes; | |
2196 | } | |
2197 | ||
2198 | #ifdef OSS_DEBUG | |
006de267 TI |
2199 | printk(KERN_DEBUG "pcm_oss: space: bytes = %i, fragments = %i, " |
2200 | "fragstotal = %i, fragsize = %i\n", | |
2201 | info.bytes, info.fragments, info.fragstotal, info.fragsize); | |
1da177e4 LT |
2202 | #endif |
2203 | if (copy_to_user(_info, &info, sizeof(info))) | |
2204 | return -EFAULT; | |
2205 | return 0; | |
2206 | } | |
2207 | ||
6ac77bc1 | 2208 | static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info) |
1da177e4 LT |
2209 | { |
2210 | // it won't be probably implemented | |
2211 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); | |
2212 | return -EINVAL; | |
2213 | } | |
2214 | ||
060d77b9 | 2215 | static const char *strip_task_path(const char *path) |
1da177e4 | 2216 | { |
060d77b9 TI |
2217 | const char *ptr, *ptrl = NULL; |
2218 | for (ptr = path; *ptr; ptr++) { | |
1da177e4 LT |
2219 | if (*ptr == '/') |
2220 | ptrl = ptr + 1; | |
1da177e4 | 2221 | } |
060d77b9 TI |
2222 | return ptrl; |
2223 | } | |
2224 | ||
2225 | static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, | |
2226 | const char *task_name, | |
2227 | struct snd_pcm_oss_setup *rsetup) | |
2228 | { | |
2229 | struct snd_pcm_oss_setup *setup; | |
2230 | ||
2231 | mutex_lock(&pcm->streams[stream].oss.setup_mutex); | |
2232 | do { | |
2233 | for (setup = pcm->streams[stream].oss.setup_list; setup; | |
2234 | setup = setup->next) { | |
2235 | if (!strcmp(setup->task_name, task_name)) | |
2236 | goto out; | |
1da177e4 | 2237 | } |
060d77b9 TI |
2238 | } while ((task_name = strip_task_path(task_name)) != NULL); |
2239 | out: | |
2240 | if (setup) | |
2241 | *rsetup = *setup; | |
1a60d4c5 | 2242 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
1da177e4 LT |
2243 | } |
2244 | ||
3bf75f9b TI |
2245 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
2246 | { | |
2247 | struct snd_pcm_runtime *runtime; | |
2248 | runtime = substream->runtime; | |
2249 | vfree(runtime->oss.buffer); | |
2250 | runtime->oss.buffer = NULL; | |
2251 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS | |
2252 | snd_pcm_oss_plugin_clear(substream); | |
2253 | #endif | |
2254 | substream->oss.oss = 0; | |
2255 | } | |
2256 | ||
6ac77bc1 TI |
2257 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
2258 | struct snd_pcm_oss_setup *setup, | |
1da177e4 LT |
2259 | int minor) |
2260 | { | |
6ac77bc1 | 2261 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
2262 | |
2263 | substream->oss.oss = 1; | |
060d77b9 | 2264 | substream->oss.setup = *setup; |
3bf75f9b | 2265 | if (setup->nonblock) |
0df63e44 | 2266 | substream->f_flags |= O_NONBLOCK; |
1576274d | 2267 | else if (setup->block) |
0df63e44 | 2268 | substream->f_flags &= ~O_NONBLOCK; |
1da177e4 LT |
2269 | runtime = substream->runtime; |
2270 | runtime->oss.params = 1; | |
2271 | runtime->oss.trigger = 1; | |
2272 | runtime->oss.rate = 8000; | |
e3a5d59a | 2273 | mutex_init(&runtime->oss.params_lock); |
1da177e4 LT |
2274 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { |
2275 | case SNDRV_MINOR_OSS_PCM_8: | |
2276 | runtime->oss.format = AFMT_U8; | |
2277 | break; | |
2278 | case SNDRV_MINOR_OSS_PCM_16: | |
2279 | runtime->oss.format = AFMT_S16_LE; | |
2280 | break; | |
2281 | default: | |
2282 | runtime->oss.format = AFMT_MU_LAW; | |
2283 | } | |
2284 | runtime->oss.channels = 1; | |
2285 | runtime->oss.fragshift = 0; | |
2286 | runtime->oss.maxfrags = 0; | |
2287 | runtime->oss.subdivision = 0; | |
3bf75f9b | 2288 | substream->pcm_release = snd_pcm_oss_release_substream; |
1da177e4 LT |
2289 | } |
2290 | ||
6ac77bc1 | 2291 | static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
2292 | { |
2293 | int cidx; | |
7eaa943c TI |
2294 | if (!pcm_oss_file) |
2295 | return 0; | |
1da177e4 | 2296 | for (cidx = 0; cidx < 2; ++cidx) { |
6ac77bc1 | 2297 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
3bf75f9b TI |
2298 | if (substream) |
2299 | snd_pcm_release_substream(substream); | |
1da177e4 LT |
2300 | } |
2301 | kfree(pcm_oss_file); | |
2302 | return 0; | |
2303 | } | |
2304 | ||
2305 | static int snd_pcm_oss_open_file(struct file *file, | |
6ac77bc1 TI |
2306 | struct snd_pcm *pcm, |
2307 | struct snd_pcm_oss_file **rpcm_oss_file, | |
1da177e4 | 2308 | int minor, |
060d77b9 | 2309 | struct snd_pcm_oss_setup *setup) |
1da177e4 | 2310 | { |
3bf75f9b | 2311 | int idx, err; |
6ac77bc1 | 2312 | struct snd_pcm_oss_file *pcm_oss_file; |
3bf75f9b | 2313 | struct snd_pcm_substream *substream; |
aeb5d727 | 2314 | fmode_t f_mode = file->f_mode; |
1da177e4 | 2315 | |
7eaa943c TI |
2316 | if (rpcm_oss_file) |
2317 | *rpcm_oss_file = NULL; | |
1da177e4 | 2318 | |
ca2c0966 | 2319 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
1da177e4 LT |
2320 | if (pcm_oss_file == NULL) |
2321 | return -ENOMEM; | |
2322 | ||
2323 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && | |
2324 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) | |
2325 | f_mode = FMODE_WRITE; | |
3bf75f9b | 2326 | |
0df63e44 | 2327 | file->f_flags &= ~O_APPEND; |
3bf75f9b | 2328 | for (idx = 0; idx < 2; idx++) { |
060d77b9 | 2329 | if (setup[idx].disable) |
3bf75f9b | 2330 | continue; |
6cb53e7e TI |
2331 | if (! pcm->streams[idx].substream_count) |
2332 | continue; /* no matching substream */ | |
3bf75f9b TI |
2333 | if (idx == SNDRV_PCM_STREAM_PLAYBACK) { |
2334 | if (! (f_mode & FMODE_WRITE)) | |
2335 | continue; | |
2336 | } else { | |
2337 | if (! (f_mode & FMODE_READ)) | |
2338 | continue; | |
2339 | } | |
2340 | err = snd_pcm_open_substream(pcm, idx, file, &substream); | |
2341 | if (err < 0) { | |
1da177e4 LT |
2342 | snd_pcm_oss_release_file(pcm_oss_file); |
2343 | return err; | |
2344 | } | |
3bf75f9b TI |
2345 | |
2346 | pcm_oss_file->streams[idx] = substream; | |
1576274d | 2347 | substream->file = pcm_oss_file; |
060d77b9 | 2348 | snd_pcm_oss_init_substream(substream, &setup[idx], minor); |
1da177e4 LT |
2349 | } |
2350 | ||
bbdc1b7d | 2351 | if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) { |
1da177e4 LT |
2352 | snd_pcm_oss_release_file(pcm_oss_file); |
2353 | return -EINVAL; | |
2354 | } | |
1da177e4 LT |
2355 | |
2356 | file->private_data = pcm_oss_file; | |
7eaa943c TI |
2357 | if (rpcm_oss_file) |
2358 | *rpcm_oss_file = pcm_oss_file; | |
1da177e4 LT |
2359 | return 0; |
2360 | } | |
2361 | ||
2362 | ||
93f2e378 TI |
2363 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
2364 | { | |
2365 | unsigned int idx; | |
2366 | ||
7eaa943c TI |
2367 | if (snd_BUG_ON(!task || !name || size < 2)) |
2368 | return -EINVAL; | |
93f2e378 TI |
2369 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) |
2370 | name[idx] = task->comm[idx]; | |
2371 | name[idx] = '\0'; | |
2372 | return 0; | |
2373 | } | |
2374 | ||
1da177e4 LT |
2375 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
2376 | { | |
1da177e4 LT |
2377 | int err; |
2378 | char task_name[32]; | |
6ac77bc1 TI |
2379 | struct snd_pcm *pcm; |
2380 | struct snd_pcm_oss_file *pcm_oss_file; | |
060d77b9 | 2381 | struct snd_pcm_oss_setup setup[2]; |
1da177e4 LT |
2382 | int nonblock; |
2383 | wait_queue_t wait; | |
2384 | ||
02f4865f TI |
2385 | err = nonseekable_open(inode, file); |
2386 | if (err < 0) | |
2387 | return err; | |
2388 | ||
f87135f5 CL |
2389 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
2390 | SNDRV_OSS_DEVICE_TYPE_PCM); | |
1da177e4 LT |
2391 | if (pcm == NULL) { |
2392 | err = -ENODEV; | |
2393 | goto __error1; | |
2394 | } | |
2395 | err = snd_card_file_add(pcm->card, file); | |
2396 | if (err < 0) | |
2397 | goto __error1; | |
2398 | if (!try_module_get(pcm->card->module)) { | |
2399 | err = -EFAULT; | |
2400 | goto __error2; | |
2401 | } | |
2402 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { | |
2403 | err = -EFAULT; | |
2404 | goto __error; | |
2405 | } | |
1576274d | 2406 | memset(setup, 0, sizeof(setup)); |
1da177e4 | 2407 | if (file->f_mode & FMODE_WRITE) |
060d77b9 TI |
2408 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
2409 | task_name, &setup[0]); | |
1da177e4 | 2410 | if (file->f_mode & FMODE_READ) |
060d77b9 TI |
2411 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, |
2412 | task_name, &setup[1]); | |
1da177e4 LT |
2413 | |
2414 | nonblock = !!(file->f_flags & O_NONBLOCK); | |
1da177e4 LT |
2415 | if (!nonblock) |
2416 | nonblock = nonblock_open; | |
2417 | ||
2418 | init_waitqueue_entry(&wait, current); | |
2419 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2420 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2421 | while (1) { |
2422 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, | |
3bf75f9b | 2423 | iminor(inode), setup); |
1da177e4 LT |
2424 | if (err >= 0) |
2425 | break; | |
2426 | if (err == -EAGAIN) { | |
2427 | if (nonblock) { | |
2428 | err = -EBUSY; | |
2429 | break; | |
2430 | } | |
2431 | } else | |
2432 | break; | |
2433 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2434 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2435 | schedule(); |
1a60d4c5 | 2436 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2437 | if (signal_pending(current)) { |
2438 | err = -ERESTARTSYS; | |
2439 | break; | |
2440 | } | |
2441 | } | |
2442 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2443 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2444 | if (err < 0) |
2445 | goto __error; | |
2446 | return err; | |
2447 | ||
2448 | __error: | |
2449 | module_put(pcm->card->module); | |
2450 | __error2: | |
2451 | snd_card_file_remove(pcm->card, file); | |
2452 | __error1: | |
2453 | return err; | |
2454 | } | |
2455 | ||
2456 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) | |
2457 | { | |
6ac77bc1 TI |
2458 | struct snd_pcm *pcm; |
2459 | struct snd_pcm_substream *substream; | |
2460 | struct snd_pcm_oss_file *pcm_oss_file; | |
1da177e4 LT |
2461 | |
2462 | pcm_oss_file = file->private_data; | |
2463 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2464 | if (substream == NULL) | |
2465 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
7eaa943c TI |
2466 | if (snd_BUG_ON(!substream)) |
2467 | return -ENXIO; | |
1da177e4 | 2468 | pcm = substream->pcm; |
de1b8b93 TI |
2469 | if (!pcm->card->shutdown) |
2470 | snd_pcm_oss_sync(pcm_oss_file); | |
1a60d4c5 | 2471 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2472 | snd_pcm_oss_release_file(pcm_oss_file); |
1a60d4c5 | 2473 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2474 | wake_up(&pcm->open_wait); |
2475 | module_put(pcm->card->module); | |
2476 | snd_card_file_remove(pcm->card, file); | |
2477 | return 0; | |
2478 | } | |
2479 | ||
2480 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2481 | { | |
6ac77bc1 | 2482 | struct snd_pcm_oss_file *pcm_oss_file; |
1da177e4 LT |
2483 | int __user *p = (int __user *)arg; |
2484 | int res; | |
2485 | ||
2486 | pcm_oss_file = file->private_data; | |
2487 | if (cmd == OSS_GETVERSION) | |
2488 | return put_user(SNDRV_OSS_VERSION, p); | |
2489 | if (cmd == OSS_ALSAEMULVER) | |
2490 | return put_user(1, p); | |
2491 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) | |
2492 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ | |
6ac77bc1 | 2493 | struct snd_pcm_substream *substream; |
1da177e4 LT |
2494 | int idx; |
2495 | for (idx = 0; idx < 2; ++idx) { | |
2496 | substream = pcm_oss_file->streams[idx]; | |
2497 | if (substream != NULL) | |
2498 | break; | |
2499 | } | |
7eaa943c TI |
2500 | if (snd_BUG_ON(idx >= 2)) |
2501 | return -ENXIO; | |
1da177e4 LT |
2502 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); |
2503 | } | |
2504 | #endif | |
2505 | if (((cmd >> 8) & 0xff) != 'P') | |
2506 | return -EINVAL; | |
2507 | #ifdef OSS_DEBUG | |
006de267 | 2508 | printk(KERN_DEBUG "pcm_oss: ioctl = 0x%x\n", cmd); |
1da177e4 LT |
2509 | #endif |
2510 | switch (cmd) { | |
2511 | case SNDCTL_DSP_RESET: | |
2512 | return snd_pcm_oss_reset(pcm_oss_file); | |
2513 | case SNDCTL_DSP_SYNC: | |
2514 | return snd_pcm_oss_sync(pcm_oss_file); | |
2515 | case SNDCTL_DSP_SPEED: | |
2516 | if (get_user(res, p)) | |
2517 | return -EFAULT; | |
2518 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) | |
2519 | return res; | |
2520 | return put_user(res, p); | |
2521 | case SOUND_PCM_READ_RATE: | |
2522 | res = snd_pcm_oss_get_rate(pcm_oss_file); | |
2523 | if (res < 0) | |
2524 | return res; | |
2525 | return put_user(res, p); | |
2526 | case SNDCTL_DSP_STEREO: | |
2527 | if (get_user(res, p)) | |
2528 | return -EFAULT; | |
2529 | res = res > 0 ? 2 : 1; | |
2530 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) | |
2531 | return res; | |
2532 | return put_user(--res, p); | |
2533 | case SNDCTL_DSP_GETBLKSIZE: | |
2534 | res = snd_pcm_oss_get_block_size(pcm_oss_file); | |
2535 | if (res < 0) | |
2536 | return res; | |
2537 | return put_user(res, p); | |
2538 | case SNDCTL_DSP_SETFMT: | |
2539 | if (get_user(res, p)) | |
2540 | return -EFAULT; | |
2541 | res = snd_pcm_oss_set_format(pcm_oss_file, res); | |
2542 | if (res < 0) | |
2543 | return res; | |
2544 | return put_user(res, p); | |
2545 | case SOUND_PCM_READ_BITS: | |
2546 | res = snd_pcm_oss_get_format(pcm_oss_file); | |
2547 | if (res < 0) | |
2548 | return res; | |
2549 | return put_user(res, p); | |
2550 | case SNDCTL_DSP_CHANNELS: | |
2551 | if (get_user(res, p)) | |
2552 | return -EFAULT; | |
2553 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); | |
2554 | if (res < 0) | |
2555 | return res; | |
2556 | return put_user(res, p); | |
2557 | case SOUND_PCM_READ_CHANNELS: | |
2558 | res = snd_pcm_oss_get_channels(pcm_oss_file); | |
2559 | if (res < 0) | |
2560 | return res; | |
2561 | return put_user(res, p); | |
2562 | case SOUND_PCM_WRITE_FILTER: | |
2563 | case SOUND_PCM_READ_FILTER: | |
2564 | return -EIO; | |
2565 | case SNDCTL_DSP_POST: | |
2566 | return snd_pcm_oss_post(pcm_oss_file); | |
2567 | case SNDCTL_DSP_SUBDIVIDE: | |
2568 | if (get_user(res, p)) | |
2569 | return -EFAULT; | |
2570 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); | |
2571 | if (res < 0) | |
2572 | return res; | |
2573 | return put_user(res, p); | |
2574 | case SNDCTL_DSP_SETFRAGMENT: | |
2575 | if (get_user(res, p)) | |
2576 | return -EFAULT; | |
2577 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); | |
2578 | case SNDCTL_DSP_GETFMTS: | |
2579 | res = snd_pcm_oss_get_formats(pcm_oss_file); | |
2580 | if (res < 0) | |
2581 | return res; | |
2582 | return put_user(res, p); | |
2583 | case SNDCTL_DSP_GETOSPACE: | |
2584 | case SNDCTL_DSP_GETISPACE: | |
2585 | return snd_pcm_oss_get_space(pcm_oss_file, | |
2586 | cmd == SNDCTL_DSP_GETISPACE ? | |
2587 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2588 | (struct audio_buf_info __user *) arg); | |
2589 | case SNDCTL_DSP_NONBLOCK: | |
2590 | return snd_pcm_oss_nonblock(file); | |
2591 | case SNDCTL_DSP_GETCAPS: | |
2592 | res = snd_pcm_oss_get_caps(pcm_oss_file); | |
2593 | if (res < 0) | |
2594 | return res; | |
2595 | return put_user(res, p); | |
2596 | case SNDCTL_DSP_GETTRIGGER: | |
2597 | res = snd_pcm_oss_get_trigger(pcm_oss_file); | |
2598 | if (res < 0) | |
2599 | return res; | |
2600 | return put_user(res, p); | |
2601 | case SNDCTL_DSP_SETTRIGGER: | |
2602 | if (get_user(res, p)) | |
2603 | return -EFAULT; | |
2604 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); | |
2605 | case SNDCTL_DSP_GETIPTR: | |
2606 | case SNDCTL_DSP_GETOPTR: | |
2607 | return snd_pcm_oss_get_ptr(pcm_oss_file, | |
2608 | cmd == SNDCTL_DSP_GETIPTR ? | |
2609 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2610 | (struct count_info __user *) arg); | |
2611 | case SNDCTL_DSP_MAPINBUF: | |
2612 | case SNDCTL_DSP_MAPOUTBUF: | |
2613 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, | |
2614 | cmd == SNDCTL_DSP_MAPINBUF ? | |
2615 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2616 | (struct buffmem_desc __user *) arg); | |
2617 | case SNDCTL_DSP_SETSYNCRO: | |
2618 | /* stop DMA now.. */ | |
2619 | return 0; | |
2620 | case SNDCTL_DSP_SETDUPLEX: | |
2621 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) | |
2622 | return 0; | |
2623 | return -EIO; | |
2624 | case SNDCTL_DSP_GETODELAY: | |
2625 | res = snd_pcm_oss_get_odelay(pcm_oss_file); | |
2626 | if (res < 0) { | |
2627 | /* it's for sure, some broken apps don't check for error codes */ | |
2628 | put_user(0, p); | |
2629 | return res; | |
2630 | } | |
2631 | return put_user(res, p); | |
2632 | case SNDCTL_DSP_PROFILE: | |
2633 | return 0; /* silently ignore */ | |
2634 | default: | |
2635 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); | |
2636 | } | |
2637 | return -EINVAL; | |
2638 | } | |
2639 | ||
2640 | #ifdef CONFIG_COMPAT | |
2641 | /* all compatible */ | |
2642 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl | |
2643 | #else | |
2644 | #define snd_pcm_oss_ioctl_compat NULL | |
2645 | #endif | |
2646 | ||
2647 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
2648 | { | |
6ac77bc1 TI |
2649 | struct snd_pcm_oss_file *pcm_oss_file; |
2650 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
2651 | |
2652 | pcm_oss_file = file->private_data; | |
2653 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2654 | if (substream == NULL) | |
2655 | return -ENXIO; | |
0df63e44 | 2656 | substream->f_flags = file->f_flags & O_NONBLOCK; |
1da177e4 LT |
2657 | #ifndef OSS_DEBUG |
2658 | return snd_pcm_oss_read1(substream, buf, count); | |
2659 | #else | |
2660 | { | |
2661 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); | |
006de267 TI |
2662 | printk(KERN_DEBUG "pcm_oss: read %li bytes " |
2663 | "(returned %li bytes)\n", (long)count, (long)res); | |
1da177e4 LT |
2664 | return res; |
2665 | } | |
2666 | #endif | |
2667 | } | |
2668 | ||
2669 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) | |
2670 | { | |
6ac77bc1 TI |
2671 | struct snd_pcm_oss_file *pcm_oss_file; |
2672 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
2673 | long result; |
2674 | ||
2675 | pcm_oss_file = file->private_data; | |
2676 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2677 | if (substream == NULL) | |
2678 | return -ENXIO; | |
0df63e44 | 2679 | substream->f_flags = file->f_flags & O_NONBLOCK; |
1da177e4 | 2680 | result = snd_pcm_oss_write1(substream, buf, count); |
1da177e4 | 2681 | #ifdef OSS_DEBUG |
006de267 TI |
2682 | printk(KERN_DEBUG "pcm_oss: write %li bytes (wrote %li bytes)\n", |
2683 | (long)count, (long)result); | |
1da177e4 LT |
2684 | #endif |
2685 | return result; | |
2686 | } | |
2687 | ||
6ac77bc1 | 2688 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
1da177e4 | 2689 | { |
6ac77bc1 | 2690 | struct snd_pcm_runtime *runtime = substream->runtime; |
9c323fcb | 2691 | if (atomic_read(&substream->mmap_count)) |
f240406b JK |
2692 | return runtime->oss.prev_hw_ptr_period != |
2693 | get_hw_ptr_period(runtime); | |
1da177e4 | 2694 | else |
f240406b JK |
2695 | return snd_pcm_playback_avail(runtime) >= |
2696 | runtime->oss.period_frames; | |
1da177e4 LT |
2697 | } |
2698 | ||
6ac77bc1 | 2699 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
1da177e4 | 2700 | { |
6ac77bc1 | 2701 | struct snd_pcm_runtime *runtime = substream->runtime; |
9c323fcb | 2702 | if (atomic_read(&substream->mmap_count)) |
f240406b JK |
2703 | return runtime->oss.prev_hw_ptr_period != |
2704 | get_hw_ptr_period(runtime); | |
1da177e4 | 2705 | else |
f240406b JK |
2706 | return snd_pcm_capture_avail(runtime) >= |
2707 | runtime->oss.period_frames; | |
1da177e4 LT |
2708 | } |
2709 | ||
2710 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) | |
2711 | { | |
6ac77bc1 | 2712 | struct snd_pcm_oss_file *pcm_oss_file; |
1da177e4 | 2713 | unsigned int mask; |
6ac77bc1 | 2714 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
1da177e4 LT |
2715 | |
2716 | pcm_oss_file = file->private_data; | |
2717 | ||
2718 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2719 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2720 | ||
2721 | mask = 0; | |
2722 | if (psubstream != NULL) { | |
6ac77bc1 | 2723 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
1da177e4 LT |
2724 | poll_wait(file, &runtime->sleep, wait); |
2725 | snd_pcm_stream_lock_irq(psubstream); | |
2726 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && | |
2727 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || | |
2728 | snd_pcm_oss_playback_ready(psubstream))) | |
2729 | mask |= POLLOUT | POLLWRNORM; | |
2730 | snd_pcm_stream_unlock_irq(psubstream); | |
2731 | } | |
2732 | if (csubstream != NULL) { | |
6ac77bc1 TI |
2733 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
2734 | snd_pcm_state_t ostate; | |
1da177e4 LT |
2735 | poll_wait(file, &runtime->sleep, wait); |
2736 | snd_pcm_stream_lock_irq(csubstream); | |
2737 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || | |
2738 | snd_pcm_oss_capture_ready(csubstream)) | |
2739 | mask |= POLLIN | POLLRDNORM; | |
2740 | snd_pcm_stream_unlock_irq(csubstream); | |
2741 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { | |
6ac77bc1 | 2742 | struct snd_pcm_oss_file ofile; |
1da177e4 LT |
2743 | memset(&ofile, 0, sizeof(ofile)); |
2744 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2745 | runtime->oss.trigger = 0; | |
2746 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); | |
2747 | } | |
2748 | } | |
2749 | ||
2750 | return mask; | |
2751 | } | |
2752 | ||
2753 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) | |
2754 | { | |
6ac77bc1 TI |
2755 | struct snd_pcm_oss_file *pcm_oss_file; |
2756 | struct snd_pcm_substream *substream = NULL; | |
2757 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2758 | int err; |
2759 | ||
2760 | #ifdef OSS_DEBUG | |
006de267 | 2761 | printk(KERN_DEBUG "pcm_oss: mmap begin\n"); |
1da177e4 LT |
2762 | #endif |
2763 | pcm_oss_file = file->private_data; | |
2764 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { | |
2765 | case VM_READ | VM_WRITE: | |
2766 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2767 | if (substream) | |
2768 | break; | |
2769 | /* Fall through */ | |
2770 | case VM_READ: | |
2771 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2772 | break; | |
2773 | case VM_WRITE: | |
2774 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2775 | break; | |
2776 | default: | |
2777 | return -EINVAL; | |
2778 | } | |
2779 | /* set VM_READ access as well to fix memset() routines that do | |
2780 | reads before writes (to improve performance) */ | |
2781 | area->vm_flags |= VM_READ; | |
2782 | if (substream == NULL) | |
2783 | return -ENXIO; | |
2784 | runtime = substream->runtime; | |
2785 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) | |
2786 | return -EIO; | |
2787 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) | |
2788 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
2789 | else | |
2790 | return -EIO; | |
2791 | ||
2792 | if (runtime->oss.params) { | |
2793 | if ((err = snd_pcm_oss_change_params(substream)) < 0) | |
2794 | return err; | |
2795 | } | |
21a3479a | 2796 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
2797 | if (runtime->oss.plugin_first != NULL) |
2798 | return -EIO; | |
21a3479a | 2799 | #endif |
1da177e4 LT |
2800 | |
2801 | if (area->vm_pgoff != 0) | |
2802 | return -EINVAL; | |
2803 | ||
2804 | err = snd_pcm_mmap_data(substream, file, area); | |
2805 | if (err < 0) | |
2806 | return err; | |
2807 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; | |
2808 | runtime->silence_threshold = 0; | |
2809 | runtime->silence_size = 0; | |
2810 | #ifdef OSS_DEBUG | |
006de267 TI |
2811 | printk(KERN_DEBUG "pcm_oss: mmap ok, bytes = 0x%x\n", |
2812 | runtime->oss.mmap_bytes); | |
1da177e4 LT |
2813 | #endif |
2814 | /* In mmap mode we never stop */ | |
2815 | runtime->stop_threshold = runtime->boundary; | |
2816 | ||
2817 | return 0; | |
2818 | } | |
2819 | ||
b7d90a35 | 2820 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
1da177e4 LT |
2821 | /* |
2822 | * /proc interface | |
2823 | */ | |
2824 | ||
6ac77bc1 TI |
2825 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
2826 | struct snd_info_buffer *buffer) | |
1da177e4 | 2827 | { |
6ac77bc1 TI |
2828 | struct snd_pcm_str *pstr = entry->private_data; |
2829 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; | |
1a60d4c5 | 2830 | mutex_lock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2831 | while (setup) { |
2832 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", | |
2833 | setup->task_name, | |
2834 | setup->periods, | |
2835 | setup->period_size, | |
2836 | setup->disable ? " disable" : "", | |
2837 | setup->direct ? " direct" : "", | |
2838 | setup->block ? " block" : "", | |
2839 | setup->nonblock ? " non-block" : "", | |
2840 | setup->partialfrag ? " partial-frag" : "", | |
2841 | setup->nosilence ? " no-silence" : ""); | |
2842 | setup = setup->next; | |
2843 | } | |
1a60d4c5 | 2844 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2845 | } |
2846 | ||
6ac77bc1 | 2847 | static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr) |
1da177e4 | 2848 | { |
6ac77bc1 | 2849 | struct snd_pcm_oss_setup *setup, *setupn; |
1da177e4 | 2850 | |
1da177e4 LT |
2851 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
2852 | setup; setup = setupn) { | |
2853 | setupn = setup->next; | |
2854 | kfree(setup->task_name); | |
2855 | kfree(setup); | |
2856 | } | |
2857 | pstr->oss.setup_list = NULL; | |
2858 | } | |
2859 | ||
6ac77bc1 TI |
2860 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
2861 | struct snd_info_buffer *buffer) | |
1da177e4 | 2862 | { |
6ac77bc1 | 2863 | struct snd_pcm_str *pstr = entry->private_data; |
4f7454a9 TI |
2864 | char line[128], str[32], task_name[32]; |
2865 | const char *ptr; | |
1da177e4 | 2866 | int idx1; |
6ac77bc1 | 2867 | struct snd_pcm_oss_setup *setup, *setup1, template; |
1da177e4 LT |
2868 | |
2869 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
1a60d4c5 | 2870 | mutex_lock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2871 | memset(&template, 0, sizeof(template)); |
2872 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); | |
2873 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { | |
2874 | snd_pcm_oss_proc_free_setup_list(pstr); | |
1a60d4c5 | 2875 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2876 | continue; |
2877 | } | |
2878 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { | |
2879 | if (!strcmp(setup->task_name, task_name)) { | |
2880 | template = *setup; | |
2881 | break; | |
2882 | } | |
2883 | } | |
2884 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2885 | template.periods = simple_strtoul(str, NULL, 10); | |
2886 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2887 | template.period_size = simple_strtoul(str, NULL, 10); | |
2888 | for (idx1 = 31; idx1 >= 0; idx1--) | |
2889 | if (template.period_size & (1 << idx1)) | |
2890 | break; | |
2891 | for (idx1--; idx1 >= 0; idx1--) | |
2892 | template.period_size &= ~(1 << idx1); | |
2893 | do { | |
2894 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2895 | if (!strcmp(str, "disable")) { | |
2896 | template.disable = 1; | |
2897 | } else if (!strcmp(str, "direct")) { | |
2898 | template.direct = 1; | |
2899 | } else if (!strcmp(str, "block")) { | |
2900 | template.block = 1; | |
2901 | } else if (!strcmp(str, "non-block")) { | |
2902 | template.nonblock = 1; | |
2903 | } else if (!strcmp(str, "partial-frag")) { | |
2904 | template.partialfrag = 1; | |
2905 | } else if (!strcmp(str, "no-silence")) { | |
2906 | template.nosilence = 1; | |
10f69f9e TI |
2907 | } else if (!strcmp(str, "buggy-ptr")) { |
2908 | template.buggyptr = 1; | |
1da177e4 LT |
2909 | } |
2910 | } while (*str); | |
2911 | if (setup == NULL) { | |
060d77b9 TI |
2912 | setup = kmalloc(sizeof(*setup), GFP_KERNEL); |
2913 | if (! setup) { | |
2914 | buffer->error = -ENOMEM; | |
91054598 | 2915 | mutex_unlock(&pstr->oss.setup_mutex); |
060d77b9 TI |
2916 | return; |
2917 | } | |
2918 | if (pstr->oss.setup_list == NULL) | |
2919 | pstr->oss.setup_list = setup; | |
2920 | else { | |
2921 | for (setup1 = pstr->oss.setup_list; | |
2922 | setup1->next; setup1 = setup1->next); | |
2923 | setup1->next = setup; | |
2924 | } | |
2925 | template.task_name = kstrdup(task_name, GFP_KERNEL); | |
2926 | if (! template.task_name) { | |
2927 | kfree(setup); | |
1da177e4 | 2928 | buffer->error = -ENOMEM; |
91054598 | 2929 | mutex_unlock(&pstr->oss.setup_mutex); |
060d77b9 | 2930 | return; |
1da177e4 LT |
2931 | } |
2932 | } | |
060d77b9 | 2933 | *setup = template; |
1a60d4c5 | 2934 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2935 | } |
2936 | } | |
2937 | ||
6ac77bc1 | 2938 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
1da177e4 LT |
2939 | { |
2940 | int stream; | |
2941 | for (stream = 0; stream < 2; ++stream) { | |
6ac77bc1 TI |
2942 | struct snd_info_entry *entry; |
2943 | struct snd_pcm_str *pstr = &pcm->streams[stream]; | |
1da177e4 LT |
2944 | if (pstr->substream_count == 0) |
2945 | continue; | |
2946 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { | |
2947 | entry->content = SNDRV_INFO_CONTENT_TEXT; | |
2948 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; | |
1da177e4 | 2949 | entry->c.text.read = snd_pcm_oss_proc_read; |
1da177e4 LT |
2950 | entry->c.text.write = snd_pcm_oss_proc_write; |
2951 | entry->private_data = pstr; | |
2952 | if (snd_info_register(entry) < 0) { | |
2953 | snd_info_free_entry(entry); | |
2954 | entry = NULL; | |
2955 | } | |
2956 | } | |
2957 | pstr->oss.proc_entry = entry; | |
2958 | } | |
2959 | } | |
2960 | ||
6ac77bc1 | 2961 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
1da177e4 LT |
2962 | { |
2963 | int stream; | |
2964 | for (stream = 0; stream < 2; ++stream) { | |
6ac77bc1 | 2965 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
746d4a02 TI |
2966 | snd_info_free_entry(pstr->oss.proc_entry); |
2967 | pstr->oss.proc_entry = NULL; | |
2968 | snd_pcm_oss_proc_free_setup_list(pstr); | |
1da177e4 LT |
2969 | } |
2970 | } | |
b7d90a35 | 2971 | #else /* !CONFIG_SND_VERBOSE_PROCFS */ |
04f141a8 TI |
2972 | #define snd_pcm_oss_proc_init(pcm) |
2973 | #define snd_pcm_oss_proc_done(pcm) | |
b7d90a35 | 2974 | #endif /* CONFIG_SND_VERBOSE_PROCFS */ |
1da177e4 LT |
2975 | |
2976 | /* | |
2977 | * ENTRY functions | |
2978 | */ | |
2979 | ||
9c2e08c5 | 2980 | static const struct file_operations snd_pcm_oss_f_reg = |
1da177e4 LT |
2981 | { |
2982 | .owner = THIS_MODULE, | |
2983 | .read = snd_pcm_oss_read, | |
2984 | .write = snd_pcm_oss_write, | |
2985 | .open = snd_pcm_oss_open, | |
2986 | .release = snd_pcm_oss_release, | |
02f4865f | 2987 | .llseek = no_llseek, |
1da177e4 LT |
2988 | .poll = snd_pcm_oss_poll, |
2989 | .unlocked_ioctl = snd_pcm_oss_ioctl, | |
2990 | .compat_ioctl = snd_pcm_oss_ioctl_compat, | |
2991 | .mmap = snd_pcm_oss_mmap, | |
2992 | }; | |
2993 | ||
6ac77bc1 | 2994 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
1da177e4 LT |
2995 | { |
2996 | char name[128]; | |
2997 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); | |
2998 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2af677fc | 2999 | pcm->card, index, &snd_pcm_oss_f_reg, |
f87135f5 | 3000 | pcm, name) < 0) { |
d3d579f8 TI |
3001 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
3002 | pcm->card->number, pcm->device); | |
1da177e4 LT |
3003 | } |
3004 | } | |
3005 | ||
6ac77bc1 | 3006 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
1da177e4 LT |
3007 | { |
3008 | pcm->oss.reg = 0; | |
896e6cc2 | 3009 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
1da177e4 LT |
3010 | char name[128]; |
3011 | int duplex; | |
3012 | register_oss_dsp(pcm, 0); | |
3013 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && | |
3014 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && | |
3015 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); | |
3016 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); | |
3017 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO | |
3018 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, | |
3019 | pcm->card->number, | |
3020 | name); | |
3021 | #endif | |
3022 | pcm->oss.reg++; | |
3023 | pcm->oss.reg_mask |= 1; | |
3024 | } | |
896e6cc2 | 3025 | if (adsp_map[pcm->card->number] == (int)pcm->device) { |
1da177e4 LT |
3026 | register_oss_dsp(pcm, 1); |
3027 | pcm->oss.reg++; | |
3028 | pcm->oss.reg_mask |= 2; | |
3029 | } | |
3030 | ||
3031 | if (pcm->oss.reg) | |
3032 | snd_pcm_oss_proc_init(pcm); | |
3033 | ||
3034 | return 0; | |
3035 | } | |
3036 | ||
6ac77bc1 | 3037 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
1da177e4 LT |
3038 | { |
3039 | if (pcm->oss.reg) { | |
3040 | if (pcm->oss.reg_mask & 1) { | |
3041 | pcm->oss.reg_mask &= ~1; | |
3042 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
3043 | pcm->card, 0); | |
3044 | } | |
3045 | if (pcm->oss.reg_mask & 2) { | |
3046 | pcm->oss.reg_mask &= ~2; | |
3047 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
3048 | pcm->card, 1); | |
3049 | } | |
896e6cc2 | 3050 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
1da177e4 LT |
3051 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
3052 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); | |
3053 | #endif | |
3054 | } | |
3055 | pcm->oss.reg = 0; | |
1da177e4 LT |
3056 | } |
3057 | return 0; | |
3058 | } | |
3059 | ||
c461482c TI |
3060 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
3061 | { | |
3062 | snd_pcm_oss_disconnect_minor(pcm); | |
3063 | snd_pcm_oss_proc_done(pcm); | |
3064 | return 0; | |
3065 | } | |
3066 | ||
6ac77bc1 | 3067 | static struct snd_pcm_notify snd_pcm_oss_notify = |
1da177e4 LT |
3068 | { |
3069 | .n_register = snd_pcm_oss_register_minor, | |
3070 | .n_disconnect = snd_pcm_oss_disconnect_minor, | |
3071 | .n_unregister = snd_pcm_oss_unregister_minor, | |
3072 | }; | |
3073 | ||
3074 | static int __init alsa_pcm_oss_init(void) | |
3075 | { | |
3076 | int i; | |
3077 | int err; | |
3078 | ||
3079 | /* check device map table */ | |
3080 | for (i = 0; i < SNDRV_CARDS; i++) { | |
896e6cc2 | 3081 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { |
d3d579f8 TI |
3082 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
3083 | i, dsp_map[i]); | |
1da177e4 LT |
3084 | dsp_map[i] = 0; |
3085 | } | |
896e6cc2 | 3086 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { |
d3d579f8 TI |
3087 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
3088 | i, adsp_map[i]); | |
1da177e4 LT |
3089 | adsp_map[i] = 1; |
3090 | } | |
3091 | } | |
3092 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) | |
3093 | return err; | |
3094 | return 0; | |
3095 | } | |
3096 | ||
3097 | static void __exit alsa_pcm_oss_exit(void) | |
3098 | { | |
3099 | snd_pcm_notify(&snd_pcm_oss_notify, 1); | |
3100 | } | |
3101 | ||
3102 | module_init(alsa_pcm_oss_init) | |
3103 | module_exit(alsa_pcm_oss_exit) |