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> | |
543537bd | 34 | #include <linux/string.h> |
1da177e4 LT |
35 | #include <sound/core.h> |
36 | #include <sound/minors.h> | |
37 | #include <sound/pcm.h> | |
38 | #include <sound/pcm_params.h> | |
39 | #include "pcm_plugin.h" | |
40 | #include <sound/info.h> | |
41 | #include <linux/soundcard.h> | |
42 | #include <sound/initval.h> | |
43 | ||
44 | #define OSS_ALSAEMULVER _SIOR ('M', 249, int) | |
45 | ||
6581f4e7 | 46 | static int dsp_map[SNDRV_CARDS]; |
1da177e4 LT |
47 | static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1}; |
48 | static int nonblock_open = 1; | |
49 | ||
c1017a4c | 50 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Abramo Bagnara <abramo@alsa-project.org>"); |
1da177e4 LT |
51 | MODULE_DESCRIPTION("PCM OSS emulation for ALSA."); |
52 | MODULE_LICENSE("GPL"); | |
53 | module_param_array(dsp_map, int, NULL, 0444); | |
54 | MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device."); | |
55 | module_param_array(adsp_map, int, NULL, 0444); | |
56 | MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device."); | |
57 | module_param(nonblock_open, bool, 0644); | |
58 | MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices."); | |
59 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM); | |
60 | MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1); | |
61 | ||
6ac77bc1 TI |
62 | extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg); |
63 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file); | |
64 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file); | |
65 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file); | |
1da177e4 LT |
66 | |
67 | static inline mm_segment_t snd_enter_user(void) | |
68 | { | |
69 | mm_segment_t fs = get_fs(); | |
70 | set_fs(get_ds()); | |
71 | return fs; | |
72 | } | |
73 | ||
74 | static inline void snd_leave_user(mm_segment_t fs) | |
75 | { | |
76 | set_fs(fs); | |
77 | } | |
78 | ||
e88e8ae6 TI |
79 | /* |
80 | * helper functions to process hw_params | |
81 | */ | |
82 | static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin) | |
83 | { | |
84 | int changed = 0; | |
85 | if (i->min < min) { | |
86 | i->min = min; | |
87 | i->openmin = openmin; | |
88 | changed = 1; | |
89 | } else if (i->min == min && !i->openmin && openmin) { | |
90 | i->openmin = 1; | |
91 | changed = 1; | |
92 | } | |
93 | if (i->integer) { | |
94 | if (i->openmin) { | |
95 | i->min++; | |
96 | i->openmin = 0; | |
97 | } | |
98 | } | |
99 | if (snd_interval_checkempty(i)) { | |
100 | snd_interval_none(i); | |
101 | return -EINVAL; | |
102 | } | |
103 | return changed; | |
104 | } | |
105 | ||
106 | static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax) | |
107 | { | |
108 | int changed = 0; | |
109 | if (i->max > max) { | |
110 | i->max = max; | |
111 | i->openmax = openmax; | |
112 | changed = 1; | |
113 | } else if (i->max == max && !i->openmax && openmax) { | |
114 | i->openmax = 1; | |
115 | changed = 1; | |
116 | } | |
117 | if (i->integer) { | |
118 | if (i->openmax) { | |
119 | i->max--; | |
120 | i->openmax = 0; | |
121 | } | |
122 | } | |
123 | if (snd_interval_checkempty(i)) { | |
124 | snd_interval_none(i); | |
125 | return -EINVAL; | |
126 | } | |
127 | return changed; | |
128 | } | |
129 | ||
130 | static int snd_interval_refine_set(struct snd_interval *i, unsigned int val) | |
131 | { | |
132 | struct snd_interval t; | |
133 | t.empty = 0; | |
134 | t.min = t.max = val; | |
135 | t.openmin = t.openmax = 0; | |
136 | t.integer = 1; | |
137 | return snd_interval_refine(i, &t); | |
138 | } | |
139 | ||
140 | /** | |
141 | * snd_pcm_hw_param_value_min | |
142 | * @params: the hw_params instance | |
143 | * @var: parameter to retrieve | |
144 | * @dir: pointer to the direction (-1,0,1) or NULL | |
145 | * | |
146 | * Return the minimum value for field PAR. | |
147 | */ | |
148 | static unsigned int | |
149 | snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params, | |
150 | snd_pcm_hw_param_t var, int *dir) | |
151 | { | |
152 | if (hw_is_mask(var)) { | |
153 | if (dir) | |
154 | *dir = 0; | |
155 | return snd_mask_min(hw_param_mask_c(params, var)); | |
156 | } | |
157 | if (hw_is_interval(var)) { | |
158 | const struct snd_interval *i = hw_param_interval_c(params, var); | |
159 | if (dir) | |
160 | *dir = i->openmin; | |
161 | return snd_interval_min(i); | |
162 | } | |
163 | return -EINVAL; | |
164 | } | |
165 | ||
166 | /** | |
167 | * snd_pcm_hw_param_value_max | |
168 | * @params: the hw_params instance | |
169 | * @var: parameter to retrieve | |
170 | * @dir: pointer to the direction (-1,0,1) or NULL | |
171 | * | |
172 | * Return the maximum value for field PAR. | |
173 | */ | |
174 | static unsigned int | |
175 | snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params, | |
176 | snd_pcm_hw_param_t var, int *dir) | |
177 | { | |
178 | if (hw_is_mask(var)) { | |
179 | if (dir) | |
180 | *dir = 0; | |
181 | return snd_mask_max(hw_param_mask_c(params, var)); | |
182 | } | |
183 | if (hw_is_interval(var)) { | |
184 | const struct snd_interval *i = hw_param_interval_c(params, var); | |
185 | if (dir) | |
186 | *dir = - (int) i->openmax; | |
187 | return snd_interval_max(i); | |
188 | } | |
189 | return -EINVAL; | |
190 | } | |
191 | ||
192 | static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params, | |
193 | snd_pcm_hw_param_t var, | |
194 | const struct snd_mask *val) | |
195 | { | |
196 | int changed; | |
197 | changed = snd_mask_refine(hw_param_mask(params, var), val); | |
198 | if (changed) { | |
199 | params->cmask |= 1 << var; | |
200 | params->rmask |= 1 << var; | |
201 | } | |
202 | return changed; | |
203 | } | |
204 | ||
205 | static int snd_pcm_hw_param_mask(struct snd_pcm_substream *pcm, | |
206 | struct snd_pcm_hw_params *params, | |
207 | snd_pcm_hw_param_t var, | |
208 | const struct snd_mask *val) | |
209 | { | |
210 | int changed = _snd_pcm_hw_param_mask(params, var, val); | |
211 | if (changed < 0) | |
212 | return changed; | |
213 | if (params->rmask) { | |
214 | int err = snd_pcm_hw_refine(pcm, params); | |
215 | if (err < 0) | |
216 | return err; | |
217 | } | |
218 | return 0; | |
219 | } | |
220 | ||
221 | static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params, | |
222 | snd_pcm_hw_param_t var, unsigned int val, | |
223 | int dir) | |
224 | { | |
225 | int changed; | |
226 | int open = 0; | |
227 | if (dir) { | |
228 | if (dir > 0) { | |
229 | open = 1; | |
230 | } else if (dir < 0) { | |
231 | if (val > 0) { | |
232 | open = 1; | |
233 | val--; | |
234 | } | |
235 | } | |
236 | } | |
237 | if (hw_is_mask(var)) | |
238 | changed = snd_mask_refine_min(hw_param_mask(params, var), | |
239 | val + !!open); | |
240 | else if (hw_is_interval(var)) | |
241 | changed = snd_interval_refine_min(hw_param_interval(params, var), | |
242 | val, open); | |
243 | else | |
244 | return -EINVAL; | |
245 | if (changed) { | |
246 | params->cmask |= 1 << var; | |
247 | params->rmask |= 1 << var; | |
248 | } | |
249 | return changed; | |
250 | } | |
251 | ||
252 | /** | |
253 | * snd_pcm_hw_param_min | |
254 | * @pcm: PCM instance | |
255 | * @params: the hw_params instance | |
256 | * @var: parameter to retrieve | |
257 | * @val: minimal value | |
258 | * @dir: pointer to the direction (-1,0,1) or NULL | |
259 | * | |
260 | * Inside configuration space defined by PARAMS remove from PAR all | |
261 | * values < VAL. Reduce configuration space accordingly. | |
262 | * Return new minimum or -EINVAL if the configuration space is empty | |
263 | */ | |
264 | static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm, | |
265 | struct snd_pcm_hw_params *params, | |
266 | snd_pcm_hw_param_t var, unsigned int val, | |
267 | int *dir) | |
268 | { | |
269 | int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0); | |
270 | if (changed < 0) | |
271 | return changed; | |
272 | if (params->rmask) { | |
273 | int err = snd_pcm_hw_refine(pcm, params); | |
274 | if (err < 0) | |
275 | return err; | |
276 | } | |
277 | return snd_pcm_hw_param_value_min(params, var, dir); | |
278 | } | |
279 | ||
280 | static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params, | |
281 | snd_pcm_hw_param_t var, unsigned int val, | |
282 | int dir) | |
283 | { | |
284 | int changed; | |
285 | int open = 0; | |
286 | if (dir) { | |
287 | if (dir < 0) { | |
288 | open = 1; | |
289 | } else if (dir > 0) { | |
290 | open = 1; | |
291 | val++; | |
292 | } | |
293 | } | |
294 | if (hw_is_mask(var)) { | |
295 | if (val == 0 && open) { | |
296 | snd_mask_none(hw_param_mask(params, var)); | |
297 | changed = -EINVAL; | |
298 | } else | |
299 | changed = snd_mask_refine_max(hw_param_mask(params, var), | |
300 | val - !!open); | |
301 | } else if (hw_is_interval(var)) | |
302 | changed = snd_interval_refine_max(hw_param_interval(params, var), | |
303 | val, open); | |
304 | else | |
305 | return -EINVAL; | |
306 | if (changed) { | |
307 | params->cmask |= 1 << var; | |
308 | params->rmask |= 1 << var; | |
309 | } | |
310 | return changed; | |
311 | } | |
312 | ||
313 | /** | |
314 | * snd_pcm_hw_param_max | |
315 | * @pcm: PCM instance | |
316 | * @params: the hw_params instance | |
317 | * @var: parameter to retrieve | |
318 | * @val: maximal value | |
319 | * @dir: pointer to the direction (-1,0,1) or NULL | |
320 | * | |
321 | * Inside configuration space defined by PARAMS remove from PAR all | |
322 | * values >= VAL + 1. Reduce configuration space accordingly. | |
323 | * Return new maximum or -EINVAL if the configuration space is empty | |
324 | */ | |
325 | static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm, | |
326 | struct snd_pcm_hw_params *params, | |
327 | snd_pcm_hw_param_t var, unsigned int val, | |
328 | int *dir) | |
329 | { | |
330 | int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0); | |
331 | if (changed < 0) | |
332 | return changed; | |
333 | if (params->rmask) { | |
334 | int err = snd_pcm_hw_refine(pcm, params); | |
335 | if (err < 0) | |
336 | return err; | |
337 | } | |
338 | return snd_pcm_hw_param_value_max(params, var, dir); | |
339 | } | |
340 | ||
341 | static int boundary_sub(int a, int adir, | |
342 | int b, int bdir, | |
343 | int *c, int *cdir) | |
344 | { | |
345 | adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0); | |
346 | bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0); | |
347 | *c = a - b; | |
348 | *cdir = adir - bdir; | |
349 | if (*cdir == -2) { | |
350 | (*c)--; | |
351 | } else if (*cdir == 2) { | |
352 | (*c)++; | |
353 | } | |
354 | return 0; | |
355 | } | |
356 | ||
357 | static int boundary_lt(unsigned int a, int adir, | |
358 | unsigned int b, int bdir) | |
359 | { | |
360 | if (adir < 0) { | |
361 | a--; | |
362 | adir = 1; | |
363 | } else if (adir > 0) | |
364 | adir = 1; | |
365 | if (bdir < 0) { | |
366 | b--; | |
367 | bdir = 1; | |
368 | } else if (bdir > 0) | |
369 | bdir = 1; | |
370 | return a < b || (a == b && adir < bdir); | |
371 | } | |
372 | ||
373 | /* Return 1 if min is nearer to best than max */ | |
374 | static int boundary_nearer(int min, int mindir, | |
375 | int best, int bestdir, | |
376 | int max, int maxdir) | |
377 | { | |
378 | int dmin, dmindir; | |
379 | int dmax, dmaxdir; | |
380 | boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir); | |
381 | boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir); | |
382 | return boundary_lt(dmin, dmindir, dmax, dmaxdir); | |
383 | } | |
384 | ||
385 | /** | |
386 | * snd_pcm_hw_param_near | |
387 | * @pcm: PCM instance | |
388 | * @params: the hw_params instance | |
389 | * @var: parameter to retrieve | |
390 | * @best: value to set | |
391 | * @dir: pointer to the direction (-1,0,1) or NULL | |
392 | * | |
393 | * Inside configuration space defined by PARAMS set PAR to the available value | |
394 | * nearest to VAL. Reduce configuration space accordingly. | |
395 | * This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS, | |
396 | * SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT. | |
397 | * Return the value found. | |
398 | */ | |
399 | static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm, | |
400 | struct snd_pcm_hw_params *params, | |
401 | snd_pcm_hw_param_t var, unsigned int best, | |
402 | int *dir) | |
403 | { | |
404 | struct snd_pcm_hw_params *save = NULL; | |
405 | int v; | |
406 | unsigned int saved_min; | |
407 | int last = 0; | |
408 | int min, max; | |
409 | int mindir, maxdir; | |
410 | int valdir = dir ? *dir : 0; | |
411 | /* FIXME */ | |
412 | if (best > INT_MAX) | |
413 | best = INT_MAX; | |
414 | min = max = best; | |
415 | mindir = maxdir = valdir; | |
416 | if (maxdir > 0) | |
417 | maxdir = 0; | |
418 | else if (maxdir == 0) | |
419 | maxdir = -1; | |
420 | else { | |
421 | maxdir = 1; | |
422 | max--; | |
423 | } | |
424 | save = kmalloc(sizeof(*save), GFP_KERNEL); | |
425 | if (save == NULL) | |
426 | return -ENOMEM; | |
427 | *save = *params; | |
428 | saved_min = min; | |
429 | min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir); | |
430 | if (min >= 0) { | |
431 | struct snd_pcm_hw_params *params1; | |
432 | if (max < 0) | |
433 | goto _end; | |
434 | if ((unsigned int)min == saved_min && mindir == valdir) | |
435 | goto _end; | |
436 | params1 = kmalloc(sizeof(*params1), GFP_KERNEL); | |
437 | if (params1 == NULL) { | |
438 | kfree(save); | |
439 | return -ENOMEM; | |
440 | } | |
441 | *params1 = *save; | |
442 | max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir); | |
443 | if (max < 0) { | |
444 | kfree(params1); | |
445 | goto _end; | |
446 | } | |
447 | if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) { | |
448 | *params = *params1; | |
449 | last = 1; | |
450 | } | |
451 | kfree(params1); | |
452 | } else { | |
453 | *params = *save; | |
454 | max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir); | |
7eaa943c TI |
455 | if (max < 0) |
456 | return max; | |
e88e8ae6 TI |
457 | last = 1; |
458 | } | |
459 | _end: | |
460 | kfree(save); | |
461 | if (last) | |
462 | v = snd_pcm_hw_param_last(pcm, params, var, dir); | |
463 | else | |
464 | v = snd_pcm_hw_param_first(pcm, params, var, dir); | |
7eaa943c | 465 | snd_BUG_ON(v < 0); |
e88e8ae6 TI |
466 | return v; |
467 | } | |
468 | ||
469 | static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params, | |
470 | snd_pcm_hw_param_t var, unsigned int val, | |
471 | int dir) | |
472 | { | |
473 | int changed; | |
474 | if (hw_is_mask(var)) { | |
475 | struct snd_mask *m = hw_param_mask(params, var); | |
476 | if (val == 0 && dir < 0) { | |
477 | changed = -EINVAL; | |
478 | snd_mask_none(m); | |
479 | } else { | |
480 | if (dir > 0) | |
481 | val++; | |
482 | else if (dir < 0) | |
483 | val--; | |
484 | changed = snd_mask_refine_set(hw_param_mask(params, var), val); | |
485 | } | |
486 | } else if (hw_is_interval(var)) { | |
487 | struct snd_interval *i = hw_param_interval(params, var); | |
488 | if (val == 0 && dir < 0) { | |
489 | changed = -EINVAL; | |
490 | snd_interval_none(i); | |
491 | } else if (dir == 0) | |
492 | changed = snd_interval_refine_set(i, val); | |
493 | else { | |
494 | struct snd_interval t; | |
495 | t.openmin = 1; | |
496 | t.openmax = 1; | |
497 | t.empty = 0; | |
498 | t.integer = 0; | |
499 | if (dir < 0) { | |
500 | t.min = val - 1; | |
501 | t.max = val; | |
502 | } else { | |
503 | t.min = val; | |
504 | t.max = val+1; | |
505 | } | |
506 | changed = snd_interval_refine(i, &t); | |
507 | } | |
508 | } else | |
509 | return -EINVAL; | |
510 | if (changed) { | |
511 | params->cmask |= 1 << var; | |
512 | params->rmask |= 1 << var; | |
513 | } | |
514 | return changed; | |
515 | } | |
516 | ||
517 | /** | |
518 | * snd_pcm_hw_param_set | |
519 | * @pcm: PCM instance | |
520 | * @params: the hw_params instance | |
521 | * @var: parameter to retrieve | |
522 | * @val: value to set | |
523 | * @dir: pointer to the direction (-1,0,1) or NULL | |
524 | * | |
525 | * Inside configuration space defined by PARAMS remove from PAR all | |
526 | * values != VAL. Reduce configuration space accordingly. | |
527 | * Return VAL or -EINVAL if the configuration space is empty | |
528 | */ | |
529 | static int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm, | |
530 | struct snd_pcm_hw_params *params, | |
531 | snd_pcm_hw_param_t var, unsigned int val, | |
532 | int dir) | |
533 | { | |
534 | int changed = _snd_pcm_hw_param_set(params, var, val, dir); | |
535 | if (changed < 0) | |
536 | return changed; | |
537 | if (params->rmask) { | |
538 | int err = snd_pcm_hw_refine(pcm, params); | |
539 | if (err < 0) | |
540 | return err; | |
541 | } | |
542 | return snd_pcm_hw_param_value(params, var, NULL); | |
543 | } | |
544 | ||
545 | static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params, | |
546 | snd_pcm_hw_param_t var) | |
547 | { | |
548 | int changed; | |
549 | changed = snd_interval_setinteger(hw_param_interval(params, var)); | |
550 | if (changed) { | |
551 | params->cmask |= 1 << var; | |
552 | params->rmask |= 1 << var; | |
553 | } | |
554 | return changed; | |
555 | } | |
556 | ||
557 | /* | |
558 | * plugin | |
559 | */ | |
560 | ||
21a3479a | 561 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
6ac77bc1 | 562 | static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream) |
1da177e4 | 563 | { |
6ac77bc1 TI |
564 | struct snd_pcm_runtime *runtime = substream->runtime; |
565 | struct snd_pcm_plugin *plugin, *next; | |
1da177e4 LT |
566 | |
567 | plugin = runtime->oss.plugin_first; | |
568 | while (plugin) { | |
569 | next = plugin->next; | |
570 | snd_pcm_plugin_free(plugin); | |
571 | plugin = next; | |
572 | } | |
573 | runtime->oss.plugin_first = runtime->oss.plugin_last = NULL; | |
574 | return 0; | |
575 | } | |
576 | ||
6ac77bc1 | 577 | static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin) |
1da177e4 | 578 | { |
6ac77bc1 | 579 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
1da177e4 LT |
580 | plugin->next = runtime->oss.plugin_first; |
581 | plugin->prev = NULL; | |
582 | if (runtime->oss.plugin_first) { | |
583 | runtime->oss.plugin_first->prev = plugin; | |
584 | runtime->oss.plugin_first = plugin; | |
585 | } else { | |
586 | runtime->oss.plugin_last = | |
587 | runtime->oss.plugin_first = plugin; | |
588 | } | |
589 | return 0; | |
590 | } | |
591 | ||
6ac77bc1 | 592 | int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin) |
1da177e4 | 593 | { |
6ac77bc1 | 594 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
1da177e4 LT |
595 | plugin->next = NULL; |
596 | plugin->prev = runtime->oss.plugin_last; | |
597 | if (runtime->oss.plugin_last) { | |
598 | runtime->oss.plugin_last->next = plugin; | |
599 | runtime->oss.plugin_last = plugin; | |
600 | } else { | |
601 | runtime->oss.plugin_last = | |
602 | runtime->oss.plugin_first = plugin; | |
603 | } | |
604 | return 0; | |
605 | } | |
21a3479a | 606 | #endif /* CONFIG_SND_PCM_OSS_PLUGINS */ |
1da177e4 | 607 | |
6ac77bc1 | 608 | static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames) |
1da177e4 | 609 | { |
6ac77bc1 | 610 | struct snd_pcm_runtime *runtime = substream->runtime; |
af081613 | 611 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
bfc5bddb | 612 | long bytes = frames_to_bytes(runtime, frames); |
1da177e4 | 613 | if (buffer_size == runtime->oss.buffer_bytes) |
bfc5bddb | 614 | return bytes; |
cdc5c53f TI |
615 | #if BITS_PER_LONG >= 64 |
616 | return runtime->oss.buffer_bytes * bytes / buffer_size; | |
617 | #else | |
618 | { | |
619 | u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes; | |
620 | u32 rem; | |
621 | div64_32(&bsize, buffer_size, &rem); | |
622 | return (long)bsize; | |
623 | } | |
624 | #endif | |
1da177e4 LT |
625 | } |
626 | ||
6ac77bc1 | 627 | static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes) |
1da177e4 | 628 | { |
6ac77bc1 | 629 | struct snd_pcm_runtime *runtime = substream->runtime; |
af081613 | 630 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
1da177e4 LT |
631 | if (buffer_size == runtime->oss.buffer_bytes) |
632 | return bytes_to_frames(runtime, bytes); | |
633 | return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes); | |
634 | } | |
635 | ||
24038a25 TI |
636 | /* define extended formats in the recent OSS versions (if any) */ |
637 | /* linear formats */ | |
638 | #define AFMT_S32_LE 0x00001000 | |
639 | #define AFMT_S32_BE 0x00002000 | |
640 | #define AFMT_S24_LE 0x00008000 | |
641 | #define AFMT_S24_BE 0x00010000 | |
642 | #define AFMT_S24_PACKED 0x00040000 | |
643 | ||
644 | /* other supported formats */ | |
645 | #define AFMT_FLOAT 0x00004000 | |
646 | #define AFMT_SPDIF_RAW 0x00020000 | |
647 | ||
648 | /* unsupported formats */ | |
649 | #define AFMT_AC3 0x00000400 | |
650 | #define AFMT_VORBIS 0x00000800 | |
651 | ||
1da177e4 LT |
652 | static int snd_pcm_oss_format_from(int format) |
653 | { | |
654 | switch (format) { | |
655 | case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW; | |
656 | case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW; | |
657 | case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM; | |
658 | case AFMT_U8: return SNDRV_PCM_FORMAT_U8; | |
659 | case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE; | |
660 | case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE; | |
661 | case AFMT_S8: return SNDRV_PCM_FORMAT_S8; | |
662 | case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE; | |
663 | case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE; | |
664 | case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG; | |
24038a25 TI |
665 | case AFMT_S32_LE: return SNDRV_PCM_FORMAT_S32_LE; |
666 | case AFMT_S32_BE: return SNDRV_PCM_FORMAT_S32_BE; | |
667 | case AFMT_S24_LE: return SNDRV_PCM_FORMAT_S24_LE; | |
668 | case AFMT_S24_BE: return SNDRV_PCM_FORMAT_S24_BE; | |
669 | case AFMT_S24_PACKED: return SNDRV_PCM_FORMAT_S24_3LE; | |
670 | case AFMT_FLOAT: return SNDRV_PCM_FORMAT_FLOAT; | |
671 | case AFMT_SPDIF_RAW: return SNDRV_PCM_FORMAT_IEC958_SUBFRAME; | |
1da177e4 LT |
672 | default: return SNDRV_PCM_FORMAT_U8; |
673 | } | |
674 | } | |
675 | ||
676 | static int snd_pcm_oss_format_to(int format) | |
677 | { | |
678 | switch (format) { | |
679 | case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW; | |
680 | case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW; | |
681 | case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM; | |
682 | case SNDRV_PCM_FORMAT_U8: return AFMT_U8; | |
683 | case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE; | |
684 | case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE; | |
685 | case SNDRV_PCM_FORMAT_S8: return AFMT_S8; | |
686 | case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE; | |
687 | case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE; | |
688 | case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG; | |
24038a25 TI |
689 | case SNDRV_PCM_FORMAT_S32_LE: return AFMT_S32_LE; |
690 | case SNDRV_PCM_FORMAT_S32_BE: return AFMT_S32_BE; | |
691 | case SNDRV_PCM_FORMAT_S24_LE: return AFMT_S24_LE; | |
692 | case SNDRV_PCM_FORMAT_S24_BE: return AFMT_S24_BE; | |
693 | case SNDRV_PCM_FORMAT_S24_3LE: return AFMT_S24_PACKED; | |
694 | case SNDRV_PCM_FORMAT_FLOAT: return AFMT_FLOAT; | |
695 | case SNDRV_PCM_FORMAT_IEC958_SUBFRAME: return AFMT_SPDIF_RAW; | |
1da177e4 LT |
696 | default: return -EINVAL; |
697 | } | |
698 | } | |
699 | ||
6ac77bc1 TI |
700 | static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, |
701 | struct snd_pcm_hw_params *oss_params, | |
702 | struct snd_pcm_hw_params *slave_params) | |
1da177e4 LT |
703 | { |
704 | size_t s; | |
705 | size_t oss_buffer_size, oss_period_size, oss_periods; | |
706 | size_t min_period_size, max_period_size; | |
6ac77bc1 | 707 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
708 | size_t oss_frame_size; |
709 | ||
710 | oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * | |
711 | params_channels(oss_params) / 8; | |
712 | ||
713 | oss_buffer_size = snd_pcm_plug_client_size(substream, | |
714 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size; | |
715 | oss_buffer_size = 1 << ld2(oss_buffer_size); | |
9c323fcb | 716 | if (atomic_read(&substream->mmap_count)) { |
1da177e4 LT |
717 | if (oss_buffer_size > runtime->oss.mmap_bytes) |
718 | oss_buffer_size = runtime->oss.mmap_bytes; | |
719 | } | |
720 | ||
060d77b9 TI |
721 | if (substream->oss.setup.period_size > 16) |
722 | oss_period_size = substream->oss.setup.period_size; | |
1da177e4 LT |
723 | else if (runtime->oss.fragshift) { |
724 | oss_period_size = 1 << runtime->oss.fragshift; | |
725 | if (oss_period_size > oss_buffer_size / 2) | |
726 | oss_period_size = oss_buffer_size / 2; | |
727 | } else { | |
728 | int sd; | |
729 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; | |
730 | ||
731 | oss_period_size = oss_buffer_size; | |
732 | do { | |
733 | oss_period_size /= 2; | |
734 | } while (oss_period_size > bytes_per_sec); | |
735 | if (runtime->oss.subdivision == 0) { | |
736 | sd = 4; | |
737 | if (oss_period_size / sd > 4096) | |
738 | sd *= 2; | |
739 | if (oss_period_size / sd < 4096) | |
740 | sd = 1; | |
741 | } else | |
742 | sd = runtime->oss.subdivision; | |
743 | oss_period_size /= sd; | |
744 | if (oss_period_size < 16) | |
745 | oss_period_size = 16; | |
746 | } | |
747 | ||
748 | min_period_size = snd_pcm_plug_client_size(substream, | |
749 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); | |
750 | min_period_size *= oss_frame_size; | |
751 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); | |
752 | if (oss_period_size < min_period_size) | |
753 | oss_period_size = min_period_size; | |
754 | ||
755 | max_period_size = snd_pcm_plug_client_size(substream, | |
756 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); | |
757 | max_period_size *= oss_frame_size; | |
758 | max_period_size = 1 << ld2(max_period_size); | |
759 | if (oss_period_size > max_period_size) | |
760 | oss_period_size = max_period_size; | |
761 | ||
762 | oss_periods = oss_buffer_size / oss_period_size; | |
763 | ||
060d77b9 TI |
764 | if (substream->oss.setup.periods > 1) |
765 | oss_periods = substream->oss.setup.periods; | |
1da177e4 LT |
766 | |
767 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); | |
768 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) | |
769 | s = runtime->oss.maxfrags; | |
770 | if (oss_periods > s) | |
771 | oss_periods = s; | |
772 | ||
773 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); | |
774 | if (s < 2) | |
775 | s = 2; | |
776 | if (oss_periods < s) | |
777 | oss_periods = s; | |
778 | ||
779 | while (oss_period_size * oss_periods > oss_buffer_size) | |
780 | oss_period_size /= 2; | |
781 | ||
7eaa943c TI |
782 | if (oss_period_size < 16) |
783 | return -EINVAL; | |
1da177e4 LT |
784 | runtime->oss.period_bytes = oss_period_size; |
785 | runtime->oss.period_frames = 1; | |
786 | runtime->oss.periods = oss_periods; | |
787 | return 0; | |
788 | } | |
789 | ||
6ac77bc1 TI |
790 | static int choose_rate(struct snd_pcm_substream *substream, |
791 | struct snd_pcm_hw_params *params, unsigned int best_rate) | |
1da177e4 | 792 | { |
6ac77bc1 TI |
793 | struct snd_interval *it; |
794 | struct snd_pcm_hw_params *save; | |
1da177e4 LT |
795 | unsigned int rate, prev; |
796 | ||
797 | save = kmalloc(sizeof(*save), GFP_KERNEL); | |
798 | if (save == NULL) | |
799 | return -ENOMEM; | |
800 | *save = *params; | |
801 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); | |
802 | ||
803 | /* try multiples of the best rate */ | |
804 | rate = best_rate; | |
805 | for (;;) { | |
806 | if (it->max < rate || (it->max == rate && it->openmax)) | |
807 | break; | |
808 | if (it->min < rate || (it->min == rate && !it->openmin)) { | |
809 | int ret; | |
810 | ret = snd_pcm_hw_param_set(substream, params, | |
811 | SNDRV_PCM_HW_PARAM_RATE, | |
812 | rate, 0); | |
813 | if (ret == (int)rate) { | |
814 | kfree(save); | |
815 | return rate; | |
816 | } | |
817 | *params = *save; | |
818 | } | |
819 | prev = rate; | |
820 | rate += best_rate; | |
821 | if (rate <= prev) | |
822 | break; | |
823 | } | |
824 | ||
825 | /* not found, use the nearest rate */ | |
826 | kfree(save); | |
827 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); | |
828 | } | |
829 | ||
6ac77bc1 | 830 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
1da177e4 | 831 | { |
6ac77bc1 TI |
832 | struct snd_pcm_runtime *runtime = substream->runtime; |
833 | struct snd_pcm_hw_params *params, *sparams; | |
834 | struct snd_pcm_sw_params *sw_params; | |
1da177e4 LT |
835 | ssize_t oss_buffer_size, oss_period_size; |
836 | size_t oss_frame_size; | |
837 | int err; | |
838 | int direct; | |
839 | int format, sformat, n; | |
6ac77bc1 TI |
840 | struct snd_mask sformat_mask; |
841 | struct snd_mask mask; | |
1da177e4 | 842 | |
e3a5d59a TI |
843 | if (mutex_lock_interruptible(&runtime->oss.params_lock)) |
844 | return -EINTR; | |
1da177e4 LT |
845 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); |
846 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
847 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); | |
848 | if (!sw_params || !params || !sparams) { | |
849 | snd_printd("No memory\n"); | |
850 | err = -ENOMEM; | |
851 | goto failure; | |
852 | } | |
853 | ||
9c323fcb | 854 | if (atomic_read(&substream->mmap_count)) |
1da177e4 | 855 | direct = 1; |
060d77b9 TI |
856 | else |
857 | direct = substream->oss.setup.direct; | |
1da177e4 LT |
858 | |
859 | _snd_pcm_hw_params_any(sparams); | |
860 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); | |
861 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); | |
862 | snd_mask_none(&mask); | |
9c323fcb | 863 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
864 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); |
865 | else { | |
866 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); | |
867 | if (!direct) | |
868 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); | |
869 | } | |
870 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); | |
871 | if (err < 0) { | |
872 | snd_printd("No usable accesses\n"); | |
873 | err = -EINVAL; | |
874 | goto failure; | |
875 | } | |
876 | choose_rate(substream, sparams, runtime->oss.rate); | |
877 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); | |
878 | ||
879 | format = snd_pcm_oss_format_from(runtime->oss.format); | |
880 | ||
881 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); | |
882 | if (direct) | |
883 | sformat = format; | |
884 | else | |
885 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); | |
886 | ||
887 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { | |
888 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { | |
889 | if (snd_mask_test(&sformat_mask, sformat) && | |
890 | snd_pcm_oss_format_to(sformat) >= 0) | |
891 | break; | |
892 | } | |
893 | if (sformat > SNDRV_PCM_FORMAT_LAST) { | |
894 | snd_printd("Cannot find a format!!!\n"); | |
895 | err = -EINVAL; | |
896 | goto failure; | |
897 | } | |
898 | } | |
899 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); | |
7eaa943c TI |
900 | if (err < 0) |
901 | goto failure; | |
1da177e4 LT |
902 | |
903 | if (direct) { | |
904 | memcpy(params, sparams, sizeof(*params)); | |
905 | } else { | |
906 | _snd_pcm_hw_params_any(params); | |
907 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, | |
908 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); | |
909 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, | |
910 | snd_pcm_oss_format_from(runtime->oss.format), 0); | |
911 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, | |
912 | runtime->oss.channels, 0); | |
913 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, | |
914 | runtime->oss.rate, 0); | |
915 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", | |
916 | params_access(params), params_format(params), | |
917 | params_channels(params), params_rate(params)); | |
918 | } | |
919 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", | |
920 | params_access(sparams), params_format(sparams), | |
921 | params_channels(sparams), params_rate(sparams)); | |
922 | ||
923 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * | |
924 | params_channels(params) / 8; | |
925 | ||
21a3479a | 926 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
927 | snd_pcm_oss_plugin_clear(substream); |
928 | if (!direct) { | |
929 | /* add necessary plugins */ | |
930 | snd_pcm_oss_plugin_clear(substream); | |
931 | if ((err = snd_pcm_plug_format_plugins(substream, | |
932 | params, | |
933 | sparams)) < 0) { | |
934 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); | |
935 | snd_pcm_oss_plugin_clear(substream); | |
936 | goto failure; | |
937 | } | |
938 | if (runtime->oss.plugin_first) { | |
6ac77bc1 | 939 | struct snd_pcm_plugin *plugin; |
1da177e4 LT |
940 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
941 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); | |
942 | snd_pcm_oss_plugin_clear(substream); | |
943 | goto failure; | |
944 | } | |
945 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
946 | err = snd_pcm_plugin_append(plugin); | |
947 | } else { | |
948 | err = snd_pcm_plugin_insert(plugin); | |
949 | } | |
950 | if (err < 0) { | |
951 | snd_pcm_oss_plugin_clear(substream); | |
952 | goto failure; | |
953 | } | |
954 | } | |
955 | } | |
21a3479a | 956 | #endif |
1da177e4 LT |
957 | |
958 | err = snd_pcm_oss_period_size(substream, params, sparams); | |
959 | if (err < 0) | |
960 | goto failure; | |
961 | ||
962 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); | |
963 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); | |
7eaa943c TI |
964 | if (err < 0) |
965 | goto failure; | |
1da177e4 LT |
966 | |
967 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, | |
968 | runtime->oss.periods, NULL); | |
7eaa943c TI |
969 | if (err < 0) |
970 | goto failure; | |
1da177e4 LT |
971 | |
972 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
973 | ||
974 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { | |
975 | snd_printd("HW_PARAMS failed: %i\n", err); | |
976 | goto failure; | |
977 | } | |
978 | ||
979 | memset(sw_params, 0, sizeof(*sw_params)); | |
980 | if (runtime->oss.trigger) { | |
981 | sw_params->start_threshold = 1; | |
982 | } else { | |
983 | sw_params->start_threshold = runtime->boundary; | |
984 | } | |
9c323fcb TI |
985 | if (atomic_read(&substream->mmap_count) || |
986 | substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
1da177e4 LT |
987 | sw_params->stop_threshold = runtime->boundary; |
988 | else | |
989 | sw_params->stop_threshold = runtime->buffer_size; | |
990 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
991 | sw_params->period_step = 1; | |
004e6538 TI |
992 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
993 | 1 : runtime->period_size; | |
9c323fcb | 994 | if (atomic_read(&substream->mmap_count) || |
060d77b9 | 995 | substream->oss.setup.nosilence) { |
1da177e4 LT |
996 | sw_params->silence_threshold = 0; |
997 | sw_params->silence_size = 0; | |
998 | } else { | |
999 | snd_pcm_uframes_t frames; | |
1000 | frames = runtime->period_size + 16; | |
1001 | if (frames > runtime->buffer_size) | |
1002 | frames = runtime->buffer_size; | |
1003 | sw_params->silence_threshold = frames; | |
1004 | sw_params->silence_size = frames; | |
1005 | } | |
1006 | ||
1007 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { | |
1008 | snd_printd("SW_PARAMS failed: %i\n", err); | |
1009 | goto failure; | |
1010 | } | |
1011 | ||
1012 | runtime->oss.periods = params_periods(sparams); | |
1013 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); | |
7eaa943c TI |
1014 | if (oss_period_size < 0) { |
1015 | err = -EINVAL; | |
1016 | goto failure; | |
1017 | } | |
21a3479a | 1018 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
1019 | if (runtime->oss.plugin_first) { |
1020 | err = snd_pcm_plug_alloc(substream, oss_period_size); | |
1021 | if (err < 0) | |
1022 | goto failure; | |
1023 | } | |
21a3479a | 1024 | #endif |
1da177e4 LT |
1025 | oss_period_size *= oss_frame_size; |
1026 | ||
1027 | oss_buffer_size = oss_period_size * runtime->oss.periods; | |
7eaa943c TI |
1028 | if (oss_buffer_size < 0) { |
1029 | err = -EINVAL; | |
1030 | goto failure; | |
1031 | } | |
1da177e4 LT |
1032 | |
1033 | runtime->oss.period_bytes = oss_period_size; | |
1034 | runtime->oss.buffer_bytes = oss_buffer_size; | |
1035 | ||
1036 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", | |
1037 | runtime->oss.period_bytes, | |
1038 | runtime->oss.buffer_bytes); | |
1039 | pdprintf("slave: period_size = %i, buffer_size = %i\n", | |
1040 | params_period_size(sparams), | |
1041 | params_buffer_size(sparams)); | |
1042 | ||
1043 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); | |
1044 | runtime->oss.channels = params_channels(params); | |
1045 | runtime->oss.rate = params_rate(params); | |
1046 | ||
1047 | runtime->oss.params = 0; | |
1048 | runtime->oss.prepare = 1; | |
1049 | vfree(runtime->oss.buffer); | |
1050 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); | |
1051 | runtime->oss.buffer_used = 0; | |
1052 | if (runtime->dma_area) | |
1053 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); | |
1054 | ||
1055 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); | |
1056 | ||
1057 | err = 0; | |
1058 | failure: | |
1059 | kfree(sw_params); | |
1060 | kfree(params); | |
1061 | kfree(sparams); | |
e3a5d59a | 1062 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 LT |
1063 | return err; |
1064 | } | |
1065 | ||
6ac77bc1 | 1066 | static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream) |
1da177e4 LT |
1067 | { |
1068 | int idx, err; | |
6ac77bc1 | 1069 | struct snd_pcm_substream *asubstream = NULL, *substream; |
1da177e4 LT |
1070 | |
1071 | for (idx = 0; idx < 2; idx++) { | |
1072 | substream = pcm_oss_file->streams[idx]; | |
1073 | if (substream == NULL) | |
1074 | continue; | |
1075 | if (asubstream == NULL) | |
1076 | asubstream = substream; | |
1077 | if (substream->runtime->oss.params) { | |
1078 | err = snd_pcm_oss_change_params(substream); | |
1079 | if (err < 0) | |
1080 | return err; | |
1081 | } | |
1082 | } | |
7eaa943c TI |
1083 | if (!asubstream) |
1084 | return -EIO; | |
1da177e4 LT |
1085 | if (r_substream) |
1086 | *r_substream = asubstream; | |
1087 | return 0; | |
1088 | } | |
1089 | ||
6ac77bc1 | 1090 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
1da177e4 LT |
1091 | { |
1092 | int err; | |
6ac77bc1 | 1093 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1094 | |
1095 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); | |
1096 | if (err < 0) { | |
1097 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); | |
1098 | return err; | |
1099 | } | |
1100 | runtime->oss.prepare = 0; | |
1101 | runtime->oss.prev_hw_ptr_interrupt = 0; | |
1102 | runtime->oss.period_ptr = 0; | |
1103 | runtime->oss.buffer_used = 0; | |
1104 | ||
1105 | return 0; | |
1106 | } | |
1107 | ||
6ac77bc1 | 1108 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
1da177e4 | 1109 | { |
6ac77bc1 | 1110 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1111 | int err; |
1112 | ||
1113 | if (substream == NULL) | |
1114 | return 0; | |
1115 | runtime = substream->runtime; | |
1116 | if (runtime->oss.params) { | |
1117 | err = snd_pcm_oss_change_params(substream); | |
1118 | if (err < 0) | |
1119 | return err; | |
1120 | } | |
1121 | if (runtime->oss.prepare) { | |
1122 | err = snd_pcm_oss_prepare(substream); | |
1123 | if (err < 0) | |
1124 | return err; | |
1125 | } | |
1126 | return 0; | |
1127 | } | |
1128 | ||
6ac77bc1 | 1129 | static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay) |
1da177e4 | 1130 | { |
6ac77bc1 | 1131 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1132 | snd_pcm_uframes_t frames; |
1133 | int err = 0; | |
1134 | ||
1135 | while (1) { | |
1136 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); | |
1137 | if (err < 0) | |
1138 | break; | |
1139 | runtime = substream->runtime; | |
1140 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) | |
1141 | break; | |
1142 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ | |
1143 | /* until avail(delay) <= buffer_size */ | |
1144 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; | |
1145 | frames /= runtime->period_size; | |
1146 | frames *= runtime->period_size; | |
1147 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); | |
1148 | if (err < 0) | |
1149 | break; | |
1150 | } | |
1151 | return err; | |
1152 | } | |
1153 | ||
6ac77bc1 | 1154 | 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 | 1155 | { |
6ac77bc1 | 1156 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1157 | int ret; |
1158 | while (1) { | |
1159 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1160 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1161 | #ifdef OSS_DEBUG | |
1162 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
1163 | printk("pcm_oss: write: recovering from XRUN\n"); | |
1164 | else | |
1165 | printk("pcm_oss: write: recovering from SUSPEND\n"); | |
1166 | #endif | |
1167 | ret = snd_pcm_oss_prepare(substream); | |
1168 | if (ret < 0) | |
1169 | break; | |
1170 | } | |
1171 | if (in_kernel) { | |
1172 | mm_segment_t fs; | |
1173 | fs = snd_enter_user(); | |
1174 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); | |
1175 | snd_leave_user(fs); | |
1176 | } else { | |
1177 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); | |
1178 | } | |
1179 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
1180 | break; | |
1181 | /* test, if we can't store new data, because the stream */ | |
1182 | /* has not been started */ | |
1183 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) | |
1184 | return -EAGAIN; | |
1185 | } | |
1186 | return ret; | |
1187 | } | |
1188 | ||
6ac77bc1 | 1189 | snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 1190 | { |
6ac77bc1 | 1191 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1192 | snd_pcm_sframes_t delay; |
1193 | int ret; | |
1194 | while (1) { | |
1195 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1196 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1197 | #ifdef OSS_DEBUG | |
1198 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
1199 | printk("pcm_oss: read: recovering from XRUN\n"); | |
1200 | else | |
1201 | printk("pcm_oss: read: recovering from SUSPEND\n"); | |
1202 | #endif | |
1203 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
1204 | if (ret < 0) | |
1205 | break; | |
1206 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { | |
1207 | ret = snd_pcm_oss_prepare(substream); | |
1208 | if (ret < 0) | |
1209 | break; | |
1210 | } | |
1211 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); | |
1212 | if (ret < 0) | |
1213 | break; | |
1214 | if (in_kernel) { | |
1215 | mm_segment_t fs; | |
1216 | fs = snd_enter_user(); | |
1217 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); | |
1218 | snd_leave_user(fs); | |
1219 | } else { | |
1220 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); | |
1221 | } | |
1222 | if (ret == -EPIPE) { | |
1223 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { | |
1224 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
1225 | if (ret < 0) | |
1226 | break; | |
1227 | } | |
1228 | continue; | |
1229 | } | |
1230 | if (ret != -ESTRPIPE) | |
1231 | break; | |
1232 | } | |
1233 | return ret; | |
1234 | } | |
1235 | ||
6ac77bc1 | 1236 | snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 1237 | { |
6ac77bc1 | 1238 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1239 | int ret; |
1240 | while (1) { | |
1241 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1242 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1243 | #ifdef OSS_DEBUG | |
1244 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
1245 | printk("pcm_oss: writev: recovering from XRUN\n"); | |
1246 | else | |
1247 | printk("pcm_oss: writev: recovering from SUSPEND\n"); | |
1248 | #endif | |
1249 | ret = snd_pcm_oss_prepare(substream); | |
1250 | if (ret < 0) | |
1251 | break; | |
1252 | } | |
1253 | if (in_kernel) { | |
1254 | mm_segment_t fs; | |
1255 | fs = snd_enter_user(); | |
1256 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); | |
1257 | snd_leave_user(fs); | |
1258 | } else { | |
1259 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); | |
1260 | } | |
1261 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
1262 | break; | |
1263 | ||
1264 | /* test, if we can't store new data, because the stream */ | |
1265 | /* has not been started */ | |
1266 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) | |
1267 | return -EAGAIN; | |
1268 | } | |
1269 | return ret; | |
1270 | } | |
1271 | ||
6ac77bc1 | 1272 | snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 1273 | { |
6ac77bc1 | 1274 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1275 | int ret; |
1276 | while (1) { | |
1277 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
1278 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1279 | #ifdef OSS_DEBUG | |
1280 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
1281 | printk("pcm_oss: readv: recovering from XRUN\n"); | |
1282 | else | |
1283 | printk("pcm_oss: readv: recovering from SUSPEND\n"); | |
1284 | #endif | |
1285 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
1286 | if (ret < 0) | |
1287 | break; | |
1288 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { | |
1289 | ret = snd_pcm_oss_prepare(substream); | |
1290 | if (ret < 0) | |
1291 | break; | |
1292 | } | |
1293 | if (in_kernel) { | |
1294 | mm_segment_t fs; | |
1295 | fs = snd_enter_user(); | |
1296 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); | |
1297 | snd_leave_user(fs); | |
1298 | } else { | |
1299 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); | |
1300 | } | |
1301 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
1302 | break; | |
1303 | } | |
1304 | return ret; | |
1305 | } | |
1306 | ||
6ac77bc1 | 1307 | static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel) |
1da177e4 | 1308 | { |
6ac77bc1 | 1309 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1310 | snd_pcm_sframes_t frames, frames1; |
21a3479a | 1311 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 | 1312 | if (runtime->oss.plugin_first) { |
6ac77bc1 | 1313 | struct snd_pcm_plugin_channel *channels; |
1da177e4 LT |
1314 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
1315 | if (!in_kernel) { | |
1316 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) | |
1317 | return -EFAULT; | |
1318 | buf = runtime->oss.buffer; | |
1319 | } | |
1320 | frames = bytes / oss_frame_bytes; | |
1321 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); | |
1322 | if (frames1 < 0) | |
1323 | return frames1; | |
1324 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); | |
1325 | if (frames1 <= 0) | |
1326 | return frames1; | |
1327 | bytes = frames1 * oss_frame_bytes; | |
21a3479a JK |
1328 | } else |
1329 | #endif | |
1330 | { | |
1da177e4 LT |
1331 | frames = bytes_to_frames(runtime, bytes); |
1332 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); | |
1333 | if (frames1 <= 0) | |
1334 | return frames1; | |
1335 | bytes = frames_to_bytes(runtime, frames1); | |
1336 | } | |
1337 | return bytes; | |
1338 | } | |
1339 | ||
6ac77bc1 | 1340 | static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes) |
1da177e4 LT |
1341 | { |
1342 | size_t xfer = 0; | |
1343 | ssize_t tmp; | |
6ac77bc1 | 1344 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1345 | |
9c323fcb | 1346 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
1347 | return -ENXIO; |
1348 | ||
1349 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) | |
1350 | return tmp; | |
e3a5d59a | 1351 | mutex_lock(&runtime->oss.params_lock); |
1da177e4 LT |
1352 | while (bytes > 0) { |
1353 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { | |
1354 | tmp = bytes; | |
1355 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) | |
1356 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; | |
1357 | if (tmp > 0) { | |
e3a5d59a TI |
1358 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) { |
1359 | tmp = -EFAULT; | |
1360 | goto err; | |
1361 | } | |
1da177e4 LT |
1362 | } |
1363 | runtime->oss.buffer_used += tmp; | |
1364 | buf += tmp; | |
1365 | bytes -= tmp; | |
1366 | xfer += tmp; | |
060d77b9 | 1367 | if (substream->oss.setup.partialfrag || |
1da177e4 LT |
1368 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
1369 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, | |
1370 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); | |
1371 | if (tmp <= 0) | |
e3a5d59a | 1372 | goto err; |
1da177e4 LT |
1373 | runtime->oss.bytes += tmp; |
1374 | runtime->oss.period_ptr += tmp; | |
1375 | runtime->oss.period_ptr %= runtime->oss.period_bytes; | |
1376 | if (runtime->oss.period_ptr == 0 || | |
1377 | runtime->oss.period_ptr == runtime->oss.buffer_used) | |
1378 | runtime->oss.buffer_used = 0; | |
e3a5d59a TI |
1379 | else if ((substream->f_flags & O_NONBLOCK) != 0) { |
1380 | tmp = -EAGAIN; | |
1381 | goto err; | |
1382 | } | |
1da177e4 LT |
1383 | } |
1384 | } else { | |
4d23359b CL |
1385 | tmp = snd_pcm_oss_write2(substream, |
1386 | (const char __force *)buf, | |
1387 | runtime->oss.period_bytes, 0); | |
1da177e4 | 1388 | if (tmp <= 0) |
e3a5d59a | 1389 | goto err; |
1da177e4 LT |
1390 | runtime->oss.bytes += tmp; |
1391 | buf += tmp; | |
1392 | bytes -= tmp; | |
1393 | xfer += tmp; | |
0df63e44 | 1394 | if ((substream->f_flags & O_NONBLOCK) != 0 && |
1da177e4 LT |
1395 | tmp != runtime->oss.period_bytes) |
1396 | break; | |
1397 | } | |
1398 | } | |
e3a5d59a | 1399 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 | 1400 | return xfer; |
e3a5d59a TI |
1401 | |
1402 | err: | |
1403 | mutex_unlock(&runtime->oss.params_lock); | |
1404 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
1da177e4 LT |
1405 | } |
1406 | ||
6ac77bc1 | 1407 | static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel) |
1da177e4 | 1408 | { |
6ac77bc1 | 1409 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1410 | snd_pcm_sframes_t frames, frames1; |
21a3479a | 1411 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
1412 | char __user *final_dst = (char __user *)buf; |
1413 | if (runtime->oss.plugin_first) { | |
6ac77bc1 | 1414 | struct snd_pcm_plugin_channel *channels; |
1da177e4 LT |
1415 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
1416 | if (!in_kernel) | |
1417 | buf = runtime->oss.buffer; | |
1418 | frames = bytes / oss_frame_bytes; | |
1419 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); | |
1420 | if (frames1 < 0) | |
1421 | return frames1; | |
1422 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); | |
1423 | if (frames1 <= 0) | |
1424 | return frames1; | |
1425 | bytes = frames1 * oss_frame_bytes; | |
1426 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) | |
1427 | return -EFAULT; | |
21a3479a JK |
1428 | } else |
1429 | #endif | |
1430 | { | |
1da177e4 LT |
1431 | frames = bytes_to_frames(runtime, bytes); |
1432 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); | |
1433 | if (frames1 <= 0) | |
1434 | return frames1; | |
1435 | bytes = frames_to_bytes(runtime, frames1); | |
1436 | } | |
1437 | return bytes; | |
1438 | } | |
1439 | ||
6ac77bc1 | 1440 | static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes) |
1da177e4 LT |
1441 | { |
1442 | size_t xfer = 0; | |
1443 | ssize_t tmp; | |
6ac77bc1 | 1444 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1445 | |
9c323fcb | 1446 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
1447 | return -ENXIO; |
1448 | ||
1449 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) | |
1450 | return tmp; | |
e3a5d59a | 1451 | mutex_lock(&runtime->oss.params_lock); |
1da177e4 LT |
1452 | while (bytes > 0) { |
1453 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { | |
1454 | if (runtime->oss.buffer_used == 0) { | |
1455 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); | |
1456 | if (tmp <= 0) | |
e3a5d59a | 1457 | goto err; |
1da177e4 LT |
1458 | runtime->oss.bytes += tmp; |
1459 | runtime->oss.period_ptr = tmp; | |
1460 | runtime->oss.buffer_used = tmp; | |
1461 | } | |
1462 | tmp = bytes; | |
1463 | if ((size_t) tmp > runtime->oss.buffer_used) | |
1464 | tmp = runtime->oss.buffer_used; | |
e3a5d59a TI |
1465 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) { |
1466 | tmp = -EFAULT; | |
1467 | goto err; | |
1468 | } | |
1da177e4 LT |
1469 | buf += tmp; |
1470 | bytes -= tmp; | |
1471 | xfer += tmp; | |
1472 | runtime->oss.buffer_used -= tmp; | |
1473 | } else { | |
4d23359b CL |
1474 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
1475 | runtime->oss.period_bytes, 0); | |
1da177e4 | 1476 | if (tmp <= 0) |
e3a5d59a | 1477 | goto err; |
1da177e4 LT |
1478 | runtime->oss.bytes += tmp; |
1479 | buf += tmp; | |
1480 | bytes -= tmp; | |
1481 | xfer += tmp; | |
1482 | } | |
1483 | } | |
e3a5d59a | 1484 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 | 1485 | return xfer; |
e3a5d59a TI |
1486 | |
1487 | err: | |
1488 | mutex_unlock(&runtime->oss.params_lock); | |
1489 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
1da177e4 LT |
1490 | } |
1491 | ||
6ac77bc1 | 1492 | static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1493 | { |
6ac77bc1 | 1494 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1495 | |
1496 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1497 | if (substream != NULL) { | |
bf1bbb5a | 1498 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
1da177e4 LT |
1499 | substream->runtime->oss.prepare = 1; |
1500 | } | |
1501 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1502 | if (substream != NULL) { | |
bf1bbb5a | 1503 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
1da177e4 LT |
1504 | substream->runtime->oss.prepare = 1; |
1505 | } | |
1506 | return 0; | |
1507 | } | |
1508 | ||
6ac77bc1 | 1509 | static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1510 | { |
6ac77bc1 | 1511 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1512 | int err; |
1513 | ||
1514 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1515 | if (substream != NULL) { | |
1516 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1517 | return err; | |
bf1bbb5a | 1518 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
1da177e4 LT |
1519 | } |
1520 | /* note: all errors from the start action are ignored */ | |
1521 | /* OSS apps do not know, how to handle them */ | |
1522 | return 0; | |
1523 | } | |
1524 | ||
6ac77bc1 | 1525 | static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size) |
1da177e4 | 1526 | { |
6ac77bc1 | 1527 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1528 | ssize_t result = 0; |
1529 | long res; | |
1530 | wait_queue_t wait; | |
1531 | ||
1532 | runtime = substream->runtime; | |
1533 | init_waitqueue_entry(&wait, current); | |
1534 | add_wait_queue(&runtime->sleep, &wait); | |
1535 | #ifdef OSS_DEBUG | |
1536 | printk("sync1: size = %li\n", size); | |
1537 | #endif | |
1538 | while (1) { | |
1539 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); | |
1540 | if (result > 0) { | |
1541 | runtime->oss.buffer_used = 0; | |
1542 | result = 0; | |
1543 | break; | |
1544 | } | |
1545 | if (result != 0 && result != -EAGAIN) | |
1546 | break; | |
1547 | result = 0; | |
1548 | set_current_state(TASK_INTERRUPTIBLE); | |
1549 | snd_pcm_stream_lock_irq(substream); | |
1550 | res = runtime->status->state; | |
1551 | snd_pcm_stream_unlock_irq(substream); | |
1552 | if (res != SNDRV_PCM_STATE_RUNNING) { | |
1553 | set_current_state(TASK_RUNNING); | |
1554 | break; | |
1555 | } | |
1556 | res = schedule_timeout(10 * HZ); | |
1557 | if (signal_pending(current)) { | |
1558 | result = -ERESTARTSYS; | |
1559 | break; | |
1560 | } | |
1561 | if (res == 0) { | |
1562 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); | |
1563 | result = -EIO; | |
1564 | break; | |
1565 | } | |
1566 | } | |
1567 | remove_wait_queue(&runtime->sleep, &wait); | |
1568 | return result; | |
1569 | } | |
1570 | ||
6ac77bc1 | 1571 | static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1572 | { |
1573 | int err = 0; | |
1574 | unsigned int saved_f_flags; | |
6ac77bc1 TI |
1575 | struct snd_pcm_substream *substream; |
1576 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1577 | snd_pcm_format_t format; |
1578 | unsigned long width; | |
1579 | size_t size; | |
1580 | ||
1581 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1582 | if (substream != NULL) { | |
1583 | runtime = substream->runtime; | |
9c323fcb | 1584 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
1585 | goto __direct; |
1586 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1587 | return err; | |
1588 | format = snd_pcm_oss_format_from(runtime->oss.format); | |
1589 | width = snd_pcm_format_physical_width(format); | |
e3a5d59a | 1590 | mutex_lock(&runtime->oss.params_lock); |
1da177e4 LT |
1591 | if (runtime->oss.buffer_used > 0) { |
1592 | #ifdef OSS_DEBUG | |
1593 | printk("sync: buffer_used\n"); | |
1594 | #endif | |
1595 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; | |
1596 | snd_pcm_format_set_silence(format, | |
1597 | runtime->oss.buffer + runtime->oss.buffer_used, | |
1598 | size); | |
1599 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); | |
e3a5d59a TI |
1600 | if (err < 0) { |
1601 | mutex_unlock(&runtime->oss.params_lock); | |
1da177e4 | 1602 | return err; |
e3a5d59a | 1603 | } |
1da177e4 LT |
1604 | } else if (runtime->oss.period_ptr > 0) { |
1605 | #ifdef OSS_DEBUG | |
1606 | printk("sync: period_ptr\n"); | |
1607 | #endif | |
1608 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; | |
1609 | snd_pcm_format_set_silence(format, | |
1610 | runtime->oss.buffer, | |
1611 | size * 8 / width); | |
1612 | err = snd_pcm_oss_sync1(substream, size); | |
e3a5d59a TI |
1613 | if (err < 0) { |
1614 | mutex_unlock(&runtime->oss.params_lock); | |
1da177e4 | 1615 | return err; |
e3a5d59a | 1616 | } |
1da177e4 LT |
1617 | } |
1618 | /* | |
1619 | * The ALSA's period might be a bit large than OSS one. | |
1620 | * Fill the remain portion of ALSA period with zeros. | |
1621 | */ | |
1622 | size = runtime->control->appl_ptr % runtime->period_size; | |
1623 | if (size > 0) { | |
1624 | size = runtime->period_size - size; | |
1625 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { | |
1626 | size = (runtime->frame_bits * size) / 8; | |
1627 | while (size > 0) { | |
1628 | mm_segment_t fs; | |
1629 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; | |
1630 | size -= size1; | |
1631 | size1 *= 8; | |
1632 | size1 /= runtime->sample_bits; | |
1633 | snd_pcm_format_set_silence(runtime->format, | |
1634 | runtime->oss.buffer, | |
1635 | size1); | |
4939c660 | 1636 | size1 /= runtime->channels; /* frames */ |
1da177e4 LT |
1637 | fs = snd_enter_user(); |
1638 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); | |
1639 | snd_leave_user(fs); | |
1640 | } | |
1641 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { | |
1642 | void __user *buffers[runtime->channels]; | |
1643 | memset(buffers, 0, runtime->channels * sizeof(void *)); | |
1644 | snd_pcm_lib_writev(substream, buffers, size); | |
1645 | } | |
1646 | } | |
e3a5d59a | 1647 | mutex_unlock(&runtime->oss.params_lock); |
1da177e4 LT |
1648 | /* |
1649 | * finish sync: drain the buffer | |
1650 | */ | |
1651 | __direct: | |
0df63e44 TI |
1652 | saved_f_flags = substream->f_flags; |
1653 | substream->f_flags &= ~O_NONBLOCK; | |
bf1bbb5a | 1654 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
0df63e44 | 1655 | substream->f_flags = saved_f_flags; |
1da177e4 LT |
1656 | if (err < 0) |
1657 | return err; | |
1658 | runtime->oss.prepare = 1; | |
1659 | } | |
1660 | ||
1661 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1662 | if (substream != NULL) { | |
1663 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1664 | return err; | |
1665 | runtime = substream->runtime; | |
bf1bbb5a | 1666 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
1da177e4 LT |
1667 | if (err < 0) |
1668 | return err; | |
1669 | runtime->oss.buffer_used = 0; | |
1670 | runtime->oss.prepare = 1; | |
1671 | } | |
1672 | return 0; | |
1673 | } | |
1674 | ||
6ac77bc1 | 1675 | static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate) |
1da177e4 LT |
1676 | { |
1677 | int idx; | |
1678 | ||
1679 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1680 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1681 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1682 | if (substream == NULL) |
1683 | continue; | |
1684 | runtime = substream->runtime; | |
1685 | if (rate < 1000) | |
1686 | rate = 1000; | |
1687 | else if (rate > 192000) | |
1688 | rate = 192000; | |
1689 | if (runtime->oss.rate != rate) { | |
1690 | runtime->oss.params = 1; | |
1691 | runtime->oss.rate = rate; | |
1692 | } | |
1693 | } | |
1694 | return snd_pcm_oss_get_rate(pcm_oss_file); | |
1695 | } | |
1696 | ||
6ac77bc1 | 1697 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1698 | { |
6ac77bc1 | 1699 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1700 | int err; |
1701 | ||
1702 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1703 | return err; | |
1704 | return substream->runtime->oss.rate; | |
1705 | } | |
1706 | ||
6ac77bc1 | 1707 | static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels) |
1da177e4 LT |
1708 | { |
1709 | int idx; | |
1710 | if (channels < 1) | |
1711 | channels = 1; | |
1712 | if (channels > 128) | |
1713 | return -EINVAL; | |
1714 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1715 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1716 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1717 | if (substream == NULL) |
1718 | continue; | |
1719 | runtime = substream->runtime; | |
1720 | if (runtime->oss.channels != channels) { | |
1721 | runtime->oss.params = 1; | |
1722 | runtime->oss.channels = channels; | |
1723 | } | |
1724 | } | |
1725 | return snd_pcm_oss_get_channels(pcm_oss_file); | |
1726 | } | |
1727 | ||
6ac77bc1 | 1728 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1729 | { |
6ac77bc1 | 1730 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1731 | int err; |
1732 | ||
1733 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1734 | return err; | |
1735 | return substream->runtime->oss.channels; | |
1736 | } | |
1737 | ||
6ac77bc1 | 1738 | static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1739 | { |
6ac77bc1 | 1740 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1741 | int err; |
1742 | ||
1743 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1744 | return err; | |
1745 | return substream->runtime->oss.period_bytes; | |
1746 | } | |
1747 | ||
6ac77bc1 | 1748 | static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1749 | { |
6ac77bc1 | 1750 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1751 | int err; |
1752 | int direct; | |
6ac77bc1 | 1753 | struct snd_pcm_hw_params *params; |
1da177e4 | 1754 | unsigned int formats = 0; |
6ac77bc1 | 1755 | struct snd_mask format_mask; |
1da177e4 LT |
1756 | int fmt; |
1757 | ||
1758 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1759 | return err; | |
9c323fcb | 1760 | if (atomic_read(&substream->mmap_count)) |
1da177e4 | 1761 | direct = 1; |
060d77b9 TI |
1762 | else |
1763 | direct = substream->oss.setup.direct; | |
1da177e4 LT |
1764 | if (!direct) |
1765 | return AFMT_MU_LAW | AFMT_U8 | | |
1766 | AFMT_S16_LE | AFMT_S16_BE | | |
1767 | AFMT_S8 | AFMT_U16_LE | | |
24038a25 TI |
1768 | AFMT_U16_BE | |
1769 | AFMT_S32_LE | AFMT_S32_BE | | |
7924f0ca | 1770 | AFMT_S24_LE | AFMT_S24_BE | |
24038a25 | 1771 | AFMT_S24_PACKED; |
1da177e4 LT |
1772 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
1773 | if (!params) | |
1774 | return -ENOMEM; | |
1775 | _snd_pcm_hw_params_any(params); | |
1776 | err = snd_pcm_hw_refine(substream, params); | |
1777 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1778 | kfree(params); | |
7eaa943c TI |
1779 | if (err < 0) |
1780 | return err; | |
1da177e4 LT |
1781 | for (fmt = 0; fmt < 32; ++fmt) { |
1782 | if (snd_mask_test(&format_mask, fmt)) { | |
1783 | int f = snd_pcm_oss_format_to(fmt); | |
1784 | if (f >= 0) | |
1785 | formats |= f; | |
1786 | } | |
1787 | } | |
1788 | return formats; | |
1789 | } | |
1790 | ||
6ac77bc1 | 1791 | static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format) |
1da177e4 LT |
1792 | { |
1793 | int formats, idx; | |
1794 | ||
1795 | if (format != AFMT_QUERY) { | |
1796 | formats = snd_pcm_oss_get_formats(pcm_oss_file); | |
5c59e09d SF |
1797 | if (formats < 0) |
1798 | return formats; | |
1da177e4 LT |
1799 | if (!(formats & format)) |
1800 | format = AFMT_U8; | |
1801 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1802 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1803 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1804 | if (substream == NULL) |
1805 | continue; | |
1806 | runtime = substream->runtime; | |
1807 | if (runtime->oss.format != format) { | |
1808 | runtime->oss.params = 1; | |
1809 | runtime->oss.format = format; | |
1810 | } | |
1811 | } | |
1812 | } | |
1813 | return snd_pcm_oss_get_format(pcm_oss_file); | |
1814 | } | |
1815 | ||
6ac77bc1 | 1816 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1817 | { |
6ac77bc1 | 1818 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1819 | int err; |
1820 | ||
1821 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1822 | return err; | |
1823 | return substream->runtime->oss.format; | |
1824 | } | |
1825 | ||
6ac77bc1 | 1826 | static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide) |
1da177e4 | 1827 | { |
6ac77bc1 | 1828 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1829 | |
1830 | if (substream == NULL) | |
1831 | return 0; | |
1832 | runtime = substream->runtime; | |
1833 | if (subdivide == 0) { | |
1834 | subdivide = runtime->oss.subdivision; | |
1835 | if (subdivide == 0) | |
1836 | subdivide = 1; | |
1837 | return subdivide; | |
1838 | } | |
1839 | if (runtime->oss.subdivision || runtime->oss.fragshift) | |
1840 | return -EINVAL; | |
1841 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && | |
1842 | subdivide != 8 && subdivide != 16) | |
1843 | return -EINVAL; | |
1844 | runtime->oss.subdivision = subdivide; | |
1845 | runtime->oss.params = 1; | |
1846 | return subdivide; | |
1847 | } | |
1848 | ||
6ac77bc1 | 1849 | static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide) |
1da177e4 LT |
1850 | { |
1851 | int err = -EINVAL, idx; | |
1852 | ||
1853 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 | 1854 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1855 | if (substream == NULL) |
1856 | continue; | |
1857 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) | |
1858 | return err; | |
1859 | } | |
1860 | return err; | |
1861 | } | |
1862 | ||
6ac77bc1 | 1863 | static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val) |
1da177e4 | 1864 | { |
6ac77bc1 | 1865 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1866 | |
1867 | if (substream == NULL) | |
1868 | return 0; | |
1869 | runtime = substream->runtime; | |
1870 | if (runtime->oss.subdivision || runtime->oss.fragshift) | |
1871 | return -EINVAL; | |
1872 | runtime->oss.fragshift = val & 0xffff; | |
1873 | runtime->oss.maxfrags = (val >> 16) & 0xffff; | |
1874 | if (runtime->oss.fragshift < 4) /* < 16 */ | |
1875 | runtime->oss.fragshift = 4; | |
1876 | if (runtime->oss.maxfrags < 2) | |
1877 | runtime->oss.maxfrags = 2; | |
1878 | runtime->oss.params = 1; | |
1879 | return 0; | |
1880 | } | |
1881 | ||
6ac77bc1 | 1882 | static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val) |
1da177e4 LT |
1883 | { |
1884 | int err = -EINVAL, idx; | |
1885 | ||
1886 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 | 1887 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1888 | if (substream == NULL) |
1889 | continue; | |
1890 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) | |
1891 | return err; | |
1892 | } | |
1893 | return err; | |
1894 | } | |
1895 | ||
1896 | static int snd_pcm_oss_nonblock(struct file * file) | |
1897 | { | |
1898 | file->f_flags |= O_NONBLOCK; | |
1899 | return 0; | |
1900 | } | |
1901 | ||
6ac77bc1 | 1902 | static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res) |
1da177e4 LT |
1903 | { |
1904 | ||
1905 | if (substream == NULL) { | |
1906 | res &= ~DSP_CAP_DUPLEX; | |
1907 | return res; | |
1908 | } | |
1909 | #ifdef DSP_CAP_MULTI | |
1910 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1911 | if (substream->pstr->substream_count > 1) | |
1912 | res |= DSP_CAP_MULTI; | |
1913 | #endif | |
1914 | /* DSP_CAP_REALTIME is set all times: */ | |
1915 | /* all ALSA drivers can return actual pointer in ring buffer */ | |
1916 | #if defined(DSP_CAP_REALTIME) && 0 | |
1917 | { | |
6ac77bc1 | 1918 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1919 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
1920 | res &= ~DSP_CAP_REALTIME; | |
1921 | } | |
1922 | #endif | |
1923 | return res; | |
1924 | } | |
1925 | ||
6ac77bc1 | 1926 | static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1927 | { |
1928 | int result, idx; | |
1929 | ||
1930 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; | |
1931 | for (idx = 0; idx < 2; idx++) { | |
6ac77bc1 | 1932 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1933 | result = snd_pcm_oss_get_caps1(substream, result); |
1934 | } | |
1935 | result |= 0x0001; /* revision - same as SB AWE 64 */ | |
1936 | return result; | |
1937 | } | |
1938 | ||
6ac77bc1 | 1939 | static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr) |
1da177e4 | 1940 | { |
6ac77bc1 | 1941 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1942 | snd_pcm_uframes_t appl_ptr; |
1943 | appl_ptr = hw_ptr + runtime->buffer_size; | |
1944 | appl_ptr %= runtime->boundary; | |
1945 | runtime->control->appl_ptr = appl_ptr; | |
1946 | } | |
1947 | ||
6ac77bc1 | 1948 | static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger) |
1da177e4 | 1949 | { |
6ac77bc1 TI |
1950 | struct snd_pcm_runtime *runtime; |
1951 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; | |
1da177e4 LT |
1952 | int err, cmd; |
1953 | ||
1954 | #ifdef OSS_DEBUG | |
1955 | printk("pcm_oss: trigger = 0x%x\n", trigger); | |
1956 | #endif | |
1957 | ||
1958 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1959 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1960 | ||
1961 | if (psubstream) { | |
1962 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) | |
1963 | return err; | |
1964 | } | |
1965 | if (csubstream) { | |
1966 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) | |
1967 | return err; | |
1968 | } | |
1969 | if (psubstream) { | |
1970 | runtime = psubstream->runtime; | |
1971 | if (trigger & PCM_ENABLE_OUTPUT) { | |
1972 | if (runtime->oss.trigger) | |
1973 | goto _skip1; | |
9c323fcb | 1974 | if (atomic_read(&psubstream->mmap_count)) |
1da177e4 LT |
1975 | snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); |
1976 | runtime->oss.trigger = 1; | |
1977 | runtime->start_threshold = 1; | |
1978 | cmd = SNDRV_PCM_IOCTL_START; | |
1979 | } else { | |
1980 | if (!runtime->oss.trigger) | |
1981 | goto _skip1; | |
1982 | runtime->oss.trigger = 0; | |
1983 | runtime->start_threshold = runtime->boundary; | |
1984 | cmd = SNDRV_PCM_IOCTL_DROP; | |
1985 | runtime->oss.prepare = 1; | |
1986 | } | |
bf1bbb5a | 1987 | err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL); |
1da177e4 LT |
1988 | if (err < 0) |
1989 | return err; | |
1990 | } | |
1991 | _skip1: | |
1992 | if (csubstream) { | |
1993 | runtime = csubstream->runtime; | |
1994 | if (trigger & PCM_ENABLE_INPUT) { | |
1995 | if (runtime->oss.trigger) | |
1996 | goto _skip2; | |
1997 | runtime->oss.trigger = 1; | |
1998 | runtime->start_threshold = 1; | |
1999 | cmd = SNDRV_PCM_IOCTL_START; | |
2000 | } else { | |
2001 | if (!runtime->oss.trigger) | |
2002 | goto _skip2; | |
2003 | runtime->oss.trigger = 0; | |
2004 | runtime->start_threshold = runtime->boundary; | |
2005 | cmd = SNDRV_PCM_IOCTL_DROP; | |
2006 | runtime->oss.prepare = 1; | |
2007 | } | |
bf1bbb5a | 2008 | err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL); |
1da177e4 LT |
2009 | if (err < 0) |
2010 | return err; | |
2011 | } | |
2012 | _skip2: | |
2013 | return 0; | |
2014 | } | |
2015 | ||
6ac77bc1 | 2016 | static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 2017 | { |
6ac77bc1 | 2018 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
1da177e4 LT |
2019 | int result = 0; |
2020 | ||
2021 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2022 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2023 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) | |
2024 | result |= PCM_ENABLE_OUTPUT; | |
2025 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) | |
2026 | result |= PCM_ENABLE_INPUT; | |
2027 | return result; | |
2028 | } | |
2029 | ||
6ac77bc1 | 2030 | static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 2031 | { |
6ac77bc1 TI |
2032 | struct snd_pcm_substream *substream; |
2033 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2034 | snd_pcm_sframes_t delay; |
2035 | int err; | |
2036 | ||
2037 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2038 | if (substream == NULL) | |
2039 | return -EINVAL; | |
2040 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
2041 | return err; | |
2042 | runtime = substream->runtime; | |
2043 | if (runtime->oss.params || runtime->oss.prepare) | |
2044 | return 0; | |
bf1bbb5a | 2045 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
1da177e4 LT |
2046 | if (err == -EPIPE) |
2047 | delay = 0; /* hack for broken OSS applications */ | |
2048 | else if (err < 0) | |
2049 | return err; | |
2050 | return snd_pcm_oss_bytes(substream, delay); | |
2051 | } | |
2052 | ||
6ac77bc1 | 2053 | static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info) |
1da177e4 | 2054 | { |
6ac77bc1 TI |
2055 | struct snd_pcm_substream *substream; |
2056 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2057 | snd_pcm_sframes_t delay; |
2058 | int fixup; | |
2059 | struct count_info info; | |
2060 | int err; | |
2061 | ||
2062 | if (_info == NULL) | |
2063 | return -EFAULT; | |
2064 | substream = pcm_oss_file->streams[stream]; | |
2065 | if (substream == NULL) | |
2066 | return -EINVAL; | |
2067 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
2068 | return err; | |
2069 | runtime = substream->runtime; | |
2070 | if (runtime->oss.params || runtime->oss.prepare) { | |
2071 | memset(&info, 0, sizeof(info)); | |
2072 | if (copy_to_user(_info, &info, sizeof(info))) | |
2073 | return -EFAULT; | |
2074 | return 0; | |
2075 | } | |
2076 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
2077 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); | |
2078 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { | |
2079 | err = 0; | |
2080 | delay = 0; | |
2081 | fixup = 0; | |
2082 | } else { | |
2083 | fixup = runtime->oss.buffer_used; | |
2084 | } | |
2085 | } else { | |
2086 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); | |
2087 | fixup = -runtime->oss.buffer_used; | |
2088 | } | |
2089 | if (err < 0) | |
2090 | return err; | |
2091 | info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size); | |
9c323fcb | 2092 | if (atomic_read(&substream->mmap_count)) { |
1da177e4 LT |
2093 | snd_pcm_sframes_t n; |
2094 | n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; | |
2095 | if (n < 0) | |
2096 | n += runtime->boundary; | |
2097 | info.blocks = n / runtime->period_size; | |
2098 | runtime->oss.prev_hw_ptr_interrupt = delay; | |
2099 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2100 | snd_pcm_oss_simulate_fill(substream, delay); | |
2101 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; | |
2102 | } else { | |
5ac0fab9 | 2103 | delay = snd_pcm_oss_bytes(substream, delay); |
fb4bd0ad | 2104 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
060d77b9 | 2105 | if (substream->oss.setup.buggyptr) |
10f69f9e TI |
2106 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
2107 | else | |
2108 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; | |
1da177e4 | 2109 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
fb4bd0ad | 2110 | } else { |
5ac0fab9 JK |
2111 | delay += fixup; |
2112 | info.blocks = delay / runtime->oss.period_bytes; | |
1da177e4 | 2113 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
fb4bd0ad | 2114 | } |
1da177e4 LT |
2115 | } |
2116 | if (copy_to_user(_info, &info, sizeof(info))) | |
2117 | return -EFAULT; | |
2118 | return 0; | |
2119 | } | |
2120 | ||
6ac77bc1 | 2121 | static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info) |
1da177e4 | 2122 | { |
6ac77bc1 TI |
2123 | struct snd_pcm_substream *substream; |
2124 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2125 | snd_pcm_sframes_t avail; |
2126 | int fixup; | |
2127 | struct audio_buf_info info; | |
2128 | int err; | |
2129 | ||
2130 | if (_info == NULL) | |
2131 | return -EFAULT; | |
2132 | substream = pcm_oss_file->streams[stream]; | |
2133 | if (substream == NULL) | |
2134 | return -EINVAL; | |
2135 | runtime = substream->runtime; | |
2136 | ||
2137 | if (runtime->oss.params && | |
2138 | (err = snd_pcm_oss_change_params(substream)) < 0) | |
2139 | return err; | |
2140 | ||
2141 | info.fragsize = runtime->oss.period_bytes; | |
2142 | info.fragstotal = runtime->periods; | |
2143 | if (runtime->oss.prepare) { | |
2144 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
2145 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; | |
2146 | info.fragments = runtime->oss.periods; | |
2147 | } else { | |
2148 | info.bytes = 0; | |
2149 | info.fragments = 0; | |
2150 | } | |
2151 | } else { | |
2152 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
2153 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); | |
2154 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { | |
2155 | avail = runtime->buffer_size; | |
2156 | err = 0; | |
2157 | fixup = 0; | |
2158 | } else { | |
2159 | avail = runtime->buffer_size - avail; | |
2160 | fixup = -runtime->oss.buffer_used; | |
2161 | } | |
2162 | } else { | |
2163 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); | |
2164 | fixup = runtime->oss.buffer_used; | |
2165 | } | |
2166 | if (err < 0) | |
2167 | return err; | |
2168 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; | |
2169 | info.fragments = info.bytes / runtime->oss.period_bytes; | |
2170 | } | |
2171 | ||
2172 | #ifdef OSS_DEBUG | |
2173 | printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); | |
2174 | #endif | |
2175 | if (copy_to_user(_info, &info, sizeof(info))) | |
2176 | return -EFAULT; | |
2177 | return 0; | |
2178 | } | |
2179 | ||
6ac77bc1 | 2180 | static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info) |
1da177e4 LT |
2181 | { |
2182 | // it won't be probably implemented | |
2183 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); | |
2184 | return -EINVAL; | |
2185 | } | |
2186 | ||
060d77b9 | 2187 | static const char *strip_task_path(const char *path) |
1da177e4 | 2188 | { |
060d77b9 TI |
2189 | const char *ptr, *ptrl = NULL; |
2190 | for (ptr = path; *ptr; ptr++) { | |
1da177e4 LT |
2191 | if (*ptr == '/') |
2192 | ptrl = ptr + 1; | |
1da177e4 | 2193 | } |
060d77b9 TI |
2194 | return ptrl; |
2195 | } | |
2196 | ||
2197 | static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, | |
2198 | const char *task_name, | |
2199 | struct snd_pcm_oss_setup *rsetup) | |
2200 | { | |
2201 | struct snd_pcm_oss_setup *setup; | |
2202 | ||
2203 | mutex_lock(&pcm->streams[stream].oss.setup_mutex); | |
2204 | do { | |
2205 | for (setup = pcm->streams[stream].oss.setup_list; setup; | |
2206 | setup = setup->next) { | |
2207 | if (!strcmp(setup->task_name, task_name)) | |
2208 | goto out; | |
1da177e4 | 2209 | } |
060d77b9 TI |
2210 | } while ((task_name = strip_task_path(task_name)) != NULL); |
2211 | out: | |
2212 | if (setup) | |
2213 | *rsetup = *setup; | |
1a60d4c5 | 2214 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
1da177e4 LT |
2215 | } |
2216 | ||
3bf75f9b TI |
2217 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
2218 | { | |
2219 | struct snd_pcm_runtime *runtime; | |
2220 | runtime = substream->runtime; | |
2221 | vfree(runtime->oss.buffer); | |
2222 | runtime->oss.buffer = NULL; | |
2223 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS | |
2224 | snd_pcm_oss_plugin_clear(substream); | |
2225 | #endif | |
2226 | substream->oss.oss = 0; | |
2227 | } | |
2228 | ||
6ac77bc1 TI |
2229 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
2230 | struct snd_pcm_oss_setup *setup, | |
1da177e4 LT |
2231 | int minor) |
2232 | { | |
6ac77bc1 | 2233 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
2234 | |
2235 | substream->oss.oss = 1; | |
060d77b9 | 2236 | substream->oss.setup = *setup; |
3bf75f9b | 2237 | if (setup->nonblock) |
0df63e44 | 2238 | substream->f_flags |= O_NONBLOCK; |
1576274d | 2239 | else if (setup->block) |
0df63e44 | 2240 | substream->f_flags &= ~O_NONBLOCK; |
1da177e4 LT |
2241 | runtime = substream->runtime; |
2242 | runtime->oss.params = 1; | |
2243 | runtime->oss.trigger = 1; | |
2244 | runtime->oss.rate = 8000; | |
e3a5d59a | 2245 | mutex_init(&runtime->oss.params_lock); |
1da177e4 LT |
2246 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { |
2247 | case SNDRV_MINOR_OSS_PCM_8: | |
2248 | runtime->oss.format = AFMT_U8; | |
2249 | break; | |
2250 | case SNDRV_MINOR_OSS_PCM_16: | |
2251 | runtime->oss.format = AFMT_S16_LE; | |
2252 | break; | |
2253 | default: | |
2254 | runtime->oss.format = AFMT_MU_LAW; | |
2255 | } | |
2256 | runtime->oss.channels = 1; | |
2257 | runtime->oss.fragshift = 0; | |
2258 | runtime->oss.maxfrags = 0; | |
2259 | runtime->oss.subdivision = 0; | |
3bf75f9b | 2260 | substream->pcm_release = snd_pcm_oss_release_substream; |
1da177e4 LT |
2261 | } |
2262 | ||
6ac77bc1 | 2263 | static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
2264 | { |
2265 | int cidx; | |
7eaa943c TI |
2266 | if (!pcm_oss_file) |
2267 | return 0; | |
1da177e4 | 2268 | for (cidx = 0; cidx < 2; ++cidx) { |
6ac77bc1 | 2269 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
3bf75f9b TI |
2270 | if (substream) |
2271 | snd_pcm_release_substream(substream); | |
1da177e4 LT |
2272 | } |
2273 | kfree(pcm_oss_file); | |
2274 | return 0; | |
2275 | } | |
2276 | ||
2277 | static int snd_pcm_oss_open_file(struct file *file, | |
6ac77bc1 TI |
2278 | struct snd_pcm *pcm, |
2279 | struct snd_pcm_oss_file **rpcm_oss_file, | |
1da177e4 | 2280 | int minor, |
060d77b9 | 2281 | struct snd_pcm_oss_setup *setup) |
1da177e4 | 2282 | { |
3bf75f9b | 2283 | int idx, err; |
6ac77bc1 | 2284 | struct snd_pcm_oss_file *pcm_oss_file; |
3bf75f9b | 2285 | struct snd_pcm_substream *substream; |
aeb5d727 | 2286 | fmode_t f_mode = file->f_mode; |
1da177e4 | 2287 | |
7eaa943c TI |
2288 | if (rpcm_oss_file) |
2289 | *rpcm_oss_file = NULL; | |
1da177e4 | 2290 | |
ca2c0966 | 2291 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
1da177e4 LT |
2292 | if (pcm_oss_file == NULL) |
2293 | return -ENOMEM; | |
2294 | ||
2295 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && | |
2296 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) | |
2297 | f_mode = FMODE_WRITE; | |
3bf75f9b | 2298 | |
0df63e44 | 2299 | file->f_flags &= ~O_APPEND; |
3bf75f9b | 2300 | for (idx = 0; idx < 2; idx++) { |
060d77b9 | 2301 | if (setup[idx].disable) |
3bf75f9b | 2302 | continue; |
6cb53e7e TI |
2303 | if (! pcm->streams[idx].substream_count) |
2304 | continue; /* no matching substream */ | |
3bf75f9b TI |
2305 | if (idx == SNDRV_PCM_STREAM_PLAYBACK) { |
2306 | if (! (f_mode & FMODE_WRITE)) | |
2307 | continue; | |
2308 | } else { | |
2309 | if (! (f_mode & FMODE_READ)) | |
2310 | continue; | |
2311 | } | |
2312 | err = snd_pcm_open_substream(pcm, idx, file, &substream); | |
2313 | if (err < 0) { | |
1da177e4 LT |
2314 | snd_pcm_oss_release_file(pcm_oss_file); |
2315 | return err; | |
2316 | } | |
3bf75f9b TI |
2317 | |
2318 | pcm_oss_file->streams[idx] = substream; | |
1576274d | 2319 | substream->file = pcm_oss_file; |
060d77b9 | 2320 | snd_pcm_oss_init_substream(substream, &setup[idx], minor); |
1da177e4 LT |
2321 | } |
2322 | ||
bbdc1b7d | 2323 | if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) { |
1da177e4 LT |
2324 | snd_pcm_oss_release_file(pcm_oss_file); |
2325 | return -EINVAL; | |
2326 | } | |
1da177e4 LT |
2327 | |
2328 | file->private_data = pcm_oss_file; | |
7eaa943c TI |
2329 | if (rpcm_oss_file) |
2330 | *rpcm_oss_file = pcm_oss_file; | |
1da177e4 LT |
2331 | return 0; |
2332 | } | |
2333 | ||
2334 | ||
93f2e378 TI |
2335 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
2336 | { | |
2337 | unsigned int idx; | |
2338 | ||
7eaa943c TI |
2339 | if (snd_BUG_ON(!task || !name || size < 2)) |
2340 | return -EINVAL; | |
93f2e378 TI |
2341 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) |
2342 | name[idx] = task->comm[idx]; | |
2343 | name[idx] = '\0'; | |
2344 | return 0; | |
2345 | } | |
2346 | ||
1da177e4 LT |
2347 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
2348 | { | |
1da177e4 LT |
2349 | int err; |
2350 | char task_name[32]; | |
6ac77bc1 TI |
2351 | struct snd_pcm *pcm; |
2352 | struct snd_pcm_oss_file *pcm_oss_file; | |
060d77b9 | 2353 | struct snd_pcm_oss_setup setup[2]; |
1da177e4 LT |
2354 | int nonblock; |
2355 | wait_queue_t wait; | |
2356 | ||
f87135f5 CL |
2357 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
2358 | SNDRV_OSS_DEVICE_TYPE_PCM); | |
1da177e4 LT |
2359 | if (pcm == NULL) { |
2360 | err = -ENODEV; | |
2361 | goto __error1; | |
2362 | } | |
2363 | err = snd_card_file_add(pcm->card, file); | |
2364 | if (err < 0) | |
2365 | goto __error1; | |
2366 | if (!try_module_get(pcm->card->module)) { | |
2367 | err = -EFAULT; | |
2368 | goto __error2; | |
2369 | } | |
2370 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { | |
2371 | err = -EFAULT; | |
2372 | goto __error; | |
2373 | } | |
1576274d | 2374 | memset(setup, 0, sizeof(setup)); |
1da177e4 | 2375 | if (file->f_mode & FMODE_WRITE) |
060d77b9 TI |
2376 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
2377 | task_name, &setup[0]); | |
1da177e4 | 2378 | if (file->f_mode & FMODE_READ) |
060d77b9 TI |
2379 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, |
2380 | task_name, &setup[1]); | |
1da177e4 LT |
2381 | |
2382 | nonblock = !!(file->f_flags & O_NONBLOCK); | |
1da177e4 LT |
2383 | if (!nonblock) |
2384 | nonblock = nonblock_open; | |
2385 | ||
2386 | init_waitqueue_entry(&wait, current); | |
2387 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2388 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2389 | while (1) { |
2390 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, | |
3bf75f9b | 2391 | iminor(inode), setup); |
1da177e4 LT |
2392 | if (err >= 0) |
2393 | break; | |
2394 | if (err == -EAGAIN) { | |
2395 | if (nonblock) { | |
2396 | err = -EBUSY; | |
2397 | break; | |
2398 | } | |
2399 | } else | |
2400 | break; | |
2401 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2402 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2403 | schedule(); |
1a60d4c5 | 2404 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2405 | if (signal_pending(current)) { |
2406 | err = -ERESTARTSYS; | |
2407 | break; | |
2408 | } | |
2409 | } | |
2410 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2411 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2412 | if (err < 0) |
2413 | goto __error; | |
2414 | return err; | |
2415 | ||
2416 | __error: | |
2417 | module_put(pcm->card->module); | |
2418 | __error2: | |
2419 | snd_card_file_remove(pcm->card, file); | |
2420 | __error1: | |
2421 | return err; | |
2422 | } | |
2423 | ||
2424 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) | |
2425 | { | |
6ac77bc1 TI |
2426 | struct snd_pcm *pcm; |
2427 | struct snd_pcm_substream *substream; | |
2428 | struct snd_pcm_oss_file *pcm_oss_file; | |
1da177e4 LT |
2429 | |
2430 | pcm_oss_file = file->private_data; | |
2431 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2432 | if (substream == NULL) | |
2433 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
7eaa943c TI |
2434 | if (snd_BUG_ON(!substream)) |
2435 | return -ENXIO; | |
1da177e4 | 2436 | pcm = substream->pcm; |
de1b8b93 TI |
2437 | if (!pcm->card->shutdown) |
2438 | snd_pcm_oss_sync(pcm_oss_file); | |
1a60d4c5 | 2439 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2440 | snd_pcm_oss_release_file(pcm_oss_file); |
1a60d4c5 | 2441 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2442 | wake_up(&pcm->open_wait); |
2443 | module_put(pcm->card->module); | |
2444 | snd_card_file_remove(pcm->card, file); | |
2445 | return 0; | |
2446 | } | |
2447 | ||
2448 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
2449 | { | |
6ac77bc1 | 2450 | struct snd_pcm_oss_file *pcm_oss_file; |
1da177e4 LT |
2451 | int __user *p = (int __user *)arg; |
2452 | int res; | |
2453 | ||
2454 | pcm_oss_file = file->private_data; | |
2455 | if (cmd == OSS_GETVERSION) | |
2456 | return put_user(SNDRV_OSS_VERSION, p); | |
2457 | if (cmd == OSS_ALSAEMULVER) | |
2458 | return put_user(1, p); | |
2459 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) | |
2460 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ | |
6ac77bc1 | 2461 | struct snd_pcm_substream *substream; |
1da177e4 LT |
2462 | int idx; |
2463 | for (idx = 0; idx < 2; ++idx) { | |
2464 | substream = pcm_oss_file->streams[idx]; | |
2465 | if (substream != NULL) | |
2466 | break; | |
2467 | } | |
7eaa943c TI |
2468 | if (snd_BUG_ON(idx >= 2)) |
2469 | return -ENXIO; | |
1da177e4 LT |
2470 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); |
2471 | } | |
2472 | #endif | |
2473 | if (((cmd >> 8) & 0xff) != 'P') | |
2474 | return -EINVAL; | |
2475 | #ifdef OSS_DEBUG | |
2476 | printk("pcm_oss: ioctl = 0x%x\n", cmd); | |
2477 | #endif | |
2478 | switch (cmd) { | |
2479 | case SNDCTL_DSP_RESET: | |
2480 | return snd_pcm_oss_reset(pcm_oss_file); | |
2481 | case SNDCTL_DSP_SYNC: | |
2482 | return snd_pcm_oss_sync(pcm_oss_file); | |
2483 | case SNDCTL_DSP_SPEED: | |
2484 | if (get_user(res, p)) | |
2485 | return -EFAULT; | |
2486 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) | |
2487 | return res; | |
2488 | return put_user(res, p); | |
2489 | case SOUND_PCM_READ_RATE: | |
2490 | res = snd_pcm_oss_get_rate(pcm_oss_file); | |
2491 | if (res < 0) | |
2492 | return res; | |
2493 | return put_user(res, p); | |
2494 | case SNDCTL_DSP_STEREO: | |
2495 | if (get_user(res, p)) | |
2496 | return -EFAULT; | |
2497 | res = res > 0 ? 2 : 1; | |
2498 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) | |
2499 | return res; | |
2500 | return put_user(--res, p); | |
2501 | case SNDCTL_DSP_GETBLKSIZE: | |
2502 | res = snd_pcm_oss_get_block_size(pcm_oss_file); | |
2503 | if (res < 0) | |
2504 | return res; | |
2505 | return put_user(res, p); | |
2506 | case SNDCTL_DSP_SETFMT: | |
2507 | if (get_user(res, p)) | |
2508 | return -EFAULT; | |
2509 | res = snd_pcm_oss_set_format(pcm_oss_file, res); | |
2510 | if (res < 0) | |
2511 | return res; | |
2512 | return put_user(res, p); | |
2513 | case SOUND_PCM_READ_BITS: | |
2514 | res = snd_pcm_oss_get_format(pcm_oss_file); | |
2515 | if (res < 0) | |
2516 | return res; | |
2517 | return put_user(res, p); | |
2518 | case SNDCTL_DSP_CHANNELS: | |
2519 | if (get_user(res, p)) | |
2520 | return -EFAULT; | |
2521 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); | |
2522 | if (res < 0) | |
2523 | return res; | |
2524 | return put_user(res, p); | |
2525 | case SOUND_PCM_READ_CHANNELS: | |
2526 | res = snd_pcm_oss_get_channels(pcm_oss_file); | |
2527 | if (res < 0) | |
2528 | return res; | |
2529 | return put_user(res, p); | |
2530 | case SOUND_PCM_WRITE_FILTER: | |
2531 | case SOUND_PCM_READ_FILTER: | |
2532 | return -EIO; | |
2533 | case SNDCTL_DSP_POST: | |
2534 | return snd_pcm_oss_post(pcm_oss_file); | |
2535 | case SNDCTL_DSP_SUBDIVIDE: | |
2536 | if (get_user(res, p)) | |
2537 | return -EFAULT; | |
2538 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); | |
2539 | if (res < 0) | |
2540 | return res; | |
2541 | return put_user(res, p); | |
2542 | case SNDCTL_DSP_SETFRAGMENT: | |
2543 | if (get_user(res, p)) | |
2544 | return -EFAULT; | |
2545 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); | |
2546 | case SNDCTL_DSP_GETFMTS: | |
2547 | res = snd_pcm_oss_get_formats(pcm_oss_file); | |
2548 | if (res < 0) | |
2549 | return res; | |
2550 | return put_user(res, p); | |
2551 | case SNDCTL_DSP_GETOSPACE: | |
2552 | case SNDCTL_DSP_GETISPACE: | |
2553 | return snd_pcm_oss_get_space(pcm_oss_file, | |
2554 | cmd == SNDCTL_DSP_GETISPACE ? | |
2555 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2556 | (struct audio_buf_info __user *) arg); | |
2557 | case SNDCTL_DSP_NONBLOCK: | |
2558 | return snd_pcm_oss_nonblock(file); | |
2559 | case SNDCTL_DSP_GETCAPS: | |
2560 | res = snd_pcm_oss_get_caps(pcm_oss_file); | |
2561 | if (res < 0) | |
2562 | return res; | |
2563 | return put_user(res, p); | |
2564 | case SNDCTL_DSP_GETTRIGGER: | |
2565 | res = snd_pcm_oss_get_trigger(pcm_oss_file); | |
2566 | if (res < 0) | |
2567 | return res; | |
2568 | return put_user(res, p); | |
2569 | case SNDCTL_DSP_SETTRIGGER: | |
2570 | if (get_user(res, p)) | |
2571 | return -EFAULT; | |
2572 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); | |
2573 | case SNDCTL_DSP_GETIPTR: | |
2574 | case SNDCTL_DSP_GETOPTR: | |
2575 | return snd_pcm_oss_get_ptr(pcm_oss_file, | |
2576 | cmd == SNDCTL_DSP_GETIPTR ? | |
2577 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2578 | (struct count_info __user *) arg); | |
2579 | case SNDCTL_DSP_MAPINBUF: | |
2580 | case SNDCTL_DSP_MAPOUTBUF: | |
2581 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, | |
2582 | cmd == SNDCTL_DSP_MAPINBUF ? | |
2583 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2584 | (struct buffmem_desc __user *) arg); | |
2585 | case SNDCTL_DSP_SETSYNCRO: | |
2586 | /* stop DMA now.. */ | |
2587 | return 0; | |
2588 | case SNDCTL_DSP_SETDUPLEX: | |
2589 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) | |
2590 | return 0; | |
2591 | return -EIO; | |
2592 | case SNDCTL_DSP_GETODELAY: | |
2593 | res = snd_pcm_oss_get_odelay(pcm_oss_file); | |
2594 | if (res < 0) { | |
2595 | /* it's for sure, some broken apps don't check for error codes */ | |
2596 | put_user(0, p); | |
2597 | return res; | |
2598 | } | |
2599 | return put_user(res, p); | |
2600 | case SNDCTL_DSP_PROFILE: | |
2601 | return 0; /* silently ignore */ | |
2602 | default: | |
2603 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); | |
2604 | } | |
2605 | return -EINVAL; | |
2606 | } | |
2607 | ||
2608 | #ifdef CONFIG_COMPAT | |
2609 | /* all compatible */ | |
2610 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl | |
2611 | #else | |
2612 | #define snd_pcm_oss_ioctl_compat NULL | |
2613 | #endif | |
2614 | ||
2615 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
2616 | { | |
6ac77bc1 TI |
2617 | struct snd_pcm_oss_file *pcm_oss_file; |
2618 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
2619 | |
2620 | pcm_oss_file = file->private_data; | |
2621 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2622 | if (substream == NULL) | |
2623 | return -ENXIO; | |
0df63e44 | 2624 | substream->f_flags = file->f_flags & O_NONBLOCK; |
1da177e4 LT |
2625 | #ifndef OSS_DEBUG |
2626 | return snd_pcm_oss_read1(substream, buf, count); | |
2627 | #else | |
2628 | { | |
2629 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); | |
2630 | printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); | |
2631 | return res; | |
2632 | } | |
2633 | #endif | |
2634 | } | |
2635 | ||
2636 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) | |
2637 | { | |
6ac77bc1 TI |
2638 | struct snd_pcm_oss_file *pcm_oss_file; |
2639 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
2640 | long result; |
2641 | ||
2642 | pcm_oss_file = file->private_data; | |
2643 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2644 | if (substream == NULL) | |
2645 | return -ENXIO; | |
0df63e44 | 2646 | substream->f_flags = file->f_flags & O_NONBLOCK; |
1da177e4 | 2647 | result = snd_pcm_oss_write1(substream, buf, count); |
1da177e4 LT |
2648 | #ifdef OSS_DEBUG |
2649 | printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); | |
2650 | #endif | |
2651 | return result; | |
2652 | } | |
2653 | ||
6ac77bc1 | 2654 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
1da177e4 | 2655 | { |
6ac77bc1 | 2656 | struct snd_pcm_runtime *runtime = substream->runtime; |
9c323fcb | 2657 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
2658 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
2659 | else | |
2660 | return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; | |
2661 | } | |
2662 | ||
6ac77bc1 | 2663 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
1da177e4 | 2664 | { |
6ac77bc1 | 2665 | struct snd_pcm_runtime *runtime = substream->runtime; |
9c323fcb | 2666 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
2667 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; |
2668 | else | |
2669 | return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; | |
2670 | } | |
2671 | ||
2672 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) | |
2673 | { | |
6ac77bc1 | 2674 | struct snd_pcm_oss_file *pcm_oss_file; |
1da177e4 | 2675 | unsigned int mask; |
6ac77bc1 | 2676 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
1da177e4 LT |
2677 | |
2678 | pcm_oss_file = file->private_data; | |
2679 | ||
2680 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2681 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2682 | ||
2683 | mask = 0; | |
2684 | if (psubstream != NULL) { | |
6ac77bc1 | 2685 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
1da177e4 LT |
2686 | poll_wait(file, &runtime->sleep, wait); |
2687 | snd_pcm_stream_lock_irq(psubstream); | |
2688 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && | |
2689 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || | |
2690 | snd_pcm_oss_playback_ready(psubstream))) | |
2691 | mask |= POLLOUT | POLLWRNORM; | |
2692 | snd_pcm_stream_unlock_irq(psubstream); | |
2693 | } | |
2694 | if (csubstream != NULL) { | |
6ac77bc1 TI |
2695 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
2696 | snd_pcm_state_t ostate; | |
1da177e4 LT |
2697 | poll_wait(file, &runtime->sleep, wait); |
2698 | snd_pcm_stream_lock_irq(csubstream); | |
2699 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || | |
2700 | snd_pcm_oss_capture_ready(csubstream)) | |
2701 | mask |= POLLIN | POLLRDNORM; | |
2702 | snd_pcm_stream_unlock_irq(csubstream); | |
2703 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { | |
6ac77bc1 | 2704 | struct snd_pcm_oss_file ofile; |
1da177e4 LT |
2705 | memset(&ofile, 0, sizeof(ofile)); |
2706 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2707 | runtime->oss.trigger = 0; | |
2708 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); | |
2709 | } | |
2710 | } | |
2711 | ||
2712 | return mask; | |
2713 | } | |
2714 | ||
2715 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) | |
2716 | { | |
6ac77bc1 TI |
2717 | struct snd_pcm_oss_file *pcm_oss_file; |
2718 | struct snd_pcm_substream *substream = NULL; | |
2719 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2720 | int err; |
2721 | ||
2722 | #ifdef OSS_DEBUG | |
2723 | printk("pcm_oss: mmap begin\n"); | |
2724 | #endif | |
2725 | pcm_oss_file = file->private_data; | |
2726 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { | |
2727 | case VM_READ | VM_WRITE: | |
2728 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2729 | if (substream) | |
2730 | break; | |
2731 | /* Fall through */ | |
2732 | case VM_READ: | |
2733 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2734 | break; | |
2735 | case VM_WRITE: | |
2736 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2737 | break; | |
2738 | default: | |
2739 | return -EINVAL; | |
2740 | } | |
2741 | /* set VM_READ access as well to fix memset() routines that do | |
2742 | reads before writes (to improve performance) */ | |
2743 | area->vm_flags |= VM_READ; | |
2744 | if (substream == NULL) | |
2745 | return -ENXIO; | |
2746 | runtime = substream->runtime; | |
2747 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) | |
2748 | return -EIO; | |
2749 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) | |
2750 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
2751 | else | |
2752 | return -EIO; | |
2753 | ||
2754 | if (runtime->oss.params) { | |
2755 | if ((err = snd_pcm_oss_change_params(substream)) < 0) | |
2756 | return err; | |
2757 | } | |
21a3479a | 2758 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
2759 | if (runtime->oss.plugin_first != NULL) |
2760 | return -EIO; | |
21a3479a | 2761 | #endif |
1da177e4 LT |
2762 | |
2763 | if (area->vm_pgoff != 0) | |
2764 | return -EINVAL; | |
2765 | ||
2766 | err = snd_pcm_mmap_data(substream, file, area); | |
2767 | if (err < 0) | |
2768 | return err; | |
2769 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; | |
2770 | runtime->silence_threshold = 0; | |
2771 | runtime->silence_size = 0; | |
2772 | #ifdef OSS_DEBUG | |
2773 | printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); | |
2774 | #endif | |
2775 | /* In mmap mode we never stop */ | |
2776 | runtime->stop_threshold = runtime->boundary; | |
2777 | ||
2778 | return 0; | |
2779 | } | |
2780 | ||
b7d90a35 | 2781 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
1da177e4 LT |
2782 | /* |
2783 | * /proc interface | |
2784 | */ | |
2785 | ||
6ac77bc1 TI |
2786 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
2787 | struct snd_info_buffer *buffer) | |
1da177e4 | 2788 | { |
6ac77bc1 TI |
2789 | struct snd_pcm_str *pstr = entry->private_data; |
2790 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; | |
1a60d4c5 | 2791 | mutex_lock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2792 | while (setup) { |
2793 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", | |
2794 | setup->task_name, | |
2795 | setup->periods, | |
2796 | setup->period_size, | |
2797 | setup->disable ? " disable" : "", | |
2798 | setup->direct ? " direct" : "", | |
2799 | setup->block ? " block" : "", | |
2800 | setup->nonblock ? " non-block" : "", | |
2801 | setup->partialfrag ? " partial-frag" : "", | |
2802 | setup->nosilence ? " no-silence" : ""); | |
2803 | setup = setup->next; | |
2804 | } | |
1a60d4c5 | 2805 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2806 | } |
2807 | ||
6ac77bc1 | 2808 | static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr) |
1da177e4 | 2809 | { |
6ac77bc1 | 2810 | struct snd_pcm_oss_setup *setup, *setupn; |
1da177e4 | 2811 | |
1da177e4 LT |
2812 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
2813 | setup; setup = setupn) { | |
2814 | setupn = setup->next; | |
2815 | kfree(setup->task_name); | |
2816 | kfree(setup); | |
2817 | } | |
2818 | pstr->oss.setup_list = NULL; | |
2819 | } | |
2820 | ||
6ac77bc1 TI |
2821 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
2822 | struct snd_info_buffer *buffer) | |
1da177e4 | 2823 | { |
6ac77bc1 | 2824 | struct snd_pcm_str *pstr = entry->private_data; |
1da177e4 LT |
2825 | char line[128], str[32], task_name[32], *ptr; |
2826 | int idx1; | |
6ac77bc1 | 2827 | struct snd_pcm_oss_setup *setup, *setup1, template; |
1da177e4 LT |
2828 | |
2829 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
1a60d4c5 | 2830 | mutex_lock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2831 | memset(&template, 0, sizeof(template)); |
2832 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); | |
2833 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { | |
2834 | snd_pcm_oss_proc_free_setup_list(pstr); | |
1a60d4c5 | 2835 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2836 | continue; |
2837 | } | |
2838 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { | |
2839 | if (!strcmp(setup->task_name, task_name)) { | |
2840 | template = *setup; | |
2841 | break; | |
2842 | } | |
2843 | } | |
2844 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2845 | template.periods = simple_strtoul(str, NULL, 10); | |
2846 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2847 | template.period_size = simple_strtoul(str, NULL, 10); | |
2848 | for (idx1 = 31; idx1 >= 0; idx1--) | |
2849 | if (template.period_size & (1 << idx1)) | |
2850 | break; | |
2851 | for (idx1--; idx1 >= 0; idx1--) | |
2852 | template.period_size &= ~(1 << idx1); | |
2853 | do { | |
2854 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2855 | if (!strcmp(str, "disable")) { | |
2856 | template.disable = 1; | |
2857 | } else if (!strcmp(str, "direct")) { | |
2858 | template.direct = 1; | |
2859 | } else if (!strcmp(str, "block")) { | |
2860 | template.block = 1; | |
2861 | } else if (!strcmp(str, "non-block")) { | |
2862 | template.nonblock = 1; | |
2863 | } else if (!strcmp(str, "partial-frag")) { | |
2864 | template.partialfrag = 1; | |
2865 | } else if (!strcmp(str, "no-silence")) { | |
2866 | template.nosilence = 1; | |
10f69f9e TI |
2867 | } else if (!strcmp(str, "buggy-ptr")) { |
2868 | template.buggyptr = 1; | |
1da177e4 LT |
2869 | } |
2870 | } while (*str); | |
2871 | if (setup == NULL) { | |
060d77b9 TI |
2872 | setup = kmalloc(sizeof(*setup), GFP_KERNEL); |
2873 | if (! setup) { | |
2874 | buffer->error = -ENOMEM; | |
2875 | mutex_lock(&pstr->oss.setup_mutex); | |
2876 | return; | |
2877 | } | |
2878 | if (pstr->oss.setup_list == NULL) | |
2879 | pstr->oss.setup_list = setup; | |
2880 | else { | |
2881 | for (setup1 = pstr->oss.setup_list; | |
2882 | setup1->next; setup1 = setup1->next); | |
2883 | setup1->next = setup; | |
2884 | } | |
2885 | template.task_name = kstrdup(task_name, GFP_KERNEL); | |
2886 | if (! template.task_name) { | |
2887 | kfree(setup); | |
1da177e4 | 2888 | buffer->error = -ENOMEM; |
060d77b9 TI |
2889 | mutex_lock(&pstr->oss.setup_mutex); |
2890 | return; | |
1da177e4 LT |
2891 | } |
2892 | } | |
060d77b9 | 2893 | *setup = template; |
1a60d4c5 | 2894 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2895 | } |
2896 | } | |
2897 | ||
6ac77bc1 | 2898 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
1da177e4 LT |
2899 | { |
2900 | int stream; | |
2901 | for (stream = 0; stream < 2; ++stream) { | |
6ac77bc1 TI |
2902 | struct snd_info_entry *entry; |
2903 | struct snd_pcm_str *pstr = &pcm->streams[stream]; | |
1da177e4 LT |
2904 | if (pstr->substream_count == 0) |
2905 | continue; | |
2906 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { | |
2907 | entry->content = SNDRV_INFO_CONTENT_TEXT; | |
2908 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; | |
1da177e4 | 2909 | entry->c.text.read = snd_pcm_oss_proc_read; |
1da177e4 LT |
2910 | entry->c.text.write = snd_pcm_oss_proc_write; |
2911 | entry->private_data = pstr; | |
2912 | if (snd_info_register(entry) < 0) { | |
2913 | snd_info_free_entry(entry); | |
2914 | entry = NULL; | |
2915 | } | |
2916 | } | |
2917 | pstr->oss.proc_entry = entry; | |
2918 | } | |
2919 | } | |
2920 | ||
6ac77bc1 | 2921 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
1da177e4 LT |
2922 | { |
2923 | int stream; | |
2924 | for (stream = 0; stream < 2; ++stream) { | |
6ac77bc1 | 2925 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
746d4a02 TI |
2926 | snd_info_free_entry(pstr->oss.proc_entry); |
2927 | pstr->oss.proc_entry = NULL; | |
2928 | snd_pcm_oss_proc_free_setup_list(pstr); | |
1da177e4 LT |
2929 | } |
2930 | } | |
b7d90a35 | 2931 | #else /* !CONFIG_SND_VERBOSE_PROCFS */ |
04f141a8 TI |
2932 | #define snd_pcm_oss_proc_init(pcm) |
2933 | #define snd_pcm_oss_proc_done(pcm) | |
b7d90a35 | 2934 | #endif /* CONFIG_SND_VERBOSE_PROCFS */ |
1da177e4 LT |
2935 | |
2936 | /* | |
2937 | * ENTRY functions | |
2938 | */ | |
2939 | ||
9c2e08c5 | 2940 | static const struct file_operations snd_pcm_oss_f_reg = |
1da177e4 LT |
2941 | { |
2942 | .owner = THIS_MODULE, | |
2943 | .read = snd_pcm_oss_read, | |
2944 | .write = snd_pcm_oss_write, | |
2945 | .open = snd_pcm_oss_open, | |
2946 | .release = snd_pcm_oss_release, | |
2947 | .poll = snd_pcm_oss_poll, | |
2948 | .unlocked_ioctl = snd_pcm_oss_ioctl, | |
2949 | .compat_ioctl = snd_pcm_oss_ioctl_compat, | |
2950 | .mmap = snd_pcm_oss_mmap, | |
2951 | }; | |
2952 | ||
6ac77bc1 | 2953 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
1da177e4 LT |
2954 | { |
2955 | char name[128]; | |
2956 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); | |
2957 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2af677fc | 2958 | pcm->card, index, &snd_pcm_oss_f_reg, |
f87135f5 | 2959 | pcm, name) < 0) { |
d3d579f8 TI |
2960 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
2961 | pcm->card->number, pcm->device); | |
1da177e4 LT |
2962 | } |
2963 | } | |
2964 | ||
6ac77bc1 | 2965 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
1da177e4 LT |
2966 | { |
2967 | pcm->oss.reg = 0; | |
896e6cc2 | 2968 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
1da177e4 LT |
2969 | char name[128]; |
2970 | int duplex; | |
2971 | register_oss_dsp(pcm, 0); | |
2972 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && | |
2973 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && | |
2974 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); | |
2975 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); | |
2976 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO | |
2977 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, | |
2978 | pcm->card->number, | |
2979 | name); | |
2980 | #endif | |
2981 | pcm->oss.reg++; | |
2982 | pcm->oss.reg_mask |= 1; | |
2983 | } | |
896e6cc2 | 2984 | if (adsp_map[pcm->card->number] == (int)pcm->device) { |
1da177e4 LT |
2985 | register_oss_dsp(pcm, 1); |
2986 | pcm->oss.reg++; | |
2987 | pcm->oss.reg_mask |= 2; | |
2988 | } | |
2989 | ||
2990 | if (pcm->oss.reg) | |
2991 | snd_pcm_oss_proc_init(pcm); | |
2992 | ||
2993 | return 0; | |
2994 | } | |
2995 | ||
6ac77bc1 | 2996 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
1da177e4 LT |
2997 | { |
2998 | if (pcm->oss.reg) { | |
2999 | if (pcm->oss.reg_mask & 1) { | |
3000 | pcm->oss.reg_mask &= ~1; | |
3001 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
3002 | pcm->card, 0); | |
3003 | } | |
3004 | if (pcm->oss.reg_mask & 2) { | |
3005 | pcm->oss.reg_mask &= ~2; | |
3006 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
3007 | pcm->card, 1); | |
3008 | } | |
896e6cc2 | 3009 | if (dsp_map[pcm->card->number] == (int)pcm->device) { |
1da177e4 LT |
3010 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO |
3011 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); | |
3012 | #endif | |
3013 | } | |
3014 | pcm->oss.reg = 0; | |
1da177e4 LT |
3015 | } |
3016 | return 0; | |
3017 | } | |
3018 | ||
c461482c TI |
3019 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
3020 | { | |
3021 | snd_pcm_oss_disconnect_minor(pcm); | |
3022 | snd_pcm_oss_proc_done(pcm); | |
3023 | return 0; | |
3024 | } | |
3025 | ||
6ac77bc1 | 3026 | static struct snd_pcm_notify snd_pcm_oss_notify = |
1da177e4 LT |
3027 | { |
3028 | .n_register = snd_pcm_oss_register_minor, | |
3029 | .n_disconnect = snd_pcm_oss_disconnect_minor, | |
3030 | .n_unregister = snd_pcm_oss_unregister_minor, | |
3031 | }; | |
3032 | ||
3033 | static int __init alsa_pcm_oss_init(void) | |
3034 | { | |
3035 | int i; | |
3036 | int err; | |
3037 | ||
3038 | /* check device map table */ | |
3039 | for (i = 0; i < SNDRV_CARDS; i++) { | |
896e6cc2 | 3040 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { |
d3d579f8 TI |
3041 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
3042 | i, dsp_map[i]); | |
1da177e4 LT |
3043 | dsp_map[i] = 0; |
3044 | } | |
896e6cc2 | 3045 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { |
d3d579f8 TI |
3046 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
3047 | i, adsp_map[i]); | |
1da177e4 LT |
3048 | adsp_map[i] = 1; |
3049 | } | |
3050 | } | |
3051 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) | |
3052 | return err; | |
3053 | return 0; | |
3054 | } | |
3055 | ||
3056 | static void __exit alsa_pcm_oss_exit(void) | |
3057 | { | |
3058 | snd_pcm_notify(&snd_pcm_oss_notify, 1); | |
3059 | } | |
3060 | ||
3061 | module_init(alsa_pcm_oss_init) | |
3062 | module_exit(alsa_pcm_oss_exit) |