Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Digital Audio (PCM) abstract layer | |
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 | ||
1da177e4 | 22 | #include <linux/mm.h> |
1da177e4 LT |
23 | #include <linux/file.h> |
24 | #include <linux/slab.h> | |
25 | #include <linux/time.h> | |
9442e691 | 26 | #include <linux/latency.h> |
1da177e4 LT |
27 | #include <linux/uio.h> |
28 | #include <sound/core.h> | |
29 | #include <sound/control.h> | |
30 | #include <sound/info.h> | |
31 | #include <sound/pcm.h> | |
32 | #include <sound/pcm_params.h> | |
33 | #include <sound/timer.h> | |
34 | #include <sound/minors.h> | |
35 | #include <asm/io.h> | |
36 | ||
37 | /* | |
38 | * Compatibility | |
39 | */ | |
40 | ||
877211f5 | 41 | struct snd_pcm_hw_params_old { |
1da177e4 LT |
42 | unsigned int flags; |
43 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - | |
44 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; | |
877211f5 | 45 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
1da177e4 LT |
46 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS + 1]; |
47 | unsigned int rmask; | |
48 | unsigned int cmask; | |
49 | unsigned int info; | |
50 | unsigned int msbits; | |
51 | unsigned int rate_num; | |
52 | unsigned int rate_den; | |
877211f5 | 53 | snd_pcm_uframes_t fifo_size; |
1da177e4 LT |
54 | unsigned char reserved[64]; |
55 | }; | |
56 | ||
59d48582 | 57 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
877211f5 TI |
58 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
59 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) | |
1da177e4 | 60 | |
877211f5 TI |
61 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
62 | struct snd_pcm_hw_params_old __user * _oparams); | |
63 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, | |
64 | struct snd_pcm_hw_params_old __user * _oparams); | |
59d48582 | 65 | #endif |
f87135f5 | 66 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream); |
1da177e4 LT |
67 | |
68 | /* | |
69 | * | |
70 | */ | |
71 | ||
72 | DEFINE_RWLOCK(snd_pcm_link_rwlock); | |
e88e8ae6 | 73 | EXPORT_SYMBOL(snd_pcm_link_rwlock); |
1da177e4 | 74 | |
e88e8ae6 | 75 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
1da177e4 LT |
76 | |
77 | static inline mm_segment_t snd_enter_user(void) | |
78 | { | |
79 | mm_segment_t fs = get_fs(); | |
80 | set_fs(get_ds()); | |
81 | return fs; | |
82 | } | |
83 | ||
84 | static inline void snd_leave_user(mm_segment_t fs) | |
85 | { | |
86 | set_fs(fs); | |
87 | } | |
88 | ||
89 | ||
90 | ||
877211f5 | 91 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
1da177e4 | 92 | { |
877211f5 TI |
93 | struct snd_pcm_runtime *runtime; |
94 | struct snd_pcm *pcm = substream->pcm; | |
95 | struct snd_pcm_str *pstr = substream->pstr; | |
1da177e4 LT |
96 | |
97 | snd_assert(substream != NULL, return -ENXIO); | |
98 | memset(info, 0, sizeof(*info)); | |
99 | info->card = pcm->card->number; | |
100 | info->device = pcm->device; | |
101 | info->stream = substream->stream; | |
102 | info->subdevice = substream->number; | |
103 | strlcpy(info->id, pcm->id, sizeof(info->id)); | |
104 | strlcpy(info->name, pcm->name, sizeof(info->name)); | |
105 | info->dev_class = pcm->dev_class; | |
106 | info->dev_subclass = pcm->dev_subclass; | |
107 | info->subdevices_count = pstr->substream_count; | |
108 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; | |
109 | strlcpy(info->subname, substream->name, sizeof(info->subname)); | |
110 | runtime = substream->runtime; | |
111 | /* AB: FIXME!!! This is definitely nonsense */ | |
112 | if (runtime) { | |
113 | info->sync = runtime->sync; | |
114 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); | |
115 | } | |
116 | return 0; | |
117 | } | |
118 | ||
877211f5 TI |
119 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
120 | struct snd_pcm_info __user * _info) | |
1da177e4 | 121 | { |
877211f5 | 122 | struct snd_pcm_info *info; |
1da177e4 LT |
123 | int err; |
124 | ||
125 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
126 | if (! info) | |
127 | return -ENOMEM; | |
128 | err = snd_pcm_info(substream, info); | |
129 | if (err >= 0) { | |
130 | if (copy_to_user(_info, info, sizeof(*info))) | |
131 | err = -EFAULT; | |
132 | } | |
133 | kfree(info); | |
134 | return err; | |
135 | } | |
136 | ||
137 | #undef RULES_DEBUG | |
138 | ||
139 | #ifdef RULES_DEBUG | |
140 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v | |
141 | char *snd_pcm_hw_param_names[] = { | |
142 | HW_PARAM(ACCESS), | |
143 | HW_PARAM(FORMAT), | |
144 | HW_PARAM(SUBFORMAT), | |
145 | HW_PARAM(SAMPLE_BITS), | |
146 | HW_PARAM(FRAME_BITS), | |
147 | HW_PARAM(CHANNELS), | |
148 | HW_PARAM(RATE), | |
149 | HW_PARAM(PERIOD_TIME), | |
150 | HW_PARAM(PERIOD_SIZE), | |
151 | HW_PARAM(PERIOD_BYTES), | |
152 | HW_PARAM(PERIODS), | |
153 | HW_PARAM(BUFFER_TIME), | |
154 | HW_PARAM(BUFFER_SIZE), | |
155 | HW_PARAM(BUFFER_BYTES), | |
156 | HW_PARAM(TICK_TIME), | |
157 | }; | |
158 | #endif | |
159 | ||
877211f5 TI |
160 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
161 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
162 | { |
163 | unsigned int k; | |
877211f5 TI |
164 | struct snd_pcm_hardware *hw; |
165 | struct snd_interval *i = NULL; | |
166 | struct snd_mask *m = NULL; | |
167 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; | |
1da177e4 LT |
168 | unsigned int rstamps[constrs->rules_num]; |
169 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; | |
170 | unsigned int stamp = 2; | |
171 | int changed, again; | |
172 | ||
173 | params->info = 0; | |
174 | params->fifo_size = 0; | |
175 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) | |
176 | params->msbits = 0; | |
177 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { | |
178 | params->rate_num = 0; | |
179 | params->rate_den = 0; | |
180 | } | |
181 | ||
182 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
183 | m = hw_param_mask(params, k); | |
184 | if (snd_mask_empty(m)) | |
185 | return -EINVAL; | |
186 | if (!(params->rmask & (1 << k))) | |
187 | continue; | |
188 | #ifdef RULES_DEBUG | |
189 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
190 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
191 | #endif | |
192 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); | |
193 | #ifdef RULES_DEBUG | |
194 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
195 | #endif | |
196 | if (changed) | |
197 | params->cmask |= 1 << k; | |
198 | if (changed < 0) | |
199 | return changed; | |
200 | } | |
201 | ||
202 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
203 | i = hw_param_interval(params, k); | |
204 | if (snd_interval_empty(i)) | |
205 | return -EINVAL; | |
206 | if (!(params->rmask & (1 << k))) | |
207 | continue; | |
208 | #ifdef RULES_DEBUG | |
209 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
210 | if (i->empty) | |
211 | printk("empty"); | |
212 | else | |
213 | printk("%c%u %u%c", | |
214 | i->openmin ? '(' : '[', i->min, | |
215 | i->max, i->openmax ? ')' : ']'); | |
216 | printk(" -> "); | |
217 | #endif | |
218 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); | |
219 | #ifdef RULES_DEBUG | |
220 | if (i->empty) | |
221 | printk("empty\n"); | |
222 | else | |
223 | printk("%c%u %u%c\n", | |
224 | i->openmin ? '(' : '[', i->min, | |
225 | i->max, i->openmax ? ')' : ']'); | |
226 | #endif | |
227 | if (changed) | |
228 | params->cmask |= 1 << k; | |
229 | if (changed < 0) | |
230 | return changed; | |
231 | } | |
232 | ||
233 | for (k = 0; k < constrs->rules_num; k++) | |
234 | rstamps[k] = 0; | |
235 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) | |
236 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; | |
237 | do { | |
238 | again = 0; | |
239 | for (k = 0; k < constrs->rules_num; k++) { | |
877211f5 | 240 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
1da177e4 LT |
241 | unsigned int d; |
242 | int doit = 0; | |
243 | if (r->cond && !(r->cond & params->flags)) | |
244 | continue; | |
245 | for (d = 0; r->deps[d] >= 0; d++) { | |
246 | if (vstamps[r->deps[d]] > rstamps[k]) { | |
247 | doit = 1; | |
248 | break; | |
249 | } | |
250 | } | |
251 | if (!doit) | |
252 | continue; | |
253 | #ifdef RULES_DEBUG | |
254 | printk("Rule %d [%p]: ", k, r->func); | |
255 | if (r->var >= 0) { | |
256 | printk("%s = ", snd_pcm_hw_param_names[r->var]); | |
257 | if (hw_is_mask(r->var)) { | |
258 | m = hw_param_mask(params, r->var); | |
259 | printk("%x", *m->bits); | |
260 | } else { | |
261 | i = hw_param_interval(params, r->var); | |
262 | if (i->empty) | |
263 | printk("empty"); | |
264 | else | |
265 | printk("%c%u %u%c", | |
266 | i->openmin ? '(' : '[', i->min, | |
267 | i->max, i->openmax ? ')' : ']'); | |
268 | } | |
269 | } | |
270 | #endif | |
271 | changed = r->func(params, r); | |
272 | #ifdef RULES_DEBUG | |
273 | if (r->var >= 0) { | |
274 | printk(" -> "); | |
275 | if (hw_is_mask(r->var)) | |
276 | printk("%x", *m->bits); | |
277 | else { | |
278 | if (i->empty) | |
279 | printk("empty"); | |
280 | else | |
281 | printk("%c%u %u%c", | |
282 | i->openmin ? '(' : '[', i->min, | |
283 | i->max, i->openmax ? ')' : ']'); | |
284 | } | |
285 | } | |
286 | printk("\n"); | |
287 | #endif | |
288 | rstamps[k] = stamp; | |
289 | if (changed && r->var >= 0) { | |
290 | params->cmask |= (1 << r->var); | |
291 | vstamps[r->var] = stamp; | |
292 | again = 1; | |
293 | } | |
294 | if (changed < 0) | |
295 | return changed; | |
296 | stamp++; | |
297 | } | |
298 | } while (again); | |
299 | if (!params->msbits) { | |
300 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); | |
301 | if (snd_interval_single(i)) | |
302 | params->msbits = snd_interval_value(i); | |
303 | } | |
304 | ||
305 | if (!params->rate_den) { | |
306 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
307 | if (snd_interval_single(i)) { | |
308 | params->rate_num = snd_interval_value(i); | |
309 | params->rate_den = 1; | |
310 | } | |
311 | } | |
312 | ||
313 | hw = &substream->runtime->hw; | |
314 | if (!params->info) | |
315 | params->info = hw->info; | |
316 | if (!params->fifo_size) | |
317 | params->fifo_size = hw->fifo_size; | |
318 | params->rmask = 0; | |
319 | return 0; | |
320 | } | |
321 | ||
e88e8ae6 TI |
322 | EXPORT_SYMBOL(snd_pcm_hw_refine); |
323 | ||
877211f5 TI |
324 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
325 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 326 | { |
877211f5 | 327 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
328 | int err; |
329 | ||
330 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
331 | if (!params) { | |
332 | err = -ENOMEM; | |
333 | goto out; | |
334 | } | |
335 | if (copy_from_user(params, _params, sizeof(*params))) { | |
336 | err = -EFAULT; | |
337 | goto out; | |
338 | } | |
339 | err = snd_pcm_hw_refine(substream, params); | |
340 | if (copy_to_user(_params, params, sizeof(*params))) { | |
341 | if (!err) | |
342 | err = -EFAULT; | |
343 | } | |
344 | out: | |
345 | kfree(params); | |
346 | return err; | |
347 | } | |
348 | ||
9442e691 TI |
349 | static int period_to_usecs(struct snd_pcm_runtime *runtime) |
350 | { | |
351 | int usecs; | |
352 | ||
353 | if (! runtime->rate) | |
354 | return -1; /* invalid */ | |
355 | ||
356 | /* take 75% of period time as the deadline */ | |
357 | usecs = (750000 / runtime->rate) * runtime->period_size; | |
358 | usecs += ((750000 % runtime->rate) * runtime->period_size) / | |
359 | runtime->rate; | |
360 | ||
361 | return usecs; | |
362 | } | |
363 | ||
877211f5 TI |
364 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
365 | struct snd_pcm_hw_params *params) | |
1da177e4 | 366 | { |
877211f5 | 367 | struct snd_pcm_runtime *runtime; |
9442e691 | 368 | int err, usecs; |
1da177e4 LT |
369 | unsigned int bits; |
370 | snd_pcm_uframes_t frames; | |
371 | ||
372 | snd_assert(substream != NULL, return -ENXIO); | |
373 | runtime = substream->runtime; | |
374 | snd_assert(runtime != NULL, return -ENXIO); | |
375 | snd_pcm_stream_lock_irq(substream); | |
376 | switch (runtime->status->state) { | |
377 | case SNDRV_PCM_STATE_OPEN: | |
378 | case SNDRV_PCM_STATE_SETUP: | |
379 | case SNDRV_PCM_STATE_PREPARED: | |
380 | break; | |
381 | default: | |
382 | snd_pcm_stream_unlock_irq(substream); | |
383 | return -EBADFD; | |
384 | } | |
385 | snd_pcm_stream_unlock_irq(substream); | |
386 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
387 | if (!substream->oss.oss) | |
388 | #endif | |
9c323fcb | 389 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
390 | return -EBADFD; |
391 | ||
392 | params->rmask = ~0U; | |
393 | err = snd_pcm_hw_refine(substream, params); | |
394 | if (err < 0) | |
395 | goto _error; | |
396 | ||
397 | err = snd_pcm_hw_params_choose(substream, params); | |
398 | if (err < 0) | |
399 | goto _error; | |
400 | ||
401 | if (substream->ops->hw_params != NULL) { | |
402 | err = substream->ops->hw_params(substream, params); | |
403 | if (err < 0) | |
404 | goto _error; | |
405 | } | |
406 | ||
407 | runtime->access = params_access(params); | |
408 | runtime->format = params_format(params); | |
409 | runtime->subformat = params_subformat(params); | |
410 | runtime->channels = params_channels(params); | |
411 | runtime->rate = params_rate(params); | |
412 | runtime->period_size = params_period_size(params); | |
413 | runtime->periods = params_periods(params); | |
414 | runtime->buffer_size = params_buffer_size(params); | |
1da177e4 LT |
415 | runtime->info = params->info; |
416 | runtime->rate_num = params->rate_num; | |
417 | runtime->rate_den = params->rate_den; | |
418 | ||
419 | bits = snd_pcm_format_physical_width(runtime->format); | |
420 | runtime->sample_bits = bits; | |
421 | bits *= runtime->channels; | |
422 | runtime->frame_bits = bits; | |
423 | frames = 1; | |
424 | while (bits % 8 != 0) { | |
425 | bits *= 2; | |
426 | frames *= 2; | |
427 | } | |
428 | runtime->byte_align = bits / 8; | |
429 | runtime->min_align = frames; | |
430 | ||
431 | /* Default sw params */ | |
432 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
433 | runtime->period_step = 1; | |
1da177e4 | 434 | runtime->control->avail_min = runtime->period_size; |
1da177e4 LT |
435 | runtime->start_threshold = 1; |
436 | runtime->stop_threshold = runtime->buffer_size; | |
437 | runtime->silence_threshold = 0; | |
438 | runtime->silence_size = 0; | |
439 | runtime->boundary = runtime->buffer_size; | |
440 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
441 | runtime->boundary *= 2; | |
442 | ||
443 | snd_pcm_timer_resolution_change(substream); | |
444 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
9442e691 TI |
445 | |
446 | remove_acceptable_latency(substream->latency_id); | |
447 | if ((usecs = period_to_usecs(runtime)) >= 0) | |
448 | set_acceptable_latency(substream->latency_id, usecs); | |
1da177e4 LT |
449 | return 0; |
450 | _error: | |
451 | /* hardware might be unuseable from this time, | |
452 | so we force application to retry to set | |
453 | the correct hardware parameter settings */ | |
454 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
455 | if (substream->ops->hw_free != NULL) | |
456 | substream->ops->hw_free(substream); | |
457 | return err; | |
458 | } | |
459 | ||
877211f5 TI |
460 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
461 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 462 | { |
877211f5 | 463 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
464 | int err; |
465 | ||
466 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
467 | if (!params) { | |
468 | err = -ENOMEM; | |
469 | goto out; | |
470 | } | |
471 | if (copy_from_user(params, _params, sizeof(*params))) { | |
472 | err = -EFAULT; | |
473 | goto out; | |
474 | } | |
475 | err = snd_pcm_hw_params(substream, params); | |
476 | if (copy_to_user(_params, params, sizeof(*params))) { | |
477 | if (!err) | |
478 | err = -EFAULT; | |
479 | } | |
480 | out: | |
481 | kfree(params); | |
482 | return err; | |
483 | } | |
484 | ||
877211f5 | 485 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 486 | { |
877211f5 | 487 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
488 | int result = 0; |
489 | ||
490 | snd_assert(substream != NULL, return -ENXIO); | |
491 | runtime = substream->runtime; | |
492 | snd_assert(runtime != NULL, return -ENXIO); | |
493 | snd_pcm_stream_lock_irq(substream); | |
494 | switch (runtime->status->state) { | |
495 | case SNDRV_PCM_STATE_SETUP: | |
496 | case SNDRV_PCM_STATE_PREPARED: | |
497 | break; | |
498 | default: | |
499 | snd_pcm_stream_unlock_irq(substream); | |
500 | return -EBADFD; | |
501 | } | |
502 | snd_pcm_stream_unlock_irq(substream); | |
9c323fcb | 503 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
504 | return -EBADFD; |
505 | if (substream->ops->hw_free) | |
506 | result = substream->ops->hw_free(substream); | |
507 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
9442e691 | 508 | remove_acceptable_latency(substream->latency_id); |
1da177e4 LT |
509 | return result; |
510 | } | |
511 | ||
877211f5 TI |
512 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
513 | struct snd_pcm_sw_params *params) | |
1da177e4 | 514 | { |
877211f5 | 515 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
516 | |
517 | snd_assert(substream != NULL, return -ENXIO); | |
518 | runtime = substream->runtime; | |
519 | snd_assert(runtime != NULL, return -ENXIO); | |
520 | snd_pcm_stream_lock_irq(substream); | |
521 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
522 | snd_pcm_stream_unlock_irq(substream); | |
523 | return -EBADFD; | |
524 | } | |
525 | snd_pcm_stream_unlock_irq(substream); | |
526 | ||
527 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
528 | return -EINVAL; | |
529 | if (params->avail_min == 0) | |
530 | return -EINVAL; | |
1da177e4 LT |
531 | if (params->silence_size >= runtime->boundary) { |
532 | if (params->silence_threshold != 0) | |
533 | return -EINVAL; | |
534 | } else { | |
535 | if (params->silence_size > params->silence_threshold) | |
536 | return -EINVAL; | |
537 | if (params->silence_threshold > runtime->buffer_size) | |
538 | return -EINVAL; | |
539 | } | |
540 | snd_pcm_stream_lock_irq(substream); | |
541 | runtime->tstamp_mode = params->tstamp_mode; | |
1da177e4 LT |
542 | runtime->period_step = params->period_step; |
543 | runtime->control->avail_min = params->avail_min; | |
544 | runtime->start_threshold = params->start_threshold; | |
545 | runtime->stop_threshold = params->stop_threshold; | |
546 | runtime->silence_threshold = params->silence_threshold; | |
547 | runtime->silence_size = params->silence_size; | |
1da177e4 LT |
548 | params->boundary = runtime->boundary; |
549 | if (snd_pcm_running(substream)) { | |
1da177e4 LT |
550 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
551 | runtime->silence_size > 0) | |
552 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
553 | wake_up(&runtime->sleep); | |
554 | } | |
555 | snd_pcm_stream_unlock_irq(substream); | |
556 | return 0; | |
557 | } | |
558 | ||
877211f5 TI |
559 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
560 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 561 | { |
877211f5 | 562 | struct snd_pcm_sw_params params; |
1da177e4 LT |
563 | int err; |
564 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
565 | return -EFAULT; | |
566 | err = snd_pcm_sw_params(substream, ¶ms); | |
567 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
568 | return -EFAULT; | |
569 | return err; | |
570 | } | |
571 | ||
877211f5 TI |
572 | int snd_pcm_status(struct snd_pcm_substream *substream, |
573 | struct snd_pcm_status *status) | |
1da177e4 | 574 | { |
877211f5 | 575 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
576 | |
577 | snd_pcm_stream_lock_irq(substream); | |
578 | status->state = runtime->status->state; | |
579 | status->suspended_state = runtime->status->suspended_state; | |
580 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
581 | goto _end; | |
582 | status->trigger_tstamp = runtime->trigger_tstamp; | |
a713b583 | 583 | if (snd_pcm_running(substream)) |
1da177e4 | 584 | snd_pcm_update_hw_ptr(substream); |
a713b583 | 585 | snd_pcm_gettime(runtime, &status->tstamp); |
1da177e4 LT |
586 | status->appl_ptr = runtime->control->appl_ptr; |
587 | status->hw_ptr = runtime->status->hw_ptr; | |
588 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
589 | status->avail = snd_pcm_playback_avail(runtime); | |
590 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
591 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
592 | status->delay = runtime->buffer_size - status->avail; | |
593 | else | |
594 | status->delay = 0; | |
595 | } else { | |
596 | status->avail = snd_pcm_capture_avail(runtime); | |
597 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
598 | status->delay = status->avail; | |
599 | else | |
600 | status->delay = 0; | |
601 | } | |
602 | status->avail_max = runtime->avail_max; | |
603 | status->overrange = runtime->overrange; | |
604 | runtime->avail_max = 0; | |
605 | runtime->overrange = 0; | |
606 | _end: | |
607 | snd_pcm_stream_unlock_irq(substream); | |
608 | return 0; | |
609 | } | |
610 | ||
877211f5 TI |
611 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
612 | struct snd_pcm_status __user * _status) | |
1da177e4 | 613 | { |
877211f5 TI |
614 | struct snd_pcm_status status; |
615 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
616 | int res; |
617 | ||
618 | snd_assert(substream != NULL, return -ENXIO); | |
619 | runtime = substream->runtime; | |
620 | memset(&status, 0, sizeof(status)); | |
621 | res = snd_pcm_status(substream, &status); | |
622 | if (res < 0) | |
623 | return res; | |
624 | if (copy_to_user(_status, &status, sizeof(status))) | |
625 | return -EFAULT; | |
626 | return 0; | |
627 | } | |
628 | ||
877211f5 TI |
629 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
630 | struct snd_pcm_channel_info * info) | |
1da177e4 | 631 | { |
877211f5 | 632 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
633 | unsigned int channel; |
634 | ||
635 | snd_assert(substream != NULL, return -ENXIO); | |
636 | channel = info->channel; | |
637 | runtime = substream->runtime; | |
638 | snd_pcm_stream_lock_irq(substream); | |
639 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
640 | snd_pcm_stream_unlock_irq(substream); | |
641 | return -EBADFD; | |
642 | } | |
643 | snd_pcm_stream_unlock_irq(substream); | |
644 | if (channel >= runtime->channels) | |
645 | return -EINVAL; | |
646 | memset(info, 0, sizeof(*info)); | |
647 | info->channel = channel; | |
648 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
649 | } | |
650 | ||
877211f5 TI |
651 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
652 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 653 | { |
877211f5 | 654 | struct snd_pcm_channel_info info; |
1da177e4 LT |
655 | int res; |
656 | ||
657 | if (copy_from_user(&info, _info, sizeof(info))) | |
658 | return -EFAULT; | |
659 | res = snd_pcm_channel_info(substream, &info); | |
660 | if (res < 0) | |
661 | return res; | |
662 | if (copy_to_user(_info, &info, sizeof(info))) | |
663 | return -EFAULT; | |
664 | return 0; | |
665 | } | |
666 | ||
877211f5 | 667 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 668 | { |
877211f5 | 669 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
670 | if (runtime->trigger_master == NULL) |
671 | return; | |
672 | if (runtime->trigger_master == substream) { | |
b751eef1 | 673 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); |
1da177e4 LT |
674 | } else { |
675 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
676 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
677 | } | |
678 | runtime->trigger_master = NULL; | |
679 | } | |
680 | ||
681 | struct action_ops { | |
877211f5 TI |
682 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
683 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
684 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
685 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
686 | }; |
687 | ||
688 | /* | |
689 | * this functions is core for handling of linked stream | |
690 | * Note: the stream state might be changed also on failure | |
691 | * Note2: call with calling stream lock + link lock | |
692 | */ | |
693 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 694 | struct snd_pcm_substream *substream, |
1da177e4 LT |
695 | int state, int do_lock) |
696 | { | |
877211f5 TI |
697 | struct snd_pcm_substream *s = NULL; |
698 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
699 | int res = 0; |
700 | ||
ef991b95 | 701 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 702 | if (do_lock && s != substream) |
208eee2a FD |
703 | spin_lock_nested(&s->self_group.lock, |
704 | SINGLE_DEPTH_NESTING); | |
1da177e4 LT |
705 | res = ops->pre_action(s, state); |
706 | if (res < 0) | |
707 | goto _unlock; | |
708 | } | |
ef991b95 | 709 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
710 | res = ops->do_action(s, state); |
711 | if (res < 0) { | |
712 | if (ops->undo_action) { | |
ef991b95 | 713 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
714 | if (s1 == s) /* failed stream */ |
715 | break; | |
716 | ops->undo_action(s1, state); | |
717 | } | |
718 | } | |
719 | s = NULL; /* unlock all */ | |
720 | goto _unlock; | |
721 | } | |
722 | } | |
ef991b95 | 723 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
724 | ops->post_action(s, state); |
725 | } | |
726 | _unlock: | |
727 | if (do_lock) { | |
728 | /* unlock streams */ | |
ef991b95 | 729 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
730 | if (s1 != substream) |
731 | spin_unlock(&s1->self_group.lock); | |
732 | if (s1 == s) /* end */ | |
733 | break; | |
734 | } | |
735 | } | |
736 | return res; | |
737 | } | |
738 | ||
739 | /* | |
740 | * Note: call with stream lock | |
741 | */ | |
742 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 743 | struct snd_pcm_substream *substream, |
1da177e4 LT |
744 | int state) |
745 | { | |
746 | int res; | |
747 | ||
748 | res = ops->pre_action(substream, state); | |
749 | if (res < 0) | |
750 | return res; | |
751 | res = ops->do_action(substream, state); | |
752 | if (res == 0) | |
753 | ops->post_action(substream, state); | |
754 | else if (ops->undo_action) | |
755 | ops->undo_action(substream, state); | |
756 | return res; | |
757 | } | |
758 | ||
759 | /* | |
760 | * Note: call with stream lock | |
761 | */ | |
762 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 763 | struct snd_pcm_substream *substream, |
1da177e4 LT |
764 | int state) |
765 | { | |
766 | int res; | |
767 | ||
768 | if (snd_pcm_stream_linked(substream)) { | |
769 | if (!spin_trylock(&substream->group->lock)) { | |
770 | spin_unlock(&substream->self_group.lock); | |
771 | spin_lock(&substream->group->lock); | |
772 | spin_lock(&substream->self_group.lock); | |
773 | } | |
774 | res = snd_pcm_action_group(ops, substream, state, 1); | |
775 | spin_unlock(&substream->group->lock); | |
776 | } else { | |
777 | res = snd_pcm_action_single(ops, substream, state); | |
778 | } | |
779 | return res; | |
780 | } | |
781 | ||
782 | /* | |
783 | * Note: don't use any locks before | |
784 | */ | |
785 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 786 | struct snd_pcm_substream *substream, |
1da177e4 LT |
787 | int state) |
788 | { | |
789 | int res; | |
790 | ||
791 | read_lock_irq(&snd_pcm_link_rwlock); | |
792 | if (snd_pcm_stream_linked(substream)) { | |
793 | spin_lock(&substream->group->lock); | |
794 | spin_lock(&substream->self_group.lock); | |
795 | res = snd_pcm_action_group(ops, substream, state, 1); | |
796 | spin_unlock(&substream->self_group.lock); | |
797 | spin_unlock(&substream->group->lock); | |
798 | } else { | |
799 | spin_lock(&substream->self_group.lock); | |
800 | res = snd_pcm_action_single(ops, substream, state); | |
801 | spin_unlock(&substream->self_group.lock); | |
802 | } | |
803 | read_unlock_irq(&snd_pcm_link_rwlock); | |
804 | return res; | |
805 | } | |
806 | ||
807 | /* | |
808 | */ | |
809 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 810 | struct snd_pcm_substream *substream, |
1da177e4 LT |
811 | int state) |
812 | { | |
813 | int res; | |
814 | ||
815 | down_read(&snd_pcm_link_rwsem); | |
816 | if (snd_pcm_stream_linked(substream)) | |
817 | res = snd_pcm_action_group(ops, substream, state, 0); | |
818 | else | |
819 | res = snd_pcm_action_single(ops, substream, state); | |
820 | up_read(&snd_pcm_link_rwsem); | |
821 | return res; | |
822 | } | |
823 | ||
824 | /* | |
825 | * start callbacks | |
826 | */ | |
877211f5 | 827 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 828 | { |
877211f5 | 829 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
830 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
831 | return -EBADFD; | |
832 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
833 | !snd_pcm_playback_data(substream)) | |
834 | return -EPIPE; | |
835 | runtime->trigger_master = substream; | |
836 | return 0; | |
837 | } | |
838 | ||
877211f5 | 839 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
840 | { |
841 | if (substream->runtime->trigger_master != substream) | |
842 | return 0; | |
843 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
844 | } | |
845 | ||
877211f5 | 846 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
847 | { |
848 | if (substream->runtime->trigger_master == substream) | |
849 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
850 | } | |
851 | ||
877211f5 | 852 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 853 | { |
877211f5 | 854 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
855 | snd_pcm_trigger_tstamp(substream); |
856 | runtime->status->state = state; | |
857 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
858 | runtime->silence_size > 0) | |
859 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1da177e4 | 860 | if (substream->timer) |
877211f5 TI |
861 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
862 | &runtime->trigger_tstamp); | |
1da177e4 LT |
863 | } |
864 | ||
865 | static struct action_ops snd_pcm_action_start = { | |
866 | .pre_action = snd_pcm_pre_start, | |
867 | .do_action = snd_pcm_do_start, | |
868 | .undo_action = snd_pcm_undo_start, | |
869 | .post_action = snd_pcm_post_start | |
870 | }; | |
871 | ||
872 | /** | |
873 | * snd_pcm_start | |
df8db936 | 874 | * @substream: the PCM substream instance |
1da177e4 LT |
875 | * |
876 | * Start all linked streams. | |
877 | */ | |
877211f5 | 878 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 879 | { |
877211f5 TI |
880 | return snd_pcm_action(&snd_pcm_action_start, substream, |
881 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
882 | } |
883 | ||
884 | /* | |
885 | * stop callbacks | |
886 | */ | |
877211f5 | 887 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 888 | { |
877211f5 | 889 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
890 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
891 | return -EBADFD; | |
892 | runtime->trigger_master = substream; | |
893 | return 0; | |
894 | } | |
895 | ||
877211f5 | 896 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
897 | { |
898 | if (substream->runtime->trigger_master == substream && | |
899 | snd_pcm_running(substream)) | |
900 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
901 | return 0; /* unconditonally stop all substreams */ | |
902 | } | |
903 | ||
877211f5 | 904 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 905 | { |
877211f5 | 906 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
907 | if (runtime->status->state != state) { |
908 | snd_pcm_trigger_tstamp(substream); | |
909 | if (substream->timer) | |
877211f5 TI |
910 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
911 | &runtime->trigger_tstamp); | |
1da177e4 | 912 | runtime->status->state = state; |
1da177e4 LT |
913 | } |
914 | wake_up(&runtime->sleep); | |
915 | } | |
916 | ||
917 | static struct action_ops snd_pcm_action_stop = { | |
918 | .pre_action = snd_pcm_pre_stop, | |
919 | .do_action = snd_pcm_do_stop, | |
920 | .post_action = snd_pcm_post_stop | |
921 | }; | |
922 | ||
923 | /** | |
924 | * snd_pcm_stop | |
df8db936 TI |
925 | * @substream: the PCM substream instance |
926 | * @state: PCM state after stopping the stream | |
1da177e4 LT |
927 | * |
928 | * Try to stop all running streams in the substream group. | |
929 | * The state of each stream is changed to the given value after that unconditionally. | |
930 | */ | |
877211f5 | 931 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
932 | { |
933 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
934 | } | |
935 | ||
e88e8ae6 TI |
936 | EXPORT_SYMBOL(snd_pcm_stop); |
937 | ||
1da177e4 LT |
938 | /** |
939 | * snd_pcm_drain_done | |
df8db936 | 940 | * @substream: the PCM substream |
1da177e4 LT |
941 | * |
942 | * Stop the DMA only when the given stream is playback. | |
943 | * The state is changed to SETUP. | |
944 | * Unlike snd_pcm_stop(), this affects only the given stream. | |
945 | */ | |
877211f5 | 946 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 947 | { |
877211f5 TI |
948 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
949 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
950 | } |
951 | ||
952 | /* | |
953 | * pause callbacks | |
954 | */ | |
877211f5 | 955 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 956 | { |
877211f5 | 957 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
958 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
959 | return -ENOSYS; | |
960 | if (push) { | |
961 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
962 | return -EBADFD; | |
963 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
964 | return -EBADFD; | |
965 | runtime->trigger_master = substream; | |
966 | return 0; | |
967 | } | |
968 | ||
877211f5 | 969 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
970 | { |
971 | if (substream->runtime->trigger_master != substream) | |
972 | return 0; | |
973 | return substream->ops->trigger(substream, | |
974 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
975 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
976 | } | |
977 | ||
877211f5 | 978 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
979 | { |
980 | if (substream->runtime->trigger_master == substream) | |
981 | substream->ops->trigger(substream, | |
982 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
983 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
984 | } | |
985 | ||
877211f5 | 986 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 987 | { |
877211f5 | 988 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
989 | snd_pcm_trigger_tstamp(substream); |
990 | if (push) { | |
991 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
992 | if (substream->timer) | |
877211f5 TI |
993 | snd_timer_notify(substream->timer, |
994 | SNDRV_TIMER_EVENT_MPAUSE, | |
995 | &runtime->trigger_tstamp); | |
1da177e4 LT |
996 | wake_up(&runtime->sleep); |
997 | } else { | |
998 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1da177e4 | 999 | if (substream->timer) |
877211f5 TI |
1000 | snd_timer_notify(substream->timer, |
1001 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1002 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1003 | } |
1004 | } | |
1005 | ||
1006 | static struct action_ops snd_pcm_action_pause = { | |
1007 | .pre_action = snd_pcm_pre_pause, | |
1008 | .do_action = snd_pcm_do_pause, | |
1009 | .undo_action = snd_pcm_undo_pause, | |
1010 | .post_action = snd_pcm_post_pause | |
1011 | }; | |
1012 | ||
1013 | /* | |
1014 | * Push/release the pause for all linked streams. | |
1015 | */ | |
877211f5 | 1016 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1017 | { |
1018 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1019 | } | |
1020 | ||
1021 | #ifdef CONFIG_PM | |
1022 | /* suspend */ | |
1023 | ||
877211f5 | 1024 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1025 | { |
877211f5 | 1026 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1027 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1028 | return -EBUSY; | |
1029 | runtime->trigger_master = substream; | |
1030 | return 0; | |
1031 | } | |
1032 | ||
877211f5 | 1033 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1034 | { |
877211f5 | 1035 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1036 | if (runtime->trigger_master != substream) |
1037 | return 0; | |
1038 | if (! snd_pcm_running(substream)) | |
1039 | return 0; | |
1040 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1041 | return 0; /* suspend unconditionally */ | |
1042 | } | |
1043 | ||
877211f5 | 1044 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1045 | { |
877211f5 | 1046 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1047 | snd_pcm_trigger_tstamp(substream); |
1048 | if (substream->timer) | |
877211f5 TI |
1049 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1050 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1051 | runtime->status->suspended_state = runtime->status->state; |
1052 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1da177e4 LT |
1053 | wake_up(&runtime->sleep); |
1054 | } | |
1055 | ||
1056 | static struct action_ops snd_pcm_action_suspend = { | |
1057 | .pre_action = snd_pcm_pre_suspend, | |
1058 | .do_action = snd_pcm_do_suspend, | |
1059 | .post_action = snd_pcm_post_suspend | |
1060 | }; | |
1061 | ||
1062 | /** | |
1063 | * snd_pcm_suspend | |
df8db936 | 1064 | * @substream: the PCM substream |
1da177e4 LT |
1065 | * |
1066 | * Trigger SUSPEND to all linked streams. | |
1067 | * After this call, all streams are changed to SUSPENDED state. | |
1068 | */ | |
877211f5 | 1069 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1070 | { |
1071 | int err; | |
1072 | unsigned long flags; | |
1073 | ||
603bf524 TI |
1074 | if (! substream) |
1075 | return 0; | |
1076 | ||
1da177e4 LT |
1077 | snd_pcm_stream_lock_irqsave(substream, flags); |
1078 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1079 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1080 | return err; | |
1081 | } | |
1082 | ||
e88e8ae6 TI |
1083 | EXPORT_SYMBOL(snd_pcm_suspend); |
1084 | ||
1da177e4 LT |
1085 | /** |
1086 | * snd_pcm_suspend_all | |
df8db936 | 1087 | * @pcm: the PCM instance |
1da177e4 LT |
1088 | * |
1089 | * Trigger SUSPEND to all substreams in the given pcm. | |
1090 | * After this call, all streams are changed to SUSPENDED state. | |
1091 | */ | |
877211f5 | 1092 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1093 | { |
877211f5 | 1094 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1095 | int stream, err = 0; |
1096 | ||
603bf524 TI |
1097 | if (! pcm) |
1098 | return 0; | |
1099 | ||
1da177e4 | 1100 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1101 | for (substream = pcm->streams[stream].substream; |
1102 | substream; substream = substream->next) { | |
1da177e4 LT |
1103 | /* FIXME: the open/close code should lock this as well */ |
1104 | if (substream->runtime == NULL) | |
1105 | continue; | |
1106 | err = snd_pcm_suspend(substream); | |
1107 | if (err < 0 && err != -EBUSY) | |
1108 | return err; | |
1109 | } | |
1110 | } | |
1111 | return 0; | |
1112 | } | |
1113 | ||
e88e8ae6 TI |
1114 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1115 | ||
1da177e4 LT |
1116 | /* resume */ |
1117 | ||
877211f5 | 1118 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1119 | { |
877211f5 | 1120 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1121 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1122 | return -ENOSYS; | |
1123 | runtime->trigger_master = substream; | |
1124 | return 0; | |
1125 | } | |
1126 | ||
877211f5 | 1127 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1128 | { |
877211f5 | 1129 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1130 | if (runtime->trigger_master != substream) |
1131 | return 0; | |
1132 | /* DMA not running previously? */ | |
1133 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1134 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1135 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1136 | return 0; | |
1137 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1138 | } | |
1139 | ||
877211f5 | 1140 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1141 | { |
1142 | if (substream->runtime->trigger_master == substream && | |
1143 | snd_pcm_running(substream)) | |
1144 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1145 | } | |
1146 | ||
877211f5 | 1147 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1148 | { |
877211f5 | 1149 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1150 | snd_pcm_trigger_tstamp(substream); |
1151 | if (substream->timer) | |
877211f5 TI |
1152 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1153 | &runtime->trigger_tstamp); | |
1da177e4 | 1154 | runtime->status->state = runtime->status->suspended_state; |
1da177e4 LT |
1155 | } |
1156 | ||
1157 | static struct action_ops snd_pcm_action_resume = { | |
1158 | .pre_action = snd_pcm_pre_resume, | |
1159 | .do_action = snd_pcm_do_resume, | |
1160 | .undo_action = snd_pcm_undo_resume, | |
1161 | .post_action = snd_pcm_post_resume | |
1162 | }; | |
1163 | ||
877211f5 | 1164 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1165 | { |
877211f5 | 1166 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1167 | int res; |
1168 | ||
1169 | snd_power_lock(card); | |
cbac4b0c | 1170 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1171 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1172 | snd_power_unlock(card); | |
1173 | return res; | |
1174 | } | |
1175 | ||
1176 | #else | |
1177 | ||
877211f5 | 1178 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1179 | { |
1180 | return -ENOSYS; | |
1181 | } | |
1182 | ||
1183 | #endif /* CONFIG_PM */ | |
1184 | ||
1185 | /* | |
1186 | * xrun ioctl | |
1187 | * | |
1188 | * Change the RUNNING stream(s) to XRUN state. | |
1189 | */ | |
877211f5 | 1190 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1191 | { |
877211f5 TI |
1192 | struct snd_card *card = substream->pcm->card; |
1193 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1194 | int result; |
1195 | ||
1196 | snd_power_lock(card); | |
1197 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1198 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1199 | if (result < 0) |
1200 | goto _unlock; | |
1201 | } | |
1202 | ||
1203 | snd_pcm_stream_lock_irq(substream); | |
1204 | switch (runtime->status->state) { | |
1205 | case SNDRV_PCM_STATE_XRUN: | |
1206 | result = 0; /* already there */ | |
1207 | break; | |
1208 | case SNDRV_PCM_STATE_RUNNING: | |
1209 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1210 | break; | |
1211 | default: | |
1212 | result = -EBADFD; | |
1213 | } | |
1214 | snd_pcm_stream_unlock_irq(substream); | |
1215 | _unlock: | |
1216 | snd_power_unlock(card); | |
1217 | return result; | |
1218 | } | |
1219 | ||
1220 | /* | |
1221 | * reset ioctl | |
1222 | */ | |
877211f5 | 1223 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1224 | { |
877211f5 | 1225 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1226 | switch (runtime->status->state) { |
1227 | case SNDRV_PCM_STATE_RUNNING: | |
1228 | case SNDRV_PCM_STATE_PREPARED: | |
1229 | case SNDRV_PCM_STATE_PAUSED: | |
1230 | case SNDRV_PCM_STATE_SUSPENDED: | |
1231 | return 0; | |
1232 | default: | |
1233 | return -EBADFD; | |
1234 | } | |
1235 | } | |
1236 | ||
877211f5 | 1237 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1238 | { |
877211f5 | 1239 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1240 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1241 | if (err < 0) | |
1242 | return err; | |
1243 | // snd_assert(runtime->status->hw_ptr < runtime->buffer_size, ); | |
1244 | runtime->hw_ptr_base = 0; | |
877211f5 TI |
1245 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1246 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1247 | runtime->silence_start = runtime->status->hw_ptr; |
1248 | runtime->silence_filled = 0; | |
1249 | return 0; | |
1250 | } | |
1251 | ||
877211f5 | 1252 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1253 | { |
877211f5 | 1254 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1255 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1256 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1257 | runtime->silence_size > 0) | |
1258 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1259 | } | |
1260 | ||
1261 | static struct action_ops snd_pcm_action_reset = { | |
1262 | .pre_action = snd_pcm_pre_reset, | |
1263 | .do_action = snd_pcm_do_reset, | |
1264 | .post_action = snd_pcm_post_reset | |
1265 | }; | |
1266 | ||
877211f5 | 1267 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1268 | { |
1269 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1270 | } | |
1271 | ||
1272 | /* | |
1273 | * prepare ioctl | |
1274 | */ | |
0df63e44 TI |
1275 | /* we use the second argument for updating f_flags */ |
1276 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, | |
1277 | int f_flags) | |
1da177e4 | 1278 | { |
877211f5 | 1279 | struct snd_pcm_runtime *runtime = substream->runtime; |
de1b8b93 TI |
1280 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1281 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1282 | return -EBADFD; |
1283 | if (snd_pcm_running(substream)) | |
1284 | return -EBUSY; | |
0df63e44 | 1285 | substream->f_flags = f_flags; |
1da177e4 LT |
1286 | return 0; |
1287 | } | |
1288 | ||
877211f5 | 1289 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1290 | { |
1291 | int err; | |
1292 | err = substream->ops->prepare(substream); | |
1293 | if (err < 0) | |
1294 | return err; | |
1295 | return snd_pcm_do_reset(substream, 0); | |
1296 | } | |
1297 | ||
877211f5 | 1298 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1299 | { |
877211f5 | 1300 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1301 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1302 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1303 | } | |
1304 | ||
1305 | static struct action_ops snd_pcm_action_prepare = { | |
1306 | .pre_action = snd_pcm_pre_prepare, | |
1307 | .do_action = snd_pcm_do_prepare, | |
1308 | .post_action = snd_pcm_post_prepare | |
1309 | }; | |
1310 | ||
1311 | /** | |
1312 | * snd_pcm_prepare | |
df8db936 | 1313 | * @substream: the PCM substream instance |
0df63e44 | 1314 | * @file: file to refer f_flags |
df8db936 TI |
1315 | * |
1316 | * Prepare the PCM substream to be triggerable. | |
1da177e4 | 1317 | */ |
0df63e44 TI |
1318 | static int snd_pcm_prepare(struct snd_pcm_substream *substream, |
1319 | struct file *file) | |
1da177e4 LT |
1320 | { |
1321 | int res; | |
877211f5 | 1322 | struct snd_card *card = substream->pcm->card; |
0df63e44 TI |
1323 | int f_flags; |
1324 | ||
1325 | if (file) | |
1326 | f_flags = file->f_flags; | |
1327 | else | |
1328 | f_flags = substream->f_flags; | |
1da177e4 LT |
1329 | |
1330 | snd_power_lock(card); | |
cbac4b0c | 1331 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
0df63e44 TI |
1332 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, |
1333 | substream, f_flags); | |
1da177e4 LT |
1334 | snd_power_unlock(card); |
1335 | return res; | |
1336 | } | |
1337 | ||
1338 | /* | |
1339 | * drain ioctl | |
1340 | */ | |
1341 | ||
877211f5 | 1342 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1343 | { |
0df63e44 | 1344 | if (substream->f_flags & O_NONBLOCK) |
1da177e4 LT |
1345 | return -EAGAIN; |
1346 | substream->runtime->trigger_master = substream; | |
1347 | return 0; | |
1348 | } | |
1349 | ||
877211f5 | 1350 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1351 | { |
877211f5 | 1352 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1353 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1354 | switch (runtime->status->state) { | |
1355 | case SNDRV_PCM_STATE_PREPARED: | |
1356 | /* start playback stream if possible */ | |
1357 | if (! snd_pcm_playback_empty(substream)) { | |
1358 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1359 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1360 | } | |
1361 | break; | |
1362 | case SNDRV_PCM_STATE_RUNNING: | |
1363 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1364 | break; | |
1365 | default: | |
1366 | break; | |
1367 | } | |
1368 | } else { | |
1369 | /* stop running stream */ | |
1370 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
b05e5787 | 1371 | int new_state = snd_pcm_capture_avail(runtime) > 0 ? |
1da177e4 | 1372 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; |
b05e5787 MÅš |
1373 | snd_pcm_do_stop(substream, new_state); |
1374 | snd_pcm_post_stop(substream, new_state); | |
1da177e4 LT |
1375 | } |
1376 | } | |
1377 | return 0; | |
1378 | } | |
1379 | ||
877211f5 | 1380 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1381 | { |
1382 | } | |
1383 | ||
1384 | static struct action_ops snd_pcm_action_drain_init = { | |
1385 | .pre_action = snd_pcm_pre_drain_init, | |
1386 | .do_action = snd_pcm_do_drain_init, | |
1387 | .post_action = snd_pcm_post_drain_init | |
1388 | }; | |
1389 | ||
1390 | struct drain_rec { | |
877211f5 | 1391 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1392 | wait_queue_t wait; |
1393 | snd_pcm_uframes_t stop_threshold; | |
1394 | }; | |
1395 | ||
877211f5 | 1396 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1397 | |
1398 | /* | |
1399 | * Drain the stream(s). | |
1400 | * When the substream is linked, sync until the draining of all playback streams | |
1401 | * is finished. | |
1402 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1403 | * (capture only) state. | |
1404 | */ | |
877211f5 | 1405 | static int snd_pcm_drain(struct snd_pcm_substream *substream) |
1da177e4 | 1406 | { |
877211f5 TI |
1407 | struct snd_card *card; |
1408 | struct snd_pcm_runtime *runtime; | |
ef991b95 | 1409 | struct snd_pcm_substream *s; |
1da177e4 LT |
1410 | int result = 0; |
1411 | int i, num_drecs; | |
1412 | struct drain_rec *drec, drec_tmp, *d; | |
1413 | ||
1414 | snd_assert(substream != NULL, return -ENXIO); | |
1415 | card = substream->pcm->card; | |
1416 | runtime = substream->runtime; | |
1417 | ||
1418 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1419 | return -EBADFD; | |
1420 | ||
1da177e4 LT |
1421 | snd_power_lock(card); |
1422 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1423 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1424 | if (result < 0) { |
1425 | snd_power_unlock(card); | |
1426 | return result; | |
1427 | } | |
1da177e4 LT |
1428 | } |
1429 | ||
1430 | /* allocate temporary record for drain sync */ | |
21cb2a2e | 1431 | down_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1432 | if (snd_pcm_stream_linked(substream)) { |
1433 | drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL); | |
1434 | if (! drec) { | |
21cb2a2e TI |
1435 | up_read(&snd_pcm_link_rwsem); |
1436 | snd_power_unlock(card); | |
1437 | return -ENOMEM; | |
1da177e4 LT |
1438 | } |
1439 | } else | |
1440 | drec = &drec_tmp; | |
1441 | ||
21cb2a2e | 1442 | /* count only playback streams */ |
1da177e4 | 1443 | num_drecs = 0; |
ef991b95 | 1444 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 1445 | runtime = s->runtime; |
1da177e4 LT |
1446 | if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1447 | d = &drec[num_drecs++]; | |
1448 | d->substream = s; | |
1449 | init_waitqueue_entry(&d->wait, current); | |
1450 | add_wait_queue(&runtime->sleep, &d->wait); | |
1451 | /* stop_threshold fixup to avoid endless loop when | |
1452 | * stop_threshold > buffer_size | |
1453 | */ | |
1454 | d->stop_threshold = runtime->stop_threshold; | |
1455 | if (runtime->stop_threshold > runtime->buffer_size) | |
1456 | runtime->stop_threshold = runtime->buffer_size; | |
1457 | } | |
1458 | } | |
21cb2a2e | 1459 | up_read(&snd_pcm_link_rwsem); |
21cb2a2e TI |
1460 | |
1461 | snd_pcm_stream_lock_irq(substream); | |
1462 | /* resume pause */ | |
1a7fa543 | 1463 | if (substream->runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
21cb2a2e TI |
1464 | snd_pcm_pause(substream, 0); |
1465 | ||
1466 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1467 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
1468 | if (result < 0) { | |
1469 | snd_pcm_stream_unlock_irq(substream); | |
1470 | goto _error; | |
1471 | } | |
1da177e4 LT |
1472 | |
1473 | for (;;) { | |
1474 | long tout; | |
1475 | if (signal_pending(current)) { | |
1476 | result = -ERESTARTSYS; | |
1477 | break; | |
1478 | } | |
21cb2a2e TI |
1479 | /* all finished? */ |
1480 | for (i = 0; i < num_drecs; i++) { | |
1481 | runtime = drec[i].substream->runtime; | |
1482 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
1483 | break; | |
1484 | } | |
1485 | if (i == num_drecs) | |
1486 | break; /* yes, all drained */ | |
1487 | ||
1da177e4 LT |
1488 | set_current_state(TASK_INTERRUPTIBLE); |
1489 | snd_pcm_stream_unlock_irq(substream); | |
1490 | snd_power_unlock(card); | |
1491 | tout = schedule_timeout(10 * HZ); | |
1492 | snd_power_lock(card); | |
1493 | snd_pcm_stream_lock_irq(substream); | |
1494 | if (tout == 0) { | |
1495 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1496 | result = -ESTRPIPE; | |
1497 | else { | |
1498 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1499 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1500 | result = -EIO; | |
1501 | } | |
1502 | break; | |
1503 | } | |
1da177e4 | 1504 | } |
21cb2a2e TI |
1505 | |
1506 | snd_pcm_stream_unlock_irq(substream); | |
1507 | ||
1508 | _error: | |
1da177e4 LT |
1509 | for (i = 0; i < num_drecs; i++) { |
1510 | d = &drec[i]; | |
1511 | runtime = d->substream->runtime; | |
1512 | remove_wait_queue(&runtime->sleep, &d->wait); | |
1513 | runtime->stop_threshold = d->stop_threshold; | |
1514 | } | |
1515 | ||
1da177e4 LT |
1516 | if (drec != &drec_tmp) |
1517 | kfree(drec); | |
1da177e4 | 1518 | snd_power_unlock(card); |
1da177e4 LT |
1519 | |
1520 | return result; | |
1521 | } | |
1522 | ||
1523 | /* | |
1524 | * drop ioctl | |
1525 | * | |
1526 | * Immediately put all linked substreams into SETUP state. | |
1527 | */ | |
877211f5 | 1528 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1529 | { |
877211f5 TI |
1530 | struct snd_pcm_runtime *runtime; |
1531 | struct snd_card *card; | |
1da177e4 LT |
1532 | int result = 0; |
1533 | ||
1534 | snd_assert(substream != NULL, return -ENXIO); | |
1535 | runtime = substream->runtime; | |
1536 | card = substream->pcm->card; | |
1537 | ||
de1b8b93 TI |
1538 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1539 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1540 | return -EBADFD; |
1541 | ||
1542 | snd_power_lock(card); | |
1543 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1544 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1545 | if (result < 0) |
1546 | goto _unlock; | |
1547 | } | |
1548 | ||
1549 | snd_pcm_stream_lock_irq(substream); | |
1550 | /* resume pause */ | |
1551 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1552 | snd_pcm_pause(substream, 0); | |
1553 | ||
1554 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1555 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1556 | snd_pcm_stream_unlock_irq(substream); | |
1557 | _unlock: | |
1558 | snd_power_unlock(card); | |
1559 | return result; | |
1560 | } | |
1561 | ||
1562 | ||
1563 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1564 | static struct file *snd_pcm_file_fd(int fd) |
1565 | { | |
1566 | struct file *file; | |
1567 | struct inode *inode; | |
f87135f5 CL |
1568 | unsigned int minor; |
1569 | ||
1da177e4 LT |
1570 | file = fget(fd); |
1571 | if (!file) | |
1572 | return NULL; | |
7bc56323 | 1573 | inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
1574 | if (!S_ISCHR(inode->i_mode) || |
1575 | imajor(inode) != snd_major) { | |
1576 | fput(file); | |
1577 | return NULL; | |
1578 | } | |
1579 | minor = iminor(inode); | |
f87135f5 CL |
1580 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1581 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1582 | fput(file); |
1583 | return NULL; | |
1584 | } | |
1585 | return file; | |
1586 | } | |
1587 | ||
1588 | /* | |
1589 | * PCM link handling | |
1590 | */ | |
877211f5 | 1591 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1592 | { |
1593 | int res = 0; | |
1594 | struct file *file; | |
877211f5 TI |
1595 | struct snd_pcm_file *pcm_file; |
1596 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1597 | |
1598 | file = snd_pcm_file_fd(fd); | |
1599 | if (!file) | |
1600 | return -EBADFD; | |
1601 | pcm_file = file->private_data; | |
1602 | substream1 = pcm_file->substream; | |
1603 | down_write(&snd_pcm_link_rwsem); | |
1604 | write_lock_irq(&snd_pcm_link_rwlock); | |
1605 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1606 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1607 | res = -EBADFD; | |
1608 | goto _end; | |
1609 | } | |
1610 | if (snd_pcm_stream_linked(substream1)) { | |
1611 | res = -EALREADY; | |
1612 | goto _end; | |
1613 | } | |
1614 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1615 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1616 | if (substream->group == NULL) { |
1617 | res = -ENOMEM; | |
1618 | goto _end; | |
1619 | } | |
1620 | spin_lock_init(&substream->group->lock); | |
1621 | INIT_LIST_HEAD(&substream->group->substreams); | |
1622 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1623 | substream->group->count = 1; | |
1624 | } | |
1625 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1626 | substream->group->count++; | |
1627 | substream1->group = substream->group; | |
1628 | _end: | |
1629 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1630 | up_write(&snd_pcm_link_rwsem); | |
1631 | fput(file); | |
1632 | return res; | |
1633 | } | |
1634 | ||
877211f5 | 1635 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1636 | { |
1637 | substream->group = &substream->self_group; | |
1638 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1639 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1640 | } | |
1641 | ||
877211f5 | 1642 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 | 1643 | { |
ef991b95 | 1644 | struct snd_pcm_substream *s; |
1da177e4 LT |
1645 | int res = 0; |
1646 | ||
1647 | down_write(&snd_pcm_link_rwsem); | |
1648 | write_lock_irq(&snd_pcm_link_rwlock); | |
1649 | if (!snd_pcm_stream_linked(substream)) { | |
1650 | res = -EALREADY; | |
1651 | goto _end; | |
1652 | } | |
1653 | list_del(&substream->link_list); | |
1654 | substream->group->count--; | |
1655 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
ef991b95 TI |
1656 | snd_pcm_group_for_each_entry(s, substream) { |
1657 | relink_to_local(s); | |
1da177e4 LT |
1658 | break; |
1659 | } | |
1660 | kfree(substream->group); | |
1661 | } | |
1662 | relink_to_local(substream); | |
1663 | _end: | |
1664 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1665 | up_write(&snd_pcm_link_rwsem); | |
1666 | return res; | |
1667 | } | |
1668 | ||
1669 | /* | |
1670 | * hw configurator | |
1671 | */ | |
877211f5 TI |
1672 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1673 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1674 | { |
877211f5 | 1675 | struct snd_interval t; |
1da177e4 LT |
1676 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1677 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1678 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1679 | } | |
1680 | ||
877211f5 TI |
1681 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1682 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1683 | { |
877211f5 | 1684 | struct snd_interval t; |
1da177e4 LT |
1685 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1686 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1687 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1688 | } | |
1689 | ||
877211f5 TI |
1690 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1691 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1692 | { |
877211f5 | 1693 | struct snd_interval t; |
1da177e4 LT |
1694 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1695 | hw_param_interval_c(params, rule->deps[1]), | |
1696 | (unsigned long) rule->private, &t); | |
1697 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1698 | } | |
1699 | ||
877211f5 TI |
1700 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1701 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1702 | { |
877211f5 | 1703 | struct snd_interval t; |
1da177e4 LT |
1704 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1705 | (unsigned long) rule->private, | |
1706 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1707 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1708 | } | |
1709 | ||
877211f5 TI |
1710 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1711 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1712 | { |
1713 | unsigned int k; | |
877211f5 TI |
1714 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1715 | struct snd_mask m; | |
1716 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1717 | snd_mask_any(&m); |
1718 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1719 | int bits; | |
1720 | if (! snd_mask_test(mask, k)) | |
1721 | continue; | |
1722 | bits = snd_pcm_format_physical_width(k); | |
1723 | if (bits <= 0) | |
1724 | continue; /* ignore invalid formats */ | |
1725 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1726 | snd_mask_reset(&m, k); | |
1727 | } | |
1728 | return snd_mask_refine(mask, &m); | |
1729 | } | |
1730 | ||
877211f5 TI |
1731 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1732 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1733 | { |
877211f5 | 1734 | struct snd_interval t; |
1da177e4 LT |
1735 | unsigned int k; |
1736 | t.min = UINT_MAX; | |
1737 | t.max = 0; | |
1738 | t.openmin = 0; | |
1739 | t.openmax = 0; | |
1740 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1741 | int bits; | |
1742 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1743 | continue; | |
1744 | bits = snd_pcm_format_physical_width(k); | |
1745 | if (bits <= 0) | |
1746 | continue; /* ignore invalid formats */ | |
1747 | if (t.min > (unsigned)bits) | |
1748 | t.min = bits; | |
1749 | if (t.max < (unsigned)bits) | |
1750 | t.max = bits; | |
1751 | } | |
1752 | t.integer = 1; | |
1753 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1754 | } | |
1755 | ||
1756 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1757 | #error "Change this table" | |
1758 | #endif | |
1759 | ||
1760 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1761 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1762 | ||
7653d557 CL |
1763 | const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = { |
1764 | .count = ARRAY_SIZE(rates), | |
1765 | .list = rates, | |
1766 | }; | |
1767 | ||
877211f5 TI |
1768 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1769 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1770 | { |
877211f5 | 1771 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 | 1772 | return snd_interval_list(hw_param_interval(params, rule->var), |
7653d557 CL |
1773 | snd_pcm_known_rates.count, |
1774 | snd_pcm_known_rates.list, hw->rates); | |
1da177e4 LT |
1775 | } |
1776 | ||
877211f5 TI |
1777 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1778 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1779 | { |
877211f5 TI |
1780 | struct snd_interval t; |
1781 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1782 | t.min = 0; |
1783 | t.max = substream->buffer_bytes_max; | |
1784 | t.openmin = 0; | |
1785 | t.openmax = 0; | |
1786 | t.integer = 1; | |
1787 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1788 | } | |
1789 | ||
877211f5 | 1790 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1791 | { |
877211f5 TI |
1792 | struct snd_pcm_runtime *runtime = substream->runtime; |
1793 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1794 | int k, err; |
1795 | ||
1796 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1797 | snd_mask_any(constrs_mask(constrs, k)); | |
1798 | } | |
1799 | ||
1800 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1801 | snd_interval_any(constrs_interval(constrs, k)); | |
1802 | } | |
1803 | ||
1804 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1805 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1806 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1807 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1808 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1809 | ||
1810 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1811 | snd_pcm_hw_rule_format, NULL, | |
1812 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1813 | if (err < 0) | |
1814 | return err; | |
1815 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1816 | snd_pcm_hw_rule_sample_bits, NULL, | |
1817 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1818 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1819 | if (err < 0) | |
1820 | return err; | |
1821 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1822 | snd_pcm_hw_rule_div, NULL, | |
1823 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1824 | if (err < 0) | |
1825 | return err; | |
1826 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1827 | snd_pcm_hw_rule_mul, NULL, | |
1828 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1829 | if (err < 0) | |
1830 | return err; | |
1831 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1832 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1833 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1834 | if (err < 0) | |
1835 | return err; | |
1836 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1837 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1838 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1839 | if (err < 0) | |
1840 | return err; | |
1841 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1842 | snd_pcm_hw_rule_div, NULL, | |
1843 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1844 | if (err < 0) | |
1845 | return err; | |
1846 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1847 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1848 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1849 | if (err < 0) | |
1850 | return err; | |
1851 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1852 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1853 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1854 | if (err < 0) | |
1855 | return err; | |
1856 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1857 | snd_pcm_hw_rule_div, NULL, | |
1858 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1859 | if (err < 0) | |
1860 | return err; | |
1861 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1862 | snd_pcm_hw_rule_div, NULL, | |
1863 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1864 | if (err < 0) | |
1865 | return err; | |
1866 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1867 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1868 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1869 | if (err < 0) | |
1870 | return err; | |
1871 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1872 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1873 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1874 | if (err < 0) | |
1875 | return err; | |
1876 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1877 | snd_pcm_hw_rule_mul, NULL, | |
1878 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1879 | if (err < 0) | |
1880 | return err; | |
1881 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1882 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1883 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1884 | if (err < 0) | |
1885 | return err; | |
1886 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1887 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1888 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1889 | if (err < 0) | |
1890 | return err; | |
1891 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1892 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1893 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1894 | if (err < 0) | |
1895 | return err; | |
1896 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1897 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1898 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1899 | if (err < 0) | |
1900 | return err; | |
1901 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1902 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1903 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1904 | if (err < 0) | |
1905 | return err; | |
1906 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1907 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1908 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1909 | if (err < 0) | |
1910 | return err; | |
1911 | return 0; | |
1912 | } | |
1913 | ||
877211f5 | 1914 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1915 | { |
877211f5 TI |
1916 | struct snd_pcm_runtime *runtime = substream->runtime; |
1917 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1918 | int err; |
1919 | unsigned int mask = 0; | |
1920 | ||
1921 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1922 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1923 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1924 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1925 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1926 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1927 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1928 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1929 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1930 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1931 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1932 | } | |
1933 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
1934 | snd_assert(err >= 0, return -EINVAL); | |
1935 | ||
1936 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
1937 | snd_assert(err >= 0, return -EINVAL); | |
1938 | ||
1939 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
1940 | snd_assert(err >= 0, return -EINVAL); | |
1941 | ||
1942 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1943 | hw->channels_min, hw->channels_max); | |
1944 | snd_assert(err >= 0, return -EINVAL); | |
1945 | ||
1946 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1947 | hw->rate_min, hw->rate_max); | |
1948 | snd_assert(err >= 0, return -EINVAL); | |
1949 | ||
1950 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1951 | hw->period_bytes_min, hw->period_bytes_max); | |
1952 | snd_assert(err >= 0, return -EINVAL); | |
1953 | ||
1954 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1955 | hw->periods_min, hw->periods_max); | |
1956 | snd_assert(err >= 0, return -EINVAL); | |
1957 | ||
1958 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1959 | hw->period_bytes_min, hw->buffer_bytes_max); | |
1960 | snd_assert(err >= 0, return -EINVAL); | |
1961 | ||
1962 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1963 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1964 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1965 | if (err < 0) | |
1966 | return err; | |
1967 | ||
1968 | /* FIXME: remove */ | |
1969 | if (runtime->dma_bytes) { | |
1970 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
1971 | snd_assert(err >= 0, return -EINVAL); | |
1972 | } | |
1973 | ||
1974 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
1975 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1976 | snd_pcm_hw_rule_rate, hw, | |
1977 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1978 | if (err < 0) | |
1979 | return err; | |
1980 | } | |
1981 | ||
1982 | /* FIXME: this belong to lowlevel */ | |
1da177e4 LT |
1983 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); |
1984 | ||
1985 | return 0; | |
1986 | } | |
1987 | ||
3bf75f9b | 1988 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 1989 | { |
1da177e4 | 1990 | snd_pcm_unlink(substream); |
3bf75f9b TI |
1991 | } |
1992 | ||
1993 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
1994 | { | |
0df63e44 TI |
1995 | substream->ref_count--; |
1996 | if (substream->ref_count > 0) | |
1997 | return; | |
1998 | ||
3bf75f9b | 1999 | snd_pcm_drop(substream); |
3bf75f9b | 2000 | if (substream->hw_opened) { |
1da177e4 LT |
2001 | if (substream->ops->hw_free != NULL) |
2002 | substream->ops->hw_free(substream); | |
2003 | substream->ops->close(substream); | |
3bf75f9b | 2004 | substream->hw_opened = 0; |
1da177e4 | 2005 | } |
1576274d TI |
2006 | if (substream->pcm_release) { |
2007 | substream->pcm_release(substream); | |
2008 | substream->pcm_release = NULL; | |
2009 | } | |
3bf75f9b TI |
2010 | snd_pcm_detach_substream(substream); |
2011 | } | |
2012 | ||
e88e8ae6 TI |
2013 | EXPORT_SYMBOL(snd_pcm_release_substream); |
2014 | ||
3bf75f9b TI |
2015 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
2016 | struct file *file, | |
2017 | struct snd_pcm_substream **rsubstream) | |
2018 | { | |
2019 | struct snd_pcm_substream *substream; | |
2020 | int err; | |
2021 | ||
2022 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2023 | if (err < 0) | |
2024 | return err; | |
0df63e44 TI |
2025 | if (substream->ref_count > 1) { |
2026 | *rsubstream = substream; | |
2027 | return 0; | |
2028 | } | |
2029 | ||
3bf75f9b TI |
2030 | err = snd_pcm_hw_constraints_init(substream); |
2031 | if (err < 0) { | |
2032 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2033 | goto error; | |
2034 | } | |
2035 | ||
2036 | if ((err = substream->ops->open(substream)) < 0) | |
2037 | goto error; | |
2038 | ||
2039 | substream->hw_opened = 1; | |
2040 | ||
2041 | err = snd_pcm_hw_constraints_complete(substream); | |
2042 | if (err < 0) { | |
2043 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2044 | goto error; | |
2045 | } | |
2046 | ||
2047 | *rsubstream = substream; | |
1da177e4 | 2048 | return 0; |
3bf75f9b TI |
2049 | |
2050 | error: | |
2051 | snd_pcm_release_substream(substream); | |
2052 | return err; | |
1da177e4 LT |
2053 | } |
2054 | ||
e88e8ae6 TI |
2055 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2056 | ||
1da177e4 | 2057 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2058 | struct snd_pcm *pcm, |
1da177e4 | 2059 | int stream, |
877211f5 | 2060 | struct snd_pcm_file **rpcm_file) |
1da177e4 | 2061 | { |
877211f5 TI |
2062 | struct snd_pcm_file *pcm_file; |
2063 | struct snd_pcm_substream *substream; | |
2064 | struct snd_pcm_str *str; | |
3bf75f9b | 2065 | int err; |
1da177e4 LT |
2066 | |
2067 | snd_assert(rpcm_file != NULL, return -EINVAL); | |
2068 | *rpcm_file = NULL; | |
2069 | ||
3bf75f9b TI |
2070 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2071 | if (err < 0) | |
2072 | return err; | |
2073 | ||
548a648b TI |
2074 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
2075 | if (pcm_file == NULL) { | |
2076 | snd_pcm_release_substream(substream); | |
2077 | return -ENOMEM; | |
2078 | } | |
2079 | pcm_file->substream = substream; | |
2080 | if (substream->ref_count == 1) { | |
0df63e44 TI |
2081 | str = substream->pstr; |
2082 | substream->file = pcm_file; | |
2083 | substream->pcm_release = pcm_release_private; | |
1da177e4 | 2084 | } |
1da177e4 LT |
2085 | file->private_data = pcm_file; |
2086 | *rpcm_file = pcm_file; | |
2087 | return 0; | |
2088 | } | |
2089 | ||
f87135f5 CL |
2090 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2091 | { | |
2092 | struct snd_pcm *pcm; | |
2093 | ||
2094 | pcm = snd_lookup_minor_data(iminor(inode), | |
2095 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2096 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2097 | } | |
2098 | ||
2099 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2100 | { |
877211f5 | 2101 | struct snd_pcm *pcm; |
f87135f5 CL |
2102 | |
2103 | pcm = snd_lookup_minor_data(iminor(inode), | |
2104 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2105 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2106 | } | |
2107 | ||
2108 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2109 | { | |
2110 | int err; | |
877211f5 | 2111 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2112 | wait_queue_t wait; |
2113 | ||
1da177e4 LT |
2114 | if (pcm == NULL) { |
2115 | err = -ENODEV; | |
2116 | goto __error1; | |
2117 | } | |
2118 | err = snd_card_file_add(pcm->card, file); | |
2119 | if (err < 0) | |
2120 | goto __error1; | |
2121 | if (!try_module_get(pcm->card->module)) { | |
2122 | err = -EFAULT; | |
2123 | goto __error2; | |
2124 | } | |
2125 | init_waitqueue_entry(&wait, current); | |
2126 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2127 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2128 | while (1) { |
f87135f5 | 2129 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2130 | if (err >= 0) |
2131 | break; | |
2132 | if (err == -EAGAIN) { | |
2133 | if (file->f_flags & O_NONBLOCK) { | |
2134 | err = -EBUSY; | |
2135 | break; | |
2136 | } | |
2137 | } else | |
2138 | break; | |
2139 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2140 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2141 | schedule(); |
1a60d4c5 | 2142 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2143 | if (signal_pending(current)) { |
2144 | err = -ERESTARTSYS; | |
2145 | break; | |
2146 | } | |
2147 | } | |
2148 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2149 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2150 | if (err < 0) |
2151 | goto __error; | |
2152 | return err; | |
2153 | ||
2154 | __error: | |
2155 | module_put(pcm->card->module); | |
2156 | __error2: | |
2157 | snd_card_file_remove(pcm->card, file); | |
2158 | __error1: | |
2159 | return err; | |
2160 | } | |
2161 | ||
2162 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2163 | { | |
877211f5 TI |
2164 | struct snd_pcm *pcm; |
2165 | struct snd_pcm_substream *substream; | |
2166 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2167 | |
2168 | pcm_file = file->private_data; | |
2169 | substream = pcm_file->substream; | |
2170 | snd_assert(substream != NULL, return -ENXIO); | |
1da177e4 | 2171 | pcm = substream->pcm; |
1da177e4 | 2172 | fasync_helper(-1, file, 0, &substream->runtime->fasync); |
1a60d4c5 | 2173 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2174 | snd_pcm_release_substream(substream); |
548a648b | 2175 | kfree(pcm_file); |
1a60d4c5 | 2176 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2177 | wake_up(&pcm->open_wait); |
2178 | module_put(pcm->card->module); | |
2179 | snd_card_file_remove(pcm->card, file); | |
2180 | return 0; | |
2181 | } | |
2182 | ||
877211f5 TI |
2183 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2184 | snd_pcm_uframes_t frames) | |
1da177e4 | 2185 | { |
877211f5 | 2186 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2187 | snd_pcm_sframes_t appl_ptr; |
2188 | snd_pcm_sframes_t ret; | |
2189 | snd_pcm_sframes_t hw_avail; | |
2190 | ||
2191 | if (frames == 0) | |
2192 | return 0; | |
2193 | ||
2194 | snd_pcm_stream_lock_irq(substream); | |
2195 | switch (runtime->status->state) { | |
2196 | case SNDRV_PCM_STATE_PREPARED: | |
2197 | break; | |
2198 | case SNDRV_PCM_STATE_DRAINING: | |
2199 | case SNDRV_PCM_STATE_RUNNING: | |
2200 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2201 | break; | |
2202 | /* Fall through */ | |
2203 | case SNDRV_PCM_STATE_XRUN: | |
2204 | ret = -EPIPE; | |
2205 | goto __end; | |
2206 | default: | |
2207 | ret = -EBADFD; | |
2208 | goto __end; | |
2209 | } | |
2210 | ||
2211 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2212 | if (hw_avail <= 0) { | |
2213 | ret = 0; | |
2214 | goto __end; | |
2215 | } | |
2216 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2217 | frames = hw_avail; | |
1da177e4 LT |
2218 | appl_ptr = runtime->control->appl_ptr - frames; |
2219 | if (appl_ptr < 0) | |
2220 | appl_ptr += runtime->boundary; | |
2221 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2222 | ret = frames; |
2223 | __end: | |
2224 | snd_pcm_stream_unlock_irq(substream); | |
2225 | return ret; | |
2226 | } | |
2227 | ||
877211f5 TI |
2228 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2229 | snd_pcm_uframes_t frames) | |
1da177e4 | 2230 | { |
877211f5 | 2231 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2232 | snd_pcm_sframes_t appl_ptr; |
2233 | snd_pcm_sframes_t ret; | |
2234 | snd_pcm_sframes_t hw_avail; | |
2235 | ||
2236 | if (frames == 0) | |
2237 | return 0; | |
2238 | ||
2239 | snd_pcm_stream_lock_irq(substream); | |
2240 | switch (runtime->status->state) { | |
2241 | case SNDRV_PCM_STATE_PREPARED: | |
2242 | case SNDRV_PCM_STATE_DRAINING: | |
2243 | break; | |
2244 | case SNDRV_PCM_STATE_RUNNING: | |
2245 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2246 | break; | |
2247 | /* Fall through */ | |
2248 | case SNDRV_PCM_STATE_XRUN: | |
2249 | ret = -EPIPE; | |
2250 | goto __end; | |
2251 | default: | |
2252 | ret = -EBADFD; | |
2253 | goto __end; | |
2254 | } | |
2255 | ||
2256 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2257 | if (hw_avail <= 0) { | |
2258 | ret = 0; | |
2259 | goto __end; | |
2260 | } | |
2261 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2262 | frames = hw_avail; | |
1da177e4 LT |
2263 | appl_ptr = runtime->control->appl_ptr - frames; |
2264 | if (appl_ptr < 0) | |
2265 | appl_ptr += runtime->boundary; | |
2266 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2267 | ret = frames; |
2268 | __end: | |
2269 | snd_pcm_stream_unlock_irq(substream); | |
2270 | return ret; | |
2271 | } | |
2272 | ||
877211f5 TI |
2273 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2274 | snd_pcm_uframes_t frames) | |
1da177e4 | 2275 | { |
877211f5 | 2276 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2277 | snd_pcm_sframes_t appl_ptr; |
2278 | snd_pcm_sframes_t ret; | |
2279 | snd_pcm_sframes_t avail; | |
2280 | ||
2281 | if (frames == 0) | |
2282 | return 0; | |
2283 | ||
2284 | snd_pcm_stream_lock_irq(substream); | |
2285 | switch (runtime->status->state) { | |
2286 | case SNDRV_PCM_STATE_PREPARED: | |
2287 | case SNDRV_PCM_STATE_PAUSED: | |
2288 | break; | |
2289 | case SNDRV_PCM_STATE_DRAINING: | |
2290 | case SNDRV_PCM_STATE_RUNNING: | |
2291 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2292 | break; | |
2293 | /* Fall through */ | |
2294 | case SNDRV_PCM_STATE_XRUN: | |
2295 | ret = -EPIPE; | |
2296 | goto __end; | |
2297 | default: | |
2298 | ret = -EBADFD; | |
2299 | goto __end; | |
2300 | } | |
2301 | ||
2302 | avail = snd_pcm_playback_avail(runtime); | |
2303 | if (avail <= 0) { | |
2304 | ret = 0; | |
2305 | goto __end; | |
2306 | } | |
2307 | if (frames > (snd_pcm_uframes_t)avail) | |
2308 | frames = avail; | |
1da177e4 LT |
2309 | appl_ptr = runtime->control->appl_ptr + frames; |
2310 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2311 | appl_ptr -= runtime->boundary; | |
2312 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2313 | ret = frames; |
2314 | __end: | |
2315 | snd_pcm_stream_unlock_irq(substream); | |
2316 | return ret; | |
2317 | } | |
2318 | ||
877211f5 TI |
2319 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2320 | snd_pcm_uframes_t frames) | |
1da177e4 | 2321 | { |
877211f5 | 2322 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2323 | snd_pcm_sframes_t appl_ptr; |
2324 | snd_pcm_sframes_t ret; | |
2325 | snd_pcm_sframes_t avail; | |
2326 | ||
2327 | if (frames == 0) | |
2328 | return 0; | |
2329 | ||
2330 | snd_pcm_stream_lock_irq(substream); | |
2331 | switch (runtime->status->state) { | |
2332 | case SNDRV_PCM_STATE_PREPARED: | |
2333 | case SNDRV_PCM_STATE_DRAINING: | |
2334 | case SNDRV_PCM_STATE_PAUSED: | |
2335 | break; | |
2336 | case SNDRV_PCM_STATE_RUNNING: | |
2337 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2338 | break; | |
2339 | /* Fall through */ | |
2340 | case SNDRV_PCM_STATE_XRUN: | |
2341 | ret = -EPIPE; | |
2342 | goto __end; | |
2343 | default: | |
2344 | ret = -EBADFD; | |
2345 | goto __end; | |
2346 | } | |
2347 | ||
2348 | avail = snd_pcm_capture_avail(runtime); | |
2349 | if (avail <= 0) { | |
2350 | ret = 0; | |
2351 | goto __end; | |
2352 | } | |
2353 | if (frames > (snd_pcm_uframes_t)avail) | |
2354 | frames = avail; | |
1da177e4 LT |
2355 | appl_ptr = runtime->control->appl_ptr + frames; |
2356 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2357 | appl_ptr -= runtime->boundary; | |
2358 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2359 | ret = frames; |
2360 | __end: | |
2361 | snd_pcm_stream_unlock_irq(substream); | |
2362 | return ret; | |
2363 | } | |
2364 | ||
877211f5 | 2365 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2366 | { |
877211f5 | 2367 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2368 | int err; |
2369 | ||
2370 | snd_pcm_stream_lock_irq(substream); | |
2371 | switch (runtime->status->state) { | |
2372 | case SNDRV_PCM_STATE_DRAINING: | |
2373 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2374 | goto __badfd; | |
2375 | case SNDRV_PCM_STATE_RUNNING: | |
2376 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2377 | break; | |
2378 | /* Fall through */ | |
2379 | case SNDRV_PCM_STATE_PREPARED: | |
2380 | case SNDRV_PCM_STATE_SUSPENDED: | |
2381 | err = 0; | |
2382 | break; | |
2383 | case SNDRV_PCM_STATE_XRUN: | |
2384 | err = -EPIPE; | |
2385 | break; | |
2386 | default: | |
2387 | __badfd: | |
2388 | err = -EBADFD; | |
2389 | break; | |
2390 | } | |
2391 | snd_pcm_stream_unlock_irq(substream); | |
2392 | return err; | |
2393 | } | |
2394 | ||
877211f5 TI |
2395 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2396 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2397 | { |
877211f5 | 2398 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2399 | int err; |
2400 | snd_pcm_sframes_t n = 0; | |
2401 | ||
2402 | snd_pcm_stream_lock_irq(substream); | |
2403 | switch (runtime->status->state) { | |
2404 | case SNDRV_PCM_STATE_DRAINING: | |
2405 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2406 | goto __badfd; | |
2407 | case SNDRV_PCM_STATE_RUNNING: | |
2408 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2409 | break; | |
2410 | /* Fall through */ | |
2411 | case SNDRV_PCM_STATE_PREPARED: | |
2412 | case SNDRV_PCM_STATE_SUSPENDED: | |
2413 | err = 0; | |
2414 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2415 | n = snd_pcm_playback_hw_avail(runtime); | |
2416 | else | |
2417 | n = snd_pcm_capture_avail(runtime); | |
2418 | break; | |
2419 | case SNDRV_PCM_STATE_XRUN: | |
2420 | err = -EPIPE; | |
2421 | break; | |
2422 | default: | |
2423 | __badfd: | |
2424 | err = -EBADFD; | |
2425 | break; | |
2426 | } | |
2427 | snd_pcm_stream_unlock_irq(substream); | |
2428 | if (!err) | |
2429 | if (put_user(n, res)) | |
2430 | err = -EFAULT; | |
2431 | return err; | |
2432 | } | |
2433 | ||
877211f5 TI |
2434 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2435 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2436 | { |
877211f5 TI |
2437 | struct snd_pcm_runtime *runtime = substream->runtime; |
2438 | struct snd_pcm_sync_ptr sync_ptr; | |
2439 | volatile struct snd_pcm_mmap_status *status; | |
2440 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2441 | int err; |
2442 | ||
2443 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2444 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2445 | return -EFAULT; | |
877211f5 | 2446 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2447 | return -EFAULT; |
2448 | status = runtime->status; | |
2449 | control = runtime->control; | |
2450 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2451 | err = snd_pcm_hwsync(substream); | |
2452 | if (err < 0) | |
2453 | return err; | |
2454 | } | |
2455 | snd_pcm_stream_lock_irq(substream); | |
2456 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2457 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2458 | else | |
2459 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2460 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2461 | control->avail_min = sync_ptr.c.control.avail_min; | |
2462 | else | |
2463 | sync_ptr.c.control.avail_min = control->avail_min; | |
2464 | sync_ptr.s.status.state = status->state; | |
2465 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2466 | sync_ptr.s.status.tstamp = status->tstamp; | |
2467 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2468 | snd_pcm_stream_unlock_irq(substream); | |
2469 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2470 | return -EFAULT; | |
2471 | return 0; | |
2472 | } | |
b751eef1 JK |
2473 | |
2474 | static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg) | |
2475 | { | |
2476 | struct snd_pcm_runtime *runtime = substream->runtime; | |
2477 | int arg; | |
2478 | ||
2479 | if (get_user(arg, _arg)) | |
2480 | return -EFAULT; | |
2481 | if (arg < 0 || arg > SNDRV_PCM_TSTAMP_TYPE_LAST) | |
2482 | return -EINVAL; | |
2483 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY; | |
2484 | if (arg == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC) | |
2485 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC; | |
2486 | return 0; | |
2487 | } | |
1da177e4 | 2488 | |
0df63e44 TI |
2489 | static int snd_pcm_common_ioctl1(struct file *file, |
2490 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2491 | unsigned int cmd, void __user *arg) |
2492 | { | |
2493 | snd_assert(substream != NULL, return -ENXIO); | |
2494 | ||
2495 | switch (cmd) { | |
2496 | case SNDRV_PCM_IOCTL_PVERSION: | |
2497 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2498 | case SNDRV_PCM_IOCTL_INFO: | |
2499 | return snd_pcm_info_user(substream, arg); | |
28e9e473 JK |
2500 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
2501 | return 0; | |
b751eef1 JK |
2502 | case SNDRV_PCM_IOCTL_TTSTAMP: |
2503 | return snd_pcm_tstamp(substream, arg); | |
1da177e4 LT |
2504 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2505 | return snd_pcm_hw_refine_user(substream, arg); | |
2506 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2507 | return snd_pcm_hw_params_user(substream, arg); | |
2508 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2509 | return snd_pcm_hw_free(substream); | |
2510 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2511 | return snd_pcm_sw_params_user(substream, arg); | |
2512 | case SNDRV_PCM_IOCTL_STATUS: | |
2513 | return snd_pcm_status_user(substream, arg); | |
2514 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2515 | return snd_pcm_channel_info_user(substream, arg); | |
2516 | case SNDRV_PCM_IOCTL_PREPARE: | |
0df63e44 | 2517 | return snd_pcm_prepare(substream, file); |
1da177e4 LT |
2518 | case SNDRV_PCM_IOCTL_RESET: |
2519 | return snd_pcm_reset(substream); | |
2520 | case SNDRV_PCM_IOCTL_START: | |
2521 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2522 | case SNDRV_PCM_IOCTL_LINK: | |
2523 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2524 | case SNDRV_PCM_IOCTL_UNLINK: | |
2525 | return snd_pcm_unlink(substream); | |
2526 | case SNDRV_PCM_IOCTL_RESUME: | |
2527 | return snd_pcm_resume(substream); | |
2528 | case SNDRV_PCM_IOCTL_XRUN: | |
2529 | return snd_pcm_xrun(substream); | |
2530 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2531 | return snd_pcm_hwsync(substream); | |
2532 | case SNDRV_PCM_IOCTL_DELAY: | |
2533 | return snd_pcm_delay(substream, arg); | |
2534 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2535 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2536 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2537 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2538 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2539 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2540 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2541 | #endif |
1da177e4 LT |
2542 | case SNDRV_PCM_IOCTL_DRAIN: |
2543 | return snd_pcm_drain(substream); | |
2544 | case SNDRV_PCM_IOCTL_DROP: | |
2545 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2546 | case SNDRV_PCM_IOCTL_PAUSE: |
2547 | { | |
2548 | int res; | |
2549 | snd_pcm_stream_lock_irq(substream); | |
2550 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2551 | snd_pcm_stream_unlock_irq(substream); | |
2552 | return res; | |
2553 | } | |
1da177e4 LT |
2554 | } |
2555 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2556 | return -ENOTTY; | |
2557 | } | |
2558 | ||
0df63e44 TI |
2559 | static int snd_pcm_playback_ioctl1(struct file *file, |
2560 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2561 | unsigned int cmd, void __user *arg) |
2562 | { | |
2563 | snd_assert(substream != NULL, return -ENXIO); | |
2564 | snd_assert(substream->stream == SNDRV_PCM_STREAM_PLAYBACK, return -EINVAL); | |
2565 | switch (cmd) { | |
2566 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2567 | { | |
877211f5 TI |
2568 | struct snd_xferi xferi; |
2569 | struct snd_xferi __user *_xferi = arg; | |
2570 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2571 | snd_pcm_sframes_t result; |
2572 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2573 | return -EBADFD; | |
2574 | if (put_user(0, &_xferi->result)) | |
2575 | return -EFAULT; | |
2576 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2577 | return -EFAULT; | |
2578 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2579 | __put_user(result, &_xferi->result); | |
2580 | return result < 0 ? result : 0; | |
2581 | } | |
2582 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2583 | { | |
877211f5 TI |
2584 | struct snd_xfern xfern; |
2585 | struct snd_xfern __user *_xfern = arg; | |
2586 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2587 | void __user **bufs; |
2588 | snd_pcm_sframes_t result; | |
2589 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2590 | return -EBADFD; | |
2591 | if (runtime->channels > 128) | |
2592 | return -EINVAL; | |
2593 | if (put_user(0, &_xfern->result)) | |
2594 | return -EFAULT; | |
2595 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2596 | return -EFAULT; | |
2597 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2598 | if (bufs == NULL) | |
2599 | return -ENOMEM; | |
2600 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2601 | kfree(bufs); | |
2602 | return -EFAULT; | |
2603 | } | |
2604 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); | |
2605 | kfree(bufs); | |
2606 | __put_user(result, &_xfern->result); | |
2607 | return result < 0 ? result : 0; | |
2608 | } | |
2609 | case SNDRV_PCM_IOCTL_REWIND: | |
2610 | { | |
2611 | snd_pcm_uframes_t frames; | |
2612 | snd_pcm_uframes_t __user *_frames = arg; | |
2613 | snd_pcm_sframes_t result; | |
2614 | if (get_user(frames, _frames)) | |
2615 | return -EFAULT; | |
2616 | if (put_user(0, _frames)) | |
2617 | return -EFAULT; | |
2618 | result = snd_pcm_playback_rewind(substream, frames); | |
2619 | __put_user(result, _frames); | |
2620 | return result < 0 ? result : 0; | |
2621 | } | |
2622 | case SNDRV_PCM_IOCTL_FORWARD: | |
2623 | { | |
2624 | snd_pcm_uframes_t frames; | |
2625 | snd_pcm_uframes_t __user *_frames = arg; | |
2626 | snd_pcm_sframes_t result; | |
2627 | if (get_user(frames, _frames)) | |
2628 | return -EFAULT; | |
2629 | if (put_user(0, _frames)) | |
2630 | return -EFAULT; | |
2631 | result = snd_pcm_playback_forward(substream, frames); | |
2632 | __put_user(result, _frames); | |
2633 | return result < 0 ? result : 0; | |
2634 | } | |
1da177e4 | 2635 | } |
0df63e44 | 2636 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2637 | } |
2638 | ||
0df63e44 TI |
2639 | static int snd_pcm_capture_ioctl1(struct file *file, |
2640 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2641 | unsigned int cmd, void __user *arg) |
2642 | { | |
2643 | snd_assert(substream != NULL, return -ENXIO); | |
2644 | snd_assert(substream->stream == SNDRV_PCM_STREAM_CAPTURE, return -EINVAL); | |
2645 | switch (cmd) { | |
2646 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2647 | { | |
877211f5 TI |
2648 | struct snd_xferi xferi; |
2649 | struct snd_xferi __user *_xferi = arg; | |
2650 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2651 | snd_pcm_sframes_t result; |
2652 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2653 | return -EBADFD; | |
2654 | if (put_user(0, &_xferi->result)) | |
2655 | return -EFAULT; | |
2656 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2657 | return -EFAULT; | |
2658 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2659 | __put_user(result, &_xferi->result); | |
2660 | return result < 0 ? result : 0; | |
2661 | } | |
2662 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2663 | { | |
877211f5 TI |
2664 | struct snd_xfern xfern; |
2665 | struct snd_xfern __user *_xfern = arg; | |
2666 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2667 | void *bufs; |
2668 | snd_pcm_sframes_t result; | |
2669 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2670 | return -EBADFD; | |
2671 | if (runtime->channels > 128) | |
2672 | return -EINVAL; | |
2673 | if (put_user(0, &_xfern->result)) | |
2674 | return -EFAULT; | |
2675 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2676 | return -EFAULT; | |
2677 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2678 | if (bufs == NULL) | |
2679 | return -ENOMEM; | |
2680 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2681 | kfree(bufs); | |
2682 | return -EFAULT; | |
2683 | } | |
2684 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); | |
2685 | kfree(bufs); | |
2686 | __put_user(result, &_xfern->result); | |
2687 | return result < 0 ? result : 0; | |
2688 | } | |
2689 | case SNDRV_PCM_IOCTL_REWIND: | |
2690 | { | |
2691 | snd_pcm_uframes_t frames; | |
2692 | snd_pcm_uframes_t __user *_frames = arg; | |
2693 | snd_pcm_sframes_t result; | |
2694 | if (get_user(frames, _frames)) | |
2695 | return -EFAULT; | |
2696 | if (put_user(0, _frames)) | |
2697 | return -EFAULT; | |
2698 | result = snd_pcm_capture_rewind(substream, frames); | |
2699 | __put_user(result, _frames); | |
2700 | return result < 0 ? result : 0; | |
2701 | } | |
2702 | case SNDRV_PCM_IOCTL_FORWARD: | |
2703 | { | |
2704 | snd_pcm_uframes_t frames; | |
2705 | snd_pcm_uframes_t __user *_frames = arg; | |
2706 | snd_pcm_sframes_t result; | |
2707 | if (get_user(frames, _frames)) | |
2708 | return -EFAULT; | |
2709 | if (put_user(0, _frames)) | |
2710 | return -EFAULT; | |
2711 | result = snd_pcm_capture_forward(substream, frames); | |
2712 | __put_user(result, _frames); | |
2713 | return result < 0 ? result : 0; | |
2714 | } | |
2715 | } | |
0df63e44 | 2716 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2717 | } |
2718 | ||
877211f5 TI |
2719 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2720 | unsigned long arg) | |
1da177e4 | 2721 | { |
877211f5 | 2722 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2723 | |
2724 | pcm_file = file->private_data; | |
2725 | ||
2726 | if (((cmd >> 8) & 0xff) != 'A') | |
2727 | return -ENOTTY; | |
2728 | ||
0df63e44 TI |
2729 | return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd, |
2730 | (void __user *)arg); | |
1da177e4 LT |
2731 | } |
2732 | ||
877211f5 TI |
2733 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2734 | unsigned long arg) | |
1da177e4 | 2735 | { |
877211f5 | 2736 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2737 | |
2738 | pcm_file = file->private_data; | |
2739 | ||
2740 | if (((cmd >> 8) & 0xff) != 'A') | |
2741 | return -ENOTTY; | |
2742 | ||
0df63e44 TI |
2743 | return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd, |
2744 | (void __user *)arg); | |
1da177e4 LT |
2745 | } |
2746 | ||
bf1bbb5a TI |
2747 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2748 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2749 | { |
2750 | mm_segment_t fs; | |
2751 | int result; | |
2752 | ||
2753 | fs = snd_enter_user(); | |
1da177e4 LT |
2754 | switch (substream->stream) { |
2755 | case SNDRV_PCM_STREAM_PLAYBACK: | |
0df63e44 TI |
2756 | result = snd_pcm_playback_ioctl1(NULL, substream, cmd, |
2757 | (void __user *)arg); | |
bf1bbb5a | 2758 | break; |
1da177e4 | 2759 | case SNDRV_PCM_STREAM_CAPTURE: |
0df63e44 TI |
2760 | result = snd_pcm_capture_ioctl1(NULL, substream, cmd, |
2761 | (void __user *)arg); | |
bf1bbb5a | 2762 | break; |
1da177e4 | 2763 | default: |
bf1bbb5a TI |
2764 | result = -EINVAL; |
2765 | break; | |
1da177e4 | 2766 | } |
bf1bbb5a TI |
2767 | snd_leave_user(fs); |
2768 | return result; | |
1da177e4 LT |
2769 | } |
2770 | ||
e88e8ae6 TI |
2771 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2772 | ||
877211f5 TI |
2773 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2774 | loff_t * offset) | |
1da177e4 | 2775 | { |
877211f5 TI |
2776 | struct snd_pcm_file *pcm_file; |
2777 | struct snd_pcm_substream *substream; | |
2778 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2779 | snd_pcm_sframes_t result; |
2780 | ||
2781 | pcm_file = file->private_data; | |
2782 | substream = pcm_file->substream; | |
2783 | snd_assert(substream != NULL, return -ENXIO); | |
2784 | runtime = substream->runtime; | |
2785 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2786 | return -EBADFD; | |
2787 | if (!frame_aligned(runtime, count)) | |
2788 | return -EINVAL; | |
2789 | count = bytes_to_frames(runtime, count); | |
2790 | result = snd_pcm_lib_read(substream, buf, count); | |
2791 | if (result > 0) | |
2792 | result = frames_to_bytes(runtime, result); | |
2793 | return result; | |
2794 | } | |
2795 | ||
877211f5 TI |
2796 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2797 | size_t count, loff_t * offset) | |
1da177e4 | 2798 | { |
877211f5 TI |
2799 | struct snd_pcm_file *pcm_file; |
2800 | struct snd_pcm_substream *substream; | |
2801 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2802 | snd_pcm_sframes_t result; |
2803 | ||
2804 | pcm_file = file->private_data; | |
2805 | substream = pcm_file->substream; | |
2806 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2807 | runtime = substream->runtime; | |
2808 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2809 | result = -EBADFD; | |
2810 | goto end; | |
2811 | } | |
2812 | if (!frame_aligned(runtime, count)) { | |
2813 | result = -EINVAL; | |
2814 | goto end; | |
2815 | } | |
2816 | count = bytes_to_frames(runtime, count); | |
2817 | result = snd_pcm_lib_write(substream, buf, count); | |
2818 | if (result > 0) | |
2819 | result = frames_to_bytes(runtime, result); | |
2820 | end: | |
2821 | return result; | |
2822 | } | |
2823 | ||
ee0b3e67 BP |
2824 | static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov, |
2825 | unsigned long nr_segs, loff_t pos) | |
1da177e4 LT |
2826 | |
2827 | { | |
877211f5 TI |
2828 | struct snd_pcm_file *pcm_file; |
2829 | struct snd_pcm_substream *substream; | |
2830 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2831 | snd_pcm_sframes_t result; |
2832 | unsigned long i; | |
2833 | void __user **bufs; | |
2834 | snd_pcm_uframes_t frames; | |
2835 | ||
ee0b3e67 | 2836 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 LT |
2837 | substream = pcm_file->substream; |
2838 | snd_assert(substream != NULL, return -ENXIO); | |
2839 | runtime = substream->runtime; | |
2840 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2841 | return -EBADFD; | |
ee0b3e67 | 2842 | if (nr_segs > 1024 || nr_segs != runtime->channels) |
1da177e4 | 2843 | return -EINVAL; |
ee0b3e67 | 2844 | if (!frame_aligned(runtime, iov->iov_len)) |
1da177e4 | 2845 | return -EINVAL; |
ee0b3e67 BP |
2846 | frames = bytes_to_samples(runtime, iov->iov_len); |
2847 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2848 | if (bufs == NULL) |
2849 | return -ENOMEM; | |
ee0b3e67 BP |
2850 | for (i = 0; i < nr_segs; ++i) |
2851 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2852 | result = snd_pcm_lib_readv(substream, bufs, frames); |
2853 | if (result > 0) | |
2854 | result = frames_to_bytes(runtime, result); | |
2855 | kfree(bufs); | |
2856 | return result; | |
2857 | } | |
2858 | ||
ee0b3e67 BP |
2859 | static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov, |
2860 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 2861 | { |
877211f5 TI |
2862 | struct snd_pcm_file *pcm_file; |
2863 | struct snd_pcm_substream *substream; | |
2864 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2865 | snd_pcm_sframes_t result; |
2866 | unsigned long i; | |
2867 | void __user **bufs; | |
2868 | snd_pcm_uframes_t frames; | |
2869 | ||
ee0b3e67 | 2870 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 LT |
2871 | substream = pcm_file->substream; |
2872 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2873 | runtime = substream->runtime; | |
2874 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2875 | result = -EBADFD; | |
2876 | goto end; | |
2877 | } | |
ee0b3e67 BP |
2878 | if (nr_segs > 128 || nr_segs != runtime->channels || |
2879 | !frame_aligned(runtime, iov->iov_len)) { | |
1da177e4 LT |
2880 | result = -EINVAL; |
2881 | goto end; | |
2882 | } | |
ee0b3e67 BP |
2883 | frames = bytes_to_samples(runtime, iov->iov_len); |
2884 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2885 | if (bufs == NULL) |
2886 | return -ENOMEM; | |
ee0b3e67 BP |
2887 | for (i = 0; i < nr_segs; ++i) |
2888 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2889 | result = snd_pcm_lib_writev(substream, bufs, frames); |
2890 | if (result > 0) | |
2891 | result = frames_to_bytes(runtime, result); | |
2892 | kfree(bufs); | |
2893 | end: | |
2894 | return result; | |
2895 | } | |
2896 | ||
2897 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2898 | { | |
877211f5 TI |
2899 | struct snd_pcm_file *pcm_file; |
2900 | struct snd_pcm_substream *substream; | |
2901 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2902 | unsigned int mask; |
2903 | snd_pcm_uframes_t avail; | |
2904 | ||
2905 | pcm_file = file->private_data; | |
2906 | ||
2907 | substream = pcm_file->substream; | |
2908 | snd_assert(substream != NULL, return -ENXIO); | |
2909 | runtime = substream->runtime; | |
2910 | ||
2911 | poll_wait(file, &runtime->sleep, wait); | |
2912 | ||
2913 | snd_pcm_stream_lock_irq(substream); | |
2914 | avail = snd_pcm_playback_avail(runtime); | |
2915 | switch (runtime->status->state) { | |
2916 | case SNDRV_PCM_STATE_RUNNING: | |
2917 | case SNDRV_PCM_STATE_PREPARED: | |
2918 | case SNDRV_PCM_STATE_PAUSED: | |
2919 | if (avail >= runtime->control->avail_min) { | |
2920 | mask = POLLOUT | POLLWRNORM; | |
2921 | break; | |
2922 | } | |
2923 | /* Fall through */ | |
2924 | case SNDRV_PCM_STATE_DRAINING: | |
2925 | mask = 0; | |
2926 | break; | |
2927 | default: | |
2928 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2929 | break; | |
2930 | } | |
2931 | snd_pcm_stream_unlock_irq(substream); | |
2932 | return mask; | |
2933 | } | |
2934 | ||
2935 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2936 | { | |
877211f5 TI |
2937 | struct snd_pcm_file *pcm_file; |
2938 | struct snd_pcm_substream *substream; | |
2939 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2940 | unsigned int mask; |
2941 | snd_pcm_uframes_t avail; | |
2942 | ||
2943 | pcm_file = file->private_data; | |
2944 | ||
2945 | substream = pcm_file->substream; | |
2946 | snd_assert(substream != NULL, return -ENXIO); | |
2947 | runtime = substream->runtime; | |
2948 | ||
2949 | poll_wait(file, &runtime->sleep, wait); | |
2950 | ||
2951 | snd_pcm_stream_lock_irq(substream); | |
2952 | avail = snd_pcm_capture_avail(runtime); | |
2953 | switch (runtime->status->state) { | |
2954 | case SNDRV_PCM_STATE_RUNNING: | |
2955 | case SNDRV_PCM_STATE_PREPARED: | |
2956 | case SNDRV_PCM_STATE_PAUSED: | |
2957 | if (avail >= runtime->control->avail_min) { | |
2958 | mask = POLLIN | POLLRDNORM; | |
2959 | break; | |
2960 | } | |
2961 | mask = 0; | |
2962 | break; | |
2963 | case SNDRV_PCM_STATE_DRAINING: | |
2964 | if (avail > 0) { | |
2965 | mask = POLLIN | POLLRDNORM; | |
2966 | break; | |
2967 | } | |
2968 | /* Fall through */ | |
2969 | default: | |
2970 | mask = POLLIN | POLLRDNORM | POLLERR; | |
2971 | break; | |
2972 | } | |
2973 | snd_pcm_stream_unlock_irq(substream); | |
2974 | return mask; | |
2975 | } | |
2976 | ||
2977 | /* | |
2978 | * mmap support | |
2979 | */ | |
2980 | ||
2981 | /* | |
2982 | * Only on coherent architectures, we can mmap the status and the control records | |
2983 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
2984 | */ | |
2985 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
2986 | /* | |
2987 | * mmap status record | |
2988 | */ | |
3ad5afcd NP |
2989 | static int snd_pcm_mmap_status_fault(struct vm_area_struct *area, |
2990 | struct vm_fault *vmf) | |
1da177e4 | 2991 | { |
877211f5 TI |
2992 | struct snd_pcm_substream *substream = area->vm_private_data; |
2993 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2994 | |
2995 | if (substream == NULL) | |
3ad5afcd | 2996 | return VM_FAULT_SIGBUS; |
1da177e4 | 2997 | runtime = substream->runtime; |
3ad5afcd NP |
2998 | vmf->page = virt_to_page(runtime->status); |
2999 | get_page(vmf->page); | |
3000 | return 0; | |
1da177e4 LT |
3001 | } |
3002 | ||
3003 | static struct vm_operations_struct snd_pcm_vm_ops_status = | |
3004 | { | |
3ad5afcd | 3005 | .fault = snd_pcm_mmap_status_fault, |
1da177e4 LT |
3006 | }; |
3007 | ||
877211f5 | 3008 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3009 | struct vm_area_struct *area) |
3010 | { | |
877211f5 | 3011 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3012 | long size; |
3013 | if (!(area->vm_flags & VM_READ)) | |
3014 | return -EINVAL; | |
3015 | runtime = substream->runtime; | |
3016 | snd_assert(runtime != NULL, return -EAGAIN); | |
3017 | size = area->vm_end - area->vm_start; | |
877211f5 | 3018 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3019 | return -EINVAL; |
3020 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3021 | area->vm_private_data = substream; | |
3022 | area->vm_flags |= VM_RESERVED; | |
3023 | return 0; | |
3024 | } | |
3025 | ||
3026 | /* | |
3027 | * mmap control record | |
3028 | */ | |
3ad5afcd NP |
3029 | static int snd_pcm_mmap_control_fault(struct vm_area_struct *area, |
3030 | struct vm_fault *vmf) | |
1da177e4 | 3031 | { |
877211f5 TI |
3032 | struct snd_pcm_substream *substream = area->vm_private_data; |
3033 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3034 | |
3035 | if (substream == NULL) | |
3ad5afcd | 3036 | return VM_FAULT_SIGBUS; |
1da177e4 | 3037 | runtime = substream->runtime; |
3ad5afcd NP |
3038 | vmf->page = virt_to_page(runtime->control); |
3039 | get_page(vmf->page); | |
3040 | return 0; | |
1da177e4 LT |
3041 | } |
3042 | ||
3043 | static struct vm_operations_struct snd_pcm_vm_ops_control = | |
3044 | { | |
3ad5afcd | 3045 | .fault = snd_pcm_mmap_control_fault, |
1da177e4 LT |
3046 | }; |
3047 | ||
877211f5 | 3048 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3049 | struct vm_area_struct *area) |
3050 | { | |
877211f5 | 3051 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3052 | long size; |
3053 | if (!(area->vm_flags & VM_READ)) | |
3054 | return -EINVAL; | |
3055 | runtime = substream->runtime; | |
3056 | snd_assert(runtime != NULL, return -EAGAIN); | |
3057 | size = area->vm_end - area->vm_start; | |
877211f5 | 3058 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3059 | return -EINVAL; |
3060 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3061 | area->vm_private_data = substream; | |
3062 | area->vm_flags |= VM_RESERVED; | |
3063 | return 0; | |
3064 | } | |
3065 | #else /* ! coherent mmap */ | |
3066 | /* | |
3067 | * don't support mmap for status and control records. | |
3068 | */ | |
877211f5 | 3069 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3070 | struct vm_area_struct *area) |
3071 | { | |
3072 | return -ENXIO; | |
3073 | } | |
877211f5 | 3074 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3075 | struct vm_area_struct *area) |
3076 | { | |
3077 | return -ENXIO; | |
3078 | } | |
3079 | #endif /* coherent mmap */ | |
3080 | ||
3081 | /* | |
3ad5afcd | 3082 | * fault callback for mmapping a RAM page |
1da177e4 | 3083 | */ |
3ad5afcd NP |
3084 | static int snd_pcm_mmap_data_fault(struct vm_area_struct *area, |
3085 | struct vm_fault *vmf) | |
1da177e4 | 3086 | { |
877211f5 TI |
3087 | struct snd_pcm_substream *substream = area->vm_private_data; |
3088 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3089 | unsigned long offset; |
3090 | struct page * page; | |
3091 | void *vaddr; | |
3092 | size_t dma_bytes; | |
3093 | ||
3094 | if (substream == NULL) | |
3ad5afcd | 3095 | return VM_FAULT_SIGBUS; |
1da177e4 | 3096 | runtime = substream->runtime; |
3ad5afcd | 3097 | offset = vmf->pgoff << PAGE_SHIFT; |
1da177e4 LT |
3098 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
3099 | if (offset > dma_bytes - PAGE_SIZE) | |
3ad5afcd | 3100 | return VM_FAULT_SIGBUS; |
1da177e4 LT |
3101 | if (substream->ops->page) { |
3102 | page = substream->ops->page(substream, offset); | |
3ad5afcd NP |
3103 | if (!page) |
3104 | return VM_FAULT_SIGBUS; | |
1da177e4 LT |
3105 | } else { |
3106 | vaddr = runtime->dma_area + offset; | |
3107 | page = virt_to_page(vaddr); | |
3108 | } | |
b5810039 | 3109 | get_page(page); |
3ad5afcd NP |
3110 | vmf->page = page; |
3111 | return 0; | |
1da177e4 LT |
3112 | } |
3113 | ||
3114 | static struct vm_operations_struct snd_pcm_vm_ops_data = | |
3115 | { | |
3116 | .open = snd_pcm_mmap_data_open, | |
3117 | .close = snd_pcm_mmap_data_close, | |
3ad5afcd | 3118 | .fault = snd_pcm_mmap_data_fault, |
1da177e4 LT |
3119 | }; |
3120 | ||
3121 | /* | |
3122 | * mmap the DMA buffer on RAM | |
3123 | */ | |
877211f5 TI |
3124 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3125 | struct vm_area_struct *area) | |
1da177e4 LT |
3126 | { |
3127 | area->vm_ops = &snd_pcm_vm_ops_data; | |
3128 | area->vm_private_data = substream; | |
3129 | area->vm_flags |= VM_RESERVED; | |
9c323fcb | 3130 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3131 | return 0; |
3132 | } | |
3133 | ||
3134 | /* | |
3135 | * mmap the DMA buffer on I/O memory area | |
3136 | */ | |
3137 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
3138 | static struct vm_operations_struct snd_pcm_vm_ops_data_mmio = | |
3139 | { | |
3140 | .open = snd_pcm_mmap_data_open, | |
3141 | .close = snd_pcm_mmap_data_close, | |
3142 | }; | |
3143 | ||
877211f5 TI |
3144 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3145 | struct vm_area_struct *area) | |
1da177e4 LT |
3146 | { |
3147 | long size; | |
3148 | unsigned long offset; | |
3149 | ||
3150 | #ifdef pgprot_noncached | |
3151 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3152 | #endif | |
3153 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; | |
3154 | area->vm_private_data = substream; | |
3155 | area->vm_flags |= VM_IO; | |
3156 | size = area->vm_end - area->vm_start; | |
3157 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3158 | if (io_remap_pfn_range(area, area->vm_start, | |
3159 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3160 | size, area->vm_page_prot)) | |
3161 | return -EAGAIN; | |
9c323fcb | 3162 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3163 | return 0; |
3164 | } | |
e88e8ae6 TI |
3165 | |
3166 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3167 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3168 | ||
3169 | /* | |
3170 | * mmap DMA buffer | |
3171 | */ | |
877211f5 | 3172 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3173 | struct vm_area_struct *area) |
3174 | { | |
877211f5 | 3175 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3176 | long size; |
3177 | unsigned long offset; | |
3178 | size_t dma_bytes; | |
3179 | ||
3180 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3181 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3182 | return -EINVAL; | |
3183 | } else { | |
3184 | if (!(area->vm_flags & VM_READ)) | |
3185 | return -EINVAL; | |
3186 | } | |
3187 | runtime = substream->runtime; | |
3188 | snd_assert(runtime != NULL, return -EAGAIN); | |
3189 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
3190 | return -EBADFD; | |
3191 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3192 | return -ENXIO; | |
3193 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3194 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3195 | return -EINVAL; | |
3196 | size = area->vm_end - area->vm_start; | |
3197 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3198 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3199 | if ((size_t)size > dma_bytes) | |
3200 | return -EINVAL; | |
3201 | if (offset > dma_bytes - size) | |
3202 | return -EINVAL; | |
3203 | ||
3204 | if (substream->ops->mmap) | |
3205 | return substream->ops->mmap(substream, area); | |
3206 | else | |
3207 | return snd_pcm_default_mmap(substream, area); | |
3208 | } | |
3209 | ||
e88e8ae6 TI |
3210 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3211 | ||
1da177e4 LT |
3212 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3213 | { | |
877211f5 TI |
3214 | struct snd_pcm_file * pcm_file; |
3215 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3216 | unsigned long offset; |
3217 | ||
3218 | pcm_file = file->private_data; | |
3219 | substream = pcm_file->substream; | |
3220 | snd_assert(substream != NULL, return -ENXIO); | |
3221 | ||
3222 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3223 | switch (offset) { | |
3224 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
548a648b | 3225 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3226 | return -ENXIO; |
3227 | return snd_pcm_mmap_status(substream, file, area); | |
3228 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
548a648b | 3229 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3230 | return -ENXIO; |
3231 | return snd_pcm_mmap_control(substream, file, area); | |
3232 | default: | |
3233 | return snd_pcm_mmap_data(substream, file, area); | |
3234 | } | |
3235 | return 0; | |
3236 | } | |
3237 | ||
3238 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3239 | { | |
877211f5 TI |
3240 | struct snd_pcm_file * pcm_file; |
3241 | struct snd_pcm_substream *substream; | |
3242 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3243 | int err; |
3244 | ||
3245 | pcm_file = file->private_data; | |
3246 | substream = pcm_file->substream; | |
3247 | snd_assert(substream != NULL, return -ENXIO); | |
3248 | runtime = substream->runtime; | |
3249 | ||
3250 | err = fasync_helper(fd, file, on, &runtime->fasync); | |
3251 | if (err < 0) | |
3252 | return err; | |
3253 | return 0; | |
3254 | } | |
3255 | ||
3256 | /* | |
3257 | * ioctl32 compat | |
3258 | */ | |
3259 | #ifdef CONFIG_COMPAT | |
3260 | #include "pcm_compat.c" | |
3261 | #else | |
3262 | #define snd_pcm_ioctl_compat NULL | |
3263 | #endif | |
3264 | ||
3265 | /* | |
3266 | * To be removed helpers to keep binary compatibility | |
3267 | */ | |
3268 | ||
59d48582 | 3269 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3270 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3271 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3272 | ||
877211f5 TI |
3273 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3274 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3275 | { |
3276 | unsigned int i; | |
3277 | ||
3278 | memset(params, 0, sizeof(*params)); | |
3279 | params->flags = oparams->flags; | |
3280 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3281 | params->masks[i].bits[0] = oparams->masks[i]; | |
3282 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3283 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3284 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3285 | params->info = oparams->info; | |
3286 | params->msbits = oparams->msbits; | |
3287 | params->rate_num = oparams->rate_num; | |
3288 | params->rate_den = oparams->rate_den; | |
3289 | params->fifo_size = oparams->fifo_size; | |
3290 | } | |
3291 | ||
877211f5 TI |
3292 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3293 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3294 | { |
3295 | unsigned int i; | |
3296 | ||
3297 | memset(oparams, 0, sizeof(*oparams)); | |
3298 | oparams->flags = params->flags; | |
3299 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3300 | oparams->masks[i] = params->masks[i].bits[0]; | |
3301 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3302 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3303 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3304 | oparams->info = params->info; | |
3305 | oparams->msbits = params->msbits; | |
3306 | oparams->rate_num = params->rate_num; | |
3307 | oparams->rate_den = params->rate_den; | |
3308 | oparams->fifo_size = params->fifo_size; | |
3309 | } | |
3310 | ||
877211f5 TI |
3311 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3312 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3313 | { |
877211f5 TI |
3314 | struct snd_pcm_hw_params *params; |
3315 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3316 | int err; |
3317 | ||
3318 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3319 | if (!params) { | |
3320 | err = -ENOMEM; | |
3321 | goto out; | |
3322 | } | |
3323 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3324 | if (!oparams) { | |
3325 | err = -ENOMEM; | |
3326 | goto out; | |
3327 | } | |
3328 | ||
3329 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3330 | err = -EFAULT; | |
3331 | goto out; | |
3332 | } | |
3333 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3334 | err = snd_pcm_hw_refine(substream, params); | |
3335 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3336 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3337 | if (!err) | |
3338 | err = -EFAULT; | |
3339 | } | |
3340 | out: | |
3341 | kfree(params); | |
3342 | kfree(oparams); | |
3343 | return err; | |
3344 | } | |
3345 | ||
877211f5 TI |
3346 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3347 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3348 | { |
877211f5 TI |
3349 | struct snd_pcm_hw_params *params; |
3350 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3351 | int err; |
3352 | ||
3353 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3354 | if (!params) { | |
3355 | err = -ENOMEM; | |
3356 | goto out; | |
3357 | } | |
3358 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3359 | if (!oparams) { | |
3360 | err = -ENOMEM; | |
3361 | goto out; | |
3362 | } | |
3363 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3364 | err = -EFAULT; | |
3365 | goto out; | |
3366 | } | |
3367 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3368 | err = snd_pcm_hw_params(substream, params); | |
3369 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3370 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3371 | if (!err) | |
3372 | err = -EFAULT; | |
3373 | } | |
3374 | out: | |
3375 | kfree(params); | |
3376 | kfree(oparams); | |
3377 | return err; | |
3378 | } | |
59d48582 | 3379 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 LT |
3380 | |
3381 | /* | |
3382 | * Register section | |
3383 | */ | |
3384 | ||
9c2e08c5 | 3385 | const struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3386 | { |
2af677fc CL |
3387 | .owner = THIS_MODULE, |
3388 | .write = snd_pcm_write, | |
ee0b3e67 | 3389 | .aio_write = snd_pcm_aio_write, |
f87135f5 | 3390 | .open = snd_pcm_playback_open, |
2af677fc CL |
3391 | .release = snd_pcm_release, |
3392 | .poll = snd_pcm_playback_poll, | |
3393 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3394 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3395 | .mmap = snd_pcm_mmap, | |
3396 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3397 | }, |
3398 | { | |
2af677fc CL |
3399 | .owner = THIS_MODULE, |
3400 | .read = snd_pcm_read, | |
ee0b3e67 | 3401 | .aio_read = snd_pcm_aio_read, |
f87135f5 | 3402 | .open = snd_pcm_capture_open, |
2af677fc CL |
3403 | .release = snd_pcm_release, |
3404 | .poll = snd_pcm_capture_poll, | |
3405 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3406 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3407 | .mmap = snd_pcm_mmap, | |
3408 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3409 | } |
3410 | }; |