Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Digital Audio (PCM) abstract layer | |
3 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> | |
4 | * | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <sound/driver.h> | |
23 | #include <linux/mm.h> | |
1da177e4 LT |
24 | #include <linux/file.h> |
25 | #include <linux/slab.h> | |
26 | #include <linux/time.h> | |
9442e691 | 27 | #include <linux/latency.h> |
1da177e4 LT |
28 | #include <linux/uio.h> |
29 | #include <sound/core.h> | |
30 | #include <sound/control.h> | |
31 | #include <sound/info.h> | |
32 | #include <sound/pcm.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/timer.h> | |
35 | #include <sound/minors.h> | |
36 | #include <asm/io.h> | |
37 | ||
38 | /* | |
39 | * Compatibility | |
40 | */ | |
41 | ||
877211f5 | 42 | struct snd_pcm_hw_params_old { |
1da177e4 LT |
43 | unsigned int flags; |
44 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - | |
45 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; | |
877211f5 | 46 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
1da177e4 LT |
47 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS + 1]; |
48 | unsigned int rmask; | |
49 | unsigned int cmask; | |
50 | unsigned int info; | |
51 | unsigned int msbits; | |
52 | unsigned int rate_num; | |
53 | unsigned int rate_den; | |
877211f5 | 54 | snd_pcm_uframes_t fifo_size; |
1da177e4 LT |
55 | unsigned char reserved[64]; |
56 | }; | |
57 | ||
59d48582 | 58 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
877211f5 TI |
59 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
60 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) | |
1da177e4 | 61 | |
877211f5 TI |
62 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
63 | struct snd_pcm_hw_params_old __user * _oparams); | |
64 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, | |
65 | struct snd_pcm_hw_params_old __user * _oparams); | |
59d48582 | 66 | #endif |
f87135f5 | 67 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream); |
1da177e4 LT |
68 | |
69 | /* | |
70 | * | |
71 | */ | |
72 | ||
73 | DEFINE_RWLOCK(snd_pcm_link_rwlock); | |
e88e8ae6 | 74 | EXPORT_SYMBOL(snd_pcm_link_rwlock); |
1da177e4 | 75 | |
e88e8ae6 | 76 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
1da177e4 LT |
77 | |
78 | static inline mm_segment_t snd_enter_user(void) | |
79 | { | |
80 | mm_segment_t fs = get_fs(); | |
81 | set_fs(get_ds()); | |
82 | return fs; | |
83 | } | |
84 | ||
85 | static inline void snd_leave_user(mm_segment_t fs) | |
86 | { | |
87 | set_fs(fs); | |
88 | } | |
89 | ||
90 | ||
91 | ||
877211f5 | 92 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
1da177e4 | 93 | { |
877211f5 TI |
94 | struct snd_pcm_runtime *runtime; |
95 | struct snd_pcm *pcm = substream->pcm; | |
96 | struct snd_pcm_str *pstr = substream->pstr; | |
1da177e4 LT |
97 | |
98 | snd_assert(substream != NULL, return -ENXIO); | |
99 | memset(info, 0, sizeof(*info)); | |
100 | info->card = pcm->card->number; | |
101 | info->device = pcm->device; | |
102 | info->stream = substream->stream; | |
103 | info->subdevice = substream->number; | |
104 | strlcpy(info->id, pcm->id, sizeof(info->id)); | |
105 | strlcpy(info->name, pcm->name, sizeof(info->name)); | |
106 | info->dev_class = pcm->dev_class; | |
107 | info->dev_subclass = pcm->dev_subclass; | |
108 | info->subdevices_count = pstr->substream_count; | |
109 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; | |
110 | strlcpy(info->subname, substream->name, sizeof(info->subname)); | |
111 | runtime = substream->runtime; | |
112 | /* AB: FIXME!!! This is definitely nonsense */ | |
113 | if (runtime) { | |
114 | info->sync = runtime->sync; | |
115 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); | |
116 | } | |
117 | return 0; | |
118 | } | |
119 | ||
877211f5 TI |
120 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
121 | struct snd_pcm_info __user * _info) | |
1da177e4 | 122 | { |
877211f5 | 123 | struct snd_pcm_info *info; |
1da177e4 LT |
124 | int err; |
125 | ||
126 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
127 | if (! info) | |
128 | return -ENOMEM; | |
129 | err = snd_pcm_info(substream, info); | |
130 | if (err >= 0) { | |
131 | if (copy_to_user(_info, info, sizeof(*info))) | |
132 | err = -EFAULT; | |
133 | } | |
134 | kfree(info); | |
135 | return err; | |
136 | } | |
137 | ||
138 | #undef RULES_DEBUG | |
139 | ||
140 | #ifdef RULES_DEBUG | |
141 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v | |
142 | char *snd_pcm_hw_param_names[] = { | |
143 | HW_PARAM(ACCESS), | |
144 | HW_PARAM(FORMAT), | |
145 | HW_PARAM(SUBFORMAT), | |
146 | HW_PARAM(SAMPLE_BITS), | |
147 | HW_PARAM(FRAME_BITS), | |
148 | HW_PARAM(CHANNELS), | |
149 | HW_PARAM(RATE), | |
150 | HW_PARAM(PERIOD_TIME), | |
151 | HW_PARAM(PERIOD_SIZE), | |
152 | HW_PARAM(PERIOD_BYTES), | |
153 | HW_PARAM(PERIODS), | |
154 | HW_PARAM(BUFFER_TIME), | |
155 | HW_PARAM(BUFFER_SIZE), | |
156 | HW_PARAM(BUFFER_BYTES), | |
157 | HW_PARAM(TICK_TIME), | |
158 | }; | |
159 | #endif | |
160 | ||
877211f5 TI |
161 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
162 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
163 | { |
164 | unsigned int k; | |
877211f5 TI |
165 | struct snd_pcm_hardware *hw; |
166 | struct snd_interval *i = NULL; | |
167 | struct snd_mask *m = NULL; | |
168 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; | |
1da177e4 LT |
169 | unsigned int rstamps[constrs->rules_num]; |
170 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; | |
171 | unsigned int stamp = 2; | |
172 | int changed, again; | |
173 | ||
174 | params->info = 0; | |
175 | params->fifo_size = 0; | |
176 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) | |
177 | params->msbits = 0; | |
178 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { | |
179 | params->rate_num = 0; | |
180 | params->rate_den = 0; | |
181 | } | |
182 | ||
183 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
184 | m = hw_param_mask(params, k); | |
185 | if (snd_mask_empty(m)) | |
186 | return -EINVAL; | |
187 | if (!(params->rmask & (1 << k))) | |
188 | continue; | |
189 | #ifdef RULES_DEBUG | |
190 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
191 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
192 | #endif | |
193 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); | |
194 | #ifdef RULES_DEBUG | |
195 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
196 | #endif | |
197 | if (changed) | |
198 | params->cmask |= 1 << k; | |
199 | if (changed < 0) | |
200 | return changed; | |
201 | } | |
202 | ||
203 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
204 | i = hw_param_interval(params, k); | |
205 | if (snd_interval_empty(i)) | |
206 | return -EINVAL; | |
207 | if (!(params->rmask & (1 << k))) | |
208 | continue; | |
209 | #ifdef RULES_DEBUG | |
210 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
211 | if (i->empty) | |
212 | printk("empty"); | |
213 | else | |
214 | printk("%c%u %u%c", | |
215 | i->openmin ? '(' : '[', i->min, | |
216 | i->max, i->openmax ? ')' : ']'); | |
217 | printk(" -> "); | |
218 | #endif | |
219 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); | |
220 | #ifdef RULES_DEBUG | |
221 | if (i->empty) | |
222 | printk("empty\n"); | |
223 | else | |
224 | printk("%c%u %u%c\n", | |
225 | i->openmin ? '(' : '[', i->min, | |
226 | i->max, i->openmax ? ')' : ']'); | |
227 | #endif | |
228 | if (changed) | |
229 | params->cmask |= 1 << k; | |
230 | if (changed < 0) | |
231 | return changed; | |
232 | } | |
233 | ||
234 | for (k = 0; k < constrs->rules_num; k++) | |
235 | rstamps[k] = 0; | |
236 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) | |
237 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; | |
238 | do { | |
239 | again = 0; | |
240 | for (k = 0; k < constrs->rules_num; k++) { | |
877211f5 | 241 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
1da177e4 LT |
242 | unsigned int d; |
243 | int doit = 0; | |
244 | if (r->cond && !(r->cond & params->flags)) | |
245 | continue; | |
246 | for (d = 0; r->deps[d] >= 0; d++) { | |
247 | if (vstamps[r->deps[d]] > rstamps[k]) { | |
248 | doit = 1; | |
249 | break; | |
250 | } | |
251 | } | |
252 | if (!doit) | |
253 | continue; | |
254 | #ifdef RULES_DEBUG | |
255 | printk("Rule %d [%p]: ", k, r->func); | |
256 | if (r->var >= 0) { | |
257 | printk("%s = ", snd_pcm_hw_param_names[r->var]); | |
258 | if (hw_is_mask(r->var)) { | |
259 | m = hw_param_mask(params, r->var); | |
260 | printk("%x", *m->bits); | |
261 | } else { | |
262 | i = hw_param_interval(params, r->var); | |
263 | if (i->empty) | |
264 | printk("empty"); | |
265 | else | |
266 | printk("%c%u %u%c", | |
267 | i->openmin ? '(' : '[', i->min, | |
268 | i->max, i->openmax ? ')' : ']'); | |
269 | } | |
270 | } | |
271 | #endif | |
272 | changed = r->func(params, r); | |
273 | #ifdef RULES_DEBUG | |
274 | if (r->var >= 0) { | |
275 | printk(" -> "); | |
276 | if (hw_is_mask(r->var)) | |
277 | printk("%x", *m->bits); | |
278 | else { | |
279 | if (i->empty) | |
280 | printk("empty"); | |
281 | else | |
282 | printk("%c%u %u%c", | |
283 | i->openmin ? '(' : '[', i->min, | |
284 | i->max, i->openmax ? ')' : ']'); | |
285 | } | |
286 | } | |
287 | printk("\n"); | |
288 | #endif | |
289 | rstamps[k] = stamp; | |
290 | if (changed && r->var >= 0) { | |
291 | params->cmask |= (1 << r->var); | |
292 | vstamps[r->var] = stamp; | |
293 | again = 1; | |
294 | } | |
295 | if (changed < 0) | |
296 | return changed; | |
297 | stamp++; | |
298 | } | |
299 | } while (again); | |
300 | if (!params->msbits) { | |
301 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); | |
302 | if (snd_interval_single(i)) | |
303 | params->msbits = snd_interval_value(i); | |
304 | } | |
305 | ||
306 | if (!params->rate_den) { | |
307 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
308 | if (snd_interval_single(i)) { | |
309 | params->rate_num = snd_interval_value(i); | |
310 | params->rate_den = 1; | |
311 | } | |
312 | } | |
313 | ||
314 | hw = &substream->runtime->hw; | |
315 | if (!params->info) | |
316 | params->info = hw->info; | |
317 | if (!params->fifo_size) | |
318 | params->fifo_size = hw->fifo_size; | |
319 | params->rmask = 0; | |
320 | return 0; | |
321 | } | |
322 | ||
e88e8ae6 TI |
323 | EXPORT_SYMBOL(snd_pcm_hw_refine); |
324 | ||
877211f5 TI |
325 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
326 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 327 | { |
877211f5 | 328 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
329 | int err; |
330 | ||
331 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
332 | if (!params) { | |
333 | err = -ENOMEM; | |
334 | goto out; | |
335 | } | |
336 | if (copy_from_user(params, _params, sizeof(*params))) { | |
337 | err = -EFAULT; | |
338 | goto out; | |
339 | } | |
340 | err = snd_pcm_hw_refine(substream, params); | |
341 | if (copy_to_user(_params, params, sizeof(*params))) { | |
342 | if (!err) | |
343 | err = -EFAULT; | |
344 | } | |
345 | out: | |
346 | kfree(params); | |
347 | return err; | |
348 | } | |
349 | ||
9442e691 TI |
350 | static int period_to_usecs(struct snd_pcm_runtime *runtime) |
351 | { | |
352 | int usecs; | |
353 | ||
354 | if (! runtime->rate) | |
355 | return -1; /* invalid */ | |
356 | ||
357 | /* take 75% of period time as the deadline */ | |
358 | usecs = (750000 / runtime->rate) * runtime->period_size; | |
359 | usecs += ((750000 % runtime->rate) * runtime->period_size) / | |
360 | runtime->rate; | |
361 | ||
362 | return usecs; | |
363 | } | |
364 | ||
877211f5 TI |
365 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
366 | struct snd_pcm_hw_params *params) | |
1da177e4 | 367 | { |
877211f5 | 368 | struct snd_pcm_runtime *runtime; |
9442e691 | 369 | int err, usecs; |
1da177e4 LT |
370 | unsigned int bits; |
371 | snd_pcm_uframes_t frames; | |
372 | ||
373 | snd_assert(substream != NULL, return -ENXIO); | |
374 | runtime = substream->runtime; | |
375 | snd_assert(runtime != NULL, return -ENXIO); | |
376 | snd_pcm_stream_lock_irq(substream); | |
377 | switch (runtime->status->state) { | |
378 | case SNDRV_PCM_STATE_OPEN: | |
379 | case SNDRV_PCM_STATE_SETUP: | |
380 | case SNDRV_PCM_STATE_PREPARED: | |
381 | break; | |
382 | default: | |
383 | snd_pcm_stream_unlock_irq(substream); | |
384 | return -EBADFD; | |
385 | } | |
386 | snd_pcm_stream_unlock_irq(substream); | |
387 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
388 | if (!substream->oss.oss) | |
389 | #endif | |
9c323fcb | 390 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
391 | return -EBADFD; |
392 | ||
393 | params->rmask = ~0U; | |
394 | err = snd_pcm_hw_refine(substream, params); | |
395 | if (err < 0) | |
396 | goto _error; | |
397 | ||
398 | err = snd_pcm_hw_params_choose(substream, params); | |
399 | if (err < 0) | |
400 | goto _error; | |
401 | ||
402 | if (substream->ops->hw_params != NULL) { | |
403 | err = substream->ops->hw_params(substream, params); | |
404 | if (err < 0) | |
405 | goto _error; | |
406 | } | |
407 | ||
408 | runtime->access = params_access(params); | |
409 | runtime->format = params_format(params); | |
410 | runtime->subformat = params_subformat(params); | |
411 | runtime->channels = params_channels(params); | |
412 | runtime->rate = params_rate(params); | |
413 | runtime->period_size = params_period_size(params); | |
414 | runtime->periods = params_periods(params); | |
415 | runtime->buffer_size = params_buffer_size(params); | |
416 | runtime->tick_time = params_tick_time(params); | |
417 | runtime->info = params->info; | |
418 | runtime->rate_num = params->rate_num; | |
419 | runtime->rate_den = params->rate_den; | |
420 | ||
421 | bits = snd_pcm_format_physical_width(runtime->format); | |
422 | runtime->sample_bits = bits; | |
423 | bits *= runtime->channels; | |
424 | runtime->frame_bits = bits; | |
425 | frames = 1; | |
426 | while (bits % 8 != 0) { | |
427 | bits *= 2; | |
428 | frames *= 2; | |
429 | } | |
430 | runtime->byte_align = bits / 8; | |
431 | runtime->min_align = frames; | |
432 | ||
433 | /* Default sw params */ | |
434 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
435 | runtime->period_step = 1; | |
436 | runtime->sleep_min = 0; | |
437 | runtime->control->avail_min = runtime->period_size; | |
438 | runtime->xfer_align = runtime->period_size; | |
439 | runtime->start_threshold = 1; | |
440 | runtime->stop_threshold = runtime->buffer_size; | |
441 | runtime->silence_threshold = 0; | |
442 | runtime->silence_size = 0; | |
443 | runtime->boundary = runtime->buffer_size; | |
444 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
445 | runtime->boundary *= 2; | |
446 | ||
447 | snd_pcm_timer_resolution_change(substream); | |
448 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
9442e691 TI |
449 | |
450 | remove_acceptable_latency(substream->latency_id); | |
451 | if ((usecs = period_to_usecs(runtime)) >= 0) | |
452 | set_acceptable_latency(substream->latency_id, usecs); | |
1da177e4 LT |
453 | return 0; |
454 | _error: | |
455 | /* hardware might be unuseable from this time, | |
456 | so we force application to retry to set | |
457 | the correct hardware parameter settings */ | |
458 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
459 | if (substream->ops->hw_free != NULL) | |
460 | substream->ops->hw_free(substream); | |
461 | return err; | |
462 | } | |
463 | ||
877211f5 TI |
464 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
465 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 466 | { |
877211f5 | 467 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
468 | int err; |
469 | ||
470 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
471 | if (!params) { | |
472 | err = -ENOMEM; | |
473 | goto out; | |
474 | } | |
475 | if (copy_from_user(params, _params, sizeof(*params))) { | |
476 | err = -EFAULT; | |
477 | goto out; | |
478 | } | |
479 | err = snd_pcm_hw_params(substream, params); | |
480 | if (copy_to_user(_params, params, sizeof(*params))) { | |
481 | if (!err) | |
482 | err = -EFAULT; | |
483 | } | |
484 | out: | |
485 | kfree(params); | |
486 | return err; | |
487 | } | |
488 | ||
877211f5 | 489 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 490 | { |
877211f5 | 491 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
492 | int result = 0; |
493 | ||
494 | snd_assert(substream != NULL, return -ENXIO); | |
495 | runtime = substream->runtime; | |
496 | snd_assert(runtime != NULL, return -ENXIO); | |
497 | snd_pcm_stream_lock_irq(substream); | |
498 | switch (runtime->status->state) { | |
499 | case SNDRV_PCM_STATE_SETUP: | |
500 | case SNDRV_PCM_STATE_PREPARED: | |
501 | break; | |
502 | default: | |
503 | snd_pcm_stream_unlock_irq(substream); | |
504 | return -EBADFD; | |
505 | } | |
506 | snd_pcm_stream_unlock_irq(substream); | |
9c323fcb | 507 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
508 | return -EBADFD; |
509 | if (substream->ops->hw_free) | |
510 | result = substream->ops->hw_free(substream); | |
511 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
9442e691 | 512 | remove_acceptable_latency(substream->latency_id); |
1da177e4 LT |
513 | return result; |
514 | } | |
515 | ||
877211f5 TI |
516 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
517 | struct snd_pcm_sw_params *params) | |
1da177e4 | 518 | { |
877211f5 | 519 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
520 | |
521 | snd_assert(substream != NULL, return -ENXIO); | |
522 | runtime = substream->runtime; | |
523 | snd_assert(runtime != NULL, return -ENXIO); | |
524 | snd_pcm_stream_lock_irq(substream); | |
525 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
526 | snd_pcm_stream_unlock_irq(substream); | |
527 | return -EBADFD; | |
528 | } | |
529 | snd_pcm_stream_unlock_irq(substream); | |
530 | ||
531 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
532 | return -EINVAL; | |
533 | if (params->avail_min == 0) | |
534 | return -EINVAL; | |
535 | if (params->xfer_align == 0 || | |
536 | params->xfer_align % runtime->min_align != 0) | |
537 | return -EINVAL; | |
538 | if (params->silence_size >= runtime->boundary) { | |
539 | if (params->silence_threshold != 0) | |
540 | return -EINVAL; | |
541 | } else { | |
542 | if (params->silence_size > params->silence_threshold) | |
543 | return -EINVAL; | |
544 | if (params->silence_threshold > runtime->buffer_size) | |
545 | return -EINVAL; | |
546 | } | |
547 | snd_pcm_stream_lock_irq(substream); | |
548 | runtime->tstamp_mode = params->tstamp_mode; | |
549 | runtime->sleep_min = params->sleep_min; | |
550 | runtime->period_step = params->period_step; | |
551 | runtime->control->avail_min = params->avail_min; | |
552 | runtime->start_threshold = params->start_threshold; | |
553 | runtime->stop_threshold = params->stop_threshold; | |
554 | runtime->silence_threshold = params->silence_threshold; | |
555 | runtime->silence_size = params->silence_size; | |
556 | runtime->xfer_align = params->xfer_align; | |
557 | params->boundary = runtime->boundary; | |
558 | if (snd_pcm_running(substream)) { | |
559 | if (runtime->sleep_min) | |
560 | snd_pcm_tick_prepare(substream); | |
561 | else | |
562 | snd_pcm_tick_set(substream, 0); | |
563 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
564 | runtime->silence_size > 0) | |
565 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
566 | wake_up(&runtime->sleep); | |
567 | } | |
568 | snd_pcm_stream_unlock_irq(substream); | |
569 | return 0; | |
570 | } | |
571 | ||
877211f5 TI |
572 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
573 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 574 | { |
877211f5 | 575 | struct snd_pcm_sw_params params; |
1da177e4 LT |
576 | int err; |
577 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
578 | return -EFAULT; | |
579 | err = snd_pcm_sw_params(substream, ¶ms); | |
580 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
581 | return -EFAULT; | |
582 | return err; | |
583 | } | |
584 | ||
877211f5 TI |
585 | int snd_pcm_status(struct snd_pcm_substream *substream, |
586 | struct snd_pcm_status *status) | |
1da177e4 | 587 | { |
877211f5 | 588 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
589 | |
590 | snd_pcm_stream_lock_irq(substream); | |
591 | status->state = runtime->status->state; | |
592 | status->suspended_state = runtime->status->suspended_state; | |
593 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
594 | goto _end; | |
595 | status->trigger_tstamp = runtime->trigger_tstamp; | |
596 | if (snd_pcm_running(substream)) { | |
597 | snd_pcm_update_hw_ptr(substream); | |
598 | if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP) | |
599 | status->tstamp = runtime->status->tstamp; | |
600 | else | |
07799e75 | 601 | getnstimeofday(&status->tstamp); |
1da177e4 | 602 | } else |
07799e75 | 603 | getnstimeofday(&status->tstamp); |
1da177e4 LT |
604 | status->appl_ptr = runtime->control->appl_ptr; |
605 | status->hw_ptr = runtime->status->hw_ptr; | |
606 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
607 | status->avail = snd_pcm_playback_avail(runtime); | |
608 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
609 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
610 | status->delay = runtime->buffer_size - status->avail; | |
611 | else | |
612 | status->delay = 0; | |
613 | } else { | |
614 | status->avail = snd_pcm_capture_avail(runtime); | |
615 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
616 | status->delay = status->avail; | |
617 | else | |
618 | status->delay = 0; | |
619 | } | |
620 | status->avail_max = runtime->avail_max; | |
621 | status->overrange = runtime->overrange; | |
622 | runtime->avail_max = 0; | |
623 | runtime->overrange = 0; | |
624 | _end: | |
625 | snd_pcm_stream_unlock_irq(substream); | |
626 | return 0; | |
627 | } | |
628 | ||
877211f5 TI |
629 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
630 | struct snd_pcm_status __user * _status) | |
1da177e4 | 631 | { |
877211f5 TI |
632 | struct snd_pcm_status status; |
633 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
634 | int res; |
635 | ||
636 | snd_assert(substream != NULL, return -ENXIO); | |
637 | runtime = substream->runtime; | |
638 | memset(&status, 0, sizeof(status)); | |
639 | res = snd_pcm_status(substream, &status); | |
640 | if (res < 0) | |
641 | return res; | |
642 | if (copy_to_user(_status, &status, sizeof(status))) | |
643 | return -EFAULT; | |
644 | return 0; | |
645 | } | |
646 | ||
877211f5 TI |
647 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
648 | struct snd_pcm_channel_info * info) | |
1da177e4 | 649 | { |
877211f5 | 650 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
651 | unsigned int channel; |
652 | ||
653 | snd_assert(substream != NULL, return -ENXIO); | |
654 | channel = info->channel; | |
655 | runtime = substream->runtime; | |
656 | snd_pcm_stream_lock_irq(substream); | |
657 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
658 | snd_pcm_stream_unlock_irq(substream); | |
659 | return -EBADFD; | |
660 | } | |
661 | snd_pcm_stream_unlock_irq(substream); | |
662 | if (channel >= runtime->channels) | |
663 | return -EINVAL; | |
664 | memset(info, 0, sizeof(*info)); | |
665 | info->channel = channel; | |
666 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
667 | } | |
668 | ||
877211f5 TI |
669 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
670 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 671 | { |
877211f5 | 672 | struct snd_pcm_channel_info info; |
1da177e4 LT |
673 | int res; |
674 | ||
675 | if (copy_from_user(&info, _info, sizeof(info))) | |
676 | return -EFAULT; | |
677 | res = snd_pcm_channel_info(substream, &info); | |
678 | if (res < 0) | |
679 | return res; | |
680 | if (copy_to_user(_info, &info, sizeof(info))) | |
681 | return -EFAULT; | |
682 | return 0; | |
683 | } | |
684 | ||
877211f5 | 685 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 686 | { |
877211f5 | 687 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
688 | if (runtime->trigger_master == NULL) |
689 | return; | |
690 | if (runtime->trigger_master == substream) { | |
07799e75 | 691 | getnstimeofday(&runtime->trigger_tstamp); |
1da177e4 LT |
692 | } else { |
693 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
694 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
695 | } | |
696 | runtime->trigger_master = NULL; | |
697 | } | |
698 | ||
699 | struct action_ops { | |
877211f5 TI |
700 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
701 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
702 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
703 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
704 | }; |
705 | ||
706 | /* | |
707 | * this functions is core for handling of linked stream | |
708 | * Note: the stream state might be changed also on failure | |
709 | * Note2: call with calling stream lock + link lock | |
710 | */ | |
711 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 712 | struct snd_pcm_substream *substream, |
1da177e4 LT |
713 | int state, int do_lock) |
714 | { | |
877211f5 TI |
715 | struct snd_pcm_substream *s = NULL; |
716 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
717 | int res = 0; |
718 | ||
ef991b95 | 719 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 720 | if (do_lock && s != substream) |
208eee2a FD |
721 | spin_lock_nested(&s->self_group.lock, |
722 | SINGLE_DEPTH_NESTING); | |
1da177e4 LT |
723 | res = ops->pre_action(s, state); |
724 | if (res < 0) | |
725 | goto _unlock; | |
726 | } | |
ef991b95 | 727 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
728 | res = ops->do_action(s, state); |
729 | if (res < 0) { | |
730 | if (ops->undo_action) { | |
ef991b95 | 731 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
732 | if (s1 == s) /* failed stream */ |
733 | break; | |
734 | ops->undo_action(s1, state); | |
735 | } | |
736 | } | |
737 | s = NULL; /* unlock all */ | |
738 | goto _unlock; | |
739 | } | |
740 | } | |
ef991b95 | 741 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
742 | ops->post_action(s, state); |
743 | } | |
744 | _unlock: | |
745 | if (do_lock) { | |
746 | /* unlock streams */ | |
ef991b95 | 747 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
748 | if (s1 != substream) |
749 | spin_unlock(&s1->self_group.lock); | |
750 | if (s1 == s) /* end */ | |
751 | break; | |
752 | } | |
753 | } | |
754 | return res; | |
755 | } | |
756 | ||
757 | /* | |
758 | * Note: call with stream lock | |
759 | */ | |
760 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 761 | struct snd_pcm_substream *substream, |
1da177e4 LT |
762 | int state) |
763 | { | |
764 | int res; | |
765 | ||
766 | res = ops->pre_action(substream, state); | |
767 | if (res < 0) | |
768 | return res; | |
769 | res = ops->do_action(substream, state); | |
770 | if (res == 0) | |
771 | ops->post_action(substream, state); | |
772 | else if (ops->undo_action) | |
773 | ops->undo_action(substream, state); | |
774 | return res; | |
775 | } | |
776 | ||
777 | /* | |
778 | * Note: call with stream lock | |
779 | */ | |
780 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 781 | struct snd_pcm_substream *substream, |
1da177e4 LT |
782 | int state) |
783 | { | |
784 | int res; | |
785 | ||
786 | if (snd_pcm_stream_linked(substream)) { | |
787 | if (!spin_trylock(&substream->group->lock)) { | |
788 | spin_unlock(&substream->self_group.lock); | |
789 | spin_lock(&substream->group->lock); | |
790 | spin_lock(&substream->self_group.lock); | |
791 | } | |
792 | res = snd_pcm_action_group(ops, substream, state, 1); | |
793 | spin_unlock(&substream->group->lock); | |
794 | } else { | |
795 | res = snd_pcm_action_single(ops, substream, state); | |
796 | } | |
797 | return res; | |
798 | } | |
799 | ||
800 | /* | |
801 | * Note: don't use any locks before | |
802 | */ | |
803 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 804 | struct snd_pcm_substream *substream, |
1da177e4 LT |
805 | int state) |
806 | { | |
807 | int res; | |
808 | ||
809 | read_lock_irq(&snd_pcm_link_rwlock); | |
810 | if (snd_pcm_stream_linked(substream)) { | |
811 | spin_lock(&substream->group->lock); | |
812 | spin_lock(&substream->self_group.lock); | |
813 | res = snd_pcm_action_group(ops, substream, state, 1); | |
814 | spin_unlock(&substream->self_group.lock); | |
815 | spin_unlock(&substream->group->lock); | |
816 | } else { | |
817 | spin_lock(&substream->self_group.lock); | |
818 | res = snd_pcm_action_single(ops, substream, state); | |
819 | spin_unlock(&substream->self_group.lock); | |
820 | } | |
821 | read_unlock_irq(&snd_pcm_link_rwlock); | |
822 | return res; | |
823 | } | |
824 | ||
825 | /* | |
826 | */ | |
827 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 828 | struct snd_pcm_substream *substream, |
1da177e4 LT |
829 | int state) |
830 | { | |
831 | int res; | |
832 | ||
833 | down_read(&snd_pcm_link_rwsem); | |
834 | if (snd_pcm_stream_linked(substream)) | |
835 | res = snd_pcm_action_group(ops, substream, state, 0); | |
836 | else | |
837 | res = snd_pcm_action_single(ops, substream, state); | |
838 | up_read(&snd_pcm_link_rwsem); | |
839 | return res; | |
840 | } | |
841 | ||
842 | /* | |
843 | * start callbacks | |
844 | */ | |
877211f5 | 845 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 846 | { |
877211f5 | 847 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
848 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
849 | return -EBADFD; | |
850 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
851 | !snd_pcm_playback_data(substream)) | |
852 | return -EPIPE; | |
853 | runtime->trigger_master = substream; | |
854 | return 0; | |
855 | } | |
856 | ||
877211f5 | 857 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
858 | { |
859 | if (substream->runtime->trigger_master != substream) | |
860 | return 0; | |
861 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
862 | } | |
863 | ||
877211f5 | 864 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
865 | { |
866 | if (substream->runtime->trigger_master == substream) | |
867 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
868 | } | |
869 | ||
877211f5 | 870 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 871 | { |
877211f5 | 872 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
873 | snd_pcm_trigger_tstamp(substream); |
874 | runtime->status->state = state; | |
875 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
876 | runtime->silence_size > 0) | |
877 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
878 | if (runtime->sleep_min) | |
879 | snd_pcm_tick_prepare(substream); | |
880 | if (substream->timer) | |
877211f5 TI |
881 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
882 | &runtime->trigger_tstamp); | |
1da177e4 LT |
883 | } |
884 | ||
885 | static struct action_ops snd_pcm_action_start = { | |
886 | .pre_action = snd_pcm_pre_start, | |
887 | .do_action = snd_pcm_do_start, | |
888 | .undo_action = snd_pcm_undo_start, | |
889 | .post_action = snd_pcm_post_start | |
890 | }; | |
891 | ||
892 | /** | |
893 | * snd_pcm_start | |
df8db936 | 894 | * @substream: the PCM substream instance |
1da177e4 LT |
895 | * |
896 | * Start all linked streams. | |
897 | */ | |
877211f5 | 898 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 899 | { |
877211f5 TI |
900 | return snd_pcm_action(&snd_pcm_action_start, substream, |
901 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
902 | } |
903 | ||
904 | /* | |
905 | * stop callbacks | |
906 | */ | |
877211f5 | 907 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 908 | { |
877211f5 | 909 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
910 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
911 | return -EBADFD; | |
912 | runtime->trigger_master = substream; | |
913 | return 0; | |
914 | } | |
915 | ||
877211f5 | 916 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
917 | { |
918 | if (substream->runtime->trigger_master == substream && | |
919 | snd_pcm_running(substream)) | |
920 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
921 | return 0; /* unconditonally stop all substreams */ | |
922 | } | |
923 | ||
877211f5 | 924 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 925 | { |
877211f5 | 926 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
927 | if (runtime->status->state != state) { |
928 | snd_pcm_trigger_tstamp(substream); | |
929 | if (substream->timer) | |
877211f5 TI |
930 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
931 | &runtime->trigger_tstamp); | |
1da177e4 LT |
932 | runtime->status->state = state; |
933 | snd_pcm_tick_set(substream, 0); | |
934 | } | |
935 | wake_up(&runtime->sleep); | |
936 | } | |
937 | ||
938 | static struct action_ops snd_pcm_action_stop = { | |
939 | .pre_action = snd_pcm_pre_stop, | |
940 | .do_action = snd_pcm_do_stop, | |
941 | .post_action = snd_pcm_post_stop | |
942 | }; | |
943 | ||
944 | /** | |
945 | * snd_pcm_stop | |
df8db936 TI |
946 | * @substream: the PCM substream instance |
947 | * @state: PCM state after stopping the stream | |
1da177e4 LT |
948 | * |
949 | * Try to stop all running streams in the substream group. | |
950 | * The state of each stream is changed to the given value after that unconditionally. | |
951 | */ | |
877211f5 | 952 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
953 | { |
954 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
955 | } | |
956 | ||
e88e8ae6 TI |
957 | EXPORT_SYMBOL(snd_pcm_stop); |
958 | ||
1da177e4 LT |
959 | /** |
960 | * snd_pcm_drain_done | |
df8db936 | 961 | * @substream: the PCM substream |
1da177e4 LT |
962 | * |
963 | * Stop the DMA only when the given stream is playback. | |
964 | * The state is changed to SETUP. | |
965 | * Unlike snd_pcm_stop(), this affects only the given stream. | |
966 | */ | |
877211f5 | 967 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 968 | { |
877211f5 TI |
969 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
970 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
971 | } |
972 | ||
973 | /* | |
974 | * pause callbacks | |
975 | */ | |
877211f5 | 976 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 977 | { |
877211f5 | 978 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
979 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
980 | return -ENOSYS; | |
981 | if (push) { | |
982 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
983 | return -EBADFD; | |
984 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
985 | return -EBADFD; | |
986 | runtime->trigger_master = substream; | |
987 | return 0; | |
988 | } | |
989 | ||
877211f5 | 990 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
991 | { |
992 | if (substream->runtime->trigger_master != substream) | |
993 | return 0; | |
994 | return substream->ops->trigger(substream, | |
995 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
996 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
997 | } | |
998 | ||
877211f5 | 999 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1000 | { |
1001 | if (substream->runtime->trigger_master == substream) | |
1002 | substream->ops->trigger(substream, | |
1003 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
1004 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
1005 | } | |
1006 | ||
877211f5 | 1007 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 1008 | { |
877211f5 | 1009 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1010 | snd_pcm_trigger_tstamp(substream); |
1011 | if (push) { | |
1012 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
1013 | if (substream->timer) | |
877211f5 TI |
1014 | snd_timer_notify(substream->timer, |
1015 | SNDRV_TIMER_EVENT_MPAUSE, | |
1016 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1017 | snd_pcm_tick_set(substream, 0); |
1018 | wake_up(&runtime->sleep); | |
1019 | } else { | |
1020 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1021 | if (runtime->sleep_min) | |
1022 | snd_pcm_tick_prepare(substream); | |
1023 | if (substream->timer) | |
877211f5 TI |
1024 | snd_timer_notify(substream->timer, |
1025 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1026 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1027 | } |
1028 | } | |
1029 | ||
1030 | static struct action_ops snd_pcm_action_pause = { | |
1031 | .pre_action = snd_pcm_pre_pause, | |
1032 | .do_action = snd_pcm_do_pause, | |
1033 | .undo_action = snd_pcm_undo_pause, | |
1034 | .post_action = snd_pcm_post_pause | |
1035 | }; | |
1036 | ||
1037 | /* | |
1038 | * Push/release the pause for all linked streams. | |
1039 | */ | |
877211f5 | 1040 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1041 | { |
1042 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1043 | } | |
1044 | ||
1045 | #ifdef CONFIG_PM | |
1046 | /* suspend */ | |
1047 | ||
877211f5 | 1048 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1049 | { |
877211f5 | 1050 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1051 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1052 | return -EBUSY; | |
1053 | runtime->trigger_master = substream; | |
1054 | return 0; | |
1055 | } | |
1056 | ||
877211f5 | 1057 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1058 | { |
877211f5 | 1059 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1060 | if (runtime->trigger_master != substream) |
1061 | return 0; | |
1062 | if (! snd_pcm_running(substream)) | |
1063 | return 0; | |
1064 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1065 | return 0; /* suspend unconditionally */ | |
1066 | } | |
1067 | ||
877211f5 | 1068 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1069 | { |
877211f5 | 1070 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1071 | snd_pcm_trigger_tstamp(substream); |
1072 | if (substream->timer) | |
877211f5 TI |
1073 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1074 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1075 | runtime->status->suspended_state = runtime->status->state; |
1076 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1077 | snd_pcm_tick_set(substream, 0); | |
1078 | wake_up(&runtime->sleep); | |
1079 | } | |
1080 | ||
1081 | static struct action_ops snd_pcm_action_suspend = { | |
1082 | .pre_action = snd_pcm_pre_suspend, | |
1083 | .do_action = snd_pcm_do_suspend, | |
1084 | .post_action = snd_pcm_post_suspend | |
1085 | }; | |
1086 | ||
1087 | /** | |
1088 | * snd_pcm_suspend | |
df8db936 | 1089 | * @substream: the PCM substream |
1da177e4 LT |
1090 | * |
1091 | * Trigger SUSPEND to all linked streams. | |
1092 | * After this call, all streams are changed to SUSPENDED state. | |
1093 | */ | |
877211f5 | 1094 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1095 | { |
1096 | int err; | |
1097 | unsigned long flags; | |
1098 | ||
603bf524 TI |
1099 | if (! substream) |
1100 | return 0; | |
1101 | ||
1da177e4 LT |
1102 | snd_pcm_stream_lock_irqsave(substream, flags); |
1103 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1104 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1105 | return err; | |
1106 | } | |
1107 | ||
e88e8ae6 TI |
1108 | EXPORT_SYMBOL(snd_pcm_suspend); |
1109 | ||
1da177e4 LT |
1110 | /** |
1111 | * snd_pcm_suspend_all | |
df8db936 | 1112 | * @pcm: the PCM instance |
1da177e4 LT |
1113 | * |
1114 | * Trigger SUSPEND to all substreams in the given pcm. | |
1115 | * After this call, all streams are changed to SUSPENDED state. | |
1116 | */ | |
877211f5 | 1117 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1118 | { |
877211f5 | 1119 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1120 | int stream, err = 0; |
1121 | ||
603bf524 TI |
1122 | if (! pcm) |
1123 | return 0; | |
1124 | ||
1da177e4 | 1125 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1126 | for (substream = pcm->streams[stream].substream; |
1127 | substream; substream = substream->next) { | |
1da177e4 LT |
1128 | /* FIXME: the open/close code should lock this as well */ |
1129 | if (substream->runtime == NULL) | |
1130 | continue; | |
1131 | err = snd_pcm_suspend(substream); | |
1132 | if (err < 0 && err != -EBUSY) | |
1133 | return err; | |
1134 | } | |
1135 | } | |
1136 | return 0; | |
1137 | } | |
1138 | ||
e88e8ae6 TI |
1139 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1140 | ||
1da177e4 LT |
1141 | /* resume */ |
1142 | ||
877211f5 | 1143 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1144 | { |
877211f5 | 1145 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1146 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1147 | return -ENOSYS; | |
1148 | runtime->trigger_master = substream; | |
1149 | return 0; | |
1150 | } | |
1151 | ||
877211f5 | 1152 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1153 | { |
877211f5 | 1154 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1155 | if (runtime->trigger_master != substream) |
1156 | return 0; | |
1157 | /* DMA not running previously? */ | |
1158 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1159 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1160 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1161 | return 0; | |
1162 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1163 | } | |
1164 | ||
877211f5 | 1165 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1166 | { |
1167 | if (substream->runtime->trigger_master == substream && | |
1168 | snd_pcm_running(substream)) | |
1169 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1170 | } | |
1171 | ||
877211f5 | 1172 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1173 | { |
877211f5 | 1174 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1175 | snd_pcm_trigger_tstamp(substream); |
1176 | if (substream->timer) | |
877211f5 TI |
1177 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1178 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1179 | runtime->status->state = runtime->status->suspended_state; |
1180 | if (runtime->sleep_min) | |
1181 | snd_pcm_tick_prepare(substream); | |
1182 | } | |
1183 | ||
1184 | static struct action_ops snd_pcm_action_resume = { | |
1185 | .pre_action = snd_pcm_pre_resume, | |
1186 | .do_action = snd_pcm_do_resume, | |
1187 | .undo_action = snd_pcm_undo_resume, | |
1188 | .post_action = snd_pcm_post_resume | |
1189 | }; | |
1190 | ||
877211f5 | 1191 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1192 | { |
877211f5 | 1193 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1194 | int res; |
1195 | ||
1196 | snd_power_lock(card); | |
cbac4b0c | 1197 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1198 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1199 | snd_power_unlock(card); | |
1200 | return res; | |
1201 | } | |
1202 | ||
1203 | #else | |
1204 | ||
877211f5 | 1205 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1206 | { |
1207 | return -ENOSYS; | |
1208 | } | |
1209 | ||
1210 | #endif /* CONFIG_PM */ | |
1211 | ||
1212 | /* | |
1213 | * xrun ioctl | |
1214 | * | |
1215 | * Change the RUNNING stream(s) to XRUN state. | |
1216 | */ | |
877211f5 | 1217 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1218 | { |
877211f5 TI |
1219 | struct snd_card *card = substream->pcm->card; |
1220 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1221 | int result; |
1222 | ||
1223 | snd_power_lock(card); | |
1224 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1225 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1226 | if (result < 0) |
1227 | goto _unlock; | |
1228 | } | |
1229 | ||
1230 | snd_pcm_stream_lock_irq(substream); | |
1231 | switch (runtime->status->state) { | |
1232 | case SNDRV_PCM_STATE_XRUN: | |
1233 | result = 0; /* already there */ | |
1234 | break; | |
1235 | case SNDRV_PCM_STATE_RUNNING: | |
1236 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1237 | break; | |
1238 | default: | |
1239 | result = -EBADFD; | |
1240 | } | |
1241 | snd_pcm_stream_unlock_irq(substream); | |
1242 | _unlock: | |
1243 | snd_power_unlock(card); | |
1244 | return result; | |
1245 | } | |
1246 | ||
1247 | /* | |
1248 | * reset ioctl | |
1249 | */ | |
877211f5 | 1250 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1251 | { |
877211f5 | 1252 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1253 | switch (runtime->status->state) { |
1254 | case SNDRV_PCM_STATE_RUNNING: | |
1255 | case SNDRV_PCM_STATE_PREPARED: | |
1256 | case SNDRV_PCM_STATE_PAUSED: | |
1257 | case SNDRV_PCM_STATE_SUSPENDED: | |
1258 | return 0; | |
1259 | default: | |
1260 | return -EBADFD; | |
1261 | } | |
1262 | } | |
1263 | ||
877211f5 | 1264 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1265 | { |
877211f5 | 1266 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1267 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1268 | if (err < 0) | |
1269 | return err; | |
1270 | // snd_assert(runtime->status->hw_ptr < runtime->buffer_size, ); | |
1271 | runtime->hw_ptr_base = 0; | |
877211f5 TI |
1272 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1273 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1274 | runtime->silence_start = runtime->status->hw_ptr; |
1275 | runtime->silence_filled = 0; | |
1276 | return 0; | |
1277 | } | |
1278 | ||
877211f5 | 1279 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1280 | { |
877211f5 | 1281 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1282 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1283 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1284 | runtime->silence_size > 0) | |
1285 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1286 | } | |
1287 | ||
1288 | static struct action_ops snd_pcm_action_reset = { | |
1289 | .pre_action = snd_pcm_pre_reset, | |
1290 | .do_action = snd_pcm_do_reset, | |
1291 | .post_action = snd_pcm_post_reset | |
1292 | }; | |
1293 | ||
877211f5 | 1294 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1295 | { |
1296 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1297 | } | |
1298 | ||
1299 | /* | |
1300 | * prepare ioctl | |
1301 | */ | |
0df63e44 TI |
1302 | /* we use the second argument for updating f_flags */ |
1303 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, | |
1304 | int f_flags) | |
1da177e4 | 1305 | { |
877211f5 | 1306 | struct snd_pcm_runtime *runtime = substream->runtime; |
de1b8b93 TI |
1307 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1308 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1309 | return -EBADFD; |
1310 | if (snd_pcm_running(substream)) | |
1311 | return -EBUSY; | |
0df63e44 | 1312 | substream->f_flags = f_flags; |
1da177e4 LT |
1313 | return 0; |
1314 | } | |
1315 | ||
877211f5 | 1316 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1317 | { |
1318 | int err; | |
1319 | err = substream->ops->prepare(substream); | |
1320 | if (err < 0) | |
1321 | return err; | |
1322 | return snd_pcm_do_reset(substream, 0); | |
1323 | } | |
1324 | ||
877211f5 | 1325 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1326 | { |
877211f5 | 1327 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1328 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1329 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1330 | } | |
1331 | ||
1332 | static struct action_ops snd_pcm_action_prepare = { | |
1333 | .pre_action = snd_pcm_pre_prepare, | |
1334 | .do_action = snd_pcm_do_prepare, | |
1335 | .post_action = snd_pcm_post_prepare | |
1336 | }; | |
1337 | ||
1338 | /** | |
1339 | * snd_pcm_prepare | |
df8db936 | 1340 | * @substream: the PCM substream instance |
0df63e44 | 1341 | * @file: file to refer f_flags |
df8db936 TI |
1342 | * |
1343 | * Prepare the PCM substream to be triggerable. | |
1da177e4 | 1344 | */ |
0df63e44 TI |
1345 | static int snd_pcm_prepare(struct snd_pcm_substream *substream, |
1346 | struct file *file) | |
1da177e4 LT |
1347 | { |
1348 | int res; | |
877211f5 | 1349 | struct snd_card *card = substream->pcm->card; |
0df63e44 TI |
1350 | int f_flags; |
1351 | ||
1352 | if (file) | |
1353 | f_flags = file->f_flags; | |
1354 | else | |
1355 | f_flags = substream->f_flags; | |
1da177e4 LT |
1356 | |
1357 | snd_power_lock(card); | |
cbac4b0c | 1358 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
0df63e44 TI |
1359 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, |
1360 | substream, f_flags); | |
1da177e4 LT |
1361 | snd_power_unlock(card); |
1362 | return res; | |
1363 | } | |
1364 | ||
1365 | /* | |
1366 | * drain ioctl | |
1367 | */ | |
1368 | ||
877211f5 | 1369 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1370 | { |
0df63e44 | 1371 | if (substream->f_flags & O_NONBLOCK) |
1da177e4 LT |
1372 | return -EAGAIN; |
1373 | substream->runtime->trigger_master = substream; | |
1374 | return 0; | |
1375 | } | |
1376 | ||
877211f5 | 1377 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1378 | { |
877211f5 | 1379 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1380 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1381 | switch (runtime->status->state) { | |
1382 | case SNDRV_PCM_STATE_PREPARED: | |
1383 | /* start playback stream if possible */ | |
1384 | if (! snd_pcm_playback_empty(substream)) { | |
1385 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1386 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1387 | } | |
1388 | break; | |
1389 | case SNDRV_PCM_STATE_RUNNING: | |
1390 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1391 | break; | |
1392 | default: | |
1393 | break; | |
1394 | } | |
1395 | } else { | |
1396 | /* stop running stream */ | |
1397 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
1398 | int state = snd_pcm_capture_avail(runtime) > 0 ? | |
1399 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; | |
1400 | snd_pcm_do_stop(substream, state); | |
1401 | snd_pcm_post_stop(substream, state); | |
1402 | } | |
1403 | } | |
1404 | return 0; | |
1405 | } | |
1406 | ||
877211f5 | 1407 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1408 | { |
1409 | } | |
1410 | ||
1411 | static struct action_ops snd_pcm_action_drain_init = { | |
1412 | .pre_action = snd_pcm_pre_drain_init, | |
1413 | .do_action = snd_pcm_do_drain_init, | |
1414 | .post_action = snd_pcm_post_drain_init | |
1415 | }; | |
1416 | ||
1417 | struct drain_rec { | |
877211f5 | 1418 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1419 | wait_queue_t wait; |
1420 | snd_pcm_uframes_t stop_threshold; | |
1421 | }; | |
1422 | ||
877211f5 | 1423 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1424 | |
1425 | /* | |
1426 | * Drain the stream(s). | |
1427 | * When the substream is linked, sync until the draining of all playback streams | |
1428 | * is finished. | |
1429 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1430 | * (capture only) state. | |
1431 | */ | |
877211f5 | 1432 | static int snd_pcm_drain(struct snd_pcm_substream *substream) |
1da177e4 | 1433 | { |
877211f5 TI |
1434 | struct snd_card *card; |
1435 | struct snd_pcm_runtime *runtime; | |
ef991b95 | 1436 | struct snd_pcm_substream *s; |
1da177e4 LT |
1437 | int result = 0; |
1438 | int i, num_drecs; | |
1439 | struct drain_rec *drec, drec_tmp, *d; | |
1440 | ||
1441 | snd_assert(substream != NULL, return -ENXIO); | |
1442 | card = substream->pcm->card; | |
1443 | runtime = substream->runtime; | |
1444 | ||
1445 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1446 | return -EBADFD; | |
1447 | ||
1da177e4 LT |
1448 | snd_power_lock(card); |
1449 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1450 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1451 | if (result < 0) { |
1452 | snd_power_unlock(card); | |
1453 | return result; | |
1454 | } | |
1da177e4 LT |
1455 | } |
1456 | ||
1457 | /* allocate temporary record for drain sync */ | |
21cb2a2e | 1458 | down_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1459 | if (snd_pcm_stream_linked(substream)) { |
1460 | drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL); | |
1461 | if (! drec) { | |
21cb2a2e TI |
1462 | up_read(&snd_pcm_link_rwsem); |
1463 | snd_power_unlock(card); | |
1464 | return -ENOMEM; | |
1da177e4 LT |
1465 | } |
1466 | } else | |
1467 | drec = &drec_tmp; | |
1468 | ||
21cb2a2e | 1469 | /* count only playback streams */ |
1da177e4 | 1470 | num_drecs = 0; |
ef991b95 | 1471 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 1472 | runtime = s->runtime; |
1da177e4 LT |
1473 | if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1474 | d = &drec[num_drecs++]; | |
1475 | d->substream = s; | |
1476 | init_waitqueue_entry(&d->wait, current); | |
1477 | add_wait_queue(&runtime->sleep, &d->wait); | |
1478 | /* stop_threshold fixup to avoid endless loop when | |
1479 | * stop_threshold > buffer_size | |
1480 | */ | |
1481 | d->stop_threshold = runtime->stop_threshold; | |
1482 | if (runtime->stop_threshold > runtime->buffer_size) | |
1483 | runtime->stop_threshold = runtime->buffer_size; | |
1484 | } | |
1485 | } | |
21cb2a2e | 1486 | up_read(&snd_pcm_link_rwsem); |
21cb2a2e TI |
1487 | |
1488 | snd_pcm_stream_lock_irq(substream); | |
1489 | /* resume pause */ | |
1490 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1491 | snd_pcm_pause(substream, 0); | |
1492 | ||
1493 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1494 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
1495 | if (result < 0) { | |
1496 | snd_pcm_stream_unlock_irq(substream); | |
1497 | goto _error; | |
1498 | } | |
1da177e4 LT |
1499 | |
1500 | for (;;) { | |
1501 | long tout; | |
1502 | if (signal_pending(current)) { | |
1503 | result = -ERESTARTSYS; | |
1504 | break; | |
1505 | } | |
21cb2a2e TI |
1506 | /* all finished? */ |
1507 | for (i = 0; i < num_drecs; i++) { | |
1508 | runtime = drec[i].substream->runtime; | |
1509 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
1510 | break; | |
1511 | } | |
1512 | if (i == num_drecs) | |
1513 | break; /* yes, all drained */ | |
1514 | ||
1da177e4 LT |
1515 | set_current_state(TASK_INTERRUPTIBLE); |
1516 | snd_pcm_stream_unlock_irq(substream); | |
1517 | snd_power_unlock(card); | |
1518 | tout = schedule_timeout(10 * HZ); | |
1519 | snd_power_lock(card); | |
1520 | snd_pcm_stream_lock_irq(substream); | |
1521 | if (tout == 0) { | |
1522 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1523 | result = -ESTRPIPE; | |
1524 | else { | |
1525 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1526 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1527 | result = -EIO; | |
1528 | } | |
1529 | break; | |
1530 | } | |
1da177e4 | 1531 | } |
21cb2a2e TI |
1532 | |
1533 | snd_pcm_stream_unlock_irq(substream); | |
1534 | ||
1535 | _error: | |
1da177e4 LT |
1536 | for (i = 0; i < num_drecs; i++) { |
1537 | d = &drec[i]; | |
1538 | runtime = d->substream->runtime; | |
1539 | remove_wait_queue(&runtime->sleep, &d->wait); | |
1540 | runtime->stop_threshold = d->stop_threshold; | |
1541 | } | |
1542 | ||
1da177e4 LT |
1543 | if (drec != &drec_tmp) |
1544 | kfree(drec); | |
1da177e4 | 1545 | snd_power_unlock(card); |
1da177e4 LT |
1546 | |
1547 | return result; | |
1548 | } | |
1549 | ||
1550 | /* | |
1551 | * drop ioctl | |
1552 | * | |
1553 | * Immediately put all linked substreams into SETUP state. | |
1554 | */ | |
877211f5 | 1555 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1556 | { |
877211f5 TI |
1557 | struct snd_pcm_runtime *runtime; |
1558 | struct snd_card *card; | |
1da177e4 LT |
1559 | int result = 0; |
1560 | ||
1561 | snd_assert(substream != NULL, return -ENXIO); | |
1562 | runtime = substream->runtime; | |
1563 | card = substream->pcm->card; | |
1564 | ||
de1b8b93 TI |
1565 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1566 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1567 | return -EBADFD; |
1568 | ||
1569 | snd_power_lock(card); | |
1570 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1571 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1572 | if (result < 0) |
1573 | goto _unlock; | |
1574 | } | |
1575 | ||
1576 | snd_pcm_stream_lock_irq(substream); | |
1577 | /* resume pause */ | |
1578 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1579 | snd_pcm_pause(substream, 0); | |
1580 | ||
1581 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1582 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1583 | snd_pcm_stream_unlock_irq(substream); | |
1584 | _unlock: | |
1585 | snd_power_unlock(card); | |
1586 | return result; | |
1587 | } | |
1588 | ||
1589 | ||
1590 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1591 | static struct file *snd_pcm_file_fd(int fd) |
1592 | { | |
1593 | struct file *file; | |
1594 | struct inode *inode; | |
f87135f5 CL |
1595 | unsigned int minor; |
1596 | ||
1da177e4 LT |
1597 | file = fget(fd); |
1598 | if (!file) | |
1599 | return NULL; | |
7bc56323 | 1600 | inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
1601 | if (!S_ISCHR(inode->i_mode) || |
1602 | imajor(inode) != snd_major) { | |
1603 | fput(file); | |
1604 | return NULL; | |
1605 | } | |
1606 | minor = iminor(inode); | |
f87135f5 CL |
1607 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1608 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1609 | fput(file); |
1610 | return NULL; | |
1611 | } | |
1612 | return file; | |
1613 | } | |
1614 | ||
1615 | /* | |
1616 | * PCM link handling | |
1617 | */ | |
877211f5 | 1618 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1619 | { |
1620 | int res = 0; | |
1621 | struct file *file; | |
877211f5 TI |
1622 | struct snd_pcm_file *pcm_file; |
1623 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1624 | |
1625 | file = snd_pcm_file_fd(fd); | |
1626 | if (!file) | |
1627 | return -EBADFD; | |
1628 | pcm_file = file->private_data; | |
1629 | substream1 = pcm_file->substream; | |
1630 | down_write(&snd_pcm_link_rwsem); | |
1631 | write_lock_irq(&snd_pcm_link_rwlock); | |
1632 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1633 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1634 | res = -EBADFD; | |
1635 | goto _end; | |
1636 | } | |
1637 | if (snd_pcm_stream_linked(substream1)) { | |
1638 | res = -EALREADY; | |
1639 | goto _end; | |
1640 | } | |
1641 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1642 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1643 | if (substream->group == NULL) { |
1644 | res = -ENOMEM; | |
1645 | goto _end; | |
1646 | } | |
1647 | spin_lock_init(&substream->group->lock); | |
1648 | INIT_LIST_HEAD(&substream->group->substreams); | |
1649 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1650 | substream->group->count = 1; | |
1651 | } | |
1652 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1653 | substream->group->count++; | |
1654 | substream1->group = substream->group; | |
1655 | _end: | |
1656 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1657 | up_write(&snd_pcm_link_rwsem); | |
1658 | fput(file); | |
1659 | return res; | |
1660 | } | |
1661 | ||
877211f5 | 1662 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1663 | { |
1664 | substream->group = &substream->self_group; | |
1665 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1666 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1667 | } | |
1668 | ||
877211f5 | 1669 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 | 1670 | { |
ef991b95 | 1671 | struct snd_pcm_substream *s; |
1da177e4 LT |
1672 | int res = 0; |
1673 | ||
1674 | down_write(&snd_pcm_link_rwsem); | |
1675 | write_lock_irq(&snd_pcm_link_rwlock); | |
1676 | if (!snd_pcm_stream_linked(substream)) { | |
1677 | res = -EALREADY; | |
1678 | goto _end; | |
1679 | } | |
1680 | list_del(&substream->link_list); | |
1681 | substream->group->count--; | |
1682 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
ef991b95 TI |
1683 | snd_pcm_group_for_each_entry(s, substream) { |
1684 | relink_to_local(s); | |
1da177e4 LT |
1685 | break; |
1686 | } | |
1687 | kfree(substream->group); | |
1688 | } | |
1689 | relink_to_local(substream); | |
1690 | _end: | |
1691 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1692 | up_write(&snd_pcm_link_rwsem); | |
1693 | return res; | |
1694 | } | |
1695 | ||
1696 | /* | |
1697 | * hw configurator | |
1698 | */ | |
877211f5 TI |
1699 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1700 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1701 | { |
877211f5 | 1702 | struct snd_interval t; |
1da177e4 LT |
1703 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1704 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1705 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1706 | } | |
1707 | ||
877211f5 TI |
1708 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1709 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1710 | { |
877211f5 | 1711 | struct snd_interval t; |
1da177e4 LT |
1712 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1713 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1714 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1715 | } | |
1716 | ||
877211f5 TI |
1717 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1718 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1719 | { |
877211f5 | 1720 | struct snd_interval t; |
1da177e4 LT |
1721 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1722 | hw_param_interval_c(params, rule->deps[1]), | |
1723 | (unsigned long) rule->private, &t); | |
1724 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1725 | } | |
1726 | ||
877211f5 TI |
1727 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1728 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1729 | { |
877211f5 | 1730 | struct snd_interval t; |
1da177e4 LT |
1731 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1732 | (unsigned long) rule->private, | |
1733 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1734 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1735 | } | |
1736 | ||
877211f5 TI |
1737 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1738 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1739 | { |
1740 | unsigned int k; | |
877211f5 TI |
1741 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1742 | struct snd_mask m; | |
1743 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1744 | snd_mask_any(&m); |
1745 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1746 | int bits; | |
1747 | if (! snd_mask_test(mask, k)) | |
1748 | continue; | |
1749 | bits = snd_pcm_format_physical_width(k); | |
1750 | if (bits <= 0) | |
1751 | continue; /* ignore invalid formats */ | |
1752 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1753 | snd_mask_reset(&m, k); | |
1754 | } | |
1755 | return snd_mask_refine(mask, &m); | |
1756 | } | |
1757 | ||
877211f5 TI |
1758 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1759 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1760 | { |
877211f5 | 1761 | struct snd_interval t; |
1da177e4 LT |
1762 | unsigned int k; |
1763 | t.min = UINT_MAX; | |
1764 | t.max = 0; | |
1765 | t.openmin = 0; | |
1766 | t.openmax = 0; | |
1767 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1768 | int bits; | |
1769 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1770 | continue; | |
1771 | bits = snd_pcm_format_physical_width(k); | |
1772 | if (bits <= 0) | |
1773 | continue; /* ignore invalid formats */ | |
1774 | if (t.min > (unsigned)bits) | |
1775 | t.min = bits; | |
1776 | if (t.max < (unsigned)bits) | |
1777 | t.max = bits; | |
1778 | } | |
1779 | t.integer = 1; | |
1780 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1781 | } | |
1782 | ||
1783 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1784 | #error "Change this table" | |
1785 | #endif | |
1786 | ||
1787 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1788 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1789 | ||
877211f5 TI |
1790 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1791 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1792 | { |
877211f5 | 1793 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 LT |
1794 | return snd_interval_list(hw_param_interval(params, rule->var), |
1795 | ARRAY_SIZE(rates), rates, hw->rates); | |
1796 | } | |
1797 | ||
877211f5 TI |
1798 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1799 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1800 | { |
877211f5 TI |
1801 | struct snd_interval t; |
1802 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1803 | t.min = 0; |
1804 | t.max = substream->buffer_bytes_max; | |
1805 | t.openmin = 0; | |
1806 | t.openmax = 0; | |
1807 | t.integer = 1; | |
1808 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1809 | } | |
1810 | ||
877211f5 | 1811 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1812 | { |
877211f5 TI |
1813 | struct snd_pcm_runtime *runtime = substream->runtime; |
1814 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1815 | int k, err; |
1816 | ||
1817 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1818 | snd_mask_any(constrs_mask(constrs, k)); | |
1819 | } | |
1820 | ||
1821 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1822 | snd_interval_any(constrs_interval(constrs, k)); | |
1823 | } | |
1824 | ||
1825 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1826 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1827 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1828 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1829 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1830 | ||
1831 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1832 | snd_pcm_hw_rule_format, NULL, | |
1833 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1834 | if (err < 0) | |
1835 | return err; | |
1836 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1837 | snd_pcm_hw_rule_sample_bits, NULL, | |
1838 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1839 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1840 | if (err < 0) | |
1841 | return err; | |
1842 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1843 | snd_pcm_hw_rule_div, NULL, | |
1844 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1845 | if (err < 0) | |
1846 | return err; | |
1847 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1848 | snd_pcm_hw_rule_mul, NULL, | |
1849 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1850 | if (err < 0) | |
1851 | return err; | |
1852 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1853 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1854 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1855 | if (err < 0) | |
1856 | return err; | |
1857 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1858 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1859 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1860 | if (err < 0) | |
1861 | return err; | |
1862 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1863 | snd_pcm_hw_rule_div, NULL, | |
1864 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1865 | if (err < 0) | |
1866 | return err; | |
1867 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1868 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1869 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1870 | if (err < 0) | |
1871 | return err; | |
1872 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1873 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1874 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1875 | if (err < 0) | |
1876 | return err; | |
1877 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1878 | snd_pcm_hw_rule_div, NULL, | |
1879 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1880 | if (err < 0) | |
1881 | return err; | |
1882 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1883 | snd_pcm_hw_rule_div, NULL, | |
1884 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1885 | if (err < 0) | |
1886 | return err; | |
1887 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1888 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1889 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1890 | if (err < 0) | |
1891 | return err; | |
1892 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1893 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1894 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1895 | if (err < 0) | |
1896 | return err; | |
1897 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1898 | snd_pcm_hw_rule_mul, NULL, | |
1899 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1900 | if (err < 0) | |
1901 | return err; | |
1902 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1903 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1904 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1905 | if (err < 0) | |
1906 | return err; | |
1907 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1908 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1909 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1910 | if (err < 0) | |
1911 | return err; | |
1912 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1913 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1914 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1915 | if (err < 0) | |
1916 | return err; | |
1917 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1918 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1919 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1920 | if (err < 0) | |
1921 | return err; | |
1922 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1923 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1924 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1925 | if (err < 0) | |
1926 | return err; | |
1927 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1928 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1929 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1930 | if (err < 0) | |
1931 | return err; | |
1932 | return 0; | |
1933 | } | |
1934 | ||
877211f5 | 1935 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1936 | { |
877211f5 TI |
1937 | struct snd_pcm_runtime *runtime = substream->runtime; |
1938 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1939 | int err; |
1940 | unsigned int mask = 0; | |
1941 | ||
1942 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1943 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1944 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1945 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1946 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1947 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1948 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1949 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1950 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1951 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1952 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1953 | } | |
1954 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
1955 | snd_assert(err >= 0, return -EINVAL); | |
1956 | ||
1957 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
1958 | snd_assert(err >= 0, return -EINVAL); | |
1959 | ||
1960 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
1961 | snd_assert(err >= 0, return -EINVAL); | |
1962 | ||
1963 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1964 | hw->channels_min, hw->channels_max); | |
1965 | snd_assert(err >= 0, return -EINVAL); | |
1966 | ||
1967 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1968 | hw->rate_min, hw->rate_max); | |
1969 | snd_assert(err >= 0, return -EINVAL); | |
1970 | ||
1971 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1972 | hw->period_bytes_min, hw->period_bytes_max); | |
1973 | snd_assert(err >= 0, return -EINVAL); | |
1974 | ||
1975 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1976 | hw->periods_min, hw->periods_max); | |
1977 | snd_assert(err >= 0, return -EINVAL); | |
1978 | ||
1979 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1980 | hw->period_bytes_min, hw->buffer_bytes_max); | |
1981 | snd_assert(err >= 0, return -EINVAL); | |
1982 | ||
1983 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1984 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1985 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1986 | if (err < 0) | |
1987 | return err; | |
1988 | ||
1989 | /* FIXME: remove */ | |
1990 | if (runtime->dma_bytes) { | |
1991 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
1992 | snd_assert(err >= 0, return -EINVAL); | |
1993 | } | |
1994 | ||
1995 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
1996 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1997 | snd_pcm_hw_rule_rate, hw, | |
1998 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1999 | if (err < 0) | |
2000 | return err; | |
2001 | } | |
2002 | ||
2003 | /* FIXME: this belong to lowlevel */ | |
2004 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_TICK_TIME, | |
2005 | 1000000 / HZ, 1000000 / HZ); | |
2006 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); | |
2007 | ||
2008 | return 0; | |
2009 | } | |
2010 | ||
3bf75f9b | 2011 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 2012 | { |
1da177e4 | 2013 | snd_pcm_unlink(substream); |
3bf75f9b TI |
2014 | } |
2015 | ||
2016 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
2017 | { | |
0df63e44 TI |
2018 | substream->ref_count--; |
2019 | if (substream->ref_count > 0) | |
2020 | return; | |
2021 | ||
3bf75f9b | 2022 | snd_pcm_drop(substream); |
3bf75f9b | 2023 | if (substream->hw_opened) { |
1da177e4 LT |
2024 | if (substream->ops->hw_free != NULL) |
2025 | substream->ops->hw_free(substream); | |
2026 | substream->ops->close(substream); | |
3bf75f9b | 2027 | substream->hw_opened = 0; |
1da177e4 | 2028 | } |
1576274d TI |
2029 | if (substream->pcm_release) { |
2030 | substream->pcm_release(substream); | |
2031 | substream->pcm_release = NULL; | |
2032 | } | |
3bf75f9b TI |
2033 | snd_pcm_detach_substream(substream); |
2034 | } | |
2035 | ||
e88e8ae6 TI |
2036 | EXPORT_SYMBOL(snd_pcm_release_substream); |
2037 | ||
3bf75f9b TI |
2038 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
2039 | struct file *file, | |
2040 | struct snd_pcm_substream **rsubstream) | |
2041 | { | |
2042 | struct snd_pcm_substream *substream; | |
2043 | int err; | |
2044 | ||
2045 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2046 | if (err < 0) | |
2047 | return err; | |
0df63e44 TI |
2048 | if (substream->ref_count > 1) { |
2049 | *rsubstream = substream; | |
2050 | return 0; | |
2051 | } | |
2052 | ||
3bf75f9b TI |
2053 | err = snd_pcm_hw_constraints_init(substream); |
2054 | if (err < 0) { | |
2055 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2056 | goto error; | |
2057 | } | |
2058 | ||
2059 | if ((err = substream->ops->open(substream)) < 0) | |
2060 | goto error; | |
2061 | ||
2062 | substream->hw_opened = 1; | |
2063 | ||
2064 | err = snd_pcm_hw_constraints_complete(substream); | |
2065 | if (err < 0) { | |
2066 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2067 | goto error; | |
2068 | } | |
2069 | ||
2070 | *rsubstream = substream; | |
1da177e4 | 2071 | return 0; |
3bf75f9b TI |
2072 | |
2073 | error: | |
2074 | snd_pcm_release_substream(substream); | |
2075 | return err; | |
1da177e4 LT |
2076 | } |
2077 | ||
e88e8ae6 TI |
2078 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2079 | ||
1da177e4 | 2080 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2081 | struct snd_pcm *pcm, |
1da177e4 | 2082 | int stream, |
877211f5 | 2083 | struct snd_pcm_file **rpcm_file) |
1da177e4 | 2084 | { |
877211f5 TI |
2085 | struct snd_pcm_file *pcm_file; |
2086 | struct snd_pcm_substream *substream; | |
2087 | struct snd_pcm_str *str; | |
3bf75f9b | 2088 | int err; |
1da177e4 LT |
2089 | |
2090 | snd_assert(rpcm_file != NULL, return -EINVAL); | |
2091 | *rpcm_file = NULL; | |
2092 | ||
3bf75f9b TI |
2093 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2094 | if (err < 0) | |
2095 | return err; | |
2096 | ||
548a648b TI |
2097 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
2098 | if (pcm_file == NULL) { | |
2099 | snd_pcm_release_substream(substream); | |
2100 | return -ENOMEM; | |
2101 | } | |
2102 | pcm_file->substream = substream; | |
2103 | if (substream->ref_count == 1) { | |
0df63e44 TI |
2104 | str = substream->pstr; |
2105 | substream->file = pcm_file; | |
2106 | substream->pcm_release = pcm_release_private; | |
1da177e4 | 2107 | } |
1da177e4 LT |
2108 | file->private_data = pcm_file; |
2109 | *rpcm_file = pcm_file; | |
2110 | return 0; | |
2111 | } | |
2112 | ||
f87135f5 CL |
2113 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2114 | { | |
2115 | struct snd_pcm *pcm; | |
2116 | ||
2117 | pcm = snd_lookup_minor_data(iminor(inode), | |
2118 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2119 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2120 | } | |
2121 | ||
2122 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2123 | { |
877211f5 | 2124 | struct snd_pcm *pcm; |
f87135f5 CL |
2125 | |
2126 | pcm = snd_lookup_minor_data(iminor(inode), | |
2127 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2128 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2129 | } | |
2130 | ||
2131 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2132 | { | |
2133 | int err; | |
877211f5 | 2134 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2135 | wait_queue_t wait; |
2136 | ||
1da177e4 LT |
2137 | if (pcm == NULL) { |
2138 | err = -ENODEV; | |
2139 | goto __error1; | |
2140 | } | |
2141 | err = snd_card_file_add(pcm->card, file); | |
2142 | if (err < 0) | |
2143 | goto __error1; | |
2144 | if (!try_module_get(pcm->card->module)) { | |
2145 | err = -EFAULT; | |
2146 | goto __error2; | |
2147 | } | |
2148 | init_waitqueue_entry(&wait, current); | |
2149 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2150 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2151 | while (1) { |
f87135f5 | 2152 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2153 | if (err >= 0) |
2154 | break; | |
2155 | if (err == -EAGAIN) { | |
2156 | if (file->f_flags & O_NONBLOCK) { | |
2157 | err = -EBUSY; | |
2158 | break; | |
2159 | } | |
2160 | } else | |
2161 | break; | |
2162 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2163 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2164 | schedule(); |
1a60d4c5 | 2165 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2166 | if (signal_pending(current)) { |
2167 | err = -ERESTARTSYS; | |
2168 | break; | |
2169 | } | |
2170 | } | |
2171 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2172 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2173 | if (err < 0) |
2174 | goto __error; | |
2175 | return err; | |
2176 | ||
2177 | __error: | |
2178 | module_put(pcm->card->module); | |
2179 | __error2: | |
2180 | snd_card_file_remove(pcm->card, file); | |
2181 | __error1: | |
2182 | return err; | |
2183 | } | |
2184 | ||
2185 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2186 | { | |
877211f5 TI |
2187 | struct snd_pcm *pcm; |
2188 | struct snd_pcm_substream *substream; | |
2189 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2190 | |
2191 | pcm_file = file->private_data; | |
2192 | substream = pcm_file->substream; | |
2193 | snd_assert(substream != NULL, return -ENXIO); | |
1da177e4 | 2194 | pcm = substream->pcm; |
1da177e4 | 2195 | fasync_helper(-1, file, 0, &substream->runtime->fasync); |
1a60d4c5 | 2196 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2197 | snd_pcm_release_substream(substream); |
548a648b | 2198 | kfree(pcm_file); |
1a60d4c5 | 2199 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2200 | wake_up(&pcm->open_wait); |
2201 | module_put(pcm->card->module); | |
2202 | snd_card_file_remove(pcm->card, file); | |
2203 | return 0; | |
2204 | } | |
2205 | ||
877211f5 TI |
2206 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2207 | snd_pcm_uframes_t frames) | |
1da177e4 | 2208 | { |
877211f5 | 2209 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2210 | snd_pcm_sframes_t appl_ptr; |
2211 | snd_pcm_sframes_t ret; | |
2212 | snd_pcm_sframes_t hw_avail; | |
2213 | ||
2214 | if (frames == 0) | |
2215 | return 0; | |
2216 | ||
2217 | snd_pcm_stream_lock_irq(substream); | |
2218 | switch (runtime->status->state) { | |
2219 | case SNDRV_PCM_STATE_PREPARED: | |
2220 | break; | |
2221 | case SNDRV_PCM_STATE_DRAINING: | |
2222 | case SNDRV_PCM_STATE_RUNNING: | |
2223 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2224 | break; | |
2225 | /* Fall through */ | |
2226 | case SNDRV_PCM_STATE_XRUN: | |
2227 | ret = -EPIPE; | |
2228 | goto __end; | |
2229 | default: | |
2230 | ret = -EBADFD; | |
2231 | goto __end; | |
2232 | } | |
2233 | ||
2234 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2235 | if (hw_avail <= 0) { | |
2236 | ret = 0; | |
2237 | goto __end; | |
2238 | } | |
2239 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2240 | frames = hw_avail; | |
2241 | else | |
2242 | frames -= frames % runtime->xfer_align; | |
2243 | appl_ptr = runtime->control->appl_ptr - frames; | |
2244 | if (appl_ptr < 0) | |
2245 | appl_ptr += runtime->boundary; | |
2246 | runtime->control->appl_ptr = appl_ptr; | |
2247 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2248 | runtime->sleep_min) | |
2249 | snd_pcm_tick_prepare(substream); | |
2250 | ret = frames; | |
2251 | __end: | |
2252 | snd_pcm_stream_unlock_irq(substream); | |
2253 | return ret; | |
2254 | } | |
2255 | ||
877211f5 TI |
2256 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2257 | snd_pcm_uframes_t frames) | |
1da177e4 | 2258 | { |
877211f5 | 2259 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2260 | snd_pcm_sframes_t appl_ptr; |
2261 | snd_pcm_sframes_t ret; | |
2262 | snd_pcm_sframes_t hw_avail; | |
2263 | ||
2264 | if (frames == 0) | |
2265 | return 0; | |
2266 | ||
2267 | snd_pcm_stream_lock_irq(substream); | |
2268 | switch (runtime->status->state) { | |
2269 | case SNDRV_PCM_STATE_PREPARED: | |
2270 | case SNDRV_PCM_STATE_DRAINING: | |
2271 | break; | |
2272 | case SNDRV_PCM_STATE_RUNNING: | |
2273 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2274 | break; | |
2275 | /* Fall through */ | |
2276 | case SNDRV_PCM_STATE_XRUN: | |
2277 | ret = -EPIPE; | |
2278 | goto __end; | |
2279 | default: | |
2280 | ret = -EBADFD; | |
2281 | goto __end; | |
2282 | } | |
2283 | ||
2284 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2285 | if (hw_avail <= 0) { | |
2286 | ret = 0; | |
2287 | goto __end; | |
2288 | } | |
2289 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2290 | frames = hw_avail; | |
2291 | else | |
2292 | frames -= frames % runtime->xfer_align; | |
2293 | appl_ptr = runtime->control->appl_ptr - frames; | |
2294 | if (appl_ptr < 0) | |
2295 | appl_ptr += runtime->boundary; | |
2296 | runtime->control->appl_ptr = appl_ptr; | |
2297 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2298 | runtime->sleep_min) | |
2299 | snd_pcm_tick_prepare(substream); | |
2300 | ret = frames; | |
2301 | __end: | |
2302 | snd_pcm_stream_unlock_irq(substream); | |
2303 | return ret; | |
2304 | } | |
2305 | ||
877211f5 TI |
2306 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2307 | snd_pcm_uframes_t frames) | |
1da177e4 | 2308 | { |
877211f5 | 2309 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2310 | snd_pcm_sframes_t appl_ptr; |
2311 | snd_pcm_sframes_t ret; | |
2312 | snd_pcm_sframes_t avail; | |
2313 | ||
2314 | if (frames == 0) | |
2315 | return 0; | |
2316 | ||
2317 | snd_pcm_stream_lock_irq(substream); | |
2318 | switch (runtime->status->state) { | |
2319 | case SNDRV_PCM_STATE_PREPARED: | |
2320 | case SNDRV_PCM_STATE_PAUSED: | |
2321 | break; | |
2322 | case SNDRV_PCM_STATE_DRAINING: | |
2323 | case SNDRV_PCM_STATE_RUNNING: | |
2324 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2325 | break; | |
2326 | /* Fall through */ | |
2327 | case SNDRV_PCM_STATE_XRUN: | |
2328 | ret = -EPIPE; | |
2329 | goto __end; | |
2330 | default: | |
2331 | ret = -EBADFD; | |
2332 | goto __end; | |
2333 | } | |
2334 | ||
2335 | avail = snd_pcm_playback_avail(runtime); | |
2336 | if (avail <= 0) { | |
2337 | ret = 0; | |
2338 | goto __end; | |
2339 | } | |
2340 | if (frames > (snd_pcm_uframes_t)avail) | |
2341 | frames = avail; | |
2342 | else | |
2343 | frames -= frames % runtime->xfer_align; | |
2344 | appl_ptr = runtime->control->appl_ptr + frames; | |
2345 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2346 | appl_ptr -= runtime->boundary; | |
2347 | runtime->control->appl_ptr = appl_ptr; | |
2348 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2349 | runtime->sleep_min) | |
2350 | snd_pcm_tick_prepare(substream); | |
2351 | ret = frames; | |
2352 | __end: | |
2353 | snd_pcm_stream_unlock_irq(substream); | |
2354 | return ret; | |
2355 | } | |
2356 | ||
877211f5 TI |
2357 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2358 | snd_pcm_uframes_t frames) | |
1da177e4 | 2359 | { |
877211f5 | 2360 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2361 | snd_pcm_sframes_t appl_ptr; |
2362 | snd_pcm_sframes_t ret; | |
2363 | snd_pcm_sframes_t avail; | |
2364 | ||
2365 | if (frames == 0) | |
2366 | return 0; | |
2367 | ||
2368 | snd_pcm_stream_lock_irq(substream); | |
2369 | switch (runtime->status->state) { | |
2370 | case SNDRV_PCM_STATE_PREPARED: | |
2371 | case SNDRV_PCM_STATE_DRAINING: | |
2372 | case SNDRV_PCM_STATE_PAUSED: | |
2373 | break; | |
2374 | case SNDRV_PCM_STATE_RUNNING: | |
2375 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2376 | break; | |
2377 | /* Fall through */ | |
2378 | case SNDRV_PCM_STATE_XRUN: | |
2379 | ret = -EPIPE; | |
2380 | goto __end; | |
2381 | default: | |
2382 | ret = -EBADFD; | |
2383 | goto __end; | |
2384 | } | |
2385 | ||
2386 | avail = snd_pcm_capture_avail(runtime); | |
2387 | if (avail <= 0) { | |
2388 | ret = 0; | |
2389 | goto __end; | |
2390 | } | |
2391 | if (frames > (snd_pcm_uframes_t)avail) | |
2392 | frames = avail; | |
2393 | else | |
2394 | frames -= frames % runtime->xfer_align; | |
2395 | appl_ptr = runtime->control->appl_ptr + frames; | |
2396 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2397 | appl_ptr -= runtime->boundary; | |
2398 | runtime->control->appl_ptr = appl_ptr; | |
2399 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2400 | runtime->sleep_min) | |
2401 | snd_pcm_tick_prepare(substream); | |
2402 | ret = frames; | |
2403 | __end: | |
2404 | snd_pcm_stream_unlock_irq(substream); | |
2405 | return ret; | |
2406 | } | |
2407 | ||
877211f5 | 2408 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2409 | { |
877211f5 | 2410 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2411 | int err; |
2412 | ||
2413 | snd_pcm_stream_lock_irq(substream); | |
2414 | switch (runtime->status->state) { | |
2415 | case SNDRV_PCM_STATE_DRAINING: | |
2416 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2417 | goto __badfd; | |
2418 | case SNDRV_PCM_STATE_RUNNING: | |
2419 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2420 | break; | |
2421 | /* Fall through */ | |
2422 | case SNDRV_PCM_STATE_PREPARED: | |
2423 | case SNDRV_PCM_STATE_SUSPENDED: | |
2424 | err = 0; | |
2425 | break; | |
2426 | case SNDRV_PCM_STATE_XRUN: | |
2427 | err = -EPIPE; | |
2428 | break; | |
2429 | default: | |
2430 | __badfd: | |
2431 | err = -EBADFD; | |
2432 | break; | |
2433 | } | |
2434 | snd_pcm_stream_unlock_irq(substream); | |
2435 | return err; | |
2436 | } | |
2437 | ||
877211f5 TI |
2438 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2439 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2440 | { |
877211f5 | 2441 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2442 | int err; |
2443 | snd_pcm_sframes_t n = 0; | |
2444 | ||
2445 | snd_pcm_stream_lock_irq(substream); | |
2446 | switch (runtime->status->state) { | |
2447 | case SNDRV_PCM_STATE_DRAINING: | |
2448 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2449 | goto __badfd; | |
2450 | case SNDRV_PCM_STATE_RUNNING: | |
2451 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2452 | break; | |
2453 | /* Fall through */ | |
2454 | case SNDRV_PCM_STATE_PREPARED: | |
2455 | case SNDRV_PCM_STATE_SUSPENDED: | |
2456 | err = 0; | |
2457 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2458 | n = snd_pcm_playback_hw_avail(runtime); | |
2459 | else | |
2460 | n = snd_pcm_capture_avail(runtime); | |
2461 | break; | |
2462 | case SNDRV_PCM_STATE_XRUN: | |
2463 | err = -EPIPE; | |
2464 | break; | |
2465 | default: | |
2466 | __badfd: | |
2467 | err = -EBADFD; | |
2468 | break; | |
2469 | } | |
2470 | snd_pcm_stream_unlock_irq(substream); | |
2471 | if (!err) | |
2472 | if (put_user(n, res)) | |
2473 | err = -EFAULT; | |
2474 | return err; | |
2475 | } | |
2476 | ||
877211f5 TI |
2477 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2478 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2479 | { |
877211f5 TI |
2480 | struct snd_pcm_runtime *runtime = substream->runtime; |
2481 | struct snd_pcm_sync_ptr sync_ptr; | |
2482 | volatile struct snd_pcm_mmap_status *status; | |
2483 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2484 | int err; |
2485 | ||
2486 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2487 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2488 | return -EFAULT; | |
877211f5 | 2489 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2490 | return -EFAULT; |
2491 | status = runtime->status; | |
2492 | control = runtime->control; | |
2493 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2494 | err = snd_pcm_hwsync(substream); | |
2495 | if (err < 0) | |
2496 | return err; | |
2497 | } | |
2498 | snd_pcm_stream_lock_irq(substream); | |
2499 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2500 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2501 | else | |
2502 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2503 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2504 | control->avail_min = sync_ptr.c.control.avail_min; | |
2505 | else | |
2506 | sync_ptr.c.control.avail_min = control->avail_min; | |
2507 | sync_ptr.s.status.state = status->state; | |
2508 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2509 | sync_ptr.s.status.tstamp = status->tstamp; | |
2510 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2511 | snd_pcm_stream_unlock_irq(substream); | |
2512 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2513 | return -EFAULT; | |
2514 | return 0; | |
2515 | } | |
2516 | ||
0df63e44 TI |
2517 | static int snd_pcm_common_ioctl1(struct file *file, |
2518 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2519 | unsigned int cmd, void __user *arg) |
2520 | { | |
2521 | snd_assert(substream != NULL, return -ENXIO); | |
2522 | ||
2523 | switch (cmd) { | |
2524 | case SNDRV_PCM_IOCTL_PVERSION: | |
2525 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2526 | case SNDRV_PCM_IOCTL_INFO: | |
2527 | return snd_pcm_info_user(substream, arg); | |
07799e75 | 2528 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
1da177e4 | 2529 | return 0; |
1da177e4 LT |
2530 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2531 | return snd_pcm_hw_refine_user(substream, arg); | |
2532 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2533 | return snd_pcm_hw_params_user(substream, arg); | |
2534 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2535 | return snd_pcm_hw_free(substream); | |
2536 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2537 | return snd_pcm_sw_params_user(substream, arg); | |
2538 | case SNDRV_PCM_IOCTL_STATUS: | |
2539 | return snd_pcm_status_user(substream, arg); | |
2540 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2541 | return snd_pcm_channel_info_user(substream, arg); | |
2542 | case SNDRV_PCM_IOCTL_PREPARE: | |
0df63e44 | 2543 | return snd_pcm_prepare(substream, file); |
1da177e4 LT |
2544 | case SNDRV_PCM_IOCTL_RESET: |
2545 | return snd_pcm_reset(substream); | |
2546 | case SNDRV_PCM_IOCTL_START: | |
2547 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2548 | case SNDRV_PCM_IOCTL_LINK: | |
2549 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2550 | case SNDRV_PCM_IOCTL_UNLINK: | |
2551 | return snd_pcm_unlink(substream); | |
2552 | case SNDRV_PCM_IOCTL_RESUME: | |
2553 | return snd_pcm_resume(substream); | |
2554 | case SNDRV_PCM_IOCTL_XRUN: | |
2555 | return snd_pcm_xrun(substream); | |
2556 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2557 | return snd_pcm_hwsync(substream); | |
2558 | case SNDRV_PCM_IOCTL_DELAY: | |
2559 | return snd_pcm_delay(substream, arg); | |
2560 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2561 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2562 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2563 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2564 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2565 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2566 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2567 | #endif |
1da177e4 LT |
2568 | case SNDRV_PCM_IOCTL_DRAIN: |
2569 | return snd_pcm_drain(substream); | |
2570 | case SNDRV_PCM_IOCTL_DROP: | |
2571 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2572 | case SNDRV_PCM_IOCTL_PAUSE: |
2573 | { | |
2574 | int res; | |
2575 | snd_pcm_stream_lock_irq(substream); | |
2576 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2577 | snd_pcm_stream_unlock_irq(substream); | |
2578 | return res; | |
2579 | } | |
1da177e4 LT |
2580 | } |
2581 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2582 | return -ENOTTY; | |
2583 | } | |
2584 | ||
0df63e44 TI |
2585 | static int snd_pcm_playback_ioctl1(struct file *file, |
2586 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2587 | unsigned int cmd, void __user *arg) |
2588 | { | |
2589 | snd_assert(substream != NULL, return -ENXIO); | |
2590 | snd_assert(substream->stream == SNDRV_PCM_STREAM_PLAYBACK, return -EINVAL); | |
2591 | switch (cmd) { | |
2592 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2593 | { | |
877211f5 TI |
2594 | struct snd_xferi xferi; |
2595 | struct snd_xferi __user *_xferi = arg; | |
2596 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2597 | snd_pcm_sframes_t result; |
2598 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2599 | return -EBADFD; | |
2600 | if (put_user(0, &_xferi->result)) | |
2601 | return -EFAULT; | |
2602 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2603 | return -EFAULT; | |
2604 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2605 | __put_user(result, &_xferi->result); | |
2606 | return result < 0 ? result : 0; | |
2607 | } | |
2608 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2609 | { | |
877211f5 TI |
2610 | struct snd_xfern xfern; |
2611 | struct snd_xfern __user *_xfern = arg; | |
2612 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2613 | void __user **bufs; |
2614 | snd_pcm_sframes_t result; | |
2615 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2616 | return -EBADFD; | |
2617 | if (runtime->channels > 128) | |
2618 | return -EINVAL; | |
2619 | if (put_user(0, &_xfern->result)) | |
2620 | return -EFAULT; | |
2621 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2622 | return -EFAULT; | |
2623 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2624 | if (bufs == NULL) | |
2625 | return -ENOMEM; | |
2626 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2627 | kfree(bufs); | |
2628 | return -EFAULT; | |
2629 | } | |
2630 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); | |
2631 | kfree(bufs); | |
2632 | __put_user(result, &_xfern->result); | |
2633 | return result < 0 ? result : 0; | |
2634 | } | |
2635 | case SNDRV_PCM_IOCTL_REWIND: | |
2636 | { | |
2637 | snd_pcm_uframes_t frames; | |
2638 | snd_pcm_uframes_t __user *_frames = arg; | |
2639 | snd_pcm_sframes_t result; | |
2640 | if (get_user(frames, _frames)) | |
2641 | return -EFAULT; | |
2642 | if (put_user(0, _frames)) | |
2643 | return -EFAULT; | |
2644 | result = snd_pcm_playback_rewind(substream, frames); | |
2645 | __put_user(result, _frames); | |
2646 | return result < 0 ? result : 0; | |
2647 | } | |
2648 | case SNDRV_PCM_IOCTL_FORWARD: | |
2649 | { | |
2650 | snd_pcm_uframes_t frames; | |
2651 | snd_pcm_uframes_t __user *_frames = arg; | |
2652 | snd_pcm_sframes_t result; | |
2653 | if (get_user(frames, _frames)) | |
2654 | return -EFAULT; | |
2655 | if (put_user(0, _frames)) | |
2656 | return -EFAULT; | |
2657 | result = snd_pcm_playback_forward(substream, frames); | |
2658 | __put_user(result, _frames); | |
2659 | return result < 0 ? result : 0; | |
2660 | } | |
1da177e4 | 2661 | } |
0df63e44 | 2662 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2663 | } |
2664 | ||
0df63e44 TI |
2665 | static int snd_pcm_capture_ioctl1(struct file *file, |
2666 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2667 | unsigned int cmd, void __user *arg) |
2668 | { | |
2669 | snd_assert(substream != NULL, return -ENXIO); | |
2670 | snd_assert(substream->stream == SNDRV_PCM_STREAM_CAPTURE, return -EINVAL); | |
2671 | switch (cmd) { | |
2672 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2673 | { | |
877211f5 TI |
2674 | struct snd_xferi xferi; |
2675 | struct snd_xferi __user *_xferi = arg; | |
2676 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2677 | snd_pcm_sframes_t result; |
2678 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2679 | return -EBADFD; | |
2680 | if (put_user(0, &_xferi->result)) | |
2681 | return -EFAULT; | |
2682 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2683 | return -EFAULT; | |
2684 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2685 | __put_user(result, &_xferi->result); | |
2686 | return result < 0 ? result : 0; | |
2687 | } | |
2688 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2689 | { | |
877211f5 TI |
2690 | struct snd_xfern xfern; |
2691 | struct snd_xfern __user *_xfern = arg; | |
2692 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2693 | void *bufs; |
2694 | snd_pcm_sframes_t result; | |
2695 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2696 | return -EBADFD; | |
2697 | if (runtime->channels > 128) | |
2698 | return -EINVAL; | |
2699 | if (put_user(0, &_xfern->result)) | |
2700 | return -EFAULT; | |
2701 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2702 | return -EFAULT; | |
2703 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2704 | if (bufs == NULL) | |
2705 | return -ENOMEM; | |
2706 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2707 | kfree(bufs); | |
2708 | return -EFAULT; | |
2709 | } | |
2710 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); | |
2711 | kfree(bufs); | |
2712 | __put_user(result, &_xfern->result); | |
2713 | return result < 0 ? result : 0; | |
2714 | } | |
2715 | case SNDRV_PCM_IOCTL_REWIND: | |
2716 | { | |
2717 | snd_pcm_uframes_t frames; | |
2718 | snd_pcm_uframes_t __user *_frames = arg; | |
2719 | snd_pcm_sframes_t result; | |
2720 | if (get_user(frames, _frames)) | |
2721 | return -EFAULT; | |
2722 | if (put_user(0, _frames)) | |
2723 | return -EFAULT; | |
2724 | result = snd_pcm_capture_rewind(substream, frames); | |
2725 | __put_user(result, _frames); | |
2726 | return result < 0 ? result : 0; | |
2727 | } | |
2728 | case SNDRV_PCM_IOCTL_FORWARD: | |
2729 | { | |
2730 | snd_pcm_uframes_t frames; | |
2731 | snd_pcm_uframes_t __user *_frames = arg; | |
2732 | snd_pcm_sframes_t result; | |
2733 | if (get_user(frames, _frames)) | |
2734 | return -EFAULT; | |
2735 | if (put_user(0, _frames)) | |
2736 | return -EFAULT; | |
2737 | result = snd_pcm_capture_forward(substream, frames); | |
2738 | __put_user(result, _frames); | |
2739 | return result < 0 ? result : 0; | |
2740 | } | |
2741 | } | |
0df63e44 | 2742 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2743 | } |
2744 | ||
877211f5 TI |
2745 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2746 | unsigned long arg) | |
1da177e4 | 2747 | { |
877211f5 | 2748 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2749 | |
2750 | pcm_file = file->private_data; | |
2751 | ||
2752 | if (((cmd >> 8) & 0xff) != 'A') | |
2753 | return -ENOTTY; | |
2754 | ||
0df63e44 TI |
2755 | return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd, |
2756 | (void __user *)arg); | |
1da177e4 LT |
2757 | } |
2758 | ||
877211f5 TI |
2759 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2760 | unsigned long arg) | |
1da177e4 | 2761 | { |
877211f5 | 2762 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2763 | |
2764 | pcm_file = file->private_data; | |
2765 | ||
2766 | if (((cmd >> 8) & 0xff) != 'A') | |
2767 | return -ENOTTY; | |
2768 | ||
0df63e44 TI |
2769 | return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd, |
2770 | (void __user *)arg); | |
1da177e4 LT |
2771 | } |
2772 | ||
bf1bbb5a TI |
2773 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2774 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2775 | { |
2776 | mm_segment_t fs; | |
2777 | int result; | |
2778 | ||
2779 | fs = snd_enter_user(); | |
1da177e4 LT |
2780 | switch (substream->stream) { |
2781 | case SNDRV_PCM_STREAM_PLAYBACK: | |
0df63e44 TI |
2782 | result = snd_pcm_playback_ioctl1(NULL, substream, cmd, |
2783 | (void __user *)arg); | |
bf1bbb5a | 2784 | break; |
1da177e4 | 2785 | case SNDRV_PCM_STREAM_CAPTURE: |
0df63e44 TI |
2786 | result = snd_pcm_capture_ioctl1(NULL, substream, cmd, |
2787 | (void __user *)arg); | |
bf1bbb5a | 2788 | break; |
1da177e4 | 2789 | default: |
bf1bbb5a TI |
2790 | result = -EINVAL; |
2791 | break; | |
1da177e4 | 2792 | } |
bf1bbb5a TI |
2793 | snd_leave_user(fs); |
2794 | return result; | |
1da177e4 LT |
2795 | } |
2796 | ||
e88e8ae6 TI |
2797 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2798 | ||
877211f5 TI |
2799 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2800 | loff_t * offset) | |
1da177e4 | 2801 | { |
877211f5 TI |
2802 | struct snd_pcm_file *pcm_file; |
2803 | struct snd_pcm_substream *substream; | |
2804 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2805 | snd_pcm_sframes_t result; |
2806 | ||
2807 | pcm_file = file->private_data; | |
2808 | substream = pcm_file->substream; | |
2809 | snd_assert(substream != NULL, return -ENXIO); | |
2810 | runtime = substream->runtime; | |
2811 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2812 | return -EBADFD; | |
2813 | if (!frame_aligned(runtime, count)) | |
2814 | return -EINVAL; | |
2815 | count = bytes_to_frames(runtime, count); | |
2816 | result = snd_pcm_lib_read(substream, buf, count); | |
2817 | if (result > 0) | |
2818 | result = frames_to_bytes(runtime, result); | |
2819 | return result; | |
2820 | } | |
2821 | ||
877211f5 TI |
2822 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2823 | size_t count, loff_t * offset) | |
1da177e4 | 2824 | { |
877211f5 TI |
2825 | struct snd_pcm_file *pcm_file; |
2826 | struct snd_pcm_substream *substream; | |
2827 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2828 | snd_pcm_sframes_t result; |
2829 | ||
2830 | pcm_file = file->private_data; | |
2831 | substream = pcm_file->substream; | |
2832 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2833 | runtime = substream->runtime; | |
2834 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2835 | result = -EBADFD; | |
2836 | goto end; | |
2837 | } | |
2838 | if (!frame_aligned(runtime, count)) { | |
2839 | result = -EINVAL; | |
2840 | goto end; | |
2841 | } | |
2842 | count = bytes_to_frames(runtime, count); | |
2843 | result = snd_pcm_lib_write(substream, buf, count); | |
2844 | if (result > 0) | |
2845 | result = frames_to_bytes(runtime, result); | |
2846 | end: | |
2847 | return result; | |
2848 | } | |
2849 | ||
ee0b3e67 BP |
2850 | static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov, |
2851 | unsigned long nr_segs, loff_t pos) | |
1da177e4 LT |
2852 | |
2853 | { | |
877211f5 TI |
2854 | struct snd_pcm_file *pcm_file; |
2855 | struct snd_pcm_substream *substream; | |
2856 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2857 | snd_pcm_sframes_t result; |
2858 | unsigned long i; | |
2859 | void __user **bufs; | |
2860 | snd_pcm_uframes_t frames; | |
2861 | ||
ee0b3e67 | 2862 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 LT |
2863 | substream = pcm_file->substream; |
2864 | snd_assert(substream != NULL, return -ENXIO); | |
2865 | runtime = substream->runtime; | |
2866 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2867 | return -EBADFD; | |
ee0b3e67 | 2868 | if (nr_segs > 1024 || nr_segs != runtime->channels) |
1da177e4 | 2869 | return -EINVAL; |
ee0b3e67 | 2870 | if (!frame_aligned(runtime, iov->iov_len)) |
1da177e4 | 2871 | return -EINVAL; |
ee0b3e67 BP |
2872 | frames = bytes_to_samples(runtime, iov->iov_len); |
2873 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2874 | if (bufs == NULL) |
2875 | return -ENOMEM; | |
ee0b3e67 BP |
2876 | for (i = 0; i < nr_segs; ++i) |
2877 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2878 | result = snd_pcm_lib_readv(substream, bufs, frames); |
2879 | if (result > 0) | |
2880 | result = frames_to_bytes(runtime, result); | |
2881 | kfree(bufs); | |
2882 | return result; | |
2883 | } | |
2884 | ||
ee0b3e67 BP |
2885 | static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov, |
2886 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 2887 | { |
877211f5 TI |
2888 | struct snd_pcm_file *pcm_file; |
2889 | struct snd_pcm_substream *substream; | |
2890 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2891 | snd_pcm_sframes_t result; |
2892 | unsigned long i; | |
2893 | void __user **bufs; | |
2894 | snd_pcm_uframes_t frames; | |
2895 | ||
ee0b3e67 | 2896 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 LT |
2897 | substream = pcm_file->substream; |
2898 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2899 | runtime = substream->runtime; | |
2900 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2901 | result = -EBADFD; | |
2902 | goto end; | |
2903 | } | |
ee0b3e67 BP |
2904 | if (nr_segs > 128 || nr_segs != runtime->channels || |
2905 | !frame_aligned(runtime, iov->iov_len)) { | |
1da177e4 LT |
2906 | result = -EINVAL; |
2907 | goto end; | |
2908 | } | |
ee0b3e67 BP |
2909 | frames = bytes_to_samples(runtime, iov->iov_len); |
2910 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2911 | if (bufs == NULL) |
2912 | return -ENOMEM; | |
ee0b3e67 BP |
2913 | for (i = 0; i < nr_segs; ++i) |
2914 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2915 | result = snd_pcm_lib_writev(substream, bufs, frames); |
2916 | if (result > 0) | |
2917 | result = frames_to_bytes(runtime, result); | |
2918 | kfree(bufs); | |
2919 | end: | |
2920 | return result; | |
2921 | } | |
2922 | ||
2923 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2924 | { | |
877211f5 TI |
2925 | struct snd_pcm_file *pcm_file; |
2926 | struct snd_pcm_substream *substream; | |
2927 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2928 | unsigned int mask; |
2929 | snd_pcm_uframes_t avail; | |
2930 | ||
2931 | pcm_file = file->private_data; | |
2932 | ||
2933 | substream = pcm_file->substream; | |
2934 | snd_assert(substream != NULL, return -ENXIO); | |
2935 | runtime = substream->runtime; | |
2936 | ||
2937 | poll_wait(file, &runtime->sleep, wait); | |
2938 | ||
2939 | snd_pcm_stream_lock_irq(substream); | |
2940 | avail = snd_pcm_playback_avail(runtime); | |
2941 | switch (runtime->status->state) { | |
2942 | case SNDRV_PCM_STATE_RUNNING: | |
2943 | case SNDRV_PCM_STATE_PREPARED: | |
2944 | case SNDRV_PCM_STATE_PAUSED: | |
2945 | if (avail >= runtime->control->avail_min) { | |
2946 | mask = POLLOUT | POLLWRNORM; | |
2947 | break; | |
2948 | } | |
2949 | /* Fall through */ | |
2950 | case SNDRV_PCM_STATE_DRAINING: | |
2951 | mask = 0; | |
2952 | break; | |
2953 | default: | |
2954 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2955 | break; | |
2956 | } | |
2957 | snd_pcm_stream_unlock_irq(substream); | |
2958 | return mask; | |
2959 | } | |
2960 | ||
2961 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2962 | { | |
877211f5 TI |
2963 | struct snd_pcm_file *pcm_file; |
2964 | struct snd_pcm_substream *substream; | |
2965 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2966 | unsigned int mask; |
2967 | snd_pcm_uframes_t avail; | |
2968 | ||
2969 | pcm_file = file->private_data; | |
2970 | ||
2971 | substream = pcm_file->substream; | |
2972 | snd_assert(substream != NULL, return -ENXIO); | |
2973 | runtime = substream->runtime; | |
2974 | ||
2975 | poll_wait(file, &runtime->sleep, wait); | |
2976 | ||
2977 | snd_pcm_stream_lock_irq(substream); | |
2978 | avail = snd_pcm_capture_avail(runtime); | |
2979 | switch (runtime->status->state) { | |
2980 | case SNDRV_PCM_STATE_RUNNING: | |
2981 | case SNDRV_PCM_STATE_PREPARED: | |
2982 | case SNDRV_PCM_STATE_PAUSED: | |
2983 | if (avail >= runtime->control->avail_min) { | |
2984 | mask = POLLIN | POLLRDNORM; | |
2985 | break; | |
2986 | } | |
2987 | mask = 0; | |
2988 | break; | |
2989 | case SNDRV_PCM_STATE_DRAINING: | |
2990 | if (avail > 0) { | |
2991 | mask = POLLIN | POLLRDNORM; | |
2992 | break; | |
2993 | } | |
2994 | /* Fall through */ | |
2995 | default: | |
2996 | mask = POLLIN | POLLRDNORM | POLLERR; | |
2997 | break; | |
2998 | } | |
2999 | snd_pcm_stream_unlock_irq(substream); | |
3000 | return mask; | |
3001 | } | |
3002 | ||
3003 | /* | |
3004 | * mmap support | |
3005 | */ | |
3006 | ||
3007 | /* | |
3008 | * Only on coherent architectures, we can mmap the status and the control records | |
3009 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
3010 | */ | |
3011 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
3012 | /* | |
3013 | * mmap status record | |
3014 | */ | |
877211f5 TI |
3015 | static struct page * snd_pcm_mmap_status_nopage(struct vm_area_struct *area, |
3016 | unsigned long address, int *type) | |
1da177e4 | 3017 | { |
877211f5 TI |
3018 | struct snd_pcm_substream *substream = area->vm_private_data; |
3019 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3020 | struct page * page; |
3021 | ||
3022 | if (substream == NULL) | |
cd54e7e5 | 3023 | return NOPAGE_SIGBUS; |
1da177e4 LT |
3024 | runtime = substream->runtime; |
3025 | page = virt_to_page(runtime->status); | |
b5810039 | 3026 | get_page(page); |
1da177e4 LT |
3027 | if (type) |
3028 | *type = VM_FAULT_MINOR; | |
3029 | return page; | |
3030 | } | |
3031 | ||
3032 | static struct vm_operations_struct snd_pcm_vm_ops_status = | |
3033 | { | |
3034 | .nopage = snd_pcm_mmap_status_nopage, | |
3035 | }; | |
3036 | ||
877211f5 | 3037 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3038 | struct vm_area_struct *area) |
3039 | { | |
877211f5 | 3040 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3041 | long size; |
3042 | if (!(area->vm_flags & VM_READ)) | |
3043 | return -EINVAL; | |
3044 | runtime = substream->runtime; | |
3045 | snd_assert(runtime != NULL, return -EAGAIN); | |
3046 | size = area->vm_end - area->vm_start; | |
877211f5 | 3047 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3048 | return -EINVAL; |
3049 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3050 | area->vm_private_data = substream; | |
3051 | area->vm_flags |= VM_RESERVED; | |
3052 | return 0; | |
3053 | } | |
3054 | ||
3055 | /* | |
3056 | * mmap control record | |
3057 | */ | |
877211f5 TI |
3058 | static struct page * snd_pcm_mmap_control_nopage(struct vm_area_struct *area, |
3059 | unsigned long address, int *type) | |
1da177e4 | 3060 | { |
877211f5 TI |
3061 | struct snd_pcm_substream *substream = area->vm_private_data; |
3062 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3063 | struct page * page; |
3064 | ||
3065 | if (substream == NULL) | |
cd54e7e5 | 3066 | return NOPAGE_SIGBUS; |
1da177e4 LT |
3067 | runtime = substream->runtime; |
3068 | page = virt_to_page(runtime->control); | |
b5810039 | 3069 | get_page(page); |
1da177e4 LT |
3070 | if (type) |
3071 | *type = VM_FAULT_MINOR; | |
3072 | return page; | |
3073 | } | |
3074 | ||
3075 | static struct vm_operations_struct snd_pcm_vm_ops_control = | |
3076 | { | |
3077 | .nopage = snd_pcm_mmap_control_nopage, | |
3078 | }; | |
3079 | ||
877211f5 | 3080 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3081 | struct vm_area_struct *area) |
3082 | { | |
877211f5 | 3083 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3084 | long size; |
3085 | if (!(area->vm_flags & VM_READ)) | |
3086 | return -EINVAL; | |
3087 | runtime = substream->runtime; | |
3088 | snd_assert(runtime != NULL, return -EAGAIN); | |
3089 | size = area->vm_end - area->vm_start; | |
877211f5 | 3090 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3091 | return -EINVAL; |
3092 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3093 | area->vm_private_data = substream; | |
3094 | area->vm_flags |= VM_RESERVED; | |
3095 | return 0; | |
3096 | } | |
3097 | #else /* ! coherent mmap */ | |
3098 | /* | |
3099 | * don't support mmap for status and control records. | |
3100 | */ | |
877211f5 | 3101 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3102 | struct vm_area_struct *area) |
3103 | { | |
3104 | return -ENXIO; | |
3105 | } | |
877211f5 | 3106 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3107 | struct vm_area_struct *area) |
3108 | { | |
3109 | return -ENXIO; | |
3110 | } | |
3111 | #endif /* coherent mmap */ | |
3112 | ||
3113 | /* | |
3114 | * nopage callback for mmapping a RAM page | |
3115 | */ | |
877211f5 TI |
3116 | static struct page *snd_pcm_mmap_data_nopage(struct vm_area_struct *area, |
3117 | unsigned long address, int *type) | |
1da177e4 | 3118 | { |
877211f5 TI |
3119 | struct snd_pcm_substream *substream = area->vm_private_data; |
3120 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3121 | unsigned long offset; |
3122 | struct page * page; | |
3123 | void *vaddr; | |
3124 | size_t dma_bytes; | |
3125 | ||
3126 | if (substream == NULL) | |
cd54e7e5 | 3127 | return NOPAGE_SIGBUS; |
1da177e4 LT |
3128 | runtime = substream->runtime; |
3129 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3130 | offset += address - area->vm_start; | |
cd54e7e5 | 3131 | snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_SIGBUS); |
1da177e4 LT |
3132 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
3133 | if (offset > dma_bytes - PAGE_SIZE) | |
3134 | return NOPAGE_SIGBUS; | |
3135 | if (substream->ops->page) { | |
3136 | page = substream->ops->page(substream, offset); | |
3137 | if (! page) | |
cd54e7e5 | 3138 | return NOPAGE_OOM; /* XXX: is this really due to OOM? */ |
1da177e4 LT |
3139 | } else { |
3140 | vaddr = runtime->dma_area + offset; | |
3141 | page = virt_to_page(vaddr); | |
3142 | } | |
b5810039 | 3143 | get_page(page); |
1da177e4 LT |
3144 | if (type) |
3145 | *type = VM_FAULT_MINOR; | |
3146 | return page; | |
3147 | } | |
3148 | ||
3149 | static struct vm_operations_struct snd_pcm_vm_ops_data = | |
3150 | { | |
3151 | .open = snd_pcm_mmap_data_open, | |
3152 | .close = snd_pcm_mmap_data_close, | |
3153 | .nopage = snd_pcm_mmap_data_nopage, | |
3154 | }; | |
3155 | ||
3156 | /* | |
3157 | * mmap the DMA buffer on RAM | |
3158 | */ | |
877211f5 TI |
3159 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3160 | struct vm_area_struct *area) | |
1da177e4 LT |
3161 | { |
3162 | area->vm_ops = &snd_pcm_vm_ops_data; | |
3163 | area->vm_private_data = substream; | |
3164 | area->vm_flags |= VM_RESERVED; | |
9c323fcb | 3165 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3166 | return 0; |
3167 | } | |
3168 | ||
3169 | /* | |
3170 | * mmap the DMA buffer on I/O memory area | |
3171 | */ | |
3172 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
3173 | static struct vm_operations_struct snd_pcm_vm_ops_data_mmio = | |
3174 | { | |
3175 | .open = snd_pcm_mmap_data_open, | |
3176 | .close = snd_pcm_mmap_data_close, | |
3177 | }; | |
3178 | ||
877211f5 TI |
3179 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3180 | struct vm_area_struct *area) | |
1da177e4 LT |
3181 | { |
3182 | long size; | |
3183 | unsigned long offset; | |
3184 | ||
3185 | #ifdef pgprot_noncached | |
3186 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3187 | #endif | |
3188 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; | |
3189 | area->vm_private_data = substream; | |
3190 | area->vm_flags |= VM_IO; | |
3191 | size = area->vm_end - area->vm_start; | |
3192 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3193 | if (io_remap_pfn_range(area, area->vm_start, | |
3194 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3195 | size, area->vm_page_prot)) | |
3196 | return -EAGAIN; | |
9c323fcb | 3197 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3198 | return 0; |
3199 | } | |
e88e8ae6 TI |
3200 | |
3201 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3202 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3203 | ||
3204 | /* | |
3205 | * mmap DMA buffer | |
3206 | */ | |
877211f5 | 3207 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3208 | struct vm_area_struct *area) |
3209 | { | |
877211f5 | 3210 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3211 | long size; |
3212 | unsigned long offset; | |
3213 | size_t dma_bytes; | |
3214 | ||
3215 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3216 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3217 | return -EINVAL; | |
3218 | } else { | |
3219 | if (!(area->vm_flags & VM_READ)) | |
3220 | return -EINVAL; | |
3221 | } | |
3222 | runtime = substream->runtime; | |
3223 | snd_assert(runtime != NULL, return -EAGAIN); | |
3224 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
3225 | return -EBADFD; | |
3226 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3227 | return -ENXIO; | |
3228 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3229 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3230 | return -EINVAL; | |
3231 | size = area->vm_end - area->vm_start; | |
3232 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3233 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3234 | if ((size_t)size > dma_bytes) | |
3235 | return -EINVAL; | |
3236 | if (offset > dma_bytes - size) | |
3237 | return -EINVAL; | |
3238 | ||
3239 | if (substream->ops->mmap) | |
3240 | return substream->ops->mmap(substream, area); | |
3241 | else | |
3242 | return snd_pcm_default_mmap(substream, area); | |
3243 | } | |
3244 | ||
e88e8ae6 TI |
3245 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3246 | ||
1da177e4 LT |
3247 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3248 | { | |
877211f5 TI |
3249 | struct snd_pcm_file * pcm_file; |
3250 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3251 | unsigned long offset; |
3252 | ||
3253 | pcm_file = file->private_data; | |
3254 | substream = pcm_file->substream; | |
3255 | snd_assert(substream != NULL, return -ENXIO); | |
3256 | ||
3257 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3258 | switch (offset) { | |
3259 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
548a648b | 3260 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3261 | return -ENXIO; |
3262 | return snd_pcm_mmap_status(substream, file, area); | |
3263 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
548a648b | 3264 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3265 | return -ENXIO; |
3266 | return snd_pcm_mmap_control(substream, file, area); | |
3267 | default: | |
3268 | return snd_pcm_mmap_data(substream, file, area); | |
3269 | } | |
3270 | return 0; | |
3271 | } | |
3272 | ||
3273 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3274 | { | |
877211f5 TI |
3275 | struct snd_pcm_file * pcm_file; |
3276 | struct snd_pcm_substream *substream; | |
3277 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3278 | int err; |
3279 | ||
3280 | pcm_file = file->private_data; | |
3281 | substream = pcm_file->substream; | |
3282 | snd_assert(substream != NULL, return -ENXIO); | |
3283 | runtime = substream->runtime; | |
3284 | ||
3285 | err = fasync_helper(fd, file, on, &runtime->fasync); | |
3286 | if (err < 0) | |
3287 | return err; | |
3288 | return 0; | |
3289 | } | |
3290 | ||
3291 | /* | |
3292 | * ioctl32 compat | |
3293 | */ | |
3294 | #ifdef CONFIG_COMPAT | |
3295 | #include "pcm_compat.c" | |
3296 | #else | |
3297 | #define snd_pcm_ioctl_compat NULL | |
3298 | #endif | |
3299 | ||
3300 | /* | |
3301 | * To be removed helpers to keep binary compatibility | |
3302 | */ | |
3303 | ||
59d48582 | 3304 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3305 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3306 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3307 | ||
877211f5 TI |
3308 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3309 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3310 | { |
3311 | unsigned int i; | |
3312 | ||
3313 | memset(params, 0, sizeof(*params)); | |
3314 | params->flags = oparams->flags; | |
3315 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3316 | params->masks[i].bits[0] = oparams->masks[i]; | |
3317 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3318 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3319 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3320 | params->info = oparams->info; | |
3321 | params->msbits = oparams->msbits; | |
3322 | params->rate_num = oparams->rate_num; | |
3323 | params->rate_den = oparams->rate_den; | |
3324 | params->fifo_size = oparams->fifo_size; | |
3325 | } | |
3326 | ||
877211f5 TI |
3327 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3328 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3329 | { |
3330 | unsigned int i; | |
3331 | ||
3332 | memset(oparams, 0, sizeof(*oparams)); | |
3333 | oparams->flags = params->flags; | |
3334 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3335 | oparams->masks[i] = params->masks[i].bits[0]; | |
3336 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3337 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3338 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3339 | oparams->info = params->info; | |
3340 | oparams->msbits = params->msbits; | |
3341 | oparams->rate_num = params->rate_num; | |
3342 | oparams->rate_den = params->rate_den; | |
3343 | oparams->fifo_size = params->fifo_size; | |
3344 | } | |
3345 | ||
877211f5 TI |
3346 | static int snd_pcm_hw_refine_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 | ||
3364 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3365 | err = -EFAULT; | |
3366 | goto out; | |
3367 | } | |
3368 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3369 | err = snd_pcm_hw_refine(substream, params); | |
3370 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3371 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3372 | if (!err) | |
3373 | err = -EFAULT; | |
3374 | } | |
3375 | out: | |
3376 | kfree(params); | |
3377 | kfree(oparams); | |
3378 | return err; | |
3379 | } | |
3380 | ||
877211f5 TI |
3381 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3382 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3383 | { |
877211f5 TI |
3384 | struct snd_pcm_hw_params *params; |
3385 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3386 | int err; |
3387 | ||
3388 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3389 | if (!params) { | |
3390 | err = -ENOMEM; | |
3391 | goto out; | |
3392 | } | |
3393 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3394 | if (!oparams) { | |
3395 | err = -ENOMEM; | |
3396 | goto out; | |
3397 | } | |
3398 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3399 | err = -EFAULT; | |
3400 | goto out; | |
3401 | } | |
3402 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3403 | err = snd_pcm_hw_params(substream, params); | |
3404 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3405 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3406 | if (!err) | |
3407 | err = -EFAULT; | |
3408 | } | |
3409 | out: | |
3410 | kfree(params); | |
3411 | kfree(oparams); | |
3412 | return err; | |
3413 | } | |
59d48582 | 3414 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 LT |
3415 | |
3416 | /* | |
3417 | * Register section | |
3418 | */ | |
3419 | ||
9c2e08c5 | 3420 | const struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3421 | { |
2af677fc CL |
3422 | .owner = THIS_MODULE, |
3423 | .write = snd_pcm_write, | |
ee0b3e67 | 3424 | .aio_write = snd_pcm_aio_write, |
f87135f5 | 3425 | .open = snd_pcm_playback_open, |
2af677fc CL |
3426 | .release = snd_pcm_release, |
3427 | .poll = snd_pcm_playback_poll, | |
3428 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3429 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3430 | .mmap = snd_pcm_mmap, | |
3431 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3432 | }, |
3433 | { | |
2af677fc CL |
3434 | .owner = THIS_MODULE, |
3435 | .read = snd_pcm_read, | |
ee0b3e67 | 3436 | .aio_read = snd_pcm_aio_read, |
f87135f5 | 3437 | .open = snd_pcm_capture_open, |
2af677fc CL |
3438 | .release = snd_pcm_release, |
3439 | .poll = snd_pcm_capture_poll, | |
3440 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3441 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3442 | .mmap = snd_pcm_mmap, | |
3443 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3444 | } |
3445 | }; |