Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Digital Audio (PCM) abstract layer | |
c1017a4c | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
4 | * |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
1da177e4 | 22 | #include <linux/mm.h> |
1da177e4 LT |
23 | #include <linux/file.h> |
24 | #include <linux/slab.h> | |
25 | #include <linux/time.h> | |
f011e2e2 | 26 | #include <linux/pm_qos_params.h> |
1da177e4 LT |
27 | #include <linux/uio.h> |
28 | #include <sound/core.h> | |
29 | #include <sound/control.h> | |
30 | #include <sound/info.h> | |
31 | #include <sound/pcm.h> | |
32 | #include <sound/pcm_params.h> | |
33 | #include <sound/timer.h> | |
34 | #include <sound/minors.h> | |
35 | #include <asm/io.h> | |
36 | ||
37 | /* | |
38 | * Compatibility | |
39 | */ | |
40 | ||
877211f5 | 41 | struct snd_pcm_hw_params_old { |
1da177e4 LT |
42 | unsigned int flags; |
43 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - | |
44 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; | |
877211f5 | 45 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
1da177e4 LT |
46 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS + 1]; |
47 | unsigned int rmask; | |
48 | unsigned int cmask; | |
49 | unsigned int info; | |
50 | unsigned int msbits; | |
51 | unsigned int rate_num; | |
52 | unsigned int rate_den; | |
877211f5 | 53 | snd_pcm_uframes_t fifo_size; |
1da177e4 LT |
54 | unsigned char reserved[64]; |
55 | }; | |
56 | ||
59d48582 | 57 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
877211f5 TI |
58 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
59 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) | |
1da177e4 | 60 | |
877211f5 TI |
61 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
62 | struct snd_pcm_hw_params_old __user * _oparams); | |
63 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, | |
64 | struct snd_pcm_hw_params_old __user * _oparams); | |
59d48582 | 65 | #endif |
f87135f5 | 66 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream); |
1da177e4 LT |
67 | |
68 | /* | |
69 | * | |
70 | */ | |
71 | ||
72 | DEFINE_RWLOCK(snd_pcm_link_rwlock); | |
e88e8ae6 | 73 | EXPORT_SYMBOL(snd_pcm_link_rwlock); |
1da177e4 | 74 | |
e88e8ae6 | 75 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
1da177e4 LT |
76 | |
77 | static inline mm_segment_t snd_enter_user(void) | |
78 | { | |
79 | mm_segment_t fs = get_fs(); | |
80 | set_fs(get_ds()); | |
81 | return fs; | |
82 | } | |
83 | ||
84 | static inline void snd_leave_user(mm_segment_t fs) | |
85 | { | |
86 | set_fs(fs); | |
87 | } | |
88 | ||
89 | ||
90 | ||
877211f5 | 91 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
1da177e4 | 92 | { |
877211f5 TI |
93 | struct snd_pcm_runtime *runtime; |
94 | struct snd_pcm *pcm = substream->pcm; | |
95 | struct snd_pcm_str *pstr = substream->pstr; | |
1da177e4 LT |
96 | |
97 | snd_assert(substream != NULL, return -ENXIO); | |
98 | memset(info, 0, sizeof(*info)); | |
99 | info->card = pcm->card->number; | |
100 | info->device = pcm->device; | |
101 | info->stream = substream->stream; | |
102 | info->subdevice = substream->number; | |
103 | strlcpy(info->id, pcm->id, sizeof(info->id)); | |
104 | strlcpy(info->name, pcm->name, sizeof(info->name)); | |
105 | info->dev_class = pcm->dev_class; | |
106 | info->dev_subclass = pcm->dev_subclass; | |
107 | info->subdevices_count = pstr->substream_count; | |
108 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; | |
109 | strlcpy(info->subname, substream->name, sizeof(info->subname)); | |
110 | runtime = substream->runtime; | |
111 | /* AB: FIXME!!! This is definitely nonsense */ | |
112 | if (runtime) { | |
113 | info->sync = runtime->sync; | |
114 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); | |
115 | } | |
116 | return 0; | |
117 | } | |
118 | ||
877211f5 TI |
119 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
120 | struct snd_pcm_info __user * _info) | |
1da177e4 | 121 | { |
877211f5 | 122 | struct snd_pcm_info *info; |
1da177e4 LT |
123 | int err; |
124 | ||
125 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
126 | if (! info) | |
127 | return -ENOMEM; | |
128 | err = snd_pcm_info(substream, info); | |
129 | if (err >= 0) { | |
130 | if (copy_to_user(_info, info, sizeof(*info))) | |
131 | err = -EFAULT; | |
132 | } | |
133 | kfree(info); | |
134 | return err; | |
135 | } | |
136 | ||
137 | #undef RULES_DEBUG | |
138 | ||
139 | #ifdef RULES_DEBUG | |
140 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v | |
141 | char *snd_pcm_hw_param_names[] = { | |
142 | HW_PARAM(ACCESS), | |
143 | HW_PARAM(FORMAT), | |
144 | HW_PARAM(SUBFORMAT), | |
145 | HW_PARAM(SAMPLE_BITS), | |
146 | HW_PARAM(FRAME_BITS), | |
147 | HW_PARAM(CHANNELS), | |
148 | HW_PARAM(RATE), | |
149 | HW_PARAM(PERIOD_TIME), | |
150 | HW_PARAM(PERIOD_SIZE), | |
151 | HW_PARAM(PERIOD_BYTES), | |
152 | HW_PARAM(PERIODS), | |
153 | HW_PARAM(BUFFER_TIME), | |
154 | HW_PARAM(BUFFER_SIZE), | |
155 | HW_PARAM(BUFFER_BYTES), | |
156 | HW_PARAM(TICK_TIME), | |
157 | }; | |
158 | #endif | |
159 | ||
877211f5 TI |
160 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
161 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
162 | { |
163 | unsigned int k; | |
877211f5 TI |
164 | struct snd_pcm_hardware *hw; |
165 | struct snd_interval *i = NULL; | |
166 | struct snd_mask *m = NULL; | |
167 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; | |
1da177e4 LT |
168 | unsigned int rstamps[constrs->rules_num]; |
169 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; | |
170 | unsigned int stamp = 2; | |
171 | int changed, again; | |
172 | ||
173 | params->info = 0; | |
174 | params->fifo_size = 0; | |
175 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) | |
176 | params->msbits = 0; | |
177 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { | |
178 | params->rate_num = 0; | |
179 | params->rate_den = 0; | |
180 | } | |
181 | ||
182 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
183 | m = hw_param_mask(params, k); | |
184 | if (snd_mask_empty(m)) | |
185 | return -EINVAL; | |
186 | if (!(params->rmask & (1 << k))) | |
187 | continue; | |
188 | #ifdef RULES_DEBUG | |
189 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
190 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
191 | #endif | |
192 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); | |
193 | #ifdef RULES_DEBUG | |
194 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
195 | #endif | |
196 | if (changed) | |
197 | params->cmask |= 1 << k; | |
198 | if (changed < 0) | |
199 | return changed; | |
200 | } | |
201 | ||
202 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
203 | i = hw_param_interval(params, k); | |
204 | if (snd_interval_empty(i)) | |
205 | return -EINVAL; | |
206 | if (!(params->rmask & (1 << k))) | |
207 | continue; | |
208 | #ifdef RULES_DEBUG | |
209 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
210 | if (i->empty) | |
211 | printk("empty"); | |
212 | else | |
213 | printk("%c%u %u%c", | |
214 | i->openmin ? '(' : '[', i->min, | |
215 | i->max, i->openmax ? ')' : ']'); | |
216 | printk(" -> "); | |
217 | #endif | |
218 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); | |
219 | #ifdef RULES_DEBUG | |
220 | if (i->empty) | |
221 | printk("empty\n"); | |
222 | else | |
223 | printk("%c%u %u%c\n", | |
224 | i->openmin ? '(' : '[', i->min, | |
225 | i->max, i->openmax ? ')' : ']'); | |
226 | #endif | |
227 | if (changed) | |
228 | params->cmask |= 1 << k; | |
229 | if (changed < 0) | |
230 | return changed; | |
231 | } | |
232 | ||
233 | for (k = 0; k < constrs->rules_num; k++) | |
234 | rstamps[k] = 0; | |
235 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) | |
236 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; | |
237 | do { | |
238 | again = 0; | |
239 | for (k = 0; k < constrs->rules_num; k++) { | |
877211f5 | 240 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
1da177e4 LT |
241 | unsigned int d; |
242 | int doit = 0; | |
243 | if (r->cond && !(r->cond & params->flags)) | |
244 | continue; | |
245 | for (d = 0; r->deps[d] >= 0; d++) { | |
246 | if (vstamps[r->deps[d]] > rstamps[k]) { | |
247 | doit = 1; | |
248 | break; | |
249 | } | |
250 | } | |
251 | if (!doit) | |
252 | continue; | |
253 | #ifdef RULES_DEBUG | |
254 | printk("Rule %d [%p]: ", k, r->func); | |
255 | if (r->var >= 0) { | |
256 | printk("%s = ", snd_pcm_hw_param_names[r->var]); | |
257 | if (hw_is_mask(r->var)) { | |
258 | m = hw_param_mask(params, r->var); | |
259 | printk("%x", *m->bits); | |
260 | } else { | |
261 | i = hw_param_interval(params, r->var); | |
262 | if (i->empty) | |
263 | printk("empty"); | |
264 | else | |
265 | printk("%c%u %u%c", | |
266 | i->openmin ? '(' : '[', i->min, | |
267 | i->max, i->openmax ? ')' : ']'); | |
268 | } | |
269 | } | |
270 | #endif | |
271 | changed = r->func(params, r); | |
272 | #ifdef RULES_DEBUG | |
273 | if (r->var >= 0) { | |
274 | printk(" -> "); | |
275 | if (hw_is_mask(r->var)) | |
276 | printk("%x", *m->bits); | |
277 | else { | |
278 | if (i->empty) | |
279 | printk("empty"); | |
280 | else | |
281 | printk("%c%u %u%c", | |
282 | i->openmin ? '(' : '[', i->min, | |
283 | i->max, i->openmax ? ')' : ']'); | |
284 | } | |
285 | } | |
286 | printk("\n"); | |
287 | #endif | |
288 | rstamps[k] = stamp; | |
289 | if (changed && r->var >= 0) { | |
290 | params->cmask |= (1 << r->var); | |
291 | vstamps[r->var] = stamp; | |
292 | again = 1; | |
293 | } | |
294 | if (changed < 0) | |
295 | return changed; | |
296 | stamp++; | |
297 | } | |
298 | } while (again); | |
299 | if (!params->msbits) { | |
300 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); | |
301 | if (snd_interval_single(i)) | |
302 | params->msbits = snd_interval_value(i); | |
303 | } | |
304 | ||
305 | if (!params->rate_den) { | |
306 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
307 | if (snd_interval_single(i)) { | |
308 | params->rate_num = snd_interval_value(i); | |
309 | params->rate_den = 1; | |
310 | } | |
311 | } | |
312 | ||
313 | hw = &substream->runtime->hw; | |
314 | if (!params->info) | |
315 | params->info = hw->info; | |
316 | if (!params->fifo_size) | |
317 | params->fifo_size = hw->fifo_size; | |
318 | params->rmask = 0; | |
319 | return 0; | |
320 | } | |
321 | ||
e88e8ae6 TI |
322 | EXPORT_SYMBOL(snd_pcm_hw_refine); |
323 | ||
877211f5 TI |
324 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
325 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 326 | { |
877211f5 | 327 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
328 | int err; |
329 | ||
330 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
331 | if (!params) { | |
332 | err = -ENOMEM; | |
333 | goto out; | |
334 | } | |
335 | if (copy_from_user(params, _params, sizeof(*params))) { | |
336 | err = -EFAULT; | |
337 | goto out; | |
338 | } | |
339 | err = snd_pcm_hw_refine(substream, params); | |
340 | if (copy_to_user(_params, params, sizeof(*params))) { | |
341 | if (!err) | |
342 | err = -EFAULT; | |
343 | } | |
344 | out: | |
345 | kfree(params); | |
346 | return err; | |
347 | } | |
348 | ||
9442e691 TI |
349 | static int period_to_usecs(struct snd_pcm_runtime *runtime) |
350 | { | |
351 | int usecs; | |
352 | ||
353 | if (! runtime->rate) | |
354 | return -1; /* invalid */ | |
355 | ||
356 | /* take 75% of period time as the deadline */ | |
357 | usecs = (750000 / runtime->rate) * runtime->period_size; | |
358 | usecs += ((750000 % runtime->rate) * runtime->period_size) / | |
359 | runtime->rate; | |
360 | ||
361 | return usecs; | |
362 | } | |
363 | ||
877211f5 TI |
364 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
365 | struct snd_pcm_hw_params *params) | |
1da177e4 | 366 | { |
877211f5 | 367 | struct snd_pcm_runtime *runtime; |
9442e691 | 368 | int err, usecs; |
1da177e4 LT |
369 | unsigned int bits; |
370 | snd_pcm_uframes_t frames; | |
371 | ||
372 | snd_assert(substream != NULL, return -ENXIO); | |
373 | runtime = substream->runtime; | |
374 | snd_assert(runtime != NULL, return -ENXIO); | |
375 | snd_pcm_stream_lock_irq(substream); | |
376 | switch (runtime->status->state) { | |
377 | case SNDRV_PCM_STATE_OPEN: | |
378 | case SNDRV_PCM_STATE_SETUP: | |
379 | case SNDRV_PCM_STATE_PREPARED: | |
380 | break; | |
381 | default: | |
382 | snd_pcm_stream_unlock_irq(substream); | |
383 | return -EBADFD; | |
384 | } | |
385 | snd_pcm_stream_unlock_irq(substream); | |
386 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
387 | if (!substream->oss.oss) | |
388 | #endif | |
9c323fcb | 389 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
390 | return -EBADFD; |
391 | ||
392 | params->rmask = ~0U; | |
393 | err = snd_pcm_hw_refine(substream, params); | |
394 | if (err < 0) | |
395 | goto _error; | |
396 | ||
397 | err = snd_pcm_hw_params_choose(substream, params); | |
398 | if (err < 0) | |
399 | goto _error; | |
400 | ||
401 | if (substream->ops->hw_params != NULL) { | |
402 | err = substream->ops->hw_params(substream, params); | |
403 | if (err < 0) | |
404 | goto _error; | |
405 | } | |
406 | ||
407 | runtime->access = params_access(params); | |
408 | runtime->format = params_format(params); | |
409 | runtime->subformat = params_subformat(params); | |
410 | runtime->channels = params_channels(params); | |
411 | runtime->rate = params_rate(params); | |
412 | runtime->period_size = params_period_size(params); | |
413 | runtime->periods = params_periods(params); | |
414 | runtime->buffer_size = params_buffer_size(params); | |
1da177e4 LT |
415 | runtime->info = params->info; |
416 | runtime->rate_num = params->rate_num; | |
417 | runtime->rate_den = params->rate_den; | |
418 | ||
419 | bits = snd_pcm_format_physical_width(runtime->format); | |
420 | runtime->sample_bits = bits; | |
421 | bits *= runtime->channels; | |
422 | runtime->frame_bits = bits; | |
423 | frames = 1; | |
424 | while (bits % 8 != 0) { | |
425 | bits *= 2; | |
426 | frames *= 2; | |
427 | } | |
428 | runtime->byte_align = bits / 8; | |
429 | runtime->min_align = frames; | |
430 | ||
431 | /* Default sw params */ | |
432 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
433 | runtime->period_step = 1; | |
1da177e4 | 434 | runtime->control->avail_min = runtime->period_size; |
1da177e4 LT |
435 | runtime->start_threshold = 1; |
436 | runtime->stop_threshold = runtime->buffer_size; | |
437 | runtime->silence_threshold = 0; | |
438 | runtime->silence_size = 0; | |
439 | runtime->boundary = runtime->buffer_size; | |
440 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
441 | runtime->boundary *= 2; | |
442 | ||
443 | snd_pcm_timer_resolution_change(substream); | |
444 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
9442e691 | 445 | |
f011e2e2 MG |
446 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, |
447 | substream->latency_id); | |
9442e691 | 448 | if ((usecs = period_to_usecs(runtime)) >= 0) |
f011e2e2 MG |
449 | pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, |
450 | substream->latency_id, usecs); | |
1da177e4 LT |
451 | return 0; |
452 | _error: | |
453 | /* hardware might be unuseable from this time, | |
454 | so we force application to retry to set | |
455 | the correct hardware parameter settings */ | |
456 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
457 | if (substream->ops->hw_free != NULL) | |
458 | substream->ops->hw_free(substream); | |
459 | return err; | |
460 | } | |
461 | ||
877211f5 TI |
462 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
463 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 464 | { |
877211f5 | 465 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
466 | int err; |
467 | ||
468 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
469 | if (!params) { | |
470 | err = -ENOMEM; | |
471 | goto out; | |
472 | } | |
473 | if (copy_from_user(params, _params, sizeof(*params))) { | |
474 | err = -EFAULT; | |
475 | goto out; | |
476 | } | |
477 | err = snd_pcm_hw_params(substream, params); | |
478 | if (copy_to_user(_params, params, sizeof(*params))) { | |
479 | if (!err) | |
480 | err = -EFAULT; | |
481 | } | |
482 | out: | |
483 | kfree(params); | |
484 | return err; | |
485 | } | |
486 | ||
877211f5 | 487 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 488 | { |
877211f5 | 489 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
490 | int result = 0; |
491 | ||
492 | snd_assert(substream != NULL, return -ENXIO); | |
493 | runtime = substream->runtime; | |
494 | snd_assert(runtime != NULL, return -ENXIO); | |
495 | snd_pcm_stream_lock_irq(substream); | |
496 | switch (runtime->status->state) { | |
497 | case SNDRV_PCM_STATE_SETUP: | |
498 | case SNDRV_PCM_STATE_PREPARED: | |
499 | break; | |
500 | default: | |
501 | snd_pcm_stream_unlock_irq(substream); | |
502 | return -EBADFD; | |
503 | } | |
504 | snd_pcm_stream_unlock_irq(substream); | |
9c323fcb | 505 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
506 | return -EBADFD; |
507 | if (substream->ops->hw_free) | |
508 | result = substream->ops->hw_free(substream); | |
509 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
f011e2e2 MG |
510 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, |
511 | substream->latency_id); | |
1da177e4 LT |
512 | return result; |
513 | } | |
514 | ||
877211f5 TI |
515 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
516 | struct snd_pcm_sw_params *params) | |
1da177e4 | 517 | { |
877211f5 | 518 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
519 | |
520 | snd_assert(substream != NULL, return -ENXIO); | |
521 | runtime = substream->runtime; | |
522 | snd_assert(runtime != NULL, return -ENXIO); | |
523 | snd_pcm_stream_lock_irq(substream); | |
524 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
525 | snd_pcm_stream_unlock_irq(substream); | |
526 | return -EBADFD; | |
527 | } | |
528 | snd_pcm_stream_unlock_irq(substream); | |
529 | ||
530 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
531 | return -EINVAL; | |
532 | if (params->avail_min == 0) | |
533 | return -EINVAL; | |
1da177e4 LT |
534 | if (params->silence_size >= runtime->boundary) { |
535 | if (params->silence_threshold != 0) | |
536 | return -EINVAL; | |
537 | } else { | |
538 | if (params->silence_size > params->silence_threshold) | |
539 | return -EINVAL; | |
540 | if (params->silence_threshold > runtime->buffer_size) | |
541 | return -EINVAL; | |
542 | } | |
543 | snd_pcm_stream_lock_irq(substream); | |
544 | runtime->tstamp_mode = params->tstamp_mode; | |
1da177e4 LT |
545 | runtime->period_step = params->period_step; |
546 | runtime->control->avail_min = params->avail_min; | |
547 | runtime->start_threshold = params->start_threshold; | |
548 | runtime->stop_threshold = params->stop_threshold; | |
549 | runtime->silence_threshold = params->silence_threshold; | |
550 | runtime->silence_size = params->silence_size; | |
1da177e4 LT |
551 | params->boundary = runtime->boundary; |
552 | if (snd_pcm_running(substream)) { | |
1da177e4 LT |
553 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
554 | runtime->silence_size > 0) | |
555 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
556 | wake_up(&runtime->sleep); | |
557 | } | |
558 | snd_pcm_stream_unlock_irq(substream); | |
559 | return 0; | |
560 | } | |
561 | ||
877211f5 TI |
562 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
563 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 564 | { |
877211f5 | 565 | struct snd_pcm_sw_params params; |
1da177e4 LT |
566 | int err; |
567 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
568 | return -EFAULT; | |
569 | err = snd_pcm_sw_params(substream, ¶ms); | |
570 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
571 | return -EFAULT; | |
572 | return err; | |
573 | } | |
574 | ||
877211f5 TI |
575 | int snd_pcm_status(struct snd_pcm_substream *substream, |
576 | struct snd_pcm_status *status) | |
1da177e4 | 577 | { |
877211f5 | 578 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
579 | |
580 | snd_pcm_stream_lock_irq(substream); | |
581 | status->state = runtime->status->state; | |
582 | status->suspended_state = runtime->status->suspended_state; | |
583 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
584 | goto _end; | |
585 | status->trigger_tstamp = runtime->trigger_tstamp; | |
8c121586 | 586 | if (snd_pcm_running(substream)) { |
1da177e4 | 587 | snd_pcm_update_hw_ptr(substream); |
8c121586 JK |
588 | if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) { |
589 | status->tstamp = runtime->status->tstamp; | |
590 | goto _tstamp_end; | |
591 | } | |
592 | } | |
a713b583 | 593 | snd_pcm_gettime(runtime, &status->tstamp); |
8c121586 | 594 | _tstamp_end: |
1da177e4 LT |
595 | status->appl_ptr = runtime->control->appl_ptr; |
596 | status->hw_ptr = runtime->status->hw_ptr; | |
597 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
598 | status->avail = snd_pcm_playback_avail(runtime); | |
599 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
600 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
601 | status->delay = runtime->buffer_size - status->avail; | |
602 | else | |
603 | status->delay = 0; | |
604 | } else { | |
605 | status->avail = snd_pcm_capture_avail(runtime); | |
606 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
607 | status->delay = status->avail; | |
608 | else | |
609 | status->delay = 0; | |
610 | } | |
611 | status->avail_max = runtime->avail_max; | |
612 | status->overrange = runtime->overrange; | |
613 | runtime->avail_max = 0; | |
614 | runtime->overrange = 0; | |
615 | _end: | |
616 | snd_pcm_stream_unlock_irq(substream); | |
617 | return 0; | |
618 | } | |
619 | ||
877211f5 TI |
620 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
621 | struct snd_pcm_status __user * _status) | |
1da177e4 | 622 | { |
877211f5 TI |
623 | struct snd_pcm_status status; |
624 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
625 | int res; |
626 | ||
627 | snd_assert(substream != NULL, return -ENXIO); | |
628 | runtime = substream->runtime; | |
629 | memset(&status, 0, sizeof(status)); | |
630 | res = snd_pcm_status(substream, &status); | |
631 | if (res < 0) | |
632 | return res; | |
633 | if (copy_to_user(_status, &status, sizeof(status))) | |
634 | return -EFAULT; | |
635 | return 0; | |
636 | } | |
637 | ||
877211f5 TI |
638 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
639 | struct snd_pcm_channel_info * info) | |
1da177e4 | 640 | { |
877211f5 | 641 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
642 | unsigned int channel; |
643 | ||
644 | snd_assert(substream != NULL, return -ENXIO); | |
645 | channel = info->channel; | |
646 | runtime = substream->runtime; | |
647 | snd_pcm_stream_lock_irq(substream); | |
648 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
649 | snd_pcm_stream_unlock_irq(substream); | |
650 | return -EBADFD; | |
651 | } | |
652 | snd_pcm_stream_unlock_irq(substream); | |
653 | if (channel >= runtime->channels) | |
654 | return -EINVAL; | |
655 | memset(info, 0, sizeof(*info)); | |
656 | info->channel = channel; | |
657 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
658 | } | |
659 | ||
877211f5 TI |
660 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
661 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 662 | { |
877211f5 | 663 | struct snd_pcm_channel_info info; |
1da177e4 LT |
664 | int res; |
665 | ||
666 | if (copy_from_user(&info, _info, sizeof(info))) | |
667 | return -EFAULT; | |
668 | res = snd_pcm_channel_info(substream, &info); | |
669 | if (res < 0) | |
670 | return res; | |
671 | if (copy_to_user(_info, &info, sizeof(info))) | |
672 | return -EFAULT; | |
673 | return 0; | |
674 | } | |
675 | ||
877211f5 | 676 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 677 | { |
877211f5 | 678 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
679 | if (runtime->trigger_master == NULL) |
680 | return; | |
681 | if (runtime->trigger_master == substream) { | |
b751eef1 | 682 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); |
1da177e4 LT |
683 | } else { |
684 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
685 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
686 | } | |
687 | runtime->trigger_master = NULL; | |
688 | } | |
689 | ||
690 | struct action_ops { | |
877211f5 TI |
691 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
692 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
693 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
694 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
695 | }; |
696 | ||
697 | /* | |
698 | * this functions is core for handling of linked stream | |
699 | * Note: the stream state might be changed also on failure | |
700 | * Note2: call with calling stream lock + link lock | |
701 | */ | |
702 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 703 | struct snd_pcm_substream *substream, |
1da177e4 LT |
704 | int state, int do_lock) |
705 | { | |
877211f5 TI |
706 | struct snd_pcm_substream *s = NULL; |
707 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
708 | int res = 0; |
709 | ||
ef991b95 | 710 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 711 | if (do_lock && s != substream) |
208eee2a FD |
712 | spin_lock_nested(&s->self_group.lock, |
713 | SINGLE_DEPTH_NESTING); | |
1da177e4 LT |
714 | res = ops->pre_action(s, state); |
715 | if (res < 0) | |
716 | goto _unlock; | |
717 | } | |
ef991b95 | 718 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
719 | res = ops->do_action(s, state); |
720 | if (res < 0) { | |
721 | if (ops->undo_action) { | |
ef991b95 | 722 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
723 | if (s1 == s) /* failed stream */ |
724 | break; | |
725 | ops->undo_action(s1, state); | |
726 | } | |
727 | } | |
728 | s = NULL; /* unlock all */ | |
729 | goto _unlock; | |
730 | } | |
731 | } | |
ef991b95 | 732 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
733 | ops->post_action(s, state); |
734 | } | |
735 | _unlock: | |
736 | if (do_lock) { | |
737 | /* unlock streams */ | |
ef991b95 | 738 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
739 | if (s1 != substream) |
740 | spin_unlock(&s1->self_group.lock); | |
741 | if (s1 == s) /* end */ | |
742 | break; | |
743 | } | |
744 | } | |
745 | return res; | |
746 | } | |
747 | ||
748 | /* | |
749 | * Note: call with stream lock | |
750 | */ | |
751 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 752 | struct snd_pcm_substream *substream, |
1da177e4 LT |
753 | int state) |
754 | { | |
755 | int res; | |
756 | ||
757 | res = ops->pre_action(substream, state); | |
758 | if (res < 0) | |
759 | return res; | |
760 | res = ops->do_action(substream, state); | |
761 | if (res == 0) | |
762 | ops->post_action(substream, state); | |
763 | else if (ops->undo_action) | |
764 | ops->undo_action(substream, state); | |
765 | return res; | |
766 | } | |
767 | ||
768 | /* | |
769 | * Note: call with stream lock | |
770 | */ | |
771 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 772 | struct snd_pcm_substream *substream, |
1da177e4 LT |
773 | int state) |
774 | { | |
775 | int res; | |
776 | ||
777 | if (snd_pcm_stream_linked(substream)) { | |
778 | if (!spin_trylock(&substream->group->lock)) { | |
779 | spin_unlock(&substream->self_group.lock); | |
780 | spin_lock(&substream->group->lock); | |
781 | spin_lock(&substream->self_group.lock); | |
782 | } | |
783 | res = snd_pcm_action_group(ops, substream, state, 1); | |
784 | spin_unlock(&substream->group->lock); | |
785 | } else { | |
786 | res = snd_pcm_action_single(ops, substream, state); | |
787 | } | |
788 | return res; | |
789 | } | |
790 | ||
791 | /* | |
792 | * Note: don't use any locks before | |
793 | */ | |
794 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 795 | struct snd_pcm_substream *substream, |
1da177e4 LT |
796 | int state) |
797 | { | |
798 | int res; | |
799 | ||
800 | read_lock_irq(&snd_pcm_link_rwlock); | |
801 | if (snd_pcm_stream_linked(substream)) { | |
802 | spin_lock(&substream->group->lock); | |
803 | spin_lock(&substream->self_group.lock); | |
804 | res = snd_pcm_action_group(ops, substream, state, 1); | |
805 | spin_unlock(&substream->self_group.lock); | |
806 | spin_unlock(&substream->group->lock); | |
807 | } else { | |
808 | spin_lock(&substream->self_group.lock); | |
809 | res = snd_pcm_action_single(ops, substream, state); | |
810 | spin_unlock(&substream->self_group.lock); | |
811 | } | |
812 | read_unlock_irq(&snd_pcm_link_rwlock); | |
813 | return res; | |
814 | } | |
815 | ||
816 | /* | |
817 | */ | |
818 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 819 | struct snd_pcm_substream *substream, |
1da177e4 LT |
820 | int state) |
821 | { | |
822 | int res; | |
823 | ||
824 | down_read(&snd_pcm_link_rwsem); | |
825 | if (snd_pcm_stream_linked(substream)) | |
826 | res = snd_pcm_action_group(ops, substream, state, 0); | |
827 | else | |
828 | res = snd_pcm_action_single(ops, substream, state); | |
829 | up_read(&snd_pcm_link_rwsem); | |
830 | return res; | |
831 | } | |
832 | ||
833 | /* | |
834 | * start callbacks | |
835 | */ | |
877211f5 | 836 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 837 | { |
877211f5 | 838 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
839 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
840 | return -EBADFD; | |
841 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
842 | !snd_pcm_playback_data(substream)) | |
843 | return -EPIPE; | |
844 | runtime->trigger_master = substream; | |
845 | return 0; | |
846 | } | |
847 | ||
877211f5 | 848 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
849 | { |
850 | if (substream->runtime->trigger_master != substream) | |
851 | return 0; | |
852 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
853 | } | |
854 | ||
877211f5 | 855 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
856 | { |
857 | if (substream->runtime->trigger_master == substream) | |
858 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
859 | } | |
860 | ||
877211f5 | 861 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 862 | { |
877211f5 | 863 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
864 | snd_pcm_trigger_tstamp(substream); |
865 | runtime->status->state = state; | |
866 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
867 | runtime->silence_size > 0) | |
868 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1da177e4 | 869 | if (substream->timer) |
877211f5 TI |
870 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
871 | &runtime->trigger_tstamp); | |
1da177e4 LT |
872 | } |
873 | ||
874 | static struct action_ops snd_pcm_action_start = { | |
875 | .pre_action = snd_pcm_pre_start, | |
876 | .do_action = snd_pcm_do_start, | |
877 | .undo_action = snd_pcm_undo_start, | |
878 | .post_action = snd_pcm_post_start | |
879 | }; | |
880 | ||
881 | /** | |
882 | * snd_pcm_start | |
df8db936 | 883 | * @substream: the PCM substream instance |
1da177e4 LT |
884 | * |
885 | * Start all linked streams. | |
886 | */ | |
877211f5 | 887 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 888 | { |
877211f5 TI |
889 | return snd_pcm_action(&snd_pcm_action_start, substream, |
890 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
891 | } |
892 | ||
893 | /* | |
894 | * stop callbacks | |
895 | */ | |
877211f5 | 896 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 897 | { |
877211f5 | 898 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
899 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
900 | return -EBADFD; | |
901 | runtime->trigger_master = substream; | |
902 | return 0; | |
903 | } | |
904 | ||
877211f5 | 905 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
906 | { |
907 | if (substream->runtime->trigger_master == substream && | |
908 | snd_pcm_running(substream)) | |
909 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
910 | return 0; /* unconditonally stop all substreams */ | |
911 | } | |
912 | ||
877211f5 | 913 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 914 | { |
877211f5 | 915 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
916 | if (runtime->status->state != state) { |
917 | snd_pcm_trigger_tstamp(substream); | |
918 | if (substream->timer) | |
877211f5 TI |
919 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
920 | &runtime->trigger_tstamp); | |
1da177e4 | 921 | runtime->status->state = state; |
1da177e4 LT |
922 | } |
923 | wake_up(&runtime->sleep); | |
924 | } | |
925 | ||
926 | static struct action_ops snd_pcm_action_stop = { | |
927 | .pre_action = snd_pcm_pre_stop, | |
928 | .do_action = snd_pcm_do_stop, | |
929 | .post_action = snd_pcm_post_stop | |
930 | }; | |
931 | ||
932 | /** | |
933 | * snd_pcm_stop | |
df8db936 TI |
934 | * @substream: the PCM substream instance |
935 | * @state: PCM state after stopping the stream | |
1da177e4 LT |
936 | * |
937 | * Try to stop all running streams in the substream group. | |
938 | * The state of each stream is changed to the given value after that unconditionally. | |
939 | */ | |
877211f5 | 940 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
941 | { |
942 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
943 | } | |
944 | ||
e88e8ae6 TI |
945 | EXPORT_SYMBOL(snd_pcm_stop); |
946 | ||
1da177e4 LT |
947 | /** |
948 | * snd_pcm_drain_done | |
df8db936 | 949 | * @substream: the PCM substream |
1da177e4 LT |
950 | * |
951 | * Stop the DMA only when the given stream is playback. | |
952 | * The state is changed to SETUP. | |
953 | * Unlike snd_pcm_stop(), this affects only the given stream. | |
954 | */ | |
877211f5 | 955 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 956 | { |
877211f5 TI |
957 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
958 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
959 | } |
960 | ||
961 | /* | |
962 | * pause callbacks | |
963 | */ | |
877211f5 | 964 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 965 | { |
877211f5 | 966 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
967 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
968 | return -ENOSYS; | |
969 | if (push) { | |
970 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
971 | return -EBADFD; | |
972 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
973 | return -EBADFD; | |
974 | runtime->trigger_master = substream; | |
975 | return 0; | |
976 | } | |
977 | ||
877211f5 | 978 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
979 | { |
980 | if (substream->runtime->trigger_master != substream) | |
981 | return 0; | |
982 | return substream->ops->trigger(substream, | |
983 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
984 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
985 | } | |
986 | ||
877211f5 | 987 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
988 | { |
989 | if (substream->runtime->trigger_master == substream) | |
990 | substream->ops->trigger(substream, | |
991 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
992 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
993 | } | |
994 | ||
877211f5 | 995 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 996 | { |
877211f5 | 997 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
998 | snd_pcm_trigger_tstamp(substream); |
999 | if (push) { | |
1000 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
1001 | if (substream->timer) | |
877211f5 TI |
1002 | snd_timer_notify(substream->timer, |
1003 | SNDRV_TIMER_EVENT_MPAUSE, | |
1004 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1005 | wake_up(&runtime->sleep); |
1006 | } else { | |
1007 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1da177e4 | 1008 | if (substream->timer) |
877211f5 TI |
1009 | snd_timer_notify(substream->timer, |
1010 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1011 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1012 | } |
1013 | } | |
1014 | ||
1015 | static struct action_ops snd_pcm_action_pause = { | |
1016 | .pre_action = snd_pcm_pre_pause, | |
1017 | .do_action = snd_pcm_do_pause, | |
1018 | .undo_action = snd_pcm_undo_pause, | |
1019 | .post_action = snd_pcm_post_pause | |
1020 | }; | |
1021 | ||
1022 | /* | |
1023 | * Push/release the pause for all linked streams. | |
1024 | */ | |
877211f5 | 1025 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1026 | { |
1027 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1028 | } | |
1029 | ||
1030 | #ifdef CONFIG_PM | |
1031 | /* suspend */ | |
1032 | ||
877211f5 | 1033 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1034 | { |
877211f5 | 1035 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1036 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1037 | return -EBUSY; | |
1038 | runtime->trigger_master = substream; | |
1039 | return 0; | |
1040 | } | |
1041 | ||
877211f5 | 1042 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1043 | { |
877211f5 | 1044 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1045 | if (runtime->trigger_master != substream) |
1046 | return 0; | |
1047 | if (! snd_pcm_running(substream)) | |
1048 | return 0; | |
1049 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1050 | return 0; /* suspend unconditionally */ | |
1051 | } | |
1052 | ||
877211f5 | 1053 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1054 | { |
877211f5 | 1055 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1056 | snd_pcm_trigger_tstamp(substream); |
1057 | if (substream->timer) | |
877211f5 TI |
1058 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1059 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1060 | runtime->status->suspended_state = runtime->status->state; |
1061 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1da177e4 LT |
1062 | wake_up(&runtime->sleep); |
1063 | } | |
1064 | ||
1065 | static struct action_ops snd_pcm_action_suspend = { | |
1066 | .pre_action = snd_pcm_pre_suspend, | |
1067 | .do_action = snd_pcm_do_suspend, | |
1068 | .post_action = snd_pcm_post_suspend | |
1069 | }; | |
1070 | ||
1071 | /** | |
1072 | * snd_pcm_suspend | |
df8db936 | 1073 | * @substream: the PCM substream |
1da177e4 LT |
1074 | * |
1075 | * Trigger SUSPEND to all linked streams. | |
1076 | * After this call, all streams are changed to SUSPENDED state. | |
1077 | */ | |
877211f5 | 1078 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1079 | { |
1080 | int err; | |
1081 | unsigned long flags; | |
1082 | ||
603bf524 TI |
1083 | if (! substream) |
1084 | return 0; | |
1085 | ||
1da177e4 LT |
1086 | snd_pcm_stream_lock_irqsave(substream, flags); |
1087 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1088 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1089 | return err; | |
1090 | } | |
1091 | ||
e88e8ae6 TI |
1092 | EXPORT_SYMBOL(snd_pcm_suspend); |
1093 | ||
1da177e4 LT |
1094 | /** |
1095 | * snd_pcm_suspend_all | |
df8db936 | 1096 | * @pcm: the PCM instance |
1da177e4 LT |
1097 | * |
1098 | * Trigger SUSPEND to all substreams in the given pcm. | |
1099 | * After this call, all streams are changed to SUSPENDED state. | |
1100 | */ | |
877211f5 | 1101 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1102 | { |
877211f5 | 1103 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1104 | int stream, err = 0; |
1105 | ||
603bf524 TI |
1106 | if (! pcm) |
1107 | return 0; | |
1108 | ||
1da177e4 | 1109 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1110 | for (substream = pcm->streams[stream].substream; |
1111 | substream; substream = substream->next) { | |
1da177e4 LT |
1112 | /* FIXME: the open/close code should lock this as well */ |
1113 | if (substream->runtime == NULL) | |
1114 | continue; | |
1115 | err = snd_pcm_suspend(substream); | |
1116 | if (err < 0 && err != -EBUSY) | |
1117 | return err; | |
1118 | } | |
1119 | } | |
1120 | return 0; | |
1121 | } | |
1122 | ||
e88e8ae6 TI |
1123 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1124 | ||
1da177e4 LT |
1125 | /* resume */ |
1126 | ||
877211f5 | 1127 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1128 | { |
877211f5 | 1129 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1130 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1131 | return -ENOSYS; | |
1132 | runtime->trigger_master = substream; | |
1133 | return 0; | |
1134 | } | |
1135 | ||
877211f5 | 1136 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1137 | { |
877211f5 | 1138 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1139 | if (runtime->trigger_master != substream) |
1140 | return 0; | |
1141 | /* DMA not running previously? */ | |
1142 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1143 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1144 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1145 | return 0; | |
1146 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1147 | } | |
1148 | ||
877211f5 | 1149 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1150 | { |
1151 | if (substream->runtime->trigger_master == substream && | |
1152 | snd_pcm_running(substream)) | |
1153 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1154 | } | |
1155 | ||
877211f5 | 1156 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1157 | { |
877211f5 | 1158 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1159 | snd_pcm_trigger_tstamp(substream); |
1160 | if (substream->timer) | |
877211f5 TI |
1161 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1162 | &runtime->trigger_tstamp); | |
1da177e4 | 1163 | runtime->status->state = runtime->status->suspended_state; |
1da177e4 LT |
1164 | } |
1165 | ||
1166 | static struct action_ops snd_pcm_action_resume = { | |
1167 | .pre_action = snd_pcm_pre_resume, | |
1168 | .do_action = snd_pcm_do_resume, | |
1169 | .undo_action = snd_pcm_undo_resume, | |
1170 | .post_action = snd_pcm_post_resume | |
1171 | }; | |
1172 | ||
877211f5 | 1173 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1174 | { |
877211f5 | 1175 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1176 | int res; |
1177 | ||
1178 | snd_power_lock(card); | |
cbac4b0c | 1179 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1180 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1181 | snd_power_unlock(card); | |
1182 | return res; | |
1183 | } | |
1184 | ||
1185 | #else | |
1186 | ||
877211f5 | 1187 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1188 | { |
1189 | return -ENOSYS; | |
1190 | } | |
1191 | ||
1192 | #endif /* CONFIG_PM */ | |
1193 | ||
1194 | /* | |
1195 | * xrun ioctl | |
1196 | * | |
1197 | * Change the RUNNING stream(s) to XRUN state. | |
1198 | */ | |
877211f5 | 1199 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1200 | { |
877211f5 TI |
1201 | struct snd_card *card = substream->pcm->card; |
1202 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1203 | int result; |
1204 | ||
1205 | snd_power_lock(card); | |
1206 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1207 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1208 | if (result < 0) |
1209 | goto _unlock; | |
1210 | } | |
1211 | ||
1212 | snd_pcm_stream_lock_irq(substream); | |
1213 | switch (runtime->status->state) { | |
1214 | case SNDRV_PCM_STATE_XRUN: | |
1215 | result = 0; /* already there */ | |
1216 | break; | |
1217 | case SNDRV_PCM_STATE_RUNNING: | |
1218 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1219 | break; | |
1220 | default: | |
1221 | result = -EBADFD; | |
1222 | } | |
1223 | snd_pcm_stream_unlock_irq(substream); | |
1224 | _unlock: | |
1225 | snd_power_unlock(card); | |
1226 | return result; | |
1227 | } | |
1228 | ||
1229 | /* | |
1230 | * reset ioctl | |
1231 | */ | |
877211f5 | 1232 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1233 | { |
877211f5 | 1234 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1235 | switch (runtime->status->state) { |
1236 | case SNDRV_PCM_STATE_RUNNING: | |
1237 | case SNDRV_PCM_STATE_PREPARED: | |
1238 | case SNDRV_PCM_STATE_PAUSED: | |
1239 | case SNDRV_PCM_STATE_SUSPENDED: | |
1240 | return 0; | |
1241 | default: | |
1242 | return -EBADFD; | |
1243 | } | |
1244 | } | |
1245 | ||
877211f5 | 1246 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1247 | { |
877211f5 | 1248 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1249 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1250 | if (err < 0) | |
1251 | return err; | |
1252 | // snd_assert(runtime->status->hw_ptr < runtime->buffer_size, ); | |
1253 | runtime->hw_ptr_base = 0; | |
877211f5 TI |
1254 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1255 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1256 | runtime->silence_start = runtime->status->hw_ptr; |
1257 | runtime->silence_filled = 0; | |
1258 | return 0; | |
1259 | } | |
1260 | ||
877211f5 | 1261 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1262 | { |
877211f5 | 1263 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1264 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1265 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1266 | runtime->silence_size > 0) | |
1267 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1268 | } | |
1269 | ||
1270 | static struct action_ops snd_pcm_action_reset = { | |
1271 | .pre_action = snd_pcm_pre_reset, | |
1272 | .do_action = snd_pcm_do_reset, | |
1273 | .post_action = snd_pcm_post_reset | |
1274 | }; | |
1275 | ||
877211f5 | 1276 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1277 | { |
1278 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1279 | } | |
1280 | ||
1281 | /* | |
1282 | * prepare ioctl | |
1283 | */ | |
0df63e44 TI |
1284 | /* we use the second argument for updating f_flags */ |
1285 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, | |
1286 | int f_flags) | |
1da177e4 | 1287 | { |
877211f5 | 1288 | struct snd_pcm_runtime *runtime = substream->runtime; |
de1b8b93 TI |
1289 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1290 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1291 | return -EBADFD; |
1292 | if (snd_pcm_running(substream)) | |
1293 | return -EBUSY; | |
0df63e44 | 1294 | substream->f_flags = f_flags; |
1da177e4 LT |
1295 | return 0; |
1296 | } | |
1297 | ||
877211f5 | 1298 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1299 | { |
1300 | int err; | |
1301 | err = substream->ops->prepare(substream); | |
1302 | if (err < 0) | |
1303 | return err; | |
1304 | return snd_pcm_do_reset(substream, 0); | |
1305 | } | |
1306 | ||
877211f5 | 1307 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1308 | { |
877211f5 | 1309 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1310 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1311 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1312 | } | |
1313 | ||
1314 | static struct action_ops snd_pcm_action_prepare = { | |
1315 | .pre_action = snd_pcm_pre_prepare, | |
1316 | .do_action = snd_pcm_do_prepare, | |
1317 | .post_action = snd_pcm_post_prepare | |
1318 | }; | |
1319 | ||
1320 | /** | |
1321 | * snd_pcm_prepare | |
df8db936 | 1322 | * @substream: the PCM substream instance |
0df63e44 | 1323 | * @file: file to refer f_flags |
df8db936 TI |
1324 | * |
1325 | * Prepare the PCM substream to be triggerable. | |
1da177e4 | 1326 | */ |
0df63e44 TI |
1327 | static int snd_pcm_prepare(struct snd_pcm_substream *substream, |
1328 | struct file *file) | |
1da177e4 LT |
1329 | { |
1330 | int res; | |
877211f5 | 1331 | struct snd_card *card = substream->pcm->card; |
0df63e44 TI |
1332 | int f_flags; |
1333 | ||
1334 | if (file) | |
1335 | f_flags = file->f_flags; | |
1336 | else | |
1337 | f_flags = substream->f_flags; | |
1da177e4 LT |
1338 | |
1339 | snd_power_lock(card); | |
cbac4b0c | 1340 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
0df63e44 TI |
1341 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, |
1342 | substream, f_flags); | |
1da177e4 LT |
1343 | snd_power_unlock(card); |
1344 | return res; | |
1345 | } | |
1346 | ||
1347 | /* | |
1348 | * drain ioctl | |
1349 | */ | |
1350 | ||
877211f5 | 1351 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1352 | { |
0df63e44 | 1353 | if (substream->f_flags & O_NONBLOCK) |
1da177e4 LT |
1354 | return -EAGAIN; |
1355 | substream->runtime->trigger_master = substream; | |
1356 | return 0; | |
1357 | } | |
1358 | ||
877211f5 | 1359 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1360 | { |
877211f5 | 1361 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1362 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1363 | switch (runtime->status->state) { | |
1364 | case SNDRV_PCM_STATE_PREPARED: | |
1365 | /* start playback stream if possible */ | |
1366 | if (! snd_pcm_playback_empty(substream)) { | |
1367 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1368 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1369 | } | |
1370 | break; | |
1371 | case SNDRV_PCM_STATE_RUNNING: | |
1372 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1373 | break; | |
1374 | default: | |
1375 | break; | |
1376 | } | |
1377 | } else { | |
1378 | /* stop running stream */ | |
1379 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
b05e5787 | 1380 | int new_state = snd_pcm_capture_avail(runtime) > 0 ? |
1da177e4 | 1381 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; |
b05e5787 MÅš |
1382 | snd_pcm_do_stop(substream, new_state); |
1383 | snd_pcm_post_stop(substream, new_state); | |
1da177e4 LT |
1384 | } |
1385 | } | |
1386 | return 0; | |
1387 | } | |
1388 | ||
877211f5 | 1389 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1390 | { |
1391 | } | |
1392 | ||
1393 | static struct action_ops snd_pcm_action_drain_init = { | |
1394 | .pre_action = snd_pcm_pre_drain_init, | |
1395 | .do_action = snd_pcm_do_drain_init, | |
1396 | .post_action = snd_pcm_post_drain_init | |
1397 | }; | |
1398 | ||
1399 | struct drain_rec { | |
877211f5 | 1400 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1401 | wait_queue_t wait; |
1402 | snd_pcm_uframes_t stop_threshold; | |
1403 | }; | |
1404 | ||
877211f5 | 1405 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1406 | |
1407 | /* | |
1408 | * Drain the stream(s). | |
1409 | * When the substream is linked, sync until the draining of all playback streams | |
1410 | * is finished. | |
1411 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1412 | * (capture only) state. | |
1413 | */ | |
877211f5 | 1414 | static int snd_pcm_drain(struct snd_pcm_substream *substream) |
1da177e4 | 1415 | { |
877211f5 TI |
1416 | struct snd_card *card; |
1417 | struct snd_pcm_runtime *runtime; | |
ef991b95 | 1418 | struct snd_pcm_substream *s; |
1da177e4 LT |
1419 | int result = 0; |
1420 | int i, num_drecs; | |
1421 | struct drain_rec *drec, drec_tmp, *d; | |
1422 | ||
1423 | snd_assert(substream != NULL, return -ENXIO); | |
1424 | card = substream->pcm->card; | |
1425 | runtime = substream->runtime; | |
1426 | ||
1427 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1428 | return -EBADFD; | |
1429 | ||
1da177e4 LT |
1430 | snd_power_lock(card); |
1431 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1432 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1433 | if (result < 0) { |
1434 | snd_power_unlock(card); | |
1435 | return result; | |
1436 | } | |
1da177e4 LT |
1437 | } |
1438 | ||
1439 | /* allocate temporary record for drain sync */ | |
21cb2a2e | 1440 | down_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1441 | if (snd_pcm_stream_linked(substream)) { |
1442 | drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL); | |
1443 | if (! drec) { | |
21cb2a2e TI |
1444 | up_read(&snd_pcm_link_rwsem); |
1445 | snd_power_unlock(card); | |
1446 | return -ENOMEM; | |
1da177e4 LT |
1447 | } |
1448 | } else | |
1449 | drec = &drec_tmp; | |
1450 | ||
21cb2a2e | 1451 | /* count only playback streams */ |
1da177e4 | 1452 | num_drecs = 0; |
ef991b95 | 1453 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 1454 | runtime = s->runtime; |
1da177e4 LT |
1455 | if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1456 | d = &drec[num_drecs++]; | |
1457 | d->substream = s; | |
1458 | init_waitqueue_entry(&d->wait, current); | |
1459 | add_wait_queue(&runtime->sleep, &d->wait); | |
1460 | /* stop_threshold fixup to avoid endless loop when | |
1461 | * stop_threshold > buffer_size | |
1462 | */ | |
1463 | d->stop_threshold = runtime->stop_threshold; | |
1464 | if (runtime->stop_threshold > runtime->buffer_size) | |
1465 | runtime->stop_threshold = runtime->buffer_size; | |
1466 | } | |
1467 | } | |
21cb2a2e | 1468 | up_read(&snd_pcm_link_rwsem); |
21cb2a2e TI |
1469 | |
1470 | snd_pcm_stream_lock_irq(substream); | |
1471 | /* resume pause */ | |
1a7fa543 | 1472 | if (substream->runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
21cb2a2e TI |
1473 | snd_pcm_pause(substream, 0); |
1474 | ||
1475 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1476 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
1477 | if (result < 0) { | |
1478 | snd_pcm_stream_unlock_irq(substream); | |
1479 | goto _error; | |
1480 | } | |
1da177e4 LT |
1481 | |
1482 | for (;;) { | |
1483 | long tout; | |
1484 | if (signal_pending(current)) { | |
1485 | result = -ERESTARTSYS; | |
1486 | break; | |
1487 | } | |
21cb2a2e TI |
1488 | /* all finished? */ |
1489 | for (i = 0; i < num_drecs; i++) { | |
1490 | runtime = drec[i].substream->runtime; | |
1491 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
1492 | break; | |
1493 | } | |
1494 | if (i == num_drecs) | |
1495 | break; /* yes, all drained */ | |
1496 | ||
1da177e4 LT |
1497 | set_current_state(TASK_INTERRUPTIBLE); |
1498 | snd_pcm_stream_unlock_irq(substream); | |
1499 | snd_power_unlock(card); | |
1500 | tout = schedule_timeout(10 * HZ); | |
1501 | snd_power_lock(card); | |
1502 | snd_pcm_stream_lock_irq(substream); | |
1503 | if (tout == 0) { | |
1504 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1505 | result = -ESTRPIPE; | |
1506 | else { | |
1507 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1508 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1509 | result = -EIO; | |
1510 | } | |
1511 | break; | |
1512 | } | |
1da177e4 | 1513 | } |
21cb2a2e TI |
1514 | |
1515 | snd_pcm_stream_unlock_irq(substream); | |
1516 | ||
1517 | _error: | |
1da177e4 LT |
1518 | for (i = 0; i < num_drecs; i++) { |
1519 | d = &drec[i]; | |
1520 | runtime = d->substream->runtime; | |
1521 | remove_wait_queue(&runtime->sleep, &d->wait); | |
1522 | runtime->stop_threshold = d->stop_threshold; | |
1523 | } | |
1524 | ||
1da177e4 LT |
1525 | if (drec != &drec_tmp) |
1526 | kfree(drec); | |
1da177e4 | 1527 | snd_power_unlock(card); |
1da177e4 LT |
1528 | |
1529 | return result; | |
1530 | } | |
1531 | ||
1532 | /* | |
1533 | * drop ioctl | |
1534 | * | |
1535 | * Immediately put all linked substreams into SETUP state. | |
1536 | */ | |
877211f5 | 1537 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1538 | { |
877211f5 TI |
1539 | struct snd_pcm_runtime *runtime; |
1540 | struct snd_card *card; | |
1da177e4 LT |
1541 | int result = 0; |
1542 | ||
1543 | snd_assert(substream != NULL, return -ENXIO); | |
1544 | runtime = substream->runtime; | |
1545 | card = substream->pcm->card; | |
1546 | ||
de1b8b93 TI |
1547 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1548 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1549 | return -EBADFD; |
1550 | ||
1551 | snd_power_lock(card); | |
1552 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1553 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1554 | if (result < 0) |
1555 | goto _unlock; | |
1556 | } | |
1557 | ||
1558 | snd_pcm_stream_lock_irq(substream); | |
1559 | /* resume pause */ | |
1560 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1561 | snd_pcm_pause(substream, 0); | |
1562 | ||
1563 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1564 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1565 | snd_pcm_stream_unlock_irq(substream); | |
1566 | _unlock: | |
1567 | snd_power_unlock(card); | |
1568 | return result; | |
1569 | } | |
1570 | ||
1571 | ||
1572 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1573 | static struct file *snd_pcm_file_fd(int fd) |
1574 | { | |
1575 | struct file *file; | |
1576 | struct inode *inode; | |
f87135f5 CL |
1577 | unsigned int minor; |
1578 | ||
1da177e4 LT |
1579 | file = fget(fd); |
1580 | if (!file) | |
1581 | return NULL; | |
7bc56323 | 1582 | inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
1583 | if (!S_ISCHR(inode->i_mode) || |
1584 | imajor(inode) != snd_major) { | |
1585 | fput(file); | |
1586 | return NULL; | |
1587 | } | |
1588 | minor = iminor(inode); | |
f87135f5 CL |
1589 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1590 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1591 | fput(file); |
1592 | return NULL; | |
1593 | } | |
1594 | return file; | |
1595 | } | |
1596 | ||
1597 | /* | |
1598 | * PCM link handling | |
1599 | */ | |
877211f5 | 1600 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1601 | { |
1602 | int res = 0; | |
1603 | struct file *file; | |
877211f5 TI |
1604 | struct snd_pcm_file *pcm_file; |
1605 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1606 | |
1607 | file = snd_pcm_file_fd(fd); | |
1608 | if (!file) | |
1609 | return -EBADFD; | |
1610 | pcm_file = file->private_data; | |
1611 | substream1 = pcm_file->substream; | |
1612 | down_write(&snd_pcm_link_rwsem); | |
1613 | write_lock_irq(&snd_pcm_link_rwlock); | |
1614 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1615 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1616 | res = -EBADFD; | |
1617 | goto _end; | |
1618 | } | |
1619 | if (snd_pcm_stream_linked(substream1)) { | |
1620 | res = -EALREADY; | |
1621 | goto _end; | |
1622 | } | |
1623 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1624 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1625 | if (substream->group == NULL) { |
1626 | res = -ENOMEM; | |
1627 | goto _end; | |
1628 | } | |
1629 | spin_lock_init(&substream->group->lock); | |
1630 | INIT_LIST_HEAD(&substream->group->substreams); | |
1631 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1632 | substream->group->count = 1; | |
1633 | } | |
1634 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1635 | substream->group->count++; | |
1636 | substream1->group = substream->group; | |
1637 | _end: | |
1638 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1639 | up_write(&snd_pcm_link_rwsem); | |
1640 | fput(file); | |
1641 | return res; | |
1642 | } | |
1643 | ||
877211f5 | 1644 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1645 | { |
1646 | substream->group = &substream->self_group; | |
1647 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1648 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1649 | } | |
1650 | ||
877211f5 | 1651 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 | 1652 | { |
ef991b95 | 1653 | struct snd_pcm_substream *s; |
1da177e4 LT |
1654 | int res = 0; |
1655 | ||
1656 | down_write(&snd_pcm_link_rwsem); | |
1657 | write_lock_irq(&snd_pcm_link_rwlock); | |
1658 | if (!snd_pcm_stream_linked(substream)) { | |
1659 | res = -EALREADY; | |
1660 | goto _end; | |
1661 | } | |
1662 | list_del(&substream->link_list); | |
1663 | substream->group->count--; | |
1664 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
ef991b95 TI |
1665 | snd_pcm_group_for_each_entry(s, substream) { |
1666 | relink_to_local(s); | |
1da177e4 LT |
1667 | break; |
1668 | } | |
1669 | kfree(substream->group); | |
1670 | } | |
1671 | relink_to_local(substream); | |
1672 | _end: | |
1673 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1674 | up_write(&snd_pcm_link_rwsem); | |
1675 | return res; | |
1676 | } | |
1677 | ||
1678 | /* | |
1679 | * hw configurator | |
1680 | */ | |
877211f5 TI |
1681 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1682 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1683 | { |
877211f5 | 1684 | struct snd_interval t; |
1da177e4 LT |
1685 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1686 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1687 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1688 | } | |
1689 | ||
877211f5 TI |
1690 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1691 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1692 | { |
877211f5 | 1693 | struct snd_interval t; |
1da177e4 LT |
1694 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1695 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1696 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1697 | } | |
1698 | ||
877211f5 TI |
1699 | static int snd_pcm_hw_rule_muldivk(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_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1704 | hw_param_interval_c(params, rule->deps[1]), | |
1705 | (unsigned long) rule->private, &t); | |
1706 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1707 | } | |
1708 | ||
877211f5 TI |
1709 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1710 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1711 | { |
877211f5 | 1712 | struct snd_interval t; |
1da177e4 LT |
1713 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1714 | (unsigned long) rule->private, | |
1715 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1716 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1717 | } | |
1718 | ||
877211f5 TI |
1719 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1720 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1721 | { |
1722 | unsigned int k; | |
877211f5 TI |
1723 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1724 | struct snd_mask m; | |
1725 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1726 | snd_mask_any(&m); |
1727 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1728 | int bits; | |
1729 | if (! snd_mask_test(mask, k)) | |
1730 | continue; | |
1731 | bits = snd_pcm_format_physical_width(k); | |
1732 | if (bits <= 0) | |
1733 | continue; /* ignore invalid formats */ | |
1734 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1735 | snd_mask_reset(&m, k); | |
1736 | } | |
1737 | return snd_mask_refine(mask, &m); | |
1738 | } | |
1739 | ||
877211f5 TI |
1740 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1741 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1742 | { |
877211f5 | 1743 | struct snd_interval t; |
1da177e4 LT |
1744 | unsigned int k; |
1745 | t.min = UINT_MAX; | |
1746 | t.max = 0; | |
1747 | t.openmin = 0; | |
1748 | t.openmax = 0; | |
1749 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1750 | int bits; | |
1751 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1752 | continue; | |
1753 | bits = snd_pcm_format_physical_width(k); | |
1754 | if (bits <= 0) | |
1755 | continue; /* ignore invalid formats */ | |
1756 | if (t.min > (unsigned)bits) | |
1757 | t.min = bits; | |
1758 | if (t.max < (unsigned)bits) | |
1759 | t.max = bits; | |
1760 | } | |
1761 | t.integer = 1; | |
1762 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1763 | } | |
1764 | ||
1765 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1766 | #error "Change this table" | |
1767 | #endif | |
1768 | ||
1769 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1770 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1771 | ||
7653d557 CL |
1772 | const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = { |
1773 | .count = ARRAY_SIZE(rates), | |
1774 | .list = rates, | |
1775 | }; | |
1776 | ||
877211f5 TI |
1777 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1778 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1779 | { |
877211f5 | 1780 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 | 1781 | return snd_interval_list(hw_param_interval(params, rule->var), |
7653d557 CL |
1782 | snd_pcm_known_rates.count, |
1783 | snd_pcm_known_rates.list, hw->rates); | |
1da177e4 LT |
1784 | } |
1785 | ||
877211f5 TI |
1786 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1787 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1788 | { |
877211f5 TI |
1789 | struct snd_interval t; |
1790 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1791 | t.min = 0; |
1792 | t.max = substream->buffer_bytes_max; | |
1793 | t.openmin = 0; | |
1794 | t.openmax = 0; | |
1795 | t.integer = 1; | |
1796 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1797 | } | |
1798 | ||
877211f5 | 1799 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1800 | { |
877211f5 TI |
1801 | struct snd_pcm_runtime *runtime = substream->runtime; |
1802 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1803 | int k, err; |
1804 | ||
1805 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1806 | snd_mask_any(constrs_mask(constrs, k)); | |
1807 | } | |
1808 | ||
1809 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1810 | snd_interval_any(constrs_interval(constrs, k)); | |
1811 | } | |
1812 | ||
1813 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1814 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1815 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1816 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1817 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1818 | ||
1819 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1820 | snd_pcm_hw_rule_format, NULL, | |
1821 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1822 | if (err < 0) | |
1823 | return err; | |
1824 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1825 | snd_pcm_hw_rule_sample_bits, NULL, | |
1826 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1827 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1828 | if (err < 0) | |
1829 | return err; | |
1830 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1831 | snd_pcm_hw_rule_div, NULL, | |
1832 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1833 | if (err < 0) | |
1834 | return err; | |
1835 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1836 | snd_pcm_hw_rule_mul, NULL, | |
1837 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1838 | if (err < 0) | |
1839 | return err; | |
1840 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1841 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1842 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1843 | if (err < 0) | |
1844 | return err; | |
1845 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1846 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1847 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1848 | if (err < 0) | |
1849 | return err; | |
1850 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1851 | snd_pcm_hw_rule_div, NULL, | |
1852 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1853 | if (err < 0) | |
1854 | return err; | |
1855 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1856 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1857 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1858 | if (err < 0) | |
1859 | return err; | |
1860 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1861 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1862 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1863 | if (err < 0) | |
1864 | return err; | |
1865 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1866 | snd_pcm_hw_rule_div, NULL, | |
1867 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1868 | if (err < 0) | |
1869 | return err; | |
1870 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1871 | snd_pcm_hw_rule_div, NULL, | |
1872 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1873 | if (err < 0) | |
1874 | return err; | |
1875 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1876 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1877 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1878 | if (err < 0) | |
1879 | return err; | |
1880 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1881 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1882 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1883 | if (err < 0) | |
1884 | return err; | |
1885 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1886 | snd_pcm_hw_rule_mul, NULL, | |
1887 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1888 | if (err < 0) | |
1889 | return err; | |
1890 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1891 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1892 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1893 | if (err < 0) | |
1894 | return err; | |
1895 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1896 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1897 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1898 | if (err < 0) | |
1899 | return err; | |
1900 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1901 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1902 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1903 | if (err < 0) | |
1904 | return err; | |
1905 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1906 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1907 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1908 | if (err < 0) | |
1909 | return err; | |
1910 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1911 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1912 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1913 | if (err < 0) | |
1914 | return err; | |
1915 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1916 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1917 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1918 | if (err < 0) | |
1919 | return err; | |
1920 | return 0; | |
1921 | } | |
1922 | ||
877211f5 | 1923 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1924 | { |
877211f5 TI |
1925 | struct snd_pcm_runtime *runtime = substream->runtime; |
1926 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1927 | int err; |
1928 | unsigned int mask = 0; | |
1929 | ||
1930 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1931 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1932 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1933 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1934 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1935 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1936 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1937 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1938 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1939 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1940 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1941 | } | |
1942 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
1943 | snd_assert(err >= 0, return -EINVAL); | |
1944 | ||
1945 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
1946 | snd_assert(err >= 0, return -EINVAL); | |
1947 | ||
1948 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
1949 | snd_assert(err >= 0, return -EINVAL); | |
1950 | ||
1951 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1952 | hw->channels_min, hw->channels_max); | |
1953 | snd_assert(err >= 0, return -EINVAL); | |
1954 | ||
1955 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1956 | hw->rate_min, hw->rate_max); | |
1957 | snd_assert(err >= 0, return -EINVAL); | |
1958 | ||
1959 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1960 | hw->period_bytes_min, hw->period_bytes_max); | |
1961 | snd_assert(err >= 0, return -EINVAL); | |
1962 | ||
1963 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1964 | hw->periods_min, hw->periods_max); | |
1965 | snd_assert(err >= 0, return -EINVAL); | |
1966 | ||
1967 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1968 | hw->period_bytes_min, hw->buffer_bytes_max); | |
1969 | snd_assert(err >= 0, return -EINVAL); | |
1970 | ||
1971 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1972 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1973 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1974 | if (err < 0) | |
1975 | return err; | |
1976 | ||
1977 | /* FIXME: remove */ | |
1978 | if (runtime->dma_bytes) { | |
1979 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
1980 | snd_assert(err >= 0, return -EINVAL); | |
1981 | } | |
1982 | ||
1983 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
1984 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1985 | snd_pcm_hw_rule_rate, hw, | |
1986 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1987 | if (err < 0) | |
1988 | return err; | |
1989 | } | |
1990 | ||
1991 | /* FIXME: this belong to lowlevel */ | |
1da177e4 LT |
1992 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); |
1993 | ||
1994 | return 0; | |
1995 | } | |
1996 | ||
3bf75f9b | 1997 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 1998 | { |
1da177e4 | 1999 | snd_pcm_unlink(substream); |
3bf75f9b TI |
2000 | } |
2001 | ||
2002 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
2003 | { | |
0df63e44 TI |
2004 | substream->ref_count--; |
2005 | if (substream->ref_count > 0) | |
2006 | return; | |
2007 | ||
3bf75f9b | 2008 | snd_pcm_drop(substream); |
3bf75f9b | 2009 | if (substream->hw_opened) { |
1da177e4 LT |
2010 | if (substream->ops->hw_free != NULL) |
2011 | substream->ops->hw_free(substream); | |
2012 | substream->ops->close(substream); | |
3bf75f9b | 2013 | substream->hw_opened = 0; |
1da177e4 | 2014 | } |
1576274d TI |
2015 | if (substream->pcm_release) { |
2016 | substream->pcm_release(substream); | |
2017 | substream->pcm_release = NULL; | |
2018 | } | |
3bf75f9b TI |
2019 | snd_pcm_detach_substream(substream); |
2020 | } | |
2021 | ||
e88e8ae6 TI |
2022 | EXPORT_SYMBOL(snd_pcm_release_substream); |
2023 | ||
3bf75f9b TI |
2024 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
2025 | struct file *file, | |
2026 | struct snd_pcm_substream **rsubstream) | |
2027 | { | |
2028 | struct snd_pcm_substream *substream; | |
2029 | int err; | |
2030 | ||
2031 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2032 | if (err < 0) | |
2033 | return err; | |
0df63e44 TI |
2034 | if (substream->ref_count > 1) { |
2035 | *rsubstream = substream; | |
2036 | return 0; | |
2037 | } | |
2038 | ||
3bf75f9b TI |
2039 | err = snd_pcm_hw_constraints_init(substream); |
2040 | if (err < 0) { | |
2041 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2042 | goto error; | |
2043 | } | |
2044 | ||
2045 | if ((err = substream->ops->open(substream)) < 0) | |
2046 | goto error; | |
2047 | ||
2048 | substream->hw_opened = 1; | |
2049 | ||
2050 | err = snd_pcm_hw_constraints_complete(substream); | |
2051 | if (err < 0) { | |
2052 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2053 | goto error; | |
2054 | } | |
2055 | ||
2056 | *rsubstream = substream; | |
1da177e4 | 2057 | return 0; |
3bf75f9b TI |
2058 | |
2059 | error: | |
2060 | snd_pcm_release_substream(substream); | |
2061 | return err; | |
1da177e4 LT |
2062 | } |
2063 | ||
e88e8ae6 TI |
2064 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2065 | ||
1da177e4 | 2066 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2067 | struct snd_pcm *pcm, |
1da177e4 | 2068 | int stream, |
877211f5 | 2069 | struct snd_pcm_file **rpcm_file) |
1da177e4 | 2070 | { |
877211f5 TI |
2071 | struct snd_pcm_file *pcm_file; |
2072 | struct snd_pcm_substream *substream; | |
2073 | struct snd_pcm_str *str; | |
3bf75f9b | 2074 | int err; |
1da177e4 LT |
2075 | |
2076 | snd_assert(rpcm_file != NULL, return -EINVAL); | |
2077 | *rpcm_file = NULL; | |
2078 | ||
3bf75f9b TI |
2079 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2080 | if (err < 0) | |
2081 | return err; | |
2082 | ||
548a648b TI |
2083 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
2084 | if (pcm_file == NULL) { | |
2085 | snd_pcm_release_substream(substream); | |
2086 | return -ENOMEM; | |
2087 | } | |
2088 | pcm_file->substream = substream; | |
2089 | if (substream->ref_count == 1) { | |
0df63e44 TI |
2090 | str = substream->pstr; |
2091 | substream->file = pcm_file; | |
2092 | substream->pcm_release = pcm_release_private; | |
1da177e4 | 2093 | } |
1da177e4 LT |
2094 | file->private_data = pcm_file; |
2095 | *rpcm_file = pcm_file; | |
2096 | return 0; | |
2097 | } | |
2098 | ||
f87135f5 CL |
2099 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2100 | { | |
2101 | struct snd_pcm *pcm; | |
2102 | ||
2103 | pcm = snd_lookup_minor_data(iminor(inode), | |
2104 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2105 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2106 | } | |
2107 | ||
2108 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2109 | { |
877211f5 | 2110 | struct snd_pcm *pcm; |
f87135f5 CL |
2111 | |
2112 | pcm = snd_lookup_minor_data(iminor(inode), | |
2113 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2114 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2115 | } | |
2116 | ||
2117 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2118 | { | |
2119 | int err; | |
877211f5 | 2120 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2121 | wait_queue_t wait; |
2122 | ||
1da177e4 LT |
2123 | if (pcm == NULL) { |
2124 | err = -ENODEV; | |
2125 | goto __error1; | |
2126 | } | |
2127 | err = snd_card_file_add(pcm->card, file); | |
2128 | if (err < 0) | |
2129 | goto __error1; | |
2130 | if (!try_module_get(pcm->card->module)) { | |
2131 | err = -EFAULT; | |
2132 | goto __error2; | |
2133 | } | |
2134 | init_waitqueue_entry(&wait, current); | |
2135 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2136 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2137 | while (1) { |
f87135f5 | 2138 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2139 | if (err >= 0) |
2140 | break; | |
2141 | if (err == -EAGAIN) { | |
2142 | if (file->f_flags & O_NONBLOCK) { | |
2143 | err = -EBUSY; | |
2144 | break; | |
2145 | } | |
2146 | } else | |
2147 | break; | |
2148 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2149 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2150 | schedule(); |
1a60d4c5 | 2151 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2152 | if (signal_pending(current)) { |
2153 | err = -ERESTARTSYS; | |
2154 | break; | |
2155 | } | |
2156 | } | |
2157 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2158 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2159 | if (err < 0) |
2160 | goto __error; | |
2161 | return err; | |
2162 | ||
2163 | __error: | |
2164 | module_put(pcm->card->module); | |
2165 | __error2: | |
2166 | snd_card_file_remove(pcm->card, file); | |
2167 | __error1: | |
2168 | return err; | |
2169 | } | |
2170 | ||
2171 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2172 | { | |
877211f5 TI |
2173 | struct snd_pcm *pcm; |
2174 | struct snd_pcm_substream *substream; | |
2175 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2176 | |
2177 | pcm_file = file->private_data; | |
2178 | substream = pcm_file->substream; | |
2179 | snd_assert(substream != NULL, return -ENXIO); | |
1da177e4 | 2180 | pcm = substream->pcm; |
1da177e4 | 2181 | fasync_helper(-1, file, 0, &substream->runtime->fasync); |
1a60d4c5 | 2182 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2183 | snd_pcm_release_substream(substream); |
548a648b | 2184 | kfree(pcm_file); |
1a60d4c5 | 2185 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2186 | wake_up(&pcm->open_wait); |
2187 | module_put(pcm->card->module); | |
2188 | snd_card_file_remove(pcm->card, file); | |
2189 | return 0; | |
2190 | } | |
2191 | ||
877211f5 TI |
2192 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2193 | snd_pcm_uframes_t frames) | |
1da177e4 | 2194 | { |
877211f5 | 2195 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2196 | snd_pcm_sframes_t appl_ptr; |
2197 | snd_pcm_sframes_t ret; | |
2198 | snd_pcm_sframes_t hw_avail; | |
2199 | ||
2200 | if (frames == 0) | |
2201 | return 0; | |
2202 | ||
2203 | snd_pcm_stream_lock_irq(substream); | |
2204 | switch (runtime->status->state) { | |
2205 | case SNDRV_PCM_STATE_PREPARED: | |
2206 | break; | |
2207 | case SNDRV_PCM_STATE_DRAINING: | |
2208 | case SNDRV_PCM_STATE_RUNNING: | |
2209 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2210 | break; | |
2211 | /* Fall through */ | |
2212 | case SNDRV_PCM_STATE_XRUN: | |
2213 | ret = -EPIPE; | |
2214 | goto __end; | |
2215 | default: | |
2216 | ret = -EBADFD; | |
2217 | goto __end; | |
2218 | } | |
2219 | ||
2220 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2221 | if (hw_avail <= 0) { | |
2222 | ret = 0; | |
2223 | goto __end; | |
2224 | } | |
2225 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2226 | frames = hw_avail; | |
1da177e4 LT |
2227 | appl_ptr = runtime->control->appl_ptr - frames; |
2228 | if (appl_ptr < 0) | |
2229 | appl_ptr += runtime->boundary; | |
2230 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2231 | ret = frames; |
2232 | __end: | |
2233 | snd_pcm_stream_unlock_irq(substream); | |
2234 | return ret; | |
2235 | } | |
2236 | ||
877211f5 TI |
2237 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2238 | snd_pcm_uframes_t frames) | |
1da177e4 | 2239 | { |
877211f5 | 2240 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2241 | snd_pcm_sframes_t appl_ptr; |
2242 | snd_pcm_sframes_t ret; | |
2243 | snd_pcm_sframes_t hw_avail; | |
2244 | ||
2245 | if (frames == 0) | |
2246 | return 0; | |
2247 | ||
2248 | snd_pcm_stream_lock_irq(substream); | |
2249 | switch (runtime->status->state) { | |
2250 | case SNDRV_PCM_STATE_PREPARED: | |
2251 | case SNDRV_PCM_STATE_DRAINING: | |
2252 | break; | |
2253 | case SNDRV_PCM_STATE_RUNNING: | |
2254 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2255 | break; | |
2256 | /* Fall through */ | |
2257 | case SNDRV_PCM_STATE_XRUN: | |
2258 | ret = -EPIPE; | |
2259 | goto __end; | |
2260 | default: | |
2261 | ret = -EBADFD; | |
2262 | goto __end; | |
2263 | } | |
2264 | ||
2265 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2266 | if (hw_avail <= 0) { | |
2267 | ret = 0; | |
2268 | goto __end; | |
2269 | } | |
2270 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2271 | frames = hw_avail; | |
1da177e4 LT |
2272 | appl_ptr = runtime->control->appl_ptr - frames; |
2273 | if (appl_ptr < 0) | |
2274 | appl_ptr += runtime->boundary; | |
2275 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2276 | ret = frames; |
2277 | __end: | |
2278 | snd_pcm_stream_unlock_irq(substream); | |
2279 | return ret; | |
2280 | } | |
2281 | ||
877211f5 TI |
2282 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2283 | snd_pcm_uframes_t frames) | |
1da177e4 | 2284 | { |
877211f5 | 2285 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2286 | snd_pcm_sframes_t appl_ptr; |
2287 | snd_pcm_sframes_t ret; | |
2288 | snd_pcm_sframes_t avail; | |
2289 | ||
2290 | if (frames == 0) | |
2291 | return 0; | |
2292 | ||
2293 | snd_pcm_stream_lock_irq(substream); | |
2294 | switch (runtime->status->state) { | |
2295 | case SNDRV_PCM_STATE_PREPARED: | |
2296 | case SNDRV_PCM_STATE_PAUSED: | |
2297 | break; | |
2298 | case SNDRV_PCM_STATE_DRAINING: | |
2299 | case SNDRV_PCM_STATE_RUNNING: | |
2300 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2301 | break; | |
2302 | /* Fall through */ | |
2303 | case SNDRV_PCM_STATE_XRUN: | |
2304 | ret = -EPIPE; | |
2305 | goto __end; | |
2306 | default: | |
2307 | ret = -EBADFD; | |
2308 | goto __end; | |
2309 | } | |
2310 | ||
2311 | avail = snd_pcm_playback_avail(runtime); | |
2312 | if (avail <= 0) { | |
2313 | ret = 0; | |
2314 | goto __end; | |
2315 | } | |
2316 | if (frames > (snd_pcm_uframes_t)avail) | |
2317 | frames = avail; | |
1da177e4 LT |
2318 | appl_ptr = runtime->control->appl_ptr + frames; |
2319 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2320 | appl_ptr -= runtime->boundary; | |
2321 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2322 | ret = frames; |
2323 | __end: | |
2324 | snd_pcm_stream_unlock_irq(substream); | |
2325 | return ret; | |
2326 | } | |
2327 | ||
877211f5 TI |
2328 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2329 | snd_pcm_uframes_t frames) | |
1da177e4 | 2330 | { |
877211f5 | 2331 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2332 | snd_pcm_sframes_t appl_ptr; |
2333 | snd_pcm_sframes_t ret; | |
2334 | snd_pcm_sframes_t avail; | |
2335 | ||
2336 | if (frames == 0) | |
2337 | return 0; | |
2338 | ||
2339 | snd_pcm_stream_lock_irq(substream); | |
2340 | switch (runtime->status->state) { | |
2341 | case SNDRV_PCM_STATE_PREPARED: | |
2342 | case SNDRV_PCM_STATE_DRAINING: | |
2343 | case SNDRV_PCM_STATE_PAUSED: | |
2344 | break; | |
2345 | case SNDRV_PCM_STATE_RUNNING: | |
2346 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2347 | break; | |
2348 | /* Fall through */ | |
2349 | case SNDRV_PCM_STATE_XRUN: | |
2350 | ret = -EPIPE; | |
2351 | goto __end; | |
2352 | default: | |
2353 | ret = -EBADFD; | |
2354 | goto __end; | |
2355 | } | |
2356 | ||
2357 | avail = snd_pcm_capture_avail(runtime); | |
2358 | if (avail <= 0) { | |
2359 | ret = 0; | |
2360 | goto __end; | |
2361 | } | |
2362 | if (frames > (snd_pcm_uframes_t)avail) | |
2363 | frames = avail; | |
1da177e4 LT |
2364 | appl_ptr = runtime->control->appl_ptr + frames; |
2365 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2366 | appl_ptr -= runtime->boundary; | |
2367 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2368 | ret = frames; |
2369 | __end: | |
2370 | snd_pcm_stream_unlock_irq(substream); | |
2371 | return ret; | |
2372 | } | |
2373 | ||
877211f5 | 2374 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2375 | { |
877211f5 | 2376 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2377 | int err; |
2378 | ||
2379 | snd_pcm_stream_lock_irq(substream); | |
2380 | switch (runtime->status->state) { | |
2381 | case SNDRV_PCM_STATE_DRAINING: | |
2382 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2383 | goto __badfd; | |
2384 | case SNDRV_PCM_STATE_RUNNING: | |
2385 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2386 | break; | |
2387 | /* Fall through */ | |
2388 | case SNDRV_PCM_STATE_PREPARED: | |
2389 | case SNDRV_PCM_STATE_SUSPENDED: | |
2390 | err = 0; | |
2391 | break; | |
2392 | case SNDRV_PCM_STATE_XRUN: | |
2393 | err = -EPIPE; | |
2394 | break; | |
2395 | default: | |
2396 | __badfd: | |
2397 | err = -EBADFD; | |
2398 | break; | |
2399 | } | |
2400 | snd_pcm_stream_unlock_irq(substream); | |
2401 | return err; | |
2402 | } | |
2403 | ||
877211f5 TI |
2404 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2405 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2406 | { |
877211f5 | 2407 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2408 | int err; |
2409 | snd_pcm_sframes_t n = 0; | |
2410 | ||
2411 | snd_pcm_stream_lock_irq(substream); | |
2412 | switch (runtime->status->state) { | |
2413 | case SNDRV_PCM_STATE_DRAINING: | |
2414 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2415 | goto __badfd; | |
2416 | case SNDRV_PCM_STATE_RUNNING: | |
2417 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2418 | break; | |
2419 | /* Fall through */ | |
2420 | case SNDRV_PCM_STATE_PREPARED: | |
2421 | case SNDRV_PCM_STATE_SUSPENDED: | |
2422 | err = 0; | |
2423 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2424 | n = snd_pcm_playback_hw_avail(runtime); | |
2425 | else | |
2426 | n = snd_pcm_capture_avail(runtime); | |
2427 | break; | |
2428 | case SNDRV_PCM_STATE_XRUN: | |
2429 | err = -EPIPE; | |
2430 | break; | |
2431 | default: | |
2432 | __badfd: | |
2433 | err = -EBADFD; | |
2434 | break; | |
2435 | } | |
2436 | snd_pcm_stream_unlock_irq(substream); | |
2437 | if (!err) | |
2438 | if (put_user(n, res)) | |
2439 | err = -EFAULT; | |
2440 | return err; | |
2441 | } | |
2442 | ||
877211f5 TI |
2443 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2444 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2445 | { |
877211f5 TI |
2446 | struct snd_pcm_runtime *runtime = substream->runtime; |
2447 | struct snd_pcm_sync_ptr sync_ptr; | |
2448 | volatile struct snd_pcm_mmap_status *status; | |
2449 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2450 | int err; |
2451 | ||
2452 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2453 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2454 | return -EFAULT; | |
877211f5 | 2455 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2456 | return -EFAULT; |
2457 | status = runtime->status; | |
2458 | control = runtime->control; | |
2459 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2460 | err = snd_pcm_hwsync(substream); | |
2461 | if (err < 0) | |
2462 | return err; | |
2463 | } | |
2464 | snd_pcm_stream_lock_irq(substream); | |
2465 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2466 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2467 | else | |
2468 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2469 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2470 | control->avail_min = sync_ptr.c.control.avail_min; | |
2471 | else | |
2472 | sync_ptr.c.control.avail_min = control->avail_min; | |
2473 | sync_ptr.s.status.state = status->state; | |
2474 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2475 | sync_ptr.s.status.tstamp = status->tstamp; | |
2476 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2477 | snd_pcm_stream_unlock_irq(substream); | |
2478 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2479 | return -EFAULT; | |
2480 | return 0; | |
2481 | } | |
b751eef1 JK |
2482 | |
2483 | static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg) | |
2484 | { | |
2485 | struct snd_pcm_runtime *runtime = substream->runtime; | |
2486 | int arg; | |
2487 | ||
2488 | if (get_user(arg, _arg)) | |
2489 | return -EFAULT; | |
2490 | if (arg < 0 || arg > SNDRV_PCM_TSTAMP_TYPE_LAST) | |
2491 | return -EINVAL; | |
2492 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY; | |
2493 | if (arg == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC) | |
2494 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC; | |
2495 | return 0; | |
2496 | } | |
1da177e4 | 2497 | |
0df63e44 TI |
2498 | static int snd_pcm_common_ioctl1(struct file *file, |
2499 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2500 | unsigned int cmd, void __user *arg) |
2501 | { | |
2502 | snd_assert(substream != NULL, return -ENXIO); | |
2503 | ||
2504 | switch (cmd) { | |
2505 | case SNDRV_PCM_IOCTL_PVERSION: | |
2506 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2507 | case SNDRV_PCM_IOCTL_INFO: | |
2508 | return snd_pcm_info_user(substream, arg); | |
28e9e473 JK |
2509 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
2510 | return 0; | |
b751eef1 JK |
2511 | case SNDRV_PCM_IOCTL_TTSTAMP: |
2512 | return snd_pcm_tstamp(substream, arg); | |
1da177e4 LT |
2513 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2514 | return snd_pcm_hw_refine_user(substream, arg); | |
2515 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2516 | return snd_pcm_hw_params_user(substream, arg); | |
2517 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2518 | return snd_pcm_hw_free(substream); | |
2519 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2520 | return snd_pcm_sw_params_user(substream, arg); | |
2521 | case SNDRV_PCM_IOCTL_STATUS: | |
2522 | return snd_pcm_status_user(substream, arg); | |
2523 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2524 | return snd_pcm_channel_info_user(substream, arg); | |
2525 | case SNDRV_PCM_IOCTL_PREPARE: | |
0df63e44 | 2526 | return snd_pcm_prepare(substream, file); |
1da177e4 LT |
2527 | case SNDRV_PCM_IOCTL_RESET: |
2528 | return snd_pcm_reset(substream); | |
2529 | case SNDRV_PCM_IOCTL_START: | |
2530 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2531 | case SNDRV_PCM_IOCTL_LINK: | |
2532 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2533 | case SNDRV_PCM_IOCTL_UNLINK: | |
2534 | return snd_pcm_unlink(substream); | |
2535 | case SNDRV_PCM_IOCTL_RESUME: | |
2536 | return snd_pcm_resume(substream); | |
2537 | case SNDRV_PCM_IOCTL_XRUN: | |
2538 | return snd_pcm_xrun(substream); | |
2539 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2540 | return snd_pcm_hwsync(substream); | |
2541 | case SNDRV_PCM_IOCTL_DELAY: | |
2542 | return snd_pcm_delay(substream, arg); | |
2543 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2544 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2545 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2546 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2547 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2548 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2549 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2550 | #endif |
1da177e4 LT |
2551 | case SNDRV_PCM_IOCTL_DRAIN: |
2552 | return snd_pcm_drain(substream); | |
2553 | case SNDRV_PCM_IOCTL_DROP: | |
2554 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2555 | case SNDRV_PCM_IOCTL_PAUSE: |
2556 | { | |
2557 | int res; | |
2558 | snd_pcm_stream_lock_irq(substream); | |
2559 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2560 | snd_pcm_stream_unlock_irq(substream); | |
2561 | return res; | |
2562 | } | |
1da177e4 LT |
2563 | } |
2564 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2565 | return -ENOTTY; | |
2566 | } | |
2567 | ||
0df63e44 TI |
2568 | static int snd_pcm_playback_ioctl1(struct file *file, |
2569 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2570 | unsigned int cmd, void __user *arg) |
2571 | { | |
2572 | snd_assert(substream != NULL, return -ENXIO); | |
2573 | snd_assert(substream->stream == SNDRV_PCM_STREAM_PLAYBACK, return -EINVAL); | |
2574 | switch (cmd) { | |
2575 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2576 | { | |
877211f5 TI |
2577 | struct snd_xferi xferi; |
2578 | struct snd_xferi __user *_xferi = arg; | |
2579 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2580 | snd_pcm_sframes_t result; |
2581 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2582 | return -EBADFD; | |
2583 | if (put_user(0, &_xferi->result)) | |
2584 | return -EFAULT; | |
2585 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2586 | return -EFAULT; | |
2587 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2588 | __put_user(result, &_xferi->result); | |
2589 | return result < 0 ? result : 0; | |
2590 | } | |
2591 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2592 | { | |
877211f5 TI |
2593 | struct snd_xfern xfern; |
2594 | struct snd_xfern __user *_xfern = arg; | |
2595 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2596 | void __user **bufs; |
2597 | snd_pcm_sframes_t result; | |
2598 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2599 | return -EBADFD; | |
2600 | if (runtime->channels > 128) | |
2601 | return -EINVAL; | |
2602 | if (put_user(0, &_xfern->result)) | |
2603 | return -EFAULT; | |
2604 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2605 | return -EFAULT; | |
2606 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2607 | if (bufs == NULL) | |
2608 | return -ENOMEM; | |
2609 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2610 | kfree(bufs); | |
2611 | return -EFAULT; | |
2612 | } | |
2613 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); | |
2614 | kfree(bufs); | |
2615 | __put_user(result, &_xfern->result); | |
2616 | return result < 0 ? result : 0; | |
2617 | } | |
2618 | case SNDRV_PCM_IOCTL_REWIND: | |
2619 | { | |
2620 | snd_pcm_uframes_t frames; | |
2621 | snd_pcm_uframes_t __user *_frames = arg; | |
2622 | snd_pcm_sframes_t result; | |
2623 | if (get_user(frames, _frames)) | |
2624 | return -EFAULT; | |
2625 | if (put_user(0, _frames)) | |
2626 | return -EFAULT; | |
2627 | result = snd_pcm_playback_rewind(substream, frames); | |
2628 | __put_user(result, _frames); | |
2629 | return result < 0 ? result : 0; | |
2630 | } | |
2631 | case SNDRV_PCM_IOCTL_FORWARD: | |
2632 | { | |
2633 | snd_pcm_uframes_t frames; | |
2634 | snd_pcm_uframes_t __user *_frames = arg; | |
2635 | snd_pcm_sframes_t result; | |
2636 | if (get_user(frames, _frames)) | |
2637 | return -EFAULT; | |
2638 | if (put_user(0, _frames)) | |
2639 | return -EFAULT; | |
2640 | result = snd_pcm_playback_forward(substream, frames); | |
2641 | __put_user(result, _frames); | |
2642 | return result < 0 ? result : 0; | |
2643 | } | |
1da177e4 | 2644 | } |
0df63e44 | 2645 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2646 | } |
2647 | ||
0df63e44 TI |
2648 | static int snd_pcm_capture_ioctl1(struct file *file, |
2649 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2650 | unsigned int cmd, void __user *arg) |
2651 | { | |
2652 | snd_assert(substream != NULL, return -ENXIO); | |
2653 | snd_assert(substream->stream == SNDRV_PCM_STREAM_CAPTURE, return -EINVAL); | |
2654 | switch (cmd) { | |
2655 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2656 | { | |
877211f5 TI |
2657 | struct snd_xferi xferi; |
2658 | struct snd_xferi __user *_xferi = arg; | |
2659 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2660 | snd_pcm_sframes_t result; |
2661 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2662 | return -EBADFD; | |
2663 | if (put_user(0, &_xferi->result)) | |
2664 | return -EFAULT; | |
2665 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2666 | return -EFAULT; | |
2667 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2668 | __put_user(result, &_xferi->result); | |
2669 | return result < 0 ? result : 0; | |
2670 | } | |
2671 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2672 | { | |
877211f5 TI |
2673 | struct snd_xfern xfern; |
2674 | struct snd_xfern __user *_xfern = arg; | |
2675 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2676 | void *bufs; |
2677 | snd_pcm_sframes_t result; | |
2678 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2679 | return -EBADFD; | |
2680 | if (runtime->channels > 128) | |
2681 | return -EINVAL; | |
2682 | if (put_user(0, &_xfern->result)) | |
2683 | return -EFAULT; | |
2684 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2685 | return -EFAULT; | |
2686 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2687 | if (bufs == NULL) | |
2688 | return -ENOMEM; | |
2689 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2690 | kfree(bufs); | |
2691 | return -EFAULT; | |
2692 | } | |
2693 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); | |
2694 | kfree(bufs); | |
2695 | __put_user(result, &_xfern->result); | |
2696 | return result < 0 ? result : 0; | |
2697 | } | |
2698 | case SNDRV_PCM_IOCTL_REWIND: | |
2699 | { | |
2700 | snd_pcm_uframes_t frames; | |
2701 | snd_pcm_uframes_t __user *_frames = arg; | |
2702 | snd_pcm_sframes_t result; | |
2703 | if (get_user(frames, _frames)) | |
2704 | return -EFAULT; | |
2705 | if (put_user(0, _frames)) | |
2706 | return -EFAULT; | |
2707 | result = snd_pcm_capture_rewind(substream, frames); | |
2708 | __put_user(result, _frames); | |
2709 | return result < 0 ? result : 0; | |
2710 | } | |
2711 | case SNDRV_PCM_IOCTL_FORWARD: | |
2712 | { | |
2713 | snd_pcm_uframes_t frames; | |
2714 | snd_pcm_uframes_t __user *_frames = arg; | |
2715 | snd_pcm_sframes_t result; | |
2716 | if (get_user(frames, _frames)) | |
2717 | return -EFAULT; | |
2718 | if (put_user(0, _frames)) | |
2719 | return -EFAULT; | |
2720 | result = snd_pcm_capture_forward(substream, frames); | |
2721 | __put_user(result, _frames); | |
2722 | return result < 0 ? result : 0; | |
2723 | } | |
2724 | } | |
0df63e44 | 2725 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2726 | } |
2727 | ||
877211f5 TI |
2728 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2729 | unsigned long arg) | |
1da177e4 | 2730 | { |
877211f5 | 2731 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2732 | |
2733 | pcm_file = file->private_data; | |
2734 | ||
2735 | if (((cmd >> 8) & 0xff) != 'A') | |
2736 | return -ENOTTY; | |
2737 | ||
0df63e44 TI |
2738 | return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd, |
2739 | (void __user *)arg); | |
1da177e4 LT |
2740 | } |
2741 | ||
877211f5 TI |
2742 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2743 | unsigned long arg) | |
1da177e4 | 2744 | { |
877211f5 | 2745 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2746 | |
2747 | pcm_file = file->private_data; | |
2748 | ||
2749 | if (((cmd >> 8) & 0xff) != 'A') | |
2750 | return -ENOTTY; | |
2751 | ||
0df63e44 TI |
2752 | return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd, |
2753 | (void __user *)arg); | |
1da177e4 LT |
2754 | } |
2755 | ||
bf1bbb5a TI |
2756 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2757 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2758 | { |
2759 | mm_segment_t fs; | |
2760 | int result; | |
2761 | ||
2762 | fs = snd_enter_user(); | |
1da177e4 LT |
2763 | switch (substream->stream) { |
2764 | case SNDRV_PCM_STREAM_PLAYBACK: | |
0df63e44 TI |
2765 | result = snd_pcm_playback_ioctl1(NULL, substream, cmd, |
2766 | (void __user *)arg); | |
bf1bbb5a | 2767 | break; |
1da177e4 | 2768 | case SNDRV_PCM_STREAM_CAPTURE: |
0df63e44 TI |
2769 | result = snd_pcm_capture_ioctl1(NULL, substream, cmd, |
2770 | (void __user *)arg); | |
bf1bbb5a | 2771 | break; |
1da177e4 | 2772 | default: |
bf1bbb5a TI |
2773 | result = -EINVAL; |
2774 | break; | |
1da177e4 | 2775 | } |
bf1bbb5a TI |
2776 | snd_leave_user(fs); |
2777 | return result; | |
1da177e4 LT |
2778 | } |
2779 | ||
e88e8ae6 TI |
2780 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2781 | ||
877211f5 TI |
2782 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2783 | loff_t * offset) | |
1da177e4 | 2784 | { |
877211f5 TI |
2785 | struct snd_pcm_file *pcm_file; |
2786 | struct snd_pcm_substream *substream; | |
2787 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2788 | snd_pcm_sframes_t result; |
2789 | ||
2790 | pcm_file = file->private_data; | |
2791 | substream = pcm_file->substream; | |
2792 | snd_assert(substream != NULL, return -ENXIO); | |
2793 | runtime = substream->runtime; | |
2794 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2795 | return -EBADFD; | |
2796 | if (!frame_aligned(runtime, count)) | |
2797 | return -EINVAL; | |
2798 | count = bytes_to_frames(runtime, count); | |
2799 | result = snd_pcm_lib_read(substream, buf, count); | |
2800 | if (result > 0) | |
2801 | result = frames_to_bytes(runtime, result); | |
2802 | return result; | |
2803 | } | |
2804 | ||
877211f5 TI |
2805 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2806 | size_t count, loff_t * offset) | |
1da177e4 | 2807 | { |
877211f5 TI |
2808 | struct snd_pcm_file *pcm_file; |
2809 | struct snd_pcm_substream *substream; | |
2810 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2811 | snd_pcm_sframes_t result; |
2812 | ||
2813 | pcm_file = file->private_data; | |
2814 | substream = pcm_file->substream; | |
2815 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2816 | runtime = substream->runtime; | |
2817 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2818 | result = -EBADFD; | |
2819 | goto end; | |
2820 | } | |
2821 | if (!frame_aligned(runtime, count)) { | |
2822 | result = -EINVAL; | |
2823 | goto end; | |
2824 | } | |
2825 | count = bytes_to_frames(runtime, count); | |
2826 | result = snd_pcm_lib_write(substream, buf, count); | |
2827 | if (result > 0) | |
2828 | result = frames_to_bytes(runtime, result); | |
2829 | end: | |
2830 | return result; | |
2831 | } | |
2832 | ||
ee0b3e67 BP |
2833 | static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov, |
2834 | unsigned long nr_segs, loff_t pos) | |
1da177e4 LT |
2835 | |
2836 | { | |
877211f5 TI |
2837 | struct snd_pcm_file *pcm_file; |
2838 | struct snd_pcm_substream *substream; | |
2839 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2840 | snd_pcm_sframes_t result; |
2841 | unsigned long i; | |
2842 | void __user **bufs; | |
2843 | snd_pcm_uframes_t frames; | |
2844 | ||
ee0b3e67 | 2845 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 LT |
2846 | substream = pcm_file->substream; |
2847 | snd_assert(substream != NULL, return -ENXIO); | |
2848 | runtime = substream->runtime; | |
2849 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2850 | return -EBADFD; | |
ee0b3e67 | 2851 | if (nr_segs > 1024 || nr_segs != runtime->channels) |
1da177e4 | 2852 | return -EINVAL; |
ee0b3e67 | 2853 | if (!frame_aligned(runtime, iov->iov_len)) |
1da177e4 | 2854 | return -EINVAL; |
ee0b3e67 BP |
2855 | frames = bytes_to_samples(runtime, iov->iov_len); |
2856 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2857 | if (bufs == NULL) |
2858 | return -ENOMEM; | |
ee0b3e67 BP |
2859 | for (i = 0; i < nr_segs; ++i) |
2860 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2861 | result = snd_pcm_lib_readv(substream, bufs, frames); |
2862 | if (result > 0) | |
2863 | result = frames_to_bytes(runtime, result); | |
2864 | kfree(bufs); | |
2865 | return result; | |
2866 | } | |
2867 | ||
ee0b3e67 BP |
2868 | static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov, |
2869 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 2870 | { |
877211f5 TI |
2871 | struct snd_pcm_file *pcm_file; |
2872 | struct snd_pcm_substream *substream; | |
2873 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2874 | snd_pcm_sframes_t result; |
2875 | unsigned long i; | |
2876 | void __user **bufs; | |
2877 | snd_pcm_uframes_t frames; | |
2878 | ||
ee0b3e67 | 2879 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 LT |
2880 | substream = pcm_file->substream; |
2881 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2882 | runtime = substream->runtime; | |
2883 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2884 | result = -EBADFD; | |
2885 | goto end; | |
2886 | } | |
ee0b3e67 BP |
2887 | if (nr_segs > 128 || nr_segs != runtime->channels || |
2888 | !frame_aligned(runtime, iov->iov_len)) { | |
1da177e4 LT |
2889 | result = -EINVAL; |
2890 | goto end; | |
2891 | } | |
ee0b3e67 BP |
2892 | frames = bytes_to_samples(runtime, iov->iov_len); |
2893 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2894 | if (bufs == NULL) |
2895 | return -ENOMEM; | |
ee0b3e67 BP |
2896 | for (i = 0; i < nr_segs; ++i) |
2897 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2898 | result = snd_pcm_lib_writev(substream, bufs, frames); |
2899 | if (result > 0) | |
2900 | result = frames_to_bytes(runtime, result); | |
2901 | kfree(bufs); | |
2902 | end: | |
2903 | return result; | |
2904 | } | |
2905 | ||
2906 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2907 | { | |
877211f5 TI |
2908 | struct snd_pcm_file *pcm_file; |
2909 | struct snd_pcm_substream *substream; | |
2910 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2911 | unsigned int mask; |
2912 | snd_pcm_uframes_t avail; | |
2913 | ||
2914 | pcm_file = file->private_data; | |
2915 | ||
2916 | substream = pcm_file->substream; | |
2917 | snd_assert(substream != NULL, return -ENXIO); | |
2918 | runtime = substream->runtime; | |
2919 | ||
2920 | poll_wait(file, &runtime->sleep, wait); | |
2921 | ||
2922 | snd_pcm_stream_lock_irq(substream); | |
2923 | avail = snd_pcm_playback_avail(runtime); | |
2924 | switch (runtime->status->state) { | |
2925 | case SNDRV_PCM_STATE_RUNNING: | |
2926 | case SNDRV_PCM_STATE_PREPARED: | |
2927 | case SNDRV_PCM_STATE_PAUSED: | |
2928 | if (avail >= runtime->control->avail_min) { | |
2929 | mask = POLLOUT | POLLWRNORM; | |
2930 | break; | |
2931 | } | |
2932 | /* Fall through */ | |
2933 | case SNDRV_PCM_STATE_DRAINING: | |
2934 | mask = 0; | |
2935 | break; | |
2936 | default: | |
2937 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2938 | break; | |
2939 | } | |
2940 | snd_pcm_stream_unlock_irq(substream); | |
2941 | return mask; | |
2942 | } | |
2943 | ||
2944 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2945 | { | |
877211f5 TI |
2946 | struct snd_pcm_file *pcm_file; |
2947 | struct snd_pcm_substream *substream; | |
2948 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2949 | unsigned int mask; |
2950 | snd_pcm_uframes_t avail; | |
2951 | ||
2952 | pcm_file = file->private_data; | |
2953 | ||
2954 | substream = pcm_file->substream; | |
2955 | snd_assert(substream != NULL, return -ENXIO); | |
2956 | runtime = substream->runtime; | |
2957 | ||
2958 | poll_wait(file, &runtime->sleep, wait); | |
2959 | ||
2960 | snd_pcm_stream_lock_irq(substream); | |
2961 | avail = snd_pcm_capture_avail(runtime); | |
2962 | switch (runtime->status->state) { | |
2963 | case SNDRV_PCM_STATE_RUNNING: | |
2964 | case SNDRV_PCM_STATE_PREPARED: | |
2965 | case SNDRV_PCM_STATE_PAUSED: | |
2966 | if (avail >= runtime->control->avail_min) { | |
2967 | mask = POLLIN | POLLRDNORM; | |
2968 | break; | |
2969 | } | |
2970 | mask = 0; | |
2971 | break; | |
2972 | case SNDRV_PCM_STATE_DRAINING: | |
2973 | if (avail > 0) { | |
2974 | mask = POLLIN | POLLRDNORM; | |
2975 | break; | |
2976 | } | |
2977 | /* Fall through */ | |
2978 | default: | |
2979 | mask = POLLIN | POLLRDNORM | POLLERR; | |
2980 | break; | |
2981 | } | |
2982 | snd_pcm_stream_unlock_irq(substream); | |
2983 | return mask; | |
2984 | } | |
2985 | ||
2986 | /* | |
2987 | * mmap support | |
2988 | */ | |
2989 | ||
2990 | /* | |
2991 | * Only on coherent architectures, we can mmap the status and the control records | |
2992 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
2993 | */ | |
2994 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
2995 | /* | |
2996 | * mmap status record | |
2997 | */ | |
3ad5afcd NP |
2998 | static int snd_pcm_mmap_status_fault(struct vm_area_struct *area, |
2999 | struct vm_fault *vmf) | |
1da177e4 | 3000 | { |
877211f5 TI |
3001 | struct snd_pcm_substream *substream = area->vm_private_data; |
3002 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3003 | |
3004 | if (substream == NULL) | |
3ad5afcd | 3005 | return VM_FAULT_SIGBUS; |
1da177e4 | 3006 | runtime = substream->runtime; |
3ad5afcd NP |
3007 | vmf->page = virt_to_page(runtime->status); |
3008 | get_page(vmf->page); | |
3009 | return 0; | |
1da177e4 LT |
3010 | } |
3011 | ||
3012 | static struct vm_operations_struct snd_pcm_vm_ops_status = | |
3013 | { | |
3ad5afcd | 3014 | .fault = snd_pcm_mmap_status_fault, |
1da177e4 LT |
3015 | }; |
3016 | ||
877211f5 | 3017 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3018 | struct vm_area_struct *area) |
3019 | { | |
877211f5 | 3020 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3021 | long size; |
3022 | if (!(area->vm_flags & VM_READ)) | |
3023 | return -EINVAL; | |
3024 | runtime = substream->runtime; | |
3025 | snd_assert(runtime != NULL, return -EAGAIN); | |
3026 | size = area->vm_end - area->vm_start; | |
877211f5 | 3027 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3028 | return -EINVAL; |
3029 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3030 | area->vm_private_data = substream; | |
3031 | area->vm_flags |= VM_RESERVED; | |
3032 | return 0; | |
3033 | } | |
3034 | ||
3035 | /* | |
3036 | * mmap control record | |
3037 | */ | |
3ad5afcd NP |
3038 | static int snd_pcm_mmap_control_fault(struct vm_area_struct *area, |
3039 | struct vm_fault *vmf) | |
1da177e4 | 3040 | { |
877211f5 TI |
3041 | struct snd_pcm_substream *substream = area->vm_private_data; |
3042 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3043 | |
3044 | if (substream == NULL) | |
3ad5afcd | 3045 | return VM_FAULT_SIGBUS; |
1da177e4 | 3046 | runtime = substream->runtime; |
3ad5afcd NP |
3047 | vmf->page = virt_to_page(runtime->control); |
3048 | get_page(vmf->page); | |
3049 | return 0; | |
1da177e4 LT |
3050 | } |
3051 | ||
3052 | static struct vm_operations_struct snd_pcm_vm_ops_control = | |
3053 | { | |
3ad5afcd | 3054 | .fault = snd_pcm_mmap_control_fault, |
1da177e4 LT |
3055 | }; |
3056 | ||
877211f5 | 3057 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3058 | struct vm_area_struct *area) |
3059 | { | |
877211f5 | 3060 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3061 | long size; |
3062 | if (!(area->vm_flags & VM_READ)) | |
3063 | return -EINVAL; | |
3064 | runtime = substream->runtime; | |
3065 | snd_assert(runtime != NULL, return -EAGAIN); | |
3066 | size = area->vm_end - area->vm_start; | |
877211f5 | 3067 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3068 | return -EINVAL; |
3069 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3070 | area->vm_private_data = substream; | |
3071 | area->vm_flags |= VM_RESERVED; | |
3072 | return 0; | |
3073 | } | |
3074 | #else /* ! coherent mmap */ | |
3075 | /* | |
3076 | * don't support mmap for status and control records. | |
3077 | */ | |
877211f5 | 3078 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3079 | struct vm_area_struct *area) |
3080 | { | |
3081 | return -ENXIO; | |
3082 | } | |
877211f5 | 3083 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3084 | struct vm_area_struct *area) |
3085 | { | |
3086 | return -ENXIO; | |
3087 | } | |
3088 | #endif /* coherent mmap */ | |
3089 | ||
3090 | /* | |
3ad5afcd | 3091 | * fault callback for mmapping a RAM page |
1da177e4 | 3092 | */ |
3ad5afcd NP |
3093 | static int snd_pcm_mmap_data_fault(struct vm_area_struct *area, |
3094 | struct vm_fault *vmf) | |
1da177e4 | 3095 | { |
877211f5 TI |
3096 | struct snd_pcm_substream *substream = area->vm_private_data; |
3097 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3098 | unsigned long offset; |
3099 | struct page * page; | |
3100 | void *vaddr; | |
3101 | size_t dma_bytes; | |
3102 | ||
3103 | if (substream == NULL) | |
3ad5afcd | 3104 | return VM_FAULT_SIGBUS; |
1da177e4 | 3105 | runtime = substream->runtime; |
3ad5afcd | 3106 | offset = vmf->pgoff << PAGE_SHIFT; |
1da177e4 LT |
3107 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
3108 | if (offset > dma_bytes - PAGE_SIZE) | |
3ad5afcd | 3109 | return VM_FAULT_SIGBUS; |
1da177e4 LT |
3110 | if (substream->ops->page) { |
3111 | page = substream->ops->page(substream, offset); | |
3ad5afcd NP |
3112 | if (!page) |
3113 | return VM_FAULT_SIGBUS; | |
1da177e4 LT |
3114 | } else { |
3115 | vaddr = runtime->dma_area + offset; | |
3116 | page = virt_to_page(vaddr); | |
3117 | } | |
b5810039 | 3118 | get_page(page); |
3ad5afcd NP |
3119 | vmf->page = page; |
3120 | return 0; | |
1da177e4 LT |
3121 | } |
3122 | ||
3123 | static struct vm_operations_struct snd_pcm_vm_ops_data = | |
3124 | { | |
3125 | .open = snd_pcm_mmap_data_open, | |
3126 | .close = snd_pcm_mmap_data_close, | |
3ad5afcd | 3127 | .fault = snd_pcm_mmap_data_fault, |
1da177e4 LT |
3128 | }; |
3129 | ||
3130 | /* | |
3131 | * mmap the DMA buffer on RAM | |
3132 | */ | |
877211f5 TI |
3133 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3134 | struct vm_area_struct *area) | |
1da177e4 LT |
3135 | { |
3136 | area->vm_ops = &snd_pcm_vm_ops_data; | |
3137 | area->vm_private_data = substream; | |
3138 | area->vm_flags |= VM_RESERVED; | |
9c323fcb | 3139 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3140 | return 0; |
3141 | } | |
3142 | ||
3143 | /* | |
3144 | * mmap the DMA buffer on I/O memory area | |
3145 | */ | |
3146 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
3147 | static struct vm_operations_struct snd_pcm_vm_ops_data_mmio = | |
3148 | { | |
3149 | .open = snd_pcm_mmap_data_open, | |
3150 | .close = snd_pcm_mmap_data_close, | |
3151 | }; | |
3152 | ||
877211f5 TI |
3153 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3154 | struct vm_area_struct *area) | |
1da177e4 LT |
3155 | { |
3156 | long size; | |
3157 | unsigned long offset; | |
3158 | ||
3159 | #ifdef pgprot_noncached | |
3160 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3161 | #endif | |
3162 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; | |
3163 | area->vm_private_data = substream; | |
3164 | area->vm_flags |= VM_IO; | |
3165 | size = area->vm_end - area->vm_start; | |
3166 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3167 | if (io_remap_pfn_range(area, area->vm_start, | |
3168 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3169 | size, area->vm_page_prot)) | |
3170 | return -EAGAIN; | |
9c323fcb | 3171 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3172 | return 0; |
3173 | } | |
e88e8ae6 TI |
3174 | |
3175 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3176 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3177 | ||
3178 | /* | |
3179 | * mmap DMA buffer | |
3180 | */ | |
877211f5 | 3181 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3182 | struct vm_area_struct *area) |
3183 | { | |
877211f5 | 3184 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3185 | long size; |
3186 | unsigned long offset; | |
3187 | size_t dma_bytes; | |
3188 | ||
3189 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3190 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3191 | return -EINVAL; | |
3192 | } else { | |
3193 | if (!(area->vm_flags & VM_READ)) | |
3194 | return -EINVAL; | |
3195 | } | |
3196 | runtime = substream->runtime; | |
3197 | snd_assert(runtime != NULL, return -EAGAIN); | |
3198 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
3199 | return -EBADFD; | |
3200 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3201 | return -ENXIO; | |
3202 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3203 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3204 | return -EINVAL; | |
3205 | size = area->vm_end - area->vm_start; | |
3206 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3207 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3208 | if ((size_t)size > dma_bytes) | |
3209 | return -EINVAL; | |
3210 | if (offset > dma_bytes - size) | |
3211 | return -EINVAL; | |
3212 | ||
3213 | if (substream->ops->mmap) | |
3214 | return substream->ops->mmap(substream, area); | |
3215 | else | |
3216 | return snd_pcm_default_mmap(substream, area); | |
3217 | } | |
3218 | ||
e88e8ae6 TI |
3219 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3220 | ||
1da177e4 LT |
3221 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3222 | { | |
877211f5 TI |
3223 | struct snd_pcm_file * pcm_file; |
3224 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3225 | unsigned long offset; |
3226 | ||
3227 | pcm_file = file->private_data; | |
3228 | substream = pcm_file->substream; | |
3229 | snd_assert(substream != NULL, return -ENXIO); | |
3230 | ||
3231 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3232 | switch (offset) { | |
3233 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
548a648b | 3234 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3235 | return -ENXIO; |
3236 | return snd_pcm_mmap_status(substream, file, area); | |
3237 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
548a648b | 3238 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3239 | return -ENXIO; |
3240 | return snd_pcm_mmap_control(substream, file, area); | |
3241 | default: | |
3242 | return snd_pcm_mmap_data(substream, file, area); | |
3243 | } | |
3244 | return 0; | |
3245 | } | |
3246 | ||
3247 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3248 | { | |
877211f5 TI |
3249 | struct snd_pcm_file * pcm_file; |
3250 | struct snd_pcm_substream *substream; | |
3251 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3252 | int err; |
3253 | ||
3254 | pcm_file = file->private_data; | |
3255 | substream = pcm_file->substream; | |
3256 | snd_assert(substream != NULL, return -ENXIO); | |
3257 | runtime = substream->runtime; | |
3258 | ||
3259 | err = fasync_helper(fd, file, on, &runtime->fasync); | |
3260 | if (err < 0) | |
3261 | return err; | |
3262 | return 0; | |
3263 | } | |
3264 | ||
3265 | /* | |
3266 | * ioctl32 compat | |
3267 | */ | |
3268 | #ifdef CONFIG_COMPAT | |
3269 | #include "pcm_compat.c" | |
3270 | #else | |
3271 | #define snd_pcm_ioctl_compat NULL | |
3272 | #endif | |
3273 | ||
3274 | /* | |
3275 | * To be removed helpers to keep binary compatibility | |
3276 | */ | |
3277 | ||
59d48582 | 3278 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3279 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3280 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3281 | ||
877211f5 TI |
3282 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3283 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3284 | { |
3285 | unsigned int i; | |
3286 | ||
3287 | memset(params, 0, sizeof(*params)); | |
3288 | params->flags = oparams->flags; | |
3289 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3290 | params->masks[i].bits[0] = oparams->masks[i]; | |
3291 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3292 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3293 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3294 | params->info = oparams->info; | |
3295 | params->msbits = oparams->msbits; | |
3296 | params->rate_num = oparams->rate_num; | |
3297 | params->rate_den = oparams->rate_den; | |
3298 | params->fifo_size = oparams->fifo_size; | |
3299 | } | |
3300 | ||
877211f5 TI |
3301 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3302 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3303 | { |
3304 | unsigned int i; | |
3305 | ||
3306 | memset(oparams, 0, sizeof(*oparams)); | |
3307 | oparams->flags = params->flags; | |
3308 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3309 | oparams->masks[i] = params->masks[i].bits[0]; | |
3310 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3311 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3312 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3313 | oparams->info = params->info; | |
3314 | oparams->msbits = params->msbits; | |
3315 | oparams->rate_num = params->rate_num; | |
3316 | oparams->rate_den = params->rate_den; | |
3317 | oparams->fifo_size = params->fifo_size; | |
3318 | } | |
3319 | ||
877211f5 TI |
3320 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3321 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3322 | { |
877211f5 TI |
3323 | struct snd_pcm_hw_params *params; |
3324 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3325 | int err; |
3326 | ||
3327 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3328 | if (!params) { | |
3329 | err = -ENOMEM; | |
3330 | goto out; | |
3331 | } | |
3332 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3333 | if (!oparams) { | |
3334 | err = -ENOMEM; | |
3335 | goto out; | |
3336 | } | |
3337 | ||
3338 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3339 | err = -EFAULT; | |
3340 | goto out; | |
3341 | } | |
3342 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3343 | err = snd_pcm_hw_refine(substream, params); | |
3344 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3345 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3346 | if (!err) | |
3347 | err = -EFAULT; | |
3348 | } | |
3349 | out: | |
3350 | kfree(params); | |
3351 | kfree(oparams); | |
3352 | return err; | |
3353 | } | |
3354 | ||
877211f5 TI |
3355 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3356 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3357 | { |
877211f5 TI |
3358 | struct snd_pcm_hw_params *params; |
3359 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3360 | int err; |
3361 | ||
3362 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3363 | if (!params) { | |
3364 | err = -ENOMEM; | |
3365 | goto out; | |
3366 | } | |
3367 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3368 | if (!oparams) { | |
3369 | err = -ENOMEM; | |
3370 | goto out; | |
3371 | } | |
3372 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3373 | err = -EFAULT; | |
3374 | goto out; | |
3375 | } | |
3376 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3377 | err = snd_pcm_hw_params(substream, params); | |
3378 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3379 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3380 | if (!err) | |
3381 | err = -EFAULT; | |
3382 | } | |
3383 | out: | |
3384 | kfree(params); | |
3385 | kfree(oparams); | |
3386 | return err; | |
3387 | } | |
59d48582 | 3388 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 LT |
3389 | |
3390 | /* | |
3391 | * Register section | |
3392 | */ | |
3393 | ||
9c2e08c5 | 3394 | const struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3395 | { |
2af677fc CL |
3396 | .owner = THIS_MODULE, |
3397 | .write = snd_pcm_write, | |
ee0b3e67 | 3398 | .aio_write = snd_pcm_aio_write, |
f87135f5 | 3399 | .open = snd_pcm_playback_open, |
2af677fc CL |
3400 | .release = snd_pcm_release, |
3401 | .poll = snd_pcm_playback_poll, | |
3402 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3403 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3404 | .mmap = snd_pcm_mmap, | |
3405 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3406 | }, |
3407 | { | |
2af677fc CL |
3408 | .owner = THIS_MODULE, |
3409 | .read = snd_pcm_read, | |
ee0b3e67 | 3410 | .aio_read = snd_pcm_aio_read, |
f87135f5 | 3411 | .open = snd_pcm_capture_open, |
2af677fc CL |
3412 | .release = snd_pcm_release, |
3413 | .poll = snd_pcm_capture_poll, | |
3414 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3415 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3416 | .mmap = snd_pcm_mmap, | |
3417 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3418 | } |
3419 | }; |