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Commit | Line | Data |
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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> | |
2db9f0a3 | 25 | #include <linux/smp_lock.h> |
1da177e4 | 26 | #include <linux/time.h> |
f011e2e2 | 27 | #include <linux/pm_qos_params.h> |
1da177e4 LT |
28 | #include <linux/uio.h> |
29 | #include <sound/core.h> | |
30 | #include <sound/control.h> | |
31 | #include <sound/info.h> | |
32 | #include <sound/pcm.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/timer.h> | |
35 | #include <sound/minors.h> | |
36 | #include <asm/io.h> | |
37 | ||
38 | /* | |
39 | * Compatibility | |
40 | */ | |
41 | ||
877211f5 | 42 | struct snd_pcm_hw_params_old { |
1da177e4 LT |
43 | unsigned int flags; |
44 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - | |
45 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; | |
877211f5 | 46 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
1da177e4 LT |
47 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS + 1]; |
48 | unsigned int rmask; | |
49 | unsigned int cmask; | |
50 | unsigned int info; | |
51 | unsigned int msbits; | |
52 | unsigned int rate_num; | |
53 | unsigned int rate_den; | |
877211f5 | 54 | snd_pcm_uframes_t fifo_size; |
1da177e4 LT |
55 | unsigned char reserved[64]; |
56 | }; | |
57 | ||
59d48582 | 58 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
877211f5 TI |
59 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
60 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) | |
1da177e4 | 61 | |
877211f5 TI |
62 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
63 | struct snd_pcm_hw_params_old __user * _oparams); | |
64 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, | |
65 | struct snd_pcm_hw_params_old __user * _oparams); | |
59d48582 | 66 | #endif |
f87135f5 | 67 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream); |
1da177e4 LT |
68 | |
69 | /* | |
70 | * | |
71 | */ | |
72 | ||
73 | DEFINE_RWLOCK(snd_pcm_link_rwlock); | |
e88e8ae6 | 74 | EXPORT_SYMBOL(snd_pcm_link_rwlock); |
1da177e4 | 75 | |
e88e8ae6 | 76 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
1da177e4 LT |
77 | |
78 | static inline mm_segment_t snd_enter_user(void) | |
79 | { | |
80 | mm_segment_t fs = get_fs(); | |
81 | set_fs(get_ds()); | |
82 | return fs; | |
83 | } | |
84 | ||
85 | static inline void snd_leave_user(mm_segment_t fs) | |
86 | { | |
87 | set_fs(fs); | |
88 | } | |
89 | ||
90 | ||
91 | ||
877211f5 | 92 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
1da177e4 | 93 | { |
877211f5 TI |
94 | struct snd_pcm_runtime *runtime; |
95 | struct snd_pcm *pcm = substream->pcm; | |
96 | struct snd_pcm_str *pstr = substream->pstr; | |
1da177e4 | 97 | |
1da177e4 LT |
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 | |
006de267 | 189 | printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]); |
1da177e4 LT |
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 | |
006de267 | 209 | printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]); |
1da177e4 LT |
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 | |
006de267 | 254 | printk(KERN_DEBUG "Rule %d [%p]: ", k, r->func); |
1da177e4 LT |
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) | |
8bea869c JK |
315 | params->info = hw->info & ~SNDRV_PCM_INFO_FIFO_IN_FRAMES; |
316 | if (!params->fifo_size) { | |
317 | if (snd_mask_min(¶ms->masks[SNDRV_PCM_HW_PARAM_FORMAT]) == | |
318 | snd_mask_max(¶ms->masks[SNDRV_PCM_HW_PARAM_FORMAT]) && | |
319 | snd_mask_min(¶ms->masks[SNDRV_PCM_HW_PARAM_CHANNELS]) == | |
320 | snd_mask_max(¶ms->masks[SNDRV_PCM_HW_PARAM_CHANNELS])) { | |
321 | changed = substream->ops->ioctl(substream, | |
322 | SNDRV_PCM_IOCTL1_FIFO_SIZE, params); | |
8bd9bca3 | 323 | if (changed < 0) |
8bea869c JK |
324 | return changed; |
325 | } | |
326 | } | |
1da177e4 LT |
327 | params->rmask = 0; |
328 | return 0; | |
329 | } | |
330 | ||
e88e8ae6 TI |
331 | EXPORT_SYMBOL(snd_pcm_hw_refine); |
332 | ||
877211f5 TI |
333 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
334 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 335 | { |
877211f5 | 336 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
337 | int err; |
338 | ||
ef44a1ec LZ |
339 | params = memdup_user(_params, sizeof(*params)); |
340 | if (IS_ERR(params)) | |
341 | return PTR_ERR(params); | |
342 | ||
1da177e4 LT |
343 | err = snd_pcm_hw_refine(substream, params); |
344 | if (copy_to_user(_params, params, sizeof(*params))) { | |
345 | if (!err) | |
346 | err = -EFAULT; | |
347 | } | |
ef44a1ec | 348 | |
1da177e4 LT |
349 | kfree(params); |
350 | return err; | |
351 | } | |
352 | ||
9442e691 TI |
353 | static int period_to_usecs(struct snd_pcm_runtime *runtime) |
354 | { | |
355 | int usecs; | |
356 | ||
357 | if (! runtime->rate) | |
358 | return -1; /* invalid */ | |
359 | ||
360 | /* take 75% of period time as the deadline */ | |
361 | usecs = (750000 / runtime->rate) * runtime->period_size; | |
362 | usecs += ((750000 % runtime->rate) * runtime->period_size) / | |
363 | runtime->rate; | |
364 | ||
365 | return usecs; | |
366 | } | |
367 | ||
877211f5 TI |
368 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
369 | struct snd_pcm_hw_params *params) | |
1da177e4 | 370 | { |
877211f5 | 371 | struct snd_pcm_runtime *runtime; |
9442e691 | 372 | int err, usecs; |
1da177e4 LT |
373 | unsigned int bits; |
374 | snd_pcm_uframes_t frames; | |
375 | ||
7eaa943c TI |
376 | if (PCM_RUNTIME_CHECK(substream)) |
377 | return -ENXIO; | |
1da177e4 | 378 | runtime = substream->runtime; |
1da177e4 LT |
379 | snd_pcm_stream_lock_irq(substream); |
380 | switch (runtime->status->state) { | |
381 | case SNDRV_PCM_STATE_OPEN: | |
382 | case SNDRV_PCM_STATE_SETUP: | |
383 | case SNDRV_PCM_STATE_PREPARED: | |
384 | break; | |
385 | default: | |
386 | snd_pcm_stream_unlock_irq(substream); | |
387 | return -EBADFD; | |
388 | } | |
389 | snd_pcm_stream_unlock_irq(substream); | |
390 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
391 | if (!substream->oss.oss) | |
392 | #endif | |
9c323fcb | 393 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
394 | return -EBADFD; |
395 | ||
396 | params->rmask = ~0U; | |
397 | err = snd_pcm_hw_refine(substream, params); | |
398 | if (err < 0) | |
399 | goto _error; | |
400 | ||
401 | err = snd_pcm_hw_params_choose(substream, params); | |
402 | if (err < 0) | |
403 | goto _error; | |
404 | ||
405 | if (substream->ops->hw_params != NULL) { | |
406 | err = substream->ops->hw_params(substream, params); | |
407 | if (err < 0) | |
408 | goto _error; | |
409 | } | |
410 | ||
411 | runtime->access = params_access(params); | |
412 | runtime->format = params_format(params); | |
413 | runtime->subformat = params_subformat(params); | |
414 | runtime->channels = params_channels(params); | |
415 | runtime->rate = params_rate(params); | |
416 | runtime->period_size = params_period_size(params); | |
417 | runtime->periods = params_periods(params); | |
418 | runtime->buffer_size = params_buffer_size(params); | |
1da177e4 LT |
419 | runtime->info = params->info; |
420 | runtime->rate_num = params->rate_num; | |
421 | runtime->rate_den = params->rate_den; | |
422 | ||
423 | bits = snd_pcm_format_physical_width(runtime->format); | |
424 | runtime->sample_bits = bits; | |
425 | bits *= runtime->channels; | |
426 | runtime->frame_bits = bits; | |
427 | frames = 1; | |
428 | while (bits % 8 != 0) { | |
429 | bits *= 2; | |
430 | frames *= 2; | |
431 | } | |
432 | runtime->byte_align = bits / 8; | |
433 | runtime->min_align = frames; | |
434 | ||
435 | /* Default sw params */ | |
436 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
437 | runtime->period_step = 1; | |
1da177e4 | 438 | runtime->control->avail_min = runtime->period_size; |
1da177e4 LT |
439 | runtime->start_threshold = 1; |
440 | runtime->stop_threshold = runtime->buffer_size; | |
441 | runtime->silence_threshold = 0; | |
442 | runtime->silence_size = 0; | |
443 | runtime->boundary = runtime->buffer_size; | |
444 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
445 | runtime->boundary *= 2; | |
446 | ||
447 | snd_pcm_timer_resolution_change(substream); | |
448 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
9442e691 | 449 | |
f011e2e2 MG |
450 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, |
451 | substream->latency_id); | |
9442e691 | 452 | if ((usecs = period_to_usecs(runtime)) >= 0) |
f011e2e2 MG |
453 | pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, |
454 | substream->latency_id, usecs); | |
1da177e4 LT |
455 | return 0; |
456 | _error: | |
457 | /* hardware might be unuseable from this time, | |
458 | so we force application to retry to set | |
459 | the correct hardware parameter settings */ | |
460 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
461 | if (substream->ops->hw_free != NULL) | |
462 | substream->ops->hw_free(substream); | |
463 | return err; | |
464 | } | |
465 | ||
877211f5 TI |
466 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
467 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 468 | { |
877211f5 | 469 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
470 | int err; |
471 | ||
ef44a1ec LZ |
472 | params = memdup_user(_params, sizeof(*params)); |
473 | if (IS_ERR(params)) | |
474 | return PTR_ERR(params); | |
475 | ||
1da177e4 LT |
476 | err = snd_pcm_hw_params(substream, params); |
477 | if (copy_to_user(_params, params, sizeof(*params))) { | |
478 | if (!err) | |
479 | err = -EFAULT; | |
480 | } | |
ef44a1ec | 481 | |
1da177e4 LT |
482 | kfree(params); |
483 | return err; | |
484 | } | |
485 | ||
877211f5 | 486 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 487 | { |
877211f5 | 488 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
489 | int result = 0; |
490 | ||
7eaa943c TI |
491 | if (PCM_RUNTIME_CHECK(substream)) |
492 | return -ENXIO; | |
1da177e4 | 493 | runtime = substream->runtime; |
1da177e4 LT |
494 | snd_pcm_stream_lock_irq(substream); |
495 | switch (runtime->status->state) { | |
496 | case SNDRV_PCM_STATE_SETUP: | |
497 | case SNDRV_PCM_STATE_PREPARED: | |
498 | break; | |
499 | default: | |
500 | snd_pcm_stream_unlock_irq(substream); | |
501 | return -EBADFD; | |
502 | } | |
503 | snd_pcm_stream_unlock_irq(substream); | |
9c323fcb | 504 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
505 | return -EBADFD; |
506 | if (substream->ops->hw_free) | |
507 | result = substream->ops->hw_free(substream); | |
508 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
f011e2e2 MG |
509 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, |
510 | substream->latency_id); | |
1da177e4 LT |
511 | return result; |
512 | } | |
513 | ||
877211f5 TI |
514 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
515 | struct snd_pcm_sw_params *params) | |
1da177e4 | 516 | { |
877211f5 | 517 | struct snd_pcm_runtime *runtime; |
1da177e4 | 518 | |
7eaa943c TI |
519 | if (PCM_RUNTIME_CHECK(substream)) |
520 | return -ENXIO; | |
1da177e4 | 521 | runtime = substream->runtime; |
1da177e4 LT |
522 | snd_pcm_stream_lock_irq(substream); |
523 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
524 | snd_pcm_stream_unlock_irq(substream); | |
525 | return -EBADFD; | |
526 | } | |
527 | snd_pcm_stream_unlock_irq(substream); | |
528 | ||
529 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
530 | return -EINVAL; | |
531 | if (params->avail_min == 0) | |
532 | return -EINVAL; | |
1da177e4 LT |
533 | if (params->silence_size >= runtime->boundary) { |
534 | if (params->silence_threshold != 0) | |
535 | return -EINVAL; | |
536 | } else { | |
537 | if (params->silence_size > params->silence_threshold) | |
538 | return -EINVAL; | |
539 | if (params->silence_threshold > runtime->buffer_size) | |
540 | return -EINVAL; | |
541 | } | |
542 | snd_pcm_stream_lock_irq(substream); | |
543 | runtime->tstamp_mode = params->tstamp_mode; | |
1da177e4 LT |
544 | runtime->period_step = params->period_step; |
545 | runtime->control->avail_min = params->avail_min; | |
546 | runtime->start_threshold = params->start_threshold; | |
547 | runtime->stop_threshold = params->stop_threshold; | |
548 | runtime->silence_threshold = params->silence_threshold; | |
549 | runtime->silence_size = params->silence_size; | |
1da177e4 LT |
550 | params->boundary = runtime->boundary; |
551 | if (snd_pcm_running(substream)) { | |
1da177e4 LT |
552 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
553 | runtime->silence_size > 0) | |
554 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
555 | wake_up(&runtime->sleep); | |
556 | } | |
557 | snd_pcm_stream_unlock_irq(substream); | |
558 | return 0; | |
559 | } | |
560 | ||
877211f5 TI |
561 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
562 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 563 | { |
877211f5 | 564 | struct snd_pcm_sw_params params; |
1da177e4 LT |
565 | int err; |
566 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
567 | return -EFAULT; | |
568 | err = snd_pcm_sw_params(substream, ¶ms); | |
569 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
570 | return -EFAULT; | |
571 | return err; | |
572 | } | |
573 | ||
877211f5 TI |
574 | int snd_pcm_status(struct snd_pcm_substream *substream, |
575 | struct snd_pcm_status *status) | |
1da177e4 | 576 | { |
877211f5 | 577 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
578 | |
579 | snd_pcm_stream_lock_irq(substream); | |
580 | status->state = runtime->status->state; | |
581 | status->suspended_state = runtime->status->suspended_state; | |
582 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
583 | goto _end; | |
584 | status->trigger_tstamp = runtime->trigger_tstamp; | |
8c121586 | 585 | if (snd_pcm_running(substream)) { |
1da177e4 | 586 | snd_pcm_update_hw_ptr(substream); |
8c121586 JK |
587 | if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) { |
588 | status->tstamp = runtime->status->tstamp; | |
589 | goto _tstamp_end; | |
590 | } | |
591 | } | |
a713b583 | 592 | snd_pcm_gettime(runtime, &status->tstamp); |
8c121586 | 593 | _tstamp_end: |
1da177e4 LT |
594 | status->appl_ptr = runtime->control->appl_ptr; |
595 | status->hw_ptr = runtime->status->hw_ptr; | |
596 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
597 | status->avail = snd_pcm_playback_avail(runtime); | |
598 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
4bbe1ddf | 599 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
1da177e4 | 600 | status->delay = runtime->buffer_size - status->avail; |
4bbe1ddf TI |
601 | status->delay += runtime->delay; |
602 | } else | |
1da177e4 LT |
603 | status->delay = 0; |
604 | } else { | |
605 | status->avail = snd_pcm_capture_avail(runtime); | |
606 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
4bbe1ddf | 607 | status->delay = status->avail + runtime->delay; |
1da177e4 LT |
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 | 623 | struct snd_pcm_status status; |
1da177e4 LT |
624 | int res; |
625 | ||
1da177e4 LT |
626 | memset(&status, 0, sizeof(status)); |
627 | res = snd_pcm_status(substream, &status); | |
628 | if (res < 0) | |
629 | return res; | |
630 | if (copy_to_user(_status, &status, sizeof(status))) | |
631 | return -EFAULT; | |
632 | return 0; | |
633 | } | |
634 | ||
877211f5 TI |
635 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
636 | struct snd_pcm_channel_info * info) | |
1da177e4 | 637 | { |
877211f5 | 638 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
639 | unsigned int channel; |
640 | ||
1da177e4 LT |
641 | channel = info->channel; |
642 | runtime = substream->runtime; | |
643 | snd_pcm_stream_lock_irq(substream); | |
644 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
645 | snd_pcm_stream_unlock_irq(substream); | |
646 | return -EBADFD; | |
647 | } | |
648 | snd_pcm_stream_unlock_irq(substream); | |
649 | if (channel >= runtime->channels) | |
650 | return -EINVAL; | |
651 | memset(info, 0, sizeof(*info)); | |
652 | info->channel = channel; | |
653 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
654 | } | |
655 | ||
877211f5 TI |
656 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
657 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 658 | { |
877211f5 | 659 | struct snd_pcm_channel_info info; |
1da177e4 LT |
660 | int res; |
661 | ||
662 | if (copy_from_user(&info, _info, sizeof(info))) | |
663 | return -EFAULT; | |
664 | res = snd_pcm_channel_info(substream, &info); | |
665 | if (res < 0) | |
666 | return res; | |
667 | if (copy_to_user(_info, &info, sizeof(info))) | |
668 | return -EFAULT; | |
669 | return 0; | |
670 | } | |
671 | ||
877211f5 | 672 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 673 | { |
877211f5 | 674 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
675 | if (runtime->trigger_master == NULL) |
676 | return; | |
677 | if (runtime->trigger_master == substream) { | |
b751eef1 | 678 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); |
1da177e4 LT |
679 | } else { |
680 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
681 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
682 | } | |
683 | runtime->trigger_master = NULL; | |
684 | } | |
685 | ||
686 | struct action_ops { | |
877211f5 TI |
687 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
688 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
689 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
690 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
691 | }; |
692 | ||
693 | /* | |
694 | * this functions is core for handling of linked stream | |
695 | * Note: the stream state might be changed also on failure | |
696 | * Note2: call with calling stream lock + link lock | |
697 | */ | |
698 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 699 | struct snd_pcm_substream *substream, |
1da177e4 LT |
700 | int state, int do_lock) |
701 | { | |
877211f5 TI |
702 | struct snd_pcm_substream *s = NULL; |
703 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
704 | int res = 0; |
705 | ||
ef991b95 | 706 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 707 | if (do_lock && s != substream) |
208eee2a FD |
708 | spin_lock_nested(&s->self_group.lock, |
709 | SINGLE_DEPTH_NESTING); | |
1da177e4 LT |
710 | res = ops->pre_action(s, state); |
711 | if (res < 0) | |
712 | goto _unlock; | |
713 | } | |
ef991b95 | 714 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
715 | res = ops->do_action(s, state); |
716 | if (res < 0) { | |
717 | if (ops->undo_action) { | |
ef991b95 | 718 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
719 | if (s1 == s) /* failed stream */ |
720 | break; | |
721 | ops->undo_action(s1, state); | |
722 | } | |
723 | } | |
724 | s = NULL; /* unlock all */ | |
725 | goto _unlock; | |
726 | } | |
727 | } | |
ef991b95 | 728 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
729 | ops->post_action(s, state); |
730 | } | |
731 | _unlock: | |
732 | if (do_lock) { | |
733 | /* unlock streams */ | |
ef991b95 | 734 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
735 | if (s1 != substream) |
736 | spin_unlock(&s1->self_group.lock); | |
737 | if (s1 == s) /* end */ | |
738 | break; | |
739 | } | |
740 | } | |
741 | return res; | |
742 | } | |
743 | ||
744 | /* | |
745 | * Note: call with stream lock | |
746 | */ | |
747 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 748 | struct snd_pcm_substream *substream, |
1da177e4 LT |
749 | int state) |
750 | { | |
751 | int res; | |
752 | ||
753 | res = ops->pre_action(substream, state); | |
754 | if (res < 0) | |
755 | return res; | |
756 | res = ops->do_action(substream, state); | |
757 | if (res == 0) | |
758 | ops->post_action(substream, state); | |
759 | else if (ops->undo_action) | |
760 | ops->undo_action(substream, state); | |
761 | return res; | |
762 | } | |
763 | ||
764 | /* | |
765 | * Note: call with stream lock | |
766 | */ | |
767 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 768 | struct snd_pcm_substream *substream, |
1da177e4 LT |
769 | int state) |
770 | { | |
771 | int res; | |
772 | ||
773 | if (snd_pcm_stream_linked(substream)) { | |
774 | if (!spin_trylock(&substream->group->lock)) { | |
775 | spin_unlock(&substream->self_group.lock); | |
776 | spin_lock(&substream->group->lock); | |
777 | spin_lock(&substream->self_group.lock); | |
778 | } | |
779 | res = snd_pcm_action_group(ops, substream, state, 1); | |
780 | spin_unlock(&substream->group->lock); | |
781 | } else { | |
782 | res = snd_pcm_action_single(ops, substream, state); | |
783 | } | |
784 | return res; | |
785 | } | |
786 | ||
787 | /* | |
788 | * Note: don't use any locks before | |
789 | */ | |
790 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 791 | struct snd_pcm_substream *substream, |
1da177e4 LT |
792 | int state) |
793 | { | |
794 | int res; | |
795 | ||
796 | read_lock_irq(&snd_pcm_link_rwlock); | |
797 | if (snd_pcm_stream_linked(substream)) { | |
798 | spin_lock(&substream->group->lock); | |
799 | spin_lock(&substream->self_group.lock); | |
800 | res = snd_pcm_action_group(ops, substream, state, 1); | |
801 | spin_unlock(&substream->self_group.lock); | |
802 | spin_unlock(&substream->group->lock); | |
803 | } else { | |
804 | spin_lock(&substream->self_group.lock); | |
805 | res = snd_pcm_action_single(ops, substream, state); | |
806 | spin_unlock(&substream->self_group.lock); | |
807 | } | |
808 | read_unlock_irq(&snd_pcm_link_rwlock); | |
809 | return res; | |
810 | } | |
811 | ||
812 | /* | |
813 | */ | |
814 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 815 | struct snd_pcm_substream *substream, |
1da177e4 LT |
816 | int state) |
817 | { | |
818 | int res; | |
819 | ||
820 | down_read(&snd_pcm_link_rwsem); | |
821 | if (snd_pcm_stream_linked(substream)) | |
822 | res = snd_pcm_action_group(ops, substream, state, 0); | |
823 | else | |
824 | res = snd_pcm_action_single(ops, substream, state); | |
825 | up_read(&snd_pcm_link_rwsem); | |
826 | return res; | |
827 | } | |
828 | ||
829 | /* | |
830 | * start callbacks | |
831 | */ | |
877211f5 | 832 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 833 | { |
877211f5 | 834 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
835 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
836 | return -EBADFD; | |
837 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
838 | !snd_pcm_playback_data(substream)) | |
839 | return -EPIPE; | |
840 | runtime->trigger_master = substream; | |
841 | return 0; | |
842 | } | |
843 | ||
877211f5 | 844 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
845 | { |
846 | if (substream->runtime->trigger_master != substream) | |
847 | return 0; | |
848 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
849 | } | |
850 | ||
877211f5 | 851 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
852 | { |
853 | if (substream->runtime->trigger_master == substream) | |
854 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
855 | } | |
856 | ||
877211f5 | 857 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 858 | { |
877211f5 | 859 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 860 | snd_pcm_trigger_tstamp(substream); |
6af3fb72 | 861 | runtime->hw_ptr_jiffies = jiffies; |
1da177e4 LT |
862 | runtime->status->state = state; |
863 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
864 | runtime->silence_size > 0) | |
865 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1da177e4 | 866 | if (substream->timer) |
877211f5 TI |
867 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
868 | &runtime->trigger_tstamp); | |
1da177e4 LT |
869 | } |
870 | ||
871 | static struct action_ops snd_pcm_action_start = { | |
872 | .pre_action = snd_pcm_pre_start, | |
873 | .do_action = snd_pcm_do_start, | |
874 | .undo_action = snd_pcm_undo_start, | |
875 | .post_action = snd_pcm_post_start | |
876 | }; | |
877 | ||
878 | /** | |
1c85cc64 | 879 | * snd_pcm_start - start all linked streams |
df8db936 | 880 | * @substream: the PCM substream instance |
1da177e4 | 881 | */ |
877211f5 | 882 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 883 | { |
877211f5 TI |
884 | return snd_pcm_action(&snd_pcm_action_start, substream, |
885 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
886 | } |
887 | ||
888 | /* | |
889 | * stop callbacks | |
890 | */ | |
877211f5 | 891 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 892 | { |
877211f5 | 893 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
894 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
895 | return -EBADFD; | |
896 | runtime->trigger_master = substream; | |
897 | return 0; | |
898 | } | |
899 | ||
877211f5 | 900 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
901 | { |
902 | if (substream->runtime->trigger_master == substream && | |
903 | snd_pcm_running(substream)) | |
904 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
905 | return 0; /* unconditonally stop all substreams */ | |
906 | } | |
907 | ||
877211f5 | 908 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 909 | { |
877211f5 | 910 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
911 | if (runtime->status->state != state) { |
912 | snd_pcm_trigger_tstamp(substream); | |
913 | if (substream->timer) | |
877211f5 TI |
914 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
915 | &runtime->trigger_tstamp); | |
1da177e4 | 916 | runtime->status->state = state; |
1da177e4 LT |
917 | } |
918 | wake_up(&runtime->sleep); | |
919 | } | |
920 | ||
921 | static struct action_ops snd_pcm_action_stop = { | |
922 | .pre_action = snd_pcm_pre_stop, | |
923 | .do_action = snd_pcm_do_stop, | |
924 | .post_action = snd_pcm_post_stop | |
925 | }; | |
926 | ||
927 | /** | |
1c85cc64 | 928 | * snd_pcm_stop - try to stop all running streams in the substream group |
df8db936 TI |
929 | * @substream: the PCM substream instance |
930 | * @state: PCM state after stopping the stream | |
1da177e4 | 931 | * |
1c85cc64 | 932 | * The state of each stream is then changed to the given state unconditionally. |
1da177e4 | 933 | */ |
877211f5 | 934 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
935 | { |
936 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
937 | } | |
938 | ||
e88e8ae6 TI |
939 | EXPORT_SYMBOL(snd_pcm_stop); |
940 | ||
1da177e4 | 941 | /** |
1c85cc64 | 942 | * snd_pcm_drain_done - stop the DMA only when the given stream is playback |
df8db936 | 943 | * @substream: the PCM substream |
1da177e4 | 944 | * |
1c85cc64 | 945 | * After stopping, the state is changed to SETUP. |
1da177e4 LT |
946 | * Unlike snd_pcm_stop(), this affects only the given stream. |
947 | */ | |
877211f5 | 948 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 949 | { |
877211f5 TI |
950 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
951 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
952 | } |
953 | ||
954 | /* | |
955 | * pause callbacks | |
956 | */ | |
877211f5 | 957 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 958 | { |
877211f5 | 959 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
960 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
961 | return -ENOSYS; | |
962 | if (push) { | |
963 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
964 | return -EBADFD; | |
965 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
966 | return -EBADFD; | |
967 | runtime->trigger_master = substream; | |
968 | return 0; | |
969 | } | |
970 | ||
877211f5 | 971 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
972 | { |
973 | if (substream->runtime->trigger_master != substream) | |
974 | return 0; | |
6af3fb72 TI |
975 | /* The jiffies check in snd_pcm_update_hw_ptr*() is done by |
976 | * a delta betwen the current jiffies, this gives a large enough | |
977 | * delta, effectively to skip the check once. | |
978 | */ | |
979 | substream->runtime->hw_ptr_jiffies = jiffies - HZ * 1000; | |
1da177e4 LT |
980 | return substream->ops->trigger(substream, |
981 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
982 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
983 | } | |
984 | ||
877211f5 | 985 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
986 | { |
987 | if (substream->runtime->trigger_master == substream) | |
988 | substream->ops->trigger(substream, | |
989 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
990 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
991 | } | |
992 | ||
877211f5 | 993 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 994 | { |
877211f5 | 995 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
996 | snd_pcm_trigger_tstamp(substream); |
997 | if (push) { | |
998 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
999 | if (substream->timer) | |
877211f5 TI |
1000 | snd_timer_notify(substream->timer, |
1001 | SNDRV_TIMER_EVENT_MPAUSE, | |
1002 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1003 | wake_up(&runtime->sleep); |
1004 | } else { | |
1005 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1da177e4 | 1006 | if (substream->timer) |
877211f5 TI |
1007 | snd_timer_notify(substream->timer, |
1008 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1009 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1010 | } |
1011 | } | |
1012 | ||
1013 | static struct action_ops snd_pcm_action_pause = { | |
1014 | .pre_action = snd_pcm_pre_pause, | |
1015 | .do_action = snd_pcm_do_pause, | |
1016 | .undo_action = snd_pcm_undo_pause, | |
1017 | .post_action = snd_pcm_post_pause | |
1018 | }; | |
1019 | ||
1020 | /* | |
1021 | * Push/release the pause for all linked streams. | |
1022 | */ | |
877211f5 | 1023 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1024 | { |
1025 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1026 | } | |
1027 | ||
1028 | #ifdef CONFIG_PM | |
1029 | /* suspend */ | |
1030 | ||
877211f5 | 1031 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1032 | { |
877211f5 | 1033 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1034 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1035 | return -EBUSY; | |
1036 | runtime->trigger_master = substream; | |
1037 | return 0; | |
1038 | } | |
1039 | ||
877211f5 | 1040 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1041 | { |
877211f5 | 1042 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1043 | if (runtime->trigger_master != substream) |
1044 | return 0; | |
1045 | if (! snd_pcm_running(substream)) | |
1046 | return 0; | |
1047 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1048 | return 0; /* suspend unconditionally */ | |
1049 | } | |
1050 | ||
877211f5 | 1051 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1052 | { |
877211f5 | 1053 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1054 | snd_pcm_trigger_tstamp(substream); |
1055 | if (substream->timer) | |
877211f5 TI |
1056 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1057 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1058 | runtime->status->suspended_state = runtime->status->state; |
1059 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1da177e4 LT |
1060 | wake_up(&runtime->sleep); |
1061 | } | |
1062 | ||
1063 | static struct action_ops snd_pcm_action_suspend = { | |
1064 | .pre_action = snd_pcm_pre_suspend, | |
1065 | .do_action = snd_pcm_do_suspend, | |
1066 | .post_action = snd_pcm_post_suspend | |
1067 | }; | |
1068 | ||
1069 | /** | |
1c85cc64 | 1070 | * snd_pcm_suspend - trigger SUSPEND to all linked streams |
df8db936 | 1071 | * @substream: the PCM substream |
1da177e4 | 1072 | * |
1da177e4 LT |
1073 | * After this call, all streams are changed to SUSPENDED state. |
1074 | */ | |
877211f5 | 1075 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1076 | { |
1077 | int err; | |
1078 | unsigned long flags; | |
1079 | ||
603bf524 TI |
1080 | if (! substream) |
1081 | return 0; | |
1082 | ||
1da177e4 LT |
1083 | snd_pcm_stream_lock_irqsave(substream, flags); |
1084 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1085 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1086 | return err; | |
1087 | } | |
1088 | ||
e88e8ae6 TI |
1089 | EXPORT_SYMBOL(snd_pcm_suspend); |
1090 | ||
1da177e4 | 1091 | /** |
1c85cc64 | 1092 | * snd_pcm_suspend_all - trigger SUSPEND to all substreams in the given pcm |
df8db936 | 1093 | * @pcm: the PCM instance |
1da177e4 | 1094 | * |
1da177e4 LT |
1095 | * After this call, all streams are changed to SUSPENDED state. |
1096 | */ | |
877211f5 | 1097 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1098 | { |
877211f5 | 1099 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1100 | int stream, err = 0; |
1101 | ||
603bf524 TI |
1102 | if (! pcm) |
1103 | return 0; | |
1104 | ||
1da177e4 | 1105 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1106 | for (substream = pcm->streams[stream].substream; |
1107 | substream; substream = substream->next) { | |
1da177e4 LT |
1108 | /* FIXME: the open/close code should lock this as well */ |
1109 | if (substream->runtime == NULL) | |
1110 | continue; | |
1111 | err = snd_pcm_suspend(substream); | |
1112 | if (err < 0 && err != -EBUSY) | |
1113 | return err; | |
1114 | } | |
1115 | } | |
1116 | return 0; | |
1117 | } | |
1118 | ||
e88e8ae6 TI |
1119 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1120 | ||
1da177e4 LT |
1121 | /* resume */ |
1122 | ||
877211f5 | 1123 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1124 | { |
877211f5 | 1125 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1126 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1127 | return -ENOSYS; | |
1128 | runtime->trigger_master = substream; | |
1129 | return 0; | |
1130 | } | |
1131 | ||
877211f5 | 1132 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1133 | { |
877211f5 | 1134 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1135 | if (runtime->trigger_master != substream) |
1136 | return 0; | |
1137 | /* DMA not running previously? */ | |
1138 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1139 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1140 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1141 | return 0; | |
1142 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1143 | } | |
1144 | ||
877211f5 | 1145 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1146 | { |
1147 | if (substream->runtime->trigger_master == substream && | |
1148 | snd_pcm_running(substream)) | |
1149 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1150 | } | |
1151 | ||
877211f5 | 1152 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1153 | { |
877211f5 | 1154 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1155 | snd_pcm_trigger_tstamp(substream); |
1156 | if (substream->timer) | |
877211f5 TI |
1157 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1158 | &runtime->trigger_tstamp); | |
1da177e4 | 1159 | runtime->status->state = runtime->status->suspended_state; |
1da177e4 LT |
1160 | } |
1161 | ||
1162 | static struct action_ops snd_pcm_action_resume = { | |
1163 | .pre_action = snd_pcm_pre_resume, | |
1164 | .do_action = snd_pcm_do_resume, | |
1165 | .undo_action = snd_pcm_undo_resume, | |
1166 | .post_action = snd_pcm_post_resume | |
1167 | }; | |
1168 | ||
877211f5 | 1169 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1170 | { |
877211f5 | 1171 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1172 | int res; |
1173 | ||
1174 | snd_power_lock(card); | |
cbac4b0c | 1175 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1176 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1177 | snd_power_unlock(card); | |
1178 | return res; | |
1179 | } | |
1180 | ||
1181 | #else | |
1182 | ||
877211f5 | 1183 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1184 | { |
1185 | return -ENOSYS; | |
1186 | } | |
1187 | ||
1188 | #endif /* CONFIG_PM */ | |
1189 | ||
1190 | /* | |
1191 | * xrun ioctl | |
1192 | * | |
1193 | * Change the RUNNING stream(s) to XRUN state. | |
1194 | */ | |
877211f5 | 1195 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1196 | { |
877211f5 TI |
1197 | struct snd_card *card = substream->pcm->card; |
1198 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1199 | int result; |
1200 | ||
1201 | snd_power_lock(card); | |
1202 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1203 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1204 | if (result < 0) |
1205 | goto _unlock; | |
1206 | } | |
1207 | ||
1208 | snd_pcm_stream_lock_irq(substream); | |
1209 | switch (runtime->status->state) { | |
1210 | case SNDRV_PCM_STATE_XRUN: | |
1211 | result = 0; /* already there */ | |
1212 | break; | |
1213 | case SNDRV_PCM_STATE_RUNNING: | |
1214 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1215 | break; | |
1216 | default: | |
1217 | result = -EBADFD; | |
1218 | } | |
1219 | snd_pcm_stream_unlock_irq(substream); | |
1220 | _unlock: | |
1221 | snd_power_unlock(card); | |
1222 | return result; | |
1223 | } | |
1224 | ||
1225 | /* | |
1226 | * reset ioctl | |
1227 | */ | |
877211f5 | 1228 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1229 | { |
877211f5 | 1230 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1231 | switch (runtime->status->state) { |
1232 | case SNDRV_PCM_STATE_RUNNING: | |
1233 | case SNDRV_PCM_STATE_PREPARED: | |
1234 | case SNDRV_PCM_STATE_PAUSED: | |
1235 | case SNDRV_PCM_STATE_SUSPENDED: | |
1236 | return 0; | |
1237 | default: | |
1238 | return -EBADFD; | |
1239 | } | |
1240 | } | |
1241 | ||
877211f5 | 1242 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1243 | { |
877211f5 | 1244 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1245 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1246 | if (err < 0) | |
1247 | return err; | |
1da177e4 | 1248 | runtime->hw_ptr_base = 0; |
877211f5 TI |
1249 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1250 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1251 | runtime->silence_start = runtime->status->hw_ptr; |
1252 | runtime->silence_filled = 0; | |
1253 | return 0; | |
1254 | } | |
1255 | ||
877211f5 | 1256 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1257 | { |
877211f5 | 1258 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1259 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1260 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1261 | runtime->silence_size > 0) | |
1262 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1263 | } | |
1264 | ||
1265 | static struct action_ops snd_pcm_action_reset = { | |
1266 | .pre_action = snd_pcm_pre_reset, | |
1267 | .do_action = snd_pcm_do_reset, | |
1268 | .post_action = snd_pcm_post_reset | |
1269 | }; | |
1270 | ||
877211f5 | 1271 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1272 | { |
1273 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1274 | } | |
1275 | ||
1276 | /* | |
1277 | * prepare ioctl | |
1278 | */ | |
0df63e44 TI |
1279 | /* we use the second argument for updating f_flags */ |
1280 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, | |
1281 | int f_flags) | |
1da177e4 | 1282 | { |
877211f5 | 1283 | struct snd_pcm_runtime *runtime = substream->runtime; |
de1b8b93 TI |
1284 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1285 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1286 | return -EBADFD; |
1287 | if (snd_pcm_running(substream)) | |
1288 | return -EBUSY; | |
0df63e44 | 1289 | substream->f_flags = f_flags; |
1da177e4 LT |
1290 | return 0; |
1291 | } | |
1292 | ||
877211f5 | 1293 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1294 | { |
1295 | int err; | |
1296 | err = substream->ops->prepare(substream); | |
1297 | if (err < 0) | |
1298 | return err; | |
1299 | return snd_pcm_do_reset(substream, 0); | |
1300 | } | |
1301 | ||
877211f5 | 1302 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1303 | { |
877211f5 | 1304 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1305 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1306 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1307 | } | |
1308 | ||
1309 | static struct action_ops snd_pcm_action_prepare = { | |
1310 | .pre_action = snd_pcm_pre_prepare, | |
1311 | .do_action = snd_pcm_do_prepare, | |
1312 | .post_action = snd_pcm_post_prepare | |
1313 | }; | |
1314 | ||
1315 | /** | |
1c85cc64 | 1316 | * snd_pcm_prepare - prepare the PCM substream to be triggerable |
df8db936 | 1317 | * @substream: the PCM substream instance |
0df63e44 | 1318 | * @file: file to refer f_flags |
1da177e4 | 1319 | */ |
0df63e44 TI |
1320 | static int snd_pcm_prepare(struct snd_pcm_substream *substream, |
1321 | struct file *file) | |
1da177e4 LT |
1322 | { |
1323 | int res; | |
877211f5 | 1324 | struct snd_card *card = substream->pcm->card; |
0df63e44 TI |
1325 | int f_flags; |
1326 | ||
1327 | if (file) | |
1328 | f_flags = file->f_flags; | |
1329 | else | |
1330 | f_flags = substream->f_flags; | |
1da177e4 LT |
1331 | |
1332 | snd_power_lock(card); | |
cbac4b0c | 1333 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
0df63e44 TI |
1334 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, |
1335 | substream, f_flags); | |
1da177e4 LT |
1336 | snd_power_unlock(card); |
1337 | return res; | |
1338 | } | |
1339 | ||
1340 | /* | |
1341 | * drain ioctl | |
1342 | */ | |
1343 | ||
877211f5 | 1344 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1345 | { |
0df63e44 | 1346 | if (substream->f_flags & O_NONBLOCK) |
1da177e4 LT |
1347 | return -EAGAIN; |
1348 | substream->runtime->trigger_master = substream; | |
1349 | return 0; | |
1350 | } | |
1351 | ||
877211f5 | 1352 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1353 | { |
877211f5 | 1354 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1355 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1356 | switch (runtime->status->state) { | |
1357 | case SNDRV_PCM_STATE_PREPARED: | |
1358 | /* start playback stream if possible */ | |
1359 | if (! snd_pcm_playback_empty(substream)) { | |
1360 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1361 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1362 | } | |
1363 | break; | |
1364 | case SNDRV_PCM_STATE_RUNNING: | |
1365 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1366 | break; | |
1367 | default: | |
1368 | break; | |
1369 | } | |
1370 | } else { | |
1371 | /* stop running stream */ | |
1372 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
b05e5787 | 1373 | int new_state = snd_pcm_capture_avail(runtime) > 0 ? |
1da177e4 | 1374 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; |
b05e5787 MÅš |
1375 | snd_pcm_do_stop(substream, new_state); |
1376 | snd_pcm_post_stop(substream, new_state); | |
1da177e4 LT |
1377 | } |
1378 | } | |
1379 | return 0; | |
1380 | } | |
1381 | ||
877211f5 | 1382 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1383 | { |
1384 | } | |
1385 | ||
1386 | static struct action_ops snd_pcm_action_drain_init = { | |
1387 | .pre_action = snd_pcm_pre_drain_init, | |
1388 | .do_action = snd_pcm_do_drain_init, | |
1389 | .post_action = snd_pcm_post_drain_init | |
1390 | }; | |
1391 | ||
1392 | struct drain_rec { | |
877211f5 | 1393 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1394 | wait_queue_t wait; |
1395 | snd_pcm_uframes_t stop_threshold; | |
1396 | }; | |
1397 | ||
877211f5 | 1398 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1399 | |
1400 | /* | |
1401 | * Drain the stream(s). | |
1402 | * When the substream is linked, sync until the draining of all playback streams | |
1403 | * is finished. | |
1404 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1405 | * (capture only) state. | |
1406 | */ | |
877211f5 | 1407 | static int snd_pcm_drain(struct snd_pcm_substream *substream) |
1da177e4 | 1408 | { |
877211f5 TI |
1409 | struct snd_card *card; |
1410 | struct snd_pcm_runtime *runtime; | |
ef991b95 | 1411 | struct snd_pcm_substream *s; |
1da177e4 LT |
1412 | int result = 0; |
1413 | int i, num_drecs; | |
1414 | struct drain_rec *drec, drec_tmp, *d; | |
1415 | ||
1da177e4 LT |
1416 | card = substream->pcm->card; |
1417 | runtime = substream->runtime; | |
1418 | ||
1419 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1420 | return -EBADFD; | |
1421 | ||
1da177e4 LT |
1422 | snd_power_lock(card); |
1423 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1424 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1425 | if (result < 0) { |
1426 | snd_power_unlock(card); | |
1427 | return result; | |
1428 | } | |
1da177e4 LT |
1429 | } |
1430 | ||
1431 | /* allocate temporary record for drain sync */ | |
21cb2a2e | 1432 | down_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1433 | if (snd_pcm_stream_linked(substream)) { |
1434 | drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL); | |
1435 | if (! drec) { | |
21cb2a2e TI |
1436 | up_read(&snd_pcm_link_rwsem); |
1437 | snd_power_unlock(card); | |
1438 | return -ENOMEM; | |
1da177e4 LT |
1439 | } |
1440 | } else | |
1441 | drec = &drec_tmp; | |
1442 | ||
21cb2a2e | 1443 | /* count only playback streams */ |
1da177e4 | 1444 | num_drecs = 0; |
ef991b95 | 1445 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 1446 | runtime = s->runtime; |
1da177e4 LT |
1447 | if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1448 | d = &drec[num_drecs++]; | |
1449 | d->substream = s; | |
1450 | init_waitqueue_entry(&d->wait, current); | |
1451 | add_wait_queue(&runtime->sleep, &d->wait); | |
1452 | /* stop_threshold fixup to avoid endless loop when | |
1453 | * stop_threshold > buffer_size | |
1454 | */ | |
1455 | d->stop_threshold = runtime->stop_threshold; | |
1456 | if (runtime->stop_threshold > runtime->buffer_size) | |
1457 | runtime->stop_threshold = runtime->buffer_size; | |
1458 | } | |
1459 | } | |
21cb2a2e | 1460 | up_read(&snd_pcm_link_rwsem); |
21cb2a2e TI |
1461 | |
1462 | snd_pcm_stream_lock_irq(substream); | |
1463 | /* resume pause */ | |
1a7fa543 | 1464 | if (substream->runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
21cb2a2e TI |
1465 | snd_pcm_pause(substream, 0); |
1466 | ||
1467 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1468 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
1469 | if (result < 0) { | |
1470 | snd_pcm_stream_unlock_irq(substream); | |
1471 | goto _error; | |
1472 | } | |
1da177e4 LT |
1473 | |
1474 | for (;;) { | |
1475 | long tout; | |
1476 | if (signal_pending(current)) { | |
1477 | result = -ERESTARTSYS; | |
1478 | break; | |
1479 | } | |
21cb2a2e TI |
1480 | /* all finished? */ |
1481 | for (i = 0; i < num_drecs; i++) { | |
1482 | runtime = drec[i].substream->runtime; | |
1483 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
1484 | break; | |
1485 | } | |
1486 | if (i == num_drecs) | |
1487 | break; /* yes, all drained */ | |
1488 | ||
1da177e4 LT |
1489 | set_current_state(TASK_INTERRUPTIBLE); |
1490 | snd_pcm_stream_unlock_irq(substream); | |
1491 | snd_power_unlock(card); | |
1492 | tout = schedule_timeout(10 * HZ); | |
1493 | snd_power_lock(card); | |
1494 | snd_pcm_stream_lock_irq(substream); | |
1495 | if (tout == 0) { | |
1496 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1497 | result = -ESTRPIPE; | |
1498 | else { | |
1499 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1500 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1501 | result = -EIO; | |
1502 | } | |
1503 | break; | |
1504 | } | |
1da177e4 | 1505 | } |
21cb2a2e TI |
1506 | |
1507 | snd_pcm_stream_unlock_irq(substream); | |
1508 | ||
1509 | _error: | |
1da177e4 LT |
1510 | for (i = 0; i < num_drecs; i++) { |
1511 | d = &drec[i]; | |
1512 | runtime = d->substream->runtime; | |
1513 | remove_wait_queue(&runtime->sleep, &d->wait); | |
1514 | runtime->stop_threshold = d->stop_threshold; | |
1515 | } | |
1516 | ||
1da177e4 LT |
1517 | if (drec != &drec_tmp) |
1518 | kfree(drec); | |
1da177e4 | 1519 | snd_power_unlock(card); |
1da177e4 LT |
1520 | |
1521 | return result; | |
1522 | } | |
1523 | ||
1524 | /* | |
1525 | * drop ioctl | |
1526 | * | |
1527 | * Immediately put all linked substreams into SETUP state. | |
1528 | */ | |
877211f5 | 1529 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1530 | { |
877211f5 TI |
1531 | struct snd_pcm_runtime *runtime; |
1532 | struct snd_card *card; | |
1da177e4 LT |
1533 | int result = 0; |
1534 | ||
7eaa943c TI |
1535 | if (PCM_RUNTIME_CHECK(substream)) |
1536 | return -ENXIO; | |
1da177e4 LT |
1537 | runtime = substream->runtime; |
1538 | card = substream->pcm->card; | |
1539 | ||
de1b8b93 | 1540 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
24e8fc49 TI |
1541 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED || |
1542 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1da177e4 LT |
1543 | return -EBADFD; |
1544 | ||
1da177e4 LT |
1545 | snd_pcm_stream_lock_irq(substream); |
1546 | /* resume pause */ | |
1547 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1548 | snd_pcm_pause(substream, 0); | |
1549 | ||
1550 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1551 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1552 | snd_pcm_stream_unlock_irq(substream); | |
24e8fc49 | 1553 | |
1da177e4 LT |
1554 | return result; |
1555 | } | |
1556 | ||
1557 | ||
1558 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1559 | static struct file *snd_pcm_file_fd(int fd) |
1560 | { | |
1561 | struct file *file; | |
1562 | struct inode *inode; | |
f87135f5 CL |
1563 | unsigned int minor; |
1564 | ||
1da177e4 LT |
1565 | file = fget(fd); |
1566 | if (!file) | |
1567 | return NULL; | |
7bc56323 | 1568 | inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
1569 | if (!S_ISCHR(inode->i_mode) || |
1570 | imajor(inode) != snd_major) { | |
1571 | fput(file); | |
1572 | return NULL; | |
1573 | } | |
1574 | minor = iminor(inode); | |
f87135f5 CL |
1575 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1576 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1577 | fput(file); |
1578 | return NULL; | |
1579 | } | |
1580 | return file; | |
1581 | } | |
1582 | ||
1583 | /* | |
1584 | * PCM link handling | |
1585 | */ | |
877211f5 | 1586 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1587 | { |
1588 | int res = 0; | |
1589 | struct file *file; | |
877211f5 TI |
1590 | struct snd_pcm_file *pcm_file; |
1591 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1592 | |
1593 | file = snd_pcm_file_fd(fd); | |
1594 | if (!file) | |
1595 | return -EBADFD; | |
1596 | pcm_file = file->private_data; | |
1597 | substream1 = pcm_file->substream; | |
1598 | down_write(&snd_pcm_link_rwsem); | |
1599 | write_lock_irq(&snd_pcm_link_rwlock); | |
1600 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1601 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1602 | res = -EBADFD; | |
1603 | goto _end; | |
1604 | } | |
1605 | if (snd_pcm_stream_linked(substream1)) { | |
1606 | res = -EALREADY; | |
1607 | goto _end; | |
1608 | } | |
1609 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1610 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1611 | if (substream->group == NULL) { |
1612 | res = -ENOMEM; | |
1613 | goto _end; | |
1614 | } | |
1615 | spin_lock_init(&substream->group->lock); | |
1616 | INIT_LIST_HEAD(&substream->group->substreams); | |
1617 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1618 | substream->group->count = 1; | |
1619 | } | |
1620 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1621 | substream->group->count++; | |
1622 | substream1->group = substream->group; | |
1623 | _end: | |
1624 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1625 | up_write(&snd_pcm_link_rwsem); | |
1626 | fput(file); | |
1627 | return res; | |
1628 | } | |
1629 | ||
877211f5 | 1630 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1631 | { |
1632 | substream->group = &substream->self_group; | |
1633 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1634 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1635 | } | |
1636 | ||
877211f5 | 1637 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 | 1638 | { |
ef991b95 | 1639 | struct snd_pcm_substream *s; |
1da177e4 LT |
1640 | int res = 0; |
1641 | ||
1642 | down_write(&snd_pcm_link_rwsem); | |
1643 | write_lock_irq(&snd_pcm_link_rwlock); | |
1644 | if (!snd_pcm_stream_linked(substream)) { | |
1645 | res = -EALREADY; | |
1646 | goto _end; | |
1647 | } | |
1648 | list_del(&substream->link_list); | |
1649 | substream->group->count--; | |
1650 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
ef991b95 TI |
1651 | snd_pcm_group_for_each_entry(s, substream) { |
1652 | relink_to_local(s); | |
1da177e4 LT |
1653 | break; |
1654 | } | |
1655 | kfree(substream->group); | |
1656 | } | |
1657 | relink_to_local(substream); | |
1658 | _end: | |
1659 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1660 | up_write(&snd_pcm_link_rwsem); | |
1661 | return res; | |
1662 | } | |
1663 | ||
1664 | /* | |
1665 | * hw configurator | |
1666 | */ | |
877211f5 TI |
1667 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1668 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1669 | { |
877211f5 | 1670 | struct snd_interval t; |
1da177e4 LT |
1671 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1672 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1673 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1674 | } | |
1675 | ||
877211f5 TI |
1676 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1677 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1678 | { |
877211f5 | 1679 | struct snd_interval t; |
1da177e4 LT |
1680 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1681 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1682 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1683 | } | |
1684 | ||
877211f5 TI |
1685 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1686 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1687 | { |
877211f5 | 1688 | struct snd_interval t; |
1da177e4 LT |
1689 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1690 | hw_param_interval_c(params, rule->deps[1]), | |
1691 | (unsigned long) rule->private, &t); | |
1692 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1693 | } | |
1694 | ||
877211f5 TI |
1695 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1696 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1697 | { |
877211f5 | 1698 | struct snd_interval t; |
1da177e4 LT |
1699 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1700 | (unsigned long) rule->private, | |
1701 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1702 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1703 | } | |
1704 | ||
877211f5 TI |
1705 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1706 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1707 | { |
1708 | unsigned int k; | |
877211f5 TI |
1709 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1710 | struct snd_mask m; | |
1711 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1712 | snd_mask_any(&m); |
1713 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1714 | int bits; | |
1715 | if (! snd_mask_test(mask, k)) | |
1716 | continue; | |
1717 | bits = snd_pcm_format_physical_width(k); | |
1718 | if (bits <= 0) | |
1719 | continue; /* ignore invalid formats */ | |
1720 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1721 | snd_mask_reset(&m, k); | |
1722 | } | |
1723 | return snd_mask_refine(mask, &m); | |
1724 | } | |
1725 | ||
877211f5 TI |
1726 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1727 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1728 | { |
877211f5 | 1729 | struct snd_interval t; |
1da177e4 LT |
1730 | unsigned int k; |
1731 | t.min = UINT_MAX; | |
1732 | t.max = 0; | |
1733 | t.openmin = 0; | |
1734 | t.openmax = 0; | |
1735 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1736 | int bits; | |
1737 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1738 | continue; | |
1739 | bits = snd_pcm_format_physical_width(k); | |
1740 | if (bits <= 0) | |
1741 | continue; /* ignore invalid formats */ | |
1742 | if (t.min > (unsigned)bits) | |
1743 | t.min = bits; | |
1744 | if (t.max < (unsigned)bits) | |
1745 | t.max = bits; | |
1746 | } | |
1747 | t.integer = 1; | |
1748 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1749 | } | |
1750 | ||
1751 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1752 | #error "Change this table" | |
1753 | #endif | |
1754 | ||
1755 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1756 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1757 | ||
7653d557 CL |
1758 | const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = { |
1759 | .count = ARRAY_SIZE(rates), | |
1760 | .list = rates, | |
1761 | }; | |
1762 | ||
877211f5 TI |
1763 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1764 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1765 | { |
877211f5 | 1766 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 | 1767 | return snd_interval_list(hw_param_interval(params, rule->var), |
7653d557 CL |
1768 | snd_pcm_known_rates.count, |
1769 | snd_pcm_known_rates.list, hw->rates); | |
1da177e4 LT |
1770 | } |
1771 | ||
877211f5 TI |
1772 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1773 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1774 | { |
877211f5 TI |
1775 | struct snd_interval t; |
1776 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1777 | t.min = 0; |
1778 | t.max = substream->buffer_bytes_max; | |
1779 | t.openmin = 0; | |
1780 | t.openmax = 0; | |
1781 | t.integer = 1; | |
1782 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1783 | } | |
1784 | ||
877211f5 | 1785 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1786 | { |
877211f5 TI |
1787 | struct snd_pcm_runtime *runtime = substream->runtime; |
1788 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1789 | int k, err; |
1790 | ||
1791 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1792 | snd_mask_any(constrs_mask(constrs, k)); | |
1793 | } | |
1794 | ||
1795 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1796 | snd_interval_any(constrs_interval(constrs, k)); | |
1797 | } | |
1798 | ||
1799 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1800 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1801 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1802 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1803 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1804 | ||
1805 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1806 | snd_pcm_hw_rule_format, NULL, | |
1807 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1808 | if (err < 0) | |
1809 | return err; | |
1810 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1811 | snd_pcm_hw_rule_sample_bits, NULL, | |
1812 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1813 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1814 | if (err < 0) | |
1815 | return err; | |
1816 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1817 | snd_pcm_hw_rule_div, NULL, | |
1818 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1819 | if (err < 0) | |
1820 | return err; | |
1821 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1822 | snd_pcm_hw_rule_mul, NULL, | |
1823 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1824 | if (err < 0) | |
1825 | return err; | |
1826 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1827 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1828 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1829 | if (err < 0) | |
1830 | return err; | |
1831 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1832 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1833 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1834 | if (err < 0) | |
1835 | return err; | |
1836 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1837 | snd_pcm_hw_rule_div, NULL, | |
1838 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1839 | if (err < 0) | |
1840 | return err; | |
1841 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1842 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1843 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1844 | if (err < 0) | |
1845 | return err; | |
1846 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1847 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1848 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1849 | if (err < 0) | |
1850 | return err; | |
1851 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1852 | snd_pcm_hw_rule_div, NULL, | |
1853 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1854 | if (err < 0) | |
1855 | return err; | |
1856 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1857 | snd_pcm_hw_rule_div, NULL, | |
1858 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1859 | if (err < 0) | |
1860 | return err; | |
1861 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1862 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1863 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1864 | if (err < 0) | |
1865 | return err; | |
1866 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1867 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1868 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1869 | if (err < 0) | |
1870 | return err; | |
1871 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1872 | snd_pcm_hw_rule_mul, NULL, | |
1873 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1874 | if (err < 0) | |
1875 | return err; | |
1876 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1877 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1878 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1879 | if (err < 0) | |
1880 | return err; | |
1881 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1882 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1883 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1884 | if (err < 0) | |
1885 | return err; | |
1886 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1887 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1888 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1889 | if (err < 0) | |
1890 | return err; | |
1891 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1892 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1893 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1894 | if (err < 0) | |
1895 | return err; | |
1896 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1897 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1898 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1899 | if (err < 0) | |
1900 | return err; | |
1901 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1902 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1903 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1904 | if (err < 0) | |
1905 | return err; | |
1906 | return 0; | |
1907 | } | |
1908 | ||
877211f5 | 1909 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1910 | { |
877211f5 TI |
1911 | struct snd_pcm_runtime *runtime = substream->runtime; |
1912 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1913 | int err; |
1914 | unsigned int mask = 0; | |
1915 | ||
1916 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1917 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1918 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1919 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1920 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1921 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1922 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1923 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1924 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1925 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1926 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1927 | } | |
1928 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
7eaa943c TI |
1929 | if (err < 0) |
1930 | return err; | |
1da177e4 LT |
1931 | |
1932 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
7eaa943c TI |
1933 | if (err < 0) |
1934 | return err; | |
1da177e4 LT |
1935 | |
1936 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
7eaa943c TI |
1937 | if (err < 0) |
1938 | return err; | |
1da177e4 LT |
1939 | |
1940 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1941 | hw->channels_min, hw->channels_max); | |
7eaa943c TI |
1942 | if (err < 0) |
1943 | return err; | |
1da177e4 LT |
1944 | |
1945 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1946 | hw->rate_min, hw->rate_max); | |
7eaa943c TI |
1947 | if (err < 0) |
1948 | return err; | |
1da177e4 LT |
1949 | |
1950 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1951 | hw->period_bytes_min, hw->period_bytes_max); | |
7eaa943c TI |
1952 | if (err < 0) |
1953 | return err; | |
1da177e4 LT |
1954 | |
1955 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1956 | hw->periods_min, hw->periods_max); | |
7eaa943c TI |
1957 | if (err < 0) |
1958 | return err; | |
1da177e4 LT |
1959 | |
1960 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1961 | hw->period_bytes_min, hw->buffer_bytes_max); | |
7eaa943c TI |
1962 | if (err < 0) |
1963 | return err; | |
1da177e4 LT |
1964 | |
1965 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1966 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1967 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1968 | if (err < 0) | |
1969 | return err; | |
1970 | ||
1971 | /* FIXME: remove */ | |
1972 | if (runtime->dma_bytes) { | |
1973 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
7eaa943c TI |
1974 | if (err < 0) |
1975 | return -EINVAL; | |
1da177e4 LT |
1976 | } |
1977 | ||
1978 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
1979 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1980 | snd_pcm_hw_rule_rate, hw, | |
1981 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1982 | if (err < 0) | |
1983 | return err; | |
1984 | } | |
1985 | ||
1986 | /* FIXME: this belong to lowlevel */ | |
1da177e4 LT |
1987 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); |
1988 | ||
1989 | return 0; | |
1990 | } | |
1991 | ||
3bf75f9b | 1992 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 1993 | { |
1da177e4 | 1994 | snd_pcm_unlink(substream); |
3bf75f9b TI |
1995 | } |
1996 | ||
1997 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
1998 | { | |
0df63e44 TI |
1999 | substream->ref_count--; |
2000 | if (substream->ref_count > 0) | |
2001 | return; | |
2002 | ||
3bf75f9b | 2003 | snd_pcm_drop(substream); |
3bf75f9b | 2004 | if (substream->hw_opened) { |
1da177e4 LT |
2005 | if (substream->ops->hw_free != NULL) |
2006 | substream->ops->hw_free(substream); | |
2007 | substream->ops->close(substream); | |
3bf75f9b | 2008 | substream->hw_opened = 0; |
1da177e4 | 2009 | } |
1576274d TI |
2010 | if (substream->pcm_release) { |
2011 | substream->pcm_release(substream); | |
2012 | substream->pcm_release = NULL; | |
2013 | } | |
3bf75f9b TI |
2014 | snd_pcm_detach_substream(substream); |
2015 | } | |
2016 | ||
e88e8ae6 TI |
2017 | EXPORT_SYMBOL(snd_pcm_release_substream); |
2018 | ||
3bf75f9b TI |
2019 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
2020 | struct file *file, | |
2021 | struct snd_pcm_substream **rsubstream) | |
2022 | { | |
2023 | struct snd_pcm_substream *substream; | |
2024 | int err; | |
2025 | ||
2026 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2027 | if (err < 0) | |
2028 | return err; | |
0df63e44 TI |
2029 | if (substream->ref_count > 1) { |
2030 | *rsubstream = substream; | |
2031 | return 0; | |
2032 | } | |
2033 | ||
3bf75f9b TI |
2034 | err = snd_pcm_hw_constraints_init(substream); |
2035 | if (err < 0) { | |
2036 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2037 | goto error; | |
2038 | } | |
2039 | ||
2040 | if ((err = substream->ops->open(substream)) < 0) | |
2041 | goto error; | |
2042 | ||
2043 | substream->hw_opened = 1; | |
2044 | ||
2045 | err = snd_pcm_hw_constraints_complete(substream); | |
2046 | if (err < 0) { | |
2047 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2048 | goto error; | |
2049 | } | |
2050 | ||
2051 | *rsubstream = substream; | |
1da177e4 | 2052 | return 0; |
3bf75f9b TI |
2053 | |
2054 | error: | |
2055 | snd_pcm_release_substream(substream); | |
2056 | return err; | |
1da177e4 LT |
2057 | } |
2058 | ||
e88e8ae6 TI |
2059 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2060 | ||
1da177e4 | 2061 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2062 | struct snd_pcm *pcm, |
1da177e4 | 2063 | int stream, |
877211f5 | 2064 | struct snd_pcm_file **rpcm_file) |
1da177e4 | 2065 | { |
877211f5 TI |
2066 | struct snd_pcm_file *pcm_file; |
2067 | struct snd_pcm_substream *substream; | |
2068 | struct snd_pcm_str *str; | |
3bf75f9b | 2069 | int err; |
1da177e4 | 2070 | |
7eaa943c TI |
2071 | if (rpcm_file) |
2072 | *rpcm_file = NULL; | |
1da177e4 | 2073 | |
3bf75f9b TI |
2074 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2075 | if (err < 0) | |
2076 | return err; | |
2077 | ||
548a648b TI |
2078 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
2079 | if (pcm_file == NULL) { | |
2080 | snd_pcm_release_substream(substream); | |
2081 | return -ENOMEM; | |
2082 | } | |
2083 | pcm_file->substream = substream; | |
2084 | if (substream->ref_count == 1) { | |
0df63e44 TI |
2085 | str = substream->pstr; |
2086 | substream->file = pcm_file; | |
2087 | substream->pcm_release = pcm_release_private; | |
1da177e4 | 2088 | } |
1da177e4 | 2089 | file->private_data = pcm_file; |
7eaa943c TI |
2090 | if (rpcm_file) |
2091 | *rpcm_file = pcm_file; | |
1da177e4 LT |
2092 | return 0; |
2093 | } | |
2094 | ||
f87135f5 CL |
2095 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2096 | { | |
2097 | struct snd_pcm *pcm; | |
2098 | ||
2099 | pcm = snd_lookup_minor_data(iminor(inode), | |
2100 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2101 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2102 | } | |
2103 | ||
2104 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2105 | { |
877211f5 | 2106 | struct snd_pcm *pcm; |
f87135f5 CL |
2107 | |
2108 | pcm = snd_lookup_minor_data(iminor(inode), | |
2109 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2110 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2111 | } | |
2112 | ||
2113 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2114 | { | |
2115 | int err; | |
877211f5 | 2116 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2117 | wait_queue_t wait; |
2118 | ||
1da177e4 LT |
2119 | if (pcm == NULL) { |
2120 | err = -ENODEV; | |
2121 | goto __error1; | |
2122 | } | |
2123 | err = snd_card_file_add(pcm->card, file); | |
2124 | if (err < 0) | |
2125 | goto __error1; | |
2126 | if (!try_module_get(pcm->card->module)) { | |
2127 | err = -EFAULT; | |
2128 | goto __error2; | |
2129 | } | |
2130 | init_waitqueue_entry(&wait, current); | |
2131 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2132 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2133 | while (1) { |
f87135f5 | 2134 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2135 | if (err >= 0) |
2136 | break; | |
2137 | if (err == -EAGAIN) { | |
2138 | if (file->f_flags & O_NONBLOCK) { | |
2139 | err = -EBUSY; | |
2140 | break; | |
2141 | } | |
2142 | } else | |
2143 | break; | |
2144 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2145 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2146 | schedule(); |
1a60d4c5 | 2147 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2148 | if (signal_pending(current)) { |
2149 | err = -ERESTARTSYS; | |
2150 | break; | |
2151 | } | |
2152 | } | |
2153 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2154 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2155 | if (err < 0) |
2156 | goto __error; | |
2157 | return err; | |
2158 | ||
2159 | __error: | |
2160 | module_put(pcm->card->module); | |
2161 | __error2: | |
2162 | snd_card_file_remove(pcm->card, file); | |
2163 | __error1: | |
2164 | return err; | |
2165 | } | |
2166 | ||
2167 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2168 | { | |
877211f5 TI |
2169 | struct snd_pcm *pcm; |
2170 | struct snd_pcm_substream *substream; | |
2171 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2172 | |
2173 | pcm_file = file->private_data; | |
2174 | substream = pcm_file->substream; | |
7eaa943c TI |
2175 | if (snd_BUG_ON(!substream)) |
2176 | return -ENXIO; | |
1da177e4 | 2177 | pcm = substream->pcm; |
1a60d4c5 | 2178 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2179 | snd_pcm_release_substream(substream); |
548a648b | 2180 | kfree(pcm_file); |
1a60d4c5 | 2181 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2182 | wake_up(&pcm->open_wait); |
2183 | module_put(pcm->card->module); | |
2184 | snd_card_file_remove(pcm->card, file); | |
2185 | return 0; | |
2186 | } | |
2187 | ||
877211f5 TI |
2188 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2189 | snd_pcm_uframes_t frames) | |
1da177e4 | 2190 | { |
877211f5 | 2191 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2192 | snd_pcm_sframes_t appl_ptr; |
2193 | snd_pcm_sframes_t ret; | |
2194 | snd_pcm_sframes_t hw_avail; | |
2195 | ||
2196 | if (frames == 0) | |
2197 | return 0; | |
2198 | ||
2199 | snd_pcm_stream_lock_irq(substream); | |
2200 | switch (runtime->status->state) { | |
2201 | case SNDRV_PCM_STATE_PREPARED: | |
2202 | break; | |
2203 | case SNDRV_PCM_STATE_DRAINING: | |
2204 | case SNDRV_PCM_STATE_RUNNING: | |
2205 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2206 | break; | |
2207 | /* Fall through */ | |
2208 | case SNDRV_PCM_STATE_XRUN: | |
2209 | ret = -EPIPE; | |
2210 | goto __end; | |
2211 | default: | |
2212 | ret = -EBADFD; | |
2213 | goto __end; | |
2214 | } | |
2215 | ||
2216 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2217 | if (hw_avail <= 0) { | |
2218 | ret = 0; | |
2219 | goto __end; | |
2220 | } | |
2221 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2222 | frames = hw_avail; | |
1da177e4 LT |
2223 | appl_ptr = runtime->control->appl_ptr - frames; |
2224 | if (appl_ptr < 0) | |
2225 | appl_ptr += runtime->boundary; | |
2226 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2227 | ret = frames; |
2228 | __end: | |
2229 | snd_pcm_stream_unlock_irq(substream); | |
2230 | return ret; | |
2231 | } | |
2232 | ||
877211f5 TI |
2233 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2234 | snd_pcm_uframes_t frames) | |
1da177e4 | 2235 | { |
877211f5 | 2236 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2237 | snd_pcm_sframes_t appl_ptr; |
2238 | snd_pcm_sframes_t ret; | |
2239 | snd_pcm_sframes_t hw_avail; | |
2240 | ||
2241 | if (frames == 0) | |
2242 | return 0; | |
2243 | ||
2244 | snd_pcm_stream_lock_irq(substream); | |
2245 | switch (runtime->status->state) { | |
2246 | case SNDRV_PCM_STATE_PREPARED: | |
2247 | case SNDRV_PCM_STATE_DRAINING: | |
2248 | break; | |
2249 | case SNDRV_PCM_STATE_RUNNING: | |
2250 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2251 | break; | |
2252 | /* Fall through */ | |
2253 | case SNDRV_PCM_STATE_XRUN: | |
2254 | ret = -EPIPE; | |
2255 | goto __end; | |
2256 | default: | |
2257 | ret = -EBADFD; | |
2258 | goto __end; | |
2259 | } | |
2260 | ||
2261 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2262 | if (hw_avail <= 0) { | |
2263 | ret = 0; | |
2264 | goto __end; | |
2265 | } | |
2266 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2267 | frames = hw_avail; | |
1da177e4 LT |
2268 | appl_ptr = runtime->control->appl_ptr - frames; |
2269 | if (appl_ptr < 0) | |
2270 | appl_ptr += runtime->boundary; | |
2271 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2272 | ret = frames; |
2273 | __end: | |
2274 | snd_pcm_stream_unlock_irq(substream); | |
2275 | return ret; | |
2276 | } | |
2277 | ||
877211f5 TI |
2278 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2279 | snd_pcm_uframes_t frames) | |
1da177e4 | 2280 | { |
877211f5 | 2281 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2282 | snd_pcm_sframes_t appl_ptr; |
2283 | snd_pcm_sframes_t ret; | |
2284 | snd_pcm_sframes_t avail; | |
2285 | ||
2286 | if (frames == 0) | |
2287 | return 0; | |
2288 | ||
2289 | snd_pcm_stream_lock_irq(substream); | |
2290 | switch (runtime->status->state) { | |
2291 | case SNDRV_PCM_STATE_PREPARED: | |
2292 | case SNDRV_PCM_STATE_PAUSED: | |
2293 | break; | |
2294 | case SNDRV_PCM_STATE_DRAINING: | |
2295 | case SNDRV_PCM_STATE_RUNNING: | |
2296 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2297 | break; | |
2298 | /* Fall through */ | |
2299 | case SNDRV_PCM_STATE_XRUN: | |
2300 | ret = -EPIPE; | |
2301 | goto __end; | |
2302 | default: | |
2303 | ret = -EBADFD; | |
2304 | goto __end; | |
2305 | } | |
2306 | ||
2307 | avail = snd_pcm_playback_avail(runtime); | |
2308 | if (avail <= 0) { | |
2309 | ret = 0; | |
2310 | goto __end; | |
2311 | } | |
2312 | if (frames > (snd_pcm_uframes_t)avail) | |
2313 | frames = avail; | |
1da177e4 LT |
2314 | appl_ptr = runtime->control->appl_ptr + frames; |
2315 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2316 | appl_ptr -= runtime->boundary; | |
2317 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2318 | ret = frames; |
2319 | __end: | |
2320 | snd_pcm_stream_unlock_irq(substream); | |
2321 | return ret; | |
2322 | } | |
2323 | ||
877211f5 TI |
2324 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2325 | snd_pcm_uframes_t frames) | |
1da177e4 | 2326 | { |
877211f5 | 2327 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2328 | snd_pcm_sframes_t appl_ptr; |
2329 | snd_pcm_sframes_t ret; | |
2330 | snd_pcm_sframes_t avail; | |
2331 | ||
2332 | if (frames == 0) | |
2333 | return 0; | |
2334 | ||
2335 | snd_pcm_stream_lock_irq(substream); | |
2336 | switch (runtime->status->state) { | |
2337 | case SNDRV_PCM_STATE_PREPARED: | |
2338 | case SNDRV_PCM_STATE_DRAINING: | |
2339 | case SNDRV_PCM_STATE_PAUSED: | |
2340 | break; | |
2341 | case SNDRV_PCM_STATE_RUNNING: | |
2342 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2343 | break; | |
2344 | /* Fall through */ | |
2345 | case SNDRV_PCM_STATE_XRUN: | |
2346 | ret = -EPIPE; | |
2347 | goto __end; | |
2348 | default: | |
2349 | ret = -EBADFD; | |
2350 | goto __end; | |
2351 | } | |
2352 | ||
2353 | avail = snd_pcm_capture_avail(runtime); | |
2354 | if (avail <= 0) { | |
2355 | ret = 0; | |
2356 | goto __end; | |
2357 | } | |
2358 | if (frames > (snd_pcm_uframes_t)avail) | |
2359 | frames = avail; | |
1da177e4 LT |
2360 | appl_ptr = runtime->control->appl_ptr + frames; |
2361 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2362 | appl_ptr -= runtime->boundary; | |
2363 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2364 | ret = frames; |
2365 | __end: | |
2366 | snd_pcm_stream_unlock_irq(substream); | |
2367 | return ret; | |
2368 | } | |
2369 | ||
877211f5 | 2370 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2371 | { |
877211f5 | 2372 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2373 | int err; |
2374 | ||
2375 | snd_pcm_stream_lock_irq(substream); | |
2376 | switch (runtime->status->state) { | |
2377 | case SNDRV_PCM_STATE_DRAINING: | |
2378 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2379 | goto __badfd; | |
2380 | case SNDRV_PCM_STATE_RUNNING: | |
2381 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2382 | break; | |
2383 | /* Fall through */ | |
2384 | case SNDRV_PCM_STATE_PREPARED: | |
2385 | case SNDRV_PCM_STATE_SUSPENDED: | |
2386 | err = 0; | |
2387 | break; | |
2388 | case SNDRV_PCM_STATE_XRUN: | |
2389 | err = -EPIPE; | |
2390 | break; | |
2391 | default: | |
2392 | __badfd: | |
2393 | err = -EBADFD; | |
2394 | break; | |
2395 | } | |
2396 | snd_pcm_stream_unlock_irq(substream); | |
2397 | return err; | |
2398 | } | |
2399 | ||
877211f5 TI |
2400 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2401 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2402 | { |
877211f5 | 2403 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2404 | int err; |
2405 | snd_pcm_sframes_t n = 0; | |
2406 | ||
2407 | snd_pcm_stream_lock_irq(substream); | |
2408 | switch (runtime->status->state) { | |
2409 | case SNDRV_PCM_STATE_DRAINING: | |
2410 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2411 | goto __badfd; | |
2412 | case SNDRV_PCM_STATE_RUNNING: | |
2413 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2414 | break; | |
2415 | /* Fall through */ | |
2416 | case SNDRV_PCM_STATE_PREPARED: | |
2417 | case SNDRV_PCM_STATE_SUSPENDED: | |
2418 | err = 0; | |
2419 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2420 | n = snd_pcm_playback_hw_avail(runtime); | |
2421 | else | |
2422 | n = snd_pcm_capture_avail(runtime); | |
4bbe1ddf | 2423 | n += runtime->delay; |
1da177e4 LT |
2424 | break; |
2425 | case SNDRV_PCM_STATE_XRUN: | |
2426 | err = -EPIPE; | |
2427 | break; | |
2428 | default: | |
2429 | __badfd: | |
2430 | err = -EBADFD; | |
2431 | break; | |
2432 | } | |
2433 | snd_pcm_stream_unlock_irq(substream); | |
2434 | if (!err) | |
2435 | if (put_user(n, res)) | |
2436 | err = -EFAULT; | |
2437 | return err; | |
2438 | } | |
2439 | ||
877211f5 TI |
2440 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2441 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2442 | { |
877211f5 TI |
2443 | struct snd_pcm_runtime *runtime = substream->runtime; |
2444 | struct snd_pcm_sync_ptr sync_ptr; | |
2445 | volatile struct snd_pcm_mmap_status *status; | |
2446 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2447 | int err; |
2448 | ||
2449 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2450 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2451 | return -EFAULT; | |
877211f5 | 2452 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2453 | return -EFAULT; |
2454 | status = runtime->status; | |
2455 | control = runtime->control; | |
2456 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2457 | err = snd_pcm_hwsync(substream); | |
2458 | if (err < 0) | |
2459 | return err; | |
2460 | } | |
2461 | snd_pcm_stream_lock_irq(substream); | |
2462 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2463 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2464 | else | |
2465 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2466 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2467 | control->avail_min = sync_ptr.c.control.avail_min; | |
2468 | else | |
2469 | sync_ptr.c.control.avail_min = control->avail_min; | |
2470 | sync_ptr.s.status.state = status->state; | |
2471 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2472 | sync_ptr.s.status.tstamp = status->tstamp; | |
2473 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2474 | snd_pcm_stream_unlock_irq(substream); | |
2475 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2476 | return -EFAULT; | |
2477 | return 0; | |
2478 | } | |
b751eef1 JK |
2479 | |
2480 | static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg) | |
2481 | { | |
2482 | struct snd_pcm_runtime *runtime = substream->runtime; | |
2483 | int arg; | |
2484 | ||
2485 | if (get_user(arg, _arg)) | |
2486 | return -EFAULT; | |
2487 | if (arg < 0 || arg > SNDRV_PCM_TSTAMP_TYPE_LAST) | |
2488 | return -EINVAL; | |
2489 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY; | |
2490 | if (arg == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC) | |
2491 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC; | |
2492 | return 0; | |
2493 | } | |
1da177e4 | 2494 | |
0df63e44 TI |
2495 | static int snd_pcm_common_ioctl1(struct file *file, |
2496 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2497 | unsigned int cmd, void __user *arg) |
2498 | { | |
1da177e4 LT |
2499 | switch (cmd) { |
2500 | case SNDRV_PCM_IOCTL_PVERSION: | |
2501 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2502 | case SNDRV_PCM_IOCTL_INFO: | |
2503 | return snd_pcm_info_user(substream, arg); | |
28e9e473 JK |
2504 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
2505 | return 0; | |
b751eef1 JK |
2506 | case SNDRV_PCM_IOCTL_TTSTAMP: |
2507 | return snd_pcm_tstamp(substream, arg); | |
1da177e4 LT |
2508 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2509 | return snd_pcm_hw_refine_user(substream, arg); | |
2510 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2511 | return snd_pcm_hw_params_user(substream, arg); | |
2512 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2513 | return snd_pcm_hw_free(substream); | |
2514 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2515 | return snd_pcm_sw_params_user(substream, arg); | |
2516 | case SNDRV_PCM_IOCTL_STATUS: | |
2517 | return snd_pcm_status_user(substream, arg); | |
2518 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2519 | return snd_pcm_channel_info_user(substream, arg); | |
2520 | case SNDRV_PCM_IOCTL_PREPARE: | |
0df63e44 | 2521 | return snd_pcm_prepare(substream, file); |
1da177e4 LT |
2522 | case SNDRV_PCM_IOCTL_RESET: |
2523 | return snd_pcm_reset(substream); | |
2524 | case SNDRV_PCM_IOCTL_START: | |
2525 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2526 | case SNDRV_PCM_IOCTL_LINK: | |
2527 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2528 | case SNDRV_PCM_IOCTL_UNLINK: | |
2529 | return snd_pcm_unlink(substream); | |
2530 | case SNDRV_PCM_IOCTL_RESUME: | |
2531 | return snd_pcm_resume(substream); | |
2532 | case SNDRV_PCM_IOCTL_XRUN: | |
2533 | return snd_pcm_xrun(substream); | |
2534 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2535 | return snd_pcm_hwsync(substream); | |
2536 | case SNDRV_PCM_IOCTL_DELAY: | |
2537 | return snd_pcm_delay(substream, arg); | |
2538 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2539 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2540 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2541 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2542 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2543 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2544 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2545 | #endif |
1da177e4 LT |
2546 | case SNDRV_PCM_IOCTL_DRAIN: |
2547 | return snd_pcm_drain(substream); | |
2548 | case SNDRV_PCM_IOCTL_DROP: | |
2549 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2550 | case SNDRV_PCM_IOCTL_PAUSE: |
2551 | { | |
2552 | int res; | |
2553 | snd_pcm_stream_lock_irq(substream); | |
2554 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2555 | snd_pcm_stream_unlock_irq(substream); | |
2556 | return res; | |
2557 | } | |
1da177e4 LT |
2558 | } |
2559 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2560 | return -ENOTTY; | |
2561 | } | |
2562 | ||
0df63e44 TI |
2563 | static int snd_pcm_playback_ioctl1(struct file *file, |
2564 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2565 | unsigned int cmd, void __user *arg) |
2566 | { | |
7eaa943c TI |
2567 | if (snd_BUG_ON(!substream)) |
2568 | return -ENXIO; | |
2569 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
2570 | return -EINVAL; | |
1da177e4 LT |
2571 | switch (cmd) { |
2572 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2573 | { | |
877211f5 TI |
2574 | struct snd_xferi xferi; |
2575 | struct snd_xferi __user *_xferi = arg; | |
2576 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2577 | snd_pcm_sframes_t result; |
2578 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2579 | return -EBADFD; | |
2580 | if (put_user(0, &_xferi->result)) | |
2581 | return -EFAULT; | |
2582 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2583 | return -EFAULT; | |
2584 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2585 | __put_user(result, &_xferi->result); | |
2586 | return result < 0 ? result : 0; | |
2587 | } | |
2588 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2589 | { | |
877211f5 TI |
2590 | struct snd_xfern xfern; |
2591 | struct snd_xfern __user *_xfern = arg; | |
2592 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2593 | void __user **bufs; |
2594 | snd_pcm_sframes_t result; | |
2595 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2596 | return -EBADFD; | |
2597 | if (runtime->channels > 128) | |
2598 | return -EINVAL; | |
2599 | if (put_user(0, &_xfern->result)) | |
2600 | return -EFAULT; | |
2601 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2602 | return -EFAULT; | |
ef44a1ec LZ |
2603 | |
2604 | bufs = memdup_user(xfern.bufs, | |
2605 | sizeof(void *) * runtime->channels); | |
2606 | if (IS_ERR(bufs)) | |
2607 | return PTR_ERR(bufs); | |
1da177e4 LT |
2608 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); |
2609 | kfree(bufs); | |
2610 | __put_user(result, &_xfern->result); | |
2611 | return result < 0 ? result : 0; | |
2612 | } | |
2613 | case SNDRV_PCM_IOCTL_REWIND: | |
2614 | { | |
2615 | snd_pcm_uframes_t frames; | |
2616 | snd_pcm_uframes_t __user *_frames = arg; | |
2617 | snd_pcm_sframes_t result; | |
2618 | if (get_user(frames, _frames)) | |
2619 | return -EFAULT; | |
2620 | if (put_user(0, _frames)) | |
2621 | return -EFAULT; | |
2622 | result = snd_pcm_playback_rewind(substream, frames); | |
2623 | __put_user(result, _frames); | |
2624 | return result < 0 ? result : 0; | |
2625 | } | |
2626 | case SNDRV_PCM_IOCTL_FORWARD: | |
2627 | { | |
2628 | snd_pcm_uframes_t frames; | |
2629 | snd_pcm_uframes_t __user *_frames = arg; | |
2630 | snd_pcm_sframes_t result; | |
2631 | if (get_user(frames, _frames)) | |
2632 | return -EFAULT; | |
2633 | if (put_user(0, _frames)) | |
2634 | return -EFAULT; | |
2635 | result = snd_pcm_playback_forward(substream, frames); | |
2636 | __put_user(result, _frames); | |
2637 | return result < 0 ? result : 0; | |
2638 | } | |
1da177e4 | 2639 | } |
0df63e44 | 2640 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2641 | } |
2642 | ||
0df63e44 TI |
2643 | static int snd_pcm_capture_ioctl1(struct file *file, |
2644 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2645 | unsigned int cmd, void __user *arg) |
2646 | { | |
7eaa943c TI |
2647 | if (snd_BUG_ON(!substream)) |
2648 | return -ENXIO; | |
2649 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE)) | |
2650 | return -EINVAL; | |
1da177e4 LT |
2651 | switch (cmd) { |
2652 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2653 | { | |
877211f5 TI |
2654 | struct snd_xferi xferi; |
2655 | struct snd_xferi __user *_xferi = arg; | |
2656 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2657 | snd_pcm_sframes_t result; |
2658 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2659 | return -EBADFD; | |
2660 | if (put_user(0, &_xferi->result)) | |
2661 | return -EFAULT; | |
2662 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2663 | return -EFAULT; | |
2664 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2665 | __put_user(result, &_xferi->result); | |
2666 | return result < 0 ? result : 0; | |
2667 | } | |
2668 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2669 | { | |
877211f5 TI |
2670 | struct snd_xfern xfern; |
2671 | struct snd_xfern __user *_xfern = arg; | |
2672 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2673 | void *bufs; |
2674 | snd_pcm_sframes_t result; | |
2675 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2676 | return -EBADFD; | |
2677 | if (runtime->channels > 128) | |
2678 | return -EINVAL; | |
2679 | if (put_user(0, &_xfern->result)) | |
2680 | return -EFAULT; | |
2681 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2682 | return -EFAULT; | |
ef44a1ec LZ |
2683 | |
2684 | bufs = memdup_user(xfern.bufs, | |
2685 | sizeof(void *) * runtime->channels); | |
2686 | if (IS_ERR(bufs)) | |
2687 | return PTR_ERR(bufs); | |
1da177e4 LT |
2688 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); |
2689 | kfree(bufs); | |
2690 | __put_user(result, &_xfern->result); | |
2691 | return result < 0 ? result : 0; | |
2692 | } | |
2693 | case SNDRV_PCM_IOCTL_REWIND: | |
2694 | { | |
2695 | snd_pcm_uframes_t frames; | |
2696 | snd_pcm_uframes_t __user *_frames = arg; | |
2697 | snd_pcm_sframes_t result; | |
2698 | if (get_user(frames, _frames)) | |
2699 | return -EFAULT; | |
2700 | if (put_user(0, _frames)) | |
2701 | return -EFAULT; | |
2702 | result = snd_pcm_capture_rewind(substream, frames); | |
2703 | __put_user(result, _frames); | |
2704 | return result < 0 ? result : 0; | |
2705 | } | |
2706 | case SNDRV_PCM_IOCTL_FORWARD: | |
2707 | { | |
2708 | snd_pcm_uframes_t frames; | |
2709 | snd_pcm_uframes_t __user *_frames = arg; | |
2710 | snd_pcm_sframes_t result; | |
2711 | if (get_user(frames, _frames)) | |
2712 | return -EFAULT; | |
2713 | if (put_user(0, _frames)) | |
2714 | return -EFAULT; | |
2715 | result = snd_pcm_capture_forward(substream, frames); | |
2716 | __put_user(result, _frames); | |
2717 | return result < 0 ? result : 0; | |
2718 | } | |
2719 | } | |
0df63e44 | 2720 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2721 | } |
2722 | ||
877211f5 TI |
2723 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2724 | unsigned long arg) | |
1da177e4 | 2725 | { |
877211f5 | 2726 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2727 | |
2728 | pcm_file = file->private_data; | |
2729 | ||
2730 | if (((cmd >> 8) & 0xff) != 'A') | |
2731 | return -ENOTTY; | |
2732 | ||
0df63e44 TI |
2733 | return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd, |
2734 | (void __user *)arg); | |
1da177e4 LT |
2735 | } |
2736 | ||
877211f5 TI |
2737 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2738 | unsigned long arg) | |
1da177e4 | 2739 | { |
877211f5 | 2740 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2741 | |
2742 | pcm_file = file->private_data; | |
2743 | ||
2744 | if (((cmd >> 8) & 0xff) != 'A') | |
2745 | return -ENOTTY; | |
2746 | ||
0df63e44 TI |
2747 | return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd, |
2748 | (void __user *)arg); | |
1da177e4 LT |
2749 | } |
2750 | ||
bf1bbb5a TI |
2751 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2752 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2753 | { |
2754 | mm_segment_t fs; | |
2755 | int result; | |
2756 | ||
2757 | fs = snd_enter_user(); | |
1da177e4 LT |
2758 | switch (substream->stream) { |
2759 | case SNDRV_PCM_STREAM_PLAYBACK: | |
0df63e44 TI |
2760 | result = snd_pcm_playback_ioctl1(NULL, substream, cmd, |
2761 | (void __user *)arg); | |
bf1bbb5a | 2762 | break; |
1da177e4 | 2763 | case SNDRV_PCM_STREAM_CAPTURE: |
0df63e44 TI |
2764 | result = snd_pcm_capture_ioctl1(NULL, substream, cmd, |
2765 | (void __user *)arg); | |
bf1bbb5a | 2766 | break; |
1da177e4 | 2767 | default: |
bf1bbb5a TI |
2768 | result = -EINVAL; |
2769 | break; | |
1da177e4 | 2770 | } |
bf1bbb5a TI |
2771 | snd_leave_user(fs); |
2772 | return result; | |
1da177e4 LT |
2773 | } |
2774 | ||
e88e8ae6 TI |
2775 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2776 | ||
877211f5 TI |
2777 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2778 | loff_t * offset) | |
1da177e4 | 2779 | { |
877211f5 TI |
2780 | struct snd_pcm_file *pcm_file; |
2781 | struct snd_pcm_substream *substream; | |
2782 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2783 | snd_pcm_sframes_t result; |
2784 | ||
2785 | pcm_file = file->private_data; | |
2786 | substream = pcm_file->substream; | |
7eaa943c TI |
2787 | if (PCM_RUNTIME_CHECK(substream)) |
2788 | return -ENXIO; | |
1da177e4 LT |
2789 | runtime = substream->runtime; |
2790 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2791 | return -EBADFD; | |
2792 | if (!frame_aligned(runtime, count)) | |
2793 | return -EINVAL; | |
2794 | count = bytes_to_frames(runtime, count); | |
2795 | result = snd_pcm_lib_read(substream, buf, count); | |
2796 | if (result > 0) | |
2797 | result = frames_to_bytes(runtime, result); | |
2798 | return result; | |
2799 | } | |
2800 | ||
877211f5 TI |
2801 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2802 | size_t count, loff_t * offset) | |
1da177e4 | 2803 | { |
877211f5 TI |
2804 | struct snd_pcm_file *pcm_file; |
2805 | struct snd_pcm_substream *substream; | |
2806 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2807 | snd_pcm_sframes_t result; |
2808 | ||
2809 | pcm_file = file->private_data; | |
2810 | substream = pcm_file->substream; | |
7eaa943c TI |
2811 | if (PCM_RUNTIME_CHECK(substream)) |
2812 | return -ENXIO; | |
1da177e4 | 2813 | runtime = substream->runtime; |
7eaa943c TI |
2814 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2815 | return -EBADFD; | |
2816 | if (!frame_aligned(runtime, count)) | |
2817 | return -EINVAL; | |
1da177e4 LT |
2818 | count = bytes_to_frames(runtime, count); |
2819 | result = snd_pcm_lib_write(substream, buf, count); | |
2820 | if (result > 0) | |
2821 | result = frames_to_bytes(runtime, result); | |
1da177e4 LT |
2822 | return result; |
2823 | } | |
2824 | ||
ee0b3e67 BP |
2825 | static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov, |
2826 | unsigned long nr_segs, loff_t pos) | |
1da177e4 LT |
2827 | |
2828 | { | |
877211f5 TI |
2829 | struct snd_pcm_file *pcm_file; |
2830 | struct snd_pcm_substream *substream; | |
2831 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2832 | snd_pcm_sframes_t result; |
2833 | unsigned long i; | |
2834 | void __user **bufs; | |
2835 | snd_pcm_uframes_t frames; | |
2836 | ||
ee0b3e67 | 2837 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2838 | substream = pcm_file->substream; |
7eaa943c TI |
2839 | if (PCM_RUNTIME_CHECK(substream)) |
2840 | return -ENXIO; | |
1da177e4 LT |
2841 | runtime = substream->runtime; |
2842 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2843 | return -EBADFD; | |
ee0b3e67 | 2844 | if (nr_segs > 1024 || nr_segs != runtime->channels) |
1da177e4 | 2845 | return -EINVAL; |
ee0b3e67 | 2846 | if (!frame_aligned(runtime, iov->iov_len)) |
1da177e4 | 2847 | return -EINVAL; |
ee0b3e67 BP |
2848 | frames = bytes_to_samples(runtime, iov->iov_len); |
2849 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2850 | if (bufs == NULL) |
2851 | return -ENOMEM; | |
ee0b3e67 BP |
2852 | for (i = 0; i < nr_segs; ++i) |
2853 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2854 | result = snd_pcm_lib_readv(substream, bufs, frames); |
2855 | if (result > 0) | |
2856 | result = frames_to_bytes(runtime, result); | |
2857 | kfree(bufs); | |
2858 | return result; | |
2859 | } | |
2860 | ||
ee0b3e67 BP |
2861 | static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov, |
2862 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 2863 | { |
877211f5 TI |
2864 | struct snd_pcm_file *pcm_file; |
2865 | struct snd_pcm_substream *substream; | |
2866 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2867 | snd_pcm_sframes_t result; |
2868 | unsigned long i; | |
2869 | void __user **bufs; | |
2870 | snd_pcm_uframes_t frames; | |
2871 | ||
ee0b3e67 | 2872 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2873 | substream = pcm_file->substream; |
7eaa943c TI |
2874 | if (PCM_RUNTIME_CHECK(substream)) |
2875 | return -ENXIO; | |
1da177e4 | 2876 | runtime = substream->runtime; |
7eaa943c TI |
2877 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2878 | return -EBADFD; | |
ee0b3e67 | 2879 | if (nr_segs > 128 || nr_segs != runtime->channels || |
7eaa943c TI |
2880 | !frame_aligned(runtime, iov->iov_len)) |
2881 | return -EINVAL; | |
ee0b3e67 BP |
2882 | frames = bytes_to_samples(runtime, iov->iov_len); |
2883 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2884 | if (bufs == NULL) |
2885 | return -ENOMEM; | |
ee0b3e67 BP |
2886 | for (i = 0; i < nr_segs; ++i) |
2887 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2888 | result = snd_pcm_lib_writev(substream, bufs, frames); |
2889 | if (result > 0) | |
2890 | result = frames_to_bytes(runtime, result); | |
2891 | kfree(bufs); | |
1da177e4 LT |
2892 | return result; |
2893 | } | |
2894 | ||
2895 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2896 | { | |
877211f5 TI |
2897 | struct snd_pcm_file *pcm_file; |
2898 | struct snd_pcm_substream *substream; | |
2899 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2900 | unsigned int mask; |
2901 | snd_pcm_uframes_t avail; | |
2902 | ||
2903 | pcm_file = file->private_data; | |
2904 | ||
2905 | substream = pcm_file->substream; | |
7eaa943c TI |
2906 | if (PCM_RUNTIME_CHECK(substream)) |
2907 | return -ENXIO; | |
1da177e4 LT |
2908 | runtime = substream->runtime; |
2909 | ||
2910 | poll_wait(file, &runtime->sleep, wait); | |
2911 | ||
2912 | snd_pcm_stream_lock_irq(substream); | |
2913 | avail = snd_pcm_playback_avail(runtime); | |
2914 | switch (runtime->status->state) { | |
2915 | case SNDRV_PCM_STATE_RUNNING: | |
2916 | case SNDRV_PCM_STATE_PREPARED: | |
2917 | case SNDRV_PCM_STATE_PAUSED: | |
2918 | if (avail >= runtime->control->avail_min) { | |
2919 | mask = POLLOUT | POLLWRNORM; | |
2920 | break; | |
2921 | } | |
2922 | /* Fall through */ | |
2923 | case SNDRV_PCM_STATE_DRAINING: | |
2924 | mask = 0; | |
2925 | break; | |
2926 | default: | |
2927 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2928 | break; | |
2929 | } | |
2930 | snd_pcm_stream_unlock_irq(substream); | |
2931 | return mask; | |
2932 | } | |
2933 | ||
2934 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2935 | { | |
877211f5 TI |
2936 | struct snd_pcm_file *pcm_file; |
2937 | struct snd_pcm_substream *substream; | |
2938 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2939 | unsigned int mask; |
2940 | snd_pcm_uframes_t avail; | |
2941 | ||
2942 | pcm_file = file->private_data; | |
2943 | ||
2944 | substream = pcm_file->substream; | |
7eaa943c TI |
2945 | if (PCM_RUNTIME_CHECK(substream)) |
2946 | return -ENXIO; | |
1da177e4 LT |
2947 | runtime = substream->runtime; |
2948 | ||
2949 | poll_wait(file, &runtime->sleep, wait); | |
2950 | ||
2951 | snd_pcm_stream_lock_irq(substream); | |
2952 | avail = snd_pcm_capture_avail(runtime); | |
2953 | switch (runtime->status->state) { | |
2954 | case SNDRV_PCM_STATE_RUNNING: | |
2955 | case SNDRV_PCM_STATE_PREPARED: | |
2956 | case SNDRV_PCM_STATE_PAUSED: | |
2957 | if (avail >= runtime->control->avail_min) { | |
2958 | mask = POLLIN | POLLRDNORM; | |
2959 | break; | |
2960 | } | |
2961 | mask = 0; | |
2962 | break; | |
2963 | case SNDRV_PCM_STATE_DRAINING: | |
2964 | if (avail > 0) { | |
2965 | mask = POLLIN | POLLRDNORM; | |
2966 | break; | |
2967 | } | |
2968 | /* Fall through */ | |
2969 | default: | |
2970 | mask = POLLIN | POLLRDNORM | POLLERR; | |
2971 | break; | |
2972 | } | |
2973 | snd_pcm_stream_unlock_irq(substream); | |
2974 | return mask; | |
2975 | } | |
2976 | ||
2977 | /* | |
2978 | * mmap support | |
2979 | */ | |
2980 | ||
2981 | /* | |
2982 | * Only on coherent architectures, we can mmap the status and the control records | |
2983 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
2984 | */ | |
2985 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
2986 | /* | |
2987 | * mmap status record | |
2988 | */ | |
3ad5afcd NP |
2989 | static int snd_pcm_mmap_status_fault(struct vm_area_struct *area, |
2990 | struct vm_fault *vmf) | |
1da177e4 | 2991 | { |
877211f5 TI |
2992 | struct snd_pcm_substream *substream = area->vm_private_data; |
2993 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2994 | |
2995 | if (substream == NULL) | |
3ad5afcd | 2996 | return VM_FAULT_SIGBUS; |
1da177e4 | 2997 | runtime = substream->runtime; |
3ad5afcd NP |
2998 | vmf->page = virt_to_page(runtime->status); |
2999 | get_page(vmf->page); | |
3000 | return 0; | |
1da177e4 LT |
3001 | } |
3002 | ||
3003 | static struct vm_operations_struct snd_pcm_vm_ops_status = | |
3004 | { | |
3ad5afcd | 3005 | .fault = snd_pcm_mmap_status_fault, |
1da177e4 LT |
3006 | }; |
3007 | ||
877211f5 | 3008 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3009 | struct vm_area_struct *area) |
3010 | { | |
877211f5 | 3011 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3012 | long size; |
3013 | if (!(area->vm_flags & VM_READ)) | |
3014 | return -EINVAL; | |
3015 | runtime = substream->runtime; | |
1da177e4 | 3016 | size = area->vm_end - area->vm_start; |
877211f5 | 3017 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3018 | return -EINVAL; |
3019 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3020 | area->vm_private_data = substream; | |
3021 | area->vm_flags |= VM_RESERVED; | |
3022 | return 0; | |
3023 | } | |
3024 | ||
3025 | /* | |
3026 | * mmap control record | |
3027 | */ | |
3ad5afcd NP |
3028 | static int snd_pcm_mmap_control_fault(struct vm_area_struct *area, |
3029 | struct vm_fault *vmf) | |
1da177e4 | 3030 | { |
877211f5 TI |
3031 | struct snd_pcm_substream *substream = area->vm_private_data; |
3032 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3033 | |
3034 | if (substream == NULL) | |
3ad5afcd | 3035 | return VM_FAULT_SIGBUS; |
1da177e4 | 3036 | runtime = substream->runtime; |
3ad5afcd NP |
3037 | vmf->page = virt_to_page(runtime->control); |
3038 | get_page(vmf->page); | |
3039 | return 0; | |
1da177e4 LT |
3040 | } |
3041 | ||
3042 | static struct vm_operations_struct snd_pcm_vm_ops_control = | |
3043 | { | |
3ad5afcd | 3044 | .fault = snd_pcm_mmap_control_fault, |
1da177e4 LT |
3045 | }; |
3046 | ||
877211f5 | 3047 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3048 | struct vm_area_struct *area) |
3049 | { | |
877211f5 | 3050 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3051 | long size; |
3052 | if (!(area->vm_flags & VM_READ)) | |
3053 | return -EINVAL; | |
3054 | runtime = substream->runtime; | |
1da177e4 | 3055 | size = area->vm_end - area->vm_start; |
877211f5 | 3056 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3057 | return -EINVAL; |
3058 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3059 | area->vm_private_data = substream; | |
3060 | area->vm_flags |= VM_RESERVED; | |
3061 | return 0; | |
3062 | } | |
3063 | #else /* ! coherent mmap */ | |
3064 | /* | |
3065 | * don't support mmap for status and control records. | |
3066 | */ | |
877211f5 | 3067 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3068 | struct vm_area_struct *area) |
3069 | { | |
3070 | return -ENXIO; | |
3071 | } | |
877211f5 | 3072 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3073 | struct vm_area_struct *area) |
3074 | { | |
3075 | return -ENXIO; | |
3076 | } | |
3077 | #endif /* coherent mmap */ | |
3078 | ||
3079 | /* | |
3ad5afcd | 3080 | * fault callback for mmapping a RAM page |
1da177e4 | 3081 | */ |
3ad5afcd NP |
3082 | static int snd_pcm_mmap_data_fault(struct vm_area_struct *area, |
3083 | struct vm_fault *vmf) | |
1da177e4 | 3084 | { |
877211f5 TI |
3085 | struct snd_pcm_substream *substream = area->vm_private_data; |
3086 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3087 | unsigned long offset; |
3088 | struct page * page; | |
3089 | void *vaddr; | |
3090 | size_t dma_bytes; | |
3091 | ||
3092 | if (substream == NULL) | |
3ad5afcd | 3093 | return VM_FAULT_SIGBUS; |
1da177e4 | 3094 | runtime = substream->runtime; |
3ad5afcd | 3095 | offset = vmf->pgoff << PAGE_SHIFT; |
1da177e4 LT |
3096 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
3097 | if (offset > dma_bytes - PAGE_SIZE) | |
3ad5afcd | 3098 | return VM_FAULT_SIGBUS; |
1da177e4 LT |
3099 | if (substream->ops->page) { |
3100 | page = substream->ops->page(substream, offset); | |
3ad5afcd NP |
3101 | if (!page) |
3102 | return VM_FAULT_SIGBUS; | |
1da177e4 LT |
3103 | } else { |
3104 | vaddr = runtime->dma_area + offset; | |
3105 | page = virt_to_page(vaddr); | |
3106 | } | |
b5810039 | 3107 | get_page(page); |
3ad5afcd NP |
3108 | vmf->page = page; |
3109 | return 0; | |
1da177e4 LT |
3110 | } |
3111 | ||
3112 | static struct vm_operations_struct snd_pcm_vm_ops_data = | |
3113 | { | |
3114 | .open = snd_pcm_mmap_data_open, | |
3115 | .close = snd_pcm_mmap_data_close, | |
3ad5afcd | 3116 | .fault = snd_pcm_mmap_data_fault, |
1da177e4 LT |
3117 | }; |
3118 | ||
3119 | /* | |
3120 | * mmap the DMA buffer on RAM | |
3121 | */ | |
877211f5 TI |
3122 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3123 | struct vm_area_struct *area) | |
1da177e4 LT |
3124 | { |
3125 | area->vm_ops = &snd_pcm_vm_ops_data; | |
3126 | area->vm_private_data = substream; | |
3127 | area->vm_flags |= VM_RESERVED; | |
9c323fcb | 3128 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3129 | return 0; |
3130 | } | |
3131 | ||
3132 | /* | |
3133 | * mmap the DMA buffer on I/O memory area | |
3134 | */ | |
3135 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
3136 | static struct vm_operations_struct snd_pcm_vm_ops_data_mmio = | |
3137 | { | |
3138 | .open = snd_pcm_mmap_data_open, | |
3139 | .close = snd_pcm_mmap_data_close, | |
3140 | }; | |
3141 | ||
877211f5 TI |
3142 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3143 | struct vm_area_struct *area) | |
1da177e4 LT |
3144 | { |
3145 | long size; | |
3146 | unsigned long offset; | |
3147 | ||
3148 | #ifdef pgprot_noncached | |
3149 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3150 | #endif | |
3151 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; | |
3152 | area->vm_private_data = substream; | |
3153 | area->vm_flags |= VM_IO; | |
3154 | size = area->vm_end - area->vm_start; | |
3155 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3156 | if (io_remap_pfn_range(area, area->vm_start, | |
3157 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3158 | size, area->vm_page_prot)) | |
3159 | return -EAGAIN; | |
9c323fcb | 3160 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
3161 | return 0; |
3162 | } | |
e88e8ae6 TI |
3163 | |
3164 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3165 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3166 | ||
3167 | /* | |
3168 | * mmap DMA buffer | |
3169 | */ | |
877211f5 | 3170 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3171 | struct vm_area_struct *area) |
3172 | { | |
877211f5 | 3173 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3174 | long size; |
3175 | unsigned long offset; | |
3176 | size_t dma_bytes; | |
3177 | ||
3178 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3179 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3180 | return -EINVAL; | |
3181 | } else { | |
3182 | if (!(area->vm_flags & VM_READ)) | |
3183 | return -EINVAL; | |
3184 | } | |
3185 | runtime = substream->runtime; | |
1da177e4 LT |
3186 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
3187 | return -EBADFD; | |
3188 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3189 | return -ENXIO; | |
3190 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3191 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3192 | return -EINVAL; | |
3193 | size = area->vm_end - area->vm_start; | |
3194 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3195 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3196 | if ((size_t)size > dma_bytes) | |
3197 | return -EINVAL; | |
3198 | if (offset > dma_bytes - size) | |
3199 | return -EINVAL; | |
3200 | ||
3201 | if (substream->ops->mmap) | |
3202 | return substream->ops->mmap(substream, area); | |
3203 | else | |
3204 | return snd_pcm_default_mmap(substream, area); | |
3205 | } | |
3206 | ||
e88e8ae6 TI |
3207 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3208 | ||
1da177e4 LT |
3209 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3210 | { | |
877211f5 TI |
3211 | struct snd_pcm_file * pcm_file; |
3212 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3213 | unsigned long offset; |
3214 | ||
3215 | pcm_file = file->private_data; | |
3216 | substream = pcm_file->substream; | |
7eaa943c TI |
3217 | if (PCM_RUNTIME_CHECK(substream)) |
3218 | return -ENXIO; | |
1da177e4 LT |
3219 | |
3220 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3221 | switch (offset) { | |
3222 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
548a648b | 3223 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3224 | return -ENXIO; |
3225 | return snd_pcm_mmap_status(substream, file, area); | |
3226 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
548a648b | 3227 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3228 | return -ENXIO; |
3229 | return snd_pcm_mmap_control(substream, file, area); | |
3230 | default: | |
3231 | return snd_pcm_mmap_data(substream, file, area); | |
3232 | } | |
3233 | return 0; | |
3234 | } | |
3235 | ||
3236 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3237 | { | |
877211f5 TI |
3238 | struct snd_pcm_file * pcm_file; |
3239 | struct snd_pcm_substream *substream; | |
3240 | struct snd_pcm_runtime *runtime; | |
2db9f0a3 | 3241 | int err = -ENXIO; |
1da177e4 | 3242 | |
2db9f0a3 | 3243 | lock_kernel(); |
1da177e4 LT |
3244 | pcm_file = file->private_data; |
3245 | substream = pcm_file->substream; | |
7eaa943c TI |
3246 | if (PCM_RUNTIME_CHECK(substream)) |
3247 | goto out; | |
1da177e4 | 3248 | runtime = substream->runtime; |
1da177e4 | 3249 | err = fasync_helper(fd, file, on, &runtime->fasync); |
685d87f7 | 3250 | out: |
2db9f0a3 | 3251 | unlock_kernel(); |
60aa4924 | 3252 | return err; |
1da177e4 LT |
3253 | } |
3254 | ||
3255 | /* | |
3256 | * ioctl32 compat | |
3257 | */ | |
3258 | #ifdef CONFIG_COMPAT | |
3259 | #include "pcm_compat.c" | |
3260 | #else | |
3261 | #define snd_pcm_ioctl_compat NULL | |
3262 | #endif | |
3263 | ||
3264 | /* | |
3265 | * To be removed helpers to keep binary compatibility | |
3266 | */ | |
3267 | ||
59d48582 | 3268 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3269 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3270 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3271 | ||
877211f5 TI |
3272 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3273 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3274 | { |
3275 | unsigned int i; | |
3276 | ||
3277 | memset(params, 0, sizeof(*params)); | |
3278 | params->flags = oparams->flags; | |
3279 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3280 | params->masks[i].bits[0] = oparams->masks[i]; | |
3281 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3282 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3283 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3284 | params->info = oparams->info; | |
3285 | params->msbits = oparams->msbits; | |
3286 | params->rate_num = oparams->rate_num; | |
3287 | params->rate_den = oparams->rate_den; | |
3288 | params->fifo_size = oparams->fifo_size; | |
3289 | } | |
3290 | ||
877211f5 TI |
3291 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3292 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3293 | { |
3294 | unsigned int i; | |
3295 | ||
3296 | memset(oparams, 0, sizeof(*oparams)); | |
3297 | oparams->flags = params->flags; | |
3298 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3299 | oparams->masks[i] = params->masks[i].bits[0]; | |
3300 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3301 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3302 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3303 | oparams->info = params->info; | |
3304 | oparams->msbits = params->msbits; | |
3305 | oparams->rate_num = params->rate_num; | |
3306 | oparams->rate_den = params->rate_den; | |
3307 | oparams->fifo_size = params->fifo_size; | |
3308 | } | |
3309 | ||
877211f5 TI |
3310 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3311 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3312 | { |
877211f5 TI |
3313 | struct snd_pcm_hw_params *params; |
3314 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3315 | int err; |
3316 | ||
3317 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3318 | if (!params) |
3319 | return -ENOMEM; | |
1da177e4 | 3320 | |
ef44a1ec LZ |
3321 | oparams = memdup_user(_oparams, sizeof(*oparams)); |
3322 | if (IS_ERR(oparams)) { | |
3323 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3324 | goto out; |
3325 | } | |
3326 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3327 | err = snd_pcm_hw_refine(substream, params); | |
3328 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3329 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3330 | if (!err) | |
3331 | err = -EFAULT; | |
3332 | } | |
ef44a1ec LZ |
3333 | |
3334 | kfree(oparams); | |
1da177e4 LT |
3335 | out: |
3336 | kfree(params); | |
1da177e4 LT |
3337 | return err; |
3338 | } | |
3339 | ||
877211f5 TI |
3340 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3341 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3342 | { |
877211f5 TI |
3343 | struct snd_pcm_hw_params *params; |
3344 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3345 | int err; |
3346 | ||
3347 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3348 | if (!params) |
3349 | return -ENOMEM; | |
3350 | ||
3351 | oparams = memdup_user(_oparams, sizeof(*oparams)); | |
3352 | if (IS_ERR(oparams)) { | |
3353 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3354 | goto out; |
3355 | } | |
3356 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3357 | err = snd_pcm_hw_params(substream, params); | |
3358 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3359 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3360 | if (!err) | |
3361 | err = -EFAULT; | |
3362 | } | |
ef44a1ec LZ |
3363 | |
3364 | kfree(oparams); | |
1da177e4 LT |
3365 | out: |
3366 | kfree(params); | |
1da177e4 LT |
3367 | return err; |
3368 | } | |
59d48582 | 3369 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 | 3370 | |
7003609b CC |
3371 | #ifndef CONFIG_MMU |
3372 | unsigned long dummy_get_unmapped_area(struct file *file, unsigned long addr, | |
3373 | unsigned long len, unsigned long pgoff, | |
3374 | unsigned long flags) | |
3375 | { | |
3376 | return 0; | |
3377 | } | |
3378 | #else | |
3379 | # define dummy_get_unmapped_area NULL | |
3380 | #endif | |
3381 | ||
1da177e4 LT |
3382 | /* |
3383 | * Register section | |
3384 | */ | |
3385 | ||
9c2e08c5 | 3386 | const struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3387 | { |
2af677fc CL |
3388 | .owner = THIS_MODULE, |
3389 | .write = snd_pcm_write, | |
ee0b3e67 | 3390 | .aio_write = snd_pcm_aio_write, |
f87135f5 | 3391 | .open = snd_pcm_playback_open, |
2af677fc CL |
3392 | .release = snd_pcm_release, |
3393 | .poll = snd_pcm_playback_poll, | |
3394 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3395 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3396 | .mmap = snd_pcm_mmap, | |
3397 | .fasync = snd_pcm_fasync, | |
7003609b | 3398 | .get_unmapped_area = dummy_get_unmapped_area, |
1da177e4 LT |
3399 | }, |
3400 | { | |
2af677fc CL |
3401 | .owner = THIS_MODULE, |
3402 | .read = snd_pcm_read, | |
ee0b3e67 | 3403 | .aio_read = snd_pcm_aio_read, |
f87135f5 | 3404 | .open = snd_pcm_capture_open, |
2af677fc CL |
3405 | .release = snd_pcm_release, |
3406 | .poll = snd_pcm_capture_poll, | |
3407 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3408 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3409 | .mmap = snd_pcm_mmap, | |
3410 | .fasync = snd_pcm_fasync, | |
7003609b | 3411 | .get_unmapped_area = dummy_get_unmapped_area, |
1da177e4 LT |
3412 | } |
3413 | }; |