Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Digital Audio (PCM) abstract layer | |
c1017a4c | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
4 | * |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
1da177e4 | 22 | #include <linux/mm.h> |
1da177e4 LT |
23 | #include <linux/file.h> |
24 | #include <linux/slab.h> | |
2db9f0a3 | 25 | #include <linux/smp_lock.h> |
1da177e4 | 26 | #include <linux/time.h> |
f011e2e2 | 27 | #include <linux/pm_qos_params.h> |
1da177e4 | 28 | #include <linux/uio.h> |
657b1989 | 29 | #include <linux/dma-mapping.h> |
1da177e4 LT |
30 | #include <sound/core.h> |
31 | #include <sound/control.h> | |
32 | #include <sound/info.h> | |
33 | #include <sound/pcm.h> | |
34 | #include <sound/pcm_params.h> | |
35 | #include <sound/timer.h> | |
36 | #include <sound/minors.h> | |
37 | #include <asm/io.h> | |
9fe17b5d TI |
38 | #if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT) |
39 | #include <dma-coherence.h> | |
40 | #endif | |
1da177e4 LT |
41 | |
42 | /* | |
43 | * Compatibility | |
44 | */ | |
45 | ||
877211f5 | 46 | struct snd_pcm_hw_params_old { |
1da177e4 LT |
47 | unsigned int flags; |
48 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - | |
49 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; | |
877211f5 | 50 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
1da177e4 LT |
51 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS + 1]; |
52 | unsigned int rmask; | |
53 | unsigned int cmask; | |
54 | unsigned int info; | |
55 | unsigned int msbits; | |
56 | unsigned int rate_num; | |
57 | unsigned int rate_den; | |
877211f5 | 58 | snd_pcm_uframes_t fifo_size; |
1da177e4 LT |
59 | unsigned char reserved[64]; |
60 | }; | |
61 | ||
59d48582 | 62 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
877211f5 TI |
63 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
64 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) | |
1da177e4 | 65 | |
877211f5 TI |
66 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
67 | struct snd_pcm_hw_params_old __user * _oparams); | |
68 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, | |
69 | struct snd_pcm_hw_params_old __user * _oparams); | |
59d48582 | 70 | #endif |
f87135f5 | 71 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream); |
1da177e4 LT |
72 | |
73 | /* | |
74 | * | |
75 | */ | |
76 | ||
77 | DEFINE_RWLOCK(snd_pcm_link_rwlock); | |
e88e8ae6 | 78 | EXPORT_SYMBOL(snd_pcm_link_rwlock); |
1da177e4 | 79 | |
e88e8ae6 | 80 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
1da177e4 LT |
81 | |
82 | static inline mm_segment_t snd_enter_user(void) | |
83 | { | |
84 | mm_segment_t fs = get_fs(); | |
85 | set_fs(get_ds()); | |
86 | return fs; | |
87 | } | |
88 | ||
89 | static inline void snd_leave_user(mm_segment_t fs) | |
90 | { | |
91 | set_fs(fs); | |
92 | } | |
93 | ||
94 | ||
95 | ||
877211f5 | 96 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
1da177e4 | 97 | { |
877211f5 TI |
98 | struct snd_pcm_runtime *runtime; |
99 | struct snd_pcm *pcm = substream->pcm; | |
100 | struct snd_pcm_str *pstr = substream->pstr; | |
1da177e4 | 101 | |
1da177e4 LT |
102 | memset(info, 0, sizeof(*info)); |
103 | info->card = pcm->card->number; | |
104 | info->device = pcm->device; | |
105 | info->stream = substream->stream; | |
106 | info->subdevice = substream->number; | |
107 | strlcpy(info->id, pcm->id, sizeof(info->id)); | |
108 | strlcpy(info->name, pcm->name, sizeof(info->name)); | |
109 | info->dev_class = pcm->dev_class; | |
110 | info->dev_subclass = pcm->dev_subclass; | |
111 | info->subdevices_count = pstr->substream_count; | |
112 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; | |
113 | strlcpy(info->subname, substream->name, sizeof(info->subname)); | |
114 | runtime = substream->runtime; | |
115 | /* AB: FIXME!!! This is definitely nonsense */ | |
116 | if (runtime) { | |
117 | info->sync = runtime->sync; | |
118 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); | |
119 | } | |
120 | return 0; | |
121 | } | |
122 | ||
877211f5 TI |
123 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
124 | struct snd_pcm_info __user * _info) | |
1da177e4 | 125 | { |
877211f5 | 126 | struct snd_pcm_info *info; |
1da177e4 LT |
127 | int err; |
128 | ||
129 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
130 | if (! info) | |
131 | return -ENOMEM; | |
132 | err = snd_pcm_info(substream, info); | |
133 | if (err >= 0) { | |
134 | if (copy_to_user(_info, info, sizeof(*info))) | |
135 | err = -EFAULT; | |
136 | } | |
137 | kfree(info); | |
138 | return err; | |
139 | } | |
140 | ||
141 | #undef RULES_DEBUG | |
142 | ||
143 | #ifdef RULES_DEBUG | |
144 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v | |
145 | char *snd_pcm_hw_param_names[] = { | |
146 | HW_PARAM(ACCESS), | |
147 | HW_PARAM(FORMAT), | |
148 | HW_PARAM(SUBFORMAT), | |
149 | HW_PARAM(SAMPLE_BITS), | |
150 | HW_PARAM(FRAME_BITS), | |
151 | HW_PARAM(CHANNELS), | |
152 | HW_PARAM(RATE), | |
153 | HW_PARAM(PERIOD_TIME), | |
154 | HW_PARAM(PERIOD_SIZE), | |
155 | HW_PARAM(PERIOD_BYTES), | |
156 | HW_PARAM(PERIODS), | |
157 | HW_PARAM(BUFFER_TIME), | |
158 | HW_PARAM(BUFFER_SIZE), | |
159 | HW_PARAM(BUFFER_BYTES), | |
160 | HW_PARAM(TICK_TIME), | |
161 | }; | |
162 | #endif | |
163 | ||
877211f5 TI |
164 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
165 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
166 | { |
167 | unsigned int k; | |
877211f5 TI |
168 | struct snd_pcm_hardware *hw; |
169 | struct snd_interval *i = NULL; | |
170 | struct snd_mask *m = NULL; | |
171 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; | |
1da177e4 LT |
172 | unsigned int rstamps[constrs->rules_num]; |
173 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; | |
174 | unsigned int stamp = 2; | |
175 | int changed, again; | |
176 | ||
177 | params->info = 0; | |
178 | params->fifo_size = 0; | |
179 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) | |
180 | params->msbits = 0; | |
181 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { | |
182 | params->rate_num = 0; | |
183 | params->rate_den = 0; | |
184 | } | |
185 | ||
186 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
187 | m = hw_param_mask(params, k); | |
188 | if (snd_mask_empty(m)) | |
189 | return -EINVAL; | |
190 | if (!(params->rmask & (1 << k))) | |
191 | continue; | |
192 | #ifdef RULES_DEBUG | |
006de267 | 193 | printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]); |
1da177e4 LT |
194 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); |
195 | #endif | |
196 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); | |
197 | #ifdef RULES_DEBUG | |
198 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
199 | #endif | |
200 | if (changed) | |
201 | params->cmask |= 1 << k; | |
202 | if (changed < 0) | |
203 | return changed; | |
204 | } | |
205 | ||
206 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
207 | i = hw_param_interval(params, k); | |
208 | if (snd_interval_empty(i)) | |
209 | return -EINVAL; | |
210 | if (!(params->rmask & (1 << k))) | |
211 | continue; | |
212 | #ifdef RULES_DEBUG | |
006de267 | 213 | printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]); |
1da177e4 LT |
214 | if (i->empty) |
215 | printk("empty"); | |
216 | else | |
217 | printk("%c%u %u%c", | |
218 | i->openmin ? '(' : '[', i->min, | |
219 | i->max, i->openmax ? ')' : ']'); | |
220 | printk(" -> "); | |
221 | #endif | |
222 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); | |
223 | #ifdef RULES_DEBUG | |
224 | if (i->empty) | |
225 | printk("empty\n"); | |
226 | else | |
227 | printk("%c%u %u%c\n", | |
228 | i->openmin ? '(' : '[', i->min, | |
229 | i->max, i->openmax ? ')' : ']'); | |
230 | #endif | |
231 | if (changed) | |
232 | params->cmask |= 1 << k; | |
233 | if (changed < 0) | |
234 | return changed; | |
235 | } | |
236 | ||
237 | for (k = 0; k < constrs->rules_num; k++) | |
238 | rstamps[k] = 0; | |
239 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) | |
240 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; | |
241 | do { | |
242 | again = 0; | |
243 | for (k = 0; k < constrs->rules_num; k++) { | |
877211f5 | 244 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
1da177e4 LT |
245 | unsigned int d; |
246 | int doit = 0; | |
247 | if (r->cond && !(r->cond & params->flags)) | |
248 | continue; | |
249 | for (d = 0; r->deps[d] >= 0; d++) { | |
250 | if (vstamps[r->deps[d]] > rstamps[k]) { | |
251 | doit = 1; | |
252 | break; | |
253 | } | |
254 | } | |
255 | if (!doit) | |
256 | continue; | |
257 | #ifdef RULES_DEBUG | |
006de267 | 258 | printk(KERN_DEBUG "Rule %d [%p]: ", k, r->func); |
1da177e4 LT |
259 | if (r->var >= 0) { |
260 | printk("%s = ", snd_pcm_hw_param_names[r->var]); | |
261 | if (hw_is_mask(r->var)) { | |
262 | m = hw_param_mask(params, r->var); | |
263 | printk("%x", *m->bits); | |
264 | } else { | |
265 | i = hw_param_interval(params, r->var); | |
266 | if (i->empty) | |
267 | printk("empty"); | |
268 | else | |
269 | printk("%c%u %u%c", | |
270 | i->openmin ? '(' : '[', i->min, | |
271 | i->max, i->openmax ? ')' : ']'); | |
272 | } | |
273 | } | |
274 | #endif | |
275 | changed = r->func(params, r); | |
276 | #ifdef RULES_DEBUG | |
277 | if (r->var >= 0) { | |
278 | printk(" -> "); | |
279 | if (hw_is_mask(r->var)) | |
280 | printk("%x", *m->bits); | |
281 | else { | |
282 | if (i->empty) | |
283 | printk("empty"); | |
284 | else | |
285 | printk("%c%u %u%c", | |
286 | i->openmin ? '(' : '[', i->min, | |
287 | i->max, i->openmax ? ')' : ']'); | |
288 | } | |
289 | } | |
290 | printk("\n"); | |
291 | #endif | |
292 | rstamps[k] = stamp; | |
293 | if (changed && r->var >= 0) { | |
294 | params->cmask |= (1 << r->var); | |
295 | vstamps[r->var] = stamp; | |
296 | again = 1; | |
297 | } | |
298 | if (changed < 0) | |
299 | return changed; | |
300 | stamp++; | |
301 | } | |
302 | } while (again); | |
303 | if (!params->msbits) { | |
304 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); | |
305 | if (snd_interval_single(i)) | |
306 | params->msbits = snd_interval_value(i); | |
307 | } | |
308 | ||
309 | if (!params->rate_den) { | |
310 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
311 | if (snd_interval_single(i)) { | |
312 | params->rate_num = snd_interval_value(i); | |
313 | params->rate_den = 1; | |
314 | } | |
315 | } | |
316 | ||
317 | hw = &substream->runtime->hw; | |
318 | if (!params->info) | |
8bea869c JK |
319 | params->info = hw->info & ~SNDRV_PCM_INFO_FIFO_IN_FRAMES; |
320 | if (!params->fifo_size) { | |
3be522a9 JK |
321 | m = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
322 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
323 | if (snd_mask_min(m) == snd_mask_max(m) && | |
324 | snd_interval_min(i) == snd_interval_max(i)) { | |
8bea869c JK |
325 | changed = substream->ops->ioctl(substream, |
326 | SNDRV_PCM_IOCTL1_FIFO_SIZE, params); | |
8bd9bca3 | 327 | if (changed < 0) |
8bea869c JK |
328 | return changed; |
329 | } | |
330 | } | |
1da177e4 LT |
331 | params->rmask = 0; |
332 | return 0; | |
333 | } | |
334 | ||
e88e8ae6 TI |
335 | EXPORT_SYMBOL(snd_pcm_hw_refine); |
336 | ||
877211f5 TI |
337 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
338 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 339 | { |
877211f5 | 340 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
341 | int err; |
342 | ||
ef44a1ec LZ |
343 | params = memdup_user(_params, sizeof(*params)); |
344 | if (IS_ERR(params)) | |
345 | return PTR_ERR(params); | |
346 | ||
1da177e4 LT |
347 | err = snd_pcm_hw_refine(substream, params); |
348 | if (copy_to_user(_params, params, sizeof(*params))) { | |
349 | if (!err) | |
350 | err = -EFAULT; | |
351 | } | |
ef44a1ec | 352 | |
1da177e4 LT |
353 | kfree(params); |
354 | return err; | |
355 | } | |
356 | ||
9442e691 TI |
357 | static int period_to_usecs(struct snd_pcm_runtime *runtime) |
358 | { | |
359 | int usecs; | |
360 | ||
361 | if (! runtime->rate) | |
362 | return -1; /* invalid */ | |
363 | ||
364 | /* take 75% of period time as the deadline */ | |
365 | usecs = (750000 / runtime->rate) * runtime->period_size; | |
366 | usecs += ((750000 % runtime->rate) * runtime->period_size) / | |
367 | runtime->rate; | |
368 | ||
369 | return usecs; | |
370 | } | |
371 | ||
877211f5 TI |
372 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
373 | struct snd_pcm_hw_params *params) | |
1da177e4 | 374 | { |
877211f5 | 375 | struct snd_pcm_runtime *runtime; |
9442e691 | 376 | int err, usecs; |
1da177e4 LT |
377 | unsigned int bits; |
378 | snd_pcm_uframes_t frames; | |
379 | ||
7eaa943c TI |
380 | if (PCM_RUNTIME_CHECK(substream)) |
381 | return -ENXIO; | |
1da177e4 | 382 | runtime = substream->runtime; |
1da177e4 LT |
383 | snd_pcm_stream_lock_irq(substream); |
384 | switch (runtime->status->state) { | |
385 | case SNDRV_PCM_STATE_OPEN: | |
386 | case SNDRV_PCM_STATE_SETUP: | |
387 | case SNDRV_PCM_STATE_PREPARED: | |
388 | break; | |
389 | default: | |
390 | snd_pcm_stream_unlock_irq(substream); | |
391 | return -EBADFD; | |
392 | } | |
393 | snd_pcm_stream_unlock_irq(substream); | |
394 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
395 | if (!substream->oss.oss) | |
396 | #endif | |
9c323fcb | 397 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
398 | return -EBADFD; |
399 | ||
400 | params->rmask = ~0U; | |
401 | err = snd_pcm_hw_refine(substream, params); | |
402 | if (err < 0) | |
403 | goto _error; | |
404 | ||
405 | err = snd_pcm_hw_params_choose(substream, params); | |
406 | if (err < 0) | |
407 | goto _error; | |
408 | ||
409 | if (substream->ops->hw_params != NULL) { | |
410 | err = substream->ops->hw_params(substream, params); | |
411 | if (err < 0) | |
412 | goto _error; | |
413 | } | |
414 | ||
415 | runtime->access = params_access(params); | |
416 | runtime->format = params_format(params); | |
417 | runtime->subformat = params_subformat(params); | |
418 | runtime->channels = params_channels(params); | |
419 | runtime->rate = params_rate(params); | |
420 | runtime->period_size = params_period_size(params); | |
421 | runtime->periods = params_periods(params); | |
422 | runtime->buffer_size = params_buffer_size(params); | |
1da177e4 LT |
423 | runtime->info = params->info; |
424 | runtime->rate_num = params->rate_num; | |
425 | runtime->rate_den = params->rate_den; | |
426 | ||
427 | bits = snd_pcm_format_physical_width(runtime->format); | |
428 | runtime->sample_bits = bits; | |
429 | bits *= runtime->channels; | |
430 | runtime->frame_bits = bits; | |
431 | frames = 1; | |
432 | while (bits % 8 != 0) { | |
433 | bits *= 2; | |
434 | frames *= 2; | |
435 | } | |
436 | runtime->byte_align = bits / 8; | |
437 | runtime->min_align = frames; | |
438 | ||
439 | /* Default sw params */ | |
440 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
441 | runtime->period_step = 1; | |
1da177e4 | 442 | runtime->control->avail_min = runtime->period_size; |
1da177e4 LT |
443 | runtime->start_threshold = 1; |
444 | runtime->stop_threshold = runtime->buffer_size; | |
445 | runtime->silence_threshold = 0; | |
446 | runtime->silence_size = 0; | |
ead4046b CL |
447 | runtime->boundary = runtime->buffer_size; |
448 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
449 | runtime->boundary *= 2; | |
1da177e4 LT |
450 | |
451 | snd_pcm_timer_resolution_change(substream); | |
452 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
9442e691 | 453 | |
82f68251 JB |
454 | if (pm_qos_request_active(&substream->latency_pm_qos_req)) |
455 | pm_qos_remove_request(&substream->latency_pm_qos_req); | |
9442e691 | 456 | if ((usecs = period_to_usecs(runtime)) >= 0) |
82f68251 JB |
457 | pm_qos_add_request(&substream->latency_pm_qos_req, |
458 | PM_QOS_CPU_DMA_LATENCY, usecs); | |
1da177e4 LT |
459 | return 0; |
460 | _error: | |
461 | /* hardware might be unuseable from this time, | |
462 | so we force application to retry to set | |
463 | the correct hardware parameter settings */ | |
464 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
465 | if (substream->ops->hw_free != NULL) | |
466 | substream->ops->hw_free(substream); | |
467 | return err; | |
468 | } | |
469 | ||
877211f5 TI |
470 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
471 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 472 | { |
877211f5 | 473 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
474 | int err; |
475 | ||
ef44a1ec LZ |
476 | params = memdup_user(_params, sizeof(*params)); |
477 | if (IS_ERR(params)) | |
478 | return PTR_ERR(params); | |
479 | ||
1da177e4 LT |
480 | err = snd_pcm_hw_params(substream, params); |
481 | if (copy_to_user(_params, params, sizeof(*params))) { | |
482 | if (!err) | |
483 | err = -EFAULT; | |
484 | } | |
ef44a1ec | 485 | |
1da177e4 LT |
486 | kfree(params); |
487 | return err; | |
488 | } | |
489 | ||
877211f5 | 490 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 491 | { |
877211f5 | 492 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
493 | int result = 0; |
494 | ||
7eaa943c TI |
495 | if (PCM_RUNTIME_CHECK(substream)) |
496 | return -ENXIO; | |
1da177e4 | 497 | runtime = substream->runtime; |
1da177e4 LT |
498 | snd_pcm_stream_lock_irq(substream); |
499 | switch (runtime->status->state) { | |
500 | case SNDRV_PCM_STATE_SETUP: | |
501 | case SNDRV_PCM_STATE_PREPARED: | |
502 | break; | |
503 | default: | |
504 | snd_pcm_stream_unlock_irq(substream); | |
505 | return -EBADFD; | |
506 | } | |
507 | snd_pcm_stream_unlock_irq(substream); | |
9c323fcb | 508 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
509 | return -EBADFD; |
510 | if (substream->ops->hw_free) | |
511 | result = substream->ops->hw_free(substream); | |
512 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
82f68251 | 513 | pm_qos_remove_request(&substream->latency_pm_qos_req); |
1da177e4 LT |
514 | return result; |
515 | } | |
516 | ||
877211f5 TI |
517 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
518 | struct snd_pcm_sw_params *params) | |
1da177e4 | 519 | { |
877211f5 | 520 | struct snd_pcm_runtime *runtime; |
1250932e | 521 | int err; |
1da177e4 | 522 | |
7eaa943c TI |
523 | if (PCM_RUNTIME_CHECK(substream)) |
524 | return -ENXIO; | |
1da177e4 | 525 | runtime = substream->runtime; |
1da177e4 LT |
526 | snd_pcm_stream_lock_irq(substream); |
527 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
528 | snd_pcm_stream_unlock_irq(substream); | |
529 | return -EBADFD; | |
530 | } | |
531 | snd_pcm_stream_unlock_irq(substream); | |
532 | ||
533 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
534 | return -EINVAL; | |
535 | if (params->avail_min == 0) | |
536 | return -EINVAL; | |
1da177e4 LT |
537 | if (params->silence_size >= runtime->boundary) { |
538 | if (params->silence_threshold != 0) | |
539 | return -EINVAL; | |
540 | } else { | |
541 | if (params->silence_size > params->silence_threshold) | |
542 | return -EINVAL; | |
543 | if (params->silence_threshold > runtime->buffer_size) | |
544 | return -EINVAL; | |
545 | } | |
1250932e | 546 | err = 0; |
1da177e4 LT |
547 | snd_pcm_stream_lock_irq(substream); |
548 | runtime->tstamp_mode = params->tstamp_mode; | |
1da177e4 LT |
549 | runtime->period_step = params->period_step; |
550 | runtime->control->avail_min = params->avail_min; | |
551 | runtime->start_threshold = params->start_threshold; | |
552 | runtime->stop_threshold = params->stop_threshold; | |
553 | runtime->silence_threshold = params->silence_threshold; | |
554 | runtime->silence_size = params->silence_size; | |
1da177e4 LT |
555 | params->boundary = runtime->boundary; |
556 | if (snd_pcm_running(substream)) { | |
1da177e4 LT |
557 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
558 | runtime->silence_size > 0) | |
559 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1250932e | 560 | err = snd_pcm_update_state(substream, runtime); |
1da177e4 LT |
561 | } |
562 | snd_pcm_stream_unlock_irq(substream); | |
1250932e | 563 | return err; |
1da177e4 LT |
564 | } |
565 | ||
877211f5 TI |
566 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
567 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 568 | { |
877211f5 | 569 | struct snd_pcm_sw_params params; |
1da177e4 LT |
570 | int err; |
571 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
572 | return -EFAULT; | |
573 | err = snd_pcm_sw_params(substream, ¶ms); | |
574 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
575 | return -EFAULT; | |
576 | return err; | |
577 | } | |
578 | ||
877211f5 TI |
579 | int snd_pcm_status(struct snd_pcm_substream *substream, |
580 | struct snd_pcm_status *status) | |
1da177e4 | 581 | { |
877211f5 | 582 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
583 | |
584 | snd_pcm_stream_lock_irq(substream); | |
585 | status->state = runtime->status->state; | |
586 | status->suspended_state = runtime->status->suspended_state; | |
587 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
588 | goto _end; | |
589 | status->trigger_tstamp = runtime->trigger_tstamp; | |
8c121586 | 590 | if (snd_pcm_running(substream)) { |
1da177e4 | 591 | snd_pcm_update_hw_ptr(substream); |
8c121586 JK |
592 | if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) { |
593 | status->tstamp = runtime->status->tstamp; | |
594 | goto _tstamp_end; | |
595 | } | |
596 | } | |
a713b583 | 597 | snd_pcm_gettime(runtime, &status->tstamp); |
8c121586 | 598 | _tstamp_end: |
1da177e4 LT |
599 | status->appl_ptr = runtime->control->appl_ptr; |
600 | status->hw_ptr = runtime->status->hw_ptr; | |
601 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
602 | status->avail = snd_pcm_playback_avail(runtime); | |
603 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
4bbe1ddf | 604 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
1da177e4 | 605 | status->delay = runtime->buffer_size - status->avail; |
4bbe1ddf TI |
606 | status->delay += runtime->delay; |
607 | } else | |
1da177e4 LT |
608 | status->delay = 0; |
609 | } else { | |
610 | status->avail = snd_pcm_capture_avail(runtime); | |
611 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
4bbe1ddf | 612 | status->delay = status->avail + runtime->delay; |
1da177e4 LT |
613 | else |
614 | status->delay = 0; | |
615 | } | |
616 | status->avail_max = runtime->avail_max; | |
617 | status->overrange = runtime->overrange; | |
618 | runtime->avail_max = 0; | |
619 | runtime->overrange = 0; | |
620 | _end: | |
621 | snd_pcm_stream_unlock_irq(substream); | |
622 | return 0; | |
623 | } | |
624 | ||
877211f5 TI |
625 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
626 | struct snd_pcm_status __user * _status) | |
1da177e4 | 627 | { |
877211f5 | 628 | struct snd_pcm_status status; |
1da177e4 LT |
629 | int res; |
630 | ||
1da177e4 LT |
631 | memset(&status, 0, sizeof(status)); |
632 | res = snd_pcm_status(substream, &status); | |
633 | if (res < 0) | |
634 | return res; | |
635 | if (copy_to_user(_status, &status, sizeof(status))) | |
636 | return -EFAULT; | |
637 | return 0; | |
638 | } | |
639 | ||
877211f5 TI |
640 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
641 | struct snd_pcm_channel_info * info) | |
1da177e4 | 642 | { |
877211f5 | 643 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
644 | unsigned int channel; |
645 | ||
1da177e4 LT |
646 | channel = info->channel; |
647 | runtime = substream->runtime; | |
648 | snd_pcm_stream_lock_irq(substream); | |
649 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
650 | snd_pcm_stream_unlock_irq(substream); | |
651 | return -EBADFD; | |
652 | } | |
653 | snd_pcm_stream_unlock_irq(substream); | |
654 | if (channel >= runtime->channels) | |
655 | return -EINVAL; | |
656 | memset(info, 0, sizeof(*info)); | |
657 | info->channel = channel; | |
658 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
659 | } | |
660 | ||
877211f5 TI |
661 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
662 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 663 | { |
877211f5 | 664 | struct snd_pcm_channel_info info; |
1da177e4 LT |
665 | int res; |
666 | ||
667 | if (copy_from_user(&info, _info, sizeof(info))) | |
668 | return -EFAULT; | |
669 | res = snd_pcm_channel_info(substream, &info); | |
670 | if (res < 0) | |
671 | return res; | |
672 | if (copy_to_user(_info, &info, sizeof(info))) | |
673 | return -EFAULT; | |
674 | return 0; | |
675 | } | |
676 | ||
877211f5 | 677 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 678 | { |
877211f5 | 679 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
680 | if (runtime->trigger_master == NULL) |
681 | return; | |
682 | if (runtime->trigger_master == substream) { | |
b751eef1 | 683 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); |
1da177e4 LT |
684 | } else { |
685 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
686 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
687 | } | |
688 | runtime->trigger_master = NULL; | |
689 | } | |
690 | ||
691 | struct action_ops { | |
877211f5 TI |
692 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
693 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
694 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
695 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
696 | }; |
697 | ||
698 | /* | |
699 | * this functions is core for handling of linked stream | |
700 | * Note: the stream state might be changed also on failure | |
701 | * Note2: call with calling stream lock + link lock | |
702 | */ | |
703 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 704 | struct snd_pcm_substream *substream, |
1da177e4 LT |
705 | int state, int do_lock) |
706 | { | |
877211f5 TI |
707 | struct snd_pcm_substream *s = NULL; |
708 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
709 | int res = 0; |
710 | ||
ef991b95 | 711 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 712 | if (do_lock && s != substream) |
208eee2a FD |
713 | spin_lock_nested(&s->self_group.lock, |
714 | SINGLE_DEPTH_NESTING); | |
1da177e4 LT |
715 | res = ops->pre_action(s, state); |
716 | if (res < 0) | |
717 | goto _unlock; | |
718 | } | |
ef991b95 | 719 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
720 | res = ops->do_action(s, state); |
721 | if (res < 0) { | |
722 | if (ops->undo_action) { | |
ef991b95 | 723 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
724 | if (s1 == s) /* failed stream */ |
725 | break; | |
726 | ops->undo_action(s1, state); | |
727 | } | |
728 | } | |
729 | s = NULL; /* unlock all */ | |
730 | goto _unlock; | |
731 | } | |
732 | } | |
ef991b95 | 733 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
734 | ops->post_action(s, state); |
735 | } | |
736 | _unlock: | |
737 | if (do_lock) { | |
738 | /* unlock streams */ | |
ef991b95 | 739 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
740 | if (s1 != substream) |
741 | spin_unlock(&s1->self_group.lock); | |
742 | if (s1 == s) /* end */ | |
743 | break; | |
744 | } | |
745 | } | |
746 | return res; | |
747 | } | |
748 | ||
749 | /* | |
750 | * Note: call with stream lock | |
751 | */ | |
752 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 753 | struct snd_pcm_substream *substream, |
1da177e4 LT |
754 | int state) |
755 | { | |
756 | int res; | |
757 | ||
758 | res = ops->pre_action(substream, state); | |
759 | if (res < 0) | |
760 | return res; | |
761 | res = ops->do_action(substream, state); | |
762 | if (res == 0) | |
763 | ops->post_action(substream, state); | |
764 | else if (ops->undo_action) | |
765 | ops->undo_action(substream, state); | |
766 | return res; | |
767 | } | |
768 | ||
769 | /* | |
770 | * Note: call with stream lock | |
771 | */ | |
772 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 773 | struct snd_pcm_substream *substream, |
1da177e4 LT |
774 | int state) |
775 | { | |
776 | int res; | |
777 | ||
778 | if (snd_pcm_stream_linked(substream)) { | |
779 | if (!spin_trylock(&substream->group->lock)) { | |
780 | spin_unlock(&substream->self_group.lock); | |
781 | spin_lock(&substream->group->lock); | |
782 | spin_lock(&substream->self_group.lock); | |
783 | } | |
784 | res = snd_pcm_action_group(ops, substream, state, 1); | |
785 | spin_unlock(&substream->group->lock); | |
786 | } else { | |
787 | res = snd_pcm_action_single(ops, substream, state); | |
788 | } | |
789 | return res; | |
790 | } | |
791 | ||
792 | /* | |
793 | * Note: don't use any locks before | |
794 | */ | |
795 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 796 | struct snd_pcm_substream *substream, |
1da177e4 LT |
797 | int state) |
798 | { | |
799 | int res; | |
800 | ||
801 | read_lock_irq(&snd_pcm_link_rwlock); | |
802 | if (snd_pcm_stream_linked(substream)) { | |
803 | spin_lock(&substream->group->lock); | |
804 | spin_lock(&substream->self_group.lock); | |
805 | res = snd_pcm_action_group(ops, substream, state, 1); | |
806 | spin_unlock(&substream->self_group.lock); | |
807 | spin_unlock(&substream->group->lock); | |
808 | } else { | |
809 | spin_lock(&substream->self_group.lock); | |
810 | res = snd_pcm_action_single(ops, substream, state); | |
811 | spin_unlock(&substream->self_group.lock); | |
812 | } | |
813 | read_unlock_irq(&snd_pcm_link_rwlock); | |
814 | return res; | |
815 | } | |
816 | ||
817 | /* | |
818 | */ | |
819 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 820 | struct snd_pcm_substream *substream, |
1da177e4 LT |
821 | int state) |
822 | { | |
823 | int res; | |
824 | ||
825 | down_read(&snd_pcm_link_rwsem); | |
826 | if (snd_pcm_stream_linked(substream)) | |
827 | res = snd_pcm_action_group(ops, substream, state, 0); | |
828 | else | |
829 | res = snd_pcm_action_single(ops, substream, state); | |
830 | up_read(&snd_pcm_link_rwsem); | |
831 | return res; | |
832 | } | |
833 | ||
834 | /* | |
835 | * start callbacks | |
836 | */ | |
877211f5 | 837 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 838 | { |
877211f5 | 839 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
840 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
841 | return -EBADFD; | |
842 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
843 | !snd_pcm_playback_data(substream)) | |
844 | return -EPIPE; | |
845 | runtime->trigger_master = substream; | |
846 | return 0; | |
847 | } | |
848 | ||
877211f5 | 849 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
850 | { |
851 | if (substream->runtime->trigger_master != substream) | |
852 | return 0; | |
853 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
854 | } | |
855 | ||
877211f5 | 856 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
857 | { |
858 | if (substream->runtime->trigger_master == substream) | |
859 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
860 | } | |
861 | ||
877211f5 | 862 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 863 | { |
877211f5 | 864 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 865 | snd_pcm_trigger_tstamp(substream); |
6af3fb72 | 866 | runtime->hw_ptr_jiffies = jiffies; |
1da177e4 LT |
867 | runtime->status->state = state; |
868 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
869 | runtime->silence_size > 0) | |
870 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1da177e4 | 871 | if (substream->timer) |
877211f5 TI |
872 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
873 | &runtime->trigger_tstamp); | |
1da177e4 LT |
874 | } |
875 | ||
876 | static struct action_ops snd_pcm_action_start = { | |
877 | .pre_action = snd_pcm_pre_start, | |
878 | .do_action = snd_pcm_do_start, | |
879 | .undo_action = snd_pcm_undo_start, | |
880 | .post_action = snd_pcm_post_start | |
881 | }; | |
882 | ||
883 | /** | |
1c85cc64 | 884 | * snd_pcm_start - start all linked streams |
df8db936 | 885 | * @substream: the PCM substream instance |
1da177e4 | 886 | */ |
877211f5 | 887 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 888 | { |
877211f5 TI |
889 | return snd_pcm_action(&snd_pcm_action_start, substream, |
890 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
891 | } |
892 | ||
893 | /* | |
894 | * stop callbacks | |
895 | */ | |
877211f5 | 896 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 897 | { |
877211f5 | 898 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
899 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
900 | return -EBADFD; | |
901 | runtime->trigger_master = substream; | |
902 | return 0; | |
903 | } | |
904 | ||
877211f5 | 905 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
906 | { |
907 | if (substream->runtime->trigger_master == substream && | |
908 | snd_pcm_running(substream)) | |
909 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
910 | return 0; /* unconditonally stop all substreams */ | |
911 | } | |
912 | ||
877211f5 | 913 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 914 | { |
877211f5 | 915 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
916 | if (runtime->status->state != state) { |
917 | snd_pcm_trigger_tstamp(substream); | |
918 | if (substream->timer) | |
877211f5 TI |
919 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
920 | &runtime->trigger_tstamp); | |
1da177e4 | 921 | runtime->status->state = state; |
1da177e4 LT |
922 | } |
923 | wake_up(&runtime->sleep); | |
c91a988d | 924 | wake_up(&runtime->tsleep); |
1da177e4 LT |
925 | } |
926 | ||
927 | static struct action_ops snd_pcm_action_stop = { | |
928 | .pre_action = snd_pcm_pre_stop, | |
929 | .do_action = snd_pcm_do_stop, | |
930 | .post_action = snd_pcm_post_stop | |
931 | }; | |
932 | ||
933 | /** | |
1c85cc64 | 934 | * snd_pcm_stop - try to stop all running streams in the substream group |
df8db936 TI |
935 | * @substream: the PCM substream instance |
936 | * @state: PCM state after stopping the stream | |
1da177e4 | 937 | * |
1c85cc64 | 938 | * The state of each stream is then changed to the given state unconditionally. |
1da177e4 | 939 | */ |
877211f5 | 940 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
941 | { |
942 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
943 | } | |
944 | ||
e88e8ae6 TI |
945 | EXPORT_SYMBOL(snd_pcm_stop); |
946 | ||
1da177e4 | 947 | /** |
1c85cc64 | 948 | * snd_pcm_drain_done - stop the DMA only when the given stream is playback |
df8db936 | 949 | * @substream: the PCM substream |
1da177e4 | 950 | * |
1c85cc64 | 951 | * After stopping, the state is changed to SETUP. |
1da177e4 LT |
952 | * Unlike snd_pcm_stop(), this affects only the given stream. |
953 | */ | |
877211f5 | 954 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 955 | { |
877211f5 TI |
956 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
957 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
958 | } |
959 | ||
960 | /* | |
961 | * pause callbacks | |
962 | */ | |
877211f5 | 963 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 964 | { |
877211f5 | 965 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
966 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
967 | return -ENOSYS; | |
968 | if (push) { | |
969 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
970 | return -EBADFD; | |
971 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
972 | return -EBADFD; | |
973 | runtime->trigger_master = substream; | |
974 | return 0; | |
975 | } | |
976 | ||
877211f5 | 977 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
978 | { |
979 | if (substream->runtime->trigger_master != substream) | |
980 | return 0; | |
56385a12 JK |
981 | /* some drivers might use hw_ptr to recover from the pause - |
982 | update the hw_ptr now */ | |
983 | if (push) | |
984 | snd_pcm_update_hw_ptr(substream); | |
6af3fb72 TI |
985 | /* The jiffies check in snd_pcm_update_hw_ptr*() is done by |
986 | * a delta betwen the current jiffies, this gives a large enough | |
987 | * delta, effectively to skip the check once. | |
988 | */ | |
989 | substream->runtime->hw_ptr_jiffies = jiffies - HZ * 1000; | |
1da177e4 LT |
990 | return substream->ops->trigger(substream, |
991 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
992 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
993 | } | |
994 | ||
877211f5 | 995 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
996 | { |
997 | if (substream->runtime->trigger_master == substream) | |
998 | substream->ops->trigger(substream, | |
999 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
1000 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
1001 | } | |
1002 | ||
877211f5 | 1003 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 1004 | { |
877211f5 | 1005 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1006 | snd_pcm_trigger_tstamp(substream); |
1007 | if (push) { | |
1008 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
1009 | if (substream->timer) | |
877211f5 TI |
1010 | snd_timer_notify(substream->timer, |
1011 | SNDRV_TIMER_EVENT_MPAUSE, | |
1012 | &runtime->trigger_tstamp); | |
1da177e4 | 1013 | wake_up(&runtime->sleep); |
c91a988d | 1014 | wake_up(&runtime->tsleep); |
1da177e4 LT |
1015 | } else { |
1016 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1da177e4 | 1017 | if (substream->timer) |
877211f5 TI |
1018 | snd_timer_notify(substream->timer, |
1019 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1020 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1021 | } |
1022 | } | |
1023 | ||
1024 | static struct action_ops snd_pcm_action_pause = { | |
1025 | .pre_action = snd_pcm_pre_pause, | |
1026 | .do_action = snd_pcm_do_pause, | |
1027 | .undo_action = snd_pcm_undo_pause, | |
1028 | .post_action = snd_pcm_post_pause | |
1029 | }; | |
1030 | ||
1031 | /* | |
1032 | * Push/release the pause for all linked streams. | |
1033 | */ | |
877211f5 | 1034 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1035 | { |
1036 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1037 | } | |
1038 | ||
1039 | #ifdef CONFIG_PM | |
1040 | /* suspend */ | |
1041 | ||
877211f5 | 1042 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1043 | { |
877211f5 | 1044 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1045 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1046 | return -EBUSY; | |
1047 | runtime->trigger_master = substream; | |
1048 | return 0; | |
1049 | } | |
1050 | ||
877211f5 | 1051 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1052 | { |
877211f5 | 1053 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1054 | if (runtime->trigger_master != substream) |
1055 | return 0; | |
1056 | if (! snd_pcm_running(substream)) | |
1057 | return 0; | |
1058 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1059 | return 0; /* suspend unconditionally */ | |
1060 | } | |
1061 | ||
877211f5 | 1062 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1063 | { |
877211f5 | 1064 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1065 | snd_pcm_trigger_tstamp(substream); |
1066 | if (substream->timer) | |
877211f5 TI |
1067 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1068 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1069 | runtime->status->suspended_state = runtime->status->state; |
1070 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1da177e4 | 1071 | wake_up(&runtime->sleep); |
c91a988d | 1072 | wake_up(&runtime->tsleep); |
1da177e4 LT |
1073 | } |
1074 | ||
1075 | static struct action_ops snd_pcm_action_suspend = { | |
1076 | .pre_action = snd_pcm_pre_suspend, | |
1077 | .do_action = snd_pcm_do_suspend, | |
1078 | .post_action = snd_pcm_post_suspend | |
1079 | }; | |
1080 | ||
1081 | /** | |
1c85cc64 | 1082 | * snd_pcm_suspend - trigger SUSPEND to all linked streams |
df8db936 | 1083 | * @substream: the PCM substream |
1da177e4 | 1084 | * |
1da177e4 LT |
1085 | * After this call, all streams are changed to SUSPENDED state. |
1086 | */ | |
877211f5 | 1087 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1088 | { |
1089 | int err; | |
1090 | unsigned long flags; | |
1091 | ||
603bf524 TI |
1092 | if (! substream) |
1093 | return 0; | |
1094 | ||
1da177e4 LT |
1095 | snd_pcm_stream_lock_irqsave(substream, flags); |
1096 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1097 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1098 | return err; | |
1099 | } | |
1100 | ||
e88e8ae6 TI |
1101 | EXPORT_SYMBOL(snd_pcm_suspend); |
1102 | ||
1da177e4 | 1103 | /** |
1c85cc64 | 1104 | * snd_pcm_suspend_all - trigger SUSPEND to all substreams in the given pcm |
df8db936 | 1105 | * @pcm: the PCM instance |
1da177e4 | 1106 | * |
1da177e4 LT |
1107 | * After this call, all streams are changed to SUSPENDED state. |
1108 | */ | |
877211f5 | 1109 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1110 | { |
877211f5 | 1111 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1112 | int stream, err = 0; |
1113 | ||
603bf524 TI |
1114 | if (! pcm) |
1115 | return 0; | |
1116 | ||
1da177e4 | 1117 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1118 | for (substream = pcm->streams[stream].substream; |
1119 | substream; substream = substream->next) { | |
1da177e4 LT |
1120 | /* FIXME: the open/close code should lock this as well */ |
1121 | if (substream->runtime == NULL) | |
1122 | continue; | |
1123 | err = snd_pcm_suspend(substream); | |
1124 | if (err < 0 && err != -EBUSY) | |
1125 | return err; | |
1126 | } | |
1127 | } | |
1128 | return 0; | |
1129 | } | |
1130 | ||
e88e8ae6 TI |
1131 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1132 | ||
1da177e4 LT |
1133 | /* resume */ |
1134 | ||
877211f5 | 1135 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1136 | { |
877211f5 | 1137 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1138 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1139 | return -ENOSYS; | |
1140 | runtime->trigger_master = substream; | |
1141 | return 0; | |
1142 | } | |
1143 | ||
877211f5 | 1144 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1145 | { |
877211f5 | 1146 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1147 | if (runtime->trigger_master != substream) |
1148 | return 0; | |
1149 | /* DMA not running previously? */ | |
1150 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1151 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1152 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1153 | return 0; | |
1154 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1155 | } | |
1156 | ||
877211f5 | 1157 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1158 | { |
1159 | if (substream->runtime->trigger_master == substream && | |
1160 | snd_pcm_running(substream)) | |
1161 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1162 | } | |
1163 | ||
877211f5 | 1164 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1165 | { |
877211f5 | 1166 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1167 | snd_pcm_trigger_tstamp(substream); |
1168 | if (substream->timer) | |
877211f5 TI |
1169 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1170 | &runtime->trigger_tstamp); | |
1da177e4 | 1171 | runtime->status->state = runtime->status->suspended_state; |
1da177e4 LT |
1172 | } |
1173 | ||
1174 | static struct action_ops snd_pcm_action_resume = { | |
1175 | .pre_action = snd_pcm_pre_resume, | |
1176 | .do_action = snd_pcm_do_resume, | |
1177 | .undo_action = snd_pcm_undo_resume, | |
1178 | .post_action = snd_pcm_post_resume | |
1179 | }; | |
1180 | ||
877211f5 | 1181 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1182 | { |
877211f5 | 1183 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1184 | int res; |
1185 | ||
1186 | snd_power_lock(card); | |
cbac4b0c | 1187 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1188 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1189 | snd_power_unlock(card); | |
1190 | return res; | |
1191 | } | |
1192 | ||
1193 | #else | |
1194 | ||
877211f5 | 1195 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1196 | { |
1197 | return -ENOSYS; | |
1198 | } | |
1199 | ||
1200 | #endif /* CONFIG_PM */ | |
1201 | ||
1202 | /* | |
1203 | * xrun ioctl | |
1204 | * | |
1205 | * Change the RUNNING stream(s) to XRUN state. | |
1206 | */ | |
877211f5 | 1207 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1208 | { |
877211f5 TI |
1209 | struct snd_card *card = substream->pcm->card; |
1210 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1211 | int result; |
1212 | ||
1213 | snd_power_lock(card); | |
1214 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1215 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1216 | if (result < 0) |
1217 | goto _unlock; | |
1218 | } | |
1219 | ||
1220 | snd_pcm_stream_lock_irq(substream); | |
1221 | switch (runtime->status->state) { | |
1222 | case SNDRV_PCM_STATE_XRUN: | |
1223 | result = 0; /* already there */ | |
1224 | break; | |
1225 | case SNDRV_PCM_STATE_RUNNING: | |
1226 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1227 | break; | |
1228 | default: | |
1229 | result = -EBADFD; | |
1230 | } | |
1231 | snd_pcm_stream_unlock_irq(substream); | |
1232 | _unlock: | |
1233 | snd_power_unlock(card); | |
1234 | return result; | |
1235 | } | |
1236 | ||
1237 | /* | |
1238 | * reset ioctl | |
1239 | */ | |
877211f5 | 1240 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1241 | { |
877211f5 | 1242 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1243 | switch (runtime->status->state) { |
1244 | case SNDRV_PCM_STATE_RUNNING: | |
1245 | case SNDRV_PCM_STATE_PREPARED: | |
1246 | case SNDRV_PCM_STATE_PAUSED: | |
1247 | case SNDRV_PCM_STATE_SUSPENDED: | |
1248 | return 0; | |
1249 | default: | |
1250 | return -EBADFD; | |
1251 | } | |
1252 | } | |
1253 | ||
877211f5 | 1254 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1255 | { |
877211f5 | 1256 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1257 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1258 | if (err < 0) | |
1259 | return err; | |
1da177e4 | 1260 | runtime->hw_ptr_base = 0; |
e7636925 JK |
1261 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1262 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1263 | runtime->silence_start = runtime->status->hw_ptr; |
1264 | runtime->silence_filled = 0; | |
1265 | return 0; | |
1266 | } | |
1267 | ||
877211f5 | 1268 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1269 | { |
877211f5 | 1270 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1271 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1272 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1273 | runtime->silence_size > 0) | |
1274 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1275 | } | |
1276 | ||
1277 | static struct action_ops snd_pcm_action_reset = { | |
1278 | .pre_action = snd_pcm_pre_reset, | |
1279 | .do_action = snd_pcm_do_reset, | |
1280 | .post_action = snd_pcm_post_reset | |
1281 | }; | |
1282 | ||
877211f5 | 1283 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1284 | { |
1285 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1286 | } | |
1287 | ||
1288 | /* | |
1289 | * prepare ioctl | |
1290 | */ | |
0df63e44 TI |
1291 | /* we use the second argument for updating f_flags */ |
1292 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, | |
1293 | int f_flags) | |
1da177e4 | 1294 | { |
877211f5 | 1295 | struct snd_pcm_runtime *runtime = substream->runtime; |
de1b8b93 TI |
1296 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1297 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1298 | return -EBADFD; |
1299 | if (snd_pcm_running(substream)) | |
1300 | return -EBUSY; | |
0df63e44 | 1301 | substream->f_flags = f_flags; |
1da177e4 LT |
1302 | return 0; |
1303 | } | |
1304 | ||
877211f5 | 1305 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1306 | { |
1307 | int err; | |
1308 | err = substream->ops->prepare(substream); | |
1309 | if (err < 0) | |
1310 | return err; | |
1311 | return snd_pcm_do_reset(substream, 0); | |
1312 | } | |
1313 | ||
877211f5 | 1314 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1315 | { |
877211f5 | 1316 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1317 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1318 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1319 | } | |
1320 | ||
1321 | static struct action_ops snd_pcm_action_prepare = { | |
1322 | .pre_action = snd_pcm_pre_prepare, | |
1323 | .do_action = snd_pcm_do_prepare, | |
1324 | .post_action = snd_pcm_post_prepare | |
1325 | }; | |
1326 | ||
1327 | /** | |
1c85cc64 | 1328 | * snd_pcm_prepare - prepare the PCM substream to be triggerable |
df8db936 | 1329 | * @substream: the PCM substream instance |
0df63e44 | 1330 | * @file: file to refer f_flags |
1da177e4 | 1331 | */ |
0df63e44 TI |
1332 | static int snd_pcm_prepare(struct snd_pcm_substream *substream, |
1333 | struct file *file) | |
1da177e4 LT |
1334 | { |
1335 | int res; | |
877211f5 | 1336 | struct snd_card *card = substream->pcm->card; |
0df63e44 TI |
1337 | int f_flags; |
1338 | ||
1339 | if (file) | |
1340 | f_flags = file->f_flags; | |
1341 | else | |
1342 | f_flags = substream->f_flags; | |
1da177e4 LT |
1343 | |
1344 | snd_power_lock(card); | |
cbac4b0c | 1345 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
0df63e44 TI |
1346 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, |
1347 | substream, f_flags); | |
1da177e4 LT |
1348 | snd_power_unlock(card); |
1349 | return res; | |
1350 | } | |
1351 | ||
1352 | /* | |
1353 | * drain ioctl | |
1354 | */ | |
1355 | ||
877211f5 | 1356 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1357 | { |
1da177e4 LT |
1358 | substream->runtime->trigger_master = substream; |
1359 | return 0; | |
1360 | } | |
1361 | ||
877211f5 | 1362 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1363 | { |
877211f5 | 1364 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1365 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1366 | switch (runtime->status->state) { | |
1367 | case SNDRV_PCM_STATE_PREPARED: | |
1368 | /* start playback stream if possible */ | |
1369 | if (! snd_pcm_playback_empty(substream)) { | |
1370 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1371 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1372 | } | |
1373 | break; | |
1374 | case SNDRV_PCM_STATE_RUNNING: | |
1375 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1376 | break; | |
1377 | default: | |
1378 | break; | |
1379 | } | |
1380 | } else { | |
1381 | /* stop running stream */ | |
1382 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
b05e5787 | 1383 | int new_state = snd_pcm_capture_avail(runtime) > 0 ? |
1da177e4 | 1384 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; |
b05e5787 MŚ |
1385 | snd_pcm_do_stop(substream, new_state); |
1386 | snd_pcm_post_stop(substream, new_state); | |
1da177e4 LT |
1387 | } |
1388 | } | |
1389 | return 0; | |
1390 | } | |
1391 | ||
877211f5 | 1392 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1393 | { |
1394 | } | |
1395 | ||
1396 | static struct action_ops snd_pcm_action_drain_init = { | |
1397 | .pre_action = snd_pcm_pre_drain_init, | |
1398 | .do_action = snd_pcm_do_drain_init, | |
1399 | .post_action = snd_pcm_post_drain_init | |
1400 | }; | |
1401 | ||
877211f5 | 1402 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1403 | |
1404 | /* | |
1405 | * Drain the stream(s). | |
1406 | * When the substream is linked, sync until the draining of all playback streams | |
1407 | * is finished. | |
1408 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1409 | * (capture only) state. | |
1410 | */ | |
4cdc115f TI |
1411 | static int snd_pcm_drain(struct snd_pcm_substream *substream, |
1412 | struct file *file) | |
1da177e4 | 1413 | { |
877211f5 TI |
1414 | struct snd_card *card; |
1415 | struct snd_pcm_runtime *runtime; | |
ef991b95 | 1416 | struct snd_pcm_substream *s; |
d3a7dcfe | 1417 | wait_queue_t wait; |
1da177e4 | 1418 | int result = 0; |
4cdc115f | 1419 | int nonblock = 0; |
1da177e4 | 1420 | |
1da177e4 LT |
1421 | card = substream->pcm->card; |
1422 | runtime = substream->runtime; | |
1423 | ||
1424 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1425 | return -EBADFD; | |
1426 | ||
1da177e4 LT |
1427 | snd_power_lock(card); |
1428 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1429 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1430 | if (result < 0) { |
1431 | snd_power_unlock(card); | |
1432 | return result; | |
1433 | } | |
1da177e4 LT |
1434 | } |
1435 | ||
4cdc115f TI |
1436 | if (file) { |
1437 | if (file->f_flags & O_NONBLOCK) | |
1438 | nonblock = 1; | |
1439 | } else if (substream->f_flags & O_NONBLOCK) | |
1440 | nonblock = 1; | |
1441 | ||
21cb2a2e | 1442 | down_read(&snd_pcm_link_rwsem); |
21cb2a2e TI |
1443 | snd_pcm_stream_lock_irq(substream); |
1444 | /* resume pause */ | |
d3a7dcfe | 1445 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
21cb2a2e TI |
1446 | snd_pcm_pause(substream, 0); |
1447 | ||
1448 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1449 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
4cdc115f TI |
1450 | if (result < 0) |
1451 | goto unlock; | |
1452 | /* in non-blocking, we don't wait in ioctl but let caller poll */ | |
1453 | if (nonblock) { | |
1454 | result = -EAGAIN; | |
1455 | goto unlock; | |
21cb2a2e | 1456 | } |
1da177e4 LT |
1457 | |
1458 | for (;;) { | |
1459 | long tout; | |
d3a7dcfe | 1460 | struct snd_pcm_runtime *to_check; |
1da177e4 LT |
1461 | if (signal_pending(current)) { |
1462 | result = -ERESTARTSYS; | |
1463 | break; | |
1464 | } | |
d3a7dcfe TI |
1465 | /* find a substream to drain */ |
1466 | to_check = NULL; | |
1467 | snd_pcm_group_for_each_entry(s, substream) { | |
1468 | if (s->stream != SNDRV_PCM_STREAM_PLAYBACK) | |
1469 | continue; | |
1470 | runtime = s->runtime; | |
1471 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { | |
1472 | to_check = runtime; | |
21cb2a2e | 1473 | break; |
d3a7dcfe | 1474 | } |
21cb2a2e | 1475 | } |
d3a7dcfe TI |
1476 | if (!to_check) |
1477 | break; /* all drained */ | |
1478 | init_waitqueue_entry(&wait, current); | |
1479 | add_wait_queue(&to_check->sleep, &wait); | |
1da177e4 LT |
1480 | set_current_state(TASK_INTERRUPTIBLE); |
1481 | snd_pcm_stream_unlock_irq(substream); | |
d3a7dcfe | 1482 | up_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1483 | snd_power_unlock(card); |
1484 | tout = schedule_timeout(10 * HZ); | |
1485 | snd_power_lock(card); | |
d3a7dcfe | 1486 | down_read(&snd_pcm_link_rwsem); |
1da177e4 | 1487 | snd_pcm_stream_lock_irq(substream); |
d3a7dcfe | 1488 | remove_wait_queue(&to_check->sleep, &wait); |
1da177e4 LT |
1489 | if (tout == 0) { |
1490 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1491 | result = -ESTRPIPE; | |
1492 | else { | |
1493 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1494 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1495 | result = -EIO; | |
1496 | } | |
1497 | break; | |
1498 | } | |
1da177e4 | 1499 | } |
21cb2a2e | 1500 | |
4cdc115f | 1501 | unlock: |
21cb2a2e | 1502 | snd_pcm_stream_unlock_irq(substream); |
d3a7dcfe | 1503 | up_read(&snd_pcm_link_rwsem); |
1da177e4 | 1504 | snd_power_unlock(card); |
1da177e4 LT |
1505 | |
1506 | return result; | |
1507 | } | |
1508 | ||
1509 | /* | |
1510 | * drop ioctl | |
1511 | * | |
1512 | * Immediately put all linked substreams into SETUP state. | |
1513 | */ | |
877211f5 | 1514 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1515 | { |
877211f5 TI |
1516 | struct snd_pcm_runtime *runtime; |
1517 | struct snd_card *card; | |
1da177e4 LT |
1518 | int result = 0; |
1519 | ||
7eaa943c TI |
1520 | if (PCM_RUNTIME_CHECK(substream)) |
1521 | return -ENXIO; | |
1da177e4 LT |
1522 | runtime = substream->runtime; |
1523 | card = substream->pcm->card; | |
1524 | ||
de1b8b93 | 1525 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
24e8fc49 TI |
1526 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED || |
1527 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1da177e4 LT |
1528 | return -EBADFD; |
1529 | ||
1da177e4 LT |
1530 | snd_pcm_stream_lock_irq(substream); |
1531 | /* resume pause */ | |
1532 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1533 | snd_pcm_pause(substream, 0); | |
1534 | ||
1535 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1536 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1537 | snd_pcm_stream_unlock_irq(substream); | |
24e8fc49 | 1538 | |
1da177e4 LT |
1539 | return result; |
1540 | } | |
1541 | ||
1542 | ||
1543 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1544 | static struct file *snd_pcm_file_fd(int fd) |
1545 | { | |
1546 | struct file *file; | |
1547 | struct inode *inode; | |
f87135f5 CL |
1548 | unsigned int minor; |
1549 | ||
1da177e4 LT |
1550 | file = fget(fd); |
1551 | if (!file) | |
1552 | return NULL; | |
7bc56323 | 1553 | inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
1554 | if (!S_ISCHR(inode->i_mode) || |
1555 | imajor(inode) != snd_major) { | |
1556 | fput(file); | |
1557 | return NULL; | |
1558 | } | |
1559 | minor = iminor(inode); | |
f87135f5 CL |
1560 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1561 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1562 | fput(file); |
1563 | return NULL; | |
1564 | } | |
1565 | return file; | |
1566 | } | |
1567 | ||
1568 | /* | |
1569 | * PCM link handling | |
1570 | */ | |
877211f5 | 1571 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1572 | { |
1573 | int res = 0; | |
1574 | struct file *file; | |
877211f5 TI |
1575 | struct snd_pcm_file *pcm_file; |
1576 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1577 | |
1578 | file = snd_pcm_file_fd(fd); | |
1579 | if (!file) | |
1580 | return -EBADFD; | |
1581 | pcm_file = file->private_data; | |
1582 | substream1 = pcm_file->substream; | |
1583 | down_write(&snd_pcm_link_rwsem); | |
1584 | write_lock_irq(&snd_pcm_link_rwlock); | |
1585 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1586 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1587 | res = -EBADFD; | |
1588 | goto _end; | |
1589 | } | |
1590 | if (snd_pcm_stream_linked(substream1)) { | |
1591 | res = -EALREADY; | |
1592 | goto _end; | |
1593 | } | |
1594 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1595 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1596 | if (substream->group == NULL) { |
1597 | res = -ENOMEM; | |
1598 | goto _end; | |
1599 | } | |
1600 | spin_lock_init(&substream->group->lock); | |
1601 | INIT_LIST_HEAD(&substream->group->substreams); | |
1602 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1603 | substream->group->count = 1; | |
1604 | } | |
1605 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1606 | substream->group->count++; | |
1607 | substream1->group = substream->group; | |
1608 | _end: | |
1609 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1610 | up_write(&snd_pcm_link_rwsem); | |
1611 | fput(file); | |
1612 | return res; | |
1613 | } | |
1614 | ||
877211f5 | 1615 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1616 | { |
1617 | substream->group = &substream->self_group; | |
1618 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1619 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1620 | } | |
1621 | ||
877211f5 | 1622 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 | 1623 | { |
ef991b95 | 1624 | struct snd_pcm_substream *s; |
1da177e4 LT |
1625 | int res = 0; |
1626 | ||
1627 | down_write(&snd_pcm_link_rwsem); | |
1628 | write_lock_irq(&snd_pcm_link_rwlock); | |
1629 | if (!snd_pcm_stream_linked(substream)) { | |
1630 | res = -EALREADY; | |
1631 | goto _end; | |
1632 | } | |
1633 | list_del(&substream->link_list); | |
1634 | substream->group->count--; | |
1635 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
ef991b95 TI |
1636 | snd_pcm_group_for_each_entry(s, substream) { |
1637 | relink_to_local(s); | |
1da177e4 LT |
1638 | break; |
1639 | } | |
1640 | kfree(substream->group); | |
1641 | } | |
1642 | relink_to_local(substream); | |
1643 | _end: | |
1644 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1645 | up_write(&snd_pcm_link_rwsem); | |
1646 | return res; | |
1647 | } | |
1648 | ||
1649 | /* | |
1650 | * hw configurator | |
1651 | */ | |
877211f5 TI |
1652 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1653 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1654 | { |
877211f5 | 1655 | struct snd_interval t; |
1da177e4 LT |
1656 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1657 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1658 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1659 | } | |
1660 | ||
877211f5 TI |
1661 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1662 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1663 | { |
877211f5 | 1664 | struct snd_interval t; |
1da177e4 LT |
1665 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1666 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1667 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1668 | } | |
1669 | ||
877211f5 TI |
1670 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1671 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1672 | { |
877211f5 | 1673 | struct snd_interval t; |
1da177e4 LT |
1674 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1675 | hw_param_interval_c(params, rule->deps[1]), | |
1676 | (unsigned long) rule->private, &t); | |
1677 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1678 | } | |
1679 | ||
877211f5 TI |
1680 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1681 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1682 | { |
877211f5 | 1683 | struct snd_interval t; |
1da177e4 LT |
1684 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1685 | (unsigned long) rule->private, | |
1686 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1687 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1688 | } | |
1689 | ||
877211f5 TI |
1690 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1691 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1692 | { |
1693 | unsigned int k; | |
877211f5 TI |
1694 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1695 | struct snd_mask m; | |
1696 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1697 | snd_mask_any(&m); |
1698 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1699 | int bits; | |
1700 | if (! snd_mask_test(mask, k)) | |
1701 | continue; | |
1702 | bits = snd_pcm_format_physical_width(k); | |
1703 | if (bits <= 0) | |
1704 | continue; /* ignore invalid formats */ | |
1705 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1706 | snd_mask_reset(&m, k); | |
1707 | } | |
1708 | return snd_mask_refine(mask, &m); | |
1709 | } | |
1710 | ||
877211f5 TI |
1711 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1712 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1713 | { |
877211f5 | 1714 | struct snd_interval t; |
1da177e4 LT |
1715 | unsigned int k; |
1716 | t.min = UINT_MAX; | |
1717 | t.max = 0; | |
1718 | t.openmin = 0; | |
1719 | t.openmax = 0; | |
1720 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1721 | int bits; | |
1722 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1723 | continue; | |
1724 | bits = snd_pcm_format_physical_width(k); | |
1725 | if (bits <= 0) | |
1726 | continue; /* ignore invalid formats */ | |
1727 | if (t.min > (unsigned)bits) | |
1728 | t.min = bits; | |
1729 | if (t.max < (unsigned)bits) | |
1730 | t.max = bits; | |
1731 | } | |
1732 | t.integer = 1; | |
1733 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1734 | } | |
1735 | ||
1736 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1737 | #error "Change this table" | |
1738 | #endif | |
1739 | ||
1740 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1741 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1742 | ||
7653d557 CL |
1743 | const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = { |
1744 | .count = ARRAY_SIZE(rates), | |
1745 | .list = rates, | |
1746 | }; | |
1747 | ||
877211f5 TI |
1748 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1749 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1750 | { |
877211f5 | 1751 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 | 1752 | return snd_interval_list(hw_param_interval(params, rule->var), |
7653d557 CL |
1753 | snd_pcm_known_rates.count, |
1754 | snd_pcm_known_rates.list, hw->rates); | |
1da177e4 LT |
1755 | } |
1756 | ||
877211f5 TI |
1757 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1758 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1759 | { |
877211f5 TI |
1760 | struct snd_interval t; |
1761 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1762 | t.min = 0; |
1763 | t.max = substream->buffer_bytes_max; | |
1764 | t.openmin = 0; | |
1765 | t.openmax = 0; | |
1766 | t.integer = 1; | |
1767 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1768 | } | |
1769 | ||
877211f5 | 1770 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1771 | { |
877211f5 TI |
1772 | struct snd_pcm_runtime *runtime = substream->runtime; |
1773 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1774 | int k, err; |
1775 | ||
1776 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1777 | snd_mask_any(constrs_mask(constrs, k)); | |
1778 | } | |
1779 | ||
1780 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1781 | snd_interval_any(constrs_interval(constrs, k)); | |
1782 | } | |
1783 | ||
1784 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1785 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1786 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1787 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1788 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1789 | ||
1790 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1791 | snd_pcm_hw_rule_format, NULL, | |
1792 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1793 | if (err < 0) | |
1794 | return err; | |
1795 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1796 | snd_pcm_hw_rule_sample_bits, NULL, | |
1797 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1798 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1799 | if (err < 0) | |
1800 | return err; | |
1801 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1802 | snd_pcm_hw_rule_div, NULL, | |
1803 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1804 | if (err < 0) | |
1805 | return err; | |
1806 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1807 | snd_pcm_hw_rule_mul, NULL, | |
1808 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1809 | if (err < 0) | |
1810 | return err; | |
1811 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1812 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1813 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1814 | if (err < 0) | |
1815 | return err; | |
1816 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1817 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1818 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1819 | if (err < 0) | |
1820 | return err; | |
1821 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1822 | snd_pcm_hw_rule_div, NULL, | |
1823 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1824 | if (err < 0) | |
1825 | return err; | |
1826 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1827 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1828 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1829 | if (err < 0) | |
1830 | return err; | |
1831 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1832 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1833 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1834 | if (err < 0) | |
1835 | return err; | |
1836 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1837 | snd_pcm_hw_rule_div, NULL, | |
1838 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1839 | if (err < 0) | |
1840 | return err; | |
1841 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1842 | snd_pcm_hw_rule_div, NULL, | |
1843 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1844 | if (err < 0) | |
1845 | return err; | |
1846 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1847 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1848 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1849 | if (err < 0) | |
1850 | return err; | |
1851 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1852 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1853 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1854 | if (err < 0) | |
1855 | return err; | |
1856 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1857 | snd_pcm_hw_rule_mul, NULL, | |
1858 | SNDRV_PCM_HW_PARAM_PERIOD_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_BUFFER_SIZE, | |
1862 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1863 | SNDRV_PCM_HW_PARAM_BUFFER_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_BUFFER_SIZE, | |
1867 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1868 | SNDRV_PCM_HW_PARAM_BUFFER_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_PERIOD_BYTES, | |
1872 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1873 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1874 | if (err < 0) | |
1875 | return err; | |
1876 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1877 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1878 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 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_PERIOD_TIME, | |
1882 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1883 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 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_BUFFER_TIME, | |
1887 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1888 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1889 | if (err < 0) | |
1890 | return err; | |
1891 | return 0; | |
1892 | } | |
1893 | ||
877211f5 | 1894 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1895 | { |
877211f5 TI |
1896 | struct snd_pcm_runtime *runtime = substream->runtime; |
1897 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1898 | int err; |
1899 | unsigned int mask = 0; | |
1900 | ||
1901 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1902 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1903 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1904 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1905 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1906 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1907 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1908 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1909 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1910 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1911 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1912 | } | |
1913 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
7eaa943c TI |
1914 | if (err < 0) |
1915 | return err; | |
1da177e4 LT |
1916 | |
1917 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
7eaa943c TI |
1918 | if (err < 0) |
1919 | return err; | |
1da177e4 LT |
1920 | |
1921 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
7eaa943c TI |
1922 | if (err < 0) |
1923 | return err; | |
1da177e4 LT |
1924 | |
1925 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1926 | hw->channels_min, hw->channels_max); | |
7eaa943c TI |
1927 | if (err < 0) |
1928 | return err; | |
1da177e4 LT |
1929 | |
1930 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1931 | hw->rate_min, hw->rate_max); | |
8b90ca08 GL |
1932 | if (err < 0) |
1933 | return err; | |
1da177e4 LT |
1934 | |
1935 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1936 | hw->period_bytes_min, hw->period_bytes_max); | |
8b90ca08 GL |
1937 | if (err < 0) |
1938 | return err; | |
1da177e4 LT |
1939 | |
1940 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1941 | hw->periods_min, hw->periods_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_BUFFER_BYTES, | |
1946 | hw->period_bytes_min, hw->buffer_bytes_max); | |
7eaa943c TI |
1947 | if (err < 0) |
1948 | return err; | |
1da177e4 LT |
1949 | |
1950 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1951 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1952 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1953 | if (err < 0) | |
1954 | return err; | |
1955 | ||
1956 | /* FIXME: remove */ | |
1957 | if (runtime->dma_bytes) { | |
1958 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
7eaa943c TI |
1959 | if (err < 0) |
1960 | return -EINVAL; | |
1da177e4 LT |
1961 | } |
1962 | ||
1963 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
1964 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1965 | snd_pcm_hw_rule_rate, hw, | |
1966 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1967 | if (err < 0) | |
1968 | return err; | |
1969 | } | |
1970 | ||
1971 | /* FIXME: this belong to lowlevel */ | |
1da177e4 LT |
1972 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); |
1973 | ||
1974 | return 0; | |
1975 | } | |
1976 | ||
3bf75f9b | 1977 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 1978 | { |
1da177e4 | 1979 | snd_pcm_unlink(substream); |
3bf75f9b TI |
1980 | } |
1981 | ||
1982 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
1983 | { | |
0df63e44 TI |
1984 | substream->ref_count--; |
1985 | if (substream->ref_count > 0) | |
1986 | return; | |
1987 | ||
3bf75f9b | 1988 | snd_pcm_drop(substream); |
3bf75f9b | 1989 | if (substream->hw_opened) { |
1da177e4 LT |
1990 | if (substream->ops->hw_free != NULL) |
1991 | substream->ops->hw_free(substream); | |
1992 | substream->ops->close(substream); | |
3bf75f9b | 1993 | substream->hw_opened = 0; |
1da177e4 | 1994 | } |
8699a0b6 TI |
1995 | if (pm_qos_request_active(&substream->latency_pm_qos_req)) |
1996 | pm_qos_remove_request(&substream->latency_pm_qos_req); | |
1576274d TI |
1997 | if (substream->pcm_release) { |
1998 | substream->pcm_release(substream); | |
1999 | substream->pcm_release = NULL; | |
2000 | } | |
3bf75f9b TI |
2001 | snd_pcm_detach_substream(substream); |
2002 | } | |
2003 | ||
e88e8ae6 TI |
2004 | EXPORT_SYMBOL(snd_pcm_release_substream); |
2005 | ||
3bf75f9b TI |
2006 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
2007 | struct file *file, | |
2008 | struct snd_pcm_substream **rsubstream) | |
2009 | { | |
2010 | struct snd_pcm_substream *substream; | |
2011 | int err; | |
2012 | ||
2013 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2014 | if (err < 0) | |
2015 | return err; | |
0df63e44 TI |
2016 | if (substream->ref_count > 1) { |
2017 | *rsubstream = substream; | |
2018 | return 0; | |
2019 | } | |
2020 | ||
3bf75f9b TI |
2021 | err = snd_pcm_hw_constraints_init(substream); |
2022 | if (err < 0) { | |
2023 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2024 | goto error; | |
2025 | } | |
2026 | ||
2027 | if ((err = substream->ops->open(substream)) < 0) | |
2028 | goto error; | |
2029 | ||
2030 | substream->hw_opened = 1; | |
2031 | ||
2032 | err = snd_pcm_hw_constraints_complete(substream); | |
2033 | if (err < 0) { | |
2034 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2035 | goto error; | |
2036 | } | |
2037 | ||
2038 | *rsubstream = substream; | |
1da177e4 | 2039 | return 0; |
3bf75f9b TI |
2040 | |
2041 | error: | |
2042 | snd_pcm_release_substream(substream); | |
2043 | return err; | |
1da177e4 LT |
2044 | } |
2045 | ||
e88e8ae6 TI |
2046 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2047 | ||
1da177e4 | 2048 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2049 | struct snd_pcm *pcm, |
1da177e4 | 2050 | int stream, |
877211f5 | 2051 | struct snd_pcm_file **rpcm_file) |
1da177e4 | 2052 | { |
877211f5 TI |
2053 | struct snd_pcm_file *pcm_file; |
2054 | struct snd_pcm_substream *substream; | |
2055 | struct snd_pcm_str *str; | |
3bf75f9b | 2056 | int err; |
1da177e4 | 2057 | |
7eaa943c TI |
2058 | if (rpcm_file) |
2059 | *rpcm_file = NULL; | |
1da177e4 | 2060 | |
3bf75f9b TI |
2061 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2062 | if (err < 0) | |
2063 | return err; | |
2064 | ||
548a648b TI |
2065 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
2066 | if (pcm_file == NULL) { | |
2067 | snd_pcm_release_substream(substream); | |
2068 | return -ENOMEM; | |
2069 | } | |
2070 | pcm_file->substream = substream; | |
2071 | if (substream->ref_count == 1) { | |
0df63e44 TI |
2072 | str = substream->pstr; |
2073 | substream->file = pcm_file; | |
2074 | substream->pcm_release = pcm_release_private; | |
1da177e4 | 2075 | } |
1da177e4 | 2076 | file->private_data = pcm_file; |
7eaa943c TI |
2077 | if (rpcm_file) |
2078 | *rpcm_file = pcm_file; | |
1da177e4 LT |
2079 | return 0; |
2080 | } | |
2081 | ||
f87135f5 CL |
2082 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2083 | { | |
2084 | struct snd_pcm *pcm; | |
02f4865f TI |
2085 | int err = nonseekable_open(inode, file); |
2086 | if (err < 0) | |
2087 | return err; | |
f87135f5 CL |
2088 | pcm = snd_lookup_minor_data(iminor(inode), |
2089 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2090 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2091 | } | |
2092 | ||
2093 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2094 | { |
877211f5 | 2095 | struct snd_pcm *pcm; |
02f4865f TI |
2096 | int err = nonseekable_open(inode, file); |
2097 | if (err < 0) | |
2098 | return err; | |
f87135f5 CL |
2099 | pcm = snd_lookup_minor_data(iminor(inode), |
2100 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2101 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2102 | } | |
2103 | ||
2104 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2105 | { | |
2106 | int err; | |
877211f5 | 2107 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2108 | wait_queue_t wait; |
2109 | ||
1da177e4 LT |
2110 | if (pcm == NULL) { |
2111 | err = -ENODEV; | |
2112 | goto __error1; | |
2113 | } | |
2114 | err = snd_card_file_add(pcm->card, file); | |
2115 | if (err < 0) | |
2116 | goto __error1; | |
2117 | if (!try_module_get(pcm->card->module)) { | |
2118 | err = -EFAULT; | |
2119 | goto __error2; | |
2120 | } | |
2121 | init_waitqueue_entry(&wait, current); | |
2122 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2123 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2124 | while (1) { |
f87135f5 | 2125 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2126 | if (err >= 0) |
2127 | break; | |
2128 | if (err == -EAGAIN) { | |
2129 | if (file->f_flags & O_NONBLOCK) { | |
2130 | err = -EBUSY; | |
2131 | break; | |
2132 | } | |
2133 | } else | |
2134 | break; | |
2135 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2136 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2137 | schedule(); |
1a60d4c5 | 2138 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2139 | if (signal_pending(current)) { |
2140 | err = -ERESTARTSYS; | |
2141 | break; | |
2142 | } | |
2143 | } | |
2144 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2145 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2146 | if (err < 0) |
2147 | goto __error; | |
2148 | return err; | |
2149 | ||
2150 | __error: | |
2151 | module_put(pcm->card->module); | |
2152 | __error2: | |
2153 | snd_card_file_remove(pcm->card, file); | |
2154 | __error1: | |
2155 | return err; | |
2156 | } | |
2157 | ||
2158 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2159 | { | |
877211f5 TI |
2160 | struct snd_pcm *pcm; |
2161 | struct snd_pcm_substream *substream; | |
2162 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2163 | |
2164 | pcm_file = file->private_data; | |
2165 | substream = pcm_file->substream; | |
7eaa943c TI |
2166 | if (snd_BUG_ON(!substream)) |
2167 | return -ENXIO; | |
1da177e4 | 2168 | pcm = substream->pcm; |
1a60d4c5 | 2169 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2170 | snd_pcm_release_substream(substream); |
548a648b | 2171 | kfree(pcm_file); |
1a60d4c5 | 2172 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2173 | wake_up(&pcm->open_wait); |
2174 | module_put(pcm->card->module); | |
2175 | snd_card_file_remove(pcm->card, file); | |
2176 | return 0; | |
2177 | } | |
2178 | ||
877211f5 TI |
2179 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2180 | snd_pcm_uframes_t frames) | |
1da177e4 | 2181 | { |
877211f5 | 2182 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2183 | snd_pcm_sframes_t appl_ptr; |
2184 | snd_pcm_sframes_t ret; | |
2185 | snd_pcm_sframes_t hw_avail; | |
2186 | ||
2187 | if (frames == 0) | |
2188 | return 0; | |
2189 | ||
2190 | snd_pcm_stream_lock_irq(substream); | |
2191 | switch (runtime->status->state) { | |
2192 | case SNDRV_PCM_STATE_PREPARED: | |
2193 | break; | |
2194 | case SNDRV_PCM_STATE_DRAINING: | |
2195 | case SNDRV_PCM_STATE_RUNNING: | |
2196 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2197 | break; | |
2198 | /* Fall through */ | |
2199 | case SNDRV_PCM_STATE_XRUN: | |
2200 | ret = -EPIPE; | |
2201 | goto __end; | |
51840409 LR |
2202 | case SNDRV_PCM_STATE_SUSPENDED: |
2203 | ret = -ESTRPIPE; | |
2204 | goto __end; | |
1da177e4 LT |
2205 | default: |
2206 | ret = -EBADFD; | |
2207 | goto __end; | |
2208 | } | |
2209 | ||
2210 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2211 | if (hw_avail <= 0) { | |
2212 | ret = 0; | |
2213 | goto __end; | |
2214 | } | |
2215 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2216 | frames = hw_avail; | |
1da177e4 LT |
2217 | appl_ptr = runtime->control->appl_ptr - frames; |
2218 | if (appl_ptr < 0) | |
2219 | appl_ptr += runtime->boundary; | |
2220 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2221 | ret = frames; |
2222 | __end: | |
2223 | snd_pcm_stream_unlock_irq(substream); | |
2224 | return ret; | |
2225 | } | |
2226 | ||
877211f5 TI |
2227 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2228 | snd_pcm_uframes_t frames) | |
1da177e4 | 2229 | { |
877211f5 | 2230 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2231 | snd_pcm_sframes_t appl_ptr; |
2232 | snd_pcm_sframes_t ret; | |
2233 | snd_pcm_sframes_t hw_avail; | |
2234 | ||
2235 | if (frames == 0) | |
2236 | return 0; | |
2237 | ||
2238 | snd_pcm_stream_lock_irq(substream); | |
2239 | switch (runtime->status->state) { | |
2240 | case SNDRV_PCM_STATE_PREPARED: | |
2241 | case SNDRV_PCM_STATE_DRAINING: | |
2242 | break; | |
2243 | case SNDRV_PCM_STATE_RUNNING: | |
2244 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2245 | break; | |
2246 | /* Fall through */ | |
2247 | case SNDRV_PCM_STATE_XRUN: | |
2248 | ret = -EPIPE; | |
2249 | goto __end; | |
51840409 LR |
2250 | case SNDRV_PCM_STATE_SUSPENDED: |
2251 | ret = -ESTRPIPE; | |
2252 | goto __end; | |
1da177e4 LT |
2253 | default: |
2254 | ret = -EBADFD; | |
2255 | goto __end; | |
2256 | } | |
2257 | ||
2258 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2259 | if (hw_avail <= 0) { | |
2260 | ret = 0; | |
2261 | goto __end; | |
2262 | } | |
2263 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2264 | frames = hw_avail; | |
1da177e4 LT |
2265 | appl_ptr = runtime->control->appl_ptr - frames; |
2266 | if (appl_ptr < 0) | |
2267 | appl_ptr += runtime->boundary; | |
2268 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2269 | ret = frames; |
2270 | __end: | |
2271 | snd_pcm_stream_unlock_irq(substream); | |
2272 | return ret; | |
2273 | } | |
2274 | ||
877211f5 TI |
2275 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2276 | snd_pcm_uframes_t frames) | |
1da177e4 | 2277 | { |
877211f5 | 2278 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2279 | snd_pcm_sframes_t appl_ptr; |
2280 | snd_pcm_sframes_t ret; | |
2281 | snd_pcm_sframes_t avail; | |
2282 | ||
2283 | if (frames == 0) | |
2284 | return 0; | |
2285 | ||
2286 | snd_pcm_stream_lock_irq(substream); | |
2287 | switch (runtime->status->state) { | |
2288 | case SNDRV_PCM_STATE_PREPARED: | |
2289 | case SNDRV_PCM_STATE_PAUSED: | |
2290 | break; | |
2291 | case SNDRV_PCM_STATE_DRAINING: | |
2292 | case SNDRV_PCM_STATE_RUNNING: | |
2293 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2294 | break; | |
2295 | /* Fall through */ | |
2296 | case SNDRV_PCM_STATE_XRUN: | |
2297 | ret = -EPIPE; | |
2298 | goto __end; | |
51840409 LR |
2299 | case SNDRV_PCM_STATE_SUSPENDED: |
2300 | ret = -ESTRPIPE; | |
2301 | goto __end; | |
1da177e4 LT |
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; | |
51840409 LR |
2348 | case SNDRV_PCM_STATE_SUSPENDED: |
2349 | ret = -ESTRPIPE; | |
2350 | goto __end; | |
1da177e4 LT |
2351 | default: |
2352 | ret = -EBADFD; | |
2353 | goto __end; | |
2354 | } | |
2355 | ||
2356 | avail = snd_pcm_capture_avail(runtime); | |
2357 | if (avail <= 0) { | |
2358 | ret = 0; | |
2359 | goto __end; | |
2360 | } | |
2361 | if (frames > (snd_pcm_uframes_t)avail) | |
2362 | frames = avail; | |
1da177e4 LT |
2363 | appl_ptr = runtime->control->appl_ptr + frames; |
2364 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2365 | appl_ptr -= runtime->boundary; | |
2366 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2367 | ret = frames; |
2368 | __end: | |
2369 | snd_pcm_stream_unlock_irq(substream); | |
2370 | return ret; | |
2371 | } | |
2372 | ||
877211f5 | 2373 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2374 | { |
877211f5 | 2375 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2376 | int err; |
2377 | ||
2378 | snd_pcm_stream_lock_irq(substream); | |
2379 | switch (runtime->status->state) { | |
2380 | case SNDRV_PCM_STATE_DRAINING: | |
2381 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2382 | goto __badfd; | |
2383 | case SNDRV_PCM_STATE_RUNNING: | |
2384 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2385 | break; | |
2386 | /* Fall through */ | |
2387 | case SNDRV_PCM_STATE_PREPARED: | |
2388 | case SNDRV_PCM_STATE_SUSPENDED: | |
2389 | err = 0; | |
2390 | break; | |
2391 | case SNDRV_PCM_STATE_XRUN: | |
2392 | err = -EPIPE; | |
2393 | break; | |
2394 | default: | |
2395 | __badfd: | |
2396 | err = -EBADFD; | |
2397 | break; | |
2398 | } | |
2399 | snd_pcm_stream_unlock_irq(substream); | |
2400 | return err; | |
2401 | } | |
2402 | ||
877211f5 TI |
2403 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2404 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2405 | { |
877211f5 | 2406 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2407 | int err; |
2408 | snd_pcm_sframes_t n = 0; | |
2409 | ||
2410 | snd_pcm_stream_lock_irq(substream); | |
2411 | switch (runtime->status->state) { | |
2412 | case SNDRV_PCM_STATE_DRAINING: | |
2413 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2414 | goto __badfd; | |
2415 | case SNDRV_PCM_STATE_RUNNING: | |
2416 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2417 | break; | |
2418 | /* Fall through */ | |
2419 | case SNDRV_PCM_STATE_PREPARED: | |
2420 | case SNDRV_PCM_STATE_SUSPENDED: | |
2421 | err = 0; | |
2422 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2423 | n = snd_pcm_playback_hw_avail(runtime); | |
2424 | else | |
2425 | n = snd_pcm_capture_avail(runtime); | |
4bbe1ddf | 2426 | n += runtime->delay; |
1da177e4 LT |
2427 | break; |
2428 | case SNDRV_PCM_STATE_XRUN: | |
2429 | err = -EPIPE; | |
2430 | break; | |
2431 | default: | |
2432 | __badfd: | |
2433 | err = -EBADFD; | |
2434 | break; | |
2435 | } | |
2436 | snd_pcm_stream_unlock_irq(substream); | |
2437 | if (!err) | |
2438 | if (put_user(n, res)) | |
2439 | err = -EFAULT; | |
2440 | return err; | |
2441 | } | |
2442 | ||
877211f5 TI |
2443 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2444 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2445 | { |
877211f5 TI |
2446 | struct snd_pcm_runtime *runtime = substream->runtime; |
2447 | struct snd_pcm_sync_ptr sync_ptr; | |
2448 | volatile struct snd_pcm_mmap_status *status; | |
2449 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2450 | int err; |
2451 | ||
2452 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2453 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2454 | return -EFAULT; | |
877211f5 | 2455 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2456 | return -EFAULT; |
2457 | status = runtime->status; | |
2458 | control = runtime->control; | |
2459 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2460 | err = snd_pcm_hwsync(substream); | |
2461 | if (err < 0) | |
2462 | return err; | |
2463 | } | |
2464 | snd_pcm_stream_lock_irq(substream); | |
2465 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2466 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2467 | else | |
2468 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2469 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2470 | control->avail_min = sync_ptr.c.control.avail_min; | |
2471 | else | |
2472 | sync_ptr.c.control.avail_min = control->avail_min; | |
2473 | sync_ptr.s.status.state = status->state; | |
2474 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2475 | sync_ptr.s.status.tstamp = status->tstamp; | |
2476 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2477 | snd_pcm_stream_unlock_irq(substream); | |
2478 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2479 | return -EFAULT; | |
2480 | return 0; | |
2481 | } | |
b751eef1 JK |
2482 | |
2483 | static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg) | |
2484 | { | |
2485 | struct snd_pcm_runtime *runtime = substream->runtime; | |
2486 | int arg; | |
2487 | ||
2488 | if (get_user(arg, _arg)) | |
2489 | return -EFAULT; | |
2490 | if (arg < 0 || arg > SNDRV_PCM_TSTAMP_TYPE_LAST) | |
2491 | return -EINVAL; | |
2492 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY; | |
2493 | if (arg == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC) | |
2494 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC; | |
2495 | return 0; | |
2496 | } | |
1da177e4 | 2497 | |
0df63e44 TI |
2498 | static int snd_pcm_common_ioctl1(struct file *file, |
2499 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2500 | unsigned int cmd, void __user *arg) |
2501 | { | |
1da177e4 LT |
2502 | switch (cmd) { |
2503 | case SNDRV_PCM_IOCTL_PVERSION: | |
2504 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2505 | case SNDRV_PCM_IOCTL_INFO: | |
2506 | return snd_pcm_info_user(substream, arg); | |
28e9e473 JK |
2507 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
2508 | return 0; | |
b751eef1 JK |
2509 | case SNDRV_PCM_IOCTL_TTSTAMP: |
2510 | return snd_pcm_tstamp(substream, arg); | |
1da177e4 LT |
2511 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2512 | return snd_pcm_hw_refine_user(substream, arg); | |
2513 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2514 | return snd_pcm_hw_params_user(substream, arg); | |
2515 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2516 | return snd_pcm_hw_free(substream); | |
2517 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2518 | return snd_pcm_sw_params_user(substream, arg); | |
2519 | case SNDRV_PCM_IOCTL_STATUS: | |
2520 | return snd_pcm_status_user(substream, arg); | |
2521 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2522 | return snd_pcm_channel_info_user(substream, arg); | |
2523 | case SNDRV_PCM_IOCTL_PREPARE: | |
0df63e44 | 2524 | return snd_pcm_prepare(substream, file); |
1da177e4 LT |
2525 | case SNDRV_PCM_IOCTL_RESET: |
2526 | return snd_pcm_reset(substream); | |
2527 | case SNDRV_PCM_IOCTL_START: | |
2528 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2529 | case SNDRV_PCM_IOCTL_LINK: | |
2530 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2531 | case SNDRV_PCM_IOCTL_UNLINK: | |
2532 | return snd_pcm_unlink(substream); | |
2533 | case SNDRV_PCM_IOCTL_RESUME: | |
2534 | return snd_pcm_resume(substream); | |
2535 | case SNDRV_PCM_IOCTL_XRUN: | |
2536 | return snd_pcm_xrun(substream); | |
2537 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2538 | return snd_pcm_hwsync(substream); | |
2539 | case SNDRV_PCM_IOCTL_DELAY: | |
2540 | return snd_pcm_delay(substream, arg); | |
2541 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2542 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2543 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2544 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2545 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2546 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2547 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2548 | #endif |
1da177e4 | 2549 | case SNDRV_PCM_IOCTL_DRAIN: |
4cdc115f | 2550 | return snd_pcm_drain(substream, file); |
1da177e4 LT |
2551 | case SNDRV_PCM_IOCTL_DROP: |
2552 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2553 | case SNDRV_PCM_IOCTL_PAUSE: |
2554 | { | |
2555 | int res; | |
2556 | snd_pcm_stream_lock_irq(substream); | |
2557 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2558 | snd_pcm_stream_unlock_irq(substream); | |
2559 | return res; | |
2560 | } | |
1da177e4 LT |
2561 | } |
2562 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2563 | return -ENOTTY; | |
2564 | } | |
2565 | ||
0df63e44 TI |
2566 | static int snd_pcm_playback_ioctl1(struct file *file, |
2567 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2568 | unsigned int cmd, void __user *arg) |
2569 | { | |
7eaa943c TI |
2570 | if (snd_BUG_ON(!substream)) |
2571 | return -ENXIO; | |
2572 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
2573 | return -EINVAL; | |
1da177e4 LT |
2574 | switch (cmd) { |
2575 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2576 | { | |
877211f5 TI |
2577 | struct snd_xferi xferi; |
2578 | struct snd_xferi __user *_xferi = arg; | |
2579 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2580 | snd_pcm_sframes_t result; |
2581 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2582 | return -EBADFD; | |
2583 | if (put_user(0, &_xferi->result)) | |
2584 | return -EFAULT; | |
2585 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2586 | return -EFAULT; | |
2587 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2588 | __put_user(result, &_xferi->result); | |
2589 | return result < 0 ? result : 0; | |
2590 | } | |
2591 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2592 | { | |
877211f5 TI |
2593 | struct snd_xfern xfern; |
2594 | struct snd_xfern __user *_xfern = arg; | |
2595 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2596 | void __user **bufs; |
2597 | snd_pcm_sframes_t result; | |
2598 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2599 | return -EBADFD; | |
2600 | if (runtime->channels > 128) | |
2601 | return -EINVAL; | |
2602 | if (put_user(0, &_xfern->result)) | |
2603 | return -EFAULT; | |
2604 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2605 | return -EFAULT; | |
ef44a1ec LZ |
2606 | |
2607 | bufs = memdup_user(xfern.bufs, | |
2608 | sizeof(void *) * runtime->channels); | |
2609 | if (IS_ERR(bufs)) | |
2610 | return PTR_ERR(bufs); | |
1da177e4 LT |
2611 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); |
2612 | kfree(bufs); | |
2613 | __put_user(result, &_xfern->result); | |
2614 | return result < 0 ? result : 0; | |
2615 | } | |
2616 | case SNDRV_PCM_IOCTL_REWIND: | |
2617 | { | |
2618 | snd_pcm_uframes_t frames; | |
2619 | snd_pcm_uframes_t __user *_frames = arg; | |
2620 | snd_pcm_sframes_t result; | |
2621 | if (get_user(frames, _frames)) | |
2622 | return -EFAULT; | |
2623 | if (put_user(0, _frames)) | |
2624 | return -EFAULT; | |
2625 | result = snd_pcm_playback_rewind(substream, frames); | |
2626 | __put_user(result, _frames); | |
2627 | return result < 0 ? result : 0; | |
2628 | } | |
2629 | case SNDRV_PCM_IOCTL_FORWARD: | |
2630 | { | |
2631 | snd_pcm_uframes_t frames; | |
2632 | snd_pcm_uframes_t __user *_frames = arg; | |
2633 | snd_pcm_sframes_t result; | |
2634 | if (get_user(frames, _frames)) | |
2635 | return -EFAULT; | |
2636 | if (put_user(0, _frames)) | |
2637 | return -EFAULT; | |
2638 | result = snd_pcm_playback_forward(substream, frames); | |
2639 | __put_user(result, _frames); | |
2640 | return result < 0 ? result : 0; | |
2641 | } | |
1da177e4 | 2642 | } |
0df63e44 | 2643 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2644 | } |
2645 | ||
0df63e44 TI |
2646 | static int snd_pcm_capture_ioctl1(struct file *file, |
2647 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2648 | unsigned int cmd, void __user *arg) |
2649 | { | |
7eaa943c TI |
2650 | if (snd_BUG_ON(!substream)) |
2651 | return -ENXIO; | |
2652 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE)) | |
2653 | return -EINVAL; | |
1da177e4 LT |
2654 | switch (cmd) { |
2655 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2656 | { | |
877211f5 TI |
2657 | struct snd_xferi xferi; |
2658 | struct snd_xferi __user *_xferi = arg; | |
2659 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2660 | snd_pcm_sframes_t result; |
2661 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2662 | return -EBADFD; | |
2663 | if (put_user(0, &_xferi->result)) | |
2664 | return -EFAULT; | |
2665 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2666 | return -EFAULT; | |
2667 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2668 | __put_user(result, &_xferi->result); | |
2669 | return result < 0 ? result : 0; | |
2670 | } | |
2671 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2672 | { | |
877211f5 TI |
2673 | struct snd_xfern xfern; |
2674 | struct snd_xfern __user *_xfern = arg; | |
2675 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2676 | void *bufs; |
2677 | snd_pcm_sframes_t result; | |
2678 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2679 | return -EBADFD; | |
2680 | if (runtime->channels > 128) | |
2681 | return -EINVAL; | |
2682 | if (put_user(0, &_xfern->result)) | |
2683 | return -EFAULT; | |
2684 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2685 | return -EFAULT; | |
ef44a1ec LZ |
2686 | |
2687 | bufs = memdup_user(xfern.bufs, | |
2688 | sizeof(void *) * runtime->channels); | |
2689 | if (IS_ERR(bufs)) | |
2690 | return PTR_ERR(bufs); | |
1da177e4 LT |
2691 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); |
2692 | kfree(bufs); | |
2693 | __put_user(result, &_xfern->result); | |
2694 | return result < 0 ? result : 0; | |
2695 | } | |
2696 | case SNDRV_PCM_IOCTL_REWIND: | |
2697 | { | |
2698 | snd_pcm_uframes_t frames; | |
2699 | snd_pcm_uframes_t __user *_frames = arg; | |
2700 | snd_pcm_sframes_t result; | |
2701 | if (get_user(frames, _frames)) | |
2702 | return -EFAULT; | |
2703 | if (put_user(0, _frames)) | |
2704 | return -EFAULT; | |
2705 | result = snd_pcm_capture_rewind(substream, frames); | |
2706 | __put_user(result, _frames); | |
2707 | return result < 0 ? result : 0; | |
2708 | } | |
2709 | case SNDRV_PCM_IOCTL_FORWARD: | |
2710 | { | |
2711 | snd_pcm_uframes_t frames; | |
2712 | snd_pcm_uframes_t __user *_frames = arg; | |
2713 | snd_pcm_sframes_t result; | |
2714 | if (get_user(frames, _frames)) | |
2715 | return -EFAULT; | |
2716 | if (put_user(0, _frames)) | |
2717 | return -EFAULT; | |
2718 | result = snd_pcm_capture_forward(substream, frames); | |
2719 | __put_user(result, _frames); | |
2720 | return result < 0 ? result : 0; | |
2721 | } | |
2722 | } | |
0df63e44 | 2723 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2724 | } |
2725 | ||
877211f5 TI |
2726 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2727 | unsigned long arg) | |
1da177e4 | 2728 | { |
877211f5 | 2729 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2730 | |
2731 | pcm_file = file->private_data; | |
2732 | ||
2733 | if (((cmd >> 8) & 0xff) != 'A') | |
2734 | return -ENOTTY; | |
2735 | ||
0df63e44 TI |
2736 | return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd, |
2737 | (void __user *)arg); | |
1da177e4 LT |
2738 | } |
2739 | ||
877211f5 TI |
2740 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2741 | unsigned long arg) | |
1da177e4 | 2742 | { |
877211f5 | 2743 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2744 | |
2745 | pcm_file = file->private_data; | |
2746 | ||
2747 | if (((cmd >> 8) & 0xff) != 'A') | |
2748 | return -ENOTTY; | |
2749 | ||
0df63e44 TI |
2750 | return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd, |
2751 | (void __user *)arg); | |
1da177e4 LT |
2752 | } |
2753 | ||
bf1bbb5a TI |
2754 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2755 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2756 | { |
2757 | mm_segment_t fs; | |
2758 | int result; | |
2759 | ||
2760 | fs = snd_enter_user(); | |
1da177e4 LT |
2761 | switch (substream->stream) { |
2762 | case SNDRV_PCM_STREAM_PLAYBACK: | |
0df63e44 TI |
2763 | result = snd_pcm_playback_ioctl1(NULL, substream, cmd, |
2764 | (void __user *)arg); | |
bf1bbb5a | 2765 | break; |
1da177e4 | 2766 | case SNDRV_PCM_STREAM_CAPTURE: |
0df63e44 TI |
2767 | result = snd_pcm_capture_ioctl1(NULL, substream, cmd, |
2768 | (void __user *)arg); | |
bf1bbb5a | 2769 | break; |
1da177e4 | 2770 | default: |
bf1bbb5a TI |
2771 | result = -EINVAL; |
2772 | break; | |
1da177e4 | 2773 | } |
bf1bbb5a TI |
2774 | snd_leave_user(fs); |
2775 | return result; | |
1da177e4 LT |
2776 | } |
2777 | ||
e88e8ae6 TI |
2778 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2779 | ||
877211f5 TI |
2780 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2781 | loff_t * offset) | |
1da177e4 | 2782 | { |
877211f5 TI |
2783 | struct snd_pcm_file *pcm_file; |
2784 | struct snd_pcm_substream *substream; | |
2785 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2786 | snd_pcm_sframes_t result; |
2787 | ||
2788 | pcm_file = file->private_data; | |
2789 | substream = pcm_file->substream; | |
7eaa943c TI |
2790 | if (PCM_RUNTIME_CHECK(substream)) |
2791 | return -ENXIO; | |
1da177e4 LT |
2792 | runtime = substream->runtime; |
2793 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2794 | return -EBADFD; | |
2795 | if (!frame_aligned(runtime, count)) | |
2796 | return -EINVAL; | |
2797 | count = bytes_to_frames(runtime, count); | |
2798 | result = snd_pcm_lib_read(substream, buf, count); | |
2799 | if (result > 0) | |
2800 | result = frames_to_bytes(runtime, result); | |
2801 | return result; | |
2802 | } | |
2803 | ||
877211f5 TI |
2804 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2805 | size_t count, loff_t * offset) | |
1da177e4 | 2806 | { |
877211f5 TI |
2807 | struct snd_pcm_file *pcm_file; |
2808 | struct snd_pcm_substream *substream; | |
2809 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2810 | snd_pcm_sframes_t result; |
2811 | ||
2812 | pcm_file = file->private_data; | |
2813 | substream = pcm_file->substream; | |
7eaa943c TI |
2814 | if (PCM_RUNTIME_CHECK(substream)) |
2815 | return -ENXIO; | |
1da177e4 | 2816 | runtime = substream->runtime; |
7eaa943c TI |
2817 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2818 | return -EBADFD; | |
2819 | if (!frame_aligned(runtime, count)) | |
2820 | return -EINVAL; | |
1da177e4 LT |
2821 | count = bytes_to_frames(runtime, count); |
2822 | result = snd_pcm_lib_write(substream, buf, count); | |
2823 | if (result > 0) | |
2824 | result = frames_to_bytes(runtime, result); | |
1da177e4 LT |
2825 | return result; |
2826 | } | |
2827 | ||
ee0b3e67 BP |
2828 | static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov, |
2829 | unsigned long nr_segs, loff_t pos) | |
1da177e4 LT |
2830 | |
2831 | { | |
877211f5 TI |
2832 | struct snd_pcm_file *pcm_file; |
2833 | struct snd_pcm_substream *substream; | |
2834 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2835 | snd_pcm_sframes_t result; |
2836 | unsigned long i; | |
2837 | void __user **bufs; | |
2838 | snd_pcm_uframes_t frames; | |
2839 | ||
ee0b3e67 | 2840 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2841 | substream = pcm_file->substream; |
7eaa943c TI |
2842 | if (PCM_RUNTIME_CHECK(substream)) |
2843 | return -ENXIO; | |
1da177e4 LT |
2844 | runtime = substream->runtime; |
2845 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2846 | return -EBADFD; | |
ee0b3e67 | 2847 | if (nr_segs > 1024 || nr_segs != runtime->channels) |
1da177e4 | 2848 | return -EINVAL; |
ee0b3e67 | 2849 | if (!frame_aligned(runtime, iov->iov_len)) |
1da177e4 | 2850 | return -EINVAL; |
ee0b3e67 BP |
2851 | frames = bytes_to_samples(runtime, iov->iov_len); |
2852 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2853 | if (bufs == NULL) |
2854 | return -ENOMEM; | |
ee0b3e67 BP |
2855 | for (i = 0; i < nr_segs; ++i) |
2856 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2857 | result = snd_pcm_lib_readv(substream, bufs, frames); |
2858 | if (result > 0) | |
2859 | result = frames_to_bytes(runtime, result); | |
2860 | kfree(bufs); | |
2861 | return result; | |
2862 | } | |
2863 | ||
ee0b3e67 BP |
2864 | static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov, |
2865 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 2866 | { |
877211f5 TI |
2867 | struct snd_pcm_file *pcm_file; |
2868 | struct snd_pcm_substream *substream; | |
2869 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2870 | snd_pcm_sframes_t result; |
2871 | unsigned long i; | |
2872 | void __user **bufs; | |
2873 | snd_pcm_uframes_t frames; | |
2874 | ||
ee0b3e67 | 2875 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2876 | substream = pcm_file->substream; |
7eaa943c TI |
2877 | if (PCM_RUNTIME_CHECK(substream)) |
2878 | return -ENXIO; | |
1da177e4 | 2879 | runtime = substream->runtime; |
7eaa943c TI |
2880 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2881 | return -EBADFD; | |
ee0b3e67 | 2882 | if (nr_segs > 128 || nr_segs != runtime->channels || |
7eaa943c TI |
2883 | !frame_aligned(runtime, iov->iov_len)) |
2884 | return -EINVAL; | |
ee0b3e67 BP |
2885 | frames = bytes_to_samples(runtime, iov->iov_len); |
2886 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2887 | if (bufs == NULL) |
2888 | return -ENOMEM; | |
ee0b3e67 BP |
2889 | for (i = 0; i < nr_segs; ++i) |
2890 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2891 | result = snd_pcm_lib_writev(substream, bufs, frames); |
2892 | if (result > 0) | |
2893 | result = frames_to_bytes(runtime, result); | |
2894 | kfree(bufs); | |
1da177e4 LT |
2895 | return result; |
2896 | } | |
2897 | ||
2898 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2899 | { | |
877211f5 TI |
2900 | struct snd_pcm_file *pcm_file; |
2901 | struct snd_pcm_substream *substream; | |
2902 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2903 | unsigned int mask; |
2904 | snd_pcm_uframes_t avail; | |
2905 | ||
2906 | pcm_file = file->private_data; | |
2907 | ||
2908 | substream = pcm_file->substream; | |
7eaa943c TI |
2909 | if (PCM_RUNTIME_CHECK(substream)) |
2910 | return -ENXIO; | |
1da177e4 LT |
2911 | runtime = substream->runtime; |
2912 | ||
2913 | poll_wait(file, &runtime->sleep, wait); | |
2914 | ||
2915 | snd_pcm_stream_lock_irq(substream); | |
2916 | avail = snd_pcm_playback_avail(runtime); | |
2917 | switch (runtime->status->state) { | |
2918 | case SNDRV_PCM_STATE_RUNNING: | |
2919 | case SNDRV_PCM_STATE_PREPARED: | |
2920 | case SNDRV_PCM_STATE_PAUSED: | |
2921 | if (avail >= runtime->control->avail_min) { | |
2922 | mask = POLLOUT | POLLWRNORM; | |
2923 | break; | |
2924 | } | |
2925 | /* Fall through */ | |
2926 | case SNDRV_PCM_STATE_DRAINING: | |
2927 | mask = 0; | |
2928 | break; | |
2929 | default: | |
2930 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2931 | break; | |
2932 | } | |
2933 | snd_pcm_stream_unlock_irq(substream); | |
2934 | return mask; | |
2935 | } | |
2936 | ||
2937 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2938 | { | |
877211f5 TI |
2939 | struct snd_pcm_file *pcm_file; |
2940 | struct snd_pcm_substream *substream; | |
2941 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2942 | unsigned int mask; |
2943 | snd_pcm_uframes_t avail; | |
2944 | ||
2945 | pcm_file = file->private_data; | |
2946 | ||
2947 | substream = pcm_file->substream; | |
7eaa943c TI |
2948 | if (PCM_RUNTIME_CHECK(substream)) |
2949 | return -ENXIO; | |
1da177e4 LT |
2950 | runtime = substream->runtime; |
2951 | ||
2952 | poll_wait(file, &runtime->sleep, wait); | |
2953 | ||
2954 | snd_pcm_stream_lock_irq(substream); | |
2955 | avail = snd_pcm_capture_avail(runtime); | |
2956 | switch (runtime->status->state) { | |
2957 | case SNDRV_PCM_STATE_RUNNING: | |
2958 | case SNDRV_PCM_STATE_PREPARED: | |
2959 | case SNDRV_PCM_STATE_PAUSED: | |
2960 | if (avail >= runtime->control->avail_min) { | |
2961 | mask = POLLIN | POLLRDNORM; | |
2962 | break; | |
2963 | } | |
2964 | mask = 0; | |
2965 | break; | |
2966 | case SNDRV_PCM_STATE_DRAINING: | |
2967 | if (avail > 0) { | |
2968 | mask = POLLIN | POLLRDNORM; | |
2969 | break; | |
2970 | } | |
2971 | /* Fall through */ | |
2972 | default: | |
2973 | mask = POLLIN | POLLRDNORM | POLLERR; | |
2974 | break; | |
2975 | } | |
2976 | snd_pcm_stream_unlock_irq(substream); | |
2977 | return mask; | |
2978 | } | |
2979 | ||
2980 | /* | |
2981 | * mmap support | |
2982 | */ | |
2983 | ||
2984 | /* | |
2985 | * Only on coherent architectures, we can mmap the status and the control records | |
2986 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
2987 | */ | |
2988 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
2989 | /* | |
2990 | * mmap status record | |
2991 | */ | |
3ad5afcd NP |
2992 | static int snd_pcm_mmap_status_fault(struct vm_area_struct *area, |
2993 | struct vm_fault *vmf) | |
1da177e4 | 2994 | { |
877211f5 TI |
2995 | struct snd_pcm_substream *substream = area->vm_private_data; |
2996 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2997 | |
2998 | if (substream == NULL) | |
3ad5afcd | 2999 | return VM_FAULT_SIGBUS; |
1da177e4 | 3000 | runtime = substream->runtime; |
3ad5afcd NP |
3001 | vmf->page = virt_to_page(runtime->status); |
3002 | get_page(vmf->page); | |
3003 | return 0; | |
1da177e4 LT |
3004 | } |
3005 | ||
f0f37e2f | 3006 | static const struct vm_operations_struct snd_pcm_vm_ops_status = |
1da177e4 | 3007 | { |
3ad5afcd | 3008 | .fault = snd_pcm_mmap_status_fault, |
1da177e4 LT |
3009 | }; |
3010 | ||
877211f5 | 3011 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3012 | struct vm_area_struct *area) |
3013 | { | |
877211f5 | 3014 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3015 | long size; |
3016 | if (!(area->vm_flags & VM_READ)) | |
3017 | return -EINVAL; | |
3018 | runtime = substream->runtime; | |
1da177e4 | 3019 | size = area->vm_end - area->vm_start; |
877211f5 | 3020 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3021 | return -EINVAL; |
3022 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3023 | area->vm_private_data = substream; | |
3024 | area->vm_flags |= VM_RESERVED; | |
3025 | return 0; | |
3026 | } | |
3027 | ||
3028 | /* | |
3029 | * mmap control record | |
3030 | */ | |
3ad5afcd NP |
3031 | static int snd_pcm_mmap_control_fault(struct vm_area_struct *area, |
3032 | struct vm_fault *vmf) | |
1da177e4 | 3033 | { |
877211f5 TI |
3034 | struct snd_pcm_substream *substream = area->vm_private_data; |
3035 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3036 | |
3037 | if (substream == NULL) | |
3ad5afcd | 3038 | return VM_FAULT_SIGBUS; |
1da177e4 | 3039 | runtime = substream->runtime; |
3ad5afcd NP |
3040 | vmf->page = virt_to_page(runtime->control); |
3041 | get_page(vmf->page); | |
3042 | return 0; | |
1da177e4 LT |
3043 | } |
3044 | ||
f0f37e2f | 3045 | static const struct vm_operations_struct snd_pcm_vm_ops_control = |
1da177e4 | 3046 | { |
3ad5afcd | 3047 | .fault = snd_pcm_mmap_control_fault, |
1da177e4 LT |
3048 | }; |
3049 | ||
877211f5 | 3050 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3051 | struct vm_area_struct *area) |
3052 | { | |
877211f5 | 3053 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3054 | long size; |
3055 | if (!(area->vm_flags & VM_READ)) | |
3056 | return -EINVAL; | |
3057 | runtime = substream->runtime; | |
1da177e4 | 3058 | size = area->vm_end - area->vm_start; |
877211f5 | 3059 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3060 | return -EINVAL; |
3061 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3062 | area->vm_private_data = substream; | |
3063 | area->vm_flags |= VM_RESERVED; | |
3064 | return 0; | |
3065 | } | |
3066 | #else /* ! coherent mmap */ | |
3067 | /* | |
3068 | * don't support mmap for status and control records. | |
3069 | */ | |
877211f5 | 3070 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3071 | struct vm_area_struct *area) |
3072 | { | |
3073 | return -ENXIO; | |
3074 | } | |
877211f5 | 3075 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3076 | struct vm_area_struct *area) |
3077 | { | |
3078 | return -ENXIO; | |
3079 | } | |
3080 | #endif /* coherent mmap */ | |
3081 | ||
9eb4a067 TI |
3082 | static inline struct page * |
3083 | snd_pcm_default_page_ops(struct snd_pcm_substream *substream, unsigned long ofs) | |
3084 | { | |
3085 | void *vaddr = substream->runtime->dma_area + ofs; | |
66b6cfac TI |
3086 | #if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT) |
3087 | if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) | |
3088 | return virt_to_page(CAC_ADDR(vaddr)); | |
6985c887 TI |
3089 | #endif |
3090 | #if defined(CONFIG_PPC32) && defined(CONFIG_NOT_COHERENT_CACHE) | |
3091 | if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) { | |
3092 | dma_addr_t addr = substream->runtime->dma_addr + ofs; | |
3093 | addr -= get_dma_offset(substream->dma_buffer.dev.dev); | |
3094 | /* assume dma_handle set via pfn_to_phys() in | |
3095 | * mm/dma-noncoherent.c | |
3096 | */ | |
3097 | return pfn_to_page(addr >> PAGE_SHIFT); | |
3098 | } | |
66b6cfac | 3099 | #endif |
9eb4a067 TI |
3100 | return virt_to_page(vaddr); |
3101 | } | |
3102 | ||
1da177e4 | 3103 | /* |
3ad5afcd | 3104 | * fault callback for mmapping a RAM page |
1da177e4 | 3105 | */ |
3ad5afcd NP |
3106 | static int snd_pcm_mmap_data_fault(struct vm_area_struct *area, |
3107 | struct vm_fault *vmf) | |
1da177e4 | 3108 | { |
877211f5 TI |
3109 | struct snd_pcm_substream *substream = area->vm_private_data; |
3110 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3111 | unsigned long offset; |
3112 | struct page * page; | |
1da177e4 LT |
3113 | size_t dma_bytes; |
3114 | ||
3115 | if (substream == NULL) | |
3ad5afcd | 3116 | return VM_FAULT_SIGBUS; |
1da177e4 | 3117 | runtime = substream->runtime; |
3ad5afcd | 3118 | offset = vmf->pgoff << PAGE_SHIFT; |
1da177e4 LT |
3119 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
3120 | if (offset > dma_bytes - PAGE_SIZE) | |
3ad5afcd | 3121 | return VM_FAULT_SIGBUS; |
9eb4a067 | 3122 | if (substream->ops->page) |
1da177e4 | 3123 | page = substream->ops->page(substream, offset); |
9eb4a067 TI |
3124 | else |
3125 | page = snd_pcm_default_page_ops(substream, offset); | |
3126 | if (!page) | |
3127 | return VM_FAULT_SIGBUS; | |
b5810039 | 3128 | get_page(page); |
3ad5afcd NP |
3129 | vmf->page = page; |
3130 | return 0; | |
1da177e4 LT |
3131 | } |
3132 | ||
657b1989 TI |
3133 | static const struct vm_operations_struct snd_pcm_vm_ops_data = { |
3134 | .open = snd_pcm_mmap_data_open, | |
3135 | .close = snd_pcm_mmap_data_close, | |
3136 | }; | |
3137 | ||
3138 | static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = { | |
1da177e4 LT |
3139 | .open = snd_pcm_mmap_data_open, |
3140 | .close = snd_pcm_mmap_data_close, | |
3ad5afcd | 3141 | .fault = snd_pcm_mmap_data_fault, |
1da177e4 LT |
3142 | }; |
3143 | ||
657b1989 TI |
3144 | #ifndef ARCH_HAS_DMA_MMAP_COHERENT |
3145 | /* This should be defined / handled globally! */ | |
3146 | #ifdef CONFIG_ARM | |
3147 | #define ARCH_HAS_DMA_MMAP_COHERENT | |
3148 | #endif | |
3149 | #endif | |
3150 | ||
1da177e4 LT |
3151 | /* |
3152 | * mmap the DMA buffer on RAM | |
3153 | */ | |
877211f5 TI |
3154 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3155 | struct vm_area_struct *area) | |
1da177e4 | 3156 | { |
1da177e4 | 3157 | area->vm_flags |= VM_RESERVED; |
657b1989 TI |
3158 | #ifdef ARCH_HAS_DMA_MMAP_COHERENT |
3159 | if (!substream->ops->page && | |
3160 | substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) | |
3161 | return dma_mmap_coherent(substream->dma_buffer.dev.dev, | |
3162 | area, | |
3163 | substream->runtime->dma_area, | |
3164 | substream->runtime->dma_addr, | |
3165 | area->vm_end - area->vm_start); | |
9fe17b5d TI |
3166 | #elif defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT) |
3167 | if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV && | |
3168 | !plat_device_is_coherent(substream->dma_buffer.dev.dev)) | |
3169 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
657b1989 TI |
3170 | #endif /* ARCH_HAS_DMA_MMAP_COHERENT */ |
3171 | /* mmap with fault handler */ | |
3172 | area->vm_ops = &snd_pcm_vm_ops_data_fault; | |
1da177e4 LT |
3173 | return 0; |
3174 | } | |
3175 | ||
3176 | /* | |
3177 | * mmap the DMA buffer on I/O memory area | |
3178 | */ | |
3179 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
877211f5 TI |
3180 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3181 | struct vm_area_struct *area) | |
1da177e4 LT |
3182 | { |
3183 | long size; | |
3184 | unsigned long offset; | |
3185 | ||
1da177e4 | 3186 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); |
1da177e4 LT |
3187 | area->vm_flags |= VM_IO; |
3188 | size = area->vm_end - area->vm_start; | |
3189 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3190 | if (io_remap_pfn_range(area, area->vm_start, | |
3191 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3192 | size, area->vm_page_prot)) | |
3193 | return -EAGAIN; | |
1da177e4 LT |
3194 | return 0; |
3195 | } | |
e88e8ae6 TI |
3196 | |
3197 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3198 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3199 | ||
c32d977b TI |
3200 | /* mmap callback with pgprot_noncached */ |
3201 | int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream, | |
3202 | struct vm_area_struct *area) | |
3203 | { | |
3204 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3205 | return snd_pcm_default_mmap(substream, area); | |
3206 | } | |
3207 | EXPORT_SYMBOL(snd_pcm_lib_mmap_noncached); | |
3208 | ||
1da177e4 LT |
3209 | /* |
3210 | * mmap DMA buffer | |
3211 | */ | |
877211f5 | 3212 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3213 | struct vm_area_struct *area) |
3214 | { | |
877211f5 | 3215 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3216 | long size; |
3217 | unsigned long offset; | |
3218 | size_t dma_bytes; | |
657b1989 | 3219 | int err; |
1da177e4 LT |
3220 | |
3221 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3222 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3223 | return -EINVAL; | |
3224 | } else { | |
3225 | if (!(area->vm_flags & VM_READ)) | |
3226 | return -EINVAL; | |
3227 | } | |
3228 | runtime = substream->runtime; | |
1da177e4 LT |
3229 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
3230 | return -EBADFD; | |
3231 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3232 | return -ENXIO; | |
3233 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3234 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3235 | return -EINVAL; | |
3236 | size = area->vm_end - area->vm_start; | |
3237 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3238 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3239 | if ((size_t)size > dma_bytes) | |
3240 | return -EINVAL; | |
3241 | if (offset > dma_bytes - size) | |
3242 | return -EINVAL; | |
3243 | ||
657b1989 TI |
3244 | area->vm_ops = &snd_pcm_vm_ops_data; |
3245 | area->vm_private_data = substream; | |
1da177e4 | 3246 | if (substream->ops->mmap) |
657b1989 | 3247 | err = substream->ops->mmap(substream, area); |
1da177e4 | 3248 | else |
657b1989 TI |
3249 | err = snd_pcm_default_mmap(substream, area); |
3250 | if (!err) | |
3251 | atomic_inc(&substream->mmap_count); | |
3252 | return err; | |
1da177e4 LT |
3253 | } |
3254 | ||
e88e8ae6 TI |
3255 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3256 | ||
1da177e4 LT |
3257 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3258 | { | |
877211f5 TI |
3259 | struct snd_pcm_file * pcm_file; |
3260 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3261 | unsigned long offset; |
3262 | ||
3263 | pcm_file = file->private_data; | |
3264 | substream = pcm_file->substream; | |
7eaa943c TI |
3265 | if (PCM_RUNTIME_CHECK(substream)) |
3266 | return -ENXIO; | |
1da177e4 LT |
3267 | |
3268 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3269 | switch (offset) { | |
3270 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
548a648b | 3271 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3272 | return -ENXIO; |
3273 | return snd_pcm_mmap_status(substream, file, area); | |
3274 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
548a648b | 3275 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3276 | return -ENXIO; |
3277 | return snd_pcm_mmap_control(substream, file, area); | |
3278 | default: | |
3279 | return snd_pcm_mmap_data(substream, file, area); | |
3280 | } | |
3281 | return 0; | |
3282 | } | |
3283 | ||
3284 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3285 | { | |
877211f5 TI |
3286 | struct snd_pcm_file * pcm_file; |
3287 | struct snd_pcm_substream *substream; | |
3288 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3289 | |
3290 | pcm_file = file->private_data; | |
3291 | substream = pcm_file->substream; | |
7eaa943c | 3292 | if (PCM_RUNTIME_CHECK(substream)) |
d05468b7 | 3293 | return -ENXIO; |
1da177e4 | 3294 | runtime = substream->runtime; |
d05468b7 | 3295 | return fasync_helper(fd, file, on, &runtime->fasync); |
1da177e4 LT |
3296 | } |
3297 | ||
3298 | /* | |
3299 | * ioctl32 compat | |
3300 | */ | |
3301 | #ifdef CONFIG_COMPAT | |
3302 | #include "pcm_compat.c" | |
3303 | #else | |
3304 | #define snd_pcm_ioctl_compat NULL | |
3305 | #endif | |
3306 | ||
3307 | /* | |
3308 | * To be removed helpers to keep binary compatibility | |
3309 | */ | |
3310 | ||
59d48582 | 3311 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3312 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3313 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3314 | ||
877211f5 TI |
3315 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3316 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3317 | { |
3318 | unsigned int i; | |
3319 | ||
3320 | memset(params, 0, sizeof(*params)); | |
3321 | params->flags = oparams->flags; | |
3322 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3323 | params->masks[i].bits[0] = oparams->masks[i]; | |
3324 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3325 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3326 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3327 | params->info = oparams->info; | |
3328 | params->msbits = oparams->msbits; | |
3329 | params->rate_num = oparams->rate_num; | |
3330 | params->rate_den = oparams->rate_den; | |
3331 | params->fifo_size = oparams->fifo_size; | |
3332 | } | |
3333 | ||
877211f5 TI |
3334 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3335 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3336 | { |
3337 | unsigned int i; | |
3338 | ||
3339 | memset(oparams, 0, sizeof(*oparams)); | |
3340 | oparams->flags = params->flags; | |
3341 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3342 | oparams->masks[i] = params->masks[i].bits[0]; | |
3343 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3344 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3345 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3346 | oparams->info = params->info; | |
3347 | oparams->msbits = params->msbits; | |
3348 | oparams->rate_num = params->rate_num; | |
3349 | oparams->rate_den = params->rate_den; | |
3350 | oparams->fifo_size = params->fifo_size; | |
3351 | } | |
3352 | ||
877211f5 TI |
3353 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3354 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3355 | { |
877211f5 TI |
3356 | struct snd_pcm_hw_params *params; |
3357 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3358 | int err; |
3359 | ||
3360 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3361 | if (!params) |
3362 | return -ENOMEM; | |
1da177e4 | 3363 | |
ef44a1ec LZ |
3364 | oparams = memdup_user(_oparams, sizeof(*oparams)); |
3365 | if (IS_ERR(oparams)) { | |
3366 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3367 | goto out; |
3368 | } | |
3369 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3370 | err = snd_pcm_hw_refine(substream, params); | |
3371 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3372 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3373 | if (!err) | |
3374 | err = -EFAULT; | |
3375 | } | |
ef44a1ec LZ |
3376 | |
3377 | kfree(oparams); | |
1da177e4 LT |
3378 | out: |
3379 | kfree(params); | |
1da177e4 LT |
3380 | return err; |
3381 | } | |
3382 | ||
877211f5 TI |
3383 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3384 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3385 | { |
877211f5 TI |
3386 | struct snd_pcm_hw_params *params; |
3387 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3388 | int err; |
3389 | ||
3390 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3391 | if (!params) |
3392 | return -ENOMEM; | |
3393 | ||
3394 | oparams = memdup_user(_oparams, sizeof(*oparams)); | |
3395 | if (IS_ERR(oparams)) { | |
3396 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3397 | goto out; |
3398 | } | |
3399 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3400 | err = snd_pcm_hw_params(substream, params); | |
3401 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3402 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3403 | if (!err) | |
3404 | err = -EFAULT; | |
3405 | } | |
ef44a1ec LZ |
3406 | |
3407 | kfree(oparams); | |
1da177e4 LT |
3408 | out: |
3409 | kfree(params); | |
1da177e4 LT |
3410 | return err; |
3411 | } | |
59d48582 | 3412 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 | 3413 | |
7003609b | 3414 | #ifndef CONFIG_MMU |
55c63bd2 DG |
3415 | static unsigned long snd_pcm_get_unmapped_area(struct file *file, |
3416 | unsigned long addr, | |
3417 | unsigned long len, | |
3418 | unsigned long pgoff, | |
3419 | unsigned long flags) | |
3420 | { | |
3421 | struct snd_pcm_file *pcm_file = file->private_data; | |
3422 | struct snd_pcm_substream *substream = pcm_file->substream; | |
3423 | struct snd_pcm_runtime *runtime = substream->runtime; | |
3424 | unsigned long offset = pgoff << PAGE_SHIFT; | |
3425 | ||
3426 | switch (offset) { | |
3427 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
3428 | return (unsigned long)runtime->status; | |
3429 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
3430 | return (unsigned long)runtime->control; | |
3431 | default: | |
3432 | return (unsigned long)runtime->dma_area + offset; | |
3433 | } | |
7003609b CC |
3434 | } |
3435 | #else | |
55c63bd2 | 3436 | # define snd_pcm_get_unmapped_area NULL |
7003609b CC |
3437 | #endif |
3438 | ||
1da177e4 LT |
3439 | /* |
3440 | * Register section | |
3441 | */ | |
3442 | ||
9c2e08c5 | 3443 | const struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3444 | { |
2af677fc CL |
3445 | .owner = THIS_MODULE, |
3446 | .write = snd_pcm_write, | |
ee0b3e67 | 3447 | .aio_write = snd_pcm_aio_write, |
f87135f5 | 3448 | .open = snd_pcm_playback_open, |
2af677fc | 3449 | .release = snd_pcm_release, |
02f4865f | 3450 | .llseek = no_llseek, |
2af677fc CL |
3451 | .poll = snd_pcm_playback_poll, |
3452 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3453 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3454 | .mmap = snd_pcm_mmap, | |
3455 | .fasync = snd_pcm_fasync, | |
55c63bd2 | 3456 | .get_unmapped_area = snd_pcm_get_unmapped_area, |
1da177e4 LT |
3457 | }, |
3458 | { | |
2af677fc CL |
3459 | .owner = THIS_MODULE, |
3460 | .read = snd_pcm_read, | |
ee0b3e67 | 3461 | .aio_read = snd_pcm_aio_read, |
f87135f5 | 3462 | .open = snd_pcm_capture_open, |
2af677fc | 3463 | .release = snd_pcm_release, |
02f4865f | 3464 | .llseek = no_llseek, |
2af677fc CL |
3465 | .poll = snd_pcm_capture_poll, |
3466 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3467 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3468 | .mmap = snd_pcm_mmap, | |
3469 | .fasync = snd_pcm_fasync, | |
55c63bd2 | 3470 | .get_unmapped_area = snd_pcm_get_unmapped_area, |
1da177e4 LT |
3471 | } |
3472 | }; |