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> |
da155d5b | 23 | #include <linux/module.h> |
1da177e4 LT |
24 | #include <linux/file.h> |
25 | #include <linux/slab.h> | |
26 | #include <linux/time.h> | |
e8db0be1 | 27 | #include <linux/pm_qos.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 | |
47023ec7 | 145 | static const char * const snd_pcm_hw_param_names[] = { |
1da177e4 LT |
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 | ||
9b0573c0 TI |
372 | static void snd_pcm_set_state(struct snd_pcm_substream *substream, int state) |
373 | { | |
374 | snd_pcm_stream_lock_irq(substream); | |
375 | if (substream->runtime->status->state != SNDRV_PCM_STATE_DISCONNECTED) | |
376 | substream->runtime->status->state = state; | |
377 | snd_pcm_stream_unlock_irq(substream); | |
378 | } | |
379 | ||
877211f5 TI |
380 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
381 | struct snd_pcm_hw_params *params) | |
1da177e4 | 382 | { |
877211f5 | 383 | struct snd_pcm_runtime *runtime; |
9442e691 | 384 | int err, usecs; |
1da177e4 LT |
385 | unsigned int bits; |
386 | snd_pcm_uframes_t frames; | |
387 | ||
7eaa943c TI |
388 | if (PCM_RUNTIME_CHECK(substream)) |
389 | return -ENXIO; | |
1da177e4 | 390 | runtime = substream->runtime; |
1da177e4 LT |
391 | snd_pcm_stream_lock_irq(substream); |
392 | switch (runtime->status->state) { | |
393 | case SNDRV_PCM_STATE_OPEN: | |
394 | case SNDRV_PCM_STATE_SETUP: | |
395 | case SNDRV_PCM_STATE_PREPARED: | |
396 | break; | |
397 | default: | |
398 | snd_pcm_stream_unlock_irq(substream); | |
399 | return -EBADFD; | |
400 | } | |
401 | snd_pcm_stream_unlock_irq(substream); | |
402 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
403 | if (!substream->oss.oss) | |
404 | #endif | |
9c323fcb | 405 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
406 | return -EBADFD; |
407 | ||
408 | params->rmask = ~0U; | |
409 | err = snd_pcm_hw_refine(substream, params); | |
410 | if (err < 0) | |
411 | goto _error; | |
412 | ||
413 | err = snd_pcm_hw_params_choose(substream, params); | |
414 | if (err < 0) | |
415 | goto _error; | |
416 | ||
417 | if (substream->ops->hw_params != NULL) { | |
418 | err = substream->ops->hw_params(substream, params); | |
419 | if (err < 0) | |
420 | goto _error; | |
421 | } | |
422 | ||
423 | runtime->access = params_access(params); | |
424 | runtime->format = params_format(params); | |
425 | runtime->subformat = params_subformat(params); | |
426 | runtime->channels = params_channels(params); | |
427 | runtime->rate = params_rate(params); | |
428 | runtime->period_size = params_period_size(params); | |
429 | runtime->periods = params_periods(params); | |
430 | runtime->buffer_size = params_buffer_size(params); | |
1da177e4 LT |
431 | runtime->info = params->info; |
432 | runtime->rate_num = params->rate_num; | |
433 | runtime->rate_den = params->rate_den; | |
ab69a490 CL |
434 | runtime->no_period_wakeup = |
435 | (params->info & SNDRV_PCM_INFO_NO_PERIOD_WAKEUP) && | |
436 | (params->flags & SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP); | |
1da177e4 LT |
437 | |
438 | bits = snd_pcm_format_physical_width(runtime->format); | |
439 | runtime->sample_bits = bits; | |
440 | bits *= runtime->channels; | |
441 | runtime->frame_bits = bits; | |
442 | frames = 1; | |
443 | while (bits % 8 != 0) { | |
444 | bits *= 2; | |
445 | frames *= 2; | |
446 | } | |
447 | runtime->byte_align = bits / 8; | |
448 | runtime->min_align = frames; | |
449 | ||
450 | /* Default sw params */ | |
451 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
452 | runtime->period_step = 1; | |
1da177e4 | 453 | runtime->control->avail_min = runtime->period_size; |
1da177e4 LT |
454 | runtime->start_threshold = 1; |
455 | runtime->stop_threshold = runtime->buffer_size; | |
456 | runtime->silence_threshold = 0; | |
457 | runtime->silence_size = 0; | |
ead4046b CL |
458 | runtime->boundary = runtime->buffer_size; |
459 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
460 | runtime->boundary *= 2; | |
1da177e4 LT |
461 | |
462 | snd_pcm_timer_resolution_change(substream); | |
9b0573c0 | 463 | snd_pcm_set_state(substream, SNDRV_PCM_STATE_SETUP); |
9442e691 | 464 | |
82f68251 JB |
465 | if (pm_qos_request_active(&substream->latency_pm_qos_req)) |
466 | pm_qos_remove_request(&substream->latency_pm_qos_req); | |
9442e691 | 467 | if ((usecs = period_to_usecs(runtime)) >= 0) |
82f68251 JB |
468 | pm_qos_add_request(&substream->latency_pm_qos_req, |
469 | PM_QOS_CPU_DMA_LATENCY, usecs); | |
1da177e4 LT |
470 | return 0; |
471 | _error: | |
25985edc | 472 | /* hardware might be unusable from this time, |
1da177e4 LT |
473 | so we force application to retry to set |
474 | the correct hardware parameter settings */ | |
9b0573c0 | 475 | snd_pcm_set_state(substream, SNDRV_PCM_STATE_OPEN); |
1da177e4 LT |
476 | if (substream->ops->hw_free != NULL) |
477 | substream->ops->hw_free(substream); | |
478 | return err; | |
479 | } | |
480 | ||
877211f5 TI |
481 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
482 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 483 | { |
877211f5 | 484 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
485 | int err; |
486 | ||
ef44a1ec LZ |
487 | params = memdup_user(_params, sizeof(*params)); |
488 | if (IS_ERR(params)) | |
489 | return PTR_ERR(params); | |
490 | ||
1da177e4 LT |
491 | err = snd_pcm_hw_params(substream, params); |
492 | if (copy_to_user(_params, params, sizeof(*params))) { | |
493 | if (!err) | |
494 | err = -EFAULT; | |
495 | } | |
ef44a1ec | 496 | |
1da177e4 LT |
497 | kfree(params); |
498 | return err; | |
499 | } | |
500 | ||
877211f5 | 501 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 502 | { |
877211f5 | 503 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
504 | int result = 0; |
505 | ||
7eaa943c TI |
506 | if (PCM_RUNTIME_CHECK(substream)) |
507 | return -ENXIO; | |
1da177e4 | 508 | runtime = substream->runtime; |
1da177e4 LT |
509 | snd_pcm_stream_lock_irq(substream); |
510 | switch (runtime->status->state) { | |
511 | case SNDRV_PCM_STATE_SETUP: | |
512 | case SNDRV_PCM_STATE_PREPARED: | |
513 | break; | |
514 | default: | |
515 | snd_pcm_stream_unlock_irq(substream); | |
516 | return -EBADFD; | |
517 | } | |
518 | snd_pcm_stream_unlock_irq(substream); | |
9c323fcb | 519 | if (atomic_read(&substream->mmap_count)) |
1da177e4 LT |
520 | return -EBADFD; |
521 | if (substream->ops->hw_free) | |
522 | result = substream->ops->hw_free(substream); | |
9b0573c0 | 523 | snd_pcm_set_state(substream, SNDRV_PCM_STATE_OPEN); |
82f68251 | 524 | pm_qos_remove_request(&substream->latency_pm_qos_req); |
1da177e4 LT |
525 | return result; |
526 | } | |
527 | ||
877211f5 TI |
528 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
529 | struct snd_pcm_sw_params *params) | |
1da177e4 | 530 | { |
877211f5 | 531 | struct snd_pcm_runtime *runtime; |
1250932e | 532 | int err; |
1da177e4 | 533 | |
7eaa943c TI |
534 | if (PCM_RUNTIME_CHECK(substream)) |
535 | return -ENXIO; | |
1da177e4 | 536 | runtime = substream->runtime; |
1da177e4 LT |
537 | snd_pcm_stream_lock_irq(substream); |
538 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
539 | snd_pcm_stream_unlock_irq(substream); | |
540 | return -EBADFD; | |
541 | } | |
542 | snd_pcm_stream_unlock_irq(substream); | |
543 | ||
544 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
545 | return -EINVAL; | |
546 | if (params->avail_min == 0) | |
547 | return -EINVAL; | |
1da177e4 LT |
548 | if (params->silence_size >= runtime->boundary) { |
549 | if (params->silence_threshold != 0) | |
550 | return -EINVAL; | |
551 | } else { | |
552 | if (params->silence_size > params->silence_threshold) | |
553 | return -EINVAL; | |
554 | if (params->silence_threshold > runtime->buffer_size) | |
555 | return -EINVAL; | |
556 | } | |
1250932e | 557 | err = 0; |
1da177e4 LT |
558 | snd_pcm_stream_lock_irq(substream); |
559 | runtime->tstamp_mode = params->tstamp_mode; | |
1da177e4 LT |
560 | runtime->period_step = params->period_step; |
561 | runtime->control->avail_min = params->avail_min; | |
562 | runtime->start_threshold = params->start_threshold; | |
563 | runtime->stop_threshold = params->stop_threshold; | |
564 | runtime->silence_threshold = params->silence_threshold; | |
565 | runtime->silence_size = params->silence_size; | |
1da177e4 LT |
566 | params->boundary = runtime->boundary; |
567 | if (snd_pcm_running(substream)) { | |
1da177e4 LT |
568 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
569 | runtime->silence_size > 0) | |
570 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1250932e | 571 | err = snd_pcm_update_state(substream, runtime); |
1da177e4 LT |
572 | } |
573 | snd_pcm_stream_unlock_irq(substream); | |
1250932e | 574 | return err; |
1da177e4 LT |
575 | } |
576 | ||
877211f5 TI |
577 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
578 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 579 | { |
877211f5 | 580 | struct snd_pcm_sw_params params; |
1da177e4 LT |
581 | int err; |
582 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
583 | return -EFAULT; | |
584 | err = snd_pcm_sw_params(substream, ¶ms); | |
585 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
586 | return -EFAULT; | |
587 | return err; | |
588 | } | |
589 | ||
877211f5 TI |
590 | int snd_pcm_status(struct snd_pcm_substream *substream, |
591 | struct snd_pcm_status *status) | |
1da177e4 | 592 | { |
877211f5 | 593 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
594 | |
595 | snd_pcm_stream_lock_irq(substream); | |
596 | status->state = runtime->status->state; | |
597 | status->suspended_state = runtime->status->suspended_state; | |
598 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
599 | goto _end; | |
600 | status->trigger_tstamp = runtime->trigger_tstamp; | |
8c121586 | 601 | if (snd_pcm_running(substream)) { |
1da177e4 | 602 | snd_pcm_update_hw_ptr(substream); |
8c121586 JK |
603 | if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) { |
604 | status->tstamp = runtime->status->tstamp; | |
4eeaaeae PLB |
605 | status->audio_tstamp = |
606 | runtime->status->audio_tstamp; | |
8c121586 JK |
607 | goto _tstamp_end; |
608 | } | |
609 | } | |
a713b583 | 610 | snd_pcm_gettime(runtime, &status->tstamp); |
8c121586 | 611 | _tstamp_end: |
1da177e4 LT |
612 | status->appl_ptr = runtime->control->appl_ptr; |
613 | status->hw_ptr = runtime->status->hw_ptr; | |
614 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
615 | status->avail = snd_pcm_playback_avail(runtime); | |
616 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
4bbe1ddf | 617 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) { |
1da177e4 | 618 | status->delay = runtime->buffer_size - status->avail; |
4bbe1ddf TI |
619 | status->delay += runtime->delay; |
620 | } else | |
1da177e4 LT |
621 | status->delay = 0; |
622 | } else { | |
623 | status->avail = snd_pcm_capture_avail(runtime); | |
624 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
4bbe1ddf | 625 | status->delay = status->avail + runtime->delay; |
1da177e4 LT |
626 | else |
627 | status->delay = 0; | |
628 | } | |
629 | status->avail_max = runtime->avail_max; | |
630 | status->overrange = runtime->overrange; | |
631 | runtime->avail_max = 0; | |
632 | runtime->overrange = 0; | |
633 | _end: | |
634 | snd_pcm_stream_unlock_irq(substream); | |
635 | return 0; | |
636 | } | |
637 | ||
877211f5 TI |
638 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
639 | struct snd_pcm_status __user * _status) | |
1da177e4 | 640 | { |
877211f5 | 641 | struct snd_pcm_status status; |
1da177e4 LT |
642 | int res; |
643 | ||
1da177e4 LT |
644 | memset(&status, 0, sizeof(status)); |
645 | res = snd_pcm_status(substream, &status); | |
646 | if (res < 0) | |
647 | return res; | |
648 | if (copy_to_user(_status, &status, sizeof(status))) | |
649 | return -EFAULT; | |
650 | return 0; | |
651 | } | |
652 | ||
877211f5 TI |
653 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
654 | struct snd_pcm_channel_info * info) | |
1da177e4 | 655 | { |
877211f5 | 656 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
657 | unsigned int channel; |
658 | ||
1da177e4 LT |
659 | channel = info->channel; |
660 | runtime = substream->runtime; | |
661 | snd_pcm_stream_lock_irq(substream); | |
662 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
663 | snd_pcm_stream_unlock_irq(substream); | |
664 | return -EBADFD; | |
665 | } | |
666 | snd_pcm_stream_unlock_irq(substream); | |
667 | if (channel >= runtime->channels) | |
668 | return -EINVAL; | |
669 | memset(info, 0, sizeof(*info)); | |
670 | info->channel = channel; | |
671 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
672 | } | |
673 | ||
877211f5 TI |
674 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
675 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 676 | { |
877211f5 | 677 | struct snd_pcm_channel_info info; |
1da177e4 LT |
678 | int res; |
679 | ||
680 | if (copy_from_user(&info, _info, sizeof(info))) | |
681 | return -EFAULT; | |
682 | res = snd_pcm_channel_info(substream, &info); | |
683 | if (res < 0) | |
684 | return res; | |
685 | if (copy_to_user(_info, &info, sizeof(info))) | |
686 | return -EFAULT; | |
687 | return 0; | |
688 | } | |
689 | ||
877211f5 | 690 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 691 | { |
877211f5 | 692 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
693 | if (runtime->trigger_master == NULL) |
694 | return; | |
695 | if (runtime->trigger_master == substream) { | |
b751eef1 | 696 | snd_pcm_gettime(runtime, &runtime->trigger_tstamp); |
1da177e4 LT |
697 | } else { |
698 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
699 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
700 | } | |
701 | runtime->trigger_master = NULL; | |
702 | } | |
703 | ||
704 | struct action_ops { | |
877211f5 TI |
705 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
706 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
707 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
708 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
709 | }; |
710 | ||
711 | /* | |
712 | * this functions is core for handling of linked stream | |
713 | * Note: the stream state might be changed also on failure | |
714 | * Note2: call with calling stream lock + link lock | |
715 | */ | |
716 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 717 | struct snd_pcm_substream *substream, |
1da177e4 LT |
718 | int state, int do_lock) |
719 | { | |
877211f5 TI |
720 | struct snd_pcm_substream *s = NULL; |
721 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
722 | int res = 0; |
723 | ||
ef991b95 | 724 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 | 725 | if (do_lock && s != substream) |
208eee2a FD |
726 | spin_lock_nested(&s->self_group.lock, |
727 | SINGLE_DEPTH_NESTING); | |
1da177e4 LT |
728 | res = ops->pre_action(s, state); |
729 | if (res < 0) | |
730 | goto _unlock; | |
731 | } | |
ef991b95 | 732 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
733 | res = ops->do_action(s, state); |
734 | if (res < 0) { | |
735 | if (ops->undo_action) { | |
ef991b95 | 736 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
737 | if (s1 == s) /* failed stream */ |
738 | break; | |
739 | ops->undo_action(s1, state); | |
740 | } | |
741 | } | |
742 | s = NULL; /* unlock all */ | |
743 | goto _unlock; | |
744 | } | |
745 | } | |
ef991b95 | 746 | snd_pcm_group_for_each_entry(s, substream) { |
1da177e4 LT |
747 | ops->post_action(s, state); |
748 | } | |
749 | _unlock: | |
750 | if (do_lock) { | |
751 | /* unlock streams */ | |
ef991b95 | 752 | snd_pcm_group_for_each_entry(s1, substream) { |
1da177e4 LT |
753 | if (s1 != substream) |
754 | spin_unlock(&s1->self_group.lock); | |
755 | if (s1 == s) /* end */ | |
756 | break; | |
757 | } | |
758 | } | |
759 | return res; | |
760 | } | |
761 | ||
762 | /* | |
763 | * Note: call with stream lock | |
764 | */ | |
765 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 766 | struct snd_pcm_substream *substream, |
1da177e4 LT |
767 | int state) |
768 | { | |
769 | int res; | |
770 | ||
771 | res = ops->pre_action(substream, state); | |
772 | if (res < 0) | |
773 | return res; | |
774 | res = ops->do_action(substream, state); | |
775 | if (res == 0) | |
776 | ops->post_action(substream, state); | |
777 | else if (ops->undo_action) | |
778 | ops->undo_action(substream, state); | |
779 | return res; | |
780 | } | |
781 | ||
782 | /* | |
783 | * Note: call with stream lock | |
784 | */ | |
785 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 786 | struct snd_pcm_substream *substream, |
1da177e4 LT |
787 | int state) |
788 | { | |
789 | int res; | |
790 | ||
791 | if (snd_pcm_stream_linked(substream)) { | |
792 | if (!spin_trylock(&substream->group->lock)) { | |
793 | spin_unlock(&substream->self_group.lock); | |
794 | spin_lock(&substream->group->lock); | |
795 | spin_lock(&substream->self_group.lock); | |
796 | } | |
797 | res = snd_pcm_action_group(ops, substream, state, 1); | |
798 | spin_unlock(&substream->group->lock); | |
799 | } else { | |
800 | res = snd_pcm_action_single(ops, substream, state); | |
801 | } | |
802 | return res; | |
803 | } | |
804 | ||
805 | /* | |
806 | * Note: don't use any locks before | |
807 | */ | |
808 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 809 | struct snd_pcm_substream *substream, |
1da177e4 LT |
810 | int state) |
811 | { | |
812 | int res; | |
813 | ||
814 | read_lock_irq(&snd_pcm_link_rwlock); | |
815 | if (snd_pcm_stream_linked(substream)) { | |
816 | spin_lock(&substream->group->lock); | |
817 | spin_lock(&substream->self_group.lock); | |
818 | res = snd_pcm_action_group(ops, substream, state, 1); | |
819 | spin_unlock(&substream->self_group.lock); | |
820 | spin_unlock(&substream->group->lock); | |
821 | } else { | |
822 | spin_lock(&substream->self_group.lock); | |
823 | res = snd_pcm_action_single(ops, substream, state); | |
824 | spin_unlock(&substream->self_group.lock); | |
825 | } | |
826 | read_unlock_irq(&snd_pcm_link_rwlock); | |
827 | return res; | |
828 | } | |
829 | ||
830 | /* | |
831 | */ | |
832 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 833 | struct snd_pcm_substream *substream, |
1da177e4 LT |
834 | int state) |
835 | { | |
836 | int res; | |
837 | ||
838 | down_read(&snd_pcm_link_rwsem); | |
839 | if (snd_pcm_stream_linked(substream)) | |
840 | res = snd_pcm_action_group(ops, substream, state, 0); | |
841 | else | |
842 | res = snd_pcm_action_single(ops, substream, state); | |
843 | up_read(&snd_pcm_link_rwsem); | |
844 | return res; | |
845 | } | |
846 | ||
847 | /* | |
848 | * start callbacks | |
849 | */ | |
877211f5 | 850 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 851 | { |
877211f5 | 852 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
853 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
854 | return -EBADFD; | |
855 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
856 | !snd_pcm_playback_data(substream)) | |
857 | return -EPIPE; | |
858 | runtime->trigger_master = substream; | |
859 | return 0; | |
860 | } | |
861 | ||
877211f5 | 862 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
863 | { |
864 | if (substream->runtime->trigger_master != substream) | |
865 | return 0; | |
866 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
867 | } | |
868 | ||
877211f5 | 869 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
870 | { |
871 | if (substream->runtime->trigger_master == substream) | |
872 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
873 | } | |
874 | ||
877211f5 | 875 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 876 | { |
877211f5 | 877 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 878 | snd_pcm_trigger_tstamp(substream); |
6af3fb72 | 879 | runtime->hw_ptr_jiffies = jiffies; |
bd76af0f JK |
880 | runtime->hw_ptr_buffer_jiffies = (runtime->buffer_size * HZ) / |
881 | runtime->rate; | |
1da177e4 LT |
882 | runtime->status->state = state; |
883 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
884 | runtime->silence_size > 0) | |
885 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1da177e4 | 886 | if (substream->timer) |
877211f5 TI |
887 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
888 | &runtime->trigger_tstamp); | |
1da177e4 LT |
889 | } |
890 | ||
891 | static struct action_ops snd_pcm_action_start = { | |
892 | .pre_action = snd_pcm_pre_start, | |
893 | .do_action = snd_pcm_do_start, | |
894 | .undo_action = snd_pcm_undo_start, | |
895 | .post_action = snd_pcm_post_start | |
896 | }; | |
897 | ||
898 | /** | |
1c85cc64 | 899 | * snd_pcm_start - start all linked streams |
df8db936 | 900 | * @substream: the PCM substream instance |
1da177e4 | 901 | */ |
877211f5 | 902 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 903 | { |
877211f5 TI |
904 | return snd_pcm_action(&snd_pcm_action_start, substream, |
905 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
906 | } |
907 | ||
908 | /* | |
909 | * stop callbacks | |
910 | */ | |
877211f5 | 911 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 912 | { |
877211f5 | 913 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
914 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
915 | return -EBADFD; | |
916 | runtime->trigger_master = substream; | |
917 | return 0; | |
918 | } | |
919 | ||
877211f5 | 920 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
921 | { |
922 | if (substream->runtime->trigger_master == substream && | |
923 | snd_pcm_running(substream)) | |
924 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
925 | return 0; /* unconditonally stop all substreams */ | |
926 | } | |
927 | ||
877211f5 | 928 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 929 | { |
877211f5 | 930 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
931 | if (runtime->status->state != state) { |
932 | snd_pcm_trigger_tstamp(substream); | |
933 | if (substream->timer) | |
877211f5 TI |
934 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
935 | &runtime->trigger_tstamp); | |
1da177e4 | 936 | runtime->status->state = state; |
1da177e4 LT |
937 | } |
938 | wake_up(&runtime->sleep); | |
c91a988d | 939 | wake_up(&runtime->tsleep); |
1da177e4 LT |
940 | } |
941 | ||
942 | static struct action_ops snd_pcm_action_stop = { | |
943 | .pre_action = snd_pcm_pre_stop, | |
944 | .do_action = snd_pcm_do_stop, | |
945 | .post_action = snd_pcm_post_stop | |
946 | }; | |
947 | ||
948 | /** | |
1c85cc64 | 949 | * snd_pcm_stop - try to stop all running streams in the substream group |
df8db936 TI |
950 | * @substream: the PCM substream instance |
951 | * @state: PCM state after stopping the stream | |
1da177e4 | 952 | * |
1c85cc64 | 953 | * The state of each stream is then changed to the given state unconditionally. |
1da177e4 | 954 | */ |
fea952e5 | 955 | int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t state) |
1da177e4 LT |
956 | { |
957 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
958 | } | |
959 | ||
e88e8ae6 TI |
960 | EXPORT_SYMBOL(snd_pcm_stop); |
961 | ||
1da177e4 | 962 | /** |
1c85cc64 | 963 | * snd_pcm_drain_done - stop the DMA only when the given stream is playback |
df8db936 | 964 | * @substream: the PCM substream |
1da177e4 | 965 | * |
1c85cc64 | 966 | * After stopping, the state is changed to SETUP. |
1da177e4 LT |
967 | * Unlike snd_pcm_stop(), this affects only the given stream. |
968 | */ | |
877211f5 | 969 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 970 | { |
877211f5 TI |
971 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
972 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
973 | } |
974 | ||
975 | /* | |
976 | * pause callbacks | |
977 | */ | |
877211f5 | 978 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 979 | { |
877211f5 | 980 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
981 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
982 | return -ENOSYS; | |
983 | if (push) { | |
984 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
985 | return -EBADFD; | |
986 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
987 | return -EBADFD; | |
988 | runtime->trigger_master = substream; | |
989 | return 0; | |
990 | } | |
991 | ||
877211f5 | 992 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
993 | { |
994 | if (substream->runtime->trigger_master != substream) | |
995 | return 0; | |
56385a12 JK |
996 | /* some drivers might use hw_ptr to recover from the pause - |
997 | update the hw_ptr now */ | |
998 | if (push) | |
999 | snd_pcm_update_hw_ptr(substream); | |
6af3fb72 | 1000 | /* The jiffies check in snd_pcm_update_hw_ptr*() is done by |
b595076a | 1001 | * a delta between the current jiffies, this gives a large enough |
6af3fb72 TI |
1002 | * delta, effectively to skip the check once. |
1003 | */ | |
1004 | substream->runtime->hw_ptr_jiffies = jiffies - HZ * 1000; | |
1da177e4 LT |
1005 | return substream->ops->trigger(substream, |
1006 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
1007 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
1008 | } | |
1009 | ||
877211f5 | 1010 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1011 | { |
1012 | if (substream->runtime->trigger_master == substream) | |
1013 | substream->ops->trigger(substream, | |
1014 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
1015 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
1016 | } | |
1017 | ||
877211f5 | 1018 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 1019 | { |
877211f5 | 1020 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1021 | snd_pcm_trigger_tstamp(substream); |
1022 | if (push) { | |
1023 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
1024 | if (substream->timer) | |
877211f5 TI |
1025 | snd_timer_notify(substream->timer, |
1026 | SNDRV_TIMER_EVENT_MPAUSE, | |
1027 | &runtime->trigger_tstamp); | |
1da177e4 | 1028 | wake_up(&runtime->sleep); |
c91a988d | 1029 | wake_up(&runtime->tsleep); |
1da177e4 LT |
1030 | } else { |
1031 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1da177e4 | 1032 | if (substream->timer) |
877211f5 TI |
1033 | snd_timer_notify(substream->timer, |
1034 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1035 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1036 | } |
1037 | } | |
1038 | ||
1039 | static struct action_ops snd_pcm_action_pause = { | |
1040 | .pre_action = snd_pcm_pre_pause, | |
1041 | .do_action = snd_pcm_do_pause, | |
1042 | .undo_action = snd_pcm_undo_pause, | |
1043 | .post_action = snd_pcm_post_pause | |
1044 | }; | |
1045 | ||
1046 | /* | |
1047 | * Push/release the pause for all linked streams. | |
1048 | */ | |
877211f5 | 1049 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1050 | { |
1051 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1052 | } | |
1053 | ||
1054 | #ifdef CONFIG_PM | |
1055 | /* suspend */ | |
1056 | ||
877211f5 | 1057 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1058 | { |
877211f5 | 1059 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1060 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1061 | return -EBUSY; | |
1062 | runtime->trigger_master = substream; | |
1063 | return 0; | |
1064 | } | |
1065 | ||
877211f5 | 1066 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1067 | { |
877211f5 | 1068 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1069 | if (runtime->trigger_master != substream) |
1070 | return 0; | |
1071 | if (! snd_pcm_running(substream)) | |
1072 | return 0; | |
1073 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1074 | return 0; /* suspend unconditionally */ | |
1075 | } | |
1076 | ||
877211f5 | 1077 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1078 | { |
877211f5 | 1079 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1080 | snd_pcm_trigger_tstamp(substream); |
1081 | if (substream->timer) | |
877211f5 TI |
1082 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1083 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1084 | runtime->status->suspended_state = runtime->status->state; |
1085 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1da177e4 | 1086 | wake_up(&runtime->sleep); |
c91a988d | 1087 | wake_up(&runtime->tsleep); |
1da177e4 LT |
1088 | } |
1089 | ||
1090 | static struct action_ops snd_pcm_action_suspend = { | |
1091 | .pre_action = snd_pcm_pre_suspend, | |
1092 | .do_action = snd_pcm_do_suspend, | |
1093 | .post_action = snd_pcm_post_suspend | |
1094 | }; | |
1095 | ||
1096 | /** | |
1c85cc64 | 1097 | * snd_pcm_suspend - trigger SUSPEND to all linked streams |
df8db936 | 1098 | * @substream: the PCM substream |
1da177e4 | 1099 | * |
1da177e4 LT |
1100 | * After this call, all streams are changed to SUSPENDED state. |
1101 | */ | |
877211f5 | 1102 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1103 | { |
1104 | int err; | |
1105 | unsigned long flags; | |
1106 | ||
603bf524 TI |
1107 | if (! substream) |
1108 | return 0; | |
1109 | ||
1da177e4 LT |
1110 | snd_pcm_stream_lock_irqsave(substream, flags); |
1111 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1112 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1113 | return err; | |
1114 | } | |
1115 | ||
e88e8ae6 TI |
1116 | EXPORT_SYMBOL(snd_pcm_suspend); |
1117 | ||
1da177e4 | 1118 | /** |
1c85cc64 | 1119 | * snd_pcm_suspend_all - trigger SUSPEND to all substreams in the given pcm |
df8db936 | 1120 | * @pcm: the PCM instance |
1da177e4 | 1121 | * |
1da177e4 LT |
1122 | * After this call, all streams are changed to SUSPENDED state. |
1123 | */ | |
877211f5 | 1124 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1125 | { |
877211f5 | 1126 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1127 | int stream, err = 0; |
1128 | ||
603bf524 TI |
1129 | if (! pcm) |
1130 | return 0; | |
1131 | ||
1da177e4 | 1132 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1133 | for (substream = pcm->streams[stream].substream; |
1134 | substream; substream = substream->next) { | |
1da177e4 LT |
1135 | /* FIXME: the open/close code should lock this as well */ |
1136 | if (substream->runtime == NULL) | |
1137 | continue; | |
1138 | err = snd_pcm_suspend(substream); | |
1139 | if (err < 0 && err != -EBUSY) | |
1140 | return err; | |
1141 | } | |
1142 | } | |
1143 | return 0; | |
1144 | } | |
1145 | ||
e88e8ae6 TI |
1146 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1147 | ||
1da177e4 LT |
1148 | /* resume */ |
1149 | ||
877211f5 | 1150 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1151 | { |
877211f5 | 1152 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1153 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1154 | return -ENOSYS; | |
1155 | runtime->trigger_master = substream; | |
1156 | return 0; | |
1157 | } | |
1158 | ||
877211f5 | 1159 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1160 | { |
877211f5 | 1161 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1162 | if (runtime->trigger_master != substream) |
1163 | return 0; | |
1164 | /* DMA not running previously? */ | |
1165 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1166 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1167 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1168 | return 0; | |
1169 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1170 | } | |
1171 | ||
877211f5 | 1172 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1173 | { |
1174 | if (substream->runtime->trigger_master == substream && | |
1175 | snd_pcm_running(substream)) | |
1176 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1177 | } | |
1178 | ||
877211f5 | 1179 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1180 | { |
877211f5 | 1181 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1182 | snd_pcm_trigger_tstamp(substream); |
1183 | if (substream->timer) | |
877211f5 TI |
1184 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1185 | &runtime->trigger_tstamp); | |
1da177e4 | 1186 | runtime->status->state = runtime->status->suspended_state; |
1da177e4 LT |
1187 | } |
1188 | ||
1189 | static struct action_ops snd_pcm_action_resume = { | |
1190 | .pre_action = snd_pcm_pre_resume, | |
1191 | .do_action = snd_pcm_do_resume, | |
1192 | .undo_action = snd_pcm_undo_resume, | |
1193 | .post_action = snd_pcm_post_resume | |
1194 | }; | |
1195 | ||
877211f5 | 1196 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1197 | { |
877211f5 | 1198 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1199 | int res; |
1200 | ||
1201 | snd_power_lock(card); | |
cbac4b0c | 1202 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1203 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1204 | snd_power_unlock(card); | |
1205 | return res; | |
1206 | } | |
1207 | ||
1208 | #else | |
1209 | ||
877211f5 | 1210 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1211 | { |
1212 | return -ENOSYS; | |
1213 | } | |
1214 | ||
1215 | #endif /* CONFIG_PM */ | |
1216 | ||
1217 | /* | |
1218 | * xrun ioctl | |
1219 | * | |
1220 | * Change the RUNNING stream(s) to XRUN state. | |
1221 | */ | |
877211f5 | 1222 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1223 | { |
877211f5 TI |
1224 | struct snd_card *card = substream->pcm->card; |
1225 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1226 | int result; |
1227 | ||
1228 | snd_power_lock(card); | |
1229 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1230 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1231 | if (result < 0) |
1232 | goto _unlock; | |
1233 | } | |
1234 | ||
1235 | snd_pcm_stream_lock_irq(substream); | |
1236 | switch (runtime->status->state) { | |
1237 | case SNDRV_PCM_STATE_XRUN: | |
1238 | result = 0; /* already there */ | |
1239 | break; | |
1240 | case SNDRV_PCM_STATE_RUNNING: | |
1241 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1242 | break; | |
1243 | default: | |
1244 | result = -EBADFD; | |
1245 | } | |
1246 | snd_pcm_stream_unlock_irq(substream); | |
1247 | _unlock: | |
1248 | snd_power_unlock(card); | |
1249 | return result; | |
1250 | } | |
1251 | ||
1252 | /* | |
1253 | * reset ioctl | |
1254 | */ | |
877211f5 | 1255 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1256 | { |
877211f5 | 1257 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1258 | switch (runtime->status->state) { |
1259 | case SNDRV_PCM_STATE_RUNNING: | |
1260 | case SNDRV_PCM_STATE_PREPARED: | |
1261 | case SNDRV_PCM_STATE_PAUSED: | |
1262 | case SNDRV_PCM_STATE_SUSPENDED: | |
1263 | return 0; | |
1264 | default: | |
1265 | return -EBADFD; | |
1266 | } | |
1267 | } | |
1268 | ||
877211f5 | 1269 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1270 | { |
877211f5 | 1271 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1272 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1273 | if (err < 0) | |
1274 | return err; | |
1da177e4 | 1275 | runtime->hw_ptr_base = 0; |
e7636925 JK |
1276 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1277 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1278 | runtime->silence_start = runtime->status->hw_ptr; |
1279 | runtime->silence_filled = 0; | |
1280 | return 0; | |
1281 | } | |
1282 | ||
877211f5 | 1283 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1284 | { |
877211f5 | 1285 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1286 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1287 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1288 | runtime->silence_size > 0) | |
1289 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1290 | } | |
1291 | ||
1292 | static struct action_ops snd_pcm_action_reset = { | |
1293 | .pre_action = snd_pcm_pre_reset, | |
1294 | .do_action = snd_pcm_do_reset, | |
1295 | .post_action = snd_pcm_post_reset | |
1296 | }; | |
1297 | ||
877211f5 | 1298 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1299 | { |
1300 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1301 | } | |
1302 | ||
1303 | /* | |
1304 | * prepare ioctl | |
1305 | */ | |
0df63e44 TI |
1306 | /* we use the second argument for updating f_flags */ |
1307 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, | |
1308 | int f_flags) | |
1da177e4 | 1309 | { |
877211f5 | 1310 | struct snd_pcm_runtime *runtime = substream->runtime; |
de1b8b93 TI |
1311 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
1312 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED) | |
1da177e4 LT |
1313 | return -EBADFD; |
1314 | if (snd_pcm_running(substream)) | |
1315 | return -EBUSY; | |
0df63e44 | 1316 | substream->f_flags = f_flags; |
1da177e4 LT |
1317 | return 0; |
1318 | } | |
1319 | ||
877211f5 | 1320 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1321 | { |
1322 | int err; | |
1323 | err = substream->ops->prepare(substream); | |
1324 | if (err < 0) | |
1325 | return err; | |
1326 | return snd_pcm_do_reset(substream, 0); | |
1327 | } | |
1328 | ||
877211f5 | 1329 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1330 | { |
877211f5 | 1331 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 1332 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
9b0573c0 | 1333 | snd_pcm_set_state(substream, SNDRV_PCM_STATE_PREPARED); |
1da177e4 LT |
1334 | } |
1335 | ||
1336 | static struct action_ops snd_pcm_action_prepare = { | |
1337 | .pre_action = snd_pcm_pre_prepare, | |
1338 | .do_action = snd_pcm_do_prepare, | |
1339 | .post_action = snd_pcm_post_prepare | |
1340 | }; | |
1341 | ||
1342 | /** | |
1c85cc64 | 1343 | * snd_pcm_prepare - prepare the PCM substream to be triggerable |
df8db936 | 1344 | * @substream: the PCM substream instance |
0df63e44 | 1345 | * @file: file to refer f_flags |
1da177e4 | 1346 | */ |
0df63e44 TI |
1347 | static int snd_pcm_prepare(struct snd_pcm_substream *substream, |
1348 | struct file *file) | |
1da177e4 LT |
1349 | { |
1350 | int res; | |
877211f5 | 1351 | struct snd_card *card = substream->pcm->card; |
0df63e44 TI |
1352 | int f_flags; |
1353 | ||
1354 | if (file) | |
1355 | f_flags = file->f_flags; | |
1356 | else | |
1357 | f_flags = substream->f_flags; | |
1da177e4 LT |
1358 | |
1359 | snd_power_lock(card); | |
cbac4b0c | 1360 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
0df63e44 TI |
1361 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, |
1362 | substream, f_flags); | |
1da177e4 LT |
1363 | snd_power_unlock(card); |
1364 | return res; | |
1365 | } | |
1366 | ||
1367 | /* | |
1368 | * drain ioctl | |
1369 | */ | |
1370 | ||
877211f5 | 1371 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1372 | { |
4f7c39dc TI |
1373 | struct snd_pcm_runtime *runtime = substream->runtime; |
1374 | switch (runtime->status->state) { | |
1375 | case SNDRV_PCM_STATE_OPEN: | |
1376 | case SNDRV_PCM_STATE_DISCONNECTED: | |
1377 | case SNDRV_PCM_STATE_SUSPENDED: | |
1378 | return -EBADFD; | |
1379 | } | |
1380 | runtime->trigger_master = substream; | |
1da177e4 LT |
1381 | return 0; |
1382 | } | |
1383 | ||
877211f5 | 1384 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1385 | { |
877211f5 | 1386 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1387 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1388 | switch (runtime->status->state) { | |
1389 | case SNDRV_PCM_STATE_PREPARED: | |
1390 | /* start playback stream if possible */ | |
1391 | if (! snd_pcm_playback_empty(substream)) { | |
1392 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1393 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1394 | } | |
1395 | break; | |
1396 | case SNDRV_PCM_STATE_RUNNING: | |
1397 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1398 | break; | |
4f7c39dc TI |
1399 | case SNDRV_PCM_STATE_XRUN: |
1400 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
1401 | break; | |
1da177e4 LT |
1402 | default: |
1403 | break; | |
1404 | } | |
1405 | } else { | |
1406 | /* stop running stream */ | |
1407 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
b05e5787 | 1408 | int new_state = snd_pcm_capture_avail(runtime) > 0 ? |
1da177e4 | 1409 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; |
b05e5787 MŚ |
1410 | snd_pcm_do_stop(substream, new_state); |
1411 | snd_pcm_post_stop(substream, new_state); | |
1da177e4 LT |
1412 | } |
1413 | } | |
1414 | return 0; | |
1415 | } | |
1416 | ||
877211f5 | 1417 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1418 | { |
1419 | } | |
1420 | ||
1421 | static struct action_ops snd_pcm_action_drain_init = { | |
1422 | .pre_action = snd_pcm_pre_drain_init, | |
1423 | .do_action = snd_pcm_do_drain_init, | |
1424 | .post_action = snd_pcm_post_drain_init | |
1425 | }; | |
1426 | ||
877211f5 | 1427 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1428 | |
1429 | /* | |
1430 | * Drain the stream(s). | |
1431 | * When the substream is linked, sync until the draining of all playback streams | |
1432 | * is finished. | |
1433 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1434 | * (capture only) state. | |
1435 | */ | |
4cdc115f TI |
1436 | static int snd_pcm_drain(struct snd_pcm_substream *substream, |
1437 | struct file *file) | |
1da177e4 | 1438 | { |
877211f5 TI |
1439 | struct snd_card *card; |
1440 | struct snd_pcm_runtime *runtime; | |
ef991b95 | 1441 | struct snd_pcm_substream *s; |
d3a7dcfe | 1442 | wait_queue_t wait; |
1da177e4 | 1443 | int result = 0; |
4cdc115f | 1444 | int nonblock = 0; |
1da177e4 | 1445 | |
1da177e4 LT |
1446 | card = substream->pcm->card; |
1447 | runtime = substream->runtime; | |
1448 | ||
1449 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1450 | return -EBADFD; | |
1451 | ||
1da177e4 LT |
1452 | snd_power_lock(card); |
1453 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1454 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1455 | if (result < 0) { |
1456 | snd_power_unlock(card); | |
1457 | return result; | |
1458 | } | |
1da177e4 LT |
1459 | } |
1460 | ||
4cdc115f TI |
1461 | if (file) { |
1462 | if (file->f_flags & O_NONBLOCK) | |
1463 | nonblock = 1; | |
1464 | } else if (substream->f_flags & O_NONBLOCK) | |
1465 | nonblock = 1; | |
1466 | ||
21cb2a2e | 1467 | down_read(&snd_pcm_link_rwsem); |
21cb2a2e TI |
1468 | snd_pcm_stream_lock_irq(substream); |
1469 | /* resume pause */ | |
d3a7dcfe | 1470 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
21cb2a2e TI |
1471 | snd_pcm_pause(substream, 0); |
1472 | ||
1473 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1474 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
4cdc115f TI |
1475 | if (result < 0) |
1476 | goto unlock; | |
1477 | /* in non-blocking, we don't wait in ioctl but let caller poll */ | |
1478 | if (nonblock) { | |
1479 | result = -EAGAIN; | |
1480 | goto unlock; | |
21cb2a2e | 1481 | } |
1da177e4 LT |
1482 | |
1483 | for (;;) { | |
1484 | long tout; | |
d3a7dcfe | 1485 | struct snd_pcm_runtime *to_check; |
1da177e4 LT |
1486 | if (signal_pending(current)) { |
1487 | result = -ERESTARTSYS; | |
1488 | break; | |
1489 | } | |
d3a7dcfe TI |
1490 | /* find a substream to drain */ |
1491 | to_check = NULL; | |
1492 | snd_pcm_group_for_each_entry(s, substream) { | |
1493 | if (s->stream != SNDRV_PCM_STREAM_PLAYBACK) | |
1494 | continue; | |
1495 | runtime = s->runtime; | |
1496 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { | |
1497 | to_check = runtime; | |
21cb2a2e | 1498 | break; |
d3a7dcfe | 1499 | } |
21cb2a2e | 1500 | } |
d3a7dcfe TI |
1501 | if (!to_check) |
1502 | break; /* all drained */ | |
1503 | init_waitqueue_entry(&wait, current); | |
1504 | add_wait_queue(&to_check->sleep, &wait); | |
1da177e4 | 1505 | snd_pcm_stream_unlock_irq(substream); |
d3a7dcfe | 1506 | up_read(&snd_pcm_link_rwsem); |
1da177e4 | 1507 | snd_power_unlock(card); |
f2b3614c TI |
1508 | if (runtime->no_period_wakeup) |
1509 | tout = MAX_SCHEDULE_TIMEOUT; | |
1510 | else { | |
1511 | tout = 10; | |
1512 | if (runtime->rate) { | |
1513 | long t = runtime->period_size * 2 / runtime->rate; | |
1514 | tout = max(t, tout); | |
1515 | } | |
1516 | tout = msecs_to_jiffies(tout * 1000); | |
1517 | } | |
1518 | tout = schedule_timeout_interruptible(tout); | |
1da177e4 | 1519 | snd_power_lock(card); |
d3a7dcfe | 1520 | down_read(&snd_pcm_link_rwsem); |
1da177e4 | 1521 | snd_pcm_stream_lock_irq(substream); |
d3a7dcfe | 1522 | remove_wait_queue(&to_check->sleep, &wait); |
0914f796 TI |
1523 | if (card->shutdown) { |
1524 | result = -ENODEV; | |
1525 | break; | |
1526 | } | |
1da177e4 LT |
1527 | if (tout == 0) { |
1528 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1529 | result = -ESTRPIPE; | |
1530 | else { | |
1531 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1532 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1533 | result = -EIO; | |
1534 | } | |
1535 | break; | |
1536 | } | |
1da177e4 | 1537 | } |
21cb2a2e | 1538 | |
4cdc115f | 1539 | unlock: |
21cb2a2e | 1540 | snd_pcm_stream_unlock_irq(substream); |
d3a7dcfe | 1541 | up_read(&snd_pcm_link_rwsem); |
1da177e4 | 1542 | snd_power_unlock(card); |
1da177e4 LT |
1543 | |
1544 | return result; | |
1545 | } | |
1546 | ||
1547 | /* | |
1548 | * drop ioctl | |
1549 | * | |
1550 | * Immediately put all linked substreams into SETUP state. | |
1551 | */ | |
877211f5 | 1552 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1553 | { |
877211f5 | 1554 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1555 | int result = 0; |
1556 | ||
7eaa943c TI |
1557 | if (PCM_RUNTIME_CHECK(substream)) |
1558 | return -ENXIO; | |
1da177e4 | 1559 | runtime = substream->runtime; |
1da177e4 | 1560 | |
de1b8b93 | 1561 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN || |
24e8fc49 TI |
1562 | runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED || |
1563 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1da177e4 LT |
1564 | return -EBADFD; |
1565 | ||
1da177e4 LT |
1566 | snd_pcm_stream_lock_irq(substream); |
1567 | /* resume pause */ | |
1568 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1569 | snd_pcm_pause(substream, 0); | |
1570 | ||
1571 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1572 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1573 | snd_pcm_stream_unlock_irq(substream); | |
24e8fc49 | 1574 | |
1da177e4 LT |
1575 | return result; |
1576 | } | |
1577 | ||
1578 | ||
1579 | /* WARNING: Don't forget to fput back the file */ | |
bdbf6943 | 1580 | static struct file *snd_pcm_file_fd(int fd, int *fput_needed) |
1da177e4 LT |
1581 | { |
1582 | struct file *file; | |
1583 | struct inode *inode; | |
f87135f5 CL |
1584 | unsigned int minor; |
1585 | ||
bdbf6943 | 1586 | file = fget_light(fd, fput_needed); |
1da177e4 LT |
1587 | if (!file) |
1588 | return NULL; | |
496ad9aa | 1589 | inode = file_inode(file); |
1da177e4 LT |
1590 | if (!S_ISCHR(inode->i_mode) || |
1591 | imajor(inode) != snd_major) { | |
bdbf6943 | 1592 | fput_light(file, *fput_needed); |
1da177e4 LT |
1593 | return NULL; |
1594 | } | |
1595 | minor = iminor(inode); | |
f87135f5 CL |
1596 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1597 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
bdbf6943 | 1598 | fput_light(file, *fput_needed); |
1da177e4 LT |
1599 | return NULL; |
1600 | } | |
1601 | return file; | |
1602 | } | |
1603 | ||
1604 | /* | |
1605 | * PCM link handling | |
1606 | */ | |
877211f5 | 1607 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1608 | { |
1609 | int res = 0; | |
1610 | struct file *file; | |
877211f5 TI |
1611 | struct snd_pcm_file *pcm_file; |
1612 | struct snd_pcm_substream *substream1; | |
1662591b | 1613 | struct snd_pcm_group *group; |
bdbf6943 | 1614 | int fput_needed; |
1da177e4 | 1615 | |
bdbf6943 | 1616 | file = snd_pcm_file_fd(fd, &fput_needed); |
1da177e4 LT |
1617 | if (!file) |
1618 | return -EBADFD; | |
1619 | pcm_file = file->private_data; | |
1620 | substream1 = pcm_file->substream; | |
1662591b TI |
1621 | group = kmalloc(sizeof(*group), GFP_KERNEL); |
1622 | if (!group) { | |
1623 | res = -ENOMEM; | |
1624 | goto _nolock; | |
1625 | } | |
1da177e4 LT |
1626 | down_write(&snd_pcm_link_rwsem); |
1627 | write_lock_irq(&snd_pcm_link_rwlock); | |
1628 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1629 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1630 | res = -EBADFD; | |
1631 | goto _end; | |
1632 | } | |
1633 | if (snd_pcm_stream_linked(substream1)) { | |
1634 | res = -EALREADY; | |
1635 | goto _end; | |
1636 | } | |
1637 | if (!snd_pcm_stream_linked(substream)) { | |
1662591b | 1638 | substream->group = group; |
1da177e4 LT |
1639 | spin_lock_init(&substream->group->lock); |
1640 | INIT_LIST_HEAD(&substream->group->substreams); | |
1641 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1642 | substream->group->count = 1; | |
1643 | } | |
1644 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1645 | substream->group->count++; | |
1646 | substream1->group = substream->group; | |
1647 | _end: | |
1648 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1649 | up_write(&snd_pcm_link_rwsem); | |
1662591b | 1650 | _nolock: |
a0830dbd | 1651 | snd_card_unref(substream1->pcm->card); |
bdbf6943 | 1652 | fput_light(file, fput_needed); |
1662591b TI |
1653 | if (res < 0) |
1654 | kfree(group); | |
1da177e4 LT |
1655 | return res; |
1656 | } | |
1657 | ||
877211f5 | 1658 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1659 | { |
1660 | substream->group = &substream->self_group; | |
1661 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1662 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1663 | } | |
1664 | ||
877211f5 | 1665 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 | 1666 | { |
ef991b95 | 1667 | struct snd_pcm_substream *s; |
1da177e4 LT |
1668 | int res = 0; |
1669 | ||
1670 | down_write(&snd_pcm_link_rwsem); | |
1671 | write_lock_irq(&snd_pcm_link_rwlock); | |
1672 | if (!snd_pcm_stream_linked(substream)) { | |
1673 | res = -EALREADY; | |
1674 | goto _end; | |
1675 | } | |
1676 | list_del(&substream->link_list); | |
1677 | substream->group->count--; | |
1678 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
ef991b95 TI |
1679 | snd_pcm_group_for_each_entry(s, substream) { |
1680 | relink_to_local(s); | |
1da177e4 LT |
1681 | break; |
1682 | } | |
1683 | kfree(substream->group); | |
1684 | } | |
1685 | relink_to_local(substream); | |
1686 | _end: | |
1687 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1688 | up_write(&snd_pcm_link_rwsem); | |
1689 | return res; | |
1690 | } | |
1691 | ||
1692 | /* | |
1693 | * hw configurator | |
1694 | */ | |
877211f5 TI |
1695 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1696 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1697 | { |
877211f5 | 1698 | struct snd_interval t; |
1da177e4 LT |
1699 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1700 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1701 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1702 | } | |
1703 | ||
877211f5 TI |
1704 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1705 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1706 | { |
877211f5 | 1707 | struct snd_interval t; |
1da177e4 LT |
1708 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1709 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1710 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1711 | } | |
1712 | ||
877211f5 TI |
1713 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1714 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1715 | { |
877211f5 | 1716 | struct snd_interval t; |
1da177e4 LT |
1717 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1718 | hw_param_interval_c(params, rule->deps[1]), | |
1719 | (unsigned long) rule->private, &t); | |
1720 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1721 | } | |
1722 | ||
877211f5 TI |
1723 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1724 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1725 | { |
877211f5 | 1726 | struct snd_interval t; |
1da177e4 LT |
1727 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1728 | (unsigned long) rule->private, | |
1729 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1730 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1731 | } | |
1732 | ||
877211f5 TI |
1733 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1734 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1735 | { |
1736 | unsigned int k; | |
877211f5 TI |
1737 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1738 | struct snd_mask m; | |
1739 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1740 | snd_mask_any(&m); |
1741 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1742 | int bits; | |
1743 | if (! snd_mask_test(mask, k)) | |
1744 | continue; | |
1745 | bits = snd_pcm_format_physical_width(k); | |
1746 | if (bits <= 0) | |
1747 | continue; /* ignore invalid formats */ | |
1748 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1749 | snd_mask_reset(&m, k); | |
1750 | } | |
1751 | return snd_mask_refine(mask, &m); | |
1752 | } | |
1753 | ||
877211f5 TI |
1754 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1755 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1756 | { |
877211f5 | 1757 | struct snd_interval t; |
1da177e4 LT |
1758 | unsigned int k; |
1759 | t.min = UINT_MAX; | |
1760 | t.max = 0; | |
1761 | t.openmin = 0; | |
1762 | t.openmax = 0; | |
1763 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1764 | int bits; | |
1765 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1766 | continue; | |
1767 | bits = snd_pcm_format_physical_width(k); | |
1768 | if (bits <= 0) | |
1769 | continue; /* ignore invalid formats */ | |
1770 | if (t.min > (unsigned)bits) | |
1771 | t.min = bits; | |
1772 | if (t.max < (unsigned)bits) | |
1773 | t.max = bits; | |
1774 | } | |
1775 | t.integer = 1; | |
1776 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1777 | } | |
1778 | ||
1779 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1780 | #error "Change this table" | |
1781 | #endif | |
1782 | ||
1783 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1784 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1785 | ||
7653d557 CL |
1786 | const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = { |
1787 | .count = ARRAY_SIZE(rates), | |
1788 | .list = rates, | |
1789 | }; | |
1790 | ||
877211f5 TI |
1791 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1792 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1793 | { |
877211f5 | 1794 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 | 1795 | return snd_interval_list(hw_param_interval(params, rule->var), |
7653d557 CL |
1796 | snd_pcm_known_rates.count, |
1797 | snd_pcm_known_rates.list, hw->rates); | |
1da177e4 LT |
1798 | } |
1799 | ||
877211f5 TI |
1800 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1801 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1802 | { |
877211f5 TI |
1803 | struct snd_interval t; |
1804 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1805 | t.min = 0; |
1806 | t.max = substream->buffer_bytes_max; | |
1807 | t.openmin = 0; | |
1808 | t.openmax = 0; | |
1809 | t.integer = 1; | |
1810 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1811 | } | |
1812 | ||
877211f5 | 1813 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1814 | { |
877211f5 TI |
1815 | struct snd_pcm_runtime *runtime = substream->runtime; |
1816 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1817 | int k, err; |
1818 | ||
1819 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1820 | snd_mask_any(constrs_mask(constrs, k)); | |
1821 | } | |
1822 | ||
1823 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1824 | snd_interval_any(constrs_interval(constrs, k)); | |
1825 | } | |
1826 | ||
1827 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1828 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1829 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1830 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1831 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1832 | ||
1833 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1834 | snd_pcm_hw_rule_format, NULL, | |
1835 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1836 | if (err < 0) | |
1837 | return err; | |
1838 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1839 | snd_pcm_hw_rule_sample_bits, NULL, | |
1840 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1841 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1842 | if (err < 0) | |
1843 | return err; | |
1844 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1845 | snd_pcm_hw_rule_div, NULL, | |
1846 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1847 | if (err < 0) | |
1848 | return err; | |
1849 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1850 | snd_pcm_hw_rule_mul, NULL, | |
1851 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1852 | if (err < 0) | |
1853 | return err; | |
1854 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1855 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1856 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1857 | if (err < 0) | |
1858 | return err; | |
1859 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1860 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1861 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1862 | if (err < 0) | |
1863 | return err; | |
1864 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1865 | snd_pcm_hw_rule_div, NULL, | |
1866 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1867 | if (err < 0) | |
1868 | return err; | |
1869 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1870 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1871 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1872 | if (err < 0) | |
1873 | return err; | |
1874 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1875 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1876 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1877 | if (err < 0) | |
1878 | return err; | |
1879 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1880 | snd_pcm_hw_rule_div, NULL, | |
1881 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1882 | if (err < 0) | |
1883 | return err; | |
1884 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1885 | snd_pcm_hw_rule_div, NULL, | |
1886 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1887 | if (err < 0) | |
1888 | return err; | |
1889 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1890 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1891 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1892 | if (err < 0) | |
1893 | return err; | |
1894 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1895 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1896 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1897 | if (err < 0) | |
1898 | return err; | |
1899 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1900 | snd_pcm_hw_rule_mul, NULL, | |
1901 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1902 | if (err < 0) | |
1903 | return err; | |
1904 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1905 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1906 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1907 | if (err < 0) | |
1908 | return err; | |
1909 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1910 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1911 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1912 | if (err < 0) | |
1913 | return err; | |
1914 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1915 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1916 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1917 | if (err < 0) | |
1918 | return err; | |
1919 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1920 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1921 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1922 | if (err < 0) | |
1923 | return err; | |
1924 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1925 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1926 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1927 | if (err < 0) | |
1928 | return err; | |
1929 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1930 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1931 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1932 | if (err < 0) | |
1933 | return err; | |
1934 | return 0; | |
1935 | } | |
1936 | ||
877211f5 | 1937 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1938 | { |
877211f5 TI |
1939 | struct snd_pcm_runtime *runtime = substream->runtime; |
1940 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1941 | int err; |
1942 | unsigned int mask = 0; | |
1943 | ||
1944 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1945 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1946 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1947 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1948 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1949 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1950 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1951 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1952 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1953 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1954 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1955 | } | |
1956 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
7eaa943c TI |
1957 | if (err < 0) |
1958 | return err; | |
1da177e4 LT |
1959 | |
1960 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
7eaa943c TI |
1961 | if (err < 0) |
1962 | return err; | |
1da177e4 LT |
1963 | |
1964 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
7eaa943c TI |
1965 | if (err < 0) |
1966 | return err; | |
1da177e4 LT |
1967 | |
1968 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1969 | hw->channels_min, hw->channels_max); | |
7eaa943c TI |
1970 | if (err < 0) |
1971 | return err; | |
1da177e4 LT |
1972 | |
1973 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1974 | hw->rate_min, hw->rate_max); | |
8b90ca08 GL |
1975 | if (err < 0) |
1976 | return err; | |
1da177e4 LT |
1977 | |
1978 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1979 | hw->period_bytes_min, hw->period_bytes_max); | |
8b90ca08 GL |
1980 | if (err < 0) |
1981 | return err; | |
1da177e4 LT |
1982 | |
1983 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1984 | hw->periods_min, hw->periods_max); | |
7eaa943c TI |
1985 | if (err < 0) |
1986 | return err; | |
1da177e4 LT |
1987 | |
1988 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1989 | hw->period_bytes_min, hw->buffer_bytes_max); | |
7eaa943c TI |
1990 | if (err < 0) |
1991 | return err; | |
1da177e4 LT |
1992 | |
1993 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1994 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1995 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1996 | if (err < 0) | |
1997 | return err; | |
1998 | ||
1999 | /* FIXME: remove */ | |
2000 | if (runtime->dma_bytes) { | |
2001 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
7eaa943c | 2002 | if (err < 0) |
6cf95152 | 2003 | return err; |
1da177e4 LT |
2004 | } |
2005 | ||
2006 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
2007 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
2008 | snd_pcm_hw_rule_rate, hw, | |
2009 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
2010 | if (err < 0) | |
2011 | return err; | |
2012 | } | |
2013 | ||
2014 | /* FIXME: this belong to lowlevel */ | |
1da177e4 LT |
2015 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); |
2016 | ||
2017 | return 0; | |
2018 | } | |
2019 | ||
3bf75f9b | 2020 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 2021 | { |
1da177e4 | 2022 | snd_pcm_unlink(substream); |
3bf75f9b TI |
2023 | } |
2024 | ||
2025 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
2026 | { | |
0df63e44 TI |
2027 | substream->ref_count--; |
2028 | if (substream->ref_count > 0) | |
2029 | return; | |
2030 | ||
3bf75f9b | 2031 | snd_pcm_drop(substream); |
3bf75f9b | 2032 | if (substream->hw_opened) { |
1da177e4 LT |
2033 | if (substream->ops->hw_free != NULL) |
2034 | substream->ops->hw_free(substream); | |
2035 | substream->ops->close(substream); | |
3bf75f9b | 2036 | substream->hw_opened = 0; |
1da177e4 | 2037 | } |
8699a0b6 TI |
2038 | if (pm_qos_request_active(&substream->latency_pm_qos_req)) |
2039 | pm_qos_remove_request(&substream->latency_pm_qos_req); | |
1576274d TI |
2040 | if (substream->pcm_release) { |
2041 | substream->pcm_release(substream); | |
2042 | substream->pcm_release = NULL; | |
2043 | } | |
3bf75f9b TI |
2044 | snd_pcm_detach_substream(substream); |
2045 | } | |
2046 | ||
e88e8ae6 TI |
2047 | EXPORT_SYMBOL(snd_pcm_release_substream); |
2048 | ||
3bf75f9b TI |
2049 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
2050 | struct file *file, | |
2051 | struct snd_pcm_substream **rsubstream) | |
2052 | { | |
2053 | struct snd_pcm_substream *substream; | |
2054 | int err; | |
2055 | ||
2056 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2057 | if (err < 0) | |
2058 | return err; | |
0df63e44 TI |
2059 | if (substream->ref_count > 1) { |
2060 | *rsubstream = substream; | |
2061 | return 0; | |
2062 | } | |
2063 | ||
3bf75f9b TI |
2064 | err = snd_pcm_hw_constraints_init(substream); |
2065 | if (err < 0) { | |
2066 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2067 | goto error; | |
2068 | } | |
2069 | ||
2070 | if ((err = substream->ops->open(substream)) < 0) | |
2071 | goto error; | |
2072 | ||
2073 | substream->hw_opened = 1; | |
2074 | ||
2075 | err = snd_pcm_hw_constraints_complete(substream); | |
2076 | if (err < 0) { | |
2077 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2078 | goto error; | |
2079 | } | |
2080 | ||
2081 | *rsubstream = substream; | |
1da177e4 | 2082 | return 0; |
3bf75f9b TI |
2083 | |
2084 | error: | |
2085 | snd_pcm_release_substream(substream); | |
2086 | return err; | |
1da177e4 LT |
2087 | } |
2088 | ||
e88e8ae6 TI |
2089 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2090 | ||
1da177e4 | 2091 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2092 | struct snd_pcm *pcm, |
ffd3d5c6 | 2093 | int stream) |
1da177e4 | 2094 | { |
877211f5 TI |
2095 | struct snd_pcm_file *pcm_file; |
2096 | struct snd_pcm_substream *substream; | |
3bf75f9b | 2097 | int err; |
1da177e4 | 2098 | |
3bf75f9b TI |
2099 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2100 | if (err < 0) | |
2101 | return err; | |
2102 | ||
548a648b TI |
2103 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
2104 | if (pcm_file == NULL) { | |
2105 | snd_pcm_release_substream(substream); | |
2106 | return -ENOMEM; | |
2107 | } | |
2108 | pcm_file->substream = substream; | |
2109 | if (substream->ref_count == 1) { | |
0df63e44 TI |
2110 | substream->file = pcm_file; |
2111 | substream->pcm_release = pcm_release_private; | |
1da177e4 | 2112 | } |
1da177e4 | 2113 | file->private_data = pcm_file; |
ffd3d5c6 | 2114 | |
1da177e4 LT |
2115 | return 0; |
2116 | } | |
2117 | ||
f87135f5 CL |
2118 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2119 | { | |
2120 | struct snd_pcm *pcm; | |
02f4865f TI |
2121 | int err = nonseekable_open(inode, file); |
2122 | if (err < 0) | |
2123 | return err; | |
f87135f5 CL |
2124 | pcm = snd_lookup_minor_data(iminor(inode), |
2125 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
a0830dbd | 2126 | err = snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); |
8bb4d9ce TI |
2127 | if (pcm) |
2128 | snd_card_unref(pcm->card); | |
a0830dbd | 2129 | return err; |
f87135f5 CL |
2130 | } |
2131 | ||
2132 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2133 | { |
877211f5 | 2134 | struct snd_pcm *pcm; |
02f4865f TI |
2135 | int err = nonseekable_open(inode, file); |
2136 | if (err < 0) | |
2137 | return err; | |
f87135f5 CL |
2138 | pcm = snd_lookup_minor_data(iminor(inode), |
2139 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
a0830dbd | 2140 | err = snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); |
8bb4d9ce TI |
2141 | if (pcm) |
2142 | snd_card_unref(pcm->card); | |
a0830dbd | 2143 | return err; |
f87135f5 CL |
2144 | } |
2145 | ||
2146 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2147 | { | |
2148 | int err; | |
1da177e4 LT |
2149 | wait_queue_t wait; |
2150 | ||
1da177e4 LT |
2151 | if (pcm == NULL) { |
2152 | err = -ENODEV; | |
2153 | goto __error1; | |
2154 | } | |
2155 | err = snd_card_file_add(pcm->card, file); | |
2156 | if (err < 0) | |
2157 | goto __error1; | |
2158 | if (!try_module_get(pcm->card->module)) { | |
2159 | err = -EFAULT; | |
2160 | goto __error2; | |
2161 | } | |
2162 | init_waitqueue_entry(&wait, current); | |
2163 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2164 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2165 | while (1) { |
ffd3d5c6 | 2166 | err = snd_pcm_open_file(file, pcm, stream); |
1da177e4 LT |
2167 | if (err >= 0) |
2168 | break; | |
2169 | if (err == -EAGAIN) { | |
2170 | if (file->f_flags & O_NONBLOCK) { | |
2171 | err = -EBUSY; | |
2172 | break; | |
2173 | } | |
2174 | } else | |
2175 | break; | |
2176 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2177 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2178 | schedule(); |
1a60d4c5 | 2179 | mutex_lock(&pcm->open_mutex); |
0914f796 TI |
2180 | if (pcm->card->shutdown) { |
2181 | err = -ENODEV; | |
2182 | break; | |
2183 | } | |
1da177e4 LT |
2184 | if (signal_pending(current)) { |
2185 | err = -ERESTARTSYS; | |
2186 | break; | |
2187 | } | |
2188 | } | |
2189 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2190 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2191 | if (err < 0) |
2192 | goto __error; | |
2193 | return err; | |
2194 | ||
2195 | __error: | |
2196 | module_put(pcm->card->module); | |
2197 | __error2: | |
2198 | snd_card_file_remove(pcm->card, file); | |
2199 | __error1: | |
2200 | return err; | |
2201 | } | |
2202 | ||
2203 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2204 | { | |
877211f5 TI |
2205 | struct snd_pcm *pcm; |
2206 | struct snd_pcm_substream *substream; | |
2207 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2208 | |
2209 | pcm_file = file->private_data; | |
2210 | substream = pcm_file->substream; | |
7eaa943c TI |
2211 | if (snd_BUG_ON(!substream)) |
2212 | return -ENXIO; | |
1da177e4 | 2213 | pcm = substream->pcm; |
1a60d4c5 | 2214 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2215 | snd_pcm_release_substream(substream); |
548a648b | 2216 | kfree(pcm_file); |
1a60d4c5 | 2217 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2218 | wake_up(&pcm->open_wait); |
2219 | module_put(pcm->card->module); | |
2220 | snd_card_file_remove(pcm->card, file); | |
2221 | return 0; | |
2222 | } | |
2223 | ||
877211f5 TI |
2224 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2225 | snd_pcm_uframes_t frames) | |
1da177e4 | 2226 | { |
877211f5 | 2227 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2228 | snd_pcm_sframes_t appl_ptr; |
2229 | snd_pcm_sframes_t ret; | |
2230 | snd_pcm_sframes_t hw_avail; | |
2231 | ||
2232 | if (frames == 0) | |
2233 | return 0; | |
2234 | ||
2235 | snd_pcm_stream_lock_irq(substream); | |
2236 | switch (runtime->status->state) { | |
2237 | case SNDRV_PCM_STATE_PREPARED: | |
2238 | break; | |
2239 | case SNDRV_PCM_STATE_DRAINING: | |
2240 | case SNDRV_PCM_STATE_RUNNING: | |
2241 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2242 | break; | |
2243 | /* Fall through */ | |
2244 | case SNDRV_PCM_STATE_XRUN: | |
2245 | ret = -EPIPE; | |
2246 | goto __end; | |
51840409 LR |
2247 | case SNDRV_PCM_STATE_SUSPENDED: |
2248 | ret = -ESTRPIPE; | |
2249 | goto __end; | |
1da177e4 LT |
2250 | default: |
2251 | ret = -EBADFD; | |
2252 | goto __end; | |
2253 | } | |
2254 | ||
2255 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2256 | if (hw_avail <= 0) { | |
2257 | ret = 0; | |
2258 | goto __end; | |
2259 | } | |
2260 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2261 | frames = hw_avail; | |
1da177e4 LT |
2262 | appl_ptr = runtime->control->appl_ptr - frames; |
2263 | if (appl_ptr < 0) | |
2264 | appl_ptr += runtime->boundary; | |
2265 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2266 | ret = frames; |
2267 | __end: | |
2268 | snd_pcm_stream_unlock_irq(substream); | |
2269 | return ret; | |
2270 | } | |
2271 | ||
877211f5 TI |
2272 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2273 | snd_pcm_uframes_t frames) | |
1da177e4 | 2274 | { |
877211f5 | 2275 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2276 | snd_pcm_sframes_t appl_ptr; |
2277 | snd_pcm_sframes_t ret; | |
2278 | snd_pcm_sframes_t hw_avail; | |
2279 | ||
2280 | if (frames == 0) | |
2281 | return 0; | |
2282 | ||
2283 | snd_pcm_stream_lock_irq(substream); | |
2284 | switch (runtime->status->state) { | |
2285 | case SNDRV_PCM_STATE_PREPARED: | |
2286 | case SNDRV_PCM_STATE_DRAINING: | |
2287 | break; | |
2288 | case SNDRV_PCM_STATE_RUNNING: | |
2289 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2290 | break; | |
2291 | /* Fall through */ | |
2292 | case SNDRV_PCM_STATE_XRUN: | |
2293 | ret = -EPIPE; | |
2294 | goto __end; | |
51840409 LR |
2295 | case SNDRV_PCM_STATE_SUSPENDED: |
2296 | ret = -ESTRPIPE; | |
2297 | goto __end; | |
1da177e4 LT |
2298 | default: |
2299 | ret = -EBADFD; | |
2300 | goto __end; | |
2301 | } | |
2302 | ||
2303 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2304 | if (hw_avail <= 0) { | |
2305 | ret = 0; | |
2306 | goto __end; | |
2307 | } | |
2308 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2309 | frames = hw_avail; | |
1da177e4 LT |
2310 | appl_ptr = runtime->control->appl_ptr - frames; |
2311 | if (appl_ptr < 0) | |
2312 | appl_ptr += runtime->boundary; | |
2313 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2314 | ret = frames; |
2315 | __end: | |
2316 | snd_pcm_stream_unlock_irq(substream); | |
2317 | return ret; | |
2318 | } | |
2319 | ||
877211f5 TI |
2320 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2321 | snd_pcm_uframes_t frames) | |
1da177e4 | 2322 | { |
877211f5 | 2323 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2324 | snd_pcm_sframes_t appl_ptr; |
2325 | snd_pcm_sframes_t ret; | |
2326 | snd_pcm_sframes_t avail; | |
2327 | ||
2328 | if (frames == 0) | |
2329 | return 0; | |
2330 | ||
2331 | snd_pcm_stream_lock_irq(substream); | |
2332 | switch (runtime->status->state) { | |
2333 | case SNDRV_PCM_STATE_PREPARED: | |
2334 | case SNDRV_PCM_STATE_PAUSED: | |
2335 | break; | |
2336 | case SNDRV_PCM_STATE_DRAINING: | |
2337 | case SNDRV_PCM_STATE_RUNNING: | |
2338 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2339 | break; | |
2340 | /* Fall through */ | |
2341 | case SNDRV_PCM_STATE_XRUN: | |
2342 | ret = -EPIPE; | |
2343 | goto __end; | |
51840409 LR |
2344 | case SNDRV_PCM_STATE_SUSPENDED: |
2345 | ret = -ESTRPIPE; | |
2346 | goto __end; | |
1da177e4 LT |
2347 | default: |
2348 | ret = -EBADFD; | |
2349 | goto __end; | |
2350 | } | |
2351 | ||
2352 | avail = snd_pcm_playback_avail(runtime); | |
2353 | if (avail <= 0) { | |
2354 | ret = 0; | |
2355 | goto __end; | |
2356 | } | |
2357 | if (frames > (snd_pcm_uframes_t)avail) | |
2358 | frames = avail; | |
1da177e4 LT |
2359 | appl_ptr = runtime->control->appl_ptr + frames; |
2360 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2361 | appl_ptr -= runtime->boundary; | |
2362 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2363 | ret = frames; |
2364 | __end: | |
2365 | snd_pcm_stream_unlock_irq(substream); | |
2366 | return ret; | |
2367 | } | |
2368 | ||
877211f5 TI |
2369 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2370 | snd_pcm_uframes_t frames) | |
1da177e4 | 2371 | { |
877211f5 | 2372 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2373 | snd_pcm_sframes_t appl_ptr; |
2374 | snd_pcm_sframes_t ret; | |
2375 | snd_pcm_sframes_t avail; | |
2376 | ||
2377 | if (frames == 0) | |
2378 | return 0; | |
2379 | ||
2380 | snd_pcm_stream_lock_irq(substream); | |
2381 | switch (runtime->status->state) { | |
2382 | case SNDRV_PCM_STATE_PREPARED: | |
2383 | case SNDRV_PCM_STATE_DRAINING: | |
2384 | case SNDRV_PCM_STATE_PAUSED: | |
2385 | break; | |
2386 | case SNDRV_PCM_STATE_RUNNING: | |
2387 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2388 | break; | |
2389 | /* Fall through */ | |
2390 | case SNDRV_PCM_STATE_XRUN: | |
2391 | ret = -EPIPE; | |
2392 | goto __end; | |
51840409 LR |
2393 | case SNDRV_PCM_STATE_SUSPENDED: |
2394 | ret = -ESTRPIPE; | |
2395 | goto __end; | |
1da177e4 LT |
2396 | default: |
2397 | ret = -EBADFD; | |
2398 | goto __end; | |
2399 | } | |
2400 | ||
2401 | avail = snd_pcm_capture_avail(runtime); | |
2402 | if (avail <= 0) { | |
2403 | ret = 0; | |
2404 | goto __end; | |
2405 | } | |
2406 | if (frames > (snd_pcm_uframes_t)avail) | |
2407 | frames = avail; | |
1da177e4 LT |
2408 | appl_ptr = runtime->control->appl_ptr + frames; |
2409 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2410 | appl_ptr -= runtime->boundary; | |
2411 | runtime->control->appl_ptr = appl_ptr; | |
1da177e4 LT |
2412 | ret = frames; |
2413 | __end: | |
2414 | snd_pcm_stream_unlock_irq(substream); | |
2415 | return ret; | |
2416 | } | |
2417 | ||
877211f5 | 2418 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2419 | { |
877211f5 | 2420 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2421 | int err; |
2422 | ||
2423 | snd_pcm_stream_lock_irq(substream); | |
2424 | switch (runtime->status->state) { | |
2425 | case SNDRV_PCM_STATE_DRAINING: | |
2426 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2427 | goto __badfd; | |
2428 | case SNDRV_PCM_STATE_RUNNING: | |
2429 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2430 | break; | |
2431 | /* Fall through */ | |
2432 | case SNDRV_PCM_STATE_PREPARED: | |
2433 | case SNDRV_PCM_STATE_SUSPENDED: | |
2434 | err = 0; | |
2435 | break; | |
2436 | case SNDRV_PCM_STATE_XRUN: | |
2437 | err = -EPIPE; | |
2438 | break; | |
2439 | default: | |
2440 | __badfd: | |
2441 | err = -EBADFD; | |
2442 | break; | |
2443 | } | |
2444 | snd_pcm_stream_unlock_irq(substream); | |
2445 | return err; | |
2446 | } | |
2447 | ||
877211f5 TI |
2448 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2449 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2450 | { |
877211f5 | 2451 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2452 | int err; |
2453 | snd_pcm_sframes_t n = 0; | |
2454 | ||
2455 | snd_pcm_stream_lock_irq(substream); | |
2456 | switch (runtime->status->state) { | |
2457 | case SNDRV_PCM_STATE_DRAINING: | |
2458 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2459 | goto __badfd; | |
2460 | case SNDRV_PCM_STATE_RUNNING: | |
2461 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2462 | break; | |
2463 | /* Fall through */ | |
2464 | case SNDRV_PCM_STATE_PREPARED: | |
2465 | case SNDRV_PCM_STATE_SUSPENDED: | |
2466 | err = 0; | |
2467 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2468 | n = snd_pcm_playback_hw_avail(runtime); | |
2469 | else | |
2470 | n = snd_pcm_capture_avail(runtime); | |
4bbe1ddf | 2471 | n += runtime->delay; |
1da177e4 LT |
2472 | break; |
2473 | case SNDRV_PCM_STATE_XRUN: | |
2474 | err = -EPIPE; | |
2475 | break; | |
2476 | default: | |
2477 | __badfd: | |
2478 | err = -EBADFD; | |
2479 | break; | |
2480 | } | |
2481 | snd_pcm_stream_unlock_irq(substream); | |
2482 | if (!err) | |
2483 | if (put_user(n, res)) | |
2484 | err = -EFAULT; | |
2485 | return err; | |
2486 | } | |
2487 | ||
877211f5 TI |
2488 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2489 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2490 | { |
877211f5 TI |
2491 | struct snd_pcm_runtime *runtime = substream->runtime; |
2492 | struct snd_pcm_sync_ptr sync_ptr; | |
2493 | volatile struct snd_pcm_mmap_status *status; | |
2494 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2495 | int err; |
2496 | ||
2497 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2498 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2499 | return -EFAULT; | |
877211f5 | 2500 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2501 | return -EFAULT; |
2502 | status = runtime->status; | |
2503 | control = runtime->control; | |
2504 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2505 | err = snd_pcm_hwsync(substream); | |
2506 | if (err < 0) | |
2507 | return err; | |
2508 | } | |
2509 | snd_pcm_stream_lock_irq(substream); | |
2510 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2511 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2512 | else | |
2513 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2514 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2515 | control->avail_min = sync_ptr.c.control.avail_min; | |
2516 | else | |
2517 | sync_ptr.c.control.avail_min = control->avail_min; | |
2518 | sync_ptr.s.status.state = status->state; | |
2519 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2520 | sync_ptr.s.status.tstamp = status->tstamp; | |
2521 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2522 | snd_pcm_stream_unlock_irq(substream); | |
2523 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2524 | return -EFAULT; | |
2525 | return 0; | |
2526 | } | |
b751eef1 JK |
2527 | |
2528 | static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg) | |
2529 | { | |
2530 | struct snd_pcm_runtime *runtime = substream->runtime; | |
2531 | int arg; | |
2532 | ||
2533 | if (get_user(arg, _arg)) | |
2534 | return -EFAULT; | |
2535 | if (arg < 0 || arg > SNDRV_PCM_TSTAMP_TYPE_LAST) | |
2536 | return -EINVAL; | |
2537 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY; | |
2538 | if (arg == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC) | |
2539 | runtime->tstamp_type = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC; | |
2540 | return 0; | |
2541 | } | |
1da177e4 | 2542 | |
0df63e44 TI |
2543 | static int snd_pcm_common_ioctl1(struct file *file, |
2544 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2545 | unsigned int cmd, void __user *arg) |
2546 | { | |
1da177e4 LT |
2547 | switch (cmd) { |
2548 | case SNDRV_PCM_IOCTL_PVERSION: | |
2549 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2550 | case SNDRV_PCM_IOCTL_INFO: | |
2551 | return snd_pcm_info_user(substream, arg); | |
28e9e473 JK |
2552 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
2553 | return 0; | |
b751eef1 JK |
2554 | case SNDRV_PCM_IOCTL_TTSTAMP: |
2555 | return snd_pcm_tstamp(substream, arg); | |
1da177e4 LT |
2556 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2557 | return snd_pcm_hw_refine_user(substream, arg); | |
2558 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2559 | return snd_pcm_hw_params_user(substream, arg); | |
2560 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2561 | return snd_pcm_hw_free(substream); | |
2562 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2563 | return snd_pcm_sw_params_user(substream, arg); | |
2564 | case SNDRV_PCM_IOCTL_STATUS: | |
2565 | return snd_pcm_status_user(substream, arg); | |
2566 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2567 | return snd_pcm_channel_info_user(substream, arg); | |
2568 | case SNDRV_PCM_IOCTL_PREPARE: | |
0df63e44 | 2569 | return snd_pcm_prepare(substream, file); |
1da177e4 LT |
2570 | case SNDRV_PCM_IOCTL_RESET: |
2571 | return snd_pcm_reset(substream); | |
2572 | case SNDRV_PCM_IOCTL_START: | |
2573 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2574 | case SNDRV_PCM_IOCTL_LINK: | |
2575 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2576 | case SNDRV_PCM_IOCTL_UNLINK: | |
2577 | return snd_pcm_unlink(substream); | |
2578 | case SNDRV_PCM_IOCTL_RESUME: | |
2579 | return snd_pcm_resume(substream); | |
2580 | case SNDRV_PCM_IOCTL_XRUN: | |
2581 | return snd_pcm_xrun(substream); | |
2582 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2583 | return snd_pcm_hwsync(substream); | |
2584 | case SNDRV_PCM_IOCTL_DELAY: | |
2585 | return snd_pcm_delay(substream, arg); | |
2586 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2587 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2588 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2589 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2590 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2591 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2592 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2593 | #endif |
1da177e4 | 2594 | case SNDRV_PCM_IOCTL_DRAIN: |
4cdc115f | 2595 | return snd_pcm_drain(substream, file); |
1da177e4 LT |
2596 | case SNDRV_PCM_IOCTL_DROP: |
2597 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2598 | case SNDRV_PCM_IOCTL_PAUSE: |
2599 | { | |
2600 | int res; | |
2601 | snd_pcm_stream_lock_irq(substream); | |
2602 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2603 | snd_pcm_stream_unlock_irq(substream); | |
2604 | return res; | |
2605 | } | |
1da177e4 LT |
2606 | } |
2607 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2608 | return -ENOTTY; | |
2609 | } | |
2610 | ||
0df63e44 TI |
2611 | static int snd_pcm_playback_ioctl1(struct file *file, |
2612 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2613 | unsigned int cmd, void __user *arg) |
2614 | { | |
7eaa943c TI |
2615 | if (snd_BUG_ON(!substream)) |
2616 | return -ENXIO; | |
2617 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
2618 | return -EINVAL; | |
1da177e4 LT |
2619 | switch (cmd) { |
2620 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2621 | { | |
877211f5 TI |
2622 | struct snd_xferi xferi; |
2623 | struct snd_xferi __user *_xferi = arg; | |
2624 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2625 | snd_pcm_sframes_t result; |
2626 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2627 | return -EBADFD; | |
2628 | if (put_user(0, &_xferi->result)) | |
2629 | return -EFAULT; | |
2630 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2631 | return -EFAULT; | |
2632 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2633 | __put_user(result, &_xferi->result); | |
2634 | return result < 0 ? result : 0; | |
2635 | } | |
2636 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2637 | { | |
877211f5 TI |
2638 | struct snd_xfern xfern; |
2639 | struct snd_xfern __user *_xfern = arg; | |
2640 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2641 | void __user **bufs; |
2642 | snd_pcm_sframes_t result; | |
2643 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2644 | return -EBADFD; | |
2645 | if (runtime->channels > 128) | |
2646 | return -EINVAL; | |
2647 | if (put_user(0, &_xfern->result)) | |
2648 | return -EFAULT; | |
2649 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2650 | return -EFAULT; | |
ef44a1ec LZ |
2651 | |
2652 | bufs = memdup_user(xfern.bufs, | |
2653 | sizeof(void *) * runtime->channels); | |
2654 | if (IS_ERR(bufs)) | |
2655 | return PTR_ERR(bufs); | |
1da177e4 LT |
2656 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); |
2657 | kfree(bufs); | |
2658 | __put_user(result, &_xfern->result); | |
2659 | return result < 0 ? result : 0; | |
2660 | } | |
2661 | case SNDRV_PCM_IOCTL_REWIND: | |
2662 | { | |
2663 | snd_pcm_uframes_t frames; | |
2664 | snd_pcm_uframes_t __user *_frames = arg; | |
2665 | snd_pcm_sframes_t result; | |
2666 | if (get_user(frames, _frames)) | |
2667 | return -EFAULT; | |
2668 | if (put_user(0, _frames)) | |
2669 | return -EFAULT; | |
2670 | result = snd_pcm_playback_rewind(substream, frames); | |
2671 | __put_user(result, _frames); | |
2672 | return result < 0 ? result : 0; | |
2673 | } | |
2674 | case SNDRV_PCM_IOCTL_FORWARD: | |
2675 | { | |
2676 | snd_pcm_uframes_t frames; | |
2677 | snd_pcm_uframes_t __user *_frames = arg; | |
2678 | snd_pcm_sframes_t result; | |
2679 | if (get_user(frames, _frames)) | |
2680 | return -EFAULT; | |
2681 | if (put_user(0, _frames)) | |
2682 | return -EFAULT; | |
2683 | result = snd_pcm_playback_forward(substream, frames); | |
2684 | __put_user(result, _frames); | |
2685 | return result < 0 ? result : 0; | |
2686 | } | |
1da177e4 | 2687 | } |
0df63e44 | 2688 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2689 | } |
2690 | ||
0df63e44 TI |
2691 | static int snd_pcm_capture_ioctl1(struct file *file, |
2692 | struct snd_pcm_substream *substream, | |
1da177e4 LT |
2693 | unsigned int cmd, void __user *arg) |
2694 | { | |
7eaa943c TI |
2695 | if (snd_BUG_ON(!substream)) |
2696 | return -ENXIO; | |
2697 | if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE)) | |
2698 | return -EINVAL; | |
1da177e4 LT |
2699 | switch (cmd) { |
2700 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2701 | { | |
877211f5 TI |
2702 | struct snd_xferi xferi; |
2703 | struct snd_xferi __user *_xferi = arg; | |
2704 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2705 | snd_pcm_sframes_t result; |
2706 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2707 | return -EBADFD; | |
2708 | if (put_user(0, &_xferi->result)) | |
2709 | return -EFAULT; | |
2710 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2711 | return -EFAULT; | |
2712 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2713 | __put_user(result, &_xferi->result); | |
2714 | return result < 0 ? result : 0; | |
2715 | } | |
2716 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2717 | { | |
877211f5 TI |
2718 | struct snd_xfern xfern; |
2719 | struct snd_xfern __user *_xfern = arg; | |
2720 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2721 | void *bufs; |
2722 | snd_pcm_sframes_t result; | |
2723 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2724 | return -EBADFD; | |
2725 | if (runtime->channels > 128) | |
2726 | return -EINVAL; | |
2727 | if (put_user(0, &_xfern->result)) | |
2728 | return -EFAULT; | |
2729 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2730 | return -EFAULT; | |
ef44a1ec LZ |
2731 | |
2732 | bufs = memdup_user(xfern.bufs, | |
2733 | sizeof(void *) * runtime->channels); | |
2734 | if (IS_ERR(bufs)) | |
2735 | return PTR_ERR(bufs); | |
1da177e4 LT |
2736 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); |
2737 | kfree(bufs); | |
2738 | __put_user(result, &_xfern->result); | |
2739 | return result < 0 ? result : 0; | |
2740 | } | |
2741 | case SNDRV_PCM_IOCTL_REWIND: | |
2742 | { | |
2743 | snd_pcm_uframes_t frames; | |
2744 | snd_pcm_uframes_t __user *_frames = arg; | |
2745 | snd_pcm_sframes_t result; | |
2746 | if (get_user(frames, _frames)) | |
2747 | return -EFAULT; | |
2748 | if (put_user(0, _frames)) | |
2749 | return -EFAULT; | |
2750 | result = snd_pcm_capture_rewind(substream, frames); | |
2751 | __put_user(result, _frames); | |
2752 | return result < 0 ? result : 0; | |
2753 | } | |
2754 | case SNDRV_PCM_IOCTL_FORWARD: | |
2755 | { | |
2756 | snd_pcm_uframes_t frames; | |
2757 | snd_pcm_uframes_t __user *_frames = arg; | |
2758 | snd_pcm_sframes_t result; | |
2759 | if (get_user(frames, _frames)) | |
2760 | return -EFAULT; | |
2761 | if (put_user(0, _frames)) | |
2762 | return -EFAULT; | |
2763 | result = snd_pcm_capture_forward(substream, frames); | |
2764 | __put_user(result, _frames); | |
2765 | return result < 0 ? result : 0; | |
2766 | } | |
2767 | } | |
0df63e44 | 2768 | return snd_pcm_common_ioctl1(file, substream, cmd, arg); |
1da177e4 LT |
2769 | } |
2770 | ||
877211f5 TI |
2771 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2772 | unsigned long arg) | |
1da177e4 | 2773 | { |
877211f5 | 2774 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2775 | |
2776 | pcm_file = file->private_data; | |
2777 | ||
2778 | if (((cmd >> 8) & 0xff) != 'A') | |
2779 | return -ENOTTY; | |
2780 | ||
0df63e44 TI |
2781 | return snd_pcm_playback_ioctl1(file, pcm_file->substream, cmd, |
2782 | (void __user *)arg); | |
1da177e4 LT |
2783 | } |
2784 | ||
877211f5 TI |
2785 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2786 | unsigned long arg) | |
1da177e4 | 2787 | { |
877211f5 | 2788 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2789 | |
2790 | pcm_file = file->private_data; | |
2791 | ||
2792 | if (((cmd >> 8) & 0xff) != 'A') | |
2793 | return -ENOTTY; | |
2794 | ||
0df63e44 TI |
2795 | return snd_pcm_capture_ioctl1(file, pcm_file->substream, cmd, |
2796 | (void __user *)arg); | |
1da177e4 LT |
2797 | } |
2798 | ||
bf1bbb5a TI |
2799 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2800 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2801 | { |
2802 | mm_segment_t fs; | |
2803 | int result; | |
2804 | ||
2805 | fs = snd_enter_user(); | |
1da177e4 LT |
2806 | switch (substream->stream) { |
2807 | case SNDRV_PCM_STREAM_PLAYBACK: | |
0df63e44 TI |
2808 | result = snd_pcm_playback_ioctl1(NULL, substream, cmd, |
2809 | (void __user *)arg); | |
bf1bbb5a | 2810 | break; |
1da177e4 | 2811 | case SNDRV_PCM_STREAM_CAPTURE: |
0df63e44 TI |
2812 | result = snd_pcm_capture_ioctl1(NULL, substream, cmd, |
2813 | (void __user *)arg); | |
bf1bbb5a | 2814 | break; |
1da177e4 | 2815 | default: |
bf1bbb5a TI |
2816 | result = -EINVAL; |
2817 | break; | |
1da177e4 | 2818 | } |
bf1bbb5a TI |
2819 | snd_leave_user(fs); |
2820 | return result; | |
1da177e4 LT |
2821 | } |
2822 | ||
e88e8ae6 TI |
2823 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2824 | ||
877211f5 TI |
2825 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2826 | loff_t * offset) | |
1da177e4 | 2827 | { |
877211f5 TI |
2828 | struct snd_pcm_file *pcm_file; |
2829 | struct snd_pcm_substream *substream; | |
2830 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2831 | snd_pcm_sframes_t result; |
2832 | ||
2833 | pcm_file = file->private_data; | |
2834 | substream = pcm_file->substream; | |
7eaa943c TI |
2835 | if (PCM_RUNTIME_CHECK(substream)) |
2836 | return -ENXIO; | |
1da177e4 LT |
2837 | runtime = substream->runtime; |
2838 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2839 | return -EBADFD; | |
2840 | if (!frame_aligned(runtime, count)) | |
2841 | return -EINVAL; | |
2842 | count = bytes_to_frames(runtime, count); | |
2843 | result = snd_pcm_lib_read(substream, buf, count); | |
2844 | if (result > 0) | |
2845 | result = frames_to_bytes(runtime, result); | |
2846 | return result; | |
2847 | } | |
2848 | ||
877211f5 TI |
2849 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2850 | size_t count, loff_t * offset) | |
1da177e4 | 2851 | { |
877211f5 TI |
2852 | struct snd_pcm_file *pcm_file; |
2853 | struct snd_pcm_substream *substream; | |
2854 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2855 | snd_pcm_sframes_t result; |
2856 | ||
2857 | pcm_file = file->private_data; | |
2858 | substream = pcm_file->substream; | |
7eaa943c TI |
2859 | if (PCM_RUNTIME_CHECK(substream)) |
2860 | return -ENXIO; | |
1da177e4 | 2861 | runtime = substream->runtime; |
7eaa943c TI |
2862 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2863 | return -EBADFD; | |
2864 | if (!frame_aligned(runtime, count)) | |
2865 | return -EINVAL; | |
1da177e4 LT |
2866 | count = bytes_to_frames(runtime, count); |
2867 | result = snd_pcm_lib_write(substream, buf, count); | |
2868 | if (result > 0) | |
2869 | result = frames_to_bytes(runtime, result); | |
1da177e4 LT |
2870 | return result; |
2871 | } | |
2872 | ||
ee0b3e67 BP |
2873 | static ssize_t snd_pcm_aio_read(struct kiocb *iocb, const struct iovec *iov, |
2874 | unsigned long nr_segs, loff_t pos) | |
1da177e4 LT |
2875 | |
2876 | { | |
877211f5 TI |
2877 | struct snd_pcm_file *pcm_file; |
2878 | struct snd_pcm_substream *substream; | |
2879 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2880 | snd_pcm_sframes_t result; |
2881 | unsigned long i; | |
2882 | void __user **bufs; | |
2883 | snd_pcm_uframes_t frames; | |
2884 | ||
ee0b3e67 | 2885 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2886 | substream = pcm_file->substream; |
7eaa943c TI |
2887 | if (PCM_RUNTIME_CHECK(substream)) |
2888 | return -ENXIO; | |
1da177e4 LT |
2889 | runtime = substream->runtime; |
2890 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2891 | return -EBADFD; | |
ee0b3e67 | 2892 | if (nr_segs > 1024 || nr_segs != runtime->channels) |
1da177e4 | 2893 | return -EINVAL; |
ee0b3e67 | 2894 | if (!frame_aligned(runtime, iov->iov_len)) |
1da177e4 | 2895 | return -EINVAL; |
ee0b3e67 BP |
2896 | frames = bytes_to_samples(runtime, iov->iov_len); |
2897 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2898 | if (bufs == NULL) |
2899 | return -ENOMEM; | |
ee0b3e67 BP |
2900 | for (i = 0; i < nr_segs; ++i) |
2901 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2902 | result = snd_pcm_lib_readv(substream, bufs, frames); |
2903 | if (result > 0) | |
2904 | result = frames_to_bytes(runtime, result); | |
2905 | kfree(bufs); | |
2906 | return result; | |
2907 | } | |
2908 | ||
ee0b3e67 BP |
2909 | static ssize_t snd_pcm_aio_write(struct kiocb *iocb, const struct iovec *iov, |
2910 | unsigned long nr_segs, loff_t pos) | |
1da177e4 | 2911 | { |
877211f5 TI |
2912 | struct snd_pcm_file *pcm_file; |
2913 | struct snd_pcm_substream *substream; | |
2914 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2915 | snd_pcm_sframes_t result; |
2916 | unsigned long i; | |
2917 | void __user **bufs; | |
2918 | snd_pcm_uframes_t frames; | |
2919 | ||
ee0b3e67 | 2920 | pcm_file = iocb->ki_filp->private_data; |
1da177e4 | 2921 | substream = pcm_file->substream; |
7eaa943c TI |
2922 | if (PCM_RUNTIME_CHECK(substream)) |
2923 | return -ENXIO; | |
1da177e4 | 2924 | runtime = substream->runtime; |
7eaa943c TI |
2925 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
2926 | return -EBADFD; | |
ee0b3e67 | 2927 | if (nr_segs > 128 || nr_segs != runtime->channels || |
7eaa943c TI |
2928 | !frame_aligned(runtime, iov->iov_len)) |
2929 | return -EINVAL; | |
ee0b3e67 BP |
2930 | frames = bytes_to_samples(runtime, iov->iov_len); |
2931 | bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL); | |
1da177e4 LT |
2932 | if (bufs == NULL) |
2933 | return -ENOMEM; | |
ee0b3e67 BP |
2934 | for (i = 0; i < nr_segs; ++i) |
2935 | bufs[i] = iov[i].iov_base; | |
1da177e4 LT |
2936 | result = snd_pcm_lib_writev(substream, bufs, frames); |
2937 | if (result > 0) | |
2938 | result = frames_to_bytes(runtime, result); | |
2939 | kfree(bufs); | |
1da177e4 LT |
2940 | return result; |
2941 | } | |
2942 | ||
2943 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2944 | { | |
877211f5 TI |
2945 | struct snd_pcm_file *pcm_file; |
2946 | struct snd_pcm_substream *substream; | |
2947 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2948 | unsigned int mask; |
2949 | snd_pcm_uframes_t avail; | |
2950 | ||
2951 | pcm_file = file->private_data; | |
2952 | ||
2953 | substream = pcm_file->substream; | |
7eaa943c TI |
2954 | if (PCM_RUNTIME_CHECK(substream)) |
2955 | return -ENXIO; | |
1da177e4 LT |
2956 | runtime = substream->runtime; |
2957 | ||
2958 | poll_wait(file, &runtime->sleep, wait); | |
2959 | ||
2960 | snd_pcm_stream_lock_irq(substream); | |
2961 | avail = snd_pcm_playback_avail(runtime); | |
2962 | switch (runtime->status->state) { | |
2963 | case SNDRV_PCM_STATE_RUNNING: | |
2964 | case SNDRV_PCM_STATE_PREPARED: | |
2965 | case SNDRV_PCM_STATE_PAUSED: | |
2966 | if (avail >= runtime->control->avail_min) { | |
2967 | mask = POLLOUT | POLLWRNORM; | |
2968 | break; | |
2969 | } | |
2970 | /* Fall through */ | |
2971 | case SNDRV_PCM_STATE_DRAINING: | |
2972 | mask = 0; | |
2973 | break; | |
2974 | default: | |
2975 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2976 | break; | |
2977 | } | |
2978 | snd_pcm_stream_unlock_irq(substream); | |
2979 | return mask; | |
2980 | } | |
2981 | ||
2982 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2983 | { | |
877211f5 TI |
2984 | struct snd_pcm_file *pcm_file; |
2985 | struct snd_pcm_substream *substream; | |
2986 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2987 | unsigned int mask; |
2988 | snd_pcm_uframes_t avail; | |
2989 | ||
2990 | pcm_file = file->private_data; | |
2991 | ||
2992 | substream = pcm_file->substream; | |
7eaa943c TI |
2993 | if (PCM_RUNTIME_CHECK(substream)) |
2994 | return -ENXIO; | |
1da177e4 LT |
2995 | runtime = substream->runtime; |
2996 | ||
2997 | poll_wait(file, &runtime->sleep, wait); | |
2998 | ||
2999 | snd_pcm_stream_lock_irq(substream); | |
3000 | avail = snd_pcm_capture_avail(runtime); | |
3001 | switch (runtime->status->state) { | |
3002 | case SNDRV_PCM_STATE_RUNNING: | |
3003 | case SNDRV_PCM_STATE_PREPARED: | |
3004 | case SNDRV_PCM_STATE_PAUSED: | |
3005 | if (avail >= runtime->control->avail_min) { | |
3006 | mask = POLLIN | POLLRDNORM; | |
3007 | break; | |
3008 | } | |
3009 | mask = 0; | |
3010 | break; | |
3011 | case SNDRV_PCM_STATE_DRAINING: | |
3012 | if (avail > 0) { | |
3013 | mask = POLLIN | POLLRDNORM; | |
3014 | break; | |
3015 | } | |
3016 | /* Fall through */ | |
3017 | default: | |
3018 | mask = POLLIN | POLLRDNORM | POLLERR; | |
3019 | break; | |
3020 | } | |
3021 | snd_pcm_stream_unlock_irq(substream); | |
3022 | return mask; | |
3023 | } | |
3024 | ||
3025 | /* | |
3026 | * mmap support | |
3027 | */ | |
3028 | ||
3029 | /* | |
3030 | * Only on coherent architectures, we can mmap the status and the control records | |
3031 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
3032 | */ | |
3033 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
3034 | /* | |
3035 | * mmap status record | |
3036 | */ | |
3ad5afcd NP |
3037 | static int snd_pcm_mmap_status_fault(struct vm_area_struct *area, |
3038 | struct vm_fault *vmf) | |
1da177e4 | 3039 | { |
877211f5 TI |
3040 | struct snd_pcm_substream *substream = area->vm_private_data; |
3041 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3042 | |
3043 | if (substream == NULL) | |
3ad5afcd | 3044 | return VM_FAULT_SIGBUS; |
1da177e4 | 3045 | runtime = substream->runtime; |
3ad5afcd NP |
3046 | vmf->page = virt_to_page(runtime->status); |
3047 | get_page(vmf->page); | |
3048 | return 0; | |
1da177e4 LT |
3049 | } |
3050 | ||
f0f37e2f | 3051 | static const struct vm_operations_struct snd_pcm_vm_ops_status = |
1da177e4 | 3052 | { |
3ad5afcd | 3053 | .fault = snd_pcm_mmap_status_fault, |
1da177e4 LT |
3054 | }; |
3055 | ||
877211f5 | 3056 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3057 | struct vm_area_struct *area) |
3058 | { | |
1da177e4 LT |
3059 | long size; |
3060 | if (!(area->vm_flags & VM_READ)) | |
3061 | return -EINVAL; | |
1da177e4 | 3062 | size = area->vm_end - area->vm_start; |
877211f5 | 3063 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3064 | return -EINVAL; |
3065 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3066 | area->vm_private_data = substream; | |
314e51b9 | 3067 | area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; |
1da177e4 LT |
3068 | return 0; |
3069 | } | |
3070 | ||
3071 | /* | |
3072 | * mmap control record | |
3073 | */ | |
3ad5afcd NP |
3074 | static int snd_pcm_mmap_control_fault(struct vm_area_struct *area, |
3075 | struct vm_fault *vmf) | |
1da177e4 | 3076 | { |
877211f5 TI |
3077 | struct snd_pcm_substream *substream = area->vm_private_data; |
3078 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3079 | |
3080 | if (substream == NULL) | |
3ad5afcd | 3081 | return VM_FAULT_SIGBUS; |
1da177e4 | 3082 | runtime = substream->runtime; |
3ad5afcd NP |
3083 | vmf->page = virt_to_page(runtime->control); |
3084 | get_page(vmf->page); | |
3085 | return 0; | |
1da177e4 LT |
3086 | } |
3087 | ||
f0f37e2f | 3088 | static const struct vm_operations_struct snd_pcm_vm_ops_control = |
1da177e4 | 3089 | { |
3ad5afcd | 3090 | .fault = snd_pcm_mmap_control_fault, |
1da177e4 LT |
3091 | }; |
3092 | ||
877211f5 | 3093 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3094 | struct vm_area_struct *area) |
3095 | { | |
1da177e4 LT |
3096 | long size; |
3097 | if (!(area->vm_flags & VM_READ)) | |
3098 | return -EINVAL; | |
1da177e4 | 3099 | size = area->vm_end - area->vm_start; |
877211f5 | 3100 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3101 | return -EINVAL; |
3102 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3103 | area->vm_private_data = substream; | |
314e51b9 | 3104 | area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; |
1da177e4 LT |
3105 | return 0; |
3106 | } | |
3107 | #else /* ! coherent mmap */ | |
3108 | /* | |
3109 | * don't support mmap for status and control records. | |
3110 | */ | |
877211f5 | 3111 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3112 | struct vm_area_struct *area) |
3113 | { | |
3114 | return -ENXIO; | |
3115 | } | |
877211f5 | 3116 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3117 | struct vm_area_struct *area) |
3118 | { | |
3119 | return -ENXIO; | |
3120 | } | |
3121 | #endif /* coherent mmap */ | |
3122 | ||
9eb4a067 TI |
3123 | static inline struct page * |
3124 | snd_pcm_default_page_ops(struct snd_pcm_substream *substream, unsigned long ofs) | |
3125 | { | |
3126 | void *vaddr = substream->runtime->dma_area + ofs; | |
66b6cfac TI |
3127 | #if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT) |
3128 | if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) | |
3129 | return virt_to_page(CAC_ADDR(vaddr)); | |
6985c887 TI |
3130 | #endif |
3131 | #if defined(CONFIG_PPC32) && defined(CONFIG_NOT_COHERENT_CACHE) | |
3132 | if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) { | |
3133 | dma_addr_t addr = substream->runtime->dma_addr + ofs; | |
3134 | addr -= get_dma_offset(substream->dma_buffer.dev.dev); | |
3135 | /* assume dma_handle set via pfn_to_phys() in | |
3136 | * mm/dma-noncoherent.c | |
3137 | */ | |
3138 | return pfn_to_page(addr >> PAGE_SHIFT); | |
3139 | } | |
66b6cfac | 3140 | #endif |
9eb4a067 TI |
3141 | return virt_to_page(vaddr); |
3142 | } | |
3143 | ||
1da177e4 | 3144 | /* |
3ad5afcd | 3145 | * fault callback for mmapping a RAM page |
1da177e4 | 3146 | */ |
3ad5afcd NP |
3147 | static int snd_pcm_mmap_data_fault(struct vm_area_struct *area, |
3148 | struct vm_fault *vmf) | |
1da177e4 | 3149 | { |
877211f5 TI |
3150 | struct snd_pcm_substream *substream = area->vm_private_data; |
3151 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3152 | unsigned long offset; |
3153 | struct page * page; | |
1da177e4 LT |
3154 | size_t dma_bytes; |
3155 | ||
3156 | if (substream == NULL) | |
3ad5afcd | 3157 | return VM_FAULT_SIGBUS; |
1da177e4 | 3158 | runtime = substream->runtime; |
3ad5afcd | 3159 | offset = vmf->pgoff << PAGE_SHIFT; |
1da177e4 LT |
3160 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
3161 | if (offset > dma_bytes - PAGE_SIZE) | |
3ad5afcd | 3162 | return VM_FAULT_SIGBUS; |
9eb4a067 | 3163 | if (substream->ops->page) |
1da177e4 | 3164 | page = substream->ops->page(substream, offset); |
9eb4a067 TI |
3165 | else |
3166 | page = snd_pcm_default_page_ops(substream, offset); | |
3167 | if (!page) | |
3168 | return VM_FAULT_SIGBUS; | |
b5810039 | 3169 | get_page(page); |
3ad5afcd NP |
3170 | vmf->page = page; |
3171 | return 0; | |
1da177e4 LT |
3172 | } |
3173 | ||
657b1989 TI |
3174 | static const struct vm_operations_struct snd_pcm_vm_ops_data = { |
3175 | .open = snd_pcm_mmap_data_open, | |
3176 | .close = snd_pcm_mmap_data_close, | |
3177 | }; | |
3178 | ||
3179 | static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = { | |
1da177e4 LT |
3180 | .open = snd_pcm_mmap_data_open, |
3181 | .close = snd_pcm_mmap_data_close, | |
3ad5afcd | 3182 | .fault = snd_pcm_mmap_data_fault, |
1da177e4 LT |
3183 | }; |
3184 | ||
657b1989 TI |
3185 | #ifndef ARCH_HAS_DMA_MMAP_COHERENT |
3186 | /* This should be defined / handled globally! */ | |
3187 | #ifdef CONFIG_ARM | |
3188 | #define ARCH_HAS_DMA_MMAP_COHERENT | |
3189 | #endif | |
3190 | #endif | |
3191 | ||
1da177e4 LT |
3192 | /* |
3193 | * mmap the DMA buffer on RAM | |
3194 | */ | |
18a2b962 TI |
3195 | int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream, |
3196 | struct vm_area_struct *area) | |
1da177e4 | 3197 | { |
314e51b9 | 3198 | area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; |
657b1989 TI |
3199 | #ifdef ARCH_HAS_DMA_MMAP_COHERENT |
3200 | if (!substream->ops->page && | |
3201 | substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) | |
3202 | return dma_mmap_coherent(substream->dma_buffer.dev.dev, | |
3203 | area, | |
3204 | substream->runtime->dma_area, | |
3205 | substream->runtime->dma_addr, | |
3206 | area->vm_end - area->vm_start); | |
9fe17b5d TI |
3207 | #elif defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT) |
3208 | if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV && | |
3209 | !plat_device_is_coherent(substream->dma_buffer.dev.dev)) | |
3210 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
657b1989 TI |
3211 | #endif /* ARCH_HAS_DMA_MMAP_COHERENT */ |
3212 | /* mmap with fault handler */ | |
3213 | area->vm_ops = &snd_pcm_vm_ops_data_fault; | |
1da177e4 LT |
3214 | return 0; |
3215 | } | |
18a2b962 | 3216 | EXPORT_SYMBOL_GPL(snd_pcm_lib_default_mmap); |
1da177e4 LT |
3217 | |
3218 | /* | |
3219 | * mmap the DMA buffer on I/O memory area | |
3220 | */ | |
3221 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
877211f5 TI |
3222 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3223 | struct vm_area_struct *area) | |
1da177e4 LT |
3224 | { |
3225 | long size; | |
3226 | unsigned long offset; | |
3227 | ||
1da177e4 | 3228 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); |
1da177e4 LT |
3229 | area->vm_flags |= VM_IO; |
3230 | size = area->vm_end - area->vm_start; | |
3231 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3232 | if (io_remap_pfn_range(area, area->vm_start, | |
3233 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3234 | size, area->vm_page_prot)) | |
3235 | return -EAGAIN; | |
1da177e4 LT |
3236 | return 0; |
3237 | } | |
e88e8ae6 TI |
3238 | |
3239 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3240 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3241 | ||
3242 | /* | |
3243 | * mmap DMA buffer | |
3244 | */ | |
877211f5 | 3245 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3246 | struct vm_area_struct *area) |
3247 | { | |
877211f5 | 3248 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3249 | long size; |
3250 | unsigned long offset; | |
3251 | size_t dma_bytes; | |
657b1989 | 3252 | int err; |
1da177e4 LT |
3253 | |
3254 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3255 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3256 | return -EINVAL; | |
3257 | } else { | |
3258 | if (!(area->vm_flags & VM_READ)) | |
3259 | return -EINVAL; | |
3260 | } | |
3261 | runtime = substream->runtime; | |
1da177e4 LT |
3262 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
3263 | return -EBADFD; | |
3264 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3265 | return -ENXIO; | |
3266 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3267 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3268 | return -EINVAL; | |
3269 | size = area->vm_end - area->vm_start; | |
3270 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3271 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3272 | if ((size_t)size > dma_bytes) | |
3273 | return -EINVAL; | |
3274 | if (offset > dma_bytes - size) | |
3275 | return -EINVAL; | |
3276 | ||
657b1989 TI |
3277 | area->vm_ops = &snd_pcm_vm_ops_data; |
3278 | area->vm_private_data = substream; | |
1da177e4 | 3279 | if (substream->ops->mmap) |
657b1989 | 3280 | err = substream->ops->mmap(substream, area); |
1da177e4 | 3281 | else |
18a2b962 | 3282 | err = snd_pcm_lib_default_mmap(substream, area); |
657b1989 TI |
3283 | if (!err) |
3284 | atomic_inc(&substream->mmap_count); | |
3285 | return err; | |
1da177e4 LT |
3286 | } |
3287 | ||
e88e8ae6 TI |
3288 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3289 | ||
1da177e4 LT |
3290 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3291 | { | |
877211f5 TI |
3292 | struct snd_pcm_file * pcm_file; |
3293 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3294 | unsigned long offset; |
3295 | ||
3296 | pcm_file = file->private_data; | |
3297 | substream = pcm_file->substream; | |
7eaa943c TI |
3298 | if (PCM_RUNTIME_CHECK(substream)) |
3299 | return -ENXIO; | |
1da177e4 LT |
3300 | |
3301 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3302 | switch (offset) { | |
3303 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
548a648b | 3304 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3305 | return -ENXIO; |
3306 | return snd_pcm_mmap_status(substream, file, area); | |
3307 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
548a648b | 3308 | if (pcm_file->no_compat_mmap) |
1da177e4 LT |
3309 | return -ENXIO; |
3310 | return snd_pcm_mmap_control(substream, file, area); | |
3311 | default: | |
3312 | return snd_pcm_mmap_data(substream, file, area); | |
3313 | } | |
3314 | return 0; | |
3315 | } | |
3316 | ||
3317 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3318 | { | |
877211f5 TI |
3319 | struct snd_pcm_file * pcm_file; |
3320 | struct snd_pcm_substream *substream; | |
3321 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3322 | |
3323 | pcm_file = file->private_data; | |
3324 | substream = pcm_file->substream; | |
7eaa943c | 3325 | if (PCM_RUNTIME_CHECK(substream)) |
d05468b7 | 3326 | return -ENXIO; |
1da177e4 | 3327 | runtime = substream->runtime; |
d05468b7 | 3328 | return fasync_helper(fd, file, on, &runtime->fasync); |
1da177e4 LT |
3329 | } |
3330 | ||
3331 | /* | |
3332 | * ioctl32 compat | |
3333 | */ | |
3334 | #ifdef CONFIG_COMPAT | |
3335 | #include "pcm_compat.c" | |
3336 | #else | |
3337 | #define snd_pcm_ioctl_compat NULL | |
3338 | #endif | |
3339 | ||
3340 | /* | |
3341 | * To be removed helpers to keep binary compatibility | |
3342 | */ | |
3343 | ||
59d48582 | 3344 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3345 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3346 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3347 | ||
877211f5 TI |
3348 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3349 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3350 | { |
3351 | unsigned int i; | |
3352 | ||
3353 | memset(params, 0, sizeof(*params)); | |
3354 | params->flags = oparams->flags; | |
3355 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3356 | params->masks[i].bits[0] = oparams->masks[i]; | |
3357 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3358 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3359 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3360 | params->info = oparams->info; | |
3361 | params->msbits = oparams->msbits; | |
3362 | params->rate_num = oparams->rate_num; | |
3363 | params->rate_den = oparams->rate_den; | |
3364 | params->fifo_size = oparams->fifo_size; | |
3365 | } | |
3366 | ||
877211f5 TI |
3367 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3368 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3369 | { |
3370 | unsigned int i; | |
3371 | ||
3372 | memset(oparams, 0, sizeof(*oparams)); | |
3373 | oparams->flags = params->flags; | |
3374 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3375 | oparams->masks[i] = params->masks[i].bits[0]; | |
3376 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3377 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3378 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3379 | oparams->info = params->info; | |
3380 | oparams->msbits = params->msbits; | |
3381 | oparams->rate_num = params->rate_num; | |
3382 | oparams->rate_den = params->rate_den; | |
3383 | oparams->fifo_size = params->fifo_size; | |
3384 | } | |
3385 | ||
877211f5 TI |
3386 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3387 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3388 | { |
877211f5 TI |
3389 | struct snd_pcm_hw_params *params; |
3390 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3391 | int err; |
3392 | ||
3393 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3394 | if (!params) |
3395 | return -ENOMEM; | |
1da177e4 | 3396 | |
ef44a1ec LZ |
3397 | oparams = memdup_user(_oparams, sizeof(*oparams)); |
3398 | if (IS_ERR(oparams)) { | |
3399 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3400 | goto out; |
3401 | } | |
3402 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3403 | err = snd_pcm_hw_refine(substream, params); | |
3404 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3405 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3406 | if (!err) | |
3407 | err = -EFAULT; | |
3408 | } | |
ef44a1ec LZ |
3409 | |
3410 | kfree(oparams); | |
1da177e4 LT |
3411 | out: |
3412 | kfree(params); | |
1da177e4 LT |
3413 | return err; |
3414 | } | |
3415 | ||
877211f5 TI |
3416 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3417 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3418 | { |
877211f5 TI |
3419 | struct snd_pcm_hw_params *params; |
3420 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3421 | int err; |
3422 | ||
3423 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
ef44a1ec LZ |
3424 | if (!params) |
3425 | return -ENOMEM; | |
3426 | ||
3427 | oparams = memdup_user(_oparams, sizeof(*oparams)); | |
3428 | if (IS_ERR(oparams)) { | |
3429 | err = PTR_ERR(oparams); | |
1da177e4 LT |
3430 | goto out; |
3431 | } | |
3432 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3433 | err = snd_pcm_hw_params(substream, params); | |
3434 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3435 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3436 | if (!err) | |
3437 | err = -EFAULT; | |
3438 | } | |
ef44a1ec LZ |
3439 | |
3440 | kfree(oparams); | |
1da177e4 LT |
3441 | out: |
3442 | kfree(params); | |
1da177e4 LT |
3443 | return err; |
3444 | } | |
59d48582 | 3445 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 | 3446 | |
7003609b | 3447 | #ifndef CONFIG_MMU |
55c63bd2 DG |
3448 | static unsigned long snd_pcm_get_unmapped_area(struct file *file, |
3449 | unsigned long addr, | |
3450 | unsigned long len, | |
3451 | unsigned long pgoff, | |
3452 | unsigned long flags) | |
3453 | { | |
3454 | struct snd_pcm_file *pcm_file = file->private_data; | |
3455 | struct snd_pcm_substream *substream = pcm_file->substream; | |
3456 | struct snd_pcm_runtime *runtime = substream->runtime; | |
3457 | unsigned long offset = pgoff << PAGE_SHIFT; | |
3458 | ||
3459 | switch (offset) { | |
3460 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
3461 | return (unsigned long)runtime->status; | |
3462 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
3463 | return (unsigned long)runtime->control; | |
3464 | default: | |
3465 | return (unsigned long)runtime->dma_area + offset; | |
3466 | } | |
7003609b CC |
3467 | } |
3468 | #else | |
55c63bd2 | 3469 | # define snd_pcm_get_unmapped_area NULL |
7003609b CC |
3470 | #endif |
3471 | ||
1da177e4 LT |
3472 | /* |
3473 | * Register section | |
3474 | */ | |
3475 | ||
9c2e08c5 | 3476 | const struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3477 | { |
2af677fc CL |
3478 | .owner = THIS_MODULE, |
3479 | .write = snd_pcm_write, | |
ee0b3e67 | 3480 | .aio_write = snd_pcm_aio_write, |
f87135f5 | 3481 | .open = snd_pcm_playback_open, |
2af677fc | 3482 | .release = snd_pcm_release, |
02f4865f | 3483 | .llseek = no_llseek, |
2af677fc CL |
3484 | .poll = snd_pcm_playback_poll, |
3485 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3486 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3487 | .mmap = snd_pcm_mmap, | |
3488 | .fasync = snd_pcm_fasync, | |
55c63bd2 | 3489 | .get_unmapped_area = snd_pcm_get_unmapped_area, |
1da177e4 LT |
3490 | }, |
3491 | { | |
2af677fc CL |
3492 | .owner = THIS_MODULE, |
3493 | .read = snd_pcm_read, | |
ee0b3e67 | 3494 | .aio_read = snd_pcm_aio_read, |
f87135f5 | 3495 | .open = snd_pcm_capture_open, |
2af677fc | 3496 | .release = snd_pcm_release, |
02f4865f | 3497 | .llseek = no_llseek, |
2af677fc CL |
3498 | .poll = snd_pcm_capture_poll, |
3499 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3500 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3501 | .mmap = snd_pcm_mmap, | |
3502 | .fasync = snd_pcm_fasync, | |
55c63bd2 | 3503 | .get_unmapped_area = snd_pcm_get_unmapped_area, |
1da177e4 LT |
3504 | } |
3505 | }; |