2 * Digital Audio (PCM) abstract layer / OSS compatible
3 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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.
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.
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
29 #include <sound/driver.h>
30 #include <linux/init.h>
31 #include <linux/smp_lock.h>
32 #include <linux/slab.h>
33 #include <linux/time.h>
34 #include <linux/vmalloc.h>
35 #include <linux/moduleparam.h>
36 #include <linux/string.h>
37 #include <sound/core.h>
38 #include <sound/minors.h>
39 #include <sound/pcm.h>
40 #include <sound/pcm_params.h>
41 #include "pcm_plugin.h"
42 #include <sound/info.h>
43 #include <linux/soundcard.h>
44 #include <sound/initval.h>
46 #define OSS_ALSAEMULVER _SIOR ('M', 249, int)
48 static int dsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 0};
49 static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1};
50 static int nonblock_open = 1;
52 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Abramo Bagnara <abramo@alsa-project.org>");
53 MODULE_DESCRIPTION("PCM OSS emulation for ALSA.");
54 MODULE_LICENSE("GPL");
55 module_param_array(dsp_map, int, NULL, 0444);
56 MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device.");
57 module_param_array(adsp_map, int, NULL, 0444);
58 MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device.");
59 module_param(nonblock_open, bool, 0644);
60 MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices.");
61 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM);
62 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1);
64 extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg);
65 static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file);
66 static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file);
67 static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file);
69 static inline mm_segment_t snd_enter_user(void)
71 mm_segment_t fs = get_fs();
76 static inline void snd_leave_user(mm_segment_t fs)
81 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
82 static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream)
84 struct snd_pcm_runtime *runtime = substream->runtime;
85 struct snd_pcm_plugin *plugin, *next;
87 plugin = runtime->oss.plugin_first;
90 snd_pcm_plugin_free(plugin);
93 runtime->oss.plugin_first = runtime->oss.plugin_last = NULL;
97 static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin)
99 struct snd_pcm_runtime *runtime = plugin->plug->runtime;
100 plugin->next = runtime->oss.plugin_first;
102 if (runtime->oss.plugin_first) {
103 runtime->oss.plugin_first->prev = plugin;
104 runtime->oss.plugin_first = plugin;
106 runtime->oss.plugin_last =
107 runtime->oss.plugin_first = plugin;
112 int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin)
114 struct snd_pcm_runtime *runtime = plugin->plug->runtime;
116 plugin->prev = runtime->oss.plugin_last;
117 if (runtime->oss.plugin_last) {
118 runtime->oss.plugin_last->next = plugin;
119 runtime->oss.plugin_last = plugin;
121 runtime->oss.plugin_last =
122 runtime->oss.plugin_first = plugin;
126 #endif /* CONFIG_SND_PCM_OSS_PLUGINS */
128 static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames)
130 struct snd_pcm_runtime *runtime = substream->runtime;
131 long buffer_size = snd_pcm_lib_buffer_bytes(substream);
132 long bytes = frames_to_bytes(runtime, frames);
133 if (buffer_size == runtime->oss.buffer_bytes)
135 #if BITS_PER_LONG >= 64
136 return runtime->oss.buffer_bytes * bytes / buffer_size;
139 u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes;
141 div64_32(&bsize, buffer_size, &rem);
147 static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes)
149 struct snd_pcm_runtime *runtime = substream->runtime;
150 long buffer_size = snd_pcm_lib_buffer_bytes(substream);
151 if (buffer_size == runtime->oss.buffer_bytes)
152 return bytes_to_frames(runtime, bytes);
153 return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes);
156 static int snd_pcm_oss_format_from(int format)
159 case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW;
160 case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW;
161 case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM;
162 case AFMT_U8: return SNDRV_PCM_FORMAT_U8;
163 case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE;
164 case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE;
165 case AFMT_S8: return SNDRV_PCM_FORMAT_S8;
166 case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE;
167 case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE;
168 case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG;
169 default: return SNDRV_PCM_FORMAT_U8;
173 static int snd_pcm_oss_format_to(int format)
176 case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW;
177 case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW;
178 case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM;
179 case SNDRV_PCM_FORMAT_U8: return AFMT_U8;
180 case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE;
181 case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE;
182 case SNDRV_PCM_FORMAT_S8: return AFMT_S8;
183 case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE;
184 case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE;
185 case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG;
186 default: return -EINVAL;
190 static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
191 struct snd_pcm_hw_params *oss_params,
192 struct snd_pcm_hw_params *slave_params)
195 size_t oss_buffer_size, oss_period_size, oss_periods;
196 size_t min_period_size, max_period_size;
197 struct snd_pcm_runtime *runtime = substream->runtime;
198 size_t oss_frame_size;
200 oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) *
201 params_channels(oss_params) / 8;
203 oss_buffer_size = snd_pcm_plug_client_size(substream,
204 snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size;
205 oss_buffer_size = 1 << ld2(oss_buffer_size);
206 if (atomic_read(&runtime->mmap_count)) {
207 if (oss_buffer_size > runtime->oss.mmap_bytes)
208 oss_buffer_size = runtime->oss.mmap_bytes;
211 if (substream->oss.setup.period_size > 16)
212 oss_period_size = substream->oss.setup.period_size;
213 else if (runtime->oss.fragshift) {
214 oss_period_size = 1 << runtime->oss.fragshift;
215 if (oss_period_size > oss_buffer_size / 2)
216 oss_period_size = oss_buffer_size / 2;
219 size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8;
221 oss_period_size = oss_buffer_size;
223 oss_period_size /= 2;
224 } while (oss_period_size > bytes_per_sec);
225 if (runtime->oss.subdivision == 0) {
227 if (oss_period_size / sd > 4096)
229 if (oss_period_size / sd < 4096)
232 sd = runtime->oss.subdivision;
233 oss_period_size /= sd;
234 if (oss_period_size < 16)
235 oss_period_size = 16;
238 min_period_size = snd_pcm_plug_client_size(substream,
239 snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
240 min_period_size *= oss_frame_size;
241 min_period_size = 1 << (ld2(min_period_size - 1) + 1);
242 if (oss_period_size < min_period_size)
243 oss_period_size = min_period_size;
245 max_period_size = snd_pcm_plug_client_size(substream,
246 snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
247 max_period_size *= oss_frame_size;
248 max_period_size = 1 << ld2(max_period_size);
249 if (oss_period_size > max_period_size)
250 oss_period_size = max_period_size;
252 oss_periods = oss_buffer_size / oss_period_size;
254 if (substream->oss.setup.periods > 1)
255 oss_periods = substream->oss.setup.periods;
257 s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL);
258 if (runtime->oss.maxfrags && s > runtime->oss.maxfrags)
259 s = runtime->oss.maxfrags;
263 s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL);
269 while (oss_period_size * oss_periods > oss_buffer_size)
270 oss_period_size /= 2;
272 snd_assert(oss_period_size >= 16, return -EINVAL);
273 runtime->oss.period_bytes = oss_period_size;
274 runtime->oss.period_frames = 1;
275 runtime->oss.periods = oss_periods;
279 static int choose_rate(struct snd_pcm_substream *substream,
280 struct snd_pcm_hw_params *params, unsigned int best_rate)
282 struct snd_interval *it;
283 struct snd_pcm_hw_params *save;
284 unsigned int rate, prev;
286 save = kmalloc(sizeof(*save), GFP_KERNEL);
290 it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE);
292 /* try multiples of the best rate */
295 if (it->max < rate || (it->max == rate && it->openmax))
297 if (it->min < rate || (it->min == rate && !it->openmin)) {
299 ret = snd_pcm_hw_param_set(substream, params,
300 SNDRV_PCM_HW_PARAM_RATE,
302 if (ret == (int)rate) {
314 /* not found, use the nearest rate */
316 return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL);
319 static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
321 struct snd_pcm_runtime *runtime = substream->runtime;
322 struct snd_pcm_hw_params *params, *sparams;
323 struct snd_pcm_sw_params *sw_params;
324 ssize_t oss_buffer_size, oss_period_size;
325 size_t oss_frame_size;
328 int format, sformat, n;
329 struct snd_mask sformat_mask;
330 struct snd_mask mask;
332 sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL);
333 params = kmalloc(sizeof(*params), GFP_KERNEL);
334 sparams = kmalloc(sizeof(*sparams), GFP_KERNEL);
335 if (!sw_params || !params || !sparams) {
336 snd_printd("No memory\n");
341 if (atomic_read(&runtime->mmap_count))
344 direct = substream->oss.setup.direct;
346 _snd_pcm_hw_params_any(sparams);
347 _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS);
348 _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0);
349 snd_mask_none(&mask);
350 if (atomic_read(&runtime->mmap_count))
351 snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED);
353 snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED);
355 snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED);
357 err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask);
359 snd_printd("No usable accesses\n");
363 choose_rate(substream, sparams, runtime->oss.rate);
364 snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL);
366 format = snd_pcm_oss_format_from(runtime->oss.format);
368 sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT);
372 sformat = snd_pcm_plug_slave_format(format, &sformat_mask);
374 if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) {
375 for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) {
376 if (snd_mask_test(&sformat_mask, sformat) &&
377 snd_pcm_oss_format_to(sformat) >= 0)
380 if (sformat > SNDRV_PCM_FORMAT_LAST) {
381 snd_printd("Cannot find a format!!!\n");
386 err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0);
387 snd_assert(err >= 0, goto failure);
390 memcpy(params, sparams, sizeof(*params));
392 _snd_pcm_hw_params_any(params);
393 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS,
394 SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0);
395 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT,
396 snd_pcm_oss_format_from(runtime->oss.format), 0);
397 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS,
398 runtime->oss.channels, 0);
399 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE,
400 runtime->oss.rate, 0);
401 pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n",
402 params_access(params), params_format(params),
403 params_channels(params), params_rate(params));
405 pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n",
406 params_access(sparams), params_format(sparams),
407 params_channels(sparams), params_rate(sparams));
409 oss_frame_size = snd_pcm_format_physical_width(params_format(params)) *
410 params_channels(params) / 8;
412 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
413 snd_pcm_oss_plugin_clear(substream);
415 /* add necessary plugins */
416 snd_pcm_oss_plugin_clear(substream);
417 if ((err = snd_pcm_plug_format_plugins(substream,
420 snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err);
421 snd_pcm_oss_plugin_clear(substream);
424 if (runtime->oss.plugin_first) {
425 struct snd_pcm_plugin *plugin;
426 if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) {
427 snd_printd("snd_pcm_plugin_build_io failed: %i\n", err);
428 snd_pcm_oss_plugin_clear(substream);
431 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
432 err = snd_pcm_plugin_append(plugin);
434 err = snd_pcm_plugin_insert(plugin);
437 snd_pcm_oss_plugin_clear(substream);
444 err = snd_pcm_oss_period_size(substream, params, sparams);
448 n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size);
449 err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL);
450 snd_assert(err >= 0, goto failure);
452 err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS,
453 runtime->oss.periods, NULL);
454 snd_assert(err >= 0, goto failure);
456 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
458 if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) {
459 snd_printd("HW_PARAMS failed: %i\n", err);
463 memset(sw_params, 0, sizeof(*sw_params));
464 if (runtime->oss.trigger) {
465 sw_params->start_threshold = 1;
467 sw_params->start_threshold = runtime->boundary;
469 if (atomic_read(&runtime->mmap_count) || substream->stream == SNDRV_PCM_STREAM_CAPTURE)
470 sw_params->stop_threshold = runtime->boundary;
472 sw_params->stop_threshold = runtime->buffer_size;
473 sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE;
474 sw_params->period_step = 1;
475 sw_params->sleep_min = 0;
476 sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
477 1 : runtime->period_size;
478 sw_params->xfer_align = 1;
479 if (atomic_read(&runtime->mmap_count) ||
480 substream->oss.setup.nosilence) {
481 sw_params->silence_threshold = 0;
482 sw_params->silence_size = 0;
484 snd_pcm_uframes_t frames;
485 frames = runtime->period_size + 16;
486 if (frames > runtime->buffer_size)
487 frames = runtime->buffer_size;
488 sw_params->silence_threshold = frames;
489 sw_params->silence_size = frames;
492 if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) {
493 snd_printd("SW_PARAMS failed: %i\n", err);
497 runtime->oss.periods = params_periods(sparams);
498 oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams));
499 snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure);
500 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
501 if (runtime->oss.plugin_first) {
502 err = snd_pcm_plug_alloc(substream, oss_period_size);
507 oss_period_size *= oss_frame_size;
509 oss_buffer_size = oss_period_size * runtime->oss.periods;
510 snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure);
512 runtime->oss.period_bytes = oss_period_size;
513 runtime->oss.buffer_bytes = oss_buffer_size;
515 pdprintf("oss: period bytes = %i, buffer bytes = %i\n",
516 runtime->oss.period_bytes,
517 runtime->oss.buffer_bytes);
518 pdprintf("slave: period_size = %i, buffer_size = %i\n",
519 params_period_size(sparams),
520 params_buffer_size(sparams));
522 runtime->oss.format = snd_pcm_oss_format_to(params_format(params));
523 runtime->oss.channels = params_channels(params);
524 runtime->oss.rate = params_rate(params);
526 runtime->oss.params = 0;
527 runtime->oss.prepare = 1;
528 vfree(runtime->oss.buffer);
529 runtime->oss.buffer = vmalloc(runtime->oss.period_bytes);
530 runtime->oss.buffer_used = 0;
531 if (runtime->dma_area)
532 snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes));
534 runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size);
544 static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream)
547 struct snd_pcm_substream *asubstream = NULL, *substream;
549 for (idx = 0; idx < 2; idx++) {
550 substream = pcm_oss_file->streams[idx];
551 if (substream == NULL)
553 if (asubstream == NULL)
554 asubstream = substream;
555 if (substream->runtime->oss.params) {
556 err = snd_pcm_oss_change_params(substream);
561 snd_assert(asubstream != NULL, return -EIO);
563 *r_substream = asubstream;
567 static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream)
570 struct snd_pcm_runtime *runtime = substream->runtime;
572 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL);
574 snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n");
577 runtime->oss.prepare = 0;
578 runtime->oss.prev_hw_ptr_interrupt = 0;
579 runtime->oss.period_ptr = 0;
580 runtime->oss.buffer_used = 0;
585 static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream)
587 struct snd_pcm_runtime *runtime;
590 if (substream == NULL)
592 runtime = substream->runtime;
593 if (runtime->oss.params) {
594 err = snd_pcm_oss_change_params(substream);
598 if (runtime->oss.prepare) {
599 err = snd_pcm_oss_prepare(substream);
606 static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay)
608 struct snd_pcm_runtime *runtime;
609 snd_pcm_uframes_t frames;
613 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay);
616 runtime = substream->runtime;
617 if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size)
619 /* in case of overrun, skip whole periods like OSS/Linux driver does */
620 /* until avail(delay) <= buffer_size */
621 frames = (*delay - runtime->buffer_size) + runtime->period_size - 1;
622 frames /= runtime->period_size;
623 frames *= runtime->period_size;
624 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames);
631 snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel)
633 struct snd_pcm_runtime *runtime = substream->runtime;
636 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
637 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
639 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
640 printk("pcm_oss: write: recovering from XRUN\n");
642 printk("pcm_oss: write: recovering from SUSPEND\n");
644 ret = snd_pcm_oss_prepare(substream);
650 fs = snd_enter_user();
651 ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames);
654 ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames);
656 if (ret != -EPIPE && ret != -ESTRPIPE)
658 /* test, if we can't store new data, because the stream */
659 /* has not been started */
660 if (runtime->status->state == SNDRV_PCM_STATE_PREPARED)
666 snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel)
668 struct snd_pcm_runtime *runtime = substream->runtime;
669 snd_pcm_sframes_t delay;
672 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
673 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
675 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
676 printk("pcm_oss: read: recovering from XRUN\n");
678 printk("pcm_oss: read: recovering from SUSPEND\n");
680 ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
683 } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) {
684 ret = snd_pcm_oss_prepare(substream);
688 ret = snd_pcm_oss_capture_position_fixup(substream, &delay);
693 fs = snd_enter_user();
694 ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames);
697 ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames);
700 if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
701 ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
707 if (ret != -ESTRPIPE)
713 snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
715 struct snd_pcm_runtime *runtime = substream->runtime;
718 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
719 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
721 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
722 printk("pcm_oss: writev: recovering from XRUN\n");
724 printk("pcm_oss: writev: recovering from SUSPEND\n");
726 ret = snd_pcm_oss_prepare(substream);
732 fs = snd_enter_user();
733 ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames);
736 ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames);
738 if (ret != -EPIPE && ret != -ESTRPIPE)
741 /* test, if we can't store new data, because the stream */
742 /* has not been started */
743 if (runtime->status->state == SNDRV_PCM_STATE_PREPARED)
749 snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
751 struct snd_pcm_runtime *runtime = substream->runtime;
754 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
755 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
757 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
758 printk("pcm_oss: readv: recovering from XRUN\n");
760 printk("pcm_oss: readv: recovering from SUSPEND\n");
762 ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
765 } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) {
766 ret = snd_pcm_oss_prepare(substream);
772 fs = snd_enter_user();
773 ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames);
776 ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames);
778 if (ret != -EPIPE && ret != -ESTRPIPE)
784 static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel)
786 struct snd_pcm_runtime *runtime = substream->runtime;
787 snd_pcm_sframes_t frames, frames1;
788 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
789 if (runtime->oss.plugin_first) {
790 struct snd_pcm_plugin_channel *channels;
791 size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8;
793 if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes))
795 buf = runtime->oss.buffer;
797 frames = bytes / oss_frame_bytes;
798 frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels);
801 frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1);
804 bytes = frames1 * oss_frame_bytes;
808 frames = bytes_to_frames(runtime, bytes);
809 frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel);
812 bytes = frames_to_bytes(runtime, frames1);
817 static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes)
821 struct snd_pcm_runtime *runtime = substream->runtime;
823 if (atomic_read(&runtime->mmap_count))
826 if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
829 if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
831 if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes)
832 tmp = runtime->oss.period_bytes - runtime->oss.buffer_used;
834 if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp))
835 return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT;
837 runtime->oss.buffer_used += tmp;
841 if (substream->oss.setup.partialfrag ||
842 runtime->oss.buffer_used == runtime->oss.period_bytes) {
843 tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr,
844 runtime->oss.buffer_used - runtime->oss.period_ptr, 1);
846 return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
847 runtime->oss.bytes += tmp;
848 runtime->oss.period_ptr += tmp;
849 runtime->oss.period_ptr %= runtime->oss.period_bytes;
850 if (runtime->oss.period_ptr == 0 ||
851 runtime->oss.period_ptr == runtime->oss.buffer_used)
852 runtime->oss.buffer_used = 0;
853 else if ((substream->ffile->f_flags & O_NONBLOCK) != 0)
854 return xfer > 0 ? xfer : -EAGAIN;
857 tmp = snd_pcm_oss_write2(substream,
858 (const char __force *)buf,
859 runtime->oss.period_bytes, 0);
861 return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
862 runtime->oss.bytes += tmp;
866 if ((substream->ffile->f_flags & O_NONBLOCK) != 0 &&
867 tmp != runtime->oss.period_bytes)
874 static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel)
876 struct snd_pcm_runtime *runtime = substream->runtime;
877 snd_pcm_sframes_t frames, frames1;
878 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
879 char __user *final_dst = (char __user *)buf;
880 if (runtime->oss.plugin_first) {
881 struct snd_pcm_plugin_channel *channels;
882 size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8;
884 buf = runtime->oss.buffer;
885 frames = bytes / oss_frame_bytes;
886 frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels);
889 frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1);
892 bytes = frames1 * oss_frame_bytes;
893 if (!in_kernel && copy_to_user(final_dst, buf, bytes))
898 frames = bytes_to_frames(runtime, bytes);
899 frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel);
902 bytes = frames_to_bytes(runtime, frames1);
907 static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes)
911 struct snd_pcm_runtime *runtime = substream->runtime;
913 if (atomic_read(&runtime->mmap_count))
916 if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
919 if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
920 if (runtime->oss.buffer_used == 0) {
921 tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1);
923 return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
924 runtime->oss.bytes += tmp;
925 runtime->oss.period_ptr = tmp;
926 runtime->oss.buffer_used = tmp;
929 if ((size_t) tmp > runtime->oss.buffer_used)
930 tmp = runtime->oss.buffer_used;
931 if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp))
932 return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT;
936 runtime->oss.buffer_used -= tmp;
938 tmp = snd_pcm_oss_read2(substream, (char __force *)buf,
939 runtime->oss.period_bytes, 0);
941 return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
942 runtime->oss.bytes += tmp;
951 static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file)
953 struct snd_pcm_substream *substream;
955 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
956 if (substream != NULL) {
957 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
958 substream->runtime->oss.prepare = 1;
960 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
961 if (substream != NULL) {
962 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
963 substream->runtime->oss.prepare = 1;
968 static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file)
970 struct snd_pcm_substream *substream;
973 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
974 if (substream != NULL) {
975 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
977 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL);
979 /* note: all errors from the start action are ignored */
980 /* OSS apps do not know, how to handle them */
984 static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size)
986 struct snd_pcm_runtime *runtime;
991 runtime = substream->runtime;
992 init_waitqueue_entry(&wait, current);
993 add_wait_queue(&runtime->sleep, &wait);
995 printk("sync1: size = %li\n", size);
998 result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1);
1000 runtime->oss.buffer_used = 0;
1004 if (result != 0 && result != -EAGAIN)
1007 set_current_state(TASK_INTERRUPTIBLE);
1008 snd_pcm_stream_lock_irq(substream);
1009 res = runtime->status->state;
1010 snd_pcm_stream_unlock_irq(substream);
1011 if (res != SNDRV_PCM_STATE_RUNNING) {
1012 set_current_state(TASK_RUNNING);
1015 res = schedule_timeout(10 * HZ);
1016 if (signal_pending(current)) {
1017 result = -ERESTARTSYS;
1021 snd_printk(KERN_ERR "OSS sync error - DMA timeout\n");
1026 remove_wait_queue(&runtime->sleep, &wait);
1030 static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
1033 unsigned int saved_f_flags;
1034 struct snd_pcm_substream *substream;
1035 struct snd_pcm_runtime *runtime;
1036 snd_pcm_format_t format;
1037 unsigned long width;
1040 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1041 if (substream != NULL) {
1042 runtime = substream->runtime;
1043 if (atomic_read(&runtime->mmap_count))
1045 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
1047 format = snd_pcm_oss_format_from(runtime->oss.format);
1048 width = snd_pcm_format_physical_width(format);
1049 if (runtime->oss.buffer_used > 0) {
1051 printk("sync: buffer_used\n");
1053 size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width;
1054 snd_pcm_format_set_silence(format,
1055 runtime->oss.buffer + runtime->oss.buffer_used,
1057 err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes);
1060 } else if (runtime->oss.period_ptr > 0) {
1062 printk("sync: period_ptr\n");
1064 size = runtime->oss.period_bytes - runtime->oss.period_ptr;
1065 snd_pcm_format_set_silence(format,
1066 runtime->oss.buffer,
1068 err = snd_pcm_oss_sync1(substream, size);
1073 * The ALSA's period might be a bit large than OSS one.
1074 * Fill the remain portion of ALSA period with zeros.
1076 size = runtime->control->appl_ptr % runtime->period_size;
1078 size = runtime->period_size - size;
1079 if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) {
1080 size = (runtime->frame_bits * size) / 8;
1083 size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes;
1086 size1 /= runtime->sample_bits;
1087 snd_pcm_format_set_silence(runtime->format,
1088 runtime->oss.buffer,
1090 fs = snd_enter_user();
1091 snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1);
1094 } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) {
1095 void __user *buffers[runtime->channels];
1096 memset(buffers, 0, runtime->channels * sizeof(void *));
1097 snd_pcm_lib_writev(substream, buffers, size);
1101 * finish sync: drain the buffer
1104 saved_f_flags = substream->ffile->f_flags;
1105 substream->ffile->f_flags &= ~O_NONBLOCK;
1106 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
1107 substream->ffile->f_flags = saved_f_flags;
1110 runtime->oss.prepare = 1;
1113 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
1114 if (substream != NULL) {
1115 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
1117 runtime = substream->runtime;
1118 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
1121 runtime->oss.buffer_used = 0;
1122 runtime->oss.prepare = 1;
1127 static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
1131 for (idx = 1; idx >= 0; --idx) {
1132 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1133 struct snd_pcm_runtime *runtime;
1134 if (substream == NULL)
1136 runtime = substream->runtime;
1139 else if (rate > 192000)
1141 if (runtime->oss.rate != rate) {
1142 runtime->oss.params = 1;
1143 runtime->oss.rate = rate;
1146 return snd_pcm_oss_get_rate(pcm_oss_file);
1149 static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file)
1151 struct snd_pcm_substream *substream;
1154 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1156 return substream->runtime->oss.rate;
1159 static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels)
1166 for (idx = 1; idx >= 0; --idx) {
1167 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1168 struct snd_pcm_runtime *runtime;
1169 if (substream == NULL)
1171 runtime = substream->runtime;
1172 if (runtime->oss.channels != channels) {
1173 runtime->oss.params = 1;
1174 runtime->oss.channels = channels;
1177 return snd_pcm_oss_get_channels(pcm_oss_file);
1180 static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file)
1182 struct snd_pcm_substream *substream;
1185 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1187 return substream->runtime->oss.channels;
1190 static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file)
1192 struct snd_pcm_substream *substream;
1195 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1197 return substream->runtime->oss.period_bytes;
1200 static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
1202 struct snd_pcm_substream *substream;
1205 struct snd_pcm_hw_params *params;
1206 unsigned int formats = 0;
1207 struct snd_mask format_mask;
1210 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1212 if (atomic_read(&substream->runtime->mmap_count))
1215 direct = substream->oss.setup.direct;
1217 return AFMT_MU_LAW | AFMT_U8 |
1218 AFMT_S16_LE | AFMT_S16_BE |
1219 AFMT_S8 | AFMT_U16_LE |
1221 params = kmalloc(sizeof(*params), GFP_KERNEL);
1224 _snd_pcm_hw_params_any(params);
1225 err = snd_pcm_hw_refine(substream, params);
1226 format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
1228 snd_assert(err >= 0, return err);
1229 for (fmt = 0; fmt < 32; ++fmt) {
1230 if (snd_mask_test(&format_mask, fmt)) {
1231 int f = snd_pcm_oss_format_to(fmt);
1239 static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format)
1243 if (format != AFMT_QUERY) {
1244 formats = snd_pcm_oss_get_formats(pcm_oss_file);
1245 if (!(formats & format))
1247 for (idx = 1; idx >= 0; --idx) {
1248 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1249 struct snd_pcm_runtime *runtime;
1250 if (substream == NULL)
1252 runtime = substream->runtime;
1253 if (runtime->oss.format != format) {
1254 runtime->oss.params = 1;
1255 runtime->oss.format = format;
1259 return snd_pcm_oss_get_format(pcm_oss_file);
1262 static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file)
1264 struct snd_pcm_substream *substream;
1267 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1269 return substream->runtime->oss.format;
1272 static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide)
1274 struct snd_pcm_runtime *runtime;
1276 if (substream == NULL)
1278 runtime = substream->runtime;
1279 if (subdivide == 0) {
1280 subdivide = runtime->oss.subdivision;
1285 if (runtime->oss.subdivision || runtime->oss.fragshift)
1287 if (subdivide != 1 && subdivide != 2 && subdivide != 4 &&
1288 subdivide != 8 && subdivide != 16)
1290 runtime->oss.subdivision = subdivide;
1291 runtime->oss.params = 1;
1295 static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide)
1297 int err = -EINVAL, idx;
1299 for (idx = 1; idx >= 0; --idx) {
1300 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1301 if (substream == NULL)
1303 if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0)
1309 static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val)
1311 struct snd_pcm_runtime *runtime;
1313 if (substream == NULL)
1315 runtime = substream->runtime;
1316 if (runtime->oss.subdivision || runtime->oss.fragshift)
1318 runtime->oss.fragshift = val & 0xffff;
1319 runtime->oss.maxfrags = (val >> 16) & 0xffff;
1320 if (runtime->oss.fragshift < 4) /* < 16 */
1321 runtime->oss.fragshift = 4;
1322 if (runtime->oss.maxfrags < 2)
1323 runtime->oss.maxfrags = 2;
1324 runtime->oss.params = 1;
1328 static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val)
1330 int err = -EINVAL, idx;
1332 for (idx = 1; idx >= 0; --idx) {
1333 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1334 if (substream == NULL)
1336 if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0)
1342 static int snd_pcm_oss_nonblock(struct file * file)
1344 file->f_flags |= O_NONBLOCK;
1348 static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res)
1351 if (substream == NULL) {
1352 res &= ~DSP_CAP_DUPLEX;
1355 #ifdef DSP_CAP_MULTI
1356 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1357 if (substream->pstr->substream_count > 1)
1358 res |= DSP_CAP_MULTI;
1360 /* DSP_CAP_REALTIME is set all times: */
1361 /* all ALSA drivers can return actual pointer in ring buffer */
1362 #if defined(DSP_CAP_REALTIME) && 0
1364 struct snd_pcm_runtime *runtime = substream->runtime;
1365 if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH))
1366 res &= ~DSP_CAP_REALTIME;
1372 static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file)
1376 result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME;
1377 for (idx = 0; idx < 2; idx++) {
1378 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1379 result = snd_pcm_oss_get_caps1(substream, result);
1381 result |= 0x0001; /* revision - same as SB AWE 64 */
1385 static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr)
1387 struct snd_pcm_runtime *runtime = substream->runtime;
1388 snd_pcm_uframes_t appl_ptr;
1389 appl_ptr = hw_ptr + runtime->buffer_size;
1390 appl_ptr %= runtime->boundary;
1391 runtime->control->appl_ptr = appl_ptr;
1394 static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger)
1396 struct snd_pcm_runtime *runtime;
1397 struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
1401 printk("pcm_oss: trigger = 0x%x\n", trigger);
1404 psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1405 csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
1408 if ((err = snd_pcm_oss_make_ready(psubstream)) < 0)
1412 if ((err = snd_pcm_oss_make_ready(csubstream)) < 0)
1416 runtime = psubstream->runtime;
1417 if (trigger & PCM_ENABLE_OUTPUT) {
1418 if (runtime->oss.trigger)
1420 if (atomic_read(&psubstream->runtime->mmap_count))
1421 snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt);
1422 runtime->oss.trigger = 1;
1423 runtime->start_threshold = 1;
1424 cmd = SNDRV_PCM_IOCTL_START;
1426 if (!runtime->oss.trigger)
1428 runtime->oss.trigger = 0;
1429 runtime->start_threshold = runtime->boundary;
1430 cmd = SNDRV_PCM_IOCTL_DROP;
1431 runtime->oss.prepare = 1;
1433 err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL);
1439 runtime = csubstream->runtime;
1440 if (trigger & PCM_ENABLE_INPUT) {
1441 if (runtime->oss.trigger)
1443 runtime->oss.trigger = 1;
1444 runtime->start_threshold = 1;
1445 cmd = SNDRV_PCM_IOCTL_START;
1447 if (!runtime->oss.trigger)
1449 runtime->oss.trigger = 0;
1450 runtime->start_threshold = runtime->boundary;
1451 cmd = SNDRV_PCM_IOCTL_DROP;
1452 runtime->oss.prepare = 1;
1454 err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL);
1462 static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file)
1464 struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
1467 psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1468 csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
1469 if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger)
1470 result |= PCM_ENABLE_OUTPUT;
1471 if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger)
1472 result |= PCM_ENABLE_INPUT;
1476 static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file)
1478 struct snd_pcm_substream *substream;
1479 struct snd_pcm_runtime *runtime;
1480 snd_pcm_sframes_t delay;
1483 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1484 if (substream == NULL)
1486 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
1488 runtime = substream->runtime;
1489 if (runtime->oss.params || runtime->oss.prepare)
1491 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay);
1493 delay = 0; /* hack for broken OSS applications */
1496 return snd_pcm_oss_bytes(substream, delay);
1499 static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info)
1501 struct snd_pcm_substream *substream;
1502 struct snd_pcm_runtime *runtime;
1503 snd_pcm_sframes_t delay;
1505 struct count_info info;
1510 substream = pcm_oss_file->streams[stream];
1511 if (substream == NULL)
1513 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
1515 runtime = substream->runtime;
1516 if (runtime->oss.params || runtime->oss.prepare) {
1517 memset(&info, 0, sizeof(info));
1518 if (copy_to_user(_info, &info, sizeof(info)))
1522 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1523 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay);
1524 if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) {
1529 fixup = runtime->oss.buffer_used;
1532 err = snd_pcm_oss_capture_position_fixup(substream, &delay);
1533 fixup = -runtime->oss.buffer_used;
1537 info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size);
1538 if (atomic_read(&runtime->mmap_count)) {
1539 snd_pcm_sframes_t n;
1540 n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt;
1542 n += runtime->boundary;
1543 info.blocks = n / runtime->period_size;
1544 runtime->oss.prev_hw_ptr_interrupt = delay;
1545 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1546 snd_pcm_oss_simulate_fill(substream, delay);
1547 info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX;
1549 delay = snd_pcm_oss_bytes(substream, delay);
1550 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1551 if (substream->oss.setup.buggyptr)
1552 info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes;
1554 info.blocks = (delay + fixup) / runtime->oss.period_bytes;
1555 info.bytes = (runtime->oss.bytes - delay) & INT_MAX;
1558 info.blocks = delay / runtime->oss.period_bytes;
1559 info.bytes = (runtime->oss.bytes + delay) & INT_MAX;
1562 if (copy_to_user(_info, &info, sizeof(info)))
1567 static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info)
1569 struct snd_pcm_substream *substream;
1570 struct snd_pcm_runtime *runtime;
1571 snd_pcm_sframes_t avail;
1573 struct audio_buf_info info;
1578 substream = pcm_oss_file->streams[stream];
1579 if (substream == NULL)
1581 runtime = substream->runtime;
1583 if (runtime->oss.params &&
1584 (err = snd_pcm_oss_change_params(substream)) < 0)
1587 info.fragsize = runtime->oss.period_bytes;
1588 info.fragstotal = runtime->periods;
1589 if (runtime->oss.prepare) {
1590 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1591 info.bytes = runtime->oss.period_bytes * runtime->oss.periods;
1592 info.fragments = runtime->oss.periods;
1598 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1599 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail);
1600 if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) {
1601 avail = runtime->buffer_size;
1605 avail = runtime->buffer_size - avail;
1606 fixup = -runtime->oss.buffer_used;
1609 err = snd_pcm_oss_capture_position_fixup(substream, &avail);
1610 fixup = runtime->oss.buffer_used;
1614 info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup;
1615 info.fragments = info.bytes / runtime->oss.period_bytes;
1619 printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize);
1621 if (copy_to_user(_info, &info, sizeof(info)))
1626 static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info)
1628 // it won't be probably implemented
1629 // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n");
1633 static const char *strip_task_path(const char *path)
1635 const char *ptr, *ptrl = NULL;
1636 for (ptr = path; *ptr; ptr++) {
1643 static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream,
1644 const char *task_name,
1645 struct snd_pcm_oss_setup *rsetup)
1647 struct snd_pcm_oss_setup *setup;
1649 mutex_lock(&pcm->streams[stream].oss.setup_mutex);
1651 for (setup = pcm->streams[stream].oss.setup_list; setup;
1652 setup = setup->next) {
1653 if (!strcmp(setup->task_name, task_name))
1656 } while ((task_name = strip_task_path(task_name)) != NULL);
1660 mutex_unlock(&pcm->streams[stream].oss.setup_mutex);
1663 static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream)
1665 struct snd_pcm_runtime *runtime;
1666 runtime = substream->runtime;
1667 vfree(runtime->oss.buffer);
1668 runtime->oss.buffer = NULL;
1669 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
1670 snd_pcm_oss_plugin_clear(substream);
1672 substream->oss.oss = 0;
1675 static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream,
1676 struct snd_pcm_oss_setup *setup,
1679 struct snd_pcm_runtime *runtime;
1681 substream->oss.oss = 1;
1682 substream->oss.setup = *setup;
1683 if (setup->nonblock)
1684 substream->ffile->f_flags |= O_NONBLOCK;
1685 else if (setup->block)
1686 substream->ffile->f_flags &= ~O_NONBLOCK;
1687 runtime = substream->runtime;
1688 runtime->oss.params = 1;
1689 runtime->oss.trigger = 1;
1690 runtime->oss.rate = 8000;
1691 switch (SNDRV_MINOR_OSS_DEVICE(minor)) {
1692 case SNDRV_MINOR_OSS_PCM_8:
1693 runtime->oss.format = AFMT_U8;
1695 case SNDRV_MINOR_OSS_PCM_16:
1696 runtime->oss.format = AFMT_S16_LE;
1699 runtime->oss.format = AFMT_MU_LAW;
1701 runtime->oss.channels = 1;
1702 runtime->oss.fragshift = 0;
1703 runtime->oss.maxfrags = 0;
1704 runtime->oss.subdivision = 0;
1705 substream->pcm_release = snd_pcm_oss_release_substream;
1708 static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file)
1711 snd_assert(pcm_oss_file != NULL, return -ENXIO);
1712 for (cidx = 0; cidx < 2; ++cidx) {
1713 struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx];
1715 snd_pcm_release_substream(substream);
1717 kfree(pcm_oss_file);
1721 static int snd_pcm_oss_open_file(struct file *file,
1722 struct snd_pcm *pcm,
1723 struct snd_pcm_oss_file **rpcm_oss_file,
1725 struct snd_pcm_oss_setup *setup)
1728 struct snd_pcm_oss_file *pcm_oss_file;
1729 struct snd_pcm_substream *substream;
1730 unsigned int f_mode = file->f_mode;
1732 snd_assert(rpcm_oss_file != NULL, return -EINVAL);
1733 *rpcm_oss_file = NULL;
1735 pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL);
1736 if (pcm_oss_file == NULL)
1739 if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) &&
1740 (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX))
1741 f_mode = FMODE_WRITE;
1743 for (idx = 0; idx < 2; idx++) {
1744 if (setup[idx].disable)
1746 if (idx == SNDRV_PCM_STREAM_PLAYBACK) {
1747 if (! (f_mode & FMODE_WRITE))
1750 if (! (f_mode & FMODE_READ))
1753 err = snd_pcm_open_substream(pcm, idx, file, &substream);
1755 snd_pcm_oss_release_file(pcm_oss_file);
1759 pcm_oss_file->streams[idx] = substream;
1760 substream->file = pcm_oss_file;
1761 snd_pcm_oss_init_substream(substream, &setup[idx], minor);
1764 if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) {
1765 snd_pcm_oss_release_file(pcm_oss_file);
1769 file->private_data = pcm_oss_file;
1770 *rpcm_oss_file = pcm_oss_file;
1775 static int snd_task_name(struct task_struct *task, char *name, size_t size)
1779 snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL);
1780 for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++)
1781 name[idx] = task->comm[idx];
1786 static int snd_pcm_oss_open(struct inode *inode, struct file *file)
1790 struct snd_pcm *pcm;
1791 struct snd_pcm_oss_file *pcm_oss_file;
1792 struct snd_pcm_oss_setup setup[2];
1796 pcm = snd_lookup_oss_minor_data(iminor(inode),
1797 SNDRV_OSS_DEVICE_TYPE_PCM);
1802 err = snd_card_file_add(pcm->card, file);
1805 if (!try_module_get(pcm->card->module)) {
1809 if (snd_task_name(current, task_name, sizeof(task_name)) < 0) {
1813 memset(setup, 0, sizeof(setup));
1814 if (file->f_mode & FMODE_WRITE)
1815 snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1816 task_name, &setup[0]);
1817 if (file->f_mode & FMODE_READ)
1818 snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE,
1819 task_name, &setup[1]);
1821 nonblock = !!(file->f_flags & O_NONBLOCK);
1823 nonblock = nonblock_open;
1825 init_waitqueue_entry(&wait, current);
1826 add_wait_queue(&pcm->open_wait, &wait);
1827 mutex_lock(&pcm->open_mutex);
1829 err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file,
1830 iminor(inode), setup);
1833 if (err == -EAGAIN) {
1840 set_current_state(TASK_INTERRUPTIBLE);
1841 mutex_unlock(&pcm->open_mutex);
1843 mutex_lock(&pcm->open_mutex);
1844 if (signal_pending(current)) {
1849 remove_wait_queue(&pcm->open_wait, &wait);
1850 mutex_unlock(&pcm->open_mutex);
1856 module_put(pcm->card->module);
1858 snd_card_file_remove(pcm->card, file);
1863 static int snd_pcm_oss_release(struct inode *inode, struct file *file)
1865 struct snd_pcm *pcm;
1866 struct snd_pcm_substream *substream;
1867 struct snd_pcm_oss_file *pcm_oss_file;
1869 pcm_oss_file = file->private_data;
1870 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1871 if (substream == NULL)
1872 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
1873 snd_assert(substream != NULL, return -ENXIO);
1874 pcm = substream->pcm;
1875 snd_pcm_oss_sync(pcm_oss_file);
1876 mutex_lock(&pcm->open_mutex);
1877 snd_pcm_oss_release_file(pcm_oss_file);
1878 mutex_unlock(&pcm->open_mutex);
1879 wake_up(&pcm->open_wait);
1880 module_put(pcm->card->module);
1881 snd_card_file_remove(pcm->card, file);
1885 static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1887 struct snd_pcm_oss_file *pcm_oss_file;
1888 int __user *p = (int __user *)arg;
1891 pcm_oss_file = file->private_data;
1892 if (cmd == OSS_GETVERSION)
1893 return put_user(SNDRV_OSS_VERSION, p);
1894 if (cmd == OSS_ALSAEMULVER)
1895 return put_user(1, p);
1896 #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE))
1897 if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */
1898 struct snd_pcm_substream *substream;
1900 for (idx = 0; idx < 2; ++idx) {
1901 substream = pcm_oss_file->streams[idx];
1902 if (substream != NULL)
1905 snd_assert(substream != NULL, return -ENXIO);
1906 return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg);
1909 if (((cmd >> 8) & 0xff) != 'P')
1912 printk("pcm_oss: ioctl = 0x%x\n", cmd);
1915 case SNDCTL_DSP_RESET:
1916 return snd_pcm_oss_reset(pcm_oss_file);
1917 case SNDCTL_DSP_SYNC:
1918 return snd_pcm_oss_sync(pcm_oss_file);
1919 case SNDCTL_DSP_SPEED:
1920 if (get_user(res, p))
1922 if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0)
1924 return put_user(res, p);
1925 case SOUND_PCM_READ_RATE:
1926 res = snd_pcm_oss_get_rate(pcm_oss_file);
1929 return put_user(res, p);
1930 case SNDCTL_DSP_STEREO:
1931 if (get_user(res, p))
1933 res = res > 0 ? 2 : 1;
1934 if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0)
1936 return put_user(--res, p);
1937 case SNDCTL_DSP_GETBLKSIZE:
1938 res = snd_pcm_oss_get_block_size(pcm_oss_file);
1941 return put_user(res, p);
1942 case SNDCTL_DSP_SETFMT:
1943 if (get_user(res, p))
1945 res = snd_pcm_oss_set_format(pcm_oss_file, res);
1948 return put_user(res, p);
1949 case SOUND_PCM_READ_BITS:
1950 res = snd_pcm_oss_get_format(pcm_oss_file);
1953 return put_user(res, p);
1954 case SNDCTL_DSP_CHANNELS:
1955 if (get_user(res, p))
1957 res = snd_pcm_oss_set_channels(pcm_oss_file, res);
1960 return put_user(res, p);
1961 case SOUND_PCM_READ_CHANNELS:
1962 res = snd_pcm_oss_get_channels(pcm_oss_file);
1965 return put_user(res, p);
1966 case SOUND_PCM_WRITE_FILTER:
1967 case SOUND_PCM_READ_FILTER:
1969 case SNDCTL_DSP_POST:
1970 return snd_pcm_oss_post(pcm_oss_file);
1971 case SNDCTL_DSP_SUBDIVIDE:
1972 if (get_user(res, p))
1974 res = snd_pcm_oss_set_subdivide(pcm_oss_file, res);
1977 return put_user(res, p);
1978 case SNDCTL_DSP_SETFRAGMENT:
1979 if (get_user(res, p))
1981 return snd_pcm_oss_set_fragment(pcm_oss_file, res);
1982 case SNDCTL_DSP_GETFMTS:
1983 res = snd_pcm_oss_get_formats(pcm_oss_file);
1986 return put_user(res, p);
1987 case SNDCTL_DSP_GETOSPACE:
1988 case SNDCTL_DSP_GETISPACE:
1989 return snd_pcm_oss_get_space(pcm_oss_file,
1990 cmd == SNDCTL_DSP_GETISPACE ?
1991 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
1992 (struct audio_buf_info __user *) arg);
1993 case SNDCTL_DSP_NONBLOCK:
1994 return snd_pcm_oss_nonblock(file);
1995 case SNDCTL_DSP_GETCAPS:
1996 res = snd_pcm_oss_get_caps(pcm_oss_file);
1999 return put_user(res, p);
2000 case SNDCTL_DSP_GETTRIGGER:
2001 res = snd_pcm_oss_get_trigger(pcm_oss_file);
2004 return put_user(res, p);
2005 case SNDCTL_DSP_SETTRIGGER:
2006 if (get_user(res, p))
2008 return snd_pcm_oss_set_trigger(pcm_oss_file, res);
2009 case SNDCTL_DSP_GETIPTR:
2010 case SNDCTL_DSP_GETOPTR:
2011 return snd_pcm_oss_get_ptr(pcm_oss_file,
2012 cmd == SNDCTL_DSP_GETIPTR ?
2013 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
2014 (struct count_info __user *) arg);
2015 case SNDCTL_DSP_MAPINBUF:
2016 case SNDCTL_DSP_MAPOUTBUF:
2017 return snd_pcm_oss_get_mapbuf(pcm_oss_file,
2018 cmd == SNDCTL_DSP_MAPINBUF ?
2019 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
2020 (struct buffmem_desc __user *) arg);
2021 case SNDCTL_DSP_SETSYNCRO:
2022 /* stop DMA now.. */
2024 case SNDCTL_DSP_SETDUPLEX:
2025 if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX)
2028 case SNDCTL_DSP_GETODELAY:
2029 res = snd_pcm_oss_get_odelay(pcm_oss_file);
2031 /* it's for sure, some broken apps don't check for error codes */
2035 return put_user(res, p);
2036 case SNDCTL_DSP_PROFILE:
2037 return 0; /* silently ignore */
2039 snd_printd("pcm_oss: unknown command = 0x%x\n", cmd);
2044 #ifdef CONFIG_COMPAT
2045 /* all compatible */
2046 #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl
2048 #define snd_pcm_oss_ioctl_compat NULL
2051 static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
2053 struct snd_pcm_oss_file *pcm_oss_file;
2054 struct snd_pcm_substream *substream;
2056 pcm_oss_file = file->private_data;
2057 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2058 if (substream == NULL)
2061 return snd_pcm_oss_read1(substream, buf, count);
2064 ssize_t res = snd_pcm_oss_read1(substream, buf, count);
2065 printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res);
2071 static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset)
2073 struct snd_pcm_oss_file *pcm_oss_file;
2074 struct snd_pcm_substream *substream;
2077 pcm_oss_file = file->private_data;
2078 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2079 if (substream == NULL)
2081 result = snd_pcm_oss_write1(substream, buf, count);
2083 printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result);
2088 static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream)
2090 struct snd_pcm_runtime *runtime = substream->runtime;
2091 if (atomic_read(&runtime->mmap_count))
2092 return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt;
2094 return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames;
2097 static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream)
2099 struct snd_pcm_runtime *runtime = substream->runtime;
2100 if (atomic_read(&runtime->mmap_count))
2101 return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt;
2103 return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames;
2106 static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
2108 struct snd_pcm_oss_file *pcm_oss_file;
2110 struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
2112 pcm_oss_file = file->private_data;
2114 psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2115 csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2118 if (psubstream != NULL) {
2119 struct snd_pcm_runtime *runtime = psubstream->runtime;
2120 poll_wait(file, &runtime->sleep, wait);
2121 snd_pcm_stream_lock_irq(psubstream);
2122 if (runtime->status->state != SNDRV_PCM_STATE_DRAINING &&
2123 (runtime->status->state != SNDRV_PCM_STATE_RUNNING ||
2124 snd_pcm_oss_playback_ready(psubstream)))
2125 mask |= POLLOUT | POLLWRNORM;
2126 snd_pcm_stream_unlock_irq(psubstream);
2128 if (csubstream != NULL) {
2129 struct snd_pcm_runtime *runtime = csubstream->runtime;
2130 snd_pcm_state_t ostate;
2131 poll_wait(file, &runtime->sleep, wait);
2132 snd_pcm_stream_lock_irq(csubstream);
2133 if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING ||
2134 snd_pcm_oss_capture_ready(csubstream))
2135 mask |= POLLIN | POLLRDNORM;
2136 snd_pcm_stream_unlock_irq(csubstream);
2137 if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) {
2138 struct snd_pcm_oss_file ofile;
2139 memset(&ofile, 0, sizeof(ofile));
2140 ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2141 runtime->oss.trigger = 0;
2142 snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT);
2149 static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area)
2151 struct snd_pcm_oss_file *pcm_oss_file;
2152 struct snd_pcm_substream *substream = NULL;
2153 struct snd_pcm_runtime *runtime;
2157 printk("pcm_oss: mmap begin\n");
2159 pcm_oss_file = file->private_data;
2160 switch ((area->vm_flags & (VM_READ | VM_WRITE))) {
2161 case VM_READ | VM_WRITE:
2162 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2167 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2170 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2175 /* set VM_READ access as well to fix memset() routines that do
2176 reads before writes (to improve performance) */
2177 area->vm_flags |= VM_READ;
2178 if (substream == NULL)
2180 runtime = substream->runtime;
2181 if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID))
2183 if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED)
2184 runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED;
2188 if (runtime->oss.params) {
2189 if ((err = snd_pcm_oss_change_params(substream)) < 0)
2192 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
2193 if (runtime->oss.plugin_first != NULL)
2197 if (area->vm_pgoff != 0)
2200 err = snd_pcm_mmap_data(substream, file, area);
2203 runtime->oss.mmap_bytes = area->vm_end - area->vm_start;
2204 runtime->silence_threshold = 0;
2205 runtime->silence_size = 0;
2207 printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes);
2209 /* In mmap mode we never stop */
2210 runtime->stop_threshold = runtime->boundary;
2215 #ifdef CONFIG_PROC_FS
2220 static void snd_pcm_oss_proc_read(struct snd_info_entry *entry,
2221 struct snd_info_buffer *buffer)
2223 struct snd_pcm_str *pstr = entry->private_data;
2224 struct snd_pcm_oss_setup *setup = pstr->oss.setup_list;
2225 mutex_lock(&pstr->oss.setup_mutex);
2227 snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n",
2231 setup->disable ? " disable" : "",
2232 setup->direct ? " direct" : "",
2233 setup->block ? " block" : "",
2234 setup->nonblock ? " non-block" : "",
2235 setup->partialfrag ? " partial-frag" : "",
2236 setup->nosilence ? " no-silence" : "");
2237 setup = setup->next;
2239 mutex_unlock(&pstr->oss.setup_mutex);
2242 static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr)
2244 struct snd_pcm_oss_setup *setup, *setupn;
2246 for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL;
2247 setup; setup = setupn) {
2248 setupn = setup->next;
2249 kfree(setup->task_name);
2252 pstr->oss.setup_list = NULL;
2255 static void snd_pcm_oss_proc_write(struct snd_info_entry *entry,
2256 struct snd_info_buffer *buffer)
2258 struct snd_pcm_str *pstr = entry->private_data;
2259 char line[128], str[32], task_name[32], *ptr;
2261 struct snd_pcm_oss_setup *setup, *setup1, template;
2263 while (!snd_info_get_line(buffer, line, sizeof(line))) {
2264 mutex_lock(&pstr->oss.setup_mutex);
2265 memset(&template, 0, sizeof(template));
2266 ptr = snd_info_get_str(task_name, line, sizeof(task_name));
2267 if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) {
2268 snd_pcm_oss_proc_free_setup_list(pstr);
2269 mutex_unlock(&pstr->oss.setup_mutex);
2272 for (setup = pstr->oss.setup_list; setup; setup = setup->next) {
2273 if (!strcmp(setup->task_name, task_name)) {
2278 ptr = snd_info_get_str(str, ptr, sizeof(str));
2279 template.periods = simple_strtoul(str, NULL, 10);
2280 ptr = snd_info_get_str(str, ptr, sizeof(str));
2281 template.period_size = simple_strtoul(str, NULL, 10);
2282 for (idx1 = 31; idx1 >= 0; idx1--)
2283 if (template.period_size & (1 << idx1))
2285 for (idx1--; idx1 >= 0; idx1--)
2286 template.period_size &= ~(1 << idx1);
2288 ptr = snd_info_get_str(str, ptr, sizeof(str));
2289 if (!strcmp(str, "disable")) {
2290 template.disable = 1;
2291 } else if (!strcmp(str, "direct")) {
2292 template.direct = 1;
2293 } else if (!strcmp(str, "block")) {
2295 } else if (!strcmp(str, "non-block")) {
2296 template.nonblock = 1;
2297 } else if (!strcmp(str, "partial-frag")) {
2298 template.partialfrag = 1;
2299 } else if (!strcmp(str, "no-silence")) {
2300 template.nosilence = 1;
2301 } else if (!strcmp(str, "buggy-ptr")) {
2302 template.buggyptr = 1;
2305 if (setup == NULL) {
2306 setup = kmalloc(sizeof(*setup), GFP_KERNEL);
2308 buffer->error = -ENOMEM;
2309 mutex_lock(&pstr->oss.setup_mutex);
2312 if (pstr->oss.setup_list == NULL)
2313 pstr->oss.setup_list = setup;
2315 for (setup1 = pstr->oss.setup_list;
2316 setup1->next; setup1 = setup1->next);
2317 setup1->next = setup;
2319 template.task_name = kstrdup(task_name, GFP_KERNEL);
2320 if (! template.task_name) {
2322 buffer->error = -ENOMEM;
2323 mutex_lock(&pstr->oss.setup_mutex);
2328 mutex_unlock(&pstr->oss.setup_mutex);
2332 static void snd_pcm_oss_proc_init(struct snd_pcm *pcm)
2335 for (stream = 0; stream < 2; ++stream) {
2336 struct snd_info_entry *entry;
2337 struct snd_pcm_str *pstr = &pcm->streams[stream];
2338 if (pstr->substream_count == 0)
2340 if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) {
2341 entry->content = SNDRV_INFO_CONTENT_TEXT;
2342 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
2343 entry->c.text.read_size = 8192;
2344 entry->c.text.read = snd_pcm_oss_proc_read;
2345 entry->c.text.write_size = 8192;
2346 entry->c.text.write = snd_pcm_oss_proc_write;
2347 entry->private_data = pstr;
2348 if (snd_info_register(entry) < 0) {
2349 snd_info_free_entry(entry);
2353 pstr->oss.proc_entry = entry;
2357 static void snd_pcm_oss_proc_done(struct snd_pcm *pcm)
2360 for (stream = 0; stream < 2; ++stream) {
2361 struct snd_pcm_str *pstr = &pcm->streams[stream];
2362 if (pstr->oss.proc_entry) {
2363 snd_info_unregister(pstr->oss.proc_entry);
2364 pstr->oss.proc_entry = NULL;
2365 snd_pcm_oss_proc_free_setup_list(pstr);
2369 #else /* !CONFIG_PROC_FS */
2370 #define snd_pcm_oss_proc_init(pcm)
2371 #define snd_pcm_oss_proc_done(pcm)
2372 #endif /* CONFIG_PROC_FS */
2378 static struct file_operations snd_pcm_oss_f_reg =
2380 .owner = THIS_MODULE,
2381 .read = snd_pcm_oss_read,
2382 .write = snd_pcm_oss_write,
2383 .open = snd_pcm_oss_open,
2384 .release = snd_pcm_oss_release,
2385 .poll = snd_pcm_oss_poll,
2386 .unlocked_ioctl = snd_pcm_oss_ioctl,
2387 .compat_ioctl = snd_pcm_oss_ioctl_compat,
2388 .mmap = snd_pcm_oss_mmap,
2391 static void register_oss_dsp(struct snd_pcm *pcm, int index)
2394 sprintf(name, "dsp%i%i", pcm->card->number, pcm->device);
2395 if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
2396 pcm->card, index, &snd_pcm_oss_f_reg,
2398 snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n",
2399 pcm->card->number, pcm->device);
2403 static int snd_pcm_oss_register_minor(struct snd_pcm *pcm)
2406 if (dsp_map[pcm->card->number] == (int)pcm->device) {
2409 register_oss_dsp(pcm, 0);
2410 duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 &&
2411 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count &&
2412 !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX));
2413 sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : "");
2414 #ifdef SNDRV_OSS_INFO_DEV_AUDIO
2415 snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO,
2420 pcm->oss.reg_mask |= 1;
2422 if (adsp_map[pcm->card->number] == (int)pcm->device) {
2423 register_oss_dsp(pcm, 1);
2425 pcm->oss.reg_mask |= 2;
2429 snd_pcm_oss_proc_init(pcm);
2434 static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm)
2437 if (pcm->oss.reg_mask & 1) {
2438 pcm->oss.reg_mask &= ~1;
2439 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
2442 if (pcm->oss.reg_mask & 2) {
2443 pcm->oss.reg_mask &= ~2;
2444 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
2451 static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm)
2453 snd_pcm_oss_disconnect_minor(pcm);
2455 if (dsp_map[pcm->card->number] == (int)pcm->device) {
2456 #ifdef SNDRV_OSS_INFO_DEV_AUDIO
2457 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number);
2461 snd_pcm_oss_proc_done(pcm);
2466 static struct snd_pcm_notify snd_pcm_oss_notify =
2468 .n_register = snd_pcm_oss_register_minor,
2469 .n_disconnect = snd_pcm_oss_disconnect_minor,
2470 .n_unregister = snd_pcm_oss_unregister_minor,
2473 static int __init alsa_pcm_oss_init(void)
2478 /* check device map table */
2479 for (i = 0; i < SNDRV_CARDS; i++) {
2480 if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) {
2481 snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n",
2485 if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) {
2486 snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n",
2491 if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0)
2496 static void __exit alsa_pcm_oss_exit(void)
2498 snd_pcm_notify(&snd_pcm_oss_notify, 1);
2501 module_init(alsa_pcm_oss_init)
2502 module_exit(alsa_pcm_oss_exit)