2 * Digital Audio (PCM) abstract layer / OSS compatible
3 * Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/time.h>
32 #include <linux/vmalloc.h>
33 #include <linux/moduleparam.h>
34 #include <linux/math64.h>
35 #include <linux/string.h>
36 #include <sound/core.h>
37 #include <sound/minors.h>
38 #include <sound/pcm.h>
39 #include <sound/pcm_params.h>
40 #include "pcm_plugin.h"
41 #include <sound/info.h>
42 #include <linux/soundcard.h>
43 #include <sound/initval.h>
45 #define OSS_ALSAEMULVER _SIOR ('M', 249, int)
47 static int dsp_map[SNDRV_CARDS];
48 static int adsp_map[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = 1};
49 static int nonblock_open = 1;
51 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Abramo Bagnara <abramo@alsa-project.org>");
52 MODULE_DESCRIPTION("PCM OSS emulation for ALSA.");
53 MODULE_LICENSE("GPL");
54 module_param_array(dsp_map, int, NULL, 0444);
55 MODULE_PARM_DESC(dsp_map, "PCM device number assigned to 1st OSS device.");
56 module_param_array(adsp_map, int, NULL, 0444);
57 MODULE_PARM_DESC(adsp_map, "PCM device number assigned to 2nd OSS device.");
58 module_param(nonblock_open, bool, 0644);
59 MODULE_PARM_DESC(nonblock_open, "Don't block opening busy PCM devices.");
60 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM);
61 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_PCM1);
63 extern int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg);
64 static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file);
65 static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file);
66 static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file);
68 static inline mm_segment_t snd_enter_user(void)
70 mm_segment_t fs = get_fs();
75 static inline void snd_leave_user(mm_segment_t fs)
81 * helper functions to process hw_params
83 static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin)
90 } else if (i->min == min && !i->openmin && openmin) {
100 if (snd_interval_checkempty(i)) {
101 snd_interval_none(i);
107 static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax)
112 i->openmax = openmax;
114 } else if (i->max == max && !i->openmax && openmax) {
124 if (snd_interval_checkempty(i)) {
125 snd_interval_none(i);
131 static int snd_interval_refine_set(struct snd_interval *i, unsigned int val)
133 struct snd_interval t;
136 t.openmin = t.openmax = 0;
138 return snd_interval_refine(i, &t);
142 * snd_pcm_hw_param_value_min
143 * @params: the hw_params instance
144 * @var: parameter to retrieve
145 * @dir: pointer to the direction (-1,0,1) or NULL
147 * Return the minimum value for field PAR.
150 snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params,
151 snd_pcm_hw_param_t var, int *dir)
153 if (hw_is_mask(var)) {
156 return snd_mask_min(hw_param_mask_c(params, var));
158 if (hw_is_interval(var)) {
159 const struct snd_interval *i = hw_param_interval_c(params, var);
162 return snd_interval_min(i);
168 * snd_pcm_hw_param_value_max
169 * @params: the hw_params instance
170 * @var: parameter to retrieve
171 * @dir: pointer to the direction (-1,0,1) or NULL
173 * Return the maximum value for field PAR.
176 snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params,
177 snd_pcm_hw_param_t var, int *dir)
179 if (hw_is_mask(var)) {
182 return snd_mask_max(hw_param_mask_c(params, var));
184 if (hw_is_interval(var)) {
185 const struct snd_interval *i = hw_param_interval_c(params, var);
187 *dir = - (int) i->openmax;
188 return snd_interval_max(i);
193 static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params,
194 snd_pcm_hw_param_t var,
195 const struct snd_mask *val)
198 changed = snd_mask_refine(hw_param_mask(params, var), val);
200 params->cmask |= 1 << var;
201 params->rmask |= 1 << var;
206 static int snd_pcm_hw_param_mask(struct snd_pcm_substream *pcm,
207 struct snd_pcm_hw_params *params,
208 snd_pcm_hw_param_t var,
209 const struct snd_mask *val)
211 int changed = _snd_pcm_hw_param_mask(params, var, val);
215 int err = snd_pcm_hw_refine(pcm, params);
222 static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params,
223 snd_pcm_hw_param_t var, unsigned int val,
231 } else if (dir < 0) {
239 changed = snd_mask_refine_min(hw_param_mask(params, var),
241 else if (hw_is_interval(var))
242 changed = snd_interval_refine_min(hw_param_interval(params, var),
247 params->cmask |= 1 << var;
248 params->rmask |= 1 << var;
254 * snd_pcm_hw_param_min
256 * @params: the hw_params instance
257 * @var: parameter to retrieve
258 * @val: minimal value
259 * @dir: pointer to the direction (-1,0,1) or NULL
261 * Inside configuration space defined by PARAMS remove from PAR all
262 * values < VAL. Reduce configuration space accordingly.
263 * Return new minimum or -EINVAL if the configuration space is empty
265 static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm,
266 struct snd_pcm_hw_params *params,
267 snd_pcm_hw_param_t var, unsigned int val,
270 int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0);
274 int err = snd_pcm_hw_refine(pcm, params);
278 return snd_pcm_hw_param_value_min(params, var, dir);
281 static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params,
282 snd_pcm_hw_param_t var, unsigned int val,
290 } else if (dir > 0) {
295 if (hw_is_mask(var)) {
296 if (val == 0 && open) {
297 snd_mask_none(hw_param_mask(params, var));
300 changed = snd_mask_refine_max(hw_param_mask(params, var),
302 } else if (hw_is_interval(var))
303 changed = snd_interval_refine_max(hw_param_interval(params, var),
308 params->cmask |= 1 << var;
309 params->rmask |= 1 << var;
315 * snd_pcm_hw_param_max
317 * @params: the hw_params instance
318 * @var: parameter to retrieve
319 * @val: maximal value
320 * @dir: pointer to the direction (-1,0,1) or NULL
322 * Inside configuration space defined by PARAMS remove from PAR all
323 * values >= VAL + 1. Reduce configuration space accordingly.
324 * Return new maximum or -EINVAL if the configuration space is empty
326 static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm,
327 struct snd_pcm_hw_params *params,
328 snd_pcm_hw_param_t var, unsigned int val,
331 int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0);
335 int err = snd_pcm_hw_refine(pcm, params);
339 return snd_pcm_hw_param_value_max(params, var, dir);
342 static int boundary_sub(int a, int adir,
346 adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0);
347 bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0);
352 } else if (*cdir == 2) {
358 static int boundary_lt(unsigned int a, int adir,
359 unsigned int b, int bdir)
371 return a < b || (a == b && adir < bdir);
374 /* Return 1 if min is nearer to best than max */
375 static int boundary_nearer(int min, int mindir,
376 int best, int bestdir,
381 boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir);
382 boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir);
383 return boundary_lt(dmin, dmindir, dmax, dmaxdir);
387 * snd_pcm_hw_param_near
389 * @params: the hw_params instance
390 * @var: parameter to retrieve
391 * @best: value to set
392 * @dir: pointer to the direction (-1,0,1) or NULL
394 * Inside configuration space defined by PARAMS set PAR to the available value
395 * nearest to VAL. Reduce configuration space accordingly.
396 * This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS,
397 * SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT.
398 * Return the value found.
400 static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm,
401 struct snd_pcm_hw_params *params,
402 snd_pcm_hw_param_t var, unsigned int best,
405 struct snd_pcm_hw_params *save = NULL;
407 unsigned int saved_min;
411 int valdir = dir ? *dir : 0;
416 mindir = maxdir = valdir;
419 else if (maxdir == 0)
425 save = kmalloc(sizeof(*save), GFP_KERNEL);
430 min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir);
432 struct snd_pcm_hw_params *params1;
435 if ((unsigned int)min == saved_min && mindir == valdir)
437 params1 = kmalloc(sizeof(*params1), GFP_KERNEL);
438 if (params1 == NULL) {
443 max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir);
448 if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) {
455 max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir);
463 v = snd_pcm_hw_param_last(pcm, params, var, dir);
465 v = snd_pcm_hw_param_first(pcm, params, var, dir);
470 static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params,
471 snd_pcm_hw_param_t var, unsigned int val,
475 if (hw_is_mask(var)) {
476 struct snd_mask *m = hw_param_mask(params, var);
477 if (val == 0 && dir < 0) {
485 changed = snd_mask_refine_set(hw_param_mask(params, var), val);
487 } else if (hw_is_interval(var)) {
488 struct snd_interval *i = hw_param_interval(params, var);
489 if (val == 0 && dir < 0) {
491 snd_interval_none(i);
493 changed = snd_interval_refine_set(i, val);
495 struct snd_interval t;
507 changed = snd_interval_refine(i, &t);
512 params->cmask |= 1 << var;
513 params->rmask |= 1 << var;
519 * snd_pcm_hw_param_set
521 * @params: the hw_params instance
522 * @var: parameter to retrieve
524 * @dir: pointer to the direction (-1,0,1) or NULL
526 * Inside configuration space defined by PARAMS remove from PAR all
527 * values != VAL. Reduce configuration space accordingly.
528 * Return VAL or -EINVAL if the configuration space is empty
530 static int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm,
531 struct snd_pcm_hw_params *params,
532 snd_pcm_hw_param_t var, unsigned int val,
535 int changed = _snd_pcm_hw_param_set(params, var, val, dir);
539 int err = snd_pcm_hw_refine(pcm, params);
543 return snd_pcm_hw_param_value(params, var, NULL);
546 static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params,
547 snd_pcm_hw_param_t var)
550 changed = snd_interval_setinteger(hw_param_interval(params, var));
552 params->cmask |= 1 << var;
553 params->rmask |= 1 << var;
562 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
563 static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream)
565 struct snd_pcm_runtime *runtime = substream->runtime;
566 struct snd_pcm_plugin *plugin, *next;
568 plugin = runtime->oss.plugin_first;
571 snd_pcm_plugin_free(plugin);
574 runtime->oss.plugin_first = runtime->oss.plugin_last = NULL;
578 static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin)
580 struct snd_pcm_runtime *runtime = plugin->plug->runtime;
581 plugin->next = runtime->oss.plugin_first;
583 if (runtime->oss.plugin_first) {
584 runtime->oss.plugin_first->prev = plugin;
585 runtime->oss.plugin_first = plugin;
587 runtime->oss.plugin_last =
588 runtime->oss.plugin_first = plugin;
593 int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin)
595 struct snd_pcm_runtime *runtime = plugin->plug->runtime;
597 plugin->prev = runtime->oss.plugin_last;
598 if (runtime->oss.plugin_last) {
599 runtime->oss.plugin_last->next = plugin;
600 runtime->oss.plugin_last = plugin;
602 runtime->oss.plugin_last =
603 runtime->oss.plugin_first = plugin;
607 #endif /* CONFIG_SND_PCM_OSS_PLUGINS */
609 static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames)
611 struct snd_pcm_runtime *runtime = substream->runtime;
612 long buffer_size = snd_pcm_lib_buffer_bytes(substream);
613 long bytes = frames_to_bytes(runtime, frames);
614 if (buffer_size == runtime->oss.buffer_bytes)
616 #if BITS_PER_LONG >= 64
617 return runtime->oss.buffer_bytes * bytes / buffer_size;
620 u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes;
621 return div_u64(bsize, buffer_size);
626 static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes)
628 struct snd_pcm_runtime *runtime = substream->runtime;
629 long buffer_size = snd_pcm_lib_buffer_bytes(substream);
630 if (buffer_size == runtime->oss.buffer_bytes)
631 return bytes_to_frames(runtime, bytes);
632 return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes);
636 snd_pcm_uframes_t get_hw_ptr_period(struct snd_pcm_runtime *runtime)
638 return runtime->hw_ptr_interrupt;
641 /* define extended formats in the recent OSS versions (if any) */
643 #define AFMT_S32_LE 0x00001000
644 #define AFMT_S32_BE 0x00002000
645 #define AFMT_S24_LE 0x00008000
646 #define AFMT_S24_BE 0x00010000
647 #define AFMT_S24_PACKED 0x00040000
649 /* other supported formats */
650 #define AFMT_FLOAT 0x00004000
651 #define AFMT_SPDIF_RAW 0x00020000
653 /* unsupported formats */
654 #define AFMT_AC3 0x00000400
655 #define AFMT_VORBIS 0x00000800
657 static int snd_pcm_oss_format_from(int format)
660 case AFMT_MU_LAW: return SNDRV_PCM_FORMAT_MU_LAW;
661 case AFMT_A_LAW: return SNDRV_PCM_FORMAT_A_LAW;
662 case AFMT_IMA_ADPCM: return SNDRV_PCM_FORMAT_IMA_ADPCM;
663 case AFMT_U8: return SNDRV_PCM_FORMAT_U8;
664 case AFMT_S16_LE: return SNDRV_PCM_FORMAT_S16_LE;
665 case AFMT_S16_BE: return SNDRV_PCM_FORMAT_S16_BE;
666 case AFMT_S8: return SNDRV_PCM_FORMAT_S8;
667 case AFMT_U16_LE: return SNDRV_PCM_FORMAT_U16_LE;
668 case AFMT_U16_BE: return SNDRV_PCM_FORMAT_U16_BE;
669 case AFMT_MPEG: return SNDRV_PCM_FORMAT_MPEG;
670 case AFMT_S32_LE: return SNDRV_PCM_FORMAT_S32_LE;
671 case AFMT_S32_BE: return SNDRV_PCM_FORMAT_S32_BE;
672 case AFMT_S24_LE: return SNDRV_PCM_FORMAT_S24_LE;
673 case AFMT_S24_BE: return SNDRV_PCM_FORMAT_S24_BE;
674 case AFMT_S24_PACKED: return SNDRV_PCM_FORMAT_S24_3LE;
675 case AFMT_FLOAT: return SNDRV_PCM_FORMAT_FLOAT;
676 case AFMT_SPDIF_RAW: return SNDRV_PCM_FORMAT_IEC958_SUBFRAME;
677 default: return SNDRV_PCM_FORMAT_U8;
681 static int snd_pcm_oss_format_to(int format)
684 case SNDRV_PCM_FORMAT_MU_LAW: return AFMT_MU_LAW;
685 case SNDRV_PCM_FORMAT_A_LAW: return AFMT_A_LAW;
686 case SNDRV_PCM_FORMAT_IMA_ADPCM: return AFMT_IMA_ADPCM;
687 case SNDRV_PCM_FORMAT_U8: return AFMT_U8;
688 case SNDRV_PCM_FORMAT_S16_LE: return AFMT_S16_LE;
689 case SNDRV_PCM_FORMAT_S16_BE: return AFMT_S16_BE;
690 case SNDRV_PCM_FORMAT_S8: return AFMT_S8;
691 case SNDRV_PCM_FORMAT_U16_LE: return AFMT_U16_LE;
692 case SNDRV_PCM_FORMAT_U16_BE: return AFMT_U16_BE;
693 case SNDRV_PCM_FORMAT_MPEG: return AFMT_MPEG;
694 case SNDRV_PCM_FORMAT_S32_LE: return AFMT_S32_LE;
695 case SNDRV_PCM_FORMAT_S32_BE: return AFMT_S32_BE;
696 case SNDRV_PCM_FORMAT_S24_LE: return AFMT_S24_LE;
697 case SNDRV_PCM_FORMAT_S24_BE: return AFMT_S24_BE;
698 case SNDRV_PCM_FORMAT_S24_3LE: return AFMT_S24_PACKED;
699 case SNDRV_PCM_FORMAT_FLOAT: return AFMT_FLOAT;
700 case SNDRV_PCM_FORMAT_IEC958_SUBFRAME: return AFMT_SPDIF_RAW;
701 default: return -EINVAL;
705 static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
706 struct snd_pcm_hw_params *oss_params,
707 struct snd_pcm_hw_params *slave_params)
710 size_t oss_buffer_size, oss_period_size, oss_periods;
711 size_t min_period_size, max_period_size;
712 struct snd_pcm_runtime *runtime = substream->runtime;
713 size_t oss_frame_size;
715 oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) *
716 params_channels(oss_params) / 8;
718 oss_buffer_size = snd_pcm_plug_client_size(substream,
719 snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size;
720 oss_buffer_size = 1 << ld2(oss_buffer_size);
721 if (atomic_read(&substream->mmap_count)) {
722 if (oss_buffer_size > runtime->oss.mmap_bytes)
723 oss_buffer_size = runtime->oss.mmap_bytes;
726 if (substream->oss.setup.period_size > 16)
727 oss_period_size = substream->oss.setup.period_size;
728 else if (runtime->oss.fragshift) {
729 oss_period_size = 1 << runtime->oss.fragshift;
730 if (oss_period_size > oss_buffer_size / 2)
731 oss_period_size = oss_buffer_size / 2;
734 size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8;
736 oss_period_size = oss_buffer_size;
738 oss_period_size /= 2;
739 } while (oss_period_size > bytes_per_sec);
740 if (runtime->oss.subdivision == 0) {
742 if (oss_period_size / sd > 4096)
744 if (oss_period_size / sd < 4096)
747 sd = runtime->oss.subdivision;
748 oss_period_size /= sd;
749 if (oss_period_size < 16)
750 oss_period_size = 16;
753 min_period_size = snd_pcm_plug_client_size(substream,
754 snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
755 min_period_size *= oss_frame_size;
756 min_period_size = 1 << (ld2(min_period_size - 1) + 1);
757 if (oss_period_size < min_period_size)
758 oss_period_size = min_period_size;
760 max_period_size = snd_pcm_plug_client_size(substream,
761 snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
762 max_period_size *= oss_frame_size;
763 max_period_size = 1 << ld2(max_period_size);
764 if (oss_period_size > max_period_size)
765 oss_period_size = max_period_size;
767 oss_periods = oss_buffer_size / oss_period_size;
769 if (substream->oss.setup.periods > 1)
770 oss_periods = substream->oss.setup.periods;
772 s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL);
773 if (runtime->oss.maxfrags && s > runtime->oss.maxfrags)
774 s = runtime->oss.maxfrags;
778 s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL);
784 while (oss_period_size * oss_periods > oss_buffer_size)
785 oss_period_size /= 2;
787 if (oss_period_size < 16)
789 runtime->oss.period_bytes = oss_period_size;
790 runtime->oss.period_frames = 1;
791 runtime->oss.periods = oss_periods;
795 static int choose_rate(struct snd_pcm_substream *substream,
796 struct snd_pcm_hw_params *params, unsigned int best_rate)
798 struct snd_interval *it;
799 struct snd_pcm_hw_params *save;
800 unsigned int rate, prev;
802 save = kmalloc(sizeof(*save), GFP_KERNEL);
806 it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE);
808 /* try multiples of the best rate */
811 if (it->max < rate || (it->max == rate && it->openmax))
813 if (it->min < rate || (it->min == rate && !it->openmin)) {
815 ret = snd_pcm_hw_param_set(substream, params,
816 SNDRV_PCM_HW_PARAM_RATE,
818 if (ret == (int)rate) {
830 /* not found, use the nearest rate */
832 return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL);
835 static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
837 struct snd_pcm_runtime *runtime = substream->runtime;
838 struct snd_pcm_hw_params *params, *sparams;
839 struct snd_pcm_sw_params *sw_params;
840 ssize_t oss_buffer_size, oss_period_size;
841 size_t oss_frame_size;
844 int format, sformat, n;
845 struct snd_mask sformat_mask;
846 struct snd_mask mask;
848 if (mutex_lock_interruptible(&runtime->oss.params_lock))
850 sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL);
851 params = kmalloc(sizeof(*params), GFP_KERNEL);
852 sparams = kmalloc(sizeof(*sparams), GFP_KERNEL);
853 if (!sw_params || !params || !sparams) {
854 snd_printd("No memory\n");
859 if (atomic_read(&substream->mmap_count))
862 direct = substream->oss.setup.direct;
864 _snd_pcm_hw_params_any(sparams);
865 _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS);
866 _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0);
867 snd_mask_none(&mask);
868 if (atomic_read(&substream->mmap_count))
869 snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED);
871 snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED);
873 snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED);
875 err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask);
877 snd_printd("No usable accesses\n");
881 choose_rate(substream, sparams, runtime->oss.rate);
882 snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL);
884 format = snd_pcm_oss_format_from(runtime->oss.format);
886 sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT);
890 sformat = snd_pcm_plug_slave_format(format, &sformat_mask);
892 if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) {
893 for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) {
894 if (snd_mask_test(&sformat_mask, sformat) &&
895 snd_pcm_oss_format_to(sformat) >= 0)
898 if (sformat > SNDRV_PCM_FORMAT_LAST) {
899 snd_printd("Cannot find a format!!!\n");
904 err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0);
909 memcpy(params, sparams, sizeof(*params));
911 _snd_pcm_hw_params_any(params);
912 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS,
913 SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0);
914 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT,
915 snd_pcm_oss_format_from(runtime->oss.format), 0);
916 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS,
917 runtime->oss.channels, 0);
918 _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE,
919 runtime->oss.rate, 0);
920 pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n",
921 params_access(params), params_format(params),
922 params_channels(params), params_rate(params));
924 pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n",
925 params_access(sparams), params_format(sparams),
926 params_channels(sparams), params_rate(sparams));
928 oss_frame_size = snd_pcm_format_physical_width(params_format(params)) *
929 params_channels(params) / 8;
931 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
932 snd_pcm_oss_plugin_clear(substream);
934 /* add necessary plugins */
935 snd_pcm_oss_plugin_clear(substream);
936 if ((err = snd_pcm_plug_format_plugins(substream,
939 snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err);
940 snd_pcm_oss_plugin_clear(substream);
943 if (runtime->oss.plugin_first) {
944 struct snd_pcm_plugin *plugin;
945 if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) {
946 snd_printd("snd_pcm_plugin_build_io failed: %i\n", err);
947 snd_pcm_oss_plugin_clear(substream);
950 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
951 err = snd_pcm_plugin_append(plugin);
953 err = snd_pcm_plugin_insert(plugin);
956 snd_pcm_oss_plugin_clear(substream);
963 err = snd_pcm_oss_period_size(substream, params, sparams);
967 n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size);
968 err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL);
972 err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS,
973 runtime->oss.periods, NULL);
977 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
979 if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) {
980 snd_printd("HW_PARAMS failed: %i\n", err);
984 memset(sw_params, 0, sizeof(*sw_params));
985 if (runtime->oss.trigger) {
986 sw_params->start_threshold = 1;
988 sw_params->start_threshold = runtime->boundary;
990 if (atomic_read(&substream->mmap_count) ||
991 substream->stream == SNDRV_PCM_STREAM_CAPTURE)
992 sw_params->stop_threshold = runtime->boundary;
994 sw_params->stop_threshold = runtime->buffer_size;
995 sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE;
996 sw_params->period_step = 1;
997 sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
998 1 : runtime->period_size;
999 if (atomic_read(&substream->mmap_count) ||
1000 substream->oss.setup.nosilence) {
1001 sw_params->silence_threshold = 0;
1002 sw_params->silence_size = 0;
1004 snd_pcm_uframes_t frames;
1005 frames = runtime->period_size + 16;
1006 if (frames > runtime->buffer_size)
1007 frames = runtime->buffer_size;
1008 sw_params->silence_threshold = frames;
1009 sw_params->silence_size = frames;
1012 if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) {
1013 snd_printd("SW_PARAMS failed: %i\n", err);
1017 runtime->oss.periods = params_periods(sparams);
1018 oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams));
1019 if (oss_period_size < 0) {
1023 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
1024 if (runtime->oss.plugin_first) {
1025 err = snd_pcm_plug_alloc(substream, oss_period_size);
1030 oss_period_size *= oss_frame_size;
1032 oss_buffer_size = oss_period_size * runtime->oss.periods;
1033 if (oss_buffer_size < 0) {
1038 runtime->oss.period_bytes = oss_period_size;
1039 runtime->oss.buffer_bytes = oss_buffer_size;
1041 pdprintf("oss: period bytes = %i, buffer bytes = %i\n",
1042 runtime->oss.period_bytes,
1043 runtime->oss.buffer_bytes);
1044 pdprintf("slave: period_size = %i, buffer_size = %i\n",
1045 params_period_size(sparams),
1046 params_buffer_size(sparams));
1048 runtime->oss.format = snd_pcm_oss_format_to(params_format(params));
1049 runtime->oss.channels = params_channels(params);
1050 runtime->oss.rate = params_rate(params);
1052 vfree(runtime->oss.buffer);
1053 runtime->oss.buffer = vmalloc(runtime->oss.period_bytes);
1054 if (!runtime->oss.buffer) {
1059 runtime->oss.params = 0;
1060 runtime->oss.prepare = 1;
1061 runtime->oss.buffer_used = 0;
1062 if (runtime->dma_area)
1063 snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes));
1065 runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size);
1072 mutex_unlock(&runtime->oss.params_lock);
1076 static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream)
1079 struct snd_pcm_substream *asubstream = NULL, *substream;
1081 for (idx = 0; idx < 2; idx++) {
1082 substream = pcm_oss_file->streams[idx];
1083 if (substream == NULL)
1085 if (asubstream == NULL)
1086 asubstream = substream;
1087 if (substream->runtime->oss.params) {
1088 err = snd_pcm_oss_change_params(substream);
1096 *r_substream = asubstream;
1100 static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream)
1103 struct snd_pcm_runtime *runtime = substream->runtime;
1105 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL);
1107 snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n");
1110 runtime->oss.prepare = 0;
1111 runtime->oss.prev_hw_ptr_period = 0;
1112 runtime->oss.period_ptr = 0;
1113 runtime->oss.buffer_used = 0;
1118 static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream)
1120 struct snd_pcm_runtime *runtime;
1123 if (substream == NULL)
1125 runtime = substream->runtime;
1126 if (runtime->oss.params) {
1127 err = snd_pcm_oss_change_params(substream);
1131 if (runtime->oss.prepare) {
1132 err = snd_pcm_oss_prepare(substream);
1139 static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay)
1141 struct snd_pcm_runtime *runtime;
1142 snd_pcm_uframes_t frames;
1146 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay);
1149 runtime = substream->runtime;
1150 if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size)
1152 /* in case of overrun, skip whole periods like OSS/Linux driver does */
1153 /* until avail(delay) <= buffer_size */
1154 frames = (*delay - runtime->buffer_size) + runtime->period_size - 1;
1155 frames /= runtime->period_size;
1156 frames *= runtime->period_size;
1157 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames);
1164 snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel)
1166 struct snd_pcm_runtime *runtime = substream->runtime;
1169 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
1170 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
1172 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
1173 printk(KERN_DEBUG "pcm_oss: write: "
1174 "recovering from XRUN\n");
1176 printk(KERN_DEBUG "pcm_oss: write: "
1177 "recovering from SUSPEND\n");
1179 ret = snd_pcm_oss_prepare(substream);
1185 fs = snd_enter_user();
1186 ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames);
1189 ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames);
1191 if (ret != -EPIPE && ret != -ESTRPIPE)
1193 /* test, if we can't store new data, because the stream */
1194 /* has not been started */
1195 if (runtime->status->state == SNDRV_PCM_STATE_PREPARED)
1201 snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel)
1203 struct snd_pcm_runtime *runtime = substream->runtime;
1204 snd_pcm_sframes_t delay;
1207 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
1208 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
1210 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
1211 printk(KERN_DEBUG "pcm_oss: read: "
1212 "recovering from XRUN\n");
1214 printk(KERN_DEBUG "pcm_oss: read: "
1215 "recovering from SUSPEND\n");
1217 ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
1220 } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) {
1221 ret = snd_pcm_oss_prepare(substream);
1225 ret = snd_pcm_oss_capture_position_fixup(substream, &delay);
1230 fs = snd_enter_user();
1231 ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames);
1234 ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames);
1236 if (ret == -EPIPE) {
1237 if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
1238 ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
1244 if (ret != -ESTRPIPE)
1250 snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
1252 struct snd_pcm_runtime *runtime = substream->runtime;
1255 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
1256 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
1258 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
1259 printk(KERN_DEBUG "pcm_oss: writev: "
1260 "recovering from XRUN\n");
1262 printk(KERN_DEBUG "pcm_oss: writev: "
1263 "recovering from SUSPEND\n");
1265 ret = snd_pcm_oss_prepare(substream);
1271 fs = snd_enter_user();
1272 ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames);
1275 ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames);
1277 if (ret != -EPIPE && ret != -ESTRPIPE)
1280 /* test, if we can't store new data, because the stream */
1281 /* has not been started */
1282 if (runtime->status->state == SNDRV_PCM_STATE_PREPARED)
1288 snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel)
1290 struct snd_pcm_runtime *runtime = substream->runtime;
1293 if (runtime->status->state == SNDRV_PCM_STATE_XRUN ||
1294 runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
1296 if (runtime->status->state == SNDRV_PCM_STATE_XRUN)
1297 printk(KERN_DEBUG "pcm_oss: readv: "
1298 "recovering from XRUN\n");
1300 printk(KERN_DEBUG "pcm_oss: readv: "
1301 "recovering from SUSPEND\n");
1303 ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
1306 } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) {
1307 ret = snd_pcm_oss_prepare(substream);
1313 fs = snd_enter_user();
1314 ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames);
1317 ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames);
1319 if (ret != -EPIPE && ret != -ESTRPIPE)
1325 static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel)
1327 struct snd_pcm_runtime *runtime = substream->runtime;
1328 snd_pcm_sframes_t frames, frames1;
1329 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
1330 if (runtime->oss.plugin_first) {
1331 struct snd_pcm_plugin_channel *channels;
1332 size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8;
1334 if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes))
1336 buf = runtime->oss.buffer;
1338 frames = bytes / oss_frame_bytes;
1339 frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels);
1342 frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1);
1345 bytes = frames1 * oss_frame_bytes;
1349 frames = bytes_to_frames(runtime, bytes);
1350 frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel);
1353 bytes = frames_to_bytes(runtime, frames1);
1358 static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes)
1362 struct snd_pcm_runtime *runtime = substream->runtime;
1364 if (atomic_read(&substream->mmap_count))
1367 if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
1369 mutex_lock(&runtime->oss.params_lock);
1371 if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
1373 if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes)
1374 tmp = runtime->oss.period_bytes - runtime->oss.buffer_used;
1376 if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) {
1381 runtime->oss.buffer_used += tmp;
1385 if (substream->oss.setup.partialfrag ||
1386 runtime->oss.buffer_used == runtime->oss.period_bytes) {
1387 tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr,
1388 runtime->oss.buffer_used - runtime->oss.period_ptr, 1);
1391 runtime->oss.bytes += tmp;
1392 runtime->oss.period_ptr += tmp;
1393 runtime->oss.period_ptr %= runtime->oss.period_bytes;
1394 if (runtime->oss.period_ptr == 0 ||
1395 runtime->oss.period_ptr == runtime->oss.buffer_used)
1396 runtime->oss.buffer_used = 0;
1397 else if ((substream->f_flags & O_NONBLOCK) != 0) {
1403 tmp = snd_pcm_oss_write2(substream,
1404 (const char __force *)buf,
1405 runtime->oss.period_bytes, 0);
1408 runtime->oss.bytes += tmp;
1412 if ((substream->f_flags & O_NONBLOCK) != 0 &&
1413 tmp != runtime->oss.period_bytes)
1417 mutex_unlock(&runtime->oss.params_lock);
1421 mutex_unlock(&runtime->oss.params_lock);
1422 return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
1425 static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel)
1427 struct snd_pcm_runtime *runtime = substream->runtime;
1428 snd_pcm_sframes_t frames, frames1;
1429 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
1430 char __user *final_dst = (char __user *)buf;
1431 if (runtime->oss.plugin_first) {
1432 struct snd_pcm_plugin_channel *channels;
1433 size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8;
1435 buf = runtime->oss.buffer;
1436 frames = bytes / oss_frame_bytes;
1437 frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels);
1440 frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1);
1443 bytes = frames1 * oss_frame_bytes;
1444 if (!in_kernel && copy_to_user(final_dst, buf, bytes))
1449 frames = bytes_to_frames(runtime, bytes);
1450 frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel);
1453 bytes = frames_to_bytes(runtime, frames1);
1458 static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes)
1462 struct snd_pcm_runtime *runtime = substream->runtime;
1464 if (atomic_read(&substream->mmap_count))
1467 if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
1469 mutex_lock(&runtime->oss.params_lock);
1471 if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
1472 if (runtime->oss.buffer_used == 0) {
1473 tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1);
1476 runtime->oss.bytes += tmp;
1477 runtime->oss.period_ptr = tmp;
1478 runtime->oss.buffer_used = tmp;
1481 if ((size_t) tmp > runtime->oss.buffer_used)
1482 tmp = runtime->oss.buffer_used;
1483 if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) {
1490 runtime->oss.buffer_used -= tmp;
1492 tmp = snd_pcm_oss_read2(substream, (char __force *)buf,
1493 runtime->oss.period_bytes, 0);
1496 runtime->oss.bytes += tmp;
1502 mutex_unlock(&runtime->oss.params_lock);
1506 mutex_unlock(&runtime->oss.params_lock);
1507 return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
1510 static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file)
1512 struct snd_pcm_substream *substream;
1514 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1515 if (substream != NULL) {
1516 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
1517 substream->runtime->oss.prepare = 1;
1519 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
1520 if (substream != NULL) {
1521 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
1522 substream->runtime->oss.prepare = 1;
1527 static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file)
1529 struct snd_pcm_substream *substream;
1532 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1533 if (substream != NULL) {
1534 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
1536 snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL);
1538 /* note: all errors from the start action are ignored */
1539 /* OSS apps do not know, how to handle them */
1543 static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size)
1545 struct snd_pcm_runtime *runtime;
1550 runtime = substream->runtime;
1551 init_waitqueue_entry(&wait, current);
1552 add_wait_queue(&runtime->sleep, &wait);
1554 printk(KERN_DEBUG "sync1: size = %li\n", size);
1557 result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1);
1559 runtime->oss.buffer_used = 0;
1563 if (result != 0 && result != -EAGAIN)
1566 set_current_state(TASK_INTERRUPTIBLE);
1567 snd_pcm_stream_lock_irq(substream);
1568 res = runtime->status->state;
1569 snd_pcm_stream_unlock_irq(substream);
1570 if (res != SNDRV_PCM_STATE_RUNNING) {
1571 set_current_state(TASK_RUNNING);
1574 res = schedule_timeout(10 * HZ);
1575 if (signal_pending(current)) {
1576 result = -ERESTARTSYS;
1580 snd_printk(KERN_ERR "OSS sync error - DMA timeout\n");
1585 remove_wait_queue(&runtime->sleep, &wait);
1589 static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
1592 unsigned int saved_f_flags;
1593 struct snd_pcm_substream *substream;
1594 struct snd_pcm_runtime *runtime;
1595 snd_pcm_format_t format;
1596 unsigned long width;
1599 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1600 if (substream != NULL) {
1601 runtime = substream->runtime;
1602 if (atomic_read(&substream->mmap_count))
1604 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
1606 format = snd_pcm_oss_format_from(runtime->oss.format);
1607 width = snd_pcm_format_physical_width(format);
1608 mutex_lock(&runtime->oss.params_lock);
1609 if (runtime->oss.buffer_used > 0) {
1611 printk(KERN_DEBUG "sync: buffer_used\n");
1613 size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width;
1614 snd_pcm_format_set_silence(format,
1615 runtime->oss.buffer + runtime->oss.buffer_used,
1617 err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes);
1619 mutex_unlock(&runtime->oss.params_lock);
1622 } else if (runtime->oss.period_ptr > 0) {
1624 printk(KERN_DEBUG "sync: period_ptr\n");
1626 size = runtime->oss.period_bytes - runtime->oss.period_ptr;
1627 snd_pcm_format_set_silence(format,
1628 runtime->oss.buffer,
1630 err = snd_pcm_oss_sync1(substream, size);
1632 mutex_unlock(&runtime->oss.params_lock);
1637 * The ALSA's period might be a bit large than OSS one.
1638 * Fill the remain portion of ALSA period with zeros.
1640 size = runtime->control->appl_ptr % runtime->period_size;
1642 size = runtime->period_size - size;
1643 if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) {
1644 size = (runtime->frame_bits * size) / 8;
1647 size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes;
1650 size1 /= runtime->sample_bits;
1651 snd_pcm_format_set_silence(runtime->format,
1652 runtime->oss.buffer,
1654 size1 /= runtime->channels; /* frames */
1655 fs = snd_enter_user();
1656 snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1);
1659 } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) {
1660 void __user *buffers[runtime->channels];
1661 memset(buffers, 0, runtime->channels * sizeof(void *));
1662 snd_pcm_lib_writev(substream, buffers, size);
1665 mutex_unlock(&runtime->oss.params_lock);
1667 * finish sync: drain the buffer
1670 saved_f_flags = substream->f_flags;
1671 substream->f_flags &= ~O_NONBLOCK;
1672 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL);
1673 substream->f_flags = saved_f_flags;
1676 runtime->oss.prepare = 1;
1679 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
1680 if (substream != NULL) {
1681 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
1683 runtime = substream->runtime;
1684 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
1687 runtime->oss.buffer_used = 0;
1688 runtime->oss.prepare = 1;
1693 static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
1697 for (idx = 1; idx >= 0; --idx) {
1698 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1699 struct snd_pcm_runtime *runtime;
1700 if (substream == NULL)
1702 runtime = substream->runtime;
1705 else if (rate > 192000)
1707 if (runtime->oss.rate != rate) {
1708 runtime->oss.params = 1;
1709 runtime->oss.rate = rate;
1712 return snd_pcm_oss_get_rate(pcm_oss_file);
1715 static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file)
1717 struct snd_pcm_substream *substream;
1720 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1722 return substream->runtime->oss.rate;
1725 static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels)
1732 for (idx = 1; idx >= 0; --idx) {
1733 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1734 struct snd_pcm_runtime *runtime;
1735 if (substream == NULL)
1737 runtime = substream->runtime;
1738 if (runtime->oss.channels != channels) {
1739 runtime->oss.params = 1;
1740 runtime->oss.channels = channels;
1743 return snd_pcm_oss_get_channels(pcm_oss_file);
1746 static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file)
1748 struct snd_pcm_substream *substream;
1751 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1753 return substream->runtime->oss.channels;
1756 static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file)
1758 struct snd_pcm_substream *substream;
1761 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1763 return substream->runtime->oss.period_bytes;
1766 static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
1768 struct snd_pcm_substream *substream;
1771 struct snd_pcm_hw_params *params;
1772 unsigned int formats = 0;
1773 struct snd_mask format_mask;
1776 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1778 if (atomic_read(&substream->mmap_count))
1781 direct = substream->oss.setup.direct;
1783 return AFMT_MU_LAW | AFMT_U8 |
1784 AFMT_S16_LE | AFMT_S16_BE |
1785 AFMT_S8 | AFMT_U16_LE |
1787 AFMT_S32_LE | AFMT_S32_BE |
1788 AFMT_S24_LE | AFMT_S24_BE |
1790 params = kmalloc(sizeof(*params), GFP_KERNEL);
1793 _snd_pcm_hw_params_any(params);
1794 err = snd_pcm_hw_refine(substream, params);
1795 format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
1799 for (fmt = 0; fmt < 32; ++fmt) {
1800 if (snd_mask_test(&format_mask, fmt)) {
1801 int f = snd_pcm_oss_format_to(fmt);
1809 static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format)
1813 if (format != AFMT_QUERY) {
1814 formats = snd_pcm_oss_get_formats(pcm_oss_file);
1817 if (!(formats & format))
1819 for (idx = 1; idx >= 0; --idx) {
1820 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1821 struct snd_pcm_runtime *runtime;
1822 if (substream == NULL)
1824 runtime = substream->runtime;
1825 if (runtime->oss.format != format) {
1826 runtime->oss.params = 1;
1827 runtime->oss.format = format;
1831 return snd_pcm_oss_get_format(pcm_oss_file);
1834 static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file)
1836 struct snd_pcm_substream *substream;
1839 if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
1841 return substream->runtime->oss.format;
1844 static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide)
1846 struct snd_pcm_runtime *runtime;
1848 if (substream == NULL)
1850 runtime = substream->runtime;
1851 if (subdivide == 0) {
1852 subdivide = runtime->oss.subdivision;
1857 if (runtime->oss.subdivision || runtime->oss.fragshift)
1859 if (subdivide != 1 && subdivide != 2 && subdivide != 4 &&
1860 subdivide != 8 && subdivide != 16)
1862 runtime->oss.subdivision = subdivide;
1863 runtime->oss.params = 1;
1867 static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide)
1869 int err = -EINVAL, idx;
1871 for (idx = 1; idx >= 0; --idx) {
1872 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1873 if (substream == NULL)
1875 if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0)
1881 static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val)
1883 struct snd_pcm_runtime *runtime;
1885 if (substream == NULL)
1887 runtime = substream->runtime;
1888 if (runtime->oss.subdivision || runtime->oss.fragshift)
1890 runtime->oss.fragshift = val & 0xffff;
1891 runtime->oss.maxfrags = (val >> 16) & 0xffff;
1892 if (runtime->oss.fragshift < 4) /* < 16 */
1893 runtime->oss.fragshift = 4;
1894 if (runtime->oss.maxfrags < 2)
1895 runtime->oss.maxfrags = 2;
1896 runtime->oss.params = 1;
1900 static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val)
1902 int err = -EINVAL, idx;
1904 for (idx = 1; idx >= 0; --idx) {
1905 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1906 if (substream == NULL)
1908 if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0)
1914 static int snd_pcm_oss_nonblock(struct file * file)
1916 spin_lock(&file->f_lock);
1917 file->f_flags |= O_NONBLOCK;
1918 spin_unlock(&file->f_lock);
1922 static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res)
1925 if (substream == NULL) {
1926 res &= ~DSP_CAP_DUPLEX;
1929 #ifdef DSP_CAP_MULTI
1930 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1931 if (substream->pstr->substream_count > 1)
1932 res |= DSP_CAP_MULTI;
1934 /* DSP_CAP_REALTIME is set all times: */
1935 /* all ALSA drivers can return actual pointer in ring buffer */
1936 #if defined(DSP_CAP_REALTIME) && 0
1938 struct snd_pcm_runtime *runtime = substream->runtime;
1939 if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH))
1940 res &= ~DSP_CAP_REALTIME;
1946 static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file)
1950 result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME;
1951 for (idx = 0; idx < 2; idx++) {
1952 struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
1953 result = snd_pcm_oss_get_caps1(substream, result);
1955 result |= 0x0001; /* revision - same as SB AWE 64 */
1959 static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream,
1960 snd_pcm_uframes_t hw_ptr)
1962 struct snd_pcm_runtime *runtime = substream->runtime;
1963 snd_pcm_uframes_t appl_ptr;
1964 appl_ptr = hw_ptr + runtime->buffer_size;
1965 appl_ptr %= runtime->boundary;
1966 runtime->control->appl_ptr = appl_ptr;
1969 static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger)
1971 struct snd_pcm_runtime *runtime;
1972 struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
1976 printk(KERN_DEBUG "pcm_oss: trigger = 0x%x\n", trigger);
1979 psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
1980 csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
1983 if ((err = snd_pcm_oss_make_ready(psubstream)) < 0)
1987 if ((err = snd_pcm_oss_make_ready(csubstream)) < 0)
1991 runtime = psubstream->runtime;
1992 if (trigger & PCM_ENABLE_OUTPUT) {
1993 if (runtime->oss.trigger)
1995 if (atomic_read(&psubstream->mmap_count))
1996 snd_pcm_oss_simulate_fill(psubstream,
1997 get_hw_ptr_period(runtime));
1998 runtime->oss.trigger = 1;
1999 runtime->start_threshold = 1;
2000 cmd = SNDRV_PCM_IOCTL_START;
2002 if (!runtime->oss.trigger)
2004 runtime->oss.trigger = 0;
2005 runtime->start_threshold = runtime->boundary;
2006 cmd = SNDRV_PCM_IOCTL_DROP;
2007 runtime->oss.prepare = 1;
2009 err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL);
2015 runtime = csubstream->runtime;
2016 if (trigger & PCM_ENABLE_INPUT) {
2017 if (runtime->oss.trigger)
2019 runtime->oss.trigger = 1;
2020 runtime->start_threshold = 1;
2021 cmd = SNDRV_PCM_IOCTL_START;
2023 if (!runtime->oss.trigger)
2025 runtime->oss.trigger = 0;
2026 runtime->start_threshold = runtime->boundary;
2027 cmd = SNDRV_PCM_IOCTL_DROP;
2028 runtime->oss.prepare = 1;
2030 err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL);
2038 static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file)
2040 struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
2043 psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2044 csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2045 if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger)
2046 result |= PCM_ENABLE_OUTPUT;
2047 if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger)
2048 result |= PCM_ENABLE_INPUT;
2052 static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file)
2054 struct snd_pcm_substream *substream;
2055 struct snd_pcm_runtime *runtime;
2056 snd_pcm_sframes_t delay;
2059 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2060 if (substream == NULL)
2062 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
2064 runtime = substream->runtime;
2065 if (runtime->oss.params || runtime->oss.prepare)
2067 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay);
2069 delay = 0; /* hack for broken OSS applications */
2072 return snd_pcm_oss_bytes(substream, delay);
2075 static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info)
2077 struct snd_pcm_substream *substream;
2078 struct snd_pcm_runtime *runtime;
2079 snd_pcm_sframes_t delay;
2081 struct count_info info;
2086 substream = pcm_oss_file->streams[stream];
2087 if (substream == NULL)
2089 if ((err = snd_pcm_oss_make_ready(substream)) < 0)
2091 runtime = substream->runtime;
2092 if (runtime->oss.params || runtime->oss.prepare) {
2093 memset(&info, 0, sizeof(info));
2094 if (copy_to_user(_info, &info, sizeof(info)))
2098 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
2099 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay);
2100 if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) {
2105 fixup = runtime->oss.buffer_used;
2108 err = snd_pcm_oss_capture_position_fixup(substream, &delay);
2109 fixup = -runtime->oss.buffer_used;
2113 info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size);
2114 if (atomic_read(&substream->mmap_count)) {
2115 snd_pcm_sframes_t n;
2116 delay = get_hw_ptr_period(runtime);
2117 n = delay - runtime->oss.prev_hw_ptr_period;
2119 n += runtime->boundary;
2120 info.blocks = n / runtime->period_size;
2121 runtime->oss.prev_hw_ptr_period = delay;
2122 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
2123 snd_pcm_oss_simulate_fill(substream, delay);
2124 info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX;
2126 delay = snd_pcm_oss_bytes(substream, delay);
2127 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
2128 if (substream->oss.setup.buggyptr)
2129 info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes;
2131 info.blocks = (delay + fixup) / runtime->oss.period_bytes;
2132 info.bytes = (runtime->oss.bytes - delay) & INT_MAX;
2135 info.blocks = delay / runtime->oss.period_bytes;
2136 info.bytes = (runtime->oss.bytes + delay) & INT_MAX;
2139 if (copy_to_user(_info, &info, sizeof(info)))
2144 static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info)
2146 struct snd_pcm_substream *substream;
2147 struct snd_pcm_runtime *runtime;
2148 snd_pcm_sframes_t avail;
2150 struct audio_buf_info info;
2155 substream = pcm_oss_file->streams[stream];
2156 if (substream == NULL)
2158 runtime = substream->runtime;
2160 if (runtime->oss.params &&
2161 (err = snd_pcm_oss_change_params(substream)) < 0)
2164 info.fragsize = runtime->oss.period_bytes;
2165 info.fragstotal = runtime->periods;
2166 if (runtime->oss.prepare) {
2167 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
2168 info.bytes = runtime->oss.period_bytes * runtime->oss.periods;
2169 info.fragments = runtime->oss.periods;
2175 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
2176 err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail);
2177 if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) {
2178 avail = runtime->buffer_size;
2182 avail = runtime->buffer_size - avail;
2183 fixup = -runtime->oss.buffer_used;
2186 err = snd_pcm_oss_capture_position_fixup(substream, &avail);
2187 fixup = runtime->oss.buffer_used;
2191 info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup;
2192 info.fragments = info.bytes / runtime->oss.period_bytes;
2196 printk(KERN_DEBUG "pcm_oss: space: bytes = %i, fragments = %i, "
2197 "fragstotal = %i, fragsize = %i\n",
2198 info.bytes, info.fragments, info.fragstotal, info.fragsize);
2200 if (copy_to_user(_info, &info, sizeof(info)))
2205 static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info)
2207 // it won't be probably implemented
2208 // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n");
2212 static const char *strip_task_path(const char *path)
2214 const char *ptr, *ptrl = NULL;
2215 for (ptr = path; *ptr; ptr++) {
2222 static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream,
2223 const char *task_name,
2224 struct snd_pcm_oss_setup *rsetup)
2226 struct snd_pcm_oss_setup *setup;
2228 mutex_lock(&pcm->streams[stream].oss.setup_mutex);
2230 for (setup = pcm->streams[stream].oss.setup_list; setup;
2231 setup = setup->next) {
2232 if (!strcmp(setup->task_name, task_name))
2235 } while ((task_name = strip_task_path(task_name)) != NULL);
2239 mutex_unlock(&pcm->streams[stream].oss.setup_mutex);
2242 static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream)
2244 struct snd_pcm_runtime *runtime;
2245 runtime = substream->runtime;
2246 vfree(runtime->oss.buffer);
2247 runtime->oss.buffer = NULL;
2248 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
2249 snd_pcm_oss_plugin_clear(substream);
2251 substream->oss.oss = 0;
2254 static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream,
2255 struct snd_pcm_oss_setup *setup,
2258 struct snd_pcm_runtime *runtime;
2260 substream->oss.oss = 1;
2261 substream->oss.setup = *setup;
2262 if (setup->nonblock)
2263 substream->f_flags |= O_NONBLOCK;
2264 else if (setup->block)
2265 substream->f_flags &= ~O_NONBLOCK;
2266 runtime = substream->runtime;
2267 runtime->oss.params = 1;
2268 runtime->oss.trigger = 1;
2269 runtime->oss.rate = 8000;
2270 mutex_init(&runtime->oss.params_lock);
2271 switch (SNDRV_MINOR_OSS_DEVICE(minor)) {
2272 case SNDRV_MINOR_OSS_PCM_8:
2273 runtime->oss.format = AFMT_U8;
2275 case SNDRV_MINOR_OSS_PCM_16:
2276 runtime->oss.format = AFMT_S16_LE;
2279 runtime->oss.format = AFMT_MU_LAW;
2281 runtime->oss.channels = 1;
2282 runtime->oss.fragshift = 0;
2283 runtime->oss.maxfrags = 0;
2284 runtime->oss.subdivision = 0;
2285 substream->pcm_release = snd_pcm_oss_release_substream;
2288 static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file)
2293 for (cidx = 0; cidx < 2; ++cidx) {
2294 struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx];
2296 snd_pcm_release_substream(substream);
2298 kfree(pcm_oss_file);
2302 static int snd_pcm_oss_open_file(struct file *file,
2303 struct snd_pcm *pcm,
2304 struct snd_pcm_oss_file **rpcm_oss_file,
2306 struct snd_pcm_oss_setup *setup)
2309 struct snd_pcm_oss_file *pcm_oss_file;
2310 struct snd_pcm_substream *substream;
2311 fmode_t f_mode = file->f_mode;
2314 *rpcm_oss_file = NULL;
2316 pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL);
2317 if (pcm_oss_file == NULL)
2320 if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) &&
2321 (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX))
2322 f_mode = FMODE_WRITE;
2324 file->f_flags &= ~O_APPEND;
2325 for (idx = 0; idx < 2; idx++) {
2326 if (setup[idx].disable)
2328 if (! pcm->streams[idx].substream_count)
2329 continue; /* no matching substream */
2330 if (idx == SNDRV_PCM_STREAM_PLAYBACK) {
2331 if (! (f_mode & FMODE_WRITE))
2334 if (! (f_mode & FMODE_READ))
2337 err = snd_pcm_open_substream(pcm, idx, file, &substream);
2339 snd_pcm_oss_release_file(pcm_oss_file);
2343 pcm_oss_file->streams[idx] = substream;
2344 substream->file = pcm_oss_file;
2345 snd_pcm_oss_init_substream(substream, &setup[idx], minor);
2348 if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) {
2349 snd_pcm_oss_release_file(pcm_oss_file);
2353 file->private_data = pcm_oss_file;
2355 *rpcm_oss_file = pcm_oss_file;
2360 static int snd_task_name(struct task_struct *task, char *name, size_t size)
2364 if (snd_BUG_ON(!task || !name || size < 2))
2366 for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++)
2367 name[idx] = task->comm[idx];
2372 static int snd_pcm_oss_open(struct inode *inode, struct file *file)
2376 struct snd_pcm *pcm;
2377 struct snd_pcm_oss_file *pcm_oss_file;
2378 struct snd_pcm_oss_setup setup[2];
2382 pcm = snd_lookup_oss_minor_data(iminor(inode),
2383 SNDRV_OSS_DEVICE_TYPE_PCM);
2388 err = snd_card_file_add(pcm->card, file);
2391 if (!try_module_get(pcm->card->module)) {
2395 if (snd_task_name(current, task_name, sizeof(task_name)) < 0) {
2399 memset(setup, 0, sizeof(setup));
2400 if (file->f_mode & FMODE_WRITE)
2401 snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK,
2402 task_name, &setup[0]);
2403 if (file->f_mode & FMODE_READ)
2404 snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE,
2405 task_name, &setup[1]);
2407 nonblock = !!(file->f_flags & O_NONBLOCK);
2409 nonblock = nonblock_open;
2411 init_waitqueue_entry(&wait, current);
2412 add_wait_queue(&pcm->open_wait, &wait);
2413 mutex_lock(&pcm->open_mutex);
2415 err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file,
2416 iminor(inode), setup);
2419 if (err == -EAGAIN) {
2426 set_current_state(TASK_INTERRUPTIBLE);
2427 mutex_unlock(&pcm->open_mutex);
2429 mutex_lock(&pcm->open_mutex);
2430 if (signal_pending(current)) {
2435 remove_wait_queue(&pcm->open_wait, &wait);
2436 mutex_unlock(&pcm->open_mutex);
2442 module_put(pcm->card->module);
2444 snd_card_file_remove(pcm->card, file);
2449 static int snd_pcm_oss_release(struct inode *inode, struct file *file)
2451 struct snd_pcm *pcm;
2452 struct snd_pcm_substream *substream;
2453 struct snd_pcm_oss_file *pcm_oss_file;
2455 pcm_oss_file = file->private_data;
2456 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2457 if (substream == NULL)
2458 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2459 if (snd_BUG_ON(!substream))
2461 pcm = substream->pcm;
2462 if (!pcm->card->shutdown)
2463 snd_pcm_oss_sync(pcm_oss_file);
2464 mutex_lock(&pcm->open_mutex);
2465 snd_pcm_oss_release_file(pcm_oss_file);
2466 mutex_unlock(&pcm->open_mutex);
2467 wake_up(&pcm->open_wait);
2468 module_put(pcm->card->module);
2469 snd_card_file_remove(pcm->card, file);
2473 static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2475 struct snd_pcm_oss_file *pcm_oss_file;
2476 int __user *p = (int __user *)arg;
2479 pcm_oss_file = file->private_data;
2480 if (cmd == OSS_GETVERSION)
2481 return put_user(SNDRV_OSS_VERSION, p);
2482 if (cmd == OSS_ALSAEMULVER)
2483 return put_user(1, p);
2484 #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE))
2485 if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */
2486 struct snd_pcm_substream *substream;
2488 for (idx = 0; idx < 2; ++idx) {
2489 substream = pcm_oss_file->streams[idx];
2490 if (substream != NULL)
2493 if (snd_BUG_ON(idx >= 2))
2495 return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg);
2498 if (((cmd >> 8) & 0xff) != 'P')
2501 printk(KERN_DEBUG "pcm_oss: ioctl = 0x%x\n", cmd);
2504 case SNDCTL_DSP_RESET:
2505 return snd_pcm_oss_reset(pcm_oss_file);
2506 case SNDCTL_DSP_SYNC:
2507 return snd_pcm_oss_sync(pcm_oss_file);
2508 case SNDCTL_DSP_SPEED:
2509 if (get_user(res, p))
2511 if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0)
2513 return put_user(res, p);
2514 case SOUND_PCM_READ_RATE:
2515 res = snd_pcm_oss_get_rate(pcm_oss_file);
2518 return put_user(res, p);
2519 case SNDCTL_DSP_STEREO:
2520 if (get_user(res, p))
2522 res = res > 0 ? 2 : 1;
2523 if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0)
2525 return put_user(--res, p);
2526 case SNDCTL_DSP_GETBLKSIZE:
2527 res = snd_pcm_oss_get_block_size(pcm_oss_file);
2530 return put_user(res, p);
2531 case SNDCTL_DSP_SETFMT:
2532 if (get_user(res, p))
2534 res = snd_pcm_oss_set_format(pcm_oss_file, res);
2537 return put_user(res, p);
2538 case SOUND_PCM_READ_BITS:
2539 res = snd_pcm_oss_get_format(pcm_oss_file);
2542 return put_user(res, p);
2543 case SNDCTL_DSP_CHANNELS:
2544 if (get_user(res, p))
2546 res = snd_pcm_oss_set_channels(pcm_oss_file, res);
2549 return put_user(res, p);
2550 case SOUND_PCM_READ_CHANNELS:
2551 res = snd_pcm_oss_get_channels(pcm_oss_file);
2554 return put_user(res, p);
2555 case SOUND_PCM_WRITE_FILTER:
2556 case SOUND_PCM_READ_FILTER:
2558 case SNDCTL_DSP_POST:
2559 return snd_pcm_oss_post(pcm_oss_file);
2560 case SNDCTL_DSP_SUBDIVIDE:
2561 if (get_user(res, p))
2563 res = snd_pcm_oss_set_subdivide(pcm_oss_file, res);
2566 return put_user(res, p);
2567 case SNDCTL_DSP_SETFRAGMENT:
2568 if (get_user(res, p))
2570 return snd_pcm_oss_set_fragment(pcm_oss_file, res);
2571 case SNDCTL_DSP_GETFMTS:
2572 res = snd_pcm_oss_get_formats(pcm_oss_file);
2575 return put_user(res, p);
2576 case SNDCTL_DSP_GETOSPACE:
2577 case SNDCTL_DSP_GETISPACE:
2578 return snd_pcm_oss_get_space(pcm_oss_file,
2579 cmd == SNDCTL_DSP_GETISPACE ?
2580 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
2581 (struct audio_buf_info __user *) arg);
2582 case SNDCTL_DSP_NONBLOCK:
2583 return snd_pcm_oss_nonblock(file);
2584 case SNDCTL_DSP_GETCAPS:
2585 res = snd_pcm_oss_get_caps(pcm_oss_file);
2588 return put_user(res, p);
2589 case SNDCTL_DSP_GETTRIGGER:
2590 res = snd_pcm_oss_get_trigger(pcm_oss_file);
2593 return put_user(res, p);
2594 case SNDCTL_DSP_SETTRIGGER:
2595 if (get_user(res, p))
2597 return snd_pcm_oss_set_trigger(pcm_oss_file, res);
2598 case SNDCTL_DSP_GETIPTR:
2599 case SNDCTL_DSP_GETOPTR:
2600 return snd_pcm_oss_get_ptr(pcm_oss_file,
2601 cmd == SNDCTL_DSP_GETIPTR ?
2602 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
2603 (struct count_info __user *) arg);
2604 case SNDCTL_DSP_MAPINBUF:
2605 case SNDCTL_DSP_MAPOUTBUF:
2606 return snd_pcm_oss_get_mapbuf(pcm_oss_file,
2607 cmd == SNDCTL_DSP_MAPINBUF ?
2608 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK,
2609 (struct buffmem_desc __user *) arg);
2610 case SNDCTL_DSP_SETSYNCRO:
2611 /* stop DMA now.. */
2613 case SNDCTL_DSP_SETDUPLEX:
2614 if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX)
2617 case SNDCTL_DSP_GETODELAY:
2618 res = snd_pcm_oss_get_odelay(pcm_oss_file);
2620 /* it's for sure, some broken apps don't check for error codes */
2624 return put_user(res, p);
2625 case SNDCTL_DSP_PROFILE:
2626 return 0; /* silently ignore */
2628 snd_printd("pcm_oss: unknown command = 0x%x\n", cmd);
2633 #ifdef CONFIG_COMPAT
2634 /* all compatible */
2635 #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl
2637 #define snd_pcm_oss_ioctl_compat NULL
2640 static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
2642 struct snd_pcm_oss_file *pcm_oss_file;
2643 struct snd_pcm_substream *substream;
2645 pcm_oss_file = file->private_data;
2646 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2647 if (substream == NULL)
2649 substream->f_flags = file->f_flags & O_NONBLOCK;
2651 return snd_pcm_oss_read1(substream, buf, count);
2654 ssize_t res = snd_pcm_oss_read1(substream, buf, count);
2655 printk(KERN_DEBUG "pcm_oss: read %li bytes "
2656 "(returned %li bytes)\n", (long)count, (long)res);
2662 static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset)
2664 struct snd_pcm_oss_file *pcm_oss_file;
2665 struct snd_pcm_substream *substream;
2668 pcm_oss_file = file->private_data;
2669 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2670 if (substream == NULL)
2672 substream->f_flags = file->f_flags & O_NONBLOCK;
2673 result = snd_pcm_oss_write1(substream, buf, count);
2675 printk(KERN_DEBUG "pcm_oss: write %li bytes (wrote %li bytes)\n",
2676 (long)count, (long)result);
2681 static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream)
2683 struct snd_pcm_runtime *runtime = substream->runtime;
2684 if (atomic_read(&substream->mmap_count))
2685 return runtime->oss.prev_hw_ptr_period !=
2686 get_hw_ptr_period(runtime);
2688 return snd_pcm_playback_avail(runtime) >=
2689 runtime->oss.period_frames;
2692 static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream)
2694 struct snd_pcm_runtime *runtime = substream->runtime;
2695 if (atomic_read(&substream->mmap_count))
2696 return runtime->oss.prev_hw_ptr_period !=
2697 get_hw_ptr_period(runtime);
2699 return snd_pcm_capture_avail(runtime) >=
2700 runtime->oss.period_frames;
2703 static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
2705 struct snd_pcm_oss_file *pcm_oss_file;
2707 struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
2709 pcm_oss_file = file->private_data;
2711 psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2712 csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2715 if (psubstream != NULL) {
2716 struct snd_pcm_runtime *runtime = psubstream->runtime;
2717 poll_wait(file, &runtime->sleep, wait);
2718 snd_pcm_stream_lock_irq(psubstream);
2719 if (runtime->status->state != SNDRV_PCM_STATE_DRAINING &&
2720 (runtime->status->state != SNDRV_PCM_STATE_RUNNING ||
2721 snd_pcm_oss_playback_ready(psubstream)))
2722 mask |= POLLOUT | POLLWRNORM;
2723 snd_pcm_stream_unlock_irq(psubstream);
2725 if (csubstream != NULL) {
2726 struct snd_pcm_runtime *runtime = csubstream->runtime;
2727 snd_pcm_state_t ostate;
2728 poll_wait(file, &runtime->sleep, wait);
2729 snd_pcm_stream_lock_irq(csubstream);
2730 if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING ||
2731 snd_pcm_oss_capture_ready(csubstream))
2732 mask |= POLLIN | POLLRDNORM;
2733 snd_pcm_stream_unlock_irq(csubstream);
2734 if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) {
2735 struct snd_pcm_oss_file ofile;
2736 memset(&ofile, 0, sizeof(ofile));
2737 ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2738 runtime->oss.trigger = 0;
2739 snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT);
2746 static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area)
2748 struct snd_pcm_oss_file *pcm_oss_file;
2749 struct snd_pcm_substream *substream = NULL;
2750 struct snd_pcm_runtime *runtime;
2754 printk(KERN_DEBUG "pcm_oss: mmap begin\n");
2756 pcm_oss_file = file->private_data;
2757 switch ((area->vm_flags & (VM_READ | VM_WRITE))) {
2758 case VM_READ | VM_WRITE:
2759 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2764 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
2767 substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
2772 /* set VM_READ access as well to fix memset() routines that do
2773 reads before writes (to improve performance) */
2774 area->vm_flags |= VM_READ;
2775 if (substream == NULL)
2777 runtime = substream->runtime;
2778 if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID))
2780 if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED)
2781 runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED;
2785 if (runtime->oss.params) {
2786 if ((err = snd_pcm_oss_change_params(substream)) < 0)
2789 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
2790 if (runtime->oss.plugin_first != NULL)
2794 if (area->vm_pgoff != 0)
2797 err = snd_pcm_mmap_data(substream, file, area);
2800 runtime->oss.mmap_bytes = area->vm_end - area->vm_start;
2801 runtime->silence_threshold = 0;
2802 runtime->silence_size = 0;
2804 printk(KERN_DEBUG "pcm_oss: mmap ok, bytes = 0x%x\n",
2805 runtime->oss.mmap_bytes);
2807 /* In mmap mode we never stop */
2808 runtime->stop_threshold = runtime->boundary;
2813 #ifdef CONFIG_SND_VERBOSE_PROCFS
2818 static void snd_pcm_oss_proc_read(struct snd_info_entry *entry,
2819 struct snd_info_buffer *buffer)
2821 struct snd_pcm_str *pstr = entry->private_data;
2822 struct snd_pcm_oss_setup *setup = pstr->oss.setup_list;
2823 mutex_lock(&pstr->oss.setup_mutex);
2825 snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n",
2829 setup->disable ? " disable" : "",
2830 setup->direct ? " direct" : "",
2831 setup->block ? " block" : "",
2832 setup->nonblock ? " non-block" : "",
2833 setup->partialfrag ? " partial-frag" : "",
2834 setup->nosilence ? " no-silence" : "");
2835 setup = setup->next;
2837 mutex_unlock(&pstr->oss.setup_mutex);
2840 static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr)
2842 struct snd_pcm_oss_setup *setup, *setupn;
2844 for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL;
2845 setup; setup = setupn) {
2846 setupn = setup->next;
2847 kfree(setup->task_name);
2850 pstr->oss.setup_list = NULL;
2853 static void snd_pcm_oss_proc_write(struct snd_info_entry *entry,
2854 struct snd_info_buffer *buffer)
2856 struct snd_pcm_str *pstr = entry->private_data;
2857 char line[128], str[32], task_name[32];
2860 struct snd_pcm_oss_setup *setup, *setup1, template;
2862 while (!snd_info_get_line(buffer, line, sizeof(line))) {
2863 mutex_lock(&pstr->oss.setup_mutex);
2864 memset(&template, 0, sizeof(template));
2865 ptr = snd_info_get_str(task_name, line, sizeof(task_name));
2866 if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) {
2867 snd_pcm_oss_proc_free_setup_list(pstr);
2868 mutex_unlock(&pstr->oss.setup_mutex);
2871 for (setup = pstr->oss.setup_list; setup; setup = setup->next) {
2872 if (!strcmp(setup->task_name, task_name)) {
2877 ptr = snd_info_get_str(str, ptr, sizeof(str));
2878 template.periods = simple_strtoul(str, NULL, 10);
2879 ptr = snd_info_get_str(str, ptr, sizeof(str));
2880 template.period_size = simple_strtoul(str, NULL, 10);
2881 for (idx1 = 31; idx1 >= 0; idx1--)
2882 if (template.period_size & (1 << idx1))
2884 for (idx1--; idx1 >= 0; idx1--)
2885 template.period_size &= ~(1 << idx1);
2887 ptr = snd_info_get_str(str, ptr, sizeof(str));
2888 if (!strcmp(str, "disable")) {
2889 template.disable = 1;
2890 } else if (!strcmp(str, "direct")) {
2891 template.direct = 1;
2892 } else if (!strcmp(str, "block")) {
2894 } else if (!strcmp(str, "non-block")) {
2895 template.nonblock = 1;
2896 } else if (!strcmp(str, "partial-frag")) {
2897 template.partialfrag = 1;
2898 } else if (!strcmp(str, "no-silence")) {
2899 template.nosilence = 1;
2900 } else if (!strcmp(str, "buggy-ptr")) {
2901 template.buggyptr = 1;
2904 if (setup == NULL) {
2905 setup = kmalloc(sizeof(*setup), GFP_KERNEL);
2907 buffer->error = -ENOMEM;
2908 mutex_unlock(&pstr->oss.setup_mutex);
2911 if (pstr->oss.setup_list == NULL)
2912 pstr->oss.setup_list = setup;
2914 for (setup1 = pstr->oss.setup_list;
2915 setup1->next; setup1 = setup1->next);
2916 setup1->next = setup;
2918 template.task_name = kstrdup(task_name, GFP_KERNEL);
2919 if (! template.task_name) {
2921 buffer->error = -ENOMEM;
2922 mutex_unlock(&pstr->oss.setup_mutex);
2927 mutex_unlock(&pstr->oss.setup_mutex);
2931 static void snd_pcm_oss_proc_init(struct snd_pcm *pcm)
2934 for (stream = 0; stream < 2; ++stream) {
2935 struct snd_info_entry *entry;
2936 struct snd_pcm_str *pstr = &pcm->streams[stream];
2937 if (pstr->substream_count == 0)
2939 if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) {
2940 entry->content = SNDRV_INFO_CONTENT_TEXT;
2941 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
2942 entry->c.text.read = snd_pcm_oss_proc_read;
2943 entry->c.text.write = snd_pcm_oss_proc_write;
2944 entry->private_data = pstr;
2945 if (snd_info_register(entry) < 0) {
2946 snd_info_free_entry(entry);
2950 pstr->oss.proc_entry = entry;
2954 static void snd_pcm_oss_proc_done(struct snd_pcm *pcm)
2957 for (stream = 0; stream < 2; ++stream) {
2958 struct snd_pcm_str *pstr = &pcm->streams[stream];
2959 snd_info_free_entry(pstr->oss.proc_entry);
2960 pstr->oss.proc_entry = NULL;
2961 snd_pcm_oss_proc_free_setup_list(pstr);
2964 #else /* !CONFIG_SND_VERBOSE_PROCFS */
2965 #define snd_pcm_oss_proc_init(pcm)
2966 #define snd_pcm_oss_proc_done(pcm)
2967 #endif /* CONFIG_SND_VERBOSE_PROCFS */
2973 static const struct file_operations snd_pcm_oss_f_reg =
2975 .owner = THIS_MODULE,
2976 .read = snd_pcm_oss_read,
2977 .write = snd_pcm_oss_write,
2978 .open = snd_pcm_oss_open,
2979 .release = snd_pcm_oss_release,
2980 .poll = snd_pcm_oss_poll,
2981 .unlocked_ioctl = snd_pcm_oss_ioctl,
2982 .compat_ioctl = snd_pcm_oss_ioctl_compat,
2983 .mmap = snd_pcm_oss_mmap,
2986 static void register_oss_dsp(struct snd_pcm *pcm, int index)
2989 sprintf(name, "dsp%i%i", pcm->card->number, pcm->device);
2990 if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
2991 pcm->card, index, &snd_pcm_oss_f_reg,
2993 snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n",
2994 pcm->card->number, pcm->device);
2998 static int snd_pcm_oss_register_minor(struct snd_pcm *pcm)
3001 if (dsp_map[pcm->card->number] == (int)pcm->device) {
3004 register_oss_dsp(pcm, 0);
3005 duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 &&
3006 pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count &&
3007 !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX));
3008 sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : "");
3009 #ifdef SNDRV_OSS_INFO_DEV_AUDIO
3010 snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO,
3015 pcm->oss.reg_mask |= 1;
3017 if (adsp_map[pcm->card->number] == (int)pcm->device) {
3018 register_oss_dsp(pcm, 1);
3020 pcm->oss.reg_mask |= 2;
3024 snd_pcm_oss_proc_init(pcm);
3029 static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm)
3032 if (pcm->oss.reg_mask & 1) {
3033 pcm->oss.reg_mask &= ~1;
3034 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
3037 if (pcm->oss.reg_mask & 2) {
3038 pcm->oss.reg_mask &= ~2;
3039 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM,
3042 if (dsp_map[pcm->card->number] == (int)pcm->device) {
3043 #ifdef SNDRV_OSS_INFO_DEV_AUDIO
3044 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number);
3052 static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm)
3054 snd_pcm_oss_disconnect_minor(pcm);
3055 snd_pcm_oss_proc_done(pcm);
3059 static struct snd_pcm_notify snd_pcm_oss_notify =
3061 .n_register = snd_pcm_oss_register_minor,
3062 .n_disconnect = snd_pcm_oss_disconnect_minor,
3063 .n_unregister = snd_pcm_oss_unregister_minor,
3066 static int __init alsa_pcm_oss_init(void)
3071 /* check device map table */
3072 for (i = 0; i < SNDRV_CARDS; i++) {
3073 if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) {
3074 snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n",
3078 if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) {
3079 snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n",
3084 if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0)
3089 static void __exit alsa_pcm_oss_exit(void)
3091 snd_pcm_notify(&snd_pcm_oss_notify, 1);
3094 module_init(alsa_pcm_oss_init)
3095 module_exit(alsa_pcm_oss_exit)