Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Digital Audio (PCM) abstract layer / OSS compatible | |
3 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> | |
4 | * | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #if 0 | |
23 | #define PLUGIN_DEBUG | |
24 | #endif | |
25 | #if 0 | |
26 | #define OSS_DEBUG | |
27 | #endif | |
28 | ||
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> | |
543537bd | 36 | #include <linux/string.h> |
1da177e4 LT |
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> | |
45 | ||
46 | #define OSS_ALSAEMULVER _SIOR ('M', 249, int) | |
47 | ||
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; | |
51 | ||
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); | |
63 | ||
6ac77bc1 TI |
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); | |
1da177e4 LT |
68 | |
69 | static inline mm_segment_t snd_enter_user(void) | |
70 | { | |
71 | mm_segment_t fs = get_fs(); | |
72 | set_fs(get_ds()); | |
73 | return fs; | |
74 | } | |
75 | ||
76 | static inline void snd_leave_user(mm_segment_t fs) | |
77 | { | |
78 | set_fs(fs); | |
79 | } | |
80 | ||
21a3479a | 81 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
6ac77bc1 | 82 | static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream) |
1da177e4 | 83 | { |
6ac77bc1 TI |
84 | struct snd_pcm_runtime *runtime = substream->runtime; |
85 | struct snd_pcm_plugin *plugin, *next; | |
1da177e4 LT |
86 | |
87 | plugin = runtime->oss.plugin_first; | |
88 | while (plugin) { | |
89 | next = plugin->next; | |
90 | snd_pcm_plugin_free(plugin); | |
91 | plugin = next; | |
92 | } | |
93 | runtime->oss.plugin_first = runtime->oss.plugin_last = NULL; | |
94 | return 0; | |
95 | } | |
96 | ||
6ac77bc1 | 97 | static int snd_pcm_plugin_insert(struct snd_pcm_plugin *plugin) |
1da177e4 | 98 | { |
6ac77bc1 | 99 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
1da177e4 LT |
100 | plugin->next = runtime->oss.plugin_first; |
101 | plugin->prev = NULL; | |
102 | if (runtime->oss.plugin_first) { | |
103 | runtime->oss.plugin_first->prev = plugin; | |
104 | runtime->oss.plugin_first = plugin; | |
105 | } else { | |
106 | runtime->oss.plugin_last = | |
107 | runtime->oss.plugin_first = plugin; | |
108 | } | |
109 | return 0; | |
110 | } | |
111 | ||
6ac77bc1 | 112 | int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin) |
1da177e4 | 113 | { |
6ac77bc1 | 114 | struct snd_pcm_runtime *runtime = plugin->plug->runtime; |
1da177e4 LT |
115 | plugin->next = NULL; |
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; | |
120 | } else { | |
121 | runtime->oss.plugin_last = | |
122 | runtime->oss.plugin_first = plugin; | |
123 | } | |
124 | return 0; | |
125 | } | |
21a3479a | 126 | #endif /* CONFIG_SND_PCM_OSS_PLUGINS */ |
1da177e4 | 127 | |
6ac77bc1 | 128 | static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames) |
1da177e4 | 129 | { |
6ac77bc1 | 130 | struct snd_pcm_runtime *runtime = substream->runtime; |
af081613 | 131 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
bfc5bddb | 132 | long bytes = frames_to_bytes(runtime, frames); |
1da177e4 | 133 | if (buffer_size == runtime->oss.buffer_bytes) |
bfc5bddb | 134 | return bytes; |
cdc5c53f TI |
135 | #if BITS_PER_LONG >= 64 |
136 | return runtime->oss.buffer_bytes * bytes / buffer_size; | |
137 | #else | |
138 | { | |
139 | u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes; | |
140 | u32 rem; | |
141 | div64_32(&bsize, buffer_size, &rem); | |
142 | return (long)bsize; | |
143 | } | |
144 | #endif | |
1da177e4 LT |
145 | } |
146 | ||
6ac77bc1 | 147 | static long snd_pcm_alsa_frames(struct snd_pcm_substream *substream, long bytes) |
1da177e4 | 148 | { |
6ac77bc1 | 149 | struct snd_pcm_runtime *runtime = substream->runtime; |
af081613 | 150 | long buffer_size = snd_pcm_lib_buffer_bytes(substream); |
1da177e4 LT |
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); | |
154 | } | |
155 | ||
156 | static int snd_pcm_oss_format_from(int format) | |
157 | { | |
158 | switch (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; | |
170 | } | |
171 | } | |
172 | ||
173 | static int snd_pcm_oss_format_to(int format) | |
174 | { | |
175 | switch (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; | |
187 | } | |
188 | } | |
189 | ||
6ac77bc1 TI |
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) | |
1da177e4 LT |
193 | { |
194 | size_t s; | |
195 | size_t oss_buffer_size, oss_period_size, oss_periods; | |
196 | size_t min_period_size, max_period_size; | |
6ac77bc1 | 197 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
198 | size_t oss_frame_size; |
199 | ||
200 | oss_frame_size = snd_pcm_format_physical_width(params_format(oss_params)) * | |
201 | params_channels(oss_params) / 8; | |
202 | ||
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; | |
209 | } | |
210 | ||
211 | if (substream->oss.setup && | |
212 | substream->oss.setup->period_size > 16) | |
213 | oss_period_size = substream->oss.setup->period_size; | |
214 | else if (runtime->oss.fragshift) { | |
215 | oss_period_size = 1 << runtime->oss.fragshift; | |
216 | if (oss_period_size > oss_buffer_size / 2) | |
217 | oss_period_size = oss_buffer_size / 2; | |
218 | } else { | |
219 | int sd; | |
220 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; | |
221 | ||
222 | oss_period_size = oss_buffer_size; | |
223 | do { | |
224 | oss_period_size /= 2; | |
225 | } while (oss_period_size > bytes_per_sec); | |
226 | if (runtime->oss.subdivision == 0) { | |
227 | sd = 4; | |
228 | if (oss_period_size / sd > 4096) | |
229 | sd *= 2; | |
230 | if (oss_period_size / sd < 4096) | |
231 | sd = 1; | |
232 | } else | |
233 | sd = runtime->oss.subdivision; | |
234 | oss_period_size /= sd; | |
235 | if (oss_period_size < 16) | |
236 | oss_period_size = 16; | |
237 | } | |
238 | ||
239 | min_period_size = snd_pcm_plug_client_size(substream, | |
240 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); | |
241 | min_period_size *= oss_frame_size; | |
242 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); | |
243 | if (oss_period_size < min_period_size) | |
244 | oss_period_size = min_period_size; | |
245 | ||
246 | max_period_size = snd_pcm_plug_client_size(substream, | |
247 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); | |
248 | max_period_size *= oss_frame_size; | |
249 | max_period_size = 1 << ld2(max_period_size); | |
250 | if (oss_period_size > max_period_size) | |
251 | oss_period_size = max_period_size; | |
252 | ||
253 | oss_periods = oss_buffer_size / oss_period_size; | |
254 | ||
255 | if (substream->oss.setup) { | |
256 | if (substream->oss.setup->periods > 1) | |
257 | oss_periods = substream->oss.setup->periods; | |
258 | } | |
259 | ||
260 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); | |
261 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) | |
262 | s = runtime->oss.maxfrags; | |
263 | if (oss_periods > s) | |
264 | oss_periods = s; | |
265 | ||
266 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); | |
267 | if (s < 2) | |
268 | s = 2; | |
269 | if (oss_periods < s) | |
270 | oss_periods = s; | |
271 | ||
272 | while (oss_period_size * oss_periods > oss_buffer_size) | |
273 | oss_period_size /= 2; | |
274 | ||
275 | snd_assert(oss_period_size >= 16, return -EINVAL); | |
276 | runtime->oss.period_bytes = oss_period_size; | |
277 | runtime->oss.period_frames = 1; | |
278 | runtime->oss.periods = oss_periods; | |
279 | return 0; | |
280 | } | |
281 | ||
6ac77bc1 TI |
282 | static int choose_rate(struct snd_pcm_substream *substream, |
283 | struct snd_pcm_hw_params *params, unsigned int best_rate) | |
1da177e4 | 284 | { |
6ac77bc1 TI |
285 | struct snd_interval *it; |
286 | struct snd_pcm_hw_params *save; | |
1da177e4 LT |
287 | unsigned int rate, prev; |
288 | ||
289 | save = kmalloc(sizeof(*save), GFP_KERNEL); | |
290 | if (save == NULL) | |
291 | return -ENOMEM; | |
292 | *save = *params; | |
293 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); | |
294 | ||
295 | /* try multiples of the best rate */ | |
296 | rate = best_rate; | |
297 | for (;;) { | |
298 | if (it->max < rate || (it->max == rate && it->openmax)) | |
299 | break; | |
300 | if (it->min < rate || (it->min == rate && !it->openmin)) { | |
301 | int ret; | |
302 | ret = snd_pcm_hw_param_set(substream, params, | |
303 | SNDRV_PCM_HW_PARAM_RATE, | |
304 | rate, 0); | |
305 | if (ret == (int)rate) { | |
306 | kfree(save); | |
307 | return rate; | |
308 | } | |
309 | *params = *save; | |
310 | } | |
311 | prev = rate; | |
312 | rate += best_rate; | |
313 | if (rate <= prev) | |
314 | break; | |
315 | } | |
316 | ||
317 | /* not found, use the nearest rate */ | |
318 | kfree(save); | |
319 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); | |
320 | } | |
321 | ||
6ac77bc1 | 322 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
1da177e4 | 323 | { |
6ac77bc1 TI |
324 | struct snd_pcm_runtime *runtime = substream->runtime; |
325 | struct snd_pcm_hw_params *params, *sparams; | |
326 | struct snd_pcm_sw_params *sw_params; | |
1da177e4 LT |
327 | ssize_t oss_buffer_size, oss_period_size; |
328 | size_t oss_frame_size; | |
329 | int err; | |
330 | int direct; | |
331 | int format, sformat, n; | |
6ac77bc1 TI |
332 | struct snd_mask sformat_mask; |
333 | struct snd_mask mask; | |
1da177e4 LT |
334 | |
335 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); | |
336 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
337 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); | |
338 | if (!sw_params || !params || !sparams) { | |
339 | snd_printd("No memory\n"); | |
340 | err = -ENOMEM; | |
341 | goto failure; | |
342 | } | |
343 | ||
344 | if (atomic_read(&runtime->mmap_count)) { | |
345 | direct = 1; | |
346 | } else { | |
6ac77bc1 | 347 | struct snd_pcm_oss_setup *setup = substream->oss.setup; |
1da177e4 LT |
348 | direct = (setup != NULL && setup->direct); |
349 | } | |
350 | ||
351 | _snd_pcm_hw_params_any(sparams); | |
352 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); | |
353 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); | |
354 | snd_mask_none(&mask); | |
355 | if (atomic_read(&runtime->mmap_count)) | |
356 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); | |
357 | else { | |
358 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); | |
359 | if (!direct) | |
360 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); | |
361 | } | |
362 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); | |
363 | if (err < 0) { | |
364 | snd_printd("No usable accesses\n"); | |
365 | err = -EINVAL; | |
366 | goto failure; | |
367 | } | |
368 | choose_rate(substream, sparams, runtime->oss.rate); | |
369 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); | |
370 | ||
371 | format = snd_pcm_oss_format_from(runtime->oss.format); | |
372 | ||
373 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); | |
374 | if (direct) | |
375 | sformat = format; | |
376 | else | |
377 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); | |
378 | ||
379 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { | |
380 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { | |
381 | if (snd_mask_test(&sformat_mask, sformat) && | |
382 | snd_pcm_oss_format_to(sformat) >= 0) | |
383 | break; | |
384 | } | |
385 | if (sformat > SNDRV_PCM_FORMAT_LAST) { | |
386 | snd_printd("Cannot find a format!!!\n"); | |
387 | err = -EINVAL; | |
388 | goto failure; | |
389 | } | |
390 | } | |
391 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); | |
392 | snd_assert(err >= 0, goto failure); | |
393 | ||
394 | if (direct) { | |
395 | memcpy(params, sparams, sizeof(*params)); | |
396 | } else { | |
397 | _snd_pcm_hw_params_any(params); | |
398 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, | |
399 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); | |
400 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, | |
401 | snd_pcm_oss_format_from(runtime->oss.format), 0); | |
402 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, | |
403 | runtime->oss.channels, 0); | |
404 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, | |
405 | runtime->oss.rate, 0); | |
406 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", | |
407 | params_access(params), params_format(params), | |
408 | params_channels(params), params_rate(params)); | |
409 | } | |
410 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", | |
411 | params_access(sparams), params_format(sparams), | |
412 | params_channels(sparams), params_rate(sparams)); | |
413 | ||
414 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * | |
415 | params_channels(params) / 8; | |
416 | ||
21a3479a | 417 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
418 | snd_pcm_oss_plugin_clear(substream); |
419 | if (!direct) { | |
420 | /* add necessary plugins */ | |
421 | snd_pcm_oss_plugin_clear(substream); | |
422 | if ((err = snd_pcm_plug_format_plugins(substream, | |
423 | params, | |
424 | sparams)) < 0) { | |
425 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); | |
426 | snd_pcm_oss_plugin_clear(substream); | |
427 | goto failure; | |
428 | } | |
429 | if (runtime->oss.plugin_first) { | |
6ac77bc1 | 430 | struct snd_pcm_plugin *plugin; |
1da177e4 LT |
431 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
432 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); | |
433 | snd_pcm_oss_plugin_clear(substream); | |
434 | goto failure; | |
435 | } | |
436 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
437 | err = snd_pcm_plugin_append(plugin); | |
438 | } else { | |
439 | err = snd_pcm_plugin_insert(plugin); | |
440 | } | |
441 | if (err < 0) { | |
442 | snd_pcm_oss_plugin_clear(substream); | |
443 | goto failure; | |
444 | } | |
445 | } | |
446 | } | |
21a3479a | 447 | #endif |
1da177e4 LT |
448 | |
449 | err = snd_pcm_oss_period_size(substream, params, sparams); | |
450 | if (err < 0) | |
451 | goto failure; | |
452 | ||
453 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); | |
454 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); | |
455 | snd_assert(err >= 0, goto failure); | |
456 | ||
457 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, | |
458 | runtime->oss.periods, NULL); | |
459 | snd_assert(err >= 0, goto failure); | |
460 | ||
461 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
462 | ||
463 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { | |
464 | snd_printd("HW_PARAMS failed: %i\n", err); | |
465 | goto failure; | |
466 | } | |
467 | ||
468 | memset(sw_params, 0, sizeof(*sw_params)); | |
469 | if (runtime->oss.trigger) { | |
470 | sw_params->start_threshold = 1; | |
471 | } else { | |
472 | sw_params->start_threshold = runtime->boundary; | |
473 | } | |
474 | if (atomic_read(&runtime->mmap_count) || substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
475 | sw_params->stop_threshold = runtime->boundary; | |
476 | else | |
477 | sw_params->stop_threshold = runtime->buffer_size; | |
478 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
479 | sw_params->period_step = 1; | |
480 | sw_params->sleep_min = 0; | |
004e6538 TI |
481 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
482 | 1 : runtime->period_size; | |
1da177e4 LT |
483 | sw_params->xfer_align = 1; |
484 | if (atomic_read(&runtime->mmap_count) || | |
485 | (substream->oss.setup && substream->oss.setup->nosilence)) { | |
486 | sw_params->silence_threshold = 0; | |
487 | sw_params->silence_size = 0; | |
488 | } else { | |
489 | snd_pcm_uframes_t frames; | |
490 | frames = runtime->period_size + 16; | |
491 | if (frames > runtime->buffer_size) | |
492 | frames = runtime->buffer_size; | |
493 | sw_params->silence_threshold = frames; | |
494 | sw_params->silence_size = frames; | |
495 | } | |
496 | ||
497 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { | |
498 | snd_printd("SW_PARAMS failed: %i\n", err); | |
499 | goto failure; | |
500 | } | |
501 | ||
502 | runtime->oss.periods = params_periods(sparams); | |
503 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); | |
504 | snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure); | |
21a3479a | 505 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
506 | if (runtime->oss.plugin_first) { |
507 | err = snd_pcm_plug_alloc(substream, oss_period_size); | |
508 | if (err < 0) | |
509 | goto failure; | |
510 | } | |
21a3479a | 511 | #endif |
1da177e4 LT |
512 | oss_period_size *= oss_frame_size; |
513 | ||
514 | oss_buffer_size = oss_period_size * runtime->oss.periods; | |
515 | snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure); | |
516 | ||
517 | runtime->oss.period_bytes = oss_period_size; | |
518 | runtime->oss.buffer_bytes = oss_buffer_size; | |
519 | ||
520 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", | |
521 | runtime->oss.period_bytes, | |
522 | runtime->oss.buffer_bytes); | |
523 | pdprintf("slave: period_size = %i, buffer_size = %i\n", | |
524 | params_period_size(sparams), | |
525 | params_buffer_size(sparams)); | |
526 | ||
527 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); | |
528 | runtime->oss.channels = params_channels(params); | |
529 | runtime->oss.rate = params_rate(params); | |
530 | ||
531 | runtime->oss.params = 0; | |
532 | runtime->oss.prepare = 1; | |
533 | vfree(runtime->oss.buffer); | |
534 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); | |
535 | runtime->oss.buffer_used = 0; | |
536 | if (runtime->dma_area) | |
537 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); | |
538 | ||
539 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); | |
540 | ||
541 | err = 0; | |
542 | failure: | |
543 | kfree(sw_params); | |
544 | kfree(params); | |
545 | kfree(sparams); | |
546 | return err; | |
547 | } | |
548 | ||
6ac77bc1 | 549 | static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream) |
1da177e4 LT |
550 | { |
551 | int idx, err; | |
6ac77bc1 | 552 | struct snd_pcm_substream *asubstream = NULL, *substream; |
1da177e4 LT |
553 | |
554 | for (idx = 0; idx < 2; idx++) { | |
555 | substream = pcm_oss_file->streams[idx]; | |
556 | if (substream == NULL) | |
557 | continue; | |
558 | if (asubstream == NULL) | |
559 | asubstream = substream; | |
560 | if (substream->runtime->oss.params) { | |
561 | err = snd_pcm_oss_change_params(substream); | |
562 | if (err < 0) | |
563 | return err; | |
564 | } | |
565 | } | |
566 | snd_assert(asubstream != NULL, return -EIO); | |
567 | if (r_substream) | |
568 | *r_substream = asubstream; | |
569 | return 0; | |
570 | } | |
571 | ||
6ac77bc1 | 572 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
1da177e4 LT |
573 | { |
574 | int err; | |
6ac77bc1 | 575 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
576 | |
577 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); | |
578 | if (err < 0) { | |
579 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); | |
580 | return err; | |
581 | } | |
582 | runtime->oss.prepare = 0; | |
583 | runtime->oss.prev_hw_ptr_interrupt = 0; | |
584 | runtime->oss.period_ptr = 0; | |
585 | runtime->oss.buffer_used = 0; | |
586 | ||
587 | return 0; | |
588 | } | |
589 | ||
6ac77bc1 | 590 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
1da177e4 | 591 | { |
6ac77bc1 | 592 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
593 | int err; |
594 | ||
595 | if (substream == NULL) | |
596 | return 0; | |
597 | runtime = substream->runtime; | |
598 | if (runtime->oss.params) { | |
599 | err = snd_pcm_oss_change_params(substream); | |
600 | if (err < 0) | |
601 | return err; | |
602 | } | |
603 | if (runtime->oss.prepare) { | |
604 | err = snd_pcm_oss_prepare(substream); | |
605 | if (err < 0) | |
606 | return err; | |
607 | } | |
608 | return 0; | |
609 | } | |
610 | ||
6ac77bc1 | 611 | static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay) |
1da177e4 | 612 | { |
6ac77bc1 | 613 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
614 | snd_pcm_uframes_t frames; |
615 | int err = 0; | |
616 | ||
617 | while (1) { | |
618 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); | |
619 | if (err < 0) | |
620 | break; | |
621 | runtime = substream->runtime; | |
622 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) | |
623 | break; | |
624 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ | |
625 | /* until avail(delay) <= buffer_size */ | |
626 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; | |
627 | frames /= runtime->period_size; | |
628 | frames *= runtime->period_size; | |
629 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); | |
630 | if (err < 0) | |
631 | break; | |
632 | } | |
633 | return err; | |
634 | } | |
635 | ||
6ac77bc1 | 636 | snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 637 | { |
6ac77bc1 | 638 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
639 | int ret; |
640 | while (1) { | |
641 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
642 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
643 | #ifdef OSS_DEBUG | |
644 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
645 | printk("pcm_oss: write: recovering from XRUN\n"); | |
646 | else | |
647 | printk("pcm_oss: write: recovering from SUSPEND\n"); | |
648 | #endif | |
649 | ret = snd_pcm_oss_prepare(substream); | |
650 | if (ret < 0) | |
651 | break; | |
652 | } | |
653 | if (in_kernel) { | |
654 | mm_segment_t fs; | |
655 | fs = snd_enter_user(); | |
656 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); | |
657 | snd_leave_user(fs); | |
658 | } else { | |
659 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); | |
660 | } | |
661 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
662 | break; | |
663 | /* test, if we can't store new data, because the stream */ | |
664 | /* has not been started */ | |
665 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) | |
666 | return -EAGAIN; | |
667 | } | |
668 | return ret; | |
669 | } | |
670 | ||
6ac77bc1 | 671 | snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 672 | { |
6ac77bc1 | 673 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
674 | snd_pcm_sframes_t delay; |
675 | int ret; | |
676 | while (1) { | |
677 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
678 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
679 | #ifdef OSS_DEBUG | |
680 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
681 | printk("pcm_oss: read: recovering from XRUN\n"); | |
682 | else | |
683 | printk("pcm_oss: read: recovering from SUSPEND\n"); | |
684 | #endif | |
685 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
686 | if (ret < 0) | |
687 | break; | |
688 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { | |
689 | ret = snd_pcm_oss_prepare(substream); | |
690 | if (ret < 0) | |
691 | break; | |
692 | } | |
693 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); | |
694 | if (ret < 0) | |
695 | break; | |
696 | if (in_kernel) { | |
697 | mm_segment_t fs; | |
698 | fs = snd_enter_user(); | |
699 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); | |
700 | snd_leave_user(fs); | |
701 | } else { | |
702 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); | |
703 | } | |
704 | if (ret == -EPIPE) { | |
705 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { | |
706 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
707 | if (ret < 0) | |
708 | break; | |
709 | } | |
710 | continue; | |
711 | } | |
712 | if (ret != -ESTRPIPE) | |
713 | break; | |
714 | } | |
715 | return ret; | |
716 | } | |
717 | ||
6ac77bc1 | 718 | snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 719 | { |
6ac77bc1 | 720 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
721 | int ret; |
722 | while (1) { | |
723 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
724 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
725 | #ifdef OSS_DEBUG | |
726 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
727 | printk("pcm_oss: writev: recovering from XRUN\n"); | |
728 | else | |
729 | printk("pcm_oss: writev: recovering from SUSPEND\n"); | |
730 | #endif | |
731 | ret = snd_pcm_oss_prepare(substream); | |
732 | if (ret < 0) | |
733 | break; | |
734 | } | |
735 | if (in_kernel) { | |
736 | mm_segment_t fs; | |
737 | fs = snd_enter_user(); | |
738 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); | |
739 | snd_leave_user(fs); | |
740 | } else { | |
741 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); | |
742 | } | |
743 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
744 | break; | |
745 | ||
746 | /* test, if we can't store new data, because the stream */ | |
747 | /* has not been started */ | |
748 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) | |
749 | return -EAGAIN; | |
750 | } | |
751 | return ret; | |
752 | } | |
753 | ||
6ac77bc1 | 754 | snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 755 | { |
6ac77bc1 | 756 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
757 | int ret; |
758 | while (1) { | |
759 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
760 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
761 | #ifdef OSS_DEBUG | |
762 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
763 | printk("pcm_oss: readv: recovering from XRUN\n"); | |
764 | else | |
765 | printk("pcm_oss: readv: recovering from SUSPEND\n"); | |
766 | #endif | |
767 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
768 | if (ret < 0) | |
769 | break; | |
770 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { | |
771 | ret = snd_pcm_oss_prepare(substream); | |
772 | if (ret < 0) | |
773 | break; | |
774 | } | |
775 | if (in_kernel) { | |
776 | mm_segment_t fs; | |
777 | fs = snd_enter_user(); | |
778 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); | |
779 | snd_leave_user(fs); | |
780 | } else { | |
781 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); | |
782 | } | |
783 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
784 | break; | |
785 | } | |
786 | return ret; | |
787 | } | |
788 | ||
6ac77bc1 | 789 | static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel) |
1da177e4 | 790 | { |
6ac77bc1 | 791 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 792 | snd_pcm_sframes_t frames, frames1; |
21a3479a | 793 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 | 794 | if (runtime->oss.plugin_first) { |
6ac77bc1 | 795 | struct snd_pcm_plugin_channel *channels; |
1da177e4 LT |
796 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
797 | if (!in_kernel) { | |
798 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) | |
799 | return -EFAULT; | |
800 | buf = runtime->oss.buffer; | |
801 | } | |
802 | frames = bytes / oss_frame_bytes; | |
803 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); | |
804 | if (frames1 < 0) | |
805 | return frames1; | |
806 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); | |
807 | if (frames1 <= 0) | |
808 | return frames1; | |
809 | bytes = frames1 * oss_frame_bytes; | |
21a3479a JK |
810 | } else |
811 | #endif | |
812 | { | |
1da177e4 LT |
813 | frames = bytes_to_frames(runtime, bytes); |
814 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); | |
815 | if (frames1 <= 0) | |
816 | return frames1; | |
817 | bytes = frames_to_bytes(runtime, frames1); | |
818 | } | |
819 | return bytes; | |
820 | } | |
821 | ||
6ac77bc1 | 822 | static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes) |
1da177e4 LT |
823 | { |
824 | size_t xfer = 0; | |
825 | ssize_t tmp; | |
6ac77bc1 | 826 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
827 | |
828 | if (atomic_read(&runtime->mmap_count)) | |
829 | return -ENXIO; | |
830 | ||
831 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) | |
832 | return tmp; | |
833 | while (bytes > 0) { | |
834 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { | |
835 | tmp = bytes; | |
836 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) | |
837 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; | |
838 | if (tmp > 0) { | |
839 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) | |
840 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; | |
841 | } | |
842 | runtime->oss.buffer_used += tmp; | |
843 | buf += tmp; | |
844 | bytes -= tmp; | |
845 | xfer += tmp; | |
846 | if ((substream->oss.setup != NULL && substream->oss.setup->partialfrag) || | |
847 | runtime->oss.buffer_used == runtime->oss.period_bytes) { | |
848 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, | |
849 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); | |
850 | if (tmp <= 0) | |
851 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
852 | runtime->oss.bytes += tmp; | |
853 | runtime->oss.period_ptr += tmp; | |
854 | runtime->oss.period_ptr %= runtime->oss.period_bytes; | |
855 | if (runtime->oss.period_ptr == 0 || | |
856 | runtime->oss.period_ptr == runtime->oss.buffer_used) | |
857 | runtime->oss.buffer_used = 0; | |
858 | else if ((substream->ffile->f_flags & O_NONBLOCK) != 0) | |
859 | return xfer > 0 ? xfer : -EAGAIN; | |
860 | } | |
861 | } else { | |
4d23359b CL |
862 | tmp = snd_pcm_oss_write2(substream, |
863 | (const char __force *)buf, | |
864 | runtime->oss.period_bytes, 0); | |
1da177e4 LT |
865 | if (tmp <= 0) |
866 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
867 | runtime->oss.bytes += tmp; | |
868 | buf += tmp; | |
869 | bytes -= tmp; | |
870 | xfer += tmp; | |
871 | if ((substream->ffile->f_flags & O_NONBLOCK) != 0 && | |
872 | tmp != runtime->oss.period_bytes) | |
873 | break; | |
874 | } | |
875 | } | |
876 | return xfer; | |
877 | } | |
878 | ||
6ac77bc1 | 879 | static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel) |
1da177e4 | 880 | { |
6ac77bc1 | 881 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 882 | snd_pcm_sframes_t frames, frames1; |
21a3479a | 883 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
884 | char __user *final_dst = (char __user *)buf; |
885 | if (runtime->oss.plugin_first) { | |
6ac77bc1 | 886 | struct snd_pcm_plugin_channel *channels; |
1da177e4 LT |
887 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
888 | if (!in_kernel) | |
889 | buf = runtime->oss.buffer; | |
890 | frames = bytes / oss_frame_bytes; | |
891 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); | |
892 | if (frames1 < 0) | |
893 | return frames1; | |
894 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); | |
895 | if (frames1 <= 0) | |
896 | return frames1; | |
897 | bytes = frames1 * oss_frame_bytes; | |
898 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) | |
899 | return -EFAULT; | |
21a3479a JK |
900 | } else |
901 | #endif | |
902 | { | |
1da177e4 LT |
903 | frames = bytes_to_frames(runtime, bytes); |
904 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); | |
905 | if (frames1 <= 0) | |
906 | return frames1; | |
907 | bytes = frames_to_bytes(runtime, frames1); | |
908 | } | |
909 | return bytes; | |
910 | } | |
911 | ||
6ac77bc1 | 912 | static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes) |
1da177e4 LT |
913 | { |
914 | size_t xfer = 0; | |
915 | ssize_t tmp; | |
6ac77bc1 | 916 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
917 | |
918 | if (atomic_read(&runtime->mmap_count)) | |
919 | return -ENXIO; | |
920 | ||
921 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) | |
922 | return tmp; | |
923 | while (bytes > 0) { | |
924 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { | |
925 | if (runtime->oss.buffer_used == 0) { | |
926 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); | |
927 | if (tmp <= 0) | |
928 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
929 | runtime->oss.bytes += tmp; | |
930 | runtime->oss.period_ptr = tmp; | |
931 | runtime->oss.buffer_used = tmp; | |
932 | } | |
933 | tmp = bytes; | |
934 | if ((size_t) tmp > runtime->oss.buffer_used) | |
935 | tmp = runtime->oss.buffer_used; | |
936 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) | |
937 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; | |
938 | buf += tmp; | |
939 | bytes -= tmp; | |
940 | xfer += tmp; | |
941 | runtime->oss.buffer_used -= tmp; | |
942 | } else { | |
4d23359b CL |
943 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
944 | runtime->oss.period_bytes, 0); | |
1da177e4 LT |
945 | if (tmp <= 0) |
946 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
947 | runtime->oss.bytes += tmp; | |
948 | buf += tmp; | |
949 | bytes -= tmp; | |
950 | xfer += tmp; | |
951 | } | |
952 | } | |
953 | return xfer; | |
954 | } | |
955 | ||
6ac77bc1 | 956 | static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 957 | { |
6ac77bc1 | 958 | struct snd_pcm_substream *substream; |
1da177e4 LT |
959 | |
960 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
961 | if (substream != NULL) { | |
962 | snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
963 | substream->runtime->oss.prepare = 1; | |
964 | } | |
965 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
966 | if (substream != NULL) { | |
967 | snd_pcm_kernel_capture_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
968 | substream->runtime->oss.prepare = 1; | |
969 | } | |
970 | return 0; | |
971 | } | |
972 | ||
6ac77bc1 | 973 | static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 974 | { |
6ac77bc1 | 975 | struct snd_pcm_substream *substream; |
1da177e4 LT |
976 | int err; |
977 | ||
978 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
979 | if (substream != NULL) { | |
980 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
981 | return err; | |
982 | snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); | |
983 | } | |
984 | /* note: all errors from the start action are ignored */ | |
985 | /* OSS apps do not know, how to handle them */ | |
986 | return 0; | |
987 | } | |
988 | ||
6ac77bc1 | 989 | static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size) |
1da177e4 | 990 | { |
6ac77bc1 | 991 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
992 | ssize_t result = 0; |
993 | long res; | |
994 | wait_queue_t wait; | |
995 | ||
996 | runtime = substream->runtime; | |
997 | init_waitqueue_entry(&wait, current); | |
998 | add_wait_queue(&runtime->sleep, &wait); | |
999 | #ifdef OSS_DEBUG | |
1000 | printk("sync1: size = %li\n", size); | |
1001 | #endif | |
1002 | while (1) { | |
1003 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); | |
1004 | if (result > 0) { | |
1005 | runtime->oss.buffer_used = 0; | |
1006 | result = 0; | |
1007 | break; | |
1008 | } | |
1009 | if (result != 0 && result != -EAGAIN) | |
1010 | break; | |
1011 | result = 0; | |
1012 | set_current_state(TASK_INTERRUPTIBLE); | |
1013 | snd_pcm_stream_lock_irq(substream); | |
1014 | res = runtime->status->state; | |
1015 | snd_pcm_stream_unlock_irq(substream); | |
1016 | if (res != SNDRV_PCM_STATE_RUNNING) { | |
1017 | set_current_state(TASK_RUNNING); | |
1018 | break; | |
1019 | } | |
1020 | res = schedule_timeout(10 * HZ); | |
1021 | if (signal_pending(current)) { | |
1022 | result = -ERESTARTSYS; | |
1023 | break; | |
1024 | } | |
1025 | if (res == 0) { | |
1026 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); | |
1027 | result = -EIO; | |
1028 | break; | |
1029 | } | |
1030 | } | |
1031 | remove_wait_queue(&runtime->sleep, &wait); | |
1032 | return result; | |
1033 | } | |
1034 | ||
6ac77bc1 | 1035 | static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1036 | { |
1037 | int err = 0; | |
1038 | unsigned int saved_f_flags; | |
6ac77bc1 TI |
1039 | struct snd_pcm_substream *substream; |
1040 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1041 | snd_pcm_format_t format; |
1042 | unsigned long width; | |
1043 | size_t size; | |
1044 | ||
1045 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1046 | if (substream != NULL) { | |
1047 | runtime = substream->runtime; | |
1048 | if (atomic_read(&runtime->mmap_count)) | |
1049 | goto __direct; | |
1050 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1051 | return err; | |
1052 | format = snd_pcm_oss_format_from(runtime->oss.format); | |
1053 | width = snd_pcm_format_physical_width(format); | |
1054 | if (runtime->oss.buffer_used > 0) { | |
1055 | #ifdef OSS_DEBUG | |
1056 | printk("sync: buffer_used\n"); | |
1057 | #endif | |
1058 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; | |
1059 | snd_pcm_format_set_silence(format, | |
1060 | runtime->oss.buffer + runtime->oss.buffer_used, | |
1061 | size); | |
1062 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); | |
1063 | if (err < 0) | |
1064 | return err; | |
1065 | } else if (runtime->oss.period_ptr > 0) { | |
1066 | #ifdef OSS_DEBUG | |
1067 | printk("sync: period_ptr\n"); | |
1068 | #endif | |
1069 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; | |
1070 | snd_pcm_format_set_silence(format, | |
1071 | runtime->oss.buffer, | |
1072 | size * 8 / width); | |
1073 | err = snd_pcm_oss_sync1(substream, size); | |
1074 | if (err < 0) | |
1075 | return err; | |
1076 | } | |
1077 | /* | |
1078 | * The ALSA's period might be a bit large than OSS one. | |
1079 | * Fill the remain portion of ALSA period with zeros. | |
1080 | */ | |
1081 | size = runtime->control->appl_ptr % runtime->period_size; | |
1082 | if (size > 0) { | |
1083 | size = runtime->period_size - size; | |
1084 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { | |
1085 | size = (runtime->frame_bits * size) / 8; | |
1086 | while (size > 0) { | |
1087 | mm_segment_t fs; | |
1088 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; | |
1089 | size -= size1; | |
1090 | size1 *= 8; | |
1091 | size1 /= runtime->sample_bits; | |
1092 | snd_pcm_format_set_silence(runtime->format, | |
1093 | runtime->oss.buffer, | |
1094 | size1); | |
1095 | fs = snd_enter_user(); | |
1096 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); | |
1097 | snd_leave_user(fs); | |
1098 | } | |
1099 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { | |
1100 | void __user *buffers[runtime->channels]; | |
1101 | memset(buffers, 0, runtime->channels * sizeof(void *)); | |
1102 | snd_pcm_lib_writev(substream, buffers, size); | |
1103 | } | |
1104 | } | |
1105 | /* | |
1106 | * finish sync: drain the buffer | |
1107 | */ | |
1108 | __direct: | |
1109 | saved_f_flags = substream->ffile->f_flags; | |
1110 | substream->ffile->f_flags &= ~O_NONBLOCK; | |
1111 | err = snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
1112 | substream->ffile->f_flags = saved_f_flags; | |
1113 | if (err < 0) | |
1114 | return err; | |
1115 | runtime->oss.prepare = 1; | |
1116 | } | |
1117 | ||
1118 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1119 | if (substream != NULL) { | |
1120 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1121 | return err; | |
1122 | runtime = substream->runtime; | |
1123 | err = snd_pcm_kernel_capture_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
1124 | if (err < 0) | |
1125 | return err; | |
1126 | runtime->oss.buffer_used = 0; | |
1127 | runtime->oss.prepare = 1; | |
1128 | } | |
1129 | return 0; | |
1130 | } | |
1131 | ||
6ac77bc1 | 1132 | static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate) |
1da177e4 LT |
1133 | { |
1134 | int idx; | |
1135 | ||
1136 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1137 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1138 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1139 | if (substream == NULL) |
1140 | continue; | |
1141 | runtime = substream->runtime; | |
1142 | if (rate < 1000) | |
1143 | rate = 1000; | |
1144 | else if (rate > 192000) | |
1145 | rate = 192000; | |
1146 | if (runtime->oss.rate != rate) { | |
1147 | runtime->oss.params = 1; | |
1148 | runtime->oss.rate = rate; | |
1149 | } | |
1150 | } | |
1151 | return snd_pcm_oss_get_rate(pcm_oss_file); | |
1152 | } | |
1153 | ||
6ac77bc1 | 1154 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1155 | { |
6ac77bc1 | 1156 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1157 | int err; |
1158 | ||
1159 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1160 | return err; | |
1161 | return substream->runtime->oss.rate; | |
1162 | } | |
1163 | ||
6ac77bc1 | 1164 | static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels) |
1da177e4 LT |
1165 | { |
1166 | int idx; | |
1167 | if (channels < 1) | |
1168 | channels = 1; | |
1169 | if (channels > 128) | |
1170 | return -EINVAL; | |
1171 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1172 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1173 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1174 | if (substream == NULL) |
1175 | continue; | |
1176 | runtime = substream->runtime; | |
1177 | if (runtime->oss.channels != channels) { | |
1178 | runtime->oss.params = 1; | |
1179 | runtime->oss.channels = channels; | |
1180 | } | |
1181 | } | |
1182 | return snd_pcm_oss_get_channels(pcm_oss_file); | |
1183 | } | |
1184 | ||
6ac77bc1 | 1185 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1186 | { |
6ac77bc1 | 1187 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1188 | int err; |
1189 | ||
1190 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1191 | return err; | |
1192 | return substream->runtime->oss.channels; | |
1193 | } | |
1194 | ||
6ac77bc1 | 1195 | static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1196 | { |
6ac77bc1 | 1197 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1198 | int err; |
1199 | ||
1200 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1201 | return err; | |
1202 | return substream->runtime->oss.period_bytes; | |
1203 | } | |
1204 | ||
6ac77bc1 | 1205 | static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1206 | { |
6ac77bc1 | 1207 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1208 | int err; |
1209 | int direct; | |
6ac77bc1 | 1210 | struct snd_pcm_hw_params *params; |
1da177e4 | 1211 | unsigned int formats = 0; |
6ac77bc1 | 1212 | struct snd_mask format_mask; |
1da177e4 LT |
1213 | int fmt; |
1214 | ||
1215 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1216 | return err; | |
1217 | if (atomic_read(&substream->runtime->mmap_count)) { | |
1218 | direct = 1; | |
1219 | } else { | |
6ac77bc1 | 1220 | struct snd_pcm_oss_setup *setup = substream->oss.setup; |
1da177e4 LT |
1221 | direct = (setup != NULL && setup->direct); |
1222 | } | |
1223 | if (!direct) | |
1224 | return AFMT_MU_LAW | AFMT_U8 | | |
1225 | AFMT_S16_LE | AFMT_S16_BE | | |
1226 | AFMT_S8 | AFMT_U16_LE | | |
1227 | AFMT_U16_BE; | |
1228 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
1229 | if (!params) | |
1230 | return -ENOMEM; | |
1231 | _snd_pcm_hw_params_any(params); | |
1232 | err = snd_pcm_hw_refine(substream, params); | |
1233 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1234 | kfree(params); | |
1235 | snd_assert(err >= 0, return err); | |
1236 | for (fmt = 0; fmt < 32; ++fmt) { | |
1237 | if (snd_mask_test(&format_mask, fmt)) { | |
1238 | int f = snd_pcm_oss_format_to(fmt); | |
1239 | if (f >= 0) | |
1240 | formats |= f; | |
1241 | } | |
1242 | } | |
1243 | return formats; | |
1244 | } | |
1245 | ||
6ac77bc1 | 1246 | static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format) |
1da177e4 LT |
1247 | { |
1248 | int formats, idx; | |
1249 | ||
1250 | if (format != AFMT_QUERY) { | |
1251 | formats = snd_pcm_oss_get_formats(pcm_oss_file); | |
1252 | if (!(formats & format)) | |
1253 | format = AFMT_U8; | |
1254 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1255 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1256 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1257 | if (substream == NULL) |
1258 | continue; | |
1259 | runtime = substream->runtime; | |
1260 | if (runtime->oss.format != format) { | |
1261 | runtime->oss.params = 1; | |
1262 | runtime->oss.format = format; | |
1263 | } | |
1264 | } | |
1265 | } | |
1266 | return snd_pcm_oss_get_format(pcm_oss_file); | |
1267 | } | |
1268 | ||
6ac77bc1 | 1269 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1270 | { |
6ac77bc1 | 1271 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1272 | int err; |
1273 | ||
1274 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1275 | return err; | |
1276 | return substream->runtime->oss.format; | |
1277 | } | |
1278 | ||
6ac77bc1 | 1279 | static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide) |
1da177e4 | 1280 | { |
6ac77bc1 | 1281 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1282 | |
1283 | if (substream == NULL) | |
1284 | return 0; | |
1285 | runtime = substream->runtime; | |
1286 | if (subdivide == 0) { | |
1287 | subdivide = runtime->oss.subdivision; | |
1288 | if (subdivide == 0) | |
1289 | subdivide = 1; | |
1290 | return subdivide; | |
1291 | } | |
1292 | if (runtime->oss.subdivision || runtime->oss.fragshift) | |
1293 | return -EINVAL; | |
1294 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && | |
1295 | subdivide != 8 && subdivide != 16) | |
1296 | return -EINVAL; | |
1297 | runtime->oss.subdivision = subdivide; | |
1298 | runtime->oss.params = 1; | |
1299 | return subdivide; | |
1300 | } | |
1301 | ||
6ac77bc1 | 1302 | static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide) |
1da177e4 LT |
1303 | { |
1304 | int err = -EINVAL, idx; | |
1305 | ||
1306 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 | 1307 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1308 | if (substream == NULL) |
1309 | continue; | |
1310 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) | |
1311 | return err; | |
1312 | } | |
1313 | return err; | |
1314 | } | |
1315 | ||
6ac77bc1 | 1316 | static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val) |
1da177e4 | 1317 | { |
6ac77bc1 | 1318 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1319 | |
1320 | if (substream == NULL) | |
1321 | return 0; | |
1322 | runtime = substream->runtime; | |
1323 | if (runtime->oss.subdivision || runtime->oss.fragshift) | |
1324 | return -EINVAL; | |
1325 | runtime->oss.fragshift = val & 0xffff; | |
1326 | runtime->oss.maxfrags = (val >> 16) & 0xffff; | |
1327 | if (runtime->oss.fragshift < 4) /* < 16 */ | |
1328 | runtime->oss.fragshift = 4; | |
1329 | if (runtime->oss.maxfrags < 2) | |
1330 | runtime->oss.maxfrags = 2; | |
1331 | runtime->oss.params = 1; | |
1332 | return 0; | |
1333 | } | |
1334 | ||
6ac77bc1 | 1335 | static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val) |
1da177e4 LT |
1336 | { |
1337 | int err = -EINVAL, idx; | |
1338 | ||
1339 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 | 1340 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1341 | if (substream == NULL) |
1342 | continue; | |
1343 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) | |
1344 | return err; | |
1345 | } | |
1346 | return err; | |
1347 | } | |
1348 | ||
1349 | static int snd_pcm_oss_nonblock(struct file * file) | |
1350 | { | |
1351 | file->f_flags |= O_NONBLOCK; | |
1352 | return 0; | |
1353 | } | |
1354 | ||
6ac77bc1 | 1355 | static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res) |
1da177e4 LT |
1356 | { |
1357 | ||
1358 | if (substream == NULL) { | |
1359 | res &= ~DSP_CAP_DUPLEX; | |
1360 | return res; | |
1361 | } | |
1362 | #ifdef DSP_CAP_MULTI | |
1363 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1364 | if (substream->pstr->substream_count > 1) | |
1365 | res |= DSP_CAP_MULTI; | |
1366 | #endif | |
1367 | /* DSP_CAP_REALTIME is set all times: */ | |
1368 | /* all ALSA drivers can return actual pointer in ring buffer */ | |
1369 | #if defined(DSP_CAP_REALTIME) && 0 | |
1370 | { | |
6ac77bc1 | 1371 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1372 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
1373 | res &= ~DSP_CAP_REALTIME; | |
1374 | } | |
1375 | #endif | |
1376 | return res; | |
1377 | } | |
1378 | ||
6ac77bc1 | 1379 | static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1380 | { |
1381 | int result, idx; | |
1382 | ||
1383 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; | |
1384 | for (idx = 0; idx < 2; idx++) { | |
6ac77bc1 | 1385 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1386 | result = snd_pcm_oss_get_caps1(substream, result); |
1387 | } | |
1388 | result |= 0x0001; /* revision - same as SB AWE 64 */ | |
1389 | return result; | |
1390 | } | |
1391 | ||
6ac77bc1 | 1392 | static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr) |
1da177e4 | 1393 | { |
6ac77bc1 | 1394 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1395 | snd_pcm_uframes_t appl_ptr; |
1396 | appl_ptr = hw_ptr + runtime->buffer_size; | |
1397 | appl_ptr %= runtime->boundary; | |
1398 | runtime->control->appl_ptr = appl_ptr; | |
1399 | } | |
1400 | ||
6ac77bc1 | 1401 | static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger) |
1da177e4 | 1402 | { |
6ac77bc1 TI |
1403 | struct snd_pcm_runtime *runtime; |
1404 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; | |
1da177e4 LT |
1405 | int err, cmd; |
1406 | ||
1407 | #ifdef OSS_DEBUG | |
1408 | printk("pcm_oss: trigger = 0x%x\n", trigger); | |
1409 | #endif | |
1410 | ||
1411 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1412 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1413 | ||
1414 | if (psubstream) { | |
1415 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) | |
1416 | return err; | |
1417 | } | |
1418 | if (csubstream) { | |
1419 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) | |
1420 | return err; | |
1421 | } | |
1422 | if (psubstream) { | |
1423 | runtime = psubstream->runtime; | |
1424 | if (trigger & PCM_ENABLE_OUTPUT) { | |
1425 | if (runtime->oss.trigger) | |
1426 | goto _skip1; | |
1427 | if (atomic_read(&psubstream->runtime->mmap_count)) | |
1428 | snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); | |
1429 | runtime->oss.trigger = 1; | |
1430 | runtime->start_threshold = 1; | |
1431 | cmd = SNDRV_PCM_IOCTL_START; | |
1432 | } else { | |
1433 | if (!runtime->oss.trigger) | |
1434 | goto _skip1; | |
1435 | runtime->oss.trigger = 0; | |
1436 | runtime->start_threshold = runtime->boundary; | |
1437 | cmd = SNDRV_PCM_IOCTL_DROP; | |
1438 | runtime->oss.prepare = 1; | |
1439 | } | |
1440 | err = snd_pcm_kernel_playback_ioctl(psubstream, cmd, NULL); | |
1441 | if (err < 0) | |
1442 | return err; | |
1443 | } | |
1444 | _skip1: | |
1445 | if (csubstream) { | |
1446 | runtime = csubstream->runtime; | |
1447 | if (trigger & PCM_ENABLE_INPUT) { | |
1448 | if (runtime->oss.trigger) | |
1449 | goto _skip2; | |
1450 | runtime->oss.trigger = 1; | |
1451 | runtime->start_threshold = 1; | |
1452 | cmd = SNDRV_PCM_IOCTL_START; | |
1453 | } else { | |
1454 | if (!runtime->oss.trigger) | |
1455 | goto _skip2; | |
1456 | runtime->oss.trigger = 0; | |
1457 | runtime->start_threshold = runtime->boundary; | |
1458 | cmd = SNDRV_PCM_IOCTL_DROP; | |
1459 | runtime->oss.prepare = 1; | |
1460 | } | |
1461 | err = snd_pcm_kernel_capture_ioctl(csubstream, cmd, NULL); | |
1462 | if (err < 0) | |
1463 | return err; | |
1464 | } | |
1465 | _skip2: | |
1466 | return 0; | |
1467 | } | |
1468 | ||
6ac77bc1 | 1469 | static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1470 | { |
6ac77bc1 | 1471 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
1da177e4 LT |
1472 | int result = 0; |
1473 | ||
1474 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1475 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1476 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) | |
1477 | result |= PCM_ENABLE_OUTPUT; | |
1478 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) | |
1479 | result |= PCM_ENABLE_INPUT; | |
1480 | return result; | |
1481 | } | |
1482 | ||
6ac77bc1 | 1483 | static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1484 | { |
6ac77bc1 TI |
1485 | struct snd_pcm_substream *substream; |
1486 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1487 | snd_pcm_sframes_t delay; |
1488 | int err; | |
1489 | ||
1490 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1491 | if (substream == NULL) | |
1492 | return -EINVAL; | |
1493 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1494 | return err; | |
1495 | runtime = substream->runtime; | |
1496 | if (runtime->oss.params || runtime->oss.prepare) | |
1497 | return 0; | |
1498 | err = snd_pcm_kernel_playback_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); | |
1499 | if (err == -EPIPE) | |
1500 | delay = 0; /* hack for broken OSS applications */ | |
1501 | else if (err < 0) | |
1502 | return err; | |
1503 | return snd_pcm_oss_bytes(substream, delay); | |
1504 | } | |
1505 | ||
6ac77bc1 | 1506 | static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info) |
1da177e4 | 1507 | { |
6ac77bc1 TI |
1508 | struct snd_pcm_substream *substream; |
1509 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1510 | snd_pcm_sframes_t delay; |
1511 | int fixup; | |
1512 | struct count_info info; | |
1513 | int err; | |
1514 | ||
1515 | if (_info == NULL) | |
1516 | return -EFAULT; | |
1517 | substream = pcm_oss_file->streams[stream]; | |
1518 | if (substream == NULL) | |
1519 | return -EINVAL; | |
1520 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1521 | return err; | |
1522 | runtime = substream->runtime; | |
1523 | if (runtime->oss.params || runtime->oss.prepare) { | |
1524 | memset(&info, 0, sizeof(info)); | |
1525 | if (copy_to_user(_info, &info, sizeof(info))) | |
1526 | return -EFAULT; | |
1527 | return 0; | |
1528 | } | |
1529 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1530 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); | |
1531 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { | |
1532 | err = 0; | |
1533 | delay = 0; | |
1534 | fixup = 0; | |
1535 | } else { | |
1536 | fixup = runtime->oss.buffer_used; | |
1537 | } | |
1538 | } else { | |
1539 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); | |
1540 | fixup = -runtime->oss.buffer_used; | |
1541 | } | |
1542 | if (err < 0) | |
1543 | return err; | |
1544 | info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size); | |
1545 | if (atomic_read(&runtime->mmap_count)) { | |
1546 | snd_pcm_sframes_t n; | |
1547 | n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; | |
1548 | if (n < 0) | |
1549 | n += runtime->boundary; | |
1550 | info.blocks = n / runtime->period_size; | |
1551 | runtime->oss.prev_hw_ptr_interrupt = delay; | |
1552 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1553 | snd_pcm_oss_simulate_fill(substream, delay); | |
1554 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; | |
1555 | } else { | |
5ac0fab9 | 1556 | delay = snd_pcm_oss_bytes(substream, delay); |
fb4bd0ad | 1557 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
6ac77bc1 | 1558 | struct snd_pcm_oss_setup *setup = substream->oss.setup; |
10f69f9e TI |
1559 | if (setup && setup->buggyptr) |
1560 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; | |
1561 | else | |
1562 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; | |
1da177e4 | 1563 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
fb4bd0ad | 1564 | } else { |
5ac0fab9 JK |
1565 | delay += fixup; |
1566 | info.blocks = delay / runtime->oss.period_bytes; | |
1da177e4 | 1567 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
fb4bd0ad | 1568 | } |
1da177e4 LT |
1569 | } |
1570 | if (copy_to_user(_info, &info, sizeof(info))) | |
1571 | return -EFAULT; | |
1572 | return 0; | |
1573 | } | |
1574 | ||
6ac77bc1 | 1575 | static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info) |
1da177e4 | 1576 | { |
6ac77bc1 TI |
1577 | struct snd_pcm_substream *substream; |
1578 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1579 | snd_pcm_sframes_t avail; |
1580 | int fixup; | |
1581 | struct audio_buf_info info; | |
1582 | int err; | |
1583 | ||
1584 | if (_info == NULL) | |
1585 | return -EFAULT; | |
1586 | substream = pcm_oss_file->streams[stream]; | |
1587 | if (substream == NULL) | |
1588 | return -EINVAL; | |
1589 | runtime = substream->runtime; | |
1590 | ||
1591 | if (runtime->oss.params && | |
1592 | (err = snd_pcm_oss_change_params(substream)) < 0) | |
1593 | return err; | |
1594 | ||
1595 | info.fragsize = runtime->oss.period_bytes; | |
1596 | info.fragstotal = runtime->periods; | |
1597 | if (runtime->oss.prepare) { | |
1598 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1599 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; | |
1600 | info.fragments = runtime->oss.periods; | |
1601 | } else { | |
1602 | info.bytes = 0; | |
1603 | info.fragments = 0; | |
1604 | } | |
1605 | } else { | |
1606 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1607 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); | |
1608 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { | |
1609 | avail = runtime->buffer_size; | |
1610 | err = 0; | |
1611 | fixup = 0; | |
1612 | } else { | |
1613 | avail = runtime->buffer_size - avail; | |
1614 | fixup = -runtime->oss.buffer_used; | |
1615 | } | |
1616 | } else { | |
1617 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); | |
1618 | fixup = runtime->oss.buffer_used; | |
1619 | } | |
1620 | if (err < 0) | |
1621 | return err; | |
1622 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; | |
1623 | info.fragments = info.bytes / runtime->oss.period_bytes; | |
1624 | } | |
1625 | ||
1626 | #ifdef OSS_DEBUG | |
1627 | printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); | |
1628 | #endif | |
1629 | if (copy_to_user(_info, &info, sizeof(info))) | |
1630 | return -EFAULT; | |
1631 | return 0; | |
1632 | } | |
1633 | ||
6ac77bc1 | 1634 | static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info) |
1da177e4 LT |
1635 | { |
1636 | // it won't be probably implemented | |
1637 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); | |
1638 | return -EINVAL; | |
1639 | } | |
1640 | ||
6ac77bc1 | 1641 | static struct snd_pcm_oss_setup *snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, const char *task_name) |
1da177e4 LT |
1642 | { |
1643 | const char *ptr, *ptrl; | |
6ac77bc1 | 1644 | struct snd_pcm_oss_setup *setup; |
1da177e4 LT |
1645 | |
1646 | down(&pcm->streams[stream].oss.setup_mutex); | |
1647 | for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) { | |
1648 | if (!strcmp(setup->task_name, task_name)) { | |
1649 | up(&pcm->streams[stream].oss.setup_mutex); | |
1650 | return setup; | |
1651 | } | |
1652 | } | |
1653 | ptr = ptrl = task_name; | |
1654 | while (*ptr) { | |
1655 | if (*ptr == '/') | |
1656 | ptrl = ptr + 1; | |
1657 | ptr++; | |
1658 | } | |
1659 | if (ptrl == task_name) { | |
1660 | goto __not_found; | |
1661 | return NULL; | |
1662 | } | |
1663 | for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) { | |
1664 | if (!strcmp(setup->task_name, ptrl)) { | |
1665 | up(&pcm->streams[stream].oss.setup_mutex); | |
1666 | return setup; | |
1667 | } | |
1668 | } | |
1669 | __not_found: | |
1670 | up(&pcm->streams[stream].oss.setup_mutex); | |
1671 | return NULL; | |
1672 | } | |
1673 | ||
6ac77bc1 TI |
1674 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
1675 | struct snd_pcm_oss_setup *setup, | |
1da177e4 LT |
1676 | int minor) |
1677 | { | |
6ac77bc1 | 1678 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1679 | |
1680 | substream->oss.oss = 1; | |
1681 | substream->oss.setup = setup; | |
1682 | runtime = substream->runtime; | |
1683 | runtime->oss.params = 1; | |
1684 | runtime->oss.trigger = 1; | |
1685 | runtime->oss.rate = 8000; | |
1686 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { | |
1687 | case SNDRV_MINOR_OSS_PCM_8: | |
1688 | runtime->oss.format = AFMT_U8; | |
1689 | break; | |
1690 | case SNDRV_MINOR_OSS_PCM_16: | |
1691 | runtime->oss.format = AFMT_S16_LE; | |
1692 | break; | |
1693 | default: | |
1694 | runtime->oss.format = AFMT_MU_LAW; | |
1695 | } | |
1696 | runtime->oss.channels = 1; | |
1697 | runtime->oss.fragshift = 0; | |
1698 | runtime->oss.maxfrags = 0; | |
1699 | runtime->oss.subdivision = 0; | |
1700 | } | |
1701 | ||
6ac77bc1 | 1702 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
1da177e4 | 1703 | { |
6ac77bc1 | 1704 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1705 | runtime = substream->runtime; |
1706 | vfree(runtime->oss.buffer); | |
21a3479a | 1707 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 | 1708 | snd_pcm_oss_plugin_clear(substream); |
21a3479a | 1709 | #endif |
1da177e4 LT |
1710 | substream->oss.file = NULL; |
1711 | substream->oss.oss = 0; | |
1712 | } | |
1713 | ||
6ac77bc1 | 1714 | static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1715 | { |
1716 | int cidx; | |
1717 | snd_assert(pcm_oss_file != NULL, return -ENXIO); | |
1718 | for (cidx = 0; cidx < 2; ++cidx) { | |
6ac77bc1 TI |
1719 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
1720 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1721 | if (substream == NULL) |
1722 | continue; | |
1723 | runtime = substream->runtime; | |
1724 | ||
1725 | snd_pcm_stream_lock_irq(substream); | |
1726 | if (snd_pcm_running(substream)) | |
1727 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1728 | snd_pcm_stream_unlock_irq(substream); | |
443feb88 | 1729 | if (substream->ffile != NULL) { |
1da177e4 LT |
1730 | if (substream->ops->hw_free != NULL) |
1731 | substream->ops->hw_free(substream); | |
1732 | substream->ops->close(substream); | |
443feb88 | 1733 | substream->ffile = NULL; |
1da177e4 | 1734 | } |
1da177e4 LT |
1735 | snd_pcm_oss_release_substream(substream); |
1736 | snd_pcm_release_substream(substream); | |
1737 | } | |
1738 | kfree(pcm_oss_file); | |
1739 | return 0; | |
1740 | } | |
1741 | ||
1742 | static int snd_pcm_oss_open_file(struct file *file, | |
6ac77bc1 TI |
1743 | struct snd_pcm *pcm, |
1744 | struct snd_pcm_oss_file **rpcm_oss_file, | |
1da177e4 | 1745 | int minor, |
6ac77bc1 TI |
1746 | struct snd_pcm_oss_setup *psetup, |
1747 | struct snd_pcm_oss_setup *csetup) | |
1da177e4 LT |
1748 | { |
1749 | int err = 0; | |
6ac77bc1 TI |
1750 | struct snd_pcm_oss_file *pcm_oss_file; |
1751 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; | |
1da177e4 LT |
1752 | unsigned int f_mode = file->f_mode; |
1753 | ||
1754 | snd_assert(rpcm_oss_file != NULL, return -EINVAL); | |
1755 | *rpcm_oss_file = NULL; | |
1756 | ||
ca2c0966 | 1757 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
1da177e4 LT |
1758 | if (pcm_oss_file == NULL) |
1759 | return -ENOMEM; | |
1760 | ||
1761 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && | |
1762 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) | |
1763 | f_mode = FMODE_WRITE; | |
1764 | if ((f_mode & FMODE_WRITE) && !(psetup && psetup->disable)) { | |
1765 | if ((err = snd_pcm_open_substream(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
1766 | &psubstream)) < 0) { | |
1767 | snd_pcm_oss_release_file(pcm_oss_file); | |
1768 | return err; | |
1769 | } | |
1770 | pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK] = psubstream; | |
1771 | } | |
1772 | if ((f_mode & FMODE_READ) && !(csetup && csetup->disable)) { | |
1773 | if ((err = snd_pcm_open_substream(pcm, SNDRV_PCM_STREAM_CAPTURE, | |
1774 | &csubstream)) < 0) { | |
1775 | if (!(f_mode & FMODE_WRITE) || err != -ENODEV) { | |
1776 | snd_pcm_oss_release_file(pcm_oss_file); | |
1777 | return err; | |
1778 | } else { | |
1779 | csubstream = NULL; | |
1780 | } | |
1781 | } | |
1782 | pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE] = csubstream; | |
1783 | } | |
1784 | ||
1785 | if (psubstream == NULL && csubstream == NULL) { | |
1786 | snd_pcm_oss_release_file(pcm_oss_file); | |
1787 | return -EINVAL; | |
1788 | } | |
1789 | if (psubstream != NULL) { | |
1790 | psubstream->oss.file = pcm_oss_file; | |
1791 | err = snd_pcm_hw_constraints_init(psubstream); | |
1792 | if (err < 0) { | |
1793 | snd_printd("snd_pcm_hw_constraint_init failed\n"); | |
1794 | snd_pcm_oss_release_file(pcm_oss_file); | |
1795 | return err; | |
1796 | } | |
1797 | if ((err = psubstream->ops->open(psubstream)) < 0) { | |
1798 | snd_pcm_oss_release_file(pcm_oss_file); | |
1799 | return err; | |
1800 | } | |
443feb88 | 1801 | psubstream->ffile = file; |
1da177e4 LT |
1802 | err = snd_pcm_hw_constraints_complete(psubstream); |
1803 | if (err < 0) { | |
1804 | snd_printd("snd_pcm_hw_constraint_complete failed\n"); | |
1805 | snd_pcm_oss_release_file(pcm_oss_file); | |
1806 | return err; | |
1807 | } | |
1da177e4 LT |
1808 | snd_pcm_oss_init_substream(psubstream, psetup, minor); |
1809 | } | |
1810 | if (csubstream != NULL) { | |
1811 | csubstream->oss.file = pcm_oss_file; | |
1812 | err = snd_pcm_hw_constraints_init(csubstream); | |
1813 | if (err < 0) { | |
1814 | snd_printd("snd_pcm_hw_constraint_init failed\n"); | |
1815 | snd_pcm_oss_release_file(pcm_oss_file); | |
1816 | return err; | |
1817 | } | |
1818 | if ((err = csubstream->ops->open(csubstream)) < 0) { | |
1819 | snd_pcm_oss_release_file(pcm_oss_file); | |
1820 | return err; | |
1821 | } | |
443feb88 | 1822 | csubstream->ffile = file; |
1da177e4 LT |
1823 | err = snd_pcm_hw_constraints_complete(csubstream); |
1824 | if (err < 0) { | |
1825 | snd_printd("snd_pcm_hw_constraint_complete failed\n"); | |
1826 | snd_pcm_oss_release_file(pcm_oss_file); | |
1827 | return err; | |
1828 | } | |
1da177e4 LT |
1829 | snd_pcm_oss_init_substream(csubstream, csetup, minor); |
1830 | } | |
1831 | ||
1832 | file->private_data = pcm_oss_file; | |
1833 | *rpcm_oss_file = pcm_oss_file; | |
1834 | return 0; | |
1835 | } | |
1836 | ||
1837 | ||
93f2e378 TI |
1838 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
1839 | { | |
1840 | unsigned int idx; | |
1841 | ||
1842 | snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL); | |
1843 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) | |
1844 | name[idx] = task->comm[idx]; | |
1845 | name[idx] = '\0'; | |
1846 | return 0; | |
1847 | } | |
1848 | ||
1da177e4 LT |
1849 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
1850 | { | |
1da177e4 LT |
1851 | int err; |
1852 | char task_name[32]; | |
6ac77bc1 TI |
1853 | struct snd_pcm *pcm; |
1854 | struct snd_pcm_oss_file *pcm_oss_file; | |
1855 | struct snd_pcm_oss_setup *psetup = NULL, *csetup = NULL; | |
1da177e4 LT |
1856 | int nonblock; |
1857 | wait_queue_t wait; | |
1858 | ||
f87135f5 CL |
1859 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
1860 | SNDRV_OSS_DEVICE_TYPE_PCM); | |
1da177e4 LT |
1861 | if (pcm == NULL) { |
1862 | err = -ENODEV; | |
1863 | goto __error1; | |
1864 | } | |
1865 | err = snd_card_file_add(pcm->card, file); | |
1866 | if (err < 0) | |
1867 | goto __error1; | |
1868 | if (!try_module_get(pcm->card->module)) { | |
1869 | err = -EFAULT; | |
1870 | goto __error2; | |
1871 | } | |
1872 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { | |
1873 | err = -EFAULT; | |
1874 | goto __error; | |
1875 | } | |
1876 | if (file->f_mode & FMODE_WRITE) | |
1877 | psetup = snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, task_name); | |
1878 | if (file->f_mode & FMODE_READ) | |
1879 | csetup = snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, task_name); | |
1880 | ||
1881 | nonblock = !!(file->f_flags & O_NONBLOCK); | |
1882 | if (psetup && !psetup->disable) { | |
1883 | if (psetup->nonblock) | |
1884 | nonblock = 1; | |
1885 | else if (psetup->block) | |
1886 | nonblock = 0; | |
1887 | } else if (csetup && !csetup->disable) { | |
1888 | if (csetup->nonblock) | |
1889 | nonblock = 1; | |
1890 | else if (csetup->block) | |
1891 | nonblock = 0; | |
1892 | } | |
1893 | if (!nonblock) | |
1894 | nonblock = nonblock_open; | |
1895 | ||
1896 | init_waitqueue_entry(&wait, current); | |
1897 | add_wait_queue(&pcm->open_wait, &wait); | |
1898 | down(&pcm->open_mutex); | |
1899 | while (1) { | |
1900 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, | |
f87135f5 | 1901 | iminor(inode), psetup, csetup); |
1da177e4 LT |
1902 | if (err >= 0) |
1903 | break; | |
1904 | if (err == -EAGAIN) { | |
1905 | if (nonblock) { | |
1906 | err = -EBUSY; | |
1907 | break; | |
1908 | } | |
1909 | } else | |
1910 | break; | |
1911 | set_current_state(TASK_INTERRUPTIBLE); | |
1912 | up(&pcm->open_mutex); | |
1913 | schedule(); | |
1914 | down(&pcm->open_mutex); | |
1915 | if (signal_pending(current)) { | |
1916 | err = -ERESTARTSYS; | |
1917 | break; | |
1918 | } | |
1919 | } | |
1920 | remove_wait_queue(&pcm->open_wait, &wait); | |
1921 | up(&pcm->open_mutex); | |
1922 | if (err < 0) | |
1923 | goto __error; | |
1924 | return err; | |
1925 | ||
1926 | __error: | |
1927 | module_put(pcm->card->module); | |
1928 | __error2: | |
1929 | snd_card_file_remove(pcm->card, file); | |
1930 | __error1: | |
1931 | return err; | |
1932 | } | |
1933 | ||
1934 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) | |
1935 | { | |
6ac77bc1 TI |
1936 | struct snd_pcm *pcm; |
1937 | struct snd_pcm_substream *substream; | |
1938 | struct snd_pcm_oss_file *pcm_oss_file; | |
1da177e4 LT |
1939 | |
1940 | pcm_oss_file = file->private_data; | |
1941 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1942 | if (substream == NULL) | |
1943 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1944 | snd_assert(substream != NULL, return -ENXIO); | |
1945 | pcm = substream->pcm; | |
1946 | snd_pcm_oss_sync(pcm_oss_file); | |
1947 | down(&pcm->open_mutex); | |
1948 | snd_pcm_oss_release_file(pcm_oss_file); | |
1949 | up(&pcm->open_mutex); | |
1950 | wake_up(&pcm->open_wait); | |
1951 | module_put(pcm->card->module); | |
1952 | snd_card_file_remove(pcm->card, file); | |
1953 | return 0; | |
1954 | } | |
1955 | ||
1956 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1957 | { | |
6ac77bc1 | 1958 | struct snd_pcm_oss_file *pcm_oss_file; |
1da177e4 LT |
1959 | int __user *p = (int __user *)arg; |
1960 | int res; | |
1961 | ||
1962 | pcm_oss_file = file->private_data; | |
1963 | if (cmd == OSS_GETVERSION) | |
1964 | return put_user(SNDRV_OSS_VERSION, p); | |
1965 | if (cmd == OSS_ALSAEMULVER) | |
1966 | return put_user(1, p); | |
1967 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) | |
1968 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ | |
6ac77bc1 | 1969 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1970 | int idx; |
1971 | for (idx = 0; idx < 2; ++idx) { | |
1972 | substream = pcm_oss_file->streams[idx]; | |
1973 | if (substream != NULL) | |
1974 | break; | |
1975 | } | |
1976 | snd_assert(substream != NULL, return -ENXIO); | |
1977 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); | |
1978 | } | |
1979 | #endif | |
1980 | if (((cmd >> 8) & 0xff) != 'P') | |
1981 | return -EINVAL; | |
1982 | #ifdef OSS_DEBUG | |
1983 | printk("pcm_oss: ioctl = 0x%x\n", cmd); | |
1984 | #endif | |
1985 | switch (cmd) { | |
1986 | case SNDCTL_DSP_RESET: | |
1987 | return snd_pcm_oss_reset(pcm_oss_file); | |
1988 | case SNDCTL_DSP_SYNC: | |
1989 | return snd_pcm_oss_sync(pcm_oss_file); | |
1990 | case SNDCTL_DSP_SPEED: | |
1991 | if (get_user(res, p)) | |
1992 | return -EFAULT; | |
1993 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) | |
1994 | return res; | |
1995 | return put_user(res, p); | |
1996 | case SOUND_PCM_READ_RATE: | |
1997 | res = snd_pcm_oss_get_rate(pcm_oss_file); | |
1998 | if (res < 0) | |
1999 | return res; | |
2000 | return put_user(res, p); | |
2001 | case SNDCTL_DSP_STEREO: | |
2002 | if (get_user(res, p)) | |
2003 | return -EFAULT; | |
2004 | res = res > 0 ? 2 : 1; | |
2005 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) | |
2006 | return res; | |
2007 | return put_user(--res, p); | |
2008 | case SNDCTL_DSP_GETBLKSIZE: | |
2009 | res = snd_pcm_oss_get_block_size(pcm_oss_file); | |
2010 | if (res < 0) | |
2011 | return res; | |
2012 | return put_user(res, p); | |
2013 | case SNDCTL_DSP_SETFMT: | |
2014 | if (get_user(res, p)) | |
2015 | return -EFAULT; | |
2016 | res = snd_pcm_oss_set_format(pcm_oss_file, res); | |
2017 | if (res < 0) | |
2018 | return res; | |
2019 | return put_user(res, p); | |
2020 | case SOUND_PCM_READ_BITS: | |
2021 | res = snd_pcm_oss_get_format(pcm_oss_file); | |
2022 | if (res < 0) | |
2023 | return res; | |
2024 | return put_user(res, p); | |
2025 | case SNDCTL_DSP_CHANNELS: | |
2026 | if (get_user(res, p)) | |
2027 | return -EFAULT; | |
2028 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); | |
2029 | if (res < 0) | |
2030 | return res; | |
2031 | return put_user(res, p); | |
2032 | case SOUND_PCM_READ_CHANNELS: | |
2033 | res = snd_pcm_oss_get_channels(pcm_oss_file); | |
2034 | if (res < 0) | |
2035 | return res; | |
2036 | return put_user(res, p); | |
2037 | case SOUND_PCM_WRITE_FILTER: | |
2038 | case SOUND_PCM_READ_FILTER: | |
2039 | return -EIO; | |
2040 | case SNDCTL_DSP_POST: | |
2041 | return snd_pcm_oss_post(pcm_oss_file); | |
2042 | case SNDCTL_DSP_SUBDIVIDE: | |
2043 | if (get_user(res, p)) | |
2044 | return -EFAULT; | |
2045 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); | |
2046 | if (res < 0) | |
2047 | return res; | |
2048 | return put_user(res, p); | |
2049 | case SNDCTL_DSP_SETFRAGMENT: | |
2050 | if (get_user(res, p)) | |
2051 | return -EFAULT; | |
2052 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); | |
2053 | case SNDCTL_DSP_GETFMTS: | |
2054 | res = snd_pcm_oss_get_formats(pcm_oss_file); | |
2055 | if (res < 0) | |
2056 | return res; | |
2057 | return put_user(res, p); | |
2058 | case SNDCTL_DSP_GETOSPACE: | |
2059 | case SNDCTL_DSP_GETISPACE: | |
2060 | return snd_pcm_oss_get_space(pcm_oss_file, | |
2061 | cmd == SNDCTL_DSP_GETISPACE ? | |
2062 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2063 | (struct audio_buf_info __user *) arg); | |
2064 | case SNDCTL_DSP_NONBLOCK: | |
2065 | return snd_pcm_oss_nonblock(file); | |
2066 | case SNDCTL_DSP_GETCAPS: | |
2067 | res = snd_pcm_oss_get_caps(pcm_oss_file); | |
2068 | if (res < 0) | |
2069 | return res; | |
2070 | return put_user(res, p); | |
2071 | case SNDCTL_DSP_GETTRIGGER: | |
2072 | res = snd_pcm_oss_get_trigger(pcm_oss_file); | |
2073 | if (res < 0) | |
2074 | return res; | |
2075 | return put_user(res, p); | |
2076 | case SNDCTL_DSP_SETTRIGGER: | |
2077 | if (get_user(res, p)) | |
2078 | return -EFAULT; | |
2079 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); | |
2080 | case SNDCTL_DSP_GETIPTR: | |
2081 | case SNDCTL_DSP_GETOPTR: | |
2082 | return snd_pcm_oss_get_ptr(pcm_oss_file, | |
2083 | cmd == SNDCTL_DSP_GETIPTR ? | |
2084 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2085 | (struct count_info __user *) arg); | |
2086 | case SNDCTL_DSP_MAPINBUF: | |
2087 | case SNDCTL_DSP_MAPOUTBUF: | |
2088 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, | |
2089 | cmd == SNDCTL_DSP_MAPINBUF ? | |
2090 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2091 | (struct buffmem_desc __user *) arg); | |
2092 | case SNDCTL_DSP_SETSYNCRO: | |
2093 | /* stop DMA now.. */ | |
2094 | return 0; | |
2095 | case SNDCTL_DSP_SETDUPLEX: | |
2096 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) | |
2097 | return 0; | |
2098 | return -EIO; | |
2099 | case SNDCTL_DSP_GETODELAY: | |
2100 | res = snd_pcm_oss_get_odelay(pcm_oss_file); | |
2101 | if (res < 0) { | |
2102 | /* it's for sure, some broken apps don't check for error codes */ | |
2103 | put_user(0, p); | |
2104 | return res; | |
2105 | } | |
2106 | return put_user(res, p); | |
2107 | case SNDCTL_DSP_PROFILE: | |
2108 | return 0; /* silently ignore */ | |
2109 | default: | |
2110 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); | |
2111 | } | |
2112 | return -EINVAL; | |
2113 | } | |
2114 | ||
2115 | #ifdef CONFIG_COMPAT | |
2116 | /* all compatible */ | |
2117 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl | |
2118 | #else | |
2119 | #define snd_pcm_oss_ioctl_compat NULL | |
2120 | #endif | |
2121 | ||
2122 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
2123 | { | |
6ac77bc1 TI |
2124 | struct snd_pcm_oss_file *pcm_oss_file; |
2125 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
2126 | |
2127 | pcm_oss_file = file->private_data; | |
2128 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2129 | if (substream == NULL) | |
2130 | return -ENXIO; | |
2131 | #ifndef OSS_DEBUG | |
2132 | return snd_pcm_oss_read1(substream, buf, count); | |
2133 | #else | |
2134 | { | |
2135 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); | |
2136 | printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); | |
2137 | return res; | |
2138 | } | |
2139 | #endif | |
2140 | } | |
2141 | ||
2142 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) | |
2143 | { | |
6ac77bc1 TI |
2144 | struct snd_pcm_oss_file *pcm_oss_file; |
2145 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
2146 | long result; |
2147 | ||
2148 | pcm_oss_file = file->private_data; | |
2149 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2150 | if (substream == NULL) | |
2151 | return -ENXIO; | |
1da177e4 | 2152 | result = snd_pcm_oss_write1(substream, buf, count); |
1da177e4 LT |
2153 | #ifdef OSS_DEBUG |
2154 | printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); | |
2155 | #endif | |
2156 | return result; | |
2157 | } | |
2158 | ||
6ac77bc1 | 2159 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
1da177e4 | 2160 | { |
6ac77bc1 | 2161 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2162 | if (atomic_read(&runtime->mmap_count)) |
2163 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; | |
2164 | else | |
2165 | return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; | |
2166 | } | |
2167 | ||
6ac77bc1 | 2168 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
1da177e4 | 2169 | { |
6ac77bc1 | 2170 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2171 | if (atomic_read(&runtime->mmap_count)) |
2172 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; | |
2173 | else | |
2174 | return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; | |
2175 | } | |
2176 | ||
2177 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) | |
2178 | { | |
6ac77bc1 | 2179 | struct snd_pcm_oss_file *pcm_oss_file; |
1da177e4 | 2180 | unsigned int mask; |
6ac77bc1 | 2181 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
1da177e4 LT |
2182 | |
2183 | pcm_oss_file = file->private_data; | |
2184 | ||
2185 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2186 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2187 | ||
2188 | mask = 0; | |
2189 | if (psubstream != NULL) { | |
6ac77bc1 | 2190 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
1da177e4 LT |
2191 | poll_wait(file, &runtime->sleep, wait); |
2192 | snd_pcm_stream_lock_irq(psubstream); | |
2193 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && | |
2194 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || | |
2195 | snd_pcm_oss_playback_ready(psubstream))) | |
2196 | mask |= POLLOUT | POLLWRNORM; | |
2197 | snd_pcm_stream_unlock_irq(psubstream); | |
2198 | } | |
2199 | if (csubstream != NULL) { | |
6ac77bc1 TI |
2200 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
2201 | snd_pcm_state_t ostate; | |
1da177e4 LT |
2202 | poll_wait(file, &runtime->sleep, wait); |
2203 | snd_pcm_stream_lock_irq(csubstream); | |
2204 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || | |
2205 | snd_pcm_oss_capture_ready(csubstream)) | |
2206 | mask |= POLLIN | POLLRDNORM; | |
2207 | snd_pcm_stream_unlock_irq(csubstream); | |
2208 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { | |
6ac77bc1 | 2209 | struct snd_pcm_oss_file ofile; |
1da177e4 LT |
2210 | memset(&ofile, 0, sizeof(ofile)); |
2211 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2212 | runtime->oss.trigger = 0; | |
2213 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); | |
2214 | } | |
2215 | } | |
2216 | ||
2217 | return mask; | |
2218 | } | |
2219 | ||
2220 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) | |
2221 | { | |
6ac77bc1 TI |
2222 | struct snd_pcm_oss_file *pcm_oss_file; |
2223 | struct snd_pcm_substream *substream = NULL; | |
2224 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2225 | int err; |
2226 | ||
2227 | #ifdef OSS_DEBUG | |
2228 | printk("pcm_oss: mmap begin\n"); | |
2229 | #endif | |
2230 | pcm_oss_file = file->private_data; | |
2231 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { | |
2232 | case VM_READ | VM_WRITE: | |
2233 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2234 | if (substream) | |
2235 | break; | |
2236 | /* Fall through */ | |
2237 | case VM_READ: | |
2238 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2239 | break; | |
2240 | case VM_WRITE: | |
2241 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2242 | break; | |
2243 | default: | |
2244 | return -EINVAL; | |
2245 | } | |
2246 | /* set VM_READ access as well to fix memset() routines that do | |
2247 | reads before writes (to improve performance) */ | |
2248 | area->vm_flags |= VM_READ; | |
2249 | if (substream == NULL) | |
2250 | return -ENXIO; | |
2251 | runtime = substream->runtime; | |
2252 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) | |
2253 | return -EIO; | |
2254 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) | |
2255 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
2256 | else | |
2257 | return -EIO; | |
2258 | ||
2259 | if (runtime->oss.params) { | |
2260 | if ((err = snd_pcm_oss_change_params(substream)) < 0) | |
2261 | return err; | |
2262 | } | |
21a3479a | 2263 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
2264 | if (runtime->oss.plugin_first != NULL) |
2265 | return -EIO; | |
21a3479a | 2266 | #endif |
1da177e4 LT |
2267 | |
2268 | if (area->vm_pgoff != 0) | |
2269 | return -EINVAL; | |
2270 | ||
2271 | err = snd_pcm_mmap_data(substream, file, area); | |
2272 | if (err < 0) | |
2273 | return err; | |
2274 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; | |
2275 | runtime->silence_threshold = 0; | |
2276 | runtime->silence_size = 0; | |
2277 | #ifdef OSS_DEBUG | |
2278 | printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); | |
2279 | #endif | |
2280 | /* In mmap mode we never stop */ | |
2281 | runtime->stop_threshold = runtime->boundary; | |
2282 | ||
2283 | return 0; | |
2284 | } | |
2285 | ||
04f141a8 | 2286 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2287 | /* |
2288 | * /proc interface | |
2289 | */ | |
2290 | ||
6ac77bc1 TI |
2291 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
2292 | struct snd_info_buffer *buffer) | |
1da177e4 | 2293 | { |
6ac77bc1 TI |
2294 | struct snd_pcm_str *pstr = entry->private_data; |
2295 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; | |
1da177e4 LT |
2296 | down(&pstr->oss.setup_mutex); |
2297 | while (setup) { | |
2298 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", | |
2299 | setup->task_name, | |
2300 | setup->periods, | |
2301 | setup->period_size, | |
2302 | setup->disable ? " disable" : "", | |
2303 | setup->direct ? " direct" : "", | |
2304 | setup->block ? " block" : "", | |
2305 | setup->nonblock ? " non-block" : "", | |
2306 | setup->partialfrag ? " partial-frag" : "", | |
2307 | setup->nosilence ? " no-silence" : ""); | |
2308 | setup = setup->next; | |
2309 | } | |
2310 | up(&pstr->oss.setup_mutex); | |
2311 | } | |
2312 | ||
6ac77bc1 | 2313 | static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr) |
1da177e4 LT |
2314 | { |
2315 | unsigned int idx; | |
6ac77bc1 TI |
2316 | struct snd_pcm_substream *substream; |
2317 | struct snd_pcm_oss_setup *setup, *setupn; | |
1da177e4 LT |
2318 | |
2319 | for (idx = 0, substream = pstr->substream; | |
2320 | idx < pstr->substream_count; idx++, substream = substream->next) | |
2321 | substream->oss.setup = NULL; | |
2322 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; | |
2323 | setup; setup = setupn) { | |
2324 | setupn = setup->next; | |
2325 | kfree(setup->task_name); | |
2326 | kfree(setup); | |
2327 | } | |
2328 | pstr->oss.setup_list = NULL; | |
2329 | } | |
2330 | ||
6ac77bc1 TI |
2331 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
2332 | struct snd_info_buffer *buffer) | |
1da177e4 | 2333 | { |
6ac77bc1 | 2334 | struct snd_pcm_str *pstr = entry->private_data; |
1da177e4 LT |
2335 | char line[128], str[32], task_name[32], *ptr; |
2336 | int idx1; | |
6ac77bc1 | 2337 | struct snd_pcm_oss_setup *setup, *setup1, template; |
1da177e4 LT |
2338 | |
2339 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
2340 | down(&pstr->oss.setup_mutex); | |
2341 | memset(&template, 0, sizeof(template)); | |
2342 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); | |
2343 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { | |
2344 | snd_pcm_oss_proc_free_setup_list(pstr); | |
2345 | up(&pstr->oss.setup_mutex); | |
2346 | continue; | |
2347 | } | |
2348 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { | |
2349 | if (!strcmp(setup->task_name, task_name)) { | |
2350 | template = *setup; | |
2351 | break; | |
2352 | } | |
2353 | } | |
2354 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2355 | template.periods = simple_strtoul(str, NULL, 10); | |
2356 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2357 | template.period_size = simple_strtoul(str, NULL, 10); | |
2358 | for (idx1 = 31; idx1 >= 0; idx1--) | |
2359 | if (template.period_size & (1 << idx1)) | |
2360 | break; | |
2361 | for (idx1--; idx1 >= 0; idx1--) | |
2362 | template.period_size &= ~(1 << idx1); | |
2363 | do { | |
2364 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2365 | if (!strcmp(str, "disable")) { | |
2366 | template.disable = 1; | |
2367 | } else if (!strcmp(str, "direct")) { | |
2368 | template.direct = 1; | |
2369 | } else if (!strcmp(str, "block")) { | |
2370 | template.block = 1; | |
2371 | } else if (!strcmp(str, "non-block")) { | |
2372 | template.nonblock = 1; | |
2373 | } else if (!strcmp(str, "partial-frag")) { | |
2374 | template.partialfrag = 1; | |
2375 | } else if (!strcmp(str, "no-silence")) { | |
2376 | template.nosilence = 1; | |
10f69f9e TI |
2377 | } else if (!strcmp(str, "buggy-ptr")) { |
2378 | template.buggyptr = 1; | |
1da177e4 LT |
2379 | } |
2380 | } while (*str); | |
2381 | if (setup == NULL) { | |
6ac77bc1 | 2382 | setup = kmalloc(sizeof(struct snd_pcm_oss_setup), GFP_KERNEL); |
1da177e4 LT |
2383 | if (setup) { |
2384 | if (pstr->oss.setup_list == NULL) { | |
2385 | pstr->oss.setup_list = setup; | |
2386 | } else { | |
2387 | for (setup1 = pstr->oss.setup_list; setup1->next; setup1 = setup1->next); | |
2388 | setup1->next = setup; | |
2389 | } | |
543537bd | 2390 | template.task_name = kstrdup(task_name, GFP_KERNEL); |
1da177e4 LT |
2391 | } else { |
2392 | buffer->error = -ENOMEM; | |
2393 | } | |
2394 | } | |
2395 | if (setup) | |
2396 | *setup = template; | |
2397 | up(&pstr->oss.setup_mutex); | |
2398 | } | |
2399 | } | |
2400 | ||
6ac77bc1 | 2401 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
1da177e4 LT |
2402 | { |
2403 | int stream; | |
2404 | for (stream = 0; stream < 2; ++stream) { | |
6ac77bc1 TI |
2405 | struct snd_info_entry *entry; |
2406 | struct snd_pcm_str *pstr = &pcm->streams[stream]; | |
1da177e4 LT |
2407 | if (pstr->substream_count == 0) |
2408 | continue; | |
2409 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { | |
2410 | entry->content = SNDRV_INFO_CONTENT_TEXT; | |
2411 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; | |
2412 | entry->c.text.read_size = 8192; | |
2413 | entry->c.text.read = snd_pcm_oss_proc_read; | |
2414 | entry->c.text.write_size = 8192; | |
2415 | entry->c.text.write = snd_pcm_oss_proc_write; | |
2416 | entry->private_data = pstr; | |
2417 | if (snd_info_register(entry) < 0) { | |
2418 | snd_info_free_entry(entry); | |
2419 | entry = NULL; | |
2420 | } | |
2421 | } | |
2422 | pstr->oss.proc_entry = entry; | |
2423 | } | |
2424 | } | |
2425 | ||
6ac77bc1 | 2426 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
1da177e4 LT |
2427 | { |
2428 | int stream; | |
2429 | for (stream = 0; stream < 2; ++stream) { | |
6ac77bc1 | 2430 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
1da177e4 LT |
2431 | if (pstr->oss.proc_entry) { |
2432 | snd_info_unregister(pstr->oss.proc_entry); | |
2433 | pstr->oss.proc_entry = NULL; | |
2434 | snd_pcm_oss_proc_free_setup_list(pstr); | |
2435 | } | |
2436 | } | |
2437 | } | |
04f141a8 TI |
2438 | #else /* !CONFIG_PROC_FS */ |
2439 | #define snd_pcm_oss_proc_init(pcm) | |
2440 | #define snd_pcm_oss_proc_done(pcm) | |
2441 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
2442 | |
2443 | /* | |
2444 | * ENTRY functions | |
2445 | */ | |
2446 | ||
2447 | static struct file_operations snd_pcm_oss_f_reg = | |
2448 | { | |
2449 | .owner = THIS_MODULE, | |
2450 | .read = snd_pcm_oss_read, | |
2451 | .write = snd_pcm_oss_write, | |
2452 | .open = snd_pcm_oss_open, | |
2453 | .release = snd_pcm_oss_release, | |
2454 | .poll = snd_pcm_oss_poll, | |
2455 | .unlocked_ioctl = snd_pcm_oss_ioctl, | |
2456 | .compat_ioctl = snd_pcm_oss_ioctl_compat, | |
2457 | .mmap = snd_pcm_oss_mmap, | |
2458 | }; | |
2459 | ||
6ac77bc1 | 2460 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
1da177e4 LT |
2461 | { |
2462 | char name[128]; | |
2463 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); | |
2464 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2af677fc | 2465 | pcm->card, index, &snd_pcm_oss_f_reg, |
f87135f5 | 2466 | pcm, name) < 0) { |
d3d579f8 TI |
2467 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
2468 | pcm->card->number, pcm->device); | |
1da177e4 LT |
2469 | } |
2470 | } | |
2471 | ||
6ac77bc1 | 2472 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
1da177e4 LT |
2473 | { |
2474 | pcm->oss.reg = 0; | |
2475 | if (dsp_map[pcm->card->number] == (int)pcm->device) { | |
2476 | char name[128]; | |
2477 | int duplex; | |
2478 | register_oss_dsp(pcm, 0); | |
2479 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && | |
2480 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && | |
2481 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); | |
2482 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); | |
2483 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO | |
2484 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, | |
2485 | pcm->card->number, | |
2486 | name); | |
2487 | #endif | |
2488 | pcm->oss.reg++; | |
2489 | pcm->oss.reg_mask |= 1; | |
2490 | } | |
2491 | if (adsp_map[pcm->card->number] == (int)pcm->device) { | |
2492 | register_oss_dsp(pcm, 1); | |
2493 | pcm->oss.reg++; | |
2494 | pcm->oss.reg_mask |= 2; | |
2495 | } | |
2496 | ||
2497 | if (pcm->oss.reg) | |
2498 | snd_pcm_oss_proc_init(pcm); | |
2499 | ||
2500 | return 0; | |
2501 | } | |
2502 | ||
6ac77bc1 | 2503 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
1da177e4 LT |
2504 | { |
2505 | if (pcm->oss.reg) { | |
2506 | if (pcm->oss.reg_mask & 1) { | |
2507 | pcm->oss.reg_mask &= ~1; | |
2508 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2509 | pcm->card, 0); | |
2510 | } | |
2511 | if (pcm->oss.reg_mask & 2) { | |
2512 | pcm->oss.reg_mask &= ~2; | |
2513 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2514 | pcm->card, 1); | |
2515 | } | |
2516 | } | |
2517 | return 0; | |
2518 | } | |
2519 | ||
6ac77bc1 | 2520 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
1da177e4 LT |
2521 | { |
2522 | snd_pcm_oss_disconnect_minor(pcm); | |
2523 | if (pcm->oss.reg) { | |
2524 | if (dsp_map[pcm->card->number] == (int)pcm->device) { | |
2525 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO | |
2526 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); | |
2527 | #endif | |
2528 | } | |
2529 | pcm->oss.reg = 0; | |
2530 | snd_pcm_oss_proc_done(pcm); | |
2531 | } | |
2532 | return 0; | |
2533 | } | |
2534 | ||
6ac77bc1 | 2535 | static struct snd_pcm_notify snd_pcm_oss_notify = |
1da177e4 LT |
2536 | { |
2537 | .n_register = snd_pcm_oss_register_minor, | |
2538 | .n_disconnect = snd_pcm_oss_disconnect_minor, | |
2539 | .n_unregister = snd_pcm_oss_unregister_minor, | |
2540 | }; | |
2541 | ||
2542 | static int __init alsa_pcm_oss_init(void) | |
2543 | { | |
2544 | int i; | |
2545 | int err; | |
2546 | ||
2547 | /* check device map table */ | |
2548 | for (i = 0; i < SNDRV_CARDS; i++) { | |
2549 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { | |
d3d579f8 TI |
2550 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
2551 | i, dsp_map[i]); | |
1da177e4 LT |
2552 | dsp_map[i] = 0; |
2553 | } | |
2554 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { | |
d3d579f8 TI |
2555 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
2556 | i, adsp_map[i]); | |
1da177e4 LT |
2557 | adsp_map[i] = 1; |
2558 | } | |
2559 | } | |
2560 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) | |
2561 | return err; | |
2562 | return 0; | |
2563 | } | |
2564 | ||
2565 | static void __exit alsa_pcm_oss_exit(void) | |
2566 | { | |
2567 | snd_pcm_notify(&snd_pcm_oss_notify, 1); | |
2568 | } | |
2569 | ||
2570 | module_init(alsa_pcm_oss_init) | |
2571 | module_exit(alsa_pcm_oss_exit) |