Commit | Line | Data |
---|---|---|
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 | ||
060d77b9 TI |
211 | if (substream->oss.setup.period_size > 16) |
212 | oss_period_size = substream->oss.setup.period_size; | |
1da177e4 LT |
213 | else if (runtime->oss.fragshift) { |
214 | oss_period_size = 1 << runtime->oss.fragshift; | |
215 | if (oss_period_size > oss_buffer_size / 2) | |
216 | oss_period_size = oss_buffer_size / 2; | |
217 | } else { | |
218 | int sd; | |
219 | size_t bytes_per_sec = params_rate(oss_params) * snd_pcm_format_physical_width(params_format(oss_params)) * params_channels(oss_params) / 8; | |
220 | ||
221 | oss_period_size = oss_buffer_size; | |
222 | do { | |
223 | oss_period_size /= 2; | |
224 | } while (oss_period_size > bytes_per_sec); | |
225 | if (runtime->oss.subdivision == 0) { | |
226 | sd = 4; | |
227 | if (oss_period_size / sd > 4096) | |
228 | sd *= 2; | |
229 | if (oss_period_size / sd < 4096) | |
230 | sd = 1; | |
231 | } else | |
232 | sd = runtime->oss.subdivision; | |
233 | oss_period_size /= sd; | |
234 | if (oss_period_size < 16) | |
235 | oss_period_size = 16; | |
236 | } | |
237 | ||
238 | min_period_size = snd_pcm_plug_client_size(substream, | |
239 | snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); | |
240 | min_period_size *= oss_frame_size; | |
241 | min_period_size = 1 << (ld2(min_period_size - 1) + 1); | |
242 | if (oss_period_size < min_period_size) | |
243 | oss_period_size = min_period_size; | |
244 | ||
245 | max_period_size = snd_pcm_plug_client_size(substream, | |
246 | snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL)); | |
247 | max_period_size *= oss_frame_size; | |
248 | max_period_size = 1 << ld2(max_period_size); | |
249 | if (oss_period_size > max_period_size) | |
250 | oss_period_size = max_period_size; | |
251 | ||
252 | oss_periods = oss_buffer_size / oss_period_size; | |
253 | ||
060d77b9 TI |
254 | if (substream->oss.setup.periods > 1) |
255 | oss_periods = substream->oss.setup.periods; | |
1da177e4 LT |
256 | |
257 | s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); | |
258 | if (runtime->oss.maxfrags && s > runtime->oss.maxfrags) | |
259 | s = runtime->oss.maxfrags; | |
260 | if (oss_periods > s) | |
261 | oss_periods = s; | |
262 | ||
263 | s = snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL); | |
264 | if (s < 2) | |
265 | s = 2; | |
266 | if (oss_periods < s) | |
267 | oss_periods = s; | |
268 | ||
269 | while (oss_period_size * oss_periods > oss_buffer_size) | |
270 | oss_period_size /= 2; | |
271 | ||
272 | snd_assert(oss_period_size >= 16, return -EINVAL); | |
273 | runtime->oss.period_bytes = oss_period_size; | |
274 | runtime->oss.period_frames = 1; | |
275 | runtime->oss.periods = oss_periods; | |
276 | return 0; | |
277 | } | |
278 | ||
6ac77bc1 TI |
279 | static int choose_rate(struct snd_pcm_substream *substream, |
280 | struct snd_pcm_hw_params *params, unsigned int best_rate) | |
1da177e4 | 281 | { |
6ac77bc1 TI |
282 | struct snd_interval *it; |
283 | struct snd_pcm_hw_params *save; | |
1da177e4 LT |
284 | unsigned int rate, prev; |
285 | ||
286 | save = kmalloc(sizeof(*save), GFP_KERNEL); | |
287 | if (save == NULL) | |
288 | return -ENOMEM; | |
289 | *save = *params; | |
290 | it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); | |
291 | ||
292 | /* try multiples of the best rate */ | |
293 | rate = best_rate; | |
294 | for (;;) { | |
295 | if (it->max < rate || (it->max == rate && it->openmax)) | |
296 | break; | |
297 | if (it->min < rate || (it->min == rate && !it->openmin)) { | |
298 | int ret; | |
299 | ret = snd_pcm_hw_param_set(substream, params, | |
300 | SNDRV_PCM_HW_PARAM_RATE, | |
301 | rate, 0); | |
302 | if (ret == (int)rate) { | |
303 | kfree(save); | |
304 | return rate; | |
305 | } | |
306 | *params = *save; | |
307 | } | |
308 | prev = rate; | |
309 | rate += best_rate; | |
310 | if (rate <= prev) | |
311 | break; | |
312 | } | |
313 | ||
314 | /* not found, use the nearest rate */ | |
315 | kfree(save); | |
316 | return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL); | |
317 | } | |
318 | ||
6ac77bc1 | 319 | static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream) |
1da177e4 | 320 | { |
6ac77bc1 TI |
321 | struct snd_pcm_runtime *runtime = substream->runtime; |
322 | struct snd_pcm_hw_params *params, *sparams; | |
323 | struct snd_pcm_sw_params *sw_params; | |
1da177e4 LT |
324 | ssize_t oss_buffer_size, oss_period_size; |
325 | size_t oss_frame_size; | |
326 | int err; | |
327 | int direct; | |
328 | int format, sformat, n; | |
6ac77bc1 TI |
329 | struct snd_mask sformat_mask; |
330 | struct snd_mask mask; | |
1da177e4 LT |
331 | |
332 | sw_params = kmalloc(sizeof(*sw_params), GFP_KERNEL); | |
333 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
334 | sparams = kmalloc(sizeof(*sparams), GFP_KERNEL); | |
335 | if (!sw_params || !params || !sparams) { | |
336 | snd_printd("No memory\n"); | |
337 | err = -ENOMEM; | |
338 | goto failure; | |
339 | } | |
340 | ||
060d77b9 | 341 | if (atomic_read(&runtime->mmap_count)) |
1da177e4 | 342 | direct = 1; |
060d77b9 TI |
343 | else |
344 | direct = substream->oss.setup.direct; | |
1da177e4 LT |
345 | |
346 | _snd_pcm_hw_params_any(sparams); | |
347 | _snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS); | |
348 | _snd_pcm_hw_param_min(sparams, SNDRV_PCM_HW_PARAM_PERIODS, 2, 0); | |
349 | snd_mask_none(&mask); | |
350 | if (atomic_read(&runtime->mmap_count)) | |
351 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_MMAP_INTERLEAVED); | |
352 | else { | |
353 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_INTERLEAVED); | |
354 | if (!direct) | |
355 | snd_mask_set(&mask, SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); | |
356 | } | |
357 | err = snd_pcm_hw_param_mask(substream, sparams, SNDRV_PCM_HW_PARAM_ACCESS, &mask); | |
358 | if (err < 0) { | |
359 | snd_printd("No usable accesses\n"); | |
360 | err = -EINVAL; | |
361 | goto failure; | |
362 | } | |
363 | choose_rate(substream, sparams, runtime->oss.rate); | |
364 | snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_CHANNELS, runtime->oss.channels, NULL); | |
365 | ||
366 | format = snd_pcm_oss_format_from(runtime->oss.format); | |
367 | ||
368 | sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); | |
369 | if (direct) | |
370 | sformat = format; | |
371 | else | |
372 | sformat = snd_pcm_plug_slave_format(format, &sformat_mask); | |
373 | ||
374 | if (sformat < 0 || !snd_mask_test(&sformat_mask, sformat)) { | |
375 | for (sformat = 0; sformat <= SNDRV_PCM_FORMAT_LAST; sformat++) { | |
376 | if (snd_mask_test(&sformat_mask, sformat) && | |
377 | snd_pcm_oss_format_to(sformat) >= 0) | |
378 | break; | |
379 | } | |
380 | if (sformat > SNDRV_PCM_FORMAT_LAST) { | |
381 | snd_printd("Cannot find a format!!!\n"); | |
382 | err = -EINVAL; | |
383 | goto failure; | |
384 | } | |
385 | } | |
386 | err = _snd_pcm_hw_param_set(sparams, SNDRV_PCM_HW_PARAM_FORMAT, sformat, 0); | |
387 | snd_assert(err >= 0, goto failure); | |
388 | ||
389 | if (direct) { | |
390 | memcpy(params, sparams, sizeof(*params)); | |
391 | } else { | |
392 | _snd_pcm_hw_params_any(params); | |
393 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_ACCESS, | |
394 | SNDRV_PCM_ACCESS_RW_INTERLEAVED, 0); | |
395 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_FORMAT, | |
396 | snd_pcm_oss_format_from(runtime->oss.format), 0); | |
397 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_CHANNELS, | |
398 | runtime->oss.channels, 0); | |
399 | _snd_pcm_hw_param_set(params, SNDRV_PCM_HW_PARAM_RATE, | |
400 | runtime->oss.rate, 0); | |
401 | pdprintf("client: access = %i, format = %i, channels = %i, rate = %i\n", | |
402 | params_access(params), params_format(params), | |
403 | params_channels(params), params_rate(params)); | |
404 | } | |
405 | pdprintf("slave: access = %i, format = %i, channels = %i, rate = %i\n", | |
406 | params_access(sparams), params_format(sparams), | |
407 | params_channels(sparams), params_rate(sparams)); | |
408 | ||
409 | oss_frame_size = snd_pcm_format_physical_width(params_format(params)) * | |
410 | params_channels(params) / 8; | |
411 | ||
21a3479a | 412 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
413 | snd_pcm_oss_plugin_clear(substream); |
414 | if (!direct) { | |
415 | /* add necessary plugins */ | |
416 | snd_pcm_oss_plugin_clear(substream); | |
417 | if ((err = snd_pcm_plug_format_plugins(substream, | |
418 | params, | |
419 | sparams)) < 0) { | |
420 | snd_printd("snd_pcm_plug_format_plugins failed: %i\n", err); | |
421 | snd_pcm_oss_plugin_clear(substream); | |
422 | goto failure; | |
423 | } | |
424 | if (runtime->oss.plugin_first) { | |
6ac77bc1 | 425 | struct snd_pcm_plugin *plugin; |
1da177e4 LT |
426 | if ((err = snd_pcm_plugin_build_io(substream, sparams, &plugin)) < 0) { |
427 | snd_printd("snd_pcm_plugin_build_io failed: %i\n", err); | |
428 | snd_pcm_oss_plugin_clear(substream); | |
429 | goto failure; | |
430 | } | |
431 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
432 | err = snd_pcm_plugin_append(plugin); | |
433 | } else { | |
434 | err = snd_pcm_plugin_insert(plugin); | |
435 | } | |
436 | if (err < 0) { | |
437 | snd_pcm_oss_plugin_clear(substream); | |
438 | goto failure; | |
439 | } | |
440 | } | |
441 | } | |
21a3479a | 442 | #endif |
1da177e4 LT |
443 | |
444 | err = snd_pcm_oss_period_size(substream, params, sparams); | |
445 | if (err < 0) | |
446 | goto failure; | |
447 | ||
448 | n = snd_pcm_plug_slave_size(substream, runtime->oss.period_bytes / oss_frame_size); | |
449 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, n, NULL); | |
450 | snd_assert(err >= 0, goto failure); | |
451 | ||
452 | err = snd_pcm_hw_param_near(substream, sparams, SNDRV_PCM_HW_PARAM_PERIODS, | |
453 | runtime->oss.periods, NULL); | |
454 | snd_assert(err >= 0, goto failure); | |
455 | ||
456 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
457 | ||
458 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_HW_PARAMS, sparams)) < 0) { | |
459 | snd_printd("HW_PARAMS failed: %i\n", err); | |
460 | goto failure; | |
461 | } | |
462 | ||
463 | memset(sw_params, 0, sizeof(*sw_params)); | |
464 | if (runtime->oss.trigger) { | |
465 | sw_params->start_threshold = 1; | |
466 | } else { | |
467 | sw_params->start_threshold = runtime->boundary; | |
468 | } | |
469 | if (atomic_read(&runtime->mmap_count) || substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
470 | sw_params->stop_threshold = runtime->boundary; | |
471 | else | |
472 | sw_params->stop_threshold = runtime->buffer_size; | |
473 | sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
474 | sw_params->period_step = 1; | |
475 | sw_params->sleep_min = 0; | |
004e6538 TI |
476 | sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? |
477 | 1 : runtime->period_size; | |
1da177e4 LT |
478 | sw_params->xfer_align = 1; |
479 | if (atomic_read(&runtime->mmap_count) || | |
060d77b9 | 480 | substream->oss.setup.nosilence) { |
1da177e4 LT |
481 | sw_params->silence_threshold = 0; |
482 | sw_params->silence_size = 0; | |
483 | } else { | |
484 | snd_pcm_uframes_t frames; | |
485 | frames = runtime->period_size + 16; | |
486 | if (frames > runtime->buffer_size) | |
487 | frames = runtime->buffer_size; | |
488 | sw_params->silence_threshold = frames; | |
489 | sw_params->silence_size = frames; | |
490 | } | |
491 | ||
492 | if ((err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params)) < 0) { | |
493 | snd_printd("SW_PARAMS failed: %i\n", err); | |
494 | goto failure; | |
495 | } | |
496 | ||
497 | runtime->oss.periods = params_periods(sparams); | |
498 | oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams)); | |
499 | snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure); | |
21a3479a | 500 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
501 | if (runtime->oss.plugin_first) { |
502 | err = snd_pcm_plug_alloc(substream, oss_period_size); | |
503 | if (err < 0) | |
504 | goto failure; | |
505 | } | |
21a3479a | 506 | #endif |
1da177e4 LT |
507 | oss_period_size *= oss_frame_size; |
508 | ||
509 | oss_buffer_size = oss_period_size * runtime->oss.periods; | |
510 | snd_assert(oss_buffer_size >= 0, err = -EINVAL; goto failure); | |
511 | ||
512 | runtime->oss.period_bytes = oss_period_size; | |
513 | runtime->oss.buffer_bytes = oss_buffer_size; | |
514 | ||
515 | pdprintf("oss: period bytes = %i, buffer bytes = %i\n", | |
516 | runtime->oss.period_bytes, | |
517 | runtime->oss.buffer_bytes); | |
518 | pdprintf("slave: period_size = %i, buffer_size = %i\n", | |
519 | params_period_size(sparams), | |
520 | params_buffer_size(sparams)); | |
521 | ||
522 | runtime->oss.format = snd_pcm_oss_format_to(params_format(params)); | |
523 | runtime->oss.channels = params_channels(params); | |
524 | runtime->oss.rate = params_rate(params); | |
525 | ||
526 | runtime->oss.params = 0; | |
527 | runtime->oss.prepare = 1; | |
528 | vfree(runtime->oss.buffer); | |
529 | runtime->oss.buffer = vmalloc(runtime->oss.period_bytes); | |
530 | runtime->oss.buffer_used = 0; | |
531 | if (runtime->dma_area) | |
532 | snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes)); | |
533 | ||
534 | runtime->oss.period_frames = snd_pcm_alsa_frames(substream, oss_period_size); | |
535 | ||
536 | err = 0; | |
537 | failure: | |
538 | kfree(sw_params); | |
539 | kfree(params); | |
540 | kfree(sparams); | |
541 | return err; | |
542 | } | |
543 | ||
6ac77bc1 | 544 | static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_file, struct snd_pcm_substream **r_substream) |
1da177e4 LT |
545 | { |
546 | int idx, err; | |
6ac77bc1 | 547 | struct snd_pcm_substream *asubstream = NULL, *substream; |
1da177e4 LT |
548 | |
549 | for (idx = 0; idx < 2; idx++) { | |
550 | substream = pcm_oss_file->streams[idx]; | |
551 | if (substream == NULL) | |
552 | continue; | |
553 | if (asubstream == NULL) | |
554 | asubstream = substream; | |
555 | if (substream->runtime->oss.params) { | |
556 | err = snd_pcm_oss_change_params(substream); | |
557 | if (err < 0) | |
558 | return err; | |
559 | } | |
560 | } | |
561 | snd_assert(asubstream != NULL, return -EIO); | |
562 | if (r_substream) | |
563 | *r_substream = asubstream; | |
564 | return 0; | |
565 | } | |
566 | ||
6ac77bc1 | 567 | static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream) |
1da177e4 LT |
568 | { |
569 | int err; | |
6ac77bc1 | 570 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
571 | |
572 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL); | |
573 | if (err < 0) { | |
574 | snd_printd("snd_pcm_oss_prepare: SNDRV_PCM_IOCTL_PREPARE failed\n"); | |
575 | return err; | |
576 | } | |
577 | runtime->oss.prepare = 0; | |
578 | runtime->oss.prev_hw_ptr_interrupt = 0; | |
579 | runtime->oss.period_ptr = 0; | |
580 | runtime->oss.buffer_used = 0; | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
6ac77bc1 | 585 | static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream) |
1da177e4 | 586 | { |
6ac77bc1 | 587 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
588 | int err; |
589 | ||
590 | if (substream == NULL) | |
591 | return 0; | |
592 | runtime = substream->runtime; | |
593 | if (runtime->oss.params) { | |
594 | err = snd_pcm_oss_change_params(substream); | |
595 | if (err < 0) | |
596 | return err; | |
597 | } | |
598 | if (runtime->oss.prepare) { | |
599 | err = snd_pcm_oss_prepare(substream); | |
600 | if (err < 0) | |
601 | return err; | |
602 | } | |
603 | return 0; | |
604 | } | |
605 | ||
6ac77bc1 | 606 | static int snd_pcm_oss_capture_position_fixup(struct snd_pcm_substream *substream, snd_pcm_sframes_t *delay) |
1da177e4 | 607 | { |
6ac77bc1 | 608 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
609 | snd_pcm_uframes_t frames; |
610 | int err = 0; | |
611 | ||
612 | while (1) { | |
613 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, delay); | |
614 | if (err < 0) | |
615 | break; | |
616 | runtime = substream->runtime; | |
617 | if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size) | |
618 | break; | |
619 | /* in case of overrun, skip whole periods like OSS/Linux driver does */ | |
620 | /* until avail(delay) <= buffer_size */ | |
621 | frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; | |
622 | frames /= runtime->period_size; | |
623 | frames *= runtime->period_size; | |
624 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_FORWARD, &frames); | |
625 | if (err < 0) | |
626 | break; | |
627 | } | |
628 | return err; | |
629 | } | |
630 | ||
6ac77bc1 | 631 | snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 632 | { |
6ac77bc1 | 633 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
634 | int ret; |
635 | while (1) { | |
636 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
637 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
638 | #ifdef OSS_DEBUG | |
639 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
640 | printk("pcm_oss: write: recovering from XRUN\n"); | |
641 | else | |
642 | printk("pcm_oss: write: recovering from SUSPEND\n"); | |
643 | #endif | |
644 | ret = snd_pcm_oss_prepare(substream); | |
645 | if (ret < 0) | |
646 | break; | |
647 | } | |
648 | if (in_kernel) { | |
649 | mm_segment_t fs; | |
650 | fs = snd_enter_user(); | |
651 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); | |
652 | snd_leave_user(fs); | |
653 | } else { | |
654 | ret = snd_pcm_lib_write(substream, (void __user *)ptr, frames); | |
655 | } | |
656 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
657 | break; | |
658 | /* test, if we can't store new data, because the stream */ | |
659 | /* has not been started */ | |
660 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) | |
661 | return -EAGAIN; | |
662 | } | |
663 | return ret; | |
664 | } | |
665 | ||
6ac77bc1 | 666 | snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *ptr, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 667 | { |
6ac77bc1 | 668 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
669 | snd_pcm_sframes_t delay; |
670 | int ret; | |
671 | while (1) { | |
672 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
673 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
674 | #ifdef OSS_DEBUG | |
675 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
676 | printk("pcm_oss: read: recovering from XRUN\n"); | |
677 | else | |
678 | printk("pcm_oss: read: recovering from SUSPEND\n"); | |
679 | #endif | |
680 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
681 | if (ret < 0) | |
682 | break; | |
683 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { | |
684 | ret = snd_pcm_oss_prepare(substream); | |
685 | if (ret < 0) | |
686 | break; | |
687 | } | |
688 | ret = snd_pcm_oss_capture_position_fixup(substream, &delay); | |
689 | if (ret < 0) | |
690 | break; | |
691 | if (in_kernel) { | |
692 | mm_segment_t fs; | |
693 | fs = snd_enter_user(); | |
694 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); | |
695 | snd_leave_user(fs); | |
696 | } else { | |
697 | ret = snd_pcm_lib_read(substream, (void __user *)ptr, frames); | |
698 | } | |
699 | if (ret == -EPIPE) { | |
700 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { | |
701 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); | |
702 | if (ret < 0) | |
703 | break; | |
704 | } | |
705 | continue; | |
706 | } | |
707 | if (ret != -ESTRPIPE) | |
708 | break; | |
709 | } | |
710 | return ret; | |
711 | } | |
712 | ||
6ac77bc1 | 713 | snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 714 | { |
6ac77bc1 | 715 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
716 | int ret; |
717 | while (1) { | |
718 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
719 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
720 | #ifdef OSS_DEBUG | |
721 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
722 | printk("pcm_oss: writev: recovering from XRUN\n"); | |
723 | else | |
724 | printk("pcm_oss: writev: recovering from SUSPEND\n"); | |
725 | #endif | |
726 | ret = snd_pcm_oss_prepare(substream); | |
727 | if (ret < 0) | |
728 | break; | |
729 | } | |
730 | if (in_kernel) { | |
731 | mm_segment_t fs; | |
732 | fs = snd_enter_user(); | |
733 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); | |
734 | snd_leave_user(fs); | |
735 | } else { | |
736 | ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); | |
737 | } | |
738 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
739 | break; | |
740 | ||
741 | /* test, if we can't store new data, because the stream */ | |
742 | /* has not been started */ | |
743 | if (runtime->status->state == SNDRV_PCM_STATE_PREPARED) | |
744 | return -EAGAIN; | |
745 | } | |
746 | return ret; | |
747 | } | |
748 | ||
6ac77bc1 | 749 | snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) |
1da177e4 | 750 | { |
6ac77bc1 | 751 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
752 | int ret; |
753 | while (1) { | |
754 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN || | |
755 | runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
756 | #ifdef OSS_DEBUG | |
757 | if (runtime->status->state == SNDRV_PCM_STATE_XRUN) | |
758 | printk("pcm_oss: readv: recovering from XRUN\n"); | |
759 | else | |
760 | printk("pcm_oss: readv: recovering from SUSPEND\n"); | |
761 | #endif | |
762 | ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); | |
763 | if (ret < 0) | |
764 | break; | |
765 | } else if (runtime->status->state == SNDRV_PCM_STATE_SETUP) { | |
766 | ret = snd_pcm_oss_prepare(substream); | |
767 | if (ret < 0) | |
768 | break; | |
769 | } | |
770 | if (in_kernel) { | |
771 | mm_segment_t fs; | |
772 | fs = snd_enter_user(); | |
773 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); | |
774 | snd_leave_user(fs); | |
775 | } else { | |
776 | ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); | |
777 | } | |
778 | if (ret != -EPIPE && ret != -ESTRPIPE) | |
779 | break; | |
780 | } | |
781 | return ret; | |
782 | } | |
783 | ||
6ac77bc1 | 784 | static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel) |
1da177e4 | 785 | { |
6ac77bc1 | 786 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 787 | snd_pcm_sframes_t frames, frames1; |
21a3479a | 788 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 | 789 | if (runtime->oss.plugin_first) { |
6ac77bc1 | 790 | struct snd_pcm_plugin_channel *channels; |
1da177e4 LT |
791 | size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8; |
792 | if (!in_kernel) { | |
793 | if (copy_from_user(runtime->oss.buffer, (const char __user *)buf, bytes)) | |
794 | return -EFAULT; | |
795 | buf = runtime->oss.buffer; | |
796 | } | |
797 | frames = bytes / oss_frame_bytes; | |
798 | frames1 = snd_pcm_plug_client_channels_buf(substream, (char *)buf, frames, &channels); | |
799 | if (frames1 < 0) | |
800 | return frames1; | |
801 | frames1 = snd_pcm_plug_write_transfer(substream, channels, frames1); | |
802 | if (frames1 <= 0) | |
803 | return frames1; | |
804 | bytes = frames1 * oss_frame_bytes; | |
21a3479a JK |
805 | } else |
806 | #endif | |
807 | { | |
1da177e4 LT |
808 | frames = bytes_to_frames(runtime, bytes); |
809 | frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel); | |
810 | if (frames1 <= 0) | |
811 | return frames1; | |
812 | bytes = frames_to_bytes(runtime, frames1); | |
813 | } | |
814 | return bytes; | |
815 | } | |
816 | ||
6ac77bc1 | 817 | static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const char __user *buf, size_t bytes) |
1da177e4 LT |
818 | { |
819 | size_t xfer = 0; | |
820 | ssize_t tmp; | |
6ac77bc1 | 821 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
822 | |
823 | if (atomic_read(&runtime->mmap_count)) | |
824 | return -ENXIO; | |
825 | ||
826 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) | |
827 | return tmp; | |
828 | while (bytes > 0) { | |
829 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { | |
830 | tmp = bytes; | |
831 | if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes) | |
832 | tmp = runtime->oss.period_bytes - runtime->oss.buffer_used; | |
833 | if (tmp > 0) { | |
834 | if (copy_from_user(runtime->oss.buffer + runtime->oss.buffer_used, buf, tmp)) | |
835 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; | |
836 | } | |
837 | runtime->oss.buffer_used += tmp; | |
838 | buf += tmp; | |
839 | bytes -= tmp; | |
840 | xfer += tmp; | |
060d77b9 | 841 | if (substream->oss.setup.partialfrag || |
1da177e4 LT |
842 | runtime->oss.buffer_used == runtime->oss.period_bytes) { |
843 | tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr, | |
844 | runtime->oss.buffer_used - runtime->oss.period_ptr, 1); | |
845 | if (tmp <= 0) | |
846 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
847 | runtime->oss.bytes += tmp; | |
848 | runtime->oss.period_ptr += tmp; | |
849 | runtime->oss.period_ptr %= runtime->oss.period_bytes; | |
850 | if (runtime->oss.period_ptr == 0 || | |
851 | runtime->oss.period_ptr == runtime->oss.buffer_used) | |
852 | runtime->oss.buffer_used = 0; | |
853 | else if ((substream->ffile->f_flags & O_NONBLOCK) != 0) | |
854 | return xfer > 0 ? xfer : -EAGAIN; | |
855 | } | |
856 | } else { | |
4d23359b CL |
857 | tmp = snd_pcm_oss_write2(substream, |
858 | (const char __force *)buf, | |
859 | runtime->oss.period_bytes, 0); | |
1da177e4 LT |
860 | if (tmp <= 0) |
861 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
862 | runtime->oss.bytes += tmp; | |
863 | buf += tmp; | |
864 | bytes -= tmp; | |
865 | xfer += tmp; | |
866 | if ((substream->ffile->f_flags & O_NONBLOCK) != 0 && | |
867 | tmp != runtime->oss.period_bytes) | |
868 | break; | |
869 | } | |
870 | } | |
871 | return xfer; | |
872 | } | |
873 | ||
6ac77bc1 | 874 | static ssize_t snd_pcm_oss_read2(struct snd_pcm_substream *substream, char *buf, size_t bytes, int in_kernel) |
1da177e4 | 875 | { |
6ac77bc1 | 876 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 877 | snd_pcm_sframes_t frames, frames1; |
21a3479a | 878 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
879 | char __user *final_dst = (char __user *)buf; |
880 | if (runtime->oss.plugin_first) { | |
6ac77bc1 | 881 | struct snd_pcm_plugin_channel *channels; |
1da177e4 LT |
882 | size_t oss_frame_bytes = (runtime->oss.plugin_last->dst_width * runtime->oss.plugin_last->dst_format.channels) / 8; |
883 | if (!in_kernel) | |
884 | buf = runtime->oss.buffer; | |
885 | frames = bytes / oss_frame_bytes; | |
886 | frames1 = snd_pcm_plug_client_channels_buf(substream, buf, frames, &channels); | |
887 | if (frames1 < 0) | |
888 | return frames1; | |
889 | frames1 = snd_pcm_plug_read_transfer(substream, channels, frames1); | |
890 | if (frames1 <= 0) | |
891 | return frames1; | |
892 | bytes = frames1 * oss_frame_bytes; | |
893 | if (!in_kernel && copy_to_user(final_dst, buf, bytes)) | |
894 | return -EFAULT; | |
21a3479a JK |
895 | } else |
896 | #endif | |
897 | { | |
1da177e4 LT |
898 | frames = bytes_to_frames(runtime, bytes); |
899 | frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel); | |
900 | if (frames1 <= 0) | |
901 | return frames1; | |
902 | bytes = frames_to_bytes(runtime, frames1); | |
903 | } | |
904 | return bytes; | |
905 | } | |
906 | ||
6ac77bc1 | 907 | static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __user *buf, size_t bytes) |
1da177e4 LT |
908 | { |
909 | size_t xfer = 0; | |
910 | ssize_t tmp; | |
6ac77bc1 | 911 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
912 | |
913 | if (atomic_read(&runtime->mmap_count)) | |
914 | return -ENXIO; | |
915 | ||
916 | if ((tmp = snd_pcm_oss_make_ready(substream)) < 0) | |
917 | return tmp; | |
918 | while (bytes > 0) { | |
919 | if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) { | |
920 | if (runtime->oss.buffer_used == 0) { | |
921 | tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1); | |
922 | if (tmp <= 0) | |
923 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
924 | runtime->oss.bytes += tmp; | |
925 | runtime->oss.period_ptr = tmp; | |
926 | runtime->oss.buffer_used = tmp; | |
927 | } | |
928 | tmp = bytes; | |
929 | if ((size_t) tmp > runtime->oss.buffer_used) | |
930 | tmp = runtime->oss.buffer_used; | |
931 | if (copy_to_user(buf, runtime->oss.buffer + (runtime->oss.period_ptr - runtime->oss.buffer_used), tmp)) | |
932 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : -EFAULT; | |
933 | buf += tmp; | |
934 | bytes -= tmp; | |
935 | xfer += tmp; | |
936 | runtime->oss.buffer_used -= tmp; | |
937 | } else { | |
4d23359b CL |
938 | tmp = snd_pcm_oss_read2(substream, (char __force *)buf, |
939 | runtime->oss.period_bytes, 0); | |
1da177e4 LT |
940 | if (tmp <= 0) |
941 | return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp; | |
942 | runtime->oss.bytes += tmp; | |
943 | buf += tmp; | |
944 | bytes -= tmp; | |
945 | xfer += tmp; | |
946 | } | |
947 | } | |
948 | return xfer; | |
949 | } | |
950 | ||
6ac77bc1 | 951 | static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 952 | { |
6ac77bc1 | 953 | struct snd_pcm_substream *substream; |
1da177e4 LT |
954 | |
955 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
956 | if (substream != NULL) { | |
bf1bbb5a | 957 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
1da177e4 LT |
958 | substream->runtime->oss.prepare = 1; |
959 | } | |
960 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
961 | if (substream != NULL) { | |
bf1bbb5a | 962 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
1da177e4 LT |
963 | substream->runtime->oss.prepare = 1; |
964 | } | |
965 | return 0; | |
966 | } | |
967 | ||
6ac77bc1 | 968 | static int snd_pcm_oss_post(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 969 | { |
6ac77bc1 | 970 | struct snd_pcm_substream *substream; |
1da177e4 LT |
971 | int err; |
972 | ||
973 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
974 | if (substream != NULL) { | |
975 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
976 | return err; | |
bf1bbb5a | 977 | snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_START, NULL); |
1da177e4 LT |
978 | } |
979 | /* note: all errors from the start action are ignored */ | |
980 | /* OSS apps do not know, how to handle them */ | |
981 | return 0; | |
982 | } | |
983 | ||
6ac77bc1 | 984 | static int snd_pcm_oss_sync1(struct snd_pcm_substream *substream, size_t size) |
1da177e4 | 985 | { |
6ac77bc1 | 986 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
987 | ssize_t result = 0; |
988 | long res; | |
989 | wait_queue_t wait; | |
990 | ||
991 | runtime = substream->runtime; | |
992 | init_waitqueue_entry(&wait, current); | |
993 | add_wait_queue(&runtime->sleep, &wait); | |
994 | #ifdef OSS_DEBUG | |
995 | printk("sync1: size = %li\n", size); | |
996 | #endif | |
997 | while (1) { | |
998 | result = snd_pcm_oss_write2(substream, runtime->oss.buffer, size, 1); | |
999 | if (result > 0) { | |
1000 | runtime->oss.buffer_used = 0; | |
1001 | result = 0; | |
1002 | break; | |
1003 | } | |
1004 | if (result != 0 && result != -EAGAIN) | |
1005 | break; | |
1006 | result = 0; | |
1007 | set_current_state(TASK_INTERRUPTIBLE); | |
1008 | snd_pcm_stream_lock_irq(substream); | |
1009 | res = runtime->status->state; | |
1010 | snd_pcm_stream_unlock_irq(substream); | |
1011 | if (res != SNDRV_PCM_STATE_RUNNING) { | |
1012 | set_current_state(TASK_RUNNING); | |
1013 | break; | |
1014 | } | |
1015 | res = schedule_timeout(10 * HZ); | |
1016 | if (signal_pending(current)) { | |
1017 | result = -ERESTARTSYS; | |
1018 | break; | |
1019 | } | |
1020 | if (res == 0) { | |
1021 | snd_printk(KERN_ERR "OSS sync error - DMA timeout\n"); | |
1022 | result = -EIO; | |
1023 | break; | |
1024 | } | |
1025 | } | |
1026 | remove_wait_queue(&runtime->sleep, &wait); | |
1027 | return result; | |
1028 | } | |
1029 | ||
6ac77bc1 | 1030 | static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1031 | { |
1032 | int err = 0; | |
1033 | unsigned int saved_f_flags; | |
6ac77bc1 TI |
1034 | struct snd_pcm_substream *substream; |
1035 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1036 | snd_pcm_format_t format; |
1037 | unsigned long width; | |
1038 | size_t size; | |
1039 | ||
1040 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1041 | if (substream != NULL) { | |
1042 | runtime = substream->runtime; | |
1043 | if (atomic_read(&runtime->mmap_count)) | |
1044 | goto __direct; | |
1045 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1046 | return err; | |
1047 | format = snd_pcm_oss_format_from(runtime->oss.format); | |
1048 | width = snd_pcm_format_physical_width(format); | |
1049 | if (runtime->oss.buffer_used > 0) { | |
1050 | #ifdef OSS_DEBUG | |
1051 | printk("sync: buffer_used\n"); | |
1052 | #endif | |
1053 | size = (8 * (runtime->oss.period_bytes - runtime->oss.buffer_used) + 7) / width; | |
1054 | snd_pcm_format_set_silence(format, | |
1055 | runtime->oss.buffer + runtime->oss.buffer_used, | |
1056 | size); | |
1057 | err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes); | |
1058 | if (err < 0) | |
1059 | return err; | |
1060 | } else if (runtime->oss.period_ptr > 0) { | |
1061 | #ifdef OSS_DEBUG | |
1062 | printk("sync: period_ptr\n"); | |
1063 | #endif | |
1064 | size = runtime->oss.period_bytes - runtime->oss.period_ptr; | |
1065 | snd_pcm_format_set_silence(format, | |
1066 | runtime->oss.buffer, | |
1067 | size * 8 / width); | |
1068 | err = snd_pcm_oss_sync1(substream, size); | |
1069 | if (err < 0) | |
1070 | return err; | |
1071 | } | |
1072 | /* | |
1073 | * The ALSA's period might be a bit large than OSS one. | |
1074 | * Fill the remain portion of ALSA period with zeros. | |
1075 | */ | |
1076 | size = runtime->control->appl_ptr % runtime->period_size; | |
1077 | if (size > 0) { | |
1078 | size = runtime->period_size - size; | |
1079 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { | |
1080 | size = (runtime->frame_bits * size) / 8; | |
1081 | while (size > 0) { | |
1082 | mm_segment_t fs; | |
1083 | size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; | |
1084 | size -= size1; | |
1085 | size1 *= 8; | |
1086 | size1 /= runtime->sample_bits; | |
1087 | snd_pcm_format_set_silence(runtime->format, | |
1088 | runtime->oss.buffer, | |
1089 | size1); | |
1090 | fs = snd_enter_user(); | |
1091 | snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1); | |
1092 | snd_leave_user(fs); | |
1093 | } | |
1094 | } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { | |
1095 | void __user *buffers[runtime->channels]; | |
1096 | memset(buffers, 0, runtime->channels * sizeof(void *)); | |
1097 | snd_pcm_lib_writev(substream, buffers, size); | |
1098 | } | |
1099 | } | |
1100 | /* | |
1101 | * finish sync: drain the buffer | |
1102 | */ | |
1103 | __direct: | |
1104 | saved_f_flags = substream->ffile->f_flags; | |
1105 | substream->ffile->f_flags &= ~O_NONBLOCK; | |
bf1bbb5a | 1106 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DRAIN, NULL); |
1da177e4 LT |
1107 | substream->ffile->f_flags = saved_f_flags; |
1108 | if (err < 0) | |
1109 | return err; | |
1110 | runtime->oss.prepare = 1; | |
1111 | } | |
1112 | ||
1113 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1114 | if (substream != NULL) { | |
1115 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1116 | return err; | |
1117 | runtime = substream->runtime; | |
bf1bbb5a | 1118 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); |
1da177e4 LT |
1119 | if (err < 0) |
1120 | return err; | |
1121 | runtime->oss.buffer_used = 0; | |
1122 | runtime->oss.prepare = 1; | |
1123 | } | |
1124 | return 0; | |
1125 | } | |
1126 | ||
6ac77bc1 | 1127 | static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate) |
1da177e4 LT |
1128 | { |
1129 | int idx; | |
1130 | ||
1131 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1132 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1133 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1134 | if (substream == NULL) |
1135 | continue; | |
1136 | runtime = substream->runtime; | |
1137 | if (rate < 1000) | |
1138 | rate = 1000; | |
1139 | else if (rate > 192000) | |
1140 | rate = 192000; | |
1141 | if (runtime->oss.rate != rate) { | |
1142 | runtime->oss.params = 1; | |
1143 | runtime->oss.rate = rate; | |
1144 | } | |
1145 | } | |
1146 | return snd_pcm_oss_get_rate(pcm_oss_file); | |
1147 | } | |
1148 | ||
6ac77bc1 | 1149 | static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1150 | { |
6ac77bc1 | 1151 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1152 | int err; |
1153 | ||
1154 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1155 | return err; | |
1156 | return substream->runtime->oss.rate; | |
1157 | } | |
1158 | ||
6ac77bc1 | 1159 | static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsigned int channels) |
1da177e4 LT |
1160 | { |
1161 | int idx; | |
1162 | if (channels < 1) | |
1163 | channels = 1; | |
1164 | if (channels > 128) | |
1165 | return -EINVAL; | |
1166 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1167 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1168 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1169 | if (substream == NULL) |
1170 | continue; | |
1171 | runtime = substream->runtime; | |
1172 | if (runtime->oss.channels != channels) { | |
1173 | runtime->oss.params = 1; | |
1174 | runtime->oss.channels = channels; | |
1175 | } | |
1176 | } | |
1177 | return snd_pcm_oss_get_channels(pcm_oss_file); | |
1178 | } | |
1179 | ||
6ac77bc1 | 1180 | static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1181 | { |
6ac77bc1 | 1182 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1183 | int err; |
1184 | ||
1185 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1186 | return err; | |
1187 | return substream->runtime->oss.channels; | |
1188 | } | |
1189 | ||
6ac77bc1 | 1190 | static int snd_pcm_oss_get_block_size(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1191 | { |
6ac77bc1 | 1192 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1193 | int err; |
1194 | ||
1195 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1196 | return err; | |
1197 | return substream->runtime->oss.period_bytes; | |
1198 | } | |
1199 | ||
6ac77bc1 | 1200 | static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1201 | { |
6ac77bc1 | 1202 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1203 | int err; |
1204 | int direct; | |
6ac77bc1 | 1205 | struct snd_pcm_hw_params *params; |
1da177e4 | 1206 | unsigned int formats = 0; |
6ac77bc1 | 1207 | struct snd_mask format_mask; |
1da177e4 LT |
1208 | int fmt; |
1209 | ||
1210 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1211 | return err; | |
060d77b9 | 1212 | if (atomic_read(&substream->runtime->mmap_count)) |
1da177e4 | 1213 | direct = 1; |
060d77b9 TI |
1214 | else |
1215 | direct = substream->oss.setup.direct; | |
1da177e4 LT |
1216 | if (!direct) |
1217 | return AFMT_MU_LAW | AFMT_U8 | | |
1218 | AFMT_S16_LE | AFMT_S16_BE | | |
1219 | AFMT_S8 | AFMT_U16_LE | | |
1220 | AFMT_U16_BE; | |
1221 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
1222 | if (!params) | |
1223 | return -ENOMEM; | |
1224 | _snd_pcm_hw_params_any(params); | |
1225 | err = snd_pcm_hw_refine(substream, params); | |
1226 | format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1227 | kfree(params); | |
1228 | snd_assert(err >= 0, return err); | |
1229 | for (fmt = 0; fmt < 32; ++fmt) { | |
1230 | if (snd_mask_test(&format_mask, fmt)) { | |
1231 | int f = snd_pcm_oss_format_to(fmt); | |
1232 | if (f >= 0) | |
1233 | formats |= f; | |
1234 | } | |
1235 | } | |
1236 | return formats; | |
1237 | } | |
1238 | ||
6ac77bc1 | 1239 | static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format) |
1da177e4 LT |
1240 | { |
1241 | int formats, idx; | |
1242 | ||
1243 | if (format != AFMT_QUERY) { | |
1244 | formats = snd_pcm_oss_get_formats(pcm_oss_file); | |
5c59e09d SF |
1245 | if (formats < 0) |
1246 | return formats; | |
1da177e4 LT |
1247 | if (!(formats & format)) |
1248 | format = AFMT_U8; | |
1249 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 TI |
1250 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1251 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1252 | if (substream == NULL) |
1253 | continue; | |
1254 | runtime = substream->runtime; | |
1255 | if (runtime->oss.format != format) { | |
1256 | runtime->oss.params = 1; | |
1257 | runtime->oss.format = format; | |
1258 | } | |
1259 | } | |
1260 | } | |
1261 | return snd_pcm_oss_get_format(pcm_oss_file); | |
1262 | } | |
1263 | ||
6ac77bc1 | 1264 | static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1265 | { |
6ac77bc1 | 1266 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1267 | int err; |
1268 | ||
1269 | if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) | |
1270 | return err; | |
1271 | return substream->runtime->oss.format; | |
1272 | } | |
1273 | ||
6ac77bc1 | 1274 | static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int subdivide) |
1da177e4 | 1275 | { |
6ac77bc1 | 1276 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1277 | |
1278 | if (substream == NULL) | |
1279 | return 0; | |
1280 | runtime = substream->runtime; | |
1281 | if (subdivide == 0) { | |
1282 | subdivide = runtime->oss.subdivision; | |
1283 | if (subdivide == 0) | |
1284 | subdivide = 1; | |
1285 | return subdivide; | |
1286 | } | |
1287 | if (runtime->oss.subdivision || runtime->oss.fragshift) | |
1288 | return -EINVAL; | |
1289 | if (subdivide != 1 && subdivide != 2 && subdivide != 4 && | |
1290 | subdivide != 8 && subdivide != 16) | |
1291 | return -EINVAL; | |
1292 | runtime->oss.subdivision = subdivide; | |
1293 | runtime->oss.params = 1; | |
1294 | return subdivide; | |
1295 | } | |
1296 | ||
6ac77bc1 | 1297 | static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int subdivide) |
1da177e4 LT |
1298 | { |
1299 | int err = -EINVAL, idx; | |
1300 | ||
1301 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 | 1302 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1303 | if (substream == NULL) |
1304 | continue; | |
1305 | if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0) | |
1306 | return err; | |
1307 | } | |
1308 | return err; | |
1309 | } | |
1310 | ||
6ac77bc1 | 1311 | static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsigned int val) |
1da177e4 | 1312 | { |
6ac77bc1 | 1313 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1314 | |
1315 | if (substream == NULL) | |
1316 | return 0; | |
1317 | runtime = substream->runtime; | |
1318 | if (runtime->oss.subdivision || runtime->oss.fragshift) | |
1319 | return -EINVAL; | |
1320 | runtime->oss.fragshift = val & 0xffff; | |
1321 | runtime->oss.maxfrags = (val >> 16) & 0xffff; | |
1322 | if (runtime->oss.fragshift < 4) /* < 16 */ | |
1323 | runtime->oss.fragshift = 4; | |
1324 | if (runtime->oss.maxfrags < 2) | |
1325 | runtime->oss.maxfrags = 2; | |
1326 | runtime->oss.params = 1; | |
1327 | return 0; | |
1328 | } | |
1329 | ||
6ac77bc1 | 1330 | static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsigned int val) |
1da177e4 LT |
1331 | { |
1332 | int err = -EINVAL, idx; | |
1333 | ||
1334 | for (idx = 1; idx >= 0; --idx) { | |
6ac77bc1 | 1335 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1336 | if (substream == NULL) |
1337 | continue; | |
1338 | if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0) | |
1339 | return err; | |
1340 | } | |
1341 | return err; | |
1342 | } | |
1343 | ||
1344 | static int snd_pcm_oss_nonblock(struct file * file) | |
1345 | { | |
1346 | file->f_flags |= O_NONBLOCK; | |
1347 | return 0; | |
1348 | } | |
1349 | ||
6ac77bc1 | 1350 | static int snd_pcm_oss_get_caps1(struct snd_pcm_substream *substream, int res) |
1da177e4 LT |
1351 | { |
1352 | ||
1353 | if (substream == NULL) { | |
1354 | res &= ~DSP_CAP_DUPLEX; | |
1355 | return res; | |
1356 | } | |
1357 | #ifdef DSP_CAP_MULTI | |
1358 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1359 | if (substream->pstr->substream_count > 1) | |
1360 | res |= DSP_CAP_MULTI; | |
1361 | #endif | |
1362 | /* DSP_CAP_REALTIME is set all times: */ | |
1363 | /* all ALSA drivers can return actual pointer in ring buffer */ | |
1364 | #if defined(DSP_CAP_REALTIME) && 0 | |
1365 | { | |
6ac77bc1 | 1366 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1367 | if (runtime->info & (SNDRV_PCM_INFO_BLOCK_TRANSFER|SNDRV_PCM_INFO_BATCH)) |
1368 | res &= ~DSP_CAP_REALTIME; | |
1369 | } | |
1370 | #endif | |
1371 | return res; | |
1372 | } | |
1373 | ||
6ac77bc1 | 1374 | static int snd_pcm_oss_get_caps(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1375 | { |
1376 | int result, idx; | |
1377 | ||
1378 | result = DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_DUPLEX | DSP_CAP_REALTIME; | |
1379 | for (idx = 0; idx < 2; idx++) { | |
6ac77bc1 | 1380 | struct snd_pcm_substream *substream = pcm_oss_file->streams[idx]; |
1da177e4 LT |
1381 | result = snd_pcm_oss_get_caps1(substream, result); |
1382 | } | |
1383 | result |= 0x0001; /* revision - same as SB AWE 64 */ | |
1384 | return result; | |
1385 | } | |
1386 | ||
6ac77bc1 | 1387 | static void snd_pcm_oss_simulate_fill(struct snd_pcm_substream *substream, snd_pcm_uframes_t hw_ptr) |
1da177e4 | 1388 | { |
6ac77bc1 | 1389 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1390 | snd_pcm_uframes_t appl_ptr; |
1391 | appl_ptr = hw_ptr + runtime->buffer_size; | |
1392 | appl_ptr %= runtime->boundary; | |
1393 | runtime->control->appl_ptr = appl_ptr; | |
1394 | } | |
1395 | ||
6ac77bc1 | 1396 | static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int trigger) |
1da177e4 | 1397 | { |
6ac77bc1 TI |
1398 | struct snd_pcm_runtime *runtime; |
1399 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; | |
1da177e4 LT |
1400 | int err, cmd; |
1401 | ||
1402 | #ifdef OSS_DEBUG | |
1403 | printk("pcm_oss: trigger = 0x%x\n", trigger); | |
1404 | #endif | |
1405 | ||
1406 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1407 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1408 | ||
1409 | if (psubstream) { | |
1410 | if ((err = snd_pcm_oss_make_ready(psubstream)) < 0) | |
1411 | return err; | |
1412 | } | |
1413 | if (csubstream) { | |
1414 | if ((err = snd_pcm_oss_make_ready(csubstream)) < 0) | |
1415 | return err; | |
1416 | } | |
1417 | if (psubstream) { | |
1418 | runtime = psubstream->runtime; | |
1419 | if (trigger & PCM_ENABLE_OUTPUT) { | |
1420 | if (runtime->oss.trigger) | |
1421 | goto _skip1; | |
1422 | if (atomic_read(&psubstream->runtime->mmap_count)) | |
1423 | snd_pcm_oss_simulate_fill(psubstream, runtime->hw_ptr_interrupt); | |
1424 | runtime->oss.trigger = 1; | |
1425 | runtime->start_threshold = 1; | |
1426 | cmd = SNDRV_PCM_IOCTL_START; | |
1427 | } else { | |
1428 | if (!runtime->oss.trigger) | |
1429 | goto _skip1; | |
1430 | runtime->oss.trigger = 0; | |
1431 | runtime->start_threshold = runtime->boundary; | |
1432 | cmd = SNDRV_PCM_IOCTL_DROP; | |
1433 | runtime->oss.prepare = 1; | |
1434 | } | |
bf1bbb5a | 1435 | err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL); |
1da177e4 LT |
1436 | if (err < 0) |
1437 | return err; | |
1438 | } | |
1439 | _skip1: | |
1440 | if (csubstream) { | |
1441 | runtime = csubstream->runtime; | |
1442 | if (trigger & PCM_ENABLE_INPUT) { | |
1443 | if (runtime->oss.trigger) | |
1444 | goto _skip2; | |
1445 | runtime->oss.trigger = 1; | |
1446 | runtime->start_threshold = 1; | |
1447 | cmd = SNDRV_PCM_IOCTL_START; | |
1448 | } else { | |
1449 | if (!runtime->oss.trigger) | |
1450 | goto _skip2; | |
1451 | runtime->oss.trigger = 0; | |
1452 | runtime->start_threshold = runtime->boundary; | |
1453 | cmd = SNDRV_PCM_IOCTL_DROP; | |
1454 | runtime->oss.prepare = 1; | |
1455 | } | |
bf1bbb5a | 1456 | err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL); |
1da177e4 LT |
1457 | if (err < 0) |
1458 | return err; | |
1459 | } | |
1460 | _skip2: | |
1461 | return 0; | |
1462 | } | |
1463 | ||
6ac77bc1 | 1464 | static int snd_pcm_oss_get_trigger(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1465 | { |
6ac77bc1 | 1466 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
1da177e4 LT |
1467 | int result = 0; |
1468 | ||
1469 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1470 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1471 | if (psubstream && psubstream->runtime && psubstream->runtime->oss.trigger) | |
1472 | result |= PCM_ENABLE_OUTPUT; | |
1473 | if (csubstream && csubstream->runtime && csubstream->runtime->oss.trigger) | |
1474 | result |= PCM_ENABLE_INPUT; | |
1475 | return result; | |
1476 | } | |
1477 | ||
6ac77bc1 | 1478 | static int snd_pcm_oss_get_odelay(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 | 1479 | { |
6ac77bc1 TI |
1480 | struct snd_pcm_substream *substream; |
1481 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1482 | snd_pcm_sframes_t delay; |
1483 | int err; | |
1484 | ||
1485 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1486 | if (substream == NULL) | |
1487 | return -EINVAL; | |
1488 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1489 | return err; | |
1490 | runtime = substream->runtime; | |
1491 | if (runtime->oss.params || runtime->oss.prepare) | |
1492 | return 0; | |
bf1bbb5a | 1493 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); |
1da177e4 LT |
1494 | if (err == -EPIPE) |
1495 | delay = 0; /* hack for broken OSS applications */ | |
1496 | else if (err < 0) | |
1497 | return err; | |
1498 | return snd_pcm_oss_bytes(substream, delay); | |
1499 | } | |
1500 | ||
6ac77bc1 | 1501 | static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct count_info __user * _info) |
1da177e4 | 1502 | { |
6ac77bc1 TI |
1503 | struct snd_pcm_substream *substream; |
1504 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1505 | snd_pcm_sframes_t delay; |
1506 | int fixup; | |
1507 | struct count_info info; | |
1508 | int err; | |
1509 | ||
1510 | if (_info == NULL) | |
1511 | return -EFAULT; | |
1512 | substream = pcm_oss_file->streams[stream]; | |
1513 | if (substream == NULL) | |
1514 | return -EINVAL; | |
1515 | if ((err = snd_pcm_oss_make_ready(substream)) < 0) | |
1516 | return err; | |
1517 | runtime = substream->runtime; | |
1518 | if (runtime->oss.params || runtime->oss.prepare) { | |
1519 | memset(&info, 0, sizeof(info)); | |
1520 | if (copy_to_user(_info, &info, sizeof(info))) | |
1521 | return -EFAULT; | |
1522 | return 0; | |
1523 | } | |
1524 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1525 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &delay); | |
1526 | if (err == -EPIPE || err == -ESTRPIPE || (! err && delay < 0)) { | |
1527 | err = 0; | |
1528 | delay = 0; | |
1529 | fixup = 0; | |
1530 | } else { | |
1531 | fixup = runtime->oss.buffer_used; | |
1532 | } | |
1533 | } else { | |
1534 | err = snd_pcm_oss_capture_position_fixup(substream, &delay); | |
1535 | fixup = -runtime->oss.buffer_used; | |
1536 | } | |
1537 | if (err < 0) | |
1538 | return err; | |
1539 | info.ptr = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr % runtime->buffer_size); | |
1540 | if (atomic_read(&runtime->mmap_count)) { | |
1541 | snd_pcm_sframes_t n; | |
1542 | n = (delay = runtime->hw_ptr_interrupt) - runtime->oss.prev_hw_ptr_interrupt; | |
1543 | if (n < 0) | |
1544 | n += runtime->boundary; | |
1545 | info.blocks = n / runtime->period_size; | |
1546 | runtime->oss.prev_hw_ptr_interrupt = delay; | |
1547 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1548 | snd_pcm_oss_simulate_fill(substream, delay); | |
1549 | info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX; | |
1550 | } else { | |
5ac0fab9 | 1551 | delay = snd_pcm_oss_bytes(substream, delay); |
fb4bd0ad | 1552 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
060d77b9 | 1553 | if (substream->oss.setup.buggyptr) |
10f69f9e TI |
1554 | info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes; |
1555 | else | |
1556 | info.blocks = (delay + fixup) / runtime->oss.period_bytes; | |
1da177e4 | 1557 | info.bytes = (runtime->oss.bytes - delay) & INT_MAX; |
fb4bd0ad | 1558 | } else { |
5ac0fab9 JK |
1559 | delay += fixup; |
1560 | info.blocks = delay / runtime->oss.period_bytes; | |
1da177e4 | 1561 | info.bytes = (runtime->oss.bytes + delay) & INT_MAX; |
fb4bd0ad | 1562 | } |
1da177e4 LT |
1563 | } |
1564 | if (copy_to_user(_info, &info, sizeof(info))) | |
1565 | return -EFAULT; | |
1566 | return 0; | |
1567 | } | |
1568 | ||
6ac77bc1 | 1569 | static int snd_pcm_oss_get_space(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct audio_buf_info __user *_info) |
1da177e4 | 1570 | { |
6ac77bc1 TI |
1571 | struct snd_pcm_substream *substream; |
1572 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1573 | snd_pcm_sframes_t avail; |
1574 | int fixup; | |
1575 | struct audio_buf_info info; | |
1576 | int err; | |
1577 | ||
1578 | if (_info == NULL) | |
1579 | return -EFAULT; | |
1580 | substream = pcm_oss_file->streams[stream]; | |
1581 | if (substream == NULL) | |
1582 | return -EINVAL; | |
1583 | runtime = substream->runtime; | |
1584 | ||
1585 | if (runtime->oss.params && | |
1586 | (err = snd_pcm_oss_change_params(substream)) < 0) | |
1587 | return err; | |
1588 | ||
1589 | info.fragsize = runtime->oss.period_bytes; | |
1590 | info.fragstotal = runtime->periods; | |
1591 | if (runtime->oss.prepare) { | |
1592 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1593 | info.bytes = runtime->oss.period_bytes * runtime->oss.periods; | |
1594 | info.fragments = runtime->oss.periods; | |
1595 | } else { | |
1596 | info.bytes = 0; | |
1597 | info.fragments = 0; | |
1598 | } | |
1599 | } else { | |
1600 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
1601 | err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DELAY, &avail); | |
1602 | if (err == -EPIPE || err == -ESTRPIPE || (! err && avail < 0)) { | |
1603 | avail = runtime->buffer_size; | |
1604 | err = 0; | |
1605 | fixup = 0; | |
1606 | } else { | |
1607 | avail = runtime->buffer_size - avail; | |
1608 | fixup = -runtime->oss.buffer_used; | |
1609 | } | |
1610 | } else { | |
1611 | err = snd_pcm_oss_capture_position_fixup(substream, &avail); | |
1612 | fixup = runtime->oss.buffer_used; | |
1613 | } | |
1614 | if (err < 0) | |
1615 | return err; | |
1616 | info.bytes = snd_pcm_oss_bytes(substream, avail) + fixup; | |
1617 | info.fragments = info.bytes / runtime->oss.period_bytes; | |
1618 | } | |
1619 | ||
1620 | #ifdef OSS_DEBUG | |
1621 | printk("pcm_oss: space: bytes = %i, fragments = %i, fragstotal = %i, fragsize = %i\n", info.bytes, info.fragments, info.fragstotal, info.fragsize); | |
1622 | #endif | |
1623 | if (copy_to_user(_info, &info, sizeof(info))) | |
1624 | return -EFAULT; | |
1625 | return 0; | |
1626 | } | |
1627 | ||
6ac77bc1 | 1628 | static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int stream, struct buffmem_desc __user * _info) |
1da177e4 LT |
1629 | { |
1630 | // it won't be probably implemented | |
1631 | // snd_printd("TODO: snd_pcm_oss_get_mapbuf\n"); | |
1632 | return -EINVAL; | |
1633 | } | |
1634 | ||
060d77b9 | 1635 | static const char *strip_task_path(const char *path) |
1da177e4 | 1636 | { |
060d77b9 TI |
1637 | const char *ptr, *ptrl = NULL; |
1638 | for (ptr = path; *ptr; ptr++) { | |
1da177e4 LT |
1639 | if (*ptr == '/') |
1640 | ptrl = ptr + 1; | |
1da177e4 | 1641 | } |
060d77b9 TI |
1642 | return ptrl; |
1643 | } | |
1644 | ||
1645 | static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, | |
1646 | const char *task_name, | |
1647 | struct snd_pcm_oss_setup *rsetup) | |
1648 | { | |
1649 | struct snd_pcm_oss_setup *setup; | |
1650 | ||
1651 | mutex_lock(&pcm->streams[stream].oss.setup_mutex); | |
1652 | do { | |
1653 | for (setup = pcm->streams[stream].oss.setup_list; setup; | |
1654 | setup = setup->next) { | |
1655 | if (!strcmp(setup->task_name, task_name)) | |
1656 | goto out; | |
1da177e4 | 1657 | } |
060d77b9 TI |
1658 | } while ((task_name = strip_task_path(task_name)) != NULL); |
1659 | out: | |
1660 | if (setup) | |
1661 | *rsetup = *setup; | |
1a60d4c5 | 1662 | mutex_unlock(&pcm->streams[stream].oss.setup_mutex); |
1da177e4 LT |
1663 | } |
1664 | ||
3bf75f9b TI |
1665 | static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream) |
1666 | { | |
1667 | struct snd_pcm_runtime *runtime; | |
1668 | runtime = substream->runtime; | |
1669 | vfree(runtime->oss.buffer); | |
1670 | runtime->oss.buffer = NULL; | |
1671 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS | |
1672 | snd_pcm_oss_plugin_clear(substream); | |
1673 | #endif | |
1674 | substream->oss.oss = 0; | |
1675 | } | |
1676 | ||
6ac77bc1 TI |
1677 | static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream, |
1678 | struct snd_pcm_oss_setup *setup, | |
1da177e4 LT |
1679 | int minor) |
1680 | { | |
6ac77bc1 | 1681 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
1682 | |
1683 | substream->oss.oss = 1; | |
060d77b9 | 1684 | substream->oss.setup = *setup; |
3bf75f9b TI |
1685 | if (setup->nonblock) |
1686 | substream->ffile->f_flags |= O_NONBLOCK; | |
1576274d | 1687 | else if (setup->block) |
3bf75f9b | 1688 | substream->ffile->f_flags &= ~O_NONBLOCK; |
1da177e4 LT |
1689 | runtime = substream->runtime; |
1690 | runtime->oss.params = 1; | |
1691 | runtime->oss.trigger = 1; | |
1692 | runtime->oss.rate = 8000; | |
1693 | switch (SNDRV_MINOR_OSS_DEVICE(minor)) { | |
1694 | case SNDRV_MINOR_OSS_PCM_8: | |
1695 | runtime->oss.format = AFMT_U8; | |
1696 | break; | |
1697 | case SNDRV_MINOR_OSS_PCM_16: | |
1698 | runtime->oss.format = AFMT_S16_LE; | |
1699 | break; | |
1700 | default: | |
1701 | runtime->oss.format = AFMT_MU_LAW; | |
1702 | } | |
1703 | runtime->oss.channels = 1; | |
1704 | runtime->oss.fragshift = 0; | |
1705 | runtime->oss.maxfrags = 0; | |
1706 | runtime->oss.subdivision = 0; | |
3bf75f9b | 1707 | substream->pcm_release = snd_pcm_oss_release_substream; |
1da177e4 LT |
1708 | } |
1709 | ||
6ac77bc1 | 1710 | static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file) |
1da177e4 LT |
1711 | { |
1712 | int cidx; | |
1713 | snd_assert(pcm_oss_file != NULL, return -ENXIO); | |
1714 | for (cidx = 0; cidx < 2; ++cidx) { | |
6ac77bc1 | 1715 | struct snd_pcm_substream *substream = pcm_oss_file->streams[cidx]; |
3bf75f9b TI |
1716 | if (substream) |
1717 | snd_pcm_release_substream(substream); | |
1da177e4 LT |
1718 | } |
1719 | kfree(pcm_oss_file); | |
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | static int snd_pcm_oss_open_file(struct file *file, | |
6ac77bc1 TI |
1724 | struct snd_pcm *pcm, |
1725 | struct snd_pcm_oss_file **rpcm_oss_file, | |
1da177e4 | 1726 | int minor, |
060d77b9 | 1727 | struct snd_pcm_oss_setup *setup) |
1da177e4 | 1728 | { |
3bf75f9b | 1729 | int idx, err; |
6ac77bc1 | 1730 | struct snd_pcm_oss_file *pcm_oss_file; |
3bf75f9b | 1731 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1732 | unsigned int f_mode = file->f_mode; |
1733 | ||
1734 | snd_assert(rpcm_oss_file != NULL, return -EINVAL); | |
1735 | *rpcm_oss_file = NULL; | |
1736 | ||
ca2c0966 | 1737 | pcm_oss_file = kzalloc(sizeof(*pcm_oss_file), GFP_KERNEL); |
1da177e4 LT |
1738 | if (pcm_oss_file == NULL) |
1739 | return -ENOMEM; | |
1740 | ||
1741 | if ((f_mode & (FMODE_WRITE|FMODE_READ)) == (FMODE_WRITE|FMODE_READ) && | |
1742 | (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)) | |
1743 | f_mode = FMODE_WRITE; | |
3bf75f9b TI |
1744 | |
1745 | for (idx = 0; idx < 2; idx++) { | |
060d77b9 | 1746 | if (setup[idx].disable) |
3bf75f9b TI |
1747 | continue; |
1748 | if (idx == SNDRV_PCM_STREAM_PLAYBACK) { | |
1749 | if (! (f_mode & FMODE_WRITE)) | |
1750 | continue; | |
1751 | } else { | |
1752 | if (! (f_mode & FMODE_READ)) | |
1753 | continue; | |
1754 | } | |
1755 | err = snd_pcm_open_substream(pcm, idx, file, &substream); | |
1756 | if (err < 0) { | |
1da177e4 LT |
1757 | snd_pcm_oss_release_file(pcm_oss_file); |
1758 | return err; | |
1759 | } | |
3bf75f9b TI |
1760 | |
1761 | pcm_oss_file->streams[idx] = substream; | |
1576274d | 1762 | substream->file = pcm_oss_file; |
060d77b9 | 1763 | snd_pcm_oss_init_substream(substream, &setup[idx], minor); |
1da177e4 LT |
1764 | } |
1765 | ||
bbdc1b7d | 1766 | if (!pcm_oss_file->streams[0] && !pcm_oss_file->streams[1]) { |
1da177e4 LT |
1767 | snd_pcm_oss_release_file(pcm_oss_file); |
1768 | return -EINVAL; | |
1769 | } | |
1da177e4 LT |
1770 | |
1771 | file->private_data = pcm_oss_file; | |
1772 | *rpcm_oss_file = pcm_oss_file; | |
1773 | return 0; | |
1774 | } | |
1775 | ||
1776 | ||
93f2e378 TI |
1777 | static int snd_task_name(struct task_struct *task, char *name, size_t size) |
1778 | { | |
1779 | unsigned int idx; | |
1780 | ||
1781 | snd_assert(task != NULL && name != NULL && size >= 2, return -EINVAL); | |
1782 | for (idx = 0; idx < sizeof(task->comm) && idx + 1 < size; idx++) | |
1783 | name[idx] = task->comm[idx]; | |
1784 | name[idx] = '\0'; | |
1785 | return 0; | |
1786 | } | |
1787 | ||
1da177e4 LT |
1788 | static int snd_pcm_oss_open(struct inode *inode, struct file *file) |
1789 | { | |
1da177e4 LT |
1790 | int err; |
1791 | char task_name[32]; | |
6ac77bc1 TI |
1792 | struct snd_pcm *pcm; |
1793 | struct snd_pcm_oss_file *pcm_oss_file; | |
060d77b9 | 1794 | struct snd_pcm_oss_setup setup[2]; |
1da177e4 LT |
1795 | int nonblock; |
1796 | wait_queue_t wait; | |
1797 | ||
f87135f5 CL |
1798 | pcm = snd_lookup_oss_minor_data(iminor(inode), |
1799 | SNDRV_OSS_DEVICE_TYPE_PCM); | |
1da177e4 LT |
1800 | if (pcm == NULL) { |
1801 | err = -ENODEV; | |
1802 | goto __error1; | |
1803 | } | |
1804 | err = snd_card_file_add(pcm->card, file); | |
1805 | if (err < 0) | |
1806 | goto __error1; | |
1807 | if (!try_module_get(pcm->card->module)) { | |
1808 | err = -EFAULT; | |
1809 | goto __error2; | |
1810 | } | |
1811 | if (snd_task_name(current, task_name, sizeof(task_name)) < 0) { | |
1812 | err = -EFAULT; | |
1813 | goto __error; | |
1814 | } | |
1576274d | 1815 | memset(setup, 0, sizeof(setup)); |
1da177e4 | 1816 | if (file->f_mode & FMODE_WRITE) |
060d77b9 TI |
1817 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
1818 | task_name, &setup[0]); | |
1da177e4 | 1819 | if (file->f_mode & FMODE_READ) |
060d77b9 TI |
1820 | snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, |
1821 | task_name, &setup[1]); | |
1da177e4 LT |
1822 | |
1823 | nonblock = !!(file->f_flags & O_NONBLOCK); | |
1da177e4 LT |
1824 | if (!nonblock) |
1825 | nonblock = nonblock_open; | |
1826 | ||
1827 | init_waitqueue_entry(&wait, current); | |
1828 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 1829 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
1830 | while (1) { |
1831 | err = snd_pcm_oss_open_file(file, pcm, &pcm_oss_file, | |
3bf75f9b | 1832 | iminor(inode), setup); |
1da177e4 LT |
1833 | if (err >= 0) |
1834 | break; | |
1835 | if (err == -EAGAIN) { | |
1836 | if (nonblock) { | |
1837 | err = -EBUSY; | |
1838 | break; | |
1839 | } | |
1840 | } else | |
1841 | break; | |
1842 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 1843 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 1844 | schedule(); |
1a60d4c5 | 1845 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
1846 | if (signal_pending(current)) { |
1847 | err = -ERESTARTSYS; | |
1848 | break; | |
1849 | } | |
1850 | } | |
1851 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 1852 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
1853 | if (err < 0) |
1854 | goto __error; | |
1855 | return err; | |
1856 | ||
1857 | __error: | |
1858 | module_put(pcm->card->module); | |
1859 | __error2: | |
1860 | snd_card_file_remove(pcm->card, file); | |
1861 | __error1: | |
1862 | return err; | |
1863 | } | |
1864 | ||
1865 | static int snd_pcm_oss_release(struct inode *inode, struct file *file) | |
1866 | { | |
6ac77bc1 TI |
1867 | struct snd_pcm *pcm; |
1868 | struct snd_pcm_substream *substream; | |
1869 | struct snd_pcm_oss_file *pcm_oss_file; | |
1da177e4 LT |
1870 | |
1871 | pcm_oss_file = file->private_data; | |
1872 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
1873 | if (substream == NULL) | |
1874 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
1875 | snd_assert(substream != NULL, return -ENXIO); | |
1876 | pcm = substream->pcm; | |
1877 | snd_pcm_oss_sync(pcm_oss_file); | |
1a60d4c5 | 1878 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 1879 | snd_pcm_oss_release_file(pcm_oss_file); |
1a60d4c5 | 1880 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
1881 | wake_up(&pcm->open_wait); |
1882 | module_put(pcm->card->module); | |
1883 | snd_card_file_remove(pcm->card, file); | |
1884 | return 0; | |
1885 | } | |
1886 | ||
1887 | static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1888 | { | |
6ac77bc1 | 1889 | struct snd_pcm_oss_file *pcm_oss_file; |
1da177e4 LT |
1890 | int __user *p = (int __user *)arg; |
1891 | int res; | |
1892 | ||
1893 | pcm_oss_file = file->private_data; | |
1894 | if (cmd == OSS_GETVERSION) | |
1895 | return put_user(SNDRV_OSS_VERSION, p); | |
1896 | if (cmd == OSS_ALSAEMULVER) | |
1897 | return put_user(1, p); | |
1898 | #if defined(CONFIG_SND_MIXER_OSS) || (defined(MODULE) && defined(CONFIG_SND_MIXER_OSS_MODULE)) | |
1899 | if (((cmd >> 8) & 0xff) == 'M') { /* mixer ioctl - for OSS compatibility */ | |
6ac77bc1 | 1900 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1901 | int idx; |
1902 | for (idx = 0; idx < 2; ++idx) { | |
1903 | substream = pcm_oss_file->streams[idx]; | |
1904 | if (substream != NULL) | |
1905 | break; | |
1906 | } | |
1907 | snd_assert(substream != NULL, return -ENXIO); | |
1908 | return snd_mixer_oss_ioctl_card(substream->pcm->card, cmd, arg); | |
1909 | } | |
1910 | #endif | |
1911 | if (((cmd >> 8) & 0xff) != 'P') | |
1912 | return -EINVAL; | |
1913 | #ifdef OSS_DEBUG | |
1914 | printk("pcm_oss: ioctl = 0x%x\n", cmd); | |
1915 | #endif | |
1916 | switch (cmd) { | |
1917 | case SNDCTL_DSP_RESET: | |
1918 | return snd_pcm_oss_reset(pcm_oss_file); | |
1919 | case SNDCTL_DSP_SYNC: | |
1920 | return snd_pcm_oss_sync(pcm_oss_file); | |
1921 | case SNDCTL_DSP_SPEED: | |
1922 | if (get_user(res, p)) | |
1923 | return -EFAULT; | |
1924 | if ((res = snd_pcm_oss_set_rate(pcm_oss_file, res))<0) | |
1925 | return res; | |
1926 | return put_user(res, p); | |
1927 | case SOUND_PCM_READ_RATE: | |
1928 | res = snd_pcm_oss_get_rate(pcm_oss_file); | |
1929 | if (res < 0) | |
1930 | return res; | |
1931 | return put_user(res, p); | |
1932 | case SNDCTL_DSP_STEREO: | |
1933 | if (get_user(res, p)) | |
1934 | return -EFAULT; | |
1935 | res = res > 0 ? 2 : 1; | |
1936 | if ((res = snd_pcm_oss_set_channels(pcm_oss_file, res)) < 0) | |
1937 | return res; | |
1938 | return put_user(--res, p); | |
1939 | case SNDCTL_DSP_GETBLKSIZE: | |
1940 | res = snd_pcm_oss_get_block_size(pcm_oss_file); | |
1941 | if (res < 0) | |
1942 | return res; | |
1943 | return put_user(res, p); | |
1944 | case SNDCTL_DSP_SETFMT: | |
1945 | if (get_user(res, p)) | |
1946 | return -EFAULT; | |
1947 | res = snd_pcm_oss_set_format(pcm_oss_file, res); | |
1948 | if (res < 0) | |
1949 | return res; | |
1950 | return put_user(res, p); | |
1951 | case SOUND_PCM_READ_BITS: | |
1952 | res = snd_pcm_oss_get_format(pcm_oss_file); | |
1953 | if (res < 0) | |
1954 | return res; | |
1955 | return put_user(res, p); | |
1956 | case SNDCTL_DSP_CHANNELS: | |
1957 | if (get_user(res, p)) | |
1958 | return -EFAULT; | |
1959 | res = snd_pcm_oss_set_channels(pcm_oss_file, res); | |
1960 | if (res < 0) | |
1961 | return res; | |
1962 | return put_user(res, p); | |
1963 | case SOUND_PCM_READ_CHANNELS: | |
1964 | res = snd_pcm_oss_get_channels(pcm_oss_file); | |
1965 | if (res < 0) | |
1966 | return res; | |
1967 | return put_user(res, p); | |
1968 | case SOUND_PCM_WRITE_FILTER: | |
1969 | case SOUND_PCM_READ_FILTER: | |
1970 | return -EIO; | |
1971 | case SNDCTL_DSP_POST: | |
1972 | return snd_pcm_oss_post(pcm_oss_file); | |
1973 | case SNDCTL_DSP_SUBDIVIDE: | |
1974 | if (get_user(res, p)) | |
1975 | return -EFAULT; | |
1976 | res = snd_pcm_oss_set_subdivide(pcm_oss_file, res); | |
1977 | if (res < 0) | |
1978 | return res; | |
1979 | return put_user(res, p); | |
1980 | case SNDCTL_DSP_SETFRAGMENT: | |
1981 | if (get_user(res, p)) | |
1982 | return -EFAULT; | |
1983 | return snd_pcm_oss_set_fragment(pcm_oss_file, res); | |
1984 | case SNDCTL_DSP_GETFMTS: | |
1985 | res = snd_pcm_oss_get_formats(pcm_oss_file); | |
1986 | if (res < 0) | |
1987 | return res; | |
1988 | return put_user(res, p); | |
1989 | case SNDCTL_DSP_GETOSPACE: | |
1990 | case SNDCTL_DSP_GETISPACE: | |
1991 | return snd_pcm_oss_get_space(pcm_oss_file, | |
1992 | cmd == SNDCTL_DSP_GETISPACE ? | |
1993 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
1994 | (struct audio_buf_info __user *) arg); | |
1995 | case SNDCTL_DSP_NONBLOCK: | |
1996 | return snd_pcm_oss_nonblock(file); | |
1997 | case SNDCTL_DSP_GETCAPS: | |
1998 | res = snd_pcm_oss_get_caps(pcm_oss_file); | |
1999 | if (res < 0) | |
2000 | return res; | |
2001 | return put_user(res, p); | |
2002 | case SNDCTL_DSP_GETTRIGGER: | |
2003 | res = snd_pcm_oss_get_trigger(pcm_oss_file); | |
2004 | if (res < 0) | |
2005 | return res; | |
2006 | return put_user(res, p); | |
2007 | case SNDCTL_DSP_SETTRIGGER: | |
2008 | if (get_user(res, p)) | |
2009 | return -EFAULT; | |
2010 | return snd_pcm_oss_set_trigger(pcm_oss_file, res); | |
2011 | case SNDCTL_DSP_GETIPTR: | |
2012 | case SNDCTL_DSP_GETOPTR: | |
2013 | return snd_pcm_oss_get_ptr(pcm_oss_file, | |
2014 | cmd == SNDCTL_DSP_GETIPTR ? | |
2015 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2016 | (struct count_info __user *) arg); | |
2017 | case SNDCTL_DSP_MAPINBUF: | |
2018 | case SNDCTL_DSP_MAPOUTBUF: | |
2019 | return snd_pcm_oss_get_mapbuf(pcm_oss_file, | |
2020 | cmd == SNDCTL_DSP_MAPINBUF ? | |
2021 | SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, | |
2022 | (struct buffmem_desc __user *) arg); | |
2023 | case SNDCTL_DSP_SETSYNCRO: | |
2024 | /* stop DMA now.. */ | |
2025 | return 0; | |
2026 | case SNDCTL_DSP_SETDUPLEX: | |
2027 | if (snd_pcm_oss_get_caps(pcm_oss_file) & DSP_CAP_DUPLEX) | |
2028 | return 0; | |
2029 | return -EIO; | |
2030 | case SNDCTL_DSP_GETODELAY: | |
2031 | res = snd_pcm_oss_get_odelay(pcm_oss_file); | |
2032 | if (res < 0) { | |
2033 | /* it's for sure, some broken apps don't check for error codes */ | |
2034 | put_user(0, p); | |
2035 | return res; | |
2036 | } | |
2037 | return put_user(res, p); | |
2038 | case SNDCTL_DSP_PROFILE: | |
2039 | return 0; /* silently ignore */ | |
2040 | default: | |
2041 | snd_printd("pcm_oss: unknown command = 0x%x\n", cmd); | |
2042 | } | |
2043 | return -EINVAL; | |
2044 | } | |
2045 | ||
2046 | #ifdef CONFIG_COMPAT | |
2047 | /* all compatible */ | |
2048 | #define snd_pcm_oss_ioctl_compat snd_pcm_oss_ioctl | |
2049 | #else | |
2050 | #define snd_pcm_oss_ioctl_compat NULL | |
2051 | #endif | |
2052 | ||
2053 | static ssize_t snd_pcm_oss_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
2054 | { | |
6ac77bc1 TI |
2055 | struct snd_pcm_oss_file *pcm_oss_file; |
2056 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
2057 | |
2058 | pcm_oss_file = file->private_data; | |
2059 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2060 | if (substream == NULL) | |
2061 | return -ENXIO; | |
2062 | #ifndef OSS_DEBUG | |
2063 | return snd_pcm_oss_read1(substream, buf, count); | |
2064 | #else | |
2065 | { | |
2066 | ssize_t res = snd_pcm_oss_read1(substream, buf, count); | |
2067 | printk("pcm_oss: read %li bytes (returned %li bytes)\n", (long)count, (long)res); | |
2068 | return res; | |
2069 | } | |
2070 | #endif | |
2071 | } | |
2072 | ||
2073 | static ssize_t snd_pcm_oss_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) | |
2074 | { | |
6ac77bc1 TI |
2075 | struct snd_pcm_oss_file *pcm_oss_file; |
2076 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
2077 | long result; |
2078 | ||
2079 | pcm_oss_file = file->private_data; | |
2080 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2081 | if (substream == NULL) | |
2082 | return -ENXIO; | |
1da177e4 | 2083 | result = snd_pcm_oss_write1(substream, buf, count); |
1da177e4 LT |
2084 | #ifdef OSS_DEBUG |
2085 | printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result); | |
2086 | #endif | |
2087 | return result; | |
2088 | } | |
2089 | ||
6ac77bc1 | 2090 | static int snd_pcm_oss_playback_ready(struct snd_pcm_substream *substream) |
1da177e4 | 2091 | { |
6ac77bc1 | 2092 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2093 | if (atomic_read(&runtime->mmap_count)) |
2094 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; | |
2095 | else | |
2096 | return snd_pcm_playback_avail(runtime) >= runtime->oss.period_frames; | |
2097 | } | |
2098 | ||
6ac77bc1 | 2099 | static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream) |
1da177e4 | 2100 | { |
6ac77bc1 | 2101 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2102 | if (atomic_read(&runtime->mmap_count)) |
2103 | return runtime->oss.prev_hw_ptr_interrupt != runtime->hw_ptr_interrupt; | |
2104 | else | |
2105 | return snd_pcm_capture_avail(runtime) >= runtime->oss.period_frames; | |
2106 | } | |
2107 | ||
2108 | static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait) | |
2109 | { | |
6ac77bc1 | 2110 | struct snd_pcm_oss_file *pcm_oss_file; |
1da177e4 | 2111 | unsigned int mask; |
6ac77bc1 | 2112 | struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL; |
1da177e4 LT |
2113 | |
2114 | pcm_oss_file = file->private_data; | |
2115 | ||
2116 | psubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2117 | csubstream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2118 | ||
2119 | mask = 0; | |
2120 | if (psubstream != NULL) { | |
6ac77bc1 | 2121 | struct snd_pcm_runtime *runtime = psubstream->runtime; |
1da177e4 LT |
2122 | poll_wait(file, &runtime->sleep, wait); |
2123 | snd_pcm_stream_lock_irq(psubstream); | |
2124 | if (runtime->status->state != SNDRV_PCM_STATE_DRAINING && | |
2125 | (runtime->status->state != SNDRV_PCM_STATE_RUNNING || | |
2126 | snd_pcm_oss_playback_ready(psubstream))) | |
2127 | mask |= POLLOUT | POLLWRNORM; | |
2128 | snd_pcm_stream_unlock_irq(psubstream); | |
2129 | } | |
2130 | if (csubstream != NULL) { | |
6ac77bc1 TI |
2131 | struct snd_pcm_runtime *runtime = csubstream->runtime; |
2132 | snd_pcm_state_t ostate; | |
1da177e4 LT |
2133 | poll_wait(file, &runtime->sleep, wait); |
2134 | snd_pcm_stream_lock_irq(csubstream); | |
2135 | if ((ostate = runtime->status->state) != SNDRV_PCM_STATE_RUNNING || | |
2136 | snd_pcm_oss_capture_ready(csubstream)) | |
2137 | mask |= POLLIN | POLLRDNORM; | |
2138 | snd_pcm_stream_unlock_irq(csubstream); | |
2139 | if (ostate != SNDRV_PCM_STATE_RUNNING && runtime->oss.trigger) { | |
6ac77bc1 | 2140 | struct snd_pcm_oss_file ofile; |
1da177e4 LT |
2141 | memset(&ofile, 0, sizeof(ofile)); |
2142 | ofile.streams[SNDRV_PCM_STREAM_CAPTURE] = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2143 | runtime->oss.trigger = 0; | |
2144 | snd_pcm_oss_set_trigger(&ofile, PCM_ENABLE_INPUT); | |
2145 | } | |
2146 | } | |
2147 | ||
2148 | return mask; | |
2149 | } | |
2150 | ||
2151 | static int snd_pcm_oss_mmap(struct file *file, struct vm_area_struct *area) | |
2152 | { | |
6ac77bc1 TI |
2153 | struct snd_pcm_oss_file *pcm_oss_file; |
2154 | struct snd_pcm_substream *substream = NULL; | |
2155 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2156 | int err; |
2157 | ||
2158 | #ifdef OSS_DEBUG | |
2159 | printk("pcm_oss: mmap begin\n"); | |
2160 | #endif | |
2161 | pcm_oss_file = file->private_data; | |
2162 | switch ((area->vm_flags & (VM_READ | VM_WRITE))) { | |
2163 | case VM_READ | VM_WRITE: | |
2164 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2165 | if (substream) | |
2166 | break; | |
2167 | /* Fall through */ | |
2168 | case VM_READ: | |
2169 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE]; | |
2170 | break; | |
2171 | case VM_WRITE: | |
2172 | substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK]; | |
2173 | break; | |
2174 | default: | |
2175 | return -EINVAL; | |
2176 | } | |
2177 | /* set VM_READ access as well to fix memset() routines that do | |
2178 | reads before writes (to improve performance) */ | |
2179 | area->vm_flags |= VM_READ; | |
2180 | if (substream == NULL) | |
2181 | return -ENXIO; | |
2182 | runtime = substream->runtime; | |
2183 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP_VALID)) | |
2184 | return -EIO; | |
2185 | if (runtime->info & SNDRV_PCM_INFO_INTERLEAVED) | |
2186 | runtime->access = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
2187 | else | |
2188 | return -EIO; | |
2189 | ||
2190 | if (runtime->oss.params) { | |
2191 | if ((err = snd_pcm_oss_change_params(substream)) < 0) | |
2192 | return err; | |
2193 | } | |
21a3479a | 2194 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
1da177e4 LT |
2195 | if (runtime->oss.plugin_first != NULL) |
2196 | return -EIO; | |
21a3479a | 2197 | #endif |
1da177e4 LT |
2198 | |
2199 | if (area->vm_pgoff != 0) | |
2200 | return -EINVAL; | |
2201 | ||
2202 | err = snd_pcm_mmap_data(substream, file, area); | |
2203 | if (err < 0) | |
2204 | return err; | |
2205 | runtime->oss.mmap_bytes = area->vm_end - area->vm_start; | |
2206 | runtime->silence_threshold = 0; | |
2207 | runtime->silence_size = 0; | |
2208 | #ifdef OSS_DEBUG | |
2209 | printk("pcm_oss: mmap ok, bytes = 0x%x\n", runtime->oss.mmap_bytes); | |
2210 | #endif | |
2211 | /* In mmap mode we never stop */ | |
2212 | runtime->stop_threshold = runtime->boundary; | |
2213 | ||
2214 | return 0; | |
2215 | } | |
2216 | ||
04f141a8 | 2217 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
2218 | /* |
2219 | * /proc interface | |
2220 | */ | |
2221 | ||
6ac77bc1 TI |
2222 | static void snd_pcm_oss_proc_read(struct snd_info_entry *entry, |
2223 | struct snd_info_buffer *buffer) | |
1da177e4 | 2224 | { |
6ac77bc1 TI |
2225 | struct snd_pcm_str *pstr = entry->private_data; |
2226 | struct snd_pcm_oss_setup *setup = pstr->oss.setup_list; | |
1a60d4c5 | 2227 | mutex_lock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2228 | while (setup) { |
2229 | snd_iprintf(buffer, "%s %u %u%s%s%s%s%s%s\n", | |
2230 | setup->task_name, | |
2231 | setup->periods, | |
2232 | setup->period_size, | |
2233 | setup->disable ? " disable" : "", | |
2234 | setup->direct ? " direct" : "", | |
2235 | setup->block ? " block" : "", | |
2236 | setup->nonblock ? " non-block" : "", | |
2237 | setup->partialfrag ? " partial-frag" : "", | |
2238 | setup->nosilence ? " no-silence" : ""); | |
2239 | setup = setup->next; | |
2240 | } | |
1a60d4c5 | 2241 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2242 | } |
2243 | ||
6ac77bc1 | 2244 | static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr) |
1da177e4 | 2245 | { |
6ac77bc1 | 2246 | struct snd_pcm_oss_setup *setup, *setupn; |
1da177e4 | 2247 | |
1da177e4 LT |
2248 | for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL; |
2249 | setup; setup = setupn) { | |
2250 | setupn = setup->next; | |
2251 | kfree(setup->task_name); | |
2252 | kfree(setup); | |
2253 | } | |
2254 | pstr->oss.setup_list = NULL; | |
2255 | } | |
2256 | ||
6ac77bc1 TI |
2257 | static void snd_pcm_oss_proc_write(struct snd_info_entry *entry, |
2258 | struct snd_info_buffer *buffer) | |
1da177e4 | 2259 | { |
6ac77bc1 | 2260 | struct snd_pcm_str *pstr = entry->private_data; |
1da177e4 LT |
2261 | char line[128], str[32], task_name[32], *ptr; |
2262 | int idx1; | |
6ac77bc1 | 2263 | struct snd_pcm_oss_setup *setup, *setup1, template; |
1da177e4 LT |
2264 | |
2265 | while (!snd_info_get_line(buffer, line, sizeof(line))) { | |
1a60d4c5 | 2266 | mutex_lock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2267 | memset(&template, 0, sizeof(template)); |
2268 | ptr = snd_info_get_str(task_name, line, sizeof(task_name)); | |
2269 | if (!strcmp(task_name, "clear") || !strcmp(task_name, "erase")) { | |
2270 | snd_pcm_oss_proc_free_setup_list(pstr); | |
1a60d4c5 | 2271 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2272 | continue; |
2273 | } | |
2274 | for (setup = pstr->oss.setup_list; setup; setup = setup->next) { | |
2275 | if (!strcmp(setup->task_name, task_name)) { | |
2276 | template = *setup; | |
2277 | break; | |
2278 | } | |
2279 | } | |
2280 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2281 | template.periods = simple_strtoul(str, NULL, 10); | |
2282 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2283 | template.period_size = simple_strtoul(str, NULL, 10); | |
2284 | for (idx1 = 31; idx1 >= 0; idx1--) | |
2285 | if (template.period_size & (1 << idx1)) | |
2286 | break; | |
2287 | for (idx1--; idx1 >= 0; idx1--) | |
2288 | template.period_size &= ~(1 << idx1); | |
2289 | do { | |
2290 | ptr = snd_info_get_str(str, ptr, sizeof(str)); | |
2291 | if (!strcmp(str, "disable")) { | |
2292 | template.disable = 1; | |
2293 | } else if (!strcmp(str, "direct")) { | |
2294 | template.direct = 1; | |
2295 | } else if (!strcmp(str, "block")) { | |
2296 | template.block = 1; | |
2297 | } else if (!strcmp(str, "non-block")) { | |
2298 | template.nonblock = 1; | |
2299 | } else if (!strcmp(str, "partial-frag")) { | |
2300 | template.partialfrag = 1; | |
2301 | } else if (!strcmp(str, "no-silence")) { | |
2302 | template.nosilence = 1; | |
10f69f9e TI |
2303 | } else if (!strcmp(str, "buggy-ptr")) { |
2304 | template.buggyptr = 1; | |
1da177e4 LT |
2305 | } |
2306 | } while (*str); | |
2307 | if (setup == NULL) { | |
060d77b9 TI |
2308 | setup = kmalloc(sizeof(*setup), GFP_KERNEL); |
2309 | if (! setup) { | |
2310 | buffer->error = -ENOMEM; | |
2311 | mutex_lock(&pstr->oss.setup_mutex); | |
2312 | return; | |
2313 | } | |
2314 | if (pstr->oss.setup_list == NULL) | |
2315 | pstr->oss.setup_list = setup; | |
2316 | else { | |
2317 | for (setup1 = pstr->oss.setup_list; | |
2318 | setup1->next; setup1 = setup1->next); | |
2319 | setup1->next = setup; | |
2320 | } | |
2321 | template.task_name = kstrdup(task_name, GFP_KERNEL); | |
2322 | if (! template.task_name) { | |
2323 | kfree(setup); | |
1da177e4 | 2324 | buffer->error = -ENOMEM; |
060d77b9 TI |
2325 | mutex_lock(&pstr->oss.setup_mutex); |
2326 | return; | |
1da177e4 LT |
2327 | } |
2328 | } | |
060d77b9 | 2329 | *setup = template; |
1a60d4c5 | 2330 | mutex_unlock(&pstr->oss.setup_mutex); |
1da177e4 LT |
2331 | } |
2332 | } | |
2333 | ||
6ac77bc1 | 2334 | static void snd_pcm_oss_proc_init(struct snd_pcm *pcm) |
1da177e4 LT |
2335 | { |
2336 | int stream; | |
2337 | for (stream = 0; stream < 2; ++stream) { | |
6ac77bc1 TI |
2338 | struct snd_info_entry *entry; |
2339 | struct snd_pcm_str *pstr = &pcm->streams[stream]; | |
1da177e4 LT |
2340 | if (pstr->substream_count == 0) |
2341 | continue; | |
2342 | if ((entry = snd_info_create_card_entry(pcm->card, "oss", pstr->proc_root)) != NULL) { | |
2343 | entry->content = SNDRV_INFO_CONTENT_TEXT; | |
2344 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; | |
2345 | entry->c.text.read_size = 8192; | |
2346 | entry->c.text.read = snd_pcm_oss_proc_read; | |
2347 | entry->c.text.write_size = 8192; | |
2348 | entry->c.text.write = snd_pcm_oss_proc_write; | |
2349 | entry->private_data = pstr; | |
2350 | if (snd_info_register(entry) < 0) { | |
2351 | snd_info_free_entry(entry); | |
2352 | entry = NULL; | |
2353 | } | |
2354 | } | |
2355 | pstr->oss.proc_entry = entry; | |
2356 | } | |
2357 | } | |
2358 | ||
6ac77bc1 | 2359 | static void snd_pcm_oss_proc_done(struct snd_pcm *pcm) |
1da177e4 LT |
2360 | { |
2361 | int stream; | |
2362 | for (stream = 0; stream < 2; ++stream) { | |
6ac77bc1 | 2363 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
1da177e4 LT |
2364 | if (pstr->oss.proc_entry) { |
2365 | snd_info_unregister(pstr->oss.proc_entry); | |
2366 | pstr->oss.proc_entry = NULL; | |
2367 | snd_pcm_oss_proc_free_setup_list(pstr); | |
2368 | } | |
2369 | } | |
2370 | } | |
04f141a8 TI |
2371 | #else /* !CONFIG_PROC_FS */ |
2372 | #define snd_pcm_oss_proc_init(pcm) | |
2373 | #define snd_pcm_oss_proc_done(pcm) | |
2374 | #endif /* CONFIG_PROC_FS */ | |
1da177e4 LT |
2375 | |
2376 | /* | |
2377 | * ENTRY functions | |
2378 | */ | |
2379 | ||
2380 | static struct file_operations snd_pcm_oss_f_reg = | |
2381 | { | |
2382 | .owner = THIS_MODULE, | |
2383 | .read = snd_pcm_oss_read, | |
2384 | .write = snd_pcm_oss_write, | |
2385 | .open = snd_pcm_oss_open, | |
2386 | .release = snd_pcm_oss_release, | |
2387 | .poll = snd_pcm_oss_poll, | |
2388 | .unlocked_ioctl = snd_pcm_oss_ioctl, | |
2389 | .compat_ioctl = snd_pcm_oss_ioctl_compat, | |
2390 | .mmap = snd_pcm_oss_mmap, | |
2391 | }; | |
2392 | ||
6ac77bc1 | 2393 | static void register_oss_dsp(struct snd_pcm *pcm, int index) |
1da177e4 LT |
2394 | { |
2395 | char name[128]; | |
2396 | sprintf(name, "dsp%i%i", pcm->card->number, pcm->device); | |
2397 | if (snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2af677fc | 2398 | pcm->card, index, &snd_pcm_oss_f_reg, |
f87135f5 | 2399 | pcm, name) < 0) { |
d3d579f8 TI |
2400 | snd_printk(KERN_ERR "unable to register OSS PCM device %i:%i\n", |
2401 | pcm->card->number, pcm->device); | |
1da177e4 LT |
2402 | } |
2403 | } | |
2404 | ||
6ac77bc1 | 2405 | static int snd_pcm_oss_register_minor(struct snd_pcm *pcm) |
1da177e4 LT |
2406 | { |
2407 | pcm->oss.reg = 0; | |
2408 | if (dsp_map[pcm->card->number] == (int)pcm->device) { | |
2409 | char name[128]; | |
2410 | int duplex; | |
2411 | register_oss_dsp(pcm, 0); | |
2412 | duplex = (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count > 0 && | |
2413 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count && | |
2414 | !(pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX)); | |
2415 | sprintf(name, "%s%s", pcm->name, duplex ? " (DUPLEX)" : ""); | |
2416 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO | |
2417 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_AUDIO, | |
2418 | pcm->card->number, | |
2419 | name); | |
2420 | #endif | |
2421 | pcm->oss.reg++; | |
2422 | pcm->oss.reg_mask |= 1; | |
2423 | } | |
2424 | if (adsp_map[pcm->card->number] == (int)pcm->device) { | |
2425 | register_oss_dsp(pcm, 1); | |
2426 | pcm->oss.reg++; | |
2427 | pcm->oss.reg_mask |= 2; | |
2428 | } | |
2429 | ||
2430 | if (pcm->oss.reg) | |
2431 | snd_pcm_oss_proc_init(pcm); | |
2432 | ||
2433 | return 0; | |
2434 | } | |
2435 | ||
6ac77bc1 | 2436 | static int snd_pcm_oss_disconnect_minor(struct snd_pcm *pcm) |
1da177e4 LT |
2437 | { |
2438 | if (pcm->oss.reg) { | |
2439 | if (pcm->oss.reg_mask & 1) { | |
2440 | pcm->oss.reg_mask &= ~1; | |
2441 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2442 | pcm->card, 0); | |
2443 | } | |
2444 | if (pcm->oss.reg_mask & 2) { | |
2445 | pcm->oss.reg_mask &= ~2; | |
2446 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_PCM, | |
2447 | pcm->card, 1); | |
2448 | } | |
2449 | } | |
2450 | return 0; | |
2451 | } | |
2452 | ||
6ac77bc1 | 2453 | static int snd_pcm_oss_unregister_minor(struct snd_pcm *pcm) |
1da177e4 LT |
2454 | { |
2455 | snd_pcm_oss_disconnect_minor(pcm); | |
2456 | if (pcm->oss.reg) { | |
2457 | if (dsp_map[pcm->card->number] == (int)pcm->device) { | |
2458 | #ifdef SNDRV_OSS_INFO_DEV_AUDIO | |
2459 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_AUDIO, pcm->card->number); | |
2460 | #endif | |
2461 | } | |
2462 | pcm->oss.reg = 0; | |
2463 | snd_pcm_oss_proc_done(pcm); | |
2464 | } | |
2465 | return 0; | |
2466 | } | |
2467 | ||
6ac77bc1 | 2468 | static struct snd_pcm_notify snd_pcm_oss_notify = |
1da177e4 LT |
2469 | { |
2470 | .n_register = snd_pcm_oss_register_minor, | |
2471 | .n_disconnect = snd_pcm_oss_disconnect_minor, | |
2472 | .n_unregister = snd_pcm_oss_unregister_minor, | |
2473 | }; | |
2474 | ||
2475 | static int __init alsa_pcm_oss_init(void) | |
2476 | { | |
2477 | int i; | |
2478 | int err; | |
2479 | ||
2480 | /* check device map table */ | |
2481 | for (i = 0; i < SNDRV_CARDS; i++) { | |
2482 | if (dsp_map[i] < 0 || dsp_map[i] >= SNDRV_PCM_DEVICES) { | |
d3d579f8 TI |
2483 | snd_printk(KERN_ERR "invalid dsp_map[%d] = %d\n", |
2484 | i, dsp_map[i]); | |
1da177e4 LT |
2485 | dsp_map[i] = 0; |
2486 | } | |
2487 | if (adsp_map[i] < 0 || adsp_map[i] >= SNDRV_PCM_DEVICES) { | |
d3d579f8 TI |
2488 | snd_printk(KERN_ERR "invalid adsp_map[%d] = %d\n", |
2489 | i, adsp_map[i]); | |
1da177e4 LT |
2490 | adsp_map[i] = 1; |
2491 | } | |
2492 | } | |
2493 | if ((err = snd_pcm_notify(&snd_pcm_oss_notify, 0)) < 0) | |
2494 | return err; | |
2495 | return 0; | |
2496 | } | |
2497 | ||
2498 | static void __exit alsa_pcm_oss_exit(void) | |
2499 | { | |
2500 | snd_pcm_notify(&snd_pcm_oss_notify, 1); | |
2501 | } | |
2502 | ||
2503 | module_init(alsa_pcm_oss_init) | |
2504 | module_exit(alsa_pcm_oss_exit) |