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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / sound / isa / sb / sb16_main.c
blob0bbcd4714d28c12b8cf63d10d70045e3cd3cccd3
1 /*
2 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
3 * Routines for control of 16-bit SoundBlaster cards and clones
4 * Note: This is very ugly hardware which uses one 8-bit DMA channel and
5 * second 16-bit DMA channel. Unfortunately 8-bit DMA channel can't
6 * transfer 16-bit samples and 16-bit DMA channels can't transfer
7 * 8-bit samples. This make full duplex more complicated than
8 * can be... People, don't buy these soundcards for full 16-bit
9 * duplex!!!
10 * Note: 16-bit wide is assigned to first direction which made request.
11 * With full duplex - playback is preferred with abstract layer.
12 *
13 * Note: Some chip revisions have hardware bug. Changing capture
14 * channel from full-duplex 8bit DMA to 16bit DMA will block
15 * 16bit DMA transfers from DSP chip (capture) until 8bit transfer
16 * to DSP chip (playback) starts. This bug can be avoided with
17 * "16bit DMA Allocation" setting set to Playback or Capture.
18 *
19 *
20 * This program is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation; either version 2 of the License, or
23 * (at your option) any later version.
24 *
25 * This program is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * GNU General Public License for more details.
29 *
30 * You should have received a copy of the GNU General Public License
31 * along with this program; if not, write to the Free Software
32 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
33 *
34 */
35
36 #include <asm/io.h>
37 #include <asm/dma.h>
38 #include <linux/init.h>
39 #include <linux/time.h>
40 #include <linux/module.h>
41 #include <sound/core.h>
42 #include <sound/sb.h>
43 #include <sound/sb16_csp.h>
44 #include <sound/mpu401.h>
45 #include <sound/control.h>
46 #include <sound/info.h>
47
48 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
49 MODULE_DESCRIPTION("Routines for control of 16-bit SoundBlaster cards and clones");
50 MODULE_LICENSE("GPL");
51
52 #ifdef CONFIG_SND_SB16_CSP
53 static void snd_sb16_csp_playback_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
54 {
55 if (chip->hardware == SB_HW_16CSP) {
56 struct snd_sb_csp *csp = chip->csp;
57
58 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
59 /* manually loaded codec */
60 if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) &&
61 ((1U << runtime->format) == csp->acc_format)) {
62 /* Supported runtime PCM format for playback */
63 if (csp->ops.csp_use(csp) == 0) {
64 /* If CSP was successfully acquired */
65 goto __start_CSP;
66 }
67 } else if ((csp->mode & SNDRV_SB_CSP_MODE_QSOUND) && (csp->q_enabled)) {
68 /* QSound decoder is loaded and enabled */
69 if ((1 << runtime->format) & (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
70 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE)) {
71 /* Only for simple PCM formats */
72 if (csp->ops.csp_use(csp) == 0) {
73 /* If CSP was successfully acquired */
74 goto __start_CSP;
75 }
76 }
77 }
78 } else if (csp->ops.csp_use(csp) == 0) {
79 /* Acquire CSP and try to autoload hardware codec */
80 if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_WRITE)) {
81 /* Unsupported format, release CSP */
82 csp->ops.csp_unuse(csp);
83 } else {
84 __start_CSP:
85 /* Try to start CSP */
86 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_PLAYBACK_16) ?
87 SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT,
88 (runtime->channels > 1) ?
89 SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) {
90 /* Failed, release CSP */
91 csp->ops.csp_unuse(csp);
92 } else {
93 /* Success, CSP acquired and running */
94 chip->open = SNDRV_SB_CSP_MODE_DSP_WRITE;
95 }
96 }
97 }
98 }
99 }
100
101 static void snd_sb16_csp_capture_prepare(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
102 {
103 if (chip->hardware == SB_HW_16CSP) {
104 struct snd_sb_csp *csp = chip->csp;
105
106 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
107 /* manually loaded codec */
108 if ((csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) &&
109 ((1U << runtime->format) == csp->acc_format)) {
110 /* Supported runtime PCM format for capture */
111 if (csp->ops.csp_use(csp) == 0) {
112 /* If CSP was successfully acquired */
113 goto __start_CSP;
114 }
115 }
116 } else if (csp->ops.csp_use(csp) == 0) {
117 /* Acquire CSP and try to autoload hardware codec */
118 if (csp->ops.csp_autoload(csp, runtime->format, SNDRV_SB_CSP_MODE_DSP_READ)) {
119 /* Unsupported format, release CSP */
120 csp->ops.csp_unuse(csp);
121 } else {
122 __start_CSP:
123 /* Try to start CSP */
124 if (csp->ops.csp_start(csp, (chip->mode & SB_MODE_CAPTURE_16) ?
125 SNDRV_SB_CSP_SAMPLE_16BIT : SNDRV_SB_CSP_SAMPLE_8BIT,
126 (runtime->channels > 1) ?
127 SNDRV_SB_CSP_STEREO : SNDRV_SB_CSP_MONO)) {
128 /* Failed, release CSP */
129 csp->ops.csp_unuse(csp);
130 } else {
131 /* Success, CSP acquired and running */
132 chip->open = SNDRV_SB_CSP_MODE_DSP_READ;
133 }
134 }
135 }
136 }
137 }
138
139 static void snd_sb16_csp_update(struct snd_sb *chip)
140 {
141 if (chip->hardware == SB_HW_16CSP) {
142 struct snd_sb_csp *csp = chip->csp;
143
144 if (csp->qpos_changed) {
145 spin_lock(&chip->reg_lock);
146 csp->ops.csp_qsound_transfer (csp);
147 spin_unlock(&chip->reg_lock);
148 }
149 }
150 }
151
152 static void snd_sb16_csp_playback_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
153 {
154 /* CSP decoders (QSound excluded) support only 16bit transfers */
155 if (chip->hardware == SB_HW_16CSP) {
156 struct snd_sb_csp *csp = chip->csp;
157
158 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
159 /* manually loaded codec */
160 if (csp->mode & SNDRV_SB_CSP_MODE_DSP_WRITE) {
161 runtime->hw.formats |= csp->acc_format;
162 }
163 } else {
164 /* autoloaded codecs */
165 runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
166 SNDRV_PCM_FMTBIT_IMA_ADPCM;
167 }
168 }
169 }
170
171 static void snd_sb16_csp_playback_close(struct snd_sb *chip)
172 {
173 if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_WRITE)) {
174 struct snd_sb_csp *csp = chip->csp;
175
176 if (csp->ops.csp_stop(csp) == 0) {
177 csp->ops.csp_unuse(csp);
178 chip->open = 0;
179 }
180 }
181 }
182
183 static void snd_sb16_csp_capture_open(struct snd_sb *chip, struct snd_pcm_runtime *runtime)
184 {
185 /* CSP coders support only 16bit transfers */
186 if (chip->hardware == SB_HW_16CSP) {
187 struct snd_sb_csp *csp = chip->csp;
188
189 if (csp->running & SNDRV_SB_CSP_ST_LOADED) {
190 /* manually loaded codec */
191 if (csp->mode & SNDRV_SB_CSP_MODE_DSP_READ) {
192 runtime->hw.formats |= csp->acc_format;
193 }
194 } else {
195 /* autoloaded codecs */
196 runtime->hw.formats |= SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
197 SNDRV_PCM_FMTBIT_IMA_ADPCM;
198 }
199 }
200 }
201
202 static void snd_sb16_csp_capture_close(struct snd_sb *chip)
203 {
204 if ((chip->hardware == SB_HW_16CSP) && (chip->open == SNDRV_SB_CSP_MODE_DSP_READ)) {
205 struct snd_sb_csp *csp = chip->csp;
206
207 if (csp->ops.csp_stop(csp) == 0) {
208 csp->ops.csp_unuse(csp);
209 chip->open = 0;
210 }
211 }
212 }
213 #else
214 #define snd_sb16_csp_playback_prepare(chip, runtime) /*nop*/
215 #define snd_sb16_csp_capture_prepare(chip, runtime) /*nop*/
216 #define snd_sb16_csp_update(chip) /*nop*/
217 #define snd_sb16_csp_playback_open(chip, runtime) /*nop*/
218 #define snd_sb16_csp_playback_close(chip) /*nop*/
219 #define snd_sb16_csp_capture_open(chip, runtime) /*nop*/
220 #define snd_sb16_csp_capture_close(chip) /*nop*/
221 #endif
222
223
224 static void snd_sb16_setup_rate(struct snd_sb *chip,
225 unsigned short rate,
226 int channel)
227 {
228 unsigned long flags;
229
230 spin_lock_irqsave(&chip->reg_lock, flags);
231 if (chip->mode & (channel == SNDRV_PCM_STREAM_PLAYBACK ? SB_MODE_PLAYBACK_16 : SB_MODE_CAPTURE_16))
232 snd_sb_ack_16bit(chip);
233 else
234 snd_sb_ack_8bit(chip);
235 if (!(chip->mode & SB_RATE_LOCK)) {
236 chip->locked_rate = rate;
237 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_IN);
238 snd_sbdsp_command(chip, rate >> 8);
239 snd_sbdsp_command(chip, rate & 0xff);
240 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
241 snd_sbdsp_command(chip, rate >> 8);
242 snd_sbdsp_command(chip, rate & 0xff);
243 }
244 spin_unlock_irqrestore(&chip->reg_lock, flags);
245 }
246
247 static int snd_sb16_hw_params(struct snd_pcm_substream *substream,
248 struct snd_pcm_hw_params *hw_params)
249 {
250 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
251 }
252
253 static int snd_sb16_hw_free(struct snd_pcm_substream *substream)
254 {
255 snd_pcm_lib_free_pages(substream);
256 return 0;
257 }
258
259 static int snd_sb16_playback_prepare(struct snd_pcm_substream *substream)
260 {
261 unsigned long flags;
262 struct snd_sb *chip = snd_pcm_substream_chip(substream);
263 struct snd_pcm_runtime *runtime = substream->runtime;
264 unsigned char format;
265 unsigned int size, count, dma;
266
267 snd_sb16_csp_playback_prepare(chip, runtime);
268 if (snd_pcm_format_unsigned(runtime->format) > 0) {
269 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO;
270 } else {
271 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO;
272 }
273
274 snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_PLAYBACK);
275 size = chip->p_dma_size = snd_pcm_lib_buffer_bytes(substream);
276 dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16;
277 snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
278
279 count = snd_pcm_lib_period_bytes(substream);
280 spin_lock_irqsave(&chip->reg_lock, flags);
281 if (chip->mode & SB_MODE_PLAYBACK_16) {
282 count >>= 1;
283 count--;
284 snd_sbdsp_command(chip, SB_DSP4_OUT16_AI);
285 snd_sbdsp_command(chip, format);
286 snd_sbdsp_command(chip, count & 0xff);
287 snd_sbdsp_command(chip, count >> 8);
288 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
289 } else {
290 count--;
291 snd_sbdsp_command(chip, SB_DSP4_OUT8_AI);
292 snd_sbdsp_command(chip, format);
293 snd_sbdsp_command(chip, count & 0xff);
294 snd_sbdsp_command(chip, count >> 8);
295 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
296 }
297 spin_unlock_irqrestore(&chip->reg_lock, flags);
298 return 0;
299 }
300
301 static int snd_sb16_playback_trigger(struct snd_pcm_substream *substream,
302 int cmd)
303 {
304 struct snd_sb *chip = snd_pcm_substream_chip(substream);
305 int result = 0;
306
307 spin_lock(&chip->reg_lock);
308 switch (cmd) {
309 case SNDRV_PCM_TRIGGER_START:
310 case SNDRV_PCM_TRIGGER_RESUME:
311 chip->mode |= SB_RATE_LOCK_PLAYBACK;
312 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
313 break;
314 case SNDRV_PCM_TRIGGER_STOP:
315 case SNDRV_PCM_TRIGGER_SUSPEND:
316 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF);
317 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */
318 if (chip->mode & SB_RATE_LOCK_CAPTURE)
319 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
320 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
321 break;
322 default:
323 result = -EINVAL;
324 }
325 spin_unlock(&chip->reg_lock);
326 return result;
327 }
328
329 static int snd_sb16_capture_prepare(struct snd_pcm_substream *substream)
330 {
331 unsigned long flags;
332 struct snd_sb *chip = snd_pcm_substream_chip(substream);
333 struct snd_pcm_runtime *runtime = substream->runtime;
334 unsigned char format;
335 unsigned int size, count, dma;
336
337 snd_sb16_csp_capture_prepare(chip, runtime);
338 if (snd_pcm_format_unsigned(runtime->format) > 0) {
339 format = runtime->channels > 1 ? SB_DSP4_MODE_UNS_STEREO : SB_DSP4_MODE_UNS_MONO;
340 } else {
341 format = runtime->channels > 1 ? SB_DSP4_MODE_SIGN_STEREO : SB_DSP4_MODE_SIGN_MONO;
342 }
343 snd_sb16_setup_rate(chip, runtime->rate, SNDRV_PCM_STREAM_CAPTURE);
344 size = chip->c_dma_size = snd_pcm_lib_buffer_bytes(substream);
345 dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16;
346 snd_dma_program(dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
347
348 count = snd_pcm_lib_period_bytes(substream);
349 spin_lock_irqsave(&chip->reg_lock, flags);
350 if (chip->mode & SB_MODE_CAPTURE_16) {
351 count >>= 1;
352 count--;
353 snd_sbdsp_command(chip, SB_DSP4_IN16_AI);
354 snd_sbdsp_command(chip, format);
355 snd_sbdsp_command(chip, count & 0xff);
356 snd_sbdsp_command(chip, count >> 8);
357 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
358 } else {
359 count--;
360 snd_sbdsp_command(chip, SB_DSP4_IN8_AI);
361 snd_sbdsp_command(chip, format);
362 snd_sbdsp_command(chip, count & 0xff);
363 snd_sbdsp_command(chip, count >> 8);
364 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
365 }
366 spin_unlock_irqrestore(&chip->reg_lock, flags);
367 return 0;
368 }
369
370 static int snd_sb16_capture_trigger(struct snd_pcm_substream *substream,
371 int cmd)
372 {
373 struct snd_sb *chip = snd_pcm_substream_chip(substream);
374 int result = 0;
375
376 spin_lock(&chip->reg_lock);
377 switch (cmd) {
378 case SNDRV_PCM_TRIGGER_START:
379 case SNDRV_PCM_TRIGGER_RESUME:
380 chip->mode |= SB_RATE_LOCK_CAPTURE;
381 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
382 break;
383 case SNDRV_PCM_TRIGGER_STOP:
384 case SNDRV_PCM_TRIGGER_SUSPEND:
385 snd_sbdsp_command(chip, chip->mode & SB_MODE_CAPTURE_16 ? SB_DSP_DMA16_OFF : SB_DSP_DMA8_OFF);
386 /* next two lines are needed for some types of DSP4 (SB AWE 32 - 4.13) */
387 if (chip->mode & SB_RATE_LOCK_PLAYBACK)
388 snd_sbdsp_command(chip, chip->mode & SB_MODE_PLAYBACK_16 ? SB_DSP_DMA16_ON : SB_DSP_DMA8_ON);
389 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
390 break;
391 default:
392 result = -EINVAL;
393 }
394 spin_unlock(&chip->reg_lock);
395 return result;
396 }
397
398 irqreturn_t snd_sb16dsp_interrupt(int irq, void *dev_id)
399 {
400 struct snd_sb *chip = dev_id;
401 unsigned char status;
402 int ok;
403
404 spin_lock(&chip->mixer_lock);
405 status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
406 spin_unlock(&chip->mixer_lock);
407 if ((status & SB_IRQTYPE_MPUIN) && chip->rmidi_callback)
408 chip->rmidi_callback(irq, chip->rmidi->private_data);
409 if (status & SB_IRQTYPE_8BIT) {
410 ok = 0;
411 if (chip->mode & SB_MODE_PLAYBACK_8) {
412 snd_pcm_period_elapsed(chip->playback_substream);
413 snd_sb16_csp_update(chip);
414 ok++;
415 }
416 if (chip->mode & SB_MODE_CAPTURE_8) {
417 snd_pcm_period_elapsed(chip->capture_substream);
418 ok++;
419 }
420 spin_lock(&chip->reg_lock);
421 if (!ok)
422 snd_sbdsp_command(chip, SB_DSP_DMA8_OFF);
423 snd_sb_ack_8bit(chip);
424 spin_unlock(&chip->reg_lock);
425 }
426 if (status & SB_IRQTYPE_16BIT) {
427 ok = 0;
428 if (chip->mode & SB_MODE_PLAYBACK_16) {
429 snd_pcm_period_elapsed(chip->playback_substream);
430 snd_sb16_csp_update(chip);
431 ok++;
432 }
433 if (chip->mode & SB_MODE_CAPTURE_16) {
434 snd_pcm_period_elapsed(chip->capture_substream);
435 ok++;
436 }
437 spin_lock(&chip->reg_lock);
438 if (!ok)
439 snd_sbdsp_command(chip, SB_DSP_DMA16_OFF);
440 snd_sb_ack_16bit(chip);
441 spin_unlock(&chip->reg_lock);
442 }
443 return IRQ_HANDLED;
444 }
445
446 /*
447
448 */
449
450 static snd_pcm_uframes_t snd_sb16_playback_pointer(struct snd_pcm_substream *substream)
451 {
452 struct snd_sb *chip = snd_pcm_substream_chip(substream);
453 unsigned int dma;
454 size_t ptr;
455
456 dma = (chip->mode & SB_MODE_PLAYBACK_8) ? chip->dma8 : chip->dma16;
457 ptr = snd_dma_pointer(dma, chip->p_dma_size);
458 return bytes_to_frames(substream->runtime, ptr);
459 }
460
461 static snd_pcm_uframes_t snd_sb16_capture_pointer(struct snd_pcm_substream *substream)
462 {
463 struct snd_sb *chip = snd_pcm_substream_chip(substream);
464 unsigned int dma;
465 size_t ptr;
466
467 dma = (chip->mode & SB_MODE_CAPTURE_8) ? chip->dma8 : chip->dma16;
468 ptr = snd_dma_pointer(dma, chip->c_dma_size);
469 return bytes_to_frames(substream->runtime, ptr);
470 }
471
472 /*
473
474 */
475
476 static struct snd_pcm_hardware snd_sb16_playback =
477 {
478 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
479 SNDRV_PCM_INFO_MMAP_VALID),
480 .formats = 0,
481 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
482 .rate_min = 4000,
483 .rate_max = 44100,
484 .channels_min = 1,
485 .channels_max = 2,
486 .buffer_bytes_max = (128*1024),
487 .period_bytes_min = 64,
488 .period_bytes_max = (128*1024),
489 .periods_min = 1,
490 .periods_max = 1024,
491 .fifo_size = 0,
492 };
493
494 static struct snd_pcm_hardware snd_sb16_capture =
495 {
496 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
497 SNDRV_PCM_INFO_MMAP_VALID),
498 .formats = 0,
499 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
500 .rate_min = 4000,
501 .rate_max = 44100,
502 .channels_min = 1,
503 .channels_max = 2,
504 .buffer_bytes_max = (128*1024),
505 .period_bytes_min = 64,
506 .period_bytes_max = (128*1024),
507 .periods_min = 1,
508 .periods_max = 1024,
509 .fifo_size = 0,
510 };
511
512 /*
513 * open/close
514 */
515
516 static int snd_sb16_playback_open(struct snd_pcm_substream *substream)
517 {
518 unsigned long flags;
519 struct snd_sb *chip = snd_pcm_substream_chip(substream);
520 struct snd_pcm_runtime *runtime = substream->runtime;
521
522 spin_lock_irqsave(&chip->open_lock, flags);
523 if (chip->mode & SB_MODE_PLAYBACK) {
524 spin_unlock_irqrestore(&chip->open_lock, flags);
525 return -EAGAIN;
526 }
527 runtime->hw = snd_sb16_playback;
528
529 /* skip if 16 bit DMA was reserved for capture */
530 if (chip->force_mode16 & SB_MODE_CAPTURE_16)
531 goto __skip_16bit;
532
533 if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_CAPTURE_16)) {
534 chip->mode |= SB_MODE_PLAYBACK_16;
535 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
536 /* Vibra16X hack */
537 if (chip->dma16 <= 3) {
538 runtime->hw.buffer_bytes_max =
539 runtime->hw.period_bytes_max = 64 * 1024;
540 } else {
541 snd_sb16_csp_playback_open(chip, runtime);
542 }
543 goto __open_ok;
544 }
545
546 __skip_16bit:
547 if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_CAPTURE_8)) {
548 chip->mode |= SB_MODE_PLAYBACK_8;
549 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */
550 if (chip->dma16 < 0) {
551 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
552 chip->mode |= SB_MODE_PLAYBACK_16;
553 } else {
554 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8;
555 }
556 runtime->hw.buffer_bytes_max =
557 runtime->hw.period_bytes_max = 64 * 1024;
558 goto __open_ok;
559 }
560 spin_unlock_irqrestore(&chip->open_lock, flags);
561 return -EAGAIN;
562
563 __open_ok:
564 if (chip->hardware == SB_HW_ALS100)
565 runtime->hw.rate_max = 48000;
566 if (chip->hardware == SB_HW_CS5530) {
567 runtime->hw.buffer_bytes_max = 32 * 1024;
568 runtime->hw.periods_min = 2;
569 runtime->hw.rate_min = 44100;
570 }
571 if (chip->mode & SB_RATE_LOCK)
572 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate;
573 chip->playback_substream = substream;
574 spin_unlock_irqrestore(&chip->open_lock, flags);
575 return 0;
576 }
577
578 static int snd_sb16_playback_close(struct snd_pcm_substream *substream)
579 {
580 unsigned long flags;
581 struct snd_sb *chip = snd_pcm_substream_chip(substream);
582
583 snd_sb16_csp_playback_close(chip);
584 spin_lock_irqsave(&chip->open_lock, flags);
585 chip->playback_substream = NULL;
586 chip->mode &= ~SB_MODE_PLAYBACK;
587 spin_unlock_irqrestore(&chip->open_lock, flags);
588 return 0;
589 }
590
591 static int snd_sb16_capture_open(struct snd_pcm_substream *substream)
592 {
593 unsigned long flags;
594 struct snd_sb *chip = snd_pcm_substream_chip(substream);
595 struct snd_pcm_runtime *runtime = substream->runtime;
596
597 spin_lock_irqsave(&chip->open_lock, flags);
598 if (chip->mode & SB_MODE_CAPTURE) {
599 spin_unlock_irqrestore(&chip->open_lock, flags);
600 return -EAGAIN;
601 }
602 runtime->hw = snd_sb16_capture;
603
604 /* skip if 16 bit DMA was reserved for playback */
605 if (chip->force_mode16 & SB_MODE_PLAYBACK_16)
606 goto __skip_16bit;
607
608 if (chip->dma16 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_16)) {
609 chip->mode |= SB_MODE_CAPTURE_16;
610 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
611 /* Vibra16X hack */
612 if (chip->dma16 <= 3) {
613 runtime->hw.buffer_bytes_max =
614 runtime->hw.period_bytes_max = 64 * 1024;
615 } else {
616 snd_sb16_csp_capture_open(chip, runtime);
617 }
618 goto __open_ok;
619 }
620
621 __skip_16bit:
622 if (chip->dma8 >= 0 && !(chip->mode & SB_MODE_PLAYBACK_8)) {
623 chip->mode |= SB_MODE_CAPTURE_8;
624 /* DSP v 4.xx can transfer 16bit data through 8bit DMA channel, SBHWPG 2-7 */
625 if (chip->dma16 < 0) {
626 runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE;
627 chip->mode |= SB_MODE_CAPTURE_16;
628 } else {
629 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8;
630 }
631 runtime->hw.buffer_bytes_max =
632 runtime->hw.period_bytes_max = 64 * 1024;
633 goto __open_ok;
634 }
635 spin_unlock_irqrestore(&chip->open_lock, flags);
636 return -EAGAIN;
637
638 __open_ok:
639 if (chip->hardware == SB_HW_ALS100)
640 runtime->hw.rate_max = 48000;
641 if (chip->hardware == SB_HW_CS5530) {
642 runtime->hw.buffer_bytes_max = 32 * 1024;
643 runtime->hw.periods_min = 2;
644 runtime->hw.rate_min = 44100;
645 }
646 if (chip->mode & SB_RATE_LOCK)
647 runtime->hw.rate_min = runtime->hw.rate_max = chip->locked_rate;
648 chip->capture_substream = substream;
649 spin_unlock_irqrestore(&chip->open_lock, flags);
650 return 0;
651 }
652
653 static int snd_sb16_capture_close(struct snd_pcm_substream *substream)
654 {
655 unsigned long flags;
656 struct snd_sb *chip = snd_pcm_substream_chip(substream);
657
658 snd_sb16_csp_capture_close(chip);
659 spin_lock_irqsave(&chip->open_lock, flags);
660 chip->capture_substream = NULL;
661 chip->mode &= ~SB_MODE_CAPTURE;
662 spin_unlock_irqrestore(&chip->open_lock, flags);
663 return 0;
664 }
665
666 /*
667 * DMA control interface
668 */
669
670 static int snd_sb16_set_dma_mode(struct snd_sb *chip, int what)
671 {
672 if (chip->dma8 < 0 || chip->dma16 < 0) {
673 if (snd_BUG_ON(what))
674 return -EINVAL;
675 return 0;
676 }
677 if (what == 0) {
678 chip->force_mode16 = 0;
679 } else if (what == 1) {
680 chip->force_mode16 = SB_MODE_PLAYBACK_16;
681 } else if (what == 2) {
682 chip->force_mode16 = SB_MODE_CAPTURE_16;
683 } else {
684 return -EINVAL;
685 }
686 return 0;
687 }
688
689 static int snd_sb16_get_dma_mode(struct snd_sb *chip)
690 {
691 if (chip->dma8 < 0 || chip->dma16 < 0)
692 return 0;
693 switch (chip->force_mode16) {
694 case SB_MODE_PLAYBACK_16:
695 return 1;
696 case SB_MODE_CAPTURE_16:
697 return 2;
698 default:
699 return 0;
700 }
701 }
702
703 static int snd_sb16_dma_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
704 {
705 static char *texts[3] = {
706 "Auto", "Playback", "Capture"
707 };
708
709 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
710 uinfo->count = 1;
711 uinfo->value.enumerated.items = 3;
712 if (uinfo->value.enumerated.item > 2)
713 uinfo->value.enumerated.item = 2;
714 strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
715 return 0;
716 }
717
718 static int snd_sb16_dma_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
719 {
720 struct snd_sb *chip = snd_kcontrol_chip(kcontrol);
721 unsigned long flags;
722
723 spin_lock_irqsave(&chip->reg_lock, flags);
724 ucontrol->value.enumerated.item[0] = snd_sb16_get_dma_mode(chip);
725 spin_unlock_irqrestore(&chip->reg_lock, flags);
726 return 0;
727 }
728
729 static int snd_sb16_dma_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
730 {
731 struct snd_sb *chip = snd_kcontrol_chip(kcontrol);
732 unsigned long flags;
733 unsigned char nval, oval;
734 int change;
735
736 if ((nval = ucontrol->value.enumerated.item[0]) > 2)
737 return -EINVAL;
738 spin_lock_irqsave(&chip->reg_lock, flags);
739 oval = snd_sb16_get_dma_mode(chip);
740 change = nval != oval;
741 snd_sb16_set_dma_mode(chip, nval);
742 spin_unlock_irqrestore(&chip->reg_lock, flags);
743 return change;
744 }
745
746 static struct snd_kcontrol_new snd_sb16_dma_control = {
747 .iface = SNDRV_CTL_ELEM_IFACE_CARD,
748 .name = "16-bit DMA Allocation",
749 .info = snd_sb16_dma_control_info,
750 .get = snd_sb16_dma_control_get,
751 .put = snd_sb16_dma_control_put
752 };
753
754 /*
755 * Initialization part
756 */
757
758 int snd_sb16dsp_configure(struct snd_sb * chip)
759 {
760 unsigned long flags;
761 unsigned char irqreg = 0, dmareg = 0, mpureg;
762 unsigned char realirq, realdma, realmpureg;
763 /* note: mpu register should be present only on SB16 Vibra soundcards */
764
765 // printk(KERN_DEBUG "codec->irq=%i, codec->dma8=%i, codec->dma16=%i\n", chip->irq, chip->dma8, chip->dma16);
766 spin_lock_irqsave(&chip->mixer_lock, flags);
767 mpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP) & ~0x06;
768 spin_unlock_irqrestore(&chip->mixer_lock, flags);
769 switch (chip->irq) {
770 case 2:
771 case 9:
772 irqreg |= SB_IRQSETUP_IRQ9;
773 break;
774 case 5:
775 irqreg |= SB_IRQSETUP_IRQ5;
776 break;
777 case 7:
778 irqreg |= SB_IRQSETUP_IRQ7;
779 break;
780 case 10:
781 irqreg |= SB_IRQSETUP_IRQ10;
782 break;
783 default:
784 return -EINVAL;
785 }
786 if (chip->dma8 >= 0) {
787 switch (chip->dma8) {
788 case 0:
789 dmareg |= SB_DMASETUP_DMA0;
790 break;
791 case 1:
792 dmareg |= SB_DMASETUP_DMA1;
793 break;
794 case 3:
795 dmareg |= SB_DMASETUP_DMA3;
796 break;
797 default:
798 return -EINVAL;
799 }
800 }
801 if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) {
802 switch (chip->dma16) {
803 case 5:
804 dmareg |= SB_DMASETUP_DMA5;
805 break;
806 case 6:
807 dmareg |= SB_DMASETUP_DMA6;
808 break;
809 case 7:
810 dmareg |= SB_DMASETUP_DMA7;
811 break;
812 default:
813 return -EINVAL;
814 }
815 }
816 switch (chip->mpu_port) {
817 case 0x300:
818 mpureg |= 0x04;
819 break;
820 case 0x330:
821 mpureg |= 0x00;
822 break;
823 default:
824 mpureg |= 0x02; /* disable MPU */
825 }
826 spin_lock_irqsave(&chip->mixer_lock, flags);
827
828 snd_sbmixer_write(chip, SB_DSP4_IRQSETUP, irqreg);
829 realirq = snd_sbmixer_read(chip, SB_DSP4_IRQSETUP);
830
831 snd_sbmixer_write(chip, SB_DSP4_DMASETUP, dmareg);
832 realdma = snd_sbmixer_read(chip, SB_DSP4_DMASETUP);
833
834 snd_sbmixer_write(chip, SB_DSP4_MPUSETUP, mpureg);
835 realmpureg = snd_sbmixer_read(chip, SB_DSP4_MPUSETUP);
836
837 spin_unlock_irqrestore(&chip->mixer_lock, flags);
838 if ((~realirq) & irqreg || (~realdma) & dmareg) {
839 snd_printk(KERN_ERR "SB16 [0x%lx]: unable to set DMA & IRQ (PnP device?)\n", chip->port);
840 snd_printk(KERN_ERR "SB16 [0x%lx]: wanted: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, realirq, realdma, realmpureg);
841 snd_printk(KERN_ERR "SB16 [0x%lx]: got: irqreg=0x%x, dmareg=0x%x, mpureg = 0x%x\n", chip->port, irqreg, dmareg, mpureg);
842 return -ENODEV;
843 }
844 return 0;
845 }
846
847 static struct snd_pcm_ops snd_sb16_playback_ops = {
848 .open = snd_sb16_playback_open,
849 .close = snd_sb16_playback_close,
850 .ioctl = snd_pcm_lib_ioctl,
851 .hw_params = snd_sb16_hw_params,
852 .hw_free = snd_sb16_hw_free,
853 .prepare = snd_sb16_playback_prepare,
854 .trigger = snd_sb16_playback_trigger,
855 .pointer = snd_sb16_playback_pointer,
856 };
857
858 static struct snd_pcm_ops snd_sb16_capture_ops = {
859 .open = snd_sb16_capture_open,
860 .close = snd_sb16_capture_close,
861 .ioctl = snd_pcm_lib_ioctl,
862 .hw_params = snd_sb16_hw_params,
863 .hw_free = snd_sb16_hw_free,
864 .prepare = snd_sb16_capture_prepare,
865 .trigger = snd_sb16_capture_trigger,
866 .pointer = snd_sb16_capture_pointer,
867 };
868
869 int snd_sb16dsp_pcm(struct snd_sb * chip, int device, struct snd_pcm ** rpcm)
870 {
871 struct snd_card *card = chip->card;
872 struct snd_pcm *pcm;
873 int err;
874
875 if (rpcm)
876 *rpcm = NULL;
877 if ((err = snd_pcm_new(card, "SB16 DSP", device, 1, 1, &pcm)) < 0)
878 return err;
879 sprintf(pcm->name, "DSP v%i.%i", chip->version >> 8, chip->version & 0xff);
880 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
881 pcm->private_data = chip;
882
883 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb16_playback_ops);
884 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb16_capture_ops);
885
886 if (chip->dma16 >= 0 && chip->dma8 != chip->dma16)
887 snd_ctl_add(card, snd_ctl_new1(&snd_sb16_dma_control, chip));
888 else
889 pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
890
891 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
892 snd_dma_isa_data(),
893 64*1024, 128*1024);
894
895 if (rpcm)
896 *rpcm = pcm;
897 return 0;
898 }
899
900 const struct snd_pcm_ops *snd_sb16dsp_get_pcm_ops(int direction)
901 {
902 return direction == SNDRV_PCM_STREAM_PLAYBACK ?
903 &snd_sb16_playback_ops : &snd_sb16_capture_ops;
904 }
905
906 EXPORT_SYMBOL(snd_sb16dsp_pcm);
907 EXPORT_SYMBOL(snd_sb16dsp_get_pcm_ops);
908 EXPORT_SYMBOL(snd_sb16dsp_configure);
909 EXPORT_SYMBOL(snd_sb16dsp_interrupt);
910
911 /*
912 * INIT part
913 */
914
915 static int __init alsa_sb16_init(void)
916 {
917 return 0;
918 }
919
920 static void __exit alsa_sb16_exit(void)
921 {
922 }
923
924 module_init(alsa_sb16_init)
925 module_exit(alsa_sb16_exit)