source: GPL/trunk/alsa-kernel/pci/sis7019.c@ 587

Last change on this file since 587 was 587, checked in by David Azarewicz, 9 years ago

Rearrange directory structure
rework makefiles
cleanup files
File size: 40.1 KB
Line 
1/*
2 * Driver for SiS7019 Audio Accelerator
3 *
4 * Copyright (C) 2004-2007, David Dillow
5 * Written by David Dillow <dave@thedillows.org>
6 * Inspired by the Trident 4D-WaveDX/NX driver.
7 *
8 * All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, version 2.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24#include <linux/init.h>
25#include <linux/pci.h>
26#include <linux/time.h>
27#include <linux/slab.h>
28#include <linux/module.h>
29#include <linux/interrupt.h>
30#include <linux/delay.h>
31#include <sound/core.h>
32#include <sound/ac97_codec.h>
33#include <sound/initval.h>
34#include "sis7019.h"
35
36MODULE_AUTHOR("David Dillow <dave@thedillows.org>");
37MODULE_DESCRIPTION("SiS7019");
38MODULE_LICENSE("GPL");
39MODULE_SUPPORTED_DEVICE("{{SiS,SiS7019 Audio Accelerator}}");
40
41static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */
42static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
43static bool enable = 1;
44static int codecs = 1;
45
46module_param(index, int, 0444);
47MODULE_PARM_DESC(index, "Index value for SiS7019 Audio Accelerator.");
48module_param(id, charp, 0444);
49MODULE_PARM_DESC(id, "ID string for SiS7019 Audio Accelerator.");
50module_param(enable, bool, 0444);
51MODULE_PARM_DESC(enable, "Enable SiS7019 Audio Accelerator.");
52module_param(codecs, int, 0444);
53MODULE_PARM_DESC(codecs, "Set bit to indicate that codec number is expected to be present (default 1)");
54
55static DEFINE_PCI_DEVICE_TABLE(snd_sis7019_ids) = {
56 { PCI_DEVICE(PCI_VENDOR_ID_SI, 0x7019) },
57 { 0, }
58};
59
60MODULE_DEVICE_TABLE(pci, snd_sis7019_ids);
61
62/* There are three timing modes for the voices.
63 *
64 * For both playback and capture, when the buffer is one or two periods long,
65 * we use the hardware's built-in Mid-Loop Interrupt and End-Loop Interrupt
66 * to let us know when the periods have ended.
67 *
68 * When performing playback with more than two periods per buffer, we set
69 * the "Stop Sample Offset" and tell the hardware to interrupt us when we
70 * reach it. We then update the offset and continue on until we are
71 * interrupted for the next period.
72 *
73 * Capture channels do not have a SSO, so we allocate a playback channel to
74 * use as a timer for the capture periods. We use the SSO on the playback
75 * channel to clock out virtual periods, and adjust the virtual period length
76 * to maintain synchronization. This algorithm came from the Trident driver.
77 *
78 * FIXME: It'd be nice to make use of some of the synth features in the
79 * hardware, but a woeful lack of documentation is a significant roadblock.
80 */
81struct voice {
82 u16 flags;
83#define VOICE_IN_USE 1
84#define VOICE_CAPTURE 2
85#define VOICE_SSO_TIMING 4
86#define VOICE_SYNC_TIMING 8
87 u16 sync_cso;
88 u16 period_size;
89 u16 buffer_size;
90 u16 sync_period_size;
91 u16 sync_buffer_size;
92 u32 sso;
93 u32 vperiod;
94 struct snd_pcm_substream *substream;
95 struct voice *timing;
96 void __iomem *ctrl_base;
97 void __iomem *wave_base;
98 void __iomem *sync_base;
99 int num;
100};
101
102/* We need four pages to store our wave parameters during a suspend. If
103 * we're not doing power management, we still need to allocate a page
104 * for the silence buffer.
105 */
106#ifdef CONFIG_PM
107#define SIS_SUSPEND_PAGES 4
108#else
109#define SIS_SUSPEND_PAGES 1
110#endif
111
112struct sis7019 {
113 unsigned long ioport;
114 void __iomem *ioaddr;
115 int irq;
116 int codecs_present;
117
118 struct pci_dev *pci;
119 struct snd_pcm *pcm;
120 struct snd_card *card;
121 struct snd_ac97 *ac97[3];
122
123 /* Protect against more than one thread hitting the AC97
124 * registers (in a more polite manner than pounding the hardware
125 * semaphore)
126 */
127 struct mutex ac97_mutex;
128
129 /* voice_lock protects allocation/freeing of the voice descriptions
130 */
131 spinlock_t voice_lock;
132
133 struct voice voices[64];
134 struct voice capture_voice;
135
136 /* Allocate pages to store the internal wave state during
137 * suspends. When we're operating, this can be used as a silence
138 * buffer for a timing channel.
139 */
140 void *suspend_state[SIS_SUSPEND_PAGES];
141
142 int silence_users;
143 dma_addr_t silence_dma_addr;
144};
145
146/* These values are also used by the module param 'codecs' to indicate
147 * which codecs should be present.
148 */
149#define SIS_PRIMARY_CODEC_PRESENT 0x0001
150#define SIS_SECONDARY_CODEC_PRESENT 0x0002
151#define SIS_TERTIARY_CODEC_PRESENT 0x0004
152
153/* The HW offset parameters (Loop End, Stop Sample, End Sample) have a
154 * documented range of 8-0xfff8 samples. Given that they are 0-based,
155 * that places our period/buffer range at 9-0xfff9 samples. That makes the
156 * max buffer size 0xfff9 samples * 2 channels * 2 bytes per sample, and
157 * max samples / min samples gives us the max periods in a buffer.
158 *
159 * We'll add a constraint upon open that limits the period and buffer sample
160 * size to values that are legal for the hardware.
161 */
162static struct snd_pcm_hardware sis_playback_hw_info = {
163 .info = (SNDRV_PCM_INFO_MMAP |
164 SNDRV_PCM_INFO_MMAP_VALID |
165 SNDRV_PCM_INFO_INTERLEAVED |
166 SNDRV_PCM_INFO_BLOCK_TRANSFER |
167 SNDRV_PCM_INFO_SYNC_START |
168 SNDRV_PCM_INFO_RESUME),
169 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
170 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
171 .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_CONTINUOUS,
172 .rate_min = 4000,
173 .rate_max = 48000,
174 .channels_min = 1,
175 .channels_max = 2,
176 .buffer_bytes_max = (0xfff9 * 4),
177 .period_bytes_min = 9,
178 .period_bytes_max = (0xfff9 * 4),
179 .periods_min = 1,
180 .periods_max = (0xfff9 / 9),
181};
182
183static struct snd_pcm_hardware sis_capture_hw_info = {
184 .info = (SNDRV_PCM_INFO_MMAP |
185 SNDRV_PCM_INFO_MMAP_VALID |
186 SNDRV_PCM_INFO_INTERLEAVED |
187 SNDRV_PCM_INFO_BLOCK_TRANSFER |
188 SNDRV_PCM_INFO_SYNC_START |
189 SNDRV_PCM_INFO_RESUME),
190 .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
191 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
192 .rates = SNDRV_PCM_RATE_48000,
193 .rate_min = 4000,
194 .rate_max = 48000,
195 .channels_min = 1,
196 .channels_max = 2,
197 .buffer_bytes_max = (0xfff9 * 4),
198 .period_bytes_min = 9,
199 .period_bytes_max = (0xfff9 * 4),
200 .periods_min = 1,
201 .periods_max = (0xfff9 / 9),
202};
203
204static void sis_update_sso(struct voice *voice, u16 period)
205{
206 void __iomem *base = voice->ctrl_base;
207
208 voice->sso += period;
209 if (voice->sso >= voice->buffer_size)
210 voice->sso -= voice->buffer_size;
211
212 /* Enforce the documented hardware minimum offset */
213 if (voice->sso < 8)
214 voice->sso = 8;
215
216 /* The SSO is in the upper 16 bits of the register. */
217 writew(voice->sso & 0xffff, base + SIS_PLAY_DMA_SSO_ESO + 2);
218}
219
220static void sis_update_voice(struct voice *voice)
221{
222 if (voice->flags & VOICE_SSO_TIMING) {
223 sis_update_sso(voice, voice->period_size);
224 } else if (voice->flags & VOICE_SYNC_TIMING) {
225 int sync;
226
227 /* If we've not hit the end of the virtual period, update
228 * our records and keep going.
229 */
230 if (voice->vperiod > voice->period_size) {
231 voice->vperiod -= voice->period_size;
232 if (voice->vperiod < voice->period_size)
233 sis_update_sso(voice, voice->vperiod);
234 else
235 sis_update_sso(voice, voice->period_size);
236 return;
237 }
238
239 /* Calculate our relative offset between the target and
240 * the actual CSO value. Since we're operating in a loop,
241 * if the value is more than half way around, we can
242 * consider ourselves wrapped.
243 */
244 sync = voice->sync_cso;
245 sync -= readw(voice->sync_base + SIS_CAPTURE_DMA_FORMAT_CSO);
246 if (sync > (voice->sync_buffer_size / 2))
247 sync -= voice->sync_buffer_size;
248
249 /* If sync is positive, then we interrupted too early, and
250 * we'll need to come back in a few samples and try again.
251 * There's a minimum wait, as it takes some time for the DMA
252 * engine to startup, etc...
253 */
254 if (sync > 0) {
255 if (sync < 16)
256 sync = 16;
257 sis_update_sso(voice, sync);
258 return;
259 }
260
261 /* Ok, we interrupted right on time, or (hopefully) just
262 * a bit late. We'll adjst our next waiting period based
263 * on how close we got.
264 *
265 * We need to stay just behind the actual channel to ensure
266 * it really is past a period when we get our interrupt --
267 * otherwise we'll fall into the early code above and have
268 * a minimum wait time, which makes us quite late here,
269 * eating into the user's time to refresh the buffer, esp.
270 * if using small periods.
271 *
272 * If we're less than 9 samples behind, we're on target.
273 * Otherwise, shorten the next vperiod by the amount we've
274 * been delayed.
275 */
276 if (sync > -9)
277 voice->vperiod = voice->sync_period_size + 1;
278 else
279 voice->vperiod = voice->sync_period_size + sync + 10;
280
281 if (voice->vperiod < voice->buffer_size) {
282 sis_update_sso(voice, voice->vperiod);
283 voice->vperiod = 0;
284 } else
285 sis_update_sso(voice, voice->period_size);
286
287 sync = voice->sync_cso + voice->sync_period_size;
288 if (sync >= voice->sync_buffer_size)
289 sync -= voice->sync_buffer_size;
290 voice->sync_cso = sync;
291 }
292
293 snd_pcm_period_elapsed(voice->substream);
294}
295
296static void sis_voice_irq(u32 status, struct voice *voice)
297{
298 int bit;
299
300 while (status) {
301 bit = __ffs(status);
302 status >>= bit + 1;
303 voice += bit;
304 sis_update_voice(voice);
305 voice++;
306 }
307}
308
309static irqreturn_t sis_interrupt(int irq, void *dev)
310{
311 struct sis7019 *sis = dev;
312 unsigned long io = sis->ioport;
313 struct voice *voice;
314 u32 intr, status;
315
316 /* We only use the DMA interrupts, and we don't enable any other
317 * source of interrupts. But, it is possible to see an interrupt
318 * status that didn't actually interrupt us, so eliminate anything
319 * we're not expecting to avoid falsely claiming an IRQ, and an
320 * ensuing endless loop.
321 */
322 intr = inl(io + SIS_GISR);
323 intr &= SIS_GISR_AUDIO_PLAY_DMA_IRQ_STATUS |
324 SIS_GISR_AUDIO_RECORD_DMA_IRQ_STATUS;
325 if (!intr)
326 return IRQ_NONE;
327
328 do {
329 status = inl(io + SIS_PISR_A);
330 if (status) {
331 sis_voice_irq(status, sis->voices);
332 outl(status, io + SIS_PISR_A);
333 }
334
335 status = inl(io + SIS_PISR_B);
336 if (status) {
337 sis_voice_irq(status, &sis->voices[32]);
338 outl(status, io + SIS_PISR_B);
339 }
340
341 status = inl(io + SIS_RISR);
342 if (status) {
343 voice = &sis->capture_voice;
344 if (!voice->timing)
345 snd_pcm_period_elapsed(voice->substream);
346
347 outl(status, io + SIS_RISR);
348 }
349
350 outl(intr, io + SIS_GISR);
351 intr = inl(io + SIS_GISR);
352 intr &= SIS_GISR_AUDIO_PLAY_DMA_IRQ_STATUS |
353 SIS_GISR_AUDIO_RECORD_DMA_IRQ_STATUS;
354 } while (intr);
355
356 return IRQ_HANDLED;
357}
358
359static u32 sis_rate_to_delta(unsigned int rate)
360{
361 u32 delta;
362
363 /* This was copied from the trident driver, but it seems its gotten
364 * around a bit... nevertheless, it works well.
365 *
366 * We special case 44100 and 8000 since rounding with the equation
367 * does not give us an accurate enough value. For 11025 and 22050
368 * the equation gives us the best answer. All other frequencies will
369 * also use the equation. JDW
370 */
371 if (rate == 44100)
372 delta = 0xeb3;
373 else if (rate == 8000)
374 delta = 0x2ab;
375 else if (rate == 48000)
376 delta = 0x1000;
377 else
378 delta = (((rate << 12) + 24000) / 48000) & 0x0000ffff;
379 return delta;
380}
381
382static void __sis_map_silence(struct sis7019 *sis)
383{
384 /* Helper function: must hold sis->voice_lock on entry */
385 if (!sis->silence_users)
386 sis->silence_dma_addr = pci_map_single(sis->pci,
387 sis->suspend_state[0],
388 4096, PCI_DMA_TODEVICE);
389 sis->silence_users++;
390}
391
392static void __sis_unmap_silence(struct sis7019 *sis)
393{
394 /* Helper function: must hold sis->voice_lock on entry */
395 sis->silence_users--;
396 if (!sis->silence_users)
397 pci_unmap_single(sis->pci, sis->silence_dma_addr, 4096,
398 PCI_DMA_TODEVICE);
399}
400
401static void sis_free_voice(struct sis7019 *sis, struct voice *voice)
402{
403 unsigned long flags;
404
405 spin_lock_irqsave(&sis->voice_lock, flags);
406 if (voice->timing) {
407 __sis_unmap_silence(sis);
408 voice->timing->flags &= ~(VOICE_IN_USE | VOICE_SSO_TIMING |
409 VOICE_SYNC_TIMING);
410 voice->timing = NULL;
411 }
412 voice->flags &= ~(VOICE_IN_USE | VOICE_SSO_TIMING | VOICE_SYNC_TIMING);
413 spin_unlock_irqrestore(&sis->voice_lock, flags);
414}
415
416static struct voice *__sis_alloc_playback_voice(struct sis7019 *sis)
417{
418 /* Must hold the voice_lock on entry */
419 struct voice *voice;
420 int i;
421
422 for (i = 0; i < 64; i++) {
423 voice = &sis->voices[i];
424 if (voice->flags & VOICE_IN_USE)
425 continue;
426 voice->flags |= VOICE_IN_USE;
427 goto found_one;
428 }
429 voice = NULL;
430
431found_one:
432 return voice;
433}
434
435static struct voice *sis_alloc_playback_voice(struct sis7019 *sis)
436{
437 struct voice *voice;
438 unsigned long flags;
439
440 spin_lock_irqsave(&sis->voice_lock, flags);
441 voice = __sis_alloc_playback_voice(sis);
442 spin_unlock_irqrestore(&sis->voice_lock, flags);
443
444 return voice;
445}
446
447static int sis_alloc_timing_voice(struct snd_pcm_substream *substream,
448 struct snd_pcm_hw_params *hw_params)
449{
450 struct sis7019 *sis = snd_pcm_substream_chip(substream);
451 struct snd_pcm_runtime *runtime = substream->runtime;
452 struct voice *voice = runtime->private_data;
453 unsigned int period_size, buffer_size;
454 unsigned long flags;
455 int needed;
456
457 /* If there are one or two periods per buffer, we don't need a
458 * timing voice, as we can use the capture channel's interrupts
459 * to clock out the periods.
460 */
461 period_size = params_period_size(hw_params);
462 buffer_size = params_buffer_size(hw_params);
463 needed = (period_size != buffer_size &&
464 period_size != (buffer_size / 2));
465
466 if (needed && !voice->timing) {
467 spin_lock_irqsave(&sis->voice_lock, flags);
468 voice->timing = __sis_alloc_playback_voice(sis);
469 if (voice->timing)
470 __sis_map_silence(sis);
471 spin_unlock_irqrestore(&sis->voice_lock, flags);
472 if (!voice->timing)
473 return -ENOMEM;
474 voice->timing->substream = substream;
475 } else if (!needed && voice->timing) {
476 sis_free_voice(sis, voice);
477 voice->timing = NULL;
478 }
479
480 return 0;
481}
482
483static int sis_playback_open(struct snd_pcm_substream *substream)
484{
485 struct sis7019 *sis = snd_pcm_substream_chip(substream);
486 struct snd_pcm_runtime *runtime = substream->runtime;
487 struct voice *voice;
488
489 voice = sis_alloc_playback_voice(sis);
490 if (!voice)
491 return -EAGAIN;
492
493 voice->substream = substream;
494 runtime->private_data = voice;
495 runtime->hw = sis_playback_hw_info;
496 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
497 9, 0xfff9);
498 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
499 9, 0xfff9);
500 snd_pcm_set_sync(substream);
501 return 0;
502}
503
504static int sis_substream_close(struct snd_pcm_substream *substream)
505{
506 struct sis7019 *sis = snd_pcm_substream_chip(substream);
507 struct snd_pcm_runtime *runtime = substream->runtime;
508 struct voice *voice = runtime->private_data;
509
510 sis_free_voice(sis, voice);
511 return 0;
512}
513
514static int sis_playback_hw_params(struct snd_pcm_substream *substream,
515 struct snd_pcm_hw_params *hw_params)
516{
517 return snd_pcm_lib_malloc_pages(substream,
518 params_buffer_bytes(hw_params));
519}
520
521static int sis_hw_free(struct snd_pcm_substream *substream)
522{
523 return snd_pcm_lib_free_pages(substream);
524}
525
526static int sis_pcm_playback_prepare(struct snd_pcm_substream *substream)
527{
528 struct snd_pcm_runtime *runtime = substream->runtime;
529 struct voice *voice = runtime->private_data;
530 void __iomem *ctrl_base = voice->ctrl_base;
531 void __iomem *wave_base = voice->wave_base;
532 u32 format, dma_addr, control, sso_eso, delta, reg;
533 u16 leo;
534
535 /* We rely on the PCM core to ensure that the parameters for this
536 * substream do not change on us while we're programming the HW.
537 */
538 format = 0;
539 if (snd_pcm_format_width(runtime->format) == 8)
540 format |= SIS_PLAY_DMA_FORMAT_8BIT;
541 if (!snd_pcm_format_signed(runtime->format))
542 format |= SIS_PLAY_DMA_FORMAT_UNSIGNED;
543 if (runtime->channels == 1)
544 format |= SIS_PLAY_DMA_FORMAT_MONO;
545
546 /* The baseline setup is for a single period per buffer, and
547 * we add bells and whistles as needed from there.
548 */
549 dma_addr = runtime->dma_addr;
550 leo = runtime->buffer_size - 1;
551 control = leo | SIS_PLAY_DMA_LOOP | SIS_PLAY_DMA_INTR_AT_LEO;
552 sso_eso = leo;
553
554 if (runtime->period_size == (runtime->buffer_size / 2)) {
555 control |= SIS_PLAY_DMA_INTR_AT_MLP;
556 } else if (runtime->period_size != runtime->buffer_size) {
557 voice->flags |= VOICE_SSO_TIMING;
558 voice->sso = runtime->period_size - 1;
559 voice->period_size = runtime->period_size;
560 voice->buffer_size = runtime->buffer_size;
561
562 control &= ~SIS_PLAY_DMA_INTR_AT_LEO;
563 control |= SIS_PLAY_DMA_INTR_AT_SSO;
564 sso_eso |= (runtime->period_size - 1) << 16;
565 }
566
567 delta = sis_rate_to_delta(runtime->rate);
568
569 /* Ok, we're ready to go, set up the channel.
570 */
571 writel(format, ctrl_base + SIS_PLAY_DMA_FORMAT_CSO);
572 writel(dma_addr, ctrl_base + SIS_PLAY_DMA_BASE);
573 writel(control, ctrl_base + SIS_PLAY_DMA_CONTROL);
574 writel(sso_eso, ctrl_base + SIS_PLAY_DMA_SSO_ESO);
575
576 for (reg = 0; reg < SIS_WAVE_SIZE; reg += 4)
577 writel(0, wave_base + reg);
578
579 writel(SIS_WAVE_GENERAL_WAVE_VOLUME, wave_base + SIS_WAVE_GENERAL);
580 writel(delta << 16, wave_base + SIS_WAVE_GENERAL_ARTICULATION);
581 writel(SIS_WAVE_CHANNEL_CONTROL_FIRST_SAMPLE |
582 SIS_WAVE_CHANNEL_CONTROL_AMP_ENABLE |
583 SIS_WAVE_CHANNEL_CONTROL_INTERPOLATE_ENABLE,
584 wave_base + SIS_WAVE_CHANNEL_CONTROL);
585
586 /* Force PCI writes to post. */
587 readl(ctrl_base);
588
589 return 0;
590}
591
592static int sis_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
593{
594 struct sis7019 *sis = snd_pcm_substream_chip(substream);
595 unsigned long io = sis->ioport;
596 struct snd_pcm_substream *s;
597 struct voice *voice;
598 void *chip;
599 int starting;
600 u32 record = 0;
601 u32 play[2] = { 0, 0 };
602
603 /* No locks needed, as the PCM core will hold the locks on the
604 * substreams, and the HW will only start/stop the indicated voices
605 * without changing the state of the others.
606 */
607 switch (cmd) {
608 case SNDRV_PCM_TRIGGER_START:
609 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
610 case SNDRV_PCM_TRIGGER_RESUME:
611 starting = 1;
612 break;
613 case SNDRV_PCM_TRIGGER_STOP:
614 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
615 case SNDRV_PCM_TRIGGER_SUSPEND:
616 starting = 0;
617 break;
618 default:
619 return -EINVAL;
620 }
621
622 snd_pcm_group_for_each_entry(s, substream) {
623 /* Make sure it is for us... */
624 chip = snd_pcm_substream_chip(s);
625 if (chip != sis)
626 continue;
627
628 voice = s->runtime->private_data;
629 if (voice->flags & VOICE_CAPTURE) {
630 record |= 1 << voice->num;
631 voice = voice->timing;
632 }
633
634 /* voice could be NULL if this a recording stream, and it
635 * doesn't have an external timing channel.
636 */
637 if (voice)
638 play[voice->num / 32] |= 1 << (voice->num & 0x1f);
639
640 snd_pcm_trigger_done(s, substream);
641 }
642
643 if (starting) {
644 if (record)
645 outl(record, io + SIS_RECORD_START_REG);
646 if (play[0])
647 outl(play[0], io + SIS_PLAY_START_A_REG);
648 if (play[1])
649 outl(play[1], io + SIS_PLAY_START_B_REG);
650 } else {
651 if (record)
652 outl(record, io + SIS_RECORD_STOP_REG);
653 if (play[0])
654 outl(play[0], io + SIS_PLAY_STOP_A_REG);
655 if (play[1])
656 outl(play[1], io + SIS_PLAY_STOP_B_REG);
657 }
658 return 0;
659}
660
661static snd_pcm_uframes_t sis_pcm_pointer(struct snd_pcm_substream *substream)
662{
663 struct snd_pcm_runtime *runtime = substream->runtime;
664 struct voice *voice = runtime->private_data;
665 u32 cso;
666
667 cso = readl(voice->ctrl_base + SIS_PLAY_DMA_FORMAT_CSO);
668 cso &= 0xffff;
669 return cso;
670}
671
672static int sis_capture_open(struct snd_pcm_substream *substream)
673{
674 struct sis7019 *sis = snd_pcm_substream_chip(substream);
675 struct snd_pcm_runtime *runtime = substream->runtime;
676 struct voice *voice = &sis->capture_voice;
677 unsigned long flags;
678
679 /* FIXME: The driver only supports recording from one channel
680 * at the moment, but it could support more.
681 */
682 spin_lock_irqsave(&sis->voice_lock, flags);
683 if (voice->flags & VOICE_IN_USE)
684 voice = NULL;
685 else
686 voice->flags |= VOICE_IN_USE;
687 spin_unlock_irqrestore(&sis->voice_lock, flags);
688
689 if (!voice)
690 return -EAGAIN;
691
692 voice->substream = substream;
693 runtime->private_data = voice;
694 runtime->hw = sis_capture_hw_info;
695 runtime->hw.rates = sis->ac97[0]->rates[AC97_RATES_ADC];
696 snd_pcm_limit_hw_rates(runtime);
697 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
698 9, 0xfff9);
699 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
700 9, 0xfff9);
701 snd_pcm_set_sync(substream);
702 return 0;
703}
704
705static int sis_capture_hw_params(struct snd_pcm_substream *substream,
706 struct snd_pcm_hw_params *hw_params)
707{
708 struct sis7019 *sis = snd_pcm_substream_chip(substream);
709 int rc;
710
711 rc = snd_ac97_set_rate(sis->ac97[0], AC97_PCM_LR_ADC_RATE,
712 params_rate(hw_params));
713 if (rc)
714 goto out;
715
716 rc = snd_pcm_lib_malloc_pages(substream,
717 params_buffer_bytes(hw_params));
718 if (rc < 0)
719 goto out;
720
721 rc = sis_alloc_timing_voice(substream, hw_params);
722
723out:
724 return rc;
725}
726
727static void sis_prepare_timing_voice(struct voice *voice,
728 struct snd_pcm_substream *substream)
729{
730 struct sis7019 *sis = snd_pcm_substream_chip(substream);
731 struct snd_pcm_runtime *runtime = substream->runtime;
732 struct voice *timing = voice->timing;
733 void __iomem *play_base = timing->ctrl_base;
734 void __iomem *wave_base = timing->wave_base;
735 u16 buffer_size, period_size;
736 u32 format, control, sso_eso, delta;
737 u32 vperiod, sso, reg;
738
739 /* Set our initial buffer and period as large as we can given a
740 * single page of silence.
741 */
742 buffer_size = 4096 / runtime->channels;
743 buffer_size /= snd_pcm_format_size(runtime->format, 1);
744 period_size = buffer_size;
745
746 /* Initially, we want to interrupt just a bit behind the end of
747 * the period we're clocking out. 12 samples seems to give a good
748 * delay.
749 *
750 * We want to spread our interrupts throughout the virtual period,
751 * so that we don't end up with two interrupts back to back at the
752 * end -- this helps minimize the effects of any jitter. Adjust our
753 * clocking period size so that the last period is at least a fourth
754 * of a full period.
755 *
756 * This is all moot if we don't need to use virtual periods.
757 */
758 vperiod = runtime->period_size + 12;
759 if (vperiod > period_size) {
760 u16 tail = vperiod % period_size;
761 u16 quarter_period = period_size / 4;
762
763 if (tail && tail < quarter_period) {
764 u16 loops = vperiod / period_size;
765
766 tail = quarter_period - tail;
767 tail += loops - 1;
768 tail /= loops;
769 period_size -= tail;
770 }
771
772 sso = period_size - 1;
773 } else {
774 /* The initial period will fit inside the buffer, so we
775 * don't need to use virtual periods -- disable them.
776 */
777 period_size = runtime->period_size;
778 sso = vperiod - 1;
779 vperiod = 0;
780 }
781
782 /* The interrupt handler implements the timing synchronization, so
783 * setup its state.
784 */
785 timing->flags |= VOICE_SYNC_TIMING;
786 timing->sync_base = voice->ctrl_base;
787 timing->sync_cso = runtime->period_size;
788 timing->sync_period_size = runtime->period_size;
789 timing->sync_buffer_size = runtime->buffer_size;
790 timing->period_size = period_size;
791 timing->buffer_size = buffer_size;
792 timing->sso = sso;
793 timing->vperiod = vperiod;
794
795 /* Using unsigned samples with the all-zero silence buffer
796 * forces the output to the lower rail, killing playback.
797 * So ignore unsigned vs signed -- it doesn't change the timing.
798 */
799 format = 0;
800 if (snd_pcm_format_width(runtime->format) == 8)
801 format = SIS_CAPTURE_DMA_FORMAT_8BIT;
802 if (runtime->channels == 1)
803 format |= SIS_CAPTURE_DMA_FORMAT_MONO;
804
805 control = timing->buffer_size - 1;
806 control |= SIS_PLAY_DMA_LOOP | SIS_PLAY_DMA_INTR_AT_SSO;
807 sso_eso = timing->buffer_size - 1;
808 sso_eso |= timing->sso << 16;
809
810 delta = sis_rate_to_delta(runtime->rate);
811
812 /* We've done the math, now configure the channel.
813 */
814 writel(format, play_base + SIS_PLAY_DMA_FORMAT_CSO);
815 writel(sis->silence_dma_addr, play_base + SIS_PLAY_DMA_BASE);
816 writel(control, play_base + SIS_PLAY_DMA_CONTROL);
817 writel(sso_eso, play_base + SIS_PLAY_DMA_SSO_ESO);
818
819 for (reg = 0; reg < SIS_WAVE_SIZE; reg += 4)
820 writel(0, wave_base + reg);
821
822 writel(SIS_WAVE_GENERAL_WAVE_VOLUME, wave_base + SIS_WAVE_GENERAL);
823 writel(delta << 16, wave_base + SIS_WAVE_GENERAL_ARTICULATION);
824 writel(SIS_WAVE_CHANNEL_CONTROL_FIRST_SAMPLE |
825 SIS_WAVE_CHANNEL_CONTROL_AMP_ENABLE |
826 SIS_WAVE_CHANNEL_CONTROL_INTERPOLATE_ENABLE,
827 wave_base + SIS_WAVE_CHANNEL_CONTROL);
828}
829
830static int sis_pcm_capture_prepare(struct snd_pcm_substream *substream)
831{
832 struct snd_pcm_runtime *runtime = substream->runtime;
833 struct voice *voice = runtime->private_data;
834 void __iomem *rec_base = voice->ctrl_base;
835 u32 format, dma_addr, control;
836 u16 leo;
837
838 /* We rely on the PCM core to ensure that the parameters for this
839 * substream do not change on us while we're programming the HW.
840 */
841 format = 0;
842 if (snd_pcm_format_width(runtime->format) == 8)
843 format = SIS_CAPTURE_DMA_FORMAT_8BIT;
844 if (!snd_pcm_format_signed(runtime->format))
845 format |= SIS_CAPTURE_DMA_FORMAT_UNSIGNED;
846 if (runtime->channels == 1)
847 format |= SIS_CAPTURE_DMA_FORMAT_MONO;
848
849 dma_addr = runtime->dma_addr;
850 leo = runtime->buffer_size - 1;
851 control = leo | SIS_CAPTURE_DMA_LOOP;
852
853 /* If we've got more than two periods per buffer, then we have
854 * use a timing voice to clock out the periods. Otherwise, we can
855 * use the capture channel's interrupts.
856 */
857 if (voice->timing) {
858 sis_prepare_timing_voice(voice, substream);
859 } else {
860 control |= SIS_CAPTURE_DMA_INTR_AT_LEO;
861 if (runtime->period_size != runtime->buffer_size)
862 control |= SIS_CAPTURE_DMA_INTR_AT_MLP;
863 }
864
865 writel(format, rec_base + SIS_CAPTURE_DMA_FORMAT_CSO);
866 writel(dma_addr, rec_base + SIS_CAPTURE_DMA_BASE);
867 writel(control, rec_base + SIS_CAPTURE_DMA_CONTROL);
868
869 /* Force the writes to post. */
870 readl(rec_base);
871
872 return 0;
873}
874
875static struct snd_pcm_ops sis_playback_ops = {
876 .open = sis_playback_open,
877 .close = sis_substream_close,
878 .ioctl = snd_pcm_lib_ioctl,
879 .hw_params = sis_playback_hw_params,
880 .hw_free = sis_hw_free,
881 .prepare = sis_pcm_playback_prepare,
882 .trigger = sis_pcm_trigger,
883 .pointer = sis_pcm_pointer,
884};
885
886static struct snd_pcm_ops sis_capture_ops = {
887 .open = sis_capture_open,
888 .close = sis_substream_close,
889 .ioctl = snd_pcm_lib_ioctl,
890 .hw_params = sis_capture_hw_params,
891 .hw_free = sis_hw_free,
892 .prepare = sis_pcm_capture_prepare,
893 .trigger = sis_pcm_trigger,
894 .pointer = sis_pcm_pointer,
895};
896
897static int __devinit sis_pcm_create(struct sis7019 *sis)
898{
899 struct snd_pcm *pcm;
900 int rc;
901
902 /* We have 64 voices, and the driver currently records from
903 * only one channel, though that could change in the future.
904 */
905 rc = snd_pcm_new(sis->card, "SiS7019", 0, 64, 1, &pcm);
906 if (rc)
907 return rc;
908
909 pcm->private_data = sis;
910 strcpy(pcm->name, "SiS7019");
911 sis->pcm = pcm;
912
913 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &sis_playback_ops);
914 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &sis_capture_ops);
915
916 /* Try to preallocate some memory, but it's not the end of the
917 * world if this fails.
918 */
919 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
920 snd_dma_pci_data(sis->pci), 64*1024, 128*1024);
921
922 return 0;
923}
924
925static unsigned short sis_ac97_rw(struct sis7019 *sis, int codec, u32 cmd)
926{
927 unsigned long io = sis->ioport;
928 unsigned short val = 0xffff;
929 u16 status;
930 u16 rdy;
931 int count;
932 static const u16 codec_ready[3] = {
933 SIS_AC97_STATUS_CODEC_READY,
934 SIS_AC97_STATUS_CODEC2_READY,
935 SIS_AC97_STATUS_CODEC3_READY,
936 };
937
938 rdy = codec_ready[codec];
939
940
941 /* Get the AC97 semaphore -- software first, so we don't spin
942 * pounding out IO reads on the hardware semaphore...
943 */
944 mutex_lock(&sis->ac97_mutex);
945
946 count = 0xffff;
947 while ((inw(io + SIS_AC97_SEMA) & SIS_AC97_SEMA_BUSY) && --count)
948 udelay(1);
949
950 if (!count)
951 goto timeout;
952
953 /* ... and wait for any outstanding commands to complete ...
954 */
955 count = 0xffff;
956 do {
957 status = inw(io + SIS_AC97_STATUS);
958 if ((status & rdy) && !(status & SIS_AC97_STATUS_BUSY))
959 break;
960
961 udelay(1);
962 } while (--count);
963
964 if (!count)
965 goto timeout_sema;
966
967 /* ... before sending our command and waiting for it to finish ...
968 */
969 outl(cmd, io + SIS_AC97_CMD);
970 udelay(10);
971
972 count = 0xffff;
973 while ((inw(io + SIS_AC97_STATUS) & SIS_AC97_STATUS_BUSY) && --count)
974 udelay(1);
975
976 /* ... and reading the results (if any).
977 */
978 val = inl(io + SIS_AC97_CMD) >> 16;
979
980timeout_sema:
981 outl(SIS_AC97_SEMA_RELEASE, io + SIS_AC97_SEMA);
982timeout:
983 mutex_unlock(&sis->ac97_mutex);
984
985 if (!count) {
986 dev_err(&sis->pci->dev, "ac97 codec %d timeout cmd 0x%08x\n",
987 codec, cmd);
988 }
989
990 return val;
991}
992
993static void sis_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
994 unsigned short val)
995{
996 static const u32 cmd[3] = {
997 SIS_AC97_CMD_CODEC_WRITE,
998 SIS_AC97_CMD_CODEC2_WRITE,
999 SIS_AC97_CMD_CODEC3_WRITE,
1000 };
1001 sis_ac97_rw(ac97->private_data, ac97->num,
1002 (val << 16) | (reg << 8) | cmd[ac97->num]);
1003}
1004
1005static unsigned short sis_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
1006{
1007 static const u32 cmd[3] = {
1008 SIS_AC97_CMD_CODEC_READ,
1009 SIS_AC97_CMD_CODEC2_READ,
1010 SIS_AC97_CMD_CODEC3_READ,
1011 };
1012 return sis_ac97_rw(ac97->private_data, ac97->num,
1013 (reg << 8) | cmd[ac97->num]);
1014}
1015
1016static int __devinit sis_mixer_create(struct sis7019 *sis)
1017{
1018 struct snd_ac97_bus *bus;
1019 struct snd_ac97_template ac97;
1020 static struct snd_ac97_bus_ops ops = {
1021 .write = sis_ac97_write,
1022 .read = sis_ac97_read,
1023 };
1024 int rc;
1025
1026 memset(&ac97, 0, sizeof(ac97));
1027 ac97.private_data = sis;
1028
1029 rc = snd_ac97_bus(sis->card, 0, &ops, NULL, &bus);
1030 if (!rc && sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT)
1031 rc = snd_ac97_mixer(bus, &ac97, &sis->ac97[0]);
1032 ac97.num = 1;
1033 if (!rc && (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT))
1034 rc = snd_ac97_mixer(bus, &ac97, &sis->ac97[1]);
1035 ac97.num = 2;
1036 if (!rc && (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT))
1037 rc = snd_ac97_mixer(bus, &ac97, &sis->ac97[2]);
1038
1039 /* If we return an error here, then snd_card_free() should
1040 * free up any ac97 codecs that got created, as well as the bus.
1041 */
1042 return rc;
1043}
1044
1045static void sis_free_suspend(struct sis7019 *sis)
1046{
1047 int i;
1048
1049 for (i = 0; i < SIS_SUSPEND_PAGES; i++)
1050 kfree(sis->suspend_state[i]);
1051}
1052
1053static int sis_chip_free(struct sis7019 *sis)
1054{
1055 /* Reset the chip, and disable all interrputs.
1056 */
1057 outl(SIS_GCR_SOFTWARE_RESET, sis->ioport + SIS_GCR);
1058 udelay(25);
1059 outl(0, sis->ioport + SIS_GCR);
1060 outl(0, sis->ioport + SIS_GIER);
1061
1062 /* Now, free everything we allocated.
1063 */
1064 if (sis->irq >= 0)
1065 free_irq(sis->irq, sis);
1066
1067 if (sis->ioaddr)
1068 iounmap(sis->ioaddr);
1069
1070 pci_release_regions(sis->pci);
1071 pci_disable_device(sis->pci);
1072
1073 sis_free_suspend(sis);
1074 return 0;
1075}
1076
1077static int sis_dev_free(struct snd_device *dev)
1078{
1079 struct sis7019 *sis = dev->device_data;
1080 return sis_chip_free(sis);
1081}
1082
1083static int sis_chip_init(struct sis7019 *sis)
1084{
1085 unsigned long io = sis->ioport;
1086 void __iomem *ioaddr = sis->ioaddr;
1087 unsigned long timeout;
1088 u16 status;
1089 int count;
1090 int i;
1091
1092 /* Reset the audio controller
1093 */
1094 outl(SIS_GCR_SOFTWARE_RESET, io + SIS_GCR);
1095 udelay(25);
1096 outl(0, io + SIS_GCR);
1097
1098 /* Get the AC-link semaphore, and reset the codecs
1099 */
1100 count = 0xffff;
1101 while ((inw(io + SIS_AC97_SEMA) & SIS_AC97_SEMA_BUSY) && --count)
1102 udelay(1);
1103
1104 if (!count)
1105 return -EIO;
1106
1107 outl(SIS_AC97_CMD_CODEC_COLD_RESET, io + SIS_AC97_CMD);
1108 udelay(250);
1109
1110 count = 0xffff;
1111 while ((inw(io + SIS_AC97_STATUS) & SIS_AC97_STATUS_BUSY) && --count)
1112 udelay(1);
1113
1114 /* Command complete, we can let go of the semaphore now.
1115 */
1116 outl(SIS_AC97_SEMA_RELEASE, io + SIS_AC97_SEMA);
1117 if (!count)
1118 return -EIO;
1119
1120 /* Now that we've finished the reset, find out what's attached.
1121 * There are some codec/board combinations that take an extremely
1122 * long time to come up. 350+ ms has been observed in the field,
1123 * so we'll give them up to 500ms.
1124 */
1125 sis->codecs_present = 0;
1126 timeout = msecs_to_jiffies(500) + jiffies;
1127 while (time_before_eq(jiffies, timeout)) {
1128 status = inl(io + SIS_AC97_STATUS);
1129 if (status & SIS_AC97_STATUS_CODEC_READY)
1130 sis->codecs_present |= SIS_PRIMARY_CODEC_PRESENT;
1131 if (status & SIS_AC97_STATUS_CODEC2_READY)
1132 sis->codecs_present |= SIS_SECONDARY_CODEC_PRESENT;
1133 if (status & SIS_AC97_STATUS_CODEC3_READY)
1134 sis->codecs_present |= SIS_TERTIARY_CODEC_PRESENT;
1135
1136 if (sis->codecs_present == codecs)
1137 break;
1138
1139 msleep(1);
1140 }
1141
1142 /* All done, check for errors.
1143 */
1144 if (!sis->codecs_present) {
1145 dev_err(&sis->pci->dev, "could not find any codecs\n");
1146 return -EIO;
1147 }
1148
1149 if (sis->codecs_present != codecs) {
1150 dev_warn(&sis->pci->dev, "missing codecs, found %0x, expected %0x\n",
1151 sis->codecs_present, codecs);
1152 }
1153
1154 /* Let the hardware know that the audio driver is alive,
1155 * and enable PCM slots on the AC-link for L/R playback (3 & 4) and
1156 * record channels. We're going to want to use Variable Rate Audio
1157 * for recording, to avoid needlessly resampling from 48kHZ.
1158 */
1159 outl(SIS_AC97_CONF_AUDIO_ALIVE, io + SIS_AC97_CONF);
1160 outl(SIS_AC97_CONF_AUDIO_ALIVE | SIS_AC97_CONF_PCM_LR_ENABLE |
1161 SIS_AC97_CONF_PCM_CAP_MIC_ENABLE |
1162 SIS_AC97_CONF_PCM_CAP_LR_ENABLE |
1163 SIS_AC97_CONF_CODEC_VRA_ENABLE, io + SIS_AC97_CONF);
1164
1165 /* All AC97 PCM slots should be sourced from sub-mixer 0.
1166 */
1167 outl(0, io + SIS_AC97_PSR);
1168
1169 /* There is only one valid DMA setup for a PCI environment.
1170 */
1171 outl(SIS_DMA_CSR_PCI_SETTINGS, io + SIS_DMA_CSR);
1172
1173 /* Reset the synchronization groups for all of the channels
1174 * to be asyncronous. If we start doing SPDIF or 5.1 sound, etc.
1175 * we'll need to change how we handle these. Until then, we just
1176 * assign sub-mixer 0 to all playback channels, and avoid any
1177 * attenuation on the audio.
1178 */
1179 outl(0, io + SIS_PLAY_SYNC_GROUP_A);
1180 outl(0, io + SIS_PLAY_SYNC_GROUP_B);
1181 outl(0, io + SIS_PLAY_SYNC_GROUP_C);
1182 outl(0, io + SIS_PLAY_SYNC_GROUP_D);
1183 outl(0, io + SIS_MIXER_SYNC_GROUP);
1184
1185 for (i = 0; i < 64; i++) {
1186 writel(i, SIS_MIXER_START_ADDR(ioaddr, i));
1187 writel(SIS_MIXER_RIGHT_NO_ATTEN | SIS_MIXER_LEFT_NO_ATTEN |
1188 SIS_MIXER_DEST_0, SIS_MIXER_ADDR(ioaddr, i));
1189 }
1190
1191 /* Don't attenuate any audio set for the wave amplifier.
1192 *
1193 * FIXME: Maximum attenuation is set for the music amp, which will
1194 * need to change if we start using the synth engine.
1195 */
1196 outl(0xffff0000, io + SIS_WEVCR);
1197
1198 /* Ensure that the wave engine is in normal operating mode.
1199 */
1200 outl(0, io + SIS_WECCR);
1201
1202 /* Go ahead and enable the DMA interrupts. They won't go live
1203 * until we start a channel.
1204 */
1205 outl(SIS_GIER_AUDIO_PLAY_DMA_IRQ_ENABLE |
1206 SIS_GIER_AUDIO_RECORD_DMA_IRQ_ENABLE, io + SIS_GIER);
1207
1208 return 0;
1209}
1210
1211#ifdef CONFIG_PM
1212static int sis_suspend(struct pci_dev *pci, pm_message_t state)
1213{
1214 struct snd_card *card = pci_get_drvdata(pci);
1215 struct sis7019 *sis = card->private_data;
1216 void __iomem *ioaddr = sis->ioaddr;
1217 int i;
1218
1219 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1220 snd_pcm_suspend_all(sis->pcm);
1221 if (sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT)
1222 snd_ac97_suspend(sis->ac97[0]);
1223 if (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT)
1224 snd_ac97_suspend(sis->ac97[1]);
1225 if (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT)
1226 snd_ac97_suspend(sis->ac97[2]);
1227
1228 /* snd_pcm_suspend_all() stopped all channels, so we're quiescent.
1229 */
1230 if (sis->irq >= 0) {
1231 free_irq(sis->irq, sis);
1232 sis->irq = -1;
1233 }
1234
1235 /* Save the internal state away
1236 */
1237 for (i = 0; i < 4; i++) {
1238 memcpy_fromio(sis->suspend_state[i], ioaddr, 4096);
1239 ioaddr += 4096;
1240 }
1241
1242 pci_disable_device(pci);
1243 pci_save_state(pci);
1244 pci_set_power_state(pci, pci_choose_state(pci, state));
1245 return 0;
1246}
1247
1248static int sis_resume(struct pci_dev *pci)
1249{
1250 struct snd_card *card = pci_get_drvdata(pci);
1251 struct sis7019 *sis = card->private_data;
1252 void __iomem *ioaddr = sis->ioaddr;
1253 int i;
1254
1255 pci_set_power_state(pci, PCI_D0);
1256 pci_restore_state(pci);
1257
1258 if (pci_enable_device(pci) < 0) {
1259 dev_err(&pci->dev, "unable to re-enable device\n");
1260 goto error;
1261 }
1262
1263 if (sis_chip_init(sis)) {
1264 dev_err(&pci->dev, "unable to re-init controller\n");
1265 goto error;
1266 }
1267
1268 if (request_irq(pci->irq, sis_interrupt, IRQF_SHARED,
1269 KBUILD_MODNAME, sis)) {
1270 dev_err(&pci->dev, "unable to regain IRQ %d\n", pci->irq);
1271 goto error;
1272 }
1273
1274 /* Restore saved state, then clear out the page we use for the
1275 * silence buffer.
1276 */
1277 for (i = 0; i < 4; i++) {
1278 memcpy_toio(ioaddr, sis->suspend_state[i], 4096);
1279 ioaddr += 4096;
1280 }
1281
1282 memset(sis->suspend_state[0], 0, 4096);
1283
1284 sis->irq = pci->irq;
1285 pci_set_master(pci);
1286
1287 if (sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT)
1288 snd_ac97_resume(sis->ac97[0]);
1289 if (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT)
1290 snd_ac97_resume(sis->ac97[1]);
1291 if (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT)
1292 snd_ac97_resume(sis->ac97[2]);
1293
1294 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1295 return 0;
1296
1297error:
1298 snd_card_disconnect(card);
1299 return -EIO;
1300}
1301#endif /* CONFIG_PM */
1302
1303static int sis_alloc_suspend(struct sis7019 *sis)
1304{
1305 int i;
1306
1307 /* We need 16K to store the internal wave engine state during a
1308 * suspend, but we don't need it to be contiguous, so play nice
1309 * with the memory system. We'll also use this area for a silence
1310 * buffer.
1311 */
1312 for (i = 0; i < SIS_SUSPEND_PAGES; i++) {
1313 sis->suspend_state[i] = kmalloc(4096, GFP_KERNEL);
1314 if (!sis->suspend_state[i])
1315 return -ENOMEM;
1316 }
1317 memset(sis->suspend_state[0], 0, 4096);
1318
1319 return 0;
1320}
1321
1322static int __devinit sis_chip_create(struct snd_card *card,
1323 struct pci_dev *pci)
1324{
1325 struct sis7019 *sis = card->private_data;
1326 struct voice *voice;
1327 static struct snd_device_ops ops = {
1328 .dev_free = sis_dev_free,
1329 };
1330 int rc;
1331 int i;
1332
1333 rc = pci_enable_device(pci);
1334 if (rc)
1335 goto error_out;
1336
1337 if (pci_set_dma_mask(pci, DMA_BIT_MASK(30)) < 0) {
1338 dev_err(&pci->dev, "architecture does not support 30-bit PCI busmaster DMA");
1339 goto error_out_enabled;
1340 }
1341
1342 memset(sis, 0, sizeof(*sis));
1343 mutex_init(&sis->ac97_mutex);
1344 spin_lock_init(&sis->voice_lock);
1345 sis->card = card;
1346 sis->pci = pci;
1347 sis->irq = -1;
1348 sis->ioport = pci_resource_start(pci, 0);
1349
1350 rc = pci_request_regions(pci, "SiS7019");
1351 if (rc) {
1352 dev_err(&pci->dev, "unable request regions\n");
1353 goto error_out_enabled;
1354 }
1355
1356 rc = -EIO;
1357 sis->ioaddr = ioremap_nocache(pci_resource_start(pci, 1), 0x4000);
1358 if (!sis->ioaddr) {
1359 dev_err(&pci->dev, "unable to remap MMIO, aborting\n");
1360 goto error_out_cleanup;
1361 }
1362
1363 rc = sis_alloc_suspend(sis);
1364 if (rc < 0) {
1365 dev_err(&pci->dev, "unable to allocate state storage\n");
1366 goto error_out_cleanup;
1367 }
1368
1369 rc = sis_chip_init(sis);
1370 if (rc)
1371 goto error_out_cleanup;
1372
1373 if (request_irq(pci->irq, sis_interrupt, IRQF_SHARED, KBUILD_MODNAME,
1374 sis)) {
1375 dev_err(&pci->dev, "unable to allocate irq %d\n", sis->irq);
1376 goto error_out_cleanup;
1377 }
1378
1379 sis->irq = pci->irq;
1380 pci_set_master(pci);
1381
1382 for (i = 0; i < 64; i++) {
1383 voice = &sis->voices[i];
1384 voice->num = i;
1385 voice->ctrl_base = SIS_PLAY_DMA_ADDR(sis->ioaddr, i);
1386 voice->wave_base = SIS_WAVE_ADDR(sis->ioaddr, i);
1387 }
1388
1389 voice = &sis->capture_voice;
1390 voice->flags = VOICE_CAPTURE;
1391 voice->num = SIS_CAPTURE_CHAN_AC97_PCM_IN;
1392 voice->ctrl_base = SIS_CAPTURE_DMA_ADDR(sis->ioaddr, voice->num);
1393
1394 rc = snd_device_new(card, SNDRV_DEV_LOWLEVEL, sis, &ops);
1395 if (rc)
1396 goto error_out_cleanup;
1397
1398 snd_card_set_dev(card, &pci->dev);
1399
1400 return 0;
1401
1402error_out_cleanup:
1403 sis_chip_free(sis);
1404
1405error_out_enabled:
1406 pci_disable_device(pci);
1407
1408error_out:
1409 return rc;
1410}
1411
1412static int __devinit snd_sis7019_probe(struct pci_dev *pci,
1413 const struct pci_device_id *pci_id)
1414{
1415 struct snd_card *card;
1416 struct sis7019 *sis;
1417 int rc;
1418
1419 rc = -ENOENT;
1420 if (!enable)
1421 goto error_out;
1422
1423 /* The user can specify which codecs should be present so that we
1424 * can wait for them to show up if they are slow to recover from
1425 * the AC97 cold reset. We default to a single codec, the primary.
1426 *
1427 * We assume that SIS_PRIMARY_*_PRESENT matches bits 0-2.
1428 */
1429 codecs &= SIS_PRIMARY_CODEC_PRESENT | SIS_SECONDARY_CODEC_PRESENT |
1430 SIS_TERTIARY_CODEC_PRESENT;
1431 if (!codecs)
1432 codecs = SIS_PRIMARY_CODEC_PRESENT;
1433
1434 rc = snd_card_create(index, id, THIS_MODULE, sizeof(*sis), &card);
1435 if (rc < 0)
1436 goto error_out;
1437
1438 strcpy(card->driver, "SiS7019");
1439 strcpy(card->shortname, "SiS7019");
1440 rc = sis_chip_create(card, pci);
1441 if (rc)
1442 goto card_error_out;
1443
1444 sis = card->private_data;
1445
1446 rc = sis_mixer_create(sis);
1447 if (rc)
1448 goto card_error_out;
1449
1450 rc = sis_pcm_create(sis);
1451 if (rc)
1452 goto card_error_out;
1453
1454 snprintf(card->longname, sizeof(card->longname),
1455 "%s Audio Accelerator with %s at 0x%lx, irq %d",
1456 card->shortname, snd_ac97_get_short_name(sis->ac97[0]),
1457 sis->ioport, sis->irq);
1458
1459 rc = snd_card_register(card);
1460 if (rc)
1461 goto card_error_out;
1462
1463 pci_set_drvdata(pci, card);
1464 return 0;
1465
1466card_error_out:
1467 snd_card_free(card);
1468
1469error_out:
1470 return rc;
1471}
1472
1473static void __devexit snd_sis7019_remove(struct pci_dev *pci)
1474{
1475 snd_card_free(pci_get_drvdata(pci));
1476 pci_set_drvdata(pci, NULL);
1477}
1478
1479static struct pci_driver sis7019_driver = {
1480 .name = KBUILD_MODNAME,
1481 .id_table = snd_sis7019_ids,
1482 .probe = snd_sis7019_probe,
1483 .remove = __devexit_p(snd_sis7019_remove),
1484
1485#ifdef CONFIG_PM
1486 .suspend = sis_suspend,
1487 .resume = sis_resume,
1488#endif
1489};
1490
1491static int __init sis7019_init(void)
1492{
1493 return pci_register_driver(&sis7019_driver);
1494}
1495
1496static void __exit sis7019_exit(void)
1497{
1498 pci_unregister_driver(&sis7019_driver);
1499}
1500
1501module_init(sis7019_init);
1502module_exit(sis7019_exit);
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