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[ALSA] Remove superfluous PCI ID definitions
[deliverable/linux.git] / sound / pci / nm256 / nm256.c
CommitLineData
1da177e4
LT		 1/*
2 * Driver for NeoMagic 256AV and 256ZX chipsets.
3 * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>
4 *
5 * Based on nm256_audio.c OSS driver in linux kernel.
6 * The original author of OSS nm256 driver wishes to remain anonymous,
7 * so I just put my acknoledgment to him/her here.
8 * The original author's web page is found at
9 * http://www.uglx.org/sony.html
10 *
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 */
26
27#include <sound/driver.h>
28#include <asm/io.h>
29#include <linux/delay.h>
30#include <linux/interrupt.h>
31#include <linux/init.h>
32#include <linux/pci.h>
33#include <linux/slab.h>
34#include <linux/moduleparam.h>
35#include <sound/core.h>
36#include <sound/info.h>
37#include <sound/control.h>
38#include <sound/pcm.h>
39#include <sound/ac97_codec.h>
40#include <sound/initval.h>
41
42#define CARD_NAME "NeoMagic 256AV/ZX"
43#define DRIVER_NAME "NM256"
44
45MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
46MODULE_DESCRIPTION("NeoMagic NM256AV/ZX");
47MODULE_LICENSE("GPL");
48MODULE_SUPPORTED_DEVICE("{{NeoMagic,NM256AV},"
49 "{NeoMagic,NM256ZX}}");
50
51/*
52 * some compile conditions.
53 */
54
55static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
56static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
57static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
58static int playback_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 16};
59static int capture_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 16};
60static int force_ac97[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled as default */
61static int buffer_top[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* not specified */
62static int use_cache[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled */
63static int vaio_hack[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled */
64static int reset_workaround[SNDRV_CARDS];
65
66module_param_array(index, int, NULL, 0444);
67MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
68module_param_array(id, charp, NULL, 0444);
69MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
70module_param_array(enable, bool, NULL, 0444);
71MODULE_PARM_DESC(enable, "Enable this soundcard.");
72module_param_array(playback_bufsize, int, NULL, 0444);
73MODULE_PARM_DESC(playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard.");
74module_param_array(capture_bufsize, int, NULL, 0444);
75MODULE_PARM_DESC(capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard.");
76module_param_array(force_ac97, bool, NULL, 0444);
77MODULE_PARM_DESC(force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard.");
78module_param_array(buffer_top, int, NULL, 0444);
79MODULE_PARM_DESC(buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard.");
80module_param_array(use_cache, bool, NULL, 0444);
81MODULE_PARM_DESC(use_cache, "Enable the cache for coefficient table access.");
82module_param_array(vaio_hack, bool, NULL, 0444);
83MODULE_PARM_DESC(vaio_hack, "Enable workaround for Sony VAIO notebooks.");
84module_param_array(reset_workaround, bool, NULL, 0444);
85MODULE_PARM_DESC(reset_workaround, "Enable AC97 RESET workaround for some laptops.");
86
87/*
88 * hw definitions
89 */
90
91/* The BIOS signature. */
92#define NM_SIGNATURE 0x4e4d0000
93/* Signature mask. */
94#define NM_SIG_MASK 0xffff0000
95
96/* Size of the second memory area. */
97#define NM_PORT2_SIZE 4096
98
99/* The base offset of the mixer in the second memory area. */
100#define NM_MIXER_OFFSET 0x600
101
102/* The maximum size of a coefficient entry. */
103#define NM_MAX_PLAYBACK_COEF_SIZE 0x5000
104#define NM_MAX_RECORD_COEF_SIZE 0x1260
105
106/* The interrupt register. */
107#define NM_INT_REG 0xa04
108/* And its bits. */
109#define NM_PLAYBACK_INT 0x40
110#define NM_RECORD_INT 0x100
111#define NM_MISC_INT_1 0x4000
112#define NM_MISC_INT_2 0x1
113#define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1)
114
115/* The AV's "mixer ready" status bit and location. */
116#define NM_MIXER_STATUS_OFFSET 0xa04
117#define NM_MIXER_READY_MASK 0x0800
118#define NM_MIXER_PRESENCE 0xa06
119#define NM_PRESENCE_MASK 0x0050
120#define NM_PRESENCE_VALUE 0x0040
121
122/*
123 * For the ZX. It uses the same interrupt register, but it holds 32
124 * bits instead of 16.
125 */
126#define NM2_PLAYBACK_INT 0x10000
127#define NM2_RECORD_INT 0x80000
128#define NM2_MISC_INT_1 0x8
129#define NM2_MISC_INT_2 0x2
130#define NM2_ACK_INT(chip, X) snd_nm256_writel(chip, NM_INT_REG, (X))
131
132/* The ZX's "mixer ready" status bit and location. */
133#define NM2_MIXER_STATUS_OFFSET 0xa06
134#define NM2_MIXER_READY_MASK 0x0800
135
136/* The playback registers start from here. */
137#define NM_PLAYBACK_REG_OFFSET 0x0
138/* The record registers start from here. */
139#define NM_RECORD_REG_OFFSET 0x200
140
141/* The rate register is located 2 bytes from the start of the register area. */
142#define NM_RATE_REG_OFFSET 2
143
144/* Mono/stereo flag, number of bits on playback, and rate mask. */
145#define NM_RATE_STEREO 1
146#define NM_RATE_BITS_16 2
147#define NM_RATE_MASK 0xf0
148
149/* Playback enable register. */
150#define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1)
151#define NM_PLAYBACK_ENABLE_FLAG 1
152#define NM_PLAYBACK_ONESHOT 2
153#define NM_PLAYBACK_FREERUN 4
154
155/* Mutes the audio output. */
156#define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18)
157#define NM_AUDIO_MUTE_LEFT 0x8000
158#define NM_AUDIO_MUTE_RIGHT 0x0080
159
160/* Recording enable register. */
161#define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0)
162#define NM_RECORD_ENABLE_FLAG 1
163#define NM_RECORD_FREERUN 2
164
165/* coefficient buffer pointer */
166#define NM_COEFF_START_OFFSET 0x1c
167#define NM_COEFF_END_OFFSET 0x20
168
169/* DMA buffer offsets */
170#define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4)
171#define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10)
172#define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc)
173#define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8)
174
175#define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4)
176#define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14)
177#define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc)
178#define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8)
179
180/*
181 * type definitions
182 */
183
184typedef struct snd_nm256 nm256_t;
185typedef struct snd_nm256_stream nm256_stream_t;
186
187struct snd_nm256_stream {
188
189 nm256_t *chip;
190 snd_pcm_substream_t *substream;
191 int running;
1204de32 192 int suspended;
1da177e4
LT		 193
194 u32 buf; /* offset from chip->buffer */
195 int bufsize; /* buffer size in bytes */
196 void __iomem *bufptr; /* mapped pointer */
197 unsigned long bufptr_addr; /* physical address of the mapped pointer */
198
199 int dma_size; /* buffer size of the substream in bytes */
200 int period_size; /* period size in bytes */
201 int periods; /* # of periods */
202 int shift; /* bit shifts */
203 int cur_period; /* current period # */
204
205};
206
207struct snd_nm256 {
208
209 snd_card_t *card;
210
211 void __iomem *cport; /* control port */
212 struct resource *res_cport; /* its resource */
213 unsigned long cport_addr; /* physical address */
214
215 void __iomem *buffer; /* buffer */
216 struct resource *res_buffer; /* its resource */
217 unsigned long buffer_addr; /* buffer phyiscal address */
218
219 u32 buffer_start; /* start offset from pci resource 0 */
220 u32 buffer_end; /* end offset */
221 u32 buffer_size; /* total buffer size */
222
223 u32 all_coeff_buf; /* coefficient buffer */
224 u32 coeff_buf[2]; /* coefficient buffer for each stream */
225
226 unsigned int coeffs_current: 1; /* coeff. table is loaded? */
227 unsigned int use_cache: 1; /* use one big coef. table */
228 unsigned int reset_workaround: 1; /* Workaround for some laptops to avoid freeze */
229
230 int mixer_base; /* register offset of ac97 mixer */
231 int mixer_status_offset; /* offset of mixer status reg. */
232 int mixer_status_mask; /* bit mask to test the mixer status */
233
234 int irq;
1204de32 235 int irq_acks;
1da177e4
LT		 236 irqreturn_t (*interrupt)(int, void *, struct pt_regs *);
237 int badintrcount; /* counter to check bogus interrupts */
1204de32 238 struct semaphore irq_mutex;
1da177e4
LT		 239
240 nm256_stream_t streams[2];
241
242 ac97_t *ac97;
243
244 snd_pcm_t *pcm;
245
246 struct pci_dev *pci;
247
248 spinlock_t reg_lock;
249
250};
251
252
253/*
254 * include coefficient table
255 */
256#include "nm256_coef.c"
257
258
259/*
260 * PCI ids
261 */
1da177e4
LT		 262static struct pci_device_id snd_nm256_ids[] = {
263 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
264 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
265 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
266 {0,},
267};
268
269MODULE_DEVICE_TABLE(pci, snd_nm256_ids);
270
271
272/*
273 * lowlvel stuffs
274 */
275
77933d72 276static inline u8
1da177e4
LT		 277snd_nm256_readb(nm256_t *chip, int offset)
278{
279 return readb(chip->cport + offset);
280}
281
77933d72 282static inline u16
1da177e4
LT		 283snd_nm256_readw(nm256_t *chip, int offset)
284{
285 return readw(chip->cport + offset);
286}
287
77933d72 288static inline u32
1da177e4
LT		 289snd_nm256_readl(nm256_t *chip, int offset)
290{
291 return readl(chip->cport + offset);
292}
293
77933d72 294static inline void
1da177e4
LT		 295snd_nm256_writeb(nm256_t *chip, int offset, u8 val)
296{
297 writeb(val, chip->cport + offset);
298}
299
77933d72 300static inline void
1da177e4
LT		 301snd_nm256_writew(nm256_t *chip, int offset, u16 val)
302{
303 writew(val, chip->cport + offset);
304}
305
77933d72 306static inline void
1da177e4
LT		 307snd_nm256_writel(nm256_t *chip, int offset, u32 val)
308{
309 writel(val, chip->cport + offset);
310}
311
77933d72 312static inline void
1da177e4
LT		 313snd_nm256_write_buffer(nm256_t *chip, void *src, int offset, int size)
314{
315 offset -= chip->buffer_start;
316#ifdef SNDRV_CONFIG_DEBUG
317 if (offset < 0 || offset >= chip->buffer_size) {
318 snd_printk("write_buffer invalid offset = %d size = %d\n", offset, size);
319 return;
320 }
321#endif
322 memcpy_toio(chip->buffer + offset, src, size);
323}
324
325/*
326 * coefficient handlers -- what a magic!
327 */
328
329static u16
330snd_nm256_get_start_offset(int which)
331{
332 u16 offset = 0;
333 while (which-- > 0)
334 offset += coefficient_sizes[which];
335 return offset;
336}
337
338static void
339snd_nm256_load_one_coefficient(nm256_t *chip, int stream, u32 port, int which)
340{
341 u32 coeff_buf = chip->coeff_buf[stream];
342 u16 offset = snd_nm256_get_start_offset(which);
343 u16 size = coefficient_sizes[which];
344
345 snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size);
346 snd_nm256_writel(chip, port, coeff_buf);
347 /* ??? Record seems to behave differently than playback. */
348 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
349 size--;
350 snd_nm256_writel(chip, port + 4, coeff_buf + size);
351}
352
353static void
354snd_nm256_load_coefficient(nm256_t *chip, int stream, int number)
355{
356 /* The enable register for the specified engine. */
357 u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ? NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG);
358 u32 addr = NM_COEFF_START_OFFSET;
359
360 addr += (stream == SNDRV_PCM_STREAM_CAPTURE ? NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET);
361
362 if (snd_nm256_readb(chip, poffset) & 1) {
363 snd_printd("NM256: Engine was enabled while loading coefficients!\n");
364 return;
365 }
366
367 /* The recording engine uses coefficient values 8-15. */
368 number &= 7;
369 if (stream == SNDRV_PCM_STREAM_CAPTURE)
370 number += 8;
371
372 if (! chip->use_cache) {
373 snd_nm256_load_one_coefficient(chip, stream, addr, number);
374 return;
375 }
376 if (! chip->coeffs_current) {
377 snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf,
378 NM_TOTAL_COEFF_COUNT * 4);
379 chip->coeffs_current = 1;
380 } else {
381 u32 base = chip->all_coeff_buf;
382 u32 offset = snd_nm256_get_start_offset(number);
383 u32 end_offset = offset + coefficient_sizes[number];
384 snd_nm256_writel(chip, addr, base + offset);
385 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
386 end_offset--;
387 snd_nm256_writel(chip, addr + 4, base + end_offset);
388 }
389}
390
391
392/* The actual rates supported by the card. */
393static unsigned int samplerates[8] = {
394 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000,
395};
396static snd_pcm_hw_constraint_list_t constraints_rates = {
397 .count = ARRAY_SIZE(samplerates),
398 .list = samplerates,
399 .mask = 0,
400};
401
402/*
403 * return the index of the target rate
404 */
405static int
406snd_nm256_fixed_rate(unsigned int rate)
407{
408 unsigned int i;
409 for (i = 0; i < ARRAY_SIZE(samplerates); i++) {
410 if (rate == samplerates[i])
411 return i;
412 }
413 snd_BUG();
414 return 0;
415}
416
417/*
418 * set sample rate and format
419 */
420static void
421snd_nm256_set_format(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream)
422{
423 snd_pcm_runtime_t *runtime = substream->runtime;
424 int rate_index = snd_nm256_fixed_rate(runtime->rate);
425 unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK;
426
427 s->shift = 0;
428 if (snd_pcm_format_width(runtime->format) == 16) {
429 ratebits |= NM_RATE_BITS_16;
430 s->shift++;
431 }
432 if (runtime->channels > 1) {
433 ratebits |= NM_RATE_STEREO;
434 s->shift++;
435 }
436
437 runtime->rate = samplerates[rate_index];
438
439 switch (substream->stream) {
440 case SNDRV_PCM_STREAM_PLAYBACK:
441 snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */
442 snd_nm256_writeb(chip,
443 NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET,
444 ratebits);
445 break;
446 case SNDRV_PCM_STREAM_CAPTURE:
447 snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */
448 snd_nm256_writeb(chip,
449 NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET,
450 ratebits);
451 break;
452 }
453}
454
1204de32
TI		 455/* acquire interrupt */
456static int snd_nm256_acquire_irq(nm256_t *chip)
457{
458 down(&chip->irq_mutex);
459 if (chip->irq < 0) {
460 if (request_irq(chip->pci->irq, chip->interrupt, SA_INTERRUPT|SA_SHIRQ,
461 chip->card->driver, (void*)chip)) {
462 snd_printk("unable to grab IRQ %d\n", chip->pci->irq);
463 up(&chip->irq_mutex);
464 return -EBUSY;
465 }
466 chip->irq = chip->pci->irq;
467 }
468 chip->irq_acks++;
469 up(&chip->irq_mutex);
470 return 0;
471}
472
473/* release interrupt */
474static void snd_nm256_release_irq(nm256_t *chip)
475{
476 down(&chip->irq_mutex);
477 if (chip->irq_acks > 0)
478 chip->irq_acks--;
479 if (chip->irq_acks == 0 && chip->irq >= 0) {
480 free_irq(chip->irq, (void*)chip);
481 chip->irq = -1;
482 }
483 up(&chip->irq_mutex);
484}
485
1da177e4
LT		 486/*
487 * start / stop
488 */
489
490/* update the watermark (current period) */
491static void snd_nm256_pcm_mark(nm256_t *chip, nm256_stream_t *s, int reg)
492{
493 s->cur_period++;
494 s->cur_period %= s->periods;
495 snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size);
496}
497
498#define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK)
499#define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK)
500
501static void
502snd_nm256_playback_start(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream)
503{
504 /* program buffer pointers */
505 snd_nm256_writel(chip, NM_PBUFFER_START, s->buf);
506 snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift));
507 snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf);
508 snd_nm256_playback_mark(chip, s);
509
510 /* Enable playback engine and interrupts. */
511 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG,
512 NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN);
513 /* Enable both channels. */
514 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0);
515}
516
517static void
518snd_nm256_capture_start(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream)
519{
520 /* program buffer pointers */
521 snd_nm256_writel(chip, NM_RBUFFER_START, s->buf);
522 snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size);
523 snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf);
524 snd_nm256_capture_mark(chip, s);
525
526 /* Enable playback engine and interrupts. */
527 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG,
528 NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN);
529}
530
531/* Stop the play engine. */
532static void
533snd_nm256_playback_stop(nm256_t *chip)
534{
535 /* Shut off sound from both channels. */
536 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG,
537 NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT);
538 /* Disable play engine. */
539 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0);
540}
541
542static void
543snd_nm256_capture_stop(nm256_t *chip)
544{
545 /* Disable recording engine. */
546 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0);
547}
548
549static int
550snd_nm256_playback_trigger(snd_pcm_substream_t *substream, int cmd)
551{
552 nm256_t *chip = snd_pcm_substream_chip(substream);
553 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data;
554 int err = 0;
555
556 snd_assert(s != NULL, return -ENXIO);
557
558 spin_lock(&chip->reg_lock);
559 switch (cmd) {
1da177e4 560 case SNDRV_PCM_TRIGGER_RESUME:
1204de32
TI		 561 s->suspended = 0;
562 /* fallthru */
563 case SNDRV_PCM_TRIGGER_START:
1da177e4
LT		 564 if (! s->running) {
565 snd_nm256_playback_start(chip, s, substream);
566 s->running = 1;
567 }
568 break;
1da177e4 569 case SNDRV_PCM_TRIGGER_SUSPEND:
1204de32
TI		 570 s->suspended = 1;
571 /* fallthru */
572 case SNDRV_PCM_TRIGGER_STOP:
1da177e4
LT		 573 if (s->running) {
574 snd_nm256_playback_stop(chip);
575 s->running = 0;
576 }
577 break;
578 default:
579 err = -EINVAL;
580 break;
581 }
582 spin_unlock(&chip->reg_lock);
583 return err;
584}
585
586static int
587snd_nm256_capture_trigger(snd_pcm_substream_t *substream, int cmd)
588{
589 nm256_t *chip = snd_pcm_substream_chip(substream);
590 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data;
591 int err = 0;
592
593 snd_assert(s != NULL, return -ENXIO);
594
595 spin_lock(&chip->reg_lock);
596 switch (cmd) {
597 case SNDRV_PCM_TRIGGER_START:
598 case SNDRV_PCM_TRIGGER_RESUME:
599 if (! s->running) {
600 snd_nm256_capture_start(chip, s, substream);
601 s->running = 1;
602 }
603 break;
604 case SNDRV_PCM_TRIGGER_STOP:
605 case SNDRV_PCM_TRIGGER_SUSPEND:
606 if (s->running) {
607 snd_nm256_capture_stop(chip);
608 s->running = 0;
609 }
610 break;
611 default:
612 err = -EINVAL;
613 break;
614 }
615 spin_unlock(&chip->reg_lock);
616 return err;
617}
618
619
620/*
621 * prepare playback/capture channel
622 */
623static int snd_nm256_pcm_prepare(snd_pcm_substream_t *substream)
624{
625 nm256_t *chip = snd_pcm_substream_chip(substream);
626 snd_pcm_runtime_t *runtime = substream->runtime;
627 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data;
628
629 snd_assert(s, return -ENXIO);
630 s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size);
631 s->period_size = frames_to_bytes(runtime, substream->runtime->period_size);
632 s->periods = substream->runtime->periods;
633 s->cur_period = 0;
634
635 spin_lock_irq(&chip->reg_lock);
636 s->running = 0;
637 snd_nm256_set_format(chip, s, substream);
638 spin_unlock_irq(&chip->reg_lock);
639
640 return 0;
641}
642
643
644/*
645 * get the current pointer
646 */
647static snd_pcm_uframes_t
648snd_nm256_playback_pointer(snd_pcm_substream_t * substream)
649{
650 nm256_t *chip = snd_pcm_substream_chip(substream);
651 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data;
652 unsigned long curp;
653
654 snd_assert(s, return 0);
655 curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf;
656 curp %= s->dma_size;
657 return bytes_to_frames(substream->runtime, curp);
658}
659
660static snd_pcm_uframes_t
661snd_nm256_capture_pointer(snd_pcm_substream_t * substream)
662{
663 nm256_t *chip = snd_pcm_substream_chip(substream);
664 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data;
665 unsigned long curp;
666
667 snd_assert(s != NULL, return 0);
668 curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf;
669 curp %= s->dma_size;
670 return bytes_to_frames(substream->runtime, curp);
671}
672
673/* Remapped I/O space can be accessible as pointer on i386 */
674/* This might be changed in the future */
675#ifndef __i386__
676/*
677 * silence / copy for playback
678 */
679static int
680snd_nm256_playback_silence(snd_pcm_substream_t *substream,
681 int channel, /* not used (interleaved data) */
682 snd_pcm_uframes_t pos,
683 snd_pcm_uframes_t count)
684{
685 snd_pcm_runtime_t *runtime = substream->runtime;
686 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data;
687 count = frames_to_bytes(runtime, count);
688 pos = frames_to_bytes(runtime, pos);
689 memset_io(s->bufptr + pos, 0, count);
690 return 0;
691}
692
693static int
694snd_nm256_playback_copy(snd_pcm_substream_t *substream,
695 int channel, /* not used (interleaved data) */
696 snd_pcm_uframes_t pos,
697 void __user *src,
698 snd_pcm_uframes_t count)
699{
700 snd_pcm_runtime_t *runtime = substream->runtime;
701 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data;
702 count = frames_to_bytes(runtime, count);
703 pos = frames_to_bytes(runtime, pos);
704 if (copy_from_user_toio(s->bufptr + pos, src, count))
705 return -EFAULT;
706 return 0;
707}
708
709/*
710 * copy to user
711 */
712static int
713snd_nm256_capture_copy(snd_pcm_substream_t *substream,
714 int channel, /* not used (interleaved data) */
715 snd_pcm_uframes_t pos,
716 void __user *dst,
717 snd_pcm_uframes_t count)
718{
719 snd_pcm_runtime_t *runtime = substream->runtime;
720 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data;
721 count = frames_to_bytes(runtime, count);
722 pos = frames_to_bytes(runtime, pos);
723 if (copy_to_user_fromio(dst, s->bufptr + pos, count))
724 return -EFAULT;
725 return 0;
726}
727
728#endif /* !__i386__ */
729
730
731/*
732 * update playback/capture watermarks
733 */
734
735/* spinlock held! */
736static void
737snd_nm256_playback_update(nm256_t *chip)
738{
739 nm256_stream_t *s;
740
741 s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK];
742 if (s->running && s->substream) {
743 spin_unlock(&chip->reg_lock);
744 snd_pcm_period_elapsed(s->substream);
745 spin_lock(&chip->reg_lock);
746 snd_nm256_playback_mark(chip, s);
747 }
748}
749
750/* spinlock held! */
751static void
752snd_nm256_capture_update(nm256_t *chip)
753{
754 nm256_stream_t *s;
755
756 s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE];
757 if (s->running && s->substream) {
758 spin_unlock(&chip->reg_lock);
759 snd_pcm_period_elapsed(s->substream);
760 spin_lock(&chip->reg_lock);
761 snd_nm256_capture_mark(chip, s);
762 }
763}
764
765/*
766 * hardware info
767 */
768static snd_pcm_hardware_t snd_nm256_playback =
769{
770 .info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID |
771 SNDRV_PCM_INFO_INTERLEAVED |
772 /*SNDRV_PCM_INFO_PAUSE |*/
773 SNDRV_PCM_INFO_RESUME,
774 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
775 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
776 .rate_min = 8000,
777 .rate_max = 48000,
778 .channels_min = 1,
779 .channels_max = 2,
780 .periods_min = 2,
781 .periods_max = 1024,
782 .buffer_bytes_max = 128 * 1024,
783 .period_bytes_min = 256,
784 .period_bytes_max = 128 * 1024,
785};
786
787static snd_pcm_hardware_t snd_nm256_capture =
788{
789 .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID |
790 SNDRV_PCM_INFO_INTERLEAVED |
791 /*SNDRV_PCM_INFO_PAUSE |*/
792 SNDRV_PCM_INFO_RESUME,
793 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
794 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
795 .rate_min = 8000,
796 .rate_max = 48000,
797 .channels_min = 1,
798 .channels_max = 2,
799 .periods_min = 2,
800 .periods_max = 1024,
801 .buffer_bytes_max = 128 * 1024,
802 .period_bytes_min = 256,
803 .period_bytes_max = 128 * 1024,
804};
805
806
807/* set dma transfer size */
808static int snd_nm256_pcm_hw_params(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *hw_params)
809{
810 /* area and addr are already set and unchanged */
811 substream->runtime->dma_bytes = params_buffer_bytes(hw_params);
812 return 0;
813}
814
815/*
816 * open
817 */
818static void snd_nm256_setup_stream(nm256_t *chip, nm256_stream_t *s,
819 snd_pcm_substream_t *substream,
820 snd_pcm_hardware_t *hw_ptr)
821{
822 snd_pcm_runtime_t *runtime = substream->runtime;
823
824 s->running = 0;
825 runtime->hw = *hw_ptr;
826 runtime->hw.buffer_bytes_max = s->bufsize;
827 runtime->hw.period_bytes_max = s->bufsize / 2;
4d23359b 828 runtime->dma_area = (void __force *) s->bufptr;
1da177e4
LT		 829 runtime->dma_addr = s->bufptr_addr;
830 runtime->dma_bytes = s->bufsize;
831 runtime->private_data = s;
832 s->substream = substream;
833
834 snd_pcm_set_sync(substream);
835 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
836 &constraints_rates);
837}
838
839static int
840snd_nm256_playback_open(snd_pcm_substream_t *substream)
841{
842 nm256_t *chip = snd_pcm_substream_chip(substream);
843
1204de32
TI		 844 if (snd_nm256_acquire_irq(chip) < 0)
845 return -EBUSY;
1da177e4
LT		 846 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK],
847 substream, &snd_nm256_playback);
848 return 0;
849}
850
851static int
852snd_nm256_capture_open(snd_pcm_substream_t *substream)
853{
854 nm256_t *chip = snd_pcm_substream_chip(substream);
855
1204de32
TI		 856 if (snd_nm256_acquire_irq(chip) < 0)
857 return -EBUSY;
1da177e4
LT		 858 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE],
859 substream, &snd_nm256_capture);
860 return 0;
861}
862
863/*
864 * close - we don't have to do special..
865 */
866static int
867snd_nm256_playback_close(snd_pcm_substream_t *substream)
868{
1204de32
TI		 869 nm256_t *chip = snd_pcm_substream_chip(substream);
870
871 snd_nm256_release_irq(chip);
1da177e4
LT		 872 return 0;
873}
874
875
876static int
877snd_nm256_capture_close(snd_pcm_substream_t *substream)
878{
1204de32
TI		 879 nm256_t *chip = snd_pcm_substream_chip(substream);
880
881 snd_nm256_release_irq(chip);
1da177e4
LT		 882 return 0;
883}
884
885/*
886 * create a pcm instance
887 */
888static snd_pcm_ops_t snd_nm256_playback_ops = {
889 .open = snd_nm256_playback_open,
890 .close = snd_nm256_playback_close,
891 .ioctl = snd_pcm_lib_ioctl,
892 .hw_params = snd_nm256_pcm_hw_params,
893 .prepare = snd_nm256_pcm_prepare,
894 .trigger = snd_nm256_playback_trigger,
895 .pointer = snd_nm256_playback_pointer,
896#ifndef __i386__
897 .copy = snd_nm256_playback_copy,
898 .silence = snd_nm256_playback_silence,
899#endif
900 .mmap = snd_pcm_lib_mmap_iomem,
901};
902
903static snd_pcm_ops_t snd_nm256_capture_ops = {
904 .open = snd_nm256_capture_open,
905 .close = snd_nm256_capture_close,
906 .ioctl = snd_pcm_lib_ioctl,
907 .hw_params = snd_nm256_pcm_hw_params,
908 .prepare = snd_nm256_pcm_prepare,
909 .trigger = snd_nm256_capture_trigger,
910 .pointer = snd_nm256_capture_pointer,
911#ifndef __i386__
912 .copy = snd_nm256_capture_copy,
913#endif
914 .mmap = snd_pcm_lib_mmap_iomem,
915};
916
917static int __devinit
918snd_nm256_pcm(nm256_t *chip, int device)
919{
920 snd_pcm_t *pcm;
921 int i, err;
922
923 for (i = 0; i < 2; i++) {
924 nm256_stream_t *s = &chip->streams[i];
925 s->bufptr = chip->buffer + (s->buf - chip->buffer_start);
926 s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start);
927 }
928
929 err = snd_pcm_new(chip->card, chip->card->driver, device,
930 1, 1, &pcm);
931 if (err < 0)
932 return err;
933
934 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops);
935 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops);
936
937 pcm->private_data = chip;
938 pcm->info_flags = 0;
939 chip->pcm = pcm;
940
941 return 0;
942}
943
944
945/*
946 * Initialize the hardware.
947 */
948static void
949snd_nm256_init_chip(nm256_t *chip)
950{
1da177e4
LT		 951 /* Reset everything. */
952 snd_nm256_writeb(chip, 0x0, 0x11);
953 snd_nm256_writew(chip, 0x214, 0);
954 /* stop sounds.. */
955 //snd_nm256_playback_stop(chip);
956 //snd_nm256_capture_stop(chip);
1da177e4
LT		 957}
958
959
1204de32 960static irqreturn_t
1da177e4
LT		 961snd_nm256_intr_check(nm256_t *chip)
962{
963 if (chip->badintrcount++ > 1000) {
964 /*
965 * I'm not sure if the best thing is to stop the card from
966 * playing or just release the interrupt (after all, we're in
967 * a bad situation, so doing fancy stuff may not be such a good
968 * idea).
969 *
970 * I worry about the card engine continuing to play noise
971 * over and over, however--that could become a very
972 * obnoxious problem. And we know that when this usually
973 * happens things are fairly safe, it just means the user's
974 * inserted a PCMCIA card and someone's spamming us with IRQ 9s.
975 */
976 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
977 snd_nm256_playback_stop(chip);
978 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
979 snd_nm256_capture_stop(chip);
980 chip->badintrcount = 0;
1204de32 981 return IRQ_HANDLED;
1da177e4 982 }
1204de32 983 return IRQ_NONE;
1da177e4
LT		 984}
985
986/*
987 * Handle a potential interrupt for the device referred to by DEV_ID.
988 *
989 * I don't like the cut-n-paste job here either between the two routines,
990 * but there are sufficient differences between the two interrupt handlers
991 * that parameterizing it isn't all that great either. (Could use a macro,
992 * I suppose...yucky bleah.)
993 */
994
995static irqreturn_t
996snd_nm256_interrupt(int irq, void *dev_id, struct pt_regs *dummy)
997{
998 nm256_t *chip = dev_id;
999 u16 status;
1000 u8 cbyte;
1001
1002 status = snd_nm256_readw(chip, NM_INT_REG);
1003
1004 /* Not ours. */
1204de32
TI		 1005 if (status == 0)
1006 return snd_nm256_intr_check(chip);
1da177e4
LT		 1007
1008 chip->badintrcount = 0;
1009
1010 /* Rather boring; check for individual interrupts and process them. */
1011
1012 spin_lock(&chip->reg_lock);
1013 if (status & NM_PLAYBACK_INT) {
1014 status &= ~NM_PLAYBACK_INT;
1015 NM_ACK_INT(chip, NM_PLAYBACK_INT);
1016 snd_nm256_playback_update(chip);
1017 }
1018
1019 if (status & NM_RECORD_INT) {
1020 status &= ~NM_RECORD_INT;
1021 NM_ACK_INT(chip, NM_RECORD_INT);
1022 snd_nm256_capture_update(chip);
1023 }
1024
1025 if (status & NM_MISC_INT_1) {
1026 status &= ~NM_MISC_INT_1;
1027 NM_ACK_INT(chip, NM_MISC_INT_1);
1028 snd_printd("NM256: Got misc interrupt #1\n");
1029 snd_nm256_writew(chip, NM_INT_REG, 0x8000);
1030 cbyte = snd_nm256_readb(chip, 0x400);
1031 snd_nm256_writeb(chip, 0x400, cbyte | 2);
1032 }
1033
1034 if (status & NM_MISC_INT_2) {
1035 status &= ~NM_MISC_INT_2;
1036 NM_ACK_INT(chip, NM_MISC_INT_2);
1037 snd_printd("NM256: Got misc interrupt #2\n");
1038 cbyte = snd_nm256_readb(chip, 0x400);
1039 snd_nm256_writeb(chip, 0x400, cbyte & ~2);
1040 }
1041
1042 /* Unknown interrupt. */
1043 if (status) {
1044 snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n",
1045 status);
1046 /* Pray. */
1047 NM_ACK_INT(chip, status);
1048 }
1049
1050 spin_unlock(&chip->reg_lock);
1051 return IRQ_HANDLED;
1052}
1053
1054/*
1055 * Handle a potential interrupt for the device referred to by DEV_ID.
1056 * This handler is for the 256ZX, and is very similar to the non-ZX
1057 * routine.
1058 */
1059
1060static irqreturn_t
1061snd_nm256_interrupt_zx(int irq, void *dev_id, struct pt_regs *dummy)
1062{
1063 nm256_t *chip = dev_id;
1064 u32 status;
1065 u8 cbyte;
1066
1067 status = snd_nm256_readl(chip, NM_INT_REG);
1068
1069 /* Not ours. */
1204de32
TI		 1070 if (status == 0)
1071 return snd_nm256_intr_check(chip);
1da177e4
LT		 1072
1073 chip->badintrcount = 0;
1074
1075 /* Rather boring; check for individual interrupts and process them. */
1076
1077 spin_lock(&chip->reg_lock);
1078 if (status & NM2_PLAYBACK_INT) {
1079 status &= ~NM2_PLAYBACK_INT;
1080 NM2_ACK_INT(chip, NM2_PLAYBACK_INT);
1081 snd_nm256_playback_update(chip);
1082 }
1083
1084 if (status & NM2_RECORD_INT) {
1085 status &= ~NM2_RECORD_INT;
1086 NM2_ACK_INT(chip, NM2_RECORD_INT);
1087 snd_nm256_capture_update(chip);
1088 }
1089
1090 if (status & NM2_MISC_INT_1) {
1091 status &= ~NM2_MISC_INT_1;
1092 NM2_ACK_INT(chip, NM2_MISC_INT_1);
1093 snd_printd("NM256: Got misc interrupt #1\n");
1094 cbyte = snd_nm256_readb(chip, 0x400);
1095 snd_nm256_writeb(chip, 0x400, cbyte | 2);
1096 }
1097
1098 if (status & NM2_MISC_INT_2) {
1099 status &= ~NM2_MISC_INT_2;
1100 NM2_ACK_INT(chip, NM2_MISC_INT_2);
1101 snd_printd("NM256: Got misc interrupt #2\n");
1102 cbyte = snd_nm256_readb(chip, 0x400);
1103 snd_nm256_writeb(chip, 0x400, cbyte & ~2);
1104 }
1105
1106 /* Unknown interrupt. */
1107 if (status) {
1108 snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n",
1109 status);
1110 /* Pray. */
1111 NM2_ACK_INT(chip, status);
1112 }
1113
1114 spin_unlock(&chip->reg_lock);
1115 return IRQ_HANDLED;
1116}
1117
1118/*
1119 * AC97 interface
1120 */
1121
1122/*
1123 * Waits for the mixer to become ready to be written; returns a zero value
1124 * if it timed out.
1125 */
1126static int
1127snd_nm256_ac97_ready(nm256_t *chip)
1128{
1129 int timeout = 10;
1130 u32 testaddr;
1131 u16 testb;
1132
1133 testaddr = chip->mixer_status_offset;
1134 testb = chip->mixer_status_mask;
1135
1136 /*
1137 * Loop around waiting for the mixer to become ready.
1138 */
1139 while (timeout-- > 0) {
1140 if ((snd_nm256_readw(chip, testaddr) & testb) == 0)
1141 return 1;
1142 udelay(100);
1143 }
1144 return 0;
1145}
1146
1147/*
1148 */
1149static unsigned short
1150snd_nm256_ac97_read(ac97_t *ac97, unsigned short reg)
1151{
1152 nm256_t *chip = ac97->private_data;
1153 int res;
1154
1155 if (reg >= 128)
1156 return 0;
1157
1158 if (! snd_nm256_ac97_ready(chip))
1159 return 0;
1160 res = snd_nm256_readw(chip, chip->mixer_base + reg);
1161 /* Magic delay. Bleah yucky. */
1162 msleep(1);
1163 return res;
1164}
1165
1166/*
1167 */
1168static void
1169snd_nm256_ac97_write(ac97_t *ac97,
1170 unsigned short reg, unsigned short val)
1171{
1172 nm256_t *chip = ac97->private_data;
1173 int tries = 2;
1174 u32 base;
1175
1176 base = chip->mixer_base;
1177
1178 snd_nm256_ac97_ready(chip);
1179
1180 /* Wait for the write to take, too. */
1181 while (tries-- > 0) {
1182 snd_nm256_writew(chip, base + reg, val);
1183 msleep(1); /* a little delay here seems better.. */
1184 if (snd_nm256_ac97_ready(chip))
1185 return;
1186 }
1187 snd_printd("nm256: ac97 codec not ready..\n");
1188}
1189
1190/* initialize the ac97 into a known state */
1191static void
1192snd_nm256_ac97_reset(ac97_t *ac97)
1193{
1194 nm256_t *chip = ac97->private_data;
1195
1196 /* Reset the mixer. 'Tis magic! */
1197 snd_nm256_writeb(chip, 0x6c0, 1);
1198 if (! chip->reset_workaround) {
1199 /* Dell latitude LS will lock up by this */
1200 snd_nm256_writeb(chip, 0x6cc, 0x87);
1201 }
1202 snd_nm256_writeb(chip, 0x6cc, 0x80);
1203 snd_nm256_writeb(chip, 0x6cc, 0x0);
1204}
1205
1206/* create an ac97 mixer interface */
1207static int __devinit
1208snd_nm256_mixer(nm256_t *chip)
1209{
1210 ac97_bus_t *pbus;
1211 ac97_template_t ac97;
1212 int i, err;
1213 static ac97_bus_ops_t ops = {
1214 .reset = snd_nm256_ac97_reset,
1215 .write = snd_nm256_ac97_write,
1216 .read = snd_nm256_ac97_read,
1217 };
1218 /* looks like nm256 hangs up when unexpected registers are touched... */
1219 static int mixer_regs[] = {
1220 AC97_MASTER, AC97_HEADPHONE, AC97_MASTER_MONO,
1221 AC97_PC_BEEP, AC97_PHONE, AC97_MIC, AC97_LINE, AC97_CD,
1222 AC97_VIDEO, AC97_AUX, AC97_PCM, AC97_REC_SEL,
1223 AC97_REC_GAIN, AC97_GENERAL_PURPOSE, AC97_3D_CONTROL,
1204de32 1224 /*AC97_EXTENDED_ID,*/
1da177e4
LT		 1225 AC97_VENDOR_ID1, AC97_VENDOR_ID2,
1226 -1
1227 };
1228
1229 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
1230 return err;
1231
1232 memset(&ac97, 0, sizeof(ac97));
1233 ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */
1234 ac97.limited_regs = 1;
1235 for (i = 0; mixer_regs[i] >= 0; i++)
1236 set_bit(mixer_regs[i], ac97.reg_accessed);
1237 ac97.private_data = chip;
1204de32 1238 pbus->no_vra = 1;
1da177e4
LT		 1239 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97);
1240 if (err < 0)
1241 return err;
1242 if (! (chip->ac97->id & (0xf0000000))) {
1243 /* looks like an invalid id */
1244 sprintf(chip->card->mixername, "%s AC97", chip->card->driver);
1245 }
1246 return 0;
1247}
1248
1249/*
1250 * See if the signature left by the NM256 BIOS is intact; if so, we use
1251 * the associated address as the end of our audio buffer in the video
1252 * RAM.
1253 */
1254
1255static int __devinit
1256snd_nm256_peek_for_sig(nm256_t *chip)
1257{
1258 /* The signature is located 1K below the end of video RAM. */
1259 void __iomem *temp;
1260 /* Default buffer end is 5120 bytes below the top of RAM. */
1261 unsigned long pointer_found = chip->buffer_end - 0x1400;
1262 u32 sig;
1263
1264 temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16);
1265 if (temp == NULL) {
1266 snd_printk("Unable to scan for card signature in video RAM\n");
1267 return -EBUSY;
1268 }
1269
1270 sig = readl(temp);
1271 if ((sig & NM_SIG_MASK) == NM_SIGNATURE) {
1272 u32 pointer = readl(temp + 4);
1273
1274 /*
1275 * If it's obviously invalid, don't use it
1276 */
1277 if (pointer == 0xffffffff ||
1278 pointer < chip->buffer_size ||
1279 pointer > chip->buffer_end) {
1280 snd_printk("invalid signature found: 0x%x\n", pointer);
1281 iounmap(temp);
1282 return -ENODEV;
1283 } else {
1284 pointer_found = pointer;
1285 printk(KERN_INFO "nm256: found card signature in video RAM: 0x%x\n", pointer);
1286 }
1287 }
1288
1289 iounmap(temp);
1290 chip->buffer_end = pointer_found;
1291
1292 return 0;
1293}
1294
1295#ifdef CONFIG_PM
1296/*
1297 * APM event handler, so the card is properly reinitialized after a power
1298 * event.
1299 */
1300static int nm256_suspend(snd_card_t *card, pm_message_t state)
1301{
1302 nm256_t *chip = card->pm_private_data;
1303
1304 snd_pcm_suspend_all(chip->pcm);
1305 snd_ac97_suspend(chip->ac97);
1306 chip->coeffs_current = 0;
1307 pci_disable_device(chip->pci);
1308 return 0;
1309}
1310
1311static int nm256_resume(snd_card_t *card)
1312{
1313 nm256_t *chip = card->pm_private_data;
1204de32 1314 int i;
1da177e4
LT		 1315
1316 /* Perform a full reset on the hardware */
1317 pci_enable_device(chip->pci);
1318 snd_nm256_init_chip(chip);
1319
1320 /* restore ac97 */
1321 snd_ac97_resume(chip->ac97);
1322
1204de32
TI		 1323 for (i = 0; i < 2; i++) {
1324 nm256_stream_t *s = &chip->streams[i];
1325 if (s->substream && s->suspended) {
1326 spin_lock_irq(&chip->reg_lock);
1327 snd_nm256_set_format(chip, s, s->substream);
1328 spin_unlock_irq(&chip->reg_lock);
1329 }
1330 }
1331
1da177e4
LT		 1332 return 0;
1333}
1334#endif /* CONFIG_PM */
1335
1336static int snd_nm256_free(nm256_t *chip)
1337{
1338 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
1339 snd_nm256_playback_stop(chip);
1340 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
1341 snd_nm256_capture_stop(chip);
1342
1343 if (chip->irq >= 0)
1344 synchronize_irq(chip->irq);
1345
1346 if (chip->cport)
1347 iounmap(chip->cport);
1348 if (chip->buffer)
1349 iounmap(chip->buffer);
1350 if (chip->res_cport) {
1351 release_resource(chip->res_cport);
1352 kfree_nocheck(chip->res_cport);
1353 }
1354 if (chip->res_buffer) {
1355 release_resource(chip->res_buffer);
1356 kfree_nocheck(chip->res_buffer);
1357 }
1358 if (chip->irq >= 0)
1359 free_irq(chip->irq, (void*)chip);
1360
1361 pci_disable_device(chip->pci);
1362 kfree(chip);
1363 return 0;
1364}
1365
1366static int snd_nm256_dev_free(snd_device_t *device)
1367{
1368 nm256_t *chip = device->device_data;
1369 return snd_nm256_free(chip);
1370}
1371
1372static int __devinit
1373snd_nm256_create(snd_card_t *card, struct pci_dev *pci,
1374 int play_bufsize, int capt_bufsize,
1375 int force_load,
1376 u32 buffertop,
1377 int usecache,
1378 nm256_t **chip_ret)
1379{
1380 nm256_t *chip;
1381 int err, pval;
1382 static snd_device_ops_t ops = {
1383 .dev_free = snd_nm256_dev_free,
1384 };
1385 u32 addr;
1386
1387 *chip_ret = NULL;
1388
1389 if ((err = pci_enable_device(pci)) < 0)
1390 return err;
1391
1392 chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
1393 if (chip == NULL) {
1394 pci_disable_device(pci);
1395 return -ENOMEM;
1396 }
1397
1398 chip->card = card;
1399 chip->pci = pci;
1400 chip->use_cache = usecache;
1401 spin_lock_init(&chip->reg_lock);
1402 chip->irq = -1;
1204de32 1403 init_MUTEX(&chip->irq_mutex);
1da177e4
LT		 1404
1405 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = play_bufsize;
1406 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capt_bufsize;
1407
1408 /*
1409 * The NM256 has two memory ports. The first port is nothing
1410 * more than a chunk of video RAM, which is used as the I/O ring
1411 * buffer. The second port has the actual juicy stuff (like the
1412 * mixer and the playback engine control registers).
1413 */
1414
1415 chip->buffer_addr = pci_resource_start(pci, 0);
1416 chip->cport_addr = pci_resource_start(pci, 1);
1417
1418 /* Init the memory port info. */
1419 /* remap control port (#2) */
1420 chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE,
1421 card->driver);
1422 if (chip->res_cport == NULL) {
1423 snd_printk("memory region 0x%lx (size 0x%x) busy\n",
1424 chip->cport_addr, NM_PORT2_SIZE);
1425 err = -EBUSY;
1426 goto __error;
1427 }
1428 chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE);
1429 if (chip->cport == NULL) {
1430 snd_printk("unable to map control port %lx\n", chip->cport_addr);
1431 err = -ENOMEM;
1432 goto __error;
1433 }
1434
1435 if (!strcmp(card->driver, "NM256AV")) {
1436 /* Ok, try to see if this is a non-AC97 version of the hardware. */
1437 pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE);
1438 if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) {
1439 if (! force_load) {
1440 printk(KERN_ERR "nm256: no ac97 is found!\n");
1441 printk(KERN_ERR " force the driver to load by passing in the module parameter\n");
1442 printk(KERN_ERR " force_ac97=1\n");
1443 printk(KERN_ERR " or try sb16 or cs423x drivers instead.\n");
1444 err = -ENXIO;
1445 goto __error;
1446 }
1447 }
1448 chip->buffer_end = 2560 * 1024;
1449 chip->interrupt = snd_nm256_interrupt;
1450 chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET;
1451 chip->mixer_status_mask = NM_MIXER_READY_MASK;
1452 } else {
1453 /* Not sure if there is any relevant detect for the ZX or not. */
1454 if (snd_nm256_readb(chip, 0xa0b) != 0)
1455 chip->buffer_end = 6144 * 1024;
1456 else
1457 chip->buffer_end = 4096 * 1024;
1458
1459 chip->interrupt = snd_nm256_interrupt_zx;
1460 chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET;
1461 chip->mixer_status_mask = NM2_MIXER_READY_MASK;
1462 }
1463
1464 chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize + chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
1465 if (chip->use_cache)
1466 chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4;
1467 else
1468 chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE;
1469
1470 if (buffertop >= chip->buffer_size && buffertop < chip->buffer_end)
1471 chip->buffer_end = buffertop;
1472 else {
1473 /* get buffer end pointer from signature */
1474 if ((err = snd_nm256_peek_for_sig(chip)) < 0)
1475 goto __error;
1476 }
1477
1478 chip->buffer_start = chip->buffer_end - chip->buffer_size;
1479 chip->buffer_addr += chip->buffer_start;
1480
1481 printk(KERN_INFO "nm256: Mapping port 1 from 0x%x - 0x%x\n",
1482 chip->buffer_start, chip->buffer_end);
1483
1484 chip->res_buffer = request_mem_region(chip->buffer_addr,
1485 chip->buffer_size,
1486 card->driver);
1487 if (chip->res_buffer == NULL) {
1488 snd_printk("nm256: buffer 0x%lx (size 0x%x) busy\n",
1489 chip->buffer_addr, chip->buffer_size);
1490 err = -EBUSY;
1491 goto __error;
1492 }
1493 chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size);
1494 if (chip->buffer == NULL) {
1495 err = -ENOMEM;
1496 snd_printk("unable to map ring buffer at %lx\n", chip->buffer_addr);
1497 goto __error;
1498 }
1499
1500 /* set offsets */
1501 addr = chip->buffer_start;
1502 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr;
1503 addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize;
1504 chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr;
1505 addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
1506 if (chip->use_cache) {
1507 chip->all_coeff_buf = addr;
1508 } else {
1509 chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr;
1510 addr += NM_MAX_PLAYBACK_COEF_SIZE;
1511 chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr;
1512 }
1513
1da177e4
LT		 1514 /* Fixed setting. */
1515 chip->mixer_base = NM_MIXER_OFFSET;
1516
1517 chip->coeffs_current = 0;
1518
1519 snd_nm256_init_chip(chip);
1520
1521 // pci_set_master(pci); /* needed? */
1522
1523 snd_card_set_pm_callback(card, nm256_suspend, nm256_resume, chip);
1524
1525 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
1526 goto __error;
1527
1528 snd_card_set_dev(card, &pci->dev);
1529
1530 *chip_ret = chip;
1531 return 0;
1532
1533__error:
1534 snd_nm256_free(chip);
1535 return err;
1536}
1537
1538
1539struct nm256_quirk {
1540 unsigned short vendor;
1541 unsigned short device;
1542 int type;
1543};
1544
1545enum { NM_BLACKLISTED, NM_RESET_WORKAROUND };
1546
1547static struct nm256_quirk nm256_quirks[] __devinitdata = {
1548 /* HP omnibook 4150 has cs4232 codec internally */
1549 { .vendor = 0x103c, .device = 0x0007, .type = NM_BLACKLISTED },
1550 /* Sony PCG-F305 */
1551 { .vendor = 0x104d, .device = 0x8041, .type = NM_RESET_WORKAROUND },
1552 /* Dell Latitude LS */
1553 { .vendor = 0x1028, .device = 0x0080, .type = NM_RESET_WORKAROUND },
1554 { } /* terminator */
1555};
1556
1557
1558static int __devinit snd_nm256_probe(struct pci_dev *pci,
1559 const struct pci_device_id *pci_id)
1560{
1561 static int dev;
1562 snd_card_t *card;
1563 nm256_t *chip;
1564 int err;
1565 unsigned int xbuffer_top;
1566 struct nm256_quirk *q;
1567 u16 subsystem_vendor, subsystem_device;
1568
1569 if (dev >= SNDRV_CARDS)
1570 return -ENODEV;
1571 if (!enable[dev]) {
1572 dev++;
1573 return -ENOENT;
1574 }
1575
1576 pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
1577 pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
1578
1579 for (q = nm256_quirks; q->vendor; q++) {
1580 if (q->vendor == subsystem_vendor && q->device == subsystem_device) {
1581 switch (q->type) {
1582 case NM_BLACKLISTED:
1583 printk(KERN_INFO "nm256: The device is blacklisted. Loading stopped\n");
1584 return -ENODEV;
1585 case NM_RESET_WORKAROUND:
1586 reset_workaround[dev] = 1;
1587 break;
1588 }
1589 }
1590 }
1591
1592 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1593 if (card == NULL)
1594 return -ENOMEM;
1595
1596 switch (pci->device) {
1597 case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO:
1598 strcpy(card->driver, "NM256AV");
1599 break;
1600 case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO:
1601 strcpy(card->driver, "NM256ZX");
1602 break;
1603 case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO:
1604 strcpy(card->driver, "NM256XL+");
1605 break;
1606 default:
1607 snd_printk("invalid device id 0x%x\n", pci->device);
1608 snd_card_free(card);
1609 return -EINVAL;
1610 }
1611
1612 if (vaio_hack[dev])
1613 xbuffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */
1614 else
1615 xbuffer_top = buffer_top[dev];
1616
1617 if (playback_bufsize[dev] < 4)
1618 playback_bufsize[dev] = 4;
1619 if (playback_bufsize[dev] > 128)
1620 playback_bufsize[dev] = 128;
1621 if (capture_bufsize[dev] < 4)
1622 capture_bufsize[dev] = 4;
1623 if (capture_bufsize[dev] > 128)
1624 capture_bufsize[dev] = 128;
1625 if ((err = snd_nm256_create(card, pci,
1626 playback_bufsize[dev] * 1024, /* in bytes */
1627 capture_bufsize[dev] * 1024, /* in bytes */
1628 force_ac97[dev],
1629 xbuffer_top,
1630 use_cache[dev],
1631 &chip)) < 0) {
1632 snd_card_free(card);
1633 return err;
1634 }
1635
1636 if (reset_workaround[dev]) {
1637 snd_printdd(KERN_INFO "nm256: reset_workaround activated\n");
1638 chip->reset_workaround = 1;
1639 }
1640
1641 if ((err = snd_nm256_pcm(chip, 0)) < 0 ||
1642 (err = snd_nm256_mixer(chip)) < 0) {
1643 snd_card_free(card);
1644 return err;
1645 }
1646
1647 sprintf(card->shortname, "NeoMagic %s", card->driver);
1648 sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d",
1649 card->shortname,
1650 chip->buffer_addr, chip->cport_addr, chip->irq);
1651
1652 if ((err = snd_card_register(card)) < 0) {
1653 snd_card_free(card);
1654 return err;
1655 }
1656
1657 pci_set_drvdata(pci, card);
1658 dev++;
1659 return 0;
1660}
1661
1662static void __devexit snd_nm256_remove(struct pci_dev *pci)
1663{
1664 snd_card_free(pci_get_drvdata(pci));
1665 pci_set_drvdata(pci, NULL);
1666}
1667
1668
1669static struct pci_driver driver = {
1670 .name = "NeoMagic 256",
1671 .id_table = snd_nm256_ids,
1672 .probe = snd_nm256_probe,
1673 .remove = __devexit_p(snd_nm256_remove),
1674 SND_PCI_PM_CALLBACKS
1675};
1676
1677
1678static int __init alsa_card_nm256_init(void)
1679{
01d25d46 1680 return pci_register_driver(&driver);
1da177e4
LT		 1681}
1682
1683static void __exit alsa_card_nm256_exit(void)
1684{
1685 pci_unregister_driver(&driver);
1686}
1687
1688module_init(alsa_card_nm256_init)
1689module_exit(alsa_card_nm256_exit)
Linux kernel - Deliverables
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