Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Audio driver for the NeoMagic 256AV and 256ZX chipsets in native | |
3 | * mode, with AC97 mixer support. | |
4 | * | |
5 | * Overall design and parts of this code stolen from vidc_*.c and | |
6 | * skeleton.c. | |
7 | * | |
8 | * Yeah, there are a lot of magic constants in here. You tell ME what | |
9 | * they are. I just get this stuff psychically, remember? | |
10 | * | |
11 | * This driver was written by someone who wishes to remain anonymous. | |
12 | * It is in the public domain, so share and enjoy. Try to make a profit | |
13 | * off of it; go on, I dare you. | |
14 | * | |
15 | * Changes: | |
16 | * 11-10-2000 Bartlomiej Zolnierkiewicz <bkz@linux-ide.org> | |
17 | * Added some __init | |
18 | * 19-04-2001 Marcus Meissner <mm@caldera.de> | |
19 | * Ported to 2.4 PCI API. | |
20 | */ | |
21 | ||
22 | #include <linux/pci.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/pm.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/spinlock.h> | |
30 | #include "sound_config.h" | |
1da177e4 | 31 | |
155542c2 | 32 | static int nm256_debug; |
1da177e4 LT |
33 | static int force_load; |
34 | ||
4f00945a DJ |
35 | #include "nm256.h" |
36 | #include "nm256_coeff.h" | |
37 | ||
1da177e4 LT |
38 | /* |
39 | * The size of the playback reserve. When the playback buffer has less | |
40 | * than NM256_PLAY_WMARK_SIZE bytes to output, we request a new | |
41 | * buffer. | |
42 | */ | |
43 | #define NM256_PLAY_WMARK_SIZE 512 | |
44 | ||
45 | static struct audio_driver nm256_audio_driver; | |
46 | ||
47 | static int nm256_grabInterrupt (struct nm256_info *card); | |
48 | static int nm256_releaseInterrupt (struct nm256_info *card); | |
49 | static irqreturn_t nm256_interrupt (int irq, void *dev_id, struct pt_regs *dummy); | |
50 | static irqreturn_t nm256_interrupt_zx (int irq, void *dev_id, struct pt_regs *dummy); | |
51 | static int handle_pm_event (struct pm_dev *dev, pm_request_t rqst, void *data); | |
52 | ||
53 | /* These belong in linux/pci.h. */ | |
54 | #define PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO 0x8005 | |
55 | #define PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO 0x8006 | |
56 | #define PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO 0x8016 | |
57 | ||
58 | /* List of cards. */ | |
59 | static struct nm256_info *nmcard_list; | |
60 | ||
61 | /* Release the mapped-in memory for CARD. */ | |
62 | static void | |
63 | nm256_release_ports (struct nm256_info *card) | |
64 | { | |
65 | int x; | |
66 | ||
67 | for (x = 0; x < 2; x++) { | |
68 | if (card->port[x].ptr != NULL) { | |
69 | iounmap (card->port[x].ptr); | |
70 | card->port[x].ptr = NULL; | |
71 | } | |
72 | } | |
73 | } | |
74 | ||
75 | /* | |
76 | * Map in the memory ports for CARD, if they aren't already mapped in | |
77 | * and have been configured. If successful, a zero value is returned; | |
78 | * otherwise any previously mapped-in areas are released and a non-zero | |
79 | * value is returned. | |
80 | * | |
81 | * This is invoked twice, once for each port. Ideally it would only be | |
82 | * called once, but we now need to map in the second port in order to | |
83 | * check how much memory the card has on the 256ZX. | |
84 | */ | |
85 | static int | |
86 | nm256_remap_ports (struct nm256_info *card) | |
87 | { | |
88 | int x; | |
89 | ||
90 | for (x = 0; x < 2; x++) { | |
91 | if (card->port[x].ptr == NULL && card->port[x].end_offset > 0) { | |
92 | u32 physaddr | |
93 | = card->port[x].physaddr + card->port[x].start_offset; | |
94 | u32 size | |
95 | = card->port[x].end_offset - card->port[x].start_offset; | |
96 | ||
97 | card->port[x].ptr = ioremap_nocache (physaddr, size); | |
98 | ||
99 | if (card->port[x].ptr == NULL) { | |
100 | printk (KERN_ERR "NM256: Unable to remap port %d\n", x + 1); | |
101 | nm256_release_ports (card); | |
102 | return -1; | |
103 | } | |
104 | } | |
105 | } | |
106 | return 0; | |
107 | } | |
108 | ||
109 | /* Locate the card in our list. */ | |
110 | static struct nm256_info * | |
111 | nm256_find_card (int dev) | |
112 | { | |
113 | struct nm256_info *card; | |
114 | ||
115 | for (card = nmcard_list; card != NULL; card = card->next_card) | |
116 | if (card->dev[0] == dev || card->dev[1] == dev) | |
117 | return card; | |
118 | ||
119 | return NULL; | |
120 | } | |
121 | ||
122 | /* | |
123 | * Ditto, but find the card struct corresponding to the mixer device DEV | |
124 | * instead. | |
125 | */ | |
126 | static struct nm256_info * | |
127 | nm256_find_card_for_mixer (int dev) | |
128 | { | |
129 | struct nm256_info *card; | |
130 | ||
131 | for (card = nmcard_list; card != NULL; card = card->next_card) | |
132 | if (card->mixer_oss_dev == dev) | |
133 | return card; | |
134 | ||
135 | return NULL; | |
136 | } | |
137 | ||
138 | static int usecache; | |
139 | static int buffertop; | |
140 | ||
141 | /* Check to see if we're using the bank of cached coefficients. */ | |
155542c2 | 142 | static int |
1da177e4 LT |
143 | nm256_cachedCoefficients (struct nm256_info *card) |
144 | { | |
145 | return usecache; | |
146 | } | |
147 | ||
148 | /* The actual rates supported by the card. */ | |
149 | static int samplerates[9] = { | |
150 | 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, 99999999 | |
151 | }; | |
152 | ||
153 | /* | |
154 | * Set the card samplerate, word size and stereo mode to correspond to | |
155 | * the settings in the CARD struct for the specified device in DEV. | |
156 | * We keep two separate sets of information, one for each device; the | |
157 | * hardware is not actually configured until a read or write is | |
158 | * attempted. | |
159 | */ | |
160 | ||
161 | static int | |
162 | nm256_setInfo (int dev, struct nm256_info *card) | |
163 | { | |
164 | int x; | |
165 | int w; | |
166 | int targetrate; | |
167 | ||
168 | if (card->dev[0] == dev) | |
169 | w = 0; | |
170 | else if (card->dev[1] == dev) | |
171 | w = 1; | |
172 | else | |
173 | return -ENODEV; | |
174 | ||
175 | targetrate = card->sinfo[w].samplerate; | |
176 | ||
177 | if ((card->sinfo[w].bits != 8 && card->sinfo[w].bits != 16) | |
178 | || targetrate < samplerates[0] | |
179 | || targetrate > samplerates[7]) | |
180 | return -EINVAL; | |
181 | ||
182 | for (x = 0; x < 8; x++) | |
183 | if (targetrate < ((samplerates[x] + samplerates[x + 1]) / 2)) | |
184 | break; | |
185 | ||
186 | if (x < 8) { | |
187 | u8 ratebits = ((x << 4) & NM_RATE_MASK); | |
188 | if (card->sinfo[w].bits == 16) | |
189 | ratebits |= NM_RATE_BITS_16; | |
190 | if (card->sinfo[w].stereo) | |
191 | ratebits |= NM_RATE_STEREO; | |
192 | ||
193 | card->sinfo[w].samplerate = samplerates[x]; | |
194 | ||
195 | ||
196 | if (card->dev_for_play == dev && card->playing) { | |
197 | if (nm256_debug) | |
198 | printk (KERN_DEBUG "Setting play ratebits to 0x%x\n", | |
199 | ratebits); | |
200 | nm256_loadCoefficient (card, 0, x); | |
201 | nm256_writePort8 (card, 2, | |
202 | NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET, | |
203 | ratebits); | |
204 | } | |
205 | ||
206 | if (card->dev_for_record == dev && card->recording) { | |
207 | if (nm256_debug) | |
208 | printk (KERN_DEBUG "Setting record ratebits to 0x%x\n", | |
209 | ratebits); | |
210 | nm256_loadCoefficient (card, 1, x); | |
211 | nm256_writePort8 (card, 2, | |
212 | NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET, | |
213 | ratebits); | |
214 | } | |
215 | return 0; | |
216 | } | |
217 | else | |
218 | return -EINVAL; | |
219 | } | |
220 | ||
221 | /* Start the play process going. */ | |
222 | static void | |
223 | startPlay (struct nm256_info *card) | |
224 | { | |
225 | if (! card->playing) { | |
226 | card->playing = 1; | |
227 | if (nm256_grabInterrupt (card) == 0) { | |
228 | nm256_setInfo (card->dev_for_play, card); | |
229 | ||
230 | /* Enable playback engine and interrupts. */ | |
231 | nm256_writePort8 (card, 2, NM_PLAYBACK_ENABLE_REG, | |
232 | NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN); | |
233 | ||
234 | /* Enable both channels. */ | |
235 | nm256_writePort16 (card, 2, NM_AUDIO_MUTE_REG, 0x0); | |
236 | } | |
237 | } | |
238 | } | |
239 | ||
240 | /* | |
241 | * Request one chunk of AMT bytes from the recording device. When the | |
242 | * operation is complete, the data will be copied into BUFFER and the | |
243 | * function DMAbuf_inputintr will be invoked. | |
244 | */ | |
245 | ||
246 | static void | |
247 | nm256_startRecording (struct nm256_info *card, char *buffer, u32 amt) | |
248 | { | |
249 | u32 endpos; | |
250 | int enableEngine = 0; | |
251 | u32 ringsize = card->recordBufferSize; | |
252 | unsigned long flags; | |
253 | ||
254 | if (amt > (ringsize / 2)) { | |
255 | /* | |
256 | * Of course this won't actually work right, because the | |
257 | * caller is going to assume we will give what we got asked | |
258 | * for. | |
259 | */ | |
260 | printk (KERN_ERR "NM256: Read request too large: %d\n", amt); | |
261 | amt = ringsize / 2; | |
262 | } | |
263 | ||
264 | if (amt < 8) { | |
265 | printk (KERN_ERR "NM256: Read request too small; %d\n", amt); | |
266 | return; | |
267 | } | |
268 | ||
269 | spin_lock_irqsave(&card->lock,flags); | |
270 | /* | |
271 | * If we're not currently recording, set up the start and end registers | |
272 | * for the recording engine. | |
273 | */ | |
274 | if (! card->recording) { | |
275 | card->recording = 1; | |
276 | if (nm256_grabInterrupt (card) == 0) { | |
277 | card->curRecPos = 0; | |
278 | nm256_setInfo (card->dev_for_record, card); | |
279 | nm256_writePort32 (card, 2, NM_RBUFFER_START, card->abuf2); | |
280 | nm256_writePort32 (card, 2, NM_RBUFFER_END, | |
281 | card->abuf2 + ringsize); | |
282 | ||
283 | nm256_writePort32 (card, 2, NM_RBUFFER_CURRP, | |
284 | card->abuf2 + card->curRecPos); | |
285 | enableEngine = 1; | |
286 | } | |
287 | else { | |
288 | /* Not sure what else to do here. */ | |
289 | spin_unlock_irqrestore(&card->lock,flags); | |
290 | return; | |
291 | } | |
292 | } | |
293 | ||
294 | /* | |
295 | * If we happen to go past the end of the buffer a bit (due to a | |
296 | * delayed interrupt) it's OK. So might as well set the watermark | |
297 | * right at the end of the data we want. | |
298 | */ | |
299 | endpos = card->abuf2 + ((card->curRecPos + amt) % ringsize); | |
300 | ||
301 | card->recBuf = buffer; | |
302 | card->requestedRecAmt = amt; | |
303 | nm256_writePort32 (card, 2, NM_RBUFFER_WMARK, endpos); | |
304 | /* Enable recording engine and interrupts. */ | |
305 | if (enableEngine) | |
306 | nm256_writePort8 (card, 2, NM_RECORD_ENABLE_REG, | |
307 | NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN); | |
308 | ||
309 | spin_unlock_irqrestore(&card->lock,flags); | |
310 | } | |
311 | ||
312 | /* Stop the play engine. */ | |
313 | static void | |
314 | stopPlay (struct nm256_info *card) | |
315 | { | |
316 | /* Shut off sound from both channels. */ | |
317 | nm256_writePort16 (card, 2, NM_AUDIO_MUTE_REG, | |
318 | NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT); | |
319 | /* Disable play engine. */ | |
320 | nm256_writePort8 (card, 2, NM_PLAYBACK_ENABLE_REG, 0); | |
321 | if (card->playing) { | |
322 | nm256_releaseInterrupt (card); | |
323 | ||
324 | /* Reset the relevant state bits. */ | |
325 | card->playing = 0; | |
326 | card->curPlayPos = 0; | |
327 | } | |
328 | } | |
329 | ||
330 | /* Stop recording. */ | |
331 | static void | |
332 | stopRecord (struct nm256_info *card) | |
333 | { | |
334 | /* Disable recording engine. */ | |
335 | nm256_writePort8 (card, 2, NM_RECORD_ENABLE_REG, 0); | |
336 | ||
337 | if (card->recording) { | |
338 | nm256_releaseInterrupt (card); | |
339 | ||
340 | card->recording = 0; | |
341 | card->curRecPos = 0; | |
342 | } | |
343 | } | |
344 | ||
345 | /* | |
346 | * Ring buffers, man. That's where the hip-hop, wild-n-wooly action's at. | |
347 | * 1972? (Well, I suppose it was cheep-n-easy to implement.) | |
348 | * | |
349 | * Write AMT bytes of BUFFER to the playback ring buffer, and start the | |
350 | * playback engine running. It will only accept up to 1/2 of the total | |
351 | * size of the ring buffer. No check is made that we're about to overwrite | |
352 | * the currently-playing sample. | |
353 | */ | |
354 | ||
355 | static void | |
356 | nm256_write_block (struct nm256_info *card, char *buffer, u32 amt) | |
357 | { | |
358 | u32 ringsize = card->playbackBufferSize; | |
359 | u32 endstop; | |
360 | unsigned long flags; | |
361 | ||
362 | if (amt > (ringsize / 2)) { | |
363 | printk (KERN_ERR "NM256: Write request too large: %d\n", amt); | |
364 | amt = (ringsize / 2); | |
365 | } | |
366 | ||
367 | if (amt < NM256_PLAY_WMARK_SIZE) { | |
368 | printk (KERN_ERR "NM256: Write request too small: %d\n", amt); | |
369 | return; | |
370 | } | |
371 | ||
372 | card->curPlayPos %= ringsize; | |
373 | ||
374 | card->requested_amt = amt; | |
375 | ||
376 | spin_lock_irqsave(&card->lock,flags); | |
377 | ||
378 | if ((card->curPlayPos + amt) >= ringsize) { | |
379 | u32 rem = ringsize - card->curPlayPos; | |
380 | ||
381 | nm256_writeBuffer8 (card, buffer, 1, | |
382 | card->abuf1 + card->curPlayPos, | |
383 | rem); | |
384 | if (amt > rem) | |
385 | nm256_writeBuffer8 (card, buffer + rem, 1, card->abuf1, | |
386 | amt - rem); | |
387 | } | |
388 | else | |
389 | nm256_writeBuffer8 (card, buffer, 1, | |
390 | card->abuf1 + card->curPlayPos, | |
391 | amt); | |
392 | ||
393 | /* | |
394 | * Setup the start-n-stop-n-limit registers, and start that engine | |
395 | * goin'. | |
396 | * | |
397 | * Normally we just let it wrap around to avoid the click-click | |
398 | * action scene. | |
399 | */ | |
400 | if (! card->playing) { | |
401 | /* The PBUFFER_END register in this case points to one sample | |
402 | before the end of the buffer. */ | |
403 | int w = (card->dev_for_play == card->dev[0] ? 0 : 1); | |
404 | int sampsize = (card->sinfo[w].bits == 16 ? 2 : 1); | |
405 | ||
406 | if (card->sinfo[w].stereo) | |
407 | sampsize *= 2; | |
408 | ||
409 | /* Need to set the not-normally-changing-registers up. */ | |
410 | nm256_writePort32 (card, 2, NM_PBUFFER_START, | |
411 | card->abuf1 + card->curPlayPos); | |
412 | nm256_writePort32 (card, 2, NM_PBUFFER_END, | |
413 | card->abuf1 + ringsize - sampsize); | |
414 | nm256_writePort32 (card, 2, NM_PBUFFER_CURRP, | |
415 | card->abuf1 + card->curPlayPos); | |
416 | } | |
417 | endstop = (card->curPlayPos + amt - NM256_PLAY_WMARK_SIZE) % ringsize; | |
418 | nm256_writePort32 (card, 2, NM_PBUFFER_WMARK, card->abuf1 + endstop); | |
419 | ||
420 | if (! card->playing) | |
421 | startPlay (card); | |
422 | ||
423 | spin_unlock_irqrestore(&card->lock,flags); | |
424 | } | |
425 | ||
426 | /* We just got a card playback interrupt; process it. */ | |
427 | static void | |
428 | nm256_get_new_block (struct nm256_info *card) | |
429 | { | |
430 | /* Check to see how much got played so far. */ | |
431 | u32 amt = nm256_readPort32 (card, 2, NM_PBUFFER_CURRP) - card->abuf1; | |
432 | ||
433 | if (amt >= card->playbackBufferSize) { | |
434 | printk (KERN_ERR "NM256: Sound playback pointer invalid!\n"); | |
435 | amt = 0; | |
436 | } | |
437 | ||
438 | if (amt < card->curPlayPos) | |
439 | amt = (card->playbackBufferSize - card->curPlayPos) + amt; | |
440 | else | |
441 | amt -= card->curPlayPos; | |
442 | ||
443 | if (card->requested_amt > (amt + NM256_PLAY_WMARK_SIZE)) { | |
444 | u32 endstop = | |
445 | card->curPlayPos + card->requested_amt - NM256_PLAY_WMARK_SIZE; | |
446 | nm256_writePort32 (card, 2, NM_PBUFFER_WMARK, card->abuf1 + endstop); | |
447 | } | |
448 | else { | |
449 | card->curPlayPos += card->requested_amt; | |
450 | /* Get a new block to write. This will eventually invoke | |
451 | nm256_write_block () or stopPlay (). */ | |
452 | DMAbuf_outputintr (card->dev_for_play, 1); | |
453 | } | |
454 | } | |
455 | ||
456 | /* | |
457 | * Read the last-recorded block from the ring buffer, copy it into the | |
458 | * saved buffer pointer, and invoke DMAuf_inputintr() with the recording | |
459 | * device. | |
460 | */ | |
461 | ||
462 | static void | |
463 | nm256_read_block (struct nm256_info *card) | |
464 | { | |
465 | /* Grab the current position of the recording pointer. */ | |
466 | u32 currptr = nm256_readPort32 (card, 2, NM_RBUFFER_CURRP) - card->abuf2; | |
467 | u32 amtToRead = card->requestedRecAmt; | |
468 | u32 ringsize = card->recordBufferSize; | |
469 | ||
470 | if (currptr >= card->recordBufferSize) { | |
471 | printk (KERN_ERR "NM256: Sound buffer record pointer invalid!\n"); | |
472 | currptr = 0; | |
473 | } | |
474 | ||
475 | /* | |
476 | * This test is probably redundant; we shouldn't be here unless | |
477 | * it's true. | |
478 | */ | |
479 | if (card->recording) { | |
480 | /* If we wrapped around, copy everything from the start of our | |
481 | recording buffer to the end of the buffer. */ | |
482 | if (currptr < card->curRecPos) { | |
483 | u32 amt = min (ringsize - card->curRecPos, amtToRead); | |
484 | ||
485 | nm256_readBuffer8 (card, card->recBuf, 1, | |
486 | card->abuf2 + card->curRecPos, | |
487 | amt); | |
488 | amtToRead -= amt; | |
489 | card->curRecPos += amt; | |
490 | card->recBuf += amt; | |
491 | if (card->curRecPos == ringsize) | |
492 | card->curRecPos = 0; | |
493 | } | |
494 | ||
495 | if ((card->curRecPos < currptr) && (amtToRead > 0)) { | |
496 | u32 amt = min (currptr - card->curRecPos, amtToRead); | |
497 | nm256_readBuffer8 (card, card->recBuf, 1, | |
498 | card->abuf2 + card->curRecPos, amt); | |
499 | card->curRecPos = ((card->curRecPos + amt) % ringsize); | |
500 | } | |
501 | card->recBuf = NULL; | |
502 | card->requestedRecAmt = 0; | |
503 | DMAbuf_inputintr (card->dev_for_record); | |
504 | } | |
505 | } | |
506 | ||
507 | /* | |
508 | * Initialize the hardware. | |
509 | */ | |
510 | static void | |
511 | nm256_initHw (struct nm256_info *card) | |
512 | { | |
513 | /* Reset everything. */ | |
514 | nm256_writePort8 (card, 2, 0x0, 0x11); | |
515 | nm256_writePort16 (card, 2, 0x214, 0); | |
516 | ||
517 | stopRecord (card); | |
518 | stopPlay (card); | |
519 | } | |
520 | ||
521 | /* | |
522 | * Handle a potential interrupt for the device referred to by DEV_ID. | |
523 | * | |
524 | * I don't like the cut-n-paste job here either between the two routines, | |
525 | * but there are sufficient differences between the two interrupt handlers | |
526 | * that parameterizing it isn't all that great either. (Could use a macro, | |
527 | * I suppose...yucky bleah.) | |
528 | */ | |
529 | ||
530 | static irqreturn_t | |
531 | nm256_interrupt (int irq, void *dev_id, struct pt_regs *dummy) | |
532 | { | |
533 | struct nm256_info *card = (struct nm256_info *)dev_id; | |
534 | u16 status; | |
535 | static int badintrcount; | |
536 | int handled = 0; | |
537 | ||
538 | if ((card == NULL) || (card->magsig != NM_MAGIC_SIG)) { | |
539 | printk (KERN_ERR "NM256: Bad card pointer\n"); | |
540 | return IRQ_NONE; | |
541 | } | |
542 | ||
543 | status = nm256_readPort16 (card, 2, NM_INT_REG); | |
544 | ||
545 | /* Not ours. */ | |
546 | if (status == 0) { | |
547 | if (badintrcount++ > 1000) { | |
548 | /* | |
549 | * I'm not sure if the best thing is to stop the card from | |
550 | * playing or just release the interrupt (after all, we're in | |
551 | * a bad situation, so doing fancy stuff may not be such a good | |
552 | * idea). | |
553 | * | |
554 | * I worry about the card engine continuing to play noise | |
555 | * over and over, however--that could become a very | |
556 | * obnoxious problem. And we know that when this usually | |
557 | * happens things are fairly safe, it just means the user's | |
558 | * inserted a PCMCIA card and someone's spamming us with IRQ 9s. | |
559 | */ | |
560 | ||
561 | handled = 1; | |
562 | if (card->playing) | |
563 | stopPlay (card); | |
564 | if (card->recording) | |
565 | stopRecord (card); | |
566 | badintrcount = 0; | |
567 | } | |
568 | return IRQ_RETVAL(handled); | |
569 | } | |
570 | ||
571 | badintrcount = 0; | |
572 | ||
573 | /* Rather boring; check for individual interrupts and process them. */ | |
574 | ||
575 | if (status & NM_PLAYBACK_INT) { | |
576 | handled = 1; | |
577 | status &= ~NM_PLAYBACK_INT; | |
578 | NM_ACK_INT (card, NM_PLAYBACK_INT); | |
579 | ||
580 | if (card->playing) | |
581 | nm256_get_new_block (card); | |
582 | } | |
583 | ||
584 | if (status & NM_RECORD_INT) { | |
585 | handled = 1; | |
586 | status &= ~NM_RECORD_INT; | |
587 | NM_ACK_INT (card, NM_RECORD_INT); | |
588 | ||
589 | if (card->recording) | |
590 | nm256_read_block (card); | |
591 | } | |
592 | ||
593 | if (status & NM_MISC_INT_1) { | |
594 | u8 cbyte; | |
595 | ||
596 | handled = 1; | |
597 | status &= ~NM_MISC_INT_1; | |
598 | printk (KERN_ERR "NM256: Got misc interrupt #1\n"); | |
599 | NM_ACK_INT (card, NM_MISC_INT_1); | |
600 | nm256_writePort16 (card, 2, NM_INT_REG, 0x8000); | |
601 | cbyte = nm256_readPort8 (card, 2, 0x400); | |
602 | nm256_writePort8 (card, 2, 0x400, cbyte | 2); | |
603 | } | |
604 | ||
605 | if (status & NM_MISC_INT_2) { | |
606 | u8 cbyte; | |
607 | ||
608 | handled = 1; | |
609 | status &= ~NM_MISC_INT_2; | |
610 | printk (KERN_ERR "NM256: Got misc interrupt #2\n"); | |
611 | NM_ACK_INT (card, NM_MISC_INT_2); | |
612 | cbyte = nm256_readPort8 (card, 2, 0x400); | |
613 | nm256_writePort8 (card, 2, 0x400, cbyte & ~2); | |
614 | } | |
615 | ||
616 | /* Unknown interrupt. */ | |
617 | if (status) { | |
618 | handled = 1; | |
619 | printk (KERN_ERR "NM256: Fire in the hole! Unknown status 0x%x\n", | |
620 | status); | |
621 | /* Pray. */ | |
622 | NM_ACK_INT (card, status); | |
623 | } | |
624 | return IRQ_RETVAL(handled); | |
625 | } | |
626 | ||
627 | /* | |
628 | * Handle a potential interrupt for the device referred to by DEV_ID. | |
629 | * This handler is for the 256ZX, and is very similar to the non-ZX | |
630 | * routine. | |
631 | */ | |
632 | ||
633 | static irqreturn_t | |
634 | nm256_interrupt_zx (int irq, void *dev_id, struct pt_regs *dummy) | |
635 | { | |
636 | struct nm256_info *card = (struct nm256_info *)dev_id; | |
637 | u32 status; | |
638 | static int badintrcount; | |
639 | int handled = 0; | |
640 | ||
641 | if ((card == NULL) || (card->magsig != NM_MAGIC_SIG)) { | |
642 | printk (KERN_ERR "NM256: Bad card pointer\n"); | |
643 | return IRQ_NONE; | |
644 | } | |
645 | ||
646 | status = nm256_readPort32 (card, 2, NM_INT_REG); | |
647 | ||
648 | /* Not ours. */ | |
649 | if (status == 0) { | |
650 | if (badintrcount++ > 1000) { | |
651 | printk (KERN_ERR "NM256: Releasing interrupt, over 1000 invalid interrupts\n"); | |
652 | /* | |
653 | * I'm not sure if the best thing is to stop the card from | |
654 | * playing or just release the interrupt (after all, we're in | |
655 | * a bad situation, so doing fancy stuff may not be such a good | |
656 | * idea). | |
657 | * | |
658 | * I worry about the card engine continuing to play noise | |
659 | * over and over, however--that could become a very | |
660 | * obnoxious problem. And we know that when this usually | |
661 | * happens things are fairly safe, it just means the user's | |
662 | * inserted a PCMCIA card and someone's spamming us with | |
663 | * IRQ 9s. | |
664 | */ | |
665 | ||
666 | handled = 1; | |
667 | if (card->playing) | |
668 | stopPlay (card); | |
669 | if (card->recording) | |
670 | stopRecord (card); | |
671 | badintrcount = 0; | |
672 | } | |
673 | return IRQ_RETVAL(handled); | |
674 | } | |
675 | ||
676 | badintrcount = 0; | |
677 | ||
678 | /* Rather boring; check for individual interrupts and process them. */ | |
679 | ||
680 | if (status & NM2_PLAYBACK_INT) { | |
681 | handled = 1; | |
682 | status &= ~NM2_PLAYBACK_INT; | |
683 | NM2_ACK_INT (card, NM2_PLAYBACK_INT); | |
684 | ||
685 | if (card->playing) | |
686 | nm256_get_new_block (card); | |
687 | } | |
688 | ||
689 | if (status & NM2_RECORD_INT) { | |
690 | handled = 1; | |
691 | status &= ~NM2_RECORD_INT; | |
692 | NM2_ACK_INT (card, NM2_RECORD_INT); | |
693 | ||
694 | if (card->recording) | |
695 | nm256_read_block (card); | |
696 | } | |
697 | ||
698 | if (status & NM2_MISC_INT_1) { | |
699 | u8 cbyte; | |
700 | ||
701 | handled = 1; | |
702 | status &= ~NM2_MISC_INT_1; | |
703 | printk (KERN_ERR "NM256: Got misc interrupt #1\n"); | |
704 | NM2_ACK_INT (card, NM2_MISC_INT_1); | |
705 | cbyte = nm256_readPort8 (card, 2, 0x400); | |
706 | nm256_writePort8 (card, 2, 0x400, cbyte | 2); | |
707 | } | |
708 | ||
709 | if (status & NM2_MISC_INT_2) { | |
710 | u8 cbyte; | |
711 | ||
712 | handled = 1; | |
713 | status &= ~NM2_MISC_INT_2; | |
714 | printk (KERN_ERR "NM256: Got misc interrupt #2\n"); | |
715 | NM2_ACK_INT (card, NM2_MISC_INT_2); | |
716 | cbyte = nm256_readPort8 (card, 2, 0x400); | |
717 | nm256_writePort8 (card, 2, 0x400, cbyte & ~2); | |
718 | } | |
719 | ||
720 | /* Unknown interrupt. */ | |
721 | if (status) { | |
722 | handled = 1; | |
723 | printk (KERN_ERR "NM256: Fire in the hole! Unknown status 0x%x\n", | |
724 | status); | |
725 | /* Pray. */ | |
726 | NM2_ACK_INT (card, status); | |
727 | } | |
728 | return IRQ_RETVAL(handled); | |
729 | } | |
730 | ||
731 | /* | |
732 | * Request our interrupt. | |
733 | */ | |
734 | static int | |
735 | nm256_grabInterrupt (struct nm256_info *card) | |
736 | { | |
737 | if (card->has_irq++ == 0) { | |
738 | if (request_irq (card->irq, card->introutine, SA_SHIRQ, | |
739 | "NM256_audio", card) < 0) { | |
740 | printk (KERN_ERR "NM256: can't obtain IRQ %d\n", card->irq); | |
741 | return -1; | |
742 | } | |
743 | } | |
744 | return 0; | |
745 | } | |
746 | ||
747 | /* | |
748 | * Release our interrupt. | |
749 | */ | |
750 | static int | |
751 | nm256_releaseInterrupt (struct nm256_info *card) | |
752 | { | |
753 | if (card->has_irq <= 0) { | |
754 | printk (KERN_ERR "nm256: too many calls to releaseInterrupt\n"); | |
755 | return -1; | |
756 | } | |
757 | card->has_irq--; | |
758 | if (card->has_irq == 0) { | |
759 | free_irq (card->irq, card); | |
760 | } | |
761 | return 0; | |
762 | } | |
763 | ||
764 | /* | |
765 | * Waits for the mixer to become ready to be written; returns a zero value | |
766 | * if it timed out. | |
767 | */ | |
768 | ||
769 | static int | |
770 | nm256_isReady (struct ac97_hwint *dev) | |
771 | { | |
772 | struct nm256_info *card = (struct nm256_info *)dev->driver_private; | |
773 | int t2 = 10; | |
774 | u32 testaddr; | |
775 | u16 testb; | |
776 | int done = 0; | |
777 | ||
778 | if (card->magsig != NM_MAGIC_SIG) { | |
779 | printk (KERN_ERR "NM256: Bad magic signature in isReady!\n"); | |
780 | return 0; | |
781 | } | |
782 | ||
783 | testaddr = card->mixer_status_offset; | |
784 | testb = card->mixer_status_mask; | |
785 | ||
786 | /* | |
787 | * Loop around waiting for the mixer to become ready. | |
788 | */ | |
789 | while (! done && t2-- > 0) { | |
790 | if ((nm256_readPort16 (card, 2, testaddr) & testb) == 0) | |
791 | done = 1; | |
792 | else | |
793 | udelay (100); | |
794 | } | |
795 | return done; | |
796 | } | |
797 | ||
798 | /* | |
799 | * Return the contents of the AC97 mixer register REG. Returns a positive | |
800 | * value if successful, or a negative error code. | |
801 | */ | |
802 | static int | |
803 | nm256_readAC97Reg (struct ac97_hwint *dev, u8 reg) | |
804 | { | |
805 | struct nm256_info *card = (struct nm256_info *)dev->driver_private; | |
806 | ||
807 | if (card->magsig != NM_MAGIC_SIG) { | |
808 | printk (KERN_ERR "NM256: Bad magic signature in readAC97Reg!\n"); | |
809 | return -EINVAL; | |
810 | } | |
811 | ||
812 | if (reg < 128) { | |
813 | int res; | |
814 | ||
815 | nm256_isReady (dev); | |
816 | res = nm256_readPort16 (card, 2, card->mixer + reg); | |
817 | /* Magic delay. Bleah yucky. */ | |
818 | udelay (1000); | |
819 | return res; | |
820 | } | |
821 | else | |
822 | return -EINVAL; | |
823 | } | |
824 | ||
825 | /* | |
826 | * Writes VALUE to AC97 mixer register REG. Returns 0 if successful, or | |
827 | * a negative error code. | |
828 | */ | |
829 | static int | |
830 | nm256_writeAC97Reg (struct ac97_hwint *dev, u8 reg, u16 value) | |
831 | { | |
832 | unsigned long flags; | |
833 | int tries = 2; | |
834 | int done = 0; | |
835 | u32 base; | |
836 | ||
837 | struct nm256_info *card = (struct nm256_info *)dev->driver_private; | |
838 | ||
839 | if (card->magsig != NM_MAGIC_SIG) { | |
840 | printk (KERN_ERR "NM256: Bad magic signature in writeAC97Reg!\n"); | |
841 | return -EINVAL; | |
842 | } | |
843 | ||
844 | base = card->mixer; | |
845 | ||
846 | spin_lock_irqsave(&card->lock,flags); | |
847 | ||
848 | nm256_isReady (dev); | |
849 | ||
850 | /* Wait for the write to take, too. */ | |
851 | while ((tries-- > 0) && !done) { | |
852 | nm256_writePort16 (card, 2, base + reg, value); | |
853 | if (nm256_isReady (dev)) { | |
854 | done = 1; | |
855 | break; | |
856 | } | |
857 | ||
858 | } | |
859 | ||
860 | spin_unlock_irqrestore(&card->lock,flags); | |
861 | udelay (1000); | |
862 | ||
863 | return ! done; | |
864 | } | |
865 | ||
866 | /* | |
867 | * Initial register values to be written to the AC97 mixer. | |
868 | * While most of these are identical to the reset values, we do this | |
869 | * so that we have most of the register contents cached--this avoids | |
870 | * reading from the mixer directly (which seems to be problematic, | |
871 | * probably due to ignorance). | |
872 | */ | |
873 | struct initialValues | |
874 | { | |
875 | unsigned short port; | |
876 | unsigned short value; | |
877 | }; | |
878 | ||
879 | static struct initialValues nm256_ac97_initial_values[] = | |
880 | { | |
881 | { AC97_MASTER_VOL_STEREO, 0x8000 }, | |
882 | { AC97_HEADPHONE_VOL, 0x8000 }, | |
883 | { AC97_MASTER_VOL_MONO, 0x0000 }, | |
884 | { AC97_PCBEEP_VOL, 0x0000 }, | |
885 | { AC97_PHONE_VOL, 0x0008 }, | |
886 | { AC97_MIC_VOL, 0x8000 }, | |
887 | { AC97_LINEIN_VOL, 0x8808 }, | |
888 | { AC97_CD_VOL, 0x8808 }, | |
889 | { AC97_VIDEO_VOL, 0x8808 }, | |
890 | { AC97_AUX_VOL, 0x8808 }, | |
891 | { AC97_PCMOUT_VOL, 0x0808 }, | |
892 | { AC97_RECORD_SELECT, 0x0000 }, | |
893 | { AC97_RECORD_GAIN, 0x0B0B }, | |
894 | { AC97_GENERAL_PURPOSE, 0x0000 }, | |
895 | { 0xffff, 0xffff } | |
896 | }; | |
897 | ||
898 | /* Initialize the AC97 into a known state. */ | |
899 | static int | |
900 | nm256_resetAC97 (struct ac97_hwint *dev) | |
901 | { | |
902 | struct nm256_info *card = (struct nm256_info *)dev->driver_private; | |
903 | int x; | |
904 | ||
905 | if (card->magsig != NM_MAGIC_SIG) { | |
906 | printk (KERN_ERR "NM256: Bad magic signature in resetAC97!\n"); | |
907 | return -EINVAL; | |
908 | } | |
909 | ||
910 | /* Reset the mixer. 'Tis magic! */ | |
911 | nm256_writePort8 (card, 2, 0x6c0, 1); | |
912 | // nm256_writePort8 (card, 2, 0x6cc, 0x87); /* This crashes Dell latitudes */ | |
913 | nm256_writePort8 (card, 2, 0x6cc, 0x80); | |
914 | nm256_writePort8 (card, 2, 0x6cc, 0x0); | |
915 | ||
916 | if (! card->mixer_values_init) { | |
917 | for (x = 0; nm256_ac97_initial_values[x].port != 0xffff; x++) { | |
918 | ac97_put_register (dev, | |
919 | nm256_ac97_initial_values[x].port, | |
920 | nm256_ac97_initial_values[x].value); | |
921 | card->mixer_values_init = 1; | |
922 | } | |
923 | } | |
924 | ||
925 | return 0; | |
926 | } | |
927 | ||
928 | /* | |
929 | * We don't do anything particularly special here; it just passes the | |
930 | * mixer ioctl to the AC97 driver. | |
931 | */ | |
932 | static int | |
933 | nm256_default_mixer_ioctl (int dev, unsigned int cmd, void __user *arg) | |
934 | { | |
935 | struct nm256_info *card = nm256_find_card_for_mixer (dev); | |
936 | if (card != NULL) | |
937 | return ac97_mixer_ioctl (&(card->mdev), cmd, arg); | |
938 | else | |
939 | return -ENODEV; | |
940 | } | |
941 | ||
942 | static struct mixer_operations nm256_mixer_operations = { | |
943 | .owner = THIS_MODULE, | |
944 | .id = "NeoMagic", | |
945 | .name = "NM256AC97Mixer", | |
946 | .ioctl = nm256_default_mixer_ioctl | |
947 | }; | |
948 | ||
949 | /* | |
950 | * Default settings for the OSS mixer. These are set last, after the | |
951 | * mixer is initialized. | |
952 | * | |
953 | * I "love" C sometimes. Got braces? | |
954 | */ | |
955 | static struct ac97_mixer_value_list mixer_defaults[] = { | |
956 | { SOUND_MIXER_VOLUME, { { 85, 85 } } }, | |
957 | { SOUND_MIXER_SPEAKER, { { 100 } } }, | |
958 | { SOUND_MIXER_PCM, { { 65, 65 } } }, | |
959 | { SOUND_MIXER_CD, { { 65, 65 } } }, | |
960 | { -1, { { 0, 0 } } } | |
961 | }; | |
962 | ||
963 | ||
964 | /* Installs the AC97 mixer into CARD. */ | |
965 | static int __init | |
966 | nm256_install_mixer (struct nm256_info *card) | |
967 | { | |
968 | int mixer; | |
969 | ||
970 | card->mdev.reset_device = nm256_resetAC97; | |
971 | card->mdev.read_reg = nm256_readAC97Reg; | |
972 | card->mdev.write_reg = nm256_writeAC97Reg; | |
973 | card->mdev.driver_private = (void *)card; | |
974 | ||
975 | if (ac97_init (&(card->mdev))) | |
976 | return -1; | |
977 | ||
978 | mixer = sound_alloc_mixerdev(); | |
979 | if (num_mixers >= MAX_MIXER_DEV) { | |
980 | printk ("NM256 mixer: Unable to alloc mixerdev\n"); | |
981 | return -1; | |
982 | } | |
983 | ||
984 | mixer_devs[mixer] = &nm256_mixer_operations; | |
985 | card->mixer_oss_dev = mixer; | |
986 | ||
987 | /* Some reasonable default values. */ | |
988 | ac97_set_values (&(card->mdev), mixer_defaults); | |
989 | ||
990 | printk(KERN_INFO "Initialized AC97 mixer\n"); | |
991 | return 0; | |
992 | } | |
993 | ||
994 | /* Perform a full reset on the hardware; this is invoked when an APM | |
995 | resume event occurs. */ | |
996 | static void | |
997 | nm256_full_reset (struct nm256_info *card) | |
998 | { | |
999 | nm256_initHw (card); | |
1000 | ac97_reset (&(card->mdev)); | |
1001 | } | |
1002 | ||
1003 | /* | |
1004 | * See if the signature left by the NM256 BIOS is intact; if so, we use | |
1005 | * the associated address as the end of our audio buffer in the video | |
1006 | * RAM. | |
1007 | */ | |
1008 | ||
1009 | static void __init | |
1010 | nm256_peek_for_sig (struct nm256_info *card) | |
1011 | { | |
1012 | u32 port1offset | |
1013 | = card->port[0].physaddr + card->port[0].end_offset - 0x0400; | |
1014 | /* The signature is located 1K below the end of video RAM. */ | |
1015 | char __iomem *temp = ioremap_nocache (port1offset, 16); | |
1016 | /* Default buffer end is 5120 bytes below the top of RAM. */ | |
1017 | u32 default_value = card->port[0].end_offset - 0x1400; | |
1018 | u32 sig; | |
1019 | ||
1020 | /* Install the default value first, so we don't have to repeatedly | |
1021 | do it if there is a problem. */ | |
1022 | card->port[0].end_offset = default_value; | |
1023 | ||
1024 | if (temp == NULL) { | |
1025 | printk (KERN_ERR "NM256: Unable to scan for card signature in video RAM\n"); | |
1026 | return; | |
1027 | } | |
1028 | sig = readl (temp); | |
1029 | if ((sig & NM_SIG_MASK) == NM_SIGNATURE) { | |
1030 | u32 pointer = readl (temp + 4); | |
1031 | ||
1032 | /* | |
1033 | * If it's obviously invalid, don't use it (the port already has a | |
1034 | * suitable default value set). | |
1035 | */ | |
1036 | if (pointer != 0xffffffff) | |
1037 | card->port[0].end_offset = pointer; | |
1038 | ||
1039 | printk (KERN_INFO "NM256: Found card signature in video RAM: 0x%x\n", | |
1040 | pointer); | |
1041 | } | |
1042 | ||
1043 | iounmap (temp); | |
1044 | } | |
1045 | ||
1046 | /* | |
1047 | * Install a driver for the PCI device referenced by PCIDEV. | |
1048 | * VERSTR is a human-readable version string. | |
1049 | */ | |
1050 | ||
1051 | static int __devinit | |
1052 | nm256_install(struct pci_dev *pcidev, enum nm256rev rev, char *verstr) | |
1053 | { | |
1054 | struct nm256_info *card; | |
1055 | struct pm_dev *pmdev; | |
1056 | int x; | |
1057 | ||
1058 | if (pci_enable_device(pcidev)) | |
1059 | return 0; | |
1060 | ||
1061 | card = kmalloc (sizeof (struct nm256_info), GFP_KERNEL); | |
1062 | if (card == NULL) { | |
1063 | printk (KERN_ERR "NM256: out of memory!\n"); | |
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | card->magsig = NM_MAGIC_SIG; | |
1068 | card->playing = 0; | |
1069 | card->recording = 0; | |
1070 | card->rev = rev; | |
1071 | spin_lock_init(&card->lock); | |
1072 | ||
1073 | /* Init the memory port info. */ | |
1074 | for (x = 0; x < 2; x++) { | |
1075 | card->port[x].physaddr = pci_resource_start (pcidev, x); | |
1076 | card->port[x].ptr = NULL; | |
1077 | card->port[x].start_offset = 0; | |
1078 | card->port[x].end_offset = 0; | |
1079 | } | |
1080 | ||
1081 | /* Port 2 is easy. */ | |
1082 | card->port[1].start_offset = 0; | |
1083 | card->port[1].end_offset = NM_PORT2_SIZE; | |
1084 | ||
1085 | /* Yuck. But we have to map in port 2 so we can check how much RAM the | |
1086 | card has. */ | |
1087 | if (nm256_remap_ports (card)) { | |
1088 | kfree (card); | |
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | /* | |
1093 | * The NM256 has two memory ports. The first port is nothing | |
1094 | * more than a chunk of video RAM, which is used as the I/O ring | |
1095 | * buffer. The second port has the actual juicy stuff (like the | |
1096 | * mixer and the playback engine control registers). | |
1097 | */ | |
1098 | ||
1099 | if (card->rev == REV_NM256AV) { | |
1100 | /* Ok, try to see if this is a non-AC97 version of the hardware. */ | |
1101 | int pval = nm256_readPort16 (card, 2, NM_MIXER_PRESENCE); | |
1102 | if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) { | |
1103 | if (! force_load) { | |
1104 | printk (KERN_ERR "NM256: This doesn't look to me like the AC97-compatible version.\n"); | |
1105 | printk (KERN_ERR " You can force the driver to load by passing in the module\n"); | |
1106 | printk (KERN_ERR " parameter:\n"); | |
1107 | printk (KERN_ERR " force_load = 1\n"); | |
1108 | printk (KERN_ERR "\n"); | |
1109 | printk (KERN_ERR " More likely, you should be using the appropriate SB-16 or\n"); | |
1110 | printk (KERN_ERR " CS4232 driver instead. (If your BIOS has settings for\n"); | |
1111 | printk (KERN_ERR " IRQ and/or DMA for the sound card, this is *not* the correct\n"); | |
1112 | printk (KERN_ERR " driver to use.)\n"); | |
1113 | nm256_release_ports (card); | |
1114 | kfree (card); | |
1115 | return 0; | |
1116 | } | |
1117 | else { | |
1118 | printk (KERN_INFO "NM256: Forcing driver load as per user request.\n"); | |
1119 | } | |
1120 | } | |
1121 | else { | |
1122 | /* printk (KERN_INFO "NM256: Congratulations. You're not running Eunice.\n")*/; | |
1123 | } | |
1124 | card->port[0].end_offset = 2560 * 1024; | |
1125 | card->introutine = nm256_interrupt; | |
1126 | card->mixer_status_offset = NM_MIXER_STATUS_OFFSET; | |
1127 | card->mixer_status_mask = NM_MIXER_READY_MASK; | |
1128 | } | |
1129 | else { | |
1130 | /* Not sure if there is any relevant detect for the ZX or not. */ | |
1131 | if (nm256_readPort8 (card, 2, 0xa0b) != 0) | |
1132 | card->port[0].end_offset = 6144 * 1024; | |
1133 | else | |
1134 | card->port[0].end_offset = 4096 * 1024; | |
1135 | ||
1136 | card->introutine = nm256_interrupt_zx; | |
1137 | card->mixer_status_offset = NM2_MIXER_STATUS_OFFSET; | |
1138 | card->mixer_status_mask = NM2_MIXER_READY_MASK; | |
1139 | } | |
1140 | ||
1141 | if (buffertop >= 98304 && buffertop < card->port[0].end_offset) | |
1142 | card->port[0].end_offset = buffertop; | |
1143 | else | |
1144 | nm256_peek_for_sig (card); | |
1145 | ||
1146 | card->port[0].start_offset = card->port[0].end_offset - 98304; | |
1147 | ||
1148 | printk (KERN_INFO "NM256: Mapping port 1 from 0x%x - 0x%x\n", | |
1149 | card->port[0].start_offset, card->port[0].end_offset); | |
1150 | ||
1151 | if (nm256_remap_ports (card)) { | |
1152 | kfree (card); | |
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | /* See if we can get the interrupt. */ | |
1157 | ||
1158 | card->irq = pcidev->irq; | |
1159 | card->has_irq = 0; | |
1160 | ||
1161 | if (nm256_grabInterrupt (card) != 0) { | |
1162 | nm256_release_ports (card); | |
1163 | kfree (card); | |
1164 | return 0; | |
1165 | } | |
1166 | ||
1167 | nm256_releaseInterrupt (card); | |
1168 | ||
1169 | /* | |
1170 | * Init the board. | |
1171 | */ | |
1172 | ||
1173 | card->playbackBufferSize = 16384; | |
1174 | card->recordBufferSize = 16384; | |
1175 | ||
1176 | card->coeffBuf = card->port[0].end_offset - NM_MAX_COEFFICIENT; | |
1177 | card->abuf2 = card->coeffBuf - card->recordBufferSize; | |
1178 | card->abuf1 = card->abuf2 - card->playbackBufferSize; | |
1179 | card->allCoeffBuf = card->abuf2 - (NM_TOTAL_COEFF_COUNT * 4); | |
1180 | ||
1181 | /* Fixed setting. */ | |
1182 | card->mixer = NM_MIXER_OFFSET; | |
1183 | card->mixer_values_init = 0; | |
1184 | ||
1185 | card->is_open_play = 0; | |
1186 | card->is_open_record = 0; | |
1187 | ||
1188 | card->coeffsCurrent = 0; | |
1189 | ||
1190 | card->opencnt[0] = 0; card->opencnt[1] = 0; | |
1191 | ||
1192 | /* Reasonable default settings, but largely unnecessary. */ | |
1193 | for (x = 0; x < 2; x++) { | |
1194 | card->sinfo[x].bits = 8; | |
1195 | card->sinfo[x].stereo = 0; | |
1196 | card->sinfo[x].samplerate = 8000; | |
1197 | } | |
1198 | ||
1199 | nm256_initHw (card); | |
1200 | ||
1201 | for (x = 0; x < 2; x++) { | |
1202 | if ((card->dev[x] = | |
1203 | sound_install_audiodrv(AUDIO_DRIVER_VERSION, | |
1204 | "NM256", &nm256_audio_driver, | |
1205 | sizeof(struct audio_driver), | |
1206 | DMA_NODMA, AFMT_U8 | AFMT_S16_LE, | |
1207 | NULL, -1, -1)) >= 0) { | |
1208 | /* 1K minimum buffer size. */ | |
1209 | audio_devs[card->dev[x]]->min_fragment = 10; | |
1210 | /* Maximum of 8K buffer size. */ | |
1211 | audio_devs[card->dev[x]]->max_fragment = 13; | |
1212 | } | |
1213 | else { | |
1214 | printk(KERN_ERR "NM256: Too many PCM devices available\n"); | |
1215 | nm256_release_ports (card); | |
1216 | kfree (card); | |
1217 | return 0; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | pci_set_drvdata(pcidev,card); | |
1222 | ||
1223 | /* Insert the card in the list. */ | |
1224 | card->next_card = nmcard_list; | |
1225 | nmcard_list = card; | |
1226 | ||
1227 | printk(KERN_INFO "Initialized NeoMagic %s audio in PCI native mode\n", | |
1228 | verstr); | |
1229 | ||
1230 | /* | |
1231 | * And our mixer. (We should allow support for other mixers, maybe.) | |
1232 | */ | |
1233 | ||
1234 | nm256_install_mixer (card); | |
1235 | ||
1236 | pmdev = pm_register(PM_PCI_DEV, PM_PCI_ID(pcidev), handle_pm_event); | |
1237 | if (pmdev) | |
1238 | pmdev->data = card; | |
1239 | ||
1240 | return 1; | |
1241 | } | |
1242 | ||
1243 | ||
1244 | /* | |
1245 | * PM event handler, so the card is properly reinitialized after a power | |
1246 | * event. | |
1247 | */ | |
1248 | static int | |
1249 | handle_pm_event (struct pm_dev *dev, pm_request_t rqst, void *data) | |
1250 | { | |
1251 | struct nm256_info *crd = (struct nm256_info*) dev->data; | |
1252 | if (crd) { | |
1253 | switch (rqst) { | |
1254 | case PM_SUSPEND: | |
1255 | break; | |
1256 | case PM_RESUME: | |
1257 | { | |
1258 | int playing = crd->playing; | |
1259 | nm256_full_reset (crd); | |
1260 | /* | |
1261 | * A little ugly, but that's ok; pretend the | |
1262 | * block we were playing is done. | |
1263 | */ | |
1264 | if (playing) | |
1265 | DMAbuf_outputintr (crd->dev_for_play, 1); | |
1266 | } | |
1267 | break; | |
1268 | } | |
1269 | } | |
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | static int __devinit | |
1274 | nm256_probe(struct pci_dev *pcidev,const struct pci_device_id *pciid) | |
1275 | { | |
1276 | if (pcidev->device == PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO) | |
1277 | return nm256_install(pcidev, REV_NM256AV, "256AV"); | |
1278 | if (pcidev->device == PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO) | |
1279 | return nm256_install(pcidev, REV_NM256ZX, "256ZX"); | |
1280 | if (pcidev->device == PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO) | |
1281 | return nm256_install(pcidev, REV_NM256ZX, "256XL+"); | |
1282 | return -1; /* should not come here ... */ | |
1283 | } | |
1284 | ||
1285 | static void __devinit | |
1286 | nm256_remove(struct pci_dev *pcidev) { | |
1287 | struct nm256_info *xcard = pci_get_drvdata(pcidev); | |
1288 | struct nm256_info *card,*next_card = NULL; | |
1289 | ||
1290 | for (card = nmcard_list; card != NULL; card = next_card) { | |
1291 | next_card = card->next_card; | |
1292 | if (card == xcard) { | |
1293 | stopPlay (card); | |
1294 | stopRecord (card); | |
1295 | if (card->has_irq) | |
1296 | free_irq (card->irq, card); | |
1297 | nm256_release_ports (card); | |
1298 | sound_unload_mixerdev (card->mixer_oss_dev); | |
1299 | sound_unload_audiodev (card->dev[0]); | |
1300 | sound_unload_audiodev (card->dev[1]); | |
1301 | kfree (card); | |
1302 | break; | |
1303 | } | |
1304 | } | |
1305 | if (nmcard_list == card) | |
1306 | nmcard_list = next_card; | |
1307 | } | |
1308 | ||
1309 | /* | |
1310 | * Open the device | |
1311 | * | |
1312 | * DEV - device | |
1313 | * MODE - mode to open device (logical OR of OPEN_READ and OPEN_WRITE) | |
1314 | * | |
1315 | * Called when opening the DMAbuf (dmabuf.c:259) | |
1316 | */ | |
1317 | static int | |
1318 | nm256_audio_open(int dev, int mode) | |
1319 | { | |
1320 | struct nm256_info *card = nm256_find_card (dev); | |
1321 | int w; | |
1322 | ||
1323 | if (card == NULL) | |
1324 | return -ENODEV; | |
1325 | ||
1326 | if (card->dev[0] == dev) | |
1327 | w = 0; | |
1328 | else if (card->dev[1] == dev) | |
1329 | w = 1; | |
1330 | else | |
1331 | return -ENODEV; | |
1332 | ||
1333 | if (card->opencnt[w] > 0) | |
1334 | return -EBUSY; | |
1335 | ||
1336 | /* No bits set? Huh? */ | |
1337 | if (! ((mode & OPEN_READ) || (mode & OPEN_WRITE))) | |
1338 | return -EIO; | |
1339 | ||
1340 | /* | |
1341 | * If it's open for both read and write, and the card's currently | |
1342 | * being read or written to, then do the opposite of what has | |
1343 | * already been done. Otherwise, don't specify any mode until the | |
1344 | * user actually tries to do I/O. (Some programs open the device | |
1345 | * for both read and write, but only actually do reading or writing.) | |
1346 | */ | |
1347 | ||
1348 | if ((mode & OPEN_WRITE) && (mode & OPEN_READ)) { | |
1349 | if (card->is_open_play) | |
1350 | mode = OPEN_WRITE; | |
1351 | else if (card->is_open_record) | |
1352 | mode = OPEN_READ; | |
1353 | else mode = 0; | |
1354 | } | |
1355 | ||
1356 | if (mode & OPEN_WRITE) { | |
1357 | if (card->is_open_play == 0) { | |
1358 | card->dev_for_play = dev; | |
1359 | card->is_open_play = 1; | |
1360 | } | |
1361 | else | |
1362 | return -EBUSY; | |
1363 | } | |
1364 | ||
1365 | if (mode & OPEN_READ) { | |
1366 | if (card->is_open_record == 0) { | |
1367 | card->dev_for_record = dev; | |
1368 | card->is_open_record = 1; | |
1369 | } | |
1370 | else | |
1371 | return -EBUSY; | |
1372 | } | |
1373 | ||
1374 | card->opencnt[w]++; | |
1375 | return 0; | |
1376 | } | |
1377 | ||
1378 | /* | |
1379 | * Close the device | |
1380 | * | |
1381 | * DEV - device | |
1382 | * | |
1383 | * Called when closing the DMAbuf (dmabuf.c:477) | |
1384 | * after halt_xfer | |
1385 | */ | |
1386 | static void | |
1387 | nm256_audio_close(int dev) | |
1388 | { | |
1389 | struct nm256_info *card = nm256_find_card (dev); | |
1390 | ||
1391 | if (card != NULL) { | |
1392 | int w; | |
1393 | ||
1394 | if (card->dev[0] == dev) | |
1395 | w = 0; | |
1396 | else if (card->dev[1] == dev) | |
1397 | w = 1; | |
1398 | else | |
1399 | return; | |
1400 | ||
1401 | card->opencnt[w]--; | |
1402 | if (card->opencnt[w] <= 0) { | |
1403 | card->opencnt[w] = 0; | |
1404 | ||
1405 | if (card->dev_for_play == dev) { | |
1406 | stopPlay (card); | |
1407 | card->is_open_play = 0; | |
1408 | card->dev_for_play = -1; | |
1409 | } | |
1410 | ||
1411 | if (card->dev_for_record == dev) { | |
1412 | stopRecord (card); | |
1413 | card->is_open_record = 0; | |
1414 | card->dev_for_record = -1; | |
1415 | } | |
1416 | } | |
1417 | } | |
1418 | } | |
1419 | ||
1420 | /* Standard ioctl handler. */ | |
1421 | static int | |
1422 | nm256_audio_ioctl(int dev, unsigned int cmd, void __user *arg) | |
1423 | { | |
1424 | int ret; | |
1425 | u32 oldinfo; | |
1426 | int w; | |
1427 | ||
1428 | struct nm256_info *card = nm256_find_card (dev); | |
1429 | ||
1430 | if (card == NULL) | |
1431 | return -ENODEV; | |
1432 | ||
1433 | if (dev == card->dev[0]) | |
1434 | w = 0; | |
1435 | else | |
1436 | w = 1; | |
1437 | ||
1438 | /* | |
1439 | * The code here is messy. There are probably better ways to do | |
1440 | * it. (It should be possible to handle it the same way the AC97 mixer | |
1441 | * is done.) | |
1442 | */ | |
1443 | switch (cmd) | |
1444 | { | |
1445 | case SOUND_PCM_WRITE_RATE: | |
1446 | if (get_user(ret, (int __user *) arg)) | |
1447 | return -EFAULT; | |
1448 | ||
1449 | if (ret != 0) { | |
1450 | oldinfo = card->sinfo[w].samplerate; | |
1451 | card->sinfo[w].samplerate = ret; | |
1452 | ret = nm256_setInfo(dev, card); | |
1453 | if (ret != 0) | |
1454 | card->sinfo[w].samplerate = oldinfo; | |
1455 | } | |
1456 | if (ret == 0) | |
1457 | ret = card->sinfo[w].samplerate; | |
1458 | break; | |
1459 | ||
1460 | case SOUND_PCM_READ_RATE: | |
1461 | ret = card->sinfo[w].samplerate; | |
1462 | break; | |
1463 | ||
1464 | case SNDCTL_DSP_STEREO: | |
1465 | if (get_user(ret, (int __user *) arg)) | |
1466 | return -EFAULT; | |
1467 | ||
1468 | card->sinfo[w].stereo = ret ? 1 : 0; | |
1469 | ret = nm256_setInfo (dev, card); | |
1470 | if (ret == 0) | |
1471 | ret = card->sinfo[w].stereo; | |
1472 | ||
1473 | break; | |
1474 | ||
1475 | case SOUND_PCM_WRITE_CHANNELS: | |
1476 | if (get_user(ret, (int __user *) arg)) | |
1477 | return -EFAULT; | |
1478 | ||
1479 | if (ret < 1 || ret > 3) | |
1480 | ret = card->sinfo[w].stereo + 1; | |
1481 | else { | |
1482 | card->sinfo[w].stereo = ret - 1; | |
1483 | ret = nm256_setInfo (dev, card); | |
1484 | if (ret == 0) | |
1485 | ret = card->sinfo[w].stereo + 1; | |
1486 | } | |
1487 | break; | |
1488 | ||
1489 | case SOUND_PCM_READ_CHANNELS: | |
1490 | ret = card->sinfo[w].stereo + 1; | |
1491 | break; | |
1492 | ||
1493 | case SNDCTL_DSP_SETFMT: | |
1494 | if (get_user(ret, (int __user *) arg)) | |
1495 | return -EFAULT; | |
1496 | ||
1497 | if (ret != 0) { | |
1498 | oldinfo = card->sinfo[w].bits; | |
1499 | card->sinfo[w].bits = ret; | |
1500 | ret = nm256_setInfo (dev, card); | |
1501 | if (ret != 0) | |
1502 | card->sinfo[w].bits = oldinfo; | |
1503 | } | |
1504 | if (ret == 0) | |
1505 | ret = card->sinfo[w].bits; | |
1506 | break; | |
1507 | ||
1508 | case SOUND_PCM_READ_BITS: | |
1509 | ret = card->sinfo[w].bits; | |
1510 | break; | |
1511 | ||
1512 | default: | |
1513 | return -EINVAL; | |
1514 | } | |
1515 | return put_user(ret, (int __user *) arg); | |
1516 | } | |
1517 | ||
1518 | /* | |
1519 | * Given the sound device DEV and an associated physical buffer PHYSBUF, | |
1520 | * return a pointer to the actual buffer in kernel space. | |
1521 | * | |
1522 | * This routine should exist as part of the soundcore routines. | |
1523 | */ | |
1524 | ||
1525 | static char * | |
1526 | nm256_getDMAbuffer (int dev, unsigned long physbuf) | |
1527 | { | |
1528 | struct audio_operations *adev = audio_devs[dev]; | |
1529 | struct dma_buffparms *dmap = adev->dmap_out; | |
1530 | char *dma_start = | |
1531 | (char *)(physbuf - (unsigned long)dmap->raw_buf_phys | |
1532 | + (unsigned long)dmap->raw_buf); | |
1533 | ||
1534 | return dma_start; | |
1535 | } | |
1536 | ||
1537 | ||
1538 | /* | |
1539 | * Output a block to sound device | |
1540 | * | |
1541 | * dev - device number | |
1542 | * buf - physical address of buffer | |
1543 | * total_count - total byte count in buffer | |
1544 | * intrflag - set if this has been called from an interrupt | |
1545 | * (via DMAbuf_outputintr) | |
1546 | * restart_dma - set if engine needs to be re-initialised | |
1547 | * | |
1548 | * Called when: | |
1549 | * 1. Starting output (dmabuf.c:1327) | |
1550 | * 2. (dmabuf.c:1504) | |
1551 | * 3. A new buffer needs to be sent to the device (dmabuf.c:1579) | |
1552 | */ | |
1553 | static void | |
1554 | nm256_audio_output_block(int dev, unsigned long physbuf, | |
1555 | int total_count, int intrflag) | |
1556 | { | |
1557 | struct nm256_info *card = nm256_find_card (dev); | |
1558 | ||
1559 | if (card != NULL) { | |
1560 | char *dma_buf = nm256_getDMAbuffer (dev, physbuf); | |
1561 | card->is_open_play = 1; | |
1562 | card->dev_for_play = dev; | |
1563 | nm256_write_block (card, dma_buf, total_count); | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | /* Ditto, but do recording instead. */ | |
1568 | static void | |
1569 | nm256_audio_start_input(int dev, unsigned long physbuf, int count, | |
1570 | int intrflag) | |
1571 | { | |
1572 | struct nm256_info *card = nm256_find_card (dev); | |
1573 | ||
1574 | if (card != NULL) { | |
1575 | char *dma_buf = nm256_getDMAbuffer (dev, physbuf); | |
1576 | card->is_open_record = 1; | |
1577 | card->dev_for_record = dev; | |
1578 | nm256_startRecording (card, dma_buf, count); | |
1579 | } | |
1580 | } | |
1581 | ||
1582 | /* | |
1583 | * Prepare for inputting samples to DEV. | |
1584 | * Each requested buffer will be BSIZE byes long, with a total of | |
1585 | * BCOUNT buffers. | |
1586 | */ | |
1587 | ||
1588 | static int | |
1589 | nm256_audio_prepare_for_input(int dev, int bsize, int bcount) | |
1590 | { | |
1591 | struct nm256_info *card = nm256_find_card (dev); | |
1592 | ||
1593 | if (card == NULL) | |
1594 | return -ENODEV; | |
1595 | ||
1596 | if (card->is_open_record && card->dev_for_record != dev) | |
1597 | return -EBUSY; | |
1598 | ||
1599 | audio_devs[dev]->dmap_in->flags |= DMA_NODMA; | |
1600 | return 0; | |
1601 | } | |
1602 | ||
1603 | /* | |
1604 | * Prepare for outputting samples to `dev' | |
1605 | * | |
1606 | * Each buffer that will be passed will be `bsize' bytes long, | |
1607 | * with a total of `bcount' buffers. | |
1608 | * | |
1609 | * Called when: | |
1610 | * 1. A trigger enables audio output (dmabuf.c:978) | |
1611 | * 2. We get a write buffer without dma_mode setup (dmabuf.c:1152) | |
1612 | * 3. We restart a transfer (dmabuf.c:1324) | |
1613 | */ | |
1614 | ||
1615 | static int | |
1616 | nm256_audio_prepare_for_output(int dev, int bsize, int bcount) | |
1617 | { | |
1618 | struct nm256_info *card = nm256_find_card (dev); | |
1619 | ||
1620 | if (card == NULL) | |
1621 | return -ENODEV; | |
1622 | ||
1623 | if (card->is_open_play && card->dev_for_play != dev) | |
1624 | return -EBUSY; | |
1625 | ||
1626 | audio_devs[dev]->dmap_out->flags |= DMA_NODMA; | |
1627 | return 0; | |
1628 | } | |
1629 | ||
1630 | /* Stop the current operations associated with DEV. */ | |
1631 | static void | |
1632 | nm256_audio_reset(int dev) | |
1633 | { | |
1634 | struct nm256_info *card = nm256_find_card (dev); | |
1635 | ||
1636 | if (card != NULL) { | |
1637 | if (card->dev_for_play == dev) | |
1638 | stopPlay (card); | |
1639 | if (card->dev_for_record == dev) | |
1640 | stopRecord (card); | |
1641 | } | |
1642 | } | |
1643 | ||
1644 | static int | |
1645 | nm256_audio_local_qlen(int dev) | |
1646 | { | |
1647 | return 0; | |
1648 | } | |
1649 | ||
1650 | static struct audio_driver nm256_audio_driver = | |
1651 | { | |
1652 | .owner = THIS_MODULE, | |
1653 | .open = nm256_audio_open, | |
1654 | .close = nm256_audio_close, | |
1655 | .output_block = nm256_audio_output_block, | |
1656 | .start_input = nm256_audio_start_input, | |
1657 | .ioctl = nm256_audio_ioctl, | |
1658 | .prepare_for_input = nm256_audio_prepare_for_input, | |
1659 | .prepare_for_output = nm256_audio_prepare_for_output, | |
1660 | .halt_io = nm256_audio_reset, | |
1661 | .local_qlen = nm256_audio_local_qlen, | |
1662 | }; | |
1663 | ||
1664 | static struct pci_device_id nm256_pci_tbl[] = { | |
1665 | {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO, | |
1666 | PCI_ANY_ID, PCI_ANY_ID, 0, 0}, | |
1667 | {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO, | |
1668 | PCI_ANY_ID, PCI_ANY_ID, 0, 0}, | |
1669 | {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO, | |
1670 | PCI_ANY_ID, PCI_ANY_ID, 0, 0}, | |
1671 | {0,} | |
1672 | }; | |
1673 | MODULE_DEVICE_TABLE(pci, nm256_pci_tbl); | |
1674 | MODULE_LICENSE("GPL"); | |
1675 | ||
1676 | ||
1677 | static struct pci_driver nm256_pci_driver = { | |
1678 | .name = "nm256_audio", | |
1679 | .id_table = nm256_pci_tbl, | |
1680 | .probe = nm256_probe, | |
1681 | .remove = nm256_remove, | |
1682 | }; | |
1683 | ||
1684 | module_param(usecache, bool, 0); | |
1685 | module_param(buffertop, int, 0); | |
1686 | module_param(nm256_debug, bool, 0644); | |
1687 | module_param(force_load, bool, 0); | |
1688 | ||
1689 | static int __init do_init_nm256(void) | |
1690 | { | |
1691 | printk (KERN_INFO "NeoMagic 256AV/256ZX audio driver, version 1.1p\n"); | |
1692 | return pci_module_init(&nm256_pci_driver); | |
1693 | } | |
1694 | ||
1695 | static void __exit cleanup_nm256 (void) | |
1696 | { | |
1697 | pci_unregister_driver(&nm256_pci_driver); | |
1698 | pm_unregister_all (&handle_pm_event); | |
1699 | } | |
1700 | ||
1701 | module_init(do_init_nm256); | |
1702 | module_exit(cleanup_nm256); | |
1703 | ||
1704 | /* | |
1705 | * Local variables: | |
1706 | * c-basic-offset: 4 | |
1707 | * End: | |
1708 | */ |