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