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1 /*
2 * Intel i810 and friends ICH driver for Linux
3 * Alan Cox <alan@redhat.com>
4 *
5 * Built from:
6 * Low level code: Zach Brown (original nonworking i810 OSS driver)
7 * Jaroslav Kysela <perex@suse.cz> (working ALSA driver)
8 *
9 * Framework: Thomas Sailer <sailer@ife.ee.ethz.ch>
10 * Extended by: Zach Brown <zab@redhat.com>
11 * and others..
12 *
13 * Hardware Provided By:
14 * Analog Devices (A major AC97 codec maker)
15 * Intel Corp (you've probably heard of them already)
16 *
17 * AC97 clues and assistance provided by
18 * Analog Devices
19 * Zach 'Fufu' Brown
20 * Jeff Garzik
21 *
22 * This program is free software; you can redistribute it and/or modify
23 * it under the terms of the GNU General Public License as published by
24 * the Free Software Foundation; either version 2 of the License, or
25 * (at your option) any later version.
26 *
27 * This program is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU General Public License for more details.
31 *
32 * You should have received a copy of the GNU General Public License
33 * along with this program; if not, write to the Free Software
34 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
35 *
36 *
37 * Intel 810 theory of operation
38 *
39 * The chipset provides three DMA channels that talk to an AC97
40 * CODEC (AC97 is a digital/analog mixer standard). At its simplest
41 * you get 48Khz audio with basic volume and mixer controls. At the
42 * best you get rate adaption in the codec. We set the card up so
43 * that we never take completion interrupts but instead keep the card
44 * chasing its tail around a ring buffer. This is needed for mmap
45 * mode audio and happens to work rather well for non-mmap modes too.
46 *
47 * The board has one output channel for PCM audio (supported) and
48 * a stereo line in and mono microphone input. Again these are normally
49 * locked to 48Khz only. Right now recording is not finished.
50 *
51 * There is no midi support, no synth support. Use timidity. To get
52 * esd working you need to use esd -r 48000 as it won't probe 48KHz
53 * by default. mpg123 can't handle 48Khz only audio so use xmms.
54 *
55 * Fix The Sound On Dell
56 *
57 * Not everyone uses 48KHz. We know of no way to detect this reliably
58 * and certainly not to get the right data. If your i810 audio sounds
59 * stupid you may need to investigate other speeds. According to Analog
60 * they tend to use a 14.318MHz clock which gives you a base rate of
61 * 41194Hz.
62 *
63 * This is available via the 'ftsodell=1' option.
64 *
65 * If you need to force a specific rate set the clocking= option
66 *
67 * This driver is cursed. (Ben LaHaise)
68 *
69 * ICH 3 caveats
70 * Intel errata #7 for ICH3 IO. We need to disable SMI stuff
71 * when codec probing. [Not Yet Done]
72 *
73 * ICH 4 caveats
74 *
75 * The ICH4 has the feature, that the codec ID doesn't have to be
76 * congruent with the IO connection.
77 *
78 * Therefore, from driver version 0.23 on, there is a "codec ID" <->
79 * "IO register base offset" mapping (card->ac97_id_map) field.
80 *
81 * Juergen "George" Sawinski (jsaw)
82 */
83
84 #include <linux/module.h>
85 #include <linux/string.h>
86 #include <linux/ctype.h>
87 #include <linux/ioport.h>
88 #include <linux/sched.h>
89 #include <linux/delay.h>
90 #include <linux/sound.h>
91 #include <linux/slab.h>
92 #include <linux/soundcard.h>
93 #include <linux/pci.h>
94 #include <linux/interrupt.h>
95 #include <asm/io.h>
96 #include <asm/dma.h>
97 #include <linux/init.h>
98 #include <linux/poll.h>
99 #include <linux/spinlock.h>
100 #include <linux/smp_lock.h>
101 #include <linux/ac97_codec.h>
102 #include <linux/bitops.h>
103 #include <asm/uaccess.h>
104
105 #define DRIVER_VERSION "1.01"
106
107 #define MODULOP2(a, b) ((a) & ((b) - 1))
108 #define MASKP2(a, b) ((a) & ~((b) - 1))
109
110 static int ftsodell;
111 static int strict_clocking;
112 static unsigned int clocking;
113 static int spdif_locked;
114 static int ac97_quirk = AC97_TUNE_DEFAULT;
115
116 //#define DEBUG
117 //#define DEBUG2
118 //#define DEBUG_INTERRUPTS
119 //#define DEBUG_MMAP
120 //#define DEBUG_MMIO
121
122 #define ADC_RUNNING 1
123 #define DAC_RUNNING 2
124
125 #define I810_FMT_16BIT 1
126 #define I810_FMT_STEREO 2
127 #define I810_FMT_MASK 3
128
129 #define SPDIF_ON 0x0004
130 #define SURR_ON 0x0010
131 #define CENTER_LFE_ON 0x0020
132 #define VOL_MUTED 0x8000
133
134 /* the 810's array of pointers to data buffers */
135
136 struct sg_item {
137 #define BUSADDR_MASK 0xFFFFFFFE
138 u32 busaddr;
139 #define CON_IOC 0x80000000 /* interrupt on completion */
140 #define CON_BUFPAD 0x40000000 /* pad underrun with last sample, else 0 */
141 #define CON_BUFLEN_MASK 0x0000ffff /* buffer length in samples */
142 u32 control;
143 };
144
145 /* an instance of the i810 channel */
146 #define SG_LEN 32
147 struct i810_channel
148 {
149 /* these sg guys should probably be allocated
150 separately as nocache. Must be 8 byte aligned */
151 struct sg_item sg[SG_LEN]; /* 32*8 */
152 u32 offset; /* 4 */
153 u32 port; /* 4 */
154 u32 used;
155 u32 num;
156 };
157
158 /*
159 * we have 3 separate dma engines. pcm in, pcm out, and mic.
160 * each dma engine has controlling registers. These goofy
161 * names are from the datasheet, but make it easy to write
162 * code while leafing through it.
163 *
164 * ICH4 has 6 dma engines, pcm in, pcm out, mic, pcm in 2,
165 * mic in 2, s/pdif. Of special interest is the fact that
166 * the upper 3 DMA engines on the ICH4 *must* be accessed
167 * via mmio access instead of pio access.
168 */
169
170 #define ENUM_ENGINE(PRE,DIG) \
171 enum { \
172 PRE##_BASE = 0x##DIG##0, /* Base Address */ \
173 PRE##_BDBAR = 0x##DIG##0, /* Buffer Descriptor list Base Address */ \
174 PRE##_CIV = 0x##DIG##4, /* Current Index Value */ \
175 PRE##_LVI = 0x##DIG##5, /* Last Valid Index */ \
176 PRE##_SR = 0x##DIG##6, /* Status Register */ \
177 PRE##_PICB = 0x##DIG##8, /* Position In Current Buffer */ \
178 PRE##_PIV = 0x##DIG##a, /* Prefetched Index Value */ \
179 PRE##_CR = 0x##DIG##b /* Control Register */ \
180 }
181
182 ENUM_ENGINE(OFF,0); /* Offsets */
183 ENUM_ENGINE(PI,0); /* PCM In */
184 ENUM_ENGINE(PO,1); /* PCM Out */
185 ENUM_ENGINE(MC,2); /* Mic In */
186
187 enum {
188 GLOB_CNT = 0x2c, /* Global Control */
189 GLOB_STA = 0x30, /* Global Status */
190 CAS = 0x34 /* Codec Write Semaphore Register */
191 };
192
193 ENUM_ENGINE(MC2,4); /* Mic In 2 */
194 ENUM_ENGINE(PI2,5); /* PCM In 2 */
195 ENUM_ENGINE(SP,6); /* S/PDIF */
196
197 enum {
198 SDM = 0x80 /* SDATA_IN Map Register */
199 };
200
201 /* interrupts for a dma engine */
202 #define DMA_INT_FIFO (1<<4) /* fifo under/over flow */
203 #define DMA_INT_COMPLETE (1<<3) /* buffer read/write complete and ioc set */
204 #define DMA_INT_LVI (1<<2) /* last valid done */
205 #define DMA_INT_CELV (1<<1) /* last valid is current */
206 #define DMA_INT_DCH (1) /* DMA Controller Halted (happens on LVI interrupts) */
207 #define DMA_INT_MASK (DMA_INT_FIFO|DMA_INT_COMPLETE|DMA_INT_LVI)
208
209 /* interrupts for the whole chip */
210 #define INT_SEC (1<<11)
211 #define INT_PRI (1<<10)
212 #define INT_MC (1<<7)
213 #define INT_PO (1<<6)
214 #define INT_PI (1<<5)
215 #define INT_MO (1<<2)
216 #define INT_NI (1<<1)
217 #define INT_GPI (1<<0)
218 #define INT_MASK (INT_SEC|INT_PRI|INT_MC|INT_PO|INT_PI|INT_MO|INT_NI|INT_GPI)
219
220 /* magic numbers to protect our data structures */
221 #define I810_CARD_MAGIC 0x5072696E /* "Prin" */
222 #define I810_STATE_MAGIC 0x63657373 /* "cess" */
223 #define I810_DMA_MASK 0xffffffff /* DMA buffer mask for pci_alloc_consist */
224 #define NR_HW_CH 3
225
226 /* maxinum number of AC97 codecs connected, AC97 2.0 defined 4 */
227 #define NR_AC97 4
228
229 /* Please note that an 8bit mono stream is not valid on this card, you must have a 16bit */
230 /* stream at a minimum for this card to be happy */
231 static const unsigned sample_size[] = { 1, 2, 2, 4 };
232 /* Samples are 16bit values, so we are shifting to a word, not to a byte, hence shift */
233 /* values are one less than might be expected */
234 static const unsigned sample_shift[] = { -1, 0, 0, 1 };
235
236 enum {
237 ICH82801AA = 0,
238 ICH82901AB,
239 INTEL440MX,
240 INTELICH2,
241 INTELICH3,
242 INTELICH4,
243 INTELICH5,
244 SI7012,
245 NVIDIA_NFORCE,
246 AMD768,
247 AMD8111
248 };
249
250 static char * card_names[] = {
251 "Intel ICH 82801AA",
252 "Intel ICH 82901AB",
253 "Intel 440MX",
254 "Intel ICH2",
255 "Intel ICH3",
256 "Intel ICH4",
257 "Intel ICH5",
258 "SiS 7012",
259 "NVIDIA nForce Audio",
260 "AMD 768",
261 "AMD-8111 IOHub"
262 };
263
264 /* These are capabilities (and bugs) the chipsets _can_ have */
265 static struct {
266 int16_t nr_ac97;
267 #define CAP_MMIO 0x0001
268 #define CAP_20BIT_AUDIO_SUPPORT 0x0002
269 u_int16_t flags;
270 } card_cap[] = {
271 { 1, 0x0000 }, /* ICH82801AA */
272 { 1, 0x0000 }, /* ICH82901AB */
273 { 1, 0x0000 }, /* INTEL440MX */
274 { 1, 0x0000 }, /* INTELICH2 */
275 { 2, 0x0000 }, /* INTELICH3 */
276 { 3, 0x0003 }, /* INTELICH4 */
277 { 3, 0x0003 }, /* INTELICH5 */
278 /*@FIXME to be verified*/ { 2, 0x0000 }, /* SI7012 */
279 /*@FIXME to be verified*/ { 2, 0x0000 }, /* NVIDIA_NFORCE */
280 /*@FIXME to be verified*/ { 2, 0x0000 }, /* AMD768 */
281 /*@FIXME to be verified*/ { 3, 0x0001 }, /* AMD8111 */
282 };
283
284 static struct pci_device_id i810_pci_tbl [] = {
285 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_5,
286 PCI_ANY_ID, PCI_ANY_ID, 0, 0, ICH82801AA},
287 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_5,
288 PCI_ANY_ID, PCI_ANY_ID, 0, 0, ICH82901AB},
289 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_440MX,
290 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTEL440MX},
291 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_4,
292 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH2},
293 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_5,
294 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH3},
295 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_5,
296 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH4},
297 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_5,
298 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH5},
299 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7012,
300 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SI7012},
301 {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP1_AUDIO,
302 PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
303 {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP2_AUDIO,
304 PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
305 {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP3_AUDIO,
306 PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
307 {PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_OPUS_7445,
308 PCI_ANY_ID, PCI_ANY_ID, 0, 0, AMD768},
309 {PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_AUDIO,
310 PCI_ANY_ID, PCI_ANY_ID, 0, 0, AMD8111},
311 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_5,
312 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH4},
313 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_18,
314 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH4},
315
316 {0,}
317 };
318
319 MODULE_DEVICE_TABLE (pci, i810_pci_tbl);
320
321 #ifdef CONFIG_PM
322 #define PM_SUSPENDED(card) (card->pm_suspended)
323 #else
324 #define PM_SUSPENDED(card) (0)
325 #endif
326
327 /* "software" or virtual channel, an instance of opened /dev/dsp */
328 struct i810_state {
329 unsigned int magic;
330 struct i810_card *card; /* Card info */
331
332 /* single open lock mechanism, only used for recording */
333 struct semaphore open_sem;
334 wait_queue_head_t open_wait;
335
336 /* file mode */
337 mode_t open_mode;
338
339 /* virtual channel number */
340 int virt;
341
342 #ifdef CONFIG_PM
343 unsigned int pm_saved_dac_rate,pm_saved_adc_rate;
344 #endif
345 struct dmabuf {
346 /* wave sample stuff */
347 unsigned int rate;
348 unsigned char fmt, enable, trigger;
349
350 /* hardware channel */
351 struct i810_channel *read_channel;
352 struct i810_channel *write_channel;
353
354 /* OSS buffer management stuff */
355 void *rawbuf;
356 dma_addr_t dma_handle;
357 unsigned buforder;
358 unsigned numfrag;
359 unsigned fragshift;
360
361 /* our buffer acts like a circular ring */
362 unsigned hwptr; /* where dma last started, updated by update_ptr */
363 unsigned swptr; /* where driver last clear/filled, updated by read/write */
364 int count; /* bytes to be consumed or been generated by dma machine */
365 unsigned total_bytes; /* total bytes dmaed by hardware */
366
367 unsigned error; /* number of over/underruns */
368 wait_queue_head_t wait; /* put process on wait queue when no more space in buffer */
369
370 /* redundant, but makes calculations easier */
371 /* what the hardware uses */
372 unsigned dmasize;
373 unsigned fragsize;
374 unsigned fragsamples;
375
376 /* what we tell the user to expect */
377 unsigned userfrags;
378 unsigned userfragsize;
379
380 /* OSS stuff */
381 unsigned mapped:1;
382 unsigned ready:1;
383 unsigned update_flag;
384 unsigned ossfragsize;
385 unsigned ossmaxfrags;
386 unsigned subdivision;
387 } dmabuf;
388 };
389
390
391 struct i810_card {
392 unsigned int magic;
393
394 /* We keep i810 cards in a linked list */
395 struct i810_card *next;
396
397 /* The i810 has a certain amount of cross channel interaction
398 so we use a single per card lock */
399 spinlock_t lock;
400
401 /* Control AC97 access serialization */
402 spinlock_t ac97_lock;
403
404 /* PCI device stuff */
405 struct pci_dev * pci_dev;
406 u16 pci_id;
407 u16 pci_id_internal; /* used to access card_cap[] */
408 #ifdef CONFIG_PM
409 u16 pm_suspended;
410 int pm_saved_mixer_settings[SOUND_MIXER_NRDEVICES][NR_AC97];
411 #endif
412 /* soundcore stuff */
413 int dev_audio;
414
415 /* structures for abstraction of hardware facilities, codecs, banks and channels*/
416 u16 ac97_id_map[NR_AC97];
417 struct ac97_codec *ac97_codec[NR_AC97];
418 struct i810_state *states[NR_HW_CH];
419 struct i810_channel *channel; /* 1:1 to states[] but diff. lifetime */
420 dma_addr_t chandma;
421
422 u16 ac97_features;
423 u16 ac97_status;
424 u16 channels;
425
426 /* hardware resources */
427 unsigned long ac97base;
428 unsigned long iobase;
429 u32 irq;
430
431 unsigned long ac97base_mmio_phys;
432 unsigned long iobase_mmio_phys;
433 u_int8_t __iomem *ac97base_mmio;
434 u_int8_t __iomem *iobase_mmio;
435
436 int use_mmio;
437
438 /* Function support */
439 struct i810_channel *(*alloc_pcm_channel)(struct i810_card *);
440 struct i810_channel *(*alloc_rec_pcm_channel)(struct i810_card *);
441 struct i810_channel *(*alloc_rec_mic_channel)(struct i810_card *);
442 void (*free_pcm_channel)(struct i810_card *, int chan);
443
444 /* We have a *very* long init time possibly, so use this to block */
445 /* attempts to open our devices before we are ready (stops oops'es) */
446 int initializing;
447 };
448
449 /* extract register offset from codec struct */
450 #define IO_REG_OFF(codec) (((struct i810_card *) codec->private_data)->ac97_id_map[codec->id])
451
452 #define I810_IOREAD(size, type, card, off) \
453 ({ \
454 type val; \
455 if (card->use_mmio) \
456 val=read##size(card->iobase_mmio+off); \
457 else \
458 val=in##size(card->iobase+off); \
459 val; \
460 })
461
462 #define I810_IOREADL(card, off) I810_IOREAD(l, u32, card, off)
463 #define I810_IOREADW(card, off) I810_IOREAD(w, u16, card, off)
464 #define I810_IOREADB(card, off) I810_IOREAD(b, u8, card, off)
465
466 #define I810_IOWRITE(size, val, card, off) \
467 ({ \
468 if (card->use_mmio) \
469 write##size(val, card->iobase_mmio+off); \
470 else \
471 out##size(val, card->iobase+off); \
472 })
473
474 #define I810_IOWRITEL(val, card, off) I810_IOWRITE(l, val, card, off)
475 #define I810_IOWRITEW(val, card, off) I810_IOWRITE(w, val, card, off)
476 #define I810_IOWRITEB(val, card, off) I810_IOWRITE(b, val, card, off)
477
478 #define GET_CIV(card, port) MODULOP2(I810_IOREADB((card), (port) + OFF_CIV), SG_LEN)
479 #define GET_LVI(card, port) MODULOP2(I810_IOREADB((card), (port) + OFF_LVI), SG_LEN)
480
481 /* set LVI from CIV */
482 #define CIV_TO_LVI(card, port, off) \
483 I810_IOWRITEB(MODULOP2(GET_CIV((card), (port)) + (off), SG_LEN), (card), (port) + OFF_LVI)
484
485 static struct ac97_quirk ac97_quirks[] __devinitdata = {
486 {
487 .vendor = 0x0e11,
488 .device = 0x00b8,
489 .name = "Compaq Evo D510C",
490 .type = AC97_TUNE_HP_ONLY
491 },
492 {
493 .vendor = 0x1028,
494 .device = 0x00d8,
495 .name = "Dell Precision 530", /* AD1885 */
496 .type = AC97_TUNE_HP_ONLY
497 },
498 {
499 .vendor = 0x1028,
500 .device = 0x0126,
501 .name = "Dell Optiplex GX260", /* AD1981A */
502 .type = AC97_TUNE_HP_ONLY
503 },
504 {
505 .vendor = 0x1028,
506 .device = 0x012d,
507 .name = "Dell Precision 450", /* AD1981B*/
508 .type = AC97_TUNE_HP_ONLY
509 },
510 { /* FIXME: which codec? */
511 .vendor = 0x103c,
512 .device = 0x00c3,
513 .name = "Hewlett-Packard onboard",
514 .type = AC97_TUNE_HP_ONLY
515 },
516 {
517 .vendor = 0x103c,
518 .device = 0x12f1,
519 .name = "HP xw8200", /* AD1981B*/
520 .type = AC97_TUNE_HP_ONLY
521 },
522 {
523 .vendor = 0x103c,
524 .device = 0x3008,
525 .name = "HP xw4200", /* AD1981B*/
526 .type = AC97_TUNE_HP_ONLY
527 },
528 {
529 .vendor = 0x10f1,
530 .device = 0x2665,
531 .name = "Fujitsu-Siemens Celsius", /* AD1981? */
532 .type = AC97_TUNE_HP_ONLY
533 },
534 {
535 .vendor = 0x10f1,
536 .device = 0x2885,
537 .name = "AMD64 Mobo", /* ALC650 */
538 .type = AC97_TUNE_HP_ONLY
539 },
540 {
541 .vendor = 0x110a,
542 .device = 0x0056,
543 .name = "Fujitsu-Siemens Scenic", /* AD1981? */
544 .type = AC97_TUNE_HP_ONLY
545 },
546 {
547 .vendor = 0x11d4,
548 .device = 0x5375,
549 .name = "ADI AD1985 (discrete)",
550 .type = AC97_TUNE_HP_ONLY
551 },
552 {
553 .vendor = 0x1462,
554 .device = 0x5470,
555 .name = "MSI P4 ATX 645 Ultra",
556 .type = AC97_TUNE_HP_ONLY
557 },
558 {
559 .vendor = 0x1734,
560 .device = 0x0088,
561 .name = "Fujitsu-Siemens D1522", /* AD1981 */
562 .type = AC97_TUNE_HP_ONLY
563 },
564 {
565 .vendor = 0x8086,
566 .device = 0x4856,
567 .name = "Intel D845WN (82801BA)",
568 .type = AC97_TUNE_SWAP_HP
569 },
570 {
571 .vendor = 0x8086,
572 .device = 0x4d44,
573 .name = "Intel D850EMV2", /* AD1885 */
574 .type = AC97_TUNE_HP_ONLY
575 },
576 {
577 .vendor = 0x8086,
578 .device = 0x4d56,
579 .name = "Intel ICH/AD1885",
580 .type = AC97_TUNE_HP_ONLY
581 },
582 {
583 .vendor = 0x1028,
584 .device = 0x012d,
585 .name = "Dell Precision 450", /* AD1981B*/
586 .type = AC97_TUNE_HP_ONLY
587 },
588 {
589 .vendor = 0x103c,
590 .device = 0x3008,
591 .name = "HP xw4200", /* AD1981B*/
592 .type = AC97_TUNE_HP_ONLY
593 },
594 {
595 .vendor = 0x103c,
596 .device = 0x12f1,
597 .name = "HP xw8200", /* AD1981B*/
598 .type = AC97_TUNE_HP_ONLY
599 },
600 { } /* terminator */
601 };
602
603 static struct i810_card *devs = NULL;
604
605 static int i810_open_mixdev(struct inode *inode, struct file *file);
606 static int i810_ioctl_mixdev(struct inode *inode, struct file *file,
607 unsigned int cmd, unsigned long arg);
608 static u16 i810_ac97_get(struct ac97_codec *dev, u8 reg);
609 static void i810_ac97_set(struct ac97_codec *dev, u8 reg, u16 data);
610 static u16 i810_ac97_get_mmio(struct ac97_codec *dev, u8 reg);
611 static void i810_ac97_set_mmio(struct ac97_codec *dev, u8 reg, u16 data);
612 static u16 i810_ac97_get_io(struct ac97_codec *dev, u8 reg);
613 static void i810_ac97_set_io(struct ac97_codec *dev, u8 reg, u16 data);
614
615 static struct i810_channel *i810_alloc_pcm_channel(struct i810_card *card)
616 {
617 if(card->channel[1].used==1)
618 return NULL;
619 card->channel[1].used=1;
620 return &card->channel[1];
621 }
622
623 static struct i810_channel *i810_alloc_rec_pcm_channel(struct i810_card *card)
624 {
625 if(card->channel[0].used==1)
626 return NULL;
627 card->channel[0].used=1;
628 return &card->channel[0];
629 }
630
631 static struct i810_channel *i810_alloc_rec_mic_channel(struct i810_card *card)
632 {
633 if(card->channel[2].used==1)
634 return NULL;
635 card->channel[2].used=1;
636 return &card->channel[2];
637 }
638
639 static void i810_free_pcm_channel(struct i810_card *card, int channel)
640 {
641 card->channel[channel].used=0;
642 }
643
644 static int i810_valid_spdif_rate ( struct ac97_codec *codec, int rate )
645 {
646 unsigned long id = 0L;
647
648 id = (i810_ac97_get(codec, AC97_VENDOR_ID1) << 16);
649 id |= i810_ac97_get(codec, AC97_VENDOR_ID2) & 0xffff;
650 #ifdef DEBUG
651 printk ( "i810_audio: codec = %s, codec_id = 0x%08lx\n", codec->name, id);
652 #endif
653 switch ( id ) {
654 case 0x41445361: /* AD1886 */
655 if (rate == 48000) {
656 return 1;
657 }
658 break;
659 default: /* all other codecs, until we know otherwiae */
660 if (rate == 48000 || rate == 44100 || rate == 32000) {
661 return 1;
662 }
663 break;
664 }
665 return (0);
666 }
667
668 /* i810_set_spdif_output
669 *
670 * Configure the S/PDIF output transmitter. When we turn on
671 * S/PDIF, we turn off the analog output. This may not be
672 * the right thing to do.
673 *
674 * Assumptions:
675 * The DSP sample rate must already be set to a supported
676 * S/PDIF rate (32kHz, 44.1kHz, or 48kHz) or we abort.
677 */
678 static int i810_set_spdif_output(struct i810_state *state, int slots, int rate)
679 {
680 int vol;
681 int aud_reg;
682 int r = 0;
683 struct ac97_codec *codec = state->card->ac97_codec[0];
684
685 if(!codec->codec_ops->digital) {
686 state->card->ac97_status &= ~SPDIF_ON;
687 } else {
688 if ( slots == -1 ) { /* Turn off S/PDIF */
689 codec->codec_ops->digital(codec, 0, 0, 0);
690 /* If the volume wasn't muted before we turned on S/PDIF, unmute it */
691 if ( !(state->card->ac97_status & VOL_MUTED) ) {
692 aud_reg = i810_ac97_get(codec, AC97_MASTER_VOL_STEREO);
693 i810_ac97_set(codec, AC97_MASTER_VOL_STEREO, (aud_reg & ~VOL_MUTED));
694 }
695 state->card->ac97_status &= ~(VOL_MUTED | SPDIF_ON);
696 return 0;
697 }
698
699 vol = i810_ac97_get(codec, AC97_MASTER_VOL_STEREO);
700 state->card->ac97_status = vol & VOL_MUTED;
701
702 r = codec->codec_ops->digital(codec, slots, rate, 0);
703
704 if(r)
705 state->card->ac97_status |= SPDIF_ON;
706 else
707 state->card->ac97_status &= ~SPDIF_ON;
708
709 /* Mute the analog output */
710 /* Should this only mute the PCM volume??? */
711 i810_ac97_set(codec, AC97_MASTER_VOL_STEREO, (vol | VOL_MUTED));
712 }
713 return r;
714 }
715
716 /* i810_set_dac_channels
717 *
718 * Configure the codec's multi-channel DACs
719 *
720 * The logic is backwards. Setting the bit to 1 turns off the DAC.
721 *
722 * What about the ICH? We currently configure it using the
723 * SNDCTL_DSP_CHANNELS ioctl. If we're turnning on the DAC,
724 * does that imply that we want the ICH set to support
725 * these channels?
726 *
727 * TODO:
728 * vailidate that the codec really supports these DACs
729 * before turning them on.
730 */
731 static void i810_set_dac_channels(struct i810_state *state, int channel)
732 {
733 int aud_reg;
734 struct ac97_codec *codec = state->card->ac97_codec[0];
735
736 /* No codec, no setup */
737
738 if(codec == NULL)
739 return;
740
741 aud_reg = i810_ac97_get(codec, AC97_EXTENDED_STATUS);
742 aud_reg |= AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK;
743 state->card->ac97_status &= ~(SURR_ON | CENTER_LFE_ON);
744
745 switch ( channel ) {
746 case 2: /* always enabled */
747 break;
748 case 4:
749 aud_reg &= ~AC97_EA_PRJ;
750 state->card->ac97_status |= SURR_ON;
751 break;
752 case 6:
753 aud_reg &= ~(AC97_EA_PRJ | AC97_EA_PRI | AC97_EA_PRK);
754 state->card->ac97_status |= SURR_ON | CENTER_LFE_ON;
755 break;
756 default:
757 break;
758 }
759 i810_ac97_set(codec, AC97_EXTENDED_STATUS, aud_reg);
760
761 }
762
763
764 /* set playback sample rate */
765 static unsigned int i810_set_dac_rate(struct i810_state * state, unsigned int rate)
766 {
767 struct dmabuf *dmabuf = &state->dmabuf;
768 u32 new_rate;
769 struct ac97_codec *codec=state->card->ac97_codec[0];
770
771 if(!(state->card->ac97_features&0x0001))
772 {
773 dmabuf->rate = clocking;
774 #ifdef DEBUG
775 printk("Asked for %d Hz, but ac97_features says we only do %dHz. Sorry!\n",
776 rate,clocking);
777 #endif
778 return clocking;
779 }
780
781 if (rate > 48000)
782 rate = 48000;
783 if (rate < 8000)
784 rate = 8000;
785 dmabuf->rate = rate;
786
787 /*
788 * Adjust for misclocked crap
789 */
790 rate = ( rate * clocking)/48000;
791 if(strict_clocking && rate < 8000) {
792 rate = 8000;
793 dmabuf->rate = (rate * 48000)/clocking;
794 }
795
796 new_rate=ac97_set_dac_rate(codec, rate);
797 if(new_rate != rate) {
798 dmabuf->rate = (new_rate * 48000)/clocking;
799 }
800 #ifdef DEBUG
801 printk("i810_audio: called i810_set_dac_rate : asked for %d, got %d\n", rate, dmabuf->rate);
802 #endif
803 rate = new_rate;
804 return dmabuf->rate;
805 }
806
807 /* set recording sample rate */
808 static unsigned int i810_set_adc_rate(struct i810_state * state, unsigned int rate)
809 {
810 struct dmabuf *dmabuf = &state->dmabuf;
811 u32 new_rate;
812 struct ac97_codec *codec=state->card->ac97_codec[0];
813
814 if(!(state->card->ac97_features&0x0001))
815 {
816 dmabuf->rate = clocking;
817 return clocking;
818 }
819
820 if (rate > 48000)
821 rate = 48000;
822 if (rate < 8000)
823 rate = 8000;
824 dmabuf->rate = rate;
825
826 /*
827 * Adjust for misclocked crap
828 */
829
830 rate = ( rate * clocking)/48000;
831 if(strict_clocking && rate < 8000) {
832 rate = 8000;
833 dmabuf->rate = (rate * 48000)/clocking;
834 }
835
836 new_rate = ac97_set_adc_rate(codec, rate);
837
838 if(new_rate != rate) {
839 dmabuf->rate = (new_rate * 48000)/clocking;
840 rate = new_rate;
841 }
842 #ifdef DEBUG
843 printk("i810_audio: called i810_set_adc_rate : rate = %d/%d\n", dmabuf->rate, rate);
844 #endif
845 return dmabuf->rate;
846 }
847
848 /* get current playback/recording dma buffer pointer (byte offset from LBA),
849 called with spinlock held! */
850
851 static inline unsigned i810_get_dma_addr(struct i810_state *state, int rec)
852 {
853 struct dmabuf *dmabuf = &state->dmabuf;
854 unsigned int civ, offset, port, port_picb, bytes = 2;
855
856 if (!dmabuf->enable)
857 return 0;
858
859 if (rec)
860 port = dmabuf->read_channel->port;
861 else
862 port = dmabuf->write_channel->port;
863
864 if(state->card->pci_id == PCI_DEVICE_ID_SI_7012) {
865 port_picb = port + OFF_SR;
866 bytes = 1;
867 } else
868 port_picb = port + OFF_PICB;
869
870 do {
871 civ = GET_CIV(state->card, port);
872 offset = I810_IOREADW(state->card, port_picb);
873 /* Must have a delay here! */
874 if(offset == 0)
875 udelay(1);
876 /* Reread both registers and make sure that that total
877 * offset from the first reading to the second is 0.
878 * There is an issue with SiS hardware where it will count
879 * picb down to 0, then update civ to the next value,
880 * then set the new picb to fragsize bytes. We can catch
881 * it between the civ update and the picb update, making
882 * it look as though we are 1 fragsize ahead of where we
883 * are. The next to we get the address though, it will
884 * be back in the right place, and we will suddenly think
885 * we just went forward dmasize - fragsize bytes, causing
886 * totally stupid *huge* dma overrun messages. We are
887 * assuming that the 1us delay is more than long enough
888 * that we won't have to worry about the chip still being
889 * out of sync with reality ;-)
890 */
891 } while (civ != GET_CIV(state->card, port) || offset != I810_IOREADW(state->card, port_picb));
892
893 return (((civ + 1) * dmabuf->fragsize - (bytes * offset))
894 % dmabuf->dmasize);
895 }
896
897 /* Stop recording (lock held) */
898 static inline void __stop_adc(struct i810_state *state)
899 {
900 struct dmabuf *dmabuf = &state->dmabuf;
901 struct i810_card *card = state->card;
902
903 dmabuf->enable &= ~ADC_RUNNING;
904 I810_IOWRITEB(0, card, PI_CR);
905 // wait for the card to acknowledge shutdown
906 while( I810_IOREADB(card, PI_CR) != 0 ) ;
907 // now clear any latent interrupt bits (like the halt bit)
908 if(card->pci_id == PCI_DEVICE_ID_SI_7012)
909 I810_IOWRITEB( I810_IOREADB(card, PI_PICB), card, PI_PICB );
910 else
911 I810_IOWRITEB( I810_IOREADB(card, PI_SR), card, PI_SR );
912 I810_IOWRITEL( I810_IOREADL(card, GLOB_STA) & INT_PI, card, GLOB_STA);
913 }
914
915 static void stop_adc(struct i810_state *state)
916 {
917 struct i810_card *card = state->card;
918 unsigned long flags;
919
920 spin_lock_irqsave(&card->lock, flags);
921 __stop_adc(state);
922 spin_unlock_irqrestore(&card->lock, flags);
923 }
924
925 static inline void __start_adc(struct i810_state *state)
926 {
927 struct dmabuf *dmabuf = &state->dmabuf;
928
929 if (dmabuf->count < dmabuf->dmasize && dmabuf->ready && !dmabuf->enable &&
930 (dmabuf->trigger & PCM_ENABLE_INPUT)) {
931 dmabuf->enable |= ADC_RUNNING;
932 // Interrupt enable, LVI enable, DMA enable
933 I810_IOWRITEB(0x10 | 0x04 | 0x01, state->card, PI_CR);
934 }
935 }
936
937 static void start_adc(struct i810_state *state)
938 {
939 struct i810_card *card = state->card;
940 unsigned long flags;
941
942 spin_lock_irqsave(&card->lock, flags);
943 __start_adc(state);
944 spin_unlock_irqrestore(&card->lock, flags);
945 }
946
947 /* stop playback (lock held) */
948 static inline void __stop_dac(struct i810_state *state)
949 {
950 struct dmabuf *dmabuf = &state->dmabuf;
951 struct i810_card *card = state->card;
952
953 dmabuf->enable &= ~DAC_RUNNING;
954 I810_IOWRITEB(0, card, PO_CR);
955 // wait for the card to acknowledge shutdown
956 while( I810_IOREADB(card, PO_CR) != 0 ) ;
957 // now clear any latent interrupt bits (like the halt bit)
958 if(card->pci_id == PCI_DEVICE_ID_SI_7012)
959 I810_IOWRITEB( I810_IOREADB(card, PO_PICB), card, PO_PICB );
960 else
961 I810_IOWRITEB( I810_IOREADB(card, PO_SR), card, PO_SR );
962 I810_IOWRITEL( I810_IOREADL(card, GLOB_STA) & INT_PO, card, GLOB_STA);
963 }
964
965 static void stop_dac(struct i810_state *state)
966 {
967 struct i810_card *card = state->card;
968 unsigned long flags;
969
970 spin_lock_irqsave(&card->lock, flags);
971 __stop_dac(state);
972 spin_unlock_irqrestore(&card->lock, flags);
973 }
974
975 static inline void __start_dac(struct i810_state *state)
976 {
977 struct dmabuf *dmabuf = &state->dmabuf;
978
979 if (dmabuf->count > 0 && dmabuf->ready && !dmabuf->enable &&
980 (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
981 dmabuf->enable |= DAC_RUNNING;
982 // Interrupt enable, LVI enable, DMA enable
983 I810_IOWRITEB(0x10 | 0x04 | 0x01, state->card, PO_CR);
984 }
985 }
986 static void start_dac(struct i810_state *state)
987 {
988 struct i810_card *card = state->card;
989 unsigned long flags;
990
991 spin_lock_irqsave(&card->lock, flags);
992 __start_dac(state);
993 spin_unlock_irqrestore(&card->lock, flags);
994 }
995
996 #define DMABUF_DEFAULTORDER (16-PAGE_SHIFT)
997 #define DMABUF_MINORDER 1
998
999 /* allocate DMA buffer, playback and recording buffer should be allocated separately */
1000 static int alloc_dmabuf(struct i810_state *state)
1001 {
1002 struct dmabuf *dmabuf = &state->dmabuf;
1003 void *rawbuf= NULL;
1004 int order, size;
1005 struct page *page, *pend;
1006
1007 /* If we don't have any oss frag params, then use our default ones */
1008 if(dmabuf->ossmaxfrags == 0)
1009 dmabuf->ossmaxfrags = 4;
1010 if(dmabuf->ossfragsize == 0)
1011 dmabuf->ossfragsize = (PAGE_SIZE<<DMABUF_DEFAULTORDER)/dmabuf->ossmaxfrags;
1012 size = dmabuf->ossfragsize * dmabuf->ossmaxfrags;
1013
1014 if(dmabuf->rawbuf && (PAGE_SIZE << dmabuf->buforder) == size)
1015 return 0;
1016 /* alloc enough to satisfy the oss params */
1017 for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--) {
1018 if ( (PAGE_SIZE<<order) > size )
1019 continue;
1020 if ((rawbuf = pci_alloc_consistent(state->card->pci_dev,
1021 PAGE_SIZE << order,
1022 &dmabuf->dma_handle)))
1023 break;
1024 }
1025 if (!rawbuf)
1026 return -ENOMEM;
1027
1028
1029 #ifdef DEBUG
1030 printk("i810_audio: allocated %ld (order = %d) bytes at %p\n",
1031 PAGE_SIZE << order, order, rawbuf);
1032 #endif
1033
1034 dmabuf->ready = dmabuf->mapped = 0;
1035 dmabuf->rawbuf = rawbuf;
1036 dmabuf->buforder = order;
1037
1038 /* now mark the pages as reserved; otherwise remap_pfn_range doesn't do what we want */
1039 pend = virt_to_page(rawbuf + (PAGE_SIZE << order) - 1);
1040 for (page = virt_to_page(rawbuf); page <= pend; page++)
1041 SetPageReserved(page);
1042
1043 return 0;
1044 }
1045
1046 /* free DMA buffer */
1047 static void dealloc_dmabuf(struct i810_state *state)
1048 {
1049 struct dmabuf *dmabuf = &state->dmabuf;
1050 struct page *page, *pend;
1051
1052 if (dmabuf->rawbuf) {
1053 /* undo marking the pages as reserved */
1054 pend = virt_to_page(dmabuf->rawbuf + (PAGE_SIZE << dmabuf->buforder) - 1);
1055 for (page = virt_to_page(dmabuf->rawbuf); page <= pend; page++)
1056 ClearPageReserved(page);
1057 pci_free_consistent(state->card->pci_dev, PAGE_SIZE << dmabuf->buforder,
1058 dmabuf->rawbuf, dmabuf->dma_handle);
1059 }
1060 dmabuf->rawbuf = NULL;
1061 dmabuf->mapped = dmabuf->ready = 0;
1062 }
1063
1064 static int prog_dmabuf(struct i810_state *state, unsigned rec)
1065 {
1066 struct dmabuf *dmabuf = &state->dmabuf;
1067 struct i810_channel *c;
1068 struct sg_item *sg;
1069 unsigned long flags;
1070 int ret;
1071 unsigned fragint;
1072 int i;
1073
1074 spin_lock_irqsave(&state->card->lock, flags);
1075 if(dmabuf->enable & DAC_RUNNING)
1076 __stop_dac(state);
1077 if(dmabuf->enable & ADC_RUNNING)
1078 __stop_adc(state);
1079 dmabuf->total_bytes = 0;
1080 dmabuf->count = dmabuf->error = 0;
1081 dmabuf->swptr = dmabuf->hwptr = 0;
1082 spin_unlock_irqrestore(&state->card->lock, flags);
1083
1084 /* allocate DMA buffer, let alloc_dmabuf determine if we are already
1085 * allocated well enough or if we should replace the current buffer
1086 * (assuming one is already allocated, if it isn't, then allocate it).
1087 */
1088 if ((ret = alloc_dmabuf(state)))
1089 return ret;
1090
1091 /* FIXME: figure out all this OSS fragment stuff */
1092 /* I did, it now does what it should according to the OSS API. DL */
1093 /* We may not have realloced our dmabuf, but the fragment size to
1094 * fragment number ratio may have changed, so go ahead and reprogram
1095 * things
1096 */
1097 dmabuf->dmasize = PAGE_SIZE << dmabuf->buforder;
1098 dmabuf->numfrag = SG_LEN;
1099 dmabuf->fragsize = dmabuf->dmasize/dmabuf->numfrag;
1100 dmabuf->fragsamples = dmabuf->fragsize >> 1;
1101 dmabuf->fragshift = ffs(dmabuf->fragsize) - 1;
1102 dmabuf->userfragsize = dmabuf->ossfragsize;
1103 dmabuf->userfrags = dmabuf->dmasize/dmabuf->ossfragsize;
1104
1105 memset(dmabuf->rawbuf, 0, dmabuf->dmasize);
1106
1107 if(dmabuf->ossmaxfrags == 4) {
1108 fragint = 8;
1109 } else if (dmabuf->ossmaxfrags == 8) {
1110 fragint = 4;
1111 } else if (dmabuf->ossmaxfrags == 16) {
1112 fragint = 2;
1113 } else {
1114 fragint = 1;
1115 }
1116 /*
1117 * Now set up the ring
1118 */
1119 if(dmabuf->read_channel)
1120 c = dmabuf->read_channel;
1121 else
1122 c = dmabuf->write_channel;
1123 while(c != NULL) {
1124 sg=&c->sg[0];
1125 /*
1126 * Load up 32 sg entries and take an interrupt at half
1127 * way (we might want more interrupts later..)
1128 */
1129
1130 for(i=0;i<dmabuf->numfrag;i++)
1131 {
1132 sg->busaddr=(u32)dmabuf->dma_handle+dmabuf->fragsize*i;
1133 // the card will always be doing 16bit stereo
1134 sg->control=dmabuf->fragsamples;
1135 if(state->card->pci_id == PCI_DEVICE_ID_SI_7012)
1136 sg->control <<= 1;
1137 sg->control|=CON_BUFPAD;
1138 // set us up to get IOC interrupts as often as needed to
1139 // satisfy numfrag requirements, no more
1140 if( ((i+1) % fragint) == 0) {
1141 sg->control|=CON_IOC;
1142 }
1143 sg++;
1144 }
1145 spin_lock_irqsave(&state->card->lock, flags);
1146 I810_IOWRITEB(2, state->card, c->port+OFF_CR); /* reset DMA machine */
1147 while( I810_IOREADB(state->card, c->port+OFF_CR) & 0x02 ) ;
1148 I810_IOWRITEL((u32)state->card->chandma +
1149 c->num*sizeof(struct i810_channel),
1150 state->card, c->port+OFF_BDBAR);
1151 CIV_TO_LVI(state->card, c->port, 0);
1152
1153 spin_unlock_irqrestore(&state->card->lock, flags);
1154
1155 if(c != dmabuf->write_channel)
1156 c = dmabuf->write_channel;
1157 else
1158 c = NULL;
1159 }
1160
1161 /* set the ready flag for the dma buffer */
1162 dmabuf->ready = 1;
1163
1164 #ifdef DEBUG
1165 printk("i810_audio: prog_dmabuf, sample rate = %d, format = %d,\n\tnumfrag = %d, "
1166 "fragsize = %d dmasize = %d\n",
1167 dmabuf->rate, dmabuf->fmt, dmabuf->numfrag,
1168 dmabuf->fragsize, dmabuf->dmasize);
1169 #endif
1170
1171 return 0;
1172 }
1173
1174 static void __i810_update_lvi(struct i810_state *state, int rec)
1175 {
1176 struct dmabuf *dmabuf = &state->dmabuf;
1177 int x, port;
1178 int trigger;
1179 int count, fragsize;
1180 void (*start)(struct i810_state *);
1181
1182 count = dmabuf->count;
1183 if (rec) {
1184 port = dmabuf->read_channel->port;
1185 trigger = PCM_ENABLE_INPUT;
1186 start = __start_adc;
1187 count = dmabuf->dmasize - count;
1188 } else {
1189 port = dmabuf->write_channel->port;
1190 trigger = PCM_ENABLE_OUTPUT;
1191 start = __start_dac;
1192 }
1193
1194 /* Do not process partial fragments. */
1195 fragsize = dmabuf->fragsize;
1196 if (count < fragsize)
1197 return;
1198
1199 /* if we are currently stopped, then our CIV is actually set to our
1200 * *last* sg segment and we are ready to wrap to the next. However,
1201 * if we set our LVI to the last sg segment, then it won't wrap to
1202 * the next sg segment, it won't even get a start. So, instead, when
1203 * we are stopped, we set both the LVI value and also we increment
1204 * the CIV value to the next sg segment to be played so that when
1205 * we call start, things will operate properly. Since the CIV can't
1206 * be written to directly for this purpose, we set the LVI to CIV + 1
1207 * temporarily. Once the engine has started we set the LVI to its
1208 * final value.
1209 */
1210 if (!dmabuf->enable && dmabuf->ready) {
1211 if (!(dmabuf->trigger & trigger))
1212 return;
1213
1214 CIV_TO_LVI(state->card, port, 1);
1215
1216 start(state);
1217 while (!(I810_IOREADB(state->card, port + OFF_CR) & ((1<<4) | (1<<2))))
1218 ;
1219 }
1220
1221 /* MASKP2(swptr, fragsize) - 1 is the tail of our transfer */
1222 x = MODULOP2(MASKP2(dmabuf->swptr, fragsize) - 1, dmabuf->dmasize);
1223 x >>= dmabuf->fragshift;
1224 I810_IOWRITEB(x, state->card, port + OFF_LVI);
1225 }
1226
1227 static void i810_update_lvi(struct i810_state *state, int rec)
1228 {
1229 struct dmabuf *dmabuf = &state->dmabuf;
1230 unsigned long flags;
1231
1232 if(!dmabuf->ready)
1233 return;
1234 spin_lock_irqsave(&state->card->lock, flags);
1235 __i810_update_lvi(state, rec);
1236 spin_unlock_irqrestore(&state->card->lock, flags);
1237 }
1238
1239 /* update buffer manangement pointers, especially, dmabuf->count and dmabuf->hwptr */
1240 static void i810_update_ptr(struct i810_state *state)
1241 {
1242 struct dmabuf *dmabuf = &state->dmabuf;
1243 unsigned hwptr;
1244 unsigned fragmask, dmamask;
1245 int diff;
1246
1247 fragmask = MASKP2(~0, dmabuf->fragsize);
1248 dmamask = MODULOP2(~0, dmabuf->dmasize);
1249
1250 /* error handling and process wake up for ADC */
1251 if (dmabuf->enable == ADC_RUNNING) {
1252 /* update hardware pointer */
1253 hwptr = i810_get_dma_addr(state, 1) & fragmask;
1254 diff = (hwptr - dmabuf->hwptr) & dmamask;
1255 #if defined(DEBUG_INTERRUPTS) || defined(DEBUG_MMAP)
1256 printk("ADC HWP %d,%d,%d\n", hwptr, dmabuf->hwptr, diff);
1257 #endif
1258 dmabuf->hwptr = hwptr;
1259 dmabuf->total_bytes += diff;
1260 dmabuf->count += diff;
1261 if (dmabuf->count > dmabuf->dmasize) {
1262 /* buffer underrun or buffer overrun */
1263 /* this is normal for the end of a read */
1264 /* only give an error if we went past the */
1265 /* last valid sg entry */
1266 if (GET_CIV(state->card, PI_BASE) !=
1267 GET_LVI(state->card, PI_BASE)) {
1268 printk(KERN_WARNING "i810_audio: DMA overrun on read\n");
1269 dmabuf->error++;
1270 }
1271 }
1272 if (diff)
1273 wake_up(&dmabuf->wait);
1274 }
1275 /* error handling and process wake up for DAC */
1276 if (dmabuf->enable == DAC_RUNNING) {
1277 /* update hardware pointer */
1278 hwptr = i810_get_dma_addr(state, 0) & fragmask;
1279 diff = (hwptr - dmabuf->hwptr) & dmamask;
1280 #if defined(DEBUG_INTERRUPTS) || defined(DEBUG_MMAP)
1281 printk("DAC HWP %d,%d,%d\n", hwptr, dmabuf->hwptr, diff);
1282 #endif
1283 dmabuf->hwptr = hwptr;
1284 dmabuf->total_bytes += diff;
1285 dmabuf->count -= diff;
1286 if (dmabuf->count < 0) {
1287 /* buffer underrun or buffer overrun */
1288 /* this is normal for the end of a write */
1289 /* only give an error if we went past the */
1290 /* last valid sg entry */
1291 if (GET_CIV(state->card, PO_BASE) !=
1292 GET_LVI(state->card, PO_BASE)) {
1293 printk(KERN_WARNING "i810_audio: DMA overrun on write\n");
1294 printk("i810_audio: CIV %d, LVI %d, hwptr %x, "
1295 "count %d\n",
1296 GET_CIV(state->card, PO_BASE),
1297 GET_LVI(state->card, PO_BASE),
1298 dmabuf->hwptr, dmabuf->count);
1299 dmabuf->error++;
1300 }
1301 }
1302 if (diff)
1303 wake_up(&dmabuf->wait);
1304 }
1305 }
1306
1307 static inline int i810_get_free_write_space(struct i810_state *state)
1308 {
1309 struct dmabuf *dmabuf = &state->dmabuf;
1310 int free;
1311
1312 i810_update_ptr(state);
1313 // catch underruns during playback
1314 if (dmabuf->count < 0) {
1315 dmabuf->count = 0;
1316 dmabuf->swptr = dmabuf->hwptr;
1317 }
1318 free = dmabuf->dmasize - dmabuf->count;
1319 if(free < 0)
1320 return(0);
1321 return(free);
1322 }
1323
1324 static inline int i810_get_available_read_data(struct i810_state *state)
1325 {
1326 struct dmabuf *dmabuf = &state->dmabuf;
1327 int avail;
1328
1329 i810_update_ptr(state);
1330 // catch overruns during record
1331 if (dmabuf->count > dmabuf->dmasize) {
1332 dmabuf->count = dmabuf->dmasize;
1333 dmabuf->swptr = dmabuf->hwptr;
1334 }
1335 avail = dmabuf->count;
1336 if(avail < 0)
1337 return(0);
1338 return(avail);
1339 }
1340
1341 static inline void fill_partial_frag(struct dmabuf *dmabuf)
1342 {
1343 unsigned fragsize;
1344 unsigned swptr, len;
1345
1346 fragsize = dmabuf->fragsize;
1347 swptr = dmabuf->swptr;
1348 len = fragsize - MODULOP2(dmabuf->swptr, fragsize);
1349 if (len == fragsize)
1350 return;
1351
1352 memset(dmabuf->rawbuf + swptr, '\0', len);
1353 dmabuf->swptr = MODULOP2(swptr + len, dmabuf->dmasize);
1354 dmabuf->count += len;
1355 }
1356
1357 static int drain_dac(struct i810_state *state, int signals_allowed)
1358 {
1359 DECLARE_WAITQUEUE(wait, current);
1360 struct dmabuf *dmabuf = &state->dmabuf;
1361 unsigned long flags;
1362 unsigned long tmo;
1363 int count;
1364
1365 if (!dmabuf->ready)
1366 return 0;
1367 if(dmabuf->mapped) {
1368 stop_dac(state);
1369 return 0;
1370 }
1371
1372 spin_lock_irqsave(&state->card->lock, flags);
1373
1374 fill_partial_frag(dmabuf);
1375
1376 /*
1377 * This will make sure that our LVI is correct, that our
1378 * pointer is updated, and that the DAC is running. We
1379 * have to force the setting of dmabuf->trigger to avoid
1380 * any possible deadlocks.
1381 */
1382 dmabuf->trigger = PCM_ENABLE_OUTPUT;
1383 __i810_update_lvi(state, 0);
1384
1385 spin_unlock_irqrestore(&state->card->lock, flags);
1386
1387 add_wait_queue(&dmabuf->wait, &wait);
1388 for (;;) {
1389
1390 spin_lock_irqsave(&state->card->lock, flags);
1391 i810_update_ptr(state);
1392 count = dmabuf->count;
1393
1394 /* It seems that we have to set the current state to
1395 * TASK_INTERRUPTIBLE every time to make the process
1396 * really go to sleep. This also has to be *after* the
1397 * update_ptr() call because update_ptr is likely to
1398 * do a wake_up() which will unset this before we ever
1399 * try to sleep, resuling in a tight loop in this code
1400 * instead of actually sleeping and waiting for an
1401 * interrupt to wake us up!
1402 */
1403 __set_current_state(signals_allowed ?
1404 TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
1405 spin_unlock_irqrestore(&state->card->lock, flags);
1406
1407 if (count <= 0)
1408 break;
1409
1410 if (signal_pending(current) && signals_allowed) {
1411 break;
1412 }
1413
1414 /*
1415 * set the timeout to significantly longer than it *should*
1416 * take for the DAC to drain the DMA buffer
1417 */
1418 tmo = (count * HZ) / (dmabuf->rate);
1419 if (!schedule_timeout(tmo >= 2 ? tmo : 2)){
1420 printk(KERN_ERR "i810_audio: drain_dac, dma timeout?\n");
1421 count = 0;
1422 break;
1423 }
1424 }
1425 set_current_state(TASK_RUNNING);
1426 remove_wait_queue(&dmabuf->wait, &wait);
1427 if(count > 0 && signal_pending(current) && signals_allowed)
1428 return -ERESTARTSYS;
1429 stop_dac(state);
1430 return 0;
1431 }
1432
1433 static void i810_channel_interrupt(struct i810_card *card)
1434 {
1435 int i, count;
1436
1437 #ifdef DEBUG_INTERRUPTS
1438 printk("CHANNEL ");
1439 #endif
1440 for(i=0;i<NR_HW_CH;i++)
1441 {
1442 struct i810_state *state = card->states[i];
1443 struct i810_channel *c;
1444 struct dmabuf *dmabuf;
1445 unsigned long port;
1446 u16 status;
1447
1448 if(!state)
1449 continue;
1450 if(!state->dmabuf.ready)
1451 continue;
1452 dmabuf = &state->dmabuf;
1453 if(dmabuf->enable & DAC_RUNNING) {
1454 c=dmabuf->write_channel;
1455 } else if(dmabuf->enable & ADC_RUNNING) {
1456 c=dmabuf->read_channel;
1457 } else /* This can occur going from R/W to close */
1458 continue;
1459
1460 port = c->port;
1461
1462 if(card->pci_id == PCI_DEVICE_ID_SI_7012)
1463 status = I810_IOREADW(card, port + OFF_PICB);
1464 else
1465 status = I810_IOREADW(card, port + OFF_SR);
1466
1467 #ifdef DEBUG_INTERRUPTS
1468 printk("NUM %d PORT %X IRQ ( ST%d ", c->num, c->port, status);
1469 #endif
1470 if(status & DMA_INT_COMPLETE)
1471 {
1472 /* only wake_up() waiters if this interrupt signals
1473 * us being beyond a userfragsize of data open or
1474 * available, and i810_update_ptr() does that for
1475 * us
1476 */
1477 i810_update_ptr(state);
1478 #ifdef DEBUG_INTERRUPTS
1479 printk("COMP %d ", dmabuf->hwptr /
1480 dmabuf->fragsize);
1481 #endif
1482 }
1483 if(status & (DMA_INT_LVI | DMA_INT_DCH))
1484 {
1485 /* wake_up() unconditionally on LVI and DCH */
1486 i810_update_ptr(state);
1487 wake_up(&dmabuf->wait);
1488 #ifdef DEBUG_INTERRUPTS
1489 if(status & DMA_INT_LVI)
1490 printk("LVI ");
1491 if(status & DMA_INT_DCH)
1492 printk("DCH -");
1493 #endif
1494 count = dmabuf->count;
1495 if(dmabuf->enable & ADC_RUNNING)
1496 count = dmabuf->dmasize - count;
1497 if (count >= (int)dmabuf->fragsize) {
1498 I810_IOWRITEB(I810_IOREADB(card, port+OFF_CR) | 1, card, port+OFF_CR);
1499 #ifdef DEBUG_INTERRUPTS
1500 printk(" CONTINUE ");
1501 #endif
1502 } else {
1503 if (dmabuf->enable & DAC_RUNNING)
1504 __stop_dac(state);
1505 if (dmabuf->enable & ADC_RUNNING)
1506 __stop_adc(state);
1507 dmabuf->enable = 0;
1508 #ifdef DEBUG_INTERRUPTS
1509 printk(" STOP ");
1510 #endif
1511 }
1512 }
1513 if(card->pci_id == PCI_DEVICE_ID_SI_7012)
1514 I810_IOWRITEW(status & DMA_INT_MASK, card, port + OFF_PICB);
1515 else
1516 I810_IOWRITEW(status & DMA_INT_MASK, card, port + OFF_SR);
1517 }
1518 #ifdef DEBUG_INTERRUPTS
1519 printk(")\n");
1520 #endif
1521 }
1522
1523 static irqreturn_t i810_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1524 {
1525 struct i810_card *card = (struct i810_card *)dev_id;
1526 u32 status;
1527
1528 spin_lock(&card->lock);
1529
1530 status = I810_IOREADL(card, GLOB_STA);
1531
1532 if(!(status & INT_MASK))
1533 {
1534 spin_unlock(&card->lock);
1535 return IRQ_NONE; /* not for us */
1536 }
1537
1538 if(status & (INT_PO|INT_PI|INT_MC))
1539 i810_channel_interrupt(card);
1540
1541 /* clear 'em */
1542 I810_IOWRITEL(status & INT_MASK, card, GLOB_STA);
1543 spin_unlock(&card->lock);
1544 return IRQ_HANDLED;
1545 }
1546
1547 /* in this loop, dmabuf.count signifies the amount of data that is
1548 waiting to be copied to the user's buffer. It is filled by the dma
1549 machine and drained by this loop. */
1550
1551 static ssize_t i810_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
1552 {
1553 struct i810_state *state = (struct i810_state *)file->private_data;
1554 struct i810_card *card=state ? state->card : NULL;
1555 struct dmabuf *dmabuf = &state->dmabuf;
1556 ssize_t ret;
1557 unsigned long flags;
1558 unsigned int swptr;
1559 int cnt;
1560 int pending;
1561 DECLARE_WAITQUEUE(waita, current);
1562
1563 #ifdef DEBUG2
1564 printk("i810_audio: i810_read called, count = %d\n", count);
1565 #endif
1566
1567 if (dmabuf->mapped)
1568 return -ENXIO;
1569 if (dmabuf->enable & DAC_RUNNING)
1570 return -ENODEV;
1571 if (!dmabuf->read_channel) {
1572 dmabuf->ready = 0;
1573 dmabuf->read_channel = card->alloc_rec_pcm_channel(card);
1574 if (!dmabuf->read_channel) {
1575 return -EBUSY;
1576 }
1577 }
1578 if (!dmabuf->ready && (ret = prog_dmabuf(state, 1)))
1579 return ret;
1580 if (!access_ok(VERIFY_WRITE, buffer, count))
1581 return -EFAULT;
1582 ret = 0;
1583
1584 pending = 0;
1585
1586 add_wait_queue(&dmabuf->wait, &waita);
1587 while (count > 0) {
1588 set_current_state(TASK_INTERRUPTIBLE);
1589 spin_lock_irqsave(&card->lock, flags);
1590 if (PM_SUSPENDED(card)) {
1591 spin_unlock_irqrestore(&card->lock, flags);
1592 schedule();
1593 if (signal_pending(current)) {
1594 if (!ret) ret = -EAGAIN;
1595 break;
1596 }
1597 continue;
1598 }
1599 cnt = i810_get_available_read_data(state);
1600 swptr = dmabuf->swptr;
1601 // this is to make the copy_to_user simpler below
1602 if(cnt > (dmabuf->dmasize - swptr))
1603 cnt = dmabuf->dmasize - swptr;
1604 spin_unlock_irqrestore(&card->lock, flags);
1605
1606 if (cnt > count)
1607 cnt = count;
1608 if (cnt <= 0) {
1609 unsigned long tmo;
1610 /*
1611 * Don't let us deadlock. The ADC won't start if
1612 * dmabuf->trigger isn't set. A call to SETTRIGGER
1613 * could have turned it off after we set it to on
1614 * previously.
1615 */
1616 dmabuf->trigger = PCM_ENABLE_INPUT;
1617 /*
1618 * This does three things. Updates LVI to be correct,
1619 * makes sure the ADC is running, and updates the
1620 * hwptr.
1621 */
1622 i810_update_lvi(state,1);
1623 if (file->f_flags & O_NONBLOCK) {
1624 if (!ret) ret = -EAGAIN;
1625 goto done;
1626 }
1627 /* Set the timeout to how long it would take to fill
1628 * two of our buffers. If we haven't been woke up
1629 * by then, then we know something is wrong.
1630 */
1631 tmo = (dmabuf->dmasize * HZ * 2) / (dmabuf->rate * 4);
1632 /* There are two situations when sleep_on_timeout returns, one is when
1633 the interrupt is serviced correctly and the process is waked up by
1634 ISR ON TIME. Another is when timeout is expired, which means that
1635 either interrupt is NOT serviced correctly (pending interrupt) or it
1636 is TOO LATE for the process to be scheduled to run (scheduler latency)
1637 which results in a (potential) buffer overrun. And worse, there is
1638 NOTHING we can do to prevent it. */
1639 if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
1640 #ifdef DEBUG
1641 printk(KERN_ERR "i810_audio: recording schedule timeout, "
1642 "dmasz %u fragsz %u count %i hwptr %u swptr %u\n",
1643 dmabuf->dmasize, dmabuf->fragsize, dmabuf->count,
1644 dmabuf->hwptr, dmabuf->swptr);
1645 #endif
1646 /* a buffer overrun, we delay the recovery until next time the
1647 while loop begin and we REALLY have space to record */
1648 }
1649 if (signal_pending(current)) {
1650 ret = ret ? ret : -ERESTARTSYS;
1651 goto done;
1652 }
1653 continue;
1654 }
1655
1656 if (copy_to_user(buffer, dmabuf->rawbuf + swptr, cnt)) {
1657 if (!ret) ret = -EFAULT;
1658 goto done;
1659 }
1660
1661 swptr = MODULOP2(swptr + cnt, dmabuf->dmasize);
1662
1663 spin_lock_irqsave(&card->lock, flags);
1664
1665 if (PM_SUSPENDED(card)) {
1666 spin_unlock_irqrestore(&card->lock, flags);
1667 continue;
1668 }
1669 dmabuf->swptr = swptr;
1670 pending = dmabuf->count -= cnt;
1671 spin_unlock_irqrestore(&card->lock, flags);
1672
1673 count -= cnt;
1674 buffer += cnt;
1675 ret += cnt;
1676 }
1677 done:
1678 pending = dmabuf->dmasize - pending;
1679 if (dmabuf->enable || pending >= dmabuf->userfragsize)
1680 i810_update_lvi(state, 1);
1681 set_current_state(TASK_RUNNING);
1682 remove_wait_queue(&dmabuf->wait, &waita);
1683
1684 return ret;
1685 }
1686
1687 /* in this loop, dmabuf.count signifies the amount of data that is waiting to be dma to
1688 the soundcard. it is drained by the dma machine and filled by this loop. */
1689 static ssize_t i810_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
1690 {
1691 struct i810_state *state = (struct i810_state *)file->private_data;
1692 struct i810_card *card=state ? state->card : NULL;
1693 struct dmabuf *dmabuf = &state->dmabuf;
1694 ssize_t ret;
1695 unsigned long flags;
1696 unsigned int swptr = 0;
1697 int pending;
1698 int cnt;
1699 DECLARE_WAITQUEUE(waita, current);
1700
1701 #ifdef DEBUG2
1702 printk("i810_audio: i810_write called, count = %d\n", count);
1703 #endif
1704
1705 if (dmabuf->mapped)
1706 return -ENXIO;
1707 if (dmabuf->enable & ADC_RUNNING)
1708 return -ENODEV;
1709 if (!dmabuf->write_channel) {
1710 dmabuf->ready = 0;
1711 dmabuf->write_channel = card->alloc_pcm_channel(card);
1712 if(!dmabuf->write_channel)
1713 return -EBUSY;
1714 }
1715 if (!dmabuf->ready && (ret = prog_dmabuf(state, 0)))
1716 return ret;
1717 if (!access_ok(VERIFY_READ, buffer, count))
1718 return -EFAULT;
1719 ret = 0;
1720
1721 pending = 0;
1722
1723 add_wait_queue(&dmabuf->wait, &waita);
1724 while (count > 0) {
1725 set_current_state(TASK_INTERRUPTIBLE);
1726 spin_lock_irqsave(&state->card->lock, flags);
1727 if (PM_SUSPENDED(card)) {
1728 spin_unlock_irqrestore(&card->lock, flags);
1729 schedule();
1730 if (signal_pending(current)) {
1731 if (!ret) ret = -EAGAIN;
1732 break;
1733 }
1734 continue;
1735 }
1736
1737 cnt = i810_get_free_write_space(state);
1738 swptr = dmabuf->swptr;
1739 /* Bound the maximum size to how much we can copy to the
1740 * dma buffer before we hit the end. If we have more to
1741 * copy then it will get done in a second pass of this
1742 * loop starting from the beginning of the buffer.
1743 */
1744 if(cnt > (dmabuf->dmasize - swptr))
1745 cnt = dmabuf->dmasize - swptr;
1746 spin_unlock_irqrestore(&state->card->lock, flags);
1747
1748 #ifdef DEBUG2
1749 printk(KERN_INFO "i810_audio: i810_write: %d bytes available space\n", cnt);
1750 #endif
1751 if (cnt > count)
1752 cnt = count;
1753 if (cnt <= 0) {
1754 unsigned long tmo;
1755 // There is data waiting to be played
1756 /*
1757 * Force the trigger setting since we would
1758 * deadlock with it set any other way
1759 */
1760 dmabuf->trigger = PCM_ENABLE_OUTPUT;
1761 i810_update_lvi(state,0);
1762 if (file->f_flags & O_NONBLOCK) {
1763 if (!ret) ret = -EAGAIN;
1764 goto ret;
1765 }
1766 /* Not strictly correct but works */
1767 tmo = (dmabuf->dmasize * HZ * 2) / (dmabuf->rate * 4);
1768 /* There are two situations when sleep_on_timeout returns, one is when
1769 the interrupt is serviced correctly and the process is waked up by
1770 ISR ON TIME. Another is when timeout is expired, which means that
1771 either interrupt is NOT serviced correctly (pending interrupt) or it
1772 is TOO LATE for the process to be scheduled to run (scheduler latency)
1773 which results in a (potential) buffer underrun. And worse, there is
1774 NOTHING we can do to prevent it. */
1775 if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
1776 #ifdef DEBUG
1777 printk(KERN_ERR "i810_audio: playback schedule timeout, "
1778 "dmasz %u fragsz %u count %i hwptr %u swptr %u\n",
1779 dmabuf->dmasize, dmabuf->fragsize, dmabuf->count,
1780 dmabuf->hwptr, dmabuf->swptr);
1781 #endif
1782 /* a buffer underrun, we delay the recovery until next time the
1783 while loop begin and we REALLY have data to play */
1784 //return ret;
1785 }
1786 if (signal_pending(current)) {
1787 if (!ret) ret = -ERESTARTSYS;
1788 goto ret;
1789 }
1790 continue;
1791 }
1792 if (copy_from_user(dmabuf->rawbuf+swptr,buffer,cnt)) {
1793 if (!ret) ret = -EFAULT;
1794 goto ret;
1795 }
1796
1797 swptr = MODULOP2(swptr + cnt, dmabuf->dmasize);
1798
1799 spin_lock_irqsave(&state->card->lock, flags);
1800 if (PM_SUSPENDED(card)) {
1801 spin_unlock_irqrestore(&card->lock, flags);
1802 continue;
1803 }
1804
1805 dmabuf->swptr = swptr;
1806 pending = dmabuf->count += cnt;
1807
1808 count -= cnt;
1809 buffer += cnt;
1810 ret += cnt;
1811 spin_unlock_irqrestore(&state->card->lock, flags);
1812 }
1813 ret:
1814 if (dmabuf->enable || pending >= dmabuf->userfragsize)
1815 i810_update_lvi(state, 0);
1816 set_current_state(TASK_RUNNING);
1817 remove_wait_queue(&dmabuf->wait, &waita);
1818
1819 return ret;
1820 }
1821
1822 /* No kernel lock - we have our own spinlock */
1823 static unsigned int i810_poll(struct file *file, struct poll_table_struct *wait)
1824 {
1825 struct i810_state *state = (struct i810_state *)file->private_data;
1826 struct dmabuf *dmabuf = &state->dmabuf;
1827 unsigned long flags;
1828 unsigned int mask = 0;
1829
1830 if(!dmabuf->ready)
1831 return 0;
1832 poll_wait(file, &dmabuf->wait, wait);
1833 spin_lock_irqsave(&state->card->lock, flags);
1834 if (dmabuf->enable & ADC_RUNNING ||
1835 dmabuf->trigger & PCM_ENABLE_INPUT) {
1836 if (i810_get_available_read_data(state) >=
1837 (signed)dmabuf->userfragsize)
1838 mask |= POLLIN | POLLRDNORM;
1839 }
1840 if (dmabuf->enable & DAC_RUNNING ||
1841 dmabuf->trigger & PCM_ENABLE_OUTPUT) {
1842 if (i810_get_free_write_space(state) >=
1843 (signed)dmabuf->userfragsize)
1844 mask |= POLLOUT | POLLWRNORM;
1845 }
1846 spin_unlock_irqrestore(&state->card->lock, flags);
1847 return mask;
1848 }
1849
1850 static int i810_mmap(struct file *file, struct vm_area_struct *vma)
1851 {
1852 struct i810_state *state = (struct i810_state *)file->private_data;
1853 struct dmabuf *dmabuf = &state->dmabuf;
1854 int ret = -EINVAL;
1855 unsigned long size;
1856
1857 lock_kernel();
1858 if (vma->vm_flags & VM_WRITE) {
1859 if (!dmabuf->write_channel &&
1860 (dmabuf->write_channel =
1861 state->card->alloc_pcm_channel(state->card)) == NULL) {
1862 ret = -EBUSY;
1863 goto out;
1864 }
1865 }
1866 if (vma->vm_flags & VM_READ) {
1867 if (!dmabuf->read_channel &&
1868 (dmabuf->read_channel =
1869 state->card->alloc_rec_pcm_channel(state->card)) == NULL) {
1870 ret = -EBUSY;
1871 goto out;
1872 }
1873 }
1874 if ((ret = prog_dmabuf(state, 0)) != 0)
1875 goto out;
1876
1877 ret = -EINVAL;
1878 if (vma->vm_pgoff != 0)
1879 goto out;
1880 size = vma->vm_end - vma->vm_start;
1881 if (size > (PAGE_SIZE << dmabuf->buforder))
1882 goto out;
1883 ret = -EAGAIN;
1884 if (remap_pfn_range(vma, vma->vm_start,
1885 virt_to_phys(dmabuf->rawbuf) >> PAGE_SHIFT,
1886 size, vma->vm_page_prot))
1887 goto out;
1888 dmabuf->mapped = 1;
1889 dmabuf->trigger = 0;
1890 ret = 0;
1891 #ifdef DEBUG_MMAP
1892 printk("i810_audio: mmap'ed %ld bytes of data space\n", size);
1893 #endif
1894 out:
1895 unlock_kernel();
1896 return ret;
1897 }
1898
1899 static int i810_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
1900 {
1901 struct i810_state *state = (struct i810_state *)file->private_data;
1902 struct i810_channel *c = NULL;
1903 struct dmabuf *dmabuf = &state->dmabuf;
1904 unsigned long flags;
1905 audio_buf_info abinfo;
1906 count_info cinfo;
1907 unsigned int i_glob_cnt;
1908 int val = 0, ret;
1909 struct ac97_codec *codec = state->card->ac97_codec[0];
1910 void __user *argp = (void __user *)arg;
1911 int __user *p = argp;
1912
1913 #ifdef DEBUG
1914 printk("i810_audio: i810_ioctl, arg=0x%x, cmd=", arg ? *p : 0);
1915 #endif
1916
1917 switch (cmd)
1918 {
1919 case OSS_GETVERSION:
1920 #ifdef DEBUG
1921 printk("OSS_GETVERSION\n");
1922 #endif
1923 return put_user(SOUND_VERSION, p);
1924
1925 case SNDCTL_DSP_RESET:
1926 #ifdef DEBUG
1927 printk("SNDCTL_DSP_RESET\n");
1928 #endif
1929 spin_lock_irqsave(&state->card->lock, flags);
1930 if (dmabuf->enable == DAC_RUNNING) {
1931 c = dmabuf->write_channel;
1932 __stop_dac(state);
1933 }
1934 if (dmabuf->enable == ADC_RUNNING) {
1935 c = dmabuf->read_channel;
1936 __stop_adc(state);
1937 }
1938 if (c != NULL) {
1939 I810_IOWRITEB(2, state->card, c->port+OFF_CR); /* reset DMA machine */
1940 while ( I810_IOREADB(state->card, c->port+OFF_CR) & 2 )
1941 cpu_relax();
1942 I810_IOWRITEL((u32)state->card->chandma +
1943 c->num*sizeof(struct i810_channel),
1944 state->card, c->port+OFF_BDBAR);
1945 CIV_TO_LVI(state->card, c->port, 0);
1946 }
1947
1948 spin_unlock_irqrestore(&state->card->lock, flags);
1949 synchronize_irq(state->card->pci_dev->irq);
1950 dmabuf->ready = 0;
1951 dmabuf->swptr = dmabuf->hwptr = 0;
1952 dmabuf->count = dmabuf->total_bytes = 0;
1953 return 0;
1954
1955 case SNDCTL_DSP_SYNC:
1956 #ifdef DEBUG
1957 printk("SNDCTL_DSP_SYNC\n");
1958 #endif
1959 if (dmabuf->enable != DAC_RUNNING || file->f_flags & O_NONBLOCK)
1960 return 0;
1961 if((val = drain_dac(state, 1)))
1962 return val;
1963 dmabuf->total_bytes = 0;
1964 return 0;
1965
1966 case SNDCTL_DSP_SPEED: /* set smaple rate */
1967 #ifdef DEBUG
1968 printk("SNDCTL_DSP_SPEED\n");
1969 #endif
1970 if (get_user(val, p))
1971 return -EFAULT;
1972 if (val >= 0) {
1973 if (file->f_mode & FMODE_WRITE) {
1974 if ( (state->card->ac97_status & SPDIF_ON) ) { /* S/PDIF Enabled */
1975 /* AD1886 only supports 48000, need to check that */
1976 if ( i810_valid_spdif_rate ( codec, val ) ) {
1977 /* Set DAC rate */
1978 i810_set_spdif_output ( state, -1, 0 );
1979 stop_dac(state);
1980 dmabuf->ready = 0;
1981 spin_lock_irqsave(&state->card->lock, flags);
1982 i810_set_dac_rate(state, val);
1983 spin_unlock_irqrestore(&state->card->lock, flags);
1984 /* Set S/PDIF transmitter rate. */
1985 i810_set_spdif_output ( state, AC97_EA_SPSA_3_4, val );
1986 if ( ! (state->card->ac97_status & SPDIF_ON) ) {
1987 val = dmabuf->rate;
1988 }
1989 } else { /* Not a valid rate for S/PDIF, ignore it */
1990 val = dmabuf->rate;
1991 }
1992 } else {
1993 stop_dac(state);
1994 dmabuf->ready = 0;
1995 spin_lock_irqsave(&state->card->lock, flags);
1996 i810_set_dac_rate(state, val);
1997 spin_unlock_irqrestore(&state->card->lock, flags);
1998 }
1999 }
2000 if (file->f_mode & FMODE_READ) {
2001 stop_adc(state);
2002 dmabuf->ready = 0;
2003 spin_lock_irqsave(&state->card->lock, flags);
2004 i810_set_adc_rate(state, val);
2005 spin_unlock_irqrestore(&state->card->lock, flags);
2006 }
2007 }
2008 return put_user(dmabuf->rate, p);
2009
2010 case SNDCTL_DSP_STEREO: /* set stereo or mono channel */
2011 #ifdef DEBUG
2012 printk("SNDCTL_DSP_STEREO\n");
2013 #endif
2014 if (dmabuf->enable & DAC_RUNNING) {
2015 stop_dac(state);
2016 }
2017 if (dmabuf->enable & ADC_RUNNING) {
2018 stop_adc(state);
2019 }
2020 return put_user(1, p);
2021
2022 case SNDCTL_DSP_GETBLKSIZE:
2023 if (file->f_mode & FMODE_WRITE) {
2024 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)))
2025 return val;
2026 }
2027 if (file->f_mode & FMODE_READ) {
2028 if (!dmabuf->ready && (val = prog_dmabuf(state, 1)))
2029 return val;
2030 }
2031 #ifdef DEBUG
2032 printk("SNDCTL_DSP_GETBLKSIZE %d\n", dmabuf->userfragsize);
2033 #endif
2034 return put_user(dmabuf->userfragsize, p);
2035
2036 case SNDCTL_DSP_GETFMTS: /* Returns a mask of supported sample format*/
2037 #ifdef DEBUG
2038 printk("SNDCTL_DSP_GETFMTS\n");
2039 #endif
2040 return put_user(AFMT_S16_LE, p);
2041
2042 case SNDCTL_DSP_SETFMT: /* Select sample format */
2043 #ifdef DEBUG
2044 printk("SNDCTL_DSP_SETFMT\n");
2045 #endif
2046 return put_user(AFMT_S16_LE, p);
2047
2048 case SNDCTL_DSP_CHANNELS:
2049 #ifdef DEBUG
2050 printk("SNDCTL_DSP_CHANNELS\n");
2051 #endif
2052 if (get_user(val, p))
2053 return -EFAULT;
2054
2055 if (val > 0) {
2056 if (dmabuf->enable & DAC_RUNNING) {
2057 stop_dac(state);
2058 }
2059 if (dmabuf->enable & ADC_RUNNING) {
2060 stop_adc(state);
2061 }
2062 } else {
2063 return put_user(state->card->channels, p);
2064 }
2065
2066 /* ICH and ICH0 only support 2 channels */
2067 if ( state->card->pci_id == PCI_DEVICE_ID_INTEL_82801AA_5
2068 || state->card->pci_id == PCI_DEVICE_ID_INTEL_82801AB_5)
2069 return put_user(2, p);
2070
2071 /* Multi-channel support was added with ICH2. Bits in */
2072 /* Global Status and Global Control register are now */
2073 /* used to indicate this. */
2074
2075 i_glob_cnt = I810_IOREADL(state->card, GLOB_CNT);
2076
2077 /* Current # of channels enabled */
2078 if ( i_glob_cnt & 0x0100000 )
2079 ret = 4;
2080 else if ( i_glob_cnt & 0x0200000 )
2081 ret = 6;
2082 else
2083 ret = 2;
2084
2085 switch ( val ) {
2086 case 2: /* 2 channels is always supported */
2087 I810_IOWRITEL(i_glob_cnt & 0xffcfffff,
2088 state->card, GLOB_CNT);
2089 /* Do we need to change mixer settings???? */
2090 break;
2091 case 4: /* Supported on some chipsets, better check first */
2092 if ( state->card->channels >= 4 ) {
2093 I810_IOWRITEL((i_glob_cnt & 0xffcfffff) | 0x100000,
2094 state->card, GLOB_CNT);
2095 /* Do we need to change mixer settings??? */
2096 } else {
2097 val = ret;
2098 }
2099 break;
2100 case 6: /* Supported on some chipsets, better check first */
2101 if ( state->card->channels >= 6 ) {
2102 I810_IOWRITEL((i_glob_cnt & 0xffcfffff) | 0x200000,
2103 state->card, GLOB_CNT);
2104 /* Do we need to change mixer settings??? */
2105 } else {
2106 val = ret;
2107 }
2108 break;
2109 default: /* nothing else is ever supported by the chipset */
2110 val = ret;
2111 break;
2112 }
2113
2114 return put_user(val, p);
2115
2116 case SNDCTL_DSP_POST: /* the user has sent all data and is notifying us */
2117 /* we update the swptr to the end of the last sg segment then return */
2118 #ifdef DEBUG
2119 printk("SNDCTL_DSP_POST\n");
2120 #endif
2121 if(!dmabuf->ready || (dmabuf->enable != DAC_RUNNING))
2122 return 0;
2123 if((dmabuf->swptr % dmabuf->fragsize) != 0) {
2124 val = dmabuf->fragsize - (dmabuf->swptr % dmabuf->fragsize);
2125 dmabuf->swptr += val;
2126 dmabuf->count += val;
2127 }
2128 return 0;
2129
2130 case SNDCTL_DSP_SUBDIVIDE:
2131 if (dmabuf->subdivision)
2132 return -EINVAL;
2133 if (get_user(val, p))
2134 return -EFAULT;
2135 if (val != 1 && val != 2 && val != 4)
2136 return -EINVAL;
2137 #ifdef DEBUG
2138 printk("SNDCTL_DSP_SUBDIVIDE %d\n", val);
2139 #endif
2140 dmabuf->subdivision = val;
2141 dmabuf->ready = 0;
2142 return 0;
2143
2144 case SNDCTL_DSP_SETFRAGMENT:
2145 if (get_user(val, p))
2146 return -EFAULT;
2147
2148 dmabuf->ossfragsize = 1<<(val & 0xffff);
2149 dmabuf->ossmaxfrags = (val >> 16) & 0xffff;
2150 if (!dmabuf->ossfragsize || !dmabuf->ossmaxfrags)
2151 return -EINVAL;
2152 /*
2153 * Bound the frag size into our allowed range of 256 - 4096
2154 */
2155 if (dmabuf->ossfragsize < 256)
2156 dmabuf->ossfragsize = 256;
2157 else if (dmabuf->ossfragsize > 4096)
2158 dmabuf->ossfragsize = 4096;
2159 /*
2160 * The numfrags could be something reasonable, or it could
2161 * be 0xffff meaning "Give me as much as possible". So,
2162 * we check the numfrags * fragsize doesn't exceed our
2163 * 64k buffer limit, nor is it less than our 8k minimum.
2164 * If it fails either one of these checks, then adjust the
2165 * number of fragments, not the size of them. It's OK if
2166 * our number of fragments doesn't equal 32 or anything
2167 * like our hardware based number now since we are using
2168 * a different frag count for the hardware. Before we get
2169 * into this though, bound the maxfrags to avoid overflow
2170 * issues. A reasonable bound would be 64k / 256 since our
2171 * maximum buffer size is 64k and our minimum frag size is
2172 * 256. On the other end, our minimum buffer size is 8k and
2173 * our maximum frag size is 4k, so the lower bound should
2174 * be 2.
2175 */
2176
2177 if(dmabuf->ossmaxfrags > 256)
2178 dmabuf->ossmaxfrags = 256;
2179 else if (dmabuf->ossmaxfrags < 2)
2180 dmabuf->ossmaxfrags = 2;
2181
2182 val = dmabuf->ossfragsize * dmabuf->ossmaxfrags;
2183 while (val < 8192) {
2184 val <<= 1;
2185 dmabuf->ossmaxfrags <<= 1;
2186 }
2187 while (val > 65536) {
2188 val >>= 1;
2189 dmabuf->ossmaxfrags >>= 1;
2190 }
2191 dmabuf->ready = 0;
2192 #ifdef DEBUG
2193 printk("SNDCTL_DSP_SETFRAGMENT 0x%x, %d, %d\n", val,
2194 dmabuf->ossfragsize, dmabuf->ossmaxfrags);
2195 #endif
2196
2197 return 0;
2198
2199 case SNDCTL_DSP_GETOSPACE:
2200 if (!(file->f_mode & FMODE_WRITE))
2201 return -EINVAL;
2202 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
2203 return val;
2204 spin_lock_irqsave(&state->card->lock, flags);
2205 i810_update_ptr(state);
2206 abinfo.fragsize = dmabuf->userfragsize;
2207 abinfo.fragstotal = dmabuf->userfrags;
2208 if (dmabuf->mapped)
2209 abinfo.bytes = dmabuf->dmasize;
2210 else
2211 abinfo.bytes = i810_get_free_write_space(state);
2212 abinfo.fragments = abinfo.bytes / dmabuf->userfragsize;
2213 spin_unlock_irqrestore(&state->card->lock, flags);
2214 #if defined(DEBUG) || defined(DEBUG_MMAP)
2215 printk("SNDCTL_DSP_GETOSPACE %d, %d, %d, %d\n", abinfo.bytes,
2216 abinfo.fragsize, abinfo.fragments, abinfo.fragstotal);
2217 #endif
2218 return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
2219
2220 case SNDCTL_DSP_GETOPTR:
2221 if (!(file->f_mode & FMODE_WRITE))
2222 return -EINVAL;
2223 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
2224 return val;
2225 spin_lock_irqsave(&state->card->lock, flags);
2226 val = i810_get_free_write_space(state);
2227 cinfo.bytes = dmabuf->total_bytes;
2228 cinfo.ptr = dmabuf->hwptr;
2229 cinfo.blocks = val/dmabuf->userfragsize;
2230 if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
2231 dmabuf->count += val;
2232 dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
2233 __i810_update_lvi(state, 0);
2234 }
2235 spin_unlock_irqrestore(&state->card->lock, flags);
2236 #if defined(DEBUG) || defined(DEBUG_MMAP)
2237 printk("SNDCTL_DSP_GETOPTR %d, %d, %d, %d\n", cinfo.bytes,
2238 cinfo.blocks, cinfo.ptr, dmabuf->count);
2239 #endif
2240 return copy_to_user(argp, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
2241
2242 case SNDCTL_DSP_GETISPACE:
2243 if (!(file->f_mode & FMODE_READ))
2244 return -EINVAL;
2245 if (!dmabuf->ready && (val = prog_dmabuf(state, 1)) != 0)
2246 return val;
2247 spin_lock_irqsave(&state->card->lock, flags);
2248 abinfo.bytes = i810_get_available_read_data(state);
2249 abinfo.fragsize = dmabuf->userfragsize;
2250 abinfo.fragstotal = dmabuf->userfrags;
2251 abinfo.fragments = abinfo.bytes / dmabuf->userfragsize;
2252 spin_unlock_irqrestore(&state->card->lock, flags);
2253 #if defined(DEBUG) || defined(DEBUG_MMAP)
2254 printk("SNDCTL_DSP_GETISPACE %d, %d, %d, %d\n", abinfo.bytes,
2255 abinfo.fragsize, abinfo.fragments, abinfo.fragstotal);
2256 #endif
2257 return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
2258
2259 case SNDCTL_DSP_GETIPTR:
2260 if (!(file->f_mode & FMODE_READ))
2261 return -EINVAL;
2262 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
2263 return val;
2264 spin_lock_irqsave(&state->card->lock, flags);
2265 val = i810_get_available_read_data(state);
2266 cinfo.bytes = dmabuf->total_bytes;
2267 cinfo.blocks = val/dmabuf->userfragsize;
2268 cinfo.ptr = dmabuf->hwptr;
2269 if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_INPUT)) {
2270 dmabuf->count -= val;
2271 dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
2272 __i810_update_lvi(state, 1);
2273 }
2274 spin_unlock_irqrestore(&state->card->lock, flags);
2275 #if defined(DEBUG) || defined(DEBUG_MMAP)
2276 printk("SNDCTL_DSP_GETIPTR %d, %d, %d, %d\n", cinfo.bytes,
2277 cinfo.blocks, cinfo.ptr, dmabuf->count);
2278 #endif
2279 return copy_to_user(argp, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
2280
2281 case SNDCTL_DSP_NONBLOCK:
2282 #ifdef DEBUG
2283 printk("SNDCTL_DSP_NONBLOCK\n");
2284 #endif
2285 file->f_flags |= O_NONBLOCK;
2286 return 0;
2287
2288 case SNDCTL_DSP_GETCAPS:
2289 #ifdef DEBUG
2290 printk("SNDCTL_DSP_GETCAPS\n");
2291 #endif
2292 return put_user(DSP_CAP_REALTIME|DSP_CAP_TRIGGER|DSP_CAP_MMAP|DSP_CAP_BIND,
2293 p);
2294
2295 case SNDCTL_DSP_GETTRIGGER:
2296 val = 0;
2297 #ifdef DEBUG
2298 printk("SNDCTL_DSP_GETTRIGGER 0x%x\n", dmabuf->trigger);
2299 #endif
2300 return put_user(dmabuf->trigger, p);
2301
2302 case SNDCTL_DSP_SETTRIGGER:
2303 if (get_user(val, p))
2304 return -EFAULT;
2305 #if defined(DEBUG) || defined(DEBUG_MMAP)
2306 printk("SNDCTL_DSP_SETTRIGGER 0x%x\n", val);
2307 #endif
2308 /* silently ignore invalid PCM_ENABLE_xxx bits,
2309 * like the other drivers do
2310 */
2311 if (!(file->f_mode & FMODE_READ ))
2312 val &= ~PCM_ENABLE_INPUT;
2313 if (!(file->f_mode & FMODE_WRITE ))
2314 val &= ~PCM_ENABLE_OUTPUT;
2315 if((file->f_mode & FMODE_READ) && !(val & PCM_ENABLE_INPUT) && dmabuf->enable == ADC_RUNNING) {
2316 stop_adc(state);
2317 }
2318 if((file->f_mode & FMODE_WRITE) && !(val & PCM_ENABLE_OUTPUT) && dmabuf->enable == DAC_RUNNING) {
2319 stop_dac(state);
2320 }
2321 dmabuf->trigger = val;
2322 if((val & PCM_ENABLE_OUTPUT) && !(dmabuf->enable & DAC_RUNNING)) {
2323 if (!dmabuf->write_channel) {
2324 dmabuf->ready = 0;
2325 dmabuf->write_channel = state->card->alloc_pcm_channel(state->card);
2326 if (!dmabuf->write_channel)
2327 return -EBUSY;
2328 }
2329 if (!dmabuf->ready && (ret = prog_dmabuf(state, 0)))
2330 return ret;
2331 if (dmabuf->mapped) {
2332 spin_lock_irqsave(&state->card->lock, flags);
2333 i810_update_ptr(state);
2334 dmabuf->count = 0;
2335 dmabuf->swptr = dmabuf->hwptr;
2336 dmabuf->count = i810_get_free_write_space(state);
2337 dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize;
2338 spin_unlock_irqrestore(&state->card->lock, flags);
2339 }
2340 i810_update_lvi(state, 0);
2341 start_dac(state);
2342 }
2343 if((val & PCM_ENABLE_INPUT) && !(dmabuf->enable & ADC_RUNNING)) {
2344 if (!dmabuf->read_channel) {
2345 dmabuf->ready = 0;
2346 dmabuf->read_channel = state->card->alloc_rec_pcm_channel(state->card);
2347 if (!dmabuf->read_channel)
2348 return -EBUSY;
2349 }
2350 if (!dmabuf->ready && (ret = prog_dmabuf(state, 1)))
2351 return ret;
2352 if (dmabuf->mapped) {
2353 spin_lock_irqsave(&state->card->lock, flags);
2354 i810_update_ptr(state);
2355 dmabuf->swptr = dmabuf->hwptr;
2356 dmabuf->count = 0;
2357 spin_unlock_irqrestore(&state->card->lock, flags);
2358 }
2359 i810_update_lvi(state, 1);
2360 start_adc(state);
2361 }
2362 return 0;
2363
2364 case SNDCTL_DSP_SETDUPLEX:
2365 #ifdef DEBUG
2366 printk("SNDCTL_DSP_SETDUPLEX\n");
2367 #endif
2368 return -EINVAL;
2369
2370 case SNDCTL_DSP_GETODELAY:
2371 if (!(file->f_mode & FMODE_WRITE))
2372 return -EINVAL;
2373 spin_lock_irqsave(&state->card->lock, flags);
2374 i810_update_ptr(state);
2375 val = dmabuf->count;
2376 spin_unlock_irqrestore(&state->card->lock, flags);
2377 #ifdef DEBUG
2378 printk("SNDCTL_DSP_GETODELAY %d\n", dmabuf->count);
2379 #endif
2380 return put_user(val, p);
2381
2382 case SOUND_PCM_READ_RATE:
2383 #ifdef DEBUG
2384 printk("SOUND_PCM_READ_RATE %d\n", dmabuf->rate);
2385 #endif
2386 return put_user(dmabuf->rate, p);
2387
2388 case SOUND_PCM_READ_CHANNELS:
2389 #ifdef DEBUG
2390 printk("SOUND_PCM_READ_CHANNELS\n");
2391 #endif
2392 return put_user(2, p);
2393
2394 case SOUND_PCM_READ_BITS:
2395 #ifdef DEBUG
2396 printk("SOUND_PCM_READ_BITS\n");
2397 #endif
2398 return put_user(AFMT_S16_LE, p);
2399
2400 case SNDCTL_DSP_SETSPDIF: /* Set S/PDIF Control register */
2401 #ifdef DEBUG
2402 printk("SNDCTL_DSP_SETSPDIF\n");
2403 #endif
2404 if (get_user(val, p))
2405 return -EFAULT;
2406
2407 /* Check to make sure the codec supports S/PDIF transmitter */
2408
2409 if((state->card->ac97_features & 4)) {
2410 /* mask out the transmitter speed bits so the user can't set them */
2411 val &= ~0x3000;
2412
2413 /* Add the current transmitter speed bits to the passed value */
2414 ret = i810_ac97_get(codec, AC97_SPDIF_CONTROL);
2415 val |= (ret & 0x3000);
2416
2417 i810_ac97_set(codec, AC97_SPDIF_CONTROL, val);
2418 if(i810_ac97_get(codec, AC97_SPDIF_CONTROL) != val ) {
2419 printk(KERN_ERR "i810_audio: Unable to set S/PDIF configuration to 0x%04x.\n", val);
2420 return -EFAULT;
2421 }
2422 }
2423 #ifdef DEBUG
2424 else
2425 printk(KERN_WARNING "i810_audio: S/PDIF transmitter not avalible.\n");
2426 #endif
2427 return put_user(val, p);
2428
2429 case SNDCTL_DSP_GETSPDIF: /* Get S/PDIF Control register */
2430 #ifdef DEBUG
2431 printk("SNDCTL_DSP_GETSPDIF\n");
2432 #endif
2433 if (get_user(val, p))
2434 return -EFAULT;
2435
2436 /* Check to make sure the codec supports S/PDIF transmitter */
2437
2438 if(!(state->card->ac97_features & 4)) {
2439 #ifdef DEBUG
2440 printk(KERN_WARNING "i810_audio: S/PDIF transmitter not avalible.\n");
2441 #endif
2442 val = 0;
2443 } else {
2444 val = i810_ac97_get(codec, AC97_SPDIF_CONTROL);
2445 }
2446 //return put_user((val & 0xcfff), p);
2447 return put_user(val, p);
2448
2449 case SNDCTL_DSP_GETCHANNELMASK:
2450 #ifdef DEBUG
2451 printk("SNDCTL_DSP_GETCHANNELMASK\n");
2452 #endif
2453 if (get_user(val, p))
2454 return -EFAULT;
2455
2456 /* Based on AC'97 DAC support, not ICH hardware */
2457 val = DSP_BIND_FRONT;
2458 if ( state->card->ac97_features & 0x0004 )
2459 val |= DSP_BIND_SPDIF;
2460
2461 if ( state->card->ac97_features & 0x0080 )
2462 val |= DSP_BIND_SURR;
2463 if ( state->card->ac97_features & 0x0140 )
2464 val |= DSP_BIND_CENTER_LFE;
2465
2466 return put_user(val, p);
2467
2468 case SNDCTL_DSP_BIND_CHANNEL:
2469 #ifdef DEBUG
2470 printk("SNDCTL_DSP_BIND_CHANNEL\n");
2471 #endif
2472 if (get_user(val, p))
2473 return -EFAULT;
2474 if ( val == DSP_BIND_QUERY ) {
2475 val = DSP_BIND_FRONT; /* Always report this as being enabled */
2476 if ( state->card->ac97_status & SPDIF_ON )
2477 val |= DSP_BIND_SPDIF;
2478 else {
2479 if ( state->card->ac97_status & SURR_ON )
2480 val |= DSP_BIND_SURR;
2481 if ( state->card->ac97_status & CENTER_LFE_ON )
2482 val |= DSP_BIND_CENTER_LFE;
2483 }
2484 } else { /* Not a query, set it */
2485 if (!(file->f_mode & FMODE_WRITE))
2486 return -EINVAL;
2487 if ( dmabuf->enable == DAC_RUNNING ) {
2488 stop_dac(state);
2489 }
2490 if ( val & DSP_BIND_SPDIF ) { /* Turn on SPDIF */
2491 /* Ok, this should probably define what slots
2492 * to use. For now, we'll only set it to the
2493 * defaults:
2494 *
2495 * non multichannel codec maps to slots 3&4
2496 * 2 channel codec maps to slots 7&8
2497 * 4 channel codec maps to slots 6&9
2498 * 6 channel codec maps to slots 10&11
2499 *
2500 * there should be some way for the app to
2501 * select the slot assignment.
2502 */
2503
2504 i810_set_spdif_output ( state, AC97_EA_SPSA_3_4, dmabuf->rate );
2505 if ( !(state->card->ac97_status & SPDIF_ON) )
2506 val &= ~DSP_BIND_SPDIF;
2507 } else {
2508 int mask;
2509 int channels;
2510
2511 /* Turn off S/PDIF if it was on */
2512 if ( state->card->ac97_status & SPDIF_ON )
2513 i810_set_spdif_output ( state, -1, 0 );
2514
2515 mask = val & (DSP_BIND_FRONT | DSP_BIND_SURR | DSP_BIND_CENTER_LFE);
2516 switch (mask) {
2517 case DSP_BIND_FRONT:
2518 channels = 2;
2519 break;
2520 case DSP_BIND_FRONT|DSP_BIND_SURR:
2521 channels = 4;
2522 break;
2523 case DSP_BIND_FRONT|DSP_BIND_SURR|DSP_BIND_CENTER_LFE:
2524 channels = 6;
2525 break;
2526 default:
2527 val = DSP_BIND_FRONT;
2528 channels = 2;
2529 break;
2530 }
2531 i810_set_dac_channels ( state, channels );
2532
2533 /* check that they really got turned on */
2534 if (!(state->card->ac97_status & SURR_ON))
2535 val &= ~DSP_BIND_SURR;
2536 if (!(state->card->ac97_status & CENTER_LFE_ON))
2537 val &= ~DSP_BIND_CENTER_LFE;
2538 }
2539 }
2540 return put_user(val, p);
2541
2542 case SNDCTL_DSP_MAPINBUF:
2543 case SNDCTL_DSP_MAPOUTBUF:
2544 case SNDCTL_DSP_SETSYNCRO:
2545 case SOUND_PCM_WRITE_FILTER:
2546 case SOUND_PCM_READ_FILTER:
2547 #ifdef DEBUG
2548 printk("SNDCTL_* -EINVAL\n");
2549 #endif
2550 return -EINVAL;
2551 }
2552 return -EINVAL;
2553 }
2554
2555 static int i810_open(struct inode *inode, struct file *file)
2556 {
2557 int i = 0;
2558 struct i810_card *card = devs;
2559 struct i810_state *state = NULL;
2560 struct dmabuf *dmabuf = NULL;
2561
2562 /* find an avaiable virtual channel (instance of /dev/dsp) */
2563 while (card != NULL) {
2564 /*
2565 * If we are initializing and then fail, card could go
2566 * away unuexpectedly while we are in the for() loop.
2567 * So, check for card on each iteration before we check
2568 * for card->initializing to avoid a possible oops.
2569 * This usually only matters for times when the driver is
2570 * autoloaded by kmod.
2571 */
2572 for (i = 0; i < 50 && card && card->initializing; i++) {
2573 set_current_state(TASK_UNINTERRUPTIBLE);
2574 schedule_timeout(HZ/20);
2575 }
2576 for (i = 0; i < NR_HW_CH && card && !card->initializing; i++) {
2577 if (card->states[i] == NULL) {
2578 state = card->states[i] = (struct i810_state *)
2579 kmalloc(sizeof(struct i810_state), GFP_KERNEL);
2580 if (state == NULL)
2581 return -ENOMEM;
2582 memset(state, 0, sizeof(struct i810_state));
2583 dmabuf = &state->dmabuf;
2584 goto found_virt;
2585 }
2586 }
2587 card = card->next;
2588 }
2589 /* no more virtual channel avaiable */
2590 if (!state)
2591 return -ENODEV;
2592
2593 found_virt:
2594 /* initialize the virtual channel */
2595 state->virt = i;
2596 state->card = card;
2597 state->magic = I810_STATE_MAGIC;
2598 init_waitqueue_head(&dmabuf->wait);
2599 init_MUTEX(&state->open_sem);
2600 file->private_data = state;
2601 dmabuf->trigger = 0;
2602
2603 /* allocate hardware channels */
2604 if(file->f_mode & FMODE_READ) {
2605 if((dmabuf->read_channel = card->alloc_rec_pcm_channel(card)) == NULL) {
2606 kfree (card->states[i]);
2607 card->states[i] = NULL;
2608 return -EBUSY;
2609 }
2610 dmabuf->trigger |= PCM_ENABLE_INPUT;
2611 i810_set_adc_rate(state, 8000);
2612 }
2613 if(file->f_mode & FMODE_WRITE) {
2614 if((dmabuf->write_channel = card->alloc_pcm_channel(card)) == NULL) {
2615 /* make sure we free the record channel allocated above */
2616 if(file->f_mode & FMODE_READ)
2617 card->free_pcm_channel(card,dmabuf->read_channel->num);
2618 kfree (card->states[i]);
2619 card->states[i] = NULL;
2620 return -EBUSY;
2621 }
2622 /* Initialize to 8kHz? What if we don't support 8kHz? */
2623 /* Let's change this to check for S/PDIF stuff */
2624
2625 dmabuf->trigger |= PCM_ENABLE_OUTPUT;
2626 if ( spdif_locked ) {
2627 i810_set_dac_rate(state, spdif_locked);
2628 i810_set_spdif_output(state, AC97_EA_SPSA_3_4, spdif_locked);
2629 } else {
2630 i810_set_dac_rate(state, 8000);
2631 /* Put the ACLink in 2 channel mode by default */
2632 i = I810_IOREADL(card, GLOB_CNT);
2633 I810_IOWRITEL(i & 0xffcfffff, card, GLOB_CNT);
2634 }
2635 }
2636
2637 /* set default sample format. According to OSS Programmer's Guide /dev/dsp
2638 should be default to unsigned 8-bits, mono, with sample rate 8kHz and
2639 /dev/dspW will accept 16-bits sample, but we don't support those so we
2640 set it immediately to stereo and 16bit, which is all we do support */
2641 dmabuf->fmt |= I810_FMT_16BIT | I810_FMT_STEREO;
2642 dmabuf->ossfragsize = 0;
2643 dmabuf->ossmaxfrags = 0;
2644 dmabuf->subdivision = 0;
2645
2646 state->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
2647
2648 return nonseekable_open(inode, file);
2649 }
2650
2651 static int i810_release(struct inode *inode, struct file *file)
2652 {
2653 struct i810_state *state = (struct i810_state *)file->private_data;
2654 struct i810_card *card = state->card;
2655 struct dmabuf *dmabuf = &state->dmabuf;
2656 unsigned long flags;
2657
2658 lock_kernel();
2659
2660 /* stop DMA state machine and free DMA buffers/channels */
2661 if(dmabuf->trigger & PCM_ENABLE_OUTPUT) {
2662 drain_dac(state, 0);
2663 }
2664 if(dmabuf->trigger & PCM_ENABLE_INPUT) {
2665 stop_adc(state);
2666 }
2667 spin_lock_irqsave(&card->lock, flags);
2668 dealloc_dmabuf(state);
2669 if (file->f_mode & FMODE_WRITE) {
2670 state->card->free_pcm_channel(state->card, dmabuf->write_channel->num);
2671 }
2672 if (file->f_mode & FMODE_READ) {
2673 state->card->free_pcm_channel(state->card, dmabuf->read_channel->num);
2674 }
2675
2676 state->card->states[state->virt] = NULL;
2677 kfree(state);
2678 spin_unlock_irqrestore(&card->lock, flags);
2679 unlock_kernel();
2680
2681 return 0;
2682 }
2683
2684 static /*const*/ struct file_operations i810_audio_fops = {
2685 .owner = THIS_MODULE,
2686 .llseek = no_llseek,
2687 .read = i810_read,
2688 .write = i810_write,
2689 .poll = i810_poll,
2690 .ioctl = i810_ioctl,
2691 .mmap = i810_mmap,
2692 .open = i810_open,
2693 .release = i810_release,
2694 };
2695
2696 /* Write AC97 codec registers */
2697
2698 static u16 i810_ac97_get_mmio(struct ac97_codec *dev, u8 reg)
2699 {
2700 struct i810_card *card = dev->private_data;
2701 int count = 100;
2702 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2703
2704 while(count-- && (readb(card->iobase_mmio + CAS) & 1))
2705 udelay(1);
2706
2707 #ifdef DEBUG_MMIO
2708 {
2709 u16 ans = readw(card->ac97base_mmio + reg_set);
2710 printk(KERN_DEBUG "i810_audio: ac97_get_mmio(%d) -> 0x%04X\n", ((int) reg_set) & 0xffff, (u32) ans);
2711 return ans;
2712 }
2713 #else
2714 return readw(card->ac97base_mmio + reg_set);
2715 #endif
2716 }
2717
2718 static u16 i810_ac97_get_io(struct ac97_codec *dev, u8 reg)
2719 {
2720 struct i810_card *card = dev->private_data;
2721 int count = 100;
2722 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2723
2724 while(count-- && (I810_IOREADB(card, CAS) & 1))
2725 udelay(1);
2726
2727 return inw(card->ac97base + reg_set);
2728 }
2729
2730 static void i810_ac97_set_mmio(struct ac97_codec *dev, u8 reg, u16 data)
2731 {
2732 struct i810_card *card = dev->private_data;
2733 int count = 100;
2734 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2735
2736 while(count-- && (readb(card->iobase_mmio + CAS) & 1))
2737 udelay(1);
2738
2739 writew(data, card->ac97base_mmio + reg_set);
2740
2741 #ifdef DEBUG_MMIO
2742 printk(KERN_DEBUG "i810_audio: ac97_set_mmio(0x%04X, %d)\n", (u32) data, ((int) reg_set) & 0xffff);
2743 #endif
2744 }
2745
2746 static void i810_ac97_set_io(struct ac97_codec *dev, u8 reg, u16 data)
2747 {
2748 struct i810_card *card = dev->private_data;
2749 int count = 100;
2750 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2751
2752 while(count-- && (I810_IOREADB(card, CAS) & 1))
2753 udelay(1);
2754
2755 outw(data, card->ac97base + reg_set);
2756 }
2757
2758 static u16 i810_ac97_get(struct ac97_codec *dev, u8 reg)
2759 {
2760 struct i810_card *card = dev->private_data;
2761 u16 ret;
2762
2763 spin_lock(&card->ac97_lock);
2764 if (card->use_mmio) {
2765 ret = i810_ac97_get_mmio(dev, reg);
2766 }
2767 else {
2768 ret = i810_ac97_get_io(dev, reg);
2769 }
2770 spin_unlock(&card->ac97_lock);
2771
2772 return ret;
2773 }
2774
2775 static void i810_ac97_set(struct ac97_codec *dev, u8 reg, u16 data)
2776 {
2777 struct i810_card *card = dev->private_data;
2778
2779 spin_lock(&card->ac97_lock);
2780 if (card->use_mmio) {
2781 i810_ac97_set_mmio(dev, reg, data);
2782 }
2783 else {
2784 i810_ac97_set_io(dev, reg, data);
2785 }
2786 spin_unlock(&card->ac97_lock);
2787 }
2788
2789
2790 /* OSS /dev/mixer file operation methods */
2791
2792 static int i810_open_mixdev(struct inode *inode, struct file *file)
2793 {
2794 int i;
2795 int minor = iminor(inode);
2796 struct i810_card *card = devs;
2797
2798 for (card = devs; card != NULL; card = card->next) {
2799 /*
2800 * If we are initializing and then fail, card could go
2801 * away unuexpectedly while we are in the for() loop.
2802 * So, check for card on each iteration before we check
2803 * for card->initializing to avoid a possible oops.
2804 * This usually only matters for times when the driver is
2805 * autoloaded by kmod.
2806 */
2807 for (i = 0; i < 50 && card && card->initializing; i++) {
2808 set_current_state(TASK_UNINTERRUPTIBLE);
2809 schedule_timeout(HZ/20);
2810 }
2811 for (i = 0; i < NR_AC97 && card && !card->initializing; i++)
2812 if (card->ac97_codec[i] != NULL &&
2813 card->ac97_codec[i]->dev_mixer == minor) {
2814 file->private_data = card->ac97_codec[i];
2815 return nonseekable_open(inode, file);
2816 }
2817 }
2818 return -ENODEV;
2819 }
2820
2821 static int i810_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd,
2822 unsigned long arg)
2823 {
2824 struct ac97_codec *codec = (struct ac97_codec *)file->private_data;
2825
2826 return codec->mixer_ioctl(codec, cmd, arg);
2827 }
2828
2829 static /*const*/ struct file_operations i810_mixer_fops = {
2830 .owner = THIS_MODULE,
2831 .llseek = no_llseek,
2832 .ioctl = i810_ioctl_mixdev,
2833 .open = i810_open_mixdev,
2834 };
2835
2836 /* AC97 codec initialisation. These small functions exist so we don't
2837 duplicate code between module init and apm resume */
2838
2839 static inline int i810_ac97_exists(struct i810_card *card, int ac97_number)
2840 {
2841 u32 reg = I810_IOREADL(card, GLOB_STA);
2842 switch (ac97_number) {
2843 case 0:
2844 return reg & (1<<8);
2845 case 1:
2846 return reg & (1<<9);
2847 case 2:
2848 return reg & (1<<28);
2849 }
2850 return 0;
2851 }
2852
2853 static inline int i810_ac97_enable_variable_rate(struct ac97_codec *codec)
2854 {
2855 i810_ac97_set(codec, AC97_EXTENDED_STATUS, 9);
2856 i810_ac97_set(codec,AC97_EXTENDED_STATUS,
2857 i810_ac97_get(codec, AC97_EXTENDED_STATUS)|0xE800);
2858
2859 return (i810_ac97_get(codec, AC97_EXTENDED_STATUS)&1);
2860 }
2861
2862
2863 static int i810_ac97_probe_and_powerup(struct i810_card *card,struct ac97_codec *codec)
2864 {
2865 /* Returns 0 on failure */
2866 int i;
2867
2868 if (ac97_probe_codec(codec) == 0) return 0;
2869
2870 /* power it all up */
2871 i810_ac97_set(codec, AC97_POWER_CONTROL,
2872 i810_ac97_get(codec, AC97_POWER_CONTROL) & ~0x7f00);
2873
2874 /* wait for analog ready */
2875 for (i=100; i && ((i810_ac97_get(codec, AC97_POWER_CONTROL) & 0xf) != 0xf); i--)
2876 {
2877 set_current_state(TASK_UNINTERRUPTIBLE);
2878 schedule_timeout(HZ/20);
2879 }
2880 return i;
2881 }
2882
2883 static int is_new_ich(u16 pci_id)
2884 {
2885 switch (pci_id) {
2886 case PCI_DEVICE_ID_INTEL_82801DB_5:
2887 case PCI_DEVICE_ID_INTEL_82801EB_5:
2888 case PCI_DEVICE_ID_INTEL_ESB_5:
2889 case PCI_DEVICE_ID_INTEL_ICH6_18:
2890 return 1;
2891 default:
2892 break;
2893 }
2894
2895 return 0;
2896 }
2897
2898 static inline int ich_use_mmio(struct i810_card *card)
2899 {
2900 return is_new_ich(card->pci_id) && card->use_mmio;
2901 }
2902
2903 /**
2904 * i810_ac97_power_up_bus - bring up AC97 link
2905 * @card : ICH audio device to power up
2906 *
2907 * Bring up the ACLink AC97 codec bus
2908 */
2909
2910 static int i810_ac97_power_up_bus(struct i810_card *card)
2911 {
2912 u32 reg = I810_IOREADL(card, GLOB_CNT);
2913 int i;
2914 int primary_codec_id = 0;
2915
2916 if((reg&2)==0) /* Cold required */
2917 reg|=2;
2918 else
2919 reg|=4; /* Warm */
2920
2921 reg&=~8; /* ACLink on */
2922
2923 /* At this point we deassert AC_RESET # */
2924 I810_IOWRITEL(reg , card, GLOB_CNT);
2925
2926 /* We must now allow time for the Codec initialisation.
2927 600mS is the specified time */
2928
2929 for(i=0;i<10;i++)
2930 {
2931 if((I810_IOREADL(card, GLOB_CNT)&4)==0)
2932 break;
2933
2934 set_current_state(TASK_UNINTERRUPTIBLE);
2935 schedule_timeout(HZ/20);
2936 }
2937 if(i==10)
2938 {
2939 printk(KERN_ERR "i810_audio: AC'97 reset failed.\n");
2940 return 0;
2941 }
2942
2943 set_current_state(TASK_UNINTERRUPTIBLE);
2944 schedule_timeout(HZ/2);
2945
2946 /*
2947 * See if the primary codec comes ready. This must happen
2948 * before we start doing DMA stuff
2949 */
2950 /* see i810_ac97_init for the next 10 lines (jsaw) */
2951 if (card->use_mmio)
2952 readw(card->ac97base_mmio);
2953 else
2954 inw(card->ac97base);
2955 if (ich_use_mmio(card)) {
2956 primary_codec_id = (int) readl(card->iobase_mmio + SDM) & 0x3;
2957 printk(KERN_INFO "i810_audio: Primary codec has ID %d\n",
2958 primary_codec_id);
2959 }
2960
2961 if(! i810_ac97_exists(card, primary_codec_id))
2962 {
2963 printk(KERN_INFO "i810_audio: Codec not ready.. wait.. ");
2964 set_current_state(TASK_UNINTERRUPTIBLE);
2965 schedule_timeout(HZ); /* actually 600mS by the spec */
2966
2967 if(i810_ac97_exists(card, primary_codec_id))
2968 printk("OK\n");
2969 else
2970 printk("no response.\n");
2971 }
2972 if (card->use_mmio)
2973 readw(card->ac97base_mmio);
2974 else
2975 inw(card->ac97base);
2976 return 1;
2977 }
2978
2979 static int __devinit i810_ac97_init(struct i810_card *card)
2980 {
2981 int num_ac97 = 0;
2982 int ac97_id;
2983 int total_channels = 0;
2984 int nr_ac97_max = card_cap[card->pci_id_internal].nr_ac97;
2985 struct ac97_codec *codec;
2986 u16 eid;
2987 u32 reg;
2988
2989 if(!i810_ac97_power_up_bus(card)) return 0;
2990
2991 /* Number of channels supported */
2992 /* What about the codec? Just because the ICH supports */
2993 /* multiple channels doesn't mean the codec does. */
2994 /* we'll have to modify this in the codec section below */
2995 /* to reflect what the codec has. */
2996 /* ICH and ICH0 only support 2 channels so don't bother */
2997 /* to check.... */
2998
2999 card->channels = 2;
3000 reg = I810_IOREADL(card, GLOB_STA);
3001 if ( reg & 0x0200000 )
3002 card->channels = 6;
3003 else if ( reg & 0x0100000 )
3004 card->channels = 4;
3005 printk(KERN_INFO "i810_audio: Audio Controller supports %d channels.\n", card->channels);
3006 printk(KERN_INFO "i810_audio: Defaulting to base 2 channel mode.\n");
3007 reg = I810_IOREADL(card, GLOB_CNT);
3008 I810_IOWRITEL(reg & 0xffcfffff, card, GLOB_CNT);
3009
3010 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++)
3011 card->ac97_codec[num_ac97] = NULL;
3012
3013 /*@FIXME I don't know, if I'm playing to safe here... (jsaw) */
3014 if ((nr_ac97_max > 2) && !card->use_mmio) nr_ac97_max = 2;
3015
3016 for (num_ac97 = 0; num_ac97 < nr_ac97_max; num_ac97++) {
3017 /* codec reset */
3018 printk(KERN_INFO "i810_audio: Resetting connection %d\n", num_ac97);
3019 if (card->use_mmio)
3020 readw(card->ac97base_mmio + 0x80*num_ac97);
3021 else
3022 inw(card->ac97base + 0x80*num_ac97);
3023
3024 /* If we have the SDATA_IN Map Register, as on ICH4, we
3025 do not loop thru all possible codec IDs but thru all
3026 possible IO channels. Bit 0:1 of SDM then holds the
3027 last codec ID spoken to.
3028 */
3029 if (ich_use_mmio(card)) {
3030 ac97_id = (int) readl(card->iobase_mmio + SDM) & 0x3;
3031 printk(KERN_INFO "i810_audio: Connection %d with codec id %d\n",
3032 num_ac97, ac97_id);
3033 }
3034 else {
3035 ac97_id = num_ac97;
3036 }
3037
3038 /* The ICH programmer's reference says you should */
3039 /* check the ready status before probing. So we chk */
3040 /* What do we do if it's not ready? Wait and try */
3041 /* again, or abort? */
3042 if (!i810_ac97_exists(card, ac97_id)) {
3043 if(num_ac97 == 0)
3044 printk(KERN_ERR "i810_audio: Primary codec not ready.\n");
3045 }
3046
3047 if ((codec = ac97_alloc_codec()) == NULL)
3048 return -ENOMEM;
3049
3050 /* initialize some basic codec information, other fields will be filled
3051 in ac97_probe_codec */
3052 codec->private_data = card;
3053 codec->id = ac97_id;
3054 card->ac97_id_map[ac97_id] = num_ac97 * 0x80;
3055
3056 if (card->use_mmio) {
3057 codec->codec_read = i810_ac97_get_mmio;
3058 codec->codec_write = i810_ac97_set_mmio;
3059 }
3060 else {
3061 codec->codec_read = i810_ac97_get_io;
3062 codec->codec_write = i810_ac97_set_io;
3063 }
3064
3065 if(!i810_ac97_probe_and_powerup(card,codec)) {
3066 printk(KERN_ERR "i810_audio: timed out waiting for codec %d analog ready.\n", ac97_id);
3067 ac97_release_codec(codec);
3068 break; /* it didn't work */
3069 }
3070 /* Store state information about S/PDIF transmitter */
3071 card->ac97_status = 0;
3072
3073 /* Don't attempt to get eid until powerup is complete */
3074 eid = i810_ac97_get(codec, AC97_EXTENDED_ID);
3075
3076 if(eid==0xFFFF)
3077 {
3078 printk(KERN_WARNING "i810_audio: no codec attached ?\n");
3079 ac97_release_codec(codec);
3080 break;
3081 }
3082
3083 /* Check for an AC97 1.0 soft modem (ID1) */
3084
3085 if(codec->modem)
3086 {
3087 printk(KERN_WARNING "i810_audio: codec %d is a softmodem - skipping.\n", ac97_id);
3088 ac97_release_codec(codec);
3089 continue;
3090 }
3091
3092 card->ac97_features = eid;
3093
3094 /* Now check the codec for useful features to make up for
3095 the dumbness of the 810 hardware engine */
3096
3097 if(!(eid&0x0001))
3098 printk(KERN_WARNING "i810_audio: only 48Khz playback available.\n");
3099 else
3100 {
3101 if(!i810_ac97_enable_variable_rate(codec)) {
3102 printk(KERN_WARNING "i810_audio: Codec refused to allow VRA, using 48Khz only.\n");
3103 card->ac97_features&=~1;
3104 }
3105 }
3106
3107 /* Turn on the amplifier */
3108
3109 codec->codec_write(codec, AC97_POWER_CONTROL,
3110 codec->codec_read(codec, AC97_POWER_CONTROL) & ~0x8000);
3111
3112 /* Determine how many channels the codec(s) support */
3113 /* - The primary codec always supports 2 */
3114 /* - If the codec supports AMAP, surround DACs will */
3115 /* automaticlly get assigned to slots. */
3116 /* * Check for surround DACs and increment if */
3117 /* found. */
3118 /* - Else check if the codec is revision 2.2 */
3119 /* * If surround DACs exist, assign them to slots */
3120 /* and increment channel count. */
3121
3122 /* All of this only applies to ICH2 and above. ICH */
3123 /* and ICH0 only support 2 channels. ICH2 will only */
3124 /* support multiple codecs in a "split audio" config. */
3125 /* as described above. */
3126
3127 /* TODO: Remove all the debugging messages! */
3128
3129 if((eid & 0xc000) == 0) /* primary codec */
3130 total_channels += 2;
3131
3132 if(eid & 0x200) { /* GOOD, AMAP support */
3133 if (eid & 0x0080) /* L/R Surround channels */
3134 total_channels += 2;
3135 if (eid & 0x0140) /* LFE and Center channels */
3136 total_channels += 2;
3137 printk("i810_audio: AC'97 codec %d supports AMAP, total channels = %d\n", ac97_id, total_channels);
3138 } else if (eid & 0x0400) { /* this only works on 2.2 compliant codecs */
3139 eid &= 0xffcf;
3140 if((eid & 0xc000) != 0) {
3141 switch ( total_channels ) {
3142 case 2:
3143 /* Set dsa1, dsa0 to 01 */
3144 eid |= 0x0010;
3145 break;
3146 case 4:
3147 /* Set dsa1, dsa0 to 10 */
3148 eid |= 0x0020;
3149 break;
3150 case 6:
3151 /* Set dsa1, dsa0 to 11 */
3152 eid |= 0x0030;
3153 break;
3154 }
3155 total_channels += 2;
3156 }
3157 i810_ac97_set(codec, AC97_EXTENDED_ID, eid);
3158 eid = i810_ac97_get(codec, AC97_EXTENDED_ID);
3159 printk("i810_audio: AC'97 codec %d, new EID value = 0x%04x\n", ac97_id, eid);
3160 if (eid & 0x0080) /* L/R Surround channels */
3161 total_channels += 2;
3162 if (eid & 0x0140) /* LFE and Center channels */
3163 total_channels += 2;
3164 printk("i810_audio: AC'97 codec %d, DAC map configured, total channels = %d\n", ac97_id, total_channels);
3165 } else {
3166 printk("i810_audio: AC'97 codec %d Unable to map surround DAC's (or DAC's not present), total channels = %d\n", ac97_id, total_channels);
3167 }
3168
3169 if ((codec->dev_mixer = register_sound_mixer(&i810_mixer_fops, -1)) < 0) {
3170 printk(KERN_ERR "i810_audio: couldn't register mixer!\n");
3171 ac97_release_codec(codec);
3172 break;
3173 }
3174
3175 card->ac97_codec[num_ac97] = codec;
3176 }
3177
3178 /* tune up the primary codec */
3179 ac97_tune_hardware(card->pci_dev, ac97_quirks, ac97_quirk);
3180
3181 /* pick the minimum of channels supported by ICHx or codec(s) */
3182 card->channels = (card->channels > total_channels)?total_channels:card->channels;
3183
3184 return num_ac97;
3185 }
3186
3187 static void __devinit i810_configure_clocking (void)
3188 {
3189 struct i810_card *card;
3190 struct i810_state *state;
3191 struct dmabuf *dmabuf;
3192 unsigned int i, offset, new_offset;
3193 unsigned long flags;
3194
3195 card = devs;
3196 /* We could try to set the clocking for multiple cards, but can you even have
3197 * more than one i810 in a machine? Besides, clocking is global, so unless
3198 * someone actually thinks more than one i810 in a machine is possible and
3199 * decides to rewrite that little bit, setting the rate for more than one card
3200 * is a waste of time.
3201 */
3202 if(card != NULL) {
3203 state = card->states[0] = (struct i810_state *)
3204 kmalloc(sizeof(struct i810_state), GFP_KERNEL);
3205 if (state == NULL)
3206 return;
3207 memset(state, 0, sizeof(struct i810_state));
3208 dmabuf = &state->dmabuf;
3209
3210 dmabuf->write_channel = card->alloc_pcm_channel(card);
3211 state->virt = 0;
3212 state->card = card;
3213 state->magic = I810_STATE_MAGIC;
3214 init_waitqueue_head(&dmabuf->wait);
3215 init_MUTEX(&state->open_sem);
3216 dmabuf->fmt = I810_FMT_STEREO | I810_FMT_16BIT;
3217 dmabuf->trigger = PCM_ENABLE_OUTPUT;
3218 i810_set_spdif_output(state, -1, 0);
3219 i810_set_dac_channels(state, 2);
3220 i810_set_dac_rate(state, 48000);
3221 if(prog_dmabuf(state, 0) != 0) {
3222 goto config_out_nodmabuf;
3223 }
3224 if(dmabuf->dmasize < 16384) {
3225 goto config_out;
3226 }
3227 dmabuf->count = dmabuf->dmasize;
3228 CIV_TO_LVI(card, dmabuf->write_channel->port, -1);
3229 local_irq_save(flags);
3230 start_dac(state);
3231 offset = i810_get_dma_addr(state, 0);
3232 mdelay(50);
3233 new_offset = i810_get_dma_addr(state, 0);
3234 stop_dac(state);
3235 local_irq_restore(flags);
3236 i = new_offset - offset;
3237 #ifdef DEBUG_INTERRUPTS
3238 printk("i810_audio: %d bytes in 50 milliseconds\n", i);
3239 #endif
3240 if(i == 0)
3241 goto config_out;
3242 i = i / 4 * 20;
3243 if (i > 48500 || i < 47500) {
3244 clocking = clocking * clocking / i;
3245 printk("i810_audio: setting clocking to %d\n", clocking);
3246 }
3247 config_out:
3248 dealloc_dmabuf(state);
3249 config_out_nodmabuf:
3250 state->card->free_pcm_channel(state->card,state->dmabuf.write_channel->num);
3251 kfree(state);
3252 card->states[0] = NULL;
3253 }
3254 }
3255
3256 /* install the driver, we do not allocate hardware channel nor DMA buffer now, they are defered
3257 until "ACCESS" time (in prog_dmabuf called by open/read/write/ioctl/mmap) */
3258
3259 static int __devinit i810_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
3260 {
3261 struct i810_card *card;
3262
3263 if (pci_enable_device(pci_dev))
3264 return -EIO;
3265
3266 if (pci_set_dma_mask(pci_dev, I810_DMA_MASK)) {
3267 printk(KERN_ERR "i810_audio: architecture does not support"
3268 " 32bit PCI busmaster DMA\n");
3269 return -ENODEV;
3270 }
3271
3272 if ((card = kmalloc(sizeof(struct i810_card), GFP_KERNEL)) == NULL) {
3273 printk(KERN_ERR "i810_audio: out of memory\n");
3274 return -ENOMEM;
3275 }
3276 memset(card, 0, sizeof(*card));
3277
3278 card->initializing = 1;
3279 card->pci_dev = pci_dev;
3280 card->pci_id = pci_id->device;
3281 card->ac97base = pci_resource_start (pci_dev, 0);
3282 card->iobase = pci_resource_start (pci_dev, 1);
3283
3284 if (!(card->ac97base) || !(card->iobase)) {
3285 card->ac97base = 0;
3286 card->iobase = 0;
3287 }
3288
3289 /* if chipset could have mmio capability, check it */
3290 if (card_cap[pci_id->driver_data].flags & CAP_MMIO) {
3291 card->ac97base_mmio_phys = pci_resource_start (pci_dev, 2);
3292 card->iobase_mmio_phys = pci_resource_start (pci_dev, 3);
3293
3294 if ((card->ac97base_mmio_phys) && (card->iobase_mmio_phys)) {
3295 card->use_mmio = 1;
3296 }
3297 else {
3298 card->ac97base_mmio_phys = 0;
3299 card->iobase_mmio_phys = 0;
3300 }
3301 }
3302
3303 if (!(card->use_mmio) && (!(card->iobase) || !(card->ac97base))) {
3304 printk(KERN_ERR "i810_audio: No I/O resources available.\n");
3305 goto out_mem;
3306 }
3307
3308 card->irq = pci_dev->irq;
3309 card->next = devs;
3310 card->magic = I810_CARD_MAGIC;
3311 #ifdef CONFIG_PM
3312 card->pm_suspended=0;
3313 #endif
3314 spin_lock_init(&card->lock);
3315 spin_lock_init(&card->ac97_lock);
3316 devs = card;
3317
3318 pci_set_master(pci_dev);
3319
3320 printk(KERN_INFO "i810: %s found at IO 0x%04lx and 0x%04lx, "
3321 "MEM 0x%04lx and 0x%04lx, IRQ %d\n",
3322 card_names[pci_id->driver_data],
3323 card->iobase, card->ac97base,
3324 card->ac97base_mmio_phys, card->iobase_mmio_phys,
3325 card->irq);
3326
3327 card->alloc_pcm_channel = i810_alloc_pcm_channel;
3328 card->alloc_rec_pcm_channel = i810_alloc_rec_pcm_channel;
3329 card->alloc_rec_mic_channel = i810_alloc_rec_mic_channel;
3330 card->free_pcm_channel = i810_free_pcm_channel;
3331
3332 if ((card->channel = pci_alloc_consistent(pci_dev,
3333 sizeof(struct i810_channel)*NR_HW_CH, &card->chandma)) == NULL) {
3334 printk(KERN_ERR "i810: cannot allocate channel DMA memory\n");
3335 goto out_mem;
3336 }
3337
3338 { /* We may dispose of this altogether some time soon, so... */
3339 struct i810_channel *cp = card->channel;
3340
3341 cp[0].offset = 0;
3342 cp[0].port = 0x00;
3343 cp[0].num = 0;
3344 cp[1].offset = 0;
3345 cp[1].port = 0x10;
3346 cp[1].num = 1;
3347 cp[2].offset = 0;
3348 cp[2].port = 0x20;
3349 cp[2].num = 2;
3350 }
3351
3352 /* claim our iospace and irq */
3353 if (!request_region(card->iobase, 64, card_names[pci_id->driver_data])) {
3354 printk(KERN_ERR "i810_audio: unable to allocate region %lx\n", card->iobase);
3355 goto out_region1;
3356 }
3357 if (!request_region(card->ac97base, 256, card_names[pci_id->driver_data])) {
3358 printk(KERN_ERR "i810_audio: unable to allocate region %lx\n", card->ac97base);
3359 goto out_region2;
3360 }
3361
3362 if (request_irq(card->irq, &i810_interrupt, SA_SHIRQ,
3363 card_names[pci_id->driver_data], card)) {
3364 printk(KERN_ERR "i810_audio: unable to allocate irq %d\n", card->irq);
3365 goto out_pio;
3366 }
3367
3368 if (card->use_mmio) {
3369 if (request_mem_region(card->ac97base_mmio_phys, 512, "ich_audio MMBAR")) {
3370 if ((card->ac97base_mmio = ioremap(card->ac97base_mmio_phys, 512))) { /*@FIXME can ioremap fail? don't know (jsaw) */
3371 if (request_mem_region(card->iobase_mmio_phys, 256, "ich_audio MBBAR")) {
3372 if ((card->iobase_mmio = ioremap(card->iobase_mmio_phys, 256))) {
3373 printk(KERN_INFO "i810: %s mmio at 0x%04lx and 0x%04lx\n",
3374 card_names[pci_id->driver_data],
3375 (unsigned long) card->ac97base_mmio,
3376 (unsigned long) card->iobase_mmio);
3377 }
3378 else {
3379 iounmap(card->ac97base_mmio);
3380 release_mem_region(card->ac97base_mmio_phys, 512);
3381 release_mem_region(card->iobase_mmio_phys, 512);
3382 card->use_mmio = 0;
3383 }
3384 }
3385 else {
3386 iounmap(card->ac97base_mmio);
3387 release_mem_region(card->ac97base_mmio_phys, 512);
3388 card->use_mmio = 0;
3389 }
3390 }
3391 }
3392 else {
3393 card->use_mmio = 0;
3394 }
3395 }
3396
3397 /* initialize AC97 codec and register /dev/mixer */
3398 if (i810_ac97_init(card) <= 0) {
3399 free_irq(card->irq, card);
3400 goto out_iospace;
3401 }
3402 pci_set_drvdata(pci_dev, card);
3403
3404 if(clocking == 0) {
3405 clocking = 48000;
3406 i810_configure_clocking();
3407 }
3408
3409 /* register /dev/dsp */
3410 if ((card->dev_audio = register_sound_dsp(&i810_audio_fops, -1)) < 0) {
3411 int i;
3412 printk(KERN_ERR "i810_audio: couldn't register DSP device!\n");
3413 free_irq(card->irq, card);
3414 for (i = 0; i < NR_AC97; i++)
3415 if (card->ac97_codec[i] != NULL) {
3416 unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
3417 ac97_release_codec(card->ac97_codec[i]);
3418 }
3419 goto out_iospace;
3420 }
3421
3422 card->initializing = 0;
3423 return 0;
3424
3425 out_iospace:
3426 if (card->use_mmio) {
3427 iounmap(card->ac97base_mmio);
3428 iounmap(card->iobase_mmio);
3429 release_mem_region(card->ac97base_mmio_phys, 512);
3430 release_mem_region(card->iobase_mmio_phys, 256);
3431 }
3432 out_pio:
3433 release_region(card->iobase, 64);
3434 out_region2:
3435 release_region(card->ac97base, 256);
3436 out_region1:
3437 pci_free_consistent(pci_dev, sizeof(struct i810_channel)*NR_HW_CH,
3438 card->channel, card->chandma);
3439 out_mem:
3440 kfree(card);
3441 return -ENODEV;
3442 }
3443
3444 static void __devexit i810_remove(struct pci_dev *pci_dev)
3445 {
3446 int i;
3447 struct i810_card *card = pci_get_drvdata(pci_dev);
3448 /* free hardware resources */
3449 free_irq(card->irq, devs);
3450 release_region(card->iobase, 64);
3451 release_region(card->ac97base, 256);
3452 pci_free_consistent(pci_dev, sizeof(struct i810_channel)*NR_HW_CH,
3453 card->channel, card->chandma);
3454 if (card->use_mmio) {
3455 iounmap(card->ac97base_mmio);
3456 iounmap(card->iobase_mmio);
3457 release_mem_region(card->ac97base_mmio_phys, 512);
3458 release_mem_region(card->iobase_mmio_phys, 256);
3459 }
3460
3461 /* unregister audio devices */
3462 for (i = 0; i < NR_AC97; i++)
3463 if (card->ac97_codec[i] != NULL) {
3464 unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
3465 ac97_release_codec(card->ac97_codec[i]);
3466 card->ac97_codec[i] = NULL;
3467 }
3468 unregister_sound_dsp(card->dev_audio);
3469 kfree(card);
3470 }
3471
3472 #ifdef CONFIG_PM
3473 static int i810_pm_suspend(struct pci_dev *dev, pm_message_t pm_state)
3474 {
3475 struct i810_card *card = pci_get_drvdata(dev);
3476 struct i810_state *state;
3477 unsigned long flags;
3478 struct dmabuf *dmabuf;
3479 int i,num_ac97;
3480 #ifdef DEBUG
3481 printk("i810_audio: i810_pm_suspend called\n");
3482 #endif
3483 if(!card) return 0;
3484 spin_lock_irqsave(&card->lock, flags);
3485 card->pm_suspended=1;
3486 for(i=0;i<NR_HW_CH;i++) {
3487 state = card->states[i];
3488 if(!state) continue;
3489 /* this happens only if there are open files */
3490 dmabuf = &state->dmabuf;
3491 if(dmabuf->enable & DAC_RUNNING ||
3492 (dmabuf->count && (dmabuf->trigger & PCM_ENABLE_OUTPUT))) {
3493 state->pm_saved_dac_rate=dmabuf->rate;
3494 stop_dac(state);
3495 } else {
3496 state->pm_saved_dac_rate=0;
3497 }
3498 if(dmabuf->enable & ADC_RUNNING) {
3499 state->pm_saved_adc_rate=dmabuf->rate;
3500 stop_adc(state);
3501 } else {
3502 state->pm_saved_adc_rate=0;
3503 }
3504 dmabuf->ready = 0;
3505 dmabuf->swptr = dmabuf->hwptr = 0;
3506 dmabuf->count = dmabuf->total_bytes = 0;
3507 }
3508
3509 spin_unlock_irqrestore(&card->lock, flags);
3510
3511 /* save mixer settings */
3512 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
3513 struct ac97_codec *codec = card->ac97_codec[num_ac97];
3514 if(!codec) continue;
3515 for(i=0;i< SOUND_MIXER_NRDEVICES ;i++) {
3516 if((supported_mixer(codec,i)) &&
3517 (codec->read_mixer)) {
3518 card->pm_saved_mixer_settings[i][num_ac97]=
3519 codec->read_mixer(codec,i);
3520 }
3521 }
3522 }
3523 pci_save_state(dev); /* XXX do we need this? */
3524 pci_disable_device(dev); /* disable busmastering */
3525 pci_set_power_state(dev,3); /* Zzz. */
3526
3527 return 0;
3528 }
3529
3530
3531 static int i810_pm_resume(struct pci_dev *dev)
3532 {
3533 int num_ac97,i=0;
3534 struct i810_card *card=pci_get_drvdata(dev);
3535 pci_enable_device(dev);
3536 pci_restore_state (dev);
3537
3538 /* observation of a toshiba portege 3440ct suggests that the
3539 hardware has to be more or less completely reinitialized from
3540 scratch after an apm suspend. Works For Me. -dan */
3541
3542 i810_ac97_power_up_bus(card);
3543
3544 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
3545 struct ac97_codec *codec = card->ac97_codec[num_ac97];
3546 /* check they haven't stolen the hardware while we were
3547 away */
3548 if(!codec || !i810_ac97_exists(card,num_ac97)) {
3549 if(num_ac97) continue;
3550 else BUG();
3551 }
3552 if(!i810_ac97_probe_and_powerup(card,codec)) BUG();
3553
3554 if((card->ac97_features&0x0001)) {
3555 /* at probe time we found we could do variable
3556 rates, but APM suspend has made it forget
3557 its magical powers */
3558 if(!i810_ac97_enable_variable_rate(codec)) BUG();
3559 }
3560 /* we lost our mixer settings, so restore them */
3561 for(i=0;i< SOUND_MIXER_NRDEVICES ;i++) {
3562 if(supported_mixer(codec,i)){
3563 int val=card->
3564 pm_saved_mixer_settings[i][num_ac97];
3565 codec->mixer_state[i]=val;
3566 codec->write_mixer(codec,i,
3567 (val & 0xff) ,
3568 ((val >> 8) & 0xff) );
3569 }
3570 }
3571 }
3572
3573 /* we need to restore the sample rate from whatever it was */
3574 for(i=0;i<NR_HW_CH;i++) {
3575 struct i810_state * state=card->states[i];
3576 if(state) {
3577 if(state->pm_saved_adc_rate)
3578 i810_set_adc_rate(state,state->pm_saved_adc_rate);
3579 if(state->pm_saved_dac_rate)
3580 i810_set_dac_rate(state,state->pm_saved_dac_rate);
3581 }
3582 }
3583
3584
3585 card->pm_suspended = 0;
3586
3587 /* any processes that were reading/writing during the suspend
3588 probably ended up here */
3589 for(i=0;i<NR_HW_CH;i++) {
3590 struct i810_state *state = card->states[i];
3591 if(state) wake_up(&state->dmabuf.wait);
3592 }
3593
3594 return 0;
3595 }
3596 #endif /* CONFIG_PM */
3597
3598 MODULE_AUTHOR("The Linux kernel team");
3599 MODULE_DESCRIPTION("Intel 810 audio support");
3600 MODULE_LICENSE("GPL");
3601 module_param(ftsodell, int, 0444);
3602 module_param(clocking, uint, 0444);
3603 module_param(strict_clocking, int, 0444);
3604 module_param(spdif_locked, int, 0444);
3605
3606 #define I810_MODULE_NAME "i810_audio"
3607
3608 static struct pci_driver i810_pci_driver = {
3609 .name = I810_MODULE_NAME,
3610 .id_table = i810_pci_tbl,
3611 .probe = i810_probe,
3612 .remove = __devexit_p(i810_remove),
3613 #ifdef CONFIG_PM
3614 .suspend = i810_pm_suspend,
3615 .resume = i810_pm_resume,
3616 #endif /* CONFIG_PM */
3617 };
3618
3619
3620 static int __init i810_init_module (void)
3621 {
3622 int retval;
3623
3624 printk(KERN_INFO "Intel 810 + AC97 Audio, version "
3625 DRIVER_VERSION ", " __TIME__ " " __DATE__ "\n");
3626
3627 retval = pci_register_driver(&i810_pci_driver);
3628 if (retval)
3629 return retval;
3630
3631 if(ftsodell != 0) {
3632 printk("i810_audio: ftsodell is now a deprecated option.\n");
3633 }
3634 if(spdif_locked > 0 ) {
3635 if(spdif_locked == 32000 || spdif_locked == 44100 || spdif_locked == 48000) {
3636 printk("i810_audio: Enabling S/PDIF at sample rate %dHz.\n", spdif_locked);
3637 } else {
3638 printk("i810_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
3639 spdif_locked = 0;
3640 }
3641 }
3642
3643 return 0;
3644 }
3645
3646 static void __exit i810_cleanup_module (void)
3647 {
3648 pci_unregister_driver(&i810_pci_driver);
3649 }
3650
3651 module_init(i810_init_module);
3652 module_exit(i810_cleanup_module);
3653
3654 /*
3655 Local Variables:
3656 c-basic-offset: 8
3657 End:
3658 */
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