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agp: alpha nopage
[linux-2.6/mini2440.git] / sound / oss / i810_audio.c
blobf5e31f11973d39a1ae995dd0d311c253c028551c
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 <linux/mutex.h>
104 #include <linux/mm.h>
105
106 #include <asm/uaccess.h>
107
108 #define DRIVER_VERSION "1.01"
109
110 #define MODULOP2(a, b) ((a) & ((b) - 1))
111 #define MASKP2(a, b) ((a) & ~((b) - 1))
112
113 static int ftsodell;
114 static int strict_clocking;
115 static unsigned int clocking;
116 static int spdif_locked;
117 static int ac97_quirk = AC97_TUNE_DEFAULT;
118
119 //#define DEBUG
120 //#define DEBUG2
121 //#define DEBUG_INTERRUPTS
122 //#define DEBUG_MMAP
123 //#define DEBUG_MMIO
124
125 #define ADC_RUNNING 1
126 #define DAC_RUNNING 2
127
128 #define I810_FMT_16BIT 1
129 #define I810_FMT_STEREO 2
130 #define I810_FMT_MASK 3
131
132 #define SPDIF_ON 0x0004
133 #define SURR_ON 0x0010
134 #define CENTER_LFE_ON 0x0020
135 #define VOL_MUTED 0x8000
136
137 /* the 810's array of pointers to data buffers */
138
139 struct sg_item {
140 #define BUSADDR_MASK 0xFFFFFFFE
141 u32 busaddr;
142 #define CON_IOC 0x80000000 /* interrupt on completion */
143 #define CON_BUFPAD 0x40000000 /* pad underrun with last sample, else 0 */
144 #define CON_BUFLEN_MASK 0x0000ffff /* buffer length in samples */
145 u32 control;
146 };
147
148 /* an instance of the i810 channel */
149 #define SG_LEN 32
150 struct i810_channel
151 {
152 /* these sg guys should probably be allocated
153 separately as nocache. Must be 8 byte aligned */
154 struct sg_item sg[SG_LEN]; /* 32*8 */
155 u32 offset; /* 4 */
156 u32 port; /* 4 */
157 u32 used;
158 u32 num;
159 };
160
161 /*
162 * we have 3 separate dma engines. pcm in, pcm out, and mic.
163 * each dma engine has controlling registers. These goofy
164 * names are from the datasheet, but make it easy to write
165 * code while leafing through it.
166 *
167 * ICH4 has 6 dma engines, pcm in, pcm out, mic, pcm in 2,
168 * mic in 2, s/pdif. Of special interest is the fact that
169 * the upper 3 DMA engines on the ICH4 *must* be accessed
170 * via mmio access instead of pio access.
171 */
172
173 #define ENUM_ENGINE(PRE,DIG) \
174 enum { \
175 PRE##_BASE = 0x##DIG##0, /* Base Address */ \
176 PRE##_BDBAR = 0x##DIG##0, /* Buffer Descriptor list Base Address */ \
177 PRE##_CIV = 0x##DIG##4, /* Current Index Value */ \
178 PRE##_LVI = 0x##DIG##5, /* Last Valid Index */ \
179 PRE##_SR = 0x##DIG##6, /* Status Register */ \
180 PRE##_PICB = 0x##DIG##8, /* Position In Current Buffer */ \
181 PRE##_PIV = 0x##DIG##a, /* Prefetched Index Value */ \
182 PRE##_CR = 0x##DIG##b /* Control Register */ \
183 }
184
185 ENUM_ENGINE(OFF,0); /* Offsets */
186 ENUM_ENGINE(PI,0); /* PCM In */
187 ENUM_ENGINE(PO,1); /* PCM Out */
188 ENUM_ENGINE(MC,2); /* Mic In */
189
190 enum {
191 GLOB_CNT = 0x2c, /* Global Control */
192 GLOB_STA = 0x30, /* Global Status */
193 CAS = 0x34 /* Codec Write Semaphore Register */
194 };
195
196 ENUM_ENGINE(MC2,4); /* Mic In 2 */
197 ENUM_ENGINE(PI2,5); /* PCM In 2 */
198 ENUM_ENGINE(SP,6); /* S/PDIF */
199
200 enum {
201 SDM = 0x80 /* SDATA_IN Map Register */
202 };
203
204 /* interrupts for a dma engine */
205 #define DMA_INT_FIFO (1<<4) /* fifo under/over flow */
206 #define DMA_INT_COMPLETE (1<<3) /* buffer read/write complete and ioc set */
207 #define DMA_INT_LVI (1<<2) /* last valid done */
208 #define DMA_INT_CELV (1<<1) /* last valid is current */
209 #define DMA_INT_DCH (1) /* DMA Controller Halted (happens on LVI interrupts) */
210 #define DMA_INT_MASK (DMA_INT_FIFO|DMA_INT_COMPLETE|DMA_INT_LVI)
211
212 /* interrupts for the whole chip */
213 #define INT_SEC (1<<11)
214 #define INT_PRI (1<<10)
215 #define INT_MC (1<<7)
216 #define INT_PO (1<<6)
217 #define INT_PI (1<<5)
218 #define INT_MO (1<<2)
219 #define INT_NI (1<<1)
220 #define INT_GPI (1<<0)
221 #define INT_MASK (INT_SEC|INT_PRI|INT_MC|INT_PO|INT_PI|INT_MO|INT_NI|INT_GPI)
222
223 /* magic numbers to protect our data structures */
224 #define I810_CARD_MAGIC 0x5072696E /* "Prin" */
225 #define I810_STATE_MAGIC 0x63657373 /* "cess" */
226 #define I810_DMA_MASK 0xffffffff /* DMA buffer mask for pci_alloc_consist */
227 #define NR_HW_CH 3
228
229 /* maxinum number of AC97 codecs connected, AC97 2.0 defined 4 */
230 #define NR_AC97 4
231
232 /* Please note that an 8bit mono stream is not valid on this card, you must have a 16bit */
233 /* stream at a minimum for this card to be happy */
234 static const unsigned sample_size[] = { 1, 2, 2, 4 };
235 /* Samples are 16bit values, so we are shifting to a word, not to a byte, hence shift */
236 /* values are one less than might be expected */
237 static const unsigned sample_shift[] = { -1, 0, 0, 1 };
238
239 enum {
240 ICH82801AA = 0,
241 ICH82901AB,
242 INTEL440MX,
243 INTELICH2,
244 INTELICH3,
245 INTELICH4,
246 INTELICH5,
247 SI7012,
248 NVIDIA_NFORCE,
249 AMD768,
250 AMD8111
251 };
252
253 static char * card_names[] = {
254 "Intel ICH 82801AA",
255 "Intel ICH 82901AB",
256 "Intel 440MX",
257 "Intel ICH2",
258 "Intel ICH3",
259 "Intel ICH4",
260 "Intel ICH5",
261 "SiS 7012",
262 "NVIDIA nForce Audio",
263 "AMD 768",
264 "AMD-8111 IOHub"
265 };
266
267 /* These are capabilities (and bugs) the chipsets _can_ have */
268 static struct {
269 int16_t nr_ac97;
270 #define CAP_MMIO 0x0001
271 #define CAP_20BIT_AUDIO_SUPPORT 0x0002
272 u_int16_t flags;
273 } card_cap[] = {
274 { 1, 0x0000 }, /* ICH82801AA */
275 { 1, 0x0000 }, /* ICH82901AB */
276 { 1, 0x0000 }, /* INTEL440MX */
277 { 1, 0x0000 }, /* INTELICH2 */
278 { 2, 0x0000 }, /* INTELICH3 */
279 { 3, 0x0003 }, /* INTELICH4 */
280 { 3, 0x0003 }, /* INTELICH5 */
281 /*@FIXME to be verified*/ { 2, 0x0000 }, /* SI7012 */
282 /*@FIXME to be verified*/ { 2, 0x0000 }, /* NVIDIA_NFORCE */
283 /*@FIXME to be verified*/ { 2, 0x0000 }, /* AMD768 */
284 /*@FIXME to be verified*/ { 3, 0x0001 }, /* AMD8111 */
285 };
286
287 static struct pci_device_id i810_pci_tbl [] = {
288 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_5,
289 PCI_ANY_ID, PCI_ANY_ID, 0, 0, ICH82801AA},
290 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_5,
291 PCI_ANY_ID, PCI_ANY_ID, 0, 0, ICH82901AB},
292 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_440MX,
293 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTEL440MX},
294 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_4,
295 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH2},
296 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_5,
297 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH3},
298 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_5,
299 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH4},
300 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_5,
301 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH5},
302 {PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_7012,
303 PCI_ANY_ID, PCI_ANY_ID, 0, 0, SI7012},
304 {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP1_AUDIO,
305 PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
306 {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP2_AUDIO,
307 PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
308 {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP3_AUDIO,
309 PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
310 {PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_OPUS_7445,
311 PCI_ANY_ID, PCI_ANY_ID, 0, 0, AMD768},
312 {PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_AUDIO,
313 PCI_ANY_ID, PCI_ANY_ID, 0, 0, AMD8111},
314 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_5,
315 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH4},
316 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_18,
317 PCI_ANY_ID, PCI_ANY_ID, 0, 0, INTELICH4},
318 {PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_AUDIO,
319 PCI_ANY_ID, PCI_ANY_ID, 0, 0, NVIDIA_NFORCE},
320 {0,}
321 };
322
323 MODULE_DEVICE_TABLE (pci, i810_pci_tbl);
324
325 #ifdef CONFIG_PM
326 #define PM_SUSPENDED(card) (card->pm_suspended)
327 #else
328 #define PM_SUSPENDED(card) (0)
329 #endif
330
331 /* "software" or virtual channel, an instance of opened /dev/dsp */
332 struct i810_state {
333 unsigned int magic;
334 struct i810_card *card; /* Card info */
335
336 /* single open lock mechanism, only used for recording */
337 struct mutex open_mutex;
338 wait_queue_head_t open_wait;
339
340 /* file mode */
341 mode_t open_mode;
342
343 /* virtual channel number */
344 int virt;
345
346 #ifdef CONFIG_PM
347 unsigned int pm_saved_dac_rate,pm_saved_adc_rate;
348 #endif
349 struct dmabuf {
350 /* wave sample stuff */
351 unsigned int rate;
352 unsigned char fmt, enable, trigger;
353
354 /* hardware channel */
355 struct i810_channel *read_channel;
356 struct i810_channel *write_channel;
357
358 /* OSS buffer management stuff */
359 void *rawbuf;
360 dma_addr_t dma_handle;
361 unsigned buforder;
362 unsigned numfrag;
363 unsigned fragshift;
364
365 /* our buffer acts like a circular ring */
366 unsigned hwptr; /* where dma last started, updated by update_ptr */
367 unsigned swptr; /* where driver last clear/filled, updated by read/write */
368 int count; /* bytes to be consumed or been generated by dma machine */
369 unsigned total_bytes; /* total bytes dmaed by hardware */
370
371 unsigned error; /* number of over/underruns */
372 wait_queue_head_t wait; /* put process on wait queue when no more space in buffer */
373
374 /* redundant, but makes calculations easier */
375 /* what the hardware uses */
376 unsigned dmasize;
377 unsigned fragsize;
378 unsigned fragsamples;
379
380 /* what we tell the user to expect */
381 unsigned userfrags;
382 unsigned userfragsize;
383
384 /* OSS stuff */
385 unsigned mapped:1;
386 unsigned ready:1;
387 unsigned update_flag;
388 unsigned ossfragsize;
389 unsigned ossmaxfrags;
390 unsigned subdivision;
391 } dmabuf;
392 };
393
394
395 struct i810_card {
396 unsigned int magic;
397
398 /* We keep i810 cards in a linked list */
399 struct i810_card *next;
400
401 /* The i810 has a certain amount of cross channel interaction
402 so we use a single per card lock */
403 spinlock_t lock;
404
405 /* Control AC97 access serialization */
406 spinlock_t ac97_lock;
407
408 /* PCI device stuff */
409 struct pci_dev * pci_dev;
410 u16 pci_id;
411 u16 pci_id_internal; /* used to access card_cap[] */
412 #ifdef CONFIG_PM
413 u16 pm_suspended;
414 int pm_saved_mixer_settings[SOUND_MIXER_NRDEVICES][NR_AC97];
415 #endif
416 /* soundcore stuff */
417 int dev_audio;
418
419 /* structures for abstraction of hardware facilities, codecs, banks and channels*/
420 u16 ac97_id_map[NR_AC97];
421 struct ac97_codec *ac97_codec[NR_AC97];
422 struct i810_state *states[NR_HW_CH];
423 struct i810_channel *channel; /* 1:1 to states[] but diff. lifetime */
424 dma_addr_t chandma;
425
426 u16 ac97_features;
427 u16 ac97_status;
428 u16 channels;
429
430 /* hardware resources */
431 unsigned long ac97base;
432 unsigned long iobase;
433 u32 irq;
434
435 unsigned long ac97base_mmio_phys;
436 unsigned long iobase_mmio_phys;
437 u_int8_t __iomem *ac97base_mmio;
438 u_int8_t __iomem *iobase_mmio;
439
440 int use_mmio;
441
442 /* Function support */
443 struct i810_channel *(*alloc_pcm_channel)(struct i810_card *);
444 struct i810_channel *(*alloc_rec_pcm_channel)(struct i810_card *);
445 struct i810_channel *(*alloc_rec_mic_channel)(struct i810_card *);
446 void (*free_pcm_channel)(struct i810_card *, int chan);
447
448 /* We have a *very* long init time possibly, so use this to block */
449 /* attempts to open our devices before we are ready (stops oops'es) */
450 int initializing;
451 };
452
453 /* extract register offset from codec struct */
454 #define IO_REG_OFF(codec) (((struct i810_card *) codec->private_data)->ac97_id_map[codec->id])
455
456 #define I810_IOREAD(size, type, card, off) \
457 ({ \
458 type val; \
459 if (card->use_mmio) \
460 val=read##size(card->iobase_mmio+off); \
461 else \
462 val=in##size(card->iobase+off); \
463 val; \
464 })
465
466 #define I810_IOREADL(card, off) I810_IOREAD(l, u32, card, off)
467 #define I810_IOREADW(card, off) I810_IOREAD(w, u16, card, off)
468 #define I810_IOREADB(card, off) I810_IOREAD(b, u8, card, off)
469
470 #define I810_IOWRITE(size, val, card, off) \
471 ({ \
472 if (card->use_mmio) \
473 write##size(val, card->iobase_mmio+off); \
474 else \
475 out##size(val, card->iobase+off); \
476 })
477
478 #define I810_IOWRITEL(val, card, off) I810_IOWRITE(l, val, card, off)
479 #define I810_IOWRITEW(val, card, off) I810_IOWRITE(w, val, card, off)
480 #define I810_IOWRITEB(val, card, off) I810_IOWRITE(b, val, card, off)
481
482 #define GET_CIV(card, port) MODULOP2(I810_IOREADB((card), (port) + OFF_CIV), SG_LEN)
483 #define GET_LVI(card, port) MODULOP2(I810_IOREADB((card), (port) + OFF_LVI), SG_LEN)
484
485 /* set LVI from CIV */
486 #define CIV_TO_LVI(card, port, off) \
487 I810_IOWRITEB(MODULOP2(GET_CIV((card), (port)) + (off), SG_LEN), (card), (port) + OFF_LVI)
488
489 static struct ac97_quirk ac97_quirks[] __devinitdata = {
490 {
491 .vendor = 0x0e11,
492 .device = 0x00b8,
493 .name = "Compaq Evo D510C",
494 .type = AC97_TUNE_HP_ONLY
495 },
496 {
497 .vendor = 0x1028,
498 .device = 0x00d8,
499 .name = "Dell Precision 530", /* AD1885 */
500 .type = AC97_TUNE_HP_ONLY
501 },
502 {
503 .vendor = 0x1028,
504 .device = 0x0126,
505 .name = "Dell Optiplex GX260", /* AD1981A */
506 .type = AC97_TUNE_HP_ONLY
507 },
508 {
509 .vendor = 0x1028,
510 .device = 0x012d,
511 .name = "Dell Precision 450", /* AD1981B*/
512 .type = AC97_TUNE_HP_ONLY
513 },
514 { /* FIXME: which codec? */
515 .vendor = 0x103c,
516 .device = 0x00c3,
517 .name = "Hewlett-Packard onboard",
518 .type = AC97_TUNE_HP_ONLY
519 },
520 {
521 .vendor = 0x103c,
522 .device = 0x12f1,
523 .name = "HP xw8200", /* AD1981B*/
524 .type = AC97_TUNE_HP_ONLY
525 },
526 {
527 .vendor = 0x103c,
528 .device = 0x3008,
529 .name = "HP xw4200", /* AD1981B*/
530 .type = AC97_TUNE_HP_ONLY
531 },
532 {
533 .vendor = 0x10f1,
534 .device = 0x2665,
535 .name = "Fujitsu-Siemens Celsius", /* AD1981? */
536 .type = AC97_TUNE_HP_ONLY
537 },
538 {
539 .vendor = 0x10f1,
540 .device = 0x2885,
541 .name = "AMD64 Mobo", /* ALC650 */
542 .type = AC97_TUNE_HP_ONLY
543 },
544 {
545 .vendor = 0x110a,
546 .device = 0x0056,
547 .name = "Fujitsu-Siemens Scenic", /* AD1981? */
548 .type = AC97_TUNE_HP_ONLY
549 },
550 {
551 .vendor = 0x11d4,
552 .device = 0x5375,
553 .name = "ADI AD1985 (discrete)",
554 .type = AC97_TUNE_HP_ONLY
555 },
556 {
557 .vendor = 0x1462,
558 .device = 0x5470,
559 .name = "MSI P4 ATX 645 Ultra",
560 .type = AC97_TUNE_HP_ONLY
561 },
562 {
563 .vendor = 0x1734,
564 .device = 0x0088,
565 .name = "Fujitsu-Siemens D1522", /* AD1981 */
566 .type = AC97_TUNE_HP_ONLY
567 },
568 {
569 .vendor = 0x8086,
570 .device = 0x4856,
571 .name = "Intel D845WN (82801BA)",
572 .type = AC97_TUNE_SWAP_HP
573 },
574 {
575 .vendor = 0x8086,
576 .device = 0x4d44,
577 .name = "Intel D850EMV2", /* AD1885 */
578 .type = AC97_TUNE_HP_ONLY
579 },
580 {
581 .vendor = 0x8086,
582 .device = 0x4d56,
583 .name = "Intel ICH/AD1885",
584 .type = AC97_TUNE_HP_ONLY
585 },
586 {
587 .vendor = 0x1028,
588 .device = 0x012d,
589 .name = "Dell Precision 450", /* AD1981B*/
590 .type = AC97_TUNE_HP_ONLY
591 },
592 {
593 .vendor = 0x103c,
594 .device = 0x3008,
595 .name = "HP xw4200", /* AD1981B*/
596 .type = AC97_TUNE_HP_ONLY
597 },
598 {
599 .vendor = 0x103c,
600 .device = 0x12f1,
601 .name = "HP xw8200", /* AD1981B*/
602 .type = AC97_TUNE_HP_ONLY
603 },
604 { } /* terminator */
605 };
606
607 static struct i810_card *devs = NULL;
608
609 static int i810_open_mixdev(struct inode *inode, struct file *file);
610 static int i810_ioctl_mixdev(struct inode *inode, struct file *file,
611 unsigned int cmd, unsigned long arg);
612 static u16 i810_ac97_get(struct ac97_codec *dev, u8 reg);
613 static void i810_ac97_set(struct ac97_codec *dev, u8 reg, u16 data);
614 static u16 i810_ac97_get_mmio(struct ac97_codec *dev, u8 reg);
615 static void i810_ac97_set_mmio(struct ac97_codec *dev, u8 reg, u16 data);
616 static u16 i810_ac97_get_io(struct ac97_codec *dev, u8 reg);
617 static void i810_ac97_set_io(struct ac97_codec *dev, u8 reg, u16 data);
618
619 static struct i810_channel *i810_alloc_pcm_channel(struct i810_card *card)
620 {
621 if(card->channel[1].used==1)
622 return NULL;
623 card->channel[1].used=1;
624 return &card->channel[1];
625 }
626
627 static struct i810_channel *i810_alloc_rec_pcm_channel(struct i810_card *card)
628 {
629 if(card->channel[0].used==1)
630 return NULL;
631 card->channel[0].used=1;
632 return &card->channel[0];
633 }
634
635 static struct i810_channel *i810_alloc_rec_mic_channel(struct i810_card *card)
636 {
637 if(card->channel[2].used==1)
638 return NULL;
639 card->channel[2].used=1;
640 return &card->channel[2];
641 }
642
643 static void i810_free_pcm_channel(struct i810_card *card, int channel)
644 {
645 card->channel[channel].used=0;
646 }
647
648 static int i810_valid_spdif_rate ( struct ac97_codec *codec, int rate )
649 {
650 unsigned long id = 0L;
651
652 id = (i810_ac97_get(codec, AC97_VENDOR_ID1) << 16);
653 id |= i810_ac97_get(codec, AC97_VENDOR_ID2) & 0xffff;
654 #ifdef DEBUG
655 printk ( "i810_audio: codec = %s, codec_id = 0x%08lx\n", codec->name, id);
656 #endif
657 switch ( id ) {
658 case 0x41445361: /* AD1886 */
659 if (rate == 48000) {
660 return 1;
661 }
662 break;
663 default: /* all other codecs, until we know otherwiae */
664 if (rate == 48000 || rate == 44100 || rate == 32000) {
665 return 1;
666 }
667 break;
668 }
669 return (0);
670 }
671
672 /* i810_set_spdif_output
673 *
674 * Configure the S/PDIF output transmitter. When we turn on
675 * S/PDIF, we turn off the analog output. This may not be
676 * the right thing to do.
677 *
678 * Assumptions:
679 * The DSP sample rate must already be set to a supported
680 * S/PDIF rate (32kHz, 44.1kHz, or 48kHz) or we abort.
681 */
682 static int i810_set_spdif_output(struct i810_state *state, int slots, int rate)
683 {
684 int vol;
685 int aud_reg;
686 int r = 0;
687 struct ac97_codec *codec = state->card->ac97_codec[0];
688
689 if(!codec->codec_ops->digital) {
690 state->card->ac97_status &= ~SPDIF_ON;
691 } else {
692 if ( slots == -1 ) { /* Turn off S/PDIF */
693 codec->codec_ops->digital(codec, 0, 0, 0);
694 /* If the volume wasn't muted before we turned on S/PDIF, unmute it */
695 if ( !(state->card->ac97_status & VOL_MUTED) ) {
696 aud_reg = i810_ac97_get(codec, AC97_MASTER_VOL_STEREO);
697 i810_ac97_set(codec, AC97_MASTER_VOL_STEREO, (aud_reg & ~VOL_MUTED));
698 }
699 state->card->ac97_status &= ~(VOL_MUTED | SPDIF_ON);
700 return 0;
701 }
702
703 vol = i810_ac97_get(codec, AC97_MASTER_VOL_STEREO);
704 state->card->ac97_status = vol & VOL_MUTED;
705
706 r = codec->codec_ops->digital(codec, slots, rate, 0);
707
708 if(r)
709 state->card->ac97_status |= SPDIF_ON;
710 else
711 state->card->ac97_status &= ~SPDIF_ON;
712
713 /* Mute the analog output */
714 /* Should this only mute the PCM volume??? */
715 i810_ac97_set(codec, AC97_MASTER_VOL_STEREO, (vol | VOL_MUTED));
716 }
717 return r;
718 }
719
720 /* i810_set_dac_channels
721 *
722 * Configure the codec's multi-channel DACs
723 *
724 * The logic is backwards. Setting the bit to 1 turns off the DAC.
725 *
726 * What about the ICH? We currently configure it using the
727 * SNDCTL_DSP_CHANNELS ioctl. If we're turnning on the DAC,
728 * does that imply that we want the ICH set to support
729 * these channels?
730 *
731 * TODO:
732 * vailidate that the codec really supports these DACs
733 * before turning them on.
734 */
735 static void i810_set_dac_channels(struct i810_state *state, int channel)
736 {
737 int aud_reg;
738 struct ac97_codec *codec = state->card->ac97_codec[0];
739
740 /* No codec, no setup */
741
742 if(codec == NULL)
743 return;
744
745 aud_reg = i810_ac97_get(codec, AC97_EXTENDED_STATUS);
746 aud_reg |= AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK;
747 state->card->ac97_status &= ~(SURR_ON | CENTER_LFE_ON);
748
749 switch ( channel ) {
750 case 2: /* always enabled */
751 break;
752 case 4:
753 aud_reg &= ~AC97_EA_PRJ;
754 state->card->ac97_status |= SURR_ON;
755 break;
756 case 6:
757 aud_reg &= ~(AC97_EA_PRJ | AC97_EA_PRI | AC97_EA_PRK);
758 state->card->ac97_status |= SURR_ON | CENTER_LFE_ON;
759 break;
760 default:
761 break;
762 }
763 i810_ac97_set(codec, AC97_EXTENDED_STATUS, aud_reg);
764
765 }
766
767
768 /* set playback sample rate */
769 static unsigned int i810_set_dac_rate(struct i810_state * state, unsigned int rate)
770 {
771 struct dmabuf *dmabuf = &state->dmabuf;
772 u32 new_rate;
773 struct ac97_codec *codec=state->card->ac97_codec[0];
774
775 if(!(state->card->ac97_features&0x0001))
776 {
777 dmabuf->rate = clocking;
778 #ifdef DEBUG
779 printk("Asked for %d Hz, but ac97_features says we only do %dHz. Sorry!\n",
780 rate,clocking);
781 #endif
782 return clocking;
783 }
784
785 if (rate > 48000)
786 rate = 48000;
787 if (rate < 8000)
788 rate = 8000;
789 dmabuf->rate = rate;
790
791 /*
792 * Adjust for misclocked crap
793 */
794 rate = ( rate * clocking)/48000;
795 if(strict_clocking && rate < 8000) {
796 rate = 8000;
797 dmabuf->rate = (rate * 48000)/clocking;
798 }
799
800 new_rate=ac97_set_dac_rate(codec, rate);
801 if(new_rate != rate) {
802 dmabuf->rate = (new_rate * 48000)/clocking;
803 }
804 #ifdef DEBUG
805 printk("i810_audio: called i810_set_dac_rate : asked for %d, got %d\n", rate, dmabuf->rate);
806 #endif
807 rate = new_rate;
808 return dmabuf->rate;
809 }
810
811 /* set recording sample rate */
812 static unsigned int i810_set_adc_rate(struct i810_state * state, unsigned int rate)
813 {
814 struct dmabuf *dmabuf = &state->dmabuf;
815 u32 new_rate;
816 struct ac97_codec *codec=state->card->ac97_codec[0];
817
818 if(!(state->card->ac97_features&0x0001))
819 {
820 dmabuf->rate = clocking;
821 return clocking;
822 }
823
824 if (rate > 48000)
825 rate = 48000;
826 if (rate < 8000)
827 rate = 8000;
828 dmabuf->rate = rate;
829
830 /*
831 * Adjust for misclocked crap
832 */
833
834 rate = ( rate * clocking)/48000;
835 if(strict_clocking && rate < 8000) {
836 rate = 8000;
837 dmabuf->rate = (rate * 48000)/clocking;
838 }
839
840 new_rate = ac97_set_adc_rate(codec, rate);
841
842 if(new_rate != rate) {
843 dmabuf->rate = (new_rate * 48000)/clocking;
844 rate = new_rate;
845 }
846 #ifdef DEBUG
847 printk("i810_audio: called i810_set_adc_rate : rate = %d/%d\n", dmabuf->rate, rate);
848 #endif
849 return dmabuf->rate;
850 }
851
852 /* get current playback/recording dma buffer pointer (byte offset from LBA),
853 called with spinlock held! */
854
855 static inline unsigned i810_get_dma_addr(struct i810_state *state, int rec)
856 {
857 struct dmabuf *dmabuf = &state->dmabuf;
858 unsigned int civ, offset, port, port_picb, bytes = 2;
859
860 if (!dmabuf->enable)
861 return 0;
862
863 if (rec)
864 port = dmabuf->read_channel->port;
865 else
866 port = dmabuf->write_channel->port;
867
868 if(state->card->pci_id == PCI_DEVICE_ID_SI_7012) {
869 port_picb = port + OFF_SR;
870 bytes = 1;
871 } else
872 port_picb = port + OFF_PICB;
873
874 do {
875 civ = GET_CIV(state->card, port);
876 offset = I810_IOREADW(state->card, port_picb);
877 /* Must have a delay here! */
878 if(offset == 0)
879 udelay(1);
880 /* Reread both registers and make sure that that total
881 * offset from the first reading to the second is 0.
882 * There is an issue with SiS hardware where it will count
883 * picb down to 0, then update civ to the next value,
884 * then set the new picb to fragsize bytes. We can catch
885 * it between the civ update and the picb update, making
886 * it look as though we are 1 fragsize ahead of where we
887 * are. The next to we get the address though, it will
888 * be back in the right place, and we will suddenly think
889 * we just went forward dmasize - fragsize bytes, causing
890 * totally stupid *huge* dma overrun messages. We are
891 * assuming that the 1us delay is more than long enough
892 * that we won't have to worry about the chip still being
893 * out of sync with reality ;-)
894 */
895 } while (civ != GET_CIV(state->card, port) || offset != I810_IOREADW(state->card, port_picb));
896
897 return (((civ + 1) * dmabuf->fragsize - (bytes * offset))
898 % dmabuf->dmasize);
899 }
900
901 /* Stop recording (lock held) */
902 static inline void __stop_adc(struct i810_state *state)
903 {
904 struct dmabuf *dmabuf = &state->dmabuf;
905 struct i810_card *card = state->card;
906
907 dmabuf->enable &= ~ADC_RUNNING;
908 I810_IOWRITEB(0, card, PI_CR);
909 // wait for the card to acknowledge shutdown
910 while( I810_IOREADB(card, PI_CR) != 0 ) ;
911 // now clear any latent interrupt bits (like the halt bit)
912 if(card->pci_id == PCI_DEVICE_ID_SI_7012)
913 I810_IOWRITEB( I810_IOREADB(card, PI_PICB), card, PI_PICB );
914 else
915 I810_IOWRITEB( I810_IOREADB(card, PI_SR), card, PI_SR );
916 I810_IOWRITEL( I810_IOREADL(card, GLOB_STA) & INT_PI, card, GLOB_STA);
917 }
918
919 static void stop_adc(struct i810_state *state)
920 {
921 struct i810_card *card = state->card;
922 unsigned long flags;
923
924 spin_lock_irqsave(&card->lock, flags);
925 __stop_adc(state);
926 spin_unlock_irqrestore(&card->lock, flags);
927 }
928
929 static inline void __start_adc(struct i810_state *state)
930 {
931 struct dmabuf *dmabuf = &state->dmabuf;
932
933 if (dmabuf->count < dmabuf->dmasize && dmabuf->ready && !dmabuf->enable &&
934 (dmabuf->trigger & PCM_ENABLE_INPUT)) {
935 dmabuf->enable |= ADC_RUNNING;
936 // Interrupt enable, LVI enable, DMA enable
937 I810_IOWRITEB(0x10 | 0x04 | 0x01, state->card, PI_CR);
938 }
939 }
940
941 static void start_adc(struct i810_state *state)
942 {
943 struct i810_card *card = state->card;
944 unsigned long flags;
945
946 spin_lock_irqsave(&card->lock, flags);
947 __start_adc(state);
948 spin_unlock_irqrestore(&card->lock, flags);
949 }
950
951 /* stop playback (lock held) */
952 static inline void __stop_dac(struct i810_state *state)
953 {
954 struct dmabuf *dmabuf = &state->dmabuf;
955 struct i810_card *card = state->card;
956
957 dmabuf->enable &= ~DAC_RUNNING;
958 I810_IOWRITEB(0, card, PO_CR);
959 // wait for the card to acknowledge shutdown
960 while( I810_IOREADB(card, PO_CR) != 0 ) ;
961 // now clear any latent interrupt bits (like the halt bit)
962 if(card->pci_id == PCI_DEVICE_ID_SI_7012)
963 I810_IOWRITEB( I810_IOREADB(card, PO_PICB), card, PO_PICB );
964 else
965 I810_IOWRITEB( I810_IOREADB(card, PO_SR), card, PO_SR );
966 I810_IOWRITEL( I810_IOREADL(card, GLOB_STA) & INT_PO, card, GLOB_STA);
967 }
968
969 static void stop_dac(struct i810_state *state)
970 {
971 struct i810_card *card = state->card;
972 unsigned long flags;
973
974 spin_lock_irqsave(&card->lock, flags);
975 __stop_dac(state);
976 spin_unlock_irqrestore(&card->lock, flags);
977 }
978
979 static inline void __start_dac(struct i810_state *state)
980 {
981 struct dmabuf *dmabuf = &state->dmabuf;
982
983 if (dmabuf->count > 0 && dmabuf->ready && !dmabuf->enable &&
984 (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
985 dmabuf->enable |= DAC_RUNNING;
986 // Interrupt enable, LVI enable, DMA enable
987 I810_IOWRITEB(0x10 | 0x04 | 0x01, state->card, PO_CR);
988 }
989 }
990 static void start_dac(struct i810_state *state)
991 {
992 struct i810_card *card = state->card;
993 unsigned long flags;
994
995 spin_lock_irqsave(&card->lock, flags);
996 __start_dac(state);
997 spin_unlock_irqrestore(&card->lock, flags);
998 }
999
1000 #define DMABUF_DEFAULTORDER (16-PAGE_SHIFT)
1001 #define DMABUF_MINORDER 1
1002
1003 /* allocate DMA buffer, playback and recording buffer should be allocated separately */
1004 static int alloc_dmabuf(struct i810_state *state)
1005 {
1006 struct dmabuf *dmabuf = &state->dmabuf;
1007 void *rawbuf= NULL;
1008 int order, size;
1009 struct page *page, *pend;
1010
1011 /* If we don't have any oss frag params, then use our default ones */
1012 if(dmabuf->ossmaxfrags == 0)
1013 dmabuf->ossmaxfrags = 4;
1014 if(dmabuf->ossfragsize == 0)
1015 dmabuf->ossfragsize = (PAGE_SIZE<<DMABUF_DEFAULTORDER)/dmabuf->ossmaxfrags;
1016 size = dmabuf->ossfragsize * dmabuf->ossmaxfrags;
1017
1018 if(dmabuf->rawbuf && (PAGE_SIZE << dmabuf->buforder) == size)
1019 return 0;
1020 /* alloc enough to satisfy the oss params */
1021 for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--) {
1022 if ( (PAGE_SIZE<<order) > size )
1023 continue;
1024 if ((rawbuf = pci_alloc_consistent(state->card->pci_dev,
1025 PAGE_SIZE << order,
1026 &dmabuf->dma_handle)))
1027 break;
1028 }
1029 if (!rawbuf)
1030 return -ENOMEM;
1031
1032
1033 #ifdef DEBUG
1034 printk("i810_audio: allocated %ld (order = %d) bytes at %p\n",
1035 PAGE_SIZE << order, order, rawbuf);
1036 #endif
1037
1038 dmabuf->ready = dmabuf->mapped = 0;
1039 dmabuf->rawbuf = rawbuf;
1040 dmabuf->buforder = order;
1041
1042 /* now mark the pages as reserved; otherwise remap_pfn_range doesn't do what we want */
1043 pend = virt_to_page(rawbuf + (PAGE_SIZE << order) - 1);
1044 for (page = virt_to_page(rawbuf); page <= pend; page++)
1045 SetPageReserved(page);
1046
1047 return 0;
1048 }
1049
1050 /* free DMA buffer */
1051 static void dealloc_dmabuf(struct i810_state *state)
1052 {
1053 struct dmabuf *dmabuf = &state->dmabuf;
1054 struct page *page, *pend;
1055
1056 if (dmabuf->rawbuf) {
1057 /* undo marking the pages as reserved */
1058 pend = virt_to_page(dmabuf->rawbuf + (PAGE_SIZE << dmabuf->buforder) - 1);
1059 for (page = virt_to_page(dmabuf->rawbuf); page <= pend; page++)
1060 ClearPageReserved(page);
1061 pci_free_consistent(state->card->pci_dev, PAGE_SIZE << dmabuf->buforder,
1062 dmabuf->rawbuf, dmabuf->dma_handle);
1063 }
1064 dmabuf->rawbuf = NULL;
1065 dmabuf->mapped = dmabuf->ready = 0;
1066 }
1067
1068 static int prog_dmabuf(struct i810_state *state, unsigned rec)
1069 {
1070 struct dmabuf *dmabuf = &state->dmabuf;
1071 struct i810_channel *c;
1072 struct sg_item *sg;
1073 unsigned long flags;
1074 int ret;
1075 unsigned fragint;
1076 int i;
1077
1078 spin_lock_irqsave(&state->card->lock, flags);
1079 if(dmabuf->enable & DAC_RUNNING)
1080 __stop_dac(state);
1081 if(dmabuf->enable & ADC_RUNNING)
1082 __stop_adc(state);
1083 dmabuf->total_bytes = 0;
1084 dmabuf->count = dmabuf->error = 0;
1085 dmabuf->swptr = dmabuf->hwptr = 0;
1086 spin_unlock_irqrestore(&state->card->lock, flags);
1087
1088 /* allocate DMA buffer, let alloc_dmabuf determine if we are already
1089 * allocated well enough or if we should replace the current buffer
1090 * (assuming one is already allocated, if it isn't, then allocate it).
1091 */
1092 if ((ret = alloc_dmabuf(state)))
1093 return ret;
1094
1095 /* FIXME: figure out all this OSS fragment stuff */
1096 /* I did, it now does what it should according to the OSS API. DL */
1097 /* We may not have realloced our dmabuf, but the fragment size to
1098 * fragment number ratio may have changed, so go ahead and reprogram
1099 * things
1100 */
1101 dmabuf->dmasize = PAGE_SIZE << dmabuf->buforder;
1102 dmabuf->numfrag = SG_LEN;
1103 dmabuf->fragsize = dmabuf->dmasize/dmabuf->numfrag;
1104 dmabuf->fragsamples = dmabuf->fragsize >> 1;
1105 dmabuf->fragshift = ffs(dmabuf->fragsize) - 1;
1106 dmabuf->userfragsize = dmabuf->ossfragsize;
1107 dmabuf->userfrags = dmabuf->dmasize/dmabuf->ossfragsize;
1108
1109 memset(dmabuf->rawbuf, 0, dmabuf->dmasize);
1110
1111 if(dmabuf->ossmaxfrags == 4) {
1112 fragint = 8;
1113 } else if (dmabuf->ossmaxfrags == 8) {
1114 fragint = 4;
1115 } else if (dmabuf->ossmaxfrags == 16) {
1116 fragint = 2;
1117 } else {
1118 fragint = 1;
1119 }
1120 /*
1121 * Now set up the ring
1122 */
1123 if(dmabuf->read_channel)
1124 c = dmabuf->read_channel;
1125 else
1126 c = dmabuf->write_channel;
1127 while(c != NULL) {
1128 sg=&c->sg[0];
1129 /*
1130 * Load up 32 sg entries and take an interrupt at half
1131 * way (we might want more interrupts later..)
1132 */
1133
1134 for(i=0;i<dmabuf->numfrag;i++)
1135 {
1136 sg->busaddr=(u32)dmabuf->dma_handle+dmabuf->fragsize*i;
1137 // the card will always be doing 16bit stereo
1138 sg->control=dmabuf->fragsamples;
1139 if(state->card->pci_id == PCI_DEVICE_ID_SI_7012)
1140 sg->control <<= 1;
1141 sg->control|=CON_BUFPAD;
1142 // set us up to get IOC interrupts as often as needed to
1143 // satisfy numfrag requirements, no more
1144 if( ((i+1) % fragint) == 0) {
1145 sg->control|=CON_IOC;
1146 }
1147 sg++;
1148 }
1149 spin_lock_irqsave(&state->card->lock, flags);
1150 I810_IOWRITEB(2, state->card, c->port+OFF_CR); /* reset DMA machine */
1151 while( I810_IOREADB(state->card, c->port+OFF_CR) & 0x02 ) ;
1152 I810_IOWRITEL((u32)state->card->chandma +
1153 c->num*sizeof(struct i810_channel),
1154 state->card, c->port+OFF_BDBAR);
1155 CIV_TO_LVI(state->card, c->port, 0);
1156
1157 spin_unlock_irqrestore(&state->card->lock, flags);
1158
1159 if(c != dmabuf->write_channel)
1160 c = dmabuf->write_channel;
1161 else
1162 c = NULL;
1163 }
1164
1165 /* set the ready flag for the dma buffer */
1166 dmabuf->ready = 1;
1167
1168 #ifdef DEBUG
1169 printk("i810_audio: prog_dmabuf, sample rate = %d, format = %d,\n\tnumfrag = %d, "
1170 "fragsize = %d dmasize = %d\n",
1171 dmabuf->rate, dmabuf->fmt, dmabuf->numfrag,
1172 dmabuf->fragsize, dmabuf->dmasize);
1173 #endif
1174
1175 return 0;
1176 }
1177
1178 static void __i810_update_lvi(struct i810_state *state, int rec)
1179 {
1180 struct dmabuf *dmabuf = &state->dmabuf;
1181 int x, port;
1182 int trigger;
1183 int count, fragsize;
1184 void (*start)(struct i810_state *);
1185
1186 count = dmabuf->count;
1187 if (rec) {
1188 port = dmabuf->read_channel->port;
1189 trigger = PCM_ENABLE_INPUT;
1190 start = __start_adc;
1191 count = dmabuf->dmasize - count;
1192 } else {
1193 port = dmabuf->write_channel->port;
1194 trigger = PCM_ENABLE_OUTPUT;
1195 start = __start_dac;
1196 }
1197
1198 /* Do not process partial fragments. */
1199 fragsize = dmabuf->fragsize;
1200 if (count < fragsize)
1201 return;
1202
1203 /* if we are currently stopped, then our CIV is actually set to our
1204 * *last* sg segment and we are ready to wrap to the next. However,
1205 * if we set our LVI to the last sg segment, then it won't wrap to
1206 * the next sg segment, it won't even get a start. So, instead, when
1207 * we are stopped, we set both the LVI value and also we increment
1208 * the CIV value to the next sg segment to be played so that when
1209 * we call start, things will operate properly. Since the CIV can't
1210 * be written to directly for this purpose, we set the LVI to CIV + 1
1211 * temporarily. Once the engine has started we set the LVI to its
1212 * final value.
1213 */
1214 if (!dmabuf->enable && dmabuf->ready) {
1215 if (!(dmabuf->trigger & trigger))
1216 return;
1217
1218 CIV_TO_LVI(state->card, port, 1);
1219
1220 start(state);
1221 while (!(I810_IOREADB(state->card, port + OFF_CR) & ((1<<4) | (1<<2))))
1222 ;
1223 }
1224
1225 /* MASKP2(swptr, fragsize) - 1 is the tail of our transfer */
1226 x = MODULOP2(MASKP2(dmabuf->swptr, fragsize) - 1, dmabuf->dmasize);
1227 x >>= dmabuf->fragshift;
1228 I810_IOWRITEB(x, state->card, port + OFF_LVI);
1229 }
1230
1231 static void i810_update_lvi(struct i810_state *state, int rec)
1232 {
1233 struct dmabuf *dmabuf = &state->dmabuf;
1234 unsigned long flags;
1235
1236 if(!dmabuf->ready)
1237 return;
1238 spin_lock_irqsave(&state->card->lock, flags);
1239 __i810_update_lvi(state, rec);
1240 spin_unlock_irqrestore(&state->card->lock, flags);
1241 }
1242
1243 /* update buffer manangement pointers, especially, dmabuf->count and dmabuf->hwptr */
1244 static void i810_update_ptr(struct i810_state *state)
1245 {
1246 struct dmabuf *dmabuf = &state->dmabuf;
1247 unsigned hwptr;
1248 unsigned fragmask, dmamask;
1249 int diff;
1250
1251 fragmask = MASKP2(~0, dmabuf->fragsize);
1252 dmamask = MODULOP2(~0, dmabuf->dmasize);
1253
1254 /* error handling and process wake up for ADC */
1255 if (dmabuf->enable == ADC_RUNNING) {
1256 /* update hardware pointer */
1257 hwptr = i810_get_dma_addr(state, 1) & fragmask;
1258 diff = (hwptr - dmabuf->hwptr) & dmamask;
1259 #if defined(DEBUG_INTERRUPTS) || defined(DEBUG_MMAP)
1260 printk("ADC HWP %d,%d,%d\n", hwptr, dmabuf->hwptr, diff);
1261 #endif
1262 dmabuf->hwptr = hwptr;
1263 dmabuf->total_bytes += diff;
1264 dmabuf->count += diff;
1265 if (dmabuf->count > dmabuf->dmasize) {
1266 /* buffer underrun or buffer overrun */
1267 /* this is normal for the end of a read */
1268 /* only give an error if we went past the */
1269 /* last valid sg entry */
1270 if (GET_CIV(state->card, PI_BASE) !=
1271 GET_LVI(state->card, PI_BASE)) {
1272 printk(KERN_WARNING "i810_audio: DMA overrun on read\n");
1273 dmabuf->error++;
1274 }
1275 }
1276 if (diff)
1277 wake_up(&dmabuf->wait);
1278 }
1279 /* error handling and process wake up for DAC */
1280 if (dmabuf->enable == DAC_RUNNING) {
1281 /* update hardware pointer */
1282 hwptr = i810_get_dma_addr(state, 0) & fragmask;
1283 diff = (hwptr - dmabuf->hwptr) & dmamask;
1284 #if defined(DEBUG_INTERRUPTS) || defined(DEBUG_MMAP)
1285 printk("DAC HWP %d,%d,%d\n", hwptr, dmabuf->hwptr, diff);
1286 #endif
1287 dmabuf->hwptr = hwptr;
1288 dmabuf->total_bytes += diff;
1289 dmabuf->count -= diff;
1290 if (dmabuf->count < 0) {
1291 /* buffer underrun or buffer overrun */
1292 /* this is normal for the end of a write */
1293 /* only give an error if we went past the */
1294 /* last valid sg entry */
1295 if (GET_CIV(state->card, PO_BASE) !=
1296 GET_LVI(state->card, PO_BASE)) {
1297 printk(KERN_WARNING "i810_audio: DMA overrun on write\n");
1298 printk("i810_audio: CIV %d, LVI %d, hwptr %x, "
1299 "count %d\n",
1300 GET_CIV(state->card, PO_BASE),
1301 GET_LVI(state->card, PO_BASE),
1302 dmabuf->hwptr, dmabuf->count);
1303 dmabuf->error++;
1304 }
1305 }
1306 if (diff)
1307 wake_up(&dmabuf->wait);
1308 }
1309 }
1310
1311 static inline int i810_get_free_write_space(struct i810_state *state)
1312 {
1313 struct dmabuf *dmabuf = &state->dmabuf;
1314 int free;
1315
1316 i810_update_ptr(state);
1317 // catch underruns during playback
1318 if (dmabuf->count < 0) {
1319 dmabuf->count = 0;
1320 dmabuf->swptr = dmabuf->hwptr;
1321 }
1322 free = dmabuf->dmasize - dmabuf->count;
1323 if(free < 0)
1324 return(0);
1325 return(free);
1326 }
1327
1328 static inline int i810_get_available_read_data(struct i810_state *state)
1329 {
1330 struct dmabuf *dmabuf = &state->dmabuf;
1331 int avail;
1332
1333 i810_update_ptr(state);
1334 // catch overruns during record
1335 if (dmabuf->count > dmabuf->dmasize) {
1336 dmabuf->count = dmabuf->dmasize;
1337 dmabuf->swptr = dmabuf->hwptr;
1338 }
1339 avail = dmabuf->count;
1340 if(avail < 0)
1341 return(0);
1342 return(avail);
1343 }
1344
1345 static inline void fill_partial_frag(struct dmabuf *dmabuf)
1346 {
1347 unsigned fragsize;
1348 unsigned swptr, len;
1349
1350 fragsize = dmabuf->fragsize;
1351 swptr = dmabuf->swptr;
1352 len = fragsize - MODULOP2(dmabuf->swptr, fragsize);
1353 if (len == fragsize)
1354 return;
1355
1356 memset(dmabuf->rawbuf + swptr, '\0', len);
1357 dmabuf->swptr = MODULOP2(swptr + len, dmabuf->dmasize);
1358 dmabuf->count += len;
1359 }
1360
1361 static int drain_dac(struct i810_state *state, int signals_allowed)
1362 {
1363 DECLARE_WAITQUEUE(wait, current);
1364 struct dmabuf *dmabuf = &state->dmabuf;
1365 unsigned long flags;
1366 unsigned long tmo;
1367 int count;
1368
1369 if (!dmabuf->ready)
1370 return 0;
1371 if(dmabuf->mapped) {
1372 stop_dac(state);
1373 return 0;
1374 }
1375
1376 spin_lock_irqsave(&state->card->lock, flags);
1377
1378 fill_partial_frag(dmabuf);
1379
1380 /*
1381 * This will make sure that our LVI is correct, that our
1382 * pointer is updated, and that the DAC is running. We
1383 * have to force the setting of dmabuf->trigger to avoid
1384 * any possible deadlocks.
1385 */
1386 dmabuf->trigger = PCM_ENABLE_OUTPUT;
1387 __i810_update_lvi(state, 0);
1388
1389 spin_unlock_irqrestore(&state->card->lock, flags);
1390
1391 add_wait_queue(&dmabuf->wait, &wait);
1392 for (;;) {
1393
1394 spin_lock_irqsave(&state->card->lock, flags);
1395 i810_update_ptr(state);
1396 count = dmabuf->count;
1397
1398 /* It seems that we have to set the current state to
1399 * TASK_INTERRUPTIBLE every time to make the process
1400 * really go to sleep. This also has to be *after* the
1401 * update_ptr() call because update_ptr is likely to
1402 * do a wake_up() which will unset this before we ever
1403 * try to sleep, resuling in a tight loop in this code
1404 * instead of actually sleeping and waiting for an
1405 * interrupt to wake us up!
1406 */
1407 __set_current_state(signals_allowed ?
1408 TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
1409 spin_unlock_irqrestore(&state->card->lock, flags);
1410
1411 if (count <= 0)
1412 break;
1413
1414 if (signal_pending(current) && signals_allowed) {
1415 break;
1416 }
1417
1418 /*
1419 * set the timeout to significantly longer than it *should*
1420 * take for the DAC to drain the DMA buffer
1421 */
1422 tmo = (count * HZ) / (dmabuf->rate);
1423 if (!schedule_timeout(tmo >= 2 ? tmo : 2)){
1424 printk(KERN_ERR "i810_audio: drain_dac, dma timeout?\n");
1425 count = 0;
1426 break;
1427 }
1428 }
1429 set_current_state(TASK_RUNNING);
1430 remove_wait_queue(&dmabuf->wait, &wait);
1431 if(count > 0 && signal_pending(current) && signals_allowed)
1432 return -ERESTARTSYS;
1433 stop_dac(state);
1434 return 0;
1435 }
1436
1437 static void i810_channel_interrupt(struct i810_card *card)
1438 {
1439 int i, count;
1440
1441 #ifdef DEBUG_INTERRUPTS
1442 printk("CHANNEL ");
1443 #endif
1444 for(i=0;i<NR_HW_CH;i++)
1445 {
1446 struct i810_state *state = card->states[i];
1447 struct i810_channel *c;
1448 struct dmabuf *dmabuf;
1449 unsigned long port;
1450 u16 status;
1451
1452 if(!state)
1453 continue;
1454 if(!state->dmabuf.ready)
1455 continue;
1456 dmabuf = &state->dmabuf;
1457 if(dmabuf->enable & DAC_RUNNING) {
1458 c=dmabuf->write_channel;
1459 } else if(dmabuf->enable & ADC_RUNNING) {
1460 c=dmabuf->read_channel;
1461 } else /* This can occur going from R/W to close */
1462 continue;
1463
1464 port = c->port;
1465
1466 if(card->pci_id == PCI_DEVICE_ID_SI_7012)
1467 status = I810_IOREADW(card, port + OFF_PICB);
1468 else
1469 status = I810_IOREADW(card, port + OFF_SR);
1470
1471 #ifdef DEBUG_INTERRUPTS
1472 printk("NUM %d PORT %X IRQ ( ST%d ", c->num, c->port, status);
1473 #endif
1474 if(status & DMA_INT_COMPLETE)
1475 {
1476 /* only wake_up() waiters if this interrupt signals
1477 * us being beyond a userfragsize of data open or
1478 * available, and i810_update_ptr() does that for
1479 * us
1480 */
1481 i810_update_ptr(state);
1482 #ifdef DEBUG_INTERRUPTS
1483 printk("COMP %d ", dmabuf->hwptr /
1484 dmabuf->fragsize);
1485 #endif
1486 }
1487 if(status & (DMA_INT_LVI | DMA_INT_DCH))
1488 {
1489 /* wake_up() unconditionally on LVI and DCH */
1490 i810_update_ptr(state);
1491 wake_up(&dmabuf->wait);
1492 #ifdef DEBUG_INTERRUPTS
1493 if(status & DMA_INT_LVI)
1494 printk("LVI ");
1495 if(status & DMA_INT_DCH)
1496 printk("DCH -");
1497 #endif
1498 count = dmabuf->count;
1499 if(dmabuf->enable & ADC_RUNNING)
1500 count = dmabuf->dmasize - count;
1501 if (count >= (int)dmabuf->fragsize) {
1502 I810_IOWRITEB(I810_IOREADB(card, port+OFF_CR) | 1, card, port+OFF_CR);
1503 #ifdef DEBUG_INTERRUPTS
1504 printk(" CONTINUE ");
1505 #endif
1506 } else {
1507 if (dmabuf->enable & DAC_RUNNING)
1508 __stop_dac(state);
1509 if (dmabuf->enable & ADC_RUNNING)
1510 __stop_adc(state);
1511 dmabuf->enable = 0;
1512 #ifdef DEBUG_INTERRUPTS
1513 printk(" STOP ");
1514 #endif
1515 }
1516 }
1517 if(card->pci_id == PCI_DEVICE_ID_SI_7012)
1518 I810_IOWRITEW(status & DMA_INT_MASK, card, port + OFF_PICB);
1519 else
1520 I810_IOWRITEW(status & DMA_INT_MASK, card, port + OFF_SR);
1521 }
1522 #ifdef DEBUG_INTERRUPTS
1523 printk(")\n");
1524 #endif
1525 }
1526
1527 static irqreturn_t i810_interrupt(int irq, void *dev_id)
1528 {
1529 struct i810_card *card = dev_id;
1530 u32 status;
1531
1532 spin_lock(&card->lock);
1533
1534 status = I810_IOREADL(card, GLOB_STA);
1535
1536 if(!(status & INT_MASK))
1537 {
1538 spin_unlock(&card->lock);
1539 return IRQ_NONE; /* not for us */
1540 }
1541
1542 if(status & (INT_PO|INT_PI|INT_MC))
1543 i810_channel_interrupt(card);
1544
1545 /* clear 'em */
1546 I810_IOWRITEL(status & INT_MASK, card, GLOB_STA);
1547 spin_unlock(&card->lock);
1548 return IRQ_HANDLED;
1549 }
1550
1551 /* in this loop, dmabuf.count signifies the amount of data that is
1552 waiting to be copied to the user's buffer. It is filled by the dma
1553 machine and drained by this loop. */
1554
1555 static ssize_t i810_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
1556 {
1557 struct i810_state *state = (struct i810_state *)file->private_data;
1558 struct i810_card *card=state ? state->card : NULL;
1559 struct dmabuf *dmabuf = &state->dmabuf;
1560 ssize_t ret;
1561 unsigned long flags;
1562 unsigned int swptr;
1563 int cnt;
1564 int pending;
1565 DECLARE_WAITQUEUE(waita, current);
1566
1567 #ifdef DEBUG2
1568 printk("i810_audio: i810_read called, count = %d\n", count);
1569 #endif
1570
1571 if (dmabuf->mapped)
1572 return -ENXIO;
1573 if (dmabuf->enable & DAC_RUNNING)
1574 return -ENODEV;
1575 if (!dmabuf->read_channel) {
1576 dmabuf->ready = 0;
1577 dmabuf->read_channel = card->alloc_rec_pcm_channel(card);
1578 if (!dmabuf->read_channel) {
1579 return -EBUSY;
1580 }
1581 }
1582 if (!dmabuf->ready && (ret = prog_dmabuf(state, 1)))
1583 return ret;
1584 if (!access_ok(VERIFY_WRITE, buffer, count))
1585 return -EFAULT;
1586 ret = 0;
1587
1588 pending = 0;
1589
1590 add_wait_queue(&dmabuf->wait, &waita);
1591 while (count > 0) {
1592 set_current_state(TASK_INTERRUPTIBLE);
1593 spin_lock_irqsave(&card->lock, flags);
1594 if (PM_SUSPENDED(card)) {
1595 spin_unlock_irqrestore(&card->lock, flags);
1596 schedule();
1597 if (signal_pending(current)) {
1598 if (!ret) ret = -EAGAIN;
1599 break;
1600 }
1601 continue;
1602 }
1603 cnt = i810_get_available_read_data(state);
1604 swptr = dmabuf->swptr;
1605 // this is to make the copy_to_user simpler below
1606 if(cnt > (dmabuf->dmasize - swptr))
1607 cnt = dmabuf->dmasize - swptr;
1608 spin_unlock_irqrestore(&card->lock, flags);
1609
1610 if (cnt > count)
1611 cnt = count;
1612 if (cnt <= 0) {
1613 unsigned long tmo;
1614 /*
1615 * Don't let us deadlock. The ADC won't start if
1616 * dmabuf->trigger isn't set. A call to SETTRIGGER
1617 * could have turned it off after we set it to on
1618 * previously.
1619 */
1620 dmabuf->trigger = PCM_ENABLE_INPUT;
1621 /*
1622 * This does three things. Updates LVI to be correct,
1623 * makes sure the ADC is running, and updates the
1624 * hwptr.
1625 */
1626 i810_update_lvi(state,1);
1627 if (file->f_flags & O_NONBLOCK) {
1628 if (!ret) ret = -EAGAIN;
1629 goto done;
1630 }
1631 /* Set the timeout to how long it would take to fill
1632 * two of our buffers. If we haven't been woke up
1633 * by then, then we know something is wrong.
1634 */
1635 tmo = (dmabuf->dmasize * HZ * 2) / (dmabuf->rate * 4);
1636 /* There are two situations when sleep_on_timeout returns, one is when
1637 the interrupt is serviced correctly and the process is waked up by
1638 ISR ON TIME. Another is when timeout is expired, which means that
1639 either interrupt is NOT serviced correctly (pending interrupt) or it
1640 is TOO LATE for the process to be scheduled to run (scheduler latency)
1641 which results in a (potential) buffer overrun. And worse, there is
1642 NOTHING we can do to prevent it. */
1643 if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
1644 #ifdef DEBUG
1645 printk(KERN_ERR "i810_audio: recording schedule timeout, "
1646 "dmasz %u fragsz %u count %i hwptr %u swptr %u\n",
1647 dmabuf->dmasize, dmabuf->fragsize, dmabuf->count,
1648 dmabuf->hwptr, dmabuf->swptr);
1649 #endif
1650 /* a buffer overrun, we delay the recovery until next time the
1651 while loop begin and we REALLY have space to record */
1652 }
1653 if (signal_pending(current)) {
1654 ret = ret ? ret : -ERESTARTSYS;
1655 goto done;
1656 }
1657 continue;
1658 }
1659
1660 if (copy_to_user(buffer, dmabuf->rawbuf + swptr, cnt)) {
1661 if (!ret) ret = -EFAULT;
1662 goto done;
1663 }
1664
1665 swptr = MODULOP2(swptr + cnt, dmabuf->dmasize);
1666
1667 spin_lock_irqsave(&card->lock, flags);
1668
1669 if (PM_SUSPENDED(card)) {
1670 spin_unlock_irqrestore(&card->lock, flags);
1671 continue;
1672 }
1673 dmabuf->swptr = swptr;
1674 pending = dmabuf->count -= cnt;
1675 spin_unlock_irqrestore(&card->lock, flags);
1676
1677 count -= cnt;
1678 buffer += cnt;
1679 ret += cnt;
1680 }
1681 done:
1682 pending = dmabuf->dmasize - pending;
1683 if (dmabuf->enable || pending >= dmabuf->userfragsize)
1684 i810_update_lvi(state, 1);
1685 set_current_state(TASK_RUNNING);
1686 remove_wait_queue(&dmabuf->wait, &waita);
1687
1688 return ret;
1689 }
1690
1691 /* in this loop, dmabuf.count signifies the amount of data that is waiting to be dma to
1692 the soundcard. it is drained by the dma machine and filled by this loop. */
1693 static ssize_t i810_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
1694 {
1695 struct i810_state *state = (struct i810_state *)file->private_data;
1696 struct i810_card *card=state ? state->card : NULL;
1697 struct dmabuf *dmabuf = &state->dmabuf;
1698 ssize_t ret;
1699 unsigned long flags;
1700 unsigned int swptr = 0;
1701 int pending;
1702 int cnt;
1703 DECLARE_WAITQUEUE(waita, current);
1704
1705 #ifdef DEBUG2
1706 printk("i810_audio: i810_write called, count = %d\n", count);
1707 #endif
1708
1709 if (dmabuf->mapped)
1710 return -ENXIO;
1711 if (dmabuf->enable & ADC_RUNNING)
1712 return -ENODEV;
1713 if (!dmabuf->write_channel) {
1714 dmabuf->ready = 0;
1715 dmabuf->write_channel = card->alloc_pcm_channel(card);
1716 if(!dmabuf->write_channel)
1717 return -EBUSY;
1718 }
1719 if (!dmabuf->ready && (ret = prog_dmabuf(state, 0)))
1720 return ret;
1721 if (!access_ok(VERIFY_READ, buffer, count))
1722 return -EFAULT;
1723 ret = 0;
1724
1725 pending = 0;
1726
1727 add_wait_queue(&dmabuf->wait, &waita);
1728 while (count > 0) {
1729 set_current_state(TASK_INTERRUPTIBLE);
1730 spin_lock_irqsave(&state->card->lock, flags);
1731 if (PM_SUSPENDED(card)) {
1732 spin_unlock_irqrestore(&card->lock, flags);
1733 schedule();
1734 if (signal_pending(current)) {
1735 if (!ret) ret = -EAGAIN;
1736 break;
1737 }
1738 continue;
1739 }
1740
1741 cnt = i810_get_free_write_space(state);
1742 swptr = dmabuf->swptr;
1743 /* Bound the maximum size to how much we can copy to the
1744 * dma buffer before we hit the end. If we have more to
1745 * copy then it will get done in a second pass of this
1746 * loop starting from the beginning of the buffer.
1747 */
1748 if(cnt > (dmabuf->dmasize - swptr))
1749 cnt = dmabuf->dmasize - swptr;
1750 spin_unlock_irqrestore(&state->card->lock, flags);
1751
1752 #ifdef DEBUG2
1753 printk(KERN_INFO "i810_audio: i810_write: %d bytes available space\n", cnt);
1754 #endif
1755 if (cnt > count)
1756 cnt = count;
1757 if (cnt <= 0) {
1758 unsigned long tmo;
1759 // There is data waiting to be played
1760 /*
1761 * Force the trigger setting since we would
1762 * deadlock with it set any other way
1763 */
1764 dmabuf->trigger = PCM_ENABLE_OUTPUT;
1765 i810_update_lvi(state,0);
1766 if (file->f_flags & O_NONBLOCK) {
1767 if (!ret) ret = -EAGAIN;
1768 goto ret;
1769 }
1770 /* Not strictly correct but works */
1771 tmo = (dmabuf->dmasize * HZ * 2) / (dmabuf->rate * 4);
1772 /* There are two situations when sleep_on_timeout returns, one is when
1773 the interrupt is serviced correctly and the process is waked up by
1774 ISR ON TIME. Another is when timeout is expired, which means that
1775 either interrupt is NOT serviced correctly (pending interrupt) or it
1776 is TOO LATE for the process to be scheduled to run (scheduler latency)
1777 which results in a (potential) buffer underrun. And worse, there is
1778 NOTHING we can do to prevent it. */
1779 if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
1780 #ifdef DEBUG
1781 printk(KERN_ERR "i810_audio: playback schedule timeout, "
1782 "dmasz %u fragsz %u count %i hwptr %u swptr %u\n",
1783 dmabuf->dmasize, dmabuf->fragsize, dmabuf->count,
1784 dmabuf->hwptr, dmabuf->swptr);
1785 #endif
1786 /* a buffer underrun, we delay the recovery until next time the
1787 while loop begin and we REALLY have data to play */
1788 //return ret;
1789 }
1790 if (signal_pending(current)) {
1791 if (!ret) ret = -ERESTARTSYS;
1792 goto ret;
1793 }
1794 continue;
1795 }
1796 if (copy_from_user(dmabuf->rawbuf+swptr,buffer,cnt)) {
1797 if (!ret) ret = -EFAULT;
1798 goto ret;
1799 }
1800
1801 swptr = MODULOP2(swptr + cnt, dmabuf->dmasize);
1802
1803 spin_lock_irqsave(&state->card->lock, flags);
1804 if (PM_SUSPENDED(card)) {
1805 spin_unlock_irqrestore(&card->lock, flags);
1806 continue;
1807 }
1808
1809 dmabuf->swptr = swptr;
1810 pending = dmabuf->count += cnt;
1811
1812 count -= cnt;
1813 buffer += cnt;
1814 ret += cnt;
1815 spin_unlock_irqrestore(&state->card->lock, flags);
1816 }
1817 ret:
1818 if (dmabuf->enable || pending >= dmabuf->userfragsize)
1819 i810_update_lvi(state, 0);
1820 set_current_state(TASK_RUNNING);
1821 remove_wait_queue(&dmabuf->wait, &waita);
1822
1823 return ret;
1824 }
1825
1826 /* No kernel lock - we have our own spinlock */
1827 static unsigned int i810_poll(struct file *file, struct poll_table_struct *wait)
1828 {
1829 struct i810_state *state = (struct i810_state *)file->private_data;
1830 struct dmabuf *dmabuf = &state->dmabuf;
1831 unsigned long flags;
1832 unsigned int mask = 0;
1833
1834 if(!dmabuf->ready)
1835 return 0;
1836 poll_wait(file, &dmabuf->wait, wait);
1837 spin_lock_irqsave(&state->card->lock, flags);
1838 if (dmabuf->enable & ADC_RUNNING ||
1839 dmabuf->trigger & PCM_ENABLE_INPUT) {
1840 if (i810_get_available_read_data(state) >=
1841 (signed)dmabuf->userfragsize)
1842 mask |= POLLIN | POLLRDNORM;
1843 }
1844 if (dmabuf->enable & DAC_RUNNING ||
1845 dmabuf->trigger & PCM_ENABLE_OUTPUT) {
1846 if (i810_get_free_write_space(state) >=
1847 (signed)dmabuf->userfragsize)
1848 mask |= POLLOUT | POLLWRNORM;
1849 }
1850 spin_unlock_irqrestore(&state->card->lock, flags);
1851 return mask;
1852 }
1853
1854 static int i810_mmap(struct file *file, struct vm_area_struct *vma)
1855 {
1856 struct i810_state *state = (struct i810_state *)file->private_data;
1857 struct dmabuf *dmabuf = &state->dmabuf;
1858 int ret = -EINVAL;
1859 unsigned long size;
1860
1861 lock_kernel();
1862 if (vma->vm_flags & VM_WRITE) {
1863 if (!dmabuf->write_channel &&
1864 (dmabuf->write_channel =
1865 state->card->alloc_pcm_channel(state->card)) == NULL) {
1866 ret = -EBUSY;
1867 goto out;
1868 }
1869 }
1870 if (vma->vm_flags & VM_READ) {
1871 if (!dmabuf->read_channel &&
1872 (dmabuf->read_channel =
1873 state->card->alloc_rec_pcm_channel(state->card)) == NULL) {
1874 ret = -EBUSY;
1875 goto out;
1876 }
1877 }
1878 if ((ret = prog_dmabuf(state, 0)) != 0)
1879 goto out;
1880
1881 ret = -EINVAL;
1882 if (vma->vm_pgoff != 0)
1883 goto out;
1884 size = vma->vm_end - vma->vm_start;
1885 if (size > (PAGE_SIZE << dmabuf->buforder))
1886 goto out;
1887 ret = -EAGAIN;
1888 if (remap_pfn_range(vma, vma->vm_start,
1889 virt_to_phys(dmabuf->rawbuf) >> PAGE_SHIFT,
1890 size, vma->vm_page_prot))
1891 goto out;
1892 dmabuf->mapped = 1;
1893 dmabuf->trigger = 0;
1894 ret = 0;
1895 #ifdef DEBUG_MMAP
1896 printk("i810_audio: mmap'ed %ld bytes of data space\n", size);
1897 #endif
1898 out:
1899 unlock_kernel();
1900 return ret;
1901 }
1902
1903 static int i810_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
1904 {
1905 struct i810_state *state = (struct i810_state *)file->private_data;
1906 struct i810_channel *c = NULL;
1907 struct dmabuf *dmabuf = &state->dmabuf;
1908 unsigned long flags;
1909 audio_buf_info abinfo;
1910 count_info cinfo;
1911 unsigned int i_glob_cnt;
1912 int val = 0, ret;
1913 struct ac97_codec *codec = state->card->ac97_codec[0];
1914 void __user *argp = (void __user *)arg;
1915 int __user *p = argp;
1916
1917 #ifdef DEBUG
1918 printk("i810_audio: i810_ioctl, arg=0x%x, cmd=", arg ? *p : 0);
1919 #endif
1920
1921 switch (cmd)
1922 {
1923 case OSS_GETVERSION:
1924 #ifdef DEBUG
1925 printk("OSS_GETVERSION\n");
1926 #endif
1927 return put_user(SOUND_VERSION, p);
1928
1929 case SNDCTL_DSP_RESET:
1930 #ifdef DEBUG
1931 printk("SNDCTL_DSP_RESET\n");
1932 #endif
1933 spin_lock_irqsave(&state->card->lock, flags);
1934 if (dmabuf->enable == DAC_RUNNING) {
1935 c = dmabuf->write_channel;
1936 __stop_dac(state);
1937 }
1938 if (dmabuf->enable == ADC_RUNNING) {
1939 c = dmabuf->read_channel;
1940 __stop_adc(state);
1941 }
1942 if (c != NULL) {
1943 I810_IOWRITEB(2, state->card, c->port+OFF_CR); /* reset DMA machine */
1944 while ( I810_IOREADB(state->card, c->port+OFF_CR) & 2 )
1945 cpu_relax();
1946 I810_IOWRITEL((u32)state->card->chandma +
1947 c->num*sizeof(struct i810_channel),
1948 state->card, c->port+OFF_BDBAR);
1949 CIV_TO_LVI(state->card, c->port, 0);
1950 }
1951
1952 spin_unlock_irqrestore(&state->card->lock, flags);
1953 synchronize_irq(state->card->pci_dev->irq);
1954 dmabuf->ready = 0;
1955 dmabuf->swptr = dmabuf->hwptr = 0;
1956 dmabuf->count = dmabuf->total_bytes = 0;
1957 return 0;
1958
1959 case SNDCTL_DSP_SYNC:
1960 #ifdef DEBUG
1961 printk("SNDCTL_DSP_SYNC\n");
1962 #endif
1963 if (dmabuf->enable != DAC_RUNNING || file->f_flags & O_NONBLOCK)
1964 return 0;
1965 if((val = drain_dac(state, 1)))
1966 return val;
1967 dmabuf->total_bytes = 0;
1968 return 0;
1969
1970 case SNDCTL_DSP_SPEED: /* set smaple rate */
1971 #ifdef DEBUG
1972 printk("SNDCTL_DSP_SPEED\n");
1973 #endif
1974 if (get_user(val, p))
1975 return -EFAULT;
1976 if (val >= 0) {
1977 if (file->f_mode & FMODE_WRITE) {
1978 if ( (state->card->ac97_status & SPDIF_ON) ) { /* S/PDIF Enabled */
1979 /* AD1886 only supports 48000, need to check that */
1980 if ( i810_valid_spdif_rate ( codec, val ) ) {
1981 /* Set DAC rate */
1982 i810_set_spdif_output ( state, -1, 0 );
1983 stop_dac(state);
1984 dmabuf->ready = 0;
1985 spin_lock_irqsave(&state->card->lock, flags);
1986 i810_set_dac_rate(state, val);
1987 spin_unlock_irqrestore(&state->card->lock, flags);
1988 /* Set S/PDIF transmitter rate. */
1989 i810_set_spdif_output ( state, AC97_EA_SPSA_3_4, val );
1990 if ( ! (state->card->ac97_status & SPDIF_ON) ) {
1991 val = dmabuf->rate;
1992 }
1993 } else { /* Not a valid rate for S/PDIF, ignore it */
1994 val = dmabuf->rate;
1995 }
1996 } else {
1997 stop_dac(state);
1998 dmabuf->ready = 0;
1999 spin_lock_irqsave(&state->card->lock, flags);
2000 i810_set_dac_rate(state, val);
2001 spin_unlock_irqrestore(&state->card->lock, flags);
2002 }
2003 }
2004 if (file->f_mode & FMODE_READ) {
2005 stop_adc(state);
2006 dmabuf->ready = 0;
2007 spin_lock_irqsave(&state->card->lock, flags);
2008 i810_set_adc_rate(state, val);
2009 spin_unlock_irqrestore(&state->card->lock, flags);
2010 }
2011 }
2012 return put_user(dmabuf->rate, p);
2013
2014 case SNDCTL_DSP_STEREO: /* set stereo or mono channel */
2015 #ifdef DEBUG
2016 printk("SNDCTL_DSP_STEREO\n");
2017 #endif
2018 if (dmabuf->enable & DAC_RUNNING) {
2019 stop_dac(state);
2020 }
2021 if (dmabuf->enable & ADC_RUNNING) {
2022 stop_adc(state);
2023 }
2024 return put_user(1, p);
2025
2026 case SNDCTL_DSP_GETBLKSIZE:
2027 if (file->f_mode & FMODE_WRITE) {
2028 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)))
2029 return val;
2030 }
2031 if (file->f_mode & FMODE_READ) {
2032 if (!dmabuf->ready && (val = prog_dmabuf(state, 1)))
2033 return val;
2034 }
2035 #ifdef DEBUG
2036 printk("SNDCTL_DSP_GETBLKSIZE %d\n", dmabuf->userfragsize);
2037 #endif
2038 return put_user(dmabuf->userfragsize, p);
2039
2040 case SNDCTL_DSP_GETFMTS: /* Returns a mask of supported sample format*/
2041 #ifdef DEBUG
2042 printk("SNDCTL_DSP_GETFMTS\n");
2043 #endif
2044 return put_user(AFMT_S16_LE, p);
2045
2046 case SNDCTL_DSP_SETFMT: /* Select sample format */
2047 #ifdef DEBUG
2048 printk("SNDCTL_DSP_SETFMT\n");
2049 #endif
2050 return put_user(AFMT_S16_LE, p);
2051
2052 case SNDCTL_DSP_CHANNELS:
2053 #ifdef DEBUG
2054 printk("SNDCTL_DSP_CHANNELS\n");
2055 #endif
2056 if (get_user(val, p))
2057 return -EFAULT;
2058
2059 if (val > 0) {
2060 if (dmabuf->enable & DAC_RUNNING) {
2061 stop_dac(state);
2062 }
2063 if (dmabuf->enable & ADC_RUNNING) {
2064 stop_adc(state);
2065 }
2066 } else {
2067 return put_user(state->card->channels, p);
2068 }
2069
2070 /* ICH and ICH0 only support 2 channels */
2071 if ( state->card->pci_id == PCI_DEVICE_ID_INTEL_82801AA_5
2072 || state->card->pci_id == PCI_DEVICE_ID_INTEL_82801AB_5)
2073 return put_user(2, p);
2074
2075 /* Multi-channel support was added with ICH2. Bits in */
2076 /* Global Status and Global Control register are now */
2077 /* used to indicate this. */
2078
2079 i_glob_cnt = I810_IOREADL(state->card, GLOB_CNT);
2080
2081 /* Current # of channels enabled */
2082 if ( i_glob_cnt & 0x0100000 )
2083 ret = 4;
2084 else if ( i_glob_cnt & 0x0200000 )
2085 ret = 6;
2086 else
2087 ret = 2;
2088
2089 switch ( val ) {
2090 case 2: /* 2 channels is always supported */
2091 I810_IOWRITEL(i_glob_cnt & 0xffcfffff,
2092 state->card, GLOB_CNT);
2093 /* Do we need to change mixer settings???? */
2094 break;
2095 case 4: /* Supported on some chipsets, better check first */
2096 if ( state->card->channels >= 4 ) {
2097 I810_IOWRITEL((i_glob_cnt & 0xffcfffff) | 0x100000,
2098 state->card, GLOB_CNT);
2099 /* Do we need to change mixer settings??? */
2100 } else {
2101 val = ret;
2102 }
2103 break;
2104 case 6: /* Supported on some chipsets, better check first */
2105 if ( state->card->channels >= 6 ) {
2106 I810_IOWRITEL((i_glob_cnt & 0xffcfffff) | 0x200000,
2107 state->card, GLOB_CNT);
2108 /* Do we need to change mixer settings??? */
2109 } else {
2110 val = ret;
2111 }
2112 break;
2113 default: /* nothing else is ever supported by the chipset */
2114 val = ret;
2115 break;
2116 }
2117
2118 return put_user(val, p);
2119
2120 case SNDCTL_DSP_POST: /* the user has sent all data and is notifying us */
2121 /* we update the swptr to the end of the last sg segment then return */
2122 #ifdef DEBUG
2123 printk("SNDCTL_DSP_POST\n");
2124 #endif
2125 if(!dmabuf->ready || (dmabuf->enable != DAC_RUNNING))
2126 return 0;
2127 if((dmabuf->swptr % dmabuf->fragsize) != 0) {
2128 val = dmabuf->fragsize - (dmabuf->swptr % dmabuf->fragsize);
2129 dmabuf->swptr += val;
2130 dmabuf->count += val;
2131 }
2132 return 0;
2133
2134 case SNDCTL_DSP_SUBDIVIDE:
2135 if (dmabuf->subdivision)
2136 return -EINVAL;
2137 if (get_user(val, p))
2138 return -EFAULT;
2139 if (val != 1 && val != 2 && val != 4)
2140 return -EINVAL;
2141 #ifdef DEBUG
2142 printk("SNDCTL_DSP_SUBDIVIDE %d\n", val);
2143 #endif
2144 dmabuf->subdivision = val;
2145 dmabuf->ready = 0;
2146 return 0;
2147
2148 case SNDCTL_DSP_SETFRAGMENT:
2149 if (get_user(val, p))
2150 return -EFAULT;
2151
2152 dmabuf->ossfragsize = 1<<(val & 0xffff);
2153 dmabuf->ossmaxfrags = (val >> 16) & 0xffff;
2154 if (!dmabuf->ossfragsize || !dmabuf->ossmaxfrags)
2155 return -EINVAL;
2156 /*
2157 * Bound the frag size into our allowed range of 256 - 4096
2158 */
2159 if (dmabuf->ossfragsize < 256)
2160 dmabuf->ossfragsize = 256;
2161 else if (dmabuf->ossfragsize > 4096)
2162 dmabuf->ossfragsize = 4096;
2163 /*
2164 * The numfrags could be something reasonable, or it could
2165 * be 0xffff meaning "Give me as much as possible". So,
2166 * we check the numfrags * fragsize doesn't exceed our
2167 * 64k buffer limit, nor is it less than our 8k minimum.
2168 * If it fails either one of these checks, then adjust the
2169 * number of fragments, not the size of them. It's OK if
2170 * our number of fragments doesn't equal 32 or anything
2171 * like our hardware based number now since we are using
2172 * a different frag count for the hardware. Before we get
2173 * into this though, bound the maxfrags to avoid overflow
2174 * issues. A reasonable bound would be 64k / 256 since our
2175 * maximum buffer size is 64k and our minimum frag size is
2176 * 256. On the other end, our minimum buffer size is 8k and
2177 * our maximum frag size is 4k, so the lower bound should
2178 * be 2.
2179 */
2180
2181 if(dmabuf->ossmaxfrags > 256)
2182 dmabuf->ossmaxfrags = 256;
2183 else if (dmabuf->ossmaxfrags < 2)
2184 dmabuf->ossmaxfrags = 2;
2185
2186 val = dmabuf->ossfragsize * dmabuf->ossmaxfrags;
2187 while (val < 8192) {
2188 val <<= 1;
2189 dmabuf->ossmaxfrags <<= 1;
2190 }
2191 while (val > 65536) {
2192 val >>= 1;
2193 dmabuf->ossmaxfrags >>= 1;
2194 }
2195 dmabuf->ready = 0;
2196 #ifdef DEBUG
2197 printk("SNDCTL_DSP_SETFRAGMENT 0x%x, %d, %d\n", val,
2198 dmabuf->ossfragsize, dmabuf->ossmaxfrags);
2199 #endif
2200
2201 return 0;
2202
2203 case SNDCTL_DSP_GETOSPACE:
2204 if (!(file->f_mode & FMODE_WRITE))
2205 return -EINVAL;
2206 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
2207 return val;
2208 spin_lock_irqsave(&state->card->lock, flags);
2209 i810_update_ptr(state);
2210 abinfo.fragsize = dmabuf->userfragsize;
2211 abinfo.fragstotal = dmabuf->userfrags;
2212 if (dmabuf->mapped)
2213 abinfo.bytes = dmabuf->dmasize;
2214 else
2215 abinfo.bytes = i810_get_free_write_space(state);
2216 abinfo.fragments = abinfo.bytes / dmabuf->userfragsize;
2217 spin_unlock_irqrestore(&state->card->lock, flags);
2218 #if defined(DEBUG) || defined(DEBUG_MMAP)
2219 printk("SNDCTL_DSP_GETOSPACE %d, %d, %d, %d\n", abinfo.bytes,
2220 abinfo.fragsize, abinfo.fragments, abinfo.fragstotal);
2221 #endif
2222 return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
2223
2224 case SNDCTL_DSP_GETOPTR:
2225 if (!(file->f_mode & FMODE_WRITE))
2226 return -EINVAL;
2227 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
2228 return val;
2229 spin_lock_irqsave(&state->card->lock, flags);
2230 val = i810_get_free_write_space(state);
2231 cinfo.bytes = dmabuf->total_bytes;
2232 cinfo.ptr = dmabuf->hwptr;
2233 cinfo.blocks = val/dmabuf->userfragsize;
2234 if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
2235 dmabuf->count += val;
2236 dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
2237 __i810_update_lvi(state, 0);
2238 }
2239 spin_unlock_irqrestore(&state->card->lock, flags);
2240 #if defined(DEBUG) || defined(DEBUG_MMAP)
2241 printk("SNDCTL_DSP_GETOPTR %d, %d, %d, %d\n", cinfo.bytes,
2242 cinfo.blocks, cinfo.ptr, dmabuf->count);
2243 #endif
2244 return copy_to_user(argp, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
2245
2246 case SNDCTL_DSP_GETISPACE:
2247 if (!(file->f_mode & FMODE_READ))
2248 return -EINVAL;
2249 if (!dmabuf->ready && (val = prog_dmabuf(state, 1)) != 0)
2250 return val;
2251 spin_lock_irqsave(&state->card->lock, flags);
2252 abinfo.bytes = i810_get_available_read_data(state);
2253 abinfo.fragsize = dmabuf->userfragsize;
2254 abinfo.fragstotal = dmabuf->userfrags;
2255 abinfo.fragments = abinfo.bytes / dmabuf->userfragsize;
2256 spin_unlock_irqrestore(&state->card->lock, flags);
2257 #if defined(DEBUG) || defined(DEBUG_MMAP)
2258 printk("SNDCTL_DSP_GETISPACE %d, %d, %d, %d\n", abinfo.bytes,
2259 abinfo.fragsize, abinfo.fragments, abinfo.fragstotal);
2260 #endif
2261 return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
2262
2263 case SNDCTL_DSP_GETIPTR:
2264 if (!(file->f_mode & FMODE_READ))
2265 return -EINVAL;
2266 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
2267 return val;
2268 spin_lock_irqsave(&state->card->lock, flags);
2269 val = i810_get_available_read_data(state);
2270 cinfo.bytes = dmabuf->total_bytes;
2271 cinfo.blocks = val/dmabuf->userfragsize;
2272 cinfo.ptr = dmabuf->hwptr;
2273 if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_INPUT)) {
2274 dmabuf->count -= val;
2275 dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
2276 __i810_update_lvi(state, 1);
2277 }
2278 spin_unlock_irqrestore(&state->card->lock, flags);
2279 #if defined(DEBUG) || defined(DEBUG_MMAP)
2280 printk("SNDCTL_DSP_GETIPTR %d, %d, %d, %d\n", cinfo.bytes,
2281 cinfo.blocks, cinfo.ptr, dmabuf->count);
2282 #endif
2283 return copy_to_user(argp, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
2284
2285 case SNDCTL_DSP_NONBLOCK:
2286 #ifdef DEBUG
2287 printk("SNDCTL_DSP_NONBLOCK\n");
2288 #endif
2289 file->f_flags |= O_NONBLOCK;
2290 return 0;
2291
2292 case SNDCTL_DSP_GETCAPS:
2293 #ifdef DEBUG
2294 printk("SNDCTL_DSP_GETCAPS\n");
2295 #endif
2296 return put_user(DSP_CAP_REALTIME|DSP_CAP_TRIGGER|DSP_CAP_MMAP|DSP_CAP_BIND,
2297 p);
2298
2299 case SNDCTL_DSP_GETTRIGGER:
2300 val = 0;
2301 #ifdef DEBUG
2302 printk("SNDCTL_DSP_GETTRIGGER 0x%x\n", dmabuf->trigger);
2303 #endif
2304 return put_user(dmabuf->trigger, p);
2305
2306 case SNDCTL_DSP_SETTRIGGER:
2307 if (get_user(val, p))
2308 return -EFAULT;
2309 #if defined(DEBUG) || defined(DEBUG_MMAP)
2310 printk("SNDCTL_DSP_SETTRIGGER 0x%x\n", val);
2311 #endif
2312 /* silently ignore invalid PCM_ENABLE_xxx bits,
2313 * like the other drivers do
2314 */
2315 if (!(file->f_mode & FMODE_READ ))
2316 val &= ~PCM_ENABLE_INPUT;
2317 if (!(file->f_mode & FMODE_WRITE ))
2318 val &= ~PCM_ENABLE_OUTPUT;
2319 if((file->f_mode & FMODE_READ) && !(val & PCM_ENABLE_INPUT) && dmabuf->enable == ADC_RUNNING) {
2320 stop_adc(state);
2321 }
2322 if((file->f_mode & FMODE_WRITE) && !(val & PCM_ENABLE_OUTPUT) && dmabuf->enable == DAC_RUNNING) {
2323 stop_dac(state);
2324 }
2325 dmabuf->trigger = val;
2326 if((val & PCM_ENABLE_OUTPUT) && !(dmabuf->enable & DAC_RUNNING)) {
2327 if (!dmabuf->write_channel) {
2328 dmabuf->ready = 0;
2329 dmabuf->write_channel = state->card->alloc_pcm_channel(state->card);
2330 if (!dmabuf->write_channel)
2331 return -EBUSY;
2332 }
2333 if (!dmabuf->ready && (ret = prog_dmabuf(state, 0)))
2334 return ret;
2335 if (dmabuf->mapped) {
2336 spin_lock_irqsave(&state->card->lock, flags);
2337 i810_update_ptr(state);
2338 dmabuf->count = 0;
2339 dmabuf->swptr = dmabuf->hwptr;
2340 dmabuf->count = i810_get_free_write_space(state);
2341 dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize;
2342 spin_unlock_irqrestore(&state->card->lock, flags);
2343 }
2344 i810_update_lvi(state, 0);
2345 start_dac(state);
2346 }
2347 if((val & PCM_ENABLE_INPUT) && !(dmabuf->enable & ADC_RUNNING)) {
2348 if (!dmabuf->read_channel) {
2349 dmabuf->ready = 0;
2350 dmabuf->read_channel = state->card->alloc_rec_pcm_channel(state->card);
2351 if (!dmabuf->read_channel)
2352 return -EBUSY;
2353 }
2354 if (!dmabuf->ready && (ret = prog_dmabuf(state, 1)))
2355 return ret;
2356 if (dmabuf->mapped) {
2357 spin_lock_irqsave(&state->card->lock, flags);
2358 i810_update_ptr(state);
2359 dmabuf->swptr = dmabuf->hwptr;
2360 dmabuf->count = 0;
2361 spin_unlock_irqrestore(&state->card->lock, flags);
2362 }
2363 i810_update_lvi(state, 1);
2364 start_adc(state);
2365 }
2366 return 0;
2367
2368 case SNDCTL_DSP_SETDUPLEX:
2369 #ifdef DEBUG
2370 printk("SNDCTL_DSP_SETDUPLEX\n");
2371 #endif
2372 return -EINVAL;
2373
2374 case SNDCTL_DSP_GETODELAY:
2375 if (!(file->f_mode & FMODE_WRITE))
2376 return -EINVAL;
2377 spin_lock_irqsave(&state->card->lock, flags);
2378 i810_update_ptr(state);
2379 val = dmabuf->count;
2380 spin_unlock_irqrestore(&state->card->lock, flags);
2381 #ifdef DEBUG
2382 printk("SNDCTL_DSP_GETODELAY %d\n", dmabuf->count);
2383 #endif
2384 return put_user(val, p);
2385
2386 case SOUND_PCM_READ_RATE:
2387 #ifdef DEBUG
2388 printk("SOUND_PCM_READ_RATE %d\n", dmabuf->rate);
2389 #endif
2390 return put_user(dmabuf->rate, p);
2391
2392 case SOUND_PCM_READ_CHANNELS:
2393 #ifdef DEBUG
2394 printk("SOUND_PCM_READ_CHANNELS\n");
2395 #endif
2396 return put_user(2, p);
2397
2398 case SOUND_PCM_READ_BITS:
2399 #ifdef DEBUG
2400 printk("SOUND_PCM_READ_BITS\n");
2401 #endif
2402 return put_user(AFMT_S16_LE, p);
2403
2404 case SNDCTL_DSP_SETSPDIF: /* Set S/PDIF Control register */
2405 #ifdef DEBUG
2406 printk("SNDCTL_DSP_SETSPDIF\n");
2407 #endif
2408 if (get_user(val, p))
2409 return -EFAULT;
2410
2411 /* Check to make sure the codec supports S/PDIF transmitter */
2412
2413 if((state->card->ac97_features & 4)) {
2414 /* mask out the transmitter speed bits so the user can't set them */
2415 val &= ~0x3000;
2416
2417 /* Add the current transmitter speed bits to the passed value */
2418 ret = i810_ac97_get(codec, AC97_SPDIF_CONTROL);
2419 val |= (ret & 0x3000);
2420
2421 i810_ac97_set(codec, AC97_SPDIF_CONTROL, val);
2422 if(i810_ac97_get(codec, AC97_SPDIF_CONTROL) != val ) {
2423 printk(KERN_ERR "i810_audio: Unable to set S/PDIF configuration to 0x%04x.\n", val);
2424 return -EFAULT;
2425 }
2426 }
2427 #ifdef DEBUG
2428 else
2429 printk(KERN_WARNING "i810_audio: S/PDIF transmitter not avalible.\n");
2430 #endif
2431 return put_user(val, p);
2432
2433 case SNDCTL_DSP_GETSPDIF: /* Get S/PDIF Control register */
2434 #ifdef DEBUG
2435 printk("SNDCTL_DSP_GETSPDIF\n");
2436 #endif
2437 if (get_user(val, p))
2438 return -EFAULT;
2439
2440 /* Check to make sure the codec supports S/PDIF transmitter */
2441
2442 if(!(state->card->ac97_features & 4)) {
2443 #ifdef DEBUG
2444 printk(KERN_WARNING "i810_audio: S/PDIF transmitter not avalible.\n");
2445 #endif
2446 val = 0;
2447 } else {
2448 val = i810_ac97_get(codec, AC97_SPDIF_CONTROL);
2449 }
2450 //return put_user((val & 0xcfff), p);
2451 return put_user(val, p);
2452
2453 case SNDCTL_DSP_GETCHANNELMASK:
2454 #ifdef DEBUG
2455 printk("SNDCTL_DSP_GETCHANNELMASK\n");
2456 #endif
2457 if (get_user(val, p))
2458 return -EFAULT;
2459
2460 /* Based on AC'97 DAC support, not ICH hardware */
2461 val = DSP_BIND_FRONT;
2462 if ( state->card->ac97_features & 0x0004 )
2463 val |= DSP_BIND_SPDIF;
2464
2465 if ( state->card->ac97_features & 0x0080 )
2466 val |= DSP_BIND_SURR;
2467 if ( state->card->ac97_features & 0x0140 )
2468 val |= DSP_BIND_CENTER_LFE;
2469
2470 return put_user(val, p);
2471
2472 case SNDCTL_DSP_BIND_CHANNEL:
2473 #ifdef DEBUG
2474 printk("SNDCTL_DSP_BIND_CHANNEL\n");
2475 #endif
2476 if (get_user(val, p))
2477 return -EFAULT;
2478 if ( val == DSP_BIND_QUERY ) {
2479 val = DSP_BIND_FRONT; /* Always report this as being enabled */
2480 if ( state->card->ac97_status & SPDIF_ON )
2481 val |= DSP_BIND_SPDIF;
2482 else {
2483 if ( state->card->ac97_status & SURR_ON )
2484 val |= DSP_BIND_SURR;
2485 if ( state->card->ac97_status & CENTER_LFE_ON )
2486 val |= DSP_BIND_CENTER_LFE;
2487 }
2488 } else { /* Not a query, set it */
2489 if (!(file->f_mode & FMODE_WRITE))
2490 return -EINVAL;
2491 if ( dmabuf->enable == DAC_RUNNING ) {
2492 stop_dac(state);
2493 }
2494 if ( val & DSP_BIND_SPDIF ) { /* Turn on SPDIF */
2495 /* Ok, this should probably define what slots
2496 * to use. For now, we'll only set it to the
2497 * defaults:
2498 *
2499 * non multichannel codec maps to slots 3&4
2500 * 2 channel codec maps to slots 7&8
2501 * 4 channel codec maps to slots 6&9
2502 * 6 channel codec maps to slots 10&11
2503 *
2504 * there should be some way for the app to
2505 * select the slot assignment.
2506 */
2507
2508 i810_set_spdif_output ( state, AC97_EA_SPSA_3_4, dmabuf->rate );
2509 if ( !(state->card->ac97_status & SPDIF_ON) )
2510 val &= ~DSP_BIND_SPDIF;
2511 } else {
2512 int mask;
2513 int channels;
2514
2515 /* Turn off S/PDIF if it was on */
2516 if ( state->card->ac97_status & SPDIF_ON )
2517 i810_set_spdif_output ( state, -1, 0 );
2518
2519 mask = val & (DSP_BIND_FRONT | DSP_BIND_SURR | DSP_BIND_CENTER_LFE);
2520 switch (mask) {
2521 case DSP_BIND_FRONT:
2522 channels = 2;
2523 break;
2524 case DSP_BIND_FRONT|DSP_BIND_SURR:
2525 channels = 4;
2526 break;
2527 case DSP_BIND_FRONT|DSP_BIND_SURR|DSP_BIND_CENTER_LFE:
2528 channels = 6;
2529 break;
2530 default:
2531 val = DSP_BIND_FRONT;
2532 channels = 2;
2533 break;
2534 }
2535 i810_set_dac_channels ( state, channels );
2536
2537 /* check that they really got turned on */
2538 if (!(state->card->ac97_status & SURR_ON))
2539 val &= ~DSP_BIND_SURR;
2540 if (!(state->card->ac97_status & CENTER_LFE_ON))
2541 val &= ~DSP_BIND_CENTER_LFE;
2542 }
2543 }
2544 return put_user(val, p);
2545
2546 case SNDCTL_DSP_MAPINBUF:
2547 case SNDCTL_DSP_MAPOUTBUF:
2548 case SNDCTL_DSP_SETSYNCRO:
2549 case SOUND_PCM_WRITE_FILTER:
2550 case SOUND_PCM_READ_FILTER:
2551 #ifdef DEBUG
2552 printk("SNDCTL_* -EINVAL\n");
2553 #endif
2554 return -EINVAL;
2555 }
2556 return -EINVAL;
2557 }
2558
2559 static int i810_open(struct inode *inode, struct file *file)
2560 {
2561 int i = 0;
2562 struct i810_card *card = devs;
2563 struct i810_state *state = NULL;
2564 struct dmabuf *dmabuf = NULL;
2565
2566 /* find an avaiable virtual channel (instance of /dev/dsp) */
2567 while (card != NULL) {
2568 /*
2569 * If we are initializing and then fail, card could go
2570 * away unuexpectedly while we are in the for() loop.
2571 * So, check for card on each iteration before we check
2572 * for card->initializing to avoid a possible oops.
2573 * This usually only matters for times when the driver is
2574 * autoloaded by kmod.
2575 */
2576 for (i = 0; i < 50 && card && card->initializing; i++) {
2577 set_current_state(TASK_UNINTERRUPTIBLE);
2578 schedule_timeout(HZ/20);
2579 }
2580 for (i = 0; i < NR_HW_CH && card && !card->initializing; i++) {
2581 if (card->states[i] == NULL) {
2582 state = card->states[i] = (struct i810_state *)
2583 kzalloc(sizeof(struct i810_state), GFP_KERNEL);
2584 if (state == NULL)
2585 return -ENOMEM;
2586 dmabuf = &state->dmabuf;
2587 goto found_virt;
2588 }
2589 }
2590 card = card->next;
2591 }
2592 /* no more virtual channel avaiable */
2593 if (!state)
2594 return -ENODEV;
2595
2596 found_virt:
2597 /* initialize the virtual channel */
2598 state->virt = i;
2599 state->card = card;
2600 state->magic = I810_STATE_MAGIC;
2601 init_waitqueue_head(&dmabuf->wait);
2602 mutex_init(&state->open_mutex);
2603 file->private_data = state;
2604 dmabuf->trigger = 0;
2605
2606 /* allocate hardware channels */
2607 if(file->f_mode & FMODE_READ) {
2608 if((dmabuf->read_channel = card->alloc_rec_pcm_channel(card)) == NULL) {
2609 kfree (card->states[i]);
2610 card->states[i] = NULL;
2611 return -EBUSY;
2612 }
2613 dmabuf->trigger |= PCM_ENABLE_INPUT;
2614 i810_set_adc_rate(state, 8000);
2615 }
2616 if(file->f_mode & FMODE_WRITE) {
2617 if((dmabuf->write_channel = card->alloc_pcm_channel(card)) == NULL) {
2618 /* make sure we free the record channel allocated above */
2619 if(file->f_mode & FMODE_READ)
2620 card->free_pcm_channel(card,dmabuf->read_channel->num);
2621 kfree (card->states[i]);
2622 card->states[i] = NULL;
2623 return -EBUSY;
2624 }
2625 /* Initialize to 8kHz? What if we don't support 8kHz? */
2626 /* Let's change this to check for S/PDIF stuff */
2627
2628 dmabuf->trigger |= PCM_ENABLE_OUTPUT;
2629 if ( spdif_locked ) {
2630 i810_set_dac_rate(state, spdif_locked);
2631 i810_set_spdif_output(state, AC97_EA_SPSA_3_4, spdif_locked);
2632 } else {
2633 i810_set_dac_rate(state, 8000);
2634 /* Put the ACLink in 2 channel mode by default */
2635 i = I810_IOREADL(card, GLOB_CNT);
2636 I810_IOWRITEL(i & 0xffcfffff, card, GLOB_CNT);
2637 }
2638 }
2639
2640 /* set default sample format. According to OSS Programmer's Guide /dev/dsp
2641 should be default to unsigned 8-bits, mono, with sample rate 8kHz and
2642 /dev/dspW will accept 16-bits sample, but we don't support those so we
2643 set it immediately to stereo and 16bit, which is all we do support */
2644 dmabuf->fmt |= I810_FMT_16BIT | I810_FMT_STEREO;
2645 dmabuf->ossfragsize = 0;
2646 dmabuf->ossmaxfrags = 0;
2647 dmabuf->subdivision = 0;
2648
2649 state->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
2650
2651 return nonseekable_open(inode, file);
2652 }
2653
2654 static int i810_release(struct inode *inode, struct file *file)
2655 {
2656 struct i810_state *state = (struct i810_state *)file->private_data;
2657 struct i810_card *card = state->card;
2658 struct dmabuf *dmabuf = &state->dmabuf;
2659 unsigned long flags;
2660
2661 lock_kernel();
2662
2663 /* stop DMA state machine and free DMA buffers/channels */
2664 if(dmabuf->trigger & PCM_ENABLE_OUTPUT) {
2665 drain_dac(state, 0);
2666 }
2667 if(dmabuf->trigger & PCM_ENABLE_INPUT) {
2668 stop_adc(state);
2669 }
2670 spin_lock_irqsave(&card->lock, flags);
2671 dealloc_dmabuf(state);
2672 if (file->f_mode & FMODE_WRITE) {
2673 state->card->free_pcm_channel(state->card, dmabuf->write_channel->num);
2674 }
2675 if (file->f_mode & FMODE_READ) {
2676 state->card->free_pcm_channel(state->card, dmabuf->read_channel->num);
2677 }
2678
2679 state->card->states[state->virt] = NULL;
2680 kfree(state);
2681 spin_unlock_irqrestore(&card->lock, flags);
2682 unlock_kernel();
2683
2684 return 0;
2685 }
2686
2687 static /*const*/ struct file_operations i810_audio_fops = {
2688 .owner = THIS_MODULE,
2689 .llseek = no_llseek,
2690 .read = i810_read,
2691 .write = i810_write,
2692 .poll = i810_poll,
2693 .ioctl = i810_ioctl,
2694 .mmap = i810_mmap,
2695 .open = i810_open,
2696 .release = i810_release,
2697 };
2698
2699 /* Write AC97 codec registers */
2700
2701 static u16 i810_ac97_get_mmio(struct ac97_codec *dev, u8 reg)
2702 {
2703 struct i810_card *card = dev->private_data;
2704 int count = 100;
2705 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2706
2707 while(count-- && (readb(card->iobase_mmio + CAS) & 1))
2708 udelay(1);
2709
2710 #ifdef DEBUG_MMIO
2711 {
2712 u16 ans = readw(card->ac97base_mmio + reg_set);
2713 printk(KERN_DEBUG "i810_audio: ac97_get_mmio(%d) -> 0x%04X\n", ((int) reg_set) & 0xffff, (u32) ans);
2714 return ans;
2715 }
2716 #else
2717 return readw(card->ac97base_mmio + reg_set);
2718 #endif
2719 }
2720
2721 static u16 i810_ac97_get_io(struct ac97_codec *dev, u8 reg)
2722 {
2723 struct i810_card *card = dev->private_data;
2724 int count = 100;
2725 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2726
2727 while(count-- && (I810_IOREADB(card, CAS) & 1))
2728 udelay(1);
2729
2730 return inw(card->ac97base + reg_set);
2731 }
2732
2733 static void i810_ac97_set_mmio(struct ac97_codec *dev, u8 reg, u16 data)
2734 {
2735 struct i810_card *card = dev->private_data;
2736 int count = 100;
2737 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2738
2739 while(count-- && (readb(card->iobase_mmio + CAS) & 1))
2740 udelay(1);
2741
2742 writew(data, card->ac97base_mmio + reg_set);
2743
2744 #ifdef DEBUG_MMIO
2745 printk(KERN_DEBUG "i810_audio: ac97_set_mmio(0x%04X, %d)\n", (u32) data, ((int) reg_set) & 0xffff);
2746 #endif
2747 }
2748
2749 static void i810_ac97_set_io(struct ac97_codec *dev, u8 reg, u16 data)
2750 {
2751 struct i810_card *card = dev->private_data;
2752 int count = 100;
2753 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2754
2755 while(count-- && (I810_IOREADB(card, CAS) & 1))
2756 udelay(1);
2757
2758 outw(data, card->ac97base + reg_set);
2759 }
2760
2761 static u16 i810_ac97_get(struct ac97_codec *dev, u8 reg)
2762 {
2763 struct i810_card *card = dev->private_data;
2764 u16 ret;
2765
2766 spin_lock(&card->ac97_lock);
2767 if (card->use_mmio) {
2768 ret = i810_ac97_get_mmio(dev, reg);
2769 }
2770 else {
2771 ret = i810_ac97_get_io(dev, reg);
2772 }
2773 spin_unlock(&card->ac97_lock);
2774
2775 return ret;
2776 }
2777
2778 static void i810_ac97_set(struct ac97_codec *dev, u8 reg, u16 data)
2779 {
2780 struct i810_card *card = dev->private_data;
2781
2782 spin_lock(&card->ac97_lock);
2783 if (card->use_mmio) {
2784 i810_ac97_set_mmio(dev, reg, data);
2785 }
2786 else {
2787 i810_ac97_set_io(dev, reg, data);
2788 }
2789 spin_unlock(&card->ac97_lock);
2790 }
2791
2792
2793 /* OSS /dev/mixer file operation methods */
2794
2795 static int i810_open_mixdev(struct inode *inode, struct file *file)
2796 {
2797 int i;
2798 int minor = iminor(inode);
2799 struct i810_card *card = devs;
2800
2801 for (card = devs; card != NULL; card = card->next) {
2802 /*
2803 * If we are initializing and then fail, card could go
2804 * away unuexpectedly while we are in the for() loop.
2805 * So, check for card on each iteration before we check
2806 * for card->initializing to avoid a possible oops.
2807 * This usually only matters for times when the driver is
2808 * autoloaded by kmod.
2809 */
2810 for (i = 0; i < 50 && card && card->initializing; i++) {
2811 set_current_state(TASK_UNINTERRUPTIBLE);
2812 schedule_timeout(HZ/20);
2813 }
2814 for (i = 0; i < NR_AC97 && card && !card->initializing; i++)
2815 if (card->ac97_codec[i] != NULL &&
2816 card->ac97_codec[i]->dev_mixer == minor) {
2817 file->private_data = card->ac97_codec[i];
2818 return nonseekable_open(inode, file);
2819 }
2820 }
2821 return -ENODEV;
2822 }
2823
2824 static int i810_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd,
2825 unsigned long arg)
2826 {
2827 struct ac97_codec *codec = (struct ac97_codec *)file->private_data;
2828
2829 return codec->mixer_ioctl(codec, cmd, arg);
2830 }
2831
2832 static /*const*/ struct file_operations i810_mixer_fops = {
2833 .owner = THIS_MODULE,
2834 .llseek = no_llseek,
2835 .ioctl = i810_ioctl_mixdev,
2836 .open = i810_open_mixdev,
2837 };
2838
2839 /* AC97 codec initialisation. These small functions exist so we don't
2840 duplicate code between module init and apm resume */
2841
2842 static inline int i810_ac97_exists(struct i810_card *card, int ac97_number)
2843 {
2844 u32 reg = I810_IOREADL(card, GLOB_STA);
2845 switch (ac97_number) {
2846 case 0:
2847 return reg & (1<<8);
2848 case 1:
2849 return reg & (1<<9);
2850 case 2:
2851 return reg & (1<<28);
2852 }
2853 return 0;
2854 }
2855
2856 static inline int i810_ac97_enable_variable_rate(struct ac97_codec *codec)
2857 {
2858 i810_ac97_set(codec, AC97_EXTENDED_STATUS, 9);
2859 i810_ac97_set(codec,AC97_EXTENDED_STATUS,
2860 i810_ac97_get(codec, AC97_EXTENDED_STATUS)|0xE800);
2861
2862 return (i810_ac97_get(codec, AC97_EXTENDED_STATUS)&1);
2863 }
2864
2865
2866 static int i810_ac97_probe_and_powerup(struct i810_card *card,struct ac97_codec *codec)
2867 {
2868 /* Returns 0 on failure */
2869 int i;
2870
2871 if (ac97_probe_codec(codec) == 0) return 0;
2872
2873 /* power it all up */
2874 i810_ac97_set(codec, AC97_POWER_CONTROL,
2875 i810_ac97_get(codec, AC97_POWER_CONTROL) & ~0x7f00);
2876
2877 /* wait for analog ready */
2878 for (i=100; i && ((i810_ac97_get(codec, AC97_POWER_CONTROL) & 0xf) != 0xf); i--)
2879 {
2880 set_current_state(TASK_UNINTERRUPTIBLE);
2881 schedule_timeout(HZ/20);
2882 }
2883 return i;
2884 }
2885
2886 static int is_new_ich(u16 pci_id)
2887 {
2888 switch (pci_id) {
2889 case PCI_DEVICE_ID_INTEL_82801DB_5:
2890 case PCI_DEVICE_ID_INTEL_82801EB_5:
2891 case PCI_DEVICE_ID_INTEL_ESB_5:
2892 case PCI_DEVICE_ID_INTEL_ICH6_18:
2893 return 1;
2894 default:
2895 break;
2896 }
2897
2898 return 0;
2899 }
2900
2901 static inline int ich_use_mmio(struct i810_card *card)
2902 {
2903 return is_new_ich(card->pci_id) && card->use_mmio;
2904 }
2905
2906 /**
2907 * i810_ac97_power_up_bus - bring up AC97 link
2908 * @card : ICH audio device to power up
2909 *
2910 * Bring up the ACLink AC97 codec bus
2911 */
2912
2913 static int i810_ac97_power_up_bus(struct i810_card *card)
2914 {
2915 u32 reg = I810_IOREADL(card, GLOB_CNT);
2916 int i;
2917 int primary_codec_id = 0;
2918
2919 if((reg&2)==0) /* Cold required */
2920 reg|=2;
2921 else
2922 reg|=4; /* Warm */
2923
2924 reg&=~8; /* ACLink on */
2925
2926 /* At this point we deassert AC_RESET # */
2927 I810_IOWRITEL(reg , card, GLOB_CNT);
2928
2929 /* We must now allow time for the Codec initialisation.
2930 600mS is the specified time */
2931
2932 for(i=0;i<10;i++)
2933 {
2934 if((I810_IOREADL(card, GLOB_CNT)&4)==0)
2935 break;
2936
2937 set_current_state(TASK_UNINTERRUPTIBLE);
2938 schedule_timeout(HZ/20);
2939 }
2940 if(i==10)
2941 {
2942 printk(KERN_ERR "i810_audio: AC'97 reset failed.\n");
2943 return 0;
2944 }
2945
2946 set_current_state(TASK_UNINTERRUPTIBLE);
2947 schedule_timeout(HZ/2);
2948
2949 /*
2950 * See if the primary codec comes ready. This must happen
2951 * before we start doing DMA stuff
2952 */
2953 /* see i810_ac97_init for the next 10 lines (jsaw) */
2954 if (card->use_mmio)
2955 readw(card->ac97base_mmio);
2956 else
2957 inw(card->ac97base);
2958 if (ich_use_mmio(card)) {
2959 primary_codec_id = (int) readl(card->iobase_mmio + SDM) & 0x3;
2960 printk(KERN_INFO "i810_audio: Primary codec has ID %d\n",
2961 primary_codec_id);
2962 }
2963
2964 if(! i810_ac97_exists(card, primary_codec_id))
2965 {
2966 printk(KERN_INFO "i810_audio: Codec not ready.. wait.. ");
2967 set_current_state(TASK_UNINTERRUPTIBLE);
2968 schedule_timeout(HZ); /* actually 600mS by the spec */
2969
2970 if(i810_ac97_exists(card, primary_codec_id))
2971 printk("OK\n");
2972 else
2973 printk("no response.\n");
2974 }
2975 if (card->use_mmio)
2976 readw(card->ac97base_mmio);
2977 else
2978 inw(card->ac97base);
2979 return 1;
2980 }
2981
2982 static int __devinit i810_ac97_init(struct i810_card *card)
2983 {
2984 int num_ac97 = 0;
2985 int ac97_id;
2986 int total_channels = 0;
2987 int nr_ac97_max = card_cap[card->pci_id_internal].nr_ac97;
2988 struct ac97_codec *codec;
2989 u16 eid;
2990 u32 reg;
2991
2992 if(!i810_ac97_power_up_bus(card)) return 0;
2993
2994 /* Number of channels supported */
2995 /* What about the codec? Just because the ICH supports */
2996 /* multiple channels doesn't mean the codec does. */
2997 /* we'll have to modify this in the codec section below */
2998 /* to reflect what the codec has. */
2999 /* ICH and ICH0 only support 2 channels so don't bother */
3000 /* to check.... */
3001
3002 card->channels = 2;
3003 reg = I810_IOREADL(card, GLOB_STA);
3004 if ( reg & 0x0200000 )
3005 card->channels = 6;
3006 else if ( reg & 0x0100000 )
3007 card->channels = 4;
3008 printk(KERN_INFO "i810_audio: Audio Controller supports %d channels.\n", card->channels);
3009 printk(KERN_INFO "i810_audio: Defaulting to base 2 channel mode.\n");
3010 reg = I810_IOREADL(card, GLOB_CNT);
3011 I810_IOWRITEL(reg & 0xffcfffff, card, GLOB_CNT);
3012
3013 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++)
3014 card->ac97_codec[num_ac97] = NULL;
3015
3016 /*@FIXME I don't know, if I'm playing to safe here... (jsaw) */
3017 if ((nr_ac97_max > 2) && !card->use_mmio) nr_ac97_max = 2;
3018
3019 for (num_ac97 = 0; num_ac97 < nr_ac97_max; num_ac97++) {
3020 /* codec reset */
3021 printk(KERN_INFO "i810_audio: Resetting connection %d\n", num_ac97);
3022 if (card->use_mmio)
3023 readw(card->ac97base_mmio + 0x80*num_ac97);
3024 else
3025 inw(card->ac97base + 0x80*num_ac97);
3026
3027 /* If we have the SDATA_IN Map Register, as on ICH4, we
3028 do not loop thru all possible codec IDs but thru all
3029 possible IO channels. Bit 0:1 of SDM then holds the
3030 last codec ID spoken to.
3031 */
3032 if (ich_use_mmio(card)) {
3033 ac97_id = (int) readl(card->iobase_mmio + SDM) & 0x3;
3034 printk(KERN_INFO "i810_audio: Connection %d with codec id %d\n",
3035 num_ac97, ac97_id);
3036 }
3037 else {
3038 ac97_id = num_ac97;
3039 }
3040
3041 /* The ICH programmer's reference says you should */
3042 /* check the ready status before probing. So we chk */
3043 /* What do we do if it's not ready? Wait and try */
3044 /* again, or abort? */
3045 if (!i810_ac97_exists(card, ac97_id)) {
3046 if(num_ac97 == 0)
3047 printk(KERN_ERR "i810_audio: Primary codec not ready.\n");
3048 }
3049
3050 if ((codec = ac97_alloc_codec()) == NULL)
3051 return -ENOMEM;
3052
3053 /* initialize some basic codec information, other fields will be filled
3054 in ac97_probe_codec */
3055 codec->private_data = card;
3056 codec->id = ac97_id;
3057 card->ac97_id_map[ac97_id] = num_ac97 * 0x80;
3058
3059 if (card->use_mmio) {
3060 codec->codec_read = i810_ac97_get_mmio;
3061 codec->codec_write = i810_ac97_set_mmio;
3062 }
3063 else {
3064 codec->codec_read = i810_ac97_get_io;
3065 codec->codec_write = i810_ac97_set_io;
3066 }
3067
3068 if(!i810_ac97_probe_and_powerup(card,codec)) {
3069 printk(KERN_ERR "i810_audio: timed out waiting for codec %d analog ready.\n", ac97_id);
3070 ac97_release_codec(codec);
3071 break; /* it didn't work */
3072 }
3073 /* Store state information about S/PDIF transmitter */
3074 card->ac97_status = 0;
3075
3076 /* Don't attempt to get eid until powerup is complete */
3077 eid = i810_ac97_get(codec, AC97_EXTENDED_ID);
3078
3079 if(eid==0xFFFF)
3080 {
3081 printk(KERN_WARNING "i810_audio: no codec attached ?\n");
3082 ac97_release_codec(codec);
3083 break;
3084 }
3085
3086 /* Check for an AC97 1.0 soft modem (ID1) */
3087
3088 if(codec->modem)
3089 {
3090 printk(KERN_WARNING "i810_audio: codec %d is a softmodem - skipping.\n", ac97_id);
3091 ac97_release_codec(codec);
3092 continue;
3093 }
3094
3095 card->ac97_features = eid;
3096
3097 /* Now check the codec for useful features to make up for
3098 the dumbness of the 810 hardware engine */
3099
3100 if(!(eid&0x0001))
3101 printk(KERN_WARNING "i810_audio: only 48Khz playback available.\n");
3102 else
3103 {
3104 if(!i810_ac97_enable_variable_rate(codec)) {
3105 printk(KERN_WARNING "i810_audio: Codec refused to allow VRA, using 48Khz only.\n");
3106 card->ac97_features&=~1;
3107 }
3108 }
3109
3110 /* Turn on the amplifier */
3111
3112 codec->codec_write(codec, AC97_POWER_CONTROL,
3113 codec->codec_read(codec, AC97_POWER_CONTROL) & ~0x8000);
3114
3115 /* Determine how many channels the codec(s) support */
3116 /* - The primary codec always supports 2 */
3117 /* - If the codec supports AMAP, surround DACs will */
3118 /* automaticlly get assigned to slots. */
3119 /* * Check for surround DACs and increment if */
3120 /* found. */
3121 /* - Else check if the codec is revision 2.2 */
3122 /* * If surround DACs exist, assign them to slots */
3123 /* and increment channel count. */
3124
3125 /* All of this only applies to ICH2 and above. ICH */
3126 /* and ICH0 only support 2 channels. ICH2 will only */
3127 /* support multiple codecs in a "split audio" config. */
3128 /* as described above. */
3129
3130 /* TODO: Remove all the debugging messages! */
3131
3132 if((eid & 0xc000) == 0) /* primary codec */
3133 total_channels += 2;
3134
3135 if(eid & 0x200) { /* GOOD, AMAP support */
3136 if (eid & 0x0080) /* L/R Surround channels */
3137 total_channels += 2;
3138 if (eid & 0x0140) /* LFE and Center channels */
3139 total_channels += 2;
3140 printk("i810_audio: AC'97 codec %d supports AMAP, total channels = %d\n", ac97_id, total_channels);
3141 } else if (eid & 0x0400) { /* this only works on 2.2 compliant codecs */
3142 eid &= 0xffcf;
3143 if((eid & 0xc000) != 0) {
3144 switch ( total_channels ) {
3145 case 2:
3146 /* Set dsa1, dsa0 to 01 */
3147 eid |= 0x0010;
3148 break;
3149 case 4:
3150 /* Set dsa1, dsa0 to 10 */
3151 eid |= 0x0020;
3152 break;
3153 case 6:
3154 /* Set dsa1, dsa0 to 11 */
3155 eid |= 0x0030;
3156 break;
3157 }
3158 total_channels += 2;
3159 }
3160 i810_ac97_set(codec, AC97_EXTENDED_ID, eid);
3161 eid = i810_ac97_get(codec, AC97_EXTENDED_ID);
3162 printk("i810_audio: AC'97 codec %d, new EID value = 0x%04x\n", ac97_id, eid);
3163 if (eid & 0x0080) /* L/R Surround channels */
3164 total_channels += 2;
3165 if (eid & 0x0140) /* LFE and Center channels */
3166 total_channels += 2;
3167 printk("i810_audio: AC'97 codec %d, DAC map configured, total channels = %d\n", ac97_id, total_channels);
3168 } else {
3169 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);
3170 }
3171
3172 if ((codec->dev_mixer = register_sound_mixer(&i810_mixer_fops, -1)) < 0) {
3173 printk(KERN_ERR "i810_audio: couldn't register mixer!\n");
3174 ac97_release_codec(codec);
3175 break;
3176 }
3177
3178 card->ac97_codec[num_ac97] = codec;
3179 }
3180
3181 /* tune up the primary codec */
3182 ac97_tune_hardware(card->pci_dev, ac97_quirks, ac97_quirk);
3183
3184 /* pick the minimum of channels supported by ICHx or codec(s) */
3185 card->channels = (card->channels > total_channels)?total_channels:card->channels;
3186
3187 return num_ac97;
3188 }
3189
3190 static void __devinit i810_configure_clocking (void)
3191 {
3192 struct i810_card *card;
3193 struct i810_state *state;
3194 struct dmabuf *dmabuf;
3195 unsigned int i, offset, new_offset;
3196 unsigned long flags;
3197
3198 card = devs;
3199 /* We could try to set the clocking for multiple cards, but can you even have
3200 * more than one i810 in a machine? Besides, clocking is global, so unless
3201 * someone actually thinks more than one i810 in a machine is possible and
3202 * decides to rewrite that little bit, setting the rate for more than one card
3203 * is a waste of time.
3204 */
3205 if(card != NULL) {
3206 state = card->states[0] = (struct i810_state *)
3207 kzalloc(sizeof(struct i810_state), GFP_KERNEL);
3208 if (state == NULL)
3209 return;
3210 dmabuf = &state->dmabuf;
3211
3212 dmabuf->write_channel = card->alloc_pcm_channel(card);
3213 state->virt = 0;
3214 state->card = card;
3215 state->magic = I810_STATE_MAGIC;
3216 init_waitqueue_head(&dmabuf->wait);
3217 mutex_init(&state->open_mutex);
3218 dmabuf->fmt = I810_FMT_STEREO | I810_FMT_16BIT;
3219 dmabuf->trigger = PCM_ENABLE_OUTPUT;
3220 i810_set_spdif_output(state, -1, 0);
3221 i810_set_dac_channels(state, 2);
3222 i810_set_dac_rate(state, 48000);
3223 if(prog_dmabuf(state, 0) != 0) {
3224 goto config_out_nodmabuf;
3225 }
3226 if(dmabuf->dmasize < 16384) {
3227 goto config_out;
3228 }
3229 dmabuf->count = dmabuf->dmasize;
3230 CIV_TO_LVI(card, dmabuf->write_channel->port, -1);
3231 local_irq_save(flags);
3232 start_dac(state);
3233 offset = i810_get_dma_addr(state, 0);
3234 mdelay(50);
3235 new_offset = i810_get_dma_addr(state, 0);
3236 stop_dac(state);
3237 local_irq_restore(flags);
3238 i = new_offset - offset;
3239 #ifdef DEBUG_INTERRUPTS
3240 printk("i810_audio: %d bytes in 50 milliseconds\n", i);
3241 #endif
3242 if(i == 0)
3243 goto config_out;
3244 i = i / 4 * 20;
3245 if (i > 48500 || i < 47500) {
3246 clocking = clocking * clocking / i;
3247 printk("i810_audio: setting clocking to %d\n", clocking);
3248 }
3249 config_out:
3250 dealloc_dmabuf(state);
3251 config_out_nodmabuf:
3252 state->card->free_pcm_channel(state->card,state->dmabuf.write_channel->num);
3253 kfree(state);
3254 card->states[0] = NULL;
3255 }
3256 }
3257
3258 /* install the driver, we do not allocate hardware channel nor DMA buffer now, they are defered
3259 until "ACCESS" time (in prog_dmabuf called by open/read/write/ioctl/mmap) */
3260
3261 static int __devinit i810_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
3262 {
3263 struct i810_card *card;
3264
3265 if (pci_enable_device(pci_dev))
3266 return -EIO;
3267
3268 if (pci_set_dma_mask(pci_dev, I810_DMA_MASK)) {
3269 printk(KERN_ERR "i810_audio: architecture does not support"
3270 " 32bit PCI busmaster DMA\n");
3271 return -ENODEV;
3272 }
3273
3274 if ((card = kzalloc(sizeof(struct i810_card), GFP_KERNEL)) == NULL) {
3275 printk(KERN_ERR "i810_audio: out of memory\n");
3276 return -ENOMEM;
3277 }
3278
3279 card->initializing = 1;
3280 card->pci_dev = pci_dev;
3281 card->pci_id = pci_id->device;
3282 card->ac97base = pci_resource_start (pci_dev, 0);
3283 card->iobase = pci_resource_start (pci_dev, 1);
3284
3285 if (!(card->ac97base) || !(card->iobase)) {
3286 card->ac97base = 0;
3287 card->iobase = 0;
3288 }
3289
3290 /* if chipset could have mmio capability, check it */
3291 if (card_cap[pci_id->driver_data].flags & CAP_MMIO) {
3292 card->ac97base_mmio_phys = pci_resource_start (pci_dev, 2);
3293 card->iobase_mmio_phys = pci_resource_start (pci_dev, 3);
3294
3295 if ((card->ac97base_mmio_phys) && (card->iobase_mmio_phys)) {
3296 card->use_mmio = 1;
3297 }
3298 else {
3299 card->ac97base_mmio_phys = 0;
3300 card->iobase_mmio_phys = 0;
3301 }
3302 }
3303
3304 if (!(card->use_mmio) && (!(card->iobase) || !(card->ac97base))) {
3305 printk(KERN_ERR "i810_audio: No I/O resources available.\n");
3306 goto out_mem;
3307 }
3308
3309 card->irq = pci_dev->irq;
3310 card->next = devs;
3311 card->magic = I810_CARD_MAGIC;
3312 #ifdef CONFIG_PM
3313 card->pm_suspended=0;
3314 #endif
3315 spin_lock_init(&card->lock);
3316 spin_lock_init(&card->ac97_lock);
3317 devs = card;
3318
3319 pci_set_master(pci_dev);
3320
3321 printk(KERN_INFO "i810: %s found at IO 0x%04lx and 0x%04lx, "
3322 "MEM 0x%04lx and 0x%04lx, IRQ %d\n",
3323 card_names[pci_id->driver_data],
3324 card->iobase, card->ac97base,
3325 card->ac97base_mmio_phys, card->iobase_mmio_phys,
3326 card->irq);
3327
3328 card->alloc_pcm_channel = i810_alloc_pcm_channel;
3329 card->alloc_rec_pcm_channel = i810_alloc_rec_pcm_channel;
3330 card->alloc_rec_mic_channel = i810_alloc_rec_mic_channel;
3331 card->free_pcm_channel = i810_free_pcm_channel;
3332
3333 if ((card->channel = pci_alloc_consistent(pci_dev,
3334 sizeof(struct i810_channel)*NR_HW_CH, &card->chandma)) == NULL) {
3335 printk(KERN_ERR "i810: cannot allocate channel DMA memory\n");
3336 goto out_mem;
3337 }
3338
3339 { /* We may dispose of this altogether some time soon, so... */
3340 struct i810_channel *cp = card->channel;
3341
3342 cp[0].offset = 0;
3343 cp[0].port = 0x00;
3344 cp[0].num = 0;
3345 cp[1].offset = 0;
3346 cp[1].port = 0x10;
3347 cp[1].num = 1;
3348 cp[2].offset = 0;
3349 cp[2].port = 0x20;
3350 cp[2].num = 2;
3351 }
3352
3353 /* claim our iospace and irq */
3354 if (!request_region(card->iobase, 64, card_names[pci_id->driver_data])) {
3355 printk(KERN_ERR "i810_audio: unable to allocate region %lx\n", card->iobase);
3356 goto out_region1;
3357 }
3358 if (!request_region(card->ac97base, 256, card_names[pci_id->driver_data])) {
3359 printk(KERN_ERR "i810_audio: unable to allocate region %lx\n", card->ac97base);
3360 goto out_region2;
3361 }
3362
3363 if (card->use_mmio) {
3364 if (request_mem_region(card->ac97base_mmio_phys, 512, "ich_audio MMBAR")) {
3365 if ((card->ac97base_mmio = ioremap(card->ac97base_mmio_phys, 512))) { /*@FIXME can ioremap fail? don't know (jsaw) */
3366 if (request_mem_region(card->iobase_mmio_phys, 256, "ich_audio MBBAR")) {
3367 if ((card->iobase_mmio = ioremap(card->iobase_mmio_phys, 256))) {
3368 printk(KERN_INFO "i810: %s mmio at 0x%04lx and 0x%04lx\n",
3369 card_names[pci_id->driver_data],
3370 (unsigned long) card->ac97base_mmio,
3371 (unsigned long) card->iobase_mmio);
3372 }
3373 else {
3374 iounmap(card->ac97base_mmio);
3375 release_mem_region(card->ac97base_mmio_phys, 512);
3376 release_mem_region(card->iobase_mmio_phys, 512);
3377 card->use_mmio = 0;
3378 }
3379 }
3380 else {
3381 iounmap(card->ac97base_mmio);
3382 release_mem_region(card->ac97base_mmio_phys, 512);
3383 card->use_mmio = 0;
3384 }
3385 }
3386 }
3387 else {
3388 card->use_mmio = 0;
3389 }
3390 }
3391
3392 /* initialize AC97 codec and register /dev/mixer */
3393 if (i810_ac97_init(card) <= 0)
3394 goto out_iospace;
3395 pci_set_drvdata(pci_dev, card);
3396
3397 if(clocking == 0) {
3398 clocking = 48000;
3399 i810_configure_clocking();
3400 }
3401
3402 /* register /dev/dsp */
3403 if ((card->dev_audio = register_sound_dsp(&i810_audio_fops, -1)) < 0) {
3404 int i;
3405 printk(KERN_ERR "i810_audio: couldn't register DSP device!\n");
3406 for (i = 0; i < NR_AC97; i++)
3407 if (card->ac97_codec[i] != NULL) {
3408 unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
3409 ac97_release_codec(card->ac97_codec[i]);
3410 }
3411 goto out_iospace;
3412 }
3413
3414 if (request_irq(card->irq, &i810_interrupt, IRQF_SHARED,
3415 card_names[pci_id->driver_data], card)) {
3416 printk(KERN_ERR "i810_audio: unable to allocate irq %d\n", card->irq);
3417 goto out_iospace;
3418 }
3419
3420
3421 card->initializing = 0;
3422 return 0;
3423
3424 out_iospace:
3425 if (card->use_mmio) {
3426 iounmap(card->ac97base_mmio);
3427 iounmap(card->iobase_mmio);
3428 release_mem_region(card->ac97base_mmio_phys, 512);
3429 release_mem_region(card->iobase_mmio_phys, 256);
3430 }
3431 release_region(card->ac97base, 256);
3432 out_region2:
3433 release_region(card->iobase, 64);
3434 out_region1:
3435 pci_free_consistent(pci_dev, sizeof(struct i810_channel)*NR_HW_CH,
3436 card->channel, card->chandma);
3437 out_mem:
3438 kfree(card);
3439 return -ENODEV;
3440 }
3441
3442 static void __devexit i810_remove(struct pci_dev *pci_dev)
3443 {
3444 int i;
3445 struct i810_card *card = pci_get_drvdata(pci_dev);
3446 /* free hardware resources */
3447 free_irq(card->irq, devs);
3448 release_region(card->iobase, 64);
3449 release_region(card->ac97base, 256);
3450 pci_free_consistent(pci_dev, sizeof(struct i810_channel)*NR_HW_CH,
3451 card->channel, card->chandma);
3452 if (card->use_mmio) {
3453 iounmap(card->ac97base_mmio);
3454 iounmap(card->iobase_mmio);
3455 release_mem_region(card->ac97base_mmio_phys, 512);
3456 release_mem_region(card->iobase_mmio_phys, 256);
3457 }
3458
3459 /* unregister audio devices */
3460 for (i = 0; i < NR_AC97; i++)
3461 if (card->ac97_codec[i] != NULL) {
3462 unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
3463 ac97_release_codec(card->ac97_codec[i]);
3464 card->ac97_codec[i] = NULL;
3465 }
3466 unregister_sound_dsp(card->dev_audio);
3467 kfree(card);
3468 }
3469
3470 #ifdef CONFIG_PM
3471 static int i810_pm_suspend(struct pci_dev *dev, pm_message_t pm_state)
3472 {
3473 struct i810_card *card = pci_get_drvdata(dev);
3474 struct i810_state *state;
3475 unsigned long flags;
3476 struct dmabuf *dmabuf;
3477 int i,num_ac97;
3478 #ifdef DEBUG
3479 printk("i810_audio: i810_pm_suspend called\n");
3480 #endif
3481 if(!card) return 0;
3482 spin_lock_irqsave(&card->lock, flags);
3483 card->pm_suspended=1;
3484 for(i=0;i<NR_HW_CH;i++) {
3485 state = card->states[i];
3486 if(!state) continue;
3487 /* this happens only if there are open files */
3488 dmabuf = &state->dmabuf;
3489 if(dmabuf->enable & DAC_RUNNING ||
3490 (dmabuf->count && (dmabuf->trigger & PCM_ENABLE_OUTPUT))) {
3491 state->pm_saved_dac_rate=dmabuf->rate;
3492 stop_dac(state);
3493 } else {
3494 state->pm_saved_dac_rate=0;
3495 }
3496 if(dmabuf->enable & ADC_RUNNING) {
3497 state->pm_saved_adc_rate=dmabuf->rate;
3498 stop_adc(state);
3499 } else {
3500 state->pm_saved_adc_rate=0;
3501 }
3502 dmabuf->ready = 0;
3503 dmabuf->swptr = dmabuf->hwptr = 0;
3504 dmabuf->count = dmabuf->total_bytes = 0;
3505 }
3506
3507 spin_unlock_irqrestore(&card->lock, flags);
3508
3509 /* save mixer settings */
3510 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
3511 struct ac97_codec *codec = card->ac97_codec[num_ac97];
3512 if(!codec) continue;
3513 for(i=0;i< SOUND_MIXER_NRDEVICES ;i++) {
3514 if((supported_mixer(codec,i)) &&
3515 (codec->read_mixer)) {
3516 card->pm_saved_mixer_settings[i][num_ac97]=
3517 codec->read_mixer(codec,i);
3518 }
3519 }
3520 }
3521 pci_save_state(dev); /* XXX do we need this? */
3522 pci_disable_device(dev); /* disable busmastering */
3523 pci_set_power_state(dev,3); /* Zzz. */
3524
3525 return 0;
3526 }
3527
3528
3529 static int i810_pm_resume(struct pci_dev *dev)
3530 {
3531 int num_ac97,i=0;
3532 struct i810_card *card=pci_get_drvdata(dev);
3533 pci_enable_device(dev);
3534 pci_restore_state (dev);
3535
3536 /* observation of a toshiba portege 3440ct suggests that the
3537 hardware has to be more or less completely reinitialized from
3538 scratch after an apm suspend. Works For Me. -dan */
3539
3540 i810_ac97_power_up_bus(card);
3541
3542 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
3543 struct ac97_codec *codec = card->ac97_codec[num_ac97];
3544 /* check they haven't stolen the hardware while we were
3545 away */
3546 if(!codec || !i810_ac97_exists(card,num_ac97)) {
3547 if(num_ac97) continue;
3548 else BUG();
3549 }
3550 if(!i810_ac97_probe_and_powerup(card,codec)) BUG();
3551
3552 if((card->ac97_features&0x0001)) {
3553 /* at probe time we found we could do variable
3554 rates, but APM suspend has made it forget
3555 its magical powers */
3556 if(!i810_ac97_enable_variable_rate(codec)) BUG();
3557 }
3558 /* we lost our mixer settings, so restore them */
3559 for(i=0;i< SOUND_MIXER_NRDEVICES ;i++) {
3560 if(supported_mixer(codec,i)){
3561 int val=card->
3562 pm_saved_mixer_settings[i][num_ac97];
3563 codec->mixer_state[i]=val;
3564 codec->write_mixer(codec,i,
3565 (val & 0xff) ,
3566 ((val >> 8) & 0xff) );
3567 }
3568 }
3569 }
3570
3571 /* we need to restore the sample rate from whatever it was */
3572 for(i=0;i<NR_HW_CH;i++) {
3573 struct i810_state * state=card->states[i];
3574 if(state) {
3575 if(state->pm_saved_adc_rate)
3576 i810_set_adc_rate(state,state->pm_saved_adc_rate);
3577 if(state->pm_saved_dac_rate)
3578 i810_set_dac_rate(state,state->pm_saved_dac_rate);
3579 }
3580 }
3581
3582
3583 card->pm_suspended = 0;
3584
3585 /* any processes that were reading/writing during the suspend
3586 probably ended up here */
3587 for(i=0;i<NR_HW_CH;i++) {
3588 struct i810_state *state = card->states[i];
3589 if(state) wake_up(&state->dmabuf.wait);
3590 }
3591
3592 return 0;
3593 }
3594 #endif /* CONFIG_PM */
3595
3596 MODULE_AUTHOR("The Linux kernel team");
3597 MODULE_DESCRIPTION("Intel 810 audio support");
3598 MODULE_LICENSE("GPL");
3599 module_param(ftsodell, int, 0444);
3600 module_param(clocking, uint, 0444);
3601 module_param(strict_clocking, int, 0444);
3602 module_param(spdif_locked, int, 0444);
3603
3604 #define I810_MODULE_NAME "i810_audio"
3605
3606 static struct pci_driver i810_pci_driver = {
3607 .name = I810_MODULE_NAME,
3608 .id_table = i810_pci_tbl,
3609 .probe = i810_probe,
3610 .remove = __devexit_p(i810_remove),
3611 #ifdef CONFIG_PM
3612 .suspend = i810_pm_suspend,
3613 .resume = i810_pm_resume,
3614 #endif /* CONFIG_PM */
3615 };
3616
3617
3618 static int __init i810_init_module (void)
3619 {
3620 int retval;
3621
3622 printk(KERN_INFO "Intel 810 + AC97 Audio, version "
3623 DRIVER_VERSION ", " __TIME__ " " __DATE__ "\n");
3624
3625 retval = pci_register_driver(&i810_pci_driver);
3626 if (retval)
3627 return retval;
3628
3629 if(ftsodell != 0) {
3630 printk("i810_audio: ftsodell is now a deprecated option.\n");
3631 }
3632 if(spdif_locked > 0 ) {
3633 if(spdif_locked == 32000 || spdif_locked == 44100 || spdif_locked == 48000) {
3634 printk("i810_audio: Enabling S/PDIF at sample rate %dHz.\n", spdif_locked);
3635 } else {
3636 printk("i810_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
3637 spdif_locked = 0;
3638 }
3639 }
3640
3641 return 0;
3642 }
3643
3644 static void __exit i810_cleanup_module (void)
3645 {
3646 pci_unregister_driver(&i810_pci_driver);
3647 }
3648
3649 module_init(i810_init_module);
3650 module_exit(i810_cleanup_module);
3651
3652 /*
3653 Local Variables:
3654 c-basic-offset: 8
3655 End:
3656 */
Support for the Chinese Samsung S3C2440 based development boards