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ACPICA: add ASF comment
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / sound / oss / i810_audio.c
blobc3c8a720d555a73749c1b9f62587f16097f7fae2
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 kmalloc(sizeof(struct i810_state), GFP_KERNEL);
2584 if (state == NULL)
2585 return -ENOMEM;
2586 memset(state, 0, sizeof(struct i810_state));
2587 dmabuf = &state->dmabuf;
2588 goto found_virt;
2589 }
2590 }
2591 card = card->next;
2592 }
2593 /* no more virtual channel avaiable */
2594 if (!state)
2595 return -ENODEV;
2596
2597 found_virt:
2598 /* initialize the virtual channel */
2599 state->virt = i;
2600 state->card = card;
2601 state->magic = I810_STATE_MAGIC;
2602 init_waitqueue_head(&dmabuf->wait);
2603 mutex_init(&state->open_mutex);
2604 file->private_data = state;
2605 dmabuf->trigger = 0;
2606
2607 /* allocate hardware channels */
2608 if(file->f_mode & FMODE_READ) {
2609 if((dmabuf->read_channel = card->alloc_rec_pcm_channel(card)) == NULL) {
2610 kfree (card->states[i]);
2611 card->states[i] = NULL;
2612 return -EBUSY;
2613 }
2614 dmabuf->trigger |= PCM_ENABLE_INPUT;
2615 i810_set_adc_rate(state, 8000);
2616 }
2617 if(file->f_mode & FMODE_WRITE) {
2618 if((dmabuf->write_channel = card->alloc_pcm_channel(card)) == NULL) {
2619 /* make sure we free the record channel allocated above */
2620 if(file->f_mode & FMODE_READ)
2621 card->free_pcm_channel(card,dmabuf->read_channel->num);
2622 kfree (card->states[i]);
2623 card->states[i] = NULL;
2624 return -EBUSY;
2625 }
2626 /* Initialize to 8kHz? What if we don't support 8kHz? */
2627 /* Let's change this to check for S/PDIF stuff */
2628
2629 dmabuf->trigger |= PCM_ENABLE_OUTPUT;
2630 if ( spdif_locked ) {
2631 i810_set_dac_rate(state, spdif_locked);
2632 i810_set_spdif_output(state, AC97_EA_SPSA_3_4, spdif_locked);
2633 } else {
2634 i810_set_dac_rate(state, 8000);
2635 /* Put the ACLink in 2 channel mode by default */
2636 i = I810_IOREADL(card, GLOB_CNT);
2637 I810_IOWRITEL(i & 0xffcfffff, card, GLOB_CNT);
2638 }
2639 }
2640
2641 /* set default sample format. According to OSS Programmer's Guide /dev/dsp
2642 should be default to unsigned 8-bits, mono, with sample rate 8kHz and
2643 /dev/dspW will accept 16-bits sample, but we don't support those so we
2644 set it immediately to stereo and 16bit, which is all we do support */
2645 dmabuf->fmt |= I810_FMT_16BIT | I810_FMT_STEREO;
2646 dmabuf->ossfragsize = 0;
2647 dmabuf->ossmaxfrags = 0;
2648 dmabuf->subdivision = 0;
2649
2650 state->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
2651
2652 return nonseekable_open(inode, file);
2653 }
2654
2655 static int i810_release(struct inode *inode, struct file *file)
2656 {
2657 struct i810_state *state = (struct i810_state *)file->private_data;
2658 struct i810_card *card = state->card;
2659 struct dmabuf *dmabuf = &state->dmabuf;
2660 unsigned long flags;
2661
2662 lock_kernel();
2663
2664 /* stop DMA state machine and free DMA buffers/channels */
2665 if(dmabuf->trigger & PCM_ENABLE_OUTPUT) {
2666 drain_dac(state, 0);
2667 }
2668 if(dmabuf->trigger & PCM_ENABLE_INPUT) {
2669 stop_adc(state);
2670 }
2671 spin_lock_irqsave(&card->lock, flags);
2672 dealloc_dmabuf(state);
2673 if (file->f_mode & FMODE_WRITE) {
2674 state->card->free_pcm_channel(state->card, dmabuf->write_channel->num);
2675 }
2676 if (file->f_mode & FMODE_READ) {
2677 state->card->free_pcm_channel(state->card, dmabuf->read_channel->num);
2678 }
2679
2680 state->card->states[state->virt] = NULL;
2681 kfree(state);
2682 spin_unlock_irqrestore(&card->lock, flags);
2683 unlock_kernel();
2684
2685 return 0;
2686 }
2687
2688 static /*const*/ struct file_operations i810_audio_fops = {
2689 .owner = THIS_MODULE,
2690 .llseek = no_llseek,
2691 .read = i810_read,
2692 .write = i810_write,
2693 .poll = i810_poll,
2694 .ioctl = i810_ioctl,
2695 .mmap = i810_mmap,
2696 .open = i810_open,
2697 .release = i810_release,
2698 };
2699
2700 /* Write AC97 codec registers */
2701
2702 static u16 i810_ac97_get_mmio(struct ac97_codec *dev, u8 reg)
2703 {
2704 struct i810_card *card = dev->private_data;
2705 int count = 100;
2706 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2707
2708 while(count-- && (readb(card->iobase_mmio + CAS) & 1))
2709 udelay(1);
2710
2711 #ifdef DEBUG_MMIO
2712 {
2713 u16 ans = readw(card->ac97base_mmio + reg_set);
2714 printk(KERN_DEBUG "i810_audio: ac97_get_mmio(%d) -> 0x%04X\n", ((int) reg_set) & 0xffff, (u32) ans);
2715 return ans;
2716 }
2717 #else
2718 return readw(card->ac97base_mmio + reg_set);
2719 #endif
2720 }
2721
2722 static u16 i810_ac97_get_io(struct ac97_codec *dev, u8 reg)
2723 {
2724 struct i810_card *card = dev->private_data;
2725 int count = 100;
2726 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2727
2728 while(count-- && (I810_IOREADB(card, CAS) & 1))
2729 udelay(1);
2730
2731 return inw(card->ac97base + reg_set);
2732 }
2733
2734 static void i810_ac97_set_mmio(struct ac97_codec *dev, u8 reg, u16 data)
2735 {
2736 struct i810_card *card = dev->private_data;
2737 int count = 100;
2738 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2739
2740 while(count-- && (readb(card->iobase_mmio + CAS) & 1))
2741 udelay(1);
2742
2743 writew(data, card->ac97base_mmio + reg_set);
2744
2745 #ifdef DEBUG_MMIO
2746 printk(KERN_DEBUG "i810_audio: ac97_set_mmio(0x%04X, %d)\n", (u32) data, ((int) reg_set) & 0xffff);
2747 #endif
2748 }
2749
2750 static void i810_ac97_set_io(struct ac97_codec *dev, u8 reg, u16 data)
2751 {
2752 struct i810_card *card = dev->private_data;
2753 int count = 100;
2754 u16 reg_set = IO_REG_OFF(dev) | (reg&0x7f);
2755
2756 while(count-- && (I810_IOREADB(card, CAS) & 1))
2757 udelay(1);
2758
2759 outw(data, card->ac97base + reg_set);
2760 }
2761
2762 static u16 i810_ac97_get(struct ac97_codec *dev, u8 reg)
2763 {
2764 struct i810_card *card = dev->private_data;
2765 u16 ret;
2766
2767 spin_lock(&card->ac97_lock);
2768 if (card->use_mmio) {
2769 ret = i810_ac97_get_mmio(dev, reg);
2770 }
2771 else {
2772 ret = i810_ac97_get_io(dev, reg);
2773 }
2774 spin_unlock(&card->ac97_lock);
2775
2776 return ret;
2777 }
2778
2779 static void i810_ac97_set(struct ac97_codec *dev, u8 reg, u16 data)
2780 {
2781 struct i810_card *card = dev->private_data;
2782
2783 spin_lock(&card->ac97_lock);
2784 if (card->use_mmio) {
2785 i810_ac97_set_mmio(dev, reg, data);
2786 }
2787 else {
2788 i810_ac97_set_io(dev, reg, data);
2789 }
2790 spin_unlock(&card->ac97_lock);
2791 }
2792
2793
2794 /* OSS /dev/mixer file operation methods */
2795
2796 static int i810_open_mixdev(struct inode *inode, struct file *file)
2797 {
2798 int i;
2799 int minor = iminor(inode);
2800 struct i810_card *card = devs;
2801
2802 for (card = devs; card != NULL; card = card->next) {
2803 /*
2804 * If we are initializing and then fail, card could go
2805 * away unuexpectedly while we are in the for() loop.
2806 * So, check for card on each iteration before we check
2807 * for card->initializing to avoid a possible oops.
2808 * This usually only matters for times when the driver is
2809 * autoloaded by kmod.
2810 */
2811 for (i = 0; i < 50 && card && card->initializing; i++) {
2812 set_current_state(TASK_UNINTERRUPTIBLE);
2813 schedule_timeout(HZ/20);
2814 }
2815 for (i = 0; i < NR_AC97 && card && !card->initializing; i++)
2816 if (card->ac97_codec[i] != NULL &&
2817 card->ac97_codec[i]->dev_mixer == minor) {
2818 file->private_data = card->ac97_codec[i];
2819 return nonseekable_open(inode, file);
2820 }
2821 }
2822 return -ENODEV;
2823 }
2824
2825 static int i810_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd,
2826 unsigned long arg)
2827 {
2828 struct ac97_codec *codec = (struct ac97_codec *)file->private_data;
2829
2830 return codec->mixer_ioctl(codec, cmd, arg);
2831 }
2832
2833 static /*const*/ struct file_operations i810_mixer_fops = {
2834 .owner = THIS_MODULE,
2835 .llseek = no_llseek,
2836 .ioctl = i810_ioctl_mixdev,
2837 .open = i810_open_mixdev,
2838 };
2839
2840 /* AC97 codec initialisation. These small functions exist so we don't
2841 duplicate code between module init and apm resume */
2842
2843 static inline int i810_ac97_exists(struct i810_card *card, int ac97_number)
2844 {
2845 u32 reg = I810_IOREADL(card, GLOB_STA);
2846 switch (ac97_number) {
2847 case 0:
2848 return reg & (1<<8);
2849 case 1:
2850 return reg & (1<<9);
2851 case 2:
2852 return reg & (1<<28);
2853 }
2854 return 0;
2855 }
2856
2857 static inline int i810_ac97_enable_variable_rate(struct ac97_codec *codec)
2858 {
2859 i810_ac97_set(codec, AC97_EXTENDED_STATUS, 9);
2860 i810_ac97_set(codec,AC97_EXTENDED_STATUS,
2861 i810_ac97_get(codec, AC97_EXTENDED_STATUS)|0xE800);
2862
2863 return (i810_ac97_get(codec, AC97_EXTENDED_STATUS)&1);
2864 }
2865
2866
2867 static int i810_ac97_probe_and_powerup(struct i810_card *card,struct ac97_codec *codec)
2868 {
2869 /* Returns 0 on failure */
2870 int i;
2871
2872 if (ac97_probe_codec(codec) == 0) return 0;
2873
2874 /* power it all up */
2875 i810_ac97_set(codec, AC97_POWER_CONTROL,
2876 i810_ac97_get(codec, AC97_POWER_CONTROL) & ~0x7f00);
2877
2878 /* wait for analog ready */
2879 for (i=100; i && ((i810_ac97_get(codec, AC97_POWER_CONTROL) & 0xf) != 0xf); i--)
2880 {
2881 set_current_state(TASK_UNINTERRUPTIBLE);
2882 schedule_timeout(HZ/20);
2883 }
2884 return i;
2885 }
2886
2887 static int is_new_ich(u16 pci_id)
2888 {
2889 switch (pci_id) {
2890 case PCI_DEVICE_ID_INTEL_82801DB_5:
2891 case PCI_DEVICE_ID_INTEL_82801EB_5:
2892 case PCI_DEVICE_ID_INTEL_ESB_5:
2893 case PCI_DEVICE_ID_INTEL_ICH6_18:
2894 return 1;
2895 default:
2896 break;
2897 }
2898
2899 return 0;
2900 }
2901
2902 static inline int ich_use_mmio(struct i810_card *card)
2903 {
2904 return is_new_ich(card->pci_id) && card->use_mmio;
2905 }
2906
2907 /**
2908 * i810_ac97_power_up_bus - bring up AC97 link
2909 * @card : ICH audio device to power up
2910 *
2911 * Bring up the ACLink AC97 codec bus
2912 */
2913
2914 static int i810_ac97_power_up_bus(struct i810_card *card)
2915 {
2916 u32 reg = I810_IOREADL(card, GLOB_CNT);
2917 int i;
2918 int primary_codec_id = 0;
2919
2920 if((reg&2)==0) /* Cold required */
2921 reg|=2;
2922 else
2923 reg|=4; /* Warm */
2924
2925 reg&=~8; /* ACLink on */
2926
2927 /* At this point we deassert AC_RESET # */
2928 I810_IOWRITEL(reg , card, GLOB_CNT);
2929
2930 /* We must now allow time for the Codec initialisation.
2931 600mS is the specified time */
2932
2933 for(i=0;i<10;i++)
2934 {
2935 if((I810_IOREADL(card, GLOB_CNT)&4)==0)
2936 break;
2937
2938 set_current_state(TASK_UNINTERRUPTIBLE);
2939 schedule_timeout(HZ/20);
2940 }
2941 if(i==10)
2942 {
2943 printk(KERN_ERR "i810_audio: AC'97 reset failed.\n");
2944 return 0;
2945 }
2946
2947 set_current_state(TASK_UNINTERRUPTIBLE);
2948 schedule_timeout(HZ/2);
2949
2950 /*
2951 * See if the primary codec comes ready. This must happen
2952 * before we start doing DMA stuff
2953 */
2954 /* see i810_ac97_init for the next 10 lines (jsaw) */
2955 if (card->use_mmio)
2956 readw(card->ac97base_mmio);
2957 else
2958 inw(card->ac97base);
2959 if (ich_use_mmio(card)) {
2960 primary_codec_id = (int) readl(card->iobase_mmio + SDM) & 0x3;
2961 printk(KERN_INFO "i810_audio: Primary codec has ID %d\n",
2962 primary_codec_id);
2963 }
2964
2965 if(! i810_ac97_exists(card, primary_codec_id))
2966 {
2967 printk(KERN_INFO "i810_audio: Codec not ready.. wait.. ");
2968 set_current_state(TASK_UNINTERRUPTIBLE);
2969 schedule_timeout(HZ); /* actually 600mS by the spec */
2970
2971 if(i810_ac97_exists(card, primary_codec_id))
2972 printk("OK\n");
2973 else
2974 printk("no response.\n");
2975 }
2976 if (card->use_mmio)
2977 readw(card->ac97base_mmio);
2978 else
2979 inw(card->ac97base);
2980 return 1;
2981 }
2982
2983 static int __devinit i810_ac97_init(struct i810_card *card)
2984 {
2985 int num_ac97 = 0;
2986 int ac97_id;
2987 int total_channels = 0;
2988 int nr_ac97_max = card_cap[card->pci_id_internal].nr_ac97;
2989 struct ac97_codec *codec;
2990 u16 eid;
2991 u32 reg;
2992
2993 if(!i810_ac97_power_up_bus(card)) return 0;
2994
2995 /* Number of channels supported */
2996 /* What about the codec? Just because the ICH supports */
2997 /* multiple channels doesn't mean the codec does. */
2998 /* we'll have to modify this in the codec section below */
2999 /* to reflect what the codec has. */
3000 /* ICH and ICH0 only support 2 channels so don't bother */
3001 /* to check.... */
3002
3003 card->channels = 2;
3004 reg = I810_IOREADL(card, GLOB_STA);
3005 if ( reg & 0x0200000 )
3006 card->channels = 6;
3007 else if ( reg & 0x0100000 )
3008 card->channels = 4;
3009 printk(KERN_INFO "i810_audio: Audio Controller supports %d channels.\n", card->channels);
3010 printk(KERN_INFO "i810_audio: Defaulting to base 2 channel mode.\n");
3011 reg = I810_IOREADL(card, GLOB_CNT);
3012 I810_IOWRITEL(reg & 0xffcfffff, card, GLOB_CNT);
3013
3014 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++)
3015 card->ac97_codec[num_ac97] = NULL;
3016
3017 /*@FIXME I don't know, if I'm playing to safe here... (jsaw) */
3018 if ((nr_ac97_max > 2) && !card->use_mmio) nr_ac97_max = 2;
3019
3020 for (num_ac97 = 0; num_ac97 < nr_ac97_max; num_ac97++) {
3021 /* codec reset */
3022 printk(KERN_INFO "i810_audio: Resetting connection %d\n", num_ac97);
3023 if (card->use_mmio)
3024 readw(card->ac97base_mmio + 0x80*num_ac97);
3025 else
3026 inw(card->ac97base + 0x80*num_ac97);
3027
3028 /* If we have the SDATA_IN Map Register, as on ICH4, we
3029 do not loop thru all possible codec IDs but thru all
3030 possible IO channels. Bit 0:1 of SDM then holds the
3031 last codec ID spoken to.
3032 */
3033 if (ich_use_mmio(card)) {
3034 ac97_id = (int) readl(card->iobase_mmio + SDM) & 0x3;
3035 printk(KERN_INFO "i810_audio: Connection %d with codec id %d\n",
3036 num_ac97, ac97_id);
3037 }
3038 else {
3039 ac97_id = num_ac97;
3040 }
3041
3042 /* The ICH programmer's reference says you should */
3043 /* check the ready status before probing. So we chk */
3044 /* What do we do if it's not ready? Wait and try */
3045 /* again, or abort? */
3046 if (!i810_ac97_exists(card, ac97_id)) {
3047 if(num_ac97 == 0)
3048 printk(KERN_ERR "i810_audio: Primary codec not ready.\n");
3049 }
3050
3051 if ((codec = ac97_alloc_codec()) == NULL)
3052 return -ENOMEM;
3053
3054 /* initialize some basic codec information, other fields will be filled
3055 in ac97_probe_codec */
3056 codec->private_data = card;
3057 codec->id = ac97_id;
3058 card->ac97_id_map[ac97_id] = num_ac97 * 0x80;
3059
3060 if (card->use_mmio) {
3061 codec->codec_read = i810_ac97_get_mmio;
3062 codec->codec_write = i810_ac97_set_mmio;
3063 }
3064 else {
3065 codec->codec_read = i810_ac97_get_io;
3066 codec->codec_write = i810_ac97_set_io;
3067 }
3068
3069 if(!i810_ac97_probe_and_powerup(card,codec)) {
3070 printk(KERN_ERR "i810_audio: timed out waiting for codec %d analog ready.\n", ac97_id);
3071 ac97_release_codec(codec);
3072 break; /* it didn't work */
3073 }
3074 /* Store state information about S/PDIF transmitter */
3075 card->ac97_status = 0;
3076
3077 /* Don't attempt to get eid until powerup is complete */
3078 eid = i810_ac97_get(codec, AC97_EXTENDED_ID);
3079
3080 if(eid==0xFFFF)
3081 {
3082 printk(KERN_WARNING "i810_audio: no codec attached ?\n");
3083 ac97_release_codec(codec);
3084 break;
3085 }
3086
3087 /* Check for an AC97 1.0 soft modem (ID1) */
3088
3089 if(codec->modem)
3090 {
3091 printk(KERN_WARNING "i810_audio: codec %d is a softmodem - skipping.\n", ac97_id);
3092 ac97_release_codec(codec);
3093 continue;
3094 }
3095
3096 card->ac97_features = eid;
3097
3098 /* Now check the codec for useful features to make up for
3099 the dumbness of the 810 hardware engine */
3100
3101 if(!(eid&0x0001))
3102 printk(KERN_WARNING "i810_audio: only 48Khz playback available.\n");
3103 else
3104 {
3105 if(!i810_ac97_enable_variable_rate(codec)) {
3106 printk(KERN_WARNING "i810_audio: Codec refused to allow VRA, using 48Khz only.\n");
3107 card->ac97_features&=~1;
3108 }
3109 }
3110
3111 /* Turn on the amplifier */
3112
3113 codec->codec_write(codec, AC97_POWER_CONTROL,
3114 codec->codec_read(codec, AC97_POWER_CONTROL) & ~0x8000);
3115
3116 /* Determine how many channels the codec(s) support */
3117 /* - The primary codec always supports 2 */
3118 /* - If the codec supports AMAP, surround DACs will */
3119 /* automaticlly get assigned to slots. */
3120 /* * Check for surround DACs and increment if */
3121 /* found. */
3122 /* - Else check if the codec is revision 2.2 */
3123 /* * If surround DACs exist, assign them to slots */
3124 /* and increment channel count. */
3125
3126 /* All of this only applies to ICH2 and above. ICH */
3127 /* and ICH0 only support 2 channels. ICH2 will only */
3128 /* support multiple codecs in a "split audio" config. */
3129 /* as described above. */
3130
3131 /* TODO: Remove all the debugging messages! */
3132
3133 if((eid & 0xc000) == 0) /* primary codec */
3134 total_channels += 2;
3135
3136 if(eid & 0x200) { /* GOOD, AMAP support */
3137 if (eid & 0x0080) /* L/R Surround channels */
3138 total_channels += 2;
3139 if (eid & 0x0140) /* LFE and Center channels */
3140 total_channels += 2;
3141 printk("i810_audio: AC'97 codec %d supports AMAP, total channels = %d\n", ac97_id, total_channels);
3142 } else if (eid & 0x0400) { /* this only works on 2.2 compliant codecs */
3143 eid &= 0xffcf;
3144 if((eid & 0xc000) != 0) {
3145 switch ( total_channels ) {
3146 case 2:
3147 /* Set dsa1, dsa0 to 01 */
3148 eid |= 0x0010;
3149 break;
3150 case 4:
3151 /* Set dsa1, dsa0 to 10 */
3152 eid |= 0x0020;
3153 break;
3154 case 6:
3155 /* Set dsa1, dsa0 to 11 */
3156 eid |= 0x0030;
3157 break;
3158 }
3159 total_channels += 2;
3160 }
3161 i810_ac97_set(codec, AC97_EXTENDED_ID, eid);
3162 eid = i810_ac97_get(codec, AC97_EXTENDED_ID);
3163 printk("i810_audio: AC'97 codec %d, new EID value = 0x%04x\n", ac97_id, eid);
3164 if (eid & 0x0080) /* L/R Surround channels */
3165 total_channels += 2;
3166 if (eid & 0x0140) /* LFE and Center channels */
3167 total_channels += 2;
3168 printk("i810_audio: AC'97 codec %d, DAC map configured, total channels = %d\n", ac97_id, total_channels);
3169 } else {
3170 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);
3171 }
3172
3173 if ((codec->dev_mixer = register_sound_mixer(&i810_mixer_fops, -1)) < 0) {
3174 printk(KERN_ERR "i810_audio: couldn't register mixer!\n");
3175 ac97_release_codec(codec);
3176 break;
3177 }
3178
3179 card->ac97_codec[num_ac97] = codec;
3180 }
3181
3182 /* tune up the primary codec */
3183 ac97_tune_hardware(card->pci_dev, ac97_quirks, ac97_quirk);
3184
3185 /* pick the minimum of channels supported by ICHx or codec(s) */
3186 card->channels = (card->channels > total_channels)?total_channels:card->channels;
3187
3188 return num_ac97;
3189 }
3190
3191 static void __devinit i810_configure_clocking (void)
3192 {
3193 struct i810_card *card;
3194 struct i810_state *state;
3195 struct dmabuf *dmabuf;
3196 unsigned int i, offset, new_offset;
3197 unsigned long flags;
3198
3199 card = devs;
3200 /* We could try to set the clocking for multiple cards, but can you even have
3201 * more than one i810 in a machine? Besides, clocking is global, so unless
3202 * someone actually thinks more than one i810 in a machine is possible and
3203 * decides to rewrite that little bit, setting the rate for more than one card
3204 * is a waste of time.
3205 */
3206 if(card != NULL) {
3207 state = card->states[0] = (struct i810_state *)
3208 kmalloc(sizeof(struct i810_state), GFP_KERNEL);
3209 if (state == NULL)
3210 return;
3211 memset(state, 0, sizeof(struct i810_state));
3212 dmabuf = &state->dmabuf;
3213
3214 dmabuf->write_channel = card->alloc_pcm_channel(card);
3215 state->virt = 0;
3216 state->card = card;
3217 state->magic = I810_STATE_MAGIC;
3218 init_waitqueue_head(&dmabuf->wait);
3219 mutex_init(&state->open_mutex);
3220 dmabuf->fmt = I810_FMT_STEREO | I810_FMT_16BIT;
3221 dmabuf->trigger = PCM_ENABLE_OUTPUT;
3222 i810_set_spdif_output(state, -1, 0);
3223 i810_set_dac_channels(state, 2);
3224 i810_set_dac_rate(state, 48000);
3225 if(prog_dmabuf(state, 0) != 0) {
3226 goto config_out_nodmabuf;
3227 }
3228 if(dmabuf->dmasize < 16384) {
3229 goto config_out;
3230 }
3231 dmabuf->count = dmabuf->dmasize;
3232 CIV_TO_LVI(card, dmabuf->write_channel->port, -1);
3233 local_irq_save(flags);
3234 start_dac(state);
3235 offset = i810_get_dma_addr(state, 0);
3236 mdelay(50);
3237 new_offset = i810_get_dma_addr(state, 0);
3238 stop_dac(state);
3239 local_irq_restore(flags);
3240 i = new_offset - offset;
3241 #ifdef DEBUG_INTERRUPTS
3242 printk("i810_audio: %d bytes in 50 milliseconds\n", i);
3243 #endif
3244 if(i == 0)
3245 goto config_out;
3246 i = i / 4 * 20;
3247 if (i > 48500 || i < 47500) {
3248 clocking = clocking * clocking / i;
3249 printk("i810_audio: setting clocking to %d\n", clocking);
3250 }
3251 config_out:
3252 dealloc_dmabuf(state);
3253 config_out_nodmabuf:
3254 state->card->free_pcm_channel(state->card,state->dmabuf.write_channel->num);
3255 kfree(state);
3256 card->states[0] = NULL;
3257 }
3258 }
3259
3260 /* install the driver, we do not allocate hardware channel nor DMA buffer now, they are defered
3261 until "ACCESS" time (in prog_dmabuf called by open/read/write/ioctl/mmap) */
3262
3263 static int __devinit i810_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
3264 {
3265 struct i810_card *card;
3266
3267 if (pci_enable_device(pci_dev))
3268 return -EIO;
3269
3270 if (pci_set_dma_mask(pci_dev, I810_DMA_MASK)) {
3271 printk(KERN_ERR "i810_audio: architecture does not support"
3272 " 32bit PCI busmaster DMA\n");
3273 return -ENODEV;
3274 }
3275
3276 if ((card = kmalloc(sizeof(struct i810_card), GFP_KERNEL)) == NULL) {
3277 printk(KERN_ERR "i810_audio: out of memory\n");
3278 return -ENOMEM;
3279 }
3280 memset(card, 0, sizeof(*card));
3281
3282 card->initializing = 1;
3283 card->pci_dev = pci_dev;
3284 card->pci_id = pci_id->device;
3285 card->ac97base = pci_resource_start (pci_dev, 0);
3286 card->iobase = pci_resource_start (pci_dev, 1);
3287
3288 if (!(card->ac97base) || !(card->iobase)) {
3289 card->ac97base = 0;
3290 card->iobase = 0;
3291 }
3292
3293 /* if chipset could have mmio capability, check it */
3294 if (card_cap[pci_id->driver_data].flags & CAP_MMIO) {
3295 card->ac97base_mmio_phys = pci_resource_start (pci_dev, 2);
3296 card->iobase_mmio_phys = pci_resource_start (pci_dev, 3);
3297
3298 if ((card->ac97base_mmio_phys) && (card->iobase_mmio_phys)) {
3299 card->use_mmio = 1;
3300 }
3301 else {
3302 card->ac97base_mmio_phys = 0;
3303 card->iobase_mmio_phys = 0;
3304 }
3305 }
3306
3307 if (!(card->use_mmio) && (!(card->iobase) || !(card->ac97base))) {
3308 printk(KERN_ERR "i810_audio: No I/O resources available.\n");
3309 goto out_mem;
3310 }
3311
3312 card->irq = pci_dev->irq;
3313 card->next = devs;
3314 card->magic = I810_CARD_MAGIC;
3315 #ifdef CONFIG_PM
3316 card->pm_suspended=0;
3317 #endif
3318 spin_lock_init(&card->lock);
3319 spin_lock_init(&card->ac97_lock);
3320 devs = card;
3321
3322 pci_set_master(pci_dev);
3323
3324 printk(KERN_INFO "i810: %s found at IO 0x%04lx and 0x%04lx, "
3325 "MEM 0x%04lx and 0x%04lx, IRQ %d\n",
3326 card_names[pci_id->driver_data],
3327 card->iobase, card->ac97base,
3328 card->ac97base_mmio_phys, card->iobase_mmio_phys,
3329 card->irq);
3330
3331 card->alloc_pcm_channel = i810_alloc_pcm_channel;
3332 card->alloc_rec_pcm_channel = i810_alloc_rec_pcm_channel;
3333 card->alloc_rec_mic_channel = i810_alloc_rec_mic_channel;
3334 card->free_pcm_channel = i810_free_pcm_channel;
3335
3336 if ((card->channel = pci_alloc_consistent(pci_dev,
3337 sizeof(struct i810_channel)*NR_HW_CH, &card->chandma)) == NULL) {
3338 printk(KERN_ERR "i810: cannot allocate channel DMA memory\n");
3339 goto out_mem;
3340 }
3341
3342 { /* We may dispose of this altogether some time soon, so... */
3343 struct i810_channel *cp = card->channel;
3344
3345 cp[0].offset = 0;
3346 cp[0].port = 0x00;
3347 cp[0].num = 0;
3348 cp[1].offset = 0;
3349 cp[1].port = 0x10;
3350 cp[1].num = 1;
3351 cp[2].offset = 0;
3352 cp[2].port = 0x20;
3353 cp[2].num = 2;
3354 }
3355
3356 /* claim our iospace and irq */
3357 if (!request_region(card->iobase, 64, card_names[pci_id->driver_data])) {
3358 printk(KERN_ERR "i810_audio: unable to allocate region %lx\n", card->iobase);
3359 goto out_region1;
3360 }
3361 if (!request_region(card->ac97base, 256, card_names[pci_id->driver_data])) {
3362 printk(KERN_ERR "i810_audio: unable to allocate region %lx\n", card->ac97base);
3363 goto out_region2;
3364 }
3365
3366 if (card->use_mmio) {
3367 if (request_mem_region(card->ac97base_mmio_phys, 512, "ich_audio MMBAR")) {
3368 if ((card->ac97base_mmio = ioremap(card->ac97base_mmio_phys, 512))) { /*@FIXME can ioremap fail? don't know (jsaw) */
3369 if (request_mem_region(card->iobase_mmio_phys, 256, "ich_audio MBBAR")) {
3370 if ((card->iobase_mmio = ioremap(card->iobase_mmio_phys, 256))) {
3371 printk(KERN_INFO "i810: %s mmio at 0x%04lx and 0x%04lx\n",
3372 card_names[pci_id->driver_data],
3373 (unsigned long) card->ac97base_mmio,
3374 (unsigned long) card->iobase_mmio);
3375 }
3376 else {
3377 iounmap(card->ac97base_mmio);
3378 release_mem_region(card->ac97base_mmio_phys, 512);
3379 release_mem_region(card->iobase_mmio_phys, 512);
3380 card->use_mmio = 0;
3381 }
3382 }
3383 else {
3384 iounmap(card->ac97base_mmio);
3385 release_mem_region(card->ac97base_mmio_phys, 512);
3386 card->use_mmio = 0;
3387 }
3388 }
3389 }
3390 else {
3391 card->use_mmio = 0;
3392 }
3393 }
3394
3395 /* initialize AC97 codec and register /dev/mixer */
3396 if (i810_ac97_init(card) <= 0)
3397 goto out_iospace;
3398 pci_set_drvdata(pci_dev, card);
3399
3400 if(clocking == 0) {
3401 clocking = 48000;
3402 i810_configure_clocking();
3403 }
3404
3405 /* register /dev/dsp */
3406 if ((card->dev_audio = register_sound_dsp(&i810_audio_fops, -1)) < 0) {
3407 int i;
3408 printk(KERN_ERR "i810_audio: couldn't register DSP device!\n");
3409 for (i = 0; i < NR_AC97; i++)
3410 if (card->ac97_codec[i] != NULL) {
3411 unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
3412 ac97_release_codec(card->ac97_codec[i]);
3413 }
3414 goto out_iospace;
3415 }
3416
3417 if (request_irq(card->irq, &i810_interrupt, IRQF_SHARED,
3418 card_names[pci_id->driver_data], card)) {
3419 printk(KERN_ERR "i810_audio: unable to allocate irq %d\n", card->irq);
3420 goto out_iospace;
3421 }
3422
3423
3424 card->initializing = 0;
3425 return 0;
3426
3427 out_iospace:
3428 if (card->use_mmio) {
3429 iounmap(card->ac97base_mmio);
3430 iounmap(card->iobase_mmio);
3431 release_mem_region(card->ac97base_mmio_phys, 512);
3432 release_mem_region(card->iobase_mmio_phys, 256);
3433 }
3434 release_region(card->ac97base, 256);
3435 out_region2:
3436 release_region(card->iobase, 64);
3437 out_region1:
3438 pci_free_consistent(pci_dev, sizeof(struct i810_channel)*NR_HW_CH,
3439 card->channel, card->chandma);
3440 out_mem:
3441 kfree(card);
3442 return -ENODEV;
3443 }
3444
3445 static void __devexit i810_remove(struct pci_dev *pci_dev)
3446 {
3447 int i;
3448 struct i810_card *card = pci_get_drvdata(pci_dev);
3449 /* free hardware resources */
3450 free_irq(card->irq, devs);
3451 release_region(card->iobase, 64);
3452 release_region(card->ac97base, 256);
3453 pci_free_consistent(pci_dev, sizeof(struct i810_channel)*NR_HW_CH,
3454 card->channel, card->chandma);
3455 if (card->use_mmio) {
3456 iounmap(card->ac97base_mmio);
3457 iounmap(card->iobase_mmio);
3458 release_mem_region(card->ac97base_mmio_phys, 512);
3459 release_mem_region(card->iobase_mmio_phys, 256);
3460 }
3461
3462 /* unregister audio devices */
3463 for (i = 0; i < NR_AC97; i++)
3464 if (card->ac97_codec[i] != NULL) {
3465 unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
3466 ac97_release_codec(card->ac97_codec[i]);
3467 card->ac97_codec[i] = NULL;
3468 }
3469 unregister_sound_dsp(card->dev_audio);
3470 kfree(card);
3471 }
3472
3473 #ifdef CONFIG_PM
3474 static int i810_pm_suspend(struct pci_dev *dev, pm_message_t pm_state)
3475 {
3476 struct i810_card *card = pci_get_drvdata(dev);
3477 struct i810_state *state;
3478 unsigned long flags;
3479 struct dmabuf *dmabuf;
3480 int i,num_ac97;
3481 #ifdef DEBUG
3482 printk("i810_audio: i810_pm_suspend called\n");
3483 #endif
3484 if(!card) return 0;
3485 spin_lock_irqsave(&card->lock, flags);
3486 card->pm_suspended=1;
3487 for(i=0;i<NR_HW_CH;i++) {
3488 state = card->states[i];
3489 if(!state) continue;
3490 /* this happens only if there are open files */
3491 dmabuf = &state->dmabuf;
3492 if(dmabuf->enable & DAC_RUNNING ||
3493 (dmabuf->count && (dmabuf->trigger & PCM_ENABLE_OUTPUT))) {
3494 state->pm_saved_dac_rate=dmabuf->rate;
3495 stop_dac(state);
3496 } else {
3497 state->pm_saved_dac_rate=0;
3498 }
3499 if(dmabuf->enable & ADC_RUNNING) {
3500 state->pm_saved_adc_rate=dmabuf->rate;
3501 stop_adc(state);
3502 } else {
3503 state->pm_saved_adc_rate=0;
3504 }
3505 dmabuf->ready = 0;
3506 dmabuf->swptr = dmabuf->hwptr = 0;
3507 dmabuf->count = dmabuf->total_bytes = 0;
3508 }
3509
3510 spin_unlock_irqrestore(&card->lock, flags);
3511
3512 /* save mixer settings */
3513 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
3514 struct ac97_codec *codec = card->ac97_codec[num_ac97];
3515 if(!codec) continue;
3516 for(i=0;i< SOUND_MIXER_NRDEVICES ;i++) {
3517 if((supported_mixer(codec,i)) &&
3518 (codec->read_mixer)) {
3519 card->pm_saved_mixer_settings[i][num_ac97]=
3520 codec->read_mixer(codec,i);
3521 }
3522 }
3523 }
3524 pci_save_state(dev); /* XXX do we need this? */
3525 pci_disable_device(dev); /* disable busmastering */
3526 pci_set_power_state(dev,3); /* Zzz. */
3527
3528 return 0;
3529 }
3530
3531
3532 static int i810_pm_resume(struct pci_dev *dev)
3533 {
3534 int num_ac97,i=0;
3535 struct i810_card *card=pci_get_drvdata(dev);
3536 pci_enable_device(dev);
3537 pci_restore_state (dev);
3538
3539 /* observation of a toshiba portege 3440ct suggests that the
3540 hardware has to be more or less completely reinitialized from
3541 scratch after an apm suspend. Works For Me. -dan */
3542
3543 i810_ac97_power_up_bus(card);
3544
3545 for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
3546 struct ac97_codec *codec = card->ac97_codec[num_ac97];
3547 /* check they haven't stolen the hardware while we were
3548 away */
3549 if(!codec || !i810_ac97_exists(card,num_ac97)) {
3550 if(num_ac97) continue;
3551 else BUG();
3552 }
3553 if(!i810_ac97_probe_and_powerup(card,codec)) BUG();
3554
3555 if((card->ac97_features&0x0001)) {
3556 /* at probe time we found we could do variable
3557 rates, but APM suspend has made it forget
3558 its magical powers */
3559 if(!i810_ac97_enable_variable_rate(codec)) BUG();
3560 }
3561 /* we lost our mixer settings, so restore them */
3562 for(i=0;i< SOUND_MIXER_NRDEVICES ;i++) {
3563 if(supported_mixer(codec,i)){
3564 int val=card->
3565 pm_saved_mixer_settings[i][num_ac97];
3566 codec->mixer_state[i]=val;
3567 codec->write_mixer(codec,i,
3568 (val & 0xff) ,
3569 ((val >> 8) & 0xff) );
3570 }
3571 }
3572 }
3573
3574 /* we need to restore the sample rate from whatever it was */
3575 for(i=0;i<NR_HW_CH;i++) {
3576 struct i810_state * state=card->states[i];
3577 if(state) {
3578 if(state->pm_saved_adc_rate)
3579 i810_set_adc_rate(state,state->pm_saved_adc_rate);
3580 if(state->pm_saved_dac_rate)
3581 i810_set_dac_rate(state,state->pm_saved_dac_rate);
3582 }
3583 }
3584
3585
3586 card->pm_suspended = 0;
3587
3588 /* any processes that were reading/writing during the suspend
3589 probably ended up here */
3590 for(i=0;i<NR_HW_CH;i++) {
3591 struct i810_state *state = card->states[i];
3592 if(state) wake_up(&state->dmabuf.wait);
3593 }
3594
3595 return 0;
3596 }
3597 #endif /* CONFIG_PM */
3598
3599 MODULE_AUTHOR("The Linux kernel team");
3600 MODULE_DESCRIPTION("Intel 810 audio support");
3601 MODULE_LICENSE("GPL");
3602 module_param(ftsodell, int, 0444);
3603 module_param(clocking, uint, 0444);
3604 module_param(strict_clocking, int, 0444);
3605 module_param(spdif_locked, int, 0444);
3606
3607 #define I810_MODULE_NAME "i810_audio"
3608
3609 static struct pci_driver i810_pci_driver = {
3610 .name = I810_MODULE_NAME,
3611 .id_table = i810_pci_tbl,
3612 .probe = i810_probe,
3613 .remove = __devexit_p(i810_remove),
3614 #ifdef CONFIG_PM
3615 .suspend = i810_pm_suspend,
3616 .resume = i810_pm_resume,
3617 #endif /* CONFIG_PM */
3618 };
3619
3620
3621 static int __init i810_init_module (void)
3622 {
3623 int retval;
3624
3625 printk(KERN_INFO "Intel 810 + AC97 Audio, version "
3626 DRIVER_VERSION ", " __TIME__ " " __DATE__ "\n");
3627
3628 retval = pci_register_driver(&i810_pci_driver);
3629 if (retval)
3630 return retval;
3631
3632 if(ftsodell != 0) {
3633 printk("i810_audio: ftsodell is now a deprecated option.\n");
3634 }
3635 if(spdif_locked > 0 ) {
3636 if(spdif_locked == 32000 || spdif_locked == 44100 || spdif_locked == 48000) {
3637 printk("i810_audio: Enabling S/PDIF at sample rate %dHz.\n", spdif_locked);
3638 } else {
3639 printk("i810_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
3640 spdif_locked = 0;
3641 }
3642 }
3643
3644 return 0;
3645 }
3646
3647 static void __exit i810_cleanup_module (void)
3648 {
3649 pci_unregister_driver(&i810_pci_driver);
3650 }
3651
3652 module_init(i810_init_module);
3653 module_exit(i810_cleanup_module);
3654
3655 /*
3656 Local Variables:
3657 c-basic-offset: 8
3658 End:
3659 */
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree