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[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / sound / pci / hda / hda_intel.c
blob959953ca320a16a7904ecd016e9a66d798564001
1 /*
2 *
3 * hda_intel.c - Implementation of primary alsa driver code base for Intel HD Audio.
4 *
5 * Copyright(c) 2004 Intel Corporation. All rights reserved.
6 *
7 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
8 * PeiSen Hou <pshou@realtek.com.tw>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the Free
12 * Software Foundation; either version 2 of the License, or (at your option)
13 * any later version.
14 *
15 * This program is distributed in the hope that it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
18 * more details.
19 *
20 * You should have received a copy of the GNU General Public License along with
21 * this program; if not, write to the Free Software Foundation, Inc., 59
22 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 *
24 * CONTACTS:
25 *
26 * Matt Jared matt.jared@intel.com
27 * Andy Kopp andy.kopp@intel.com
28 * Dan Kogan dan.d.kogan@intel.com
29 *
30 * CHANGES:
31 *
32 * 2004.12.01 Major rewrite by tiwai, merged the work of pshou
33 *
34 */
35
36 #include <sound/driver.h>
37 #include <asm/io.h>
38 #include <linux/delay.h>
39 #include <linux/interrupt.h>
40 #include <linux/module.h>
41 #include <linux/moduleparam.h>
42 #include <linux/init.h>
43 #include <linux/slab.h>
44 #include <linux/pci.h>
45 #include <sound/core.h>
46 #include <sound/initval.h>
47 #include "hda_codec.h"
48
49
50 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
51 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
52 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
53 static char *model[SNDRV_CARDS];
54
55 module_param_array(index, int, NULL, 0444);
56 MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
57 module_param_array(id, charp, NULL, 0444);
58 MODULE_PARM_DESC(id, "ID string for Intel HD audio interface.");
59 module_param_array(enable, bool, NULL, 0444);
60 MODULE_PARM_DESC(enable, "Enable Intel HD audio interface.");
61 module_param_array(model, charp, NULL, 0444);
62 MODULE_PARM_DESC(model, "Use the given board model.");
63
64 MODULE_LICENSE("GPL");
65 MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
66 "{Intel, ICH6M},"
67 "{Intel, ICH7},"
68 "{Intel, ESB2}}");
69 MODULE_DESCRIPTION("Intel HDA driver");
70
71 #define SFX "hda-intel: "
72
73 /*
74 * registers
75 */
76 #define ICH6_REG_GCAP 0x00
77 #define ICH6_REG_VMIN 0x02
78 #define ICH6_REG_VMAJ 0x03
79 #define ICH6_REG_OUTPAY 0x04
80 #define ICH6_REG_INPAY 0x06
81 #define ICH6_REG_GCTL 0x08
82 #define ICH6_REG_WAKEEN 0x0c
83 #define ICH6_REG_STATESTS 0x0e
84 #define ICH6_REG_GSTS 0x10
85 #define ICH6_REG_INTCTL 0x20
86 #define ICH6_REG_INTSTS 0x24
87 #define ICH6_REG_WALCLK 0x30
88 #define ICH6_REG_SYNC 0x34
89 #define ICH6_REG_CORBLBASE 0x40
90 #define ICH6_REG_CORBUBASE 0x44
91 #define ICH6_REG_CORBWP 0x48
92 #define ICH6_REG_CORBRP 0x4A
93 #define ICH6_REG_CORBCTL 0x4c
94 #define ICH6_REG_CORBSTS 0x4d
95 #define ICH6_REG_CORBSIZE 0x4e
96
97 #define ICH6_REG_RIRBLBASE 0x50
98 #define ICH6_REG_RIRBUBASE 0x54
99 #define ICH6_REG_RIRBWP 0x58
100 #define ICH6_REG_RINTCNT 0x5a
101 #define ICH6_REG_RIRBCTL 0x5c
102 #define ICH6_REG_RIRBSTS 0x5d
103 #define ICH6_REG_RIRBSIZE 0x5e
104
105 #define ICH6_REG_IC 0x60
106 #define ICH6_REG_IR 0x64
107 #define ICH6_REG_IRS 0x68
108 #define ICH6_IRS_VALID (1<<1)
109 #define ICH6_IRS_BUSY (1<<0)
110
111 #define ICH6_REG_DPLBASE 0x70
112 #define ICH6_REG_DPUBASE 0x74
113 #define ICH6_DPLBASE_ENABLE 0x1 /* Enable position buffer */
114
115 /* SD offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
116 enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
117
118 /* stream register offsets from stream base */
119 #define ICH6_REG_SD_CTL 0x00
120 #define ICH6_REG_SD_STS 0x03
121 #define ICH6_REG_SD_LPIB 0x04
122 #define ICH6_REG_SD_CBL 0x08
123 #define ICH6_REG_SD_LVI 0x0c
124 #define ICH6_REG_SD_FIFOW 0x0e
125 #define ICH6_REG_SD_FIFOSIZE 0x10
126 #define ICH6_REG_SD_FORMAT 0x12
127 #define ICH6_REG_SD_BDLPL 0x18
128 #define ICH6_REG_SD_BDLPU 0x1c
129
130 /* PCI space */
131 #define ICH6_PCIREG_TCSEL 0x44
132
133 /*
134 * other constants
135 */
136
137 /* max number of SDs */
138 #define MAX_ICH6_DEV 8
139 /* max number of fragments - we may use more if allocating more pages for BDL */
140 #define AZX_MAX_FRAG (PAGE_SIZE / (MAX_ICH6_DEV * 16))
141 /* max buffer size - no h/w limit, you can increase as you like */
142 #define AZX_MAX_BUF_SIZE (1024*1024*1024)
143 /* max number of PCM devics per card */
144 #define AZX_MAX_PCMS 8
145
146 /* RIRB int mask: overrun[2], response[0] */
147 #define RIRB_INT_RESPONSE 0x01
148 #define RIRB_INT_OVERRUN 0x04
149 #define RIRB_INT_MASK 0x05
150
151 /* STATESTS int mask: SD2,SD1,SD0 */
152 #define STATESTS_INT_MASK 0x07
153 #define AZX_MAX_CODECS 3
154
155 /* SD_CTL bits */
156 #define SD_CTL_STREAM_RESET 0x01 /* stream reset bit */
157 #define SD_CTL_DMA_START 0x02 /* stream DMA start bit */
158 #define SD_CTL_STREAM_TAG_MASK (0xf << 20)
159 #define SD_CTL_STREAM_TAG_SHIFT 20
160
161 /* SD_CTL and SD_STS */
162 #define SD_INT_DESC_ERR 0x10 /* descriptor error interrupt */
163 #define SD_INT_FIFO_ERR 0x08 /* FIFO error interrupt */
164 #define SD_INT_COMPLETE 0x04 /* completion interrupt */
165 #define SD_INT_MASK (SD_INT_DESC_ERR|SD_INT_FIFO_ERR|SD_INT_COMPLETE)
166
167 /* SD_STS */
168 #define SD_STS_FIFO_READY 0x20 /* FIFO ready */
169
170 /* INTCTL and INTSTS */
171 #define ICH6_INT_ALL_STREAM 0xff /* all stream interrupts */
172 #define ICH6_INT_CTRL_EN 0x40000000 /* controller interrupt enable bit */
173 #define ICH6_INT_GLOBAL_EN 0x80000000 /* global interrupt enable bit */
174
175 /* GCTL reset bit */
176 #define ICH6_GCTL_RESET (1<<0)
177
178 /* CORB/RIRB control, read/write pointer */
179 #define ICH6_RBCTL_DMA_EN 0x02 /* enable DMA */
180 #define ICH6_RBCTL_IRQ_EN 0x01 /* enable IRQ */
181 #define ICH6_RBRWP_CLR 0x8000 /* read/write pointer clear */
182 /* below are so far hardcoded - should read registers in future */
183 #define ICH6_MAX_CORB_ENTRIES 256
184 #define ICH6_MAX_RIRB_ENTRIES 256
185
186
187 /*
188 * Use CORB/RIRB for communication from/to codecs.
189 * This is the way recommended by Intel (see below).
190 */
191 #define USE_CORB_RIRB
192
193 /*
194 * Define this if use the position buffer instead of reading SD_LPIB
195 * It's not used as default since SD_LPIB seems to give more accurate position
196 */
197 /* #define USE_POSBUF */
198
199 /*
200 */
201
202 typedef struct snd_azx azx_t;
203 typedef struct snd_azx_rb azx_rb_t;
204 typedef struct snd_azx_dev azx_dev_t;
205
206 struct snd_azx_dev {
207 u32 *bdl; /* virtual address of the BDL */
208 dma_addr_t bdl_addr; /* physical address of the BDL */
209 volatile u32 *posbuf; /* position buffer pointer */
210
211 unsigned int bufsize; /* size of the play buffer in bytes */
212 unsigned int fragsize; /* size of each period in bytes */
213 unsigned int frags; /* number for period in the play buffer */
214 unsigned int fifo_size; /* FIFO size */
215
216 void __iomem *sd_addr; /* stream descriptor pointer */
217
218 u32 sd_int_sta_mask; /* stream int status mask */
219
220 /* pcm support */
221 snd_pcm_substream_t *substream; /* assigned substream, set in PCM open */
222 unsigned int format_val; /* format value to be set in the controller and the codec */
223 unsigned char stream_tag; /* assigned stream */
224 unsigned char index; /* stream index */
225
226 unsigned int opened: 1;
227 unsigned int running: 1;
228 };
229
230 /* CORB/RIRB */
231 struct snd_azx_rb {
232 u32 *buf; /* CORB/RIRB buffer
233 * Each CORB entry is 4byte, RIRB is 8byte
234 */
235 dma_addr_t addr; /* physical address of CORB/RIRB buffer */
236 /* for RIRB */
237 unsigned short rp, wp; /* read/write pointers */
238 int cmds; /* number of pending requests */
239 u32 res; /* last read value */
240 };
241
242 struct snd_azx {
243 snd_card_t *card;
244 struct pci_dev *pci;
245
246 /* pci resources */
247 unsigned long addr;
248 void __iomem *remap_addr;
249 int irq;
250
251 /* locks */
252 spinlock_t reg_lock;
253 struct semaphore open_mutex;
254
255 /* streams */
256 azx_dev_t azx_dev[MAX_ICH6_DEV];
257
258 /* PCM */
259 unsigned int pcm_devs;
260 snd_pcm_t *pcm[AZX_MAX_PCMS];
261
262 /* HD codec */
263 unsigned short codec_mask;
264 struct hda_bus *bus;
265
266 /* CORB/RIRB */
267 azx_rb_t corb;
268 azx_rb_t rirb;
269
270 /* BDL, CORB/RIRB and position buffers */
271 struct snd_dma_buffer bdl;
272 struct snd_dma_buffer rb;
273 struct snd_dma_buffer posbuf;
274 };
275
276 /*
277 * macros for easy use
278 */
279 #define azx_writel(chip,reg,value) \
280 writel(value, (chip)->remap_addr + ICH6_REG_##reg)
281 #define azx_readl(chip,reg) \
282 readl((chip)->remap_addr + ICH6_REG_##reg)
283 #define azx_writew(chip,reg,value) \
284 writew(value, (chip)->remap_addr + ICH6_REG_##reg)
285 #define azx_readw(chip,reg) \
286 readw((chip)->remap_addr + ICH6_REG_##reg)
287 #define azx_writeb(chip,reg,value) \
288 writeb(value, (chip)->remap_addr + ICH6_REG_##reg)
289 #define azx_readb(chip,reg) \
290 readb((chip)->remap_addr + ICH6_REG_##reg)
291
292 #define azx_sd_writel(dev,reg,value) \
293 writel(value, (dev)->sd_addr + ICH6_REG_##reg)
294 #define azx_sd_readl(dev,reg) \
295 readl((dev)->sd_addr + ICH6_REG_##reg)
296 #define azx_sd_writew(dev,reg,value) \
297 writew(value, (dev)->sd_addr + ICH6_REG_##reg)
298 #define azx_sd_readw(dev,reg) \
299 readw((dev)->sd_addr + ICH6_REG_##reg)
300 #define azx_sd_writeb(dev,reg,value) \
301 writeb(value, (dev)->sd_addr + ICH6_REG_##reg)
302 #define azx_sd_readb(dev,reg) \
303 readb((dev)->sd_addr + ICH6_REG_##reg)
304
305 /* for pcm support */
306 #define get_azx_dev(substream) (azx_dev_t*)(substream->runtime->private_data)
307
308 /* Get the upper 32bit of the given dma_addr_t
309 * Compiler should optimize and eliminate the code if dma_addr_t is 32bit
310 */
311 #define upper_32bit(addr) (sizeof(addr) > 4 ? (u32)((addr) >> 32) : (u32)0)
312
313
314 /*
315 * Interface for HD codec
316 */
317
318 #ifdef USE_CORB_RIRB
319 /*
320 * CORB / RIRB interface
321 */
322 static int azx_alloc_cmd_io(azx_t *chip)
323 {
324 int err;
325
326 /* single page (at least 4096 bytes) must suffice for both ringbuffes */
327 err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
328 PAGE_SIZE, &chip->rb);
329 if (err < 0) {
330 snd_printk(KERN_ERR SFX "cannot allocate CORB/RIRB\n");
331 return err;
332 }
333 return 0;
334 }
335
336 static void azx_init_cmd_io(azx_t *chip)
337 {
338 /* CORB set up */
339 chip->corb.addr = chip->rb.addr;
340 chip->corb.buf = (u32 *)chip->rb.area;
341 azx_writel(chip, CORBLBASE, (u32)chip->corb.addr);
342 azx_writel(chip, CORBUBASE, upper_32bit(chip->corb.addr));
343
344 /* set the corb write pointer to 0 */
345 azx_writew(chip, CORBWP, 0);
346 /* reset the corb hw read pointer */
347 azx_writew(chip, CORBRP, ICH6_RBRWP_CLR);
348 /* enable corb dma */
349 azx_writeb(chip, CORBCTL, ICH6_RBCTL_DMA_EN);
350
351 /* RIRB set up */
352 chip->rirb.addr = chip->rb.addr + 2048;
353 chip->rirb.buf = (u32 *)(chip->rb.area + 2048);
354 azx_writel(chip, RIRBLBASE, (u32)chip->rirb.addr);
355 azx_writel(chip, RIRBUBASE, upper_32bit(chip->rirb.addr));
356
357 /* reset the rirb hw write pointer */
358 azx_writew(chip, RIRBWP, ICH6_RBRWP_CLR);
359 /* set N=1, get RIRB response interrupt for new entry */
360 azx_writew(chip, RINTCNT, 1);
361 /* enable rirb dma and response irq */
362 #ifdef USE_CORB_RIRB
363 azx_writeb(chip, RIRBCTL, ICH6_RBCTL_DMA_EN | ICH6_RBCTL_IRQ_EN);
364 #else
365 azx_writeb(chip, RIRBCTL, ICH6_RBCTL_DMA_EN);
366 #endif
367 chip->rirb.rp = chip->rirb.cmds = 0;
368 }
369
370 static void azx_free_cmd_io(azx_t *chip)
371 {
372 /* disable ringbuffer DMAs */
373 azx_writeb(chip, RIRBCTL, 0);
374 azx_writeb(chip, CORBCTL, 0);
375 }
376
377 /* send a command */
378 static int azx_send_cmd(struct hda_codec *codec, hda_nid_t nid, int direct,
379 unsigned int verb, unsigned int para)
380 {
381 azx_t *chip = codec->bus->private_data;
382 unsigned int wp;
383 u32 val;
384
385 val = (u32)(codec->addr & 0x0f) << 28;
386 val |= (u32)direct << 27;
387 val |= (u32)nid << 20;
388 val |= verb << 8;
389 val |= para;
390
391 /* add command to corb */
392 wp = azx_readb(chip, CORBWP);
393 wp++;
394 wp %= ICH6_MAX_CORB_ENTRIES;
395
396 spin_lock_irq(&chip->reg_lock);
397 chip->rirb.cmds++;
398 chip->corb.buf[wp] = cpu_to_le32(val);
399 azx_writel(chip, CORBWP, wp);
400 spin_unlock_irq(&chip->reg_lock);
401
402 return 0;
403 }
404
405 #define ICH6_RIRB_EX_UNSOL_EV (1<<4)
406
407 /* retrieve RIRB entry - called from interrupt handler */
408 static void azx_update_rirb(azx_t *chip)
409 {
410 unsigned int rp, wp;
411 u32 res, res_ex;
412
413 wp = azx_readb(chip, RIRBWP);
414 if (wp == chip->rirb.wp)
415 return;
416 chip->rirb.wp = wp;
417
418 while (chip->rirb.rp != wp) {
419 chip->rirb.rp++;
420 chip->rirb.rp %= ICH6_MAX_RIRB_ENTRIES;
421
422 rp = chip->rirb.rp << 1; /* an RIRB entry is 8-bytes */
423 res_ex = le32_to_cpu(chip->rirb.buf[rp + 1]);
424 res = le32_to_cpu(chip->rirb.buf[rp]);
425 if (res_ex & ICH6_RIRB_EX_UNSOL_EV)
426 snd_hda_queue_unsol_event(chip->bus, res, res_ex);
427 else if (chip->rirb.cmds) {
428 chip->rirb.cmds--;
429 chip->rirb.res = res;
430 }
431 }
432 }
433
434 /* receive a response */
435 static unsigned int azx_get_response(struct hda_codec *codec)
436 {
437 azx_t *chip = codec->bus->private_data;
438 int timeout = 50;
439
440 while (chip->rirb.cmds) {
441 if (! --timeout) {
442 snd_printk(KERN_ERR "azx_get_response timeout\n");
443 chip->rirb.rp = azx_readb(chip, RIRBWP);
444 chip->rirb.cmds = 0;
445 return -1;
446 }
447 msleep(1);
448 }
449 return chip->rirb.res; /* the last value */
450 }
451
452 #else
453 /*
454 * Use the single immediate command instead of CORB/RIRB for simplicity
455 *
456 * Note: according to Intel, this is not preferred use. The command was
457 * intended for the BIOS only, and may get confused with unsolicited
458 * responses. So, we shouldn't use it for normal operation from the
459 * driver.
460 * I left the codes, however, for debugging/testing purposes.
461 */
462
463 #define azx_alloc_cmd_io(chip) 0
464 #define azx_init_cmd_io(chip)
465 #define azx_free_cmd_io(chip)
466
467 /* send a command */
468 static int azx_send_cmd(struct hda_codec *codec, hda_nid_t nid, int direct,
469 unsigned int verb, unsigned int para)
470 {
471 azx_t *chip = codec->bus->private_data;
472 u32 val;
473 int timeout = 50;
474
475 val = (u32)(codec->addr & 0x0f) << 28;
476 val |= (u32)direct << 27;
477 val |= (u32)nid << 20;
478 val |= verb << 8;
479 val |= para;
480
481 while (timeout--) {
482 /* check ICB busy bit */
483 if (! (azx_readw(chip, IRS) & ICH6_IRS_BUSY)) {
484 /* Clear IRV valid bit */
485 azx_writew(chip, IRS, azx_readw(chip, IRS) | ICH6_IRS_VALID);
486 azx_writel(chip, IC, val);
487 azx_writew(chip, IRS, azx_readw(chip, IRS) | ICH6_IRS_BUSY);
488 return 0;
489 }
490 udelay(1);
491 }
492 snd_printd(SFX "send_cmd timeout: IRS=0x%x, val=0x%x\n", azx_readw(chip, IRS), val);
493 return -EIO;
494 }
495
496 /* receive a response */
497 static unsigned int azx_get_response(struct hda_codec *codec)
498 {
499 azx_t *chip = codec->bus->private_data;
500 int timeout = 50;
501
502 while (timeout--) {
503 /* check IRV busy bit */
504 if (azx_readw(chip, IRS) & ICH6_IRS_VALID)
505 return azx_readl(chip, IR);
506 udelay(1);
507 }
508 snd_printd(SFX "get_response timeout: IRS=0x%x\n", azx_readw(chip, IRS));
509 return (unsigned int)-1;
510 }
511
512 #define azx_update_rirb(chip)
513
514 #endif /* USE_CORB_RIRB */
515
516 /* reset codec link */
517 static int azx_reset(azx_t *chip)
518 {
519 int count;
520
521 /* reset controller */
522 azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~ICH6_GCTL_RESET);
523
524 count = 50;
525 while (azx_readb(chip, GCTL) && --count)
526 msleep(1);
527
528 /* delay for >= 100us for codec PLL to settle per spec
529 * Rev 0.9 section 5.5.1
530 */
531 msleep(1);
532
533 /* Bring controller out of reset */
534 azx_writeb(chip, GCTL, azx_readb(chip, GCTL) | ICH6_GCTL_RESET);
535
536 count = 50;
537 while (! azx_readb(chip, GCTL) && --count)
538 msleep(1);
539
540 /* Brent Chartrand said to wait >= 540us for codecs to intialize */
541 msleep(1);
542
543 /* check to see if controller is ready */
544 if (! azx_readb(chip, GCTL)) {
545 snd_printd("azx_reset: controller not ready!\n");
546 return -EBUSY;
547 }
548
549 /* detect codecs */
550 if (! chip->codec_mask) {
551 chip->codec_mask = azx_readw(chip, STATESTS);
552 snd_printdd("codec_mask = 0x%x\n", chip->codec_mask);
553 }
554
555 return 0;
556 }
557
558
559 /*
560 * Lowlevel interface
561 */
562
563 /* enable interrupts */
564 static void azx_int_enable(azx_t *chip)
565 {
566 /* enable controller CIE and GIE */
567 azx_writel(chip, INTCTL, azx_readl(chip, INTCTL) |
568 ICH6_INT_CTRL_EN | ICH6_INT_GLOBAL_EN);
569 }
570
571 /* disable interrupts */
572 static void azx_int_disable(azx_t *chip)
573 {
574 int i;
575
576 /* disable interrupts in stream descriptor */
577 for (i = 0; i < MAX_ICH6_DEV; i++) {
578 azx_dev_t *azx_dev = &chip->azx_dev[i];
579 azx_sd_writeb(azx_dev, SD_CTL,
580 azx_sd_readb(azx_dev, SD_CTL) & ~SD_INT_MASK);
581 }
582
583 /* disable SIE for all streams */
584 azx_writeb(chip, INTCTL, 0);
585
586 /* disable controller CIE and GIE */
587 azx_writel(chip, INTCTL, azx_readl(chip, INTCTL) &
588 ~(ICH6_INT_CTRL_EN | ICH6_INT_GLOBAL_EN));
589 }
590
591 /* clear interrupts */
592 static void azx_int_clear(azx_t *chip)
593 {
594 int i;
595
596 /* clear stream status */
597 for (i = 0; i < MAX_ICH6_DEV; i++) {
598 azx_dev_t *azx_dev = &chip->azx_dev[i];
599 azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK);
600 }
601
602 /* clear STATESTS */
603 azx_writeb(chip, STATESTS, STATESTS_INT_MASK);
604
605 /* clear rirb status */
606 azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
607
608 /* clear int status */
609 azx_writel(chip, INTSTS, ICH6_INT_CTRL_EN | ICH6_INT_ALL_STREAM);
610 }
611
612 /* start a stream */
613 static void azx_stream_start(azx_t *chip, azx_dev_t *azx_dev)
614 {
615 /* enable SIE */
616 azx_writeb(chip, INTCTL,
617 azx_readb(chip, INTCTL) | (1 << azx_dev->index));
618 /* set DMA start and interrupt mask */
619 azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) |
620 SD_CTL_DMA_START | SD_INT_MASK);
621 }
622
623 /* stop a stream */
624 static void azx_stream_stop(azx_t *chip, azx_dev_t *azx_dev)
625 {
626 /* stop DMA */
627 azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) &
628 ~(SD_CTL_DMA_START | SD_INT_MASK));
629 azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK); /* to be sure */
630 /* disable SIE */
631 azx_writeb(chip, INTCTL,
632 azx_readb(chip, INTCTL) & ~(1 << azx_dev->index));
633 }
634
635
636 /*
637 * initialize the chip
638 */
639 static void azx_init_chip(azx_t *chip)
640 {
641 unsigned char tcsel_reg;
642
643 /* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
644 * TCSEL == Traffic Class Select Register, which sets PCI express QOS
645 * Ensuring these bits are 0 clears playback static on some HD Audio codecs
646 */
647 pci_read_config_byte (chip->pci, ICH6_PCIREG_TCSEL, &tcsel_reg);
648 pci_write_config_byte(chip->pci, ICH6_PCIREG_TCSEL, tcsel_reg & 0xf8);
649
650 /* reset controller */
651 azx_reset(chip);
652
653 /* initialize interrupts */
654 azx_int_clear(chip);
655 azx_int_enable(chip);
656
657 /* initialize the codec command I/O */
658 azx_init_cmd_io(chip);
659
660 #ifdef USE_POSBUF
661 /* program the position buffer */
662 azx_writel(chip, DPLBASE, (u32)chip->posbuf.addr);
663 azx_writel(chip, DPUBASE, upper_32bit(chip->posbuf.addr));
664 #endif
665 }
666
667
668 /*
669 * interrupt handler
670 */
671 static irqreturn_t azx_interrupt(int irq, void* dev_id, struct pt_regs *regs)
672 {
673 azx_t *chip = dev_id;
674 azx_dev_t *azx_dev;
675 u32 status;
676 int i;
677
678 spin_lock(&chip->reg_lock);
679
680 status = azx_readl(chip, INTSTS);
681 if (status == 0) {
682 spin_unlock(&chip->reg_lock);
683 return IRQ_NONE;
684 }
685
686 for (i = 0; i < MAX_ICH6_DEV; i++) {
687 azx_dev = &chip->azx_dev[i];
688 if (status & azx_dev->sd_int_sta_mask) {
689 azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK);
690 if (azx_dev->substream && azx_dev->running) {
691 spin_unlock(&chip->reg_lock);
692 snd_pcm_period_elapsed(azx_dev->substream);
693 spin_lock(&chip->reg_lock);
694 }
695 }
696 }
697
698 /* clear rirb int */
699 status = azx_readb(chip, RIRBSTS);
700 if (status & RIRB_INT_MASK) {
701 if (status & RIRB_INT_RESPONSE)
702 azx_update_rirb(chip);
703 azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
704 }
705
706 #if 0
707 /* clear state status int */
708 if (azx_readb(chip, STATESTS) & 0x04)
709 azx_writeb(chip, STATESTS, 0x04);
710 #endif
711 spin_unlock(&chip->reg_lock);
712
713 return IRQ_HANDLED;
714 }
715
716
717 /*
718 * set up BDL entries
719 */
720 static void azx_setup_periods(azx_dev_t *azx_dev)
721 {
722 u32 *bdl = azx_dev->bdl;
723 dma_addr_t dma_addr = azx_dev->substream->runtime->dma_addr;
724 int idx;
725
726 /* reset BDL address */
727 azx_sd_writel(azx_dev, SD_BDLPL, 0);
728 azx_sd_writel(azx_dev, SD_BDLPU, 0);
729
730 /* program the initial BDL entries */
731 for (idx = 0; idx < azx_dev->frags; idx++) {
732 unsigned int off = idx << 2; /* 4 dword step */
733 dma_addr_t addr = dma_addr + idx * azx_dev->fragsize;
734 /* program the address field of the BDL entry */
735 bdl[off] = cpu_to_le32((u32)addr);
736 bdl[off+1] = cpu_to_le32(upper_32bit(addr));
737
738 /* program the size field of the BDL entry */
739 bdl[off+2] = cpu_to_le32(azx_dev->fragsize);
740
741 /* program the IOC to enable interrupt when buffer completes */
742 bdl[off+3] = cpu_to_le32(0x01);
743 }
744 }
745
746 /*
747 * set up the SD for streaming
748 */
749 static int azx_setup_controller(azx_t *chip, azx_dev_t *azx_dev)
750 {
751 unsigned char val;
752 int timeout;
753
754 /* make sure the run bit is zero for SD */
755 azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) & ~SD_CTL_DMA_START);
756 /* reset stream */
757 azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) | SD_CTL_STREAM_RESET);
758 udelay(3);
759 timeout = 300;
760 while (!((val = azx_sd_readb(azx_dev, SD_CTL)) & SD_CTL_STREAM_RESET) &&
761 --timeout)
762 ;
763 val &= ~SD_CTL_STREAM_RESET;
764 azx_sd_writeb(azx_dev, SD_CTL, val);
765 udelay(3);
766
767 timeout = 300;
768 /* waiting for hardware to report that the stream is out of reset */
769 while (((val = azx_sd_readb(azx_dev, SD_CTL)) & SD_CTL_STREAM_RESET) &&
770 --timeout)
771 ;
772
773 /* program the stream_tag */
774 azx_sd_writel(azx_dev, SD_CTL,
775 (azx_sd_readl(azx_dev, SD_CTL) & ~SD_CTL_STREAM_TAG_MASK) |
776 (azx_dev->stream_tag << SD_CTL_STREAM_TAG_SHIFT));
777
778 /* program the length of samples in cyclic buffer */
779 azx_sd_writel(azx_dev, SD_CBL, azx_dev->bufsize);
780
781 /* program the stream format */
782 /* this value needs to be the same as the one programmed */
783 azx_sd_writew(azx_dev, SD_FORMAT, azx_dev->format_val);
784
785 /* program the stream LVI (last valid index) of the BDL */
786 azx_sd_writew(azx_dev, SD_LVI, azx_dev->frags - 1);
787
788 /* program the BDL address */
789 /* lower BDL address */
790 azx_sd_writel(azx_dev, SD_BDLPL, (u32)azx_dev->bdl_addr);
791 /* upper BDL address */
792 azx_sd_writel(azx_dev, SD_BDLPU, upper_32bit(azx_dev->bdl_addr));
793
794 #ifdef USE_POSBUF
795 /* enable the position buffer */
796 if (! (azx_readl(chip, DPLBASE) & ICH6_DPLBASE_ENABLE))
797 azx_writel(chip, DPLBASE, (u32)chip->posbuf.addr | ICH6_DPLBASE_ENABLE);
798 #endif
799 /* set the interrupt enable bits in the descriptor control register */
800 azx_sd_writel(azx_dev, SD_CTL, azx_sd_readl(azx_dev, SD_CTL) | SD_INT_MASK);
801
802 return 0;
803 }
804
805
806 /*
807 * Codec initialization
808 */
809
810 static int __devinit azx_codec_create(azx_t *chip, const char *model)
811 {
812 struct hda_bus_template bus_temp;
813 int c, codecs, err;
814
815 memset(&bus_temp, 0, sizeof(bus_temp));
816 bus_temp.private_data = chip;
817 bus_temp.modelname = model;
818 bus_temp.pci = chip->pci;
819 bus_temp.ops.command = azx_send_cmd;
820 bus_temp.ops.get_response = azx_get_response;
821
822 if ((err = snd_hda_bus_new(chip->card, &bus_temp, &chip->bus)) < 0)
823 return err;
824
825 codecs = 0;
826 for (c = 0; c < AZX_MAX_CODECS; c++) {
827 if (chip->codec_mask & (1 << c)) {
828 err = snd_hda_codec_new(chip->bus, c, NULL);
829 if (err < 0)
830 continue;
831 codecs++;
832 }
833 }
834 if (! codecs) {
835 snd_printk(KERN_ERR SFX "no codecs initialized\n");
836 return -ENXIO;
837 }
838
839 return 0;
840 }
841
842
843 /*
844 * PCM support
845 */
846
847 /* assign a stream for the PCM */
848 static inline azx_dev_t *azx_assign_device(azx_t *chip, int stream)
849 {
850 int dev, i;
851 dev = stream == SNDRV_PCM_STREAM_PLAYBACK ? 4 : 0;
852 for (i = 0; i < 4; i++, dev++)
853 if (! chip->azx_dev[dev].opened) {
854 chip->azx_dev[dev].opened = 1;
855 return &chip->azx_dev[dev];
856 }
857 return NULL;
858 }
859
860 /* release the assigned stream */
861 static inline void azx_release_device(azx_dev_t *azx_dev)
862 {
863 azx_dev->opened = 0;
864 }
865
866 static snd_pcm_hardware_t azx_pcm_hw = {
867 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
868 SNDRV_PCM_INFO_BLOCK_TRANSFER |
869 SNDRV_PCM_INFO_MMAP_VALID |
870 SNDRV_PCM_INFO_PAUSE |
871 SNDRV_PCM_INFO_RESUME),
872 .formats = SNDRV_PCM_FMTBIT_S16_LE,
873 .rates = SNDRV_PCM_RATE_48000,
874 .rate_min = 48000,
875 .rate_max = 48000,
876 .channels_min = 2,
877 .channels_max = 2,
878 .buffer_bytes_max = AZX_MAX_BUF_SIZE,
879 .period_bytes_min = 128,
880 .period_bytes_max = AZX_MAX_BUF_SIZE / 2,
881 .periods_min = 2,
882 .periods_max = AZX_MAX_FRAG,
883 .fifo_size = 0,
884 };
885
886 struct azx_pcm {
887 azx_t *chip;
888 struct hda_codec *codec;
889 struct hda_pcm_stream *hinfo[2];
890 };
891
892 static int azx_pcm_open(snd_pcm_substream_t *substream)
893 {
894 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
895 struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
896 azx_t *chip = apcm->chip;
897 azx_dev_t *azx_dev;
898 snd_pcm_runtime_t *runtime = substream->runtime;
899 unsigned long flags;
900 int err;
901
902 down(&chip->open_mutex);
903 azx_dev = azx_assign_device(chip, substream->stream);
904 if (azx_dev == NULL) {
905 up(&chip->open_mutex);
906 return -EBUSY;
907 }
908 runtime->hw = azx_pcm_hw;
909 runtime->hw.channels_min = hinfo->channels_min;
910 runtime->hw.channels_max = hinfo->channels_max;
911 runtime->hw.formats = hinfo->formats;
912 runtime->hw.rates = hinfo->rates;
913 snd_pcm_limit_hw_rates(runtime);
914 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
915 if ((err = hinfo->ops.open(hinfo, apcm->codec, substream)) < 0) {
916 azx_release_device(azx_dev);
917 up(&chip->open_mutex);
918 return err;
919 }
920 spin_lock_irqsave(&chip->reg_lock, flags);
921 azx_dev->substream = substream;
922 azx_dev->running = 0;
923 spin_unlock_irqrestore(&chip->reg_lock, flags);
924
925 runtime->private_data = azx_dev;
926 up(&chip->open_mutex);
927 return 0;
928 }
929
930 static int azx_pcm_close(snd_pcm_substream_t *substream)
931 {
932 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
933 struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
934 azx_t *chip = apcm->chip;
935 azx_dev_t *azx_dev = get_azx_dev(substream);
936 unsigned long flags;
937
938 down(&chip->open_mutex);
939 spin_lock_irqsave(&chip->reg_lock, flags);
940 azx_dev->substream = NULL;
941 azx_dev->running = 0;
942 spin_unlock_irqrestore(&chip->reg_lock, flags);
943 azx_release_device(azx_dev);
944 hinfo->ops.close(hinfo, apcm->codec, substream);
945 up(&chip->open_mutex);
946 return 0;
947 }
948
949 static int azx_pcm_hw_params(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *hw_params)
950 {
951 return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
952 }
953
954 static int azx_pcm_hw_free(snd_pcm_substream_t *substream)
955 {
956 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
957 azx_dev_t *azx_dev = get_azx_dev(substream);
958 struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
959
960 /* reset BDL address */
961 azx_sd_writel(azx_dev, SD_BDLPL, 0);
962 azx_sd_writel(azx_dev, SD_BDLPU, 0);
963 azx_sd_writel(azx_dev, SD_CTL, 0);
964
965 hinfo->ops.cleanup(hinfo, apcm->codec, substream);
966
967 return snd_pcm_lib_free_pages(substream);
968 }
969
970 static int azx_pcm_prepare(snd_pcm_substream_t *substream)
971 {
972 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
973 azx_t *chip = apcm->chip;
974 azx_dev_t *azx_dev = get_azx_dev(substream);
975 struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
976 snd_pcm_runtime_t *runtime = substream->runtime;
977
978 azx_dev->bufsize = snd_pcm_lib_buffer_bytes(substream);
979 azx_dev->fragsize = snd_pcm_lib_period_bytes(substream);
980 azx_dev->frags = azx_dev->bufsize / azx_dev->fragsize;
981 azx_dev->format_val = snd_hda_calc_stream_format(runtime->rate,
982 runtime->channels,
983 runtime->format,
984 hinfo->maxbps);
985 if (! azx_dev->format_val) {
986 snd_printk(KERN_ERR SFX "invalid format_val, rate=%d, ch=%d, format=%d\n",
987 runtime->rate, runtime->channels, runtime->format);
988 return -EINVAL;
989 }
990
991 snd_printdd("azx_pcm_prepare: bufsize=0x%x, fragsize=0x%x, format=0x%x\n",
992 azx_dev->bufsize, azx_dev->fragsize, azx_dev->format_val);
993 azx_setup_periods(azx_dev);
994 azx_setup_controller(chip, azx_dev);
995 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
996 azx_dev->fifo_size = azx_sd_readw(azx_dev, SD_FIFOSIZE) + 1;
997 else
998 azx_dev->fifo_size = 0;
999
1000 return hinfo->ops.prepare(hinfo, apcm->codec, azx_dev->stream_tag,
1001 azx_dev->format_val, substream);
1002 }
1003
1004 static int azx_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
1005 {
1006 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1007 azx_dev_t *azx_dev = get_azx_dev(substream);
1008 azx_t *chip = apcm->chip;
1009 int err = 0;
1010
1011 spin_lock(&chip->reg_lock);
1012 switch (cmd) {
1013 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1014 case SNDRV_PCM_TRIGGER_RESUME:
1015 case SNDRV_PCM_TRIGGER_START:
1016 azx_stream_start(chip, azx_dev);
1017 azx_dev->running = 1;
1018 break;
1019 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1020 case SNDRV_PCM_TRIGGER_STOP:
1021 azx_stream_stop(chip, azx_dev);
1022 azx_dev->running = 0;
1023 break;
1024 default:
1025 err = -EINVAL;
1026 }
1027 spin_unlock(&chip->reg_lock);
1028 if (cmd == SNDRV_PCM_TRIGGER_PAUSE_PUSH ||
1029 cmd == SNDRV_PCM_TRIGGER_STOP) {
1030 int timeout = 5000;
1031 while (azx_sd_readb(azx_dev, SD_CTL) & SD_CTL_DMA_START && --timeout)
1032 ;
1033 }
1034 return err;
1035 }
1036
1037 static snd_pcm_uframes_t azx_pcm_pointer(snd_pcm_substream_t *substream)
1038 {
1039 azx_dev_t *azx_dev = get_azx_dev(substream);
1040 unsigned int pos;
1041
1042 #ifdef USE_POSBUF
1043 /* use the position buffer */
1044 pos = *azx_dev->posbuf;
1045 #else
1046 /* read LPIB */
1047 pos = azx_sd_readl(azx_dev, SD_LPIB) + azx_dev->fifo_size;
1048 #endif
1049 if (pos >= azx_dev->bufsize)
1050 pos = 0;
1051 return bytes_to_frames(substream->runtime, pos);
1052 }
1053
1054 static snd_pcm_ops_t azx_pcm_ops = {
1055 .open = azx_pcm_open,
1056 .close = azx_pcm_close,
1057 .ioctl = snd_pcm_lib_ioctl,
1058 .hw_params = azx_pcm_hw_params,
1059 .hw_free = azx_pcm_hw_free,
1060 .prepare = azx_pcm_prepare,
1061 .trigger = azx_pcm_trigger,
1062 .pointer = azx_pcm_pointer,
1063 };
1064
1065 static void azx_pcm_free(snd_pcm_t *pcm)
1066 {
1067 kfree(pcm->private_data);
1068 }
1069
1070 static int __devinit create_codec_pcm(azx_t *chip, struct hda_codec *codec,
1071 struct hda_pcm *cpcm, int pcm_dev)
1072 {
1073 int err;
1074 snd_pcm_t *pcm;
1075 struct azx_pcm *apcm;
1076
1077 snd_assert(cpcm->stream[0].substreams || cpcm->stream[1].substreams, return -EINVAL);
1078 snd_assert(cpcm->name, return -EINVAL);
1079
1080 err = snd_pcm_new(chip->card, cpcm->name, pcm_dev,
1081 cpcm->stream[0].substreams, cpcm->stream[1].substreams,
1082 &pcm);
1083 if (err < 0)
1084 return err;
1085 strcpy(pcm->name, cpcm->name);
1086 apcm = kmalloc(sizeof(*apcm), GFP_KERNEL);
1087 if (apcm == NULL)
1088 return -ENOMEM;
1089 apcm->chip = chip;
1090 apcm->codec = codec;
1091 apcm->hinfo[0] = &cpcm->stream[0];
1092 apcm->hinfo[1] = &cpcm->stream[1];
1093 pcm->private_data = apcm;
1094 pcm->private_free = azx_pcm_free;
1095 if (cpcm->stream[0].substreams)
1096 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &azx_pcm_ops);
1097 if (cpcm->stream[1].substreams)
1098 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &azx_pcm_ops);
1099 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1100 snd_dma_pci_data(chip->pci),
1101 1024 * 64, 1024 * 128);
1102 chip->pcm[pcm_dev] = pcm;
1103
1104 return 0;
1105 }
1106
1107 static int __devinit azx_pcm_create(azx_t *chip)
1108 {
1109 struct list_head *p;
1110 struct hda_codec *codec;
1111 int c, err;
1112 int pcm_dev;
1113
1114 if ((err = snd_hda_build_pcms(chip->bus)) < 0)
1115 return err;
1116
1117 pcm_dev = 0;
1118 list_for_each(p, &chip->bus->codec_list) {
1119 codec = list_entry(p, struct hda_codec, list);
1120 for (c = 0; c < codec->num_pcms; c++) {
1121 if (pcm_dev >= AZX_MAX_PCMS) {
1122 snd_printk(KERN_ERR SFX "Too many PCMs\n");
1123 return -EINVAL;
1124 }
1125 err = create_codec_pcm(chip, codec, &codec->pcm_info[c], pcm_dev);
1126 if (err < 0)
1127 return err;
1128 pcm_dev++;
1129 }
1130 }
1131 return 0;
1132 }
1133
1134 /*
1135 * mixer creation - all stuff is implemented in hda module
1136 */
1137 static int __devinit azx_mixer_create(azx_t *chip)
1138 {
1139 return snd_hda_build_controls(chip->bus);
1140 }
1141
1142
1143 /*
1144 * initialize SD streams
1145 */
1146 static int __devinit azx_init_stream(azx_t *chip)
1147 {
1148 int i;
1149
1150 /* initialize each stream (aka device)
1151 * assign the starting bdl address to each stream (device) and initialize
1152 */
1153 for (i = 0; i < MAX_ICH6_DEV; i++) {
1154 unsigned int off = sizeof(u32) * (i * AZX_MAX_FRAG * 4);
1155 azx_dev_t *azx_dev = &chip->azx_dev[i];
1156 azx_dev->bdl = (u32 *)(chip->bdl.area + off);
1157 azx_dev->bdl_addr = chip->bdl.addr + off;
1158 #ifdef USE_POSBUF
1159 azx_dev->posbuf = (volatile u32 *)(chip->posbuf.area + i * 8);
1160 #endif
1161 /* offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
1162 azx_dev->sd_addr = chip->remap_addr + (0x20 * i + 0x80);
1163 /* int mask: SDI0=0x01, SDI1=0x02, ... SDO3=0x80 */
1164 azx_dev->sd_int_sta_mask = 1 << i;
1165 /* stream tag: must be non-zero and unique */
1166 azx_dev->index = i;
1167 azx_dev->stream_tag = i + 1;
1168 }
1169
1170 return 0;
1171 }
1172
1173
1174 #ifdef CONFIG_PM
1175 /*
1176 * power management
1177 */
1178 static int azx_suspend(snd_card_t *card, pm_message_t state)
1179 {
1180 azx_t *chip = card->pm_private_data;
1181 int i;
1182
1183 for (i = 0; i < chip->pcm_devs; i++)
1184 if (chip->pcm[i])
1185 snd_pcm_suspend_all(chip->pcm[i]);
1186 snd_hda_suspend(chip->bus, state);
1187 azx_free_cmd_io(chip);
1188 pci_disable_device(chip->pci);
1189 return 0;
1190 }
1191
1192 static int azx_resume(snd_card_t *card)
1193 {
1194 azx_t *chip = card->pm_private_data;
1195
1196 pci_enable_device(chip->pci);
1197 pci_set_master(chip->pci);
1198 azx_init_chip(chip);
1199 snd_hda_resume(chip->bus);
1200 return 0;
1201 }
1202 #endif /* CONFIG_PM */
1203
1204
1205 /*
1206 * destructor
1207 */
1208 static int azx_free(azx_t *chip)
1209 {
1210 if (chip->remap_addr) {
1211 int i;
1212
1213 for (i = 0; i < MAX_ICH6_DEV; i++)
1214 azx_stream_stop(chip, &chip->azx_dev[i]);
1215
1216 /* disable interrupts */
1217 azx_int_disable(chip);
1218 azx_int_clear(chip);
1219
1220 /* disable CORB/RIRB */
1221 azx_free_cmd_io(chip);
1222
1223 /* disable position buffer */
1224 azx_writel(chip, DPLBASE, 0);
1225 azx_writel(chip, DPUBASE, 0);
1226
1227 /* wait a little for interrupts to finish */
1228 msleep(1);
1229
1230 iounmap(chip->remap_addr);
1231 }
1232
1233 if (chip->irq >= 0)
1234 free_irq(chip->irq, (void*)chip);
1235
1236 if (chip->bdl.area)
1237 snd_dma_free_pages(&chip->bdl);
1238 if (chip->rb.area)
1239 snd_dma_free_pages(&chip->rb);
1240 #ifdef USE_POSBUF
1241 if (chip->posbuf.area)
1242 snd_dma_free_pages(&chip->posbuf);
1243 #endif
1244 pci_release_regions(chip->pci);
1245 pci_disable_device(chip->pci);
1246 kfree(chip);
1247
1248 return 0;
1249 }
1250
1251 static int azx_dev_free(snd_device_t *device)
1252 {
1253 return azx_free(device->device_data);
1254 }
1255
1256 /*
1257 * constructor
1258 */
1259 static int __devinit azx_create(snd_card_t *card, struct pci_dev *pci, azx_t **rchip)
1260 {
1261 azx_t *chip;
1262 int err = 0;
1263 static snd_device_ops_t ops = {
1264 .dev_free = azx_dev_free,
1265 };
1266
1267 *rchip = NULL;
1268
1269 if ((err = pci_enable_device(pci)) < 0)
1270 return err;
1271
1272 chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
1273
1274 if (NULL == chip) {
1275 snd_printk(KERN_ERR SFX "cannot allocate chip\n");
1276 pci_disable_device(pci);
1277 return -ENOMEM;
1278 }
1279
1280 spin_lock_init(&chip->reg_lock);
1281 init_MUTEX(&chip->open_mutex);
1282 chip->card = card;
1283 chip->pci = pci;
1284 chip->irq = -1;
1285
1286 if ((err = pci_request_regions(pci, "ICH HD audio")) < 0) {
1287 kfree(chip);
1288 pci_disable_device(pci);
1289 return err;
1290 }
1291
1292 chip->addr = pci_resource_start(pci,0);
1293 chip->remap_addr = ioremap_nocache(chip->addr, pci_resource_len(pci,0));
1294 if (chip->remap_addr == NULL) {
1295 snd_printk(KERN_ERR SFX "ioremap error\n");
1296 err = -ENXIO;
1297 goto errout;
1298 }
1299
1300 if (request_irq(pci->irq, azx_interrupt, SA_INTERRUPT|SA_SHIRQ,
1301 "HDA Intel", (void*)chip)) {
1302 snd_printk(KERN_ERR SFX "unable to grab IRQ %d\n", pci->irq);
1303 err = -EBUSY;
1304 goto errout;
1305 }
1306 chip->irq = pci->irq;
1307
1308 pci_set_master(pci);
1309 synchronize_irq(chip->irq);
1310
1311 /* allocate memory for the BDL for each stream */
1312 if ((err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
1313 PAGE_SIZE, &chip->bdl)) < 0) {
1314 snd_printk(KERN_ERR SFX "cannot allocate BDL\n");
1315 goto errout;
1316 }
1317 #ifdef USE_POSBUF
1318 /* allocate memory for the position buffer */
1319 if ((err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
1320 MAX_ICH6_DEV * 8, &chip->posbuf)) < 0) {
1321 snd_printk(KERN_ERR SFX "cannot allocate posbuf\n");
1322 goto errout;
1323 }
1324 #endif
1325 /* allocate CORB/RIRB */
1326 if ((err = azx_alloc_cmd_io(chip)) < 0)
1327 goto errout;
1328
1329 /* initialize streams */
1330 azx_init_stream(chip);
1331
1332 /* initialize chip */
1333 azx_init_chip(chip);
1334
1335 /* codec detection */
1336 if (! chip->codec_mask) {
1337 snd_printk(KERN_ERR SFX "no codecs found!\n");
1338 err = -ENODEV;
1339 goto errout;
1340 }
1341
1342 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) <0) {
1343 snd_printk(KERN_ERR SFX "Error creating device [card]!\n");
1344 goto errout;
1345 }
1346
1347 *rchip = chip;
1348 return 0;
1349
1350 errout:
1351 azx_free(chip);
1352 return err;
1353 }
1354
1355 static int __devinit azx_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
1356 {
1357 static int dev;
1358 snd_card_t *card;
1359 azx_t *chip;
1360 int err = 0;
1361
1362 if (dev >= SNDRV_CARDS)
1363 return -ENODEV;
1364 if (! enable[dev]) {
1365 dev++;
1366 return -ENOENT;
1367 }
1368
1369 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1370 if (NULL == card) {
1371 snd_printk(KERN_ERR SFX "Error creating card!\n");
1372 return -ENOMEM;
1373 }
1374
1375 if ((err = azx_create(card, pci, &chip)) < 0) {
1376 snd_card_free(card);
1377 return err;
1378 }
1379
1380 strcpy(card->driver, "HDA-Intel");
1381 strcpy(card->shortname, "HDA Intel");
1382 sprintf(card->longname, "%s at 0x%lx irq %i", card->shortname, chip->addr, chip->irq);
1383
1384 /* create codec instances */
1385 if ((err = azx_codec_create(chip, model[dev])) < 0) {
1386 snd_card_free(card);
1387 return err;
1388 }
1389
1390 /* create PCM streams */
1391 if ((err = azx_pcm_create(chip)) < 0) {
1392 snd_card_free(card);
1393 return err;
1394 }
1395
1396 /* create mixer controls */
1397 if ((err = azx_mixer_create(chip)) < 0) {
1398 snd_card_free(card);
1399 return err;
1400 }
1401
1402 snd_card_set_pm_callback(card, azx_suspend, azx_resume, chip);
1403 snd_card_set_dev(card, &pci->dev);
1404
1405 if ((err = snd_card_register(card)) < 0) {
1406 snd_card_free(card);
1407 return err;
1408 }
1409
1410 pci_set_drvdata(pci, card);
1411 dev++;
1412
1413 return err;
1414 }
1415
1416 static void __devexit azx_remove(struct pci_dev *pci)
1417 {
1418 snd_card_free(pci_get_drvdata(pci));
1419 pci_set_drvdata(pci, NULL);
1420 }
1421
1422 /* PCI IDs */
1423 static struct pci_device_id azx_ids[] = {
1424 { 0x8086, 0x2668, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* ICH6 */
1425 { 0x8086, 0x27d8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* ICH7 */
1426 { 0x8086, 0x269a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* ESB2 */
1427 { 0, }
1428 };
1429 MODULE_DEVICE_TABLE(pci, azx_ids);
1430
1431 /* pci_driver definition */
1432 static struct pci_driver driver = {
1433 .name = "HDA Intel",
1434 .id_table = azx_ids,
1435 .probe = azx_probe,
1436 .remove = __devexit_p(azx_remove),
1437 SND_PCI_PM_CALLBACKS
1438 };
1439
1440 static int __init alsa_card_azx_init(void)
1441 {
1442 return pci_module_init(&driver);
1443 }
1444
1445 static void __exit alsa_card_azx_exit(void)
1446 {
1447 pci_unregister_driver(&driver);
1448 }
1449
1450 module_init(alsa_card_azx_init)
1451 module_exit(alsa_card_azx_exit)
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