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[ALSA] snd-hda-intel: Improve azx_position_ok()
[deliverable/linux.git] / sound / pci / hda / hda_intel.c
1 /*
2 *
3 * hda_intel.c - Implementation of primary alsa driver code base
4 * for Intel HD Audio.
5 *
6 * Copyright(c) 2004 Intel Corporation. All rights reserved.
7 *
8 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
9 * PeiSen Hou <pshou@realtek.com.tw>
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19 * more details.
20 *
21 * You should have received a copy of the GNU General Public License along with
22 * this program; if not, write to the Free Software Foundation, Inc., 59
23 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 *
25 * CONTACTS:
26 *
27 * Matt Jared matt.jared@intel.com
28 * Andy Kopp andy.kopp@intel.com
29 * Dan Kogan dan.d.kogan@intel.com
30 *
31 * CHANGES:
32 *
33 * 2004.12.01 Major rewrite by tiwai, merged the work of pshou
34 *
35 */
36
37 #include <asm/io.h>
38 #include <linux/delay.h>
39 #include <linux/interrupt.h>
40 #include <linux/kernel.h>
41 #include <linux/module.h>
42 #include <linux/dma-mapping.h>
43 #include <linux/moduleparam.h>
44 #include <linux/init.h>
45 #include <linux/slab.h>
46 #include <linux/pci.h>
47 #include <linux/mutex.h>
48 #include <linux/reboot.h>
49 #include <sound/core.h>
50 #include <sound/initval.h>
51 #include "hda_codec.h"
52
53
54 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
55 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
56 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
57 static char *model[SNDRV_CARDS];
58 static int position_fix[SNDRV_CARDS];
59 static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
60 static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
61 static int probe_only[SNDRV_CARDS];
62 static int single_cmd;
63 static int enable_msi = -1;
64 #ifdef CONFIG_SND_HDA_PATCH_LOADER
65 static char *patch[SNDRV_CARDS];
66 #endif
67 #ifdef CONFIG_SND_HDA_INPUT_BEEP
68 static int beep_mode[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] =
69 CONFIG_SND_HDA_INPUT_BEEP_MODE};
70 #endif
71
72 module_param_array(index, int, NULL, 0444);
73 MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
74 module_param_array(id, charp, NULL, 0444);
75 MODULE_PARM_DESC(id, "ID string for Intel HD audio interface.");
76 module_param_array(enable, bool, NULL, 0444);
77 MODULE_PARM_DESC(enable, "Enable Intel HD audio interface.");
78 module_param_array(model, charp, NULL, 0444);
79 MODULE_PARM_DESC(model, "Use the given board model.");
80 module_param_array(position_fix, int, NULL, 0444);
81 MODULE_PARM_DESC(position_fix, "Fix DMA pointer "
82 "(0 = auto, 1 = none, 2 = POSBUF).");
83 module_param_array(bdl_pos_adj, int, NULL, 0644);
84 MODULE_PARM_DESC(bdl_pos_adj, "BDL position adjustment offset.");
85 module_param_array(probe_mask, int, NULL, 0444);
86 MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
87 module_param_array(probe_only, int, NULL, 0444);
88 MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization.");
89 module_param(single_cmd, bool, 0444);
90 MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
91 "(for debugging only).");
92 module_param(enable_msi, int, 0444);
93 MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
94 #ifdef CONFIG_SND_HDA_PATCH_LOADER
95 module_param_array(patch, charp, NULL, 0444);
96 MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
97 #endif
98 #ifdef CONFIG_SND_HDA_INPUT_BEEP
99 module_param_array(beep_mode, int, NULL, 0444);
100 MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
101 "(0=off, 1=on, 2=mute switch on/off) (default=1).");
102 #endif
103
104 #ifdef CONFIG_SND_HDA_POWER_SAVE
105 static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
106 module_param(power_save, int, 0644);
107 MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
108 "(in second, 0 = disable).");
109
110 /* reset the HD-audio controller in power save mode.
111 * this may give more power-saving, but will take longer time to
112 * wake up.
113 */
114 static int power_save_controller = 1;
115 module_param(power_save_controller, bool, 0644);
116 MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
117 #endif
118
119 MODULE_LICENSE("GPL");
120 MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
121 "{Intel, ICH6M},"
122 "{Intel, ICH7},"
123 "{Intel, ESB2},"
124 "{Intel, ICH8},"
125 "{Intel, ICH9},"
126 "{Intel, ICH10},"
127 "{Intel, PCH},"
128 "{Intel, CPT},"
129 "{Intel, SCH},"
130 "{ATI, SB450},"
131 "{ATI, SB600},"
132 "{ATI, RS600},"
133 "{ATI, RS690},"
134 "{ATI, RS780},"
135 "{ATI, R600},"
136 "{ATI, RV630},"
137 "{ATI, RV610},"
138 "{ATI, RV670},"
139 "{ATI, RV635},"
140 "{ATI, RV620},"
141 "{ATI, RV770},"
142 "{VIA, VT8251},"
143 "{VIA, VT8237A},"
144 "{SiS, SIS966},"
145 "{ULI, M5461}}");
146 MODULE_DESCRIPTION("Intel HDA driver");
147
148 #ifdef CONFIG_SND_VERBOSE_PRINTK
149 #define SFX /* nop */
150 #else
151 #define SFX "hda-intel: "
152 #endif
153
154 /*
155 * registers
156 */
157 #define ICH6_REG_GCAP 0x00
158 #define ICH6_GCAP_64OK (1 << 0) /* 64bit address support */
159 #define ICH6_GCAP_NSDO (3 << 1) /* # of serial data out signals */
160 #define ICH6_GCAP_BSS (31 << 3) /* # of bidirectional streams */
161 #define ICH6_GCAP_ISS (15 << 8) /* # of input streams */
162 #define ICH6_GCAP_OSS (15 << 12) /* # of output streams */
163 #define ICH6_REG_VMIN 0x02
164 #define ICH6_REG_VMAJ 0x03
165 #define ICH6_REG_OUTPAY 0x04
166 #define ICH6_REG_INPAY 0x06
167 #define ICH6_REG_GCTL 0x08
168 #define ICH6_GCTL_RESET (1 << 0) /* controller reset */
169 #define ICH6_GCTL_FCNTRL (1 << 1) /* flush control */
170 #define ICH6_GCTL_UNSOL (1 << 8) /* accept unsol. response enable */
171 #define ICH6_REG_WAKEEN 0x0c
172 #define ICH6_REG_STATESTS 0x0e
173 #define ICH6_REG_GSTS 0x10
174 #define ICH6_GSTS_FSTS (1 << 1) /* flush status */
175 #define ICH6_REG_INTCTL 0x20
176 #define ICH6_REG_INTSTS 0x24
177 #define ICH6_REG_WALLCLK 0x30 /* 24Mhz source */
178 #define ICH6_REG_SYNC 0x34
179 #define ICH6_REG_CORBLBASE 0x40
180 #define ICH6_REG_CORBUBASE 0x44
181 #define ICH6_REG_CORBWP 0x48
182 #define ICH6_REG_CORBRP 0x4a
183 #define ICH6_CORBRP_RST (1 << 15) /* read pointer reset */
184 #define ICH6_REG_CORBCTL 0x4c
185 #define ICH6_CORBCTL_RUN (1 << 1) /* enable DMA */
186 #define ICH6_CORBCTL_CMEIE (1 << 0) /* enable memory error irq */
187 #define ICH6_REG_CORBSTS 0x4d
188 #define ICH6_CORBSTS_CMEI (1 << 0) /* memory error indication */
189 #define ICH6_REG_CORBSIZE 0x4e
190
191 #define ICH6_REG_RIRBLBASE 0x50
192 #define ICH6_REG_RIRBUBASE 0x54
193 #define ICH6_REG_RIRBWP 0x58
194 #define ICH6_RIRBWP_RST (1 << 15) /* write pointer reset */
195 #define ICH6_REG_RINTCNT 0x5a
196 #define ICH6_REG_RIRBCTL 0x5c
197 #define ICH6_RBCTL_IRQ_EN (1 << 0) /* enable IRQ */
198 #define ICH6_RBCTL_DMA_EN (1 << 1) /* enable DMA */
199 #define ICH6_RBCTL_OVERRUN_EN (1 << 2) /* enable overrun irq */
200 #define ICH6_REG_RIRBSTS 0x5d
201 #define ICH6_RBSTS_IRQ (1 << 0) /* response irq */
202 #define ICH6_RBSTS_OVERRUN (1 << 2) /* overrun irq */
203 #define ICH6_REG_RIRBSIZE 0x5e
204
205 #define ICH6_REG_IC 0x60
206 #define ICH6_REG_IR 0x64
207 #define ICH6_REG_IRS 0x68
208 #define ICH6_IRS_VALID (1<<1)
209 #define ICH6_IRS_BUSY (1<<0)
210
211 #define ICH6_REG_DPLBASE 0x70
212 #define ICH6_REG_DPUBASE 0x74
213 #define ICH6_DPLBASE_ENABLE 0x1 /* Enable position buffer */
214
215 /* SD offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
216 enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
217
218 /* stream register offsets from stream base */
219 #define ICH6_REG_SD_CTL 0x00
220 #define ICH6_REG_SD_STS 0x03
221 #define ICH6_REG_SD_LPIB 0x04
222 #define ICH6_REG_SD_CBL 0x08
223 #define ICH6_REG_SD_LVI 0x0c
224 #define ICH6_REG_SD_FIFOW 0x0e
225 #define ICH6_REG_SD_FIFOSIZE 0x10
226 #define ICH6_REG_SD_FORMAT 0x12
227 #define ICH6_REG_SD_BDLPL 0x18
228 #define ICH6_REG_SD_BDLPU 0x1c
229
230 /* PCI space */
231 #define ICH6_PCIREG_TCSEL 0x44
232
233 /*
234 * other constants
235 */
236
237 /* max number of SDs */
238 /* ICH, ATI and VIA have 4 playback and 4 capture */
239 #define ICH6_NUM_CAPTURE 4
240 #define ICH6_NUM_PLAYBACK 4
241
242 /* ULI has 6 playback and 5 capture */
243 #define ULI_NUM_CAPTURE 5
244 #define ULI_NUM_PLAYBACK 6
245
246 /* ATI HDMI has 1 playback and 0 capture */
247 #define ATIHDMI_NUM_CAPTURE 0
248 #define ATIHDMI_NUM_PLAYBACK 1
249
250 /* TERA has 4 playback and 3 capture */
251 #define TERA_NUM_CAPTURE 3
252 #define TERA_NUM_PLAYBACK 4
253
254 /* this number is statically defined for simplicity */
255 #define MAX_AZX_DEV 16
256
257 /* max number of fragments - we may use more if allocating more pages for BDL */
258 #define BDL_SIZE 4096
259 #define AZX_MAX_BDL_ENTRIES (BDL_SIZE / 16)
260 #define AZX_MAX_FRAG 32
261 /* max buffer size - no h/w limit, you can increase as you like */
262 #define AZX_MAX_BUF_SIZE (1024*1024*1024)
263
264 /* RIRB int mask: overrun[2], response[0] */
265 #define RIRB_INT_RESPONSE 0x01
266 #define RIRB_INT_OVERRUN 0x04
267 #define RIRB_INT_MASK 0x05
268
269 /* STATESTS int mask: S3,SD2,SD1,SD0 */
270 #define AZX_MAX_CODECS 8
271 #define AZX_DEFAULT_CODECS 4
272 #define STATESTS_INT_MASK ((1 << AZX_MAX_CODECS) - 1)
273
274 /* SD_CTL bits */
275 #define SD_CTL_STREAM_RESET 0x01 /* stream reset bit */
276 #define SD_CTL_DMA_START 0x02 /* stream DMA start bit */
277 #define SD_CTL_STRIPE (3 << 16) /* stripe control */
278 #define SD_CTL_TRAFFIC_PRIO (1 << 18) /* traffic priority */
279 #define SD_CTL_DIR (1 << 19) /* bi-directional stream */
280 #define SD_CTL_STREAM_TAG_MASK (0xf << 20)
281 #define SD_CTL_STREAM_TAG_SHIFT 20
282
283 /* SD_CTL and SD_STS */
284 #define SD_INT_DESC_ERR 0x10 /* descriptor error interrupt */
285 #define SD_INT_FIFO_ERR 0x08 /* FIFO error interrupt */
286 #define SD_INT_COMPLETE 0x04 /* completion interrupt */
287 #define SD_INT_MASK (SD_INT_DESC_ERR|SD_INT_FIFO_ERR|\
288 SD_INT_COMPLETE)
289
290 /* SD_STS */
291 #define SD_STS_FIFO_READY 0x20 /* FIFO ready */
292
293 /* INTCTL and INTSTS */
294 #define ICH6_INT_ALL_STREAM 0xff /* all stream interrupts */
295 #define ICH6_INT_CTRL_EN 0x40000000 /* controller interrupt enable bit */
296 #define ICH6_INT_GLOBAL_EN 0x80000000 /* global interrupt enable bit */
297
298 /* below are so far hardcoded - should read registers in future */
299 #define ICH6_MAX_CORB_ENTRIES 256
300 #define ICH6_MAX_RIRB_ENTRIES 256
301
302 /* position fix mode */
303 enum {
304 POS_FIX_AUTO,
305 POS_FIX_LPIB,
306 POS_FIX_POSBUF,
307 };
308
309 /* Defines for ATI HD Audio support in SB450 south bridge */
310 #define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR 0x42
311 #define ATI_SB450_HDAUDIO_ENABLE_SNOOP 0x02
312
313 /* Defines for Nvidia HDA support */
314 #define NVIDIA_HDA_TRANSREG_ADDR 0x4e
315 #define NVIDIA_HDA_ENABLE_COHBITS 0x0f
316 #define NVIDIA_HDA_ISTRM_COH 0x4d
317 #define NVIDIA_HDA_OSTRM_COH 0x4c
318 #define NVIDIA_HDA_ENABLE_COHBIT 0x01
319
320 /* Defines for Intel SCH HDA snoop control */
321 #define INTEL_SCH_HDA_DEVC 0x78
322 #define INTEL_SCH_HDA_DEVC_NOSNOOP (0x1<<11)
323
324 /* Define IN stream 0 FIFO size offset in VIA controller */
325 #define VIA_IN_STREAM0_FIFO_SIZE_OFFSET 0x90
326 /* Define VIA HD Audio Device ID*/
327 #define VIA_HDAC_DEVICE_ID 0x3288
328
329 /* HD Audio class code */
330 #define PCI_CLASS_MULTIMEDIA_HD_AUDIO 0x0403
331
332 /*
333 */
334
335 struct azx_dev {
336 struct snd_dma_buffer bdl; /* BDL buffer */
337 u32 *posbuf; /* position buffer pointer */
338
339 unsigned int bufsize; /* size of the play buffer in bytes */
340 unsigned int period_bytes; /* size of the period in bytes */
341 unsigned int frags; /* number for period in the play buffer */
342 unsigned int fifo_size; /* FIFO size */
343 unsigned long start_wallclk; /* start + minimum wallclk */
344 unsigned long period_wallclk; /* wallclk for period */
345
346 void __iomem *sd_addr; /* stream descriptor pointer */
347
348 u32 sd_int_sta_mask; /* stream int status mask */
349
350 /* pcm support */
351 struct snd_pcm_substream *substream; /* assigned substream,
352 * set in PCM open
353 */
354 unsigned int format_val; /* format value to be set in the
355 * controller and the codec
356 */
357 unsigned char stream_tag; /* assigned stream */
358 unsigned char index; /* stream index */
359 int device; /* last device number assigned to */
360
361 unsigned int opened :1;
362 unsigned int running :1;
363 unsigned int irq_pending :1;
364 /*
365 * For VIA:
366 * A flag to ensure DMA position is 0
367 * when link position is not greater than FIFO size
368 */
369 unsigned int insufficient :1;
370 };
371
372 /* CORB/RIRB */
373 struct azx_rb {
374 u32 *buf; /* CORB/RIRB buffer
375 * Each CORB entry is 4byte, RIRB is 8byte
376 */
377 dma_addr_t addr; /* physical address of CORB/RIRB buffer */
378 /* for RIRB */
379 unsigned short rp, wp; /* read/write pointers */
380 int cmds[AZX_MAX_CODECS]; /* number of pending requests */
381 u32 res[AZX_MAX_CODECS]; /* last read value */
382 };
383
384 struct azx {
385 struct snd_card *card;
386 struct pci_dev *pci;
387 int dev_index;
388
389 /* chip type specific */
390 int driver_type;
391 int playback_streams;
392 int playback_index_offset;
393 int capture_streams;
394 int capture_index_offset;
395 int num_streams;
396
397 /* pci resources */
398 unsigned long addr;
399 void __iomem *remap_addr;
400 int irq;
401
402 /* locks */
403 spinlock_t reg_lock;
404 struct mutex open_mutex;
405
406 /* streams (x num_streams) */
407 struct azx_dev *azx_dev;
408
409 /* PCM */
410 struct snd_pcm *pcm[HDA_MAX_PCMS];
411
412 /* HD codec */
413 unsigned short codec_mask;
414 int codec_probe_mask; /* copied from probe_mask option */
415 struct hda_bus *bus;
416 unsigned int beep_mode;
417
418 /* CORB/RIRB */
419 struct azx_rb corb;
420 struct azx_rb rirb;
421
422 /* CORB/RIRB and position buffers */
423 struct snd_dma_buffer rb;
424 struct snd_dma_buffer posbuf;
425
426 /* flags */
427 int position_fix[2]; /* for both playback/capture streams */
428 int poll_count;
429 unsigned int running :1;
430 unsigned int initialized :1;
431 unsigned int single_cmd :1;
432 unsigned int polling_mode :1;
433 unsigned int msi :1;
434 unsigned int irq_pending_warned :1;
435 unsigned int via_dmapos_patch :1; /* enable DMA-position fix for VIA */
436 unsigned int probing :1; /* codec probing phase */
437
438 /* for debugging */
439 unsigned int last_cmd[AZX_MAX_CODECS];
440
441 /* for pending irqs */
442 struct work_struct irq_pending_work;
443
444 /* reboot notifier (for mysterious hangup problem at power-down) */
445 struct notifier_block reboot_notifier;
446 };
447
448 /* driver types */
449 enum {
450 AZX_DRIVER_ICH,
451 AZX_DRIVER_PCH,
452 AZX_DRIVER_SCH,
453 AZX_DRIVER_ATI,
454 AZX_DRIVER_ATIHDMI,
455 AZX_DRIVER_VIA,
456 AZX_DRIVER_SIS,
457 AZX_DRIVER_ULI,
458 AZX_DRIVER_NVIDIA,
459 AZX_DRIVER_TERA,
460 AZX_DRIVER_GENERIC,
461 AZX_NUM_DRIVERS, /* keep this as last entry */
462 };
463
464 static char *driver_short_names[] __devinitdata = {
465 [AZX_DRIVER_ICH] = "HDA Intel",
466 [AZX_DRIVER_PCH] = "HDA Intel PCH",
467 [AZX_DRIVER_SCH] = "HDA Intel MID",
468 [AZX_DRIVER_ATI] = "HDA ATI SB",
469 [AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
470 [AZX_DRIVER_VIA] = "HDA VIA VT82xx",
471 [AZX_DRIVER_SIS] = "HDA SIS966",
472 [AZX_DRIVER_ULI] = "HDA ULI M5461",
473 [AZX_DRIVER_NVIDIA] = "HDA NVidia",
474 [AZX_DRIVER_TERA] = "HDA Teradici",
475 [AZX_DRIVER_GENERIC] = "HD-Audio Generic",
476 };
477
478 /*
479 * macros for easy use
480 */
481 #define azx_writel(chip,reg,value) \
482 writel(value, (chip)->remap_addr + ICH6_REG_##reg)
483 #define azx_readl(chip,reg) \
484 readl((chip)->remap_addr + ICH6_REG_##reg)
485 #define azx_writew(chip,reg,value) \
486 writew(value, (chip)->remap_addr + ICH6_REG_##reg)
487 #define azx_readw(chip,reg) \
488 readw((chip)->remap_addr + ICH6_REG_##reg)
489 #define azx_writeb(chip,reg,value) \
490 writeb(value, (chip)->remap_addr + ICH6_REG_##reg)
491 #define azx_readb(chip,reg) \
492 readb((chip)->remap_addr + ICH6_REG_##reg)
493
494 #define azx_sd_writel(dev,reg,value) \
495 writel(value, (dev)->sd_addr + ICH6_REG_##reg)
496 #define azx_sd_readl(dev,reg) \
497 readl((dev)->sd_addr + ICH6_REG_##reg)
498 #define azx_sd_writew(dev,reg,value) \
499 writew(value, (dev)->sd_addr + ICH6_REG_##reg)
500 #define azx_sd_readw(dev,reg) \
501 readw((dev)->sd_addr + ICH6_REG_##reg)
502 #define azx_sd_writeb(dev,reg,value) \
503 writeb(value, (dev)->sd_addr + ICH6_REG_##reg)
504 #define azx_sd_readb(dev,reg) \
505 readb((dev)->sd_addr + ICH6_REG_##reg)
506
507 /* for pcm support */
508 #define get_azx_dev(substream) (substream->runtime->private_data)
509
510 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
511 static int azx_send_cmd(struct hda_bus *bus, unsigned int val);
512 /*
513 * Interface for HD codec
514 */
515
516 /*
517 * CORB / RIRB interface
518 */
519 static int azx_alloc_cmd_io(struct azx *chip)
520 {
521 int err;
522
523 /* single page (at least 4096 bytes) must suffice for both ringbuffes */
524 err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
525 snd_dma_pci_data(chip->pci),
526 PAGE_SIZE, &chip->rb);
527 if (err < 0) {
528 snd_printk(KERN_ERR SFX "cannot allocate CORB/RIRB\n");
529 return err;
530 }
531 return 0;
532 }
533
534 static void azx_init_cmd_io(struct azx *chip)
535 {
536 spin_lock_irq(&chip->reg_lock);
537 /* CORB set up */
538 chip->corb.addr = chip->rb.addr;
539 chip->corb.buf = (u32 *)chip->rb.area;
540 azx_writel(chip, CORBLBASE, (u32)chip->corb.addr);
541 azx_writel(chip, CORBUBASE, upper_32_bits(chip->corb.addr));
542
543 /* set the corb size to 256 entries (ULI requires explicitly) */
544 azx_writeb(chip, CORBSIZE, 0x02);
545 /* set the corb write pointer to 0 */
546 azx_writew(chip, CORBWP, 0);
547 /* reset the corb hw read pointer */
548 azx_writew(chip, CORBRP, ICH6_CORBRP_RST);
549 /* enable corb dma */
550 azx_writeb(chip, CORBCTL, ICH6_CORBCTL_RUN);
551
552 /* RIRB set up */
553 chip->rirb.addr = chip->rb.addr + 2048;
554 chip->rirb.buf = (u32 *)(chip->rb.area + 2048);
555 chip->rirb.wp = chip->rirb.rp = 0;
556 memset(chip->rirb.cmds, 0, sizeof(chip->rirb.cmds));
557 azx_writel(chip, RIRBLBASE, (u32)chip->rirb.addr);
558 azx_writel(chip, RIRBUBASE, upper_32_bits(chip->rirb.addr));
559
560 /* set the rirb size to 256 entries (ULI requires explicitly) */
561 azx_writeb(chip, RIRBSIZE, 0x02);
562 /* reset the rirb hw write pointer */
563 azx_writew(chip, RIRBWP, ICH6_RIRBWP_RST);
564 /* set N=1, get RIRB response interrupt for new entry */
565 azx_writew(chip, RINTCNT, 1);
566 /* enable rirb dma and response irq */
567 azx_writeb(chip, RIRBCTL, ICH6_RBCTL_DMA_EN | ICH6_RBCTL_IRQ_EN);
568 spin_unlock_irq(&chip->reg_lock);
569 }
570
571 static void azx_free_cmd_io(struct azx *chip)
572 {
573 spin_lock_irq(&chip->reg_lock);
574 /* disable ringbuffer DMAs */
575 azx_writeb(chip, RIRBCTL, 0);
576 azx_writeb(chip, CORBCTL, 0);
577 spin_unlock_irq(&chip->reg_lock);
578 }
579
580 static unsigned int azx_command_addr(u32 cmd)
581 {
582 unsigned int addr = cmd >> 28;
583
584 if (addr >= AZX_MAX_CODECS) {
585 snd_BUG();
586 addr = 0;
587 }
588
589 return addr;
590 }
591
592 static unsigned int azx_response_addr(u32 res)
593 {
594 unsigned int addr = res & 0xf;
595
596 if (addr >= AZX_MAX_CODECS) {
597 snd_BUG();
598 addr = 0;
599 }
600
601 return addr;
602 }
603
604 /* send a command */
605 static int azx_corb_send_cmd(struct hda_bus *bus, u32 val)
606 {
607 struct azx *chip = bus->private_data;
608 unsigned int addr = azx_command_addr(val);
609 unsigned int wp;
610
611 spin_lock_irq(&chip->reg_lock);
612
613 /* add command to corb */
614 wp = azx_readb(chip, CORBWP);
615 wp++;
616 wp %= ICH6_MAX_CORB_ENTRIES;
617
618 chip->rirb.cmds[addr]++;
619 chip->corb.buf[wp] = cpu_to_le32(val);
620 azx_writel(chip, CORBWP, wp);
621
622 spin_unlock_irq(&chip->reg_lock);
623
624 return 0;
625 }
626
627 #define ICH6_RIRB_EX_UNSOL_EV (1<<4)
628
629 /* retrieve RIRB entry - called from interrupt handler */
630 static void azx_update_rirb(struct azx *chip)
631 {
632 unsigned int rp, wp;
633 unsigned int addr;
634 u32 res, res_ex;
635
636 wp = azx_readb(chip, RIRBWP);
637 if (wp == chip->rirb.wp)
638 return;
639 chip->rirb.wp = wp;
640
641 while (chip->rirb.rp != wp) {
642 chip->rirb.rp++;
643 chip->rirb.rp %= ICH6_MAX_RIRB_ENTRIES;
644
645 rp = chip->rirb.rp << 1; /* an RIRB entry is 8-bytes */
646 res_ex = le32_to_cpu(chip->rirb.buf[rp + 1]);
647 res = le32_to_cpu(chip->rirb.buf[rp]);
648 addr = azx_response_addr(res_ex);
649 if (res_ex & ICH6_RIRB_EX_UNSOL_EV)
650 snd_hda_queue_unsol_event(chip->bus, res, res_ex);
651 else if (chip->rirb.cmds[addr]) {
652 chip->rirb.res[addr] = res;
653 smp_wmb();
654 chip->rirb.cmds[addr]--;
655 } else
656 snd_printk(KERN_ERR SFX "spurious response %#x:%#x, "
657 "last cmd=%#08x\n",
658 res, res_ex,
659 chip->last_cmd[addr]);
660 }
661 }
662
663 /* receive a response */
664 static unsigned int azx_rirb_get_response(struct hda_bus *bus,
665 unsigned int addr)
666 {
667 struct azx *chip = bus->private_data;
668 unsigned long timeout;
669 int do_poll = 0;
670
671 again:
672 timeout = jiffies + msecs_to_jiffies(1000);
673 for (;;) {
674 if (chip->polling_mode || do_poll) {
675 spin_lock_irq(&chip->reg_lock);
676 azx_update_rirb(chip);
677 spin_unlock_irq(&chip->reg_lock);
678 }
679 if (!chip->rirb.cmds[addr]) {
680 smp_rmb();
681 bus->rirb_error = 0;
682
683 if (!do_poll)
684 chip->poll_count = 0;
685 return chip->rirb.res[addr]; /* the last value */
686 }
687 if (time_after(jiffies, timeout))
688 break;
689 if (bus->needs_damn_long_delay)
690 msleep(2); /* temporary workaround */
691 else {
692 udelay(10);
693 cond_resched();
694 }
695 }
696
697 if (!chip->polling_mode && chip->poll_count < 2) {
698 snd_printdd(SFX "azx_get_response timeout, "
699 "polling the codec once: last cmd=0x%08x\n",
700 chip->last_cmd[addr]);
701 do_poll = 1;
702 chip->poll_count++;
703 goto again;
704 }
705
706
707 if (!chip->polling_mode) {
708 snd_printk(KERN_WARNING SFX "azx_get_response timeout, "
709 "switching to polling mode: last cmd=0x%08x\n",
710 chip->last_cmd[addr]);
711 chip->polling_mode = 1;
712 goto again;
713 }
714
715 if (chip->msi) {
716 snd_printk(KERN_WARNING SFX "No response from codec, "
717 "disabling MSI: last cmd=0x%08x\n",
718 chip->last_cmd[addr]);
719 free_irq(chip->irq, chip);
720 chip->irq = -1;
721 pci_disable_msi(chip->pci);
722 chip->msi = 0;
723 if (azx_acquire_irq(chip, 1) < 0) {
724 bus->rirb_error = 1;
725 return -1;
726 }
727 goto again;
728 }
729
730 if (chip->probing) {
731 /* If this critical timeout happens during the codec probing
732 * phase, this is likely an access to a non-existing codec
733 * slot. Better to return an error and reset the system.
734 */
735 return -1;
736 }
737
738 /* a fatal communication error; need either to reset or to fallback
739 * to the single_cmd mode
740 */
741 bus->rirb_error = 1;
742 if (bus->allow_bus_reset && !bus->response_reset && !bus->in_reset) {
743 bus->response_reset = 1;
744 return -1; /* give a chance to retry */
745 }
746
747 snd_printk(KERN_ERR "hda_intel: azx_get_response timeout, "
748 "switching to single_cmd mode: last cmd=0x%08x\n",
749 chip->last_cmd[addr]);
750 chip->single_cmd = 1;
751 bus->response_reset = 0;
752 /* release CORB/RIRB */
753 azx_free_cmd_io(chip);
754 /* disable unsolicited responses */
755 azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~ICH6_GCTL_UNSOL);
756 return -1;
757 }
758
759 /*
760 * Use the single immediate command instead of CORB/RIRB for simplicity
761 *
762 * Note: according to Intel, this is not preferred use. The command was
763 * intended for the BIOS only, and may get confused with unsolicited
764 * responses. So, we shouldn't use it for normal operation from the
765 * driver.
766 * I left the codes, however, for debugging/testing purposes.
767 */
768
769 /* receive a response */
770 static int azx_single_wait_for_response(struct azx *chip, unsigned int addr)
771 {
772 int timeout = 50;
773
774 while (timeout--) {
775 /* check IRV busy bit */
776 if (azx_readw(chip, IRS) & ICH6_IRS_VALID) {
777 /* reuse rirb.res as the response return value */
778 chip->rirb.res[addr] = azx_readl(chip, IR);
779 return 0;
780 }
781 udelay(1);
782 }
783 if (printk_ratelimit())
784 snd_printd(SFX "get_response timeout: IRS=0x%x\n",
785 azx_readw(chip, IRS));
786 chip->rirb.res[addr] = -1;
787 return -EIO;
788 }
789
790 /* send a command */
791 static int azx_single_send_cmd(struct hda_bus *bus, u32 val)
792 {
793 struct azx *chip = bus->private_data;
794 unsigned int addr = azx_command_addr(val);
795 int timeout = 50;
796
797 bus->rirb_error = 0;
798 while (timeout--) {
799 /* check ICB busy bit */
800 if (!((azx_readw(chip, IRS) & ICH6_IRS_BUSY))) {
801 /* Clear IRV valid bit */
802 azx_writew(chip, IRS, azx_readw(chip, IRS) |
803 ICH6_IRS_VALID);
804 azx_writel(chip, IC, val);
805 azx_writew(chip, IRS, azx_readw(chip, IRS) |
806 ICH6_IRS_BUSY);
807 return azx_single_wait_for_response(chip, addr);
808 }
809 udelay(1);
810 }
811 if (printk_ratelimit())
812 snd_printd(SFX "send_cmd timeout: IRS=0x%x, val=0x%x\n",
813 azx_readw(chip, IRS), val);
814 return -EIO;
815 }
816
817 /* receive a response */
818 static unsigned int azx_single_get_response(struct hda_bus *bus,
819 unsigned int addr)
820 {
821 struct azx *chip = bus->private_data;
822 return chip->rirb.res[addr];
823 }
824
825 /*
826 * The below are the main callbacks from hda_codec.
827 *
828 * They are just the skeleton to call sub-callbacks according to the
829 * current setting of chip->single_cmd.
830 */
831
832 /* send a command */
833 static int azx_send_cmd(struct hda_bus *bus, unsigned int val)
834 {
835 struct azx *chip = bus->private_data;
836
837 chip->last_cmd[azx_command_addr(val)] = val;
838 if (chip->single_cmd)
839 return azx_single_send_cmd(bus, val);
840 else
841 return azx_corb_send_cmd(bus, val);
842 }
843
844 /* get a response */
845 static unsigned int azx_get_response(struct hda_bus *bus,
846 unsigned int addr)
847 {
848 struct azx *chip = bus->private_data;
849 if (chip->single_cmd)
850 return azx_single_get_response(bus, addr);
851 else
852 return azx_rirb_get_response(bus, addr);
853 }
854
855 #ifdef CONFIG_SND_HDA_POWER_SAVE
856 static void azx_power_notify(struct hda_bus *bus);
857 #endif
858
859 /* reset codec link */
860 static int azx_reset(struct azx *chip, int full_reset)
861 {
862 int count;
863
864 if (!full_reset)
865 goto __skip;
866
867 /* clear STATESTS */
868 azx_writeb(chip, STATESTS, STATESTS_INT_MASK);
869
870 /* reset controller */
871 azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~ICH6_GCTL_RESET);
872
873 count = 50;
874 while (azx_readb(chip, GCTL) && --count)
875 msleep(1);
876
877 /* delay for >= 100us for codec PLL to settle per spec
878 * Rev 0.9 section 5.5.1
879 */
880 msleep(1);
881
882 /* Bring controller out of reset */
883 azx_writeb(chip, GCTL, azx_readb(chip, GCTL) | ICH6_GCTL_RESET);
884
885 count = 50;
886 while (!azx_readb(chip, GCTL) && --count)
887 msleep(1);
888
889 /* Brent Chartrand said to wait >= 540us for codecs to initialize */
890 msleep(1);
891
892 __skip:
893 /* check to see if controller is ready */
894 if (!azx_readb(chip, GCTL)) {
895 snd_printd(SFX "azx_reset: controller not ready!\n");
896 return -EBUSY;
897 }
898
899 /* Accept unsolicited responses */
900 if (!chip->single_cmd)
901 azx_writel(chip, GCTL, azx_readl(chip, GCTL) |
902 ICH6_GCTL_UNSOL);
903
904 /* detect codecs */
905 if (!chip->codec_mask) {
906 chip->codec_mask = azx_readw(chip, STATESTS);
907 snd_printdd(SFX "codec_mask = 0x%x\n", chip->codec_mask);
908 }
909
910 return 0;
911 }
912
913
914 /*
915 * Lowlevel interface
916 */
917
918 /* enable interrupts */
919 static void azx_int_enable(struct azx *chip)
920 {
921 /* enable controller CIE and GIE */
922 azx_writel(chip, INTCTL, azx_readl(chip, INTCTL) |
923 ICH6_INT_CTRL_EN | ICH6_INT_GLOBAL_EN);
924 }
925
926 /* disable interrupts */
927 static void azx_int_disable(struct azx *chip)
928 {
929 int i;
930
931 /* disable interrupts in stream descriptor */
932 for (i = 0; i < chip->num_streams; i++) {
933 struct azx_dev *azx_dev = &chip->azx_dev[i];
934 azx_sd_writeb(azx_dev, SD_CTL,
935 azx_sd_readb(azx_dev, SD_CTL) & ~SD_INT_MASK);
936 }
937
938 /* disable SIE for all streams */
939 azx_writeb(chip, INTCTL, 0);
940
941 /* disable controller CIE and GIE */
942 azx_writel(chip, INTCTL, azx_readl(chip, INTCTL) &
943 ~(ICH6_INT_CTRL_EN | ICH6_INT_GLOBAL_EN));
944 }
945
946 /* clear interrupts */
947 static void azx_int_clear(struct azx *chip)
948 {
949 int i;
950
951 /* clear stream status */
952 for (i = 0; i < chip->num_streams; i++) {
953 struct azx_dev *azx_dev = &chip->azx_dev[i];
954 azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK);
955 }
956
957 /* clear STATESTS */
958 azx_writeb(chip, STATESTS, STATESTS_INT_MASK);
959
960 /* clear rirb status */
961 azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
962
963 /* clear int status */
964 azx_writel(chip, INTSTS, ICH6_INT_CTRL_EN | ICH6_INT_ALL_STREAM);
965 }
966
967 /* start a stream */
968 static void azx_stream_start(struct azx *chip, struct azx_dev *azx_dev)
969 {
970 /*
971 * Before stream start, initialize parameter
972 */
973 azx_dev->insufficient = 1;
974
975 /* enable SIE */
976 azx_writel(chip, INTCTL,
977 azx_readl(chip, INTCTL) | (1 << azx_dev->index));
978 /* set DMA start and interrupt mask */
979 azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) |
980 SD_CTL_DMA_START | SD_INT_MASK);
981 }
982
983 /* stop DMA */
984 static void azx_stream_clear(struct azx *chip, struct azx_dev *azx_dev)
985 {
986 azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) &
987 ~(SD_CTL_DMA_START | SD_INT_MASK));
988 azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK); /* to be sure */
989 }
990
991 /* stop a stream */
992 static void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev)
993 {
994 azx_stream_clear(chip, azx_dev);
995 /* disable SIE */
996 azx_writel(chip, INTCTL,
997 azx_readl(chip, INTCTL) & ~(1 << azx_dev->index));
998 }
999
1000
1001 /*
1002 * reset and start the controller registers
1003 */
1004 static void azx_init_chip(struct azx *chip, int full_reset)
1005 {
1006 if (chip->initialized)
1007 return;
1008
1009 /* reset controller */
1010 azx_reset(chip, full_reset);
1011
1012 /* initialize interrupts */
1013 azx_int_clear(chip);
1014 azx_int_enable(chip);
1015
1016 /* initialize the codec command I/O */
1017 if (!chip->single_cmd)
1018 azx_init_cmd_io(chip);
1019
1020 /* program the position buffer */
1021 azx_writel(chip, DPLBASE, (u32)chip->posbuf.addr);
1022 azx_writel(chip, DPUBASE, upper_32_bits(chip->posbuf.addr));
1023
1024 chip->initialized = 1;
1025 }
1026
1027 /*
1028 * initialize the PCI registers
1029 */
1030 /* update bits in a PCI register byte */
1031 static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
1032 unsigned char mask, unsigned char val)
1033 {
1034 unsigned char data;
1035
1036 pci_read_config_byte(pci, reg, &data);
1037 data &= ~mask;
1038 data |= (val & mask);
1039 pci_write_config_byte(pci, reg, data);
1040 }
1041
1042 static void azx_init_pci(struct azx *chip)
1043 {
1044 unsigned short snoop;
1045
1046 /* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
1047 * TCSEL == Traffic Class Select Register, which sets PCI express QOS
1048 * Ensuring these bits are 0 clears playback static on some HD Audio
1049 * codecs
1050 */
1051 update_pci_byte(chip->pci, ICH6_PCIREG_TCSEL, 0x07, 0);
1052
1053 switch (chip->driver_type) {
1054 case AZX_DRIVER_ATI:
1055 /* For ATI SB450 azalia HD audio, we need to enable snoop */
1056 update_pci_byte(chip->pci,
1057 ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR,
1058 0x07, ATI_SB450_HDAUDIO_ENABLE_SNOOP);
1059 break;
1060 case AZX_DRIVER_NVIDIA:
1061 /* For NVIDIA HDA, enable snoop */
1062 update_pci_byte(chip->pci,
1063 NVIDIA_HDA_TRANSREG_ADDR,
1064 0x0f, NVIDIA_HDA_ENABLE_COHBITS);
1065 update_pci_byte(chip->pci,
1066 NVIDIA_HDA_ISTRM_COH,
1067 0x01, NVIDIA_HDA_ENABLE_COHBIT);
1068 update_pci_byte(chip->pci,
1069 NVIDIA_HDA_OSTRM_COH,
1070 0x01, NVIDIA_HDA_ENABLE_COHBIT);
1071 break;
1072 case AZX_DRIVER_SCH:
1073 case AZX_DRIVER_PCH:
1074 pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
1075 if (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) {
1076 pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC,
1077 snoop & (~INTEL_SCH_HDA_DEVC_NOSNOOP));
1078 pci_read_config_word(chip->pci,
1079 INTEL_SCH_HDA_DEVC, &snoop);
1080 snd_printdd(SFX "HDA snoop disabled, enabling ... %s\n",
1081 (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)
1082 ? "Failed" : "OK");
1083 }
1084 break;
1085
1086 }
1087 }
1088
1089
1090 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
1091
1092 /*
1093 * interrupt handler
1094 */
1095 static irqreturn_t azx_interrupt(int irq, void *dev_id)
1096 {
1097 struct azx *chip = dev_id;
1098 struct azx_dev *azx_dev;
1099 u32 status;
1100 int i, ok;
1101
1102 spin_lock(&chip->reg_lock);
1103
1104 status = azx_readl(chip, INTSTS);
1105 if (status == 0) {
1106 spin_unlock(&chip->reg_lock);
1107 return IRQ_NONE;
1108 }
1109
1110 for (i = 0; i < chip->num_streams; i++) {
1111 azx_dev = &chip->azx_dev[i];
1112 if (status & azx_dev->sd_int_sta_mask) {
1113 azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK);
1114 if (!azx_dev->substream || !azx_dev->running)
1115 continue;
1116 /* check whether this IRQ is really acceptable */
1117 ok = azx_position_ok(chip, azx_dev);
1118 if (ok == 1) {
1119 azx_dev->irq_pending = 0;
1120 spin_unlock(&chip->reg_lock);
1121 snd_pcm_period_elapsed(azx_dev->substream);
1122 spin_lock(&chip->reg_lock);
1123 } else if (ok == 0 && chip->bus && chip->bus->workq) {
1124 /* bogus IRQ, process it later */
1125 azx_dev->irq_pending = 1;
1126 queue_work(chip->bus->workq,
1127 &chip->irq_pending_work);
1128 }
1129 }
1130 }
1131
1132 /* clear rirb int */
1133 status = azx_readb(chip, RIRBSTS);
1134 if (status & RIRB_INT_MASK) {
1135 if (status & RIRB_INT_RESPONSE)
1136 azx_update_rirb(chip);
1137 azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
1138 }
1139
1140 #if 0
1141 /* clear state status int */
1142 if (azx_readb(chip, STATESTS) & 0x04)
1143 azx_writeb(chip, STATESTS, 0x04);
1144 #endif
1145 spin_unlock(&chip->reg_lock);
1146
1147 return IRQ_HANDLED;
1148 }
1149
1150
1151 /*
1152 * set up a BDL entry
1153 */
1154 static int setup_bdle(struct snd_pcm_substream *substream,
1155 struct azx_dev *azx_dev, u32 **bdlp,
1156 int ofs, int size, int with_ioc)
1157 {
1158 u32 *bdl = *bdlp;
1159
1160 while (size > 0) {
1161 dma_addr_t addr;
1162 int chunk;
1163
1164 if (azx_dev->frags >= AZX_MAX_BDL_ENTRIES)
1165 return -EINVAL;
1166
1167 addr = snd_pcm_sgbuf_get_addr(substream, ofs);
1168 /* program the address field of the BDL entry */
1169 bdl[0] = cpu_to_le32((u32)addr);
1170 bdl[1] = cpu_to_le32(upper_32_bits(addr));
1171 /* program the size field of the BDL entry */
1172 chunk = snd_pcm_sgbuf_get_chunk_size(substream, ofs, size);
1173 bdl[2] = cpu_to_le32(chunk);
1174 /* program the IOC to enable interrupt
1175 * only when the whole fragment is processed
1176 */
1177 size -= chunk;
1178 bdl[3] = (size || !with_ioc) ? 0 : cpu_to_le32(0x01);
1179 bdl += 4;
1180 azx_dev->frags++;
1181 ofs += chunk;
1182 }
1183 *bdlp = bdl;
1184 return ofs;
1185 }
1186
1187 /*
1188 * set up BDL entries
1189 */
1190 static int azx_setup_periods(struct azx *chip,
1191 struct snd_pcm_substream *substream,
1192 struct azx_dev *azx_dev)
1193 {
1194 u32 *bdl;
1195 int i, ofs, periods, period_bytes;
1196 int pos_adj;
1197
1198 /* reset BDL address */
1199 azx_sd_writel(azx_dev, SD_BDLPL, 0);
1200 azx_sd_writel(azx_dev, SD_BDLPU, 0);
1201
1202 period_bytes = azx_dev->period_bytes;
1203 periods = azx_dev->bufsize / period_bytes;
1204
1205 /* program the initial BDL entries */
1206 bdl = (u32 *)azx_dev->bdl.area;
1207 ofs = 0;
1208 azx_dev->frags = 0;
1209 pos_adj = bdl_pos_adj[chip->dev_index];
1210 if (pos_adj > 0) {
1211 struct snd_pcm_runtime *runtime = substream->runtime;
1212 int pos_align = pos_adj;
1213 pos_adj = (pos_adj * runtime->rate + 47999) / 48000;
1214 if (!pos_adj)
1215 pos_adj = pos_align;
1216 else
1217 pos_adj = ((pos_adj + pos_align - 1) / pos_align) *
1218 pos_align;
1219 pos_adj = frames_to_bytes(runtime, pos_adj);
1220 if (pos_adj >= period_bytes) {
1221 snd_printk(KERN_WARNING SFX "Too big adjustment %d\n",
1222 bdl_pos_adj[chip->dev_index]);
1223 pos_adj = 0;
1224 } else {
1225 ofs = setup_bdle(substream, azx_dev,
1226 &bdl, ofs, pos_adj, 1);
1227 if (ofs < 0)
1228 goto error;
1229 }
1230 } else
1231 pos_adj = 0;
1232 for (i = 0; i < periods; i++) {
1233 if (i == periods - 1 && pos_adj)
1234 ofs = setup_bdle(substream, azx_dev, &bdl, ofs,
1235 period_bytes - pos_adj, 0);
1236 else
1237 ofs = setup_bdle(substream, azx_dev, &bdl, ofs,
1238 period_bytes, 1);
1239 if (ofs < 0)
1240 goto error;
1241 }
1242 return 0;
1243
1244 error:
1245 snd_printk(KERN_ERR SFX "Too many BDL entries: buffer=%d, period=%d\n",
1246 azx_dev->bufsize, period_bytes);
1247 return -EINVAL;
1248 }
1249
1250 /* reset stream */
1251 static void azx_stream_reset(struct azx *chip, struct azx_dev *azx_dev)
1252 {
1253 unsigned char val;
1254 int timeout;
1255
1256 azx_stream_clear(chip, azx_dev);
1257
1258 azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) |
1259 SD_CTL_STREAM_RESET);
1260 udelay(3);
1261 timeout = 300;
1262 while (!((val = azx_sd_readb(azx_dev, SD_CTL)) & SD_CTL_STREAM_RESET) &&
1263 --timeout)
1264 ;
1265 val &= ~SD_CTL_STREAM_RESET;
1266 azx_sd_writeb(azx_dev, SD_CTL, val);
1267 udelay(3);
1268
1269 timeout = 300;
1270 /* waiting for hardware to report that the stream is out of reset */
1271 while (((val = azx_sd_readb(azx_dev, SD_CTL)) & SD_CTL_STREAM_RESET) &&
1272 --timeout)
1273 ;
1274
1275 /* reset first position - may not be synced with hw at this time */
1276 *azx_dev->posbuf = 0;
1277 }
1278
1279 /*
1280 * set up the SD for streaming
1281 */
1282 static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev)
1283 {
1284 /* make sure the run bit is zero for SD */
1285 azx_stream_clear(chip, azx_dev);
1286 /* program the stream_tag */
1287 azx_sd_writel(azx_dev, SD_CTL,
1288 (azx_sd_readl(azx_dev, SD_CTL) & ~SD_CTL_STREAM_TAG_MASK)|
1289 (azx_dev->stream_tag << SD_CTL_STREAM_TAG_SHIFT));
1290
1291 /* program the length of samples in cyclic buffer */
1292 azx_sd_writel(azx_dev, SD_CBL, azx_dev->bufsize);
1293
1294 /* program the stream format */
1295 /* this value needs to be the same as the one programmed */
1296 azx_sd_writew(azx_dev, SD_FORMAT, azx_dev->format_val);
1297
1298 /* program the stream LVI (last valid index) of the BDL */
1299 azx_sd_writew(azx_dev, SD_LVI, azx_dev->frags - 1);
1300
1301 /* program the BDL address */
1302 /* lower BDL address */
1303 azx_sd_writel(azx_dev, SD_BDLPL, (u32)azx_dev->bdl.addr);
1304 /* upper BDL address */
1305 azx_sd_writel(azx_dev, SD_BDLPU, upper_32_bits(azx_dev->bdl.addr));
1306
1307 /* enable the position buffer */
1308 if (chip->position_fix[0] == POS_FIX_POSBUF ||
1309 chip->position_fix[0] == POS_FIX_AUTO ||
1310 chip->position_fix[1] == POS_FIX_POSBUF ||
1311 chip->position_fix[1] == POS_FIX_AUTO ||
1312 chip->via_dmapos_patch) {
1313 if (!(azx_readl(chip, DPLBASE) & ICH6_DPLBASE_ENABLE))
1314 azx_writel(chip, DPLBASE,
1315 (u32)chip->posbuf.addr | ICH6_DPLBASE_ENABLE);
1316 }
1317
1318 /* set the interrupt enable bits in the descriptor control register */
1319 azx_sd_writel(azx_dev, SD_CTL,
1320 azx_sd_readl(azx_dev, SD_CTL) | SD_INT_MASK);
1321
1322 return 0;
1323 }
1324
1325 /*
1326 * Probe the given codec address
1327 */
1328 static int probe_codec(struct azx *chip, int addr)
1329 {
1330 unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) |
1331 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
1332 unsigned int res;
1333
1334 mutex_lock(&chip->bus->cmd_mutex);
1335 chip->probing = 1;
1336 azx_send_cmd(chip->bus, cmd);
1337 res = azx_get_response(chip->bus, addr);
1338 chip->probing = 0;
1339 mutex_unlock(&chip->bus->cmd_mutex);
1340 if (res == -1)
1341 return -EIO;
1342 snd_printdd(SFX "codec #%d probed OK\n", addr);
1343 return 0;
1344 }
1345
1346 static int azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec,
1347 struct hda_pcm *cpcm);
1348 static void azx_stop_chip(struct azx *chip);
1349
1350 static void azx_bus_reset(struct hda_bus *bus)
1351 {
1352 struct azx *chip = bus->private_data;
1353
1354 bus->in_reset = 1;
1355 azx_stop_chip(chip);
1356 azx_init_chip(chip, 1);
1357 #ifdef CONFIG_PM
1358 if (chip->initialized) {
1359 int i;
1360
1361 for (i = 0; i < HDA_MAX_PCMS; i++)
1362 snd_pcm_suspend_all(chip->pcm[i]);
1363 snd_hda_suspend(chip->bus);
1364 snd_hda_resume(chip->bus);
1365 }
1366 #endif
1367 bus->in_reset = 0;
1368 }
1369
1370 /*
1371 * Codec initialization
1372 */
1373
1374 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
1375 static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] __devinitdata = {
1376 [AZX_DRIVER_NVIDIA] = 8,
1377 [AZX_DRIVER_TERA] = 1,
1378 };
1379
1380 static int __devinit azx_codec_create(struct azx *chip, const char *model)
1381 {
1382 struct hda_bus_template bus_temp;
1383 int c, codecs, err;
1384 int max_slots;
1385
1386 memset(&bus_temp, 0, sizeof(bus_temp));
1387 bus_temp.private_data = chip;
1388 bus_temp.modelname = model;
1389 bus_temp.pci = chip->pci;
1390 bus_temp.ops.command = azx_send_cmd;
1391 bus_temp.ops.get_response = azx_get_response;
1392 bus_temp.ops.attach_pcm = azx_attach_pcm_stream;
1393 bus_temp.ops.bus_reset = azx_bus_reset;
1394 #ifdef CONFIG_SND_HDA_POWER_SAVE
1395 bus_temp.power_save = &power_save;
1396 bus_temp.ops.pm_notify = azx_power_notify;
1397 #endif
1398
1399 err = snd_hda_bus_new(chip->card, &bus_temp, &chip->bus);
1400 if (err < 0)
1401 return err;
1402
1403 if (chip->driver_type == AZX_DRIVER_NVIDIA)
1404 chip->bus->needs_damn_long_delay = 1;
1405
1406 codecs = 0;
1407 max_slots = azx_max_codecs[chip->driver_type];
1408 if (!max_slots)
1409 max_slots = AZX_DEFAULT_CODECS;
1410
1411 /* First try to probe all given codec slots */
1412 for (c = 0; c < max_slots; c++) {
1413 if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
1414 if (probe_codec(chip, c) < 0) {
1415 /* Some BIOSen give you wrong codec addresses
1416 * that don't exist
1417 */
1418 snd_printk(KERN_WARNING SFX
1419 "Codec #%d probe error; "
1420 "disabling it...\n", c);
1421 chip->codec_mask &= ~(1 << c);
1422 /* More badly, accessing to a non-existing
1423 * codec often screws up the controller chip,
1424 * and disturbs the further communications.
1425 * Thus if an error occurs during probing,
1426 * better to reset the controller chip to
1427 * get back to the sanity state.
1428 */
1429 azx_stop_chip(chip);
1430 azx_init_chip(chip, 1);
1431 }
1432 }
1433 }
1434
1435 /* Then create codec instances */
1436 for (c = 0; c < max_slots; c++) {
1437 if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
1438 struct hda_codec *codec;
1439 err = snd_hda_codec_new(chip->bus, c, &codec);
1440 if (err < 0)
1441 continue;
1442 codec->beep_mode = chip->beep_mode;
1443 codecs++;
1444 }
1445 }
1446 if (!codecs) {
1447 snd_printk(KERN_ERR SFX "no codecs initialized\n");
1448 return -ENXIO;
1449 }
1450 return 0;
1451 }
1452
1453 /* configure each codec instance */
1454 static int __devinit azx_codec_configure(struct azx *chip)
1455 {
1456 struct hda_codec *codec;
1457 list_for_each_entry(codec, &chip->bus->codec_list, list) {
1458 snd_hda_codec_configure(codec);
1459 }
1460 return 0;
1461 }
1462
1463
1464 /*
1465 * PCM support
1466 */
1467
1468 /* assign a stream for the PCM */
1469 static inline struct azx_dev *
1470 azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream)
1471 {
1472 int dev, i, nums;
1473 struct azx_dev *res = NULL;
1474
1475 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
1476 dev = chip->playback_index_offset;
1477 nums = chip->playback_streams;
1478 } else {
1479 dev = chip->capture_index_offset;
1480 nums = chip->capture_streams;
1481 }
1482 for (i = 0; i < nums; i++, dev++)
1483 if (!chip->azx_dev[dev].opened) {
1484 res = &chip->azx_dev[dev];
1485 if (res->device == substream->pcm->device)
1486 break;
1487 }
1488 if (res) {
1489 res->opened = 1;
1490 res->device = substream->pcm->device;
1491 }
1492 return res;
1493 }
1494
1495 /* release the assigned stream */
1496 static inline void azx_release_device(struct azx_dev *azx_dev)
1497 {
1498 azx_dev->opened = 0;
1499 }
1500
1501 static struct snd_pcm_hardware azx_pcm_hw = {
1502 .info = (SNDRV_PCM_INFO_MMAP |
1503 SNDRV_PCM_INFO_INTERLEAVED |
1504 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1505 SNDRV_PCM_INFO_MMAP_VALID |
1506 /* No full-resume yet implemented */
1507 /* SNDRV_PCM_INFO_RESUME |*/
1508 SNDRV_PCM_INFO_PAUSE |
1509 SNDRV_PCM_INFO_SYNC_START),
1510 .formats = SNDRV_PCM_FMTBIT_S16_LE,
1511 .rates = SNDRV_PCM_RATE_48000,
1512 .rate_min = 48000,
1513 .rate_max = 48000,
1514 .channels_min = 2,
1515 .channels_max = 2,
1516 .buffer_bytes_max = AZX_MAX_BUF_SIZE,
1517 .period_bytes_min = 128,
1518 .period_bytes_max = AZX_MAX_BUF_SIZE / 2,
1519 .periods_min = 2,
1520 .periods_max = AZX_MAX_FRAG,
1521 .fifo_size = 0,
1522 };
1523
1524 struct azx_pcm {
1525 struct azx *chip;
1526 struct hda_codec *codec;
1527 struct hda_pcm_stream *hinfo[2];
1528 };
1529
1530 static int azx_pcm_open(struct snd_pcm_substream *substream)
1531 {
1532 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1533 struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
1534 struct azx *chip = apcm->chip;
1535 struct azx_dev *azx_dev;
1536 struct snd_pcm_runtime *runtime = substream->runtime;
1537 unsigned long flags;
1538 int err;
1539
1540 mutex_lock(&chip->open_mutex);
1541 azx_dev = azx_assign_device(chip, substream);
1542 if (azx_dev == NULL) {
1543 mutex_unlock(&chip->open_mutex);
1544 return -EBUSY;
1545 }
1546 runtime->hw = azx_pcm_hw;
1547 runtime->hw.channels_min = hinfo->channels_min;
1548 runtime->hw.channels_max = hinfo->channels_max;
1549 runtime->hw.formats = hinfo->formats;
1550 runtime->hw.rates = hinfo->rates;
1551 snd_pcm_limit_hw_rates(runtime);
1552 snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
1553 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1554 128);
1555 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1556 128);
1557 snd_hda_power_up(apcm->codec);
1558 err = hinfo->ops.open(hinfo, apcm->codec, substream);
1559 if (err < 0) {
1560 azx_release_device(azx_dev);
1561 snd_hda_power_down(apcm->codec);
1562 mutex_unlock(&chip->open_mutex);
1563 return err;
1564 }
1565 snd_pcm_limit_hw_rates(runtime);
1566 /* sanity check */
1567 if (snd_BUG_ON(!runtime->hw.channels_min) ||
1568 snd_BUG_ON(!runtime->hw.channels_max) ||
1569 snd_BUG_ON(!runtime->hw.formats) ||
1570 snd_BUG_ON(!runtime->hw.rates)) {
1571 azx_release_device(azx_dev);
1572 hinfo->ops.close(hinfo, apcm->codec, substream);
1573 snd_hda_power_down(apcm->codec);
1574 mutex_unlock(&chip->open_mutex);
1575 return -EINVAL;
1576 }
1577 spin_lock_irqsave(&chip->reg_lock, flags);
1578 azx_dev->substream = substream;
1579 azx_dev->running = 0;
1580 spin_unlock_irqrestore(&chip->reg_lock, flags);
1581
1582 runtime->private_data = azx_dev;
1583 snd_pcm_set_sync(substream);
1584 mutex_unlock(&chip->open_mutex);
1585 return 0;
1586 }
1587
1588 static int azx_pcm_close(struct snd_pcm_substream *substream)
1589 {
1590 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1591 struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
1592 struct azx *chip = apcm->chip;
1593 struct azx_dev *azx_dev = get_azx_dev(substream);
1594 unsigned long flags;
1595
1596 mutex_lock(&chip->open_mutex);
1597 spin_lock_irqsave(&chip->reg_lock, flags);
1598 azx_dev->substream = NULL;
1599 azx_dev->running = 0;
1600 spin_unlock_irqrestore(&chip->reg_lock, flags);
1601 azx_release_device(azx_dev);
1602 hinfo->ops.close(hinfo, apcm->codec, substream);
1603 snd_hda_power_down(apcm->codec);
1604 mutex_unlock(&chip->open_mutex);
1605 return 0;
1606 }
1607
1608 static int azx_pcm_hw_params(struct snd_pcm_substream *substream,
1609 struct snd_pcm_hw_params *hw_params)
1610 {
1611 struct azx_dev *azx_dev = get_azx_dev(substream);
1612
1613 azx_dev->bufsize = 0;
1614 azx_dev->period_bytes = 0;
1615 azx_dev->format_val = 0;
1616 return snd_pcm_lib_malloc_pages(substream,
1617 params_buffer_bytes(hw_params));
1618 }
1619
1620 static int azx_pcm_hw_free(struct snd_pcm_substream *substream)
1621 {
1622 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1623 struct azx_dev *azx_dev = get_azx_dev(substream);
1624 struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
1625
1626 /* reset BDL address */
1627 azx_sd_writel(azx_dev, SD_BDLPL, 0);
1628 azx_sd_writel(azx_dev, SD_BDLPU, 0);
1629 azx_sd_writel(azx_dev, SD_CTL, 0);
1630 azx_dev->bufsize = 0;
1631 azx_dev->period_bytes = 0;
1632 azx_dev->format_val = 0;
1633
1634 hinfo->ops.cleanup(hinfo, apcm->codec, substream);
1635
1636 return snd_pcm_lib_free_pages(substream);
1637 }
1638
1639 static int azx_pcm_prepare(struct snd_pcm_substream *substream)
1640 {
1641 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1642 struct azx *chip = apcm->chip;
1643 struct azx_dev *azx_dev = get_azx_dev(substream);
1644 struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
1645 struct snd_pcm_runtime *runtime = substream->runtime;
1646 unsigned int bufsize, period_bytes, format_val;
1647 int err;
1648
1649 azx_stream_reset(chip, azx_dev);
1650 format_val = snd_hda_calc_stream_format(runtime->rate,
1651 runtime->channels,
1652 runtime->format,
1653 hinfo->maxbps);
1654 if (!format_val) {
1655 snd_printk(KERN_ERR SFX
1656 "invalid format_val, rate=%d, ch=%d, format=%d\n",
1657 runtime->rate, runtime->channels, runtime->format);
1658 return -EINVAL;
1659 }
1660
1661 bufsize = snd_pcm_lib_buffer_bytes(substream);
1662 period_bytes = snd_pcm_lib_period_bytes(substream);
1663
1664 snd_printdd(SFX "azx_pcm_prepare: bufsize=0x%x, format=0x%x\n",
1665 bufsize, format_val);
1666
1667 if (bufsize != azx_dev->bufsize ||
1668 period_bytes != azx_dev->period_bytes ||
1669 format_val != azx_dev->format_val) {
1670 azx_dev->bufsize = bufsize;
1671 azx_dev->period_bytes = period_bytes;
1672 azx_dev->format_val = format_val;
1673 err = azx_setup_periods(chip, substream, azx_dev);
1674 if (err < 0)
1675 return err;
1676 }
1677
1678 /* wallclk has 24Mhz clock source */
1679 azx_dev->period_wallclk = (((runtime->period_size * 24000) /
1680 runtime->rate) * 1000);
1681 azx_setup_controller(chip, azx_dev);
1682 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1683 azx_dev->fifo_size = azx_sd_readw(azx_dev, SD_FIFOSIZE) + 1;
1684 else
1685 azx_dev->fifo_size = 0;
1686
1687 return hinfo->ops.prepare(hinfo, apcm->codec, azx_dev->stream_tag,
1688 azx_dev->format_val, substream);
1689 }
1690
1691 static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1692 {
1693 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1694 struct azx *chip = apcm->chip;
1695 struct azx_dev *azx_dev;
1696 struct snd_pcm_substream *s;
1697 int rstart = 0, start, nsync = 0, sbits = 0;
1698 int nwait, timeout;
1699
1700 switch (cmd) {
1701 case SNDRV_PCM_TRIGGER_START:
1702 rstart = 1;
1703 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1704 case SNDRV_PCM_TRIGGER_RESUME:
1705 start = 1;
1706 break;
1707 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1708 case SNDRV_PCM_TRIGGER_SUSPEND:
1709 case SNDRV_PCM_TRIGGER_STOP:
1710 start = 0;
1711 break;
1712 default:
1713 return -EINVAL;
1714 }
1715
1716 snd_pcm_group_for_each_entry(s, substream) {
1717 if (s->pcm->card != substream->pcm->card)
1718 continue;
1719 azx_dev = get_azx_dev(s);
1720 sbits |= 1 << azx_dev->index;
1721 nsync++;
1722 snd_pcm_trigger_done(s, substream);
1723 }
1724
1725 spin_lock(&chip->reg_lock);
1726 if (nsync > 1) {
1727 /* first, set SYNC bits of corresponding streams */
1728 azx_writel(chip, SYNC, azx_readl(chip, SYNC) | sbits);
1729 }
1730 snd_pcm_group_for_each_entry(s, substream) {
1731 if (s->pcm->card != substream->pcm->card)
1732 continue;
1733 azx_dev = get_azx_dev(s);
1734 if (start) {
1735 azx_dev->start_wallclk = azx_readl(chip, WALLCLK);
1736 if (!rstart)
1737 azx_dev->start_wallclk -=
1738 azx_dev->period_wallclk;
1739 azx_stream_start(chip, azx_dev);
1740 } else {
1741 azx_stream_stop(chip, azx_dev);
1742 }
1743 azx_dev->running = start;
1744 }
1745 spin_unlock(&chip->reg_lock);
1746 if (start) {
1747 if (nsync == 1)
1748 return 0;
1749 /* wait until all FIFOs get ready */
1750 for (timeout = 5000; timeout; timeout--) {
1751 nwait = 0;
1752 snd_pcm_group_for_each_entry(s, substream) {
1753 if (s->pcm->card != substream->pcm->card)
1754 continue;
1755 azx_dev = get_azx_dev(s);
1756 if (!(azx_sd_readb(azx_dev, SD_STS) &
1757 SD_STS_FIFO_READY))
1758 nwait++;
1759 }
1760 if (!nwait)
1761 break;
1762 cpu_relax();
1763 }
1764 } else {
1765 /* wait until all RUN bits are cleared */
1766 for (timeout = 5000; timeout; timeout--) {
1767 nwait = 0;
1768 snd_pcm_group_for_each_entry(s, substream) {
1769 if (s->pcm->card != substream->pcm->card)
1770 continue;
1771 azx_dev = get_azx_dev(s);
1772 if (azx_sd_readb(azx_dev, SD_CTL) &
1773 SD_CTL_DMA_START)
1774 nwait++;
1775 }
1776 if (!nwait)
1777 break;
1778 cpu_relax();
1779 }
1780 }
1781 if (nsync > 1) {
1782 spin_lock(&chip->reg_lock);
1783 /* reset SYNC bits */
1784 azx_writel(chip, SYNC, azx_readl(chip, SYNC) & ~sbits);
1785 spin_unlock(&chip->reg_lock);
1786 }
1787 return 0;
1788 }
1789
1790 /* get the current DMA position with correction on VIA chips */
1791 static unsigned int azx_via_get_position(struct azx *chip,
1792 struct azx_dev *azx_dev)
1793 {
1794 unsigned int link_pos, mini_pos, bound_pos;
1795 unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
1796 unsigned int fifo_size;
1797
1798 link_pos = azx_sd_readl(azx_dev, SD_LPIB);
1799 if (azx_dev->index >= 4) {
1800 /* Playback, no problem using link position */
1801 return link_pos;
1802 }
1803
1804 /* Capture */
1805 /* For new chipset,
1806 * use mod to get the DMA position just like old chipset
1807 */
1808 mod_dma_pos = le32_to_cpu(*azx_dev->posbuf);
1809 mod_dma_pos %= azx_dev->period_bytes;
1810
1811 /* azx_dev->fifo_size can't get FIFO size of in stream.
1812 * Get from base address + offset.
1813 */
1814 fifo_size = readw(chip->remap_addr + VIA_IN_STREAM0_FIFO_SIZE_OFFSET);
1815
1816 if (azx_dev->insufficient) {
1817 /* Link position never gather than FIFO size */
1818 if (link_pos <= fifo_size)
1819 return 0;
1820
1821 azx_dev->insufficient = 0;
1822 }
1823
1824 if (link_pos <= fifo_size)
1825 mini_pos = azx_dev->bufsize + link_pos - fifo_size;
1826 else
1827 mini_pos = link_pos - fifo_size;
1828
1829 /* Find nearest previous boudary */
1830 mod_mini_pos = mini_pos % azx_dev->period_bytes;
1831 mod_link_pos = link_pos % azx_dev->period_bytes;
1832 if (mod_link_pos >= fifo_size)
1833 bound_pos = link_pos - mod_link_pos;
1834 else if (mod_dma_pos >= mod_mini_pos)
1835 bound_pos = mini_pos - mod_mini_pos;
1836 else {
1837 bound_pos = mini_pos - mod_mini_pos + azx_dev->period_bytes;
1838 if (bound_pos >= azx_dev->bufsize)
1839 bound_pos = 0;
1840 }
1841
1842 /* Calculate real DMA position we want */
1843 return bound_pos + mod_dma_pos;
1844 }
1845
1846 static unsigned int azx_get_position(struct azx *chip,
1847 struct azx_dev *azx_dev)
1848 {
1849 unsigned int pos;
1850
1851 if (chip->via_dmapos_patch)
1852 pos = azx_via_get_position(chip, azx_dev);
1853 else {
1854 int stream = azx_dev->substream->stream;
1855 if (chip->position_fix[stream] == POS_FIX_POSBUF ||
1856 chip->position_fix[stream] == POS_FIX_AUTO) {
1857 /* use the position buffer */
1858 pos = le32_to_cpu(*azx_dev->posbuf);
1859 } else {
1860 /* read LPIB */
1861 pos = azx_sd_readl(azx_dev, SD_LPIB);
1862 }
1863 }
1864 if (pos >= azx_dev->bufsize)
1865 pos = 0;
1866 return pos;
1867 }
1868
1869 static snd_pcm_uframes_t azx_pcm_pointer(struct snd_pcm_substream *substream)
1870 {
1871 struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1872 struct azx *chip = apcm->chip;
1873 struct azx_dev *azx_dev = get_azx_dev(substream);
1874 return bytes_to_frames(substream->runtime,
1875 azx_get_position(chip, azx_dev));
1876 }
1877
1878 /*
1879 * Check whether the current DMA position is acceptable for updating
1880 * periods. Returns non-zero if it's OK.
1881 *
1882 * Many HD-audio controllers appear pretty inaccurate about
1883 * the update-IRQ timing. The IRQ is issued before actually the
1884 * data is processed. So, we need to process it afterwords in a
1885 * workqueue.
1886 */
1887 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
1888 {
1889 u32 wallclk;
1890 unsigned int pos;
1891 int stream;
1892
1893 wallclk = azx_readl(chip, WALLCLK) - azx_dev->start_wallclk;
1894 if (wallclk < (azx_dev->period_wallclk * 2) / 3)
1895 return -1; /* bogus (too early) interrupt */
1896
1897 stream = azx_dev->substream->stream;
1898 pos = azx_get_position(chip, azx_dev);
1899 if (chip->position_fix[stream] == POS_FIX_AUTO) {
1900 if (!pos) {
1901 printk(KERN_WARNING
1902 "hda-intel: Invalid position buffer, "
1903 "using LPIB read method instead.\n");
1904 chip->position_fix[stream] = POS_FIX_LPIB;
1905 pos = azx_get_position(chip, azx_dev);
1906 } else
1907 chip->position_fix[stream] = POS_FIX_POSBUF;
1908 }
1909
1910 if (WARN_ONCE(!azx_dev->period_bytes,
1911 "hda-intel: zero azx_dev->period_bytes"))
1912 return -1; /* this shouldn't happen! */
1913 if (wallclk <= azx_dev->period_wallclk &&
1914 pos % azx_dev->period_bytes > azx_dev->period_bytes / 2)
1915 /* NG - it's below the first next period boundary */
1916 return bdl_pos_adj[chip->dev_index] ? 0 : -1;
1917 azx_dev->start_wallclk = wallclk;
1918 return 1; /* OK, it's fine */
1919 }
1920
1921 /*
1922 * The work for pending PCM period updates.
1923 */
1924 static void azx_irq_pending_work(struct work_struct *work)
1925 {
1926 struct azx *chip = container_of(work, struct azx, irq_pending_work);
1927 int i, pending, ok;
1928
1929 if (!chip->irq_pending_warned) {
1930 printk(KERN_WARNING
1931 "hda-intel: IRQ timing workaround is activated "
1932 "for card #%d. Suggest a bigger bdl_pos_adj.\n",
1933 chip->card->number);
1934 chip->irq_pending_warned = 1;
1935 }
1936
1937 for (;;) {
1938 pending = 0;
1939 spin_lock_irq(&chip->reg_lock);
1940 for (i = 0; i < chip->num_streams; i++) {
1941 struct azx_dev *azx_dev = &chip->azx_dev[i];
1942 if (!azx_dev->irq_pending ||
1943 !azx_dev->substream ||
1944 !azx_dev->running)
1945 continue;
1946 ok = azx_position_ok(chip, azx_dev);
1947 if (ok > 0) {
1948 azx_dev->irq_pending = 0;
1949 spin_unlock(&chip->reg_lock);
1950 snd_pcm_period_elapsed(azx_dev->substream);
1951 spin_lock(&chip->reg_lock);
1952 } else if (ok < 0) {
1953 pending = 0; /* too early */
1954 } else
1955 pending++;
1956 }
1957 spin_unlock_irq(&chip->reg_lock);
1958 if (!pending)
1959 return;
1960 cond_resched();
1961 }
1962 }
1963
1964 /* clear irq_pending flags and assure no on-going workq */
1965 static void azx_clear_irq_pending(struct azx *chip)
1966 {
1967 int i;
1968
1969 spin_lock_irq(&chip->reg_lock);
1970 for (i = 0; i < chip->num_streams; i++)
1971 chip->azx_dev[i].irq_pending = 0;
1972 spin_unlock_irq(&chip->reg_lock);
1973 }
1974
1975 static struct snd_pcm_ops azx_pcm_ops = {
1976 .open = azx_pcm_open,
1977 .close = azx_pcm_close,
1978 .ioctl = snd_pcm_lib_ioctl,
1979 .hw_params = azx_pcm_hw_params,
1980 .hw_free = azx_pcm_hw_free,
1981 .prepare = azx_pcm_prepare,
1982 .trigger = azx_pcm_trigger,
1983 .pointer = azx_pcm_pointer,
1984 .page = snd_pcm_sgbuf_ops_page,
1985 };
1986
1987 static void azx_pcm_free(struct snd_pcm *pcm)
1988 {
1989 struct azx_pcm *apcm = pcm->private_data;
1990 if (apcm) {
1991 apcm->chip->pcm[pcm->device] = NULL;
1992 kfree(apcm);
1993 }
1994 }
1995
1996 static int
1997 azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec,
1998 struct hda_pcm *cpcm)
1999 {
2000 struct azx *chip = bus->private_data;
2001 struct snd_pcm *pcm;
2002 struct azx_pcm *apcm;
2003 int pcm_dev = cpcm->device;
2004 int s, err;
2005
2006 if (pcm_dev >= HDA_MAX_PCMS) {
2007 snd_printk(KERN_ERR SFX "Invalid PCM device number %d\n",
2008 pcm_dev);
2009 return -EINVAL;
2010 }
2011 if (chip->pcm[pcm_dev]) {
2012 snd_printk(KERN_ERR SFX "PCM %d already exists\n", pcm_dev);
2013 return -EBUSY;
2014 }
2015 err = snd_pcm_new(chip->card, cpcm->name, pcm_dev,
2016 cpcm->stream[SNDRV_PCM_STREAM_PLAYBACK].substreams,
2017 cpcm->stream[SNDRV_PCM_STREAM_CAPTURE].substreams,
2018 &pcm);
2019 if (err < 0)
2020 return err;
2021 strlcpy(pcm->name, cpcm->name, sizeof(pcm->name));
2022 apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
2023 if (apcm == NULL)
2024 return -ENOMEM;
2025 apcm->chip = chip;
2026 apcm->codec = codec;
2027 pcm->private_data = apcm;
2028 pcm->private_free = azx_pcm_free;
2029 if (cpcm->pcm_type == HDA_PCM_TYPE_MODEM)
2030 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
2031 chip->pcm[pcm_dev] = pcm;
2032 cpcm->pcm = pcm;
2033 for (s = 0; s < 2; s++) {
2034 apcm->hinfo[s] = &cpcm->stream[s];
2035 if (cpcm->stream[s].substreams)
2036 snd_pcm_set_ops(pcm, s, &azx_pcm_ops);
2037 }
2038 /* buffer pre-allocation */
2039 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
2040 snd_dma_pci_data(chip->pci),
2041 1024 * 64, 32 * 1024 * 1024);
2042 return 0;
2043 }
2044
2045 /*
2046 * mixer creation - all stuff is implemented in hda module
2047 */
2048 static int __devinit azx_mixer_create(struct azx *chip)
2049 {
2050 return snd_hda_build_controls(chip->bus);
2051 }
2052
2053
2054 /*
2055 * initialize SD streams
2056 */
2057 static int __devinit azx_init_stream(struct azx *chip)
2058 {
2059 int i;
2060
2061 /* initialize each stream (aka device)
2062 * assign the starting bdl address to each stream (device)
2063 * and initialize
2064 */
2065 for (i = 0; i < chip->num_streams; i++) {
2066 struct azx_dev *azx_dev = &chip->azx_dev[i];
2067 azx_dev->posbuf = (u32 __iomem *)(chip->posbuf.area + i * 8);
2068 /* offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
2069 azx_dev->sd_addr = chip->remap_addr + (0x20 * i + 0x80);
2070 /* int mask: SDI0=0x01, SDI1=0x02, ... SDO3=0x80 */
2071 azx_dev->sd_int_sta_mask = 1 << i;
2072 /* stream tag: must be non-zero and unique */
2073 azx_dev->index = i;
2074 azx_dev->stream_tag = i + 1;
2075 }
2076
2077 return 0;
2078 }
2079
2080 static int azx_acquire_irq(struct azx *chip, int do_disconnect)
2081 {
2082 if (request_irq(chip->pci->irq, azx_interrupt,
2083 chip->msi ? 0 : IRQF_SHARED,
2084 "hda_intel", chip)) {
2085 printk(KERN_ERR "hda-intel: unable to grab IRQ %d, "
2086 "disabling device\n", chip->pci->irq);
2087 if (do_disconnect)
2088 snd_card_disconnect(chip->card);
2089 return -1;
2090 }
2091 chip->irq = chip->pci->irq;
2092 pci_intx(chip->pci, !chip->msi);
2093 return 0;
2094 }
2095
2096
2097 static void azx_stop_chip(struct azx *chip)
2098 {
2099 if (!chip->initialized)
2100 return;
2101
2102 /* disable interrupts */
2103 azx_int_disable(chip);
2104 azx_int_clear(chip);
2105
2106 /* disable CORB/RIRB */
2107 azx_free_cmd_io(chip);
2108
2109 /* disable position buffer */
2110 azx_writel(chip, DPLBASE, 0);
2111 azx_writel(chip, DPUBASE, 0);
2112
2113 chip->initialized = 0;
2114 }
2115
2116 #ifdef CONFIG_SND_HDA_POWER_SAVE
2117 /* power-up/down the controller */
2118 static void azx_power_notify(struct hda_bus *bus)
2119 {
2120 struct azx *chip = bus->private_data;
2121 struct hda_codec *c;
2122 int power_on = 0;
2123
2124 list_for_each_entry(c, &bus->codec_list, list) {
2125 if (c->power_on) {
2126 power_on = 1;
2127 break;
2128 }
2129 }
2130 if (power_on)
2131 azx_init_chip(chip, 1);
2132 else if (chip->running && power_save_controller &&
2133 !bus->power_keep_link_on)
2134 azx_stop_chip(chip);
2135 }
2136 #endif /* CONFIG_SND_HDA_POWER_SAVE */
2137
2138 #ifdef CONFIG_PM
2139 /*
2140 * power management
2141 */
2142
2143 static int snd_hda_codecs_inuse(struct hda_bus *bus)
2144 {
2145 struct hda_codec *codec;
2146
2147 list_for_each_entry(codec, &bus->codec_list, list) {
2148 if (snd_hda_codec_needs_resume(codec))
2149 return 1;
2150 }
2151 return 0;
2152 }
2153
2154 static int azx_suspend(struct pci_dev *pci, pm_message_t state)
2155 {
2156 struct snd_card *card = pci_get_drvdata(pci);
2157 struct azx *chip = card->private_data;
2158 int i;
2159
2160 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2161 azx_clear_irq_pending(chip);
2162 for (i = 0; i < HDA_MAX_PCMS; i++)
2163 snd_pcm_suspend_all(chip->pcm[i]);
2164 if (chip->initialized)
2165 snd_hda_suspend(chip->bus);
2166 azx_stop_chip(chip);
2167 if (chip->irq >= 0) {
2168 free_irq(chip->irq, chip);
2169 chip->irq = -1;
2170 }
2171 if (chip->msi)
2172 pci_disable_msi(chip->pci);
2173 pci_disable_device(pci);
2174 pci_save_state(pci);
2175 pci_set_power_state(pci, pci_choose_state(pci, state));
2176 return 0;
2177 }
2178
2179 static int azx_resume(struct pci_dev *pci)
2180 {
2181 struct snd_card *card = pci_get_drvdata(pci);
2182 struct azx *chip = card->private_data;
2183
2184 pci_set_power_state(pci, PCI_D0);
2185 pci_restore_state(pci);
2186 if (pci_enable_device(pci) < 0) {
2187 printk(KERN_ERR "hda-intel: pci_enable_device failed, "
2188 "disabling device\n");
2189 snd_card_disconnect(card);
2190 return -EIO;
2191 }
2192 pci_set_master(pci);
2193 if (chip->msi)
2194 if (pci_enable_msi(pci) < 0)
2195 chip->msi = 0;
2196 if (azx_acquire_irq(chip, 1) < 0)
2197 return -EIO;
2198 azx_init_pci(chip);
2199
2200 if (snd_hda_codecs_inuse(chip->bus))
2201 azx_init_chip(chip, 1);
2202
2203 snd_hda_resume(chip->bus);
2204 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2205 return 0;
2206 }
2207 #endif /* CONFIG_PM */
2208
2209
2210 /*
2211 * reboot notifier for hang-up problem at power-down
2212 */
2213 static int azx_halt(struct notifier_block *nb, unsigned long event, void *buf)
2214 {
2215 struct azx *chip = container_of(nb, struct azx, reboot_notifier);
2216 snd_hda_bus_reboot_notify(chip->bus);
2217 azx_stop_chip(chip);
2218 return NOTIFY_OK;
2219 }
2220
2221 static void azx_notifier_register(struct azx *chip)
2222 {
2223 chip->reboot_notifier.notifier_call = azx_halt;
2224 register_reboot_notifier(&chip->reboot_notifier);
2225 }
2226
2227 static void azx_notifier_unregister(struct azx *chip)
2228 {
2229 if (chip->reboot_notifier.notifier_call)
2230 unregister_reboot_notifier(&chip->reboot_notifier);
2231 }
2232
2233 /*
2234 * destructor
2235 */
2236 static int azx_free(struct azx *chip)
2237 {
2238 int i;
2239
2240 azx_notifier_unregister(chip);
2241
2242 if (chip->initialized) {
2243 azx_clear_irq_pending(chip);
2244 for (i = 0; i < chip->num_streams; i++)
2245 azx_stream_stop(chip, &chip->azx_dev[i]);
2246 azx_stop_chip(chip);
2247 }
2248
2249 if (chip->irq >= 0)
2250 free_irq(chip->irq, (void*)chip);
2251 if (chip->msi)
2252 pci_disable_msi(chip->pci);
2253 if (chip->remap_addr)
2254 iounmap(chip->remap_addr);
2255
2256 if (chip->azx_dev) {
2257 for (i = 0; i < chip->num_streams; i++)
2258 if (chip->azx_dev[i].bdl.area)
2259 snd_dma_free_pages(&chip->azx_dev[i].bdl);
2260 }
2261 if (chip->rb.area)
2262 snd_dma_free_pages(&chip->rb);
2263 if (chip->posbuf.area)
2264 snd_dma_free_pages(&chip->posbuf);
2265 pci_release_regions(chip->pci);
2266 pci_disable_device(chip->pci);
2267 kfree(chip->azx_dev);
2268 kfree(chip);
2269
2270 return 0;
2271 }
2272
2273 static int azx_dev_free(struct snd_device *device)
2274 {
2275 return azx_free(device->device_data);
2276 }
2277
2278 /*
2279 * white/black-listing for position_fix
2280 */
2281 static struct snd_pci_quirk position_fix_list[] __devinitdata = {
2282 SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
2283 SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
2284 SND_PCI_QUIRK(0x1028, 0x01f6, "Dell Latitude 131L", POS_FIX_LPIB),
2285 SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
2286 SND_PCI_QUIRK(0x1106, 0x3288, "ASUS M2V-MX SE", POS_FIX_LPIB),
2287 SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
2288 SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
2289 SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
2290 SND_PCI_QUIRK(0x1565, 0x820f, "Biostar Microtech", POS_FIX_LPIB),
2291 SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
2292 SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
2293 SND_PCI_QUIRK(0x8086, 0xd601, "eMachines T5212", POS_FIX_LPIB),
2294 {}
2295 };
2296
2297 static int __devinit check_position_fix(struct azx *chip, int fix)
2298 {
2299 const struct snd_pci_quirk *q;
2300
2301 switch (fix) {
2302 case POS_FIX_LPIB:
2303 case POS_FIX_POSBUF:
2304 return fix;
2305 }
2306
2307 /* Check VIA/ATI HD Audio Controller exist */
2308 switch (chip->driver_type) {
2309 case AZX_DRIVER_VIA:
2310 case AZX_DRIVER_ATI:
2311 chip->via_dmapos_patch = 1;
2312 /* Use link position directly, avoid any transfer problem. */
2313 return POS_FIX_LPIB;
2314 }
2315 chip->via_dmapos_patch = 0;
2316
2317 q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
2318 if (q) {
2319 printk(KERN_INFO
2320 "hda_intel: position_fix set to %d "
2321 "for device %04x:%04x\n",
2322 q->value, q->subvendor, q->subdevice);
2323 return q->value;
2324 }
2325 return POS_FIX_AUTO;
2326 }
2327
2328 /*
2329 * black-lists for probe_mask
2330 */
2331 static struct snd_pci_quirk probe_mask_list[] __devinitdata = {
2332 /* Thinkpad often breaks the controller communication when accessing
2333 * to the non-working (or non-existing) modem codec slot.
2334 */
2335 SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
2336 SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
2337 SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
2338 /* broken BIOS */
2339 SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
2340 /* including bogus ALC268 in slot#2 that conflicts with ALC888 */
2341 SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
2342 /* forced codec slots */
2343 SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
2344 SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
2345 {}
2346 };
2347
2348 #define AZX_FORCE_CODEC_MASK 0x100
2349
2350 static void __devinit check_probe_mask(struct azx *chip, int dev)
2351 {
2352 const struct snd_pci_quirk *q;
2353
2354 chip->codec_probe_mask = probe_mask[dev];
2355 if (chip->codec_probe_mask == -1) {
2356 q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
2357 if (q) {
2358 printk(KERN_INFO
2359 "hda_intel: probe_mask set to 0x%x "
2360 "for device %04x:%04x\n",
2361 q->value, q->subvendor, q->subdevice);
2362 chip->codec_probe_mask = q->value;
2363 }
2364 }
2365
2366 /* check forced option */
2367 if (chip->codec_probe_mask != -1 &&
2368 (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
2369 chip->codec_mask = chip->codec_probe_mask & 0xff;
2370 printk(KERN_INFO "hda_intel: codec_mask forced to 0x%x\n",
2371 chip->codec_mask);
2372 }
2373 }
2374
2375 /*
2376 * white/black-list for enable_msi
2377 */
2378 static struct snd_pci_quirk msi_black_list[] __devinitdata = {
2379 SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
2380 SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
2381 SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
2382 SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
2383 SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
2384 {}
2385 };
2386
2387 static void __devinit check_msi(struct azx *chip)
2388 {
2389 const struct snd_pci_quirk *q;
2390
2391 if (enable_msi >= 0) {
2392 chip->msi = !!enable_msi;
2393 return;
2394 }
2395 chip->msi = 1; /* enable MSI as default */
2396 q = snd_pci_quirk_lookup(chip->pci, msi_black_list);
2397 if (q) {
2398 printk(KERN_INFO
2399 "hda_intel: msi for device %04x:%04x set to %d\n",
2400 q->subvendor, q->subdevice, q->value);
2401 chip->msi = q->value;
2402 return;
2403 }
2404
2405 /* NVidia chipsets seem to cause troubles with MSI */
2406 if (chip->driver_type == AZX_DRIVER_NVIDIA) {
2407 printk(KERN_INFO "hda_intel: Disable MSI for Nvidia chipset\n");
2408 chip->msi = 0;
2409 }
2410 }
2411
2412
2413 /*
2414 * constructor
2415 */
2416 static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
2417 int dev, int driver_type,
2418 struct azx **rchip)
2419 {
2420 struct azx *chip;
2421 int i, err;
2422 unsigned short gcap;
2423 static struct snd_device_ops ops = {
2424 .dev_free = azx_dev_free,
2425 };
2426
2427 *rchip = NULL;
2428
2429 err = pci_enable_device(pci);
2430 if (err < 0)
2431 return err;
2432
2433 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
2434 if (!chip) {
2435 snd_printk(KERN_ERR SFX "cannot allocate chip\n");
2436 pci_disable_device(pci);
2437 return -ENOMEM;
2438 }
2439
2440 spin_lock_init(&chip->reg_lock);
2441 mutex_init(&chip->open_mutex);
2442 chip->card = card;
2443 chip->pci = pci;
2444 chip->irq = -1;
2445 chip->driver_type = driver_type;
2446 check_msi(chip);
2447 chip->dev_index = dev;
2448 INIT_WORK(&chip->irq_pending_work, azx_irq_pending_work);
2449
2450 chip->position_fix[0] = chip->position_fix[1] =
2451 check_position_fix(chip, position_fix[dev]);
2452 check_probe_mask(chip, dev);
2453
2454 chip->single_cmd = single_cmd;
2455
2456 if (bdl_pos_adj[dev] < 0) {
2457 switch (chip->driver_type) {
2458 case AZX_DRIVER_ICH:
2459 case AZX_DRIVER_PCH:
2460 bdl_pos_adj[dev] = 1;
2461 break;
2462 default:
2463 bdl_pos_adj[dev] = 32;
2464 break;
2465 }
2466 }
2467
2468 #if BITS_PER_LONG != 64
2469 /* Fix up base address on ULI M5461 */
2470 if (chip->driver_type == AZX_DRIVER_ULI) {
2471 u16 tmp3;
2472 pci_read_config_word(pci, 0x40, &tmp3);
2473 pci_write_config_word(pci, 0x40, tmp3 | 0x10);
2474 pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
2475 }
2476 #endif
2477
2478 err = pci_request_regions(pci, "ICH HD audio");
2479 if (err < 0) {
2480 kfree(chip);
2481 pci_disable_device(pci);
2482 return err;
2483 }
2484
2485 chip->addr = pci_resource_start(pci, 0);
2486 chip->remap_addr = pci_ioremap_bar(pci, 0);
2487 if (chip->remap_addr == NULL) {
2488 snd_printk(KERN_ERR SFX "ioremap error\n");
2489 err = -ENXIO;
2490 goto errout;
2491 }
2492
2493 if (chip->msi)
2494 if (pci_enable_msi(pci) < 0)
2495 chip->msi = 0;
2496
2497 if (azx_acquire_irq(chip, 0) < 0) {
2498 err = -EBUSY;
2499 goto errout;
2500 }
2501
2502 pci_set_master(pci);
2503 synchronize_irq(chip->irq);
2504
2505 gcap = azx_readw(chip, GCAP);
2506 snd_printdd(SFX "chipset global capabilities = 0x%x\n", gcap);
2507
2508 /* disable SB600 64bit support for safety */
2509 if ((chip->driver_type == AZX_DRIVER_ATI) ||
2510 (chip->driver_type == AZX_DRIVER_ATIHDMI)) {
2511 struct pci_dev *p_smbus;
2512 p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
2513 PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2514 NULL);
2515 if (p_smbus) {
2516 if (p_smbus->revision < 0x30)
2517 gcap &= ~ICH6_GCAP_64OK;
2518 pci_dev_put(p_smbus);
2519 }
2520 }
2521
2522 /* disable 64bit DMA address for Teradici */
2523 /* it does not work with device 6549:1200 subsys e4a2:040b */
2524 if (chip->driver_type == AZX_DRIVER_TERA)
2525 gcap &= ~ICH6_GCAP_64OK;
2526
2527 /* allow 64bit DMA address if supported by H/W */
2528 if ((gcap & ICH6_GCAP_64OK) && !pci_set_dma_mask(pci, DMA_BIT_MASK(64)))
2529 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(64));
2530 else {
2531 pci_set_dma_mask(pci, DMA_BIT_MASK(32));
2532 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32));
2533 }
2534
2535 /* read number of streams from GCAP register instead of using
2536 * hardcoded value
2537 */
2538 chip->capture_streams = (gcap >> 8) & 0x0f;
2539 chip->playback_streams = (gcap >> 12) & 0x0f;
2540 if (!chip->playback_streams && !chip->capture_streams) {
2541 /* gcap didn't give any info, switching to old method */
2542
2543 switch (chip->driver_type) {
2544 case AZX_DRIVER_ULI:
2545 chip->playback_streams = ULI_NUM_PLAYBACK;
2546 chip->capture_streams = ULI_NUM_CAPTURE;
2547 break;
2548 case AZX_DRIVER_ATIHDMI:
2549 chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
2550 chip->capture_streams = ATIHDMI_NUM_CAPTURE;
2551 break;
2552 case AZX_DRIVER_GENERIC:
2553 default:
2554 chip->playback_streams = ICH6_NUM_PLAYBACK;
2555 chip->capture_streams = ICH6_NUM_CAPTURE;
2556 break;
2557 }
2558 }
2559 chip->capture_index_offset = 0;
2560 chip->playback_index_offset = chip->capture_streams;
2561 chip->num_streams = chip->playback_streams + chip->capture_streams;
2562 chip->azx_dev = kcalloc(chip->num_streams, sizeof(*chip->azx_dev),
2563 GFP_KERNEL);
2564 if (!chip->azx_dev) {
2565 snd_printk(KERN_ERR SFX "cannot malloc azx_dev\n");
2566 goto errout;
2567 }
2568
2569 for (i = 0; i < chip->num_streams; i++) {
2570 /* allocate memory for the BDL for each stream */
2571 err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
2572 snd_dma_pci_data(chip->pci),
2573 BDL_SIZE, &chip->azx_dev[i].bdl);
2574 if (err < 0) {
2575 snd_printk(KERN_ERR SFX "cannot allocate BDL\n");
2576 goto errout;
2577 }
2578 }
2579 /* allocate memory for the position buffer */
2580 err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
2581 snd_dma_pci_data(chip->pci),
2582 chip->num_streams * 8, &chip->posbuf);
2583 if (err < 0) {
2584 snd_printk(KERN_ERR SFX "cannot allocate posbuf\n");
2585 goto errout;
2586 }
2587 /* allocate CORB/RIRB */
2588 err = azx_alloc_cmd_io(chip);
2589 if (err < 0)
2590 goto errout;
2591
2592 /* initialize streams */
2593 azx_init_stream(chip);
2594
2595 /* initialize chip */
2596 azx_init_pci(chip);
2597 azx_init_chip(chip, (probe_only[dev] & 2) == 0);
2598
2599 /* codec detection */
2600 if (!chip->codec_mask) {
2601 snd_printk(KERN_ERR SFX "no codecs found!\n");
2602 err = -ENODEV;
2603 goto errout;
2604 }
2605
2606 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
2607 if (err <0) {
2608 snd_printk(KERN_ERR SFX "Error creating device [card]!\n");
2609 goto errout;
2610 }
2611
2612 strcpy(card->driver, "HDA-Intel");
2613 strlcpy(card->shortname, driver_short_names[chip->driver_type],
2614 sizeof(card->shortname));
2615 snprintf(card->longname, sizeof(card->longname),
2616 "%s at 0x%lx irq %i",
2617 card->shortname, chip->addr, chip->irq);
2618
2619 *rchip = chip;
2620 return 0;
2621
2622 errout:
2623 azx_free(chip);
2624 return err;
2625 }
2626
2627 static void power_down_all_codecs(struct azx *chip)
2628 {
2629 #ifdef CONFIG_SND_HDA_POWER_SAVE
2630 /* The codecs were powered up in snd_hda_codec_new().
2631 * Now all initialization done, so turn them down if possible
2632 */
2633 struct hda_codec *codec;
2634 list_for_each_entry(codec, &chip->bus->codec_list, list) {
2635 snd_hda_power_down(codec);
2636 }
2637 #endif
2638 }
2639
2640 static int __devinit azx_probe(struct pci_dev *pci,
2641 const struct pci_device_id *pci_id)
2642 {
2643 static int dev;
2644 struct snd_card *card;
2645 struct azx *chip;
2646 int err;
2647
2648 if (dev >= SNDRV_CARDS)
2649 return -ENODEV;
2650 if (!enable[dev]) {
2651 dev++;
2652 return -ENOENT;
2653 }
2654
2655 err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
2656 if (err < 0) {
2657 snd_printk(KERN_ERR SFX "Error creating card!\n");
2658 return err;
2659 }
2660
2661 /* set this here since it's referred in snd_hda_load_patch() */
2662 snd_card_set_dev(card, &pci->dev);
2663
2664 err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
2665 if (err < 0)
2666 goto out_free;
2667 card->private_data = chip;
2668
2669 #ifdef CONFIG_SND_HDA_INPUT_BEEP
2670 chip->beep_mode = beep_mode[dev];
2671 #endif
2672
2673 /* create codec instances */
2674 err = azx_codec_create(chip, model[dev]);
2675 if (err < 0)
2676 goto out_free;
2677 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2678 if (patch[dev]) {
2679 snd_printk(KERN_ERR SFX "Applying patch firmware '%s'\n",
2680 patch[dev]);
2681 err = snd_hda_load_patch(chip->bus, patch[dev]);
2682 if (err < 0)
2683 goto out_free;
2684 }
2685 #endif
2686 if ((probe_only[dev] & 1) == 0) {
2687 err = azx_codec_configure(chip);
2688 if (err < 0)
2689 goto out_free;
2690 }
2691
2692 /* create PCM streams */
2693 err = snd_hda_build_pcms(chip->bus);
2694 if (err < 0)
2695 goto out_free;
2696
2697 /* create mixer controls */
2698 err = azx_mixer_create(chip);
2699 if (err < 0)
2700 goto out_free;
2701
2702 err = snd_card_register(card);
2703 if (err < 0)
2704 goto out_free;
2705
2706 pci_set_drvdata(pci, card);
2707 chip->running = 1;
2708 power_down_all_codecs(chip);
2709 azx_notifier_register(chip);
2710
2711 dev++;
2712 return err;
2713 out_free:
2714 snd_card_free(card);
2715 return err;
2716 }
2717
2718 static void __devexit azx_remove(struct pci_dev *pci)
2719 {
2720 snd_card_free(pci_get_drvdata(pci));
2721 pci_set_drvdata(pci, NULL);
2722 }
2723
2724 /* PCI IDs */
2725 static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
2726 /* ICH 6..10 */
2727 { PCI_DEVICE(0x8086, 0x2668), .driver_data = AZX_DRIVER_ICH },
2728 { PCI_DEVICE(0x8086, 0x27d8), .driver_data = AZX_DRIVER_ICH },
2729 { PCI_DEVICE(0x8086, 0x269a), .driver_data = AZX_DRIVER_ICH },
2730 { PCI_DEVICE(0x8086, 0x284b), .driver_data = AZX_DRIVER_ICH },
2731 { PCI_DEVICE(0x8086, 0x2911), .driver_data = AZX_DRIVER_ICH },
2732 { PCI_DEVICE(0x8086, 0x293e), .driver_data = AZX_DRIVER_ICH },
2733 { PCI_DEVICE(0x8086, 0x293f), .driver_data = AZX_DRIVER_ICH },
2734 { PCI_DEVICE(0x8086, 0x3a3e), .driver_data = AZX_DRIVER_ICH },
2735 { PCI_DEVICE(0x8086, 0x3a6e), .driver_data = AZX_DRIVER_ICH },
2736 /* PCH */
2737 { PCI_DEVICE(0x8086, 0x3b56), .driver_data = AZX_DRIVER_ICH },
2738 { PCI_DEVICE(0x8086, 0x3b57), .driver_data = AZX_DRIVER_ICH },
2739 /* CPT */
2740 { PCI_DEVICE(0x8086, 0x1c20), .driver_data = AZX_DRIVER_PCH },
2741 /* SCH */
2742 { PCI_DEVICE(0x8086, 0x811b), .driver_data = AZX_DRIVER_SCH },
2743 /* ATI SB 450/600 */
2744 { PCI_DEVICE(0x1002, 0x437b), .driver_data = AZX_DRIVER_ATI },
2745 { PCI_DEVICE(0x1002, 0x4383), .driver_data = AZX_DRIVER_ATI },
2746 /* ATI HDMI */
2747 { PCI_DEVICE(0x1002, 0x793b), .driver_data = AZX_DRIVER_ATIHDMI },
2748 { PCI_DEVICE(0x1002, 0x7919), .driver_data = AZX_DRIVER_ATIHDMI },
2749 { PCI_DEVICE(0x1002, 0x960f), .driver_data = AZX_DRIVER_ATIHDMI },
2750 { PCI_DEVICE(0x1002, 0x970f), .driver_data = AZX_DRIVER_ATIHDMI },
2751 { PCI_DEVICE(0x1002, 0xaa00), .driver_data = AZX_DRIVER_ATIHDMI },
2752 { PCI_DEVICE(0x1002, 0xaa08), .driver_data = AZX_DRIVER_ATIHDMI },
2753 { PCI_DEVICE(0x1002, 0xaa10), .driver_data = AZX_DRIVER_ATIHDMI },
2754 { PCI_DEVICE(0x1002, 0xaa18), .driver_data = AZX_DRIVER_ATIHDMI },
2755 { PCI_DEVICE(0x1002, 0xaa20), .driver_data = AZX_DRIVER_ATIHDMI },
2756 { PCI_DEVICE(0x1002, 0xaa28), .driver_data = AZX_DRIVER_ATIHDMI },
2757 { PCI_DEVICE(0x1002, 0xaa30), .driver_data = AZX_DRIVER_ATIHDMI },
2758 { PCI_DEVICE(0x1002, 0xaa38), .driver_data = AZX_DRIVER_ATIHDMI },
2759 { PCI_DEVICE(0x1002, 0xaa40), .driver_data = AZX_DRIVER_ATIHDMI },
2760 { PCI_DEVICE(0x1002, 0xaa48), .driver_data = AZX_DRIVER_ATIHDMI },
2761 /* VIA VT8251/VT8237A */
2762 { PCI_DEVICE(0x1106, 0x3288), .driver_data = AZX_DRIVER_VIA },
2763 /* SIS966 */
2764 { PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
2765 /* ULI M5461 */
2766 { PCI_DEVICE(0x10b9, 0x5461), .driver_data = AZX_DRIVER_ULI },
2767 /* NVIDIA MCP */
2768 { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
2769 .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2770 .class_mask = 0xffffff,
2771 .driver_data = AZX_DRIVER_NVIDIA },
2772 /* Teradici */
2773 { PCI_DEVICE(0x6549, 0x1200), .driver_data = AZX_DRIVER_TERA },
2774 /* Creative X-Fi (CA0110-IBG) */
2775 #if !defined(CONFIG_SND_CTXFI) && !defined(CONFIG_SND_CTXFI_MODULE)
2776 /* the following entry conflicts with snd-ctxfi driver,
2777 * as ctxfi driver mutates from HD-audio to native mode with
2778 * a special command sequence.
2779 */
2780 { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
2781 .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2782 .class_mask = 0xffffff,
2783 .driver_data = AZX_DRIVER_GENERIC },
2784 #else
2785 /* this entry seems still valid -- i.e. without emu20kx chip */
2786 { PCI_DEVICE(0x1102, 0x0009), .driver_data = AZX_DRIVER_GENERIC },
2787 #endif
2788 /* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2789 { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
2790 .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2791 .class_mask = 0xffffff,
2792 .driver_data = AZX_DRIVER_GENERIC },
2793 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
2794 .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2795 .class_mask = 0xffffff,
2796 .driver_data = AZX_DRIVER_GENERIC },
2797 { 0, }
2798 };
2799 MODULE_DEVICE_TABLE(pci, azx_ids);
2800
2801 /* pci_driver definition */
2802 static struct pci_driver driver = {
2803 .name = "HDA Intel",
2804 .id_table = azx_ids,
2805 .probe = azx_probe,
2806 .remove = __devexit_p(azx_remove),
2807 #ifdef CONFIG_PM
2808 .suspend = azx_suspend,
2809 .resume = azx_resume,
2810 #endif
2811 };
2812
2813 static int __init alsa_card_azx_init(void)
2814 {
2815 return pci_register_driver(&driver);
2816 }
2817
2818 static void __exit alsa_card_azx_exit(void)
2819 {
2820 pci_unregister_driver(&driver);
2821 }
2822
2823 module_init(alsa_card_azx_init)
2824 module_exit(alsa_card_azx_exit)
Linux kernel - Deliverables
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