ALSA: hda - Define max number of PCM devices in hda_codec.h
[linux-2.6.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, bool, 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_WALCLK                 0x30
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          4
271 #define STATESTS_INT_MASK       ((1 << AZX_MAX_CODECS) - 1)
272
273 /* SD_CTL bits */
274 #define SD_CTL_STREAM_RESET     0x01    /* stream reset bit */
275 #define SD_CTL_DMA_START        0x02    /* stream DMA start bit */
276 #define SD_CTL_STRIPE           (3 << 16)       /* stripe control */
277 #define SD_CTL_TRAFFIC_PRIO     (1 << 18)       /* traffic priority */
278 #define SD_CTL_DIR              (1 << 19)       /* bi-directional stream */
279 #define SD_CTL_STREAM_TAG_MASK  (0xf << 20)
280 #define SD_CTL_STREAM_TAG_SHIFT 20
281
282 /* SD_CTL and SD_STS */
283 #define SD_INT_DESC_ERR         0x10    /* descriptor error interrupt */
284 #define SD_INT_FIFO_ERR         0x08    /* FIFO error interrupt */
285 #define SD_INT_COMPLETE         0x04    /* completion interrupt */
286 #define SD_INT_MASK             (SD_INT_DESC_ERR|SD_INT_FIFO_ERR|\
287                                  SD_INT_COMPLETE)
288
289 /* SD_STS */
290 #define SD_STS_FIFO_READY       0x20    /* FIFO ready */
291
292 /* INTCTL and INTSTS */
293 #define ICH6_INT_ALL_STREAM     0xff       /* all stream interrupts */
294 #define ICH6_INT_CTRL_EN        0x40000000 /* controller interrupt enable bit */
295 #define ICH6_INT_GLOBAL_EN      0x80000000 /* global interrupt enable bit */
296
297 /* below are so far hardcoded - should read registers in future */
298 #define ICH6_MAX_CORB_ENTRIES   256
299 #define ICH6_MAX_RIRB_ENTRIES   256
300
301 /* position fix mode */
302 enum {
303         POS_FIX_AUTO,
304         POS_FIX_LPIB,
305         POS_FIX_POSBUF,
306 };
307
308 /* Defines for ATI HD Audio support in SB450 south bridge */
309 #define ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR   0x42
310 #define ATI_SB450_HDAUDIO_ENABLE_SNOOP      0x02
311
312 /* Defines for Nvidia HDA support */
313 #define NVIDIA_HDA_TRANSREG_ADDR      0x4e
314 #define NVIDIA_HDA_ENABLE_COHBITS     0x0f
315 #define NVIDIA_HDA_ISTRM_COH          0x4d
316 #define NVIDIA_HDA_OSTRM_COH          0x4c
317 #define NVIDIA_HDA_ENABLE_COHBIT      0x01
318
319 /* Defines for Intel SCH HDA snoop control */
320 #define INTEL_SCH_HDA_DEVC      0x78
321 #define INTEL_SCH_HDA_DEVC_NOSNOOP       (0x1<<11)
322
323 /* Define IN stream 0 FIFO size offset in VIA controller */
324 #define VIA_IN_STREAM0_FIFO_SIZE_OFFSET 0x90
325 /* Define VIA HD Audio Device ID*/
326 #define VIA_HDAC_DEVICE_ID              0x3288
327
328 /* HD Audio class code */
329 #define PCI_CLASS_MULTIMEDIA_HD_AUDIO   0x0403
330
331 /*
332  */
333
334 struct azx_dev {
335         struct snd_dma_buffer bdl; /* BDL buffer */
336         u32 *posbuf;            /* position buffer pointer */
337
338         unsigned int bufsize;   /* size of the play buffer in bytes */
339         unsigned int period_bytes; /* size of the period in bytes */
340         unsigned int frags;     /* number for period in the play buffer */
341         unsigned int fifo_size; /* FIFO size */
342         unsigned long start_jiffies;    /* start + minimum jiffies */
343         unsigned long min_jiffies;      /* minimum jiffies before position is valid */
344
345         void __iomem *sd_addr;  /* stream descriptor pointer */
346
347         u32 sd_int_sta_mask;    /* stream int status mask */
348
349         /* pcm support */
350         struct snd_pcm_substream *substream;    /* assigned substream,
351                                                  * set in PCM open
352                                                  */
353         unsigned int format_val;        /* format value to be set in the
354                                          * controller and the codec
355                                          */
356         unsigned char stream_tag;       /* assigned stream */
357         unsigned char index;            /* stream index */
358         int device;                     /* last device number assigned to */
359
360         unsigned int opened :1;
361         unsigned int running :1;
362         unsigned int irq_pending :1;
363         unsigned int start_flag: 1;     /* stream full start flag */
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;
428         unsigned int running :1;
429         unsigned int initialized :1;
430         unsigned int single_cmd :1;
431         unsigned int polling_mode :1;
432         unsigned int msi :1;
433         unsigned int irq_pending_warned :1;
434         unsigned int via_dmapos_patch :1; /* enable DMA-position fix for VIA */
435         unsigned int probing :1; /* codec probing phase */
436
437         /* for debugging */
438         unsigned int last_cmd[AZX_MAX_CODECS];
439
440         /* for pending irqs */
441         struct work_struct irq_pending_work;
442
443         /* reboot notifier (for mysterious hangup problem at power-down) */
444         struct notifier_block reboot_notifier;
445 };
446
447 /* driver types */
448 enum {
449         AZX_DRIVER_ICH,
450         AZX_DRIVER_SCH,
451         AZX_DRIVER_ATI,
452         AZX_DRIVER_ATIHDMI,
453         AZX_DRIVER_VIA,
454         AZX_DRIVER_SIS,
455         AZX_DRIVER_ULI,
456         AZX_DRIVER_NVIDIA,
457         AZX_DRIVER_TERA,
458         AZX_DRIVER_GENERIC,
459         AZX_NUM_DRIVERS, /* keep this as last entry */
460 };
461
462 static char *driver_short_names[] __devinitdata = {
463         [AZX_DRIVER_ICH] = "HDA Intel",
464         [AZX_DRIVER_SCH] = "HDA Intel MID",
465         [AZX_DRIVER_ATI] = "HDA ATI SB",
466         [AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
467         [AZX_DRIVER_VIA] = "HDA VIA VT82xx",
468         [AZX_DRIVER_SIS] = "HDA SIS966",
469         [AZX_DRIVER_ULI] = "HDA ULI M5461",
470         [AZX_DRIVER_NVIDIA] = "HDA NVidia",
471         [AZX_DRIVER_TERA] = "HDA Teradici", 
472         [AZX_DRIVER_GENERIC] = "HD-Audio Generic",
473 };
474
475 /*
476  * macros for easy use
477  */
478 #define azx_writel(chip,reg,value) \
479         writel(value, (chip)->remap_addr + ICH6_REG_##reg)
480 #define azx_readl(chip,reg) \
481         readl((chip)->remap_addr + ICH6_REG_##reg)
482 #define azx_writew(chip,reg,value) \
483         writew(value, (chip)->remap_addr + ICH6_REG_##reg)
484 #define azx_readw(chip,reg) \
485         readw((chip)->remap_addr + ICH6_REG_##reg)
486 #define azx_writeb(chip,reg,value) \
487         writeb(value, (chip)->remap_addr + ICH6_REG_##reg)
488 #define azx_readb(chip,reg) \
489         readb((chip)->remap_addr + ICH6_REG_##reg)
490
491 #define azx_sd_writel(dev,reg,value) \
492         writel(value, (dev)->sd_addr + ICH6_REG_##reg)
493 #define azx_sd_readl(dev,reg) \
494         readl((dev)->sd_addr + ICH6_REG_##reg)
495 #define azx_sd_writew(dev,reg,value) \
496         writew(value, (dev)->sd_addr + ICH6_REG_##reg)
497 #define azx_sd_readw(dev,reg) \
498         readw((dev)->sd_addr + ICH6_REG_##reg)
499 #define azx_sd_writeb(dev,reg,value) \
500         writeb(value, (dev)->sd_addr + ICH6_REG_##reg)
501 #define azx_sd_readb(dev,reg) \
502         readb((dev)->sd_addr + ICH6_REG_##reg)
503
504 /* for pcm support */
505 #define get_azx_dev(substream) (substream->runtime->private_data)
506
507 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
508
509 /*
510  * Interface for HD codec
511  */
512
513 /*
514  * CORB / RIRB interface
515  */
516 static int azx_alloc_cmd_io(struct azx *chip)
517 {
518         int err;
519
520         /* single page (at least 4096 bytes) must suffice for both ringbuffes */
521         err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
522                                   snd_dma_pci_data(chip->pci),
523                                   PAGE_SIZE, &chip->rb);
524         if (err < 0) {
525                 snd_printk(KERN_ERR SFX "cannot allocate CORB/RIRB\n");
526                 return err;
527         }
528         return 0;
529 }
530
531 static void azx_init_cmd_io(struct azx *chip)
532 {
533         spin_lock_irq(&chip->reg_lock);
534         /* CORB set up */
535         chip->corb.addr = chip->rb.addr;
536         chip->corb.buf = (u32 *)chip->rb.area;
537         azx_writel(chip, CORBLBASE, (u32)chip->corb.addr);
538         azx_writel(chip, CORBUBASE, upper_32_bits(chip->corb.addr));
539
540         /* set the corb size to 256 entries (ULI requires explicitly) */
541         azx_writeb(chip, CORBSIZE, 0x02);
542         /* set the corb write pointer to 0 */
543         azx_writew(chip, CORBWP, 0);
544         /* reset the corb hw read pointer */
545         azx_writew(chip, CORBRP, ICH6_CORBRP_RST);
546         /* enable corb dma */
547         azx_writeb(chip, CORBCTL, ICH6_CORBCTL_RUN);
548
549         /* RIRB set up */
550         chip->rirb.addr = chip->rb.addr + 2048;
551         chip->rirb.buf = (u32 *)(chip->rb.area + 2048);
552         chip->rirb.wp = chip->rirb.rp = 0;
553         memset(chip->rirb.cmds, 0, sizeof(chip->rirb.cmds));
554         azx_writel(chip, RIRBLBASE, (u32)chip->rirb.addr);
555         azx_writel(chip, RIRBUBASE, upper_32_bits(chip->rirb.addr));
556
557         /* set the rirb size to 256 entries (ULI requires explicitly) */
558         azx_writeb(chip, RIRBSIZE, 0x02);
559         /* reset the rirb hw write pointer */
560         azx_writew(chip, RIRBWP, ICH6_RIRBWP_RST);
561         /* set N=1, get RIRB response interrupt for new entry */
562         azx_writew(chip, RINTCNT, 1);
563         /* enable rirb dma and response irq */
564         azx_writeb(chip, RIRBCTL, ICH6_RBCTL_DMA_EN | ICH6_RBCTL_IRQ_EN);
565         spin_unlock_irq(&chip->reg_lock);
566 }
567
568 static void azx_free_cmd_io(struct azx *chip)
569 {
570         spin_lock_irq(&chip->reg_lock);
571         /* disable ringbuffer DMAs */
572         azx_writeb(chip, RIRBCTL, 0);
573         azx_writeb(chip, CORBCTL, 0);
574         spin_unlock_irq(&chip->reg_lock);
575 }
576
577 static unsigned int azx_command_addr(u32 cmd)
578 {
579         unsigned int addr = cmd >> 28;
580
581         if (addr >= AZX_MAX_CODECS) {
582                 snd_BUG();
583                 addr = 0;
584         }
585
586         return addr;
587 }
588
589 static unsigned int azx_response_addr(u32 res)
590 {
591         unsigned int addr = res & 0xf;
592
593         if (addr >= AZX_MAX_CODECS) {
594                 snd_BUG();
595                 addr = 0;
596         }
597
598         return addr;
599 }
600
601 /* send a command */
602 static int azx_corb_send_cmd(struct hda_bus *bus, u32 val)
603 {
604         struct azx *chip = bus->private_data;
605         unsigned int addr = azx_command_addr(val);
606         unsigned int wp;
607
608         spin_lock_irq(&chip->reg_lock);
609
610         /* add command to corb */
611         wp = azx_readb(chip, CORBWP);
612         wp++;
613         wp %= ICH6_MAX_CORB_ENTRIES;
614
615         chip->rirb.cmds[addr]++;
616         chip->corb.buf[wp] = cpu_to_le32(val);
617         azx_writel(chip, CORBWP, wp);
618
619         spin_unlock_irq(&chip->reg_lock);
620
621         return 0;
622 }
623
624 #define ICH6_RIRB_EX_UNSOL_EV   (1<<4)
625
626 /* retrieve RIRB entry - called from interrupt handler */
627 static void azx_update_rirb(struct azx *chip)
628 {
629         unsigned int rp, wp;
630         unsigned int addr;
631         u32 res, res_ex;
632
633         wp = azx_readb(chip, RIRBWP);
634         if (wp == chip->rirb.wp)
635                 return;
636         chip->rirb.wp = wp;
637
638         while (chip->rirb.rp != wp) {
639                 chip->rirb.rp++;
640                 chip->rirb.rp %= ICH6_MAX_RIRB_ENTRIES;
641
642                 rp = chip->rirb.rp << 1; /* an RIRB entry is 8-bytes */
643                 res_ex = le32_to_cpu(chip->rirb.buf[rp + 1]);
644                 res = le32_to_cpu(chip->rirb.buf[rp]);
645                 addr = azx_response_addr(res_ex);
646                 if (res_ex & ICH6_RIRB_EX_UNSOL_EV)
647                         snd_hda_queue_unsol_event(chip->bus, res, res_ex);
648                 else if (chip->rirb.cmds[addr]) {
649                         chip->rirb.res[addr] = res;
650                         smp_wmb();
651                         chip->rirb.cmds[addr]--;
652                 } else
653                         snd_printk(KERN_ERR SFX "spurious response %#x:%#x, "
654                                    "last cmd=%#08x\n",
655                                    res, res_ex,
656                                    chip->last_cmd[addr]);
657         }
658 }
659
660 /* receive a response */
661 static unsigned int azx_rirb_get_response(struct hda_bus *bus,
662                                           unsigned int addr)
663 {
664         struct azx *chip = bus->private_data;
665         unsigned long timeout;
666
667  again:
668         timeout = jiffies + msecs_to_jiffies(1000);
669         for (;;) {
670                 if (chip->polling_mode) {
671                         spin_lock_irq(&chip->reg_lock);
672                         azx_update_rirb(chip);
673                         spin_unlock_irq(&chip->reg_lock);
674                 }
675                 if (!chip->rirb.cmds[addr]) {
676                         smp_rmb();
677                         bus->rirb_error = 0;
678                         return chip->rirb.res[addr]; /* the last value */
679                 }
680                 if (time_after(jiffies, timeout))
681                         break;
682                 if (bus->needs_damn_long_delay)
683                         msleep(2); /* temporary workaround */
684                 else {
685                         udelay(10);
686                         cond_resched();
687                 }
688         }
689
690         if (!chip->polling_mode) {
691                 snd_printk(KERN_WARNING SFX "azx_get_response timeout, "
692                            "switching to polling mode: last cmd=0x%08x\n",
693                            chip->last_cmd[addr]);
694                 chip->polling_mode = 1;
695                 goto again;
696         }
697
698         if (chip->msi) {
699                 snd_printk(KERN_WARNING SFX "No response from codec, "
700                            "disabling MSI: last cmd=0x%08x\n",
701                            chip->last_cmd[addr]);
702                 free_irq(chip->irq, chip);
703                 chip->irq = -1;
704                 pci_disable_msi(chip->pci);
705                 chip->msi = 0;
706                 if (azx_acquire_irq(chip, 1) < 0) {
707                         bus->rirb_error = 1;
708                         return -1;
709                 }
710                 goto again;
711         }
712
713         if (chip->probing) {
714                 /* If this critical timeout happens during the codec probing
715                  * phase, this is likely an access to a non-existing codec
716                  * slot.  Better to return an error and reset the system.
717                  */
718                 return -1;
719         }
720
721         /* a fatal communication error; need either to reset or to fallback
722          * to the single_cmd mode
723          */
724         bus->rirb_error = 1;
725         if (bus->allow_bus_reset && !bus->response_reset && !bus->in_reset) {
726                 bus->response_reset = 1;
727                 return -1; /* give a chance to retry */
728         }
729
730         snd_printk(KERN_ERR "hda_intel: azx_get_response timeout, "
731                    "switching to single_cmd mode: last cmd=0x%08x\n",
732                    chip->last_cmd[addr]);
733         chip->single_cmd = 1;
734         bus->response_reset = 0;
735         /* release CORB/RIRB */
736         azx_free_cmd_io(chip);
737         /* disable unsolicited responses */
738         azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~ICH6_GCTL_UNSOL);
739         return -1;
740 }
741
742 /*
743  * Use the single immediate command instead of CORB/RIRB for simplicity
744  *
745  * Note: according to Intel, this is not preferred use.  The command was
746  *       intended for the BIOS only, and may get confused with unsolicited
747  *       responses.  So, we shouldn't use it for normal operation from the
748  *       driver.
749  *       I left the codes, however, for debugging/testing purposes.
750  */
751
752 /* receive a response */
753 static int azx_single_wait_for_response(struct azx *chip, unsigned int addr)
754 {
755         int timeout = 50;
756
757         while (timeout--) {
758                 /* check IRV busy bit */
759                 if (azx_readw(chip, IRS) & ICH6_IRS_VALID) {
760                         /* reuse rirb.res as the response return value */
761                         chip->rirb.res[addr] = azx_readl(chip, IR);
762                         return 0;
763                 }
764                 udelay(1);
765         }
766         if (printk_ratelimit())
767                 snd_printd(SFX "get_response timeout: IRS=0x%x\n",
768                            azx_readw(chip, IRS));
769         chip->rirb.res[addr] = -1;
770         return -EIO;
771 }
772
773 /* send a command */
774 static int azx_single_send_cmd(struct hda_bus *bus, u32 val)
775 {
776         struct azx *chip = bus->private_data;
777         unsigned int addr = azx_command_addr(val);
778         int timeout = 50;
779
780         bus->rirb_error = 0;
781         while (timeout--) {
782                 /* check ICB busy bit */
783                 if (!((azx_readw(chip, IRS) & ICH6_IRS_BUSY))) {
784                         /* Clear IRV valid bit */
785                         azx_writew(chip, IRS, azx_readw(chip, IRS) |
786                                    ICH6_IRS_VALID);
787                         azx_writel(chip, IC, val);
788                         azx_writew(chip, IRS, azx_readw(chip, IRS) |
789                                    ICH6_IRS_BUSY);
790                         return azx_single_wait_for_response(chip, addr);
791                 }
792                 udelay(1);
793         }
794         if (printk_ratelimit())
795                 snd_printd(SFX "send_cmd timeout: IRS=0x%x, val=0x%x\n",
796                            azx_readw(chip, IRS), val);
797         return -EIO;
798 }
799
800 /* receive a response */
801 static unsigned int azx_single_get_response(struct hda_bus *bus,
802                                             unsigned int addr)
803 {
804         struct azx *chip = bus->private_data;
805         return chip->rirb.res[addr];
806 }
807
808 /*
809  * The below are the main callbacks from hda_codec.
810  *
811  * They are just the skeleton to call sub-callbacks according to the
812  * current setting of chip->single_cmd.
813  */
814
815 /* send a command */
816 static int azx_send_cmd(struct hda_bus *bus, unsigned int val)
817 {
818         struct azx *chip = bus->private_data;
819
820         chip->last_cmd[azx_command_addr(val)] = val;
821         if (chip->single_cmd)
822                 return azx_single_send_cmd(bus, val);
823         else
824                 return azx_corb_send_cmd(bus, val);
825 }
826
827 /* get a response */
828 static unsigned int azx_get_response(struct hda_bus *bus,
829                                      unsigned int addr)
830 {
831         struct azx *chip = bus->private_data;
832         if (chip->single_cmd)
833                 return azx_single_get_response(bus, addr);
834         else
835                 return azx_rirb_get_response(bus, addr);
836 }
837
838 #ifdef CONFIG_SND_HDA_POWER_SAVE
839 static void azx_power_notify(struct hda_bus *bus);
840 #endif
841
842 /* reset codec link */
843 static int azx_reset(struct azx *chip)
844 {
845         int count;
846
847         /* clear STATESTS */
848         azx_writeb(chip, STATESTS, STATESTS_INT_MASK);
849
850         /* reset controller */
851         azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~ICH6_GCTL_RESET);
852
853         count = 50;
854         while (azx_readb(chip, GCTL) && --count)
855                 msleep(1);
856
857         /* delay for >= 100us for codec PLL to settle per spec
858          * Rev 0.9 section 5.5.1
859          */
860         msleep(1);
861
862         /* Bring controller out of reset */
863         azx_writeb(chip, GCTL, azx_readb(chip, GCTL) | ICH6_GCTL_RESET);
864
865         count = 50;
866         while (!azx_readb(chip, GCTL) && --count)
867                 msleep(1);
868
869         /* Brent Chartrand said to wait >= 540us for codecs to initialize */
870         msleep(1);
871
872         /* check to see if controller is ready */
873         if (!azx_readb(chip, GCTL)) {
874                 snd_printd(SFX "azx_reset: controller not ready!\n");
875                 return -EBUSY;
876         }
877
878         /* Accept unsolicited responses */
879         if (!chip->single_cmd)
880                 azx_writel(chip, GCTL, azx_readl(chip, GCTL) |
881                            ICH6_GCTL_UNSOL);
882
883         /* detect codecs */
884         if (!chip->codec_mask) {
885                 chip->codec_mask = azx_readw(chip, STATESTS);
886                 snd_printdd(SFX "codec_mask = 0x%x\n", chip->codec_mask);
887         }
888
889         return 0;
890 }
891
892
893 /*
894  * Lowlevel interface
895  */  
896
897 /* enable interrupts */
898 static void azx_int_enable(struct azx *chip)
899 {
900         /* enable controller CIE and GIE */
901         azx_writel(chip, INTCTL, azx_readl(chip, INTCTL) |
902                    ICH6_INT_CTRL_EN | ICH6_INT_GLOBAL_EN);
903 }
904
905 /* disable interrupts */
906 static void azx_int_disable(struct azx *chip)
907 {
908         int i;
909
910         /* disable interrupts in stream descriptor */
911         for (i = 0; i < chip->num_streams; i++) {
912                 struct azx_dev *azx_dev = &chip->azx_dev[i];
913                 azx_sd_writeb(azx_dev, SD_CTL,
914                               azx_sd_readb(azx_dev, SD_CTL) & ~SD_INT_MASK);
915         }
916
917         /* disable SIE for all streams */
918         azx_writeb(chip, INTCTL, 0);
919
920         /* disable controller CIE and GIE */
921         azx_writel(chip, INTCTL, azx_readl(chip, INTCTL) &
922                    ~(ICH6_INT_CTRL_EN | ICH6_INT_GLOBAL_EN));
923 }
924
925 /* clear interrupts */
926 static void azx_int_clear(struct azx *chip)
927 {
928         int i;
929
930         /* clear stream status */
931         for (i = 0; i < chip->num_streams; i++) {
932                 struct azx_dev *azx_dev = &chip->azx_dev[i];
933                 azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK);
934         }
935
936         /* clear STATESTS */
937         azx_writeb(chip, STATESTS, STATESTS_INT_MASK);
938
939         /* clear rirb status */
940         azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
941
942         /* clear int status */
943         azx_writel(chip, INTSTS, ICH6_INT_CTRL_EN | ICH6_INT_ALL_STREAM);
944 }
945
946 /* start a stream */
947 static void azx_stream_start(struct azx *chip, struct azx_dev *azx_dev)
948 {
949         /*
950          * Before stream start, initialize parameter
951          */
952         azx_dev->insufficient = 1;
953
954         /* enable SIE */
955         azx_writel(chip, INTCTL,
956                    azx_readl(chip, INTCTL) | (1 << azx_dev->index));
957         /* set DMA start and interrupt mask */
958         azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) |
959                       SD_CTL_DMA_START | SD_INT_MASK);
960 }
961
962 /* stop DMA */
963 static void azx_stream_clear(struct azx *chip, struct azx_dev *azx_dev)
964 {
965         azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) &
966                       ~(SD_CTL_DMA_START | SD_INT_MASK));
967         azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK); /* to be sure */
968 }
969
970 /* stop a stream */
971 static void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev)
972 {
973         azx_stream_clear(chip, azx_dev);
974         /* disable SIE */
975         azx_writel(chip, INTCTL,
976                    azx_readl(chip, INTCTL) & ~(1 << azx_dev->index));
977 }
978
979
980 /*
981  * reset and start the controller registers
982  */
983 static void azx_init_chip(struct azx *chip)
984 {
985         if (chip->initialized)
986                 return;
987
988         /* reset controller */
989         azx_reset(chip);
990
991         /* initialize interrupts */
992         azx_int_clear(chip);
993         azx_int_enable(chip);
994
995         /* initialize the codec command I/O */
996         if (!chip->single_cmd)
997                 azx_init_cmd_io(chip);
998
999         /* program the position buffer */
1000         azx_writel(chip, DPLBASE, (u32)chip->posbuf.addr);
1001         azx_writel(chip, DPUBASE, upper_32_bits(chip->posbuf.addr));
1002
1003         chip->initialized = 1;
1004 }
1005
1006 /*
1007  * initialize the PCI registers
1008  */
1009 /* update bits in a PCI register byte */
1010 static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
1011                             unsigned char mask, unsigned char val)
1012 {
1013         unsigned char data;
1014
1015         pci_read_config_byte(pci, reg, &data);
1016         data &= ~mask;
1017         data |= (val & mask);
1018         pci_write_config_byte(pci, reg, data);
1019 }
1020
1021 static void azx_init_pci(struct azx *chip)
1022 {
1023         unsigned short snoop;
1024
1025         /* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
1026          * TCSEL == Traffic Class Select Register, which sets PCI express QOS
1027          * Ensuring these bits are 0 clears playback static on some HD Audio
1028          * codecs
1029          */
1030         update_pci_byte(chip->pci, ICH6_PCIREG_TCSEL, 0x07, 0);
1031
1032         switch (chip->driver_type) {
1033         case AZX_DRIVER_ATI:
1034                 /* For ATI SB450 azalia HD audio, we need to enable snoop */
1035                 update_pci_byte(chip->pci,
1036                                 ATI_SB450_HDAUDIO_MISC_CNTR2_ADDR, 
1037                                 0x07, ATI_SB450_HDAUDIO_ENABLE_SNOOP);
1038                 break;
1039         case AZX_DRIVER_NVIDIA:
1040                 /* For NVIDIA HDA, enable snoop */
1041                 update_pci_byte(chip->pci,
1042                                 NVIDIA_HDA_TRANSREG_ADDR,
1043                                 0x0f, NVIDIA_HDA_ENABLE_COHBITS);
1044                 update_pci_byte(chip->pci,
1045                                 NVIDIA_HDA_ISTRM_COH,
1046                                 0x01, NVIDIA_HDA_ENABLE_COHBIT);
1047                 update_pci_byte(chip->pci,
1048                                 NVIDIA_HDA_OSTRM_COH,
1049                                 0x01, NVIDIA_HDA_ENABLE_COHBIT);
1050                 break;
1051         case AZX_DRIVER_SCH:
1052                 pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
1053                 if (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) {
1054                         pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC,
1055                                 snoop & (~INTEL_SCH_HDA_DEVC_NOSNOOP));
1056                         pci_read_config_word(chip->pci,
1057                                 INTEL_SCH_HDA_DEVC, &snoop);
1058                         snd_printdd(SFX "HDA snoop disabled, enabling ... %s\n",
1059                                 (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)
1060                                 ? "Failed" : "OK");
1061                 }
1062                 break;
1063
1064         }
1065 }
1066
1067
1068 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
1069
1070 /*
1071  * interrupt handler
1072  */
1073 static irqreturn_t azx_interrupt(int irq, void *dev_id)
1074 {
1075         struct azx *chip = dev_id;
1076         struct azx_dev *azx_dev;
1077         u32 status;
1078         int i, ok;
1079
1080         spin_lock(&chip->reg_lock);
1081
1082         status = azx_readl(chip, INTSTS);
1083         if (status == 0) {
1084                 spin_unlock(&chip->reg_lock);
1085                 return IRQ_NONE;
1086         }
1087         
1088         for (i = 0; i < chip->num_streams; i++) {
1089                 azx_dev = &chip->azx_dev[i];
1090                 if (status & azx_dev->sd_int_sta_mask) {
1091                         azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK);
1092                         if (!azx_dev->substream || !azx_dev->running)
1093                                 continue;
1094                         /* check whether this IRQ is really acceptable */
1095                         ok = azx_position_ok(chip, azx_dev);
1096                         if (ok == 1) {
1097                                 azx_dev->irq_pending = 0;
1098                                 spin_unlock(&chip->reg_lock);
1099                                 snd_pcm_period_elapsed(azx_dev->substream);
1100                                 spin_lock(&chip->reg_lock);
1101                         } else if (ok == 0 && chip->bus && chip->bus->workq) {
1102                                 /* bogus IRQ, process it later */
1103                                 azx_dev->irq_pending = 1;
1104                                 queue_work(chip->bus->workq,
1105                                            &chip->irq_pending_work);
1106                         }
1107                 }
1108         }
1109
1110         /* clear rirb int */
1111         status = azx_readb(chip, RIRBSTS);
1112         if (status & RIRB_INT_MASK) {
1113                 if (status & RIRB_INT_RESPONSE)
1114                         azx_update_rirb(chip);
1115                 azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
1116         }
1117
1118 #if 0
1119         /* clear state status int */
1120         if (azx_readb(chip, STATESTS) & 0x04)
1121                 azx_writeb(chip, STATESTS, 0x04);
1122 #endif
1123         spin_unlock(&chip->reg_lock);
1124         
1125         return IRQ_HANDLED;
1126 }
1127
1128
1129 /*
1130  * set up a BDL entry
1131  */
1132 static int setup_bdle(struct snd_pcm_substream *substream,
1133                       struct azx_dev *azx_dev, u32 **bdlp,
1134                       int ofs, int size, int with_ioc)
1135 {
1136         u32 *bdl = *bdlp;
1137
1138         while (size > 0) {
1139                 dma_addr_t addr;
1140                 int chunk;
1141
1142                 if (azx_dev->frags >= AZX_MAX_BDL_ENTRIES)
1143                         return -EINVAL;
1144
1145                 addr = snd_pcm_sgbuf_get_addr(substream, ofs);
1146                 /* program the address field of the BDL entry */
1147                 bdl[0] = cpu_to_le32((u32)addr);
1148                 bdl[1] = cpu_to_le32(upper_32_bits(addr));
1149                 /* program the size field of the BDL entry */
1150                 chunk = snd_pcm_sgbuf_get_chunk_size(substream, ofs, size);
1151                 bdl[2] = cpu_to_le32(chunk);
1152                 /* program the IOC to enable interrupt
1153                  * only when the whole fragment is processed
1154                  */
1155                 size -= chunk;
1156                 bdl[3] = (size || !with_ioc) ? 0 : cpu_to_le32(0x01);
1157                 bdl += 4;
1158                 azx_dev->frags++;
1159                 ofs += chunk;
1160         }
1161         *bdlp = bdl;
1162         return ofs;
1163 }
1164
1165 /*
1166  * set up BDL entries
1167  */
1168 static int azx_setup_periods(struct azx *chip,
1169                              struct snd_pcm_substream *substream,
1170                              struct azx_dev *azx_dev)
1171 {
1172         u32 *bdl;
1173         int i, ofs, periods, period_bytes;
1174         int pos_adj;
1175
1176         /* reset BDL address */
1177         azx_sd_writel(azx_dev, SD_BDLPL, 0);
1178         azx_sd_writel(azx_dev, SD_BDLPU, 0);
1179
1180         period_bytes = azx_dev->period_bytes;
1181         periods = azx_dev->bufsize / period_bytes;
1182
1183         /* program the initial BDL entries */
1184         bdl = (u32 *)azx_dev->bdl.area;
1185         ofs = 0;
1186         azx_dev->frags = 0;
1187         pos_adj = bdl_pos_adj[chip->dev_index];
1188         if (pos_adj > 0) {
1189                 struct snd_pcm_runtime *runtime = substream->runtime;
1190                 int pos_align = pos_adj;
1191                 pos_adj = (pos_adj * runtime->rate + 47999) / 48000;
1192                 if (!pos_adj)
1193                         pos_adj = pos_align;
1194                 else
1195                         pos_adj = ((pos_adj + pos_align - 1) / pos_align) *
1196                                 pos_align;
1197                 pos_adj = frames_to_bytes(runtime, pos_adj);
1198                 if (pos_adj >= period_bytes) {
1199                         snd_printk(KERN_WARNING SFX "Too big adjustment %d\n",
1200                                    bdl_pos_adj[chip->dev_index]);
1201                         pos_adj = 0;
1202                 } else {
1203                         ofs = setup_bdle(substream, azx_dev,
1204                                          &bdl, ofs, pos_adj, 1);
1205                         if (ofs < 0)
1206                                 goto error;
1207                 }
1208         } else
1209                 pos_adj = 0;
1210         for (i = 0; i < periods; i++) {
1211                 if (i == periods - 1 && pos_adj)
1212                         ofs = setup_bdle(substream, azx_dev, &bdl, ofs,
1213                                          period_bytes - pos_adj, 0);
1214                 else
1215                         ofs = setup_bdle(substream, azx_dev, &bdl, ofs,
1216                                          period_bytes, 1);
1217                 if (ofs < 0)
1218                         goto error;
1219         }
1220         return 0;
1221
1222  error:
1223         snd_printk(KERN_ERR SFX "Too many BDL entries: buffer=%d, period=%d\n",
1224                    azx_dev->bufsize, period_bytes);
1225         return -EINVAL;
1226 }
1227
1228 /* reset stream */
1229 static void azx_stream_reset(struct azx *chip, struct azx_dev *azx_dev)
1230 {
1231         unsigned char val;
1232         int timeout;
1233
1234         azx_stream_clear(chip, azx_dev);
1235
1236         azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) |
1237                       SD_CTL_STREAM_RESET);
1238         udelay(3);
1239         timeout = 300;
1240         while (!((val = azx_sd_readb(azx_dev, SD_CTL)) & SD_CTL_STREAM_RESET) &&
1241                --timeout)
1242                 ;
1243         val &= ~SD_CTL_STREAM_RESET;
1244         azx_sd_writeb(azx_dev, SD_CTL, val);
1245         udelay(3);
1246
1247         timeout = 300;
1248         /* waiting for hardware to report that the stream is out of reset */
1249         while (((val = azx_sd_readb(azx_dev, SD_CTL)) & SD_CTL_STREAM_RESET) &&
1250                --timeout)
1251                 ;
1252
1253         /* reset first position - may not be synced with hw at this time */
1254         *azx_dev->posbuf = 0;
1255 }
1256
1257 /*
1258  * set up the SD for streaming
1259  */
1260 static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev)
1261 {
1262         /* make sure the run bit is zero for SD */
1263         azx_stream_clear(chip, azx_dev);
1264         /* program the stream_tag */
1265         azx_sd_writel(azx_dev, SD_CTL,
1266                       (azx_sd_readl(azx_dev, SD_CTL) & ~SD_CTL_STREAM_TAG_MASK)|
1267                       (azx_dev->stream_tag << SD_CTL_STREAM_TAG_SHIFT));
1268
1269         /* program the length of samples in cyclic buffer */
1270         azx_sd_writel(azx_dev, SD_CBL, azx_dev->bufsize);
1271
1272         /* program the stream format */
1273         /* this value needs to be the same as the one programmed */
1274         azx_sd_writew(azx_dev, SD_FORMAT, azx_dev->format_val);
1275
1276         /* program the stream LVI (last valid index) of the BDL */
1277         azx_sd_writew(azx_dev, SD_LVI, azx_dev->frags - 1);
1278
1279         /* program the BDL address */
1280         /* lower BDL address */
1281         azx_sd_writel(azx_dev, SD_BDLPL, (u32)azx_dev->bdl.addr);
1282         /* upper BDL address */
1283         azx_sd_writel(azx_dev, SD_BDLPU, upper_32_bits(azx_dev->bdl.addr));
1284
1285         /* enable the position buffer */
1286         if (chip->position_fix == POS_FIX_POSBUF ||
1287             chip->position_fix == POS_FIX_AUTO ||
1288             chip->via_dmapos_patch) {
1289                 if (!(azx_readl(chip, DPLBASE) & ICH6_DPLBASE_ENABLE))
1290                         azx_writel(chip, DPLBASE,
1291                                 (u32)chip->posbuf.addr | ICH6_DPLBASE_ENABLE);
1292         }
1293
1294         /* set the interrupt enable bits in the descriptor control register */
1295         azx_sd_writel(azx_dev, SD_CTL,
1296                       azx_sd_readl(azx_dev, SD_CTL) | SD_INT_MASK);
1297
1298         return 0;
1299 }
1300
1301 /*
1302  * Probe the given codec address
1303  */
1304 static int probe_codec(struct azx *chip, int addr)
1305 {
1306         unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) |
1307                 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
1308         unsigned int res;
1309
1310         mutex_lock(&chip->bus->cmd_mutex);
1311         chip->probing = 1;
1312         azx_send_cmd(chip->bus, cmd);
1313         res = azx_get_response(chip->bus, addr);
1314         chip->probing = 0;
1315         mutex_unlock(&chip->bus->cmd_mutex);
1316         if (res == -1)
1317                 return -EIO;
1318         snd_printdd(SFX "codec #%d probed OK\n", addr);
1319         return 0;
1320 }
1321
1322 static int azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec,
1323                                  struct hda_pcm *cpcm);
1324 static void azx_stop_chip(struct azx *chip);
1325
1326 static void azx_bus_reset(struct hda_bus *bus)
1327 {
1328         struct azx *chip = bus->private_data;
1329
1330         bus->in_reset = 1;
1331         azx_stop_chip(chip);
1332         azx_init_chip(chip);
1333 #ifdef CONFIG_PM
1334         if (chip->initialized) {
1335                 int i;
1336
1337                 for (i = 0; i < HDA_MAX_PCMS; i++)
1338                         snd_pcm_suspend_all(chip->pcm[i]);
1339                 snd_hda_suspend(chip->bus);
1340                 snd_hda_resume(chip->bus);
1341         }
1342 #endif
1343         bus->in_reset = 0;
1344 }
1345
1346 /*
1347  * Codec initialization
1348  */
1349
1350 /* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
1351 static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] __devinitdata = {
1352         [AZX_DRIVER_TERA] = 1,
1353 };
1354
1355 static int __devinit azx_codec_create(struct azx *chip, const char *model)
1356 {
1357         struct hda_bus_template bus_temp;
1358         int c, codecs, err;
1359         int max_slots;
1360
1361         memset(&bus_temp, 0, sizeof(bus_temp));
1362         bus_temp.private_data = chip;
1363         bus_temp.modelname = model;
1364         bus_temp.pci = chip->pci;
1365         bus_temp.ops.command = azx_send_cmd;
1366         bus_temp.ops.get_response = azx_get_response;
1367         bus_temp.ops.attach_pcm = azx_attach_pcm_stream;
1368         bus_temp.ops.bus_reset = azx_bus_reset;
1369 #ifdef CONFIG_SND_HDA_POWER_SAVE
1370         bus_temp.power_save = &power_save;
1371         bus_temp.ops.pm_notify = azx_power_notify;
1372 #endif
1373
1374         err = snd_hda_bus_new(chip->card, &bus_temp, &chip->bus);
1375         if (err < 0)
1376                 return err;
1377
1378         if (chip->driver_type == AZX_DRIVER_NVIDIA)
1379                 chip->bus->needs_damn_long_delay = 1;
1380
1381         codecs = 0;
1382         max_slots = azx_max_codecs[chip->driver_type];
1383         if (!max_slots)
1384                 max_slots = AZX_MAX_CODECS;
1385
1386         /* First try to probe all given codec slots */
1387         for (c = 0; c < max_slots; c++) {
1388                 if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
1389                         if (probe_codec(chip, c) < 0) {
1390                                 /* Some BIOSen give you wrong codec addresses
1391                                  * that don't exist
1392                                  */
1393                                 snd_printk(KERN_WARNING SFX
1394                                            "Codec #%d probe error; "
1395                                            "disabling it...\n", c);
1396                                 chip->codec_mask &= ~(1 << c);
1397                                 /* More badly, accessing to a non-existing
1398                                  * codec often screws up the controller chip,
1399                                  * and distrubs the further communications.
1400                                  * Thus if an error occurs during probing,
1401                                  * better to reset the controller chip to
1402                                  * get back to the sanity state.
1403                                  */
1404                                 azx_stop_chip(chip);
1405                                 azx_init_chip(chip);
1406                         }
1407                 }
1408         }
1409
1410         /* Then create codec instances */
1411         for (c = 0; c < max_slots; c++) {
1412                 if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
1413                         struct hda_codec *codec;
1414                         err = snd_hda_codec_new(chip->bus, c, &codec);
1415                         if (err < 0)
1416                                 continue;
1417                         codec->beep_mode = chip->beep_mode;
1418                         codecs++;
1419                 }
1420         }
1421         if (!codecs) {
1422                 snd_printk(KERN_ERR SFX "no codecs initialized\n");
1423                 return -ENXIO;
1424         }
1425         return 0;
1426 }
1427
1428 /* configure each codec instance */
1429 static int __devinit azx_codec_configure(struct azx *chip)
1430 {
1431         struct hda_codec *codec;
1432         list_for_each_entry(codec, &chip->bus->codec_list, list) {
1433                 snd_hda_codec_configure(codec);
1434         }
1435         return 0;
1436 }
1437
1438
1439 /*
1440  * PCM support
1441  */
1442
1443 /* assign a stream for the PCM */
1444 static inline struct azx_dev *
1445 azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream)
1446 {
1447         int dev, i, nums;
1448         struct azx_dev *res = NULL;
1449
1450         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
1451                 dev = chip->playback_index_offset;
1452                 nums = chip->playback_streams;
1453         } else {
1454                 dev = chip->capture_index_offset;
1455                 nums = chip->capture_streams;
1456         }
1457         for (i = 0; i < nums; i++, dev++)
1458                 if (!chip->azx_dev[dev].opened) {
1459                         res = &chip->azx_dev[dev];
1460                         if (res->device == substream->pcm->device)
1461                                 break;
1462                 }
1463         if (res) {
1464                 res->opened = 1;
1465                 res->device = substream->pcm->device;
1466         }
1467         return res;
1468 }
1469
1470 /* release the assigned stream */
1471 static inline void azx_release_device(struct azx_dev *azx_dev)
1472 {
1473         azx_dev->opened = 0;
1474 }
1475
1476 static struct snd_pcm_hardware azx_pcm_hw = {
1477         .info =                 (SNDRV_PCM_INFO_MMAP |
1478                                  SNDRV_PCM_INFO_INTERLEAVED |
1479                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1480                                  SNDRV_PCM_INFO_MMAP_VALID |
1481                                  /* No full-resume yet implemented */
1482                                  /* SNDRV_PCM_INFO_RESUME |*/
1483                                  SNDRV_PCM_INFO_PAUSE |
1484                                  SNDRV_PCM_INFO_SYNC_START),
1485         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
1486         .rates =                SNDRV_PCM_RATE_48000,
1487         .rate_min =             48000,
1488         .rate_max =             48000,
1489         .channels_min =         2,
1490         .channels_max =         2,
1491         .buffer_bytes_max =     AZX_MAX_BUF_SIZE,
1492         .period_bytes_min =     128,
1493         .period_bytes_max =     AZX_MAX_BUF_SIZE / 2,
1494         .periods_min =          2,
1495         .periods_max =          AZX_MAX_FRAG,
1496         .fifo_size =            0,
1497 };
1498
1499 struct azx_pcm {
1500         struct azx *chip;
1501         struct hda_codec *codec;
1502         struct hda_pcm_stream *hinfo[2];
1503 };
1504
1505 static int azx_pcm_open(struct snd_pcm_substream *substream)
1506 {
1507         struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1508         struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
1509         struct azx *chip = apcm->chip;
1510         struct azx_dev *azx_dev;
1511         struct snd_pcm_runtime *runtime = substream->runtime;
1512         unsigned long flags;
1513         int err;
1514
1515         mutex_lock(&chip->open_mutex);
1516         azx_dev = azx_assign_device(chip, substream);
1517         if (azx_dev == NULL) {
1518                 mutex_unlock(&chip->open_mutex);
1519                 return -EBUSY;
1520         }
1521         runtime->hw = azx_pcm_hw;
1522         runtime->hw.channels_min = hinfo->channels_min;
1523         runtime->hw.channels_max = hinfo->channels_max;
1524         runtime->hw.formats = hinfo->formats;
1525         runtime->hw.rates = hinfo->rates;
1526         snd_pcm_limit_hw_rates(runtime);
1527         snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
1528         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1529                                    128);
1530         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1531                                    128);
1532         snd_hda_power_up(apcm->codec);
1533         err = hinfo->ops.open(hinfo, apcm->codec, substream);
1534         if (err < 0) {
1535                 azx_release_device(azx_dev);
1536                 snd_hda_power_down(apcm->codec);
1537                 mutex_unlock(&chip->open_mutex);
1538                 return err;
1539         }
1540         snd_pcm_limit_hw_rates(runtime);
1541         /* sanity check */
1542         if (snd_BUG_ON(!runtime->hw.channels_min) ||
1543             snd_BUG_ON(!runtime->hw.channels_max) ||
1544             snd_BUG_ON(!runtime->hw.formats) ||
1545             snd_BUG_ON(!runtime->hw.rates)) {
1546                 azx_release_device(azx_dev);
1547                 hinfo->ops.close(hinfo, apcm->codec, substream);
1548                 snd_hda_power_down(apcm->codec);
1549                 mutex_unlock(&chip->open_mutex);
1550                 return -EINVAL;
1551         }
1552         spin_lock_irqsave(&chip->reg_lock, flags);
1553         azx_dev->substream = substream;
1554         azx_dev->running = 0;
1555         spin_unlock_irqrestore(&chip->reg_lock, flags);
1556
1557         runtime->private_data = azx_dev;
1558         snd_pcm_set_sync(substream);
1559         mutex_unlock(&chip->open_mutex);
1560         return 0;
1561 }
1562
1563 static int azx_pcm_close(struct snd_pcm_substream *substream)
1564 {
1565         struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1566         struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
1567         struct azx *chip = apcm->chip;
1568         struct azx_dev *azx_dev = get_azx_dev(substream);
1569         unsigned long flags;
1570
1571         mutex_lock(&chip->open_mutex);
1572         spin_lock_irqsave(&chip->reg_lock, flags);
1573         azx_dev->substream = NULL;
1574         azx_dev->running = 0;
1575         spin_unlock_irqrestore(&chip->reg_lock, flags);
1576         azx_release_device(azx_dev);
1577         hinfo->ops.close(hinfo, apcm->codec, substream);
1578         snd_hda_power_down(apcm->codec);
1579         mutex_unlock(&chip->open_mutex);
1580         return 0;
1581 }
1582
1583 static int azx_pcm_hw_params(struct snd_pcm_substream *substream,
1584                              struct snd_pcm_hw_params *hw_params)
1585 {
1586         struct azx_dev *azx_dev = get_azx_dev(substream);
1587
1588         azx_dev->bufsize = 0;
1589         azx_dev->period_bytes = 0;
1590         azx_dev->format_val = 0;
1591         return snd_pcm_lib_malloc_pages(substream,
1592                                         params_buffer_bytes(hw_params));
1593 }
1594
1595 static int azx_pcm_hw_free(struct snd_pcm_substream *substream)
1596 {
1597         struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1598         struct azx_dev *azx_dev = get_azx_dev(substream);
1599         struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
1600
1601         /* reset BDL address */
1602         azx_sd_writel(azx_dev, SD_BDLPL, 0);
1603         azx_sd_writel(azx_dev, SD_BDLPU, 0);
1604         azx_sd_writel(azx_dev, SD_CTL, 0);
1605         azx_dev->bufsize = 0;
1606         azx_dev->period_bytes = 0;
1607         azx_dev->format_val = 0;
1608
1609         hinfo->ops.cleanup(hinfo, apcm->codec, substream);
1610
1611         return snd_pcm_lib_free_pages(substream);
1612 }
1613
1614 static int azx_pcm_prepare(struct snd_pcm_substream *substream)
1615 {
1616         struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1617         struct azx *chip = apcm->chip;
1618         struct azx_dev *azx_dev = get_azx_dev(substream);
1619         struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
1620         struct snd_pcm_runtime *runtime = substream->runtime;
1621         unsigned int bufsize, period_bytes, format_val;
1622         int err;
1623
1624         azx_stream_reset(chip, azx_dev);
1625         format_val = snd_hda_calc_stream_format(runtime->rate,
1626                                                 runtime->channels,
1627                                                 runtime->format,
1628                                                 hinfo->maxbps);
1629         if (!format_val) {
1630                 snd_printk(KERN_ERR SFX
1631                            "invalid format_val, rate=%d, ch=%d, format=%d\n",
1632                            runtime->rate, runtime->channels, runtime->format);
1633                 return -EINVAL;
1634         }
1635
1636         bufsize = snd_pcm_lib_buffer_bytes(substream);
1637         period_bytes = snd_pcm_lib_period_bytes(substream);
1638
1639         snd_printdd(SFX "azx_pcm_prepare: bufsize=0x%x, format=0x%x\n",
1640                     bufsize, format_val);
1641
1642         if (bufsize != azx_dev->bufsize ||
1643             period_bytes != azx_dev->period_bytes ||
1644             format_val != azx_dev->format_val) {
1645                 azx_dev->bufsize = bufsize;
1646                 azx_dev->period_bytes = period_bytes;
1647                 azx_dev->format_val = format_val;
1648                 err = azx_setup_periods(chip, substream, azx_dev);
1649                 if (err < 0)
1650                         return err;
1651         }
1652
1653         azx_dev->min_jiffies = (runtime->period_size * HZ) /
1654                                                 (runtime->rate * 2);
1655         azx_setup_controller(chip, azx_dev);
1656         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1657                 azx_dev->fifo_size = azx_sd_readw(azx_dev, SD_FIFOSIZE) + 1;
1658         else
1659                 azx_dev->fifo_size = 0;
1660
1661         return hinfo->ops.prepare(hinfo, apcm->codec, azx_dev->stream_tag,
1662                                   azx_dev->format_val, substream);
1663 }
1664
1665 static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1666 {
1667         struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1668         struct azx *chip = apcm->chip;
1669         struct azx_dev *azx_dev;
1670         struct snd_pcm_substream *s;
1671         int rstart = 0, start, nsync = 0, sbits = 0;
1672         int nwait, timeout;
1673
1674         switch (cmd) {
1675         case SNDRV_PCM_TRIGGER_START:
1676                 rstart = 1;
1677         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1678         case SNDRV_PCM_TRIGGER_RESUME:
1679                 start = 1;
1680                 break;
1681         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1682         case SNDRV_PCM_TRIGGER_SUSPEND:
1683         case SNDRV_PCM_TRIGGER_STOP:
1684                 start = 0;
1685                 break;
1686         default:
1687                 return -EINVAL;
1688         }
1689
1690         snd_pcm_group_for_each_entry(s, substream) {
1691                 if (s->pcm->card != substream->pcm->card)
1692                         continue;
1693                 azx_dev = get_azx_dev(s);
1694                 sbits |= 1 << azx_dev->index;
1695                 nsync++;
1696                 snd_pcm_trigger_done(s, substream);
1697         }
1698
1699         spin_lock(&chip->reg_lock);
1700         if (nsync > 1) {
1701                 /* first, set SYNC bits of corresponding streams */
1702                 azx_writel(chip, SYNC, azx_readl(chip, SYNC) | sbits);
1703         }
1704         snd_pcm_group_for_each_entry(s, substream) {
1705                 if (s->pcm->card != substream->pcm->card)
1706                         continue;
1707                 azx_dev = get_azx_dev(s);
1708                 if (rstart) {
1709                         azx_dev->start_flag = 1;
1710                         azx_dev->start_jiffies = jiffies + azx_dev->min_jiffies;
1711                 }
1712                 if (start)
1713                         azx_stream_start(chip, azx_dev);
1714                 else
1715                         azx_stream_stop(chip, azx_dev);
1716                 azx_dev->running = start;
1717         }
1718         spin_unlock(&chip->reg_lock);
1719         if (start) {
1720                 if (nsync == 1)
1721                         return 0;
1722                 /* wait until all FIFOs get ready */
1723                 for (timeout = 5000; timeout; timeout--) {
1724                         nwait = 0;
1725                         snd_pcm_group_for_each_entry(s, substream) {
1726                                 if (s->pcm->card != substream->pcm->card)
1727                                         continue;
1728                                 azx_dev = get_azx_dev(s);
1729                                 if (!(azx_sd_readb(azx_dev, SD_STS) &
1730                                       SD_STS_FIFO_READY))
1731                                         nwait++;
1732                         }
1733                         if (!nwait)
1734                                 break;
1735                         cpu_relax();
1736                 }
1737         } else {
1738                 /* wait until all RUN bits are cleared */
1739                 for (timeout = 5000; timeout; timeout--) {
1740                         nwait = 0;
1741                         snd_pcm_group_for_each_entry(s, substream) {
1742                                 if (s->pcm->card != substream->pcm->card)
1743                                         continue;
1744                                 azx_dev = get_azx_dev(s);
1745                                 if (azx_sd_readb(azx_dev, SD_CTL) &
1746                                     SD_CTL_DMA_START)
1747                                         nwait++;
1748                         }
1749                         if (!nwait)
1750                                 break;
1751                         cpu_relax();
1752                 }
1753         }
1754         if (nsync > 1) {
1755                 spin_lock(&chip->reg_lock);
1756                 /* reset SYNC bits */
1757                 azx_writel(chip, SYNC, azx_readl(chip, SYNC) & ~sbits);
1758                 spin_unlock(&chip->reg_lock);
1759         }
1760         return 0;
1761 }
1762
1763 /* get the current DMA position with correction on VIA chips */
1764 static unsigned int azx_via_get_position(struct azx *chip,
1765                                          struct azx_dev *azx_dev)
1766 {
1767         unsigned int link_pos, mini_pos, bound_pos;
1768         unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
1769         unsigned int fifo_size;
1770
1771         link_pos = azx_sd_readl(azx_dev, SD_LPIB);
1772         if (azx_dev->index >= 4) {
1773                 /* Playback, no problem using link position */
1774                 return link_pos;
1775         }
1776
1777         /* Capture */
1778         /* For new chipset,
1779          * use mod to get the DMA position just like old chipset
1780          */
1781         mod_dma_pos = le32_to_cpu(*azx_dev->posbuf);
1782         mod_dma_pos %= azx_dev->period_bytes;
1783
1784         /* azx_dev->fifo_size can't get FIFO size of in stream.
1785          * Get from base address + offset.
1786          */
1787         fifo_size = readw(chip->remap_addr + VIA_IN_STREAM0_FIFO_SIZE_OFFSET);
1788
1789         if (azx_dev->insufficient) {
1790                 /* Link position never gather than FIFO size */
1791                 if (link_pos <= fifo_size)
1792                         return 0;
1793
1794                 azx_dev->insufficient = 0;
1795         }
1796
1797         if (link_pos <= fifo_size)
1798                 mini_pos = azx_dev->bufsize + link_pos - fifo_size;
1799         else
1800                 mini_pos = link_pos - fifo_size;
1801
1802         /* Find nearest previous boudary */
1803         mod_mini_pos = mini_pos % azx_dev->period_bytes;
1804         mod_link_pos = link_pos % azx_dev->period_bytes;
1805         if (mod_link_pos >= fifo_size)
1806                 bound_pos = link_pos - mod_link_pos;
1807         else if (mod_dma_pos >= mod_mini_pos)
1808                 bound_pos = mini_pos - mod_mini_pos;
1809         else {
1810                 bound_pos = mini_pos - mod_mini_pos + azx_dev->period_bytes;
1811                 if (bound_pos >= azx_dev->bufsize)
1812                         bound_pos = 0;
1813         }
1814
1815         /* Calculate real DMA position we want */
1816         return bound_pos + mod_dma_pos;
1817 }
1818
1819 static unsigned int azx_get_position(struct azx *chip,
1820                                      struct azx_dev *azx_dev)
1821 {
1822         unsigned int pos;
1823
1824         if (chip->via_dmapos_patch)
1825                 pos = azx_via_get_position(chip, azx_dev);
1826         else if (chip->position_fix == POS_FIX_POSBUF ||
1827                  chip->position_fix == POS_FIX_AUTO) {
1828                 /* use the position buffer */
1829                 pos = le32_to_cpu(*azx_dev->posbuf);
1830         } else {
1831                 /* read LPIB */
1832                 pos = azx_sd_readl(azx_dev, SD_LPIB);
1833         }
1834         if (pos >= azx_dev->bufsize)
1835                 pos = 0;
1836         return pos;
1837 }
1838
1839 static snd_pcm_uframes_t azx_pcm_pointer(struct snd_pcm_substream *substream)
1840 {
1841         struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
1842         struct azx *chip = apcm->chip;
1843         struct azx_dev *azx_dev = get_azx_dev(substream);
1844         return bytes_to_frames(substream->runtime,
1845                                azx_get_position(chip, azx_dev));
1846 }
1847
1848 /*
1849  * Check whether the current DMA position is acceptable for updating
1850  * periods.  Returns non-zero if it's OK.
1851  *
1852  * Many HD-audio controllers appear pretty inaccurate about
1853  * the update-IRQ timing.  The IRQ is issued before actually the
1854  * data is processed.  So, we need to process it afterwords in a
1855  * workqueue.
1856  */
1857 static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
1858 {
1859         unsigned int pos;
1860
1861         if (azx_dev->start_flag &&
1862             time_before_eq(jiffies, azx_dev->start_jiffies))
1863                 return -1;      /* bogus (too early) interrupt */
1864         azx_dev->start_flag = 0;
1865
1866         pos = azx_get_position(chip, azx_dev);
1867         if (chip->position_fix == POS_FIX_AUTO) {
1868                 if (!pos) {
1869                         printk(KERN_WARNING
1870                                "hda-intel: Invalid position buffer, "
1871                                "using LPIB read method instead.\n");
1872                         chip->position_fix = POS_FIX_LPIB;
1873                         pos = azx_get_position(chip, azx_dev);
1874                 } else
1875                         chip->position_fix = POS_FIX_POSBUF;
1876         }
1877
1878         if (!bdl_pos_adj[chip->dev_index])
1879                 return 1; /* no delayed ack */
1880         if (pos % azx_dev->period_bytes > azx_dev->period_bytes / 2)
1881                 return 0; /* NG - it's below the period boundary */
1882         return 1; /* OK, it's fine */
1883 }
1884
1885 /*
1886  * The work for pending PCM period updates.
1887  */
1888 static void azx_irq_pending_work(struct work_struct *work)
1889 {
1890         struct azx *chip = container_of(work, struct azx, irq_pending_work);
1891         int i, pending;
1892
1893         if (!chip->irq_pending_warned) {
1894                 printk(KERN_WARNING
1895                        "hda-intel: IRQ timing workaround is activated "
1896                        "for card #%d. Suggest a bigger bdl_pos_adj.\n",
1897                        chip->card->number);
1898                 chip->irq_pending_warned = 1;
1899         }
1900
1901         for (;;) {
1902                 pending = 0;
1903                 spin_lock_irq(&chip->reg_lock);
1904                 for (i = 0; i < chip->num_streams; i++) {
1905                         struct azx_dev *azx_dev = &chip->azx_dev[i];
1906                         if (!azx_dev->irq_pending ||
1907                             !azx_dev->substream ||
1908                             !azx_dev->running)
1909                                 continue;
1910                         if (azx_position_ok(chip, azx_dev)) {
1911                                 azx_dev->irq_pending = 0;
1912                                 spin_unlock(&chip->reg_lock);
1913                                 snd_pcm_period_elapsed(azx_dev->substream);
1914                                 spin_lock(&chip->reg_lock);
1915                         } else
1916                                 pending++;
1917                 }
1918                 spin_unlock_irq(&chip->reg_lock);
1919                 if (!pending)
1920                         return;
1921                 cond_resched();
1922         }
1923 }
1924
1925 /* clear irq_pending flags and assure no on-going workq */
1926 static void azx_clear_irq_pending(struct azx *chip)
1927 {
1928         int i;
1929
1930         spin_lock_irq(&chip->reg_lock);
1931         for (i = 0; i < chip->num_streams; i++)
1932                 chip->azx_dev[i].irq_pending = 0;
1933         spin_unlock_irq(&chip->reg_lock);
1934 }
1935
1936 static struct snd_pcm_ops azx_pcm_ops = {
1937         .open = azx_pcm_open,
1938         .close = azx_pcm_close,
1939         .ioctl = snd_pcm_lib_ioctl,
1940         .hw_params = azx_pcm_hw_params,
1941         .hw_free = azx_pcm_hw_free,
1942         .prepare = azx_pcm_prepare,
1943         .trigger = azx_pcm_trigger,
1944         .pointer = azx_pcm_pointer,
1945         .page = snd_pcm_sgbuf_ops_page,
1946 };
1947
1948 static void azx_pcm_free(struct snd_pcm *pcm)
1949 {
1950         struct azx_pcm *apcm = pcm->private_data;
1951         if (apcm) {
1952                 apcm->chip->pcm[pcm->device] = NULL;
1953                 kfree(apcm);
1954         }
1955 }
1956
1957 static int
1958 azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec,
1959                       struct hda_pcm *cpcm)
1960 {
1961         struct azx *chip = bus->private_data;
1962         struct snd_pcm *pcm;
1963         struct azx_pcm *apcm;
1964         int pcm_dev = cpcm->device;
1965         int s, err;
1966
1967         if (pcm_dev >= HDA_MAX_PCMS) {
1968                 snd_printk(KERN_ERR SFX "Invalid PCM device number %d\n",
1969                            pcm_dev);
1970                 return -EINVAL;
1971         }
1972         if (chip->pcm[pcm_dev]) {
1973                 snd_printk(KERN_ERR SFX "PCM %d already exists\n", pcm_dev);
1974                 return -EBUSY;
1975         }
1976         err = snd_pcm_new(chip->card, cpcm->name, pcm_dev,
1977                           cpcm->stream[SNDRV_PCM_STREAM_PLAYBACK].substreams,
1978                           cpcm->stream[SNDRV_PCM_STREAM_CAPTURE].substreams,
1979                           &pcm);
1980         if (err < 0)
1981                 return err;
1982         strlcpy(pcm->name, cpcm->name, sizeof(pcm->name));
1983         apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
1984         if (apcm == NULL)
1985                 return -ENOMEM;
1986         apcm->chip = chip;
1987         apcm->codec = codec;
1988         pcm->private_data = apcm;
1989         pcm->private_free = azx_pcm_free;
1990         if (cpcm->pcm_type == HDA_PCM_TYPE_MODEM)
1991                 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
1992         chip->pcm[pcm_dev] = pcm;
1993         cpcm->pcm = pcm;
1994         for (s = 0; s < 2; s++) {
1995                 apcm->hinfo[s] = &cpcm->stream[s];
1996                 if (cpcm->stream[s].substreams)
1997                         snd_pcm_set_ops(pcm, s, &azx_pcm_ops);
1998         }
1999         /* buffer pre-allocation */
2000         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
2001                                               snd_dma_pci_data(chip->pci),
2002                                               1024 * 64, 32 * 1024 * 1024);
2003         return 0;
2004 }
2005
2006 /*
2007  * mixer creation - all stuff is implemented in hda module
2008  */
2009 static int __devinit azx_mixer_create(struct azx *chip)
2010 {
2011         return snd_hda_build_controls(chip->bus);
2012 }
2013
2014
2015 /*
2016  * initialize SD streams
2017  */
2018 static int __devinit azx_init_stream(struct azx *chip)
2019 {
2020         int i;
2021
2022         /* initialize each stream (aka device)
2023          * assign the starting bdl address to each stream (device)
2024          * and initialize
2025          */
2026         for (i = 0; i < chip->num_streams; i++) {
2027                 struct azx_dev *azx_dev = &chip->azx_dev[i];
2028                 azx_dev->posbuf = (u32 __iomem *)(chip->posbuf.area + i * 8);
2029                 /* offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
2030                 azx_dev->sd_addr = chip->remap_addr + (0x20 * i + 0x80);
2031                 /* int mask: SDI0=0x01, SDI1=0x02, ... SDO3=0x80 */
2032                 azx_dev->sd_int_sta_mask = 1 << i;
2033                 /* stream tag: must be non-zero and unique */
2034                 azx_dev->index = i;
2035                 azx_dev->stream_tag = i + 1;
2036         }
2037
2038         return 0;
2039 }
2040
2041 static int azx_acquire_irq(struct azx *chip, int do_disconnect)
2042 {
2043         if (request_irq(chip->pci->irq, azx_interrupt,
2044                         chip->msi ? 0 : IRQF_SHARED,
2045                         "HDA Intel", chip)) {
2046                 printk(KERN_ERR "hda-intel: unable to grab IRQ %d, "
2047                        "disabling device\n", chip->pci->irq);
2048                 if (do_disconnect)
2049                         snd_card_disconnect(chip->card);
2050                 return -1;
2051         }
2052         chip->irq = chip->pci->irq;
2053         pci_intx(chip->pci, !chip->msi);
2054         return 0;
2055 }
2056
2057
2058 static void azx_stop_chip(struct azx *chip)
2059 {
2060         if (!chip->initialized)
2061                 return;
2062
2063         /* disable interrupts */
2064         azx_int_disable(chip);
2065         azx_int_clear(chip);
2066
2067         /* disable CORB/RIRB */
2068         azx_free_cmd_io(chip);
2069
2070         /* disable position buffer */
2071         azx_writel(chip, DPLBASE, 0);
2072         azx_writel(chip, DPUBASE, 0);
2073
2074         chip->initialized = 0;
2075 }
2076
2077 #ifdef CONFIG_SND_HDA_POWER_SAVE
2078 /* power-up/down the controller */
2079 static void azx_power_notify(struct hda_bus *bus)
2080 {
2081         struct azx *chip = bus->private_data;
2082         struct hda_codec *c;
2083         int power_on = 0;
2084
2085         list_for_each_entry(c, &bus->codec_list, list) {
2086                 if (c->power_on) {
2087                         power_on = 1;
2088                         break;
2089                 }
2090         }
2091         if (power_on)
2092                 azx_init_chip(chip);
2093         else if (chip->running && power_save_controller &&
2094                  !bus->power_keep_link_on)
2095                 azx_stop_chip(chip);
2096 }
2097 #endif /* CONFIG_SND_HDA_POWER_SAVE */
2098
2099 #ifdef CONFIG_PM
2100 /*
2101  * power management
2102  */
2103
2104 static int snd_hda_codecs_inuse(struct hda_bus *bus)
2105 {
2106         struct hda_codec *codec;
2107
2108         list_for_each_entry(codec, &bus->codec_list, list) {
2109                 if (snd_hda_codec_needs_resume(codec))
2110                         return 1;
2111         }
2112         return 0;
2113 }
2114
2115 static int azx_suspend(struct pci_dev *pci, pm_message_t state)
2116 {
2117         struct snd_card *card = pci_get_drvdata(pci);
2118         struct azx *chip = card->private_data;
2119         int i;
2120
2121         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2122         azx_clear_irq_pending(chip);
2123         for (i = 0; i < HDA_MAX_PCMS; i++)
2124                 snd_pcm_suspend_all(chip->pcm[i]);
2125         if (chip->initialized)
2126                 snd_hda_suspend(chip->bus);
2127         azx_stop_chip(chip);
2128         if (chip->irq >= 0) {
2129                 free_irq(chip->irq, chip);
2130                 chip->irq = -1;
2131         }
2132         if (chip->msi)
2133                 pci_disable_msi(chip->pci);
2134         pci_disable_device(pci);
2135         pci_save_state(pci);
2136         pci_set_power_state(pci, pci_choose_state(pci, state));
2137         return 0;
2138 }
2139
2140 static int azx_resume(struct pci_dev *pci)
2141 {
2142         struct snd_card *card = pci_get_drvdata(pci);
2143         struct azx *chip = card->private_data;
2144
2145         pci_set_power_state(pci, PCI_D0);
2146         pci_restore_state(pci);
2147         if (pci_enable_device(pci) < 0) {
2148                 printk(KERN_ERR "hda-intel: pci_enable_device failed, "
2149                        "disabling device\n");
2150                 snd_card_disconnect(card);
2151                 return -EIO;
2152         }
2153         pci_set_master(pci);
2154         if (chip->msi)
2155                 if (pci_enable_msi(pci) < 0)
2156                         chip->msi = 0;
2157         if (azx_acquire_irq(chip, 1) < 0)
2158                 return -EIO;
2159         azx_init_pci(chip);
2160
2161         if (snd_hda_codecs_inuse(chip->bus))
2162                 azx_init_chip(chip);
2163
2164         snd_hda_resume(chip->bus);
2165         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2166         return 0;
2167 }
2168 #endif /* CONFIG_PM */
2169
2170
2171 /*
2172  * reboot notifier for hang-up problem at power-down
2173  */
2174 static int azx_halt(struct notifier_block *nb, unsigned long event, void *buf)
2175 {
2176         struct azx *chip = container_of(nb, struct azx, reboot_notifier);
2177         snd_hda_bus_reboot_notify(chip->bus);
2178         azx_stop_chip(chip);
2179         return NOTIFY_OK;
2180 }
2181
2182 static void azx_notifier_register(struct azx *chip)
2183 {
2184         chip->reboot_notifier.notifier_call = azx_halt;
2185         register_reboot_notifier(&chip->reboot_notifier);
2186 }
2187
2188 static void azx_notifier_unregister(struct azx *chip)
2189 {
2190         if (chip->reboot_notifier.notifier_call)
2191                 unregister_reboot_notifier(&chip->reboot_notifier);
2192 }
2193
2194 /*
2195  * destructor
2196  */
2197 static int azx_free(struct azx *chip)
2198 {
2199         int i;
2200
2201         azx_notifier_unregister(chip);
2202
2203         if (chip->initialized) {
2204                 azx_clear_irq_pending(chip);
2205                 for (i = 0; i < chip->num_streams; i++)
2206                         azx_stream_stop(chip, &chip->azx_dev[i]);
2207                 azx_stop_chip(chip);
2208         }
2209
2210         if (chip->irq >= 0)
2211                 free_irq(chip->irq, (void*)chip);
2212         if (chip->msi)
2213                 pci_disable_msi(chip->pci);
2214         if (chip->remap_addr)
2215                 iounmap(chip->remap_addr);
2216
2217         if (chip->azx_dev) {
2218                 for (i = 0; i < chip->num_streams; i++)
2219                         if (chip->azx_dev[i].bdl.area)
2220                                 snd_dma_free_pages(&chip->azx_dev[i].bdl);
2221         }
2222         if (chip->rb.area)
2223                 snd_dma_free_pages(&chip->rb);
2224         if (chip->posbuf.area)
2225                 snd_dma_free_pages(&chip->posbuf);
2226         pci_release_regions(chip->pci);
2227         pci_disable_device(chip->pci);
2228         kfree(chip->azx_dev);
2229         kfree(chip);
2230
2231         return 0;
2232 }
2233
2234 static int azx_dev_free(struct snd_device *device)
2235 {
2236         return azx_free(device->device_data);
2237 }
2238
2239 /*
2240  * white/black-listing for position_fix
2241  */
2242 static struct snd_pci_quirk position_fix_list[] __devinitdata = {
2243         SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
2244         SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
2245         SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
2246         SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
2247         SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
2248         {}
2249 };
2250
2251 static int __devinit check_position_fix(struct azx *chip, int fix)
2252 {
2253         const struct snd_pci_quirk *q;
2254
2255         switch (fix) {
2256         case POS_FIX_LPIB:
2257         case POS_FIX_POSBUF:
2258                 return fix;
2259         }
2260
2261         /* Check VIA/ATI HD Audio Controller exist */
2262         switch (chip->driver_type) {
2263         case AZX_DRIVER_VIA:
2264         case AZX_DRIVER_ATI:
2265                 chip->via_dmapos_patch = 1;
2266                 /* Use link position directly, avoid any transfer problem. */
2267                 return POS_FIX_LPIB;
2268         }
2269         chip->via_dmapos_patch = 0;
2270
2271         q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
2272         if (q) {
2273                 printk(KERN_INFO
2274                        "hda_intel: position_fix set to %d "
2275                        "for device %04x:%04x\n",
2276                        q->value, q->subvendor, q->subdevice);
2277                 return q->value;
2278         }
2279         return POS_FIX_AUTO;
2280 }
2281
2282 /*
2283  * black-lists for probe_mask
2284  */
2285 static struct snd_pci_quirk probe_mask_list[] __devinitdata = {
2286         /* Thinkpad often breaks the controller communication when accessing
2287          * to the non-working (or non-existing) modem codec slot.
2288          */
2289         SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
2290         SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
2291         SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
2292         /* broken BIOS */
2293         SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
2294         /* including bogus ALC268 in slot#2 that conflicts with ALC888 */
2295         SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
2296         /* forced codec slots */
2297         SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
2298         SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
2299         {}
2300 };
2301
2302 #define AZX_FORCE_CODEC_MASK    0x100
2303
2304 static void __devinit check_probe_mask(struct azx *chip, int dev)
2305 {
2306         const struct snd_pci_quirk *q;
2307
2308         chip->codec_probe_mask = probe_mask[dev];
2309         if (chip->codec_probe_mask == -1) {
2310                 q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
2311                 if (q) {
2312                         printk(KERN_INFO
2313                                "hda_intel: probe_mask set to 0x%x "
2314                                "for device %04x:%04x\n",
2315                                q->value, q->subvendor, q->subdevice);
2316                         chip->codec_probe_mask = q->value;
2317                 }
2318         }
2319
2320         /* check forced option */
2321         if (chip->codec_probe_mask != -1 &&
2322             (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
2323                 chip->codec_mask = chip->codec_probe_mask & 0xff;
2324                 printk(KERN_INFO "hda_intel: codec_mask forced to 0x%x\n",
2325                        chip->codec_mask);
2326         }
2327 }
2328
2329 /*
2330  * white/black-list for enable_msi
2331  */
2332 static struct snd_pci_quirk msi_black_list[] __devinitdata = {
2333         SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
2334         {}
2335 };
2336
2337 static void __devinit check_msi(struct azx *chip)
2338 {
2339         const struct snd_pci_quirk *q;
2340
2341         if (enable_msi >= 0) {
2342                 chip->msi = !!enable_msi;
2343                 return;
2344         }
2345         chip->msi = 1;  /* enable MSI as default */
2346         q = snd_pci_quirk_lookup(chip->pci, msi_black_list);
2347         if (q) {
2348                 printk(KERN_INFO
2349                        "hda_intel: msi for device %04x:%04x set to %d\n",
2350                        q->subvendor, q->subdevice, q->value);
2351                 chip->msi = q->value;
2352         }
2353 }
2354
2355
2356 /*
2357  * constructor
2358  */
2359 static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
2360                                 int dev, int driver_type,
2361                                 struct azx **rchip)
2362 {
2363         struct azx *chip;
2364         int i, err;
2365         unsigned short gcap;
2366         static struct snd_device_ops ops = {
2367                 .dev_free = azx_dev_free,
2368         };
2369
2370         *rchip = NULL;
2371
2372         err = pci_enable_device(pci);
2373         if (err < 0)
2374                 return err;
2375
2376         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
2377         if (!chip) {
2378                 snd_printk(KERN_ERR SFX "cannot allocate chip\n");
2379                 pci_disable_device(pci);
2380                 return -ENOMEM;
2381         }
2382
2383         spin_lock_init(&chip->reg_lock);
2384         mutex_init(&chip->open_mutex);
2385         chip->card = card;
2386         chip->pci = pci;
2387         chip->irq = -1;
2388         chip->driver_type = driver_type;
2389         check_msi(chip);
2390         chip->dev_index = dev;
2391         INIT_WORK(&chip->irq_pending_work, azx_irq_pending_work);
2392
2393         chip->position_fix = check_position_fix(chip, position_fix[dev]);
2394         check_probe_mask(chip, dev);
2395
2396         chip->single_cmd = single_cmd;
2397
2398         if (bdl_pos_adj[dev] < 0) {
2399                 switch (chip->driver_type) {
2400                 case AZX_DRIVER_ICH:
2401                         bdl_pos_adj[dev] = 1;
2402                         break;
2403                 default:
2404                         bdl_pos_adj[dev] = 32;
2405                         break;
2406                 }
2407         }
2408
2409 #if BITS_PER_LONG != 64
2410         /* Fix up base address on ULI M5461 */
2411         if (chip->driver_type == AZX_DRIVER_ULI) {
2412                 u16 tmp3;
2413                 pci_read_config_word(pci, 0x40, &tmp3);
2414                 pci_write_config_word(pci, 0x40, tmp3 | 0x10);
2415                 pci_write_config_dword(pci, PCI_BASE_ADDRESS_1, 0);
2416         }
2417 #endif
2418
2419         err = pci_request_regions(pci, "ICH HD audio");
2420         if (err < 0) {
2421                 kfree(chip);
2422                 pci_disable_device(pci);
2423                 return err;
2424         }
2425
2426         chip->addr = pci_resource_start(pci, 0);
2427         chip->remap_addr = pci_ioremap_bar(pci, 0);
2428         if (chip->remap_addr == NULL) {
2429                 snd_printk(KERN_ERR SFX "ioremap error\n");
2430                 err = -ENXIO;
2431                 goto errout;
2432         }
2433
2434         if (chip->msi)
2435                 if (pci_enable_msi(pci) < 0)
2436                         chip->msi = 0;
2437
2438         if (azx_acquire_irq(chip, 0) < 0) {
2439                 err = -EBUSY;
2440                 goto errout;
2441         }
2442
2443         pci_set_master(pci);
2444         synchronize_irq(chip->irq);
2445
2446         gcap = azx_readw(chip, GCAP);
2447         snd_printdd(SFX "chipset global capabilities = 0x%x\n", gcap);
2448
2449         /* disable SB600 64bit support for safety */
2450         if ((chip->driver_type == AZX_DRIVER_ATI) ||
2451             (chip->driver_type == AZX_DRIVER_ATIHDMI)) {
2452                 struct pci_dev *p_smbus;
2453                 p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
2454                                          PCI_DEVICE_ID_ATI_SBX00_SMBUS,
2455                                          NULL);
2456                 if (p_smbus) {
2457                         if (p_smbus->revision < 0x30)
2458                                 gcap &= ~ICH6_GCAP_64OK;
2459                         pci_dev_put(p_smbus);
2460                 }
2461         }
2462
2463         /* disable 64bit DMA address for Teradici */
2464         /* it does not work with device 6549:1200 subsys e4a2:040b */
2465         if (chip->driver_type == AZX_DRIVER_TERA)
2466                 gcap &= ~ICH6_GCAP_64OK;
2467
2468         /* allow 64bit DMA address if supported by H/W */
2469         if ((gcap & ICH6_GCAP_64OK) && !pci_set_dma_mask(pci, DMA_BIT_MASK(64)))
2470                 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(64));
2471         else {
2472                 pci_set_dma_mask(pci, DMA_BIT_MASK(32));
2473                 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32));
2474         }
2475
2476         /* read number of streams from GCAP register instead of using
2477          * hardcoded value
2478          */
2479         chip->capture_streams = (gcap >> 8) & 0x0f;
2480         chip->playback_streams = (gcap >> 12) & 0x0f;
2481         if (!chip->playback_streams && !chip->capture_streams) {
2482                 /* gcap didn't give any info, switching to old method */
2483
2484                 switch (chip->driver_type) {
2485                 case AZX_DRIVER_ULI:
2486                         chip->playback_streams = ULI_NUM_PLAYBACK;
2487                         chip->capture_streams = ULI_NUM_CAPTURE;
2488                         break;
2489                 case AZX_DRIVER_ATIHDMI:
2490                         chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
2491                         chip->capture_streams = ATIHDMI_NUM_CAPTURE;
2492                         break;
2493                 case AZX_DRIVER_GENERIC:
2494                 default:
2495                         chip->playback_streams = ICH6_NUM_PLAYBACK;
2496                         chip->capture_streams = ICH6_NUM_CAPTURE;
2497                         break;
2498                 }
2499         }
2500         chip->capture_index_offset = 0;
2501         chip->playback_index_offset = chip->capture_streams;
2502         chip->num_streams = chip->playback_streams + chip->capture_streams;
2503         chip->azx_dev = kcalloc(chip->num_streams, sizeof(*chip->azx_dev),
2504                                 GFP_KERNEL);
2505         if (!chip->azx_dev) {
2506                 snd_printk(KERN_ERR SFX "cannot malloc azx_dev\n");
2507                 goto errout;
2508         }
2509
2510         for (i = 0; i < chip->num_streams; i++) {
2511                 /* allocate memory for the BDL for each stream */
2512                 err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
2513                                           snd_dma_pci_data(chip->pci),
2514                                           BDL_SIZE, &chip->azx_dev[i].bdl);
2515                 if (err < 0) {
2516                         snd_printk(KERN_ERR SFX "cannot allocate BDL\n");
2517                         goto errout;
2518                 }
2519         }
2520         /* allocate memory for the position buffer */
2521         err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
2522                                   snd_dma_pci_data(chip->pci),
2523                                   chip->num_streams * 8, &chip->posbuf);
2524         if (err < 0) {
2525                 snd_printk(KERN_ERR SFX "cannot allocate posbuf\n");
2526                 goto errout;
2527         }
2528         /* allocate CORB/RIRB */
2529         err = azx_alloc_cmd_io(chip);
2530         if (err < 0)
2531                 goto errout;
2532
2533         /* initialize streams */
2534         azx_init_stream(chip);
2535
2536         /* initialize chip */
2537         azx_init_pci(chip);
2538         azx_init_chip(chip);
2539
2540         /* codec detection */
2541         if (!chip->codec_mask) {
2542                 snd_printk(KERN_ERR SFX "no codecs found!\n");
2543                 err = -ENODEV;
2544                 goto errout;
2545         }
2546
2547         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
2548         if (err <0) {
2549                 snd_printk(KERN_ERR SFX "Error creating device [card]!\n");
2550                 goto errout;
2551         }
2552
2553         strcpy(card->driver, "HDA-Intel");
2554         strlcpy(card->shortname, driver_short_names[chip->driver_type],
2555                 sizeof(card->shortname));
2556         snprintf(card->longname, sizeof(card->longname),
2557                  "%s at 0x%lx irq %i",
2558                  card->shortname, chip->addr, chip->irq);
2559
2560         *rchip = chip;
2561         return 0;
2562
2563  errout:
2564         azx_free(chip);
2565         return err;
2566 }
2567
2568 static void power_down_all_codecs(struct azx *chip)
2569 {
2570 #ifdef CONFIG_SND_HDA_POWER_SAVE
2571         /* The codecs were powered up in snd_hda_codec_new().
2572          * Now all initialization done, so turn them down if possible
2573          */
2574         struct hda_codec *codec;
2575         list_for_each_entry(codec, &chip->bus->codec_list, list) {
2576                 snd_hda_power_down(codec);
2577         }
2578 #endif
2579 }
2580
2581 static int __devinit azx_probe(struct pci_dev *pci,
2582                                const struct pci_device_id *pci_id)
2583 {
2584         static int dev;
2585         struct snd_card *card;
2586         struct azx *chip;
2587         int err;
2588
2589         if (dev >= SNDRV_CARDS)
2590                 return -ENODEV;
2591         if (!enable[dev]) {
2592                 dev++;
2593                 return -ENOENT;
2594         }
2595
2596         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
2597         if (err < 0) {
2598                 snd_printk(KERN_ERR SFX "Error creating card!\n");
2599                 return err;
2600         }
2601
2602         /* set this here since it's referred in snd_hda_load_patch() */
2603         snd_card_set_dev(card, &pci->dev);
2604
2605         err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
2606         if (err < 0)
2607                 goto out_free;
2608         card->private_data = chip;
2609
2610 #ifdef CONFIG_SND_HDA_INPUT_BEEP
2611         chip->beep_mode = beep_mode[dev];
2612 #endif
2613
2614         /* create codec instances */
2615         err = azx_codec_create(chip, model[dev]);
2616         if (err < 0)
2617                 goto out_free;
2618 #ifdef CONFIG_SND_HDA_PATCH_LOADER
2619         if (patch[dev]) {
2620                 snd_printk(KERN_ERR SFX "Applying patch firmware '%s'\n",
2621                            patch[dev]);
2622                 err = snd_hda_load_patch(chip->bus, patch[dev]);
2623                 if (err < 0)
2624                         goto out_free;
2625         }
2626 #endif
2627         if (!probe_only[dev]) {
2628                 err = azx_codec_configure(chip);
2629                 if (err < 0)
2630                         goto out_free;
2631         }
2632
2633         /* create PCM streams */
2634         err = snd_hda_build_pcms(chip->bus);
2635         if (err < 0)
2636                 goto out_free;
2637
2638         /* create mixer controls */
2639         err = azx_mixer_create(chip);
2640         if (err < 0)
2641                 goto out_free;
2642
2643         err = snd_card_register(card);
2644         if (err < 0)
2645                 goto out_free;
2646
2647         pci_set_drvdata(pci, card);
2648         chip->running = 1;
2649         power_down_all_codecs(chip);
2650         azx_notifier_register(chip);
2651
2652         dev++;
2653         return err;
2654 out_free:
2655         snd_card_free(card);
2656         return err;
2657 }
2658
2659 static void __devexit azx_remove(struct pci_dev *pci)
2660 {
2661         snd_card_free(pci_get_drvdata(pci));
2662         pci_set_drvdata(pci, NULL);
2663 }
2664
2665 /* PCI IDs */
2666 static struct pci_device_id azx_ids[] = {
2667         /* ICH 6..10 */
2668         { PCI_DEVICE(0x8086, 0x2668), .driver_data = AZX_DRIVER_ICH },
2669         { PCI_DEVICE(0x8086, 0x27d8), .driver_data = AZX_DRIVER_ICH },
2670         { PCI_DEVICE(0x8086, 0x269a), .driver_data = AZX_DRIVER_ICH },
2671         { PCI_DEVICE(0x8086, 0x284b), .driver_data = AZX_DRIVER_ICH },
2672         { PCI_DEVICE(0x8086, 0x2911), .driver_data = AZX_DRIVER_ICH },
2673         { PCI_DEVICE(0x8086, 0x293e), .driver_data = AZX_DRIVER_ICH },
2674         { PCI_DEVICE(0x8086, 0x293f), .driver_data = AZX_DRIVER_ICH },
2675         { PCI_DEVICE(0x8086, 0x3a3e), .driver_data = AZX_DRIVER_ICH },
2676         { PCI_DEVICE(0x8086, 0x3a6e), .driver_data = AZX_DRIVER_ICH },
2677         /* PCH */
2678         { PCI_DEVICE(0x8086, 0x3b56), .driver_data = AZX_DRIVER_ICH },
2679         /* CPT */
2680         { PCI_DEVICE(0x8086, 0x1c20), .driver_data = AZX_DRIVER_ICH },
2681         /* SCH */
2682         { PCI_DEVICE(0x8086, 0x811b), .driver_data = AZX_DRIVER_SCH },
2683         /* ATI SB 450/600 */
2684         { PCI_DEVICE(0x1002, 0x437b), .driver_data = AZX_DRIVER_ATI },
2685         { PCI_DEVICE(0x1002, 0x4383), .driver_data = AZX_DRIVER_ATI },
2686         /* ATI HDMI */
2687         { PCI_DEVICE(0x1002, 0x793b), .driver_data = AZX_DRIVER_ATIHDMI },
2688         { PCI_DEVICE(0x1002, 0x7919), .driver_data = AZX_DRIVER_ATIHDMI },
2689         { PCI_DEVICE(0x1002, 0x960f), .driver_data = AZX_DRIVER_ATIHDMI },
2690         { PCI_DEVICE(0x1002, 0x970f), .driver_data = AZX_DRIVER_ATIHDMI },
2691         { PCI_DEVICE(0x1002, 0xaa00), .driver_data = AZX_DRIVER_ATIHDMI },
2692         { PCI_DEVICE(0x1002, 0xaa08), .driver_data = AZX_DRIVER_ATIHDMI },
2693         { PCI_DEVICE(0x1002, 0xaa10), .driver_data = AZX_DRIVER_ATIHDMI },
2694         { PCI_DEVICE(0x1002, 0xaa18), .driver_data = AZX_DRIVER_ATIHDMI },
2695         { PCI_DEVICE(0x1002, 0xaa20), .driver_data = AZX_DRIVER_ATIHDMI },
2696         { PCI_DEVICE(0x1002, 0xaa28), .driver_data = AZX_DRIVER_ATIHDMI },
2697         { PCI_DEVICE(0x1002, 0xaa30), .driver_data = AZX_DRIVER_ATIHDMI },
2698         { PCI_DEVICE(0x1002, 0xaa38), .driver_data = AZX_DRIVER_ATIHDMI },
2699         { PCI_DEVICE(0x1002, 0xaa40), .driver_data = AZX_DRIVER_ATIHDMI },
2700         { PCI_DEVICE(0x1002, 0xaa48), .driver_data = AZX_DRIVER_ATIHDMI },
2701         /* VIA VT8251/VT8237A */
2702         { PCI_DEVICE(0x1106, 0x3288), .driver_data = AZX_DRIVER_VIA },
2703         /* SIS966 */
2704         { PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
2705         /* ULI M5461 */
2706         { PCI_DEVICE(0x10b9, 0x5461), .driver_data = AZX_DRIVER_ULI },
2707         /* NVIDIA MCP */
2708         { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
2709           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2710           .class_mask = 0xffffff,
2711           .driver_data = AZX_DRIVER_NVIDIA },
2712         /* Teradici */
2713         { PCI_DEVICE(0x6549, 0x1200), .driver_data = AZX_DRIVER_TERA },
2714         /* Creative X-Fi (CA0110-IBG) */
2715 #if !defined(CONFIG_SND_CTXFI) && !defined(CONFIG_SND_CTXFI_MODULE)
2716         /* the following entry conflicts with snd-ctxfi driver,
2717          * as ctxfi driver mutates from HD-audio to native mode with
2718          * a special command sequence.
2719          */
2720         { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
2721           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2722           .class_mask = 0xffffff,
2723           .driver_data = AZX_DRIVER_GENERIC },
2724 #else
2725         /* this entry seems still valid -- i.e. without emu20kx chip */
2726         { PCI_DEVICE(0x1102, 0x0009), .driver_data = AZX_DRIVER_GENERIC },
2727 #endif
2728         /* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
2729         { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
2730           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2731           .class_mask = 0xffffff,
2732           .driver_data = AZX_DRIVER_GENERIC },
2733         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
2734           .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
2735           .class_mask = 0xffffff,
2736           .driver_data = AZX_DRIVER_GENERIC },
2737         { 0, }
2738 };
2739 MODULE_DEVICE_TABLE(pci, azx_ids);
2740
2741 /* pci_driver definition */
2742 static struct pci_driver driver = {
2743         .name = "HDA Intel",
2744         .id_table = azx_ids,
2745         .probe = azx_probe,
2746         .remove = __devexit_p(azx_remove),
2747 #ifdef CONFIG_PM
2748         .suspend = azx_suspend,
2749         .resume = azx_resume,
2750 #endif
2751 };
2752
2753 static int __init alsa_card_azx_init(void)
2754 {
2755         return pci_register_driver(&driver);
2756 }
2757
2758 static void __exit alsa_card_azx_exit(void)
2759 {
2760         pci_unregister_driver(&driver);
2761 }
2762
2763 module_init(alsa_card_azx_init)
2764 module_exit(alsa_card_azx_exit)