sound/pci/hda/hda_priv.h

   1 /*
   2  *  Common defines for the alsa driver code base for HD Audio.
   3  *
   4  *  This program is free software; you can redistribute it and/or modify it
   5  *  under the terms of the GNU General Public License as published by the Free
   6  *  Software Foundation; either version 2 of the License, or (at your option)
   7  *  any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful, but WITHOUT
  10  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  *  more details.
  13  */
  14
  15 #ifndef __SOUND_HDA_PRIV_H
  16 #define __SOUND_HDA_PRIV_H
  17
  18 #include <linux/clocksource.h>
  19 #include <sound/core.h>
  20 #include <sound/pcm.h>
  21
  22 /*
  23  * registers
  24  */
  25 #define AZX_REG_GCAP                    0x00
  26 #define   AZX_GCAP_64OK         (1 << 0)   /* 64bit address support */
  27 #define   AZX_GCAP_NSDO         (3 << 1)   /* # of serial data out signals */
  28 #define   AZX_GCAP_BSS          (31 << 3)  /* # of bidirectional streams */
  29 #define   AZX_GCAP_ISS          (15 << 8)  /* # of input streams */
  30 #define   AZX_GCAP_OSS          (15 << 12) /* # of output streams */
  31 #define AZX_REG_VMIN                    0x02
  32 #define AZX_REG_VMAJ                    0x03
  33 #define AZX_REG_OUTPAY                  0x04
  34 #define AZX_REG_INPAY                   0x06
  35 #define AZX_REG_GCTL                    0x08
  36 #define   AZX_GCTL_RESET        (1 << 0)   /* controller reset */
  37 #define   AZX_GCTL_FCNTRL       (1 << 1)   /* flush control */
  38 #define   AZX_GCTL_UNSOL        (1 << 8)   /* accept unsol. response enable */
  39 #define AZX_REG_WAKEEN                  0x0c
  40 #define AZX_REG_STATESTS                0x0e
  41 #define AZX_REG_GSTS                    0x10
  42 #define   AZX_GSTS_FSTS         (1 << 1)   /* flush status */
  43 #define AZX_REG_INTCTL                  0x20
  44 #define AZX_REG_INTSTS                  0x24
  45 #define AZX_REG_WALLCLK                 0x30    /* 24Mhz source */
  46 #define AZX_REG_OLD_SSYNC               0x34    /* SSYNC for old ICH */
  47 #define AZX_REG_SSYNC                   0x38
  48 #define AZX_REG_CORBLBASE               0x40
  49 #define AZX_REG_CORBUBASE               0x44
  50 #define AZX_REG_CORBWP                  0x48
  51 #define AZX_REG_CORBRP                  0x4a
  52 #define   AZX_CORBRP_RST        (1 << 15)  /* read pointer reset */
  53 #define AZX_REG_CORBCTL                 0x4c
  54 #define   AZX_CORBCTL_RUN       (1 << 1)   /* enable DMA */
  55 #define   AZX_CORBCTL_CMEIE     (1 << 0)   /* enable memory error irq */
  56 #define AZX_REG_CORBSTS                 0x4d
  57 #define   AZX_CORBSTS_CMEI      (1 << 0)   /* memory error indication */
  58 #define AZX_REG_CORBSIZE                0x4e
  59
  60 #define AZX_REG_RIRBLBASE               0x50
  61 #define AZX_REG_RIRBUBASE               0x54
  62 #define AZX_REG_RIRBWP                  0x58
  63 #define   AZX_RIRBWP_RST        (1 << 15)  /* write pointer reset */
  64 #define AZX_REG_RINTCNT                 0x5a
  65 #define AZX_REG_RIRBCTL                 0x5c
  66 #define   AZX_RBCTL_IRQ_EN      (1 << 0)   /* enable IRQ */
  67 #define   AZX_RBCTL_DMA_EN      (1 << 1)   /* enable DMA */
  68 #define   AZX_RBCTL_OVERRUN_EN  (1 << 2)   /* enable overrun irq */
  69 #define AZX_REG_RIRBSTS                 0x5d
  70 #define   AZX_RBSTS_IRQ         (1 << 0)   /* response irq */
  71 #define   AZX_RBSTS_OVERRUN     (1 << 2)   /* overrun irq */
  72 #define AZX_REG_RIRBSIZE                0x5e
  73
  74 #define AZX_REG_IC                      0x60
  75 #define AZX_REG_IR                      0x64
  76 #define AZX_REG_IRS                     0x68
  77 #define   AZX_IRS_VALID         (1<<1)
  78 #define   AZX_IRS_BUSY          (1<<0)
  79
  80 #define AZX_REG_DPLBASE                 0x70
  81 #define AZX_REG_DPUBASE                 0x74
  82 #define   AZX_DPLBASE_ENABLE    0x1     /* Enable position buffer */
  83
  84 /* SD offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
  85 enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
  86
  87 /* stream register offsets from stream base */
  88 #define AZX_REG_SD_CTL                  0x00
  89 #define AZX_REG_SD_STS                  0x03
  90 #define AZX_REG_SD_LPIB                 0x04
  91 #define AZX_REG_SD_CBL                  0x08
  92 #define AZX_REG_SD_LVI                  0x0c
  93 #define AZX_REG_SD_FIFOW                0x0e
  94 #define AZX_REG_SD_FIFOSIZE             0x10
  95 #define AZX_REG_SD_FORMAT               0x12
  96 #define AZX_REG_SD_BDLPL                0x18
  97 #define AZX_REG_SD_BDLPU                0x1c
  98
  99 /* PCI space */
 100 #define AZX_PCIREG_TCSEL                0x44
 101
 102 /*
 103  * other constants
 104  */
 105
 106 /* max number of fragments - we may use more if allocating more pages for BDL */
 107 #define BDL_SIZE                4096
 108 #define AZX_MAX_BDL_ENTRIES     (BDL_SIZE / 16)
 109 #define AZX_MAX_FRAG            32
 110 /* max buffer size - no h/w limit, you can increase as you like */
 111 #define AZX_MAX_BUF_SIZE        (1024*1024*1024)
 112
 113 /* RIRB int mask: overrun[2], response[0] */
 114 #define RIRB_INT_RESPONSE       0x01
 115 #define RIRB_INT_OVERRUN        0x04
 116 #define RIRB_INT_MASK           0x05
 117
 118 /* STATESTS int mask: S3,SD2,SD1,SD0 */
 119 #define AZX_MAX_CODECS          8
 120 #define AZX_DEFAULT_CODECS      4
 121 #define STATESTS_INT_MASK       ((1 << AZX_MAX_CODECS) - 1)
 122
 123 /* SD_CTL bits */
 124 #define SD_CTL_STREAM_RESET     0x01    /* stream reset bit */
 125 #define SD_CTL_DMA_START        0x02    /* stream DMA start bit */
 126 #define SD_CTL_STRIPE           (3 << 16)       /* stripe control */
 127 #define SD_CTL_TRAFFIC_PRIO     (1 << 18)       /* traffic priority */
 128 #define SD_CTL_DIR              (1 << 19)       /* bi-directional stream */
 129 #define SD_CTL_STREAM_TAG_MASK  (0xf << 20)
 130 #define SD_CTL_STREAM_TAG_SHIFT 20
 131
 132 /* SD_CTL and SD_STS */
 133 #define SD_INT_DESC_ERR         0x10    /* descriptor error interrupt */
 134 #define SD_INT_FIFO_ERR         0x08    /* FIFO error interrupt */
 135 #define SD_INT_COMPLETE         0x04    /* completion interrupt */
 136 #define SD_INT_MASK             (SD_INT_DESC_ERR|SD_INT_FIFO_ERR|\
 137                                  SD_INT_COMPLETE)
 138
 139 /* SD_STS */
 140 #define SD_STS_FIFO_READY       0x20    /* FIFO ready */
 141
 142 /* INTCTL and INTSTS */
 143 #define AZX_INT_ALL_STREAM      0xff       /* all stream interrupts */
 144 #define AZX_INT_CTRL_EN 0x40000000 /* controller interrupt enable bit */
 145 #define AZX_INT_GLOBAL_EN       0x80000000 /* global interrupt enable bit */
 146
 147 /* below are so far hardcoded - should read registers in future */
 148 #define AZX_MAX_CORB_ENTRIES    256
 149 #define AZX_MAX_RIRB_ENTRIES    256
 150
 151 /* driver quirks (capabilities) */
 152 /* bits 0-7 are used for indicating driver type */
 153 #define AZX_DCAPS_NO_TCSEL      (1 << 8)        /* No Intel TCSEL bit */
 154 #define AZX_DCAPS_NO_MSI        (1 << 9)        /* No MSI support */
 155 #define AZX_DCAPS_SNOOP_MASK    (3 << 10)       /* snoop type mask */
 156 #define AZX_DCAPS_SNOOP_OFF     (1 << 12)       /* snoop default off */
 157 #define AZX_DCAPS_RIRB_DELAY    (1 << 13)       /* Long delay in read loop */
 158 #define AZX_DCAPS_RIRB_PRE_DELAY (1 << 14)      /* Put a delay before read */
 159 #define AZX_DCAPS_CTX_WORKAROUND (1 << 15)      /* X-Fi workaround */
 160 #define AZX_DCAPS_POSFIX_LPIB   (1 << 16)       /* Use LPIB as default */
 161 #define AZX_DCAPS_POSFIX_VIA    (1 << 17)       /* Use VIACOMBO as default */
 162 #define AZX_DCAPS_NO_64BIT      (1 << 18)       /* No 64bit address */
 163 #define AZX_DCAPS_SYNC_WRITE    (1 << 19)       /* sync each cmd write */
 164 #define AZX_DCAPS_OLD_SSYNC     (1 << 20)       /* Old SSYNC reg for ICH */
 165 #define AZX_DCAPS_BUFSIZE       (1 << 21)       /* no buffer size alignment */
 166 #define AZX_DCAPS_ALIGN_BUFSIZE (1 << 22)       /* buffer size alignment */
 167 #define AZX_DCAPS_4K_BDLE_BOUNDARY (1 << 23)    /* BDLE in 4k boundary */
 168 #define AZX_DCAPS_REVERSE_ASSIGN (1 << 24)      /* Assign devices in reverse order */
 169 #define AZX_DCAPS_COUNT_LPIB_DELAY  (1 << 25)   /* Take LPIB as delay */
 170 #define AZX_DCAPS_PM_RUNTIME    (1 << 26)       /* runtime PM support */
 171 #define AZX_DCAPS_I915_POWERWELL (1 << 27)      /* HSW i915 powerwell support */
 172 #define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28)   /* CORBRP clears itself after reset */
 173
 174 enum {
 175         AZX_SNOOP_TYPE_NONE ,
 176         AZX_SNOOP_TYPE_SCH,
 177         AZX_SNOOP_TYPE_ATI,
 178         AZX_SNOOP_TYPE_NVIDIA,
 179 };
 180
 181 /* HD Audio class code */
 182 #define PCI_CLASS_MULTIMEDIA_HD_AUDIO   0x0403
 183
 184 struct azx_dev {
 185         struct snd_dma_buffer bdl; /* BDL buffer */
 186         u32 *posbuf;            /* position buffer pointer */
 187
 188         unsigned int bufsize;   /* size of the play buffer in bytes */
 189         unsigned int period_bytes; /* size of the period in bytes */
 190         unsigned int frags;     /* number for period in the play buffer */
 191         unsigned int fifo_size; /* FIFO size */
 192         unsigned long start_wallclk;    /* start + minimum wallclk */
 193         unsigned long period_wallclk;   /* wallclk for period */
 194
 195         void __iomem *sd_addr;  /* stream descriptor pointer */
 196
 197         u32 sd_int_sta_mask;    /* stream int status mask */
 198
 199         /* pcm support */
 200         struct snd_pcm_substream *substream;    /* assigned substream,
 201                                                  * set in PCM open
 202                                                  */
 203         unsigned int format_val;        /* format value to be set in the
 204                                          * controller and the codec
 205                                          */
 206         unsigned char stream_tag;       /* assigned stream */
 207         unsigned char index;            /* stream index */
 208         int assigned_key;               /* last device# key assigned to */
 209
 210         unsigned int opened:1;
 211         unsigned int running:1;
 212         unsigned int irq_pending:1;
 213         unsigned int prepared:1;
 214         unsigned int locked:1;
 215         /*
 216          * For VIA:
 217          *  A flag to ensure DMA position is 0
 218          *  when link position is not greater than FIFO size
 219          */
 220         unsigned int insufficient:1;
 221         unsigned int wc_marked:1;
 222         unsigned int no_period_wakeup:1;
 223
 224         struct timecounter  azx_tc;
 225         struct cyclecounter azx_cc;
 226
 227         int delay_negative_threshold;
 228
 229 #ifdef CONFIG_SND_HDA_DSP_LOADER
 230         /* Allows dsp load to have sole access to the playback stream. */
 231         struct mutex dsp_mutex;
 232 #endif
 233 };
 234
 235 /* CORB/RIRB */
 236 struct azx_rb {
 237         u32 *buf;               /* CORB/RIRB buffer
 238                                  * Each CORB entry is 4byte, RIRB is 8byte
 239                                  */
 240         dma_addr_t addr;        /* physical address of CORB/RIRB buffer */
 241         /* for RIRB */
 242         unsigned short rp, wp;  /* read/write pointers */
 243         int cmds[AZX_MAX_CODECS];       /* number of pending requests */
 244         u32 res[AZX_MAX_CODECS];        /* last read value */
 245 };
 246
 247 struct azx;
 248
 249 /* Functions to read/write to hda registers. */
 250 struct hda_controller_ops {
 251         /* Register Access */
 252         void (*reg_writel)(u32 value, u32 __iomem *addr);
 253         u32 (*reg_readl)(u32 __iomem *addr);
 254         void (*reg_writew)(u16 value, u16 __iomem *addr);
 255         u16 (*reg_readw)(u16 __iomem *addr);
 256         void (*reg_writeb)(u8 value, u8 __iomem *addr);
 257         u8 (*reg_readb)(u8 __iomem *addr);
 258         /* Disable msi if supported, PCI only */
 259         int (*disable_msi_reset_irq)(struct azx *);
 260         /* Allocation ops */
 261         int (*dma_alloc_pages)(struct azx *chip,
 262                                int type,
 263                                size_t size,
 264                                struct snd_dma_buffer *buf);
 265         void (*dma_free_pages)(struct azx *chip, struct snd_dma_buffer *buf);
 266         int (*substream_alloc_pages)(struct azx *chip,
 267                                      struct snd_pcm_substream *substream,
 268                                      size_t size);
 269         int (*substream_free_pages)(struct azx *chip,
 270                                     struct snd_pcm_substream *substream);
 271         void (*pcm_mmap_prepare)(struct snd_pcm_substream *substream,
 272                                  struct vm_area_struct *area);
 273         /* Check if current position is acceptable */
 274         int (*position_check)(struct azx *chip, struct azx_dev *azx_dev);
 275 };
 276
 277 struct azx_pcm {
 278         struct azx *chip;
 279         struct snd_pcm *pcm;
 280         struct hda_codec *codec;
 281         struct hda_pcm_stream *hinfo[2];
 282         struct list_head list;
 283 };
 284
 285 typedef unsigned int (*azx_get_pos_callback_t)(struct azx *, struct azx_dev *);
 286 typedef int (*azx_get_delay_callback_t)(struct azx *, struct azx_dev *, unsigned int pos);
 287
 288 struct azx {
 289         struct snd_card *card;
 290         struct pci_dev *pci;
 291         int dev_index;
 292
 293         /* chip type specific */
 294         int driver_type;
 295         unsigned int driver_caps;
 296         int playback_streams;
 297         int playback_index_offset;
 298         int capture_streams;
 299         int capture_index_offset;
 300         int num_streams;
 301         const int *jackpoll_ms; /* per-card jack poll interval */
 302
 303         /* Register interaction. */
 304         const struct hda_controller_ops *ops;
 305
 306         /* position adjustment callbacks */
 307         azx_get_pos_callback_t get_position[2];
 308         azx_get_delay_callback_t get_delay[2];
 309
 310         /* pci resources */
 311         unsigned long addr;
 312         void __iomem *remap_addr;
 313         int irq;
 314
 315         /* locks */
 316         spinlock_t reg_lock;
 317         struct mutex open_mutex; /* Prevents concurrent open/close operations */
 318
 319         /* streams (x num_streams) */
 320         struct azx_dev *azx_dev;
 321
 322         /* PCM */
 323         struct list_head pcm_list; /* azx_pcm list */
 324
 325         /* HD codec */
 326         unsigned short codec_mask;
 327         int  codec_probe_mask; /* copied from probe_mask option */
 328         struct hda_bus *bus;
 329         unsigned int beep_mode;
 330
 331         /* CORB/RIRB */
 332         struct azx_rb corb;
 333         struct azx_rb rirb;
 334
 335         /* CORB/RIRB and position buffers */
 336         struct snd_dma_buffer rb;
 337         struct snd_dma_buffer posbuf;
 338
 339 #ifdef CONFIG_SND_HDA_PATCH_LOADER
 340         const struct firmware *fw;
 341 #endif
 342
 343         /* flags */
 344         const int *bdl_pos_adj;
 345         int poll_count;
 346         unsigned int running:1;
 347         unsigned int initialized:1;
 348         unsigned int single_cmd:1;
 349         unsigned int polling_mode:1;
 350         unsigned int msi:1;
 351         unsigned int probing:1; /* codec probing phase */
 352         unsigned int snoop:1;
 353         unsigned int align_buffer_size:1;
 354         unsigned int region_requested:1;
 355         unsigned int disabled:1; /* disabled by VGA-switcher */
 356
 357         /* for debugging */
 358         unsigned int last_cmd[AZX_MAX_CODECS];
 359
 360         /* reboot notifier (for mysterious hangup problem at power-down) */
 361         struct notifier_block reboot_notifier;
 362
 363 #ifdef CONFIG_SND_HDA_DSP_LOADER
 364         struct azx_dev saved_azx_dev;
 365 #endif
 366 };
 367
 368 #ifdef CONFIG_X86
 369 #define azx_snoop(chip)         ((chip)->snoop)
 370 #else
 371 #define azx_snoop(chip)         true
 372 #endif
 373
 374 /*
 375  * macros for easy use
 376  */
 377
 378 #define azx_writel(chip, reg, value) \
 379         ((chip)->ops->reg_writel(value, (chip)->remap_addr + AZX_REG_##reg))
 380 #define azx_readl(chip, reg) \
 381         ((chip)->ops->reg_readl((chip)->remap_addr + AZX_REG_##reg))
 382 #define azx_writew(chip, reg, value) \
 383         ((chip)->ops->reg_writew(value, (chip)->remap_addr + AZX_REG_##reg))
 384 #define azx_readw(chip, reg) \
 385         ((chip)->ops->reg_readw((chip)->remap_addr + AZX_REG_##reg))
 386 #define azx_writeb(chip, reg, value) \
 387         ((chip)->ops->reg_writeb(value, (chip)->remap_addr + AZX_REG_##reg))
 388 #define azx_readb(chip, reg) \
 389         ((chip)->ops->reg_readb((chip)->remap_addr + AZX_REG_##reg))
 390
 391 #define azx_sd_writel(chip, dev, reg, value) \
 392         ((chip)->ops->reg_writel(value, (dev)->sd_addr + AZX_REG_##reg))
 393 #define azx_sd_readl(chip, dev, reg) \
 394         ((chip)->ops->reg_readl((dev)->sd_addr + AZX_REG_##reg))
 395 #define azx_sd_writew(chip, dev, reg, value) \
 396         ((chip)->ops->reg_writew(value, (dev)->sd_addr + AZX_REG_##reg))
 397 #define azx_sd_readw(chip, dev, reg) \
 398         ((chip)->ops->reg_readw((dev)->sd_addr + AZX_REG_##reg))
 399 #define azx_sd_writeb(chip, dev, reg, value) \
 400         ((chip)->ops->reg_writeb(value, (dev)->sd_addr + AZX_REG_##reg))
 401 #define azx_sd_readb(chip, dev, reg) \
 402         ((chip)->ops->reg_readb((dev)->sd_addr + AZX_REG_##reg))
 403
 404 #endif /* __SOUND_HDA_PRIV_H */