sound/pci/hda/hda_controller.h

   1 /*
   2  *  Common functionality 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_CONTROLLER_H
  16 #define __SOUND_HDA_CONTROLLER_H
  17
  18 #include <linux/timecounter.h>
  19 #include <linux/interrupt.h>
  20 #include <sound/core.h>
  21 #include <sound/pcm.h>
  22 #include <sound/initval.h>
  23 #include "hda_codec.h"
  24 #include <sound/hda_register.h>
  25
  26 #define AZX_MAX_CODECS          HDA_MAX_CODECS
  27 #define AZX_DEFAULT_CODECS      4
  28
  29 /* driver quirks (capabilities) */
  30 /* bits 0-7 are used for indicating driver type */
  31 #define AZX_DCAPS_NO_TCSEL      (1 << 8)        /* No Intel TCSEL bit */
  32 #define AZX_DCAPS_NO_MSI        (1 << 9)        /* No MSI support */
  33 #define AZX_DCAPS_SNOOP_MASK    (3 << 10)       /* snoop type mask */
  34 #define AZX_DCAPS_SNOOP_OFF     (1 << 12)       /* snoop default off */
  35 /* 13 unused */
  36 /* 14 unused */
  37 #define AZX_DCAPS_CTX_WORKAROUND (1 << 15)      /* X-Fi workaround */
  38 #define AZX_DCAPS_POSFIX_LPIB   (1 << 16)       /* Use LPIB as default */
  39 /* 17 unused */
  40 #define AZX_DCAPS_NO_64BIT      (1 << 18)       /* No 64bit address */
  41 #define AZX_DCAPS_SYNC_WRITE    (1 << 19)       /* sync each cmd write */
  42 #define AZX_DCAPS_OLD_SSYNC     (1 << 20)       /* Old SSYNC reg for ICH */
  43 #define AZX_DCAPS_NO_ALIGN_BUFSIZE (1 << 21)    /* no buffer size alignment */
  44 /* 22 unused */
  45 #define AZX_DCAPS_4K_BDLE_BOUNDARY (1 << 23)    /* BDLE in 4k boundary */
  46 /* 24 unused */
  47 #define AZX_DCAPS_COUNT_LPIB_DELAY  (1 << 25)   /* Take LPIB as delay */
  48 #define AZX_DCAPS_PM_RUNTIME    (1 << 26)       /* runtime PM support */
  49 #ifdef CONFIG_SND_HDA_I915
  50 #define AZX_DCAPS_I915_POWERWELL (1 << 27)      /* HSW i915 powerwell support */
  51 #else
  52 #define AZX_DCAPS_I915_POWERWELL 0              /* NOP */
  53 #endif
  54 #define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28)   /* CORBRP clears itself after reset */
  55 #define AZX_DCAPS_NO_MSI64      (1 << 29)       /* Stick to 32-bit MSIs */
  56 #define AZX_DCAPS_SEPARATE_STREAM_TAG   (1 << 30) /* capture and playback use separate stream tag */
  57
  58 enum {
  59         AZX_SNOOP_TYPE_NONE,
  60         AZX_SNOOP_TYPE_SCH,
  61         AZX_SNOOP_TYPE_ATI,
  62         AZX_SNOOP_TYPE_NVIDIA,
  63 };
  64
  65 struct azx_dev {
  66         struct hdac_stream core;
  67
  68         unsigned int irq_pending:1;
  69         /*
  70          * For VIA:
  71          *  A flag to ensure DMA position is 0
  72          *  when link position is not greater than FIFO size
  73          */
  74         unsigned int insufficient:1;
  75         unsigned int wc_marked:1;
  76 };
  77
  78 #define azx_stream(dev)         (&(dev)->core)
  79 #define stream_to_azx_dev(s)    container_of(s, struct azx_dev, core)
  80
  81 struct azx;
  82
  83 /* Functions to read/write to hda registers. */
  84 struct hda_controller_ops {
  85         /* Disable msi if supported, PCI only */
  86         int (*disable_msi_reset_irq)(struct azx *);
  87         int (*substream_alloc_pages)(struct azx *chip,
  88                                      struct snd_pcm_substream *substream,
  89                                      size_t size);
  90         int (*substream_free_pages)(struct azx *chip,
  91                                     struct snd_pcm_substream *substream);
  92         void (*pcm_mmap_prepare)(struct snd_pcm_substream *substream,
  93                                  struct vm_area_struct *area);
  94         /* Check if current position is acceptable */
  95         int (*position_check)(struct azx *chip, struct azx_dev *azx_dev);
  96         /* enable/disable the link power */
  97         int (*link_power)(struct azx *chip, bool enable);
  98 };
  99
 100 struct azx_pcm {
 101         struct azx *chip;
 102         struct snd_pcm *pcm;
 103         struct hda_codec *codec;
 104         struct hda_pcm *info;
 105         struct list_head list;
 106 };
 107
 108 typedef unsigned int (*azx_get_pos_callback_t)(struct azx *, struct azx_dev *);
 109 typedef int (*azx_get_delay_callback_t)(struct azx *, struct azx_dev *, unsigned int pos);
 110
 111 struct azx {
 112         struct hda_bus bus;
 113
 114         struct snd_card *card;
 115         struct pci_dev *pci;
 116         int dev_index;
 117
 118         /* chip type specific */
 119         int driver_type;
 120         unsigned int driver_caps;
 121         int playback_streams;
 122         int playback_index_offset;
 123         int capture_streams;
 124         int capture_index_offset;
 125         int num_streams;
 126         const int *jackpoll_ms; /* per-card jack poll interval */
 127
 128         /* Register interaction. */
 129         const struct hda_controller_ops *ops;
 130
 131         /* position adjustment callbacks */
 132         azx_get_pos_callback_t get_position[2];
 133         azx_get_delay_callback_t get_delay[2];
 134
 135         /* locks */
 136         struct mutex open_mutex; /* Prevents concurrent open/close operations */
 137
 138         /* PCM */
 139         struct list_head pcm_list; /* azx_pcm list */
 140
 141         /* HD codec */
 142         int  codec_probe_mask; /* copied from probe_mask option */
 143         unsigned int beep_mode;
 144
 145 #ifdef CONFIG_SND_HDA_PATCH_LOADER
 146         const struct firmware *fw;
 147 #endif
 148
 149         /* flags */
 150         int bdl_pos_adj;
 151         int poll_count;
 152         unsigned int running:1;
 153         unsigned int single_cmd:1;
 154         unsigned int polling_mode:1;
 155         unsigned int msi:1;
 156         unsigned int probing:1; /* codec probing phase */
 157         unsigned int snoop:1;
 158         unsigned int align_buffer_size:1;
 159         unsigned int region_requested:1;
 160         unsigned int disabled:1; /* disabled by vga_switcheroo */
 161
 162 #ifdef CONFIG_SND_HDA_DSP_LOADER
 163         struct azx_dev saved_azx_dev;
 164 #endif
 165 };
 166
 167 #define azx_bus(chip)   (&(chip)->bus.core)
 168 #define bus_to_azx(_bus)        container_of(_bus, struct azx, bus.core)
 169
 170 #ifdef CONFIG_X86
 171 #define azx_snoop(chip)         ((chip)->snoop)
 172 #else
 173 #define azx_snoop(chip)         true
 174 #endif
 175
 176 /*
 177  * macros for easy use
 178  */
 179
 180 #define azx_writel(chip, reg, value) \
 181         snd_hdac_chip_writel(azx_bus(chip), reg, value)
 182 #define azx_readl(chip, reg) \
 183         snd_hdac_chip_readl(azx_bus(chip), reg)
 184 #define azx_writew(chip, reg, value) \
 185         snd_hdac_chip_writew(azx_bus(chip), reg, value)
 186 #define azx_readw(chip, reg) \
 187         snd_hdac_chip_readw(azx_bus(chip), reg)
 188 #define azx_writeb(chip, reg, value) \
 189         snd_hdac_chip_writeb(azx_bus(chip), reg, value)
 190 #define azx_readb(chip, reg) \
 191         snd_hdac_chip_readb(azx_bus(chip), reg)
 192
 193 #define azx_has_pm_runtime(chip) \
 194         ((chip)->driver_caps & AZX_DCAPS_PM_RUNTIME)
 195
 196 /* PCM setup */
 197 static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream)
 198 {
 199         return substream->runtime->private_data;
 200 }
 201 unsigned int azx_get_position(struct azx *chip, struct azx_dev *azx_dev);
 202 unsigned int azx_get_pos_lpib(struct azx *chip, struct azx_dev *azx_dev);
 203 unsigned int azx_get_pos_posbuf(struct azx *chip, struct azx_dev *azx_dev);
 204
 205 /* Stream control. */
 206 void azx_stop_all_streams(struct azx *chip);
 207
 208 /* Allocation functions. */
 209 #define azx_alloc_stream_pages(chip) \
 210         snd_hdac_bus_alloc_stream_pages(azx_bus(chip))
 211 #define azx_free_stream_pages(chip) \
 212         snd_hdac_bus_free_stream_pages(azx_bus(chip))
 213
 214 /* Low level azx interface */
 215 void azx_init_chip(struct azx *chip, bool full_reset);
 216 void azx_stop_chip(struct azx *chip);
 217 #define azx_enter_link_reset(chip) \
 218         snd_hdac_bus_enter_link_reset(azx_bus(chip))
 219 irqreturn_t azx_interrupt(int irq, void *dev_id);
 220
 221 /* Codec interface */
 222 int azx_bus_init(struct azx *chip, const char *model,
 223                  const struct hdac_io_ops *io_ops);
 224 int azx_probe_codecs(struct azx *chip, unsigned int max_slots);
 225 int azx_codec_configure(struct azx *chip);
 226 int azx_init_streams(struct azx *chip);
 227 void azx_free_streams(struct azx *chip);
 228
 229 #endif /* __SOUND_HDA_CONTROLLER_H */