1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Common functionality for the alsa driver code base for HD Audio. 4 */ 5 6 #ifndef __SOUND_HDA_CONTROLLER_H 7 #define __SOUND_HDA_CONTROLLER_H 8 9 #include <linux/timecounter.h> 10 #include <linux/interrupt.h> 11 #include <sound/core.h> 12 #include <sound/pcm.h> 13 #include <sound/initval.h> 14 #include <sound/hda_codec.h> 15 #include <sound/hda_register.h> 16 17 #define AZX_MAX_CODECS HDA_MAX_CODECS 18 #define AZX_DEFAULT_CODECS 4 19 20 /* driver quirks (capabilities) */ 21 /* bits 0-7 are used for indicating driver type */ 22 #define AZX_DCAPS_NO_TCSEL (1 << 8) /* No Intel TCSEL bit */ 23 #define AZX_DCAPS_NO_MSI (1 << 9) /* No MSI support */ 24 #define AZX_DCAPS_SNOOP_MASK (3 << 10) /* snoop type mask */ 25 #define AZX_DCAPS_SNOOP_OFF (1 << 12) /* snoop default off */ 26 #ifdef CONFIG_SND_HDA_I915 27 #define AZX_DCAPS_I915_COMPONENT (1 << 13) /* bind with i915 gfx */ 28 #else 29 #define AZX_DCAPS_I915_COMPONENT 0 /* NOP */ 30 #endif 31 /* 14 unused */ 32 #define AZX_DCAPS_CTX_WORKAROUND (1 << 15) /* X-Fi workaround */ 33 #define AZX_DCAPS_POSFIX_LPIB (1 << 16) /* Use LPIB as default */ 34 #define AZX_DCAPS_AMD_WORKAROUND (1 << 17) /* AMD-specific workaround */ 35 #define AZX_DCAPS_NO_64BIT (1 << 18) /* No 64bit address */ 36 #define AZX_DCAPS_SYNC_WRITE (1 << 19) /* sync each cmd write */ 37 #define AZX_DCAPS_OLD_SSYNC (1 << 20) /* Old SSYNC reg for ICH */ 38 #define AZX_DCAPS_NO_ALIGN_BUFSIZE (1 << 21) /* no buffer size alignment */ 39 /* 22 unused */ 40 #define AZX_DCAPS_4K_BDLE_BOUNDARY (1 << 23) /* BDLE in 4k boundary */ 41 /* 24 unused */ 42 #define AZX_DCAPS_COUNT_LPIB_DELAY (1 << 25) /* Take LPIB as delay */ 43 #define AZX_DCAPS_PM_RUNTIME (1 << 26) /* runtime PM support */ 44 /* 27 unused */ 45 #define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28) /* CORBRP clears itself after reset */ 46 #define AZX_DCAPS_NO_MSI64 (1 << 29) /* Stick to 32-bit MSIs */ 47 #define AZX_DCAPS_SEPARATE_STREAM_TAG (1 << 30) /* capture and playback use separate stream tag */ 48 49 enum { 50 AZX_SNOOP_TYPE_NONE, 51 AZX_SNOOP_TYPE_SCH, 52 AZX_SNOOP_TYPE_ATI, 53 AZX_SNOOP_TYPE_NVIDIA, 54 }; 55 56 struct azx_dev { 57 struct hdac_stream core; 58 59 unsigned int irq_pending:1; 60 /* 61 * For VIA: 62 * A flag to ensure DMA position is 0 63 * when link position is not greater than FIFO size 64 */ 65 unsigned int insufficient:1; 66 }; 67 68 #define azx_stream(dev) (&(dev)->core) 69 #define stream_to_azx_dev(s) container_of(s, struct azx_dev, core) 70 71 struct azx; 72 73 /* Functions to read/write to hda registers. */ 74 struct hda_controller_ops { 75 /* Disable msi if supported, PCI only */ 76 int (*disable_msi_reset_irq)(struct azx *); 77 void (*pcm_mmap_prepare)(struct snd_pcm_substream *substream, 78 struct vm_area_struct *area); 79 /* Check if current position is acceptable */ 80 int (*position_check)(struct azx *chip, struct azx_dev *azx_dev); 81 /* enable/disable the link power */ 82 int (*link_power)(struct azx *chip, bool enable); 83 }; 84 85 struct azx_pcm { 86 struct azx *chip; 87 struct snd_pcm *pcm; 88 struct hda_codec *codec; 89 struct hda_pcm *info; 90 struct list_head list; 91 }; 92 93 typedef unsigned int (*azx_get_pos_callback_t)(struct azx *, struct azx_dev *); 94 typedef int (*azx_get_delay_callback_t)(struct azx *, struct azx_dev *, unsigned int pos); 95 96 struct azx { 97 struct hda_bus bus; 98 99 struct snd_card *card; 100 struct pci_dev *pci; 101 int dev_index; 102 103 /* chip type specific */ 104 int driver_type; 105 unsigned int driver_caps; 106 int playback_streams; 107 int playback_index_offset; 108 int capture_streams; 109 int capture_index_offset; 110 int num_streams; 111 int jackpoll_interval; /* jack poll interval in jiffies */ 112 113 /* Register interaction. */ 114 const struct hda_controller_ops *ops; 115 116 /* position adjustment callbacks */ 117 azx_get_pos_callback_t get_position[2]; 118 azx_get_delay_callback_t get_delay[2]; 119 120 /* locks */ 121 struct mutex open_mutex; /* Prevents concurrent open/close operations */ 122 123 /* PCM */ 124 struct list_head pcm_list; /* azx_pcm list */ 125 126 /* HD codec */ 127 int codec_probe_mask; /* copied from probe_mask option */ 128 unsigned int beep_mode; 129 130 #ifdef CONFIG_SND_HDA_PATCH_LOADER 131 const struct firmware *fw; 132 #endif 133 134 /* flags */ 135 int bdl_pos_adj; 136 unsigned int running:1; 137 unsigned int fallback_to_single_cmd:1; 138 unsigned int single_cmd:1; 139 unsigned int msi:1; 140 unsigned int probing:1; /* codec probing phase */ 141 unsigned int snoop:1; 142 unsigned int uc_buffer:1; /* non-cached pages for stream buffers */ 143 unsigned int align_buffer_size:1; 144 unsigned int region_requested:1; 145 unsigned int disabled:1; /* disabled by vga_switcheroo */ 146 147 /* GTS present */ 148 unsigned int gts_present:1; 149 150 #ifdef CONFIG_SND_HDA_DSP_LOADER 151 struct azx_dev saved_azx_dev; 152 #endif 153 }; 154 155 #define azx_bus(chip) (&(chip)->bus.core) 156 #define bus_to_azx(_bus) container_of(_bus, struct azx, bus.core) 157 158 static inline bool azx_snoop(struct azx *chip) 159 { 160 return !IS_ENABLED(CONFIG_X86) || chip->snoop; 161 } 162 163 /* 164 * macros for easy use 165 */ 166 167 #define azx_writel(chip, reg, value) \ 168 snd_hdac_chip_writel(azx_bus(chip), reg, value) 169 #define azx_readl(chip, reg) \ 170 snd_hdac_chip_readl(azx_bus(chip), reg) 171 #define azx_writew(chip, reg, value) \ 172 snd_hdac_chip_writew(azx_bus(chip), reg, value) 173 #define azx_readw(chip, reg) \ 174 snd_hdac_chip_readw(azx_bus(chip), reg) 175 #define azx_writeb(chip, reg, value) \ 176 snd_hdac_chip_writeb(azx_bus(chip), reg, value) 177 #define azx_readb(chip, reg) \ 178 snd_hdac_chip_readb(azx_bus(chip), reg) 179 180 #define azx_has_pm_runtime(chip) \ 181 ((chip)->driver_caps & AZX_DCAPS_PM_RUNTIME) 182 183 /* PCM setup */ 184 static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream) 185 { 186 return substream->runtime->private_data; 187 } 188 unsigned int azx_get_position(struct azx *chip, struct azx_dev *azx_dev); 189 unsigned int azx_get_pos_lpib(struct azx *chip, struct azx_dev *azx_dev); 190 unsigned int azx_get_pos_posbuf(struct azx *chip, struct azx_dev *azx_dev); 191 192 /* Stream control. */ 193 void azx_stop_all_streams(struct azx *chip); 194 195 /* Allocation functions. */ 196 #define azx_alloc_stream_pages(chip) \ 197 snd_hdac_bus_alloc_stream_pages(azx_bus(chip)) 198 #define azx_free_stream_pages(chip) \ 199 snd_hdac_bus_free_stream_pages(azx_bus(chip)) 200 201 /* Low level azx interface */ 202 void azx_init_chip(struct azx *chip, bool full_reset); 203 void azx_stop_chip(struct azx *chip); 204 #define azx_enter_link_reset(chip) \ 205 snd_hdac_bus_enter_link_reset(azx_bus(chip)) 206 irqreturn_t azx_interrupt(int irq, void *dev_id); 207 208 /* Codec interface */ 209 int azx_bus_init(struct azx *chip, const char *model); 210 int azx_probe_codecs(struct azx *chip, unsigned int max_slots); 211 int azx_codec_configure(struct azx *chip); 212 int azx_init_streams(struct azx *chip); 213 void azx_free_streams(struct azx *chip); 214 215 #endif /* __SOUND_HDA_CONTROLLER_H */ 216