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#define AZX_DCAPS_RIRB_DELAY (1 << 13) /* Long delay in read loop */ 36#define AZX_DCAPS_RIRB_PRE_DELAY (1 << 14) /* Put a delay before read */ 37#define AZX_DCAPS_CTX_WORKAROUND (1 << 15) /* X-Fi workaround */ 38#define AZX_DCAPS_POSFIX_LPIB (1 << 16) /* Use LPIB as default */ 39#define AZX_DCAPS_POSFIX_VIA (1 << 17) /* Use VIACOMBO as default */ 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#define AZX_DCAPS_REVERSE_ASSIGN (1 << 24) /* Assign devices in reverse order */ 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#define AZX_DCAPS_I915_POWERWELL (1 << 27) /* HSW i915 powerwell support */ 50#define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28) /* CORBRP clears itself after reset */ 51#define AZX_DCAPS_NO_MSI64 (1 << 29) /* Stick to 32-bit MSIs */ 52#define AZX_DCAPS_SEPARATE_STREAM_TAG (1 << 30) /* capture and playback use separate stream tag */ 53 54enum { 55 AZX_SNOOP_TYPE_NONE, 56 AZX_SNOOP_TYPE_SCH, 57 AZX_SNOOP_TYPE_ATI, 58 AZX_SNOOP_TYPE_NVIDIA, 59}; 60 61struct azx_dev { 62 struct hdac_stream core; 63 64 unsigned int irq_pending:1; 65 /* 66 * For VIA: 67 * A flag to ensure DMA position is 0 68 * when link position is not greater than FIFO size 69 */ 70 unsigned int insufficient:1; 71 unsigned int wc_marked:1; 72}; 73 74#define azx_stream(dev) (&(dev)->core) 75#define stream_to_azx_dev(s) container_of(s, struct azx_dev, core) 76 77struct azx; 78 79/* Functions to read/write to hda registers. */ 80struct hda_controller_ops { 81 /* Disable msi if supported, PCI only */ 82 int (*disable_msi_reset_irq)(struct azx *); 83 int (*substream_alloc_pages)(struct azx *chip, 84 struct snd_pcm_substream *substream, 85 size_t size); 86 int (*substream_free_pages)(struct azx *chip, 87 struct snd_pcm_substream *substream); 88 void (*pcm_mmap_prepare)(struct snd_pcm_substream *substream, 89 struct vm_area_struct *area); 90 /* Check if current position is acceptable */ 91 int (*position_check)(struct azx *chip, struct azx_dev *azx_dev); 92 /* enable/disable the link power */ 93 int (*link_power)(struct azx *chip, bool enable); 94}; 95 96struct azx_pcm { 97 struct azx *chip; 98 struct snd_pcm *pcm; 99 struct hda_codec *codec; 100 struct hda_pcm *info; 101 struct list_head list; 102}; 103 104typedef unsigned int (*azx_get_pos_callback_t)(struct azx *, struct azx_dev *); 105typedef int (*azx_get_delay_callback_t)(struct azx *, struct azx_dev *, unsigned int pos); 106 107struct azx { 108 struct hda_bus bus; 109 110 struct snd_card *card; 111 struct pci_dev *pci; 112 int dev_index; 113 114 /* chip type specific */ 115 int driver_type; 116 unsigned int driver_caps; 117 int playback_streams; 118 int playback_index_offset; 119 int capture_streams; 120 int capture_index_offset; 121 int num_streams; 122 const int *jackpoll_ms; /* per-card jack poll interval */ 123 124 /* Register interaction. */ 125 const struct hda_controller_ops *ops; 126 127 /* position adjustment callbacks */ 128 azx_get_pos_callback_t get_position[2]; 129 azx_get_delay_callback_t get_delay[2]; 130 131 /* locks */ 132 struct mutex open_mutex; /* Prevents concurrent open/close operations */ 133 134 /* PCM */ 135 struct list_head pcm_list; /* azx_pcm list */ 136 137 /* HD codec */ 138 int codec_probe_mask; /* copied from probe_mask option */ 139 unsigned int beep_mode; 140 141#ifdef CONFIG_SND_HDA_PATCH_LOADER 142 const struct firmware *fw; 143#endif 144 145 /* flags */ 146 const int *bdl_pos_adj; 147 int poll_count; 148 unsigned int running:1; 149 unsigned int single_cmd:1; 150 unsigned int polling_mode:1; 151 unsigned int msi:1; 152 unsigned int probing:1; /* codec probing phase */ 153 unsigned int snoop:1; 154 unsigned int align_buffer_size:1; 155 unsigned int region_requested:1; 156 unsigned int disabled:1; /* disabled by vga_switcheroo */ 157 158#ifdef CONFIG_SND_HDA_DSP_LOADER 159 struct azx_dev saved_azx_dev; 160#endif 161}; 162 163#define azx_bus(chip) (&(chip)->bus.core) 164#define bus_to_azx(_bus) container_of(_bus, struct azx, bus.core) 165 166#ifdef CONFIG_X86 167#define azx_snoop(chip) ((chip)->snoop) 168#else 169#define azx_snoop(chip) true 170#endif 171 172/* 173 * macros for easy use 174 */ 175 176#define azx_writel(chip, reg, value) \ 177 snd_hdac_chip_writel(azx_bus(chip), reg, value) 178#define azx_readl(chip, reg) \ 179 snd_hdac_chip_readl(azx_bus(chip), reg) 180#define azx_writew(chip, reg, value) \ 181 snd_hdac_chip_writew(azx_bus(chip), reg, value) 182#define azx_readw(chip, reg) \ 183 snd_hdac_chip_readw(azx_bus(chip), reg) 184#define azx_writeb(chip, reg, value) \ 185 snd_hdac_chip_writeb(azx_bus(chip), reg, value) 186#define azx_readb(chip, reg) \ 187 snd_hdac_chip_readb(azx_bus(chip), reg) 188 189#define azx_has_pm_runtime(chip) \ 190 ((chip)->driver_caps & AZX_DCAPS_PM_RUNTIME) 191 192/* PCM setup */ 193static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream) 194{ 195 return substream->runtime->private_data; 196} 197unsigned int azx_get_position(struct azx *chip, struct azx_dev *azx_dev); 198unsigned int azx_get_pos_lpib(struct azx *chip, struct azx_dev *azx_dev); 199unsigned int azx_get_pos_posbuf(struct azx *chip, struct azx_dev *azx_dev); 200 201/* Stream control. */ 202void azx_stop_all_streams(struct azx *chip); 203 204/* Allocation functions. */ 205#define azx_alloc_stream_pages(chip) \ 206 snd_hdac_bus_alloc_stream_pages(azx_bus(chip)) 207#define azx_free_stream_pages(chip) \ 208 snd_hdac_bus_free_stream_pages(azx_bus(chip)) 209 210/* Low level azx interface */ 211void azx_init_chip(struct azx *chip, bool full_reset); 212void azx_stop_chip(struct azx *chip); 213#define azx_enter_link_reset(chip) \ 214 snd_hdac_bus_enter_link_reset(azx_bus(chip)) 215irqreturn_t azx_interrupt(int irq, void *dev_id); 216 217/* Codec interface */ 218int azx_bus_init(struct azx *chip, const char *model, 219 const struct hdac_io_ops *io_ops); 220int azx_probe_codecs(struct azx *chip, unsigned int max_slots); 221int azx_codec_configure(struct azx *chip); 222int azx_init_streams(struct azx *chip); 223void azx_free_streams(struct azx *chip); 224 225#endif /* __SOUND_HDA_CONTROLLER_H */ 226