sound/hda/common/hda_controller.h - third_party/linux - Git at Google


            
            /* SPDX-License-Identifier: GPL-2.0-or-later */

            
            /*

            
             *  Common functionality for the alsa driver code base for HD Audio.

            
             */


            #ifndef __SOUND_HDA_CONTROLLER_H

            
            #define __SOUND_HDA_CONTROLLER_H


            #include <linux/timecounter.h>

            
            #include <linux/interrupt.h>

            
            #include <sound/core.h>

            
            #include <sound/pcm.h>

            
            #include <sound/initval.h>

            
            #include <sound/hda_codec.h>

            
            #include <sound/hda_register.h>


            #define AZX_MAX_CODECS		HDA_MAX_CODECS

            
            #define AZX_DEFAULT_CODECS	4


            /* driver quirks (capabilities) */

            
            /* bits 0-7 are used for indicating driver type */

            
            #define AZX_DCAPS_NO_TCSEL	(1 << 8)	/* No Intel TCSEL bit */

            
            #define AZX_DCAPS_NO_MSI	(1 << 9)	/* No MSI support */

            
            #define AZX_DCAPS_SNOOP_MASK	(3 << 10)	/* snoop type mask */

            
            #define AZX_DCAPS_SNOOP_OFF	(1 << 12)	/* snoop default off */

            
            #ifdef CONFIG_SND_HDA_I915

            
            #define AZX_DCAPS_I915_COMPONENT (1 << 13)	/* bind with i915 gfx */

            
            #else

            
            #define AZX_DCAPS_I915_COMPONENT 0		/* NOP */

            
            #endif

            
            /* 14 unused */

            
            #define AZX_DCAPS_CTX_WORKAROUND (1 << 15)	/* X-Fi workaround */

            
            #define AZX_DCAPS_POSFIX_LPIB	(1 << 16)	/* Use LPIB as default */

            
            #define AZX_DCAPS_AMD_WORKAROUND (1 << 17)	/* AMD-specific workaround */

            
            #define AZX_DCAPS_NO_64BIT	(1 << 18)	/* No 64bit address */

            
            /* 19 unused */

            
            #define AZX_DCAPS_OLD_SSYNC	(1 << 20)	/* Old SSYNC reg for ICH */

            
            #define AZX_DCAPS_NO_ALIGN_BUFSIZE (1 << 21)	/* no buffer size alignment */

            
            /* 22 unused */

            
            #define AZX_DCAPS_4K_BDLE_BOUNDARY (1 << 23)	/* BDLE in 4k boundary */

            
            /* 24 unused */

            
            #define AZX_DCAPS_COUNT_LPIB_DELAY  (1 << 25)	/* Take LPIB as delay */

            
            #define AZX_DCAPS_PM_RUNTIME	(1 << 26)	/* runtime PM support */

            
            #define AZX_DCAPS_RETRY_PROBE	(1 << 27)	/* retry probe if no codec is configured */

            
            #define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28)	/* CORBRP clears itself after reset */

            
            #define AZX_DCAPS_NO_MSI64      (1 << 29)	/* Stick to 32-bit MSIs */

            
            #define AZX_DCAPS_SEPARATE_STREAM_TAG	(1 << 30) /* capture and playback use separate stream tag */

            
            #define AZX_DCAPS_PIO_COMMANDS (1 << 31)	/* Use PIO instead of CORB for commands */


            enum {

            
            	AZX_SNOOP_TYPE_NONE,

            
            	AZX_SNOOP_TYPE_SCH,

            
            	AZX_SNOOP_TYPE_ATI,

            
            	AZX_SNOOP_TYPE_NVIDIA,

            
            };


            struct azx_dev {

            
            	struct hdac_stream core;


            	/*

            
            	 * For VIA:

            
            	 *  A flag to ensure DMA position is 0

            
            	 *  when link position is not greater than FIFO size

            
            	 */

            
            	bool insufficient;

            
            };


            #define azx_stream(dev)		(&(dev)->core)

            
            #define stream_to_azx_dev(s)	container_of(s, struct azx_dev, core)


            struct azx;


            /* Functions to read/write to hda registers. */

            
            struct hda_controller_ops {

            
            	/* Disable msi if supported, PCI only */

            
            	int (*disable_msi_reset_irq)(struct azx *);

            
            	/* Check if current position is acceptable */

            
            	int (*position_check)(struct azx *chip, struct azx_dev *azx_dev);

            
            	/* enable/disable the link power */

            
            	int (*link_power)(struct azx *chip, bool enable);

            
            	/* additional hook for PCM */

            
            	void (*pcm_close)(struct azx *chip, struct azx_dev *azx_dev);

            
            };


            struct azx_pcm {

            
            	struct azx *chip;

            
            	struct snd_pcm *pcm;

            
            	struct hda_codec *codec;

            
            	struct hda_pcm *info;

            
            	struct list_head list;

            
            };


            typedef unsigned int (*azx_get_pos_callback_t)(struct azx *, struct azx_dev *);

            
            typedef int (*azx_get_delay_callback_t)(struct azx *, struct azx_dev *, unsigned int pos);


            struct azx {

            
            	struct hda_bus bus;


            	struct snd_card *card;

            
            	struct pci_dev *pci;

            
            	int dev_index;


            	/* chip type specific */

            
            	int driver_type;

            
            	unsigned int driver_caps;

            
            	int playback_streams;

            
            	int playback_index_offset;

            
            	int capture_streams;

            
            	int capture_index_offset;

            
            	int num_streams;

            
            	int jackpoll_interval; /* jack poll interval in jiffies */


            	/* Register interaction. */

            
            	const struct hda_controller_ops *ops;


            	/* position adjustment callbacks */

            
            	azx_get_pos_callback_t get_position[2];

            
            	azx_get_delay_callback_t get_delay[2];


            	/* locks */

            
            	struct mutex open_mutex; /* Prevents concurrent open/close operations */


            	/* PCM */

            
            	struct list_head pcm_list; /* azx_pcm list */


            	/* HD codec */

            
            	int  codec_probe_mask; /* copied from probe_mask option */

            
            	unsigned int beep_mode;

            
            	bool ctl_dev_id;


            	/* flags */

            
            	int bdl_pos_adj;

            
            	unsigned int running:1;

            
            	unsigned int fallback_to_single_cmd:1;

            
            	unsigned int single_cmd:1;

            
            	unsigned int msi:1;

            
            	unsigned int probing:1; /* codec probing phase */

            
            	unsigned int snoop:1;

            
            	unsigned int uc_buffer:1; /* non-cached pages for stream buffers */

            
            	unsigned int align_buffer_size:1;

            
            	unsigned int disabled:1; /* disabled by vga_switcheroo */

            
            	unsigned int pm_prepared:1;


            	/* GTS present */

            
            	unsigned int gts_present:1;


            #ifdef CONFIG_SND_HDA_DSP_LOADER

            
            	struct azx_dev saved_azx_dev;

            
            #endif

            
            };


            #define azx_bus(chip)	(&(chip)->bus.core)

            
            #define bus_to_azx(_bus)	container_of(_bus, struct azx, bus.core)


            static inline bool azx_snoop(struct azx *chip)

            
            {

            
            	return !IS_ENABLED(CONFIG_X86) || chip->snoop;

            
            }


            /*

            
             * macros for easy use

            
             */


            #define azx_writel(chip, reg, value) \

            
            	snd_hdac_chip_writel(azx_bus(chip), reg, value)

            
            #define azx_readl(chip, reg) \

            
            	snd_hdac_chip_readl(azx_bus(chip), reg)

            
            #define azx_writew(chip, reg, value) \

            
            	snd_hdac_chip_writew(azx_bus(chip), reg, value)

            
            #define azx_readw(chip, reg) \

            
            	snd_hdac_chip_readw(azx_bus(chip), reg)

            
            #define azx_writeb(chip, reg, value) \

            
            	snd_hdac_chip_writeb(azx_bus(chip), reg, value)

            
            #define azx_readb(chip, reg) \

            
            	snd_hdac_chip_readb(azx_bus(chip), reg)


            #define azx_has_pm_runtime(chip) \

            
            	((chip)->driver_caps & AZX_DCAPS_PM_RUNTIME)


            /* PCM setup */

            
            static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream)

            
            {

            
            	return substream->runtime->private_data;

            
            }

            
            unsigned int azx_get_position(struct azx *chip, struct azx_dev *azx_dev);

            
            unsigned int azx_get_pos_lpib(struct azx *chip, struct azx_dev *azx_dev);

            
            unsigned int azx_get_pos_posbuf(struct azx *chip, struct azx_dev *azx_dev);


            /* Stream control. */

            
            void azx_stop_all_streams(struct azx *chip);


            /* Allocation functions. */

            
            #define azx_alloc_stream_pages(chip) \

            
            	snd_hdac_bus_alloc_stream_pages(azx_bus(chip))

            
            #define azx_free_stream_pages(chip) \

            
            	snd_hdac_bus_free_stream_pages(azx_bus(chip))


            /* Low level azx interface */

            
            void azx_init_chip(struct azx *chip, bool full_reset);

            
            void azx_stop_chip(struct azx *chip);

            
            #define azx_enter_link_reset(chip) \

            
            	snd_hdac_bus_enter_link_reset(azx_bus(chip))

            
            irqreturn_t azx_interrupt(int irq, void *dev_id);


            /* Codec interface */

            
            int azx_bus_init(struct azx *chip, const char *model);

            
            int azx_probe_codecs(struct azx *chip, unsigned int max_slots);

            
            int azx_codec_configure(struct azx *chip);

            
            int azx_init_streams(struct azx *chip);

            
            void azx_add_stream(struct azx *chip, struct azx_dev *s, int idx, int tag);

            
            void azx_free_streams(struct azx *chip);


            static inline int azx_stream_direction(struct azx *chip, unsigned char index)

            
            {

            
            	if (index >= chip->capture_index_offset &&

            
            	    index < chip->capture_index_offset + chip->capture_streams)

            
            		return SNDRV_PCM_STREAM_CAPTURE;

            
            	return SNDRV_PCM_STREAM_PLAYBACK;

            
            }


            #endif /* __SOUND_HDA_CONTROLLER_H */
	/* SPDX-License-Identifier: GPL-2.0-or-later */
	/*
	* Common functionality for the alsa driver code base for HD Audio.
	*/

	#ifndef __SOUND_HDA_CONTROLLER_H
	#define __SOUND_HDA_CONTROLLER_H

	#include <linux/timecounter.h>
	#include <linux/interrupt.h>
	#include <sound/core.h>
	#include <sound/pcm.h>
	#include <sound/initval.h>
	#include <sound/hda_codec.h>
	#include <sound/hda_register.h>

	#define AZX_MAX_CODECS HDA_MAX_CODECS
	#define AZX_DEFAULT_CODECS 4

	/* driver quirks (capabilities) */
	/* bits 0-7 are used for indicating driver type */
	#define AZX_DCAPS_NO_TCSEL (1 << 8) /* No Intel TCSEL bit */
	#define AZX_DCAPS_NO_MSI (1 << 9) /* No MSI support */
	#define AZX_DCAPS_SNOOP_MASK (3 << 10) /* snoop type mask */
	#define AZX_DCAPS_SNOOP_OFF (1 << 12) /* snoop default off */
	#ifdef CONFIG_SND_HDA_I915
	#define AZX_DCAPS_I915_COMPONENT (1 << 13) /* bind with i915 gfx */
	#else
	#define AZX_DCAPS_I915_COMPONENT 0 /* NOP */
	#endif
	/* 14 unused */
	#define AZX_DCAPS_CTX_WORKAROUND (1 << 15) /* X-Fi workaround */
	#define AZX_DCAPS_POSFIX_LPIB (1 << 16) /* Use LPIB as default */
	#define AZX_DCAPS_AMD_WORKAROUND (1 << 17) /* AMD-specific workaround */
	#define AZX_DCAPS_NO_64BIT (1 << 18) /* No 64bit address */
	/* 19 unused */
	#define AZX_DCAPS_OLD_SSYNC (1 << 20) /* Old SSYNC reg for ICH */
	#define AZX_DCAPS_NO_ALIGN_BUFSIZE (1 << 21) /* no buffer size alignment */
	/* 22 unused */
	#define AZX_DCAPS_4K_BDLE_BOUNDARY (1 << 23) /* BDLE in 4k boundary */
	/* 24 unused */
	#define AZX_DCAPS_COUNT_LPIB_DELAY (1 << 25) /* Take LPIB as delay */
	#define AZX_DCAPS_PM_RUNTIME (1 << 26) /* runtime PM support */
	#define AZX_DCAPS_RETRY_PROBE (1 << 27) /* retry probe if no codec is configured */
	#define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28) /* CORBRP clears itself after reset */
	#define AZX_DCAPS_NO_MSI64 (1 << 29) /* Stick to 32-bit MSIs */
	#define AZX_DCAPS_SEPARATE_STREAM_TAG (1 << 30) /* capture and playback use separate stream tag */
	#define AZX_DCAPS_PIO_COMMANDS (1 << 31) /* Use PIO instead of CORB for commands */

	enum {
	AZX_SNOOP_TYPE_NONE,
	AZX_SNOOP_TYPE_SCH,
	AZX_SNOOP_TYPE_ATI,
	AZX_SNOOP_TYPE_NVIDIA,
	};

	struct azx_dev {
	struct hdac_stream core;

	/*
	* For VIA:
	* A flag to ensure DMA position is 0
	* when link position is not greater than FIFO size
	*/
	bool insufficient;
	};

	#define azx_stream(dev) (&(dev)->core)
	#define stream_to_azx_dev(s) container_of(s, struct azx_dev, core)

	struct azx;

	/* Functions to read/write to hda registers. */
	struct hda_controller_ops {
	/* Disable msi if supported, PCI only */
	int (disable_msi_reset_irq)(struct azx );
	/* Check if current position is acceptable */
	int (position_check)(struct azx chip, struct azx_dev *azx_dev);
	/* enable/disable the link power */
	int (link_power)(struct azx chip, bool enable);
	/* additional hook for PCM */
	void (pcm_close)(struct azx chip, struct azx_dev *azx_dev);
	};

	struct azx_pcm {
	struct azx *chip;
	struct snd_pcm *pcm;
	struct hda_codec *codec;
	struct hda_pcm *info;
	struct list_head list;
	};

	typedef unsigned int (azx_get_pos_callback_t)(struct azx , struct azx_dev *);
	typedef int (azx_get_delay_callback_t)(struct azx , struct azx_dev *, unsigned int pos);

	struct azx {
	struct hda_bus bus;

	struct snd_card *card;
	struct pci_dev *pci;
	int dev_index;

	/* chip type specific */
	int driver_type;
	unsigned int driver_caps;
	int playback_streams;
	int playback_index_offset;
	int capture_streams;
	int capture_index_offset;
	int num_streams;
	int jackpoll_interval; /* jack poll interval in jiffies */

	/* Register interaction. */
	const struct hda_controller_ops *ops;

	/* position adjustment callbacks */
	azx_get_pos_callback_t get_position[2];
	azx_get_delay_callback_t get_delay[2];

	/* locks */
	struct mutex open_mutex; /* Prevents concurrent open/close operations */

	/* PCM */
	struct list_head pcm_list; /* azx_pcm list */

	/* HD codec */
	int codec_probe_mask; /* copied from probe_mask option */
	unsigned int beep_mode;
	bool ctl_dev_id;

	/* flags */
	int bdl_pos_adj;
	unsigned int running:1;
	unsigned int fallback_to_single_cmd:1;
	unsigned int single_cmd:1;
	unsigned int msi:1;
	unsigned int probing:1; /* codec probing phase */
	unsigned int snoop:1;
	unsigned int uc_buffer:1; /* non-cached pages for stream buffers */
	unsigned int align_buffer_size:1;
	unsigned int disabled:1; /* disabled by vga_switcheroo */
	unsigned int pm_prepared:1;

	/* GTS present */
	unsigned int gts_present:1;

	#ifdef CONFIG_SND_HDA_DSP_LOADER
	struct azx_dev saved_azx_dev;
	#endif
	};

	#define azx_bus(chip) (&(chip)->bus.core)
	#define bus_to_azx(_bus) container_of(_bus, struct azx, bus.core)

	static inline bool azx_snoop(struct azx *chip)
	{
	return !IS_ENABLED(CONFIG_X86) \|\| chip->snoop;
	}

	/*
	* macros for easy use
	*/

	#define azx_writel(chip, reg, value) \
	snd_hdac_chip_writel(azx_bus(chip), reg, value)
	#define azx_readl(chip, reg) \
	snd_hdac_chip_readl(azx_bus(chip), reg)
	#define azx_writew(chip, reg, value) \
	snd_hdac_chip_writew(azx_bus(chip), reg, value)
	#define azx_readw(chip, reg) \
	snd_hdac_chip_readw(azx_bus(chip), reg)
	#define azx_writeb(chip, reg, value) \
	snd_hdac_chip_writeb(azx_bus(chip), reg, value)
	#define azx_readb(chip, reg) \
	snd_hdac_chip_readb(azx_bus(chip), reg)

	#define azx_has_pm_runtime(chip) \
	((chip)->driver_caps & AZX_DCAPS_PM_RUNTIME)

	/* PCM setup */
	static inline struct azx_dev get_azx_dev(struct snd_pcm_substream substream)
	{
	return substream->runtime->private_data;
	}
	unsigned int azx_get_position(struct azx chip, struct azx_dev azx_dev);
	unsigned int azx_get_pos_lpib(struct azx chip, struct azx_dev azx_dev);
	unsigned int azx_get_pos_posbuf(struct azx chip, struct azx_dev azx_dev);

	/* Stream control. */
	void azx_stop_all_streams(struct azx *chip);

	/* Allocation functions. */
	#define azx_alloc_stream_pages(chip) \
	snd_hdac_bus_alloc_stream_pages(azx_bus(chip))
	#define azx_free_stream_pages(chip) \
	snd_hdac_bus_free_stream_pages(azx_bus(chip))

	/* Low level azx interface */
	void azx_init_chip(struct azx *chip, bool full_reset);
	void azx_stop_chip(struct azx *chip);
	#define azx_enter_link_reset(chip) \
	snd_hdac_bus_enter_link_reset(azx_bus(chip))
	irqreturn_t azx_interrupt(int irq, void *dev_id);

	/* Codec interface */
	int azx_bus_init(struct azx chip, const char model);
	int azx_probe_codecs(struct azx *chip, unsigned int max_slots);
	int azx_codec_configure(struct azx *chip);
	int azx_init_streams(struct azx *chip);
	void azx_add_stream(struct azx chip, struct azx_dev s, int idx, int tag);
	void azx_free_streams(struct azx *chip);

	static inline int azx_stream_direction(struct azx *chip, unsigned char index)
	{
	if (index >= chip->capture_index_offset &&
	index < chip->capture_index_offset + chip->capture_streams)
	return SNDRV_PCM_STREAM_CAPTURE;
	return SNDRV_PCM_STREAM_PLAYBACK;
	}

	#endif /* __SOUND_HDA_CONTROLLER_H */