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Data Structures
struct	dma_ops

Macros
#define	DMA_ATTR_BUFFER_ALIGNMENT 0

#define	DMA_ATTR_COPY_ALIGNMENT 1

#define	DMA_ATTR_BUFFER_ADDRESS_ALIGNMENT 2

#define	DMA_ATTR_BUFFER_PERIOD_COUNT 3

#define	DMA_DIR_MEM_TO_MEM SOF_DMA_DIR_MEM_TO_MEM

#define	DMA_DIR_HMEM_TO_LMEM SOF_DMA_DIR_HMEM_TO_LMEM

#define	DMA_DIR_LMEM_TO_HMEM SOF_DMA_DIR_LMEM_TO_HMEM

#define	DMA_DIR_MEM_TO_DEV SOF_DMA_DIR_MEM_TO_DEV

#define	DMA_DIR_DEV_TO_MEM SOF_DMA_DIR_DEV_TO_MEM

#define	DMA_DIR_DEV_TO_DEV SOF_DMA_DIR_DEV_TO_DEV

#define	DMA_COPY_BLOCKING SOF_DMA_COPY_BLOCKING

#define	DMA_COPY_ONE_SHOT SOF_DMA_COPY_ONE_SHOT

#define	DMA_DEV_HOST SOF_DMA_DEV_HOST

#define	DMA_ACCESS_EXCLUSIVE SOF_DMA_ACCESS_EXCLUSIVE

#define	DMA_ACCESS_SHARED SOF_DMA_ACCESS_SHARED

#define	DMA_CHAN_INVALID SOF_DMA_CHAN_INVALID

#define	DMA_CORE_INVALID SOF_DMA_CORE_INVALID

#define	dma_set_drvdata(dma, data) (dma->priv_data = data)

#define	dma_get_drvdata(dma) dma->priv_data

#define	dma_base(dma) dma->plat_data.base

#define	dma_irq(dma) dma->plat_data.irq

#define	dma_irq_name(dma) dma->plat_data.irq_name

#define	dma_chan_size(dma) dma->plat_data.chan_size

#define	dma_chan_base(dma, chan) (dma->plat_data.base + chan * dma->plat_data.chan_size)

#define	dma_chan_get_data(chan) ((chan)->priv_data)

#define	dma_chan_set_data(chan, data) ((chan)->priv_data = data)

Enumerations
enum	dma_cb_status { DMA_CB_STATUS_RELOAD = 0 , DMA_CB_STATUS_END }

enum	dma_irq_cmd { DMA_IRQ_STATUS_GET = 0 , DMA_IRQ_CLEAR , DMA_IRQ_MASK , DMA_IRQ_UNMASK }

Functions
struct dma *	dma_get (uint32_t dir, uint32_t caps, uint32_t dev, uint32_t flags)

void	dma_put (struct dma *dma)

static struct dma_chan_data *	dma_channel_get_legacy (struct dma *dma, int req_channel)

static void	dma_channel_put_legacy (struct dma_chan_data *channel)

static int	dma_start_legacy (struct dma_chan_data *channel)

static int	dma_stop_legacy (struct dma_chan_data *channel)

static int	dma_stop_delayed_legacy (struct dma_chan_data *channel)

static int	dma_copy_legacy (struct dma_chan_data *channel, int bytes, uint32_t flags)
	Perform a legacy DMA copy operation on a channel.

static int	dma_pause_legacy (struct dma_chan_data *channel)

static int	dma_release_legacy (struct dma_chan_data *channel)

static int	dma_status_legacy (struct dma_chan_data channel, struct dma_chan_status status, uint8_t direction)

static int	dma_set_config_legacy (struct dma_chan_data channel, struct dma_sg_config config)

static int	dma_probe_legacy (struct dma *dma)

static int	dma_remove_legacy (struct dma *dma)

static int	dma_get_data_size_legacy (struct dma_chan_data channel, uint32_t avail, uint32_t *free)

static int	dma_get_attribute_legacy (struct dma dma, uint32_t type, uint32_t value)

static int	dma_interrupt_legacy (struct dma_chan_data *channel, enum dma_irq_cmd cmd)

static uint32_t	dma_reg_read (struct dma *dma, uint32_t reg)

static uint16_t	dma_reg_read16 (struct dma *dma, uint32_t reg)

static void	dma_reg_write (struct dma *dma, uint32_t reg, uint32_t value)

static void	dma_reg_write16 (struct dma *dma, uint32_t reg, uint16_t value)

static void	dma_reg_update_bits (struct dma *dma, uint32_t reg, uint32_t mask, uint32_t value)

static uint32_t	dma_chan_reg_read (struct dma_chan_data *channel, uint32_t reg)

static uint16_t	dma_chan_reg_read16 (struct dma_chan_data *channel, uint32_t reg)

static void	dma_chan_reg_write (struct dma_chan_data *channel, uint32_t reg, uint32_t value)

static void	dma_chan_reg_write16 (struct dma_chan_data *channel, uint32_t reg, uint16_t value)

static void	dma_chan_reg_update_bits (struct dma_chan_data *channel, uint32_t reg, uint32_t mask, uint32_t value)

static void	dma_chan_reg_update_bits16 (struct dma_chan_data *channel, uint32_t reg, uint16_t mask, uint16_t value)

int	dma_copy_new (struct dma_copy *dc)

static void	dma_copy_free (struct dma_copy *dc)

int	dma_copy_from_host (struct dma_copy dc, struct dma_sg_config host_sg, int32_t host_offset, void *local_ptr, int32_t size)

int	dma_copy_from_host_nowait (struct dma_copy dc, struct dma_sg_config host_sg, int32_t host_offset, void *local_ptr, int32_t size)

int	dma_copy_to_host (struct dma_copy dc, struct dma_sg_config host_sg, int32_t host_offset, void *local_ptr, int32_t size)

int	dma_copy_to_host_nowait (struct dma_copy dc, struct dma_sg_config host_sg, int32_t host_offset, void *local_ptr, int32_t size)

int	dma_copy_set_stream_tag (struct dma_copy *dc, uint32_t stream_tag)

Macro Definition Documentation

◆ DMA_ACCESS_EXCLUSIVE

#define DMA_ACCESS_EXCLUSIVE SOF_DMA_ACCESS_EXCLUSIVE

◆ DMA_ACCESS_SHARED

#define DMA_ACCESS_SHARED SOF_DMA_ACCESS_SHARED

◆ DMA_ATTR_BUFFER_ADDRESS_ALIGNMENT

#define DMA_ATTR_BUFFER_ADDRESS_ALIGNMENT 2

◆ DMA_ATTR_BUFFER_ALIGNMENT

#define DMA_ATTR_BUFFER_ALIGNMENT 0

◆ DMA_ATTR_BUFFER_PERIOD_COUNT

#define DMA_ATTR_BUFFER_PERIOD_COUNT 3

◆ DMA_ATTR_COPY_ALIGNMENT

#define DMA_ATTR_COPY_ALIGNMENT 1

◆ dma_base

#define dma_base ( dma ) dma->plat_data.base

◆ dma_chan_base

#define dma_chan_base	(	dma,
		chan
	)	(dma->plat_data.base + chan * dma->plat_data.chan_size)

◆ dma_chan_get_data

#define dma_chan_get_data ( chan ) ((chan)->priv_data)

◆ DMA_CHAN_INVALID

#define DMA_CHAN_INVALID SOF_DMA_CHAN_INVALID

◆ dma_chan_set_data

#define dma_chan_set_data	(	chan,
		data
	)	((chan)->priv_data = data)

◆ dma_chan_size

#define dma_chan_size ( dma ) dma->plat_data.chan_size

◆ DMA_COPY_BLOCKING

#define DMA_COPY_BLOCKING SOF_DMA_COPY_BLOCKING

◆ DMA_COPY_ONE_SHOT

#define DMA_COPY_ONE_SHOT SOF_DMA_COPY_ONE_SHOT

◆ DMA_CORE_INVALID

#define DMA_CORE_INVALID SOF_DMA_CORE_INVALID

◆ DMA_DEV_HOST

#define DMA_DEV_HOST SOF_DMA_DEV_HOST

◆ DMA_DIR_DEV_TO_DEV

#define DMA_DIR_DEV_TO_DEV SOF_DMA_DIR_DEV_TO_DEV

◆ DMA_DIR_DEV_TO_MEM

#define DMA_DIR_DEV_TO_MEM SOF_DMA_DIR_DEV_TO_MEM

◆ DMA_DIR_HMEM_TO_LMEM

#define DMA_DIR_HMEM_TO_LMEM SOF_DMA_DIR_HMEM_TO_LMEM

◆ DMA_DIR_LMEM_TO_HMEM

#define DMA_DIR_LMEM_TO_HMEM SOF_DMA_DIR_LMEM_TO_HMEM

◆ DMA_DIR_MEM_TO_DEV

#define DMA_DIR_MEM_TO_DEV SOF_DMA_DIR_MEM_TO_DEV

◆ DMA_DIR_MEM_TO_MEM

#define DMA_DIR_MEM_TO_MEM SOF_DMA_DIR_MEM_TO_MEM

◆ dma_get_drvdata

#define dma_get_drvdata ( dma ) dma->priv_data

◆ dma_irq

#define dma_irq ( dma ) dma->plat_data.irq

◆ dma_irq_name

#define dma_irq_name ( dma ) dma->plat_data.irq_name

◆ dma_set_drvdata

#define dma_set_drvdata	(	dma,
		data
	)	(dma->priv_data = data)

Enumeration Type Documentation

◆ dma_cb_status

enum dma_cb_status

Enumerator
DMA_CB_STATUS_RELOAD
DMA_CB_STATUS_END

◆ dma_irq_cmd

enum dma_irq_cmd

Enumerator
DMA_IRQ_STATUS_GET
DMA_IRQ_CLEAR
DMA_IRQ_MASK
DMA_IRQ_UNMASK

Function Documentation

◆ dma_chan_reg_read()

static uint32_t dma_chan_reg_read	(	struct dma_chan_data *	channel,
		uint32_t	reg
	)

inlinestatic

◆ dma_chan_reg_read16()

static uint16_t dma_chan_reg_read16	(	struct dma_chan_data *	channel,
		uint32_t	reg
	)

inlinestatic

◆ dma_chan_reg_update_bits()

static void dma_chan_reg_update_bits	(	struct dma_chan_data *	channel,
		uint32_t	reg,
		uint32_t	mask,
		uint32_t	value
	)

inlinestatic

◆ dma_chan_reg_update_bits16()

static void dma_chan_reg_update_bits16	(	struct dma_chan_data *	channel,
		uint32_t	reg,
		uint16_t	mask,
		uint16_t	value
	)

inlinestatic

◆ dma_chan_reg_write()

static void dma_chan_reg_write	(	struct dma_chan_data *	channel,
		uint32_t	reg,
		uint32_t	value
	)

inlinestatic

◆ dma_chan_reg_write16()

static void dma_chan_reg_write16	(	struct dma_chan_data *	channel,
		uint32_t	reg,
		uint16_t	value
	)

inlinestatic

◆ dma_channel_get_legacy()

static struct dma_chan_data * dma_channel_get_legacy	(	struct dma *	dma,
		int	req_channel
	)

inlinestatic

◆ dma_channel_put_legacy()

static void dma_channel_put_legacy ( struct dma_chan_data * channel )

inlinestatic

◆ dma_copy_free()

static void dma_copy_free ( struct dma_copy * dc )

inlinestatic

◆ dma_copy_from_host()

int dma_copy_from_host	(	struct dma_copy *	dc,
		struct dma_sg_config *	host_sg,
		int32_t	host_offset,
		void *	local_ptr,
		int32_t	size
	)

◆ dma_copy_from_host_nowait()

int dma_copy_from_host_nowait	(	struct dma_copy *	dc,
		struct dma_sg_config *	host_sg,
		int32_t	host_offset,
		void *	local_ptr,
		int32_t	size
	)

◆ dma_copy_legacy()

static int dma_copy_legacy	(	struct dma_chan_data *	channel,
		int	bytes,
		uint32_t	flags
	)

inlinestatic

Perform a legacy DMA copy operation on a channel.

Parameters

channel	DMA channel data.
bytes	Number of bytes to transfer.
flags	Transfer flags.

Returns: 0 on success, negative error code on failure.

◆ dma_copy_new()

int dma_copy_new ( struct dma_copy * dc )

◆ dma_copy_set_stream_tag()

int dma_copy_set_stream_tag	(	struct dma_copy *	dc,
		uint32_t	stream_tag
	)

◆ dma_copy_to_host()

int dma_copy_to_host	(	struct dma_copy *	dc,
		struct dma_sg_config *	host_sg,
		int32_t	host_offset,
		void *	local_ptr,
		int32_t	size
	)

◆ dma_copy_to_host_nowait()

int dma_copy_to_host_nowait	(	struct dma_copy *	dc,
		struct dma_sg_config *	host_sg,
		int32_t	host_offset,
		void *	local_ptr,
		int32_t	size
	)

◆ dma_get()

struct dma * dma_get	(	uint32_t	dir,
		uint32_t	caps,
		uint32_t	dev,
		uint32_t	flags
	)

◆ dma_get_attribute_legacy()

static int dma_get_attribute_legacy	(	struct dma *	dma,
		uint32_t	type,
		uint32_t *	value
	)

inlinestatic

◆ dma_get_data_size_legacy()

static int dma_get_data_size_legacy	(	struct dma_chan_data *	channel,
		uint32_t *	avail,
		uint32_t *	free
	)

inlinestatic

◆ dma_interrupt_legacy()

static int dma_interrupt_legacy	(	struct dma_chan_data *	channel,
		enum dma_irq_cmd	cmd
	)

inlinestatic

◆ dma_pause_legacy()

static int dma_pause_legacy ( struct dma_chan_data * channel )

inlinestatic

◆ dma_probe_legacy()

static int dma_probe_legacy ( struct dma * dma )

inlinestatic

◆ dma_put()

void dma_put ( struct dma * dma )

◆ dma_reg_read()

static uint32_t dma_reg_read	(	struct dma *	dma,
		uint32_t	reg
	)

inlinestatic

◆ dma_reg_read16()

static uint16_t dma_reg_read16	(	struct dma *	dma,
		uint32_t	reg
	)

inlinestatic

◆ dma_reg_update_bits()

static void dma_reg_update_bits	(	struct dma *	dma,
		uint32_t	reg,
		uint32_t	mask,
		uint32_t	value
	)

inlinestatic

◆ dma_reg_write()

static void dma_reg_write	(	struct dma *	dma,
		uint32_t	reg,
		uint32_t	value
	)

inlinestatic

◆ dma_reg_write16()

static void dma_reg_write16	(	struct dma *	dma,
		uint32_t	reg,
		uint16_t	value
	)

inlinestatic

◆ dma_release_legacy()

static int dma_release_legacy ( struct dma_chan_data * channel )

inlinestatic

◆ dma_remove_legacy()

static int dma_remove_legacy ( struct dma * dma )

inlinestatic

◆ dma_set_config_legacy()

static int dma_set_config_legacy	(	struct dma_chan_data *	channel,
		struct dma_sg_config *	config
	)

inlinestatic

◆ dma_start_legacy()

static int dma_start_legacy ( struct dma_chan_data * channel )

inlinestatic

◆ dma_status_legacy()

static int dma_status_legacy	(	struct dma_chan_data *	channel,
		struct dma_chan_status *	status,
		uint8_t	direction
	)

inlinestatic

◆ dma_stop_delayed_legacy()

static int dma_stop_delayed_legacy ( struct dma_chan_data * channel )

inlinestatic

◆ dma_stop_legacy()

static int dma_stop_legacy ( struct dma_chan_data * channel )

inlinestatic

Data Structures

Macros

Enumerations

Functions

Macro Definition Documentation

◆ DMA_ACCESS_EXCLUSIVE

◆ DMA_ACCESS_SHARED

◆ DMA_ATTR_BUFFER_ADDRESS_ALIGNMENT

◆ DMA_ATTR_BUFFER_ALIGNMENT

◆ DMA_ATTR_BUFFER_PERIOD_COUNT

◆ DMA_ATTR_COPY_ALIGNMENT

◆ dma_base

◆ dma_chan_base

◆ dma_chan_get_data

◆ DMA_CHAN_INVALID

◆ dma_chan_set_data

◆ dma_chan_size

◆ DMA_COPY_BLOCKING

◆ DMA_COPY_ONE_SHOT

◆ DMA_CORE_INVALID

◆ DMA_DEV_HOST

◆ DMA_DIR_DEV_TO_DEV

◆ DMA_DIR_DEV_TO_MEM

◆ DMA_DIR_HMEM_TO_LMEM

◆ DMA_DIR_LMEM_TO_HMEM

◆ DMA_DIR_MEM_TO_DEV

◆ DMA_DIR_MEM_TO_MEM

◆ dma_get_drvdata

◆ dma_irq

◆ dma_irq_name

◆ dma_set_drvdata

Enumeration Type Documentation

◆ dma_cb_status

◆ dma_irq_cmd

Function Documentation

◆ dma_chan_reg_read()

◆ dma_chan_reg_read16()

◆ dma_chan_reg_update_bits()

◆ dma_chan_reg_update_bits16()

◆ dma_chan_reg_write()

◆ dma_chan_reg_write16()

◆ dma_channel_get_legacy()

◆ dma_channel_put_legacy()

◆ dma_copy_free()

◆ dma_copy_from_host()

◆ dma_copy_from_host_nowait()

◆ dma_copy_legacy()

◆ dma_copy_new()

◆ dma_copy_set_stream_tag()

◆ dma_copy_to_host()

◆ dma_copy_to_host_nowait()

◆ dma_get()

◆ dma_get_attribute_legacy()

◆ dma_get_data_size_legacy()

◆ dma_interrupt_legacy()

◆ dma_pause_legacy()

◆ dma_probe_legacy()

◆ dma_put()

◆ dma_reg_read()

◆ dma_reg_read16()

◆ dma_reg_update_bits()

◆ dma_reg_write()

◆ dma_reg_write16()

◆ dma_release_legacy()

◆ dma_remove_legacy()

◆ dma_set_config_legacy()

◆ dma_start_legacy()

◆ dma_status_legacy()

◆ dma_stop_delayed_legacy()

◆ dma_stop_legacy()