Data Fields
struct dma_device	dma_dev

bool	m2m

int(*	hw_setup )(struct ep93xx_dma_chan *)

void(*	hw_shutdown )(struct ep93xx_dma_chan *)

void(*	hw_submit )(struct ep93xx_dma_chan *)

int(*	hw_interrupt )(struct ep93xx_dma_chan *)

size_t	num_channels

struct ep93xx_dma_chan	channels []

Detailed Description

struct ep93xx_dma_engine - the EP93xx DMA engine instance : holds the dmaengine device : is this an M2M or M2P device : method which sets the channel up for operation : shuts the channel down and flushes whatever is left : pushes active descriptor(s) to the hardware : handle the interrupt : number of channels for this instance : array of channels

There is one instance of this struct for the M2P channels and one for the M2M channels. hw_xxx() methods are used to perform operations which are different on M2M and M2P channels. These methods are called with channel lock held and interrupts disabled so they cannot sleep.

Definition at line 200 of file ep93xx_dma.c.