SH4 DMA Controller API. More...

#include <sys/cdefs.h>
#include <stdint.h>
#include <stdbool.h>

Data Structures
struct	dma_config_t
	DMA transfer configuration. More...

Enumerations
enum	dma_channel_t { DMA_CHANNEL_0 , DMA_CHANNEL_1 , DMA_CHANNEL_2 , DMA_CHANNEL_3 }
	DMA channel enum. More...

enum	dma_request_t { DMA_REQUEST_EXTERNAL_MEM_TO_MEM = 0 , DMA_REQUEST_EXTERNAL_MEM_TO_DEV = 2 , DMA_REQUEST_EXTERNAL_DEV_TO_MEM = 3 , DMA_REQUEST_AUTO_MEM_TO_MEM = 4 , DMA_REQUEST_AUTO_MEM_TO_DEV = 5 , DMA_REQUEST_AUTO_DEV_TO_MEM = 6 , DMA_REQUEST_SCI_TRANSMIT = 8 , DMA_REQUEST_SCI_RECEIVE = 9 , DMA_REQUEST_SCIF_TRANSMIT = 10 , DMA_REQUEST_SCIF_RECEIVE = 11 , DMA_REQUEST_TMU2_MEM_TO_MEM = 12 , DMA_REQUEST_TMU2_MEM_TO_DEV = 13 , DMA_REQUEST_TMU2_DEV_TO_MEM = 14 }
	DMA request. More...

enum	dma_unitsize_t { DMA_UNITSIZE_64BIT , DMA_UNITSIZE_8BIT , DMA_UNITSIZE_16BIT , DMA_UNITSIZE_32BIT , DMA_UNITSIZE_32BYTE }
	DMA unit size. More...

enum	dma_addrmode_t { DMA_ADDRMODE_FIXED , DMA_ADDRMODE_INCREMENT , DMA_ADDRMODE_DECREMENT }
	DMA address mode. More...

enum	dma_transmitmode_t { DMA_TRANSMITMODE_CYCLE_STEAL , DMA_TRANSMITMODE_BURST }
	DMA transmit mode. More...

Functions
dma_addr_t	hw_to_dma_addr (uintptr_t hw_addr)
	Convert a hardware address to a DMA address.

dma_addr_t	dma_map_src (const void *ptr, size_t len)
	Prepare a source memory buffer for a DMA transfer.

dma_addr_t	dma_map_dst (void *ptr, size_t len)
	Prepare a destination memory buffer for a DMA transfer.

int	dma_transfer (const dma_config_t cfg, dma_addr_t dst, dma_addr_t src, size_t len, void cb_data)
	Program a DMA transfer.

void	dma_wait_complete (dma_channel_t channel)
	Wait for a DMA transfer to complete.

bool	dma_is_running (dma_channel_t channel)
	Check if a DMA transfer is running.

size_t	dma_transfer_get_remaining (dma_channel_t channel)
	Get the remaining size of a DMA transfer.

void	dma_transfer_abort (dma_channel_t channel)
	Abort a DMA transfer.

Detailed Description

SH4 DMA Controller API.

This header provies an API to use the DMA controller of the SH4.

Data Structures