#include <linux/interrupt.h>
#include <mach/dma.h>
#include <linux/atomic.h>
#include <asm/blackfin.h>
#include <asm/page.h>
#include <asm-generic/dma.h>
#include <asm/bfin_dma.h>

Data Structures
struct	dma_desc_array

struct	dmasg

struct	dma_register

struct	dma_channel

Macros
#define	DATA_SIZE_8 0

#define	DATA_SIZE_16 1

#define	DATA_SIZE_32 2

#define	DMA_FLOW_STOP 0

#define	DMA_FLOW_AUTO 1

#define	DMA_FLOW_ARRAY 4

#define	DMA_FLOW_SMALL 6

#define	DMA_FLOW_LARGE 7

#define	DIMENSION_LINEAR 0

#define	DIMENSION_2D 1

#define	DIR_READ 0

#define	DIR_WRITE 1

#define	INTR_DISABLE 0

#define	INTR_ON_BUF 2

#define	INTR_ON_ROW 3

#define	DMA_NOSYNC_KEEP_DMA_BUF 0

#define	DMA_SYNC_RESTART 1

#define	DMA_MMR_SIZE_TYPE short

#define	DMA_MMR_READ bfin_read16

#define	DMA_MMR_WRITE bfin_write16

Functions
struct dma_desc_array	__attribute__ ((packed))

int	channel2irq (unsigned int channel)

int	set_dma_callback (unsigned int channel, irq_handler_t callback, void *data)

void *	dma_memcpy (void dest, const void src, size_t count)

void *	dma_memcpy_nocache (void dest, const void src, size_t count)

void *	safe_dma_memcpy (void dest, const void src, size_t count)

void	blackfin_dma_early_init (void)

void	early_dma_memcpy (void dest, const void src, size_t count)

void	early_dma_memcpy_done (void)

Variables
unsigned long	start_addr

unsigned DMA_MMR_SIZE_TYPE	cfg

unsigned DMA_MMR_SIZE_TYPE	x_count

DMA_MMR_SIZE_TYPE	x_modify

void *	next_desc_addr

unsigned DMA_MMR_SIZE_TYPE	y_count

DMA_MMR_SIZE_TYPE	y_modify

struct dma_register	__attribute__

struct dma_channel	dma_ch [MAX_DMA_CHANNELS]

struct dma_register *const	dma_io_base_addr [MAX_DMA_CHANNELS]

Macro Definition Documentation

#define DATA_SIZE_16 1

Definition at line 23 of file dma.h.

#define DATA_SIZE_32 2

Definition at line 24 of file dma.h.

#define DATA_SIZE_8 0

Definition at line 22 of file dma.h.

#define DIMENSION_2D 1

Definition at line 43 of file dma.h.

#define DIMENSION_LINEAR 0

Definition at line 42 of file dma.h.

#define DIR_READ 0

Definition at line 45 of file dma.h.

#define DIR_WRITE 1

Definition at line 46 of file dma.h.

#define DMA_FLOW_ARRAY 4

Definition at line 37 of file dma.h.

#define DMA_FLOW_AUTO 1

Definition at line 30 of file dma.h.

#define DMA_FLOW_LARGE 7

Definition at line 39 of file dma.h.

#define DMA_FLOW_SMALL 6

Definition at line 38 of file dma.h.

#define DMA_FLOW_STOP 0

Definition at line 29 of file dma.h.

#define DMA_MMR_READ bfin_read16

Definition at line 64 of file dma.h.

#define DMA_MMR_SIZE_TYPE short

Definition at line 63 of file dma.h.

#define DMA_MMR_WRITE bfin_write16

Definition at line 65 of file dma.h.

#define DMA_NOSYNC_KEEP_DMA_BUF 0

Definition at line 55 of file dma.h.

#define DMA_SYNC_RESTART 1

Definition at line 56 of file dma.h.

#define INTR_DISABLE 0

Definition at line 48 of file dma.h.

#define INTR_ON_BUF 2

Definition at line 52 of file dma.h.

#define INTR_ON_ROW 3

Definition at line 53 of file dma.h.

Function Documentation

struct dma_desc_array __attribute__ ( (packed) )

read

Definition at line 171 of file esd_usb2.c.

void blackfin_dma_early_init ( void )

blackfin_dma_early_init - minimal DMA init

Setup a few DMA registers so we can safely do DMA transfers early on in the kernel booting process. Really this just means using dma_memcpy().

Definition at line 265 of file bfin_dma.c.

int channel2irq ( unsigned int channel )

Definition at line 34 of file dma.c.

void* dma_memcpy	(	void *	pdst,
		const void *	psrc,
		size_t	size
	)

dma_memcpy - DMA memcpy under mutex lock

Do not check arguments before starting the DMA memcpy. Break the transfer up into two pieces. The first transfer is in multiples of 64k and the second transfer is the piece smaller than 64k.

Definition at line 532 of file bfin_dma.c.

void* dma_memcpy_nocache	(	void *	pdst,
		const void *	psrc,
		size_t	size
	)

dma_memcpy_nocache - DMA memcpy under mutex lock

No cache flush/invalidate

Do not check arguments before starting the DMA memcpy. Break the transfer up into two pieces. The first transfer is in multiples of 64k and the second transfer is the piece smaller than 64k.

Definition at line 555 of file bfin_dma.c.