DMA

Defines
#define	DMA_TRANSFER(_dst, _src, count, ch, mode)
	General purpose DMA transfer macro.
Functions
INLINE void	dma_cpy (void *dst, const void *src, uint count, uint ch, u32 mode)
	Generic DMA copy routine.
INLINE void	dma_fill (void *dst, volatile u32 src, uint count, uint ch, u32 mode)
	Generic DMA fill routine.
INLINE void	dma3_cpy (void *dst, const void *src, uint size)
	Specific DMA copier, using channel 3, word transfers.
INLINE void	dma3_fill (void *dst, volatile u32 src, uint size)
	Specific DMA filler, using channel 3, word transfers.

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Detailed Description

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Define Documentation

#define DMA_TRANSFER	(	_dst,
		_src,
		count,
		ch,
		mode		)

Value:

do {                                        \
    REG_DMA[ch].cnt= 0;                     \
    REG_DMA[ch].src= (const void*)(_src);   \
    REG_DMA[ch].dst= (void*)(_dst);         \
    REG_DMA[ch].cnt= (count) | (mode);      \
} while(0)

General purpose DMA transfer macro.

Parameters:

	_dst	Destination address.
	_src	Source address.
	count	Number of transfers.
	ch	DMA channel.
	mode	DMA mode.

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Function Documentation

INLINE void dma3_cpy	(	void *	dst,
		const void *	src,
		uint	size
	)

Specific DMA copier, using channel 3, word transfers.

Parameters:

	dst	Destination address.
	src	Source address.
	size	Number of bytes to copy

Note:

size is the number of bytes

INLINE void dma3_fill	(	void *	dst,
		volatile u32	src,
		uint	size
	)

Specific DMA filler, using channel 3, word transfers.

Parameters:

	dst	Destination address.
	src	Source value.
	size	Number of bytes to copy

Note:

size is the number of bytes

INLINE void dma_cpy	(	void *	dst,
		const void *	src,
		uint	count,
		uint	ch,
		u32	mode
	)

Generic DMA copy routine.

Parameters:

	dst	Destination address.
	src	Source address.
	count	Number of copies to perform.
	ch	DMA channel.
	mode	DMA transfer mode.

Note:

count is the number of copies, not the size in bytes.

INLINE void dma_fill	(	void *	dst,
		volatile u32	src,
		uint	count,
		uint	ch,
		u32	mode
	)

Generic DMA fill routine.

Parameters:

	dst	Destination address.
	src	Source value.
	count	Number of copies to perform.
	ch	DMA channel.
	mode	DMA transfer mode.

Note:

count is the number of copies, not the size in bytes.

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