SYNOPSIS

struct dma_async_tx_descriptor * rio_dma_prep_slave_sg(struct rio_dev * rdev, struct dma_chan * dchan, struct rio_dma_data * data, enum dma_transfer_direction direction, unsigned long flags);

ARGUMENTS

rdev

RIO device control structure

dchan

DMA channel to configure

data

RIO specific data descriptor

direction

DMA data transfer direction (TO or FROM the device)

flags

dmaengine defined flags

DESCRIPTION

Initializes RapidIO capable DMA channel for the specified data transfer. Uses DMA channel private extension to pass information related to remote target RIO device. Returns pointer to DMA transaction descriptor or NULL if failed.

AUTHOR

Matt Porter <[email protected]>, <[email protected]>

Author.

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