RIO_DMA_PREP_SLAVE_S(9)              RapidIO driver interface             RIO_DMA_PREP_SLAVE_S(9)



NAME
       rio_dma_prep_slave_sg - RapidIO specific wrapper for device_prep_slave_sg callback defined
       by DMAENGINE.

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.

RETURN
       pointer to DMA transaction descriptor if successful, error-valued pointer or NULL if
       failed.

AUTHOR
       Matt Porter <mporter AT kernel.org>, <mporter AT mvista.com>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   RIO_DMA_PREP_SLAVE_S(9)