The Linux Kernel API
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mca_set_dma_mode

Name

mca_set_dma_mode --  set the DMA mode

Synopsis

void mca_set_dma_mode (unsigned int dmanr, unsigned int mode);

Arguments

dmanr

DMA channel

mode

mode to set

Description

The DMA controller supports several modes. The mode values you can

set are

MCA_DMA_MODE_READ when reading from the DMA device.

MCA_DMA_MODE_WRITE to writing to the DMA device.

MCA_DMA_MODE_IO to do DMA to or from an I/O port.

MCA_DMA_MODE_16 to do 16bit transfers.

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mca_set_dma_ioUpThe Device File System