MCA Architecture
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Chapter 10. Hardware Interfaces
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MCA Architecture
MCA Device Functions
MCA Bus DMA
MCA Device Functions
Refer to the file arch/x86/kernel/mca_32.c for more information.
MCA Bus DMA
mca_enable_dma
— channel to enable DMA on
mca_disable_dma
— channel to disable DMA on
mca_set_dma_addr
— load a 24bit DMA address
mca_get_dma_addr
— load a 24bit DMA address
mca_set_dma_count
— load a 16bit transfer count
mca_get_dma_residue
— get the remaining bytes to transfer
mca_set_dma_io
— set the port for an I/O transfer
mca_set_dma_mode
— set the DMA mode