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DMA driver

Altera_Forum
Honored Contributor II
‎12-28-2006 04:10 AM
1,039 Views

Is there anybody who had writen dma driver?or who can show his relative code to me ,and I can learn from it.Thanks. Recently,I'm studying driver under uClinux.In my nios2 processor,I use dma to transmit data to my own IP,so I want to drive the dma to transmit data under uClinux. 

who can help me ?Thanks!
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Altera_Forum
Honored Contributor II
‎12-29-2006 01:30 AM
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You can look at the DMA driver in linux-2.6.x/arch/nios2nommu/kernel/dma.c . 

The dma memory should be uncached or you need flush cache before dma.
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