How to control DMA core?

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originally posted by ohaltera@Jan 17 2007, 08:46 PM

i am doing a project which need to use pci core. since i am not going to use the niosii, so dma become my option.

my question is: how can i control the dma to read the data from pci and write it to ddr2? or how can i read the data from ddr2 and write it to pci? or probably i don't need to control the dma at all? i need to give the source adderss and destination address to the dma, right?

correct me if my idea is wrong.

any opinions are welcomed.

thanks.

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First, how do you plan to control the DMA engine? From the PCI bus?

Second, I gather you want the board to master both PCI reads and Memory writes or are you just trying to access memory from the PCI bus?

Mike