On Tue, Jun 06, 2006 at 09:39:29AM +0800, Liu Dave-r63238 wrote: > What is the DMA transfer mode? Is direct or chaining mode?
Direct mode. I fixed an error with my bit ordering for the configuration registers, and now the transfer seems to complete, but I don't see any actual data showing up in the destination register that I am writing to. > Did you ioremap the DMA register space? Yes, I can write the destination address manually. So I am thinking my addresses are wrong. For the source and dest address I used: dma_map_single(NULL, ptr, len, DMA_TO_DEVICE) (which effectively does a virt_to_bus on ppc and so should just return to me the bus address used by the dma). -naru
