DMA Memory

DMA Memory

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Posted by Dave Partington on January 18, 2002 at 06:32:54:

I am desinging an embedded product using Linux. I need to use bus master DMA, but don't want to deal with scatter gather. I understand you can start the kernel with mem=32MB (for example). If I have 128MB in my system and start with mem=32MB is the memory between 32MB and 128MB mapped as linear physical memory? Can I still access this from within Linux programs using pointers ?

Thanks in advance

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