From: Andi Kleen <[email protected]>
Date: Tue, 13 Jun 2006 05:47:49 +0200
> I've been playing with the idea of writing "early1394" that just
> turns the DMA controller on as early as possible similar to earlyprintk
> on the target. Then it would be possible to use it for early
> debugging too. But so far it's not done yet.
Does this raw1394 thing with firescope just assume DMA address ==
physical address? How would it work to access all of physical
memory properly on IOMMU platforms?
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