tree 33f7fe1a22848c7dfdd002298f27efff103480a4
parent a31fba5d68cebf8f5fefd03e079dab94875e25f5
author David Woodhouse <dwmw2@infradead.org> 1234451953 +0100
committer Joerg Roedel <joerg.roedel@amd.com> 1237290999 +0100

dma-debug: add function to dump dma mappings

This adds a function to dump the DMA mappings that the debugging code is
aware of -- either for a single device, or for _all_ devices.

This can be useful for debugging -- sticking a call to it in the DMA
page fault handler, for example, to see if the faulting address _should_
be mapped or not, and hence work out whether it's IOMMU bugs we're
seeing, or driver bugs.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>