tree 8fc9ca543fc3966eb961743ba4587298fce49279
parent 51e8513615ed8202b22ba9a43b0c7376ea4f6868
author David S. Miller <davem@sunset.davemloft.net> 1129266924 -0700
committer David S. Miller <davem@sunset.davemloft.net> 1129266924 -0700

[SPARC64]: Eliminate PCI IOMMU dma mapping size limit.

The hairy fast allocator in the sparc64 PCI IOMMU code
has a hard limit of 256 pages.  Certain devices can
exceed this when performing very large I/Os.

So replace with a more simple allocator, based largely
upon the arch/ppc64/kernel/iommu.c code.

Signed-off-by: David S. Miller <davem@davemloft.net>