[RFC PATCH 0/3] move swiotlb header file into common code

This patchset does two main things:

- creates an asm-generic/swiotlb.h header file and makes x86-64 and
IA64 both use it.

- make swiotlb use 'enum dma_direction_dir' instead of 'int dir',
which is the right thing to do in the DMA API, and updates x86-64 and
ia64 accordingly.

This is the first step towards having a common IOMMU
infrastructure. Unfortunatly applying any of the patches require the
other 2.

Compile tested on both x86-64 and IA64, I'll appreciate it if someone
knowledgable about IA64 could double check the IA64 bits.

Cheers,
Muli
-- 
Muli Ben-Yehuda
http://www.mulix.org | http://mulix.livejournal.com/

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