tree aeb86783e2c32a77b7dfe64cd0936e704338b2da
parent 8f2502fd8157632909ff335a3c628e7caeec5e03
author FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> 1247187901 +0900
committer FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> 1248758360 +0900

x86, IA64, powerpc: add phys_to_dma() and dma_to_phys()

This adds two functions, phys_to_dma() and dma_to_phys() to x86, IA64
and powerpc. swiotlb uses them. phys_to_dma() converts a physical
address to a dma address. dma_to_phys() does the opposite.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Becky Bruce <beckyb@kernel.crashing.org>