pci-swiotlb-xen: Add glue code to setup dma_ops utilizing xen_swiotlb_*

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functions.

We add the glue code that sets up a dma_ops structure with the
xen_swiotlb_* functions. The code turns on xen_swiotlb flag
when it detects it is running under Xen and it is either
in privileged mode or the iommu=soft flag was passed in.

It also disables the bare-metal SWIOTLB if the Xen-SWIOTLB has
been enabled.

Note: The Xen-SWIOTLB is only built when CONFIG_XEN is enabled.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Albert Herranz <albert_herranz@yahoo.es>
Cc: Ian Campbell <Ian.Campbell@citrix.com>

...

This commit is contained in:

Konrad Rzeszutek Wilk 2010-02-09 14:30:55 -05:00

parent b097186fd2

commit bbbe57386e

3 changed files with 73 additions and 0 deletions

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14

arch/x86/include/asm/xen/swiotlb-xen.h

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1

arch/x86/xen/Makefile

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58

arch/x86/xen/pci-swiotlb-xen.c

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