Commit graph

8 commits

Author SHA1 Message Date
Tom Lyon
323f99cbc3 iommu-api: Extension to check for interrupt remapping
This patch allows IOMMU users to determine whether the
hardware and software support safe, isolated interrupt
remapping.  Not all Intel IOMMUs have the hardware, and the
software for AMD is not there yet.

Signed-off-by: Tom Lyon <pugs@cisco.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2010-07-19 15:44:25 +02:00
Joerg Roedel
12c7389abe iommu-api: Remove iommu_{un}map_range functions
These functions are not longer used and can be removed
savely. There functionality is now provided by the
iommu_{un}map functions which are also capable of multiple
page sizes.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2010-03-07 18:01:13 +01:00
Joerg Roedel
6765178694 iommu-api: Add ->{un}map callbacks to iommu_ops
This patch adds new callbacks for mapping and unmapping
pages to the iommu_ops structure. These callbacks are aware
of page sizes which makes them different to the
->{un}map_range callbacks.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2010-03-07 18:01:11 +01:00
Joerg Roedel
cefc53c7f4 iommu-api: Add iommu_map and iommu_unmap functions
These two functions provide support for mapping and
unmapping physical addresses to io virtual addresses. The
difference to the iommu_(un)map_range() is that the new
functions take a gfp_order parameter instead of a size. This
allows the IOMMU backend implementations to detect easier if
a given range can be mapped by larger page sizes.
These new functions should replace the old ones in the long
term.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2010-03-07 18:01:11 +01:00
Joerg Roedel
4abc14a733 iommu-api: Rename ->{un}map function pointers to ->{un}map_range
The new function pointer names match better with the
top-level functions of the iommu-api which are using them.
Main intention of this change is to make the ->{un}map
pointer names free for two new mapping functions.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2010-03-07 18:01:11 +01:00
Sheng Yang
9cf0669746 intel-iommu: VT-d page table to support snooping control bit
The user can request to enable snooping control through VT-d page table.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-24 09:42:54 +00:00
Sheng Yang
dbb9fd8630 iommu: Add domain_has_cap iommu_ops
This iommu_op can tell if domain have a specific capability, like snooping
control for Intel IOMMU, which can be used by other components of kernel to
adjust the behaviour.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-24 09:42:51 +00:00
Joerg Roedel
4a77a6cf6d introcude linux/iommu.h for an iommu api
This patch introduces the API to abstract the exported VT-d functions
for KVM into a generic API. This way the AMD IOMMU implementation can
plug into this API later.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:10:09 +01:00