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| author | Robin Murphy <robin.murphy@arm.com> | 2015-10-01 22:13:58 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-10-15 17:41:04 +0300 |
| commit | 0db2e5d18f76a66ca945447d9f610bed0a94ca5a (patch) | |
| tree | 0c3d896165c2bd071eacdb06879082fcc0c32a12 /include/linux/iommu.h | |
| parent | 25cb62b76430a91cc6195f902e61c2cb84ade622 (diff) | |
| download | linux-0db2e5d18f76a66ca945447d9f610bed0a94ca5a.tar.xz | |
iommu: Implement common IOMMU ops for DMA mapping
Taking inspiration from the existing arch/arm code, break out some
generic functions to interface the DMA-API to the IOMMU-API. This will
do the bulk of the heavy lifting for IOMMU-backed dma-mapping.
Since associating an IOVA allocator with an IOMMU domain is a fairly
common need, rather than introduce yet another private structure just to
do this for ourselves, extend the top-level struct iommu_domain with the
notion. A simple opaque cookie allows reuse by other IOMMU API users
with their various different incompatible allocator types.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f9c1b6d0f2e4..f174506a5343 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -81,6 +81,7 @@ struct iommu_domain { iommu_fault_handler_t handler; void *handler_token; struct iommu_domain_geometry geometry; + void *iova_cookie; }; enum iommu_cap { |