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authorWeidong Han <weidong.han@intel.com>2008-12-08 15:34:06 +0800
committerJoerg Roedel <joerg.roedel@amd.com>2009-01-03 14:02:18 +0100
commit1b5736839ae13dadc5947940144f95dd0f4a4a8c (patch)
tree2b6ce6b68850d905e4ce5d38b6872b82f6328208 /include/linux/dma_remapping.h
parent8c11e798eee2ce4475134eaf61302b28ea4f205d (diff)
downloadlwn-1b5736839ae13dadc5947940144f95dd0f4a4a8c.tar.gz
lwn-1b5736839ae13dadc5947940144f95dd0f4a4a8c.zip
calculate agaw for each iommu
"SAGAW" capability may be different across iommus. Use a default agaw, but if default agaw is not supported in some iommus, choose a less supported agaw. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'include/linux/dma_remapping.h')
-rw-r--r--include/linux/dma_remapping.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h
index 7799a85614c1..136f170cecc2 100644
--- a/include/linux/dma_remapping.h
+++ b/include/linux/dma_remapping.h
@@ -17,6 +17,7 @@ struct dmar_domain;
struct root_entry;
extern void free_dmar_iommu(struct intel_iommu *iommu);
+extern int iommu_calculate_agaw(struct intel_iommu *iommu);
extern int dmar_disabled;