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| author | Weidong Han <weidong.han@intel.com> | 2008-12-08 10:34:06 +0300 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-01-03 16:02:18 +0300 |
| commit | 1b5736839ae13dadc5947940144f95dd0f4a4a8c (patch) | |
| tree | 2b6ce6b68850d905e4ce5d38b6872b82f6328208 /include/linux | |
| parent | 8c11e798eee2ce4475134eaf61302b28ea4f205d (diff) | |
| download | linux-1b5736839ae13dadc5947940144f95dd0f4a4a8c.tar.xz | |
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')
| -rw-r--r-- | include/linux/dma_remapping.h | 1 | ||||
| -rw-r--r-- | include/linux/intel-iommu.h | 1 |
2 files changed, 2 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; diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 1bff7bf1bc2c..06349fd5871b 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -290,6 +290,7 @@ struct intel_iommu { u32 gcmd; /* Holds TE, EAFL. Don't need SRTP, SFL, WBF */ spinlock_t register_lock; /* protect register handling */ int seq_id; /* sequence id of the iommu */ + int agaw; /* agaw of this iommu */ #ifdef CONFIG_DMAR unsigned long *domain_ids; /* bitmap of domains */ |