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authorTom Lyon <pugs@cisco.com>2010-07-02 16:56:14 -0400
committerJoerg Roedel <joerg.roedel@amd.com>2010-07-19 09:44:25 -0400
commit323f99cbc35c52a65dea9d072b3ecf1e662240d2 (patch)
treedb4420fb391465df818949a2190e8acd8637164f /drivers/pci
parent1c5474a65bf15a4cb162dfff86d6d0b5a08a740c (diff)
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>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/intel-iommu.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index c9171be74564..6a5af18faf68 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -3698,6 +3698,8 @@ static int intel_iommu_domain_has_cap(struct iommu_domain *domain,
3698 3698
3699 if (cap == IOMMU_CAP_CACHE_COHERENCY) 3699 if (cap == IOMMU_CAP_CACHE_COHERENCY)
3700 return dmar_domain->iommu_snooping; 3700 return dmar_domain->iommu_snooping;
3701 if (cap == IOMMU_CAP_INTR_REMAP)
3702 return intr_remapping_enabled;
3701 3703
3702 return 0; 3704 return 0;
3703} 3705}