diff options
| author | David Woodhouse <David.Woodhouse@intel.com> | 2015-03-24 14:54:56 +0000 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2015-10-15 11:24:51 +0100 |
| commit | 8a94ade4ce6df22006b96c5c9a8d6d12fce67585 (patch) | |
| tree | e67549edc8ec7f33b89eb1974d754e7f8bd2dd3c /drivers/iommu/intel-iommu.c | |
| parent | ae853ddb9ad5e7c01cad3fbf016040acd961f407 (diff) | |
iommu/vt-d: Add initial support for PASID tables
Add CONFIG_INTEL_IOMMU_SVM, and allocate PASID tables on supported hardware.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/iommu/intel-iommu.c')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 6a01735f4df3..ab99fcfd9f2d 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1680,6 +1680,11 @@ static void free_dmar_iommu(struct intel_iommu *iommu) /* free context mapping */ free_context_table(iommu); + +#ifdef CONFIG_INTEL_IOMMU_SVM + if (pasid_enabled(iommu)) + intel_svm_free_pasid_tables(iommu); +#endif } static struct dmar_domain *alloc_domain(int flags) @@ -3107,6 +3112,10 @@ static int __init init_dmars(void) if (!ecap_pass_through(iommu->ecap)) hw_pass_through = 0; +#ifdef CONFIG_INTEL_IOMMU_SVM + if (pasid_enabled(iommu)) + intel_svm_alloc_pasid_tables(iommu); +#endif } if (iommu_pass_through) @@ -4122,6 +4131,11 @@ static int intel_iommu_add(struct dmar_drhd_unit *dmaru) if (ret) goto out; +#ifdef CONFIG_INTEL_IOMMU_SVM + if (pasid_enabled(iommu)) + intel_svm_alloc_pasid_tables(iommu); +#endif + if (dmaru->ignored) { /* * we always have to disable PMRs or DMA may fail on this device |