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iommu/vt-d: Replace intel SVM APIs with generic SVA APIs

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This patch is an initial step to replace Intel SVM code with the
following IOMMU SVA ops:
intel_svm_bind_mm() => iommu_sva_bind_device()
intel_svm_unbind_mm() => iommu_sva_unbind_device()
intel_svm_is_pasid_valid() => iommu_sva_get_pasid()

The features below will continue to work but are not included in this patch
in that they are handled mostly within the IOMMU subsystem.
- IO page fault
- mmu notifier

Consolidation of the above will come after merging generic IOMMU sva
code[1]. There should not be any changes needed for SVA users such as
accelerator device drivers during this time.

[1] http://jpbrucker.net/sva/

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20200516062101.29541-12-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Jacob Pan 2020-05-16 14:20:54 +08:00 • committed by Joerg Roedel
parent 76fdd6c595
commit 064a57d7dd
4 changed files with 78 additions and 141 deletions
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6
include/linux/intel-iommu.h
View file

@ -723,6 +723,10 @@ extern int intel_svm_finish_prq(struct intel_iommu *iommu);
int intel_svm_bind_gpasid(struct iommu_domain *domain, struct device *dev,
struct iommu_gpasid_bind_data *data);
int intel_svm_unbind_gpasid(struct device *dev, int pasid);
struct iommu_sva *intel_svm_bind(struct device *dev, struct mm_struct *mm,
void *drvdata);
void intel_svm_unbind(struct iommu_sva *handle);
int intel_svm_get_pasid(struct iommu_sva *handle);
struct svm_dev_ops;
struct intel_svm_dev {
@ -730,6 +734,8 @@ struct intel_svm_dev {
struct rcu_head rcu;
struct device *dev;
struct svm_dev_ops *ops;
struct iommu_sva sva;
int pasid;
int users;
u16 did;
u16 dev_iotlb:1;