diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-12-07 12:24:42 +0100 |
|---|---|---|
| committer | Hiroshi DOYU <hdoyu@nvidia.com> | 2012-01-23 11:11:42 +0200 |
| commit | a4dfe39c1b5a195c01eda6a0dc262525d6998662 (patch) | |
| tree | 65cc6bc08f758967e29ee97295b9cf568bbe13a6 /include | |
| parent | 095e1e7bacec964c45221858dea2754214b707b2 (diff) | |
iommu/amd: Add invalidate-context call-back
This call-back is invoked when the task that is bound to a
pasid is about to exit. The driver can use it to shutdown
all context related to that context in a safe way.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/amd-iommu.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/amd-iommu.h b/include/linux/amd-iommu.h index c03c281ae6ee..ef00610837d4 100644 --- a/include/linux/amd-iommu.h +++ b/include/linux/amd-iommu.h @@ -145,6 +145,23 @@ struct amd_iommu_device_info { extern int amd_iommu_device_info(struct pci_dev *pdev, struct amd_iommu_device_info *info); +/** + * amd_iommu_set_invalidate_ctx_cb() - Register a call-back for invalidating + * a pasid context. This call-back is + * invoked when the IOMMUv2 driver needs to + * invalidate a PASID context, for example + * because the task that is bound to that + * context is about to exit. + * + * @pdev: The PCI device the call-back should be registered for + * @cb: The call-back function + */ + +typedef void (*amd_iommu_invalidate_ctx)(struct pci_dev *pdev, int pasid); + +extern int amd_iommu_set_invalidate_ctx_cb(struct pci_dev *pdev, + amd_iommu_invalidate_ctx cb); + #else static inline int amd_iommu_detect(void) { return -ENODEV; } |