diff options
Diffstat (limited to 'include/linux/amd-iommu.h')
| -rw-r--r-- | include/linux/amd-iommu.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/amd-iommu.h b/include/linux/amd-iommu.h index e8c7a2ec86b3..23e21e15dfab 100644 --- a/include/linux/amd-iommu.h +++ b/include/linux/amd-iommu.h @@ -24,9 +24,13 @@ #ifdef CONFIG_AMD_IOMMU +struct task_struct; struct pci_dev; extern int amd_iommu_detect(void); +extern int amd_iommu_bind_pasid(struct pci_dev *pdev, int pasid, + struct task_struct *task); +extern void amd_iommu_unbind_pasid(struct pci_dev *pdev, int pasid); /** @@ -65,6 +69,28 @@ extern int amd_iommu_init_device(struct pci_dev *pdev, int pasids); */ extern void amd_iommu_free_device(struct pci_dev *pdev); +/** + * amd_iommu_bind_pasid() - Bind a given task to a PASID on a device + * @pdev: The PCI device to bind the task to + * @pasid: The PASID on the device the task should be bound to + * @task: the task to bind + * + * The function returns 0 on success or a negative value on error. + */ +extern int amd_iommu_bind_pasid(struct pci_dev *pdev, int pasid, + struct task_struct *task); + +/** + * amd_iommu_unbind_pasid() - Unbind a PASID from its task on + * a device + * @pdev: The device of the PASID + * @pasid: The PASID to unbind + * + * When this function returns the device is no longer using the PASID + * and the PASID is no longer bound to its task. + */ +extern void amd_iommu_unbind_pasid(struct pci_dev *pdev, int pasid); + #else static inline int amd_iommu_detect(void) { return -ENODEV; } |