Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...

[~andy/linux] / include / linux / amd-iommu.h

diff --git a/include/linux/amd-iommu.h b/include/linux/amd-iommu.h
index c03c281ae6ee7a55ae44907abb796b0ca7788084..ef00610837d4f9e1b556028c151df0118b89677c 100644 (file)
--- 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; }