1 files changed, 54 insertions, 0 deletions
diff --git a/include/system/iommufd.h b/include/system/iommufd.h
index cbab75bfbf..283861b924 100644
--- a/include/system/iommufd.h
+++ b/include/system/iommufd.h
@@ -61,6 +61,60 @@ bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *be, uint32_t hwpt_id,
                                       uint64_t iova, ram_addr_t size,
                                       uint64_t page_size, uint64_t *data,
                                       Error **errp);
+bool iommufd_backend_invalidate_cache(IOMMUFDBackend *be, uint32_t id,
+                                      uint32_t data_type, uint32_t entry_len,
+                                      uint32_t *entry_num, void *data,
+                                      Error **errp);
 
 #define TYPE_HOST_IOMMU_DEVICE_IOMMUFD TYPE_HOST_IOMMU_DEVICE "-iommufd"
+OBJECT_DECLARE_TYPE(HostIOMMUDeviceIOMMUFD, HostIOMMUDeviceIOMMUFDClass,
+                    HOST_IOMMU_DEVICE_IOMMUFD)
+
+/* Overload of the host IOMMU device for the iommufd backend */
+struct HostIOMMUDeviceIOMMUFD {
+    HostIOMMUDevice parent_obj;
+
+    IOMMUFDBackend *iommufd;
+    uint32_t devid;
+    uint32_t hwpt_id;
+};
+
+struct HostIOMMUDeviceIOMMUFDClass {
+    HostIOMMUDeviceClass parent_class;
+
+    /**
+     * @attach_hwpt: attach host IOMMU device to IOMMUFD hardware page table.
+     * VFIO and VDPA device can have different implementation.
+     *
+     * Mandatory callback.
+     *
+     * @idev: host IOMMU device backed by IOMMUFD backend.
+     *
+     * @hwpt_id: ID of IOMMUFD hardware page table.
+     *
+     * @errp: pass an Error out when attachment fails.
+     *
+     * Returns: true on success, false on failure.
+     */
+    bool (*attach_hwpt)(HostIOMMUDeviceIOMMUFD *idev, uint32_t hwpt_id,
+                        Error **errp);
+    /**
+     * @detach_hwpt: detach host IOMMU device from IOMMUFD hardware page table.
+     * VFIO and VDPA device can have different implementation.
+     *
+     * Mandatory callback.
+     *
+     * @idev: host IOMMU device backed by IOMMUFD backend.
+     *
+     * @errp: pass an Error out when attachment fails.
+     *
+     * Returns: true on success, false on failure.
+     */
+    bool (*detach_hwpt)(HostIOMMUDeviceIOMMUFD *idev, Error **errp);
+};
+
+bool host_iommu_device_iommufd_attach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
+                                           uint32_t hwpt_id, Error **errp);
+bool host_iommu_device_iommufd_detach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
+                                           Error **errp);
 #endif