vfio: Define device_api strings

Defined device API strings. Vendor driver using mediated device
framework should use corresponding string for device_api attribute.

Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
Signed-off-by: Neo Jia <cjia@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
index 255a2113f53cb3845b9fb8a2b06827199af2052c..519eff362c1caa14e932836816a020ed0f84ed4d 100644 (file)
--- a/include/uapi/linux/vfio.h
+++ b/include/uapi/linux/vfio.h
@@ -203,6 +203,16 @@ struct vfio_device_info {
 };
 #define VFIO_DEVICE_GET_INFO           _IO(VFIO_TYPE, VFIO_BASE + 7)
 
+/*
+ * Vendor driver using Mediated device framework should provide device_api
+ * attribute in supported type attribute groups. Device API string should be one
+ * of the following corresponding to device flags in vfio_device_info structure.
+ */
+
+#define VFIO_DEVICE_API_PCI_STRING             "vfio-pci"
+#define VFIO_DEVICE_API_PLATFORM_STRING                "vfio-platform"
+#define VFIO_DEVICE_API_AMBA_STRING            "vfio-amba"
+
 /**
  * VFIO_DEVICE_GET_REGION_INFO - _IOWR(VFIO_TYPE, VFIO_BASE + 8,
  *                                    struct vfio_region_info)