1 files changed, 34 insertions, 0 deletions
diff --git a/include/linux/device-id/dfl.h b/include/linux/device-id/dfl.h
new file mode 100644
index 000000000000..bd0c9dbafeeb
--- /dev/null
+++ b/include/linux/device-id/dfl.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef LINUX_DEVICE_ID_DFL_H
+#define LINUX_DEVICE_ID_DFL_H
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+typedef unsigned long kernel_ulong_t;
+#endif
+
+/*
+ * DFL (Device Feature List)
+ *
+ * DFL defines a linked list of feature headers within the device MMIO space to
+ * provide an extensible way of adding features. Software can walk through these
+ * predefined data structures to enumerate features. It is now used in the FPGA.
+ * See Documentation/fpga/dfl.rst for more information.
+ *
+ * The dfl bus type is introduced to match the individual feature devices (dfl
+ * devices) for specific dfl drivers.
+ */
+
+/**
+ * struct dfl_device_id -  dfl device identifier
+ * @type: DFL FIU type of the device. See enum dfl_id_type.
+ * @feature_id: feature identifier local to its DFL FIU type.
+ * @driver_data: driver specific data.
+ */
+struct dfl_device_id {
+	__u16 type;
+	__u16 feature_id;
+	kernel_ulong_t driver_data;
+};
+
+#endif /* ifndef LINUX_DEVICE_ID_DFL_H */