DFL_FPGA_BASE      44 include/uapi/linux/fpga-dfl.h #define DFL_FPGA_GET_API_VERSION	_IO(DFL_FPGA_MAGIC, DFL_FPGA_BASE + 0)
DFL_FPGA_BASE      53 include/uapi/linux/fpga-dfl.h #define DFL_FPGA_CHECK_EXTENSION	_IO(DFL_FPGA_MAGIC, DFL_FPGA_BASE + 1)