def express_type()

in pci_lib/pci_lib.py [0:0]

• 8 lines of code
• 2 McCabe index (conditional complexity)

    def express_type(self):
        """
        @return PCI-Express device type, None if this is a PCI device.
        """
        with closing(PCIConfigSpace.get(self.device_name)) as config:
            express = find_capability(config, PCI_CAP_EXPRESS)
            if express is None:
                return None
            flags = read_u16(config, express + PCI_CAP_FLAGS)
            exptype = EXPRESS_TYPES.get((flags & 0xf0) >> 4)
            return exptype