Patent attributes
A lane reversal detection and bifurcation system includes an interface that includes a plurality of lanes that are coupled to an endpoint interface of an endpoint device and a BIOS that bifurcates the interface into a first root port and a second root port, such that the first root port is coupled to a first subset of the plurality of lanes, and the second root port is coupled to a second subset of the plurality of lanes. The BIOS initializes the endpoint device to establish a link between the endpoint device and the interface. The BIOS detects an endpoint presence and a non-functional link at the first root port and an endpoint presence and a functional link at the second root port and, in response, determines that the first subset of the plurality of lanes coupled to the endpoint device are subject to a lane reversal.
