UNIVERSAL PCI EXPRESS PORT

摘要

Methods and systems are disclosed herein for providing a universal PCIe port. The same port can be configured to accept a PCIe component as a host or an endpoint (device) symmetrically. The PCIe port can be connected to the host interface or the root complex interface if the PCIe connection is to be configured as a host or an endpoint, respectively. A virtual topology can be provided for a host that associates the host with corresponding endpoints. A mapping between virtual addresses of the corresponding endpoints in the virtual topology and local addresses of the corresponding endpoints is provided.

主权项

1. A method for configuring a Peripheral Component Interconnect Express (PCIe) port of a server chassis to accept a PCIe component connected to the PCIe port as a host or an endpoint, the method comprising:
determining whether the PCIe component is communicably connected to the PCIe port has a host or an endpoint; if the PCIe component is a host:
connecting the host to a host interface in an interconnect fabric;determining one or more corresponding endpoints for the host;providing a first virtual topology for the host associating the host with virtual address(es) of one or more corresponding endpoints of the host; andproviding a first mapping between the virtual address(es) of the one or more corresponding endpoints and local address(es) of the corresponding endpoints; if the PCIe device is an endpoint device:
connecting the endpoint to a root complex interface in the interconnect fabric, wherein the endpoint is addressable by a local address though the root complex interface;determining a corresponding host of the endpoint and a second virtual topology associated with the corresponding host; andproviding a second mapping between a virtual address in the second virtual topology and the local address of the endpoint.