PCIE exchange chip port configuration system and method supporting virtual exchange

Abstract

The invention discloses a PCIE exchange chip port configuration system and method supporting virtual exchange, and the system comprises: a port controller which is used for realizing the functions ofa medium access control layer, a data link layer and a transaction layer of a physical layer; a physical layer interface for realizing the functions of a physical medium adaptation layer and a physical coding sub-layer of a PCIE physical layer; a routing module which is used for receiving routing information from the port controller, carrying out routing lookup according to the routing informationand acquiring a processing mode and a transceiving port number of the data packet; an EEPROM interface controller for reading configuration information of an external EEPROM and sending the configuration information to the configuration module; a configuration module which is used for receiving configuration information, configuring the ports, configuring the ports as upstream ports or downstreamports, dividing a virtual switching area in the chip, and controlling each port to be enabled; and a crossbar switch for forwarding the data packet passing through the PCIE switching chip. The port configuration can be quickly completed, and the time limit requirement of PCIE switching chip initialization is met.

Description

technical field [0001] The invention relates to the technical field of high-speed interconnection bus (Peripheral Component Interconnect Express, PCIE) of computer peripheral equipment, in particular to a PCIE switching chip supporting virtual switching. Background technique [0002] With the development of computing technology, many high-density modular server platforms, or open blades, have emerged in recent years. Such server platforms require the connected PCIE switch to provide partitioning functions. [0003] figure 1 It is a schematic diagram of an existing multi-host system, such as figure 1 As shown, in the existing multi-host system, the three servers are connected through the same PCIE switch chip, and the partition configuration is done through the PCIE switch chip. According to the change of the task, the I / O device connected to the switch chip will Arbitrarily distributed among Server A, Server B, and Server C. When the basic input and output system BIOS (ab...

AI Technical Summary

Problems solved by technology

[0004] In the above multi-host system, when multiple servers are connected through the same PCIE switch chip, if no partition is made, problems will occur, because multiple operating systems will enumerate the virtual bridge and I / O in the same PCIE system respectively. device, and assign access addresses to it, a conflict will occur at this time

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