Sideband management circuit and method based on hardware arbitration

Abstract

The invention discloses a sideband management circuit and method based on hardware arbitration. A receiving frame processing unit, a simplified medium independent interface, a hardware arbitration unit, a register and a sending frame processing unit in the sideband management circuit are all connected with a main control unit. The system bus interface, the receiving frame processing unit and the sending frame processing unit are all connected with a channel arbitration unit, and the receiving frame processing unit, the sending frame processing unit and the hardware arbitration unit are all connected with the simplified medium independent interface. According to the sideband management circuit based on hardware arbitration, only two external pins need to be added on hardware, arbitration operation code receiving and sending are directly carried out between devices on a loop to carry out hardware arbitration control, command response interaction between a BMC and the circuit is not needed in the whole arbitration process, and arbitration waiting time is shortened the sender is selected by adopting the token transmission strategy, and the data can be sent only by a token holder, so that the transmission of the sending right is ensured, the sending conflict is avoided, and the processing efficiency is improved.

Description

technical field [0001] The present invention relates to the technical field of network controller sideband interface (Network Controller Sideband Interface, NC-SI), especially relates to the sideband communication between Ethernet controller and baseboard management controller (Baseboard ManagementController, BMC), specifically relates to a A sideband management circuit and method based on hardware arbitration. Background technique [0002] Ethernet can meet the security requirements of network communication between communication systems. It has high performance, easy expansion, and supports various connection methods such as coaxial cable, twisted pair, and optical fiber. It has been widely used in military, commercial, and industrial control fields. widely used. [0003] The Ethernet controller is one of the core devices of the Ethernet. It processes and transmits data frames for the Ethernet information system based on the IEEE802.3 protocol, and is one of the important ...

AI Technical Summary

Problems solved by technology

In this process, the BMC needs to wait for the response of all sent commands. After the response is received, it can send subsequent commands. The process of selecting an Ethernet controller that meets the requirements requires a long waiting time, and the efficiency of information interaction is low.

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