Fault tolerance method and system of radar processor SRIO communication system

Abstract

The invention belongs to the technical field of data processing, and particularly relates to a fault tolerance method and system of a radar processor SRIO communication system. The method comprises the following steps: sending a reset connection control symbol to a receiving port of a first switching chip directly connected with the sending end so as to reset the receiving port of the first switching chip; resetting the self SRIO sending port of the sending end; sending a maintenance write operation to a chip specified by a jump parameter HOPCOUNT in the maintenance instruction, and resetting a receiving port of a second switch chip; resetting an SRIO sending port of the first switching chip through maintenance write operation; and modifying a jump parameter HOP_COUNT in the maintenance write operation instruction, enabling the maintenance instruction to act on the next-stage switching chip, and repeating the steps until the SRIO sending port and the SRIO receiving port of the switching chip between the sending end and the receiving end are all reset. According to the method, the interconnection port between the switch chips on the whole communication link from the sender to the receiver is repaired by using the maintenance write operation, and the communication from the sender to other normal terminals is recovered.

Description

technical field [0001] The application belongs to the technical field of data processing, and in particular relates to a fault-tolerant method and system of a radar processor SRIO communication system. Background technique [0002] The radar processor is the brain of the radar system, between the radar signal receiving unit and the display unit, and is the core component of the internal information processing of the radar system. In the field of radar processing, the transmission of digital signals has high bandwidth, low delay, and high reliability requirements. Thanks to the high-speed, reliability, and communication node pairing characteristics of SRIO communication technology, the SRIO bus is widely used in scenarios such as intra-processing boards and inter-processing board backplane communications in radar processors. [0003] A typical processor SRIO communication system framework such as figure 1 shown. In the process of using this type of communication system for...

AI Technical Summary

Problems solved by technology

[0004] 2) During the working process of the system, the receiver accidentally loses power, resets, or runs away

SRIO packets that fail to be sent will always be back pressured to the sender, causing the sender's SRIO interface to be in the output-retry-stopped state and cannot be recovered

Once the above scenario occurs, the sender will neither be able to send packets to other terminals in the system nor receive packets from other terminals, that is, the receiver will be offline and the sender will be offline

For this kind of interruption problem, the SRIO communication can only be restored by resetting the entire processor, which inevitably leads to the disappearance of the radar target and the freeze of the display screen. How to solve the offline problem of the sender without resetting the whole system , so far there is no effective method

Images