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Method for preventing bus fault, communication equipment and bus monitoring device

A technology for bus monitoring and communication equipment, applied in the field of data transmission, can solve problems such as retry operation of the leading equipment, and achieve the effect of avoiding system bus hang, improving reliability, and avoiding proliferation.

Inactive Publication Date: 2007-07-18
祝征
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to solve the problem that the failure of the target equipment in the Compact PCI system causes the leading equipment to continuously retry the operation, and provide a method, system and bus monitoring device for avoiding bus failure

Method used

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  • Method for preventing bus fault, communication equipment and bus monitoring device
  • Method for preventing bus fault, communication equipment and bus monitoring device
  • Method for preventing bus fault, communication equipment and bus monitoring device

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Embodiment Construction

[0028] When a certain PCI operation is in progress, the access information between the master device and the target device needs to be transmitted through the PCI bus. At this time, the information transmitted on the PCI bus in the system board and the Compact PCI bus between the boards includes the target device. The retry response information generated by the master device when the failure occurs and the retry operation information generated by the master device according to the retry response. In addition, according to the definition of the PCI specification, when the master device accesses, it needs to send the address information of the target device at the same time. Therefore, using the PCI bus The characteristics of the information contained above, in order to achieve the invention purpose of the present invention to solve the problem of single board hanging caused by the failure of the target device, the technical solution adopted in the embodiment of the present invent...

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Abstract

A method for avoiding fault of bus includes carrying out monitor on PCI bus, counting frequency of retest operation when retest operation is occurred on said PCI bus, sending interruption signal to CPU when counted number of said retest operation frequency is greater than threshold of retest frequency, carrying out fault treatment on said retest operation by CPU after said interruption signal is received by CPU.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to a method for avoiding bus faults, communication equipment and a bus monitoring device. Background technique [0002] With the popularization of the PCI (Peripheral Component Interconnect, external device interconnection) bus in the field of personal computers, it is gradually applied to other fields, such as servers, notebook computers, embedded systems, etc., in 1994, PICMG (PCI Industrial Computer Manufacturers Group, The PCI Industrial Computer Manufacturers Association) released the Compact PCI (Compact Peripheral Component Interconnect, compact external device interconnection) specification, which extends the PCI bus to the fields of telecommunications and industrial control that require high reliability. At present, a large number of chips support the PCI bus specification. The devices connected to the PCI bus are called PCI devices. When a transaction is processe...

Claims

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Application Information

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IPC IPC(8): G06F11/00G06F11/30
Inventor 杨辉蒋伟李延松
Owner 祝征
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