Method and device for disconnecting link between PCIe (peripheral component interface express) equipment and host computer

A device and mainframe technology, applied in the computer field, can solve problems affecting mainframe business, etc.

Active Publication Date: 2015-12-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The host disconnects all PCIe devices connected to the host, which prevents the host from performing data interaction with other devices and affects the business of the host

Method used

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  • Method and device for disconnecting link between PCIe (peripheral component interface express) equipment and host computer
  • Method and device for disconnecting link between PCIe (peripheral component interface express) equipment and host computer
  • Method and device for disconnecting link between PCIe (peripheral component interface express) equipment and host computer

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Embodiment Construction

[0094] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0095] The embodiment of the present invention provides an application scenario of a method for disconnecting the link between the PCIe device and the host, see Picture 1-1 , when the host is only connected to one IO device, the host is directly connected to the IO device through the RP port; when the host is connected to multiple IO devices, the host is connected to multiple IO devices through PCIeSW (Switch).

[0096] Among them, the IO device includes a PCIe device, the PCIe device includes an EP (Endpoint, end node) device, the PCIeSW includes a UP (UpstreamPort, upstream port) and multiple DPs (DownstreamPort, downstream ports), and the PCIeSW is connected to the CPU of the host through the UP, Connect to the EP device of the PCIe...

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Abstract

The invention discloses a method and a device for disconnecting a link between PCIe (peripheral component interface express) equipment and a host computer and belongs to the technical field of computers. The method comprises steps as follows: the PCIe equipment comprises end-node EP (error print) equipment, and the EP equipment is used for acquiring a type of a TLP (transaction layer packet) error between the PCIe equipment and the host computer; if the error type is a repairable error type specified in a PCIe protocol, the EP equipment counts the appearing time duration of the error type; if the time duration reaches preset time duration, the EP equipment disconnects the link with the host computer. The device comprises an acquisition module, a counting module and a disconnection module. According to the method and the device, the influence on host computer service can be reduced.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a method and device for disconnecting a link between a PCIe device and a host. Background technique [0002] With the popularity of the PCIe (Peripheral Component Interface Express, bus and interface standard) protocol, a host can be connected to multiple IO (input output, input and output) devices, and each IO device in the multiple IO devices includes a PCIe device, and the host is connected to multiple The PCIe device performs data interaction with other devices except the host through multiple PCIe devices, so as to complete the business of the host. [0003] Because the PCIe device may be abnormal during the working process, when a certain PCIe device is abnormal, because the host is not sure which PCIe device is abnormal, in order to prevent the CPU (Central Processing Unit, central processing unit) of the host from hanging up, the host will shut down Turn on all PCIe de...

Claims

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Application Information

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IPC IPC(8): G06F13/38G06F13/40G06F13/42
CPCG06F13/385G06F13/4036G06F13/4221G06F13/38H04L1/188H04L1/24G06F13/4282G06F11/0745G06F11/0757G06F2213/0026
Inventor 张浩鹏吴沛
Owner HUAWEI TECH CO LTD
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