CN103729042A - PCIE (peripheral communication interface express) intelligent switching method based on PCIE hot plug function - Google Patents

Abstract

The invention provides a PCIE (peripheral communication interface express) intelligent switching method based on a PCIE hot plug function, which belongs to the technical field of servers. For realizing the PCIE intelligent switching design based on the PCIE hot plug function, an X16PCIE port of a CPU (central processing unit) is divided into two X8, and each X8 is switched through PCIE SWITCH; one group of X8 can be switched to PCIELANE (0-7) and also can be switched to PCIELANE (7-0), and the other group of X8 can be switched to PCIELANE (8-15) and also can be switched to PCIELANE (15-8); the configuration of the PCIE port can be automatically completed through PRNST signals of X8 and X16 of SLOTA/B; the configuration of the PCIE port customized by the user is completed through a HOTPLUGCONTROLLER and the CPU. By adopting the method, the port configuration of the CPUPCIE can be automatically adjusted according to a real external PCIE device and the requirement of the customization.

Description

A kind of PCIE intelligent switch method based on PCIE hot plug function

 

Technical field

The present invention relates to server technology neck field, specifically a kind of PCIE intelligent switch method based on PCIE hot plug function.

Background technology

The development of server technology now requires more and more higher to the IO extensibility of server, the PCIE resource of each CPU is certain, and therefore how can be flexibly effective and reasonable utilizes these resources just more and more important.The Port configuration of CPU PCIE cannot be automatically adjusted according to the demand of the actual external PCIE equipment of user and customization, thereby effective utilization of PCIE resource can not be realized.

Summary of the invention

The object of this invention is to provide a kind of PCIE intelligent switch method based on PCIE hot plug function, can according to the demand of the actual external PCIE equipment of user and customization, automatically adjust the Port configuration of CPU PCIE, realize effective utilization of PCIE resource.

Technical scheme of the present invention is:

A PCIE intelligent switch method based on PCIE hot plug function, realizes in the PCIE intelligence switched design based on PCIE hot plug function, and the X16 PCIE Port of CPU is divided into two X8, and each X8 is done and switched by PCIE SWITCH;

Wherein one group of X8 can switch to PCIE LANE(0-7), also can switch to PCIE LANE (7-0), another group X8 can switch to PCIE LANE (8-15), also can switch to PCIE LANE (15-8);

By the X8 of SLOT A/B, the PRNST signal of X16, completes PCIE Port configuration automatically;

The PCIE Port that comes completing user to customize by HOT PLUG CONTROLLER and CPU configures.

The invention has the beneficial effects as follows:

1), in Server Extension interface system, not only can be according to actual external equipment, automatically complete PCIE Port configuration, can also complete PCIE Port configuration according to the demand of customization, realize the effective and reasonable distribution of CPU PCIE resource;

2), by the method, in Server Extension interface system, not only can make the reasonable application of PCIE resource, but also can be more effectively energy-conservation.

Accompanying drawing explanation

Accompanying drawing 1 is design concept figure of the present invention;

Accompanying drawing 2 is implemented schematic diagram for automatically complete first of PCIE Port configuration by PCIE equipment;

Accompanying drawing 3 is implemented schematic diagram for automatically complete second of PCIE Port configuration by PCIE equipment.

Embodiment

With reference to the accompanying drawings, content of the present invention is described to its implementation and the course of work with instantiation.

By PCIE equipment, automatically completing PCIE Port configures:

1, when server has just started to start, by PRSNT signal, can learn the device that is inserted in an X16 of insertion on SLOT A or SLOT B as user, another SLOT is not used.Then by logic control, PCIE Port can be configured to SLOT A:PCIE LANE (0-7)+PCIE LANE (8-15), also can be configured to SLOT B:PCIE LANE (15-8)+PCIE LANE (7-0), make the device inserting can obtain abundant PCIE resource.

As shown in Figure 2, the PCIE LANE of mark (1) is the combination of SLOT A X16, the PCIE LANE of mark (2) be the combination of SLOT B X16,

2, when server has just started to start, by the detecting of PRSNT signal, can learn that user finds two device respectively above SLOT A/B, it is PCIE LANE (0-7) that logic control meeting is configured to SLOT A by PCIE Port, and SLOT B is PCIE LANE (15-8).

As shown in Figure 3, the PCIE LANE of mark (3) is SLOT A, and the PCIE LANE of mark (4) is SLOT B.

User's customization demand completes PCIE Port configuration:

1,, when server normally moves, if user does not need the function of a certain device, can reach by the function of hot plug the power supply that disconnects device completely.When function that need to this device, then started, reached the object of saving the energy.

2, when server normally moves, on SLOT A/B, there are two device to move, if user need to strengthen the function of a certain device, and while not needing the function of another device, can complete PCIE Port is configured to SLOT A:PCIE LANE (0-7)+PCIE LANE (8-15) by logic control, hot plug controller and CPU, also can be configured to SLOT B:PCIE LANE (15-8)+PCIE LANE (7-0), to reach the object of more reasonably utilizing PCIE resource.

Claims (1)

1. the PCIE intelligent switch method based on PCIE hot plug function, it is characterized in that realizing in the PCIE intelligence switched design based on PCIE hot plug function, the X16 PCIE Port of CPU is divided into two X8, each X8 is done and switched by PCIE SWITCH;

Wherein one group of X8 can switch to PCIE LANE(0-7), also can switch to PCIE LANE (7-0), another group X8 can switch to PCIE LANE (8-15), also can switch to PCIE LANE (15-8);

By the X8 of SLOT A/B, the PRNST signal of X16, completes PCIE Port configuration automatically;

The PCIE Port that comes completing user to customize by HOT PLUG CONTROLLER and CPU configures.

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