Method for realizing transmission of QPI (Quick Path Interconnect) message through PCI-E (Peripheral Component Interconnect-Express) interface

A PCI-E and implementation method technology, which is applied in the field of PCI-E interface transmission of QPI messages, can solve the problems of complex protocol and high transmission rate of QPI interface, achieve low implementation difficulty, reduce hardware design complexity, and shorten project cycle. Effect

Inactive Publication Date: 2015-04-22
INSPUR GROUP CO LTD
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Problems solved by technology

At present, Intel processors use QPI interface to achieve external interconnection. The QPI interface has high...

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Embodiment Construction

[0008] The implementation method of a PCI-E interface transmission QPI message of the present invention will be described in detail below.

[0009] A kind of implementation method of PCI-E interface transmission QPI message of the present invention, adopts PCI-E interface to replace QPI physical layer, realizes the memory expansion, access and maintenance of PCI-E interface;

[0010] The design structure of PCI-E interface transmission QPI message includes: detection circuit, PCI-E interface module, PCI-E and QPI interface conversion configuration module and QPI upper logic interface module, implement QPI protocol verification in high efficiency, and QPI related chips During verification, verification efficiency can be effectively improved and hardware design complexity can be reduced.

[0011] The PCI-E interface can implement X4, X8, and X16 interface modes, and the final number of link transmission channels can be determined by the detection circuit. For example, the link ...

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Abstract

The invention provides a method for realizing transmission of a QPI (Quick Path Interconnect) message through a PCI-E (Peripheral Component Interconnect-Express) interface. The PCI-E interface is adopted instead of a QPI physical layer, so that memory expansion, access and maintenance of the PCI-E interface are realized. The design structure of the PCI-E interface for transmitting the QPI message comprises a detection circuit, a PCI-E interface module, a PCI-E and QPI interface transformation configuration module and a QPI upper-layer logic interface module. The method for realizing transmission of the QPI message through the PCI-E interface has the advantages that total mapping of various PCI-E transmission modes such as X16, X8 and X4 to a QPI transmission mode is realized through adoption of a plurality of data mapping relations, so that the usability of a system is greatly enhanced. In the development, design, verification and debugging processes of a QPI protocol relevant chip, the design difficulty and design risk of the chip can be effectively lowered, and the chip development period can be greatly shortened.

Description

technical field [0001] The invention relates to the field of integrated circuit design, in particular to a method for realizing the transmission of QPI messages by a PCI-E interface. Background technique [0002] With the rapid development of computer technology and integrated circuit technology, high-performance computer systems have increasingly become the needs of economic and social development. This requires research on server system memory expansion, multi-processor interconnection and other technologies to improve system performance. The above technologies need to develop related functional chips to achieve. At present, Intel processors use QPI interface to achieve external interconnection. The QPI interface has high transmission rate and complex protocol, which brings challenges to the design and verification of functional chips. Therefore, using mature PCI-E design technology to transmit QPI messages through the PCI-E interface can effectively reduce the difficulty...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L1/00
Inventor 王恩东胡雷钧李仁刚
Owner INSPUR GROUP CO LTD
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