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Pci fast channel device, link energy management method and system

An energy management and link technology, applied in the field of communication, can solve problems such as transmission data loss

Active Publication Date: 2013-10-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a PCI express channel device, a link energy management method, and a system to solve the above-mentioned problem that transmission data is easily lost during the PCI express channel link energy management process

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  • Pci fast channel device, link energy management method and system
  • Pci fast channel device, link energy management method and system

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Embodiment Construction

[0025] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0026] figure 1 It is a flowchart of an embodiment of the PCI express link energy management method of the present invention, such as figure 1 As shown, the method of this embodiment includes:

[0027] Step 101: The first device obtains adjustment information for adjusting the current rate and / or bit width of the PCI express link.

[002...

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Abstract

Disclosed in the embodiments of the present invention are a device, link energy management method and link energy management system for Peripheral Component Interconnect (PCI) express. The PCI express link energy management method comprises: a first device obtains the adjustment information for performing adjustment processing on the current rate and / or bit width of the PCI express link; the first device stops data transmission and clears a master device enable bit of a configuration space command register belonging to a second device at the opposite end of the link, so that the second device stops data transmission after the current data transmission is finished; the first device performs adjustment processing on the rate and / or bit width of the link based on the adjustment information; the first device resumes the data transmission and resets the master device enable bit, so that the first device and the second device re-transmit / re-receive data with the adjusted rate and / or bit width. The embodiments of the present invention ensure that the link service is not affected when the PCI express device achieves link dynamic adjustment in link energy management.

Description

Technical field [0001] The present invention relates to communication technology, in particular to a PCI fast channel device, a link energy management method and system. Background technique [0002] Peripheral Component Interconnect Express (Peripheral Component Interconnect Express, referred to as: PCI Express Channel) provides a high-speed point-to-point serial communication link for PCI Express Channel devices. PCI Express Channel is used for data-intensive multimedia and high-speed local area networks. While the application provides sufficient bandwidth, it also faces the problem of energy management in the link. [0003] The power consumption in the PCI fast path link increases with the increase of the link bandwidth, and the link bandwidth is related to the transmission rate and bit width of the link. When the business traffic in the link is small, high bandwidth is not required. , The bandwidth of the link can be reduced by reducing the transmission rate or bit width of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L1/00
CPCH04L12/40G06F1/3278G06F13/4018G06F13/4022G06F13/4282G06F2213/0026Y02D10/00G06F1/3253
Inventor 李延松
Owner HUAWEI TECH CO LTD