PCIe link width dynamic configuration method, apparatus and device, and readable medium

A dynamic configuration and link technology, applied in the field of cloud computing data, can solve the problems that the motherboard cannot meet customer needs, etc., and achieve the effect of improving dynamic expansion capabilities, improving product competitiveness, and increasing adaptability

Inactive Publication Date: 2022-01-28
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology helps support the dynamically changing size of interfaces on an ExpressCard that can be used for various applications such as communication between servers or storage devices. It allows more efficient utilization of available bandwidth by allowing multiple types of connections (PCI) within one card without affecting other ones).

Problems solved by technology

There currently exist technical challenging issues related to storing and serving multiple types of memory cards together within one computer chassis without requiring changes made at both ends due to different configurations options provided by the processor.

Method used

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  • PCIe link width dynamic configuration method, apparatus and device, and readable medium
  • PCIe link width dynamic configuration method, apparatus and device, and readable medium
  • PCIe link width dynamic configuration method, apparatus and device, and readable medium

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Embodiment Construction

[0027]In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0029] Based on the above purpose, the first aspect of the embodiments of the present invention proposes an embodiment of a method for dynamically configuring the width of a PCIe link. figure 1 What is shown is a schematic diagram of an embodiment of th

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Abstract

The invention discloses a PCIe link width dynamic configuration method, which comprises the following steps: acquiring link channel width information of an interface, and storing the link channel width information in a CPLD register; reading link channel width information in the CPLD register in response to the initial configuration of the link channel width of the root complex, and configuring the link channel width for the root complex according to the link channel width information; in response to the initial configuration of the link channel width of the PCIe switch, reading the link channel width information in the CPLD register, and judging whether the interface channel width of the down link of the PCIe switch is consistent with the link channel width information or not; and if the interface channel width of the PCIe switch downlink is inconsistent with the link channel width information, modifying the configuration of the channel width of the PCIe switch downlink according to the link channel width information. The invention further discloses a corresponding device and apparatus and a readable storage medium. Dynamic configuration of interface cards with different link widths is supported, PCIe channel resources are fully utilized, and product competitiveness is improved.

Description

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Claims

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Application Information

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Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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