Equipment enumeration method and device of PCIe interface, equipment and storage medium

Abstract

The invention discloses an equipment enumeration method and device of a PCIe interface, computer equipment and a computer readable storage medium. The method comprises the steps: a PCIe equipment end detecting the physical link state of the PCIe interface in a kernel stage of startup; when the physical link state is that the connection is not established, detecting a preset enumeration signal through the PCIe interface and keeping equipment enumeration resources not released, and continuing to finish the startup of the PCIe equipment end; after a preset enumeration signal sent by a PCIe host end is detected, utilizing the equipment enumeration resources to complete the enumeration of the PCIe interface with the PCIe host end. According to the method, the situation that enumeration cannot be completed when the enumeration of power-on startup of the PCIe equipment end is missed is avoided; and by detecting the preset enumeration signal, the PCIe host end can complete synchronous enumeration at any time, so that strong dependence on different host architectures is avoided, and the time sequence control requirement on the PCIe host end is reduced.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a device enumeration method and device for a PCIe interface, a computer device, and a computer-readable storage medium. Background technique [0002] With the development of science and technology in modern society, high-speed communication technology between computers (PC) has been widely used. The PCIe (peripheral component interconnect express, a high-speed serial computer expansion bus standard) interface was first used for the expansion slot interface on the PC to transmit data between devices with high-speed interfaces; with the advent of the 5G era, in order to better To meet the needs of the network for large data transmission, the 5G communication module needs to use the PCIe interface for data transmission, and the hardware characteristics of the PCIe interface determine the characteristics of its high-speed communication interface. [0003] The hardware...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the device enumeration of the PCIE interface is as follows: figure 1 As shown, for each specific host, it is required to complete the device enumeration during the power-on and start-up process of the PCIe device; if the enumeration of the power-on and start-up of the PCIe device is missed, the corresponding resources (such as clock resources ), the enumeration can no longer be completed, and the timing requirements for the PCIe host side are relatively high; and each time a different type of PCIe host side is adapted, cumbersome and time-consuming debugging is required, and the timing of each debugging is not compatible with all different The application of different scenarios on the PCIe host side greatly increases labor costs and low efficiency

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