Data transmission method and system and computer readable storage medium

Abstract

The invention provides a data transmission method and system and a computer readable storage medium, the method is applied to the data transmission system, the system comprises a host device, a to-be-transmitted device and a transmission initiating device, the to-be-transmitted device and the transmission initiating device are PCIe devices, the host device can hold an initial configuration table containing device information of the to-be-transmitted device, and the initial configuration table contains the device information of the to-be-transmitted device. The table is sent to transmission initiating equipment for selection and improvement; the transmission initiating equipment fills in necessary information for establishing transmission in the initial configuration table of the target equipment according to own requirements, and returns the obtained complete configuration table to the host equipment; the host device configures the target device by using the complete information table, and returns the complete information table to the transmission initiating device after the configuration is completed, so that the transmission initiating device autonomously performs PCIe point-to-point transmission with the target device; in some embodiments, a transmission initiating device may be assisted by a host device to configure a target device to ensure that a PCIe device may enable autonomous point-to-point transmission between devices.

Description

technical field [0001] The present invention relates to the field of device communication, in particular to a data transmission method, system and computer-readable storage medium. Background technique [0002] In the PCIe bus system (Peripheral component interconnect express, high-speed serial computer expansion bus standard), data transmission can usually be performed between endpoint devices (EP, Endpoint) on the bus under the control of the host device CPU, such as traditional PCIe point-to-point Data transmission (PCIe P2P) allows two endpoint devices to perform data transmission under the control of the host device, and the host device handles operations such as interruptions during data transmission. However, the above-mentioned PCIe point-to-point data transmission process tends to increase the data transmission delay between endpoint devices. At the same time, this process also requires the host device to install supporting transmission software, which easily increa...

AI Technical Summary

Problems solved by technology

However, the migration brings new problems, that is, if the endpoint device that needs to initiate the transmission wants to communicate with the target endpoint device, it needs to obtain relevant device information in the Configuration Space of the target endpoint device and perform related configurations. However, the endpoint device cannot actually access the configuration space of another endpoint device, which makes the transmission initiator device unable to obtain and configure the device information of the target endpoint device, and thus cannot carry out the subsequent PCIe point-to-point data transmission process

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