PCIE_DMA data transmission device, method and system

Abstract

The invention relates to a PCIE_DMA data transmission device, which comprises: an FPGA module, wherein the FPGA module is provided with a PCIE hard core, is in communication connection with a host through a PCIE interface, and is configured with a DMA transmission module, a DMA channel is arranged between the DMA transmission module and a user layer logic interface, a channel mixing sub-module inthe DMA transmission module is configured to obtain data transmitted by a receiving sub-module and distribute the data transmitted by the receiving sub-module to the DMA channel for data transmission,and the channel mixing sub-module is also configured to receive the data transmitted by each DMA channel, integrate the data transmitted by each DMA channel and send the integrated data to a sendingsub-module. According to the invention, data is transmitted in and transmitted out through a DMA channel arranged between a channel mixing sub-module and a user layer logic interface, so that free conversion between single-channel data transmission and multi-channel data transmission is achieved, and the expandability of data transmission is improved.

Description

technical field

[0001] The present application relates to the technical field of data transmission, in particular to a PCIE_DMA data transmission device, method and system. Background technique

[0002] PCIE (PCI Express) is the third-generation high-performance I / O bus, which has the advantages of fast speed and point-to-point serial transmission, so that the devices at both ends can enjoy exclusive bandwidth, and the expansion is flexible and convenient. Among them, the PCIE DMA data transmission technology effectively reduces the occupation of processor resources by data transmission through direct storage access to data, and can significantly improve system operating efficiency. However, the existing PCIE DMA data transmission technologies are basically modified based on open source DMA transmission, and the PCIE data transmission designed based on open source DMA is either single-channel transmission or multiple-channel transmission. It is difficult to freely transform...

Examples

Embodiment Construction

[0051] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0052] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0053]In addition, in order to better illustrate the present application, numerous specific details are given in the following detailed description. It should be understood by those skilled in the art that the present application may be practiced without certain specific details. In some instances, methods, means, components and circ...

technical field

[0001] The present application relates to the technical field of data transmission, in particular to a PCIE_DMA data transmission device, method and system. Background technique

[0002] PCIE (PCI Express) is the third-generation high-performance I / O bus, which has the advantages of fast speed and point-to-point serial transmission, so that the devices at both ends can enjoy exclusive bandwidth, and the expansion is flexible and convenient. Among them, the PCIE DMA data transmission technology effectively reduces the occupation of processor resources by data transmission through direct storage access to data, and can significantly improve system operating efficiency. However, the existing PCIE DMA data transmission technologies are basically modified based on open source DMA transmission, and the PCIE data transmission designed based on open source DMA is either single-channel transmission or multiple-channel transmission. It is difficult to freely transform...

Examples

Embodiment Construction

[0051] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0052] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0053]In addition, in order to better illustrate the present application, numerous specific details are given in the following detailed description. It should be understood by those skilled in the art that the present application may be practiced without certain specific details. In some instances, methods, means, components and circ...

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