Device and method for realizing bridge connection of PC and video card based on FPGA

A graphics card and interface technology, applied in the field of electronic information, can solve problems such as inability to decipher and transplant, incapable of graphics card 3D graphics rendering, inability to meet the test requirements of panel manufacturers, etc., and achieve the effect of strong versatility

Active Publication Date: 2019-05-21
WUHAN JINGLI ELECTRONICS TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the major companies that design graphics cards (GPUs) in the world, whether it is NVIDIA or AMD, all the drivers released on PCs are closed-source, which makes it impossible for software engineers to decipher them and port them to ARM.
[0004] At present, in order to solve the above problems, various measurement equipment manufacturers can only transplant the open source graphics card drivers released by some open source organizations, such as nouveau, to ARM. However, this kind of driver is not officially released by the graphics card manufacturer, and it can only complete the most basic functions. , it is impossible for the graphics card to perform complex 3D graphics rendering, high-definition video rendering, etc., so it cannot meet the ever-increasing testing needs of panel manufacturers

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  • Device and method for realizing bridge connection of PC and video card based on FPGA
  • Device and method for realizing bridge connection of PC and video card based on FPGA

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

[0020] Since the interface between the graphics card and the PC is PCIE, the technical solution found in this invention must comply with PCI BaseSpecification Revision 3.0 specification. The PC is the ROOT Complex of PCIE, referred to as RP, and the graphics card is the Endpoint of PCIE, referred to as EP. In order to bridge the PC and the graphics card, it is necessary to realize the functions of EP and RP in FPGA (field programmable gate array) at the same time. The FPGA EP is used to communicate with the PC, and the FPGA RP is used to communicate with the graphics card. Inside the FPGA, it is necessary to use a specific bus to bridge the EP and RC, thus realizing data intercommunication.

[0021] Since the FPGA needs to imp...

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Abstract

The invention discloses a device and a method for realizing bridge connection between a PC and a display card based on an FPGA. The PCIE EP module comprises a PCIE EP module integrated on an FPGA, thePCIE EP module is used for receiving and storing information of an internal register and BAR of the display card, analyzing a TLP sent by the PC to the display card, and sending analyzed data to thePCIE RP module; The PCIE RP module is used for carrying out power-on initialization on the display card and distributing BAR resources of the display card, and is used for packaging the received dataand sending the data to the display card; And the ARM processor is used for controlling the PCIE RP module to obtain information of an internal register and BAR of the display card and sending the information to the PCIE EP module. Information simulation and data bridging are carried out on the FPGA, the EP function and the RC function can be achieved at the same time, and the method has the advantages of being free of limitation of closed source drive and high in universality.

Description

technical field [0001] The invention belongs to the technical field of electronic information, and in particular relates to a device and a method for realizing bridging between a PC and a graphics card based on an FPGA. Background technique [0002] In the field of display panel testing, the market needs a portable and miniaturized measuring device. Just plug the graphics card into the device, and the device can control the graphics card to output various video signals for measuring the display panel. This kind of test equipment needs to be separated from the PC and run on an embedded ARM system in order to achieve miniaturization and integration. [0003] To develop this measurement device, software engineers need to port the graphics card driver running on the PC to ARM. At present, the main companies that design graphics cards (GPUs) in the world, whether it is NVIDIA or AMD, all the drivers released on PCs are closed-source, which makes it impossible for software engine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/10G06F13/40
Inventor 肖哲靖
Owner WUHAN JINGLI ELECTRONICS TECH
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