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System Development & Application
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App. Res. of Comp. Printed Article
Vol. 42, 2025 No. 5
1480-1489

Design of verification platform for Switch subsystem of PCIe switching chip based on UVM

Zheng Rui
Shen Jianliang
Liu Dongpei
Li Zhichao
Cao Rui
Institute of Information Technology, Information Engineering University, Zhengzhou 450001, China
DOI: 10.19734/j.issn.1001-3695.2024.09.0341

Abstract

PCIe(peripheral component interconnect express) is a high-speed serial computer expansion bus standard. Designers use this standard to create PCIe switch chips that expand the number of PCIe interfaces from the PCIe channels provided by CPUs. However, as the complexity of PCIe switch chip designs increases dramatically, traditional verification platforms built on Verilog struggle to efficiently verify large verification vectors and complex Switch subsystems, lacking functional coverage models. To address these issues, this paper adopted UVM(universal verification methodology), constructing a verification platform for the Switch subsystem in PCIe switch chips. The platform employed hierarchical design, supported coverage-driven verification, and introduced efficiency optimizations compared to conventional UVM verification platforms. Specifically, the communication objects and methods of the reference model component received optimization. The comparison method and message reception ports of the ScoreBoard component underwent improvement. And based on the PCIe protocol and characteristics of the switch chip, test cases were designed after categorizing and analyzing functional points, aiming to comprehensively verify the Switch subsystem. Analysis of signal waveforms and coverage data shows that the improved verification platform achieves 96.8% code coverage and 100% functional coverage without manual filtering, with an average reduction of about 10% in simulation time. This platform significantly enhances verification efficiency, effectively supporting the verification work of PCIe switch chips and providing a reference for building related UVM verification platforms.

Foundation Support

国家重点研发计划基金资助项目

Publish Information

DOI: 10.19734/j.issn.1001-3695.2024.09.0341
Publish at: Application Research of Computers Printed Article, Vol. 42, 2025 No. 5
Section: System Development & Application
Pages: 1480-1489
Serial Number: 1001-3695(2025)05-027-1480-10

Publish History

[2025-05-05] Printed Article

Cite This Article

郑锐, 沈剑良, 刘冬培, 等. 基于UVM的PCIe交换芯片Switch子系统验证平台的设计 [J]. 计算机应用研究, 2025, 42 (5): 1480-1489. (Zheng Rui, Shen Jianliang, Liu Dongpei, et al. Design of verification platform for Switch subsystem of PCIe switching chip based on UVM [J]. Application Research of Computers, 2025, 42 (5): 1480-1489. )

About the Journal

  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

Application Research of Computers has many high-level readers and authors, and its readers are mainly senior and middle-level researchers and engineers engaged in the field of computer science, as well as teachers and students majoring in computer science and related majors in colleges and universities. Over the years, the total citation frequency and Web download rate of Application Research of Computers have been ranked among the top of similar academic journals in this discipline, and the academic papers published are highly popular among the readers for their novelty, academics, foresight, orientation and practicality.

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