CN111512293A - 一种基于dma的数据处理方法及相关产品 - Google Patents

一种基于dma的数据处理方法及相关产品 Download PDF

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Publication number
CN111512293A
CN111512293A CN201880083266.3A CN201880083266A CN111512293A CN 111512293 A CN111512293 A CN 111512293A CN 201880083266 A CN201880083266 A CN 201880083266A CN 111512293 A CN111512293 A CN 111512293A
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data
bus
dma
invalid
read
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CN111512293B (zh
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杨琰旭
牛昕宇
蔡权雄
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Shenzhen Corerain Technologies Co Ltd
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Shenzhen Corerain Technologies Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
    • G06F13/28—Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access DMA, cycle steal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
  • Bus Control (AREA)

Abstract

本发明提供一种DMA数据处理方法，所述方法应用于DMA数据处理系统，所述方法包括如下步骤：DMA控制器接收读取命令，所述读取命令包括需要读取的数据的地址；DMA控制器依据该读取命令从片外存储器中读取该读取命令对应的设定位数的第一数据，将第一数据通过第一总线发送至DMA总线数据；DMA总线数据依据数据的地址判断第一数据是否全部为有效数据，如具有无效数据，将该无效数据剔除，将有效数据缓存；当缓存的有效数据达到第二总线数据位宽时，将达到第二总线数据位宽的有效数据通过第二总线发送至后端处理器处理。本申请提供的方法具有数据处理效率高的优点。

Description

PCT国内申请，说明书已公开。

Claims (10)

  1. PCT国内申请，权利要求书已公开。
CN201880083266.3A 2018-08-14 2018-08-14 一种基于dma的数据处理方法及相关产品 Active CN111512293B (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113890783A (zh) * 2021-09-27 2022-01-04 北京微纳星空科技有限公司 一种数据收发系统、方法、电子设备及存储介质
CN117971746A (zh) * 2024-03-28 2024-05-03 深圳鲲云信息科技有限公司 用于控制直接内存访问控制器的方法及计算设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6526496B1 (en) * 1999-10-21 2003-02-25 International Business Machines Corporation Burst instruction alignment method apparatus and method therefor
US20130232296A1 (en) * 2012-02-23 2013-09-05 Kabushiki Kaisha Toshiba Memory system and control method of memory system
CN103761988A (zh) * 2013-12-27 2014-04-30 华为技术有限公司 固态硬盘及数据移动方法
CN107943726A (zh) * 2017-11-16 2018-04-20 郑州云海信息技术有限公司 一种基于PCIe接口的数据传输系统及方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1153154C (zh) * 2001-04-02 2004-06-09 华邦电子股份有限公司 直接存储器存取至通用串行总线的转换电路及传输方法
CN102135946A (zh) * 2010-01-27 2011-07-27 中兴通讯股份有限公司 一种数据处理方法和装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6526496B1 (en) * 1999-10-21 2003-02-25 International Business Machines Corporation Burst instruction alignment method apparatus and method therefor
US20130232296A1 (en) * 2012-02-23 2013-09-05 Kabushiki Kaisha Toshiba Memory system and control method of memory system
CN103761988A (zh) * 2013-12-27 2014-04-30 华为技术有限公司 固态硬盘及数据移动方法
CN107943726A (zh) * 2017-11-16 2018-04-20 郑州云海信息技术有限公司 一种基于PCIe接口的数据传输系统及方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113890783A (zh) * 2021-09-27 2022-01-04 北京微纳星空科技有限公司 一种数据收发系统、方法、电子设备及存储介质
CN113890783B (zh) * 2021-09-27 2022-07-26 北京微纳星空科技有限公司 一种数据收发系统、方法、电子设备及存储介质
CN117971746A (zh) * 2024-03-28 2024-05-03 深圳鲲云信息科技有限公司 用于控制直接内存访问控制器的方法及计算设备

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