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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10120820 B1

PDFFull Text
Date of Patent:
Nov. 06, 2018

Filed:

Oct. 30, 2017

Direct memory access transmission control method and apparatus

Applicant:

Huawei Technologies Co., Ltd., Shenzhen, CN;

Inventors:

Hao Chen, Hangzhou, CN;

Huifeng Xu, Shenzhen, CN;

Haitao Guo, Hangzhou, CN;

Assignee:

HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;

Attorney:

Conley Rose, P.C.

Primary Examiner:

Steven G Snyder

Int. Cl.
CPC ...
G06F 13/28 (2006.01); G06F 7/78 (2006.01); G06F 9/50 (2006.01); G06F 13/18 (2006.01); G06F 7/76 (2006.01); G06F 7/74 (2006.01); G06F 13/30 (2006.01);
U.S. Cl.
CPC ...
G06F 13/28 (2013.01); G06F 7/74 (2013.01); G06F 7/76 (2013.01); G06F 7/78 (2013.01); G06F 9/5038 (2013.01); G06F 13/18 (2013.01); G06F 13/30 (2013.01); G06F 2213/2802 (2013.01);
Abstract

A direct memory access (DMA) transmission control method and apparatus, where the method includes selecting a target channel for the target DMA task according to a priority corresponding to the target DMA task when a DMA transmission request for transmitting data of a target DMA task is received, querying a task type and a priority of another DMA task that has occupied a channel and a task type of the target DMA task when the other DMA task exists on the DMA channel, comparing the task type and the priority of the other DMA task that has occupied the channel with the task type and the priority of the target DMA task, and controlling data transmission on the DMA channel according to a comparison result. Hence, the urgent DMA task can be preferentially processed.

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