Invention Grant
- Patent Title: Data copying method, direct memory access controller, and computer system
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Application No.: US15197315Application Date: 2016-06-29
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Publication No.: US10540306B2Publication Date: 2020-01-21
- Inventor: Fei Shao
- Applicant: Huawei Technologies Co., Ltd.
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Leydig, Voit & Mayer, Ltd.
- Priority: CN201510374397 20150630
- Main IPC: G06F13/28
- IPC: G06F13/28 ; G06F12/0806

Abstract:
The present invention provides a data copying method, a direct memory access controller, and a computer system. The data copying method of embodiments of the present invention includes reading, by a DMA controller, target data from storage space corresponding to a source physical address of the target data by using an ACP, where the storage space corresponding to the source physical address includes a first buffer; and storing, by the DMA controller, the target data into storage space corresponding to a destination physical address of the target data by using the ACP, where the storage space corresponding to the destination physical address includes a second buffer. The embodiments of the present invention can lower CPU usage.
Public/Granted literature
- US20170004101A1 DATA COPYING METHOD, DIRECT MEMORY ACCESS CONTROLLER, AND COMPUTER SYSTEM Public/Granted day:2017-01-05
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