Invention Grant
- Patent Title: Haltable and restartable DMA engine
- Patent Title (中): 可持续和可重新启动的DMA引擎
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Application No.: US13057469Application Date: 2009-08-05
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Publication No.: US08732382B2Publication Date: 2014-05-20
- Inventor: Mayan Moudgill , Shenghong Wang
- Applicant: Mayan Moudgill , Shenghong Wang
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Knobbe Martens Olson & Bear LLP
- International Application: PCT/US2009/052794 WO 20090805
- International Announcement: WO2010/017263 WO 20100211
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
A method is described for operation of a DMA engine. Copying is initiated for transfer of a first number of bytes from first source memory locations to first destination memory locations. Then, a halt instruction is issued before the first number of bytes are copied. After copying is stopped, a second number of bytes is established, encompassing those bytes remaining to be copied. After the transfer is halted, a quantity of the second number of bytes is identified. Quantity information is then generated and stored. Second source memory locations are identified to indicate where the second number of bytes are stored. Second source memory location information is then generated and stored. Second destination memory locations are then identified to indicate where the second number of bytes are to be transferred. Second destination memory location information is then generated and stored.
Public/Granted literature
- US20110252211A1 HALTABLE AND RESTARTABLE DMA ENGINE Public/Granted day:2011-10-13
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