Invention Grant
- Patent Title: Bit-mapped DMA transfer with dependency table configured to monitor status so that a processor is not rendered as a bottleneck in a system
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Application No.: US14687700Application Date: 2015-04-15
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Publication No.: US09672178B1Publication Date: 2017-06-06
- Inventor: Cyrill C. Ponce , Marizonne O. Fuentes , Gianico G. Noble
- Applicant: BiTMICRO Networks, Inc.
- Applicant Address: US CA Fremont
- Assignee: BiTMICRO Networks, Inc.
- Current Assignee: BiTMICRO Networks, Inc.
- Current Assignee Address: US CA Fremont
- Main IPC: G06F3/00
- IPC: G06F3/00 ; G06F13/00 ; G06F13/37 ; G06F13/28
Abstract:
In an embodiment of the invention, a method comprises: A method, comprising: issuing, by a Direct Memory Access (DMA) engine, an update request to a dependency table if the DMA engine has finished executing a first descriptor; and issuing, by the DMA engine, a monitoring request if the DMA engine is executing a second descriptor that depends on a completion of a data transfer so that the DMA engine can monitor a status of a selected subindex related to the data transfer, wherein the subindex is in the dependency table. In another embodiment of the invention, an apparatus comprises: a Direct Memory Access (DMA) engine configured to issue an update request to a dependency table if the DMA engine has finished executing a first descriptor, and configured to issue a monitoring request if the DMA engine is executing a second descriptor that depends on a completion of a data transfer so that the DMA engine can monitor a status of a selected subindex related to the data transfer, wherein the subindex is in the dependency table.
Information query
