Apparatus, computer program product, and system for...

Details Apparatus, computer program product, and system for... Apparatus, computer program product, and system for...

2011-01-25

2011-01-25

Kindred, Alford W (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S022000, C718S104000

Reexamination Certificate

active

07877523

ABSTRACT:
An apparatus and a computer program product are provided for completing a plurality of (direct memory access) DMA commands in a computer system. It is determined whether the DMA commands are chained together as a list DMA command. Upon a determination that the DMA commands are chained together as a list DMA command, it is also determined whether a current list element of the list DMA command is fenced. Upon a determination that the current list element is not fenced, a next list element is fetched and processed before the current list element has been completed.

REFERENCES:
patent: 6269458 (2001-07-01), Jeter et al.
patent: 6691178 (2004-02-01), Kasper
patent: 2004/0015617 (2004-01-01), Sangha et al.
patent: 2004/0187135 (2004-09-01), Pronovost et al.
patent: 2004/0210693 (2004-10-01), Zeitler et al.
patent: 2004/0243739 (2004-12-01), Spencer

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