System and method asynchronous DMA command completion notification by accessing register via attached processing unit to determine progress of DMA command

System and method asynchronous DMA command completion notification by accessing register via attached processing unit to determine progress of DMA command

The present invention provides for asynchronous DMA command completion notification in a computer system. A command tag, associated with a plurality DMA command is generated. A DMA data movement command having the command tag is grouped with another DMA data movement command having the command tag....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TRUONG THUONG QUANG, YAMAZAKI TAKESHI, DAY MICHAEL NORMAN, JOHNS CHARLES RAY, LIU PEICHUM PETER, HOFSTEE HARM PETER
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:The present invention provides for asynchronous DMA command completion notification in a computer system. A command tag, associated with a plurality DMA command is generated. A DMA data movement command having the command tag is grouped with another DMA data movement command having the command tag. DMA commands belonging to the same tag group are monitored to see whether all DMA commands of the same tag group are completed.