Method to preserve ordering of read and write operations in a DMA system by delaying read access

A method, system and computer program product for handling write requests in a data processing system is disclosed. The method comprises receiving on an interconnect bus a first write request targeted to a first address and receiving on the interconnect bus a subsequent second write request targeted...

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Bibliographic Details
Main Authors FIELDS JAMES S.JR, WRIGHT KENNETH L, DALY GEORGE W.JR, UMBARGER PAUL K
Format Patent
LanguageEnglish
Published 10.08.2006
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A method, system and computer program product for handling write requests in a data processing system is disclosed. The method comprises receiving on an interconnect bus a first write request targeted to a first address and receiving on the interconnect bus a subsequent second write request targeted to a subsequent second address. The subsequent second write request is completed prior to completing the first write request, and, responsive to receiving a read request targeting the second address before the first write request has completed, data associated with the second address of the second write request is supplied only after the first write request completes.
Bibliography:Application Number: US20050054403