Invention Grant
US07243194B2 Method to preserve ordering of read and write operations in a DMA system by delaying read access
有权
通过延迟读访问来保持DMA系统中读写操作顺序的方法
- Patent Title: Method to preserve ordering of read and write operations in a DMA system by delaying read access
- Patent Title (中): 通过延迟读访问来保持DMA系统中读写操作顺序的方法
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Application No.: US11054403Application Date: 2005-02-09
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Publication No.: US07243194B2Publication Date: 2007-07-10
- Inventor: George William Daly, Jr. , James Stephen Fields, Jr. , Paul K. Umbarger , Kenneth Lee Wright
- Applicant: George William Daly, Jr. , James Stephen Fields, Jr. , Paul K. Umbarger , Kenneth Lee Wright
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Dillon & Yudell LLP
- Agent Diana R. Gerhardt
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
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.
Public/Granted literature
- US20060179185A1 Method to preserve ordering of read and write operations in a DMA system by delaying read access Public/Granted day:2006-08-10
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