Method to preserve ordering of read and write operations in a DMA system by delaying read access
US7243194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2005 |
| Grant date | Jul 10, 2007 |
| Priority date | — |
| Expiry date | Jan 12, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0897
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.