DMA data transfer between low-overhead processor and...

Details DMA data transfer between low-overhead processor and... DMA data transfer between low-overhead processor and...

2007-11-06

2007-11-06

Peyton, Tammara (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S023000, C710S024000, C712S244000

Reexamination Certificate

active

10500116

ABSTRACT:
The present invention relates to a method and system for performing a data transfer between a shared memory (16) of a processor device (10) and a circuitry (20) connected to the processor device (10), wherein the data transfer is performed by triggering a DMA transfer of the data to the processor device, adding the DMA transfer to a transaction log, and providing the transaction log to the processor device, when the transaction log has reached a predetermined depth limit. The processor device is then informed of the DMA transfer of the transaction log, so as to be able to validate the transferred data. Thereby, significant background data movement can be provided without introducing high core overheads at the processor device (10).

REFERENCES:
patent: 4805137 (1989-02-01), Grant et al.
patent: 4959782 (1990-09-01), Tulpule et al.
patent: 6704863 (2004-03-01), Paul et al.
patent: 6708291 (2004-03-01), Kidder
patent: 0 908 830 (1999-04-01), None

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