DMA prefetch

Details DMA prefetch DMA prefetch

2006-03-07

2006-03-07

Huynh, Kim (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S003000, C710S029000, C710S031000, C710S033000, C711S213000, C712S028000

Reexamination Certificate

active

07010626

ABSTRACT:
A method and an apparatus are provided for prefetching data from a system memory to a cache for a direct memory access (DMA) mechanism in a computer system. A DMA mechanism is set up for a processor. A load access pattern of the DMA mechanism is detected. At least one potential load of data is predicted based on the load access pattern. In response to the prediction, the data is prefetched from a system memory to a cache before a DMA command requests the data.

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