Arm Limited

Gergely Tóth

Seow Chuan Lim

Péter Czakó

Zhuoran Wang

Barnabás Sipos

Dezso Imre Novak

A direct memory access (DMA) controller comprises template storage circuitry to store at least one DMA template indicative of a DMA data access pattern. Each DMA template comprises enable indications settable to an enable state or a disable state. In response to a DMA command associated with a source address, a destination address, a source DMA template, and a destination DMA template, DMA control circuitry generates a set of DMA memory access requests to copy data from source memory system locations to destination memory system locations. The source/destination memory system locations are selected to have addresses which are offset relative to the source/destination address by offset amounts corresponding to positions of enable indications set to the enable state within the source/destination DMA template. The source/destination DMA templates allow irregular patterns of DMA accesses to be controlled in fewer DMA commands.

Direct memory access (DMA) controller issues memory access requests whereas memory locations having addresses which are offset amounts relative to destination template address

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Gergely Tóth