System and method for direct memory access buffer utilization by setting DMA controller with plurality of arbitration weights associated with different DMA engines

摘要

A DMA controller allocates space at a buffer to different DMA engines based on the length of time data segments have been stored at a buffer. This allocation ensures that DMA engines associated with a destination that is experiencing higher congestion will be assigned less buffer space than a destination that is experiencing lower congestion. Further, the DMA controller is able to adapt to changing congestion conditions at the transfer destinations.

主权项

1. A method, comprising:
assigning space at a buffer of a direct memory access (DMA) controller to a first DMA engine based on the amount of time a first data segment has been stored at the buffer, the first data segment to be transferred by the first DMA engine, the buffer to store data segments for a plurality of DMA engines including the first DMA engine.