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DMA (direct memory access) coalescing

  • US 8,661,167 B2
  • Filed: 12/29/2009
  • Issued: 02/25/2014
  • Est. Priority Date: 09/17/2007
  • Status: Active Grant
First Claim
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1. A method comprising, at a device having at least one Direct Memory Access (DMA) engine:

  • determining a repeated, periodic DMA coalescing interval based, at least in part, on a time period of a power sleep state of a host platform that is calculated to permit at least a sufficient amount of power consumption savings to result;

    buffering data received at the device in a FIFO (First-In-First-Out) queue during the repeated, periodic DMA coalescing interval; and

    DMA-ing the data enqueued in the FIFO to a memory external to the device after expiration of the repeated, periodic DMA coalescing interval.

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