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    SubjectRe: [RFC][PATCH 000 of 3] MD Acceleration and the ADMA interface: Introduction
    Pierre Ossman wrote:
    > Dan Williams wrote:
    >>The ADMA (Asynchronous / Application Specific DMA) interface is proposed
    >>as a cross platform mechanism for supporting system CPU offload engines.
    >>The goal is to provide a unified asynchronous interface to support
    >>memory copies, block xor, block pattern setting, block compare, CRC
    >>calculation, cryptography etc. The ADMA interface should support a PIO
    >>fallback mode allowing a given ADMA engine implementation to use the
    >>system CPU for operations without a hardware accelerated backend. In
    >>other words a client coded to the ADMA interface transparently receives
    >>hardware acceleration for its operations depending on the features of
    >>the underlying platform.
    > I'm wondering, how common is this ADMA acronym? I've been writing a MMC

    In ATA land, ADMA is a hardware ATA controller interface, similar to
    AHCI. We even have a pdc_adma (Pacific Digital ADMA) driver in the
    tree, and NVIDIA uses a variant of the ADMA interface in their SATA


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