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SubjectRe: [RFC][PATCH 000 of 3] MD Acceleration and the ADMA interface: Introduction
On Fri, 3 Feb 2006, 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
> driver for some hardware where specifications aren't available. I have
> found one document which list an "ADMA system address" register, with a
> width of 64 bits. What are the odds of this being something that
> conforms to said interface?

oh dear, i thought it was either Advanced or Accelerated DMA, fwiw.

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