Re: [RFC][PATCH 000 of 3] MD Acceleration and the ADMA interface:Introduction

[Jeff Garzik]

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 
controllers.

	Jeff



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