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

[Pierre Ossman <drzeus-list@drzeus.cx>]

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?

Rgds
Pierre