linux-kernel - Re: [PATCH 08/19] dmaengine: enable multiple clients and operations

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Message-ID: <adairjt3nz4.fsf@cisco.com>
Date:	Mon, 11 Sep 2006 17:52:47 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	"Dan Williams" <dan.j.williams@...el.com>
Cc:	"Jeff Garzik" <jeff@...zik.org>, neilb@...e.de,
	linux-raid@...r.kernel.org, akpm@...l.org,
	linux-kernel@...r.kernel.org, christopher.leech@...el.com
Subject: Re: [PATCH 08/19] dmaengine: enable multiple clients and operations

    Jeff> Are we really going to add a set of hooks for each DMA
    Jeff> engine whizbang feature?

    Dan> What's the alternative?  But, also see patch 9 "dmaengine:
    Dan> reduce backend address permutations" it relieves some of this
    Dan> pain.

I guess you can pass an opcode into a common "start operation" function.

With all the memcpy / xor / crypto / etc. hardware out there already,
we definitely have to get this interface right.

 - R.
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