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Date: Tue, 2 Jan 2001 01:21:22 +0000
From: Matthew Wilcox <matthew@wil.cx>
To: Grant Grundler <grundler@cup.hp.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Matthew Wilcox <matthew@wil.cx>,
        parisc-linux@thepuffingroup.com
Subject: Re: [parisc-linux] ZONE_DMA
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In-Reply-To: <200101020059.QAA26152@milano.cup.hp.com>; from grundler@cup.hp.com on Mon, Jan 01, 2001 at 04:59:31PM -0800
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On Mon, Jan 01, 2001 at 04:59:31PM -0800, Grant Grundler wrote:
> o Elroy HW supports 64-bit PCI addressing (Dual Address cycle).

But, if possible, we want to avoid doing DAC as it cuts down the bandwidth
(and increases latency by a clock).  obviously, if it's a 64-bit device
and a 64-bit controller, there's no problem, but we should try to stick
to 32-bit bus addresses where possible.

-- 
Revolutions do not require corporate support.