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Date: Sun, 24 Feb 2002 16:46:07 -0500
From: Jeff Garzik <jgarzik@mandrakesoft.com>
Organization: MandrakeSoft
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To: Vojtech Pavlik <vojtech@suse.cz>
CC: Alan Cox <alan@lxorguk.ukuu.org.uk>,
        Martin Dalecki <dalecki@evision-ventures.com>,
        Troy Benjegerdes <hozer@drgw.net>,
        Linus Torvalds <torvalds@transmeta.com>,
        Andre Hedrick <andre@linuxdiskcert.org>,
        Rik van Riel <riel@conectiva.com.br>,
        Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Flash Back -- kernel 2.1.111
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Vojtech Pavlik wrote:
> I have some experimental IDE based code which can detect the PCI bus
> speed by doing some IDE transfers and measuring the time it takes. It
> isn't 100% reliable, though. I haven't found any other way to detect PCI
> clock reliably, unfortunately it cannot be safely guessed from the CPU
> clock or FSB clock or anything.

Maybe your code cannot detect the "right answer" perfectly, but at least
it could be useful as a sanity check, to let you know if the timings/bus
speed are wildly off...

	Jeff



-- 
Jeff Garzik      | "UNIX enhancements aren't."
Building 1024    |           -- says /usr/games/fortune
MandrakeSoft     |
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