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Date: Fri, 4 Jan 2002 14:05:38 -0500
From: "Eric S. Raymond" <esr@thyrsus.com>
To: Vojtech Pavlik <vojtech@suse.cz>
Cc: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>,
        Alan Cox <alan@lxorguk.ukuu.org.uk>,
        David Woodhouse <dwmw2@infradead.org>, Dave Jones <davej@suse.de>,
        Lionel Bouton <Lionel.Bouton@free.fr>,
        Linux Kernel List <linux-kernel@vger.kernel.org>
Subject: Re: ISA slot detection on PCI systems?
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Vojtech Pavlik <vojtech@suse.cz>:
> And of course, there will be a huge amount of false positives, because
> all the new chipsets have an ISA bridge built into the southbridge chip
> and it is there even when no ISA slots are present.

Yeah.  That's what makes the lspci approach unusable for my purposes.

The approach I want to take is this:

1. Get guaranteed access to the DMI data, either via a /{proc,sys}/dmi
   or /var/run/dmi initialized at boot time.

2. Develop an exception list of mobos that have ISA slots that don't
   show up under DMI.

My logic would then be: if the box has PCI, and DMI shows no ISA slots,
and the motherboard is not on the exception list, then suppress ISA 
questions.

This would be a kluge, but it would have the advantage that the exception
list is finite and can be expected to stop growing.
-- 
		<a href="http://www.tuxedo.org/~esr/">Eric S. Raymond</a>

The end move in politics is always to pick up a gun.
	-- R. Buckminster Fuller
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