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Subject: Re: how to list pci devices from userpace?  anything better than
	/proc/bus/pci/devices?
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: root@chaos.analogic.com
Cc: Chris Friesen <cfriesen@nortelnetworks.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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Date: 28 Nov 2002 16:37:55 +0000
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On Wed, 2002-11-27 at 21:41, Richard B. Johnson wrote:
> Red Hat distributions after 7.0 provide `lspci`. You still have
> to parse ASCII. FYI, it's not hard to write a 'C' program
> that directly accessed the PCI bus from its ports at 0xCF8 (index)
> and 0xCFC (data). You need to do 32-bit port accesses and you
> can set iopl(3) from user-space.

That wont work portably. lspci comes with a pci access library that uses
the kernel interfaces and does the job correctly

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