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Date: Tue, 04 Mar 2003 20:37:05 +0100
From: Ron Arts <raarts@netland.nl>
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To: Linus Torvalds <torvalds@transmeta.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>, raarts@office.netland.nl,
       david.knierim@tekelec.com, alexander@netintact.se,
       Donald Becker <becker@scyld.com>, Greg KH <greg@kroah.com>,
       jamal <hadi@cyberus.ca>, Jeff Garzik <jgarzik@pobox.com>,
       kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org,
       Robert Olsson <Robert.Olsson@data.slu.se>
Subject: Re: PCI init issues
References: <Pine.LNX.4.44.0303041046370.1426-100000@home.transmeta.com>
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Linus Torvalds wrote:
> On Tue, 4 Mar 2003, Ivan Kokshaysky wrote:
> 
>>Indeed, looks like only pin 0 (INT_A of that card) is connected. :-(
> 
> 
> Well, I'd say it looks like the MP table _claims_ that only pin0 is 
> connected. Remember: the claim was that this machine worked on WinXP.
> 

Well, I submitted the dmseg and messages because Jamal requested
it (same motherboard, same 4-port card and same strange IRQ
assignments), but this particular machine is not tested with XP,
and I don't think we have that.
I think we still have a disk with Win2000 on it. Would that help?

Should have to wait until tomorrow though, I'm on Central European Time,
and the machine is located elsewhere.

Ron


> So there are at least two potential reasons for that:
> 
>  - The MP table is simply wrong, and WinXP gets the routing information 
>    from somewhere else (ie most likely ACPI)
> 
>  - The MP table is right, and only pin0 is connected, and WinXP only uses 
>    pin0 (ie it puts the card in some state where all irqs are shared 
>    across all of the four tulip chips).
> 
> Maybe somebody can come up with other schenarios.
> 
> It would be interesting to hear what "Device Manager" (or whatever it is
> called) unde WinXP claims the interrupts are on this machine... Are they
> all on irq 48 on XP too? Or has XP gotten magic knowledge somewhere
> (ACPI?) and they are on different irq's?
> 
> 		Linus


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