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Re: PCI interrupt problem: e1000 & Super-Micro X6DVA motherboard

Subject: Re: PCI interrupt problem: e1000 & Super-Micro X6DVA motherboard
From: Ben Greear <greearb@xxxxxxxxxxxxxxx>
Date: Thu, 24 Mar 2005 11:38:28 -0800
Cc: "'netdev@xxxxxxxxxxx'" <netdev@xxxxxxxxxxx>, linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>, Lennert Buytenhek <buytenh@xxxxxxxxxxxxxx>
In-reply-to: <20050324081003.GA23453@xxxxxxxxxxxxxxxxx>
Organization: Candela Technologies
References: <42421FF2.7050501@xxxxxxxxxxxxxxx> <20050324081003.GA23453@xxxxxxxxxxxxxxxxx>
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Lennert Buytenhek wrote:
On Wed, Mar 23, 2005 at 06:03:30PM -0800, Ben Greear wrote:

I have two 4-port e1000 NICs in the system, on a riser card.

How is the riser card wired?  F.e. does it have a single edge
connector, and provides two PCI slots, or does it have a tiny
additional edge connector that routes REQ#/GNT#/INTx from a
nearby PCI slot, etc.?

I was able to reproduce the problem even when the 4-port e1000 NIC
is plugged directly into the motherboard, so it's not the

I also tried with a 4-port VIA-Rhine NIC (router-board 44).  It also
fails it's third interface, with the same problem.  So, it is not
the e1000 NIC nor the e1000 driver that is the problem.

I do notice that it is the same interrupt (26) that is always assigned
to the broken port.  I have the lspci and dmesg output for the via-rhine
boot if anyone wants it...


Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc

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