linux-kernel - Re: MSI failure on nForce 430 (WAS: intel 82571EB gigabit fails to see link on 2.6.20-rc5 in-tree e1000 driver (regression))

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Date:	Fri, 2 Feb 2007 17:47:26 +0100
From:	Adrian Bunk <bunk@...sta.de>
To:	Adam Kropelin <akropel1@...hester.rr.com>
Cc:	linux-pci@...ey.karlin.mff.cuni.cz,
	Auke Kok <auke-jan.h.kok@...el.com>,
	linux-kernel@...r.kernel.org
Subject: Re: MSI failure on nForce 430 (WAS: intel 82571EB gigabit fails to see link on 2.6.20-rc5 in-tree e1000 driver (regression))

On Sat, Jan 20, 2007 at 02:34:37PM -0500, Adam Kropelin wrote:
> (cc: list trimmed and thread moved to linux-pci)
> 
> I have a PCI-E e1000 card that does not see interrupts on 2.6.20-rc5 
> unless CONFIG_PCI_MSI is disabled. An e1000 maintainer indicated that 
> the PHY state is correct, it's just that the interrupt is not getting 
> thru to the kernel. Interestingly, on 2.6.19 PHY interrupts get thru ok 
> with MSI enabled (link status responds appropriately) but packet tx 
> fails with timeout errors, implying that perhaps MAC interrupts are not 
> arriving.
> 
> I've attached the contents dmesg, 'lspci -vvv', and 'cat 
> /proc/interrupts' from 2.6.20-rc5.
> 
> This is an nForce 430 based chipset on a Dell E521 which has had 
> interrupt routing issues before. Prior to 2.6.19 it had to be booted 
> with 'noapic' in order to come up at all. It also had USB lockup 
> problems until I applied the latest BIOS update (v1.1.4). So a BIOS 
> interrupt routing bug with MSI is not out of the question.
> 
> I'm happy to gather more data or run tests...

Was this regression fixed by Eric's patch that is included in -rc7?

> --Adam

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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