netdev - Re: tg3: BMC stops responding in 3.0

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Message-ID: <20110926182217.GB2440@mcarlson.broadcom.com>
Date:	Mon, 26 Sep 2011 11:22:17 -0700
From:	"Matt Carlson" <mcarlson@...adcom.com>
To:	"Arkadiusz Mi??kiewicz" <a.miskiewicz@...il.com>
cc:	"Matthew Carlson" <mcarlson@...adcom.com>,
	"Michael Chan" <mchan@...adcom.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: tg3: BMC stops responding in 3.0

On Fri, Sep 23, 2011 at 12:45:50PM -0700, Arkadiusz Mi??kiewicz wrote:
> 
> Hi,
> 
> I was using 2.6.38.8 and recently tried to switch to 3.0.4 on Tyan S2891 
> platform.
> 
> This platform uses tg3:
> tg3 0000:0a:09.1: eth1: Tigon3 [partno(BCM95704) rev 2003] (PCIX:133MHz:64-
> bit) MAC address 00:e0:81:33:5e:af
> tg3 0000:0a:09.1: eth1: attached PHY is 5704 (10/100/1000Base-T Ethernet) 
> (WireSpeed[1], EEE[0])
> tg3 0000:0a:09.1: eth1: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1]
> tg3 0000:0a:09.1: eth1: dma_rwctrl[769f4000] dma_mask[64-bit]
> 
> With 2.6.38.8 everything was working fine. With 3.0.4 there is a problem. As 
> soon as tg3 module is loaded or eth0 configured (can't tell which one since 
> the machine is 400km away from me and I have no way to play with it other than 
> ipmi or ssh) BMC stops responding (so all ipmitool commands over LAN stop 
> working). Normal tg3 activity is not affected - I can ssh-in without a problem 
> etc but ipmi over lan doesn't work.
> 
> From ssh console "ipmitool lan print" works, shows data but for example after 
> "ipmitool mc reset cold" it doesn't recover - ipmitool returns "Invalid 
> channel: 255". I have to reboot to 2.6.38.8 and then issue "ipmitool mc reset 
> cold" to recover.
> 
> Any idea which tg3 change could break this? Can't bisect this due remote 
> access only.
> 
> I was hoping that maybe 9e975cc291d80d5e4562d6bed15ec171e896d69b
> "tg3: Fix io failures after chip reset" will fix things for me but no - this 
> doesn't help.

What version of the tg3 driver are you working with?

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