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From: "Brandeburg, Jesse" <jesse.brandeburg@intel.com>
To: "Jesse Brandeburg" <jesse.brandeburg@gmail.com>,
	"Allen Parker" <parker@isohunt.com>
Cc: <linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>,
	"Kok, Auke-jan H" <auke-jan.h.kok@intel.com>,
	<linux-pci@atrey.karlin.mff.cuni.cz>
Subject: RE: intel 82571EB gigabit fails to see link on 2.6.20-rc5 in-tree e1000 driver (regression)
Date: Tue, 16 Jan 2007 12:02:49 -0800	[thread overview]
Message-ID: <36D9DB17C6DE9E40B059440DB8D95F5201A78A3B@orsmsx418.amr.corp.intel.com> (raw)
In-Reply-To: <4807377b0701161118g7f15f201yea4a4c16c252a864@mail.gmail.com>

added Linux-pci

Jesse Brandeburg wrote:
> On 1/16/07, Allen Parker <parker@isohunt.com> wrote:
>> Allen Parker wrote:
>>> I have a PCI-E pro/1000 MT Quad Port adapter, which works quite well
>>> under 2.6.19.2 but fails to see link under 2.6.20-rc5. Earlier
>>> today I reported this to e1000-devel@lists.sf.net, but thought I
>>> should get the word out in case someone else is testing this kernel
>>> on this nic chipset. 
> 
> Upon some further investigation with Allen, I got this info, and it
> appears that his system is not freeing MSI irq's correctly.
> 
> from our discussion:
>> Allen wrote:
>>> Jesse Brandeburg wrote:
>>> I believe you may have an interrupt delivery problem, due to kernel
>>> changes.  When you don't get interrupts delivered correctly, you may
>>> not achieve link up.
>>> 
>>> you can try disabling CONFIG_PCI_MSI in the kernel, as another
>>> trouble shooting step.  Also, what model motherboard/machine are you
>>> using, and please check to make sure your BIOS is up to date.
>> 
>> CONFIG_PCI_MSI seems to fix it as well, however, i'm not sure about
>> possible performance implications with leaving it turned off.
>> 
>> Tyan S2927G2NR w/ 2x Opteron 2210 bios rev 1.02 iirc
> 
> Also, here is an excerpt of his his proc/interrupts
> Allen Parker wrote:
>        CPU0       CPU1       CPU2       CPU3
> 498:      1          8        129       8723   PCI-MSI-edge      eth3
> 499:      0         42        122      17135   PCI-MSI-edge      eth2
> 500:      0         19        275    1418326   PCI-MSI-edge      eth1
> 501:      0          0          0          0   PCI-MSI-edge      eth1
> 502:      0        414         26      25227   PCI-MSI-edge      eth1
> 503:      0         37        264    1418695   PCI-MSI-edge      eth0
> 504:      0          0          0        139   PCI-MSI-edge      eth0
> 505:      0          6        714      22806   PCI-MSI-edge      eth0
> NMI:    275        207        225        262
> LOC:3531851    3531829    3531805    3531778
> ERR:      0
> 
> The disturbing bit is that on this Hypertransport to PCIe system, his
> interrupts appear to be getting registered multiple times on different
> IRQ numbers.
> 
> help?

  reply	other threads:[~2007-01-16 20:03 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-16  7:20 82571EB gigabit on e1000 in 2.6.20-rc5 Allen Parker
2007-01-16 16:17 ` intel 82571EB gigabit fails to see link on 2.6.20-rc5 in-tree e1000 driver (regression) Allen Parker
2007-01-16 16:48   ` Auke Kok
2007-01-16 19:18   ` Jesse Brandeburg
2007-01-16 20:02     ` Brandeburg, Jesse [this message]
2007-01-18  0:04 Adam Kropelin
2007-01-17 23:56 ` Auke Kok
2007-01-19 23:15   ` Adam Kropelin
2007-01-19 23:37     ` Auke Kok
2007-01-20  0:26       ` Adam Kropelin
2007-01-20  0:38         ` Auke Kok

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