From: Nix <nix@esperi.org.uk>
To: "Wyborny\, Carolyn" <carolyn.wyborny@intel.com>
Cc: Chris Boot <bootc@bootc.net>,
"e1000-devel\@lists.sourceforge.net"
<e1000-devel@lists.sourceforge.net>,
netdev <netdev@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [E1000-devel] e1000e interface hang on 82574L
Date: Mon, 19 Mar 2012 17:31:14 +0000 [thread overview]
Message-ID: <87ehsov6ot.fsf@spindle.srvr.nix> (raw)
In-Reply-To: <9BBC4E0CF881AA4299206E2E1412B6260E512FB9@ORSMSX102.amr.corp.intel.com> (Carolyn Wyborny's message of "Mon, 19 Mar 2012 16:29:03 +0000")
On 19 Mar 2012, Carolyn Wyborny said:
>>you'll see that I tested that, and it doesn't work :( even if it did
>>work, it shouldn't be needed: the driver attempts to turn off PCIe ASPM
>>on affected NICs, and fails, apparently because *something* turns it
>>back on again.
>>
> The driver attempts to disable L0s state, not the entire feature. It
It tries to disable L1 state as well (or it did when I tested this last,
although I suspect you're right and it may leave L1 turned on these
days: judging by the contents of e1000_82574_info, anyway.)
> is also required that the device upstream on the bus from the 82574L
> have this disabled. Yes, I agree there appears to be something in the
> os that either ren-enables or fails to disable the feature on the
> upstream device, as desired. Platforms/systems also appear to vary in
> this regard, so the solutions may vary a bit as well.
>
> Its worth trying your solution as well if what I suggested doesn't
> work, but there is not one solution that fits all, unfortunately.
I don't *have* a solution. :( 'setpci by hand some unknown amount of
time after booting once the interface has stabilized' hardly counts as a
solution of any sort. It's, at best, a workaround that lets me use my
systems without hourly lockups until a real solution is found.
(To clarify: manual setpci to force off the ASPM bits is the only thing
that works for me. The driver's automatic disabling of L0s and L1
doesn't work: nor does booting with pcie_aspm=off. In both cases, I end
up with both L0s and L1 turned on, and a lockup some time later, unless
I setpci the bits off by hand.)
--
NULL && (void)
next prev parent reply other threads:[~2012-03-19 17:31 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-27 22:01 e1000e interface hang on 82574L Chris Boot
2011-12-27 22:33 ` Dave Taht
2011-12-31 9:31 ` Chris Boot
2012-01-03 0:02 ` Wyborny, Carolyn
2012-01-04 17:12 ` Chris Boot
2012-01-15 11:10 ` Chris Boot
2012-01-16 15:56 ` Wyborny, Carolyn
2012-01-16 16:04 ` Chris Boot
2012-03-17 15:59 ` Chris Boot
2012-03-17 17:54 ` Chris Boot
2012-03-17 23:50 ` [E1000-devel] " Nix
2012-03-19 14:59 ` Wyborny, Carolyn
2012-03-19 16:19 ` [E1000-devel] " Nix
2012-03-19 16:29 ` Wyborny, Carolyn
2012-03-19 17:31 ` Nix [this message]
2012-04-06 10:17 ` Chris Boot
2012-04-06 12:12 ` Bjorn Helgaas
2012-04-06 13:41 ` Henrique de Moraes Holschuh
2012-04-06 13:48 ` Chris Boot
2012-04-06 16:05 ` Nix
2012-04-06 16:04 ` Nix
2012-04-23 21:29 ` [PATCH RFC 0/2] e1000e: 82574 also needs ASPM L1 completely disabled Chris Boot
2012-04-23 21:29 ` [PATCH 1/2] e1000e: Disable ASPM L1 on 82574 Chris Boot
2012-04-23 23:18 ` [E1000-devel] " Jeff Kirsher
2012-04-24 11:08 ` Nix
2012-06-01 21:17 ` Chris Boot
2012-06-07 1:41 ` Greg KH
2012-04-23 21:29 ` [PATCH 2/2] e1000e: Remove special case for 82573/82574 ASPM L1 disablement Chris Boot
2012-04-23 23:18 ` [E1000-devel] " Jeff Kirsher
2012-04-23 23:11 ` [PATCH RFC 0/2] e1000e: 82574 also needs ASPM L1 completely disabled Jesse Brandeburg
2012-04-29 16:45 ` Nix
2012-04-29 18:03 ` Chris Boot
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