linux-kernel - RE: megaraid_sas: "FW in FAULT state!!", how to get more debug output? [BKO63661]

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Message-ID: <12176d8f15f49359898726ccede592bd@mail.gmail.com>
Date:	Tue, 30 Jun 2015 16:03:46 +0530
From:	Kashyap Desai <kashyap.desai@...gotech.com>
To:	Jean Delvare <jdelvare@...e.de>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	"Robin H. Johnson" <robbat2@...too.org>,
	Adam Radford <aradford@...il.com>,
	Neela Syam Kolli <megaraidlinux@....com>,
	linux-scsi@...r.kernel.org, arkadiusz.bubala@...n-e.com,
	Matthew Garrett <matthew.garrett@...ula.com>,
	Sumit Saxena <sumit.saxena@...gotech.com>,
	Uday Lingala <uday.lingala@...gotech.com>,
	"PDL,MEGARAIDLINUX" <megaraidlinux.pdl@...gotech.com>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	Myron Stowe <myron.stowe@...hat.com>
Subject: RE: megaraid_sas: "FW in FAULT state!!", how to get more debug
 output? [BKO63661]

Jean,

Patch is available at below repo -

git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git - b for-next

Commit id -
6431f5d7c6025f8b007af06ea090de308f7e6881

If you share megaraid_sas driver code of your tree, I can provide patch for
you.

` Kashyap

> -----Original Message-----
> From: Jean Delvare [mailto:jdelvare@...e.de]
> Sent: Monday, June 29, 2015 6:55 PM
> To: Kashyap Desai
> Cc: Bjorn Helgaas; Robin H. Johnson; Adam Radford; Neela Syam Kolli;
> linux-
> scsi@...r.kernel.org; arkadiusz.bubala@...n-e.com; Matthew Garrett; Sumit
> Saxena; Uday Lingala; PDL,MEGARAIDLINUX; linux-pci@...r.kernel.org; linux-
> kernel@...r.kernel.org; Myron Stowe
> Subject: RE: megaraid_sas: "FW in FAULT state!!", how to get more debug
> output? [BKO63661]
>
> Hi Kashyap,
>
> Thanks for the patch. May I ask what tree it was based on? Linus'
> latest? I am trying to apply it to the SLES 11 SP3 and SLES 12 kernel
> trees (based
> on kernel v3.0 + a bunch of backports and v3.12
> respectively) but your patch fails to apply in both cases. I'll try harder
> but I don't
> know anything about the megaraid_sas code so I really don't know where I'm
> going.
>
> Does your patch depend on any other that may not be present in the SLES
> 11 SP3 and SLES 12 kernels?
>
> Thanks,
> Jean
>
> Le Thursday 28 May 2015 à 19:05 +0530, Kashyap Desai a écrit :
> > Bjorn/Robin,
> >
> > Apologies for delay. Here is one quick suggestion as we have seen
> > similar issue (not exactly similar, but high probably to have same
> > issue) while controller is configured on VM as pass-through and VM
> > reboot
> abruptly.
> > In that particular issue, driver interact with FW which may  require
> > chip reset to bring controller to operation state.
> >
> > Relevant patch was submitted for only Older controller as it was only
> > seen for few MegaRaid controller. Below patch already try to do chip
> > reset, but only for limited controllers...I have attached one more
> > patch which does chip reset from driver load time for
> > Thunderbolt/Invader/Fury etc. (In your case you have Thunderbolt
> > controller, so attached patch is required.)
> >
> > http://www.spinics.net/lists/linux-scsi/msg67288.html
> >
> > Please post the result with attached patch.
> >
> > Thanks, Kashyap
>
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