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From: jgunthorpe@obsidianresearch.com (Jason Gunthorpe)
To: linux-arm-kernel@lists.infradead.org
Subject: [E1000-devel] ARM support for igb driver
Date: Fri, 30 May 2014 13:18:52 -0600	[thread overview]
Message-ID: <20140530191852.GA25314@obsidianresearch.com> (raw)
In-Reply-To: <CAHH3p5+cR+AQRjxxA=AZN-P2yNSk9Qb6W0BjhAuFa7WPp38=DQ@mail.gmail.com>

On Fri, May 30, 2014 at 11:32:34PM +0530, shiv prakash Agarwal wrote:
> Finally we see that this hang occurs because some VDM is sent by
> this I210 card.  Why this card sends VDM? and how can we disable it?

> VDM = Venodor Defined Message

FWIW, when I last looked at Intel stuff in an analyzer it was sending
regular VDMs for some purpose.

Type 1 VDMs should not cause any errors, the root port should just
silently discard them.

If your root port is returning an error completion or otherwise from a
type 1 VDM then it is broken and the device would be properly
asserting DLP. Some work around would be required for that kind of HW
defect :|

I once tracked down a similar bug with VDM handling in a PCI-E
device..

Jason

  reply	other threads:[~2014-05-30 19:18 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CAHH3p5KAwyMOY=ai_h0eM+JwYLtTO8d4jVaVOWVtOakhqPRTew@mail.gmail.com>
     [not found] ` <CF7EA37A.4676A%matthew.vick@intel.com>
     [not found]   ` <CAHH3p5JFc3jgeK7OFd1rtgDS3gjRdjiPr3LwwqfyKMPGSTwMWA@mail.gmail.com>
     [not found]     ` <CF7FD060.46A87%matthew.vick@intel.com>
     [not found]       ` <CAHH3p5J8V6uWEzbCoT+x-6_2x1q=nc=_oMn0qnnj113FmeuW6A@mail.gmail.com>
     [not found]         ` <9B4A1B1917080E46B64F07F2989DADD6533627A5@ORSMSX114.amr.corp.intel.com>
     [not found]           ` <CAHH3p5KEPXw5mxP-13evd774nyO5C13ky0=fCaZPCNVx1gh3Ow@mail.gmail.com>
     [not found]             ` <CAHH3p5LaRwgdECxsO4OZSdWEhGt232yj-3347kYEStP6NLg2xg@mail.gmail.com>
     [not found]               ` <5360041A.7030005@intel.com>
     [not found]                 ` <CAHH3p5L6WM3FaZ19Tw9vUcsk+kERfBKnGC2BRtnftJR1pbSF7g@mail.gmail.com>
2014-05-05 15:28                   ` [E1000-devel] ARM support for igb driver Alexander Duyck
     [not found]                     ` <CAHH3p5KEbvziVxg-9o45-chp=6U2JnW=ffk1p85GKFyWXiX8CQ@mail.gmail.com>
2014-05-05 20:00                       ` Alexander Duyck
2014-05-05 20:38                     ` Thomas Petazzoni
2014-05-05 21:20                       ` Alexander Duyck
     [not found]                         ` <CAHH3p5L4DaORYJ8_6zMEY3ikEnABU1L0B2C6Fezb_g6dCjtr5Q@mail.gmail.com>
2014-05-06 14:58                           ` Alexander Duyck
2014-06-03 14:57                             ` Ben Dooks
2014-05-06 15:18                         ` Arnd Bergmann
2014-05-06 15:24                           ` Lucas Stach
2014-05-06 15:33                             ` Arnd Bergmann
2014-05-30 11:50                               ` shiv prakash Agarwal
2014-05-30 17:21                                 ` Alexander Duyck
2014-05-30 18:02                                   ` shiv prakash Agarwal
2014-05-30 19:18                                     ` Jason Gunthorpe [this message]
2014-05-30 19:35                                       ` shiv prakash Agarwal
2014-05-30 19:56                                         ` Arnd Bergmann
2014-05-30 20:14                                           ` shiv prakash Agarwal
2014-05-30 21:11                                             ` Fujinaka, Todd
2014-05-31 18:34                                             ` Arnd Bergmann
2014-06-01  5:56                                               ` shiv prakash Agarwal
2014-06-01 11:46                                                 ` Arnd Bergmann
2014-06-02  4:53                                                   ` shiv prakash Agarwal
2014-06-02 16:05                                                     ` Fujinaka, Todd
2014-06-03 12:33                                                       ` shiv prakash Agarwal
2014-06-03 14:49                         ` Ben Dooks
2014-06-03 15:05                           ` Arnd Bergmann
2014-06-03 15:13                             ` Ben Dooks
2014-06-03 15:23                               ` Arnd Bergmann
2014-06-03 15:31                                 ` Ben Dooks

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