netdev - Re: tg3: transmit timed out, resetting

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Message-ID: <CABawtvPpaNCb00KQ1yuX2ytAhEeZ8DrYsK6VqfGo=ZOz66bMOA@mail.gmail.com>
Date:	Fri, 8 Jun 2012 09:24:11 +0800
From:	Ethan Zhao <ethan.kernel@...il.com>
To:	Matt Carlson <mcarlson@...adcom.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Christian Kujau <lists@...dbynature.de>,
	LKML <linux-kernel@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>
Subject: Re: tg3: transmit timed out, resetting

Matt,
   I notice there are some AER errors ( UnsupReq+,RxErr+) with the tg3
from Christian'  lspci output,  do you know why and how to clear them ?

UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF-
MalfTLP- ECRC- UnsupReq+ ACSViol-
CESta:  RxErr+ BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+

Thanks,
Ethan

On Fri, Jun 8, 2012 at 6:56 AM, Matt Carlson <mcarlson@...adcom.com> wrote:
> On Wed, Jun 06, 2012 at 12:52:32PM +0800, ethan zhao wrote:
>> Eric,
>>   That is ask for confirmation from Matt Carlson of Broadcom.
>>
>> Ethan
>>
>> On Wed, Jun 6, 2012 at 12:12 PM, Eric Dumazet <eric.dumazet@...il.com> wrote:
>> > On Wed, 2012-06-06 at 10:29 +0800, ethan zhao wrote:
>> >> So no way to fix it via firmware update or Linux driver ? :<
>> >
>> > Yes, but you need to cooperate, or else it might take more time than
>> > necessary.
>> >
>> > Asking questions like that on lkml is not going to help very much.
>> >
>> > So, once again, we kindly ask you try a recent kernel and post
>> > register dump and some additional information when transmit timeouts
>> > happen.
>> >
>> > The 'latest kernel' is either linux-3.5.rc1, or one of David Miller
>> > tree :
>> >
>> > http://git.kernel.org/?p=linux/kernel/git/davem/net-next.git;a=summary
>> >
>> > or
>> >
>> > http://git.kernel.org/?p=linux/kernel/git/davem/net.git;a=summary
>> >
>> > Thanks
>
> Does the following patch fix your problem?
>
>
> [PATCH] tg3: Apply short DMA frag workaround to 5906
>
> 5906 devices also need the short DMA fragment workaround.  This patch
> makes the necessary change.
>
> Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
> ---
>  drivers/net/ethernet/broadcom/tg3.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
> index d55df32..2db4d70 100644
> --- a/drivers/net/ethernet/broadcom/tg3.c
> +++ b/drivers/net/ethernet/broadcom/tg3.c
> @@ -14275,7 +14275,8 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
>                }
>        }
>
> -       if (tg3_flag(tp, 5755_PLUS))
> +       if (tg3_flag(tp, 5755_PLUS) ||
> +           GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906)
>                tg3_flag_set(tp, SHORT_DMA_BUG);
>
>        if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
> --
> 1.7.3.4
>
>
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