From: Wolfgang Grandegger <wg@grandegger.com>
To: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
netdev@vger.kernel.org, mkl@pengutronix.de,
linux-can@vger.kernel.org
Cc: linux-sh@vger.kernel.org, vksavl@gmail.com
Subject: Re: [PATCH] can: add Renesas R-Car CAN driver
Date: Tue, 12 Nov 2013 23:17:43 +0100 [thread overview]
Message-ID: <5282A907.6090404@grandegger.com> (raw)
In-Reply-To: <5282A17C.1030309@cogentembedded.com>
Hi Sergei,
On 11/12/2013 10:45 PM, Sergei Shtylyov wrote:
> Hello.
>
> On 11/09/2013 04:02 AM, Sergei Shtylyov wrote:
>
>>>>> 2. ... with short-circuited CAN high and low and doing some time later
>>>>> a manual recovery with "ip link set can0 type can restart"
>
>>>> Now we have auto recovery only. Manual recovery was tested with the
>>>> first driver version and worked.
>
>>> What do you mean with "auto recovery"? Auto recovery by the hardware or
>>> via "restart-ms <ms>"? How do you choose between "manual" and "auto"
>>> recovery?
>
>> This exact test was done with hardware auto-recovery only. No
>> "restart-ms"
>> was programmed.
>
>>>> Terminal 1:
>
>>>> root@10.0.0.104:/opt/can-utils# ./cangen -n 1 -g 1 can0
>>>> root@10.0.0.104:/opt/can-utils# ./cangen -n 1 -g 1 can0
>>>> root@10.0.0.104:/opt/can-utils# ./cangen -n 1 -g 1 can0
>>>> root@10.0.0.104:/opt/can-utils#
>
>>>> Terminal 2:
>
>>>> root@10.0.0.104:/opt/can-utils# ./candump -td -e any,0:0,#FFFFFFFF
>>>> (000.000000) can0 2000008C [8] 00 00 08 00 00 00 00 00 ERRORFRAME
>>>> controller-problem{}
>>>> protocol-violation{{tx-dominant-bit-error}{}}
>>>> bus-error
>>>> (000.021147) can0 20000144 [8] 00 00 00 00 00 00 00 00 ERRORFRAME
>>>> controller-problem{}
>>>> bus-off
>>>> restarted-after-bus-off
>
>>> Why does it get "restarted" directly after the bus-off?
>
>> Because we have hardware auto-recovery enabled.
>
>>>> (011.738522) can0 2000008C [8] 00 00 08 00 00 00 00 00 ERRORFRAME
>>>> controller-problem{}
>
>>> What controller problem? data[1] is not set for some reasom.
>
>> Not comments. Looking into it.
>
> Sorry, this has been fixed a while ago. Now the log looks like:
>
> root@10.0.0.104:/opt/can-utils# ./candump -td -e any,0:0,#FFFFFFFF
> (000.000000) can0 2000008C [8] 00 28 08 00 00 00 88 00 ERRORFRAME
> controller-problem{tx-error-warning,tx-error-passive}
Only the highest level should be reported.
> protocol-violation{{tx-dominant-bit-error}{}}
> bus-error
> error-counter-tx-rx{{136}{0}}
> (000.007578) can0 20000040 [8] 00 00 00 00 00 00 00 00 ERRORFRAME
> bus-off
> (000.091847) can0 20000100 [8] 00 00 00 00 00 00 00 00 ERRORFRAME
> restarted-after-bus-off
> (056.136722) can0 2000008C [8] 00 28 08 00 00 00 88 00 ERRORFRAME
> controller-problem{tx-error-warning,tx-error-passive}
Ditto.
Wolfgang.
next prev parent reply other threads:[~2013-11-12 22:17 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-27 22:11 [PATCH] can: add Renesas R-Car CAN driver Sergei Shtylyov
2013-09-28 0:40 ` Joe Perches
2013-09-28 0:45 ` Stephen Hemminger
2013-09-28 0:52 ` Sergei Shtylyov
2013-09-29 19:03 ` Marc Kleine-Budde
2013-10-17 21:54 ` Sergei Shtylyov
2013-10-02 6:09 ` Wolfgang Grandegger
2013-10-17 22:16 ` Sergei Shtylyov
2013-10-21 19:12 ` Wolfgang Grandegger
2013-11-09 1:02 ` Sergei Shtylyov
2013-11-09 10:53 ` Wolfgang Grandegger
2013-11-09 14:47 ` Wolfgang Grandegger
2013-11-12 21:45 ` Sergei Shtylyov
2013-11-12 22:17 ` Wolfgang Grandegger [this message]
2013-10-05 17:57 ` Wolfgang Grandegger
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