netdev - Re: STMMAC driver with TSO enabled issue

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Date:   Fri, 25 May 2018 10:11:11 +0530
From:   Bhadram Varka <vbhadram@...dia.com>
To:     Jose Abreu <Jose.Abreu@...opsys.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Joao Pinto <Joao.Pinto@...opsys.com>
Subject: Re: STMMAC driver with TSO enabled issue

Hi Jose,

On 5/24/2018 3:01 PM, Jose Abreu wrote:
> Hi Bhadram,
> 
> On 24-05-2018 06:58, Bhadram Varka wrote:
>>
>> After some time if check Tx descriptor status - then I see only
>> below
>>
>> [..]
>> [85788.286730] 027 [0x827951b0]: 0xf854f000 0x0 0x16d8 0x90000000
>>
>> index 025 and 026 descriptors processed but not index 027.
>>
>> At this stage Tx DMA is always in below state -
>>
>> ■ 3'b011: Running (Reading Data from system memory
>> buffer and queuing it to the Tx buffer (Tx FIFO))
> 
> Thats strange, I think the descriptors look okay though. I will
> need the registers values (before the lock) and, if possible, the
> git bisect output.

Attaching the register dump file after the issue observed. Please check 
once.

-- 
Thanks,
Bhadram.

View attachment "regdump.txt" of type "text/plain" (2966 bytes)