b43 error under heavy load

[Rafał Miłecki]

2010/11/22 Larry Finger <Larry.Finger at lwfinger.net>:
> On 11/22/2010 12:53 PM, Michael Büsch wrote:
>> On Mon, 2010-11-22 at 12:41 -0600, Larry Finger wrote:
>>> Under heavy load with multiple streams, I'm getting errors from my BCM4312
>>> (14e4:4315) device as follows:
>>>
>>> b43-phy0 debug: TX-status contains invalid cookie: 0x0D4D
>>> b43-phy0 debug: Out of order TX status report on DMA ring 1. Expected 74, but got 76
>>> b43-phy0 debug: Out of order TX status report on DMA ring 1. Expected 74, but got 78
>>> (and continues).
>>>
>>> Clearly that cookie is garbage as it has a slot number of 0. Any suggestions on
>>> diagnostic information that I could dump to help debug this?
>>
>> I think that probably is a firmware or hardware bug. The affected
>> kernel code was not changed in years, as far as I know.
>
> Thanks. I'll see if I can figure out a way for the driver to recover more
> gracefully. In the meantime, I will be dumping the entire TX status struct to
> see if that helps in seeing what is wrong.

Larry, did you try debugging this? Juan noticed this issue on his
14e4:4315 as well.
[  854.826369] b43-phy0 debug: Out of order TX status report on DMA
ring 1. Expected 74, but got 54
[  854.827348] b43-phy0 debug: Out of order TX status report on DMA
ring 1. Expected 74, but got 56
[  854.828080] b43-phy0 debug: Out of order TX status report on DMA
ring 1. Expected 74, but got 58
[  854.831431] b43-phy0 debug: Out of order TX status report on DMA
ring 1. Expected 74, but got 60
[  854.831453] b43-phy0 debug: Out of order TX status report on DMA
ring 1. Expected 74, but got 62
[  854.832440] b43-phy0 debug: Out of order TX status report on DMA
ring 1. Expected 74, but got 64
[  854.833836] b43-phy0 debug: Out of order TX status report on DMA
ring 1. Expected 74, but got 66
[  854.834567] b43-phy0 debug: Out of order TX status report on DMA
ring 1. Expected 74, but got 68
[  854.834588] b43-phy0 debug: Out of order TX status report on DMA
ring 1. Expected 74, but got 70
[  854.835378] b43-phy0 debug: Out of order TX status report on DMA
ring 1. Expected 74, but got 72

Connection is lost, reloading of the driver is needer.

-- 
Rafał