Re: sil3114 corruptions (was: Re: [PATCH 3/3] faster workaround)

[Tejun Heo <htejun@gmail.com>]

Bernd Schubert wrote:
> Hello Tejun,
> 
> On Tuesday 23 October 2007 10:08:01 you wrote:
>> Jeff Garzik wrote:
>>> Alan Cox wrote:
>>>>> 2) Once we identified, over time, the set of drives affected by this
>>>>> 3112 quirk (aka drives that didn't fully comply to SATA spec), the
>>>>> debugging of corruption cases largely shifted to the standard
>>>>> routine: update the BIOS, replace the
>>>>> cables/RAM/power/mainboard/slot/etc. to be certain of problem location.
>>>> Except for the continued series of later SI + Nvidia chipset (mostly)
>>>> pattern which seems unanswered but also being later chips I assume
>>>> unrelated to this problem.
>>> The SIL_FLAG_MOD15WRITE flag is set in sil_port_info[] is set according
>>> to the best info we have from SiI, which indicates that 3114 and 3512 do
>>> not have the same problem as the 3112.
>> I don't think this data corruption problem w/ sil3114 is related to
>> m15w.  m15w workaround slows down things quite a bit and is likely to
>> hide problems on PCI bus side.  There are reports of data corruption
>> with 3114 on nvidia (most common), via and now amd chipsets.  There's
>> one on intel too but IIRC wasn't too definite.
>>
>> According to a user, freebsd didn't have data corruption problem on the
>> same hardware.  I copied PCI FIFO setup code (ours is broken BTW) but it
>> didn't fix the problem.
>>
>> I'll try to reproduce the problem locally and hunt it down.
> 
> the problem just came up here again, as you and Jeff already guessed also with 
> the the workaround patches.
> I guess you didn't find time to look into it yet? Is there anything I can do? 
> What would you have done after reproducing it?

Jeff, any progress on testing?


-- 
tejun