Re: [PATCH V2] mpt3sas: disable ASPM for MPI2 controllers

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On Tue, Jan 17, 2017 at 4:13 AM, ojab <ojab@xxxxxxx> wrote:
> On 2017/01/16 14:03, ojab wrote:
>>
>> On 2017/01/16 13:31, Sreekanth Reddy wrote:
>>>
>>> On Mon, Jan 16, 2017 at 6:15 PM, ojab <ojab@xxxxxxx> wrote:
>>>>
>>>> On 2017/01/16 12:36, Sreekanth Reddy wrote:
>>>>>
>>>>>
>>>>> Ojab,
>>>>>
>>>>> I am checking internally with our FW team and Architect to known
>>>>> whether they aware/observed any issues similar to this (since this
>>>>> issue is nothing to do with driver).
>>>>>
>>>>> Meanwhile is it possible to provide us the PCI config space and FW
>>>>> logs when issue occurs?
>>>>
>>>>
>>>>
>>>> AFAIU FW log is enabled when `logging_level=0x3f8` is passed to the
>>>> module,
>>>> right?
>>>
>>>
>>> This is a driver logging_level. Firmware logs can be collected using
>>> UART logs.
>>
>>
>> According to the user guide (from
>>
>> https://www.broadcom.com/products/storage/host-bus-adapters/sas-9217-8i#documentation)
>> my 9217-8i requires 1.8V UART which I don't have at hand, I'll try to do
>> something on the weekend.
>> Is anything needed except connecting UART to gather required info?
>
> …actually I have compatible USB UART here. What should be done to get FW
> log? I've tried to reboot with UART connected (9600N1) but got no output.

You have to use, 115200 instead of 9600 baud rate.

Thanks,
Sreekanth

>
> //wbr ojab
>
>
>>
>> Anyway, right now various MPI2 HBAs doesn't work with ASPM enabled, so
>> can this patch be applied in the meantime while we're debugging the
>> issue further? Even if this issue can be properly fixed by FW update,
>> this workaround will be needed for HBAs with affected FW versions.
>>
>> //wbr ojab
>>
>>
>>>
>>>> Where can I find info about PCI config space?
>>>
>>>
>>> You can get PCI config space info from lspci command.
>>>
>>>>
>>>> //wbr ojab
>>>>>
>>>>>
>>>>>
>>>>> Thanks,
>>>>> Sreekanth
>>>>>
>>>>> On Mon, Jan 16, 2017 at 5:37 PM, ojab <ojab@xxxxxxx> wrote:
>>>>>>
>>>>>>
>>>>>> On 2017/01/06 15:48, Sreekanth Reddy wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Fri, Jan 6, 2017 at 7:24 AM, Martin K. Petersen
>>>>>>> <martin.petersen@xxxxxxxxxx> wrote:
>>>>>>>
>>>>>>> Matin, We need some time to review this patch. I will provide my
>>>>>>> review comments by end of next week.
>>>>>>>
>>>>>> ping?
>>>>>>
>>>>>> //wbr ojab
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Sreekanth
>>>>>>
>>>>>>
>>>>>>
>>>>>>
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