ses no longer attaches

[Niclas Zeising]

On 2019-08-28 01:45, Michael Butler wrote:
> On 2019-08-27 19:41, Michael Butler wrote:
>> On 2019-08-27 19:15, Niclas Zeising wrote:
>>> On 2019-08-28 00:38, Alexander Motin wrote:
>>>> Hi.
>>>>
>>>> On 27.08.2019 18:03, Niclas Zeising wrote:
>>>>> I have an issue where the ses driver no longer attaches.  Last known
>>>>> good version was r351188, r351544 is broken.  In that interval,
>>>>> something happened.  I haven't had time to bisect yet.
>>>>
>>>> I would appreciate some details, like dmesg, error messages, etc.  On my
>>>> test systems I see no problems.
>>>>
>>>
>>> Hi!
>>> I did some more digging. r351355 is ok, while r351356 is bad.  This is
>>> Warner's (CC:d) commit to add RST support to nvme, however, I'm using a
>>> ssd drive connected to ahci.
>>>
>>> What happens is that the ses driver doesn't attach to the AHCI SGPIO
>>> enclosure.  This is on a laptop with an ssd (not an nvme) drive.  I have
>>> the same issue on another computer as well.  On the broken kernel,
>>> sesutil status complains about "No SES devices found", on the working
>>> kernel it reports "ok".
>>
>> I can confirm this behaviour (haven't checked versioning) .. working
>> kernel yields ..
>>
>> Aug 20 17:40:06 toshi kernel: ses0 at ahciem0 bus 0 scbus4 target 0 lun 0
>> Aug 20 17:40:06 toshi kernel: ses0: <AHCI SGPIO Enclosure 2.00 0001>
>> SEMB S-E-S 2.00 device
>> Aug 20 17:40:06 toshi kernel: ses0: SEMB SES Device
>> Aug 20 17:40:06 toshi kernel: ses0: ada0,pass0 in 'Slot 00', SATA Slot:
>> scbus0 target 0
>> Aug 20 17:40:06 toshi kernel: ses0: ada1,pass1 in 'Slot 01', SATA Slot:
>> scbus1 target 0
> 
> Should have been ..
> 
> Aug 20 17:40:06 toshi kernel: ahci0: AHCI v1.30 with 6 6Gbps ports, Port
> Multiplier not supported
> Aug 20 17:40:06 toshi kernel: ahcich0: <AHCI channel> at channel 0 on ahci0
> Aug 20 17:40:06 toshi kernel: ahcich1: <AHCI channel> at channel 1 on ahci0
> Aug 20 17:40:06 toshi kernel: ahcich4: <AHCI channel> at channel 4 on ahci0
> Aug 20 17:40:06 toshi kernel: ahcich5: <AHCI channel> at channel 5 on ahci0
> Aug 20 17:40:06 toshi kernel: ahciem0: <AHCI enclosure management
> bridge> on ahci0
> 
>>
>>   [ .. other stuff .. ]
>>
>> Aug 20 17:40:06 toshi kernel: ses0 at ahciem0 bus 0 scbus4 target 0 lun 0
>> Aug 20 17:40:06 toshi kernel: ses0: <AHCI SGPIO Enclosure 2.00 0001>
>> SEMB S-E-S 2.00 device
>> Aug 20 17:40:06 toshi kernel: ses0: SEMB SES Device
>> Aug 20 17:40:06 toshi kernel: ses0: ada0,pass0 in 'Slot 00', SATA Slot:
>> scbus0 target 0
>> Aug 20 17:40:06 toshi kernel: ses0: ada1,pass1 in 'Slot 01', SATA Slot:
>> scbus1 target 0
>>
>>   .. non working reports ..
>>
>> Aug 27 11:06:28 toshi kernel: ahciem0: <AHCI enclosure management
>> bridge> at channel 2147483647 on ahci0
>> Aug 27 11:06:28 toshi kernel: device_attach: ahciem0 attach returned 6
>>

Yeah, I'm seeing this also.
Regards
-- 
Niclas Zeising