What can cause the "Port unrecoverable error": bit 2 in SPn_ERR_STAT?

Eddie3909

Guru 10385 points

Is there a listing of what can cause the "Port unrecoverable error": bit 2 in SPn_ERR_STAT?

Cheers2u

over 10 years ago

0 tscheck over 10 years ago

TI__Mastermind 23525 points

Eddie,

This happens when the ackIDs get out of alignment and 4 link requests either timeout or come back with non-outstanding ackIDs. Requires software to step in and get out of any input/output errored state and recover the ackIDs.

Regards,

Travis

0 Eddie3909 over 10 years ago in reply to tscheck

Guru 10385 points

How can the port tell if the PLLs are not locking or have come out of lock?

Cheers

0 tscheck over 10 years ago in reply to Eddie3909

TI__Mastermind 23525 points

If the link partners go out of sync, there will definitely be port_ok issues temporarily at least. I would expect if that recovers, then you will have input/output errored states and depending on where packet traffic was during the event, you would see many LSU error CC and logical/transport and port errors.

Regards,

Travis

0 g.f. over 10 years ago in reply to tscheck

Guru 15510 points

Hi Travis,

Sorry for interrupting you.

I want to check whether SPn_ERR_STAT.PORT_ERR bit
get set by providing the abnomal condition of SRIO intentionally.

Is there any method to do the following which you answered in this post:
ackIDs get out of alignment and 4 link requests either timeout or come back with non-outstanding ackIDs

best regards,
g.f.

0 tscheck over 10 years ago in reply to g.f.

TI__Mastermind 23525 points

No. The ACKIDs are inserted by the physical layer, so there is no user control on setting these and trying to create the out-of-alignment situation intentionally.

Regards,

Travis

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What can cause the "Port unrecoverable error": bit 2 in SPn_ERR_STAT?