IDT 89HPES48T12G2, User Manual

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IDT Theory of Operation
PES48T12G2 User Manual 8 - 13 April 5, 2013
Notes
Transaction Layer Error Pollution
Per section 6.2.3.2.3 of the PCI Express Base Specification Revision 2.0, transaction layer errors may
be prioritized to prevent error pollution in AER. Error pollution rules only apply to errors associated with the
reception of a TLP. Errors not associated with the reception of a TLP are logged for each occurrence of the
error.
The PES48T12G2 does not apply error pollution rules to internal errors detected by the device, even
when such errors are associated with the reception of a TLP. As a result, it is possible that more than one
AER error be logged on reception of a TLP which causes an internal error. For example, reception of a
poisoned TLP which causes an internal double-bit ECC error in a port’s ingress buffer memory would result
in the poisoned and internal errors logged in the ingress port’s AER capability structure.
ACS Check
PCI
Express
Specifica-
tion
1
Section
1.
Refer to PCI Express Base 2.0 specification.
Role Based
(Advisory)
Error
Reporting
Condition
Action Taken
ACS Source Validation 6.12.1.1 Advisory when
the correspond-
ing error is con-
figured as non-
fatal in the
AERUESV reg-
ister and an
ACS violation is
detected on a
non-posted
request If TLP is a non-posted request, a completion
with ‘completer abort’ status is generated. Note
that this is not considered a completer abort
error in AER.
The Signaled Target Abort (STAS) bit is set in
the SECSTS register.
Non-advisory case: uncorrectable error pro-
cessing.
Advisory case: correctable error processing.
TLP header logged in AER.
The offending TLP is dropped.
ACS Translation Block-
ing Advisory when
the correspond-
ing error is con-
figured as non-
fatal in the
AERUESV reg-
ister and an
ACS violation is
detected on a
non-posted
request If TLP is a non-posted request, a completion
with ‘completer abort’ status is generated and
Signaled Target Abort (STAS) bit is set in the
SECSTS register. Note that this is not consid-
ered a completer abort error in AER.
Non-advisory case: uncorrectable error pro-
cessing.
Advisory cases: correctable error processing.
TLP header logged in AER.
The offending TLP is dropped.
ACS Peer-to-Peer
Egress Control Advisory when
the correspond-
ing error is con-
figured as non-
fatal in the
AERUESV reg-
ister and an
ACS violation is
detected on a
non-posted
request If TLP is a non-posted request, a completion
with ‘completer abort’ status is generated and
Signaled Target Abort (STAS) bit is set in the
SECSTS register. Note that this is not consid-
ered a completer abort error in AER.
Non-advisory case: uncorrectable error pro-
cessing.
Advisory cases: correctable error processing.
TLP header logged in AER.
The offending TLP is dropped.
ACS Direct Translated
Peer-to-Peer (Refer to the
next column) Offending TLP is subject to ACS Peer-to-Peer
Egress Control and ACS Peer-to-Peer Request
Redirect rules.
Table 8.13 ACS Violations for Ports Operating in Downstream Switch Port Mode