70 Intel® 41210 Serial to Parallel PCI Bridge Developer’s Manual
Error Handling
11.2 .1 Erro r Typ esPCI errors are classified into two categories: fatal and non-fatal:
•Fatal errors are those that have the potential to cause data corruption. Software must be careful
to contain and escalate these errors (when needed).
•Non-fatal errors are those that do not cause any data corruption. These errors include driver
errors such as master-abort on PCI and target errors such as target-abort.
All errors on PCI are uncorrectable and are forwarded to PCI Express* as such.
The fatal class of errors includes:
•Data parity errors on PCI
•Address and attribute parity errors on PCI
The non-fatal class of errors includes:
•Target Aborts on PCI
•Master Aborts on PCI
11.2.2 Termination of Completion Required Transactions11.2.2.1 Immediate Termination on the PCI-X Interface
An immediate termination occurs when the 41210 Bridge masters a transaction on PCI or PCI-X
and receives an “immediate termination” response for that transaction. Table 29 describes the
completion-status translation for immediate terminations. The behavior described for completion-
required cycles is independent of the setting of the Master Abort Mode bit, and is also independent
of whether the cycle is exclusive (locked) or not.
Table 29. Completion-Status Translation for Immediate Terminations
PCI-X Termination PCI Express* Completion
Normal completion Successful
Normal completion with
data parity error
Memory, I/O, configuration reads Successful with poisoned TLP
Configuration, I/O writes1UR
Configuration write to special cycle
conversion2Successful
Master abort UR
Target abort CA
NOTES:
1. In PCI mode, the Intel® 41210 Serial to Parallel PCI Bridge samples PERR# asserted and gener ates the
UR completion.
2. PERR# is not signaled for a special cycle data parity error. SERR# is asserted instead.