Intel 41210 Benutzerhandbuch

Seite von 120
70
Intel
®
 41210 Serial to Parallel PCI Bridge Developer’s Manual
Error Handling
11.2.1
Error Types
PCI 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 Transactions
11.2.2.1
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. 
 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 writes
UR
Configuration write to special cycle 
conversion
Successful
Master abort
UR
Target abort
CA
NOTES:
1. In PCI mode, the Intel
®
 41210 Serial to Parallel PCI Bridge samples PERR# asserted and generates the 
UR completion.
2. PERR# is not signaled for a special cycle data parity error. SERR# is asserted instead.