PCI / PCIe Error Recovery Product Note, September 2010

Using ioscan to identify PCI Error Recovery Capability
The command ioscan -P error_recovery can be used to determine if Local Bus Adapters
(LBA) in a system support PCI Error Recovery feature. The capability of an LBA is in turn
determined by the hardware platform capability and the driver controlling the PCI adapter in
the slot under that LBA.
The possible values for error_recovery attribute as displayed by the ioscan command are:
Supported - PCI error recovery is supported on the LBA and I/O adapter under that LBA. This
is set only if both platform and all the interface card driver instances under the given LBA support
PCI error recovery functionality.
Unsupported - PCI error recovery is not supported on the LBA and I/O adapter under that LBA.
This could be because either the platform or one of the interface card driver instances under the
given LBA does not support PCI error recovery functionality.
NOTE: The error_recovery attribute display properties for the following options:
• LBAs for PCI/PCI-X slots on PA-RISC and Integrity systems
• gh2p for PCIe slots on legacy system
• PCItoPCI bridge on HP Superdome 2 platform
Example:
To look at the error recovery capability of all Local Bus Adapters (LBAs) in legacy system:
# ioscan -P error_recovery -d lba
Table 1-2 Error Recovery Attributes
Error_RecoveryH/W PathIClass
Supported0/0/00ba
Supported0/0/11ba
Supported0/0/810ba
Supported0/0/911ba
Supported0/0/1013ba
Supported0/0/1214ba
This implies that PCI error recovery is supported for I/O adapters located under LBAs like 0/0/0,
0/0/1.
Using ioscan to identify PCI Error Recovery Capability 9