OPAL_PCI_GET_HUB_DIAG_DATA

#define OPAL_PCI_GET_HUB_DIAG_DATA           50

int64_t opal_pci_get_hub_diag_data(uint64_t hub_id, void *diag_buffer, uint64_t diag_buffer_len);

Fetch diagnostic data for an IO hub. This was only implemented for hardware specific to POWER7 systems, something that was only ever available internally to IBM for development purposes.

It is currently not used.

If OPAL_PCI_NEXT_ERROR error type is OPAL_EEH_IOC_ERROR and severity is OPAL_EEH_SEV_INF, then the OS should call OPAL_PCI_GET_HUB_DIAG_DATA to retreive diagnostic data to log appropriately.

Returns

OPAL_SUCCESS
Diagnostic data copied successfully
OPAL_PARAMETER
Invalid address, invalid hub ID, or insufficient space in buffer for diagnostic data.
OPAL_UNSUPPORTED
hub doesn’t support retreiving diagnostic data.
OPAL_CLOSED
No pending error.
OPAL_INTERNAL_ERROR
Something went wrong.