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scsi: mpt3sas: Handle NVMe PCIe device related events generated from firmware.

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* The controller firmware sends separate events for NVMe devices and
  PCIe switches similar to existing SAS events.

* NVMe device detection, addition and removal are reported by the
  firmware through PCIe Topology Change list events.

* The PCIe device state change events are sent when the firmware
  detects any abnormal conditions with a NVMe device or switch.

* The enumeration event are sent when the firmware starts PCIe device
  enumeration and stops.

* This patch has the code change to handle the events and add/remove
  NVMe devices in driver's inventory.

Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Suganath Prabu Subramani
2017-10-31 18:02:32 +05:30
committed by Martin K. Petersen
parent 3075ac4902
commit 4318c73478
2 changed files with 495 additions and 6 deletions
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30
drivers/scsi/mpt3sas/mpt3sas_base.c
View File

@@ -663,6 +663,26 @@ _base_display_event_data(struct MPT3SAS_ADAPTER *ioc,
case MPI2_EVENT_ACTIVE_CABLE_EXCEPTION:
desc = "Cable Event";
break;
case MPI2_EVENT_PCIE_DEVICE_STATUS_CHANGE:
desc = "PCIE Device Status Change";
break;
case MPI2_EVENT_PCIE_ENUMERATION:
{
Mpi26EventDataPCIeEnumeration_t *event_data =
(Mpi26EventDataPCIeEnumeration_t *)mpi_reply->EventData;
pr_info(MPT3SAS_FMT "PCIE Enumeration: (%s)", ioc->name,
(event_data->ReasonCode ==
MPI26_EVENT_PCIE_ENUM_RC_STARTED) ?
"start" : "stop");
if (event_data->EnumerationStatus)
pr_info("enumeration_status(0x%08x)",
le32_to_cpu(event_data->EnumerationStatus));
pr_info("\n");
return;
}
case MPI2_EVENT_PCIE_TOPOLOGY_CHANGE_LIST:
desc = "PCIE Topology Change List";
break;
}
if (!desc)
@@ -6125,7 +6145,15 @@ mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc)
_base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
_base_unmask_events(ioc, MPI2_EVENT_TEMP_THRESHOLD);
_base_unmask_events(ioc, MPI2_EVENT_ACTIVE_CABLE_EXCEPTION);
if (ioc->hba_mpi_version_belonged == MPI26_VERSION) {
if (ioc->is_gen35_ioc) {
_base_unmask_events(ioc,
MPI2_EVENT_PCIE_DEVICE_STATUS_CHANGE);
_base_unmask_events(ioc, MPI2_EVENT_PCIE_ENUMERATION);
_base_unmask_events(ioc,
MPI2_EVENT_PCIE_TOPOLOGY_CHANGE_LIST);
}
}
r = _base_make_ioc_operational(ioc);
if (r)
goto out_free_resources;