[SCSI] mptfusion: bug fix's for raid components adding/deleting

This patch handles case where raid hidden components
are not being removed when power turned off to device
attached to expander, as well as the case of
exposing raid components when power is turned back on
to devices attached to an expander.  (This is a repost
of this patch, with  mptsas_is_end_device declared
further up in the code.)

This patch contains some other miscellaneous bug fix's.

Signed-off-by: Eric Moore <Eric.Moore@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 71 insertions, 28 deletions

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index e9716b10ace..af6ec553ff7 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -91,6 +91,7 @@ enum mptsas_hotplug_action {
 	MPTSAS_DEL_DEVICE,
 	MPTSAS_ADD_RAID,
 	MPTSAS_DEL_RAID,
+	MPTSAS_IGNORE_EVENT,
 };
 
 struct mptsas_hotplug_event {
@@ -298,6 +299,26 @@ mptsas_find_portinfo_by_handle(MPT_ADAPTER *ioc, u16 handle)
 	return rc;
 }
 
+/*
+ * Returns true if there is a scsi end device
+ */
+static inline int
+mptsas_is_end_device(struct mptsas_devinfo * attached)
+{
+	if ((attached->handle) &&
+	    (attached->device_info &
+	    MPI_SAS_DEVICE_INFO_END_DEVICE) &&
+	    ((attached->device_info &
+	    MPI_SAS_DEVICE_INFO_SSP_TARGET) |
+	    (attached->device_info &
+	    MPI_SAS_DEVICE_INFO_STP_TARGET) |
+	    (attached->device_info &
+	    MPI_SAS_DEVICE_INFO_SATA_DEVICE)))
+		return 1;
+	else
+		return 0;
+}
+
 static int
 mptsas_sas_enclosure_pg0(MPT_ADAPTER *ioc, struct mptsas_enclosure *enclosure,
 		u32 form, u32 form_specific)
@@ -872,7 +893,11 @@ mptsas_sas_device_pg0(MPT_ADAPTER *ioc, struct mptsas_devinfo *device_info,
 	SasDevicePage0_t *buffer;
 	dma_addr_t dma_handle;
 	__le64 sas_address;
-	int error;
+	int error=0;
+
+	if (ioc->sas_discovery_runtime &&
+		mptsas_is_end_device(device_info))
+			goto out;
 
 	hdr.PageVersion = MPI_SASDEVICE0_PAGEVERSION;
 	hdr.ExtPageLength = 0;
@@ -1009,7 +1034,11 @@ mptsas_sas_expander_pg1(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info,
 	CONFIGPARMS cfg;
 	SasExpanderPage1_t *buffer;
 	dma_addr_t dma_handle;
-	int error;
+	int error=0;
+
+	if (ioc->sas_discovery_runtime &&
+		mptsas_is_end_device(&phy_info->attached))
+			goto out;
 
 	hdr.PageVersion = MPI_SASEXPANDER0_PAGEVERSION;
 	hdr.ExtPageLength = 0;
@@ -1068,26 +1097,6 @@ mptsas_sas_expander_pg1(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info,
 	return error;
 }
 
-/*
- * Returns true if there is a scsi end device
- */
-static inline int
-mptsas_is_end_device(struct mptsas_devinfo * attached)
-{
-	if ((attached->handle) &&
-	    (attached->device_info &
-	    MPI_SAS_DEVICE_INFO_END_DEVICE) &&
-	    ((attached->device_info &
-	    MPI_SAS_DEVICE_INFO_SSP_TARGET) |
-	    (attached->device_info &
-	    MPI_SAS_DEVICE_INFO_STP_TARGET) |
-	    (attached->device_info &
-	    MPI_SAS_DEVICE_INFO_SATA_DEVICE)))
-		return 1;
-	else
-		return 0;
-}
-
 static void
 mptsas_parse_device_info(struct sas_identify *identify,
 		struct mptsas_devinfo *device_info)
@@ -1737,6 +1746,9 @@ mptsas_hotplug_work(void *arg)
 		break;
 	case MPTSAS_ADD_DEVICE:
 
+		if (ev->phys_disk_num_valid)
+			mpt_findImVolumes(ioc);
+
 		/*
 		 * Refresh sas device pg0 data
 		 */
@@ -1868,6 +1880,9 @@ mptsas_hotplug_work(void *arg)
 		scsi_device_put(sdev);
 		mpt_findImVolumes(ioc);
 		break;
+	case MPTSAS_IGNORE_EVENT:
+	default:
+		break;
 	}
 
 	kfree(ev);
@@ -1940,7 +1955,8 @@ mptscsih_send_raid_event(MPT_ADAPTER *ioc,
 		EVENT_DATA_RAID *raid_event_data)
 {
 	struct mptsas_hotplug_event *ev;
-	RAID_VOL0_STATUS * volumeStatus;
+	int status = le32_to_cpu(raid_event_data->SettingsStatus);
+	int state = (status >> 8) & 0xff;
 
 	if (ioc->bus_type != SAS)
 		return;
@@ -1955,6 +1971,7 @@ mptscsih_send_raid_event(MPT_ADAPTER *ioc,
 	INIT_WORK(&ev->work, mptsas_hotplug_work, ev);
 	ev->ioc = ioc;
 	ev->id = raid_event_data->VolumeID;
+	ev->event_type = MPTSAS_IGNORE_EVENT;
 
 	switch (raid_event_data->ReasonCode) {
 	case MPI_EVENT_RAID_RC_PHYSDISK_DELETED:
@@ -1966,6 +1983,25 @@ mptscsih_send_raid_event(MPT_ADAPTER *ioc,
 		ev->phys_disk_num = raid_event_data->PhysDiskNum;
 		ev->event_type = MPTSAS_DEL_DEVICE;
 		break;
+	case MPI_EVENT_RAID_RC_PHYSDISK_STATUS_CHANGED:
+		switch (state) {
+		case MPI_PD_STATE_ONLINE:
+			ioc->raid_data.isRaid = 1;
+			ev->phys_disk_num_valid = 1;
+			ev->phys_disk_num = raid_event_data->PhysDiskNum;
+			ev->event_type = MPTSAS_ADD_DEVICE;
+			break;
+		case MPI_PD_STATE_MISSING:
+		case MPI_PD_STATE_NOT_COMPATIBLE:
+		case MPI_PD_STATE_OFFLINE_AT_HOST_REQUEST:
+		case MPI_PD_STATE_FAILED_AT_HOST_REQUEST:
+		case MPI_PD_STATE_OFFLINE_FOR_ANOTHER_REASON:
+			ev->event_type = MPTSAS_DEL_DEVICE;
+			break;
+		default:
+			break;
+		}
+		break;
 	case MPI_EVENT_RAID_RC_VOLUME_DELETED:
 		ev->event_type = MPTSAS_DEL_RAID;
 		break;
@@ -1973,11 +2009,18 @@ mptscsih_send_raid_event(MPT_ADAPTER *ioc,
 		ev->event_type = MPTSAS_ADD_RAID;
 		break;
 	case MPI_EVENT_RAID_RC_VOLUME_STATUS_CHANGED:
-		volumeStatus = (RAID_VOL0_STATUS *) &
-		    raid_event_data->SettingsStatus;
-		ev->event_type = (volumeStatus->State ==
-		    MPI_RAIDVOL0_STATUS_STATE_FAILED) ?
-		    MPTSAS_DEL_RAID : MPTSAS_ADD_RAID;
+		switch (state) {
+		case MPI_RAIDVOL0_STATUS_STATE_FAILED:
+		case MPI_RAIDVOL0_STATUS_STATE_MISSING:
+			ev->event_type = MPTSAS_DEL_RAID;
+			break;
+		case MPI_RAIDVOL0_STATUS_STATE_OPTIMAL:
+		case MPI_RAIDVOL0_STATUS_STATE_DEGRADED:
+			ev->event_type = MPTSAS_ADD_RAID;
+			break;
+		default:
+			break;
+		}
 		break;
 	default:
 		break;