[SCSI] fusion - adding raid support in mptsas

The SAS RAID volumes are reported beyond the expected number of phys.

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

2 files changed, 27 insertions, 1 deletions

diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index 25f44064b96c..47053ac65068 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -630,6 +630,7 @@ typedef struct _MPT_ADAPTER
         struct list_head         sas_topology;
         struct mutex             sas_topology_mutex;
         MPT_SAS_MGMT             sas_mgmt;
+        int                      num_ports;
 
         struct list_head         fc_rports;
         spinlock_t               fc_rport_lock; /* list and ri flags */
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 668a101b89f0..5a06d8d8694e 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -274,6 +274,16 @@ mptsas_slave_alloc(struct scsi_device *sdev)
                 hd->Targets[sdev->id] = vtarget;
         }
 
+        /*
+          RAID volumes placed beyond the last expected port.
+        */
+        if (sdev->channel == hd->ioc->num_ports) {
+                vdev->target_id = sdev->id;
+                vdev->bus_id = 0;
+                vdev->lun = 0;
+                goto out;
+        }
+
         rphy = dev_to_rphy(sdev->sdev_target->dev.parent);
         mutex_lock(&hd->ioc->sas_topology_mutex);
         list_for_each_entry(p, &hd->ioc->sas_topology, list) {
@@ -284,6 +294,7 @@ mptsas_slave_alloc(struct scsi_device *sdev)
                                         p->phy_info[i].attached.id;
                                 vdev->bus_id = p->phy_info[i].attached.channel;
                                 vdev->lun = sdev->lun;
+        mutex_unlock(&hd->ioc->sas_topology_mutex);
                                 goto out;
                         }
                 }
@@ -295,7 +306,6 @@ mptsas_slave_alloc(struct scsi_device *sdev)
         return -ENODEV;
 
  out:
-        mutex_unlock(&hd->ioc->sas_topology_mutex);
         vtarget->ioc_id = vdev->ioc_id;
         vtarget->target_id = vdev->target_id;
         vtarget->bus_id = vdev->bus_id;
@@ -1051,6 +1061,7 @@ mptsas_probe_hba_phys(MPT_ADAPTER *ioc, int *index)
         if (error)
                 goto out_free_port_info;
 
+        ioc->num_ports = port_info->num_phys;
         mutex_lock(&ioc->sas_topology_mutex);
         list_add_tail(&port_info->list, &ioc->sas_topology);
         mutex_unlock(&ioc->sas_topology_mutex);
@@ -1585,6 +1596,20 @@ mptsas_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
         mptsas_scan_sas_topology(ioc);
 
+        /*
+          Reporting RAID volumes.
+        */
+        if (!ioc->raid_data.pIocPg2)
+                return 0;
+        if (!ioc->raid_data.pIocPg2->NumActiveVolumes)
+                return 0;
+        for (ii=0;ii<ioc->raid_data.pIocPg2->NumActiveVolumes;ii++) {
+                scsi_add_device(sh,
+                        ioc->num_ports,
+                        ioc->raid_data.pIocPg2->RaidVolume[ii].VolumeID,
+                        0);
+        }
+
         return 0;
 
 out_mptsas_probe: