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authorKashyap, Desai <kashyap.desai@lsi.com>2010-06-17 14:40:10 +0530
committerJames Bottomley <James.Bottomley@suse.de>2010-07-27 12:02:32 -0500
commit51106ab5306b752cd53d40626f78774276bb1368 (patch)
tree0e8a12734f5c75b1478fd7bbc49193dec36a1517 /drivers/message
parentaca794ddd688f1bbb7551f569b0620255c052d80 (diff)
downloadlinux-2.6.38-lt-ux500-51106ab5306b752cd53d40626f78774276bb1368.tar.gz
[SCSI] mptfusion: Added sanity to check B_T mapping for device before adding to OS
Added sanity check before treating any device is a valid device. It is possible that firmware can have device page0 in its table, but that devicemay not be available in topology. Device will be available in topology only if there is Bus Target mapping is done in firmware. Driver will always check B_T mapping of firmware before reporting device to upper layer. Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/message')
-rw-r--r--drivers/message/fusion/mptsas.c37
-rw-r--r--drivers/message/fusion/mptsas.h1
2 files changed, 38 insertions, 0 deletions
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 1caf03ea855..8963f5c44c2 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -2549,6 +2549,7 @@ mptsas_sas_device_pg0(MPT_ADAPTER *ioc, struct mptsas_devinfo *device_info,
device_info->sas_address = le64_to_cpu(sas_address);
device_info->device_info =
le32_to_cpu(buffer->DeviceInfo);
+ device_info->flags = le16_to_cpu(buffer->Flags);
out_free_consistent:
pci_free_consistent(ioc->pcidev, hdr.ExtPageLength * 4,
@@ -3840,6 +3841,13 @@ mptsas_probe_devices(MPT_ADAPTER *ioc)
MPI_SAS_DEVICE_INFO_SATA_DEVICE)) == 0)
continue;
+ /* If there is no FW B_T mapping for this device then continue
+ * */
+ if (!(sas_device.flags & MPI_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)
+ || !(sas_device.flags &
+ MPI_SAS_DEVICE0_FLAGS_DEVICE_MAPPED))
+ continue;
+
phy_info = mptsas_refreshing_device_handles(ioc, &sas_device);
if (!phy_info)
continue;
@@ -4149,6 +4157,14 @@ mptsas_adding_inactive_raid_components(MPT_ADAPTER *ioc, u8 channel, u8 id)
phys_disk.PhysDiskID))
continue;
+ /* If there is no FW B_T mapping for this device then continue
+ * */
+ if (!(sas_device.flags & MPI_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)
+ || !(sas_device.flags &
+ MPI_SAS_DEVICE0_FLAGS_DEVICE_MAPPED))
+ continue;
+
+
phy_info = mptsas_find_phyinfo_by_sas_address(ioc,
sas_device.sas_address);
mptsas_add_end_device(ioc, phy_info);
@@ -4199,6 +4215,13 @@ mptsas_hotplug_work(MPT_ADAPTER *ioc, struct fw_event_work *fw_event,
(hot_plug_info->channel << 8) +
hot_plug_info->id);
+ /* If there is no FW B_T mapping for this device then break
+ * */
+ if (!(sas_device.flags & MPI_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)
+ || !(sas_device.flags &
+ MPI_SAS_DEVICE0_FLAGS_DEVICE_MAPPED))
+ break;
+
if (!sas_device.handle)
return;
@@ -4241,6 +4264,13 @@ mptsas_hotplug_work(MPT_ADAPTER *ioc, struct fw_event_work *fw_event,
break;
}
+ /* If there is no FW B_T mapping for this device then break
+ * */
+ if (!(sas_device.flags & MPI_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)
+ || !(sas_device.flags &
+ MPI_SAS_DEVICE0_FLAGS_DEVICE_MAPPED))
+ break;
+
phy_info = mptsas_find_phyinfo_by_sas_address(
ioc, sas_device.sas_address);
@@ -4294,6 +4324,13 @@ mptsas_hotplug_work(MPT_ADAPTER *ioc, struct fw_event_work *fw_event,
break;
}
+ /* If there is no FW B_T mapping for this device then break
+ * */
+ if (!(sas_device.flags & MPI_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)
+ || !(sas_device.flags &
+ MPI_SAS_DEVICE0_FLAGS_DEVICE_MAPPED))
+ break;
+
phy_info = mptsas_find_phyinfo_by_sas_address(ioc,
sas_device.sas_address);
if (!phy_info) {
diff --git a/drivers/message/fusion/mptsas.h b/drivers/message/fusion/mptsas.h
index 7b249edbda7..57e86ab7766 100644
--- a/drivers/message/fusion/mptsas.h
+++ b/drivers/message/fusion/mptsas.h
@@ -140,6 +140,7 @@ struct mptsas_devinfo {
u64 sas_address; /* WWN of this device,
SATA is assigned by HBA,expander */
u32 device_info; /* bitfield detailed info about this device */
+ u16 flags; /* sas device pg0 flags */
};
/*