From 51106ab5306b752cd53d40626f78774276bb1368 Mon Sep 17 00:00:00 2001
From: "Kashyap, Desai" <kashyap.desai@lsi.com>
Date: Thu, 17 Jun 2010 14:40:10 +0530
Subject: [PATCH] [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>
---
drivers/message/fusion/mptsas.c | 37 +++++++++++++++++++++++++++++++++
drivers/message/fusion/mptsas.h | 1 +
2 files changed, 38 insertions(+)
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 1caf03ea8557..8963f5c44c23 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 7b249edbda78..57e86ab77661 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 */
};
/*