mpt3sas: Complete the SCSI command with DID_RESET status for log_info value 0x0x32010081

For any SCSI command, if the driver receives
IOC status = SCSI_IOC_TERMINATED and log info = 0x32010081 then
that command will be completed with DID_RESET host status.

The definition of this log info value is
"Virtual IO has failed and has to be retried".

Firmware will provide this log info value with IOC Status
"SCSI_IOC_TERMINATED", whenever a drive (with is a part of a volume)
is pulled and pushed back within some minimal delay.
With this log info value, firmware informs the driver to retry the
failed IO command infinite times, so to provide some time for the
firmware to discover the reinserted drive successfully instated of
just retrying failed command for five times(doesn't giving enough
time for firmware to complete the drive discovery) and failing the
IO permanently even though drive came back successfully.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h
index 4196fbbfa3d2f07e7a2f014740d3776d83d1291c..3b0363912587e6e0f06248597f41cff86ad59858 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_base.h
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
@@ -202,6 +202,8 @@
 #define MFG10_GF0_SSD_DATA_SCRUB_DISABLE       (0x00000008)
 #define MFG10_GF0_SINGLE_DRIVE_R0              (0x00000010)
 
+#define VIRTUAL_IO_FAILED_RETRY                        (0x32010081)
+
 /* OEM Specific Flags will come from OEM specific header files */
 struct Mpi2ManufacturingPage10_t {
        MPI2_CONFIG_PAGE_HEADER Header;         /* 00h */

diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index ec3b3d3bde38e5cfca8bdb78e9f4b4f56c0b7ca5..9dbc71ffb9363ea21a0e0330c62551f11ff4349f 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -4243,6 +4243,9 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
                                scmd->device->expecting_cc_ua = 1;
                        }
                        break;
+               } else if (log_info == VIRTUAL_IO_FAILED_RETRY) {
+                       scmd->result = DID_RESET << 16;
+                       break;
                }
                scmd->result = DID_SOFT_ERROR << 16;
                break;