diff options
| author | Quinn Tran <quinn.tran@cavium.com> | 2017-06-02 09:12:05 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-06-12 20:48:08 -0400 |
| commit | 2da52737521a2a65eb9b2323a0748047a454e86c (patch) | |
| tree | 9f95082cc4c9c336b2dd641f27216bf10acac1c2 /drivers/scsi/qla2xxx/qla_init.c | |
| parent | 3a33dc95b00be33f150bc357ab67331cdba7fc88 (diff) | |
scsi: qla2xxx: Accelerate SCSI BUSY status generation in target mode
Accelerate generation of SCSI busy to let initiators slow down when
target is running low in resources.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_init.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_init.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 08000aebe8d4..436968ad4484 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -7374,10 +7374,19 @@ qla81xx_update_fw_options(scsi_qla_host_t *vha) } if (qla_tgt_mode_enabled(vha) || - qla_dual_mode_enabled(vha)) + qla_dual_mode_enabled(vha)) { + /* FW auto send SCSI status during */ + ha->fw_options[1] |= BIT_8; + ha->fw_options[10] |= (u16)SAM_STAT_BUSY << 8; + + /* FW perform Exchange validation */ ha->fw_options[2] |= BIT_4; - else + } else { + ha->fw_options[1] &= ~BIT_8; + ha->fw_options[10] &= 0x00ff; + ha->fw_options[2] &= ~BIT_4; + } if (ql2xetsenable) { /* Enable ETS Burst. */ |