scsi: smartpqi: add in controller checkpoint for controller lockups.
tell smartpqi controller to generate a checkpoint for rare lockup
conditions.
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/smartpqi/smartpqi_sis.c b/drivers/scsi/smartpqi/smartpqi_sis.c
index 71408f9..c7d9ea1 100644
--- a/drivers/scsi/smartpqi/smartpqi_sis.c
+++ b/drivers/scsi/smartpqi/smartpqi_sis.c
@@ -34,6 +34,7 @@
#define SIS_REENABLE_SIS_MODE 0x1
#define SIS_ENABLE_MSIX 0x40
#define SIS_SOFT_RESET 0x100
+#define SIS_TRIGGER_SHUTDOWN 0x800000
#define SIS_CMD_READY 0x200
#define SIS_CMD_COMPLETE 0x1000
#define SIS_CLEAR_CTRL_TO_HOST_DOORBELL 0x1000
@@ -342,6 +343,12 @@ void sis_soft_reset(struct pqi_ctrl_info *ctrl_info)
&ctrl_info->registers->sis_host_to_ctrl_doorbell);
}
+void sis_shutdown_ctrl(struct pqi_ctrl_info *ctrl_info)
+{
+ writel(SIS_TRIGGER_SHUTDOWN,
+ &ctrl_info->registers->sis_host_to_ctrl_doorbell);
+}
+
#define SIS_MODE_READY_TIMEOUT_SECS 30
int sis_reenable_sis_mode(struct pqi_ctrl_info *ctrl_info)