From: Kevin Barnett <kevin.barnett@hpe.com>
Date: Wed, 3 May 2017 18:52:40 -0500
Subject: scsi: smartpqi: add in controller checkpoint for controller lockups.
Patch-mainline: v4.13-rc1
Git-commit: 5b0fba0f408777113eff93bd18ab0b9f80760fb7
References: bsc#1038125
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>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
---
drivers/scsi/smartpqi/smartpqi.h | 2 +-
drivers/scsi/smartpqi/smartpqi_init.c | 1 +
drivers/scsi/smartpqi/smartpqi_sis.c | 7 +++++++
drivers/scsi/smartpqi/smartpqi_sis.h | 1 +
4 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h
index b673825..73754ca 100644
--- a/drivers/scsi/smartpqi/smartpqi.h
+++ b/drivers/scsi/smartpqi/smartpqi.h
@@ -933,10 +933,10 @@ struct pqi_ctrl_info {
struct Scsi_Host *scsi_host;
struct mutex scan_mutex;
+ bool controller_online : 1;
u8 inbound_spanning_supported : 1;
u8 outbound_spanning_supported : 1;
u8 pqi_mode_enabled : 1;
- u8 controller_online : 1;
u8 heartbeat_timer_started : 1;
struct list_head scsi_device_list;
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index 735cef5..14d74e1 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -2697,6 +2697,7 @@ static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
ctrl_info->controller_online = false;
dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
+ sis_shutdown_ctrl(ctrl_info);
for (i = 0; i < ctrl_info->num_queue_groups; i++) {
queue_group = &ctrl_info->queue_groups[i];
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)
diff --git a/drivers/scsi/smartpqi/smartpqi_sis.h b/drivers/scsi/smartpqi/smartpqi_sis.h
index bd6e7b0..7f7b68c 100644
--- a/drivers/scsi/smartpqi/smartpqi_sis.h
+++ b/drivers/scsi/smartpqi/smartpqi_sis.h
@@ -27,6 +27,7 @@ int sis_init_base_struct_addr(struct pqi_ctrl_info *ctrl_info);
void sis_enable_msix(struct pqi_ctrl_info *ctrl_info);
void sis_disable_msix(struct pqi_ctrl_info *ctrl_info);
void sis_soft_reset(struct pqi_ctrl_info *ctrl_info);
+void sis_shutdown_ctrl(struct pqi_ctrl_info *ctrl_info);
int sis_reenable_sis_mode(struct pqi_ctrl_info *ctrl_info);
void sis_write_driver_scratch(struct pqi_ctrl_info *ctrl_info, u32 value);
u32 sis_read_driver_scratch(struct pqi_ctrl_info *ctrl_info);
--
1.8.5.6