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authorKevin Barnett <kevin.barnett@hpe.com>2017-05-03 18:52:40 -0500
committerMartin K. Petersen <martin.petersen@oracle.com>2017-06-12 20:48:02 -0400
commit5b0fba0f408777113eff93bd18ab0b9f80760fb7 (patch)
tree7d71bb70457ba6742973197646d2abfee847e18c /drivers/scsi/smartpqi
parenta81ed5f338a843d8bfd199928142b196d71ae62c (diff)
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>
Diffstat (limited to 'drivers/scsi/smartpqi')
-rw-r--r--drivers/scsi/smartpqi/smartpqi.h2
-rw-r--r--drivers/scsi/smartpqi/smartpqi_init.c1
-rw-r--r--drivers/scsi/smartpqi/smartpqi_sis.c7
-rw-r--r--drivers/scsi/smartpqi/smartpqi_sis.h1
4 files changed, 10 insertions, 1 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h
index b673825f46b5..73754caa0161 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 735cef55d3a2..14d74e157eb5 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 71408f9e8f75..c7d9ea10b02a 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 bd6e7b08338e..7f7b68ca0bd2 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);