From: Kevin Barnett Date: Wed, 3 May 2017 23:52:40 +0000 (-0500) Subject: scsi: smartpqi: add in controller checkpoint for controller lockups. X-Git-Tag: v4.14-rc1~575^2~241 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5b0fba0f408777113eff93bd18ab0b9f80760fb7;p=platform%2Fkernel%2Flinux-rpi.git scsi: smartpqi: add in controller checkpoint for controller lockups. tell smartpqi controller to generate a checkpoint for rare lockup conditions. Reviewed-by: Scott Benesh Reviewed-by: Scott Teel Signed-off-by: Kevin Barnett Signed-off-by: Don Brace Signed-off-by: Martin K. Petersen --- 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);