From 5d1f03e6f49ae80d417dc72d1ee16a3379e2c026 Mon Sep 17 00:00:00 2001 From: Murthy Bhat Date: Tue, 28 Sep 2021 18:54:34 -0500 Subject: scsi: smartpqi: Capture controller reason codes In some rare cases, the driver can halt the controller. Add a reason code describing why the controller was halted. Store this reason code in a controller register to aid in debugging the issue. Link: https://lore.kernel.org/r/20210928235442.201875-4-don.brace@microchip.com Reviewed-by: Scott Benesh Reviewed-by: Scott Teel Reviewed-by: Mike McGowen Acked-by: John Donnelly Signed-off-by: Murthy Bhat Signed-off-by: Don Brace Signed-off-by: Martin K. Petersen --- drivers/scsi/smartpqi/smartpqi_sis.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'drivers/scsi/smartpqi/smartpqi_sis.c') diff --git a/drivers/scsi/smartpqi/smartpqi_sis.c b/drivers/scsi/smartpqi/smartpqi_sis.c index 8acd3a80f582..d66eb8ea161c 100644 --- a/drivers/scsi/smartpqi/smartpqi_sis.c +++ b/drivers/scsi/smartpqi/smartpqi_sis.c @@ -397,14 +397,17 @@ void sis_enable_intx(struct pqi_ctrl_info *ctrl_info) sis_set_doorbell_bit(ctrl_info, SIS_ENABLE_INTX); } -void sis_shutdown_ctrl(struct pqi_ctrl_info *ctrl_info) +void sis_shutdown_ctrl(struct pqi_ctrl_info *ctrl_info, + enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason) { if (readl(&ctrl_info->registers->sis_firmware_status) & SIS_CTRL_KERNEL_PANIC) return; - writel(SIS_TRIGGER_SHUTDOWN, - &ctrl_info->registers->sis_host_to_ctrl_doorbell); + if (ctrl_info->firmware_triage_supported) + writel(ctrl_shutdown_reason, &ctrl_info->registers->sis_ctrl_shutdown_reason_code); + + writel(SIS_TRIGGER_SHUTDOWN, &ctrl_info->registers->sis_host_to_ctrl_doorbell); } int sis_pqi_reset_quiesce(struct pqi_ctrl_info *ctrl_info) -- cgit