From: Murthy Bhat <Murthy.Bhat@xxxxxxxxxxxxx> - add support for a timeout on LUN resets. Reviewed-by: Scott Benesh <scott.benesh@xxxxxxxxxxxxx> Reviewed-by: Scott Teel <scott.teel@xxxxxxxxxxxxx> Reviewed-by: Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx> Signed-off-by: Murthy Bhat <Murthy.Bhat@xxxxxxxxxxxxx> Signed-off-by: Don Brace <don.brace@xxxxxxxxxxxxx> --- drivers/scsi/smartpqi/smartpqi.h | 5 ++++- drivers/scsi/smartpqi/smartpqi_init.c | 21 ++++++++++++++++++--- 2 files changed, 22 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h index af0662b8a09c..c09d48366d38 100644 --- a/drivers/scsi/smartpqi/smartpqi.h +++ b/drivers/scsi/smartpqi/smartpqi.h @@ -387,7 +387,8 @@ struct pqi_task_management_request { struct pqi_iu_header header; __le16 request_id; __le16 nexus_id; - u8 reserved[4]; + u8 reserved[2]; + __le16 timeout; u8 lun_number[8]; __le16 protocol_specific; __le16 outbound_queue_id_to_manage; @@ -764,6 +765,7 @@ struct pqi_config_table_firmware_features { #define PQI_FIRMWARE_FEATURE_SMP 1 #define PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE 11 #define PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT 13 +#define PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT 14 struct pqi_config_table_debug { struct pqi_config_table_section_header header; @@ -1142,6 +1144,7 @@ struct pqi_ctrl_info { u8 pqi_reset_quiesce_supported : 1; u8 soft_reset_handshake_supported : 1; u8 raid_iu_timeout_supported: 1; + u8 tmf_iu_timeout_supported: 1; struct list_head scsi_device_list; spinlock_t scsi_device_list_lock; diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 197d2f4ae34c..6abd51d57ad7 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -5693,7 +5693,8 @@ static void pqi_lun_reset_complete(struct pqi_io_request *io_request, complete(waiting); } -#define PQI_LUN_RESET_TIMEOUT_SECS 10 +#define PQI_LUN_RESET_TIMEOUT_SECS 60 +#define PQI_LUN_RESET_POLL_COMPLETION_SECS 10 static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device, struct completion *wait) @@ -5702,7 +5703,7 @@ static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info, while (1) { if (wait_for_completion_io_timeout(wait, - PQI_LUN_RESET_TIMEOUT_SECS * PQI_HZ)) { + PQI_LUN_RESET_POLL_COMPLETION_SECS * PQI_HZ)) { rc = 0; break; } @@ -5739,6 +5740,9 @@ static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, memcpy(request->lun_number, device->scsi3addr, sizeof(request->lun_number)); request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET; + if (ctrl_info->tmf_iu_timeout_supported) + put_unaligned_le16(PQI_LUN_RESET_TIMEOUT_SECS, + &request->timeout); pqi_start_io(ctrl_info, &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, @@ -5768,7 +5772,7 @@ static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info, for (retries = 0;;) { rc = pqi_lun_reset(ctrl_info, device); - if (rc != -EAGAIN || ++retries > PQI_LUN_RESET_RETRIES) + if (rc == 0 || ++retries > PQI_LUN_RESET_RETRIES) break; msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS); } @@ -6895,6 +6899,10 @@ static void pqi_ctrl_update_feature_flags(struct pqi_ctrl_info *ctrl_info, ctrl_info->raid_iu_timeout_supported = firmware_feature->enabled; break; + case PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT: + ctrl_info->tmf_iu_timeout_supported = + firmware_feature->enabled; + break; } pqi_firmware_feature_status(ctrl_info, firmware_feature); @@ -6930,6 +6938,11 @@ static struct pqi_firmware_feature pqi_firmware_features[] = { .feature_bit = PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT, .feature_status = pqi_ctrl_update_feature_flags, }, + { + .feature_name = "TMF IU Timeout", + .feature_bit = PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT, + .feature_status = pqi_ctrl_update_feature_flags, + }, }; static void pqi_process_firmware_features( @@ -8949,6 +8962,8 @@ static void __attribute__((unused)) verify_structures(void) request_id) != 8); BUILD_BUG_ON(offsetof(struct pqi_task_management_request, nexus_id) != 10); + BUILD_BUG_ON(offsetof(struct pqi_task_management_request, + timeout) != 14); BUILD_BUG_ON(offsetof(struct pqi_task_management_request, lun_number) != 16); BUILD_BUG_ON(offsetof(struct pqi_task_management_request,