[PATCH 17/37] scsi: mpt3sas: use 16-bits defined sense codes

[Damien Le Moal <dlemoal@kernel.org>]

Refactor the mpt3sas driver to replace all hard-coded additional sense
codes and additional sense code qualifiers with the enum values defined in
include/scsi/scsi_sense.h. This helps with code clarity as the sense codes
being processed are easier to test and self-documented.

No functional change intended.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
 drivers/scsi/mpt3sas/mpt3sas_scsih.c | 69 +++++++++++++++-------------
 1 file changed, 36 insertions(+), 33 deletions(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 0e12009a87f6..085d4672db85 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -5401,23 +5401,23 @@ _scsih_setup_eedp(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
 static void
 _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
 {
-	u8 ascq;
+	u16 sense_code;
 
 	switch (ioc_status) {
 	case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
-		ascq = 0x01;
+		sense_code = LOGICAL_BLOCK_GUARD_CHECK_FAILED;
 		break;
 	case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
-		ascq = 0x02;
+		sense_code = LOGICAL_BLOCK_APPLICATION_TAG_CHECK_FAILED;
 		break;
 	case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
-		ascq = 0x03;
+		sense_code = LOGICAL_BLOCK_REFERENCE_TAG_CHECK_FAILED;
 		break;
 	default:
-		ascq = 0x00;
+		sense_code = ID_CRC_OR_ECC_ERROR;
 		break;
 	}
-	scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x10, ascq);
+	scsi_set_sense(scmd, 0, ILLEGAL_REQUEST, sense_code);
 	set_host_byte(scmd, DID_ABORT);
 }
 
@@ -5474,7 +5474,8 @@ static enum scsi_qc_status scsih_qcmd(struct Scsi_Host *shost,
 	if (handle == MPT3SAS_INVALID_DEVICE_HANDLE || sas_device_priv_data->block) {
 		if (scsi_get_host_state(scmd->device->host) == SHOST_RECOVERY &&
 		    scmd->cmnd[0] == TEST_UNIT_READY) {
-			scsi_build_sense(scmd, 0, UNIT_ATTENTION, 0x29, 0x07);
+			scsi_set_sense(scmd, 0, UNIT_ATTENTION,
+				       I_T_NEXUS_LOSS_OCCURRED);
 			scsi_done(scmd);
 			return 0;
 		}
@@ -5986,7 +5987,7 @@ _scsih_smart_predicted_fault(struct MPT3SAS_ADAPTER *ioc, u16 handle)
 	event_data = (Mpi2EventDataSasDeviceStatusChange_t *)
 	    event_reply->EventData;
 	event_data->ReasonCode = MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA;
-	event_data->ASC = 0x5D;
+	event_data->ASC = ASC_FAILURE_PREDICTION_THRESHOLD_EXCEEDED;
 	event_data->DevHandle = cpu_to_le16(handle);
 	event_data->SASAddress = cpu_to_le64(sas_target_priv_data->sas_address);
 	mpt3sas_ctl_add_to_event_log(ioc, event_reply);
@@ -6109,8 +6110,7 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
 		    le32_to_cpu(mpi_reply->SenseCount));
 		memcpy(scmd->sense_buffer, sense_data, sz);
 		_scsih_normalize_sense(scmd->sense_buffer, &data);
-		/* failure prediction threshold exceeded */
-		if (data.asc == 0x5D)
+		if (data.asc == ASC_FAILURE_PREDICTION_THRESHOLD_EXCEEDED)
 			_scsih_smart_predicted_fault(ioc,
 			    le16_to_cpu(mpi_reply->DevHandle));
 		mpt3sas_trigger_scsi(ioc, data.skey, data.asc, data.ascq);
@@ -6199,8 +6199,8 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
 		else if (!xfer_cnt && scmd->cmnd[0] == REPORT_LUNS) {
 			mpi_reply->SCSIState = MPI2_SCSI_STATE_AUTOSENSE_VALID;
 			mpi_reply->SCSIStatus = SAM_STAT_CHECK_CONDITION;
-			scsi_build_sense(scmd, 0, ILLEGAL_REQUEST,
-					 0x20, 0);
+			scsi_set_sense(scmd, 0, ILLEGAL_REQUEST,
+				       INVALID_COMMAND_OP_CODE);
 		}
 		break;
 
@@ -7691,38 +7691,41 @@ _scsih_determine_disposition(struct MPT3SAS_ADAPTER *ioc,
 
 	if (check_sense) {
 		_scsih_normalize_sense(transfer_packet->sense, &sense_info);
-		if (sense_info.skey == UNIT_ATTENTION)
+		if (sense_info.skey == UNIT_ATTENTION) {
 			rc = DEVICE_RETRY_UA;
-		else if (sense_info.skey == NOT_READY) {
-			/* medium isn't present */
-			if (sense_info.asc == 0x3a)
+		} else if (sense_info.skey == NOT_READY) {
+			if (sense_info.asc == ASC_MEDIUM_NOT_PRESENT) {
 				rc = DEVICE_READY;
-			/* LOGICAL UNIT NOT READY */
-			else if (sense_info.asc == 0x04) {
-				if (sense_info.ascq == 0x03 ||
-				   sense_info.ascq == 0x0b ||
-				   sense_info.ascq == 0x0c) {
+			} else if (sense_info.asc == ASC_LU_NOT_READY) {
+				u16 scode = scsi_sense_code(sense_info.asc,
+							    sense_info.ascq);
+
+				if (scode ==
+				    LU_NOT_READY_MANUAL_INTERVENTION_REQUIRED ||
+				    scode ==
+				    LU_NOT_ACCESSIBLE_TARGET_PORT_IN_STANDBY_STATE ||
+				    scode ==
+				    LU_NOT_ACCESSIBLE_TARGET_PORT_IN_UNAVAILABLE_STATE)
 					rc = DEVICE_ERROR;
-				} else
+				else
 					rc = DEVICE_START_UNIT;
-			}
-			/* LOGICAL UNIT HAS NOT SELF-CONFIGURED YET */
-			else if (sense_info.asc == 0x3e && !sense_info.ascq)
+			} else if (sense_info.asc ==
+				   ASC_LU_HAS_NOT_SELF_CONFIGURED_YET &&
+				   !sense_info.ascq) {
 				rc = DEVICE_START_UNIT;
+			}
 		} else if (sense_info.skey == ILLEGAL_REQUEST &&
-		    transfer_packet->cdb[0] == REPORT_LUNS) {
+			   transfer_packet->cdb[0] == REPORT_LUNS) {
 			rc = DEVICE_READY;
 		} else if (sense_info.skey == MEDIUM_ERROR) {
-
-			/* medium is corrupt, lets add the device so
-			 * users can collect some info as needed
+			/*
+			 * medium is corrupt, lets add the device so users can
+			 * collect some info as needed
 			 */
-
-			if (sense_info.asc == 0x31)
+			if (sense_info.asc == ASC_MEDIUM_FORMAT_CORRUPTED)
 				rc = DEVICE_READY;
 		} else if (sense_info.skey == HARDWARE_ERROR) {
-			/* Defect List Error, still add the device */
-			if (sense_info.asc == 0x19)
+			if (sense_info.asc == ASC_DEFECT_LIST_ERROR)
 				rc = DEVICE_READY;
 		}
 	}
-- 
2.55.0