cam/scsi: Restore scsi_start_stop() and add scsi_start_stop_pc()

Revert the argument change that broke libcam in 8c35de49 and move
power_condition support to scsi_start_stop_pc().

Reported by:		imp
Reviewed By:		#cam, imp (mentor)
Sponsored by:           Samsung Electronics
Differential Revision:	https://reviews.freebsd.org/D54822

sbin/camcontrol/camcontrol.c

@@ -1024,7 +1024,6 @@ scsistart(struct cam_device *device, int startstop, int loadeject,
 			/* start/stop */ startstop,
 			/* load_eject */ loadeject,
 			/* immediate */ 0,
-			/* power_condition */ SSS_PC_START_VALID,
 			/* sense_len */ SSD_FULL_SIZE,
 			/* timeout */ timeout ? timeout : 120000);
 

sys/cam/cam_periph.c

@@ -1791,7 +1791,6 @@ camperiphscsisenseerror(union ccb *ccb, union ccb **orig,
 					/*start*/TRUE,
 					/*load/eject*/le,
 					/*immediate*/FALSE,
-					/*power_condition*/SSS_PC_START_VALID,
 					SSD_FULL_SIZE,
 					/*timeout*/50000);
 			break;

sys/cam/scsi/scsi_all.c

@@ -9007,6 +9007,40 @@ scsi_write_buffer(struct ccb_scsiio *csio, uint32_t retries,
 
 void
 scsi_start_stop(struct ccb_scsiio *csio, uint32_t retries,
+		void (*cbfcnp)(struct cam_periph *, union ccb *),
+		uint8_t tag_action, int start, int load_eject,
+		int immediate, uint8_t sense_len, uint32_t timeout)
+{
+	struct scsi_start_stop_unit *scsi_cmd;
+	int extra_flags = 0;
+
+	scsi_cmd = (struct scsi_start_stop_unit *)&csio->cdb_io.cdb_bytes;
+	bzero(scsi_cmd, sizeof(*scsi_cmd));
+	scsi_cmd->opcode = START_STOP_UNIT;
+	if (start != 0) {
+		scsi_cmd->how |= SSS_START;
+		/* it takes a lot of power to start a drive */
+		extra_flags |= CAM_HIGH_POWER;
+	}
+	if (load_eject != 0)
+		scsi_cmd->how |= SSS_LOEJ;
+	if (immediate != 0)
+		scsi_cmd->byte2 |= SSS_IMMED;
+
+	cam_fill_csio(csio,
+		      retries,
+		      cbfcnp,
+		      /*flags*/CAM_DIR_NONE | extra_flags,
+		      tag_action,
+		      /*data_ptr*/NULL,
+		      /*dxfer_len*/0,
+		      sense_len,
+		      sizeof(*scsi_cmd),
+		      timeout);
+}
+
+void
+scsi_start_stop_pc(struct ccb_scsiio *csio, uint32_t retries,
 		void (*cbfcnp)(struct cam_periph *, union ccb *),
 		uint8_t tag_action, int start, int load_eject,
 		int immediate, uint8_t power_condition, uint8_t sense_len,

sys/cam/scsi/scsi_all.h

@@ -4348,6 +4348,10 @@ void scsi_unmap(struct ccb_scsiio *csio, uint32_t retries,
 		uint8_t sense_len, uint32_t timeout);
 
 void scsi_start_stop(struct ccb_scsiio *csio, uint32_t retries,
+		     void (*cbfcnp)(struct cam_periph *, union ccb *),
+		     uint8_t tag_action, int start, int load_eject,
+		     int immediate, uint8_t sense_len, uint32_t timeout);
+void scsi_start_stop_pc(struct ccb_scsiio *csio, uint32_t retries,
 		     void (*cbfcnp)(struct cam_periph *, union ccb *),
 		     uint8_t tag_action, int start, int load_eject,
 		     int immediate, uint8_t power_condition, uint8_t sense_len,

sys/cam/scsi/scsi_cd.c

@@ -3406,7 +3406,6 @@ cdstartunit(struct cam_periph *periph, int load)
 			/* start */ TRUE,
 			/* load_eject */ load,
 			/* immediate */ FALSE,
-			/* power_condition */ SSS_PC_START_VALID,
 			/* sense_len */ SSD_FULL_SIZE,
 			/* timeout */ 50000);
 
@@ -3435,7 +3434,6 @@ cdstopunit(struct cam_periph *periph, uint32_t eject)
 			/* start */ FALSE,
 			/* load_eject */ eject,
 			/* immediate */ FALSE,
-			/* power_condition */ SSS_PC_START_VALID,
 			/* sense_len */ SSD_FULL_SIZE,
 			/* timeout */ 50000);
 

sys/dev/mpr/mpr_sas_lsi.c

@@ -1516,7 +1516,6 @@ mprsas_SSU_to_SATA_devices(struct mpr_softc *sc, int howto)
 			    /*start*/FALSE,
 			    /*load/eject*/0,
 			    /*immediate*/FALSE,
-			    /*power_condition*/SSS_PC_START_VALID,
 			    MPR_SENSE_LEN,
 			    /*timeout*/10000);
 			xpt_action(ccb);

sys/dev/mps/mps_sas_lsi.c

@@ -1152,7 +1152,6 @@ mpssas_SSU_to_SATA_devices(struct mps_softc *sc, int howto)
 			    /*start*/FALSE,
 			    /*load/eject*/0,
 			    /*immediate*/FALSE,
-			    /*power_condition*/SSS_PC_START_VALID,
 			    MPS_SENSE_LEN,
 			    /*timeout*/10000);
 			xpt_action(ccb);

sys/dev/ufshci/ufshci_sim.c

@@ -494,7 +494,7 @@ ufshci_sim_send_ssu(struct ufshci_controller *ctrlr, bool start,
 		return ENOMEM;
 	}
 
-	scsi_start_stop(&ccb->csio,
+	scsi_start_stop_pc(&ccb->csio,
 	    /*retries*/ 4,
 	    /*cbfcnp*/ NULL,
 	    /*tag_action*/ MSG_SIMPLE_Q_TAG,