mpt3sas: Don't send PHYDISK_HIDDEN RAID action request on SAS2 HBAs

Avoid sending PHYDISK_HIDDEN RAID action requests to SAS2 controllers
since they don't support it.

Also enable fast_path only for SAS3 HBAs.
Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/mpt3sas/mpt3sas_scsih.c

@@ -1165,8 +1165,10 @@ scsih_target_alloc(struct scsi_target *starget)
 		if (test_bit(sas_device->handle, ioc->pd_handles))
 			sas_target_priv_data->flags |=
 			    MPT_TARGET_FLAGS_RAID_COMPONENT;
+#ifndef SCSI_MPT2SAS
 		if (sas_device->fast_path)
 			sas_target_priv_data->flags |= MPT_TARGET_FASTPATH_IO;
+#endif
 	}
 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 
@@ -3719,11 +3721,13 @@ scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
 		ioc->build_zero_len_sge(ioc, &mpi_request->SGL);
 
 	if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)) {
+#ifndef SCSI_MPT2SAS
 		if (sas_target_priv_data->flags & MPT_TARGET_FASTPATH_IO) {
 			mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len |
 			    MPI25_SCSIIO_IOFLAGS_FAST_PATH);
 			mpt3sas_base_put_smid_fast_path(ioc, smid, handle);
 		} else
+#endif
 			mpt3sas_base_put_smid_scsi_io(ioc, smid, handle);
 	} else
 		mpt3sas_base_put_smid_default(ioc, smid);
@@ -5031,8 +5035,10 @@ _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phy_num,
 	sas_device->device_info = device_info;
 	sas_device->sas_address = sas_address;
 	sas_device->phy = sas_device_pg0.PhyNum;
+#ifndef SCSI_MPT2SAS
 	sas_device->fast_path = (le16_to_cpu(sas_device_pg0.Flags) &
 	    MPI25_SAS_DEVICE0_FLAGS_FAST_PATH_CAPABLE) ? 1 : 0;
+#endif
 
 	if (sas_device_pg0.Flags & MPI2_SAS_DEVICE0_FLAGS_ENCL_LEVEL_VALID) {
 		sas_device->enclosure_level =
@@ -5731,6 +5737,7 @@ _scsih_sas_discovery_event(struct MPT3SAS_ADAPTER *ioc,
 	}
 }
 
+#ifndef SCSI_MPT2SAS
 /**
  * _scsih_ir_fastpath - turn on fastpath for IR physdisk
  * @ioc: per adapter object
@@ -5750,7 +5757,6 @@ _scsih_ir_fastpath(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phys_disk_num)
 	u16 ioc_status;
 	u32 log_info;
 
-
 	mutex_lock(&ioc->scsih_cmds.mutex);
 
 	if (ioc->scsih_cmds.status != MPT3_CMD_NOT_USED) {
@@ -5825,6 +5831,8 @@ _scsih_ir_fastpath(struct MPT3SAS_ADAPTER *ioc, u16 handle, u8 phys_disk_num)
 		    FORCE_BIG_HAMMER);
 	return rc;
 }
+/* End of not defined SCSI_MPT2SAS */
+#endif
 
 /**
  * _scsih_reprobe_lun - reprobing lun
@@ -6017,8 +6025,10 @@ _scsih_sas_pd_hide(struct MPT3SAS_ADAPTER *ioc,
 	if (!sas_device)
 		return;
 
+#ifndef SCSI_MPT2SAS
 	/* hiding raid component */
 	_scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
+#endif
 	if (starget)
 		starget_for_each_device(starget, (void *)1, _scsih_reprobe_lun);
 }
@@ -6067,7 +6077,9 @@ _scsih_sas_pd_add(struct MPT3SAS_ADAPTER *ioc,
 	sas_device = _scsih_sas_device_find_by_handle(ioc, handle);
 	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
 	if (sas_device) {
+#ifndef SCSI_MPT2SAS
 		_scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
+#endif
 		return;
 	}
 
@@ -6091,7 +6103,9 @@ _scsih_sas_pd_add(struct MPT3SAS_ADAPTER *ioc,
 		mpt3sas_transport_update_links(ioc, sas_address, handle,
 		    sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
 
+#ifndef SCSI_MPT2SAS
 	_scsih_ir_fastpath(ioc, handle, element->PhysDiskNum);
+#endif
 	_scsih_add_device(ioc, handle, 0, 1);
 }
 
@@ -6202,13 +6216,14 @@ _scsih_sas_ir_config_change_event(struct MPT3SAS_ADAPTER *ioc,
 
 	element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
 	if (ioc->shost_recovery) {
-
+#ifndef SCSI_MPT2SAS
 		for (i = 0; i < event_data->NumElements; i++, element++) {
 			if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_HIDE)
 				_scsih_ir_fastpath(ioc,
 					le16_to_cpu(element->PhysDiskDevHandle),
 					element->PhysDiskNum);
 		}
+#endif
 		return;
 	}
 	for (i = 0; i < event_data->NumElements; i++, element++) {