scsi_hba_probe() is a function providing the semantics of scsi_probe(9F).
An HBA driver may call scsi_hba_probe() from its tran_tgt_probe(9E) entry point, to probe for the existence of a target on the SCSI bus, or the HBA may set tran_tgt_probe(9E) to point to scsi_hba_probe directly.