(By Jakob Lesage): "Passivization is a detransitivizing operation that takes a transitive clause (The dog bites the man.) and turns it into an intransitive clause by promoting the P argument (the man) to morphosyntactic S function. In the resulting intransitive clause, the former A argument (the dog) either vanishes or adopts an oblique function: The man is bitten (by the dog). ‘Mediopassives’, ‘anticausatives’ and the sort (e.g. ‘x breaks the vase’ > ‘the vase breaks’) also count as passives. This question targets phonologically bound passive markers on lexical verbs. Anything that happens with auxiliaries is irrelevant here. ❡
Sometimes a language uses a combination of an auxiliary and a special form of the verb to express passive clauses. This verb form may be called a 'participle' or 'infinitive'. If such participial or infinitival forms are morphologically marked (that is, they are not unmarked/zero-marked), they also trigger a 1 for this feature."