NVME_CQHDBL
q->q_cqhdbl = NVME_CQHDBL(id, dstrd);
nvme_write4(my->sc, NVME_CQHDBL(NVME_HIB_Q, my->sc->sc_dstrd),
nvme_barrier(my->sc, NVME_CQHDBL(NVME_HIB_Q, my->sc->sc_dstrd), 4,