mpi3mr_regwrite64
mpi3mr_regwrite64(sc, MPI3_SYSIF_ADMIN_REQ_Q_ADDR_LOW_OFFSET, sc->admin_req_phys);
mpi3mr_regwrite64(sc, MPI3_SYSIF_ADMIN_REPLY_Q_ADDR_LOW_OFFSET, sc->admin_reply_phys);