MPI2_SCSIIO_CONTROL_READ
io_request->Control = MPI2_SCSIIO_CONTROL_READ;
mpi_control = MPI2_SCSIIO_CONTROL_READ;
mpi_control = MPI2_SCSIIO_CONTROL_READ;
cmd->io_request->Control |= htole32(MPI2_SCSIIO_CONTROL_READ);