SRDS_MEDIA
softc->density_type_bits[1] = SRDS_MEDIA;
softc->density_type_bits[3] = SRDS_MEDIUM_TYPE | SRDS_MEDIA;
/*media*/ softc->density_type_bits[i] & SRDS_MEDIA,
if (softc->density_type_bits[i] & SRDS_MEDIA)
scsi_cmd->byte1 |= SRDS_MEDIA;
if (softc->density_type_bits[i] & SRDS_MEDIA)