atap_cmd2_en      200 dev/ata/atareg.h     u_int16_t	atap_cmd2_en;		/* 86: cmd/features enabled */
atap_cmd2_en      280 dev/ata/wd.c   	if ((wd->sc_params.atap_cmd2_en & ATAPI_CMD2_48AD) != 0)