SF_CDTXDOFF       811 dev/ic/aic6915.h #define	SF_CDTXDADDR(sc, x)	((sc)->sc_cddma + SF_CDTXDOFF((x)))
SF_CDTXDOFF       818 dev/ic/aic6915.h 	    SF_CDTXDOFF((x)), sizeof(struct sf_txdesc0), (ops))