ahc_index_busy_tcl
*ptr = ahc_index_busy_tcl(ahc, tcl);
scbid = ahc_index_busy_tcl(ahc, tcl);
ahc_index_busy_tcl(ahc,
ahc_index_busy_tcl(ahc,
u_int ahc_index_busy_tcl(struct ahc_softc *, u_int);