vrbcu_read
spdreg = vrbcu_read(sc, BCUCLKSPEED_REG_W);
spdreg = vrbcu_read(sc, BCU81CLKSPEED_REG_W);
reg = vrbcu_read(sc, BCUCNT1_REG_W);
reg = vrbcu_read(sc, BCUCNT2_REG_W);
reg = vrbcu_read(sc, BCUSPEED_REG_W);
reg = vrbcu_read(sc, BCUERRST_REG_W);
reg = vrbcu_read(sc, BCURFCNT_REG_W);
reg = vrbcu_read(sc, BCUREFCOUNT_REG_W);
reg = vrbcu_read(sc, BCUCNT3_REG_W);
static unsigned short vrbcu_read(struct vrbcu_softc *, int);