quicc_read4
sccr = quicc_read4(sc->sc_rres, QUICC_REG_SCCR) & 3;
sipnr = quicc_read4(sc->sc_rres, QUICC_REG_SIPNR_L);
(void)quicc_read4(bas, rb + 4);
buf = (void *)(uintptr_t)quicc_read4(bas, rb + 4);
brg = quicc_read4(bas, QUICC_REG_BRG(bas->chan - 1)) & 0x1fff;
buf = (void *)(uintptr_t)quicc_read4(bas, rb + 4);
buf = (void *)(uintptr_t)quicc_read4(bas, tb + 4);