IRQ_BANK1
sc->sc_imask[1][ipl] |= (1 << IRQ_BANK1(irq));
sc->sc_imask[1][ipl] &= ~(1 << IRQ_BANK1(irq));
if (pending & (1 << IRQ_BANK1(irq)))
sc->sc_bcm_intc_imask[1][ipl] |= (1 << IRQ_BANK1(irq));
sc->sc_bcm_intc_imask[1][ipl] &= ~(1 << IRQ_BANK1(irq));
if (pending & (1 << IRQ_BANK1(irq)))