psc_irq
irq_set_chained_handler_and_data(IRQ_AUTO_3, psc_irq, (void *)0x30);
irq_set_chained_handler_and_data(IRQ_AUTO_4, psc_irq, (void *)0x40);
irq_set_chained_handler_and_data(IRQ_AUTO_5, psc_irq, (void *)0x50);
irq_set_chained_handler_and_data(IRQ_AUTO_6, psc_irq, (void *)0x60);