519 void apic_ioapic_enable(ul irq_num)  in apic_ioapic_enable()  argument
521     ul index = 0x10 + ((irq_num - 32) << 1);  in apic_ioapic_enable()
527 void apic_ioapic_disable(ul irq_num)  in apic_ioapic_disable()  argument
529     ul index = 0x10 + ((irq_num - 32) << 1);  in apic_ioapic_disable()
535 ul apic_ioapic_install(ul irq_num, void *arg)  in apic_ioapic_install()  argument
539     apic_ioapic_write_rte(0x10 + ((irq_num - 32) << 1), *(ul *)entry);  in apic_ioapic_install()
543 void apic_ioapic_uninstall(ul irq_num)  in apic_ioapic_uninstall()  argument
546     apic_ioapic_write_rte(0x10 + ((irq_num - 32) << 1), 0x10000UL);  in apic_ioapic_uninstall()
549 void apic_ioapic_level_ack(ul irq_num) // 电平触发  in apic_ioapic_level_ack()  argument
552     *apic_ioapic_map.virtual_EOI_addr = irq_num;  in apic_ioapic_level_ack()
555 void apic_ioapic_edge_ack(ul irq_num) // 边沿触发  in apic_ioapic_edge_ack()  argument
573 void apic_local_apic_edge_ack(ul irq_num)  in apic_local_apic_edge_ack()  argument