ioapic_read
ver = ioapic_read(addr, IOAPIC_VER);
id = ioapic_read(info->io_addr, IOAPIC_ID);
id = ioapic_read(info->io_addr, IOAPIC_ID);
flags = ioapic_read(addr, select) & IOART_RESV;
target = ioapic_read(addr, select + 1) & IOART_HI_DEST_RESV;
u_int ioapic_read(volatile void *, int);
value = ioapic_read(ioapic_irqs[intr].io_addr, select);
value = ioapic_read(ioapic_irqs[intr].io_addr, select);
ver = ioapic_read(addr, IOAPIC_VER);