Hi all! I'm porting device drivers from Linux to FreeBSD. I have been looking around for a way, how to register an interrupt service routine for the standard PC's serial port, i.e. 0x3f8/IRQ4, but have not found I have ported succesfully a PCI card, where I have used bus_alloc_resource_any(), bus_setup_intr(), .. but haven't found the way for a correct registration of an non-bus interrupt, as there is no probe/attach and no device_t dev structure. Is there something like Linux's request_irq() on FreeBSD? Or how is the correct way to do that? Thanks in advance!