static void
pci_uart_intr_assert(void *arg)
{
struct pci_devinst *pi = arg;
pci_lintr_assert(pi);
}
/*
* Toggle the COM port's intr pin depending on whether or not we have an
* interrupt condition to report to the processor.
*/
static void
pci_uart_toggle_intr(struct pci_uart_softc *sc)
{
uint8_t intr_reason;
intr_reason = pci_uart_intr_reason(sc);
if (intr_reason == IIR_NOPEND)
pci_lintr_deassert(sc->pi);
else
pci_lintr_assert(sc->pi);
}
/*
* WDT timer, start when guest OS start watchdog service; and re-start for
* each dog-kick / ping action if time out, it will trigger reboot or other
* action to guest OS
*/
static void
wdt_expired_handler(void *arg, uint64_t nexp)
{
struct pci_vdev *dev = (struct pci_vdev *)arg;
DPRINTF("wdt timer out! stage=%d, reboot=%d\n",
wdt_state.stage, wdt_state.reboot_enabled);
if (wdt_state.stage == 1) {
if (wdt_state.intr_enabled) {
if (pci_msi_enabled(dev))
pci_generate_msi(dev, 0);
else
pci_lintr_assert(dev);
wdt_state.intr_active = true;
}
wdt_state.stage = 2;
start_wdt_timer();
} else {
if (wdt_state.reboot_enabled) {
wdt_state.stage = 1;
wdt_timeout = 1;
/* watchdog timer out, set the uos to reboot */
vm_set_suspend_mode(VM_SUSPEND_FULL_RESET);
mevent_notify();
} else {
/* if not need reboot, just loop timer */
wdt_state.stage = 1;
start_wdt_timer();
}
}
}
