58  * Disabling BAR mmaping can be slow, but toggling it around INTx can
69  * other options with the x-intx-mmap-timeout-ms parameter (a value of
76     if (vdev->intx.pending) {  in vfio_intx_mmap_enable()
77         timer_mod(vdev->intx.mmap_timer,  in vfio_intx_mmap_enable()
78                        qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + vdev->intx.mmap_timeout);  in vfio_intx_mmap_enable()
89     if (!event_notifier_test_and_clear(&vdev->intx.interrupt)) {  in vfio_intx_interrupt()
93     trace_vfio_intx_interrupt(vdev->vbasedev.name, 'A' + vdev->intx.pin);  in vfio_intx_interrupt()
95     vdev->intx.pending = true;  in vfio_intx_interrupt()
98     if (vdev->intx.mmap_timeout) {  in vfio_intx_interrupt()
99         timer_mod(vdev->intx.mmap_timer,  in vfio_intx_interrupt()
100                        qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + vdev->intx.mmap_timeout);  in vfio_intx_interrupt()
108     if (!vdev->intx.pending) {  in vfio_intx_eoi()
114     vdev->intx.pending = false;  in vfio_intx_eoi()
122     int irq_fd = event_notifier_get_fd(&vdev->intx.interrupt);  in vfio_intx_enable_kvm()
125         vdev->intx.route.mode != PCI_INTX_ENABLED ||  in vfio_intx_enable_kvm()
133     vdev->intx.pending = false;  in vfio_intx_enable_kvm()
137     if (event_notifier_init(&vdev->intx.unmask, 0)) {  in vfio_intx_enable_kvm()
143                                            &vdev->intx.interrupt,  in vfio_intx_enable_kvm()
144                                            &vdev->intx.unmask,  in vfio_intx_enable_kvm()
145                                            vdev->intx.route.irq)) {  in vfio_intx_enable_kvm()
152                                 event_notifier_get_fd(&vdev->intx.unmask),  in vfio_intx_enable_kvm()
160     vdev->intx.kvm_accel = true;  in vfio_intx_enable_kvm()
167     kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, &vdev->intx.interrupt,  in vfio_intx_enable_kvm()
168                                           vdev->intx.route.irq);  in vfio_intx_enable_kvm()
170     event_notifier_cleanup(&vdev->intx.unmask);  in vfio_intx_enable_kvm()
183     if (!vdev->intx.kvm_accel) {  in vfio_intx_disable_kvm()
192     vdev->intx.pending = false;  in vfio_intx_disable_kvm()
195     /* Tell KVM to stop listening for an INTx irqfd */  in vfio_intx_disable_kvm()
196     if (kvm_irqchip_remove_irqfd_notifier_gsi(kvm_state, &vdev->intx.interrupt,  in vfio_intx_disable_kvm()
197                                               vdev->intx.route.irq)) {  in vfio_intx_disable_kvm()
198         error_report("vfio: Error: Failed to disable INTx irqfd: %m");  in vfio_intx_disable_kvm()
202     event_notifier_cleanup(&vdev->intx.unmask);  in vfio_intx_disable_kvm()
205     qemu_set_fd_handler(event_notifier_get_fd(&vdev->intx.interrupt),  in vfio_intx_disable_kvm()
208     vdev->intx.kvm_accel = false;  in vfio_intx_disable_kvm()
222                            vdev->intx.route.irq, route->irq);  in vfio_intx_update()
226     vdev->intx.route = *route;  in vfio_intx_update()
249     route = pci_device_route_intx_to_irq(&vdev->pdev, vdev->intx.pin);  in vfio_intx_routing_notifier()
251     if (pci_intx_route_changed(&vdev->intx.route, &route)) {  in vfio_intx_routing_notifier()
261     vfio_intx_update(vdev, &vdev->intx.route);  in vfio_irqchip_change()
278     vdev->intx.pin = pin - 1; /* Pin A (1) -> irq[0] */  in vfio_intx_enable()
287         vdev->intx.route = pci_device_route_intx_to_irq(&vdev->pdev,  in vfio_intx_enable()
288                                                         vdev->intx.pin);  in vfio_intx_enable()
292     ret = event_notifier_init(&vdev->intx.interrupt, 0);  in vfio_intx_enable()
297     fd = event_notifier_get_fd(&vdev->intx.interrupt);  in vfio_intx_enable()
303         event_notifier_cleanup(&vdev->intx.interrupt);  in vfio_intx_enable()
321     timer_del(vdev->intx.mmap_timer);  in vfio_intx_disable()
324     vdev->intx.pending = false;  in vfio_intx_disable()
328     fd = event_notifier_get_fd(&vdev->intx.interrupt);  in vfio_intx_disable()
330     event_notifier_cleanup(&vdev->intx.interrupt);  in vfio_intx_disable()
782          * out to fall back to INTx for this device.  in vfio_msi_enable()
1326      * device to INTx mode (if supported).  Therefore we need to first  in vfio_disable_interrupts()
1327      * disable MSI/X and then cleanup by disabling INTx.  in vfio_disable_interrupts()
2432      * Also put INTx Disable in known state.  in vfio_pci_pre_reset()
3173         vdev->intx.mmap_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL,  in vfio_realize()
3238     if (vdev->intx.mmap_timer) {  in vfio_realize()
3239         timer_free(vdev->intx.mmap_timer);  in vfio_realize()
3282     if (vdev->intx.mmap_timer) {  in vfio_exitfn()
3283         timer_free(vdev->intx.mmap_timer);  in vfio_exitfn()
3371     DEFINE_PROP_UINT32("x-intx-mmap-timeout-ms", VFIOPCIDevice,
3372                        intx.mmap_timeout, 1100),
3386     DEFINE_PROP_BOOL("x-no-kvm-intx", VFIOPCIDevice, no_kvm_intx, false),