From 0ae1625177aba9ac70beb1556615530ddb18086d Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Mon, 2 Jul 2012 14:38:47 +0200 Subject: pci: Add INTx routing notifier This per-device notifier shall be triggered by any interrupt router along the path of a device's legacy interrupt signal on routing changes. For simplicity reasons and as this is a slow path anyway, no further details on the routing changes are provided. Instead, the callback is expected to use pci_device_route_intx_to_irq to check the effect of the change. Will be used by KVM PCI device assignment and VFIO. Signed-off-by: Jan Kiszka Signed-off-by: Michael S. Tsirkin --- hw/pci.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'hw/pci.c') diff --git a/hw/pci.c b/hw/pci.c index e80599f058..94601f28f9 100644 --- a/hw/pci.c +++ b/hw/pci.c @@ -1086,6 +1086,29 @@ PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin) return bus->route_intx_to_irq(bus->irq_opaque, pin); } +void pci_bus_fire_intx_routing_notifier(PCIBus *bus) +{ + PCIDevice *dev; + PCIBus *sec; + int i; + + for (i = 0; i < ARRAY_SIZE(bus->devices); ++i) { + dev = bus->devices[i]; + if (dev && dev->intx_routing_notifier) { + dev->intx_routing_notifier(dev); + } + QLIST_FOREACH(sec, &bus->child, sibling) { + pci_bus_fire_intx_routing_notifier(sec); + } + } +} + +void pci_device_set_intx_routing_notifier(PCIDevice *dev, + PCIINTxRoutingNotifier notifier) +{ + dev->intx_routing_notifier = notifier; +} + /***********************************************************/ /* monitor info on PCI */ -- cgit 1.4.1