2844     PCIBus *iommu_bus = bus;  in pci_device_get_iommu_bus_devfn()  local
2847     while (iommu_bus && !iommu_bus->iommu_ops && iommu_bus->parent_dev) {  in pci_device_get_iommu_bus_devfn()
2848         PCIBus *parent_bus = pci_get_bus(iommu_bus->parent_dev);  in pci_device_get_iommu_bus_devfn()
2871         if (!pci_bus_is_express(iommu_bus)) {  in pci_device_get_iommu_bus_devfn()
2872             PCIDevice *parent = iommu_bus->parent_dev;  in pci_device_get_iommu_bus_devfn()
2877                 bus = iommu_bus;  in pci_device_get_iommu_bus_devfn()
2884         iommu_bus = parent_bus;  in pci_device_get_iommu_bus_devfn()
2888     assert(iommu_bus);  in pci_device_get_iommu_bus_devfn()
2890     if (pci_bus_bypass_iommu(bus) || !iommu_bus->iommu_ops) {  in pci_device_get_iommu_bus_devfn()
2891         iommu_bus = NULL;  in pci_device_get_iommu_bus_devfn()
2894     *piommu_bus = iommu_bus;  in pci_device_get_iommu_bus_devfn()
2908     PCIBus *iommu_bus;  in pci_device_iommu_address_space()  local
2911     pci_device_get_iommu_bus_devfn(dev, &iommu_bus, &bus, &devfn);  in pci_device_iommu_address_space()
2912     if (iommu_bus) {  in pci_device_iommu_address_space()
2913         return iommu_bus->iommu_ops->get_address_space(bus,  in pci_device_iommu_address_space()
2914                                  iommu_bus->iommu_opaque, devfn);  in pci_device_iommu_address_space()
2922     PCIBus *iommu_bus, *aliased_bus;  in pci_device_set_iommu_device()  local
2926     pci_device_get_iommu_bus_devfn(dev, &iommu_bus,  in pci_device_set_iommu_device()
2928     if (iommu_bus && iommu_bus->iommu_ops->set_iommu_device) {  in pci_device_set_iommu_device()
2931         return iommu_bus->iommu_ops->set_iommu_device(pci_get_bus(dev),  in pci_device_set_iommu_device()
2932                                                       iommu_bus->iommu_opaque,  in pci_device_set_iommu_device()
2940     PCIBus *iommu_bus;  in pci_device_unset_iommu_device()  local
2942     pci_device_get_iommu_bus_devfn(dev, &iommu_bus, NULL, NULL);  in pci_device_unset_iommu_device()
2943     if (iommu_bus && iommu_bus->iommu_ops->unset_iommu_device) {  in pci_device_unset_iommu_device()
2944         return iommu_bus->iommu_ops->unset_iommu_device(pci_get_bus(dev),  in pci_device_unset_iommu_device()
2945                                                         iommu_bus->iommu_opaque,  in pci_device_unset_iommu_device()