static void vtd_realize(DeviceState *dev, Error **errp) { MachineState *ms = MACHINE(qdev_get_machine()); MachineClass *mc = MACHINE_GET_CLASS(ms); PCMachineState *pcms = PC_MACHINE(object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE)); PCIBus *bus; IntelIOMMUState *s = INTEL_IOMMU_DEVICE(dev); X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(dev); if (!pcms) { error_setg(errp, "Machine-type '%s' not supported by intel-iommu", mc->name); return; } bus = pcms->bus; x86_iommu->type = TYPE_INTEL; if (!vtd_decide_config(s, errp)) { return; } QLIST_INIT(&s->notifiers_list); memset(s->vtd_as_by_bus_num, 0, sizeof(s->vtd_as_by_bus_num)); memory_region_init_io(&s->csrmem, OBJECT(s), &vtd_mem_ops, s, "intel_iommu", DMAR_REG_SIZE); sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->csrmem); /* No corresponding destroy */ s->iotlb = g_hash_table_new_full(vtd_uint64_hash, vtd_uint64_equal, g_free, g_free); s->vtd_as_by_busptr = g_hash_table_new_full(vtd_uint64_hash, vtd_uint64_equal, g_free, g_free); vtd_init(s); sysbus_mmio_map(SYS_BUS_DEVICE(s), 0, Q35_HOST_BRIDGE_IOMMU_ADDR); pci_setup_iommu(bus, vtd_host_dma_iommu, dev); /* Pseudo address space under root PCI bus. */ pcms->ioapic_as = vtd_host_dma_iommu(bus, s, Q35_PSEUDO_DEVFN_IOAPIC); }