PCIBus *pci_grackle_init(uint32_t base, qemu_irq *pic, MemoryRegion *address_space_mem, MemoryRegion *address_space_io) { DeviceState *dev; SysBusDevice *s; PCIHostState *phb; GrackleState *d; dev = qdev_create(NULL, TYPE_GRACKLE_PCI_HOST_BRIDGE); qdev_init_nofail(dev); s = SYS_BUS_DEVICE(dev); phb = PCI_HOST_BRIDGE(dev); d = GRACKLE_PCI_HOST_BRIDGE(dev); memory_region_init(&d->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL); memory_region_init_alias(&d->pci_hole, OBJECT(s), "pci-hole", &d->pci_mmio, 0x80000000ULL, 0x7e000000ULL); memory_region_add_subregion(address_space_mem, 0x80000000ULL, &d->pci_hole); phb->bus = pci_register_bus(dev, "pci", pci_grackle_set_irq, pci_grackle_map_irq, pic, &d->pci_mmio, address_space_io, 0, 4, TYPE_PCI_BUS); pci_create_simple(phb->bus, 0, "grackle"); sysbus_mmio_map(s, 0, base); sysbus_mmio_map(s, 1, base + 0x00200000); return phb->bus; }