static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus, const char *name, int devfn, PCIConfigReadFunc *config_read, PCIConfigWriteFunc *config_write, uint8_t header_type) { if (devfn < 0) { for(devfn = bus->devfn_min ; devfn < 256; devfn += 8) { if (!bus->devices[devfn]) goto found; } return NULL; found: ; } else if (bus->devices[devfn]) { return NULL; } pci_dev->bus = bus; pci_dev->devfn = devfn; pstrcpy(pci_dev->name, sizeof(pci_dev->name), name); memset(pci_dev->irq_state, 0, sizeof(pci_dev->irq_state)); pci_config_alloc(pci_dev); header_type &= ~PCI_HEADER_TYPE_MULTI_FUNCTION; if (header_type == PCI_HEADER_TYPE_NORMAL) { pci_set_default_subsystem_id(pci_dev); } pci_init_cmask(pci_dev); pci_init_wmask(pci_dev); if (header_type == PCI_HEADER_TYPE_BRIDGE) { pci_init_wmask_bridge(pci_dev); } if (!config_read) config_read = pci_default_read_config; if (!config_write) config_write = pci_default_write_config; pci_dev->config_read = config_read; pci_dev->config_write = config_write; bus->devices[devfn] = pci_dev; pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, PCI_NUM_PINS); pci_dev->version_id = 2; /* Current pci device vmstate version */ return pci_dev; }