static int assigned_initfn(struct PCIDevice *pci_dev) { AssignedDevice *dev = DO_UPCAST(AssignedDevice, dev, pci_dev); uint8_t e_intx; int r; Error *local_err = NULL; if (!kvm_enabled()) { error_report("pci-assign: error: requires KVM support"); return -1; } if (!dev->host.domain && !dev->host.bus && !dev->host.slot && !dev->host.function) { error_report("pci-assign: error: no host device specified"); return -1; } /* * Set up basic config space access control. Will be further refined during * device initialization. */ assigned_dev_emulate_config_read(dev, 0, PCI_CONFIG_SPACE_SIZE); assigned_dev_direct_config_read(dev, PCI_STATUS, 2); assigned_dev_direct_config_read(dev, PCI_REVISION_ID, 1); assigned_dev_direct_config_read(dev, PCI_CLASS_PROG, 3); assigned_dev_direct_config_read(dev, PCI_CACHE_LINE_SIZE, 1); assigned_dev_direct_config_read(dev, PCI_LATENCY_TIMER, 1); assigned_dev_direct_config_read(dev, PCI_BIST, 1); assigned_dev_direct_config_read(dev, PCI_CARDBUS_CIS, 4); assigned_dev_direct_config_read(dev, PCI_SUBSYSTEM_VENDOR_ID, 2); assigned_dev_direct_config_read(dev, PCI_SUBSYSTEM_ID, 2); assigned_dev_direct_config_read(dev, PCI_CAPABILITY_LIST + 1, 7); assigned_dev_direct_config_read(dev, PCI_MIN_GNT, 1); assigned_dev_direct_config_read(dev, PCI_MAX_LAT, 1); memcpy(dev->emulate_config_write, dev->emulate_config_read, sizeof(dev->emulate_config_read)); get_real_device(dev, &local_err); if (local_err) { qerror_report_err(local_err); error_free(local_err); goto out; } if (assigned_device_pci_cap_init(pci_dev, &local_err) < 0) { qerror_report_err(local_err); error_free(local_err); goto out; } /* intercept MSI-X entry page in the MMIO */ if (dev->cap.available & ASSIGNED_DEVICE_CAP_MSIX) { assigned_dev_register_msix_mmio(dev, &local_err); if (local_err) { qerror_report_err(local_err); error_free(local_err); goto out; } } /* handle real device's MMIO/PIO BARs */ assigned_dev_register_regions(dev->real_device.regions, dev->real_device.region_number, dev, &local_err); if (local_err) { qerror_report_err(local_err); error_free(local_err); goto out; } /* handle interrupt routing */ e_intx = dev->dev.config[PCI_INTERRUPT_PIN] - 1; dev->intpin = e_intx; dev->intx_route.mode = PCI_INTX_DISABLED; dev->intx_route.irq = -1; /* assign device to guest */ r = assign_device(dev); if (r < 0) { goto out; } /* assign legacy INTx to the device */ r = assign_intx(dev); if (r < 0) { goto assigned_out; } assigned_dev_load_option_rom(dev); add_boot_device_path(dev->bootindex, &pci_dev->qdev, NULL); return 0; assigned_out: deassign_device(dev); out: free_assigned_device(dev); return -1; }