Method add_pci_device

vmm/src/device_manager.rs:4006–4063

(
        &mut self,
        bus_device: Arc<dyn BusDeviceSync>,
        pci_device: Arc<Mutex<dyn PciDevice>>,
        segment_id: u16,
        bdf: PciBdf,
        resources: Option<Vec<Resource>>,

    }

    fn add_pci_device(
        &mut self,
        bus_device: Arc<dyn BusDeviceSync>,
        pci_device: Arc<Mutex<dyn PciDevice>>,
        segment_id: u16,
        bdf: PciBdf,
        resources: Option<Vec<Resource>>,
    ) -> DeviceManagerResult<Vec<Resource>> {
        let bars = pci_device
            .lock()
            .unwrap()
            .allocate_bars(
                &mut self.address_manager.allocator.lock().unwrap(),
                &mut self.pci_segments[segment_id as usize]
                    .mem32_allocator
                    .lock()
                    .unwrap(),
                &mut self.pci_segments[segment_id as usize]
                    .mem64_allocator
                    .lock()
                    .unwrap(),
                resources,
            )
            .map_err(DeviceManagerError::AllocateBars)?;

        let mut pci_bus = self.pci_segments[segment_id as usize]
            .pci_bus
            .lock()
            .unwrap();

        pci_bus
            .add_device(bdf.device(), pci_device)
            .map_err(DeviceManagerError::AddPciDevice)?;

        self.bus_devices.push(Arc::clone(&bus_device));

        pci_bus
            .register_mapping(
                bus_device,
                self.address_manager.io_bus.as_ref(),
                self.address_manager.mmio_bus.as_ref(),
                bars.clone(),
            )
            .map_err(DeviceManagerError::AddPciDevice)?;

        let mut new_resources = Vec::new();
        for bar in bars {
            new_resources.push(Resource::PciBar {
                index: bar.idx(),
                base: bar.addr(),
                size: bar.size(),
                type_: bar.region_type().into(),
                prefetchable: bar.prefetchable().into(),
            });
        }

        Ok(new_resources)
    }