Struct vm_device::device_manager::IoManager

pub struct IoManager { /* fields omitted */ }

System IO manager serving for all devices management and VM exit handling.

Implementations

impl IoManager

pub fn new() -> Self

Create an default IoManager with empty IO member.

pub fn register_mmio_resources(
    &mut self,
    device: Arc<dyn DeviceMmio + Send + Sync>,
    resources: &[Resource]
) -> Result<(), Error>

Register a new MMIO device with its allocated resources. VMM is responsible for providing the allocated resources to virtual device.

Arguments

• device: device instance object to be registered
• resources: resources that this device owns, might include port I/O and memory-mapped I/O ranges, irq number, etc.

pub fn register_pio_resources(
    &mut self,
    device: Arc<dyn DevicePio + Send + Sync>,
    resources: &[Resource]
) -> Result<(), Error>

Register a new PIO device with its allocated resources. VMM is responsible for providing the allocated resources to virtual device.

Arguments

• device: device instance object to be registered
• resources: resources that this device owns, might include port I/O and memory-mapped I/O ranges, irq number, etc.

pub fn register_resources<T: DeviceMmio + DevicePio + 'static + Send + Sync>(
    &mut self,
    device: Arc<T>,
    resources: &[Resource]
) -> Result<(), Error>

Register a new MMIO + PIO device with its allocated resources. VMM is responsible for providing the allocated resources to virtual device.

Arguments

• device: device instance object to be registered
• resources: resources that this device owns, might include port I/O and memory-mapped I/O ranges, irq number, etc.

pub fn deregister_resources(&mut self, resources: &[Resource]) -> usize

Deregister a device from IoManager, e.g. users specified removing. VMM pre-fetches the resources e.g. dev.get_assigned_resources() VMM is responsible for freeing the resources. Returns the number of deregistered devices.

Arguments

• resources: resources that this device owns, might include port I/O and memory-mapped I/O ranges, irq number, etc.

Trait Implementations

impl BusManager<MmioAddress> for IoManager

type D = Arc<dyn DeviceMmio + Send + Sync>

Type of the objects held by the bus.

fn bus(&self) -> &MmioBus<Arc<dyn DeviceMmio + Send + Sync>>

Return a reference to the bus.

fn bus_mut(&mut self) -> &mut MmioBus<Arc<dyn DeviceMmio + Send + Sync>>

Return a mutable reference to the bus.

impl BusManager<PioAddress> for IoManager

type D = Arc<dyn DevicePio + Send + Sync>

Type of the objects held by the bus.

fn bus(&self) -> &PioBus<Arc<dyn DevicePio + Send + Sync>>

Return a reference to the bus.

fn bus_mut(&mut self) -> &mut PioBus<Arc<dyn DevicePio + Send + Sync>>

Return a mutable reference to the bus.

impl Default for IoManager

fn default() -> IoManager

Returns the “default value” for a type.