Struct DmaController

pub struct DmaController { /* private fields */ }

Dual 8237 DMA controllers.

Implementations

impl DmaController

pub fn new() -> Self

Returns a new controller.

pub fn check_transfer_size(&mut self, channel_number: usize) -> u16

Checks the value of the DMA channel’s configured transfer size.

Corresponds to the check_transfer_size function in the IsaDmaChannel trait.

pub fn request( &mut self, channel_number: usize, direction: IsaDmaDirection, ) -> Option<IsaDmaBuffer>

Requests an access to ISA DMA channel buffer.

Corresponds to the request function in the IsaDmaChannel trait.

pub fn complete(&mut self, channel_number: usize)

Signals to the DMA controller that the transfer is concluded.

Corresponds to the complete function in the IsaDmaChannel trait.

Trait Implementations

impl ChangeDeviceState for DmaController

fn start(&mut self)

Starts a device, allowing it to interact with the guest asynchronously.

async fn stop(&mut self)

Stops a device’s asynchronous work.

async fn reset(&mut self)

Resets the device state to its initial state, for a fresh boot.

impl ChipsetDevice for DmaController

fn supports_pio(&mut self) -> Option<&mut dyn PortIoIntercept>

Optionally returns a trait object to send IO port intercepts to.

fn supports_mmio(&mut self) -> Option<&mut (dyn MmioIntercept + 'static)>

Optionally returns a trait object to send MMIO port intercepts to.

fn supports_pci(&mut self) -> Option<&mut (dyn PciConfigSpace + 'static)>

Optionally returns a trait object to send PCI config space accesses to.

fn supports_poll_device(&mut self) -> Option<&mut dyn PollDevice>

Optionally returns a trait object to send poll requests to.

fn supports_line_interrupt_target( &mut self, ) -> Option<&mut dyn LineInterruptTarget>

Optionally returns a trait object to send interrupt line changes to.

fn supports_handle_eoi(&mut self) -> Option<&mut dyn HandleEoi>

Optionally returns a trait object to send EOI requests to.

fn supports_acknowledge_pic_interrupt( &mut self, ) -> Option<&mut dyn AcknowledgePicInterrupt>

Optionally returns a trait object with which to acknowledge PIC interrupts.

impl Debug for DmaController

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl InspectMut for DmaController

fn inspect_mut(&mut self, req: Request<'_>)

Inspects the object.

impl PortIoIntercept for DmaController

fn io_read(&mut self, io_port: u16, data: &mut [u8]) -> IoResult

Dispatch an IO port read to the device with the given address.

fn io_write(&mut self, io_port: u16, data: &[u8]) -> IoResult

Dispatch an IO port write to the device with the given address.

fn get_static_regions(&mut self) -> &[(&str, RangeInclusive<u16>)]

Report a set of static io port regions (region_name, port_range) that cannot be remapped at runtime and are always registered.

impl SaveRestore for DmaController

type SavedState = SavedState

The concrete saved state type.

fn save(&mut self) -> Result<Self::SavedState, SaveError>

Saves the object’s state.

fn restore(&mut self, state: Self::SavedState) -> Result<(), RestoreError>

Restores the object’s state.