Struct zircon_object::dev::BusTransactionInitiator

pub struct BusTransactionInitiator { /* fields omitted */ }

Bus Transaction Initiator.

Bus Transaction Initiators (BTIs) represent the bus mastering/DMA capability of a device, and can be used for granting a device access to memory.

Implementations

impl BusTransactionInitiator

pub fn create(iommu: Arc<Iommu>, bti_id: u64) -> Arc<Self>

Create a new bus transaction initiator.

pub fn get_info(&self) -> BtiInfo

Get information of BTI.

pub fn pin(
    self: &Arc<Self>,
    vmo: Arc<VmObject>,
    offset: usize,
    size: usize,
    perms: IommuPerms
) -> ZxResult<Arc<PinnedMemoryToken>>

Pin memory and grant access to it to the BTI.

pub fn release_quarantine(&self)

Releases all quarantined PMTs.

Trait Implementations

impl Debug for BusTransactionInitiator

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

Formats the value using the given formatter.

impl KernelObject for BusTransactionInitiator

fn id(&self) -> KoID

Get object’s KoID.

fn type_name(&self) -> &str

Get the name of the type of the kernel object.

fn name(&self) -> String

Get object’s name.

fn set_name(&self, name: &str)

Set object’s name.

fn signal(&self) -> Signal

Get the signal status.

fn signal_set(&self, signal: Signal)

Assert signal.

fn signal_clear(&self, signal: Signal)

Deassert signal.

fn signal_change(&self, clear: Signal, set: Signal)

Change signal status: first clear then set indicated bits.

fn add_signal_callback(&self, callback: SignalHandler)

Add callback for signal status changes.

fn get_child(&self, _id: KoID) -> ZxResult<Arc<dyn KernelObject>>

Attempt to find a child of the object with given KoID.

fn peer(&self) -> ZxResult<Arc<dyn KernelObject>>

Attempt to get the object’s peer.

fn related_koid(&self) -> KoID

If the object is related to another (such as the other end of a channel, or the parent of a job), returns the KoID of that object, otherwise returns zero.

fn allowed_signals(&self) -> Signal

Get object’s allowed signals.