Struct zircon_object::dev::Iommu

pub struct Iommu { /* fields omitted */ }

Iommu refers to DummyIommu in zircon.

A dummy implementation, do not take it serious.

Implementations

impl Iommu

pub fn create() -> Arc<Self>

Create a new IOMMU.

pub fn is_valid_bus_txn_id(&self) -> bool

Check if a bus_txn_id is valid for this IOMMU.

pub fn minimum_contiguity(&self) -> usize

Returns the number of bytes that Map() can guarantee, upon success, to find a contiguous address range for.

pub fn aspace_size(&self) -> usize

The number of bytes in the address space (UINT64_MAX if 2^64).

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

Grant a device access to the range of pages given by [offset, offset + size) in vmo.

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

Same as map, but with additional guarantee that this will never return a partial mapping. It will either return a single contiguous mapping or return a failure.

Trait Implementations

impl Debug for Iommu

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

Formats the value using the given formatter.

impl KernelObject for Iommu

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.