Struct Bus 

pub struct Bus { /* private fields */ }

A device container for routing reads and writes over some address space.

This doesn’t have any restrictions on what kind of device or address space this applies to. The only restriction is that no two devices can overlap in this address space.

Implementations

impl Bus

pub fn new() -> Bus

Constructs an a bus with an empty address space.

pub fn resolve(&self, addr: u64) -> Option<(u64, u64, Arc<dyn BusDeviceSync>)>

Get a reference to a device residing inside the bus at address [addr].

pub fn insert( &self, device: Arc<dyn BusDeviceSync>, base: u64, len: u64, ) -> Result<()>

Insert a device into the Bus in the range [addr, addr + len].

pub fn remove(&self, base: u64, len: u64) -> Result<()>

Removes the device at the given address space range.

pub fn remove_by_device(&self, device: &Arc<dyn BusDeviceSync>) -> Result<()>

Removes all entries referencing the given device.

pub fn update_range( &self, old_base: u64, old_len: u64, new_base: u64, new_len: u64, ) -> Result<()>

Updates the address range for an existing device.

pub fn read(&self, addr: u64, data: &mut [u8]) -> Result<()>

Reads data from the device that owns the range containing addr and puts it into data.

Returns true on success, otherwise data is untouched.

pub fn write(&self, addr: u64, data: &[u8]) -> Result<Option<Arc<Barrier>>>

Writes data to the device that owns the range containing addr.

Returns true on success, otherwise data is untouched.

Trait Implementations

impl Debug for Bus

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

Formats the value using the given formatter.

impl Default for Bus

fn default() -> Bus

Returns the “default value” for a type.