Trait chipset_device::pio::ControlPortIoIntercept

pub trait ControlPortIoIntercept: Send + Sync {
    // Required methods
    fn region_name(&self) -> &str;
    fn map(&mut self, addr: u16);
    fn unmap(&mut self);
    fn addr(&self) -> Option<u16>;
    fn len(&self) -> u16;
    fn offset_of(&self, addr: u16) -> Option<u16>;
}

A trait to map/unmap a device-specific IO memory region.

Required Methods

fn region_name(&self) -> &str

Return the region’s name.

fn map(&mut self, addr: u16)

Enables the IO region at the given address.

This method will never fail, as devices are not expected to gracefully handle the case where an IO region overlaps with an existing region.

fn unmap(&mut self)

Disables the IO region.

fn addr(&self) -> Option<u16>

Return the currently mapped address.

Returns None if the region is currently unmapped.

fn len(&self) -> u16

Return the length of the region.

fn offset_of(&self, addr: u16) -> Option<u16>

Return the offset of addr from the region’s base address.

Returns None if the provided addr is outside of the memory region, or the region is currently unmapped.

Example

let foo_region = register.new_io_region("foo", 0x10);
foo_region.map(0x1000);
assert_eq!(foo_region.offset_of(0x1003), Some(3));
assert_eq!(foo_region.offset_of(0x900), None);
assert_eq!(foo_region.offset_of(0x1020), None);
foo_region.unmap();
assert_eq!(foo_region.offset_of(0x1003), None);

Trait Implementations

impl Inspect for dyn ControlPortIoIntercept

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

Inspects the object.

Implementations on Foreign Types

impl ControlPortIoIntercept for ()

fn region_name(&self) -> &str

fn map(&mut self, _addr: u16)

fn unmap(&mut self)

fn addr(&self) -> Option<u16>

fn len(&self) -> u16

fn offset_of(&self, _addr: u16) -> Option<u16>

Implementors