Trait PortRead

pub trait PortRead {
    // Required method
    unsafe fn read_from_port(port: u16) -> Self;
}

A helper trait that implements the read port operation.

On x86, I/O ports operate on either u8 (via inb/outb), u16 (via inw/outw), or u32 (via inl/outl). Therefore this trait is implemented for exactly these types.

Required Methods

unsafe fn read_from_port(port: u16) -> Self

Reads a Self value from the given port.

Safety

This function is unsafe because the I/O port could have side effects that violate memory safety.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl PortRead for u8

unsafe fn read_from_port(port: u16) -> u8

impl PortRead for u16

unsafe fn read_from_port(port: u16) -> u16

impl PortRead for u32

unsafe fn read_from_port(port: u16) -> u32

Implementors