Struct MsixEmulator

pub struct MsixEmulator { /* private fields */ }

Emulator for the hardware-level interface required to configure and trigger MSI-X interrupts on a PCI device.

Implementations

impl MsixEmulator

pub fn new( bar: u8, count: u16, register_msi: &mut dyn RegisterMsi, ) -> (Self, impl PciCapability + use<>)

Create a new MsixEmulator instance, along with with its associated PciCapability structure.

This implementation of MSI-X expects a dedicated BAR to store the vector and pending tables.

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DEVNOTE: This current implementation of MSI-X isn’t particularly “flexible” with respect to the various ways the PCI spec allows MSI-X to be implemented. e.g: it uses a shared BAR for the table and BPA, with fixed offsets into the BAR for both of those tables. It would be nice to re-visit this code and make it more flexible.

pub fn bar_len(&self) -> u64

Return the total length of the MSI-X BAR

pub fn read_u32(&self, offset: u16) -> u32

Read a u32 from the MSI-X BAR at the given offset.

pub fn write_u32(&mut self, offset: u16, val: u32)

Write a u32 to the MSI-X BAR at the given offset.

pub fn interrupt(&self, index: u16) -> Option<Interrupt>

Return an Interrupt associated with the particular MSI-X vector, or None if the index is out of bounds.

Trait Implementations

impl Clone for MsixEmulator

fn clone(&self) -> MsixEmulator

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.