Struct FakeMmio 

pub struct FakeMmio {
    pub accesses: Vec<u64>,
    pub write_accesses: Vec<(u64, u32)>,
    pub barriers: usize,
    /* private fields */
}

In-memory fake MMIO region that records every access, for unit tests and driver realm fakes. Reads of unset offsets return zero.

Fields

accesses: Vec<u64>

Offsets read, in order.

write_accesses: Vec<(u64, u32)>

Writes performed, in order: (offset, value).

barriers: usize

Number of memory barriers performed.

Implementations

impl FakeMmio

pub fn new() -> Self

Creates an empty fake region.

pub fn set(&mut self, offset: u64, value: u32)

Sets the value returned for reads at offset.

pub fn fail_at(&mut self, offset: u64)

Makes reads or writes at offset fail with BackendError::Fault.

Trait Implementations

impl Clone for FakeMmio

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FakeMmio

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

Formats the value using the given formatter.

impl Default for FakeMmio

fn default() -> Self

Returns the “default value” for a type.

impl MmioBackend for FakeMmio

fn read32(&mut self, offset: u64) -> Result<u32, BackendError>

Performs one volatile 32-bit read at offset bytes from the start of the logical resource.

fn write32(&mut self, offset: u64, value: u32) -> Result<(), BackendError>

Performs one volatile 32-bit write at offset bytes from the start of the logical resource.

fn barrier(&mut self)

Applies a platform MMIO memory barrier.

impl ResourceBackend for FakeMmio

fn read32(&mut self, offset: u64) -> Result<u32, BackendError>

fn write32(&mut self, offset: u64, value: u32) -> Result<(), BackendError>

fn barrier(&mut self)

fn gpio_read(&mut self) -> Result<bool, BackendError>

fn gpio_write(&mut self, _value: bool) -> Result<(), BackendError>

fn i2c_transfer( &mut self, _write_data: &[u8], _read_length: usize, ) -> Result<Vec<u8>, BackendError>

fn spi_transmit(&mut self, _tx_data: &[u8]) -> Result<Vec<u8>, BackendError>

fn clock_enable(&mut self) -> Result<(), BackendError>

fn clock_disable(&mut self) -> Result<(), BackendError>

fn clock_is_enabled(&mut self) -> Result<bool, BackendError>

fn clock_set_rate(&mut self, _hz: u64) -> Result<(), BackendError>

fn clock_query_rate(&mut self, _hz_in: u64) -> Result<u64, BackendError>

fn clock_get_rate(&mut self) -> Result<u64, BackendError>

fn reset_assert(&mut self) -> Result<(), BackendError>

fn reset_deassert(&mut self) -> Result<(), BackendError>

fn reset_toggle(&mut self) -> Result<(), BackendError>

fn reset_status(&mut self) -> Result<bool, BackendError>

fn serial_read(&mut self) -> Result<Vec<u8>, BackendError>

fn serial_write(&mut self, _data: &[u8]) -> Result<(), BackendError>