Struct El0PhysicalTimer 

pub struct El0PhysicalTimer();

Represents our Generic Physical Timer when we are running at EL0.

Note that for most of these APIs to work, EL0 needs to have been granted access using methods like El1PhysicalTimer::el0_access_physical_counter.

Implementations

impl El0PhysicalTimer

pub unsafe fn new() -> El0PhysicalTimer

Create an EL0 Timer handle for the Physical Timer.

EL2/EL1 has to grant permission for EL0 to use the Physical Timer, so check they did that.

Safety

Only create one of these at any given time, as they access shared mutable state within the processor and do read-modify-writes on that state.

Trait Implementations

impl GenericTimer for El0PhysicalTimer

fn frequency_hz(&self) -> u32

Get the timer frequency

fn counter(&self) -> u64

Get the current counter value.

fn counter_compare(&self) -> u64

Get the counter compare value.

fn counter_compare_set(&mut self, value: u64)

Set the counter compare value.

fn countdown(&self) -> u32

Get the current value of the countdown timer.

fn countdown_set(&mut self, duration_ticks: u32)

Set the value of the count-down timer.

fn enabled(&self) -> bool

This is timer enabled?

fn enable(&self, enabled: bool)

Enable/disable this timer

fn interrupt_masked(&self) -> bool

Is this timer’s interrupt masked?

fn interrupt_mask(&mut self, mask: bool)

Mask (or unmask) this timer’s interrupt.

fn interrupt_status(&self) -> bool

Has this timer’s interrupt fired?

fn delay_ticks(&mut self, ticks: u32)

Wait for some number of clock ticks

fn delay_ms(&mut self, ms: u32)

Delay for some number of milliseconds

fn delay_us(&mut self, us: u32)

Delay for some number of microseconds