From: Paolo Bonzini <[email protected]> Add the minimal support that is needed by pl011's event and tracepoint.
Reviewed-by: Zhao Liu <[email protected]> Reviewed-by: Stefan Hajnoczi <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]> Message-ID: <[email protected]> Signed-off-by: Stefan Hajnoczi <[email protected]> --- rust/hw/core/src/qdev.rs | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/rust/hw/core/src/qdev.rs b/rust/hw/core/src/qdev.rs index a4493dbf01..c3097a284d 100644 --- a/rust/hw/core/src/qdev.rs +++ b/rust/hw/core/src/qdev.rs @@ -411,6 +411,39 @@ fn init_gpio_out(&self, pins: &[InterruptSource]) { impl<R: ObjectDeref> DeviceMethods for R where R::Target: IsA<DeviceState> {} +impl Clock { + pub const PERIOD_1SEC: u64 = bindings::CLOCK_PERIOD_1SEC; + + pub const fn period_from_ns(ns: u64) -> u64 { + ns * Self::PERIOD_1SEC / 1_000_000_000 + } + + pub const fn period_from_hz(hz: u64) -> u64 { + if hz == 0 { + 0 + } else { + Self::PERIOD_1SEC / hz + } + } + + pub const fn period_to_hz(period: u64) -> u64 { + if period == 0 { + 0 + } else { + Self::PERIOD_1SEC / period + } + } + + pub const fn period(&self) -> u64 { + // SAFETY: Clock is returned by init_clock_in with zero value for period + unsafe { &*self.0.as_ptr() }.period + } + + pub const fn hz(&self) -> u64 { + Self::period_to_hz(self.period()) + } +} + unsafe impl ObjectType for Clock { type Class = ObjectClass; const TYPE_NAME: &'static CStr = -- 2.51.0
