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rust: irq: wrap IRQState with Opaque<>

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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2025-02-14 12:05:59 +01:00
parent a32b239699
commit 9c9a6a889c
2 changed files with 11 additions and 5 deletions
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15
rust/qemu-api/src/irq.rs
View file

@ -8,10 +8,16 @@ use std::{ffi::CStr, marker::PhantomData, os::raw::c_int, ptr};
use crate::{
bindings::{self, qemu_set_irq},
cell::Opaque,
prelude::*,
qom::ObjectClass,
};
/// An opaque wrapper around [`bindings::IRQState`].
#[repr(transparent)]
#[derive(Debug, qemu_api_macros::Wrapper)]
pub struct IRQState(Opaque<bindings::IRQState>);
/// Interrupt sources are used by devices to pass changes to a value (typically
/// a boolean). The interrupt sink is usually an interrupt controller or
/// GPIO controller.
@ -21,8 +27,7 @@ use crate::{
/// method sends a `true` value to the sink. If the guest has to see a
/// different polarity, that change is performed by the board between the
/// device and the interrupt controller.
pub type IRQState = bindings::IRQState;
///
/// Interrupts are implemented as a pointer to the interrupt "sink", which has
/// type [`IRQState`]. A device exposes its source as a QOM link property using
/// a function such as [`SysBusDeviceMethods::init_irq`], and
@ -40,7 +45,7 @@ pub struct InterruptSource<T = bool>
where
c_int: From<T>,
{
cell: BqlCell<*mut IRQState>,
cell: BqlCell<*mut bindings::IRQState>,
_marker: PhantomData<T>,
}
@ -79,11 +84,11 @@ where
}
}
pub(crate) const fn as_ptr(&self) -> *mut *mut IRQState {
pub(crate) const fn as_ptr(&self) -> *mut *mut bindings::IRQState {
self.cell.as_ptr()
}
pub(crate) const fn slice_as_ptr(slice: &[Self]) -> *mut *mut IRQState {
pub(crate) const fn slice_as_ptr(slice: &[Self]) -> *mut *mut bindings::IRQState {
assert!(!slice.is_empty());
slice[0].as_ptr()
}

1
rust/qemu-api/src/sysbus.rs
View file

@ -79,6 +79,7 @@ where
fn connect_irq(&self, id: u32, irq: &Owned<IRQState>) {
assert!(bql_locked());
let id: i32 = id.try_into().unwrap();
let irq: &IRQState = irq;
unsafe {
bindings::sysbus_connect_irq(self.as_mut_ptr(), id, irq.as_mut_ptr());
}