From 5e588c9d08b0da64fab7f370e65744cb7a4174ef Mon Sep 17 00:00:00 2001
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Date: Mon, 8 Sep 2025 12:49:56 +0200
Subject: rust: split "hwcore" crate
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Link: https://lore.kernel.org/r/20250827104147.717203-16-marcandre.lureau@redhat.com
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 rust/qemu-api/src/irq.rs | 115 -----------------------------------------------
 1 file changed, 115 deletions(-)
 delete mode 100644 rust/qemu-api/src/irq.rs

(limited to 'rust/qemu-api/src/irq.rs')

diff --git a/rust/qemu-api/src/irq.rs b/rust/qemu-api/src/irq.rs
deleted file mode 100644
index fead2bbe8e..0000000000
--- a/rust/qemu-api/src/irq.rs
+++ /dev/null
@@ -1,115 +0,0 @@
-// Copyright 2024 Red Hat, Inc.
-// Author(s): Paolo Bonzini <pbonzini@redhat.com>
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-//! Bindings for interrupt sources
-
-use std::{
-    ffi::{c_int, CStr},
-    marker::PhantomData,
-    ptr,
-};
-
-use bql::BqlCell;
-use common::Opaque;
-use qom::{prelude::*, ObjectClass};
-
-use crate::bindings::{self, qemu_set_irq};
-
-/// 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.
-///
-/// As far as devices are concerned, interrupt sources are always active-high:
-/// for example, `InterruptSource<bool>`'s [`raise`](InterruptSource::raise)
-/// 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.
-///
-/// 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 [`crate::sysbus::SysBusDeviceMethods::init_irq`], and
-/// initially leaves the pointer to a NULL value, representing an unconnected
-/// interrupt. To connect it, whoever creates the device fills the pointer with
-/// the sink's `IRQState *`, for example using `sysbus_connect_irq`.  Because
-/// devices are generally shared objects, interrupt sources are an example of
-/// the interior mutability pattern.
-///
-/// Interrupt sources can only be triggered under the Big QEMU Lock; `BqlCell`
-/// allows access from whatever thread has it.
-#[derive(Debug)]
-#[repr(transparent)]
-pub struct InterruptSource<T = bool>
-where
-    c_int: From<T>,
-{
-    cell: BqlCell<*mut bindings::IRQState>,
-    _marker: PhantomData<T>,
-}
-
-// SAFETY: the implementation asserts via `BqlCell` that the BQL is taken
-unsafe impl<T> Sync for InterruptSource<T> where c_int: From<T> {}
-
-impl InterruptSource<bool> {
-    /// Send a low (`false`) value to the interrupt sink.
-    pub fn lower(&self) {
-        self.set(false);
-    }
-
-    /// Send a high-low pulse to the interrupt sink.
-    pub fn pulse(&self) {
-        self.set(true);
-        self.set(false);
-    }
-
-    /// Send a high (`true`) value to the interrupt sink.
-    pub fn raise(&self) {
-        self.set(true);
-    }
-}
-
-impl<T> InterruptSource<T>
-where
-    c_int: From<T>,
-{
-    /// Send `level` to the interrupt sink.
-    pub fn set(&self, level: T) {
-        let ptr = self.cell.get();
-        // SAFETY: the pointer is retrieved under the BQL and remains valid
-        // until the BQL is released, which is after qemu_set_irq() is entered.
-        unsafe {
-            qemu_set_irq(ptr, level.into());
-        }
-    }
-
-    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 bindings::IRQState {
-        assert!(!slice.is_empty());
-        slice[0].as_ptr()
-    }
-}
-
-impl Default for InterruptSource {
-    fn default() -> Self {
-        InterruptSource {
-            cell: BqlCell::new(ptr::null_mut()),
-            _marker: PhantomData,
-        }
-    }
-}
-
-unsafe impl ObjectType for IRQState {
-    type Class = ObjectClass;
-    const TYPE_NAME: &'static CStr =
-        unsafe { CStr::from_bytes_with_nul_unchecked(bindings::TYPE_IRQ) };
-}
-
-qom_isa!(IRQState: Object);
-- 
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