rust: qdev: move bridge for realize and reset functions out of pl011

Allow the DeviceImpl trait to expose safe Rust functions.
rust_device_class_init<> adds thunks around the functions
in DeviceImpl.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2 files changed, 2 insertions, 29 deletions

diff --git a/rust/hw/char/pl011/src/device.rs b/rust/hw/char/pl011/src/device.rs
index 28b1924337..56403c3660 100644
--- a/rust/hw/char/pl011/src/device.rs
+++ b/rust/hw/char/pl011/src/device.rs
@@ -125,9 +125,8 @@ impl DeviceImpl for PL011State {
     fn vmsd() -> Option<&'static VMStateDescription> {
         Some(&device_class::VMSTATE_PL011)
     }
-    const REALIZE: Option<unsafe extern "C" fn(*mut DeviceState, *mut *mut Error)> =
-        Some(device_class::pl011_realize);
-    const RESET: Option<unsafe extern "C" fn(*mut DeviceState)> = Some(device_class::pl011_reset);
+    const REALIZE: Option<fn(&mut Self)> = Some(Self::realize);
+    const RESET: Option<fn(&mut Self)> = Some(Self::reset);
 }
 
 impl_device_class!(PL011State);
diff --git a/rust/hw/char/pl011/src/device_class.rs b/rust/hw/char/pl011/src/device_class.rs
index c61b6bb025..975c3d42be 100644
--- a/rust/hw/char/pl011/src/device_class.rs
+++ b/rust/hw/char/pl011/src/device_class.rs
@@ -92,29 +92,3 @@ qemu_api::declare_properties! {
         default = true
     ),
 }
-
-/// # Safety
-///
-/// We expect the FFI user of this function to pass a valid pointer, that has
-/// the same size as [`PL011State`]. We also expect the device is
-/// readable/writeable from one thread at any time.
-pub unsafe extern "C" fn pl011_realize(dev: *mut DeviceState, _errp: *mut *mut Error) {
-    unsafe {
-        assert!(!dev.is_null());
-        let mut state = NonNull::new_unchecked(dev.cast::<PL011State>());
-        state.as_mut().realize();
-    }
-}
-
-/// # Safety
-///
-/// We expect the FFI user of this function to pass a valid pointer, that has
-/// the same size as [`PL011State`]. We also expect the device is
-/// readable/writeable from one thread at any time.
-pub unsafe extern "C" fn pl011_reset(dev: *mut DeviceState) {
-    unsafe {
-        assert!(!dev.is_null());
-        let mut state = NonNull::new_unchecked(dev.cast::<PL011State>());
-        state.as_mut().reset();
-    }
-}