xref: /openbmc/qemu/rust/qemu-api/src/device_class.rs (revision 113c6688)
1 // Copyright 2024, Linaro Limited
2 // Author(s): Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
3 // SPDX-License-Identifier: GPL-2.0-or-later
4 
5 #[macro_export]
6 macro_rules! device_class_init {
7     ($func:ident, props => $props:ident, realize_fn => $realize_fn:expr, legacy_reset_fn => $legacy_reset_fn:expr, vmsd => $vmsd:ident$(,)*) => {
8         pub unsafe extern "C" fn $func(
9             klass: *mut $crate::bindings::ObjectClass,
10             _: *mut ::core::ffi::c_void,
11         ) {
12             let mut dc =
13                 ::core::ptr::NonNull::new(klass.cast::<$crate::bindings::DeviceClass>()).unwrap();
14             unsafe {
15                 dc.as_mut().realize = $realize_fn;
16                 dc.as_mut().vmsd = &$vmsd;
17                 $crate::bindings::device_class_set_legacy_reset(dc.as_mut(), $legacy_reset_fn);
18                 $crate::bindings::device_class_set_props(dc.as_mut(), $props.as_ptr());
19             }
20         }
21     };
22 }
23 
24 #[macro_export]
25 macro_rules! define_property {
26     ($name:expr, $state:ty, $field:expr, $prop:expr, $type:expr, default = $defval:expr$(,)*) => {
27         $crate::bindings::Property {
28             // use associated function syntax for type checking
29             name: ::core::ffi::CStr::as_ptr($name),
30             info: $prop,
31             offset: ::core::mem::offset_of!($state, $field) as isize,
32             set_default: true,
33             defval: $crate::bindings::Property__bindgen_ty_1 { u: $defval as u64 },
34             ..$crate::zeroable::Zeroable::ZERO
35         }
36     };
37     ($name:expr, $state:ty, $field:expr, $prop:expr, $type:expr$(,)*) => {
38         $crate::bindings::Property {
39             // use associated function syntax for type checking
40             name: ::core::ffi::CStr::as_ptr($name),
41             info: $prop,
42             offset: ::core::mem::offset_of!($state, $field) as isize,
43             set_default: false,
44             ..$crate::zeroable::Zeroable::ZERO
45         }
46     };
47 }
48 
49 #[macro_export]
50 macro_rules! declare_properties {
51     ($ident:ident, $($prop:expr),*$(,)*) => {
52         pub static $ident: [$crate::bindings::Property; {
53             let mut len = 1;
54             $({
55                 _ = stringify!($prop);
56                 len += 1;
57             })*
58             len
59         }] = [
60             $($prop),*,
61             $crate::zeroable::Zeroable::ZERO,
62         ];
63     };
64 }
65