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-rw-r--r--rust/qemu-api/src/sysbus.rs122
1 files changed, 0 insertions, 122 deletions
diff --git a/rust/qemu-api/src/sysbus.rs b/rust/qemu-api/src/sysbus.rs
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index e92502a..0000000
--- a/rust/qemu-api/src/sysbus.rs
+++ /dev/null
@@ -1,122 +0,0 @@
-// Copyright 2024 Red Hat, Inc.
-// Author(s): Paolo Bonzini <pbonzini@redhat.com>
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-//! Bindings to access `sysbus` functionality from Rust.
-
-use std::{ffi::CStr, ptr::addr_of_mut};
-
-pub use bindings::SysBusDeviceClass;
-
-use crate::{
- bindings,
- cell::{bql_locked, Opaque},
- irq::{IRQState, InterruptSource},
- memory::MemoryRegion,
- prelude::*,
- qdev::{DeviceImpl, DeviceState},
- qom::Owned,
-};
-
-/// A safe wrapper around [`bindings::SysBusDevice`].
-#[repr(transparent)]
-#[derive(Debug, qemu_api_macros::Wrapper)]
-pub struct SysBusDevice(Opaque<bindings::SysBusDevice>);
-
-unsafe impl Send for SysBusDevice {}
-unsafe impl Sync for SysBusDevice {}
-
-unsafe impl ObjectType for SysBusDevice {
- type Class = SysBusDeviceClass;
- const TYPE_NAME: &'static CStr =
- unsafe { CStr::from_bytes_with_nul_unchecked(bindings::TYPE_SYS_BUS_DEVICE) };
-}
-qom_isa!(SysBusDevice: DeviceState, Object);
-
-// TODO: add virtual methods
-pub trait SysBusDeviceImpl: DeviceImpl + IsA<SysBusDevice> {}
-
-impl SysBusDeviceClass {
- /// Fill in the virtual methods of `SysBusDeviceClass` based on the
- /// definitions in the `SysBusDeviceImpl` trait.
- pub fn class_init<T: SysBusDeviceImpl>(self: &mut SysBusDeviceClass) {
- self.parent_class.class_init::<T>();
- }
-}
-
-/// Trait for methods of [`SysBusDevice`] and its subclasses.
-pub trait SysBusDeviceMethods: ObjectDeref
-where
- Self::Target: IsA<SysBusDevice>,
-{
- /// Expose a memory region to the board so that it can give it an address
- /// in guest memory. Note that the ordering of calls to `init_mmio` is
- /// important, since whoever creates the sysbus device will refer to the
- /// region with a number that corresponds to the order of calls to
- /// `init_mmio`.
- fn init_mmio(&self, iomem: &MemoryRegion) {
- assert!(bql_locked());
- unsafe {
- bindings::sysbus_init_mmio(self.upcast().as_mut_ptr(), iomem.as_mut_ptr());
- }
- }
-
- /// Expose an interrupt source outside the device as a qdev GPIO output.
- /// Note that the ordering of calls to `init_irq` is important, since
- /// whoever creates the sysbus device will refer to the interrupts with
- /// a number that corresponds to the order of calls to `init_irq`.
- fn init_irq(&self, irq: &InterruptSource) {
- assert!(bql_locked());
- unsafe {
- bindings::sysbus_init_irq(self.upcast().as_mut_ptr(), irq.as_ptr());
- }
- }
-
- // TODO: do we want a type like GuestAddress here?
- fn mmio_addr(&self, id: u32) -> Option<u64> {
- assert!(bql_locked());
- // SAFETY: the BQL ensures that no one else writes to sbd.mmio[], and
- // the SysBusDevice must be initialized to get an IsA<SysBusDevice>.
- let sbd = unsafe { *self.upcast().as_ptr() };
- let id: usize = id.try_into().unwrap();
- if sbd.mmio[id].memory.is_null() {
- None
- } else {
- Some(sbd.mmio[id].addr)
- }
- }
-
- // TODO: do we want a type like GuestAddress here?
- fn mmio_map(&self, id: u32, addr: u64) {
- assert!(bql_locked());
- let id: i32 = id.try_into().unwrap();
- unsafe {
- bindings::sysbus_mmio_map(self.upcast().as_mut_ptr(), id, addr);
- }
- }
-
- // Owned<> is used here because sysbus_connect_irq (via
- // object_property_set_link) adds a reference to the IRQState,
- // which can prolong its life
- 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.upcast().as_mut_ptr(), id, irq.as_mut_ptr());
- }
- }
-
- fn sysbus_realize(&self) {
- // TODO: return an Error
- assert!(bql_locked());
- unsafe {
- bindings::sysbus_realize(
- self.upcast().as_mut_ptr(),
- addr_of_mut!(bindings::error_fatal),
- );
- }
- }
-}
-
-impl<R: ObjectDeref> SysBusDeviceMethods for R where R::Target: IsA<SysBusDevice> {}