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Diffstat (limited to 'rust/qemu-api/src/sysbus.rs')
-rw-r--r-- | rust/qemu-api/src/sysbus.rs | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/rust/qemu-api/src/sysbus.rs b/rust/qemu-api/src/sysbus.rs deleted file mode 100644 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> {} |