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devices: Introduce RISC-V AIA interrupt device

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Introduce definitions, implementations and error variants of RISC-V AIA
(Advance Interrupt Architecture) interrupt controller.

Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
This commit is contained in:
Ruoqing He
2024-12-04 15:52:19 +08:00
committed by Rob Bradford
parent ba78e331c6
commit e8c330e220
3 changed files with 156 additions and 1 deletions
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11
devices/src/interrupt_controller.rs
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@@ -1,3 +1,4 @@
// Copyright © 2024 Institute of Software, CAS. All rights reserved.
// Copyright 2020, ARM Limited.
//
// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
@@ -41,6 +42,14 @@ pub enum Error {
/// Failed restoring GIC device.
#[error("Failed restoring GIC device: {0}")]
RestoreGic(hypervisor::arch::aarch64::gic::Error),
#[cfg(target_arch = "riscv64")]
/// Failed creating AIA device.
#[error("Failed creating AIA device: {0}")]
CreateAia(hypervisor::HypervisorVmError),
#[cfg(target_arch = "riscv64")]
/// Failed restoring AIA device.
#[error("Failed restoring AIA device: {0}")]
RestoreAia(hypervisor::arch::riscv64::aia::Error),
}
type Result<T> = result::Result<T, Error>;
@@ -67,7 +76,7 @@ pub struct MsiMessage {
// Introduce trait InterruptController to uniform the interrupt
// service provided for devices.
// Device manager uses this trait without caring whether it is a
// IOAPIC (X86) or GIC (Arm).
// IOAPIC (X86), GIC (Arm) or AIA (RISC-V).
pub trait InterruptController: Send {
fn service_irq(&mut self, irq: usize) -> Result<()>;
#[cfg(target_arch = "x86_64")]