mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
synced 2026-08-05 02:19:16 +00:00
e8c330e220
Introduce definitions, implementations and error variants of RISC-V AIA (Advance Interrupt Architecture) interrupt controller. Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
86 lines
2.9 KiB
Rust
86 lines
2.9 KiB
Rust
// Copyright © 2024 Institute of Software, CAS. All rights reserved.
|
|
// Copyright 2020, ARM Limited.
|
|
//
|
|
// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
|
|
|
|
use std::{io, result};
|
|
|
|
use thiserror::Error;
|
|
use vmm_sys_util::eventfd::EventFd;
|
|
|
|
#[derive(Debug, Error)]
|
|
pub enum Error {
|
|
/// Invalid trigger mode.
|
|
#[error("Invalid trigger mode")]
|
|
InvalidTriggerMode,
|
|
/// Invalid delivery mode.
|
|
#[error("Invalid delivery mode")]
|
|
InvalidDeliveryMode,
|
|
/// Failed creating the interrupt source group.
|
|
#[error("Failed creating the interrupt source group: {0}")]
|
|
CreateInterruptSourceGroup(io::Error),
|
|
/// Failed triggering the interrupt.
|
|
#[error("Failed triggering the interrupt: {0}")]
|
|
TriggerInterrupt(io::Error),
|
|
/// Failed masking the interrupt.
|
|
#[error("Failed masking the interrupt: {0}")]
|
|
MaskInterrupt(io::Error),
|
|
/// Failed unmasking the interrupt.
|
|
#[error("Failed unmasking the interrupt: {0}")]
|
|
UnmaskInterrupt(io::Error),
|
|
/// Failed updating the interrupt.
|
|
#[error("Failed updating the interrupt: {0}")]
|
|
UpdateInterrupt(io::Error),
|
|
/// Failed enabling the interrupt.
|
|
#[error("Failed enabling the interrupt: {0}")]
|
|
EnableInterrupt(io::Error),
|
|
#[cfg(target_arch = "aarch64")]
|
|
/// Failed creating GIC device.
|
|
#[error("Failed creating GIC device: {0}")]
|
|
CreateGic(hypervisor::HypervisorVmError),
|
|
#[cfg(target_arch = "aarch64")]
|
|
/// 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>;
|
|
|
|
pub struct MsiMessage {
|
|
// Message Address Register
|
|
// 31-20: Base address. Fixed value (0x0FEE)
|
|
// 19-12: Destination ID
|
|
// 11-4: Reserved
|
|
// 3: Redirection Hint indication
|
|
// 2: Destination Mode
|
|
// 1-0: Reserved
|
|
pub addr: u32,
|
|
// Message Data Register
|
|
// 32-16: Reserved
|
|
// 15: Trigger Mode. 0 = Edge, 1 = Level
|
|
// 14: Level. 0 = Deassert, 1 = Assert
|
|
// 13-11: Reserved
|
|
// 10-8: Delivery Mode
|
|
// 7-0: Vector
|
|
pub data: u32,
|
|
}
|
|
|
|
// Introduce trait InterruptController to uniform the interrupt
|
|
// service provided for devices.
|
|
// Device manager uses this trait without caring whether it is a
|
|
// 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")]
|
|
fn end_of_interrupt(&mut self, vec: u8);
|
|
fn notifier(&self, irq: usize) -> Option<EventFd>;
|
|
}
|