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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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89b429c768
Updated error enums in device package to use thiserror crate Signed-off-by: SamrutGadde <samrut.gadde@gmail.com>
77 lines
2.5 KiB
Rust
77 lines
2.5 KiB
Rust
// Copyright 2020, ARM Limited.
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//
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// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
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use std::io;
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use std::result;
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use thiserror::Error;
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use vmm_sys_util::eventfd::EventFd;
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#[derive(Debug, Error)]
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pub enum Error {
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/// Invalid trigger mode.
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#[error("Invalid trigger mode")]
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InvalidTriggerMode,
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/// Invalid delivery mode.
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#[error("Invalid delivery mode")]
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InvalidDeliveryMode,
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/// Failed creating the interrupt source group.
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#[error("Failed creating the interrupt source group: {0}")]
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CreateInterruptSourceGroup(io::Error),
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/// Failed triggering the interrupt.
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#[error("Failed triggering the interrupt: {0}")]
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TriggerInterrupt(io::Error),
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/// Failed masking the interrupt.
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#[error("Failed masking the interrupt: {0}")]
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MaskInterrupt(io::Error),
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/// Failed unmasking the interrupt.
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#[error("Failed unmasking the interrupt: {0}")]
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UnmaskInterrupt(io::Error),
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/// Failed updating the interrupt.
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#[error("Failed updating the interrupt: {0}")]
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UpdateInterrupt(io::Error),
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/// Failed enabling the interrupt.
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#[error("Failed enabling the interrupt: {0}")]
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EnableInterrupt(io::Error),
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#[cfg(target_arch = "aarch64")]
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/// Failed creating GIC device.
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#[error("Failed creating GIC device: {0}")]
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CreateGic(hypervisor::HypervisorVmError),
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#[cfg(target_arch = "aarch64")]
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/// Failed restoring GIC device.
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#[error("Failed restoring GIC device: {0}")]
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RestoreGic(hypervisor::arch::aarch64::gic::Error),
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}
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type Result<T> = result::Result<T, Error>;
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pub struct MsiMessage {
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// Message Address Register
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// 31-20: Base address. Fixed value (0x0FEE)
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// 19-12: Destination ID
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// 11-4: Reserved
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// 3: Redirection Hint indication
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// 2: Destination Mode
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// 1-0: Reserved
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pub addr: u32,
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// Message Data Register
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// 32-16: Reserved
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// 15: Trigger Mode. 0 = Edge, 1 = Level
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// 14: Level. 0 = Deassert, 1 = Assert
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// 13-11: Reserved
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// 10-8: Delivery Mode
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// 7-0: Vector
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pub data: u32,
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}
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// Introduce trait InterruptController to uniform the interrupt
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// service provided for devices.
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// Device manager uses this trait without caring whether it is a
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// IOAPIC (X86) or GIC (Arm).
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pub trait InterruptController: Send {
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fn service_irq(&mut self, irq: usize) -> Result<()>;
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#[cfg(target_arch = "x86_64")]
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fn end_of_interrupt(&mut self, vec: u8);
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fn notifier(&self, irq: usize) -> Option<EventFd>;
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}
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