mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
synced 2024-09-12 10:04:51 +00:00
This commit relies on the new vsock::unix module to create the backend that will be used from the virtio-vsock device. The concept of backend is interesting here as it would allow for a vhost kernel backend to be plugged if that was needed someday. Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
1060 lines
34 KiB
Rust
1060 lines
34 KiB
Rust
// Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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//
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// Portions Copyright 2017 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE-BSD-3-Clause file.
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//
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// Copyright © 2019 Intel Corporation
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//
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// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
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//
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use crate::config::ConsoleOutputMode;
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use crate::vm::VmInfo;
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use devices::ioapic;
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use kvm_bindings::{kvm_msi, kvm_userspace_memory_region};
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use kvm_ioctls::*;
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use libc::O_TMPFILE;
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use libc::{EFD_NONBLOCK, TIOCGWINSZ};
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use net_util::Tap;
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use pci::{
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InterruptDelivery, InterruptParameters, PciConfigIo, PciDevice, PciInterruptPin, PciRoot,
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};
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use qcow::{self, ImageType, QcowFile};
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use std::fs::{File, OpenOptions};
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use std::io::{self, sink, stdout};
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use std::os::unix::fs::OpenOptionsExt;
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use std::os::unix::io::AsRawFd;
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use std::ptr::null_mut;
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use std::result;
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use std::sync::{Arc, Mutex, RwLock};
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use vfio::{VfioDevice, VfioPciDevice, VfioPciError};
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use vm_allocator::SystemAllocator;
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use vm_memory::{Address, GuestMemoryMmap, GuestUsize};
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use vm_virtio::transport::VirtioPciDevice;
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use vm_virtio::{VirtioSharedMemory, VirtioSharedMemoryList};
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use vmm_sys_util::eventfd::EventFd;
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// IOAPIC address range
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const IOAPIC_RANGE_ADDR: u64 = 0xfec0_0000;
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const IOAPIC_RANGE_SIZE: u64 = 0x20;
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/// Errors associated with device manager
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#[derive(Debug)]
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pub enum DeviceManagerError {
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/// Cannot create EventFd.
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EventFd(io::Error),
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/// Cannot open disk path
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Disk(io::Error),
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/// Cannot create vhost-user-net device
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CreateVhostUserNet(vm_virtio::vhost_user::Error),
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/// Cannot create virtio-blk device
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CreateVirtioBlock(io::Error),
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/// Cannot create virtio-net device
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CreateVirtioNet(vm_virtio::net::Error),
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/// Cannot create virtio-console device
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CreateVirtioConsole(io::Error),
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/// Cannot create virtio-rng device
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CreateVirtioRng(io::Error),
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/// Cannot create virtio-fs device
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CreateVirtioFs(vm_virtio::vhost_user::Error),
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/// Cannot create virtio-pmem device
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CreateVirtioPmem(io::Error),
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/// Cannot create virtio-vsock device
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CreateVirtioVsock(io::Error),
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/// Failed converting Path to &str for the virtio-vsock device.
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CreateVsockConvertPath,
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/// Cannot create virtio-vsock backend
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CreateVsockBackend(vm_virtio::vsock::VsockUnixError),
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/// Failed parsing disk image format
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DetectImageType(qcow::Error),
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/// Cannot open qcow disk path
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QcowDeviceCreate(qcow::Error),
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/// Cannot open tap interface
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OpenTap(net_util::TapError),
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/// Cannot allocate IRQ.
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AllocateIrq,
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/// Cannot configure the IRQ.
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Irq(io::Error),
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/// Cannot allocate PCI BARs
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AllocateBars(pci::PciDeviceError),
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/// Cannot register ioevent.
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RegisterIoevent(io::Error),
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/// Cannot create virtio device
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VirtioDevice(vmm_sys_util::errno::Error),
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/// Cannot add PCI device
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AddPciDevice(pci::PciRootError),
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/// Cannot open persistent memory file
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PmemFileOpen(io::Error),
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/// Cannot set persistent memory file size
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PmemFileSetLen(io::Error),
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/// Cannot find a memory range for persistent memory
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PmemRangeAllocation,
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/// Cannot find a memory range for virtio-fs
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FsRangeAllocation,
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/// Error creating serial output file
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SerialOutputFileOpen(io::Error),
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/// Error creating console output file
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ConsoleOutputFileOpen(io::Error),
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/// Cannot create a VFIO device
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VfioCreate(vfio::VfioError),
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/// Cannot create a VFIO PCI device
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VfioPciCreate(vfio::VfioPciError),
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/// Failed to map VFIO MMIO region.
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VfioMapRegion(VfioPciError),
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/// Failed to create the KVM device.
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CreateKvmDevice(io::Error),
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/// Failed to memory map.
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Mmap(io::Error),
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/// Cannot add legacy device to Bus.
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BusError(devices::BusError),
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}
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pub type DeviceManagerResult<T> = result::Result<T, DeviceManagerError>;
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struct BusInfo<'a> {
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io: &'a mut devices::Bus,
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mmio: &'a mut devices::Bus,
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}
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struct InterruptInfo<'a> {
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msi_capable: bool,
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ioapic: &'a Option<Arc<Mutex<ioapic::Ioapic>>>,
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}
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struct KernelIoapicIrq {
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evt: EventFd,
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}
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impl KernelIoapicIrq {
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fn new(evt: EventFd) -> Self {
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KernelIoapicIrq { evt }
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}
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}
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impl devices::Interrupt for KernelIoapicIrq {
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fn deliver(&self) -> result::Result<(), io::Error> {
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self.evt.write(1)
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}
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}
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struct UserIoapicIrq {
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ioapic: Arc<Mutex<ioapic::Ioapic>>,
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irq: usize,
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}
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impl UserIoapicIrq {
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fn new(ioapic: Arc<Mutex<ioapic::Ioapic>>, irq: usize) -> Self {
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UserIoapicIrq { ioapic, irq }
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}
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}
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impl devices::Interrupt for UserIoapicIrq {
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fn deliver(&self) -> result::Result<(), io::Error> {
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self.ioapic
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.lock()
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.unwrap()
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.service_irq(self.irq)
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.map_err(|e| {
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std::io::Error::new(
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std::io::ErrorKind::Other,
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format!("failed to inject IRQ #{}: {:?}", self.irq, e),
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)
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})
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}
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}
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pub fn get_win_size() -> (u16, u16) {
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#[repr(C)]
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struct WS {
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rows: u16,
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cols: u16,
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};
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let ws: WS = WS {
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rows: 0u16,
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cols: 0u16,
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};
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unsafe {
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libc::ioctl(0, TIOCGWINSZ, &ws);
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}
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(ws.cols, ws.rows)
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}
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pub struct Console {
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// Serial port on 0x3f8
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serial: Option<Arc<Mutex<devices::legacy::Serial>>>,
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console_input: Option<Arc<vm_virtio::ConsoleInput>>,
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input_enabled: bool,
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}
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impl Console {
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pub fn queue_input_bytes(&self, out: &[u8]) -> vmm_sys_util::errno::Result<()> {
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if self.serial.is_some() {
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self.serial
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.as_ref()
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.unwrap()
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.lock()
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.expect("Failed to process stdin event due to poisoned lock")
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.queue_input_bytes(out)?;
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}
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if self.console_input.is_some() {
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self.console_input.as_ref().unwrap().queue_input_bytes(out);
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}
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Ok(())
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}
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pub fn update_console_size(&self, cols: u16, rows: u16) {
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if self.console_input.is_some() {
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self.console_input
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.as_ref()
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.unwrap()
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.update_console_size(cols, rows)
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}
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}
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pub fn input_enabled(&self) -> bool {
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self.input_enabled
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}
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}
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pub struct DeviceManager {
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io_bus: devices::Bus,
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mmio_bus: devices::Bus,
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// Console abstraction
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console: Arc<Console>,
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// i8042 device for i8042 reset
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i8042: Arc<Mutex<devices::legacy::I8042Device>>,
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#[cfg(feature = "acpi")]
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// ACPI device for reboot/shutdwon
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acpi_device: Arc<Mutex<devices::AcpiShutdownDevice>>,
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// IOAPIC
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ioapic: Option<Arc<Mutex<ioapic::Ioapic>>>,
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// PCI root
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pci: Arc<Mutex<PciConfigIo>>,
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// mmap()ed region to unmap on drop
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mmap_regions: Vec<(*mut libc::c_void, usize)>,
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}
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impl DeviceManager {
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pub fn new(
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vm_info: &VmInfo,
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allocator: &mut SystemAllocator,
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msi_capable: bool,
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userspace_ioapic: bool,
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mut mem_slots: u32,
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exit_evt: &EventFd,
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reset_evt: &EventFd,
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) -> DeviceManagerResult<Self> {
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let mut io_bus = devices::Bus::new();
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let mut mmio_bus = devices::Bus::new();
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let mut buses = BusInfo {
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io: &mut io_bus,
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mmio: &mut mmio_bus,
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};
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let ioapic = if userspace_ioapic {
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// Create IOAPIC
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Some(Arc::new(Mutex::new(ioapic::Ioapic::new(
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vm_info.vm_fd.clone(),
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))))
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} else {
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None
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};
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let interrupt_info = InterruptInfo {
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msi_capable,
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ioapic: &ioapic,
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};
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let serial_writer: Option<Box<dyn io::Write + Send>> = match vm_info.vm_cfg.serial.mode {
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ConsoleOutputMode::File => Some(Box::new(
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File::create(vm_info.vm_cfg.serial.file.unwrap())
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.map_err(DeviceManagerError::SerialOutputFileOpen)?,
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)),
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ConsoleOutputMode::Tty => Some(Box::new(stdout())),
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ConsoleOutputMode::Off | ConsoleOutputMode::Null => None,
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};
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let serial = if vm_info.vm_cfg.serial.mode != ConsoleOutputMode::Off {
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// Serial is tied to IRQ #4
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let serial_irq = 4;
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let interrupt: Box<dyn devices::Interrupt> = if let Some(ioapic) = &ioapic {
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Box::new(UserIoapicIrq::new(ioapic.clone(), serial_irq))
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} else {
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let serial_evt = EventFd::new(EFD_NONBLOCK).map_err(DeviceManagerError::EventFd)?;
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vm_info
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.vm_fd
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.register_irqfd(serial_evt.as_raw_fd(), serial_irq as u32)
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.map_err(DeviceManagerError::Irq)?;
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Box::new(KernelIoapicIrq::new(serial_evt))
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};
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Some(Arc::new(Mutex::new(devices::legacy::Serial::new(
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interrupt,
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serial_writer,
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))))
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} else {
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None
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};
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// Add a shutdown device (i8042)
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let i8042 = Arc::new(Mutex::new(devices::legacy::I8042Device::new(
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reset_evt.try_clone().map_err(DeviceManagerError::EventFd)?,
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)));
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#[cfg(feature = "acpi")]
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let acpi_device = Arc::new(Mutex::new(devices::AcpiShutdownDevice::new(
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exit_evt.try_clone().map_err(DeviceManagerError::EventFd)?,
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reset_evt.try_clone().map_err(DeviceManagerError::EventFd)?,
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)));
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let pci_root = PciRoot::new(None);
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let mut pci = PciConfigIo::new(pci_root);
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let console_writer: Option<Box<dyn io::Write + Send>> = match vm_info.vm_cfg.console.mode {
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ConsoleOutputMode::File => Some(Box::new(
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File::create(vm_info.vm_cfg.console.file.unwrap())
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.map_err(DeviceManagerError::ConsoleOutputFileOpen)?,
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)),
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ConsoleOutputMode::Tty => Some(Box::new(stdout())),
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ConsoleOutputMode::Null => Some(Box::new(sink())),
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ConsoleOutputMode::Off => None,
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};
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let (col, row) = get_win_size();
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let console_input = if console_writer.is_some() {
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let (virtio_console_device, console_input) =
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vm_virtio::Console::new(console_writer, col, row)
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.map_err(DeviceManagerError::CreateVirtioConsole)?;
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DeviceManager::add_virtio_pci_device(
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Box::new(virtio_console_device),
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vm_info.memory,
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allocator,
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vm_info.vm_fd,
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&mut pci,
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&mut buses,
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&interrupt_info,
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)?;
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Some(console_input)
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} else {
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None
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};
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let console = Arc::new(Console {
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serial,
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console_input,
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input_enabled: vm_info.vm_cfg.serial.mode.input_enabled()
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|| vm_info.vm_cfg.console.mode.input_enabled(),
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});
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let mut mmap_regions = Vec::new();
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DeviceManager::add_virtio_devices(
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vm_info,
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allocator,
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&mut pci,
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&mut buses,
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&interrupt_info,
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&mut mem_slots,
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&mut mmap_regions,
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)?;
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DeviceManager::add_vfio_devices(vm_info, allocator, &mut pci, &mut buses, mem_slots)?;
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let pci = Arc::new(Mutex::new(pci));
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Ok(DeviceManager {
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io_bus,
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mmio_bus,
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console,
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i8042,
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#[cfg(feature = "acpi")]
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acpi_device,
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ioapic,
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pci,
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mmap_regions,
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})
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}
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fn add_virtio_devices(
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vm_info: &VmInfo,
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allocator: &mut SystemAllocator,
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pci: &mut PciConfigIo,
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buses: &mut BusInfo,
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interrupt_info: &InterruptInfo,
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mut mem_slots: &mut u32,
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mmap_regions: &mut Vec<(*mut libc::c_void, usize)>,
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) -> DeviceManagerResult<()> {
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// Add virtio-blk if required
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DeviceManager::add_virtio_block_devices(vm_info, allocator, pci, buses, &interrupt_info)?;
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// Add virtio-net if required
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DeviceManager::add_virtio_net_devices(vm_info, allocator, pci, buses, &interrupt_info)?;
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// Add virtio-rng if required
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DeviceManager::add_virtio_rng_devices(vm_info, allocator, pci, buses, &interrupt_info)?;
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// Add virtio-fs if required
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DeviceManager::add_virtio_fs_devices(
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vm_info,
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allocator,
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pci,
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buses,
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&interrupt_info,
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&mut mem_slots,
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mmap_regions,
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)?;
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// Add virtio-pmem if required
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DeviceManager::add_virtio_pmem_devices(
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vm_info,
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allocator,
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pci,
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buses,
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&interrupt_info,
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&mut mem_slots,
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mmap_regions,
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)?;
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// Add virtio-vhost-user-net if required
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DeviceManager::add_virtio_vhost_user_net_devices(
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vm_info,
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allocator,
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pci,
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buses,
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&interrupt_info,
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)?;
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// Add virtio-vsock if required
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DeviceManager::add_virtio_vsock_devices(vm_info, allocator, pci, buses, &interrupt_info)?;
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Ok(())
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}
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fn add_virtio_block_devices(
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vm_info: &VmInfo,
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allocator: &mut SystemAllocator,
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pci: &mut PciConfigIo,
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buses: &mut BusInfo,
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interrupt_info: &InterruptInfo,
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) -> DeviceManagerResult<()> {
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if let Some(disk_list_cfg) = &vm_info.vm_cfg.disks {
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for disk_cfg in disk_list_cfg.iter() {
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// Open block device path
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let raw_img: File = OpenOptions::new()
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.read(true)
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.write(true)
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.open(disk_cfg.path)
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.map_err(DeviceManagerError::Disk)?;
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let image_type = qcow::detect_image_type(&raw_img)
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.map_err(DeviceManagerError::DetectImageType)?;
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let block = match image_type {
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ImageType::Raw => {
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let raw_img = vm_virtio::RawFile::new(raw_img);
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let dev =
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vm_virtio::Block::new(raw_img, disk_cfg.path.to_path_buf(), false)
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.map_err(DeviceManagerError::CreateVirtioBlock)?;
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Box::new(dev) as Box<dyn vm_virtio::VirtioDevice>
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}
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ImageType::Qcow2 => {
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let qcow_img = QcowFile::from(raw_img)
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.map_err(DeviceManagerError::QcowDeviceCreate)?;
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let dev =
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vm_virtio::Block::new(qcow_img, disk_cfg.path.to_path_buf(), false)
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.map_err(DeviceManagerError::CreateVirtioBlock)?;
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Box::new(dev) as Box<dyn vm_virtio::VirtioDevice>
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}
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};
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DeviceManager::add_virtio_pci_device(
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block,
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vm_info.memory,
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allocator,
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vm_info.vm_fd,
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pci,
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buses,
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&interrupt_info,
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)?;
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}
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}
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Ok(())
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}
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|
|
fn add_virtio_net_devices(
|
|
vm_info: &VmInfo,
|
|
allocator: &mut SystemAllocator,
|
|
pci: &mut PciConfigIo,
|
|
buses: &mut BusInfo,
|
|
interrupt_info: &InterruptInfo,
|
|
) -> DeviceManagerResult<()> {
|
|
// Add virtio-net if required
|
|
if let Some(net_list_cfg) = &vm_info.vm_cfg.net {
|
|
for net_cfg in net_list_cfg.iter() {
|
|
let virtio_net_device: vm_virtio::Net;
|
|
|
|
if let Some(tap_if_name) = net_cfg.tap {
|
|
let tap = Tap::open_named(tap_if_name).map_err(DeviceManagerError::OpenTap)?;
|
|
virtio_net_device = vm_virtio::Net::new_with_tap(tap, Some(&net_cfg.mac))
|
|
.map_err(DeviceManagerError::CreateVirtioNet)?;
|
|
} else {
|
|
virtio_net_device =
|
|
vm_virtio::Net::new(net_cfg.ip, net_cfg.mask, Some(&net_cfg.mac))
|
|
.map_err(DeviceManagerError::CreateVirtioNet)?;
|
|
}
|
|
|
|
DeviceManager::add_virtio_pci_device(
|
|
Box::new(virtio_net_device),
|
|
vm_info.memory,
|
|
allocator,
|
|
vm_info.vm_fd,
|
|
pci,
|
|
buses,
|
|
&interrupt_info,
|
|
)?;
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn add_virtio_rng_devices(
|
|
vm_info: &VmInfo,
|
|
allocator: &mut SystemAllocator,
|
|
pci: &mut PciConfigIo,
|
|
buses: &mut BusInfo,
|
|
interrupt_info: &InterruptInfo,
|
|
) -> DeviceManagerResult<()> {
|
|
// Add virtio-rng if required
|
|
if let Some(rng_path) = vm_info.vm_cfg.rng.src.to_str() {
|
|
let virtio_rng_device =
|
|
vm_virtio::Rng::new(rng_path).map_err(DeviceManagerError::CreateVirtioRng)?;
|
|
|
|
DeviceManager::add_virtio_pci_device(
|
|
Box::new(virtio_rng_device),
|
|
vm_info.memory,
|
|
allocator,
|
|
vm_info.vm_fd,
|
|
pci,
|
|
buses,
|
|
&interrupt_info,
|
|
)?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn add_virtio_fs_devices(
|
|
vm_info: &VmInfo,
|
|
allocator: &mut SystemAllocator,
|
|
pci: &mut PciConfigIo,
|
|
buses: &mut BusInfo,
|
|
interrupt_info: &InterruptInfo,
|
|
mem_slots: &mut u32,
|
|
mmap_regions: &mut Vec<(*mut libc::c_void, usize)>,
|
|
) -> DeviceManagerResult<()> {
|
|
// Add virtio-fs if required
|
|
if let Some(fs_list_cfg) = &vm_info.vm_cfg.fs {
|
|
for fs_cfg in fs_list_cfg.iter() {
|
|
if let Some(fs_sock) = fs_cfg.sock.to_str() {
|
|
let mut cache: Option<(VirtioSharedMemoryList, u64)> = None;
|
|
if let Some(fs_cache) = fs_cfg.cache_size {
|
|
// The memory needs to be 2MiB aligned in order to support
|
|
// hugepages.
|
|
let fs_guest_addr = allocator
|
|
.allocate_mmio_addresses(
|
|
None,
|
|
fs_cache as GuestUsize,
|
|
Some(0x0020_0000),
|
|
)
|
|
.ok_or(DeviceManagerError::FsRangeAllocation)?;
|
|
|
|
let addr = unsafe {
|
|
libc::mmap(
|
|
null_mut(),
|
|
fs_cache as usize,
|
|
libc::PROT_READ | libc::PROT_WRITE,
|
|
libc::MAP_NORESERVE | libc::MAP_ANONYMOUS | libc::MAP_PRIVATE,
|
|
-1,
|
|
0 as libc::off_t,
|
|
)
|
|
};
|
|
if addr == libc::MAP_FAILED {
|
|
return Err(DeviceManagerError::Mmap(io::Error::last_os_error()));
|
|
}
|
|
|
|
mmap_regions.push((addr, fs_cache as usize));
|
|
|
|
let mem_region = kvm_userspace_memory_region {
|
|
slot: *mem_slots as u32,
|
|
guest_phys_addr: fs_guest_addr.raw_value(),
|
|
memory_size: fs_cache,
|
|
userspace_addr: addr as u64,
|
|
flags: 0,
|
|
};
|
|
// Safe because the guest regions are guaranteed not to overlap.
|
|
let _ = unsafe { vm_info.vm_fd.set_user_memory_region(mem_region) };
|
|
|
|
// Increment the KVM slot number
|
|
*mem_slots += 1;
|
|
|
|
let mut region_list = Vec::new();
|
|
region_list.push(VirtioSharedMemory {
|
|
offset: 0,
|
|
len: fs_cache,
|
|
});
|
|
cache = Some((
|
|
VirtioSharedMemoryList {
|
|
addr: fs_guest_addr,
|
|
len: fs_cache as GuestUsize,
|
|
region_list,
|
|
},
|
|
addr as u64,
|
|
));
|
|
}
|
|
|
|
let virtio_fs_device = vm_virtio::vhost_user::Fs::new(
|
|
fs_sock,
|
|
fs_cfg.tag,
|
|
fs_cfg.num_queues,
|
|
fs_cfg.queue_size,
|
|
cache,
|
|
)
|
|
.map_err(DeviceManagerError::CreateVirtioFs)?;
|
|
|
|
DeviceManager::add_virtio_pci_device(
|
|
Box::new(virtio_fs_device),
|
|
vm_info.memory,
|
|
allocator,
|
|
vm_info.vm_fd,
|
|
pci,
|
|
buses,
|
|
&interrupt_info,
|
|
)?;
|
|
}
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn add_virtio_pmem_devices(
|
|
vm_info: &VmInfo,
|
|
allocator: &mut SystemAllocator,
|
|
pci: &mut PciConfigIo,
|
|
buses: &mut BusInfo,
|
|
interrupt_info: &InterruptInfo,
|
|
mem_slots: &mut u32,
|
|
mmap_regions: &mut Vec<(*mut libc::c_void, usize)>,
|
|
) -> DeviceManagerResult<()> {
|
|
// Add virtio-pmem if required
|
|
if let Some(pmem_list_cfg) = &vm_info.vm_cfg.pmem {
|
|
for pmem_cfg in pmem_list_cfg.iter() {
|
|
let size = pmem_cfg.size;
|
|
|
|
// The memory needs to be 2MiB aligned in order to support
|
|
// hugepages.
|
|
let pmem_guest_addr = allocator
|
|
.allocate_mmio_addresses(None, size as GuestUsize, Some(0x0020_0000))
|
|
.ok_or(DeviceManagerError::PmemRangeAllocation)?;
|
|
|
|
let (custom_flags, set_len) = if pmem_cfg.file.is_dir() {
|
|
(O_TMPFILE, true)
|
|
} else {
|
|
(0, false)
|
|
};
|
|
|
|
let file = OpenOptions::new()
|
|
.read(true)
|
|
.write(true)
|
|
.custom_flags(custom_flags)
|
|
.open(pmem_cfg.file)
|
|
.map_err(DeviceManagerError::PmemFileOpen)?;
|
|
|
|
if set_len {
|
|
file.set_len(size)
|
|
.map_err(DeviceManagerError::PmemFileSetLen)?;
|
|
}
|
|
|
|
let addr = unsafe {
|
|
libc::mmap(
|
|
null_mut(),
|
|
size as usize,
|
|
libc::PROT_READ | libc::PROT_WRITE,
|
|
libc::MAP_NORESERVE | libc::MAP_SHARED,
|
|
file.as_raw_fd(),
|
|
0 as libc::off_t,
|
|
)
|
|
};
|
|
|
|
mmap_regions.push((addr, size as usize));
|
|
|
|
let mem_region = kvm_userspace_memory_region {
|
|
slot: *mem_slots as u32,
|
|
guest_phys_addr: pmem_guest_addr.raw_value(),
|
|
memory_size: size,
|
|
userspace_addr: addr as u64,
|
|
flags: 0,
|
|
};
|
|
// Safe because the guest regions are guaranteed not to overlap.
|
|
let _ = unsafe { vm_info.vm_fd.set_user_memory_region(mem_region) };
|
|
|
|
// Increment the KVM slot number
|
|
*mem_slots += 1;
|
|
|
|
let virtio_pmem_device =
|
|
vm_virtio::Pmem::new(file, pmem_guest_addr, size as GuestUsize)
|
|
.map_err(DeviceManagerError::CreateVirtioPmem)?;
|
|
|
|
DeviceManager::add_virtio_pci_device(
|
|
Box::new(virtio_pmem_device),
|
|
vm_info.memory,
|
|
allocator,
|
|
vm_info.vm_fd,
|
|
pci,
|
|
buses,
|
|
&interrupt_info,
|
|
)?;
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn add_virtio_vhost_user_net_devices(
|
|
vm_info: &VmInfo,
|
|
allocator: &mut SystemAllocator,
|
|
pci: &mut PciConfigIo,
|
|
buses: &mut BusInfo,
|
|
interrupt_info: &InterruptInfo,
|
|
) -> DeviceManagerResult<()> {
|
|
// Add vhost-user-net if required
|
|
if let Some(vhost_user_net_list_cfg) = &vm_info.vm_cfg.vhost_user_net {
|
|
for vhost_user_net_cfg in vhost_user_net_list_cfg.iter() {
|
|
let vhost_user_net_device = vm_virtio::vhost_user::Net::new(
|
|
vhost_user_net_cfg.mac,
|
|
vhost_user_net_cfg.vu_cfg,
|
|
)
|
|
.map_err(DeviceManagerError::CreateVhostUserNet)?;
|
|
|
|
DeviceManager::add_virtio_pci_device(
|
|
Box::new(vhost_user_net_device),
|
|
vm_info.memory,
|
|
allocator,
|
|
vm_info.vm_fd,
|
|
pci,
|
|
buses,
|
|
&interrupt_info,
|
|
)?;
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn add_virtio_vsock_devices(
|
|
vm_info: &VmInfo,
|
|
allocator: &mut SystemAllocator,
|
|
pci: &mut PciConfigIo,
|
|
buses: &mut BusInfo,
|
|
interrupt_info: &InterruptInfo,
|
|
) -> DeviceManagerResult<()> {
|
|
// Add vsock if required
|
|
if let Some(vsock_list_cfg) = &vm_info.vm_cfg.vsock {
|
|
for vsock_cfg in vsock_list_cfg.iter() {
|
|
let socket_path = vsock_cfg
|
|
.sock
|
|
.to_str()
|
|
.ok_or(DeviceManagerError::CreateVsockConvertPath)?;
|
|
let backend =
|
|
vm_virtio::vsock::VsockUnixBackend::new(vsock_cfg.cid, socket_path.to_string())
|
|
.map_err(DeviceManagerError::CreateVsockBackend)?;
|
|
|
|
let vsock_device = vm_virtio::Vsock::new(vsock_cfg.cid, backend)
|
|
.map_err(DeviceManagerError::CreateVirtioVsock)?;
|
|
|
|
DeviceManager::add_virtio_pci_device(
|
|
Box::new(vsock_device),
|
|
vm_info.memory,
|
|
allocator,
|
|
vm_info.vm_fd,
|
|
pci,
|
|
buses,
|
|
&interrupt_info,
|
|
)?;
|
|
}
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn create_kvm_device(vm: &Arc<VmFd>) -> DeviceManagerResult<DeviceFd> {
|
|
let mut vfio_dev = kvm_bindings::kvm_create_device {
|
|
type_: kvm_bindings::kvm_device_type_KVM_DEV_TYPE_VFIO,
|
|
fd: 0,
|
|
flags: 0,
|
|
};
|
|
|
|
vm.create_device(&mut vfio_dev)
|
|
.map_err(DeviceManagerError::CreateKvmDevice)
|
|
}
|
|
|
|
fn add_vfio_devices(
|
|
vm_info: &VmInfo,
|
|
allocator: &mut SystemAllocator,
|
|
pci: &mut PciConfigIo,
|
|
buses: &mut BusInfo,
|
|
mem_slots: u32,
|
|
) -> DeviceManagerResult<()> {
|
|
let mut mem_slot = mem_slots;
|
|
if let Some(device_list_cfg) = &vm_info.vm_cfg.devices {
|
|
// Create the KVM VFIO device
|
|
let device_fd = DeviceManager::create_kvm_device(vm_info.vm_fd)?;
|
|
let device_fd = Arc::new(device_fd);
|
|
|
|
for device_cfg in device_list_cfg.iter() {
|
|
let vfio_device =
|
|
VfioDevice::new(device_cfg.path, device_fd.clone(), vm_info.memory.clone())
|
|
.map_err(DeviceManagerError::VfioCreate)?;
|
|
|
|
let mut vfio_pci_device = VfioPciDevice::new(vm_info.vm_fd, allocator, vfio_device)
|
|
.map_err(DeviceManagerError::VfioPciCreate)?;
|
|
|
|
let bars = vfio_pci_device
|
|
.allocate_bars(allocator)
|
|
.map_err(DeviceManagerError::AllocateBars)?;
|
|
|
|
mem_slot = vfio_pci_device
|
|
.map_mmio_regions(vm_info.vm_fd, mem_slot)
|
|
.map_err(DeviceManagerError::VfioMapRegion)?;
|
|
|
|
let vfio_pci_device = Arc::new(Mutex::new(vfio_pci_device));
|
|
|
|
pci.add_device(vfio_pci_device.clone())
|
|
.map_err(DeviceManagerError::AddPciDevice)?;
|
|
|
|
pci.register_mapping(vfio_pci_device.clone(), buses.io, buses.mmio, bars)
|
|
.map_err(DeviceManagerError::AddPciDevice)?;
|
|
}
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
fn add_virtio_pci_device(
|
|
virtio_device: Box<dyn vm_virtio::VirtioDevice>,
|
|
memory: &Arc<RwLock<GuestMemoryMmap>>,
|
|
allocator: &mut SystemAllocator,
|
|
vm_fd: &Arc<VmFd>,
|
|
pci: &mut PciConfigIo,
|
|
buses: &mut BusInfo,
|
|
interrupt_info: &InterruptInfo,
|
|
) -> DeviceManagerResult<()> {
|
|
let msix_num = if interrupt_info.msi_capable {
|
|
// Allows support for one MSI-X vector per queue. It also adds 1
|
|
// as we need to take into account the dedicated vector to notify
|
|
// about a virtio config change.
|
|
(virtio_device.queue_max_sizes().len() + 1) as u16
|
|
} else {
|
|
0
|
|
};
|
|
|
|
let mut virtio_pci_device = VirtioPciDevice::new(memory.clone(), virtio_device, msix_num)
|
|
.map_err(DeviceManagerError::VirtioDevice)?;
|
|
|
|
let bars = virtio_pci_device
|
|
.allocate_bars(allocator)
|
|
.map_err(DeviceManagerError::AllocateBars)?;
|
|
|
|
for (event, addr, _) in virtio_pci_device.ioeventfds() {
|
|
let io_addr = IoEventAddress::Mmio(addr);
|
|
vm_fd
|
|
.register_ioevent(event.as_raw_fd(), &io_addr, NoDatamatch)
|
|
.map_err(DeviceManagerError::RegisterIoevent)?;
|
|
}
|
|
|
|
if interrupt_info.msi_capable {
|
|
let vm_fd_clone = vm_fd.clone();
|
|
|
|
let msi_cb = Arc::new(Box::new(move |p: InterruptParameters| {
|
|
if let Some(entry) = p.msix {
|
|
let msi_queue = kvm_msi {
|
|
address_lo: entry.msg_addr_lo,
|
|
address_hi: entry.msg_addr_hi,
|
|
data: entry.msg_data,
|
|
flags: 0u32,
|
|
devid: 0u32,
|
|
pad: [0u8; 12],
|
|
};
|
|
|
|
return vm_fd_clone.signal_msi(msi_queue).map(|ret| {
|
|
if ret > 0 {
|
|
debug!("MSI message successfully delivered");
|
|
} else if ret == 0 {
|
|
warn!("failed to deliver MSI message, blocked by guest");
|
|
}
|
|
});
|
|
}
|
|
|
|
Err(std::io::Error::new(
|
|
std::io::ErrorKind::Other,
|
|
"missing MSI-X entry",
|
|
))
|
|
}) as InterruptDelivery);
|
|
|
|
virtio_pci_device.assign_msix(msi_cb);
|
|
} else {
|
|
let irq_num = allocator
|
|
.allocate_irq()
|
|
.ok_or(DeviceManagerError::AllocateIrq)?;
|
|
|
|
let irq_cb = if let Some(ioapic) = interrupt_info.ioapic {
|
|
let ioapic_clone = ioapic.clone();
|
|
Box::new(move |_p: InterruptParameters| {
|
|
ioapic_clone
|
|
.lock()
|
|
.unwrap()
|
|
.service_irq(irq_num as usize)
|
|
.map_err(|e| {
|
|
std::io::Error::new(
|
|
std::io::ErrorKind::Other,
|
|
format!("failed to inject IRQ #{}: {:?}", irq_num, e),
|
|
)
|
|
})
|
|
}) as InterruptDelivery
|
|
} else {
|
|
let irqfd = EventFd::new(EFD_NONBLOCK).map_err(DeviceManagerError::EventFd)?;
|
|
vm_fd
|
|
.register_irqfd(irqfd.as_raw_fd(), irq_num)
|
|
.map_err(DeviceManagerError::Irq)?;
|
|
|
|
Box::new(move |_p: InterruptParameters| irqfd.write(1)) as InterruptDelivery
|
|
};
|
|
|
|
virtio_pci_device.assign_pin_irq(
|
|
Arc::new(irq_cb),
|
|
irq_num as u32,
|
|
PciInterruptPin::IntA,
|
|
);
|
|
}
|
|
|
|
let virtio_pci_device = Arc::new(Mutex::new(virtio_pci_device));
|
|
|
|
pci.add_device(virtio_pci_device.clone())
|
|
.map_err(DeviceManagerError::AddPciDevice)?;
|
|
|
|
pci.register_mapping(
|
|
virtio_pci_device.clone(),
|
|
&mut buses.io,
|
|
&mut buses.mmio,
|
|
bars,
|
|
)
|
|
.map_err(DeviceManagerError::AddPciDevice)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
pub fn register_devices(&mut self) -> DeviceManagerResult<()> {
|
|
if self.console.serial.is_some() {
|
|
// Insert serial device
|
|
self.io_bus
|
|
.insert(self.console.serial.as_ref().unwrap().clone(), 0x3f8, 0x8)
|
|
.map_err(DeviceManagerError::BusError)?;
|
|
}
|
|
|
|
// Insert i8042 device
|
|
self.io_bus
|
|
.insert(self.i8042.clone(), 0x61, 0x4)
|
|
.map_err(DeviceManagerError::BusError)?;
|
|
|
|
#[cfg(feature = "acpi")]
|
|
self.io_bus
|
|
.insert(self.acpi_device.clone(), 0x3c0, 0x4)
|
|
.map_err(DeviceManagerError::BusError)?;
|
|
|
|
// Insert the PCI root configuration space.
|
|
self.io_bus
|
|
.insert(self.pci.clone(), 0xcf8, 0x8)
|
|
.map_err(DeviceManagerError::BusError)?;
|
|
|
|
if let Some(ioapic) = &self.ioapic {
|
|
// Insert IOAPIC
|
|
self.mmio_bus
|
|
.insert(ioapic.clone(), IOAPIC_RANGE_ADDR, IOAPIC_RANGE_SIZE)
|
|
.map_err(DeviceManagerError::BusError)?;
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
pub fn io_bus(&self) -> &devices::Bus {
|
|
&self.io_bus
|
|
}
|
|
|
|
pub fn mmio_bus(&self) -> &devices::Bus {
|
|
&self.mmio_bus
|
|
}
|
|
|
|
pub fn ioapic(&self) -> &Option<Arc<Mutex<ioapic::Ioapic>>> {
|
|
&self.ioapic
|
|
}
|
|
|
|
pub fn console(&self) -> &Arc<Console> {
|
|
&self.console
|
|
}
|
|
}
|
|
|
|
impl Drop for DeviceManager {
|
|
fn drop(&mut self) {
|
|
for (addr, size) in self.mmap_regions.drain(..) {
|
|
unsafe {
|
|
libc::munmap(addr, size);
|
|
}
|
|
}
|
|
}
|
|
}
|