mirror of
https://chromium.googlesource.com/crosvm/crosvm
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4fea399df9
crosvm is switching the import style to use one import per line. While more verbose, this will greatly reduce the occurence of merge conflicts going forward. Note: This is using a nightly feature of rustfmt. So it's a one-off re-format only. We are considering adding a nightly toolchain to enable the feature permanently. BUG=b:239937122 TEST=CQ Change-Id: Id2dd4dbdc0adfc4f8f3dd1d09da1daafa2a39992 Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3784345 Reviewed-by: Daniel Verkamp <dverkamp@chromium.org> Tested-by: Dennis Kempin <denniskempin@google.com> Commit-Queue: Dennis Kempin <denniskempin@google.com>
77 lines
2.6 KiB
Rust
77 lines
2.6 KiB
Rust
// Copyright 2018 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 file.
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//! Manages system resources that can be allocated to VMs and their devices.
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use remain::sorted;
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use serde::Deserialize;
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use serde::Serialize;
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use thiserror::Error;
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pub use crate::address_range::AddressRange;
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pub use crate::system_allocator::MmioType;
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pub use crate::system_allocator::SystemAllocator;
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pub use crate::system_allocator::SystemAllocatorConfig;
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pub mod address_allocator;
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mod address_range;
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mod system_allocator;
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/// Used to tag SystemAllocator allocations.
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#[derive(Debug, Eq, PartialEq, Hash, Copy, Clone, Serialize, Deserialize)]
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pub enum Alloc {
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/// An anonymous resource allocation.
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/// Should only be instantiated through `SystemAllocator::get_anon_alloc()`.
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/// Avoid using these. Instead, use / create a more descriptive Alloc variant.
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Anon(usize),
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/// A PCI BAR region with associated bus, device, function and bar numbers.
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PciBar { bus: u8, dev: u8, func: u8, bar: u8 },
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/// GPU render node region.
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GpuRenderNode,
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/// Pmem device region with associated device index.
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PmemDevice(usize),
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/// pstore region.
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Pstore,
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/// A PCI bridge window with associated bus, dev, function.
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PciBridgeWindow { bus: u8, dev: u8, func: u8 },
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/// A PCI bridge prefetch window with associated bus, dev, function.
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PciBridgePrefetchWindow { bus: u8, dev: u8, func: u8 },
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/// File-backed memory mapping.
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FileBacked(u64),
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/// virtio vhost user queue with queue id
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VvuQueue(u8),
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}
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#[sorted]
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#[derive(Error, Debug, Eq, PartialEq)]
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pub enum Error {
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#[error("Allocation cannot have size of 0")]
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AllocSizeZero,
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#[error("Pool alignment must be a power of 2")]
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BadAlignment,
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#[error("Alloc does not exist: {0:?}")]
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BadAlloc(Alloc),
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#[error("Alloc already exists: {0:?}")]
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ExistingAlloc(Alloc),
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#[error("Invalid Alloc: {0:?}")]
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InvalidAlloc(Alloc),
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#[error("IO port out of range: {0}")]
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IOPortOutOfRange(AddressRange),
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#[error("Platform MMIO address range not specified")]
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MissingPlatformMMIOAddresses,
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#[error("No IO address range specified")]
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NoIoAllocator,
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#[error("Out of bounds")]
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OutOfBounds,
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#[error("Out of space")]
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OutOfSpace,
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#[error("base={base} + size={size} overflows")]
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PoolOverflow { base: u64, size: u64 },
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#[error("Pool cannot have size of 0")]
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PoolSizeZero,
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#[error("Overlapping region {0}")]
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RegionOverlap(AddressRange),
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}
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pub type Result<T> = std::result::Result<T, Error>;
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