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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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5e9886bba4
In accordance with reuse requirements: - Place each license file in the LICENSES/ directory - Add missing SPDX-License-Identifier to files. - Add .reuse/dep5 to bulk-license files Fixes: #5887 Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
187 lines
4.6 KiB
Rust
187 lines
4.6 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-BSD-3-Clause file.
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//
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// SPDX-License-Identifier: Apache-2.0 AND BSD-3-Clause
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//! Implements pci devices and busses.
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#[macro_use]
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extern crate log;
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mod bus;
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mod configuration;
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mod device;
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mod msi;
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mod msix;
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mod vfio;
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mod vfio_user;
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pub use self::bus::{PciBus, PciConfigIo, PciConfigMmio, PciRoot, PciRootError};
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pub use self::configuration::{
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PciBarConfiguration, PciBarPrefetchable, PciBarRegionType, PciCapability, PciCapabilityId,
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PciClassCode, PciConfiguration, PciExpressCapabilityId, PciHeaderType, PciMassStorageSubclass,
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PciNetworkControllerSubclass, PciProgrammingInterface, PciSerialBusSubClass, PciSubclass,
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PCI_CONFIGURATION_ID,
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};
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pub use self::device::{
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BarReprogrammingParams, DeviceRelocation, Error as PciDeviceError, PciDevice,
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};
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pub use self::msi::{msi_num_enabled_vectors, MsiCap, MsiConfig};
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pub use self::msix::{MsixCap, MsixConfig, MsixTableEntry, MSIX_CONFIG_ID, MSIX_TABLE_ENTRY_SIZE};
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pub use self::vfio::{MmioRegion, VfioDmaMapping, VfioPciDevice, VfioPciError};
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pub use self::vfio_user::{VfioUserDmaMapping, VfioUserPciDevice, VfioUserPciDeviceError};
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use serde::de::Visitor;
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use std::fmt::{self, Display};
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use std::num::ParseIntError;
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use std::str::FromStr;
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/// PCI has four interrupt pins A->D.
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#[derive(Copy, Clone)]
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pub enum PciInterruptPin {
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IntA,
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IntB,
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IntC,
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IntD,
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}
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impl PciInterruptPin {
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pub fn to_mask(self) -> u32 {
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self as u32
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}
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}
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#[cfg(target_arch = "x86_64")]
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pub const PCI_CONFIG_IO_PORT: u64 = 0xcf8;
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#[cfg(target_arch = "x86_64")]
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pub const PCI_CONFIG_IO_PORT_SIZE: u64 = 0x8;
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#[derive(Clone, Copy, PartialEq, Eq, PartialOrd)]
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pub struct PciBdf(u32);
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struct PciBdfVisitor;
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impl<'de> Visitor<'de> for PciBdfVisitor {
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type Value = PciBdf;
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fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
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formatter.write_str("struct PciBdf")
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}
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fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
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where
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E: serde::de::Error,
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{
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Ok(v.into())
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}
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}
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impl<'de> serde::Deserialize<'de> for PciBdf {
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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
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where
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D: serde::Deserializer<'de>,
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{
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deserializer.deserialize_str(PciBdfVisitor)
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}
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}
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impl serde::Serialize for PciBdf {
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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
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where
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S: serde::Serializer,
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{
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serializer.collect_str(&self.to_string())
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}
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}
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impl PciBdf {
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pub fn segment(&self) -> u16 {
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((self.0 >> 16) & 0xffff) as u16
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}
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pub fn bus(&self) -> u8 {
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((self.0 >> 8) & 0xff) as u8
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}
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pub fn device(&self) -> u8 {
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((self.0 >> 3) & 0x1f) as u8
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}
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pub fn function(&self) -> u8 {
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(self.0 & 0x7) as u8
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}
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pub fn new(segment: u16, bus: u8, device: u8, function: u8) -> Self {
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Self(
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(segment as u32) << 16
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| (bus as u32) << 8
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| ((device & 0x1f) as u32) << 3
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| (function & 0x7) as u32,
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)
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}
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}
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impl From<u32> for PciBdf {
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fn from(bdf: u32) -> Self {
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Self(bdf)
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}
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}
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impl From<PciBdf> for u32 {
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fn from(bdf: PciBdf) -> Self {
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bdf.0
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}
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}
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impl From<&PciBdf> for u32 {
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fn from(bdf: &PciBdf) -> Self {
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bdf.0
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}
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}
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impl From<PciBdf> for u16 {
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fn from(bdf: PciBdf) -> Self {
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(bdf.0 & 0xffff) as u16
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}
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}
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impl From<&PciBdf> for u16 {
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fn from(bdf: &PciBdf) -> Self {
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(bdf.0 & 0xffff) as u16
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}
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}
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impl Display for PciBdf {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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write!(
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f,
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"{:04x}:{:02x}:{:02x}.{:01x}",
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self.segment(),
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self.bus(),
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self.device(),
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self.function()
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)
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}
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}
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impl FromStr for PciBdf {
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type Err = ParseIntError;
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fn from_str(s: &str) -> Result<Self, Self::Err> {
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let items: Vec<&str> = s.split('.').collect();
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assert_eq!(items.len(), 2);
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let function = u8::from_str_radix(items[1], 16)?;
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let items: Vec<&str> = items[0].split(':').collect();
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assert_eq!(items.len(), 3);
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let segment = u16::from_str_radix(items[0], 16)?;
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let bus = u8::from_str_radix(items[1], 16)?;
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let device = u8::from_str_radix(items[2], 16)?;
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Ok(PciBdf::new(segment, bus, device, function))
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}
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}
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impl From<&str> for PciBdf {
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fn from(bdf: &str) -> Self {
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Self::from_str(bdf).unwrap()
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}
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}
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