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dependabot[bot] c31cbfe8e6 build(deps): bump the vhost-device group with 9 updates 
Bumps the vhost-device group with 9 updates:

| Package | From | To |
| --- | --- | --- |
| [thiserror](https://github.com/dtolnay/thiserror) | `1.0.68` | `2.0.3` |
| [libc](https://github.com/rust-lang/libc) | `0.2.161` | `0.2.162` |
| [tempfile](https://github.com/Stebalien/tempfile) | `3.13.0` | `3.14.0` |
| [rstest](https://github.com/la10736/rstest) | `0.19.0` | `0.23.0` |
| [cc](https://github.com/rust-lang/cc-rs) | `1.1.36` | `1.1.37` |
| [fastrand](https://github.com/smol-rs/fastrand) | `2.1.1` | `2.2.0` |
| [rstest_macros](https://github.com/la10736/rstest) | `0.19.0` | `0.23.0` |
| [rustix](https://github.com/bytecodealliance/rustix) | `0.38.39` | `0.38.40` |
| [thiserror-impl](https://github.com/dtolnay/thiserror) | `1.0.68` | `1.0.69` |


Updates `thiserror` from 1.0.68 to 2.0.3
- [Release notes](https://github.com/dtolnay/thiserror/releases)
- [Commits](https://github.com/dtolnay/thiserror/compare/1.0.68...2.0.3)

Updates `libc` from 0.2.161 to 0.2.162
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Changelog](https://github.com/rust-lang/libc/blob/0.2.162/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.161...0.2.162)

Updates `tempfile` from 3.13.0 to 3.14.0
- [Changelog](https://github.com/Stebalien/tempfile/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Stebalien/tempfile/compare/v3.13.0...v3.14.0)

Updates `rstest` from 0.19.0 to 0.23.0
- [Release notes](https://github.com/la10736/rstest/releases)
- [Changelog](https://github.com/la10736/rstest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/la10736/rstest/compare/v0.19.0...v0.23.0)

Updates `cc` from 1.1.36 to 1.1.37
- [Release notes](https://github.com/rust-lang/cc-rs/releases)
- [Changelog](https://github.com/rust-lang/cc-rs/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/cc-rs/compare/cc-v1.1.36...cc-v1.1.37)

Updates `fastrand` from 2.1.1 to 2.2.0
- [Release notes](https://github.com/smol-rs/fastrand/releases)
- [Changelog](https://github.com/smol-rs/fastrand/blob/master/CHANGELOG.md)
- [Commits](https://github.com/smol-rs/fastrand/compare/v2.1.1...v2.2.0)

Updates `rstest_macros` from 0.19.0 to 0.23.0
- [Release notes](https://github.com/la10736/rstest/releases)
- [Changelog](https://github.com/la10736/rstest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/la10736/rstest/compare/v0.19.0...v0.23.0)

Updates `rustix` from 0.38.39 to 0.38.40
- [Release notes](https://github.com/bytecodealliance/rustix/releases)
- [Changelog](https://github.com/bytecodealliance/rustix/blob/main/CHANGELOG.md)
- [Commits](https://github.com/bytecodealliance/rustix/compare/v0.38.39...v0.38.40)

Updates `thiserror-impl` from 1.0.68 to 1.0.69
- [Release notes](https://github.com/dtolnay/thiserror/releases)
- [Commits](https://github.com/dtolnay/thiserror/compare/1.0.68...1.0.69)

---
updated-dependencies:
- dependency-name: thiserror
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: vhost-device
- dependency-name: libc
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: vhost-device
- dependency-name: tempfile
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: vhost-device
- dependency-name: rstest
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: vhost-device
- dependency-name: cc
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: vhost-device
- dependency-name: fastrand
  dependency-type: indirect
  update-type: version-update:semver-minor
  dependency-group: vhost-device
- dependency-name: rstest_macros
  dependency-type: indirect
  update-type: version-update:semver-minor
  dependency-group: vhost-device
- dependency-name: rustix
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: vhost-device
- dependency-name: thiserror-impl
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: vhost-device
...

Signed-off-by: dependabot[bot] <support@github.com>
2024-11-11 10:02:22 +05:30
..
src chore: fix clippy warnings 2024-09-25 10:27:44 +03:00
Cargo.toml build(deps): bump the vhost-device group with 9 updates 2024-11-11 10:02:22 +05:30
CHANGELOG.md chore: standardize changelogs 2024-07-24 19:37:19 +05:30
LICENSE-APACHE Move all crates to workspace root 2023-10-16 12:03:57 +05:30
LICENSE-BSD-3-Clause Move all crates to workspace root 2023-10-16 12:03:57 +05:30
README.md i2c: Support for both bus name and bus number 2024-03-20 16:13:54 +05:30

README.md

vhost-device-i2c - I2C emulation backend daemon

Description

This program is a vhost-user backend that emulates a VirtIO I2C bus. This program takes the layout of the i2c bus and its devices on the host OS and then talks to them via the /dev/i2c-X interface when a request comes from the guest OS for an I2C or SMBUS device.

This program is tested with QEMU's -device vhost-user-i2c-pci but should work with any virtual machine monitor (VMM) that supports vhost-user. See the Examples section below.

Synopsis

vhost-device-i2c [OPTIONS]

Options

.. program:: vhost-device-i2c

.. option:: -h, --help

Print help.

.. option:: -s, --socket-path=PATH

Location of vhost-user Unix domain sockets, this path will be suffixed with 0,1,2..socket_count-1.

.. option:: -c, --socket-count=INT

Number of guests (sockets) to attach to, default set to 1.

.. option:: -l, --device-list=I2C-DEVICES

I2c device list at the host OS can be in two different format, name and number:

  • format by name: <bus-name>:<client_addr>[:<client_addr>],[<bus-name>:<client_addr>[:<client_addr>]]
      Example: --device-list "i915 gmbus dpd:32:21,DPDDC-D:10:23"

Here, bus-name: is adatper's name. e.g. value of /sys/bus/i2c/devices/i2c-0/name. client_addr (decimal): address for client device, 32 == 0x20.

  • format by number: <bus>:<client_addr>[:<client_addr>],[<bus>:<client_addr>[:<client_addr>]]
      Example: --device-list "2:32:21,3:10:23"

Here, bus (decimal): adatper bus number. e.g. 2 for /dev/i2c-2, 3 for /dev/i2c-3. client_addr (decimal): address for client device, 32 == 0x20.

Examples

The daemon should be started first:

::

host# vhost-device-i2c --socket-path=vi2c.sock --socket-count=1 --device-list "i915 gmbus dpd:32"

host# vhost-device-i2c --socket-path=vi2c.sock --socket-count=1 --device-list "0:32"

The QEMU invocation needs to create a chardev socket the device can use to communicate as well as share the guests memory over a memfd.

::

host# qemu-system
-chardev socket,path=vi2c.sock,id=vi2c
-device vhost-user-i2c-pci,chardev=vi2c,id=i2c
-m 4096
-object memory-backend-file,id=mem,size=4G,mem-path=/dev/shm,share=on
-numa node,memdev=mem
...

License

This project is licensed under either of