mbox series

[v3,0/4] rust: Add ACPI match table support for Rust drivers

Message ID 20250606170341.3880941-1-igor.korotin.linux@gmail.com
Headers show
Series rust: Add ACPI match table support for Rust drivers | expand

Message

Igor Korotin June 6, 2025, 5:03 p.m. UTC 
This patch series introduces support for ACPI match tables in Rust 
drivers.

Currently, Rust abstractions support only Open Firmware (OF) device 
matching. This series extends the driver model to support ACPI-based 
matching, enabling Rust drivers to bind to ACPI-described devices.

Changes include:
  - A new `acpi::DeviceId` abstraction for working with 
   `struct acpi_device_id`.
  - Updates to the core `Adapter` trait and `platform::Driver` to support
    optional ACPI ID tables.
  - A sample implementation in the Rust platform driver, demonstrating 
    multi-bus matching.

This is especially useful for writing drivers that work across platforms 
using both OF and ACPI.

Tested using QEMU with a custom SSDT that creates an ACPI device matching
the sample Rust platform driver.

Igor Korotin (4):
  rust: acpi: add `acpi::DeviceId` abstraction
  rust: driver: Add ACPI id table support to Adapter trait
  rust: platform: Add ACPI match table support to `Driver` trait
  samples: rust: add ACPI match table example to platform driver

Changelog
---------
v3:
 - Removed fwnode type check in `Adapter::id_info` per Greg's and Danilo's
   comments
 - Removed `is_of_node` rust helper, due to unnecessity. 
 - Fixed example code in `rust_driver_platform.rs` per Danilo's comment
 - Added an instruction of testing ACPI using QEMU with a custom SSDT
 - Fixed minor code formatting issues.
 - Link to v2: https://lore.kernel.org/rust-for-linux/20250605161956.3658374-1-igor.korotin.linux@gmail.com/
v2:
 - Removed misleading comment in `acpi::DeviceID` implementation. 
 - Removed unnecessary casting in `acpi::DeviceID::new`.
 - Moved `pub mod acpi` to correct alphabetical position in `rust/kernel/lib.rs`.
 - Link to v1: https://lore.kernel.org/rust-for-linux/20250530123815.1766726-1-igor.korotin.linux@gmail.com/

 MAINTAINERS                          |  1 +
 rust/bindings/bindings_helper.h      |  1 +
 rust/kernel/acpi.rs                  | 61 +++++++++++++++++
 rust/kernel/driver.rs                | 39 ++++++++++-
 rust/kernel/lib.rs                   |  1 +
 rust/kernel/platform.rs              | 18 +++++-
 samples/rust/rust_driver_platform.rs | 97 +++++++++++++++++++++++++++-
 7 files changed, 214 insertions(+), 4 deletions(-)
 create mode 100644 rust/kernel/acpi.rs


base-commit: 9857af0fcff385c75433f2162c30c62eb912ef6d