This patch sereis implements basic generic device / driver Rust abstractions, as well as some basic PCI abstractions. This patch series is sent in the context of [1], and the corresponding patch series [2], which contains some basic DRM Rust abstractions and a stub implementation of the Nova GPU driver. Nova is intended to be developed upstream, starting out with just a stub driver to lift some initial required infrastructure upstream. A more detailed explanation can be found in [1]. Some patches, which implement the generic device / driver Rust abstractions have been sent a couple of weeks ago already [3]. For those patches the following changes have been made since then: - remove RawDevice::name() - remove rust helper for dev_name() and dev_get_drvdata() - use AlwaysRefCounted for struct Device - drop trait RawDevice entirely in favor of AsRef and provide Device::from_raw(), Device::as_raw() and Device::as_ref() instead - implement RevocableGuard - device::Data, remove resources and replace it with a Devres abstraction - implement Devres abstraction for resources As mentioned above, a driver serving as example on how these abstractions are used within a (DRM) driver can be found in [2]. Additionally, the device / driver bits can also be found in [3], all abstractions required for Nova in [4] and Nova in [5]. [1] https://lore.kernel.org/dri-devel/Zfsj0_tb-0-tNrJy@cassiopeiae/T/#u [2] https://lore.kernel.org/dri-devel/20240520172059.181256-1-dakr@xxxxxxxxxx/ [3] https://github.com/Rust-for-Linux/linux/tree/staging/rust-device [4] https://github.com/Rust-for-Linux/linux/tree/staging/dev [5] https://gitlab.freedesktop.org/drm/nova/-/tree/nova-next Danilo Krummrich (2): rust: add abstraction for struct device rust: add devres abstraction FUJITA Tomonori (1): rust: add basic PCI driver abstractions Philipp Stanner (2): rust: add basic abstractions for iomem operations rust: PCI: add BAR request and ioremap Wedson Almeida Filho (6): rust: add driver abstraction rust: add rcu abstraction rust: add revocable mutex rust: add revocable objects rust: add device::Data rust: add `dev_*` print macros. rust/bindings/bindings_helper.h | 1 + rust/helpers.c | 145 ++++++++++ rust/kernel/device.rs | 498 ++++++++++++++++++++++++++++++++ rust/kernel/devres.rs | 151 ++++++++++ rust/kernel/driver.rs | 492 +++++++++++++++++++++++++++++++ rust/kernel/iomem.rs | 135 +++++++++ rust/kernel/lib.rs | 10 +- rust/kernel/pci.rs | 449 ++++++++++++++++++++++++++++ rust/kernel/prelude.rs | 2 + rust/kernel/revocable.rs | 441 ++++++++++++++++++++++++++++ rust/kernel/sync.rs | 3 + rust/kernel/sync/rcu.rs | 52 ++++ rust/kernel/sync/revocable.rs | 148 ++++++++++ rust/macros/module.rs | 2 +- samples/rust/rust_minimal.rs | 2 +- samples/rust/rust_print.rs | 2 +- 16 files changed, 2529 insertions(+), 4 deletions(-) create mode 100644 rust/kernel/device.rs create mode 100644 rust/kernel/devres.rs create mode 100644 rust/kernel/driver.rs create mode 100644 rust/kernel/iomem.rs create mode 100644 rust/kernel/pci.rs create mode 100644 rust/kernel/revocable.rs create mode 100644 rust/kernel/sync/rcu.rs create mode 100644 rust/kernel/sync/revocable.rs base-commit: 97ab3e8eec0ce79d9e265e6c9e4c480492180409 -- 2.45.1
