linux-kernel - [PATCH 00/11] rust: add support for Port io

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Message-ID: <20250509031524.2604087-1-andrewjballance@gmail.com>
Date: Thu,  8 May 2025 22:15:13 -0500
From: Andrew Ballance <andrewjballance@...il.com>
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Subject: [PATCH 00/11] rust: add support for Port io

currently the rust `Io` type maps to the c read{b, w, l, q}/write{b, w, l, q}
functions and have no support for port io.this is a problem for pci::Bar
because the pointer returned by pci_iomap is expected to accessed with
the ioread/iowrite api [0].

this patch series splits the `Io` type into `Io`, `PortIo` and `MMIo`.and,
updates pci::Bar, as suggested in the zulip[1], so that it is generic over
Io and, a user can optionally give a compile time hint about the type of io. 

Link: https://docs.kernel.org/6.11/driver-api/pci/pci.html#c.pci_iomap [0]
Link: https://rust-for-linux.zulipchat.com/#narrow/channel/288089-General/topic/.60IoRaw.60.20and.20.60usize.60/near/514788730 [1]

Andrew Ballance (6):
  rust: io: add new Io type
  rust: io: add from_raw_cookie functions
  rust: pci: make Bar generic over Io
  samples: rust: rust_driver_pci: update to use new bar and io api
  gpu: nova-core: update to use the new bar and io api
  rust: devres: fix doctest

Fiona Behrens (5):
  rust: helpers: io: use macro to generate io accessor functions
  rust: io: Replace Io with MMIo using IoAccess trait
  rust: io: implement Debug for IoRaw and add some doctests
  rust: io: add PortIo
  io: move PIO_OFFSET to linux/io.h

 drivers/gpu/nova-core/driver.rs |   4 +-
 drivers/gpu/nova-core/regs.rs   |   1 +
 include/linux/io.h              |  13 +
 lib/iomap.c                     |  13 -
 rust/helpers/io.c               | 132 +++---
 rust/kernel/devres.rs           |   4 +-
 rust/kernel/io.rs               | 753 +++++++++++++++++++++++++-------
 rust/kernel/pci.rs              |  88 +++-
 samples/rust/rust_driver_pci.rs |   6 +-
 9 files changed, 731 insertions(+), 283 deletions(-)


base-commit: 92a09c47464d040866cf2b4cd052bc60555185fb
-- 
2.49.0