linux-kernel - [PATCH 7/9] rust: pci: move iomap

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Message-ID: <20250331202805.338468-8-dakr@kernel.org>
Date: Mon, 31 Mar 2025 22:28:00 +0200
From: Danilo Krummrich <dakr@...nel.org>
To: bhelgaas@...gle.com,
	gregkh@...uxfoundation.org,
	rafael@...nel.org,
	abdiel.janulgue@...il.com
Cc: ojeda@...nel.org,
	alex.gaynor@...il.com,
	boqun.feng@...il.com,
	gary@...yguo.net,
	bjorn3_gh@...tonmail.com,
	benno.lossin@...ton.me,
	a.hindborg@...nel.org,
	aliceryhl@...gle.com,
	tmgross@...ch.edu,
	daniel.almeida@...labora.com,
	robin.murphy@....com,
	linux-pci@...r.kernel.org,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Danilo Krummrich <dakr@...nel.org>
Subject: [PATCH 7/9] rust: pci: move iomap_region() to impl Device<Bound>

Require the Bound device context to be able to call iomap_region() and
iomap_region_sized(). Creating I/O mapping requires the device to be
bound.

Signed-off-by: Danilo Krummrich <dakr@...nel.org>
---
 rust/kernel/pci.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/rust/kernel/pci.rs b/rust/kernel/pci.rs
index de140cce13cf..b93bf57d2b54 100644
--- a/rust/kernel/pci.rs
+++ b/rust/kernel/pci.rs
@@ -390,7 +390,9 @@ pub fn resource_len(&self, bar: u32) -> Result<bindings::resource_size_t> {
         // - by its type invariant `self.as_raw` is always a valid pointer to a `struct pci_dev`.
         Ok(unsafe { bindings::pci_resource_len(self.as_raw(), bar.try_into()?) })
     }
+}
 
+impl Device<device::Bound> {
     /// Mapps an entire PCI-BAR after performing a region-request on it. I/O operation bound checks
     /// can be performed on compile time for offsets (plus the requested type size) < SIZE.
     pub fn iomap_region_sized<const SIZE: usize>(
-- 
2.49.0