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Message-Id: <20250318-drm-gem-shmem-v1-3-64b96511a84f@collabora.com>
Date: Tue, 18 Mar 2025 16:22:37 -0300
From: Daniel Almeida <daniel.almeida@...labora.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>,
Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
Björn Roy Baron <bjorn3_gh@...tonmail.com>,
Benno Lossin <benno.lossin@...ton.me>,
Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>,
Trevor Gross <tmgross@...ch.edu>, Sumit Semwal <sumit.semwal@...aro.org>,
Christian König <christian.koenig@....com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
rust-for-linux@...r.kernel.org, linux-media@...r.kernel.org,
linaro-mm-sig@...ts.linaro.org, Danilo Krummrich <dakr@...nel.org>,
Asahi Lina <lina@...hilina.net>,
Daniel Almeida <daniel.almeida@...labora.com>
Subject: [PATCH 3/7] rust: helpers: Add bindings/wrappers for dma_resv_lock
From: Asahi Lina <lina@...hilina.net>
This is just for basic usage in the DRM shmem abstractions for implied
locking, not intended as a full DMA Reservation abstraction yet.
Signed-off-by: Asahi Lina <lina@...hilina.net>
Signed-off-by: Daniel Almeida <daniel.almeida@...labora.com>
---
rust/bindings/bindings_helper.h | 1 +
rust/helpers/dma-resv.c | 13 +++++++++++++
rust/helpers/helpers.c | 1 +
3 files changed, 15 insertions(+)
diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h
index e67fd9c3db2f8fbd9766de4148d8a66942eb1f36..032416a23b31e8fcd4c820016e0ccc6f91af2682 100644
--- a/rust/bindings/bindings_helper.h
+++ b/rust/bindings/bindings_helper.h
@@ -16,6 +16,7 @@
#include <linux/blk_types.h>
#include <linux/blkdev.h>
#include <linux/cred.h>
+#include <linux/dma-resv.h>
#include <linux/device/faux.h>
#include <linux/errname.h>
#include <linux/ethtool.h>
diff --git a/rust/helpers/dma-resv.c b/rust/helpers/dma-resv.c
new file mode 100644
index 0000000000000000000000000000000000000000..05501cb814513b483afd0b7f220230d867863c2f
--- /dev/null
+++ b/rust/helpers/dma-resv.c
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/dma-resv.h>
+
+int rust_helper_dma_resv_lock(struct dma_resv *obj, struct ww_acquire_ctx *ctx)
+{
+ return dma_resv_lock(obj, ctx);
+}
+
+void rust_helper_dma_resv_unlock(struct dma_resv *obj)
+{
+ dma_resv_unlock(obj);
+}
diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c
index 2f2070c15f0952a953b9704a4e82968fb575aaed..be3e6c2ffbe6de02d6830014226fdce9630607ab 100644
--- a/rust/helpers/helpers.c
+++ b/rust/helpers/helpers.c
@@ -13,6 +13,7 @@
#include "build_bug.c"
#include "cred.c"
#include "device.c"
+#include "dma-resv.c"
#include "drm.c"
#include "err.c"
#include "fs.c"
--
2.48.1
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