From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-43172.protonmail.ch (mail-43172.protonmail.ch [185.70.43.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 43504377A82 for ; Wed, 19 Aug 2026 18:46:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.70.43.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787165213; cv=none; b=M8fiLSDN03mE/NUpExAMBigG737VhAPe4HAi+xUqxZxYa7IDMiqRftXCI38rgGzwTNUUnumgYwIwopvoKchEzFgHh/pvF+EqS1qt44MMzoqVNsNBLHjc5wn7SeC5Cjsm1m1kItph/L8oge6fO17DQ6moqTSLLmPO6mUh/vg1kTA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787165213; c=relaxed/simple; bh=lqS66zZQa7BN2FFtjvnO0NUx9o7uFkJGZPTMpOP+p0A=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Ekj/XD7eqtRqG7G8TWtgf2C2klbMxGPbEsjoeB6bMnB4ot9irJTaTe7/JeW8cTvqsjIydNG4JvYDeYu0cIEw2l6Yht2qcspI5493FjGlCPXtffPC5VP2URh3VcgLWve1q6H5NBWG5kOsJoBCLBGx/jen64ZgeHU/VDdMwFuPTYw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=onurozkan.dev; spf=pass smtp.mailfrom=onurozkan.dev; dkim=pass (2048-bit key) header.d=onurozkan.dev header.i=@onurozkan.dev header.b=bo62kqXa; arc=none smtp.client-ip=185.70.43.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=onurozkan.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=onurozkan.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=onurozkan.dev header.i=@onurozkan.dev header.b="bo62kqXa" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=onurozkan.dev; s=protonmail; t=1787165206; x=1787424406; bh=CZyq4+sjUzGKI8A2ogOec7/Sr2Kg8h1cVESqQ7/8ALQ=; h=From:To:Cc:Subject:Date:Message-ID:From:To:Cc:Date:Subject: Reply-To:Feedback-ID:Message-ID:BIMI-Selector; b=bo62kqXas7WuNIqfSMi55USfWLxTps0d5Qkb/Si0xo5mTk1rgrsbqdprSAveh1QQO ejtT4eBEoXLrlXNO1XT+OtXyi2HVEtz14qpKzEqk30kMpiTqDHJXZMgH/dNItpGrV5 aIMBw+jZmSkHIGutM64hsTd9XlVqoXkUaIiQw2/uALV/yh9M+Ck1A/AQoYuakb1fyr Prayo92Xp0ESxAQPgYdz8OozozXPriBTuiJPmuoJ+QNMXQw0HzZsSRyIdsujEtPnBl PheMQimAoJSWi0uxqPU2t+bHwV63OVY8d2DzXtsR3CZNGNf+RN4PT1NW/uRNDYLZ5B UF8k8fisRUTJQ== X-Pm-Submission-Id: 4hQFsc09TPz1DDLj From: =?UTF-8?q?Onur=20=C3=96zkan?= To: linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: dakr@kernel.org, aliceryhl@google.com, daniel.almeida@collabora.com, airlied@gmail.com, simona@ffwll.ch, ojeda@kernel.org, boqun@kernel.org, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, tmgross@umich.edu, =?UTF-8?q?Onur=20=C3=96zkan?= Subject: [PATCH v6 0/3] drm/tyr: GPU reset infrastructure Date: Wed, 19 Aug 2026 21:45:38 +0300 Message-ID: <20260819-tyr-reset-impl-v6-0-7b4e1e041fe5@onurozkan.dev> X-Mailer: git-send-email 2.51.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Change-ID: 20260813-tyr-reset-impl-93e951f996b4 Content-Transfer-Encoding: 8bit Add support for scheduling GPU resets on a dedicated workqueue. Track the reset state to avoid queueing another reset while one is already pending or in progress. Use an SRCU based gate with mutex-protected reader admission to block hardware accesses while reset work runs and wait for current users before resetting. Stop new reset requests during teardown and drain any queued or running reset work before releasing the device resources. This is the initial reset infrastructure only. It is not wired to a reset source yet as those will follow in separate work. Based on 'commit 53441a9cae3c ("drm/tyr: program CSF global interface")' from tyr-for-upstream with the following patch series on the ML: - rust: add SRCU abstraction [1] - rust: workqueue: add cancel_sync support [2] TODOs: - On reset failure, we don't do anything for now. We should unplug the GPU. - In schedule(), similar to panthor_device_schedule_reset(), we should have a PM check but similar to the note above, we don't have the infrastructure for that yet. Changes since v5: - Use ScopedWork instead of a separately allocated Controller and its open-coded cancellation. - Rename reset-internal lifetimes. - use dev_dbg!() instead of dev_info!(). - Use Danilo's workqueue series [2] which already includes OwnedQueue Send + Sync, ScopedQueue and ScopedWork. Link: https://lore.kernel.org/all/20260613065348.96750-1-work@onurozkan.dev [1] Link: https://lore.kernel.org/all/20260807165252.3849875-1-dakr@kernel.org [2] Link: https://lore.kernel.org/all/20260708114358.957305-1-work@onurozkan.dev Link: https://gitlab.freedesktop.org/panfrost/linux/-/issues/28 Signed-off-by: Onur Özkan --- Onur Özkan (3): drm/tyr: clear stale IRQ state before soft reset drm/tyr: add GPU reset infrastructure drm/tyr: put iomem behind the hardware gate drivers/gpu/drm/tyr/driver.rs | 65 ++++----- drivers/gpu/drm/tyr/fw.rs | 16 +- drivers/gpu/drm/tyr/mmu.rs | 9 +- drivers/gpu/drm/tyr/mmu/address_space.rs | 49 +++---- drivers/gpu/drm/tyr/reset.rs | 242 +++++++++++++++++++++++++++++++ drivers/gpu/drm/tyr/reset/hw_gate.rs | 102 +++++++++++++ drivers/gpu/drm/tyr/tyr.rs | 1 + 7 files changed, 406 insertions(+), 78 deletions(-) --- base-commit: 53441a9cae3c4be552fa8aefa6e61b0f1bceb8a5 change-id: 20260813-tyr-reset-impl-93e951f996b4 prerequisite-message-id: <20260807165252.3849875-1-dakr@kernel.org> prerequisite-patch-id: 4275f7d6e3cf96d61221d47f2398ebfb896db0c7 prerequisite-patch-id: f5e24f7b3717f2ab0445b5395c7f12b554861d78 prerequisite-patch-id: 0bf6ae4abcef7090d0e48921d6ec627a59dc6a7a prerequisite-patch-id: 8dc24064e858240a6bb5411a261a987a7eae3fad prerequisite-patch-id: eefbd4a72ed6da0083e20811882738cc3b05604f prerequisite-patch-id: 7502236d334b13c547a8b47f0be9bf7171b5ca6b prerequisite-message-id: <20260613065348.96750-1-work@onurozkan.dev> prerequisite-patch-id: 9e1efee190d212ba1b01cd0acb5a4357e0b4da42 prerequisite-patch-id: 26aba035f4d1e212fa6ea7078095febefff5c5ba prerequisite-patch-id: ffa25d5aadec4c04589af2bdd59a9c022f0fc9b0 prerequisite-patch-id: c2e05a4ac9d665d331952b291a622df6be673e41 prerequisite-patch-id: c14a4bd8a68b045356d61f7fa94690bd037ad08b --