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[34.125.3.185]) by smtp.gmail.com with UTF8SMTPSA id d2e1a72fcca58-77607b392fcsm16649240b3a.87.2025.09.16.14.08.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Sep 2025 14:08:33 -0700 (PDT) From: Chia-I Wu To: Boris Brezillon , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Grant Likely , Heiko Stuebner , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH 02/10] drm/panthor: rename and document lock_region Date: Tue, 16 Sep 2025 14:08:15 -0700 Message-ID: <20250916210823.4033529-3-olvaffe@gmail.com> X-Mailer: git-send-email 2.51.0.384.g4c02a37b29-goog In-Reply-To: <20250916210823.4033529-1-olvaffe@gmail.com> References: <20250916210823.4033529-1-olvaffe@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Rename lock_region to mmu_hw_cmd_lock. Signed-off-by: Chia-I Wu --- drivers/gpu/drm/panthor/panthor_mmu.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/panthor/panthor_mmu.c b/drivers/gpu/drm/panthor/panthor_mmu.c index d3af4f79012b4..8600d98842345 100644 --- a/drivers/gpu/drm/panthor/panthor_mmu.c +++ b/drivers/gpu/drm/panthor/panthor_mmu.c @@ -545,8 +545,17 @@ static int write_cmd(struct panthor_device *ptdev, u32 as_nr, u32 cmd) return status; } -static void lock_region(struct panthor_device *ptdev, u32 as_nr, - u64 region_start, u64 size) +/** + * mmu_hw_cmd_lock() - Issue a LOCK command + * @ptdev: Device. + * @as_nr: AS to issue command to. + * @region_start: Start of the region. + * @size: Size of the region. + * + * Issue a LOCK command to invalidate MMU caches and block future transactions + * for a region. + */ +static void mmu_hw_cmd_lock(struct panthor_device *ptdev, u32 as_nr, u64 region_start, u64 size) { u8 region_width; u64 region; @@ -609,7 +618,7 @@ static int mmu_hw_do_operation_locked(struct panthor_device *ptdev, int as_nr, * power it up */ - lock_region(ptdev, as_nr, iova, size); + mmu_hw_cmd_lock(ptdev, as_nr, iova, size); ret = mmu_hw_wait_ready(ptdev, as_nr); if (ret) -- 2.51.0.384.g4c02a37b29-goog