From nobody Thu Oct 2 13:00:48 2025 Received: from mail-pf1-f181.google.com (mail-pf1-f181.google.com [209.85.210.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5AA7A285406 for ; Tue, 16 Sep 2025 21:08:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.181 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758056915; cv=none; b=LbdUdhys+Y7oRR7oPyDDQLpLAsqJExzz5yDyO+PKGJ2uTeDPpSegNkYRxJSvSzH8WVGVqXdWYZ+ndDtjFKepvvyqKGoJo/sjhshxpuJ6Yta+nr47lmKLsK1iAkth+/D/XM2bVZ2Yz/vbhFoGWNvAbr/RcZSO7l11puOjNFzFpsk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758056915; c=relaxed/simple; bh=DlLhTKO7E6kipPFiDWDrXkdNVJqENLuVKM7fTBvX0cw=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZtStLlH/NL6+UI4Ov/weiV+wwQTA0qcyVLB0KgW36MAa9eHN/V+RF81xJpqxi1ZqtudfL1htaKroL7WcDqouM6pvP5/jECn8wms83WvLfyzaBT2LsdxXF/Qxndn66jDpmrWQSaOivnGJut2MxbW4hjmP39U/sCoKw/rWxnKSkuk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=U9N0xzyf; arc=none smtp.client-ip=209.85.210.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="U9N0xzyf" Received: by mail-pf1-f181.google.com with SMTP id d2e1a72fcca58-77287fb79d3so4555466b3a.1 for ; Tue, 16 Sep 2025 14:08:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1758056913; x=1758661713; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=3aO3jHV+TCdh3X4sNWUTMqSI+YaJsDjuOHp0znGhivY=; b=U9N0xzyfEQUBL8PK1losqd20q4K2VTGX7CBUYDv9hJu7fUwk9ecySeZl6FekaKeBnV xMeQJkMS+TF6874Bbjt0iTUl0yYkEsaX9tZWwiHjyOtCcUlfAVQFpxa2NN9FTm8OjsYz C1MYcfG+GlK0IZNGWHOQOQx+H4CunbkIEAvvWPUkrqXuJHZKCHciBgKVilg23o12G31M pD071wBahvmnJAk5a3Mi189akA/CCorbjIeFXLFk+r2PRVnryyiWIf42tCvC3Gpa3Kbf hDRYS9oPaznL9zaeGH8XwtPL2SjcfCVw2/bzvSbmg9Wmk3RbrVFwFatWuk8btQpHaMMI rBjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758056913; x=1758661713; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3aO3jHV+TCdh3X4sNWUTMqSI+YaJsDjuOHp0znGhivY=; b=XI8TXgmIxsTn3yQm7dMphM/Hok/OdHhaNE4iPlIoKyCijU7HWoTiem6cfajM0cZyo3 moG4oRzD7a2XeU0//UklL7HemmPpihlMfgL5QDuXC18ZZqTyiuGjcZJcNRLUrbJAy85l RUW77qkz7kHM5tmAru9yUzdUQ1Wo/einrtjuGK6CSv32eTa576Q3ytUPNDPN8yTzBIzJ bYmlcfWziHdk0jFS5UOVbF7gaeiPpLGoouGNSvL93TZzYDdKu7UVES0UWheUWBj9LW5h 5IicSwgHNlcLNCYfUSkJoOFCBMMseZGqLRKrow4MvPsl+xYOh5YfmMqSPd6Pd6yN6RJ/ /t4w== X-Forwarded-Encrypted: i=1; AJvYcCUHgcjiBuXpBVVC417gFlFuzQuIFoudkKfG0yuZ9ZWUo8wjMgst5uZmDsR3nYCyObARMRqHWinxKMKs8K4=@vger.kernel.org X-Gm-Message-State: AOJu0YyYZcf/2jF+tkeqDPQsnBBEXUn7nWnz9WbdCCLPzaBb8jBy7M4/ 0dI55/JXXX92wteRxy3jCo9mUVsISelka1XyEpVoWUX2d2ZBF7ziAYlvpkp8/iiE X-Gm-Gg: ASbGncvRiiyLAP/7SOwx2ncq1sa+NSMfxWFs56yhvk9FVB3Osc56OXn7oJhvORAlTVx iNTIDt7z0xwedYI6fjf72R9DTSi1cXA4NEU1y2bunkJi9LcGQt5YmShyZAon1WGFmQWzecs2vlj JgX/qXdfs9htPu4vucM4IAf3HT9qUpAAdeSeRpGxWZksVulXyX+CqCkCjBNwpOOjKt9arMLDEOA WZqbAuLQieEqL8xFLLCShZ8X03ezLXn+6dk44h4DZo/WK0eL5kKXqbxC3LzhR/+b0sw1aYE01ps 197uWOdJp2V7HJ/xOkONi6raYWJGPEekBQz/JR65NnQ6D58PDWUzOTknX5jQProrfDu+nCl1xgI rIXmkKlVu88AjGT3FAObh0avETs5TJ4z/s+VD4dPzwZIFE7vmWdBbIVERWessTAo7m9ppYiZ6cB xGQEuVUd9+ieI0xfoAwapu X-Google-Smtp-Source: AGHT+IErllrXZhiuO08ZvjuaFN67hMPleqZ0DLgAdBUq+kGFJqCmxYGCY5kLycBvM6DB//Dz8cM39w== X-Received: by 2002:a05:6a00:1415:b0:776:1dbf:375b with SMTP id d2e1a72fcca58-7761dbf39f0mr18060001b3a.6.1758056913491; Tue, 16 Sep 2025 14:08:33 -0700 (PDT) Received: from localhost (185.3.125.34.bc.googleusercontent.com. [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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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/pantho= r/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; } =20 -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 transact= ions + * for a region. + */ +static void mmu_hw_cmd_lock(struct panthor_device *ptdev, u32 as_nr, u64 r= egion_start, u64 size) { u8 region_width; u64 region; @@ -609,7 +618,7 @@ static int mmu_hw_do_operation_locked(struct panthor_de= vice *ptdev, int as_nr, * power it up */ =20 - lock_region(ptdev, as_nr, iova, size); + mmu_hw_cmd_lock(ptdev, as_nr, iova, size); =20 ret =3D mmu_hw_wait_ready(ptdev, as_nr); if (ret) --=20 2.51.0.384.g4c02a37b29-goog