From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55F00C433FF for ; Mon, 29 Jul 2019 05:33:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 29FFE2070D for ; Mon, 29 Jul 2019 05:33:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="X7ZzQJG0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726761AbfG2Fdy (ORCPT ); Mon, 29 Jul 2019 01:33:54 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:37350 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726314AbfG2Fdx (ORCPT ); Mon, 29 Jul 2019 01:33:53 -0400 Received: by mail-pg1-f196.google.com with SMTP id i70so16880459pgd.4 for ; Sun, 28 Jul 2019 22:33:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=DPXHy1a69mKAzAt5eK/5mGSu5mMYfcr+qJqjDh7NSaQ=; b=X7ZzQJG0cNXQD6YQsemOKW/jT5dXIqlD5c4Jcz7JtWEhIqBe209fc02CAGpqr+SYx0 gHPYOCrdYg3Ro7wBapt85n2eL90PlzXxI3QY75kWqphNBvBEhfTaqOY9NODoZZKpkG2h jgrZXO+DLTuPGvJ9LjyhDaLG7s2coSQiQVGuM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=DPXHy1a69mKAzAt5eK/5mGSu5mMYfcr+qJqjDh7NSaQ=; b=DuGSM4zdKiWfsLd4GJ7suzwvddTRbE6ZqqEAco/63CIWwaphJdxylr6c+PJYvlgpHm OxCMbSjI2hrGRat2GijnoyDQgBwUC0ncO/Ct3LqIStQozaZoWFDeZu7dTSx4jB/CLFNo LoW1BQmkDqjxs0gJWw2j3qNe3IdIV88gNw8y5TEXWJfoYdwcvZxPfM6UdD8mdHiXU+eW SDsNyXftcH3x/6MO5jslqqeKK7Yd4oVjyPxtqVXIPthhnoi9u/E9e/cDN3cIXDAcARkh sLQGlV85vD75tfZICeYGobc4lrhxA/3tQdx95IHE3RPY5GQjgWr1SQFSPBEucYueljGw azEQ== X-Gm-Message-State: APjAAAW0AkrOlHCpbFWntLwvqkpUHiNPdD/ObFEN/zFa5lA6PqAYoxli fvTRQXd6/z2uqdtKcga5qigc9Q== X-Google-Smtp-Source: APXvYqygDVAWdgpICHSE02DV6msSDKrPaHx2VAR3/vrWfQrTSpR/C3whA4rXoQaV+tRhbTuC/OWZhg== X-Received: by 2002:a17:90a:1d8:: with SMTP id 24mr111974489pjd.70.1564378433305; Sun, 28 Jul 2019 22:33:53 -0700 (PDT) Received: from acourbot.tok.corp.google.com ([2401:fa00:4:4:9712:8cf1:d0f:7d33]) by smtp.gmail.com with ESMTPSA id z4sm93792810pfg.166.2019.07.28.22.33.50 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Sun, 28 Jul 2019 22:33:52 -0700 (PDT) From: Alexandre Courbot To: CK Hu , Philipp Zabel , David Airlie , Daniel Vetter , Matthias Brugger , Tomasz Figa Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, Alexandre Courbot Subject: [PATCH v2 0/2] drm/mediatek: make imported PRIME buffers contiguous Date: Mon, 29 Jul 2019 14:33:33 +0900 Message-Id: <20190729053335.251379-1-acourbot@chromium.org> X-Mailer: git-send-email 2.22.0.709.g102302147b-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The default DMA segment size was used when importing PRIME buffers, which resulted in a chance of them not being contiguous in the virtual IO space of the device and mtk_gem_prime_import_sg_table() complaining that the SG table was not contiguous as it expects. This series fixes this issue by 1) Using the correct DMA device when importing PRIME buffers, 2) Setting a more suitable DMA segment size on the DMA device than the default 64KB. Changes since v1: - Split into two patches, - Fixed an error path that would have returned 0. Alexandre Courbot (2): drm/mediatek: use correct device to import PRIME buffers drm/mediatek: set DMA max segment size drivers/gpu/drm/mediatek/mtk_drm_drv.c | 49 ++++++++++++++++++++++++-- drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 ++ 2 files changed, 48 insertions(+), 3 deletions(-) -- 2.22.0.709.g102302147b-goog