From patchwork Thu Jul 26 23:16:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 10546661 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EC3CF180E for ; Fri, 27 Jul 2018 07:02:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DFE142B4C9 for ; Fri, 27 Jul 2018 07:02:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D374D2B4CC; Fri, 27 Jul 2018 07:02:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D7C8B2B4C9 for ; Fri, 27 Jul 2018 07:02:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5036E6E906; Fri, 27 Jul 2018 07:01:24 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-lf1-x141.google.com (mail-lf1-x141.google.com [IPv6:2a00:1450:4864:20::141]) by gabe.freedesktop.org (Postfix) with ESMTPS id F08876E865; Thu, 26 Jul 2018 23:22:34 +0000 (UTC) Received: by mail-lf1-x141.google.com with SMTP id u14-v6so2324865lfu.0; Thu, 26 Jul 2018 16:22:34 -0700 (PDT) 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:in-reply-to :references; bh=gWulCqaqXR15Jcn4BTz7nY1Dimo7wlyI3fOTGoNV13g=; b=csvB9KrtTgofTQaVM9Lv7zvvg78VTgiyX/1i1JmT2x73aXQpAJ6ZVqMnvt1Bncb/IU 0oTTFsgFxpsfUg5dqjw3yM6KNkyM8fwR20S4IUP1XRQTOv0nJfEOpywNvr0YqA2QebFe Tm2tGadtsJzbwIrRN2hFLKyBU40aKG0fkocWMidfbkyejxVM6lOkRusYN2Tbs9W9CfDa gtHb/sAu0B2ONSCgkQYiCoaBzcMUh159gUG0PzPEv3nDOr+GWhg1xA3nVlBODwcXhm8g QdbUCGsHNW6cGrY95fR+DHDapVoRYeeLnm1imz3N3wfpjIQ+6ri9JGTHFE/seV/Yv9qx LbQg== X-Gm-Message-State: AOUpUlFi5tJid5+XILvNBN07fC/bVp0G5NFMtANhocPEZoQnmqocBkrQ g9lDG18G6tZXhbWk28+BDaU= X-Google-Smtp-Source: AAOMgpdsARcWGyY3rphCjfZTnRFuC/De1O2rpsI6GtgezCrd4WZFT4r0IMyB5kZY06je67KyodA0Zw== X-Received: by 2002:a19:501e:: with SMTP id e30-v6mr2449667lfb.71.1532647353445; Thu, 26 Jul 2018 16:22:33 -0700 (PDT) Received: from localhost.localdomain (109-252-90-13.nat.spd-mgts.ru. [109.252.90.13]) by smtp.gmail.com with ESMTPSA id q15-v6sm411541ljg.62.2018.07.26.16.22.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 26 Jul 2018 16:22:32 -0700 (PDT) From: Dmitry Osipenko To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Thierry Reding , Jonathan Hunter , Mikko Perttunen , Rob Herring , Frank Rowand , Ben Skeggs , Russell King , Catalin Marinas , Will Deacon , Joerg Roedel , Nicolas Chauvet Subject: [RFC PATCH v1 3/6] drm/tegra: Avoid implicit DMA backing with IOMMU Date: Fri, 27 Jul 2018 02:16:21 +0300 Message-Id: <20180726231624.21084-4-digetx@gmail.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180726231624.21084-1-digetx@gmail.com> References: <20180726231624.21084-1-digetx@gmail.com> X-Mailman-Approved-At: Fri, 27 Jul 2018 07:01:20 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, iommu@lists.linux-foundation.org, linux-tegra@vger.kernel.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Tegra DRM manages IOMMU by itself, backing DMA with IOMMU by the drivers core breaks the Tegra driver. Signed-off-by: Dmitry Osipenko --- drivers/gpu/drm/tegra/dc.c | 1 + drivers/gpu/drm/tegra/gr2d.c | 1 + drivers/gpu/drm/tegra/gr3d.c | 1 + drivers/gpu/drm/tegra/vic.c | 1 + 4 files changed, 4 insertions(+) diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index eb9bb83f8f5d..4827770939e3 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -2675,6 +2675,7 @@ static const struct dev_pm_ops tegra_dc_pm_ops = { struct platform_driver tegra_dc_driver = { .driver = { .name = "tegra-dc", + .no_implicit_iommu = true, .of_match_table = tegra_dc_of_match, .pm = &tegra_dc_pm_ops, }, diff --git a/drivers/gpu/drm/tegra/gr2d.c b/drivers/gpu/drm/tegra/gr2d.c index 3c5503f1bf3d..e427585ef5cc 100644 --- a/drivers/gpu/drm/tegra/gr2d.c +++ b/drivers/gpu/drm/tegra/gr2d.c @@ -327,6 +327,7 @@ static int gr2d_remove(struct platform_device *pdev) struct platform_driver tegra_gr2d_driver = { .driver = { .name = "tegra-gr2d", + .no_implicit_iommu = true, .of_match_table = gr2d_match, }, .probe = gr2d_probe, diff --git a/drivers/gpu/drm/tegra/gr3d.c b/drivers/gpu/drm/tegra/gr3d.c index 651e697ccbba..f54710c36afb 100644 --- a/drivers/gpu/drm/tegra/gr3d.c +++ b/drivers/gpu/drm/tegra/gr3d.c @@ -481,6 +481,7 @@ static int gr3d_remove(struct platform_device *pdev) struct platform_driver tegra_gr3d_driver = { .driver = { .name = "tegra-gr3d", + .no_implicit_iommu = true, .of_match_table = tegra_gr3d_match, }, .probe = gr3d_probe, diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c index 0e6642bb8524..4ecc466ee490 100644 --- a/drivers/gpu/drm/tegra/vic.c +++ b/drivers/gpu/drm/tegra/vic.c @@ -402,6 +402,7 @@ static const struct dev_pm_ops vic_pm_ops = { struct platform_driver tegra_vic_driver = { .driver = { .name = "tegra-vic", + .no_implicit_iommu = true, .of_match_table = vic_match, .pm = &vic_pm_ops },