From patchwork Fri Jun 17 07:54:24 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 9182915 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A212F6075F for ; Fri, 17 Jun 2016 07:56:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9264028308 for ; Fri, 17 Jun 2016 07:56:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 876012839C; Fri, 17 Jun 2016 07:56:35 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9F44328308 for ; Fri, 17 Jun 2016 07:56:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1D1F46EB33; Fri, 17 Jun 2016 07:56:30 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mailout4.w1.samsung.com (mailout4.w1.samsung.com [210.118.77.14]) by gabe.freedesktop.org (Postfix) with ESMTPS id 117946EB2E for ; Fri, 17 Jun 2016 07:54:44 +0000 (UTC) Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout4.w1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0O8W00KHVON5H900@mailout4.w1.samsung.com> for dri-devel@lists.freedesktop.org; Fri, 17 Jun 2016 08:54:41 +0100 (BST) X-AuditID: cbfec7f4-f796c6d000001486-3b-5763acc04e2f Received: from eusync1.samsung.com ( [203.254.199.211]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id 27.FF.05254.0CCA3675; Fri, 17 Jun 2016 08:54:40 +0100 (BST) Received: from AMDC2765.digital.local ([106.116.147.25]) by eusync1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTPA id <0O8W00AVTOMWCT10@eusync1.samsung.com>; Fri, 17 Jun 2016 08:54:40 +0100 (BST) From: Marek Szyprowski To: dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH v2 2/5] drm/exynos: iommu: add a check if all sub-devices have iommu controller Date: Fri, 17 Jun 2016 09:54:24 +0200 Message-id: <1466150067-8065-3-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1466150067-8065-1-git-send-email-m.szyprowski@samsung.com> References: <1466150067-8065-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprMLMWRmVeSWpSXmKPExsVy+t/xy7oH1iSHG8yaqG9xa905VouNM9az Wlz5+p7NYtL9CSwWL+5dZLF4/cLQYsb5fUwWa4/cZbeYMfklmwOnx/3u40wefVtWMXp83iQX wBzFZZOSmpNZllqkb5fAlfHx3CrWginsFctXPWZuYGxl62Lk5JAQMJHo//iIFcIWk7hwbz1Q nItDSGApo8TJG+dZIJwmJon/l5Ywg1SxCRhKdL3tAusWEXCTaDo8kxWkiFlgC5NE+66NTF2M HBzCAokSR1abg9SwCKhKnPy1AmwDr4C7xP53kxkhtslJnDw2GSzOKeAh8XB/D1hcCKhm7vml LBMYeRcwMqxiFE0tTS4oTkrPNdQrTswtLs1L10vOz93ECAmqLzsYFx+zOsQowMGoxMO7QjQ5 XIg1say4MvcQowQHs5IIL+MqoBBvSmJlVWpRfnxRaU5q8SFGaQ4WJXHeubvehwgJpCeWpGan phakFsFkmTg4pRoY7fbs2G4V9yo4YV+cf+Kr73MZP19dfDSS285l9g836yvsrWXhr91mn2Vm idUo2brjg6DrogdeK//dslvN6dgRK2QnnG01S+zEouMKB966Pz4X0CEpEZRnNm133fwdMyNS I4JF2w99q/2+IHfD9WM/T0h9eMQ+9cDC6+e5755K6j+cZnj9ZMWxh0osxRmJhlrMRcWJALZR ca0mAgAA Cc: Krzysztof Kozlowski , Bartlomiej Zolnierkiewicz , Seung-Woo Kim , Andrzej Hajda , Marek Szyprowski X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP This patch adds a check if all devices belonging to Exynos DRM have the same dma_map_ops set. This is required to enable operation with IOMMU enabled. Signed-off-by: Marek Szyprowski --- drivers/gpu/drm/exynos/exynos_drm_iommu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/exynos/exynos_drm_iommu.c b/drivers/gpu/drm/exynos/exynos_drm_iommu.c index 1e82529e0c41..36dde9691274 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_iommu.c +++ b/drivers/gpu/drm/exynos/exynos_drm_iommu.c @@ -97,6 +97,11 @@ int drm_iommu_attach_device(struct drm_device *drm_dev, if (!priv->mapping) return 0; + if (get_dma_ops(priv->dma_dev) != get_dma_ops(subdrv_dev)) { + DRM_ERROR("Device %s lacks support for IOMMU\n", + dev_name(subdrv_dev)); + return -EINVAL; + } ret = configure_dma_max_seg_size(subdrv_dev); if (ret)