From patchwork Fri May 24 09:23:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Sven_P=C3=BCschel?= X-Patchwork-Id: 13672966 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BEB7BC25B74 for ; Fri, 24 May 2024 09:45:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0C52310E232; Fri, 24 May 2024 09:45:46 +0000 (UTC) Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9CE7C10E15A for ; Fri, 24 May 2024 09:25:50 +0000 (UTC) Received: from dude04.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::ac]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1sARBB-0007SY-J8; Fri, 24 May 2024 11:25:37 +0200 From: =?utf-8?q?Sven_P=C3=BCschel?= To: hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, Michael Tretter , =?utf-8?q?Sven_P=C3=BCschel?= Subject: [PATCH] drm/rockchip: Set DMA max segment size Date: Fri, 24 May 2024 11:23:59 +0200 Message-Id: <20240524092400.2019587-1-s.pueschel@pengutronix.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:1101:1d::ac X-SA-Exim-Mail-From: s.pueschel@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: dri-devel@lists.freedesktop.org X-Mailman-Approved-At: Fri, 24 May 2024 09:45:44 +0000 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" From: Michael Tretter There is no reason to limit the DMA max segment size for the Rockchip VOP and VOP2. Set it to the maximum. This prevents the following warning when DMA API debugging is enabled with CONFIG_DMA_API_DEBUG_SG=y: DMA-API: rockchip-drm display-subsystem: mapping sg segment longer than device claims to support [len=208896] [max=65536] Signed-off-by: Michael Tretter Signed-off-by: Sven Püschel --- drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 2 ++ 1 file changed, 2 insertions(+) base-commit: 39bc27bd688066a63e56f7f64ad34fae03fbe3b8 diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index ab55d7132550..0f93efd1a8fa 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -67,6 +67,8 @@ int rockchip_drm_dma_attach_device(struct drm_device *drm_dev, } } + dma_set_max_seg_size(drm_dev->dev, UINT_MAX); + ret = iommu_attach_device(private->domain, dev); if (ret) { DRM_DEV_ERROR(dev, "Failed to attach iommu device\n");