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Lin" , Singo Chang , Nancy Lin , Shawn Sung , , , , , Subject: [PATCH v3 1/2] drm/mediatek: Fix iommu fault by swapping FBs after updating plane state Date: Mon, 10 Jul 2023 17:32:52 +0800 Message-ID: <20230710093253.32224-2-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230710093253.32224-1-jason-jh.lin@mediatek.com> References: <20230710093253.32224-1-jason-jh.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230710_023302_895515_AB258C5F X-CRM114-Status: GOOD ( 11.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org According to the comment in drm_atomic_helper_async_commit(), we should make sure FBs have been swapped, so that cleanups in the new_state performs a cleanup in the old FB. So we should move swapping FBs after calling mtk_plane_update_new_state(), to avoid using the old FB which could be freed. Fixes: 1a64a7aff8da ("drm/mediatek: Fix cursor plane no update") Signed-off-by: Jason-JH.Lin Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Alexandre Mergnat Reviewed-by: CK Hu --- drivers/gpu/drm/mediatek/mtk_drm_plane.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c index 31f9420aff6f..b1a918ffe457 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c @@ -210,9 +210,9 @@ static void mtk_plane_atomic_async_update(struct drm_plane *plane, plane->state->src_y = new_state->src_y; plane->state->src_h = new_state->src_h; plane->state->src_w = new_state->src_w; - swap(plane->state->fb, new_state->fb); mtk_plane_update_new_state(new_state, new_plane_state); + swap(plane->state->fb, new_state->fb); wmb(); /* Make sure the above parameters are set before update */ new_plane_state->pending.async_dirty = true; mtk_drm_crtc_async_update(new_state->crtc, plane, state); From patchwork Mon Jul 10 09:32:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jason-JH.Lin" X-Patchwork-Id: 13306575 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 1FCD2C001DC for ; Mon, 10 Jul 2023 09:33:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DtjruTutlv28Eu0Gn3rvP97bjXUWcRra86lAjWuoyf8=; b=mxOmKtrBAjiGgd v3vkUDCwoRlu0SHEUpCVkCv9/lWhmMbiFKqFetz2vKEFxCYLTWpNsDV/isNQdekDrzWs53PiJw6fe ZOCx7uqdTyjE2zR08cqYbI+s40jqqgOClj9osH1Y9U+fwy+fYJerSFlod8thEgFJ5vN+MVNRS7GbR 5U5bhsPeukCU5S2M6I0wEEU+RAtPDHi3D3sKFAOk9L57vrpijrVBisgwpa334C23YZ6JOFnT7Rtxr e7Y9nB0i+Y+t9sn1JnVw0e3fyKh9AxIlxF9Xi+w2y0PVsFTWP+vIvJWTrbADzj2ZzW0jY2VqmDyjn 0eLZjlNy7IGXhJHHyVMw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qInGX-00B1W4-06; Mon, 10 Jul 2023 09:33:09 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qInGQ-00B1QP-2h; Mon, 10 Jul 2023 09:33:05 +0000 X-UUID: c117215c1f0411ee83ed1395ce914268-20230710 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=IHUOGEvB5ltpMjrN9lWAvURdd2zQktFyrFVbbB+w9nw=; b=JzByL5g8Vj/mRd69KM1bxrXVNN0oEZPYlwv570TlK0FMaUXSvurxe0L2uAOSp50kGzu2rDLgrTq4/cnz09oeTaZiNdhke+UhhC7Sl8PGTwm7khCO4b08cwGWS/2ufioeopebYYLQh9FcdQ7WOc9NEbglguWhHZvXG/p6jhmdRtQ=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.28,REQID:4d9ef932-10ac-4070-a247-4fea2afafc6e,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:95 X-CID-INFO: VERSION:1.1.28,REQID:4d9ef932-10ac-4070-a247-4fea2afafc6e,IP:0,URL :0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTION :quarantine,TS:95 X-CID-META: VersionHash:176cd25,CLOUDID:378a0f0e-c22b-45ab-8a43-3004e9216b56,B ulkID:230710173258Q37Q3X65,BulkQuantity:1,Recheck:0,SF:29|28|17|19|48|38,T C:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil,Bulk:40,QS:nil,BEC:nil,COL:0, OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_SDM,TF_CID_SPAM_ASC,TF_CID_SPAM_FAS, TF_CID_SPAM_FSD X-UUID: c117215c1f0411ee83ed1395ce914268-20230710 Received: from mtkmbs14n1.mediatek.inc [(172.21.101.75)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1307142789; Mon, 10 Jul 2023 02:32:57 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by MTKMBS14N2.mediatek.inc (172.21.101.76) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Mon, 10 Jul 2023 17:32:54 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Mon, 10 Jul 2023 17:32:54 +0800 From: Jason-JH.Lin To: Chun-Kuang Hu , AngeloGioacchino Del Regno , Alexandre Mergnat CC: Matthias Brugger , Jason-ch Chen , Johnson Wang , "Jason-JH . Lin" , Singo Chang , Nancy Lin , Shawn Sung , , , , , Subject: [PATCH v3 2/2] drm/mediatek: Fix iommu fault during crtc enabling Date: Mon, 10 Jul 2023 17:32:53 +0800 Message-ID: <20230710093253.32224-3-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230710093253.32224-1-jason-jh.lin@mediatek.com> References: <20230710093253.32224-1-jason-jh.lin@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230710_023302_911712_1301E96F X-CRM114-Status: GOOD ( 10.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org OVL layer should not be enabled before crtc is enabled. The plane_state of drm_atomic_state is not sync to the plane_state stored in mtk_crtc during crtc enabling, so just set all planes to disabled. Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.") Signed-off-by: Jason-JH.Lin Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Alexandre Mergnat --- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index d40142842f85..51d10e65004e 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -410,6 +410,9 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc) unsigned int local_layer; plane_state = to_mtk_plane_state(plane->state); + + /* should not enable layer before crtc enabled */ + plane_state->pending.enable = false; comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer); if (comp) mtk_ddp_comp_layer_config(comp, local_layer,