From patchwork Sat Dec 23 18:29:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SmFzb24tSkggTGluICjmnpfnnb/npaUp?= X-Patchwork-Id: 13504119 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 4911BC47073 for ; Sat, 23 Dec 2023 18:30:58 +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=BPVj296jKSdvuov8Qy632nNECExlieobCV3S3KFJS1M=; b=A0b0iUBiKcMg/6 5xazOmfk+SnYwAxvFO131FV/2N+NlIbiT7cmpbwmKY2WO6tl8Kv4JnU7ysumeCk86sNFUmbSiIwsy DTi3z5a5NfIPx8YFBJttlwaGd82SUehE8hWuH7f9g+MmPD31L+9SfymI2WUWj/Fgmhv6751NlrLl5 YQAJBu+RN7qR8jqxUgz00BqvQm3FVyUXXDQswPK8SMsESVjtnnxf4yow/Bny3mQL8TJEXLNfPNUiI /dFXjP1C4sEUFKrjvNxWtdzryRaZjVu5VhizfOj5+J7EYp5wkL6A84YyONLK4XBJfNz6arEDLKzRZ xXXPcPhNCHIvKaiOXQoA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rH6lY-008IkR-0k; Sat, 23 Dec 2023 18:30:28 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rH6ks-008IGF-0y; Sat, 23 Dec 2023 18:29:49 +0000 X-UUID: 3ac726d4a1c111ee958cff29c719f35b-20231223 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=g3zby7Chx2qa09kTTNK9eMNsXxgeV452k3Eq07i7i1o=; b=CuafQlOz6O0ipbWgdhuKPrIajGhKqAUqlnJxPxZqqV84oADif9/qSaPbKgfKocECRSG4k2cx4KDFexiTJ1lAtaoEsaf93NXCer90t67QiIW8wlho8kdCaZw7Z+lfxEJJ1kAvRCzTsAIGb+ogiMEnQALLQ/V0N+JTG1iFkFtA5MY=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.35,REQID:079cafef-d2da-4263-8036-e91d929c99c5,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:5d391d7,CLOUDID:86c0692e-1ab8-4133-9780-81938111c800,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO, DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: 3ac726d4a1c111ee958cff29c719f35b-20231223 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1194828854; Sat, 23 Dec 2023 11:29:38 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Sun, 24 Dec 2023 02:29:35 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Sun, 24 Dec 2023 02:29:35 +0800 From: Jason-JH.Lin To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Chun-Kuang Hu CC: , , , , , , , Jason-ch Chen , Johnson Wang , "Jason-JH . Lin" , Singo Chang , Nancy Lin , Shawn Sung , , Jeffrey Kardatzke Subject: [PATCH v3 10/11] drm/mediatek: Add cmdq_insert_backup_cookie before secure pkt finalize Date: Sun, 24 Dec 2023 02:29:31 +0800 Message-ID: <20231223182932.27683-11-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20231223182932.27683-1-jason-jh.lin@mediatek.com> References: <20231223182932.27683-1-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-20231223_102946_342645_5ED23662 X-CRM114-Status: GOOD ( 15.15 ) 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 Add cmdq_insert_backup_cookie to append some commands before EOC: 1. Get GCE HW thread execute count from the GCE HW register. 2. Add 1 to the execute count and then store into a shared memory. 3. Set a software event siganl as secure irq to GCE HW. Since the value of execute count + 1 is stored in a shared memory, CMDQ driver in the normal world can use it to handle task done in irq handler and CMDQ driver in the secure world will use it to schedule the task slot for each secure thread. The reason why we use shared memory to record execute count here is: 1. normal world can not access the register of secure GCE thread in normal world. 2. calling TEE invoke cmd in the irq handler would be expensive and not stable. I've tested that a single TEE invloke cmd to CMDQ PTA costs 19~53 us. Maybe it would cost more during the scenario that needs more CPU loading. Signed-off-by: Jason-JH.Lin --- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index 79617c0f016d..856513a14cda 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -179,7 +179,7 @@ void mtk_crtc_disable_secure_state(struct drm_crtc *crtc) sec_scn = CMDQ_SEC_SCNR_SUB_DISP_DISABLE; cmdq_sec_pkt_set_data(&mtk_crtc->sec_cmdq_handle, sec_engine, sec_engine, sec_scn); - + cmdq_sec_insert_backup_cookie(&mtk_crtc->sec_cmdq_handle); cmdq_pkt_finalize(&mtk_crtc->sec_cmdq_handle); dma_sync_single_for_device(mtk_crtc->sec_cmdq_client.chan->mbox->dev, mtk_crtc->sec_cmdq_handle.pa_base, @@ -791,6 +791,8 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc, cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event); cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false); mtk_crtc_ddp_config(crtc, cmdq_handle); + if (cmdq_handle->sec_data) + cmdq_sec_insert_backup_cookie(cmdq_handle); cmdq_pkt_finalize(cmdq_handle); dma_sync_single_for_device(cmdq_client.chan->mbox->dev, cmdq_handle->pa_base,