From patchwork Thu Dec 21 16:54:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 13502394 Received: from EUR01-DB5-obe.outbound.protection.outlook.com (mail-db5eur01on2053.outbound.protection.outlook.com [40.107.15.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7CAC1634F8; Thu, 21 Dec 2023 16:54:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="ONmXltIa" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=di20RUglnkTR40FVPLINJiUKyI0tUGoY4mXMB0rKT+Qu93PcHExbkebEJx8rKrEEAOIAbv0/e3mfcZ0n7FVO/zj+UjwkvbDS7pjD4Xe2uggfSMw/gOSUsgUgSX938dz+LQYDuC7rpfxK4q/0nt5GiP7oI148Mrj/GW5SdcauNAVD3d4hHQQvQf6nsO8hWgpjVAXQEojfBsIIzhMFDojSDDuazrbb8Gm5FxdWRkv/tZ+3zCZi/TeWWBMJQfQwCZyCcPkhbbTgjo/rB078V9GfvUNKfE7trPMBm/a9+I48V9fJu6n4evLCk6jVnchLJhIqEaXU+7nt9ZmwAWyLGBk9Lw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=1uU/DgeUPYPON4N4JAteu/Ha75T2xugBeu8V8eh6toY=; b=iarZ9iICei29MyyzmRC4Fs7YIfKU6G2SesDb+2PmwvL8fwljDcsemUZLPRPJgBjAqgoMpBEYIy/c2d+NNA1ezJ9VDUIVf+T8MWdnZy5vT2fb9WWErXBT3+40h2R5+YY48Gf+tUgSb7xP1xlIyBMMJusWV1VsRiuApyW3apg1vFw0+0gQn25QzSAc2amIiqVrpFmJZI2OBuV4cXwUsSgK8Dko51yb898EmSpRqldJdtpkP7f5ivnt9Gk5x4vwiA9QKnJzrwdo9XIJ8rbI+9TEI8quFu0Xf2GRJrpBbPFn9k0HkDBnh+G/MEP+co0yqd+QmnwG1kV4YxADt/pkcgGhgA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1uU/DgeUPYPON4N4JAteu/Ha75T2xugBeu8V8eh6toY=; b=ONmXltIatheBfEKmaTmTngg/2qeGGGOc80OCZurpiTw9630ASqN3fjqUy35jRBAUL+iTGu44RHMtGHkueJTrzBOzUmdjCybNilARqb4VNiV5bQd+EZNJiHt8Qh07jmdIf0PFtLx3zb6tTKn94PGKf1hgUKWGJ+cfIzanyULTPA8= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) by PR3PR04MB7324.eurprd04.prod.outlook.com (2603:10a6:102:91::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7113.21; Thu, 21 Dec 2023 16:54:49 +0000 Received: from AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::95f5:5118:258f:ee40]) by AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::95f5:5118:258f:ee40%7]) with mapi id 15.20.7113.019; Thu, 21 Dec 2023 16:54:49 +0000 From: Frank Li To: peter.chen@kernel.org, cugyly@163.com Cc: Frank.Li@nxp.com, a-govindraju@ti.com, gregkh@linuxfoundation.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, pawell@cadence.com, rogerq@kernel.org Subject: [PATCH 3/4] usb: cdns3: Fix uvc fail when DMA cross 4k boundery since sg enabled Date: Thu, 21 Dec 2023 11:54:25 -0500 Message-Id: <20231221165426.1590866-4-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231221165426.1590866-1-Frank.Li@nxp.com> References: <20231221165426.1590866-1-Frank.Li@nxp.com> X-ClientProxiedBy: SJ0PR13CA0226.namprd13.prod.outlook.com (2603:10b6:a03:2c1::21) To AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB4838:EE_|PR3PR04MB7324:EE_ X-MS-Office365-Filtering-Correlation-Id: 5c8d98d5-cf49-4643-2ba5-08dc02458b93 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM6PR04MB4838.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(396003)(136003)(366004)(346002)(376002)(39860400002)(230922051799003)(64100799003)(451199024)(186009)(1800799012)(2616005)(6512007)(6666004)(26005)(6506007)(1076003)(52116002)(83380400001)(4326008)(8676002)(8936002)(41300700001)(2906002)(6486002)(478600001)(316002)(5660300002)(66946007)(66476007)(66556008)(36756003)(86362001)(38100700002)(38350700005);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: Y8jF0os8liuFVHaGnXzg3B0qfiiYY+zaf/8/GUF/xfKqNGqIn13wSILtPv8VeA+dX+GwhR3bUOpNGfs5nofxf2hWhgj9Snbn0bYQOB0lFvVTjj9yv489E6HTDoTCLyeSmkt1DgCBCnoo5MLQy9w8jlbq+gawsWM96OI/i6X6Cpt0wFVXwLo79wFgRL+9sh0En1r7hR/b79WpzE5WwjN1raFQHE9zSNp9qnTv3v6/+UhpLbddPHGASesCdeoXFlkCPuBLJiuO3gUqisefuLhTSJFP7DvjYEqcNEHcZo4mnPfGjd20zjpcrVH5ELhhuCydfK5oYIjnxhsCy8JitRcTZEI2zDsgH65n3fNlIU2YSPidsOLy6D79Zsr24/uvEqU5CQRbxAnyLQzlTb7xwAOVmdXcyYt2zd9AhV0HQ1cCazclp8quECe+o1tb+I19uG5Uv3Qw9EcOYKjPSNSZFjvH1+silKyVi1D41rD9oA7G3fRcYgK7qq1h4fixffwWk38NZCR7f0Pb2rUKzL9zRuT9p60fjpG/0qPdmzlcJ0Rsd7im2AHY2U09ibVMMY6nvZhA/VrGJw/CXc7gT8qRF6qDBI1OPndoUps8UkZDpokJZkeDhEn1G9ef2HiJtAdvoULRn1ISurvXTJR8Hhb7lcXC+5qpT0Ya3AOCpikGeZlzmBUXPh0W6w/h4adBzB25CiE4dLrZN+mNtaHKpfx03/x/sdc3VQRCxxq4aoY17alX1RtrXdqpxA+e8CdVFPSrbZfjoj4aFZXtaYy8PA1CzNirOYpn+d1pM7ajwe0ciAUxzHSSqqm0quwaj/fSo245oUBnBXLIt2Y+i4qyp3Cm6Ij4hjlUgK3x5plgiIA4VGwJ+8hntJwzaAjRPUonhDP0CjyrrRrxUB7z1lun8GSiDXDIZOeMNcd8qExWWVctUcpLkNCDv8dBYNo2IBglDk8OCF70gWLY7/bW8QqKNxgf04BZLWsiigi+CwsbzehceDDTm7DulAeNjnQhqQ1bFsFPF+x8ZljHHxCIAG1AOxEbRiZuRquzoE0fuKUHay/YpqlSraSii+14cJiIvhSwl2ahr3/ffFUE74Gf+rinYRtaSCy7uf3I4CSFfMxeYCNMk2f7spHxEQHuD5jPieDMFPFVX5StgJM2TDspVED/Fq3JM0AEAEyCrFjz2EiuI8KSK6SVf1zNuEvc2jnbD8Ej/TlQ/EpDV3rN8hJGXbk0JADSd/9fYv1dWBFkiRMWLedWlTQddM3l6rTQt937NcuMr1b/vmdBKh2+Ci/l+hiQXeFdM/KnQM+q7E6E8iC92MP0X2xCw6pWpPkC2P9Uugea03ngvT+dXvzPIUP4SGg6N/c8ps6TlFWQ9jZHsEp4IWvE1PRg6JDfQ3aneo0bPcq3RJ5G74LQh/iCsOKrkjxY/qdG/L96H4qvMjUZjBgRGcfQwuxzpMFC0bJEoSDBzSkq0aY2lItss7hjxv/XpMcs9uEBb1ZiQH2Z581tOOhmEXjWCmuljuUOMNYyweHOgUyw8ipaNrhRJ7K/N3ZSWSdnjCeT3saAZ5+cFKXrHCM3yCh4ewSryKw7W9/6fbRAsex8nU0NLOL/ X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5c8d98d5-cf49-4643-2ba5-08dc02458b93 X-MS-Exchange-CrossTenant-AuthSource: AM6PR04MB4838.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Dec 2023 16:54:49.8727 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: CbDQy+yb43jLakY7y5XMSYg7UeOVIF9PHEIQHyjYGoTC3tj63RL29haW6u4vKmPdzjY+rUbM22P3kNAgYFYRNw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PR3PR04MB7324 Supposed DMA cross 4k bounder problem should be fixed at DEV_VER_V2, but still met problem when do ISO transfer if sg enabled. Data pattern likes below when sg enabled, package size is 1k and mult is 2 [UVC Header(8B) ] [data(3k - 8)] ... The received data at offset 0xd000 will get 0xc000 data, len 0x70. Error happen position as below pattern: 0xd000: wrong 0xe000: wrong 0xf000: correct 0x10000: wrong 0x11000: wrong 0x12000: correct ... To avoid DMA cross 4k bounder at ISO transfer, reduce burst len according to start DMA address's alignment. Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver") Signed-off-by: Frank Li --- drivers/usb/cdns3/cdns3-gadget.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/drivers/usb/cdns3/cdns3-gadget.c b/drivers/usb/cdns3/cdns3-gadget.c index 4c6893af22dde..aeca902ab6cc4 100644 --- a/drivers/usb/cdns3/cdns3-gadget.c +++ b/drivers/usb/cdns3/cdns3-gadget.c @@ -1120,6 +1120,7 @@ static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep, u32 togle_pcs = 1; int sg_iter = 0; int num_trb_req; + int trb_burst; int num_trb; int address; u32 control; @@ -1243,7 +1244,36 @@ static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep, total_tdl += DIV_ROUND_UP(length, priv_ep->endpoint.maxpacket); - trb->length |= cpu_to_le32(TRB_BURST_LEN(priv_ep->trb_burst_size) | + trb_burst = priv_ep->trb_burst_size; + + /* + * Supposed DMA cross 4k bounder problem should be fixed at DEV_VER_V2, but still + * met problem when do ISO transfer if sg enabled. + * + * Data pattern likes below when sg enabled, package size is 1k and mult is 2 + * [UVC Header(8B) ] [data(3k - 8)] ... + * + * The received data at offset 0xd000 will get 0xc000 data, len 0x70. Error happen + * as below pattern: + * 0xd000: wrong + * 0xe000: wrong + * 0xf000: correct + * 0x10000: wrong + * 0x11000: wrong + * 0x12000: correct + * ... + * + * But it is still unclear about why error have not happen below 0xd000, it should + * cross 4k bounder. But anyway, the below code can fix this problem. + * + * To avoid DMA cross 4k bounder at ISO transfer, reduce burst len according to 16. + */ + if (priv_ep->type == USB_ENDPOINT_XFER_ISOC && priv_dev->dev_ver <= DEV_VER_V2) + if (ALIGN_DOWN(trb->buffer, SZ_4K) != + ALIGN_DOWN(trb->buffer + length, SZ_4K)) + trb_burst = 16; + + trb->length |= cpu_to_le32(TRB_BURST_LEN(trb_burst) | TRB_LEN(length)); pcs = priv_ep->pcs ? TRB_CYCLE : 0;