From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIMWL_WL_MED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 396CCC433F5 for ; Tue, 28 Aug 2018 09:48:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C15E02089F for ; Tue, 28 Aug 2018 09:48:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=Synaptics.onmicrosoft.com header.i=@Synaptics.onmicrosoft.com header.b="Gtpc12TQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C15E02089F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=synaptics.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727322AbeH1Njf (ORCPT ); Tue, 28 Aug 2018 09:39:35 -0400 Received: from mail-sn1nam01on0054.outbound.protection.outlook.com ([104.47.32.54]:34748 "EHLO NAM01-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726977AbeH1Nje (ORCPT ); Tue, 28 Aug 2018 09:39:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Synaptics.onmicrosoft.com; s=selector1-synaptics-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=SPVqHNByEiCSqnKU+rkrqKliRa4UGfRZRbWYP+VbAfE=; b=Gtpc12TQfcGZ9tucbf9U5zU8mUNaP4Fgi73aXG84nZOmBupv2khez/jelR0stacmvqLmP3S6/2A9hv12Zwai+MgS3/A74E654IurRELfImZkpZ8zLLBmK9G2R3BAJB87K9/dR6IVDoDnkAzw0EgF1C9bs8iBMiU+FgESNsb9uyM= Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Jisheng.Zhang@synaptics.com; Received: from xhacker.debian (124.74.246.114) by BLUPR0301MB1569.namprd03.prod.outlook.com (2a01:111:e400:52a9::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1080.15; Tue, 28 Aug 2018 09:48:40 +0000 Date: Tue, 28 Aug 2018 17:45:34 +0800 From: Jisheng Zhang To: Adrian Hunter , Ulf Hansson Cc: , , Subject: [PATCH v6 0/3] solve SDHCI DWC MSHC 128MB DMA boundary limitation Message-ID: <20180828174534.00fb5e24@xhacker.debian> X-Mailer: Claws Mail 3.17.1 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Originating-IP: [124.74.246.114] X-ClientProxiedBy: TYAPR03CA0009.apcprd03.prod.outlook.com (2603:1096:404:14::21) To BLUPR0301MB1569.namprd03.prod.outlook.com (2a01:111:e400:52a9::15) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 7e702f29-6c68-414a-1003-08d60ccb7019 X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989137)(4534165)(4627221)(201703031133081)(201702281549075)(8990107)(5600074)(711020)(2017052603328)(7153060)(7193020);SRVR:BLUPR0301MB1569; X-Microsoft-Exchange-Diagnostics: 1;BLUPR0301MB1569;3:rTe2k17tzChjyrTJIqSzjsHRyGZaJTThSYq7TLFCOhZqdm+ziL+DFnWmic53XnIPir2CVS7DxCllyFEfwO7vGwe7w6EZva+JREY6JPNBGzGaO/5Tv+lySK6vxc9sfEGEclR8b4n0Y06NDJlA+0BFREUbWDDwChBSSItKXqcveMcdlfPRmicVmHqIDBf7nW9q19NesTNFbNwqB0iNK499nTYp1ktf+MsZVOBHN5sQ1KxIOS5q5IedWRLcODWWXWK1;25:m58Kmjywa7PnsHQZuG1WcJAquM2pxmhxNKiJkZaVBB8hgKUM7W0KA/C5PjhlogjolIffPvmFrtaJHQqBoMK7LMQTCxA3J2kCKN3QBHzerGp7iiPzxDbJFC0xIZqCxT5bDjcNWmoDmCRHdu4rCwg7XAZMn36IoTsKGq8ZuWNbsTb/taoGx5S7GJNbGaKCmMK2Xbwm6VqreU1DptKId7T2WR62Kcc9+iqgOfUZ3nFk7t8rV0QmDjX7TngW+O+QfK87O0Xh3fFx2I1bmUEvYG1dGwWvDbYpKJ5chXzjepepbSCUNswK30PkQISFwWZnOwQbfMj4crgMn3bwiuq+hYJMuQ==;31:zrDCA8a1wdOkxek6DXxBFaAoFQxOuu4UcjvyyK4n9SYMSnL0XhPEjecnl6SskeK+a4bCXe5t8vQEl/vjK7NJSDdwDfUB/F7sq8L3sQq6FqIpy/B+9yvJsgb34U8lHnbDpXkO5FrfLq5eHjviNHxRJwmyR1yGabRwQ+Em+1+Zi3phXLeHLGa6hBOv/NsFlmXOG1g83PtaEcsKr5Ks6io591CtqNAVyjS6svX0BVB1wfI= X-MS-TrafficTypeDiagnostic: BLUPR0301MB1569: X-Microsoft-Exchange-Diagnostics: 1;BLUPR0301MB1569;20: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;4:A8XEAeSJRt5EFkRzplCOdCCMq9GMoOhhToHFfWgw39s2iNtKKpl3WOeL12gq7aOs8spcPN1DAq4oitg2DreIt/D6uEFY0kqOWSeeE4tbGppT/rBKbKX28/jJemIJsWCMFWEvsFBoPW+ev8bjdpZO65INsIMF8RXqd/ZrRD+072BSGgVIlKeFTeSnJMGR9Y6qomcNS0FL4WITgSZ7T9hyqh7fE/kyCowHx6/lKxb3DLp2iAINs1j9IvG4BOM/nxeAsZM8hIILCci5/RDz+R7sfg== X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-MS-Exchange-SenderADCheck: 1 X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:(6040522)(2401047)(8121501046)(5005006)(93006095)(93001095)(10201501046)(3002001)(3231311)(944501410)(52105095)(149027)(150027)(6041310)(20161123558120)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123562045)(20161123560045)(20161123564045)(201708071742011)(7699016);SRVR:BLUPR0301MB1569;BCL:0;PCL:0;RULEID:;SRVR:BLUPR0301MB1569; X-Forefront-PRVS: 077884B8B5 X-Forefront-Antispam-Report: SFV:NSPM;SFS:(10009020)(136003)(376002)(366004)(346002)(39860400002)(396003)(189003)(199004)(478600001)(33896004)(316002)(54906003)(16526019)(26005)(230700001)(50466002)(386003)(6506007)(8676002)(97736004)(186003)(50226002)(8936002)(25786009)(7696005)(52116002)(110136005)(53936002)(55016002)(9686003)(1076002)(23726003)(217873002)(14444005)(81166006)(5660300001)(47776003)(105586002)(66066001)(956004)(2906002)(106356001)(7736002)(81156014)(4326008)(486006)(72206003)(68736007)(6666003)(3846002)(6116002)(86362001)(476003)(305945005)(39210200001);DIR:OUT;SFP:1101;SCL:1;SRVR:BLUPR0301MB1569;H:xhacker.debian;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; Received-SPF: None (protection.outlook.com: synaptics.com does not designate permitted sender hosts) X-Microsoft-Exchange-Diagnostics: =?us-ascii?Q?1;BLUPR0301MB1569;23:nk4ihayggfty6stxjf2n+MXAVbxPuao4mEcC91+?= =?us-ascii?Q?eWr6RpMmDf93cMiw94ct0gs/qVexI4MJ+FYEJL/MHCr/zqt6Io5RPRtoTbes?= =?us-ascii?Q?SdG98rPjAyil+blTSRIge/gxz0N1MF1t2w5AdJrxwRR2D5gVst69coYliue6?= =?us-ascii?Q?H/iylx91DsS6lRx55VwIHAXvnWAvW6walLKr2K1FQgpFbyagntpIXnBDYCn8?= =?us-ascii?Q?afNK/qHVYyxrbP5w8Pw5Mkn2Rt6k92oa8aB6jkNcL2nfZpEVhjOYexatDgy7?= =?us-ascii?Q?rZnwfalN+AwOuIyE8spuCI4wnYqQyTX8iM0tEF2wn4u0dYpjn4z7/1dVHnR+?= =?us-ascii?Q?tEq2YwBRObBYr1J7dbL6cVEDQ16Qs0Z2spjXzWXjMsaXfjV1xTgIcw3sLAuK?= =?us-ascii?Q?xlqRGWVz04B99XaMcM5A1q3le2VeyOX8Z5FUJBWbE/Hjow7KAEqzfbhiWKn4?= =?us-ascii?Q?iqxgqGrX5KYMP4wd0wQbvoh1/eldN8SphgUCLa/3J5+ba5fWrovOnSIMAQrs?= =?us-ascii?Q?G9T3yaFjCUgZgfQnLaLnt7YsfMcKt5113Y4ddrEIugfkZFJri/uAc2HXPv2N?= =?us-ascii?Q?tiDrloqz+yG7PLEiQuVqB76GYUe5NR5bela2tF9by3QrjIHAHi93wUwfeRZ4?= =?us-ascii?Q?erTioj/W97gcWvhxmha+4WQHjNY4xoUh2jvAihqX49lSgU13/0ZlP7MVVqqO?= =?us-ascii?Q?SKAUc/XuU/KvkWO1/2dA95EviuEU+PogEIiHoiXHXppPubZHoqsIbXlnny/G?= =?us-ascii?Q?6LbcIBjBl+g9wZ3Fnog5C/NvCR0vhmnwd92Rp7BZLiGuKRbpEo1//K78QNEz?= =?us-ascii?Q?Y1id2KkwIAZczW/U9f1RbIIhDceH0rn1Hty0Oshi9+cs1mGnB7wzJjZCvMQZ?= =?us-ascii?Q?9WVVej7PnllgCzF0eA8FTlOdwJroWzf1fR7Voi+yhmvrNAblGYgzXWovOIY/?= =?us-ascii?Q?NBUDIPj4ANmgfA+itGyYOo7InAXl0Owh7bhxGrahlvLsWJP59ENATpbhDwxG?= =?us-ascii?Q?YkgF/E2tTqs4XkLTVowoJXLy2UeXzQ9XyHQ1UIAwSFR/8aufT9V0QzkiMzgR?= =?us-ascii?Q?gftCi/s6amuGe10IF0+2jowgL0FWio860/xWrbMhBJE3T8RV7qpzAeCh0dYK?= =?us-ascii?Q?yDG4kgItoN4wj+P0IRGhRebD8/z/OO/BBoFQCgF3RAoNZxamE6uxTB3Cnbpw?= =?us-ascii?Q?Y+g3JfbJUN16eUIgbKBv6Ef+n4m84FmXz8fVKStubsWC305wGYbiXlfaBtw?= =?us-ascii?Q?=3D=3D?= X-Microsoft-Antispam-Message-Info: gmmP8CqW3kzb4HQFT2Q5QqqDh+R+TZML1N3WUx/LfckoUk+BaYmD1dCtTdv1/8Alq13aUYi+ogYF29FUeXgxS7Cg2otjAgZTf+ByHyh99yASCDikfy1RA/Rv4e1bE6jF/VoaxSJPN+go2Bj9j4LozbG8bMsf/iRT55TktbvqZlWOKmdnC8rq9dfOumRKUy1Men2Cbgku1lPzscmyiEeE4fA1K85PzV8leFx/sKJ1iaYOOdVPjzFDJakaFFtJ4mbdQsOse7sQwl4dtP4Go6MN8QedIFUsrv4gtG5VhkGVBPE+mZKQlyrlRxOtowrPcqksAnId+wZe8MxyGFqARpXTIGXDkDpcOP+C5dGdhGNYsEo= X-Microsoft-Exchange-Diagnostics: 1;BLUPR0301MB1569;6:8tTlfKzxJ0LHO9O4itw8xVFeyTkN1urY6pc3ANNsTD6Nc+7EvPD6Vd3/U+/BC8eRBUV+kA0eRCWWljPySQeDyL7YfBqfrcLBl0BGka5gX0ypuMvyQkIvMAf2uCNOZvoY4FDbPWATAXP+724bFgYs2cW3bD/XHQYGGtyxVHJ22dMWzzyNbqkJ61FC+O7nZFRjbxxAV+tsHKFcTdRgliXRcXfFPQ+/QOxXy5FVgvhYINRAUPNmlmdadSqOFmfe45ELU7RO7njnK+HJOx7MbOxCe6UtISoowQL68ev1FsnBQhBTTvk6XtmmbmYgO/toqx/k6mMGdVt7OJJ/kQ+0nRe9bfIyZLSC8GgNxw0b+slX3DvxxI2DcEeH8IZMTf0mZOyy5CauMZt8DyMI5loxC5H8S4yC9Ykb6a2dzt5lU/TEWwu+Wvw/z/8nXbDexVyun5stfE8k1rb9mcFyOSvV5xX9BQ==;5:fKX5x0bUONBxcJFmbx8ILulu+xOdywlxUgdNmVmUnl1C/SZ5jkRO5e270PFpfdnj6WjZkS38ABCdr28IrtSxQmbZU7312wnyujUHxKG1qJWjAnU239wTWbIBxvt7/iCtcX5yxmJNx5TL7yfwalUBfAc9y0rase0O5sItVz297fI=;7:e5UPPSRdERNWyPJpjiGAoNGqbidCvO7wGl/gOBPjHkuTfxOPxUvigmqe7GWlo8Xda3kEpwOgiMOv0L6Wj59equgmIIUlV7YMVaoEMU6qtdR467xq+yuqhvLukFQQ9x12vqgH6uqUgsiLdWm5QW6yYp3ejnBHIMHqk/UpAV9KVW0dOABvrWRCT5zQN4DBN/RqW4ajlAjRHOVUYcdMIj4T+pK3qClsGhHuiwSfcHKcTo0PQHMQ1CwcztpVNNpd3YEN SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-OriginatorOrg: synaptics.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2018 09:48:40.1784 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7e702f29-6c68-414a-1003-08d60ccb7019 X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 335d1fbc-2124-4173-9863-17e7051a2a0e X-MS-Exchange-Transport-CrossTenantHeadersStamped: BLUPR0301MB1569 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When using DMA, if the DMA addr spans 128MB boundary, we have to split the DMA transfer into two so that each one doesn't exceed the boundary. patch1 adds adma_table_cnt to struct sdhci_host so that driver can control the ADMA table count. patch2 introduces adma_write_desc() hook to struct sdhci_ops so that driver can override it. patch3 finally solves the 128MB boundary limitation. since v5: - use dma_get_required_mask() to calculate the extra adma_table_cnt since v4: - add Adrian's ack to patch 1 and patch 2 - address Adrian's comment -- if the boundary is fine, we have to return after writing dma desc once; adma_table_cnt updating could make use of the fact that it's already initialized by the common sdhci code, we just need to tune. since v3: - s/adma_table_num/adma_table_cnt - add comment to adma_table_cnt - make the exported function name without the _ - let sdhci_adma_write_desc() accept &desc param and set the new desc value since v2: - make use of "likely" to check (!len || BOUNDARY_OK(addr, len)) - explicitly include for SZ_128M since v1: - fix BOUNDARY_OK macro if addr+len is aligned to 128MB - use DIV_ROUND_UP to cal extra desc num - fix !len for dwcmshc_adma_write_desc() Jisheng Zhang (3): mmc: sdhci: add adma_table_cnt member to struct sdhci_host mmc: sdhci: introduce adma_write_desc() hook to struct sdhci_ops mmc: sdhci-of-dwcmshc: solve 128MB DMA boundary limitation drivers/mmc/host/sdhci-of-dwcmshc.c | 39 +++++++++++++++++++++ drivers/mmc/host/sdhci.c | 54 +++++++++++++++++------------ drivers/mmc/host/sdhci.h | 7 ++++ 3 files changed, 78 insertions(+), 22 deletions(-) -- 2.18.0