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=-3.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=no 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 45B9EC47257 for ; Mon, 4 May 2020 19:11:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1FF46206C0 for ; Mon, 4 May 2020 19:11:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=micron.com header.i=@micron.com header.b="HwqaS8XE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726937AbgEDTLH (ORCPT ); Mon, 4 May 2020 15:11:07 -0400 Received: from mail-eopbgr760057.outbound.protection.outlook.com ([40.107.76.57]:11975 "EHLO NAM02-CY1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725981AbgEDTLG (ORCPT ); Mon, 4 May 2020 15:11:06 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=QbntnqEZTK+etZ222zgoaWlSNbEQg5Hv2GK5GGMUQNNI5HKzIn9Eid6yMCI9hfaFZHLEb3/jECmcN86js3cnso8nmorPgR15royRvq2bNCXVD8t1pjuP2K1QzXD6H/pB/fZRFaLJu3/agHzzz7KZCPn+caYhxUBLquxgyJiA1CuSWOU/3EqPOu1OPBAL1WoZ9A0DFI4flEEPTGj78bQVVLjGwht+yYQRlbaolcU9L4EhHdnmbKpGRnLEdRCXk3twdoAzeHIczvmqXRnf5lmxQXbDOoJdvX5FREZxErpadlI7a0sUwcnAALI/nKfqUjN+dmp6ZQRBtJUSAkSnIRsBUQ== 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-SenderADCheck; bh=RyCCpK0TKLhVlFlvXBli3J6WOoqQBWv5aPsuuT8Bb9c=; b=Nl8ip+HWFIOSr4fgqLps1k7VK5aJEifxvXSYFyHPRinMls0CMQDb3tQ1P5eQ9eQGe7osT9DO5gUiaYDINluZyRdS+Mtq7S+zwDXo4j1gK40YnV5SSN4cAMfCN3lQVacGsPj4mLNgbPi/41gN3IdZPhKxM8N3BI49wTk0dmcodwtcCJq4/TN7d1T72DJKvXoY7Z7v01CCpZIqV2byUV/p38JNK7s9ScO6PwDD/g5hf7rNSazcIqU6TzjtPdCrJKOqne6LjBkT98Tsm0JrdodpvdDeMgsGj1qyKUtFMBy/HOtDIqv8Ss5jL3ksQAgvE6NomI2RDbmy2S2sZgcwuFLryA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=micron.com; dmarc=pass action=none header.from=micron.com; dkim=pass header.d=micron.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=micron.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=RyCCpK0TKLhVlFlvXBli3J6WOoqQBWv5aPsuuT8Bb9c=; b=HwqaS8XESxneOcbUslDJI60U7xc8P1Pgd6SpdC1OlgTxP6rDIxEqSPH7CiaLEh7f7iOp80W/SQbLPNMDMLXZZZZvZSFwhz+XoXXl8WJyO3Innu4CwBp1g//+4YRAlXAE651+D4sVJ2julpdxmq0icVFB2SKbyHWddh9yw/7mmuc= Received: from BN7PR08MB5684.namprd08.prod.outlook.com (2603:10b6:408:35::23) by BN7PR08MB4307.namprd08.prod.outlook.com (2603:10b6:406:fb::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2958.19; Mon, 4 May 2020 19:11:05 +0000 Received: from BN7PR08MB5684.namprd08.prod.outlook.com ([fe80::9ca2:4625:2b46:e45c]) by BN7PR08MB5684.namprd08.prod.outlook.com ([fe80::9ca2:4625:2b46:e45c%4]) with mapi id 15.20.2958.030; Mon, 4 May 2020 19:11:05 +0000 From: "Bean Huo (beanhuo)" To: Stanley Chu , "linux-scsi@vger.kernel.org" , "martin.petersen@oracle.com" , "avri.altman@wdc.com" , "alim.akhtar@samsung.com" , "jejb@linux.ibm.com" , "asutoshd@codeaurora.org" CC: "cang@codeaurora.org" , "matthias.bgg@gmail.com" , "bvanassche@acm.org" , "linux-mediatek@lists.infradead.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "kuohong.wang@mediatek.com" , "peter.wang@mediatek.com" , "chun-hung.wu@mediatek.com" , "andy.teng@mediatek.com" Subject: RE: [EXT] [PATCH v6 6/8] scsi: ufs: add LU Dedicated buffer mode support for WriteBooster Thread-Topic: [EXT] [PATCH v6 6/8] scsi: ufs: add LU Dedicated buffer mode support for WriteBooster Thread-Index: AQHWIiQ2yyElrXc68UCqlrbjQUtXkKiYSvrw Date: Mon, 4 May 2020 19:11:04 +0000 Message-ID: References: <20200504145622.13895-1-stanley.chu@mediatek.com> <20200504145622.13895-7-stanley.chu@mediatek.com> In-Reply-To: <20200504145622.13895-7-stanley.chu@mediatek.com> Accept-Language: en-150, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-dg-ref: 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 x-dg-rorf: true authentication-results: mediatek.com; dkim=none (message not signed) header.d=none;mediatek.com; dmarc=none action=none header.from=micron.com; x-originating-ip: [165.225.81.109] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: a2775ddc-97c5-4425-7e06-08d7f05ee4b8 x-ms-traffictypediagnostic: BN7PR08MB4307:|BN7PR08MB4307:|BN7PR08MB4307: x-microsoft-antispam-prvs: x-ms-exchange-transport-forked: True x-ms-oob-tlc-oobclassifiers: OLM:8273; x-forefront-prvs: 03932714EB x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 2bqdeiltOp9YzHpd+ZihbOsyU/P0RR3loM2gDhGZeujA65nirMvOYozK8qxCv+fr9m0Vj8cNmIk/zUPPw/Lf7fF7vT9eVnceyX9iFiIaX3mngfLDfcvY6jmJ0RfEU1B1KLCtQ0rohbkfaRcMN5MB58rGRjtocY0jg6QummEMfRPIrd2VUrfgc1x9idYBN3DOrbQbkpSH7A2ImHDUzRRzQxpFMrbIegJ4YRuuqsX4TYTRvf+tQpkWpMG3MW4nYdkriWsPxzASlGWr4MCjWuLHkqJeJSKBvGqO18QP0tb9c0ET7KP8dECq3xSsnFpXbZgLISTN0H6ul1dxcnbctOxSpdKsVpMiyGtf6Rl6PkrWvBZ2qhTOALSysKvsVN5DQ4bdDEt2hfpMza5bwlEyQQ1KrxX/pqMFiFFLE2eFYYdIdYnb3kxp76GvwG6lDRRJ8cTJ x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BN7PR08MB5684.namprd08.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(39860400002)(346002)(136003)(366004)(376002)(396003)(86362001)(8936002)(110136005)(54906003)(4326008)(8676002)(316002)(55016002)(9686003)(26005)(53546011)(7696005)(186003)(71200400001)(478600001)(55236004)(6506007)(64756008)(66556008)(66476007)(66446008)(66946007)(76116006)(52536014)(33656002)(5660300002)(7416002)(2906002);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata: 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: micron.com X-MS-Exchange-CrossTenant-Network-Message-Id: a2775ddc-97c5-4425-7e06-08d7f05ee4b8 X-MS-Exchange-CrossTenant-originalarrivaltime: 04 May 2020 19:11:05.0433 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f38a5ecd-2813-4862-b11b-ac1d563c806f X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 54vkRV4a88z2ge19tV+Hwj4NtZRTCCHEwHFX6EWK22jLUZJ0ZM4mLfdsZGcO7tuHc1ee8e4+UJYBcLnNv372Cg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN7PR08MB4307 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > From: Stanley Chu > Sent: Monday, May 4, 2020 4:56 PM > To: linux-scsi@vger.kernel.org; martin.petersen@oracle.com; > avri.altman@wdc.com; alim.akhtar@samsung.com; jejb@linux.ibm.com; > asutoshd@codeaurora.org > Cc: Bean Huo (beanhuo) ; cang@codeaurora.org; > matthias.bgg@gmail.com; bvanassche@acm.org; linux- > mediatek@lists.infradead.org; linux-arm-kernel@lists.infradead.org; linux= - > kernel@vger.kernel.org; kuohong.wang@mediatek.com; > peter.wang@mediatek.com; chun-hung.wu@mediatek.com; > andy.teng@mediatek.com; Stanley Chu > Subject: [EXT] [PATCH v6 6/8] scsi: ufs: add LU Dedicated buffer mode sup= port > for WriteBooster >=20 > According to UFS specification, there are two WriteBooster mode of > operations: "LU dedicated buffer" mode and "shared buffer" mode. > In the "LU dedicated buffer" mode, the WriteBooster Buffer is dedicated t= o a > logical unit. >=20 > If the device supports the "LU dedicated buffer" mode, this mode is confi= gured > by setting bWriteBoosterBufferType to 00h. The logical unit WriteBooster = Buffer > size is configured by setting the dLUNumWriteBoosterBufferAllocUnits fiel= d of > the related Unit Descriptor. Only a value greater than zero enables the > WriteBooster feature in the logical unit. >=20 > Modify ufshcd_wb_probe() as above description to support LU Dedicated buf= fer > mode. >=20 > Note that according to UFS 3.1 specification, the valid value of > bDeviceMaxWriteBoosterLUs parameter in Geometry Descriptor is 1, which > means at most one LUN can have WriteBooster buffer in "LU dedicated buffe= r > mode". Therefore this patch supports only one LUN with WriteBooster enabl= ed. > All WriteBooster related sysfs nodes are specifically mapped to the LUN w= ith > WriteBooster enabled in LU Dedicated buffer mode. >=20 > Signed-off-by: Stanley Chu > Reviewed-by: Avri Altman Reviewed-by: Bean Huo