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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 C2FEDC5DF63 for ; Wed, 6 Nov 2019 09:34:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8C0BD2087E for ; Wed, 6 Nov 2019 09:34:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=marvell.com header.i=@marvell.com header.b="ZRPo+CIZ"; dkim=pass (1024-bit key) header.d=marvell.onmicrosoft.com header.i=@marvell.onmicrosoft.com header.b="WFe6L8/g" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731743AbfKFJdn (ORCPT ); Wed, 6 Nov 2019 04:33:43 -0500 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:12762 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731712AbfKFJdm (ORCPT ); Wed, 6 Nov 2019 04:33:42 -0500 Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xA69VKLT027217; Wed, 6 Nov 2019 01:33:35 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : references : in-reply-to : content-type : content-transfer-encoding : mime-version; s=pfpt0818; bh=1TFVM5ORM0P3zV7f/gRuhjY4rmk0XP4KnO4NIoEQzaY=; b=ZRPo+CIZ27YeUmJ/Ouuy5CeYGwxoGBPYNmP940FhSnsm0BA2TDANfIP2uIbmn3h3EpWH 0idcnf2+WG0qo0IdVMKvmu6oQtmvJCEmL2DMYPf84wj6bzw2jhqnParwQFOuFzsLod2a kC/uTyDZtTN0x/Q9d2R8riXStNo50lvsDXYxQbfZg86gskqV26z2JBn4hT1a3lAMBAOT sOWoRxcRNYW+Iiqi+NK6SBIJznp50LMLjC6ar6hSjcdCaL6SYpL477IhroFRBy7Tj09h VFkLG7qV5LdDcAzRBe1Di1+l98BiVEn/JgykKm+OktinURV1VrXdNUSMMz6ZdtpyuXft IA== Received: from sc-exch04.marvell.com ([199.233.58.184]) by mx0b-0016f401.pphosted.com with ESMTP id 2w19amyakg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Wed, 06 Nov 2019 01:33:35 -0800 Received: from SC-EXCH02.marvell.com (10.93.176.82) by SC-EXCH04.marvell.com (10.93.176.84) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Wed, 6 Nov 2019 01:33:33 -0800 Received: from NAM01-BN3-obe.outbound.protection.outlook.com (104.47.33.59) by SC-EXCH02.marvell.com (10.93.176.82) with Microsoft SMTP Server (TLS) id 15.0.1367.3 via Frontend Transport; Wed, 6 Nov 2019 01:33:32 -0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=AyNsS/MbNjE6/a+e1PMw+9rspZSx/ASi5mq8+0tlnbFwwbbpfJgMbpfXoZvgep2yWYW6CgMJBmCWC4PQfgvYwYJvqafFD0YoVhSD27kXh4jU4bZf+hFb55YNaQC2YMI1cZlvU0oQKoanmEZsPFq6fccb0U5ktsA1UFUvxCHiDxMwnSKlGj5gSC5KCsqlYk3qjcBclRY8Z4HInk/lyf5pWjKM+9bKKPeAvhFyOjC+GFD+oVQL9Bnqch9Z/gRfqkRX76KkAlX+s9fEPmbCFwQJpDqLTCPdKNe4HQDGVV2ObOdkzMFex66m2arRMl6jde6u9VoaPuz+dGBzk7QrBfxkNA== 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=1TFVM5ORM0P3zV7f/gRuhjY4rmk0XP4KnO4NIoEQzaY=; b=SsR7dGYN6XPG2pfbh8NDZVhhhGvikAyqlVCMv2IsYiuParLjunXmcea6rCIMiphQ/CfWQ1037Sl+tkCtO4MNQi4v4mPsG115QcnJnENzZfuUQ/UgnrrX4ihviyg/C50mWXNfeI2O2A38a0DMoPsThqC1Q4KB6o/J5KTujamTHoNUhUgBEu26+E1KKZ8J7V+pnQq2pQy7cQn0Mzex6kyRqmjFt+czuTUCWlc/eqW0/IoIpNMTn0wvqbg3otQHYSfu2uBVdKyDzheza1nLn8Yhlwf7RIy29J/3olbNvkSYinbeoXorr8cg9zUSC73XEdA3SP/jShNnm/fKP1PoDkpxbQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=marvell.com; dmarc=pass action=none header.from=marvell.com; dkim=pass header.d=marvell.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.onmicrosoft.com; s=selector2-marvell-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1TFVM5ORM0P3zV7f/gRuhjY4rmk0XP4KnO4NIoEQzaY=; b=WFe6L8/gYGyGOqseUvvSeMePrMQFHhpcAhJPc8XLoQpqGqKW1Y/dN+6e1h7XgNE0Kk6eyi8+VSJ/FQSAiAkqVnxcG8UJL7XahYB4gEvXZFnfukEKj3fez0uQ9ZkubmzGDGUhvOShZ8yqTcfHCdaDOvLfxXGecpfuoiG/290mo2k= Received: from MN2PR18MB3408.namprd18.prod.outlook.com (10.255.237.10) by MN2PR18MB3165.namprd18.prod.outlook.com (10.255.236.86) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2430.20; Wed, 6 Nov 2019 09:33:30 +0000 Received: from MN2PR18MB3408.namprd18.prod.outlook.com ([fe80::c4a:cf3c:f530:fba6]) by MN2PR18MB3408.namprd18.prod.outlook.com ([fe80::c4a:cf3c:f530:fba6%6]) with mapi id 15.20.2430.020; Wed, 6 Nov 2019 09:33:30 +0000 From: Robert Richter To: Borislav Petkov , Mauro Carvalho Chehab , Tony Luck , Jonathan Corbet CC: James Morse , Robert Richter , "linux-edac@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "Mauro Carvalho Chehab" , "linux-doc@vger.kernel.org" Subject: [PATCH v2 13/20] EDAC, Documentation: Describe CPER module definition and DIMM ranks Thread-Topic: [PATCH v2 13/20] EDAC, Documentation: Describe CPER module definition and DIMM ranks Thread-Index: AQHVlIU/GtvaA83eREuXj+Z4hz4EIg== Date: Wed, 6 Nov 2019 09:33:30 +0000 Message-ID: <20191106093239.25517-14-rrichter@marvell.com> References: <20191106093239.25517-1-rrichter@marvell.com> In-Reply-To: <20191106093239.25517-1-rrichter@marvell.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: HE1PR05CA0287.eurprd05.prod.outlook.com (2603:10a6:7:93::18) To MN2PR18MB3408.namprd18.prod.outlook.com (2603:10b6:208:165::10) x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.20.1 x-originating-ip: [31.208.96.227] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 2a1a2d69-357c-4a73-1fe3-08d7629c6238 x-ms-traffictypediagnostic: MN2PR18MB3165: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8273; x-forefront-prvs: 02135EB356 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(4636009)(366004)(396003)(376002)(39860400002)(346002)(136003)(199004)(189003)(52116002)(305945005)(6486002)(76176011)(71190400001)(71200400001)(256004)(11346002)(446003)(7736002)(14444005)(6436002)(4326008)(6512007)(66446008)(66556008)(66476007)(66946007)(64756008)(5660300002)(1076003)(476003)(6116002)(3846002)(110136005)(54906003)(36756003)(2906002)(8676002)(99286004)(81166006)(81156014)(316002)(8936002)(50226002)(486006)(6506007)(386003)(102836004)(66066001)(2616005)(86362001)(478600001)(25786009)(186003)(14454004)(26005);DIR:OUT;SFP:1101;SCL:1;SRVR:MN2PR18MB3165;H:MN2PR18MB3408.namprd18.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: marvell.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: BWEK9AYir7LdYl68B+5lxnEX0CZ2KWdV2Nr8JpI3QQoLXxTT2QZZPZClVwb6K+anG3W07PrvMjKlmVP/Usyyf1TfZf+ggQ40a+PeYR5aZMDhfAs0FMkZfaBaLggFTYtjhJWMkoEtZD3QASzPn/AWhIMGtCsfrdGg63HB+E1cLEKa+ck+jdeG393yZRkeRubD1z3uvdzEH5MjfqLDXvu/XzdMoHgDN2Um8ClvQkgbAlIAj/b03S87H5XL2GEmb19htuY7RDPtCnXRTSH2X4nXP2jobwpuHG3p0xlGpplF427KDJXB83vGDz+H5nNSpoASQUYJ04rzLvl6tO6x4LkWGqOXvM1Zoe10rgNLUwvo40TjXW0CnztpZDvuySfOx/Gv8+f2hE4g0qm4JYI/F08QaxRnP4IN1JX7q4Yl253QXvXLXnqjegVnyRCTyzeVvzbu Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 2a1a2d69-357c-4a73-1fe3-08d7629c6238 X-MS-Exchange-CrossTenant-originalarrivaltime: 06 Nov 2019 09:33:30.1788 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 70e1fb47-1155-421d-87fc-2e58f638b6e0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: jG5x9JpgnoT9WcWC8A9H04R3i0oXAxJAyP4NEZB62EzTrOB/zwfw6DGHm+H6mqjS34+KESnVVlkTsY2Pbh6sqQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR18MB3165 X-OriginatorOrg: marvell.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-11-06_02:2019-11-06,2019-11-06 signatures=0 Sender: linux-edac-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org Update on CPER DIMM naming convention and DIMM ranks. Signed-off-by: Robert Richter Reviewed-by: Mauro Carvalho Chehab --- Documentation/admin-guide/ras.rst | 31 +++++++++++++++++++------------ 1 file changed, 19 insertions(+), 12 deletions(-) diff --git a/Documentation/admin-guide/ras.rst b/Documentation/admin-guide/= ras.rst index 2b20f5f7380d..26e02a59f0f4 100644 --- a/Documentation/admin-guide/ras.rst +++ b/Documentation/admin-guide/ras.rst @@ -330,9 +330,12 @@ There can be multiple csrows and multiple channels. =20 .. [#f4] Nowadays, the term DIMM (Dual In-line Memory Module) is widely used to refer to a memory module, although there are other memory - packaging alternatives, like SO-DIMM, SIMM, etc. Along this document, - and inside the EDAC system, the term "dimm" is used for all memory - modules, even when they use a different kind of packaging. + packaging alternatives, like SO-DIMM, SIMM, etc. The UEFI + specification (Version 2.7) defines a memory module in the Common + Platform Error Record (CPER) section to be an SMBIOS Memory Device + (Type 17). Along this document, and inside the EDAC system, the term + "dimm" is used for all memory modules, even when they use a + different kind of packaging. =20 Memory controllers allow for several csrows, with 8 csrows being a typical value. Yet, the actual number of csrows depends on the layout of @@ -349,12 +352,14 @@ controllers. The following example will assume 2 chan= nels: | | ``ch0`` | ``ch1`` | +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D+ | ``csrow0`` | DIMM_A0 | DIMM_B0 | - +------------+ | | - | ``csrow1`` | | | + | | rank0 | rank0 | + +------------+ - | - | + | ``csrow1`` | rank1 | rank1 | +------------+-----------+-----------+ | ``csrow2`` | DIMM_A1 | DIMM_B1 | - +------------+ | | - | ``csrow3`` | | | + | | rank0 | rank0 | + +------------+ - | - | + | ``csrow3`` | rank1 | rank1 | +------------+-----------+-----------+ =20 In the above example, there are 4 physical slots on the motherboard @@ -374,11 +379,13 @@ which the memory DIMM is placed. Thus, when 1 DIMM is= placed in each Channel, the csrows cross both DIMMs. =20 Memory DIMMs come single or dual "ranked". A rank is a populated csrow. -Thus, 2 single ranked DIMMs, placed in slots DIMM_A0 and DIMM_B0 above -will have just one csrow (csrow0). csrow1 will be empty. On the other -hand, when 2 dual ranked DIMMs are similarly placed, then both csrow0 -and csrow1 will be populated. The pattern repeats itself for csrow2 and -csrow3. +In the example above 2 dual ranked DIMMs are similarly placed. Thus, +both csrow0 and csrow1 are populated. On the other hand, when 2 single +ranked DIMMs are placed in slots DIMM_A0 and DIMM_B0, then they will +have just one csrow (csrow0) and csrow1 will be empty. The pattern +repeats itself for csrow2 and csrow3. Also note that some memory +controller doesn't have any logic to identify the memory module, see +``rankX`` directories below. =20 The representation of the above is reflected in the directory tree in EDAC's sysfs interface. Starting in directory --=20 2.20.1