From patchwork Wed Nov 6 09:33:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Richter X-Patchwork-Id: 178648 Delivered-To: patch@linaro.org Received: by 2002:a92:38d5:0:0:0:0:0 with SMTP id g82csp347689ilf; Wed, 6 Nov 2019 01:33:49 -0800 (PST) X-Google-Smtp-Source: APXvYqwRBAaxQYa8IWNzYRnCilQOjNG0rnqqX9r6YvvYbXi6pGG1xZ8mg4yMCMbae11R5OIC+h+w X-Received: by 2002:a17:906:2cd2:: with SMTP id r18mr33840747ejr.282.1573032829704; Wed, 06 Nov 2019 01:33:49 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1573032829; cv=pass; d=google.com; s=arc-20160816; b=kLznnpDc53KtET6JVWlWKiapgL1u8qnIOhF5qyTZcZaejDaEFDhP0dT/btfc8eQ1aZ dOmM/PSM18xldEWLcr2yK0lr+RIMhIKfeWwziVT5RXaohUPv0AmI4KQ1jBy1tSgB83vx lE5DMTChi5cQMCQUa+rjuU+X3UVOL0l3S3Z6YMVeLuPLUsKQ4rMTfFTlj34yA0IwQFhy 1y38DUKxOoRoUxDurLvBJb7QwFNLVZrgMrhlHpZJEshwD0ReTtos8mIhuf261SOLy9S5 ykNMJPFAO5wHBGOmezsMe51+VtMoTTXtmr14hXIh1BOtckpFBtvIm9HjSBvCLx+2DuLl cJSA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :content-language:accept-language:in-reply-to:references:message-id :date:thread-index:thread-topic:subject:cc:to:from:dkim-signature :dkim-signature; bh=1TFVM5ORM0P3zV7f/gRuhjY4rmk0XP4KnO4NIoEQzaY=; b=T93yygXN4upRWBbH+VuAtaTUx69aoe5Q41bjMMTedTbQ5MG/1txavsBOTPoLyh65HT JdpcuBX5olbWOWrZytS3DRPAT/xVo5NVvq8pX7mIirUCCDMZxh0f23/lVDZFFXxv7tsP WFOlIYugNVoILUGF2GBvXZ9HTYDQvvV/4y2mW1BHDzdP7NH2MoCBIMIR05b3XlRbcGZO K/tOMne5mtCdJU8Ul9t3bhm/ozWItzabcRd9ywMK9RKf6q1po6DcbRs1qlVMFaF7eaSP +iM+dg1CACzi7Oypg//IXsGe1pevlVfYpa3t2NKEV0Yh+XR5LlgU1SD8pOkIaP8cuHt3 mfLg== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@marvell.com header.s=pfpt0818 header.b=ZRPo+CIZ; dkim=pass header.i=@marvell.onmicrosoft.com header.s=selector2-marvell-onmicrosoft-com header.b="WFe6L8/g"; arc=pass (i=1 spf=pass spfdomain=marvell.com dkim=pass dkdomain=marvell.com dmarc=pass fromdomain=marvell.com); spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=marvell.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d36si10472155ede.44.2019.11.06.01.33.49; Wed, 06 Nov 2019 01:33:49 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@marvell.com header.s=pfpt0818 header.b=ZRPo+CIZ; dkim=pass header.i=@marvell.onmicrosoft.com header.s=selector2-marvell-onmicrosoft-com header.b="WFe6L8/g"; arc=pass (i=1 spf=pass spfdomain=marvell.com dkim=pass dkdomain=marvell.com dmarc=pass fromdomain=marvell.com); spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=marvell.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731761AbfKFJdp (ORCPT + 26 others); Wed, 6 Nov 2019 04:33:45 -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 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-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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(-) -- 2.20.1 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. .. [#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. 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 channels: | | ``ch0`` | ``ch1`` | +============+===========+===========+ | ``csrow0`` | DIMM_A0 | DIMM_B0 | - +------------+ | | - | ``csrow1`` | | | + | | rank0 | rank0 | + +------------+ - | - | + | ``csrow1`` | rank1 | rank1 | +------------+-----------+-----------+ | ``csrow2`` | DIMM_A1 | DIMM_B1 | - +------------+ | | - | ``csrow3`` | | | + | | rank0 | rank0 | + +------------+ - | - | + | ``csrow3`` | rank1 | rank1 | +------------+-----------+-----------+ 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. 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. The representation of the above is reflected in the directory tree in EDAC's sysfs interface. Starting in directory