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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1NAM11FT005.mail.protection.outlook.com (10.13.174.147) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5164.19 via Frontend Transport; Mon, 18 Apr 2022 17:44:59 +0000 Received: from yaz-ethanolx.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 18 Apr 2022 12:44:58 -0500 From: Yazen Ghannam To: CC: , , , , Yazen Ghannam Subject: [PATCH 3/3] EDAC/mce_amd: Add support for FRU Text in MCA Date: Mon, 18 Apr 2022 17:44:40 +0000 Message-ID: <20220418174440.334336-4-yazen.ghannam@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220418174440.334336-1-yazen.ghannam@amd.com> References: <20220418174440.334336-1-yazen.ghannam@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: f57f0323-bd48-4e83-1e2d-08da216328f3 X-MS-TrafficTypeDiagnostic: SA0PR12MB4574:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Apr 2022 17:44:59.6972 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f57f0323-bd48-4e83-1e2d-08da216328f3 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT005.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB4574 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org A new "FRU Text in MCA" feature is defined where the Field Replaceable Unit (FRU) Text for a device is represented by a string in the new MCA_SYND1 and MCA_SYND2 registers. This feature is supported per MCA bank, and it is advertised by the McaFruTextInMca bit (MCA_CONFIG[9]). The FRU Text is populated dynamically for each individual error state (MCA_STATUS, MCA_ADDR, et al.). This handles the case where an MCA bank covers multiple devices, for example, a Unified Memory Controller (UMC) bank that manages two DIMMs. Print the FRU Text string, if available, when decoding an MCA error. Signed-off-by: Yazen Ghannam --- drivers/edac/mce_amd.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c index 28b48c711fe0..3cacc3f22379 100644 --- a/drivers/edac/mce_amd.c +++ b/drivers/edac/mce_amd.c @@ -1235,6 +1235,7 @@ amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data) { struct mce *m = (struct mce *)data; unsigned int fam = x86_family(m->cpuid); + u64 mca_config = 0; int ecc; if (m->kflags & MCE_HANDLED_CEC) @@ -1254,11 +1255,10 @@ amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data) ((m->status & MCI_STATUS_PCC) ? "PCC" : "-")); if (boot_cpu_has(X86_FEATURE_SMCA)) { - u32 low, high; u32 addr = MSR_AMD64_SMCA_MCx_CONFIG(m->bank); - if (!rdmsr_safe(addr, &low, &high) && - (low & MCI_CONFIG_MCAX)) + if (!rdmsrl_safe_on_cpu(m->extcpu, addr, &mca_config) && + (mca_config & MCI_CONFIG_MCAX)) pr_cont("|%s", ((m->status & MCI_STATUS_TCC) ? "TCC" : "-")); pr_cont("|%s", ((m->status & MCI_STATUS_SYNDV) ? "SyndV" : "-")); @@ -1300,6 +1300,17 @@ amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data) pr_cont("\n"); decode_smca_error(m); + + if (mca_config & BIT(9)) { + char frutext[32]; + + memset(frutext, 0, sizeof(frutext)); + memcpy(&frutext[0], &m->synd1, 8); + memcpy(&frutext[8], &m->synd2, 8); + + pr_emerg(HW_ERR "FRU Text: %s\n", frutext); + } + goto err_code; } -- 2.25.1