From patchwork Tue Mar 8 14:40:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shuai Xue X-Patchwork-Id: 549875 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 44E48C433F5 for ; Tue, 8 Mar 2022 14:41:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347597AbiCHOm2 (ORCPT ); Tue, 8 Mar 2022 09:42:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347613AbiCHOmZ (ORCPT ); Tue, 8 Mar 2022 09:42:25 -0500 Received: from out30-131.freemail.mail.aliyun.com (out30-131.freemail.mail.aliyun.com [115.124.30.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F7E63968C; Tue, 8 Mar 2022 06:41:26 -0800 (PST) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R181e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e01424; MF=xueshuai@linux.alibaba.com; NM=1; PH=DS; RN=12; SR=0; TI=SMTPD_---0V6f6D7h_1646750476; Received: from localhost.localdomain(mailfrom:xueshuai@linux.alibaba.com fp:SMTPD_---0V6f6D7h_1646750476) by smtp.aliyun-inc.com(127.0.0.1); Tue, 08 Mar 2022 22:41:22 +0800 From: Shuai Xue To: bp@alien8.de, rric@kernel.org Cc: mchehab@kernel.org, tony.luck@intel.com, james.morse@arm.com, ardb@kernel.org, linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, xueshuai@linux.alibaba.com, zhangliguang@linux.alibaba.com, zhuo.song@linux.alibaba.com Subject: [PATCH v7 2/3] EDAC/ghes: Unify CPER memory error location reporting Date: Tue, 8 Mar 2022 22:40:52 +0800 Message-Id: <20220308144053.49090-3-xueshuai@linux.alibaba.com> X-Mailer: git-send-email 2.30.1 (Apple Git-130) In-Reply-To: <20211210134019.28536-1-xueshuai@linux.alibaba.com> References: <20211210134019.28536-1-xueshuai@linux.alibaba.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org Switch the GHES EDAC memory error reporting functions to use the common CPER ones and get rid of code duplication. [ bp: - rewrite commit message, remove useless text - rip out useless reformatting - align function params on the opening brace - rename function to a more descriptive name - drop useless function exports - handle buffer lengths properly when printing other detail - remove useless casting ] Signed-off-by: Shuai Xue Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/20220303122626.99740-3-xueshuai@linux.alibaba.com --- drivers/edac/Kconfig | 1 + drivers/edac/ghes_edac.c | 200 +++++++----------------------------- drivers/firmware/efi/cper.c | 4 +- include/linux/cper.h | 2 + 4 files changed, 42 insertions(+), 165 deletions(-) diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig index 58ab63642e72..23f11554f400 100644 --- a/drivers/edac/Kconfig +++ b/drivers/edac/Kconfig @@ -55,6 +55,7 @@ config EDAC_DECODE_MCE config EDAC_GHES bool "Output ACPI APEI/GHES BIOS detected errors via EDAC" depends on ACPI_APEI_GHES && (EDAC=y) + select UEFI_CPER help Not all machines support hardware-driven error report. Some of those provide a BIOS-driven error report mechanism via ACPI, using the diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c index 6d1ddecbf0da..2805d5610300 100644 --- a/drivers/edac/ghes_edac.c +++ b/drivers/edac/ghes_edac.c @@ -15,11 +15,13 @@ #include "edac_module.h" #include +#define OTHER_DETAIL_LEN 400 + struct ghes_pvt { struct mem_ctl_info *mci; /* Buffers for the error handling routine */ - char other_detail[400]; + char other_detail[OTHER_DETAIL_LEN]; char msg[80]; }; @@ -235,8 +237,34 @@ static void ghes_scan_system(void) system_scanned = true; } +static int print_mem_error_other_detail(const struct cper_sec_mem_err *mem, char *msg, + const char *location, unsigned int len) +{ + u32 n; + + if (!msg) + return 0; + + n = 0; + len -= 1; + + n += scnprintf(msg + n, len - n, "APEI location: %s ", location); + + if (!(mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)) + goto out; + + n += scnprintf(msg + n, len - n, "status(0x%016llx): ", mem->error_status); + n += scnprintf(msg + n, len - n, "%s ", cper_mem_err_status_str(mem->error_status)); + +out: + msg[n] = '\0'; + + return n; +} + void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err) { + struct cper_mem_err_compact cmem; struct edac_raw_error_desc *e; struct mem_ctl_info *mci; struct ghes_pvt *pvt; @@ -292,60 +320,10 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err) /* Error type, mapped on e->msg */ if (mem_err->validation_bits & CPER_MEM_VALID_ERROR_TYPE) { + u8 etype = mem_err->error_type; + p = pvt->msg; - switch (mem_err->error_type) { - case 0: - p += sprintf(p, "Unknown"); - break; - case 1: - p += sprintf(p, "No error"); - break; - case 2: - p += sprintf(p, "Single-bit ECC"); - break; - case 3: - p += sprintf(p, "Multi-bit ECC"); - break; - case 4: - p += sprintf(p, "Single-symbol ChipKill ECC"); - break; - case 5: - p += sprintf(p, "Multi-symbol ChipKill ECC"); - break; - case 6: - p += sprintf(p, "Master abort"); - break; - case 7: - p += sprintf(p, "Target abort"); - break; - case 8: - p += sprintf(p, "Parity Error"); - break; - case 9: - p += sprintf(p, "Watchdog timeout"); - break; - case 10: - p += sprintf(p, "Invalid address"); - break; - case 11: - p += sprintf(p, "Mirror Broken"); - break; - case 12: - p += sprintf(p, "Memory Sparing"); - break; - case 13: - p += sprintf(p, "Scrub corrected error"); - break; - case 14: - p += sprintf(p, "Scrub uncorrected error"); - break; - case 15: - p += sprintf(p, "Physical Memory Map-out event"); - break; - default: - p += sprintf(p, "reserved error (%d)", - mem_err->error_type); - } + p += snprintf(p, sizeof(pvt->msg), "%s", cper_mem_err_type_str(etype)); } else { strcpy(pvt->msg, "unknown error"); } @@ -362,52 +340,19 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err) /* Memory error location, mapped on e->location */ p = e->location; - if (mem_err->validation_bits & CPER_MEM_VALID_NODE) - p += sprintf(p, "node:%d ", mem_err->node); - if (mem_err->validation_bits & CPER_MEM_VALID_CARD) - p += sprintf(p, "card:%d ", mem_err->card); - if (mem_err->validation_bits & CPER_MEM_VALID_MODULE) - p += sprintf(p, "module:%d ", mem_err->module); - if (mem_err->validation_bits & CPER_MEM_VALID_RANK_NUMBER) - p += sprintf(p, "rank:%d ", mem_err->rank); - if (mem_err->validation_bits & CPER_MEM_VALID_BANK) - p += sprintf(p, "bank:%d ", mem_err->bank); - if (mem_err->validation_bits & CPER_MEM_VALID_BANK_GROUP) - p += sprintf(p, "bank_group:%d ", - mem_err->bank >> CPER_MEM_BANK_GROUP_SHIFT); - if (mem_err->validation_bits & CPER_MEM_VALID_BANK_ADDRESS) - p += sprintf(p, "bank_address:%d ", - mem_err->bank & CPER_MEM_BANK_ADDRESS_MASK); - if (mem_err->validation_bits & (CPER_MEM_VALID_ROW | CPER_MEM_VALID_ROW_EXT)) { - u32 row = mem_err->row; - - row |= cper_get_mem_extension(mem_err->validation_bits, mem_err->extended); - p += sprintf(p, "row:%d ", row); - } - if (mem_err->validation_bits & CPER_MEM_VALID_COLUMN) - p += sprintf(p, "col:%d ", mem_err->column); - if (mem_err->validation_bits & CPER_MEM_VALID_BIT_POSITION) - p += sprintf(p, "bit_pos:%d ", mem_err->bit_pos); + cper_mem_err_pack(mem_err, &cmem); + p += cper_mem_err_location(&cmem, p); + if (mem_err->validation_bits & CPER_MEM_VALID_MODULE_HANDLE) { - const char *bank = NULL, *device = NULL; struct dimm_info *dimm; - dmi_memdev_name(mem_err->mem_dev_handle, &bank, &device); - if (bank != NULL && device != NULL) - p += sprintf(p, "DIMM location:%s %s ", bank, device); - else - p += sprintf(p, "DIMM DMI handle: 0x%.4x ", - mem_err->mem_dev_handle); - + p += cper_dimm_err_location(&cmem, p); dimm = find_dimm_by_handle(mci, mem_err->mem_dev_handle); if (dimm) { e->top_layer = dimm->idx; strcpy(e->label, dimm->label); } } - if (mem_err->validation_bits & CPER_MEM_VALID_CHIP_ID) - p += sprintf(p, "chipID: %d ", - mem_err->extended >> CPER_MEM_CHIP_ID_SHIFT); if (p > e->location) *(p - 1) = '\0'; @@ -416,78 +361,7 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err) /* All other fields are mapped on e->other_detail */ p = pvt->other_detail; - p += snprintf(p, sizeof(pvt->other_detail), - "APEI location: %s ", e->location); - if (mem_err->validation_bits & CPER_MEM_VALID_ERROR_STATUS) { - u64 status = mem_err->error_status; - - p += sprintf(p, "status(0x%016llx): ", (long long)status); - switch ((status >> 8) & 0xff) { - case 1: - p += sprintf(p, "Error detected internal to the component "); - break; - case 16: - p += sprintf(p, "Error detected in the bus "); - break; - case 4: - p += sprintf(p, "Storage error in DRAM memory "); - break; - case 5: - p += sprintf(p, "Storage error in TLB "); - break; - case 6: - p += sprintf(p, "Storage error in cache "); - break; - case 7: - p += sprintf(p, "Error in one or more functional units "); - break; - case 8: - p += sprintf(p, "component failed self test "); - break; - case 9: - p += sprintf(p, "Overflow or undervalue of internal queue "); - break; - case 17: - p += sprintf(p, "Virtual address not found on IO-TLB or IO-PDIR "); - break; - case 18: - p += sprintf(p, "Improper access error "); - break; - case 19: - p += sprintf(p, "Access to a memory address which is not mapped to any component "); - break; - case 20: - p += sprintf(p, "Loss of Lockstep "); - break; - case 21: - p += sprintf(p, "Response not associated with a request "); - break; - case 22: - p += sprintf(p, "Bus parity error - must also set the A, C, or D Bits "); - break; - case 23: - p += sprintf(p, "Detection of a PATH_ERROR "); - break; - case 25: - p += sprintf(p, "Bus operation timeout "); - break; - case 26: - p += sprintf(p, "A read was issued to data that has been poisoned "); - break; - default: - p += sprintf(p, "reserved "); - break; - } - } - if (mem_err->validation_bits & CPER_MEM_VALID_REQUESTOR_ID) - p += sprintf(p, "requestorID: 0x%016llx ", - (long long)mem_err->requestor_id); - if (mem_err->validation_bits & CPER_MEM_VALID_RESPONDER_ID) - p += sprintf(p, "responderID: 0x%016llx ", - (long long)mem_err->responder_id); - if (mem_err->validation_bits & CPER_MEM_VALID_TARGET_ID) - p += sprintf(p, "targetID: 0x%016llx ", - (long long)mem_err->responder_id); + p += print_mem_error_other_detail(mem_err, p, e->location, OTHER_DETAIL_LEN); if (p > pvt->other_detail) *(p - 1) = '\0'; diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c index 34eeaa59f04a..215c778fb33c 100644 --- a/drivers/firmware/efi/cper.c +++ b/drivers/firmware/efi/cper.c @@ -237,7 +237,7 @@ const char *cper_mem_err_status_str(u64 status) } EXPORT_SYMBOL_GPL(cper_mem_err_status_str); -static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg) +int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg) { u32 len, n; @@ -291,7 +291,7 @@ static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg) return n; } -static int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg) +int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg) { u32 len, n; const char *bank = NULL, *device = NULL; diff --git a/include/linux/cper.h b/include/linux/cper.h index 5b1dd27b317d..eacb7dd7b3af 100644 --- a/include/linux/cper.h +++ b/include/linux/cper.h @@ -569,5 +569,7 @@ void cper_print_proc_arm(const char *pfx, const struct cper_sec_proc_arm *proc); void cper_print_proc_ia(const char *pfx, const struct cper_sec_proc_ia *proc); +int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg); +int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg); #endif