From patchwork Wed May 28 07:39:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Nowicki X-Patchwork-Id: 4253321 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 3D111BF90C for ; Wed, 28 May 2014 07:41:40 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 489A1202C8 for ; Wed, 28 May 2014 07:41:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3AC5A202F2 for ; Wed, 28 May 2014 07:41:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932129AbaE1Hld (ORCPT ); Wed, 28 May 2014 03:41:33 -0400 Received: from mail-we0-f171.google.com ([74.125.82.171]:51163 "EHLO mail-we0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753019AbaE1Hjv (ORCPT ); Wed, 28 May 2014 03:39:51 -0400 Received: by mail-we0-f171.google.com with SMTP id w62so10904364wes.30 for ; Wed, 28 May 2014 00:39:49 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=wLr5CD5fPY13Tnvq+mohe+gPqlw881UgqbuyDweJAqo=; b=FcDP+lq2ON5E2xu4+avlvUaNeuqlZXBhgtc7JgqC54LawChQOafzg48RaSRo0qd9x1 f9ReuL2xtVwQYHb0Mivb/eF2nY+FEPwuxmPqBf14ml9b60rdmb8/hdC6VcPwufkE0jp9 ggEPiwdioGnYLAxNW87f/SoZA4+dKtOn2TEbCFJnpPbDtjn8A6jEAYOIwQkmVQWENxW5 ZC9Q+UIhf/If0Fq744i5n2TI4JXlGTX5B3Zjy989Sa9WbZRnRZWSqYQDQMI60tmMVQjW tpN7mNOgfGHOmNGTq4Zw1OrT7Ex9mJMT0C18gxrgw4RTx0v2TsRy7Jp6kAi2v7vNGNub tjAA== X-Gm-Message-State: ALoCoQl16tIfu7pTZeP388CnxqQU12VeyIpcIFLm9XI1JH3ZQuFyLA1dr7Df4Fm6cq7IxnF5ied9 X-Received: by 10.180.212.107 with SMTP id nj11mr46518469wic.40.1401262788719; Wed, 28 May 2014 00:39:48 -0700 (PDT) Received: from tn-HP3-PC.semihalf.com ([80.82.22.190]) by mx.google.com with ESMTPSA id ga10sm41135474wjb.23.2014.05.28.00.39.47 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 28 May 2014 00:39:47 -0700 (PDT) From: Tomasz Nowicki To: rjw@rjwysocki.net, lenb@kernel.org, tony.luck@intel.com, bp@alien8.de, m.chehab@samsung.com, bp@suse.de Cc: linux-edac@vger.kernel.org, x86@kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linaro-acpi@lists.linaro.org, Tomasz Nowicki Subject: [PATCH v2 1/5] apei, mce: Factor out APEI architecture specific MCE calls. Date: Wed, 28 May 2014 09:39:26 +0200 Message-Id: <1401262770-25343-2-git-send-email-tomasz.nowicki@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1401262770-25343-1-git-send-email-tomasz.nowicki@linaro.org> References: <1401262770-25343-1-git-send-email-tomasz.nowicki@linaro.org> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This commit abstracts MCE calls and provides weak corresponding default implementation for those architectures which do not need arch specific actions. Each platform willing to do additional architectural actions should provides desired function definition. It allows us to avoid wrap code into #ifdef in generic code and prevent new platform from introducing dummy stub function too. Initially, there are two APEI arch-specific calls: - apei_arch_enable_cmcff() - apei_arch_report_mem_error() Both interact with MCE driver for X86 architecture. Signed-off-by: Tomasz Nowicki --- arch/x86/kernel/acpi/Makefile | 1 + arch/x86/kernel/acpi/apei.c | 56 +++++++++++++++++++++++++++++++++++++++++ drivers/acpi/apei/apei-base.c | 13 ++++++++++ drivers/acpi/apei/ghes.c | 6 ++--- drivers/acpi/apei/hest.c | 26 +------------------ include/acpi/apei.h | 3 +++ 6 files changed, 76 insertions(+), 29 deletions(-) create mode 100644 arch/x86/kernel/acpi/apei.c diff --git a/arch/x86/kernel/acpi/Makefile b/arch/x86/kernel/acpi/Makefile index 163b225..3242e59 100644 --- a/arch/x86/kernel/acpi/Makefile +++ b/arch/x86/kernel/acpi/Makefile @@ -1,5 +1,6 @@ obj-$(CONFIG_ACPI) += boot.o obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_$(BITS).o +obj-$(CONFIG_ACPI_APEI) += apei.o ifneq ($(CONFIG_ACPI_PROCESSOR),) obj-y += cstate.o diff --git a/arch/x86/kernel/acpi/apei.c b/arch/x86/kernel/acpi/apei.c new file mode 100644 index 0000000..dca2852 --- /dev/null +++ b/arch/x86/kernel/acpi/apei.c @@ -0,0 +1,56 @@ +/* + * Arch-specific APEI-related functions. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include + +#include + +int apei_arch_enable_cmcff(struct acpi_hest_header *hest_hdr, void *data) +{ +#ifdef CONFIG_X86_MCE + int i; + struct acpi_hest_ia_corrected *cmc; + struct acpi_hest_ia_error_bank *mc_bank; + + if (hest_hdr->type != ACPI_HEST_TYPE_IA32_CORRECTED_CHECK) + return 0; + + cmc = (struct acpi_hest_ia_corrected *)hest_hdr; + if (!cmc->enabled) + return 0; + + /* + * We expect HEST to provide a list of MC banks that report errors + * in firmware first mode. Otherwise, return non-zero value to + * indicate that we are done parsing HEST. + */ + if (!(cmc->flags & ACPI_HEST_FIRMWARE_FIRST) || + !cmc->num_hardware_banks) + return 1; + + pr_info("HEST: Enabling Firmware First mode for corrected errors.\n"); + + mc_bank = (struct acpi_hest_ia_error_bank *)(cmc + 1); + for (i = 0; i < cmc->num_hardware_banks; i++, mc_bank++) + mce_disable_bank(mc_bank->bank_number); +#endif + return 1; +} + +void apei_arch_report_mem_error(int sev, struct cper_sec_mem_err *mem_err) +{ +#ifdef CONFIG_X86_MCE + apei_mce_report_mem_error(sev, mem_err); +#endif +} diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c index 8678dfe..4a11c1a 100644 --- a/drivers/acpi/apei/apei-base.c +++ b/drivers/acpi/apei/apei-base.c @@ -745,6 +745,19 @@ struct dentry *apei_get_debugfs_dir(void) } EXPORT_SYMBOL_GPL(apei_get_debugfs_dir); +int __weak apei_arch_enable_cmcff(struct acpi_hest_header *hest_hdr, + void *data) +{ + return 1; +} +EXPORT_SYMBOL_GPL(apei_arch_enable_cmcff); + +void __weak apei_arch_report_mem_error(int sev, + struct cper_sec_mem_err *mem_err) +{ +} +EXPORT_SYMBOL_GPL(apei_arch_report_mem_error); + int apei_osc_setup(void) { static u8 whea_uuid_str[] = "ed855e0c-6c90-47bf-a62a-26de0fc5ad5c"; diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index dab7cb7..e7dc5c6 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -49,7 +49,7 @@ #include #include -#include +#include #include #include @@ -455,9 +455,7 @@ static void ghes_do_proc(struct ghes *ghes, mem_err = (struct cper_sec_mem_err *)(gdata+1); ghes_edac_report_mem_error(ghes, sev, mem_err); -#ifdef CONFIG_X86_MCE - apei_mce_report_mem_error(sev, mem_err); -#endif + apei_arch_report_mem_error(sev, mem_err); ghes_handle_memory_failure(gdata, sev); } #ifdef CONFIG_ACPI_APEI_PCIEAER diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index f5e37f3..9084767 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -36,7 +36,6 @@ #include #include #include -#include #include "apei-internal.h" @@ -128,32 +127,9 @@ EXPORT_SYMBOL_GPL(apei_hest_parse); */ static int __init hest_parse_cmc(struct acpi_hest_header *hest_hdr, void *data) { -#ifdef CONFIG_X86_MCE - int i; - struct acpi_hest_ia_corrected *cmc; - struct acpi_hest_ia_error_bank *mc_bank; - - if (hest_hdr->type != ACPI_HEST_TYPE_IA32_CORRECTED_CHECK) - return 0; - - cmc = (struct acpi_hest_ia_corrected *)hest_hdr; - if (!cmc->enabled) + if (!apei_arch_enable_cmcff(hest_hdr, data)) return 0; - /* - * We expect HEST to provide a list of MC banks that report errors - * in firmware first mode. Otherwise, return non-zero value to - * indicate that we are done parsing HEST. - */ - if (!(cmc->flags & ACPI_HEST_FIRMWARE_FIRST) || !cmc->num_hardware_banks) - return 1; - - pr_info(HEST_PFX "Enabling Firmware First mode for corrected errors.\n"); - - mc_bank = (struct acpi_hest_ia_error_bank *)(cmc + 1); - for (i = 0; i < cmc->num_hardware_banks; i++, mc_bank++) - mce_disable_bank(mc_bank->bank_number); -#endif return 1; } diff --git a/include/acpi/apei.h b/include/acpi/apei.h index 04f349d..62b9d1c 100644 --- a/include/acpi/apei.h +++ b/include/acpi/apei.h @@ -42,5 +42,8 @@ ssize_t erst_read(u64 record_id, struct cper_record_header *record, size_t buflen); int erst_clear(u64 record_id); +int apei_arch_enable_cmcff(struct acpi_hest_header *hest_hdr, void *data); +void apei_arch_report_mem_error(int sev, struct cper_sec_mem_err *mem_err); + #endif #endif