From patchwork Mon Mar 12 18:24:28 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Luck X-Patchwork-Id: 10276985 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B22E1602BD for ; Mon, 12 Mar 2018 18:24:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9CD5728B38 for ; Mon, 12 Mar 2018 18:24:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9132628B4A; Mon, 12 Mar 2018 18:24:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5C18328B38 for ; Mon, 12 Mar 2018 18:24:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751359AbeCLSYd (ORCPT ); Mon, 12 Mar 2018 14:24:33 -0400 Received: from mga17.intel.com ([192.55.52.151]:16040 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751377AbeCLSYc (ORCPT ); Mon, 12 Mar 2018 14:24:32 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Mar 2018 11:24:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,462,1515484800"; d="scan'208";a="37537197" Received: from agluck-desk.sc.intel.com ([10.3.52.160]) by fmsmga001.fm.intel.com with ESMTP; 12 Mar 2018 11:24:31 -0700 From: Tony Luck To: Borislav Petkov Cc: Tony Luck , Borislav Petkov , Dan Williams , Jean Delvare , Len Brown , linux-acpi@vger.kernel.org, linux-nvdimm@lists.01.org, Mauro Carvalho Chehab , "Rafael J. Wysocki" , Qiuxu Zhuo , Aristeu Rozanski Subject: [PATCH 3/5] acpi, nfit: Add function to look up nvdimm device and provide SMBIOS handle Date: Mon, 12 Mar 2018 11:24:28 -0700 Message-Id: <20180312182430.10335-4-tony.luck@intel.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180312182430.10335-1-tony.luck@intel.com> References: <20180312182430.10335-1-tony.luck@intel.com> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP EDAC driver needs to look up attributes of NVDIMMs provided in SMBIOS. Provide a function that looks up an acpi_nfit_memory_map from a device handle (node/socket/mc/channel/dimm) and returns the SMBIOS handle. Also pass back the "flags" so we can see if the NVDIMM is OK. Acked-by: Dan Williams Signed-off-by: Tony Luck --- drivers/acpi/nfit/core.c | 27 +++++++++++++++++++++++++++ include/acpi/nfit.h | 18 ++++++++++++++++++ 2 files changed, 45 insertions(+) create mode 100644 include/acpi/nfit.h diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index bbe48ad20886..4d6eeb1793e6 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -23,6 +23,7 @@ #include #include #include +#include #include "nfit.h" /* @@ -690,6 +691,32 @@ static bool add_memdev(struct acpi_nfit_desc *acpi_desc, return true; } +int nfit_get_smbios_id(u32 device_handle, u16 *flags) +{ + struct acpi_nfit_memory_map *memdev; + struct acpi_nfit_desc *acpi_desc; + struct nfit_mem *nfit_mem; + + mutex_lock(&acpi_desc_lock); + list_for_each_entry(acpi_desc, &acpi_descs, list) { + mutex_lock(&acpi_desc->init_mutex); + list_for_each_entry(nfit_mem, &acpi_desc->dimms, list) { + memdev = __to_nfit_memdev(nfit_mem); + if (memdev->device_handle == device_handle) { + mutex_unlock(&acpi_desc->init_mutex); + mutex_unlock(&acpi_desc_lock); + *flags = memdev->flags; + return memdev->physical_id; + } + } + mutex_unlock(&acpi_desc->init_mutex); + } + mutex_unlock(&acpi_desc_lock); + + return -ENODEV; +} +EXPORT_SYMBOL_GPL(nfit_get_smbios_id); + /* * An implementation may provide a truncated control region if no block windows * are defined. diff --git a/include/acpi/nfit.h b/include/acpi/nfit.h new file mode 100644 index 000000000000..86ed07c1200d --- /dev/null +++ b/include/acpi/nfit.h @@ -0,0 +1,18 @@ +/* + * SPDX-License-Identifier: GPL-2.0 + * Copyright (C) 2018 Intel Corporation + */ + +#ifndef __ACPI_NFIT_H +#define __ACPI_NFIT_H + +#if IS_ENABLED(CONFIG_ACPI_NFIT) +int nfit_get_smbios_id(u32 device_handle, u16 *flags); +#else +static inline int nfit_get_smbios_id(u32 device_handle, u16 *flags) +{ + return -EOPNOTSUPP; +} +#endif + +#endif /* __ACPI_NFIT_H */