From patchwork Tue Jun 8 15:42:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mario Limonciello X-Patchwork-Id: 12307267 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3634DC47082 for ; Tue, 8 Jun 2021 15:43:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2170860698 for ; Tue, 8 Jun 2021 15:43:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231261AbhFHPpV (ORCPT ); Tue, 8 Jun 2021 11:45:21 -0400 Received: from mail-bn7nam10on2055.outbound.protection.outlook.com ([40.107.92.55]:27087 "EHLO NAM10-BN7-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231192AbhFHPpT (ORCPT ); Tue, 8 Jun 2021 11:45:19 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=STHakTLJFTpXsuiQF49q06DP0bwcW6+fyxgxRJel7Ejtfbf/SlaiA8gA8Ro0cNuyqtZo3cK99bIVI90C1RU/MTlCmYwGQF2h6M32F+0hdAuESz8unYrkuM8pgGnPvRalWgVeutvh+FRHABJyk3zUNAS8i5bScAndofV/6gAazoCyfi79VTxDNR+/O3y1mWjyfqCMxfVVCtzY8DX3MwlYFRjMRU2pN7W0qYa2rsOwvjDOcPAW/Qb2Y5gRfclYevCt+o9ss+5TxsozT16CWjNVqxwcbjkJ290SGT+jIc6+MFCSkjXgAhxju9ZGtqyukf5hceXMdrsRnr0FH+2F4RvteQ== 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=HzfPVorCkeSgU1msvO3JoSkWOp0y74wtXR8NKCXSfs4=; b=AopdCXwVLpx+ZazXf7OTpK/o6H4Xg76r5ZFMDexhbycFtezfBjRZfzKg2xlRfBCXd4LC7dWaoOIDgqASmkuux44JIF4H7o2jvdKn8hz1tbwxJVXAbic1lYNHmYqeMHScJprophmpNmAx/OLaimJWAjOn/xzXze/wApEvMaGH2oz3LHdrkXNFyqpbeywCxIESPMF6Kx+iTpKzpQcNFL0p//T/8qxKzRO4TDWZ7lE82Rs5S4IOUwrMzEeK/RnrLmB7XYR55F4omHtT+Ma/nsEamRGyxfDZMAKp0P0JR52D3/2j8Ym4+kbBl3/qvZ8ajbY8atYSIAY6KGkVKVUYm/ntRA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=HzfPVorCkeSgU1msvO3JoSkWOp0y74wtXR8NKCXSfs4=; b=e2LPvU81AEEFF/918v7sutK13e0hXVGNrsJJ9A3dxbtPCg5GZj7V3y6rHswB2JQHqcqvZSiowF8IAKCA2wwpULeF2elq3XmXfY6OSx8z9QUryVOHTKjhNFyel3zpK0Z9FRsJsUZ7AWwGnAHH0Ab3z3mI5upWDWxXulHmXDPKmrA= Authentication-Results: kernel.org; dkim=none (message not signed) header.d=none;kernel.org; dmarc=none action=none header.from=amd.com; Received: from SA0PR12MB4510.namprd12.prod.outlook.com (2603:10b6:806:94::8) by SN1PR12MB2447.namprd12.prod.outlook.com (2603:10b6:802:27::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4195.24; Tue, 8 Jun 2021 15:43:24 +0000 Received: from SA0PR12MB4510.namprd12.prod.outlook.com ([fe80::d51c:6137:77f2:5671]) by SA0PR12MB4510.namprd12.prod.outlook.com ([fe80::d51c:6137:77f2:5671%4]) with mapi id 15.20.4195.030; Tue, 8 Jun 2021 15:43:24 +0000 From: Mario Limonciello To: Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg , "Rafael J . Wysocki" Cc: linux-nvme@lists.infradead.org (open list:NVM EXPRESS DRIVER), linux-acpi@vger.kernel.org, rrangel@chromium.org, david.e.box@linux.intel.com, Shyam-sundar.S-k@amd.com, Nehal-bakulchandra.Shah@amd.com, Alexander.Deucher@amd.com, prike.liang@amd.com, Mario Limonciello Subject: [PATCH v7 1/2] ACPI: Move check for _DSD StorageD3Enable property to acpi Date: Tue, 8 Jun 2021 10:42:54 -0500 Message-Id: <20210608154255.8693-1-mario.limonciello@amd.com> X-Mailer: git-send-email 2.25.1 X-Originating-IP: [76.251.167.31] X-ClientProxiedBy: SA0PR11CA0140.namprd11.prod.outlook.com (2603:10b6:806:131::25) To SA0PR12MB4510.namprd12.prod.outlook.com (2603:10b6:806:94::8) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from AUS-LX-MLIMONCI.amd.com (76.251.167.31) by SA0PR11CA0140.namprd11.prod.outlook.com (2603:10b6:806:131::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4219.21 via Frontend Transport; Tue, 8 Jun 2021 15:43:23 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: fdfaeb91-24bc-417c-8ecb-08d92a942679 X-MS-TrafficTypeDiagnostic: SN1PR12MB2447: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2331; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SA0PR12MB4510.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(366004)(346002)(396003)(376002)(39860400002)(136003)(66476007)(8936002)(6486002)(1076003)(66946007)(66556008)(8676002)(966005)(52116002)(7696005)(26005)(4326008)(16526019)(186003)(478600001)(316002)(5660300002)(38100700002)(86362001)(110136005)(38350700002)(44832011)(83380400001)(2906002)(956004)(2616005)(36756003)(6666004)(45080400002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: fdfaeb91-24bc-417c-8ecb-08d92a942679 X-MS-Exchange-CrossTenant-AuthSource: SA0PR12MB4510.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Jun 2021 15:43:24.0574 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: nvw67UDzYIwurga8qrAYZYPs85iPN0+40KUx1te0lbpSbFeSh0qMsnoHwFijn1rHT7ZgEfUNVDbwK5Q9m9fARA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN1PR12MB2447 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Although first implemented for NVME, this check may be usable by other drivers as well. Microsoft's specification explicitly mentions that is may be usable by SATA and AHCI devices. Google also indicates that they have used this with SDHCI in a downstream kernel tree that a user can plug a storage device into. Link: https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/power-management-for-storage-hardware-devices-intro Suggested-by: Keith Busch CC: Shyam-sundar S-k CC: Alexander Deucher CC: Rafael J. Wysocki CC: Prike Liang Signed-off-by: Mario Limonciello Reviewed-by: Rafael J. Wysocki --- drivers/acpi/device_pm.c | 25 +++++++++++++++++++++++++ drivers/nvme/host/pci.c | 28 +--------------------------- include/linux/acpi.h | 5 +++++ 3 files changed, 31 insertions(+), 27 deletions(-) Changes from v4->v5: * Correct extra "Link:" word in commit message Changes from v5->v6: * Add in commit message tags from Raul, Rafael and Keith Changes from v6->v7: * Update kerneldoc comments per suggestsions. * Drop all Acked/Reviewed tags diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index d260bc1f3e6e..c45f2d76b67e 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -1340,4 +1340,29 @@ int acpi_dev_pm_attach(struct device *dev, bool power_on) return 1; } EXPORT_SYMBOL_GPL(acpi_dev_pm_attach); + +/** + * acpi_storage_d3 - Check if a storage device should use D3 in the suspend path + * @dev: Device to check + * + * Return %true if the platform firmware wants @dev to be programmed + * into D3hot or D3cold (if supported) in the suspend path, or %false + * when there is no specific preference. On some platforms, if this + * hint is ignored, @dev may remain unresponsive after suspending the + * platform as a whole. + */ +bool acpi_storage_d3(struct device *dev) +{ + struct acpi_device *adev = ACPI_COMPANION(dev); + u8 val; + + if (!adev) + return false; + if (fwnode_property_read_u8(acpi_fwnode_handle(adev), "StorageD3Enable", + &val)) + return false; + return val == 1; +} +EXPORT_SYMBOL_GPL(acpi_storage_d3); + #endif /* CONFIG_PM */ diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 3aa7245a505f..8fbc4c87a0d8 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -2828,32 +2828,6 @@ static unsigned long check_vendor_combination_bug(struct pci_dev *pdev) return 0; } -#ifdef CONFIG_ACPI -static bool nvme_acpi_storage_d3(struct pci_dev *dev) -{ - struct acpi_device *adev = ACPI_COMPANION(&dev->dev); - u8 val; - - /* - * Look for _DSD property specifying that the storage device on the port - * must use D3 to support deep platform power savings during - * suspend-to-idle. - */ - - if (!adev) - return false; - if (fwnode_property_read_u8(acpi_fwnode_handle(adev), "StorageD3Enable", - &val)) - return false; - return val == 1; -} -#else -static inline bool nvme_acpi_storage_d3(struct pci_dev *dev) -{ - return false; -} -#endif /* CONFIG_ACPI */ - static void nvme_async_probe(void *data, async_cookie_t cookie) { struct nvme_dev *dev = data; @@ -2903,7 +2877,7 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id) quirks |= check_vendor_combination_bug(pdev); - if (!noacpi && nvme_acpi_storage_d3(pdev)) { + if (!noacpi && acpi_storage_d3(&pdev->dev)) { /* * Some systems use a bios work around to ask for D3 on * platforms that support kernel managed suspend. diff --git a/include/linux/acpi.h b/include/linux/acpi.h index c60745f657e9..dd0dafd21e33 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -1004,6 +1004,7 @@ int acpi_dev_resume(struct device *dev); int acpi_subsys_runtime_suspend(struct device *dev); int acpi_subsys_runtime_resume(struct device *dev); int acpi_dev_pm_attach(struct device *dev, bool power_on); +bool acpi_storage_d3(struct device *dev); #else static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; } static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; } @@ -1011,6 +1012,10 @@ static inline int acpi_dev_pm_attach(struct device *dev, bool power_on) { return 0; } +static inline bool acpi_storage_d3(struct device *dev) +{ + return false; +} #endif #if defined(CONFIG_ACPI) && defined(CONFIG_PM_SLEEP)