From patchwork Thu Apr 22 20:30:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sowjanya Komatineni X-Patchwork-Id: 425930 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,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 CB859C43611 for ; Thu, 22 Apr 2021 20:31:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 99C7E613DC for ; Thu, 22 Apr 2021 20:31:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239686AbhDVUbe (ORCPT ); Thu, 22 Apr 2021 16:31:34 -0400 Received: from mail-bn7nam10on2059.outbound.protection.outlook.com ([40.107.92.59]:27617 "EHLO NAM10-BN7-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S239587AbhDVUbd (ORCPT ); Thu, 22 Apr 2021 16:31:33 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=H/zYGp6RX8RGCGzDPwebJeUx7tH5EtKhXP+O+1/Dd553IC89N+mJovkqYpJuc6FRJmk6L9mHAFLre5ylk4kD6evzkEbDySyEfswfzICHfLJM2L2Y04zNeYf7cZDJo+0CkAzGddY8qNo781FFUH/ktrwD+GeDqgnBDx4R7pBAPXZaEYkKylAxRGbCOS5JAOtLB9FtW1hB4CcdzXY7tz/w2x7Dg6EodGMwHjiyflpGT8SNAxzlsFiAoGOmto+95kDr6spnPTGDiIvAmlE9IHot1ChXbCGjlNQFNlqfTY0eaQAG5Z+cl/wSRTKTziOohOZZ23McnG7Hy/gyJRhgbjwAvA== 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=865GoqnmwjzddJxjksRbmVcCiIohdzLb3zHx8OnYwtk=; b=GbRYnsKI5/iBaWceeS9ymeLdTFff8jXxswL+cw4CBk8T4u5GZs/gv/DjZoD5MokP5LrllnGdQ7bxAaszzyZ5Mfzk/8PrFoeEQxJ23BBArjVpQVg7TmLxg0HnYBZAZIAO8eUyzjrKt8tC7LSoxU9v+Oh4/XhMir8Vnje79jziOhUkUTFTsubzIGayo6nQ5evqyyEHcehRdX2ZwMnzpBWOAFWP5Un+FT3nL/CDALkO9/lpouK5vBSqKhdC/kaSCnDlKupPBG7+VqL2P66cwfh9YYVsG1GYFa2GC9FoeppgsIWuDXt4gaXpZ8RXdGqcQ1F9zhvWMCIVX71LXBfboRcaaQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.112.34) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=nvidia.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=865GoqnmwjzddJxjksRbmVcCiIohdzLb3zHx8OnYwtk=; b=HcsvxDUkmFEjggUL7O2fqmQIDcEHfebCqxxMGatFK0yZIICngpH5X+vzC2Z0yF2RLD0RuF7BGo2KSKCnGGF1DaDrqas3+0k8n1pgRzQNd2YaT3nFrrsxuMohdkm2ad5mdNV8blrMD2jrXfDoxKrX6PPAbh0jD1MfV+W+tYuYbKjDQDXtyG/n9MnnA4g+blw1Ov/UGFbnrBIjpH9NAkOqk47DbK3fVkpfJgcZQ/yf5k86DyykT7q8gQ2dFI4JOa+S3S2P+geto4wZZ73v1d3xfl1X7AHPNhI+wLQ5OAFB8F9sbH+FFScJh36Vov5DfdltijmQao/WnNUSWbuoQd9sag== Received: from MWHPR01CA0034.prod.exchangelabs.com (2603:10b6:300:101::20) by CO6PR12MB5393.namprd12.prod.outlook.com (2603:10b6:5:356::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4065.22; Thu, 22 Apr 2021 20:30:56 +0000 Received: from CO1NAM11FT006.eop-nam11.prod.protection.outlook.com (2603:10b6:300:101:cafe::4c) by MWHPR01CA0034.outlook.office365.com (2603:10b6:300:101::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4065.21 via Frontend Transport; Thu, 22 Apr 2021 20:30:56 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.112.34) smtp.mailfrom=nvidia.com; vger.kernel.org; dkim=none (message not signed) header.d=none; vger.kernel.org; dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.112.34 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.112.34; helo=mail.nvidia.com; Received: from mail.nvidia.com (216.228.112.34) by CO1NAM11FT006.mail.protection.outlook.com (10.13.174.246) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.4065.21 via Frontend Transport; Thu, 22 Apr 2021 20:30:56 +0000 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 22 Apr 2021 20:30:55 +0000 Received: from skomatineni-linux.nvidia.com (172.20.145.6) by mail.nvidia.com (172.20.187.10) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 22 Apr 2021 20:30:55 +0000 From: Sowjanya Komatineni To: , , , , , , , CC: , , , , , , , Subject: [RFC PATCH 3/4] cpuidle: psci: pass state idle time before state enter callback Date: Thu, 22 Apr 2021 13:30:47 -0700 Message-ID: <1619123448-10138-4-git-send-email-skomatineni@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1619123448-10138-1-git-send-email-skomatineni@nvidia.com> References: <1619123448-10138-1-git-send-email-skomatineni@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ca233226-44e0-4ab5-c21b-08d905cd8897 X-MS-TrafficTypeDiagnostic: CO6PR12MB5393: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6108; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.112.34; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:schybrid03.nvidia.com; CAT:NONE; SFS:(4636009)(346002)(39860400002)(376002)(396003)(136003)(36840700001)(46966006)(8676002)(8936002)(54906003)(7696005)(2906002)(47076005)(36756003)(7416002)(110136005)(4326008)(316002)(70206006)(186003)(478600001)(26005)(426003)(2616005)(336012)(86362001)(5660300002)(7636003)(70586007)(36906005)(82740400003)(6666004)(36860700001)(356005)(83380400001)(82310400003); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Apr 2021 20:30:56.6498 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ca233226-44e0-4ab5-c21b-08d905cd8897 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.112.34]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT006.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO6PR12MB5393 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Some platforms use separate CPU firmware to handle all state transition decisions and may need runtime state idle time of the target state it is going to enter. This patch calls set_state_idle_time psci operation callback to pass the state idle time to TF-A through PSCI before calling psci_enter_state. Signed-off-by: Sowjanya Komatineni --- drivers/cpuidle/cpuidle-psci.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/cpuidle/cpuidle-psci.c b/drivers/cpuidle/cpuidle-psci.c index b51b5df..22a5003 100644 --- a/drivers/cpuidle/cpuidle-psci.c +++ b/drivers/cpuidle/cpuidle-psci.c @@ -151,6 +151,17 @@ static int psci_enter_idle_state(struct cpuidle_device *dev, { u32 *state = __this_cpu_read(psci_cpuidle_data.psci_states); + /* + * Some platforms use separate CPU firmware running in background to + * handle state transition which may need runtime idle time of the + * corresponding state from kernel. + * So, pass the state idle time from kernel to TF-A firmware through + * PSCI. Platform specific TF-A firmware may update this to CPU + * firmware. + */ + if (idx) + psci_ops.set_state_idle_time(drv->states[idx].idle_time); + return psci_enter_state(idx, state[idx]); }