From patchwork Thu Nov 10 17:58:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Yuan, Perry" X-Patchwork-Id: 18262 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp294800wru; Thu, 10 Nov 2022 10:08:32 -0800 (PST) X-Google-Smtp-Source: AA0mqf6tLzLGTYPChzDQZhjXXl6bWC7d8zf6b4bkkEkncRsqTHGyDb9D2S2OKa2frxFOL0yQ1nLU X-Received: by 2002:a17:906:f292:b0:7ae:8a69:a169 with SMTP id gu18-20020a170906f29200b007ae8a69a169mr2415542ejb.394.1668103712282; Thu, 10 Nov 2022 10:08:32 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1668103712; cv=pass; d=google.com; s=arc-20160816; b=Sty5T2oROeaPp+zrc2xuQxgCegI36/zskrvmmBAWVDhKWhXKtore/PR6XhA/wXwIHV Cnp2wm1HZsiwcSFGlkwakZW81+OFpS9dP1GD4UzxW44zB1lQr+qB4zK7HnbPq9srhLvS Vn5JXYX5rZQ1Kyjq1izRtX4izWfegmhN2gmlF7xNJU7eaJnXi4HVQSmx86zU5B7YrkJP mhWH+MPpp11R1TEEGDuEDaF/Yc8e3sjPe1CFX/IRLl1y6PEmz0Ta0/yiP9ZTxZvXmmE7 Mngu+PgWgCVS1eo7UX7pMn2y9o3QfrJdPYnEEl/PWtwavsHDOHarQXxFC0j9qqQlGnS1 /owA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=ahoQ6TafYVsvKiCzN5J76aLP+KQBCq70Wep5Trl7hpQ=; b=ebS85LdUhMOENq5Gd2yuiQ212rTXRBzwHcTCq0DEXr78xo7uRiQmQO6da7lHvzduho 9VVgBEmkdRzYOWr49Ei5sbK1z3L7ybyC1jfKhDSyE17/yjSQsclPOUUM5efDVdZQTv3/ IAcVPXVNXbintPuw7DEv9vdMXaMF0PAEZ6kWsUmdASbqyAFv2PyTKRWYAO2V0nnBjams juCvSBiOJHaSZYugD9nSoPrTubrR1/WX9t39ER5osafI2fa0oY1ssmAFMRPo9rP/GgMV E+EwtZlDaXjsk2DEh5mz9qRW3v94BIIrEZcQIfnGG71hCKWNx7frylmnHdX8cP3kawD1 6ItA== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=AHsbdfmA; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id y8-20020a056402358800b00461e582ef0fsi218756edc.381.2022.11.10.10.08.07; Thu, 10 Nov 2022 10:08:32 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=AHsbdfmA; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230505AbiKJSAg (ORCPT + 99 others); Thu, 10 Nov 2022 13:00:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42960 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231734AbiKJR77 (ORCPT ); Thu, 10 Nov 2022 12:59:59 -0500 Received: from NAM02-BN1-obe.outbound.protection.outlook.com (mail-bn1nam07on2083.outbound.protection.outlook.com [40.107.212.83]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54FC64D5C2; Thu, 10 Nov 2022 09:59:40 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=jf3rSWDOX/W/dM03s7VRmW97S93AV1zxRfrmeTUYRI5eK7L9wx6r36PR7umWgmEBBzBomMBurKVOTX1zKr1J4GYp8cxiFt66kGCJa9tETQcuYtfDcgqv2D8nKx49EXmefT43u7XLJWqIkj1Q+cGxiuKhQaqeEf1ymfpvX3NHGYoYW7CW6n468rE5vFsqfGp+UfYOVRzSgOgJfBMmJ2p+mG18epep/9xPNyMWWnoM/7dxs8JdmF5jM6kCsGl925cUsqBLYMedjY4r286cuJz4NUuKhoBuD5SLhjFDt1QdDuOjT9AWVGNwDP8AxEmoLd0KlqYBscpD1dpN8QbDcTF/mw== 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-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=ahoQ6TafYVsvKiCzN5J76aLP+KQBCq70Wep5Trl7hpQ=; b=Az9O+lEljWKloWY98dZtueafpP2n+t/eCqcUgK2IgJmLqXHYzxMgwZxyFqek4a4+fnY94H92NnUaa55NMi+WjDAXSJgcrCvAtQFhh7d4HD389O2YDls49dH4EyYzf+EYQxgLwgFTQSVKk77jzbTEZy9YDJWtJSREeeu7/1fK/NClfcuyQRzDoeF1GyeWyU1T40wEIGOnsIV6uiHEnGEvVs5Ij6v3sy1oXSy2X9RdnxBfAotvcgnmdJhYoZm07zSU6bN0fZ6i84TtUbGh5GNFOsuD3O/GbJylg2+Q6XnoWx71tdizHWIN9VswykD6V+WTqOHGxU1XfA9uXi+smHSC6w== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=intel.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); 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=ahoQ6TafYVsvKiCzN5J76aLP+KQBCq70Wep5Trl7hpQ=; b=AHsbdfmAuT53/zMskiHO5L43ZpKKTK+9/pn8jX6NNd7adSuF47q+KHoUB0LJQv9+xbYOLS8CU9emII3ENk4QkPD6CpRCh01ysiQtqS2Tw6f6PH7xkPgu1EbVx/XDCstGo+qDi5UMDQaYY2TLSSD3sAv6tL0Iodpq24o0axM3h2g= Received: from BN0PR02CA0055.namprd02.prod.outlook.com (2603:10b6:408:e5::30) by CH3PR12MB7498.namprd12.prod.outlook.com (2603:10b6:610:143::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5791.27; Thu, 10 Nov 2022 17:59:38 +0000 Received: from BN8NAM11FT107.eop-nam11.prod.protection.outlook.com (2603:10b6:408:e5:cafe::7d) by BN0PR02CA0055.outlook.office365.com (2603:10b6:408:e5::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5813.13 via Frontend Transport; Thu, 10 Nov 2022 17:59:37 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT107.mail.protection.outlook.com (10.13.176.149) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5813.12 via Frontend Transport; Thu, 10 Nov 2022 17:59:37 +0000 Received: from pyuan-Cloudripper.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Thu, 10 Nov 2022 11:59:30 -0600 From: Perry Yuan To: , , , CC: , , , , , , , , , Perry Yuan , "Mario Limonciello" Subject: [PATCH v4 6/9] cpufreq: amd-pstate: implement suspend and resume callbacks Date: Fri, 11 Nov 2022 01:58:44 +0800 Message-ID: <20221110175847.3098728-7-Perry.Yuan@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221110175847.3098728-1-Perry.Yuan@amd.com> References: <20221110175847.3098728-1-Perry.Yuan@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT107:EE_|CH3PR12MB7498:EE_ X-MS-Office365-Filtering-Correlation-Id: e976bcd5-4a7a-4634-5023-08dac3455530 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230022)(4636009)(136003)(376002)(346002)(39860400002)(396003)(451199015)(36840700001)(46966006)(40470700004)(41300700001)(70586007)(86362001)(5660300002)(70206006)(8676002)(4326008)(316002)(54906003)(8936002)(82740400003)(81166007)(36756003)(40480700001)(36860700001)(40460700003)(356005)(1076003)(83380400001)(7696005)(26005)(110136005)(6666004)(15650500001)(478600001)(82310400005)(2906002)(16526019)(186003)(2616005)(336012)(47076005)(426003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Nov 2022 17:59:37.5267 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e976bcd5-4a7a-4634-5023-08dac3455530 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT107.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7498 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749133518241659630?= X-GMAIL-MSGID: =?utf-8?q?1749133518241659630?= add suspend and resume support for the AMD processors by amd_pstate_epp driver instance. When the CPPC is suspended, EPP driver will set EPP profile to 'power' profile and set max/min perf to lowest perf value. When resume happens, it will restore the MSR registers with previous cached value. Reviewed-by: Mario Limonciello Signed-off-by: Perry Yuan --- drivers/cpufreq/amd-pstate.c | 40 ++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 9a9abb755a18..645706d65173 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -1261,6 +1261,44 @@ static int amd_pstate_epp_cpu_offline(struct cpufreq_policy *policy) return amd_pstate_cpu_offline(policy); } +static int amd_pstate_epp_suspend(struct cpufreq_policy *policy) +{ + struct amd_cpudata *cpudata = all_cpu_data[policy->cpu]; + int ret; + + /* avoid suspending when EPP is not enabled */ + if (!cppc_active) + return 0; + + /* set this flag to avoid setting core offline*/ + cpudata->suspended = true; + + /* disable CPPC in lowlevel firmware */ + ret = amd_pstate_enable(false); + if (ret) + pr_err("failed to suspend, return %d\n", ret); + + return 0; +} + +static int amd_pstate_epp_resume(struct cpufreq_policy *policy) +{ + struct amd_cpudata *cpudata = all_cpu_data[policy->cpu]; + + if (cpudata->suspended) { + mutex_lock(&amd_pstate_limits_lock); + + /* enable amd pstate from suspend state*/ + amd_pstate_epp_reenable(cpudata); + + mutex_unlock(&amd_pstate_limits_lock); + + cpudata->suspended = false; + } + + return 0; +} + static void amd_pstate_verify_cpu_policy(struct amd_cpudata *cpudata, struct cpufreq_policy_data *policy) { @@ -1297,6 +1335,8 @@ static struct cpufreq_driver amd_pstate_epp_driver = { .update_limits = amd_pstate_epp_update_limits, .offline = amd_pstate_epp_cpu_offline, .online = amd_pstate_epp_cpu_online, + .suspend = amd_pstate_epp_suspend, + .resume = amd_pstate_epp_resume, .name = "amd_pstate_epp", .attr = amd_pstate_epp_attr, };