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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 CO1PEPF000044FA.mail.protection.outlook.com (10.167.241.200) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7228.0 via Frontend Transport; Fri, 19 Jan 2024 09:05:36 +0000 Received: from jasmine-meng.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 15.1.2507.34; Fri, 19 Jan 2024 03:05:29 -0600 From: Meng Li To: "Rafael J . Wysocki" , Borislav Petkov , Huang Rui CC: , , , , Shuah Khan , , "Nathan Fontenot" , Deepak Sharma , Alex Deucher , Mario Limonciello , Shimmer Huang , "Perry Yuan" , Xiaojian Du , Viresh Kumar , Borislav Petkov , "Oleksandr Natalenko" , Meng Li , Wyes Karny , Perry Yuan Subject: [PATCH V14 2/7] ACPI: CPPC: Add get the highest performance cppc control Date: Fri, 19 Jan 2024 17:04:57 +0800 Message-ID: <20240119090502.3869695-3-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240119090502.3869695-1-li.meng@amd.com> References: <20240119090502.3869695-1-li.meng@amd.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: CO1PEPF000044FA:EE_|CY8PR12MB7170:EE_ X-MS-Office365-Filtering-Correlation-Id: 7ff1bd3b-bdb3-4360-d980-08dc18cdcccf 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:(13230031)(4636009)(39860400002)(136003)(346002)(376002)(396003)(230922051799003)(1800799012)(82310400011)(64100799003)(186009)(451199024)(40470700004)(46966006)(36840700001)(40460700003)(40480700001)(356005)(41300700001)(110136005)(336012)(86362001)(36756003)(81166007)(16526019)(426003)(70206006)(36860700001)(6666004)(47076005)(2616005)(1076003)(966005)(478600001)(5660300002)(26005)(316002)(2906002)(70586007)(54906003)(82740400003)(8936002)(7696005)(4326008)(6636002)(7416002)(8676002)(15583001)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Jan 2024 09:05:36.1741 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7ff1bd3b-bdb3-4360-d980-08dc18cdcccf 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: CO1PEPF000044FA.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB7170 Add support for getting the highest performance to the generic CPPC driver. This enables downstream drivers such as amd-pstate to discover and use these values. Please refer to Chapter 8.4.6.1.1.1. Highest Performance of ACPI Specification 6.5 for details on continuous performance control of CPPC. Also see the Link below. Tested-by: Oleksandr Natalenko Reviewed-by: Mario Limonciello Reviewed-by: Wyes Karny Reviewed-by: Perry Yuan Acked-by: Huang Rui Signed-off-by: Meng Li Link: https://uefi.org/specs/ACPI/6.5/08_Processor_Configuration_and_Control.html?highlight=cppc#highest-performance --- drivers/acpi/cppc_acpi.c | 13 +++++++++++++ include/acpi/cppc_acpi.h | 5 +++++ 2 files changed, 18 insertions(+) diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index d155a86a8614..a50e70abdf19 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -1157,6 +1157,19 @@ int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf) return cppc_get_perf(cpunum, NOMINAL_PERF, nominal_perf); } +/** + * cppc_get_highest_perf - Get the highest performance register value. + * @cpunum: CPU from which to get highest performance. + * @highest_perf: Return address. + * + * Return: 0 for success, -EIO otherwise. + */ +int cppc_get_highest_perf(int cpunum, u64 *highest_perf) +{ + return cppc_get_perf(cpunum, HIGHEST_PERF, highest_perf); +} +EXPORT_SYMBOL_GPL(cppc_get_highest_perf); + /** * cppc_get_epp_perf - Get the epp register value. * @cpunum: CPU from which to get epp preference value. diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h index 3a0995f8bce8..930b6afba6f4 100644 --- a/include/acpi/cppc_acpi.h +++ b/include/acpi/cppc_acpi.h @@ -139,6 +139,7 @@ struct cppc_cpudata { #ifdef CONFIG_ACPI_CPPC_LIB extern int cppc_get_desired_perf(int cpunum, u64 *desired_perf); extern int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf); +extern int cppc_get_highest_perf(int cpunum, u64 *highest_perf); extern int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs); extern int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls); extern int cppc_set_enable(int cpu, bool enable); @@ -167,6 +168,10 @@ static inline int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf) { return -ENOTSUPP; } +static inline int cppc_get_highest_perf(int cpunum, u64 *highest_perf) +{ + return -ENOTSUPP; +} static inline int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs) { return -ENOTSUPP;