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Wysocki" , Huang Rui CC: , , , , Shuah Khan , , "Nathan Fontenot" , Deepak Sharma , Alex Deucher , Mario Limonciello , Shimmer Huang , "Perry Yuan" , Xiaojian Du , Viresh Kumar , Borislav Petkov , Meng Li Subject: [PATCH V1 1/6] ACPI: CPPC: Add get the highest performance cppc control Date: Tue, 8 Aug 2023 16:09:56 +0800 Message-ID: <20230808081001.2215240-2-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230808081001.2215240-1-li.meng@amd.com> References: <20230808081001.2215240-1-li.meng@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MWH0EPF000971E9:EE_|SA0PR12MB7089:EE_ X-MS-Office365-Filtering-Correlation-Id: b0970465-1843-47ad-0c82-08db97e702e9 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:(13230028)(4636009)(376002)(346002)(136003)(396003)(39860400002)(451199021)(1800799003)(186006)(90011799007)(90021799007)(82310400008)(40470700004)(36840700001)(46966006)(40480700001)(316002)(36860700001)(47076005)(426003)(40460700003)(2616005)(2906002)(82740400003)(356005)(81166007)(36756003)(16526019)(336012)(8936002)(8676002)(26005)(1076003)(5660300002)(7696005)(41300700001)(70586007)(4326008)(70206006)(6636002)(478600001)(54906003)(110136005)(86362001)(15583001)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Aug 2023 08:11:04.3718 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b0970465-1843-47ad-0c82-08db97e702e9 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: MWH0EPF000971E9.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB7089 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org 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. Signed-off-by: Meng Li Reviewed-by: Mario Limonciello --- 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 7ff269a78c20..ad388a0e8484 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -1154,6 +1154,19 @@ 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 6126c977ece0..c0b69ffe7bdb 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); @@ -165,6 +166,10 @@ 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;