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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 , "Oleksandr Natalenko" , Meng Li , Wyes Karny Subject: [RESEND PATCH V9 2/7] acpi: cppc: Add get the highest performance cppc control Date: Fri, 13 Oct 2023 11:31:13 +0800 Message-ID: <20231013033118.3759311-3-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231013033118.3759311-1-li.meng@amd.com> References: <20231013033118.3759311-1-li.meng@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: CO1PEPF000042AB:EE_|DM4PR12MB5937:EE_ X-MS-Office365-Filtering-Correlation-Id: bc4f7448-d263-435f-eb7c-08dbcb9cf92b 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)(346002)(39860400002)(396003)(376002)(136003)(230922051799003)(82310400011)(1800799009)(64100799003)(186009)(451199024)(46966006)(40470700004)(36840700001)(86362001)(82740400003)(36756003)(40460700003)(40480700001)(478600001)(2906002)(41300700001)(4326008)(966005)(7696005)(6666004)(7416002)(8676002)(8936002)(5660300002)(2616005)(426003)(1076003)(336012)(47076005)(70206006)(110136005)(70586007)(316002)(6636002)(16526019)(54906003)(26005)(36860700001)(356005)(81166007)(15583001)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Oct 2023 03:32:05.7392 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: bc4f7448-d263-435f-eb7c-08dbcb9cf92b 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: CO1PEPF000042AB.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5937 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. Please refer to the ACPI_Spec for details on continuous performance control of CPPC. Tested-by: Oleksandr Natalenko Reviewed-by: Mario Limonciello Reviewed-by: Wyes Karny 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 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;