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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: [PATCH V11 2/7] acpi: cppc: Add get the highest performance cppc control Date: Wed, 29 Nov 2023 14:54:32 +0800 Message-ID: <20231129065437.290183-3-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231129065437.290183-1-li.meng@amd.com> References: <20231129065437.290183-1-li.meng@amd.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: SN1PEPF0002BA51:EE_|PH7PR12MB7018:EE_ X-MS-Office365-Filtering-Correlation-Id: 07d383dc-f687-4d65-157b-08dbf0a8229f 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)(136003)(346002)(39860400002)(396003)(376002)(230922051799003)(64100799003)(1800799012)(82310400011)(451199024)(186009)(46966006)(36840700001)(40470700004)(36756003)(41300700001)(1076003)(81166007)(356005)(47076005)(5660300002)(2906002)(7416002)(82740400003)(336012)(426003)(16526019)(26005)(86362001)(40480700001)(2616005)(36860700001)(7696005)(8936002)(6666004)(8676002)(4326008)(40460700003)(478600001)(966005)(70206006)(110136005)(70586007)(316002)(6636002)(54906003)(15583001)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Nov 2023 06:55:12.8455 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 07d383dc-f687-4d65-157b-08dbf0a8229f 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: SN1PEPF0002BA51.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7018 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 Reviewed-by: Perry Yuan --- 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;