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Wysocki" , Len Brown , Viresh Kumar , Robert Moore , , , , , Gautham Ranjal Shenoy , "Wyes Karny" , Perry Yuan , "Mario Limonciello" Subject: [PATCH 1/4] ACPI: CPPC: Add a symbol to check if the preferred profile is a server Date: Mon, 5 Jun 2023 10:11:30 -0500 Message-ID: <20230605151133.2615-2-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230605151133.2615-1-mario.limonciello@amd.com> References: <20230605151133.2615-1-mario.limonciello@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: BN8NAM11FT007:EE_|IA0PR12MB8975:EE_ X-MS-Office365-Filtering-Correlation-Id: 7700be57-2833-4ef4-5da2-08db65d7390d 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)(396003)(39860400002)(136003)(346002)(376002)(451199021)(36840700001)(40470700004)(46966006)(7696005)(6666004)(82740400003)(2906002)(356005)(81166007)(70586007)(70206006)(36756003)(110136005)(54906003)(8936002)(5660300002)(44832011)(86362001)(8676002)(41300700001)(4326008)(40480700001)(316002)(478600001)(40460700003)(336012)(426003)(2616005)(966005)(26005)(1076003)(16526019)(186003)(36860700001)(82310400005)(83380400001)(47076005)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Jun 2023 15:12:05.2139 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7700be57-2833-4ef4-5da2-08db65d7390d 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: BN8NAM11FT007.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB8975 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org This symbol will be used by intel-pstate and amd-pstate for making decisions based on what the FADT indicates the system pm profile is. Suggested-by: Gautham Ranjal Shenoy Link: https://uefi.org/htmlspecs/ACPI_Spec_6_4_html/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#fixed-acpi-description-table-fadt Signed-off-by: Mario Limonciello --- drivers/acpi/cppc_acpi.c | 34 ++++++++++++++++++++++++++++++++++ include/acpi/actbl.h | 3 ++- include/acpi/processor.h | 10 ++++++++++ 3 files changed, 46 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index 7ff269a78c20..d8827eae3ba4 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -941,6 +941,40 @@ void acpi_cppc_processor_exit(struct acpi_processor *pr) } EXPORT_SYMBOL_GPL(acpi_cppc_processor_exit); + +/** + * acpi_pm_profile_server() - Check if the system is a server. + * + * Return: true for server profiles, false for anything else + */ +bool acpi_pm_profile_server(void) +{ + switch (acpi_gbl_FADT.preferred_profile) { + case PM_ENTERPRISE_SERVER: + case PM_SOHO_SERVER: + case PM_PERFORMANCE_SERVER: + return true; + } + return false; +} +EXPORT_SYMBOL_GPL(acpi_pm_profile_server); + +/** + * acpi_pm_profile_undefined() - Check if the system is an undefined pm profile. + * + * Return: true for undefined profiles, false for anything else + */ +bool acpi_pm_profile_undefined(void) +{ + if (acpi_gbl_FADT.preferred_profile == PM_UNSPECIFIED) + return true; + if (acpi_gbl_FADT.preferred_profile >= NR_PM_PROFILES) + return true; + return false; +} +EXPORT_SYMBOL_GPL(acpi_pm_profile_undefined); + + /** * cpc_read_ffh() - Read FFH register * @cpunum: CPU number to read diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h index e5dfb6f4de52..451f6276da49 100644 --- a/include/acpi/actbl.h +++ b/include/acpi/actbl.h @@ -307,7 +307,8 @@ enum acpi_preferred_pm_profiles { PM_SOHO_SERVER = 5, PM_APPLIANCE_PC = 6, PM_PERFORMANCE_SERVER = 7, - PM_TABLET = 8 + PM_TABLET = 8, + NR_PM_PROFILES = 9 }; /* Values for sleep_status and sleep_control registers (V5+ FADT) */ diff --git a/include/acpi/processor.h b/include/acpi/processor.h index 94181fe9780a..05a45ebddaea 100644 --- a/include/acpi/processor.h +++ b/include/acpi/processor.h @@ -360,6 +360,8 @@ int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); #ifdef CONFIG_ACPI_CPPC_LIB extern int acpi_cppc_processor_probe(struct acpi_processor *pr); extern void acpi_cppc_processor_exit(struct acpi_processor *pr); +extern bool acpi_pm_profile_server(void); +extern bool acpi_pm_profile_undefined(void); #else static inline int acpi_cppc_processor_probe(struct acpi_processor *pr) { @@ -369,6 +371,14 @@ static inline void acpi_cppc_processor_exit(struct acpi_processor *pr) { return; } +static inline bool acpi_pm_profile_server(void) +{ + return false; +} +static inline bool acpi_pm_profile_undefined(void) +{ + return true; +} #endif /* CONFIG_ACPI_CPPC_LIB */ /* in processor_pdc.c */