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Wysocki" , Huang Rui , CC: Nathan Fontenot , Deepak Sharma , Alex Deucher , "Mario Limonciello" , Jinzhou Su , Perry Yuan , Xiaojian Du , "Viresh Kumar" , Borislav Petkov , , Meng Li Subject: [PATCH 1/3] cpufreq: amd-pstate: Expose struct amd_cpudata Date: Wed, 13 Apr 2022 17:05:08 +0800 Message-ID: <20220413090510.4039589-2-li.meng@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220413090510.4039589-1-li.meng@amd.com> References: <20220413090510.4039589-1-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-Office365-Filtering-Correlation-Id: d352b309-ae0b-415e-0122-08da1d2ce693 X-MS-TrafficTypeDiagnostic: MW5PR12MB5598:EE_ X-Microsoft-Antispam-PRVS: 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:(13230001)(4636009)(46966006)(36840700001)(40470700004)(36756003)(82310400005)(36860700001)(8676002)(4326008)(336012)(426003)(70206006)(83380400001)(81166007)(2906002)(356005)(5660300002)(40460700003)(2616005)(16526019)(8936002)(26005)(47076005)(508600001)(316002)(1076003)(86362001)(6666004)(7696005)(54906003)(70586007)(110136005)(186003)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Apr 2022 09:06:30.9881 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d352b309-ae0b-415e-0122-08da1d2ce693 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: BN8NAM11FT067.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW5PR12MB5598 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Expose struct amd_cpudata to AMD P-State unit test module. This data struct will be used on the following AMD P-State unit test (amd-pstate-ut) module. The amd-pstate-ut module can get some AMD infomations by this data struct. For example: highest perf, nominal perf, boost supported etc. Signed-off-by: Meng Li Acked-by: Huang Rui --- MAINTAINERS | 1 + drivers/cpufreq/amd-pstate.c | 60 +---------------------------- include/linux/amd-pstate.h | 74 ++++++++++++++++++++++++++++++++++++ 3 files changed, 76 insertions(+), 59 deletions(-) create mode 100644 include/linux/amd-pstate.h diff --git a/MAINTAINERS b/MAINTAINERS index 9832b607e2e2..f108e83ba851 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1003,6 +1003,7 @@ S: Supported F: Documentation/admin-guide/pm/amd-pstate.rst F: drivers/cpufreq/amd-pstate* F: tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py +F: include/linux/amd-pstate.h AMD PTDMA DRIVER M: Sanjay R Mehta diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 7be38bc6a673..5f7a00a64f76 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include @@ -65,65 +66,6 @@ MODULE_PARM_DESC(shared_mem, static struct cpufreq_driver amd_pstate_driver; -/** - * struct amd_aperf_mperf - * @aperf: actual performance frequency clock count - * @mperf: maximum performance frequency clock count - * @tsc: time stamp counter - */ -struct amd_aperf_mperf { - u64 aperf; - u64 mperf; - u64 tsc; -}; - -/** - * struct amd_cpudata - private CPU data for AMD P-State - * @cpu: CPU number - * @req: constraint request to apply - * @cppc_req_cached: cached performance request hints - * @highest_perf: the maximum performance an individual processor may reach, - * assuming ideal conditions - * @nominal_perf: the maximum sustained performance level of the processor, - * assuming ideal operating conditions - * @lowest_nonlinear_perf: the lowest performance level at which nonlinear power - * savings are achieved - * @lowest_perf: the absolute lowest performance level of the processor - * @max_freq: the frequency that mapped to highest_perf - * @min_freq: the frequency that mapped to lowest_perf - * @nominal_freq: the frequency that mapped to nominal_perf - * @lowest_nonlinear_freq: the frequency that mapped to lowest_nonlinear_perf - * @cur: Difference of Aperf/Mperf/tsc count between last and current sample - * @prev: Last Aperf/Mperf/tsc count value read from register - * @freq: current cpu frequency value - * @boost_supported: check whether the Processor or SBIOS supports boost mode - * - * The amd_cpudata is key private data for each CPU thread in AMD P-State, and - * represents all the attributes and goals that AMD P-State requests at runtime. - */ -struct amd_cpudata { - int cpu; - - struct freq_qos_request req[2]; - u64 cppc_req_cached; - - u32 highest_perf; - u32 nominal_perf; - u32 lowest_nonlinear_perf; - u32 lowest_perf; - - u32 max_freq; - u32 min_freq; - u32 nominal_freq; - u32 lowest_nonlinear_freq; - - struct amd_aperf_mperf cur; - struct amd_aperf_mperf prev; - - u64 freq; - bool boost_supported; -}; - static inline int pstate_enable(bool enable) { return wrmsrl_safe(MSR_AMD_CPPC_ENABLE, enable); diff --git a/include/linux/amd-pstate.h b/include/linux/amd-pstate.h new file mode 100644 index 000000000000..790b04c9000b --- /dev/null +++ b/include/linux/amd-pstate.h @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/include/linux/amd-pstate.h + * + * Copyright (C) 2007-2010 Advanced Micro Devices, Inc. + * Author: Meng Li + */ +#ifndef _LINUX_AMD_PSTATE_H +#define _LINUX_AMD_PSTATE_H + +#include +/********************************************************************* + * AMD P-state INTERFACE * + *********************************************************************/ +/** + * struct amd_aperf_mperf + * @aperf: actual performance frequency clock count + * @mperf: maximum performance frequency clock count + * @tsc: time stamp counter + */ +struct amd_aperf_mperf { + u64 aperf; + u64 mperf; + u64 tsc; +}; + +/** + * struct amd_cpudata - private CPU data for AMD P-State + * @cpu: CPU number + * @req: constraint request to apply + * @cppc_req_cached: cached performance request hints + * @highest_perf: the maximum performance an individual processor may reach, + * assuming ideal conditions + * @nominal_perf: the maximum sustained performance level of the processor, + * assuming ideal operating conditions + * @lowest_nonlinear_perf: the lowest performance level at which nonlinear power + * savings are achieved + * @lowest_perf: the absolute lowest performance level of the processor + * @max_freq: the frequency that mapped to highest_perf + * @min_freq: the frequency that mapped to lowest_perf + * @nominal_freq: the frequency that mapped to nominal_perf + * @lowest_nonlinear_freq: the frequency that mapped to lowest_nonlinear_perf + * @cur: Difference of Aperf/Mperf/tsc count between last and current sample + * @prev: Last Aperf/Mperf/tsc count value read from register + * @freq: current cpu frequency value + * @boost_supported: check whether the Processor or SBIOS supports boost mode + * + * The amd_cpudata is key private data for each CPU thread in AMD P-State, and + * represents all the attributes and goals that AMD P-State requests at runtime. + */ +struct amd_cpudata { + int cpu; + + struct freq_qos_request req[2]; + u64 cppc_req_cached; + + u32 highest_perf; + u32 nominal_perf; + u32 lowest_nonlinear_perf; + u32 lowest_perf; + + u32 max_freq; + u32 min_freq; + u32 nominal_freq; + u32 lowest_nonlinear_freq; + + struct amd_aperf_mperf cur; + struct amd_aperf_mperf prev; + + u64 freq; + bool boost_supported; +}; + +#endif /* _LINUX_AMD_PSTATE_H */