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Wysocki" , Viresh Kumar , Shuah Khan , "Borislav Petkov" , Ingo Molnar , CC: Deepak Sharma , Alex Deucher , Mario Limonciello , Nathan Fontenot , Jinzhou Su , Xiaojian Du , , , Huang Rui Subject: [PATCH 08/19] cpufreq: amd: add boost mode support for amd-pstate Date: Wed, 8 Sep 2021 22:59:50 +0800 Message-ID: <20210908150001.3702552-9-ray.huang@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210908150001.3702552-1-ray.huang@amd.com> References: <20210908150001.3702552-1-ray.huang@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain 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-Office365-Filtering-Correlation-Id: 9d094a05-79d9-420b-4e7d-08d972d984df X-MS-TrafficTypeDiagnostic: DM6PR12MB3547: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5516; 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:(4636009)(39860400002)(396003)(136003)(376002)(346002)(36840700001)(46966006)(316002)(47076005)(54906003)(4326008)(110136005)(5660300002)(83380400001)(6666004)(26005)(7696005)(478600001)(70206006)(70586007)(82310400003)(16526019)(186003)(82740400003)(86362001)(356005)(81166007)(336012)(426003)(2616005)(1076003)(2906002)(36756003)(8676002)(8936002)(36860700001)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Sep 2021 15:01:21.0673 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9d094a05-79d9-420b-4e7d-08d972d984df 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: CO1NAM11FT036.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB3547 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If the sbios supports the boost mode of amd-pstate, let's switch to boost enabled by default. Signed-off-by: Huang Rui --- drivers/cpufreq/amd-pstate.c | 50 ++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index ea965a122431..67a9a117f524 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -75,6 +75,8 @@ struct amd_cpudata { u32 min_freq; u32 nominal_freq; u32 lowest_nonlinear_freq; + + bool boost_supported; }; struct amd_pstate_perf_funcs { @@ -229,6 +231,19 @@ amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf, max_perf, fast_switch); } +static bool amd_pstate_boost_supported(struct amd_cpudata *cpudata) +{ + u32 highest_perf, nominal_perf; + + highest_perf = READ_ONCE(cpudata->highest_perf); + nominal_perf = READ_ONCE(cpudata->nominal_perf); + + if (highest_perf > nominal_perf) + return true; + + return false; +} + static int amd_pstate_verify(struct cpufreq_policy_data *policy) { cpufreq_verify_within_cpu_limits(policy); @@ -402,6 +417,37 @@ static int amd_get_lowest_nonlinear_freq(struct amd_cpudata *cpudata) return lowest_nonlinear_freq * 1000; } +static int amd_pstate_set_boost(struct cpufreq_policy *policy, int state) +{ + struct amd_cpudata *cpudata = policy->driver_data; + int ret; + + if (!cpudata->boost_supported) { + pr_err("Boost mode is not supported by this processor or SBIOS\n"); + return -EINVAL; + } + + if (state) + policy->cpuinfo.max_freq = cpudata->max_freq; + else + policy->cpuinfo.max_freq = cpudata->nominal_freq; + + policy->max = policy->cpuinfo.max_freq; + + ret = freq_qos_update_request(&cpudata->req[1], + policy->cpuinfo.max_freq); + if (ret < 0) + return ret; + + return 0; +} + +static void amd_pstate_boost_init(struct amd_cpudata *cpudata) +{ + cpudata->boost_supported = true; + amd_pstate_driver.boost_enabled = true; +} + static int amd_pstate_init_freqs_in_cpudata(struct amd_cpudata *cpudata, u32 max_freq, u32 min_freq, u32 nominal_freq, @@ -504,6 +550,9 @@ static int amd_pstate_cpu_init(struct cpufreq_policy *policy) policy->driver_data = cpudata; + if (amd_pstate_boost_supported(cpudata)) + amd_pstate_boost_init(cpudata); + return 0; free_cpudata3: @@ -535,6 +584,7 @@ static struct cpufreq_driver amd_pstate_driver = { .fast_switch = amd_pstate_fast_switch, .init = amd_pstate_cpu_init, .exit = amd_pstate_cpu_exit, + .set_boost = amd_pstate_set_boost, .name = "amd-pstate", }; -- 2.25.1