LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Huang Rui <ray.huang@amd.com>
To: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	Shuah Khan <skhan@linuxfoundation.org>,
	"Borislav Petkov" <bp@suse.de>, Ingo Molnar <mingo@kernel.org>,
	<linux-pm@vger.kernel.org>
Cc: Deepak Sharma <deepak.sharma@amd.com>,
	Alex Deucher <alexander.deucher@amd.com>,
	Mario Limonciello <mario.limonciello@amd.com>,
	Nathan Fontenot <nathan.fontenot@amd.com>,
	Jinzhou Su <Jinzhou.Su@amd.com>,
	Xiaojian Du <Xiaojian.Du@amd.com>, <linux-kernel@vger.kernel.org>,
	<x86@kernel.org>, Huang Rui <ray.huang@amd.com>
Subject: [PATCH 08/19] cpufreq: amd: add boost mode support for amd-pstate
Date: Wed, 8 Sep 2021 22:59:50 +0800	[thread overview]
Message-ID: <20210908150001.3702552-9-ray.huang@amd.com> (raw)
In-Reply-To: <20210908150001.3702552-1-ray.huang@amd.com>

If the sbios supports the boost mode of amd-pstate, let's switch to
boost enabled by default.

Signed-off-by: Huang Rui <ray.huang@amd.com>
---
 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


  parent reply	other threads:[~2021-09-08 15:01 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-08 14:59 [PATCH 00/19] cpufreq: introduce a new AMD CPU frequency control mechanism Huang Rui
2021-09-08 14:59 ` [PATCH 01/19] x86/cpufreatures: add AMD CPPC extension feature flag Huang Rui
2021-09-08 20:00   ` Shuah Khan
2021-09-09  9:45     ` Huang Rui
2021-09-09 17:58   ` Borislav Petkov
2021-09-13  9:48     ` Huang Rui
2021-09-13 13:04       ` Borislav Petkov
2021-09-16  9:30         ` Huang Rui
2021-09-08 14:59 ` [PATCH 02/19] x86/msr: add AMD CPPC MSR definitions Huang Rui
2021-09-08 14:59 ` [PATCH 03/19] ACPI: CPPC: add cppc enable register function Huang Rui
2021-09-08 19:14   ` Fontenot, Nathan
2021-09-09  9:50     ` Huang Rui
2021-09-09  0:21   ` Shuah Khan
2021-09-09  9:58     ` Huang Rui
2021-09-08 14:59 ` [PATCH 04/19] cpufreq: amd: introduce a new amd pstate driver to support future processors Huang Rui
2021-09-09 15:01   ` Peter Zijlstra
2021-09-13  8:11     ` Huang Rui
2021-09-13  8:56       ` Peter Zijlstra
2021-09-13 10:54         ` Huang Rui
2021-09-13 11:56           ` Peter Zijlstra
2021-09-16 10:09             ` Huang Rui
2021-09-16 11:19               ` Rafael J. Wysocki
2021-09-17  3:41                 ` Huang Rui
2021-09-09 15:03   ` Peter Zijlstra
2021-09-13 11:55     ` Huang Rui
2021-09-09 19:31   ` Fontenot, Nathan
2021-09-13 11:18     ` Huang Rui
2021-09-08 14:59 ` [PATCH 05/19] cpufreq: amd: add fast switch function for amd-pstate module Huang Rui
2021-09-08 14:59 ` [PATCH 06/19] cpufreq: amd: add acpi cppc function as the backend for legacy processors Huang Rui
2021-09-08 14:59 ` [PATCH 07/19] cpufreq: amd: add trace for amd-pstate module Huang Rui
2021-09-08 14:59 ` Huang Rui [this message]
2021-09-08 18:24   ` [PATCH 08/19] cpufreq: amd: add boost mode support for amd-pstate Fontenot, Nathan
2021-09-09 10:12     ` Huang Rui
2021-09-08 14:59 ` [PATCH 09/19] cpufreq: amd: add amd-pstate checking support check attribute Huang Rui
2021-09-08 14:59 ` [PATCH 10/19] cpufreq: amd: add amd-pstate frequencies attributes Huang Rui
2021-09-08 18:13   ` Fontenot, Nathan
2021-09-08 14:59 ` [PATCH 11/19] cpufreq: amd: add amd-pstate performance attributes Huang Rui
2021-09-08 18:20   ` Fontenot, Nathan
2021-09-08 14:59 ` [PATCH 12/19] cpupower: add AMD P-state capability flag Huang Rui
2021-09-08 14:59 ` [PATCH 13/19] cpupower: add the function to check amd-pstate enabled Huang Rui
2021-09-09 22:16   ` Shuah Khan
2021-09-13 11:29     ` Huang Rui
2021-09-08 14:59 ` [PATCH 14/19] cpupower: initial AMD P-state capability Huang Rui
2021-09-09 22:16   ` Shuah Khan
2021-09-13 12:58     ` Huang Rui
2021-09-08 14:59 ` [PATCH 15/19] cpupower: add amd-pstate sysfs entries into libcpufreq Huang Rui
2021-09-09 22:26   ` Shuah Khan
2021-09-16  8:47     ` Huang Rui
2021-09-08 14:59 ` [PATCH 16/19] cpupower: enable boost state support for amd-pstate module Huang Rui
2021-09-08 17:32   ` Fontenot, Nathan
2021-09-09  9:59     ` Huang Rui
2021-09-09 22:42   ` Shuah Khan
2021-09-16  9:27     ` Huang Rui
2021-09-08 14:59 ` [PATCH 17/19] cpupower: add amd-pstate get data function to query the info Huang Rui
2021-09-09 22:45   ` Shuah Khan
2021-09-08 15:00 ` [PATCH 18/19] cpupower: print amd-pstate information on cpupower Huang Rui
2021-09-09 22:46   ` Shuah Khan
2021-09-16  9:29     ` Huang Rui
2021-09-08 15:00 ` [PATCH 19/19] Documentation: amd-pstate: add amd-pstate driver introduction Huang Rui

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210908150001.3702552-9-ray.huang@amd.com \
    --to=ray.huang@amd.com \
    --cc=Jinzhou.Su@amd.com \
    --cc=Xiaojian.Du@amd.com \
    --cc=alexander.deucher@amd.com \
    --cc=bp@suse.de \
    --cc=deepak.sharma@amd.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=mario.limonciello@amd.com \
    --cc=mingo@kernel.org \
    --cc=nathan.fontenot@amd.com \
    --cc=rafael.j.wysocki@intel.com \
    --cc=skhan@linuxfoundation.org \
    --cc=viresh.kumar@linaro.org \
    --cc=x86@kernel.org \
    --subject='Re: [PATCH 08/19] cpufreq: amd: add boost mode support for amd-pstate' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).