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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>,
	Peter Zijlstra <peterz@infradead.org>,
	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 v2 17/21] cpupower: add amd-pstate sysfs definition and access helper
Date: Sun, 26 Sep 2021 17:06:01 +0800	[thread overview]
Message-ID: <20210926090605.3556134-18-ray.huang@amd.com> (raw)
In-Reply-To: <20210926090605.3556134-1-ray.huang@amd.com>

Introduce the marco definitions and access helper function for
amd-pstate sysfs interfaces such as each performance goals and frequency
levels in amd helper file. They will be used to read the sysfs attribute
from amd-pstate cpufreq driver for cpupower utilities.

Signed-off-by: Huang Rui <ray.huang@amd.com>
---
 tools/power/cpupower/utils/helpers/amd.c | 39 ++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/tools/power/cpupower/utils/helpers/amd.c b/tools/power/cpupower/utils/helpers/amd.c
index 97f2c857048e..b953277215c0 100644
--- a/tools/power/cpupower/utils/helpers/amd.c
+++ b/tools/power/cpupower/utils/helpers/amd.c
@@ -8,7 +8,9 @@
 #include <pci/pci.h>
 
 #include "helpers/helpers.h"
+#include "cpufreq.h"
 
+/* ACPI P-States Helper Functions for AMD Processors ***************/
 #define MSR_AMD_PSTATE_STATUS	0xc0010063
 #define MSR_AMD_PSTATE		0xc0010064
 #define MSR_AMD_PSTATE_LIMIT	0xc0010061
@@ -146,4 +148,41 @@ int amd_pci_get_num_boost_states(int *active, int *states)
 	pci_cleanup(pci_acc);
 	return 0;
 }
+
+/* ACPI P-States Helper Functions for AMD Processors ***************/
+
+/* AMD P-States Helper Functions ***************/
+enum amd_pstate_value {
+	AMD_PSTATE_HIGHEST_PERF,
+	AMD_PSTATE_NOMINAL_PERF,
+	AMD_PSTATE_LOWEST_NONLINEAR_PERF,
+	AMD_PSTATE_LOWEST_PERF,
+	AMD_PSTATE_MAX_FREQ,
+	AMD_PSTATE_NOMINAL_FREQ,
+	AMD_PSTATE_LOWEST_NONLINEAR_FREQ,
+	AMD_PSTATE_MIN_FREQ,
+	MAX_AMD_PSTATE_VALUE_READ_FILES
+};
+
+static const char *amd_pstate_value_files[MAX_AMD_PSTATE_VALUE_READ_FILES] = {
+	[AMD_PSTATE_HIGHEST_PERF] = "amd_pstate_highest_perf",
+	[AMD_PSTATE_NOMINAL_PERF] = "amd_pstate_nominal_perf",
+	[AMD_PSTATE_LOWEST_NONLINEAR_PERF] = "amd_pstate_lowest_nonlinear_perf",
+	[AMD_PSTATE_LOWEST_PERF] = "amd_pstate_lowest_perf",
+	[AMD_PSTATE_MAX_FREQ] = "amd_pstate_max_freq",
+	[AMD_PSTATE_NOMINAL_FREQ] = "amd_pstate_nominal_freq",
+	[AMD_PSTATE_LOWEST_NONLINEAR_FREQ] = "amd_pstate_lowest_nonlinear_freq",
+	[AMD_PSTATE_MIN_FREQ] = "amd_pstate_min_freq"
+};
+
+static unsigned long amd_pstate_get_data(unsigned int cpu,
+					 enum amd_pstate_value value)
+{
+	return cpufreq_get_sysfs_value_from_table(cpu,
+						  amd_pstate_value_files,
+						  value,
+						  MAX_AMD_PSTATE_VALUE_READ_FILES);
+}
+
+/* AMD P-States Helper Functions ***************/
 #endif /* defined(__i386__) || defined(__x86_64__) */
-- 
2.25.1


  parent reply	other threads:[~2021-09-26  9:07 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-26  9:05 [PATCH v2 00/21] cpufreq: introduce a new AMD CPU frequency control mechanism Huang Rui
2021-09-26  9:05 ` [PATCH v2 01/21] x86/cpufreatures: add AMD Collaborative Processor Performance Control feature flag Huang Rui
2021-09-26  9:05 ` [PATCH v2 02/21] x86/msr: add AMD CPPC MSR definitions Huang Rui
2021-09-26  9:05 ` [PATCH v2 03/21] ACPI: CPPC: Check online CPUs for determining _CPC is valid Huang Rui
2021-10-19 16:52   ` Rafael J. Wysocki
2021-10-20 11:15     ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 04/21] ACPI: CPPC: add cppc enable register function Huang Rui
2021-09-28 17:06   ` Fontenot, Nathan
2021-10-13 12:28     ` Huang, Ray
2021-10-19 16:59   ` Rafael J. Wysocki
2021-10-20 11:13     ` Huang, Ray
2021-10-20 13:32       ` Rafael J. Wysocki
2021-10-21  3:41         ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 05/21] cpufreq: amd: introduce a new amd pstate driver to support future processors Huang Rui
2021-09-28 20:40   ` Fontenot, Nathan
2021-10-14 10:14     ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 06/21] cpufreq: amd: add fast switch function for amd-pstate module Huang Rui
2021-09-26  9:05 ` [PATCH v2 07/21] cpufreq: amd: add acpi cppc function as the backend for legacy processors Huang Rui
2021-09-26  9:05 ` [PATCH v2 08/21] cpufreq: amd: add trace for amd-pstate module Huang Rui
2021-10-06  8:12   ` Giovanni Gherdovich
2021-10-21 10:19     ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 09/21] cpufreq: amd: add boost mode support for amd-pstate Huang Rui
2021-09-26  9:05 ` [PATCH v2 10/21] cpufreq: amd: add amd-pstate checking support check attribute Huang Rui
2021-09-28 21:24   ` Fontenot, Nathan
2021-10-14 10:26     ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 11/21] cpufreq: amd: add amd-pstate frequencies attributes Huang Rui
2021-09-28 21:35   ` Fontenot, Nathan
2021-10-14 10:35     ` Huang, Ray
2021-09-26  9:05 ` [PATCH v2 12/21] cpufreq: amd: add amd-pstate performance attributes Huang Rui
2021-09-26  9:05 ` [PATCH v2 13/21] cpupower: add AMD P-state capability flag Huang Rui
2021-09-26  9:05 ` [PATCH v2 14/21] cpupower: add the function to check amd-pstate enabled Huang Rui
2021-09-26  9:05 ` [PATCH v2 15/21] cpupower: initial AMD P-state capability Huang Rui
2021-09-26  9:06 ` [PATCH v2 16/21] cpupower: add the function to get the sysfs value from specific table Huang Rui
2021-09-26  9:06 ` Huang Rui [this message]
2021-09-26  9:06 ` [PATCH v2 18/21] cpupower: enable boost state support for amd-pstate module Huang Rui
2021-09-26  9:06 ` [PATCH v2 19/21] cpupower: move print_speed function into misc helper Huang Rui
2021-09-26  9:06 ` [PATCH v2 20/21] cpupower: print amd-pstate information on cpupower Huang Rui
2021-09-26  9:06 ` [PATCH v2 21/21] Documentation: amd-pstate: add amd-pstate driver introduction Huang Rui
2021-10-13 16:23   ` Giovanni Gherdovich
2021-10-14 11:30     ` Huang, Ray

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