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Date: Fri, 2 Dec 2022 15:47:11 +0800
From: Perry Yuan <perry.yuan@....com>
To: <rafael.j.wysocki@...el.com>, <Mario.Limonciello@....com>,
<ray.huang@....com>, <viresh.kumar@...aro.org>
CC: <Deepak.Sharma@....com>, <Nathan.Fontenot@....com>,
<Alexander.Deucher@....com>, <Shimmer.Huang@....com>,
<Xiaojian.Du@....com>, <Li.Meng@....com>, <wyes.karny@....com>,
<linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v6 03/11] cpufreq: intel_pstate: use common macro definition for Energy Preference Performance(EPP)
make the energy preference performance strings and profiles using one
common header for intel_pstate driver, then the amd_pstate epp driver can
use the common header as well. This will simpify the intel_pstate and
amd_pstate driver.
Signed-off-by: Perry Yuan <perry.yuan@....com>
---
arch/x86/include/asm/msr-index.h | 4 ---
drivers/cpufreq/intel_pstate.c | 37 +--------------------
include/linux/cpufreq_common.h | 56 ++++++++++++++++++++++++++++++++
3 files changed, 57 insertions(+), 40 deletions(-)
create mode 100644 include/linux/cpufreq_common.h
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 4a2af82553e4..3983378cff5b 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -472,10 +472,6 @@
#define HWP_MAX_PERF(x) ((x & 0xff) << 8)
#define HWP_DESIRED_PERF(x) ((x & 0xff) << 16)
#define HWP_ENERGY_PERF_PREFERENCE(x) (((unsigned long long) x & 0xff) << 24)
-#define HWP_EPP_PERFORMANCE 0x00
-#define HWP_EPP_BALANCE_PERFORMANCE 0x80
-#define HWP_EPP_BALANCE_POWERSAVE 0xC0
-#define HWP_EPP_POWERSAVE 0xFF
#define HWP_ACTIVITY_WINDOW(x) ((unsigned long long)(x & 0xff3) << 32)
#define HWP_PACKAGE_CONTROL(x) ((unsigned long long)(x & 0x1) << 42)
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index ad9be31753b6..65036ca21719 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -25,6 +25,7 @@
#include <linux/acpi.h>
#include <linux/vmalloc.h>
#include <linux/pm_qos.h>
+#include <linux/cpufreq_common.h>
#include <trace/events/power.h>
#include <asm/cpu.h>
@@ -628,42 +629,6 @@ static int intel_pstate_set_epb(int cpu, s16 pref)
return 0;
}
-/*
- * EPP/EPB display strings corresponding to EPP index in the
- * energy_perf_strings[]
- * index String
- *-------------------------------------
- * 0 default
- * 1 performance
- * 2 balance_performance
- * 3 balance_power
- * 4 power
- */
-
-enum energy_perf_value_index {
- EPP_INDEX_DEFAULT = 0,
- EPP_INDEX_PERFORMANCE,
- EPP_INDEX_BALANCE_PERFORMANCE,
- EPP_INDEX_BALANCE_POWERSAVE,
- EPP_INDEX_POWERSAVE,
-};
-
-static const char * const energy_perf_strings[] = {
- [EPP_INDEX_DEFAULT] = "default",
- [EPP_INDEX_PERFORMANCE] = "performance",
- [EPP_INDEX_BALANCE_PERFORMANCE] = "balance_performance",
- [EPP_INDEX_BALANCE_POWERSAVE] = "balance_power",
- [EPP_INDEX_POWERSAVE] = "power",
- NULL
-};
-static unsigned int epp_values[] = {
- [EPP_INDEX_DEFAULT] = 0, /* Unused index */
- [EPP_INDEX_PERFORMANCE] = HWP_EPP_PERFORMANCE,
- [EPP_INDEX_BALANCE_PERFORMANCE] = HWP_EPP_BALANCE_PERFORMANCE,
- [EPP_INDEX_BALANCE_POWERSAVE] = HWP_EPP_BALANCE_POWERSAVE,
- [EPP_INDEX_POWERSAVE] = HWP_EPP_POWERSAVE,
-};
-
static int intel_pstate_get_energy_pref_index(struct cpudata *cpu_data, int *raw_epp)
{
s16 epp;
diff --git a/include/linux/cpufreq_common.h b/include/linux/cpufreq_common.h
new file mode 100644
index 000000000000..2d14b0b0f55c
--- /dev/null
+++ b/include/linux/cpufreq_common.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * linux/include/linux/cpufreq_common.h
+ *
+ * Copyright (C) 2022 Advanced Micro Devices, Inc.
+ *
+ * Author: Perry Yuan <Perry.Yuan@....com>
+ */
+
+#ifndef _LINUX_CPUFREQ_COMMON_H
+#define _LINUX_CPUFREQ_COMMON_H
+
+#include <asm/msr.h>
+/*
+ * EPP/EPB display strings corresponding to EPP index in the
+ * energy_perf_strings[]
+ * index String
+ *-------------------------------------
+ * 0 default
+ * 1 performance
+ * 2 balance_performance
+ * 3 balance_power
+ * 4 power
+ */
+
+#define HWP_EPP_PERFORMANCE 0x00
+#define HWP_EPP_BALANCE_PERFORMANCE 0x80
+#define HWP_EPP_BALANCE_POWERSAVE 0xC0
+#define HWP_EPP_POWERSAVE 0xFF
+
+enum energy_perf_value_index {
+ EPP_INDEX_DEFAULT = 0,
+ EPP_INDEX_PERFORMANCE,
+ EPP_INDEX_BALANCE_PERFORMANCE,
+ EPP_INDEX_BALANCE_POWERSAVE,
+ EPP_INDEX_POWERSAVE,
+};
+
+static const char * const energy_perf_strings[] = {
+ [EPP_INDEX_DEFAULT] = "default",
+ [EPP_INDEX_PERFORMANCE] = "performance",
+ [EPP_INDEX_BALANCE_PERFORMANCE] = "balance_performance",
+ [EPP_INDEX_BALANCE_POWERSAVE] = "balance_power",
+ [EPP_INDEX_POWERSAVE] = "power",
+ NULL
+};
+
+static unsigned int epp_values[] = {
+ [EPP_INDEX_DEFAULT] = 0, /* Unused index */
+ [EPP_INDEX_PERFORMANCE] = HWP_EPP_PERFORMANCE,
+ [EPP_INDEX_BALANCE_PERFORMANCE] = HWP_EPP_BALANCE_PERFORMANCE,
+ [EPP_INDEX_BALANCE_POWERSAVE] = HWP_EPP_BALANCE_POWERSAVE,
+ [EPP_INDEX_POWERSAVE] = HWP_EPP_POWERSAVE,
+};
+
+#endif /* _LINUX_CPUFREQ_COMMON_H */
\ No newline at end of file
--
2.34.1
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