Received-SPF: softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) client-ip=23.128.96.19;
Received-SPF: Pass (protection.outlook.com: domain of amd.com designates
 165.204.84.17 as permitted sender) receiver=protection.outlook.com;
 client-ip=165.204.84.17; helo=SATLEXMB04.amd.com;
From:   Meng Li <li.meng@amd.com>
To:     Shuah Khan <skhan@linuxfoundation.org>,
        Huang Rui <ray.huang@amd.com>, <linux-pm@vger.kernel.org>
CC:     "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
        Nathan Fontenot <nathan.fontenot@amd.com>,
        Deepak Sharma <deepak.sharma@amd.com>,
        "Alex Deucher" <alexander.deucher@amd.com>,
        Mario Limonciello <mario.limonciello@amd.com>,
        Jinzhou Su <Jinzhou.Su@amd.com>,
        Perry Yuan <Perry.Yuan@amd.com>,
        Xiaojian Du <Xiaojian.Du@amd.com>,
        Viresh Kumar <viresh.kumar@linaro.org>,
        Borislav Petkov <bp@alien8.de>, <linux-kernel@vger.kernel.org>,
        Meng Li <li.meng@amd.com>
Subject: [PATCH V3 1/3] cpufreq: amd-pstate: Expose struct amd_cpudata
Date:   Thu, 21 Apr 2022 15:41:50 +0800
Message-ID: <20220421074152.599419-2-li.meng@amd.com>
In-Reply-To: <20220421074152.599419-1-li.meng@amd.com>
References: <20220421074152.599419-1-li.meng@amd.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Apr 2022 07:42:19.4678
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 2027affb-9262-4ba9-2ccb-08da236a76f0
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: BN8NAM11FT034.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR12MB1795
X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED,
	DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE autolearn=no
	autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
	lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@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_testmod) module. The amd_pstate_testmod module can get
some AMD infomations by this data struct. For example: highest perf,
nominal perf, boost supported etc.

Signed-off-by: Meng Li <li.meng@amd.com>
---
 MAINTAINERS                  |  1 +
 drivers/cpufreq/amd-pstate.c | 60 +---------------------------
 include/linux/amd-pstate.h   | 77 ++++++++++++++++++++++++++++++++++++
 3 files changed, 79 insertions(+), 59 deletions(-)
 create mode 100644 include/linux/amd-pstate.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 61d9f114c37f..6f814eda95b5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1020,6 +1020,7 @@ L:	linux-pm@vger.kernel.org
 S:	Supported
 F:	Documentation/admin-guide/pm/amd-pstate.rst
 F:	drivers/cpufreq/amd-pstate*
+F:	include/linux/amd-pstate.h
 F:	tools/power/x86/amd_pstate_tracer/amd_pstate_trace.py
 
 AMD PTDMA DRIVER
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 <linux/delay.h>
 #include <linux/uaccess.h>
 #include <linux/static_call.h>
+#include <linux/amd-pstate.h>
 
 #include <acpi/processor.h>
 #include <acpi/cppc_acpi.h>
@@ -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..4dffb7db3807
--- /dev/null
+++ b/include/linux/amd-pstate.h
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * linux/include/linux/amd-pstate.h
+ *
+ * Copyright (C) 2007-2010 Advanced Micro Devices, Inc.
+ *
+ * Author: Meng Li <li.meng@amd.com>
+ */
+
+#ifndef _LINUX_AMD_PSTATE_H
+#define _LINUX_AMD_PSTATE_H
+
+#include <linux/pm_qos.h>
+
+/*********************************************************************
+ *                        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 */
-- 
2.25.1