Power management fixes for 6.10-rc3

- Fix a recently introduced unchecked HWP MSR access in the
    intel_pstate driver (Srinivas Pandruvada).
 
  - Add missing conversion from MHz to KHz to amd_pstate_set_boost()
    to address sysfs inteface inconsistency and fix P-state frequency
    reporting on AMD Family 1Ah CPUs in the cpupower utility (Dhananjay
    Ugwekar).
 
  - Get rid of an excess global header file used by the amd-pstate
    cpufreq driver (Arnd Bergmann).
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Merge tag 'pm-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix the intel_pstate and amd-pstate cpufreq drivers and the
  cpupower utility.

  Specifics:

   - Fix a recently introduced unchecked HWP MSR access in the
     intel_pstate driver (Srinivas Pandruvada)

   - Add missing conversion from MHz to KHz to amd_pstate_set_boost() to
     address sysfs inteface inconsistency and fix P-state frequency
     reporting on AMD Family 1Ah CPUs in the cpupower utility (Dhananjay
     Ugwekar)

   - Get rid of an excess global header file used by the amd-pstate
     cpufreq driver (Arnd Bergmann)"

* tag 'pm-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Fix unchecked HWP MSR access
  cpufreq: amd-pstate: Fix the inconsistency in max frequency units
  cpufreq: amd-pstate: remove global header file
  tools/power/cpupower: Fix Pstate frequency reporting on AMD Family 1Ah CPUs

MAINTAINERS

@@ -1107,7 +1107,6 @@ 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

drivers/cpufreq/amd-pstate-ut.c

@@ -26,10 +26,11 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/fs.h>
-#include <linux/amd-pstate.h>
 
 #include <acpi/cppc_acpi.h>
 
+#include "amd-pstate.h"
+
 /*
  * Abbreviations:
  * amd_pstate_ut: used as a shortform for AMD P-State unit test.

drivers/cpufreq/amd-pstate.c

@@ -36,7 +36,6 @@
 #include <linux/delay.h>
 #include <linux/uaccess.h>
 #include <linux/static_call.h>
-#include <linux/amd-pstate.h>
 #include <linux/topology.h>
 
 #include <acpi/processor.h>
@@ -46,6 +45,8 @@
 #include <asm/processor.h>
 #include <asm/cpufeature.h>
 #include <asm/cpu_device_id.h>
+
+#include "amd-pstate.h"
 #include "amd-pstate-trace.h"
 
 #define AMD_PSTATE_TRANSITION_LATENCY	20000
@@ -53,6 +54,37 @@
 #define CPPC_HIGHEST_PERF_PERFORMANCE	196
 #define CPPC_HIGHEST_PERF_DEFAULT	166
 
+#define AMD_CPPC_EPP_PERFORMANCE		0x00
+#define AMD_CPPC_EPP_BALANCE_PERFORMANCE	0x80
+#define AMD_CPPC_EPP_BALANCE_POWERSAVE		0xBF
+#define AMD_CPPC_EPP_POWERSAVE			0xFF
+
+/*
+ * enum amd_pstate_mode - driver working mode of amd pstate
+ */
+enum amd_pstate_mode {
+	AMD_PSTATE_UNDEFINED = 0,
+	AMD_PSTATE_DISABLE,
+	AMD_PSTATE_PASSIVE,
+	AMD_PSTATE_ACTIVE,
+	AMD_PSTATE_GUIDED,
+	AMD_PSTATE_MAX,
+};
+
+static const char * const amd_pstate_mode_string[] = {
+	[AMD_PSTATE_UNDEFINED]   = "undefined",
+	[AMD_PSTATE_DISABLE]     = "disable",
+	[AMD_PSTATE_PASSIVE]     = "passive",
+	[AMD_PSTATE_ACTIVE]      = "active",
+	[AMD_PSTATE_GUIDED]      = "guided",
+	NULL,
+};
+
+struct quirk_entry {
+	u32 nominal_freq;
+	u32 lowest_freq;
+};
+
 /*
  * TODO: We need more time to fine tune processors with shared memory solution
  * with community together.
@@ -669,7 +701,7 @@ static int amd_pstate_set_boost(struct cpufreq_policy *policy, int state)
 	if (state)
 		policy->cpuinfo.max_freq = cpudata->max_freq;
 	else
-		policy->cpuinfo.max_freq = cpudata->nominal_freq;
+		policy->cpuinfo.max_freq = cpudata->nominal_freq * 1000;
 
 	policy->max = policy->cpuinfo.max_freq;
 

drivers/cpufreq/amd-pstate.h

@@ -1,7 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * linux/include/linux/amd-pstate.h
- *
  * Copyright (C) 2022 Advanced Micro Devices, Inc.
  *
  * Author: Meng Li <li.meng@amd.com>
@@ -12,11 +10,6 @@
 
 #include <linux/pm_qos.h>
 
-#define AMD_CPPC_EPP_PERFORMANCE		0x00
-#define AMD_CPPC_EPP_BALANCE_PERFORMANCE	0x80
-#define AMD_CPPC_EPP_BALANCE_POWERSAVE		0xBF
-#define AMD_CPPC_EPP_POWERSAVE			0xFF
-
 /*********************************************************************
  *                        AMD P-state INTERFACE                       *
  *********************************************************************/
@@ -108,30 +101,4 @@ struct amd_cpudata {
 	bool	suspended;
 };
 
-/*
- * enum amd_pstate_mode - driver working mode of amd pstate
- */
-enum amd_pstate_mode {
-	AMD_PSTATE_UNDEFINED = 0,
-	AMD_PSTATE_DISABLE,
-	AMD_PSTATE_PASSIVE,
-	AMD_PSTATE_ACTIVE,
-	AMD_PSTATE_GUIDED,
-	AMD_PSTATE_MAX,
-};
-
-static const char * const amd_pstate_mode_string[] = {
-	[AMD_PSTATE_UNDEFINED]   = "undefined",
-	[AMD_PSTATE_DISABLE]     = "disable",
-	[AMD_PSTATE_PASSIVE]     = "passive",
-	[AMD_PSTATE_ACTIVE]      = "active",
-	[AMD_PSTATE_GUIDED]      = "guided",
-	NULL,
-};
-
-struct quirk_entry {
-	u32 nominal_freq;
-	u32 lowest_freq;
-};
-
 #endif /* _LINUX_AMD_PSTATE_H */

drivers/cpufreq/intel_pstate.c

@@ -1153,7 +1153,8 @@ static void intel_pstate_update_policies(void)
 static void __intel_pstate_update_max_freq(struct cpudata *cpudata,
 					   struct cpufreq_policy *policy)
 {
-	intel_pstate_get_hwp_cap(cpudata);
+	if (hwp_active)
+		intel_pstate_get_hwp_cap(cpudata);
 
 	policy->cpuinfo.max_freq = READ_ONCE(global.no_turbo) ?
 			cpudata->pstate.max_freq : cpudata->pstate.turbo_freq;

tools/power/cpupower/utils/helpers/amd.c

@@ -41,6 +41,16 @@ union core_pstate {
 		unsigned res1:31;
 		unsigned en:1;
 	} pstatedef;
+	/* since fam 1Ah: */
+	struct {
+		unsigned fid:12;
+		unsigned res1:2;
+		unsigned vid:8;
+		unsigned iddval:8;
+		unsigned idddiv:2;
+		unsigned res2:31;
+		unsigned en:1;
+	} pstatedef2;
 	unsigned long long val;
 };
 
@@ -48,6 +58,10 @@ static int get_did(union core_pstate pstate)
 {
 	int t;
 
+	/* Fam 1Ah onward do not use did */
+	if (cpupower_cpu_info.family >= 0x1A)
+		return 0;
+
 	if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_PSTATEDEF)
 		t = pstate.pstatedef.did;
 	else if (cpupower_cpu_info.family == 0x12)
@@ -61,12 +75,18 @@ static int get_did(union core_pstate pstate)
 static int get_cof(union core_pstate pstate)
 {
 	int t;
-	int fid, did, cof;
+	int fid, did, cof = 0;
 
 	did = get_did(pstate);
 	if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_PSTATEDEF) {
-		fid = pstate.pstatedef.fid;
+		if (cpupower_cpu_info.family >= 0x1A) {
-		cof = 200 * fid / did;
+			fid = pstate.pstatedef2.fid;
+			if (fid > 0x0f)
+				cof = (fid * 5);
+		} else {
+			fid = pstate.pstatedef.fid;
+			cof = 200 * fid / did;
+		}
 	} else {
 		t = 0x10;
 		fid = pstate.pstate.fid;