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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/include/linux/pm_qos.h
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..
@@ -1,27 +1,20 @@
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1
 /* SPDX-License-Identifier: GPL-2.0 */
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+/*
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+ * Definitions related to Power Management Quality of Service (PM QoS).
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+ *
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+ * Copyright (C) 2020 Intel Corporation
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+ *
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+ * Authors:
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+ *	Mark Gross <mgross@linux.intel.com>
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+ *	Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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+ */
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+
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 #ifndef _LINUX_PM_QOS_H
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 #define _LINUX_PM_QOS_H
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-/* interface for the pm_qos_power infrastructure of the linux kernel.
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- *
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- * Mark Gross <mgross@linux.intel.com>
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- */
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+
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 #include <linux/plist.h>
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16
 #include <linux/notifier.h>
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 #include <linux/device.h>
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-#include <linux/workqueue.h>
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-#include <linux/cpumask.h>
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-#include <linux/interrupt.h>
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-
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-enum {
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-	PM_QOS_RESERVED = 0,
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-	PM_QOS_CPU_DMA_LATENCY,
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-	PM_QOS_NETWORK_LATENCY,
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-	PM_QOS_NETWORK_THROUGHPUT,
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-	PM_QOS_MEMORY_BANDWIDTH,
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-
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-	/* insert new class ID */
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-	PM_QOS_NUM_CLASSES,
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-};
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18
 
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 enum pm_qos_flags_status {
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 	PM_QOS_FLAGS_UNDEFINED = -1,
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@@ -34,64 +27,21 @@
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 #define PM_QOS_LATENCY_ANY	S32_MAX
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 #define PM_QOS_LATENCY_ANY_NS	((s64)PM_QOS_LATENCY_ANY * NSEC_PER_USEC)
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29
 
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-#define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE	(2000 * USEC_PER_SEC)
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-#define PM_QOS_NETWORK_LAT_DEFAULT_VALUE	(2000 * USEC_PER_SEC)
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-#define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE	0
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-#define PM_QOS_MEMORY_BANDWIDTH_DEFAULT_VALUE	0
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+#define PM_QOS_CPU_LATENCY_DEFAULT_VALUE	(2000 * USEC_PER_SEC)
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 #define PM_QOS_RESUME_LATENCY_DEFAULT_VALUE	PM_QOS_LATENCY_ANY
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 #define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT	PM_QOS_LATENCY_ANY
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 #define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS	PM_QOS_LATENCY_ANY_NS
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 #define PM_QOS_LATENCY_TOLERANCE_DEFAULT_VALUE	0
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+#define PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE	0
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+#define PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE	FREQ_QOS_MAX_DEFAULT_VALUE
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 #define PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT	(-1)
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38
 
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 #define PM_QOS_FLAG_NO_POWER_OFF	(1 << 0)
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-
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-enum pm_qos_req_type {
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-	PM_QOS_REQ_ALL_CORES = 0,
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-	PM_QOS_REQ_AFFINE_CORES,
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-#ifdef CONFIG_SMP
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-	PM_QOS_REQ_AFFINE_IRQ,
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-#endif
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-};
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-
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-struct pm_qos_request {
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-	enum pm_qos_req_type type;
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-	struct cpumask cpus_affine;
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-#ifdef CONFIG_SMP
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-	uint32_t irq;
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-	/* Internal structure members */
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-	struct irq_affinity_notify irq_notify;
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-#endif
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-	struct plist_node node;
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-	int pm_qos_class;
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-	struct delayed_work work; /* for pm_qos_update_request_timeout */
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-};
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-
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-struct pm_qos_flags_request {
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-	struct list_head node;
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-	s32 flags;	/* Do not change to 64 bit */
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-};
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-
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-enum dev_pm_qos_req_type {
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-	DEV_PM_QOS_RESUME_LATENCY = 1,
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-	DEV_PM_QOS_LATENCY_TOLERANCE,
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-	DEV_PM_QOS_FLAGS,
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-};
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-
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-struct dev_pm_qos_request {
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-	enum dev_pm_qos_req_type type;
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-	union {
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-		struct plist_node pnode;
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-		struct pm_qos_flags_request flr;
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-	} data;
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-	struct device *dev;
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-};
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40
 
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 enum pm_qos_type {
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 	PM_QOS_UNITIALIZED,
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 	PM_QOS_MAX,		/* return the largest value */
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 	PM_QOS_MIN,		/* return the smallest value */
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-	PM_QOS_SUM		/* return the sum */
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 };
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46
 
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 /*
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@@ -102,11 +52,20 @@
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 struct pm_qos_constraints {
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 	struct plist_head list;
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 	s32 target_value;	/* Do not change to 64 bit */
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-	s32 target_per_cpu[NR_CPUS];
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 	s32 default_value;
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 	s32 no_constraint_value;
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 	enum pm_qos_type type;
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 	struct blocking_notifier_head *notifiers;
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+};
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+
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+struct pm_qos_request {
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+	struct plist_node node;
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+	struct pm_qos_constraints *qos;
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+};
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+
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+struct pm_qos_flags_request {
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+	struct list_head node;
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+	s32 flags;	/* Do not change to 64 bit */
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69
 };
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70
 
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 struct pm_qos_flags {
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@@ -114,9 +73,52 @@
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 	s32 effective_flags;	/* Do not change to 64 bit */
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74
 };
116
75
 
76
+
77
+#define FREQ_QOS_MIN_DEFAULT_VALUE	0
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+#define FREQ_QOS_MAX_DEFAULT_VALUE	S32_MAX
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+
80
+enum freq_qos_req_type {
81
+	FREQ_QOS_MIN = 1,
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+	FREQ_QOS_MAX,
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+};
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+
85
+struct freq_constraints {
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+	struct pm_qos_constraints min_freq;
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+	struct blocking_notifier_head min_freq_notifiers;
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+	struct pm_qos_constraints max_freq;
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+	struct blocking_notifier_head max_freq_notifiers;
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+};
91
+
92
+struct freq_qos_request {
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+	enum freq_qos_req_type type;
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+	struct plist_node pnode;
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+	struct freq_constraints *qos;
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+	ANDROID_OEM_DATA_ARRAY(1, 2);
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+};
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+
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+
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+enum dev_pm_qos_req_type {
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+	DEV_PM_QOS_RESUME_LATENCY = 1,
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+	DEV_PM_QOS_LATENCY_TOLERANCE,
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+	DEV_PM_QOS_MIN_FREQUENCY,
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+	DEV_PM_QOS_MAX_FREQUENCY,
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+	DEV_PM_QOS_FLAGS,
106
+};
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+
108
+struct dev_pm_qos_request {
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+	enum dev_pm_qos_req_type type;
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+	union {
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+		struct plist_node pnode;
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+		struct pm_qos_flags_request flr;
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+		struct freq_qos_request freq;
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+	} data;
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+	struct device *dev;
116
+};
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+
117
118
 struct dev_pm_qos {
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119
 	struct pm_qos_constraints resume_latency;
119
120
 	struct pm_qos_constraints latency_tolerance;
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+	struct freq_constraints freq;
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122
 	struct pm_qos_flags flags;
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123
 	struct dev_pm_qos_request *resume_latency_req;
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124
 	struct dev_pm_qos_request *latency_tolerance_req;
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@@ -135,41 +137,47 @@
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 	return req->dev != NULL;
136
138
 }
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139
 
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+s32 pm_qos_read_value(struct pm_qos_constraints *c);
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141
 int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node,
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-			 enum pm_qos_req_action action, int value,
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-			 bool dev_req);
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+			 enum pm_qos_req_action action, int value);
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143
 bool pm_qos_update_flags(struct pm_qos_flags *pqf,
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144
 			 struct pm_qos_flags_request *req,
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145
 			 enum pm_qos_req_action action, s32 val);
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-void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class,
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-			s32 value);
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-void pm_qos_update_request(struct pm_qos_request *req,
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-			   s32 new_value);
148
-void pm_qos_update_request_timeout(struct pm_qos_request *req,
149
-				   s32 new_value, unsigned long timeout_us);
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-void pm_qos_remove_request(struct pm_qos_request *req);
151
146
 
152
-int pm_qos_request(int pm_qos_class);
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-int pm_qos_request_for_cpu(int pm_qos_class, int cpu);
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-int pm_qos_request_for_cpumask(int pm_qos_class, struct cpumask *mask);
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-int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier);
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-int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier);
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-int pm_qos_request_active(struct pm_qos_request *req);
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-s32 pm_qos_read_value(struct pm_qos_constraints *c);
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+#ifdef CONFIG_CPU_IDLE
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+s32 cpu_latency_qos_limit(void);
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+bool cpu_latency_qos_request_active(struct pm_qos_request *req);
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+void cpu_latency_qos_add_request(struct pm_qos_request *req, s32 value);
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+void cpu_latency_qos_update_request(struct pm_qos_request *req, s32 new_value);
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+void cpu_latency_qos_remove_request(struct pm_qos_request *req);
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+#else
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+static inline s32 cpu_latency_qos_limit(void) { return INT_MAX; }
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+static inline bool cpu_latency_qos_request_active(struct pm_qos_request *req)
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+{
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+	return false;
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+}
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+static inline void cpu_latency_qos_add_request(struct pm_qos_request *req,
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+					       s32 value) {}
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+static inline void cpu_latency_qos_update_request(struct pm_qos_request *req,
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+						  s32 new_value) {}
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+static inline void cpu_latency_qos_remove_request(struct pm_qos_request *req) {}
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+#endif
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165
 
160
166
 #ifdef CONFIG_PM
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167
 enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask);
162
168
 enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask);
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-s32 __dev_pm_qos_read_value(struct device *dev);
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-s32 dev_pm_qos_read_value(struct device *dev);
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+s32 __dev_pm_qos_resume_latency(struct device *dev);
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+s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type);
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 int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req,
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172
 			   enum dev_pm_qos_req_type type, s32 value);
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173
 int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value);
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174
 int dev_pm_qos_remove_request(struct dev_pm_qos_request *req);
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 int dev_pm_qos_add_notifier(struct device *dev,
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-			    struct notifier_block *notifier);
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+			    struct notifier_block *notifier,
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+			    enum dev_pm_qos_req_type type);
171
178
 int dev_pm_qos_remove_notifier(struct device *dev,
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-			       struct notifier_block *notifier);
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+			       struct notifier_block *notifier,
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+			       enum dev_pm_qos_req_type type);
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181
 void dev_pm_qos_constraints_init(struct device *dev);
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182
 void dev_pm_qos_constraints_destroy(struct device *dev);
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183
 int dev_pm_qos_add_ancestor_request(struct device *dev,
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@@ -195,7 +203,7 @@
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 	return dev->power.qos->flags_req->data.flr.flags;
196
204
 }
197
205
 
198
-static inline s32 dev_pm_qos_raw_read_value(struct device *dev)
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+static inline s32 dev_pm_qos_raw_resume_latency(struct device *dev)
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 {
200
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 	return IS_ERR_OR_NULL(dev->power.qos) ?
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 		PM_QOS_RESUME_LATENCY_NO_CONSTRAINT :
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@@ -208,10 +216,24 @@
208
216
 static inline enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev,
209
217
 							s32 mask)
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 			{ return PM_QOS_FLAGS_UNDEFINED; }
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-static inline s32 __dev_pm_qos_read_value(struct device *dev)
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+static inline s32 __dev_pm_qos_resume_latency(struct device *dev)
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 			{ return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; }
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-static inline s32 dev_pm_qos_read_value(struct device *dev)
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-			{ return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT; }
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+static inline s32 dev_pm_qos_read_value(struct device *dev,
222
+					enum dev_pm_qos_req_type type)
223
+{
224
+	switch (type) {
225
+	case DEV_PM_QOS_RESUME_LATENCY:
226
+		return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT;
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+	case DEV_PM_QOS_MIN_FREQUENCY:
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+		return PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE;
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+	case DEV_PM_QOS_MAX_FREQUENCY:
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+		return PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE;
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+	default:
232
+		WARN_ON(1);
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+		return 0;
234
+	}
235
+}
236
+
215
237
 static inline int dev_pm_qos_add_request(struct device *dev,
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 					 struct dev_pm_qos_request *req,
217
239
 					 enum dev_pm_qos_req_type type,
..
..
@@ -223,10 +245,12 @@
223
245
 static inline int dev_pm_qos_remove_request(struct dev_pm_qos_request *req)
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 			{ return 0; }
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 static inline int dev_pm_qos_add_notifier(struct device *dev,
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-					  struct notifier_block *notifier)
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+					  struct notifier_block *notifier,
249
+					  enum dev_pm_qos_req_type type)
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250
 			{ return 0; }
228
251
 static inline int dev_pm_qos_remove_notifier(struct device *dev,
229
-					     struct notifier_block *notifier)
252
+					     struct notifier_block *notifier,
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+					     enum dev_pm_qos_req_type type)
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254
 			{ return 0; }
231
255
 static inline void dev_pm_qos_constraints_init(struct device *dev)
232
256
 {
..
..
@@ -262,10 +286,35 @@
262
286
 	return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT;
263
287
 }
264
288
 static inline s32 dev_pm_qos_requested_flags(struct device *dev) { return 0; }
265
-static inline s32 dev_pm_qos_raw_read_value(struct device *dev)
289
+static inline s32 dev_pm_qos_raw_resume_latency(struct device *dev)
266
290
 {
267
291
 	return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT;
268
292
 }
269
293
 #endif
270
294
 
295
+static inline int freq_qos_request_active(struct freq_qos_request *req)
296
+{
297
+	return !IS_ERR_OR_NULL(req->qos);
298
+}
299
+
300
+void freq_constraints_init(struct freq_constraints *qos);
301
+
302
+s32 freq_qos_read_value(struct freq_constraints *qos,
303
+			enum freq_qos_req_type type);
304
+
305
+int freq_qos_add_request(struct freq_constraints *qos,
306
+			 struct freq_qos_request *req,
307
+			 enum freq_qos_req_type type, s32 value);
308
+int freq_qos_update_request(struct freq_qos_request *req, s32 new_value);
309
+int freq_qos_remove_request(struct freq_qos_request *req);
310
+int freq_qos_apply(struct freq_qos_request *req,
311
+		   enum pm_qos_req_action action, s32 value);
312
+
313
+int freq_qos_add_notifier(struct freq_constraints *qos,
314
+			  enum freq_qos_req_type type,
315
+			  struct notifier_block *notifier);
316
+int freq_qos_remove_notifier(struct freq_constraints *qos,
317
+			     enum freq_qos_req_type type,
318
+			     struct notifier_block *notifier);
319
+
271
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 #endif