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/* SPDX-License-Identifier: GPL-2.0 */ /* * Data types and headers for RAPL support * * Copyright (C) 2019 Intel Corporation. * * Author: Zhang Rui <rui.zhang@intel.com> */ #ifndef __INTEL_RAPL_H__ #define __INTEL_RAPL_H__ #include <linux/types.h> #include <linux/powercap.h> #include <linux/cpuhotplug.h> enum rapl_domain_type { RAPL_DOMAIN_PACKAGE, /* entire package/socket */ RAPL_DOMAIN_PP0, /* core power plane */ RAPL_DOMAIN_PP1, /* graphics uncore */ RAPL_DOMAIN_DRAM, /* DRAM control_type */ RAPL_DOMAIN_PLATFORM, /* PSys control_type */ RAPL_DOMAIN_MAX, }; enum rapl_domain_reg_id { RAPL_DOMAIN_REG_LIMIT, RAPL_DOMAIN_REG_STATUS, RAPL_DOMAIN_REG_PERF, RAPL_DOMAIN_REG_POLICY, RAPL_DOMAIN_REG_INFO, RAPL_DOMAIN_REG_MAX, }; struct rapl_package; enum rapl_primitives { ENERGY_COUNTER, POWER_LIMIT1, POWER_LIMIT2, FW_LOCK, PL1_ENABLE, /* power limit 1, aka long term */ PL1_CLAMP, /* allow frequency to go below OS request */ PL2_ENABLE, /* power limit 2, aka short term, instantaneous */ PL2_CLAMP, TIME_WINDOW1, /* long term */ TIME_WINDOW2, /* short term */ THERMAL_SPEC_POWER, MAX_POWER, MIN_POWER, MAX_TIME_WINDOW, THROTTLED_TIME, PRIORITY_LEVEL, /* below are not raw primitive data */ AVERAGE_POWER, NR_RAPL_PRIMITIVES, }; struct rapl_domain_data { u64 primitives[NR_RAPL_PRIMITIVES]; unsigned long timestamp; }; #define NR_POWER_LIMITS (2) struct rapl_power_limit { struct powercap_zone_constraint *constraint; int prim_id; /* primitive ID used to enable */ struct rapl_domain *domain; const char *name; u64 last_power_limit; }; struct rapl_package; struct rapl_domain { const char *name; enum rapl_domain_type id; u64 regs[RAPL_DOMAIN_REG_MAX]; struct powercap_zone power_zone; struct rapl_domain_data rdd; struct rapl_power_limit rpl[NR_POWER_LIMITS]; u64 attr_map; /* track capabilities */ unsigned int state; unsigned int domain_energy_unit; struct rapl_package *rp; }; struct reg_action { u64 reg; u64 mask; u64 value; int err; }; /** * struct rapl_if_priv: private data for different RAPL interfaces * @control_type: Each RAPL interface must have its own powercap * control type. * @platform_rapl_domain: Optional. Some RAPL interface may have platform * level RAPL control. * @pcap_rapl_online: CPU hotplug state for each RAPL interface. * @reg_unit: Register for getting energy/power/time unit. * @regs: Register sets for different RAPL Domains. * @limits: Number of power limits supported by each domain. * @read_raw: Callback for reading RAPL interface specific * registers. * @write_raw: Callback for writing RAPL interface specific * registers. */ struct rapl_if_priv { struct powercap_control_type *control_type; struct rapl_domain *platform_rapl_domain; enum cpuhp_state pcap_rapl_online; u64 reg_unit; u64 regs[RAPL_DOMAIN_MAX][RAPL_DOMAIN_REG_MAX]; int limits[RAPL_DOMAIN_MAX]; int (*read_raw)(int cpu, struct reg_action *ra); int (*write_raw)(int cpu, struct reg_action *ra); }; /* maximum rapl package domain name: package-%d-die-%d */ #define PACKAGE_DOMAIN_NAME_LENGTH 30 struct rapl_package { unsigned int id; /* logical die id, equals physical 1-die systems */ unsigned int nr_domains; unsigned long domain_map; /* bit map of active domains */ unsigned int power_unit; unsigned int energy_unit; unsigned int time_unit; struct rapl_domain *domains; /* array of domains, sized at runtime */ struct powercap_zone *power_zone; /* keep track of parent zone */ unsigned long power_limit_irq; /* keep track of package power limit * notify interrupt enable status. */ struct list_head plist; int lead_cpu; /* one active cpu per package for access */ /* Track active cpus */ struct cpumask cpumask; char name[PACKAGE_DOMAIN_NAME_LENGTH]; struct rapl_if_priv *priv; }; struct rapl_package *rapl_find_package_domain(int cpu, struct rapl_if_priv *priv); struct rapl_package *rapl_add_package(int cpu, struct rapl_if_priv *priv); void rapl_remove_package(struct rapl_package *rp); int rapl_add_platform_domain(struct rapl_if_priv *priv); void rapl_remove_platform_domain(struct rapl_if_priv *priv); #endif /* __INTEL_RAPL_H__ */
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