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intel_rapl: introduce intel_rapl.h

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Create a new header file for the common definitions that might be used
by different RAPL Interface.

Reviewed-by: Pandruvada, Srinivas <srinivas.pandruvada@intel.com>
Tested-by: Pandruvada, Srinivas <srinivas.pandruvada@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Zhang Rui
2019-07-10 21:44:24 +08:00
committed by Rafael J. Wysocki
parent 8310e8202f
commit ff956826a4
3 changed files with 116 additions and 99 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
MAINTAINERS
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@@ -12679,6 +12679,7 @@ F: drivers/base/power/
F: include/linux/pm.h F: include/linux/pm.h
F: include/linux/pm_* F: include/linux/pm_*
F: include/linux/powercap.h F: include/linux/powercap.h
F: include/linux/intel_rapl.h
F: drivers/powercap/ F: drivers/powercap/
F: kernel/configs/nopm.config F: kernel/configs/nopm.config

101
drivers/powercap/intel_rapl.c
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@@ -18,8 +18,9 @@
#include <linux/cpu.h> #include <linux/cpu.h>
#include <linux/powercap.h> #include <linux/powercap.h>
#include <linux/suspend.h> #include <linux/suspend.h>
#include <asm/iosf_mbi.h> #include <linux/intel_rapl.h>
#include <asm/iosf_mbi.h>
#include <asm/processor.h> #include <asm/processor.h>
#include <asm/cpu_device_id.h> #include <asm/cpu_device_id.h>
#include <asm/intel-family.h> #include <asm/intel-family.h>
@@ -74,59 +75,9 @@ enum unit_type {
TIME_UNIT, TIME_UNIT,
}; };
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,
};
/* per domain data, some are optional */ /* per domain data, some are optional */
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,
};
#define NR_RAW_PRIMITIVES (NR_RAPL_PRIMITIVES - 2) #define NR_RAW_PRIMITIVES (NR_RAPL_PRIMITIVES - 2)
/* Can be expanded to include events, etc.*/
struct rapl_domain_data {
u64 primitives[NR_RAPL_PRIMITIVES];
unsigned long timestamp;
};
struct msrl_action { struct msrl_action {
u32 msr_no; u32 msr_no;
u64 clear_mask; u64 clear_mask;
@@ -138,60 +89,12 @@ struct msrl_action {
#define DOMAIN_STATE_POWER_LIMIT_SET BIT(1) #define DOMAIN_STATE_POWER_LIMIT_SET BIT(1)
#define DOMAIN_STATE_BIOS_LOCKED BIT(2) #define DOMAIN_STATE_BIOS_LOCKED BIT(2)
#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;
};
static const char pl1_name[] = "long_term"; static const char pl1_name[] = "long_term";
static const char pl2_name[] = "short_term"; static const char pl2_name[] = "short_term";
struct rapl_package;
struct rapl_domain {
const char *name;
enum rapl_domain_type id;
int 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;
};
#define power_zone_to_rapl_domain(_zone) \ #define power_zone_to_rapl_domain(_zone) \
container_of(_zone, struct rapl_domain, power_zone) container_of(_zone, struct rapl_domain, power_zone)
/* maximum rapl package domain name: package-%d-die-%d */
#define PACKAGE_DOMAIN_NAME_LENGTH 30
/* Each rapl package contains multiple domains, these are the common
* data across RAPL domains within a package.
*/
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_defaults { struct rapl_defaults {
u8 floor_freq_reg_addr; u8 floor_freq_reg_addr;
int (*check_unit)(struct rapl_package *rp, int cpu); int (*check_unit)(struct rapl_package *rp, int cpu);

113
include/linux/intel_rapl.h Normal file
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@@ -0,0 +1,113 @@
/* 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>
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;
int 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;
};
/* 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];
};
#endif /* __INTEL_RAPL_H__ */