461 lines
12 KiB
C
461 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ACPI_PROCESSOR_H
|
|
#define __ACPI_PROCESSOR_H
|
|
|
|
#include <linux/cpu.h>
|
|
#include <linux/cpufreq.h>
|
|
#include <linux/pm_qos.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/thermal.h>
|
|
#include <linux/types.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
#include <asm/acpi.h>
|
|
|
|
#define ACPI_PROCESSOR_CLASS "processor"
|
|
#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
|
|
#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
|
|
#define ACPI_PROCESSOR_CONTAINER_HID "ACPI0010"
|
|
|
|
#define ACPI_PROCESSOR_BUSY_METRIC 10
|
|
|
|
#define ACPI_PROCESSOR_MAX_POWER 8
|
|
#define ACPI_PROCESSOR_MAX_C2_LATENCY 100
|
|
#define ACPI_PROCESSOR_MAX_C3_LATENCY 1000
|
|
|
|
#define ACPI_PROCESSOR_MAX_THROTTLING 16
|
|
#define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
|
|
#define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
|
|
|
|
#define ACPI_PDC_REVISION_ID 0x1
|
|
|
|
#define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
|
|
#define ACPI_PSD_REV0_ENTRIES 5
|
|
|
|
#define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
|
|
#define ACPI_TSD_REV0_ENTRIES 5
|
|
/*
|
|
* Types of coordination defined in ACPI 3.0. Same macros can be used across
|
|
* P, C and T states
|
|
*/
|
|
#define DOMAIN_COORD_TYPE_SW_ALL 0xfc
|
|
#define DOMAIN_COORD_TYPE_SW_ANY 0xfd
|
|
#define DOMAIN_COORD_TYPE_HW_ALL 0xfe
|
|
|
|
#define ACPI_CSTATE_SYSTEMIO 0
|
|
#define ACPI_CSTATE_FFH 1
|
|
#define ACPI_CSTATE_HALT 2
|
|
#define ACPI_CSTATE_INTEGER 3
|
|
|
|
#define ACPI_CX_DESC_LEN 32
|
|
|
|
/* Power Management */
|
|
|
|
struct acpi_processor_cx;
|
|
|
|
struct acpi_power_register {
|
|
u8 descriptor;
|
|
u16 length;
|
|
u8 space_id;
|
|
u8 bit_width;
|
|
u8 bit_offset;
|
|
u8 access_size;
|
|
u64 address;
|
|
} __packed;
|
|
|
|
struct acpi_processor_cx {
|
|
u8 valid;
|
|
u8 type;
|
|
u32 address;
|
|
u8 entry_method;
|
|
u8 index;
|
|
u32 latency;
|
|
u8 bm_sts_skip;
|
|
char desc[ACPI_CX_DESC_LEN];
|
|
};
|
|
|
|
struct acpi_lpi_state {
|
|
u32 min_residency;
|
|
u32 wake_latency; /* worst case */
|
|
u32 flags;
|
|
u32 arch_flags;
|
|
u32 res_cnt_freq;
|
|
u32 enable_parent_state;
|
|
u64 address;
|
|
u8 index;
|
|
u8 entry_method;
|
|
char desc[ACPI_CX_DESC_LEN];
|
|
};
|
|
|
|
struct acpi_processor_power {
|
|
int count;
|
|
union {
|
|
struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
|
|
struct acpi_lpi_state lpi_states[ACPI_PROCESSOR_MAX_POWER];
|
|
};
|
|
int timer_broadcast_on_state;
|
|
};
|
|
|
|
/* Performance Management */
|
|
|
|
struct acpi_psd_package {
|
|
u64 num_entries;
|
|
u64 revision;
|
|
u64 domain;
|
|
u64 coord_type;
|
|
u64 num_processors;
|
|
} __packed;
|
|
|
|
struct acpi_pct_register {
|
|
u8 descriptor;
|
|
u16 length;
|
|
u8 space_id;
|
|
u8 bit_width;
|
|
u8 bit_offset;
|
|
u8 reserved;
|
|
u64 address;
|
|
} __packed;
|
|
|
|
struct acpi_processor_px {
|
|
u64 core_frequency; /* megahertz */
|
|
u64 power; /* milliWatts */
|
|
u64 transition_latency; /* microseconds */
|
|
u64 bus_master_latency; /* microseconds */
|
|
u64 control; /* control value */
|
|
u64 status; /* success indicator */
|
|
};
|
|
|
|
struct acpi_processor_performance {
|
|
unsigned int state;
|
|
unsigned int platform_limit;
|
|
struct acpi_pct_register control_register;
|
|
struct acpi_pct_register status_register;
|
|
unsigned int state_count;
|
|
struct acpi_processor_px *states;
|
|
struct acpi_psd_package domain_info;
|
|
cpumask_var_t shared_cpu_map;
|
|
unsigned int shared_type;
|
|
};
|
|
|
|
/* Throttling Control */
|
|
|
|
struct acpi_tsd_package {
|
|
u64 num_entries;
|
|
u64 revision;
|
|
u64 domain;
|
|
u64 coord_type;
|
|
u64 num_processors;
|
|
} __packed;
|
|
|
|
struct acpi_ptc_register {
|
|
u8 descriptor;
|
|
u16 length;
|
|
u8 space_id;
|
|
u8 bit_width;
|
|
u8 bit_offset;
|
|
u8 reserved;
|
|
u64 address;
|
|
} __packed;
|
|
|
|
struct acpi_processor_tx_tss {
|
|
u64 freqpercentage; /* */
|
|
u64 power; /* milliWatts */
|
|
u64 transition_latency; /* microseconds */
|
|
u64 control; /* control value */
|
|
u64 status; /* success indicator */
|
|
};
|
|
struct acpi_processor_tx {
|
|
u16 power;
|
|
u16 performance;
|
|
};
|
|
|
|
struct acpi_processor;
|
|
struct acpi_processor_throttling {
|
|
unsigned int state;
|
|
unsigned int platform_limit;
|
|
struct acpi_pct_register control_register;
|
|
struct acpi_pct_register status_register;
|
|
unsigned int state_count;
|
|
struct acpi_processor_tx_tss *states_tss;
|
|
struct acpi_tsd_package domain_info;
|
|
cpumask_var_t shared_cpu_map;
|
|
int (*acpi_processor_get_throttling) (struct acpi_processor * pr);
|
|
int (*acpi_processor_set_throttling) (struct acpi_processor * pr,
|
|
int state, bool force);
|
|
|
|
u32 address;
|
|
u8 duty_offset;
|
|
u8 duty_width;
|
|
u8 tsd_valid_flag;
|
|
unsigned int shared_type;
|
|
struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
|
|
};
|
|
|
|
/* Limit Interface */
|
|
|
|
struct acpi_processor_lx {
|
|
int px; /* performance state */
|
|
int tx; /* throttle level */
|
|
};
|
|
|
|
struct acpi_processor_limit {
|
|
struct acpi_processor_lx state; /* current limit */
|
|
struct acpi_processor_lx thermal; /* thermal limit */
|
|
struct acpi_processor_lx user; /* user limit */
|
|
};
|
|
|
|
struct acpi_processor_flags {
|
|
u8 power:1;
|
|
u8 performance:1;
|
|
u8 throttling:1;
|
|
u8 limit:1;
|
|
u8 bm_control:1;
|
|
u8 bm_check:1;
|
|
u8 has_cst:1;
|
|
u8 has_lpi:1;
|
|
u8 power_setup_done:1;
|
|
u8 bm_rld_set:1;
|
|
u8 need_hotplug_init:1;
|
|
};
|
|
|
|
struct acpi_processor {
|
|
acpi_handle handle;
|
|
u32 acpi_id;
|
|
phys_cpuid_t phys_id; /* CPU hardware ID such as APIC ID for x86 */
|
|
u32 id; /* CPU logical ID allocated by OS */
|
|
u32 pblk;
|
|
int performance_platform_limit;
|
|
int throttling_platform_limit;
|
|
/* 0 - states 0..n-th state available */
|
|
|
|
struct acpi_processor_flags flags;
|
|
struct acpi_processor_power power;
|
|
struct acpi_processor_performance *performance;
|
|
struct acpi_processor_throttling throttling;
|
|
struct acpi_processor_limit limit;
|
|
struct thermal_cooling_device *cdev;
|
|
struct device *dev; /* Processor device. */
|
|
struct freq_qos_request perflib_req;
|
|
struct freq_qos_request thermal_req;
|
|
};
|
|
|
|
struct acpi_processor_errata {
|
|
u8 smp;
|
|
struct {
|
|
u8 throttle:1;
|
|
u8 fdma:1;
|
|
u8 reserved:6;
|
|
u32 bmisx;
|
|
} piix4;
|
|
};
|
|
|
|
extern int acpi_processor_preregister_performance(struct
|
|
acpi_processor_performance
|
|
__percpu *performance);
|
|
|
|
extern int acpi_processor_register_performance(struct acpi_processor_performance
|
|
*performance, unsigned int cpu);
|
|
extern void acpi_processor_unregister_performance(unsigned int cpu);
|
|
|
|
int acpi_processor_pstate_control(void);
|
|
/* note: this locks both the calling module and the processor module
|
|
if a _PPC object exists, rmmod is disallowed then */
|
|
int acpi_processor_notify_smm(struct module *calling_module);
|
|
int acpi_processor_get_psd(acpi_handle handle,
|
|
struct acpi_psd_package *pdomain);
|
|
|
|
/* parsing the _P* objects. */
|
|
extern int acpi_processor_get_performance_info(struct acpi_processor *pr);
|
|
|
|
/* for communication between multiple parts of the processor kernel module */
|
|
DECLARE_PER_CPU(struct acpi_processor *, processors);
|
|
extern struct acpi_processor_errata errata;
|
|
|
|
#if defined(ARCH_HAS_POWER_INIT) && defined(CONFIG_ACPI_PROCESSOR_CSTATE)
|
|
void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
|
|
unsigned int cpu);
|
|
int acpi_processor_ffh_cstate_probe(unsigned int cpu,
|
|
struct acpi_processor_cx *cx,
|
|
struct acpi_power_register *reg);
|
|
void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
|
|
#else
|
|
static inline void acpi_processor_power_init_bm_check(struct
|
|
acpi_processor_flags
|
|
*flags, unsigned int cpu)
|
|
{
|
|
flags->bm_check = 1;
|
|
return;
|
|
}
|
|
static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
|
|
struct acpi_processor_cx *cx,
|
|
struct acpi_power_register
|
|
*reg)
|
|
{
|
|
return -1;
|
|
}
|
|
static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
|
|
*cstate)
|
|
{
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
static inline int call_on_cpu(int cpu, long (*fn)(void *), void *arg,
|
|
bool direct)
|
|
{
|
|
if (direct || (is_percpu_thread() && cpu == smp_processor_id()))
|
|
return fn(arg);
|
|
return work_on_cpu(cpu, fn, arg);
|
|
}
|
|
|
|
/* in processor_perflib.c */
|
|
|
|
#ifdef CONFIG_CPU_FREQ
|
|
extern bool acpi_processor_cpufreq_init;
|
|
void acpi_processor_ignore_ppc_init(void);
|
|
void acpi_processor_ppc_init(struct cpufreq_policy *policy);
|
|
void acpi_processor_ppc_exit(struct cpufreq_policy *policy);
|
|
void acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag);
|
|
extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit);
|
|
#else
|
|
static inline void acpi_processor_ignore_ppc_init(void)
|
|
{
|
|
return;
|
|
}
|
|
static inline void acpi_processor_ppc_init(struct cpufreq_policy *policy)
|
|
{
|
|
return;
|
|
}
|
|
static inline void acpi_processor_ppc_exit(struct cpufreq_policy *policy)
|
|
{
|
|
return;
|
|
}
|
|
static inline void acpi_processor_ppc_has_changed(struct acpi_processor *pr,
|
|
int event_flag)
|
|
{
|
|
static unsigned int printout = 1;
|
|
if (printout) {
|
|
printk(KERN_WARNING
|
|
"Warning: Processor Platform Limit event detected, but not handled.\n");
|
|
printk(KERN_WARNING
|
|
"Consider compiling CPUfreq support into your kernel.\n");
|
|
printout = 0;
|
|
}
|
|
}
|
|
static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
#endif /* CONFIG_CPU_FREQ */
|
|
|
|
/* in processor_core.c */
|
|
phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id);
|
|
phys_cpuid_t acpi_map_madt_entry(u32 acpi_id);
|
|
int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id);
|
|
int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);
|
|
|
|
#ifdef CONFIG_ACPI_CPPC_LIB
|
|
extern int acpi_cppc_processor_probe(struct acpi_processor *pr);
|
|
extern void acpi_cppc_processor_exit(struct acpi_processor *pr);
|
|
#else
|
|
static inline int acpi_cppc_processor_probe(struct acpi_processor *pr)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void acpi_cppc_processor_exit(struct acpi_processor *pr)
|
|
{
|
|
return;
|
|
}
|
|
#endif /* CONFIG_ACPI_CPPC_LIB */
|
|
|
|
/* in processor_pdc.c */
|
|
void acpi_processor_set_pdc(acpi_handle handle);
|
|
|
|
/* in processor_throttling.c */
|
|
#ifdef CONFIG_ACPI_CPU_FREQ_PSS
|
|
int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
|
|
int acpi_processor_get_throttling_info(struct acpi_processor *pr);
|
|
extern int acpi_processor_set_throttling(struct acpi_processor *pr,
|
|
int state, bool force);
|
|
/*
|
|
* Reevaluate whether the T-state is invalid after one cpu is
|
|
* onlined/offlined. In such case the flags.throttling will be updated.
|
|
*/
|
|
extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
|
|
bool is_dead);
|
|
extern const struct file_operations acpi_processor_throttling_fops;
|
|
extern void acpi_processor_throttling_init(void);
|
|
#else
|
|
static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int acpi_processor_set_throttling(struct acpi_processor *pr,
|
|
int state, bool force)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
|
|
bool is_dead) {}
|
|
|
|
static inline void acpi_processor_throttling_init(void) {}
|
|
#endif /* CONFIG_ACPI_CPU_FREQ_PSS */
|
|
|
|
/* in processor_idle.c */
|
|
extern struct cpuidle_driver acpi_idle_driver;
|
|
#ifdef CONFIG_ACPI_PROCESSOR_IDLE
|
|
int acpi_processor_power_init(struct acpi_processor *pr);
|
|
int acpi_processor_power_exit(struct acpi_processor *pr);
|
|
int acpi_processor_power_state_has_changed(struct acpi_processor *pr);
|
|
int acpi_processor_hotplug(struct acpi_processor *pr);
|
|
#else
|
|
static inline int acpi_processor_power_init(struct acpi_processor *pr)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int acpi_processor_power_exit(struct acpi_processor *pr)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int acpi_processor_power_state_has_changed(struct acpi_processor *pr)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int acpi_processor_hotplug(struct acpi_processor *pr)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif /* CONFIG_ACPI_PROCESSOR_IDLE */
|
|
|
|
/* in processor_thermal.c */
|
|
int acpi_processor_get_limit_info(struct acpi_processor *pr);
|
|
extern const struct thermal_cooling_device_ops processor_cooling_ops;
|
|
#if defined(CONFIG_ACPI_CPU_FREQ_PSS) & defined(CONFIG_CPU_FREQ)
|
|
void acpi_thermal_cpufreq_init(struct cpufreq_policy *policy);
|
|
void acpi_thermal_cpufreq_exit(struct cpufreq_policy *policy);
|
|
#else
|
|
static inline void acpi_thermal_cpufreq_init(struct cpufreq_policy *policy)
|
|
{
|
|
return;
|
|
}
|
|
static inline void acpi_thermal_cpufreq_exit(struct cpufreq_policy *policy)
|
|
{
|
|
return;
|
|
}
|
|
#endif /* CONFIG_ACPI_CPU_FREQ_PSS */
|
|
|
|
#endif
|