[linux-block.git] / include / acpi / processor.h

/* 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_thermal_init(struct acpi_processor *pr,
				struct acpi_device *device);
void acpi_processor_thermal_exit(struct acpi_processor *pr,
				 struct acpi_device *device);
extern const struct thermal_cooling_device_ops processor_cooling_ops;
#ifdef 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_CPU_FREQ */

#ifdef CONFIG_ACPI_PROCESSOR_IDLE
extern int acpi_processor_ffh_lpi_probe(unsigned int cpu);
extern int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi);
#endif

#ifdef CONFIG_ACPI_HOTPLUG_CPU
extern int arch_register_cpu(int cpu);
extern void arch_unregister_cpu(int cpu);
#endif

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef __ACPI_PROCESSOR_H
	3	#define __ACPI_PROCESSOR_H
	4
3b2d9942	5	#include <linux/cpu.h>
d15ce412 VK	6	#include <linux/cpufreq.h>
d15ce412 VK	7	#include <linux/pm_qos.h>
6fd13452 AS	8	#include <linux/printk.h>
	9	#include <linux/sched.h>
	10	#include <linux/smp.h>
d9460fd2	11	#include <linux/thermal.h>
6fd13452 AS	12	#include <linux/types.h>
	13	#include <linux/workqueue.h>
	14
02df8b93 VP	15	#include <asm/acpi.h>
02df8b93 VP	16
ac212b69 RW	17	#define ACPI_PROCESSOR_CLASS "processor"
	18	#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
	19	#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
db62fda3	20	#define ACPI_PROCESSOR_CONTAINER_HID "ACPI0010"
ac212b69	21
1da177e4 LT	22	#define ACPI_PROCESSOR_BUSY_METRIC 10
	23
	24	#define ACPI_PROCESSOR_MAX_POWER 8
	25	#define ACPI_PROCESSOR_MAX_C2_LATENCY 100
	26	#define ACPI_PROCESSOR_MAX_C3_LATENCY 1000
	27
	28	#define ACPI_PROCESSOR_MAX_THROTTLING 16
	29	#define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
	30	#define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
	31
02df8b93 VP	32	#define ACPI_PDC_REVISION_ID 0x1
02df8b93 VP	33
fd350943	34	#define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
3b2d9942 VP	35	#define ACPI_PSD_REV0_ENTRIES 5
3b2d9942 VP	36
01854e69 LY	37	#define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
01854e69 LY	38	#define ACPI_TSD_REV0_ENTRIES 5
3b2d9942 VP	39	/*
	40	* Types of coordination defined in ACPI 3.0. Same macros can be used across
	41	* P, C and T states
	42	*/
	43	#define DOMAIN_COORD_TYPE_SW_ALL 0xfc
	44	#define DOMAIN_COORD_TYPE_SW_ANY 0xfd
	45	#define DOMAIN_COORD_TYPE_HW_ALL 0xfe
	46
4fcb2fcd VP	47	#define ACPI_CSTATE_SYSTEMIO 0
	48	#define ACPI_CSTATE_FFH 1
	49	#define ACPI_CSTATE_HALT 2
a36a7fec	50	#define ACPI_CSTATE_INTEGER 3
4fcb2fcd VP	51
4fcb2fcd VP	52	#define ACPI_CX_DESC_LEN 32
991528d7	53
1da177e4 LT	54	/* Power Management */
	55
	56	struct acpi_processor_cx;
	57
	58	struct acpi_power_register {
4be44fcd LB	59	u8 descriptor;
	60	u16 length;
	61	u8 space_id;
	62	u8 bit_width;
	63	u8 bit_offset;
718be4aa	64	u8 access_size;
4be44fcd	65	u64 address;
92c4d2ad	66	} __packed;
1da177e4	67
1da177e4	68	struct acpi_processor_cx {
4be44fcd LB	69	u8 valid;
	70	u8 type;
	71	u32 address;
bc71bec9	72	u8 entry_method;
991528d7	73	u8 index;
4be44fcd	74	u32 latency;
718be4aa	75	u8 bm_sts_skip;
4fcb2fcd	76	char desc[ACPI_CX_DESC_LEN];
1da177e4 LT	77	};
1da177e4 LT	78
a36a7fec SH	79	struct acpi_lpi_state {
	80	u32 min_residency;
	81	u32 wake_latency; /* worst case */
	82	u32 flags;
	83	u32 arch_flags;
	84	u32 res_cnt_freq;
	85	u32 enable_parent_state;
	86	u64 address;
	87	u8 index;
	88	u8 entry_method;
	89	char desc[ACPI_CX_DESC_LEN];
	90	};
	91
1da177e4	92	struct acpi_processor_power {
4be44fcd	93	int count;
a36a7fec SH	94	union {
	95	struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
	96	struct acpi_lpi_state lpi_states[ACPI_PROCESSOR_MAX_POWER];
	97	};
169a0abb	98	int timer_broadcast_on_state;
1da177e4 LT	99	};
	100
	101	/* Performance Management */
	102
3b2d9942	103	struct acpi_psd_package {
439913ff LM	104	u64 num_entries;
	105	u64 revision;
	106	u64 domain;
	107	u64 coord_type;
	108	u64 num_processors;
92c4d2ad	109	} __packed;
3b2d9942	110
1da177e4	111	struct acpi_pct_register {
4be44fcd LB	112	u8 descriptor;
	113	u16 length;
	114	u8 space_id;
	115	u8 bit_width;
	116	u8 bit_offset;
	117	u8 reserved;
	118	u64 address;
92c4d2ad	119	} __packed;
1da177e4 LT	120
1da177e4 LT	121	struct acpi_processor_px {
439913ff LM	122	u64 core_frequency; /* megahertz */
	123	u64 power; /* milliWatts */
	124	u64 transition_latency; /* microseconds */
	125	u64 bus_master_latency; /* microseconds */
	126	u64 control; /* control value */
	127	u64 status; /* success indicator */
1da177e4 LT	128	};
1da177e4 LT	129
1da177e4	130	struct acpi_processor_performance {
4be44fcd LB	131	unsigned int state;
4be44fcd LB	132	unsigned int platform_limit;
1da177e4 LT	133	struct acpi_pct_register control_register;
1da177e4 LT	134	struct acpi_pct_register status_register;
4be44fcd	135	unsigned int state_count;
1da177e4	136	struct acpi_processor_px *states;
3b2d9942	137	struct acpi_psd_package domain_info;
2fdf66b4	138	cpumask_var_t shared_cpu_map;
3b2d9942	139	unsigned int shared_type;
1da177e4 LT	140	};
1da177e4 LT	141
1da177e4 LT	142	/* Throttling Control */
1da177e4 LT	143
01854e69	144	struct acpi_tsd_package {
439913ff LM	145	u64 num_entries;
	146	u64 revision;
	147	u64 domain;
	148	u64 coord_type;
	149	u64 num_processors;
92c4d2ad	150	} __packed;
01854e69 LY	151
	152	struct acpi_ptc_register {
	153	u8 descriptor;
	154	u16 length;
	155	u8 space_id;
	156	u8 bit_width;
	157	u8 bit_offset;
	158	u8 reserved;
	159	u64 address;
92c4d2ad	160	} __packed;
01854e69 LY	161
01854e69 LY	162	struct acpi_processor_tx_tss {
439913ff LM	163	u64 freqpercentage; /* */
	164	u64 power; /* milliWatts */
	165	u64 transition_latency; /* microseconds */
	166	u64 control; /* control value */
	167	u64 status; /* success indicator */
01854e69	168	};
1da177e4	169	struct acpi_processor_tx {
4be44fcd LB	170	u16 power;
4be44fcd LB	171	u16 performance;
1da177e4 LT	172	};
1da177e4 LT	173
01854e69	174	struct acpi_processor;
1da177e4	175	struct acpi_processor_throttling {
01854e69 LY	176	unsigned int state;
	177	unsigned int platform_limit;
	178	struct acpi_pct_register control_register;
	179	struct acpi_pct_register status_register;
	180	unsigned int state_count;
	181	struct acpi_processor_tx_tss *states_tss;
	182	struct acpi_tsd_package domain_info;
2fdf66b4	183	cpumask_var_t shared_cpu_map;
ff55a9ce LB	184	int (acpi_processor_get_throttling) (struct acpi_processor pr);
ff55a9ce LB	185	int (acpi_processor_set_throttling) (struct acpi_processor pr,
2a908002	186	int state, bool force);
01854e69	187
4be44fcd LB	188	u32 address;
	189	u8 duty_offset;
	190	u8 duty_width;
1180509f ZY	191	u8 tsd_valid_flag;
1180509f ZY	192	unsigned int shared_type;
1da177e4 LT	193	struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
	194	};
	195
	196	/* Limit Interface */
	197
	198	struct acpi_processor_lx {
aee07ba6	199	int px; /* performance state */
4be44fcd	200	int tx; /* throttle level */
1da177e4 LT	201	};
	202
	203	struct acpi_processor_limit {
4be44fcd	204	struct acpi_processor_lx state; /* current limit */
1da177e4	205	struct acpi_processor_lx thermal; /* thermal limit */
4be44fcd	206	struct acpi_processor_lx user; /* user limit */
1da177e4 LT	207	};
1da177e4 LT	208
1da177e4	209	struct acpi_processor_flags {
4be44fcd LB	210	u8 power:1;
	211	u8 performance:1;
	212	u8 throttling:1;
	213	u8 limit:1;
	214	u8 bm_control:1;
	215	u8 bm_check:1;
	216	u8 has_cst:1;
a36a7fec	217	u8 has_lpi:1;
4be44fcd	218	u8 power_setup_done:1;
4f86d3a8	219	u8 bm_rld_set:1;
99b72508	220	u8 need_hotplug_init:1;
1da177e4 LT	221	};
	222
	223	struct acpi_processor {
4be44fcd LB	224	acpi_handle handle;
4be44fcd LB	225	u32 acpi_id;
828aef37	226	phys_cpuid_t phys_id; /* CPU hardware ID such as APIC ID for x86 */
af8f3f51	227	u32 id; /* CPU logical ID allocated by OS */
4be44fcd LB	228	u32 pblk;
4be44fcd LB	229	int performance_platform_limit;
01854e69	230	int throttling_platform_limit;
ff55a9ce	231	/* 0 - states 0..n-th state available */
01854e69	232
1da177e4 LT	233	struct acpi_processor_flags flags;
	234	struct acpi_processor_power power;
	235	struct acpi_processor_performance *performance;
	236	struct acpi_processor_throttling throttling;
	237	struct acpi_processor_limit limit;
d9460fd2	238	struct thermal_cooling_device *cdev;
ac212b69	239	struct device dev; / Processor device. */
3000ce3c RW	240	struct freq_qos_request perflib_req;
3000ce3c RW	241	struct freq_qos_request thermal_req;
1da177e4 LT	242	};
	243
	244	struct acpi_processor_errata {
4be44fcd	245	u8 smp;
1da177e4	246	struct {
4be44fcd LB	247	u8 throttle:1;
	248	u8 fdma:1;
	249	u8 reserved:6;
	250	u32 bmisx;
	251	} piix4;
1da177e4 LT	252	};
1da177e4 LT	253
fd350943 LB	254	extern int acpi_processor_preregister_performance(struct
fd350943 LB	255	acpi_processor_performance
a29d8b8e	256	__percpu *performance);
3b2d9942	257
4be44fcd LB	258	extern int acpi_processor_register_performance(struct acpi_processor_performance
4be44fcd LB	259	*performance, unsigned int cpu);
b2f8dc4c	260	extern void acpi_processor_unregister_performance(unsigned int cpu);
1da177e4	261
d0ea59e1	262	int acpi_processor_pstate_control(void);
1da177e4 LT	263	/* note: this locks both the calling module and the processor module
	264	if a _PPC object exists, rmmod is disallowed then */
	265	int acpi_processor_notify_smm(struct module *calling_module);
4d0f1ce6 JM	266	int acpi_processor_get_psd(acpi_handle handle,
4d0f1ce6 JM	267	struct acpi_psd_package *pdomain);
1da177e4	268
c705c78c KRW	269	/* parsing the _P* objects. */
	270	extern int acpi_processor_get_performance_info(struct acpi_processor *pr);
	271
1da177e4	272	/* for communication between multiple parts of the processor kernel module */
706546d0	273	DECLARE_PER_CPU(struct acpi_processor *, processors);
1da177e4 LT	274	extern struct acpi_processor_errata errata;
1da177e4 LT	275
35ae7133	276	#if defined(ARCH_HAS_POWER_INIT) && defined(CONFIG_ACPI_PROCESSOR_CSTATE)
02df8b93	277	void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
4be44fcd	278	unsigned int cpu);
991528d7	279	int acpi_processor_ffh_cstate_probe(unsigned int cpu,
fd350943 LB	280	struct acpi_processor_cx *cx,
fd350943 LB	281	struct acpi_power_register *reg);
991528d7	282	void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
02df8b93	283	#else
4be44fcd LB	284	static inline void acpi_processor_power_init_bm_check(struct
	285	acpi_processor_flags
	286	*flags, unsigned int cpu)
02df8b93 VP	287	{
	288	flags->bm_check = 1;
	289	return;
	290	}
991528d7	291	static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
fd350943 LB	292	struct acpi_processor_cx *cx,
	293	struct acpi_power_register
	294	*reg)
991528d7 VP	295	{
	296	return -1;
	297	}
fd350943 LB	298	static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
fd350943 LB	299	*cstate)
991528d7 VP	300	{
	301	return;
	302	}
02df8b93 VP	303	#endif
02df8b93 VP	304
696ac2e3 QC	305	static inline int call_on_cpu(int cpu, long (fn)(void ), void *arg,
	306	bool direct)
	307	{
	308	if (direct \|\| (is_percpu_thread() && cpu == smp_processor_id()))
	309	return fn(arg);
	310	return work_on_cpu(cpu, fn, arg);
	311	}
	312
1da177e4	313	/* in processor_perflib.c */
02df8b93	314
1da177e4	315	#ifdef CONFIG_CPU_FREQ
d15ce412 VK	316	extern bool acpi_processor_cpufreq_init;
d15ce412 VK	317	void acpi_processor_ignore_ppc_init(void);
3000ce3c RW	318	void acpi_processor_ppc_init(struct cpufreq_policy *policy);
3000ce3c RW	319	void acpi_processor_ppc_exit(struct cpufreq_policy *policy);
bca5f557	320	void acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag);
e2f74f35	321	extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit);
1da177e4	322	#else
d15ce412	323	static inline void acpi_processor_ignore_ppc_init(void)
4be44fcd LB	324	{
	325	return;
	326	}
3000ce3c	327	static inline void acpi_processor_ppc_init(struct cpufreq_policy *policy)
d15ce412 VK	328	{
	329	return;
	330	}
3000ce3c	331	static inline void acpi_processor_ppc_exit(struct cpufreq_policy *policy)
4be44fcd LB	332	{
	333	return;
	334	}
a507a306	335	static inline void acpi_processor_ppc_has_changed(struct acpi_processor *pr,
d81c45e1	336	int event_flag)
4be44fcd	337	{
1da177e4 LT	338	static unsigned int printout = 1;
1da177e4 LT	339	if (printout) {
4be44fcd LB	340	printk(KERN_WARNING
	341	"Warning: Processor Platform Limit event detected, but not handled.\n");
	342	printk(KERN_WARNING
	343	"Consider compiling CPUfreq support into your kernel.\n");
1da177e4 LT	344	printout = 0;
1da177e4 LT	345	}
1da177e4	346	}
e2f74f35 TR	347	static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
	348	{
	349	return -ENODEV;
	350	}
	351
4be44fcd	352	#endif /* CONFIG_CPU_FREQ */
1da177e4	353
4d5d4cd8	354	/* in processor_core.c */
828aef37	355	phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id);
fb7c2bae	356	phys_cpuid_t acpi_map_madt_entry(u32 acpi_id);
828aef37	357	int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id);
2e9d5e4e	358	int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);
78f16996	359
4f2f7573 AC	360	#ifdef CONFIG_ACPI_CPPC_LIB
	361	extern int acpi_cppc_processor_probe(struct acpi_processor *pr);
	362	extern void acpi_cppc_processor_exit(struct acpi_processor *pr);
	363	#else
	364	static inline int acpi_cppc_processor_probe(struct acpi_processor *pr)
	365	{
	366	return 0;
	367	}
	368	static inline void acpi_cppc_processor_exit(struct acpi_processor *pr)
	369	{
	370	return;
	371	}
	372	#endif /* CONFIG_ACPI_CPPC_LIB */
	373
24119a88 HG	374	/* in processor_pdc.c */
	375	void acpi_processor_set_pdc(acpi_handle handle);
	376
1da177e4	377	/* in processor_throttling.c */
239708a3	378	#ifdef CONFIG_ACPI_CPU_FREQ_PSS
a66b34b2	379	int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
4be44fcd	380	int acpi_processor_get_throttling_info(struct acpi_processor *pr);
2a908002 FP	381	extern int acpi_processor_set_throttling(struct acpi_processor *pr,
2a908002 FP	382	int state, bool force);
5a344a50 ZY	383	/*
	384	* Reevaluate whether the T-state is invalid after one cpu is
	385	* onlined/offlined. In such case the flags.throttling will be updated.
	386	*/
	387	extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
64f3bf2f	388	bool is_dead);
070d8eb1	389	extern const struct file_operations acpi_processor_throttling_fops;
1180509f	390	extern void acpi_processor_throttling_init(void);
239708a3 AC	391	#else
	392	static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
	393	{
	394	return 0;
	395	}
	396
	397	static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr)
	398	{
	399	return -ENODEV;
	400	}
	401
	402	static inline int acpi_processor_set_throttling(struct acpi_processor *pr,
	403	int state, bool force)
	404	{
	405	return -ENODEV;
	406	}
	407
	408	static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
64f3bf2f	409	bool is_dead) {}
239708a3 AC	410
	411	static inline void acpi_processor_throttling_init(void) {}
	412	#endif /* CONFIG_ACPI_CPU_FREQ_PSS */
	413
1da177e4	414	/* in processor_idle.c */
5f05586c AC	415	extern struct cpuidle_driver acpi_idle_driver;
5f05586c AC	416	#ifdef CONFIG_ACPI_PROCESSOR_IDLE
38a991b6 DL	417	int acpi_processor_power_init(struct acpi_processor *pr);
38a991b6 DL	418	int acpi_processor_power_exit(struct acpi_processor *pr);
a36a7fec	419	int acpi_processor_power_state_has_changed(struct acpi_processor *pr);
46bcfad7	420	int acpi_processor_hotplug(struct acpi_processor *pr);
5f05586c AC	421	#else
	422	static inline int acpi_processor_power_init(struct acpi_processor *pr)
	423	{
	424	return -ENODEV;
	425	}
	426
	427	static inline int acpi_processor_power_exit(struct acpi_processor *pr)
	428	{
	429	return -ENODEV;
	430	}
	431
a36a7fec	432	static inline int acpi_processor_power_state_has_changed(struct acpi_processor *pr)
5f05586c AC	433	{
	434	return -ENODEV;
	435	}
	436
	437	static inline int acpi_processor_hotplug(struct acpi_processor *pr)
	438	{
	439	return -ENODEV;
	440	}
	441	#endif /* CONFIG_ACPI_PROCESSOR_IDLE */
1da177e4 LT	442
1da177e4 LT	443	/* in processor_thermal.c */
7fdc74da RL	444	int acpi_processor_thermal_init(struct acpi_processor *pr,
	445	struct acpi_device *device);
	446	void acpi_processor_thermal_exit(struct acpi_processor *pr,
	447	struct acpi_device *device);
9c8b04be	448	extern const struct thermal_cooling_device_ops processor_cooling_ops;
7fdc74da	449	#ifdef CONFIG_CPU_FREQ
3000ce3c RW	450	void acpi_thermal_cpufreq_init(struct cpufreq_policy *policy);
3000ce3c RW	451	void acpi_thermal_cpufreq_exit(struct cpufreq_policy *policy);
1da177e4	452	#else
3000ce3c	453	static inline void acpi_thermal_cpufreq_init(struct cpufreq_policy *policy)
4be44fcd LB	454	{
	455	return;
	456	}
3000ce3c	457	static inline void acpi_thermal_cpufreq_exit(struct cpufreq_policy *policy)
4be44fcd LB	458	{
	459	return;
	460	}
7fdc74da	461	#endif /* CONFIG_CPU_FREQ */
1da177e4	462
31436373 SH	463	#ifdef CONFIG_ACPI_PROCESSOR_IDLE
	464	extern int acpi_processor_ffh_lpi_probe(unsigned int cpu);
	465	extern int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi);
	466	#endif
	467
05e6b431 SH	468	#ifdef CONFIG_ACPI_HOTPLUG_CPU
	469	extern int arch_register_cpu(int cpu);
	470	extern void arch_unregister_cpu(int cpu);
	471	#endif
	472
1da177e4	473	#endif