[mirror_ubuntu-bionic-kernel.git] / include / acpi / processor.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ACPI_PROCESSOR_H
#define __ACPI_PROCESSOR_H

#include <linux/kernel.h>
#include <linux/cpu.h>
#include <linux/thermal.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 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);

/* 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

/* in processor_perflib.c */

#ifdef CONFIG_CPU_FREQ
void acpi_processor_ppc_init(void);
void acpi_processor_ppc_exit(void);
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_ppc_init(void)
{
	return;
}
static inline void acpi_processor_ppc_exit(void)
{
	return;
}
static inline int 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;
	}
	return 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(void);
void acpi_thermal_cpufreq_exit(void);
#else
static inline void acpi_thermal_cpufreq_init(void)
{
	return;
}
static inline void acpi_thermal_cpufreq_exit(void)
{
	return;
}
#endif	/* CONFIG_ACPI_CPU_FREQ_PSS */

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