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

#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_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_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;
} __attribute__ ((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_processor_power {
	struct acpi_processor_cx *state;
	unsigned long bm_check_timestamp;
	u32 default_state;
	int count;
	struct acpi_processor_cx 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;
} __attribute__ ((packed));

struct acpi_pct_register {
	u8 descriptor;
	u16 length;
	u8 space_id;
	u8 bit_width;
	u8 bit_offset;
	u8 reserved;
	u64 address;
} __attribute__ ((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;
} __attribute__ ((packed));

struct acpi_ptc_register {
	u8 descriptor;
	u16 length;
	u8 space_id;
	u8 bit_width;
	u8 bit_offset;
	u8 reserved;
	u64 address;
} __attribute__ ((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 power_setup_done:1;
	u8 bm_rld_set:1;
	u8 need_hotplug_init:1;
};

struct acpi_processor {
	acpi_handle handle;
	u32 acpi_id;
	u32 apic_id;
	u32 id;
	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(struct
						  acpi_processor_performance
						  *performance,
						  unsigned int cpu);

/* 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;

#ifdef ARCH_HAS_POWER_INIT
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);
int 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 */
void acpi_processor_set_pdc(acpi_handle handle);
int acpi_get_apicid(acpi_handle, int type, u32 acpi_id);
int acpi_map_cpuid(int apic_id, u32 acpi_id);
int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);

/* in processor_throttling.c */
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,
			unsigned long action);
extern const struct file_operations acpi_processor_throttling_fops;
extern void acpi_processor_throttling_init(void);
/* in processor_idle.c */
int acpi_processor_power_init(struct acpi_processor *pr);
int acpi_processor_power_exit(struct acpi_processor *pr);
int acpi_processor_cst_has_changed(struct acpi_processor *pr);
int acpi_processor_hotplug(struct acpi_processor *pr);
extern struct cpuidle_driver acpi_idle_driver;

#ifdef CONFIG_PM_SLEEP
void acpi_processor_syscore_init(void);
void acpi_processor_syscore_exit(void);
#else
static inline void acpi_processor_syscore_init(void) {}
static inline void acpi_processor_syscore_exit(void) {}
#endif

/* in processor_thermal.c */
int acpi_processor_get_limit_info(struct acpi_processor *pr);
extern const struct thermal_cooling_device_ops processor_cooling_ops;
#ifdef 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

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef __ACPI_PROCESSOR_H
	2	#define __ACPI_PROCESSOR_H
	3
	4	#include <linux/kernel.h>
3b2d9942	5	#include <linux/cpu.h>
d9460fd2	6	#include <linux/thermal.h>
02df8b93 VP	7	#include <asm/acpi.h>
02df8b93 VP	8
ac212b69 RW	9	#define ACPI_PROCESSOR_CLASS "processor"
	10	#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
	11	#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
	12
1da177e4 LT	13	#define ACPI_PROCESSOR_BUSY_METRIC 10
	14
	15	#define ACPI_PROCESSOR_MAX_POWER 8
	16	#define ACPI_PROCESSOR_MAX_C2_LATENCY 100
	17	#define ACPI_PROCESSOR_MAX_C3_LATENCY 1000
	18
	19	#define ACPI_PROCESSOR_MAX_THROTTLING 16
	20	#define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
	21	#define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
	22
02df8b93 VP	23	#define ACPI_PDC_REVISION_ID 0x1
02df8b93 VP	24
fd350943	25	#define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
3b2d9942 VP	26	#define ACPI_PSD_REV0_ENTRIES 5
3b2d9942 VP	27
01854e69 LY	28	#define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
01854e69 LY	29	#define ACPI_TSD_REV0_ENTRIES 5
3b2d9942 VP	30	/*
	31	* Types of coordination defined in ACPI 3.0. Same macros can be used across
	32	* P, C and T states
	33	*/
	34	#define DOMAIN_COORD_TYPE_SW_ALL 0xfc
	35	#define DOMAIN_COORD_TYPE_SW_ANY 0xfd
	36	#define DOMAIN_COORD_TYPE_HW_ALL 0xfe
	37
4fcb2fcd VP	38	#define ACPI_CSTATE_SYSTEMIO 0
	39	#define ACPI_CSTATE_FFH 1
	40	#define ACPI_CSTATE_HALT 2
	41
	42	#define ACPI_CX_DESC_LEN 32
991528d7	43
1da177e4 LT	44	/* Power Management */
	45
	46	struct acpi_processor_cx;
	47
	48	struct acpi_power_register {
4be44fcd LB	49	u8 descriptor;
	50	u16 length;
	51	u8 space_id;
	52	u8 bit_width;
	53	u8 bit_offset;
718be4aa	54	u8 access_size;
4be44fcd	55	u64 address;
1da177e4 LT	56	} __attribute__ ((packed));
1da177e4 LT	57
1da177e4	58	struct acpi_processor_cx {
4be44fcd LB	59	u8 valid;
	60	u8 type;
	61	u32 address;
bc71bec9	62	u8 entry_method;
991528d7	63	u8 index;
4be44fcd	64	u32 latency;
718be4aa	65	u8 bm_sts_skip;
4fcb2fcd	66	char desc[ACPI_CX_DESC_LEN];
1da177e4 LT	67	};
	68
	69	struct acpi_processor_power {
	70	struct acpi_processor_cx *state;
4be44fcd LB	71	unsigned long bm_check_timestamp;
4be44fcd LB	72	u32 default_state;
4be44fcd	73	int count;
1da177e4	74	struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
169a0abb	75	int timer_broadcast_on_state;
1da177e4 LT	76	};
	77
	78	/* Performance Management */
	79
3b2d9942	80	struct acpi_psd_package {
439913ff LM	81	u64 num_entries;
	82	u64 revision;
	83	u64 domain;
	84	u64 coord_type;
	85	u64 num_processors;
3b2d9942 VP	86	} __attribute__ ((packed));
3b2d9942 VP	87
1da177e4	88	struct acpi_pct_register {
4be44fcd LB	89	u8 descriptor;
	90	u16 length;
	91	u8 space_id;
	92	u8 bit_width;
	93	u8 bit_offset;
	94	u8 reserved;
	95	u64 address;
1da177e4 LT	96	} __attribute__ ((packed));
	97
	98	struct acpi_processor_px {
439913ff LM	99	u64 core_frequency; /* megahertz */
	100	u64 power; /* milliWatts */
	101	u64 transition_latency; /* microseconds */
	102	u64 bus_master_latency; /* microseconds */
	103	u64 control; /* control value */
	104	u64 status; /* success indicator */
1da177e4 LT	105	};
1da177e4 LT	106
1da177e4	107	struct acpi_processor_performance {
4be44fcd LB	108	unsigned int state;
4be44fcd LB	109	unsigned int platform_limit;
1da177e4 LT	110	struct acpi_pct_register control_register;
1da177e4 LT	111	struct acpi_pct_register status_register;
4be44fcd	112	unsigned int state_count;
1da177e4	113	struct acpi_processor_px *states;
3b2d9942	114	struct acpi_psd_package domain_info;
2fdf66b4	115	cpumask_var_t shared_cpu_map;
3b2d9942	116	unsigned int shared_type;
1da177e4 LT	117	};
1da177e4 LT	118
1da177e4 LT	119	/* Throttling Control */
1da177e4 LT	120
01854e69	121	struct acpi_tsd_package {
439913ff LM	122	u64 num_entries;
	123	u64 revision;
	124	u64 domain;
	125	u64 coord_type;
	126	u64 num_processors;
01854e69 LY	127	} __attribute__ ((packed));
	128
	129	struct acpi_ptc_register {
	130	u8 descriptor;
	131	u16 length;
	132	u8 space_id;
	133	u8 bit_width;
	134	u8 bit_offset;
	135	u8 reserved;
	136	u64 address;
	137	} __attribute__ ((packed));
	138
	139	struct acpi_processor_tx_tss {
439913ff LM	140	u64 freqpercentage; /* */
	141	u64 power; /* milliWatts */
	142	u64 transition_latency; /* microseconds */
	143	u64 control; /* control value */
	144	u64 status; /* success indicator */
01854e69	145	};
1da177e4	146	struct acpi_processor_tx {
4be44fcd LB	147	u16 power;
4be44fcd LB	148	u16 performance;
1da177e4 LT	149	};
1da177e4 LT	150
01854e69	151	struct acpi_processor;
1da177e4	152	struct acpi_processor_throttling {
01854e69 LY	153	unsigned int state;
	154	unsigned int platform_limit;
	155	struct acpi_pct_register control_register;
	156	struct acpi_pct_register status_register;
	157	unsigned int state_count;
	158	struct acpi_processor_tx_tss *states_tss;
	159	struct acpi_tsd_package domain_info;
2fdf66b4	160	cpumask_var_t shared_cpu_map;
ff55a9ce LB	161	int (acpi_processor_get_throttling) (struct acpi_processor pr);
ff55a9ce LB	162	int (acpi_processor_set_throttling) (struct acpi_processor pr,
2a908002	163	int state, bool force);
01854e69	164
4be44fcd LB	165	u32 address;
	166	u8 duty_offset;
	167	u8 duty_width;
1180509f ZY	168	u8 tsd_valid_flag;
1180509f ZY	169	unsigned int shared_type;
1da177e4 LT	170	struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
	171	};
	172
	173	/* Limit Interface */
	174
	175	struct acpi_processor_lx {
aee07ba6	176	int px; /* performance state */
4be44fcd	177	int tx; /* throttle level */
1da177e4 LT	178	};
	179
	180	struct acpi_processor_limit {
4be44fcd	181	struct acpi_processor_lx state; /* current limit */
1da177e4	182	struct acpi_processor_lx thermal; /* thermal limit */
4be44fcd	183	struct acpi_processor_lx user; /* user limit */
1da177e4 LT	184	};
1da177e4 LT	185
1da177e4	186	struct acpi_processor_flags {
4be44fcd LB	187	u8 power:1;
	188	u8 performance:1;
	189	u8 throttling:1;
	190	u8 limit:1;
	191	u8 bm_control:1;
	192	u8 bm_check:1;
	193	u8 has_cst:1;
	194	u8 power_setup_done:1;
4f86d3a8	195	u8 bm_rld_set:1;
99b72508	196	u8 need_hotplug_init:1;
1da177e4 LT	197	};
	198
	199	struct acpi_processor {
4be44fcd LB	200	acpi_handle handle;
4be44fcd LB	201	u32 acpi_id;
ca9f62ac	202	u32 apic_id;
4be44fcd LB	203	u32 id;
	204	u32 pblk;
	205	int performance_platform_limit;
01854e69	206	int throttling_platform_limit;
ff55a9ce	207	/* 0 - states 0..n-th state available */
01854e69	208
1da177e4 LT	209	struct acpi_processor_flags flags;
	210	struct acpi_processor_power power;
	211	struct acpi_processor_performance *performance;
	212	struct acpi_processor_throttling throttling;
	213	struct acpi_processor_limit limit;
d9460fd2	214	struct thermal_cooling_device *cdev;
ac212b69	215	struct device dev; / Processor device. */
1da177e4 LT	216	};
	217
	218	struct acpi_processor_errata {
4be44fcd	219	u8 smp;
1da177e4	220	struct {
4be44fcd LB	221	u8 throttle:1;
	222	u8 fdma:1;
	223	u8 reserved:6;
	224	u32 bmisx;
	225	} piix4;
1da177e4 LT	226	};
1da177e4 LT	227
fd350943 LB	228	extern int acpi_processor_preregister_performance(struct
fd350943 LB	229	acpi_processor_performance
a29d8b8e	230	__percpu *performance);
3b2d9942	231
4be44fcd LB	232	extern int acpi_processor_register_performance(struct acpi_processor_performance
	233	*performance, unsigned int cpu);
	234	extern void acpi_processor_unregister_performance(struct
	235	acpi_processor_performance
	236	*performance,
	237	unsigned int cpu);
1da177e4 LT	238
	239	/* note: this locks both the calling module and the processor module
	240	if a _PPC object exists, rmmod is disallowed then */
	241	int acpi_processor_notify_smm(struct module *calling_module);
	242
c705c78c KRW	243	/* parsing the _P* objects. */
	244	extern int acpi_processor_get_performance_info(struct acpi_processor *pr);
	245
1da177e4	246	/* for communication between multiple parts of the processor kernel module */
706546d0	247	DECLARE_PER_CPU(struct acpi_processor *, processors);
1da177e4 LT	248	extern struct acpi_processor_errata errata;
1da177e4 LT	249
05131ecc	250	#ifdef ARCH_HAS_POWER_INIT
02df8b93	251	void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
4be44fcd	252	unsigned int cpu);
991528d7	253	int acpi_processor_ffh_cstate_probe(unsigned int cpu,
fd350943 LB	254	struct acpi_processor_cx *cx,
fd350943 LB	255	struct acpi_power_register *reg);
991528d7	256	void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
02df8b93	257	#else
4be44fcd LB	258	static inline void acpi_processor_power_init_bm_check(struct
	259	acpi_processor_flags
	260	*flags, unsigned int cpu)
02df8b93 VP	261	{
	262	flags->bm_check = 1;
	263	return;
	264	}
991528d7	265	static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
fd350943 LB	266	struct acpi_processor_cx *cx,
	267	struct acpi_power_register
	268	*reg)
991528d7 VP	269	{
	270	return -1;
	271	}
fd350943 LB	272	static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
fd350943 LB	273	*cstate)
991528d7 VP	274	{
	275	return;
	276	}
02df8b93 VP	277	#endif
02df8b93 VP	278
1da177e4	279	/* in processor_perflib.c */
02df8b93	280
1da177e4 LT	281	#ifdef CONFIG_CPU_FREQ
	282	void acpi_processor_ppc_init(void);
	283	void acpi_processor_ppc_exit(void);
d81c45e1	284	int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag);
e2f74f35	285	extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit);
1da177e4	286	#else
4be44fcd LB	287	static inline void acpi_processor_ppc_init(void)
	288	{
	289	return;
	290	}
	291	static inline void acpi_processor_ppc_exit(void)
	292	{
	293	return;
	294	}
d81c45e1 ZY	295	static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr,
d81c45e1 ZY	296	int event_flag)
4be44fcd	297	{
1da177e4 LT	298	static unsigned int printout = 1;
1da177e4 LT	299	if (printout) {
4be44fcd LB	300	printk(KERN_WARNING
	301	"Warning: Processor Platform Limit event detected, but not handled.\n");
	302	printk(KERN_WARNING
	303	"Consider compiling CPUfreq support into your kernel.\n");
1da177e4 LT	304	printout = 0;
	305	}
	306	return 0;
	307	}
e2f74f35 TR	308	static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
	309	{
	310	return -ENODEV;
	311	}
	312
4be44fcd	313	#endif /* CONFIG_CPU_FREQ */
1da177e4	314
4d5d4cd8	315	/* in processor_core.c */
43bab25c	316	void acpi_processor_set_pdc(acpi_handle handle);
ca9f62ac JL	317	int acpi_get_apicid(acpi_handle, int type, u32 acpi_id);
ca9f62ac JL	318	int acpi_map_cpuid(int apic_id, u32 acpi_id);
2e9d5e4e	319	int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);
78f16996	320
1da177e4	321	/* in processor_throttling.c */
a66b34b2	322	int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
4be44fcd	323	int acpi_processor_get_throttling_info(struct acpi_processor *pr);
2a908002 FP	324	extern int acpi_processor_set_throttling(struct acpi_processor *pr,
2a908002 FP	325	int state, bool force);
5a344a50 ZY	326	/*
	327	* Reevaluate whether the T-state is invalid after one cpu is
	328	* onlined/offlined. In such case the flags.throttling will be updated.
	329	*/
	330	extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
	331	unsigned long action);
070d8eb1	332	extern const struct file_operations acpi_processor_throttling_fops;
1180509f	333	extern void acpi_processor_throttling_init(void);
1da177e4	334	/* in processor_idle.c */
38a991b6 DL	335	int acpi_processor_power_init(struct acpi_processor *pr);
38a991b6 DL	336	int acpi_processor_power_exit(struct acpi_processor *pr);
4be44fcd	337	int acpi_processor_cst_has_changed(struct acpi_processor *pr);
46bcfad7	338	int acpi_processor_hotplug(struct acpi_processor *pr);
4f86d3a8	339	extern struct cpuidle_driver acpi_idle_driver;
1da177e4	340
0a3b15ac RW	341	#ifdef CONFIG_PM_SLEEP
	342	void acpi_processor_syscore_init(void);
	343	void acpi_processor_syscore_exit(void);
	344	#else
	345	static inline void acpi_processor_syscore_init(void) {}
	346	static inline void acpi_processor_syscore_exit(void) {}
	347	#endif
	348
1da177e4	349	/* in processor_thermal.c */
4be44fcd	350	int acpi_processor_get_limit_info(struct acpi_processor *pr);
9c8b04be	351	extern const struct thermal_cooling_device_ops processor_cooling_ops;
1da177e4 LT	352	#ifdef CONFIG_CPU_FREQ
	353	void acpi_thermal_cpufreq_init(void);
	354	void acpi_thermal_cpufreq_exit(void);
	355	#else
4be44fcd LB	356	static inline void acpi_thermal_cpufreq_init(void)
	357	{
	358	return;
	359	}
	360	static inline void acpi_thermal_cpufreq_exit(void)
	361	{
	362	return;
	363	}
1da177e4 LT	364	#endif
1da177e4 LT	365
1da177e4	366	#endif