[linux-2.6-block.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_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);

/* 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);
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 */
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,
			unsigned long action);
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,
			unsigned long action) {}

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