[linux-2.6-block.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);
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

/* 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);
4d0f1ce6 JM	257	int acpi_processor_get_psd(acpi_handle handle,
4d0f1ce6 JM	258	struct acpi_psd_package *pdomain);
1da177e4	259
c705c78c KRW	260	/* parsing the _P* objects. */
	261	extern int acpi_processor_get_performance_info(struct acpi_processor *pr);
	262
1da177e4	263	/* for communication between multiple parts of the processor kernel module */
706546d0	264	DECLARE_PER_CPU(struct acpi_processor *, processors);
1da177e4 LT	265	extern struct acpi_processor_errata errata;
1da177e4 LT	266
35ae7133	267	#if defined(ARCH_HAS_POWER_INIT) && defined(CONFIG_ACPI_PROCESSOR_CSTATE)
02df8b93	268	void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
4be44fcd	269	unsigned int cpu);
991528d7	270	int acpi_processor_ffh_cstate_probe(unsigned int cpu,
fd350943 LB	271	struct acpi_processor_cx *cx,
fd350943 LB	272	struct acpi_power_register *reg);
991528d7	273	void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
02df8b93	274	#else
4be44fcd LB	275	static inline void acpi_processor_power_init_bm_check(struct
	276	acpi_processor_flags
	277	*flags, unsigned int cpu)
02df8b93 VP	278	{
	279	flags->bm_check = 1;
	280	return;
	281	}
991528d7	282	static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
fd350943 LB	283	struct acpi_processor_cx *cx,
	284	struct acpi_power_register
	285	*reg)
991528d7 VP	286	{
	287	return -1;
	288	}
fd350943 LB	289	static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
fd350943 LB	290	*cstate)
991528d7 VP	291	{
	292	return;
	293	}
02df8b93 VP	294	#endif
02df8b93 VP	295
1da177e4	296	/* in processor_perflib.c */
02df8b93	297
1da177e4 LT	298	#ifdef CONFIG_CPU_FREQ
	299	void acpi_processor_ppc_init(void);
	300	void acpi_processor_ppc_exit(void);
bca5f557	301	void acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag);
e2f74f35	302	extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit);
1da177e4	303	#else
4be44fcd LB	304	static inline void acpi_processor_ppc_init(void)
	305	{
	306	return;
	307	}
	308	static inline void acpi_processor_ppc_exit(void)
	309	{
	310	return;
	311	}
d81c45e1 ZY	312	static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr,
d81c45e1 ZY	313	int event_flag)
4be44fcd	314	{
1da177e4 LT	315	static unsigned int printout = 1;
1da177e4 LT	316	if (printout) {
4be44fcd LB	317	printk(KERN_WARNING
	318	"Warning: Processor Platform Limit event detected, but not handled.\n");
	319	printk(KERN_WARNING
	320	"Consider compiling CPUfreq support into your kernel.\n");
1da177e4 LT	321	printout = 0;
	322	}
	323	return 0;
	324	}
e2f74f35 TR	325	static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
	326	{
	327	return -ENODEV;
	328	}
	329
4be44fcd	330	#endif /* CONFIG_CPU_FREQ */
1da177e4	331
4d5d4cd8	332	/* in processor_core.c */
828aef37	333	phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id);
fb7c2bae	334	phys_cpuid_t acpi_map_madt_entry(u32 acpi_id);
828aef37	335	int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id);
2e9d5e4e	336	int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);
78f16996	337
4f2f7573 AC	338	#ifdef CONFIG_ACPI_CPPC_LIB
	339	extern int acpi_cppc_processor_probe(struct acpi_processor *pr);
	340	extern void acpi_cppc_processor_exit(struct acpi_processor *pr);
	341	#else
	342	static inline int acpi_cppc_processor_probe(struct acpi_processor *pr)
	343	{
	344	return 0;
	345	}
	346	static inline void acpi_cppc_processor_exit(struct acpi_processor *pr)
	347	{
	348	return;
	349	}
	350	#endif /* CONFIG_ACPI_CPPC_LIB */
	351
24119a88 HG	352	/* in processor_pdc.c */
	353	void acpi_processor_set_pdc(acpi_handle handle);
	354
1da177e4	355	/* in processor_throttling.c */
239708a3	356	#ifdef CONFIG_ACPI_CPU_FREQ_PSS
a66b34b2	357	int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
4be44fcd	358	int acpi_processor_get_throttling_info(struct acpi_processor *pr);
2a908002 FP	359	extern int acpi_processor_set_throttling(struct acpi_processor *pr,
2a908002 FP	360	int state, bool force);
5a344a50 ZY	361	/*
	362	* Reevaluate whether the T-state is invalid after one cpu is
	363	* onlined/offlined. In such case the flags.throttling will be updated.
	364	*/
	365	extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
64f3bf2f	366	bool is_dead);
070d8eb1	367	extern const struct file_operations acpi_processor_throttling_fops;
1180509f	368	extern void acpi_processor_throttling_init(void);
239708a3 AC	369	#else
	370	static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
	371	{
	372	return 0;
	373	}
	374
	375	static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr)
	376	{
	377	return -ENODEV;
	378	}
	379
	380	static inline int acpi_processor_set_throttling(struct acpi_processor *pr,
	381	int state, bool force)
	382	{
	383	return -ENODEV;
	384	}
	385
	386	static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
64f3bf2f	387	bool is_dead) {}
239708a3 AC	388
	389	static inline void acpi_processor_throttling_init(void) {}
	390	#endif /* CONFIG_ACPI_CPU_FREQ_PSS */
	391
1da177e4	392	/* in processor_idle.c */
5f05586c AC	393	extern struct cpuidle_driver acpi_idle_driver;
5f05586c AC	394	#ifdef CONFIG_ACPI_PROCESSOR_IDLE
38a991b6 DL	395	int acpi_processor_power_init(struct acpi_processor *pr);
38a991b6 DL	396	int acpi_processor_power_exit(struct acpi_processor *pr);
a36a7fec	397	int acpi_processor_power_state_has_changed(struct acpi_processor *pr);
46bcfad7	398	int acpi_processor_hotplug(struct acpi_processor *pr);
5f05586c AC	399	#else
	400	static inline int acpi_processor_power_init(struct acpi_processor *pr)
	401	{
	402	return -ENODEV;
	403	}
	404
	405	static inline int acpi_processor_power_exit(struct acpi_processor *pr)
	406	{
	407	return -ENODEV;
	408	}
	409
a36a7fec	410	static inline int acpi_processor_power_state_has_changed(struct acpi_processor *pr)
5f05586c AC	411	{
	412	return -ENODEV;
	413	}
	414
	415	static inline int acpi_processor_hotplug(struct acpi_processor *pr)
	416	{
	417	return -ENODEV;
	418	}
	419	#endif /* CONFIG_ACPI_PROCESSOR_IDLE */
1da177e4 LT	420
1da177e4 LT	421	/* in processor_thermal.c */
4be44fcd	422	int acpi_processor_get_limit_info(struct acpi_processor *pr);
9c8b04be	423	extern const struct thermal_cooling_device_ops processor_cooling_ops;
239708a3	424	#if defined(CONFIG_ACPI_CPU_FREQ_PSS) & defined(CONFIG_CPU_FREQ)
1da177e4 LT	425	void acpi_thermal_cpufreq_init(void);
	426	void acpi_thermal_cpufreq_exit(void);
	427	#else
4be44fcd LB	428	static inline void acpi_thermal_cpufreq_init(void)
	429	{
	430	return;
	431	}
	432	static inline void acpi_thermal_cpufreq_exit(void)
	433	{
	434	return;
	435	}
239708a3	436	#endif /* CONFIG_ACPI_CPU_FREQ_PSS */
1da177e4	437
1da177e4	438	#endif