[mirror_ubuntu-focal-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/cpufreq.h>
#include <linux/pm_qos.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 dev_pm_qos_request perflib_req;
	struct dev_pm_qos_request thermal_req;
};

struct acpi_processor_errata {
	u8 smp;
	struct {
		u8 throttle:1;
		u8 fdma:1;
		u8 reserved:6;
		u32 bmisx;
	} piix4;
};

extern int acpi_processor_preregister_performance(struct
						  acpi_processor_performance
						  __percpu *performance);

extern int acpi_processor_register_performance(struct acpi_processor_performance
					       *performance, unsigned int cpu);
extern void acpi_processor_unregister_performance(unsigned int cpu);

int acpi_processor_pstate_control(void);
/* note: this locks both the calling module and the processor module
         if a _PPC object exists, rmmod is disallowed then */
int acpi_processor_notify_smm(struct module *calling_module);
int acpi_processor_get_psd(acpi_handle handle,
			   struct acpi_psd_package *pdomain);

/* parsing the _P* objects. */
extern int acpi_processor_get_performance_info(struct acpi_processor *pr);

/* for communication between multiple parts of the processor kernel module */
DECLARE_PER_CPU(struct acpi_processor *, processors);
extern struct acpi_processor_errata errata;

#if defined(ARCH_HAS_POWER_INIT) && defined(CONFIG_ACPI_PROCESSOR_CSTATE)
void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
					unsigned int cpu);
int acpi_processor_ffh_cstate_probe(unsigned int cpu,
				    struct acpi_processor_cx *cx,
				    struct acpi_power_register *reg);
void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
#else
static inline void acpi_processor_power_init_bm_check(struct
						      acpi_processor_flags
						      *flags, unsigned int cpu)
{
	flags->bm_check = 1;
	return;
}
static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
						  struct acpi_processor_cx *cx,
						  struct acpi_power_register
						  *reg)
{
	return -1;
}
static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
						   *cstate)
{
	return;
}
#endif

/* in processor_perflib.c */

#ifdef CONFIG_CPU_FREQ
extern bool acpi_processor_cpufreq_init;
void acpi_processor_ignore_ppc_init(void);
void acpi_processor_ppc_init(int cpu);
void acpi_processor_ppc_exit(int cpu);
void acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag);
extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit);
#else
static inline void acpi_processor_ignore_ppc_init(void)
{
	return;
}
static inline void acpi_processor_ppc_init(int cpu)
{
	return;
}
static inline void acpi_processor_ppc_exit(int cpu)
{
	return;
}
static inline void acpi_processor_ppc_has_changed(struct acpi_processor *pr,
								int event_flag)
{
	static unsigned int printout = 1;
	if (printout) {
		printk(KERN_WARNING
		       "Warning: Processor Platform Limit event detected, but not handled.\n");
		printk(KERN_WARNING
		       "Consider compiling CPUfreq support into your kernel.\n");
		printout = 0;
	}
}
static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
{
	return -ENODEV;
}

#endif				/* CONFIG_CPU_FREQ */

/* in processor_core.c */
phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id);
phys_cpuid_t acpi_map_madt_entry(u32 acpi_id);
int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id);
int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);

#ifdef CONFIG_ACPI_CPPC_LIB
extern int acpi_cppc_processor_probe(struct acpi_processor *pr);
extern void acpi_cppc_processor_exit(struct acpi_processor *pr);
#else
static inline int acpi_cppc_processor_probe(struct acpi_processor *pr)
{
	return 0;
}
static inline void acpi_cppc_processor_exit(struct acpi_processor *pr)
{
	return;
}
#endif	/* CONFIG_ACPI_CPPC_LIB */

/* in processor_pdc.c */
void acpi_processor_set_pdc(acpi_handle handle);

/* in processor_throttling.c */
#ifdef CONFIG_ACPI_CPU_FREQ_PSS
int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
int acpi_processor_get_throttling_info(struct acpi_processor *pr);
extern int acpi_processor_set_throttling(struct acpi_processor *pr,
					 int state, bool force);
/*
 * Reevaluate whether the T-state is invalid after one cpu is
 * onlined/offlined. In such case the flags.throttling will be updated.
 */
extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
			bool is_dead);
extern const struct file_operations acpi_processor_throttling_fops;
extern void acpi_processor_throttling_init(void);
#else
static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
{
	return 0;
}

static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr)
{
	return -ENODEV;
}

static inline int acpi_processor_set_throttling(struct acpi_processor *pr,
					 int state, bool force)
{
	return -ENODEV;
}

static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
			bool is_dead) {}

static inline void acpi_processor_throttling_init(void) {}
#endif	/* CONFIG_ACPI_CPU_FREQ_PSS */

/* in processor_idle.c */
extern struct cpuidle_driver acpi_idle_driver;
#ifdef CONFIG_ACPI_PROCESSOR_IDLE
int acpi_processor_power_init(struct acpi_processor *pr);
int acpi_processor_power_exit(struct acpi_processor *pr);
int acpi_processor_power_state_has_changed(struct acpi_processor *pr);
int acpi_processor_hotplug(struct acpi_processor *pr);
#else
static inline int acpi_processor_power_init(struct acpi_processor *pr)
{
	return -ENODEV;
}

static inline int acpi_processor_power_exit(struct acpi_processor *pr)
{
	return -ENODEV;
}

static inline int acpi_processor_power_state_has_changed(struct acpi_processor *pr)
{
	return -ENODEV;
}

static inline int acpi_processor_hotplug(struct acpi_processor *pr)
{
	return -ENODEV;
}
#endif /* CONFIG_ACPI_PROCESSOR_IDLE */

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