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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __ACPI_PROCESSOR_H
2#define __ACPI_PROCESSOR_H
3
4#include <linux/kernel.h>
Venkatesh Pallipadi3b2d9942005-12-14 15:05:00 -05005#include <linux/cpu.h>
Zhang Ruid9460fd222008-01-17 15:51:23 +08006#include <linux/thermal.h>
Venkatesh Pallipadi02df8b92005-04-15 15:07:10 -04007#include <asm/acpi.h>
8
Rafael J. Wysockiac212b62013-05-03 00:26:22 +02009#define ACPI_PROCESSOR_CLASS "processor"
10#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
11#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
12
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#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
Venkatesh Pallipadi02df8b92005-04-15 15:07:10 -040023#define ACPI_PDC_REVISION_ID 0x1
24
Len Brownfd350942007-05-09 23:34:35 -040025#define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
Venkatesh Pallipadi3b2d9942005-12-14 15:05:00 -050026#define ACPI_PSD_REV0_ENTRIES 5
27
Luming Yu01854e62007-05-26 22:49:58 +080028#define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
29#define ACPI_TSD_REV0_ENTRIES 5
Venkatesh Pallipadi3b2d9942005-12-14 15:05:00 -050030/*
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
Venkatesh Pallipadi4fcb2fc2008-02-11 17:46:31 -080038#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
Venkatesh Pallipadi991528d2006-09-25 16:28:13 -070043
Linus Torvalds1da177e2005-04-16 15:20:36 -070044/* Power Management */
45
46struct acpi_processor_cx;
47
48struct acpi_power_register {
Len Brown4be44fc2005-08-05 00:44:28 -040049 u8 descriptor;
50 u16 length;
51 u8 space_id;
52 u8 bit_width;
53 u8 bit_offset;
Len Brown718be4a2010-07-22 16:54:27 -040054 u8 access_size;
Len Brown4be44fc2005-08-05 00:44:28 -040055 u64 address;
Linus Torvalds1da177e2005-04-16 15:20:36 -070056} __attribute__ ((packed));
57
Linus Torvalds1da177e2005-04-16 15:20:36 -070058struct acpi_processor_cx {
Len Brown4be44fc2005-08-05 00:44:28 -040059 u8 valid;
60 u8 type;
61 u32 address;
venkatesh.pallipadi@intel.combc71bec2008-01-31 17:35:04 -080062 u8 entry_method;
Venkatesh Pallipadi991528d2006-09-25 16:28:13 -070063 u8 index;
Len Brown4be44fc2005-08-05 00:44:28 -040064 u32 latency;
Len Brown718be4a2010-07-22 16:54:27 -040065 u8 bm_sts_skip;
Venkatesh Pallipadi4fcb2fc2008-02-11 17:46:31 -080066 char desc[ACPI_CX_DESC_LEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -070067};
68
69struct acpi_processor_power {
70 struct acpi_processor_cx *state;
Len Brown4be44fc2005-08-05 00:44:28 -040071 unsigned long bm_check_timestamp;
72 u32 default_state;
Len Brown4be44fc2005-08-05 00:44:28 -040073 int count;
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
Thomas Gleixner169a0ab2007-02-16 01:27:55 -080075 int timer_broadcast_on_state;
Linus Torvalds1da177e2005-04-16 15:20:36 -070076};
77
78/* Performance Management */
79
Venkatesh Pallipadi3b2d9942005-12-14 15:05:00 -050080struct acpi_psd_package {
Lin Ming439913f2010-01-28 10:53:19 +080081 u64 num_entries;
82 u64 revision;
83 u64 domain;
84 u64 coord_type;
85 u64 num_processors;
Venkatesh Pallipadi3b2d9942005-12-14 15:05:00 -050086} __attribute__ ((packed));
87
Linus Torvalds1da177e2005-04-16 15:20:36 -070088struct acpi_pct_register {
Len Brown4be44fc2005-08-05 00:44:28 -040089 u8 descriptor;
90 u16 length;
91 u8 space_id;
92 u8 bit_width;
93 u8 bit_offset;
94 u8 reserved;
95 u64 address;
Linus Torvalds1da177e2005-04-16 15:20:36 -070096} __attribute__ ((packed));
97
98struct acpi_processor_px {
Lin Ming439913f2010-01-28 10:53:19 +080099 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105};
106
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107struct acpi_processor_performance {
Len Brown4be44fc2005-08-05 00:44:28 -0400108 unsigned int state;
109 unsigned int platform_limit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 struct acpi_pct_register control_register;
111 struct acpi_pct_register status_register;
Len Brown4be44fc2005-08-05 00:44:28 -0400112 unsigned int state_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113 struct acpi_processor_px *states;
Venkatesh Pallipadi3b2d9942005-12-14 15:05:00 -0500114 struct acpi_psd_package domain_info;
Rusty Russell2fdf66b2008-12-31 18:08:47 -0800115 cpumask_var_t shared_cpu_map;
Venkatesh Pallipadi3b2d9942005-12-14 15:05:00 -0500116 unsigned int shared_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117};
118
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119/* Throttling Control */
120
Luming Yu01854e62007-05-26 22:49:58 +0800121struct acpi_tsd_package {
Lin Ming439913f2010-01-28 10:53:19 +0800122 u64 num_entries;
123 u64 revision;
124 u64 domain;
125 u64 coord_type;
126 u64 num_processors;
Luming Yu01854e62007-05-26 22:49:58 +0800127} __attribute__ ((packed));
128
129struct 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
139struct acpi_processor_tx_tss {
Lin Ming439913f2010-01-28 10:53:19 +0800140 u64 freqpercentage; /* */
141 u64 power; /* milliWatts */
142 u64 transition_latency; /* microseconds */
143 u64 control; /* control value */
144 u64 status; /* success indicator */
Luming Yu01854e62007-05-26 22:49:58 +0800145};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146struct acpi_processor_tx {
Len Brown4be44fc2005-08-05 00:44:28 -0400147 u16 power;
148 u16 performance;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149};
150
Luming Yu01854e62007-05-26 22:49:58 +0800151struct acpi_processor;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152struct acpi_processor_throttling {
Luming Yu01854e62007-05-26 22:49:58 +0800153 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;
Rusty Russell2fdf66b2008-12-31 18:08:47 -0800160 cpumask_var_t shared_cpu_map;
Len Brownff55a9c2007-06-02 00:15:25 -0400161 int (*acpi_processor_get_throttling) (struct acpi_processor * pr);
162 int (*acpi_processor_set_throttling) (struct acpi_processor * pr,
Frans Pop2a908002009-08-26 14:29:29 -0700163 int state, bool force);
Luming Yu01854e62007-05-26 22:49:58 +0800164
Len Brown4be44fc2005-08-05 00:44:28 -0400165 u32 address;
166 u8 duty_offset;
167 u8 duty_width;
Zhao Yakui11805092008-01-28 13:53:42 +0800168 u8 tsd_valid_flag;
169 unsigned int shared_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
171};
172
173/* Limit Interface */
174
175struct acpi_processor_lx {
Joe Perchesaee07ba2008-02-03 17:07:16 +0200176 int px; /* performance state */
Len Brown4be44fc2005-08-05 00:44:28 -0400177 int tx; /* throttle level */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178};
179
180struct acpi_processor_limit {
Len Brown4be44fc2005-08-05 00:44:28 -0400181 struct acpi_processor_lx state; /* current limit */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 struct acpi_processor_lx thermal; /* thermal limit */
Len Brown4be44fc2005-08-05 00:44:28 -0400183 struct acpi_processor_lx user; /* user limit */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184};
185
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186struct acpi_processor_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400187 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;
Len Brown4f86d3a2007-10-03 18:58:00 -0400195 u8 bm_rld_set:1;
Thomas Renninger99b72502012-01-19 18:18:43 +0100196 u8 need_hotplug_init:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197};
198
199struct acpi_processor {
Len Brown4be44fc2005-08-05 00:44:28 -0400200 acpi_handle handle;
201 u32 acpi_id;
Jiang Liuca9f62a2013-09-02 11:57:34 +0800202 u32 apic_id;
Len Brown4be44fc2005-08-05 00:44:28 -0400203 u32 id;
204 u32 pblk;
205 int performance_platform_limit;
Luming Yu01854e62007-05-26 22:49:58 +0800206 int throttling_platform_limit;
Len Brownff55a9c2007-06-02 00:15:25 -0400207 /* 0 - states 0..n-th state available */
Luming Yu01854e62007-05-26 22:49:58 +0800208
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 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;
Zhang Ruid9460fd222008-01-17 15:51:23 +0800214 struct thermal_cooling_device *cdev;
Rafael J. Wysockiac212b62013-05-03 00:26:22 +0200215 struct device *dev; /* Processor device. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216};
217
218struct acpi_processor_errata {
Len Brown4be44fc2005-08-05 00:44:28 -0400219 u8 smp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 struct {
Len Brown4be44fc2005-08-05 00:44:28 -0400221 u8 throttle:1;
222 u8 fdma:1;
223 u8 reserved:6;
224 u32 bmisx;
225 } piix4;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226};
227
Len Brownfd350942007-05-09 23:34:35 -0400228extern int acpi_processor_preregister_performance(struct
229 acpi_processor_performance
Tejun Heoa29d8b82010-02-02 14:39:15 +0900230 __percpu *performance);
Venkatesh Pallipadi3b2d9942005-12-14 15:05:00 -0500231
Len Brown4be44fc2005-08-05 00:44:28 -0400232extern int acpi_processor_register_performance(struct acpi_processor_performance
233 *performance, unsigned int cpu);
234extern void acpi_processor_unregister_performance(struct
235 acpi_processor_performance
236 *performance,
237 unsigned int cpu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238
239/* note: this locks both the calling module and the processor module
240 if a _PPC object exists, rmmod is disallowed then */
241int acpi_processor_notify_smm(struct module *calling_module);
242
Konrad Rzeszutek Wilkc705c782013-03-05 13:42:54 -0500243/* parsing the _P* objects. */
244extern int acpi_processor_get_performance_info(struct acpi_processor *pr);
245
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246/* for communication between multiple parts of the processor kernel module */
Mike Travis706546d2008-06-09 16:22:23 -0700247DECLARE_PER_CPU(struct acpi_processor *, processors);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248extern struct acpi_processor_errata errata;
249
Venkatesh Pallipadi05131ec2005-10-23 16:31:00 -0400250#ifdef ARCH_HAS_POWER_INIT
Venkatesh Pallipadi02df8b92005-04-15 15:07:10 -0400251void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
Len Brown4be44fc2005-08-05 00:44:28 -0400252 unsigned int cpu);
Venkatesh Pallipadi991528d2006-09-25 16:28:13 -0700253int acpi_processor_ffh_cstate_probe(unsigned int cpu,
Len Brownfd350942007-05-09 23:34:35 -0400254 struct acpi_processor_cx *cx,
255 struct acpi_power_register *reg);
Venkatesh Pallipadi991528d2006-09-25 16:28:13 -0700256void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
Venkatesh Pallipadi02df8b92005-04-15 15:07:10 -0400257#else
Len Brown4be44fc2005-08-05 00:44:28 -0400258static inline void acpi_processor_power_init_bm_check(struct
259 acpi_processor_flags
260 *flags, unsigned int cpu)
Venkatesh Pallipadi02df8b92005-04-15 15:07:10 -0400261{
262 flags->bm_check = 1;
263 return;
264}
Venkatesh Pallipadi991528d2006-09-25 16:28:13 -0700265static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
Len Brownfd350942007-05-09 23:34:35 -0400266 struct acpi_processor_cx *cx,
267 struct acpi_power_register
268 *reg)
Venkatesh Pallipadi991528d2006-09-25 16:28:13 -0700269{
270 return -1;
271}
Len Brownfd350942007-05-09 23:34:35 -0400272static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
273 *cstate)
Venkatesh Pallipadi991528d2006-09-25 16:28:13 -0700274{
275 return;
276}
Venkatesh Pallipadi02df8b92005-04-15 15:07:10 -0400277#endif
278
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279/* in processor_perflib.c */
Venkatesh Pallipadi02df8b92005-04-15 15:07:10 -0400280
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281#ifdef CONFIG_CPU_FREQ
282void acpi_processor_ppc_init(void);
283void acpi_processor_ppc_exit(void);
Zhao Yakuid81c45e12009-10-16 09:20:41 +0800284int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag);
Thomas Renningere2f74f32009-11-19 12:31:01 +0100285extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286#else
Len Brown4be44fc2005-08-05 00:44:28 -0400287static inline void acpi_processor_ppc_init(void)
288{
289 return;
290}
291static inline void acpi_processor_ppc_exit(void)
292{
293 return;
294}
Zhao Yakuid81c45e12009-10-16 09:20:41 +0800295static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr,
296 int event_flag)
Len Brown4be44fc2005-08-05 00:44:28 -0400297{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 static unsigned int printout = 1;
299 if (printout) {
Len Brown4be44fc2005-08-05 00:44:28 -0400300 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");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 printout = 0;
305 }
306 return 0;
307}
Thomas Renningere2f74f32009-11-19 12:31:01 +0100308static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit)
309{
310 return -ENODEV;
311}
312
Len Brown4be44fc2005-08-05 00:44:28 -0400313#endif /* CONFIG_CPU_FREQ */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314
Alex Chiang4d5d4cd2010-02-22 12:11:14 -0700315/* in processor_core.c */
Alex Chiang43bab252009-12-20 12:23:16 -0700316void acpi_processor_set_pdc(acpi_handle handle);
Jiang Liuca9f62a2013-09-02 11:57:34 +0800317int acpi_get_apicid(acpi_handle, int type, u32 acpi_id);
318int acpi_map_cpuid(int apic_id, u32 acpi_id);
Alex Chiang2e9d5e42010-02-22 12:11:19 -0700319int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id);
Alex Chiang78f16992009-12-20 12:19:09 -0700320
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321/* in processor_throttling.c */
Adrian Bunka66b34b2008-06-09 16:22:24 -0700322int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
Len Brown4be44fc2005-08-05 00:44:28 -0400323int acpi_processor_get_throttling_info(struct acpi_processor *pr);
Frans Pop2a908002009-08-26 14:29:29 -0700324extern int acpi_processor_set_throttling(struct acpi_processor *pr,
325 int state, bool force);
Zhao Yakui5a344a52011-01-10 16:35:45 +0800326/*
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 */
330extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr,
331 unsigned long action);
Jan Engelhardt070d8eb2009-01-12 00:07:55 +0100332extern const struct file_operations acpi_processor_throttling_fops;
Zhao Yakui11805092008-01-28 13:53:42 +0800333extern void acpi_processor_throttling_init(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334/* in processor_idle.c */
Daniel Lezcano38a991b2012-09-15 22:42:54 +0200335int acpi_processor_power_init(struct acpi_processor *pr);
336int acpi_processor_power_exit(struct acpi_processor *pr);
Len Brown4be44fc2005-08-05 00:44:28 -0400337int acpi_processor_cst_has_changed(struct acpi_processor *pr);
Deepthi Dharwar46bcfad2011-10-28 16:20:42 +0530338int acpi_processor_hotplug(struct acpi_processor *pr);
Len Brown4f86d3a2007-10-03 18:58:00 -0400339extern struct cpuidle_driver acpi_idle_driver;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Rafael J. Wysocki0a3b15a2013-05-02 21:54:37 +0200341#ifdef CONFIG_PM_SLEEP
342void acpi_processor_syscore_init(void);
343void acpi_processor_syscore_exit(void);
344#else
345static inline void acpi_processor_syscore_init(void) {}
346static inline void acpi_processor_syscore_exit(void) {}
347#endif
348
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349/* in processor_thermal.c */
Len Brown4be44fc2005-08-05 00:44:28 -0400350int acpi_processor_get_limit_info(struct acpi_processor *pr);
Vasiliy Kulikov9c8b04b2011-06-25 21:07:52 +0400351extern const struct thermal_cooling_device_ops processor_cooling_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352#ifdef CONFIG_CPU_FREQ
353void acpi_thermal_cpufreq_init(void);
354void acpi_thermal_cpufreq_exit(void);
355#else
Len Brown4be44fc2005-08-05 00:44:28 -0400356static inline void acpi_thermal_cpufreq_init(void)
357{
358 return;
359}
360static inline void acpi_thermal_cpufreq_exit(void)
361{
362 return;
363}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364#endif
365
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366#endif