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1da177e4 LT |
1 | #ifndef __ACPI_PROCESSOR_H |
2 | #define __ACPI_PROCESSOR_H | |
3 | ||
4 | #include <linux/kernel.h> | |
3b2d9942 | 5 | #include <linux/cpu.h> |
4f86d3a8 | 6 | #include <linux/cpuidle.h> |
d9460fd2 | 7 | #include <linux/thermal.h> |
02df8b93 VP |
8 | #include <asm/acpi.h> |
9 | ||
1da177e4 LT |
10 | #define ACPI_PROCESSOR_BUSY_METRIC 10 |
11 | ||
12 | #define ACPI_PROCESSOR_MAX_POWER 8 | |
13 | #define ACPI_PROCESSOR_MAX_C2_LATENCY 100 | |
14 | #define ACPI_PROCESSOR_MAX_C3_LATENCY 1000 | |
15 | ||
16 | #define ACPI_PROCESSOR_MAX_THROTTLING 16 | |
17 | #define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */ | |
18 | #define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4 | |
19 | ||
02df8b93 VP |
20 | #define ACPI_PDC_REVISION_ID 0x1 |
21 | ||
fd350943 | 22 | #define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */ |
3b2d9942 VP |
23 | #define ACPI_PSD_REV0_ENTRIES 5 |
24 | ||
01854e69 LY |
25 | #define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */ |
26 | #define ACPI_TSD_REV0_ENTRIES 5 | |
3b2d9942 VP |
27 | /* |
28 | * Types of coordination defined in ACPI 3.0. Same macros can be used across | |
29 | * P, C and T states | |
30 | */ | |
31 | #define DOMAIN_COORD_TYPE_SW_ALL 0xfc | |
32 | #define DOMAIN_COORD_TYPE_SW_ANY 0xfd | |
33 | #define DOMAIN_COORD_TYPE_HW_ALL 0xfe | |
34 | ||
4fcb2fcd VP |
35 | #define ACPI_CSTATE_SYSTEMIO 0 |
36 | #define ACPI_CSTATE_FFH 1 | |
37 | #define ACPI_CSTATE_HALT 2 | |
38 | ||
39 | #define ACPI_CX_DESC_LEN 32 | |
991528d7 | 40 | |
1da177e4 LT |
41 | /* Power Management */ |
42 | ||
43 | struct acpi_processor_cx; | |
44 | ||
45 | struct acpi_power_register { | |
4be44fcd LB |
46 | u8 descriptor; |
47 | u16 length; | |
48 | u8 space_id; | |
49 | u8 bit_width; | |
50 | u8 bit_offset; | |
51 | u8 reserved; | |
52 | u64 address; | |
1da177e4 LT |
53 | } __attribute__ ((packed)); |
54 | ||
1da177e4 | 55 | struct acpi_processor_cx_policy { |
4be44fcd | 56 | u32 count; |
1da177e4 LT |
57 | struct acpi_processor_cx *state; |
58 | struct { | |
4be44fcd LB |
59 | u32 time; |
60 | u32 ticks; | |
61 | u32 count; | |
62 | u32 bm; | |
63 | } threshold; | |
1da177e4 LT |
64 | }; |
65 | ||
66 | struct acpi_processor_cx { | |
4be44fcd LB |
67 | u8 valid; |
68 | u8 type; | |
69 | u32 address; | |
bc71bec9 | 70 | u8 entry_method; |
991528d7 | 71 | u8 index; |
4be44fcd LB |
72 | u32 latency; |
73 | u32 latency_ticks; | |
74 | u32 power; | |
75 | u32 usage; | |
a3c6598f | 76 | u64 time; |
1da177e4 LT |
77 | struct acpi_processor_cx_policy promotion; |
78 | struct acpi_processor_cx_policy demotion; | |
4fcb2fcd | 79 | char desc[ACPI_CX_DESC_LEN]; |
1da177e4 LT |
80 | }; |
81 | ||
82 | struct acpi_processor_power { | |
4f86d3a8 | 83 | struct cpuidle_device dev; |
1da177e4 | 84 | struct acpi_processor_cx *state; |
4be44fcd LB |
85 | unsigned long bm_check_timestamp; |
86 | u32 default_state; | |
4be44fcd | 87 | int count; |
1da177e4 | 88 | struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER]; |
169a0abb | 89 | int timer_broadcast_on_state; |
1da177e4 LT |
90 | }; |
91 | ||
92 | /* Performance Management */ | |
93 | ||
3b2d9942 | 94 | struct acpi_psd_package { |
439913ff LM |
95 | u64 num_entries; |
96 | u64 revision; | |
97 | u64 domain; | |
98 | u64 coord_type; | |
99 | u64 num_processors; | |
3b2d9942 VP |
100 | } __attribute__ ((packed)); |
101 | ||
1da177e4 | 102 | struct acpi_pct_register { |
4be44fcd LB |
103 | u8 descriptor; |
104 | u16 length; | |
105 | u8 space_id; | |
106 | u8 bit_width; | |
107 | u8 bit_offset; | |
108 | u8 reserved; | |
109 | u64 address; | |
1da177e4 LT |
110 | } __attribute__ ((packed)); |
111 | ||
112 | struct acpi_processor_px { | |
439913ff LM |
113 | u64 core_frequency; /* megahertz */ |
114 | u64 power; /* milliWatts */ | |
115 | u64 transition_latency; /* microseconds */ | |
116 | u64 bus_master_latency; /* microseconds */ | |
117 | u64 control; /* control value */ | |
118 | u64 status; /* success indicator */ | |
1da177e4 LT |
119 | }; |
120 | ||
1da177e4 | 121 | struct acpi_processor_performance { |
4be44fcd LB |
122 | unsigned int state; |
123 | unsigned int platform_limit; | |
1da177e4 LT |
124 | struct acpi_pct_register control_register; |
125 | struct acpi_pct_register status_register; | |
4be44fcd | 126 | unsigned int state_count; |
1da177e4 | 127 | struct acpi_processor_px *states; |
3b2d9942 | 128 | struct acpi_psd_package domain_info; |
2fdf66b4 | 129 | cpumask_var_t shared_cpu_map; |
3b2d9942 | 130 | unsigned int shared_type; |
1da177e4 LT |
131 | }; |
132 | ||
1da177e4 LT |
133 | /* Throttling Control */ |
134 | ||
01854e69 | 135 | struct acpi_tsd_package { |
439913ff LM |
136 | u64 num_entries; |
137 | u64 revision; | |
138 | u64 domain; | |
139 | u64 coord_type; | |
140 | u64 num_processors; | |
01854e69 LY |
141 | } __attribute__ ((packed)); |
142 | ||
143 | struct acpi_ptc_register { | |
144 | u8 descriptor; | |
145 | u16 length; | |
146 | u8 space_id; | |
147 | u8 bit_width; | |
148 | u8 bit_offset; | |
149 | u8 reserved; | |
150 | u64 address; | |
151 | } __attribute__ ((packed)); | |
152 | ||
153 | struct acpi_processor_tx_tss { | |
439913ff LM |
154 | u64 freqpercentage; /* */ |
155 | u64 power; /* milliWatts */ | |
156 | u64 transition_latency; /* microseconds */ | |
157 | u64 control; /* control value */ | |
158 | u64 status; /* success indicator */ | |
01854e69 | 159 | }; |
1da177e4 | 160 | struct acpi_processor_tx { |
4be44fcd LB |
161 | u16 power; |
162 | u16 performance; | |
1da177e4 LT |
163 | }; |
164 | ||
01854e69 | 165 | struct acpi_processor; |
1da177e4 | 166 | struct acpi_processor_throttling { |
01854e69 LY |
167 | unsigned int state; |
168 | unsigned int platform_limit; | |
169 | struct acpi_pct_register control_register; | |
170 | struct acpi_pct_register status_register; | |
171 | unsigned int state_count; | |
172 | struct acpi_processor_tx_tss *states_tss; | |
173 | struct acpi_tsd_package domain_info; | |
2fdf66b4 | 174 | cpumask_var_t shared_cpu_map; |
ff55a9ce LB |
175 | int (*acpi_processor_get_throttling) (struct acpi_processor * pr); |
176 | int (*acpi_processor_set_throttling) (struct acpi_processor * pr, | |
2a908002 | 177 | int state, bool force); |
01854e69 | 178 | |
4be44fcd LB |
179 | u32 address; |
180 | u8 duty_offset; | |
181 | u8 duty_width; | |
1180509f ZY |
182 | u8 tsd_valid_flag; |
183 | unsigned int shared_type; | |
1da177e4 LT |
184 | struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING]; |
185 | }; | |
186 | ||
187 | /* Limit Interface */ | |
188 | ||
189 | struct acpi_processor_lx { | |
aee07ba6 | 190 | int px; /* performance state */ |
4be44fcd | 191 | int tx; /* throttle level */ |
1da177e4 LT |
192 | }; |
193 | ||
194 | struct acpi_processor_limit { | |
4be44fcd | 195 | struct acpi_processor_lx state; /* current limit */ |
1da177e4 | 196 | struct acpi_processor_lx thermal; /* thermal limit */ |
4be44fcd | 197 | struct acpi_processor_lx user; /* user limit */ |
1da177e4 LT |
198 | }; |
199 | ||
1da177e4 | 200 | struct acpi_processor_flags { |
4be44fcd LB |
201 | u8 power:1; |
202 | u8 performance:1; | |
203 | u8 throttling:1; | |
204 | u8 limit:1; | |
205 | u8 bm_control:1; | |
206 | u8 bm_check:1; | |
207 | u8 has_cst:1; | |
208 | u8 power_setup_done:1; | |
4f86d3a8 | 209 | u8 bm_rld_set:1; |
1da177e4 LT |
210 | }; |
211 | ||
212 | struct acpi_processor { | |
4be44fcd LB |
213 | acpi_handle handle; |
214 | u32 acpi_id; | |
215 | u32 id; | |
216 | u32 pblk; | |
217 | int performance_platform_limit; | |
01854e69 | 218 | int throttling_platform_limit; |
ff55a9ce | 219 | /* 0 - states 0..n-th state available */ |
01854e69 | 220 | |
1da177e4 LT |
221 | struct acpi_processor_flags flags; |
222 | struct acpi_processor_power power; | |
223 | struct acpi_processor_performance *performance; | |
224 | struct acpi_processor_throttling throttling; | |
225 | struct acpi_processor_limit limit; | |
d9460fd2 | 226 | struct thermal_cooling_device *cdev; |
1da177e4 LT |
227 | }; |
228 | ||
229 | struct acpi_processor_errata { | |
4be44fcd | 230 | u8 smp; |
1da177e4 | 231 | struct { |
4be44fcd LB |
232 | u8 throttle:1; |
233 | u8 fdma:1; | |
234 | u8 reserved:6; | |
235 | u32 bmisx; | |
236 | } piix4; | |
1da177e4 LT |
237 | }; |
238 | ||
fd350943 LB |
239 | extern int acpi_processor_preregister_performance(struct |
240 | acpi_processor_performance | |
a29d8b8e | 241 | __percpu *performance); |
3b2d9942 | 242 | |
4be44fcd LB |
243 | extern int acpi_processor_register_performance(struct acpi_processor_performance |
244 | *performance, unsigned int cpu); | |
245 | extern void acpi_processor_unregister_performance(struct | |
246 | acpi_processor_performance | |
247 | *performance, | |
248 | unsigned int cpu); | |
1da177e4 LT |
249 | |
250 | /* note: this locks both the calling module and the processor module | |
251 | if a _PPC object exists, rmmod is disallowed then */ | |
252 | int acpi_processor_notify_smm(struct module *calling_module); | |
253 | ||
1da177e4 | 254 | /* for communication between multiple parts of the processor kernel module */ |
706546d0 | 255 | DECLARE_PER_CPU(struct acpi_processor *, processors); |
1da177e4 LT |
256 | extern struct acpi_processor_errata errata; |
257 | ||
05131ecc | 258 | #ifdef ARCH_HAS_POWER_INIT |
02df8b93 | 259 | void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags, |
4be44fcd | 260 | unsigned int cpu); |
991528d7 | 261 | int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
262 | struct acpi_processor_cx *cx, |
263 | struct acpi_power_register *reg); | |
991528d7 | 264 | void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate); |
02df8b93 | 265 | #else |
4be44fcd LB |
266 | static inline void acpi_processor_power_init_bm_check(struct |
267 | acpi_processor_flags | |
268 | *flags, unsigned int cpu) | |
02df8b93 VP |
269 | { |
270 | flags->bm_check = 1; | |
271 | return; | |
272 | } | |
991528d7 | 273 | static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
274 | struct acpi_processor_cx *cx, |
275 | struct acpi_power_register | |
276 | *reg) | |
991528d7 VP |
277 | { |
278 | return -1; | |
279 | } | |
fd350943 LB |
280 | static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx |
281 | *cstate) | |
991528d7 VP |
282 | { |
283 | return; | |
284 | } | |
02df8b93 VP |
285 | #endif |
286 | ||
1da177e4 | 287 | /* in processor_perflib.c */ |
02df8b93 | 288 | |
1da177e4 LT |
289 | #ifdef CONFIG_CPU_FREQ |
290 | void acpi_processor_ppc_init(void); | |
291 | void acpi_processor_ppc_exit(void); | |
d81c45e1 | 292 | int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag); |
e2f74f35 | 293 | extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit); |
1da177e4 | 294 | #else |
4be44fcd LB |
295 | static inline void acpi_processor_ppc_init(void) |
296 | { | |
297 | return; | |
298 | } | |
299 | static inline void acpi_processor_ppc_exit(void) | |
300 | { | |
301 | return; | |
302 | } | |
d81c45e1 ZY |
303 | static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr, |
304 | int event_flag) | |
4be44fcd | 305 | { |
1da177e4 LT |
306 | static unsigned int printout = 1; |
307 | if (printout) { | |
4be44fcd LB |
308 | printk(KERN_WARNING |
309 | "Warning: Processor Platform Limit event detected, but not handled.\n"); | |
310 | printk(KERN_WARNING | |
311 | "Consider compiling CPUfreq support into your kernel.\n"); | |
1da177e4 LT |
312 | printout = 0; |
313 | } | |
314 | return 0; | |
315 | } | |
e2f74f35 TR |
316 | static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit) |
317 | { | |
318 | return -ENODEV; | |
319 | } | |
320 | ||
4be44fcd | 321 | #endif /* CONFIG_CPU_FREQ */ |
1da177e4 | 322 | |
4d5d4cd8 | 323 | /* in processor_core.c */ |
43bab25c | 324 | void acpi_processor_set_pdc(acpi_handle handle); |
2e9d5e4e AC |
325 | #ifdef CONFIG_SMP |
326 | int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); | |
327 | #else | |
328 | static inline int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id) | |
329 | { | |
330 | return -1; | |
331 | } | |
332 | #endif | |
78f16996 | 333 | |
1da177e4 | 334 | /* in processor_throttling.c */ |
a66b34b2 | 335 | int acpi_processor_tstate_has_changed(struct acpi_processor *pr); |
4be44fcd | 336 | int acpi_processor_get_throttling_info(struct acpi_processor *pr); |
2a908002 FP |
337 | extern int acpi_processor_set_throttling(struct acpi_processor *pr, |
338 | int state, bool force); | |
070d8eb1 | 339 | extern const struct file_operations acpi_processor_throttling_fops; |
1180509f | 340 | extern void acpi_processor_throttling_init(void); |
1da177e4 | 341 | /* in processor_idle.c */ |
4be44fcd LB |
342 | int acpi_processor_power_init(struct acpi_processor *pr, |
343 | struct acpi_device *device); | |
344 | int acpi_processor_cst_has_changed(struct acpi_processor *pr); | |
345 | int acpi_processor_power_exit(struct acpi_processor *pr, | |
346 | struct acpi_device *device); | |
b04e7bdb TG |
347 | int acpi_processor_suspend(struct acpi_device * device, pm_message_t state); |
348 | int acpi_processor_resume(struct acpi_device * device); | |
4f86d3a8 | 349 | extern struct cpuidle_driver acpi_idle_driver; |
1da177e4 LT |
350 | |
351 | /* in processor_thermal.c */ | |
4be44fcd | 352 | int acpi_processor_get_limit_info(struct acpi_processor *pr); |
070d8eb1 | 353 | extern const struct file_operations acpi_processor_limit_fops; |
d9460fd2 | 354 | extern struct thermal_cooling_device_ops processor_cooling_ops; |
1da177e4 LT |
355 | #ifdef CONFIG_CPU_FREQ |
356 | void acpi_thermal_cpufreq_init(void); | |
357 | void acpi_thermal_cpufreq_exit(void); | |
358 | #else | |
4be44fcd LB |
359 | static inline void acpi_thermal_cpufreq_init(void) |
360 | { | |
361 | return; | |
362 | } | |
363 | static inline void acpi_thermal_cpufreq_exit(void) | |
364 | { | |
365 | return; | |
366 | } | |
1da177e4 LT |
367 | #endif |
368 | ||
1da177e4 | 369 | #endif |