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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> |
d9460fd2 | 6 | #include <linux/thermal.h> |
02df8b93 VP |
7 | #include <asm/acpi.h> |
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 |
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 |
28 | ||
01854e69 LY |
29 | #define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */ |
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 | |
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 | }; |
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 | |
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 | }; |
121 | ||
1da177e4 | 122 | struct acpi_processor_performance { |
4be44fcd LB |
123 | unsigned int state; |
124 | unsigned int platform_limit; | |
1da177e4 LT |
125 | struct acpi_pct_register control_register; |
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 | }; |
133 | ||
1da177e4 LT |
134 | /* Throttling Control */ |
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 | |
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; |
163 | u16 performance; | |
1da177e4 LT |
164 | }; |
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); |
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; |
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 | }; |
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; |
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; |
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 | }; |
243 | ||
fd350943 LB |
244 | extern int acpi_processor_preregister_performance(struct |
245 | acpi_processor_performance | |
a29d8b8e | 246 | __percpu *performance); |
3b2d9942 | 247 | |
4be44fcd LB |
248 | extern int acpi_processor_register_performance(struct acpi_processor_performance |
249 | *performance, unsigned int cpu); | |
b2f8dc4c | 250 | extern void acpi_processor_unregister_performance(unsigned int cpu); |
1da177e4 | 251 | |
d0ea59e1 | 252 | int acpi_processor_pstate_control(void); |
1da177e4 LT |
253 | /* note: this locks both the calling module and the processor module |
254 | if a _PPC object exists, rmmod is disallowed then */ | |
255 | int acpi_processor_notify_smm(struct module *calling_module); | |
256 | ||
c705c78c KRW |
257 | /* parsing the _P* objects. */ |
258 | extern int acpi_processor_get_performance_info(struct acpi_processor *pr); | |
259 | ||
1da177e4 | 260 | /* for communication between multiple parts of the processor kernel module */ |
706546d0 | 261 | DECLARE_PER_CPU(struct acpi_processor *, processors); |
1da177e4 LT |
262 | extern struct acpi_processor_errata errata; |
263 | ||
35ae7133 | 264 | #if defined(ARCH_HAS_POWER_INIT) && defined(CONFIG_ACPI_PROCESSOR_CSTATE) |
02df8b93 | 265 | void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags, |
4be44fcd | 266 | unsigned int cpu); |
991528d7 | 267 | int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
268 | struct acpi_processor_cx *cx, |
269 | struct acpi_power_register *reg); | |
991528d7 | 270 | void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate); |
02df8b93 | 271 | #else |
4be44fcd LB |
272 | static inline void acpi_processor_power_init_bm_check(struct |
273 | acpi_processor_flags | |
274 | *flags, unsigned int cpu) | |
02df8b93 VP |
275 | { |
276 | flags->bm_check = 1; | |
277 | return; | |
278 | } | |
991528d7 | 279 | static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
280 | struct acpi_processor_cx *cx, |
281 | struct acpi_power_register | |
282 | *reg) | |
991528d7 VP |
283 | { |
284 | return -1; | |
285 | } | |
fd350943 LB |
286 | static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx |
287 | *cstate) | |
991528d7 VP |
288 | { |
289 | return; | |
290 | } | |
02df8b93 VP |
291 | #endif |
292 | ||
1da177e4 | 293 | /* in processor_perflib.c */ |
02df8b93 | 294 | |
1da177e4 LT |
295 | #ifdef CONFIG_CPU_FREQ |
296 | void acpi_processor_ppc_init(void); | |
297 | void acpi_processor_ppc_exit(void); | |
bca5f557 | 298 | void acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag); |
e2f74f35 | 299 | extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit); |
1da177e4 | 300 | #else |
4be44fcd LB |
301 | static inline void acpi_processor_ppc_init(void) |
302 | { | |
303 | return; | |
304 | } | |
305 | static inline void acpi_processor_ppc_exit(void) | |
306 | { | |
307 | return; | |
308 | } | |
d81c45e1 ZY |
309 | static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr, |
310 | int event_flag) | |
4be44fcd | 311 | { |
1da177e4 LT |
312 | static unsigned int printout = 1; |
313 | if (printout) { | |
4be44fcd LB |
314 | printk(KERN_WARNING |
315 | "Warning: Processor Platform Limit event detected, but not handled.\n"); | |
316 | printk(KERN_WARNING | |
317 | "Consider compiling CPUfreq support into your kernel.\n"); | |
1da177e4 LT |
318 | printout = 0; |
319 | } | |
320 | return 0; | |
321 | } | |
e2f74f35 TR |
322 | static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit) |
323 | { | |
324 | return -ENODEV; | |
325 | } | |
326 | ||
4be44fcd | 327 | #endif /* CONFIG_CPU_FREQ */ |
1da177e4 | 328 | |
4d5d4cd8 | 329 | /* in processor_core.c */ |
828aef37 | 330 | phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id); |
fb7c2bae | 331 | phys_cpuid_t acpi_map_madt_entry(u32 acpi_id); |
828aef37 | 332 | int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id); |
2e9d5e4e | 333 | int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); |
78f16996 | 334 | |
4f2f7573 AC |
335 | #ifdef CONFIG_ACPI_CPPC_LIB |
336 | extern int acpi_cppc_processor_probe(struct acpi_processor *pr); | |
337 | extern void acpi_cppc_processor_exit(struct acpi_processor *pr); | |
338 | #else | |
339 | static inline int acpi_cppc_processor_probe(struct acpi_processor *pr) | |
340 | { | |
341 | return 0; | |
342 | } | |
343 | static inline void acpi_cppc_processor_exit(struct acpi_processor *pr) | |
344 | { | |
345 | return; | |
346 | } | |
347 | #endif /* CONFIG_ACPI_CPPC_LIB */ | |
348 | ||
24119a88 HG |
349 | /* in processor_pdc.c */ |
350 | void acpi_processor_set_pdc(acpi_handle handle); | |
351 | ||
1da177e4 | 352 | /* in processor_throttling.c */ |
239708a3 | 353 | #ifdef CONFIG_ACPI_CPU_FREQ_PSS |
a66b34b2 | 354 | int acpi_processor_tstate_has_changed(struct acpi_processor *pr); |
4be44fcd | 355 | int acpi_processor_get_throttling_info(struct acpi_processor *pr); |
2a908002 FP |
356 | extern int acpi_processor_set_throttling(struct acpi_processor *pr, |
357 | int state, bool force); | |
5a344a50 ZY |
358 | /* |
359 | * Reevaluate whether the T-state is invalid after one cpu is | |
360 | * onlined/offlined. In such case the flags.throttling will be updated. | |
361 | */ | |
362 | extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, | |
64f3bf2f | 363 | bool is_dead); |
070d8eb1 | 364 | extern const struct file_operations acpi_processor_throttling_fops; |
1180509f | 365 | extern void acpi_processor_throttling_init(void); |
239708a3 AC |
366 | #else |
367 | static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr) | |
368 | { | |
369 | return 0; | |
370 | } | |
371 | ||
372 | static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr) | |
373 | { | |
374 | return -ENODEV; | |
375 | } | |
376 | ||
377 | static inline int acpi_processor_set_throttling(struct acpi_processor *pr, | |
378 | int state, bool force) | |
379 | { | |
380 | return -ENODEV; | |
381 | } | |
382 | ||
383 | static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, | |
64f3bf2f | 384 | bool is_dead) {} |
239708a3 AC |
385 | |
386 | static inline void acpi_processor_throttling_init(void) {} | |
387 | #endif /* CONFIG_ACPI_CPU_FREQ_PSS */ | |
388 | ||
1da177e4 | 389 | /* in processor_idle.c */ |
5f05586c AC |
390 | extern struct cpuidle_driver acpi_idle_driver; |
391 | #ifdef CONFIG_ACPI_PROCESSOR_IDLE | |
38a991b6 DL |
392 | int acpi_processor_power_init(struct acpi_processor *pr); |
393 | int acpi_processor_power_exit(struct acpi_processor *pr); | |
a36a7fec | 394 | int acpi_processor_power_state_has_changed(struct acpi_processor *pr); |
46bcfad7 | 395 | int acpi_processor_hotplug(struct acpi_processor *pr); |
5f05586c AC |
396 | #else |
397 | static inline int acpi_processor_power_init(struct acpi_processor *pr) | |
398 | { | |
399 | return -ENODEV; | |
400 | } | |
401 | ||
402 | static inline int acpi_processor_power_exit(struct acpi_processor *pr) | |
403 | { | |
404 | return -ENODEV; | |
405 | } | |
406 | ||
a36a7fec | 407 | static inline int acpi_processor_power_state_has_changed(struct acpi_processor *pr) |
5f05586c AC |
408 | { |
409 | return -ENODEV; | |
410 | } | |
411 | ||
412 | static inline int acpi_processor_hotplug(struct acpi_processor *pr) | |
413 | { | |
414 | return -ENODEV; | |
415 | } | |
416 | #endif /* CONFIG_ACPI_PROCESSOR_IDLE */ | |
1da177e4 LT |
417 | |
418 | /* in processor_thermal.c */ | |
4be44fcd | 419 | int acpi_processor_get_limit_info(struct acpi_processor *pr); |
9c8b04be | 420 | extern const struct thermal_cooling_device_ops processor_cooling_ops; |
239708a3 | 421 | #if defined(CONFIG_ACPI_CPU_FREQ_PSS) & defined(CONFIG_CPU_FREQ) |
1da177e4 LT |
422 | void acpi_thermal_cpufreq_init(void); |
423 | void acpi_thermal_cpufreq_exit(void); | |
424 | #else | |
4be44fcd LB |
425 | static inline void acpi_thermal_cpufreq_init(void) |
426 | { | |
427 | return; | |
428 | } | |
429 | static inline void acpi_thermal_cpufreq_exit(void) | |
430 | { | |
431 | return; | |
432 | } | |
239708a3 | 433 | #endif /* CONFIG_ACPI_CPU_FREQ_PSS */ |
1da177e4 | 434 | |
1da177e4 | 435 | #endif |