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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 | |
42 | ||
43 | #define ACPI_CX_DESC_LEN 32 | |
991528d7 | 44 | |
1da177e4 LT |
45 | /* Power Management */ |
46 | ||
47 | struct acpi_processor_cx; | |
48 | ||
49 | struct acpi_power_register { | |
4be44fcd LB |
50 | u8 descriptor; |
51 | u16 length; | |
52 | u8 space_id; | |
53 | u8 bit_width; | |
54 | u8 bit_offset; | |
718be4aa | 55 | u8 access_size; |
4be44fcd | 56 | u64 address; |
92c4d2ad | 57 | } __packed; |
1da177e4 | 58 | |
1da177e4 | 59 | struct acpi_processor_cx { |
4be44fcd LB |
60 | u8 valid; |
61 | u8 type; | |
62 | u32 address; | |
bc71bec9 | 63 | u8 entry_method; |
991528d7 | 64 | u8 index; |
4be44fcd | 65 | u32 latency; |
718be4aa | 66 | u8 bm_sts_skip; |
4fcb2fcd | 67 | char desc[ACPI_CX_DESC_LEN]; |
1da177e4 LT |
68 | }; |
69 | ||
70 | struct acpi_processor_power { | |
4be44fcd | 71 | int count; |
1da177e4 | 72 | struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER]; |
169a0abb | 73 | int timer_broadcast_on_state; |
1da177e4 LT |
74 | }; |
75 | ||
76 | /* Performance Management */ | |
77 | ||
3b2d9942 | 78 | struct acpi_psd_package { |
439913ff LM |
79 | u64 num_entries; |
80 | u64 revision; | |
81 | u64 domain; | |
82 | u64 coord_type; | |
83 | u64 num_processors; | |
92c4d2ad | 84 | } __packed; |
3b2d9942 | 85 | |
1da177e4 | 86 | struct acpi_pct_register { |
4be44fcd LB |
87 | u8 descriptor; |
88 | u16 length; | |
89 | u8 space_id; | |
90 | u8 bit_width; | |
91 | u8 bit_offset; | |
92 | u8 reserved; | |
93 | u64 address; | |
92c4d2ad | 94 | } __packed; |
1da177e4 LT |
95 | |
96 | struct acpi_processor_px { | |
439913ff LM |
97 | u64 core_frequency; /* megahertz */ |
98 | u64 power; /* milliWatts */ | |
99 | u64 transition_latency; /* microseconds */ | |
100 | u64 bus_master_latency; /* microseconds */ | |
101 | u64 control; /* control value */ | |
102 | u64 status; /* success indicator */ | |
1da177e4 LT |
103 | }; |
104 | ||
1da177e4 | 105 | struct acpi_processor_performance { |
4be44fcd LB |
106 | unsigned int state; |
107 | unsigned int platform_limit; | |
1da177e4 LT |
108 | struct acpi_pct_register control_register; |
109 | struct acpi_pct_register status_register; | |
4be44fcd | 110 | unsigned int state_count; |
1da177e4 | 111 | struct acpi_processor_px *states; |
3b2d9942 | 112 | struct acpi_psd_package domain_info; |
2fdf66b4 | 113 | cpumask_var_t shared_cpu_map; |
3b2d9942 | 114 | unsigned int shared_type; |
1da177e4 LT |
115 | }; |
116 | ||
1da177e4 LT |
117 | /* Throttling Control */ |
118 | ||
01854e69 | 119 | struct acpi_tsd_package { |
439913ff LM |
120 | u64 num_entries; |
121 | u64 revision; | |
122 | u64 domain; | |
123 | u64 coord_type; | |
124 | u64 num_processors; | |
92c4d2ad | 125 | } __packed; |
01854e69 LY |
126 | |
127 | struct acpi_ptc_register { | |
128 | u8 descriptor; | |
129 | u16 length; | |
130 | u8 space_id; | |
131 | u8 bit_width; | |
132 | u8 bit_offset; | |
133 | u8 reserved; | |
134 | u64 address; | |
92c4d2ad | 135 | } __packed; |
01854e69 LY |
136 | |
137 | struct acpi_processor_tx_tss { | |
439913ff LM |
138 | u64 freqpercentage; /* */ |
139 | u64 power; /* milliWatts */ | |
140 | u64 transition_latency; /* microseconds */ | |
141 | u64 control; /* control value */ | |
142 | u64 status; /* success indicator */ | |
01854e69 | 143 | }; |
1da177e4 | 144 | struct acpi_processor_tx { |
4be44fcd LB |
145 | u16 power; |
146 | u16 performance; | |
1da177e4 LT |
147 | }; |
148 | ||
01854e69 | 149 | struct acpi_processor; |
1da177e4 | 150 | struct acpi_processor_throttling { |
01854e69 LY |
151 | unsigned int state; |
152 | unsigned int platform_limit; | |
153 | struct acpi_pct_register control_register; | |
154 | struct acpi_pct_register status_register; | |
155 | unsigned int state_count; | |
156 | struct acpi_processor_tx_tss *states_tss; | |
157 | struct acpi_tsd_package domain_info; | |
2fdf66b4 | 158 | cpumask_var_t shared_cpu_map; |
ff55a9ce LB |
159 | int (*acpi_processor_get_throttling) (struct acpi_processor * pr); |
160 | int (*acpi_processor_set_throttling) (struct acpi_processor * pr, | |
2a908002 | 161 | int state, bool force); |
01854e69 | 162 | |
4be44fcd LB |
163 | u32 address; |
164 | u8 duty_offset; | |
165 | u8 duty_width; | |
1180509f ZY |
166 | u8 tsd_valid_flag; |
167 | unsigned int shared_type; | |
1da177e4 LT |
168 | struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING]; |
169 | }; | |
170 | ||
171 | /* Limit Interface */ | |
172 | ||
173 | struct acpi_processor_lx { | |
aee07ba6 | 174 | int px; /* performance state */ |
4be44fcd | 175 | int tx; /* throttle level */ |
1da177e4 LT |
176 | }; |
177 | ||
178 | struct acpi_processor_limit { | |
4be44fcd | 179 | struct acpi_processor_lx state; /* current limit */ |
1da177e4 | 180 | struct acpi_processor_lx thermal; /* thermal limit */ |
4be44fcd | 181 | struct acpi_processor_lx user; /* user limit */ |
1da177e4 LT |
182 | }; |
183 | ||
1da177e4 | 184 | struct acpi_processor_flags { |
4be44fcd LB |
185 | u8 power:1; |
186 | u8 performance:1; | |
187 | u8 throttling:1; | |
188 | u8 limit:1; | |
189 | u8 bm_control:1; | |
190 | u8 bm_check:1; | |
191 | u8 has_cst:1; | |
192 | u8 power_setup_done:1; | |
4f86d3a8 | 193 | u8 bm_rld_set:1; |
99b72508 | 194 | u8 need_hotplug_init:1; |
1da177e4 LT |
195 | }; |
196 | ||
197 | struct acpi_processor { | |
4be44fcd LB |
198 | acpi_handle handle; |
199 | u32 acpi_id; | |
828aef37 | 200 | phys_cpuid_t phys_id; /* CPU hardware ID such as APIC ID for x86 */ |
af8f3f51 | 201 | u32 id; /* CPU logical ID allocated by OS */ |
4be44fcd LB |
202 | u32 pblk; |
203 | int performance_platform_limit; | |
01854e69 | 204 | int throttling_platform_limit; |
ff55a9ce | 205 | /* 0 - states 0..n-th state available */ |
01854e69 | 206 | |
1da177e4 LT |
207 | struct acpi_processor_flags flags; |
208 | struct acpi_processor_power power; | |
209 | struct acpi_processor_performance *performance; | |
210 | struct acpi_processor_throttling throttling; | |
211 | struct acpi_processor_limit limit; | |
d9460fd2 | 212 | struct thermal_cooling_device *cdev; |
ac212b69 | 213 | struct device *dev; /* Processor device. */ |
1da177e4 LT |
214 | }; |
215 | ||
216 | struct acpi_processor_errata { | |
4be44fcd | 217 | u8 smp; |
1da177e4 | 218 | struct { |
4be44fcd LB |
219 | u8 throttle:1; |
220 | u8 fdma:1; | |
221 | u8 reserved:6; | |
222 | u32 bmisx; | |
223 | } piix4; | |
1da177e4 LT |
224 | }; |
225 | ||
fd350943 LB |
226 | extern int acpi_processor_preregister_performance(struct |
227 | acpi_processor_performance | |
a29d8b8e | 228 | __percpu *performance); |
3b2d9942 | 229 | |
4be44fcd LB |
230 | extern int acpi_processor_register_performance(struct acpi_processor_performance |
231 | *performance, unsigned int cpu); | |
b2f8dc4c | 232 | extern void acpi_processor_unregister_performance(unsigned int cpu); |
1da177e4 LT |
233 | |
234 | /* note: this locks both the calling module and the processor module | |
235 | if a _PPC object exists, rmmod is disallowed then */ | |
236 | int acpi_processor_notify_smm(struct module *calling_module); | |
237 | ||
c705c78c KRW |
238 | /* parsing the _P* objects. */ |
239 | extern int acpi_processor_get_performance_info(struct acpi_processor *pr); | |
240 | ||
1da177e4 | 241 | /* for communication between multiple parts of the processor kernel module */ |
706546d0 | 242 | DECLARE_PER_CPU(struct acpi_processor *, processors); |
1da177e4 LT |
243 | extern struct acpi_processor_errata errata; |
244 | ||
05131ecc | 245 | #ifdef ARCH_HAS_POWER_INIT |
02df8b93 | 246 | void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags, |
4be44fcd | 247 | unsigned int cpu); |
991528d7 | 248 | int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
249 | struct acpi_processor_cx *cx, |
250 | struct acpi_power_register *reg); | |
991528d7 | 251 | void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate); |
02df8b93 | 252 | #else |
4be44fcd LB |
253 | static inline void acpi_processor_power_init_bm_check(struct |
254 | acpi_processor_flags | |
255 | *flags, unsigned int cpu) | |
02df8b93 VP |
256 | { |
257 | flags->bm_check = 1; | |
258 | return; | |
259 | } | |
991528d7 | 260 | static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
261 | struct acpi_processor_cx *cx, |
262 | struct acpi_power_register | |
263 | *reg) | |
991528d7 VP |
264 | { |
265 | return -1; | |
266 | } | |
fd350943 LB |
267 | static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx |
268 | *cstate) | |
991528d7 VP |
269 | { |
270 | return; | |
271 | } | |
02df8b93 VP |
272 | #endif |
273 | ||
1da177e4 | 274 | /* in processor_perflib.c */ |
02df8b93 | 275 | |
1da177e4 LT |
276 | #ifdef CONFIG_CPU_FREQ |
277 | void acpi_processor_ppc_init(void); | |
278 | void acpi_processor_ppc_exit(void); | |
d81c45e1 | 279 | int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag); |
e2f74f35 | 280 | extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit); |
1da177e4 | 281 | #else |
4be44fcd LB |
282 | static inline void acpi_processor_ppc_init(void) |
283 | { | |
284 | return; | |
285 | } | |
286 | static inline void acpi_processor_ppc_exit(void) | |
287 | { | |
288 | return; | |
289 | } | |
d81c45e1 ZY |
290 | static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr, |
291 | int event_flag) | |
4be44fcd | 292 | { |
1da177e4 LT |
293 | static unsigned int printout = 1; |
294 | if (printout) { | |
4be44fcd LB |
295 | printk(KERN_WARNING |
296 | "Warning: Processor Platform Limit event detected, but not handled.\n"); | |
297 | printk(KERN_WARNING | |
298 | "Consider compiling CPUfreq support into your kernel.\n"); | |
1da177e4 LT |
299 | printout = 0; |
300 | } | |
301 | return 0; | |
302 | } | |
e2f74f35 TR |
303 | static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit) |
304 | { | |
305 | return -ENODEV; | |
306 | } | |
307 | ||
4be44fcd | 308 | #endif /* CONFIG_CPU_FREQ */ |
1da177e4 | 309 | |
4d5d4cd8 | 310 | /* in processor_core.c */ |
828aef37 CM |
311 | phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id); |
312 | int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id); | |
2e9d5e4e | 313 | int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); |
78f16996 | 314 | |
4f2f7573 AC |
315 | #ifdef CONFIG_ACPI_CPPC_LIB |
316 | extern int acpi_cppc_processor_probe(struct acpi_processor *pr); | |
317 | extern void acpi_cppc_processor_exit(struct acpi_processor *pr); | |
318 | #else | |
319 | static inline int acpi_cppc_processor_probe(struct acpi_processor *pr) | |
320 | { | |
321 | return 0; | |
322 | } | |
323 | static inline void acpi_cppc_processor_exit(struct acpi_processor *pr) | |
324 | { | |
325 | return; | |
326 | } | |
327 | #endif /* CONFIG_ACPI_CPPC_LIB */ | |
328 | ||
24119a88 HG |
329 | /* in processor_pdc.c */ |
330 | void acpi_processor_set_pdc(acpi_handle handle); | |
331 | ||
1da177e4 | 332 | /* in processor_throttling.c */ |
239708a3 | 333 | #ifdef CONFIG_ACPI_CPU_FREQ_PSS |
a66b34b2 | 334 | int acpi_processor_tstate_has_changed(struct acpi_processor *pr); |
4be44fcd | 335 | int acpi_processor_get_throttling_info(struct acpi_processor *pr); |
2a908002 FP |
336 | extern int acpi_processor_set_throttling(struct acpi_processor *pr, |
337 | int state, bool force); | |
5a344a50 ZY |
338 | /* |
339 | * Reevaluate whether the T-state is invalid after one cpu is | |
340 | * onlined/offlined. In such case the flags.throttling will be updated. | |
341 | */ | |
342 | extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, | |
343 | unsigned long action); | |
070d8eb1 | 344 | extern const struct file_operations acpi_processor_throttling_fops; |
1180509f | 345 | extern void acpi_processor_throttling_init(void); |
239708a3 AC |
346 | #else |
347 | static inline int acpi_processor_tstate_has_changed(struct acpi_processor *pr) | |
348 | { | |
349 | return 0; | |
350 | } | |
351 | ||
352 | static inline int acpi_processor_get_throttling_info(struct acpi_processor *pr) | |
353 | { | |
354 | return -ENODEV; | |
355 | } | |
356 | ||
357 | static inline int acpi_processor_set_throttling(struct acpi_processor *pr, | |
358 | int state, bool force) | |
359 | { | |
360 | return -ENODEV; | |
361 | } | |
362 | ||
363 | static inline void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, | |
364 | unsigned long action) {} | |
365 | ||
366 | static inline void acpi_processor_throttling_init(void) {} | |
367 | #endif /* CONFIG_ACPI_CPU_FREQ_PSS */ | |
368 | ||
1da177e4 | 369 | /* in processor_idle.c */ |
5f05586c AC |
370 | extern struct cpuidle_driver acpi_idle_driver; |
371 | #ifdef CONFIG_ACPI_PROCESSOR_IDLE | |
38a991b6 DL |
372 | int acpi_processor_power_init(struct acpi_processor *pr); |
373 | int acpi_processor_power_exit(struct acpi_processor *pr); | |
4be44fcd | 374 | int acpi_processor_cst_has_changed(struct acpi_processor *pr); |
46bcfad7 | 375 | int acpi_processor_hotplug(struct acpi_processor *pr); |
5f05586c AC |
376 | #else |
377 | static inline int acpi_processor_power_init(struct acpi_processor *pr) | |
378 | { | |
379 | return -ENODEV; | |
380 | } | |
381 | ||
382 | static inline int acpi_processor_power_exit(struct acpi_processor *pr) | |
383 | { | |
384 | return -ENODEV; | |
385 | } | |
386 | ||
387 | static inline int acpi_processor_cst_has_changed(struct acpi_processor *pr) | |
388 | { | |
389 | return -ENODEV; | |
390 | } | |
391 | ||
392 | static inline int acpi_processor_hotplug(struct acpi_processor *pr) | |
393 | { | |
394 | return -ENODEV; | |
395 | } | |
396 | #endif /* CONFIG_ACPI_PROCESSOR_IDLE */ | |
1da177e4 LT |
397 | |
398 | /* in processor_thermal.c */ | |
4be44fcd | 399 | int acpi_processor_get_limit_info(struct acpi_processor *pr); |
9c8b04be | 400 | extern const struct thermal_cooling_device_ops processor_cooling_ops; |
239708a3 | 401 | #if defined(CONFIG_ACPI_CPU_FREQ_PSS) & defined(CONFIG_CPU_FREQ) |
1da177e4 LT |
402 | void acpi_thermal_cpufreq_init(void); |
403 | void acpi_thermal_cpufreq_exit(void); | |
404 | #else | |
4be44fcd LB |
405 | static inline void acpi_thermal_cpufreq_init(void) |
406 | { | |
407 | return; | |
408 | } | |
409 | static inline void acpi_thermal_cpufreq_exit(void) | |
410 | { | |
411 | return; | |
412 | } | |
239708a3 | 413 | #endif /* CONFIG_ACPI_CPU_FREQ_PSS */ |
1da177e4 | 414 | |
1da177e4 | 415 | #endif |