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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; | |
718be4aa | 51 | u8 access_size; |
4be44fcd | 52 | u64 address; |
1da177e4 LT |
53 | } __attribute__ ((packed)); |
54 | ||
1da177e4 | 55 | struct acpi_processor_cx { |
4be44fcd LB |
56 | u8 valid; |
57 | u8 type; | |
58 | u32 address; | |
bc71bec9 | 59 | u8 entry_method; |
991528d7 | 60 | u8 index; |
4be44fcd LB |
61 | u32 latency; |
62 | u32 latency_ticks; | |
63 | u32 power; | |
64 | u32 usage; | |
a3c6598f | 65 | u64 time; |
718be4aa | 66 | u8 bm_sts_skip; |
4fcb2fcd | 67 | char desc[ACPI_CX_DESC_LEN]; |
1da177e4 LT |
68 | }; |
69 | ||
70 | struct acpi_processor_power { | |
4f86d3a8 | 71 | struct cpuidle_device dev; |
1da177e4 | 72 | struct acpi_processor_cx *state; |
4be44fcd LB |
73 | unsigned long bm_check_timestamp; |
74 | u32 default_state; | |
4be44fcd | 75 | int count; |
1da177e4 | 76 | struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER]; |
169a0abb | 77 | int timer_broadcast_on_state; |
1da177e4 LT |
78 | }; |
79 | ||
80 | /* Performance Management */ | |
81 | ||
3b2d9942 | 82 | struct acpi_psd_package { |
439913ff LM |
83 | u64 num_entries; |
84 | u64 revision; | |
85 | u64 domain; | |
86 | u64 coord_type; | |
87 | u64 num_processors; | |
3b2d9942 VP |
88 | } __attribute__ ((packed)); |
89 | ||
1da177e4 | 90 | struct acpi_pct_register { |
4be44fcd LB |
91 | u8 descriptor; |
92 | u16 length; | |
93 | u8 space_id; | |
94 | u8 bit_width; | |
95 | u8 bit_offset; | |
96 | u8 reserved; | |
97 | u64 address; | |
1da177e4 LT |
98 | } __attribute__ ((packed)); |
99 | ||
100 | struct acpi_processor_px { | |
439913ff LM |
101 | u64 core_frequency; /* megahertz */ |
102 | u64 power; /* milliWatts */ | |
103 | u64 transition_latency; /* microseconds */ | |
104 | u64 bus_master_latency; /* microseconds */ | |
105 | u64 control; /* control value */ | |
106 | u64 status; /* success indicator */ | |
1da177e4 LT |
107 | }; |
108 | ||
1da177e4 | 109 | struct acpi_processor_performance { |
4be44fcd LB |
110 | unsigned int state; |
111 | unsigned int platform_limit; | |
1da177e4 LT |
112 | struct acpi_pct_register control_register; |
113 | struct acpi_pct_register status_register; | |
4be44fcd | 114 | unsigned int state_count; |
1da177e4 | 115 | struct acpi_processor_px *states; |
3b2d9942 | 116 | struct acpi_psd_package domain_info; |
2fdf66b4 | 117 | cpumask_var_t shared_cpu_map; |
3b2d9942 | 118 | unsigned int shared_type; |
1da177e4 LT |
119 | }; |
120 | ||
1da177e4 LT |
121 | /* Throttling Control */ |
122 | ||
01854e69 | 123 | struct acpi_tsd_package { |
439913ff LM |
124 | u64 num_entries; |
125 | u64 revision; | |
126 | u64 domain; | |
127 | u64 coord_type; | |
128 | u64 num_processors; | |
01854e69 LY |
129 | } __attribute__ ((packed)); |
130 | ||
131 | struct acpi_ptc_register { | |
132 | u8 descriptor; | |
133 | u16 length; | |
134 | u8 space_id; | |
135 | u8 bit_width; | |
136 | u8 bit_offset; | |
137 | u8 reserved; | |
138 | u64 address; | |
139 | } __attribute__ ((packed)); | |
140 | ||
141 | struct acpi_processor_tx_tss { | |
439913ff LM |
142 | u64 freqpercentage; /* */ |
143 | u64 power; /* milliWatts */ | |
144 | u64 transition_latency; /* microseconds */ | |
145 | u64 control; /* control value */ | |
146 | u64 status; /* success indicator */ | |
01854e69 | 147 | }; |
1da177e4 | 148 | struct acpi_processor_tx { |
4be44fcd LB |
149 | u16 power; |
150 | u16 performance; | |
1da177e4 LT |
151 | }; |
152 | ||
01854e69 | 153 | struct acpi_processor; |
1da177e4 | 154 | struct acpi_processor_throttling { |
01854e69 LY |
155 | unsigned int state; |
156 | unsigned int platform_limit; | |
157 | struct acpi_pct_register control_register; | |
158 | struct acpi_pct_register status_register; | |
159 | unsigned int state_count; | |
160 | struct acpi_processor_tx_tss *states_tss; | |
161 | struct acpi_tsd_package domain_info; | |
2fdf66b4 | 162 | cpumask_var_t shared_cpu_map; |
ff55a9ce LB |
163 | int (*acpi_processor_get_throttling) (struct acpi_processor * pr); |
164 | int (*acpi_processor_set_throttling) (struct acpi_processor * pr, | |
2a908002 | 165 | int state, bool force); |
01854e69 | 166 | |
4be44fcd LB |
167 | u32 address; |
168 | u8 duty_offset; | |
169 | u8 duty_width; | |
1180509f ZY |
170 | u8 tsd_valid_flag; |
171 | unsigned int shared_type; | |
1da177e4 LT |
172 | struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING]; |
173 | }; | |
174 | ||
175 | /* Limit Interface */ | |
176 | ||
177 | struct acpi_processor_lx { | |
aee07ba6 | 178 | int px; /* performance state */ |
4be44fcd | 179 | int tx; /* throttle level */ |
1da177e4 LT |
180 | }; |
181 | ||
182 | struct acpi_processor_limit { | |
4be44fcd | 183 | struct acpi_processor_lx state; /* current limit */ |
1da177e4 | 184 | struct acpi_processor_lx thermal; /* thermal limit */ |
4be44fcd | 185 | struct acpi_processor_lx user; /* user limit */ |
1da177e4 LT |
186 | }; |
187 | ||
1da177e4 | 188 | struct acpi_processor_flags { |
4be44fcd LB |
189 | u8 power:1; |
190 | u8 performance:1; | |
191 | u8 throttling:1; | |
192 | u8 limit:1; | |
193 | u8 bm_control:1; | |
194 | u8 bm_check:1; | |
195 | u8 has_cst:1; | |
196 | u8 power_setup_done:1; | |
4f86d3a8 | 197 | u8 bm_rld_set:1; |
1da177e4 LT |
198 | }; |
199 | ||
200 | struct acpi_processor { | |
4be44fcd LB |
201 | acpi_handle handle; |
202 | u32 acpi_id; | |
203 | u32 id; | |
204 | u32 pblk; | |
205 | int performance_platform_limit; | |
01854e69 | 206 | int throttling_platform_limit; |
ff55a9ce | 207 | /* 0 - states 0..n-th state available */ |
01854e69 | 208 | |
1da177e4 LT |
209 | 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; | |
d9460fd2 | 214 | struct thermal_cooling_device *cdev; |
1da177e4 LT |
215 | }; |
216 | ||
217 | struct acpi_processor_errata { | |
4be44fcd | 218 | u8 smp; |
1da177e4 | 219 | struct { |
4be44fcd LB |
220 | u8 throttle:1; |
221 | u8 fdma:1; | |
222 | u8 reserved:6; | |
223 | u32 bmisx; | |
224 | } piix4; | |
1da177e4 LT |
225 | }; |
226 | ||
fd350943 LB |
227 | extern int acpi_processor_preregister_performance(struct |
228 | acpi_processor_performance | |
a29d8b8e | 229 | __percpu *performance); |
3b2d9942 | 230 | |
4be44fcd LB |
231 | extern int acpi_processor_register_performance(struct acpi_processor_performance |
232 | *performance, unsigned int cpu); | |
233 | extern void acpi_processor_unregister_performance(struct | |
234 | acpi_processor_performance | |
235 | *performance, | |
236 | unsigned int cpu); | |
1da177e4 LT |
237 | |
238 | /* note: this locks both the calling module and the processor module | |
239 | if a _PPC object exists, rmmod is disallowed then */ | |
240 | int acpi_processor_notify_smm(struct module *calling_module); | |
241 | ||
1da177e4 | 242 | /* for communication between multiple parts of the processor kernel module */ |
706546d0 | 243 | DECLARE_PER_CPU(struct acpi_processor *, processors); |
1da177e4 LT |
244 | extern struct acpi_processor_errata errata; |
245 | ||
05131ecc | 246 | #ifdef ARCH_HAS_POWER_INIT |
02df8b93 | 247 | void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags, |
4be44fcd | 248 | unsigned int cpu); |
991528d7 | 249 | int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
250 | struct acpi_processor_cx *cx, |
251 | struct acpi_power_register *reg); | |
991528d7 | 252 | void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate); |
02df8b93 | 253 | #else |
4be44fcd LB |
254 | static inline void acpi_processor_power_init_bm_check(struct |
255 | acpi_processor_flags | |
256 | *flags, unsigned int cpu) | |
02df8b93 VP |
257 | { |
258 | flags->bm_check = 1; | |
259 | return; | |
260 | } | |
991528d7 | 261 | static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
262 | struct acpi_processor_cx *cx, |
263 | struct acpi_power_register | |
264 | *reg) | |
991528d7 VP |
265 | { |
266 | return -1; | |
267 | } | |
fd350943 LB |
268 | static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx |
269 | *cstate) | |
991528d7 VP |
270 | { |
271 | return; | |
272 | } | |
02df8b93 VP |
273 | #endif |
274 | ||
1da177e4 | 275 | /* in processor_perflib.c */ |
02df8b93 | 276 | |
1da177e4 LT |
277 | #ifdef CONFIG_CPU_FREQ |
278 | void acpi_processor_ppc_init(void); | |
279 | void acpi_processor_ppc_exit(void); | |
d81c45e1 | 280 | int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag); |
e2f74f35 | 281 | extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit); |
1da177e4 | 282 | #else |
4be44fcd LB |
283 | static inline void acpi_processor_ppc_init(void) |
284 | { | |
285 | return; | |
286 | } | |
287 | static inline void acpi_processor_ppc_exit(void) | |
288 | { | |
289 | return; | |
290 | } | |
d81c45e1 ZY |
291 | static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr, |
292 | int event_flag) | |
4be44fcd | 293 | { |
1da177e4 LT |
294 | static unsigned int printout = 1; |
295 | if (printout) { | |
4be44fcd LB |
296 | printk(KERN_WARNING |
297 | "Warning: Processor Platform Limit event detected, but not handled.\n"); | |
298 | printk(KERN_WARNING | |
299 | "Consider compiling CPUfreq support into your kernel.\n"); | |
1da177e4 LT |
300 | printout = 0; |
301 | } | |
302 | return 0; | |
303 | } | |
e2f74f35 TR |
304 | static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit) |
305 | { | |
306 | return -ENODEV; | |
307 | } | |
308 | ||
4be44fcd | 309 | #endif /* CONFIG_CPU_FREQ */ |
1da177e4 | 310 | |
4d5d4cd8 | 311 | /* in processor_core.c */ |
43bab25c | 312 | void acpi_processor_set_pdc(acpi_handle handle); |
2e9d5e4e AC |
313 | #ifdef CONFIG_SMP |
314 | int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); | |
315 | #else | |
316 | static inline int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id) | |
317 | { | |
318 | return -1; | |
319 | } | |
320 | #endif | |
78f16996 | 321 | |
1da177e4 | 322 | /* in processor_throttling.c */ |
a66b34b2 | 323 | int acpi_processor_tstate_has_changed(struct acpi_processor *pr); |
4be44fcd | 324 | int acpi_processor_get_throttling_info(struct acpi_processor *pr); |
2a908002 FP |
325 | extern int acpi_processor_set_throttling(struct acpi_processor *pr, |
326 | int state, bool force); | |
5a344a50 ZY |
327 | /* |
328 | * Reevaluate whether the T-state is invalid after one cpu is | |
329 | * onlined/offlined. In such case the flags.throttling will be updated. | |
330 | */ | |
331 | extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, | |
332 | unsigned long action); | |
070d8eb1 | 333 | extern const struct file_operations acpi_processor_throttling_fops; |
1180509f | 334 | extern void acpi_processor_throttling_init(void); |
1da177e4 | 335 | /* in processor_idle.c */ |
4be44fcd LB |
336 | int acpi_processor_power_init(struct acpi_processor *pr, |
337 | struct acpi_device *device); | |
338 | int acpi_processor_cst_has_changed(struct acpi_processor *pr); | |
339 | int acpi_processor_power_exit(struct acpi_processor *pr, | |
340 | struct acpi_device *device); | |
b04e7bdb TG |
341 | int acpi_processor_suspend(struct acpi_device * device, pm_message_t state); |
342 | int acpi_processor_resume(struct acpi_device * device); | |
4f86d3a8 | 343 | extern struct cpuidle_driver acpi_idle_driver; |
1da177e4 LT |
344 | |
345 | /* in processor_thermal.c */ | |
4be44fcd | 346 | int acpi_processor_get_limit_info(struct acpi_processor *pr); |
d9460fd2 | 347 | extern struct thermal_cooling_device_ops processor_cooling_ops; |
1da177e4 LT |
348 | #ifdef CONFIG_CPU_FREQ |
349 | void acpi_thermal_cpufreq_init(void); | |
350 | void acpi_thermal_cpufreq_exit(void); | |
351 | #else | |
4be44fcd LB |
352 | static inline void acpi_thermal_cpufreq_init(void) |
353 | { | |
354 | return; | |
355 | } | |
356 | static inline void acpi_thermal_cpufreq_exit(void) | |
357 | { | |
358 | return; | |
359 | } | |
1da177e4 LT |
360 | #endif |
361 | ||
1da177e4 | 362 | #endif |