Commit | Line | Data |
---|---|---|
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" | |
12 | ||
1da177e4 LT |
13 | #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 | ||
02df8b93 VP |
23 | #define ACPI_PDC_REVISION_ID 0x1 |
24 | ||
fd350943 | 25 | #define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */ |
3b2d9942 VP |
26 | #define ACPI_PSD_REV0_ENTRIES 5 |
27 | ||
01854e69 LY |
28 | #define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */ |
29 | #define ACPI_TSD_REV0_ENTRIES 5 | |
3b2d9942 VP |
30 | /* |
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 | ||
4fcb2fcd VP |
38 | #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 | |
991528d7 | 43 | |
1da177e4 LT |
44 | /* Power Management */ |
45 | ||
46 | struct acpi_processor_cx; | |
47 | ||
48 | struct acpi_power_register { | |
4be44fcd LB |
49 | u8 descriptor; |
50 | u16 length; | |
51 | u8 space_id; | |
52 | u8 bit_width; | |
53 | u8 bit_offset; | |
718be4aa | 54 | u8 access_size; |
4be44fcd | 55 | u64 address; |
1da177e4 LT |
56 | } __attribute__ ((packed)); |
57 | ||
1da177e4 | 58 | struct acpi_processor_cx { |
4be44fcd LB |
59 | u8 valid; |
60 | u8 type; | |
61 | u32 address; | |
bc71bec9 | 62 | u8 entry_method; |
991528d7 | 63 | u8 index; |
4be44fcd | 64 | u32 latency; |
718be4aa | 65 | u8 bm_sts_skip; |
4fcb2fcd | 66 | char desc[ACPI_CX_DESC_LEN]; |
1da177e4 LT |
67 | }; |
68 | ||
69 | struct acpi_processor_power { | |
70 | struct acpi_processor_cx *state; | |
4be44fcd LB |
71 | unsigned long bm_check_timestamp; |
72 | u32 default_state; | |
4be44fcd | 73 | int count; |
1da177e4 | 74 | struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER]; |
169a0abb | 75 | int timer_broadcast_on_state; |
1da177e4 LT |
76 | }; |
77 | ||
78 | /* Performance Management */ | |
79 | ||
3b2d9942 | 80 | struct acpi_psd_package { |
439913ff LM |
81 | u64 num_entries; |
82 | u64 revision; | |
83 | u64 domain; | |
84 | u64 coord_type; | |
85 | u64 num_processors; | |
3b2d9942 VP |
86 | } __attribute__ ((packed)); |
87 | ||
1da177e4 | 88 | struct acpi_pct_register { |
4be44fcd LB |
89 | u8 descriptor; |
90 | u16 length; | |
91 | u8 space_id; | |
92 | u8 bit_width; | |
93 | u8 bit_offset; | |
94 | u8 reserved; | |
95 | u64 address; | |
1da177e4 LT |
96 | } __attribute__ ((packed)); |
97 | ||
98 | struct acpi_processor_px { | |
439913ff LM |
99 | 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 */ | |
1da177e4 LT |
105 | }; |
106 | ||
1da177e4 | 107 | struct acpi_processor_performance { |
4be44fcd LB |
108 | unsigned int state; |
109 | unsigned int platform_limit; | |
1da177e4 LT |
110 | struct acpi_pct_register control_register; |
111 | struct acpi_pct_register status_register; | |
4be44fcd | 112 | unsigned int state_count; |
1da177e4 | 113 | struct acpi_processor_px *states; |
3b2d9942 | 114 | struct acpi_psd_package domain_info; |
2fdf66b4 | 115 | cpumask_var_t shared_cpu_map; |
3b2d9942 | 116 | unsigned int shared_type; |
1da177e4 LT |
117 | }; |
118 | ||
1da177e4 LT |
119 | /* Throttling Control */ |
120 | ||
01854e69 | 121 | struct acpi_tsd_package { |
439913ff LM |
122 | u64 num_entries; |
123 | u64 revision; | |
124 | u64 domain; | |
125 | u64 coord_type; | |
126 | u64 num_processors; | |
01854e69 LY |
127 | } __attribute__ ((packed)); |
128 | ||
129 | struct 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 | ||
139 | struct acpi_processor_tx_tss { | |
439913ff LM |
140 | u64 freqpercentage; /* */ |
141 | u64 power; /* milliWatts */ | |
142 | u64 transition_latency; /* microseconds */ | |
143 | u64 control; /* control value */ | |
144 | u64 status; /* success indicator */ | |
01854e69 | 145 | }; |
1da177e4 | 146 | struct acpi_processor_tx { |
4be44fcd LB |
147 | u16 power; |
148 | u16 performance; | |
1da177e4 LT |
149 | }; |
150 | ||
01854e69 | 151 | struct acpi_processor; |
1da177e4 | 152 | struct acpi_processor_throttling { |
01854e69 LY |
153 | 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; | |
2fdf66b4 | 160 | cpumask_var_t shared_cpu_map; |
ff55a9ce LB |
161 | int (*acpi_processor_get_throttling) (struct acpi_processor * pr); |
162 | int (*acpi_processor_set_throttling) (struct acpi_processor * pr, | |
2a908002 | 163 | int state, bool force); |
01854e69 | 164 | |
4be44fcd LB |
165 | u32 address; |
166 | u8 duty_offset; | |
167 | u8 duty_width; | |
1180509f ZY |
168 | u8 tsd_valid_flag; |
169 | unsigned int shared_type; | |
1da177e4 LT |
170 | struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING]; |
171 | }; | |
172 | ||
173 | /* Limit Interface */ | |
174 | ||
175 | struct acpi_processor_lx { | |
aee07ba6 | 176 | int px; /* performance state */ |
4be44fcd | 177 | int tx; /* throttle level */ |
1da177e4 LT |
178 | }; |
179 | ||
180 | struct acpi_processor_limit { | |
4be44fcd | 181 | struct acpi_processor_lx state; /* current limit */ |
1da177e4 | 182 | struct acpi_processor_lx thermal; /* thermal limit */ |
4be44fcd | 183 | struct acpi_processor_lx user; /* user limit */ |
1da177e4 LT |
184 | }; |
185 | ||
1da177e4 | 186 | struct acpi_processor_flags { |
4be44fcd LB |
187 | 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; | |
4f86d3a8 | 195 | u8 bm_rld_set:1; |
99b72508 | 196 | u8 need_hotplug_init:1; |
1da177e4 LT |
197 | }; |
198 | ||
199 | struct acpi_processor { | |
4be44fcd LB |
200 | acpi_handle handle; |
201 | u32 acpi_id; | |
ca9f62ac | 202 | u32 apic_id; |
4be44fcd LB |
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; |
ac212b69 | 215 | struct device *dev; /* Processor device. */ |
1da177e4 LT |
216 | }; |
217 | ||
218 | struct acpi_processor_errata { | |
4be44fcd | 219 | u8 smp; |
1da177e4 | 220 | struct { |
4be44fcd LB |
221 | u8 throttle:1; |
222 | u8 fdma:1; | |
223 | u8 reserved:6; | |
224 | u32 bmisx; | |
225 | } piix4; | |
1da177e4 LT |
226 | }; |
227 | ||
fd350943 LB |
228 | extern int acpi_processor_preregister_performance(struct |
229 | acpi_processor_performance | |
a29d8b8e | 230 | __percpu *performance); |
3b2d9942 | 231 | |
4be44fcd LB |
232 | extern int acpi_processor_register_performance(struct acpi_processor_performance |
233 | *performance, unsigned int cpu); | |
234 | extern void acpi_processor_unregister_performance(struct | |
235 | acpi_processor_performance | |
236 | *performance, | |
237 | unsigned int cpu); | |
1da177e4 LT |
238 | |
239 | /* note: this locks both the calling module and the processor module | |
240 | if a _PPC object exists, rmmod is disallowed then */ | |
241 | int acpi_processor_notify_smm(struct module *calling_module); | |
242 | ||
c705c78c KRW |
243 | /* parsing the _P* objects. */ |
244 | extern int acpi_processor_get_performance_info(struct acpi_processor *pr); | |
245 | ||
1da177e4 | 246 | /* for communication between multiple parts of the processor kernel module */ |
706546d0 | 247 | DECLARE_PER_CPU(struct acpi_processor *, processors); |
1da177e4 LT |
248 | extern struct acpi_processor_errata errata; |
249 | ||
05131ecc | 250 | #ifdef ARCH_HAS_POWER_INIT |
02df8b93 | 251 | void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags, |
4be44fcd | 252 | unsigned int cpu); |
991528d7 | 253 | int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
254 | struct acpi_processor_cx *cx, |
255 | struct acpi_power_register *reg); | |
991528d7 | 256 | void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate); |
02df8b93 | 257 | #else |
4be44fcd LB |
258 | static inline void acpi_processor_power_init_bm_check(struct |
259 | acpi_processor_flags | |
260 | *flags, unsigned int cpu) | |
02df8b93 VP |
261 | { |
262 | flags->bm_check = 1; | |
263 | return; | |
264 | } | |
991528d7 | 265 | static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
266 | struct acpi_processor_cx *cx, |
267 | struct acpi_power_register | |
268 | *reg) | |
991528d7 VP |
269 | { |
270 | return -1; | |
271 | } | |
fd350943 LB |
272 | static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx |
273 | *cstate) | |
991528d7 VP |
274 | { |
275 | return; | |
276 | } | |
02df8b93 VP |
277 | #endif |
278 | ||
1da177e4 | 279 | /* in processor_perflib.c */ |
02df8b93 | 280 | |
1da177e4 LT |
281 | #ifdef CONFIG_CPU_FREQ |
282 | void acpi_processor_ppc_init(void); | |
283 | void acpi_processor_ppc_exit(void); | |
d81c45e1 | 284 | int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag); |
e2f74f35 | 285 | extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit); |
1da177e4 | 286 | #else |
4be44fcd LB |
287 | static inline void acpi_processor_ppc_init(void) |
288 | { | |
289 | return; | |
290 | } | |
291 | static inline void acpi_processor_ppc_exit(void) | |
292 | { | |
293 | return; | |
294 | } | |
d81c45e1 ZY |
295 | static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr, |
296 | int event_flag) | |
4be44fcd | 297 | { |
1da177e4 LT |
298 | static unsigned int printout = 1; |
299 | if (printout) { | |
4be44fcd LB |
300 | 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"); | |
1da177e4 LT |
304 | printout = 0; |
305 | } | |
306 | return 0; | |
307 | } | |
e2f74f35 TR |
308 | static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit) |
309 | { | |
310 | return -ENODEV; | |
311 | } | |
312 | ||
4be44fcd | 313 | #endif /* CONFIG_CPU_FREQ */ |
1da177e4 | 314 | |
4d5d4cd8 | 315 | /* in processor_core.c */ |
43bab25c | 316 | void acpi_processor_set_pdc(acpi_handle handle); |
ca9f62ac JL |
317 | int acpi_get_apicid(acpi_handle, int type, u32 acpi_id); |
318 | int acpi_map_cpuid(int apic_id, u32 acpi_id); | |
2e9d5e4e | 319 | int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); |
78f16996 | 320 | |
1da177e4 | 321 | /* in processor_throttling.c */ |
a66b34b2 | 322 | int acpi_processor_tstate_has_changed(struct acpi_processor *pr); |
4be44fcd | 323 | int acpi_processor_get_throttling_info(struct acpi_processor *pr); |
2a908002 FP |
324 | extern int acpi_processor_set_throttling(struct acpi_processor *pr, |
325 | int state, bool force); | |
5a344a50 ZY |
326 | /* |
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 | */ | |
330 | extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, | |
331 | unsigned long action); | |
070d8eb1 | 332 | extern const struct file_operations acpi_processor_throttling_fops; |
1180509f | 333 | extern void acpi_processor_throttling_init(void); |
1da177e4 | 334 | /* in processor_idle.c */ |
38a991b6 DL |
335 | int acpi_processor_power_init(struct acpi_processor *pr); |
336 | int acpi_processor_power_exit(struct acpi_processor *pr); | |
4be44fcd | 337 | int acpi_processor_cst_has_changed(struct acpi_processor *pr); |
46bcfad7 | 338 | int acpi_processor_hotplug(struct acpi_processor *pr); |
4f86d3a8 | 339 | extern struct cpuidle_driver acpi_idle_driver; |
1da177e4 | 340 | |
0a3b15ac RW |
341 | #ifdef CONFIG_PM_SLEEP |
342 | void acpi_processor_syscore_init(void); | |
343 | void acpi_processor_syscore_exit(void); | |
344 | #else | |
345 | static inline void acpi_processor_syscore_init(void) {} | |
346 | static inline void acpi_processor_syscore_exit(void) {} | |
347 | #endif | |
348 | ||
1da177e4 | 349 | /* in processor_thermal.c */ |
4be44fcd | 350 | int acpi_processor_get_limit_info(struct acpi_processor *pr); |
9c8b04be | 351 | extern const struct thermal_cooling_device_ops processor_cooling_ops; |
1da177e4 LT |
352 | #ifdef CONFIG_CPU_FREQ |
353 | void acpi_thermal_cpufreq_init(void); | |
354 | void acpi_thermal_cpufreq_exit(void); | |
355 | #else | |
4be44fcd LB |
356 | static inline void acpi_thermal_cpufreq_init(void) |
357 | { | |
358 | return; | |
359 | } | |
360 | static inline void acpi_thermal_cpufreq_exit(void) | |
361 | { | |
362 | return; | |
363 | } | |
1da177e4 LT |
364 | #endif |
365 | ||
1da177e4 | 366 | #endif |