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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 | ||
1da177e4 LT |
9 | #define ACPI_PROCESSOR_BUSY_METRIC 10 |
10 | ||
11 | #define ACPI_PROCESSOR_MAX_POWER 8 | |
12 | #define ACPI_PROCESSOR_MAX_C2_LATENCY 100 | |
13 | #define ACPI_PROCESSOR_MAX_C3_LATENCY 1000 | |
14 | ||
15 | #define ACPI_PROCESSOR_MAX_THROTTLING 16 | |
16 | #define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */ | |
17 | #define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4 | |
18 | ||
02df8b93 VP |
19 | #define ACPI_PDC_REVISION_ID 0x1 |
20 | ||
fd350943 | 21 | #define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */ |
3b2d9942 VP |
22 | #define ACPI_PSD_REV0_ENTRIES 5 |
23 | ||
01854e69 LY |
24 | #define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */ |
25 | #define ACPI_TSD_REV0_ENTRIES 5 | |
3b2d9942 VP |
26 | /* |
27 | * Types of coordination defined in ACPI 3.0. Same macros can be used across | |
28 | * P, C and T states | |
29 | */ | |
30 | #define DOMAIN_COORD_TYPE_SW_ALL 0xfc | |
31 | #define DOMAIN_COORD_TYPE_SW_ANY 0xfd | |
32 | #define DOMAIN_COORD_TYPE_HW_ALL 0xfe | |
33 | ||
4fcb2fcd VP |
34 | #define ACPI_CSTATE_SYSTEMIO 0 |
35 | #define ACPI_CSTATE_FFH 1 | |
36 | #define ACPI_CSTATE_HALT 2 | |
37 | ||
38 | #define ACPI_CX_DESC_LEN 32 | |
991528d7 | 39 | |
1da177e4 LT |
40 | /* Power Management */ |
41 | ||
42 | struct acpi_processor_cx; | |
43 | ||
44 | struct acpi_power_register { | |
4be44fcd LB |
45 | u8 descriptor; |
46 | u16 length; | |
47 | u8 space_id; | |
48 | u8 bit_width; | |
49 | u8 bit_offset; | |
718be4aa | 50 | u8 access_size; |
4be44fcd | 51 | u64 address; |
1da177e4 LT |
52 | } __attribute__ ((packed)); |
53 | ||
1da177e4 | 54 | struct acpi_processor_cx { |
4be44fcd LB |
55 | u8 valid; |
56 | u8 type; | |
57 | u32 address; | |
bc71bec9 | 58 | u8 entry_method; |
991528d7 | 59 | u8 index; |
4be44fcd | 60 | u32 latency; |
718be4aa | 61 | u8 bm_sts_skip; |
4fcb2fcd | 62 | char desc[ACPI_CX_DESC_LEN]; |
1da177e4 LT |
63 | }; |
64 | ||
65 | struct acpi_processor_power { | |
66 | struct acpi_processor_cx *state; | |
4be44fcd LB |
67 | unsigned long bm_check_timestamp; |
68 | u32 default_state; | |
4be44fcd | 69 | int count; |
1da177e4 | 70 | struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER]; |
169a0abb | 71 | int timer_broadcast_on_state; |
1da177e4 LT |
72 | }; |
73 | ||
74 | /* Performance Management */ | |
75 | ||
3b2d9942 | 76 | struct acpi_psd_package { |
439913ff LM |
77 | u64 num_entries; |
78 | u64 revision; | |
79 | u64 domain; | |
80 | u64 coord_type; | |
81 | u64 num_processors; | |
3b2d9942 VP |
82 | } __attribute__ ((packed)); |
83 | ||
1da177e4 | 84 | struct acpi_pct_register { |
4be44fcd LB |
85 | u8 descriptor; |
86 | u16 length; | |
87 | u8 space_id; | |
88 | u8 bit_width; | |
89 | u8 bit_offset; | |
90 | u8 reserved; | |
91 | u64 address; | |
1da177e4 LT |
92 | } __attribute__ ((packed)); |
93 | ||
94 | struct acpi_processor_px { | |
439913ff LM |
95 | u64 core_frequency; /* megahertz */ |
96 | u64 power; /* milliWatts */ | |
97 | u64 transition_latency; /* microseconds */ | |
98 | u64 bus_master_latency; /* microseconds */ | |
99 | u64 control; /* control value */ | |
100 | u64 status; /* success indicator */ | |
1da177e4 LT |
101 | }; |
102 | ||
1da177e4 | 103 | struct acpi_processor_performance { |
4be44fcd LB |
104 | unsigned int state; |
105 | unsigned int platform_limit; | |
1da177e4 LT |
106 | struct acpi_pct_register control_register; |
107 | struct acpi_pct_register status_register; | |
4be44fcd | 108 | unsigned int state_count; |
1da177e4 | 109 | struct acpi_processor_px *states; |
3b2d9942 | 110 | struct acpi_psd_package domain_info; |
2fdf66b4 | 111 | cpumask_var_t shared_cpu_map; |
3b2d9942 | 112 | unsigned int shared_type; |
1da177e4 LT |
113 | }; |
114 | ||
1da177e4 LT |
115 | /* Throttling Control */ |
116 | ||
01854e69 | 117 | struct acpi_tsd_package { |
439913ff LM |
118 | u64 num_entries; |
119 | u64 revision; | |
120 | u64 domain; | |
121 | u64 coord_type; | |
122 | u64 num_processors; | |
01854e69 LY |
123 | } __attribute__ ((packed)); |
124 | ||
125 | struct acpi_ptc_register { | |
126 | u8 descriptor; | |
127 | u16 length; | |
128 | u8 space_id; | |
129 | u8 bit_width; | |
130 | u8 bit_offset; | |
131 | u8 reserved; | |
132 | u64 address; | |
133 | } __attribute__ ((packed)); | |
134 | ||
135 | struct acpi_processor_tx_tss { | |
439913ff LM |
136 | u64 freqpercentage; /* */ |
137 | u64 power; /* milliWatts */ | |
138 | u64 transition_latency; /* microseconds */ | |
139 | u64 control; /* control value */ | |
140 | u64 status; /* success indicator */ | |
01854e69 | 141 | }; |
1da177e4 | 142 | struct acpi_processor_tx { |
4be44fcd LB |
143 | u16 power; |
144 | u16 performance; | |
1da177e4 LT |
145 | }; |
146 | ||
01854e69 | 147 | struct acpi_processor; |
1da177e4 | 148 | struct acpi_processor_throttling { |
01854e69 LY |
149 | unsigned int state; |
150 | unsigned int platform_limit; | |
151 | struct acpi_pct_register control_register; | |
152 | struct acpi_pct_register status_register; | |
153 | unsigned int state_count; | |
154 | struct acpi_processor_tx_tss *states_tss; | |
155 | struct acpi_tsd_package domain_info; | |
2fdf66b4 | 156 | cpumask_var_t shared_cpu_map; |
ff55a9ce LB |
157 | int (*acpi_processor_get_throttling) (struct acpi_processor * pr); |
158 | int (*acpi_processor_set_throttling) (struct acpi_processor * pr, | |
2a908002 | 159 | int state, bool force); |
01854e69 | 160 | |
4be44fcd LB |
161 | u32 address; |
162 | u8 duty_offset; | |
163 | u8 duty_width; | |
1180509f ZY |
164 | u8 tsd_valid_flag; |
165 | unsigned int shared_type; | |
1da177e4 LT |
166 | struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING]; |
167 | }; | |
168 | ||
169 | /* Limit Interface */ | |
170 | ||
171 | struct acpi_processor_lx { | |
aee07ba6 | 172 | int px; /* performance state */ |
4be44fcd | 173 | int tx; /* throttle level */ |
1da177e4 LT |
174 | }; |
175 | ||
176 | struct acpi_processor_limit { | |
4be44fcd | 177 | struct acpi_processor_lx state; /* current limit */ |
1da177e4 | 178 | struct acpi_processor_lx thermal; /* thermal limit */ |
4be44fcd | 179 | struct acpi_processor_lx user; /* user limit */ |
1da177e4 LT |
180 | }; |
181 | ||
1da177e4 | 182 | struct acpi_processor_flags { |
4be44fcd LB |
183 | u8 power:1; |
184 | u8 performance:1; | |
185 | u8 throttling:1; | |
186 | u8 limit:1; | |
187 | u8 bm_control:1; | |
188 | u8 bm_check:1; | |
189 | u8 has_cst:1; | |
190 | u8 power_setup_done:1; | |
4f86d3a8 | 191 | u8 bm_rld_set:1; |
99b72508 | 192 | u8 need_hotplug_init:1; |
1da177e4 LT |
193 | }; |
194 | ||
195 | struct acpi_processor { | |
4be44fcd LB |
196 | acpi_handle handle; |
197 | u32 acpi_id; | |
198 | u32 id; | |
199 | u32 pblk; | |
200 | int performance_platform_limit; | |
01854e69 | 201 | int throttling_platform_limit; |
ff55a9ce | 202 | /* 0 - states 0..n-th state available */ |
01854e69 | 203 | |
1da177e4 LT |
204 | struct acpi_processor_flags flags; |
205 | struct acpi_processor_power power; | |
206 | struct acpi_processor_performance *performance; | |
207 | struct acpi_processor_throttling throttling; | |
208 | struct acpi_processor_limit limit; | |
d9460fd2 | 209 | struct thermal_cooling_device *cdev; |
1da177e4 LT |
210 | }; |
211 | ||
212 | struct acpi_processor_errata { | |
4be44fcd | 213 | u8 smp; |
1da177e4 | 214 | struct { |
4be44fcd LB |
215 | u8 throttle:1; |
216 | u8 fdma:1; | |
217 | u8 reserved:6; | |
218 | u32 bmisx; | |
219 | } piix4; | |
1da177e4 LT |
220 | }; |
221 | ||
9061e0e1 | 222 | extern void acpi_processor_load_module(struct acpi_processor *pr); |
fd350943 LB |
223 | extern int acpi_processor_preregister_performance(struct |
224 | acpi_processor_performance | |
a29d8b8e | 225 | __percpu *performance); |
3b2d9942 | 226 | |
4be44fcd LB |
227 | extern int acpi_processor_register_performance(struct acpi_processor_performance |
228 | *performance, unsigned int cpu); | |
229 | extern void acpi_processor_unregister_performance(struct | |
230 | acpi_processor_performance | |
231 | *performance, | |
232 | 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 */ |
43bab25c | 311 | void acpi_processor_set_pdc(acpi_handle handle); |
2e9d5e4e | 312 | int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); |
78f16996 | 313 | |
1da177e4 | 314 | /* in processor_throttling.c */ |
a66b34b2 | 315 | int acpi_processor_tstate_has_changed(struct acpi_processor *pr); |
4be44fcd | 316 | int acpi_processor_get_throttling_info(struct acpi_processor *pr); |
2a908002 FP |
317 | extern int acpi_processor_set_throttling(struct acpi_processor *pr, |
318 | int state, bool force); | |
5a344a50 ZY |
319 | /* |
320 | * Reevaluate whether the T-state is invalid after one cpu is | |
321 | * onlined/offlined. In such case the flags.throttling will be updated. | |
322 | */ | |
323 | extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, | |
324 | unsigned long action); | |
070d8eb1 | 325 | extern const struct file_operations acpi_processor_throttling_fops; |
1180509f | 326 | extern void acpi_processor_throttling_init(void); |
1da177e4 | 327 | /* in processor_idle.c */ |
38a991b6 DL |
328 | int acpi_processor_power_init(struct acpi_processor *pr); |
329 | int acpi_processor_power_exit(struct acpi_processor *pr); | |
4be44fcd | 330 | int acpi_processor_cst_has_changed(struct acpi_processor *pr); |
46bcfad7 | 331 | int acpi_processor_hotplug(struct acpi_processor *pr); |
4f86d3a8 | 332 | extern struct cpuidle_driver acpi_idle_driver; |
1da177e4 | 333 | |
0a3b15ac RW |
334 | #ifdef CONFIG_PM_SLEEP |
335 | void acpi_processor_syscore_init(void); | |
336 | void acpi_processor_syscore_exit(void); | |
337 | #else | |
338 | static inline void acpi_processor_syscore_init(void) {} | |
339 | static inline void acpi_processor_syscore_exit(void) {} | |
340 | #endif | |
341 | ||
1da177e4 | 342 | /* in processor_thermal.c */ |
4be44fcd | 343 | int acpi_processor_get_limit_info(struct acpi_processor *pr); |
9c8b04be | 344 | extern const struct thermal_cooling_device_ops processor_cooling_ops; |
1da177e4 LT |
345 | #ifdef CONFIG_CPU_FREQ |
346 | void acpi_thermal_cpufreq_init(void); | |
347 | void acpi_thermal_cpufreq_exit(void); | |
348 | #else | |
4be44fcd LB |
349 | static inline void acpi_thermal_cpufreq_init(void) |
350 | { | |
351 | return; | |
352 | } | |
353 | static inline void acpi_thermal_cpufreq_exit(void) | |
354 | { | |
355 | return; | |
356 | } | |
1da177e4 LT |
357 | #endif |
358 | ||
1da177e4 | 359 | #endif |