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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 | 61 | u32 latency; |
718be4aa | 62 | u8 bm_sts_skip; |
4fcb2fcd | 63 | char desc[ACPI_CX_DESC_LEN]; |
1da177e4 LT |
64 | }; |
65 | ||
66 | struct acpi_processor_power { | |
4f86d3a8 | 67 | struct cpuidle_device dev; |
1da177e4 | 68 | struct acpi_processor_cx *state; |
4be44fcd LB |
69 | unsigned long bm_check_timestamp; |
70 | u32 default_state; | |
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; | |
3b2d9942 VP |
84 | } __attribute__ ((packed)); |
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; | |
1da177e4 LT |
94 | } __attribute__ ((packed)); |
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; | |
01854e69 LY |
125 | } __attribute__ ((packed)); |
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; | |
135 | } __attribute__ ((packed)); | |
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; | |
200 | u32 id; | |
201 | u32 pblk; | |
202 | int performance_platform_limit; | |
01854e69 | 203 | int throttling_platform_limit; |
ff55a9ce | 204 | /* 0 - states 0..n-th state available */ |
01854e69 | 205 | |
1da177e4 LT |
206 | struct acpi_processor_flags flags; |
207 | struct acpi_processor_power power; | |
208 | struct acpi_processor_performance *performance; | |
209 | struct acpi_processor_throttling throttling; | |
210 | struct acpi_processor_limit limit; | |
d9460fd2 | 211 | struct thermal_cooling_device *cdev; |
1da177e4 LT |
212 | }; |
213 | ||
214 | struct acpi_processor_errata { | |
4be44fcd | 215 | u8 smp; |
1da177e4 | 216 | struct { |
4be44fcd LB |
217 | u8 throttle:1; |
218 | u8 fdma:1; | |
219 | u8 reserved:6; | |
220 | u32 bmisx; | |
221 | } piix4; | |
1da177e4 LT |
222 | }; |
223 | ||
9061e0e1 | 224 | extern void acpi_processor_load_module(struct acpi_processor *pr); |
fd350943 LB |
225 | extern int acpi_processor_preregister_performance(struct |
226 | acpi_processor_performance | |
a29d8b8e | 227 | __percpu *performance); |
3b2d9942 | 228 | |
4be44fcd LB |
229 | extern int acpi_processor_register_performance(struct acpi_processor_performance |
230 | *performance, unsigned int cpu); | |
231 | extern void acpi_processor_unregister_performance(struct | |
232 | acpi_processor_performance | |
233 | *performance, | |
234 | unsigned int cpu); | |
1da177e4 LT |
235 | |
236 | /* note: this locks both the calling module and the processor module | |
237 | if a _PPC object exists, rmmod is disallowed then */ | |
238 | int acpi_processor_notify_smm(struct module *calling_module); | |
239 | ||
1da177e4 | 240 | /* for communication between multiple parts of the processor kernel module */ |
706546d0 | 241 | DECLARE_PER_CPU(struct acpi_processor *, processors); |
1da177e4 LT |
242 | extern struct acpi_processor_errata errata; |
243 | ||
05131ecc | 244 | #ifdef ARCH_HAS_POWER_INIT |
02df8b93 | 245 | void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags, |
4be44fcd | 246 | unsigned int cpu); |
991528d7 | 247 | int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
248 | struct acpi_processor_cx *cx, |
249 | struct acpi_power_register *reg); | |
991528d7 | 250 | void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate); |
02df8b93 | 251 | #else |
4be44fcd LB |
252 | static inline void acpi_processor_power_init_bm_check(struct |
253 | acpi_processor_flags | |
254 | *flags, unsigned int cpu) | |
02df8b93 VP |
255 | { |
256 | flags->bm_check = 1; | |
257 | return; | |
258 | } | |
991528d7 | 259 | static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
260 | struct acpi_processor_cx *cx, |
261 | struct acpi_power_register | |
262 | *reg) | |
991528d7 VP |
263 | { |
264 | return -1; | |
265 | } | |
fd350943 LB |
266 | static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx |
267 | *cstate) | |
991528d7 VP |
268 | { |
269 | return; | |
270 | } | |
02df8b93 VP |
271 | #endif |
272 | ||
1da177e4 | 273 | /* in processor_perflib.c */ |
02df8b93 | 274 | |
1da177e4 LT |
275 | #ifdef CONFIG_CPU_FREQ |
276 | void acpi_processor_ppc_init(void); | |
277 | void acpi_processor_ppc_exit(void); | |
d81c45e1 | 278 | int acpi_processor_ppc_has_changed(struct acpi_processor *pr, int event_flag); |
e2f74f35 | 279 | extern int acpi_processor_get_bios_limit(int cpu, unsigned int *limit); |
1da177e4 | 280 | #else |
4be44fcd LB |
281 | static inline void acpi_processor_ppc_init(void) |
282 | { | |
283 | return; | |
284 | } | |
285 | static inline void acpi_processor_ppc_exit(void) | |
286 | { | |
287 | return; | |
288 | } | |
d81c45e1 ZY |
289 | static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr, |
290 | int event_flag) | |
4be44fcd | 291 | { |
1da177e4 LT |
292 | static unsigned int printout = 1; |
293 | if (printout) { | |
4be44fcd LB |
294 | printk(KERN_WARNING |
295 | "Warning: Processor Platform Limit event detected, but not handled.\n"); | |
296 | printk(KERN_WARNING | |
297 | "Consider compiling CPUfreq support into your kernel.\n"); | |
1da177e4 LT |
298 | printout = 0; |
299 | } | |
300 | return 0; | |
301 | } | |
e2f74f35 TR |
302 | static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit) |
303 | { | |
304 | return -ENODEV; | |
305 | } | |
306 | ||
4be44fcd | 307 | #endif /* CONFIG_CPU_FREQ */ |
1da177e4 | 308 | |
4d5d4cd8 | 309 | /* in processor_core.c */ |
43bab25c | 310 | void acpi_processor_set_pdc(acpi_handle handle); |
2e9d5e4e | 311 | int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); |
78f16996 | 312 | |
1da177e4 | 313 | /* in processor_throttling.c */ |
a66b34b2 | 314 | int acpi_processor_tstate_has_changed(struct acpi_processor *pr); |
4be44fcd | 315 | int acpi_processor_get_throttling_info(struct acpi_processor *pr); |
2a908002 FP |
316 | extern int acpi_processor_set_throttling(struct acpi_processor *pr, |
317 | int state, bool force); | |
5a344a50 ZY |
318 | /* |
319 | * Reevaluate whether the T-state is invalid after one cpu is | |
320 | * onlined/offlined. In such case the flags.throttling will be updated. | |
321 | */ | |
322 | extern void acpi_processor_reevaluate_tstate(struct acpi_processor *pr, | |
323 | unsigned long action); | |
070d8eb1 | 324 | extern const struct file_operations acpi_processor_throttling_fops; |
1180509f | 325 | extern void acpi_processor_throttling_init(void); |
1da177e4 | 326 | /* in processor_idle.c */ |
4be44fcd LB |
327 | int acpi_processor_power_init(struct acpi_processor *pr, |
328 | struct acpi_device *device); | |
329 | int acpi_processor_cst_has_changed(struct acpi_processor *pr); | |
46bcfad7 | 330 | int acpi_processor_hotplug(struct acpi_processor *pr); |
4be44fcd LB |
331 | int acpi_processor_power_exit(struct acpi_processor *pr, |
332 | struct acpi_device *device); | |
e8110b64 RW |
333 | int acpi_processor_suspend(struct device *dev); |
334 | int acpi_processor_resume(struct device *dev); | |
4f86d3a8 | 335 | extern struct cpuidle_driver acpi_idle_driver; |
1da177e4 LT |
336 | |
337 | /* in processor_thermal.c */ | |
4be44fcd | 338 | int acpi_processor_get_limit_info(struct acpi_processor *pr); |
9c8b04be | 339 | extern const struct thermal_cooling_device_ops processor_cooling_ops; |
1da177e4 LT |
340 | #ifdef CONFIG_CPU_FREQ |
341 | void acpi_thermal_cpufreq_init(void); | |
342 | void acpi_thermal_cpufreq_exit(void); | |
343 | #else | |
4be44fcd LB |
344 | static inline void acpi_thermal_cpufreq_init(void) |
345 | { | |
346 | return; | |
347 | } | |
348 | static inline void acpi_thermal_cpufreq_exit(void) | |
349 | { | |
350 | return; | |
351 | } | |
1da177e4 LT |
352 | #endif |
353 | ||
1da177e4 | 354 | #endif |