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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> |
1da177e4 | 6 | |
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 | ||
991528d7 VP |
34 | #define ACPI_CSTATE_SYSTEMIO (0) |
35 | #define ACPI_CSTATE_FFH (1) | |
36 | ||
1da177e4 LT |
37 | /* Power Management */ |
38 | ||
39 | struct acpi_processor_cx; | |
40 | ||
41 | struct acpi_power_register { | |
4be44fcd LB |
42 | u8 descriptor; |
43 | u16 length; | |
44 | u8 space_id; | |
45 | u8 bit_width; | |
46 | u8 bit_offset; | |
47 | u8 reserved; | |
48 | u64 address; | |
1da177e4 LT |
49 | } __attribute__ ((packed)); |
50 | ||
1da177e4 | 51 | struct acpi_processor_cx_policy { |
4be44fcd | 52 | u32 count; |
1da177e4 LT |
53 | struct acpi_processor_cx *state; |
54 | struct { | |
4be44fcd LB |
55 | u32 time; |
56 | u32 ticks; | |
57 | u32 count; | |
58 | u32 bm; | |
59 | } threshold; | |
1da177e4 LT |
60 | }; |
61 | ||
62 | struct acpi_processor_cx { | |
4be44fcd LB |
63 | u8 valid; |
64 | u8 type; | |
65 | u32 address; | |
991528d7 VP |
66 | u8 space_id; |
67 | u8 index; | |
4be44fcd LB |
68 | u32 latency; |
69 | u32 latency_ticks; | |
70 | u32 power; | |
71 | u32 usage; | |
a3c6598f | 72 | u64 time; |
1da177e4 LT |
73 | struct acpi_processor_cx_policy promotion; |
74 | struct acpi_processor_cx_policy demotion; | |
75 | }; | |
76 | ||
77 | struct acpi_processor_power { | |
78 | struct acpi_processor_cx *state; | |
4be44fcd LB |
79 | unsigned long bm_check_timestamp; |
80 | u32 default_state; | |
81 | u32 bm_activity; | |
82 | int count; | |
1da177e4 | 83 | struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER]; |
169a0abb | 84 | int timer_broadcast_on_state; |
1da177e4 LT |
85 | }; |
86 | ||
87 | /* Performance Management */ | |
88 | ||
3b2d9942 VP |
89 | struct acpi_psd_package { |
90 | acpi_integer num_entries; | |
91 | acpi_integer revision; | |
92 | acpi_integer domain; | |
93 | acpi_integer coord_type; | |
94 | acpi_integer num_processors; | |
95 | } __attribute__ ((packed)); | |
96 | ||
1da177e4 | 97 | struct acpi_pct_register { |
4be44fcd LB |
98 | u8 descriptor; |
99 | u16 length; | |
100 | u8 space_id; | |
101 | u8 bit_width; | |
102 | u8 bit_offset; | |
103 | u8 reserved; | |
104 | u64 address; | |
1da177e4 LT |
105 | } __attribute__ ((packed)); |
106 | ||
107 | struct acpi_processor_px { | |
4be44fcd LB |
108 | acpi_integer core_frequency; /* megahertz */ |
109 | acpi_integer power; /* milliWatts */ | |
110 | acpi_integer transition_latency; /* microseconds */ | |
111 | acpi_integer bus_master_latency; /* microseconds */ | |
112 | acpi_integer control; /* control value */ | |
113 | acpi_integer status; /* success indicator */ | |
1da177e4 LT |
114 | }; |
115 | ||
1da177e4 | 116 | struct acpi_processor_performance { |
4be44fcd LB |
117 | unsigned int state; |
118 | unsigned int platform_limit; | |
1da177e4 LT |
119 | struct acpi_pct_register control_register; |
120 | struct acpi_pct_register status_register; | |
4be44fcd | 121 | unsigned int state_count; |
1da177e4 | 122 | struct acpi_processor_px *states; |
3b2d9942 VP |
123 | struct acpi_psd_package domain_info; |
124 | cpumask_t shared_cpu_map; | |
125 | unsigned int shared_type; | |
1da177e4 LT |
126 | }; |
127 | ||
1da177e4 LT |
128 | /* Throttling Control */ |
129 | ||
01854e69 LY |
130 | struct acpi_tsd_package { |
131 | acpi_integer num_entries; | |
132 | acpi_integer revision; | |
133 | acpi_integer domain; | |
134 | acpi_integer coord_type; | |
135 | acpi_integer num_processors; | |
136 | } __attribute__ ((packed)); | |
137 | ||
138 | struct acpi_ptc_register { | |
139 | u8 descriptor; | |
140 | u16 length; | |
141 | u8 space_id; | |
142 | u8 bit_width; | |
143 | u8 bit_offset; | |
144 | u8 reserved; | |
145 | u64 address; | |
146 | } __attribute__ ((packed)); | |
147 | ||
148 | struct acpi_processor_tx_tss { | |
149 | acpi_integer freqpercentage; /* */ | |
150 | acpi_integer power; /* milliWatts */ | |
151 | acpi_integer transition_latency; /* microseconds */ | |
152 | acpi_integer control; /* control value */ | |
153 | acpi_integer status; /* success indicator */ | |
154 | }; | |
1da177e4 | 155 | struct acpi_processor_tx { |
4be44fcd LB |
156 | u16 power; |
157 | u16 performance; | |
1da177e4 LT |
158 | }; |
159 | ||
01854e69 | 160 | struct acpi_processor; |
1da177e4 | 161 | struct acpi_processor_throttling { |
01854e69 LY |
162 | unsigned int state; |
163 | unsigned int platform_limit; | |
164 | struct acpi_pct_register control_register; | |
165 | struct acpi_pct_register status_register; | |
166 | unsigned int state_count; | |
167 | struct acpi_processor_tx_tss *states_tss; | |
168 | struct acpi_tsd_package domain_info; | |
169 | cpumask_t shared_cpu_map; | |
ff55a9ce LB |
170 | int (*acpi_processor_get_throttling) (struct acpi_processor * pr); |
171 | int (*acpi_processor_set_throttling) (struct acpi_processor * pr, | |
172 | int state); | |
01854e69 | 173 | |
4be44fcd LB |
174 | u32 address; |
175 | u8 duty_offset; | |
176 | u8 duty_width; | |
1da177e4 LT |
177 | struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING]; |
178 | }; | |
179 | ||
180 | /* Limit Interface */ | |
181 | ||
182 | struct acpi_processor_lx { | |
4be44fcd LB |
183 | int px; /* performace state */ |
184 | int tx; /* throttle level */ | |
1da177e4 LT |
185 | }; |
186 | ||
187 | struct acpi_processor_limit { | |
4be44fcd | 188 | struct acpi_processor_lx state; /* current limit */ |
1da177e4 | 189 | struct acpi_processor_lx thermal; /* thermal limit */ |
4be44fcd | 190 | struct acpi_processor_lx user; /* user limit */ |
1da177e4 LT |
191 | }; |
192 | ||
1da177e4 | 193 | struct acpi_processor_flags { |
4be44fcd LB |
194 | u8 power:1; |
195 | u8 performance:1; | |
196 | u8 throttling:1; | |
197 | u8 limit:1; | |
198 | u8 bm_control:1; | |
199 | u8 bm_check:1; | |
200 | u8 has_cst:1; | |
201 | u8 power_setup_done:1; | |
1da177e4 LT |
202 | }; |
203 | ||
204 | struct acpi_processor { | |
4be44fcd LB |
205 | acpi_handle handle; |
206 | u32 acpi_id; | |
207 | u32 id; | |
208 | u32 pblk; | |
209 | int performance_platform_limit; | |
01854e69 | 210 | int throttling_platform_limit; |
ff55a9ce | 211 | /* 0 - states 0..n-th state available */ |
01854e69 | 212 | |
1da177e4 LT |
213 | struct acpi_processor_flags flags; |
214 | struct acpi_processor_power power; | |
215 | struct acpi_processor_performance *performance; | |
216 | struct acpi_processor_throttling throttling; | |
217 | struct acpi_processor_limit limit; | |
05131ecc VP |
218 | |
219 | /* the _PDC objects for this processor, if any */ | |
220 | struct acpi_object_list *pdc; | |
1da177e4 LT |
221 | }; |
222 | ||
223 | struct acpi_processor_errata { | |
4be44fcd | 224 | u8 smp; |
1da177e4 | 225 | struct { |
4be44fcd LB |
226 | u8 throttle:1; |
227 | u8 fdma:1; | |
228 | u8 reserved:6; | |
229 | u32 bmisx; | |
230 | } piix4; | |
1da177e4 LT |
231 | }; |
232 | ||
fd350943 LB |
233 | extern int acpi_processor_preregister_performance(struct |
234 | acpi_processor_performance | |
50109292 | 235 | *performance); |
3b2d9942 | 236 | |
4be44fcd LB |
237 | extern int acpi_processor_register_performance(struct acpi_processor_performance |
238 | *performance, unsigned int cpu); | |
239 | extern void acpi_processor_unregister_performance(struct | |
240 | acpi_processor_performance | |
241 | *performance, | |
242 | unsigned int cpu); | |
1da177e4 LT |
243 | |
244 | /* note: this locks both the calling module and the processor module | |
245 | if a _PPC object exists, rmmod is disallowed then */ | |
246 | int acpi_processor_notify_smm(struct module *calling_module); | |
247 | ||
1da177e4 | 248 | /* for communication between multiple parts of the processor kernel module */ |
4be44fcd | 249 | extern struct acpi_processor *processors[NR_CPUS]; |
1da177e4 LT |
250 | extern struct acpi_processor_errata errata; |
251 | ||
05131ecc | 252 | void arch_acpi_processor_init_pdc(struct acpi_processor *pr); |
02df8b93 | 253 | |
05131ecc | 254 | #ifdef ARCH_HAS_POWER_INIT |
02df8b93 | 255 | void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags, |
4be44fcd | 256 | unsigned int cpu); |
991528d7 | 257 | int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
258 | struct acpi_processor_cx *cx, |
259 | struct acpi_power_register *reg); | |
991528d7 | 260 | void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate); |
02df8b93 | 261 | #else |
4be44fcd LB |
262 | static inline void acpi_processor_power_init_bm_check(struct |
263 | acpi_processor_flags | |
264 | *flags, unsigned int cpu) | |
02df8b93 VP |
265 | { |
266 | flags->bm_check = 1; | |
267 | return; | |
268 | } | |
991528d7 | 269 | static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu, |
fd350943 LB |
270 | struct acpi_processor_cx *cx, |
271 | struct acpi_power_register | |
272 | *reg) | |
991528d7 VP |
273 | { |
274 | return -1; | |
275 | } | |
fd350943 LB |
276 | static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx |
277 | *cstate) | |
991528d7 VP |
278 | { |
279 | return; | |
280 | } | |
02df8b93 VP |
281 | #endif |
282 | ||
1da177e4 | 283 | /* in processor_perflib.c */ |
02df8b93 | 284 | |
1da177e4 LT |
285 | #ifdef CONFIG_CPU_FREQ |
286 | void acpi_processor_ppc_init(void); | |
287 | void acpi_processor_ppc_exit(void); | |
288 | int acpi_processor_ppc_has_changed(struct acpi_processor *pr); | |
289 | #else | |
4be44fcd LB |
290 | static inline void acpi_processor_ppc_init(void) |
291 | { | |
292 | return; | |
293 | } | |
294 | static inline void acpi_processor_ppc_exit(void) | |
295 | { | |
296 | return; | |
297 | } | |
298 | static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr) | |
299 | { | |
1da177e4 LT |
300 | static unsigned int printout = 1; |
301 | if (printout) { | |
4be44fcd LB |
302 | printk(KERN_WARNING |
303 | "Warning: Processor Platform Limit event detected, but not handled.\n"); | |
304 | printk(KERN_WARNING | |
305 | "Consider compiling CPUfreq support into your kernel.\n"); | |
1da177e4 LT |
306 | printout = 0; |
307 | } | |
308 | return 0; | |
309 | } | |
4be44fcd | 310 | #endif /* CONFIG_CPU_FREQ */ |
1da177e4 LT |
311 | |
312 | /* in processor_throttling.c */ | |
4be44fcd | 313 | int acpi_processor_get_throttling_info(struct acpi_processor *pr); |
01854e69 | 314 | extern int acpi_processor_set_throttling(struct acpi_processor *pr, int state); |
1da177e4 LT |
315 | extern struct file_operations acpi_processor_throttling_fops; |
316 | ||
317 | /* in processor_idle.c */ | |
4be44fcd LB |
318 | int acpi_processor_power_init(struct acpi_processor *pr, |
319 | struct acpi_device *device); | |
320 | int acpi_processor_cst_has_changed(struct acpi_processor *pr); | |
321 | int acpi_processor_power_exit(struct acpi_processor *pr, | |
322 | struct acpi_device *device); | |
b04e7bdb TG |
323 | int acpi_processor_suspend(struct acpi_device * device, pm_message_t state); |
324 | int acpi_processor_resume(struct acpi_device * device); | |
1da177e4 LT |
325 | |
326 | /* in processor_thermal.c */ | |
4be44fcd | 327 | int acpi_processor_get_limit_info(struct acpi_processor *pr); |
1da177e4 LT |
328 | extern struct file_operations acpi_processor_limit_fops; |
329 | ||
330 | #ifdef CONFIG_CPU_FREQ | |
331 | void acpi_thermal_cpufreq_init(void); | |
332 | void acpi_thermal_cpufreq_exit(void); | |
333 | #else | |
4be44fcd LB |
334 | static inline void acpi_thermal_cpufreq_init(void) |
335 | { | |
336 | return; | |
337 | } | |
338 | static inline void acpi_thermal_cpufreq_exit(void) | |
339 | { | |
340 | return; | |
341 | } | |
1da177e4 LT |
342 | #endif |
343 | ||
1da177e4 | 344 | #endif |