1 #ifndef __ACPI_PROCESSOR_H
2 #define __ACPI_PROCESSOR_H
4 #include <linux/kernel.h>
9 #define ACPI_PROCESSOR_BUSY_METRIC 10
11 #define ACPI_PROCESSOR_MAX_POWER 8
12 #define ACPI_PROCESSOR_MAX_C2_LATENCY 100
13 #define ACPI_PROCESSOR_MAX_C3_LATENCY 1000
15 #define ACPI_PROCESSOR_MAX_THROTTLING 16
16 #define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
17 #define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
19 #define ACPI_PDC_REVISION_ID 0x1
21 #define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
22 #define ACPI_PSD_REV0_ENTRIES 5
24 #define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
25 #define ACPI_TSD_REV0_ENTRIES 5
27 * Types of coordination defined in ACPI 3.0. Same macros can be used across
30 #define DOMAIN_COORD_TYPE_SW_ALL 0xfc
31 #define DOMAIN_COORD_TYPE_SW_ANY 0xfd
32 #define DOMAIN_COORD_TYPE_HW_ALL 0xfe
34 #define ACPI_CSTATE_SYSTEMIO (0)
35 #define ACPI_CSTATE_FFH (1)
37 /* Power Management */
39 struct acpi_processor_cx;
41 struct acpi_power_register {
49 } __attribute__ ((packed));
51 struct acpi_processor_cx_policy {
53 struct acpi_processor_cx *state;
62 struct acpi_processor_cx {
73 struct acpi_processor_cx_policy promotion;
74 struct acpi_processor_cx_policy demotion;
77 struct acpi_processor_power {
78 struct acpi_processor_cx *state;
79 unsigned long bm_check_timestamp;
83 struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
84 int timer_broadcast_on_state;
87 /* Performance Management */
89 struct acpi_psd_package {
90 acpi_integer num_entries;
91 acpi_integer revision;
93 acpi_integer coord_type;
94 acpi_integer num_processors;
95 } __attribute__ ((packed));
97 struct acpi_pct_register {
105 } __attribute__ ((packed));
107 struct acpi_processor_px {
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 */
116 struct acpi_processor_performance {
118 unsigned int platform_limit;
119 struct acpi_pct_register control_register;
120 struct acpi_pct_register status_register;
121 unsigned int state_count;
122 struct acpi_processor_px *states;
123 struct acpi_psd_package domain_info;
124 cpumask_t shared_cpu_map;
125 unsigned int shared_type;
128 /* Throttling Control */
130 struct acpi_tsd_package {
131 acpi_integer num_entries;
132 acpi_integer revision;
134 acpi_integer coord_type;
135 acpi_integer num_processors;
136 } __attribute__ ((packed));
138 struct acpi_ptc_register {
146 } __attribute__ ((packed));
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 */
155 struct acpi_processor_tx {
160 struct acpi_processor;
161 struct acpi_processor_throttling {
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;
170 int (*acpi_processor_get_throttling) (struct acpi_processor *pr);
171 int (*acpi_processor_set_throttling) (struct acpi_processor *pr, int state);
176 struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
179 /* Limit Interface */
181 struct acpi_processor_lx {
182 int px; /* performace state */
183 int tx; /* throttle level */
186 struct acpi_processor_limit {
187 struct acpi_processor_lx state; /* current limit */
188 struct acpi_processor_lx thermal; /* thermal limit */
189 struct acpi_processor_lx user; /* user limit */
192 struct acpi_processor_flags {
200 u8 power_setup_done:1;
203 struct acpi_processor {
208 int performance_platform_limit;
209 int throttling_platform_limit;
210 /*0 - states 0..n-th satte available*/
212 struct acpi_processor_flags flags;
213 struct acpi_processor_power power;
214 struct acpi_processor_performance *performance;
215 struct acpi_processor_throttling throttling;
216 struct acpi_processor_limit limit;
218 /* the _PDC objects for this processor, if any */
219 struct acpi_object_list *pdc;
222 struct acpi_processor_errata {
232 extern int acpi_processor_preregister_performance(struct
233 acpi_processor_performance
236 extern int acpi_processor_register_performance(struct acpi_processor_performance
237 *performance, unsigned int cpu);
238 extern void acpi_processor_unregister_performance(struct
239 acpi_processor_performance
243 /* note: this locks both the calling module and the processor module
244 if a _PPC object exists, rmmod is disallowed then */
245 int acpi_processor_notify_smm(struct module *calling_module);
247 /* for communication between multiple parts of the processor kernel module */
248 extern struct acpi_processor *processors[NR_CPUS];
249 extern struct acpi_processor_errata errata;
251 void arch_acpi_processor_init_pdc(struct acpi_processor *pr);
253 #ifdef ARCH_HAS_POWER_INIT
254 void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
256 int acpi_processor_ffh_cstate_probe(unsigned int cpu,
257 struct acpi_processor_cx *cx,
258 struct acpi_power_register *reg);
259 void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
261 static inline void acpi_processor_power_init_bm_check(struct
263 *flags, unsigned int cpu)
268 static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
269 struct acpi_processor_cx *cx,
270 struct acpi_power_register
275 static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
282 /* in processor_perflib.c */
284 #ifdef CONFIG_CPU_FREQ
285 void acpi_processor_ppc_init(void);
286 void acpi_processor_ppc_exit(void);
287 int acpi_processor_ppc_has_changed(struct acpi_processor *pr);
289 static inline void acpi_processor_ppc_init(void)
293 static inline void acpi_processor_ppc_exit(void)
297 static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
299 static unsigned int printout = 1;
302 "Warning: Processor Platform Limit event detected, but not handled.\n");
304 "Consider compiling CPUfreq support into your kernel.\n");
309 #endif /* CONFIG_CPU_FREQ */
311 /* in processor_throttling.c */
312 int acpi_processor_get_throttling_info(struct acpi_processor *pr);
313 extern int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
314 extern struct file_operations acpi_processor_throttling_fops;
316 /* in processor_idle.c */
317 int acpi_processor_power_init(struct acpi_processor *pr,
318 struct acpi_device *device);
319 int acpi_processor_cst_has_changed(struct acpi_processor *pr);
320 int acpi_processor_power_exit(struct acpi_processor *pr,
321 struct acpi_device *device);
323 /* in processor_thermal.c */
324 int acpi_processor_get_limit_info(struct acpi_processor *pr);
325 extern struct file_operations acpi_processor_limit_fops;
327 #ifdef CONFIG_CPU_FREQ
328 void acpi_thermal_cpufreq_init(void);
329 void acpi_thermal_cpufreq_exit(void);
331 static inline void acpi_thermal_cpufreq_init(void)
335 static inline void acpi_thermal_cpufreq_exit(void)