1 #ifndef __ACPI_PROCESSOR_H
2 #define __ACPI_PROCESSOR_H
4 #include <linux/kernel.h>
5 #include <linux/config.h>
10 #define ACPI_PROCESSOR_BUSY_METRIC 10
12 #define ACPI_PROCESSOR_MAX_POWER 8
13 #define ACPI_PROCESSOR_MAX_C2_LATENCY 100
14 #define ACPI_PROCESSOR_MAX_C3_LATENCY 1000
16 #define ACPI_PROCESSOR_MAX_THROTTLING 16
17 #define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
18 #define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
20 #define ACPI_PDC_REVISION_ID 0x1
22 #define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
23 #define ACPI_PSD_REV0_ENTRIES 5
26 * Types of coordination defined in ACPI 3.0. Same macros can be used across
29 #define DOMAIN_COORD_TYPE_SW_ALL 0xfc
30 #define DOMAIN_COORD_TYPE_SW_ANY 0xfd
31 #define DOMAIN_COORD_TYPE_HW_ALL 0xfe
33 /* Power Management */
35 struct acpi_processor_cx;
37 struct acpi_power_register {
45 } __attribute__ ((packed));
47 struct acpi_processor_cx_policy {
49 struct acpi_processor_cx *state;
58 struct acpi_processor_cx {
67 struct acpi_processor_cx_policy promotion;
68 struct acpi_processor_cx_policy demotion;
71 struct acpi_processor_power {
72 struct acpi_processor_cx *state;
73 unsigned long bm_check_timestamp;
77 struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
80 /* Performance Management */
82 struct acpi_psd_package {
83 acpi_integer num_entries;
84 acpi_integer revision;
86 acpi_integer coord_type;
87 acpi_integer num_processors;
88 } __attribute__ ((packed));
90 struct acpi_pct_register {
98 } __attribute__ ((packed));
100 struct acpi_processor_px {
101 acpi_integer core_frequency; /* megahertz */
102 acpi_integer power; /* milliWatts */
103 acpi_integer transition_latency; /* microseconds */
104 acpi_integer bus_master_latency; /* microseconds */
105 acpi_integer control; /* control value */
106 acpi_integer status; /* success indicator */
109 struct acpi_processor_performance {
111 unsigned int platform_limit;
112 struct acpi_pct_register control_register;
113 struct acpi_pct_register status_register;
114 unsigned int state_count;
115 struct acpi_processor_px *states;
116 struct acpi_psd_package domain_info;
117 cpumask_t shared_cpu_map;
118 unsigned int shared_type;
121 /* Throttling Control */
123 struct acpi_processor_tx {
128 struct acpi_processor_throttling {
134 struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
137 /* Limit Interface */
139 struct acpi_processor_lx {
140 int px; /* performace state */
141 int tx; /* throttle level */
144 struct acpi_processor_limit {
145 struct acpi_processor_lx state; /* current limit */
146 struct acpi_processor_lx thermal; /* thermal limit */
147 struct acpi_processor_lx user; /* user limit */
150 struct acpi_processor_flags {
158 u8 power_setup_done:1;
161 struct acpi_processor {
166 int performance_platform_limit;
167 struct acpi_processor_flags flags;
168 struct acpi_processor_power power;
169 struct acpi_processor_performance *performance;
170 struct acpi_processor_throttling throttling;
171 struct acpi_processor_limit limit;
173 /* the _PDC objects for this processor, if any */
174 struct acpi_object_list *pdc;
177 struct acpi_processor_errata {
187 extern int acpi_processor_preregister_performance(
188 struct acpi_processor_performance **performance);
190 extern int acpi_processor_register_performance(struct acpi_processor_performance
191 *performance, unsigned int cpu);
192 extern void acpi_processor_unregister_performance(struct
193 acpi_processor_performance
197 /* note: this locks both the calling module and the processor module
198 if a _PPC object exists, rmmod is disallowed then */
199 int acpi_processor_notify_smm(struct module *calling_module);
201 /* for communication between multiple parts of the processor kernel module */
202 extern struct acpi_processor *processors[NR_CPUS];
203 extern struct acpi_processor_errata errata;
205 void arch_acpi_processor_init_pdc(struct acpi_processor *pr);
207 #ifdef ARCH_HAS_POWER_INIT
208 void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
211 static inline void acpi_processor_power_init_bm_check(struct
213 *flags, unsigned int cpu)
220 /* in processor_perflib.c */
222 #ifdef CONFIG_CPU_FREQ
223 void acpi_processor_ppc_init(void);
224 void acpi_processor_ppc_exit(void);
225 int acpi_processor_ppc_has_changed(struct acpi_processor *pr);
227 static inline void acpi_processor_ppc_init(void)
231 static inline void acpi_processor_ppc_exit(void)
235 static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
237 static unsigned int printout = 1;
240 "Warning: Processor Platform Limit event detected, but not handled.\n");
242 "Consider compiling CPUfreq support into your kernel.\n");
247 #endif /* CONFIG_CPU_FREQ */
249 /* in processor_throttling.c */
250 int acpi_processor_get_throttling_info(struct acpi_processor *pr);
251 int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
252 extern struct file_operations acpi_processor_throttling_fops;
254 /* in processor_idle.c */
255 int acpi_processor_power_init(struct acpi_processor *pr,
256 struct acpi_device *device);
257 int acpi_processor_cst_has_changed(struct acpi_processor *pr);
258 int acpi_processor_power_exit(struct acpi_processor *pr,
259 struct acpi_device *device);
261 /* in processor_thermal.c */
262 int acpi_processor_get_limit_info(struct acpi_processor *pr);
263 extern struct file_operations acpi_processor_limit_fops;
265 #ifdef CONFIG_CPU_FREQ
266 void acpi_thermal_cpufreq_init(void);
267 void acpi_thermal_cpufreq_exit(void);
269 static inline void acpi_thermal_cpufreq_init(void)
273 static inline void acpi_thermal_cpufreq_exit(void)