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#ifndef __ACPI_PROCESSOR_H
#define __ACPI_PROCESSOR_H
#include <linux/kernel.h>
#define ACPI_PROCESSOR_BUSY_METRIC 10
#define ACPI_PROCESSOR_MAX_POWER ACPI_C_STATE_COUNT
#define ACPI_PROCESSOR_MAX_C2_LATENCY 100
#define ACPI_PROCESSOR_MAX_C3_LATENCY 1000
#define ACPI_PROCESSOR_MAX_PERFORMANCE 8
#define ACPI_PROCESSOR_MAX_THROTTLING 16
#define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
#define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
/* Power Management */
struct acpi_processor_cx_policy {
u32 count;
int state;
struct {
u32 time;
u32 ticks;
u32 count;
u32 bm;
} threshold;
};
struct acpi_processor_cx {
u8 valid;
u32 address;
u32 latency;
u32 latency_ticks;
u32 power;
u32 usage;
struct acpi_processor_cx_policy promotion;
struct acpi_processor_cx_policy demotion;
};
struct acpi_processor_power {
int state;
int default_state;
u32 bm_activity;
struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
};
/* Performance Management */
struct acpi_pct_register {
u8 descriptor;
u16 length;
u8 space_id;
u8 bit_width;
u8 bit_offset;
u8 reserved;
u64 address;
} __attribute__ ((packed));
struct acpi_processor_px {
acpi_integer core_frequency; /* megahertz */
acpi_integer power; /* milliWatts */
acpi_integer transition_latency; /* microseconds */
acpi_integer bus_master_latency; /* microseconds */
acpi_integer control; /* control value */
acpi_integer status; /* success indicator */
};
struct acpi_processor_performance {
int state;
int platform_limit;
u16 control_register;
u16 status_register;
int state_count;
struct acpi_processor_px states[ACPI_PROCESSOR_MAX_PERFORMANCE];
struct cpufreq_frequency_table freq_table[ACPI_PROCESSOR_MAX_PERFORMANCE];
struct acpi_processor *pr;
};
/* Throttling Control */
struct acpi_processor_tx {
u16 power;
u16 performance;
};
struct acpi_processor_throttling {
int state;
u32 address;
u8 duty_offset;
u8 duty_width;
int state_count;
struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
};
/* Limit Interface */
struct acpi_processor_lx {
int px; /* performace state */
int tx; /* throttle level */
};
struct acpi_processor_limit {
struct acpi_processor_lx state; /* current limit */
struct acpi_processor_lx thermal; /* thermal limit */
struct acpi_processor_lx user; /* user limit */
};
struct acpi_processor_flags {
u8 power:1;
u8 performance:1;
u8 throttling:1;
u8 limit:1;
u8 bm_control:1;
u8 bm_check:1;
u8 reserved:2;
};
struct acpi_processor {
acpi_handle handle;
u32 acpi_id;
u32 id;
int performance_platform_limit;
struct acpi_processor_flags flags;
struct acpi_processor_power power;
struct acpi_processor_performance *performance;
struct acpi_processor_throttling throttling;
struct acpi_processor_limit limit;
};
extern int acpi_processor_get_platform_limit (
struct acpi_processor* pr);
extern int acpi_processor_register_performance (
struct acpi_processor_performance * performance,
struct acpi_processor ** pr,
unsigned int cpu);
#endif
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