148 lines
3.3 KiB
C
148 lines
3.3 KiB
C
#ifndef __ACPI_PROCESSOR_H
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#define __ACPI_PROCESSOR_H
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#include <linux/kernel.h>
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#define ACPI_PROCESSOR_BUSY_METRIC 10
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#define ACPI_PROCESSOR_MAX_POWER ACPI_C_STATE_COUNT
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#define ACPI_PROCESSOR_MAX_C2_LATENCY 100
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#define ACPI_PROCESSOR_MAX_C3_LATENCY 1000
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#define ACPI_PROCESSOR_MAX_THROTTLING 16
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#define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
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#define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
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/* Power Management */
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struct acpi_processor_cx_policy {
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u32 count;
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u32 state;
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struct {
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u32 time;
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u32 ticks;
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u32 count;
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u32 bm;
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} threshold;
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};
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struct acpi_processor_cx {
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u8 valid;
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u32 address;
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u32 latency;
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u32 latency_ticks;
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u32 power;
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u32 usage;
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struct acpi_processor_cx_policy promotion;
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struct acpi_processor_cx_policy demotion;
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};
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struct acpi_processor_power {
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u32 state;
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u32 default_state;
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u32 bm_activity;
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struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
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};
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/* Performance Management */
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struct acpi_pct_register {
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u8 descriptor;
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u16 length;
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u8 space_id;
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u8 bit_width;
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u8 bit_offset;
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u8 reserved;
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u64 address;
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} __attribute__ ((packed));
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struct acpi_processor_px {
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acpi_integer core_frequency; /* megahertz */
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acpi_integer power; /* milliWatts */
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acpi_integer transition_latency; /* microseconds */
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acpi_integer bus_master_latency; /* microseconds */
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acpi_integer control; /* control value */
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acpi_integer status; /* success indicator */
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};
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#define ACPI_PDC_REVISION_ID 0x1
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struct acpi_processor_performance {
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unsigned int state;
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unsigned int platform_limit;
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struct acpi_pct_register control_register;
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struct acpi_pct_register status_register;
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unsigned int state_count;
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struct acpi_processor_px *states;
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/* the _PDC objects passed by the driver, if any */
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struct acpi_object_list *pdc;
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};
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/* Throttling Control */
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struct acpi_processor_tx {
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u16 power;
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u16 performance;
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};
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struct acpi_processor_throttling {
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int state;
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u32 address;
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u8 duty_offset;
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u8 duty_width;
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int state_count;
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struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
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};
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/* Limit Interface */
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struct acpi_processor_lx {
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int px; /* performace state */
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int tx; /* throttle level */
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};
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struct acpi_processor_limit {
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struct acpi_processor_lx state; /* current limit */
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struct acpi_processor_lx thermal; /* thermal limit */
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struct acpi_processor_lx user; /* user limit */
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};
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struct acpi_processor_flags {
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u8 power:1;
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u8 performance:1;
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u8 throttling:1;
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u8 limit:1;
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u8 bm_control:1;
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u8 bm_check:1;
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u8 reserved:2;
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};
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struct acpi_processor {
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acpi_handle handle;
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u32 acpi_id;
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u32 id;
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int performance_platform_limit;
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struct acpi_processor_flags flags;
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struct acpi_processor_power power;
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struct acpi_processor_performance *performance;
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struct acpi_processor_throttling throttling;
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struct acpi_processor_limit limit;
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};
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extern int acpi_processor_register_performance (
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struct acpi_processor_performance * performance,
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unsigned int cpu);
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extern void acpi_processor_unregister_performance (
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struct acpi_processor_performance * performance,
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unsigned int cpu);
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/* note: this locks both the calling module and the processor module
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if a _PPC object exists, rmmod is disallowed then */
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int acpi_processor_notify_smm(struct module *calling_module);
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#endif
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