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ACPI: add ACPI 3.0 _TPC _TSS _PTC throttling support

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adds _TPC _TSS _PTC -- Throttling Present Capabilities

Signed-off-by: Luming Yu <luming.yu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Luming Yu
2007-05-26 22:49:58 +08:00
committed by Len Brown
parent f285e3d329
commit 01854e697a
3 changed files with 423 additions and 9 deletions
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46
include/acpi/processor.h
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@@ -21,6 +21,8 @@
#define ACPI_PSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
#define ACPI_PSD_REV0_ENTRIES 5
#define ACPI_TSD_REV0_REVISION 0 /* Support for _PSD as in ACPI 3.0 */
#define ACPI_TSD_REV0_ENTRIES 5
/*
* Types of coordination defined in ACPI 3.0. Same macros can be used across
* P, C and T states
@@ -125,17 +127,52 @@ struct acpi_processor_performance {
/* Throttling Control */
struct acpi_tsd_package {
acpi_integer num_entries;
acpi_integer revision;
acpi_integer domain;
acpi_integer coord_type;
acpi_integer num_processors;
} __attribute__ ((packed));
struct acpi_ptc_register {
u8 descriptor;
u16 length;
u8 space_id;
u8 bit_width;
u8 bit_offset;
u8 reserved;
u64 address;
} __attribute__ ((packed));
struct acpi_processor_tx_tss {
acpi_integer freqpercentage; /* */
acpi_integer power; /* milliWatts */
acpi_integer transition_latency; /* microseconds */
acpi_integer control; /* control value */
acpi_integer status; /* success indicator */
};
struct acpi_processor_tx {
u16 power;
u16 performance;
};
struct acpi_processor;
struct acpi_processor_throttling {
int state;
unsigned int state;
unsigned int platform_limit;
struct acpi_pct_register control_register;
struct acpi_pct_register status_register;
unsigned int state_count;
struct acpi_processor_tx_tss *states_tss;
struct acpi_tsd_package domain_info;
cpumask_t shared_cpu_map;
int (*acpi_processor_get_throttling) (struct acpi_processor *pr);
int (*acpi_processor_set_throttling) (struct acpi_processor *pr, int state);
u32 address;
u8 duty_offset;
u8 duty_width;
int state_count;
struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
};
@@ -169,6 +206,9 @@ struct acpi_processor {
u32 id;
u32 pblk;
int performance_platform_limit;
int throttling_platform_limit;
/*0 - states 0..n-th satte available*/
struct acpi_processor_flags flags;
struct acpi_processor_power power;
struct acpi_processor_performance *performance;
@@ -270,7 +310,7 @@ static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
/* in processor_throttling.c */
int acpi_processor_get_throttling_info(struct acpi_processor *pr);
int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
extern int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
extern struct file_operations acpi_processor_throttling_fops;
/* in processor_idle.c */