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authorLuming Yu2007-05-26 16:49:58 +0200
committerLen Brown2007-06-02 06:07:47 +0200
commit01854e697a77a434104b2f7e6d7fd463a978af32 (patch)
tree5882fceb379dacfc9e9f784d8c265a3be46b513e /include/acpi
parentMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/iee... (diff)
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ACPI: add ACPI 3.0 _TPC _TSS _PTC throttling support
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>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/processor.h46
1 files changed, 43 insertions, 3 deletions
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index b4b0ffdab098..01d2f24c224f 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -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 */