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>

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 */