ACPI: register ACPI Processor as generic thermal cooling device
[linux-2.6.git] / include / acpi / processor.h
index 82a9b7d..0787635 100644 (file)
@@ -2,8 +2,9 @@
 #define __ACPI_PROCESSOR_H
 
 #include <linux/kernel.h>
-#include <linux/config.h>
-
+#include <linux/cpu.h>
+#include <linux/cpuidle.h>
+#include <linux/thermal.h>
 #include <asm/acpi.h>
 
 #define ACPI_PROCESSOR_BUSY_METRIC     10
 
 #define ACPI_PDC_REVISION_ID           0x1
 
+#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
+ */
+#define DOMAIN_COORD_TYPE_SW_ALL       0xfc
+#define DOMAIN_COORD_TYPE_SW_ANY       0xfd
+#define DOMAIN_COORD_TYPE_HW_ALL       0xfe
+
+#define ACPI_CSTATE_SYSTEMIO   (0)
+#define ACPI_CSTATE_FFH                (1)
+
 /* Power Management */
 
 struct acpi_processor_cx;
@@ -47,25 +64,38 @@ struct acpi_processor_cx {
        u8 valid;
        u8 type;
        u32 address;
+       u8 space_id;
+       u8 index;
        u32 latency;
        u32 latency_ticks;
        u32 power;
        u32 usage;
+       u64 time;
        struct acpi_processor_cx_policy promotion;
        struct acpi_processor_cx_policy demotion;
 };
 
 struct acpi_processor_power {
+       struct cpuidle_device dev;
        struct acpi_processor_cx *state;
        unsigned long bm_check_timestamp;
        u32 default_state;
        u32 bm_activity;
        int count;
        struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
+       int timer_broadcast_on_state;
 };
 
 /* Performance Management */
 
+struct acpi_psd_package {
+       acpi_integer num_entries;
+       acpi_integer revision;
+       acpi_integer domain;
+       acpi_integer coord_type;
+       acpi_integer num_processors;
+} __attribute__ ((packed));
+
 struct acpi_pct_register {
        u8 descriptor;
        u16 length;
@@ -92,22 +122,60 @@ struct acpi_processor_performance {
        struct acpi_pct_register status_register;
        unsigned int state_count;
        struct acpi_processor_px *states;
-
+       struct acpi_psd_package domain_info;
+       cpumask_t shared_cpu_map;
+       unsigned int shared_type;
 };
 
 /* 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];
 };
 
@@ -133,6 +201,7 @@ struct acpi_processor_flags {
        u8 bm_check:1;
        u8 has_cst:1;
        u8 power_setup_done:1;
+       u8 bm_rld_set:1;
 };
 
 struct acpi_processor {
@@ -141,12 +210,15 @@ struct acpi_processor {
        u32 id;
        u32 pblk;
        int performance_platform_limit;
+       int throttling_platform_limit;
+       /* 0 - states 0..n-th state available */
+
        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;
-
+       struct thermal_cooling_device *cdev;
        /* the _PDC objects for this processor, if any */
        struct acpi_object_list *pdc;
 };
@@ -161,6 +233,10 @@ struct acpi_processor_errata {
        } piix4;
 };
 
+extern int acpi_processor_preregister_performance(struct
+                                                 acpi_processor_performance
+                                                 *performance);
+
 extern int acpi_processor_register_performance(struct acpi_processor_performance
                                               *performance, unsigned int cpu);
 extern void acpi_processor_unregister_performance(struct
@@ -181,6 +257,10 @@ void arch_acpi_processor_init_pdc(struct acpi_processor *pr);
 #ifdef ARCH_HAS_POWER_INIT
 void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
                                        unsigned int cpu);
+int acpi_processor_ffh_cstate_probe(unsigned int cpu,
+                                   struct acpi_processor_cx *cx,
+                                   struct acpi_power_register *reg);
+void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cstate);
 #else
 static inline void acpi_processor_power_init_bm_check(struct
                                                      acpi_processor_flags
@@ -189,6 +269,18 @@ static inline void acpi_processor_power_init_bm_check(struct
        flags->bm_check = 1;
        return;
 }
+static inline int acpi_processor_ffh_cstate_probe(unsigned int cpu,
+                                                 struct acpi_processor_cx *cx,
+                                                 struct acpi_power_register
+                                                 *reg)
+{
+       return -1;
+}
+static inline void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx
+                                                  *cstate)
+{
+       return;
+}
 #endif
 
 /* in processor_perflib.c */
@@ -222,10 +314,7 @@ 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);
-ssize_t acpi_processor_write_throttling(struct file *file,
-                                       const char __user * buffer,
-                                       size_t count, loff_t * data);
+extern int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
 extern struct file_operations acpi_processor_throttling_fops;
 
 /* in processor_idle.c */
@@ -234,14 +323,14 @@ int acpi_processor_power_init(struct acpi_processor *pr,
 int acpi_processor_cst_has_changed(struct acpi_processor *pr);
 int acpi_processor_power_exit(struct acpi_processor *pr,
                              struct acpi_device *device);
+int acpi_processor_suspend(struct acpi_device * device, pm_message_t state);
+int acpi_processor_resume(struct acpi_device * device);
+extern struct cpuidle_driver acpi_idle_driver;
 
 /* in processor_thermal.c */
 int acpi_processor_get_limit_info(struct acpi_processor *pr);
-ssize_t acpi_processor_write_limit(struct file *file,
-                                  const char __user * buffer,
-                                  size_t count, loff_t * data);
 extern struct file_operations acpi_processor_limit_fops;
-
+extern struct thermal_cooling_device_ops processor_cooling_ops;
 #ifdef CONFIG_CPU_FREQ
 void acpi_thermal_cpufreq_init(void);
 void acpi_thermal_cpufreq_exit(void);