#define __ACPI_PROCESSOR_H
#include <linux/kernel.h>
+#include <linux/cpu.h>
+
+#include <asm/acpi.h>
#define ACPI_PROCESSOR_BUSY_METRIC 10
-#define ACPI_PROCESSOR_MAX_POWER ACPI_C_STATE_COUNT
+#define ACPI_PROCESSOR_MAX_POWER 8
#define ACPI_PROCESSOR_MAX_C2_LATENCY 100
#define ACPI_PROCESSOR_MAX_C3_LATENCY 1000
#define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
#define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
+#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
+
+/*
+ * 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;
+
+struct acpi_power_register {
+ u8 descriptor;
+ u16 length;
+ u8 space_id;
+ u8 bit_width;
+ u8 bit_offset;
+ u8 reserved;
+ u64 address;
+} __attribute__ ((packed));
+
struct acpi_processor_cx_policy {
- u32 count;
- int state;
+ u32 count;
+ struct acpi_processor_cx *state;
struct {
- u32 time;
- u32 ticks;
- u32 count;
- u32 bm;
- } threshold;
+ u32 time;
+ u32 ticks;
+ u32 count;
+ u32 bm;
+ } threshold;
};
struct acpi_processor_cx {
- u8 valid;
- u32 address;
- u32 latency;
- u32 latency_ticks;
- u32 power;
- u32 usage;
+ 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 {
- int state;
- int default_state;
- u32 bm_activity;
+ 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];
};
/* 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;
- u8 space_id;
- u8 bit_width;
- u8 bit_offset;
- u8 reserved;
- u64 address;
+ u8 descriptor;
+ u16 length;
+ u8 space_id;
+ u8 bit_width;
+ u8 bit_offset;
+ u8 reserved;
+ u64 address;
} __attribute__ ((packed));
struct acpi_processor_px {
- acpi_integer core_frequency; /* megahertz */
- acpi_integer power; /* milliWatts */
- acpi_integer transition_latency; /* microseconds */
- acpi_integer bus_master_latency; /* microseconds */
- acpi_integer control; /* control value */
- acpi_integer status; /* success indicator */
+ acpi_integer core_frequency; /* megahertz */
+ acpi_integer power; /* milliWatts */
+ acpi_integer transition_latency; /* microseconds */
+ acpi_integer bus_master_latency; /* microseconds */
+ acpi_integer control; /* control value */
+ acpi_integer status; /* success indicator */
};
-#define ACPI_PDC_REVISION_ID 0x1
-
struct acpi_processor_performance {
- unsigned int state;
- unsigned int platform_limit;
+ unsigned int state;
+ unsigned int platform_limit;
struct acpi_pct_register control_register;
struct acpi_pct_register status_register;
- unsigned int state_count;
+ unsigned int state_count;
struct acpi_processor_px *states;
-
- /* the _PDC objects passed by the driver, if any */
- struct acpi_object_list *pdc;
+ struct acpi_psd_package domain_info;
+ cpumask_t shared_cpu_map;
+ unsigned int shared_type;
};
-
-
/* Throttling Control */
struct acpi_processor_tx {
- u16 power;
- u16 performance;
+ u16 power;
+ u16 performance;
};
struct acpi_processor_throttling {
- int state;
- u32 address;
- u8 duty_offset;
- u8 duty_width;
- int state_count;
+ int state;
+ u32 address;
+ u8 duty_offset;
+ u8 duty_width;
+ int state_count;
struct acpi_processor_tx states[ACPI_PROCESSOR_MAX_THROTTLING];
};
/* Limit Interface */
struct acpi_processor_lx {
- int px; /* performace state */
- int tx; /* throttle level */
+ int px; /* performace state */
+ int tx; /* throttle level */
};
struct acpi_processor_limit {
- struct acpi_processor_lx state; /* current limit */
+ struct acpi_processor_lx state; /* current limit */
struct acpi_processor_lx thermal; /* thermal limit */
- struct acpi_processor_lx user; /* user limit */
+ struct acpi_processor_lx user; /* user limit */
};
-
struct acpi_processor_flags {
- u8 power:1;
- u8 performance:1;
- u8 throttling:1;
- u8 limit:1;
- u8 bm_control:1;
- u8 bm_check:1;
- u8 reserved:2;
+ u8 power:1;
+ u8 performance:1;
+ u8 throttling:1;
+ u8 limit:1;
+ u8 bm_control:1;
+ u8 bm_check:1;
+ u8 has_cst:1;
+ u8 power_setup_done:1;
};
struct acpi_processor {
- acpi_handle handle;
- u32 acpi_id;
- u32 id;
- int performance_platform_limit;
+ acpi_handle handle;
+ u32 acpi_id;
+ u32 id;
+ u32 pblk;
+ int performance_platform_limit;
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;
+
+ /* the _PDC objects for this processor, if any */
+ struct acpi_object_list *pdc;
};
-extern int acpi_processor_register_performance (
- struct acpi_processor_performance * performance,
- unsigned int cpu);
-extern void acpi_processor_unregister_performance (
- struct acpi_processor_performance * performance,
- unsigned int cpu);
+struct acpi_processor_errata {
+ u8 smp;
+ struct {
+ u8 throttle:1;
+ u8 fdma:1;
+ u8 reserved:6;
+ u32 bmisx;
+ } 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
+ acpi_processor_performance
+ *performance,
+ unsigned int cpu);
+
+/* note: this locks both the calling module and the processor module
+ if a _PPC object exists, rmmod is disallowed then */
+int acpi_processor_notify_smm(struct module *calling_module);
+
+/* for communication between multiple parts of the processor kernel module */
+extern struct acpi_processor *processors[NR_CPUS];
+extern struct acpi_processor_errata errata;
+
+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
+ *flags, unsigned int cpu)
+{
+ 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 */
+
+#ifdef CONFIG_CPU_FREQ
+void acpi_processor_ppc_init(void);
+void acpi_processor_ppc_exit(void);
+int acpi_processor_ppc_has_changed(struct acpi_processor *pr);
+#else
+static inline void acpi_processor_ppc_init(void)
+{
+ return;
+}
+static inline void acpi_processor_ppc_exit(void)
+{
+ return;
+}
+static inline int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
+{
+ static unsigned int printout = 1;
+ if (printout) {
+ printk(KERN_WARNING
+ "Warning: Processor Platform Limit event detected, but not handled.\n");
+ printk(KERN_WARNING
+ "Consider compiling CPUfreq support into your kernel.\n");
+ printout = 0;
+ }
+ return 0;
+}
+#endif /* CONFIG_CPU_FREQ */
+
+/* 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 struct file_operations acpi_processor_throttling_fops;
+
+/* in processor_idle.c */
+int acpi_processor_power_init(struct acpi_processor *pr,
+ struct acpi_device *device);
+int acpi_processor_cst_has_changed(struct acpi_processor *pr);
+int acpi_processor_power_exit(struct acpi_processor *pr,
+ struct acpi_device *device);
+
+/* in processor_thermal.c */
+int acpi_processor_get_limit_info(struct acpi_processor *pr);
+extern struct file_operations acpi_processor_limit_fops;
+
+#ifdef CONFIG_CPU_FREQ
+void acpi_thermal_cpufreq_init(void);
+void acpi_thermal_cpufreq_exit(void);
+#else
+static inline void acpi_thermal_cpufreq_init(void)
+{
+ return;
+}
+static inline void acpi_thermal_cpufreq_exit(void)
+{
+ return;
+}
+#endif
#endif
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