1 files changed, 235 insertions, 0 deletions
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
new file mode 100644
index 000000000000..2f50a5bb0c78
--- /dev/null
+++ b/include/acpi/processor.h
@@ -0,0 +1,235 @@
+#ifndef __ACPI_PROCESSOR_H
+#define __ACPI_PROCESSOR_H
+
+#include <linux/kernel.h>
+#include <linux/config.h>
+
+#define ACPI_PROCESSOR_BUSY_METRIC	10
+
+#define ACPI_PROCESSOR_MAX_POWER	8
+#define ACPI_PROCESSOR_MAX_C2_LATENCY	100
+#define ACPI_PROCESSOR_MAX_C3_LATENCY	1000
+
+#define ACPI_PROCESSOR_MAX_THROTTLING	16
+#define ACPI_PROCESSOR_MAX_THROTTLE	250	/* 25% */
+#define ACPI_PROCESSOR_MAX_DUTY_WIDTH	4
+
+/* 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;
+	struct acpi_processor_cx *state;
+	struct {
+		u32			time;
+		u32			ticks;
+		u32			count;
+		u32			bm;
+	}			threshold;
+};
+
+struct acpi_processor_cx {
+	u8			valid;
+	u8			type;
+	u32			address;
+	u32			latency;
+	u32			latency_ticks;
+	u32			power;
+	u32			usage;
+	struct acpi_processor_cx_policy promotion;
+	struct acpi_processor_cx_policy demotion;
+};
+
+struct acpi_processor_power {
+	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_pct_register {
+	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 */
+};
+
+#define ACPI_PDC_REVISION_ID                   0x1
+
+struct acpi_processor_performance {
+	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_px *states;
+
+	/* the _PDC objects passed by the driver, if any */
+	struct acpi_object_list *pdc;
+};
+
+
+
+/* Throttling Control */
+
+struct acpi_processor_tx {
+	u16			power;
+	u16			performance;
+};
+
+struct acpi_processor_throttling {
+	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 */
+};
+
+struct acpi_processor_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_flags {
+	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;
+	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;
+};
+
+struct acpi_processor_errata {
+	u8			smp;
+	struct {
+		u8			throttle:1;
+		u8			fdma:1;
+		u8			reserved:6;
+		u32			bmisx;
+	}			piix4;
+};
+
+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;
+
+/* 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);
+ssize_t acpi_processor_write_throttling (
+        struct file		*file,
+        const char		__user *buffer,
+        size_t			count,
+        loff_t			*data);
+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);
+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;
+
+#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