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/*

 *  acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)

 *

 *  Copyright (C) 2001, 2002 Andy Grover 

 *  Copyright (C) 2001, 2002 Paul Diefenbaugh 

 *

 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or (at

 *  your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful, but

 *  WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 *  General Public License for more details.

 *

 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 */

#ifndef __ACPI_BUS_H__

#define __ACPI_BUS_H__

#include 

#include 

/* TBD: Make dynamic */

#define ACPI_MAX_HANDLES	10

struct acpi_handle_list {

	u32 count;

	acpi_handle handles[ACPI_MAX_HANDLES];

};

/* acpi_utils.h */

acpi_status

acpi_extract_package(union acpi_object *package,

		     struct acpi_buffer *format, struct acpi_buffer *buffer);

acpi_status

acpi_evaluate_integer(acpi_handle handle,

		      acpi_string pathname,

		      struct acpi_object_list *arguments, unsigned long long *data);

acpi_status

acpi_evaluate_reference(acpi_handle handle,

			acpi_string pathname,

			struct acpi_object_list *arguments,

			struct acpi_handle_list *list);

acpi_status

acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,

		  struct acpi_buffer *status_buf);

acpi_status

acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);

bool acpi_has_method(acpi_handle handle, char *name);

acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,

				       u64 arg);

acpi_status acpi_evaluate_ej0(acpi_handle handle);

acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);

bool acpi_ata_match(acpi_handle handle);

bool acpi_bay_match(acpi_handle handle);

bool acpi_dock_match(acpi_handle handle);

bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, int rev, u64 funcs);

union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid,

			int rev, int func, union acpi_object *argv4);

static inline union acpi_object *

acpi_evaluate_dsm_typed(acpi_handle handle, const u8 *uuid, int rev, int func,

			union acpi_object *argv4, acpi_object_type type)

{

	union acpi_object *obj;

	obj = acpi_evaluate_dsm(handle, uuid, rev, func, argv4);

	if (obj && obj->type != type) {

		ACPI_FREE(obj);

		obj = NULL;

	}

	return obj;

}

#define	ACPI_INIT_DSM_ARGV4(cnt, eles)			\

	{						\

	  .package.type = ACPI_TYPE_PACKAGE,		\

	  .package.count = (cnt),			\

	  .package.elements = (eles)			\

	}

bool acpi_dev_present(const char *hid);

#ifdef CONFIG_ACPI

#define ACPI_BUS_FILE_ROOT	"acpi"

enum acpi_bus_device_type {

	ACPI_BUS_TYPE_DEVICE = 0,

	ACPI_BUS_TYPE_POWER,

	ACPI_BUS_TYPE_PROCESSOR,

	ACPI_BUS_TYPE_THERMAL,

	ACPI_BUS_TYPE_POWER_BUTTON,

	ACPI_BUS_TYPE_SLEEP_BUTTON,

	ACPI_BUS_DEVICE_TYPE_COUNT

};

struct acpi_driver;

struct acpi_device;

/*

 * ACPI Scan Handler

 * -----------------

 */

struct acpi_hotplug_profile {

	struct kobject kobj;

	int (*scan_dependent)(struct acpi_device *adev);

	void (*notify_online)(struct acpi_device *adev);

	bool enabled:1;

	bool demand_offline:1;

};

static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(

						struct kobject *kobj)

{

	return container_of(kobj, struct acpi_hotplug_profile, kobj);

}

struct acpi_scan_handler {

	const struct acpi_device_id *ids;

	struct list_head list_node;

	bool (*match)(const char *idstr, const struct acpi_device_id **matchid);

	int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);

	void (*detach)(struct acpi_device *dev);

	void (*bind)(struct device *phys_dev);

	void (*unbind)(struct device *phys_dev);

	struct acpi_hotplug_profile hotplug;

};

/*

 * ACPI Hotplug Context

 * --------------------

 */

struct acpi_hotplug_context {

	struct acpi_device *self;

	int (*notify)(struct acpi_device *, u32);

	void (*uevent)(struct acpi_device *, u32);

	void (*fixup)(struct acpi_device *);

};

/*

 * ACPI Driver

 * -----------

 */

typedef int (*acpi_op_add) (struct acpi_device * device);

typedef int (*acpi_op_remove) (struct acpi_device * device);

typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);

struct acpi_device_ops {

	acpi_op_add add;

	acpi_op_remove remove;

	acpi_op_notify notify;

};

#define ACPI_DRIVER_ALL_NOTIFY_EVENTS	0x1	/* system AND device events */

struct acpi_driver {

	char name[80];

	char class[80];

	const struct acpi_device_id *ids; /* Supported Hardware IDs */

	unsigned int flags;

	struct acpi_device_ops ops;

	struct device_driver drv;

	struct module *owner;

};

/*

 * ACPI Device

 * -----------

 */

/* Status (_STA) */

struct acpi_device_status {

	u32 present:1;

	u32 enabled:1;

	u32 show_in_ui:1;

	u32 functional:1;

	u32 battery_present:1;

	u32 reserved:27;

};

/* Flags */

struct acpi_device_flags {

	u32 dynamic_status:1;

	u32 removable:1;

	u32 ejectable:1;

	u32 power_manageable:1;

	u32 match_driver:1;

	u32 initialized:1;

	u32 visited:1;

	u32 hotplug_notify:1;

	u32 is_dock_station:1;

	u32 of_compatible_ok:1;

	u32 coherent_dma:1;

	u32 cca_seen:1;

	u32 reserved:20;

};

/* File System */

struct acpi_device_dir {

	struct proc_dir_entry *entry;

};

#define acpi_device_dir(d)	((d)->dir.entry)

/* Plug and Play */

typedef char acpi_bus_id[8];

typedef unsigned long acpi_bus_address;

typedef char acpi_device_name[40];

typedef char acpi_device_class[20];

struct acpi_hardware_id {

	struct list_head list;

	const char *id;

};

struct acpi_pnp_type {

	u32 hardware_id:1;

	u32 bus_address:1;

	u32 platform_id:1;

	u32 reserved:29;

};

struct acpi_device_pnp {

	acpi_bus_id bus_id;		/* Object name */

	struct acpi_pnp_type type;	/* ID type */

	acpi_bus_address bus_address;	/* _ADR */

	char *unique_id;		/* _UID */

	struct list_head ids;		/* _HID and _CIDs */

	acpi_device_name device_name;	/* Driver-determined */

	acpi_device_class device_class;	/*        "          */

	union acpi_object *str_obj;	/* unicode string for _STR method */

};

#define acpi_device_bid(d)	((d)->pnp.bus_id)

#define acpi_device_adr(d)	((d)->pnp.bus_address)

const char *acpi_device_hid(struct acpi_device *device);

#define acpi_device_uid(d)	((d)->pnp.unique_id)

#define acpi_device_name(d)	((d)->pnp.device_name)

#define acpi_device_class(d)	((d)->pnp.device_class)

/* Power Management */

struct acpi_device_power_flags {

	u32 explicit_get:1;	/* _PSC present? */

	u32 power_resources:1;	/* Power resources */

	u32 inrush_current:1;	/* Serialize Dx->D0 */

	u32 power_removed:1;	/* Optimize Dx->D0 */

	u32 ignore_parent:1;	/* Power is independent of parent power state */

	u32 dsw_present:1;	/* _DSW present? */

	u32 reserved:26;

};

struct acpi_device_power_state {

	struct {

		u8 valid:1;

		u8 explicit_set:1;	/* _PSx present? */

		u8 reserved:6;

	} flags;

	int power;		/* % Power (compared to D0) */

	int latency;		/* Dx->D0 time (microseconds) */

	struct list_head resources;	/* Power resources referenced */

};

struct acpi_device_power {

	int state;		/* Current state */

	struct acpi_device_power_flags flags;

	struct acpi_device_power_state states[ACPI_D_STATE_COUNT];	/* Power states (D0-D3Cold) */

};

/* Performance Management */

struct acpi_device_perf_flags {

	u8 reserved:8;

};

struct acpi_device_perf_state {

	struct {

		u8 valid:1;

		u8 reserved:7;

	} flags;

	u8 power;		/* % Power (compared to P0) */

	u8 performance;		/* % Performance (    "   ) */

	int latency;		/* Px->P0 time (microseconds) */

};

struct acpi_device_perf {

	int state;

	struct acpi_device_perf_flags flags;

	int state_count;

	struct acpi_device_perf_state *states;

};

/* Wakeup Management */

struct acpi_device_wakeup_flags {

	u8 valid:1;		/* Can successfully enable wakeup? */

	u8 run_wake:1;		/* Run-Wake GPE devices */

	u8 notifier_present:1;  /* Wake-up notify handler has been installed */

	u8 enabled:1;		/* Enabled for wakeup */

};

struct acpi_device_wakeup_context {

	struct work_struct work;

	struct device *dev;

};

struct acpi_device_wakeup {

	acpi_handle gpe_device;

	u64 gpe_number;

	u64 sleep_state;

	struct list_head resources;

	struct acpi_device_wakeup_flags flags;

	struct acpi_device_wakeup_context context;

	struct wakeup_source *ws;

	int prepare_count;

};

struct acpi_device_physical_node {

	unsigned int node_id;

	struct list_head node;

	struct device *dev;

	bool put_online:1;

};

/* ACPI Device Specific Data (_DSD) */

struct acpi_device_data {

	const union acpi_object *pointer;

	const union acpi_object *properties;

	const union acpi_object *of_compatible;

	struct list_head subnodes;

};

struct acpi_gpio_mapping;

/* Device */

struct acpi_device {

	int device_type;

	acpi_handle handle;		/* no handle for fixed hardware */

	struct fwnode_handle fwnode;

	struct acpi_device *parent;

	struct list_head children;

	struct list_head node;

	struct list_head wakeup_list;

	struct list_head del_list;

	struct acpi_device_status status;

	struct acpi_device_flags flags;

	struct acpi_device_pnp pnp;

	struct acpi_device_power power;

	struct acpi_device_wakeup wakeup;

	struct acpi_device_perf performance;

	struct acpi_device_dir dir;

	struct acpi_device_data data;

	struct acpi_scan_handler *handler;

	struct acpi_hotplug_context *hp;

	struct acpi_driver *driver;

	const struct acpi_gpio_mapping *driver_gpios;

	void *driver_data;

	struct device dev;

	unsigned int physical_node_count;

	unsigned int dep_unmet;

	struct list_head physical_node_list;

	struct mutex physical_node_lock;

	void (*remove)(struct acpi_device *);

};

/* Non-device subnode */

struct acpi_data_node {

	const char *name;

	acpi_handle handle;

	struct fwnode_handle fwnode;

	struct acpi_device_data data;

	struct list_head sibling;

	struct kobject kobj;

	struct completion kobj_done;

};

static inline bool is_acpi_node(struct fwnode_handle *fwnode)

{

	return !IS_ERR_OR_NULL(fwnode) && (fwnode->type == FWNODE_ACPI

		|| fwnode->type == FWNODE_ACPI_DATA);

}

static inline bool is_acpi_device_node(struct fwnode_handle *fwnode)

{

	return !IS_ERR_OR_NULL(fwnode) && fwnode->type == FWNODE_ACPI;

}

static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)

{

	return is_acpi_device_node(fwnode) ?

		container_of(fwnode, struct acpi_device, fwnode) : NULL;

}

static inline bool is_acpi_data_node(struct fwnode_handle *fwnode)

{

	return fwnode && fwnode->type == FWNODE_ACPI_DATA;

}

static inline struct acpi_data_node *to_acpi_data_node(struct fwnode_handle *fwnode)

{

	return is_acpi_data_node(fwnode) ?

		container_of(fwnode, struct acpi_data_node, fwnode) : NULL;

}

static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)

{

	return &adev->fwnode;

}

static inline void *acpi_driver_data(struct acpi_device *d)

{

	return d->driver_data;

}

#define to_acpi_device(d)	container_of(d, struct acpi_device, dev)

#define to_acpi_driver(d)	container_of(d, struct acpi_driver, drv)

static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)

{

	*((u32 *)&adev->status) = sta;

}

static inline void acpi_set_hp_context(struct acpi_device *adev,

				       struct acpi_hotplug_context *hp)

{

	hp->self = adev;

	adev->hp = hp;

}

void acpi_initialize_hp_context(struct acpi_device *adev,

				struct acpi_hotplug_context *hp,

				int (*notify)(struct acpi_device *, u32),

				void (*uevent)(struct acpi_device *, u32));

/* acpi_device.dev.bus == &acpi_bus_type */

extern struct bus_type acpi_bus_type;

/*

 * Events

 * ------

 */

struct acpi_bus_event {

	struct list_head node;

	acpi_device_class device_class;

	acpi_bus_id bus_id;

	u32 type;

	u32 data;

};

extern struct kobject *acpi_kobj;

extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);

void acpi_bus_private_data_handler(acpi_handle, void *);

int acpi_bus_get_private_data(acpi_handle, void **);

int acpi_bus_attach_private_data(acpi_handle, void *);

void acpi_bus_detach_private_data(acpi_handle);

extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);

/*

 * External Functions

 */

int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);

struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);

void acpi_bus_put_acpi_device(struct acpi_device *adev);

acpi_status acpi_bus_get_status_handle(acpi_handle handle,

				       unsigned long long *sta);

int acpi_bus_get_status(struct acpi_device *device);

int acpi_bus_set_power(acpi_handle handle, int state);

const char *acpi_power_state_string(int state);

int acpi_device_get_power(struct acpi_device *device, int *state);

int acpi_device_set_power(struct acpi_device *device, int state);

int acpi_bus_init_power(struct acpi_device *device);

int acpi_device_fix_up_power(struct acpi_device *device);

int acpi_bus_update_power(acpi_handle handle, int *state_p);

int acpi_device_update_power(struct acpi_device *device, int *state_p);

bool acpi_bus_power_manageable(acpi_handle handle);

#ifdef CONFIG_PM

bool acpi_bus_can_wakeup(acpi_handle handle);

#else

static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }

#endif

void acpi_scan_lock_acquire(void);

void acpi_scan_lock_release(void);

void acpi_lock_hp_context(void);

void acpi_unlock_hp_context(void);

int acpi_scan_add_handler(struct acpi_scan_handler *handler);

int acpi_bus_register_driver(struct acpi_driver *driver);

void acpi_bus_unregister_driver(struct acpi_driver *driver);

int acpi_bus_scan(acpi_handle handle);

void acpi_bus_trim(struct acpi_device *start);

acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);

int acpi_match_device_ids(struct acpi_device *device,

			  const struct acpi_device_id *ids);

int acpi_create_dir(struct acpi_device *);

void acpi_remove_dir(struct acpi_device *);

static inline bool acpi_device_enumerated(struct acpi_device *adev)

{

	return adev && adev->flags.initialized && adev->flags.visited;

}

/**

 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver

 * @__acpi_driver: acpi_driver struct

 *

 * Helper macro for ACPI drivers which do not do anything special in module

 * init/exit. This eliminates a lot of boilerplate. Each module may only

 * use this macro once, and calling it replaces module_init() and module_exit()

 */

#define module_acpi_driver(__acpi_driver) \

	module_driver(__acpi_driver, acpi_bus_register_driver, \

		      acpi_bus_unregister_driver)

/*

 * Bind physical devices with ACPI devices

 */

struct acpi_bus_type {

	struct list_head list;

	const char *name;

	bool (*match)(struct device *dev);

	struct acpi_device * (*find_companion)(struct device *);

	void (*setup)(struct device *);

	void (*cleanup)(struct device *);

};

int register_acpi_bus_type(struct acpi_bus_type *);

int unregister_acpi_bus_type(struct acpi_bus_type *);

int acpi_bind_one(struct device *dev, struct acpi_device *adev);

int acpi_unbind_one(struct device *dev);

struct acpi_pci_root {

	struct acpi_device * device;

	struct pci_bus *bus;

	u16 segment;

	struct resource secondary;	/* downstream bus range */

	u32 osc_support_set;	/* _OSC state of support bits */

	u32 osc_control_set;	/* _OSC state of control bits */

	phys_addr_t mcfg_addr;

};

/* helper */

bool acpi_dma_supported(struct acpi_device *adev);

enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);

struct acpi_device *acpi_find_child_device(struct acpi_device *parent,

					   u64 address, bool check_children);

int acpi_is_root_bridge(acpi_handle);

struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);

int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);

int acpi_disable_wakeup_device_power(struct acpi_device *dev);

#ifdef CONFIG_PM

acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,

				 void (*work_func)(struct work_struct *work));

acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);

int acpi_pm_device_sleep_state(struct device *, int *, int);

int acpi_pm_device_run_wake(struct device *, bool);

#else

static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,

					       struct device *dev,

				               void (*work_func)(struct work_struct *work))

{

	return AE_SUPPORT;

}

static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)

{

	return AE_SUPPORT;

}

static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)

{

	if (p)

		*p = ACPI_STATE_D0;

	return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?

		m : ACPI_STATE_D0;

}

static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)

{

	return -ENODEV;

}

#endif

#ifdef CONFIG_PM_SLEEP

int acpi_pm_device_sleep_wake(struct device *, bool);

#else

static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)

{

	return -ENODEV;

}

#endif

#ifdef CONFIG_ACPI_SLEEP

u32 acpi_target_system_state(void);

#else

static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }

#endif

static inline bool acpi_device_power_manageable(struct acpi_device *adev)

{

	return adev->flags.power_manageable;

}

static inline bool acpi_device_can_wakeup(struct acpi_device *adev)

{

	return adev->wakeup.flags.valid;

}

static inline bool acpi_device_can_poweroff(struct acpi_device *adev)

{

	return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||

		((acpi_gbl_FADT.header.revision < 6) &&

		adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);

}

#else	/* CONFIG_ACPI */

static inline int register_acpi_bus_type(void *bus) { return 0; }

static inline int unregister_acpi_bus_type(void *bus) { return 0; }

#endif				/* CONFIG_ACPI */

#endif /*__ACPI_BUS_H__*/