[linux-block.git] / include / acpi / acpi_bus.h

/*
 *  acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
 *
 *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
 *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *  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.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

#ifndef __ACPI_BUS_H__
#define __ACPI_BUS_H__

#include <linux/device.h>

#include <acpi/acpi.h>

/* 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_hotplug_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);
#ifdef CONFIG_ACPI

#include <linux/proc_fs.h>

#define ACPI_BUS_FILE_ROOT	"acpi"
extern struct proc_dir_entry *acpi_root_dir;

enum acpi_bus_removal_type {
	ACPI_BUS_REMOVAL_NORMAL = 0,
	ACPI_BUS_REMOVAL_EJECT,
	ACPI_BUS_REMOVAL_SUPRISE,
	ACPI_BUS_REMOVAL_TYPE_COUNT
};

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 Driver
 * -----------
 */

typedef int (*acpi_op_add) (struct acpi_device * device);
typedef int (*acpi_op_remove) (struct acpi_device * device, int type);
typedef int (*acpi_op_start) (struct acpi_device * device);
typedef int (*acpi_op_bind) (struct acpi_device * device);
typedef int (*acpi_op_unbind) (struct acpi_device * device);
typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);

struct acpi_bus_ops {
	u32 acpi_op_add:1;
	u32 acpi_op_start:1;
};

struct acpi_device_ops {
	acpi_op_add add;
	acpi_op_remove remove;
	acpi_op_start start;
	acpi_op_bind bind;
	acpi_op_unbind unbind;
	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 bus_address:1;
	u32 removable:1;
	u32 ejectable:1;
	u32 lockable:1;
	u32 suprise_removal_ok:1;
	u32 power_manageable:1;
	u32 performance_manageable:1;
	u32 eject_pending:1;
	u32 reserved:23;
};

/* 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;
	char *id;
};

struct acpi_device_pnp {
	acpi_bus_id bus_id;	/* Object name */
	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_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 reserved:28;
};

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 acpi_handle_list 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 */
};

struct acpi_device_wakeup {
	acpi_handle gpe_device;
	u64 gpe_number;
	u64 sleep_state;
	struct acpi_handle_list resources;
	struct acpi_device_wakeup_flags flags;
	int prepare_count;
};

struct acpi_device_physical_node {
	u8 node_id;
	struct list_head node;
	struct device *dev;
};

/* set maximum of physical nodes to 32 for expansibility */
#define ACPI_MAX_PHYSICAL_NODE	32

/* Device */
struct acpi_device {
	int device_type;
	acpi_handle handle;		/* no handle for fixed hardware */
	struct acpi_device *parent;
	struct list_head children;
	struct list_head node;
	struct list_head wakeup_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_ops ops;
	struct acpi_driver *driver;
	void *driver_data;
	struct device dev;
	struct acpi_bus_ops bus_ops;	/* workaround for different code path for hotplug */
	enum acpi_bus_removal_type removal_type;	/* indicate for different removal type */
	u8 physical_node_count;
	struct list_head physical_node_list;
	struct mutex physical_node_lock;
	DECLARE_BITMAP(physical_node_id_bitmap, ACPI_MAX_PHYSICAL_NODE);
};

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)

/* 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;
};

struct acpi_eject_event {
	acpi_handle	handle;
	u32		event;
};

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 **);
extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
extern int register_acpi_notifier(struct notifier_block *);
extern int unregister_acpi_notifier(struct notifier_block *);

extern int register_acpi_bus_notifier(struct notifier_block *nb);
extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
/*
 * External Functions
 */

int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
void acpi_bus_data_handler(acpi_handle handle, void *context);
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);
int acpi_bus_update_power(acpi_handle handle, int *state_p);
bool acpi_bus_power_manageable(acpi_handle handle);
bool acpi_bus_can_wakeup(acpi_handle handle);
int acpi_power_resource_register_device(struct device *dev, acpi_handle handle);
void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle);
#ifdef CONFIG_ACPI_PROC_EVENT
int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
int acpi_bus_receive_event(struct acpi_bus_event *event);
#else
static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
	{ return 0; }
#endif
int acpi_bus_register_driver(struct acpi_driver *driver);
void acpi_bus_unregister_driver(struct acpi_driver *driver);
int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent,
		 acpi_handle handle, int type);
void acpi_bus_hot_remove_device(void *context);
int acpi_bus_trim(struct acpi_device *start, int rmdevice);
int acpi_bus_start(struct acpi_device *device);
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 *);


/**
 * 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;
	struct bus_type *bus;
	/* For general devices under the bus */
	int (*find_device) (struct device *, acpi_handle *);
	/* For bridges, such as PCI root bridge, IDE controller */
	int (*find_bridge) (struct device *, acpi_handle *);
};
int register_acpi_bus_type(struct acpi_bus_type *);
int unregister_acpi_bus_type(struct acpi_bus_type *);

struct acpi_pci_root {
	struct list_head node;
	struct acpi_device * device;
	struct acpi_pci_id id;
	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 */
acpi_handle acpi_get_child(acpi_handle, u64);
int acpi_is_root_bridge(acpi_handle);
acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->acpi_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
int acpi_pm_device_sleep_state(struct device *, int *, int);
#else
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) ? m : ACPI_STATE_D0;
}
#endif

#ifdef CONFIG_PM_SLEEP
int acpi_pm_device_run_wake(struct device *, bool);
int acpi_pm_device_sleep_wake(struct device *, bool);
#else
static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
{
	return -ENODEV;
}
static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
{
	return -ENODEV;
}
#endif

#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__*/
Commit	Line	Data
1da177e4 LT	1	/*
	2	* acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
	3	*
	4	* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
	5	* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
	6	*
	7	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or (at
	12	* your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful, but
	15	* WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License along
	20	* with this program; if not, write to the Free Software Foundation, Inc.,
	21	* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
	22	*
	23	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	24	*/
	25
	26	#ifndef __ACPI_BUS_H__
	27	#define __ACPI_BUS_H__
	28
5b327265	29	#include <linux/device.h>
1da177e4 LT	30
	31	#include <acpi/acpi.h>
	32
1da177e4 LT	33	/* TBD: Make dynamic */
	34	#define ACPI_MAX_HANDLES 10
	35	struct acpi_handle_list {
4be44fcd LB	36	u32 count;
4be44fcd LB	37	acpi_handle handles[ACPI_MAX_HANDLES];
1da177e4 LT	38	};
1da177e4 LT	39
1da177e4 LT	40	/* acpi_utils.h */
1da177e4 LT	41	acpi_status
4be44fcd LB	42	acpi_extract_package(union acpi_object *package,
4be44fcd LB	43	struct acpi_buffer format, struct acpi_buffer buffer);
1da177e4	44	acpi_status
4be44fcd LB	45	acpi_evaluate_integer(acpi_handle handle,
4be44fcd LB	46	acpi_string pathname,
27663c58	47	struct acpi_object_list arguments, unsigned long long data);
1da177e4	48	acpi_status
4be44fcd LB	49	acpi_evaluate_reference(acpi_handle handle,
	50	acpi_string pathname,
	51	struct acpi_object_list *arguments,
	52	struct acpi_handle_list *list);
275c58d7 TK	53	acpi_status
	54	acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event,
	55	u32 status_code, struct acpi_buffer *status_buf);
1da177e4	56
38ac0f1b	57	acpi_status
8ede06ab	58	acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
76f58584	59	#ifdef CONFIG_ACPI
1da177e4 LT	60
	61	#include <linux/proc_fs.h>
	62
	63	#define ACPI_BUS_FILE_ROOT "acpi"
4be44fcd	64	extern struct proc_dir_entry *acpi_root_dir;
1da177e4 LT	65
1da177e4 LT	66	enum acpi_bus_removal_type {
4be44fcd	67	ACPI_BUS_REMOVAL_NORMAL = 0,
1da177e4 LT	68	ACPI_BUS_REMOVAL_EJECT,
	69	ACPI_BUS_REMOVAL_SUPRISE,
	70	ACPI_BUS_REMOVAL_TYPE_COUNT
	71	};
	72
	73	enum acpi_bus_device_type {
4be44fcd	74	ACPI_BUS_TYPE_DEVICE = 0,
1da177e4 LT	75	ACPI_BUS_TYPE_POWER,
	76	ACPI_BUS_TYPE_PROCESSOR,
	77	ACPI_BUS_TYPE_THERMAL,
1da177e4 LT	78	ACPI_BUS_TYPE_POWER_BUTTON,
	79	ACPI_BUS_TYPE_SLEEP_BUTTON,
	80	ACPI_BUS_DEVICE_TYPE_COUNT
	81	};
	82
	83	struct acpi_driver;
	84	struct acpi_device;
	85
1da177e4 LT	86	/*
	87	* ACPI Driver
	88	* -----------
	89	*/
	90
4be44fcd LB	91	typedef int (acpi_op_add) (struct acpi_device device);
4be44fcd LB	92	typedef int (acpi_op_remove) (struct acpi_device device, int type);
4be44fcd	93	typedef int (acpi_op_start) (struct acpi_device device);
4be44fcd LB	94	typedef int (acpi_op_bind) (struct acpi_device device);
4be44fcd LB	95	typedef int (acpi_op_unbind) (struct acpi_device device);
46ec8598	96	typedef void (acpi_op_notify) (struct acpi_device device, u32 event);
1da177e4	97
3fb02738	98	struct acpi_bus_ops {
4be44fcd	99	u32 acpi_op_add:1;
4be44fcd	100	u32 acpi_op_start:1;
3fb02738 RS	101	};
3fb02738 RS	102
1da177e4	103	struct acpi_device_ops {
4be44fcd LB	104	acpi_op_add add;
4be44fcd LB	105	acpi_op_remove remove;
4be44fcd	106	acpi_op_start start;
4be44fcd LB	107	acpi_op_bind bind;
4be44fcd LB	108	acpi_op_unbind unbind;
46ec8598	109	acpi_op_notify notify;
1da177e4 LT	110	};
1da177e4 LT	111
6d278131 BH	112	#define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
6d278131 BH	113
1da177e4	114	struct acpi_driver {
4be44fcd LB	115	char name[80];
4be44fcd LB	116	char class[80];
8c8eb78f	117	const struct acpi_device_id ids; / Supported Hardware IDs */
6d278131	118	unsigned int flags;
4be44fcd	119	struct acpi_device_ops ops;
d43ec68e	120	struct device_driver drv;
1890a97a	121	struct module *owner;
1da177e4 LT	122	};
	123
	124	/*
	125	* ACPI Device
	126	* -----------
	127	*/
	128
	129	/* Status (_STA) */
	130
	131	struct acpi_device_status {
4be44fcd LB	132	u32 present:1;
	133	u32 enabled:1;
	134	u32 show_in_ui:1;
	135	u32 functional:1;
	136	u32 battery_present:1;
	137	u32 reserved:27;
1da177e4 LT	138	};
1da177e4 LT	139
1da177e4 LT	140	/* Flags */
	141
	142	struct acpi_device_flags {
4be44fcd	143	u32 dynamic_status:1;
4be44fcd	144	u32 bus_address:1;
4be44fcd LB	145	u32 removable:1;
	146	u32 ejectable:1;
	147	u32 lockable:1;
	148	u32 suprise_removal_ok:1;
	149	u32 power_manageable:1;
	150	u32 performance_manageable:1;
c4753e57 TK	151	u32 eject_pending:1;
c4753e57 TK	152	u32 reserved:23;
1da177e4 LT	153	};
1da177e4 LT	154
1da177e4 LT	155	/* File System */
	156
	157	struct acpi_device_dir {
4be44fcd	158	struct proc_dir_entry *entry;
1da177e4 LT	159	};
	160
	161	#define acpi_device_dir(d) ((d)->dir.entry)
	162
1da177e4 LT	163	/* Plug and Play */
1da177e4 LT	164
24c5c4c2	165	typedef char acpi_bus_id[8];
4be44fcd	166	typedef unsigned long acpi_bus_address;
4be44fcd LB	167	typedef char acpi_device_name[40];
4be44fcd LB	168	typedef char acpi_device_class[20];
1da177e4	169
7f47fa6c BH	170	struct acpi_hardware_id {
	171	struct list_head list;
	172	char *id;
	173	};
	174
1da177e4	175	struct acpi_device_pnp {
4be44fcd LB	176	acpi_bus_id bus_id; /* Object name */
4be44fcd LB	177	acpi_bus_address bus_address; /* _ADR */
15b8dd53	178	char unique_id; / _UID */
7f47fa6c	179	struct list_head ids; /* _HID and _CIDs */
4be44fcd LB	180	acpi_device_name device_name; /* Driver-determined */
4be44fcd LB	181	acpi_device_class device_class; /* " */
d1efe3c3	182	union acpi_object str_obj; / unicode string for _STR method */
1da177e4 LT	183	};
	184
	185	#define acpi_device_bid(d) ((d)->pnp.bus_id)
	186	#define acpi_device_adr(d) ((d)->pnp.bus_address)
620e112c	187	const char acpi_device_hid(struct acpi_device device);
1da177e4 LT	188	#define acpi_device_name(d) ((d)->pnp.device_name)
	189	#define acpi_device_class(d) ((d)->pnp.device_class)
	190
1da177e4 LT	191	/* Power Management */
	192
	193	struct acpi_device_power_flags {
4be44fcd LB	194	u32 explicit_get:1; /* _PSC present? */
	195	u32 power_resources:1; /* Power resources */
	196	u32 inrush_current:1; /* Serialize Dx->D0 */
	197	u32 power_removed:1; /* Optimize Dx->D0 */
	198	u32 reserved:28;
1da177e4 LT	199	};
	200
	201	struct acpi_device_power_state {
	202	struct {
4be44fcd LB	203	u8 valid:1;
	204	u8 explicit_set:1; /* _PSx present? */
	205	u8 reserved:6;
	206	} flags;
	207	int power; /* % Power (compared to D0) */
	208	int latency; /* Dx->D0 time (microseconds) */
	209	struct acpi_handle_list resources; /* Power resources referenced */
1da177e4 LT	210	};
	211
	212	struct acpi_device_power {
4be44fcd	213	int state; /* Current state */
1da177e4	214	struct acpi_device_power_flags flags;
b4a03b9a	215	struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
1da177e4 LT	216	};
1da177e4 LT	217
1da177e4 LT	218	/* Performance Management */
	219
	220	struct acpi_device_perf_flags {
4be44fcd	221	u8 reserved:8;
1da177e4 LT	222	};
	223
	224	struct acpi_device_perf_state {
	225	struct {
4be44fcd LB	226	u8 valid:1;
	227	u8 reserved:7;
	228	} flags;
	229	u8 power; /* % Power (compared to P0) */
	230	u8 performance; /* % Performance ( " ) */
	231	int latency; /* Px->P0 time (microseconds) */
1da177e4 LT	232	};
	233
	234	struct acpi_device_perf {
4be44fcd	235	int state;
1da177e4	236	struct acpi_device_perf_flags flags;
4be44fcd	237	int state_count;
1da177e4 LT	238	struct acpi_device_perf_state *states;
	239	};
	240
	241	/* Wakeup Management */
	242	struct acpi_device_wakeup_flags {
4be44fcd LB	243	u8 valid:1; /* Can successfully enable wakeup? */
4be44fcd LB	244	u8 run_wake:1; /* Run-Wake GPE devices */
b67ea761	245	u8 notifier_present:1; /* Wake-up notify handler has been installed */
1da177e4 LT	246	};
1da177e4 LT	247
1da177e4	248	struct acpi_device_wakeup {
4be44fcd	249	acpi_handle gpe_device;
439913ff LM	250	u64 gpe_number;
439913ff LM	251	u64 sleep_state;
4be44fcd	252	struct acpi_handle_list resources;
4be44fcd	253	struct acpi_device_wakeup_flags flags;
9b83ccd2	254	int prepare_count;
1da177e4 LT	255	};
1da177e4 LT	256
1033f904 LT	257	struct acpi_device_physical_node {
	258	u8 node_id;
	259	struct list_head node;
	260	struct device *dev;
	261	};
1da177e4	262
1033f904 LT	263	/* set maximum of physical nodes to 32 for expansibility */
1033f904 LT	264	#define ACPI_MAX_PHYSICAL_NODE 32
1da177e4	265
1033f904	266	/* Device */
1da177e4	267	struct acpi_device {
caaa6efb BH	268	int device_type;
caaa6efb BH	269	acpi_handle handle; /* no handle for fixed hardware */
4be44fcd LB	270	struct acpi_device *parent;
	271	struct list_head children;
	272	struct list_head node;
	273	struct list_head wakeup_list;
1da177e4 LT	274	struct acpi_device_status status;
1da177e4 LT	275	struct acpi_device_flags flags;
4be44fcd	276	struct acpi_device_pnp pnp;
1da177e4 LT	277	struct acpi_device_power power;
1da177e4 LT	278	struct acpi_device_wakeup wakeup;
4be44fcd LB	279	struct acpi_device_perf performance;
	280	struct acpi_device_dir dir;
	281	struct acpi_device_ops ops;
	282	struct acpi_driver *driver;
	283	void *driver_data;
5b327265	284	struct device dev;
c4168bff	285	struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
fd350943	286	enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
1033f904 LT	287	u8 physical_node_count;
	288	struct list_head physical_node_list;
	289	struct mutex physical_node_lock;
	290	DECLARE_BITMAP(physical_node_id_bitmap, ACPI_MAX_PHYSICAL_NODE);
1da177e4 LT	291	};
1da177e4 LT	292
db89b4f0 PM	293	static inline void acpi_driver_data(struct acpi_device d)
	294	{
	295	return d->driver_data;
	296	}
	297
d43ec68e PM	298	#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
d43ec68e PM	299	#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
1da177e4	300
55955aad DB	301	/* acpi_device.dev.bus == &acpi_bus_type */
	302	extern struct bus_type acpi_bus_type;
	303
1da177e4 LT	304	/*
	305	* Events
	306	* ------
	307	*/
	308
	309	struct acpi_bus_event {
4be44fcd LB	310	struct list_head node;
	311	acpi_device_class device_class;
	312	acpi_bus_id bus_id;
	313	u32 type;
	314	u32 data;
1da177e4 LT	315	};
1da177e4 LT	316
c4753e57 TK	317	struct acpi_eject_event {
	318	acpi_handle handle;
	319	u32 event;
	320	};
	321
99e0d2fc	322	extern struct kobject *acpi_kobj;
962ce8ca	323	extern int acpi_bus_generate_netlink_event(const char, const char, u8, int);
8e4319c4	324	void acpi_bus_private_data_handler(acpi_handle, void *);
20733939	325	int acpi_bus_get_private_data(acpi_handle, void **);
9ee85241 ZR	326	extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
	327	extern int register_acpi_notifier(struct notifier_block *);
	328	extern int unregister_acpi_notifier(struct notifier_block *);
6bd00a61 SL	329
	330	extern int register_acpi_bus_notifier(struct notifier_block *nb);
	331	extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
1da177e4 LT	332	/*
	333	* External Functions
	334	*/
	335
	336	int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
8e4319c4	337	void acpi_bus_data_handler(acpi_handle handle, void *context);
402ac536 BH	338	acpi_status acpi_bus_get_status_handle(acpi_handle handle,
402ac536 BH	339	unsigned long long *sta);
4be44fcd	340	int acpi_bus_get_status(struct acpi_device *device);
4be44fcd	341	int acpi_bus_set_power(acpi_handle handle, int state);
25eed407	342	int acpi_bus_update_power(acpi_handle handle, int *state_p);
3737b2b1	343	bool acpi_bus_power_manageable(acpi_handle handle);
eb9d0fe4	344	bool acpi_bus_can_wakeup(acpi_handle handle);
0090def6 LM	345	int acpi_power_resource_register_device(struct device *dev, acpi_handle handle);
0090def6 LM	346	void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle);
14e04fb3 LB	347	#ifdef CONFIG_ACPI_PROC_EVENT
14e04fb3 LB	348	int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
8db85d4c	349	int acpi_bus_generate_proc_event4(const char class, const char bid, u8 type, int data);
4be44fcd	350	int acpi_bus_receive_event(struct acpi_bus_event *event);
14e04fb3 LB	351	#else
	352	static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
	353	{ return 0; }
	354	#endif
4be44fcd	355	int acpi_bus_register_driver(struct acpi_driver *driver);
06ea8e08	356	void acpi_bus_unregister_driver(struct acpi_driver *driver);
4be44fcd LB	357	int acpi_bus_add(struct acpi_device *child, struct acpi_device parent,
4be44fcd LB	358	acpi_handle handle, int type);
c4753e57	359	void acpi_bus_hot_remove_device(void *context);
ceaba663	360	int acpi_bus_trim(struct acpi_device *start, int rmdevice);
4be44fcd	361	int acpi_bus_start(struct acpi_device *device);
fd350943	362	acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
8c8eb78f TR	363	int acpi_match_device_ids(struct acpi_device *device,
8c8eb78f TR	364	const struct acpi_device_id *ids);
1da177e4 LT	365	int acpi_create_dir(struct acpi_device *);
	366	void acpi_remove_dir(struct acpi_device *);
	367
0d2cf8f5 MW	368
	369	/**
	370	* module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
	371	* @__acpi_driver: acpi_driver struct
	372	*
	373	* Helper macro for ACPI drivers which do not do anything special in module
	374	* init/exit. This eliminates a lot of boilerplate. Each module may only
	375	* use this macro once, and calling it replaces module_init() and module_exit()
	376	*/
	377	#define module_acpi_driver(__acpi_driver) \
	378	module_driver(__acpi_driver, acpi_bus_register_driver, \
	379	acpi_bus_unregister_driver)
	380
4e10d12a DSL	381	/*
	382	* Bind physical devices with ACPI devices
	383	*/
4e10d12a	384	struct acpi_bus_type {
4be44fcd LB	385	struct list_head list;
	386	struct bus_type *bus;
	387	/* For general devices under the bus */
	388	int (find_device) (struct device , acpi_handle *);
4e10d12a	389	/* For bridges, such as PCI root bridge, IDE controller */
4be44fcd	390	int (find_bridge) (struct device , acpi_handle *);
4e10d12a DSL	391	};
	392	int register_acpi_bus_type(struct acpi_bus_type *);
	393	int unregister_acpi_bus_type(struct acpi_bus_type *);
22c13f9d	394
76d56de5 AC	395	struct acpi_pci_root {
	396	struct list_head node;
	397	struct acpi_device * device;
	398	struct acpi_pci_id id;
	399	struct pci_bus *bus;
	400	u16 segment;
6ad95513	401	struct resource secondary; /* downstream bus range */
76d56de5 AC	402
	403	u32 osc_support_set; /* _OSC state of support bits */
	404	u32 osc_control_set; /* _OSC state of control bits */
f4b57a3b	405	phys_addr_t mcfg_addr;
76d56de5 AC	406	};
76d56de5 AC	407
4e10d12a	408	/* helper */
439913ff	409	acpi_handle acpi_get_child(acpi_handle, u64);
27558203	410	int acpi_is_root_bridge(acpi_handle);
4e10d12a	411	acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
76d56de5	412	struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
06f64c8f	413	#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->acpi_handle))
4e10d12a	414
b67ea761 RW	415	int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
	416	int acpi_disable_wakeup_device_power(struct acpi_device *dev);
	417
aa338601	418	#ifdef CONFIG_PM
ee85f543	419	int acpi_pm_device_sleep_state(struct device , int , int);
761afb86	420	#else
ee85f543	421	static inline int acpi_pm_device_sleep_state(struct device d, int p, int m)
296699de RW	422	{
	423	if (p)
	424	*p = ACPI_STATE_D0;
ee85f543	425	return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0;
296699de	426	}
761afb86 RW	427	#endif
	428
	429	#ifdef CONFIG_PM_SLEEP
b24e5098	430	int acpi_pm_device_run_wake(struct device *, bool);
761afb86 RW	431	int acpi_pm_device_sleep_wake(struct device *, bool);
761afb86 RW	432	#else
b24e5098 LM	433	static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
	434	{
	435	return -ENODEV;
	436	}
f7a1b860 DH	437	static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
	438	{
	439	return -ENODEV;
	440	}
761afb86	441	#endif
fd4aff1a	442
66886d6f MG	443	#else /* CONFIG_ACPI */
66886d6f MG	444
7ae30986 LB	445	static inline int register_acpi_bus_type(void *bus) { return 0; }
7ae30986 LB	446	static inline int unregister_acpi_bus_type(void *bus) { return 0; }
66886d6f	447
fd350943	448	#endif /* CONFIG_ACPI */
1da177e4 LT	449
1da177e4 LT	450	#endif /__ACPI_BUS_H__/