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26#ifndef __ACPI_BUS_H__
27#define __ACPI_BUS_H__
28
29#include <linux/device.h>
30#include <linux/property.h>
31
32
33#define ACPI_MAX_HANDLES 10
34struct acpi_handle_list {
35 u32 count;
36 acpi_handle handles[ACPI_MAX_HANDLES];
37};
38
39
40acpi_status
41acpi_extract_package(union acpi_object *package,
42 struct acpi_buffer *format, struct acpi_buffer *buffer);
43acpi_status
44acpi_evaluate_integer(acpi_handle handle,
45 acpi_string pathname,
46 struct acpi_object_list *arguments, unsigned long long *data);
47acpi_status
48acpi_evaluate_reference(acpi_handle handle,
49 acpi_string pathname,
50 struct acpi_object_list *arguments,
51 struct acpi_handle_list *list);
52acpi_status
53acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
54 struct acpi_buffer *status_buf);
55
56acpi_status
57acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
58
59bool acpi_has_method(acpi_handle handle, char *name);
60acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
61 u64 arg);
62acpi_status acpi_evaluate_ej0(acpi_handle handle);
63acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
64bool acpi_ata_match(acpi_handle handle);
65bool acpi_bay_match(acpi_handle handle);
66bool acpi_dock_match(acpi_handle handle);
67
68bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, int rev, u64 funcs);
69union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid,
70 int rev, int func, union acpi_object *argv4);
71
72static inline union acpi_object *
73acpi_evaluate_dsm_typed(acpi_handle handle, const u8 *uuid, int rev, int func,
74 union acpi_object *argv4, acpi_object_type type)
75{
76 union acpi_object *obj;
77
78 obj = acpi_evaluate_dsm(handle, uuid, rev, func, argv4);
79 if (obj && obj->type != type) {
80 ACPI_FREE(obj);
81 obj = NULL;
82 }
83
84 return obj;
85}
86
87#define ACPI_INIT_DSM_ARGV4(cnt, eles) \
88 { \
89 .package.type = ACPI_TYPE_PACKAGE, \
90 .package.count = (cnt), \
91 .package.elements = (eles) \
92 }
93
94#ifdef CONFIG_ACPI
95
96#include <linux/proc_fs.h>
97
98#define ACPI_BUS_FILE_ROOT "acpi"
99extern struct proc_dir_entry *acpi_root_dir;
100
101enum acpi_bus_device_type {
102 ACPI_BUS_TYPE_DEVICE = 0,
103 ACPI_BUS_TYPE_POWER,
104 ACPI_BUS_TYPE_PROCESSOR,
105 ACPI_BUS_TYPE_THERMAL,
106 ACPI_BUS_TYPE_POWER_BUTTON,
107 ACPI_BUS_TYPE_SLEEP_BUTTON,
108 ACPI_BUS_DEVICE_TYPE_COUNT
109};
110
111struct acpi_driver;
112struct acpi_device;
113
114
115
116
117
118
119struct acpi_hotplug_profile {
120 struct kobject kobj;
121 int (*scan_dependent)(struct acpi_device *adev);
122 void (*notify_online)(struct acpi_device *adev);
123 bool enabled:1;
124 bool demand_offline:1;
125};
126
127static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
128 struct kobject *kobj)
129{
130 return container_of(kobj, struct acpi_hotplug_profile, kobj);
131}
132
133struct acpi_scan_handler {
134 const struct acpi_device_id *ids;
135 struct list_head list_node;
136 bool (*match)(char *idstr, const struct acpi_device_id **matchid);
137 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
138 void (*detach)(struct acpi_device *dev);
139 void (*bind)(struct device *phys_dev);
140 void (*unbind)(struct device *phys_dev);
141 struct acpi_hotplug_profile hotplug;
142};
143
144
145
146
147
148
149struct acpi_hotplug_context {
150 struct acpi_device *self;
151 int (*notify)(struct acpi_device *, u32);
152 void (*uevent)(struct acpi_device *, u32);
153 void (*fixup)(struct acpi_device *);
154};
155
156
157
158
159
160
161typedef int (*acpi_op_add) (struct acpi_device * device);
162typedef int (*acpi_op_remove) (struct acpi_device * device);
163typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
164
165struct acpi_device_ops {
166 acpi_op_add add;
167 acpi_op_remove remove;
168 acpi_op_notify notify;
169};
170
171#define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1
172
173struct acpi_driver {
174 char name[80];
175 char class[80];
176 const struct acpi_device_id *ids;
177 unsigned int flags;
178 struct acpi_device_ops ops;
179 struct device_driver drv;
180 struct module *owner;
181};
182
183
184
185
186
187
188
189
190struct acpi_device_status {
191 u32 present:1;
192 u32 enabled:1;
193 u32 show_in_ui:1;
194 u32 functional:1;
195 u32 battery_present:1;
196 u32 reserved:27;
197};
198
199
200
201struct acpi_device_flags {
202 u32 dynamic_status:1;
203 u32 removable:1;
204 u32 ejectable:1;
205 u32 power_manageable:1;
206 u32 match_driver:1;
207 u32 initialized:1;
208 u32 visited:1;
209 u32 hotplug_notify:1;
210 u32 is_dock_station:1;
211 u32 reserved:23;
212};
213
214
215
216struct acpi_device_dir {
217 struct proc_dir_entry *entry;
218};
219
220#define acpi_device_dir(d) ((d)->dir.entry)
221
222
223
224typedef char acpi_bus_id[8];
225typedef unsigned long acpi_bus_address;
226typedef char acpi_device_name[40];
227typedef char acpi_device_class[20];
228
229struct acpi_hardware_id {
230 struct list_head list;
231 char *id;
232};
233
234struct acpi_pnp_type {
235 u32 hardware_id:1;
236 u32 bus_address:1;
237 u32 platform_id:1;
238 u32 reserved:29;
239};
240
241struct acpi_device_pnp {
242 acpi_bus_id bus_id;
243 struct acpi_pnp_type type;
244 acpi_bus_address bus_address;
245 char *unique_id;
246 struct list_head ids;
247 acpi_device_name device_name;
248 acpi_device_class device_class;
249 union acpi_object *str_obj;
250};
251
252#define acpi_device_bid(d) ((d)->pnp.bus_id)
253#define acpi_device_adr(d) ((d)->pnp.bus_address)
254const char *acpi_device_hid(struct acpi_device *device);
255#define acpi_device_uid(d) ((d)->pnp.unique_id)
256#define acpi_device_name(d) ((d)->pnp.device_name)
257#define acpi_device_class(d) ((d)->pnp.device_class)
258
259
260
261struct acpi_device_power_flags {
262 u32 explicit_get:1;
263 u32 power_resources:1;
264 u32 inrush_current:1;
265 u32 power_removed:1;
266 u32 ignore_parent:1;
267 u32 dsw_present:1;
268 u32 reserved:26;
269};
270
271struct acpi_device_power_state {
272 struct {
273 u8 valid:1;
274 u8 os_accessible:1;
275 u8 explicit_set:1;
276 u8 reserved:6;
277 } flags;
278 int power;
279 int latency;
280 struct list_head resources;
281};
282
283struct acpi_device_power {
284 int state;
285 struct acpi_device_power_flags flags;
286 struct acpi_device_power_state states[ACPI_D_STATE_COUNT];
287};
288
289
290
291struct acpi_device_perf_flags {
292 u8 reserved:8;
293};
294
295struct acpi_device_perf_state {
296 struct {
297 u8 valid:1;
298 u8 reserved:7;
299 } flags;
300 u8 power;
301 u8 performance;
302 int latency;
303};
304
305struct acpi_device_perf {
306 int state;
307 struct acpi_device_perf_flags flags;
308 int state_count;
309 struct acpi_device_perf_state *states;
310};
311
312
313struct acpi_device_wakeup_flags {
314 u8 valid:1;
315 u8 run_wake:1;
316 u8 notifier_present:1;
317 u8 enabled:1;
318};
319
320struct acpi_device_wakeup_context {
321 struct work_struct work;
322 struct device *dev;
323};
324
325struct acpi_device_wakeup {
326 acpi_handle gpe_device;
327 u64 gpe_number;
328 u64 sleep_state;
329 struct list_head resources;
330 struct acpi_device_wakeup_flags flags;
331 struct acpi_device_wakeup_context context;
332 struct wakeup_source *ws;
333 int prepare_count;
334};
335
336struct acpi_device_physical_node {
337 unsigned int node_id;
338 struct list_head node;
339 struct device *dev;
340 bool put_online:1;
341};
342
343
344struct acpi_device_data {
345 const union acpi_object *pointer;
346 const union acpi_object *properties;
347 const union acpi_object *of_compatible;
348};
349
350struct acpi_gpio_mapping;
351
352
353struct acpi_device {
354 int device_type;
355 acpi_handle handle;
356 struct fwnode_handle fwnode;
357 struct acpi_device *parent;
358 struct list_head children;
359 struct list_head node;
360 struct list_head wakeup_list;
361 struct list_head del_list;
362 struct acpi_device_status status;
363 struct acpi_device_flags flags;
364 struct acpi_device_pnp pnp;
365 struct acpi_device_power power;
366 struct acpi_device_wakeup wakeup;
367 struct acpi_device_perf performance;
368 struct acpi_device_dir dir;
369 struct acpi_device_data data;
370 struct acpi_scan_handler *handler;
371 struct acpi_hotplug_context *hp;
372 struct acpi_driver *driver;
373 const struct acpi_gpio_mapping *driver_gpios;
374 void *driver_data;
375 struct device dev;
376 unsigned int physical_node_count;
377 unsigned int dep_unmet;
378 struct list_head physical_node_list;
379 struct mutex physical_node_lock;
380 void (*remove)(struct acpi_device *);
381};
382
383static inline bool is_acpi_node(struct fwnode_handle *fwnode)
384{
385 return fwnode && fwnode->type == FWNODE_ACPI;
386}
387
388static inline struct acpi_device *acpi_node(struct fwnode_handle *fwnode)
389{
390 return is_acpi_node(fwnode) ?
391 container_of(fwnode, struct acpi_device, fwnode) : NULL;
392}
393
394static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
395{
396 return &adev->fwnode;
397}
398
399static inline void *acpi_driver_data(struct acpi_device *d)
400{
401 return d->driver_data;
402}
403
404#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
405#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
406
407static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
408{
409 *((u32 *)&adev->status) = sta;
410}
411
412static inline void acpi_set_hp_context(struct acpi_device *adev,
413 struct acpi_hotplug_context *hp)
414{
415 hp->self = adev;
416 adev->hp = hp;
417}
418
419void acpi_initialize_hp_context(struct acpi_device *adev,
420 struct acpi_hotplug_context *hp,
421 int (*notify)(struct acpi_device *, u32),
422 void (*uevent)(struct acpi_device *, u32));
423
424
425extern struct bus_type acpi_bus_type;
426
427
428
429
430
431
432struct acpi_bus_event {
433 struct list_head node;
434 acpi_device_class device_class;
435 acpi_bus_id bus_id;
436 u32 type;
437 u32 data;
438};
439
440extern struct kobject *acpi_kobj;
441extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
442void acpi_bus_private_data_handler(acpi_handle, void *);
443int acpi_bus_get_private_data(acpi_handle, void **);
444int acpi_bus_attach_private_data(acpi_handle, void *);
445void acpi_bus_detach_private_data(acpi_handle);
446extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
447extern int register_acpi_notifier(struct notifier_block *);
448extern int unregister_acpi_notifier(struct notifier_block *);
449
450
451
452
453
454int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
455struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
456void acpi_bus_put_acpi_device(struct acpi_device *adev);
457acpi_status acpi_bus_get_status_handle(acpi_handle handle,
458 unsigned long long *sta);
459int acpi_bus_get_status(struct acpi_device *device);
460
461int acpi_bus_set_power(acpi_handle handle, int state);
462const char *acpi_power_state_string(int state);
463int acpi_device_get_power(struct acpi_device *device, int *state);
464int acpi_device_set_power(struct acpi_device *device, int state);
465int acpi_bus_init_power(struct acpi_device *device);
466int acpi_device_fix_up_power(struct acpi_device *device);
467int acpi_bus_update_power(acpi_handle handle, int *state_p);
468int acpi_device_update_power(struct acpi_device *device, int *state_p);
469bool acpi_bus_power_manageable(acpi_handle handle);
470
471#ifdef CONFIG_PM
472bool acpi_bus_can_wakeup(acpi_handle handle);
473#else
474static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
475#endif
476
477void acpi_scan_lock_acquire(void);
478void acpi_scan_lock_release(void);
479void acpi_lock_hp_context(void);
480void acpi_unlock_hp_context(void);
481int acpi_scan_add_handler(struct acpi_scan_handler *handler);
482int acpi_bus_register_driver(struct acpi_driver *driver);
483void acpi_bus_unregister_driver(struct acpi_driver *driver);
484int acpi_bus_scan(acpi_handle handle);
485void acpi_bus_trim(struct acpi_device *start);
486acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
487int acpi_match_device_ids(struct acpi_device *device,
488 const struct acpi_device_id *ids);
489int acpi_create_dir(struct acpi_device *);
490void acpi_remove_dir(struct acpi_device *);
491
492static inline bool acpi_device_enumerated(struct acpi_device *adev)
493{
494 return adev && adev->flags.initialized && adev->flags.visited;
495}
496
497
498
499
500
501
502
503
504
505#define module_acpi_driver(__acpi_driver) \
506 module_driver(__acpi_driver, acpi_bus_register_driver, \
507 acpi_bus_unregister_driver)
508
509
510
511
512struct acpi_bus_type {
513 struct list_head list;
514 const char *name;
515 bool (*match)(struct device *dev);
516 struct acpi_device * (*find_companion)(struct device *);
517 void (*setup)(struct device *);
518 void (*cleanup)(struct device *);
519};
520int register_acpi_bus_type(struct acpi_bus_type *);
521int unregister_acpi_bus_type(struct acpi_bus_type *);
522int acpi_bind_one(struct device *dev, struct acpi_device *adev);
523int acpi_unbind_one(struct device *dev);
524
525struct acpi_pci_root {
526 struct acpi_device * device;
527 struct pci_bus *bus;
528 u16 segment;
529 struct resource secondary;
530
531 u32 osc_support_set;
532 u32 osc_control_set;
533 phys_addr_t mcfg_addr;
534};
535
536
537
538struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
539 u64 address, bool check_children);
540int acpi_is_root_bridge(acpi_handle);
541struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
542
543int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
544int acpi_disable_wakeup_device_power(struct acpi_device *dev);
545
546#ifdef CONFIG_PM
547acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
548 void (*work_func)(struct work_struct *work));
549acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
550int acpi_pm_device_sleep_state(struct device *, int *, int);
551int acpi_pm_device_run_wake(struct device *, bool);
552#else
553static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
554 struct device *dev,
555 void (*work_func)(struct work_struct *work))
556{
557 return AE_SUPPORT;
558}
559static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
560{
561 return AE_SUPPORT;
562}
563static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
564{
565 if (p)
566 *p = ACPI_STATE_D0;
567
568 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
569 m : ACPI_STATE_D0;
570}
571static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
572{
573 return -ENODEV;
574}
575#endif
576
577#ifdef CONFIG_PM_SLEEP
578int acpi_pm_device_sleep_wake(struct device *, bool);
579#else
580static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
581{
582 return -ENODEV;
583}
584#endif
585
586#ifdef CONFIG_ACPI_SLEEP
587u32 acpi_target_system_state(void);
588#else
589static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
590#endif
591
592static inline bool acpi_device_power_manageable(struct acpi_device *adev)
593{
594 return adev->flags.power_manageable;
595}
596
597static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
598{
599 return adev->wakeup.flags.valid;
600}
601
602static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
603{
604 return adev->power.states[ACPI_STATE_D3_COLD].flags.os_accessible;
605}
606
607#else
608
609static inline int register_acpi_bus_type(void *bus) { return 0; }
610static inline int unregister_acpi_bus_type(void *bus) { return 0; }
611
612#endif
613
614#endif
615