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22#ifndef __ACPI_BUS_H__
23#define __ACPI_BUS_H__
24
25#include <linux/device.h>
26#include <linux/property.h>
27
28
29#define ACPI_MAX_HANDLES 10
30struct acpi_handle_list {
31 u32 count;
32 acpi_handle handles[ACPI_MAX_HANDLES];
33};
34
35
36acpi_status
37acpi_extract_package(union acpi_object *package,
38 struct acpi_buffer *format, struct acpi_buffer *buffer);
39acpi_status
40acpi_evaluate_integer(acpi_handle handle,
41 acpi_string pathname,
42 struct acpi_object_list *arguments, unsigned long long *data);
43acpi_status
44acpi_evaluate_reference(acpi_handle handle,
45 acpi_string pathname,
46 struct acpi_object_list *arguments,
47 struct acpi_handle_list *list);
48acpi_status
49acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
50 struct acpi_buffer *status_buf);
51
52acpi_status
53acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
54
55bool acpi_has_method(acpi_handle handle, char *name);
56acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
57 u64 arg);
58acpi_status acpi_evaluate_ej0(acpi_handle handle);
59acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
60bool acpi_ata_match(acpi_handle handle);
61bool acpi_bay_match(acpi_handle handle);
62bool acpi_dock_match(acpi_handle handle);
63
64bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs);
65union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid,
66 u64 rev, u64 func, union acpi_object *argv4);
67
68static inline union acpi_object *
69acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev,
70 u64 func, union acpi_object *argv4,
71 acpi_object_type type)
72{
73 union acpi_object *obj;
74
75 obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4);
76 if (obj && obj->type != type) {
77 ACPI_FREE(obj);
78 obj = NULL;
79 }
80
81 return obj;
82}
83
84#define ACPI_INIT_DSM_ARGV4(cnt, eles) \
85 { \
86 .package.type = ACPI_TYPE_PACKAGE, \
87 .package.count = (cnt), \
88 .package.elements = (eles) \
89 }
90
91bool acpi_dev_found(const char *hid);
92bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);
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)(const 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 of_compatible_ok:1;
212 u32 coherent_dma:1;
213 u32 cca_seen:1;
214 u32 spi_i2c_slave:1;
215 u32 reserved:19;
216};
217
218
219
220struct acpi_device_dir {
221 struct proc_dir_entry *entry;
222};
223
224#define acpi_device_dir(d) ((d)->dir.entry)
225
226
227
228typedef char acpi_bus_id[8];
229typedef unsigned long acpi_bus_address;
230typedef char acpi_device_name[40];
231typedef char acpi_device_class[20];
232
233struct acpi_hardware_id {
234 struct list_head list;
235 const char *id;
236};
237
238struct acpi_pnp_type {
239 u32 hardware_id:1;
240 u32 bus_address:1;
241 u32 platform_id:1;
242 u32 reserved:29;
243};
244
245struct acpi_device_pnp {
246 acpi_bus_id bus_id;
247 struct acpi_pnp_type type;
248 acpi_bus_address bus_address;
249 char *unique_id;
250 struct list_head ids;
251 acpi_device_name device_name;
252 acpi_device_class device_class;
253 union acpi_object *str_obj;
254};
255
256#define acpi_device_bid(d) ((d)->pnp.bus_id)
257#define acpi_device_adr(d) ((d)->pnp.bus_address)
258const char *acpi_device_hid(struct acpi_device *device);
259#define acpi_device_uid(d) ((d)->pnp.unique_id)
260#define acpi_device_name(d) ((d)->pnp.device_name)
261#define acpi_device_class(d) ((d)->pnp.device_class)
262
263
264
265struct acpi_device_power_flags {
266 u32 explicit_get:1;
267 u32 power_resources:1;
268 u32 inrush_current:1;
269 u32 power_removed:1;
270 u32 ignore_parent:1;
271 u32 dsw_present:1;
272 u32 reserved:26;
273};
274
275struct acpi_device_power_state {
276 struct {
277 u8 valid:1;
278 u8 explicit_set:1;
279 u8 reserved:6;
280 } flags;
281 int power;
282 int latency;
283 struct list_head resources;
284};
285
286struct acpi_device_power {
287 int state;
288 struct acpi_device_power_flags flags;
289 struct acpi_device_power_state states[ACPI_D_STATE_COUNT];
290};
291
292
293
294struct acpi_device_perf_flags {
295 u8 reserved:8;
296};
297
298struct acpi_device_perf_state {
299 struct {
300 u8 valid:1;
301 u8 reserved:7;
302 } flags;
303 u8 power;
304 u8 performance;
305 int latency;
306};
307
308struct acpi_device_perf {
309 int state;
310 struct acpi_device_perf_flags flags;
311 int state_count;
312 struct acpi_device_perf_state *states;
313};
314
315
316struct acpi_device_wakeup_flags {
317 u8 valid:1;
318 u8 notifier_present:1;
319 u8 enabled:1;
320};
321
322struct acpi_device_wakeup_context {
323 void (*func)(struct acpi_device_wakeup_context *context);
324 struct device *dev;
325};
326
327struct acpi_device_wakeup {
328 acpi_handle gpe_device;
329 u64 gpe_number;
330 u64 sleep_state;
331 struct list_head resources;
332 struct acpi_device_wakeup_flags flags;
333 struct acpi_device_wakeup_context context;
334 struct wakeup_source *ws;
335 int prepare_count;
336};
337
338struct acpi_device_physical_node {
339 unsigned int node_id;
340 struct list_head node;
341 struct device *dev;
342 bool put_online:1;
343};
344
345
346struct acpi_device_data {
347 const union acpi_object *pointer;
348 const union acpi_object *properties;
349 const union acpi_object *of_compatible;
350 struct list_head subnodes;
351};
352
353struct acpi_gpio_mapping;
354
355
356struct acpi_device {
357 int device_type;
358 acpi_handle handle;
359 struct fwnode_handle fwnode;
360 struct acpi_device *parent;
361 struct list_head children;
362 struct list_head node;
363 struct list_head wakeup_list;
364 struct list_head del_list;
365 struct acpi_device_status status;
366 struct acpi_device_flags flags;
367 struct acpi_device_pnp pnp;
368 struct acpi_device_power power;
369 struct acpi_device_wakeup wakeup;
370 struct acpi_device_perf performance;
371 struct acpi_device_dir dir;
372 struct acpi_device_data data;
373 struct acpi_scan_handler *handler;
374 struct acpi_hotplug_context *hp;
375 struct acpi_driver *driver;
376 const struct acpi_gpio_mapping *driver_gpios;
377 void *driver_data;
378 struct device dev;
379 unsigned int physical_node_count;
380 unsigned int dep_unmet;
381 struct list_head physical_node_list;
382 struct mutex physical_node_lock;
383 void (*remove)(struct acpi_device *);
384};
385
386
387struct acpi_data_node {
388 const char *name;
389 acpi_handle handle;
390 struct fwnode_handle fwnode;
391 struct fwnode_handle *parent;
392 struct acpi_device_data data;
393 struct list_head sibling;
394 struct kobject kobj;
395 struct completion kobj_done;
396};
397
398static inline bool is_acpi_node(struct fwnode_handle *fwnode)
399{
400 return !IS_ERR_OR_NULL(fwnode) && (fwnode->type == FWNODE_ACPI
401 || fwnode->type == FWNODE_ACPI_DATA);
402}
403
404static inline bool is_acpi_device_node(struct fwnode_handle *fwnode)
405{
406 return !IS_ERR_OR_NULL(fwnode) && fwnode->type == FWNODE_ACPI;
407}
408
409static inline struct acpi_device *to_acpi_device_node(struct fwnode_handle *fwnode)
410{
411 return is_acpi_device_node(fwnode) ?
412 container_of(fwnode, struct acpi_device, fwnode) : NULL;
413}
414
415static inline bool is_acpi_data_node(struct fwnode_handle *fwnode)
416{
417 return fwnode && fwnode->type == FWNODE_ACPI_DATA;
418}
419
420static inline struct acpi_data_node *to_acpi_data_node(struct fwnode_handle *fwnode)
421{
422 return is_acpi_data_node(fwnode) ?
423 container_of(fwnode, struct acpi_data_node, fwnode) : NULL;
424}
425
426static inline bool acpi_data_node_match(struct fwnode_handle *fwnode,
427 const char *name)
428{
429 return is_acpi_data_node(fwnode) ?
430 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false;
431}
432
433static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev)
434{
435 return &adev->fwnode;
436}
437
438static inline void *acpi_driver_data(struct acpi_device *d)
439{
440 return d->driver_data;
441}
442
443#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
444#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
445
446static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
447{
448 *((u32 *)&adev->status) = sta;
449}
450
451static inline void acpi_set_hp_context(struct acpi_device *adev,
452 struct acpi_hotplug_context *hp)
453{
454 hp->self = adev;
455 adev->hp = hp;
456}
457
458void acpi_initialize_hp_context(struct acpi_device *adev,
459 struct acpi_hotplug_context *hp,
460 int (*notify)(struct acpi_device *, u32),
461 void (*uevent)(struct acpi_device *, u32));
462
463
464extern struct bus_type acpi_bus_type;
465
466
467
468
469
470
471struct acpi_bus_event {
472 struct list_head node;
473 acpi_device_class device_class;
474 acpi_bus_id bus_id;
475 u32 type;
476 u32 data;
477};
478
479extern struct kobject *acpi_kobj;
480extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
481void acpi_bus_private_data_handler(acpi_handle, void *);
482int acpi_bus_get_private_data(acpi_handle, void **);
483int acpi_bus_attach_private_data(acpi_handle, void *);
484void acpi_bus_detach_private_data(acpi_handle);
485extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
486extern int register_acpi_notifier(struct notifier_block *);
487extern int unregister_acpi_notifier(struct notifier_block *);
488
489
490
491
492
493int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
494struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
495void acpi_bus_put_acpi_device(struct acpi_device *adev);
496acpi_status acpi_bus_get_status_handle(acpi_handle handle,
497 unsigned long long *sta);
498int acpi_bus_get_status(struct acpi_device *device);
499
500int acpi_bus_set_power(acpi_handle handle, int state);
501const char *acpi_power_state_string(int state);
502int acpi_device_get_power(struct acpi_device *device, int *state);
503int acpi_device_set_power(struct acpi_device *device, int state);
504int acpi_bus_init_power(struct acpi_device *device);
505int acpi_device_fix_up_power(struct acpi_device *device);
506int acpi_bus_update_power(acpi_handle handle, int *state_p);
507int acpi_device_update_power(struct acpi_device *device, int *state_p);
508bool acpi_bus_power_manageable(acpi_handle handle);
509
510#ifdef CONFIG_PM
511bool acpi_bus_can_wakeup(acpi_handle handle);
512#else
513static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
514#endif
515
516void acpi_scan_lock_acquire(void);
517void acpi_scan_lock_release(void);
518void acpi_lock_hp_context(void);
519void acpi_unlock_hp_context(void);
520int acpi_scan_add_handler(struct acpi_scan_handler *handler);
521int acpi_bus_register_driver(struct acpi_driver *driver);
522void acpi_bus_unregister_driver(struct acpi_driver *driver);
523int acpi_bus_scan(acpi_handle handle);
524void acpi_bus_trim(struct acpi_device *start);
525acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
526int acpi_match_device_ids(struct acpi_device *device,
527 const struct acpi_device_id *ids);
528void acpi_set_modalias(struct acpi_device *adev, const char *default_id,
529 char *modalias, size_t len);
530int acpi_create_dir(struct acpi_device *);
531void acpi_remove_dir(struct acpi_device *);
532
533static inline bool acpi_device_enumerated(struct acpi_device *adev)
534{
535 return adev && adev->flags.initialized && adev->flags.visited;
536}
537
538
539
540
541
542
543
544
545
546#define module_acpi_driver(__acpi_driver) \
547 module_driver(__acpi_driver, acpi_bus_register_driver, \
548 acpi_bus_unregister_driver)
549
550
551
552
553struct acpi_bus_type {
554 struct list_head list;
555 const char *name;
556 bool (*match)(struct device *dev);
557 struct acpi_device * (*find_companion)(struct device *);
558 void (*setup)(struct device *);
559 void (*cleanup)(struct device *);
560};
561int register_acpi_bus_type(struct acpi_bus_type *);
562int unregister_acpi_bus_type(struct acpi_bus_type *);
563int acpi_bind_one(struct device *dev, struct acpi_device *adev);
564int acpi_unbind_one(struct device *dev);
565
566struct acpi_pci_root {
567 struct acpi_device * device;
568 struct pci_bus *bus;
569 u16 segment;
570 struct resource secondary;
571
572 u32 osc_support_set;
573 u32 osc_control_set;
574 phys_addr_t mcfg_addr;
575};
576
577
578
579bool acpi_dma_supported(struct acpi_device *adev);
580enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev);
581int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr);
582void acpi_dma_deconfigure(struct device *dev);
583
584struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
585 u64 address, bool check_children);
586int acpi_is_root_bridge(acpi_handle);
587struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
588
589int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
590int acpi_disable_wakeup_device_power(struct acpi_device *dev);
591
592#ifdef CONFIG_X86
593bool acpi_device_always_present(struct acpi_device *adev);
594#else
595static inline bool acpi_device_always_present(struct acpi_device *adev)
596{
597 return false;
598}
599#endif
600
601#ifdef CONFIG_PM
602void acpi_pm_wakeup_event(struct device *dev);
603acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev,
604 void (*func)(struct acpi_device_wakeup_context *context));
605acpi_status acpi_remove_pm_notifier(struct acpi_device *adev);
606bool acpi_pm_device_can_wakeup(struct device *dev);
607int acpi_pm_device_sleep_state(struct device *, int *, int);
608int acpi_pm_set_device_wakeup(struct device *dev, bool enable);
609#else
610static inline void acpi_pm_wakeup_event(struct device *dev)
611{
612}
613static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
614 struct device *dev,
615 void (*func)(struct acpi_device_wakeup_context *context))
616{
617 return AE_SUPPORT;
618}
619static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
620{
621 return AE_SUPPORT;
622}
623static inline bool acpi_pm_device_can_wakeup(struct device *dev)
624{
625 return false;
626}
627static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
628{
629 if (p)
630 *p = ACPI_STATE_D0;
631
632 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
633 m : ACPI_STATE_D0;
634}
635static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable)
636{
637 return -ENODEV;
638}
639#endif
640
641#ifdef CONFIG_ACPI_SLEEP
642u32 acpi_target_system_state(void);
643#else
644static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
645#endif
646
647static inline bool acpi_device_power_manageable(struct acpi_device *adev)
648{
649 return adev->flags.power_manageable;
650}
651
652static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
653{
654 return adev->wakeup.flags.valid;
655}
656
657static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
658{
659 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid ||
660 ((acpi_gbl_FADT.header.revision < 6) &&
661 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set);
662}
663
664#else
665
666static inline int register_acpi_bus_type(void *bus) { return 0; }
667static inline int unregister_acpi_bus_type(void *bus) { return 0; }
668
669#endif
670
671#endif
672