2 * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
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.
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #ifndef __ACPI_BUS_H__
27 #define __ACPI_BUS_H__
29 #include <linux/device.h>
31 #include <acpi/acpi.h>
33 /* TBD: Make dynamic */
34 #define ACPI_MAX_HANDLES 10
35 struct acpi_handle_list {
37 acpi_handle handles[ACPI_MAX_HANDLES];
42 acpi_extract_package(union acpi_object *package,
43 struct acpi_buffer *format, struct acpi_buffer *buffer);
45 acpi_evaluate_integer(acpi_handle handle,
47 struct acpi_object_list *arguments, unsigned long long *data);
49 acpi_evaluate_reference(acpi_handle handle,
51 struct acpi_object_list *arguments,
52 struct acpi_handle_list *list);
54 acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event,
55 u32 status_code, struct acpi_buffer *status_buf);
58 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
60 bool acpi_has_method(acpi_handle handle, char *name);
61 acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
63 acpi_status acpi_evaluate_ej0(acpi_handle handle);
64 acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
65 bool acpi_ata_match(acpi_handle handle);
66 bool acpi_bay_match(acpi_handle handle);
67 bool acpi_dock_match(acpi_handle handle);
71 #include <linux/proc_fs.h>
73 #define ACPI_BUS_FILE_ROOT "acpi"
74 extern struct proc_dir_entry *acpi_root_dir;
76 enum acpi_bus_device_type {
77 ACPI_BUS_TYPE_DEVICE = 0,
79 ACPI_BUS_TYPE_PROCESSOR,
80 ACPI_BUS_TYPE_THERMAL,
81 ACPI_BUS_TYPE_POWER_BUTTON,
82 ACPI_BUS_TYPE_SLEEP_BUTTON,
83 ACPI_BUS_DEVICE_TYPE_COUNT
94 enum acpi_hotplug_mode {
100 struct acpi_hotplug_profile {
103 enum acpi_hotplug_mode mode;
106 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
107 struct kobject *kobj)
109 return container_of(kobj, struct acpi_hotplug_profile, kobj);
112 struct acpi_scan_handler {
113 const struct acpi_device_id *ids;
114 struct list_head list_node;
115 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
116 void (*detach)(struct acpi_device *dev);
117 struct acpi_hotplug_profile hotplug;
125 typedef int (*acpi_op_add) (struct acpi_device * device);
126 typedef int (*acpi_op_remove) (struct acpi_device * device);
127 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
129 struct acpi_device_ops {
131 acpi_op_remove remove;
132 acpi_op_notify notify;
135 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
140 const struct acpi_device_id *ids; /* Supported Hardware IDs */
142 struct acpi_device_ops ops;
143 struct device_driver drv;
144 struct module *owner;
154 struct acpi_device_status {
159 u32 battery_present:1;
165 struct acpi_device_flags {
166 u32 dynamic_status:1;
169 u32 power_manageable:1;
176 struct acpi_device_dir {
177 struct proc_dir_entry *entry;
180 #define acpi_device_dir(d) ((d)->dir.entry)
184 typedef char acpi_bus_id[8];
185 typedef unsigned long acpi_bus_address;
186 typedef char acpi_device_name[40];
187 typedef char acpi_device_class[20];
189 struct acpi_hardware_id {
190 struct list_head list;
194 struct acpi_pnp_type {
200 struct acpi_device_pnp {
201 acpi_bus_id bus_id; /* Object name */
202 struct acpi_pnp_type type; /* ID type */
203 acpi_bus_address bus_address; /* _ADR */
204 char *unique_id; /* _UID */
205 struct list_head ids; /* _HID and _CIDs */
206 acpi_device_name device_name; /* Driver-determined */
207 acpi_device_class device_class; /* " */
208 union acpi_object *str_obj; /* unicode string for _STR method */
209 unsigned long sun; /* _SUN */
212 #define acpi_device_bid(d) ((d)->pnp.bus_id)
213 #define acpi_device_adr(d) ((d)->pnp.bus_address)
214 const char *acpi_device_hid(struct acpi_device *device);
215 #define acpi_device_name(d) ((d)->pnp.device_name)
216 #define acpi_device_class(d) ((d)->pnp.device_class)
218 /* Power Management */
220 struct acpi_device_power_flags {
221 u32 explicit_get:1; /* _PSC present? */
222 u32 power_resources:1; /* Power resources */
223 u32 inrush_current:1; /* Serialize Dx->D0 */
224 u32 power_removed:1; /* Optimize Dx->D0 */
228 struct acpi_device_power_state {
232 u8 explicit_set:1; /* _PSx present? */
235 int power; /* % Power (compared to D0) */
236 int latency; /* Dx->D0 time (microseconds) */
237 struct list_head resources; /* Power resources referenced */
240 struct acpi_device_power {
241 int state; /* Current state */
242 struct acpi_device_power_flags flags;
243 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
246 /* Performance Management */
248 struct acpi_device_perf_flags {
252 struct acpi_device_perf_state {
257 u8 power; /* % Power (compared to P0) */
258 u8 performance; /* % Performance ( " ) */
259 int latency; /* Px->P0 time (microseconds) */
262 struct acpi_device_perf {
264 struct acpi_device_perf_flags flags;
266 struct acpi_device_perf_state *states;
269 /* Wakeup Management */
270 struct acpi_device_wakeup_flags {
271 u8 valid:1; /* Can successfully enable wakeup? */
272 u8 run_wake:1; /* Run-Wake GPE devices */
273 u8 notifier_present:1; /* Wake-up notify handler has been installed */
276 struct acpi_device_wakeup {
277 acpi_handle gpe_device;
280 struct list_head resources;
281 struct acpi_device_wakeup_flags flags;
285 struct acpi_device_physical_node {
286 unsigned int node_id;
287 struct list_head node;
295 acpi_handle handle; /* no handle for fixed hardware */
296 struct acpi_device *parent;
297 struct list_head children;
298 struct list_head node;
299 struct list_head wakeup_list;
300 struct acpi_device_status status;
301 struct acpi_device_flags flags;
302 struct acpi_device_pnp pnp;
303 struct acpi_device_power power;
304 struct acpi_device_wakeup wakeup;
305 struct acpi_device_perf performance;
306 struct acpi_device_dir dir;
307 struct acpi_scan_handler *handler;
308 struct acpi_driver *driver;
311 unsigned int physical_node_count;
312 struct list_head physical_node_list;
313 struct mutex physical_node_lock;
314 struct list_head power_dependent;
315 void (*remove)(struct acpi_device *);
318 static inline void *acpi_driver_data(struct acpi_device *d)
320 return d->driver_data;
323 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
324 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
326 /* acpi_device.dev.bus == &acpi_bus_type */
327 extern struct bus_type acpi_bus_type;
334 struct acpi_bus_event {
335 struct list_head node;
336 acpi_device_class device_class;
342 struct acpi_eject_event {
343 struct acpi_device *device;
347 struct acpi_hp_work {
348 struct work_struct work;
353 void alloc_acpi_hp_work(acpi_handle handle, u32 type, void *context,
354 void (*func)(struct work_struct *work));
356 extern struct kobject *acpi_kobj;
357 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
358 void acpi_bus_private_data_handler(acpi_handle, void *);
359 int acpi_bus_get_private_data(acpi_handle, void **);
360 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
361 extern int register_acpi_notifier(struct notifier_block *);
362 extern int unregister_acpi_notifier(struct notifier_block *);
368 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
369 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
370 unsigned long long *sta);
371 int acpi_bus_get_status(struct acpi_device *device);
373 int acpi_bus_set_power(acpi_handle handle, int state);
374 const char *acpi_power_state_string(int state);
375 int acpi_device_get_power(struct acpi_device *device, int *state);
376 int acpi_device_set_power(struct acpi_device *device, int state);
377 int acpi_bus_init_power(struct acpi_device *device);
378 int acpi_device_fix_up_power(struct acpi_device *device);
379 int acpi_bus_update_power(acpi_handle handle, int *state_p);
380 bool acpi_bus_power_manageable(acpi_handle handle);
383 bool acpi_bus_can_wakeup(acpi_handle handle);
385 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
388 void acpi_scan_lock_acquire(void);
389 void acpi_scan_lock_release(void);
390 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
391 int acpi_bus_register_driver(struct acpi_driver *driver);
392 void acpi_bus_unregister_driver(struct acpi_driver *driver);
393 int acpi_bus_scan(acpi_handle handle);
394 void acpi_bus_hot_remove_device(void *context);
395 void acpi_bus_trim(struct acpi_device *start);
396 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
397 int acpi_match_device_ids(struct acpi_device *device,
398 const struct acpi_device_id *ids);
399 int acpi_create_dir(struct acpi_device *);
400 void acpi_remove_dir(struct acpi_device *);
404 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
405 * @__acpi_driver: acpi_driver struct
407 * Helper macro for ACPI drivers which do not do anything special in module
408 * init/exit. This eliminates a lot of boilerplate. Each module may only
409 * use this macro once, and calling it replaces module_init() and module_exit()
411 #define module_acpi_driver(__acpi_driver) \
412 module_driver(__acpi_driver, acpi_bus_register_driver, \
413 acpi_bus_unregister_driver)
416 * Bind physical devices with ACPI devices
418 struct acpi_bus_type {
419 struct list_head list;
421 bool (*match)(struct device *dev);
422 int (*find_device) (struct device *, acpi_handle *);
423 void (*setup)(struct device *);
424 void (*cleanup)(struct device *);
426 int register_acpi_bus_type(struct acpi_bus_type *);
427 int unregister_acpi_bus_type(struct acpi_bus_type *);
429 struct acpi_pci_root {
430 struct acpi_device * device;
433 struct resource secondary; /* downstream bus range */
435 u32 osc_support_set; /* _OSC state of support bits */
436 u32 osc_control_set; /* _OSC state of control bits */
437 phys_addr_t mcfg_addr;
441 acpi_handle acpi_find_child(acpi_handle, u64, bool);
442 static inline acpi_handle acpi_get_child(acpi_handle handle, u64 addr)
444 return acpi_find_child(handle, addr, false);
446 int acpi_is_root_bridge(acpi_handle);
447 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
448 #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)ACPI_HANDLE(dev))
450 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
451 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
454 acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
455 acpi_notify_handler handler, void *context);
456 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
457 acpi_notify_handler handler);
458 int acpi_pm_device_sleep_state(struct device *, int *, int);
459 void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);
460 void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);
462 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
463 acpi_notify_handler handler,
468 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
469 acpi_notify_handler handler)
473 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
478 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
481 static inline void acpi_dev_pm_add_dependent(acpi_handle handle,
482 struct device *depdev) {}
483 static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,
484 struct device *depdev) {}
487 #ifdef CONFIG_PM_RUNTIME
488 int __acpi_device_run_wake(struct acpi_device *, bool);
489 int acpi_pm_device_run_wake(struct device *, bool);
491 static inline int __acpi_device_run_wake(struct acpi_device *adev, bool en)
495 static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
501 #ifdef CONFIG_PM_SLEEP
502 int __acpi_device_sleep_wake(struct acpi_device *, u32, bool);
503 int acpi_pm_device_sleep_wake(struct device *, bool);
505 static inline int __acpi_device_sleep_wake(struct acpi_device *adev,
506 u32 target_state, bool enable)
510 static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
516 #ifdef CONFIG_ACPI_SLEEP
517 u32 acpi_target_system_state(void);
519 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
522 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
524 return adev->flags.power_manageable;
527 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
529 return adev->wakeup.flags.valid;
532 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
534 return adev->power.states[ACPI_STATE_D3_COLD].flags.os_accessible;
537 #else /* CONFIG_ACPI */
539 static inline int register_acpi_bus_type(void *bus) { return 0; }
540 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
542 #endif /* CONFIG_ACPI */
544 #endif /*__ACPI_BUS_H__*/