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);
61 #include <linux/proc_fs.h>
63 #define ACPI_BUS_FILE_ROOT "acpi"
64 extern struct proc_dir_entry *acpi_root_dir;
66 enum acpi_bus_device_type {
67 ACPI_BUS_TYPE_DEVICE = 0,
69 ACPI_BUS_TYPE_PROCESSOR,
70 ACPI_BUS_TYPE_THERMAL,
71 ACPI_BUS_TYPE_POWER_BUTTON,
72 ACPI_BUS_TYPE_SLEEP_BUTTON,
73 ACPI_BUS_DEVICE_TYPE_COUNT
84 enum acpi_hotplug_mode {
90 struct acpi_hotplug_profile {
93 enum acpi_hotplug_mode mode;
96 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
99 return container_of(kobj, struct acpi_hotplug_profile, kobj);
102 struct acpi_scan_handler {
103 const struct acpi_device_id *ids;
104 struct list_head list_node;
105 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
106 void (*detach)(struct acpi_device *dev);
107 struct acpi_hotplug_profile hotplug;
115 typedef int (*acpi_op_add) (struct acpi_device * device);
116 typedef int (*acpi_op_remove) (struct acpi_device * device);
117 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
119 struct acpi_device_ops {
121 acpi_op_remove remove;
122 acpi_op_notify notify;
125 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
130 const struct acpi_device_id *ids; /* Supported Hardware IDs */
132 struct acpi_device_ops ops;
133 struct device_driver drv;
134 struct module *owner;
144 struct acpi_device_status {
149 u32 battery_present:1;
155 struct acpi_device_flags {
156 u32 dynamic_status:1;
159 u32 power_manageable:1;
167 struct acpi_device_dir {
168 struct proc_dir_entry *entry;
171 #define acpi_device_dir(d) ((d)->dir.entry)
175 typedef char acpi_bus_id[8];
176 typedef unsigned long acpi_bus_address;
177 typedef char acpi_device_name[40];
178 typedef char acpi_device_class[20];
180 struct acpi_hardware_id {
181 struct list_head list;
185 struct acpi_pnp_type {
191 struct acpi_device_pnp {
192 acpi_bus_id bus_id; /* Object name */
193 struct acpi_pnp_type type; /* ID type */
194 acpi_bus_address bus_address; /* _ADR */
195 char *unique_id; /* _UID */
196 struct list_head ids; /* _HID and _CIDs */
197 acpi_device_name device_name; /* Driver-determined */
198 acpi_device_class device_class; /* " */
199 union acpi_object *str_obj; /* unicode string for _STR method */
200 unsigned long sun; /* _SUN */
203 #define acpi_device_bid(d) ((d)->pnp.bus_id)
204 #define acpi_device_adr(d) ((d)->pnp.bus_address)
205 const char *acpi_device_hid(struct acpi_device *device);
206 #define acpi_device_name(d) ((d)->pnp.device_name)
207 #define acpi_device_class(d) ((d)->pnp.device_class)
209 /* Power Management */
211 struct acpi_device_power_flags {
212 u32 explicit_get:1; /* _PSC present? */
213 u32 power_resources:1; /* Power resources */
214 u32 inrush_current:1; /* Serialize Dx->D0 */
215 u32 power_removed:1; /* Optimize Dx->D0 */
219 struct acpi_device_power_state {
223 u8 explicit_set:1; /* _PSx present? */
226 int power; /* % Power (compared to D0) */
227 int latency; /* Dx->D0 time (microseconds) */
228 struct list_head resources; /* Power resources referenced */
231 struct acpi_device_power {
232 int state; /* Current state */
233 struct acpi_device_power_flags flags;
234 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
237 /* Performance Management */
239 struct acpi_device_perf_flags {
243 struct acpi_device_perf_state {
248 u8 power; /* % Power (compared to P0) */
249 u8 performance; /* % Performance ( " ) */
250 int latency; /* Px->P0 time (microseconds) */
253 struct acpi_device_perf {
255 struct acpi_device_perf_flags flags;
257 struct acpi_device_perf_state *states;
260 /* Wakeup Management */
261 struct acpi_device_wakeup_flags {
262 u8 valid:1; /* Can successfully enable wakeup? */
263 u8 run_wake:1; /* Run-Wake GPE devices */
264 u8 notifier_present:1; /* Wake-up notify handler has been installed */
267 struct acpi_device_wakeup {
268 acpi_handle gpe_device;
271 struct list_head resources;
272 struct acpi_device_wakeup_flags flags;
276 struct acpi_device_physical_node {
278 struct list_head node;
283 /* set maximum of physical nodes to 32 for expansibility */
284 #define ACPI_MAX_PHYSICAL_NODE 32
289 acpi_handle handle; /* no handle for fixed hardware */
290 struct acpi_device *parent;
291 struct list_head children;
292 struct list_head node;
293 struct list_head wakeup_list;
294 struct acpi_device_status status;
295 struct acpi_device_flags flags;
296 struct acpi_device_pnp pnp;
297 struct acpi_device_power power;
298 struct acpi_device_wakeup wakeup;
299 struct acpi_device_perf performance;
300 struct acpi_device_dir dir;
301 struct acpi_scan_handler *handler;
302 struct acpi_driver *driver;
305 u8 physical_node_count;
306 struct list_head physical_node_list;
307 struct mutex physical_node_lock;
308 DECLARE_BITMAP(physical_node_id_bitmap, ACPI_MAX_PHYSICAL_NODE);
309 struct list_head power_dependent;
310 void (*remove)(struct acpi_device *);
313 static inline void *acpi_driver_data(struct acpi_device *d)
315 return d->driver_data;
318 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
319 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
321 /* acpi_device.dev.bus == &acpi_bus_type */
322 extern struct bus_type acpi_bus_type;
329 struct acpi_bus_event {
330 struct list_head node;
331 acpi_device_class device_class;
337 struct acpi_eject_event {
338 struct acpi_device *device;
342 struct acpi_hp_work {
343 struct work_struct work;
348 void alloc_acpi_hp_work(acpi_handle handle, u32 type, void *context,
349 void (*func)(struct work_struct *work));
351 extern struct kobject *acpi_kobj;
352 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
353 void acpi_bus_private_data_handler(acpi_handle, void *);
354 int acpi_bus_get_private_data(acpi_handle, void **);
355 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
356 extern int register_acpi_notifier(struct notifier_block *);
357 extern int unregister_acpi_notifier(struct notifier_block *);
359 extern int register_acpi_bus_notifier(struct notifier_block *nb);
360 extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
365 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
366 void acpi_bus_data_handler(acpi_handle handle, void *context);
367 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
368 unsigned long long *sta);
369 int acpi_bus_get_status(struct acpi_device *device);
371 int acpi_bus_set_power(acpi_handle handle, int state);
372 const char *acpi_power_state_string(int state);
373 int acpi_device_get_power(struct acpi_device *device, int *state);
374 int acpi_device_set_power(struct acpi_device *device, int state);
375 int acpi_bus_init_power(struct acpi_device *device);
376 int acpi_device_fix_up_power(struct acpi_device *device);
377 int acpi_bus_update_power(acpi_handle handle, int *state_p);
378 bool acpi_bus_power_manageable(acpi_handle handle);
381 bool acpi_bus_can_wakeup(acpi_handle handle);
383 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
386 #ifdef CONFIG_ACPI_PROC_EVENT
387 int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
388 int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
389 int acpi_bus_receive_event(struct acpi_bus_event *event);
391 static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
395 void acpi_scan_lock_acquire(void);
396 void acpi_scan_lock_release(void);
397 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
398 int acpi_bus_register_driver(struct acpi_driver *driver);
399 void acpi_bus_unregister_driver(struct acpi_driver *driver);
400 int acpi_bus_scan(acpi_handle handle);
401 void acpi_bus_hot_remove_device(void *context);
402 void acpi_bus_trim(struct acpi_device *start);
403 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
404 int acpi_match_device_ids(struct acpi_device *device,
405 const struct acpi_device_id *ids);
406 int acpi_create_dir(struct acpi_device *);
407 void acpi_remove_dir(struct acpi_device *);
411 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
412 * @__acpi_driver: acpi_driver struct
414 * Helper macro for ACPI drivers which do not do anything special in module
415 * init/exit. This eliminates a lot of boilerplate. Each module may only
416 * use this macro once, and calling it replaces module_init() and module_exit()
418 #define module_acpi_driver(__acpi_driver) \
419 module_driver(__acpi_driver, acpi_bus_register_driver, \
420 acpi_bus_unregister_driver)
423 * Bind physical devices with ACPI devices
425 struct acpi_bus_type {
426 struct list_head list;
428 bool (*match)(struct device *dev);
429 int (*find_device) (struct device *, acpi_handle *);
430 void (*setup)(struct device *);
431 void (*cleanup)(struct device *);
433 int register_acpi_bus_type(struct acpi_bus_type *);
434 int unregister_acpi_bus_type(struct acpi_bus_type *);
436 struct acpi_pci_root {
437 struct acpi_device * device;
440 struct resource secondary; /* downstream bus range */
442 u32 osc_support_set; /* _OSC state of support bits */
443 u32 osc_control_set; /* _OSC state of control bits */
444 phys_addr_t mcfg_addr;
448 acpi_handle acpi_get_child(acpi_handle, u64);
449 int acpi_is_root_bridge(acpi_handle);
450 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
451 #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)ACPI_HANDLE(dev))
453 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
454 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
457 acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
458 acpi_notify_handler handler, void *context);
459 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
460 acpi_notify_handler handler);
461 int acpi_pm_device_sleep_state(struct device *, int *, int);
462 void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);
463 void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);
465 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
466 acpi_notify_handler handler,
471 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
472 acpi_notify_handler handler)
476 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
481 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0;
483 static inline void acpi_dev_pm_add_dependent(acpi_handle handle,
484 struct device *depdev) {}
485 static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,
486 struct device *depdev) {}
489 #ifdef CONFIG_PM_RUNTIME
490 int __acpi_device_run_wake(struct acpi_device *, bool);
491 int acpi_pm_device_run_wake(struct device *, bool);
493 static inline int __acpi_device_run_wake(struct acpi_device *adev, bool en)
497 static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
503 #ifdef CONFIG_PM_SLEEP
504 int __acpi_device_sleep_wake(struct acpi_device *, u32, bool);
505 int acpi_pm_device_sleep_wake(struct device *, bool);
507 static inline int __acpi_device_sleep_wake(struct acpi_device *adev,
508 u32 target_state, bool enable)
512 static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
518 #ifdef CONFIG_ACPI_SLEEP
519 u32 acpi_target_system_state(void);
521 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
524 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
526 return adev->flags.power_manageable;
529 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
531 return adev->wakeup.flags.valid;
534 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
536 return adev->power.states[ACPI_STATE_D3_COLD].flags.os_accessible;
539 #else /* CONFIG_ACPI */
541 static inline int register_acpi_bus_type(void *bus) { return 0; }
542 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
544 #endif /* CONFIG_ACPI */
546 #endif /*__ACPI_BUS_H__*/