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);
64 #include <linux/proc_fs.h>
66 #define ACPI_BUS_FILE_ROOT "acpi"
67 extern struct proc_dir_entry *acpi_root_dir;
69 enum acpi_bus_device_type {
70 ACPI_BUS_TYPE_DEVICE = 0,
72 ACPI_BUS_TYPE_PROCESSOR,
73 ACPI_BUS_TYPE_THERMAL,
74 ACPI_BUS_TYPE_POWER_BUTTON,
75 ACPI_BUS_TYPE_SLEEP_BUTTON,
76 ACPI_BUS_DEVICE_TYPE_COUNT
87 enum acpi_hotplug_mode {
93 struct acpi_hotplug_profile {
96 enum acpi_hotplug_mode mode;
99 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
100 struct kobject *kobj)
102 return container_of(kobj, struct acpi_hotplug_profile, kobj);
105 struct acpi_scan_handler {
106 const struct acpi_device_id *ids;
107 struct list_head list_node;
108 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
109 void (*detach)(struct acpi_device *dev);
110 struct acpi_hotplug_profile hotplug;
118 typedef int (*acpi_op_add) (struct acpi_device * device);
119 typedef int (*acpi_op_remove) (struct acpi_device * device);
120 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
122 struct acpi_device_ops {
124 acpi_op_remove remove;
125 acpi_op_notify notify;
128 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
133 const struct acpi_device_id *ids; /* Supported Hardware IDs */
135 struct acpi_device_ops ops;
136 struct device_driver drv;
137 struct module *owner;
147 struct acpi_device_status {
152 u32 battery_present:1;
158 struct acpi_device_flags {
159 u32 dynamic_status:1;
162 u32 power_manageable:1;
170 struct acpi_device_dir {
171 struct proc_dir_entry *entry;
174 #define acpi_device_dir(d) ((d)->dir.entry)
178 typedef char acpi_bus_id[8];
179 typedef unsigned long acpi_bus_address;
180 typedef char acpi_device_name[40];
181 typedef char acpi_device_class[20];
183 struct acpi_hardware_id {
184 struct list_head list;
188 struct acpi_pnp_type {
194 struct acpi_device_pnp {
195 acpi_bus_id bus_id; /* Object name */
196 struct acpi_pnp_type type; /* ID type */
197 acpi_bus_address bus_address; /* _ADR */
198 char *unique_id; /* _UID */
199 struct list_head ids; /* _HID and _CIDs */
200 acpi_device_name device_name; /* Driver-determined */
201 acpi_device_class device_class; /* " */
202 union acpi_object *str_obj; /* unicode string for _STR method */
203 unsigned long sun; /* _SUN */
206 #define acpi_device_bid(d) ((d)->pnp.bus_id)
207 #define acpi_device_adr(d) ((d)->pnp.bus_address)
208 const char *acpi_device_hid(struct acpi_device *device);
209 #define acpi_device_name(d) ((d)->pnp.device_name)
210 #define acpi_device_class(d) ((d)->pnp.device_class)
212 /* Power Management */
214 struct acpi_device_power_flags {
215 u32 explicit_get:1; /* _PSC present? */
216 u32 power_resources:1; /* Power resources */
217 u32 inrush_current:1; /* Serialize Dx->D0 */
218 u32 power_removed:1; /* Optimize Dx->D0 */
222 struct acpi_device_power_state {
226 u8 explicit_set:1; /* _PSx present? */
229 int power; /* % Power (compared to D0) */
230 int latency; /* Dx->D0 time (microseconds) */
231 struct list_head resources; /* Power resources referenced */
234 struct acpi_device_power {
235 int state; /* Current state */
236 struct acpi_device_power_flags flags;
237 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
240 /* Performance Management */
242 struct acpi_device_perf_flags {
246 struct acpi_device_perf_state {
251 u8 power; /* % Power (compared to P0) */
252 u8 performance; /* % Performance ( " ) */
253 int latency; /* Px->P0 time (microseconds) */
256 struct acpi_device_perf {
258 struct acpi_device_perf_flags flags;
260 struct acpi_device_perf_state *states;
263 /* Wakeup Management */
264 struct acpi_device_wakeup_flags {
265 u8 valid:1; /* Can successfully enable wakeup? */
266 u8 run_wake:1; /* Run-Wake GPE devices */
267 u8 notifier_present:1; /* Wake-up notify handler has been installed */
270 struct acpi_device_wakeup {
271 acpi_handle gpe_device;
274 struct list_head resources;
275 struct acpi_device_wakeup_flags flags;
279 struct acpi_device_physical_node {
281 struct list_head node;
286 /* set maximum of physical nodes to 32 for expansibility */
287 #define ACPI_MAX_PHYSICAL_NODE 32
292 acpi_handle handle; /* no handle for fixed hardware */
293 struct acpi_device *parent;
294 struct list_head children;
295 struct list_head node;
296 struct list_head wakeup_list;
297 struct acpi_device_status status;
298 struct acpi_device_flags flags;
299 struct acpi_device_pnp pnp;
300 struct acpi_device_power power;
301 struct acpi_device_wakeup wakeup;
302 struct acpi_device_perf performance;
303 struct acpi_device_dir dir;
304 struct acpi_scan_handler *handler;
305 struct acpi_driver *driver;
308 u8 physical_node_count;
309 struct list_head physical_node_list;
310 struct mutex physical_node_lock;
311 DECLARE_BITMAP(physical_node_id_bitmap, ACPI_MAX_PHYSICAL_NODE);
312 struct list_head power_dependent;
313 void (*remove)(struct acpi_device *);
316 static inline void *acpi_driver_data(struct acpi_device *d)
318 return d->driver_data;
321 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
322 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
324 /* acpi_device.dev.bus == &acpi_bus_type */
325 extern struct bus_type acpi_bus_type;
332 struct acpi_bus_event {
333 struct list_head node;
334 acpi_device_class device_class;
340 struct acpi_eject_event {
341 struct acpi_device *device;
345 struct acpi_hp_work {
346 struct work_struct work;
351 void alloc_acpi_hp_work(acpi_handle handle, u32 type, void *context,
352 void (*func)(struct work_struct *work));
354 extern struct kobject *acpi_kobj;
355 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
356 void acpi_bus_private_data_handler(acpi_handle, void *);
357 int acpi_bus_get_private_data(acpi_handle, void **);
358 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
359 extern int register_acpi_notifier(struct notifier_block *);
360 extern int unregister_acpi_notifier(struct notifier_block *);
362 extern int register_acpi_bus_notifier(struct notifier_block *nb);
363 extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
368 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
369 void acpi_bus_data_handler(acpi_handle handle, void *context);
370 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
371 unsigned long long *sta);
372 int acpi_bus_get_status(struct acpi_device *device);
374 int acpi_bus_set_power(acpi_handle handle, int state);
375 const char *acpi_power_state_string(int state);
376 int acpi_device_get_power(struct acpi_device *device, int *state);
377 int acpi_device_set_power(struct acpi_device *device, int state);
378 int acpi_bus_init_power(struct acpi_device *device);
379 int acpi_device_fix_up_power(struct acpi_device *device);
380 int acpi_bus_update_power(acpi_handle handle, int *state_p);
381 bool acpi_bus_power_manageable(acpi_handle handle);
384 bool acpi_bus_can_wakeup(acpi_handle handle);
386 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
389 #ifdef CONFIG_ACPI_PROC_EVENT
390 int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
391 int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
392 int acpi_bus_receive_event(struct acpi_bus_event *event);
394 static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
398 void acpi_scan_lock_acquire(void);
399 void acpi_scan_lock_release(void);
400 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
401 int acpi_bus_register_driver(struct acpi_driver *driver);
402 void acpi_bus_unregister_driver(struct acpi_driver *driver);
403 int acpi_bus_scan(acpi_handle handle);
404 void acpi_bus_hot_remove_device(void *context);
405 void acpi_bus_trim(struct acpi_device *start);
406 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
407 int acpi_match_device_ids(struct acpi_device *device,
408 const struct acpi_device_id *ids);
409 int acpi_create_dir(struct acpi_device *);
410 void acpi_remove_dir(struct acpi_device *);
414 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
415 * @__acpi_driver: acpi_driver struct
417 * Helper macro for ACPI drivers which do not do anything special in module
418 * init/exit. This eliminates a lot of boilerplate. Each module may only
419 * use this macro once, and calling it replaces module_init() and module_exit()
421 #define module_acpi_driver(__acpi_driver) \
422 module_driver(__acpi_driver, acpi_bus_register_driver, \
423 acpi_bus_unregister_driver)
426 * Bind physical devices with ACPI devices
428 struct acpi_bus_type {
429 struct list_head list;
431 bool (*match)(struct device *dev);
432 int (*find_device) (struct device *, acpi_handle *);
433 void (*setup)(struct device *);
434 void (*cleanup)(struct device *);
436 int register_acpi_bus_type(struct acpi_bus_type *);
437 int unregister_acpi_bus_type(struct acpi_bus_type *);
439 struct acpi_pci_root {
440 struct acpi_device * device;
443 struct resource secondary; /* downstream bus range */
445 u32 osc_support_set; /* _OSC state of support bits */
446 u32 osc_control_set; /* _OSC state of control bits */
447 phys_addr_t mcfg_addr;
451 acpi_handle acpi_get_child(acpi_handle, u64);
452 int acpi_is_root_bridge(acpi_handle);
453 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
454 #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)ACPI_HANDLE(dev))
456 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
457 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
460 acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
461 acpi_notify_handler handler, void *context);
462 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
463 acpi_notify_handler handler);
464 int acpi_pm_device_sleep_state(struct device *, int *, int);
465 void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);
466 void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);
468 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
469 acpi_notify_handler handler,
474 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
475 acpi_notify_handler handler)
479 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
484 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0;
486 static inline void acpi_dev_pm_add_dependent(acpi_handle handle,
487 struct device *depdev) {}
488 static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,
489 struct device *depdev) {}
492 #ifdef CONFIG_PM_RUNTIME
493 int __acpi_device_run_wake(struct acpi_device *, bool);
494 int acpi_pm_device_run_wake(struct device *, bool);
496 static inline int __acpi_device_run_wake(struct acpi_device *adev, bool en)
500 static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
506 #ifdef CONFIG_PM_SLEEP
507 int __acpi_device_sleep_wake(struct acpi_device *, u32, bool);
508 int acpi_pm_device_sleep_wake(struct device *, bool);
510 static inline int __acpi_device_sleep_wake(struct acpi_device *adev,
511 u32 target_state, bool enable)
515 static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
521 #ifdef CONFIG_ACPI_SLEEP
522 u32 acpi_target_system_state(void);
524 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
527 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
529 return adev->flags.power_manageable;
532 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
534 return adev->wakeup.flags.valid;
537 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
539 return adev->power.states[ACPI_STATE_D3_COLD].flags.os_accessible;
542 #else /* CONFIG_ACPI */
544 static inline int register_acpi_bus_type(void *bus) { return 0; }
545 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
547 #endif /* CONFIG_ACPI */
549 #endif /*__ACPI_BUS_H__*/