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_removal_type {
67 ACPI_BUS_REMOVAL_NORMAL = 0,
68 ACPI_BUS_REMOVAL_EJECT,
69 ACPI_BUS_REMOVAL_SUPRISE,
70 ACPI_BUS_REMOVAL_TYPE_COUNT
73 enum acpi_bus_device_type {
74 ACPI_BUS_TYPE_DEVICE = 0,
76 ACPI_BUS_TYPE_PROCESSOR,
77 ACPI_BUS_TYPE_THERMAL,
78 ACPI_BUS_TYPE_POWER_BUTTON,
79 ACPI_BUS_TYPE_SLEEP_BUTTON,
80 ACPI_BUS_DEVICE_TYPE_COUNT
91 enum acpi_hotplug_mode {
97 struct acpi_hotplug_profile {
100 enum acpi_hotplug_mode mode;
103 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
104 struct kobject *kobj)
106 return container_of(kobj, struct acpi_hotplug_profile, kobj);
109 struct acpi_scan_handler {
110 const struct acpi_device_id *ids;
111 struct list_head list_node;
112 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
113 void (*detach)(struct acpi_device *dev);
114 struct acpi_hotplug_profile hotplug;
122 typedef int (*acpi_op_add) (struct acpi_device * device);
123 typedef int (*acpi_op_remove) (struct acpi_device * device);
124 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
126 struct acpi_device_ops {
128 acpi_op_remove remove;
129 acpi_op_notify notify;
132 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
137 const struct acpi_device_id *ids; /* Supported Hardware IDs */
139 struct acpi_device_ops ops;
140 struct device_driver drv;
141 struct module *owner;
151 struct acpi_device_status {
156 u32 battery_present:1;
162 struct acpi_device_flags {
163 u32 dynamic_status:1;
166 u32 suprise_removal_ok:1;
167 u32 power_manageable:1;
168 u32 performance_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 {
287 struct list_head node;
291 /* set maximum of physical nodes to 32 for expansibility */
292 #define ACPI_MAX_PHYSICAL_NODE 32
297 acpi_handle handle; /* no handle for fixed hardware */
298 struct acpi_device *parent;
299 struct list_head children;
300 struct list_head node;
301 struct list_head wakeup_list;
302 struct acpi_device_status status;
303 struct acpi_device_flags flags;
304 struct acpi_device_pnp pnp;
305 struct acpi_device_power power;
306 struct acpi_device_wakeup wakeup;
307 struct acpi_device_perf performance;
308 struct acpi_device_dir dir;
309 struct acpi_scan_handler *handler;
310 struct acpi_driver *driver;
313 enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
314 u8 physical_node_count;
315 struct list_head physical_node_list;
316 struct mutex physical_node_lock;
317 DECLARE_BITMAP(physical_node_id_bitmap, ACPI_MAX_PHYSICAL_NODE);
318 struct list_head power_dependent;
319 void (*remove)(struct acpi_device *);
322 static inline void *acpi_driver_data(struct acpi_device *d)
324 return d->driver_data;
327 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
328 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
330 /* acpi_device.dev.bus == &acpi_bus_type */
331 extern struct bus_type acpi_bus_type;
338 struct acpi_bus_event {
339 struct list_head node;
340 acpi_device_class device_class;
346 struct acpi_eject_event {
347 struct acpi_device *device;
351 struct acpi_hp_work {
352 struct work_struct work;
357 void alloc_acpi_hp_work(acpi_handle handle, u32 type, void *context,
358 void (*func)(struct work_struct *work));
360 extern struct kobject *acpi_kobj;
361 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
362 void acpi_bus_private_data_handler(acpi_handle, void *);
363 int acpi_bus_get_private_data(acpi_handle, void **);
364 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
365 extern int register_acpi_notifier(struct notifier_block *);
366 extern int unregister_acpi_notifier(struct notifier_block *);
368 extern int register_acpi_bus_notifier(struct notifier_block *nb);
369 extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
374 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
375 void acpi_bus_data_handler(acpi_handle handle, void *context);
376 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
377 unsigned long long *sta);
378 int acpi_bus_get_status(struct acpi_device *device);
380 int acpi_bus_set_power(acpi_handle handle, int state);
381 const char *acpi_power_state_string(int state);
382 int acpi_device_get_power(struct acpi_device *device, int *state);
383 int acpi_device_set_power(struct acpi_device *device, int state);
384 int acpi_bus_init_power(struct acpi_device *device);
385 int acpi_bus_update_power(acpi_handle handle, int *state_p);
386 bool acpi_bus_power_manageable(acpi_handle handle);
389 bool acpi_bus_can_wakeup(acpi_handle handle);
391 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
394 #ifdef CONFIG_ACPI_PROC_EVENT
395 int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
396 int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
397 int acpi_bus_receive_event(struct acpi_bus_event *event);
399 static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
403 void acpi_scan_lock_acquire(void);
404 void acpi_scan_lock_release(void);
405 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
406 int acpi_bus_register_driver(struct acpi_driver *driver);
407 void acpi_bus_unregister_driver(struct acpi_driver *driver);
408 int acpi_bus_scan(acpi_handle handle);
409 void acpi_bus_hot_remove_device(void *context);
410 void acpi_bus_trim(struct acpi_device *start);
411 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
412 int acpi_match_device_ids(struct acpi_device *device,
413 const struct acpi_device_id *ids);
414 int acpi_create_dir(struct acpi_device *);
415 void acpi_remove_dir(struct acpi_device *);
419 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
420 * @__acpi_driver: acpi_driver struct
422 * Helper macro for ACPI drivers which do not do anything special in module
423 * init/exit. This eliminates a lot of boilerplate. Each module may only
424 * use this macro once, and calling it replaces module_init() and module_exit()
426 #define module_acpi_driver(__acpi_driver) \
427 module_driver(__acpi_driver, acpi_bus_register_driver, \
428 acpi_bus_unregister_driver)
431 * Bind physical devices with ACPI devices
433 struct acpi_bus_type {
434 struct list_head list;
436 bool (*match)(struct device *dev);
437 int (*find_device) (struct device *, acpi_handle *);
438 void (*setup)(struct device *);
439 void (*cleanup)(struct device *);
441 int register_acpi_bus_type(struct acpi_bus_type *);
442 int unregister_acpi_bus_type(struct acpi_bus_type *);
444 struct acpi_pci_root {
445 struct list_head node;
446 struct acpi_device * device;
449 struct resource secondary; /* downstream bus range */
451 u32 osc_support_set; /* _OSC state of support bits */
452 u32 osc_control_set; /* _OSC state of control bits */
453 phys_addr_t mcfg_addr;
457 acpi_handle acpi_get_child(acpi_handle, u64);
458 int acpi_is_root_bridge(acpi_handle);
459 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
460 #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)ACPI_HANDLE(dev))
462 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
463 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
466 acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
467 acpi_notify_handler handler, void *context);
468 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
469 acpi_notify_handler handler);
470 int acpi_device_power_state(struct device *dev, struct acpi_device *adev,
471 u32 target_state, int d_max_in, int *d_min_p);
472 int acpi_pm_device_sleep_state(struct device *, int *, int);
473 void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);
474 void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);
476 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
477 acpi_notify_handler handler,
482 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
483 acpi_notify_handler handler)
487 static inline int __acpi_device_power_state(int m, int *p)
491 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0;
493 static inline int acpi_device_power_state(struct device *dev,
494 struct acpi_device *adev,
495 u32 target_state, int d_max_in,
498 return __acpi_device_power_state(d_max_in, d_min_p);
500 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
502 return __acpi_device_power_state(m, p);
504 static inline void acpi_dev_pm_add_dependent(acpi_handle handle,
505 struct device *depdev) {}
506 static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,
507 struct device *depdev) {}
510 #ifdef CONFIG_PM_RUNTIME
511 int __acpi_device_run_wake(struct acpi_device *, bool);
512 int acpi_pm_device_run_wake(struct device *, bool);
514 static inline int __acpi_device_run_wake(struct acpi_device *adev, bool en)
518 static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
524 #ifdef CONFIG_PM_SLEEP
525 int __acpi_device_sleep_wake(struct acpi_device *, u32, bool);
526 int acpi_pm_device_sleep_wake(struct device *, bool);
528 static inline int __acpi_device_sleep_wake(struct acpi_device *adev,
529 u32 target_state, bool enable)
533 static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
539 #ifdef CONFIG_ACPI_SLEEP
540 u32 acpi_target_system_state(void);
542 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
545 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
547 return adev->flags.power_manageable;
550 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
552 return adev->wakeup.flags.valid;
555 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
557 return adev->power.states[ACPI_STATE_D3_COLD].flags.os_accessible;
560 #else /* CONFIG_ACPI */
562 static inline int register_acpi_bus_type(void *bus) { return 0; }
563 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
565 #endif /* CONFIG_ACPI */
567 #endif /*__ACPI_BUS_H__*/