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 {
101 enum acpi_hotplug_mode mode;
104 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
105 struct kobject *kobj)
107 return container_of(kobj, struct acpi_hotplug_profile, kobj);
110 struct acpi_scan_handler {
111 const struct acpi_device_id *ids;
112 struct list_head list_node;
113 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
114 void (*detach)(struct acpi_device *dev);
115 struct acpi_hotplug_profile hotplug;
123 typedef int (*acpi_op_add) (struct acpi_device * device);
124 typedef int (*acpi_op_remove) (struct acpi_device * device);
125 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
127 struct acpi_device_ops {
129 acpi_op_remove remove;
130 acpi_op_notify notify;
133 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
138 const struct acpi_device_id *ids; /* Supported Hardware IDs */
140 struct acpi_device_ops ops;
141 struct device_driver drv;
142 struct module *owner;
152 struct acpi_device_status {
157 u32 battery_present:1;
163 struct acpi_device_flags {
164 u32 dynamic_status:1;
167 u32 suprise_removal_ok:1;
168 u32 power_manageable:1;
169 u32 performance_manageable:1;
177 struct acpi_device_dir {
178 struct proc_dir_entry *entry;
181 #define acpi_device_dir(d) ((d)->dir.entry)
185 typedef char acpi_bus_id[8];
186 typedef unsigned long acpi_bus_address;
187 typedef char acpi_device_name[40];
188 typedef char acpi_device_class[20];
190 struct acpi_hardware_id {
191 struct list_head list;
195 struct acpi_pnp_type {
201 struct acpi_device_pnp {
202 acpi_bus_id bus_id; /* Object name */
203 struct acpi_pnp_type type; /* ID type */
204 acpi_bus_address bus_address; /* _ADR */
205 char *unique_id; /* _UID */
206 struct list_head ids; /* _HID and _CIDs */
207 acpi_device_name device_name; /* Driver-determined */
208 acpi_device_class device_class; /* " */
209 union acpi_object *str_obj; /* unicode string for _STR method */
210 unsigned long sun; /* _SUN */
213 #define acpi_device_bid(d) ((d)->pnp.bus_id)
214 #define acpi_device_adr(d) ((d)->pnp.bus_address)
215 const char *acpi_device_hid(struct acpi_device *device);
216 #define acpi_device_name(d) ((d)->pnp.device_name)
217 #define acpi_device_class(d) ((d)->pnp.device_class)
219 /* Power Management */
221 struct acpi_device_power_flags {
222 u32 explicit_get:1; /* _PSC present? */
223 u32 power_resources:1; /* Power resources */
224 u32 inrush_current:1; /* Serialize Dx->D0 */
225 u32 power_removed:1; /* Optimize Dx->D0 */
229 struct acpi_device_power_state {
233 u8 explicit_set:1; /* _PSx present? */
236 int power; /* % Power (compared to D0) */
237 int latency; /* Dx->D0 time (microseconds) */
238 struct list_head resources; /* Power resources referenced */
241 struct acpi_device_power {
242 int state; /* Current state */
243 struct acpi_device_power_flags flags;
244 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
247 /* Performance Management */
249 struct acpi_device_perf_flags {
253 struct acpi_device_perf_state {
258 u8 power; /* % Power (compared to P0) */
259 u8 performance; /* % Performance ( " ) */
260 int latency; /* Px->P0 time (microseconds) */
263 struct acpi_device_perf {
265 struct acpi_device_perf_flags flags;
267 struct acpi_device_perf_state *states;
270 /* Wakeup Management */
271 struct acpi_device_wakeup_flags {
272 u8 valid:1; /* Can successfully enable wakeup? */
273 u8 run_wake:1; /* Run-Wake GPE devices */
274 u8 notifier_present:1; /* Wake-up notify handler has been installed */
277 struct acpi_device_wakeup {
278 acpi_handle gpe_device;
281 struct list_head resources;
282 struct acpi_device_wakeup_flags flags;
286 struct acpi_device_physical_node {
288 struct list_head node;
292 /* set maximum of physical nodes to 32 for expansibility */
293 #define ACPI_MAX_PHYSICAL_NODE 32
298 acpi_handle handle; /* no handle for fixed hardware */
299 struct acpi_device *parent;
300 struct list_head children;
301 struct list_head node;
302 struct list_head wakeup_list;
303 struct acpi_device_status status;
304 struct acpi_device_flags flags;
305 struct acpi_device_pnp pnp;
306 struct acpi_device_power power;
307 struct acpi_device_wakeup wakeup;
308 struct acpi_device_perf performance;
309 struct acpi_device_dir dir;
310 struct acpi_scan_handler *handler;
311 struct acpi_driver *driver;
314 enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
315 u8 physical_node_count;
316 struct list_head physical_node_list;
317 struct mutex physical_node_lock;
318 DECLARE_BITMAP(physical_node_id_bitmap, ACPI_MAX_PHYSICAL_NODE);
319 struct list_head power_dependent;
320 void (*remove)(struct acpi_device *);
323 static inline void *acpi_driver_data(struct acpi_device *d)
325 return d->driver_data;
328 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
329 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
331 /* acpi_device.dev.bus == &acpi_bus_type */
332 extern struct bus_type acpi_bus_type;
339 struct acpi_bus_event {
340 struct list_head node;
341 acpi_device_class device_class;
347 struct acpi_eject_event {
348 struct acpi_device *device;
352 struct acpi_hp_work {
353 struct work_struct work;
358 void alloc_acpi_hp_work(acpi_handle handle, u32 type, void *context,
359 void (*func)(struct work_struct *work));
361 extern struct kobject *acpi_kobj;
362 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
363 void acpi_bus_private_data_handler(acpi_handle, void *);
364 int acpi_bus_get_private_data(acpi_handle, void **);
365 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
366 extern int register_acpi_notifier(struct notifier_block *);
367 extern int unregister_acpi_notifier(struct notifier_block *);
369 extern int register_acpi_bus_notifier(struct notifier_block *nb);
370 extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
375 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
376 void acpi_bus_data_handler(acpi_handle handle, void *context);
377 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
378 unsigned long long *sta);
379 int acpi_bus_get_status(struct acpi_device *device);
381 int acpi_bus_set_power(acpi_handle handle, int state);
382 const char *acpi_power_state_string(int state);
383 int acpi_device_get_power(struct acpi_device *device, int *state);
384 int acpi_device_set_power(struct acpi_device *device, int state);
385 int acpi_bus_init_power(struct acpi_device *device);
386 int acpi_device_fix_up_power(struct acpi_device *device);
387 int acpi_bus_update_power(acpi_handle handle, int *state_p);
388 bool acpi_bus_power_manageable(acpi_handle handle);
391 bool acpi_bus_can_wakeup(acpi_handle handle);
393 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
396 #ifdef CONFIG_ACPI_PROC_EVENT
397 int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
398 int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
399 int acpi_bus_receive_event(struct acpi_bus_event *event);
401 static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
405 void acpi_scan_lock_acquire(void);
406 void acpi_scan_lock_release(void);
407 int acpi_scan_add_handler(struct acpi_scan_handler *handler);
408 int acpi_bus_register_driver(struct acpi_driver *driver);
409 void acpi_bus_unregister_driver(struct acpi_driver *driver);
410 int acpi_bus_scan(acpi_handle handle);
411 void acpi_bus_hot_remove_device(void *context);
412 void acpi_bus_trim(struct acpi_device *start);
413 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
414 int acpi_match_device_ids(struct acpi_device *device,
415 const struct acpi_device_id *ids);
416 int acpi_create_dir(struct acpi_device *);
417 void acpi_remove_dir(struct acpi_device *);
421 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
422 * @__acpi_driver: acpi_driver struct
424 * Helper macro for ACPI drivers which do not do anything special in module
425 * init/exit. This eliminates a lot of boilerplate. Each module may only
426 * use this macro once, and calling it replaces module_init() and module_exit()
428 #define module_acpi_driver(__acpi_driver) \
429 module_driver(__acpi_driver, acpi_bus_register_driver, \
430 acpi_bus_unregister_driver)
433 * Bind physical devices with ACPI devices
435 struct acpi_bus_type {
436 struct list_head list;
438 bool (*match)(struct device *dev);
439 int (*find_device) (struct device *, acpi_handle *);
440 void (*setup)(struct device *);
441 void (*cleanup)(struct device *);
443 int register_acpi_bus_type(struct acpi_bus_type *);
444 int unregister_acpi_bus_type(struct acpi_bus_type *);
446 struct acpi_pci_root {
447 struct list_head node;
448 struct acpi_device * device;
451 struct resource secondary; /* downstream bus range */
453 u32 osc_support_set; /* _OSC state of support bits */
454 u32 osc_control_set; /* _OSC state of control bits */
455 phys_addr_t mcfg_addr;
459 acpi_handle acpi_find_child(acpi_handle, u64, bool);
460 static inline acpi_handle acpi_get_child(acpi_handle handle, u64 addr)
462 return acpi_find_child(handle, addr, false);
464 int acpi_is_root_bridge(acpi_handle);
465 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
466 #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)ACPI_HANDLE(dev))
468 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
469 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
472 acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
473 acpi_notify_handler handler, void *context);
474 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
475 acpi_notify_handler handler);
476 int acpi_device_power_state(struct device *dev, struct acpi_device *adev,
477 u32 target_state, int d_max_in, int *d_min_p);
478 int acpi_pm_device_sleep_state(struct device *, int *, int);
479 void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);
480 void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);
482 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
483 acpi_notify_handler handler,
488 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
489 acpi_notify_handler handler)
493 static inline int __acpi_device_power_state(int m, int *p)
497 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0;
499 static inline int acpi_device_power_state(struct device *dev,
500 struct acpi_device *adev,
501 u32 target_state, int d_max_in,
504 return __acpi_device_power_state(d_max_in, d_min_p);
506 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
508 return __acpi_device_power_state(m, p);
510 static inline void acpi_dev_pm_add_dependent(acpi_handle handle,
511 struct device *depdev) {}
512 static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,
513 struct device *depdev) {}
516 #ifdef CONFIG_PM_RUNTIME
517 int __acpi_device_run_wake(struct acpi_device *, bool);
518 int acpi_pm_device_run_wake(struct device *, bool);
520 static inline int __acpi_device_run_wake(struct acpi_device *adev, bool en)
524 static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
530 #ifdef CONFIG_PM_SLEEP
531 int __acpi_device_sleep_wake(struct acpi_device *, u32, bool);
532 int acpi_pm_device_sleep_wake(struct device *, bool);
534 static inline int __acpi_device_sleep_wake(struct acpi_device *adev,
535 u32 target_state, bool enable)
539 static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
545 #ifdef CONFIG_ACPI_SLEEP
546 u32 acpi_target_system_state(void);
548 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
551 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
553 return adev->flags.power_manageable;
556 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
558 return adev->wakeup.flags.valid;
561 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
563 return adev->power.states[ACPI_STATE_D3_COLD].flags.os_accessible;
566 #else /* CONFIG_ACPI */
568 static inline int register_acpi_bus_type(void *bus) { return 0; }
569 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
571 #endif /* CONFIG_ACPI */
573 #endif /*__ACPI_BUS_H__*/