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1da177e4 LT |
1 | /* |
2 | * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $) | |
3 | * | |
4 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> | |
5 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
6 | * | |
7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
8 | * | |
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. | |
13 | * | |
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. | |
18 | * | |
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. | |
22 | * | |
23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
24 | */ | |
25 | ||
26 | #ifndef __ACPI_BUS_H__ | |
27 | #define __ACPI_BUS_H__ | |
28 | ||
5b327265 | 29 | #include <linux/device.h> |
1da177e4 LT |
30 | |
31 | #include <acpi/acpi.h> | |
32 | ||
33 | #define PREFIX "ACPI: " | |
34 | ||
35 | /* TBD: Make dynamic */ | |
36 | #define ACPI_MAX_HANDLES 10 | |
37 | struct acpi_handle_list { | |
4be44fcd LB |
38 | u32 count; |
39 | acpi_handle handles[ACPI_MAX_HANDLES]; | |
1da177e4 LT |
40 | }; |
41 | ||
1da177e4 LT |
42 | /* acpi_utils.h */ |
43 | acpi_status | |
4be44fcd LB |
44 | acpi_extract_package(union acpi_object *package, |
45 | struct acpi_buffer *format, struct acpi_buffer *buffer); | |
1da177e4 | 46 | acpi_status |
4be44fcd LB |
47 | acpi_evaluate_integer(acpi_handle handle, |
48 | acpi_string pathname, | |
27663c58 | 49 | struct acpi_object_list *arguments, unsigned long long *data); |
1da177e4 | 50 | acpi_status |
4be44fcd LB |
51 | acpi_evaluate_reference(acpi_handle handle, |
52 | acpi_string pathname, | |
53 | struct acpi_object_list *arguments, | |
54 | struct acpi_handle_list *list); | |
1da177e4 | 55 | |
76f58584 | 56 | #ifdef CONFIG_ACPI |
1da177e4 LT |
57 | |
58 | #include <linux/proc_fs.h> | |
59 | ||
60 | #define ACPI_BUS_FILE_ROOT "acpi" | |
4be44fcd | 61 | extern struct proc_dir_entry *acpi_root_dir; |
1da177e4 LT |
62 | |
63 | enum acpi_bus_removal_type { | |
4be44fcd | 64 | ACPI_BUS_REMOVAL_NORMAL = 0, |
1da177e4 LT |
65 | ACPI_BUS_REMOVAL_EJECT, |
66 | ACPI_BUS_REMOVAL_SUPRISE, | |
67 | ACPI_BUS_REMOVAL_TYPE_COUNT | |
68 | }; | |
69 | ||
70 | enum acpi_bus_device_type { | |
4be44fcd | 71 | ACPI_BUS_TYPE_DEVICE = 0, |
1da177e4 LT |
72 | ACPI_BUS_TYPE_POWER, |
73 | ACPI_BUS_TYPE_PROCESSOR, | |
74 | ACPI_BUS_TYPE_THERMAL, | |
75 | ACPI_BUS_TYPE_SYSTEM, | |
76 | ACPI_BUS_TYPE_POWER_BUTTON, | |
77 | ACPI_BUS_TYPE_SLEEP_BUTTON, | |
78 | ACPI_BUS_DEVICE_TYPE_COUNT | |
79 | }; | |
80 | ||
81 | struct acpi_driver; | |
82 | struct acpi_device; | |
83 | ||
1da177e4 LT |
84 | /* |
85 | * ACPI Driver | |
86 | * ----------- | |
87 | */ | |
88 | ||
4be44fcd LB |
89 | typedef int (*acpi_op_add) (struct acpi_device * device); |
90 | typedef int (*acpi_op_remove) (struct acpi_device * device, int type); | |
4be44fcd LB |
91 | typedef int (*acpi_op_start) (struct acpi_device * device); |
92 | typedef int (*acpi_op_stop) (struct acpi_device * device, int type); | |
fd350943 LB |
93 | typedef int (*acpi_op_suspend) (struct acpi_device * device, |
94 | pm_message_t state); | |
5d9464a4 | 95 | typedef int (*acpi_op_resume) (struct acpi_device * device); |
4be44fcd LB |
96 | typedef int (*acpi_op_bind) (struct acpi_device * device); |
97 | typedef int (*acpi_op_unbind) (struct acpi_device * device); | |
46ec8598 | 98 | typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event); |
1da177e4 | 99 | |
3fb02738 | 100 | struct acpi_bus_ops { |
4be44fcd | 101 | u32 acpi_op_add:1; |
4be44fcd | 102 | u32 acpi_op_start:1; |
3fb02738 RS |
103 | }; |
104 | ||
1da177e4 | 105 | struct acpi_device_ops { |
4be44fcd LB |
106 | acpi_op_add add; |
107 | acpi_op_remove remove; | |
4be44fcd LB |
108 | acpi_op_start start; |
109 | acpi_op_stop stop; | |
110 | acpi_op_suspend suspend; | |
111 | acpi_op_resume resume; | |
4be44fcd LB |
112 | acpi_op_bind bind; |
113 | acpi_op_unbind unbind; | |
46ec8598 | 114 | acpi_op_notify notify; |
1da177e4 LT |
115 | }; |
116 | ||
6d278131 BH |
117 | #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */ |
118 | ||
1da177e4 | 119 | struct acpi_driver { |
4be44fcd LB |
120 | char name[80]; |
121 | char class[80]; | |
8c8eb78f | 122 | const struct acpi_device_id *ids; /* Supported Hardware IDs */ |
6d278131 | 123 | unsigned int flags; |
4be44fcd | 124 | struct acpi_device_ops ops; |
d43ec68e | 125 | struct device_driver drv; |
1890a97a | 126 | struct module *owner; |
1da177e4 LT |
127 | }; |
128 | ||
129 | /* | |
130 | * ACPI Device | |
131 | * ----------- | |
132 | */ | |
133 | ||
134 | /* Status (_STA) */ | |
135 | ||
136 | struct acpi_device_status { | |
4be44fcd LB |
137 | u32 present:1; |
138 | u32 enabled:1; | |
139 | u32 show_in_ui:1; | |
140 | u32 functional:1; | |
141 | u32 battery_present:1; | |
142 | u32 reserved:27; | |
1da177e4 LT |
143 | }; |
144 | ||
1da177e4 LT |
145 | /* Flags */ |
146 | ||
147 | struct acpi_device_flags { | |
4be44fcd LB |
148 | u32 dynamic_status:1; |
149 | u32 hardware_id:1; | |
150 | u32 compatible_ids:1; | |
151 | u32 bus_address:1; | |
152 | u32 unique_id:1; | |
153 | u32 removable:1; | |
154 | u32 ejectable:1; | |
155 | u32 lockable:1; | |
156 | u32 suprise_removal_ok:1; | |
157 | u32 power_manageable:1; | |
158 | u32 performance_manageable:1; | |
159 | u32 wake_capable:1; /* Wakeup(_PRW) supported? */ | |
ec68373c LB |
160 | u32 force_power_state:1; |
161 | u32 reserved:19; | |
1da177e4 LT |
162 | }; |
163 | ||
1da177e4 LT |
164 | /* File System */ |
165 | ||
166 | struct acpi_device_dir { | |
4be44fcd | 167 | struct proc_dir_entry *entry; |
1da177e4 LT |
168 | }; |
169 | ||
170 | #define acpi_device_dir(d) ((d)->dir.entry) | |
171 | ||
1da177e4 LT |
172 | /* Plug and Play */ |
173 | ||
24c5c4c2 | 174 | typedef char acpi_bus_id[8]; |
4be44fcd | 175 | typedef unsigned long acpi_bus_address; |
4be44fcd LB |
176 | typedef char acpi_device_name[40]; |
177 | typedef char acpi_device_class[20]; | |
1da177e4 LT |
178 | |
179 | struct acpi_device_pnp { | |
4be44fcd LB |
180 | acpi_bus_id bus_id; /* Object name */ |
181 | acpi_bus_address bus_address; /* _ADR */ | |
15b8dd53 BM |
182 | char *hardware_id; /* _HID */ |
183 | struct acpica_device_id_list *cid_list; /* _CIDs */ | |
184 | char *unique_id; /* _UID */ | |
4be44fcd LB |
185 | acpi_device_name device_name; /* Driver-determined */ |
186 | acpi_device_class device_class; /* " */ | |
1da177e4 LT |
187 | }; |
188 | ||
189 | #define acpi_device_bid(d) ((d)->pnp.bus_id) | |
190 | #define acpi_device_adr(d) ((d)->pnp.bus_address) | |
191 | #define acpi_device_hid(d) ((d)->pnp.hardware_id) | |
192 | #define acpi_device_uid(d) ((d)->pnp.unique_id) | |
193 | #define acpi_device_name(d) ((d)->pnp.device_name) | |
194 | #define acpi_device_class(d) ((d)->pnp.device_class) | |
195 | ||
1da177e4 LT |
196 | /* Power Management */ |
197 | ||
198 | struct acpi_device_power_flags { | |
4be44fcd LB |
199 | u32 explicit_get:1; /* _PSC present? */ |
200 | u32 power_resources:1; /* Power resources */ | |
201 | u32 inrush_current:1; /* Serialize Dx->D0 */ | |
202 | u32 power_removed:1; /* Optimize Dx->D0 */ | |
203 | u32 reserved:28; | |
1da177e4 LT |
204 | }; |
205 | ||
206 | struct acpi_device_power_state { | |
207 | struct { | |
4be44fcd LB |
208 | u8 valid:1; |
209 | u8 explicit_set:1; /* _PSx present? */ | |
210 | u8 reserved:6; | |
211 | } flags; | |
212 | int power; /* % Power (compared to D0) */ | |
213 | int latency; /* Dx->D0 time (microseconds) */ | |
214 | struct acpi_handle_list resources; /* Power resources referenced */ | |
1da177e4 LT |
215 | }; |
216 | ||
217 | struct acpi_device_power { | |
4be44fcd | 218 | int state; /* Current state */ |
1da177e4 | 219 | struct acpi_device_power_flags flags; |
4be44fcd | 220 | struct acpi_device_power_state states[4]; /* Power states (D0-D3) */ |
1da177e4 LT |
221 | }; |
222 | ||
1da177e4 LT |
223 | /* Performance Management */ |
224 | ||
225 | struct acpi_device_perf_flags { | |
4be44fcd | 226 | u8 reserved:8; |
1da177e4 LT |
227 | }; |
228 | ||
229 | struct acpi_device_perf_state { | |
230 | struct { | |
4be44fcd LB |
231 | u8 valid:1; |
232 | u8 reserved:7; | |
233 | } flags; | |
234 | u8 power; /* % Power (compared to P0) */ | |
235 | u8 performance; /* % Performance ( " ) */ | |
236 | int latency; /* Px->P0 time (microseconds) */ | |
1da177e4 LT |
237 | }; |
238 | ||
239 | struct acpi_device_perf { | |
4be44fcd | 240 | int state; |
1da177e4 | 241 | struct acpi_device_perf_flags flags; |
4be44fcd | 242 | int state_count; |
1da177e4 LT |
243 | struct acpi_device_perf_state *states; |
244 | }; | |
245 | ||
246 | /* Wakeup Management */ | |
247 | struct acpi_device_wakeup_flags { | |
4be44fcd | 248 | u8 valid:1; /* Can successfully enable wakeup? */ |
0af4b8c4 | 249 | u8 prepared:1; /* Has the wake-up capability been enabled? */ |
4be44fcd | 250 | u8 run_wake:1; /* Run-Wake GPE devices */ |
1da177e4 LT |
251 | }; |
252 | ||
253 | struct acpi_device_wakeup_state { | |
4be44fcd | 254 | u8 enabled:1; |
1da177e4 LT |
255 | }; |
256 | ||
257 | struct acpi_device_wakeup { | |
4be44fcd | 258 | acpi_handle gpe_device; |
53b3531b | 259 | acpi_integer gpe_number; |
4be44fcd LB |
260 | acpi_integer sleep_state; |
261 | struct acpi_handle_list resources; | |
262 | struct acpi_device_wakeup_state state; | |
263 | struct acpi_device_wakeup_flags flags; | |
1da177e4 LT |
264 | }; |
265 | ||
266 | /* Device */ | |
267 | ||
268 | struct acpi_device { | |
4be44fcd LB |
269 | acpi_handle handle; |
270 | struct acpi_device *parent; | |
271 | struct list_head children; | |
272 | struct list_head node; | |
273 | struct list_head wakeup_list; | |
1da177e4 LT |
274 | struct acpi_device_status status; |
275 | struct acpi_device_flags flags; | |
4be44fcd | 276 | struct acpi_device_pnp pnp; |
1da177e4 LT |
277 | struct acpi_device_power power; |
278 | struct acpi_device_wakeup wakeup; | |
4be44fcd LB |
279 | struct acpi_device_perf performance; |
280 | struct acpi_device_dir dir; | |
281 | struct acpi_device_ops ops; | |
282 | struct acpi_driver *driver; | |
283 | void *driver_data; | |
5b327265 | 284 | struct device dev; |
c4168bff | 285 | struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */ |
fd350943 | 286 | enum acpi_bus_removal_type removal_type; /* indicate for different removal type */ |
1da177e4 LT |
287 | }; |
288 | ||
db89b4f0 PM |
289 | static inline void *acpi_driver_data(struct acpi_device *d) |
290 | { | |
291 | return d->driver_data; | |
292 | } | |
293 | ||
d43ec68e PM |
294 | #define to_acpi_device(d) container_of(d, struct acpi_device, dev) |
295 | #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) | |
1da177e4 | 296 | |
55955aad DB |
297 | /* acpi_device.dev.bus == &acpi_bus_type */ |
298 | extern struct bus_type acpi_bus_type; | |
299 | ||
1da177e4 LT |
300 | /* |
301 | * Events | |
302 | * ------ | |
303 | */ | |
304 | ||
305 | struct acpi_bus_event { | |
4be44fcd LB |
306 | struct list_head node; |
307 | acpi_device_class device_class; | |
308 | acpi_bus_id bus_id; | |
309 | u32 type; | |
310 | u32 data; | |
1da177e4 LT |
311 | }; |
312 | ||
99e0d2fc | 313 | extern struct kobject *acpi_kobj; |
962ce8ca | 314 | extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); |
20733939 ZR |
315 | void acpi_bus_private_data_handler(acpi_handle, u32, void *); |
316 | int acpi_bus_get_private_data(acpi_handle, void **); | |
9ee85241 ZR |
317 | extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); |
318 | extern int register_acpi_notifier(struct notifier_block *); | |
319 | extern int unregister_acpi_notifier(struct notifier_block *); | |
6bd00a61 SL |
320 | |
321 | extern int register_acpi_bus_notifier(struct notifier_block *nb); | |
322 | extern void unregister_acpi_bus_notifier(struct notifier_block *nb); | |
1da177e4 LT |
323 | /* |
324 | * External Functions | |
325 | */ | |
326 | ||
327 | int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); | |
328 | void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context); | |
4be44fcd LB |
329 | int acpi_bus_get_status(struct acpi_device *device); |
330 | int acpi_bus_get_power(acpi_handle handle, int *state); | |
331 | int acpi_bus_set_power(acpi_handle handle, int state); | |
3737b2b1 | 332 | bool acpi_bus_power_manageable(acpi_handle handle); |
eb9d0fe4 | 333 | bool acpi_bus_can_wakeup(acpi_handle handle); |
14e04fb3 LB |
334 | #ifdef CONFIG_ACPI_PROC_EVENT |
335 | int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data); | |
8db85d4c | 336 | int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data); |
4be44fcd | 337 | int acpi_bus_receive_event(struct acpi_bus_event *event); |
14e04fb3 LB |
338 | #else |
339 | static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data) | |
340 | { return 0; } | |
341 | #endif | |
4be44fcd | 342 | int acpi_bus_register_driver(struct acpi_driver *driver); |
06ea8e08 | 343 | void acpi_bus_unregister_driver(struct acpi_driver *driver); |
4be44fcd LB |
344 | int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent, |
345 | acpi_handle handle, int type); | |
ceaba663 | 346 | int acpi_bus_trim(struct acpi_device *start, int rmdevice); |
4be44fcd | 347 | int acpi_bus_start(struct acpi_device *device); |
fd350943 | 348 | acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); |
8c8eb78f TR |
349 | int acpi_match_device_ids(struct acpi_device *device, |
350 | const struct acpi_device_id *ids); | |
1da177e4 LT |
351 | int acpi_create_dir(struct acpi_device *); |
352 | void acpi_remove_dir(struct acpi_device *); | |
353 | ||
4e10d12a DSL |
354 | /* |
355 | * Bind physical devices with ACPI devices | |
356 | */ | |
357 | #include <linux/device.h> | |
358 | struct acpi_bus_type { | |
4be44fcd LB |
359 | struct list_head list; |
360 | struct bus_type *bus; | |
361 | /* For general devices under the bus */ | |
362 | int (*find_device) (struct device *, acpi_handle *); | |
4e10d12a | 363 | /* For bridges, such as PCI root bridge, IDE controller */ |
4be44fcd | 364 | int (*find_bridge) (struct device *, acpi_handle *); |
4e10d12a DSL |
365 | }; |
366 | int register_acpi_bus_type(struct acpi_bus_type *); | |
367 | int unregister_acpi_bus_type(struct acpi_bus_type *); | |
368 | struct device *acpi_get_physical_device(acpi_handle); | |
22c13f9d | 369 | |
4e10d12a DSL |
370 | /* helper */ |
371 | acpi_handle acpi_get_child(acpi_handle, acpi_integer); | |
27558203 | 372 | int acpi_is_root_bridge(acpi_handle); |
4e10d12a | 373 | acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int); |
465ae641 | 374 | #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle)) |
4e10d12a | 375 | |
296699de | 376 | #ifdef CONFIG_PM_SLEEP |
06166780 | 377 | int acpi_pm_device_sleep_state(struct device *, int *); |
eb9d0fe4 | 378 | int acpi_pm_device_sleep_wake(struct device *, bool); |
296699de | 379 | #else /* !CONFIG_PM_SLEEP */ |
06166780 | 380 | static inline int acpi_pm_device_sleep_state(struct device *d, int *p) |
296699de RW |
381 | { |
382 | if (p) | |
383 | *p = ACPI_STATE_D0; | |
384 | return ACPI_STATE_D3; | |
385 | } | |
f7a1b860 DH |
386 | static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable) |
387 | { | |
388 | return -ENODEV; | |
389 | } | |
296699de | 390 | #endif /* !CONFIG_PM_SLEEP */ |
fd4aff1a | 391 | |
fd350943 | 392 | #endif /* CONFIG_ACPI */ |
1da177e4 LT |
393 | |
394 | #endif /*__ACPI_BUS_H__*/ |