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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
29#include <linux/device.h>
30
31#include <acpi/acpi.h>
32
33/* TBD: Make dynamic */
34#define ACPI_MAX_HANDLES 10
35struct acpi_handle_list {
36 u32 count;
37 acpi_handle handles[ACPI_MAX_HANDLES];
38};
39
40/* acpi_utils.h */
41acpi_status
42acpi_extract_package(union acpi_object *package,
43 struct acpi_buffer *format, struct acpi_buffer *buffer);
44acpi_status
45acpi_evaluate_integer(acpi_handle handle,
46 acpi_string pathname,
47 struct acpi_object_list *arguments, unsigned long long *data);
48acpi_status
49acpi_evaluate_reference(acpi_handle handle,
50 acpi_string pathname,
51 struct acpi_object_list *arguments,
52 struct acpi_handle_list *list);
53
54#ifdef CONFIG_ACPI
55
56#include <linux/proc_fs.h>
57
58#define ACPI_BUS_FILE_ROOT "acpi"
59extern struct proc_dir_entry *acpi_root_dir;
60
61enum acpi_bus_removal_type {
62 ACPI_BUS_REMOVAL_NORMAL = 0,
63 ACPI_BUS_REMOVAL_EJECT,
64 ACPI_BUS_REMOVAL_SUPRISE,
65 ACPI_BUS_REMOVAL_TYPE_COUNT
66};
67
68enum acpi_bus_device_type {
69 ACPI_BUS_TYPE_DEVICE = 0,
70 ACPI_BUS_TYPE_POWER,
71 ACPI_BUS_TYPE_PROCESSOR,
72 ACPI_BUS_TYPE_THERMAL,
73 ACPI_BUS_TYPE_POWER_BUTTON,
74 ACPI_BUS_TYPE_SLEEP_BUTTON,
75 ACPI_BUS_DEVICE_TYPE_COUNT
76};
77
78struct acpi_driver;
79struct acpi_device;
80
81/*
82 * ACPI Driver
83 * -----------
84 */
85
86typedef int (*acpi_op_add) (struct acpi_device * device);
87typedef int (*acpi_op_remove) (struct acpi_device * device, int type);
88typedef int (*acpi_op_start) (struct acpi_device * device);
89typedef int (*acpi_op_suspend) (struct acpi_device * device,
90 pm_message_t state);
91typedef int (*acpi_op_resume) (struct acpi_device * device);
92typedef int (*acpi_op_bind) (struct acpi_device * device);
93typedef int (*acpi_op_unbind) (struct acpi_device * device);
94typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
95
96struct acpi_bus_ops {
97 u32 acpi_op_add:1;
98 u32 acpi_op_start:1;
99};
100
101struct acpi_device_ops {
102 acpi_op_add add;
103 acpi_op_remove remove;
104 acpi_op_start start;
105 acpi_op_suspend suspend;
106 acpi_op_resume resume;
107 acpi_op_bind bind;
108 acpi_op_unbind unbind;
109 acpi_op_notify notify;
110};
111
112#define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
113
114struct acpi_driver {
115 char name[80];
116 char class[80];
117 const struct acpi_device_id *ids; /* Supported Hardware IDs */
118 unsigned int flags;
119 struct acpi_device_ops ops;
120 struct device_driver drv;
121 struct module *owner;
122};
123
124/*
125 * ACPI Device
126 * -----------
127 */
128
129/* Status (_STA) */
130
131struct acpi_device_status {
132 u32 present:1;
133 u32 enabled:1;
134 u32 show_in_ui:1;
135 u32 functional:1;
136 u32 battery_present:1;
137 u32 reserved:27;
138};
139
140/* Flags */
141
142struct acpi_device_flags {
143 u32 dynamic_status:1;
144 u32 bus_address:1;
145 u32 removable:1;
146 u32 ejectable:1;
147 u32 lockable:1;
148 u32 suprise_removal_ok:1;
149 u32 power_manageable:1;
150 u32 performance_manageable:1;
151 u32 reserved:24;
152};
153
154/* File System */
155
156struct acpi_device_dir {
157 struct proc_dir_entry *entry;
158};
159
160#define acpi_device_dir(d) ((d)->dir.entry)
161
162/* Plug and Play */
163
164typedef char acpi_bus_id[8];
165typedef unsigned long acpi_bus_address;
166typedef char acpi_device_name[40];
167typedef char acpi_device_class[20];
168
169struct acpi_hardware_id {
170 struct list_head list;
171 char *id;
172};
173
174struct acpi_device_pnp {
175 acpi_bus_id bus_id; /* Object name */
176 acpi_bus_address bus_address; /* _ADR */
177 char *unique_id; /* _UID */
178 struct list_head ids; /* _HID and _CIDs */
179 acpi_device_name device_name; /* Driver-determined */
180 acpi_device_class device_class; /* " */
181};
182
183#define acpi_device_bid(d) ((d)->pnp.bus_id)
184#define acpi_device_adr(d) ((d)->pnp.bus_address)
185const char *acpi_device_hid(struct acpi_device *device);
186#define acpi_device_name(d) ((d)->pnp.device_name)
187#define acpi_device_class(d) ((d)->pnp.device_class)
188
189/* Power Management */
190
191struct acpi_device_power_flags {
192 u32 explicit_get:1; /* _PSC present? */
193 u32 power_resources:1; /* Power resources */
194 u32 inrush_current:1; /* Serialize Dx->D0 */
195 u32 power_removed:1; /* Optimize Dx->D0 */
196 u32 reserved:28;
197};
198
199struct acpi_device_power_state {
200 struct {
201 u8 valid:1;
202 u8 explicit_set:1; /* _PSx present? */
203 u8 reserved:6;
204 } flags;
205 int power; /* % Power (compared to D0) */
206 int latency; /* Dx->D0 time (microseconds) */
207 struct acpi_handle_list resources; /* Power resources referenced */
208};
209
210struct acpi_device_power {
211 int state; /* Current state */
212 struct acpi_device_power_flags flags;
213 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
214};
215
216/* Performance Management */
217
218struct acpi_device_perf_flags {
219 u8 reserved:8;
220};
221
222struct acpi_device_perf_state {
223 struct {
224 u8 valid:1;
225 u8 reserved:7;
226 } flags;
227 u8 power; /* % Power (compared to P0) */
228 u8 performance; /* % Performance ( " ) */
229 int latency; /* Px->P0 time (microseconds) */
230};
231
232struct acpi_device_perf {
233 int state;
234 struct acpi_device_perf_flags flags;
235 int state_count;
236 struct acpi_device_perf_state *states;
237};
238
239/* Wakeup Management */
240struct acpi_device_wakeup_flags {
241 u8 valid:1; /* Can successfully enable wakeup? */
242 u8 run_wake:1; /* Run-Wake GPE devices */
243 u8 notifier_present:1; /* Wake-up notify handler has been installed */
244};
245
246struct acpi_device_wakeup {
247 acpi_handle gpe_device;
248 u64 gpe_number;
249 u64 sleep_state;
250 struct acpi_handle_list resources;
251 struct acpi_device_wakeup_flags flags;
252 int prepare_count;
253};
254
255/* Device */
256
257struct acpi_device {
258 int device_type;
259 acpi_handle handle; /* no handle for fixed hardware */
260 struct acpi_device *parent;
261 struct list_head children;
262 struct list_head node;
263 struct list_head wakeup_list;
264 struct acpi_device_status status;
265 struct acpi_device_flags flags;
266 struct acpi_device_pnp pnp;
267 struct acpi_device_power power;
268 struct acpi_device_wakeup wakeup;
269 struct acpi_device_perf performance;
270 struct acpi_device_dir dir;
271 struct acpi_device_ops ops;
272 struct acpi_driver *driver;
273 void *driver_data;
274 struct device dev;
275 struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
276 enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
277};
278
279static inline void *acpi_driver_data(struct acpi_device *d)
280{
281 return d->driver_data;
282}
283
284#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
285#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
286
287/* acpi_device.dev.bus == &acpi_bus_type */
288extern struct bus_type acpi_bus_type;
289
290/*
291 * Events
292 * ------
293 */
294
295struct acpi_bus_event {
296 struct list_head node;
297 acpi_device_class device_class;
298 acpi_bus_id bus_id;
299 u32 type;
300 u32 data;
301};
302
303extern struct kobject *acpi_kobj;
304extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
305void acpi_bus_private_data_handler(acpi_handle, void *);
306int acpi_bus_get_private_data(acpi_handle, void **);
307extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
308extern int register_acpi_notifier(struct notifier_block *);
309extern int unregister_acpi_notifier(struct notifier_block *);
310
311extern int register_acpi_bus_notifier(struct notifier_block *nb);
312extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
313/*
314 * External Functions
315 */
316
317int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
318void acpi_bus_data_handler(acpi_handle handle, void *context);
319acpi_status acpi_bus_get_status_handle(acpi_handle handle,
320 unsigned long long *sta);
321int acpi_bus_get_status(struct acpi_device *device);
322int acpi_bus_set_power(acpi_handle handle, int state);
323int acpi_bus_update_power(acpi_handle handle, int *state_p);
324bool acpi_bus_power_manageable(acpi_handle handle);
325bool acpi_bus_can_wakeup(acpi_handle handle);
326#ifdef CONFIG_ACPI_PROC_EVENT
327int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
328int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
329int acpi_bus_receive_event(struct acpi_bus_event *event);
330#else
331static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
332 { return 0; }
333#endif
334int acpi_bus_register_driver(struct acpi_driver *driver);
335void acpi_bus_unregister_driver(struct acpi_driver *driver);
336int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent,
337 acpi_handle handle, int type);
338int acpi_bus_trim(struct acpi_device *start, int rmdevice);
339int acpi_bus_start(struct acpi_device *device);
340acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
341int acpi_match_device_ids(struct acpi_device *device,
342 const struct acpi_device_id *ids);
343int acpi_create_dir(struct acpi_device *);
344void acpi_remove_dir(struct acpi_device *);
345
346/*
347 * Bind physical devices with ACPI devices
348 */
349struct acpi_bus_type {
350 struct list_head list;
351 struct bus_type *bus;
352 /* For general devices under the bus */
353 int (*find_device) (struct device *, acpi_handle *);
354 /* For bridges, such as PCI root bridge, IDE controller */
355 int (*find_bridge) (struct device *, acpi_handle *);
356};
357int register_acpi_bus_type(struct acpi_bus_type *);
358int unregister_acpi_bus_type(struct acpi_bus_type *);
359struct device *acpi_get_physical_device(acpi_handle);
360
361struct acpi_pci_root {
362 struct list_head node;
363 struct acpi_device * device;
364 struct acpi_pci_id id;
365 struct pci_bus *bus;
366 u16 segment;
367 struct resource secondary; /* downstream bus range */
368
369 u32 osc_support_set; /* _OSC state of support bits */
370 u32 osc_control_set; /* _OSC state of control bits */
371};
372
373/* helper */
374acpi_handle acpi_get_child(acpi_handle, u64);
375int acpi_is_root_bridge(acpi_handle);
376acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
377struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
378#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))
379
380int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
381int acpi_disable_wakeup_device_power(struct acpi_device *dev);
382
383#ifdef CONFIG_PM
384int acpi_pm_device_sleep_state(struct device *, int *);
385#else
386static inline int acpi_pm_device_sleep_state(struct device *d, int *p)
387{
388 if (p)
389 *p = ACPI_STATE_D0;
390 return ACPI_STATE_D3;
391}
392#endif
393
394#ifdef CONFIG_PM_SLEEP
395int acpi_pm_device_sleep_wake(struct device *, bool);
396#else
397static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
398{
399 return -ENODEV;
400}
401#endif
402
403#endif /* CONFIG_ACPI */
404
405#endif /*__ACPI_BUS_H__*/
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
29#include <linux/device.h>
30
31/* TBD: Make dynamic */
32#define ACPI_MAX_HANDLES 10
33struct acpi_handle_list {
34 u32 count;
35 acpi_handle handles[ACPI_MAX_HANDLES];
36};
37
38/* acpi_utils.h */
39acpi_status
40acpi_extract_package(union acpi_object *package,
41 struct acpi_buffer *format, struct acpi_buffer *buffer);
42acpi_status
43acpi_evaluate_integer(acpi_handle handle,
44 acpi_string pathname,
45 struct acpi_object_list *arguments, unsigned long long *data);
46acpi_status
47acpi_evaluate_reference(acpi_handle handle,
48 acpi_string pathname,
49 struct acpi_object_list *arguments,
50 struct acpi_handle_list *list);
51acpi_status
52acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
53 struct acpi_buffer *status_buf);
54
55acpi_status
56acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
57
58bool acpi_has_method(acpi_handle handle, char *name);
59acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
60 u64 arg);
61acpi_status acpi_evaluate_ej0(acpi_handle handle);
62acpi_status acpi_evaluate_lck(acpi_handle handle, int lock);
63bool acpi_ata_match(acpi_handle handle);
64bool acpi_bay_match(acpi_handle handle);
65bool acpi_dock_match(acpi_handle handle);
66
67bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, int rev, u64 funcs);
68union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid,
69 int rev, int func, union acpi_object *argv4);
70
71static inline union acpi_object *
72acpi_evaluate_dsm_typed(acpi_handle handle, const u8 *uuid, int rev, int func,
73 union acpi_object *argv4, acpi_object_type type)
74{
75 union acpi_object *obj;
76
77 obj = acpi_evaluate_dsm(handle, uuid, rev, func, argv4);
78 if (obj && obj->type != type) {
79 ACPI_FREE(obj);
80 obj = NULL;
81 }
82
83 return obj;
84}
85
86#define ACPI_INIT_DSM_ARGV4(cnt, eles) \
87 { \
88 .package.type = ACPI_TYPE_PACKAGE, \
89 .package.count = (cnt), \
90 .package.elements = (eles) \
91 }
92
93#ifdef CONFIG_ACPI
94
95#include <linux/proc_fs.h>
96
97#define ACPI_BUS_FILE_ROOT "acpi"
98extern struct proc_dir_entry *acpi_root_dir;
99
100enum acpi_bus_device_type {
101 ACPI_BUS_TYPE_DEVICE = 0,
102 ACPI_BUS_TYPE_POWER,
103 ACPI_BUS_TYPE_PROCESSOR,
104 ACPI_BUS_TYPE_THERMAL,
105 ACPI_BUS_TYPE_POWER_BUTTON,
106 ACPI_BUS_TYPE_SLEEP_BUTTON,
107 ACPI_BUS_DEVICE_TYPE_COUNT
108};
109
110struct acpi_driver;
111struct acpi_device;
112
113/*
114 * ACPI Scan Handler
115 * -----------------
116 */
117
118struct acpi_hotplug_profile {
119 struct kobject kobj;
120 int (*scan_dependent)(struct acpi_device *adev);
121 bool enabled:1;
122 bool demand_offline:1;
123};
124
125static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile(
126 struct kobject *kobj)
127{
128 return container_of(kobj, struct acpi_hotplug_profile, kobj);
129}
130
131struct acpi_scan_handler {
132 const struct acpi_device_id *ids;
133 struct list_head list_node;
134 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id);
135 void (*detach)(struct acpi_device *dev);
136 void (*bind)(struct device *phys_dev);
137 void (*unbind)(struct device *phys_dev);
138 struct acpi_hotplug_profile hotplug;
139};
140
141/*
142 * ACPI Hotplug Context
143 * --------------------
144 */
145
146struct acpi_hotplug_context {
147 struct acpi_device *self;
148 int (*notify)(struct acpi_device *, u32);
149 void (*uevent)(struct acpi_device *, u32);
150 void (*fixup)(struct acpi_device *);
151};
152
153/*
154 * ACPI Driver
155 * -----------
156 */
157
158typedef int (*acpi_op_add) (struct acpi_device * device);
159typedef int (*acpi_op_remove) (struct acpi_device * device);
160typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
161
162struct acpi_device_ops {
163 acpi_op_add add;
164 acpi_op_remove remove;
165 acpi_op_notify notify;
166};
167
168#define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
169
170struct acpi_driver {
171 char name[80];
172 char class[80];
173 const struct acpi_device_id *ids; /* Supported Hardware IDs */
174 unsigned int flags;
175 struct acpi_device_ops ops;
176 struct device_driver drv;
177 struct module *owner;
178};
179
180/*
181 * ACPI Device
182 * -----------
183 */
184
185/* Status (_STA) */
186
187struct acpi_device_status {
188 u32 present:1;
189 u32 enabled:1;
190 u32 show_in_ui:1;
191 u32 functional:1;
192 u32 battery_present:1;
193 u32 reserved:27;
194};
195
196/* Flags */
197
198struct acpi_device_flags {
199 u32 dynamic_status:1;
200 u32 removable:1;
201 u32 ejectable:1;
202 u32 power_manageable:1;
203 u32 match_driver:1;
204 u32 initialized:1;
205 u32 visited:1;
206 u32 no_hotplug:1;
207 u32 hotplug_notify:1;
208 u32 is_dock_station:1;
209 u32 reserved:22;
210};
211
212/* File System */
213
214struct acpi_device_dir {
215 struct proc_dir_entry *entry;
216};
217
218#define acpi_device_dir(d) ((d)->dir.entry)
219
220/* Plug and Play */
221
222typedef char acpi_bus_id[8];
223typedef unsigned long acpi_bus_address;
224typedef char acpi_device_name[40];
225typedef char acpi_device_class[20];
226
227struct acpi_hardware_id {
228 struct list_head list;
229 char *id;
230};
231
232struct acpi_pnp_type {
233 u32 hardware_id:1;
234 u32 bus_address:1;
235 u32 reserved:30;
236};
237
238struct acpi_device_pnp {
239 acpi_bus_id bus_id; /* Object name */
240 struct acpi_pnp_type type; /* ID type */
241 acpi_bus_address bus_address; /* _ADR */
242 char *unique_id; /* _UID */
243 struct list_head ids; /* _HID and _CIDs */
244 acpi_device_name device_name; /* Driver-determined */
245 acpi_device_class device_class; /* " */
246 union acpi_object *str_obj; /* unicode string for _STR method */
247 unsigned long sun; /* _SUN */
248};
249
250#define acpi_device_bid(d) ((d)->pnp.bus_id)
251#define acpi_device_adr(d) ((d)->pnp.bus_address)
252const char *acpi_device_hid(struct acpi_device *device);
253#define acpi_device_name(d) ((d)->pnp.device_name)
254#define acpi_device_class(d) ((d)->pnp.device_class)
255
256/* Power Management */
257
258struct acpi_device_power_flags {
259 u32 explicit_get:1; /* _PSC present? */
260 u32 power_resources:1; /* Power resources */
261 u32 inrush_current:1; /* Serialize Dx->D0 */
262 u32 power_removed:1; /* Optimize Dx->D0 */
263 u32 ignore_parent:1; /* Power is independent of parent power state */
264 u32 reserved:27;
265};
266
267struct acpi_device_power_state {
268 struct {
269 u8 valid:1;
270 u8 os_accessible:1;
271 u8 explicit_set:1; /* _PSx present? */
272 u8 reserved:6;
273 } flags;
274 int power; /* % Power (compared to D0) */
275 int latency; /* Dx->D0 time (microseconds) */
276 struct list_head resources; /* Power resources referenced */
277};
278
279struct acpi_device_power {
280 int state; /* Current state */
281 struct acpi_device_power_flags flags;
282 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
283};
284
285/* Performance Management */
286
287struct acpi_device_perf_flags {
288 u8 reserved:8;
289};
290
291struct acpi_device_perf_state {
292 struct {
293 u8 valid:1;
294 u8 reserved:7;
295 } flags;
296 u8 power; /* % Power (compared to P0) */
297 u8 performance; /* % Performance ( " ) */
298 int latency; /* Px->P0 time (microseconds) */
299};
300
301struct acpi_device_perf {
302 int state;
303 struct acpi_device_perf_flags flags;
304 int state_count;
305 struct acpi_device_perf_state *states;
306};
307
308/* Wakeup Management */
309struct acpi_device_wakeup_flags {
310 u8 valid:1; /* Can successfully enable wakeup? */
311 u8 run_wake:1; /* Run-Wake GPE devices */
312 u8 notifier_present:1; /* Wake-up notify handler has been installed */
313};
314
315struct acpi_device_wakeup {
316 acpi_handle gpe_device;
317 u64 gpe_number;
318 u64 sleep_state;
319 struct list_head resources;
320 struct acpi_device_wakeup_flags flags;
321 int prepare_count;
322};
323
324struct acpi_device_physical_node {
325 unsigned int node_id;
326 struct list_head node;
327 struct device *dev;
328 bool put_online:1;
329};
330
331/* Device */
332struct acpi_device {
333 int device_type;
334 acpi_handle handle; /* no handle for fixed hardware */
335 struct acpi_device *parent;
336 struct list_head children;
337 struct list_head node;
338 struct list_head wakeup_list;
339 struct list_head del_list;
340 struct acpi_device_status status;
341 struct acpi_device_flags flags;
342 struct acpi_device_pnp pnp;
343 struct acpi_device_power power;
344 struct acpi_device_wakeup wakeup;
345 struct acpi_device_perf performance;
346 struct acpi_device_dir dir;
347 struct acpi_scan_handler *handler;
348 struct acpi_hotplug_context *hp;
349 struct acpi_driver *driver;
350 void *driver_data;
351 struct device dev;
352 unsigned int physical_node_count;
353 struct list_head physical_node_list;
354 struct mutex physical_node_lock;
355 void (*remove)(struct acpi_device *);
356};
357
358static inline void *acpi_driver_data(struct acpi_device *d)
359{
360 return d->driver_data;
361}
362
363#define to_acpi_device(d) container_of(d, struct acpi_device, dev)
364#define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
365
366static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta)
367{
368 *((u32 *)&adev->status) = sta;
369}
370
371static inline void acpi_set_hp_context(struct acpi_device *adev,
372 struct acpi_hotplug_context *hp,
373 int (*notify)(struct acpi_device *, u32),
374 void (*uevent)(struct acpi_device *, u32),
375 void (*fixup)(struct acpi_device *))
376{
377 hp->self = adev;
378 hp->notify = notify;
379 hp->uevent = uevent;
380 hp->fixup = fixup;
381 adev->hp = hp;
382}
383
384void acpi_initialize_hp_context(struct acpi_device *adev,
385 struct acpi_hotplug_context *hp,
386 int (*notify)(struct acpi_device *, u32),
387 void (*uevent)(struct acpi_device *, u32));
388
389/* acpi_device.dev.bus == &acpi_bus_type */
390extern struct bus_type acpi_bus_type;
391
392/*
393 * Events
394 * ------
395 */
396
397struct acpi_bus_event {
398 struct list_head node;
399 acpi_device_class device_class;
400 acpi_bus_id bus_id;
401 u32 type;
402 u32 data;
403};
404
405extern struct kobject *acpi_kobj;
406extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
407void acpi_bus_private_data_handler(acpi_handle, void *);
408int acpi_bus_get_private_data(acpi_handle, void **);
409void acpi_bus_no_hotplug(acpi_handle handle);
410extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
411extern int register_acpi_notifier(struct notifier_block *);
412extern int unregister_acpi_notifier(struct notifier_block *);
413
414/*
415 * External Functions
416 */
417
418int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
419struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle);
420void acpi_bus_put_acpi_device(struct acpi_device *adev);
421acpi_status acpi_bus_get_status_handle(acpi_handle handle,
422 unsigned long long *sta);
423int acpi_bus_get_status(struct acpi_device *device);
424
425int acpi_bus_set_power(acpi_handle handle, int state);
426const char *acpi_power_state_string(int state);
427int acpi_device_get_power(struct acpi_device *device, int *state);
428int acpi_device_set_power(struct acpi_device *device, int state);
429int acpi_bus_init_power(struct acpi_device *device);
430int acpi_device_fix_up_power(struct acpi_device *device);
431int acpi_bus_update_power(acpi_handle handle, int *state_p);
432bool acpi_bus_power_manageable(acpi_handle handle);
433
434#ifdef CONFIG_PM
435bool acpi_bus_can_wakeup(acpi_handle handle);
436#else
437static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; }
438#endif
439
440void acpi_scan_lock_acquire(void);
441void acpi_scan_lock_release(void);
442void acpi_lock_hp_context(void);
443void acpi_unlock_hp_context(void);
444int acpi_scan_add_handler(struct acpi_scan_handler *handler);
445int acpi_bus_register_driver(struct acpi_driver *driver);
446void acpi_bus_unregister_driver(struct acpi_driver *driver);
447int acpi_bus_scan(acpi_handle handle);
448void acpi_bus_trim(struct acpi_device *start);
449acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
450int acpi_match_device_ids(struct acpi_device *device,
451 const struct acpi_device_id *ids);
452int acpi_create_dir(struct acpi_device *);
453void acpi_remove_dir(struct acpi_device *);
454
455static inline bool acpi_device_enumerated(struct acpi_device *adev)
456{
457 return adev && adev->flags.initialized && adev->flags.visited;
458}
459
460/**
461 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
462 * @__acpi_driver: acpi_driver struct
463 *
464 * Helper macro for ACPI drivers which do not do anything special in module
465 * init/exit. This eliminates a lot of boilerplate. Each module may only
466 * use this macro once, and calling it replaces module_init() and module_exit()
467 */
468#define module_acpi_driver(__acpi_driver) \
469 module_driver(__acpi_driver, acpi_bus_register_driver, \
470 acpi_bus_unregister_driver)
471
472/*
473 * Bind physical devices with ACPI devices
474 */
475struct acpi_bus_type {
476 struct list_head list;
477 const char *name;
478 bool (*match)(struct device *dev);
479 struct acpi_device * (*find_companion)(struct device *);
480 void (*setup)(struct device *);
481 void (*cleanup)(struct device *);
482};
483int register_acpi_bus_type(struct acpi_bus_type *);
484int unregister_acpi_bus_type(struct acpi_bus_type *);
485
486struct acpi_pci_root {
487 struct acpi_device * device;
488 struct pci_bus *bus;
489 u16 segment;
490 struct resource secondary; /* downstream bus range */
491
492 u32 osc_support_set; /* _OSC state of support bits */
493 u32 osc_control_set; /* _OSC state of control bits */
494 phys_addr_t mcfg_addr;
495};
496
497/* helper */
498
499struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
500 u64 address, bool check_children);
501int acpi_is_root_bridge(acpi_handle);
502struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
503
504int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
505int acpi_disable_wakeup_device_power(struct acpi_device *dev);
506
507#ifdef CONFIG_PM
508acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
509 acpi_notify_handler handler, void *context);
510acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
511 acpi_notify_handler handler);
512int acpi_pm_device_sleep_state(struct device *, int *, int);
513#else
514static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
515 acpi_notify_handler handler,
516 void *context)
517{
518 return AE_SUPPORT;
519}
520static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
521 acpi_notify_handler handler)
522{
523 return AE_SUPPORT;
524}
525static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
526{
527 if (p)
528 *p = ACPI_STATE_D0;
529
530 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?
531 m : ACPI_STATE_D0;
532}
533#endif
534
535#ifdef CONFIG_PM_RUNTIME
536int __acpi_device_run_wake(struct acpi_device *, bool);
537int acpi_pm_device_run_wake(struct device *, bool);
538#else
539static inline int __acpi_device_run_wake(struct acpi_device *adev, bool en)
540{
541 return -ENODEV;
542}
543static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
544{
545 return -ENODEV;
546}
547#endif
548
549#ifdef CONFIG_PM_SLEEP
550int __acpi_device_sleep_wake(struct acpi_device *, u32, bool);
551int acpi_pm_device_sleep_wake(struct device *, bool);
552#else
553static inline int __acpi_device_sleep_wake(struct acpi_device *adev,
554 u32 target_state, bool enable)
555{
556 return -ENODEV;
557}
558static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
559{
560 return -ENODEV;
561}
562#endif
563
564#ifdef CONFIG_ACPI_SLEEP
565u32 acpi_target_system_state(void);
566#else
567static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
568#endif
569
570static inline bool acpi_device_power_manageable(struct acpi_device *adev)
571{
572 return adev->flags.power_manageable;
573}
574
575static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
576{
577 return adev->wakeup.flags.valid;
578}
579
580static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
581{
582 return adev->power.states[ACPI_STATE_D3_COLD].flags.os_accessible;
583}
584
585#else /* CONFIG_ACPI */
586
587static inline int register_acpi_bus_type(void *bus) { return 0; }
588static inline int unregister_acpi_bus_type(void *bus) { return 0; }
589
590#endif /* CONFIG_ACPI */
591
592#endif /*__ACPI_BUS_H__*/