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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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/kobject.h>
30
31#include <acpi/acpi.h>
32
33#define PREFIX "ACPI: "
34
35/* TBD: Make dynamic */
36#define ACPI_MAX_HANDLES 10
37struct acpi_handle_list {
Len Brown4be44fc2005-08-05 00:44:28 -040038 u32 count;
39 acpi_handle handles[ACPI_MAX_HANDLES];
Linus Torvalds1da177e2005-04-16 15:20:36 -070040};
41
Linus Torvalds1da177e2005-04-16 15:20:36 -070042/* acpi_utils.h */
43acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -040044acpi_extract_package(union acpi_object *package,
45 struct acpi_buffer *format, struct acpi_buffer *buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -070046acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -040047acpi_evaluate_integer(acpi_handle handle,
48 acpi_string pathname,
49 struct acpi_object_list *arguments, unsigned long *data);
Linus Torvalds1da177e2005-04-16 15:20:36 -070050acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -040051acpi_evaluate_reference(acpi_handle handle,
52 acpi_string pathname,
53 struct acpi_object_list *arguments,
54 struct acpi_handle_list *list);
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
Len Brown76f58582005-08-24 12:10:49 -040056#ifdef CONFIG_ACPI
Linus Torvalds1da177e2005-04-16 15:20:36 -070057
58#include <linux/proc_fs.h>
59
60#define ACPI_BUS_FILE_ROOT "acpi"
Len Brown4be44fc2005-08-05 00:44:28 -040061extern struct proc_dir_entry *acpi_root_dir;
62extern FADT_DESCRIPTOR acpi_fadt;
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
64enum acpi_bus_removal_type {
Len Brown4be44fc2005-08-05 00:44:28 -040065 ACPI_BUS_REMOVAL_NORMAL = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 ACPI_BUS_REMOVAL_EJECT,
67 ACPI_BUS_REMOVAL_SUPRISE,
68 ACPI_BUS_REMOVAL_TYPE_COUNT
69};
70
71enum acpi_bus_device_type {
Len Brown4be44fc2005-08-05 00:44:28 -040072 ACPI_BUS_TYPE_DEVICE = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 ACPI_BUS_TYPE_POWER,
74 ACPI_BUS_TYPE_PROCESSOR,
75 ACPI_BUS_TYPE_THERMAL,
76 ACPI_BUS_TYPE_SYSTEM,
77 ACPI_BUS_TYPE_POWER_BUTTON,
78 ACPI_BUS_TYPE_SLEEP_BUTTON,
79 ACPI_BUS_DEVICE_TYPE_COUNT
80};
81
82struct acpi_driver;
83struct acpi_device;
84
Linus Torvalds1da177e2005-04-16 15:20:36 -070085/*
86 * ACPI Driver
87 * -----------
88 */
89
Len Brown4be44fc2005-08-05 00:44:28 -040090typedef int (*acpi_op_add) (struct acpi_device * device);
91typedef int (*acpi_op_remove) (struct acpi_device * device, int type);
92typedef int (*acpi_op_lock) (struct acpi_device * device, int type);
93typedef int (*acpi_op_start) (struct acpi_device * device);
94typedef int (*acpi_op_stop) (struct acpi_device * device, int type);
95typedef int (*acpi_op_suspend) (struct acpi_device * device, int state);
96typedef int (*acpi_op_resume) (struct acpi_device * device, int state);
97typedef int (*acpi_op_scan) (struct acpi_device * device);
98typedef int (*acpi_op_bind) (struct acpi_device * device);
99typedef int (*acpi_op_unbind) (struct acpi_device * device);
100typedef int (*acpi_op_match) (struct acpi_device * device,
101 struct acpi_driver * driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102
Rajesh Shah3fb02732005-04-28 00:25:52 -0700103struct acpi_bus_ops {
Len Brown4be44fc2005-08-05 00:44:28 -0400104 u32 acpi_op_add:1;
105 u32 acpi_op_remove:1;
106 u32 acpi_op_lock:1;
107 u32 acpi_op_start:1;
108 u32 acpi_op_stop:1;
109 u32 acpi_op_suspend:1;
110 u32 acpi_op_resume:1;
111 u32 acpi_op_scan:1;
112 u32 acpi_op_bind:1;
113 u32 acpi_op_unbind:1;
114 u32 acpi_op_match:1;
115 u32 reserved:21;
Rajesh Shah3fb02732005-04-28 00:25:52 -0700116};
117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118struct acpi_device_ops {
Len Brown4be44fc2005-08-05 00:44:28 -0400119 acpi_op_add add;
120 acpi_op_remove remove;
121 acpi_op_lock lock;
122 acpi_op_start start;
123 acpi_op_stop stop;
124 acpi_op_suspend suspend;
125 acpi_op_resume resume;
126 acpi_op_scan scan;
127 acpi_op_bind bind;
128 acpi_op_unbind unbind;
129 acpi_op_match match;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130};
131
132struct acpi_driver {
Len Brown4be44fc2005-08-05 00:44:28 -0400133 struct list_head node;
134 char name[80];
135 char class[80];
136 atomic_t references;
137 char *ids; /* Supported Hardware IDs */
138 struct acpi_device_ops ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139};
140
141/*
142 * ACPI Device
143 * -----------
144 */
145
146/* Status (_STA) */
147
148struct acpi_device_status {
Len Brown4be44fc2005-08-05 00:44:28 -0400149 u32 present:1;
150 u32 enabled:1;
151 u32 show_in_ui:1;
152 u32 functional:1;
153 u32 battery_present:1;
154 u32 reserved:27;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155};
156
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157/* Flags */
158
159struct acpi_device_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400160 u32 dynamic_status:1;
161 u32 hardware_id:1;
162 u32 compatible_ids:1;
163 u32 bus_address:1;
164 u32 unique_id:1;
165 u32 removable:1;
166 u32 ejectable:1;
167 u32 lockable:1;
168 u32 suprise_removal_ok:1;
169 u32 power_manageable:1;
170 u32 performance_manageable:1;
171 u32 wake_capable:1; /* Wakeup(_PRW) supported? */
172 u32 reserved:20;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173};
174
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175/* File System */
176
177struct acpi_device_dir {
Len Brown4be44fc2005-08-05 00:44:28 -0400178 struct proc_dir_entry *entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179};
180
181#define acpi_device_dir(d) ((d)->dir.entry)
182
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183/* Plug and Play */
184
Len Brown4be44fc2005-08-05 00:44:28 -0400185typedef char acpi_bus_id[5];
186typedef unsigned long acpi_bus_address;
187typedef char acpi_hardware_id[9];
188typedef char acpi_unique_id[9];
189typedef char acpi_device_name[40];
190typedef char acpi_device_class[20];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191
192struct acpi_device_pnp {
Len Brown4be44fc2005-08-05 00:44:28 -0400193 acpi_bus_id bus_id; /* Object name */
194 acpi_bus_address bus_address; /* _ADR */
195 acpi_hardware_id hardware_id; /* _HID */
196 struct acpi_compatible_id_list *cid_list; /* _CIDs */
197 acpi_unique_id unique_id; /* _UID */
198 acpi_device_name device_name; /* Driver-determined */
199 acpi_device_class device_class; /* " */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200};
201
202#define acpi_device_bid(d) ((d)->pnp.bus_id)
203#define acpi_device_adr(d) ((d)->pnp.bus_address)
204#define acpi_device_hid(d) ((d)->pnp.hardware_id)
205#define acpi_device_uid(d) ((d)->pnp.unique_id)
206#define acpi_device_name(d) ((d)->pnp.device_name)
207#define acpi_device_class(d) ((d)->pnp.device_class)
208
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209/* Power Management */
210
211struct acpi_device_power_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400212 u32 explicit_get:1; /* _PSC present? */
213 u32 power_resources:1; /* Power resources */
214 u32 inrush_current:1; /* Serialize Dx->D0 */
215 u32 power_removed:1; /* Optimize Dx->D0 */
216 u32 reserved:28;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217};
218
219struct acpi_device_power_state {
220 struct {
Len Brown4be44fc2005-08-05 00:44:28 -0400221 u8 valid:1;
222 u8 explicit_set:1; /* _PSx present? */
223 u8 reserved:6;
224 } flags;
225 int power; /* % Power (compared to D0) */
226 int latency; /* Dx->D0 time (microseconds) */
227 struct acpi_handle_list resources; /* Power resources referenced */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228};
229
230struct acpi_device_power {
Len Brown4be44fc2005-08-05 00:44:28 -0400231 int state; /* Current state */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 struct acpi_device_power_flags flags;
Len Brown4be44fc2005-08-05 00:44:28 -0400233 struct acpi_device_power_state states[4]; /* Power states (D0-D3) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234};
235
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236/* Performance Management */
237
238struct acpi_device_perf_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400239 u8 reserved:8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240};
241
242struct acpi_device_perf_state {
243 struct {
Len Brown4be44fc2005-08-05 00:44:28 -0400244 u8 valid:1;
245 u8 reserved:7;
246 } flags;
247 u8 power; /* % Power (compared to P0) */
248 u8 performance; /* % Performance ( " ) */
249 int latency; /* Px->P0 time (microseconds) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250};
251
252struct acpi_device_perf {
Len Brown4be44fc2005-08-05 00:44:28 -0400253 int state;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 struct acpi_device_perf_flags flags;
Len Brown4be44fc2005-08-05 00:44:28 -0400255 int state_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 struct acpi_device_perf_state *states;
257};
258
259/* Wakeup Management */
260struct acpi_device_wakeup_flags {
Len Brown4be44fc2005-08-05 00:44:28 -0400261 u8 valid:1; /* Can successfully enable wakeup? */
262 u8 run_wake:1; /* Run-Wake GPE devices */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263};
264
265struct acpi_device_wakeup_state {
Len Brown4be44fc2005-08-05 00:44:28 -0400266 u8 enabled:1;
267 u8 active:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268};
269
270struct acpi_device_wakeup {
Len Brown4be44fc2005-08-05 00:44:28 -0400271 acpi_handle gpe_device;
272 acpi_integer gpe_number;;
273 acpi_integer sleep_state;
274 struct acpi_handle_list resources;
275 struct acpi_device_wakeup_state state;
276 struct acpi_device_wakeup_flags flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277};
278
279/* Device */
280
281struct acpi_device {
Len Brown4be44fc2005-08-05 00:44:28 -0400282 acpi_handle handle;
283 struct acpi_device *parent;
284 struct list_head children;
285 struct list_head node;
286 struct list_head wakeup_list;
287 struct list_head g_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 struct acpi_device_status status;
289 struct acpi_device_flags flags;
Len Brown4be44fc2005-08-05 00:44:28 -0400290 struct acpi_device_pnp pnp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 struct acpi_device_power power;
292 struct acpi_device_wakeup wakeup;
Len Brown4be44fc2005-08-05 00:44:28 -0400293 struct acpi_device_perf performance;
294 struct acpi_device_dir dir;
295 struct acpi_device_ops ops;
296 struct acpi_driver *driver;
297 void *driver_data;
298 struct kobject kobj;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299};
300
301#define acpi_driver_data(d) ((d)->driver_data)
302
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303/*
304 * Events
305 * ------
306 */
307
308struct acpi_bus_event {
Len Brown4be44fc2005-08-05 00:44:28 -0400309 struct list_head node;
310 acpi_device_class device_class;
311 acpi_bus_id bus_id;
312 u32 type;
313 u32 data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314};
315
316extern struct subsystem acpi_subsys;
317
318/*
319 * External Functions
320 */
321
322int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
323void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context);
Len Brown4be44fc2005-08-05 00:44:28 -0400324int acpi_bus_get_status(struct acpi_device *device);
325int acpi_bus_get_power(acpi_handle handle, int *state);
326int acpi_bus_set_power(acpi_handle handle, int state);
327int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data);
328int acpi_bus_receive_event(struct acpi_bus_event *event);
329int acpi_bus_register_driver(struct acpi_driver *driver);
330int acpi_bus_unregister_driver(struct acpi_driver *driver);
331int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent,
332 acpi_handle handle, int type);
333int acpi_bus_start(struct acpi_device *device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334
Len Brown4be44fc2005-08-05 00:44:28 -0400335int acpi_match_ids(struct acpi_device *device, char *ids);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336int acpi_create_dir(struct acpi_device *);
337void acpi_remove_dir(struct acpi_device *);
338
David Shaohua Li4e10d122005-03-18 18:45:35 -0500339/*
340 * Bind physical devices with ACPI devices
341 */
342#include <linux/device.h>
343struct acpi_bus_type {
Len Brown4be44fc2005-08-05 00:44:28 -0400344 struct list_head list;
345 struct bus_type *bus;
346 /* For general devices under the bus */
347 int (*find_device) (struct device *, acpi_handle *);
David Shaohua Li4e10d122005-03-18 18:45:35 -0500348 /* For bridges, such as PCI root bridge, IDE controller */
Len Brown4be44fc2005-08-05 00:44:28 -0400349 int (*find_bridge) (struct device *, acpi_handle *);
David Shaohua Li4e10d122005-03-18 18:45:35 -0500350};
351int register_acpi_bus_type(struct acpi_bus_type *);
352int unregister_acpi_bus_type(struct acpi_bus_type *);
353struct device *acpi_get_physical_device(acpi_handle);
354/* helper */
355acpi_handle acpi_get_child(acpi_handle, acpi_integer);
356acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
357#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->firmware_data))
358
Len Brown76f58582005-08-24 12:10:49 -0400359#endif /* CONFIG_ACPI */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360
361#endif /*__ACPI_BUS_H__*/