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 #define PREFIX "ACPI: "
35 /* TBD: Make dynamic */
36 #define ACPI_MAX_HANDLES 10
37 struct acpi_handle_list {
39 acpi_handle handles[ACPI_MAX_HANDLES];
44 acpi_extract_package(union acpi_object *package,
45 struct acpi_buffer *format, struct acpi_buffer *buffer);
47 acpi_evaluate_integer(acpi_handle handle,
49 struct acpi_object_list *arguments, unsigned long *data);
51 acpi_evaluate_reference(acpi_handle handle,
53 struct acpi_object_list *arguments,
54 struct acpi_handle_list *list);
58 #include <linux/proc_fs.h>
60 #define ACPI_BUS_FILE_ROOT "acpi"
61 extern struct proc_dir_entry *acpi_root_dir;
62 extern struct fadt_descriptor acpi_fadt;
64 enum acpi_bus_removal_type {
65 ACPI_BUS_REMOVAL_NORMAL = 0,
66 ACPI_BUS_REMOVAL_EJECT,
67 ACPI_BUS_REMOVAL_SUPRISE,
68 ACPI_BUS_REMOVAL_TYPE_COUNT
71 enum acpi_bus_device_type {
72 ACPI_BUS_TYPE_DEVICE = 0,
74 ACPI_BUS_TYPE_PROCESSOR,
75 ACPI_BUS_TYPE_THERMAL,
77 ACPI_BUS_TYPE_POWER_BUTTON,
78 ACPI_BUS_TYPE_SLEEP_BUTTON,
79 ACPI_BUS_DEVICE_TYPE_COUNT
90 typedef int (*acpi_op_add) (struct acpi_device * device);
91 typedef int (*acpi_op_remove) (struct acpi_device * device, int type);
92 typedef int (*acpi_op_lock) (struct acpi_device * device, int type);
93 typedef int (*acpi_op_start) (struct acpi_device * device);
94 typedef int (*acpi_op_stop) (struct acpi_device * device, int type);
95 typedef int (*acpi_op_suspend) (struct acpi_device * device, pm_message_t state);
96 typedef int (*acpi_op_resume) (struct acpi_device * device);
97 typedef int (*acpi_op_scan) (struct acpi_device * device);
98 typedef int (*acpi_op_bind) (struct acpi_device * device);
99 typedef int (*acpi_op_unbind) (struct acpi_device * device);
100 typedef int (*acpi_op_match) (struct acpi_device * device,
101 struct acpi_driver * driver);
102 typedef int (*acpi_op_shutdown) (struct acpi_device * device);
104 struct acpi_bus_ops {
106 u32 acpi_op_remove:1;
110 u32 acpi_op_suspend:1;
111 u32 acpi_op_resume:1;
114 u32 acpi_op_unbind:1;
116 u32 acpi_op_shutdown:1;
120 struct acpi_device_ops {
122 acpi_op_remove remove;
126 acpi_op_suspend suspend;
127 acpi_op_resume resume;
130 acpi_op_unbind unbind;
132 acpi_op_shutdown shutdown;
138 char *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;
165 u32 compatible_ids:1;
171 u32 suprise_removal_ok:1;
172 u32 power_manageable:1;
173 u32 performance_manageable:1;
174 u32 wake_capable:1; /* Wakeup(_PRW) supported? */
175 u32 force_power_state:1;
181 struct acpi_device_dir {
182 struct proc_dir_entry *entry;
185 #define acpi_device_dir(d) ((d)->dir.entry)
189 typedef char acpi_bus_id[5];
190 typedef unsigned long acpi_bus_address;
191 typedef char acpi_hardware_id[9];
192 typedef char acpi_unique_id[9];
193 typedef char acpi_device_name[40];
194 typedef char acpi_device_class[20];
196 struct acpi_device_pnp {
197 acpi_bus_id bus_id; /* Object name */
198 acpi_bus_address bus_address; /* _ADR */
199 acpi_hardware_id hardware_id; /* _HID */
200 struct acpi_compatible_id_list *cid_list; /* _CIDs */
201 acpi_unique_id unique_id; /* _UID */
202 acpi_device_name device_name; /* Driver-determined */
203 acpi_device_class device_class; /* " */
206 #define acpi_device_bid(d) ((d)->pnp.bus_id)
207 #define acpi_device_adr(d) ((d)->pnp.bus_address)
208 #define acpi_device_hid(d) ((d)->pnp.hardware_id)
209 #define acpi_device_uid(d) ((d)->pnp.unique_id)
210 #define acpi_device_name(d) ((d)->pnp.device_name)
211 #define acpi_device_class(d) ((d)->pnp.device_class)
213 /* Power Management */
215 struct acpi_device_power_flags {
216 u32 explicit_get:1; /* _PSC present? */
217 u32 power_resources:1; /* Power resources */
218 u32 inrush_current:1; /* Serialize Dx->D0 */
219 u32 power_removed:1; /* Optimize Dx->D0 */
223 struct acpi_device_power_state {
226 u8 explicit_set:1; /* _PSx present? */
229 int power; /* % Power (compared to D0) */
230 int latency; /* Dx->D0 time (microseconds) */
231 struct acpi_handle_list resources; /* Power resources referenced */
234 struct acpi_device_power {
235 int state; /* Current state */
236 struct acpi_device_power_flags flags;
237 struct acpi_device_power_state states[4]; /* Power states (D0-D3) */
240 /* Performance Management */
242 struct acpi_device_perf_flags {
246 struct acpi_device_perf_state {
251 u8 power; /* % Power (compared to P0) */
252 u8 performance; /* % Performance ( " ) */
253 int latency; /* Px->P0 time (microseconds) */
256 struct acpi_device_perf {
258 struct acpi_device_perf_flags flags;
260 struct acpi_device_perf_state *states;
263 /* Wakeup Management */
264 struct acpi_device_wakeup_flags {
265 u8 valid:1; /* Can successfully enable wakeup? */
266 u8 run_wake:1; /* Run-Wake GPE devices */
269 struct acpi_device_wakeup_state {
274 struct acpi_device_wakeup {
275 acpi_handle gpe_device;
276 acpi_integer gpe_number;
277 acpi_integer sleep_state;
278 struct acpi_handle_list resources;
279 struct acpi_device_wakeup_state state;
280 struct acpi_device_wakeup_flags flags;
287 struct acpi_device *parent;
288 struct list_head children;
289 struct list_head node;
290 struct list_head wakeup_list;
291 struct list_head g_list;
292 struct acpi_device_status status;
293 struct acpi_device_flags flags;
294 struct acpi_device_pnp pnp;
295 struct acpi_device_power power;
296 struct acpi_device_wakeup wakeup;
297 struct acpi_device_perf performance;
298 struct acpi_device_dir dir;
299 struct acpi_device_ops ops;
300 struct acpi_driver *driver;
303 struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
304 enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
307 #define acpi_driver_data(d) ((d)->driver_data)
308 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
309 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
316 struct acpi_bus_event {
317 struct list_head node;
318 acpi_device_class device_class;
324 extern struct subsystem acpi_subsys;
330 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
331 void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context);
332 int acpi_bus_get_status(struct acpi_device *device);
333 int acpi_bus_get_power(acpi_handle handle, int *state);
334 int acpi_bus_set_power(acpi_handle handle, int state);
335 int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data);
336 int acpi_bus_receive_event(struct acpi_bus_event *event);
337 int acpi_bus_register_driver(struct acpi_driver *driver);
338 void acpi_bus_unregister_driver(struct acpi_driver *driver);
339 int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent,
340 acpi_handle handle, int type);
341 int acpi_bus_trim(struct acpi_device *start, int rmdevice);
342 int acpi_bus_start(struct acpi_device *device);
343 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd);
344 int acpi_match_ids(struct acpi_device *device, char *ids);
345 int acpi_create_dir(struct acpi_device *);
346 void acpi_remove_dir(struct acpi_device *);
349 * Bind physical devices with ACPI devices
351 #include <linux/device.h>
352 struct acpi_bus_type {
353 struct list_head list;
354 struct bus_type *bus;
355 /* For general devices under the bus */
356 int (*find_device) (struct device *, acpi_handle *);
357 /* For bridges, such as PCI root bridge, IDE controller */
358 int (*find_bridge) (struct device *, acpi_handle *);
360 int register_acpi_bus_type(struct acpi_bus_type *);
361 int unregister_acpi_bus_type(struct acpi_bus_type *);
362 struct device *acpi_get_physical_device(acpi_handle);
364 acpi_handle acpi_get_child(acpi_handle, acpi_integer);
365 acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
366 #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))
368 #endif /* CONFIG_ACPI */
370 #endif /*__ACPI_BUS_H__*/