Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * acpi_bus.c - ACPI Bus Driver ($Revision: 80 $) | |
3 | * | |
4 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
5 | * | |
6 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or (at | |
11 | * your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; if not, write to the Free Software Foundation, Inc., | |
20 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
21 | * | |
22 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
23 | */ | |
24 | ||
25 | #include <linux/module.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/ioport.h> | |
d568df84 | 28 | #include <linux/kernel.h> |
1da177e4 LT |
29 | #include <linux/list.h> |
30 | #include <linux/sched.h> | |
31 | #include <linux/pm.h> | |
32 | #include <linux/device.h> | |
33 | #include <linux/proc_fs.h> | |
6697c052 | 34 | #include <linux/acpi.h> |
5a0e3ad6 | 35 | #include <linux/slab.h> |
1da177e4 LT |
36 | #ifdef CONFIG_X86 |
37 | #include <asm/mpspec.h> | |
38 | #endif | |
7752d5cf | 39 | #include <linux/pci.h> |
1da177e4 LT |
40 | #include <acpi/acpi_bus.h> |
41 | #include <acpi/acpi_drivers.h> | |
eb27cae8 | 42 | #include <linux/dmi.h> |
1da177e4 | 43 | |
e60cc7a6 BH |
44 | #include "internal.h" |
45 | ||
1da177e4 | 46 | #define _COMPONENT ACPI_BUS_COMPONENT |
f52fd66d | 47 | ACPI_MODULE_NAME("bus"); |
1da177e4 | 48 | |
4be44fcd LB |
49 | struct acpi_device *acpi_root; |
50 | struct proc_dir_entry *acpi_root_dir; | |
1da177e4 LT |
51 | EXPORT_SYMBOL(acpi_root_dir); |
52 | ||
53 | #define STRUCT_TO_INT(s) (*((int*)&s)) | |
54 | ||
6415e12b ZY |
55 | static int set_power_nocheck(const struct dmi_system_id *id) |
56 | { | |
57 | printk(KERN_NOTICE PREFIX "%s detected - " | |
58f87ed0 | 58 | "disable power check in power transition\n", id->ident); |
6415e12b ZY |
59 | acpi_power_nocheck = 1; |
60 | return 0; | |
61 | } | |
62 | static struct dmi_system_id __cpuinitdata power_nocheck_dmi_table[] = { | |
63 | { | |
64 | set_power_nocheck, "HP Pavilion 05", { | |
65 | DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), | |
66 | DMI_MATCH(DMI_SYS_VENDOR, "HP Pavilion 05"), | |
67 | DMI_MATCH(DMI_PRODUCT_VERSION, "2001211RE101GLEND") }, NULL}, | |
68 | {}, | |
69 | }; | |
70 | ||
71 | ||
cce4f632 | 72 | #ifdef CONFIG_X86 |
aa2110cb LM |
73 | static int set_copy_dsdt(const struct dmi_system_id *id) |
74 | { | |
75 | printk(KERN_NOTICE "%s detected - " | |
76 | "force copy of DSDT to local memory\n", id->ident); | |
77 | acpi_gbl_copy_dsdt_locally = 1; | |
78 | return 0; | |
79 | } | |
80 | ||
81 | static struct dmi_system_id dsdt_dmi_table[] __initdata = { | |
82 | /* | |
100cf877 | 83 | * Invoke DSDT corruption work-around on all Toshiba Satellite. |
aa2110cb LM |
84 | * https://bugzilla.kernel.org/show_bug.cgi?id=14679 |
85 | */ | |
86 | { | |
87 | .callback = set_copy_dsdt, | |
100cf877 | 88 | .ident = "TOSHIBA Satellite", |
aa2110cb LM |
89 | .matches = { |
90 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
100cf877 | 91 | DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), |
aa2110cb | 92 | }, |
cce4f632 LM |
93 | }, |
94 | {} | |
aa2110cb | 95 | }; |
cce4f632 LM |
96 | #else |
97 | static struct dmi_system_id dsdt_dmi_table[] __initdata = { | |
98 | {} | |
99 | }; | |
100 | #endif | |
aa2110cb | 101 | |
1da177e4 LT |
102 | /* -------------------------------------------------------------------------- |
103 | Device Management | |
104 | -------------------------------------------------------------------------- */ | |
105 | ||
4be44fcd | 106 | int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) |
1da177e4 | 107 | { |
4be44fcd | 108 | acpi_status status = AE_OK; |
1da177e4 | 109 | |
1da177e4 LT |
110 | |
111 | if (!device) | |
d550d98d | 112 | return -EINVAL; |
1da177e4 LT |
113 | |
114 | /* TBD: Support fixed-feature devices */ | |
115 | ||
4be44fcd | 116 | status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device); |
1da177e4 | 117 | if (ACPI_FAILURE(status) || !*device) { |
9805cb76 LB |
118 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", |
119 | handle)); | |
d550d98d | 120 | return -ENODEV; |
1da177e4 LT |
121 | } |
122 | ||
d550d98d | 123 | return 0; |
1da177e4 | 124 | } |
4be44fcd | 125 | |
1da177e4 LT |
126 | EXPORT_SYMBOL(acpi_bus_get_device); |
127 | ||
402ac536 BH |
128 | acpi_status acpi_bus_get_status_handle(acpi_handle handle, |
129 | unsigned long long *sta) | |
1da177e4 | 130 | { |
402ac536 | 131 | acpi_status status; |
4be44fcd | 132 | |
402ac536 BH |
133 | status = acpi_evaluate_integer(handle, "_STA", NULL, sta); |
134 | if (ACPI_SUCCESS(status)) | |
135 | return AE_OK; | |
1da177e4 | 136 | |
402ac536 BH |
137 | if (status == AE_NOT_FOUND) { |
138 | *sta = ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | | |
139 | ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING; | |
140 | return AE_OK; | |
1da177e4 | 141 | } |
402ac536 BH |
142 | return status; |
143 | } | |
1da177e4 | 144 | |
402ac536 BH |
145 | int acpi_bus_get_status(struct acpi_device *device) |
146 | { | |
147 | acpi_status status; | |
148 | unsigned long long sta; | |
149 | ||
150 | status = acpi_bus_get_status_handle(device->handle, &sta); | |
151 | if (ACPI_FAILURE(status)) | |
152 | return -ENODEV; | |
153 | ||
154 | STRUCT_TO_INT(device->status) = (int) sta; | |
1da177e4 LT |
155 | |
156 | if (device->status.functional && !device->status.present) { | |
39a0ad87 ZY |
157 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: " |
158 | "functional but not present;\n", | |
159 | device->pnp.bus_id, | |
160 | (u32) STRUCT_TO_INT(device->status))); | |
1da177e4 LT |
161 | } |
162 | ||
4be44fcd LB |
163 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n", |
164 | device->pnp.bus_id, | |
165 | (u32) STRUCT_TO_INT(device->status))); | |
d550d98d | 166 | return 0; |
1da177e4 | 167 | } |
4be44fcd | 168 | EXPORT_SYMBOL(acpi_bus_get_status); |
1da177e4 | 169 | |
20733939 | 170 | void acpi_bus_private_data_handler(acpi_handle handle, |
8e4319c4 | 171 | void *context) |
20733939 ZR |
172 | { |
173 | return; | |
174 | } | |
175 | EXPORT_SYMBOL(acpi_bus_private_data_handler); | |
176 | ||
177 | int acpi_bus_get_private_data(acpi_handle handle, void **data) | |
178 | { | |
179 | acpi_status status = AE_OK; | |
180 | ||
181 | if (!*data) | |
182 | return -EINVAL; | |
183 | ||
184 | status = acpi_get_data(handle, acpi_bus_private_data_handler, data); | |
185 | if (ACPI_FAILURE(status) || !*data) { | |
186 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", | |
187 | handle)); | |
188 | return -ENODEV; | |
189 | } | |
190 | ||
191 | return 0; | |
192 | } | |
193 | EXPORT_SYMBOL(acpi_bus_get_private_data); | |
194 | ||
1da177e4 LT |
195 | /* -------------------------------------------------------------------------- |
196 | Power Management | |
197 | -------------------------------------------------------------------------- */ | |
198 | ||
4be44fcd | 199 | int acpi_bus_get_power(acpi_handle handle, int *state) |
1da177e4 | 200 | { |
4be44fcd LB |
201 | int result = 0; |
202 | acpi_status status = 0; | |
203 | struct acpi_device *device = NULL; | |
27663c58 | 204 | unsigned long long psc = 0; |
1da177e4 | 205 | |
1da177e4 LT |
206 | |
207 | result = acpi_bus_get_device(handle, &device); | |
208 | if (result) | |
d550d98d | 209 | return result; |
1da177e4 LT |
210 | |
211 | *state = ACPI_STATE_UNKNOWN; | |
212 | ||
213 | if (!device->flags.power_manageable) { | |
214 | /* TBD: Non-recursive algorithm for walking up hierarchy */ | |
215 | if (device->parent) | |
216 | *state = device->parent->power.state; | |
217 | else | |
218 | *state = ACPI_STATE_D0; | |
4be44fcd | 219 | } else { |
1da177e4 | 220 | /* |
aafbcd16 | 221 | * Get the device's power state either directly (via _PSC) or |
1da177e4 LT |
222 | * indirectly (via power resources). |
223 | */ | |
0c99c528 ZR |
224 | if (device->power.flags.power_resources) { |
225 | result = acpi_power_get_inferred_state(device); | |
226 | if (result) | |
227 | return result; | |
228 | } else if (device->power.flags.explicit_get) { | |
4be44fcd LB |
229 | status = acpi_evaluate_integer(device->handle, "_PSC", |
230 | NULL, &psc); | |
1da177e4 | 231 | if (ACPI_FAILURE(status)) |
d550d98d | 232 | return -ENODEV; |
4be44fcd | 233 | device->power.state = (int)psc; |
1da177e4 LT |
234 | } |
235 | ||
236 | *state = device->power.state; | |
237 | } | |
238 | ||
239 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is D%d\n", | |
4be44fcd | 240 | device->pnp.bus_id, device->power.state)); |
1da177e4 | 241 | |
d550d98d | 242 | return 0; |
1da177e4 | 243 | } |
1da177e4 | 244 | |
4be44fcd | 245 | EXPORT_SYMBOL(acpi_bus_get_power); |
1da177e4 | 246 | |
4be44fcd | 247 | int acpi_bus_set_power(acpi_handle handle, int state) |
1da177e4 | 248 | { |
4be44fcd LB |
249 | int result = 0; |
250 | acpi_status status = AE_OK; | |
251 | struct acpi_device *device = NULL; | |
252 | char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' }; | |
1da177e4 | 253 | |
1da177e4 LT |
254 | |
255 | result = acpi_bus_get_device(handle, &device); | |
256 | if (result) | |
d550d98d | 257 | return result; |
1da177e4 LT |
258 | |
259 | if ((state < ACPI_STATE_D0) || (state > ACPI_STATE_D3)) | |
d550d98d | 260 | return -EINVAL; |
1da177e4 LT |
261 | |
262 | /* Make sure this is a valid target state */ | |
263 | ||
264 | if (!device->flags.power_manageable) { | |
9805cb76 | 265 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device `[%s]' is not power manageable\n", |
19c38de8 | 266 | kobject_name(&device->dev.kobj))); |
d550d98d | 267 | return -ENODEV; |
1da177e4 | 268 | } |
b913100d | 269 | /* |
c35923bc | 270 | * Get device's current power state |
b913100d | 271 | */ |
f5adfaa3 ZY |
272 | if (!acpi_power_nocheck) { |
273 | /* | |
274 | * Maybe the incorrect power state is returned on the bogus | |
275 | * bios, which is different with the real power state. | |
276 | * For example: the bios returns D0 state and the real power | |
277 | * state is D3. OS expects to set the device to D0 state. In | |
278 | * such case if OS uses the power state returned by the BIOS, | |
279 | * the device can't be transisted to the correct power state. | |
280 | * So if the acpi_power_nocheck is set, it is unnecessary to | |
281 | * get the power state by calling acpi_bus_get_power. | |
282 | */ | |
283 | acpi_bus_get_power(device->handle, &device->power.state); | |
284 | } | |
ec68373c | 285 | if ((state == device->power.state) && !device->flags.force_power_state) { |
b1028c54 KK |
286 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n", |
287 | state)); | |
288 | return 0; | |
1da177e4 | 289 | } |
b1028c54 | 290 | |
1da177e4 | 291 | if (!device->power.states[state].flags.valid) { |
cece9296 | 292 | printk(KERN_WARNING PREFIX "Device does not support D%d\n", state); |
d550d98d | 293 | return -ENODEV; |
1da177e4 LT |
294 | } |
295 | if (device->parent && (state < device->parent->power.state)) { | |
cece9296 | 296 | printk(KERN_WARNING PREFIX |
a6fc6720 | 297 | "Cannot set device to a higher-powered" |
cece9296 | 298 | " state than parent\n"); |
d550d98d | 299 | return -ENODEV; |
1da177e4 LT |
300 | } |
301 | ||
302 | /* | |
303 | * Transition Power | |
304 | * ---------------- | |
305 | * On transitions to a high-powered state we first apply power (via | |
306 | * power resources) then evalute _PSx. Conversly for transitions to | |
307 | * a lower-powered state. | |
b913100d | 308 | */ |
1da177e4 LT |
309 | if (state < device->power.state) { |
310 | if (device->power.flags.power_resources) { | |
311 | result = acpi_power_transition(device, state); | |
312 | if (result) | |
313 | goto end; | |
314 | } | |
315 | if (device->power.states[state].flags.explicit_set) { | |
4be44fcd LB |
316 | status = acpi_evaluate_object(device->handle, |
317 | object_name, NULL, NULL); | |
1da177e4 LT |
318 | if (ACPI_FAILURE(status)) { |
319 | result = -ENODEV; | |
320 | goto end; | |
321 | } | |
322 | } | |
4be44fcd | 323 | } else { |
1da177e4 | 324 | if (device->power.states[state].flags.explicit_set) { |
4be44fcd LB |
325 | status = acpi_evaluate_object(device->handle, |
326 | object_name, NULL, NULL); | |
1da177e4 LT |
327 | if (ACPI_FAILURE(status)) { |
328 | result = -ENODEV; | |
329 | goto end; | |
330 | } | |
331 | } | |
332 | if (device->power.flags.power_resources) { | |
333 | result = acpi_power_transition(device, state); | |
334 | if (result) | |
335 | goto end; | |
336 | } | |
337 | } | |
338 | ||
4be44fcd | 339 | end: |
1da177e4 | 340 | if (result) |
cece9296 | 341 | printk(KERN_WARNING PREFIX |
ddc50b6a | 342 | "Device [%s] failed to transition to D%d\n", |
cece9296 | 343 | device->pnp.bus_id, state); |
5e32132b SL |
344 | else { |
345 | device->power.state = state; | |
4be44fcd LB |
346 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
347 | "Device [%s] transitioned to D%d\n", | |
348 | device->pnp.bus_id, state)); | |
5e32132b | 349 | } |
1da177e4 | 350 | |
d550d98d | 351 | return result; |
1da177e4 | 352 | } |
1da177e4 | 353 | |
4be44fcd | 354 | EXPORT_SYMBOL(acpi_bus_set_power); |
1da177e4 | 355 | |
3737b2b1 RW |
356 | bool acpi_bus_power_manageable(acpi_handle handle) |
357 | { | |
358 | struct acpi_device *device; | |
359 | int result; | |
360 | ||
361 | result = acpi_bus_get_device(handle, &device); | |
362 | return result ? false : device->flags.power_manageable; | |
363 | } | |
364 | ||
365 | EXPORT_SYMBOL(acpi_bus_power_manageable); | |
366 | ||
eb9d0fe4 RW |
367 | bool acpi_bus_can_wakeup(acpi_handle handle) |
368 | { | |
369 | struct acpi_device *device; | |
370 | int result; | |
371 | ||
372 | result = acpi_bus_get_device(handle, &device); | |
373 | return result ? false : device->wakeup.flags.valid; | |
374 | } | |
375 | ||
376 | EXPORT_SYMBOL(acpi_bus_can_wakeup); | |
377 | ||
70023de8 SL |
378 | static void acpi_print_osc_error(acpi_handle handle, |
379 | struct acpi_osc_context *context, char *error) | |
380 | { | |
381 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER}; | |
382 | int i; | |
383 | ||
384 | if (ACPI_FAILURE(acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer))) | |
385 | printk(KERN_DEBUG "%s\n", error); | |
386 | else { | |
387 | printk(KERN_DEBUG "%s:%s\n", (char *)buffer.pointer, error); | |
388 | kfree(buffer.pointer); | |
389 | } | |
390 | printk(KERN_DEBUG"_OSC request data:"); | |
391 | for (i = 0; i < context->cap.length; i += sizeof(u32)) | |
392 | printk("%x ", *((u32 *)(context->cap.pointer + i))); | |
393 | printk("\n"); | |
394 | } | |
395 | ||
70023de8 SL |
396 | static acpi_status acpi_str_to_uuid(char *str, u8 *uuid) |
397 | { | |
398 | int i; | |
399 | static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21, | |
400 | 24, 26, 28, 30, 32, 34}; | |
401 | ||
402 | if (strlen(str) != 36) | |
403 | return AE_BAD_PARAMETER; | |
404 | for (i = 0; i < 36; i++) { | |
405 | if (i == 8 || i == 13 || i == 18 || i == 23) { | |
406 | if (str[i] != '-') | |
407 | return AE_BAD_PARAMETER; | |
408 | } else if (!isxdigit(str[i])) | |
409 | return AE_BAD_PARAMETER; | |
410 | } | |
411 | for (i = 0; i < 16; i++) { | |
965fd9e9 AS |
412 | uuid[i] = hex_to_bin(str[opc_map_to_uuid[i]]) << 4; |
413 | uuid[i] |= hex_to_bin(str[opc_map_to_uuid[i] + 1]); | |
70023de8 SL |
414 | } |
415 | return AE_OK; | |
416 | } | |
417 | ||
418 | acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) | |
419 | { | |
420 | acpi_status status; | |
421 | struct acpi_object_list input; | |
422 | union acpi_object in_params[4]; | |
423 | union acpi_object *out_obj; | |
424 | u8 uuid[16]; | |
425 | u32 errors; | |
9dc130fc | 426 | struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; |
70023de8 SL |
427 | |
428 | if (!context) | |
429 | return AE_ERROR; | |
430 | if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid))) | |
431 | return AE_ERROR; | |
432 | context->ret.length = ACPI_ALLOCATE_BUFFER; | |
433 | context->ret.pointer = NULL; | |
434 | ||
435 | /* Setting up input parameters */ | |
436 | input.count = 4; | |
437 | input.pointer = in_params; | |
438 | in_params[0].type = ACPI_TYPE_BUFFER; | |
439 | in_params[0].buffer.length = 16; | |
440 | in_params[0].buffer.pointer = uuid; | |
441 | in_params[1].type = ACPI_TYPE_INTEGER; | |
442 | in_params[1].integer.value = context->rev; | |
443 | in_params[2].type = ACPI_TYPE_INTEGER; | |
444 | in_params[2].integer.value = context->cap.length/sizeof(u32); | |
445 | in_params[3].type = ACPI_TYPE_BUFFER; | |
446 | in_params[3].buffer.length = context->cap.length; | |
447 | in_params[3].buffer.pointer = context->cap.pointer; | |
448 | ||
9dc130fc | 449 | status = acpi_evaluate_object(handle, "_OSC", &input, &output); |
70023de8 SL |
450 | if (ACPI_FAILURE(status)) |
451 | return status; | |
452 | ||
9dc130fc | 453 | if (!output.length) |
70023de8 SL |
454 | return AE_NULL_OBJECT; |
455 | ||
9dc130fc SL |
456 | out_obj = output.pointer; |
457 | if (out_obj->type != ACPI_TYPE_BUFFER | |
458 | || out_obj->buffer.length != context->cap.length) { | |
70023de8 SL |
459 | acpi_print_osc_error(handle, context, |
460 | "_OSC evaluation returned wrong type"); | |
461 | status = AE_TYPE; | |
462 | goto out_kfree; | |
463 | } | |
464 | /* Need to ignore the bit0 in result code */ | |
465 | errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0); | |
466 | if (errors) { | |
467 | if (errors & OSC_REQUEST_ERROR) | |
468 | acpi_print_osc_error(handle, context, | |
469 | "_OSC request failed"); | |
470 | if (errors & OSC_INVALID_UUID_ERROR) | |
471 | acpi_print_osc_error(handle, context, | |
472 | "_OSC invalid UUID"); | |
473 | if (errors & OSC_INVALID_REVISION_ERROR) | |
474 | acpi_print_osc_error(handle, context, | |
475 | "_OSC invalid revision"); | |
476 | if (errors & OSC_CAPABILITIES_MASK_ERROR) { | |
477 | if (((u32 *)context->cap.pointer)[OSC_QUERY_TYPE] | |
478 | & OSC_QUERY_ENABLE) | |
479 | goto out_success; | |
480 | status = AE_SUPPORT; | |
481 | goto out_kfree; | |
482 | } | |
483 | status = AE_ERROR; | |
484 | goto out_kfree; | |
485 | } | |
486 | out_success: | |
9dc130fc SL |
487 | context->ret.length = out_obj->buffer.length; |
488 | context->ret.pointer = kmalloc(context->ret.length, GFP_KERNEL); | |
489 | if (!context->ret.pointer) { | |
490 | status = AE_NO_MEMORY; | |
491 | goto out_kfree; | |
492 | } | |
493 | memcpy(context->ret.pointer, out_obj->buffer.pointer, | |
494 | context->ret.length); | |
495 | status = AE_OK; | |
70023de8 SL |
496 | |
497 | out_kfree: | |
9dc130fc SL |
498 | kfree(output.pointer); |
499 | if (status != AE_OK) | |
500 | context->ret.pointer = NULL; | |
70023de8 SL |
501 | return status; |
502 | } | |
503 | EXPORT_SYMBOL(acpi_run_osc); | |
504 | ||
3563ff96 SL |
505 | static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48"; |
506 | static void acpi_bus_osc_support(void) | |
507 | { | |
508 | u32 capbuf[2]; | |
509 | struct acpi_osc_context context = { | |
510 | .uuid_str = sb_uuid_str, | |
511 | .rev = 1, | |
512 | .cap.length = 8, | |
513 | .cap.pointer = capbuf, | |
514 | }; | |
515 | acpi_handle handle; | |
516 | ||
517 | capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE; | |
518 | capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */ | |
6a4e2b75 ZY |
519 | #if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\ |
520 | defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE) | |
3563ff96 SL |
521 | capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT; |
522 | #endif | |
6a4e2b75 ZY |
523 | |
524 | #if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE) | |
525 | capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT; | |
526 | #endif | |
3563ff96 SL |
527 | if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) |
528 | return; | |
529 | if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) | |
530 | kfree(context.ret.pointer); | |
531 | /* do we need to check the returned cap? Sounds no */ | |
532 | } | |
533 | ||
1da177e4 LT |
534 | /* -------------------------------------------------------------------------- |
535 | Event Management | |
536 | -------------------------------------------------------------------------- */ | |
537 | ||
14e04fb3 | 538 | #ifdef CONFIG_ACPI_PROC_EVENT |
1da177e4 LT |
539 | static DEFINE_SPINLOCK(acpi_bus_event_lock); |
540 | ||
541 | LIST_HEAD(acpi_bus_event_list); | |
542 | DECLARE_WAIT_QUEUE_HEAD(acpi_bus_event_queue); | |
543 | ||
4be44fcd | 544 | extern int event_is_open; |
1da177e4 | 545 | |
8db85d4c | 546 | int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id, u8 type, int data) |
1da177e4 | 547 | { |
8db85d4c | 548 | struct acpi_bus_event *event; |
4be44fcd | 549 | unsigned long flags = 0; |
1da177e4 | 550 | |
1da177e4 LT |
551 | /* drop event on the floor if no one's listening */ |
552 | if (!event_is_open) | |
d550d98d | 553 | return 0; |
1da177e4 | 554 | |
5cc4a0f6 | 555 | event = kzalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC); |
1da177e4 | 556 | if (!event) |
d550d98d | 557 | return -ENOMEM; |
1da177e4 | 558 | |
8db85d4c AS |
559 | strcpy(event->device_class, device_class); |
560 | strcpy(event->bus_id, bus_id); | |
1da177e4 LT |
561 | event->type = type; |
562 | event->data = data; | |
563 | ||
564 | spin_lock_irqsave(&acpi_bus_event_lock, flags); | |
565 | list_add_tail(&event->node, &acpi_bus_event_list); | |
566 | spin_unlock_irqrestore(&acpi_bus_event_lock, flags); | |
567 | ||
568 | wake_up_interruptible(&acpi_bus_event_queue); | |
569 | ||
d550d98d | 570 | return 0; |
8db85d4c AS |
571 | |
572 | } | |
573 | ||
574 | EXPORT_SYMBOL_GPL(acpi_bus_generate_proc_event4); | |
575 | ||
576 | int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data) | |
577 | { | |
578 | if (!device) | |
579 | return -EINVAL; | |
580 | return acpi_bus_generate_proc_event4(device->pnp.device_class, | |
581 | device->pnp.bus_id, type, data); | |
1da177e4 | 582 | } |
4be44fcd | 583 | |
14e04fb3 | 584 | EXPORT_SYMBOL(acpi_bus_generate_proc_event); |
1da177e4 | 585 | |
4be44fcd | 586 | int acpi_bus_receive_event(struct acpi_bus_event *event) |
1da177e4 | 587 | { |
4be44fcd LB |
588 | unsigned long flags = 0; |
589 | struct acpi_bus_event *entry = NULL; | |
1da177e4 LT |
590 | |
591 | DECLARE_WAITQUEUE(wait, current); | |
592 | ||
1da177e4 LT |
593 | |
594 | if (!event) | |
d550d98d | 595 | return -EINVAL; |
1da177e4 LT |
596 | |
597 | if (list_empty(&acpi_bus_event_list)) { | |
598 | ||
599 | set_current_state(TASK_INTERRUPTIBLE); | |
600 | add_wait_queue(&acpi_bus_event_queue, &wait); | |
601 | ||
602 | if (list_empty(&acpi_bus_event_list)) | |
603 | schedule(); | |
604 | ||
605 | remove_wait_queue(&acpi_bus_event_queue, &wait); | |
606 | set_current_state(TASK_RUNNING); | |
607 | ||
608 | if (signal_pending(current)) | |
d550d98d | 609 | return -ERESTARTSYS; |
1da177e4 LT |
610 | } |
611 | ||
612 | spin_lock_irqsave(&acpi_bus_event_lock, flags); | |
f0a37e00 CE |
613 | if (!list_empty(&acpi_bus_event_list)) { |
614 | entry = list_entry(acpi_bus_event_list.next, | |
615 | struct acpi_bus_event, node); | |
1da177e4 | 616 | list_del(&entry->node); |
f0a37e00 | 617 | } |
1da177e4 LT |
618 | spin_unlock_irqrestore(&acpi_bus_event_lock, flags); |
619 | ||
620 | if (!entry) | |
d550d98d | 621 | return -ENODEV; |
1da177e4 LT |
622 | |
623 | memcpy(event, entry, sizeof(struct acpi_bus_event)); | |
624 | ||
625 | kfree(entry); | |
626 | ||
d550d98d | 627 | return 0; |
1da177e4 | 628 | } |
1da177e4 | 629 | |
14e04fb3 | 630 | #endif /* CONFIG_ACPI_PROC_EVENT */ |
1da177e4 LT |
631 | |
632 | /* -------------------------------------------------------------------------- | |
633 | Notification Handling | |
634 | -------------------------------------------------------------------------- */ | |
635 | ||
ff754e2e | 636 | static void acpi_bus_check_device(acpi_handle handle) |
1da177e4 | 637 | { |
ff754e2e | 638 | struct acpi_device *device; |
cdd5b8ca | 639 | acpi_status status; |
1da177e4 LT |
640 | struct acpi_device_status old_status; |
641 | ||
ff754e2e BH |
642 | if (acpi_bus_get_device(handle, &device)) |
643 | return; | |
1da177e4 | 644 | if (!device) |
cdd5b8ca | 645 | return; |
1da177e4 | 646 | |
1da177e4 LT |
647 | old_status = device->status; |
648 | ||
649 | /* | |
650 | * Make sure this device's parent is present before we go about | |
651 | * messing with the device. | |
652 | */ | |
653 | if (device->parent && !device->parent->status.present) { | |
654 | device->status = device->parent->status; | |
cdd5b8ca | 655 | return; |
1da177e4 LT |
656 | } |
657 | ||
658 | status = acpi_bus_get_status(device); | |
659 | if (ACPI_FAILURE(status)) | |
cdd5b8ca | 660 | return; |
1da177e4 LT |
661 | |
662 | if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status)) | |
cdd5b8ca | 663 | return; |
1da177e4 | 664 | |
1da177e4 LT |
665 | /* |
666 | * Device Insertion/Removal | |
667 | */ | |
668 | if ((device->status.present) && !(old_status.present)) { | |
669 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device insertion detected\n")); | |
670 | /* TBD: Handle device insertion */ | |
4be44fcd | 671 | } else if (!(device->status.present) && (old_status.present)) { |
1da177e4 LT |
672 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n")); |
673 | /* TBD: Handle device removal */ | |
674 | } | |
1da177e4 LT |
675 | } |
676 | ||
ff754e2e | 677 | static void acpi_bus_check_scope(acpi_handle handle) |
1da177e4 | 678 | { |
1da177e4 | 679 | /* Status Change? */ |
ff754e2e | 680 | acpi_bus_check_device(handle); |
1da177e4 | 681 | |
1da177e4 LT |
682 | /* |
683 | * TBD: Enumerate child devices within this device's scope and | |
684 | * run acpi_bus_check_device()'s on them. | |
685 | */ | |
1da177e4 LT |
686 | } |
687 | ||
6bd00a61 SL |
688 | static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list); |
689 | int register_acpi_bus_notifier(struct notifier_block *nb) | |
690 | { | |
691 | return blocking_notifier_chain_register(&acpi_bus_notify_list, nb); | |
692 | } | |
693 | EXPORT_SYMBOL_GPL(register_acpi_bus_notifier); | |
694 | ||
695 | void unregister_acpi_bus_notifier(struct notifier_block *nb) | |
696 | { | |
697 | blocking_notifier_chain_unregister(&acpi_bus_notify_list, nb); | |
698 | } | |
699 | EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier); | |
700 | ||
1da177e4 LT |
701 | /** |
702 | * acpi_bus_notify | |
703 | * --------------- | |
704 | * Callback for all 'system-level' device notifications (values 0x00-0x7F). | |
705 | */ | |
4be44fcd | 706 | static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) |
1da177e4 | 707 | { |
4be44fcd | 708 | struct acpi_device *device = NULL; |
6d278131 | 709 | struct acpi_driver *driver; |
1da177e4 | 710 | |
02c37bd8 BH |
711 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n", |
712 | type, handle)); | |
713 | ||
6bd00a61 SL |
714 | blocking_notifier_call_chain(&acpi_bus_notify_list, |
715 | type, (void *)handle); | |
1da177e4 | 716 | |
1da177e4 LT |
717 | switch (type) { |
718 | ||
719 | case ACPI_NOTIFY_BUS_CHECK: | |
ff754e2e | 720 | acpi_bus_check_scope(handle); |
aafbcd16 | 721 | /* |
1da177e4 | 722 | * TBD: We'll need to outsource certain events to non-ACPI |
4be44fcd | 723 | * drivers via the device manager (device.c). |
1da177e4 LT |
724 | */ |
725 | break; | |
726 | ||
727 | case ACPI_NOTIFY_DEVICE_CHECK: | |
ff754e2e | 728 | acpi_bus_check_device(handle); |
aafbcd16 | 729 | /* |
1da177e4 | 730 | * TBD: We'll need to outsource certain events to non-ACPI |
4be44fcd | 731 | * drivers via the device manager (device.c). |
1da177e4 LT |
732 | */ |
733 | break; | |
734 | ||
735 | case ACPI_NOTIFY_DEVICE_WAKE: | |
1da177e4 LT |
736 | /* TBD */ |
737 | break; | |
738 | ||
739 | case ACPI_NOTIFY_EJECT_REQUEST: | |
1da177e4 LT |
740 | /* TBD */ |
741 | break; | |
742 | ||
743 | case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: | |
1da177e4 LT |
744 | /* TBD: Exactly what does 'light' mean? */ |
745 | break; | |
746 | ||
747 | case ACPI_NOTIFY_FREQUENCY_MISMATCH: | |
1da177e4 LT |
748 | /* TBD */ |
749 | break; | |
750 | ||
751 | case ACPI_NOTIFY_BUS_MODE_MISMATCH: | |
1da177e4 LT |
752 | /* TBD */ |
753 | break; | |
754 | ||
755 | case ACPI_NOTIFY_POWER_FAULT: | |
1da177e4 LT |
756 | /* TBD */ |
757 | break; | |
758 | ||
759 | default: | |
4be44fcd LB |
760 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
761 | "Received unknown/unsupported notification [%08x]\n", | |
762 | type)); | |
1da177e4 LT |
763 | break; |
764 | } | |
765 | ||
ff754e2e BH |
766 | acpi_bus_get_device(handle, &device); |
767 | if (device) { | |
768 | driver = device->driver; | |
769 | if (driver && driver->ops.notify && | |
770 | (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) | |
771 | driver->ops.notify(device, type); | |
772 | } | |
1da177e4 LT |
773 | } |
774 | ||
775 | /* -------------------------------------------------------------------------- | |
776 | Initialization/Cleanup | |
777 | -------------------------------------------------------------------------- */ | |
778 | ||
4be44fcd | 779 | static int __init acpi_bus_init_irq(void) |
1da177e4 | 780 | { |
4be44fcd LB |
781 | acpi_status status = AE_OK; |
782 | union acpi_object arg = { ACPI_TYPE_INTEGER }; | |
783 | struct acpi_object_list arg_list = { 1, &arg }; | |
784 | char *message = NULL; | |
1da177e4 | 785 | |
1da177e4 | 786 | |
aafbcd16 | 787 | /* |
1da177e4 LT |
788 | * Let the system know what interrupt model we are using by |
789 | * evaluating the \_PIC object, if exists. | |
790 | */ | |
791 | ||
792 | switch (acpi_irq_model) { | |
793 | case ACPI_IRQ_MODEL_PIC: | |
794 | message = "PIC"; | |
795 | break; | |
796 | case ACPI_IRQ_MODEL_IOAPIC: | |
797 | message = "IOAPIC"; | |
798 | break; | |
799 | case ACPI_IRQ_MODEL_IOSAPIC: | |
800 | message = "IOSAPIC"; | |
801 | break; | |
3948ec94 JK |
802 | case ACPI_IRQ_MODEL_PLATFORM: |
803 | message = "platform specific model"; | |
804 | break; | |
1da177e4 LT |
805 | default: |
806 | printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n"); | |
d550d98d | 807 | return -ENODEV; |
1da177e4 LT |
808 | } |
809 | ||
810 | printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message); | |
811 | ||
812 | arg.integer.value = acpi_irq_model; | |
813 | ||
814 | status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL); | |
815 | if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { | |
a6fc6720 | 816 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC")); |
d550d98d | 817 | return -ENODEV; |
1da177e4 LT |
818 | } |
819 | ||
d550d98d | 820 | return 0; |
1da177e4 LT |
821 | } |
822 | ||
67a119f9 | 823 | u8 acpi_gbl_permanent_mmap; |
ad71860a AS |
824 | |
825 | ||
4be44fcd | 826 | void __init acpi_early_init(void) |
1da177e4 | 827 | { |
4be44fcd | 828 | acpi_status status = AE_OK; |
1da177e4 LT |
829 | |
830 | if (acpi_disabled) | |
d550d98d | 831 | return; |
1da177e4 | 832 | |
61686124 BM |
833 | printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION); |
834 | ||
1da177e4 LT |
835 | /* enable workarounds, unless strict ACPI spec. compliance */ |
836 | if (!acpi_strict) | |
837 | acpi_gbl_enable_interpreter_slack = TRUE; | |
838 | ||
ad71860a AS |
839 | acpi_gbl_permanent_mmap = 1; |
840 | ||
aa2110cb LM |
841 | /* |
842 | * If the machine falls into the DMI check table, | |
843 | * DSDT will be copied to memory | |
844 | */ | |
845 | dmi_check_system(dsdt_dmi_table); | |
846 | ||
ad71860a AS |
847 | status = acpi_reallocate_root_table(); |
848 | if (ACPI_FAILURE(status)) { | |
849 | printk(KERN_ERR PREFIX | |
850 | "Unable to reallocate ACPI tables\n"); | |
851 | goto error0; | |
852 | } | |
853 | ||
1da177e4 LT |
854 | status = acpi_initialize_subsystem(); |
855 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
856 | printk(KERN_ERR PREFIX |
857 | "Unable to initialize the ACPI Interpreter\n"); | |
1da177e4 LT |
858 | goto error0; |
859 | } | |
860 | ||
861 | status = acpi_load_tables(); | |
862 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
863 | printk(KERN_ERR PREFIX |
864 | "Unable to load the System Description Tables\n"); | |
1da177e4 LT |
865 | goto error0; |
866 | } | |
867 | ||
1da177e4 LT |
868 | #ifdef CONFIG_X86 |
869 | if (!acpi_ioapic) { | |
1da177e4 | 870 | /* compatible (0) means level (3) */ |
5f3b1a8b AS |
871 | if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) { |
872 | acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK; | |
873 | acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL; | |
874 | } | |
1da177e4 | 875 | /* Set PIC-mode SCI trigger type */ |
cee324b1 | 876 | acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt, |
5f3b1a8b | 877 | (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2); |
1da177e4 | 878 | } else { |
1da177e4 | 879 | /* |
cee324b1 | 880 | * now that acpi_gbl_FADT is initialized, |
1da177e4 LT |
881 | * update it with result from INT_SRC_OVR parsing |
882 | */ | |
cee324b1 | 883 | acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi; |
1da177e4 LT |
884 | } |
885 | #endif | |
886 | ||
4be44fcd LB |
887 | status = |
888 | acpi_enable_subsystem(~ | |
889 | (ACPI_NO_HARDWARE_INIT | | |
890 | ACPI_NO_ACPI_ENABLE)); | |
1da177e4 LT |
891 | if (ACPI_FAILURE(status)) { |
892 | printk(KERN_ERR PREFIX "Unable to enable ACPI\n"); | |
893 | goto error0; | |
894 | } | |
895 | ||
d550d98d | 896 | return; |
1da177e4 | 897 | |
4be44fcd | 898 | error0: |
1da177e4 | 899 | disable_acpi(); |
d550d98d | 900 | return; |
1da177e4 LT |
901 | } |
902 | ||
4be44fcd | 903 | static int __init acpi_bus_init(void) |
1da177e4 | 904 | { |
4be44fcd LB |
905 | int result = 0; |
906 | acpi_status status = AE_OK; | |
907 | extern acpi_status acpi_os_initialize1(void); | |
1da177e4 | 908 | |
176f9c18 | 909 | acpi_os_initialize1(); |
1da177e4 | 910 | |
4be44fcd LB |
911 | status = |
912 | acpi_enable_subsystem(ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE); | |
1da177e4 | 913 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
914 | printk(KERN_ERR PREFIX |
915 | "Unable to start the ACPI Interpreter\n"); | |
1da177e4 LT |
916 | goto error1; |
917 | } | |
918 | ||
1da177e4 LT |
919 | /* |
920 | * ACPI 2.0 requires the EC driver to be loaded and work before | |
921 | * the EC device is found in the namespace (i.e. before acpi_initialize_objects() | |
922 | * is called). | |
923 | * | |
aafbcd16 | 924 | * This is accomplished by looking for the ECDT table, and getting |
1da177e4 LT |
925 | * the EC parameters out of that. |
926 | */ | |
927 | status = acpi_ec_ecdt_probe(); | |
928 | /* Ignore result. Not having an ECDT is not fatal. */ | |
1da177e4 | 929 | |
3563ff96 SL |
930 | acpi_bus_osc_support(); |
931 | ||
1da177e4 LT |
932 | status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION); |
933 | if (ACPI_FAILURE(status)) { | |
934 | printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n"); | |
935 | goto error1; | |
936 | } | |
937 | ||
78f16996 AC |
938 | acpi_early_processor_set_pdc(); |
939 | ||
455c8793 ZY |
940 | /* |
941 | * Maybe EC region is required at bus_scan/acpi_get_devices. So it | |
942 | * is necessary to enable it as early as possible. | |
943 | */ | |
944 | acpi_boot_ec_enable(); | |
945 | ||
1da177e4 LT |
946 | printk(KERN_INFO PREFIX "Interpreter enabled\n"); |
947 | ||
aafbcd16 AS |
948 | /* Initialize sleep structures */ |
949 | acpi_sleep_init(); | |
950 | ||
1da177e4 LT |
951 | /* |
952 | * Get the system interrupt model and evaluate \_PIC. | |
953 | */ | |
954 | result = acpi_bus_init_irq(); | |
955 | if (result) | |
956 | goto error1; | |
957 | ||
958 | /* | |
959 | * Register the for all standard device notifications. | |
960 | */ | |
4be44fcd LB |
961 | status = |
962 | acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, | |
963 | &acpi_bus_notify, NULL); | |
1da177e4 | 964 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
965 | printk(KERN_ERR PREFIX |
966 | "Unable to register for device notifications\n"); | |
1da177e4 LT |
967 | goto error1; |
968 | } | |
969 | ||
970 | /* | |
971 | * Create the top ACPI proc directory | |
972 | */ | |
973 | acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL); | |
974 | ||
d550d98d | 975 | return 0; |
1da177e4 LT |
976 | |
977 | /* Mimic structured exception handling */ | |
4be44fcd | 978 | error1: |
1da177e4 | 979 | acpi_terminate(); |
d550d98d | 980 | return -ENODEV; |
1da177e4 LT |
981 | } |
982 | ||
99e0d2fc | 983 | struct kobject *acpi_kobj; |
1da177e4 | 984 | |
4be44fcd | 985 | static int __init acpi_init(void) |
1da177e4 | 986 | { |
4be44fcd | 987 | int result = 0; |
1da177e4 | 988 | |
1da177e4 | 989 | |
1da177e4 LT |
990 | if (acpi_disabled) { |
991 | printk(KERN_INFO PREFIX "Interpreter disabled.\n"); | |
d550d98d | 992 | return -ENODEV; |
1da177e4 LT |
993 | } |
994 | ||
f62ed9e3 | 995 | acpi_kobj = kobject_create_and_add("acpi", firmware_kobj); |
99e0d2fc | 996 | if (!acpi_kobj) { |
96b2dd1f | 997 | printk(KERN_WARNING "%s: kset create error\n", __func__); |
99e0d2fc GKH |
998 | acpi_kobj = NULL; |
999 | } | |
1da177e4 | 1000 | |
0e46517d | 1001 | init_acpi_device_notify(); |
1da177e4 LT |
1002 | result = acpi_bus_init(); |
1003 | ||
1004 | if (!result) { | |
7752d5cf | 1005 | pci_mmcfg_late_init(); |
9f9adecd LB |
1006 | if (!(pm_flags & PM_APM)) |
1007 | pm_flags |= PM_ACPI; | |
1da177e4 | 1008 | else { |
4be44fcd LB |
1009 | printk(KERN_INFO PREFIX |
1010 | "APM is already active, exiting\n"); | |
1da177e4 LT |
1011 | disable_acpi(); |
1012 | result = -ENODEV; | |
1013 | } | |
1da177e4 LT |
1014 | } else |
1015 | disable_acpi(); | |
81d0273d BH |
1016 | |
1017 | if (acpi_disabled) | |
1018 | return result; | |
1019 | ||
6415e12b ZY |
1020 | /* |
1021 | * If the laptop falls into the DMI check table, the power state check | |
58f87ed0 | 1022 | * will be disabled in the course of device power transition. |
6415e12b ZY |
1023 | */ |
1024 | dmi_check_system(power_nocheck_dmi_table); | |
e747f274 BH |
1025 | |
1026 | acpi_scan_init(); | |
a5f820fe | 1027 | acpi_ec_init(); |
44515374 | 1028 | acpi_power_init(); |
1c8fce27 | 1029 | acpi_sysfs_init(); |
a25ee920 | 1030 | acpi_debugfs_init(); |
9cee43e0 | 1031 | acpi_sleep_proc_init(); |
201b8c65 | 1032 | acpi_wakeup_device_init(); |
d550d98d | 1033 | return result; |
1da177e4 LT |
1034 | } |
1035 | ||
1036 | subsys_initcall(acpi_init); |