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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 - " | |
58 | "disable power check in power transistion\n", id->ident); | |
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 | /* | |
83 | * Insyde BIOS on some TOSHIBA machines corrupt the DSDT. | |
84 | * https://bugzilla.kernel.org/show_bug.cgi?id=14679 | |
85 | */ | |
86 | { | |
87 | .callback = set_copy_dsdt, | |
88 | .ident = "TOSHIBA Satellite A505", | |
89 | .matches = { | |
90 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
91 | DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A505"), | |
92 | }, | |
93 | }, | |
94 | { | |
95 | .callback = set_copy_dsdt, | |
96 | .ident = "TOSHIBA Satellite L505D", | |
97 | .matches = { | |
98 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
99 | DMI_MATCH(DMI_PRODUCT_NAME, "Satellite L505D"), | |
100 | }, | |
cce4f632 LM |
101 | }, |
102 | {} | |
aa2110cb | 103 | }; |
cce4f632 LM |
104 | #else |
105 | static struct dmi_system_id dsdt_dmi_table[] __initdata = { | |
106 | {} | |
107 | }; | |
108 | #endif | |
aa2110cb | 109 | |
1da177e4 LT |
110 | /* -------------------------------------------------------------------------- |
111 | Device Management | |
112 | -------------------------------------------------------------------------- */ | |
113 | ||
4be44fcd | 114 | int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) |
1da177e4 | 115 | { |
4be44fcd | 116 | acpi_status status = AE_OK; |
1da177e4 | 117 | |
1da177e4 LT |
118 | |
119 | if (!device) | |
d550d98d | 120 | return -EINVAL; |
1da177e4 LT |
121 | |
122 | /* TBD: Support fixed-feature devices */ | |
123 | ||
4be44fcd | 124 | status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device); |
1da177e4 | 125 | if (ACPI_FAILURE(status) || !*device) { |
9805cb76 LB |
126 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", |
127 | handle)); | |
d550d98d | 128 | return -ENODEV; |
1da177e4 LT |
129 | } |
130 | ||
d550d98d | 131 | return 0; |
1da177e4 | 132 | } |
4be44fcd | 133 | |
1da177e4 LT |
134 | EXPORT_SYMBOL(acpi_bus_get_device); |
135 | ||
402ac536 BH |
136 | acpi_status acpi_bus_get_status_handle(acpi_handle handle, |
137 | unsigned long long *sta) | |
1da177e4 | 138 | { |
402ac536 | 139 | acpi_status status; |
4be44fcd | 140 | |
402ac536 BH |
141 | status = acpi_evaluate_integer(handle, "_STA", NULL, sta); |
142 | if (ACPI_SUCCESS(status)) | |
143 | return AE_OK; | |
1da177e4 | 144 | |
402ac536 BH |
145 | if (status == AE_NOT_FOUND) { |
146 | *sta = ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | | |
147 | ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING; | |
148 | return AE_OK; | |
1da177e4 | 149 | } |
402ac536 BH |
150 | return status; |
151 | } | |
1da177e4 | 152 | |
402ac536 BH |
153 | int acpi_bus_get_status(struct acpi_device *device) |
154 | { | |
155 | acpi_status status; | |
156 | unsigned long long sta; | |
157 | ||
158 | status = acpi_bus_get_status_handle(device->handle, &sta); | |
159 | if (ACPI_FAILURE(status)) | |
160 | return -ENODEV; | |
161 | ||
162 | STRUCT_TO_INT(device->status) = (int) sta; | |
1da177e4 LT |
163 | |
164 | if (device->status.functional && !device->status.present) { | |
39a0ad87 ZY |
165 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: " |
166 | "functional but not present;\n", | |
167 | device->pnp.bus_id, | |
168 | (u32) STRUCT_TO_INT(device->status))); | |
1da177e4 LT |
169 | } |
170 | ||
4be44fcd LB |
171 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n", |
172 | device->pnp.bus_id, | |
173 | (u32) STRUCT_TO_INT(device->status))); | |
d550d98d | 174 | return 0; |
1da177e4 | 175 | } |
4be44fcd | 176 | EXPORT_SYMBOL(acpi_bus_get_status); |
1da177e4 | 177 | |
20733939 | 178 | void acpi_bus_private_data_handler(acpi_handle handle, |
8e4319c4 | 179 | void *context) |
20733939 ZR |
180 | { |
181 | return; | |
182 | } | |
183 | EXPORT_SYMBOL(acpi_bus_private_data_handler); | |
184 | ||
185 | int acpi_bus_get_private_data(acpi_handle handle, void **data) | |
186 | { | |
187 | acpi_status status = AE_OK; | |
188 | ||
189 | if (!*data) | |
190 | return -EINVAL; | |
191 | ||
192 | status = acpi_get_data(handle, acpi_bus_private_data_handler, data); | |
193 | if (ACPI_FAILURE(status) || !*data) { | |
194 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", | |
195 | handle)); | |
196 | return -ENODEV; | |
197 | } | |
198 | ||
199 | return 0; | |
200 | } | |
201 | EXPORT_SYMBOL(acpi_bus_get_private_data); | |
202 | ||
1da177e4 LT |
203 | /* -------------------------------------------------------------------------- |
204 | Power Management | |
205 | -------------------------------------------------------------------------- */ | |
206 | ||
4be44fcd | 207 | int acpi_bus_get_power(acpi_handle handle, int *state) |
1da177e4 | 208 | { |
4be44fcd LB |
209 | int result = 0; |
210 | acpi_status status = 0; | |
211 | struct acpi_device *device = NULL; | |
27663c58 | 212 | unsigned long long psc = 0; |
1da177e4 | 213 | |
1da177e4 LT |
214 | |
215 | result = acpi_bus_get_device(handle, &device); | |
216 | if (result) | |
d550d98d | 217 | return result; |
1da177e4 LT |
218 | |
219 | *state = ACPI_STATE_UNKNOWN; | |
220 | ||
221 | if (!device->flags.power_manageable) { | |
222 | /* TBD: Non-recursive algorithm for walking up hierarchy */ | |
223 | if (device->parent) | |
224 | *state = device->parent->power.state; | |
225 | else | |
226 | *state = ACPI_STATE_D0; | |
4be44fcd | 227 | } else { |
1da177e4 | 228 | /* |
aafbcd16 | 229 | * Get the device's power state either directly (via _PSC) or |
1da177e4 LT |
230 | * indirectly (via power resources). |
231 | */ | |
0c99c528 ZR |
232 | if (device->power.flags.power_resources) { |
233 | result = acpi_power_get_inferred_state(device); | |
234 | if (result) | |
235 | return result; | |
236 | } else if (device->power.flags.explicit_get) { | |
4be44fcd LB |
237 | status = acpi_evaluate_integer(device->handle, "_PSC", |
238 | NULL, &psc); | |
1da177e4 | 239 | if (ACPI_FAILURE(status)) |
d550d98d | 240 | return -ENODEV; |
4be44fcd | 241 | device->power.state = (int)psc; |
1da177e4 LT |
242 | } |
243 | ||
244 | *state = device->power.state; | |
245 | } | |
246 | ||
247 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is D%d\n", | |
4be44fcd | 248 | device->pnp.bus_id, device->power.state)); |
1da177e4 | 249 | |
d550d98d | 250 | return 0; |
1da177e4 | 251 | } |
1da177e4 | 252 | |
4be44fcd | 253 | EXPORT_SYMBOL(acpi_bus_get_power); |
1da177e4 | 254 | |
4be44fcd | 255 | int acpi_bus_set_power(acpi_handle handle, int state) |
1da177e4 | 256 | { |
4be44fcd LB |
257 | int result = 0; |
258 | acpi_status status = AE_OK; | |
259 | struct acpi_device *device = NULL; | |
260 | char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' }; | |
1da177e4 | 261 | |
1da177e4 LT |
262 | |
263 | result = acpi_bus_get_device(handle, &device); | |
264 | if (result) | |
d550d98d | 265 | return result; |
1da177e4 LT |
266 | |
267 | if ((state < ACPI_STATE_D0) || (state > ACPI_STATE_D3)) | |
d550d98d | 268 | return -EINVAL; |
1da177e4 LT |
269 | |
270 | /* Make sure this is a valid target state */ | |
271 | ||
272 | if (!device->flags.power_manageable) { | |
9805cb76 | 273 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device `[%s]' is not power manageable\n", |
19c38de8 | 274 | kobject_name(&device->dev.kobj))); |
d550d98d | 275 | return -ENODEV; |
1da177e4 | 276 | } |
b913100d | 277 | /* |
c35923bc | 278 | * Get device's current power state |
b913100d | 279 | */ |
f5adfaa3 ZY |
280 | if (!acpi_power_nocheck) { |
281 | /* | |
282 | * Maybe the incorrect power state is returned on the bogus | |
283 | * bios, which is different with the real power state. | |
284 | * For example: the bios returns D0 state and the real power | |
285 | * state is D3. OS expects to set the device to D0 state. In | |
286 | * such case if OS uses the power state returned by the BIOS, | |
287 | * the device can't be transisted to the correct power state. | |
288 | * So if the acpi_power_nocheck is set, it is unnecessary to | |
289 | * get the power state by calling acpi_bus_get_power. | |
290 | */ | |
291 | acpi_bus_get_power(device->handle, &device->power.state); | |
292 | } | |
ec68373c | 293 | if ((state == device->power.state) && !device->flags.force_power_state) { |
b1028c54 KK |
294 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n", |
295 | state)); | |
296 | return 0; | |
1da177e4 | 297 | } |
b1028c54 | 298 | |
1da177e4 | 299 | if (!device->power.states[state].flags.valid) { |
cece9296 | 300 | printk(KERN_WARNING PREFIX "Device does not support D%d\n", state); |
d550d98d | 301 | return -ENODEV; |
1da177e4 LT |
302 | } |
303 | if (device->parent && (state < device->parent->power.state)) { | |
cece9296 | 304 | printk(KERN_WARNING PREFIX |
a6fc6720 | 305 | "Cannot set device to a higher-powered" |
cece9296 | 306 | " state than parent\n"); |
d550d98d | 307 | return -ENODEV; |
1da177e4 LT |
308 | } |
309 | ||
310 | /* | |
311 | * Transition Power | |
312 | * ---------------- | |
313 | * On transitions to a high-powered state we first apply power (via | |
314 | * power resources) then evalute _PSx. Conversly for transitions to | |
315 | * a lower-powered state. | |
b913100d | 316 | */ |
1da177e4 LT |
317 | if (state < device->power.state) { |
318 | if (device->power.flags.power_resources) { | |
319 | result = acpi_power_transition(device, state); | |
320 | if (result) | |
321 | goto end; | |
322 | } | |
323 | if (device->power.states[state].flags.explicit_set) { | |
4be44fcd LB |
324 | status = acpi_evaluate_object(device->handle, |
325 | object_name, NULL, NULL); | |
1da177e4 LT |
326 | if (ACPI_FAILURE(status)) { |
327 | result = -ENODEV; | |
328 | goto end; | |
329 | } | |
330 | } | |
4be44fcd | 331 | } else { |
1da177e4 | 332 | if (device->power.states[state].flags.explicit_set) { |
4be44fcd LB |
333 | status = acpi_evaluate_object(device->handle, |
334 | object_name, NULL, NULL); | |
1da177e4 LT |
335 | if (ACPI_FAILURE(status)) { |
336 | result = -ENODEV; | |
337 | goto end; | |
338 | } | |
339 | } | |
340 | if (device->power.flags.power_resources) { | |
341 | result = acpi_power_transition(device, state); | |
342 | if (result) | |
343 | goto end; | |
344 | } | |
345 | } | |
346 | ||
4be44fcd | 347 | end: |
1da177e4 | 348 | if (result) |
cece9296 | 349 | printk(KERN_WARNING PREFIX |
ddc50b6a | 350 | "Device [%s] failed to transition to D%d\n", |
cece9296 | 351 | device->pnp.bus_id, state); |
5e32132b SL |
352 | else { |
353 | device->power.state = state; | |
4be44fcd LB |
354 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
355 | "Device [%s] transitioned to D%d\n", | |
356 | device->pnp.bus_id, state)); | |
5e32132b | 357 | } |
1da177e4 | 358 | |
d550d98d | 359 | return result; |
1da177e4 | 360 | } |
1da177e4 | 361 | |
4be44fcd | 362 | EXPORT_SYMBOL(acpi_bus_set_power); |
1da177e4 | 363 | |
3737b2b1 RW |
364 | bool acpi_bus_power_manageable(acpi_handle handle) |
365 | { | |
366 | struct acpi_device *device; | |
367 | int result; | |
368 | ||
369 | result = acpi_bus_get_device(handle, &device); | |
370 | return result ? false : device->flags.power_manageable; | |
371 | } | |
372 | ||
373 | EXPORT_SYMBOL(acpi_bus_power_manageable); | |
374 | ||
eb9d0fe4 RW |
375 | bool acpi_bus_can_wakeup(acpi_handle handle) |
376 | { | |
377 | struct acpi_device *device; | |
378 | int result; | |
379 | ||
380 | result = acpi_bus_get_device(handle, &device); | |
381 | return result ? false : device->wakeup.flags.valid; | |
382 | } | |
383 | ||
384 | EXPORT_SYMBOL(acpi_bus_can_wakeup); | |
385 | ||
70023de8 SL |
386 | static void acpi_print_osc_error(acpi_handle handle, |
387 | struct acpi_osc_context *context, char *error) | |
388 | { | |
389 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER}; | |
390 | int i; | |
391 | ||
392 | if (ACPI_FAILURE(acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer))) | |
393 | printk(KERN_DEBUG "%s\n", error); | |
394 | else { | |
395 | printk(KERN_DEBUG "%s:%s\n", (char *)buffer.pointer, error); | |
396 | kfree(buffer.pointer); | |
397 | } | |
398 | printk(KERN_DEBUG"_OSC request data:"); | |
399 | for (i = 0; i < context->cap.length; i += sizeof(u32)) | |
400 | printk("%x ", *((u32 *)(context->cap.pointer + i))); | |
401 | printk("\n"); | |
402 | } | |
403 | ||
70023de8 SL |
404 | static acpi_status acpi_str_to_uuid(char *str, u8 *uuid) |
405 | { | |
406 | int i; | |
407 | static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21, | |
408 | 24, 26, 28, 30, 32, 34}; | |
409 | ||
410 | if (strlen(str) != 36) | |
411 | return AE_BAD_PARAMETER; | |
412 | for (i = 0; i < 36; i++) { | |
413 | if (i == 8 || i == 13 || i == 18 || i == 23) { | |
414 | if (str[i] != '-') | |
415 | return AE_BAD_PARAMETER; | |
416 | } else if (!isxdigit(str[i])) | |
417 | return AE_BAD_PARAMETER; | |
418 | } | |
419 | for (i = 0; i < 16; i++) { | |
965fd9e9 AS |
420 | uuid[i] = hex_to_bin(str[opc_map_to_uuid[i]]) << 4; |
421 | uuid[i] |= hex_to_bin(str[opc_map_to_uuid[i] + 1]); | |
70023de8 SL |
422 | } |
423 | return AE_OK; | |
424 | } | |
425 | ||
426 | acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) | |
427 | { | |
428 | acpi_status status; | |
429 | struct acpi_object_list input; | |
430 | union acpi_object in_params[4]; | |
431 | union acpi_object *out_obj; | |
432 | u8 uuid[16]; | |
433 | u32 errors; | |
9dc130fc | 434 | struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; |
70023de8 SL |
435 | |
436 | if (!context) | |
437 | return AE_ERROR; | |
438 | if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid))) | |
439 | return AE_ERROR; | |
440 | context->ret.length = ACPI_ALLOCATE_BUFFER; | |
441 | context->ret.pointer = NULL; | |
442 | ||
443 | /* Setting up input parameters */ | |
444 | input.count = 4; | |
445 | input.pointer = in_params; | |
446 | in_params[0].type = ACPI_TYPE_BUFFER; | |
447 | in_params[0].buffer.length = 16; | |
448 | in_params[0].buffer.pointer = uuid; | |
449 | in_params[1].type = ACPI_TYPE_INTEGER; | |
450 | in_params[1].integer.value = context->rev; | |
451 | in_params[2].type = ACPI_TYPE_INTEGER; | |
452 | in_params[2].integer.value = context->cap.length/sizeof(u32); | |
453 | in_params[3].type = ACPI_TYPE_BUFFER; | |
454 | in_params[3].buffer.length = context->cap.length; | |
455 | in_params[3].buffer.pointer = context->cap.pointer; | |
456 | ||
9dc130fc | 457 | status = acpi_evaluate_object(handle, "_OSC", &input, &output); |
70023de8 SL |
458 | if (ACPI_FAILURE(status)) |
459 | return status; | |
460 | ||
9dc130fc | 461 | if (!output.length) |
70023de8 SL |
462 | return AE_NULL_OBJECT; |
463 | ||
9dc130fc SL |
464 | out_obj = output.pointer; |
465 | if (out_obj->type != ACPI_TYPE_BUFFER | |
466 | || out_obj->buffer.length != context->cap.length) { | |
70023de8 SL |
467 | acpi_print_osc_error(handle, context, |
468 | "_OSC evaluation returned wrong type"); | |
469 | status = AE_TYPE; | |
470 | goto out_kfree; | |
471 | } | |
472 | /* Need to ignore the bit0 in result code */ | |
473 | errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0); | |
474 | if (errors) { | |
475 | if (errors & OSC_REQUEST_ERROR) | |
476 | acpi_print_osc_error(handle, context, | |
477 | "_OSC request failed"); | |
478 | if (errors & OSC_INVALID_UUID_ERROR) | |
479 | acpi_print_osc_error(handle, context, | |
480 | "_OSC invalid UUID"); | |
481 | if (errors & OSC_INVALID_REVISION_ERROR) | |
482 | acpi_print_osc_error(handle, context, | |
483 | "_OSC invalid revision"); | |
484 | if (errors & OSC_CAPABILITIES_MASK_ERROR) { | |
485 | if (((u32 *)context->cap.pointer)[OSC_QUERY_TYPE] | |
486 | & OSC_QUERY_ENABLE) | |
487 | goto out_success; | |
488 | status = AE_SUPPORT; | |
489 | goto out_kfree; | |
490 | } | |
491 | status = AE_ERROR; | |
492 | goto out_kfree; | |
493 | } | |
494 | out_success: | |
9dc130fc SL |
495 | context->ret.length = out_obj->buffer.length; |
496 | context->ret.pointer = kmalloc(context->ret.length, GFP_KERNEL); | |
497 | if (!context->ret.pointer) { | |
498 | status = AE_NO_MEMORY; | |
499 | goto out_kfree; | |
500 | } | |
501 | memcpy(context->ret.pointer, out_obj->buffer.pointer, | |
502 | context->ret.length); | |
503 | status = AE_OK; | |
70023de8 SL |
504 | |
505 | out_kfree: | |
9dc130fc SL |
506 | kfree(output.pointer); |
507 | if (status != AE_OK) | |
508 | context->ret.pointer = NULL; | |
70023de8 SL |
509 | return status; |
510 | } | |
511 | EXPORT_SYMBOL(acpi_run_osc); | |
512 | ||
3563ff96 SL |
513 | static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48"; |
514 | static void acpi_bus_osc_support(void) | |
515 | { | |
516 | u32 capbuf[2]; | |
517 | struct acpi_osc_context context = { | |
518 | .uuid_str = sb_uuid_str, | |
519 | .rev = 1, | |
520 | .cap.length = 8, | |
521 | .cap.pointer = capbuf, | |
522 | }; | |
523 | acpi_handle handle; | |
524 | ||
525 | capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE; | |
526 | capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */ | |
6a4e2b75 ZY |
527 | #if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\ |
528 | defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE) | |
3563ff96 SL |
529 | capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT; |
530 | #endif | |
6a4e2b75 ZY |
531 | |
532 | #if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE) | |
533 | capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT; | |
534 | #endif | |
3563ff96 SL |
535 | if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) |
536 | return; | |
537 | if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) | |
538 | kfree(context.ret.pointer); | |
539 | /* do we need to check the returned cap? Sounds no */ | |
540 | } | |
541 | ||
1da177e4 LT |
542 | /* -------------------------------------------------------------------------- |
543 | Event Management | |
544 | -------------------------------------------------------------------------- */ | |
545 | ||
14e04fb3 | 546 | #ifdef CONFIG_ACPI_PROC_EVENT |
1da177e4 LT |
547 | static DEFINE_SPINLOCK(acpi_bus_event_lock); |
548 | ||
549 | LIST_HEAD(acpi_bus_event_list); | |
550 | DECLARE_WAIT_QUEUE_HEAD(acpi_bus_event_queue); | |
551 | ||
4be44fcd | 552 | extern int event_is_open; |
1da177e4 | 553 | |
8db85d4c | 554 | int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id, u8 type, int data) |
1da177e4 | 555 | { |
8db85d4c | 556 | struct acpi_bus_event *event; |
4be44fcd | 557 | unsigned long flags = 0; |
1da177e4 | 558 | |
1da177e4 LT |
559 | /* drop event on the floor if no one's listening */ |
560 | if (!event_is_open) | |
d550d98d | 561 | return 0; |
1da177e4 | 562 | |
5cc4a0f6 | 563 | event = kzalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC); |
1da177e4 | 564 | if (!event) |
d550d98d | 565 | return -ENOMEM; |
1da177e4 | 566 | |
8db85d4c AS |
567 | strcpy(event->device_class, device_class); |
568 | strcpy(event->bus_id, bus_id); | |
1da177e4 LT |
569 | event->type = type; |
570 | event->data = data; | |
571 | ||
572 | spin_lock_irqsave(&acpi_bus_event_lock, flags); | |
573 | list_add_tail(&event->node, &acpi_bus_event_list); | |
574 | spin_unlock_irqrestore(&acpi_bus_event_lock, flags); | |
575 | ||
576 | wake_up_interruptible(&acpi_bus_event_queue); | |
577 | ||
d550d98d | 578 | return 0; |
8db85d4c AS |
579 | |
580 | } | |
581 | ||
582 | EXPORT_SYMBOL_GPL(acpi_bus_generate_proc_event4); | |
583 | ||
584 | int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data) | |
585 | { | |
586 | if (!device) | |
587 | return -EINVAL; | |
588 | return acpi_bus_generate_proc_event4(device->pnp.device_class, | |
589 | device->pnp.bus_id, type, data); | |
1da177e4 | 590 | } |
4be44fcd | 591 | |
14e04fb3 | 592 | EXPORT_SYMBOL(acpi_bus_generate_proc_event); |
1da177e4 | 593 | |
4be44fcd | 594 | int acpi_bus_receive_event(struct acpi_bus_event *event) |
1da177e4 | 595 | { |
4be44fcd LB |
596 | unsigned long flags = 0; |
597 | struct acpi_bus_event *entry = NULL; | |
1da177e4 LT |
598 | |
599 | DECLARE_WAITQUEUE(wait, current); | |
600 | ||
1da177e4 LT |
601 | |
602 | if (!event) | |
d550d98d | 603 | return -EINVAL; |
1da177e4 LT |
604 | |
605 | if (list_empty(&acpi_bus_event_list)) { | |
606 | ||
607 | set_current_state(TASK_INTERRUPTIBLE); | |
608 | add_wait_queue(&acpi_bus_event_queue, &wait); | |
609 | ||
610 | if (list_empty(&acpi_bus_event_list)) | |
611 | schedule(); | |
612 | ||
613 | remove_wait_queue(&acpi_bus_event_queue, &wait); | |
614 | set_current_state(TASK_RUNNING); | |
615 | ||
616 | if (signal_pending(current)) | |
d550d98d | 617 | return -ERESTARTSYS; |
1da177e4 LT |
618 | } |
619 | ||
620 | spin_lock_irqsave(&acpi_bus_event_lock, flags); | |
f0a37e00 CE |
621 | if (!list_empty(&acpi_bus_event_list)) { |
622 | entry = list_entry(acpi_bus_event_list.next, | |
623 | struct acpi_bus_event, node); | |
1da177e4 | 624 | list_del(&entry->node); |
f0a37e00 | 625 | } |
1da177e4 LT |
626 | spin_unlock_irqrestore(&acpi_bus_event_lock, flags); |
627 | ||
628 | if (!entry) | |
d550d98d | 629 | return -ENODEV; |
1da177e4 LT |
630 | |
631 | memcpy(event, entry, sizeof(struct acpi_bus_event)); | |
632 | ||
633 | kfree(entry); | |
634 | ||
d550d98d | 635 | return 0; |
1da177e4 | 636 | } |
1da177e4 | 637 | |
14e04fb3 | 638 | #endif /* CONFIG_ACPI_PROC_EVENT */ |
1da177e4 LT |
639 | |
640 | /* -------------------------------------------------------------------------- | |
641 | Notification Handling | |
642 | -------------------------------------------------------------------------- */ | |
643 | ||
ff754e2e | 644 | static void acpi_bus_check_device(acpi_handle handle) |
1da177e4 | 645 | { |
ff754e2e | 646 | struct acpi_device *device; |
cdd5b8ca | 647 | acpi_status status; |
1da177e4 LT |
648 | struct acpi_device_status old_status; |
649 | ||
ff754e2e BH |
650 | if (acpi_bus_get_device(handle, &device)) |
651 | return; | |
1da177e4 | 652 | if (!device) |
cdd5b8ca | 653 | return; |
1da177e4 | 654 | |
1da177e4 LT |
655 | old_status = device->status; |
656 | ||
657 | /* | |
658 | * Make sure this device's parent is present before we go about | |
659 | * messing with the device. | |
660 | */ | |
661 | if (device->parent && !device->parent->status.present) { | |
662 | device->status = device->parent->status; | |
cdd5b8ca | 663 | return; |
1da177e4 LT |
664 | } |
665 | ||
666 | status = acpi_bus_get_status(device); | |
667 | if (ACPI_FAILURE(status)) | |
cdd5b8ca | 668 | return; |
1da177e4 LT |
669 | |
670 | if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status)) | |
cdd5b8ca | 671 | return; |
1da177e4 | 672 | |
1da177e4 LT |
673 | /* |
674 | * Device Insertion/Removal | |
675 | */ | |
676 | if ((device->status.present) && !(old_status.present)) { | |
677 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device insertion detected\n")); | |
678 | /* TBD: Handle device insertion */ | |
4be44fcd | 679 | } else if (!(device->status.present) && (old_status.present)) { |
1da177e4 LT |
680 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n")); |
681 | /* TBD: Handle device removal */ | |
682 | } | |
1da177e4 LT |
683 | } |
684 | ||
ff754e2e | 685 | static void acpi_bus_check_scope(acpi_handle handle) |
1da177e4 | 686 | { |
1da177e4 | 687 | /* Status Change? */ |
ff754e2e | 688 | acpi_bus_check_device(handle); |
1da177e4 | 689 | |
1da177e4 LT |
690 | /* |
691 | * TBD: Enumerate child devices within this device's scope and | |
692 | * run acpi_bus_check_device()'s on them. | |
693 | */ | |
1da177e4 LT |
694 | } |
695 | ||
6bd00a61 SL |
696 | static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list); |
697 | int register_acpi_bus_notifier(struct notifier_block *nb) | |
698 | { | |
699 | return blocking_notifier_chain_register(&acpi_bus_notify_list, nb); | |
700 | } | |
701 | EXPORT_SYMBOL_GPL(register_acpi_bus_notifier); | |
702 | ||
703 | void unregister_acpi_bus_notifier(struct notifier_block *nb) | |
704 | { | |
705 | blocking_notifier_chain_unregister(&acpi_bus_notify_list, nb); | |
706 | } | |
707 | EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier); | |
708 | ||
1da177e4 LT |
709 | /** |
710 | * acpi_bus_notify | |
711 | * --------------- | |
712 | * Callback for all 'system-level' device notifications (values 0x00-0x7F). | |
713 | */ | |
4be44fcd | 714 | static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) |
1da177e4 | 715 | { |
4be44fcd | 716 | struct acpi_device *device = NULL; |
6d278131 | 717 | struct acpi_driver *driver; |
1da177e4 | 718 | |
02c37bd8 BH |
719 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n", |
720 | type, handle)); | |
721 | ||
6bd00a61 SL |
722 | blocking_notifier_call_chain(&acpi_bus_notify_list, |
723 | type, (void *)handle); | |
1da177e4 | 724 | |
1da177e4 LT |
725 | switch (type) { |
726 | ||
727 | case ACPI_NOTIFY_BUS_CHECK: | |
ff754e2e | 728 | acpi_bus_check_scope(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_CHECK: | |
ff754e2e | 736 | acpi_bus_check_device(handle); |
aafbcd16 | 737 | /* |
1da177e4 | 738 | * TBD: We'll need to outsource certain events to non-ACPI |
4be44fcd | 739 | * drivers via the device manager (device.c). |
1da177e4 LT |
740 | */ |
741 | break; | |
742 | ||
743 | case ACPI_NOTIFY_DEVICE_WAKE: | |
1da177e4 LT |
744 | /* TBD */ |
745 | break; | |
746 | ||
747 | case ACPI_NOTIFY_EJECT_REQUEST: | |
1da177e4 LT |
748 | /* TBD */ |
749 | break; | |
750 | ||
751 | case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: | |
1da177e4 LT |
752 | /* TBD: Exactly what does 'light' mean? */ |
753 | break; | |
754 | ||
755 | case ACPI_NOTIFY_FREQUENCY_MISMATCH: | |
1da177e4 LT |
756 | /* TBD */ |
757 | break; | |
758 | ||
759 | case ACPI_NOTIFY_BUS_MODE_MISMATCH: | |
1da177e4 LT |
760 | /* TBD */ |
761 | break; | |
762 | ||
763 | case ACPI_NOTIFY_POWER_FAULT: | |
1da177e4 LT |
764 | /* TBD */ |
765 | break; | |
766 | ||
767 | default: | |
4be44fcd LB |
768 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
769 | "Received unknown/unsupported notification [%08x]\n", | |
770 | type)); | |
1da177e4 LT |
771 | break; |
772 | } | |
773 | ||
ff754e2e BH |
774 | acpi_bus_get_device(handle, &device); |
775 | if (device) { | |
776 | driver = device->driver; | |
777 | if (driver && driver->ops.notify && | |
778 | (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) | |
779 | driver->ops.notify(device, type); | |
780 | } | |
1da177e4 LT |
781 | } |
782 | ||
783 | /* -------------------------------------------------------------------------- | |
784 | Initialization/Cleanup | |
785 | -------------------------------------------------------------------------- */ | |
786 | ||
4be44fcd | 787 | static int __init acpi_bus_init_irq(void) |
1da177e4 | 788 | { |
4be44fcd LB |
789 | acpi_status status = AE_OK; |
790 | union acpi_object arg = { ACPI_TYPE_INTEGER }; | |
791 | struct acpi_object_list arg_list = { 1, &arg }; | |
792 | char *message = NULL; | |
1da177e4 | 793 | |
1da177e4 | 794 | |
aafbcd16 | 795 | /* |
1da177e4 LT |
796 | * Let the system know what interrupt model we are using by |
797 | * evaluating the \_PIC object, if exists. | |
798 | */ | |
799 | ||
800 | switch (acpi_irq_model) { | |
801 | case ACPI_IRQ_MODEL_PIC: | |
802 | message = "PIC"; | |
803 | break; | |
804 | case ACPI_IRQ_MODEL_IOAPIC: | |
805 | message = "IOAPIC"; | |
806 | break; | |
807 | case ACPI_IRQ_MODEL_IOSAPIC: | |
808 | message = "IOSAPIC"; | |
809 | break; | |
3948ec94 JK |
810 | case ACPI_IRQ_MODEL_PLATFORM: |
811 | message = "platform specific model"; | |
812 | break; | |
1da177e4 LT |
813 | default: |
814 | printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n"); | |
d550d98d | 815 | return -ENODEV; |
1da177e4 LT |
816 | } |
817 | ||
818 | printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message); | |
819 | ||
820 | arg.integer.value = acpi_irq_model; | |
821 | ||
822 | status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL); | |
823 | if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { | |
a6fc6720 | 824 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC")); |
d550d98d | 825 | return -ENODEV; |
1da177e4 LT |
826 | } |
827 | ||
d550d98d | 828 | return 0; |
1da177e4 LT |
829 | } |
830 | ||
67a119f9 | 831 | u8 acpi_gbl_permanent_mmap; |
ad71860a AS |
832 | |
833 | ||
4be44fcd | 834 | void __init acpi_early_init(void) |
1da177e4 | 835 | { |
4be44fcd | 836 | acpi_status status = AE_OK; |
1da177e4 LT |
837 | |
838 | if (acpi_disabled) | |
d550d98d | 839 | return; |
1da177e4 | 840 | |
61686124 BM |
841 | printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION); |
842 | ||
1da177e4 LT |
843 | /* enable workarounds, unless strict ACPI spec. compliance */ |
844 | if (!acpi_strict) | |
845 | acpi_gbl_enable_interpreter_slack = TRUE; | |
846 | ||
ad71860a AS |
847 | acpi_gbl_permanent_mmap = 1; |
848 | ||
aa2110cb LM |
849 | /* |
850 | * If the machine falls into the DMI check table, | |
851 | * DSDT will be copied to memory | |
852 | */ | |
853 | dmi_check_system(dsdt_dmi_table); | |
854 | ||
ad71860a AS |
855 | status = acpi_reallocate_root_table(); |
856 | if (ACPI_FAILURE(status)) { | |
857 | printk(KERN_ERR PREFIX | |
858 | "Unable to reallocate ACPI tables\n"); | |
859 | goto error0; | |
860 | } | |
861 | ||
1da177e4 LT |
862 | status = acpi_initialize_subsystem(); |
863 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
864 | printk(KERN_ERR PREFIX |
865 | "Unable to initialize the ACPI Interpreter\n"); | |
1da177e4 LT |
866 | goto error0; |
867 | } | |
868 | ||
869 | status = acpi_load_tables(); | |
870 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
871 | printk(KERN_ERR PREFIX |
872 | "Unable to load the System Description Tables\n"); | |
1da177e4 LT |
873 | goto error0; |
874 | } | |
875 | ||
1da177e4 LT |
876 | #ifdef CONFIG_X86 |
877 | if (!acpi_ioapic) { | |
1da177e4 | 878 | /* compatible (0) means level (3) */ |
5f3b1a8b AS |
879 | if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) { |
880 | acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK; | |
881 | acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL; | |
882 | } | |
1da177e4 | 883 | /* Set PIC-mode SCI trigger type */ |
cee324b1 | 884 | acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt, |
5f3b1a8b | 885 | (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2); |
1da177e4 | 886 | } else { |
1da177e4 | 887 | /* |
cee324b1 | 888 | * now that acpi_gbl_FADT is initialized, |
1da177e4 LT |
889 | * update it with result from INT_SRC_OVR parsing |
890 | */ | |
cee324b1 | 891 | acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi; |
1da177e4 LT |
892 | } |
893 | #endif | |
894 | ||
4be44fcd LB |
895 | status = |
896 | acpi_enable_subsystem(~ | |
897 | (ACPI_NO_HARDWARE_INIT | | |
898 | ACPI_NO_ACPI_ENABLE)); | |
1da177e4 LT |
899 | if (ACPI_FAILURE(status)) { |
900 | printk(KERN_ERR PREFIX "Unable to enable ACPI\n"); | |
901 | goto error0; | |
902 | } | |
903 | ||
d550d98d | 904 | return; |
1da177e4 | 905 | |
4be44fcd | 906 | error0: |
1da177e4 | 907 | disable_acpi(); |
d550d98d | 908 | return; |
1da177e4 LT |
909 | } |
910 | ||
4be44fcd | 911 | static int __init acpi_bus_init(void) |
1da177e4 | 912 | { |
4be44fcd LB |
913 | int result = 0; |
914 | acpi_status status = AE_OK; | |
915 | extern acpi_status acpi_os_initialize1(void); | |
1da177e4 | 916 | |
176f9c18 | 917 | acpi_os_initialize1(); |
1da177e4 | 918 | |
4be44fcd LB |
919 | status = |
920 | acpi_enable_subsystem(ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE); | |
1da177e4 | 921 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
922 | printk(KERN_ERR PREFIX |
923 | "Unable to start the ACPI Interpreter\n"); | |
1da177e4 LT |
924 | goto error1; |
925 | } | |
926 | ||
1da177e4 LT |
927 | /* |
928 | * ACPI 2.0 requires the EC driver to be loaded and work before | |
929 | * the EC device is found in the namespace (i.e. before acpi_initialize_objects() | |
930 | * is called). | |
931 | * | |
aafbcd16 | 932 | * This is accomplished by looking for the ECDT table, and getting |
1da177e4 LT |
933 | * the EC parameters out of that. |
934 | */ | |
935 | status = acpi_ec_ecdt_probe(); | |
936 | /* Ignore result. Not having an ECDT is not fatal. */ | |
1da177e4 | 937 | |
3563ff96 SL |
938 | acpi_bus_osc_support(); |
939 | ||
1da177e4 LT |
940 | status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION); |
941 | if (ACPI_FAILURE(status)) { | |
942 | printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n"); | |
943 | goto error1; | |
944 | } | |
945 | ||
78f16996 AC |
946 | acpi_early_processor_set_pdc(); |
947 | ||
455c8793 ZY |
948 | /* |
949 | * Maybe EC region is required at bus_scan/acpi_get_devices. So it | |
950 | * is necessary to enable it as early as possible. | |
951 | */ | |
952 | acpi_boot_ec_enable(); | |
953 | ||
1da177e4 LT |
954 | printk(KERN_INFO PREFIX "Interpreter enabled\n"); |
955 | ||
aafbcd16 AS |
956 | /* Initialize sleep structures */ |
957 | acpi_sleep_init(); | |
958 | ||
1da177e4 LT |
959 | /* |
960 | * Get the system interrupt model and evaluate \_PIC. | |
961 | */ | |
962 | result = acpi_bus_init_irq(); | |
963 | if (result) | |
964 | goto error1; | |
965 | ||
966 | /* | |
967 | * Register the for all standard device notifications. | |
968 | */ | |
4be44fcd LB |
969 | status = |
970 | acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, | |
971 | &acpi_bus_notify, NULL); | |
1da177e4 | 972 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
973 | printk(KERN_ERR PREFIX |
974 | "Unable to register for device notifications\n"); | |
1da177e4 LT |
975 | goto error1; |
976 | } | |
977 | ||
978 | /* | |
979 | * Create the top ACPI proc directory | |
980 | */ | |
981 | acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL); | |
982 | ||
d550d98d | 983 | return 0; |
1da177e4 LT |
984 | |
985 | /* Mimic structured exception handling */ | |
4be44fcd | 986 | error1: |
1da177e4 | 987 | acpi_terminate(); |
d550d98d | 988 | return -ENODEV; |
1da177e4 LT |
989 | } |
990 | ||
99e0d2fc | 991 | struct kobject *acpi_kobj; |
1da177e4 | 992 | |
4be44fcd | 993 | static int __init acpi_init(void) |
1da177e4 | 994 | { |
4be44fcd | 995 | int result = 0; |
1da177e4 | 996 | |
1da177e4 | 997 | |
1da177e4 LT |
998 | if (acpi_disabled) { |
999 | printk(KERN_INFO PREFIX "Interpreter disabled.\n"); | |
d550d98d | 1000 | return -ENODEV; |
1da177e4 LT |
1001 | } |
1002 | ||
f62ed9e3 | 1003 | acpi_kobj = kobject_create_and_add("acpi", firmware_kobj); |
99e0d2fc | 1004 | if (!acpi_kobj) { |
96b2dd1f | 1005 | printk(KERN_WARNING "%s: kset create error\n", __func__); |
99e0d2fc GKH |
1006 | acpi_kobj = NULL; |
1007 | } | |
1da177e4 | 1008 | |
0e46517d | 1009 | init_acpi_device_notify(); |
1da177e4 LT |
1010 | result = acpi_bus_init(); |
1011 | ||
1012 | if (!result) { | |
7752d5cf | 1013 | pci_mmcfg_late_init(); |
9f9adecd LB |
1014 | if (!(pm_flags & PM_APM)) |
1015 | pm_flags |= PM_ACPI; | |
1da177e4 | 1016 | else { |
4be44fcd LB |
1017 | printk(KERN_INFO PREFIX |
1018 | "APM is already active, exiting\n"); | |
1da177e4 LT |
1019 | disable_acpi(); |
1020 | result = -ENODEV; | |
1021 | } | |
1da177e4 LT |
1022 | } else |
1023 | disable_acpi(); | |
81d0273d BH |
1024 | |
1025 | if (acpi_disabled) | |
1026 | return result; | |
1027 | ||
6415e12b ZY |
1028 | /* |
1029 | * If the laptop falls into the DMI check table, the power state check | |
1030 | * will be disabled in the course of device power transistion. | |
1031 | */ | |
1032 | dmi_check_system(power_nocheck_dmi_table); | |
e747f274 BH |
1033 | |
1034 | acpi_scan_init(); | |
a5f820fe | 1035 | acpi_ec_init(); |
44515374 | 1036 | acpi_power_init(); |
1c8fce27 | 1037 | acpi_sysfs_init(); |
a25ee920 | 1038 | acpi_debugfs_init(); |
9cee43e0 | 1039 | acpi_sleep_proc_init(); |
201b8c65 | 1040 | acpi_wakeup_device_init(); |
d550d98d | 1041 | return result; |
1da177e4 LT |
1042 | } |
1043 | ||
1044 | subsys_initcall(acpi_init); |