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> |
49a12877 | 36 | #include <linux/regulator/machine.h> |
1da177e4 LT |
37 | #ifdef CONFIG_X86 |
38 | #include <asm/mpspec.h> | |
39 | #endif | |
7752d5cf | 40 | #include <linux/pci.h> |
eccddd32 | 41 | #include <acpi/apei.h> |
eb27cae8 | 42 | #include <linux/dmi.h> |
cd51e61c | 43 | #include <linux/suspend.h> |
1da177e4 | 44 | |
e60cc7a6 BH |
45 | #include "internal.h" |
46 | ||
1da177e4 | 47 | #define _COMPONENT ACPI_BUS_COMPONENT |
f52fd66d | 48 | ACPI_MODULE_NAME("bus"); |
1da177e4 | 49 | |
4be44fcd LB |
50 | struct acpi_device *acpi_root; |
51 | struct proc_dir_entry *acpi_root_dir; | |
1da177e4 LT |
52 | EXPORT_SYMBOL(acpi_root_dir); |
53 | ||
cce4f632 | 54 | #ifdef CONFIG_X86 |
73577d1d LZ |
55 | #ifdef CONFIG_ACPI_CUSTOM_DSDT |
56 | static inline int set_copy_dsdt(const struct dmi_system_id *id) | |
57 | { | |
58 | return 0; | |
59 | } | |
60 | #else | |
aa2110cb LM |
61 | static int set_copy_dsdt(const struct dmi_system_id *id) |
62 | { | |
63 | printk(KERN_NOTICE "%s detected - " | |
64 | "force copy of DSDT to local memory\n", id->ident); | |
65 | acpi_gbl_copy_dsdt_locally = 1; | |
66 | return 0; | |
67 | } | |
73577d1d | 68 | #endif |
aa2110cb LM |
69 | |
70 | static struct dmi_system_id dsdt_dmi_table[] __initdata = { | |
71 | /* | |
100cf877 | 72 | * Invoke DSDT corruption work-around on all Toshiba Satellite. |
aa2110cb LM |
73 | * https://bugzilla.kernel.org/show_bug.cgi?id=14679 |
74 | */ | |
75 | { | |
76 | .callback = set_copy_dsdt, | |
100cf877 | 77 | .ident = "TOSHIBA Satellite", |
aa2110cb LM |
78 | .matches = { |
79 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
100cf877 | 80 | DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), |
aa2110cb | 81 | }, |
cce4f632 LM |
82 | }, |
83 | {} | |
aa2110cb | 84 | }; |
cce4f632 LM |
85 | #else |
86 | static struct dmi_system_id dsdt_dmi_table[] __initdata = { | |
87 | {} | |
88 | }; | |
89 | #endif | |
aa2110cb | 90 | |
1da177e4 LT |
91 | /* -------------------------------------------------------------------------- |
92 | Device Management | |
93 | -------------------------------------------------------------------------- */ | |
94 | ||
402ac536 BH |
95 | acpi_status acpi_bus_get_status_handle(acpi_handle handle, |
96 | unsigned long long *sta) | |
1da177e4 | 97 | { |
402ac536 | 98 | acpi_status status; |
4be44fcd | 99 | |
402ac536 BH |
100 | status = acpi_evaluate_integer(handle, "_STA", NULL, sta); |
101 | if (ACPI_SUCCESS(status)) | |
102 | return AE_OK; | |
1da177e4 | 103 | |
402ac536 BH |
104 | if (status == AE_NOT_FOUND) { |
105 | *sta = ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | | |
106 | ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING; | |
107 | return AE_OK; | |
1da177e4 | 108 | } |
402ac536 BH |
109 | return status; |
110 | } | |
1da177e4 | 111 | |
402ac536 BH |
112 | int acpi_bus_get_status(struct acpi_device *device) |
113 | { | |
114 | acpi_status status; | |
115 | unsigned long long sta; | |
116 | ||
117 | status = acpi_bus_get_status_handle(device->handle, &sta); | |
118 | if (ACPI_FAILURE(status)) | |
119 | return -ENODEV; | |
120 | ||
25db115b | 121 | acpi_set_device_status(device, sta); |
1da177e4 LT |
122 | |
123 | if (device->status.functional && !device->status.present) { | |
39a0ad87 ZY |
124 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: " |
125 | "functional but not present;\n", | |
25db115b | 126 | device->pnp.bus_id, (u32)sta)); |
1da177e4 LT |
127 | } |
128 | ||
4be44fcd | 129 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n", |
25db115b | 130 | device->pnp.bus_id, (u32)sta)); |
d550d98d | 131 | return 0; |
1da177e4 | 132 | } |
4be44fcd | 133 | EXPORT_SYMBOL(acpi_bus_get_status); |
1da177e4 | 134 | |
20733939 | 135 | void acpi_bus_private_data_handler(acpi_handle handle, |
8e4319c4 | 136 | void *context) |
20733939 ZR |
137 | { |
138 | return; | |
139 | } | |
140 | EXPORT_SYMBOL(acpi_bus_private_data_handler); | |
141 | ||
72013795 LT |
142 | int acpi_bus_attach_private_data(acpi_handle handle, void *data) |
143 | { | |
144 | acpi_status status; | |
145 | ||
146 | status = acpi_attach_data(handle, | |
147 | acpi_bus_private_data_handler, data); | |
148 | if (ACPI_FAILURE(status)) { | |
149 | acpi_handle_debug(handle, "Error attaching device data\n"); | |
150 | return -ENODEV; | |
151 | } | |
152 | ||
153 | return 0; | |
154 | } | |
155 | EXPORT_SYMBOL_GPL(acpi_bus_attach_private_data); | |
156 | ||
20733939 ZR |
157 | int acpi_bus_get_private_data(acpi_handle handle, void **data) |
158 | { | |
6a8c0af6 | 159 | acpi_status status; |
20733939 ZR |
160 | |
161 | if (!*data) | |
162 | return -EINVAL; | |
163 | ||
164 | status = acpi_get_data(handle, acpi_bus_private_data_handler, data); | |
72013795 LT |
165 | if (ACPI_FAILURE(status)) { |
166 | acpi_handle_debug(handle, "No context for object\n"); | |
20733939 ZR |
167 | return -ENODEV; |
168 | } | |
169 | ||
170 | return 0; | |
171 | } | |
72013795 LT |
172 | EXPORT_SYMBOL_GPL(acpi_bus_get_private_data); |
173 | ||
174 | void acpi_bus_detach_private_data(acpi_handle handle) | |
175 | { | |
176 | acpi_detach_data(handle, acpi_bus_private_data_handler); | |
177 | } | |
178 | EXPORT_SYMBOL_GPL(acpi_bus_detach_private_data); | |
20733939 | 179 | |
70023de8 SL |
180 | static void acpi_print_osc_error(acpi_handle handle, |
181 | struct acpi_osc_context *context, char *error) | |
182 | { | |
183 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER}; | |
184 | int i; | |
185 | ||
186 | if (ACPI_FAILURE(acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer))) | |
187 | printk(KERN_DEBUG "%s\n", error); | |
188 | else { | |
189 | printk(KERN_DEBUG "%s:%s\n", (char *)buffer.pointer, error); | |
190 | kfree(buffer.pointer); | |
191 | } | |
192 | printk(KERN_DEBUG"_OSC request data:"); | |
193 | for (i = 0; i < context->cap.length; i += sizeof(u32)) | |
194 | printk("%x ", *((u32 *)(context->cap.pointer + i))); | |
195 | printk("\n"); | |
196 | } | |
197 | ||
4b3db708 | 198 | acpi_status acpi_str_to_uuid(char *str, u8 *uuid) |
70023de8 SL |
199 | { |
200 | int i; | |
201 | static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21, | |
202 | 24, 26, 28, 30, 32, 34}; | |
203 | ||
204 | if (strlen(str) != 36) | |
205 | return AE_BAD_PARAMETER; | |
206 | for (i = 0; i < 36; i++) { | |
207 | if (i == 8 || i == 13 || i == 18 || i == 23) { | |
208 | if (str[i] != '-') | |
209 | return AE_BAD_PARAMETER; | |
210 | } else if (!isxdigit(str[i])) | |
211 | return AE_BAD_PARAMETER; | |
212 | } | |
213 | for (i = 0; i < 16; i++) { | |
965fd9e9 AS |
214 | uuid[i] = hex_to_bin(str[opc_map_to_uuid[i]]) << 4; |
215 | uuid[i] |= hex_to_bin(str[opc_map_to_uuid[i] + 1]); | |
70023de8 SL |
216 | } |
217 | return AE_OK; | |
218 | } | |
4b3db708 | 219 | EXPORT_SYMBOL_GPL(acpi_str_to_uuid); |
70023de8 SL |
220 | |
221 | acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) | |
222 | { | |
223 | acpi_status status; | |
224 | struct acpi_object_list input; | |
225 | union acpi_object in_params[4]; | |
226 | union acpi_object *out_obj; | |
227 | u8 uuid[16]; | |
228 | u32 errors; | |
9dc130fc | 229 | struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; |
70023de8 SL |
230 | |
231 | if (!context) | |
232 | return AE_ERROR; | |
233 | if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid))) | |
234 | return AE_ERROR; | |
235 | context->ret.length = ACPI_ALLOCATE_BUFFER; | |
236 | context->ret.pointer = NULL; | |
237 | ||
238 | /* Setting up input parameters */ | |
239 | input.count = 4; | |
240 | input.pointer = in_params; | |
241 | in_params[0].type = ACPI_TYPE_BUFFER; | |
242 | in_params[0].buffer.length = 16; | |
243 | in_params[0].buffer.pointer = uuid; | |
244 | in_params[1].type = ACPI_TYPE_INTEGER; | |
245 | in_params[1].integer.value = context->rev; | |
246 | in_params[2].type = ACPI_TYPE_INTEGER; | |
247 | in_params[2].integer.value = context->cap.length/sizeof(u32); | |
248 | in_params[3].type = ACPI_TYPE_BUFFER; | |
249 | in_params[3].buffer.length = context->cap.length; | |
250 | in_params[3].buffer.pointer = context->cap.pointer; | |
251 | ||
9dc130fc | 252 | status = acpi_evaluate_object(handle, "_OSC", &input, &output); |
70023de8 SL |
253 | if (ACPI_FAILURE(status)) |
254 | return status; | |
255 | ||
9dc130fc | 256 | if (!output.length) |
70023de8 SL |
257 | return AE_NULL_OBJECT; |
258 | ||
9dc130fc SL |
259 | out_obj = output.pointer; |
260 | if (out_obj->type != ACPI_TYPE_BUFFER | |
261 | || out_obj->buffer.length != context->cap.length) { | |
70023de8 SL |
262 | acpi_print_osc_error(handle, context, |
263 | "_OSC evaluation returned wrong type"); | |
264 | status = AE_TYPE; | |
265 | goto out_kfree; | |
266 | } | |
267 | /* Need to ignore the bit0 in result code */ | |
268 | errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0); | |
269 | if (errors) { | |
270 | if (errors & OSC_REQUEST_ERROR) | |
271 | acpi_print_osc_error(handle, context, | |
272 | "_OSC request failed"); | |
273 | if (errors & OSC_INVALID_UUID_ERROR) | |
274 | acpi_print_osc_error(handle, context, | |
275 | "_OSC invalid UUID"); | |
276 | if (errors & OSC_INVALID_REVISION_ERROR) | |
277 | acpi_print_osc_error(handle, context, | |
278 | "_OSC invalid revision"); | |
279 | if (errors & OSC_CAPABILITIES_MASK_ERROR) { | |
b938a229 | 280 | if (((u32 *)context->cap.pointer)[OSC_QUERY_DWORD] |
70023de8 SL |
281 | & OSC_QUERY_ENABLE) |
282 | goto out_success; | |
283 | status = AE_SUPPORT; | |
284 | goto out_kfree; | |
285 | } | |
286 | status = AE_ERROR; | |
287 | goto out_kfree; | |
288 | } | |
289 | out_success: | |
9dc130fc | 290 | context->ret.length = out_obj->buffer.length; |
e2cb5f08 AE |
291 | context->ret.pointer = kmemdup(out_obj->buffer.pointer, |
292 | context->ret.length, GFP_KERNEL); | |
9dc130fc SL |
293 | if (!context->ret.pointer) { |
294 | status = AE_NO_MEMORY; | |
295 | goto out_kfree; | |
296 | } | |
9dc130fc | 297 | status = AE_OK; |
70023de8 SL |
298 | |
299 | out_kfree: | |
9dc130fc SL |
300 | kfree(output.pointer); |
301 | if (status != AE_OK) | |
302 | context->ret.pointer = NULL; | |
70023de8 SL |
303 | return status; |
304 | } | |
305 | EXPORT_SYMBOL(acpi_run_osc); | |
306 | ||
eccddd32 | 307 | bool osc_sb_apei_support_acked; |
3563ff96 SL |
308 | static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48"; |
309 | static void acpi_bus_osc_support(void) | |
310 | { | |
311 | u32 capbuf[2]; | |
312 | struct acpi_osc_context context = { | |
313 | .uuid_str = sb_uuid_str, | |
314 | .rev = 1, | |
315 | .cap.length = 8, | |
316 | .cap.pointer = capbuf, | |
317 | }; | |
318 | acpi_handle handle; | |
319 | ||
b938a229 BH |
320 | capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE; |
321 | capbuf[OSC_SUPPORT_DWORD] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */ | |
6a4e2b75 ZY |
322 | #if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\ |
323 | defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE) | |
b938a229 | 324 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT; |
3563ff96 | 325 | #endif |
6a4e2b75 ZY |
326 | |
327 | #if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE) | |
b938a229 | 328 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT; |
6a4e2b75 | 329 | #endif |
eccddd32 | 330 | |
b938a229 | 331 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; |
c2f4191a | 332 | |
eccddd32 | 333 | if (!ghes_disable) |
b938a229 | 334 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; |
3563ff96 SL |
335 | if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) |
336 | return; | |
eccddd32 HY |
337 | if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) { |
338 | u32 *capbuf_ret = context.ret.pointer; | |
b938a229 | 339 | if (context.ret.length > OSC_SUPPORT_DWORD) |
eccddd32 | 340 | osc_sb_apei_support_acked = |
b938a229 | 341 | capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT; |
3563ff96 | 342 | kfree(context.ret.pointer); |
eccddd32 HY |
343 | } |
344 | /* do we need to check other returned cap? Sounds no */ | |
3563ff96 SL |
345 | } |
346 | ||
1da177e4 LT |
347 | /* -------------------------------------------------------------------------- |
348 | Notification Handling | |
349 | -------------------------------------------------------------------------- */ | |
350 | ||
1da177e4 LT |
351 | /** |
352 | * acpi_bus_notify | |
353 | * --------------- | |
354 | * Callback for all 'system-level' device notifications (values 0x00-0x7F). | |
355 | */ | |
4be44fcd | 356 | static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) |
1da177e4 | 357 | { |
1a699476 | 358 | struct acpi_device *adev; |
6d278131 | 359 | struct acpi_driver *driver; |
1a699476 | 360 | u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; |
d0103387 | 361 | bool hotplug_event = false; |
02c37bd8 | 362 | |
1da177e4 | 363 | switch (type) { |
1da177e4 | 364 | case ACPI_NOTIFY_BUS_CHECK: |
1a699476 | 365 | acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n"); |
d0103387 | 366 | hotplug_event = true; |
1da177e4 LT |
367 | break; |
368 | ||
369 | case ACPI_NOTIFY_DEVICE_CHECK: | |
1a699476 | 370 | acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n"); |
d0103387 | 371 | hotplug_event = true; |
1da177e4 LT |
372 | break; |
373 | ||
374 | case ACPI_NOTIFY_DEVICE_WAKE: | |
1a699476 | 375 | acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_WAKE event\n"); |
1da177e4 LT |
376 | break; |
377 | ||
378 | case ACPI_NOTIFY_EJECT_REQUEST: | |
1a699476 | 379 | acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n"); |
d0103387 | 380 | hotplug_event = true; |
1da177e4 LT |
381 | break; |
382 | ||
383 | case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: | |
1a699476 | 384 | acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK_LIGHT event\n"); |
1da177e4 LT |
385 | /* TBD: Exactly what does 'light' mean? */ |
386 | break; | |
387 | ||
388 | case ACPI_NOTIFY_FREQUENCY_MISMATCH: | |
1a699476 RW |
389 | acpi_handle_err(handle, "Device cannot be configured due " |
390 | "to a frequency mismatch\n"); | |
1da177e4 LT |
391 | break; |
392 | ||
393 | case ACPI_NOTIFY_BUS_MODE_MISMATCH: | |
1a699476 RW |
394 | acpi_handle_err(handle, "Device cannot be configured due " |
395 | "to a bus mode mismatch\n"); | |
1da177e4 LT |
396 | break; |
397 | ||
398 | case ACPI_NOTIFY_POWER_FAULT: | |
1a699476 | 399 | acpi_handle_err(handle, "Device has suffered a power fault\n"); |
1da177e4 LT |
400 | break; |
401 | ||
402 | default: | |
f66abe92 RW |
403 | acpi_handle_debug(handle, "Unknown event type 0x%x\n", type); |
404 | break; | |
1da177e4 LT |
405 | } |
406 | ||
1a699476 RW |
407 | adev = acpi_bus_get_acpi_device(handle); |
408 | if (!adev) | |
409 | goto err; | |
78ea4639 | 410 | |
1a699476 RW |
411 | driver = adev->driver; |
412 | if (driver && driver->ops.notify && | |
413 | (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) | |
414 | driver->ops.notify(adev, type); | |
415 | ||
d0103387 RW |
416 | if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type))) |
417 | return; | |
418 | ||
1a699476 RW |
419 | acpi_bus_put_acpi_device(adev); |
420 | return; | |
421 | ||
422 | err: | |
700b8422 | 423 | acpi_evaluate_ost(handle, type, ost_code, NULL); |
1da177e4 LT |
424 | } |
425 | ||
426 | /* -------------------------------------------------------------------------- | |
427 | Initialization/Cleanup | |
428 | -------------------------------------------------------------------------- */ | |
429 | ||
4be44fcd | 430 | static int __init acpi_bus_init_irq(void) |
1da177e4 | 431 | { |
6a8c0af6 | 432 | acpi_status status; |
4be44fcd | 433 | char *message = NULL; |
1da177e4 | 434 | |
1da177e4 | 435 | |
aafbcd16 | 436 | /* |
1da177e4 LT |
437 | * Let the system know what interrupt model we are using by |
438 | * evaluating the \_PIC object, if exists. | |
439 | */ | |
440 | ||
441 | switch (acpi_irq_model) { | |
442 | case ACPI_IRQ_MODEL_PIC: | |
443 | message = "PIC"; | |
444 | break; | |
445 | case ACPI_IRQ_MODEL_IOAPIC: | |
446 | message = "IOAPIC"; | |
447 | break; | |
448 | case ACPI_IRQ_MODEL_IOSAPIC: | |
449 | message = "IOSAPIC"; | |
450 | break; | |
fbe61ec7 HG |
451 | case ACPI_IRQ_MODEL_GIC: |
452 | message = "GIC"; | |
453 | break; | |
3948ec94 JK |
454 | case ACPI_IRQ_MODEL_PLATFORM: |
455 | message = "platform specific model"; | |
456 | break; | |
1da177e4 LT |
457 | default: |
458 | printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n"); | |
d550d98d | 459 | return -ENODEV; |
1da177e4 LT |
460 | } |
461 | ||
462 | printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message); | |
463 | ||
0db98202 | 464 | status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model); |
1da177e4 | 465 | if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { |
a6fc6720 | 466 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC")); |
d550d98d | 467 | return -ENODEV; |
1da177e4 LT |
468 | } |
469 | ||
d550d98d | 470 | return 0; |
1da177e4 LT |
471 | } |
472 | ||
4be44fcd | 473 | void __init acpi_early_init(void) |
1da177e4 | 474 | { |
6a8c0af6 | 475 | acpi_status status; |
1da177e4 LT |
476 | |
477 | if (acpi_disabled) | |
d550d98d | 478 | return; |
1da177e4 | 479 | |
61686124 BM |
480 | printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION); |
481 | ||
4fc0a7e8 LZ |
482 | /* It's safe to verify table checksums during late stage */ |
483 | acpi_gbl_verify_table_checksum = TRUE; | |
484 | ||
1da177e4 LT |
485 | /* enable workarounds, unless strict ACPI spec. compliance */ |
486 | if (!acpi_strict) | |
487 | acpi_gbl_enable_interpreter_slack = TRUE; | |
488 | ||
ad71860a AS |
489 | acpi_gbl_permanent_mmap = 1; |
490 | ||
aa2110cb LM |
491 | /* |
492 | * If the machine falls into the DMI check table, | |
493 | * DSDT will be copied to memory | |
494 | */ | |
495 | dmi_check_system(dsdt_dmi_table); | |
496 | ||
ad71860a AS |
497 | status = acpi_reallocate_root_table(); |
498 | if (ACPI_FAILURE(status)) { | |
499 | printk(KERN_ERR PREFIX | |
500 | "Unable to reallocate ACPI tables\n"); | |
501 | goto error0; | |
502 | } | |
503 | ||
1da177e4 LT |
504 | status = acpi_initialize_subsystem(); |
505 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
506 | printk(KERN_ERR PREFIX |
507 | "Unable to initialize the ACPI Interpreter\n"); | |
1da177e4 LT |
508 | goto error0; |
509 | } | |
510 | ||
511 | status = acpi_load_tables(); | |
512 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
513 | printk(KERN_ERR PREFIX |
514 | "Unable to load the System Description Tables\n"); | |
1da177e4 LT |
515 | goto error0; |
516 | } | |
517 | ||
1da177e4 LT |
518 | #ifdef CONFIG_X86 |
519 | if (!acpi_ioapic) { | |
1da177e4 | 520 | /* compatible (0) means level (3) */ |
5f3b1a8b AS |
521 | if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) { |
522 | acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK; | |
523 | acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL; | |
524 | } | |
1da177e4 | 525 | /* Set PIC-mode SCI trigger type */ |
cee324b1 | 526 | acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt, |
5f3b1a8b | 527 | (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2); |
1da177e4 | 528 | } else { |
1da177e4 | 529 | /* |
cee324b1 | 530 | * now that acpi_gbl_FADT is initialized, |
1da177e4 LT |
531 | * update it with result from INT_SRC_OVR parsing |
532 | */ | |
cee324b1 | 533 | acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi; |
1da177e4 LT |
534 | } |
535 | #endif | |
536 | ||
4505a201 | 537 | status = acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE); |
1da177e4 LT |
538 | if (ACPI_FAILURE(status)) { |
539 | printk(KERN_ERR PREFIX "Unable to enable ACPI\n"); | |
540 | goto error0; | |
541 | } | |
542 | ||
49a12877 MB |
543 | /* |
544 | * If the system is using ACPI then we can be reasonably | |
545 | * confident that any regulators are managed by the firmware | |
546 | * so tell the regulator core it has everything it needs to | |
547 | * know. | |
548 | */ | |
549 | regulator_has_full_constraints(); | |
550 | ||
d550d98d | 551 | return; |
1da177e4 | 552 | |
4be44fcd | 553 | error0: |
1da177e4 | 554 | disable_acpi(); |
d550d98d | 555 | return; |
1da177e4 LT |
556 | } |
557 | ||
4be44fcd | 558 | static int __init acpi_bus_init(void) |
1da177e4 | 559 | { |
6a8c0af6 BH |
560 | int result; |
561 | acpi_status status; | |
1da177e4 | 562 | |
176f9c18 | 563 | acpi_os_initialize1(); |
1da177e4 | 564 | |
4505a201 | 565 | status = acpi_enable_subsystem(ACPI_NO_ACPI_ENABLE); |
1da177e4 | 566 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
567 | printk(KERN_ERR PREFIX |
568 | "Unable to start the ACPI Interpreter\n"); | |
1da177e4 LT |
569 | goto error1; |
570 | } | |
571 | ||
1da177e4 LT |
572 | /* |
573 | * ACPI 2.0 requires the EC driver to be loaded and work before | |
574 | * the EC device is found in the namespace (i.e. before acpi_initialize_objects() | |
575 | * is called). | |
576 | * | |
aafbcd16 | 577 | * This is accomplished by looking for the ECDT table, and getting |
1da177e4 LT |
578 | * the EC parameters out of that. |
579 | */ | |
580 | status = acpi_ec_ecdt_probe(); | |
581 | /* Ignore result. Not having an ECDT is not fatal. */ | |
1da177e4 LT |
582 | |
583 | status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION); | |
584 | if (ACPI_FAILURE(status)) { | |
585 | printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n"); | |
586 | goto error1; | |
587 | } | |
588 | ||
fc54ab72 LM |
589 | /* |
590 | * _OSC method may exist in module level code, | |
591 | * so it must be run after ACPI_FULL_INITIALIZATION | |
592 | */ | |
593 | acpi_bus_osc_support(); | |
594 | ||
b1d248d9 ZR |
595 | /* |
596 | * _PDC control method may load dynamic SSDT tables, | |
597 | * and we need to install the table handler before that. | |
598 | */ | |
599 | acpi_sysfs_init(); | |
600 | ||
78f16996 AC |
601 | acpi_early_processor_set_pdc(); |
602 | ||
455c8793 ZY |
603 | /* |
604 | * Maybe EC region is required at bus_scan/acpi_get_devices. So it | |
605 | * is necessary to enable it as early as possible. | |
606 | */ | |
607 | acpi_boot_ec_enable(); | |
608 | ||
1da177e4 LT |
609 | printk(KERN_INFO PREFIX "Interpreter enabled\n"); |
610 | ||
aafbcd16 AS |
611 | /* Initialize sleep structures */ |
612 | acpi_sleep_init(); | |
613 | ||
1da177e4 LT |
614 | /* |
615 | * Get the system interrupt model and evaluate \_PIC. | |
616 | */ | |
617 | result = acpi_bus_init_irq(); | |
618 | if (result) | |
619 | goto error1; | |
620 | ||
621 | /* | |
622 | * Register the for all standard device notifications. | |
623 | */ | |
4be44fcd LB |
624 | status = |
625 | acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, | |
626 | &acpi_bus_notify, NULL); | |
1da177e4 | 627 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
628 | printk(KERN_ERR PREFIX |
629 | "Unable to register for device notifications\n"); | |
1da177e4 LT |
630 | goto error1; |
631 | } | |
632 | ||
633 | /* | |
634 | * Create the top ACPI proc directory | |
635 | */ | |
636 | acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL); | |
637 | ||
d550d98d | 638 | return 0; |
1da177e4 LT |
639 | |
640 | /* Mimic structured exception handling */ | |
4be44fcd | 641 | error1: |
1da177e4 | 642 | acpi_terminate(); |
d550d98d | 643 | return -ENODEV; |
1da177e4 LT |
644 | } |
645 | ||
99e0d2fc | 646 | struct kobject *acpi_kobj; |
f2d4753f | 647 | EXPORT_SYMBOL_GPL(acpi_kobj); |
1da177e4 | 648 | |
4be44fcd | 649 | static int __init acpi_init(void) |
1da177e4 | 650 | { |
6831c6ed | 651 | int result; |
1da177e4 | 652 | |
1da177e4 LT |
653 | if (acpi_disabled) { |
654 | printk(KERN_INFO PREFIX "Interpreter disabled.\n"); | |
d550d98d | 655 | return -ENODEV; |
1da177e4 LT |
656 | } |
657 | ||
f62ed9e3 | 658 | acpi_kobj = kobject_create_and_add("acpi", firmware_kobj); |
99e0d2fc | 659 | if (!acpi_kobj) { |
96b2dd1f | 660 | printk(KERN_WARNING "%s: kset create error\n", __func__); |
99e0d2fc GKH |
661 | acpi_kobj = NULL; |
662 | } | |
1da177e4 | 663 | |
0e46517d | 664 | init_acpi_device_notify(); |
1da177e4 | 665 | result = acpi_bus_init(); |
6831c6ed | 666 | if (result) { |
1da177e4 | 667 | disable_acpi(); |
81d0273d | 668 | return result; |
6831c6ed | 669 | } |
81d0273d | 670 | |
6831c6ed | 671 | pci_mmcfg_late_init(); |
e747f274 | 672 | acpi_scan_init(); |
a5f820fe | 673 | acpi_ec_init(); |
a25ee920 | 674 | acpi_debugfs_init(); |
9cee43e0 | 675 | acpi_sleep_proc_init(); |
201b8c65 | 676 | acpi_wakeup_device_init(); |
6831c6ed | 677 | return 0; |
1da177e4 LT |
678 | } |
679 | ||
680 | subsys_initcall(acpi_init); |