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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> |
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 | |
f244d8b6 RW |
180 | void acpi_bus_no_hotplug(acpi_handle handle) |
181 | { | |
182 | struct acpi_device *adev = NULL; | |
183 | ||
184 | acpi_bus_get_device(handle, &adev); | |
185 | if (adev) | |
186 | adev->flags.no_hotplug = true; | |
187 | } | |
188 | EXPORT_SYMBOL_GPL(acpi_bus_no_hotplug); | |
189 | ||
70023de8 SL |
190 | static void acpi_print_osc_error(acpi_handle handle, |
191 | struct acpi_osc_context *context, char *error) | |
192 | { | |
193 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER}; | |
194 | int i; | |
195 | ||
196 | if (ACPI_FAILURE(acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer))) | |
197 | printk(KERN_DEBUG "%s\n", error); | |
198 | else { | |
199 | printk(KERN_DEBUG "%s:%s\n", (char *)buffer.pointer, error); | |
200 | kfree(buffer.pointer); | |
201 | } | |
202 | printk(KERN_DEBUG"_OSC request data:"); | |
203 | for (i = 0; i < context->cap.length; i += sizeof(u32)) | |
204 | printk("%x ", *((u32 *)(context->cap.pointer + i))); | |
205 | printk("\n"); | |
206 | } | |
207 | ||
4b3db708 | 208 | acpi_status acpi_str_to_uuid(char *str, u8 *uuid) |
70023de8 SL |
209 | { |
210 | int i; | |
211 | static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21, | |
212 | 24, 26, 28, 30, 32, 34}; | |
213 | ||
214 | if (strlen(str) != 36) | |
215 | return AE_BAD_PARAMETER; | |
216 | for (i = 0; i < 36; i++) { | |
217 | if (i == 8 || i == 13 || i == 18 || i == 23) { | |
218 | if (str[i] != '-') | |
219 | return AE_BAD_PARAMETER; | |
220 | } else if (!isxdigit(str[i])) | |
221 | return AE_BAD_PARAMETER; | |
222 | } | |
223 | for (i = 0; i < 16; i++) { | |
965fd9e9 AS |
224 | uuid[i] = hex_to_bin(str[opc_map_to_uuid[i]]) << 4; |
225 | uuid[i] |= hex_to_bin(str[opc_map_to_uuid[i] + 1]); | |
70023de8 SL |
226 | } |
227 | return AE_OK; | |
228 | } | |
4b3db708 | 229 | EXPORT_SYMBOL_GPL(acpi_str_to_uuid); |
70023de8 SL |
230 | |
231 | acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) | |
232 | { | |
233 | acpi_status status; | |
234 | struct acpi_object_list input; | |
235 | union acpi_object in_params[4]; | |
236 | union acpi_object *out_obj; | |
237 | u8 uuid[16]; | |
238 | u32 errors; | |
9dc130fc | 239 | struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; |
70023de8 SL |
240 | |
241 | if (!context) | |
242 | return AE_ERROR; | |
243 | if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid))) | |
244 | return AE_ERROR; | |
245 | context->ret.length = ACPI_ALLOCATE_BUFFER; | |
246 | context->ret.pointer = NULL; | |
247 | ||
248 | /* Setting up input parameters */ | |
249 | input.count = 4; | |
250 | input.pointer = in_params; | |
251 | in_params[0].type = ACPI_TYPE_BUFFER; | |
252 | in_params[0].buffer.length = 16; | |
253 | in_params[0].buffer.pointer = uuid; | |
254 | in_params[1].type = ACPI_TYPE_INTEGER; | |
255 | in_params[1].integer.value = context->rev; | |
256 | in_params[2].type = ACPI_TYPE_INTEGER; | |
257 | in_params[2].integer.value = context->cap.length/sizeof(u32); | |
258 | in_params[3].type = ACPI_TYPE_BUFFER; | |
259 | in_params[3].buffer.length = context->cap.length; | |
260 | in_params[3].buffer.pointer = context->cap.pointer; | |
261 | ||
9dc130fc | 262 | status = acpi_evaluate_object(handle, "_OSC", &input, &output); |
70023de8 SL |
263 | if (ACPI_FAILURE(status)) |
264 | return status; | |
265 | ||
9dc130fc | 266 | if (!output.length) |
70023de8 SL |
267 | return AE_NULL_OBJECT; |
268 | ||
9dc130fc SL |
269 | out_obj = output.pointer; |
270 | if (out_obj->type != ACPI_TYPE_BUFFER | |
271 | || out_obj->buffer.length != context->cap.length) { | |
70023de8 SL |
272 | acpi_print_osc_error(handle, context, |
273 | "_OSC evaluation returned wrong type"); | |
274 | status = AE_TYPE; | |
275 | goto out_kfree; | |
276 | } | |
277 | /* Need to ignore the bit0 in result code */ | |
278 | errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0); | |
279 | if (errors) { | |
280 | if (errors & OSC_REQUEST_ERROR) | |
281 | acpi_print_osc_error(handle, context, | |
282 | "_OSC request failed"); | |
283 | if (errors & OSC_INVALID_UUID_ERROR) | |
284 | acpi_print_osc_error(handle, context, | |
285 | "_OSC invalid UUID"); | |
286 | if (errors & OSC_INVALID_REVISION_ERROR) | |
287 | acpi_print_osc_error(handle, context, | |
288 | "_OSC invalid revision"); | |
289 | if (errors & OSC_CAPABILITIES_MASK_ERROR) { | |
b938a229 | 290 | if (((u32 *)context->cap.pointer)[OSC_QUERY_DWORD] |
70023de8 SL |
291 | & OSC_QUERY_ENABLE) |
292 | goto out_success; | |
293 | status = AE_SUPPORT; | |
294 | goto out_kfree; | |
295 | } | |
296 | status = AE_ERROR; | |
297 | goto out_kfree; | |
298 | } | |
299 | out_success: | |
9dc130fc | 300 | context->ret.length = out_obj->buffer.length; |
e2cb5f08 AE |
301 | context->ret.pointer = kmemdup(out_obj->buffer.pointer, |
302 | context->ret.length, GFP_KERNEL); | |
9dc130fc SL |
303 | if (!context->ret.pointer) { |
304 | status = AE_NO_MEMORY; | |
305 | goto out_kfree; | |
306 | } | |
9dc130fc | 307 | status = AE_OK; |
70023de8 SL |
308 | |
309 | out_kfree: | |
9dc130fc SL |
310 | kfree(output.pointer); |
311 | if (status != AE_OK) | |
312 | context->ret.pointer = NULL; | |
70023de8 SL |
313 | return status; |
314 | } | |
315 | EXPORT_SYMBOL(acpi_run_osc); | |
316 | ||
eccddd32 | 317 | bool osc_sb_apei_support_acked; |
3563ff96 SL |
318 | static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48"; |
319 | static void acpi_bus_osc_support(void) | |
320 | { | |
321 | u32 capbuf[2]; | |
322 | struct acpi_osc_context context = { | |
323 | .uuid_str = sb_uuid_str, | |
324 | .rev = 1, | |
325 | .cap.length = 8, | |
326 | .cap.pointer = capbuf, | |
327 | }; | |
328 | acpi_handle handle; | |
329 | ||
b938a229 BH |
330 | capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE; |
331 | capbuf[OSC_SUPPORT_DWORD] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */ | |
6a4e2b75 ZY |
332 | #if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\ |
333 | defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE) | |
b938a229 | 334 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT; |
3563ff96 | 335 | #endif |
6a4e2b75 ZY |
336 | |
337 | #if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE) | |
b938a229 | 338 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT; |
6a4e2b75 | 339 | #endif |
eccddd32 | 340 | |
b938a229 | 341 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; |
c2f4191a | 342 | |
eccddd32 | 343 | if (!ghes_disable) |
b938a229 | 344 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; |
3563ff96 SL |
345 | if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) |
346 | return; | |
eccddd32 HY |
347 | if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) { |
348 | u32 *capbuf_ret = context.ret.pointer; | |
b938a229 | 349 | if (context.ret.length > OSC_SUPPORT_DWORD) |
eccddd32 | 350 | osc_sb_apei_support_acked = |
b938a229 | 351 | capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT; |
3563ff96 | 352 | kfree(context.ret.pointer); |
eccddd32 HY |
353 | } |
354 | /* do we need to check other returned cap? Sounds no */ | |
3563ff96 SL |
355 | } |
356 | ||
1da177e4 LT |
357 | /* -------------------------------------------------------------------------- |
358 | Notification Handling | |
359 | -------------------------------------------------------------------------- */ | |
360 | ||
1da177e4 LT |
361 | /** |
362 | * acpi_bus_notify | |
363 | * --------------- | |
364 | * Callback for all 'system-level' device notifications (values 0x00-0x7F). | |
365 | */ | |
4be44fcd | 366 | static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) |
1da177e4 | 367 | { |
1a699476 | 368 | struct acpi_device *adev; |
6d278131 | 369 | struct acpi_driver *driver; |
1a699476 | 370 | u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; |
d0103387 | 371 | bool hotplug_event = false; |
02c37bd8 | 372 | |
1da177e4 | 373 | switch (type) { |
1da177e4 | 374 | case ACPI_NOTIFY_BUS_CHECK: |
1a699476 | 375 | acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n"); |
d0103387 | 376 | hotplug_event = true; |
1da177e4 LT |
377 | break; |
378 | ||
379 | case ACPI_NOTIFY_DEVICE_CHECK: | |
1a699476 | 380 | acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n"); |
d0103387 | 381 | hotplug_event = true; |
1da177e4 LT |
382 | break; |
383 | ||
384 | case ACPI_NOTIFY_DEVICE_WAKE: | |
1a699476 | 385 | acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_WAKE event\n"); |
1da177e4 LT |
386 | break; |
387 | ||
388 | case ACPI_NOTIFY_EJECT_REQUEST: | |
1a699476 | 389 | acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n"); |
d0103387 | 390 | hotplug_event = true; |
1da177e4 LT |
391 | break; |
392 | ||
393 | case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: | |
1a699476 | 394 | acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK_LIGHT event\n"); |
1da177e4 LT |
395 | /* TBD: Exactly what does 'light' mean? */ |
396 | break; | |
397 | ||
398 | case ACPI_NOTIFY_FREQUENCY_MISMATCH: | |
1a699476 RW |
399 | acpi_handle_err(handle, "Device cannot be configured due " |
400 | "to a frequency mismatch\n"); | |
1da177e4 LT |
401 | break; |
402 | ||
403 | case ACPI_NOTIFY_BUS_MODE_MISMATCH: | |
1a699476 RW |
404 | acpi_handle_err(handle, "Device cannot be configured due " |
405 | "to a bus mode mismatch\n"); | |
1da177e4 LT |
406 | break; |
407 | ||
408 | case ACPI_NOTIFY_POWER_FAULT: | |
1a699476 | 409 | acpi_handle_err(handle, "Device has suffered a power fault\n"); |
1da177e4 LT |
410 | break; |
411 | ||
412 | default: | |
f66abe92 RW |
413 | acpi_handle_debug(handle, "Unknown event type 0x%x\n", type); |
414 | break; | |
1da177e4 LT |
415 | } |
416 | ||
1a699476 RW |
417 | adev = acpi_bus_get_acpi_device(handle); |
418 | if (!adev) | |
419 | goto err; | |
78ea4639 | 420 | |
1a699476 RW |
421 | driver = adev->driver; |
422 | if (driver && driver->ops.notify && | |
423 | (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) | |
424 | driver->ops.notify(adev, type); | |
425 | ||
d0103387 RW |
426 | if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type))) |
427 | return; | |
428 | ||
1a699476 RW |
429 | acpi_bus_put_acpi_device(adev); |
430 | return; | |
431 | ||
432 | err: | |
700b8422 | 433 | acpi_evaluate_ost(handle, type, ost_code, NULL); |
1da177e4 LT |
434 | } |
435 | ||
436 | /* -------------------------------------------------------------------------- | |
437 | Initialization/Cleanup | |
438 | -------------------------------------------------------------------------- */ | |
439 | ||
4be44fcd | 440 | static int __init acpi_bus_init_irq(void) |
1da177e4 | 441 | { |
6a8c0af6 | 442 | acpi_status status; |
4be44fcd | 443 | char *message = NULL; |
1da177e4 | 444 | |
1da177e4 | 445 | |
aafbcd16 | 446 | /* |
1da177e4 LT |
447 | * Let the system know what interrupt model we are using by |
448 | * evaluating the \_PIC object, if exists. | |
449 | */ | |
450 | ||
451 | switch (acpi_irq_model) { | |
452 | case ACPI_IRQ_MODEL_PIC: | |
453 | message = "PIC"; | |
454 | break; | |
455 | case ACPI_IRQ_MODEL_IOAPIC: | |
456 | message = "IOAPIC"; | |
457 | break; | |
458 | case ACPI_IRQ_MODEL_IOSAPIC: | |
459 | message = "IOSAPIC"; | |
460 | break; | |
3948ec94 JK |
461 | case ACPI_IRQ_MODEL_PLATFORM: |
462 | message = "platform specific model"; | |
463 | break; | |
1da177e4 LT |
464 | default: |
465 | printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n"); | |
d550d98d | 466 | return -ENODEV; |
1da177e4 LT |
467 | } |
468 | ||
469 | printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message); | |
470 | ||
0db98202 | 471 | status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model); |
1da177e4 | 472 | if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { |
a6fc6720 | 473 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC")); |
d550d98d | 474 | return -ENODEV; |
1da177e4 LT |
475 | } |
476 | ||
d550d98d | 477 | return 0; |
1da177e4 LT |
478 | } |
479 | ||
4be44fcd | 480 | void __init acpi_early_init(void) |
1da177e4 | 481 | { |
6a8c0af6 | 482 | acpi_status status; |
1da177e4 LT |
483 | |
484 | if (acpi_disabled) | |
d550d98d | 485 | return; |
1da177e4 | 486 | |
61686124 BM |
487 | printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION); |
488 | ||
4fc0a7e8 LZ |
489 | /* It's safe to verify table checksums during late stage */ |
490 | acpi_gbl_verify_table_checksum = TRUE; | |
491 | ||
1da177e4 LT |
492 | /* enable workarounds, unless strict ACPI spec. compliance */ |
493 | if (!acpi_strict) | |
494 | acpi_gbl_enable_interpreter_slack = TRUE; | |
495 | ||
ad71860a AS |
496 | acpi_gbl_permanent_mmap = 1; |
497 | ||
aa2110cb LM |
498 | /* |
499 | * If the machine falls into the DMI check table, | |
500 | * DSDT will be copied to memory | |
501 | */ | |
502 | dmi_check_system(dsdt_dmi_table); | |
503 | ||
ad71860a AS |
504 | status = acpi_reallocate_root_table(); |
505 | if (ACPI_FAILURE(status)) { | |
506 | printk(KERN_ERR PREFIX | |
507 | "Unable to reallocate ACPI tables\n"); | |
508 | goto error0; | |
509 | } | |
510 | ||
1da177e4 LT |
511 | status = acpi_initialize_subsystem(); |
512 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
513 | printk(KERN_ERR PREFIX |
514 | "Unable to initialize the ACPI Interpreter\n"); | |
1da177e4 LT |
515 | goto error0; |
516 | } | |
517 | ||
518 | status = acpi_load_tables(); | |
519 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
520 | printk(KERN_ERR PREFIX |
521 | "Unable to load the System Description Tables\n"); | |
1da177e4 LT |
522 | goto error0; |
523 | } | |
524 | ||
1da177e4 LT |
525 | #ifdef CONFIG_X86 |
526 | if (!acpi_ioapic) { | |
1da177e4 | 527 | /* compatible (0) means level (3) */ |
5f3b1a8b AS |
528 | if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) { |
529 | acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK; | |
530 | acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL; | |
531 | } | |
1da177e4 | 532 | /* Set PIC-mode SCI trigger type */ |
cee324b1 | 533 | acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt, |
5f3b1a8b | 534 | (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2); |
1da177e4 | 535 | } else { |
1da177e4 | 536 | /* |
cee324b1 | 537 | * now that acpi_gbl_FADT is initialized, |
1da177e4 LT |
538 | * update it with result from INT_SRC_OVR parsing |
539 | */ | |
cee324b1 | 540 | acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi; |
1da177e4 LT |
541 | } |
542 | #endif | |
543 | ||
4505a201 | 544 | status = acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE); |
1da177e4 LT |
545 | if (ACPI_FAILURE(status)) { |
546 | printk(KERN_ERR PREFIX "Unable to enable ACPI\n"); | |
547 | goto error0; | |
548 | } | |
549 | ||
49a12877 MB |
550 | /* |
551 | * If the system is using ACPI then we can be reasonably | |
552 | * confident that any regulators are managed by the firmware | |
553 | * so tell the regulator core it has everything it needs to | |
554 | * know. | |
555 | */ | |
556 | regulator_has_full_constraints(); | |
557 | ||
d550d98d | 558 | return; |
1da177e4 | 559 | |
4be44fcd | 560 | error0: |
1da177e4 | 561 | disable_acpi(); |
d550d98d | 562 | return; |
1da177e4 LT |
563 | } |
564 | ||
4be44fcd | 565 | static int __init acpi_bus_init(void) |
1da177e4 | 566 | { |
6a8c0af6 BH |
567 | int result; |
568 | acpi_status status; | |
1da177e4 | 569 | |
176f9c18 | 570 | acpi_os_initialize1(); |
1da177e4 | 571 | |
4505a201 | 572 | status = acpi_enable_subsystem(ACPI_NO_ACPI_ENABLE); |
1da177e4 | 573 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
574 | printk(KERN_ERR PREFIX |
575 | "Unable to start the ACPI Interpreter\n"); | |
1da177e4 LT |
576 | goto error1; |
577 | } | |
578 | ||
1da177e4 LT |
579 | /* |
580 | * ACPI 2.0 requires the EC driver to be loaded and work before | |
581 | * the EC device is found in the namespace (i.e. before acpi_initialize_objects() | |
582 | * is called). | |
583 | * | |
aafbcd16 | 584 | * This is accomplished by looking for the ECDT table, and getting |
1da177e4 LT |
585 | * the EC parameters out of that. |
586 | */ | |
587 | status = acpi_ec_ecdt_probe(); | |
588 | /* Ignore result. Not having an ECDT is not fatal. */ | |
1da177e4 LT |
589 | |
590 | status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION); | |
591 | if (ACPI_FAILURE(status)) { | |
592 | printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n"); | |
593 | goto error1; | |
594 | } | |
595 | ||
fc54ab72 LM |
596 | /* |
597 | * _OSC method may exist in module level code, | |
598 | * so it must be run after ACPI_FULL_INITIALIZATION | |
599 | */ | |
600 | acpi_bus_osc_support(); | |
601 | ||
b1d248d9 ZR |
602 | /* |
603 | * _PDC control method may load dynamic SSDT tables, | |
604 | * and we need to install the table handler before that. | |
605 | */ | |
606 | acpi_sysfs_init(); | |
607 | ||
78f16996 AC |
608 | acpi_early_processor_set_pdc(); |
609 | ||
455c8793 ZY |
610 | /* |
611 | * Maybe EC region is required at bus_scan/acpi_get_devices. So it | |
612 | * is necessary to enable it as early as possible. | |
613 | */ | |
614 | acpi_boot_ec_enable(); | |
615 | ||
1da177e4 LT |
616 | printk(KERN_INFO PREFIX "Interpreter enabled\n"); |
617 | ||
aafbcd16 AS |
618 | /* Initialize sleep structures */ |
619 | acpi_sleep_init(); | |
620 | ||
1da177e4 LT |
621 | /* |
622 | * Get the system interrupt model and evaluate \_PIC. | |
623 | */ | |
624 | result = acpi_bus_init_irq(); | |
625 | if (result) | |
626 | goto error1; | |
627 | ||
628 | /* | |
629 | * Register the for all standard device notifications. | |
630 | */ | |
4be44fcd LB |
631 | status = |
632 | acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, | |
633 | &acpi_bus_notify, NULL); | |
1da177e4 | 634 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
635 | printk(KERN_ERR PREFIX |
636 | "Unable to register for device notifications\n"); | |
1da177e4 LT |
637 | goto error1; |
638 | } | |
639 | ||
640 | /* | |
641 | * Create the top ACPI proc directory | |
642 | */ | |
643 | acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL); | |
644 | ||
d550d98d | 645 | return 0; |
1da177e4 LT |
646 | |
647 | /* Mimic structured exception handling */ | |
4be44fcd | 648 | error1: |
1da177e4 | 649 | acpi_terminate(); |
d550d98d | 650 | return -ENODEV; |
1da177e4 LT |
651 | } |
652 | ||
99e0d2fc | 653 | struct kobject *acpi_kobj; |
f2d4753f | 654 | EXPORT_SYMBOL_GPL(acpi_kobj); |
1da177e4 | 655 | |
4be44fcd | 656 | static int __init acpi_init(void) |
1da177e4 | 657 | { |
6831c6ed | 658 | int result; |
1da177e4 | 659 | |
1da177e4 LT |
660 | if (acpi_disabled) { |
661 | printk(KERN_INFO PREFIX "Interpreter disabled.\n"); | |
d550d98d | 662 | return -ENODEV; |
1da177e4 LT |
663 | } |
664 | ||
f62ed9e3 | 665 | acpi_kobj = kobject_create_and_add("acpi", firmware_kobj); |
99e0d2fc | 666 | if (!acpi_kobj) { |
96b2dd1f | 667 | printk(KERN_WARNING "%s: kset create error\n", __func__); |
99e0d2fc GKH |
668 | acpi_kobj = NULL; |
669 | } | |
1da177e4 | 670 | |
0e46517d | 671 | init_acpi_device_notify(); |
1da177e4 | 672 | result = acpi_bus_init(); |
6831c6ed | 673 | if (result) { |
1da177e4 | 674 | disable_acpi(); |
81d0273d | 675 | return result; |
6831c6ed | 676 | } |
81d0273d | 677 | |
6831c6ed | 678 | pci_mmcfg_late_init(); |
e747f274 | 679 | acpi_scan_init(); |
a5f820fe | 680 | acpi_ec_init(); |
a25ee920 | 681 | acpi_debugfs_init(); |
9cee43e0 | 682 | acpi_sleep_proc_init(); |
201b8c65 | 683 | acpi_wakeup_device_init(); |
6831c6ed | 684 | return 0; |
1da177e4 LT |
685 | } |
686 | ||
687 | subsys_initcall(acpi_init); |