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> | |
eccddd32 | 42 | #include <acpi/apei.h> |
eb27cae8 | 43 | #include <linux/dmi.h> |
cd51e61c | 44 | #include <linux/suspend.h> |
1da177e4 | 45 | |
e60cc7a6 BH |
46 | #include "internal.h" |
47 | ||
1da177e4 | 48 | #define _COMPONENT ACPI_BUS_COMPONENT |
f52fd66d | 49 | ACPI_MODULE_NAME("bus"); |
1da177e4 | 50 | |
4be44fcd LB |
51 | struct acpi_device *acpi_root; |
52 | struct proc_dir_entry *acpi_root_dir; | |
1da177e4 LT |
53 | EXPORT_SYMBOL(acpi_root_dir); |
54 | ||
55 | #define STRUCT_TO_INT(s) (*((int*)&s)) | |
56 | ||
6415e12b | 57 | |
cce4f632 | 58 | #ifdef CONFIG_X86 |
aa2110cb LM |
59 | static int set_copy_dsdt(const struct dmi_system_id *id) |
60 | { | |
61 | printk(KERN_NOTICE "%s detected - " | |
62 | "force copy of DSDT to local memory\n", id->ident); | |
63 | acpi_gbl_copy_dsdt_locally = 1; | |
64 | return 0; | |
65 | } | |
66 | ||
67 | static struct dmi_system_id dsdt_dmi_table[] __initdata = { | |
68 | /* | |
100cf877 | 69 | * Invoke DSDT corruption work-around on all Toshiba Satellite. |
aa2110cb LM |
70 | * https://bugzilla.kernel.org/show_bug.cgi?id=14679 |
71 | */ | |
72 | { | |
73 | .callback = set_copy_dsdt, | |
100cf877 | 74 | .ident = "TOSHIBA Satellite", |
aa2110cb LM |
75 | .matches = { |
76 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
100cf877 | 77 | DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), |
aa2110cb | 78 | }, |
cce4f632 LM |
79 | }, |
80 | {} | |
aa2110cb | 81 | }; |
cce4f632 LM |
82 | #else |
83 | static struct dmi_system_id dsdt_dmi_table[] __initdata = { | |
84 | {} | |
85 | }; | |
86 | #endif | |
aa2110cb | 87 | |
1da177e4 LT |
88 | /* -------------------------------------------------------------------------- |
89 | Device Management | |
90 | -------------------------------------------------------------------------- */ | |
91 | ||
402ac536 BH |
92 | acpi_status acpi_bus_get_status_handle(acpi_handle handle, |
93 | unsigned long long *sta) | |
1da177e4 | 94 | { |
402ac536 | 95 | acpi_status status; |
4be44fcd | 96 | |
402ac536 BH |
97 | status = acpi_evaluate_integer(handle, "_STA", NULL, sta); |
98 | if (ACPI_SUCCESS(status)) | |
99 | return AE_OK; | |
1da177e4 | 100 | |
402ac536 BH |
101 | if (status == AE_NOT_FOUND) { |
102 | *sta = ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | | |
103 | ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING; | |
104 | return AE_OK; | |
1da177e4 | 105 | } |
402ac536 BH |
106 | return status; |
107 | } | |
1da177e4 | 108 | |
402ac536 BH |
109 | int acpi_bus_get_status(struct acpi_device *device) |
110 | { | |
111 | acpi_status status; | |
112 | unsigned long long sta; | |
113 | ||
114 | status = acpi_bus_get_status_handle(device->handle, &sta); | |
115 | if (ACPI_FAILURE(status)) | |
116 | return -ENODEV; | |
117 | ||
118 | STRUCT_TO_INT(device->status) = (int) sta; | |
1da177e4 LT |
119 | |
120 | if (device->status.functional && !device->status.present) { | |
39a0ad87 ZY |
121 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: " |
122 | "functional but not present;\n", | |
123 | device->pnp.bus_id, | |
124 | (u32) STRUCT_TO_INT(device->status))); | |
1da177e4 LT |
125 | } |
126 | ||
4be44fcd LB |
127 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n", |
128 | device->pnp.bus_id, | |
129 | (u32) STRUCT_TO_INT(device->status))); | |
d550d98d | 130 | return 0; |
1da177e4 | 131 | } |
4be44fcd | 132 | EXPORT_SYMBOL(acpi_bus_get_status); |
1da177e4 | 133 | |
20733939 | 134 | void acpi_bus_private_data_handler(acpi_handle handle, |
8e4319c4 | 135 | void *context) |
20733939 ZR |
136 | { |
137 | return; | |
138 | } | |
139 | EXPORT_SYMBOL(acpi_bus_private_data_handler); | |
140 | ||
141 | int acpi_bus_get_private_data(acpi_handle handle, void **data) | |
142 | { | |
6a8c0af6 | 143 | acpi_status status; |
20733939 ZR |
144 | |
145 | if (!*data) | |
146 | return -EINVAL; | |
147 | ||
148 | status = acpi_get_data(handle, acpi_bus_private_data_handler, data); | |
149 | if (ACPI_FAILURE(status) || !*data) { | |
150 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n", | |
151 | handle)); | |
152 | return -ENODEV; | |
153 | } | |
154 | ||
155 | return 0; | |
156 | } | |
157 | EXPORT_SYMBOL(acpi_bus_get_private_data); | |
158 | ||
70023de8 SL |
159 | static void acpi_print_osc_error(acpi_handle handle, |
160 | struct acpi_osc_context *context, char *error) | |
161 | { | |
162 | struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER}; | |
163 | int i; | |
164 | ||
165 | if (ACPI_FAILURE(acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer))) | |
166 | printk(KERN_DEBUG "%s\n", error); | |
167 | else { | |
168 | printk(KERN_DEBUG "%s:%s\n", (char *)buffer.pointer, error); | |
169 | kfree(buffer.pointer); | |
170 | } | |
171 | printk(KERN_DEBUG"_OSC request data:"); | |
172 | for (i = 0; i < context->cap.length; i += sizeof(u32)) | |
173 | printk("%x ", *((u32 *)(context->cap.pointer + i))); | |
174 | printk("\n"); | |
175 | } | |
176 | ||
70023de8 SL |
177 | static acpi_status acpi_str_to_uuid(char *str, u8 *uuid) |
178 | { | |
179 | int i; | |
180 | static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21, | |
181 | 24, 26, 28, 30, 32, 34}; | |
182 | ||
183 | if (strlen(str) != 36) | |
184 | return AE_BAD_PARAMETER; | |
185 | for (i = 0; i < 36; i++) { | |
186 | if (i == 8 || i == 13 || i == 18 || i == 23) { | |
187 | if (str[i] != '-') | |
188 | return AE_BAD_PARAMETER; | |
189 | } else if (!isxdigit(str[i])) | |
190 | return AE_BAD_PARAMETER; | |
191 | } | |
192 | for (i = 0; i < 16; i++) { | |
965fd9e9 AS |
193 | uuid[i] = hex_to_bin(str[opc_map_to_uuid[i]]) << 4; |
194 | uuid[i] |= hex_to_bin(str[opc_map_to_uuid[i] + 1]); | |
70023de8 SL |
195 | } |
196 | return AE_OK; | |
197 | } | |
198 | ||
199 | acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) | |
200 | { | |
201 | acpi_status status; | |
202 | struct acpi_object_list input; | |
203 | union acpi_object in_params[4]; | |
204 | union acpi_object *out_obj; | |
205 | u8 uuid[16]; | |
206 | u32 errors; | |
9dc130fc | 207 | struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; |
70023de8 SL |
208 | |
209 | if (!context) | |
210 | return AE_ERROR; | |
211 | if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid))) | |
212 | return AE_ERROR; | |
213 | context->ret.length = ACPI_ALLOCATE_BUFFER; | |
214 | context->ret.pointer = NULL; | |
215 | ||
216 | /* Setting up input parameters */ | |
217 | input.count = 4; | |
218 | input.pointer = in_params; | |
219 | in_params[0].type = ACPI_TYPE_BUFFER; | |
220 | in_params[0].buffer.length = 16; | |
221 | in_params[0].buffer.pointer = uuid; | |
222 | in_params[1].type = ACPI_TYPE_INTEGER; | |
223 | in_params[1].integer.value = context->rev; | |
224 | in_params[2].type = ACPI_TYPE_INTEGER; | |
225 | in_params[2].integer.value = context->cap.length/sizeof(u32); | |
226 | in_params[3].type = ACPI_TYPE_BUFFER; | |
227 | in_params[3].buffer.length = context->cap.length; | |
228 | in_params[3].buffer.pointer = context->cap.pointer; | |
229 | ||
9dc130fc | 230 | status = acpi_evaluate_object(handle, "_OSC", &input, &output); |
70023de8 SL |
231 | if (ACPI_FAILURE(status)) |
232 | return status; | |
233 | ||
9dc130fc | 234 | if (!output.length) |
70023de8 SL |
235 | return AE_NULL_OBJECT; |
236 | ||
9dc130fc SL |
237 | out_obj = output.pointer; |
238 | if (out_obj->type != ACPI_TYPE_BUFFER | |
239 | || out_obj->buffer.length != context->cap.length) { | |
70023de8 SL |
240 | acpi_print_osc_error(handle, context, |
241 | "_OSC evaluation returned wrong type"); | |
242 | status = AE_TYPE; | |
243 | goto out_kfree; | |
244 | } | |
245 | /* Need to ignore the bit0 in result code */ | |
246 | errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0); | |
247 | if (errors) { | |
248 | if (errors & OSC_REQUEST_ERROR) | |
249 | acpi_print_osc_error(handle, context, | |
250 | "_OSC request failed"); | |
251 | if (errors & OSC_INVALID_UUID_ERROR) | |
252 | acpi_print_osc_error(handle, context, | |
253 | "_OSC invalid UUID"); | |
254 | if (errors & OSC_INVALID_REVISION_ERROR) | |
255 | acpi_print_osc_error(handle, context, | |
256 | "_OSC invalid revision"); | |
257 | if (errors & OSC_CAPABILITIES_MASK_ERROR) { | |
258 | if (((u32 *)context->cap.pointer)[OSC_QUERY_TYPE] | |
259 | & OSC_QUERY_ENABLE) | |
260 | goto out_success; | |
261 | status = AE_SUPPORT; | |
262 | goto out_kfree; | |
263 | } | |
264 | status = AE_ERROR; | |
265 | goto out_kfree; | |
266 | } | |
267 | out_success: | |
9dc130fc | 268 | context->ret.length = out_obj->buffer.length; |
e2cb5f08 AE |
269 | context->ret.pointer = kmemdup(out_obj->buffer.pointer, |
270 | context->ret.length, GFP_KERNEL); | |
9dc130fc SL |
271 | if (!context->ret.pointer) { |
272 | status = AE_NO_MEMORY; | |
273 | goto out_kfree; | |
274 | } | |
9dc130fc | 275 | status = AE_OK; |
70023de8 SL |
276 | |
277 | out_kfree: | |
9dc130fc SL |
278 | kfree(output.pointer); |
279 | if (status != AE_OK) | |
280 | context->ret.pointer = NULL; | |
70023de8 SL |
281 | return status; |
282 | } | |
283 | EXPORT_SYMBOL(acpi_run_osc); | |
284 | ||
eccddd32 | 285 | bool osc_sb_apei_support_acked; |
3563ff96 SL |
286 | static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48"; |
287 | static void acpi_bus_osc_support(void) | |
288 | { | |
289 | u32 capbuf[2]; | |
290 | struct acpi_osc_context context = { | |
291 | .uuid_str = sb_uuid_str, | |
292 | .rev = 1, | |
293 | .cap.length = 8, | |
294 | .cap.pointer = capbuf, | |
295 | }; | |
296 | acpi_handle handle; | |
297 | ||
298 | capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE; | |
299 | capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */ | |
6a4e2b75 ZY |
300 | #if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\ |
301 | defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE) | |
3563ff96 SL |
302 | capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT; |
303 | #endif | |
6a4e2b75 ZY |
304 | |
305 | #if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE) | |
306 | capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT; | |
307 | #endif | |
eccddd32 | 308 | |
c2f4191a TK |
309 | #ifdef ACPI_HOTPLUG_OST |
310 | capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_HOTPLUG_OST_SUPPORT; | |
311 | #endif | |
312 | ||
eccddd32 HY |
313 | if (!ghes_disable) |
314 | capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_APEI_SUPPORT; | |
3563ff96 SL |
315 | if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) |
316 | return; | |
eccddd32 HY |
317 | if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) { |
318 | u32 *capbuf_ret = context.ret.pointer; | |
319 | if (context.ret.length > OSC_SUPPORT_TYPE) | |
320 | osc_sb_apei_support_acked = | |
321 | capbuf_ret[OSC_SUPPORT_TYPE] & OSC_SB_APEI_SUPPORT; | |
3563ff96 | 322 | kfree(context.ret.pointer); |
eccddd32 HY |
323 | } |
324 | /* do we need to check other returned cap? Sounds no */ | |
3563ff96 SL |
325 | } |
326 | ||
1da177e4 LT |
327 | /* -------------------------------------------------------------------------- |
328 | Notification Handling | |
329 | -------------------------------------------------------------------------- */ | |
330 | ||
ff754e2e | 331 | static void acpi_bus_check_device(acpi_handle handle) |
1da177e4 | 332 | { |
ff754e2e | 333 | struct acpi_device *device; |
cdd5b8ca | 334 | acpi_status status; |
1da177e4 LT |
335 | struct acpi_device_status old_status; |
336 | ||
ff754e2e BH |
337 | if (acpi_bus_get_device(handle, &device)) |
338 | return; | |
1da177e4 | 339 | if (!device) |
cdd5b8ca | 340 | return; |
1da177e4 | 341 | |
1da177e4 LT |
342 | old_status = device->status; |
343 | ||
344 | /* | |
345 | * Make sure this device's parent is present before we go about | |
346 | * messing with the device. | |
347 | */ | |
348 | if (device->parent && !device->parent->status.present) { | |
349 | device->status = device->parent->status; | |
cdd5b8ca | 350 | return; |
1da177e4 LT |
351 | } |
352 | ||
353 | status = acpi_bus_get_status(device); | |
354 | if (ACPI_FAILURE(status)) | |
cdd5b8ca | 355 | return; |
1da177e4 LT |
356 | |
357 | if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status)) | |
cdd5b8ca | 358 | return; |
1da177e4 | 359 | |
1da177e4 LT |
360 | /* |
361 | * Device Insertion/Removal | |
362 | */ | |
363 | if ((device->status.present) && !(old_status.present)) { | |
364 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device insertion detected\n")); | |
365 | /* TBD: Handle device insertion */ | |
4be44fcd | 366 | } else if (!(device->status.present) && (old_status.present)) { |
1da177e4 LT |
367 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n")); |
368 | /* TBD: Handle device removal */ | |
369 | } | |
1da177e4 LT |
370 | } |
371 | ||
ff754e2e | 372 | static void acpi_bus_check_scope(acpi_handle handle) |
1da177e4 | 373 | { |
1da177e4 | 374 | /* Status Change? */ |
ff754e2e | 375 | acpi_bus_check_device(handle); |
1da177e4 | 376 | |
1da177e4 LT |
377 | /* |
378 | * TBD: Enumerate child devices within this device's scope and | |
379 | * run acpi_bus_check_device()'s on them. | |
380 | */ | |
1da177e4 LT |
381 | } |
382 | ||
1da177e4 LT |
383 | /** |
384 | * acpi_bus_notify | |
385 | * --------------- | |
386 | * Callback for all 'system-level' device notifications (values 0x00-0x7F). | |
387 | */ | |
4be44fcd | 388 | static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) |
1da177e4 | 389 | { |
4be44fcd | 390 | struct acpi_device *device = NULL; |
6d278131 | 391 | struct acpi_driver *driver; |
1da177e4 | 392 | |
02c37bd8 BH |
393 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n", |
394 | type, handle)); | |
395 | ||
1da177e4 LT |
396 | switch (type) { |
397 | ||
398 | case ACPI_NOTIFY_BUS_CHECK: | |
ff754e2e | 399 | acpi_bus_check_scope(handle); |
aafbcd16 | 400 | /* |
1da177e4 | 401 | * TBD: We'll need to outsource certain events to non-ACPI |
4be44fcd | 402 | * drivers via the device manager (device.c). |
1da177e4 LT |
403 | */ |
404 | break; | |
405 | ||
406 | case ACPI_NOTIFY_DEVICE_CHECK: | |
ff754e2e | 407 | acpi_bus_check_device(handle); |
aafbcd16 | 408 | /* |
1da177e4 | 409 | * TBD: We'll need to outsource certain events to non-ACPI |
4be44fcd | 410 | * drivers via the device manager (device.c). |
1da177e4 LT |
411 | */ |
412 | break; | |
413 | ||
414 | case ACPI_NOTIFY_DEVICE_WAKE: | |
1da177e4 LT |
415 | /* TBD */ |
416 | break; | |
417 | ||
418 | case ACPI_NOTIFY_EJECT_REQUEST: | |
1da177e4 LT |
419 | /* TBD */ |
420 | break; | |
421 | ||
422 | case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: | |
1da177e4 LT |
423 | /* TBD: Exactly what does 'light' mean? */ |
424 | break; | |
425 | ||
426 | case ACPI_NOTIFY_FREQUENCY_MISMATCH: | |
1da177e4 LT |
427 | /* TBD */ |
428 | break; | |
429 | ||
430 | case ACPI_NOTIFY_BUS_MODE_MISMATCH: | |
1da177e4 LT |
431 | /* TBD */ |
432 | break; | |
433 | ||
434 | case ACPI_NOTIFY_POWER_FAULT: | |
1da177e4 LT |
435 | /* TBD */ |
436 | break; | |
437 | ||
438 | default: | |
4be44fcd LB |
439 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
440 | "Received unknown/unsupported notification [%08x]\n", | |
441 | type)); | |
1da177e4 LT |
442 | break; |
443 | } | |
444 | ||
ff754e2e BH |
445 | acpi_bus_get_device(handle, &device); |
446 | if (device) { | |
447 | driver = device->driver; | |
448 | if (driver && driver->ops.notify && | |
449 | (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) | |
450 | driver->ops.notify(device, type); | |
451 | } | |
1da177e4 LT |
452 | } |
453 | ||
454 | /* -------------------------------------------------------------------------- | |
455 | Initialization/Cleanup | |
456 | -------------------------------------------------------------------------- */ | |
457 | ||
4be44fcd | 458 | static int __init acpi_bus_init_irq(void) |
1da177e4 | 459 | { |
6a8c0af6 | 460 | acpi_status status; |
4be44fcd | 461 | char *message = NULL; |
1da177e4 | 462 | |
1da177e4 | 463 | |
aafbcd16 | 464 | /* |
1da177e4 LT |
465 | * Let the system know what interrupt model we are using by |
466 | * evaluating the \_PIC object, if exists. | |
467 | */ | |
468 | ||
469 | switch (acpi_irq_model) { | |
470 | case ACPI_IRQ_MODEL_PIC: | |
471 | message = "PIC"; | |
472 | break; | |
473 | case ACPI_IRQ_MODEL_IOAPIC: | |
474 | message = "IOAPIC"; | |
475 | break; | |
476 | case ACPI_IRQ_MODEL_IOSAPIC: | |
477 | message = "IOSAPIC"; | |
478 | break; | |
3948ec94 JK |
479 | case ACPI_IRQ_MODEL_PLATFORM: |
480 | message = "platform specific model"; | |
481 | break; | |
1da177e4 LT |
482 | default: |
483 | printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n"); | |
d550d98d | 484 | return -ENODEV; |
1da177e4 LT |
485 | } |
486 | ||
487 | printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message); | |
488 | ||
0db98202 | 489 | status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model); |
1da177e4 | 490 | if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { |
a6fc6720 | 491 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC")); |
d550d98d | 492 | return -ENODEV; |
1da177e4 LT |
493 | } |
494 | ||
d550d98d | 495 | return 0; |
1da177e4 LT |
496 | } |
497 | ||
67a119f9 | 498 | u8 acpi_gbl_permanent_mmap; |
ad71860a AS |
499 | |
500 | ||
4be44fcd | 501 | void __init acpi_early_init(void) |
1da177e4 | 502 | { |
6a8c0af6 | 503 | acpi_status status; |
1da177e4 LT |
504 | |
505 | if (acpi_disabled) | |
d550d98d | 506 | return; |
1da177e4 | 507 | |
61686124 BM |
508 | printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION); |
509 | ||
1da177e4 LT |
510 | /* enable workarounds, unless strict ACPI spec. compliance */ |
511 | if (!acpi_strict) | |
512 | acpi_gbl_enable_interpreter_slack = TRUE; | |
513 | ||
ad71860a AS |
514 | acpi_gbl_permanent_mmap = 1; |
515 | ||
aa2110cb LM |
516 | /* |
517 | * If the machine falls into the DMI check table, | |
518 | * DSDT will be copied to memory | |
519 | */ | |
520 | dmi_check_system(dsdt_dmi_table); | |
521 | ||
ad71860a AS |
522 | status = acpi_reallocate_root_table(); |
523 | if (ACPI_FAILURE(status)) { | |
524 | printk(KERN_ERR PREFIX | |
525 | "Unable to reallocate ACPI tables\n"); | |
526 | goto error0; | |
527 | } | |
528 | ||
1da177e4 LT |
529 | status = acpi_initialize_subsystem(); |
530 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
531 | printk(KERN_ERR PREFIX |
532 | "Unable to initialize the ACPI Interpreter\n"); | |
1da177e4 LT |
533 | goto error0; |
534 | } | |
535 | ||
536 | status = acpi_load_tables(); | |
537 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
538 | printk(KERN_ERR PREFIX |
539 | "Unable to load the System Description Tables\n"); | |
1da177e4 LT |
540 | goto error0; |
541 | } | |
542 | ||
1da177e4 LT |
543 | #ifdef CONFIG_X86 |
544 | if (!acpi_ioapic) { | |
1da177e4 | 545 | /* compatible (0) means level (3) */ |
5f3b1a8b AS |
546 | if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) { |
547 | acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK; | |
548 | acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL; | |
549 | } | |
1da177e4 | 550 | /* Set PIC-mode SCI trigger type */ |
cee324b1 | 551 | acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt, |
5f3b1a8b | 552 | (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2); |
1da177e4 | 553 | } else { |
1da177e4 | 554 | /* |
cee324b1 | 555 | * now that acpi_gbl_FADT is initialized, |
1da177e4 LT |
556 | * update it with result from INT_SRC_OVR parsing |
557 | */ | |
cee324b1 | 558 | acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi; |
1da177e4 LT |
559 | } |
560 | #endif | |
561 | ||
4505a201 | 562 | status = acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE); |
1da177e4 LT |
563 | if (ACPI_FAILURE(status)) { |
564 | printk(KERN_ERR PREFIX "Unable to enable ACPI\n"); | |
565 | goto error0; | |
566 | } | |
567 | ||
d550d98d | 568 | return; |
1da177e4 | 569 | |
4be44fcd | 570 | error0: |
1da177e4 | 571 | disable_acpi(); |
d550d98d | 572 | return; |
1da177e4 LT |
573 | } |
574 | ||
4be44fcd | 575 | static int __init acpi_bus_init(void) |
1da177e4 | 576 | { |
6a8c0af6 BH |
577 | int result; |
578 | acpi_status status; | |
1da177e4 | 579 | |
176f9c18 | 580 | acpi_os_initialize1(); |
1da177e4 | 581 | |
4505a201 | 582 | status = acpi_enable_subsystem(ACPI_NO_ACPI_ENABLE); |
1da177e4 | 583 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
584 | printk(KERN_ERR PREFIX |
585 | "Unable to start the ACPI Interpreter\n"); | |
1da177e4 LT |
586 | goto error1; |
587 | } | |
588 | ||
1da177e4 LT |
589 | /* |
590 | * ACPI 2.0 requires the EC driver to be loaded and work before | |
591 | * the EC device is found in the namespace (i.e. before acpi_initialize_objects() | |
592 | * is called). | |
593 | * | |
aafbcd16 | 594 | * This is accomplished by looking for the ECDT table, and getting |
1da177e4 LT |
595 | * the EC parameters out of that. |
596 | */ | |
597 | status = acpi_ec_ecdt_probe(); | |
598 | /* Ignore result. Not having an ECDT is not fatal. */ | |
1da177e4 LT |
599 | |
600 | status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION); | |
601 | if (ACPI_FAILURE(status)) { | |
602 | printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n"); | |
603 | goto error1; | |
604 | } | |
605 | ||
fc54ab72 LM |
606 | /* |
607 | * _OSC method may exist in module level code, | |
608 | * so it must be run after ACPI_FULL_INITIALIZATION | |
609 | */ | |
610 | acpi_bus_osc_support(); | |
611 | ||
b1d248d9 ZR |
612 | /* |
613 | * _PDC control method may load dynamic SSDT tables, | |
614 | * and we need to install the table handler before that. | |
615 | */ | |
616 | acpi_sysfs_init(); | |
617 | ||
78f16996 AC |
618 | acpi_early_processor_set_pdc(); |
619 | ||
455c8793 ZY |
620 | /* |
621 | * Maybe EC region is required at bus_scan/acpi_get_devices. So it | |
622 | * is necessary to enable it as early as possible. | |
623 | */ | |
624 | acpi_boot_ec_enable(); | |
625 | ||
1da177e4 LT |
626 | printk(KERN_INFO PREFIX "Interpreter enabled\n"); |
627 | ||
aafbcd16 AS |
628 | /* Initialize sleep structures */ |
629 | acpi_sleep_init(); | |
630 | ||
1da177e4 LT |
631 | /* |
632 | * Get the system interrupt model and evaluate \_PIC. | |
633 | */ | |
634 | result = acpi_bus_init_irq(); | |
635 | if (result) | |
636 | goto error1; | |
637 | ||
638 | /* | |
639 | * Register the for all standard device notifications. | |
640 | */ | |
4be44fcd LB |
641 | status = |
642 | acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, | |
643 | &acpi_bus_notify, NULL); | |
1da177e4 | 644 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
645 | printk(KERN_ERR PREFIX |
646 | "Unable to register for device notifications\n"); | |
1da177e4 LT |
647 | goto error1; |
648 | } | |
649 | ||
650 | /* | |
651 | * Create the top ACPI proc directory | |
652 | */ | |
653 | acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL); | |
654 | ||
d550d98d | 655 | return 0; |
1da177e4 LT |
656 | |
657 | /* Mimic structured exception handling */ | |
4be44fcd | 658 | error1: |
1da177e4 | 659 | acpi_terminate(); |
d550d98d | 660 | return -ENODEV; |
1da177e4 LT |
661 | } |
662 | ||
99e0d2fc | 663 | struct kobject *acpi_kobj; |
f2d4753f | 664 | EXPORT_SYMBOL_GPL(acpi_kobj); |
1da177e4 | 665 | |
4be44fcd | 666 | static int __init acpi_init(void) |
1da177e4 | 667 | { |
6831c6ed | 668 | int result; |
1da177e4 | 669 | |
1da177e4 LT |
670 | if (acpi_disabled) { |
671 | printk(KERN_INFO PREFIX "Interpreter disabled.\n"); | |
d550d98d | 672 | return -ENODEV; |
1da177e4 LT |
673 | } |
674 | ||
f62ed9e3 | 675 | acpi_kobj = kobject_create_and_add("acpi", firmware_kobj); |
99e0d2fc | 676 | if (!acpi_kobj) { |
96b2dd1f | 677 | printk(KERN_WARNING "%s: kset create error\n", __func__); |
99e0d2fc GKH |
678 | acpi_kobj = NULL; |
679 | } | |
1da177e4 | 680 | |
0e46517d | 681 | init_acpi_device_notify(); |
1da177e4 | 682 | result = acpi_bus_init(); |
6831c6ed | 683 | if (result) { |
1da177e4 | 684 | disable_acpi(); |
81d0273d | 685 | return result; |
6831c6ed | 686 | } |
81d0273d | 687 | |
6831c6ed | 688 | pci_mmcfg_late_init(); |
e747f274 | 689 | acpi_scan_init(); |
a5f820fe | 690 | acpi_ec_init(); |
a25ee920 | 691 | acpi_debugfs_init(); |
9cee43e0 | 692 | acpi_sleep_proc_init(); |
201b8c65 | 693 | acpi_wakeup_device_init(); |
6831c6ed | 694 | return 0; |
1da177e4 LT |
695 | } |
696 | ||
697 | subsys_initcall(acpi_init); |