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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> | |
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 | ||
4b3db708 | 177 | acpi_status acpi_str_to_uuid(char *str, u8 *uuid) |
70023de8 SL |
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 | } | |
4b3db708 | 198 | EXPORT_SYMBOL_GPL(acpi_str_to_uuid); |
70023de8 SL |
199 | |
200 | acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) | |
201 | { | |
202 | acpi_status status; | |
203 | struct acpi_object_list input; | |
204 | union acpi_object in_params[4]; | |
205 | union acpi_object *out_obj; | |
206 | u8 uuid[16]; | |
207 | u32 errors; | |
9dc130fc | 208 | struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; |
70023de8 SL |
209 | |
210 | if (!context) | |
211 | return AE_ERROR; | |
212 | if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid))) | |
213 | return AE_ERROR; | |
214 | context->ret.length = ACPI_ALLOCATE_BUFFER; | |
215 | context->ret.pointer = NULL; | |
216 | ||
217 | /* Setting up input parameters */ | |
218 | input.count = 4; | |
219 | input.pointer = in_params; | |
220 | in_params[0].type = ACPI_TYPE_BUFFER; | |
221 | in_params[0].buffer.length = 16; | |
222 | in_params[0].buffer.pointer = uuid; | |
223 | in_params[1].type = ACPI_TYPE_INTEGER; | |
224 | in_params[1].integer.value = context->rev; | |
225 | in_params[2].type = ACPI_TYPE_INTEGER; | |
226 | in_params[2].integer.value = context->cap.length/sizeof(u32); | |
227 | in_params[3].type = ACPI_TYPE_BUFFER; | |
228 | in_params[3].buffer.length = context->cap.length; | |
229 | in_params[3].buffer.pointer = context->cap.pointer; | |
230 | ||
9dc130fc | 231 | status = acpi_evaluate_object(handle, "_OSC", &input, &output); |
70023de8 SL |
232 | if (ACPI_FAILURE(status)) |
233 | return status; | |
234 | ||
9dc130fc | 235 | if (!output.length) |
70023de8 SL |
236 | return AE_NULL_OBJECT; |
237 | ||
9dc130fc SL |
238 | out_obj = output.pointer; |
239 | if (out_obj->type != ACPI_TYPE_BUFFER | |
240 | || out_obj->buffer.length != context->cap.length) { | |
70023de8 SL |
241 | acpi_print_osc_error(handle, context, |
242 | "_OSC evaluation returned wrong type"); | |
243 | status = AE_TYPE; | |
244 | goto out_kfree; | |
245 | } | |
246 | /* Need to ignore the bit0 in result code */ | |
247 | errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0); | |
248 | if (errors) { | |
249 | if (errors & OSC_REQUEST_ERROR) | |
250 | acpi_print_osc_error(handle, context, | |
251 | "_OSC request failed"); | |
252 | if (errors & OSC_INVALID_UUID_ERROR) | |
253 | acpi_print_osc_error(handle, context, | |
254 | "_OSC invalid UUID"); | |
255 | if (errors & OSC_INVALID_REVISION_ERROR) | |
256 | acpi_print_osc_error(handle, context, | |
257 | "_OSC invalid revision"); | |
258 | if (errors & OSC_CAPABILITIES_MASK_ERROR) { | |
b938a229 | 259 | if (((u32 *)context->cap.pointer)[OSC_QUERY_DWORD] |
70023de8 SL |
260 | & OSC_QUERY_ENABLE) |
261 | goto out_success; | |
262 | status = AE_SUPPORT; | |
263 | goto out_kfree; | |
264 | } | |
265 | status = AE_ERROR; | |
266 | goto out_kfree; | |
267 | } | |
268 | out_success: | |
9dc130fc | 269 | context->ret.length = out_obj->buffer.length; |
e2cb5f08 AE |
270 | context->ret.pointer = kmemdup(out_obj->buffer.pointer, |
271 | context->ret.length, GFP_KERNEL); | |
9dc130fc SL |
272 | if (!context->ret.pointer) { |
273 | status = AE_NO_MEMORY; | |
274 | goto out_kfree; | |
275 | } | |
9dc130fc | 276 | status = AE_OK; |
70023de8 SL |
277 | |
278 | out_kfree: | |
9dc130fc SL |
279 | kfree(output.pointer); |
280 | if (status != AE_OK) | |
281 | context->ret.pointer = NULL; | |
70023de8 SL |
282 | return status; |
283 | } | |
284 | EXPORT_SYMBOL(acpi_run_osc); | |
285 | ||
eccddd32 | 286 | bool osc_sb_apei_support_acked; |
3563ff96 SL |
287 | static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48"; |
288 | static void acpi_bus_osc_support(void) | |
289 | { | |
290 | u32 capbuf[2]; | |
291 | struct acpi_osc_context context = { | |
292 | .uuid_str = sb_uuid_str, | |
293 | .rev = 1, | |
294 | .cap.length = 8, | |
295 | .cap.pointer = capbuf, | |
296 | }; | |
297 | acpi_handle handle; | |
298 | ||
b938a229 BH |
299 | capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE; |
300 | capbuf[OSC_SUPPORT_DWORD] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */ | |
6a4e2b75 ZY |
301 | #if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\ |
302 | defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE) | |
b938a229 | 303 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT; |
3563ff96 | 304 | #endif |
6a4e2b75 ZY |
305 | |
306 | #if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE) | |
b938a229 | 307 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT; |
6a4e2b75 | 308 | #endif |
eccddd32 | 309 | |
c2f4191a | 310 | #ifdef ACPI_HOTPLUG_OST |
b938a229 | 311 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; |
c2f4191a TK |
312 | #endif |
313 | ||
eccddd32 | 314 | if (!ghes_disable) |
b938a229 | 315 | capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; |
3563ff96 SL |
316 | if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) |
317 | return; | |
eccddd32 HY |
318 | if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) { |
319 | u32 *capbuf_ret = context.ret.pointer; | |
b938a229 | 320 | if (context.ret.length > OSC_SUPPORT_DWORD) |
eccddd32 | 321 | osc_sb_apei_support_acked = |
b938a229 | 322 | capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT; |
3563ff96 | 323 | kfree(context.ret.pointer); |
eccddd32 HY |
324 | } |
325 | /* do we need to check other returned cap? Sounds no */ | |
3563ff96 SL |
326 | } |
327 | ||
1da177e4 LT |
328 | /* -------------------------------------------------------------------------- |
329 | Notification Handling | |
330 | -------------------------------------------------------------------------- */ | |
331 | ||
ff754e2e | 332 | static void acpi_bus_check_device(acpi_handle handle) |
1da177e4 | 333 | { |
ff754e2e | 334 | struct acpi_device *device; |
cdd5b8ca | 335 | acpi_status status; |
1da177e4 LT |
336 | struct acpi_device_status old_status; |
337 | ||
ff754e2e BH |
338 | if (acpi_bus_get_device(handle, &device)) |
339 | return; | |
1da177e4 | 340 | if (!device) |
cdd5b8ca | 341 | return; |
1da177e4 | 342 | |
1da177e4 LT |
343 | old_status = device->status; |
344 | ||
345 | /* | |
346 | * Make sure this device's parent is present before we go about | |
347 | * messing with the device. | |
348 | */ | |
349 | if (device->parent && !device->parent->status.present) { | |
350 | device->status = device->parent->status; | |
cdd5b8ca | 351 | return; |
1da177e4 LT |
352 | } |
353 | ||
354 | status = acpi_bus_get_status(device); | |
355 | if (ACPI_FAILURE(status)) | |
cdd5b8ca | 356 | return; |
1da177e4 LT |
357 | |
358 | if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status)) | |
cdd5b8ca | 359 | return; |
1da177e4 | 360 | |
1da177e4 LT |
361 | /* |
362 | * Device Insertion/Removal | |
363 | */ | |
364 | if ((device->status.present) && !(old_status.present)) { | |
365 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device insertion detected\n")); | |
366 | /* TBD: Handle device insertion */ | |
4be44fcd | 367 | } else if (!(device->status.present) && (old_status.present)) { |
1da177e4 LT |
368 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n")); |
369 | /* TBD: Handle device removal */ | |
370 | } | |
1da177e4 LT |
371 | } |
372 | ||
ff754e2e | 373 | static void acpi_bus_check_scope(acpi_handle handle) |
1da177e4 | 374 | { |
1da177e4 | 375 | /* Status Change? */ |
ff754e2e | 376 | acpi_bus_check_device(handle); |
1da177e4 | 377 | |
1da177e4 LT |
378 | /* |
379 | * TBD: Enumerate child devices within this device's scope and | |
380 | * run acpi_bus_check_device()'s on them. | |
381 | */ | |
1da177e4 LT |
382 | } |
383 | ||
1da177e4 LT |
384 | /** |
385 | * acpi_bus_notify | |
386 | * --------------- | |
387 | * Callback for all 'system-level' device notifications (values 0x00-0x7F). | |
388 | */ | |
4be44fcd | 389 | static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) |
1da177e4 | 390 | { |
4be44fcd | 391 | struct acpi_device *device = NULL; |
6d278131 | 392 | struct acpi_driver *driver; |
1da177e4 | 393 | |
02c37bd8 BH |
394 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n", |
395 | type, handle)); | |
396 | ||
1da177e4 LT |
397 | switch (type) { |
398 | ||
399 | case ACPI_NOTIFY_BUS_CHECK: | |
ff754e2e | 400 | acpi_bus_check_scope(handle); |
aafbcd16 | 401 | /* |
1da177e4 | 402 | * TBD: We'll need to outsource certain events to non-ACPI |
4be44fcd | 403 | * drivers via the device manager (device.c). |
1da177e4 LT |
404 | */ |
405 | break; | |
406 | ||
407 | case ACPI_NOTIFY_DEVICE_CHECK: | |
ff754e2e | 408 | acpi_bus_check_device(handle); |
aafbcd16 | 409 | /* |
1da177e4 | 410 | * TBD: We'll need to outsource certain events to non-ACPI |
4be44fcd | 411 | * drivers via the device manager (device.c). |
1da177e4 LT |
412 | */ |
413 | break; | |
414 | ||
415 | case ACPI_NOTIFY_DEVICE_WAKE: | |
1da177e4 LT |
416 | /* TBD */ |
417 | break; | |
418 | ||
419 | case ACPI_NOTIFY_EJECT_REQUEST: | |
1da177e4 LT |
420 | /* TBD */ |
421 | break; | |
422 | ||
423 | case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: | |
1da177e4 LT |
424 | /* TBD: Exactly what does 'light' mean? */ |
425 | break; | |
426 | ||
427 | case ACPI_NOTIFY_FREQUENCY_MISMATCH: | |
1da177e4 LT |
428 | /* TBD */ |
429 | break; | |
430 | ||
431 | case ACPI_NOTIFY_BUS_MODE_MISMATCH: | |
1da177e4 LT |
432 | /* TBD */ |
433 | break; | |
434 | ||
435 | case ACPI_NOTIFY_POWER_FAULT: | |
1da177e4 LT |
436 | /* TBD */ |
437 | break; | |
438 | ||
439 | default: | |
4be44fcd LB |
440 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
441 | "Received unknown/unsupported notification [%08x]\n", | |
442 | type)); | |
1da177e4 LT |
443 | break; |
444 | } | |
445 | ||
ff754e2e BH |
446 | acpi_bus_get_device(handle, &device); |
447 | if (device) { | |
448 | driver = device->driver; | |
449 | if (driver && driver->ops.notify && | |
450 | (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) | |
451 | driver->ops.notify(device, type); | |
452 | } | |
1da177e4 LT |
453 | } |
454 | ||
455 | /* -------------------------------------------------------------------------- | |
456 | Initialization/Cleanup | |
457 | -------------------------------------------------------------------------- */ | |
458 | ||
4be44fcd | 459 | static int __init acpi_bus_init_irq(void) |
1da177e4 | 460 | { |
6a8c0af6 | 461 | acpi_status status; |
4be44fcd | 462 | char *message = NULL; |
1da177e4 | 463 | |
1da177e4 | 464 | |
aafbcd16 | 465 | /* |
1da177e4 LT |
466 | * Let the system know what interrupt model we are using by |
467 | * evaluating the \_PIC object, if exists. | |
468 | */ | |
469 | ||
470 | switch (acpi_irq_model) { | |
471 | case ACPI_IRQ_MODEL_PIC: | |
472 | message = "PIC"; | |
473 | break; | |
474 | case ACPI_IRQ_MODEL_IOAPIC: | |
475 | message = "IOAPIC"; | |
476 | break; | |
477 | case ACPI_IRQ_MODEL_IOSAPIC: | |
478 | message = "IOSAPIC"; | |
479 | break; | |
3948ec94 JK |
480 | case ACPI_IRQ_MODEL_PLATFORM: |
481 | message = "platform specific model"; | |
482 | break; | |
1da177e4 LT |
483 | default: |
484 | printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n"); | |
d550d98d | 485 | return -ENODEV; |
1da177e4 LT |
486 | } |
487 | ||
488 | printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message); | |
489 | ||
0db98202 | 490 | status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model); |
1da177e4 | 491 | if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) { |
a6fc6720 | 492 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC")); |
d550d98d | 493 | return -ENODEV; |
1da177e4 LT |
494 | } |
495 | ||
d550d98d | 496 | return 0; |
1da177e4 LT |
497 | } |
498 | ||
67a119f9 | 499 | u8 acpi_gbl_permanent_mmap; |
ad71860a AS |
500 | |
501 | ||
4be44fcd | 502 | void __init acpi_early_init(void) |
1da177e4 | 503 | { |
6a8c0af6 | 504 | acpi_status status; |
1da177e4 LT |
505 | |
506 | if (acpi_disabled) | |
d550d98d | 507 | return; |
1da177e4 | 508 | |
61686124 BM |
509 | printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION); |
510 | ||
1da177e4 LT |
511 | /* enable workarounds, unless strict ACPI spec. compliance */ |
512 | if (!acpi_strict) | |
513 | acpi_gbl_enable_interpreter_slack = TRUE; | |
514 | ||
ad71860a AS |
515 | acpi_gbl_permanent_mmap = 1; |
516 | ||
aa2110cb LM |
517 | /* |
518 | * If the machine falls into the DMI check table, | |
519 | * DSDT will be copied to memory | |
520 | */ | |
521 | dmi_check_system(dsdt_dmi_table); | |
522 | ||
ad71860a AS |
523 | status = acpi_reallocate_root_table(); |
524 | if (ACPI_FAILURE(status)) { | |
525 | printk(KERN_ERR PREFIX | |
526 | "Unable to reallocate ACPI tables\n"); | |
527 | goto error0; | |
528 | } | |
529 | ||
1da177e4 LT |
530 | status = acpi_initialize_subsystem(); |
531 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
532 | printk(KERN_ERR PREFIX |
533 | "Unable to initialize the ACPI Interpreter\n"); | |
1da177e4 LT |
534 | goto error0; |
535 | } | |
536 | ||
537 | status = acpi_load_tables(); | |
538 | if (ACPI_FAILURE(status)) { | |
4be44fcd LB |
539 | printk(KERN_ERR PREFIX |
540 | "Unable to load the System Description Tables\n"); | |
1da177e4 LT |
541 | goto error0; |
542 | } | |
543 | ||
1da177e4 LT |
544 | #ifdef CONFIG_X86 |
545 | if (!acpi_ioapic) { | |
1da177e4 | 546 | /* compatible (0) means level (3) */ |
5f3b1a8b AS |
547 | if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) { |
548 | acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK; | |
549 | acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL; | |
550 | } | |
1da177e4 | 551 | /* Set PIC-mode SCI trigger type */ |
cee324b1 | 552 | acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt, |
5f3b1a8b | 553 | (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2); |
1da177e4 | 554 | } else { |
1da177e4 | 555 | /* |
cee324b1 | 556 | * now that acpi_gbl_FADT is initialized, |
1da177e4 LT |
557 | * update it with result from INT_SRC_OVR parsing |
558 | */ | |
cee324b1 | 559 | acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi; |
1da177e4 LT |
560 | } |
561 | #endif | |
562 | ||
4505a201 | 563 | status = acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE); |
1da177e4 LT |
564 | if (ACPI_FAILURE(status)) { |
565 | printk(KERN_ERR PREFIX "Unable to enable ACPI\n"); | |
566 | goto error0; | |
567 | } | |
568 | ||
d550d98d | 569 | return; |
1da177e4 | 570 | |
4be44fcd | 571 | error0: |
1da177e4 | 572 | disable_acpi(); |
d550d98d | 573 | return; |
1da177e4 LT |
574 | } |
575 | ||
4be44fcd | 576 | static int __init acpi_bus_init(void) |
1da177e4 | 577 | { |
6a8c0af6 BH |
578 | int result; |
579 | acpi_status status; | |
1da177e4 | 580 | |
176f9c18 | 581 | acpi_os_initialize1(); |
1da177e4 | 582 | |
4505a201 | 583 | status = acpi_enable_subsystem(ACPI_NO_ACPI_ENABLE); |
1da177e4 | 584 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
585 | printk(KERN_ERR PREFIX |
586 | "Unable to start the ACPI Interpreter\n"); | |
1da177e4 LT |
587 | goto error1; |
588 | } | |
589 | ||
1da177e4 LT |
590 | /* |
591 | * ACPI 2.0 requires the EC driver to be loaded and work before | |
592 | * the EC device is found in the namespace (i.e. before acpi_initialize_objects() | |
593 | * is called). | |
594 | * | |
aafbcd16 | 595 | * This is accomplished by looking for the ECDT table, and getting |
1da177e4 LT |
596 | * the EC parameters out of that. |
597 | */ | |
598 | status = acpi_ec_ecdt_probe(); | |
599 | /* Ignore result. Not having an ECDT is not fatal. */ | |
1da177e4 LT |
600 | |
601 | status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION); | |
602 | if (ACPI_FAILURE(status)) { | |
603 | printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n"); | |
604 | goto error1; | |
605 | } | |
606 | ||
fc54ab72 LM |
607 | /* |
608 | * _OSC method may exist in module level code, | |
609 | * so it must be run after ACPI_FULL_INITIALIZATION | |
610 | */ | |
611 | acpi_bus_osc_support(); | |
612 | ||
b1d248d9 ZR |
613 | /* |
614 | * _PDC control method may load dynamic SSDT tables, | |
615 | * and we need to install the table handler before that. | |
616 | */ | |
617 | acpi_sysfs_init(); | |
618 | ||
78f16996 AC |
619 | acpi_early_processor_set_pdc(); |
620 | ||
455c8793 ZY |
621 | /* |
622 | * Maybe EC region is required at bus_scan/acpi_get_devices. So it | |
623 | * is necessary to enable it as early as possible. | |
624 | */ | |
625 | acpi_boot_ec_enable(); | |
626 | ||
1da177e4 LT |
627 | printk(KERN_INFO PREFIX "Interpreter enabled\n"); |
628 | ||
aafbcd16 AS |
629 | /* Initialize sleep structures */ |
630 | acpi_sleep_init(); | |
631 | ||
1da177e4 LT |
632 | /* |
633 | * Get the system interrupt model and evaluate \_PIC. | |
634 | */ | |
635 | result = acpi_bus_init_irq(); | |
636 | if (result) | |
637 | goto error1; | |
638 | ||
639 | /* | |
640 | * Register the for all standard device notifications. | |
641 | */ | |
4be44fcd LB |
642 | status = |
643 | acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY, | |
644 | &acpi_bus_notify, NULL); | |
1da177e4 | 645 | if (ACPI_FAILURE(status)) { |
4be44fcd LB |
646 | printk(KERN_ERR PREFIX |
647 | "Unable to register for device notifications\n"); | |
1da177e4 LT |
648 | goto error1; |
649 | } | |
650 | ||
651 | /* | |
652 | * Create the top ACPI proc directory | |
653 | */ | |
654 | acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL); | |
655 | ||
d550d98d | 656 | return 0; |
1da177e4 LT |
657 | |
658 | /* Mimic structured exception handling */ | |
4be44fcd | 659 | error1: |
1da177e4 | 660 | acpi_terminate(); |
d550d98d | 661 | return -ENODEV; |
1da177e4 LT |
662 | } |
663 | ||
99e0d2fc | 664 | struct kobject *acpi_kobj; |
f2d4753f | 665 | EXPORT_SYMBOL_GPL(acpi_kobj); |
1da177e4 | 666 | |
4be44fcd | 667 | static int __init acpi_init(void) |
1da177e4 | 668 | { |
6831c6ed | 669 | int result; |
1da177e4 | 670 | |
1da177e4 LT |
671 | if (acpi_disabled) { |
672 | printk(KERN_INFO PREFIX "Interpreter disabled.\n"); | |
d550d98d | 673 | return -ENODEV; |
1da177e4 LT |
674 | } |
675 | ||
f62ed9e3 | 676 | acpi_kobj = kobject_create_and_add("acpi", firmware_kobj); |
99e0d2fc | 677 | if (!acpi_kobj) { |
96b2dd1f | 678 | printk(KERN_WARNING "%s: kset create error\n", __func__); |
99e0d2fc GKH |
679 | acpi_kobj = NULL; |
680 | } | |
1da177e4 | 681 | |
0e46517d | 682 | init_acpi_device_notify(); |
1da177e4 | 683 | result = acpi_bus_init(); |
6831c6ed | 684 | if (result) { |
1da177e4 | 685 | disable_acpi(); |
81d0273d | 686 | return result; |
6831c6ed | 687 | } |
81d0273d | 688 | |
6831c6ed | 689 | pci_mmcfg_late_init(); |
e747f274 | 690 | acpi_scan_init(); |
a5f820fe | 691 | acpi_ec_init(); |
a25ee920 | 692 | acpi_debugfs_init(); |
9cee43e0 | 693 | acpi_sleep_proc_init(); |
201b8c65 | 694 | acpi_wakeup_device_init(); |
6831c6ed | 695 | return 0; |
1da177e4 LT |
696 | } |
697 | ||
698 | subsys_initcall(acpi_init); |