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25#include <linux/module.h>
26#include <linux/init.h>
27#include <linux/ioport.h>
28#include <linux/kernel.h>
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>
34#include <linux/acpi.h>
35#include <linux/slab.h>
36#ifdef CONFIG_X86
37#include <asm/mpspec.h>
38#endif
39#include <linux/pci.h>
40#include <acpi/acpi_bus.h>
41#include <acpi/acpi_drivers.h>
42#include <linux/dmi.h>
43
44#include "internal.h"
45
46#define _COMPONENT ACPI_BUS_COMPONENT
47ACPI_MODULE_NAME("bus");
48
49struct acpi_device *acpi_root;
50struct proc_dir_entry *acpi_root_dir;
51EXPORT_SYMBOL(acpi_root_dir);
52
53#define STRUCT_TO_INT(s) (*((int*)&s))
54
55
56#ifdef CONFIG_X86
57static int set_copy_dsdt(const struct dmi_system_id *id)
58{
59 printk(KERN_NOTICE "%s detected - "
60 "force copy of DSDT to local memory\n", id->ident);
61 acpi_gbl_copy_dsdt_locally = 1;
62 return 0;
63}
64
65static struct dmi_system_id dsdt_dmi_table[] __initdata = {
66
67
68
69
70 {
71 .callback = set_copy_dsdt,
72 .ident = "TOSHIBA Satellite",
73 .matches = {
74 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
75 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
76 },
77 },
78 {}
79};
80#else
81static struct dmi_system_id dsdt_dmi_table[] __initdata = {
82 {}
83};
84#endif
85
86
87
88
89
90int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
91{
92 acpi_status status = AE_OK;
93
94
95 if (!device)
96 return -EINVAL;
97
98
99
100 status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device);
101 if (ACPI_FAILURE(status) || !*device) {
102 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
103 handle));
104 return -ENODEV;
105 }
106
107 return 0;
108}
109
110EXPORT_SYMBOL(acpi_bus_get_device);
111
112acpi_status acpi_bus_get_status_handle(acpi_handle handle,
113 unsigned long long *sta)
114{
115 acpi_status status;
116
117 status = acpi_evaluate_integer(handle, "_STA", NULL, sta);
118 if (ACPI_SUCCESS(status))
119 return AE_OK;
120
121 if (status == AE_NOT_FOUND) {
122 *sta = ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED |
123 ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING;
124 return AE_OK;
125 }
126 return status;
127}
128
129int acpi_bus_get_status(struct acpi_device *device)
130{
131 acpi_status status;
132 unsigned long long sta;
133
134 status = acpi_bus_get_status_handle(device->handle, &sta);
135 if (ACPI_FAILURE(status))
136 return -ENODEV;
137
138 STRUCT_TO_INT(device->status) = (int) sta;
139
140 if (device->status.functional && !device->status.present) {
141 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: "
142 "functional but not present;\n",
143 device->pnp.bus_id,
144 (u32) STRUCT_TO_INT(device->status)));
145 }
146
147 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n",
148 device->pnp.bus_id,
149 (u32) STRUCT_TO_INT(device->status)));
150 return 0;
151}
152EXPORT_SYMBOL(acpi_bus_get_status);
153
154void acpi_bus_private_data_handler(acpi_handle handle,
155 void *context)
156{
157 return;
158}
159EXPORT_SYMBOL(acpi_bus_private_data_handler);
160
161int acpi_bus_get_private_data(acpi_handle handle, void **data)
162{
163 acpi_status status = AE_OK;
164
165 if (!*data)
166 return -EINVAL;
167
168 status = acpi_get_data(handle, acpi_bus_private_data_handler, data);
169 if (ACPI_FAILURE(status) || !*data) {
170 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
171 handle));
172 return -ENODEV;
173 }
174
175 return 0;
176}
177EXPORT_SYMBOL(acpi_bus_get_private_data);
178
179
180
181
182
183static int __acpi_bus_get_power(struct acpi_device *device, int *state)
184{
185 int result = 0;
186 acpi_status status = 0;
187 unsigned long long psc = 0;
188
189 if (!device || !state)
190 return -EINVAL;
191
192 *state = ACPI_STATE_UNKNOWN;
193
194 if (device->flags.power_manageable) {
195
196
197
198
199 if (device->power.flags.power_resources) {
200 result = acpi_power_get_inferred_state(device, state);
201 if (result)
202 return result;
203 } else if (device->power.flags.explicit_get) {
204 status = acpi_evaluate_integer(device->handle, "_PSC",
205 NULL, &psc);
206 if (ACPI_FAILURE(status))
207 return -ENODEV;
208 *state = (int)psc;
209 }
210 } else {
211
212 *state = device->parent ?
213 device->parent->power.state : ACPI_STATE_D0;
214 }
215
216 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is D%d\n",
217 device->pnp.bus_id, *state));
218
219 return 0;
220}
221
222
223static int __acpi_bus_set_power(struct acpi_device *device, int state)
224{
225 int result = 0;
226 acpi_status status = AE_OK;
227 char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' };
228
229 if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
230 return -EINVAL;
231
232
233
234 if (state == device->power.state) {
235 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
236 state));
237 return 0;
238 }
239
240 if (!device->power.states[state].flags.valid) {
241 printk(KERN_WARNING PREFIX "Device does not support D%d\n", state);
242 return -ENODEV;
243 }
244 if (device->parent && (state < device->parent->power.state)) {
245 printk(KERN_WARNING PREFIX
246 "Cannot set device to a higher-powered"
247 " state than parent\n");
248 return -ENODEV;
249 }
250
251
252
253
254
255
256
257
258 if (state < device->power.state) {
259 if (device->power.flags.power_resources) {
260 result = acpi_power_transition(device, state);
261 if (result)
262 goto end;
263 }
264 if (device->power.states[state].flags.explicit_set) {
265 status = acpi_evaluate_object(device->handle,
266 object_name, NULL, NULL);
267 if (ACPI_FAILURE(status)) {
268 result = -ENODEV;
269 goto end;
270 }
271 }
272 } else {
273 if (device->power.states[state].flags.explicit_set) {
274 status = acpi_evaluate_object(device->handle,
275 object_name, NULL, NULL);
276 if (ACPI_FAILURE(status)) {
277 result = -ENODEV;
278 goto end;
279 }
280 }
281 if (device->power.flags.power_resources) {
282 result = acpi_power_transition(device, state);
283 if (result)
284 goto end;
285 }
286 }
287
288 end:
289 if (result)
290 printk(KERN_WARNING PREFIX
291 "Device [%s] failed to transition to D%d\n",
292 device->pnp.bus_id, state);
293 else {
294 device->power.state = state;
295 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
296 "Device [%s] transitioned to D%d\n",
297 device->pnp.bus_id, state));
298 }
299
300 return result;
301}
302
303
304int acpi_bus_set_power(acpi_handle handle, int state)
305{
306 struct acpi_device *device;
307 int result;
308
309 result = acpi_bus_get_device(handle, &device);
310 if (result)
311 return result;
312
313 if (!device->flags.power_manageable) {
314 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
315 "Device [%s] is not power manageable\n",
316 dev_name(&device->dev)));
317 return -ENODEV;
318 }
319
320 return __acpi_bus_set_power(device, state);
321}
322EXPORT_SYMBOL(acpi_bus_set_power);
323
324
325int acpi_bus_init_power(struct acpi_device *device)
326{
327 int state;
328 int result;
329
330 if (!device)
331 return -EINVAL;
332
333 device->power.state = ACPI_STATE_UNKNOWN;
334
335 result = __acpi_bus_get_power(device, &state);
336 if (result)
337 return result;
338
339 if (device->power.flags.power_resources)
340 result = acpi_power_on_resources(device, state);
341
342 if (!result)
343 device->power.state = state;
344
345 return result;
346}
347
348
349int acpi_bus_update_power(acpi_handle handle, int *state_p)
350{
351 struct acpi_device *device;
352 int state;
353 int result;
354
355 result = acpi_bus_get_device(handle, &device);
356 if (result)
357 return result;
358
359 result = __acpi_bus_get_power(device, &state);
360 if (result)
361 return result;
362
363 result = __acpi_bus_set_power(device, state);
364 if (!result && state_p)
365 *state_p = state;
366
367 return result;
368}
369EXPORT_SYMBOL_GPL(acpi_bus_update_power);
370
371
372bool acpi_bus_power_manageable(acpi_handle handle)
373{
374 struct acpi_device *device;
375 int result;
376
377 result = acpi_bus_get_device(handle, &device);
378 return result ? false : device->flags.power_manageable;
379}
380
381EXPORT_SYMBOL(acpi_bus_power_manageable);
382
383bool acpi_bus_can_wakeup(acpi_handle handle)
384{
385 struct acpi_device *device;
386 int result;
387
388 result = acpi_bus_get_device(handle, &device);
389 return result ? false : device->wakeup.flags.valid;
390}
391
392EXPORT_SYMBOL(acpi_bus_can_wakeup);
393
394static void acpi_print_osc_error(acpi_handle handle,
395 struct acpi_osc_context *context, char *error)
396{
397 struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER};
398 int i;
399
400 if (ACPI_FAILURE(acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer)))
401 printk(KERN_DEBUG "%s\n", error);
402 else {
403 printk(KERN_DEBUG "%s:%s\n", (char *)buffer.pointer, error);
404 kfree(buffer.pointer);
405 }
406 printk(KERN_DEBUG"_OSC request data:");
407 for (i = 0; i < context->cap.length; i += sizeof(u32))
408 printk("%x ", *((u32 *)(context->cap.pointer + i)));
409 printk("\n");
410}
411
412static acpi_status acpi_str_to_uuid(char *str, u8 *uuid)
413{
414 int i;
415 static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21,
416 24, 26, 28, 30, 32, 34};
417
418 if (strlen(str) != 36)
419 return AE_BAD_PARAMETER;
420 for (i = 0; i < 36; i++) {
421 if (i == 8 || i == 13 || i == 18 || i == 23) {
422 if (str[i] != '-')
423 return AE_BAD_PARAMETER;
424 } else if (!isxdigit(str[i]))
425 return AE_BAD_PARAMETER;
426 }
427 for (i = 0; i < 16; i++) {
428 uuid[i] = hex_to_bin(str[opc_map_to_uuid[i]]) << 4;
429 uuid[i] |= hex_to_bin(str[opc_map_to_uuid[i] + 1]);
430 }
431 return AE_OK;
432}
433
434acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context)
435{
436 acpi_status status;
437 struct acpi_object_list input;
438 union acpi_object in_params[4];
439 union acpi_object *out_obj;
440 u8 uuid[16];
441 u32 errors;
442 struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
443
444 if (!context)
445 return AE_ERROR;
446 if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid)))
447 return AE_ERROR;
448 context->ret.length = ACPI_ALLOCATE_BUFFER;
449 context->ret.pointer = NULL;
450
451
452 input.count = 4;
453 input.pointer = in_params;
454 in_params[0].type = ACPI_TYPE_BUFFER;
455 in_params[0].buffer.length = 16;
456 in_params[0].buffer.pointer = uuid;
457 in_params[1].type = ACPI_TYPE_INTEGER;
458 in_params[1].integer.value = context->rev;
459 in_params[2].type = ACPI_TYPE_INTEGER;
460 in_params[2].integer.value = context->cap.length/sizeof(u32);
461 in_params[3].type = ACPI_TYPE_BUFFER;
462 in_params[3].buffer.length = context->cap.length;
463 in_params[3].buffer.pointer = context->cap.pointer;
464
465 status = acpi_evaluate_object(handle, "_OSC", &input, &output);
466 if (ACPI_FAILURE(status))
467 return status;
468
469 if (!output.length)
470 return AE_NULL_OBJECT;
471
472 out_obj = output.pointer;
473 if (out_obj->type != ACPI_TYPE_BUFFER
474 || out_obj->buffer.length != context->cap.length) {
475 acpi_print_osc_error(handle, context,
476 "_OSC evaluation returned wrong type");
477 status = AE_TYPE;
478 goto out_kfree;
479 }
480
481 errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0);
482 if (errors) {
483 if (errors & OSC_REQUEST_ERROR)
484 acpi_print_osc_error(handle, context,
485 "_OSC request failed");
486 if (errors & OSC_INVALID_UUID_ERROR)
487 acpi_print_osc_error(handle, context,
488 "_OSC invalid UUID");
489 if (errors & OSC_INVALID_REVISION_ERROR)
490 acpi_print_osc_error(handle, context,
491 "_OSC invalid revision");
492 if (errors & OSC_CAPABILITIES_MASK_ERROR) {
493 if (((u32 *)context->cap.pointer)[OSC_QUERY_TYPE]
494 & OSC_QUERY_ENABLE)
495 goto out_success;
496 status = AE_SUPPORT;
497 goto out_kfree;
498 }
499 status = AE_ERROR;
500 goto out_kfree;
501 }
502out_success:
503 context->ret.length = out_obj->buffer.length;
504 context->ret.pointer = kmalloc(context->ret.length, GFP_KERNEL);
505 if (!context->ret.pointer) {
506 status = AE_NO_MEMORY;
507 goto out_kfree;
508 }
509 memcpy(context->ret.pointer, out_obj->buffer.pointer,
510 context->ret.length);
511 status = AE_OK;
512
513out_kfree:
514 kfree(output.pointer);
515 if (status != AE_OK)
516 context->ret.pointer = NULL;
517 return status;
518}
519EXPORT_SYMBOL(acpi_run_osc);
520
521static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48";
522static void acpi_bus_osc_support(void)
523{
524 u32 capbuf[2];
525 struct acpi_osc_context context = {
526 .uuid_str = sb_uuid_str,
527 .rev = 1,
528 .cap.length = 8,
529 .cap.pointer = capbuf,
530 };
531 acpi_handle handle;
532
533 capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
534 capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT;
535#if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\
536 defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE)
537 capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT;
538#endif
539
540#if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE)
541 capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT;
542#endif
543 if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
544 return;
545 if (ACPI_SUCCESS(acpi_run_osc(handle, &context)))
546 kfree(context.ret.pointer);
547
548}
549
550
551
552
553
554#ifdef CONFIG_ACPI_PROC_EVENT
555static DEFINE_SPINLOCK(acpi_bus_event_lock);
556
557LIST_HEAD(acpi_bus_event_list);
558DECLARE_WAIT_QUEUE_HEAD(acpi_bus_event_queue);
559
560extern int event_is_open;
561
562int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id, u8 type, int data)
563{
564 struct acpi_bus_event *event;
565 unsigned long flags = 0;
566
567
568 if (!event_is_open)
569 return 0;
570
571 event = kzalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
572 if (!event)
573 return -ENOMEM;
574
575 strcpy(event->device_class, device_class);
576 strcpy(event->bus_id, bus_id);
577 event->type = type;
578 event->data = data;
579
580 spin_lock_irqsave(&acpi_bus_event_lock, flags);
581 list_add_tail(&event->node, &acpi_bus_event_list);
582 spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
583
584 wake_up_interruptible(&acpi_bus_event_queue);
585
586 return 0;
587
588}
589
590EXPORT_SYMBOL_GPL(acpi_bus_generate_proc_event4);
591
592int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
593{
594 if (!device)
595 return -EINVAL;
596 return acpi_bus_generate_proc_event4(device->pnp.device_class,
597 device->pnp.bus_id, type, data);
598}
599
600EXPORT_SYMBOL(acpi_bus_generate_proc_event);
601
602int acpi_bus_receive_event(struct acpi_bus_event *event)
603{
604 unsigned long flags = 0;
605 struct acpi_bus_event *entry = NULL;
606
607 DECLARE_WAITQUEUE(wait, current);
608
609
610 if (!event)
611 return -EINVAL;
612
613 if (list_empty(&acpi_bus_event_list)) {
614
615 set_current_state(TASK_INTERRUPTIBLE);
616 add_wait_queue(&acpi_bus_event_queue, &wait);
617
618 if (list_empty(&acpi_bus_event_list))
619 schedule();
620
621 remove_wait_queue(&acpi_bus_event_queue, &wait);
622 set_current_state(TASK_RUNNING);
623
624 if (signal_pending(current))
625 return -ERESTARTSYS;
626 }
627
628 spin_lock_irqsave(&acpi_bus_event_lock, flags);
629 if (!list_empty(&acpi_bus_event_list)) {
630 entry = list_entry(acpi_bus_event_list.next,
631 struct acpi_bus_event, node);
632 list_del(&entry->node);
633 }
634 spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
635
636 if (!entry)
637 return -ENODEV;
638
639 memcpy(event, entry, sizeof(struct acpi_bus_event));
640
641 kfree(entry);
642
643 return 0;
644}
645
646#endif
647
648
649
650
651
652static void acpi_bus_check_device(acpi_handle handle)
653{
654 struct acpi_device *device;
655 acpi_status status;
656 struct acpi_device_status old_status;
657
658 if (acpi_bus_get_device(handle, &device))
659 return;
660 if (!device)
661 return;
662
663 old_status = device->status;
664
665
666
667
668
669 if (device->parent && !device->parent->status.present) {
670 device->status = device->parent->status;
671 return;
672 }
673
674 status = acpi_bus_get_status(device);
675 if (ACPI_FAILURE(status))
676 return;
677
678 if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
679 return;
680
681
682
683
684 if ((device->status.present) && !(old_status.present)) {
685 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device insertion detected\n"));
686
687 } else if (!(device->status.present) && (old_status.present)) {
688 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n"));
689
690 }
691}
692
693static void acpi_bus_check_scope(acpi_handle handle)
694{
695
696 acpi_bus_check_device(handle);
697
698
699
700
701
702}
703
704static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list);
705int register_acpi_bus_notifier(struct notifier_block *nb)
706{
707 return blocking_notifier_chain_register(&acpi_bus_notify_list, nb);
708}
709EXPORT_SYMBOL_GPL(register_acpi_bus_notifier);
710
711void unregister_acpi_bus_notifier(struct notifier_block *nb)
712{
713 blocking_notifier_chain_unregister(&acpi_bus_notify_list, nb);
714}
715EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier);
716
717
718
719
720
721
722static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
723{
724 struct acpi_device *device = NULL;
725 struct acpi_driver *driver;
726
727 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n",
728 type, handle));
729
730 blocking_notifier_call_chain(&acpi_bus_notify_list,
731 type, (void *)handle);
732
733 switch (type) {
734
735 case ACPI_NOTIFY_BUS_CHECK:
736 acpi_bus_check_scope(handle);
737
738
739
740
741 break;
742
743 case ACPI_NOTIFY_DEVICE_CHECK:
744 acpi_bus_check_device(handle);
745
746
747
748
749 break;
750
751 case ACPI_NOTIFY_DEVICE_WAKE:
752
753 break;
754
755 case ACPI_NOTIFY_EJECT_REQUEST:
756
757 break;
758
759 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
760
761 break;
762
763 case ACPI_NOTIFY_FREQUENCY_MISMATCH:
764
765 break;
766
767 case ACPI_NOTIFY_BUS_MODE_MISMATCH:
768
769 break;
770
771 case ACPI_NOTIFY_POWER_FAULT:
772
773 break;
774
775 default:
776 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
777 "Received unknown/unsupported notification [%08x]\n",
778 type));
779 break;
780 }
781
782 acpi_bus_get_device(handle, &device);
783 if (device) {
784 driver = device->driver;
785 if (driver && driver->ops.notify &&
786 (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
787 driver->ops.notify(device, type);
788 }
789}
790
791
792
793
794
795static int __init acpi_bus_init_irq(void)
796{
797 acpi_status status = AE_OK;
798 union acpi_object arg = { ACPI_TYPE_INTEGER };
799 struct acpi_object_list arg_list = { 1, &arg };
800 char *message = NULL;
801
802
803
804
805
806
807
808 switch (acpi_irq_model) {
809 case ACPI_IRQ_MODEL_PIC:
810 message = "PIC";
811 break;
812 case ACPI_IRQ_MODEL_IOAPIC:
813 message = "IOAPIC";
814 break;
815 case ACPI_IRQ_MODEL_IOSAPIC:
816 message = "IOSAPIC";
817 break;
818 case ACPI_IRQ_MODEL_PLATFORM:
819 message = "platform specific model";
820 break;
821 default:
822 printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
823 return -ENODEV;
824 }
825
826 printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
827
828 arg.integer.value = acpi_irq_model;
829
830 status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL);
831 if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
832 ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
833 return -ENODEV;
834 }
835
836 return 0;
837}
838
839u8 acpi_gbl_permanent_mmap;
840
841
842void __init acpi_early_init(void)
843{
844 acpi_status status = AE_OK;
845
846 if (acpi_disabled)
847 return;
848
849 printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
850
851
852 if (!acpi_strict)
853 acpi_gbl_enable_interpreter_slack = TRUE;
854
855 acpi_gbl_permanent_mmap = 1;
856
857
858
859
860
861 dmi_check_system(dsdt_dmi_table);
862
863 status = acpi_reallocate_root_table();
864 if (ACPI_FAILURE(status)) {
865 printk(KERN_ERR PREFIX
866 "Unable to reallocate ACPI tables\n");
867 goto error0;
868 }
869
870 status = acpi_initialize_subsystem();
871 if (ACPI_FAILURE(status)) {
872 printk(KERN_ERR PREFIX
873 "Unable to initialize the ACPI Interpreter\n");
874 goto error0;
875 }
876
877 status = acpi_load_tables();
878 if (ACPI_FAILURE(status)) {
879 printk(KERN_ERR PREFIX
880 "Unable to load the System Description Tables\n");
881 goto error0;
882 }
883
884#ifdef CONFIG_X86
885 if (!acpi_ioapic) {
886
887 if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) {
888 acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK;
889 acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL;
890 }
891
892 acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt,
893 (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2);
894 } else {
895
896
897
898
899 acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi;
900 }
901#endif
902
903 status =
904 acpi_enable_subsystem(~
905 (ACPI_NO_HARDWARE_INIT |
906 ACPI_NO_ACPI_ENABLE));
907 if (ACPI_FAILURE(status)) {
908 printk(KERN_ERR PREFIX "Unable to enable ACPI\n");
909 goto error0;
910 }
911
912 return;
913
914 error0:
915 disable_acpi();
916 return;
917}
918
919static int __init acpi_bus_init(void)
920{
921 int result = 0;
922 acpi_status status = AE_OK;
923 extern acpi_status acpi_os_initialize1(void);
924
925 acpi_os_initialize1();
926
927 status =
928 acpi_enable_subsystem(ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE);
929 if (ACPI_FAILURE(status)) {
930 printk(KERN_ERR PREFIX
931 "Unable to start the ACPI Interpreter\n");
932 goto error1;
933 }
934
935
936
937
938
939
940
941
942
943 status = acpi_ec_ecdt_probe();
944
945
946 acpi_bus_osc_support();
947
948 status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION);
949 if (ACPI_FAILURE(status)) {
950 printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n");
951 goto error1;
952 }
953
954
955
956
957
958 acpi_sysfs_init();
959
960 acpi_early_processor_set_pdc();
961
962
963
964
965
966 acpi_boot_ec_enable();
967
968 printk(KERN_INFO PREFIX "Interpreter enabled\n");
969
970
971 acpi_sleep_init();
972
973
974
975
976 result = acpi_bus_init_irq();
977 if (result)
978 goto error1;
979
980
981
982
983 status =
984 acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY,
985 &acpi_bus_notify, NULL);
986 if (ACPI_FAILURE(status)) {
987 printk(KERN_ERR PREFIX
988 "Unable to register for device notifications\n");
989 goto error1;
990 }
991
992
993
994
995 acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL);
996
997 return 0;
998
999
1000 error1:
1001 acpi_terminate();
1002 return -ENODEV;
1003}
1004
1005struct kobject *acpi_kobj;
1006
1007static int __init acpi_init(void)
1008{
1009 int result = 0;
1010
1011
1012 if (acpi_disabled) {
1013 printk(KERN_INFO PREFIX "Interpreter disabled.\n");
1014 return -ENODEV;
1015 }
1016
1017 acpi_kobj = kobject_create_and_add("acpi", firmware_kobj);
1018 if (!acpi_kobj) {
1019 printk(KERN_WARNING "%s: kset create error\n", __func__);
1020 acpi_kobj = NULL;
1021 }
1022
1023 init_acpi_device_notify();
1024 result = acpi_bus_init();
1025
1026 if (!result) {
1027 pci_mmcfg_late_init();
1028 if (!(pm_flags & PM_APM))
1029 pm_flags |= PM_ACPI;
1030 else {
1031 printk(KERN_INFO PREFIX
1032 "APM is already active, exiting\n");
1033 disable_acpi();
1034 result = -ENODEV;
1035 }
1036 } else
1037 disable_acpi();
1038
1039 if (acpi_disabled)
1040 return result;
1041
1042 acpi_scan_init();
1043 acpi_ec_init();
1044 acpi_debugfs_init();
1045 acpi_sleep_proc_init();
1046 acpi_wakeup_device_init();
1047 return result;
1048}
1049
1050subsys_initcall(acpi_init);
1051
