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21#include <linux/module.h>
22#include <linux/init.h>
23#include <linux/ioport.h>
24#include <linux/kernel.h>
25#include <linux/list.h>
26#include <linux/sched.h>
27#include <linux/pm.h>
28#include <linux/device.h>
29#include <linux/proc_fs.h>
30#include <linux/acpi.h>
31#include <linux/slab.h>
32#include <linux/regulator/machine.h>
33#ifdef CONFIG_X86
34#include <asm/mpspec.h>
35#endif
36#include <linux/pci.h>
37#include <acpi/apei.h>
38#include <linux/dmi.h>
39#include <linux/suspend.h>
40
41#include "internal.h"
42
43#define _COMPONENT ACPI_BUS_COMPONENT
44ACPI_MODULE_NAME("bus");
45
46struct acpi_device *acpi_root;
47struct proc_dir_entry *acpi_root_dir;
48EXPORT_SYMBOL(acpi_root_dir);
49
50#ifdef CONFIG_X86
51#ifdef CONFIG_ACPI_CUSTOM_DSDT
52static inline int set_copy_dsdt(const struct dmi_system_id *id)
53{
54 return 0;
55}
56#else
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#endif
65
66static struct dmi_system_id dsdt_dmi_table[] __initdata = {
67
68
69
70
71 {
72 .callback = set_copy_dsdt,
73 .ident = "TOSHIBA Satellite",
74 .matches = {
75 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
76 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
77 },
78 },
79 {}
80};
81#else
82static struct dmi_system_id dsdt_dmi_table[] __initdata = {
83 {}
84};
85#endif
86
87
88
89
90
91acpi_status acpi_bus_get_status_handle(acpi_handle handle,
92 unsigned long long *sta)
93{
94 acpi_status status;
95
96 status = acpi_evaluate_integer(handle, "_STA", NULL, sta);
97 if (ACPI_SUCCESS(status))
98 return AE_OK;
99
100 if (status == AE_NOT_FOUND) {
101 *sta = ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED |
102 ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING;
103 return AE_OK;
104 }
105 return status;
106}
107
108int acpi_bus_get_status(struct acpi_device *device)
109{
110 acpi_status status;
111 unsigned long long sta;
112
113 status = acpi_bus_get_status_handle(device->handle, &sta);
114 if (ACPI_FAILURE(status))
115 return -ENODEV;
116
117 acpi_set_device_status(device, sta);
118
119 if (device->status.functional && !device->status.present) {
120 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: "
121 "functional but not present;\n",
122 device->pnp.bus_id, (u32)sta));
123 }
124
125 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n",
126 device->pnp.bus_id, (u32)sta));
127 return 0;
128}
129EXPORT_SYMBOL(acpi_bus_get_status);
130
131void acpi_bus_private_data_handler(acpi_handle handle,
132 void *context)
133{
134 return;
135}
136EXPORT_SYMBOL(acpi_bus_private_data_handler);
137
138int acpi_bus_attach_private_data(acpi_handle handle, void *data)
139{
140 acpi_status status;
141
142 status = acpi_attach_data(handle,
143 acpi_bus_private_data_handler, data);
144 if (ACPI_FAILURE(status)) {
145 acpi_handle_debug(handle, "Error attaching device data\n");
146 return -ENODEV;
147 }
148
149 return 0;
150}
151EXPORT_SYMBOL_GPL(acpi_bus_attach_private_data);
152
153int acpi_bus_get_private_data(acpi_handle handle, void **data)
154{
155 acpi_status status;
156
157 if (!*data)
158 return -EINVAL;
159
160 status = acpi_get_data(handle, acpi_bus_private_data_handler, data);
161 if (ACPI_FAILURE(status)) {
162 acpi_handle_debug(handle, "No context for object\n");
163 return -ENODEV;
164 }
165
166 return 0;
167}
168EXPORT_SYMBOL_GPL(acpi_bus_get_private_data);
169
170void acpi_bus_detach_private_data(acpi_handle handle)
171{
172 acpi_detach_data(handle, acpi_bus_private_data_handler);
173}
174EXPORT_SYMBOL_GPL(acpi_bus_detach_private_data);
175
176static void acpi_print_osc_error(acpi_handle handle,
177 struct acpi_osc_context *context, char *error)
178{
179 struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER};
180 int i;
181
182 if (ACPI_FAILURE(acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer)))
183 printk(KERN_DEBUG "%s: %s\n", context->uuid_str, error);
184 else {
185 printk(KERN_DEBUG "%s (%s): %s\n",
186 (char *)buffer.pointer, context->uuid_str, error);
187 kfree(buffer.pointer);
188 }
189 printk(KERN_DEBUG "_OSC request data:");
190 for (i = 0; i < context->cap.length; i += sizeof(u32))
191 printk(" %x", *((u32 *)(context->cap.pointer + i)));
192 printk("\n");
193}
194
195acpi_status acpi_str_to_uuid(char *str, u8 *uuid)
196{
197 int i;
198 static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21,
199 24, 26, 28, 30, 32, 34};
200
201 if (strlen(str) != 36)
202 return AE_BAD_PARAMETER;
203 for (i = 0; i < 36; i++) {
204 if (i == 8 || i == 13 || i == 18 || i == 23) {
205 if (str[i] != '-')
206 return AE_BAD_PARAMETER;
207 } else if (!isxdigit(str[i]))
208 return AE_BAD_PARAMETER;
209 }
210 for (i = 0; i < 16; i++) {
211 uuid[i] = hex_to_bin(str[opc_map_to_uuid[i]]) << 4;
212 uuid[i] |= hex_to_bin(str[opc_map_to_uuid[i] + 1]);
213 }
214 return AE_OK;
215}
216EXPORT_SYMBOL_GPL(acpi_str_to_uuid);
217
218acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context)
219{
220 acpi_status status;
221 struct acpi_object_list input;
222 union acpi_object in_params[4];
223 union acpi_object *out_obj;
224 u8 uuid[16];
225 u32 errors;
226 struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
227
228 if (!context)
229 return AE_ERROR;
230 if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid)))
231 return AE_ERROR;
232 context->ret.length = ACPI_ALLOCATE_BUFFER;
233 context->ret.pointer = NULL;
234
235
236 input.count = 4;
237 input.pointer = in_params;
238 in_params[0].type = ACPI_TYPE_BUFFER;
239 in_params[0].buffer.length = 16;
240 in_params[0].buffer.pointer = uuid;
241 in_params[1].type = ACPI_TYPE_INTEGER;
242 in_params[1].integer.value = context->rev;
243 in_params[2].type = ACPI_TYPE_INTEGER;
244 in_params[2].integer.value = context->cap.length/sizeof(u32);
245 in_params[3].type = ACPI_TYPE_BUFFER;
246 in_params[3].buffer.length = context->cap.length;
247 in_params[3].buffer.pointer = context->cap.pointer;
248
249 status = acpi_evaluate_object(handle, "_OSC", &input, &output);
250 if (ACPI_FAILURE(status))
251 return status;
252
253 if (!output.length)
254 return AE_NULL_OBJECT;
255
256 out_obj = output.pointer;
257 if (out_obj->type != ACPI_TYPE_BUFFER
258 || out_obj->buffer.length != context->cap.length) {
259 acpi_print_osc_error(handle, context,
260 "_OSC evaluation returned wrong type");
261 status = AE_TYPE;
262 goto out_kfree;
263 }
264
265 errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0);
266 if (errors) {
267 if (errors & OSC_REQUEST_ERROR)
268 acpi_print_osc_error(handle, context,
269 "_OSC request failed");
270 if (errors & OSC_INVALID_UUID_ERROR)
271 acpi_print_osc_error(handle, context,
272 "_OSC invalid UUID");
273 if (errors & OSC_INVALID_REVISION_ERROR)
274 acpi_print_osc_error(handle, context,
275 "_OSC invalid revision");
276 if (errors & OSC_CAPABILITIES_MASK_ERROR) {
277 if (((u32 *)context->cap.pointer)[OSC_QUERY_DWORD]
278 & OSC_QUERY_ENABLE)
279 goto out_success;
280 status = AE_SUPPORT;
281 goto out_kfree;
282 }
283 status = AE_ERROR;
284 goto out_kfree;
285 }
286out_success:
287 context->ret.length = out_obj->buffer.length;
288 context->ret.pointer = kmemdup(out_obj->buffer.pointer,
289 context->ret.length, GFP_KERNEL);
290 if (!context->ret.pointer) {
291 status = AE_NO_MEMORY;
292 goto out_kfree;
293 }
294 status = AE_OK;
295
296out_kfree:
297 kfree(output.pointer);
298 if (status != AE_OK)
299 context->ret.pointer = NULL;
300 return status;
301}
302EXPORT_SYMBOL(acpi_run_osc);
303
304bool osc_sb_apei_support_acked;
305static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48";
306static void acpi_bus_osc_support(void)
307{
308 u32 capbuf[2];
309 struct acpi_osc_context context = {
310 .uuid_str = sb_uuid_str,
311 .rev = 1,
312 .cap.length = 8,
313 .cap.pointer = capbuf,
314 };
315 acpi_handle handle;
316
317 capbuf[OSC_QUERY_DWORD] = OSC_QUERY_ENABLE;
318 capbuf[OSC_SUPPORT_DWORD] = OSC_SB_PR3_SUPPORT;
319 if (IS_ENABLED(CONFIG_ACPI_PROCESSOR_AGGREGATOR))
320 capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PAD_SUPPORT;
321 if (IS_ENABLED(CONFIG_ACPI_PROCESSOR))
322 capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PPC_OST_SUPPORT;
323
324 capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
325
326 if (!ghes_disable)
327 capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT;
328 if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
329 return;
330 if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) {
331 u32 *capbuf_ret = context.ret.pointer;
332 if (context.ret.length > OSC_SUPPORT_DWORD)
333 osc_sb_apei_support_acked =
334 capbuf_ret[OSC_SUPPORT_DWORD] & OSC_SB_APEI_SUPPORT;
335 kfree(context.ret.pointer);
336 }
337
338}
339
340
341
342
343
344
345
346
347
348
349static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
350{
351 struct acpi_device *adev;
352 struct acpi_driver *driver;
353 u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
354 bool hotplug_event = false;
355
356 switch (type) {
357 case ACPI_NOTIFY_BUS_CHECK:
358 acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
359 hotplug_event = true;
360 break;
361
362 case ACPI_NOTIFY_DEVICE_CHECK:
363 acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
364 hotplug_event = true;
365 break;
366
367 case ACPI_NOTIFY_DEVICE_WAKE:
368 acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_WAKE event\n");
369 break;
370
371 case ACPI_NOTIFY_EJECT_REQUEST:
372 acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
373 hotplug_event = true;
374 break;
375
376 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
377 acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK_LIGHT event\n");
378
379 break;
380
381 case ACPI_NOTIFY_FREQUENCY_MISMATCH:
382 acpi_handle_err(handle, "Device cannot be configured due "
383 "to a frequency mismatch\n");
384 break;
385
386 case ACPI_NOTIFY_BUS_MODE_MISMATCH:
387 acpi_handle_err(handle, "Device cannot be configured due "
388 "to a bus mode mismatch\n");
389 break;
390
391 case ACPI_NOTIFY_POWER_FAULT:
392 acpi_handle_err(handle, "Device has suffered a power fault\n");
393 break;
394
395 default:
396 acpi_handle_debug(handle, "Unknown event type 0x%x\n", type);
397 break;
398 }
399
400 adev = acpi_bus_get_acpi_device(handle);
401 if (!adev)
402 goto err;
403
404 driver = adev->driver;
405 if (driver && driver->ops.notify &&
406 (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
407 driver->ops.notify(adev, type);
408
409 if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type)))
410 return;
411
412 acpi_bus_put_acpi_device(adev);
413 return;
414
415 err:
416 acpi_evaluate_ost(handle, type, ost_code, NULL);
417}
418
419static void acpi_device_notify(acpi_handle handle, u32 event, void *data)
420{
421 struct acpi_device *device = data;
422
423 device->driver->ops.notify(device, event);
424}
425
426static void acpi_device_notify_fixed(void *data)
427{
428 struct acpi_device *device = data;
429
430
431 acpi_device_notify(NULL, ACPI_FIXED_HARDWARE_EVENT, device);
432}
433
434static u32 acpi_device_fixed_event(void *data)
435{
436 acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_device_notify_fixed, data);
437 return ACPI_INTERRUPT_HANDLED;
438}
439
440static int acpi_device_install_notify_handler(struct acpi_device *device)
441{
442 acpi_status status;
443
444 if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON)
445 status =
446 acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
447 acpi_device_fixed_event,
448 device);
449 else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)
450 status =
451 acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
452 acpi_device_fixed_event,
453 device);
454 else
455 status = acpi_install_notify_handler(device->handle,
456 ACPI_DEVICE_NOTIFY,
457 acpi_device_notify,
458 device);
459
460 if (ACPI_FAILURE(status))
461 return -EINVAL;
462 return 0;
463}
464
465static void acpi_device_remove_notify_handler(struct acpi_device *device)
466{
467 if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON)
468 acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON,
469 acpi_device_fixed_event);
470 else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON)
471 acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON,
472 acpi_device_fixed_event);
473 else
474 acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
475 acpi_device_notify);
476}
477
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486
487
488struct device *acpi_get_first_physical_node(struct acpi_device *adev)
489{
490 struct mutex *physical_node_lock = &adev->physical_node_lock;
491 struct device *phys_dev;
492
493 mutex_lock(physical_node_lock);
494 if (list_empty(&adev->physical_node_list)) {
495 phys_dev = NULL;
496 } else {
497 const struct acpi_device_physical_node *node;
498
499 node = list_first_entry(&adev->physical_node_list,
500 struct acpi_device_physical_node, node);
501
502 phys_dev = node->dev;
503 }
504 mutex_unlock(physical_node_lock);
505 return phys_dev;
506}
507
508static struct acpi_device *acpi_primary_dev_companion(struct acpi_device *adev,
509 const struct device *dev)
510{
511 const struct device *phys_dev = acpi_get_first_physical_node(adev);
512
513 return phys_dev && phys_dev == dev ? adev : NULL;
514}
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526
527bool acpi_device_is_first_physical_node(struct acpi_device *adev,
528 const struct device *dev)
529{
530 return !!acpi_primary_dev_companion(adev, dev);
531}
532
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553
554struct acpi_device *acpi_companion_match(const struct device *dev)
555{
556 struct acpi_device *adev;
557
558 adev = ACPI_COMPANION(dev);
559 if (!adev)
560 return NULL;
561
562 if (list_empty(&adev->pnp.ids))
563 return NULL;
564
565 return acpi_primary_dev_companion(adev, dev);
566}
567
568
569
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571
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574
575
576
577static bool acpi_of_match_device(struct acpi_device *adev,
578 const struct of_device_id *of_match_table)
579{
580 const union acpi_object *of_compatible, *obj;
581 int i, nval;
582
583 if (!adev)
584 return false;
585
586 of_compatible = adev->data.of_compatible;
587 if (!of_match_table || !of_compatible)
588 return false;
589
590 if (of_compatible->type == ACPI_TYPE_PACKAGE) {
591 nval = of_compatible->package.count;
592 obj = of_compatible->package.elements;
593 } else {
594 nval = 1;
595 obj = of_compatible;
596 }
597
598 for (i = 0; i < nval; i++, obj++) {
599 const struct of_device_id *id;
600
601 for (id = of_match_table; id->compatible[0]; id++)
602 if (!strcasecmp(obj->string.pointer, id->compatible))
603 return true;
604 }
605
606 return false;
607}
608
609static bool __acpi_match_device_cls(const struct acpi_device_id *id,
610 struct acpi_hardware_id *hwid)
611{
612 int i, msk, byte_shift;
613 char buf[3];
614
615 if (!id->cls)
616 return false;
617
618
619 for (i = 1; i <= 3; i++) {
620 byte_shift = 8 * (3 - i);
621 msk = (id->cls_msk >> byte_shift) & 0xFF;
622 if (!msk)
623 continue;
624
625 sprintf(buf, "%02x", (id->cls >> byte_shift) & msk);
626 if (strncmp(buf, &hwid->id[(i - 1) * 2], 2))
627 return false;
628 }
629 return true;
630}
631
632static const struct acpi_device_id *__acpi_match_device(
633 struct acpi_device *device,
634 const struct acpi_device_id *ids,
635 const struct of_device_id *of_ids)
636{
637 const struct acpi_device_id *id;
638 struct acpi_hardware_id *hwid;
639
640
641
642
643
644 if (!device || !device->status.present)
645 return NULL;
646
647 list_for_each_entry(hwid, &device->pnp.ids, list) {
648
649 for (id = ids; id->id[0] || id->cls; id++) {
650 if (id->id[0] && !strcmp((char *) id->id, hwid->id))
651 return id;
652 else if (id->cls && __acpi_match_device_cls(id, hwid))
653 return id;
654 }
655
656
657
658
659
660
661
662
663
664 if (!strcmp(ACPI_DT_NAMESPACE_HID, hwid->id)
665 && acpi_of_match_device(device, of_ids))
666 return id;
667 }
668 return NULL;
669}
670
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680
681
682const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
683 const struct device *dev)
684{
685 return __acpi_match_device(acpi_companion_match(dev), ids, NULL);
686}
687EXPORT_SYMBOL_GPL(acpi_match_device);
688
689int acpi_match_device_ids(struct acpi_device *device,
690 const struct acpi_device_id *ids)
691{
692 return __acpi_match_device(device, ids, NULL) ? 0 : -ENOENT;
693}
694EXPORT_SYMBOL(acpi_match_device_ids);
695
696bool acpi_driver_match_device(struct device *dev,
697 const struct device_driver *drv)
698{
699 if (!drv->acpi_match_table)
700 return acpi_of_match_device(ACPI_COMPANION(dev),
701 drv->of_match_table);
702
703 return !!__acpi_match_device(acpi_companion_match(dev),
704 drv->acpi_match_table, drv->of_match_table);
705}
706EXPORT_SYMBOL_GPL(acpi_driver_match_device);
707
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719
720int acpi_bus_register_driver(struct acpi_driver *driver)
721{
722 int ret;
723
724 if (acpi_disabled)
725 return -ENODEV;
726 driver->drv.name = driver->name;
727 driver->drv.bus = &acpi_bus_type;
728 driver->drv.owner = driver->owner;
729
730 ret = driver_register(&driver->drv);
731 return ret;
732}
733
734EXPORT_SYMBOL(acpi_bus_register_driver);
735
736
737
738
739
740
741
742
743void acpi_bus_unregister_driver(struct acpi_driver *driver)
744{
745 driver_unregister(&driver->drv);
746}
747
748EXPORT_SYMBOL(acpi_bus_unregister_driver);
749
750
751
752
753
754static int acpi_bus_match(struct device *dev, struct device_driver *drv)
755{
756 struct acpi_device *acpi_dev = to_acpi_device(dev);
757 struct acpi_driver *acpi_drv = to_acpi_driver(drv);
758
759 return acpi_dev->flags.match_driver
760 && !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
761}
762
763static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env)
764{
765 return __acpi_device_uevent_modalias(to_acpi_device(dev), env);
766}
767
768static int acpi_device_probe(struct device *dev)
769{
770 struct acpi_device *acpi_dev = to_acpi_device(dev);
771 struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver);
772 int ret;
773
774 if (acpi_dev->handler && !acpi_is_pnp_device(acpi_dev))
775 return -EINVAL;
776
777 if (!acpi_drv->ops.add)
778 return -ENOSYS;
779
780 ret = acpi_drv->ops.add(acpi_dev);
781 if (ret)
782 return ret;
783
784 acpi_dev->driver = acpi_drv;
785 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
786 "Driver [%s] successfully bound to device [%s]\n",
787 acpi_drv->name, acpi_dev->pnp.bus_id));
788
789 if (acpi_drv->ops.notify) {
790 ret = acpi_device_install_notify_handler(acpi_dev);
791 if (ret) {
792 if (acpi_drv->ops.remove)
793 acpi_drv->ops.remove(acpi_dev);
794
795 acpi_dev->driver = NULL;
796 acpi_dev->driver_data = NULL;
797 return ret;
798 }
799 }
800
801 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found driver [%s] for device [%s]\n",
802 acpi_drv->name, acpi_dev->pnp.bus_id));
803 get_device(dev);
804 return 0;
805}
806
807static int acpi_device_remove(struct device * dev)
808{
809 struct acpi_device *acpi_dev = to_acpi_device(dev);
810 struct acpi_driver *acpi_drv = acpi_dev->driver;
811
812 if (acpi_drv) {
813 if (acpi_drv->ops.notify)
814 acpi_device_remove_notify_handler(acpi_dev);
815 if (acpi_drv->ops.remove)
816 acpi_drv->ops.remove(acpi_dev);
817 }
818 acpi_dev->driver = NULL;
819 acpi_dev->driver_data = NULL;
820
821 put_device(dev);
822 return 0;
823}
824
825struct bus_type acpi_bus_type = {
826 .name = "acpi",
827 .match = acpi_bus_match,
828 .probe = acpi_device_probe,
829 .remove = acpi_device_remove,
830 .uevent = acpi_device_uevent,
831};
832
833
834
835
836
837static int __init acpi_bus_init_irq(void)
838{
839 acpi_status status;
840 char *message = NULL;
841
842
843
844
845
846
847
848 switch (acpi_irq_model) {
849 case ACPI_IRQ_MODEL_PIC:
850 message = "PIC";
851 break;
852 case ACPI_IRQ_MODEL_IOAPIC:
853 message = "IOAPIC";
854 break;
855 case ACPI_IRQ_MODEL_IOSAPIC:
856 message = "IOSAPIC";
857 break;
858 case ACPI_IRQ_MODEL_GIC:
859 message = "GIC";
860 break;
861 case ACPI_IRQ_MODEL_PLATFORM:
862 message = "platform specific model";
863 break;
864 default:
865 printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
866 return -ENODEV;
867 }
868
869 printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
870
871 status = acpi_execute_simple_method(NULL, "\\_PIC", acpi_irq_model);
872 if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
873 ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
874 return -ENODEV;
875 }
876
877 return 0;
878}
879
880
881
882
883
884
885
886
887
888
889
890void __init acpi_early_init(void)
891{
892 acpi_status status;
893
894 if (acpi_disabled)
895 return;
896
897 printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
898
899
900 acpi_gbl_verify_table_checksum = TRUE;
901
902
903 if (!acpi_strict)
904 acpi_gbl_enable_interpreter_slack = TRUE;
905
906 acpi_gbl_permanent_mmap = 1;
907
908
909
910
911
912 dmi_check_system(dsdt_dmi_table);
913
914 status = acpi_reallocate_root_table();
915 if (ACPI_FAILURE(status)) {
916 printk(KERN_ERR PREFIX
917 "Unable to reallocate ACPI tables\n");
918 goto error0;
919 }
920
921 status = acpi_initialize_subsystem();
922 if (ACPI_FAILURE(status)) {
923 printk(KERN_ERR PREFIX
924 "Unable to initialize the ACPI Interpreter\n");
925 goto error0;
926 }
927
928 status = acpi_load_tables();
929 if (ACPI_FAILURE(status)) {
930 printk(KERN_ERR PREFIX
931 "Unable to load the System Description Tables\n");
932 goto error0;
933 }
934
935#ifdef CONFIG_X86
936 if (!acpi_ioapic) {
937
938 if (!(acpi_sci_flags & ACPI_MADT_TRIGGER_MASK)) {
939 acpi_sci_flags &= ~ACPI_MADT_TRIGGER_MASK;
940 acpi_sci_flags |= ACPI_MADT_TRIGGER_LEVEL;
941 }
942
943 acpi_pic_sci_set_trigger(acpi_gbl_FADT.sci_interrupt,
944 (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2);
945 } else {
946
947
948
949
950 acpi_gbl_FADT.sci_interrupt = acpi_sci_override_gsi;
951 }
952#endif
953 return;
954
955 error0:
956 disable_acpi();
957}
958
959
960
961
962
963
964
965
966
967
968
969void __init acpi_subsystem_init(void)
970{
971 acpi_status status;
972
973 if (acpi_disabled)
974 return;
975
976 status = acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE);
977 if (ACPI_FAILURE(status)) {
978 printk(KERN_ERR PREFIX "Unable to enable ACPI\n");
979 disable_acpi();
980 } else {
981
982
983
984
985
986
987 regulator_has_full_constraints();
988 }
989}
990
991static int __init acpi_bus_init(void)
992{
993 int result;
994 acpi_status status;
995
996 acpi_os_initialize1();
997
998 status = acpi_enable_subsystem(ACPI_NO_ACPI_ENABLE);
999 if (ACPI_FAILURE(status)) {
1000 printk(KERN_ERR PREFIX
1001 "Unable to start the ACPI Interpreter\n");
1002 goto error1;
1003 }
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013 status = acpi_ec_ecdt_probe();
1014
1015
1016 status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION);
1017 if (ACPI_FAILURE(status)) {
1018 printk(KERN_ERR PREFIX "Unable to initialize ACPI objects\n");
1019 goto error1;
1020 }
1021
1022
1023 acpi_early_processor_osc();
1024
1025
1026
1027
1028
1029 acpi_bus_osc_support();
1030
1031
1032
1033
1034
1035 acpi_sysfs_init();
1036
1037 acpi_early_processor_set_pdc();
1038
1039
1040
1041
1042
1043 acpi_boot_ec_enable();
1044
1045 printk(KERN_INFO PREFIX "Interpreter enabled\n");
1046
1047
1048 acpi_sleep_init();
1049
1050
1051
1052
1053 result = acpi_bus_init_irq();
1054 if (result)
1055 goto error1;
1056
1057
1058
1059
1060 status =
1061 acpi_install_notify_handler(ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY,
1062 &acpi_bus_notify, NULL);
1063 if (ACPI_FAILURE(status)) {
1064 printk(KERN_ERR PREFIX
1065 "Unable to register for device notifications\n");
1066 goto error1;
1067 }
1068
1069
1070
1071
1072 acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL);
1073
1074 result = bus_register(&acpi_bus_type);
1075 if (!result)
1076 return 0;
1077
1078
1079 error1:
1080 acpi_terminate();
1081 return -ENODEV;
1082}
1083
1084struct kobject *acpi_kobj;
1085EXPORT_SYMBOL_GPL(acpi_kobj);
1086
1087static int __init acpi_init(void)
1088{
1089 int result;
1090
1091 if (acpi_disabled) {
1092 printk(KERN_INFO PREFIX "Interpreter disabled.\n");
1093 return -ENODEV;
1094 }
1095
1096 acpi_kobj = kobject_create_and_add("acpi", firmware_kobj);
1097 if (!acpi_kobj) {
1098 printk(KERN_WARNING "%s: kset create error\n", __func__);
1099 acpi_kobj = NULL;
1100 }
1101
1102 init_acpi_device_notify();
1103 result = acpi_bus_init();
1104 if (result) {
1105 disable_acpi();
1106 return result;
1107 }
1108
1109 pci_mmcfg_late_init();
1110 acpi_scan_init();
1111 acpi_ec_init();
1112 acpi_debugfs_init();
1113 acpi_sleep_proc_init();
1114 acpi_wakeup_device_init();
1115 acpi_debugger_init();
1116 return 0;
1117}
1118
1119subsys_initcall(acpi_init);
1120