[NTOS:PO]
[reactos.git] / reactos / ntoskrnl / po / power.c
1 /*
2 * PROJECT: ReactOS Kernel
3 * LICENSE: GPL - See COPYING in the top level directory
4 * FILE: ntoskrnl/po/power.c
5 * PURPOSE: Power Manager
6 * PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
7 * Hervé Poussineau (hpoussin@reactos.com)
8 */
9
10 /* INCLUDES ******************************************************************/
11
12 #include <ntoskrnl.h>
13 #define NDEBUG
14 #include <debug.h>
15
16 /* GLOBALS *******************************************************************/
17
18 typedef struct _POWER_STATE_TRAVERSE_CONTEXT
19 {
20 SYSTEM_POWER_STATE SystemPowerState;
21 POWER_ACTION PowerAction;
22 PDEVICE_OBJECT PowerDevice;
23 } POWER_STATE_TRAVERSE_CONTEXT, *PPOWER_STATE_TRAVERSE_CONTEXT;
24
25 PDEVICE_NODE PopSystemPowerDeviceNode = NULL;
26 BOOLEAN PopAcpiPresent = FALSE;
27 POP_POWER_ACTION PopAction;
28 WORK_QUEUE_ITEM PopShutdownWorkItem;
29
30 /* PRIVATE FUNCTIONS *********************************************************/
31
32 static
33 NTSTATUS
34 NTAPI
35 PopRequestPowerIrpCompletion(IN PDEVICE_OBJECT DeviceObject,
36 IN PIRP Irp,
37 IN PVOID Context)
38 {
39 PIO_STACK_LOCATION Stack;
40 PREQUEST_POWER_COMPLETE CompletionRoutine;
41 POWER_STATE PowerState;
42
43 Stack = IoGetCurrentIrpStackLocation(Irp);
44 CompletionRoutine = Context;
45
46 PowerState.DeviceState = (ULONG_PTR)Stack->Parameters.Others.Argument3;
47 CompletionRoutine(Stack->Parameters.Others.Argument1,
48 (UCHAR)(ULONG_PTR)Stack->Parameters.Others.Argument2,
49 PowerState,
50 Stack->Parameters.Others.Argument4,
51 &Irp->IoStatus);
52
53 IoSkipCurrentIrpStackLocation(Irp);
54 IoFreeIrp(Irp);
55 ObDereferenceObject(DeviceObject);
56
57 return STATUS_MORE_PROCESSING_REQUIRED;
58 }
59
60 VOID
61 NTAPI
62 PopCleanupPowerState(IN PPOWER_STATE PowerState)
63 {
64 //UNIMPLEMENTED;
65 }
66
67 NTSTATUS
68 PopSendQuerySystemPowerState(PDEVICE_OBJECT DeviceObject, SYSTEM_POWER_STATE SystemState, POWER_ACTION PowerAction)
69 {
70 KEVENT Event;
71 IO_STATUS_BLOCK IoStatusBlock;
72 PIO_STACK_LOCATION IrpSp;
73 PIRP Irp;
74 NTSTATUS Status;
75
76 KeInitializeEvent(&Event,
77 NotificationEvent,
78 FALSE);
79
80 Irp = IoBuildSynchronousFsdRequest(IRP_MJ_POWER,
81 DeviceObject,
82 NULL,
83 0,
84 NULL,
85 &Event,
86 &IoStatusBlock);
87 if (!Irp) return STATUS_INSUFFICIENT_RESOURCES;
88
89 IrpSp = IoGetNextIrpStackLocation(Irp);
90 IrpSp->MinorFunction = IRP_MN_QUERY_POWER;
91 IrpSp->Parameters.Power.Type = SystemPowerState;
92 IrpSp->Parameters.Power.State.SystemState = SystemState;
93 IrpSp->Parameters.Power.ShutdownType = PowerAction;
94
95 Status = PoCallDriver(DeviceObject, Irp);
96 if (Status == STATUS_PENDING)
97 {
98 KeWaitForSingleObject(&Event,
99 Executive,
100 KernelMode,
101 FALSE,
102 NULL);
103 Status = IoStatusBlock.Status;
104 }
105
106 return Status;
107 }
108
109 NTSTATUS
110 PopSendSetSystemPowerState(PDEVICE_OBJECT DeviceObject, SYSTEM_POWER_STATE SystemState, POWER_ACTION PowerAction)
111 {
112 KEVENT Event;
113 IO_STATUS_BLOCK IoStatusBlock;
114 PIO_STACK_LOCATION IrpSp;
115 PIRP Irp;
116 NTSTATUS Status;
117
118 KeInitializeEvent(&Event,
119 NotificationEvent,
120 FALSE);
121
122 Irp = IoBuildSynchronousFsdRequest(IRP_MJ_POWER,
123 DeviceObject,
124 NULL,
125 0,
126 NULL,
127 &Event,
128 &IoStatusBlock);
129 if (!Irp) return STATUS_INSUFFICIENT_RESOURCES;
130
131 IrpSp = IoGetNextIrpStackLocation(Irp);
132 IrpSp->MinorFunction = IRP_MN_SET_POWER;
133 IrpSp->Parameters.Power.Type = SystemPowerState;
134 IrpSp->Parameters.Power.State.SystemState = SystemState;
135 IrpSp->Parameters.Power.ShutdownType = PowerAction;
136
137 Status = PoCallDriver(DeviceObject, Irp);
138 if (Status == STATUS_PENDING)
139 {
140 KeWaitForSingleObject(&Event,
141 Executive,
142 KernelMode,
143 FALSE,
144 NULL);
145 Status = IoStatusBlock.Status;
146 }
147
148 return Status;
149 }
150
151 NTSTATUS
152 PopQuerySystemPowerStateTraverse(PDEVICE_NODE DeviceNode,
153 PVOID Context)
154 {
155 PPOWER_STATE_TRAVERSE_CONTEXT PowerStateContext = Context;
156 PDEVICE_OBJECT TopDeviceObject;
157 NTSTATUS Status;
158
159 DPRINT("PopQuerySystemPowerStateTraverse(%p, %p)\n", DeviceNode, Context);
160
161 if (DeviceNode == IopRootDeviceNode)
162 return STATUS_SUCCESS;
163
164 if (DeviceNode->Flags & DNF_LEGACY_DRIVER)
165 return STATUS_SUCCESS;
166
167 TopDeviceObject = IoGetAttachedDeviceReference(DeviceNode->PhysicalDeviceObject);
168
169 Status = PopSendQuerySystemPowerState(TopDeviceObject,
170 PowerStateContext->SystemPowerState,
171 PowerStateContext->PowerAction);
172 if (!NT_SUCCESS(Status))
173 {
174 DPRINT1("Device '%wZ' failed IRP_MN_QUERY_POWER\n", &DeviceNode->InstancePath);
175 }
176 ObDereferenceObject(TopDeviceObject);
177
178 #if 0
179 return Status;
180 #else
181 return STATUS_SUCCESS;
182 #endif
183 }
184
185 NTSTATUS
186 PopSetSystemPowerStateTraverse(PDEVICE_NODE DeviceNode,
187 PVOID Context)
188 {
189 PPOWER_STATE_TRAVERSE_CONTEXT PowerStateContext = Context;
190 PDEVICE_OBJECT TopDeviceObject;
191 NTSTATUS Status;
192
193 DPRINT("PopSetSystemPowerStateTraverse(%p, %p)\n", DeviceNode, Context);
194
195 if (DeviceNode == IopRootDeviceNode)
196 return STATUS_SUCCESS;
197
198 if (DeviceNode->PhysicalDeviceObject == PowerStateContext->PowerDevice)
199 return STATUS_SUCCESS;
200
201 if (DeviceNode->Flags & DNF_LEGACY_DRIVER)
202 return STATUS_SUCCESS;
203
204 TopDeviceObject = IoGetAttachedDeviceReference(DeviceNode->PhysicalDeviceObject);
205 if (TopDeviceObject == PowerStateContext->PowerDevice)
206 {
207 ObDereferenceObject(TopDeviceObject);
208 return STATUS_SUCCESS;
209 }
210
211 Status = PopSendSetSystemPowerState(TopDeviceObject,
212 PowerStateContext->SystemPowerState,
213 PowerStateContext->PowerAction);
214 if (!NT_SUCCESS(Status))
215 {
216 DPRINT1("Device '%wZ' failed IRP_MN_SET_POWER\n", &DeviceNode->InstancePath);
217 }
218
219 ObDereferenceObject(TopDeviceObject);
220
221 #if 0
222 return Status;
223 #else
224 return STATUS_SUCCESS;
225 #endif
226 }
227
228 NTSTATUS
229 NTAPI
230 PopSetSystemPowerState(SYSTEM_POWER_STATE PowerState, POWER_ACTION PowerAction)
231 {
232 PDEVICE_OBJECT DeviceObject;
233 PDEVICE_OBJECT Fdo;
234 NTSTATUS Status;
235 DEVICETREE_TRAVERSE_CONTEXT Context;
236 POWER_STATE_TRAVERSE_CONTEXT PowerContext;
237
238 Status = IopGetSystemPowerDeviceObject(&DeviceObject);
239 if (!NT_SUCCESS(Status))
240 {
241 DPRINT1("No system power driver available\n");
242 Fdo = NULL;
243 }
244 else
245 {
246 Fdo = IoGetAttachedDeviceReference(DeviceObject);
247 if (Fdo == DeviceObject)
248 {
249 DPRINT("An FDO was not attached\n");
250 return STATUS_UNSUCCESSFUL;
251 }
252 }
253
254 /* Set up context */
255 PowerContext.PowerAction = PowerAction;
256 PowerContext.SystemPowerState = PowerState;
257 PowerContext.PowerDevice = Fdo;
258
259 /* Query for system power change */
260 IopInitDeviceTreeTraverseContext(&Context,
261 IopRootDeviceNode,
262 PopQuerySystemPowerStateTraverse,
263 &PowerContext);
264
265 Status = IopTraverseDeviceTree(&Context);
266 if (!NT_SUCCESS(Status))
267 {
268 DPRINT1("Query system power state failed; changing state anyway\n");
269 }
270
271 /* Set system power change */
272 IopInitDeviceTreeTraverseContext(&Context,
273 IopRootDeviceNode,
274 PopSetSystemPowerStateTraverse,
275 &PowerContext);
276
277 IopTraverseDeviceTree(&Context);
278
279 if (!PopAcpiPresent) return STATUS_NOT_IMPLEMENTED;
280
281 if (Fdo != NULL)
282 {
283 if (PowerAction != PowerActionShutdownReset)
284 PopSendSetSystemPowerState(Fdo, PowerState, PowerAction);
285
286 ObDereferenceObject(Fdo);
287 }
288
289 return Status;
290 }
291
292 BOOLEAN
293 NTAPI
294 INIT_FUNCTION
295 PoInitSystem(IN ULONG BootPhase)
296 {
297 PVOID NotificationEntry;
298 PCHAR CommandLine;
299 BOOLEAN ForceAcpiDisable = FALSE;
300
301 /* Check if this is phase 1 init */
302 if (BootPhase == 1)
303 {
304 /* Register power button notification */
305 IoRegisterPlugPlayNotification(EventCategoryDeviceInterfaceChange,
306 PNPNOTIFY_DEVICE_INTERFACE_INCLUDE_EXISTING_INTERFACES,
307 (PVOID)&GUID_DEVICE_SYS_BUTTON,
308 IopRootDeviceNode->
309 PhysicalDeviceObject->DriverObject,
310 PopAddRemoveSysCapsCallback,
311 NULL,
312 &NotificationEntry);
313
314 /* Register lid notification */
315 IoRegisterPlugPlayNotification(EventCategoryDeviceInterfaceChange,
316 PNPNOTIFY_DEVICE_INTERFACE_INCLUDE_EXISTING_INTERFACES,
317 (PVOID)&GUID_DEVICE_LID,
318 IopRootDeviceNode->
319 PhysicalDeviceObject->DriverObject,
320 PopAddRemoveSysCapsCallback,
321 NULL,
322 &NotificationEntry);
323 return TRUE;
324 }
325
326 /* Get the Command Line */
327 CommandLine = KeLoaderBlock->LoadOptions;
328
329 /* Upcase it */
330 _strupr(CommandLine);
331
332 /* Check for ACPI disable */
333 if (strstr(CommandLine, "NOACPI")) ForceAcpiDisable = TRUE;
334
335 if (ForceAcpiDisable)
336 {
337 /* Set the ACPI State to False if it's been forced that way */
338 PopAcpiPresent = FALSE;
339 }
340 else
341 {
342 /* Otherwise check if the LoaderBlock has a ACPI Table */
343 PopAcpiPresent = KeLoaderBlock->Extension->AcpiTable != NULL ? TRUE : FALSE;
344 }
345
346
347 /* Initialize volume support */
348 InitializeListHead(&PopVolumeDevices);
349 KeInitializeGuardedMutex(&PopVolumeLock);
350
351 /* Initialize support for dope */
352 KeInitializeSpinLock(&PopDopeGlobalLock);
353
354 /* Initialize support for shutdown waits and work-items */
355 PopInitShutdownList();
356
357 return TRUE;
358 }
359
360 VOID
361 NTAPI
362 PopPerfIdle(PPROCESSOR_POWER_STATE PowerState)
363 {
364 DPRINT1("PerfIdle function: %p\n", PowerState);
365 }
366
367 VOID
368 NTAPI
369 PopPerfIdleDpc(IN PKDPC Dpc,
370 IN PVOID DeferredContext,
371 IN PVOID SystemArgument1,
372 IN PVOID SystemArgument2)
373 {
374 /* Call the Perf Idle function */
375 PopPerfIdle(&((PKPRCB)DeferredContext)->PowerState);
376 }
377
378 VOID
379 FASTCALL
380 PopIdle0(IN PPROCESSOR_POWER_STATE PowerState)
381 {
382 /* FIXME: Extremly naive implementation */
383 HalProcessorIdle();
384 }
385
386 VOID
387 NTAPI
388 INIT_FUNCTION
389 PoInitializePrcb(IN PKPRCB Prcb)
390 {
391 /* Initialize the Power State */
392 RtlZeroMemory(&Prcb->PowerState, sizeof(Prcb->PowerState));
393 Prcb->PowerState.Idle0KernelTimeLimit = 0xFFFFFFFF;
394 Prcb->PowerState.CurrentThrottle = 100;
395 Prcb->PowerState.CurrentThrottleIndex = 0;
396 Prcb->PowerState.IdleFunction = PopIdle0;
397
398 /* Initialize the Perf DPC and Timer */
399 KeInitializeDpc(&Prcb->PowerState.PerfDpc, PopPerfIdleDpc, Prcb);
400 KeSetTargetProcessorDpc(&Prcb->PowerState.PerfDpc, Prcb->Number);
401 KeInitializeTimerEx(&Prcb->PowerState.PerfTimer, SynchronizationTimer);
402 }
403
404 /* PUBLIC FUNCTIONS **********************************************************/
405
406 /*
407 * @unimplemented
408 */
409 NTSTATUS
410 NTAPI
411 PoCancelDeviceNotify(IN PVOID NotifyBlock)
412 {
413 UNIMPLEMENTED;
414 return STATUS_NOT_IMPLEMENTED;
415 }
416
417 /*
418 * @unimplemented
419 */
420 NTSTATUS
421 NTAPI
422 PoRegisterDeviceNotify(OUT PVOID Unknown0,
423 IN ULONG Unknown1,
424 IN ULONG Unknown2,
425 IN ULONG Unknown3,
426 IN PVOID Unknown4,
427 IN PVOID Unknown5)
428 {
429 UNIMPLEMENTED;
430 return STATUS_NOT_IMPLEMENTED;
431 }
432
433 /*
434 * @unimplemented
435 */
436 VOID
437 NTAPI
438 PoShutdownBugCheck(IN BOOLEAN LogError,
439 IN ULONG BugCheckCode,
440 IN ULONG_PTR BugCheckParameter1,
441 IN ULONG_PTR BugCheckParameter2,
442 IN ULONG_PTR BugCheckParameter3,
443 IN ULONG_PTR BugCheckParameter4)
444 {
445 DPRINT1("PoShutdownBugCheck called\n");
446
447 /* FIXME: Log error if requested */
448 /* FIXME: Initiate a shutdown */
449
450 /* Bugcheck the system */
451 KeBugCheckEx(BugCheckCode,
452 BugCheckParameter1,
453 BugCheckParameter2,
454 BugCheckParameter3,
455 BugCheckParameter4);
456 }
457
458 /*
459 * @unimplemented
460 */
461 VOID
462 NTAPI
463 PoSetHiberRange(IN PVOID HiberContext,
464 IN ULONG Flags,
465 IN OUT PVOID StartPage,
466 IN ULONG Length,
467 IN ULONG PageTag)
468 {
469 UNIMPLEMENTED;
470 return;
471 }
472
473 /*
474 * @implemented
475 */
476 NTSTATUS
477 NTAPI
478 PoCallDriver(IN PDEVICE_OBJECT DeviceObject,
479 IN OUT PIRP Irp)
480 {
481 NTSTATUS Status;
482
483 /* Forward to Io -- FIXME! */
484 Status = IoCallDriver(DeviceObject, Irp);
485
486 /* Return status */
487 return Status;
488 }
489
490 /*
491 * @unimplemented
492 */
493 PULONG
494 NTAPI
495 PoRegisterDeviceForIdleDetection(IN PDEVICE_OBJECT DeviceObject,
496 IN ULONG ConservationIdleTime,
497 IN ULONG PerformanceIdleTime,
498 IN DEVICE_POWER_STATE State)
499 {
500 UNIMPLEMENTED;
501 return NULL;
502 }
503
504 /*
505 * @unimplemented
506 */
507 PVOID
508 NTAPI
509 PoRegisterSystemState(IN PVOID StateHandle,
510 IN EXECUTION_STATE Flags)
511 {
512 UNIMPLEMENTED;
513 return NULL;
514 }
515
516 /*
517 * @implemented
518 */
519 NTSTATUS
520 NTAPI
521 PoRequestPowerIrp(IN PDEVICE_OBJECT DeviceObject,
522 IN UCHAR MinorFunction,
523 IN POWER_STATE PowerState,
524 IN PREQUEST_POWER_COMPLETE CompletionFunction,
525 IN PVOID Context,
526 OUT PIRP *pIrp OPTIONAL)
527 {
528 PDEVICE_OBJECT TopDeviceObject;
529 PIO_STACK_LOCATION Stack;
530 PIRP Irp;
531
532 if (MinorFunction != IRP_MN_QUERY_POWER
533 && MinorFunction != IRP_MN_SET_POWER
534 && MinorFunction != IRP_MN_WAIT_WAKE)
535 return STATUS_INVALID_PARAMETER_2;
536
537 /* Always call the top of the device stack */
538 TopDeviceObject = IoGetAttachedDeviceReference(DeviceObject);
539
540 Irp = IoAllocateIrp(TopDeviceObject->StackSize + 2, FALSE);
541 if (!Irp)
542 {
543 ObDereferenceObject(TopDeviceObject);
544 return STATUS_INSUFFICIENT_RESOURCES;
545 }
546
547 Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
548 Irp->IoStatus.Information = 0;
549
550 IoSetNextIrpStackLocation(Irp);
551
552 Stack = IoGetNextIrpStackLocation(Irp);
553 Stack->Parameters.Others.Argument1 = DeviceObject;
554 Stack->Parameters.Others.Argument2 = (PVOID)(ULONG_PTR)MinorFunction;
555 Stack->Parameters.Others.Argument3 = (PVOID)(ULONG_PTR)PowerState.DeviceState;
556 Stack->Parameters.Others.Argument4 = Context;
557 Stack->DeviceObject = TopDeviceObject;
558 IoSetNextIrpStackLocation(Irp);
559
560 Stack = IoGetNextIrpStackLocation(Irp);
561 Stack->MajorFunction = IRP_MJ_POWER;
562 Stack->MinorFunction = MinorFunction;
563 if (MinorFunction == IRP_MN_WAIT_WAKE)
564 {
565 Stack->Parameters.WaitWake.PowerState = PowerState.SystemState;
566 }
567 else
568 {
569 Stack->Parameters.Power.Type = DevicePowerState;
570 Stack->Parameters.Power.State = PowerState;
571 }
572
573 if (pIrp != NULL)
574 *pIrp = Irp;
575
576 IoSetCompletionRoutine(Irp, PopRequestPowerIrpCompletion, CompletionFunction, TRUE, TRUE, TRUE);
577 PoCallDriver(TopDeviceObject, Irp);
578
579 /* Always return STATUS_PENDING. The completion routine
580 * will call CompletionFunction and complete the Irp.
581 */
582 return STATUS_PENDING;
583 }
584
585 /*
586 * @unimplemented
587 */
588 POWER_STATE
589 NTAPI
590 PoSetPowerState(IN PDEVICE_OBJECT DeviceObject,
591 IN POWER_STATE_TYPE Type,
592 IN POWER_STATE State)
593 {
594 POWER_STATE ps;
595
596 ASSERT_IRQL_LESS_OR_EQUAL(DISPATCH_LEVEL);
597
598 ps.SystemState = PowerSystemWorking; // Fully on
599 ps.DeviceState = PowerDeviceD0; // Fully on
600
601 return ps;
602 }
603
604 /*
605 * @unimplemented
606 */
607 VOID
608 NTAPI
609 PoSetSystemState(IN EXECUTION_STATE Flags)
610 {
611 UNIMPLEMENTED;
612 }
613
614 /*
615 * @unimplemented
616 */
617 VOID
618 NTAPI
619 PoStartNextPowerIrp(IN PIRP Irp)
620 {
621 UNIMPLEMENTED;
622 }
623
624 /*
625 * @unimplemented
626 */
627 VOID
628 NTAPI
629 PoUnregisterSystemState(IN PVOID StateHandle)
630 {
631 UNIMPLEMENTED;
632 }
633
634 /*
635 * @unimplemented
636 */
637 NTSTATUS
638 NTAPI
639 NtInitiatePowerAction(IN POWER_ACTION SystemAction,
640 IN SYSTEM_POWER_STATE MinSystemState,
641 IN ULONG Flags,
642 IN BOOLEAN Asynchronous)
643 {
644 UNIMPLEMENTED;
645 return STATUS_NOT_IMPLEMENTED;
646 }
647
648 /*
649 * @unimplemented
650 */
651 NTSTATUS
652 NTAPI
653 NtPowerInformation(IN POWER_INFORMATION_LEVEL PowerInformationLevel,
654 IN PVOID InputBuffer OPTIONAL,
655 IN ULONG InputBufferLength,
656 OUT PVOID OutputBuffer OPTIONAL,
657 IN ULONG OutputBufferLength)
658 {
659 NTSTATUS Status;
660
661 PAGED_CODE();
662
663 DPRINT("NtPowerInformation(PowerInformationLevel 0x%x, InputBuffer 0x%p, "
664 "InputBufferLength 0x%x, OutputBuffer 0x%p, OutputBufferLength 0x%x)\n",
665 PowerInformationLevel,
666 InputBuffer, InputBufferLength,
667 OutputBuffer, OutputBufferLength);
668
669 switch (PowerInformationLevel)
670 {
671 case SystemBatteryState:
672 {
673 PSYSTEM_BATTERY_STATE BatteryState = (PSYSTEM_BATTERY_STATE)OutputBuffer;
674
675 if (InputBuffer != NULL)
676 return STATUS_INVALID_PARAMETER;
677 if (OutputBufferLength < sizeof(SYSTEM_BATTERY_STATE))
678 return STATUS_BUFFER_TOO_SMALL;
679
680 /* Just zero the struct (and thus set BatteryState->BatteryPresent = FALSE) */
681 RtlZeroMemory(BatteryState, sizeof(SYSTEM_BATTERY_STATE));
682 BatteryState->EstimatedTime = MAXULONG;
683
684 Status = STATUS_SUCCESS;
685 break;
686 }
687
688 case SystemPowerCapabilities:
689 {
690 PSYSTEM_POWER_CAPABILITIES PowerCapabilities = (PSYSTEM_POWER_CAPABILITIES)OutputBuffer;
691
692 if (InputBuffer != NULL)
693 return STATUS_INVALID_PARAMETER;
694 if (OutputBufferLength < sizeof(SYSTEM_POWER_CAPABILITIES))
695 return STATUS_BUFFER_TOO_SMALL;
696
697 /* Just zero the struct (and thus set BatteryState->BatteryPresent = FALSE) */
698 RtlZeroMemory(PowerCapabilities, sizeof(SYSTEM_POWER_CAPABILITIES));
699 //PowerCapabilities->SystemBatteriesPresent = 0;
700
701 Status = STATUS_SUCCESS;
702 break;
703 }
704
705 default:
706 Status = STATUS_NOT_IMPLEMENTED;
707 DPRINT1("PowerInformationLevel 0x%x is UNIMPLEMENTED! Have a nice day.\n",
708 PowerInformationLevel);
709 break;
710 }
711
712 return Status;
713 }
714
715 NTSTATUS
716 NTAPI
717 NtGetDevicePowerState(IN HANDLE Device,
718 IN PDEVICE_POWER_STATE PowerState)
719 {
720 UNIMPLEMENTED;
721 return STATUS_NOT_IMPLEMENTED;
722 }
723
724 BOOLEAN
725 NTAPI
726 NtIsSystemResumeAutomatic(VOID)
727 {
728 UNIMPLEMENTED;
729 return FALSE;
730 }
731
732 NTSTATUS
733 NTAPI
734 NtRequestWakeupLatency(IN LATENCY_TIME Latency)
735 {
736 UNIMPLEMENTED;
737 return STATUS_NOT_IMPLEMENTED;
738 }
739
740 NTSTATUS
741 NTAPI
742 NtSetThreadExecutionState(IN EXECUTION_STATE esFlags,
743 OUT EXECUTION_STATE *PreviousFlags)
744 {
745 PKTHREAD Thread = KeGetCurrentThread();
746 KPROCESSOR_MODE PreviousMode = KeGetPreviousMode();
747 EXECUTION_STATE PreviousState;
748 PAGED_CODE();
749
750 /* Validate flags */
751 if (esFlags & ~(ES_CONTINUOUS | ES_USER_PRESENT))
752 {
753 /* Fail the request */
754 return STATUS_INVALID_PARAMETER;
755 }
756
757 /* Check for user parameters */
758 if (PreviousMode != KernelMode)
759 {
760 /* Protect the probes */
761 _SEH2_TRY
762 {
763 /* Check if the pointer is valid */
764 ProbeForWriteUlong(PreviousFlags);
765 }
766 _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
767 {
768 /* It isn't -- fail */
769 _SEH2_YIELD(return _SEH2_GetExceptionCode());
770 }
771 _SEH2_END;
772 }
773
774 /* Save the previous state, always masking in the continous flag */
775 PreviousState = Thread->PowerState | ES_CONTINUOUS;
776
777 /* Check if we need to update the power state */
778 if (esFlags & ES_CONTINUOUS) Thread->PowerState = (UCHAR)esFlags;
779
780 /* Protect the write back to user mode */
781 _SEH2_TRY
782 {
783 /* Return the previous flags */
784 *PreviousFlags = PreviousState;
785 }
786 _SEH2_EXCEPT(ExSystemExceptionFilter())
787 {
788 /* Something's wrong, fail */
789 _SEH2_YIELD(return _SEH2_GetExceptionCode());
790 }
791 _SEH2_END;
792
793 /* All is good */
794 return STATUS_SUCCESS;
795 }
796
797 NTSTATUS
798 NTAPI
799 NtSetSystemPowerState(IN POWER_ACTION SystemAction,
800 IN SYSTEM_POWER_STATE MinSystemState,
801 IN ULONG Flags)
802 {
803 KPROCESSOR_MODE PreviousMode = KeGetPreviousMode();
804 POP_POWER_ACTION Action = {0};
805 NTSTATUS Status;
806 ULONG Dummy;
807
808 /* Check for invalid parameter combinations */
809 if ((MinSystemState >= PowerSystemMaximum) ||
810 (MinSystemState <= PowerSystemUnspecified) ||
811 (SystemAction > PowerActionWarmEject) ||
812 (SystemAction < PowerActionReserved) ||
813 (Flags & ~(POWER_ACTION_QUERY_ALLOWED |
814 POWER_ACTION_UI_ALLOWED |
815 POWER_ACTION_OVERRIDE_APPS |
816 POWER_ACTION_LIGHTEST_FIRST |
817 POWER_ACTION_LOCK_CONSOLE |
818 POWER_ACTION_DISABLE_WAKES |
819 POWER_ACTION_CRITICAL)))
820 {
821 DPRINT1("NtSetSystemPowerState: Bad parameters!\n");
822 DPRINT1(" SystemAction: 0x%x\n", SystemAction);
823 DPRINT1(" MinSystemState: 0x%x\n", MinSystemState);
824 DPRINT1(" Flags: 0x%x\n", Flags);
825 return STATUS_INVALID_PARAMETER;
826 }
827
828 /* Check for user caller */
829 if (PreviousMode != KernelMode)
830 {
831 /* Check for shutdown permission */
832 if (!SeSinglePrivilegeCheck(SeShutdownPrivilege, PreviousMode))
833 {
834 /* Not granted */
835 DPRINT1("ERROR: Privilege not held for shutdown\n");
836 return STATUS_PRIVILEGE_NOT_HELD;
837 }
838
839 /* Do it as a kernel-mode caller for consistency with system state */
840 return ZwSetSystemPowerState(SystemAction, MinSystemState, Flags);
841 }
842
843 /* Read policy settings (partial shutdown vs. full shutdown) */
844 if (SystemAction == PowerActionShutdown) PopReadShutdownPolicy();
845
846 /* Disable lazy flushing of registry */
847 DPRINT("Stopping lazy flush\n");
848 CmSetLazyFlushState(FALSE);
849
850 /* Setup the power action */
851 Action.Action = SystemAction;
852 Action.Flags = Flags;
853
854 /* Notify callbacks */
855 DPRINT("Notifying callbacks\n");
856 ExNotifyCallback(PowerStateCallback, (PVOID)3, NULL);
857
858 /* Swap in any worker thread stacks */
859 DPRINT("Swapping worker threads\n");
860 ExSwapinWorkerThreads(FALSE);
861
862 /* Make our action global */
863 PopAction = Action;
864
865 /* Start power loop */
866 Status = STATUS_CANCELLED;
867 while (TRUE)
868 {
869 /* Break out if there's nothing to do */
870 if (Action.Action == PowerActionNone) break;
871
872 /* Check for first-pass or restart */
873 if (Status == STATUS_CANCELLED)
874 {
875 /* Check for shutdown action */
876 if ((PopAction.Action == PowerActionShutdown) ||
877 (PopAction.Action == PowerActionShutdownReset) ||
878 (PopAction.Action == PowerActionShutdownOff))
879 {
880 /* Set the action */
881 PopAction.Shutdown = TRUE;
882 }
883
884 /* Now we are good to go */
885 Status = STATUS_SUCCESS;
886 }
887
888 /* Check if we're still in an invalid status */
889 if (!NT_SUCCESS(Status)) break;
890
891 #ifndef NEWCC
892 /* Flush dirty cache pages */
893 CcRosFlushDirtyPages(-1, &Dummy, FALSE); //HACK: We really should wait here!
894 #else
895 Dummy = 0;
896 #endif
897
898 /* Flush all volumes and the registry */
899 DPRINT("Flushing volumes, cache flushed %lu pages\n", Dummy);
900 PopFlushVolumes(PopAction.Shutdown);
901
902 /* Set IRP for drivers */
903 PopAction.IrpMinor = IRP_MN_SET_POWER;
904 if (PopAction.Shutdown)
905 {
906 DPRINT("Queueing shutdown thread\n");
907 /* Check if we are running in the system context */
908 if (PsGetCurrentProcess() != PsInitialSystemProcess)
909 {
910 /* We're not, so use a worker thread for shutdown */
911 ExInitializeWorkItem(&PopShutdownWorkItem,
912 &PopGracefulShutdown,
913 NULL);
914
915 ExQueueWorkItem(&PopShutdownWorkItem, CriticalWorkQueue);
916
917 /* Spend us -- when we wake up, the system is good to go down */
918 KeSuspendThread(KeGetCurrentThread());
919 Status = STATUS_SYSTEM_SHUTDOWN;
920 goto Exit;
921
922 }
923 else
924 {
925 /* Do the shutdown inline */
926 PopGracefulShutdown(NULL);
927 }
928 }
929
930 /* You should not have made it this far */
931 // ASSERTMSG("System is still up and running?!", FALSE);
932 DPRINT1("System is still up and running, you may not have chosen a yet supported power option: %u\n", PopAction.Action);
933 break;
934 }
935
936 Exit:
937 /* We're done, return */
938 return Status;
939 }