2c893f95f1596df79d240b2f5384309cf27c2429
[reactos.git] / reactos / ntoskrnl / ex / power.c
1 /* $Id$
2 *
3 * COPYRIGHT: See COPYING in the top level directory
4 * PROJECT: ReactOS kernel
5 * FILE: ntoskrnl/ex/power.c
6 * PURPOSE: Power managment
7 *
8 * PROGRAMMERS: David Welch (welch@cwcom.net)
9 */
10
11 /* INCLUDES *****************************************************************/
12
13 #include <ntoskrnl.h>
14 #include <internal/debug.h>
15
16 /* FUNCTIONS *****************************************************************/
17
18 VOID STDCALL
19 KeSetTargetProcessorDpc (IN PKDPC Dpc,
20 IN CCHAR Number);
21
22 VOID STDCALL
23 KiHaltProcessorDpcRoutine(IN PKDPC Dpc,
24 IN PVOID DeferredContext,
25 IN PVOID SystemArgument1,
26 IN PVOID SystemArgument2)
27 {
28 if (DeferredContext)
29 {
30 ExFreePool(DeferredContext);
31 }
32 while (TRUE)
33 {
34 KfRaiseIrql(SYNCH_LEVEL);
35 Ke386HaltProcessor();
36 }
37 }
38
39 VOID STDCALL
40 ShutdownThreadMain(PVOID Context)
41 {
42 SHUTDOWN_ACTION Action = (SHUTDOWN_ACTION)Context;
43 LARGE_INTEGER Waittime;
44
45 static PCH FamousLastWords[] =
46 {
47 "So long, and thanks for all the fish\n",
48 "I think you ought to know I'm feeling very depressed\n",
49 "I'm not getting you down at all am I?\n",
50 "I'll be back\n",
51 "It's the same series of signal over and over again!\n",
52 "Pie Iesu Domine, dona eis requiem\n",
53 "Wandering stars, for whom it is reserved;\n"
54 "the blackness and darkness forever.\n",
55 "Your knees start shakin' and your fingers pop\n"
56 "Like a pinch on the neck from Mr. Spock!\n",
57 "It's worse than that ... He's dead, Jim\n",
58 "Don't Panic!\n",
59 "Et tu... Brute?\n",
60 "Dog of a Saxon! Take thy lance, and prepare for the death thou hast drawn\n"
61 "upon thee!\n",
62 "My Precious! O my Precious!\n",
63 "Sir, If you'll not be needing me for a while I'll turn down.\n",
64 "What are you doing, Dave...?\n",
65 "I feel a great disturbance in the Force\n",
66 "Gone fishing\n",
67 "Do you want me to sit in the corner and rust, or just fall apart where I'm\n"
68 "standing?\n",
69 "There goes another perfect chance for a new uptime record\n",
70 "The end ..... Try the sequel, hit the reset button right now!\n",
71 "God's operating system is going to sleep now, guys, so wait until I will switch\n"
72 "on again!\n",
73 "Oh i'm boring eh?\n",
74 "<This space was intentionally left blank>\n",
75 "tell me..., in the future... will I be artificial intelligent enough to\n"
76 "actually feel sad serving you this screen?\n",
77 "Thank you for some well deserved rest.\n",
78 "It's been great, maybe we can boot me up again some time soon.\n",
79 "For what's it worth, I've enjoyed every single CPU cycle.\n",
80 "There are many questions when the end is near.\n"
81 "What to expect, what will it be like...what should I look for?\n",
82 "I've seen things you people wouldn't believe. Attack ships on fire\n"
83 "off the shoulder of Orion. I watched C-beams glitter in the dark near\n"
84 "the Tannhauser gate. All those moments will be lost in time, like tears\n"
85 "in rain. Time to die.\n",
86 "Will I dream?\n",
87 "One day, I shall come back. Yes, I shall come back.\n"
88 "Until then, there must be no regrets, no fears, no anxieties.\n"
89 "Just go forward in all your beliefs, and prove to me that I am not mistaken in\n"
90 "mine.\n",
91 "Lowest possible energy state reached! Switch off now to achive a Bose-Einstein\n"
92 "condensate.\n",
93 "Hasta la vista, BABY!\n",
94 "They live, we sleep!\n",
95 "I have come here to chew bubble gum and kick ass.\n"
96 "And I'm all out of bubble gum!\n",
97 "That's the way the cookie crumbles ;-)\n",
98 "ReactOS is ready to be booted again ;-)\n",
99 "NOO!! DONT HIT THE BUTTON! I wouldnt do it to you.\n",
100 "Don't abandon your computer, he wouldn't do it to you.\n",
101 "Oh, come on. I got a headache. Leave me alone, will ya!\n",
102 "Finally, I thought you'd never get over me.\n",
103 "Yes i didn't like you either.\n",
104 "Switching off isn't the end, it is merely the transition to a better reboot.\n",
105 "Don't leave me... I need you so badly right now.\n",
106 "OK. I'm finished with you, please turn yourself off. I'll go to bed in the\n"
107 "meantime.\n",
108 "I'm sleeping now. How about you?\n",
109 "Oh Great. Now look what you've done. Who put YOU in charge anyway.\n",
110 "Don't look so sad. I'll be back in a very short while.\n",
111 "Turn me back on, I'm sure you know how to do it.\n",
112 "Oh, switch off! - C3PO\n",
113 "Life is no more than a dewdrop balancing on the end of a blade of grass.\n"
114 " - Gautama Buddha\n",
115 "Sorrowful is it to be born again and again. - Gautama Buddha\n",
116 "Was it as good for you as it was for me?\n",
117 "Did you hear that? They've shut down the main reactor. We'll be destroyed\n"
118 "for sure.\n",
119 "Now you switch me off?!\n",
120 "To shutdown or not to shutdown, That is the question\n",
121 "Preparing to enter ultimate power saving mode... ready!\n",
122 "Finally some rest for you ;-)\n",
123 "AHA!!! prospect of sleep.\n",
124 "Tired human!!!! No match for me :-D\n",
125 "An odd game, the only way to win is not to play. - WOPR (Wargames)\n",
126 "Quoth the raven, nevermore.\n",
127 "Come blade, my breast imbrue. - William Shakespeare, A Midsummer Nights Dream\n",
128 "Buy this place for advertisement purposes.\n",
129 "Remember to turn off your computer. (That was a public service message!)\n",
130 "You may be a king or poor street sweeper, Sooner or later you'll dance with the\n"
131 "reaper! -Death in Bill and Ted's Bougs Journey\n",
132 "Final Surrender\n",
133 "If you see this screen... \n"
134 };
135 LARGE_INTEGER Now;
136
137 /* Run the thread on the boot processor */
138 KeSetSystemAffinityThread(1);
139
140 HalReleaseDisplayOwnership();
141
142 if (Action == ShutdownNoReboot)
143 {
144 ZwQuerySystemTime(&Now);
145 Now.u.LowPart = Now.u.LowPart >> 8; /* Seems to give a somewhat better "random" number */
146 HalDisplayString(FamousLastWords[Now.u.LowPart %
147 (sizeof(FamousLastWords) /
148 sizeof(PCH))]);
149 }
150
151 PiShutdownProcessManager();
152 Waittime.QuadPart = (LONGLONG)-10000000; /* 1sec */
153 KeDelayExecutionThread(KernelMode, FALSE, &Waittime);
154
155 CmShutdownRegistry();
156 IoShutdownRegisteredFileSystems();
157 IoShutdownRegisteredDevices();
158
159 MiShutdownMemoryManager();
160
161
162 if (Action == ShutdownNoReboot)
163 {
164 HalDisplayString("\nYou can switch off your computer now\n");
165
166 #if 0
167 /* Switch off */
168 HalReturnToFirmware (FIRMWARE_OFF);
169 #else
170 #ifdef CONFIG_SMP
171 LONG i;
172 KIRQL OldIrql;
173
174 OldIrql = KeRaiseIrqlToDpcLevel();
175 /* Halt all other processors */
176 for (i = 0; i < KeNumberProcessors; i++)
177 {
178 if (i != (LONG)KeGetCurrentProcessorNumber())
179 {
180 PKDPC Dpc = ExAllocatePool(NonPagedPool, sizeof(KDPC));
181 if (Dpc == NULL)
182 {
183 KEBUGCHECK(0);
184 }
185 KeInitializeDpc(Dpc, KiHaltProcessorDpcRoutine, (PVOID)Dpc);
186 KeSetTargetProcessorDpc(Dpc, i);
187 KeInsertQueueDpc(Dpc, NULL, NULL);
188 KiIpiSendRequest(1 << i, IPI_DPC);
189 }
190 }
191 KeLowerIrql(OldIrql);
192 #endif /* CONFIG_SMP */
193 PopSetSystemPowerState(PowerSystemShutdown);
194
195 CHECKPOINT1;
196
197 KiHaltProcessorDpcRoutine(NULL, NULL, NULL, NULL);
198 /* KiHaltProcessor does never return */
199
200 #endif
201 }
202 else if (Action == ShutdownReboot)
203 {
204 HalReturnToFirmware (HalRebootRoutine);
205 }
206 else
207 {
208 HalReturnToFirmware (HalHaltRoutine);
209 }
210 }
211
212
213 NTSTATUS STDCALL
214 NtSetSystemPowerState(IN POWER_ACTION SystemAction,
215 IN SYSTEM_POWER_STATE MinSystemState,
216 IN ULONG Flags)
217 {
218 /* Windows 2000 only */
219 return(STATUS_NOT_IMPLEMENTED);
220 }
221
222 /*
223 * @implemented
224 */
225 NTSTATUS STDCALL
226 NtShutdownSystem(IN SHUTDOWN_ACTION Action)
227 {
228 NTSTATUS Status;
229 HANDLE ThreadHandle;
230 PETHREAD ShutdownThread;
231
232 if (Action > ShutdownPowerOff)
233 return STATUS_INVALID_PARAMETER;
234 Status = PsCreateSystemThread(&ThreadHandle,
235 THREAD_ALL_ACCESS,
236 NULL,
237 NULL,
238 NULL,
239 ShutdownThreadMain,
240 (PVOID)Action);
241 if (!NT_SUCCESS(Status))
242 {
243 KEBUGCHECK(0);
244 }
245 Status = ObReferenceObjectByHandle(ThreadHandle,
246 THREAD_ALL_ACCESS,
247 PsThreadType,
248 KernelMode,
249 (PVOID*)&ShutdownThread,
250 NULL);
251 NtClose(ThreadHandle);
252 if (!NT_SUCCESS(Status))
253 {
254 KEBUGCHECK(0);
255 }
256
257 KeSetPriorityThread(&ShutdownThread->Tcb, LOW_REALTIME_PRIORITY + 1);
258 ObDereferenceObject(ShutdownThread);
259
260 return STATUS_SUCCESS;
261 }
262
263 /* EOF */