| 1 | /* $Id: initterm-r0drv-nt.cpp 9582 2008-06-10 23:38:18Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Initialization & Termination, R0 Driver, NT.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.alldomusa.eu.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | *
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| 26 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 | /*******************************************************************************
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| 32 | * Header Files *
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| 33 | *******************************************************************************/
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| 34 | #include "the-nt-kernel.h"
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| 35 | #include <iprt/err.h>
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| 36 | #include <iprt/assert.h>
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| 37 | #include <iprt/mp.h>
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| 38 | #include "internal/initterm.h"
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| 39 | #include "internal-r0drv-nt.h"
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| 40 |
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| 41 |
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| 42 | /*******************************************************************************
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| 43 | * Global Variables *
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| 44 | *******************************************************************************/
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| 45 | /** The Nt CPU set.
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| 46 | * KeQueryActiveProcssors() cannot be called at all IRQLs and therefore we'll
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| 47 | * have to cache it. Fortunately, Nt doesn't really support taking CPUs offline
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| 48 | * or online. It's first with W2K8 that support for adding / onlining cpus at
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| 49 | * runtime is (officially) supported. Once we start caring about this, we'll
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| 50 | * simply use the native MP event callback and update this variable as cpus
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| 51 | * comes online.
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| 52 | */
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| 53 | RTCPUSET g_rtMpNtCpuSet;
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| 54 |
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| 55 | /** ExSetTimerResolution, introduced in W2K. */
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| 56 | PFNMYEXSETTIMERRESOLUTION g_pfnrtNtExSetTimerResolution;
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| 57 | /** KeFlushQueuedDpcs, introduced in XP. */
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| 58 | PFNMYKEFLUSHQUEUEDDPCS g_pfnrtNtKeFlushQueuedDpcs;
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| 59 |
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| 60 |
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| 61 | int rtR0InitNative(void)
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| 62 | {
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| 63 | /*
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| 64 | * Init the Nt cpu set.
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| 65 | */
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| 66 | KAFFINITY ActiveProcessors = KeQueryActiveProcessors();
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| 67 | RTCpuSetEmpty(&g_rtMpNtCpuSet);
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| 68 | RTCpuSetFromU64(&g_rtMpNtCpuSet, ActiveProcessors);
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| 69 |
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| 70 | /*
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| 71 | * Initialize the function pointers.
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| 72 | */
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| 73 | UNICODE_STRING RoutineName;
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| 74 | RtlInitUnicodeString(&RoutineName, L"ExSetTimerResolution");
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| 75 | g_pfnrtNtExSetTimerResolution = (PFNMYEXSETTIMERRESOLUTION)MmGetSystemRoutineAddress(&RoutineName);
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| 76 |
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| 77 | RtlInitUnicodeString(&RoutineName, L"KeFlushQueuedDpcs");
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| 78 | g_pfnrtNtKeFlushQueuedDpcs = (PFNMYKEFLUSHQUEUEDDPCS)MmGetSystemRoutineAddress(&RoutineName);
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| 79 |
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| 80 |
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| 81 | #if 0 /* W2K8 support */
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| 82 | return RTR0MpNotificationInit(NULL);
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| 83 | #else
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| 84 | return VINF_SUCCESS;
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| 85 | #endif
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| 86 | }
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| 87 |
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| 88 |
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| 89 | void rtR0TermNative(void)
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| 90 | {
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| 91 | #if 0 /* W2K8 support */
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| 92 | RTR0MpNotificationTerm(NULL);
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| 93 | #endif
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| 94 | }
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| 95 |
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