initterm-r0drv-nt.cpp revision 7f49c2ea5ca960f40173fff078dc79bf40bd7ae2
/* $Id$ */
/** @file
* IPRT - Initialization & Termination, R0 Driver, NT.
*/
/*
* Copyright (C) 2006-2007 Sun Microsystems, Inc.
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 USA or visit http://www.sun.com if you need
* additional information or have any questions.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include "the-nt-kernel.h"
#include <iprt/err.h>
#include <iprt/assert.h>
#include <iprt/mp.h>
#include "internal/initterm.h"
#include "internal-r0drv-nt.h"
/*******************************************************************************
* Global Variables *
*******************************************************************************/
/** The Nt CPU set.
* KeQueryActiveProcssors() cannot be called at all IRQLs and therefore we'll
* have to cache it. Fortunately, Nt doesn't really support taking CPUs offline
* or online. It's first with W2K8 that support for adding / onlining cpus at
* runtime is (officially) supported. Once we start caring about this, we'll
* simply use the native MP event callback and update this variable as cpus
* comes online.
*/
RTCPUSET g_rtMpNtCpuSet;
/** ExSetTimerResolution, introduced in W2K. */
PFNMYEXSETTIMERRESOLUTION g_pfnrtNtExSetTimerResolution;
/** KeFlushQueuedDpcs, introduced in XP. */
PFNMYKEFLUSHQUEUEDDPCS g_pfnrtNtKeFlushQueuedDpcs;
int rtR0InitNative(void)
{
/*
* Init the Nt cpu set.
*/
KAFFINITY ActiveProcessors = KeQueryActiveProcessors();
RTCpuSetEmpty(&g_rtMpNtCpuSet);
RTCpuSetFromU64(&g_rtMpNtCpuSet, ActiveProcessors);
/*
* Initialize the function pointers.
*/
UNICODE_STRING RoutineName;
RtlInitUnicodeString(&RoutineName, L"ExSetTimerResolution");
g_pfnrtNtExSetTimerResolution = (PFNMYEXSETTIMERRESOLUTION)MmGetSystemRoutineAddress(&RoutineName);
RtlInitUnicodeString(&RoutineName, L"KeFlushQueuedDpcs");
g_pfnrtNtKeFlushQueuedDpcs = (PFNMYKEFLUSHQUEUEDDPCS)MmGetSystemRoutineAddress(&RoutineName);
#if 0 /* W2K8 support */
return RTR0MpNotificationInit(NULL);
#else
return VINF_SUCCESS;
#endif
}
void rtR0TermNative(void)
{
#if 0 /* W2K8 support */
RTR0MpNotificationTerm(NULL);
#endif
}