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/* $Id: VBoxGuest-win-legacy.cpp $ */
/** @file
* VBoxGuest-win-legacy - Windows NT4 specifics.
*/
/*
* Copyright (C) 2010-2013 Oracle Corporation
*
* 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.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include "VBoxGuest-win.h"
#include "VBoxGuestInternal.h"
#include <VBox/err.h>
#include <VBox/log.h>
#include <VBox/version.h>
#include <VBox/VBoxGuestLib.h>
#include <iprt/string.h>
/*******************************************************************************
* Defined Constants And Macros *
*******************************************************************************/
#ifndef PCI_MAX_BUSES
# define PCI_MAX_BUSES 256
#endif
/*******************************************************************************
* Internal Functions *
*******************************************************************************/
RT_C_DECLS_BEGIN
static NTSTATUS vbgdNt4FindPciDevice(PULONG pulBusNumber, PPCI_SLOT_NUMBER pSlotNumber);
RT_C_DECLS_END
#ifdef ALLOC_PRAGMA
# pragma alloc_text(INIT, vbgdNt4CreateDevice)
# pragma alloc_text(INIT, vbgdNt4FindPciDevice)
#endif
/**
* Legacy helper function to create the device object.
*
* @returns NT status code.
*
* @param pDrvObj The driver object.
* @param pDevObj Unused. NULL. Dunno why it's here, makes no sense.
* @param pRegPath The driver registry path.
*/
NTSTATUS vbgdNt4CreateDevice(PDRIVER_OBJECT pDrvObj, PDEVICE_OBJECT pDevObj, PUNICODE_STRING pRegPath)
{
Log(("VBoxGuest::vbgdNt4CreateDevice: pDrvObj=%p, pDevObj=%p, pRegPath=%p\n", pDrvObj, pDevObj, pRegPath));
/*
* Find our virtual PCI device
*/
ULONG uBusNumber;
PCI_SLOT_NUMBER SlotNumber;
NTSTATUS rc = vbgdNt4FindPciDevice(&uBusNumber, &SlotNumber);
if (NT_ERROR(rc))
{
Log(("VBoxGuest::vbgdNt4CreateDevice: Device not found!\n"));
return rc;
}
/*
* Create device.
*/
UNICODE_STRING szDevName;
RtlInitUnicodeString(&szDevName, VBOXGUEST_DEVICE_NAME_NT);
PDEVICE_OBJECT pDeviceObject = NULL;
rc = IoCreateDevice(pDrvObj, sizeof(VBOXGUESTDEVEXTWIN), &szDevName, FILE_DEVICE_UNKNOWN, 0, FALSE, &pDeviceObject);
if (NT_SUCCESS(rc))
{
Log(("VBoxGuest::vbgdNt4CreateDevice: Device created\n"));
UNICODE_STRING DosName;
RtlInitUnicodeString(&DosName, VBOXGUEST_DEVICE_NAME_DOS);
rc = IoCreateSymbolicLink(&DosName, &szDevName);
if (NT_SUCCESS(rc))
{
Log(("VBoxGuest::vbgdNt4CreateDevice: Symlink created\n"));
/*
* Setup the device extension.
*/
Log(("VBoxGuest::vbgdNt4CreateDevice: Setting up device extension ...\n"));
PVBOXGUESTDEVEXTWIN pDevExt = (PVBOXGUESTDEVEXTWIN)pDeviceObject->DeviceExtension;
RT_ZERO(*pDevExt);
Log(("VBoxGuest::vbgdNt4CreateDevice: Device extension created\n"));
/* Store a reference to ourself. */
pDevExt->pDeviceObject = pDeviceObject;
/* Store bus and slot number we've queried before. */
pDevExt->busNumber = uBusNumber;
pDevExt->slotNumber = SlotNumber.u.AsULONG;
#ifdef VBOX_WITH_GUEST_BUGCHECK_DETECTION
rc = hlpRegisterBugCheckCallback(pDevExt);
#endif
/* Do the actual VBox init ... */
if (NT_SUCCESS(rc))
{
rc = vbgdNtInit(pDrvObj, pDeviceObject, pRegPath);
if (NT_SUCCESS(rc))
{
Log(("VBoxGuest::vbgdNt4CreateDevice: Returning rc = 0x%x (succcess)\n", rc));
return rc;
}
/* bail out */
}
IoDeleteSymbolicLink(&DosName);
}
else
Log(("VBoxGuest::vbgdNt4CreateDevice: IoCreateSymbolicLink failed with rc = %#x\n", rc));
IoDeleteDevice(pDeviceObject);
}
else
Log(("VBoxGuest::vbgdNt4CreateDevice: IoCreateDevice failed with rc = %#x\n", rc));
Log(("VBoxGuest::vbgdNt4CreateDevice: Returning rc = 0x%x\n", rc));
return rc;
}
/**
* Helper function to handle the PCI device lookup.
*
* @returns NT status code.
*
* @param pulBusNumber Where to return the bus number on success.
* @param pSlotNumber Where to return the slot number on success.
*/
static NTSTATUS vbgdNt4FindPciDevice(PULONG pulBusNumber, PPCI_SLOT_NUMBER pSlotNumber)
{
Log(("VBoxGuest::vbgdNt4FindPciDevice\n"));
PCI_SLOT_NUMBER SlotNumber;
SlotNumber.u.AsULONG = 0;
/* Scan each bus. */
for (ULONG ulBusNumber = 0; ulBusNumber < PCI_MAX_BUSES; ulBusNumber++)
{
/* Scan each device. */
for (ULONG deviceNumber = 0; deviceNumber < PCI_MAX_DEVICES; deviceNumber++)
{
SlotNumber.u.bits.DeviceNumber = deviceNumber;
/* Scan each function (not really required...). */
for (ULONG functionNumber = 0; functionNumber < PCI_MAX_FUNCTION; functionNumber++)
{
SlotNumber.u.bits.FunctionNumber = functionNumber;
/* Have a look at what's in this slot. */
PCI_COMMON_CONFIG PciData;
if (!HalGetBusData(PCIConfiguration, ulBusNumber, SlotNumber.u.AsULONG, &PciData, sizeof(ULONG)))
{
/* No such bus, we're done with it. */
deviceNumber = PCI_MAX_DEVICES;
break;
}
if (PciData.VendorID == PCI_INVALID_VENDORID)
/* We have to proceed to the next function. */
continue;
/* Check if it's another device. */
if ( PciData.VendorID != VMMDEV_VENDORID
|| PciData.DeviceID != VMMDEV_DEVICEID)
continue;
/* Hooray, we've found it! */
Log(("VBoxGuest::vbgdNt4FindPciDevice: Device found!\n"));
*pulBusNumber = ulBusNumber;
*pSlotNumber = SlotNumber;
return STATUS_SUCCESS;
}
}
}
return STATUS_DEVICE_DOES_NOT_EXIST;
}
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