mirror of
https://github.com/reactos/reactos.git
synced 2024-11-18 21:13:52 +00:00
715 lines
20 KiB
C
715 lines
20 KiB
C
/*
|
|
* PROJECT: ReactOS PCI Bus driver
|
|
* FILE: pci.c
|
|
* PURPOSE: Driver entry
|
|
* PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
|
|
* UPDATE HISTORY:
|
|
* 10-09-2001 CSH Created
|
|
*/
|
|
|
|
#include "pci.h"
|
|
|
|
#include <stdio.h>
|
|
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
static DRIVER_DISPATCH PciDispatchDeviceControl;
|
|
static NTSTATUS NTAPI PciDispatchDeviceControl(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);
|
|
|
|
static DRIVER_ADD_DEVICE PciAddDevice;
|
|
static NTSTATUS NTAPI PciAddDevice(IN PDRIVER_OBJECT DriverObject, IN PDEVICE_OBJECT PhysicalDeviceObject);
|
|
|
|
static DRIVER_DISPATCH PciPowerControl;
|
|
static NTSTATUS NTAPI PciPowerControl(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);
|
|
|
|
static DRIVER_DISPATCH PciPnpControl;
|
|
static NTSTATUS NTAPI PciPnpControl(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp);
|
|
|
|
|
|
#ifdef ALLOC_PRAGMA
|
|
|
|
// Make the initialization routines discardable, so that they
|
|
// don't waste space
|
|
|
|
#pragma alloc_text(init, DriverEntry)
|
|
|
|
#endif /* ALLOC_PRAGMA */
|
|
|
|
/*** PUBLIC ******************************************************************/
|
|
|
|
PPCI_DRIVER_EXTENSION DriverExtension = NULL;
|
|
|
|
/*** PRIVATE *****************************************************************/
|
|
|
|
static NTSTATUS
|
|
NTAPI
|
|
PciDispatchDeviceControl(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
{
|
|
PIO_STACK_LOCATION IrpSp;
|
|
NTSTATUS Status;
|
|
|
|
UNREFERENCED_PARAMETER(DeviceObject);
|
|
DPRINT("Called. IRP is at (0x%p)\n", Irp);
|
|
|
|
Irp->IoStatus.Information = 0;
|
|
|
|
IrpSp = IoGetCurrentIrpStackLocation(Irp);
|
|
switch (IrpSp->Parameters.DeviceIoControl.IoControlCode)
|
|
{
|
|
default:
|
|
DPRINT("Unknown IOCTL 0x%X\n", IrpSp->Parameters.DeviceIoControl.IoControlCode);
|
|
Status = STATUS_NOT_IMPLEMENTED;
|
|
break;
|
|
}
|
|
|
|
if (Status != STATUS_PENDING)
|
|
{
|
|
Irp->IoStatus.Status = Status;
|
|
|
|
DPRINT("Completing IRP at 0x%p\n", Irp);
|
|
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
}
|
|
|
|
DPRINT("Leaving. Status 0x%X\n", Status);
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
static NTSTATUS
|
|
NTAPI
|
|
PciPnpControl(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
/*
|
|
* FUNCTION: Handle Plug and Play IRPs
|
|
* ARGUMENTS:
|
|
* DeviceObject = Pointer to PDO or FDO
|
|
* Irp = Pointer to IRP that should be handled
|
|
* RETURNS:
|
|
* Status
|
|
*/
|
|
{
|
|
PCOMMON_DEVICE_EXTENSION DeviceExtension;
|
|
NTSTATUS Status;
|
|
|
|
DeviceExtension = (PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
|
|
|
|
DPRINT("IsFDO %u\n", DeviceExtension->IsFDO);
|
|
|
|
if (DeviceExtension->IsFDO)
|
|
{
|
|
Status = FdoPnpControl(DeviceObject, Irp);
|
|
}
|
|
else
|
|
{
|
|
Status = PdoPnpControl(DeviceObject, Irp);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
static NTSTATUS
|
|
NTAPI
|
|
PciPowerControl(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp)
|
|
/*
|
|
* FUNCTION: Handle power management IRPs
|
|
* ARGUMENTS:
|
|
* DeviceObject = Pointer to PDO or FDO
|
|
* Irp = Pointer to IRP that should be handled
|
|
* RETURNS:
|
|
* Status
|
|
*/
|
|
{
|
|
PCOMMON_DEVICE_EXTENSION DeviceExtension;
|
|
NTSTATUS Status;
|
|
|
|
DeviceExtension = (PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
|
|
|
|
if (DeviceExtension->IsFDO)
|
|
{
|
|
Status = FdoPowerControl(DeviceObject, Irp);
|
|
}
|
|
else
|
|
{
|
|
Status = PdoPowerControl(DeviceObject, Irp);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
static NTSTATUS
|
|
NTAPI
|
|
PciAddDevice(
|
|
IN PDRIVER_OBJECT DriverObject,
|
|
IN PDEVICE_OBJECT PhysicalDeviceObject)
|
|
{
|
|
PFDO_DEVICE_EXTENSION DeviceExtension;
|
|
PDEVICE_OBJECT Fdo;
|
|
NTSTATUS Status;
|
|
|
|
DPRINT("Called\n");
|
|
if (PhysicalDeviceObject == NULL)
|
|
return STATUS_SUCCESS;
|
|
|
|
Status = IoCreateDevice(DriverObject,
|
|
sizeof(FDO_DEVICE_EXTENSION),
|
|
NULL,
|
|
FILE_DEVICE_BUS_EXTENDER,
|
|
FILE_DEVICE_SECURE_OPEN,
|
|
TRUE,
|
|
&Fdo);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT("IoCreateDevice() failed with status 0x%X\n", Status);
|
|
return Status;
|
|
}
|
|
|
|
DeviceExtension = (PFDO_DEVICE_EXTENSION)Fdo->DeviceExtension;
|
|
|
|
RtlZeroMemory(DeviceExtension, sizeof(FDO_DEVICE_EXTENSION));
|
|
|
|
DeviceExtension->Common.IsFDO = TRUE;
|
|
|
|
DeviceExtension->Ldo = IoAttachDeviceToDeviceStack(Fdo,
|
|
PhysicalDeviceObject);
|
|
|
|
DeviceExtension->State = dsStopped;
|
|
|
|
Fdo->Flags &= ~DO_DEVICE_INITIALIZING;
|
|
|
|
//Fdo->Flags |= DO_POWER_PAGABLE;
|
|
|
|
DPRINT("Done AddDevice\n");
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
DRIVER_UNLOAD PciUnload;
|
|
|
|
VOID
|
|
NTAPI
|
|
PciUnload(
|
|
IN PDRIVER_OBJECT DriverObject)
|
|
{
|
|
/* The driver object extension is destroyed by the I/O manager */
|
|
UNREFERENCED_PARAMETER(DriverObject);
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
DriverEntry(
|
|
IN PDRIVER_OBJECT DriverObject,
|
|
IN PUNICODE_STRING RegistryPath)
|
|
{
|
|
NTSTATUS Status;
|
|
|
|
UNREFERENCED_PARAMETER(RegistryPath);
|
|
DPRINT("Peripheral Component Interconnect Bus Driver\n");
|
|
|
|
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = PciDispatchDeviceControl;
|
|
DriverObject->MajorFunction[IRP_MJ_PNP] = PciPnpControl;
|
|
DriverObject->MajorFunction[IRP_MJ_POWER] = PciPowerControl;
|
|
DriverObject->DriverExtension->AddDevice = PciAddDevice;
|
|
DriverObject->DriverUnload = PciUnload;
|
|
|
|
Status = IoAllocateDriverObjectExtension(DriverObject,
|
|
DriverObject,
|
|
sizeof(PCI_DRIVER_EXTENSION),
|
|
(PVOID*)&DriverExtension);
|
|
if (!NT_SUCCESS(Status))
|
|
return Status;
|
|
|
|
RtlZeroMemory(DriverExtension, sizeof(PCI_DRIVER_EXTENSION));
|
|
|
|
InitializeListHead(&DriverExtension->BusListHead);
|
|
KeInitializeSpinLock(&DriverExtension->BusListLock);
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
PciCreateDeviceIDString(PUNICODE_STRING DeviceID,
|
|
PPCI_DEVICE Device)
|
|
{
|
|
WCHAR Buffer[256];
|
|
|
|
swprintf(Buffer,
|
|
L"PCI\\VEN_%04X&DEV_%04X&SUBSYS_%08X&REV_%02X",
|
|
Device->PciConfig.VendorID,
|
|
Device->PciConfig.DeviceID,
|
|
(Device->PciConfig.u.type0.SubSystemID << 16) +
|
|
Device->PciConfig.u.type0.SubVendorID,
|
|
Device->PciConfig.RevisionID);
|
|
|
|
return RtlCreateUnicodeString(DeviceID, Buffer) ? STATUS_SUCCESS : STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
PciCreateInstanceIDString(PUNICODE_STRING InstanceID,
|
|
PPCI_DEVICE Device)
|
|
{
|
|
WCHAR Buffer[3];
|
|
|
|
swprintf(Buffer, L"%02X", Device->SlotNumber.u.AsULONG & 0xff);
|
|
|
|
return RtlCreateUnicodeString(InstanceID, Buffer) ? STATUS_SUCCESS : STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
PciCreateHardwareIDsString(PUNICODE_STRING HardwareIDs,
|
|
PPCI_DEVICE Device)
|
|
{
|
|
WCHAR Buffer[256];
|
|
UNICODE_STRING BufferU;
|
|
ULONG Index;
|
|
|
|
Index = 0;
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\VEN_%04X&DEV_%04X&SUBSYS_%08X&REV_%02X",
|
|
Device->PciConfig.VendorID,
|
|
Device->PciConfig.DeviceID,
|
|
(Device->PciConfig.u.type0.SubSystemID << 16) +
|
|
Device->PciConfig.u.type0.SubVendorID,
|
|
Device->PciConfig.RevisionID);
|
|
Index++;
|
|
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\VEN_%04X&DEV_%04X&SUBSYS_%08X",
|
|
Device->PciConfig.VendorID,
|
|
Device->PciConfig.DeviceID,
|
|
(Device->PciConfig.u.type0.SubSystemID << 16) +
|
|
Device->PciConfig.u.type0.SubVendorID);
|
|
Index++;
|
|
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\VEN_%04X&DEV_%04X&CC_%02X%02X%02X",
|
|
Device->PciConfig.VendorID,
|
|
Device->PciConfig.DeviceID,
|
|
Device->PciConfig.BaseClass,
|
|
Device->PciConfig.SubClass,
|
|
Device->PciConfig.ProgIf);
|
|
Index++;
|
|
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\VEN_%04X&DEV_%04X&CC_%02X%02X",
|
|
Device->PciConfig.VendorID,
|
|
Device->PciConfig.DeviceID,
|
|
Device->PciConfig.BaseClass,
|
|
Device->PciConfig.SubClass);
|
|
Index++;
|
|
|
|
Buffer[Index] = UNICODE_NULL;
|
|
|
|
BufferU.Length = BufferU.MaximumLength = (USHORT) Index * sizeof(WCHAR);
|
|
BufferU.Buffer = Buffer;
|
|
|
|
return PciDuplicateUnicodeString(0, &BufferU, HardwareIDs);
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
PciCreateCompatibleIDsString(PUNICODE_STRING CompatibleIDs,
|
|
PPCI_DEVICE Device)
|
|
{
|
|
WCHAR Buffer[256];
|
|
UNICODE_STRING BufferU;
|
|
ULONG Index;
|
|
|
|
Index = 0;
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\VEN_%04X&DEV_%04X&REV_%02X",
|
|
Device->PciConfig.VendorID,
|
|
Device->PciConfig.DeviceID,
|
|
Device->PciConfig.RevisionID);
|
|
Index++;
|
|
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\VEN_%04X&DEV_%04X",
|
|
Device->PciConfig.VendorID,
|
|
Device->PciConfig.DeviceID);
|
|
Index++;
|
|
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\VEN_%04X&CC_%02X%02X%02X",
|
|
Device->PciConfig.VendorID,
|
|
Device->PciConfig.BaseClass,
|
|
Device->PciConfig.SubClass,
|
|
Device->PciConfig.ProgIf);
|
|
Index++;
|
|
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\VEN_%04X&CC_%02X%02X",
|
|
Device->PciConfig.VendorID,
|
|
Device->PciConfig.BaseClass,
|
|
Device->PciConfig.SubClass);
|
|
Index++;
|
|
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\VEN_%04X",
|
|
Device->PciConfig.VendorID);
|
|
Index++;
|
|
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\CC_%02X%02X%02X",
|
|
Device->PciConfig.BaseClass,
|
|
Device->PciConfig.SubClass,
|
|
Device->PciConfig.ProgIf);
|
|
Index++;
|
|
|
|
Index += swprintf(&Buffer[Index],
|
|
L"PCI\\CC_%02X%02X",
|
|
Device->PciConfig.BaseClass,
|
|
Device->PciConfig.SubClass);
|
|
Index++;
|
|
|
|
Buffer[Index] = UNICODE_NULL;
|
|
|
|
BufferU.Length = BufferU.MaximumLength = (USHORT)Index * sizeof(WCHAR);
|
|
BufferU.Buffer = Buffer;
|
|
|
|
return PciDuplicateUnicodeString(0, &BufferU, CompatibleIDs);
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
PciCreateDeviceDescriptionString(PUNICODE_STRING DeviceDescription,
|
|
PPCI_DEVICE Device)
|
|
{
|
|
PCWSTR Description;
|
|
|
|
switch (Device->PciConfig.BaseClass)
|
|
{
|
|
case PCI_CLASS_PRE_20:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
case PCI_SUBCLASS_PRE_20_VGA:
|
|
Description = L"VGA device";
|
|
break;
|
|
|
|
default:
|
|
case PCI_SUBCLASS_PRE_20_NON_VGA:
|
|
Description = L"PCI device";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_MASS_STORAGE_CTLR:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
case PCI_SUBCLASS_MSC_SCSI_BUS_CTLR:
|
|
Description = L"SCSI controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_MSC_IDE_CTLR:
|
|
Description = L"IDE controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_MSC_FLOPPY_CTLR:
|
|
Description = L"Floppy disk controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_MSC_IPI_CTLR:
|
|
Description = L"IPI controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_MSC_RAID_CTLR:
|
|
Description = L"RAID controller";
|
|
break;
|
|
|
|
default:
|
|
Description = L"Mass storage controller";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_NETWORK_CTLR:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
case PCI_SUBCLASS_NET_ETHERNET_CTLR:
|
|
Description = L"Ethernet controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_NET_TOKEN_RING_CTLR:
|
|
Description = L"Token-Ring controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_NET_FDDI_CTLR:
|
|
Description = L"FDDI controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_NET_ATM_CTLR:
|
|
Description = L"ATM controller";
|
|
break;
|
|
|
|
default:
|
|
Description = L"Network controller";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_DISPLAY_CTLR:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
case PCI_SUBCLASS_VID_VGA_CTLR:
|
|
Description = L"VGA display controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_VID_XGA_CTLR:
|
|
Description = L"XGA display controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_VID_3D_CTLR:
|
|
Description = L"Multimedia display controller";
|
|
break;
|
|
|
|
default:
|
|
Description = L"Other display controller";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_MULTIMEDIA_DEV:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
case PCI_SUBCLASS_MM_VIDEO_DEV:
|
|
Description = L"Multimedia video device";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_MM_AUDIO_DEV:
|
|
Description = L"Multimedia audio device";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_MM_TELEPHONY_DEV:
|
|
Description = L"Multimedia telephony device";
|
|
break;
|
|
|
|
default:
|
|
Description = L"Other multimedia device";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_MEMORY_CTLR:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
case PCI_SUBCLASS_MEM_RAM:
|
|
Description = L"PCI Memory";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_MEM_FLASH:
|
|
Description = L"PCI Flash Memory";
|
|
break;
|
|
|
|
default:
|
|
Description = L"Other memory controller";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_BRIDGE_DEV:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
case PCI_SUBCLASS_BR_HOST:
|
|
Description = L"PCI-Host bridge";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_BR_ISA:
|
|
Description = L"PCI-ISA bridge";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_BR_EISA:
|
|
Description = L"PCI-EISA bridge";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_BR_MCA:
|
|
Description = L"PCI-Micro Channel bridge";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_BR_PCI_TO_PCI:
|
|
Description = L"PCI-PCI bridge";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_BR_PCMCIA:
|
|
Description = L"PCI-PCMCIA bridge";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_BR_NUBUS:
|
|
Description = L"PCI-NUBUS bridge";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_BR_CARDBUS:
|
|
Description = L"PCI-CARDBUS bridge";
|
|
break;
|
|
|
|
default:
|
|
Description = L"Other bridge device";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_SIMPLE_COMMS_CTLR:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
|
|
default:
|
|
Description = L"Communication device";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_BASE_SYSTEM_DEV:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
|
|
default:
|
|
Description = L"System device";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_INPUT_DEV:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
|
|
default:
|
|
Description = L"Input device";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_DOCKING_STATION:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
|
|
default:
|
|
Description = L"Docking station";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_PROCESSOR:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
|
|
default:
|
|
Description = L"Processor";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PCI_CLASS_SERIAL_BUS_CTLR:
|
|
switch (Device->PciConfig.SubClass)
|
|
{
|
|
case PCI_SUBCLASS_SB_IEEE1394:
|
|
Description = L"FireWire controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_SB_ACCESS:
|
|
Description = L"ACCESS bus controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_SB_SSA:
|
|
Description = L"SSA controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_SB_USB:
|
|
Description = L"USB controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_SB_FIBRE_CHANNEL:
|
|
Description = L"Fibre Channel controller";
|
|
break;
|
|
|
|
case PCI_SUBCLASS_SB_SMBUS:
|
|
Description = L"SMBus controller";
|
|
break;
|
|
|
|
default:
|
|
Description = L"Other serial bus controller";
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
Description = L"Other PCI Device";
|
|
break;
|
|
}
|
|
|
|
return RtlCreateUnicodeString(DeviceDescription, Description) ? STATUS_SUCCESS : STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
PciCreateDeviceLocationString(PUNICODE_STRING DeviceLocation,
|
|
PPCI_DEVICE Device)
|
|
{
|
|
WCHAR Buffer[256];
|
|
|
|
swprintf(Buffer,
|
|
L"PCI-Bus %lu, Device %u, Function %u",
|
|
Device->BusNumber,
|
|
Device->SlotNumber.u.bits.DeviceNumber,
|
|
Device->SlotNumber.u.bits.FunctionNumber);
|
|
|
|
return RtlCreateUnicodeString(DeviceLocation, Buffer) ? STATUS_SUCCESS : STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
NTSTATUS
|
|
PciDuplicateUnicodeString(
|
|
IN ULONG Flags,
|
|
IN PCUNICODE_STRING SourceString,
|
|
OUT PUNICODE_STRING DestinationString)
|
|
{
|
|
if (SourceString == NULL ||
|
|
DestinationString == NULL ||
|
|
SourceString->Length > SourceString->MaximumLength ||
|
|
(SourceString->Length == 0 && SourceString->MaximumLength > 0 && SourceString->Buffer == NULL) ||
|
|
Flags == RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING ||
|
|
Flags >= 4)
|
|
{
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if ((SourceString->Length == 0) &&
|
|
(Flags != (RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE |
|
|
RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING)))
|
|
{
|
|
DestinationString->Length = 0;
|
|
DestinationString->MaximumLength = 0;
|
|
DestinationString->Buffer = NULL;
|
|
}
|
|
else
|
|
{
|
|
USHORT DestMaxLength = SourceString->Length;
|
|
|
|
if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
|
|
DestMaxLength += sizeof(UNICODE_NULL);
|
|
|
|
DestinationString->Buffer = ExAllocatePoolWithTag(PagedPool, DestMaxLength, TAG_PCI);
|
|
if (DestinationString->Buffer == NULL)
|
|
return STATUS_NO_MEMORY;
|
|
|
|
RtlCopyMemory(DestinationString->Buffer, SourceString->Buffer, SourceString->Length);
|
|
DestinationString->Length = SourceString->Length;
|
|
DestinationString->MaximumLength = DestMaxLength;
|
|
|
|
if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
|
|
DestinationString->Buffer[DestinationString->Length / sizeof(WCHAR)] = 0;
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
/* EOF */
|