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|
/*********************************************************************************************
Initialisation function : call by system when driver load
DO :
create the device object with our extention (LOCAL_DEVICE_INFO)
try to find the PCI adapter
report ressource (IRQ and port to NT system)
initialise AMCC chip
connect the interrupt to our ISR
create symbolink link
IF FAIL write to WinDbg, free ressources and return STATUS_error_code
**********************************************************************************************/
NTSTATUS
DriverEntry(
IN PDRIVER_OBJECT [b]DriverObject[/b],
IN PUNICODE_STRING RegistryPath
)
{
PDEVICE_OBJECT deviceObject = NULL;
NTSTATUS status;
UNICODE_STRING uniNtNameString;
UNICODE_STRING uniWin32NameString;
LOCAL_DEVICE_INFO *pDev;
BOOLEAN bResConflict;
PHYSICAL_ADDRESS PortAddress;
PHYSICAL_ADDRESS MappedAddress;
ULONG MemType;
KdPrint( ("OceDrv: Entered the Load/Unload driver!\n") );
//
// Create counted string version of our device name.
//
RtlInitUnicodeString( &uniNtNameString, NT_DEVICE_NAME );
//
// Create the device object
//
status = IoCreateDevice(
[b]DriverObject[/b],
sizeof(LOCAL_DEVICE_INFO), // Our private extension (in DeviceExtension of
// DeviceObject)
&uniNtNameString,
OCE_TYPE, // Our defined Device Type
0, // No standard device characteristics
FALSE, // Not exclusive device
&deviceObject
);
if (! NT_SUCCESS(status) )
{
KdPrint( ("OceDrv : can't create the device\n") );
return(status);
}
deviceObject->Flags |= DO_DIRECT_IO; // method direct I/O for read/write
pDev = (LOCAL_DEVICE_INFO *) deviceObject->DeviceExtension;
pDev->DeviceObject = deviceObject;
pDev->DeviceType = OCE_TYPE;
pDev->PortCount = PCI_NBRPORT * 4;
pDev->OpenCount = 0;
pDev->TimerRead = pDev->TimerWrite = -1;
// Try to find the PCI Adapter
status = pOceGetBus(deviceObject,PCI_VID,PCI_DID);
if(! status)
{
KdPrint( ("OceDrv: Couldn't find adapter\n") );
status = STATUS_UNSUCCESSFUL;
IoDeleteDevice( DriverObject->DeviceObject );
return(status);
}
pDev->Pbase = (pDev->PciConf.u.type0.BaseAddresses[0] & ~1); // base port of AMCC
// we mask bit 0 because it's just the I/O indicator
pDev->Irq = pDev->PciConf.u.type0.InterruptLine; // Irq of AMCC
pDev->isIrq = FALSE;
PortAddress.LowPart = pDev->Pbase;
PortAddress.HighPart = 0;
// Convert the IO port address into a form NT likes.
MemType = 1; // located in IO space
HalTranslateBusAddress( PCIBus,
0,
PortAddress,
&MemType,
&MappedAddress );
if (MemType == 0)
{
// Port is accessed through memory space - so get a virtual address
pDev->PortWasMapped = TRUE;
pDev->PortBase = MmMapIoSpace(MappedAddress, pDev->PortCount, FALSE);
}
else
{
pDev->PortWasMapped = FALSE;
pDev->PortBase = (PVOID)MappedAddress.LowPart;
}
PortAddress.LowPart = (ULONG) pDev->PortBase;
// report the status to NT system
if(! pOceReportUsage(DriverObject,PortAddress,pDev->PortCount,pDev->Irq,&bResConflict))
{
status = STATUS_DEVICE_CONFIGURATION_ERROR;
KdPrint( ("Resource reporting problem %8X", status) );
pOceUnMap(DriverObject);
IoDeleteDevice( DriverObject->DeviceObject );
return status;
}
// Init our Irq
if(! pOceConnectInterrupt(pDev,pDev->Irq))
{
status = STATUS_BIOS_FAILED_TO_CONNECT_INTERRUPT;
KdPrint( ("Interrupt Not connected %8X", status) );
pOceUnMap(DriverObject);
pOceUnreport(DriverObject);
IoDeleteDevice( DriverObject->DeviceObject );
return(status);
}
//
// Create dispatch points for create/open, close, unload.
//
[b]DriverObject[/b]->MajorFunction[IRP_MJ_CREATE] = OceOpen;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = OceClose;
DriverObject->MajorFunction[IRP_MJ_READ] = OceRead; // Read
DriverObject->MajorFunction[IRP_MJ_WRITE] = OceWrite; // Write
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = OceDispatch; // Ioctl
DriverObject->DriverStartIo = OceStartIo;
DriverObject->DriverUnload = OceUnload;
//
// Create counted string version of our Win32 device name.
//
RtlInitUnicodeString( &uniWin32NameString, DOS_DEVICE_NAME );
//
// Create a link from our device name to a name in the Win32 namespace.
//
status = IoCreateSymbolicLink( &uniWin32NameString, &uniNtNameString );
if (!NT_SUCCESS(status))
{
KdPrint( ("OceDrv: Couldn't create the symbolic link\n") );
pOceUnMap(DriverObject);
pOceDiscInterrupt(DriverObject);
pOceUnreport(DriverObject);
IoDeleteDevice( DriverObject->DeviceObject );
}
/************/
if(! pOceInitTimer(deviceObject))
{
KdPrint( ("OceDrv: Can't create timer\n") );
status = STATUS_INSUFFICIENT_RESOURCES;
pOceUnMap(DriverObject);
pOceDiscInterrupt(DriverObject);
pOceUnreport(DriverObject);
IoDeleteSymbolicLink(&uniWin32NameString);
IoDeleteDevice( DriverObject->DeviceObject );
}
else
{
pOceGetAdapter(pDev);
// init our event for pOceAdapterControl
KeInitializeEvent(&(pDev->AdapterChannelEvent),NotificationEvent,FALSE );
// init our event for pOceDpcForIsr()
KeInitializeEvent(&(pDev->ReadInterruptEvent),SynchronizationEvent,FALSE);
KeInitializeEvent(&(pDev->WriteInterruptEvent),SynchronizationEvent,FALSE);
// init our DPC for ISR
IoInitializeDpcRequest(deviceObject,pOceDpcForIsr);
AMCC_LoadRegister(&(pDev->DrvPort),pDev->PortBase);
bidon(pDev);
pOceInitDma(&(pDev->DrvPort));
KdPrint( ("OceDrv: All initialized!\n") );
}
return status;
} |
