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395 lines
11 KiB
395 lines
11 KiB
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/*++
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Copyright (c) 1998 - 1999 Microsoft Corporation
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Module Name:
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hidgame.c
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Abstract: Human Interface Device (HID) Gameport driver
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Environment:
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Kernel mode
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@@BEGIN_DDKSPLIT
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Author:
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Eliyas Yakub (Mar, 10, 1997)
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Revision History:
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Updated by Eliyas on Feb 5 1998
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OmSharma ( April 12, 1998 )
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MarcAnd 02-Jul-98 Quick tidy for DDK
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@@END_DDKSPLIT
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--*/
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#include "hidgame.h"
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text( INIT, DriverEntry )
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#pragma alloc_text( PAGE, HGM_CreateClose)
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#pragma alloc_text( PAGE, HGM_AddDevice)
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#pragma alloc_text( PAGE, HGM_Unload)
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#pragma alloc_text( PAGE, HGM_SystemControl)
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#endif /* ALLOC_PRAGMA */
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HIDGAME_GLOBAL Global;
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ULONG debugLevel;
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/*****************************************************************************
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*
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* @doc EXTERNAL
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*
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* @func NTSTATUS | DriverEntry |
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*
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* Installable driver initialization entry point.
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* <nl>This entry point is called directly by the I/O system.
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*
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* @parm IN PDRIVER_OBJECT | DriverObject |
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*
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* Pointer to the driver object
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*
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* @parm IN PUNICODE_STRING | RegistryPath |
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*
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* Pointer to a unicode string representing the path,
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* to driver-specific key in the registry.
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*
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* @rvalue STATUS_SUCCESS | success
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* @rvalue ??? | returned HidRegisterMinidriver()
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*
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*****************************************************************************/
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NTSTATUS EXTERNAL
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DriverEntry
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(
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IN PDRIVER_OBJECT DriverObject,
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IN PUNICODE_STRING RegistryPath
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)
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{
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NTSTATUS ntStatus;
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HID_MINIDRIVER_REGISTRATION hidMinidriverRegistration;
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debugLevel = HGM_DEFAULT_DEBUGLEVEL;
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HGM_DBGPRINT(FILE_HIDGAME| HGM_WARN, \
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("Hidgame.sys: Built %s at %s\n", __DATE__, __TIME__));
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HGM_DBGPRINT( FILE_HIDGAME | HGM_FENTRY,
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("DriverEntry(DriverObject=0x%x,RegistryPath=0x%x)",
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DriverObject, RegistryPath)
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);
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C_ASSERT(sizeof( OEMDATA[2] ) == sizeof(GAMEENUM_OEM_DATA) );
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ntStatus = HGM_DriverInit();
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if( NT_SUCCESS(ntStatus) )
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{
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DriverObject->MajorFunction[IRP_MJ_CREATE] =
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = HGM_CreateClose;
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DriverObject->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] =
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HGM_InternalIoctl;
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DriverObject->MajorFunction[IRP_MJ_PNP] = HGM_PnP;
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DriverObject->MajorFunction[IRP_MJ_POWER] = HGM_Power;
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DriverObject->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = HGM_SystemControl;
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DriverObject->DriverUnload = HGM_Unload;
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DriverObject->DriverExtension->AddDevice = HGM_AddDevice;
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/*
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* Register with HID.SYS module
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*/
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RtlZeroMemory(&hidMinidriverRegistration, sizeof(hidMinidriverRegistration));
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hidMinidriverRegistration.Revision = HID_REVISION;
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hidMinidriverRegistration.DriverObject = DriverObject;
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hidMinidriverRegistration.RegistryPath = RegistryPath;
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hidMinidriverRegistration.DeviceExtensionSize = sizeof(DEVICE_EXTENSION);
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hidMinidriverRegistration.DevicesArePolled = TRUE;
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HGM_DBGPRINT( FILE_HIDGAME | HGM_BABBLE2,
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("DeviceExtensionSize = %d",
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hidMinidriverRegistration.DeviceExtensionSize)
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);
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ntStatus = HidRegisterMinidriver(&hidMinidriverRegistration);
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HGM_DBGPRINT(FILE_HIDGAME | HGM_BABBLE2,
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("Registered with HID.SYS, returnCode=%x",
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ntStatus)
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);
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if( NT_SUCCESS(ntStatus) )
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{
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/*
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* Protect the list with a Mutex
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*/
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ExInitializeFastMutex (&Global.Mutex);
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/*
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* Initialize the device list head
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*/
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InitializeListHead(&Global.DeviceListHead);
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/*
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* Initialize gameport access spinlock
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*/
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KeInitializeSpinLock(&Global.SpinLock);
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}
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else
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{
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HGM_DBGPRINT(FILE_HIDGAME | HGM_ERROR,
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("Failed to registered with HID.SYS, returnCode=%x",
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ntStatus)
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);
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}
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}
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else
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{
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HGM_DBGPRINT(FILE_HIDGAME | HGM_ERROR,
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("Failed to initialize a timer")
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);
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}
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HGM_EXITPROC(FILE_HIDGAME | HGM_FEXIT_STATUSOK , "DriverEntry", ntStatus);
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return ntStatus;
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} /* DriverEntry */
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/*****************************************************************************
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*
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* @doc EXTERNAL
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*
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* @func NTSTATUS | HGM_CreateClose |
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*
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* Process the create and close IRPs sent to this device.
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*
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* @parm IN PDEVICE_OBJECT | DeviceObject |
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*
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* Pointer to the device object
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*
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* @parm IN PIRP | Irp |
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*
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* Pointer to an I/O Request Packet.
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*
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* @rvalue STATUS_SUCCESS | success
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* @rvalue STATUS_INVALID_PARAMETER | Irp not handled
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*
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*****************************************************************************/
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NTSTATUS EXTERNAL
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HGM_CreateClose
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(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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{
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PIO_STACK_LOCATION IrpStack;
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NTSTATUS ntStatus = STATUS_SUCCESS;
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PAGED_CODE ();
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HGM_DBGPRINT(FILE_HIDGAME | HGM_FENTRY,
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("HGM_CreateClose(DeviceObject=0x%x,Irp=0x%x)",
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DeviceObject, Irp) );
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/*
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* Get a pointer to the current location in the Irp.
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*/
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IrpStack = IoGetCurrentIrpStackLocation(Irp);
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switch(IrpStack->MajorFunction)
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{
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case IRP_MJ_CREATE:
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HGM_DBGPRINT(FILE_HIDGAME | HGM_BABBLE,
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("HGM_CreateClose:IRP_MJ_CREATE") );
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Irp->IoStatus.Information = 0;
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break;
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case IRP_MJ_CLOSE:
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HGM_DBGPRINT(FILE_HIDGAME | HGM_BABBLE,
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("HGM_CreateClose:IRP_MJ_CLOSE") );
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Irp->IoStatus.Information = 0;
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break;
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default:
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HGM_DBGPRINT(FILE_HIDGAME | HGM_WARN,
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("HGM_CreateClose:Not handled IrpStack->MajorFunction 0x%x",
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IrpStack->MajorFunction) );
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ntStatus = STATUS_INVALID_PARAMETER;
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break;
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}
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/*
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* Save Status for return and complete Irp
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*/
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Irp->IoStatus.Status = ntStatus;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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HGM_EXITPROC(FILE_HIDGAME | HGM_FEXIT_STATUSOK, "HGM_CreateClose", ntStatus);
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return ntStatus;
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} /* HGM_CreateClose */
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/*****************************************************************************
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*
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* @doc EXTERNAL
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*
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* @func NTSTATUS | HGM_AddDevice |
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*
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* Called by hidclass, allows us to initialize our device extensions.
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*
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* @parm IN PDRIVER_OBJECT | DriverObject |
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*
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* Pointer to the driver object
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*
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* @parm IN PDEVICE_OBJECT | FunctionalDeviceObject |
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*
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* Pointer to a functional device object created by hidclass.
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*
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* @rvalue STATUS_SUCCESS | success
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*
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*****************************************************************************/
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NTSTATUS EXTERNAL
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HGM_AddDevice
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(
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IN PDRIVER_OBJECT DriverObject,
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IN PDEVICE_OBJECT FunctionalDeviceObject
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)
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{
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NTSTATUS ntStatus = STATUS_SUCCESS;
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PDEVICE_OBJECT DeviceObject;
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PDEVICE_EXTENSION DeviceExtension;
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PAGED_CODE ();
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HGM_DBGPRINT( FILE_HIDGAME | HGM_FENTRY,
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("HGM_AddDevice(DriverObject=0x%x,FunctionalDeviceObject=0x%x)",
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DriverObject, FunctionalDeviceObject) );
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ASSERTMSG("HGM_AddDevice:", FunctionalDeviceObject != NULL);
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DeviceObject = FunctionalDeviceObject;
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/*
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* Initialize the device extension.
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*/
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DeviceExtension = GET_MINIDRIVER_DEVICE_EXTENSION (DeviceObject);
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DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
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/*
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* Initialize the list
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*/
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InitializeListHead(&DeviceExtension->Link);
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/*
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* Acquire mutex before modifying the Global Linked list of devices
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*/
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ExAcquireFastMutex (&Global.Mutex);
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/*
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* Add this device to the linked list of devices
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*/
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InsertTailList(&Global.DeviceListHead, &DeviceExtension->Link);
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/*
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* Release the mutex
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*/
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ExReleaseFastMutex (&Global.Mutex);
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/*
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* Initialize the remove lock
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*/
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DeviceExtension->RequestCount = 1;
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KeInitializeEvent(&DeviceExtension->RemoveEvent,
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SynchronizationEvent,
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FALSE);
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HGM_EXITPROC(FILE_HIDGAME | HGM_FEXIT_STATUSOK, "HGM_AddDevice", ntStatus);
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return ntStatus;
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} /* HGM_AddDevice */
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/*****************************************************************************
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*
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* @doc EXTERNAL
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*
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* @func NTSTATUS | HGM_SystemControl |
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*
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* Process the WMI IRPs sent to this device.
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*
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* @parm IN PDEVICE_OBJECT | DeviceObject |
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*
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* Pointer to the device object
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*
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* @parm IN PIRP | Irp |
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*
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* Pointer to an I/O Request Packet.
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*
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* @rvalue STATUS_SUCCESS | success
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* @rvalue STATUS_INVALID_PARAMETER | Irp not handled
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*
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*****************************************************************************/
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NTSTATUS EXTERNAL
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HGM_SystemControl
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(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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{
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PAGED_CODE ();
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HGM_DBGPRINT(FILE_HIDGAME | HGM_FENTRY,
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("HGM_SystemControl(DeviceObject=0x%x,Irp=0x%x)",
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DeviceObject, Irp) );
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IoSkipCurrentIrpStackLocation(Irp);
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return IoCallDriver(GET_NEXT_DEVICE_OBJECT(DeviceObject), Irp);
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} /* HGM_SystemControl */
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/*****************************************************************************
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*
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* @doc EXTERNAL
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*
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* @func void | HGM_Unload |
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*
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* Free all the allocated resources, etc.
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*
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* @parm IN PDRIVER_OBJECT | DeviceObject |
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*
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* Pointer to the driver object
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*
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*
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*****************************************************************************/
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VOID EXTERNAL
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HGM_Unload
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(
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IN PDRIVER_OBJECT DriverObject
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)
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{
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PAGED_CODE();
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HGM_DBGPRINT(FILE_HIDGAME | HGM_FENTRY,
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("HGM_Unload Enter"));
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/*
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* All the device objects should be gone
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*/
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ASSERT ( NULL == DriverObject->DeviceObject);
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HGM_EXITPROC(FILE_HIDGAME | HGM_FEXIT_STATUSOK, "HGM_Unload:", STATUS_SUCCESS );
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return;
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} /* HGM_Unload */
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