fdo.c File Reference

#include "sermouse.h"
#include <debug.h>

Include dependency graph for fdo.c:

Go to the source code of this file.

Functions
NTSTATUS NTAPI	SermouseAddDevice (IN PDRIVER_OBJECT DriverObject, IN PDEVICE_OBJECT Pdo)
NTSTATUS NTAPI	SermouseStartDevice (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
NTSTATUS NTAPI	SermousePnp (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)

Function Documentation

SermouseAddDevice()

NTSTATUS NTAPI SermouseAddDevice	(	IN PDRIVER_OBJECT	DriverObject,
		IN PDEVICE_OBJECT	Pdo
	)

Definition at line 14 of file fdo.c.

{
    PSERMOUSE_DRIVER_EXTENSION DriverExtension;
    PDEVICE_OBJECT Fdo;
    PSERMOUSE_DEVICE_EXTENSION DeviceExtension = NULL;
    NTSTATUS Status;
 
    TRACE_(SERMOUSE, "SermouseAddDevice called. Pdo = 0x%p\n", Pdo);
 
    if (Pdo == NULL)
        return STATUS_SUCCESS;
 
    /* Create new device object */
    DriverExtension = IoGetDriverObjectExtension(DriverObject, DriverObject);
    Status = IoCreateDevice(
        DriverObject,
        sizeof(SERMOUSE_DEVICE_EXTENSION),
        NULL,
        FILE_DEVICE_SERIAL_MOUSE_PORT,
        FILE_DEVICE_SECURE_OPEN,
        TRUE,
        &Fdo);
    if (!NT_SUCCESS(Status))
    {
        WARN_(SERMOUSE, "IoCreateDevice() failed with status 0x%08lx\n", Status);
        goto cleanup;
    }
 
    DeviceExtension = (PSERMOUSE_DEVICE_EXTENSION)Fdo->DeviceExtension;
    RtlZeroMemory(DeviceExtension, sizeof(SERMOUSE_DEVICE_EXTENSION));
    DeviceExtension->MouseType = mtNone;
    DeviceExtension->PnpState = dsStopped;
    DeviceExtension->DriverExtension = DriverExtension;
    KeInitializeEvent(&DeviceExtension->StopWorkerThreadEvent, NotificationEvent, FALSE);
    Status = IoAttachDeviceToDeviceStackSafe(Fdo, Pdo, &DeviceExtension->LowerDevice);
    if (!NT_SUCCESS(Status))
    {
        WARN_(SERMOUSE, "IoAttachDeviceToDeviceStackSafe() failed with status 0x%08lx\n", Status);
        goto cleanup;
    }
    if (DeviceExtension->LowerDevice->Flags & DO_POWER_PAGABLE)
        Fdo->Flags |= DO_POWER_PAGABLE;
    if (DeviceExtension->LowerDevice->Flags & DO_BUFFERED_IO)
        Fdo->Flags |= DO_BUFFERED_IO;
    if (DeviceExtension->LowerDevice->Flags & DO_DIRECT_IO)
        Fdo->Flags |= DO_DIRECT_IO;
    Fdo->Flags &= ~DO_DEVICE_INITIALIZING;
 
    return STATUS_SUCCESS;
 
cleanup:
    if (DeviceExtension)
    {
        if (DeviceExtension->LowerDevice)
            IoDetachDevice(DeviceExtension->LowerDevice);
    }
    if (Fdo)
    {
        IoDeleteDevice(Fdo);
    }
    return Status;
}

SermousePnp()

NTSTATUS NTAPI SermousePnp	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp
	)

Definition at line 143 of file fdo.c.

{
    ULONG MinorFunction;
    PIO_STACK_LOCATION Stack;
    ULONG_PTR Information = 0;
    NTSTATUS Status;
 
    Stack = IoGetCurrentIrpStackLocation(Irp);
    MinorFunction = Stack->MinorFunction;
    Information = Irp->IoStatus.Information;
 
    switch (MinorFunction)
    {
        /* FIXME: do all these minor functions
        IRP_MN_QUERY_REMOVE_DEVICE 0x1
        IRP_MN_REMOVE_DEVICE 0x2
        IRP_MN_CANCEL_REMOVE_DEVICE 0x3
        IRP_MN_STOP_DEVICE 0x4
        IRP_MN_QUERY_STOP_DEVICE 0x5
        IRP_MN_CANCEL_STOP_DEVICE 0x6
        IRP_MN_QUERY_DEVICE_RELATIONS / RemovalRelations (optional) 0x7
        IRP_MN_QUERY_INTERFACE (optional) 0x8
        IRP_MN_QUERY_CAPABILITIES (optional) 0x9
        IRP_MN_FILTER_RESOURCE_REQUIREMENTS (optional or required) 0xd
        IRP_MN_QUERY_PNP_DEVICE_STATE (optional) 0x14
        IRP_MN_DEVICE_USAGE_NOTIFICATION (required or optional) 0x16
        IRP_MN_SURPRISE_REMOVAL 0x17
        */
        case IRP_MN_START_DEVICE: /* 0x0 */
        {
            PSERMOUSE_DEVICE_EXTENSION DeviceExtension;
 
            TRACE_(SERMOUSE, "IRP_MJ_PNP / IRP_MN_START_DEVICE\n");
            Status = STATUS_UNSUCCESSFUL;
            DeviceExtension = DeviceObject->DeviceExtension;
 
            /* Call lower driver */
            if (IoForwardIrpSynchronously(DeviceExtension->LowerDevice, Irp))
            {
                Status = Irp->IoStatus.Status;
                if (NT_SUCCESS(Status))
                {
                    Status = SermouseStartDevice(DeviceObject, Irp);
                }
            }
            break;
        }
        case IRP_MN_QUERY_DEVICE_RELATIONS: /* 0x7 */
        {
            switch (Stack->Parameters.QueryDeviceRelations.Type)
            {
                case BusRelations:
                {
                    PDEVICE_RELATIONS DeviceRelations = NULL;
                    TRACE_(SERMOUSE, "IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_RELATIONS / TargetDeviceRelation\n");
 
                    DeviceRelations = ExAllocatePoolWithTag(PagedPool, FIELD_OFFSET(DEVICE_RELATIONS, Objects), SERMOUSE_TAG);
                    if (!DeviceRelations)
                    {
                        WARN_(SERMOUSE, "ExAllocatePoolWithTag() failed\n");
                        Status = STATUS_NO_MEMORY;
                    }
                    else
                    {
                        DeviceRelations->Count = 0;
                        Status = STATUS_SUCCESS;
                        Information = (ULONG_PTR)DeviceRelations;
                    }
                    break;
                }
                default:
                {
                    TRACE_(SERMOUSE, "IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_RELATIONS / Unknown type 0x%lx\n",
                        Stack->Parameters.QueryDeviceRelations.Type);
                    return ForwardIrpAndForget(DeviceObject, Irp);
                }
            }
            break;
        }
        default:
        {
            TRACE_(SERMOUSE, "IRP_MJ_PNP / unknown minor function 0x%lx\n", MinorFunction);
            return ForwardIrpAndForget(DeviceObject, Irp);
        }
    }
 
    Irp->IoStatus.Information = Information;
    Irp->IoStatus.Status = Status;
    IoCompleteRequest(Irp, IO_NO_INCREMENT);
    return Status;
}

SermouseStartDevice()

NTSTATUS NTAPI SermouseStartDevice	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp
	)

Definition at line 80 of file fdo.c.

{
    PSERMOUSE_DEVICE_EXTENSION DeviceExtension;
    SERMOUSE_MOUSE_TYPE MouseType;
    NTSTATUS Status;
 
    DeviceExtension = (PSERMOUSE_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
 
    ASSERT(DeviceExtension->PnpState == dsStopped);
    ASSERT(DeviceExtension->LowerDevice);
    MouseType = SermouseDetectLegacyDevice(DeviceExtension->LowerDevice);
    if (MouseType == mtNone)
    {
        WARN_(SERMOUSE, "No mouse connected to Fdo %p\n",
            DeviceExtension->LowerDevice);
        return STATUS_DEVICE_NOT_CONNECTED;
    }
 
    switch (MouseType)
    {
        case mtMicrosoft:
            DeviceExtension->AttributesInformation.MouseIdentifier = MOUSE_SERIAL_HARDWARE;
            DeviceExtension->AttributesInformation.NumberOfButtons = 2;
            break;
        case mtLogitech:
            DeviceExtension->AttributesInformation.MouseIdentifier = MOUSE_SERIAL_HARDWARE;
            DeviceExtension->AttributesInformation.NumberOfButtons = 3;
            break;
        case mtWheelZ:
            DeviceExtension->AttributesInformation.MouseIdentifier = WHEELMOUSE_SERIAL_HARDWARE;
            DeviceExtension->AttributesInformation.NumberOfButtons = 3;
            break;
        default:
            WARN_(SERMOUSE, "Unknown mouse type 0x%lx\n", MouseType);
            ASSERT(FALSE);
            return STATUS_UNSUCCESSFUL;
    }
 
    if (DeviceExtension->DriverExtension->NumberOfButtons != 0)
        /* Override the number of buttons */
        DeviceExtension->AttributesInformation.NumberOfButtons = DeviceExtension->DriverExtension->NumberOfButtons;
 
    DeviceExtension->AttributesInformation.SampleRate = 1200 / 8;
    DeviceExtension->AttributesInformation.InputDataQueueLength = 1;
    DeviceExtension->MouseType = MouseType;
    DeviceExtension->PnpState = dsStarted;
 
    /* Start read loop */
    Status = PsCreateSystemThread(
        &DeviceExtension->WorkerThreadHandle,
        (ACCESS_MASK)0L,
        NULL,
        NULL,
        NULL,
        SermouseDeviceWorker,
        DeviceObject);
 
    return Status;
}

Referenced by SermousePnp().