fxdeviceinitkm.cpp

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/*++
 
Copyright (c) Microsoft Corporation
 
Module Name:
 
    FxDeviceInitKm.cpp
 
Abstract:
    Internals for WDFDEVICE_INIT
 
Author:
 
 
 
 
Environment:
 
    Kernel mode only
 
Revision History:
 
--*/
 
#include "coreprivshared.hpp"
 
extern "C" {
// #include "FxDeviceInitKm.tmh"
}
 
VOID
WDFDEVICE_INIT::SetPdo(
    __in FxDevice* Parent
    )
{
    InitType = FxDeviceInitTypePdo;
 
    //
    // Remember the parent so we can store it later in WdfDeviceCreate
    //
    Pdo.Parent = Parent;
 
    //
    // PDOs *must* have a name.  By setting this flag, the driver writer
    // does not need to know this
    //
    Characteristics |= FILE_AUTOGENERATED_DEVICE_NAME;
 
    //
    // By default, PDOs are not power pageable b/c they do not know how the
    // stack above them will work.  For a "closed" system where the bus driver
    // knows the stack be loaded on its PDO, this may not be true and it
    // can use WdfDeviceInitSetPowerPageable to set it back.
    //
    // In all current shipping OS's, if the parent is power pageable, the
    // child must be power pagable as well.
    //
    if (Parent->IsPowerPageableCapable() == FALSE) {
        PowerPageable = FALSE;
    }
}
 
VOID
WDFDEVICE_INIT::AssignIoType(
    _In_ PWDF_IO_TYPE_CONFIG IoTypeConfig
    )
{
    NTSTATUS status;
 
    if (IoTypeConfig->ReadWriteIoType == WdfDeviceIoUndefined ||
        IoTypeConfig->ReadWriteIoType > WdfDeviceIoDirect) {
        status= STATUS_INVALID_PARAMETER;
        DoTraceLevelMessage(
            DriverGlobals, TRACE_LEVEL_ERROR, TRACINGDEVICE,
            "Out of range Read/Write IoType %d, %!status!",
            IoTypeConfig->ReadWriteIoType, status);
        FxVerifierDbgBreakPoint(DriverGlobals);
        return;
    }
 
    ReadWriteIoType = IoTypeConfig->ReadWriteIoType;
 
    return;
}