fxusbrequestcontext.hpp

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/*++
 
Copyright (c) Microsoft Corporation
 
Module Name:
 
    FxUsbRequestContext.hpp
 
Abstract:
 
Author:
 
Environment:
 
    kernel mode only
 
Revision History:
 
--*/
 
#ifndef _FXUSBREQUESTCONTEXT_H_
#define _FXUSBREQUESTCONTEXT_H_
 
#if (FX_CORE_MODE == FX_CORE_USER_MODE)
#include <umusb.h>
#endif
 
struct FxUsbRequestContext : public FxRequestContext {
    FxUsbRequestContext(
        __in FX_REQUEST_CONTEXT_TYPE Type
        ) :
        FxRequestContext(Type)
    {
        InitUsbParameters();
        SetUsbType(WdfUsbRequestTypeNoFormat);
    }
 
    virtual
    USBD_STATUS
    GetUsbdStatus(
        VOID
        ) = 0;
 
    virtual
    VOID
    CopyParameters(
        __in FxRequestBase* Request
        )
    {
        m_UsbParameters.UsbdStatus = GetUsbdStatus();
        FxRequestContext::CopyParameters(Request); // __super call
    }
 
    VOID
    SetUsbType(
        __in WDF_USB_REQUEST_TYPE Type
        )
    {
        //
        // The completion params are set every time we set the type
        //
        m_CompletionParams.Type = WdfRequestTypeUsb;
        m_CompletionParams.Parameters.Usb.Completion = &m_UsbParameters;
 
        m_UsbParameters.Type = Type;
    }
 
    VOID
    __inline
    InitUsbParameters(
        VOID
        )
    {
        RtlZeroMemory(&m_UsbParameters, sizeof(m_UsbParameters));
    }
 
public:
    WDF_USB_REQUEST_COMPLETION_PARAMS m_UsbParameters;
 
#if (FX_CORE_MODE == FX_CORE_USER_MODE)
    //
    // UMURB we send to the WUDF USB Dispatcher. The dispatcher
    // extracts the encoded data and passes it to WinUsb APIs.
    //
    UMURB m_UmUrb;
#endif
};
 
#endif // _FXUSBREQUESTCONTEXT_H_