path: root/drivers/staging/epl/EplSdoAsndu.c

/****************************************************************************

  (c) SYSTEC electronic GmbH, D-07973 Greiz, August-Bebel-Str. 29
      www.systec-electronic.com

  Project:      openPOWERLINK

  Description:  source file for SDO/Asnd-Protocolabstractionlayer module

  License:

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:

    1. Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.

    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.

    3. Neither the name of SYSTEC electronic GmbH nor the names of its
       contributors may be used to endorse or promote products derived
       from this software without prior written permission. For written
       permission, please contact info@systec-electronic.com.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
    COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
    BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
    ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

    Severability Clause:

        If a provision of this License is or becomes illegal, invalid or
        unenforceable in any jurisdiction, that shall not affect:
        1. the validity or enforceability in that jurisdiction of any other
           provision of this License; or
        2. the validity or enforceability in other jurisdictions of that or
           any other provision of this License.

  -------------------------------------------------------------------------

                $RCSfile: EplSdoAsndu.c,v $

                $Author: D.Krueger $

                $Revision: 1.7 $  $Date: 2008/10/17 15:32:32 $

                $State: Exp $

                Build Environment:
                    GCC V3.4

  -------------------------------------------------------------------------

  Revision History:

  2006/07/07 k.t.:   start of the implementation

****************************************************************************/

#include "user/EplSdoAsndu.h"
#include "user/EplDlluCal.h"

#if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_SDO_ASND)) != 0)

/***************************************************************************/
/*                                                                         */
/*                                                                         */
/*          G L O B A L   D E F I N I T I O N S                            */
/*                                                                         */
/*                                                                         */
/***************************************************************************/

//---------------------------------------------------------------------------
// const defines
//---------------------------------------------------------------------------

#ifndef EPL_SDO_MAX_CONNECTION_ASND
#define EPL_SDO_MAX_CONNECTION_ASND 5
#endif

//---------------------------------------------------------------------------
// local types
//---------------------------------------------------------------------------

// instance table
typedef struct
{
    unsigned int            m_auiSdoAsndConnection[EPL_SDO_MAX_CONNECTION_ASND];
    tEplSequLayerReceiveCb  m_fpSdoAsySeqCb;


} tEplSdoAsndInstance;

//---------------------------------------------------------------------------
// modul globale vars
//---------------------------------------------------------------------------

static tEplSdoAsndInstance  SdoAsndInstance_g;

//---------------------------------------------------------------------------
// local function prototypes
//---------------------------------------------------------------------------

tEplKernel PUBLIC EplSdoAsnduCb(tEplFrameInfo * pFrameInfo_p);

/***************************************************************************/
/*                                                                         */
/*                                                                         */
/*          C L A S S  <EPL SDO-Asnd Protocolabstraction layer>            */
/*                                                                         */
/*                                                                         */
/***************************************************************************/
//
// Description: EPL SDO-Asnd Protocolabstraction layer
//
//
/***************************************************************************/



//=========================================================================//
//                                                                         //
//          P U B L I C   F U N C T I O N S                                //
//                                                                         //
//=========================================================================//

//---------------------------------------------------------------------------
//
// Function:    EplSdoAsnduInit
//
// Description: init first instance of the module
//
//
//
// Parameters:  pReceiveCb_p    =   functionpointer to Sdo-Sequence layer
//                                  callback-function
//
//
// Returns:     tEplKernel  = Errorcode
//
//
// State:
//
//---------------------------------------------------------------------------
tEplKernel PUBLIC EplSdoAsnduInit(tEplSequLayerReceiveCb fpReceiveCb_p)
{
tEplKernel  Ret;


    Ret = EplSdoAsnduAddInstance(fpReceiveCb_p);

return Ret;
}


//---------------------------------------------------------------------------
//
// Function:    EplSdoAsnduAddInstance
//
// Description: init additional instance of the module
//
//
//
// Parameters:  pReceiveCb_p    =   functionpointer to Sdo-Sequence layer
//                                  callback-function
//
//
// Returns:     tEplKernel  = Errorcode
//
//
// State:
//
//---------------------------------------------------------------------------
tEplKernel PUBLIC EplSdoAsnduAddInstance(tEplSequLayerReceiveCb fpReceiveCb_p)
{
tEplKernel  Ret;

    Ret = kEplSuccessful;

    // init control structure
    EPL_MEMSET(&SdoAsndInstance_g, 0x00, sizeof(SdoAsndInstance_g));

    // save pointer to callback-function
    if (fpReceiveCb_p != NULL)
    {
        SdoAsndInstance_g.m_fpSdoAsySeqCb = fpReceiveCb_p;
    }
    else
    {
        Ret = kEplSdoUdpMissCb;
    }

#if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_DLLU)) != 0)
    Ret = EplDlluCalRegAsndService(kEplDllAsndSdo,
                                   EplSdoAsnduCb,
                                   kEplDllAsndFilterLocal);
#endif

    return Ret;
}

//---------------------------------------------------------------------------
//
// Function:    EplSdoAsnduDelInstance
//
// Description: del instance of the module
//              del socket and del Listen-Thread
//
//
//
// Parameters:
//
//
// Returns:     tEplKernel  = Errorcode
//
//
// State:
//
//---------------------------------------------------------------------------
tEplKernel PUBLIC EplSdoAsnduDelInstance()
{
tEplKernel  Ret;

    Ret = kEplSuccessful;

#if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_DLLU)) != 0)
    // deregister callback function from DLL
    Ret = EplDlluCalRegAsndService(kEplDllAsndSdo,
                                   NULL,
                                   kEplDllAsndFilterNone);
#endif

return Ret;
}


//---------------------------------------------------------------------------
//
// Function:    EplSdoAsnduInitCon
//
// Description: init a new connect
//
//
//
// Parameters:  pSdoConHandle_p = pointer for the new connection handle
//              uiTargetNodeId_p = NodeId of the target node
//
//
// Returns:     tEplKernel  = Errorcode
//
//
// State:
//
//---------------------------------------------------------------------------
tEplKernel PUBLIC EplSdoAsnduInitCon(tEplSdoConHdl*  pSdoConHandle_p,
                               unsigned int    uiTargetNodeId_p)
{
tEplKernel      Ret;
unsigned int    uiCount;
unsigned int    uiFreeCon;
unsigned int*   puiConnection;

    Ret = kEplSuccessful;

    if ((uiTargetNodeId_p == EPL_C_ADR_INVALID)
        || (uiTargetNodeId_p >= EPL_C_ADR_BROADCAST))
    {
        Ret = kEplSdoAsndInvalidNodeId;
        goto Exit;
    }

    // get free entry in control structure
    uiCount = 0;
    uiFreeCon = EPL_SDO_MAX_CONNECTION_ASND;
    puiConnection = &SdoAsndInstance_g.m_auiSdoAsndConnection[0];
    while(uiCount < EPL_SDO_MAX_CONNECTION_ASND)
    {
        if (*puiConnection == uiTargetNodeId_p)
        {   // existing connection to target node found
            // save handle for higher layer
            *pSdoConHandle_p = (uiCount | EPL_SDO_ASND_HANDLE );

            goto Exit;
        }
        else if (*puiConnection == 0)
        {   // free entry-> save target nodeId
            uiFreeCon = uiCount;
        }
        uiCount++;
        puiConnection++;
    }

    if (uiFreeCon == EPL_SDO_MAX_CONNECTION_ASND)
    {
        // no free connection
        Ret = kEplSdoAsndNoFreeHandle;
    }
    else
    {
        puiConnection = &SdoAsndInstance_g.m_auiSdoAsndConnection[uiFreeCon];
        *puiConnection = uiTargetNodeId_p;
        // save handle for higher layer
        *pSdoConHandle_p = (uiFreeCon | EPL_SDO_ASND_HANDLE );

        goto Exit;
    }

Exit:
    return Ret;
}

//---------------------------------------------------------------------------
//
// Function:    EplSdoAsnduSendData
//
// Description: send data using exisiting connection
//
//
//
// Parameters:  SdoConHandle_p  = connection handle
//              pSrcData_p      = pointer to data
//              dwDataSize_p    = number of databyte
//                                  -> without asnd-header!!!
//
// Returns:     tEplKernel  = Errorcode
//
//
// State:
//
//---------------------------------------------------------------------------
tEplKernel PUBLIC EplSdoAsnduSendData(tEplSdoConHdl       SdoConHandle_p,
                                    tEplFrame *          pSrcData_p,
                                    DWORD                dwDataSize_p)
{
tEplKernel      Ret;
unsigned int    uiArray;
tEplFrameInfo   FrameInfo;

    Ret = kEplSuccessful;

    uiArray = (SdoConHandle_p & ~EPL_SDO_ASY_HANDLE_MASK);

    if(uiArray > EPL_SDO_MAX_CONNECTION_ASND)
    {
        Ret = kEplSdoAsndInvalidHandle;
        goto Exit;
    }

    // fillout Asnd header
    // own node id not needed -> filled by DLL

    // set message type
    AmiSetByteToLe(&pSrcData_p->m_le_bMessageType, (BYTE)kEplMsgTypeAsnd); // ASnd == 0x06
    // target node id
    AmiSetByteToLe(&pSrcData_p->m_le_bDstNodeId, (BYTE) SdoAsndInstance_g.m_auiSdoAsndConnection[uiArray]);
    // set source-nodeid (filled by DLL 0)
    AmiSetByteToLe(&pSrcData_p->m_le_bSrcNodeId, 0x00);

    // calc size
    dwDataSize_p += EPL_ASND_HEADER_SIZE;

    // send function of DLL
    FrameInfo.m_uiFrameSize = dwDataSize_p;
    FrameInfo.m_pFrame = pSrcData_p;
    EPL_MEMSET(&FrameInfo.m_NetTime , 0x00, sizeof(tEplNetTime));
#if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_DLLU)) != 0)
    Ret = EplDlluCalAsyncSend(&FrameInfo,kEplDllAsyncReqPrioGeneric);
#endif

Exit:
    return Ret;

}

//---------------------------------------------------------------------------
//
// Function:    EplSdoAsnduDelCon
//
// Description: delete connection from intern structure
//
//
//
// Parameters:  SdoConHandle_p  = connection handle
//
// Returns:     tEplKernel  = Errorcode
//
//
// State:
//
//---------------------------------------------------------------------------
tEplKernel PUBLIC EplSdoAsnduDelCon(tEplSdoConHdl SdoConHandle_p)
{
tEplKernel  Ret;
unsigned int    uiArray;

    Ret = kEplSuccessful;


    uiArray = (SdoConHandle_p & ~EPL_SDO_ASY_HANDLE_MASK);
    // check parameter
    if(uiArray > EPL_SDO_MAX_CONNECTION_ASND)
    {
        Ret = kEplSdoAsndInvalidHandle;
        goto Exit;
    }

    // set target nodeId to 0
    SdoAsndInstance_g.m_auiSdoAsndConnection[uiArray] = 0;

Exit:
    return Ret;
}

//=========================================================================//
//                                                                         //
//          P R I V A T E   F U N C T I O N S                              //
//                                                                         //
//=========================================================================//

//---------------------------------------------------------------------------
//
// Function:    EplSdoAsnduCb
//
// Description: callback function for SDO ASnd frames
//
//
//
// Parameters:      pFrameInfo_p = Frame with SDO payload
//
//
// Returns:         tEplKernel = errorcode
//
//
// State:
//
//---------------------------------------------------------------------------
tEplKernel PUBLIC EplSdoAsnduCb(tEplFrameInfo * pFrameInfo_p)
{
tEplKernel      Ret = kEplSuccessful;
unsigned int    uiCount;
unsigned int*   puiConnection;
unsigned int    uiNodeId;
unsigned int    uiFreeEntry = 0xFFFF;
tEplSdoConHdl   SdoConHdl;
tEplFrame*      pFrame;

    pFrame = pFrameInfo_p->m_pFrame;

    uiNodeId = AmiGetByteFromLe(&pFrame->m_le_bSrcNodeId);

    // search corresponding entry in control structure
    uiCount = 0;
    puiConnection = &SdoAsndInstance_g.m_auiSdoAsndConnection[0];
    while (uiCount < EPL_SDO_MAX_CONNECTION_ASND)
    {
        if (uiNodeId == *puiConnection)
        {
            break;
        }
        else if ((*puiConnection == 0)
            && (uiFreeEntry == 0xFFFF))
        {   // free entry
            uiFreeEntry = uiCount;
        }
        uiCount++;
        puiConnection++;
    }

    if (uiCount == EPL_SDO_MAX_CONNECTION_ASND)
    {
        if (uiFreeEntry != 0xFFFF)
        {
            puiConnection = &SdoAsndInstance_g.m_auiSdoAsndConnection[uiFreeEntry];
            *puiConnection = uiNodeId;
            uiCount = uiFreeEntry;
        }
        else
        {
            EPL_DBGLVL_SDO_TRACE0("EplSdoAsnduCb(): no free handle\n");
            goto Exit;
        }
    }
//    if (uiNodeId == *puiConnection)
    {   // entry found or created
        SdoConHdl = (uiCount | EPL_SDO_ASND_HANDLE );

        SdoAsndInstance_g.m_fpSdoAsySeqCb(SdoConHdl, &pFrame->m_Data.m_Asnd.m_Payload.m_SdoSequenceFrame, (pFrameInfo_p->m_uiFrameSize - 18));
    }

Exit:
    return Ret;

}


#endif // end of #if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_SDO_ASND)) != 0)
// EOF