drivers/staging/epl/EplEventu.c - kernel/windcharger - Git at Google

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

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

   Project:      openPOWERLINK

   Description:  source file for Epl-Userspace-Event-Modul

   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: EplEventu.c,v $

                 $Author: D.Krueger $

                 $Revision: 1.8 $  $Date: 2008/11/17 16:40:39 $

                 $State: Exp $

                 Build Environment:
                     GCC V3.4

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

   Revision History:

   2006/06/20 k.t.:   start of the implementation

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

 #include "user/EplEventu.h"
 #include "user/EplNmtu.h"
 #include "user/EplNmtMnu.h"
 #include "user/EplSdoAsySequ.h"
 #include "user/EplDlluCal.h"
 #include "user/EplLedu.h"
 #include "Benchmark.h"

 #ifdef EPL_NO_FIFO
 #include "kernel/EplEventk.h"
 #else
 #include "SharedBuff.h"
 #endif

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

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

 // TracePoint support for realtime-debugging
 #ifdef _DBG_TRACE_POINTS_
 void TgtDbgSignalTracePoint(u8 bTracePointNumber_p);
 void TgtDbgPostTraceValue(u32 dwTraceValue_p);
 #define TGT_DBG_SIGNAL_TRACE_POINT(p)   TgtDbgSignalTracePoint(p)
 #define TGT_DBG_POST_TRACE_VALUE(v)     TgtDbgPostTraceValue(v)
 #else
 #define TGT_DBG_SIGNAL_TRACE_POINT(p)
 #define TGT_DBG_POST_TRACE_VALUE(v)
 #endif

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

 typedef struct {
 #ifndef EPL_NO_FIFO
 	tShbInstance m_pShbKernelToUserInstance;
 	tShbInstance m_pShbUserToKernelInstance;
 #endif
 	tEplProcessEventCb m_pfnApiProcessEventCb;

 } tEplEventuInstance;

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

 //#ifndef EPL_NO_FIFO
 static tEplEventuInstance EplEventuInstance_g;
 //#endif

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

 #ifndef EPL_NO_FIFO
 // callback function for incomming events
 static void EplEventuRxSignalHandlerCb(tShbInstance pShbRxInstance_p,
 				       unsigned long ulDataSize_p);
 #endif

 /***************************************************************************/
 /*                                                                         */
 /*                                                                         */
 /*          C L A S S  <Epl-User-Event>                                    */
 /*                                                                         */
 /*                                                                         */
 /***************************************************************************/
 //
 // Description:
 //
 //
 /***************************************************************************/

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

 //---------------------------------------------------------------------------
 //
 // Function:    EplEventuInit
 //
 // Description: function initialize the first instance
 //
 //
 //
 // Parameters:  pfnApiProcessEventCb_p  = function pointer for API event callback
 //
 //
 // Returns:      tEpKernel  = errorcode
 //
 //
 // State:
 //
 //---------------------------------------------------------------------------
 tEplKernel EplEventuInit(tEplProcessEventCb pfnApiProcessEventCb_p)
 {
 	tEplKernel Ret;

 	Ret = EplEventuAddInstance(pfnApiProcessEventCb_p);

 	return Ret;

 }

 //---------------------------------------------------------------------------
 //
 // Function:    EplEventuAddInstance
 //
 // Description: function add one more instance
 //
 //
 //
 // Parameters:  pfnApiProcessEventCb_p  = function pointer for API event callback
 //
 //
 // Returns:      tEpKernel  = errorcode
 //
 //
 // State:
 //
 //---------------------------------------------------------------------------
 tEplKernel EplEventuAddInstance(tEplProcessEventCb pfnApiProcessEventCb_p)
 {
 	tEplKernel Ret;
 #ifndef EPL_NO_FIFO
 	tShbError ShbError;
 	unsigned int fShbNewCreated;
 #endif

 	Ret = kEplSuccessful;

 	// init instance variables
 	EplEventuInstance_g.m_pfnApiProcessEventCb = pfnApiProcessEventCb_p;

 #ifndef EPL_NO_FIFO
 	// init shared loop buffer
 	// kernel -> user
 	ShbError = ShbCirAllocBuffer(EPL_EVENT_SIZE_SHB_KERNEL_TO_USER,
 				     EPL_EVENT_NAME_SHB_KERNEL_TO_USER,
 				     &EplEventuInstance_g.
 				     m_pShbKernelToUserInstance,
 				     &fShbNewCreated);
 	if (ShbError != kShbOk) {
 		EPL_DBGLVL_EVENTK_TRACE1
 		    ("EplEventuAddInstance(): ShbCirAllocBuffer(K2U) -> 0x%X\n",
 		     ShbError);
 		Ret = kEplNoResource;
 		goto Exit;
 	}

 	// user -> kernel
 	ShbError = ShbCirAllocBuffer(EPL_EVENT_SIZE_SHB_USER_TO_KERNEL,
 				     EPL_EVENT_NAME_SHB_USER_TO_KERNEL,
 				     &EplEventuInstance_g.
 				     m_pShbUserToKernelInstance,
 				     &fShbNewCreated);
 	if (ShbError != kShbOk) {
 		EPL_DBGLVL_EVENTK_TRACE1
 		    ("EplEventuAddInstance(): ShbCirAllocBuffer(U2K) -> 0x%X\n",
 		     ShbError);
 		Ret = kEplNoResource;
 		goto Exit;
 	}
 	// register eventhandler
 	ShbError =
 	    ShbCirSetSignalHandlerNewData(EplEventuInstance_g.
 					  m_pShbKernelToUserInstance,
 					  EplEventuRxSignalHandlerCb,
 					  kShbPriorityNormal);
 	if (ShbError != kShbOk) {
 		EPL_DBGLVL_EVENTK_TRACE1
 		    ("EplEventuAddInstance(): ShbCirSetSignalHandlerNewData(K2U) -> 0x%X\n",
 		     ShbError);
 		Ret = kEplNoResource;
 		goto Exit;
 	}

       Exit:
 #endif

 	return Ret;

 }

 //---------------------------------------------------------------------------
 //
 // Function:    EplEventuDelInstance
 //
 // Description: function delete instance an free the bufferstructure
 //
 //
 //
 // Parameters:
 //
 //
 // Returns:      tEpKernel  = errorcode
 //
 //
 // State:
 //
 //---------------------------------------------------------------------------
 tEplKernel EplEventuDelInstance(void)
 {
 	tEplKernel Ret;
 #ifndef EPL_NO_FIFO
 	tShbError ShbError;
 #endif

 	Ret = kEplSuccessful;

 #ifndef EPL_NO_FIFO
 	// set eventhandler to NULL
 	ShbError =
 	    ShbCirSetSignalHandlerNewData(EplEventuInstance_g.
 					  m_pShbKernelToUserInstance, NULL,
 					  kShbPriorityNormal);
 	if (ShbError != kShbOk) {
 		EPL_DBGLVL_EVENTK_TRACE1
 		    ("EplEventuDelInstance(): ShbCirSetSignalHandlerNewData(K2U) -> 0x%X\n",
 		     ShbError);
 		Ret = kEplNoResource;
 	}
 	// free buffer User -> Kernel
 	ShbError =
 	    ShbCirReleaseBuffer(EplEventuInstance_g.m_pShbUserToKernelInstance);
 	if ((ShbError != kShbOk) && (ShbError != kShbMemUsedByOtherProcs)) {
 		EPL_DBGLVL_EVENTK_TRACE1
 		    ("EplEventuDelInstance(): ShbCirReleaseBuffer(U2K) -> 0x%X\n",
 		     ShbError);
 		Ret = kEplNoResource;
 	} else {
 		EplEventuInstance_g.m_pShbUserToKernelInstance = NULL;
 	}

 	// free buffer  Kernel -> User
 	ShbError =
 	    ShbCirReleaseBuffer(EplEventuInstance_g.m_pShbKernelToUserInstance);
 	if ((ShbError != kShbOk) && (ShbError != kShbMemUsedByOtherProcs)) {
 		EPL_DBGLVL_EVENTK_TRACE1
 		    ("EplEventuDelInstance(): ShbCirReleaseBuffer(K2U) -> 0x%X\n",
 		     ShbError);
 		Ret = kEplNoResource;
 	} else {
 		EplEventuInstance_g.m_pShbKernelToUserInstance = NULL;
 	}

 #endif

 	return Ret;

 }

 //---------------------------------------------------------------------------
 //
 // Function:    EplEventuProcess
 //
 // Description: Kernelthread that dispatches events in kernelspace
 //
 //
 //
 // Parameters:  pEvent_p = pointer to event-structur from buffer
 //
 //
 // Returns:      tEpKernel  = errorcode
 //
 //
 // State:
 //
 //---------------------------------------------------------------------------
 tEplKernel EplEventuProcess(tEplEvent *pEvent_p)
 {
 	tEplKernel Ret;
 	tEplEventSource EventSource;

 	Ret = kEplSuccessful;

 	// check m_EventSink
 	switch (pEvent_p->m_EventSink) {
 		// NMT-User-Module
 	case kEplEventSinkNmtu:
 		{
 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMTU)) != 0)
 			Ret = EplNmtuProcessEvent(pEvent_p);
 			if ((Ret != kEplSuccessful) && (Ret != kEplShutdown)) {
 				EventSource = kEplEventSourceNmtu;

 				// Error event for API layer
 				EplEventuPostError(kEplEventSourceEventu,
 						   Ret,
 						   sizeof(EventSource),
 						   &EventSource);
 			}
 #endif
 			break;
 		}

 #if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 		// NMT-MN-User-Module
 	case kEplEventSinkNmtMnu:
 		{
 			Ret = EplNmtMnuProcessEvent(pEvent_p);
 			if ((Ret != kEplSuccessful) && (Ret != kEplShutdown)) {
 				EventSource = kEplEventSourceNmtMnu;

 				// Error event for API layer
 				EplEventuPostError(kEplEventSourceEventu,
 						   Ret,
 						   sizeof(EventSource),
 						   &EventSource);
 			}
 			break;
 		}
 #endif

 #if ((((EPL_MODULE_INTEGRATION) & (EPL_MODULE_SDOC)) != 0)   \
      || (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_SDOS)) != 0))
 		// events for asynchronus SDO Sequence Layer
 	case kEplEventSinkSdoAsySeq:
 		{
 			Ret = EplSdoAsySeqProcessEvent(pEvent_p);
 			if ((Ret != kEplSuccessful) && (Ret != kEplShutdown)) {
 				EventSource = kEplEventSourceSdoAsySeq;

 				// Error event for API layer
 				EplEventuPostError(kEplEventSourceEventu,
 						   Ret,
 						   sizeof(EventSource),
 						   &EventSource);
 			}
 			break;
 		}
 #endif

 		// LED user part module
 	case kEplEventSinkLedu:
 		{
 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_LEDU)) != 0)
 			Ret = EplLeduProcessEvent(pEvent_p);
 			if ((Ret != kEplSuccessful) && (Ret != kEplShutdown)) {
 				EventSource = kEplEventSourceLedu;

 				// Error event for API layer
 				EplEventuPostError(kEplEventSourceEventu,
 						   Ret,
 						   sizeof(EventSource),
 						   &EventSource);
 			}
 #endif
 			break;
 		}

 		// event for EPL api
 	case kEplEventSinkApi:
 		{
 			if (EplEventuInstance_g.m_pfnApiProcessEventCb != NULL) {
 				Ret =
 				    EplEventuInstance_g.
 				    m_pfnApiProcessEventCb(pEvent_p);
 				if ((Ret != kEplSuccessful)
 				    && (Ret != kEplShutdown)) {
 					EventSource = kEplEventSourceEplApi;

 					// Error event for API layer
 					EplEventuPostError
 					    (kEplEventSourceEventu, Ret,
 					     sizeof(EventSource), &EventSource);
 				}
 			}
 			break;

 		}

 	case kEplEventSinkDlluCal:
 		{
 			Ret = EplDlluCalProcess(pEvent_p);
 			if ((Ret != kEplSuccessful) && (Ret != kEplShutdown)) {
 				EventSource = kEplEventSourceDllu;

 				// Error event for API layer
 				EplEventuPostError(kEplEventSourceEventu,
 						   Ret,
 						   sizeof(EventSource),
 						   &EventSource);
 			}
 			break;

 		}

 	case kEplEventSinkErru:
 		{
 			/*
 			   Ret = EplErruProcess(pEvent_p);
 			   if ((Ret != kEplSuccessful) && (Ret != kEplShutdown))
 			   {
 			   EventSource = kEplEventSourceErru;

 			   // Error event for API layer
 			   EplEventuPostError(kEplEventSourceEventu,
 			   Ret,
 			   sizeof(EventSource),
 			   &EventSource);
 			   }
 			 */
 			break;

 		}

 		// unknown sink
 	default:
 		{
 			Ret = kEplEventUnknownSink;
 		}

 	}			// end of switch(pEvent_p->m_EventSink)

 	return Ret;

 }

 //---------------------------------------------------------------------------
 //
 // Function:    EplEventuPost
 //
 // Description: post events from userspace
 //
 //
 //
 // Parameters:  pEvent_p = pointer to event-structur from buffer
 //
 //
 // Returns:      tEpKernel  = errorcode
 //
 //
 // State:
 //
 //---------------------------------------------------------------------------
 tEplKernel EplEventuPost(tEplEvent *pEvent_p)
 {
 	tEplKernel Ret;
 #ifndef EPL_NO_FIFO
 	tShbError ShbError;
 	tShbCirChunk ShbCirChunk;
 	unsigned long ulDataSize;
 	unsigned int fBufferCompleted;
 #endif

 	Ret = kEplSuccessful;

 #ifndef EPL_NO_FIFO
 	// 2006/08/03 d.k.: Event and argument are posted as separate chunks to the event queue.
 	ulDataSize =
 	    sizeof(tEplEvent) +
 	    ((pEvent_p->m_pArg != NULL) ? pEvent_p->m_uiSize : 0);
 #endif

 	// decide in which buffer the event have to write
 	switch (pEvent_p->m_EventSink) {
 		// kernelspace modules
 	case kEplEventSinkSync:
 	case kEplEventSinkNmtk:
 	case kEplEventSinkDllk:
 	case kEplEventSinkDllkCal:
 	case kEplEventSinkPdok:
 	case kEplEventSinkErrk:
 		{
 #ifndef EPL_NO_FIFO
 			// post message
 			ShbError =
 			    ShbCirAllocDataBlock(EplEventuInstance_g.
 						 m_pShbUserToKernelInstance,
 						 &ShbCirChunk, ulDataSize);
 			if (ShbError != kShbOk) {
 				EPL_DBGLVL_EVENTK_TRACE1
 				    ("EplEventuPost(): ShbCirAllocDataBlock(U2K) -> 0x%X\n",
 				     ShbError);
 				Ret = kEplEventPostError;
 				goto Exit;
 			}
 			ShbError =
 			    ShbCirWriteDataChunk(EplEventuInstance_g.
 						 m_pShbUserToKernelInstance,
 						 &ShbCirChunk, pEvent_p,
 						 sizeof(tEplEvent),
 						 &fBufferCompleted);
 			if (ShbError != kShbOk) {
 				EPL_DBGLVL_EVENTK_TRACE1
 				    ("EplEventuPost(): ShbCirWriteDataChunk(U2K) -> 0x%X\n",
 				     ShbError);
 				Ret = kEplEventPostError;
 				goto Exit;
 			}
 			if (fBufferCompleted == FALSE) {
 				ShbError =
 				    ShbCirWriteDataChunk(EplEventuInstance_g.
 							 m_pShbUserToKernelInstance,
 							 &ShbCirChunk,
 							 pEvent_p->m_pArg,
 							 (unsigned long)
 							 pEvent_p->m_uiSize,
 							 &fBufferCompleted);
 				if ((ShbError != kShbOk)
 				    || (fBufferCompleted == FALSE)) {
 					EPL_DBGLVL_EVENTK_TRACE1
 					    ("EplEventuPost(): ShbCirWriteDataChunk2(U2K) -> 0x%X\n",
 					     ShbError);
 					Ret = kEplEventPostError;
 					goto Exit;
 				}
 			}
 #else
 			Ret = EplEventkProcess(pEvent_p);
 #endif

 			break;
 		}

 		// userspace modules
 	case kEplEventSinkNmtMnu:
 	case kEplEventSinkNmtu:
 	case kEplEventSinkSdoAsySeq:
 	case kEplEventSinkApi:
 	case kEplEventSinkDlluCal:
 	case kEplEventSinkErru:
 	case kEplEventSinkLedu:
 		{
 #ifndef EPL_NO_FIFO
 			// post message
 			ShbError =
 			    ShbCirAllocDataBlock(EplEventuInstance_g.
 						 m_pShbKernelToUserInstance,
 						 &ShbCirChunk, ulDataSize);
 			if (ShbError != kShbOk) {
 				EPL_DBGLVL_EVENTK_TRACE1
 				    ("EplEventuPost(): ShbCirAllocDataBlock(K2U) -> 0x%X\n",
 				     ShbError);
 				Ret = kEplEventPostError;
 				goto Exit;
 			}
 			ShbError =
 			    ShbCirWriteDataChunk(EplEventuInstance_g.
 						 m_pShbKernelToUserInstance,
 						 &ShbCirChunk, pEvent_p,
 						 sizeof(tEplEvent),
 						 &fBufferCompleted);
 			if (ShbError != kShbOk) {
 				EPL_DBGLVL_EVENTK_TRACE1
 				    ("EplEventuPost(): ShbCirWriteDataChunk(K2U) -> 0x%X\n",
 				     ShbError);
 				Ret = kEplEventPostError;
 				goto Exit;
 			}
 			if (fBufferCompleted == FALSE) {
 				ShbError =
 				    ShbCirWriteDataChunk(EplEventuInstance_g.
 							 m_pShbKernelToUserInstance,
 							 &ShbCirChunk,
 							 pEvent_p->m_pArg,
 							 (unsigned long)
 							 pEvent_p->m_uiSize,
 							 &fBufferCompleted);
 				if ((ShbError != kShbOk)
 				    || (fBufferCompleted == FALSE)) {
 					EPL_DBGLVL_EVENTK_TRACE1
 					    ("EplEventuPost(): ShbCirWriteDataChunk2(K2U) -> 0x%X\n",
 					     ShbError);
 					Ret = kEplEventPostError;
 					goto Exit;
 				}
 			}
 #else
 			Ret = EplEventuProcess(pEvent_p);
 #endif

 			break;
 		}

 	default:
 		{
 			Ret = kEplEventUnknownSink;
 		}

 	}			// end of switch(pEvent_p->m_EventSink)

 #ifndef EPL_NO_FIFO
       Exit:
 #endif
 	return Ret;

 }

 //---------------------------------------------------------------------------
 //
 // Function:    EplEventuPostError
 //
 // Description: post errorevent from userspace
 //
 //
 //
 // Parameters:  EventSource_p   = source-module of the errorevent
 //              EplError_p     = code of occured error
 //              uiArgSize_p     = size of the argument
 //              pArg_p          = pointer to the argument
 //
 //
 // Returns:      tEpKernel  = errorcode
 //
 //
 // State:
 //
 //---------------------------------------------------------------------------
 tEplKernel EplEventuPostError(tEplEventSource EventSource_p,
 			      tEplKernel EplError_p,
 			      unsigned int uiArgSize_p, void *pArg_p)
 {
 	tEplKernel Ret;
 	u8 abBuffer[EPL_MAX_EVENT_ARG_SIZE];
 	tEplEventError *pEventError = (tEplEventError *) abBuffer;
 	tEplEvent EplEvent;

 	Ret = kEplSuccessful;

 	// create argument
 	pEventError->m_EventSource = EventSource_p;
 	pEventError->m_EplError = EplError_p;
 	EPL_MEMCPY(&pEventError->m_Arg, pArg_p, uiArgSize_p);

 	// create event
 	EplEvent.m_EventType = kEplEventTypeError;
 	EplEvent.m_EventSink = kEplEventSinkApi;
 	EPL_MEMSET(&EplEvent.m_NetTime, 0x00, sizeof(EplEvent.m_NetTime));
 	EplEvent.m_uiSize =
 	    (sizeof(EventSource_p) + sizeof(EplError_p) + uiArgSize_p);
 	EplEvent.m_pArg = &abBuffer[0];

 	// post errorevent
 	Ret = EplEventuPost(&EplEvent);

 	return Ret;
 }

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

 //---------------------------------------------------------------------------
 //
 // Function:    EplEventuRxSignalHandlerCb()
 //
 // Description: Callback-function for evets from kernelspace
 //
 //
 //
 // Parameters:  pShbRxInstance_p    = Instance-pointer for buffer
 //              ulDataSize_p        = size of data
 //
 //
 // Returns: void
 //
 //
 // State:
 //
 //---------------------------------------------------------------------------
 #ifndef EPL_NO_FIFO
 static void EplEventuRxSignalHandlerCb(tShbInstance pShbRxInstance_p,
 				       unsigned long ulDataSize_p)
 {
 	tEplEvent *pEplEvent;
 	tShbError ShbError;
 //unsigned long   ulBlockCount;
 //unsigned long   ulDataSize;
 	u8 abDataBuffer[sizeof(tEplEvent) + EPL_MAX_EVENT_ARG_SIZE];
 	// d.k.: abDataBuffer contains the complete tEplEvent structure
 	//       and behind this the argument

 	TGT_DBG_SIGNAL_TRACE_POINT(21);

 // d.k. not needed because it is already done in SharedBuff
 /*    do
     {
         BENCHMARK_MOD_28_SET(1);    // 4 µs until reset
         // get messagesize
         ShbError = ShbCirGetReadDataSize (pShbRxInstance_p, &ulDataSize);
         if(ShbError != kShbOk)
         {
             // error goto exit
             goto Exit;
         }

         BENCHMARK_MOD_28_RESET(1);  // 14 µs until set
 */
 	// copy data from event queue
 	ShbError = ShbCirReadDataBlock(pShbRxInstance_p,
 				       &abDataBuffer[0],
 				       sizeof(abDataBuffer), &ulDataSize_p);
 	if (ShbError != kShbOk) {
 		// error goto exit
 		goto Exit;
 	}
 	// resolve the pointer to the event structure
 	pEplEvent = (tEplEvent *) abDataBuffer;
 	// set Datasize
 	pEplEvent->m_uiSize = (ulDataSize_p - sizeof(tEplEvent));
 	if (pEplEvent->m_uiSize > 0) {
 		// set pointer to argument
 		pEplEvent->m_pArg = &abDataBuffer[sizeof(tEplEvent)];
 	} else {
 		//set pointer to NULL
 		pEplEvent->m_pArg = NULL;
 	}

 	BENCHMARK_MOD_28_SET(1);
 	// call processfunction
 	EplEventuProcess(pEplEvent);

 	BENCHMARK_MOD_28_RESET(1);
 	// read number of left messages to process
 // d.k. not needed because it is already done in SharedBuff
 /*        ShbError = ShbCirGetReadBlockCount (pShbRxInstance_p, &ulBlockCount);
         if (ShbError != kShbOk)
         {
             // error goto exit
             goto Exit;
         }
     } while (ulBlockCount > 0);
 */
       Exit:
 	return;
 }
 #endif

 // EOF
	/****************************************************************************

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

	Project: openPOWERLINK

	Description: source file for Epl-Userspace-Event-Modul

	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: EplEventu.c,v $

	$Author: D.Krueger $

	$Revision: 1.8 $ $Date: 2008/11/17 16:40:39 $

	$State: Exp $

	Build Environment:
	GCC V3.4

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

	Revision History:

	2006/06/20 k.t.: start of the implementation

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

	#include "user/EplEventu.h"
	#include "user/EplNmtu.h"
	#include "user/EplNmtMnu.h"
	#include "user/EplSdoAsySequ.h"
	#include "user/EplDlluCal.h"
	#include "user/EplLedu.h"
	#include "Benchmark.h"

	#ifdef EPL_NO_FIFO
	#include "kernel/EplEventk.h"
	#else
	#include "SharedBuff.h"
	#endif

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

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

	// TracePoint support for realtime-debugging
	#ifdef _DBG_TRACE_POINTS_
	void TgtDbgSignalTracePoint(u8 bTracePointNumber_p);
	void TgtDbgPostTraceValue(u32 dwTraceValue_p);
	#define TGT_DBG_SIGNAL_TRACE_POINT(p) TgtDbgSignalTracePoint(p)
	#define TGT_DBG_POST_TRACE_VALUE(v) TgtDbgPostTraceValue(v)
	#else
	#define TGT_DBG_SIGNAL_TRACE_POINT(p)
	#define TGT_DBG_POST_TRACE_VALUE(v)
	#endif

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

	typedef struct {
	#ifndef EPL_NO_FIFO
	tShbInstance m_pShbKernelToUserInstance;
	tShbInstance m_pShbUserToKernelInstance;
	#endif
	tEplProcessEventCb m_pfnApiProcessEventCb;

	} tEplEventuInstance;

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

	//#ifndef EPL_NO_FIFO
	static tEplEventuInstance EplEventuInstance_g;
	//#endif

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

	#ifndef EPL_NO_FIFO
	// callback function for incomming events
	static void EplEventuRxSignalHandlerCb(tShbInstance pShbRxInstance_p,
	unsigned long ulDataSize_p);
	#endif

	/***************************************************************************/
	/* */
	/* */
	/* C L A S S <Epl-User-Event> */
	/* */
	/* */
	/***************************************************************************/
	//
	// Description:
	//
	//
	/***************************************************************************/

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

	//---------------------------------------------------------------------------
	//
	// Function: EplEventuInit
	//
	// Description: function initialize the first instance
	//
	//
	//
	// Parameters: pfnApiProcessEventCb_p = function pointer for API event callback
	//
	//
	// Returns: tEpKernel = errorcode
	//
	//
	// State:
	//
	//---------------------------------------------------------------------------
	tEplKernel EplEventuInit(tEplProcessEventCb pfnApiProcessEventCb_p)
	{
	tEplKernel Ret;

	Ret = EplEventuAddInstance(pfnApiProcessEventCb_p);

	return Ret;

	}

	//---------------------------------------------------------------------------
	//
	// Function: EplEventuAddInstance
	//
	// Description: function add one more instance
	//
	//
	//
	// Parameters: pfnApiProcessEventCb_p = function pointer for API event callback
	//
	//
	// Returns: tEpKernel = errorcode
	//
	//
	// State:
	//
	//---------------------------------------------------------------------------
	tEplKernel EplEventuAddInstance(tEplProcessEventCb pfnApiProcessEventCb_p)
	{
	tEplKernel Ret;
	#ifndef EPL_NO_FIFO
	tShbError ShbError;
	unsigned int fShbNewCreated;
	#endif

	Ret = kEplSuccessful;

	// init instance variables
	EplEventuInstance_g.m_pfnApiProcessEventCb = pfnApiProcessEventCb_p;

	#ifndef EPL_NO_FIFO
	// init shared loop buffer
	// kernel -> user
	ShbError = ShbCirAllocBuffer(EPL_EVENT_SIZE_SHB_KERNEL_TO_USER,
	EPL_EVENT_NAME_SHB_KERNEL_TO_USER,
	&EplEventuInstance_g.
	m_pShbKernelToUserInstance,
	&fShbNewCreated);
	if (ShbError != kShbOk) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuAddInstance(): ShbCirAllocBuffer(K2U) -> 0x%X\n",
	ShbError);
	Ret = kEplNoResource;
	goto Exit;
	}

	// user -> kernel
	ShbError = ShbCirAllocBuffer(EPL_EVENT_SIZE_SHB_USER_TO_KERNEL,
	EPL_EVENT_NAME_SHB_USER_TO_KERNEL,
	&EplEventuInstance_g.
	m_pShbUserToKernelInstance,
	&fShbNewCreated);
	if (ShbError != kShbOk) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuAddInstance(): ShbCirAllocBuffer(U2K) -> 0x%X\n",
	ShbError);
	Ret = kEplNoResource;
	goto Exit;
	}
	// register eventhandler
	ShbError =
	ShbCirSetSignalHandlerNewData(EplEventuInstance_g.
	m_pShbKernelToUserInstance,
	EplEventuRxSignalHandlerCb,
	kShbPriorityNormal);
	if (ShbError != kShbOk) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuAddInstance(): ShbCirSetSignalHandlerNewData(K2U) -> 0x%X\n",
	ShbError);
	Ret = kEplNoResource;
	goto Exit;
	}

	Exit:
	#endif

	return Ret;

	}

	//---------------------------------------------------------------------------
	//
	// Function: EplEventuDelInstance
	//
	// Description: function delete instance an free the bufferstructure
	//
	//
	//
	// Parameters:
	//
	//
	// Returns: tEpKernel = errorcode
	//
	//
	// State:
	//
	//---------------------------------------------------------------------------
	tEplKernel EplEventuDelInstance(void)
	{
	tEplKernel Ret;
	#ifndef EPL_NO_FIFO
	tShbError ShbError;
	#endif

	Ret = kEplSuccessful;

	#ifndef EPL_NO_FIFO
	// set eventhandler to NULL
	ShbError =
	ShbCirSetSignalHandlerNewData(EplEventuInstance_g.
	m_pShbKernelToUserInstance, NULL,
	kShbPriorityNormal);
	if (ShbError != kShbOk) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuDelInstance(): ShbCirSetSignalHandlerNewData(K2U) -> 0x%X\n",
	ShbError);
	Ret = kEplNoResource;
	}
	// free buffer User -> Kernel
	ShbError =
	ShbCirReleaseBuffer(EplEventuInstance_g.m_pShbUserToKernelInstance);
	if ((ShbError != kShbOk) && (ShbError != kShbMemUsedByOtherProcs)) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuDelInstance(): ShbCirReleaseBuffer(U2K) -> 0x%X\n",
	ShbError);
	Ret = kEplNoResource;
	} else {
	EplEventuInstance_g.m_pShbUserToKernelInstance = NULL;
	}

	// free buffer Kernel -> User
	ShbError =
	ShbCirReleaseBuffer(EplEventuInstance_g.m_pShbKernelToUserInstance);
	if ((ShbError != kShbOk) && (ShbError != kShbMemUsedByOtherProcs)) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuDelInstance(): ShbCirReleaseBuffer(K2U) -> 0x%X\n",
	ShbError);
	Ret = kEplNoResource;
	} else {
	EplEventuInstance_g.m_pShbKernelToUserInstance = NULL;
	}

	#endif

	return Ret;

	}

	//---------------------------------------------------------------------------
	//
	// Function: EplEventuProcess
	//
	// Description: Kernelthread that dispatches events in kernelspace
	//
	//
	//
	// Parameters: pEvent_p = pointer to event-structur from buffer
	//
	//
	// Returns: tEpKernel = errorcode
	//
	//
	// State:
	//
	//---------------------------------------------------------------------------
	tEplKernel EplEventuProcess(tEplEvent *pEvent_p)
	{
	tEplKernel Ret;
	tEplEventSource EventSource;

	Ret = kEplSuccessful;

	// check m_EventSink
	switch (pEvent_p->m_EventSink) {
	// NMT-User-Module
	case kEplEventSinkNmtu:
	{
	#if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMTU)) != 0)
	Ret = EplNmtuProcessEvent(pEvent_p);
	if ((Ret != kEplSuccessful) && (Ret != kEplShutdown)) {
	EventSource = kEplEventSourceNmtu;

	// Error event for API layer
	EplEventuPostError(kEplEventSourceEventu,
	Ret,
	sizeof(EventSource),
	&EventSource);
	}
	#endif
	break;
	}

	#if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
	// NMT-MN-User-Module
	case kEplEventSinkNmtMnu:
	{
	Ret = EplNmtMnuProcessEvent(pEvent_p);
	if ((Ret != kEplSuccessful) && (Ret != kEplShutdown)) {
	EventSource = kEplEventSourceNmtMnu;

	// Error event for API layer
	EplEventuPostError(kEplEventSourceEventu,
	Ret,
	sizeof(EventSource),
	&EventSource);
	}
	break;
	}
	#endif

	#if ((((EPL_MODULE_INTEGRATION) & (EPL_MODULE_SDOC)) != 0) \
	\|\| (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_SDOS)) != 0))
	// events for asynchronus SDO Sequence Layer
	case kEplEventSinkSdoAsySeq:
	{
	Ret = EplSdoAsySeqProcessEvent(pEvent_p);
	if ((Ret != kEplSuccessful) && (Ret != kEplShutdown)) {
	EventSource = kEplEventSourceSdoAsySeq;

	// Error event for API layer
	EplEventuPostError(kEplEventSourceEventu,
	Ret,
	sizeof(EventSource),
	&EventSource);
	}
	break;
	}
	#endif

	// LED user part module
	case kEplEventSinkLedu:
	{
	#if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_LEDU)) != 0)
	Ret = EplLeduProcessEvent(pEvent_p);
	if ((Ret != kEplSuccessful) && (Ret != kEplShutdown)) {
	EventSource = kEplEventSourceLedu;

	// Error event for API layer
	EplEventuPostError(kEplEventSourceEventu,
	Ret,
	sizeof(EventSource),
	&EventSource);
	}
	#endif
	break;
	}

	// event for EPL api
	case kEplEventSinkApi:
	{
	if (EplEventuInstance_g.m_pfnApiProcessEventCb != NULL) {
	Ret =
	EplEventuInstance_g.
	m_pfnApiProcessEventCb(pEvent_p);
	if ((Ret != kEplSuccessful)
	&& (Ret != kEplShutdown)) {
	EventSource = kEplEventSourceEplApi;

	// Error event for API layer
	EplEventuPostError
	(kEplEventSourceEventu, Ret,
	sizeof(EventSource), &EventSource);
	}
	}
	break;

	}

	case kEplEventSinkDlluCal:
	{
	Ret = EplDlluCalProcess(pEvent_p);
	if ((Ret != kEplSuccessful) && (Ret != kEplShutdown)) {
	EventSource = kEplEventSourceDllu;

	// Error event for API layer
	EplEventuPostError(kEplEventSourceEventu,
	Ret,
	sizeof(EventSource),
	&EventSource);
	}
	break;

	}

	case kEplEventSinkErru:
	{
	/*
	Ret = EplErruProcess(pEvent_p);
	if ((Ret != kEplSuccessful) && (Ret != kEplShutdown))
	{
	EventSource = kEplEventSourceErru;

	// Error event for API layer
	EplEventuPostError(kEplEventSourceEventu,
	Ret,
	sizeof(EventSource),
	&EventSource);
	}
	*/
	break;

	}

	// unknown sink
	default:
	{
	Ret = kEplEventUnknownSink;
	}

	} // end of switch(pEvent_p->m_EventSink)

	return Ret;

	}

	//---------------------------------------------------------------------------
	//
	// Function: EplEventuPost
	//
	// Description: post events from userspace
	//
	//
	//
	// Parameters: pEvent_p = pointer to event-structur from buffer
	//
	//
	// Returns: tEpKernel = errorcode
	//
	//
	// State:
	//
	//---------------------------------------------------------------------------
	tEplKernel EplEventuPost(tEplEvent *pEvent_p)
	{
	tEplKernel Ret;
	#ifndef EPL_NO_FIFO
	tShbError ShbError;
	tShbCirChunk ShbCirChunk;
	unsigned long ulDataSize;
	unsigned int fBufferCompleted;
	#endif

	Ret = kEplSuccessful;

	#ifndef EPL_NO_FIFO
	// 2006/08/03 d.k.: Event and argument are posted as separate chunks to the event queue.
	ulDataSize =
	sizeof(tEplEvent) +
	((pEvent_p->m_pArg != NULL) ? pEvent_p->m_uiSize : 0);
	#endif

	// decide in which buffer the event have to write
	switch (pEvent_p->m_EventSink) {
	// kernelspace modules
	case kEplEventSinkSync:
	case kEplEventSinkNmtk:
	case kEplEventSinkDllk:
	case kEplEventSinkDllkCal:
	case kEplEventSinkPdok:
	case kEplEventSinkErrk:
	{
	#ifndef EPL_NO_FIFO
	// post message
	ShbError =
	ShbCirAllocDataBlock(EplEventuInstance_g.
	m_pShbUserToKernelInstance,
	&ShbCirChunk, ulDataSize);
	if (ShbError != kShbOk) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuPost(): ShbCirAllocDataBlock(U2K) -> 0x%X\n",
	ShbError);
	Ret = kEplEventPostError;
	goto Exit;
	}
	ShbError =
	ShbCirWriteDataChunk(EplEventuInstance_g.
	m_pShbUserToKernelInstance,
	&ShbCirChunk, pEvent_p,
	sizeof(tEplEvent),
	&fBufferCompleted);
	if (ShbError != kShbOk) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuPost(): ShbCirWriteDataChunk(U2K) -> 0x%X\n",
	ShbError);
	Ret = kEplEventPostError;
	goto Exit;
	}
	if (fBufferCompleted == FALSE) {
	ShbError =
	ShbCirWriteDataChunk(EplEventuInstance_g.
	m_pShbUserToKernelInstance,
	&ShbCirChunk,
	pEvent_p->m_pArg,
	(unsigned long)
	pEvent_p->m_uiSize,
	&fBufferCompleted);
	if ((ShbError != kShbOk)
	\|\| (fBufferCompleted == FALSE)) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuPost(): ShbCirWriteDataChunk2(U2K) -> 0x%X\n",
	ShbError);
	Ret = kEplEventPostError;
	goto Exit;
	}
	}
	#else
	Ret = EplEventkProcess(pEvent_p);
	#endif

	break;
	}

	// userspace modules
	case kEplEventSinkNmtMnu:
	case kEplEventSinkNmtu:
	case kEplEventSinkSdoAsySeq:
	case kEplEventSinkApi:
	case kEplEventSinkDlluCal:
	case kEplEventSinkErru:
	case kEplEventSinkLedu:
	{
	#ifndef EPL_NO_FIFO
	// post message
	ShbError =
	ShbCirAllocDataBlock(EplEventuInstance_g.
	m_pShbKernelToUserInstance,
	&ShbCirChunk, ulDataSize);
	if (ShbError != kShbOk) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuPost(): ShbCirAllocDataBlock(K2U) -> 0x%X\n",
	ShbError);
	Ret = kEplEventPostError;
	goto Exit;
	}
	ShbError =
	ShbCirWriteDataChunk(EplEventuInstance_g.
	m_pShbKernelToUserInstance,
	&ShbCirChunk, pEvent_p,
	sizeof(tEplEvent),
	&fBufferCompleted);
	if (ShbError != kShbOk) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuPost(): ShbCirWriteDataChunk(K2U) -> 0x%X\n",
	ShbError);
	Ret = kEplEventPostError;
	goto Exit;
	}
	if (fBufferCompleted == FALSE) {
	ShbError =
	ShbCirWriteDataChunk(EplEventuInstance_g.
	m_pShbKernelToUserInstance,
	&ShbCirChunk,
	pEvent_p->m_pArg,
	(unsigned long)
	pEvent_p->m_uiSize,
	&fBufferCompleted);
	if ((ShbError != kShbOk)
	\|\| (fBufferCompleted == FALSE)) {
	EPL_DBGLVL_EVENTK_TRACE1
	("EplEventuPost(): ShbCirWriteDataChunk2(K2U) -> 0x%X\n",
	ShbError);
	Ret = kEplEventPostError;
	goto Exit;
	}
	}
	#else
	Ret = EplEventuProcess(pEvent_p);
	#endif

	break;
	}

	default:
	{
	Ret = kEplEventUnknownSink;
	}

	} // end of switch(pEvent_p->m_EventSink)

	#ifndef EPL_NO_FIFO
	Exit:
	#endif
	return Ret;

	}

	//---------------------------------------------------------------------------
	//
	// Function: EplEventuPostError
	//
	// Description: post errorevent from userspace
	//
	//
	//
	// Parameters: EventSource_p = source-module of the errorevent
	// EplError_p = code of occured error
	// uiArgSize_p = size of the argument
	// pArg_p = pointer to the argument
	//
	//
	// Returns: tEpKernel = errorcode
	//
	//
	// State:
	//
	//---------------------------------------------------------------------------
	tEplKernel EplEventuPostError(tEplEventSource EventSource_p,
	tEplKernel EplError_p,
	unsigned int uiArgSize_p, void *pArg_p)
	{
	tEplKernel Ret;
	u8 abBuffer[EPL_MAX_EVENT_ARG_SIZE];
	tEplEventError pEventError = (tEplEventError ) abBuffer;
	tEplEvent EplEvent;

	Ret = kEplSuccessful;

	// create argument
	pEventError->m_EventSource = EventSource_p;
	pEventError->m_EplError = EplError_p;
	EPL_MEMCPY(&pEventError->m_Arg, pArg_p, uiArgSize_p);

	// create event
	EplEvent.m_EventType = kEplEventTypeError;
	EplEvent.m_EventSink = kEplEventSinkApi;
	EPL_MEMSET(&EplEvent.m_NetTime, 0x00, sizeof(EplEvent.m_NetTime));
	EplEvent.m_uiSize =
	(sizeof(EventSource_p) + sizeof(EplError_p) + uiArgSize_p);
	EplEvent.m_pArg = &abBuffer[0];

	// post errorevent
	Ret = EplEventuPost(&EplEvent);

	return Ret;
	}

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

	//---------------------------------------------------------------------------
	//
	// Function: EplEventuRxSignalHandlerCb()
	//
	// Description: Callback-function for evets from kernelspace
	//
	//
	//
	// Parameters: pShbRxInstance_p = Instance-pointer for buffer
	// ulDataSize_p = size of data
	//
	//
	// Returns: void
	//
	//
	// State:
	//
	//---------------------------------------------------------------------------
	#ifndef EPL_NO_FIFO
	static void EplEventuRxSignalHandlerCb(tShbInstance pShbRxInstance_p,
	unsigned long ulDataSize_p)
	{
	tEplEvent *pEplEvent;
	tShbError ShbError;
	//unsigned long ulBlockCount;
	//unsigned long ulDataSize;
	u8 abDataBuffer[sizeof(tEplEvent) + EPL_MAX_EVENT_ARG_SIZE];
	// d.k.: abDataBuffer contains the complete tEplEvent structure
	// and behind this the argument

	TGT_DBG_SIGNAL_TRACE_POINT(21);

	// d.k. not needed because it is already done in SharedBuff
	/* do
	{
	BENCHMARK_MOD_28_SET(1); // 4 µs until reset
	// get messagesize
	ShbError = ShbCirGetReadDataSize (pShbRxInstance_p, &ulDataSize);
	if(ShbError != kShbOk)
	{
	// error goto exit
	goto Exit;
	}

	BENCHMARK_MOD_28_RESET(1); // 14 µs until set
	*/
	// copy data from event queue
	ShbError = ShbCirReadDataBlock(pShbRxInstance_p,
	&abDataBuffer[0],
	sizeof(abDataBuffer), &ulDataSize_p);
	if (ShbError != kShbOk) {
	// error goto exit
	goto Exit;
	}
	// resolve the pointer to the event structure
	pEplEvent = (tEplEvent *) abDataBuffer;
	// set Datasize
	pEplEvent->m_uiSize = (ulDataSize_p - sizeof(tEplEvent));
	if (pEplEvent->m_uiSize > 0) {
	// set pointer to argument
	pEplEvent->m_pArg = &abDataBuffer[sizeof(tEplEvent)];
	} else {
	//set pointer to NULL
	pEplEvent->m_pArg = NULL;
	}

	BENCHMARK_MOD_28_SET(1);
	// call processfunction
	EplEventuProcess(pEplEvent);

	BENCHMARK_MOD_28_RESET(1);
	// read number of left messages to process
	// d.k. not needed because it is already done in SharedBuff
	/* ShbError = ShbCirGetReadBlockCount (pShbRxInstance_p, &ulBlockCount);
	if (ShbError != kShbOk)
	{
	// error goto exit
	goto Exit;
	}
	} while (ulBlockCount > 0);
	*/
	Exit:
	return;
	}
	#endif

	// EOF