drivers/staging/epl/EplEventu.c

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

  (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 PUBLIC TgtDbgSignalTracePoint(BYTE bTracePointNumber_p);
void PUBLIC TgtDbgPostTraceValue(DWORD 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 PUBLIC 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 PUBLIC 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 PUBLIC EplEventuDelInstance()
{
	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 PUBLIC 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 PUBLIC 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 PUBLIC EplEventuPostError(tEplEventSource EventSource_p,
				     tEplKernel EplError_p,
				     unsigned int uiArgSize_p, void *pArg_p)
{
	tEplKernel Ret;
	BYTE 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;
	BYTE 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