git.oblomov.eu Git - linux-2.6/blob - drivers/staging/epl/EplDllk.c

   1 /****************************************************************************
   2
   3   (c) SYSTEC electronic GmbH, D-07973 Greiz, August-Bebel-Str. 29
   4       www.systec-electronic.com
   5
   6   Project:      openPOWERLINK
   7
   8   Description:  source file for kernel DLL module
   9
  10   License:
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  21        documentation and/or other materials provided with the distribution.
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  24        contributors may be used to endorse or promote products derived
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  28     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  38     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  39     POSSIBILITY OF SUCH DAMAGE.
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  41     Severability Clause:
  42
  43         If a provision of this License is or becomes illegal, invalid or
  44         unenforceable in any jurisdiction, that shall not affect:
  45         1. the validity or enforceability in that jurisdiction of any other
  46            provision of this License; or
  47         2. the validity or enforceability in other jurisdictions of that or
  48            any other provision of this License.
  49
  50   -------------------------------------------------------------------------
  51
  52                 $RCSfile: EplDllk.c,v $
  53
  54                 $Author: D.Krueger $
  55
  56                 $Revision: 1.21 $  $Date: 2008/11/13 17:13:09 $
  57
  58                 $State: Exp $
  59
  60                 Build Environment:
  61                     GCC V3.4
  62
  63   -------------------------------------------------------------------------
  64
  65   Revision History:
  66
  67   2006/06/12 d.k.:   start of the implementation, version 1.00
  68
  69 ****************************************************************************/
  70
  71 #include "kernel/EplDllk.h"
  72 #include "kernel/EplDllkCal.h"
  73 #include "kernel/EplEventk.h"
  74 #include "kernel/EplNmtk.h"
  75 #include "edrv.h"
  76 #include "Benchmark.h"
  77
  78 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOK)) != 0)
  79 #include "kernel/EplPdok.h"
  80 #endif
  81
  82 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_VETH)) != 0)
  83 #include "kernel/VirtualEthernet.h"
  84 #endif
  85
  86 //#if EPL_TIMER_USE_HIGHRES != FALSE
  87 #include "kernel/EplTimerHighResk.h"
  88 //#endif
  89
  90 #if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_DLLK)) != 0)
  91
  92 #if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMTK)) == 0)
  93 #error "EPL module DLLK needs EPL module NMTK!"
  94 #endif
  95
  96 #if (EPL_DLL_PRES_READY_AFTER_SOA != FALSE) && (EPL_DLL_PRES_READY_AFTER_SOC != FALSE)
  97 #error "EPL module DLLK: select only one of EPL_DLL_PRES_READY_AFTER_SOA and EPL_DLL_PRES_READY_AFTER_SOC."
  98 #endif
  99
 100 #if ((EPL_DLL_PRES_READY_AFTER_SOA != FALSE) || (EPL_DLL_PRES_READY_AFTER_SOC != FALSE)) \
 101     && (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) == 0)
 102 #error "EPL module DLLK: currently, EPL_DLL_PRES_READY_AFTER_* is not supported if EPL_MODULE_NMT_MN is enabled."
 103 #endif
 104
 105 #if (EDRV_FAST_TXFRAMES == FALSE) && \
 106     ((EPL_DLL_PRES_READY_AFTER_SOA != FALSE) || (EPL_DLL_PRES_READY_AFTER_SOC != FALSE))
 107 #error "EPL module DLLK: EPL_DLL_PRES_READY_AFTER_* is enabled, but not EDRV_FAST_TXFRAMES."
 108 #endif
 109
 110 /***************************************************************************/
 111 /*                                                                         */
 112 /*                                                                         */
 113 /*          G L O B A L   D E F I N I T I O N S                            */
 114 /*                                                                         */
 115 /*                                                                         */
 116 /***************************************************************************/
 117
 118 //---------------------------------------------------------------------------
 119 // const defines
 120 //---------------------------------------------------------------------------
 121
 122 // TracePoint support for realtime-debugging
 123 #ifdef _DBG_TRACE_POINTS_
 124 void TgtDbgSignalTracePoint(u8 bTracePointNumber_p);
 125 void TgtDbgPostTraceValue(u32 dwTraceValue_p);
 126 #define TGT_DBG_SIGNAL_TRACE_POINT(p)   TgtDbgSignalTracePoint(p)
 127 #define TGT_DBG_POST_TRACE_VALUE(v)     TgtDbgPostTraceValue(v)
 128 #else
 129 #define TGT_DBG_SIGNAL_TRACE_POINT(p)
 130 #define TGT_DBG_POST_TRACE_VALUE(v)
 131 #endif
 132 #define EPL_DLLK_DBG_POST_TRACE_VALUE(Event_p, uiNodeId_p, wErrorCode_p) \
 133     TGT_DBG_POST_TRACE_VALUE((kEplEventSinkDllk << 28) | (Event_p << 24) \
 134                              | (uiNodeId_p << 16) | wErrorCode_p)
 135
 136 /***************************************************************************/
 137 /*                                                                         */
 138 /*                                                                         */
 139 /*          C L A S S  EplDllk                                             */
 140 /*                                                                         */
 141 /*                                                                         */
 142 /***************************************************************************/
 143 //
 144 // Description:
 145 //
 146 //
 147 /***************************************************************************/
 148
 149 //=========================================================================//
 150 //                                                                         //
 151 //          P R I V A T E   D E F I N I T I O N S                          //
 152 //                                                                         //
 153 //=========================================================================//
 154
 155 //---------------------------------------------------------------------------
 156 // const defines
 157 //---------------------------------------------------------------------------
 158
 159 // defines for indexes of tEplDllInstance.m_pTxFrameInfo
 160 #define EPL_DLLK_TXFRAME_IDENTRES   0   // IdentResponse on CN / MN
 161 #define EPL_DLLK_TXFRAME_STATUSRES  1   // StatusResponse on CN / MN
 162 #define EPL_DLLK_TXFRAME_NMTREQ     2   // NMT Request from FIFO on CN / MN
 163 #define EPL_DLLK_TXFRAME_NONEPL     3   // non-EPL frame from FIFO on CN / MN
 164 #define EPL_DLLK_TXFRAME_PRES       4   // PRes on CN / MN
 165 #define EPL_DLLK_TXFRAME_SOC        5   // SoC on MN
 166 #define EPL_DLLK_TXFRAME_SOA        6   // SoA on MN
 167 #define EPL_DLLK_TXFRAME_PREQ       7   // PReq on MN
 168 #if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 169 #define EPL_DLLK_TXFRAME_COUNT      (7 + EPL_D_NMT_MaxCNNumber_U8 + 2)  // on MN: 7 + MaxPReq of regular CNs + 1 Diag + 1 Router
 170 #else
 171 #define EPL_DLLK_TXFRAME_COUNT      5   // on CN: 5
 172 #endif
 173
 174 #define EPL_DLLK_BUFLEN_EMPTY       0   // buffer is empty
 175 #define EPL_DLLK_BUFLEN_FILLING     1   // just the buffer is being filled
 176 #define EPL_DLLK_BUFLEN_MIN         60  // minimum ethernet frame length
 177
 178 //---------------------------------------------------------------------------
 179 // local types
 180 //---------------------------------------------------------------------------
 181
 182 typedef enum {
 183         kEplDllGsInit = 0x00,   // MN/CN: initialisation (< PreOp2)
 184         kEplDllCsWaitPreq = 0x01,       // CN: wait for PReq frame
 185         kEplDllCsWaitSoc = 0x02,        // CN: wait for SoC frame
 186         kEplDllCsWaitSoa = 0x03,        // CN: wait for SoA frame
 187         kEplDllMsNonCyclic = 0x04,      // MN: reduced EPL cycle (PreOp1)
 188         kEplDllMsWaitSocTrig = 0x05,    // MN: wait for SoC trigger (cycle timer)
 189         kEplDllMsWaitPreqTrig = 0x06,   // MN: wait for (first) PReq trigger (WaitSoCPReq_U32)
 190         kEplDllMsWaitPres = 0x07,       // MN: wait for PRes frame from CN
 191         kEplDllMsWaitSoaTrig = 0x08,    // MN: wait for SoA trigger (PRes transmitted)
 192         kEplDllMsWaitAsndTrig = 0x09,   // MN: wait for ASnd trigger (SoA transmitted)
 193         kEplDllMsWaitAsnd = 0x0A,       // MN: wait for ASnd frame if SoA contained invitation
 194
 195 } tEplDllState;
 196
 197 typedef struct {
 198         u8 m_be_abSrcMac[6];
 199         tEdrvTxBuffer *m_pTxBuffer;     // Buffers for Tx-Frames
 200         unsigned int m_uiMaxTxFrames;
 201         u8 m_bFlag1;            // Flag 1 with EN, EC for PRes, StatusRes
 202         u8 m_bMnFlag1;  // Flag 1 with EA, ER from PReq, SoA of MN
 203         u8 m_bFlag2;            // Flag 2 with PR and RS for PRes, StatusRes, IdentRes
 204         tEplDllConfigParam m_DllConfigParam;
 205         tEplDllIdentParam m_DllIdentParam;
 206         tEplDllState m_DllState;
 207         tEplDllkCbAsync m_pfnCbAsync;
 208         tEplDllAsndFilter m_aAsndFilter[EPL_DLL_MAX_ASND_SERVICE_ID];
 209
 210 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 211         tEplDllkNodeInfo *m_pFirstNodeInfo;
 212         tEplDllkNodeInfo *m_pCurNodeInfo;
 213         tEplDllkNodeInfo m_aNodeInfo[EPL_NMT_MAX_NODE_ID];
 214         tEplDllReqServiceId m_LastReqServiceId;
 215         unsigned int m_uiLastTargetNodeId;
 216 #endif
 217
 218 #if EPL_TIMER_USE_HIGHRES != FALSE
 219         tEplTimerHdl m_TimerHdlCycle;   // used for EPL cycle monitoring on CN and generation on MN
 220 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 221         tEplTimerHdl m_TimerHdlResponse;        // used for CN response monitoring
 222 #endif                          //(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 223 #endif
 224
 225         unsigned int m_uiCycleCount;    // cycle counter (needed for multiplexed cycle support)
 226         unsigned long long m_ullFrameTimeout;   // frame timeout (cycle length + loss of frame tolerance)
 227
 228 } tEplDllkInstance;
 229
 230 //---------------------------------------------------------------------------
 231 // local vars
 232 //---------------------------------------------------------------------------
 233
 234 // if no dynamic memory allocation shall be used
 235 // define structures statically
 236 static tEplDllkInstance EplDllkInstance_g;
 237
 238 static tEdrvTxBuffer aEplDllkTxBuffer_l[EPL_DLLK_TXFRAME_COUNT];
 239
 240 //---------------------------------------------------------------------------
 241 // local function prototypes
 242 //---------------------------------------------------------------------------
 243
 244 // change DLL state on event
 245 static tEplKernel EplDllkChangeState(tEplNmtEvent NmtEvent_p,
 246                                      tEplNmtState NmtState_p);
 247
 248 // called from EdrvInterruptHandler()
 249 static void EplDllkCbFrameReceived(tEdrvRxBuffer * pRxBuffer_p);
 250
 251 // called from EdrvInterruptHandler()
 252 static void EplDllkCbFrameTransmitted(tEdrvTxBuffer * pTxBuffer_p);
 253
 254 // check frame and set missing information
 255 static tEplKernel EplDllkCheckFrame(tEplFrame * pFrame_p,
 256                                     unsigned int uiFrameSize_p);
 257
 258 // called by high resolution timer module to monitor EPL cycle as CN
 259 #if EPL_TIMER_USE_HIGHRES != FALSE
 260 static tEplKernel EplDllkCbCnTimer(tEplTimerEventArg *pEventArg_p);
 261 #endif
 262
 263 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 264 // MN: returns internal node info structure
 265 static tEplDllkNodeInfo *EplDllkGetNodeInfo(unsigned int uiNodeId_p);
 266
 267 // transmit SoA
 268 static tEplKernel EplDllkMnSendSoa(tEplNmtState NmtState_p,
 269                                    tEplDllState * pDllStateProposed_p,
 270                                    BOOL fEnableInvitation_p);
 271
 272 static tEplKernel EplDllkMnSendSoc(void);
 273
 274 static tEplKernel EplDllkMnSendPreq(tEplNmtState NmtState_p,
 275                                     tEplDllState * pDllStateProposed_p);
 276
 277 static tEplKernel EplDllkAsyncFrameNotReceived(tEplDllReqServiceId
 278                                                ReqServiceId_p,
 279                                                unsigned int uiNodeId_p);
 280
 281 static tEplKernel EplDllkCbMnTimerCycle(tEplTimerEventArg *pEventArg_p);
 282
 283 static tEplKernel EplDllkCbMnTimerResponse(tEplTimerEventArg *pEventArg_p);
 284
 285 #endif
 286
 287 //=========================================================================//
 288 //                                                                         //
 289 //          P U B L I C   F U N C T I O N S                                //
 290 //                                                                         //
 291 //=========================================================================//
 292
 293 //---------------------------------------------------------------------------
 294 //
 295 // Function:    EplDllkAddInstance()
 296 //
 297 // Description: add and initialize new instance of EPL stack
 298 //
 299 // Parameters:  pInitParam_p            = initialisation parameters like MAC address
 300 //
 301 // Returns:     tEplKernel              = error code
 302 //
 303 //
 304 // State:
 305 //
 306 //---------------------------------------------------------------------------
 307
 308 tEplKernel EplDllkAddInstance(tEplDllkInitParam * pInitParam_p)
 309 {
 310         tEplKernel Ret = kEplSuccessful;
 311         unsigned int uiIndex;
 312         tEdrvInitParam EdrvInitParam;
 313
 314         // reset instance structure
 315         EPL_MEMSET(&EplDllkInstance_g, 0, sizeof(EplDllkInstance_g));
 316
 317 #if EPL_TIMER_USE_HIGHRES != FALSE
 318         Ret = EplTimerHighReskInit();
 319         if (Ret != kEplSuccessful) {    // error occured while initializing high resolution timer module
 320                 goto Exit;
 321         }
 322 #endif
 323
 324         // if dynamic memory allocation available
 325         // allocate instance structure
 326         // allocate TPDO and RPDO table with default size
 327
 328         // initialize and link pointers in instance structure to frame tables
 329         EplDllkInstance_g.m_pTxBuffer = aEplDllkTxBuffer_l;
 330         EplDllkInstance_g.m_uiMaxTxFrames =
 331             sizeof(aEplDllkTxBuffer_l) / sizeof(tEdrvTxBuffer);
 332
 333         // initialize state
 334         EplDllkInstance_g.m_DllState = kEplDllGsInit;
 335
 336 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 337         // set up node info structure
 338         for (uiIndex = 0; uiIndex < tabentries(EplDllkInstance_g.m_aNodeInfo);
 339              uiIndex++) {
 340                 EplDllkInstance_g.m_aNodeInfo[uiIndex].m_uiNodeId = uiIndex + 1;
 341                 EplDllkInstance_g.m_aNodeInfo[uiIndex].m_wPresPayloadLimit =
 342                     0xFFFF;
 343         }
 344 #endif
 345
 346         // initialize Edrv
 347         EPL_MEMCPY(EdrvInitParam.m_abMyMacAddr, pInitParam_p->m_be_abSrcMac, 6);
 348         EdrvInitParam.m_pfnRxHandler = EplDllkCbFrameReceived;
 349         EdrvInitParam.m_pfnTxHandler = EplDllkCbFrameTransmitted;
 350         Ret = EdrvInit(&EdrvInitParam);
 351         if (Ret != kEplSuccessful) {    // error occured while initializing ethernet driver
 352                 goto Exit;
 353         }
 354         // copy local MAC address from Ethernet driver back to local instance structure
 355         // because Ethernet driver may have read it from controller EEPROM
 356         EPL_MEMCPY(EplDllkInstance_g.m_be_abSrcMac, EdrvInitParam.m_abMyMacAddr,
 357                    6);
 358         EPL_MEMCPY(pInitParam_p->m_be_abSrcMac, EdrvInitParam.m_abMyMacAddr, 6);
 359
 360         // initialize TxBuffer array
 361         for (uiIndex = 0; uiIndex < EplDllkInstance_g.m_uiMaxTxFrames;
 362              uiIndex++) {
 363                 EplDllkInstance_g.m_pTxBuffer[uiIndex].m_pbBuffer = NULL;
 364         }
 365
 366 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_VETH)) != 0)
 367         Ret = VEthAddInstance(pInitParam_p);
 368 #endif
 369
 370       Exit:
 371         return Ret;
 372 }
 373
 374 //---------------------------------------------------------------------------
 375 //
 376 // Function:    EplDllkDelInstance()
 377 //
 378 // Description: deletes an instance of EPL stack
 379 //
 380 // Parameters:  (none)
 381 //
 382 // Returns:     tEplKernel              = error code
 383 //
 384 //
 385 // State:
 386 //
 387 //---------------------------------------------------------------------------
 388
 389 tEplKernel EplDllkDelInstance(void)
 390 {
 391         tEplKernel Ret = kEplSuccessful;
 392
 393         // reset state
 394         EplDllkInstance_g.m_DllState = kEplDllGsInit;
 395
 396 #if EPL_TIMER_USE_HIGHRES != FALSE
 397         Ret = EplTimerHighReskDelInstance();
 398 #endif
 399
 400 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_VETH)) != 0)
 401         Ret = VEthDelInstance();
 402 #endif
 403
 404         Ret = EdrvShutdown();
 405         return Ret;
 406 }
 407
 408 //---------------------------------------------------------------------------
 409 //
 410 // Function:    EplDllkCreateTxFrame
 411 //
 412 // Description: creates the buffer for a Tx frame and registers it to the
 413 //              ethernet driver
 414 //
 415 // Parameters:  puiHandle_p             = OUT: handle to frame buffer
 416 //              ppFrame_p               = OUT: pointer to pointer of EPL frame
 417 //              puiFrameSize_p          = IN/OUT: pointer to size of frame
 418 //                                        returned size is always equal or larger than
 419 //                                        requested size, if that is not possible
 420 //                                        an error will be returned
 421 //              MsgType_p               = EPL message type
 422 //              ServiceId_p             = Service ID in case of ASnd frame, otherwise
 423 //                                        kEplDllAsndNotDefined
 424 //
 425 // Returns:     tEplKernel              = error code
 426 //
 427 //
 428 // State:
 429 //
 430 //---------------------------------------------------------------------------
 431
 432 tEplKernel EplDllkCreateTxFrame(unsigned int *puiHandle_p,
 433                                 tEplFrame ** ppFrame_p,
 434                                 unsigned int *puiFrameSize_p,
 435                                 tEplMsgType MsgType_p,
 436                                 tEplDllAsndServiceId ServiceId_p)
 437 {
 438         tEplKernel Ret = kEplSuccessful;
 439         tEplFrame *pTxFrame;
 440         unsigned int uiHandle = EplDllkInstance_g.m_uiMaxTxFrames;
 441         tEdrvTxBuffer *pTxBuffer = NULL;
 442
 443         if (MsgType_p == kEplMsgTypeAsnd) {
 444                 // search for fixed Tx buffers
 445                 if (ServiceId_p == kEplDllAsndIdentResponse) {
 446                         uiHandle = EPL_DLLK_TXFRAME_IDENTRES;
 447                 } else if (ServiceId_p == kEplDllAsndStatusResponse) {
 448                         uiHandle = EPL_DLLK_TXFRAME_STATUSRES;
 449                 } else if ((ServiceId_p == kEplDllAsndNmtRequest)
 450                            || (ServiceId_p == kEplDllAsndNmtCommand)) {
 451                         uiHandle = EPL_DLLK_TXFRAME_NMTREQ;
 452                 }
 453
 454                 if (uiHandle >= EplDllkInstance_g.m_uiMaxTxFrames) {    // look for free entry
 455                         uiHandle = EPL_DLLK_TXFRAME_PREQ;
 456                         pTxBuffer = &EplDllkInstance_g.m_pTxBuffer[uiHandle];
 457                         for (; uiHandle < EplDllkInstance_g.m_uiMaxTxFrames;
 458                              uiHandle++, pTxBuffer++) {
 459                                 if (pTxBuffer->m_pbBuffer == NULL) {    // free entry found
 460                                         break;
 461                                 }
 462                         }
 463                 }
 464         } else if (MsgType_p == kEplMsgTypeNonEpl) {
 465                 uiHandle = EPL_DLLK_TXFRAME_NONEPL;
 466         } else if (MsgType_p == kEplMsgTypePres) {
 467                 uiHandle = EPL_DLLK_TXFRAME_PRES;
 468         } else if (MsgType_p == kEplMsgTypeSoc) {
 469                 uiHandle = EPL_DLLK_TXFRAME_SOC;
 470         } else if (MsgType_p == kEplMsgTypeSoa) {
 471                 uiHandle = EPL_DLLK_TXFRAME_SOA;
 472         } else {                // look for free entry
 473                 uiHandle = EPL_DLLK_TXFRAME_PREQ;
 474                 pTxBuffer = &EplDllkInstance_g.m_pTxBuffer[uiHandle];
 475                 for (; uiHandle < EplDllkInstance_g.m_uiMaxTxFrames;
 476                      uiHandle++, pTxBuffer++) {
 477                         if (pTxBuffer->m_pbBuffer == NULL) {    // free entry found
 478                                 break;
 479                         }
 480                 }
 481                 if (pTxBuffer->m_pbBuffer != NULL) {
 482                         Ret = kEplEdrvNoFreeBufEntry;
 483                         goto Exit;
 484                 }
 485         }
 486
 487         // test if requested entry is free
 488         pTxBuffer = &EplDllkInstance_g.m_pTxBuffer[uiHandle];
 489         if (pTxBuffer->m_pbBuffer != NULL) {    // entry is not free
 490                 Ret = kEplEdrvNoFreeBufEntry;
 491                 goto Exit;
 492         }
 493         // setup Tx buffer
 494         pTxBuffer->m_EplMsgType = MsgType_p;
 495         pTxBuffer->m_uiMaxBufferLen = *puiFrameSize_p;
 496
 497         Ret = EdrvAllocTxMsgBuffer(pTxBuffer);
 498         if (Ret != kEplSuccessful) {    // error occured while registering Tx frame
 499                 goto Exit;
 500         }
 501         // because buffer size may be larger than requested
 502         // memorize real length of frame
 503         pTxBuffer->m_uiTxMsgLen = *puiFrameSize_p;
 504
 505         // fill whole frame with 0
 506         EPL_MEMSET(pTxBuffer->m_pbBuffer, 0, pTxBuffer->m_uiMaxBufferLen);
 507
 508         pTxFrame = (tEplFrame *) pTxBuffer->m_pbBuffer;
 509
 510         if (MsgType_p != kEplMsgTypeNonEpl) {   // fill out Frame only if it is an EPL frame
 511                 // ethertype
 512                 AmiSetWordToBe(&pTxFrame->m_be_wEtherType,
 513                                EPL_C_DLL_ETHERTYPE_EPL);
 514                 // source node ID
 515                 AmiSetByteToLe(&pTxFrame->m_le_bSrcNodeId,
 516                                (u8) EplDllkInstance_g.m_DllConfigParam.
 517                                m_uiNodeId);
 518                 // source MAC address
 519                 EPL_MEMCPY(&pTxFrame->m_be_abSrcMac[0],
 520                            &EplDllkInstance_g.m_be_abSrcMac[0], 6);
 521                 switch (MsgType_p) {
 522                 case kEplMsgTypeAsnd:
 523                         // destination MAC address
 524                         AmiSetQword48ToBe(&pTxFrame->m_be_abDstMac[0],
 525                                           EPL_C_DLL_MULTICAST_ASND);
 526                         // destination node ID
 527                         switch (ServiceId_p) {
 528                         case kEplDllAsndIdentResponse:
 529                         case kEplDllAsndStatusResponse:
 530                                 {       // IdentResponses and StatusResponses are Broadcast
 531                                         AmiSetByteToLe(&pTxFrame->
 532                                                        m_le_bDstNodeId,
 533                                                        (u8)
 534                                                        EPL_C_ADR_BROADCAST);
 535                                         break;
 536                                 }
 537
 538                         default:
 539                                 break;
 540                         }
 541                         // ASnd Service ID
 542                         AmiSetByteToLe(&pTxFrame->m_Data.m_Asnd.m_le_bServiceId,
 543                                        ServiceId_p);
 544                         break;
 545
 546                 case kEplMsgTypeSoc:
 547                         // destination MAC address
 548                         AmiSetQword48ToBe(&pTxFrame->m_be_abDstMac[0],
 549                                           EPL_C_DLL_MULTICAST_SOC);
 550                         // destination node ID
 551                         AmiSetByteToLe(&pTxFrame->m_le_bDstNodeId,
 552                                        (u8) EPL_C_ADR_BROADCAST);
 553                         // reset Flags
 554                         //AmiSetByteToLe(&pTxFrame->m_Data.m_Soc.m_le_bFlag1, (u8) 0);
 555                         //AmiSetByteToLe(&pTxFrame->m_Data.m_Soc.m_le_bFlag2, (u8) 0);
 556                         break;
 557
 558                 case kEplMsgTypeSoa:
 559                         // destination MAC address
 560                         AmiSetQword48ToBe(&pTxFrame->m_be_abDstMac[0],
 561                                           EPL_C_DLL_MULTICAST_SOA);
 562                         // destination node ID
 563                         AmiSetByteToLe(&pTxFrame->m_le_bDstNodeId,
 564                                        (u8) EPL_C_ADR_BROADCAST);
 565                         // reset Flags
 566                         //AmiSetByteToLe(&pTxFrame->m_Data.m_Soa.m_le_bFlag1, (u8) 0);
 567                         //AmiSetByteToLe(&pTxFrame->m_Data.m_Soa.m_le_bFlag2, (u8) 0);
 568                         // EPL profile version
 569                         AmiSetByteToLe(&pTxFrame->m_Data.m_Soa.m_le_bEplVersion,
 570                                        (u8) EPL_SPEC_VERSION);
 571                         break;
 572
 573                 case kEplMsgTypePres:
 574                         // destination MAC address
 575                         AmiSetQword48ToBe(&pTxFrame->m_be_abDstMac[0],
 576                                           EPL_C_DLL_MULTICAST_PRES);
 577                         // destination node ID
 578                         AmiSetByteToLe(&pTxFrame->m_le_bDstNodeId,
 579                                        (u8) EPL_C_ADR_BROADCAST);
 580                         // reset Flags
 581                         //AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.m_le_bFlag1, (u8) 0);
 582                         //AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.m_le_bFlag2, (u8) 0);
 583                         // PDO size
 584                         //AmiSetWordToLe(&pTxFrame->m_Data.m_Pres.m_le_wSize, 0);
 585                         break;
 586
 587                 case kEplMsgTypePreq:
 588                         // reset Flags
 589                         //AmiSetByteToLe(&pTxFrame->m_Data.m_Preq.m_le_bFlag1, (u8) 0);
 590                         //AmiSetByteToLe(&pTxFrame->m_Data.m_Preq.m_le_bFlag2, (u8) 0);
 591                         // PDO size
 592                         //AmiSetWordToLe(&pTxFrame->m_Data.m_Preq.m_le_wSize, 0);
 593                         break;
 594
 595                 default:
 596                         break;
 597                 }
 598                 // EPL message type
 599                 AmiSetByteToLe(&pTxFrame->m_le_bMessageType, (u8) MsgType_p);
 600         }
 601
 602         *ppFrame_p = pTxFrame;
 603         *puiFrameSize_p = pTxBuffer->m_uiMaxBufferLen;
 604         *puiHandle_p = uiHandle;
 605
 606       Exit:
 607         return Ret;
 608 }
 609
 610 //---------------------------------------------------------------------------
 611 //
 612 // Function:    EplDllkDeleteTxFrame
 613 //
 614 // Description: deletes the buffer for a Tx frame and frees it in the
 615 //              ethernet driver
 616 //
 617 // Parameters:  uiHandle_p              = IN: handle to frame buffer
 618 //
 619 // Returns:     tEplKernel              = error code
 620 //
 621 //
 622 // State:
 623 //
 624 //---------------------------------------------------------------------------
 625
 626 tEplKernel EplDllkDeleteTxFrame(unsigned int uiHandle_p)
 627 {
 628         tEplKernel Ret = kEplSuccessful;
 629         tEdrvTxBuffer *pTxBuffer = NULL;
 630
 631         if (uiHandle_p >= EplDllkInstance_g.m_uiMaxTxFrames) {  // handle is not valid
 632                 Ret = kEplDllIllegalHdl;
 633                 goto Exit;
 634         }
 635
 636         pTxBuffer = &EplDllkInstance_g.m_pTxBuffer[uiHandle_p];
 637
 638         // mark buffer as free so that frame will not be send in future anymore
 639         // $$$ d.k. What's up with running transmissions?
 640         pTxBuffer->m_uiTxMsgLen = EPL_DLLK_BUFLEN_EMPTY;
 641         pTxBuffer->m_pbBuffer = NULL;
 642
 643         // delete Tx buffer
 644         Ret = EdrvReleaseTxMsgBuffer(pTxBuffer);
 645         if (Ret != kEplSuccessful) {    // error occured while releasing Tx frame
 646                 goto Exit;
 647         }
 648
 649       Exit:
 650         return Ret;
 651 }
 652
 653 //---------------------------------------------------------------------------
 654 //
 655 // Function:    EplDllkProcess
 656 //
 657 // Description: process the passed event
 658 //
 659 // Parameters:  pEvent_p                = event to be processed
 660 //
 661 // Returns:     tEplKernel              = error code
 662 //
 663 //
 664 // State:
 665 //
 666 //---------------------------------------------------------------------------
 667
 668 tEplKernel EplDllkProcess(tEplEvent * pEvent_p)
 669 {
 670         tEplKernel Ret = kEplSuccessful;
 671         tEplFrame *pTxFrame;
 672         tEdrvTxBuffer *pTxBuffer;
 673         unsigned int uiHandle;
 674         unsigned int uiFrameSize;
 675         u8 abMulticastMac[6];
 676         tEplDllAsyncReqPriority AsyncReqPriority;
 677         unsigned int uiFrameCount;
 678         tEplNmtState NmtState;
 679 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOK)) != 0)
 680         tEplFrameInfo FrameInfo;
 681 #endif
 682
 683         switch (pEvent_p->m_EventType) {
 684         case kEplEventTypeDllkCreate:
 685                 {
 686                         // $$$ reset ethernet driver
 687
 688                         NmtState = *((tEplNmtState *) pEvent_p->m_pArg);
 689
 690                         // initialize flags for PRes and StatusRes
 691                         EplDllkInstance_g.m_bFlag1 = EPL_FRAME_FLAG1_EC;
 692                         EplDllkInstance_g.m_bMnFlag1 = 0;
 693                         EplDllkInstance_g.m_bFlag2 = 0;
 694
 695 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 696                         // initialize linked node list
 697                         EplDllkInstance_g.m_pFirstNodeInfo = NULL;
 698 #endif
 699
 700                         // register TxFrames in Edrv
 701
 702                         // IdentResponse
 703                         uiFrameSize = EPL_C_DLL_MINSIZE_IDENTRES;
 704                         Ret =
 705                             EplDllkCreateTxFrame(&uiHandle, &pTxFrame,
 706                                                  &uiFrameSize, kEplMsgTypeAsnd,
 707                                                  kEplDllAsndIdentResponse);
 708                         if (Ret != kEplSuccessful) {    // error occured while registering Tx frame
 709                                 goto Exit;
 710                         }
 711                         // EPL profile version
 712                         AmiSetByteToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 713                                        m_IdentResponse.m_le_bEplProfileVersion,
 714                                        (u8) EPL_SPEC_VERSION);
 715                         // FeatureFlags
 716                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 717                                         m_IdentResponse.m_le_dwFeatureFlags,
 718                                         EplDllkInstance_g.m_DllConfigParam.
 719                                         m_dwFeatureFlags);
 720                         // MTU
 721                         AmiSetWordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 722                                        m_IdentResponse.m_le_wMtu,
 723                                        (u16) EplDllkInstance_g.
 724                                        m_DllConfigParam.m_uiAsyncMtu);
 725                         // PollInSize
 726                         AmiSetWordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 727                                        m_IdentResponse.m_le_wPollInSize,
 728                                        (u16) EplDllkInstance_g.
 729                                        m_DllConfigParam.
 730                                        m_uiPreqActPayloadLimit);
 731                         // PollOutSize
 732                         AmiSetWordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 733                                        m_IdentResponse.m_le_wPollOutSize,
 734                                        (u16) EplDllkInstance_g.
 735                                        m_DllConfigParam.
 736                                        m_uiPresActPayloadLimit);
 737                         // ResponseTime / PresMaxLatency
 738                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 739                                         m_IdentResponse.m_le_dwResponseTime,
 740                                         EplDllkInstance_g.m_DllConfigParam.
 741                                         m_dwPresMaxLatency);
 742                         // DeviceType
 743                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 744                                         m_IdentResponse.m_le_dwDeviceType,
 745                                         EplDllkInstance_g.m_DllIdentParam.
 746                                         m_dwDeviceType);
 747                         // VendorId
 748                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 749                                         m_IdentResponse.m_le_dwVendorId,
 750                                         EplDllkInstance_g.m_DllIdentParam.
 751                                         m_dwVendorId);
 752                         // ProductCode
 753                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 754                                         m_IdentResponse.m_le_dwProductCode,
 755                                         EplDllkInstance_g.m_DllIdentParam.
 756                                         m_dwProductCode);
 757                         // RevisionNumber
 758                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 759                                         m_IdentResponse.m_le_dwRevisionNumber,
 760                                         EplDllkInstance_g.m_DllIdentParam.
 761                                         m_dwRevisionNumber);
 762                         // SerialNumber
 763                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 764                                         m_IdentResponse.m_le_dwSerialNumber,
 765                                         EplDllkInstance_g.m_DllIdentParam.
 766                                         m_dwSerialNumber);
 767                         // VendorSpecificExt1
 768                         AmiSetQword64ToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 769                                           m_IdentResponse.
 770                                           m_le_qwVendorSpecificExt1,
 771                                           EplDllkInstance_g.m_DllIdentParam.
 772                                           m_qwVendorSpecificExt1);
 773                         // VerifyConfigurationDate
 774                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 775                                         m_IdentResponse.
 776                                         m_le_dwVerifyConfigurationDate,
 777                                         EplDllkInstance_g.m_DllIdentParam.
 778                                         m_dwVerifyConfigurationDate);
 779                         // VerifyConfigurationTime
 780                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 781                                         m_IdentResponse.
 782                                         m_le_dwVerifyConfigurationTime,
 783                                         EplDllkInstance_g.m_DllIdentParam.
 784                                         m_dwVerifyConfigurationTime);
 785                         // ApplicationSwDate
 786                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 787                                         m_IdentResponse.
 788                                         m_le_dwApplicationSwDate,
 789                                         EplDllkInstance_g.m_DllIdentParam.
 790                                         m_dwApplicationSwDate);
 791                         // ApplicationSwTime
 792                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 793                                         m_IdentResponse.
 794                                         m_le_dwApplicationSwTime,
 795                                         EplDllkInstance_g.m_DllIdentParam.
 796                                         m_dwApplicationSwTime);
 797                         // IPAddress
 798                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 799                                         m_IdentResponse.m_le_dwIpAddress,
 800                                         EplDllkInstance_g.m_DllIdentParam.
 801                                         m_dwIpAddress);
 802                         // SubnetMask
 803                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 804                                         m_IdentResponse.m_le_dwSubnetMask,
 805                                         EplDllkInstance_g.m_DllIdentParam.
 806                                         m_dwSubnetMask);
 807                         // DefaultGateway
 808                         AmiSetDwordToLe(&pTxFrame->m_Data.m_Asnd.m_Payload.
 809                                         m_IdentResponse.m_le_dwDefaultGateway,
 810                                         EplDllkInstance_g.m_DllIdentParam.
 811                                         m_dwDefaultGateway);
 812                         // HostName
 813                         EPL_MEMCPY(&pTxFrame->m_Data.m_Asnd.m_Payload.
 814                                    m_IdentResponse.m_le_sHostname[0],
 815                                    &EplDllkInstance_g.m_DllIdentParam.
 816                                    m_sHostname[0],
 817                                    sizeof(EplDllkInstance_g.m_DllIdentParam.
 818                                           m_sHostname));
 819                         // VendorSpecificExt2
 820                         EPL_MEMCPY(&pTxFrame->m_Data.m_Asnd.m_Payload.
 821                                    m_IdentResponse.m_le_abVendorSpecificExt2[0],
 822                                    &EplDllkInstance_g.m_DllIdentParam.
 823                                    m_abVendorSpecificExt2[0],
 824                                    sizeof(EplDllkInstance_g.m_DllIdentParam.
 825                                           m_abVendorSpecificExt2));
 826
 827                         // StatusResponse
 828                         uiFrameSize = EPL_C_DLL_MINSIZE_STATUSRES;
 829                         Ret =
 830                             EplDllkCreateTxFrame(&uiHandle, &pTxFrame,
 831                                                  &uiFrameSize, kEplMsgTypeAsnd,
 832                                                  kEplDllAsndStatusResponse);
 833                         if (Ret != kEplSuccessful) {    // error occured while registering Tx frame
 834                                 goto Exit;
 835                         }
 836                         // PRes $$$ maybe move this to PDO module
 837                         if ((EplDllkInstance_g.m_DllConfigParam.m_fAsyncOnly ==
 838                              FALSE)
 839                             && (EplDllkInstance_g.m_DllConfigParam.m_uiPresActPayloadLimit >= 36)) {    // it is not configured as async-only CN,
 840                                 // so take part in isochronous phase and register PRes frame
 841                                 uiFrameSize =
 842                                     EplDllkInstance_g.m_DllConfigParam.
 843                                     m_uiPresActPayloadLimit + 24;
 844                                 Ret =
 845                                     EplDllkCreateTxFrame(&uiHandle, &pTxFrame,
 846                                                          &uiFrameSize,
 847                                                          kEplMsgTypePres,
 848                                                          kEplDllAsndNotDefined);
 849                                 if (Ret != kEplSuccessful) {    // error occured while registering Tx frame
 850                                         goto Exit;
 851                                 }
 852 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOK)) != 0)
 853                                 // initially encode TPDO -> inform PDO module
 854                                 FrameInfo.m_pFrame = pTxFrame;
 855                                 FrameInfo.m_uiFrameSize = uiFrameSize;
 856                                 Ret = EplPdokCbPdoTransmitted(&FrameInfo);
 857 #endif
 858                                 // reset cycle counter
 859                                 EplDllkInstance_g.m_uiCycleCount = 0;
 860                         } else {        // it is an async-only CN
 861                                 // fool EplDllkChangeState() to think that PRes was not expected
 862                                 EplDllkInstance_g.m_uiCycleCount = 1;
 863                         }
 864
 865                         // NMT request
 866                         uiFrameSize = EPL_C_IP_MAX_MTU;
 867                         Ret =
 868                             EplDllkCreateTxFrame(&uiHandle, &pTxFrame,
 869                                                  &uiFrameSize, kEplMsgTypeAsnd,
 870                                                  kEplDllAsndNmtRequest);
 871                         if (Ret != kEplSuccessful) {    // error occured while registering Tx frame
 872                                 goto Exit;
 873                         }
 874                         // mark Tx buffer as empty
 875                         EplDllkInstance_g.m_pTxBuffer[uiHandle].m_uiTxMsgLen =
 876                             EPL_DLLK_BUFLEN_EMPTY;
 877
 878                         // non-EPL frame
 879                         uiFrameSize = EPL_C_IP_MAX_MTU;
 880                         Ret =
 881                             EplDllkCreateTxFrame(&uiHandle, &pTxFrame,
 882                                                  &uiFrameSize,
 883                                                  kEplMsgTypeNonEpl,
 884                                                  kEplDllAsndNotDefined);
 885                         if (Ret != kEplSuccessful) {    // error occured while registering Tx frame
 886                                 goto Exit;
 887                         }
 888                         // mark Tx buffer as empty
 889                         EplDllkInstance_g.m_pTxBuffer[uiHandle].m_uiTxMsgLen =
 890                             EPL_DLLK_BUFLEN_EMPTY;
 891
 892                         // register multicast MACs in ethernet driver
 893                         AmiSetQword48ToBe(&abMulticastMac[0],
 894                                           EPL_C_DLL_MULTICAST_SOC);
 895                         Ret = EdrvDefineRxMacAddrEntry(abMulticastMac);
 896                         AmiSetQword48ToBe(&abMulticastMac[0],
 897                                           EPL_C_DLL_MULTICAST_SOA);
 898                         Ret = EdrvDefineRxMacAddrEntry(abMulticastMac);
 899                         AmiSetQword48ToBe(&abMulticastMac[0],
 900                                           EPL_C_DLL_MULTICAST_PRES);
 901                         Ret = EdrvDefineRxMacAddrEntry(abMulticastMac);
 902                         AmiSetQword48ToBe(&abMulticastMac[0],
 903                                           EPL_C_DLL_MULTICAST_ASND);
 904                         Ret = EdrvDefineRxMacAddrEntry(abMulticastMac);
 905
 906 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 907                         if (NmtState >= kEplNmtMsNotActive) {   // local node is MN
 908                                 unsigned int uiIndex;
 909
 910                                 // SoC
 911                                 uiFrameSize = EPL_C_DLL_MINSIZE_SOC;
 912                                 Ret =
 913                                     EplDllkCreateTxFrame(&uiHandle, &pTxFrame,
 914                                                          &uiFrameSize,
 915                                                          kEplMsgTypeSoc,
 916                                                          kEplDllAsndNotDefined);
 917                                 if (Ret != kEplSuccessful) {    // error occured while registering Tx frame
 918                                         goto Exit;
 919                                 }
 920                                 // SoA
 921                                 uiFrameSize = EPL_C_DLL_MINSIZE_SOA;
 922                                 Ret =
 923                                     EplDllkCreateTxFrame(&uiHandle, &pTxFrame,
 924                                                          &uiFrameSize,
 925                                                          kEplMsgTypeSoa,
 926                                                          kEplDllAsndNotDefined);
 927                                 if (Ret != kEplSuccessful) {    // error occured while registering Tx frame
 928                                         goto Exit;
 929                                 }
 930
 931                                 for (uiIndex = 0;
 932                                      uiIndex <
 933                                      tabentries(EplDllkInstance_g.m_aNodeInfo);
 934                                      uiIndex++) {
 935 //                    EplDllkInstance_g.m_aNodeInfo[uiIndex].m_uiNodeId = uiIndex + 1;
 936                                         EplDllkInstance_g.m_aNodeInfo[uiIndex].
 937                                             m_wPresPayloadLimit =
 938                                             (u16) EplDllkInstance_g.
 939                                             m_DllConfigParam.
 940                                             m_uiIsochrRxMaxPayload;
 941                                 }
 942
 943                                 // calculate cycle length
 944                                 EplDllkInstance_g.m_ullFrameTimeout = 1000LL
 945                                     *
 946                                     ((unsigned long long)EplDllkInstance_g.
 947                                      m_DllConfigParam.m_dwCycleLen);
 948                         }
 949 #endif //(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 950
 951                         Ret = EplDllkCalAsyncClearBuffer();
 952
 953                         break;
 954                 }
 955
 956         case kEplEventTypeDllkDestroy:
 957                 {
 958                         // destroy all data structures
 959
 960                         NmtState = *((tEplNmtState *) pEvent_p->m_pArg);
 961
 962                         // delete Tx frames
 963                         Ret = EplDllkDeleteTxFrame(EPL_DLLK_TXFRAME_IDENTRES);
 964                         if (Ret != kEplSuccessful) {    // error occured while deregistering Tx frame
 965                                 goto Exit;
 966                         }
 967
 968                         Ret = EplDllkDeleteTxFrame(EPL_DLLK_TXFRAME_STATUSRES);
 969                         if (Ret != kEplSuccessful) {    // error occured while deregistering Tx frame
 970                                 goto Exit;
 971                         }
 972
 973                         Ret = EplDllkDeleteTxFrame(EPL_DLLK_TXFRAME_PRES);
 974                         if (Ret != kEplSuccessful) {    // error occured while deregistering Tx frame
 975                                 goto Exit;
 976                         }
 977
 978                         Ret = EplDllkDeleteTxFrame(EPL_DLLK_TXFRAME_NMTREQ);
 979                         if (Ret != kEplSuccessful) {    // error occured while deregistering Tx frame
 980                                 goto Exit;
 981                         }
 982
 983                         Ret = EplDllkDeleteTxFrame(EPL_DLLK_TXFRAME_NONEPL);
 984                         if (Ret != kEplSuccessful) {    // error occured while deregistering Tx frame
 985                                 goto Exit;
 986                         }
 987 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 988                         if (NmtState >= kEplNmtMsNotActive) {   // local node was MN
 989                                 unsigned int uiIndex;
 990
 991                                 Ret =
 992                                     EplDllkDeleteTxFrame(EPL_DLLK_TXFRAME_SOC);
 993                                 if (Ret != kEplSuccessful) {    // error occured while deregistering Tx frame
 994                                         goto Exit;
 995                                 }
 996
 997                                 Ret =
 998                                     EplDllkDeleteTxFrame(EPL_DLLK_TXFRAME_SOA);
 999                                 if (Ret != kEplSuccessful) {    // error occured while deregistering Tx frame
1000                                         goto Exit;
1001                                 }
1002
1003                                 for (uiIndex = 0;
1004                                      uiIndex <
1005                                      tabentries(EplDllkInstance_g.m_aNodeInfo);
1006                                      uiIndex++) {
1007                                         if (EplDllkInstance_g.
1008                                             m_aNodeInfo[uiIndex].
1009                                             m_pPreqTxBuffer != NULL) {
1010                                                 uiHandle =
1011                                                     EplDllkInstance_g.
1012                                                     m_aNodeInfo[uiIndex].
1013                                                     m_pPreqTxBuffer -
1014                                                     EplDllkInstance_g.
1015                                                     m_pTxBuffer;
1016                                                 EplDllkInstance_g.
1017                                                     m_aNodeInfo[uiIndex].
1018                                                     m_pPreqTxBuffer = NULL;
1019                                                 Ret =
1020                                                     EplDllkDeleteTxFrame
1021                                                     (uiHandle);
1022                                                 if (Ret != kEplSuccessful) {    // error occured while deregistering Tx frame
1023                                                         goto Exit;
1024                                                 }
1025
1026                                         }
1027                                         EplDllkInstance_g.m_aNodeInfo[uiIndex].
1028                                             m_wPresPayloadLimit = 0xFFFF;
1029                                 }
1030                         }
1031 #endif //(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
1032
1033                         // deregister multicast MACs in ethernet driver
1034                         AmiSetQword48ToBe(&abMulticastMac[0],
1035                                           EPL_C_DLL_MULTICAST_SOC);
1036                         Ret = EdrvUndefineRxMacAddrEntry(abMulticastMac);
1037                         AmiSetQword48ToBe(&abMulticastMac[0],
1038                                           EPL_C_DLL_MULTICAST_SOA);
1039                         Ret = EdrvUndefineRxMacAddrEntry(abMulticastMac);
1040                         AmiSetQword48ToBe(&abMulticastMac[0],
1041                                           EPL_C_DLL_MULTICAST_PRES);
1042                         Ret = EdrvUndefineRxMacAddrEntry(abMulticastMac);
1043                         AmiSetQword48ToBe(&abMulticastMac[0],
1044                                           EPL_C_DLL_MULTICAST_ASND);
1045                         Ret = EdrvUndefineRxMacAddrEntry(abMulticastMac);
1046
1047                         // delete timer
1048 #if EPL_TIMER_USE_HIGHRES != FALSE
1049                         Ret =
1050                             EplTimerHighReskDeleteTimer(&EplDllkInstance_g.
1051                                                         m_TimerHdlCycle);
1052 #endif
1053
1054                         break;
1055                 }
1056
1057         case kEplEventTypeDllkFillTx:
1058                 {
1059                         // fill TxBuffer of specified priority with new frame if empty
1060
1061                         pTxFrame = NULL;
1062                         AsyncReqPriority =
1063                             *((tEplDllAsyncReqPriority *) pEvent_p->m_pArg);
1064                         switch (AsyncReqPriority) {
1065                         case kEplDllAsyncReqPrioNmt:    // NMT request priority
1066                                 {
1067                                         pTxBuffer =
1068                                             &EplDllkInstance_g.
1069                                             m_pTxBuffer
1070                                             [EPL_DLLK_TXFRAME_NMTREQ];
1071                                         if (pTxBuffer->m_pbBuffer != NULL) {    // NmtRequest does exist
1072                                                 // check if frame is empty and not being filled
1073                                                 if (pTxBuffer->m_uiTxMsgLen ==
1074                                                     EPL_DLLK_BUFLEN_EMPTY) {
1075                                                         // mark Tx buffer as filling is in process
1076                                                         pTxBuffer->
1077                                                             m_uiTxMsgLen =
1078                                                             EPL_DLLK_BUFLEN_FILLING;
1079                                                         // set max buffer size as input parameter
1080                                                         uiFrameSize =
1081                                                             pTxBuffer->
1082                                                             m_uiMaxBufferLen;
1083                                                         // copy frame from shared loop buffer to Tx buffer
1084                                                         Ret =
1085                                                             EplDllkCalAsyncGetTxFrame
1086                                                             (pTxBuffer->
1087                                                              m_pbBuffer,
1088                                                              &uiFrameSize,
1089                                                              AsyncReqPriority);
1090                                                         if (Ret ==
1091                                                             kEplSuccessful) {
1092                                                                 pTxFrame =
1093                                                                     (tEplFrame
1094                                                                      *)
1095                                                                     pTxBuffer->
1096                                                                     m_pbBuffer;
1097                                                                 Ret =
1098                                                                     EplDllkCheckFrame
1099                                                                     (pTxFrame,
1100                                                                      uiFrameSize);
1101
1102                                                                 // set buffer valid
1103                                                                 pTxBuffer->
1104                                                                     m_uiTxMsgLen
1105                                                                     =
1106                                                                     uiFrameSize;
1107                                                         } else if (Ret == kEplDllAsyncTxBufferEmpty) {  // empty Tx buffer is not a real problem
1108                                                                 // so just ignore it
1109                                                                 Ret =
1110                                                                     kEplSuccessful;
1111                                                                 // mark Tx buffer as empty
1112                                                                 pTxBuffer->
1113                                                                     m_uiTxMsgLen
1114                                                                     =
1115                                                                     EPL_DLLK_BUFLEN_EMPTY;
1116                                                         }
1117                                                 }
1118                                         }
1119                                         break;
1120                                 }
1121
1122                         default:        // generic priority
1123                                 {
1124                                         pTxBuffer =
1125                                             &EplDllkInstance_g.
1126                                             m_pTxBuffer
1127                                             [EPL_DLLK_TXFRAME_NONEPL];
1128                                         if (pTxBuffer->m_pbBuffer != NULL) {    // non-EPL frame does exist
1129                                                 // check if frame is empty and not being filled
1130                                                 if (pTxBuffer->m_uiTxMsgLen ==
1131                                                     EPL_DLLK_BUFLEN_EMPTY) {
1132                                                         // mark Tx buffer as filling is in process
1133                                                         pTxBuffer->
1134                                                             m_uiTxMsgLen =
1135                                                             EPL_DLLK_BUFLEN_FILLING;
1136                                                         // set max buffer size as input parameter
1137                                                         uiFrameSize =
1138                                                             pTxBuffer->
1139                                                             m_uiMaxBufferLen;
1140                                                         // copy frame from shared loop buffer to Tx buffer
1141                                                         Ret =
1142                                                             EplDllkCalAsyncGetTxFrame
1143                                                             (pTxBuffer->
1144                                                              m_pbBuffer,
1145                                                              &uiFrameSize,
1146                                                              AsyncReqPriority);
1147                                                         if (Ret ==
1148                                                             kEplSuccessful) {
1149                                                                 pTxFrame =
1150                                                                     (tEplFrame
1151                                                                      *)
1152                                                                     pTxBuffer->
1153                                                                     m_pbBuffer;
1154                                                                 Ret =
1155                                                                     EplDllkCheckFrame
1156                                                                     (pTxFrame,
1157                                                                      uiFrameSize);
1158
1159                                                                 // set buffer valid
1160                                                                 pTxBuffer->
1161                                                                     m_uiTxMsgLen
1162                                                                     =
1163                                                                     uiFrameSize;
1164                                                         } else if (Ret == kEplDllAsyncTxBufferEmpty) {  // empty Tx buffer is not a real problem
1165                                                                 // so just ignore it
1166                                                                 Ret =
1167                                                                     kEplSuccessful;
1168                                                                 // mark Tx buffer as empty
1169                                                                 pTxBuffer->
1170                                                                     m_uiTxMsgLen
1171                                                                     =
1172                                                                     EPL_DLLK_BUFLEN_EMPTY;
1173                                                         }
1174                                                 }
1175                                         }
1176                                         break;
1177                                 }
1178                         }
1179
1180                         NmtState = EplNmtkGetNmtState();
1181
1182                         if ((NmtState == kEplNmtCsBasicEthernet) || (NmtState == kEplNmtMsBasicEthernet)) {     // send frame immediately
1183                                 if (pTxFrame != NULL) { // frame is present
1184                                         // padding is done by Edrv or ethernet controller
1185                                         Ret = EdrvSendTxMsg(pTxBuffer);
1186                                 } else {        // no frame moved to TxBuffer
1187                                         // check if TxBuffers contain unsent frames
1188                                         if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NMTREQ].m_uiTxMsgLen > EPL_DLLK_BUFLEN_EMPTY) {      // NMT request Tx buffer contains a frame
1189                                                 Ret =
1190                                                     EdrvSendTxMsg
1191                                                     (&EplDllkInstance_g.
1192                                                      m_pTxBuffer
1193                                                      [EPL_DLLK_TXFRAME_NMTREQ]);
1194                                         } else if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NONEPL].m_uiTxMsgLen > EPL_DLLK_BUFLEN_EMPTY) {       // non-EPL Tx buffer contains a frame
1195                                                 Ret =
1196                                                     EdrvSendTxMsg
1197                                                     (&EplDllkInstance_g.
1198                                                      m_pTxBuffer
1199                                                      [EPL_DLLK_TXFRAME_NONEPL]);
1200                                         }
1201                                         if (Ret == kEplInvalidOperation) {      // ignore error if caused by already active transmission
1202                                                 Ret = kEplSuccessful;
1203                                         }
1204                                 }
1205                                 // reset PRes flag 2
1206                                 EplDllkInstance_g.m_bFlag2 = 0;
1207                         } else {
1208                                 // update Flag 2 (PR, RS)
1209                                 Ret =
1210                                     EplDllkCalAsyncGetTxCount(&AsyncReqPriority,
1211                                                               &uiFrameCount);
1212                                 if (AsyncReqPriority == kEplDllAsyncReqPrioNmt) {       // non-empty FIFO with hightest priority is for NMT requests
1213                                         if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NMTREQ].m_uiTxMsgLen > EPL_DLLK_BUFLEN_EMPTY) {      // NMT request Tx buffer contains a frame
1214                                                 // add one more frame
1215                                                 uiFrameCount++;
1216                                         }
1217                                 } else {        // non-empty FIFO with highest priority is for generic frames
1218                                         if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NMTREQ].m_uiTxMsgLen > EPL_DLLK_BUFLEN_EMPTY) {      // NMT request Tx buffer contains a frame
1219                                                 // use NMT request FIFO, because of higher priority
1220                                                 uiFrameCount = 1;
1221                                                 AsyncReqPriority =
1222                                                     kEplDllAsyncReqPrioNmt;
1223                                         } else if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NONEPL].m_uiTxMsgLen > EPL_DLLK_BUFLEN_EMPTY) {       // non-EPL Tx buffer contains a frame
1224                                                 // use NMT request FIFO, because of higher priority
1225                                                 // add one more frame
1226                                                 uiFrameCount++;
1227                                         }
1228                                 }
1229
1230                                 if (uiFrameCount > 7) { // limit frame request to send counter to 7
1231                                         uiFrameCount = 7;
1232                                 }
1233                                 if (uiFrameCount > 0) {
1234                                         EplDllkInstance_g.m_bFlag2 =
1235                                             (u8) (((AsyncReqPriority <<
1236                                                       EPL_FRAME_FLAG2_PR_SHIFT)
1237                                                      & EPL_FRAME_FLAG2_PR)
1238                                                     | (uiFrameCount &
1239                                                        EPL_FRAME_FLAG2_RS));
1240                                 } else {
1241                                         EplDllkInstance_g.m_bFlag2 = 0;
1242                                 }
1243                         }
1244
1245                         break;
1246                 }
1247
1248 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
1249         case kEplEventTypeDllkStartReducedCycle:
1250                 {
1251                         // start the reduced cycle by programming the cycle timer
1252                         // it is issued by NMT MN module, when PreOp1 is entered
1253
1254                         // clear the asynchronous queues
1255                         Ret = EplDllkCalAsyncClearQueues();
1256
1257                         // reset cycle counter (everytime a SoA is triggerd in PreOp1 the counter is incremented
1258                         // and when it reaches EPL_C_DLL_PREOP1_START_CYCLES the SoA may contain invitations)
1259                         EplDllkInstance_g.m_uiCycleCount = 0;
1260
1261                         // remove any CN from isochronous phase
1262                         while (EplDllkInstance_g.m_pFirstNodeInfo != NULL) {
1263                                 EplDllkDeleteNode(EplDllkInstance_g.
1264                                                   m_pFirstNodeInfo->m_uiNodeId);
1265                         }
1266
1267                         // change state to NonCyclic,
1268                         // hence EplDllkChangeState() will not ignore the next call
1269                         EplDllkInstance_g.m_DllState = kEplDllMsNonCyclic;
1270
1271 #if EPL_TIMER_USE_HIGHRES != FALSE
1272                         if (EplDllkInstance_g.m_DllConfigParam.
1273                             m_dwAsyncSlotTimeout != 0) {
1274                                 Ret =
1275                                     EplTimerHighReskModifyTimerNs
1276                                     (&EplDllkInstance_g.m_TimerHdlCycle,
1277                                      EplDllkInstance_g.m_DllConfigParam.
1278                                      m_dwAsyncSlotTimeout,
1279                                      EplDllkCbMnTimerCycle, 0L, FALSE);
1280                         }
1281 #endif
1282
1283                         break;
1284                 }
1285 #endif
1286
1287 #if EPL_DLL_PRES_READY_AFTER_SOA != FALSE
1288         case kEplEventTypeDllkPresReady:
1289                 {
1290                         // post PRes to transmit FIFO
1291
1292                         NmtState = EplNmtkGetNmtState();
1293
1294                         if (NmtState != kEplNmtCsBasicEthernet) {
1295                                 // Does PRes exist?
1296                                 if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_PRES].m_pbBuffer != NULL) {  // PRes does exist
1297                                         pTxFrame =
1298                                             (tEplFrame *) EplDllkInstance_g.
1299                                             m_pTxBuffer[EPL_DLLK_TXFRAME_PRES].
1300                                             m_pbBuffer;
1301                                         // update frame (NMT state, RD, RS, PR, MS, EN flags)
1302                                         if (NmtState < kEplNmtCsPreOperational2) {      // NMT state is not PreOp2, ReadyToOp or Op
1303                                                 // fake NMT state PreOp2, because PRes will be sent only in PreOp2 or greater
1304                                                 NmtState =
1305                                                     kEplNmtCsPreOperational2;
1306                                         }
1307                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.
1308                                                        m_le_bNmtStatus,
1309                                                        (u8) NmtState);
1310                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.
1311                                                        m_le_bFlag2,
1312                                                        EplDllkInstance_g.
1313                                                        m_bFlag2);
1314                                         if (NmtState != kEplNmtCsOperational) { // mark PDO as invalid in NMT state Op
1315                                                 // $$$ reset only RD flag; set other flags appropriately
1316                                                 AmiSetByteToLe(&pTxFrame->
1317                                                                m_Data.m_Pres.
1318                                                                m_le_bFlag1, 0);
1319                                         }
1320                                         // $$$ make function that updates Pres, StatusRes
1321                                         // mark PRes frame as ready for transmission
1322                                         Ret =
1323                                             EdrvTxMsgReady(&EplDllkInstance_g.
1324                                                            m_pTxBuffer
1325                                                            [EPL_DLLK_TXFRAME_PRES]);
1326                                 }
1327                         }
1328
1329                         break;
1330                 }
1331 #endif
1332         default:
1333                 {
1334                         ASSERTMSG(FALSE,
1335                                   "EplDllkProcess(): unhandled event type!\n");
1336                 }
1337         }
1338
1339       Exit:
1340         return Ret;
1341 }
1342
1343 //---------------------------------------------------------------------------
1344 //
1345 // Function:    EplDllkConfig
1346 //
1347 // Description: configure parameters of DLL
1348 //
1349 // Parameters:  pDllConfigParam_p       = configuration parameters
1350 //
1351 // Returns:     tEplKernel              = error code
1352 //
1353 //
1354 // State:
1355 //
1356 //---------------------------------------------------------------------------
1357
1358 tEplKernel EplDllkConfig(tEplDllConfigParam * pDllConfigParam_p)
1359 {
1360         tEplKernel Ret = kEplSuccessful;
1361
1362 // d.k. check of NMT state disabled, because CycleLen is programmed at run time by MN without reset of CN
1363 /*tEplNmtState    NmtState;
1364
1365     NmtState = EplNmtkGetNmtState();
1366
1367     if (NmtState > kEplNmtGsResetConfiguration)
1368     {   // only allowed in state DLL_GS_INIT
1369         Ret = kEplInvalidOperation;
1370         goto Exit;
1371     }
1372 */
1373         EPL_MEMCPY(&EplDllkInstance_g.m_DllConfigParam, pDllConfigParam_p,
1374                    (pDllConfigParam_p->m_uiSizeOfStruct <
1375                     sizeof(tEplDllConfigParam) ? pDllConfigParam_p->
1376                     m_uiSizeOfStruct : sizeof(tEplDllConfigParam)));
1377
1378         if ((EplDllkInstance_g.m_DllConfigParam.m_dwCycleLen != 0)
1379             && (EplDllkInstance_g.m_DllConfigParam.m_dwLossOfFrameTolerance != 0)) {    // monitor EPL cycle, calculate frame timeout
1380                 EplDllkInstance_g.m_ullFrameTimeout = (1000LL
1381                                                        *
1382                                                        ((unsigned long long)
1383                                                         EplDllkInstance_g.
1384                                                         m_DllConfigParam.
1385                                                         m_dwCycleLen))
1386                     +
1387                     ((unsigned long long)EplDllkInstance_g.m_DllConfigParam.
1388                      m_dwLossOfFrameTolerance);
1389         } else {
1390                 EplDllkInstance_g.m_ullFrameTimeout = 0LL;
1391         }
1392
1393         if (EplDllkInstance_g.m_DllConfigParam.m_fAsyncOnly != FALSE) { // it is configured as async-only CN
1394                 // disable multiplexed cycle, that m_uiCycleCount will not be incremented spuriously on SoC
1395                 EplDllkInstance_g.m_DllConfigParam.m_uiMultiplCycleCnt = 0;
1396         }
1397 //Exit:
1398         return Ret;
1399 }
1400
1401 //---------------------------------------------------------------------------
1402 //
1403 // Function:    EplDllkSetIdentity
1404 //
1405 // Description: configure identity of local node for IdentResponse
1406 //
1407 // Parameters:  pDllIdentParam_p        = identity
1408 //
1409 // Returns:     tEplKernel              = error code
1410 //
1411 //
1412 // State:
1413 //
1414 //---------------------------------------------------------------------------
1415
1416 tEplKernel EplDllkSetIdentity(tEplDllIdentParam * pDllIdentParam_p)
1417 {
1418         tEplKernel Ret = kEplSuccessful;
1419
1420         EPL_MEMCPY(&EplDllkInstance_g.m_DllIdentParam, pDllIdentParam_p,
1421                    (pDllIdentParam_p->m_uiSizeOfStruct <
1422                     sizeof(tEplDllIdentParam) ? pDllIdentParam_p->
1423                     m_uiSizeOfStruct : sizeof(tEplDllIdentParam)));
1424
1425         // $$$ if IdentResponse frame exists update it
1426
1427         return Ret;
1428 }
1429
1430 //---------------------------------------------------------------------------
1431 //
1432 // Function:    EplDllkRegAsyncHandler
1433 //
1434 // Description: registers handler for non-EPL frames
1435 //
1436 // Parameters:  pfnDllkCbAsync_p        = pointer to callback function
1437 //
1438 // Returns:     tEplKernel              = error code
1439 //
1440 //
1441 // State:
1442 //
1443 //---------------------------------------------------------------------------
1444
1445 tEplKernel EplDllkRegAsyncHandler(tEplDllkCbAsync pfnDllkCbAsync_p)
1446 {
1447         tEplKernel Ret = kEplSuccessful;
1448
1449         if (EplDllkInstance_g.m_pfnCbAsync == NULL) {   // no handler registered yet
1450                 EplDllkInstance_g.m_pfnCbAsync = pfnDllkCbAsync_p;
1451         } else {                // handler already registered
1452                 Ret = kEplDllCbAsyncRegistered;
1453         }
1454
1455         return Ret;
1456 }
1457
1458 //---------------------------------------------------------------------------
1459 //
1460 // Function:    EplDllkDeregAsyncHandler
1461 //
1462 // Description: deregisters handler for non-EPL frames
1463 //
1464 // Parameters:  pfnDllkCbAsync_p        = pointer to callback function
1465 //
1466 // Returns:     tEplKernel              = error code
1467 //
1468 //
1469 // State:
1470 //
1471 //---------------------------------------------------------------------------
1472
1473 tEplKernel EplDllkDeregAsyncHandler(tEplDllkCbAsync pfnDllkCbAsync_p)
1474 {
1475         tEplKernel Ret = kEplSuccessful;
1476
1477         if (EplDllkInstance_g.m_pfnCbAsync == pfnDllkCbAsync_p) {       // same handler is registered
1478                 // deregister it
1479                 EplDllkInstance_g.m_pfnCbAsync = NULL;
1480         } else {                // wrong handler or no handler registered
1481                 Ret = kEplDllCbAsyncRegistered;
1482         }
1483
1484         return Ret;
1485 }
1486
1487 //---------------------------------------------------------------------------
1488 //
1489 // Function:    EplDllkSetAsndServiceIdFilter()
1490 //
1491 // Description: sets the specified node ID filter for the specified
1492 //              AsndServiceId. It registers C_DLL_MULTICAST_ASND in ethernet
1493 //              driver if any AsndServiceId is open.
1494 //
1495 // Parameters:  ServiceId_p             = ASnd Service ID
1496 //              Filter_p                = node ID filter
1497 //
1498 // Returns:     tEplKernel              = error code
1499 //
1500 //
1501 // State:
1502 //
1503 //---------------------------------------------------------------------------
1504
1505 tEplKernel EplDllkSetAsndServiceIdFilter(tEplDllAsndServiceId ServiceId_p,
1506                                          tEplDllAsndFilter Filter_p)
1507 {
1508         tEplKernel Ret = kEplSuccessful;
1509
1510         if (ServiceId_p < tabentries(EplDllkInstance_g.m_aAsndFilter)) {
1511                 EplDllkInstance_g.m_aAsndFilter[ServiceId_p] = Filter_p;
1512         }
1513
1514         return Ret;
1515 }
1516
1517 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
1518
1519 //---------------------------------------------------------------------------
1520 //
1521 // Function:    EplDllkSetFlag1OfNode()
1522 //
1523 // Description: sets Flag1 (for PReq and SoA) of the specified node ID.
1524 //
1525 // Parameters:  uiNodeId_p              = node ID
1526 //              bSoaFlag1_p             = flag1
1527 //
1528 // Returns:     tEplKernel              = error code
1529 //
1530 //
1531 // State:
1532 //
1533 //---------------------------------------------------------------------------
1534
1535 tEplKernel EplDllkSetFlag1OfNode(unsigned int uiNodeId_p, u8 bSoaFlag1_p)
1536 {
1537         tEplKernel Ret = kEplSuccessful;
1538         tEplDllkNodeInfo *pNodeInfo;
1539
1540         pNodeInfo = EplDllkGetNodeInfo(uiNodeId_p);
1541         if (pNodeInfo == NULL) {        // no node info structure available
1542                 Ret = kEplDllNoNodeInfo;
1543                 goto Exit;
1544         }
1545         // store flag1 in internal node info structure
1546         pNodeInfo->m_bSoaFlag1 = bSoaFlag1_p;
1547
1548       Exit:
1549         return Ret;
1550 }
1551
1552 //---------------------------------------------------------------------------
1553 //
1554 // Function:    EplDllkGetFirstNodeInfo()
1555 //
1556 // Description: returns first info structure of first node in isochronous phase.
1557 //              It is only useful for ErrorHandlerk module.
1558 //
1559 // Parameters:  ppNodeInfo_p            = pointer to pointer of internal node info structure
1560 //
1561 // Returns:     tEplKernel              = error code
1562 //
1563 //
1564 // State:
1565 //
1566 //---------------------------------------------------------------------------
1567
1568 tEplKernel EplDllkGetFirstNodeInfo(tEplDllkNodeInfo ** ppNodeInfo_p)
1569 {
1570         tEplKernel Ret = kEplSuccessful;
1571
1572         *ppNodeInfo_p = EplDllkInstance_g.m_pFirstNodeInfo;
1573
1574         return Ret;
1575 }
1576
1577 //---------------------------------------------------------------------------
1578 //
1579 // Function:    EplDllkAddNode()
1580 //
1581 // Description: adds the specified node to the isochronous phase.
1582 //
1583 // Parameters:  pNodeInfo_p             = pointer of node info structure
1584 //
1585 // Returns:     tEplKernel              = error code
1586 //
1587 //
1588 // State:
1589 //
1590 //---------------------------------------------------------------------------
1591
1592 tEplKernel EplDllkAddNode(tEplDllNodeInfo * pNodeInfo_p)
1593 {
1594         tEplKernel Ret = kEplSuccessful;
1595         tEplDllkNodeInfo *pIntNodeInfo;
1596         tEplDllkNodeInfo **ppIntNodeInfo;
1597         unsigned int uiHandle;
1598         tEplFrame *pFrame;
1599         unsigned int uiFrameSize;
1600
1601         pIntNodeInfo = EplDllkGetNodeInfo(pNodeInfo_p->m_uiNodeId);
1602         if (pIntNodeInfo == NULL) {     // no node info structure available
1603                 Ret = kEplDllNoNodeInfo;
1604                 goto Exit;
1605         }
1606
1607         EPL_DLLK_DBG_POST_TRACE_VALUE(kEplEventTypeDllkAddNode,
1608                                       pNodeInfo_p->m_uiNodeId, 0);
1609
1610         // copy node configuration
1611         pIntNodeInfo->m_dwPresTimeout = pNodeInfo_p->m_dwPresTimeout;
1612         pIntNodeInfo->m_wPresPayloadLimit = pNodeInfo_p->m_wPresPayloadLimit;
1613
1614         // $$$ d.k.: actually add node only if MN. On CN it is sufficient to update the node configuration
1615         if (pNodeInfo_p->m_uiNodeId == EplDllkInstance_g.m_DllConfigParam.m_uiNodeId) { // we shall send PRes ourself
1616                 // insert our node at the end of the list
1617                 ppIntNodeInfo = &EplDllkInstance_g.m_pFirstNodeInfo;
1618                 while ((*ppIntNodeInfo != NULL)
1619                        && ((*ppIntNodeInfo)->m_pNextNodeInfo != NULL)) {
1620                         ppIntNodeInfo = &(*ppIntNodeInfo)->m_pNextNodeInfo;
1621                 }
1622                 if (*ppIntNodeInfo != NULL) {
1623                         if ((*ppIntNodeInfo)->m_uiNodeId == pNodeInfo_p->m_uiNodeId) {  // node was already added to list
1624                                 // $$$ d.k. maybe this should be an error
1625                                 goto Exit;
1626                         } else {        // add our node at the end of the list
1627                                 ppIntNodeInfo =
1628                                     &(*ppIntNodeInfo)->m_pNextNodeInfo;
1629                         }
1630                 }
1631                 // set "PReq"-TxBuffer to PRes-TxBuffer
1632                 pIntNodeInfo->m_pPreqTxBuffer =
1633                     &EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_PRES];
1634         } else {                // normal CN shall be added to isochronous phase
1635                 // insert node into list in ascending order
1636                 ppIntNodeInfo = &EplDllkInstance_g.m_pFirstNodeInfo;
1637                 while ((*ppIntNodeInfo != NULL)
1638                        && ((*ppIntNodeInfo)->m_uiNodeId <
1639                            pNodeInfo_p->m_uiNodeId)
1640                        && ((*ppIntNodeInfo)->m_uiNodeId !=
1641                            EplDllkInstance_g.m_DllConfigParam.m_uiNodeId)) {
1642                         ppIntNodeInfo = &(*ppIntNodeInfo)->m_pNextNodeInfo;
1643                 }
1644                 if ((*ppIntNodeInfo != NULL) && ((*ppIntNodeInfo)->m_uiNodeId == pNodeInfo_p->m_uiNodeId)) {    // node was already added to list
1645                         // $$$ d.k. maybe this should be an error
1646                         goto Exit;
1647                 }
1648         }
1649
1650         // initialize elements of internal node info structure
1651         pIntNodeInfo->m_bSoaFlag1 = 0;
1652         pIntNodeInfo->m_fSoftDelete = FALSE;
1653         pIntNodeInfo->m_NmtState = kEplNmtCsNotActive;
1654         if (pIntNodeInfo->m_pPreqTxBuffer == NULL) {    // create TxBuffer entry
1655                 uiFrameSize = pNodeInfo_p->m_wPreqPayloadLimit + 24;
1656                 Ret =
1657                     EplDllkCreateTxFrame(&uiHandle, &pFrame, &uiFrameSize,
1658                                          kEplMsgTypePreq,
1659                                          kEplDllAsndNotDefined);
1660                 if (Ret != kEplSuccessful) {
1661                         goto Exit;
1662                 }
1663                 pIntNodeInfo->m_pPreqTxBuffer =
1664                     &EplDllkInstance_g.m_pTxBuffer[uiHandle];
1665                 AmiSetByteToLe(&pFrame->m_le_bDstNodeId,
1666                                (u8) pNodeInfo_p->m_uiNodeId);
1667
1668                 // set up destination MAC address
1669                 EPL_MEMCPY(pFrame->m_be_abDstMac, pIntNodeInfo->m_be_abMacAddr,
1670                            6);
1671
1672 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOK)) != 0)
1673                 {
1674                         tEplFrameInfo FrameInfo;
1675
1676                         // initially encode TPDO -> inform PDO module
1677                         FrameInfo.m_pFrame = pFrame;
1678                         FrameInfo.m_uiFrameSize = uiFrameSize;
1679                         Ret = EplPdokCbPdoTransmitted(&FrameInfo);
1680                 }
1681 #endif
1682         }
1683         pIntNodeInfo->m_ulDllErrorEvents = 0L;
1684         // add node to list
1685         pIntNodeInfo->m_pNextNodeInfo = *ppIntNodeInfo;
1686         *ppIntNodeInfo = pIntNodeInfo;
1687
1688       Exit:
1689         return Ret;
1690 }
1691
1692 //---------------------------------------------------------------------------
1693 //
1694 // Function:    EplDllkDeleteNode()
1695 //
1696 // Description: removes the specified node from the isochronous phase.
1697 //
1698 // Parameters:  uiNodeId_p              = node ID
1699 //
1700 // Returns:     tEplKernel              = error code
1701 //
1702 //
1703 // State:
1704 //
1705 //---------------------------------------------------------------------------
1706
1707 tEplKernel EplDllkDeleteNode(unsigned int uiNodeId_p)
1708 {
1709         tEplKernel Ret = kEplSuccessful;
1710         tEplDllkNodeInfo *pIntNodeInfo;
1711         tEplDllkNodeInfo **ppIntNodeInfo;
1712         unsigned int uiHandle;
1713
1714         pIntNodeInfo = EplDllkGetNodeInfo(uiNodeId_p);
1715         if (pIntNodeInfo == NULL) {     // no node info structure available
1716                 Ret = kEplDllNoNodeInfo;
1717                 goto Exit;
1718         }
1719
1720         EPL_DLLK_DBG_POST_TRACE_VALUE(kEplEventTypeDllkDelNode, uiNodeId_p, 0);
1721
1722         // search node in whole list
1723         ppIntNodeInfo = &EplDllkInstance_g.m_pFirstNodeInfo;
1724         while ((*ppIntNodeInfo != NULL)
1725                && ((*ppIntNodeInfo)->m_uiNodeId != uiNodeId_p)) {
1726                 ppIntNodeInfo = &(*ppIntNodeInfo)->m_pNextNodeInfo;
1727         }
1728         if ((*ppIntNodeInfo == NULL) || ((*ppIntNodeInfo)->m_uiNodeId != uiNodeId_p)) { // node was not found in list
1729                 // $$$ d.k. maybe this should be an error
1730                 goto Exit;
1731         }
1732         // remove node from list
1733         *ppIntNodeInfo = pIntNodeInfo->m_pNextNodeInfo;
1734
1735         if ((pIntNodeInfo->m_pPreqTxBuffer != NULL)
1736             && (pIntNodeInfo->m_pPreqTxBuffer != &EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_PRES])) {      // delete TxBuffer entry
1737                 uiHandle =
1738                     pIntNodeInfo->m_pPreqTxBuffer -
1739                     EplDllkInstance_g.m_pTxBuffer;
1740                 pIntNodeInfo->m_pPreqTxBuffer = NULL;
1741                 Ret = EplDllkDeleteTxFrame(uiHandle);
1742 /*        if (Ret != kEplSuccessful)
1743         {
1744             goto Exit;
1745         }*/
1746         }
1747
1748       Exit:
1749         return Ret;
1750 }
1751
1752 //---------------------------------------------------------------------------
1753 //
1754 // Function:    EplDllkSoftDeleteNode()
1755 //
1756 // Description: removes the specified node not immediately from the isochronous phase.
1757 //              Instead the will be removed after error (late/loss PRes) without
1758 //              charging the error.
1759 //
1760 // Parameters:  uiNodeId_p              = node ID
1761 //
1762 // Returns:     tEplKernel              = error code
1763 //
1764 //
1765 // State:
1766 //
1767 //---------------------------------------------------------------------------
1768
1769 tEplKernel EplDllkSoftDeleteNode(unsigned int uiNodeId_p)
1770 {
1771         tEplKernel Ret = kEplSuccessful;
1772         tEplDllkNodeInfo *pIntNodeInfo;
1773
1774         pIntNodeInfo = EplDllkGetNodeInfo(uiNodeId_p);
1775         if (pIntNodeInfo == NULL) {     // no node info structure available
1776                 Ret = kEplDllNoNodeInfo;
1777                 goto Exit;
1778         }
1779
1780         EPL_DLLK_DBG_POST_TRACE_VALUE(kEplEventTypeDllkSoftDelNode,
1781                                       uiNodeId_p, 0);
1782
1783         pIntNodeInfo->m_fSoftDelete = TRUE;
1784
1785       Exit:
1786         return Ret;
1787 }
1788
1789 #endif //(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
1790
1791 //=========================================================================//
1792 //                                                                         //
1793 //          P R I V A T E   F U N C T I O N S                              //
1794 //                                                                         //
1795 //=========================================================================//
1796
1797 //---------------------------------------------------------------------------
1798 //
1799 // Function:    EplDllkChangeState
1800 //
1801 // Description: change DLL state on event and diagnose some communication errors
1802 //
1803 // Parameters:  NmtEvent_p              = DLL event (wrapped in NMT event)
1804 //
1805 // Returns:     tEplKernel              = error code
1806 //
1807 //
1808 // State:
1809 //
1810 //---------------------------------------------------------------------------
1811
1812 static tEplKernel EplDllkChangeState(tEplNmtEvent NmtEvent_p,
1813                                      tEplNmtState NmtState_p)
1814 {
1815         tEplKernel Ret = kEplSuccessful;
1816         tEplEvent Event;
1817         tEplErrorHandlerkEvent DllEvent;
1818
1819         DllEvent.m_ulDllErrorEvents = 0;
1820         DllEvent.m_uiNodeId = 0;
1821         DllEvent.m_NmtState = NmtState_p;
1822
1823         switch (NmtState_p) {
1824         case kEplNmtGsOff:
1825         case kEplNmtGsInitialising:
1826         case kEplNmtGsResetApplication:
1827         case kEplNmtGsResetCommunication:
1828         case kEplNmtGsResetConfiguration:
1829         case kEplNmtCsBasicEthernet:
1830                 // enter DLL_GS_INIT
1831                 EplDllkInstance_g.m_DllState = kEplDllGsInit;
1832                 break;
1833
1834         case kEplNmtCsNotActive:
1835         case kEplNmtCsPreOperational1:
1836                 // reduced EPL cycle is active
1837                 if (NmtEvent_p == kEplNmtEventDllCeSoc) {       // SoC received
1838                         // enter DLL_CS_WAIT_PREQ
1839                         EplDllkInstance_g.m_DllState = kEplDllCsWaitPreq;
1840                 } else {
1841                         // enter DLL_GS_INIT
1842                         EplDllkInstance_g.m_DllState = kEplDllGsInit;
1843                 }
1844                 break;
1845
1846         case kEplNmtCsPreOperational2:
1847         case kEplNmtCsReadyToOperate:
1848         case kEplNmtCsOperational:
1849                 // full EPL cycle is active
1850
1851                 switch (EplDllkInstance_g.m_DllState) {
1852                 case kEplDllCsWaitPreq:
1853                         switch (NmtEvent_p) {
1854                                 // DLL_CT2
1855                         case kEplNmtEventDllCePreq:
1856                                 // enter DLL_CS_WAIT_SOA
1857                                 DllEvent.m_ulDllErrorEvents |=
1858                                     EPL_DLL_ERR_CN_RECVD_PREQ;
1859                                 EplDllkInstance_g.m_DllState = kEplDllCsWaitSoa;
1860                                 break;
1861
1862                                 // DLL_CT8
1863                         case kEplNmtEventDllCeFrameTimeout:
1864                                 if (NmtState_p == kEplNmtCsPreOperational2) {   // ignore frame timeout in PreOp2,
1865                                         // because the previously configured cycle len
1866                                         // may be wrong.
1867                                         // 2008/10/15 d.k. If it would not be ignored,
1868                                         // we would go cyclically to PreOp1 and on next
1869                                         // SoC back to PreOp2.
1870                                         break;
1871                                 }
1872                                 // report DLL_CEV_LOSS_SOC and DLL_CEV_LOSS_SOA
1873                                 DllEvent.m_ulDllErrorEvents |=
1874                                     EPL_DLL_ERR_CN_LOSS_SOA |
1875                                     EPL_DLL_ERR_CN_LOSS_SOC;
1876
1877                                 // enter DLL_CS_WAIT_SOC
1878                                 EplDllkInstance_g.m_DllState = kEplDllCsWaitSoc;
1879                                 break;
1880
1881                         case kEplNmtEventDllCeSoa:
1882                                 // check if multiplexed and PReq should have been received in this cycle
1883                                 // and if >= NMT_CS_READY_TO_OPERATE
1884                                 if ((EplDllkInstance_g.m_uiCycleCount == 0)
1885                                     && (NmtState_p >= kEplNmtCsReadyToOperate)) {       // report DLL_CEV_LOSS_OF_PREQ
1886                                         DllEvent.m_ulDllErrorEvents |=
1887                                             EPL_DLL_ERR_CN_LOSS_PREQ;
1888                                 }
1889                                 // enter DLL_CS_WAIT_SOC
1890                                 EplDllkInstance_g.m_DllState = kEplDllCsWaitSoc;
1891                                 break;
1892
1893                                 // DLL_CT7
1894                         case kEplNmtEventDllCeSoc:
1895                         case kEplNmtEventDllCeAsnd:
1896                                 // report DLL_CEV_LOSS_SOA
1897                                 DllEvent.m_ulDllErrorEvents |=
1898                                     EPL_DLL_ERR_CN_LOSS_SOA;
1899
1900                         case kEplNmtEventDllCePres:
1901                         default:
1902                                 // remain in this state
1903                                 break;
1904                         }
1905                         break;
1906
1907                 case kEplDllCsWaitSoc:
1908                         switch (NmtEvent_p) {
1909                                 // DLL_CT1
1910                         case kEplNmtEventDllCeSoc:
1911                                 // start of cycle and isochronous phase
1912                                 // enter DLL_CS_WAIT_PREQ
1913                                 EplDllkInstance_g.m_DllState =
1914                                     kEplDllCsWaitPreq;
1915                                 break;
1916
1917                                 // DLL_CT4
1918 //                        case kEplNmtEventDllCePres:
1919                         case kEplNmtEventDllCeFrameTimeout:
1920                                 if (NmtState_p == kEplNmtCsPreOperational2) {   // ignore frame timeout in PreOp2,
1921                                         // because the previously configured cycle len
1922                                         // may be wrong.
1923                                         // 2008/10/15 d.k. If it would not be ignored,
1924                                         // we would go cyclically to PreOp1 and on next
1925                                         // SoC back to PreOp2.
1926                                         break;
1927                                 }
1928                                 // fall through
1929
1930                         case kEplNmtEventDllCePreq:
1931                         case kEplNmtEventDllCeSoa:
1932                                 // report DLL_CEV_LOSS_SOC
1933                                 DllEvent.m_ulDllErrorEvents |=
1934                                     EPL_DLL_ERR_CN_LOSS_SOC;
1935
1936                         case kEplNmtEventDllCeAsnd:
1937                         default:
1938                                 // remain in this state
1939                                 break;
1940                         }
1941                         break;
1942
1943                 case kEplDllCsWaitSoa:
1944                         switch (NmtEvent_p) {
1945                         case kEplNmtEventDllCeFrameTimeout:
1946                                 // DLL_CT3
1947                                 if (NmtState_p == kEplNmtCsPreOperational2) {   // ignore frame timeout in PreOp2,
1948                                         // because the previously configured cycle len
1949                                         // may be wrong.
1950                                         // 2008/10/15 d.k. If it would not be ignored,
1951                                         // we would go cyclically to PreOp1 and on next
1952                                         // SoC back to PreOp2.
1953                                         break;
1954                                 }
1955                                 // fall through
1956
1957                         case kEplNmtEventDllCePreq:
1958                                 // report DLL_CEV_LOSS_SOC and DLL_CEV_LOSS_SOA
1959                                 DllEvent.m_ulDllErrorEvents |=
1960                                     EPL_DLL_ERR_CN_LOSS_SOA |
1961                                     EPL_DLL_ERR_CN_LOSS_SOC;
1962
1963                         case kEplNmtEventDllCeSoa:
1964                                 // enter DLL_CS_WAIT_SOC
1965                                 EplDllkInstance_g.m_DllState = kEplDllCsWaitSoc;
1966                                 break;
1967
1968                                 // DLL_CT9
1969                         case kEplNmtEventDllCeSoc:
1970                                 // report DLL_CEV_LOSS_SOA
1971                                 DllEvent.m_ulDllErrorEvents |=
1972                                     EPL_DLL_ERR_CN_LOSS_SOA;
1973
1974                                 // enter DLL_CS_WAIT_PREQ
1975                                 EplDllkInstance_g.m_DllState =
1976                                     kEplDllCsWaitPreq;
1977                                 break;
1978
1979                                 // DLL_CT10
1980                         case kEplNmtEventDllCeAsnd:
1981                                 // report DLL_CEV_LOSS_SOA
1982                                 DllEvent.m_ulDllErrorEvents |=
1983                                     EPL_DLL_ERR_CN_LOSS_SOA;
1984
1985                         case kEplNmtEventDllCePres:
1986                         default:
1987                                 // remain in this state
1988                                 break;
1989                         }
1990                         break;
1991
1992                 case kEplDllGsInit:
1993                         // enter DLL_CS_WAIT_PREQ
1994                         EplDllkInstance_g.m_DllState = kEplDllCsWaitPreq;
1995                         break;
1996
1997                 default:
1998                         break;
1999                 }
2000                 break;
2001
2002         case kEplNmtCsStopped:
2003                 // full EPL cycle is active, but without PReq/PRes
2004
2005                 switch (EplDllkInstance_g.m_DllState) {
2006                 case kEplDllCsWaitPreq:
2007                         switch (NmtEvent_p) {
2008                                 // DLL_CT2
2009                         case kEplNmtEventDllCePreq:
2010                                 // enter DLL_CS_WAIT_SOA
2011                                 EplDllkInstance_g.m_DllState = kEplDllCsWaitSoa;
2012                                 break;
2013
2014                                 // DLL_CT8
2015                         case kEplNmtEventDllCeFrameTimeout:
2016                                 // report DLL_CEV_LOSS_SOC and DLL_CEV_LOSS_SOA
2017                                 DllEvent.m_ulDllErrorEvents |=
2018                                     EPL_DLL_ERR_CN_LOSS_SOA |
2019                                     EPL_DLL_ERR_CN_LOSS_SOC;
2020
2021                         case kEplNmtEventDllCeSoa:
2022                                 // NMT_CS_STOPPED active
2023                                 // it is Ok if no PReq was received
2024
2025                                 // enter DLL_CS_WAIT_SOC
2026                                 EplDllkInstance_g.m_DllState = kEplDllCsWaitSoc;
2027                                 break;
2028
2029                                 // DLL_CT7
2030                         case kEplNmtEventDllCeSoc:
2031                         case kEplNmtEventDllCeAsnd:
2032                                 // report DLL_CEV_LOSS_SOA
2033                                 DllEvent.m_ulDllErrorEvents |=
2034                                     EPL_DLL_ERR_CN_LOSS_SOA;
2035
2036                         case kEplNmtEventDllCePres:
2037                         default:
2038                                 // remain in this state
2039                                 break;
2040                         }
2041                         break;
2042
2043                 case kEplDllCsWaitSoc:
2044                         switch (NmtEvent_p) {
2045                                 // DLL_CT1
2046                         case kEplNmtEventDllCeSoc:
2047                                 // start of cycle and isochronous phase
2048                                 // enter DLL_CS_WAIT_SOA
2049                                 EplDllkInstance_g.m_DllState = kEplDllCsWaitSoa;
2050                                 break;
2051
2052                                 // DLL_CT4
2053 //                        case kEplNmtEventDllCePres:
2054                         case kEplNmtEventDllCePreq:
2055                         case kEplNmtEventDllCeSoa:
2056                         case kEplNmtEventDllCeFrameTimeout:
2057                                 // report DLL_CEV_LOSS_SOC
2058                                 DllEvent.m_ulDllErrorEvents |=
2059                                     EPL_DLL_ERR_CN_LOSS_SOC;
2060
2061                         case kEplNmtEventDllCeAsnd:
2062                         default:
2063                                 // remain in this state
2064                                 break;
2065                         }
2066                         break;
2067
2068                 case kEplDllCsWaitSoa:
2069                         switch (NmtEvent_p) {
2070                                 // DLL_CT3
2071                         case kEplNmtEventDllCeFrameTimeout:
2072                                 // report DLL_CEV_LOSS_SOC and DLL_CEV_LOSS_SOA
2073                                 DllEvent.m_ulDllErrorEvents |=
2074                                     EPL_DLL_ERR_CN_LOSS_SOA |
2075                                     EPL_DLL_ERR_CN_LOSS_SOC;
2076
2077                         case kEplNmtEventDllCeSoa:
2078                                 // enter DLL_CS_WAIT_SOC
2079                                 EplDllkInstance_g.m_DllState = kEplDllCsWaitSoc;
2080                                 break;
2081
2082                                 // DLL_CT9
2083                         case kEplNmtEventDllCeSoc:
2084                                 // report DLL_CEV_LOSS_SOA
2085                                 DllEvent.m_ulDllErrorEvents |=
2086                                     EPL_DLL_ERR_CN_LOSS_SOA;
2087                                 // remain in DLL_CS_WAIT_SOA
2088                                 break;
2089
2090                                 // DLL_CT10
2091                         case kEplNmtEventDllCeAsnd:
2092                                 // report DLL_CEV_LOSS_SOA
2093                                 DllEvent.m_ulDllErrorEvents |=
2094                                     EPL_DLL_ERR_CN_LOSS_SOA;
2095
2096                         case kEplNmtEventDllCePreq:
2097                                 // NMT_CS_STOPPED active and we do not expect any PReq
2098                                 // so just ignore it
2099                         case kEplNmtEventDllCePres:
2100                         default:
2101                                 // remain in this state
2102                                 break;
2103                         }
2104                         break;
2105
2106                 case kEplDllGsInit:
2107                 default:
2108                         // enter DLL_CS_WAIT_PREQ
2109                         EplDllkInstance_g.m_DllState = kEplDllCsWaitSoa;
2110                         break;
2111                 }
2112                 break;
2113
2114 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
2115         case kEplNmtMsNotActive:
2116         case kEplNmtMsBasicEthernet:
2117                 break;
2118
2119         case kEplNmtMsPreOperational1:
2120                 // reduced EPL cycle is active
2121                 if (EplDllkInstance_g.m_DllState != kEplDllMsNonCyclic) {       // stop cycle timer
2122 #if EPL_TIMER_USE_HIGHRES != FALSE
2123                         Ret =
2124                             EplTimerHighReskDeleteTimer(&EplDllkInstance_g.
2125                                                         m_TimerHdlCycle);
2126 #endif
2127                         EplDllkInstance_g.m_DllState = kEplDllMsNonCyclic;
2128
2129                         // stop further processing,
2130                         // because it will be restarted by NMT MN module
2131                         break;
2132                 }
2133
2134                 switch (NmtEvent_p) {
2135                 case kEplNmtEventDllMeSocTrig:
2136                 case kEplNmtEventDllCeAsnd:
2137                         {       // because of reduced EPL cycle SoA shall be triggered, not SoC
2138                                 tEplDllState DummyDllState;
2139
2140                                 Ret =
2141                                     EplDllkAsyncFrameNotReceived
2142                                     (EplDllkInstance_g.m_LastReqServiceId,
2143                                      EplDllkInstance_g.m_uiLastTargetNodeId);
2144
2145                                 // go ahead and send SoA
2146                                 Ret = EplDllkMnSendSoa(NmtState_p,
2147                                                        &DummyDllState,
2148                                                        (EplDllkInstance_g.
2149                                                         m_uiCycleCount >=
2150                                                         EPL_C_DLL_PREOP1_START_CYCLES));
2151                                 // increment cycle counter to detect if EPL_C_DLL_PREOP1_START_CYCLES empty cycles are elapsed
2152                                 EplDllkInstance_g.m_uiCycleCount++;
2153
2154                                 // reprogram timer
2155 #if EPL_TIMER_USE_HIGHRES != FALSE
2156                                 if (EplDllkInstance_g.m_DllConfigParam.
2157                                     m_dwAsyncSlotTimeout != 0) {
2158                                         Ret =
2159                                             EplTimerHighReskModifyTimerNs
2160                                             (&EplDllkInstance_g.m_TimerHdlCycle,
2161                                              EplDllkInstance_g.m_DllConfigParam.
2162                                              m_dwAsyncSlotTimeout,
2163                                              EplDllkCbMnTimerCycle, 0L, FALSE);
2164                                 }
2165 #endif
2166                                 break;
2167                         }
2168
2169                 default:
2170                         break;
2171                 }
2172                 break;
2173
2174         case kEplNmtMsPreOperational2:
2175         case kEplNmtMsReadyToOperate:
2176         case kEplNmtMsOperational:
2177                 // full EPL cycle is active
2178                 switch (NmtEvent_p) {
2179                 case kEplNmtEventDllMeSocTrig:
2180                         {
2181                                 // update cycle counter
2182                                 if (EplDllkInstance_g.m_DllConfigParam.m_uiMultiplCycleCnt > 0) {       // multiplexed cycle active
2183                                         EplDllkInstance_g.m_uiCycleCount =
2184                                             (EplDllkInstance_g.m_uiCycleCount +
2185                                              1) %
2186                                             EplDllkInstance_g.m_DllConfigParam.
2187                                             m_uiMultiplCycleCnt;
2188                                         // $$$ check multiplexed cycle restart
2189                                         //     -> toggle MC flag
2190                                         //     -> change node linked list
2191                                 } else {        // non-multiplexed cycle active
2192                                         // start with first node in isochronous phase
2193                                         EplDllkInstance_g.m_pCurNodeInfo = NULL;
2194                                 }
2195
2196                                 switch (EplDllkInstance_g.m_DllState) {
2197                                 case kEplDllMsNonCyclic:
2198                                         {       // start continuous cycle timer
2199 #if EPL_TIMER_USE_HIGHRES != FALSE
2200                                                 Ret =
2201                                                     EplTimerHighReskModifyTimerNs
2202                                                     (&EplDllkInstance_g.
2203                                                      m_TimerHdlCycle,
2204                                                      EplDllkInstance_g.
2205                                                      m_ullFrameTimeout,
2206                                                      EplDllkCbMnTimerCycle, 0L,
2207                                                      TRUE);
2208 #endif
2209                                                 // continue with sending SoC
2210                                         }
2211
2212                                 case kEplDllMsWaitAsnd:
2213                                 case kEplDllMsWaitSocTrig:
2214                                         {       // if m_LastReqServiceId is still valid,
2215                                                 // SoA was not correctly answered
2216                                                 // and user part has to be informed
2217                                                 Ret =
2218                                                     EplDllkAsyncFrameNotReceived
2219                                                     (EplDllkInstance_g.
2220                                                      m_LastReqServiceId,
2221                                                      EplDllkInstance_g.
2222                                                      m_uiLastTargetNodeId);
2223
2224                                                 // send SoC
2225                                                 Ret = EplDllkMnSendSoc();
2226
2227                                                 // new DLL state
2228                                                 EplDllkInstance_g.m_DllState =
2229                                                     kEplDllMsWaitPreqTrig;
2230
2231                                                 // start WaitSoCPReq Timer
2232 #if EPL_TIMER_USE_HIGHRES != FALSE
2233                                                 Ret =
2234                                                     EplTimerHighReskModifyTimerNs
2235                                                     (&EplDllkInstance_g.
2236                                                      m_TimerHdlResponse,
2237                                                      EplDllkInstance_g.
2238                                                      m_DllConfigParam.
2239                                                      m_dwWaitSocPreq,
2240                                                      EplDllkCbMnTimerResponse,
2241                                                      0L, FALSE);
2242 #endif
2243                                                 break;
2244                                         }
2245
2246                                 default:
2247                                         {       // wrong DLL state / cycle time exceeded
2248                                                 DllEvent.m_ulDllErrorEvents |=
2249                                                     EPL_DLL_ERR_MN_CYCTIMEEXCEED;
2250                                                 EplDllkInstance_g.m_DllState =
2251                                                     kEplDllMsWaitSocTrig;
2252                                                 break;
2253                                         }
2254                                 }
2255
2256                                 break;
2257                         }
2258
2259                 case kEplNmtEventDllMePresTimeout:
2260                         {
2261
2262                                 switch (EplDllkInstance_g.m_DllState) {
2263                                 case kEplDllMsWaitPres:
2264                                         {       // PRes not received
2265
2266                                                 if (EplDllkInstance_g.m_pCurNodeInfo->m_fSoftDelete == FALSE) { // normal isochronous CN
2267                                                         DllEvent.
2268                                                             m_ulDllErrorEvents
2269                                                             |=
2270                                                             EPL_DLL_ERR_MN_CN_LOSS_PRES;
2271                                                         DllEvent.m_uiNodeId =
2272                                                             EplDllkInstance_g.
2273                                                             m_pCurNodeInfo->
2274                                                             m_uiNodeId;
2275                                                 } else {        // CN shall be deleted softly
2276                                                         Event.m_EventSink =
2277                                                             kEplEventSinkDllkCal;
2278                                                         Event.m_EventType =
2279                                                             kEplEventTypeDllkSoftDelNode;
2280                                                         // $$$ d.k. set Event.m_NetTime to current time
2281                                                         Event.m_uiSize =
2282                                                             sizeof(unsigned
2283                                                                    int);
2284                                                         Event.m_pArg =
2285                                                             &EplDllkInstance_g.
2286                                                             m_pCurNodeInfo->
2287                                                             m_uiNodeId;
2288                                                         Ret =
2289                                                             EplEventkPost
2290                                                             (&Event);
2291                                                 }
2292
2293                                                 // continue with sending next PReq
2294                                         }
2295
2296                                 case kEplDllMsWaitPreqTrig:
2297                                         {
2298                                                 // send next PReq
2299                                                 Ret =
2300                                                     EplDllkMnSendPreq
2301                                                     (NmtState_p,
2302                                                      &EplDllkInstance_g.
2303                                                      m_DllState);
2304
2305                                                 break;
2306                                         }
2307
2308                                 default:
2309                                         {       // wrong DLL state
2310                                                 break;
2311                                         }
2312                                 }
2313
2314                                 break;
2315                         }
2316
2317                 case kEplNmtEventDllCePres:
2318                         {
2319
2320                                 switch (EplDllkInstance_g.m_DllState) {
2321                                 case kEplDllMsWaitPres:
2322                                         {       // PRes received
2323                                                 // send next PReq
2324                                                 Ret =
2325                                                     EplDllkMnSendPreq
2326                                                     (NmtState_p,
2327                                                      &EplDllkInstance_g.
2328                                                      m_DllState);
2329
2330                                                 break;
2331                                         }
2332
2333                                 default:
2334                                         {       // wrong DLL state
2335                                                 break;
2336                                         }
2337                                 }
2338
2339                                 break;
2340                         }
2341
2342                 case kEplNmtEventDllMeSoaTrig:
2343                         {
2344
2345                                 switch (EplDllkInstance_g.m_DllState) {
2346                                 case kEplDllMsWaitSoaTrig:
2347                                         {       // MN PRes sent
2348                                                 // send SoA
2349                                                 Ret =
2350                                                     EplDllkMnSendSoa(NmtState_p,
2351                                                                      &EplDllkInstance_g.
2352                                                                      m_DllState,
2353                                                                      TRUE);
2354
2355                                                 break;
2356                                         }
2357
2358                                 default:
2359                                         {       // wrong DLL state
2360                                                 break;
2361                                         }
2362                                 }
2363
2364                                 break;
2365                         }
2366
2367                 case kEplNmtEventDllCeAsnd:
2368                         {       // ASnd has been received, but it may be not the requested one
2369 /*
2370                     // report if SoA was correctly answered
2371                     Ret = EplDllkAsyncFrameNotReceived(EplDllkInstance_g.m_LastReqServiceId,
2372                                                        EplDllkInstance_g.m_uiLastTargetNodeId);
2373 */
2374                                 if (EplDllkInstance_g.m_DllState ==
2375                                     kEplDllMsWaitAsnd) {
2376                                         EplDllkInstance_g.m_DllState =
2377                                             kEplDllMsWaitSocTrig;
2378                                 }
2379                                 break;
2380                         }
2381
2382                 default:
2383                         break;
2384                 }
2385                 break;
2386 #endif //(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
2387
2388         default:
2389                 break;
2390         }
2391
2392         if (DllEvent.m_ulDllErrorEvents != 0) { // error event set -> post it to error handler
2393                 Event.m_EventSink = kEplEventSinkErrk;
2394                 Event.m_EventType = kEplEventTypeDllError;
2395                 // $$$ d.k. set Event.m_NetTime to current time
2396                 Event.m_uiSize = sizeof(DllEvent);
2397                 Event.m_pArg = &DllEvent;
2398                 Ret = EplEventkPost(&Event);
2399         }
2400
2401         return Ret;
2402 }
2403
2404 //---------------------------------------------------------------------------
2405 //
2406 // Function:    EplDllkCbFrameReceived()
2407 //
2408 // Description: called from EdrvInterruptHandler()
2409 //
2410 // Parameters:  pRxBuffer_p             = receive buffer structure
2411 //
2412 // Returns:     (none)
2413 //
2414 //
2415 // State:
2416 //
2417 //---------------------------------------------------------------------------
2418
2419 static void EplDllkCbFrameReceived(tEdrvRxBuffer * pRxBuffer_p)
2420 {
2421         tEplKernel Ret = kEplSuccessful;
2422         tEplNmtState NmtState;
2423         tEplNmtEvent NmtEvent = kEplNmtEventNoEvent;
2424         tEplEvent Event;
2425         tEplFrame *pFrame;
2426         tEplFrame *pTxFrame;
2427         tEdrvTxBuffer *pTxBuffer = NULL;
2428         tEplFrameInfo FrameInfo;
2429         tEplMsgType MsgType;
2430         tEplDllReqServiceId ReqServiceId;
2431         unsigned int uiAsndServiceId;
2432         unsigned int uiNodeId;
2433         u8 bFlag1;
2434
2435         BENCHMARK_MOD_02_SET(3);
2436         NmtState = EplNmtkGetNmtState();
2437
2438         if (NmtState <= kEplNmtGsResetConfiguration) {
2439                 goto Exit;
2440         }
2441
2442         pFrame = (tEplFrame *) pRxBuffer_p->m_pbBuffer;
2443
2444 #if EDRV_EARLY_RX_INT != FALSE
2445         switch (pRxBuffer_p->m_BufferInFrame) {
2446         case kEdrvBufferFirstInFrame:
2447                 {
2448                         MsgType =
2449                             (tEplMsgType) AmiGetByteFromLe(&pFrame->
2450                                                            m_le_bMessageType);
2451                         if (MsgType == kEplMsgTypePreq) {
2452                                 if (EplDllkInstance_g.m_DllState == kEplDllCsWaitPreq) {        // PReq expected and actually received
2453                                         // d.k.: The condition above is sufficent, because EPL cycle is active
2454                                         //       and no non-EPL frame shall be received in isochronous phase.
2455                                         // start transmission PRes
2456                                         // $$$ What if Tx buffer is invalid?
2457                                         pTxBuffer =
2458                                             &EplDllkInstance_g.
2459                                             m_pTxBuffer[EPL_DLLK_TXFRAME_PRES];
2460 #if (EPL_DLL_PRES_READY_AFTER_SOA != FALSE) || (EPL_DLL_PRES_READY_AFTER_SOC != FALSE)
2461                                         Ret = EdrvTxMsgStart(pTxBuffer);
2462 #else
2463                                         pTxFrame =
2464                                             (tEplFrame *) pTxBuffer->m_pbBuffer;
2465                                         // update frame (NMT state, RD, RS, PR, MS, EN flags)
2466                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.
2467                                                        m_le_bNmtStatus,
2468                                                        (u8) NmtState);
2469                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.
2470                                                        m_le_bFlag2,
2471                                                        EplDllkInstance_g.
2472                                                        m_bFlag2);
2473                                         if (NmtState != kEplNmtCsOperational) { // mark PDO as invalid in NMT state Op
2474                                                 // $$$ reset only RD flag; set other flags appropriately
2475                                                 AmiSetByteToLe(&pTxFrame->
2476                                                                m_Data.m_Pres.
2477                                                                m_le_bFlag1, 0);
2478                                         }
2479                                         // $$$ make function that updates Pres, StatusRes
2480                                         // send PRes frame
2481                                         Ret = EdrvSendTxMsg(pTxBuffer);
2482 #endif
2483                                 }
2484                         }
2485                         goto Exit;
2486                 }
2487
2488         case kEdrvBufferMiddleInFrame:
2489                 {
2490                         goto Exit;
2491                 }
2492
2493         case kEdrvBufferLastInFrame:
2494                 {
2495                         break;
2496                 }
2497         }
2498 #endif
2499
2500         FrameInfo.m_pFrame = pFrame;
2501         FrameInfo.m_uiFrameSize = pRxBuffer_p->m_uiRxMsgLen;
2502         FrameInfo.m_NetTime.m_dwNanoSec = pRxBuffer_p->m_NetTime.m_dwNanoSec;
2503         FrameInfo.m_NetTime.m_dwSec = pRxBuffer_p->m_NetTime.m_dwSec;
2504
2505         if (AmiGetWordFromBe(&pFrame->m_be_wEtherType) != EPL_C_DLL_ETHERTYPE_EPL) {    // non-EPL frame
2506                 //TRACE2("EplDllkCbFrameReceived: pfnCbAsync=0x%p SrcMAC=0x%llx\n", EplDllkInstance_g.m_pfnCbAsync, AmiGetQword48FromBe(pFrame->m_be_abSrcMac));
2507                 if (EplDllkInstance_g.m_pfnCbAsync != NULL) {   // handler for async frames is registered
2508                         EplDllkInstance_g.m_pfnCbAsync(&FrameInfo);
2509                 }
2510
2511                 goto Exit;
2512         }
2513
2514         MsgType = (tEplMsgType) AmiGetByteFromLe(&pFrame->m_le_bMessageType);
2515         switch (MsgType) {
2516         case kEplMsgTypePreq:
2517                 {
2518                         // PReq frame
2519                         // d.k.: (we assume that this PReq frame is intended for us and don't check DstNodeId)
2520                         if (AmiGetByteFromLe(&pFrame->m_le_bDstNodeId) != EplDllkInstance_g.m_DllConfigParam.m_uiNodeId) {      // this PReq is not intended for us
2521                                 goto Exit;
2522                         }
2523                         NmtEvent = kEplNmtEventDllCePreq;
2524
2525                         if (NmtState >= kEplNmtMsNotActive) {   // MN is active -> wrong msg type
2526                                 break;
2527                         }
2528 #if EDRV_EARLY_RX_INT == FALSE
2529                         if (NmtState >= kEplNmtCsPreOperational2) {     // respond to and process PReq frames only in PreOp2, ReadyToOp and Op
2530                                 // Does PRes exist?
2531                                 pTxBuffer =
2532                                     &EplDllkInstance_g.
2533                                     m_pTxBuffer[EPL_DLLK_TXFRAME_PRES];
2534                                 if (pTxBuffer->m_pbBuffer != NULL) {    // PRes does exist
2535 #if (EPL_DLL_PRES_READY_AFTER_SOA != FALSE) || (EPL_DLL_PRES_READY_AFTER_SOC != FALSE)
2536                                         EdrvTxMsgStart(pTxBuffer);
2537 #else
2538                                         pTxFrame =
2539                                             (tEplFrame *) pTxBuffer->m_pbBuffer;
2540                                         // update frame (NMT state, RD, RS, PR, MS, EN flags)
2541                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.
2542                                                        m_le_bNmtStatus,
2543                                                        (u8) NmtState);
2544                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.
2545                                                        m_le_bFlag2,
2546                                                        EplDllkInstance_g.
2547                                                        m_bFlag2);
2548                                         bFlag1 =
2549                                             AmiGetByteFromLe(&pFrame->m_Data.
2550                                                              m_Preq.
2551                                                              m_le_bFlag1);
2552                                         // save EA flag
2553                                         EplDllkInstance_g.m_bMnFlag1 =
2554                                             (EplDllkInstance_g.
2555                                              m_bMnFlag1 & ~EPL_FRAME_FLAG1_EA)
2556                                             | (bFlag1 & EPL_FRAME_FLAG1_EA);
2557                                         // preserve MS flag
2558                                         bFlag1 &= EPL_FRAME_FLAG1_MS;
2559                                         // add EN flag from Error signaling module
2560                                         bFlag1 |=
2561                                             EplDllkInstance_g.
2562                                             m_bFlag1 & EPL_FRAME_FLAG1_EN;
2563                                         if (NmtState != kEplNmtCsOperational) { // mark PDO as invalid in NMT state Op
2564                                                 // reset only RD flag
2565                                                 AmiSetByteToLe(&pTxFrame->
2566                                                                m_Data.m_Pres.
2567                                                                m_le_bFlag1,
2568                                                                bFlag1);
2569                                         } else {        // leave RD flag untouched
2570                                                 AmiSetByteToLe(&pTxFrame->
2571                                                                m_Data.m_Pres.
2572                                                                m_le_bFlag1,
2573                                                                (AmiGetByteFromLe
2574                                                                 (&pTxFrame->
2575                                                                  m_Data.m_Pres.
2576                                                                  m_le_bFlag1) &
2577                                                                 EPL_FRAME_FLAG1_RD)
2578                                                                | bFlag1);
2579                                         }
2580                                         // $$$ update EPL_DLL_PRES_READY_AFTER_* code
2581                                         // send PRes frame
2582                                         Ret = EdrvSendTxMsg(pTxBuffer);
2583                                         if (Ret != kEplSuccessful) {
2584                                                 goto Exit;
2585                                         }
2586 #endif
2587                                 }
2588 #endif
2589                                 // inform PDO module
2590 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOK)) != 0)
2591                                 if (NmtState >= kEplNmtCsReadyToOperate) {      // inform PDO module only in ReadyToOp and Op
2592                                         if (NmtState != kEplNmtCsOperational) {
2593                                                 // reset RD flag and all other flags, but that does not matter, because they were processed above
2594                                                 AmiSetByteToLe(&pFrame->m_Data.
2595                                                                m_Preq.
2596                                                                m_le_bFlag1, 0);
2597                                         }
2598                                         // compares real frame size and PDO size
2599                                         if ((unsigned
2600                                              int)(AmiGetWordFromLe(&pFrame->
2601                                                                    m_Data.
2602                                                                    m_Preq.
2603                                                                    m_le_wSize) +
2604                                                   24)
2605                                             > FrameInfo.m_uiFrameSize) {        // format error
2606                                                 tEplErrorHandlerkEvent DllEvent;
2607
2608                                                 DllEvent.m_ulDllErrorEvents =
2609                                                     EPL_DLL_ERR_INVALID_FORMAT;
2610                                                 DllEvent.m_uiNodeId =
2611                                                     AmiGetByteFromLe(&pFrame->
2612                                                                      m_le_bSrcNodeId);
2613                                                 DllEvent.m_NmtState = NmtState;
2614                                                 Event.m_EventSink =
2615                                                     kEplEventSinkErrk;
2616                                                 Event.m_EventType =
2617                                                     kEplEventTypeDllError;
2618                                                 Event.m_NetTime =
2619                                                     FrameInfo.m_NetTime;
2620                                                 Event.m_uiSize =
2621                                                     sizeof(DllEvent);
2622                                                 Event.m_pArg = &DllEvent;
2623                                                 Ret = EplEventkPost(&Event);
2624                                                 break;
2625                                         }
2626                                         // forward PReq frame as RPDO to PDO module
2627                                         Ret = EplPdokCbPdoReceived(&FrameInfo);
2628
2629                                 }
2630 #if (EPL_DLL_PRES_READY_AFTER_SOC != FALSE)
2631                                 if (pTxBuffer->m_pbBuffer != NULL) {    // PRes does exist
2632                                         // inform PDO module about PRes after PReq
2633                                         FrameInfo.m_pFrame =
2634                                             (tEplFrame *) pTxBuffer->m_pbBuffer;
2635                                         FrameInfo.m_uiFrameSize =
2636                                             pTxBuffer->m_uiMaxBufferLen;
2637                                         Ret =
2638                                             EplPdokCbPdoTransmitted(&FrameInfo);
2639                                 }
2640 #endif
2641 #endif
2642
2643 #if EDRV_EARLY_RX_INT == FALSE
2644                                 // $$$ inform emergency protocol handling (error signaling module) about flags
2645                         }
2646 #endif
2647
2648                         // reset cycle counter
2649                         EplDllkInstance_g.m_uiCycleCount = 0;
2650
2651                         break;
2652                 }
2653
2654         case kEplMsgTypePres:
2655                 {
2656 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
2657                         tEplDllkNodeInfo *pIntNodeInfo;
2658                         tEplHeartbeatEvent HeartbeatEvent;
2659 #endif
2660
2661                         // PRes frame
2662                         NmtEvent = kEplNmtEventDllCePres;
2663
2664                         uiNodeId = AmiGetByteFromLe(&pFrame->m_le_bSrcNodeId);
2665
2666                         if ((NmtState >= kEplNmtCsPreOperational2)
2667                             && (NmtState <= kEplNmtCsOperational)) {    // process PRes frames only in PreOp2, ReadyToOp and Op of CN
2668
2669 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
2670                                 pIntNodeInfo = EplDllkGetNodeInfo(uiNodeId);
2671                                 if (pIntNodeInfo == NULL) {     // no node info structure available
2672                                         Ret = kEplDllNoNodeInfo;
2673                                         goto Exit;
2674                                 }
2675                         } else if (EplDllkInstance_g.m_DllState == kEplDllMsWaitPres) { // or process PRes frames in MsWaitPres
2676
2677                                 pIntNodeInfo = EplDllkInstance_g.m_pCurNodeInfo;
2678                                 if ((pIntNodeInfo == NULL) || (pIntNodeInfo->m_uiNodeId != uiNodeId)) { // ignore PRes, because it is from wrong CN
2679                                         // $$$ maybe post event to NmtMn module
2680                                         goto Exit;
2681                                 }
2682                                 // forward Flag2 to asynchronous scheduler
2683                                 bFlag1 =
2684                                     AmiGetByteFromLe(&pFrame->m_Data.m_Asnd.
2685                                                      m_Payload.m_StatusResponse.
2686                                                      m_le_bFlag2);
2687                                 Ret =
2688                                     EplDllkCalAsyncSetPendingRequests(uiNodeId,
2689                                                                       ((tEplDllAsyncReqPriority) ((bFlag1 & EPL_FRAME_FLAG2_PR) >> EPL_FRAME_FLAG2_PR_SHIFT)), (bFlag1 & EPL_FRAME_FLAG2_RS));
2690
2691 #endif
2692                         } else {        // ignore PRes, because it was received in wrong NMT state
2693                                 // but execute EplDllkChangeState() and post event to NMT module
2694                                 break;
2695                         }
2696
2697 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
2698                         {       // check NMT state of CN
2699                                 HeartbeatEvent.m_wErrorCode = EPL_E_NO_ERROR;
2700                                 HeartbeatEvent.m_NmtState =
2701                                     (tEplNmtState) (AmiGetByteFromLe
2702                                                     (&pFrame->m_Data.m_Pres.
2703                                                      m_le_bNmtStatus) |
2704                                                     EPL_NMT_TYPE_CS);
2705                                 if (pIntNodeInfo->m_NmtState != HeartbeatEvent.m_NmtState) {    // NMT state of CN has changed -> post event to NmtMnu module
2706                                         if (pIntNodeInfo->m_fSoftDelete == FALSE) {     // normal isochronous CN
2707                                                 HeartbeatEvent.m_uiNodeId =
2708                                                     uiNodeId;
2709                                                 Event.m_EventSink =
2710                                                     kEplEventSinkNmtMnu;
2711                                                 Event.m_EventType =
2712                                                     kEplEventTypeHeartbeat;
2713                                                 Event.m_uiSize =
2714                                                     sizeof(HeartbeatEvent);
2715                                                 Event.m_pArg = &HeartbeatEvent;
2716                                         } else {        // CN shall be deleted softly
2717                                                 Event.m_EventSink =
2718                                                     kEplEventSinkDllkCal;
2719                                                 Event.m_EventType =
2720                                                     kEplEventTypeDllkSoftDelNode;
2721                                                 Event.m_uiSize =
2722                                                     sizeof(unsigned int);
2723                                                 Event.m_pArg =
2724                                                     &pIntNodeInfo->m_uiNodeId;
2725                                         }
2726                                         Event.m_NetTime = FrameInfo.m_NetTime;
2727                                         Ret = EplEventkPost(&Event);
2728
2729                                         // save current NMT state of CN in internal node structure
2730                                         pIntNodeInfo->m_NmtState =
2731                                             HeartbeatEvent.m_NmtState;
2732                                 }
2733                         }
2734 #endif
2735
2736                         // inform PDO module
2737 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOK)) != 0)
2738                         if ((NmtState != kEplNmtCsPreOperational2)
2739                             && (NmtState != kEplNmtMsPreOperational2)) {        // inform PDO module only in ReadyToOp and Op
2740                                 // compare real frame size and PDO size?
2741                                 if (((unsigned
2742                                       int)(AmiGetWordFromLe(&pFrame->m_Data.
2743                                                             m_Pres.m_le_wSize) +
2744                                            24)
2745                                      > FrameInfo.m_uiFrameSize)
2746 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
2747                                     ||
2748                                     (AmiGetWordFromLe
2749                                      (&pFrame->m_Data.m_Pres.m_le_wSize) >
2750                                      pIntNodeInfo->m_wPresPayloadLimit)
2751 #endif
2752                                     ) { // format error
2753                                         tEplErrorHandlerkEvent DllEvent;
2754
2755                                         DllEvent.m_ulDllErrorEvents =
2756                                             EPL_DLL_ERR_INVALID_FORMAT;
2757                                         DllEvent.m_uiNodeId = uiNodeId;
2758                                         DllEvent.m_NmtState = NmtState;
2759                                         Event.m_EventSink = kEplEventSinkErrk;
2760                                         Event.m_EventType =
2761                                             kEplEventTypeDllError;
2762                                         Event.m_NetTime = FrameInfo.m_NetTime;
2763                                         Event.m_uiSize = sizeof(DllEvent);
2764                                         Event.m_pArg = &DllEvent;
2765                                         Ret = EplEventkPost(&Event);
2766                                         break;
2767                                 }
2768                                 if ((NmtState != kEplNmtCsOperational)
2769                                     && (NmtState != kEplNmtMsOperational)) {
2770                                         // reset RD flag and all other flags, but that does not matter, because they were processed above
2771                                         AmiSetByteToLe(&pFrame->m_Data.m_Pres.
2772                                                        m_le_bFlag1, 0);
2773                                 }
2774                                 Ret = EplPdokCbPdoReceived(&FrameInfo);
2775                         }
2776 #endif
2777
2778                         break;
2779                 }
2780
2781         case kEplMsgTypeSoc:
2782                 {
2783                         // SoC frame
2784                         NmtEvent = kEplNmtEventDllCeSoc;
2785
2786                         if (NmtState >= kEplNmtMsNotActive) {   // MN is active -> wrong msg type
2787                                 break;
2788                         }
2789 #if EPL_DLL_PRES_READY_AFTER_SOC != FALSE
2790                         // post PRes to transmit FIFO of the ethernet controller, but don't start
2791                         // transmission over bus
2792                         pTxBuffer =
2793                             &EplDllkInstance_g.
2794                             m_pTxBuffer[EPL_DLLK_TXFRAME_PRES];
2795                         // Does PRes exist?
2796                         if (pTxBuffer->m_pbBuffer != NULL) {    // PRes does exist
2797                                 pTxFrame = (tEplFrame *) pTxBuffer->m_pbBuffer;
2798                                 // update frame (NMT state, RD, RS, PR, MS, EN flags)
2799                                 if (NmtState < kEplNmtCsPreOperational2) {      // NMT state is not PreOp2, ReadyToOp or Op
2800                                         // fake NMT state PreOp2, because PRes will be sent only in PreOp2 or greater
2801                                         NmtState = kEplNmtCsPreOperational2;
2802                                 }
2803                                 AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.
2804                                                m_le_bNmtStatus,
2805                                                (u8) NmtState);
2806                                 AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.
2807                                                m_le_bFlag2,
2808                                                EplDllkInstance_g.m_bFlag2);
2809                                 if (NmtState != kEplNmtCsOperational) { // mark PDO as invalid in NMT state Op
2810                                         // $$$ reset only RD flag; set other flags appropriately
2811                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.
2812                                                        m_le_bFlag1, 0);
2813                                 }
2814                                 // $$$ make function that updates Pres, StatusRes
2815                                 // mark PRes frame as ready for transmission
2816                                 Ret = EdrvTxMsgReady(pTxBuffer);
2817                         }
2818 #endif
2819
2820                         if (NmtState >= kEplNmtCsPreOperational2) {     // SoC frames only in PreOp2, ReadyToOp and Op
2821                                 // trigger synchronous task
2822                                 Event.m_EventSink = kEplEventSinkSync;
2823                                 Event.m_EventType = kEplEventTypeSync;
2824                                 Event.m_uiSize = 0;
2825                                 Ret = EplEventkPost(&Event);
2826
2827                                 // update cycle counter
2828                                 if (EplDllkInstance_g.m_DllConfigParam.m_uiMultiplCycleCnt > 0) {       // multiplexed cycle active
2829                                         EplDllkInstance_g.m_uiCycleCount =
2830                                             (EplDllkInstance_g.m_uiCycleCount +
2831                                              1) %
2832                                             EplDllkInstance_g.m_DllConfigParam.
2833                                             m_uiMultiplCycleCnt;
2834                                 }
2835                         }
2836                         // reprogram timer
2837 #if EPL_TIMER_USE_HIGHRES != FALSE
2838                         if (EplDllkInstance_g.m_ullFrameTimeout != 0) {
2839                                 Ret =
2840                                     EplTimerHighReskModifyTimerNs
2841                                     (&EplDllkInstance_g.m_TimerHdlCycle,
2842                                      EplDllkInstance_g.m_ullFrameTimeout,
2843                                      EplDllkCbCnTimer, 0L, FALSE);
2844                         }
2845 #endif
2846
2847                         break;
2848                 }
2849
2850         case kEplMsgTypeSoa:
2851                 {
2852                         // SoA frame
2853                         NmtEvent = kEplNmtEventDllCeSoa;
2854
2855                         if (NmtState >= kEplNmtMsNotActive) {   // MN is active -> wrong msg type
2856                                 break;
2857                         }
2858
2859                         pTxFrame = NULL;
2860
2861                         if ((NmtState & EPL_NMT_SUPERSTATE_MASK) != EPL_NMT_CS_EPLMODE) {       // do not respond, if NMT state is < PreOp1 (i.e. not EPL_MODE)
2862                                 break;
2863                         }
2864                         // check TargetNodeId
2865                         uiNodeId =
2866                             AmiGetByteFromLe(&pFrame->m_Data.m_Soa.
2867                                              m_le_bReqServiceTarget);
2868                         if (uiNodeId == EplDllkInstance_g.m_DllConfigParam.m_uiNodeId) {        // local node is the target of the current request
2869
2870                                 // check ServiceId
2871                                 ReqServiceId =
2872                                     (tEplDllReqServiceId)
2873                                     AmiGetByteFromLe(&pFrame->m_Data.m_Soa.
2874                                                      m_le_bReqServiceId);
2875                                 if (ReqServiceId == kEplDllReqServiceStatus) {  // StatusRequest
2876                                         if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_STATUSRES].m_pbBuffer != NULL) {     // StatusRes does exist
2877
2878                                                 pTxFrame =
2879                                                     (tEplFrame *)
2880                                                     EplDllkInstance_g.
2881                                                     m_pTxBuffer
2882                                                     [EPL_DLLK_TXFRAME_STATUSRES].
2883                                                     m_pbBuffer;
2884                                                 // update StatusRes frame (NMT state, EN, EC, RS, PR flags)
2885                                                 AmiSetByteToLe(&pTxFrame->
2886                                                                m_Data.m_Asnd.
2887                                                                m_Payload.
2888                                                                m_StatusResponse.
2889                                                                m_le_bNmtStatus,
2890                                                                (u8) NmtState);
2891                                                 AmiSetByteToLe(&pTxFrame->
2892                                                                m_Data.m_Asnd.
2893                                                                m_Payload.
2894                                                                m_StatusResponse.
2895                                                                m_le_bFlag1,
2896                                                                EplDllkInstance_g.
2897                                                                m_bFlag1);
2898                                                 AmiSetByteToLe(&pTxFrame->
2899                                                                m_Data.m_Asnd.
2900                                                                m_Payload.
2901                                                                m_StatusResponse.
2902                                                                m_le_bFlag2,
2903                                                                EplDllkInstance_g.
2904                                                                m_bFlag2);
2905                                                 // send StatusRes
2906                                                 Ret =
2907                                                     EdrvSendTxMsg
2908                                                     (&EplDllkInstance_g.
2909                                                      m_pTxBuffer
2910                                                      [EPL_DLLK_TXFRAME_STATUSRES]);
2911                                                 if (Ret != kEplSuccessful) {
2912                                                         goto Exit;
2913                                                 }
2914                                                 TGT_DBG_SIGNAL_TRACE_POINT(8);
2915
2916                                                 // update error signaling
2917                                                 bFlag1 =
2918                                                     AmiGetByteFromLe(&pFrame->
2919                                                                      m_Data.
2920                                                                      m_Soa.
2921                                                                      m_le_bFlag1);
2922                                                 if (((bFlag1 ^ EplDllkInstance_g.m_bMnFlag1) & EPL_FRAME_FLAG1_ER) != 0) {      // exception reset flag was changed by MN
2923                                                         // assume same state for EC in next cycle (clear all other bits)
2924                                                         if ((bFlag1 &
2925                                                              EPL_FRAME_FLAG1_ER)
2926                                                             != 0) {
2927                                                                 // set EC and reset rest
2928                                                                 EplDllkInstance_g.
2929                                                                     m_bFlag1 =
2930                                                                     EPL_FRAME_FLAG1_EC;
2931                                                         } else {
2932                                                                 // reset complete flag 1 (including EC and EN)
2933                                                                 EplDllkInstance_g.
2934                                                                     m_bFlag1 =
2935                                                                     0;
2936                                                         }
2937                                                 }
2938                                                 // save flag 1 from MN for Status request response cycle
2939                                                 EplDllkInstance_g.m_bMnFlag1 =
2940                                                     bFlag1;
2941                                         }
2942                                 } else if (ReqServiceId == kEplDllReqServiceIdent) {    // IdentRequest
2943                                         if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_IDENTRES].m_pbBuffer != NULL) {      // IdentRes does exist
2944                                                 pTxFrame =
2945                                                     (tEplFrame *)
2946                                                     EplDllkInstance_g.
2947                                                     m_pTxBuffer
2948                                                     [EPL_DLLK_TXFRAME_IDENTRES].
2949                                                     m_pbBuffer;
2950                                                 // update IdentRes frame (NMT state, RS, PR flags)
2951                                                 AmiSetByteToLe(&pTxFrame->
2952                                                                m_Data.m_Asnd.
2953                                                                m_Payload.
2954                                                                m_IdentResponse.
2955                                                                m_le_bNmtStatus,
2956                                                                (u8) NmtState);
2957                                                 AmiSetByteToLe(&pTxFrame->
2958                                                                m_Data.m_Asnd.
2959                                                                m_Payload.
2960                                                                m_IdentResponse.
2961                                                                m_le_bFlag2,
2962                                                                EplDllkInstance_g.
2963                                                                m_bFlag2);
2964                                                 // send IdentRes
2965                                                 Ret =
2966                                                     EdrvSendTxMsg
2967                                                     (&EplDllkInstance_g.
2968                                                      m_pTxBuffer
2969                                                      [EPL_DLLK_TXFRAME_IDENTRES]);
2970                                                 if (Ret != kEplSuccessful) {
2971                                                         goto Exit;
2972                                                 }
2973                                                 TGT_DBG_SIGNAL_TRACE_POINT(7);
2974                                         }
2975                                 } else if (ReqServiceId == kEplDllReqServiceNmtRequest) {       // NmtRequest
2976                                         if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NMTREQ].m_pbBuffer != NULL) {        // NmtRequest does exist
2977                                                 // check if frame is not empty and not being filled
2978                                                 if (EplDllkInstance_g.
2979                                                     m_pTxBuffer
2980                                                     [EPL_DLLK_TXFRAME_NMTREQ].
2981                                                     m_uiTxMsgLen >
2982                                                     EPL_DLLK_BUFLEN_FILLING) {
2983                                                         /*if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NMTREQ].m_uiTxMsgLen < EPL_DLLK_BUFLEN_MIN)
2984                                                            {   // pad frame
2985                                                            EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NMTREQ].m_uiTxMsgLen = EPL_DLLK_BUFLEN_MIN;
2986                                                            } */
2987                                                         // memorize transmission
2988                                                         pTxFrame =
2989                                                             (tEplFrame *) 1;
2990                                                         // send NmtRequest
2991                                                         Ret =
2992                                                             EdrvSendTxMsg
2993                                                             (&EplDllkInstance_g.
2994                                                              m_pTxBuffer
2995                                                              [EPL_DLLK_TXFRAME_NMTREQ]);
2996                                                         if (Ret !=
2997                                                             kEplSuccessful) {
2998                                                                 goto Exit;
2999                                                         }
3000
3001                                                 }
3002                                         }
3003
3004                                 } else if (ReqServiceId == kEplDllReqServiceUnspecified) {      // unspecified invite
3005                                         if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NONEPL].m_pbBuffer != NULL) {        // non-EPL frame does exist
3006                                                 // check if frame is not empty and not being filled
3007                                                 if (EplDllkInstance_g.
3008                                                     m_pTxBuffer
3009                                                     [EPL_DLLK_TXFRAME_NONEPL].
3010                                                     m_uiTxMsgLen >
3011                                                     EPL_DLLK_BUFLEN_FILLING) {
3012                                                         /*if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NMTREQ].m_uiTxMsgLen < EPL_DLLK_BUFLEN_MIN)
3013                                                            {   // pad frame
3014                                                            EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NMTREQ].m_uiTxMsgLen = EPL_DLLK_BUFLEN_MIN;
3015                                                            } */
3016                                                         // memorize transmission
3017                                                         pTxFrame =
3018                                                             (tEplFrame *) 1;
3019                                                         // send non-EPL frame
3020                                                         Ret =
3021                                                             EdrvSendTxMsg
3022                                                             (&EplDllkInstance_g.
3023                                                              m_pTxBuffer
3024                                                              [EPL_DLLK_TXFRAME_NONEPL]);
3025                                                         if (Ret !=
3026                                                             kEplSuccessful) {
3027                                                                 goto Exit;
3028                                                         }
3029
3030                                                 }
3031                                         }
3032
3033                                 } else if (ReqServiceId == kEplDllReqServiceNo) {       // no async service requested -> do nothing
3034                                 }
3035                         }
3036 #if EPL_DLL_PRES_READY_AFTER_SOA != FALSE
3037                         if (pTxFrame == NULL) { // signal process function readiness of PRes frame
3038                                 Event.m_EventSink = kEplEventSinkDllk;
3039                                 Event.m_EventType = kEplEventTypeDllkPresReady;
3040                                 Event.m_uiSize = 0;
3041                                 Event.m_pArg = NULL;
3042                                 Ret = EplEventkPost(&Event);
3043                         }
3044 #endif
3045
3046                         // inform PDO module
3047 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOK)) != 0)
3048 //            Ret = EplPdokCbSoa(&FrameInfo);
3049 #endif
3050
3051                         // $$$ put SrcNodeId, NMT state and NetTime as HeartbeatEvent into eventqueue
3052
3053                         // $$$ inform emergency protocol handling about flags
3054                         break;
3055                 }
3056
3057         case kEplMsgTypeAsnd:
3058                 {
3059                         // ASnd frame
3060                         NmtEvent = kEplNmtEventDllCeAsnd;
3061
3062                         // ASnd service registered?
3063                         uiAsndServiceId =
3064                             (unsigned int)AmiGetByteFromLe(&pFrame->m_Data.
3065                                                            m_Asnd.
3066                                                            m_le_bServiceId);
3067
3068 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
3069                         if ((EplDllkInstance_g.m_DllState >= kEplDllMsNonCyclic)
3070                             &&
3071                             ((((tEplDllAsndServiceId) uiAsndServiceId) ==
3072                               kEplDllAsndStatusResponse)
3073                              || (((tEplDllAsndServiceId) uiAsndServiceId) == kEplDllAsndIdentResponse))) {      // StatusRes or IdentRes received
3074                                 uiNodeId =
3075                                     AmiGetByteFromLe(&pFrame->m_le_bSrcNodeId);
3076                                 if ((EplDllkInstance_g.m_LastReqServiceId ==
3077                                      ((tEplDllReqServiceId) uiAsndServiceId))
3078                                     && (uiNodeId == EplDllkInstance_g.m_uiLastTargetNodeId)) {  // mark request as responded
3079                                         EplDllkInstance_g.m_LastReqServiceId =
3080                                             kEplDllReqServiceNo;
3081                                 }
3082                                 if (((tEplDllAsndServiceId) uiAsndServiceId) == kEplDllAsndIdentResponse) {     // memorize MAC address of CN for PReq
3083                                         tEplDllkNodeInfo *pIntNodeInfo;
3084
3085                                         pIntNodeInfo =
3086                                             EplDllkGetNodeInfo(uiNodeId);
3087                                         if (pIntNodeInfo == NULL) {     // no node info structure available
3088                                                 Ret = kEplDllNoNodeInfo;
3089                                         } else {
3090                                                 EPL_MEMCPY(pIntNodeInfo->
3091                                                            m_be_abMacAddr,
3092                                                            pFrame->
3093                                                            m_be_abSrcMac, 6);
3094                                         }
3095                                 }
3096                                 // forward Flag2 to asynchronous scheduler
3097                                 bFlag1 =
3098                                     AmiGetByteFromLe(&pFrame->m_Data.m_Asnd.
3099                                                      m_Payload.m_StatusResponse.
3100                                                      m_le_bFlag2);
3101                                 Ret =
3102                                     EplDllkCalAsyncSetPendingRequests(uiNodeId,
3103                                                                       ((tEplDllAsyncReqPriority) ((bFlag1 & EPL_FRAME_FLAG2_PR) >> EPL_FRAME_FLAG2_PR_SHIFT)), (bFlag1 & EPL_FRAME_FLAG2_RS));
3104                         }
3105 #endif
3106
3107                         if (uiAsndServiceId < EPL_DLL_MAX_ASND_SERVICE_ID) {    // ASnd service ID is valid
3108                                 if (EplDllkInstance_g.m_aAsndFilter[uiAsndServiceId] == kEplDllAsndFilterAny) { // ASnd service ID is registered
3109                                         // forward frame via async receive FIFO to userspace
3110                                         Ret =
3111                                             EplDllkCalAsyncFrameReceived
3112                                             (&FrameInfo);
3113                                 } else if (EplDllkInstance_g.m_aAsndFilter[uiAsndServiceId] == kEplDllAsndFilterLocal) {        // ASnd service ID is registered, but only local node ID or broadcasts
3114                                         // shall be forwarded
3115                                         uiNodeId =
3116                                             AmiGetByteFromLe(&pFrame->
3117                                                              m_le_bDstNodeId);
3118                                         if ((uiNodeId ==
3119                                              EplDllkInstance_g.m_DllConfigParam.
3120                                              m_uiNodeId)
3121                                             || (uiNodeId == EPL_C_ADR_BROADCAST)) {     // ASnd frame is intended for us
3122                                                 // forward frame via async receive FIFO to userspace
3123                                                 Ret =
3124                                                     EplDllkCalAsyncFrameReceived
3125                                                     (&FrameInfo);
3126                                         }
3127                                 }
3128                         }
3129                         break;
3130                 }
3131
3132         default:
3133                 {
3134                         break;
3135                 }
3136         }
3137
3138         if (NmtEvent != kEplNmtEventNoEvent) {  // event for DLL and NMT state machine generated
3139                 Ret = EplDllkChangeState(NmtEvent, NmtState);
3140                 if (Ret != kEplSuccessful) {
3141                         goto Exit;
3142                 }
3143
3144                 if ((NmtEvent != kEplNmtEventDllCeAsnd)
3145                     && ((NmtState <= kEplNmtCsPreOperational1) || (NmtEvent != kEplNmtEventDllCePres))) {       // NMT state machine is not interested in ASnd frames and PRes frames when not CsNotActive or CsPreOp1
3146                         // inform NMT module
3147                         Event.m_EventSink = kEplEventSinkNmtk;
3148                         Event.m_EventType = kEplEventTypeNmtEvent;
3149                         Event.m_uiSize = sizeof(NmtEvent);
3150                         Event.m_pArg = &NmtEvent;
3151                         Ret = EplEventkPost(&Event);
3152                 }
3153         }
3154
3155       Exit:
3156         if (Ret != kEplSuccessful) {
3157                 u32 dwArg;
3158
3159                 BENCHMARK_MOD_02_TOGGLE(9);
3160
3161                 dwArg = EplDllkInstance_g.m_DllState | (NmtEvent << 8);
3162
3163                 // Error event for API layer
3164                 Ret = EplEventkPostError(kEplEventSourceDllk,
3165                                          Ret, sizeof(dwArg), &dwArg);
3166         }
3167         BENCHMARK_MOD_02_RESET(3);
3168         return;
3169 }
3170
3171 //---------------------------------------------------------------------------
3172 //
3173 // Function:    EplDllkCbFrameTransmitted()
3174 //
3175 // Description: called from EdrvInterruptHandler().
3176 //              It signals
3177 //
3178 // Parameters:  pRxBuffer_p             = receive buffer structure
3179 //
3180 // Returns:     (none)
3181 //
3182 //
3183 // State:
3184 //
3185 //---------------------------------------------------------------------------
3186
3187 static void EplDllkCbFrameTransmitted(tEdrvTxBuffer * pTxBuffer_p)
3188 {
3189         tEplKernel Ret = kEplSuccessful;
3190         tEplEvent Event;
3191         tEplDllAsyncReqPriority Priority;
3192         tEplNmtState NmtState;
3193
3194 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOK)) != 0) \
3195     && (EPL_DLL_PRES_READY_AFTER_SOC == FALSE)
3196         tEplFrameInfo FrameInfo;
3197 #endif
3198
3199         NmtState = EplNmtkGetNmtState();
3200
3201         if (NmtState <= kEplNmtGsResetConfiguration) {
3202                 goto Exit;
3203         }
3204
3205         if ((pTxBuffer_p - EplDllkInstance_g.m_pTxBuffer) == EPL_DLLK_TXFRAME_NMTREQ) { // frame from NMT request FIFO sent
3206                 // mark Tx-buffer as empty
3207                 pTxBuffer_p->m_uiTxMsgLen = EPL_DLLK_BUFLEN_EMPTY;
3208
3209                 // post event to DLL
3210                 Priority = kEplDllAsyncReqPrioNmt;
3211                 Event.m_EventSink = kEplEventSinkDllk;
3212                 Event.m_EventType = kEplEventTypeDllkFillTx;
3213                 EPL_MEMSET(&Event.m_NetTime, 0x00, sizeof(Event.m_NetTime));
3214                 Event.m_pArg = &Priority;
3215                 Event.m_uiSize = sizeof(Priority);
3216                 Ret = EplEventkPost(&Event);
3217         } else if ((pTxBuffer_p - EplDllkInstance_g.m_pTxBuffer) == EPL_DLLK_TXFRAME_NONEPL) {  // frame from generic priority FIFO sent
3218                 // mark Tx-buffer as empty
3219                 pTxBuffer_p->m_uiTxMsgLen = EPL_DLLK_BUFLEN_EMPTY;
3220
3221                 // post event to DLL
3222                 Priority = kEplDllAsyncReqPrioGeneric;
3223                 Event.m_EventSink = kEplEventSinkDllk;
3224                 Event.m_EventType = kEplEventTypeDllkFillTx;
3225                 EPL_MEMSET(&Event.m_NetTime, 0x00, sizeof(Event.m_NetTime));
3226                 Event.m_pArg = &Priority;
3227                 Event.m_uiSize = sizeof(Priority);
3228                 Ret = EplEventkPost(&Event);
3229         }
3230 #if ((((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOK)) != 0) \
3231     && (EPL_DLL_PRES_READY_AFTER_SOC == FALSE)) \
3232     || (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
3233         else if ((pTxBuffer_p->m_EplMsgType == kEplMsgTypePreq)
3234                  || (pTxBuffer_p->m_EplMsgType == kEplMsgTypePres)) {   // PRes resp. PReq frame sent
3235
3236 #if ((((EPL_MODULE_INTEGRATION) & (EPL_MODULE_PDOK)) != 0) \
3237             && (EPL_DLL_PRES_READY_AFTER_SOC == FALSE))
3238                 {
3239                         // inform PDO module
3240                         FrameInfo.m_pFrame =
3241                             (tEplFrame *) pTxBuffer_p->m_pbBuffer;
3242                         FrameInfo.m_uiFrameSize = pTxBuffer_p->m_uiMaxBufferLen;
3243                         Ret = EplPdokCbPdoTransmitted(&FrameInfo);
3244                 }
3245 #endif
3246
3247 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
3248                 {
3249                         // if own Pres on MN, trigger SoA
3250                         if ((NmtState >= kEplNmtMsPreOperational2)
3251                             && (pTxBuffer_p ==
3252                                 &EplDllkInstance_g.
3253                                 m_pTxBuffer[EPL_DLLK_TXFRAME_PRES])) {
3254                                 Ret =
3255                                     EplDllkChangeState(kEplNmtEventDllMeSoaTrig,
3256                                                        NmtState);
3257                         }
3258                 }
3259 #endif
3260
3261 #if EPL_DLL_PRES_READY_AFTER_SOA != FALSE
3262                 goto Exit;
3263 #endif
3264         }
3265 #endif
3266 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
3267         else if (pTxBuffer_p->m_EplMsgType == kEplMsgTypeSoa) { // SoA frame sent
3268                 tEplNmtEvent NmtEvent = kEplNmtEventDllMeSoaSent;
3269
3270                 // check if we are invited
3271                 if (EplDllkInstance_g.m_uiLastTargetNodeId ==
3272                     EplDllkInstance_g.m_DllConfigParam.m_uiNodeId) {
3273                         tEplFrame *pTxFrame;
3274
3275                         if (EplDllkInstance_g.m_LastReqServiceId == kEplDllReqServiceStatus) {  // StatusRequest
3276                                 if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_STATUSRES].m_pbBuffer != NULL) {     // StatusRes does exist
3277
3278                                         pTxFrame =
3279                                             (tEplFrame *) EplDllkInstance_g.
3280                                             m_pTxBuffer
3281                                             [EPL_DLLK_TXFRAME_STATUSRES].
3282                                             m_pbBuffer;
3283                                         // update StatusRes frame (NMT state, EN, EC, RS, PR flags)
3284                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Asnd.
3285                                                        m_Payload.
3286                                                        m_StatusResponse.
3287                                                        m_le_bNmtStatus,
3288                                                        (u8) NmtState);
3289                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Asnd.
3290                                                        m_Payload.
3291                                                        m_StatusResponse.
3292                                                        m_le_bFlag1,
3293                                                        EplDllkInstance_g.
3294                                                        m_bFlag1);
3295                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Asnd.
3296                                                        m_Payload.
3297                                                        m_StatusResponse.
3298                                                        m_le_bFlag2,
3299                                                        EplDllkInstance_g.
3300                                                        m_bFlag2);
3301                                         // send StatusRes
3302                                         Ret =
3303                                             EdrvSendTxMsg(&EplDllkInstance_g.
3304                                                           m_pTxBuffer
3305                                                           [EPL_DLLK_TXFRAME_STATUSRES]);
3306                                         if (Ret != kEplSuccessful) {
3307                                                 goto Exit;
3308                                         }
3309                                         TGT_DBG_SIGNAL_TRACE_POINT(8);
3310
3311                                 }
3312                         } else if (EplDllkInstance_g.m_LastReqServiceId == kEplDllReqServiceIdent) {    // IdentRequest
3313                                 if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_IDENTRES].m_pbBuffer != NULL) {      // IdentRes does exist
3314                                         pTxFrame =
3315                                             (tEplFrame *) EplDllkInstance_g.
3316                                             m_pTxBuffer
3317                                             [EPL_DLLK_TXFRAME_IDENTRES].
3318                                             m_pbBuffer;
3319                                         // update IdentRes frame (NMT state, RS, PR flags)
3320                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Asnd.
3321                                                        m_Payload.
3322                                                        m_IdentResponse.
3323                                                        m_le_bNmtStatus,
3324                                                        (u8) NmtState);
3325                                         AmiSetByteToLe(&pTxFrame->m_Data.m_Asnd.
3326                                                        m_Payload.
3327                                                        m_IdentResponse.
3328                                                        m_le_bFlag2,
3329                                                        EplDllkInstance_g.
3330                                                        m_bFlag2);
3331                                         // send IdentRes
3332                                         Ret =
3333                                             EdrvSendTxMsg(&EplDllkInstance_g.
3334                                                           m_pTxBuffer
3335                                                           [EPL_DLLK_TXFRAME_IDENTRES]);
3336                                         if (Ret != kEplSuccessful) {
3337                                                 goto Exit;
3338                                         }
3339                                         TGT_DBG_SIGNAL_TRACE_POINT(7);
3340                                 }
3341                         } else if (EplDllkInstance_g.m_LastReqServiceId == kEplDllReqServiceNmtRequest) {       // NmtRequest
3342                                 if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NMTREQ].m_pbBuffer != NULL) {        // NmtRequest does exist
3343                                         // check if frame is not empty and not being filled
3344                                         if (EplDllkInstance_g.
3345                                             m_pTxBuffer
3346                                             [EPL_DLLK_TXFRAME_NMTREQ].
3347                                             m_uiTxMsgLen >
3348                                             EPL_DLLK_BUFLEN_FILLING) {
3349                                                 // check if this frame is a NMT command,
3350                                                 // then forward this frame back to NmtMnu module,
3351                                                 // because it needs the time, when this frame is
3352                                                 // actually sent, to start the timer for monitoring
3353                                                 // the NMT state change.
3354
3355                                                 pTxFrame =
3356                                                     (tEplFrame *)
3357                                                     EplDllkInstance_g.
3358                                                     m_pTxBuffer
3359                                                     [EPL_DLLK_TXFRAME_NMTREQ].
3360                                                     m_pbBuffer;
3361                                                 if ((AmiGetByteFromLe
3362                                                      (&pTxFrame->
3363                                                       m_le_bMessageType)
3364                                                      == (u8) kEplMsgTypeAsnd)
3365                                                     &&
3366                                                     (AmiGetByteFromLe
3367                                                      (&pTxFrame->m_Data.m_Asnd.
3368                                                       m_le_bServiceId)
3369                                                      == (u8) kEplDllAsndNmtCommand)) {  // post event directly to NmtMnu module
3370                                                         Event.m_EventSink =
3371                                                             kEplEventSinkNmtMnu;
3372                                                         Event.m_EventType =
3373                                                             kEplEventTypeNmtMnuNmtCmdSent;
3374                                                         Event.m_uiSize =
3375                                                             EplDllkInstance_g.
3376                                                             m_pTxBuffer
3377                                                             [EPL_DLLK_TXFRAME_NMTREQ].
3378                                                             m_uiTxMsgLen;
3379                                                         Event.m_pArg = pTxFrame;
3380                                                         Ret =
3381                                                             EplEventkPost
3382                                                             (&Event);
3383
3384                                                 }
3385                                                 // send NmtRequest
3386                                                 Ret =
3387                                                     EdrvSendTxMsg
3388                                                     (&EplDllkInstance_g.
3389                                                      m_pTxBuffer
3390                                                      [EPL_DLLK_TXFRAME_NMTREQ]);
3391                                                 if (Ret != kEplSuccessful) {
3392                                                         goto Exit;
3393                                                 }
3394
3395                                         }
3396                                 }
3397
3398                         } else if (EplDllkInstance_g.m_LastReqServiceId == kEplDllReqServiceUnspecified) {      // unspecified invite
3399                                 if (EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_NONEPL].m_pbBuffer != NULL) {        // non-EPL frame does exist
3400                                         // check if frame is not empty and not being filled
3401                                         if (EplDllkInstance_g.
3402                                             m_pTxBuffer
3403                                             [EPL_DLLK_TXFRAME_NONEPL].
3404                                             m_uiTxMsgLen >
3405                                             EPL_DLLK_BUFLEN_FILLING) {
3406                                                 // send non-EPL frame
3407                                                 Ret =
3408                                                     EdrvSendTxMsg
3409                                                     (&EplDllkInstance_g.
3410                                                      m_pTxBuffer
3411                                                      [EPL_DLLK_TXFRAME_NONEPL]);
3412                                                 if (Ret != kEplSuccessful) {
3413                                                         goto Exit;
3414                                                 }
3415
3416                                         }
3417                                 }
3418                         }
3419                         // ASnd frame was sent, remove the request
3420                         EplDllkInstance_g.m_LastReqServiceId =
3421                             kEplDllReqServiceNo;
3422                 }
3423                 // forward event to ErrorHandler and PDO module
3424                 Event.m_EventSink = kEplEventSinkNmtk;
3425                 Event.m_EventType = kEplEventTypeNmtEvent;
3426                 Event.m_uiSize = sizeof(NmtEvent);
3427                 Event.m_pArg = &NmtEvent;
3428                 Ret = EplEventkPost(&Event);
3429                 if (Ret != kEplSuccessful) {
3430                         goto Exit;
3431                 }
3432         }
3433 #endif
3434
3435 #if EPL_DLL_PRES_READY_AFTER_SOA != FALSE
3436         else {                  // d.k.: Why that else? on CN it is entered on IdentRes and StatusRes
3437                 goto Exit;
3438         }
3439
3440         // signal process function readiness of PRes frame
3441         Event.m_EventSink = kEplEventSinkDllk;
3442         Event.m_EventType = kEplEventTypeDllkPresReady;
3443         Event.m_uiSize = 0;
3444         Event.m_pArg = NULL;
3445         Ret = EplEventkPost(&Event);
3446
3447 #endif
3448
3449       Exit:
3450         if (Ret != kEplSuccessful) {
3451                 u32 dwArg;
3452
3453                 BENCHMARK_MOD_02_TOGGLE(9);
3454
3455                 dwArg =
3456                     EplDllkInstance_g.m_DllState | (pTxBuffer_p->
3457                                                     m_EplMsgType << 16);
3458
3459                 // Error event for API layer
3460                 Ret = EplEventkPostError(kEplEventSourceDllk,
3461                                          Ret, sizeof(dwArg), &dwArg);
3462         }
3463
3464         return;
3465 }
3466
3467 //---------------------------------------------------------------------------
3468 //
3469 // Function:    EplDllkCheckFrame()
3470 //
3471 // Description: check frame and set missing information
3472 //
3473 // Parameters:  pFrame_p                = ethernet frame
3474 //              uiFrameSize_p           = size of frame
3475 //
3476 // Returns:     tEplKernel              = error code
3477 //
3478 //
3479 // State:
3480 //
3481 //---------------------------------------------------------------------------
3482
3483 static tEplKernel EplDllkCheckFrame(tEplFrame * pFrame_p,
3484                                     unsigned int uiFrameSize_p)
3485 {
3486         tEplMsgType MsgType;
3487         u16 wEtherType;
3488
3489         // check frame
3490         if (pFrame_p != NULL) {
3491                 // check SrcMAC
3492                 if (AmiGetQword48FromBe(pFrame_p->m_be_abSrcMac) == 0) {
3493                         // source MAC address
3494                         EPL_MEMCPY(&pFrame_p->m_be_abSrcMac[0],
3495                                    &EplDllkInstance_g.m_be_abSrcMac[0], 6);
3496                 }
3497                 // check ethertype
3498                 wEtherType = AmiGetWordFromBe(&pFrame_p->m_be_wEtherType);
3499                 if (wEtherType == 0) {
3500                         // assume EPL frame
3501                         wEtherType = EPL_C_DLL_ETHERTYPE_EPL;
3502                         AmiSetWordToBe(&pFrame_p->m_be_wEtherType, wEtherType);
3503                 }
3504
3505                 if (wEtherType == EPL_C_DLL_ETHERTYPE_EPL) {
3506                         // source node ID
3507                         AmiSetByteToLe(&pFrame_p->m_le_bSrcNodeId,
3508                                        (u8) EplDllkInstance_g.
3509                                        m_DllConfigParam.m_uiNodeId);
3510
3511                         // check message type
3512                         MsgType =
3513                             AmiGetByteFromLe(&pFrame_p->m_le_bMessageType);
3514                         if (MsgType == 0) {
3515                                 MsgType = kEplMsgTypeAsnd;
3516                                 AmiSetByteToLe(&pFrame_p->m_le_bMessageType,
3517                                                (u8) MsgType);
3518                         }
3519
3520                         if (MsgType == kEplMsgTypeAsnd) {
3521                                 // destination MAC address
3522                                 AmiSetQword48ToBe(&pFrame_p->m_be_abDstMac[0],
3523                                                   EPL_C_DLL_MULTICAST_ASND);
3524                         }
3525
3526                 }
3527         }
3528
3529         return kEplSuccessful;
3530 }
3531
3532 //---------------------------------------------------------------------------
3533 //
3534 // Function:    EplDllkCbCnTimer()
3535 //
3536 // Description: called by timer module. It monitors the EPL cycle when it is a CN.
3537 //
3538 // Parameters:  pEventArg_p             = timer event argument
3539 //
3540 // Returns:     tEplKernel              = error code
3541 //
3542 //
3543 // State:
3544 //
3545 //---------------------------------------------------------------------------
3546
3547 #if EPL_TIMER_USE_HIGHRES != FALSE
3548 static tEplKernel EplDllkCbCnTimer(tEplTimerEventArg *pEventArg_p)
3549 {
3550         tEplKernel Ret = kEplSuccessful;
3551         tEplNmtState NmtState;
3552
3553 #if EPL_TIMER_USE_HIGHRES != FALSE
3554         if (pEventArg_p->m_TimerHdl != EplDllkInstance_g.m_TimerHdlCycle) {     // zombie callback
3555                 // just exit
3556                 goto Exit;
3557         }
3558 #endif
3559
3560         NmtState = EplNmtkGetNmtState();
3561
3562         if (NmtState <= kEplNmtGsResetConfiguration) {
3563                 goto Exit;
3564         }
3565
3566         Ret = EplDllkChangeState(kEplNmtEventDllCeFrameTimeout, NmtState);
3567         if (Ret != kEplSuccessful) {
3568                 goto Exit;
3569         }
3570         // 2008/10/15 d.k. reprogramming of timer not necessary,
3571         // because it will be programmed, when SoC is received.
3572 /*
3573     // reprogram timer
3574 #if EPL_TIMER_USE_HIGHRES != FALSE
3575     if ((NmtState > kEplNmtCsPreOperational1)
3576         && (EplDllkInstance_g.m_ullFrameTimeout != 0))
3577     {
3578         Ret = EplTimerHighReskModifyTimerNs(&EplDllkInstance_g.m_TimerHdlCycle, EplDllkInstance_g.m_ullFrameTimeout, EplDllkCbCnTimer, 0L, FALSE);
3579     }
3580 #endif
3581 */
3582
3583       Exit:
3584         if (Ret != kEplSuccessful) {
3585                 u32 dwArg;
3586
3587                 BENCHMARK_MOD_02_TOGGLE(9);
3588
3589                 dwArg =
3590                     EplDllkInstance_g.
3591                     m_DllState | (kEplNmtEventDllCeFrameTimeout << 8);
3592
3593                 // Error event for API layer
3594                 Ret = EplEventkPostError(kEplEventSourceDllk,
3595                                          Ret, sizeof(dwArg), &dwArg);
3596         }
3597
3598         return Ret;
3599 }
3600 #endif
3601
3602 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
3603
3604 //---------------------------------------------------------------------------
3605 //
3606 // Function:    EplDllkCbMnTimerCycle()
3607 //
3608 // Description: called by timer module. It triggers the SoC when it is a MN.
3609 //
3610 // Parameters:  pEventArg_p             = timer event argument
3611 //
3612 // Returns:     tEplKernel              = error code
3613 //
3614 //
3615 // State:
3616 //
3617 //---------------------------------------------------------------------------
3618
3619 static tEplKernel EplDllkCbMnTimerCycle(tEplTimerEventArg *pEventArg_p)
3620 {
3621         tEplKernel Ret = kEplSuccessful;
3622         tEplNmtState NmtState;
3623
3624 #if EPL_TIMER_USE_HIGHRES != FALSE
3625         if (pEventArg_p->m_TimerHdl != EplDllkInstance_g.m_TimerHdlCycle) {     // zombie callback
3626                 // just exit
3627                 goto Exit;
3628         }
3629 #endif
3630
3631         NmtState = EplNmtkGetNmtState();
3632
3633         if (NmtState <= kEplNmtGsResetConfiguration) {
3634                 goto Exit;
3635         }
3636
3637         Ret = EplDllkChangeState(kEplNmtEventDllMeSocTrig, NmtState);
3638
3639       Exit:
3640         if (Ret != kEplSuccessful) {
3641                 u32 dwArg;
3642
3643                 BENCHMARK_MOD_02_TOGGLE(9);
3644
3645                 dwArg =
3646                     EplDllkInstance_g.
3647                     m_DllState | (kEplNmtEventDllMeSocTrig << 8);
3648
3649                 // Error event for API layer
3650                 Ret = EplEventkPostError(kEplEventSourceDllk,
3651                                          Ret, sizeof(dwArg), &dwArg);
3652         }
3653
3654         return Ret;
3655 }
3656
3657 //---------------------------------------------------------------------------
3658 //
3659 // Function:    EplDllkCbMnTimerResponse()
3660 //
3661 // Description: called by timer module. It monitors the PRes timeout.
3662 //
3663 // Parameters:  pEventArg_p             = timer event argument
3664 //
3665 // Returns:     tEplKernel              = error code
3666 //
3667 //
3668 // State:
3669 //
3670 //---------------------------------------------------------------------------
3671
3672 static tEplKernel EplDllkCbMnTimerResponse(tEplTimerEventArg *pEventArg_p)
3673 {
3674         tEplKernel Ret = kEplSuccessful;
3675         tEplNmtState NmtState;
3676
3677 #if EPL_TIMER_USE_HIGHRES != FALSE
3678         if (pEventArg_p->m_TimerHdl != EplDllkInstance_g.m_TimerHdlResponse) {  // zombie callback
3679                 // just exit
3680                 goto Exit;
3681         }
3682 #endif
3683
3684         NmtState = EplNmtkGetNmtState();
3685
3686         if (NmtState <= kEplNmtGsResetConfiguration) {
3687                 goto Exit;
3688         }
3689
3690         Ret = EplDllkChangeState(kEplNmtEventDllMePresTimeout, NmtState);
3691
3692       Exit:
3693         if (Ret != kEplSuccessful) {
3694                 u32 dwArg;
3695
3696                 BENCHMARK_MOD_02_TOGGLE(9);
3697
3698                 dwArg =
3699                     EplDllkInstance_g.
3700                     m_DllState | (kEplNmtEventDllMePresTimeout << 8);
3701
3702                 // Error event for API layer
3703                 Ret = EplEventkPostError(kEplEventSourceDllk,
3704                                          Ret, sizeof(dwArg), &dwArg);
3705         }
3706
3707         return Ret;
3708 }
3709
3710 //---------------------------------------------------------------------------
3711 //
3712 // Function:    EplDllkGetNodeInfo()
3713 //
3714 // Description: returns node info structure of the specified node.
3715 //
3716 // Parameters:  uiNodeId_p              = node ID
3717 //
3718 // Returns:     tEplDllkNodeInfo*       = pointer to internal node info structure
3719 //
3720 //
3721 // State:
3722 //
3723 //---------------------------------------------------------------------------
3724
3725 static tEplDllkNodeInfo *EplDllkGetNodeInfo(unsigned int uiNodeId_p)
3726 {
3727         // $$$ d.k.: use hash algorithm to retrieve the appropriate node info structure
3728         //           if size of array is less than 254.
3729         uiNodeId_p--;           // node ID starts at 1 but array at 0
3730         if (uiNodeId_p >= tabentries(EplDllkInstance_g.m_aNodeInfo)) {
3731                 return NULL;
3732         } else {
3733                 return &EplDllkInstance_g.m_aNodeInfo[uiNodeId_p];
3734         }
3735 }
3736
3737 //---------------------------------------------------------------------------
3738 //
3739 // Function:    EplDllkMnSendSoa()
3740 //
3741 // Description: it updates and transmits the SoA.
3742 //
3743 // Parameters:  NmtState_p              = current NMT state
3744 //              pDllStateProposed_p     = proposed DLL state
3745 //              fEnableInvitation_p     = enable invitation for asynchronous phase
3746 //                                        it will be disabled for EPL_C_DLL_PREOP1_START_CYCLES SoAs
3747 //
3748 // Returns:     tEplKernel              = error code
3749 //
3750 //
3751 // State:
3752 //
3753 //---------------------------------------------------------------------------
3754
3755 static tEplKernel EplDllkMnSendSoa(tEplNmtState NmtState_p,
3756                                    tEplDllState * pDllStateProposed_p,
3757                                    BOOL fEnableInvitation_p)
3758 {
3759         tEplKernel Ret = kEplSuccessful;
3760         tEdrvTxBuffer *pTxBuffer = NULL;
3761         tEplFrame *pTxFrame;
3762         tEplDllkNodeInfo *pNodeInfo;
3763
3764         *pDllStateProposed_p = kEplDllMsNonCyclic;
3765
3766         pTxBuffer = &EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_SOA];
3767         if (pTxBuffer->m_pbBuffer != NULL) {    // SoA does exist
3768                 pTxFrame = (tEplFrame *) pTxBuffer->m_pbBuffer;
3769
3770                 if (fEnableInvitation_p != FALSE) {     // fetch target of asynchronous phase
3771                         if (EplDllkInstance_g.m_bFlag2 == 0) {  // own queues are empty
3772                                 EplDllkInstance_g.m_LastReqServiceId =
3773                                     kEplDllReqServiceNo;
3774                         } else if (((tEplDllAsyncReqPriority) (EplDllkInstance_g.m_bFlag2 >> EPL_FRAME_FLAG2_PR_SHIFT)) == kEplDllAsyncReqPrioNmt) {    // frames in own NMT request queue available
3775                                 EplDllkInstance_g.m_LastReqServiceId =
3776                                     kEplDllReqServiceNmtRequest;
3777                         } else {
3778                                 EplDllkInstance_g.m_LastReqServiceId =
3779                                     kEplDllReqServiceUnspecified;
3780                         }
3781                         Ret =
3782                             EplDllkCalAsyncGetSoaRequest(&EplDllkInstance_g.
3783                                                          m_LastReqServiceId,
3784                                                          &EplDllkInstance_g.
3785                                                          m_uiLastTargetNodeId);
3786                         if (Ret != kEplSuccessful) {
3787                                 goto Exit;
3788                         }
3789                         if (EplDllkInstance_g.m_LastReqServiceId != kEplDllReqServiceNo) {      // asynchronous phase will be assigned to one node
3790                                 if (EplDllkInstance_g.m_uiLastTargetNodeId == EPL_C_ADR_INVALID) {      // exchange invalid node ID with local node ID
3791                                         EplDllkInstance_g.m_uiLastTargetNodeId =
3792                                             EplDllkInstance_g.m_DllConfigParam.
3793                                             m_uiNodeId;
3794                                         // d.k. DLL state WaitAsndTrig is not helpful;
3795                                         //      so just step over to WaitSocTrig,
3796                                         //      because own ASnd is sent automatically in CbFrameTransmitted() after SoA.
3797                                         //*pDllStateProposed_p = kEplDllMsWaitAsndTrig;
3798                                         *pDllStateProposed_p =
3799                                             kEplDllMsWaitSocTrig;
3800                                 } else {        // assignment to CN
3801                                         *pDllStateProposed_p =
3802                                             kEplDllMsWaitAsnd;
3803                                 }
3804
3805                                 pNodeInfo =
3806                                     EplDllkGetNodeInfo(EplDllkInstance_g.
3807                                                        m_uiLastTargetNodeId);
3808                                 if (pNodeInfo == NULL) {        // no node info structure available
3809                                         Ret = kEplDllNoNodeInfo;
3810                                         goto Exit;
3811                                 }
3812                                 // update frame (EA, ER flags)
3813                                 AmiSetByteToLe(&pTxFrame->m_Data.m_Soa.
3814                                                m_le_bFlag1,
3815                                                pNodeInfo->
3816                                                m_bSoaFlag1 & (EPL_FRAME_FLAG1_EA
3817                                                               |
3818                                                               EPL_FRAME_FLAG1_ER));
3819                         } else {        // no assignment of asynchronous phase
3820                                 *pDllStateProposed_p = kEplDllMsWaitSocTrig;
3821                                 EplDllkInstance_g.m_uiLastTargetNodeId =
3822                                     EPL_C_ADR_INVALID;
3823                         }
3824
3825                         // update frame (target)
3826                         AmiSetByteToLe(&pTxFrame->m_Data.m_Soa.
3827                                        m_le_bReqServiceId,
3828                                        (u8) EplDllkInstance_g.
3829                                        m_LastReqServiceId);
3830                         AmiSetByteToLe(&pTxFrame->m_Data.m_Soa.
3831                                        m_le_bReqServiceTarget,
3832                                        (u8) EplDllkInstance_g.
3833                                        m_uiLastTargetNodeId);
3834
3835                 } else {        // invite nobody
3836                         // update frame (target)
3837                         AmiSetByteToLe(&pTxFrame->m_Data.m_Soa.
3838                                        m_le_bReqServiceId, (u8) 0);
3839                         AmiSetByteToLe(&pTxFrame->m_Data.m_Soa.
3840                                        m_le_bReqServiceTarget, (u8) 0);
3841                 }
3842
3843                 // update frame (NMT state)
3844                 AmiSetByteToLe(&pTxFrame->m_Data.m_Soa.m_le_bNmtStatus,
3845                                (u8) NmtState_p);
3846
3847                 // send SoA frame
3848                 Ret = EdrvSendTxMsg(pTxBuffer);
3849         }
3850
3851       Exit:
3852         return Ret;
3853 }
3854
3855 //---------------------------------------------------------------------------
3856 //
3857 // Function:    EplDllkMnSendSoc()
3858 //
3859 // Description: it updates and transmits the SoA.
3860 //
3861 // Parameters:  (none)
3862 //
3863 // Returns:     tEplKernel              = error code
3864 //
3865 //
3866 // State:
3867 //
3868 //---------------------------------------------------------------------------
3869
3870 static tEplKernel EplDllkMnSendSoc(void)
3871 {
3872         tEplKernel Ret = kEplSuccessful;
3873         tEdrvTxBuffer *pTxBuffer = NULL;
3874         tEplFrame *pTxFrame;
3875         tEplEvent Event;
3876
3877         pTxBuffer = &EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_SOC];
3878         if (pTxBuffer->m_pbBuffer != NULL) {    // SoC does exist
3879                 pTxFrame = (tEplFrame *) pTxBuffer->m_pbBuffer;
3880
3881                 // $$$ update NetTime
3882
3883                 // send SoC frame
3884                 Ret = EdrvSendTxMsg(pTxBuffer);
3885                 if (Ret != kEplSuccessful) {
3886                         goto Exit;
3887                 }
3888                 // trigger synchronous task
3889                 Event.m_EventSink = kEplEventSinkSync;
3890                 Event.m_EventType = kEplEventTypeSync;
3891                 Event.m_uiSize = 0;
3892                 Ret = EplEventkPost(&Event);
3893         }
3894
3895       Exit:
3896         return Ret;
3897 }
3898
3899 //---------------------------------------------------------------------------
3900 //
3901 // Function:    EplDllkMnSendPreq()
3902 //
3903 // Description: it updates and transmits the PReq for the next isochronous CN
3904 //              or own PRes if enabled.
3905 //
3906 // Parameters:  NmtState_p              = current NMT state
3907 //              pDllStateProposed_p     = proposed DLL state
3908 //
3909 // Returns:     tEplKernel              = error code
3910 //
3911 //
3912 // State:
3913 //
3914 //---------------------------------------------------------------------------
3915
3916 static tEplKernel EplDllkMnSendPreq(tEplNmtState NmtState_p,
3917                                     tEplDllState * pDllStateProposed_p)
3918 {
3919         tEplKernel Ret = kEplSuccessful;
3920         tEdrvTxBuffer *pTxBuffer = NULL;
3921         tEplFrame *pTxFrame;
3922         u8 bFlag1 = 0;
3923
3924         if (EplDllkInstance_g.m_pCurNodeInfo == NULL) { // start with first isochronous CN
3925                 EplDllkInstance_g.m_pCurNodeInfo =
3926                     EplDllkInstance_g.m_pFirstNodeInfo;
3927         } else {                // iterate to next isochronous CN
3928                 EplDllkInstance_g.m_pCurNodeInfo =
3929                     EplDllkInstance_g.m_pCurNodeInfo->m_pNextNodeInfo;
3930         }
3931
3932         if (EplDllkInstance_g.m_pCurNodeInfo == NULL) { // last isochronous CN reached
3933                 Ret = EplDllkMnSendSoa(NmtState_p, pDllStateProposed_p, TRUE);
3934                 goto Exit;
3935         } else {
3936                 pTxBuffer = EplDllkInstance_g.m_pCurNodeInfo->m_pPreqTxBuffer;
3937                 bFlag1 =
3938                     EplDllkInstance_g.m_pCurNodeInfo->
3939                     m_bSoaFlag1 & EPL_FRAME_FLAG1_EA;
3940                 *pDllStateProposed_p = kEplDllMsWaitPres;
3941
3942                 // start PRes Timer
3943                 // $$$ d.k.: maybe move this call to CbFrameTransmitted(), because the time should run from there
3944 #if EPL_TIMER_USE_HIGHRES != FALSE
3945                 Ret =
3946                     EplTimerHighReskModifyTimerNs(&EplDllkInstance_g.
3947                                                   m_TimerHdlResponse,
3948                                                   EplDllkInstance_g.
3949                                                   m_pCurNodeInfo->
3950                                                   m_dwPresTimeout,
3951                                                   EplDllkCbMnTimerResponse, 0L,
3952                                                   FALSE);
3953 #endif
3954         }
3955
3956         if (pTxBuffer == NULL) {        // PReq does not exist
3957                 Ret = kEplDllTxBufNotReady;
3958                 goto Exit;
3959         }
3960
3961         pTxFrame = (tEplFrame *) pTxBuffer->m_pbBuffer;
3962
3963         if (pTxFrame != NULL) { // PReq does exist
3964                 if (NmtState_p == kEplNmtMsOperational) {       // leave RD flag untouched
3965                         bFlag1 |=
3966                             AmiGetByteFromLe(&pTxFrame->m_Data.m_Preq.
3967                                              m_le_bFlag1) & EPL_FRAME_FLAG1_RD;
3968                 }
3969
3970                 if (pTxBuffer == &EplDllkInstance_g.m_pTxBuffer[EPL_DLLK_TXFRAME_PRES]) {       // PRes of MN will be sent
3971                         // update NMT state
3972                         AmiSetByteToLe(&pTxFrame->m_Data.m_Pres.m_le_bNmtStatus,
3973                                        (u8) NmtState_p);
3974                         *pDllStateProposed_p = kEplDllMsWaitSoaTrig;
3975                 }
3976                 // $$$ d.k. set EPL_FRAME_FLAG1_MS if necessary
3977                 // update frame (Flag1)
3978                 AmiSetByteToLe(&pTxFrame->m_Data.m_Preq.m_le_bFlag1, bFlag1);
3979
3980                 // calculate frame size from payload size
3981                 pTxBuffer->m_uiTxMsgLen =
3982                     AmiGetWordFromLe(&pTxFrame->m_Data.m_Preq.m_le_wSize) + 24;
3983
3984                 // send PReq frame
3985                 Ret = EdrvSendTxMsg(pTxBuffer);
3986         } else {
3987                 Ret = kEplDllTxFrameInvalid;
3988         }
3989
3990       Exit:
3991         return Ret;
3992 }
3993
3994 //---------------------------------------------------------------------------
3995 //
3996 // Function:    EplDllkAsyncFrameNotReceived()
3997 //
3998 // Description: passes empty ASnd frame to receive FIFO.
3999 //              It will be called only for frames with registered AsndServiceIds
4000 //              (only kEplDllAsndFilterAny).
4001 //
4002 // Parameters:  none
4003 //
4004 // Returns:     tEplKernel              = error code
4005 //
4006 //
4007 // State:
4008 //
4009 //---------------------------------------------------------------------------
4010
4011 static tEplKernel EplDllkAsyncFrameNotReceived(tEplDllReqServiceId
4012                                                ReqServiceId_p,
4013                                                unsigned int uiNodeId_p)
4014 {
4015         tEplKernel Ret = kEplSuccessful;
4016         u8 abBuffer[18];
4017         tEplFrame *pFrame = (tEplFrame *) abBuffer;
4018         tEplFrameInfo FrameInfo;
4019
4020         // check if previous SoA invitation was not answered
4021         switch (ReqServiceId_p) {
4022         case kEplDllReqServiceIdent:
4023         case kEplDllReqServiceStatus:
4024                 // ASnd service registered?
4025                 if (EplDllkInstance_g.m_aAsndFilter[ReqServiceId_p] == kEplDllAsndFilterAny) {  // ASnd service ID is registered
4026                         AmiSetByteToLe(&pFrame->m_le_bSrcNodeId,
4027                                        (u8) uiNodeId_p);
4028                         // EPL MsgType ASnd
4029                         AmiSetByteToLe(&pFrame->m_le_bMessageType,
4030                                        (u8) kEplMsgTypeAsnd);
4031                         // ASnd Service ID
4032                         AmiSetByteToLe(&pFrame->m_Data.m_Asnd.m_le_bServiceId,
4033                                        (u8) ReqServiceId_p);
4034                         // create frame info structure
4035                         FrameInfo.m_pFrame = pFrame;
4036                         FrameInfo.m_uiFrameSize = 18;   // empty non existing ASnd frame
4037                         // forward frame via async receive FIFO to userspace
4038                         Ret = EplDllkCalAsyncFrameReceived(&FrameInfo);
4039                 }
4040                 break;
4041         default:
4042                 // no invitation issued or it was successfully answered or it is uninteresting
4043                 break;
4044         }
4045
4046         return Ret;
4047 }
4048
4049 #endif //(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
4050
4051 #endif // #if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_DLLK)) != 0)
4052 // EOF