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

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   2
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   4       www.systec-electronic.com
   5
   6   Project:      openPOWERLINK
   7
   8   Description:  source file for kernel DLL Communication Abstraction Layer module
   9
  10   License:
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  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: EplDllkCal.c,v $
  53
  54                 $Author: D.Krueger $
  55
  56                 $Revision: 1.7 $  $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   2006/06/15 d.k.:   start of the implementation, version 1.00
  68
  69 ****************************************************************************/
  70
  71 #include "kernel/EplDllkCal.h"
  72 #include "kernel/EplDllk.h"
  73 #include "kernel/EplEventk.h"
  74
  75 #include "EplDllCal.h"
  76 #ifndef EPL_NO_FIFO
  77 #include "SharedBuff.h"
  78 #endif
  79
  80 #if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_DLLK)) != 0)
  81 /***************************************************************************/
  82 /*                                                                         */
  83 /*                                                                         */
  84 /*          G L O B A L   D E F I N I T I O N S                            */
  85 /*                                                                         */
  86 /*                                                                         */
  87 /***************************************************************************/
  88
  89 //---------------------------------------------------------------------------
  90 // const defines
  91 //---------------------------------------------------------------------------
  92
  93 #ifndef min
  94 #define min(a,b)            (((a) < (b)) ? (a) : (b))
  95 #endif
  96
  97 //---------------------------------------------------------------------------
  98 // local types
  99 //---------------------------------------------------------------------------
 100
 101 //---------------------------------------------------------------------------
 102 // modul globale vars
 103 //---------------------------------------------------------------------------
 104
 105 //---------------------------------------------------------------------------
 106 // local function prototypes
 107 //---------------------------------------------------------------------------
 108
 109 /***************************************************************************/
 110 /*                                                                         */
 111 /*                                                                         */
 112 /*          C L A S S  EplDllkCal                                          */
 113 /*                                                                         */
 114 /*                                                                         */
 115 /***************************************************************************/
 116 //
 117 // Description:
 118 //
 119 //
 120 /***************************************************************************/
 121
 122 //=========================================================================//
 123 //                                                                         //
 124 //          P R I V A T E   D E F I N I T I O N S                          //
 125 //                                                                         //
 126 //=========================================================================//
 127
 128 //---------------------------------------------------------------------------
 129 // const defines
 130 //---------------------------------------------------------------------------
 131
 132 #define EPL_DLLKCAL_MAX_QUEUES  5       // CnGenReq, CnNmtReq, {MnGenReq, MnNmtReq}, MnIdentReq, MnStatusReq
 133
 134 //---------------------------------------------------------------------------
 135 // local types
 136 //---------------------------------------------------------------------------
 137
 138 typedef struct {
 139 #ifndef EPL_NO_FIFO
 140 //    tShbInstance    m_ShbInstanceRx;      // FIFO for Rx ASnd frames
 141         tShbInstance m_ShbInstanceTxNmt;        // FIFO for Tx frames with NMT request priority
 142         tShbInstance m_ShbInstanceTxGen;        // FIFO for Tx frames with generic priority
 143 #else
 144         unsigned int m_uiFrameSizeNmt;
 145         u8 m_abFrameNmt[1500];
 146         unsigned int m_uiFrameSizeGen;
 147         u8 m_abFrameGen[1500];
 148 #endif
 149
 150         tEplDllkCalStatistics m_Statistics;
 151
 152 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 153         // IdentRequest queue with CN node IDs
 154         unsigned int m_auiQueueIdentReq[EPL_D_NMT_MaxCNNumber_U8 + 1];  // 1 entry is reserved to distinguish between full and empty
 155         unsigned int m_uiWriteIdentReq;
 156         unsigned int m_uiReadIdentReq;
 157
 158         // StatusRequest queue with CN node IDs
 159         unsigned int m_auiQueueStatusReq[EPL_D_NMT_MaxCNNumber_U8 + 1]; // 1 entry is reserved to distinguish between full and empty
 160         unsigned int m_uiWriteStatusReq;
 161         unsigned int m_uiReadStatusReq;
 162
 163         unsigned int m_auiQueueCnRequests[254 * 2];
 164         // first 254 entries represent the generic requests of the corresponding node
 165         // second 254 entries represent the NMT requests of the corresponding node
 166         unsigned int m_uiNextQueueCnRequest;
 167         unsigned int m_uiNextRequestQueue;
 168 #endif
 169
 170 } tEplDllkCalInstance;
 171
 172 //---------------------------------------------------------------------------
 173 // local vars
 174 //---------------------------------------------------------------------------
 175
 176 // if no dynamic memory allocation shall be used
 177 // define structures statically
 178 static tEplDllkCalInstance EplDllkCalInstance_g;
 179
 180 //---------------------------------------------------------------------------
 181 // local function prototypes
 182 //---------------------------------------------------------------------------
 183
 184 //=========================================================================//
 185 //                                                                         //
 186 //          P U B L I C   F U N C T I O N S                                //
 187 //                                                                         //
 188 //=========================================================================//
 189
 190 //---------------------------------------------------------------------------
 191 //
 192 // Function:    EplDllkCalAddInstance()
 193 //
 194 // Description: add and initialize new instance of DLL CAL module
 195 //
 196 // Parameters:  none
 197 //
 198 // Returns:     tEplKernel              = error code
 199 //
 200 //
 201 // State:
 202 //
 203 //---------------------------------------------------------------------------
 204
 205 tEplKernel EplDllkCalAddInstance(void)
 206 {
 207         tEplKernel Ret = kEplSuccessful;
 208 #ifndef EPL_NO_FIFO
 209         tShbError ShbError;
 210         unsigned int fShbNewCreated;
 211
 212 /*    ShbError = ShbCirAllocBuffer (EPL_DLLCAL_BUFFER_SIZE_RX, EPL_DLLCAL_BUFFER_ID_RX,
 213         &EplDllkCalInstance_g.m_ShbInstanceRx, &fShbNewCreated);
 214     // returns kShbOk, kShbOpenMismatch, kShbOutOfMem or kShbInvalidArg
 215
 216     if (ShbError != kShbOk)
 217     {
 218         Ret = kEplNoResource;
 219     }
 220 */
 221         ShbError =
 222             ShbCirAllocBuffer(EPL_DLLCAL_BUFFER_SIZE_TX_NMT,
 223                               EPL_DLLCAL_BUFFER_ID_TX_NMT,
 224                               &EplDllkCalInstance_g.m_ShbInstanceTxNmt,
 225                               &fShbNewCreated);
 226         // returns kShbOk, kShbOpenMismatch, kShbOutOfMem or kShbInvalidArg
 227
 228         if (ShbError != kShbOk) {
 229                 Ret = kEplNoResource;
 230         }
 231
 232 /*    ShbError = ShbCirSetSignalHandlerNewData (EplDllkCalInstance_g.m_ShbInstanceTxNmt, EplDllkCalTxNmtSignalHandler, kShbPriorityNormal);
 233     // returns kShbOk, kShbAlreadySignaling or kShbInvalidArg
 234
 235     if (ShbError != kShbOk)
 236     {
 237         Ret = kEplNoResource;
 238     }
 239 */
 240         ShbError =
 241             ShbCirAllocBuffer(EPL_DLLCAL_BUFFER_SIZE_TX_GEN,
 242                               EPL_DLLCAL_BUFFER_ID_TX_GEN,
 243                               &EplDllkCalInstance_g.m_ShbInstanceTxGen,
 244                               &fShbNewCreated);
 245         // returns kShbOk, kShbOpenMismatch, kShbOutOfMem or kShbInvalidArg
 246
 247         if (ShbError != kShbOk) {
 248                 Ret = kEplNoResource;
 249         }
 250
 251 /*    ShbError = ShbCirSetSignalHandlerNewData (EplDllkCalInstance_g.m_ShbInstanceTxGen, EplDllkCalTxGenSignalHandler, kShbPriorityNormal);
 252     // returns kShbOk, kShbAlreadySignaling or kShbInvalidArg
 253
 254     if (ShbError != kShbOk)
 255     {
 256         Ret = kEplNoResource;
 257     }
 258 */
 259 #else
 260         EplDllkCalInstance_g.m_uiFrameSizeNmt = 0;
 261         EplDllkCalInstance_g.m_uiFrameSizeGen = 0;
 262 #endif
 263
 264         return Ret;
 265 }
 266
 267 //---------------------------------------------------------------------------
 268 //
 269 // Function:    EplDllkCalDelInstance()
 270 //
 271 // Description: deletes instance of DLL CAL module
 272 //
 273 // Parameters:  none
 274 //
 275 // Returns:     tEplKernel              = error code
 276 //
 277 //
 278 // State:
 279 //
 280 //---------------------------------------------------------------------------
 281
 282 tEplKernel EplDllkCalDelInstance(void)
 283 {
 284         tEplKernel Ret = kEplSuccessful;
 285 #ifndef EPL_NO_FIFO
 286         tShbError ShbError;
 287
 288 /*    ShbError = ShbCirReleaseBuffer (EplDllkCalInstance_g.m_ShbInstanceRx);
 289     if (ShbError != kShbOk)
 290     {
 291         Ret = kEplNoResource;
 292     }
 293     EplDllkCalInstance_g.m_ShbInstanceRx = NULL;
 294 */
 295         ShbError = ShbCirReleaseBuffer(EplDllkCalInstance_g.m_ShbInstanceTxNmt);
 296         if (ShbError != kShbOk) {
 297                 Ret = kEplNoResource;
 298         }
 299         EplDllkCalInstance_g.m_ShbInstanceTxNmt = NULL;
 300
 301         ShbError = ShbCirReleaseBuffer(EplDllkCalInstance_g.m_ShbInstanceTxGen);
 302         if (ShbError != kShbOk) {
 303                 Ret = kEplNoResource;
 304         }
 305         EplDllkCalInstance_g.m_ShbInstanceTxGen = NULL;
 306
 307 #else
 308         EplDllkCalInstance_g.m_uiFrameSizeNmt = 0;
 309         EplDllkCalInstance_g.m_uiFrameSizeGen = 0;
 310 #endif
 311
 312         return Ret;
 313 }
 314
 315 //---------------------------------------------------------------------------
 316 //
 317 // Function:    EplDllkCalProcess
 318 //
 319 // Description: process the passed configuration
 320 //
 321 // Parameters:  pEvent_p                = event containing configuration options
 322 //
 323 // Returns:     tEplKernel              = error code
 324 //
 325 //
 326 // State:
 327 //
 328 //---------------------------------------------------------------------------
 329
 330 tEplKernel EplDllkCalProcess(tEplEvent * pEvent_p)
 331 {
 332         tEplKernel Ret = kEplSuccessful;
 333
 334         switch (pEvent_p->m_EventType) {
 335         case kEplEventTypeDllkServFilter:
 336                 {
 337                         tEplDllCalAsndServiceIdFilter *pServFilter;
 338
 339                         pServFilter =
 340                             (tEplDllCalAsndServiceIdFilter *) pEvent_p->m_pArg;
 341                         Ret =
 342                             EplDllkSetAsndServiceIdFilter(pServFilter->
 343                                                           m_ServiceId,
 344                                                           pServFilter->
 345                                                           m_Filter);
 346                         break;
 347                 }
 348
 349 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 350         case kEplEventTypeDllkIssueReq:
 351                 {
 352                         tEplDllCalIssueRequest *pIssueReq;
 353
 354                         pIssueReq = (tEplDllCalIssueRequest *) pEvent_p->m_pArg;
 355                         Ret =
 356                             EplDllkCalIssueRequest(pIssueReq->m_Service,
 357                                                    pIssueReq->m_uiNodeId,
 358                                                    pIssueReq->m_bSoaFlag1);
 359                         break;
 360                 }
 361
 362         case kEplEventTypeDllkAddNode:
 363                 {
 364                         tEplDllNodeInfo *pNodeInfo;
 365
 366                         pNodeInfo = (tEplDllNodeInfo *) pEvent_p->m_pArg;
 367                         Ret = EplDllkAddNode(pNodeInfo);
 368                         break;
 369                 }
 370
 371         case kEplEventTypeDllkDelNode:
 372                 {
 373                         unsigned int *puiNodeId;
 374
 375                         puiNodeId = (unsigned int *)pEvent_p->m_pArg;
 376                         Ret = EplDllkDeleteNode(*puiNodeId);
 377                         break;
 378                 }
 379
 380         case kEplEventTypeDllkSoftDelNode:
 381                 {
 382                         unsigned int *puiNodeId;
 383
 384                         puiNodeId = (unsigned int *)pEvent_p->m_pArg;
 385                         Ret = EplDllkSoftDeleteNode(*puiNodeId);
 386                         break;
 387                 }
 388 #endif
 389
 390         case kEplEventTypeDllkIdentity:
 391                 {
 392                         tEplDllIdentParam *pIdentParam;
 393
 394                         pIdentParam = (tEplDllIdentParam *) pEvent_p->m_pArg;
 395                         if (pIdentParam->m_uiSizeOfStruct > pEvent_p->m_uiSize) {
 396                                 pIdentParam->m_uiSizeOfStruct =
 397                                     pEvent_p->m_uiSize;
 398                         }
 399                         Ret = EplDllkSetIdentity(pIdentParam);
 400                         break;
 401                 }
 402
 403         case kEplEventTypeDllkConfig:
 404                 {
 405                         tEplDllConfigParam *pConfigParam;
 406
 407                         pConfigParam = (tEplDllConfigParam *) pEvent_p->m_pArg;
 408                         if (pConfigParam->m_uiSizeOfStruct > pEvent_p->m_uiSize) {
 409                                 pConfigParam->m_uiSizeOfStruct =
 410                                     pEvent_p->m_uiSize;
 411                         }
 412                         Ret = EplDllkConfig(pConfigParam);
 413                         break;
 414                 }
 415
 416         default:
 417                 break;
 418         }
 419
 420 //Exit:
 421         return Ret;
 422 }
 423
 424 //---------------------------------------------------------------------------
 425 //
 426 // Function:    EplDllkCalAsyncGetTxCount()
 427 //
 428 // Description: returns count of Tx frames of FIFO with highest priority
 429 //
 430 // Parameters:  none
 431 //
 432 // Returns:     tEplKernel              = error code
 433 //
 434 //
 435 // State:
 436 //
 437 //---------------------------------------------------------------------------
 438
 439 tEplKernel EplDllkCalAsyncGetTxCount(tEplDllAsyncReqPriority * pPriority_p,
 440                                      unsigned int *puiCount_p)
 441 {
 442         tEplKernel Ret = kEplSuccessful;
 443 #ifndef EPL_NO_FIFO
 444         tShbError ShbError;
 445         unsigned long ulFrameCount;
 446
 447         // get frame count of Tx FIFO with NMT request priority
 448         ShbError =
 449             ShbCirGetReadBlockCount(EplDllkCalInstance_g.m_ShbInstanceTxNmt,
 450                                     &ulFrameCount);
 451         // returns kShbOk, kShbInvalidArg
 452
 453         // error handling
 454         if (ShbError != kShbOk) {
 455                 Ret = kEplNoResource;
 456                 goto Exit;
 457         }
 458
 459         if (ulFrameCount >
 460             EplDllkCalInstance_g.m_Statistics.m_ulMaxTxFrameCountNmt) {
 461                 EplDllkCalInstance_g.m_Statistics.m_ulMaxTxFrameCountNmt =
 462                     ulFrameCount;
 463         }
 464
 465         if (ulFrameCount != 0) {        // NMT requests are in queue
 466                 *pPriority_p = kEplDllAsyncReqPrioNmt;
 467                 *puiCount_p = (unsigned int)ulFrameCount;
 468                 goto Exit;
 469         }
 470         // get frame count of Tx FIFO with generic priority
 471         ShbError =
 472             ShbCirGetReadBlockCount(EplDllkCalInstance_g.m_ShbInstanceTxGen,
 473                                     &ulFrameCount);
 474         // returns kShbOk, kShbInvalidArg
 475
 476         // error handling
 477         if (ShbError != kShbOk) {
 478                 Ret = kEplNoResource;
 479                 goto Exit;
 480         }
 481
 482         if (ulFrameCount >
 483             EplDllkCalInstance_g.m_Statistics.m_ulMaxTxFrameCountGen) {
 484                 EplDllkCalInstance_g.m_Statistics.m_ulMaxTxFrameCountGen =
 485                     ulFrameCount;
 486         }
 487
 488         *pPriority_p = kEplDllAsyncReqPrioGeneric;
 489         *puiCount_p = (unsigned int)ulFrameCount;
 490
 491       Exit:
 492 #else
 493         if (EplDllkCalInstance_g.m_uiFrameSizeNmt > 0) {
 494                 *pPriority_p = kEplDllAsyncReqPrioNmt;
 495                 *puiCount_p = 1;
 496         } else if (EplDllkCalInstance_g.m_uiFrameSizeGen > 0) {
 497                 *pPriority_p = kEplDllAsyncReqPrioGeneric;
 498                 *puiCount_p = 1;
 499         } else {
 500                 *pPriority_p = kEplDllAsyncReqPrioGeneric;
 501                 *puiCount_p = 0;
 502         }
 503 #endif
 504
 505         return Ret;
 506 }
 507
 508 //---------------------------------------------------------------------------
 509 //
 510 // Function:    EplDllkCalAsyncGetTxFrame()
 511 //
 512 // Description: returns Tx frames from FIFO with specified priority
 513 //
 514 // Parameters:  pFrame_p                = IN: pointer to buffer
 515 //              puiFrameSize_p          = IN: max size of buffer
 516 //                                        OUT: actual size of frame
 517 //              Priority_p              = IN: priority
 518 //
 519 // Returns:     tEplKernel              = error code
 520 //
 521 //
 522 // State:
 523 //
 524 //---------------------------------------------------------------------------
 525
 526 tEplKernel EplDllkCalAsyncGetTxFrame(void *pFrame_p,
 527                                      unsigned int *puiFrameSize_p,
 528                                      tEplDllAsyncReqPriority Priority_p)
 529 {
 530         tEplKernel Ret = kEplSuccessful;
 531 #ifndef EPL_NO_FIFO
 532         tShbError ShbError;
 533         unsigned long ulFrameSize;
 534
 535         switch (Priority_p) {
 536         case kEplDllAsyncReqPrioNmt:    // NMT request priority
 537                 ShbError =
 538                     ShbCirReadDataBlock(EplDllkCalInstance_g.m_ShbInstanceTxNmt,
 539                                         (u8 *) pFrame_p, *puiFrameSize_p,
 540                                         &ulFrameSize);
 541                 // returns kShbOk, kShbDataTruncated, kShbInvalidArg, kShbNoReadableData
 542                 break;
 543
 544         default:                // generic priority
 545                 ShbError =
 546                     ShbCirReadDataBlock(EplDllkCalInstance_g.m_ShbInstanceTxGen,
 547                                         (u8 *) pFrame_p, *puiFrameSize_p,
 548                                         &ulFrameSize);
 549                 // returns kShbOk, kShbDataTruncated, kShbInvalidArg, kShbNoReadableData
 550                 break;
 551
 552         }
 553
 554         // error handling
 555         if (ShbError != kShbOk) {
 556                 if (ShbError == kShbNoReadableData) {
 557                         Ret = kEplDllAsyncTxBufferEmpty;
 558                 } else {        // other error
 559                         Ret = kEplNoResource;
 560                 }
 561                 goto Exit;
 562         }
 563
 564         *puiFrameSize_p = (unsigned int)ulFrameSize;
 565
 566       Exit:
 567 #else
 568         switch (Priority_p) {
 569         case kEplDllAsyncReqPrioNmt:    // NMT request priority
 570                 *puiFrameSize_p =
 571                     min(*puiFrameSize_p, EplDllkCalInstance_g.m_uiFrameSizeNmt);
 572                 EPL_MEMCPY(pFrame_p, EplDllkCalInstance_g.m_abFrameNmt,
 573                            *puiFrameSize_p);
 574                 EplDllkCalInstance_g.m_uiFrameSizeNmt = 0;
 575                 break;
 576
 577         default:                // generic priority
 578                 *puiFrameSize_p =
 579                     min(*puiFrameSize_p, EplDllkCalInstance_g.m_uiFrameSizeGen);
 580                 EPL_MEMCPY(pFrame_p, EplDllkCalInstance_g.m_abFrameGen,
 581                            *puiFrameSize_p);
 582                 EplDllkCalInstance_g.m_uiFrameSizeGen = 0;
 583                 break;
 584         }
 585
 586 #endif
 587
 588         return Ret;
 589 }
 590
 591 //---------------------------------------------------------------------------
 592 //
 593 // Function:    EplDllkCalAsyncFrameReceived()
 594 //
 595 // Description: passes ASnd frame to receive FIFO.
 596 //              It will be called only for frames with registered AsndServiceIds.
 597 //
 598 // Parameters:  none
 599 //
 600 // Returns:     tEplKernel              = error code
 601 //
 602 //
 603 // State:
 604 //
 605 //---------------------------------------------------------------------------
 606
 607 tEplKernel EplDllkCalAsyncFrameReceived(tEplFrameInfo * pFrameInfo_p)
 608 {
 609         tEplKernel Ret = kEplSuccessful;
 610         tEplEvent Event;
 611
 612         Event.m_EventSink = kEplEventSinkDlluCal;
 613         Event.m_EventType = kEplEventTypeAsndRx;
 614         Event.m_pArg = pFrameInfo_p->m_pFrame;
 615         Event.m_uiSize = pFrameInfo_p->m_uiFrameSize;
 616         // pass NetTime of frame to userspace
 617         Event.m_NetTime = pFrameInfo_p->m_NetTime;
 618
 619         Ret = EplEventkPost(&Event);
 620         if (Ret != kEplSuccessful) {
 621                 EplDllkCalInstance_g.m_Statistics.m_ulCurRxFrameCount++;
 622         } else {
 623                 EplDllkCalInstance_g.m_Statistics.m_ulMaxRxFrameCount++;
 624         }
 625
 626         return Ret;
 627 }
 628
 629 //---------------------------------------------------------------------------
 630 //
 631 // Function:    EplDllkCalAsyncSend()
 632 //
 633 // Description: puts the given frame into the transmit FIFO with the specified
 634 //              priority.
 635 //
 636 // Parameters:  pFrameInfo_p            = frame info structure
 637 //              Priority_p              = priority
 638 //
 639 // Returns:     tEplKernel              = error code
 640 //
 641 //
 642 // State:
 643 //
 644 //---------------------------------------------------------------------------
 645
 646 tEplKernel EplDllkCalAsyncSend(tEplFrameInfo * pFrameInfo_p,
 647                                tEplDllAsyncReqPriority Priority_p)
 648 {
 649         tEplKernel Ret = kEplSuccessful;
 650         tEplEvent Event;
 651 #ifndef EPL_NO_FIFO
 652         tShbError ShbError;
 653
 654         switch (Priority_p) {
 655         case kEplDllAsyncReqPrioNmt:    // NMT request priority
 656                 ShbError =
 657                     ShbCirWriteDataBlock(EplDllkCalInstance_g.
 658                                          m_ShbInstanceTxNmt,
 659                                          pFrameInfo_p->m_pFrame,
 660                                          pFrameInfo_p->m_uiFrameSize);
 661                 // returns kShbOk, kShbExceedDataSizeLimit, kShbBufferFull, kShbInvalidArg
 662                 break;
 663
 664         default:                // generic priority
 665                 ShbError =
 666                     ShbCirWriteDataBlock(EplDllkCalInstance_g.
 667                                          m_ShbInstanceTxGen,
 668                                          pFrameInfo_p->m_pFrame,
 669                                          pFrameInfo_p->m_uiFrameSize);
 670                 // returns kShbOk, kShbExceedDataSizeLimit, kShbBufferFull, kShbInvalidArg
 671                 break;
 672
 673         }
 674
 675         // error handling
 676         switch (ShbError) {
 677         case kShbOk:
 678                 break;
 679
 680         case kShbExceedDataSizeLimit:
 681                 Ret = kEplDllAsyncTxBufferFull;
 682                 break;
 683
 684         case kShbBufferFull:
 685                 Ret = kEplDllAsyncTxBufferFull;
 686                 break;
 687
 688         case kShbInvalidArg:
 689         default:
 690                 Ret = kEplNoResource;
 691                 break;
 692         }
 693
 694 #else
 695
 696         switch (Priority_p) {
 697         case kEplDllAsyncReqPrioNmt:    // NMT request priority
 698                 if (EplDllkCalInstance_g.m_uiFrameSizeNmt == 0) {
 699                         EPL_MEMCPY(EplDllkCalInstance_g.m_abFrameNmt,
 700                                    pFrameInfo_p->m_pFrame,
 701                                    pFrameInfo_p->m_uiFrameSize);
 702                         EplDllkCalInstance_g.m_uiFrameSizeNmt =
 703                             pFrameInfo_p->m_uiFrameSize;
 704                 } else {
 705                         Ret = kEplDllAsyncTxBufferFull;
 706                         goto Exit;
 707                 }
 708                 break;
 709
 710         default:                // generic priority
 711                 if (EplDllkCalInstance_g.m_uiFrameSizeGen == 0) {
 712                         EPL_MEMCPY(EplDllkCalInstance_g.m_abFrameGen,
 713                                    pFrameInfo_p->m_pFrame,
 714                                    pFrameInfo_p->m_uiFrameSize);
 715                         EplDllkCalInstance_g.m_uiFrameSizeGen =
 716                             pFrameInfo_p->m_uiFrameSize;
 717                 } else {
 718                         Ret = kEplDllAsyncTxBufferFull;
 719                         goto Exit;
 720                 }
 721                 break;
 722         }
 723
 724 #endif
 725
 726         // post event to DLL
 727         Event.m_EventSink = kEplEventSinkDllk;
 728         Event.m_EventType = kEplEventTypeDllkFillTx;
 729         EPL_MEMSET(&Event.m_NetTime, 0x00, sizeof(Event.m_NetTime));
 730         Event.m_pArg = &Priority_p;
 731         Event.m_uiSize = sizeof(Priority_p);
 732         Ret = EplEventkPost(&Event);
 733
 734 #ifdef EPL_NO_FIFO
 735       Exit:
 736 #endif
 737
 738         return Ret;
 739 }
 740
 741 //---------------------------------------------------------------------------
 742 //
 743 // Function:    EplDllkCalAsyncClearBuffer()
 744 //
 745 // Description: clears the transmit buffer
 746 //
 747 // Parameters:  (none)
 748 //
 749 // Returns:     tEplKernel              = error code
 750 //
 751 //
 752 // State:
 753 //
 754 //---------------------------------------------------------------------------
 755
 756 tEplKernel EplDllkCalAsyncClearBuffer(void)
 757 {
 758         tEplKernel Ret = kEplSuccessful;
 759 #ifndef EPL_NO_FIFO
 760         tShbError ShbError;
 761
 762         ShbError =
 763             ShbCirResetBuffer(EplDllkCalInstance_g.m_ShbInstanceTxNmt, 1000,
 764                               NULL);
 765         ShbError =
 766             ShbCirResetBuffer(EplDllkCalInstance_g.m_ShbInstanceTxGen, 1000,
 767                               NULL);
 768
 769 #else
 770         EplDllkCalInstance_g.m_uiFrameSizeNmt = 0;
 771         EplDllkCalInstance_g.m_uiFrameSizeGen = 0;
 772 #endif
 773
 774 //    EPL_MEMSET(&EplDllkCalInstance_g.m_Statistics, 0, sizeof (tEplDllkCalStatistics));
 775         return Ret;
 776 }
 777
 778 //---------------------------------------------------------------------------
 779 //
 780 // Function:    EplDllkCalAsyncClearQueues()
 781 //
 782 // Description: clears the transmit buffer
 783 //
 784 // Parameters:  (none)
 785 //
 786 // Returns:     tEplKernel              = error code
 787 //
 788 //
 789 // State:
 790 //
 791 //---------------------------------------------------------------------------
 792
 793 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 794 tEplKernel EplDllkCalAsyncClearQueues(void)
 795 {
 796         tEplKernel Ret = kEplSuccessful;
 797
 798         // clear MN asynchronous queues
 799         EplDllkCalInstance_g.m_uiNextQueueCnRequest = 0;
 800         EplDllkCalInstance_g.m_uiNextRequestQueue = 0;
 801         EplDllkCalInstance_g.m_uiReadIdentReq = 0;
 802         EplDllkCalInstance_g.m_uiWriteIdentReq = 0;
 803         EplDllkCalInstance_g.m_uiReadStatusReq = 0;
 804         EplDllkCalInstance_g.m_uiWriteStatusReq = 0;
 805
 806         return Ret;
 807 }
 808 #endif
 809
 810 //---------------------------------------------------------------------------
 811 //
 812 // Function:    EplDllkCalGetStatistics()
 813 //
 814 // Description: returns statistics of the asynchronous queues.
 815 //
 816 // Parameters:  ppStatistics            = statistics structure
 817 //
 818 // Returns:     tEplKernel              = error code
 819 //
 820 //
 821 // State:
 822 //
 823 //---------------------------------------------------------------------------
 824
 825 tEplKernel EplDllkCalGetStatistics(tEplDllkCalStatistics ** ppStatistics)
 826 {
 827         tEplKernel Ret = kEplSuccessful;
 828 #ifndef EPL_NO_FIFO
 829         tShbError ShbError;
 830
 831         ShbError =
 832             ShbCirGetReadBlockCount(EplDllkCalInstance_g.m_ShbInstanceTxNmt,
 833                                     &EplDllkCalInstance_g.m_Statistics.
 834                                     m_ulCurTxFrameCountNmt);
 835         ShbError =
 836             ShbCirGetReadBlockCount(EplDllkCalInstance_g.m_ShbInstanceTxGen,
 837                                     &EplDllkCalInstance_g.m_Statistics.
 838                                     m_ulCurTxFrameCountGen);
 839 //    ShbError = ShbCirGetReadBlockCount (EplDllkCalInstance_g.m_ShbInstanceRx, &EplDllkCalInstance_g.m_Statistics.m_ulCurRxFrameCount);
 840
 841 #else
 842         if (EplDllkCalInstance_g.m_uiFrameSizeNmt > 0) {
 843                 EplDllkCalInstance_g.m_Statistics.m_ulCurTxFrameCountNmt = 1;
 844         } else {
 845                 EplDllkCalInstance_g.m_Statistics.m_ulCurTxFrameCountNmt = 0;
 846         }
 847         if (EplDllkCalInstance_g.m_uiFrameSizeGen > 0) {
 848                 EplDllkCalInstance_g.m_Statistics.m_ulCurTxFrameCountGen = 1;
 849         } else {
 850                 EplDllkCalInstance_g.m_Statistics.m_ulCurTxFrameCountGen = 0;
 851         }
 852 #endif
 853
 854         *ppStatistics = &EplDllkCalInstance_g.m_Statistics;
 855         return Ret;
 856 }
 857
 858 #if (((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
 859
 860 //---------------------------------------------------------------------------
 861 //
 862 // Function:    EplDllkCalIssueRequest()
 863 //
 864 // Description: issues a StatusRequest or a IdentRequest to the specified node.
 865 //
 866 // Parameters:  Service_p               = request service ID
 867 //              uiNodeId_p              = node ID
 868 //              bSoaFlag1_p             = flag1 for this node (transmit in SoA and PReq)
 869 //                                        If 0xFF this flag is ignored.
 870 //
 871 // Returns:     tEplKernel              = error code
 872 //
 873 //
 874 // State:
 875 //
 876 //---------------------------------------------------------------------------
 877
 878 tEplKernel EplDllkCalIssueRequest(tEplDllReqServiceId Service_p,
 879                                   unsigned int uiNodeId_p, u8 bSoaFlag1_p)
 880 {
 881         tEplKernel Ret = kEplSuccessful;
 882
 883         if (bSoaFlag1_p != 0xFF) {
 884                 Ret = EplDllkSetFlag1OfNode(uiNodeId_p, bSoaFlag1_p);
 885                 if (Ret != kEplSuccessful) {
 886                         goto Exit;
 887                 }
 888         }
 889         // add node to appropriate request queue
 890         switch (Service_p) {
 891         case kEplDllReqServiceIdent:
 892                 {
 893                         if (((EplDllkCalInstance_g.m_uiWriteIdentReq +
 894                               1) %
 895                              tabentries(EplDllkCalInstance_g.
 896                                         m_auiQueueIdentReq))
 897                             == EplDllkCalInstance_g.m_uiReadIdentReq) { // queue is full
 898                                 Ret = kEplDllAsyncTxBufferFull;
 899                                 goto Exit;
 900                         }
 901                         EplDllkCalInstance_g.
 902                             m_auiQueueIdentReq[EplDllkCalInstance_g.
 903                                                m_uiWriteIdentReq] = uiNodeId_p;
 904                         EplDllkCalInstance_g.m_uiWriteIdentReq =
 905                             (EplDllkCalInstance_g.m_uiWriteIdentReq +
 906                              1) %
 907                             tabentries(EplDllkCalInstance_g.m_auiQueueIdentReq);
 908                         break;
 909                 }
 910
 911         case kEplDllReqServiceStatus:
 912                 {
 913                         if (((EplDllkCalInstance_g.m_uiWriteStatusReq +
 914                               1) %
 915                              tabentries(EplDllkCalInstance_g.
 916                                         m_auiQueueStatusReq))
 917                             == EplDllkCalInstance_g.m_uiReadStatusReq) {        // queue is full
 918                                 Ret = kEplDllAsyncTxBufferFull;
 919                                 goto Exit;
 920                         }
 921                         EplDllkCalInstance_g.
 922                             m_auiQueueStatusReq[EplDllkCalInstance_g.
 923                                                 m_uiWriteStatusReq] =
 924                             uiNodeId_p;
 925                         EplDllkCalInstance_g.m_uiWriteStatusReq =
 926                             (EplDllkCalInstance_g.m_uiWriteStatusReq +
 927                              1) %
 928                             tabentries(EplDllkCalInstance_g.
 929                                        m_auiQueueStatusReq);
 930                         break;
 931                 }
 932
 933         default:
 934                 {
 935                         Ret = kEplDllInvalidParam;
 936                         goto Exit;
 937                 }
 938         }
 939
 940       Exit:
 941         return Ret;
 942 }
 943
 944 //---------------------------------------------------------------------------
 945 //
 946 // Function:    EplDllkCalAsyncGetSoaRequest()
 947 //
 948 // Description: returns next request for SoA. This function is called by DLLk module.
 949 //
 950 // Parameters:  pReqServiceId_p         = pointer to request service ID
 951 //                                        IN: available request for MN NMT or generic request queue (Flag2.PR)
 952 //                                            or kEplDllReqServiceNo if queues are empty
 953 //                                        OUT: next request
 954 //              puiNodeId_p             = OUT: pointer to node ID of next request
 955 //                                             = EPL_C_ADR_INVALID, if request is self addressed
 956 //
 957 // Returns:     tEplKernel              = error code
 958 //
 959 //
 960 // State:
 961 //
 962 //---------------------------------------------------------------------------
 963
 964 tEplKernel EplDllkCalAsyncGetSoaRequest(tEplDllReqServiceId * pReqServiceId_p,
 965                                         unsigned int *puiNodeId_p)
 966 {
 967         tEplKernel Ret = kEplSuccessful;
 968         unsigned int uiCount;
 969
 970 //    *pReqServiceId_p = kEplDllReqServiceNo;
 971
 972         for (uiCount = EPL_DLLKCAL_MAX_QUEUES; uiCount > 0; uiCount--) {
 973                 switch (EplDllkCalInstance_g.m_uiNextRequestQueue) {
 974                 case 0:
 975                         {       // CnGenReq
 976                                 for (;
 977                                      EplDllkCalInstance_g.
 978                                      m_uiNextQueueCnRequest <
 979                                      (tabentries
 980                                       (EplDllkCalInstance_g.
 981                                        m_auiQueueCnRequests) / 2);
 982                                      EplDllkCalInstance_g.
 983                                      m_uiNextQueueCnRequest++) {
 984                                         if (EplDllkCalInstance_g.m_auiQueueCnRequests[EplDllkCalInstance_g.m_uiNextQueueCnRequest] > 0) {       // non empty queue found
 985                                                 // remove one request from queue
 986                                                 EplDllkCalInstance_g.
 987                                                     m_auiQueueCnRequests
 988                                                     [EplDllkCalInstance_g.
 989                                                      m_uiNextQueueCnRequest]--;
 990                                                 *puiNodeId_p =
 991                                                     EplDllkCalInstance_g.
 992                                                     m_uiNextQueueCnRequest + 1;
 993                                                 *pReqServiceId_p =
 994                                                     kEplDllReqServiceUnspecified;
 995                                                 EplDllkCalInstance_g.
 996                                                     m_uiNextQueueCnRequest++;
 997                                                 if (EplDllkCalInstance_g.m_uiNextQueueCnRequest >= (tabentries(EplDllkCalInstance_g.m_auiQueueCnRequests) / 2)) {       // last node reached
 998                                                         // continue with CnNmtReq queue at next SoA
 999                                                         EplDllkCalInstance_g.
1000                                                             m_uiNextRequestQueue
1001                                                             = 1;
1002                                                 }
1003                                                 goto Exit;
1004                                         }
1005                                 }
1006                                 // all CnGenReq queues are empty -> continue with CnNmtReq queue
1007                                 EplDllkCalInstance_g.m_uiNextRequestQueue = 1;
1008                                 break;
1009                         }
1010
1011                 case 1:
1012                         {       // CnNmtReq
1013                                 for (;
1014                                      EplDllkCalInstance_g.
1015                                      m_uiNextQueueCnRequest <
1016                                      tabentries(EplDllkCalInstance_g.
1017                                                 m_auiQueueCnRequests);
1018                                      EplDllkCalInstance_g.
1019                                      m_uiNextQueueCnRequest++) {
1020                                         if (EplDllkCalInstance_g.m_auiQueueCnRequests[EplDllkCalInstance_g.m_uiNextQueueCnRequest] > 0) {       // non empty queue found
1021                                                 // remove one request from queue
1022                                                 EplDllkCalInstance_g.
1023                                                     m_auiQueueCnRequests
1024                                                     [EplDllkCalInstance_g.
1025                                                      m_uiNextQueueCnRequest]--;
1026                                                 *puiNodeId_p =
1027                                                     EplDllkCalInstance_g.
1028                                                     m_uiNextQueueCnRequest + 1 -
1029                                                     (tabentries
1030                                                      (EplDllkCalInstance_g.
1031                                                       m_auiQueueCnRequests) /
1032                                                      2);
1033                                                 *pReqServiceId_p =
1034                                                     kEplDllReqServiceNmtRequest;
1035                                                 EplDllkCalInstance_g.
1036                                                     m_uiNextQueueCnRequest++;
1037                                                 if (EplDllkCalInstance_g.m_uiNextQueueCnRequest > tabentries(EplDllkCalInstance_g.m_auiQueueCnRequests)) {      // last node reached
1038                                                         // restart CnGenReq queue
1039                                                         EplDllkCalInstance_g.
1040                                                             m_uiNextQueueCnRequest
1041                                                             = 0;
1042                                                         // continue with MnGenReq queue at next SoA
1043                                                         EplDllkCalInstance_g.
1044                                                             m_uiNextRequestQueue
1045                                                             = 2;
1046                                                 }
1047                                                 goto Exit;
1048                                         }
1049                                 }
1050                                 // restart CnGenReq queue
1051                                 EplDllkCalInstance_g.m_uiNextQueueCnRequest = 0;
1052                                 // all CnNmtReq queues are empty -> continue with MnGenReq queue
1053                                 EplDllkCalInstance_g.m_uiNextRequestQueue = 2;
1054                                 break;
1055                         }
1056
1057                 case 2:
1058                         {       // MnNmtReq and MnGenReq
1059                                 // next queue will be MnIdentReq queue
1060                                 EplDllkCalInstance_g.m_uiNextRequestQueue = 3;
1061                                 if (*pReqServiceId_p != kEplDllReqServiceNo) {
1062                                         *puiNodeId_p = EPL_C_ADR_INVALID;       // DLLk must exchange this with the actual node ID
1063                                         goto Exit;
1064                                 }
1065                                 break;
1066                         }
1067
1068                 case 3:
1069                         {       // MnIdentReq
1070                                 // next queue will be MnStatusReq queue
1071                                 EplDllkCalInstance_g.m_uiNextRequestQueue = 4;
1072                                 if (EplDllkCalInstance_g.m_uiReadIdentReq != EplDllkCalInstance_g.m_uiWriteIdentReq) {  // queue is not empty
1073                                         *puiNodeId_p =
1074                                             EplDllkCalInstance_g.
1075                                             m_auiQueueIdentReq
1076                                             [EplDllkCalInstance_g.
1077                                              m_uiReadIdentReq];
1078                                         EplDllkCalInstance_g.m_uiReadIdentReq =
1079                                             (EplDllkCalInstance_g.
1080                                              m_uiReadIdentReq +
1081                                              1) %
1082                                             tabentries(EplDllkCalInstance_g.
1083                                                        m_auiQueueIdentReq);
1084                                         *pReqServiceId_p =
1085                                             kEplDllReqServiceIdent;
1086                                         goto Exit;
1087                                 }
1088                                 break;
1089                         }
1090
1091                 case 4:
1092                         {       // MnStatusReq
1093                                 // next queue will be CnGenReq queue
1094                                 EplDllkCalInstance_g.m_uiNextRequestQueue = 0;
1095                                 if (EplDllkCalInstance_g.m_uiReadStatusReq != EplDllkCalInstance_g.m_uiWriteStatusReq) {        // queue is not empty
1096                                         *puiNodeId_p =
1097                                             EplDllkCalInstance_g.
1098                                             m_auiQueueStatusReq
1099                                             [EplDllkCalInstance_g.
1100                                              m_uiReadStatusReq];
1101                                         EplDllkCalInstance_g.m_uiReadStatusReq =
1102                                             (EplDllkCalInstance_g.
1103                                              m_uiReadStatusReq +
1104                                              1) %
1105                                             tabentries(EplDllkCalInstance_g.
1106                                                        m_auiQueueStatusReq);
1107                                         *pReqServiceId_p =
1108                                             kEplDllReqServiceStatus;
1109                                         goto Exit;
1110                                 }
1111                                 break;
1112                         }
1113
1114                 }
1115         }
1116
1117       Exit:
1118         return Ret;
1119 }
1120
1121 //---------------------------------------------------------------------------
1122 //
1123 // Function:    EplDllkCalAsyncSetPendingRequests()
1124 //
1125 // Description: sets the pending asynchronous frame requests of the specified node.
1126 //              This will add the node to the asynchronous request scheduler.
1127 //
1128 // Parameters:  uiNodeId_p              = node ID
1129 //              AsyncReqPrio_p          = asynchronous request priority
1130 //              uiCount_p               = count of asynchronous frames
1131 //
1132 // Returns:     tEplKernel              = error code
1133 //
1134 //
1135 // State:
1136 //
1137 //---------------------------------------------------------------------------
1138
1139 tEplKernel EplDllkCalAsyncSetPendingRequests(unsigned int uiNodeId_p,
1140                                              tEplDllAsyncReqPriority
1141                                              AsyncReqPrio_p,
1142                                              unsigned int uiCount_p)
1143 {
1144         tEplKernel Ret = kEplSuccessful;
1145
1146         // add node to appropriate request queue
1147         switch (AsyncReqPrio_p) {
1148         case kEplDllAsyncReqPrioNmt:
1149                 {
1150                         uiNodeId_p--;
1151                         if (uiNodeId_p >=
1152                             (tabentries
1153                              (EplDllkCalInstance_g.m_auiQueueCnRequests) / 2)) {
1154                                 Ret = kEplDllInvalidParam;
1155                                 goto Exit;
1156                         }
1157                         uiNodeId_p +=
1158                             tabentries(EplDllkCalInstance_g.
1159                                        m_auiQueueCnRequests) / 2;
1160                         EplDllkCalInstance_g.m_auiQueueCnRequests[uiNodeId_p] =
1161                             uiCount_p;
1162                         break;
1163                 }
1164
1165         default:
1166                 {
1167                         uiNodeId_p--;
1168                         if (uiNodeId_p >=
1169                             (tabentries
1170                              (EplDllkCalInstance_g.m_auiQueueCnRequests) / 2)) {
1171                                 Ret = kEplDllInvalidParam;
1172                                 goto Exit;
1173                         }
1174                         EplDllkCalInstance_g.m_auiQueueCnRequests[uiNodeId_p] =
1175                             uiCount_p;
1176                         break;
1177                 }
1178         }
1179
1180       Exit:
1181         return Ret;
1182 }
1183 #endif //(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_NMT_MN)) != 0)
1184
1185 //=========================================================================//
1186 //                                                                         //
1187 //          P R I V A T E   F U N C T I O N S                              //
1188 //                                                                         //
1189 //=========================================================================//
1190
1191 //---------------------------------------------------------------------------
1192 //  Callback handler for new data signaling
1193 //---------------------------------------------------------------------------
1194
1195 #ifndef EPL_NO_FIFO
1196 /*static void  EplDllkCalTxNmtSignalHandler (
1197     tShbInstance pShbRxInstance_p,
1198     unsigned long ulDataSize_p)
1199 {
1200 tEplKernel      Ret = kEplSuccessful;
1201 tEplEvent       Event;
1202 tEplDllAsyncReqPriority Priority;
1203 #ifndef EPL_NO_FIFO
1204 tShbError   ShbError;
1205 unsigned long   ulBlockCount;
1206
1207     ShbError = ShbCirGetReadBlockCount (EplDllkCalInstance_g.m_ShbInstanceTxNmt, &ulBlockCount);
1208     if (ulBlockCount > EplDllkCalInstance_g.m_Statistics.m_ulMaxTxFrameCountNmt)
1209     {
1210         EplDllkCalInstance_g.m_Statistics.m_ulMaxTxFrameCountNmt = ulBlockCount;
1211     }
1212
1213 #endif
1214
1215     // post event to DLL
1216     Priority = kEplDllAsyncReqPrioNmt;
1217     Event.m_EventSink = kEplEventSinkDllk;
1218     Event.m_EventType = kEplEventTypeDllkFillTx;
1219     EPL_MEMSET(&Event.m_NetTime, 0x00, sizeof(Event.m_NetTime));
1220     Event.m_pArg = &Priority;
1221     Event.m_uiSize = sizeof(Priority);
1222     Ret = EplEventkPost(&Event);
1223
1224 }
1225
1226 static void  EplDllkCalTxGenSignalHandler (
1227     tShbInstance pShbRxInstance_p,
1228     unsigned long ulDataSize_p)
1229 {
1230 tEplKernel      Ret = kEplSuccessful;
1231 tEplEvent       Event;
1232 tEplDllAsyncReqPriority Priority;
1233 #ifndef EPL_NO_FIFO
1234 tShbError   ShbError;
1235 unsigned long   ulBlockCount;
1236
1237     ShbError = ShbCirGetReadBlockCount (EplDllkCalInstance_g.m_ShbInstanceTxGen, &ulBlockCount);
1238     if (ulBlockCount > EplDllkCalInstance_g.m_Statistics.m_ulMaxTxFrameCountGen)
1239     {
1240         EplDllkCalInstance_g.m_Statistics.m_ulMaxTxFrameCountGen = ulBlockCount;
1241     }
1242
1243 #endif
1244
1245     // post event to DLL
1246     Priority = kEplDllAsyncReqPrioGeneric;
1247     Event.m_EventSink = kEplEventSinkDllk;
1248     Event.m_EventType = kEplEventTypeDllkFillTx;
1249     EPL_MEMSET(&Event.m_NetTime, 0x00, sizeof(Event.m_NetTime));
1250     Event.m_pArg = &Priority;
1251     Event.m_uiSize = sizeof(Priority);
1252     Ret = EplEventkPost(&Event);
1253
1254 }
1255 */
1256 #endif
1257
1258 #endif // #if(((EPL_MODULE_INTEGRATION) & (EPL_MODULE_DLLK)) != 0)
1259
1260 // EOF