view src/g23m-gprs/llc/llc_irxp.c @ 686:59f07d67eb45

luna target split into luna1 and luna2 luna1 is FC Luna based on iWOW DSK v4.0 or v5.0 motherboard luna2 is FC Luna based on FC Caramel2 MB
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 12 Oct 2020 18:51:24 +0000
parents 219afcfc6250
children
line wrap: on
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/* 
+----------------------------------------------------------------------------- 
|  Project :  
|  Modul   :  
+----------------------------------------------------------------------------- 
|  Copyright 2002 Texas Instruments Berlin, AG 
|                 All rights reserved. 
| 
|                 This file is confidential and a trade secret of Texas 
|                 Instruments Berlin, AG 
|                 The receipt of or possession of this file does not convey 
|                 any rights to reproduce or disclose its contents or to 
|                 manufacture, use, or sell anything it may describe, in 
|                 whole, or in part, without the specific written consent of 
|                 Texas Instruments Berlin, AG. 
+----------------------------------------------------------------------------- 
|  Purpose :  This modul is part of the entity LLC and implements all 
|             functions to handles the incoming primitives as described in 
|             the SDL-documentation (IRX-statemachine)
+----------------------------------------------------------------------------- 
*/ 

#ifndef LLC_IRXP_C
#define LLC_IRXP_C
#endif

#define ENTITY_LLC

/*==== INCLUDES =============================================================*/

#include "typedefs.h"   /* to get Condat data types */
#include "vsi.h"        /* to get a lot of macros */
#include "macdef.h"
#include "gprs.h"
#include "gsm.h"        /* to get a lot of macros */
#include "cnf_llc.h"    /* to get cnf-definitions */
#include "mon_llc.h"    /* to get mon-definitions */
#include "prim.h"       /* to get the definitions of used SAP and directions */
#include "llc.h"        /* to get the global entity definitions */

#include "llc_irxf.h"   /* to get IRX helper functions */


/*==== CONST ================================================================*/

/*==== LOCAL VARS ===========================================================*/

/*==== PRIVATE FUNCTIONS ====================================================*/

/*==== PUBLIC FUNCTIONS =====================================================*/

/*
+------------------------------------------------------------------------------
| Function    : irx_ll_getdata_req
+------------------------------------------------------------------------------
| Description : Handles the primitive LL_GETDATA_REQ
|
| Parameters  : *ll_getdata_req - Ptr to primitive payload
|
+------------------------------------------------------------------------------
*/
GLOBAL void irx_ll_getdata_req ( T_LL_GETDATA_REQ *ll_getdata_req )
{ 
  BOOL               frame_found;
  T_LL_UNITDATA_IND *ll_unitdata_ind;

  TRACE_FUNCTION( "ll_getdata_req" );

  SWITCH_LLC (ll_getdata_req->sapi);
 
  TRACE_1_PARA("s:%d", ll_getdata_req->sapi);

  switch (GET_STATE(IRX))
  {
    case IRX_TLLI_UNASSIGNED:
      /*
       * Ignore primitive.
       */
      PFREE (ll_getdata_req);
      /* SET_STATE (IRX, SAME_STATE); */
      break;

    case IRX_TLLI_ASSIGNED:
      /*
       * Store L3 ready flag
       */
      llc_data->irx->ll_send_ready = TRUE;
      PFREE (ll_getdata_req);
      /* SET_STATE (IRX, SAME_STATE); */
      break;

    case IRX_ABM:
      /*
       * Try to retrieve a frame from the queue and
       * forward it to L3, else store L3 ready flag.
       */
      irx_queue_retrieve (&ll_unitdata_ind, &frame_found);
      if (frame_found)
      {
        PPASS (ll_unitdata_ind, ll_data_ind, LL_DATA_IND);
        TRACE_2_OUT_PARA("s:%d len:%d", ll_data_ind->sapi, BYTELEN(ll_data_ind->sdu.l_buf));
        PSEND (hCommSNDCP, ll_data_ind);
        
        llc_data->irx->ll_send_ready = FALSE;

        /* SET_STATE (IRX, SAME_STATE); */
      }
      else
      {
        llc_data->irx->ll_send_ready = TRUE;

        /* SET_STATE (IRX, SAME_STATE); */
      }
      PFREE (ll_getdata_req);
      break;

    case IRX_ABM_BUSY:
      /*
       * Try to retrieve a frame from the queue and
       * forward it to L3, else store L3 ready flag.
       */
      irx_queue_retrieve (&ll_unitdata_ind, &frame_found);
      if (frame_found)
      {
        PPASS (ll_unitdata_ind, ll_data_ind, LL_DATA_IND);
        TRACE_2_OUT_PARA("s:%d len:%d", ll_data_ind->sapi, BYTELEN(ll_data_ind->sdu.l_buf));
        PSEND (hCommSNDCP, ll_data_ind);

        llc_data->irx->ll_send_ready = FALSE;

        /*
         * Indicate the clearance of the 'own received 
         * busy' condition to the peer entity
         */
        irx_send_ack (ABIT_SET_REQ);

        SET_STATE (IRX, IRX_ABM);
      }
      else
      {
        llc_data->irx->ll_send_ready = TRUE;

        /* SET_STATE (IRX, SAME_STATE); */
      }
      PFREE (ll_getdata_req);
      break;

    default:
      PFREE (ll_getdata_req);
      TRACE_ERROR( "LL_GETDATA_REQ unexpected" );
      break;
  }

} /* irx_ll_getdata_req() */