view src/g23m-gprs/grr/grr_csp.c @ 268:f2e52cab0a73

abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents fa8dc04885d8
children
line wrap: on
line source

/* 
+----------------------------------------------------------------------------- 
|  Project :  GPRS (8441)
|  Modul   :  GRR
+----------------------------------------------------------------------------- 
|  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 module implements primitive handler functions for service
|             CS of entity GRR.
+----------------------------------------------------------------------------- 
*/ 
         
#ifndef GRR_CSP_C
#define GRR_CSP_C
#endif

#define ENTITY_GRR

/*==== 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 "ccdapi.h"     /* to get CCD API */
#include "cnf_grr.h"    /* to get cnf-definitions */
#include "mon_grr.h"    /* to get mon-definitions */
#include "prim.h"       /* to get the definitions of used SAP and directions */
#include "message.h"
#include "grr.h"        /* to get the global entity definitions */
#include "grr_f.h"
#include "grr_csf.h"

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

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

/*==== PUBLIC FUNCTIONS =====================================================*/
/*
+------------------------------------------------------------------------------
| Function    : cs_t3158
+------------------------------------------------------------------------------
| Description : Handles the timeout of timer T3158
|
| Parameters  : void
|
+------------------------------------------------------------------------------
*/
GLOBAL void cs_t3158 ( void )
{ 
#if defined (REL99) AND defined (TI_PS_FF_EMR)
  BOOL is_enh_meas = cs_is_enh_meas_reporting();
#endif

  TRACE_FUNCTION( "cs_t3158" );

  TRACE_EVENT( "T3158 timeout" );

  cs_store_rxlev_values( );
  cs_reset_all_rxlev_results( );

  switch( GET_STATE( CS ) )
  {
    case CS_IDLE:
  
      switch( GET_STATE( CS_MEAS ) )
      {
        case CS_MEAS_NULL:
          if( grr_is_pbcch_present( ) EQ FALSE )
          {
            cs_send_meas_rep_req( NC_REPORT_MEAS );

            SET_STATE( CS_MEAS, CS_MEAS_REP_REQ ); 
          }
          else
          {
            SET_STATE( CS_MEAS, CS_MEAS_PMR_SENDING );

            
#if defined (REL99) AND defined (TI_PS_FF_EMR)
          if( ((is_enh_meas EQ TRUE) AND (cs_send_enh_meas_rpt() EQ FALSE))
              OR
              ((is_enh_meas EQ FALSE) AND (cs_send_meas_rpt(TRUE) EQ FALSE)) )
#else
          if( cs_send_meas_rpt( TRUE ) EQ FALSE )
#endif

            {
              /*
               * The additional state check is necessary because signals might
               * be send during the processing of the function cs_send_meas_rpt.
               */
              if( GET_STATE( CS_MEAS ) EQ CS_MEAS_PMR_SENDING )
              {
                SET_STATE( CS_MEAS, CS_MEAS_NULL );
              }
            }
          }
          break;

        default:
          break;
      }
 
      cs_process_t3158( );
      break;

    case CS_CR_NETWORK:
    default:
      /*
       * RR performs an IA reject procedure resulting in a cell re-selection 
       * when timer T3158 expires. Timeout of T3158 resulted in a "T3158 timeout
       * unexpected", this should be avoided.
       */
      cs_process_t3158( );
      break;
  }
} /* cs_t3158() */

/*
+------------------------------------------------------------------------------
| Function    : cs_t_reselect
+------------------------------------------------------------------------------
| Description : Handles the timeout of timer T_RESELECT
|
| Parameters  : void
|
+------------------------------------------------------------------------------
*/
GLOBAL void cs_t_reselect ( void )
{ 
  TRACE_FUNCTION( "cs_t_reselect" );

  if( grr_t_status( T3174 ) > 0 )
  {
    TRACE_EVENT( "t_reslect expired when t3174 is running" );
    return;
  }
  cs_cr_decision( CRDM_T_RESELECT );
} /* cs_t_reselect() */