view src/g23m-gprs/gmm/gmm_syncf.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
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/* 
+----------------------------------------------------------------------------- 
|  Project :  GPRS (8441)
|  Modul   :  gmm_syncf.c
+----------------------------------------------------------------------------- 
|  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 GMM and implements all
|             procedures and functions as described in the
|             SDL-documentation (SYNC-statemachine)
+----------------------------------------------------------------------------- 
*/ 

#ifndef GMM_SYNCF_C
#define GMM_SYNCF_C
#endif

#define ENTITY_GMM

/*==== 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_gmm.h"    /* to get cnf-definitions */
#include "mon_gmm.h"    /* to get mon-definitions */
#include "prim.h"       /* to get the definitions of used SAP and directions */
#include "gmm.h"        /* to get the global entity definitions */
#include "gmm_kerns.h"    /* to get some signals */

#include <string.h>     /* to get memset */

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

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

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

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



/*
+------------------------------------------------------------------------------
| Function    : rxgmm_init
+------------------------------------------------------------------------------
| Description : The function rxgmm_init() ....
|
| Parameters  : void
|
+------------------------------------------------------------------------------
*/
GLOBAL void sync_gmm_init ( void )
{
  TRACE_FUNCTION( "sync_gmm_init" );

  /*
   * Initialise service SYNC with state SYNC_IDLE.
   */
  gmm_data->sync.grr_cell_info.net_mode = GMMRR_NET_MODE_II;
  gmm_data->sync.mm_cell_info.status= MMGMM_LIMITED_SERVICE;
  gmm_data->sync.sig_cell_info.env.rai.rac = GMMRR_RAC_INVALID;
  gmm_data->sync.mm_cell_info.cid = 0xff;
  gmm_data->sync.grr_cell_info.cell_env.cid= 0xff;
  gmm_data->sync.mm_cell_info.lac = GMMRR_LA_INVALID;
  gmm_data->sync.grr_cell_info.cell_env.rai.lac = GMMRR_LA_INVALID;

#ifdef REL99
  /* sgsnr_flag should be initialized to a value 0 (CL_SGSN_REL_98_OR_OLDER).
   * SM also will initialize the value of sgsnr_flag in its
   * context to 0. GMM will update SM when the value changes.
   */
  gmm_data->kern.sig_cell_info.sgsnr_flag =  PS_SGSN_98_OLDER; /* TCS 4.0 */
#endif    

  INIT_STATE ( SYNC, SYNC_IDLE );
  vsi_t_stop  ( GMM_handle, sync_TSYNC);
} /* sync_gmm_init() */

/*
+------------------------------------------------------------------------------
| Function    : sync_is_cid_equal
+------------------------------------------------------------------------------
| Description : The function sync_is_cid_equal() ....
|
| Parameters  : void
|
+------------------------------------------------------------------------------
*/
GLOBAL BOOL sync_is_cid_equal ()
{
  GMM_TRACE_FUNCTION( "sync_is_cid_equal" );

  GMM_RETURN_ (
      gmm_data->sync.mm_cell_info.cid == gmm_data->sync.grr_cell_info.cell_env.cid
    && gmm_data->sync.mm_cell_info.lac == gmm_data->sync.grr_cell_info.cell_env.rai.lac
    && memcmp (gmm_data->sync.mm_cell_info.plmn.mnc, gmm_data->sync.grr_cell_info.cell_env.rai.plmn.mnc, SIZE_MNC)==0
    && memcmp (gmm_data->sync.mm_cell_info.plmn.mcc, gmm_data->sync.grr_cell_info.cell_env.rai.plmn.mcc, SIZE_MCC)==0
    );
} /* sync_sync_is_cid_equal() */

/*
+------------------------------------------------------------------------------
| Function    : sync_send_cell_info
+------------------------------------------------------------------------------
| Description : The function sync_send_cell_info() ....
|
| Parameters  : void
|
+------------------------------------------------------------------------------
*/
GLOBAL void sync_send_cell_info()
{
  GMM_TRACE_FUNCTION( "sync_send_cell_info" );

  gmm_data->sync.sig_cell_info.env = gmm_data->sync.grr_cell_info.cell_env;
  gmm_data->sync.sig_cell_info.net_mode = gmm_data->sync.grr_cell_info.net_mode;
#ifdef GMM_TCS4
  gmm_data->sync.sig_cell_info.rt = gmm_data->sync.grr_cell_info.rt;
#endif
  /* MM */
  gmm_data->sync.sig_cell_info.mm_status  = gmm_data->sync.mm_cell_info.status;

  gmm_data->sync.sig_cell_info.t3212_val     = gmm_data->sync.mm_cell_info.t3212_val;



  /* GRR */
  if ( MMGMM_GPRS_SUPP_NO == gmm_data->sync.mm_cell_info.gprs_indicator)
  {
    gmm_data->sync.sig_cell_info.gmm_status = GMMRR_SERVICE_NONE;
    gmm_data->sync.sig_cell_info.env.cid  = gmm_data->sync.mm_cell_info.cid;
    gmm_data->sync.sig_cell_info.env.rai.lac = gmm_data->sync.mm_cell_info.lac;
    gmm_data->sync.sig_cell_info.env.rai.plmn = gmm_data->sync.mm_cell_info.plmn;
    gmm_data->sync.sig_cell_info.net_mode = GMMRR_NET_MODE_II;
  }
  else
  {
    gmm_data->sync.sig_cell_info.gmm_status = gmm_data->sync.grr_cell_info.service_state;
    if (GMMRR_SERVICE_NONE==gmm_data->sync.sig_cell_info.gmm_status)
    {
       gmm_data->sync.sig_cell_info.net_mode = GMMRR_NET_MODE_II;
    }

  }

  sig_sync_kern_cell_ind ( &gmm_data->sync.sig_cell_info );
  gmm_data->sync.sig_cell_info.gmmrr_cell_ind_received = FALSE;
  GMM_RETURN;
} /* sync_send_cell_info() */
/*
+------------------------------------------------------------------------------
| Function    : sync_send_mm_cell_info
+------------------------------------------------------------------------------
| Description : The function sync_send_cell_info() ....
|
| Parameters  : void
|
+------------------------------------------------------------------------------
*/
GLOBAL void sync_send_mm_cell_info()
{
  GMM_TRACE_FUNCTION( "sync_send_mm_cell_info" );

  gmm_data->sync.sig_cell_info.mm_status  = gmm_data->sync.mm_cell_info.status;

  gmm_data->sync.sig_cell_info.t3212_val     = gmm_data->sync.mm_cell_info.t3212_val;



  /* GRR */
  if ( MMGMM_GPRS_SUPP_NO == gmm_data->sync.mm_cell_info.gprs_indicator)
  {
    gmm_data->sync.sig_cell_info.gmm_status = GMMRR_SERVICE_NONE;
    gmm_data->sync.sig_cell_info.net_mode = GMMRR_NET_MODE_II;
  }

  gmm_data->sync.sig_cell_info.env.cid  = gmm_data->sync.mm_cell_info.cid;
  gmm_data->sync.sig_cell_info.env.rai.lac = gmm_data->sync.mm_cell_info.lac;
  gmm_data->sync.sig_cell_info.env.rai.plmn = gmm_data->sync.mm_cell_info.plmn;

  sig_sync_kern_cell_ind ( &gmm_data->sync.sig_cell_info );

  GMM_RETURN;
} /* sync_send_cell_info() */