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view src/g23m-gprs/cl/cl_nwrl.c @ 268:f2e52cab0a73

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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)
|  Module  :  CL
|  File    :  cl_nwrl.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 file implements common library functions related to the
|             network release(in this case, SGSN release) for all entities of 
|             the GPRS protocol stack
+----------------------------------------------------------------------------- 
*/ 

#ifndef CL_NWRL_C
#define CL_NWRL_C
#endif

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

#include "typedefs.h"    /* to get Condat data types */
#include "vsi.h"
#include "p_cl.val"  /* to get the type of sgsn_rel*/
#include "p_8010_152_ps_include.h" /*to get T_PS_qos_rXX*/
#include "cl_inline.h"

LOCAL U8 sgsn_release;

/*
+------------------------------------------------------------------------------
| Function    : cl_nwrl_set_sgsn_release() 
+------------------------------------------------------------------------------
| Description : The function cl_nwrl_set_sgsn_release() sets the status of SGSN 
|               release as received in SI13, PSI1 and PSI13 messages. This is 
|               called by GRR during initialization after Power On, when 
|               processing SI13, PSI1 and PSI13
|
| Parameters  : U8 sgsn_rel
|
+------------------------------------------------------------------------------
*/

GLOBAL void cl_nwrl_set_sgsn_release(U8 sgsn_rel)
{
  TRACE_FUNCTION( "cl_nwrl_set_sgsn_release()" );
  sgsn_release = sgsn_rel;
}


/*
+------------------------------------------------------------------------------
| Function    : cl_nwrl_get_sgsn_release()
+------------------------------------------------------------------------------
| Description : The function cl_nwrl_get_sgsn_release() gets the status of SGSN
|               release. This is called up by entities such as GMM, SM that need
|               the SGSN release. It is advised to call this function only after
|               a cell re-selection as the SGSN release value is invalid during
|               cell re-selection.
|
| Parameters  : Nil
|
+------------------------------------------------------------------------------
*/

GLOBAL U8 cl_nwrl_get_sgsn_release()
{
  TRACE_FUNCTION( "cl_nwrl_get_sgsn_release()" );
  return sgsn_release;
}