--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/g23m-gprs/grr/grr_pgs.c	Fri Oct 16 06:25:50 2020 +0000
@@ -0,0 +1,457 @@
+/* 
++----------------------------------------------------------------------------- 
+|  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 signal handler functions for service
+|             PG of entity GRR.
++----------------------------------------------------------------------------- 
+*/ 
+
+#ifndef GRR_PGS_C
+#define GRR_PGS_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_ctrls.h"    /* */
+
+#include "grr_f.h"        /* to get the global functions */
+#include "grr_pgf.h"    /* */
+
+
+/*==== CONST ================================================================*/
+
+/*==== LOCAL VARS ===========================================================*/
+
+/*==== PRIVATE FUNCTIONS ====================================================*/
+
+/*==== PUBLIC FUNCTIONS =====================================================*/
+/*
++------------------------------------------------------------------------------
+| Function    : sig_ctrl_pg_start
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_CTRL_PG_START
+|               PG has to manage the paging procedures according to network mode
+|               and presence of PBCCH channel
+| Parameters  : void
+|
++------------------------------------------------------------------------------
+*/
+GLOBAL void sig_ctrl_pg_start ( void ) 
+{ 
+  TRACE_ISIG( "sig_ctrl_pg_start" );
+
+  switch( GET_STATE( PG ) )
+  {
+    case PG_TRANSFER:
+      TRACE_ERROR("SIG_CTRL_PG_START not expected in transfer mode");
+      break;
+    case PG_NULL:
+      SET_STATE(PG, PG_IDLE);
+      
+      /*lint -fallthrough*/
+
+    default:
+      /* Because of having new cell or new PPCH */
+      psc_db->last_pg_mode = psc_db->network_pg_mode = REORG_PAGING;
+
+      pg_handle_idle_mode( NULL_IDLE );
+      break;
+  }
+
+} /* sig_ctrl_pg_start() */
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_ctrl_pg_stop
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_CTRL_PG_STOP
+|
+| Parameters  : void
+|
++------------------------------------------------------------------------------
+*/
+GLOBAL void sig_ctrl_pg_stop ( void ) 
+{ 
+  TRACE_ISIG( "sig_ctrl_pg_stop" );
+  
+  grr_data->pg.packet_mode = PACKET_MODE_NULL;
+  SET_STATE(PG,PG_NULL);
+  pg_send_stop();
+  psc_db->last_pg_mode = psc_db->network_pg_mode = REORG_PAGING;
+} /* sig_ctrl_pg_stop() */
+
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_ctrl_pg_mode_ind
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_CTRL_PG_MODE_IND
+                This signal indicates whether the MS is in idle, transfer or access mode
+|
+| Parameters  : packet_mode
+|
++------------------------------------------------------------------------------
+*/
+GLOBAL void sig_ctrl_pg_mode_ind ( T_PACKET_MODE packet_mode) 
+{ 
+  T_PACKET_MODE old_packet_mode;
+
+  TRACE_ISIG( "sig_ctrl_pg_mode_ind" );
+  
+  old_packet_mode          = grr_data->pg.packet_mode;
+  grr_data->pg.packet_mode = packet_mode;
+
+  switch( GET_STATE( PG ) )
+  {
+    case PG_IDLE:
+      switch( packet_mode )
+      {
+        case PACKET_MODE_PTM:
+          SET_STATE( PG, PG_TRANSFER );
+
+          pg_handle_transfer_mode( IDLE_PTM );
+          break;
+
+        case PACKET_MODE_PAM:
+          SET_STATE( PG, PG_ACCESS );
+
+          pg_handle_access_mode( );
+          break;
+
+        default:
+          break;
+      }
+      break;
+
+    case PG_TRANSFER:
+      switch( packet_mode )
+      {
+        case PACKET_MODE_PAM:
+          SET_STATE( PG, PG_ACCESS );
+
+          pg_handle_access_mode( );
+          break;
+
+        case PACKET_MODE_PIM:
+          SET_STATE( PG, PG_IDLE );  
+
+          pg_handle_non_drx_timers( );
+          pg_handle_idle_mode( PTM_IDLE );
+          break;
+
+        case PACKET_MODE_PTM:
+          //TODOif( grr_test_mode_active( ) )
+          {
+            sig_pg_ctrl_stop_mon_ccch( );
+          }
+          break;
+      }
+      break;
+
+    case PG_ACCESS:
+      switch( packet_mode )
+      {
+        case PACKET_MODE_PAM:
+          if( old_packet_mode EQ PACKET_MODE_2P_PTM )
+          {
+            TRACE_EVENT( "PACKET_MODE_2P_PTM --> PACKET_MODE_PAM" );
+
+            pg_handle_access_mode( );
+          }
+          break;
+
+        case PACKET_MODE_2P_PTM:
+          /* 
+           * Do not change the state to PG_TRANSFER because of transition rule
+           */
+          TRACE_EVENT( "PACKET_MODE_2P_PTM in PG_ACCESS" );
+
+          pg_handle_transfer_mode( ACCESS_PTM );
+          break;          
+ 
+        case PACKET_MODE_PIM:
+          SET_STATE( PG, PG_IDLE );
+
+          pg_handle_idle_mode( ACCESS_IDLE );
+          break;
+
+        case PACKET_MODE_PTM:
+          SET_STATE( PG, PG_TRANSFER );
+
+          pg_handle_transfer_mode( ACCESS_PTM );
+          break;
+      }
+      break;    
+
+    default:
+      TRACE_ERROR( "SIG_CTRL_PG_MODE_IND unexpected" );
+      break;
+  }
+}/* sig_ctrl_pg_mode_ind() */
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_ctrl_pg_t3172_run
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_CTRL_PG_T3172_RUN
+|
+| Parameters  : void
+|
++------------------------------------------------------------------------------
+*/
+GLOBAL void sig_ctrl_pg_t3172_run ( void) 
+{ 
+  TRACE_ISIG( "sig_ctrl_pg_t3172_run" );
+  
+} /* sig_ctrl_pg_t3172_run() */
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_ctrl_pg_indication
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_CTRL_PG_INDICATION. This 
+|               signal indicates paging for packet access 
+|
+| Parameters  : UBYTE paging_type (IMSI or PTMSI(GPRS TMSI))
+|
++------------------------------------------------------------------------------
+*/
+GLOBAL void sig_ctrl_pg_indication ( UBYTE paging_type ) 
+{ 
+  UBYTE type;
+  
+  TRACE_ISIG( "sig_ctrl_pg_indication" );
+  
+  type = (paging_type EQ RRGRR_IMSI)? GMMRR_IMSI: GMMRR_PTMSI;
+  
+  switch( GET_STATE( PG ) )
+  {
+    case PG_IDLE:
+      sig_pg_ctrl_downlink_transfer ( type );
+      break;
+    case PG_ACCESS:
+      /* ignore PAGING REQUEST messages indicating a packet paging procedure*/
+      break;
+    default:
+      TRACE_ERROR( "SIG_CTRL_PG_INDICATION unexpected" );
+      break;
+  }
+} /* sig_ctrl_pg_indication() */
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_ctrl_pg_rr_est
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_CTRL_PG_RR_EST. This 
+|               signal indicates paging for RR connection.
+|               This signal makes no sense in case of Class C mobile
+|
+| Parameters  : no parameters
+|
++------------------------------------------------------------------------------
+*/
+GLOBAL void sig_ctrl_pg_rr_est ( void) 
+{ 
+ 
+  TRACE_ISIG( "sig_ctrl_pg_rr_est" );
+  
+  if(grr_data->ms.class_of_mode EQ GMMRR_CLASS_CG)
+  {
+    TRACE_ERROR("CLASS_CG MS has received a RR_EST ");  
+  }
+  else
+  {
+    switch( GET_STATE( PG ) )
+    {
+      case PG_NULL:  
+      case PG_IDLE:
+      case PG_ACCESS:
+        /* inform CTRL resp. GMM about the RR connection establishment request:
+         *  GMM has to decide whether accept the request or not
+         */
+        sig_pg_ctrl_rr_est_req(PG_ON_CCCH);
+        break;
+      case PG_TRANSFER:
+        if(grr_data->pg.nmo EQ GMMRR_NET_MODE_II)
+        {
+          TRACE_EVENT(" CS call in GMMRR_NET_MODE_II transfer mode");
+          sig_pg_ctrl_rr_est_req(PG_ON_CCCH);
+        }
+        else
+        {
+          TRACE_EVENT_P1("CS call in transfer mode NMO_%d", grr_data->pg.nmo+1);
+        }
+        break;
+      default:
+        TRACE_ERROR( "SIG_CTRL_PG_RR_EST unexpected" );
+        break;
+    }
+  }
+} /* sig_ctrl_pg_indication() */
+
+
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_gfp_pg_req
++------------------------------------------------------------------------------
+| Description : Handles
+|
+| Parameters  : void
+|
++------------------------------------------------------------------------------
+*/
+GLOBAL void sig_gfp_pg_req ( void )
+{ 
+  MCAST( d_paging_req, D_PAGING_REQ );
+
+  UBYTE state = GET_STATE( PG );
+
+  TRACE_ISIG( "sig_gfp_pg_req" );
+
+  switch( state )
+  {
+    case PG_IDLE:
+    case PG_TRANSFER:
+    case PG_ACCESS:
+      pg_process_pp_req( d_paging_req, state );
+      break;
+    default:
+      TRACE_ERROR( "sig_gfp_pg_req: page mode has no meaning in this state" );
+      break;
+  }
+} /* sig_gfp_pg_req() */
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_gfp_pg_mode
++------------------------------------------------------------------------------
+| Description : Handles 
+|
+| Parameters  : UBYTE page_mode:       requested page mode
+|               BOOL  ms_paging_group: paging belongs to MS paging group
+|
++------------------------------------------------------------------------------
+*/
+GLOBAL void sig_gfp_pg_mode ( UBYTE page_mode, BOOL ms_paging_group )
+{ 
+  TRACE_ISIG( "sig_gfp_pg_mode" );
+
+  if( ms_paging_group )
+  {
+    switch( GET_STATE( PG ) )
+    {
+      case PG_IDLE:
+        if( page_mode NEQ SAME_PAGING )
+        {
+          psc_db->network_pg_mode = page_mode;
+        }
+
+        if( grr_is_non_drx_period( ) EQ  FALSE                   AND
+            psc_db->last_pg_mode     NEQ psc_db->network_pg_mode     )
+        {
+          /*
+           * To ensure that the paging mode is not set to page normal in other states
+           * than packet idle mode, the function grr_is_packet_idle_mode is called in
+           * advance.
+           *
+           * State PG_IDLE not necessarily means that GRR is in packet idle mode. In
+           * case GRR is currently executing the RRGRR_STOP_TASK_REQ/CNF procedure,
+           * just the services CPAP and TC changes their states. All other services
+           * remain in state IDLE, which is not quite correct. A similar scenario
+           * occurs during execution of the MPHP_ASSIGNMENT_REQ/CON procedure.
+           */
+          if( grr_is_packet_idle_mode( ) EQ TRUE )
+          {
+            pg_send_start( psc_db->network_pg_mode );
+          }
+          else
+          {
+            TRACE_EVENT( "sig_gfp_pg_mode: Page mode set by next packet idle mode" );
+          }
+        }
+        break;
+
+      case PG_ACCESS:
+        if( page_mode NEQ SAME_PAGING )
+        {
+          psc_db->network_pg_mode = page_mode;
+        }
+        break;
+
+      default:
+
+#ifdef _SIMULATION_
+
+        TRACE_ERROR( "SIG_GFP_PG_MODE unexpected" );
+
+#endif /* #ifdef _SIMULATION_ */
+
+        break;
+    }
+  }
+} /* sig_gfp_pg_mode() */
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_gfp_pg_stop_pccch_con
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_GFP_PG_STOP_PCCCH_CON
+|
+| Parameters  : mphp_stop_pccch_con: pointer to T_MPHP_STOP_PCCCH_CON
+|
++------------------------------------------------------------------------------
+*/
+GLOBAL void sig_gfp_pg_stop_pccch_con ( T_MPHP_STOP_PCCCH_CON *mphp_stop_pccch_con) 
+{ 
+  TRACE_ISIG( "sig_gfp_pg_stop_pccch_con" );
+} /* sig_gfp_pg_stop_pccch_con() */
+
+/*
++------------------------------------------------------------------------------
+| Function    : sig_cs_pg_start_t_nc2_ndrx
++------------------------------------------------------------------------------
+| Description : Handles the internal signal SIG_CS_PG_START_NC2_NDRX
+|
+| Parameters  : void
+|
++------------------------------------------------------------------------------
+*/
+GLOBAL void sig_cs_pg_start_t_nc2_ndrx ( UBYTE nc_non_drx_period ) 
+{ 
+  TRACE_ISIG( "sig_cs_pg_start_t_nc2_ndrx" );
+
+  pg_start_t_nc2_ndrx( nc_non_drx_period );
+
+} /* sig_cs_pg_start_t_nc2_ndrx() */