+
−/* 
+
−+----------------------------------------------------------------------------- 
+
−|  Project :  GPRS (8441)
+
−|  Modul   :  sndcp_suf.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 SNDCP and implements all 
+
−|             procedures and functions as described in the 
+
−|             SDL-documentation (SU-statemachine)
+
−+----------------------------------------------------------------------------- 
+
−*/ 
+
−
+
−/*---- HISTORY --------------------------------------------------------------*/
+
−
+
−#define ENTITY_SNDCP
+
−
+
−/*==== INCLUDES =============================================================*/
+
−
+
−#include "typedefs.h"    /* to get Condat data types */
+
−#include "vsi.h"        /* to get a lot of macros */
+
−#include "macdef.h"
+
−#include "prim.h"       /* to get the definitions of used SAP and directions */
+
−
+
−#include "dti.h"
+
−
+
−#include "sndcp.h"        /* to get the global entity definitions */
+
−#include "sndcp_f.h"       /* to get the functions to access the global arrays*/
+
−
+
−#include "sndcp_nus.h"   /* to get signals to service nu */
+
−#include "sndcp_cias.h"   /* to get signals to service cia */
+
−
+
−/*==== CONST ================================================================*/
+
−
+
−/*==== LOCAL VARS ===========================================================*/
+
−
+
−/*==== PRIVATE FUNCTIONS ====================================================*/
+
−
+
−/*==== PUBLIC FUNCTIONS =====================================================*/
+
−#ifdef _SNDCP_DTI_2_
+
−
+
−/*
+
−+------------------------------------------------------------------------------
+
−| Function    : su_get_nsapi
+
−+------------------------------------------------------------------------------
+
−| Description : finde the affected nsapi in sn-PDU.
+
−|
+
−| Parameters  : ll_unitdata_req*
+
−| Returns     : the nsapi
+
−|
+
−+------------------------------------------------------------------------------
+
−*/
+
−GLOBAL U8 su_get_nsapi (T_LL_UNITDESC_REQ* ll_unitdesc_req) 
+
−{ 
+
−   T_desc3* desc3 = NULL;
+
−   U8 * sndcp_header = NULL;
+
−
+
−  /* Get the descriptor describing the memory area with the sndcp header */
+
−
+
−  desc3 = (T_desc3*)ll_unitdesc_req->desc_list3.first;
+
−  sndcp_header = (U8*)desc3->buffer;
+
−
+
−  TRACE_FUNCTION( "su_get_nsapi" );
+
−
+
−  return (*(sndcp_header + ENCODE_OFFSET_BYTE)) & 0xf;
+
−} /* sua_get_nsapi() */
+
−
+
−#else /* _SNDCP_DTI_2_ */
+
−
+
−/*
+
−+------------------------------------------------------------------------------
+
−| Function    : su_get_nsapi
+
−+------------------------------------------------------------------------------
+
−| Description : finde the affected nsapi in sn-PDU.
+
−|
+
−| Parameters  : ll_unitdata_req*
+
−| Returns     : the nsapi
+
−|
+
−+------------------------------------------------------------------------------
+
−*/
+
−GLOBAL UBYTE su_get_nsapi (T_LL_UNITDATA_REQ* ll_unitdata_req) 
+
−{ 
+
−  USHORT octet_offset = (ll_unitdata_req->sdu.o_buf) >> 3;
+
−
+
−  TRACE_FUNCTION( "su_get_nsapi" );
+
−
+
−  return ll_unitdata_req->sdu.buf[octet_offset] & 0xf;
+
−
+
−} /* su_get_nsapi() */
+
−
+
−#endif /* _SNDCP_DTI_2_ */
+
−
+
−/*
+
−+------------------------------------------------------------------------------
+
−| Function    : su_init
+
−+------------------------------------------------------------------------------
+
−| Description : The function su_init() .... 
+
−|
+
−| Parameters  : 
+
−|
+
−+------------------------------------------------------------------------------
+
−*/
+
−GLOBAL void su_init (void)
+
−{ 
+
−  TRACE_FUNCTION( "su_init" );
+
−
+
−  /*
+
−   * Not initialized:
+
−   * Members of sn_unitdata_q are not set to NULL.
+
−   * Members of npdu_number_q are not set to 0.
+
−   * Members of ll_unitdata_q are not set to NULL.
+
−   */
+
−
+
−  sndcp_data->su = & sndcp_data->su_base[0];
+
−  INIT_STATE(SU_0, SU_LLC_NOT_RECEPTIVE);
+
−#ifdef SNDCP_2to1
+
−  sndcp_data->su->sapi = PS_SAPI_3; 
+
−#else
+
−  sndcp_data->su->sapi = LL_SAPI_3; 
+
−#endif /*SNDCP_2to1*/
+
−
+
−  sndcp_data->su = & sndcp_data->su_base[1];
+
−  INIT_STATE(SU_1, SU_LLC_NOT_RECEPTIVE);
+
−#ifdef SNDCP_2to1
+
−  sndcp_data->su->sapi = PS_SAPI_5; 
+
−#else
+
−  sndcp_data->su->sapi = LL_SAPI_5; 
+
−#endif /*SNDCP_2to1*/
+
−
+
−  sndcp_data->su = & sndcp_data->su_base[2];
+
−  INIT_STATE(SU_2, SU_LLC_NOT_RECEPTIVE);
+
−#ifdef SNDCP_2to1
+
−  sndcp_data->su->sapi = PS_SAPI_9; 
+
−#else
+
−  sndcp_data->su->sapi = LL_SAPI_9; 
+
−#endif /*SNDCP_2to1*/
+
−
+
−  sndcp_data->su = & sndcp_data->su_base[3];
+
−  INIT_STATE(SU_3, SU_LLC_NOT_RECEPTIVE);
+
−#ifdef SNDCP_2to1
+
−  sndcp_data->su->sapi = PS_SAPI_11; 
+
−#else
+
−  sndcp_data->su->sapi = LL_SAPI_11; 
+
−#endif /*SNDCP_2to1*/
+
−  {
+
−    UBYTE sapi_index = 0;
+
−
+
−    for (sapi_index = 0; sapi_index < SNDCP_NUMBER_OF_SAPIS; sapi_index++) {
+
−      sndcp_data->su = & sndcp_data->su_base[sapi_index];
+
−      sndcp_data->su->n201_u = N201_U_DEFAULT;
+
−      sndcp_data->su->sn_unitdata_q_read = 0;
+
−      sndcp_data->su->sn_unitdata_q_write = 0;
+
−#ifdef _SNDCP_DTI_2_
+
−      sndcp_data->su->ll_unitdesc_q_read = 0;
+
−      sndcp_data->su->ll_unitdesc_q_write = 0;
+
−#else /* _SNDCP_DTI_2_ */
+
−      sndcp_data->su->ll_unitdata_q_read = 0;
+
−      sndcp_data->su->ll_unitdata_q_write = 0;
+
−#endif /* _SNDCP_DTI_2_ */
+
−      sndcp_data->su->cia_state = CIA_IDLE;
+
−    }
+
−  }
+
−
+
−  
+
−
+
−} /* su_init() */
+
−
+
−
+
−/*
+
−+------------------------------------------------------------------------------
+
−| Function    : su_next_sn_unitdata_req
+
−+------------------------------------------------------------------------------
+
−| Description : If queue with sn_unitdata_req is
+
−| not empty, send SIG_SU_CIA_DATA_REQ with next prim from sn_unitdata_req queue
+
−|
+
−| Parameters  : sapi
+
−| Pre         : cia_state == CIA_IDLE
+
−|
+
−+------------------------------------------------------------------------------
+
−*/
+
−GLOBAL void su_next_sn_unitdata_req (UBYTE sapi) 
+
−{ 
+
−  TRACE_FUNCTION( "su_next_sn_unitdata_req" );
+
−
+
−  if (sndcp_data->su->sn_unitdata_q_write !=
+
−      sndcp_data->su->sn_unitdata_q_read) {
+
−    /*
+
−     * Get sn_unitdata_req from queue.
+
−     */
+
−    T_SN_UNITDATA_REQ* sn_unitdata_req = 
+
−      sndcp_data->su->sn_unitdata_q[sndcp_data->su->sn_unitdata_q_read];
+
−    /*
+
−     * Get npdu_number from queue.
+
−     */
+
−    USHORT npdu_num = 
+
−      sndcp_data->su->npdu_number_q[sndcp_data->su->sn_unitdata_q_read];
+
−    UBYTE nsapi = sn_unitdata_req->nsapi;
+
−
+
−    sndcp_data->su->sn_unitdata_q[sndcp_data->su->sn_unitdata_q_read] = NULL;
+
−    sndcp_data->su->sn_unitdata_q_read = 
+
−      (sndcp_data->su->sn_unitdata_q_read + 1 ) % SN_UNITDATA_Q_LEN;
+
−
+
−    /*
+
−     * Cia is now busy. Send data.
+
−     */
+
−    sndcp_data->su->cia_state = CIA_BUSY;
+
−    sig_su_cia_cia_comp_req(sn_unitdata_req,
+
−                        npdu_num,
+
−                        nsapi,
+
−                        sapi);
+
−  }  else if (sndcp_data->su->cia_state == CIA_IDLE) {
+
−    UBYTE nsapi = 0;
+
−
+
−    for (nsapi = 0; nsapi < SNDCP_NUMBER_OF_NSAPIS; nsapi++) {
+
−      UBYTE used_sapi = 0;
+
−      BOOL used = FALSE;
+
−
+
−      sndcp_is_nsapi_used(nsapi, &used);
+
−      if (used) {
+
−        sndcp_get_nsapi_sapi(nsapi, &used_sapi);
+
−        if (used_sapi == sapi) {
+
−          sig_su_nu_ready_ind(nsapi);
+
−        }
+
−      }
+
−    }
+
−  }
+
−
+
−
+
−} /* su_next_sn_unitdata_req() */
+
−