view src/g23m-gprs/sndcp/sndcp_suaf.c @ 695:530f71d65c20

uartfax.c: pull from Tourmaline (GTM900 RI output) In addition to the primary intent of bringing in GTM900 RI output support, pulling uartfax.c wholesale from Tourmaline also changes the initial_time argument in the two NU_Create_Timer() calls from 0 to 1. This change is required for the new version of Nucleus used in Tourmaline and Selenite (and apparently also used by TI in LoCosto), and it is harmless (no effect) for the original TCS211 version of Nucleus used in Magnetite. The new philosophical model being adopted is that Tourmaline is our new development head firmware, whereas Magnetite will now be maintained similarly to how Linux maintainers treat stable kernels: changes will be backported from Tourmaline if they are deemed appropriate for stable modem firmware.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 24 Oct 2020 17:33:10 +0000
parents 219afcfc6250
children
line wrap: on
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/* 
+----------------------------------------------------------------------------- 
|  Project :  GPRS (8441)
|  Modul   :  sndcp_suaf.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 (SUA-statemachine)
+----------------------------------------------------------------------------- 
*/ 

 
#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_suaf.h"  /* to get this file  */
#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    : sua_get_nsapi
+------------------------------------------------------------------------------
| Description : find the affected nsapi in sn-PDU.
|
| Parameters  : ll_desc_req*
| Returns     : the nsapi
|
+------------------------------------------------------------------------------
*/
GLOBAL U8 sua_get_nsapi (T_LL_DESC_REQ* ll_desc_req) 
{ 
   T_desc3* desc3 = NULL;
   U8 * sndcp_header = NULL;

  /* Get the descriptor describing the memory area with the sndcp header */

  desc3 = (T_desc3*)ll_desc_req->desc_list3.first;
  sndcp_header = (U8*)desc3->buffer;

  TRACE_FUNCTION( "sua_get_nsapi" );

  return (*(sndcp_header + ENCODE_OFFSET_BYTE)) & 0xf;
} /* sua_get_nsapi() */
#else /* _SNDCP_DTI_2_ */
/*
+------------------------------------------------------------------------------
| Function    : sua_get_nsapi
+------------------------------------------------------------------------------
| Description : find the affected nsapi in sn-PDU.
|
| Parameters  : ll_data_req*
| Returns     : the nsapi
|
+------------------------------------------------------------------------------
*/
GLOBAL UBYTE sua_get_nsapi (T_LL_DATA_REQ* ll_data_req) 
{ 
  USHORT octet_offset = (ll_data_req->sdu.o_buf) >> 3;

  TRACE_FUNCTION( "sua_get_nsapi" );

  return ll_data_req->sdu.buf[octet_offset] & 0xf;

} /* sua_get_nsapi() */
#endif /* _SNDCP_DTI_2_ */
/*
+------------------------------------------------------------------------------
| Function    : sua_init
+------------------------------------------------------------------------------
| Description : The function sua_init()
|
| Parameters  : 
|
+------------------------------------------------------------------------------
*/
GLOBAL void sua_init (void)
{ 
  TRACE_FUNCTION( "sua_init" );

  /*
   * Not initialized:
   * Members of sn_data_q are not set to NULL.
   * Members of npdu_number_q are not set to 0.
   * Members of ll_desc_q are not set to NULL.
   * Members of ll_data_q are not set to NULL.
   */

  sndcp_data->sua = & sndcp_data->sua_base[0];
  INIT_STATE(SUA_0, SUA_LLC_NOT_RECEPTIVE);
#ifdef SNDCP_2to1
  sndcp_data->sua->sapi = PS_SAPI_3; 
#else
  sndcp_data->sua->sapi = LL_SAPI_3; 
#endif /*SNDCP_2to1*/
  sndcp_data->sua = & sndcp_data->sua_base[1];
  INIT_STATE(SUA_1, SUA_LLC_NOT_RECEPTIVE);
#ifdef SNDCP_2to1
  sndcp_data->sua->sapi = PS_SAPI_5; 
#else
  sndcp_data->sua->sapi = LL_SAPI_5; 
#endif /*SNDCP_2to1*/

  sndcp_data->sua = & sndcp_data->sua_base[2];
  INIT_STATE(SUA_2, SUA_LLC_NOT_RECEPTIVE);
#ifdef SNDCP_2to1
  sndcp_data->sua->sapi = PS_SAPI_9; 
#else
  sndcp_data->sua->sapi = LL_SAPI_9; 
#endif /*SNDCP_2to1*/

  sndcp_data->sua = & sndcp_data->sua_base[3];
  INIT_STATE(SUA_3, SUA_LLC_NOT_RECEPTIVE);
#ifdef SNDCP_2to1
  sndcp_data->sua->sapi = PS_SAPI_11; 
#else
  sndcp_data->sua->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->sua = & sndcp_data->sua_base[sapi_index];
      sndcp_data->sua->n201_i = N201_I_DEFAULT;
      sndcp_data->sua->sn_data_q_read = 0;
      sndcp_data->sua->sn_data_q_write = 0;
#ifdef _SNDCP_DTI_2_
      sndcp_data->sua->ll_desc_q_read = 0;
      sndcp_data->sua->ll_desc_q_write = 0;
#else /* _SNDCP_DTI_2_ */
      sndcp_data->sua->ll_data_q_read = 0;
      sndcp_data->sua->ll_data_q_write = 0;
#endif /* _SNDCP_DTI_2_ */
      sndcp_data->sua->first_seg_info = NULL;
      sndcp_data->sua->cia_state = CIA_IDLE;

    }
  }

} /* sua_init() */

 


/*
+------------------------------------------------------------------------------
| Function    : sua_mark_segment
+------------------------------------------------------------------------------
| Description : The function sua_mark_segment()
|
| Parameters  : N-PDU number, NSAPI, LL_DESC_REQ in which the reference has to be set.
| Pre         : The "correct" sua instance is activated and 
|               sndcp_data->sua->segment_number is the segment number of the
|               current segment.
|
+------------------------------------------------------------------------------
*/
GLOBAL void sua_mark_segment (UBYTE npdu_number,
                              UBYTE nsapi)
{ 
  T_SEG_INFO* seg_info = NULL;

  TRACE_FUNCTION( "sua_mark_segment" );

  /*
   * Add new seg_info to the list.
   */
  if (sndcp_data->sua->first_seg_info == NULL) {
    MALLOC(seg_info, sizeof(T_SEG_INFO));
    /*
     * The list has been empty.
     */
    sndcp_data->sua->first_seg_info = seg_info;
    /*
     * First segment.
     */
    seg_info->number_of_segments = 1;
    /*
     * Reset the confirm mask.
     */
    seg_info->cnf_segments = 0;
    seg_info->npdu_number = npdu_number;
    seg_info->next = NULL;
    seg_info->nsapi = nsapi;
  } else {
    /*
     * There are already some seg_infos. Find the seg_info for the given N-PDU.
     * number and NSAPI or create a new one.
     */
    /*
     * Are N-PDU number and NSAPI different?
     */
    BOOL different = TRUE;
    BOOL end = FALSE;
    T_SEG_INFO* help = sndcp_data->sua->first_seg_info;

    while(!end && different) {
      if (nsapi == help->nsapi && npdu_number == help->npdu_number) {
        different = FALSE;
      } else {
        if (help->next == NULL) {
          end = TRUE;
        } else {
          help = help->next;
        }
      }
    }
    if (different) {
      /*
       * A seg_info with same NSAPI and N-PDU number has not been found.
       * Create a new one.
       */
      MALLOC(seg_info, sizeof(T_SEG_INFO));
      /*
       * First segment.
       */
      seg_info->number_of_segments = 1;
      /*
       * Reset the confirm mask.
       */
      seg_info->cnf_segments = 0;
      seg_info->npdu_number = npdu_number;
      seg_info->next = NULL;
      seg_info->nsapi = nsapi;
      /*
       * Add the new seg_info to the list.
       */
      help->next = seg_info;
    } else {
      /*
       * A seg_info with same NSAPI and N-PDU number has been found.
       * Use this one.
       */
      help->number_of_segments++;
    }

  }
 
} /* sua_mark_segment() */


/*
+------------------------------------------------------------------------------
| Function    : sua_next_sn_data_req
+------------------------------------------------------------------------------
| Description : If queue with sn_data_req is
| not empty, send SIG_SUA_CIA_DATA_REQ with next prim from sn_data_req queue
|
| Parameters  : sapi
| Pre         : cia_state == CIA_IDLE
|
+------------------------------------------------------------------------------
*/
GLOBAL void sua_next_sn_data_req (UBYTE sapi) 
{ 
  TRACE_FUNCTION( "sua_next_sn_data_req" );

  if (sndcp_data->sua->sn_data_q_write !=
      sndcp_data->sua->sn_data_q_read) {
    /*
     * Get sn_data_req from queue.
     */
    T_SN_DATA_REQ* sn_data_req = 
      sndcp_data->sua->sn_data_q[sndcp_data->sua->sn_data_q_read];
    /*
     * Get npdu_number from queue.
     */
    UBYTE npdu_num = 
      sndcp_data->sua->npdu_number_q[sndcp_data->sua->sn_data_q_read];
    UBYTE nsapi = sn_data_req->nsapi;

    sndcp_data->sua->sn_data_q[sndcp_data->sua->sn_data_q_read] = NULL;
    sndcp_data->sua->sn_data_q_read = 
      (sndcp_data->sua->sn_data_q_read + 1) % SN_DATA_Q_LEN;

    /*
     * Cia is now busy. Send data.
     */
    sndcp_data->sua->cia_state = CIA_BUSY;
    sig_sua_cia_cia_comp_req(sn_data_req,
                         npdu_num,
                         nsapi,
                         sapi);
  } else if (sndcp_data->sua->cia_state == CIA_IDLE) {
    UBYTE nsapi = 0;

    for (nsapi = 0; nsapi < SNDCP_NUMBER_OF_NSAPIS; nsapi++) {
      UBYTE used_sapi = 0;
      BOOL used = FALSE;
      BOOL ack = FALSE;

      sndcp_is_nsapi_used(nsapi, &used);
      if (used) {
        sndcp_get_nsapi_sapi(nsapi, &used_sapi);
        sndcp_get_nsapi_ack(nsapi, &ack);
        if (used_sapi == sapi && ack) {
          sig_sua_nu_ready_ind(nsapi);
        }
      }
    }
  }

} /* sua_next_sn_data_req() */