view src/g23m-fad/fad/fad_rcvs.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
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/* 
+----------------------------------------------------------------------------- 
|  Project :  GSM-F&D (8411)
|  Modul   :  FAD_RCVS
+----------------------------------------------------------------------------- 
|  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 defines the functions for processing
|             of incomming signals for the component
|             Fax Adaptation 3.45 of the mobile station
+----------------------------------------------------------------------------- 
*/ 

#ifndef FAD_RCVS_C
#define FAD_RCVS_C
#endif

#define ENTITY_FAD

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

#include <string.h>
#include "typedefs.h"
#include "vsi.h"
#include "macdef.h"
#include "pconst.cdg"
#include "custom.h"
#include "gsm.h"
#include "cnf_fad.h"
#include "mon_fad.h"
#include "prim.h"
#include "pei.h"
#include "tok.h"
#include "ccdapi.h"
#include "fad.h"

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

/*==== TYPES =======================================================*/

/*==== VAR EXPORT ==================================================*/

/*==== VAR LOCAL ===================================================*/

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

/*
+-------------------------------------------------------------------------+
| PROJECT : GSM-F&D (8411)             MODULE  : FAD_RCVS                 |
| STATE   : code                       ROUTINE : sig_ker_rcv_await_tcf_req|
+-------------------------------------------------------------------------+

  PURPOSE : Process signal AWAIT_TCF_REQ received from KERNEL process

*/

GLOBAL void sig_ker_rcv_await_tcf_req (void)
{
  TRACE_FUNCTION ("sig_ker_rcv_await_tcf_req()");

  if (GET_STATE (RCV) EQ SYNC_RCV)
  {
    fad_data->rcv.bytes_expect = snd_DurationToBytes(fad_data->snd.trans_rate, TIME_AWAIT_TCF);
    SET_STATE (RCVSUB, SUB_IDLE);
    SET_STATE (RCV, TCF_RCV);
  }
}

/*
+-------------------------------------------------------------------------+
| PROJECT : GSM-F&D (8411)             MODULE  : FAD_RCVS                 |
| STATE   : code                       ROUTINE : sig_ker_rcv_ready_req    |
+-------------------------------------------------------------------------+

  PURPOSE : Process signal READY_REQ received from KERNEL process

*/

GLOBAL void sig_ker_rcv_ready_req (void)
{
  T_RCV *rcv = &fad_data->rcv;
  T_FAD_DATA_IND *fad_data_ind;

  TRACE_FUNCTION ("sig_ker_rcv_ready_req()");

  rcv->t30_req_frames = TRUE;
  if (rcv->prim_ready OR !rcv->data_incoming)
  {
    if (rcv_GetMsgData (&fad_data_ind, rcv->data_incoming))
    {
      if (fad_data_ind->final)
      {
        if (rcv->data_incoming) /* data incoming - buffer empty */
        {                               
          sig_rcv_ker_error_ind (ERR_EMPTY_BUFFER);
          rcv->t30_req_frames = FALSE;
          rcv_ResetFormatter ();
          SET_STATE (RCV, SYNC_RCV);    
          return;
        }
        else
        {
          rcv_ResetFormatter ();
          SET_STATE (RCV, SYNC_RCV);
        }
      }
      sig_rcv_ker_msg_ind (fad_data_ind);
      rcv->t30_req_frames = FALSE;

      if (rcv->preamble_pending AND !rcv->data_in_rbm)
      {
        /* TRACE_EVENT ("pend FAD_MUX_IND to T30"); */
        sig_rcv_ker_preamble_ind (); /**/
      }
      if (rcv->bcs_pending AND !rcv->data_in_rbm)
      {
        /* TRACE_EVENT ("pend FAD_DATA_IND (BCS) to T30"); */
        sig_rcv_ker_bcs_ind (rcv->hdlc, rcv->hdlc_len);
      }
    }
  }
}

/*
+-------------------------------------------------------------------------+
| PROJECT : GSM-F&D (8411)             MODULE  : FAD_RCVS                 |
| STATE   : code                       ROUTINE : sig_ker_rcv_reset_req    |
+-------------------------------------------------------------------------+

  PURPOSE : Process signal AWAIT_REQ received from KERNEL process

*/

GLOBAL void sig_ker_rcv_reset_req (void)
{

  TRACE_FUNCTION ("sig_ker_rcv_reset_req()");

  rcv_ResetFormatter ();
  SET_STATE (RCV, SYNC_RCV);

}