view src/g23m-aci/aci/psa_t30p.c @ 220:0ed36de51973

ABB semaphore protection overhaul The ABB semaphone protection logic that came with TCS211 from TI was broken in several ways: * Some semaphore-protected functions were called from Application_Initialize() context. NU_Obtain_Semaphore() called with NU_SUSPEND fails with NU_INVALID_SUSPEND in this context, but the return value wasn't checked, and NU_Release_Semaphore() would be called unconditionally at the end. The latter call would increment the semaphore count past 1, making the semaphore no longer binary and thus no longer effective for resource protection. The fix is to check the return value from NU_Obtain_Semaphore() and skip the NU_Release_Semaphore() call if the semaphore wasn't properly obtained. * Some SPI hardware manipulation was being done before entering the semaphore- protected critical section. The fix is to reorder the code: first obtain the semaphore, then do everything else. * In the corner case of L1/DSP recovery, l1_abb_power_on() would call some non-semaphore-protected ABB & SPI init functions. The fix is to skip those calls in the case of recovery. * A few additional corner cases existed, all of which are fixed by making ABB semaphore protection 100% consistent for all ABB functions and code paths. There is still one remaining problem of priority inversion: suppose a low- priority task calls an ABB function, and some medium-priority task just happens to preempt right in the middle of that semaphore-protected ABB operation. Then the high-priority SPI task is locked out for a non-deterministic time until that medium-priority task finishes its work and goes back to sleep. This priority inversion problem remains outstanding for now.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 26 Apr 2021 20:55:25 +0000
parents fa8dc04885d8
children
line wrap: on
line source

/* 
+----------------------------------------------------------------------------- 
|  Project :  GSM-PS (6147)
|  Modul   :  PSA_T30P
+----------------------------------------------------------------------------- 
|  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 defines the processing functions for the
|             primitives send to the protocol stack adapter by T30.
+----------------------------------------------------------------------------- 
*/ 

#if defined (DTI) || defined (FF_FAX)

#ifndef PSA_T30P_C
#define PSA_T30P_C
#endif

#include "aci_all.h"

/*==== INCLUDES ===================================================*/
#include "aci_cmh.h"
#include "ati_cmd.h"
#include "aci_cmd.h"
#include "dti.h"      /* functionality of the dti library */

#include "dti_conn_mng.h"
#include "dti_cntrl_mng.h"

#include "aci_fd.h"
#include "aci_io.h"
#include "aci.h"
#include "psa.h"
#include "psa_t30.h"
#include "cmh.h"
#include "cmh_t30.h"

#include "aci_lst.h"
#include "psa_uart.h"
#include "cmh_uart.h"
#ifdef FF_PSI
#include "psa_psi.h"
#include "cmh_psi.h"
#include "ati_src_psi.h"
#endif /*FF_PSI*/

#include "psa_cc.h"

/*==== CONSTANTS ==================================================*/


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


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


/*==== VARIABLES ==================================================*/


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

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_activate_cnf    |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_ACTIVATE_CNF primitive send by T30.

*/

GLOBAL void psa_t30_activate_cnf
                              (T_T30_ACTIVATE_CNF *t30_activate_cnf)
{
  TRACE_FUNCTION ("psa_t30_activate_cnf()");

  if (!psaCC_ctbIsValid (t30ShrdPrm.cId))
  {
    TRACE_ERROR ("t30ShrdPrm.cId invalid");
    PFREE (t30_activate_cnf);
    return;
  }

  t30ShrdPrm.tbs = t30_activate_cnf->buf_size_tx;
  t30ShrdPrm.rbs = t30_activate_cnf->buf_size_rx;
  t30ShrdPrm.T30_is_activated = TRUE;

  PFREE (t30_activate_cnf);

  cmhT30_Activated( );
}

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_cap_ind         |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_CAP_IND primitive send by T30.

*/

GLOBAL void psa_t30_cap_ind (T_T30_CAP_IND *t30_cap_ind)
{
  TRACE_FUNCTION ("psa_t30_cap_ind()");

  if (!psaCC_ctbIsValid (t30ShrdPrm.cId))
  {
    TRACE_ERROR ("t30ShrdPrm.cId invalid");
    PFREE (t30_cap_ind);
    return;
  }

  memcpy (&t30ShrdPrm.hdlc_rcv, &t30_cap_ind->hdlc_info,
          sizeof (T_hdlc_info));

  PFREE (t30_cap_ind);

  cmhT30_CapRmtSite( );
}

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_dti_cnf         |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_DTI_CNF primitive sent by T30.

*/

GLOBAL void psa_t30_dti_cnf (T_T30_DTI_CNF *t30_dti_cnf)
{
  T_ACI_DTI_PRC *src_infos;
  T_DTI_CONN_LINK_ID link_id = dti_cntrl_get_link_id( DTI_ENTITY_T30, DTI_INSTANCE_NOTPRESENT, DTI_SUB_NO_NOTPRESENT );

  TRACE_FUNCTION ("psa_t30_dti_cnf()");


  switch( t30_dti_cnf->dti_conn )
  {
  case( T30_CONNECT_DTI ):
    /* by now, T30 is connected with UART. It should take care of
     * disactivating flow control */
    src_infos = find_element ( uart_src_params,
                               (UBYTE)t30EntStat.entOwn,
                               cmhUARTtest_srcId );
    if (src_infos EQ NULL)
    {
      TRACE_EVENT_P1("[ERR] psa_t30_dti_cnf: t30EntStat.entOwn=%d not found",
                     t30EntStat.entOwn) ;
      return ;
    }
    BITFIELD_CLEAR (src_infos->data_cntr, UART_DTI_FLOW_OFF);
    dti_cntrl_entity_connected( link_id, DTI_ENTITY_T30, DTI_OK );

    break;

  case( T30_DISCONNECT_DTI ):
    /* it depends here on the context:
    if network is disconnecting the call: */
    if (!psaCC_ctbIsValid (t30ShrdPrm.cId) OR
        (psaCC_ctb(t30ShrdPrm.cId)->calStat EQ CS_DSC_REQ))
    {
      dti_cntrl_entity_disconnected( link_id, DTI_ENTITY_T30 );
    }
    else /* other cases */
    {
      t30EntStat.isTempDisconnected = TRUE;
      dti_cntrl_entity_disconnected( link_id, DTI_ENTITY_T30 );
    }
    break;
  }

  PFREE (t30_dti_cnf);
}

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_dti_ind         |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_DTI_IND primitive sent by T30.

*/

GLOBAL void psa_t30_dti_ind (T_T30_DTI_IND *t30_dti_ind)
{
  TRACE_FUNCTION ("psa_t30_dti_ind()");

  PFREE (t30_dti_ind);
}

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_phase_ind       |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_PHASE_IND primitive sent by T30.

*/

GLOBAL void psa_t30_phase_ind (T_T30_PHASE_IND *t30_phase_ind)
{
#ifdef FF_PSI
  T_ACI_DTI_PRC_PSI *src_infos = find_element (psi_src_params, 
                            (UBYTE)t30EntStat.entOwn, cmhPSItest_srcId);
#endif /*FF_PSI*/
  TRACE_FUNCTION ("psa_t30_phase_ind()");

  if (!psaCC_ctbIsValid (t30ShrdPrm.cId))
  {
    TRACE_ERROR ("t30ShrdPrm.cId invalid");
    PFREE (t30_phase_ind);
    return;
  }

  switch ( t30_phase_ind->phase )
  {
    case MSG_PHASE:
      /* send connect message with flow control */

      R_AT( RAT_CONNECT, t30EntStat.entOwn )
        ( t30EntStat.curCmd, cmhT30_GetDataRate(), t30ShrdPrm.cId+1, TRUE );
      if (IS_SRC_BT(t30EntStat.entOwn))
      {
        T_DTI_ENTITY_ID entity_list[] = {DTI_ENTITY_BLUETOOTH, DTI_ENTITY_T30};
        dti_cntrl_est_dpath((UBYTE)t30EntStat.entOwn, entity_list, 2, SPLIT, T30_connect_dti_cb);
      }
      else
      {
        T_DTI_ENTITY_ID entity_list[] = {DTI_ENTITY_T30};
        dti_cntrl_est_dpath_indirect ( (UBYTE)t30EntStat.entOwn,
                                       entity_list,
                                       1,
                                       SPLIT,
                                       T30_connect_dti_cb,
                                       DTI_CPBLTY_SER,
                                       DTI_CID_NOTPRESENT);
      }
      break;

    case BCS_PHASE:
      {
        T_DTI_ENTITY_ID entity_list[] = {DTI_ENTITY_ACI};
#ifdef FF_PSI
        if (src_infos NEQ NULL)
          dti_cntrl_est_dpath_indirect ( (UBYTE)t30EntStat.entOwn,
                                       entity_list,
                                       1,
                                       SPLIT,
                                       atiPSI_dti_cb,
                                       DTI_CPBLTY_CMD,
                                       DTI_CID_NOTPRESENT);
        else 
#endif /*FF_PSI*/
          dti_cntrl_est_dpath_indirect ( (UBYTE)t30EntStat.entOwn,
                                       entity_list,
                                       1,
                                       SPLIT,
                                       atiUART_dti_cb,
                                       DTI_CPBLTY_CMD,
                                       DTI_CID_NOTPRESENT);
      }
      break;

    default:
      break;
  }
  PFREE (t30_phase_ind);
}

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_cmpl_ind        |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_CMPL_IND primitive send by T30.

*/

GLOBAL void psa_t30_cmpl_ind (T_T30_CMPL_IND *t30_cmpl_ind)
{
  UBYTE cmpl;

  TRACE_FUNCTION ("psa_t30_cmpl_ind()");

  cmpl = t30_cmpl_ind->cmpl;

  PFREE (t30_cmpl_ind);

  if (!psaCC_ctbIsValid (t30ShrdPrm.cId))
  {
    TRACE_ERROR ("t30ShrdPrm.cId invalid");
    return;
  }

  switch (cmpl)
  {
    case CMPL_DCN:
    {
      cmhT30_Disconnected( );
      break;
    }

    case CMPL_EOM:
    {
      cmhT30_NextDoc( );
      break;
    }

    case CMPL_EOP:
    {
      cmhT30_TransCmpl( );
      break;
    }

    case CMPL_PI:
    {
      cmhT30_ProcIntInst( );
      break;
    }

    default:
    {
      break;
    }
  }
}

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_deactivate_cnf  |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_DEACTIVATE_CNF primitive send by T30.

*/

GLOBAL void psa_t30_deactivate_cnf
                           (T_T30_DEACTIVATE_CNF *t30_deactivate_cnf)
{
  TRACE_FUNCTION ("psa_t30_deactivate_cnf()");

  PFREE (t30_deactivate_cnf);

  cmhT30_Deactivated( );
}

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_eol_ind         |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_EOL_IND primitive send by T30.

*/

GLOBAL void psa_t30_eol_ind (T_T30_EOL_IND *t30_eol_ind)
{
  TRACE_FUNCTION ("psa_t30_eol_ind()");

  t30ShrdPrm.eol = t30_eol_ind->eol;

  PFREE (t30_eol_ind);
}

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_error_ind       |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_ERROR_IND primitive send by T30.

*/

GLOBAL void psa_t30_error_ind (T_T30_ERROR_IND *t30_error_ind)
{
  T_DTI_CONN_LINK_ID link_id = dti_cntrl_get_link_id( DTI_ENTITY_T30, DTI_INSTANCE_NOTPRESENT, DTI_SUB_NO_NOTPRESENT );

  TRACE_FUNCTION ("psa_t30_error_ind()");

  if (!psaCC_ctbIsValid (t30ShrdPrm.cId))
  {
    TRACE_ERROR ("t30ShrdPrm.cId invalid");
    PFREE (t30_error_ind);
    return;
  }

  t30ShrdPrm.err_cause = t30_error_ind->cause;

  PFREE (t30_error_ind);

  /* tell dti_mng that an error occured: not connected anymore */
  dti_cntrl_entity_disconnected( link_id, DTI_ENTITY_T30 );

  cmhT30_Failure();
}

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_preamble_ind    |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_PREAMBLE_IND primitive send by T30.

*/

GLOBAL void psa_t30_preamble_ind
                               (T_T30_PREAMBLE_IND *t30_preamble_ind)
{
  TRACE_FUNCTION ("psa_t30_preamble_ind()");

  PFREE (t30_preamble_ind);

  cmhT30_PreambleRcvd( );
}


/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_report_ind      |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_REPORT_IND primitive send by T30.

*/

GLOBAL void psa_t30_report_ind (T_T30_REPORT_IND *t30_report_ind)
{
  TRACE_FUNCTION ("psa_t30_report_ind()");

  t30ShrdPrm.report.dir   = t30_report_ind->dir;
  t30ShrdPrm.report.l_buf = t30_report_ind->sdu.l_buf;

  memcpy (t30ShrdPrm.report.buf,
          t30_report_ind->sdu.buf,
          t30_report_ind->sdu.l_buf >> 3);

  PFREE (t30_report_ind);

  cmhT30_HDLCRpt( );
}

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : PSA_T30                 |
|                                 ROUTINE : psa_t30_sgn_ind         |
+-------------------------------------------------------------------+

  PURPOSE : processes the T30_SGN_IND primitive send by T30.

*/

GLOBAL void psa_t30_sgn_ind (T_T30_SGN_IND *t30_sgn_ind)
{
  TRACE_FUNCTION ("psa_t30_sgn_ind()");

  if (!psaCC_ctbIsValid (t30ShrdPrm.cId))
  {
    TRACE_ERROR ("t30ShrdPrm.cId invalid");
    PFREE (t30_sgn_ind);
    return;
  }

  t30ShrdPrm.sgn_snd = t30_sgn_ind->sgn;

  PFREE (t30_sgn_ind);

  switch (t30ShrdPrm.sgn_snd)
  {
    case SGN_CRP:
    case SGN_FCS_ERR:
    case SGN_NO_RES:
    {
      psaT30_Capabilities();
      break;
    }

    case SGN_FTT:
    {
      cmhT30_FTT( );
      break ;
    }

    case SGN_DCN:
    {
      cmhT30_Disconnect( );
      break;
    }

    case SGN_EOM:
    {
      cmhT30_DocReceived( );
      break;
    }

    case SGN_EOP:
    {
      switch (t30ShrdPrm.faxStat)
      {
        case FS_RCV_DOC:
          cmhT30_ProcEnd( );
          break;
        case FS_SND_DOC:
          ppmPendFlg = TRUE;
          if( psaT30_Ppm() < 0 )  /* T30 PPM request */
          {
            TRACE_EVENT( "FATAL RETURN psaT30 in cmhT30_PPMRcvd" );
          }
          ppmPendFlg = FALSE;
          t30ShrdPrm.sgn_snd = SGN_NOT_USED;
          break;
        default:
          TRACE_FUNCTION ("psa_t30_sgn_ind() - SGN_EOP ERROR");
          break;
      }
      break;
    }

    case SGN_MPS:
    {
      switch (t30ShrdPrm.faxStat)
      {
        case FS_RCV_DOC:
          cmhT30_PageReceived( );
          break;
        case FS_SND_DOC:
          pageSentFlg = TRUE;
          ppmPendFlg = TRUE;
          if( psaT30_Ppm() < 0 )  /* T30 PPM request */
          {
            TRACE_EVENT( "FATAL RETURN psaT30 in cmhT30_PPMRcvd" );
          }
          ppmPendFlg = FALSE;
          t30ShrdPrm.sgn_snd = SGN_NOT_USED;
          cmhT30_NextPage( );
          break;
        default:
          TRACE_FUNCTION ("psa_t30_sgn_ind() - SGN_MPS ERROR");
          break;
      }
      break;
    }

    case SGN_PIP:
    {
      cmhT30_ProcInt( );
      break;
    }

    case SGN_PIN:
    {
      cmhT30_ProcInt( );
      break;
    }

    case SGN_PRI_EOM:
    {
      cmhT30_DocReceivedPRI( );
      break;
    }

    case SGN_PRI_EOP:
    {
      cmhT30_ProcEndPRI( );
      break;
    }

    case SGN_PRI_MPS:
    {
      cmhT30_PageReceivedPRI( );
      break;
    }

    case SGN_RTN:
    {
      cmhT30_RTN();
      break;
    }

    case SGN_RTP:
    {
      cmhT30_RTP();
      break;
    }

    case SGN_NOT_USED:
    default:
    {
      break;
    }
  }
}
#endif /* DTI OR FF_FAX */

/*==== EOF =========================================================*/