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view src/gpf/ccd/hl_flag.c @ 303:f76436d19a7a default tip

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!GPRS config: fix long-standing AT+COPS chance hanging bug There has been a long-standing bug in FreeCalypso going back years: sometimes in the AT command bring-up sequence of an ACI-only MS, the AT+COPS command would produce only a power scan followed by cessation of protocol stack activity (only L1 ADC traces), instead of the expected network search sequence. This behaviour was seen in different FC firmware versions going back to Citrine, and seemed to follow some law of chance, not reliably repeatable. This bug has been tracked down and found to be specific to !GPRS configuration, stemming from our TCS2/TCS3 hybrid and reconstruction of !GPRS support that was bitrotten in TCS3.2/LoCosto version. ACI module psa_mms.c, needed only for !GPRS, was missing in the TCS3 version and had to be pulled from TCS2 - but as it turns out, there is a new field in the MMR_REG_REQ primitive that needs to be set correctly, and that psa_mms.c module is the place where this initialization needed to be added.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 08 Jun 2023 08:23:37 +0000
parents 4e78acac3d88
children
line wrap: on
line source

/* 
+----------------------------------------------------------------------------- 
|  Project :  
|  Modul   : hl_flag.c
+----------------------------------------------------------------------------- 
|  Copyright 2002 Texas Instruments Inc. 
|                 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 :  Definition of encoding and decoding functions for HL_FLAG elements 
+----------------------------------------------------------------------------- 
*/ 


/*
 * standard definitions like GLOBAL, UCHAR, ERROR etc.
 */
#include "typedefs.h"
#include "header.h"

/*
 * Prototypes of ccd (USE_DRIVER EQ undef) for prototypes only
 * look at ccdapi.h
 */
#undef USE_DRIVER
#include "ccdapi.h"

/*
 * Types and functions for bit access and manipulation
 */
#include "ccd_globs.h"
#include "bitfun.h"

/*
 * Prototypes of ccd internal functions
 */
#include "ccd.h"

/*
 * Declaration of coder/decoder tables
 */
#include "ccdtable.h"
#include "ccddata.h"


#ifndef RUN_INT_RAM
/*
+--------------------------------------------------------------------+
| PROJECT : CCD (6144)               MODULE  : CDC_GSM               |
| STATE   : code                     ROUTINE : cdc_hl_flag_decode    |
+--------------------------------------------------------------------+

  PURPOSE : Decoding of the GSM Type HL_FLAG element. This element
            consists of a single bit only. The decoded value will be 0
            if the encoded value is L respectively 1 if the encoded
            value is H.
            
*/

SHORT cdc_hl_flag_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
{
  ULONG repeat, max_rep;
  BOOL  is_variable = FALSE;
  ULONG cix_ref, num_prolog_steps, prolog_step_ref;

#ifdef DEBUG_CCD
  #ifndef CCD_SYMBOLS
  TRACE_CCD (globs, "cdc_hl_flag_decode()");
  #else
  TRACE_CCD (globs, "cdc_hl_flag_decode() %s", ccddata_get_alias((USHORT) e_ref, 1));
  #endif
#endif

  globs->SeekTLVExt = FALSE;
  cix_ref = melem[e_ref].calcIdxRef;
  num_prolog_steps = calcidx[cix_ref].numPrologSteps;
  prolog_step_ref  = calcidx[cix_ref].prologStepRef;
  repeat     = 1;
  
  if (cix_ref != 0)
  {
    /*
     * if this element is conditional, check the condition
     */
    if (calcidx[cix_ref].numCondCalcs NEQ 0
    AND ! ccd_conditionOK (e_ref, globs))
      return 1;

    /*
     * if this element have a defined Prolog
     * we have to process it before decoding the bitstream
     */
    if (num_prolog_steps)
    {
      ccd_performOperations (num_prolog_steps, prolog_step_ref, globs);
    }
    if (melem[e_ref].repType NEQ ' ')
    {
      is_variable = ccd_calculateRep (e_ref, &repeat, &max_rep, globs);
    }
  }
    /*
     * Element is not a SPARE. Setup the struct pointer
     */
    globs->pstructOffs = melem[e_ref].structOffs;

      
      if (melem[e_ref].optional)
      {
        /*
         * for optional elements we must set the valid-flag
         * ??.
         * Therefore we store the address of the valid flag.
         */
        *(globs->pstruct + globs->pstructOffs++) = TRUE;

      }

  globs->pstruct[globs->pstructOffs++] = (UBYTE) (bf_readBit(globs) == GET_HL_PREV(1));
#ifdef DEBUG_CCD
#ifdef CCD_SYMBOLS
  TRACE_CCD (globs, "decoding var %s",ccddata_get_alias((USHORT) e_ref, 1));
#else
  TRACE_CCD (globs, "decoding var %d", melem[e_ref].elemRef);
#endif
#endif

  return 1;
}
#endif /* !RUN_INT_RAM */

#ifndef RUN_INT_RAM
/*
+--------------------------------------------------------------------+
| PROJECT : CCD (6144)              MODULE  : CDC_GSM                |
| STATE   : code                    ROUTINE : cdc_hl_flag_encode     |
+--------------------------------------------------------------------+

  PURPOSE : Encoding of the GSM Type HL_FLAG element. This element
            consists of a single bit only. If the element is set to 1
            a H bit will be coded. Otherwise a L bit will be coded if 
            the element value to encode is set to 0.

*/

SHORT cdc_hl_flag_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
{
  ULONG  repeat=1, amount=1;
  USHORT cSize = 0, startOffset;
  ULONG  i;
  ULONG  cix_ref, num_prolog_steps, prolog_step_ref;

#ifdef DEBUG_CCD
  #ifndef CCD_SYMBOLS
  TRACE_CCD (globs, "cdc_hl_flag_encode()");
  #else
  TRACE_CCD (globs, "cdc_hl_flag_encode() %s", ccddata_get_alias((USHORT) e_ref, 1));
  #endif
#endif

  cix_ref = melem[e_ref].calcIdxRef;
  num_prolog_steps = calcidx[cix_ref].numPrologSteps;
  prolog_step_ref  = calcidx[cix_ref].prologStepRef;

  if (cix_ref != 0)
  {
    /*
     * if this element is conditional, check the condition
     */
    if (calcidx[cix_ref].numCondCalcs NEQ 0
    AND ! ccd_conditionOK (e_ref, globs))
      return 1;

    /*
     * if this element have a defined Prolog
     * we have to process it before decoding the bitstream
     */
    if (num_prolog_steps)
    {
      ccd_performOperations (num_prolog_steps, prolog_step_ref, globs);
    }
  }

  if (melem[e_ref].elemType NEQ 'S')
  {
    /*
     * Element is not a SPARE.
     * Setup the offset into the C-structure for this element
     */
    globs->pstructOffs = melem[e_ref].structOffs;

    if (melem[e_ref].optional)
    {
      /*
       * for optional elements check the valid-flag in the C-struct.
       * Spare elements does not have a corresponding valid flag.
       */
      if (globs->pstruct[globs->pstructOffs++] == FALSE)
      {
        /*
         * element is invalid so we must code a 0 bit
         */
        bf_writeBit (GET_HL(0), globs);

        return 1;
      }
      
      else
      {
#ifdef DEBUG_CCD
        if (globs->pstruct [melem[e_ref].structOffs] != TRUE)
        {
          TRACE_CCD (globs, "Ambiguous value for valid flag!\n...assumed 1 for ccdID=%d",
                     e_ref);
        }
#endif
        /*
         * element is valid so we must code a 1 bit
         */
        bf_writeBit (GET_HL(1), globs);
      }
    }

    if (melem[e_ref].repType NEQ ' ')
    {
      /* As a default amount =1 due to initialization. */
      if (melem[e_ref].repType EQ 'i')
      {
        /*
         * for variable repeatable elements read the amount
         * of repeats out of the C-Structure (c_xxx).
         * If the number of repeats given by the C-Structure 
         * exceeds the allowed value CCD gives a warning!
         */
        if (melem[e_ref].maxRepeat > 255)
        {
          ULONG count = (ULONG) (* (USHORT *)(globs->pstruct + globs->pstructOffs++));
          repeat = MINIMUM (count, (ULONG) melem[e_ref].maxRepeat);
          if (repeat < count) 
            ccd_recordFault (globs, ERR_MAX_REPEAT, CONTINUE, 
                             (USHORT) e_ref, globs->pstruct + globs->pstructOffs);
        }
        else
        {
          repeat = (ULONG) MINIMUM (globs->pstruct[globs->pstructOffs], 
                                    melem[e_ref].maxRepeat);
          if ( repeat < (ULONG)(globs->pstruct[globs->pstructOffs]) ) 
            ccd_recordFault (globs, ERR_MAX_REPEAT, CONTINUE, 
                             (USHORT) e_ref, globs->pstruct + globs->pstructOffs);
        }
        globs->pstructOffs++;
      }
      else
      if (melem[e_ref].repType EQ 'v')
      {
        /*
         * for variable repeatable elements read the amount
         * of repeats out of the C-Structure (c_xxx).
         * If the number of repetitions given by the C-Structure 
         * exceeds the allowed value (maxRepeat) CCD gives a warning!
         */
        if (melem[e_ref].maxRepeat > 255)
        {
          ULONG count = (ULONG) (* (USHORT *)(globs->pstruct + globs->pstructOffs++));
          amount = MINIMUM (count, (ULONG) melem[e_ref].maxRepeat);
          if (amount < count) 
            ccd_recordFault (globs, ERR_MAX_REPEAT, CONTINUE, 
                             (USHORT) e_ref, globs->pstruct + globs->pstructOffs);
        }
        else
        {
          amount = (ULONG) MINIMUM (globs->pstruct[globs->pstructOffs], 
                                    melem[e_ref].maxRepeat);
          if ( amount < (ULONG) (globs->pstruct[globs->pstructOffs]) )
            ccd_recordFault (globs, ERR_MAX_REPEAT, CONTINUE, 
                             (USHORT) e_ref, globs->pstruct + globs->pstructOffs);
        }
        globs->pstructOffs++;
      }
      else
      if (melem[e_ref].repType EQ 'c')
      {
        amount = (ULONG) melem[e_ref].maxRepeat;
      }

      if (melem[e_ref].repType EQ 'v' OR melem[e_ref].repType EQ 'i')
      {
        cSize = (USHORT)(((melem[e_ref].elemType EQ 'V')
                         ? mvar[melem[e_ref].elemRef].cSize
                         : mcomp[melem[e_ref].elemRef].cSize
                        ));
        startOffset = (USHORT) globs->pstructOffs;
      }
    }
  
    for (i=0; i < repeat; i++)
    {
      if (cSize)
      {
        /*
         * calculate the offset if it is an array
         */
        globs->pstructOffs = (USHORT)(startOffset + (i * cSize));
      }
      /*
       * encode the value
       */
      if (globs->pstruct[globs->pstructOffs++] EQ FALSE)
      {
        /*
         * element is 0 so we must signalize L
         */
        bf_writeBit (GET_HL(0), globs);
      }
      else
      {
        /*
         * element is 1 so we must signalize H
         */
        bf_writeBit (GET_HL(1), globs);
      }
      
      globs->pstructOffs += mvar[melem[e_ref].elemRef].cSize;
    }

    if (melem[e_ref].repType EQ 'i')
    {
      /*
       * for variable CNS1 fields we code a 0 flag to mark the end of the
       * arrays
       */
      bf_writeBit (GET_HL(0), globs);
    }
  }

  return 1;
}
#endif /* !RUN_INT_RAM */