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view src/cs/layer1/audio_cfile/l1audio_drive.c @ 220:0ed36de51973

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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 4e78acac3d88
children
line wrap: on
line source

/************* Revision Controle System Header *************
 *                  GSM Layer 1 software 
 * L1AUDIO_DRIVE.C
 *
 *        Filename l1audio_drive.c
 *  Copyright 2003 (C) Texas Instruments  
 *
 ************* Revision Controle System Header *************/

/************************************/
/* Include files...                 */
/************************************/

#include "l1_macro.h"
#include "l1_confg.h"

#if (AUDIO_TASK == 1)

  #include "l1_types.h"
  #include "sys_types.h"

  #if (CODE_VERSION == SIMULATION) && (AUDIO_SIMULATION)


    #include <stdlib.h>
    #include <string.h>
      
    #include "iq.h"             // Debug / Init hardware  ("eva3.lib")
    #include "l1_ver.h"
    #include "l1_const.h"
    #include "l1_signa.h"

    #if TESTMODE
      #include "l1tm_defty.h"
    #endif

    #include "l1audio_const.h"
    #include "l1audio_cust.h"
    #include "l1audio_defty.h"
    #include "l1audio_msgty.h"

    #if (L1_GTT == 1)
      #include "l1gtt_const.h"
      #include "l1gtt_defty.h"
    #endif
//added here from e-sample for AAC
    #if (L1_DYN_DSP_DWNLD == 1)
      #include "l1_dyn_dwl_const.h"
      #include "l1_dyn_dwl_defty.h"
    #endif
    #if (L1_MP3 == 1)
      #include "l1mp3_defty.h"
    #endif

    #if (L1_MIDI == 1)
      #include "l1midi_defty.h"
    #endif
//added here from e-sample for AAC
    #if (L1_AAC == 1)
      #include "l1aac_defty.h"
    #endif

    #include "l1_defty.h"
    #include "cust_os.h"
    #include "l1_msgty.h"
    #include "l1_varex.h"

    #include "l1_mftab.h"
    #include "l1_tabs.h"
    #include "l1_ctl.h"
       

    #include "l1_time.h"
    #include "l1_scen.h"

  #else
  // Layer1 and debug include files.

    #include <ctype.h>
    #include <math.h>
    #include "l1_ver.h"
    #include "l1_const.h"
    #include "l1_signa.h"

    #if TESTMODE
      #include "l1tm_defty.h"
    #endif
 
    #include "l1audio_const.h"
    #include "l1audio_cust.h"
    #include "l1audio_defty.h"
    #include "l1audio_msgty.h"

    #if (L1_GTT == 1)
      #include "l1gtt_const.h"
      #include "l1gtt_defty.h"
    #endif
//added here from e-sample for AAC
    #if (L1_DYN_DSP_DWNLD == 1)
      #include "l1_dyn_dwl_const.h"
      #include "l1_dyn_dwl_defty.h"
    #endif
    #if (L1_MP3 == 1)
      #include "l1mp3_defty.h"
    #endif

    #if (L1_MIDI == 1)
      #include "l1midi_defty.h"
    #endif
//added here from e-sample for AAC
    #if (L1_AAC == 1)
      #include "l1aac_defty.h"
    #endif

    #include "l1_defty.h"
    #include "cust_os.h"
    #include "l1_msgty.h"
    #include "tpudrv.h"       // TPU drivers.           ("eva3.lib")
    #include "l1_varex.h"

    #include "l1_proto.h"
    #include "l1_mftab.h"
    #include "l1_tabs.h"
    #include "mem.h"
    #include "armio.h"
    #include "timer.h"
    #include "timer1.h"
    #include "dma.h"
    #include "inth.h"
    #include "ulpd.h"
    #include "rhea_arm.h"
    #include "clkm.h"         // Clockm  ("eva3.lib")
    #include "l1_ctl.h"

    #include "l1_time.h"
    #if L2_L3_SIMUL
      #include "l1_scen.h"
    #endif
  #endif

  #include "l1audio_macro.h"

  /**************************************/
  /* Prototypes for L1 SYNCH manager    */
  /**************************************/
  void vocoder_mute_dl (BOOL mute);
  void vocoder_mute_ul (BOOL mute);
 #if (AUDIO_DSP_FEATURES == 1)
  void L1_audio_sidetone_write(UWORD16 sidetone_value);
  void L1_audio_CAL_DlVolume_write(UWORD16 vol_value);
  void L1_audio_CAL_UlVolume_write(UWORD16 vol_value);
  void L1_audio_volume_speed_write(UWORD16 volspeed_value);
 #endif

  /**************************************/
  /* External prototypes                */
  /**************************************/

  /*-------------------------------------------------------*/
  /* vocoder_mute_dl()                                     */
  /*-------------------------------------------------------*/
  /*                                                       */
  /* Parameters :                                          */
  /*                                                       */
  /* Return     :                                          */
  /*                                                       */
  /* Description : Mute the DL vocoder.                    */
  /*                                                       */
  /*-------------------------------------------------------*/
  void vocoder_mute_dl(BOOL mute)
  {
    if (mute)
    {
    // Set the DL vocoder mute bit in the d_tch_mode register
      l1s_dsp_com.dsp_ndb_ptr->d_tch_mode |= (0x01<<14);
    }
    else
    {
      // Reset the DL vocoder mute bit in the d_tch_mode register
      l1s_dsp_com.dsp_ndb_ptr->d_tch_mode &= ~(0x01<<14);
    }
  }

  /*-------------------------------------------------------*/
  /* vocoder_mute_ul()                                     */
  /*-------------------------------------------------------*/
  /*                                                       */
  /* Parameters :                                          */
  /*                                                       */
  /* Return     :                                          */
  /*                                                       */
  /* Description : Mute the UL vocoder.                    */
  /*                                                       */
  /*-------------------------------------------------------*/
  void vocoder_mute_ul(BOOL mute)
  {
    if (mute)
    {
    // Set the UL vocoder mute bit in the d_tch_mode register
      l1s_dsp_com.dsp_ndb_ptr->d_tch_mode |= (0x01<<15);
    }
    else
    {
      // Reset the UL vocoder mute bit in the d_tch_mode register
      l1s_dsp_com.dsp_ndb_ptr->d_tch_mode &= ~(0x01<<15);
    }
  } 

 #if (AUDIO_DSP_FEATURES == 1)
  /*-------------------------------------------------------*/
  /* L1_audio_sidetone_write()                             */
  /*-------------------------------------------------------*/
  /*                                                       */
  /* Parameters :                                          */
  /*                                                       */
  /* Return     :                                          */
  /*                                                       */
  /* Description : write sidetone gain in API for DSP      */
  /*               sidetone process                        */
  /*                                                       */
  /*-------------------------------------------------------*/
  void L1_audio_sidetone_write(UWORD16 sidetone_value)
  {
    l1s_dsp_com.dsp_ndb_ptr->d_sidetone_level = (API) sidetone_value;
  } 

  /*-------------------------------------------------------*/
  /* L1_audio_CAL_DlVolume_write()                         */
  /*-------------------------------------------------------*/
  /*                                                       */
  /* Parameters :                                          */
  /*                                                       */
  /* Return     :                                          */
  /*                                                       */
  /* Description : write DL gain in API for DSP vol ctrl   */
  /*               process                                 */
  /*                                                       */
  /*-------------------------------------------------------*/
  void L1_audio_CAL_DlVolume_write(UWORD16 vol_value)
  {
    l1s_dsp_com.dsp_ndb_ptr->d_vol_dl_level = (API) vol_value;
  } 

  /*-------------------------------------------------------*/
  /* L1_audio_CAL_UlVolume_write()                         */
  /*-------------------------------------------------------*/
  /*                                                       */
  /* Parameters :                                          */
  /*                                                       */
  /* Return     :                                          */
  /*                                                       */
  /* Description : write UL gain in API for DSP vol ctrl   */
  /*               process                                 */
  /*                                                       */
  /*-------------------------------------------------------*/
  void L1_audio_CAL_UlVolume_write(UWORD16 vol_value)
  {
    l1s_dsp_com.dsp_ndb_ptr->d_vol_ul_level = (API) vol_value;
  } 

  /*-------------------------------------------------------*/
  /* L1_audio_volume_speed_write()                         */
  /*-------------------------------------------------------*/
  /*                                                       */
  /* Parameters :                                          */
  /*                                                       */
  /* Return     :                                          */
  /*                                                       */
  /* Description : write volume speed in API for DSP vol   */
  /*               ctrl process                            */
  /*                                                       */
  /*-------------------------------------------------------*/
  void L1_audio_volume_speed_write(UWORD16 volspeed_value)
  {
    l1s_dsp_com.dsp_ndb_ptr->d_vol_speed = (API) volspeed_value;
  } 

 #endif /* DSP_AUDIO_FEAT */

#endif // AUDIO_TASK