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view src/gpf/frame/prf_func.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

/* 
+------------------------------------------------------------------------------
|  File:       prf_func.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 defines the profiler interface functions.
+----------------------------------------------------------------------------- 
*/ 



#ifndef __PRF_FUNC_C__
#define __PRF_FUNC_C__
#endif

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

#include "typedefs.h"
#include "glob_defs.h"
#include "vsi.h"
#include "os.h"
#include "prf_func.h"
#include "string.h"

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


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


/*==== EXTERNALS ==================================================*/

extern ULONG TraceMask[];
extern T_HANDLE e_running[];

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

#ifndef RUN_INT_RAM
 T_PROFILER_FUNC prf_func; 
#else
 extern T_PROFILER_FUNC prf_func; 
 extern void prf_register ( T_PROFILER_FUNC * func );
#endif 
  
/*==== LINT =======================================================*/


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

#ifndef RUN_INT_RAM
/*
+------------------------------------------------------------------------------
|  Function     :  prf_init
+------------------------------------------------------------------------------
|  Description  :  initialize profiler API function pointer table.
|
|  Parameters   :  void
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void prf_init ( void )
{
  if ( prf_func.magic_nr != PRF_INITIALIZED )
  {
    memset ( &prf_func, 0, sizeof ( T_PROFILER_FUNC ) );
  }
}
#endif


#ifndef RUN_INT_RAM
/*
+------------------------------------------------------------------------------
|  Function     :  prf_register
+------------------------------------------------------------------------------
|  Description  :  register the profiler API functions.
|
|  Parameters   :  func - pointer to API function pointer table
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void prf_register ( T_PROFILER_FUNC * func )
{
  prf_func.log_entity_create      = func->log_entity_create;
  prf_func.log_entity_delete      = func->log_entity_delete;
  prf_func.log_entity_activate    = func->log_entity_activate;
  prf_func.log_function_entry     = func->log_function_entry;
  prf_func.log_function_exit      = func->log_function_exit;
  prf_func.log_point_of_interest  = func->log_point_of_interest;
  prf_func.magic_nr = PRF_INITIALIZED;
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_entity_create
+------------------------------------------------------------------------------
|  Description  :  log entity create
|
|  Parameters   :  entity - unique entity indentifier
|                  name   - entity name
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void prf_log_entity_create ( void * entity, const char * name )
{
  if ( prf_func.log_entity_create != NULL )
  {
    prf_func.log_entity_create ( entity, name );
  }
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_entity_delete
+------------------------------------------------------------------------------
|  Description  :  log entity delete
|
|  Parameters   :  entity - unique entity indentifier
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void prf_log_entity_delete ( void * entity )
{
  if ( prf_func.log_entity_delete != NULL )
  {
    prf_func.log_entity_delete ( entity );
  }
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_entity_activate
+------------------------------------------------------------------------------
|  Description  :  log entity activate
|
|  Parameters   :  entity - unique entity indentifier
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void prf_log_entity_activate ( void * entity )
{
  if ( prf_func.log_entity_activate != NULL )
  {
    prf_func.log_entity_activate ( entity );
  }
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_function_entry
+------------------------------------------------------------------------------
|  Description  :  log function entry
|
|  Parameters   :  function - unique function indentifier
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void prf_log_function_entry ( void * function )
{
T_HANDLE caller;

  caller = e_running [ os_MyHandle() ];
  if ( TraceMask [ caller ] & TC_PROFILER )
  {
    if ( prf_func.log_function_entry != NULL )
    {
      prf_func.log_function_entry ( function );
    }
  }
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_function_exit
+------------------------------------------------------------------------------
|  Description  :  log function exit
|
|  Parameters   :  function - unique function indentifier
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void prf_log_function_exit ( void * function )
{
T_HANDLE caller;

  caller = e_running [ os_MyHandle() ];
  if ( TraceMask [ caller ] & TC_PROFILER )
  {
    if ( prf_func.log_function_exit != NULL )
    {
      prf_func.log_function_exit ( function );
    }
  }
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_point_of_interest
+------------------------------------------------------------------------------
|  Description  :  log point of interest
|
|  Parameters   :  poi - unique function indentifier
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void prf_log_point_of_interest ( const char * poi )
{
T_HANDLE caller;

  caller = e_running [ os_MyHandle() ];
  if ( TraceMask [ caller ] & TC_PROFILER )
  {
    if ( prf_func.log_point_of_interest != NULL )
    {
      prf_func.log_point_of_interest ( poi );
    }
  }
}
#endif

//#define TEST_PROFILER_API
#ifdef TEST_PROFILER_API

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_register
+------------------------------------------------------------------------------
|  Description  :  register the profiler API functions.
|
|  Parameters   :  func - pointer to API function pointer table
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void log_entity_create ( void * entity, const char * name )
{
  vsi_o_ttrace ( e_running[os_MyHandle()], TC_SYSTEM, "PRF: Create entity %s, id=%d", name, entity );
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_entity_delete
+------------------------------------------------------------------------------
|  Description  :  log entity delete
|
|  Parameters   :  entity - unique entity indentifier
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void log_entity_delete ( void * entity )
{
  vsi_o_ttrace ( e_running[os_MyHandle()], TC_SYSTEM, "PRF: Delete entity id=%d", entity );
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_entity_activate
+------------------------------------------------------------------------------
|  Description  :  log entity activate
|
|  Parameters   :  entity - unique entity indentifier
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void log_entity_activate ( void * entity )
{
T_HANDLE caller;
extern T_HANDLE TST_Handle;

  caller = e_running[os_MyHandle()];
  if ( caller != TST_Handle )
    vsi_o_ttrace ( caller, TC_SYSTEM, "PRF: Activate entity %d", entity );
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_function_entry
+------------------------------------------------------------------------------
|  Description  :  log function entry
|
|  Parameters   :  function - unique function indentifier
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void log_function_entry ( void * function )
{
  vsi_o_ttrace ( e_running[os_MyHandle()], TC_SYSTEM, "PRF: Function entry %s", function );
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_function_exit
+------------------------------------------------------------------------------
|  Description  :  log function exit
|
|  Parameters   :  function - unique function indentifier
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void log_function_exit ( void * function )
{
  vsi_o_ttrace ( e_running[os_MyHandle()], TC_SYSTEM, "PRF: Function exit %s", function );
}
#endif

#ifndef RUN_FLASH
/*
+------------------------------------------------------------------------------
|  Function     :  prf_log_point_of_interest
+------------------------------------------------------------------------------
|  Description  :  log point of interest
|
|  Parameters   :  poi - unique function indentifier
|
|  Return       :  void
+------------------------------------------------------------------------------
*/
void log_point_of_interest ( const char * poi )
{
  vsi_o_ttrace ( e_running[os_MyHandle()], TC_SYSTEM, "PRF: POI %s", poi );
}
#endif

#ifndef RUN_FLASH
T_PROFILER_FUNC profiler_functions =
{
PRF_INITIALIZED,
log_entity_create,
log_entity_delete,
log_entity_activate,
log_function_entry,
log_function_exit,
log_point_of_interest,
};
#endif

#endif /* TEST_PROFILER_API */