view src/gpf/inc/stddefs.h @ 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 4e78acac3d88
children
line wrap: on
line source

/* 
+------------------------------------------------------------------------------
|  File:       stddefs.h
+------------------------------------------------------------------------------
|  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 :  Old frame standard definitions.
+----------------------------------------------------------------------------- 
*/ 


#ifndef __STDDEFS_H__
#define __STDDEFS_H__

#ifndef OLD_FRAME
 #ifndef NEW_FRAME
  #define NEW_FRAME
 #endif
#endif

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

#define FALSE  0
#define TRUE   1

#define BIT123  0x07
#define BIT4    0x08
#define BIT78   0xC0

#if defined (USE_DLL)
  #ifdef WIN32
    #define EXPORT __declspec (dllexport)
    #define IMPORT __declspec (dllimport)
  #endif
#else
  #define EXPORT GLOBAL
  #define IMPORT EXTERN
#endif

#ifndef __cplusplus
  #define EXTERN extern 
#else 
  #define EXTERN extern "C"
#endif

/* Horrible handling of GLOBAL and MAINFILE macros
   Documented in BugTrak#DNCL-3PWCL3 */
#ifdef L1_LIB
  #ifdef L1_COM_C
    #define GLOBAL 
    #define MAINFILE 1
  #else
    #ifndef __cplusplus   
      #define GLOBAL extern 
    #else 
      #define GLOBAL extern "C"
    #endif
  #endif
#else
  #define GLOBAL
#endif

#define LOCAL   static

#define AND &&
#define OR  ||
#define XOR(A,B) ((!(A) AND (B)) OR ((A) AND !(B)))

#define EQ  ==
#define NEQ !=

#ifndef NULL
#define NULL    0
#endif
/*==== TYPES ======================================================*/
#ifndef WIN32
  typedef char           BYTE;
#else
  typedef unsigned char  BYTE;
#endif

#if !defined (NUCLEUS)
typedef char           CHAR;
#endif



typedef long           LONG;
typedef unsigned char  UBYTE;
typedef unsigned char  UCHAR;
typedef unsigned short USHORT;
typedef unsigned long  ULONG;
typedef unsigned short UINT16;
typedef unsigned long  UINT32;
typedef unsigned short UNSIGNED16;

typedef unsigned long T_VOID_STRUCT;

#ifndef L1_LIB
typedef short          SHORT;
#ifdef WIN32
  typedef int            BOOL;
#else
  typedef UBYTE          BOOL;
#endif
#endif

#if !defined (T_SDU_DEFINED)

#define T_SDU_DEFINED

typedef struct
{
  USHORT l_buf;
  USHORT o_buf;
  UBYTE  buf[1];
} T_sdu;

#endif /* T_SDU_DEFINED */


#if !defined (T_FRAME_DESC_DEFINED)

#define T_FRAME_DESC_DEFINED

typedef struct 
{
  UBYTE  *Adr[2];
  USHORT  Len[2];
} T_FRAME_DESC;

#endif /* T_FRAME_DESC_DEFINED */


/*
 * for definitions of jumptables
 */
#ifndef NEW_ENTITY
 typedef void   (*T_VOID_FUNC)();
 typedef short  (*T_SHORT_FUNC)();
#endif
typedef USHORT (*T_USHORT_FUNC)();

/* SDU_TRAIL denotes the memory size starting at 'buf' to the end of T_sdu */

#define  SDU_TRAIL  ((char*)(((T_sdu*)0)+1)-(char*)(((T_sdu*)0)->buf))

/*==== EXPORT =====================================================*/
#define MAXIMUM(A,B) (((A)>(B))?(A):(B))

#define MINIMUM(A,B) (((A)<(B))?(A):(B))

#define _STR(x)  __STR(x)
#define __STR(x) #x

#define ALERT(CONDITION,TEXT) \
        {														   \
		   if (!(CONDITION))									   \
		      ext_abort (#TEXT "\n" __FILE__ ", line " _STR(__LINE__)); \
		}


/*==== MISC =======================================================*/


#endif