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view src/gpf/tst/drv/titrc.c @ 268:f2e52cab0a73

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abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents 4e78acac3d88
children
line wrap: on
line source

/* 
+------------------------------------------------------------------------------
|  File:       titrc.c
+------------------------------------------------------------------------------
|  Copyright 2004 Texas Instruments Deutschland, 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 Deutschland, AG. 
+----------------------------------------------------------------------------- 
|  Purpose :  This Module defines the functionality of the TITRC driver
|             to communicate with the TI trace task.
+----------------------------------------------------------------------------- 
*/ 


#ifndef __TITRC_C__
#define __TITRC_C__
#endif

#include "typedefs.h"
#include "string.h"
#include "tstheader.h"
#include "rvt_gen.h"
#include "gdi.h"
#include "serialswitch.h"

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

typedef struct
{
  USHORT Handle;
  USHORT EnabledSignalType;
  T_DRV_CB_FUNC Callback;
  T_RVT_USER_ID trc_id;
  unsigned char connected;
  T_RVT_BUFFER read_ptr;
  unsigned int read_len;
} T_TITRC_DATA;

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

#define ALLOWED_TITRC_SIGNALS   (DRV_SIGTYPE_READ|DRV_SIGTYPE_CONNECT) 


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

extern USHORT emergeny_trace;

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

#ifndef RUN_INT_RAM
T_TITRC_DATA TITRC_Data;
T_DRV_SIGNAL Signal;
#else
extern T_TITRC_DATA TITRC_Data;
#endif

#ifndef RUN_FLASH
char header_buffer[TST_BIG_HEADER_SIZE];
#endif

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

#ifndef RUN_INT_RAM
extern USHORT TITRC_Write ( void *Buffer, ULONG *BytesToWrite ) ;
#endif

#ifndef RUN_INT_RAM
/*
+--------------------------------------------------------------------+
| PROJECT : GSM-Frame (8415)           MODULE  : TITRC               |
| STATE   : code                       ROUTINE : TITRC_Read          |
+--------------------------------------------------------------------+

  PURPOSE : read data from driver

*/
USHORT TITRC_Read ( void *Buffer, ULONG *BytesToRead )
{

  if ( TITRC_Data.read_ptr )
  {
    if ( *BytesToRead != 0 )
    {
      if ( *BytesToRead > TITRC_Data.read_len )
        *BytesToRead = TITRC_Data.read_len;

      memcpy ( Buffer, TITRC_Data.read_ptr, *BytesToRead );

      if ( *BytesToRead < TITRC_Data.read_len )
      {
        TITRC_Data.read_ptr += *BytesToRead;
        TITRC_Data.read_len -= *BytesToRead;
      }
      else
        TITRC_Data.read_ptr = NULL;
    }
    else
    {
      *BytesToRead = TITRC_Data.read_len;
    }
  }
  else
  {
    *BytesToRead = 0;
  }

  return DRV_OK;
}
#endif

#ifndef RUN_FLASH
/*
+--------------------------------------------------------------------+
| PROJECT : GSM-Frame (8415)           MODULE  : TITRC               |
| STATE   : code                       ROUTINE : TITRC_Write         |
+--------------------------------------------------------------------+

  PURPOSE : write data to driver

*/
USHORT TITRC_Write ( void *Buffer, ULONG *BytesToWrite )
{
T_RVT_FORMAT msg_format;
char *ptr = (char*)Buffer;
ULONG BytesWritten;
ULONG ToWrite;
T_RVT_BUFFER rvt_buffer;

  msg_format = RVT_BINARY_FORMAT;

  if ( emergeny_trace )
  {
    ptr--;
    *ptr = 0x13;
    ToWrite = (ULONG)*BytesToWrite;
    ToWrite += 1;
    BytesWritten = (ULONG)SER_tr_WriteNBytes (1, (SYS_UWORD8*)ptr, (SYS_UWORD32)ToWrite);
    *BytesToWrite = BytesWritten;
  }
  else
  {
    if ( *BytesToWrite & PRIM_HEADER_FLAG )
    {
      memcpy ( header_buffer, (char*)Buffer, TST_BIG_HEADER_SIZE );
      return DRV_OK;
    }
    if ( *BytesToWrite & PRIM_DATA_FLAG )
    {
      ToWrite = *BytesToWrite & ~PRIM_DATA_FLAG;
      if ( rvt_mem_alloc(TITRC_Data.trc_id, ToWrite+TST_BIG_HEADER_SIZE, &rvt_buffer) != RVT_OK )
        return DRV_BUFFER_FULL;
      if ( rvt_buffer != NULL )
      {
        memcpy ( (char*)rvt_buffer, header_buffer, TST_BIG_HEADER_SIZE );
        memcpy ( (char*)rvt_buffer+TST_BIG_HEADER_SIZE, (char*)Buffer, ToWrite );
        if ( rvt_send_trace_no_cpy ( rvt_buffer, TITRC_Data.trc_id, (T_RVT_MSG_LG)ToWrite+TST_BIG_HEADER_SIZE, msg_format ) != RVT_OK )
          return DRV_BUFFER_FULL;
        else
          return DRV_OK;
      }
    }
    if ( rvt_send_trace_cpy ( (T_RVT_BUFFER)Buffer, TITRC_Data.trc_id, (T_RVT_MSG_LG)*BytesToWrite, msg_format ) != RVT_OK )
      return DRV_BUFFER_FULL;
  }
  return DRV_OK;
}
#endif

#ifndef RUN_INT_RAM
/*
+--------------------------------------------------------------------+
| PROJECT : GSM-Frame (8415)           MODULE  : TITRC               |
| STATE   : code                       ROUTINE : TITRC_SetSignal     |
+--------------------------------------------------------------------+

  PURPOSE : enable signal for the driver

*/
USHORT TITRC_SetSignal ( USHORT SignalType )
{
	if ( !(SignalType & ALLOWED_TITRC_SIGNALS) )
    return DRV_INVALID_PARAMS;
  else
    TITRC_Data.EnabledSignalType |= SignalType;
  
  return DRV_OK;
}
#endif

#ifndef RUN_INT_RAM
/*
+--------------------------------------------------------------------+
| PROJECT : GSM-Frame (8415)           MODULE  : TITRC               |
| STATE   : code                       ROUTINE : TITRC_ResetSignal   |
+--------------------------------------------------------------------+

  PURPOSE : disable signal for the driver

*/
USHORT TITRC_ResetSignal ( USHORT SignalType )
{
	if ( !(SignalType & ALLOWED_TITRC_SIGNALS) )
    return DRV_INVALID_PARAMS;
  else
    TITRC_Data.EnabledSignalType &= ~SignalType;
  
  return DRV_OK;
}
#endif

#ifndef RUN_INT_RAM
/*
+--------------------------------------------------------------------+
| PROJECT : GSM-Frame (8415)           MODULE  : TITRC               |
| STATE   : code                       ROUTINE : TITRC_SetConfig     |
+--------------------------------------------------------------------+

  PURPOSE : set configuration for the driver

*/
USHORT TITRC_SetConfig ( char *Buffer )
{

  if ( TITRC_Data.connected == FALSE )
  {
    Signal.SignalType = DRV_SIGTYPE_CONNECT;
	  Signal.DrvHandle = TITRC_Data.Handle;
    (TITRC_Data.Callback)( &Signal );
    TITRC_Data.connected = TRUE;
  }
  return DRV_OK;
}
#endif

#ifndef RUN_INT_RAM
/*
+--------------------------------------------------------------------+
| PROJECT : GSM-Frame (8415)           MODULE  : TITRC               |
| STATE   : code                       ROUTINE : TITRC_Callback      |
+--------------------------------------------------------------------+

  PURPOSE : callback function of the driver

*/
int callback_busy = 0;
void TITRC_Callback ( T_RVT_BUFFER ptr, UINT16 len )
{
  if ( 	callback_busy == 1 )
    for (;;)
      ;

	callback_busy = 1;
  if ( TITRC_Data.EnabledSignalType & DRV_SIGTYPE_READ )
  {
    TITRC_Data.read_ptr = ptr;
    TITRC_Data.read_len = len;
    Signal.SignalType = DRV_SIGTYPE_READ;
	  Signal.DrvHandle = TITRC_Data.Handle;
    (TITRC_Data.Callback)( &Signal );
  }
	callback_busy = 0;
}
#endif

#ifndef RUN_INT_RAM
/*
+--------------------------------------------------------------------+
| PROJECT : GSM-Frame (8415)           MODULE  : TITRC               |
| STATE   : code                       ROUTINE : TITRC_Init          |
+--------------------------------------------------------------------+

  PURPOSE : initialize driver

*/
USHORT TITRC_Init ( USHORT DrvHandle, T_DRV_CB_FUNC CallbackFunc, T_DRV_EXPORT const **DrvInfo )
{                
static const T_DRV_EXPORT TITRC_Info =
{
  "TITRC",
  0,
  {
#ifdef _TOOLS_
    TITRC_Init,
#endif
    NULL,
    TITRC_Read,
    TITRC_Write,
    NULL,
    NULL,
    NULL,
    TITRC_SetSignal,
    TITRC_ResetSignal,
    TITRC_SetConfig,
    NULL,
    NULL,
  }
};

  TITRC_Data.connected = FALSE;
    
  TITRC_Data.Handle = DrvHandle;

  TITRC_Data.EnabledSignalType = 0;

  TITRC_Data.Callback = CallbackFunc;

  if ( rvt_register_id ( (char*)"L23",&TITRC_Data.trc_id, TITRC_Callback ) == RVT_INVALID_PARAMETER )
    return DRV_INITFAILURE;

  *DrvInfo = &TITRC_Info;

  return DRV_OK;           
}
#endif