+
−/* 
+
−+----------------------------------------------------------------------------- 
+
−|  Project :  GSM-F&D (8411)
+
−|  Modul   :  RA_SHM
+
−+----------------------------------------------------------------------------- 
+
−|  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 functions for accessing the
+
−|             shared memory segment between MCU and DSP
+
−+----------------------------------------------------------------------------- 
+
−*/ 
+
−
+
−#ifndef RA_SHM_C
+
−#define RA_SHM_C
+
−#endif
+
−
+
−#define ENTITY_RA
+
−
+
−/*==== INCLUDES ===================================================*/
+
−
+
−#include <string.h>
+
−#include "typedefs.h"
+
−#include "pconst.cdg"
+
−#include "vsi.h"
+
−#include "custom.h"
+
−#include "gsm.h"
+
−#include "cnf_ra.h"
+
−#include "prim.h"
+
−#include "pei.h"
+
−#include "tok.h"
+
−#include "ccdapi.h"
+
−#include "ra.h"
+
−
+
−/*==== CONST ======================================================*/
+
−/*==== TYPES ======================================================*/
+
−/*==== VARIABLES ==================================================*/
+
−/*==== FUNCTIONS ==================================================*/
+
−
+
−/*
+
−+--------------------------------------------------------------------+
+
−| PROJECT : GSM-F&D (8411)        MODULE  : RA_SHM                   |
+
−| STATE   : code                  ROUTINE : shm_set_dsp_buffer       |
+
−+--------------------------------------------------------------------+
+
−
+
−  PURPOSE :
+
−*/
+
−
+
−GLOBAL USHORT shm_set_dsp_buffer(T_FRAME_DESC *data, register USHORT *buffer, USHORT offs, USHORT free)
+
−{
+
−  register UBYTE  *b;
+
−  USHORT len, segment;
+
−
+
−  buffer = (USHORT*) ( ( (UBYTE*) buffer ) + offs );
+
−  /*
+
−   * write the both segments specified by the frame descriptor data to the DSP mem.
+
−   */
+
−  for (segment = 0; segment < 2; segment++)
+
−  {
+
−    /*
+
−     * limitate the length fields;
+
−     */
+
−    len = free;
+
−
+
−    if (len > data->Len[segment])
+
−      len = data->Len[segment];
+
−
+
−    if (len)
+
−    {
+
−      data->Len[segment] -= len;
+
−      b = data->Adr[segment];
+
−      {
+
−        memcpy( (UBYTE*) buffer, (UBYTE*) b, (USHORT) len );
+
−        buffer = (USHORT*) ( ( (UBYTE*) buffer ) + len );
+
−        free -= len;
+
−        offs += len;
+
−      }
+
−    }
+
−  }
+
−  return offs;
+
−}
+
−
+
−GLOBAL U8 shm_set_dsp_buffer_new(T_FD *pFD, USHORT *buffer, U8 offs, U8 free)
+
−{
+
−  U8 len;
+
−
+
−  buffer = (USHORT*)(((UBYTE*)buffer) + offs);
+
−  /*
+
−   * limitate the length fields;
+
−   */
+
−  len = MINIMUM(free, pFD->len);
+
−  if (len)
+
−  {
+
−    memcpy((UBYTE*)buffer, (UBYTE*)pFD->buf, (USHORT)len);
+
−    buffer = (USHORT*)(((UBYTE*)buffer) + len);
+
−  }
+
−  return len;
+
−}
+
−
+
−/*
+
−+--------------------------------------------------------------------+
+
−| PROJECT : GSM-F&D (8411)        MODULE  : RA_SHM                   |
+
−| STATE   : code                  ROUTINE : shm_get_dsp_buffer       |
+
−+--------------------------------------------------------------------+
+
−
+
−  PURPOSE :
+
−
+
−*/
+
−GLOBAL USHORT shm_get_dsp_buffer(T_FRAME_DESC *data, register USHORT *buffer, USHORT bytes_to_read)
+
−{
+
−  register UBYTE  *b;
+
−  USHORT  offs = 0;
+
−  USHORT  len, segment;
+
−  /*
+
−   * read the both segments specified by the frame descriptor data from the DSP mem
+
−   */
+
−  for (segment = 0; segment < 2; segment++)
+
−  {
+
−    len = MINIMUM(data->Len[segment], bytes_to_read);
+
−    if (len)
+
−    {
+
−      data->Len[segment] -= len;
+
−      b = data->Adr[segment];
+
−#ifdef TI_PS_16BIT_CPY
+
−      api_memcpy((UBYTE*)b, (UBYTE*)buffer, (USHORT)len );
+
−#else
+
−      memcpy((UBYTE*)b, (UBYTE*)buffer, (USHORT)len );
+
−#endif
+
−      buffer = (USHORT*)(((UBYTE*)buffer) + len);
+
−      bytes_to_read -= len;
+
−      offs += len;
+
−    }
+
−  }
+
−  return offs;
+
−}
+
−
+
−GLOBAL U8 shm_get_dsp_buffer_new(USHORT *buffer, U8 bytes_to_read, T_FD *pFD)
+
−{
+
−  U8 len = MINIMUM(pFD->len, bytes_to_read);
+
−  if (len)
+
−  {
+
−    pFD->len = len;
+
−#ifdef TI_PS_16BIT_CPY
+
−    api_memcpy(pFD->buf, (UBYTE*)buffer, len);
+
−#else
+
−    memcpy(pFD->buf, (UBYTE*)buffer, len);
+
−#endif
+
−  }
+
−  return len;
+
−}
+
−