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annotate src/g23m-fad/ra/ra_shm.c @ 460:4d4f0bba9469

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doc/D-Sample written
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 19 Mar 2018 18:45:16 +0000
parents 90eb61ecd093
children
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project : GSM-F&D (8411)
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4 | Modul : RA_SHM
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5 +-----------------------------------------------------------------------------
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6 | Copyright 2002 Texas Instruments Berlin, AG
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7 | All rights reserved.
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8 |
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9 | This file is confidential and a trade secret of Texas
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10 | Instruments Berlin, AG
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11 | The receipt of or possession of this file does not convey
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12 | any rights to reproduce or disclose its contents or to
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13 | manufacture, use, or sell anything it may describe, in
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14 | whole, or in part, without the specific written consent of
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15 | Texas Instruments Berlin, AG.
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16 +-----------------------------------------------------------------------------
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17 | Purpose : This Modul defines the functions for accessing the
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18 | shared memory segment between MCU and DSP
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19 +-----------------------------------------------------------------------------
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20 */
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21
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22 #ifndef RA_SHM_C
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23 #define RA_SHM_C
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24 #endif
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25
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26 #define ENTITY_RA
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27
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28 /*==== INCLUDES ===================================================*/
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29
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30 #include <string.h>
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31 #include "typedefs.h"
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32 #include "pconst.cdg"
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33 #include "vsi.h"
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34 #include "custom.h"
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35 #include "gsm.h"
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36 #include "cnf_ra.h"
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37 #include "prim.h"
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38 #include "pei.h"
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39 #include "tok.h"
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40 #include "ccdapi.h"
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41 #include "ra.h"
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42
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43 /*==== CONST ======================================================*/
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44 /*==== TYPES ======================================================*/
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45 /*==== VARIABLES ==================================================*/
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46 /*==== FUNCTIONS ==================================================*/
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47
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48 /*
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49 +--------------------------------------------------------------------+
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50 | PROJECT : GSM-F&D (8411) MODULE : RA_SHM |
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51 | STATE : code ROUTINE : shm_set_dsp_buffer |
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52 +--------------------------------------------------------------------+
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53
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54 PURPOSE :
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55 */
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56
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57 GLOBAL USHORT shm_set_dsp_buffer(T_FRAME_DESC *data, register USHORT *buffer, USHORT offs, USHORT free)
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58 {
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59 register UBYTE *b;
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60 USHORT len, segment;
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61
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62 buffer = (USHORT*) ( ( (UBYTE*) buffer ) + offs );
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63 /*
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64 * write the both segments specified by the frame descriptor data to the DSP mem.
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65 */
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66 for (segment = 0; segment < 2; segment++)
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67 {
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68 /*
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69 * limitate the length fields;
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70 */
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71 len = free;
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72
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73 if (len > data->Len[segment])
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74 len = data->Len[segment];
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75
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76 if (len)
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77 {
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78 data->Len[segment] -= len;
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79 b = data->Adr[segment];
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80 {
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81 memcpy( (UBYTE*) buffer, (UBYTE*) b, (USHORT) len );
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82 buffer = (USHORT*) ( ( (UBYTE*) buffer ) + len );
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83 free -= len;
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84 offs += len;
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85 }
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86 }
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87 }
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88 return offs;
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89 }
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90
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91 GLOBAL U8 shm_set_dsp_buffer_new(T_FD *pFD, USHORT *buffer, U8 offs, U8 free)
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92 {
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93 U8 len;
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94
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95 buffer = (USHORT*)(((UBYTE*)buffer) + offs);
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96 /*
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97 * limitate the length fields;
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98 */
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99 len = MINIMUM(free, pFD->len);
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100 if (len)
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101 {
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102 memcpy((UBYTE*)buffer, (UBYTE*)pFD->buf, (USHORT)len);
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103 buffer = (USHORT*)(((UBYTE*)buffer) + len);
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104 }
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105 return len;
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106 }
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107
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108 /*
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109 +--------------------------------------------------------------------+
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110 | PROJECT : GSM-F&D (8411) MODULE : RA_SHM |
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111 | STATE : code ROUTINE : shm_get_dsp_buffer |
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112 +--------------------------------------------------------------------+
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113
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114 PURPOSE :
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115
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116 */
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117 GLOBAL USHORT shm_get_dsp_buffer(T_FRAME_DESC *data, register USHORT *buffer, USHORT bytes_to_read)
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118 {
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119 register UBYTE *b;
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120 USHORT offs = 0;
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121 USHORT len, segment;
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122 /*
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123 * read the both segments specified by the frame descriptor data from the DSP mem
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124 */
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125 for (segment = 0; segment < 2; segment++)
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126 {
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127 len = MINIMUM(data->Len[segment], bytes_to_read);
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128 if (len)
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129 {
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130 data->Len[segment] -= len;
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131 b = data->Adr[segment];
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132 #ifdef TI_PS_16BIT_CPY
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133 api_memcpy((UBYTE*)b, (UBYTE*)buffer, (USHORT)len );
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134 #else
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135 memcpy((UBYTE*)b, (UBYTE*)buffer, (USHORT)len );
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136 #endif
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137 buffer = (USHORT*)(((UBYTE*)buffer) + len);
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parents:
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138 bytes_to_read -= len;
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139 offs += len;
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parents:
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140 }
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parents:
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141 }
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parents:
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142 return offs;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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143 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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144
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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145 GLOBAL U8 shm_get_dsp_buffer_new(USHORT *buffer, U8 bytes_to_read, T_FD *pFD)
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parents:
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146 {
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parents:
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147 U8 len = MINIMUM(pFD->len, bytes_to_read);
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parents:
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148 if (len)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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149 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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150 pFD->len = len;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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151 #ifdef TI_PS_16BIT_CPY
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parents:
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152 api_memcpy(pFD->buf, (UBYTE*)buffer, len);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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153 #else
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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154 memcpy(pFD->buf, (UBYTE*)buffer, len);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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155 #endif
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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156 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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157 return len;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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158 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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159