FreeCalypso > hg > fc-magnetite
annotate src/g23m-fad/ra/ra_shm.c @ 484:a1946652f71c
top README: update for the status of hybrid firmware
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 20 Jun 2018 08:18:48 +0000 |
parents | 90eb61ecd093 |
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rev | line source |
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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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138 bytes_to_read -= len; |
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139 offs += len; |
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140 } |
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141 } |
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142 return offs; |
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143 } |
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144 |
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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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146 { |
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147 U8 len = MINIMUM(pFD->len, bytes_to_read); |
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148 if (len) |
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149 { |
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150 pFD->len = len; |
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151 #ifdef TI_PS_16BIT_CPY |
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152 api_memcpy(pFD->buf, (UBYTE*)buffer, len); |
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153 #else |
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154 memcpy(pFD->buf, (UBYTE*)buffer, len); |
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155 #endif |
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156 } |
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157 return len; |
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158 } |
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159 |