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annotate nuc-fw/riviera/rvm/rvm_mem.c @ 118:21de8d8e6ea7

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checking in Riviera code from the Sotomodem version
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Tue, 29 Oct 2013 07:03:45 +0000
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children 15e972110527
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1 /**
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2 *
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3 * @file rvm_mem.c
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4 *
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5 * This file contains the functions related to memory management within RVM.
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6 *
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7 * @author David Lamy-Charrier (d-lamy@ti.com)
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8 * @version 0.1
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9 *
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10 */
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11
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12 /*
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13 * Revision History:
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14 *
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15 * 10/26/2001 David Lamy-Charrier Create for Riviera 1.6.
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16 *
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17 * (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved
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18 */
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19
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20 #include "rvm/rvm_i.h"
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21 #include "rvm/rvm_gen.h"
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22 #include "rvm/rvm_api.h"
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23 #include "rvm/rvm_use_id_list.h"
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24 #include "rvf/rvf_env.h"
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25
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26 extern T_RVM_GET_INFO_FUNC RVM_SWE_GET_INFO_ARRAY[];
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27
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28 extern T_RVM_KNOWN_SWE * rvm_swe_array;
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29
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30 /*******************************************************************************
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31 ** Function rvm_delete_used_memory
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32 **
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33 ** Description Internal function which deletes used local mem if an error
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34 ** was received or at the end of the start/stop process.
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35 **
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36 *******************************************************************************/
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37 T_RVM_RETURN rvm_delete_used_memory ( T_RVM_PROCESSING_SWE * appli)
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38 {
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39 T_RVF_BUFFER_Q buffer_to_free_q = {0, 0, 0};
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40 T_RVM_PROCESSING_SWE * cur_elem = appli;
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41
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42 while (cur_elem != NULL)
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43 {
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44 rvf_enqueue (&buffer_to_free_q, cur_elem);
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45 cur_elem = cur_elem->next_swe;
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46 }
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47
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48 while (buffer_to_free_q.p_first)
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49 {
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50 rvf_free_buf (rvf_dequeue (&buffer_to_free_q));
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51 }
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52
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53 return RVM_OK;
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54 }
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55
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56
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57 /*******************************************************************************
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58 ** Function rvm_delete_created_mb
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59 **
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60 ** Description Internal function which deletes all created MB if an error
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61 ** was received, or in case application has to be stopped.
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62 **
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63 *******************************************************************************/
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64 T_RVM_RETURN rvm_delete_created_mb (T_RVM_PROCESSING_SWE * appli)
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65 {
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66 UINT8 mb_index;
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67 T_RVM_PROCESSING_SWE * cur_elem = appli;
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68 volatile T_RV_RET ret_value = RV_OK;
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69 UINT8 mb_to_delete;
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70
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71 while (cur_elem != NULL )
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72 {
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73 UINT8 swe_index = cur_elem->swe_id;
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74
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75 /* If more than one appli is using this SWE, cannot delete MB
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76 Process to the next SWE. */
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77 if (rvm_swe_array[swe_index].nb_using_appli > 1)
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78 {
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79 cur_elem = cur_elem->next_swe; /* process the next SWE */
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80 continue;
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81 }
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82
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83 /* If the state is running, it means that this SWE has not
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84 to be stopped. */
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85 if (rvm_swe_array[swe_index].swe_state == SWE_RUNNING)
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86 {
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87 cur_elem = cur_elem->next_swe; /* process the next SWE */
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88 continue;
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89 }
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90
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91 /* We're here:
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92 - either because swe_state == SWE_NOT_STARTED => error in starting prcess
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93 - either because swe_state == SWE_STOPPING => regular stopping process */
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94
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95 if (cur_elem->nb_created_mb == 0)
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96 {
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97 cur_elem = cur_elem->next_swe; /* process the next SWE */
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98 continue;
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99 }
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100
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101 mb_to_delete = cur_elem->nb_created_mb;
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102
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103 for( mb_index = 0; mb_index < mb_to_delete; mb_index++)
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104 {
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105 ret_value = rvf_delete_mb(cur_elem->swe_mem_bank[mb_index].mb_name);
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106 if (ret_value != RV_OK)
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107 {
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108 rvf_send_trace("RVM: Error in deletion of memory bank: ", 39, NULL_PARAM, RV_TRACE_LEVEL_WARNING, RVM_USE_ID );
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109 rvf_send_trace(cur_elem->swe_mem_bank[mb_index].mb_name, RVF_MAX_MB_LEN, NULL_PARAM, RV_TRACE_LEVEL_WARNING, RVM_USE_ID );
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110 }
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111 else
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112 {
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113 (cur_elem->nb_created_mb)--;
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114 }
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115
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116 ret_value = RVM_OK;
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117 }
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118
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119 cur_elem = cur_elem->next_swe; /* process the next SWE */
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120 }
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121
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122 return ret_value;
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123 }
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124
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125 /*******************************************************************************
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126 **
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127 ** Function rvm_check_memory_requirement
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128 **
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129 ** Description This function checks if there is enough memory
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130 ** to start a SWE(and all the linked SWEs)
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131 **
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132 ** Parameters: T_RVM_PROCESSING_SWE * appli: list of required SWEs with their parameters.
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133 **
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134 ** Returns T_RVM_RETURN: RVM_OK if there is enough memory, else RVM_MEMORY_ERR.
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135 **
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136 *******************************************************************************/
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137 T_RVM_RETURN rvm_verify_memory_requirement( T_RVM_PROCESSING_SWE * appli,
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138 T_RVM_GROUP_DIRECTIVE* gd,
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139 UINT8 cnt) {
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140 T_RVM_PROCESSING_SWE * cur_swe = appli;
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141 UINT32 required_mem = 0;
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142 UINT32 total_mem = 0;
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143 UINT32 used_mem = 0;
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144 UINT8 mb_index;
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145 UINT8 i=0;
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146 UINT16 host_task_mem=0;
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147
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148
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149 /* get available memory from the rvf */
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150 if ( rvf_get_available_mem( &total_mem, &used_mem) != RVF_OK )
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151 { return RVM_MEMORY_ERR;
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152 }
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153
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154 /* count required memory */
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155 while (cur_swe !=NULL ) /* for each SWE */
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156 {
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157 UINT8 swe_index = cur_swe->swe_id;
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158
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159 /*
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160 ** If SWE is already running => MB already created => do nothing
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161 */
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162 if (rvm_swe_array[swe_index].swe_state != SWE_RUNNING )
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163 {
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164 for( mb_index = 0; mb_index < cur_swe->nb_requested_mb; mb_index++) /* for each mb */
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165 {
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166 required_mem += cur_swe->swe_mem_bank[mb_index].mb_initial_param.size;
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167 }
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168
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169 /* add the necessary stack sizes */
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170 /* TO DO: add the stack size for host groups not yet started */
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171 if( (cur_swe->swe_type == RVM_SWE_TYPE_3)
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172 || (cur_swe->swe_type == RVM_SWE_TYPE_4) )
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173 /* || ((cur_swe->swe_type == RVM_SWE_TYPE_2) && (rvm_swe_array[swe_index].group_index == RVM_OWN_GROUP) )) */
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174 {
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175 required_mem += rvm_swe_array[swe_index].swe_stack_size;
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176 required_mem += SYSTEM_TASK_MEM; /* only for type 3 & 4. A-M-E-N-D-E-D! */
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177 }
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178
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179 }
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180 cur_swe = cur_swe->next_swe;
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181 }
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182
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183 /* type 2 group host system and stack mem. is catered for here */
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184 for(i=0; i<cnt; i++) host_task_mem+=gd[i].stack_size; /* A-M-E-N-D-E-D! */
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185 host_task_mem+=(cnt*SYSTEM_TASK_MEM);
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186
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187 /* compare available memory and required memory (eventually, use a percentage to improve performances) */
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188 if ((required_mem+host_task_mem) + used_mem > total_mem ) { /* A-M-E-N-D-E-D! */
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189 RVM_TRACE_WARNING_PARAM("RVM: Memory required (incl. used): ", (UINT32)(required_mem+host_task_mem+ used_mem) );
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190 RVM_TRACE_WARNING_PARAM("RVM: Total Memory available : ", (UINT32)total_mem);
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191 return RVM_MEMORY_ERR;
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192 } else{
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193 return RVM_OK;
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194 }
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195 }
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196
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197
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198 /*******************************************************************************
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199 **
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200 ** Function rvm_allocate_mem
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201 **
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202 ** Description This function creates all the required memory banks or
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203 ** increases their size if needed, to start a SWE.
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204 **
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205 ** Parameters: T_RVM_PROCESSING_SWE * appli: list of required SWEs with their parameters.
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206 **
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207 ** Returns T_RVM_RETURN: RVM_OK if all allocations are successful,
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208 ** else RVM_MEMORY_ERR and it releases all the allocated memory.
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209 **
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210 *******************************************************************************/
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211 T_RVM_RETURN rvm_allocate_mb( T_RVM_PROCESSING_SWE * appli)
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212 { T_RVM_PROCESSING_SWE * cur_swe = appli;
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213 UINT8 mb_index;
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214 volatile T_RVM_RETURN rvm_ret_value = RVM_OK;
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215
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216 /* for each SWE in the list */
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217 while ((cur_swe != NULL ) && (rvm_ret_value == RVM_OK))
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218 {
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219 UINT8 swe_index = cur_swe->swe_id;
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220
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221 if (rvm_swe_array[swe_index].swe_state == SWE_NOT_STARTED)
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222 /* If the state is not SWE_RUNNING, then the MBs have to be created */
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223 {
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224 for( mb_index = 0; mb_index < cur_swe->nb_requested_mb; mb_index++) /* for each mb */
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225 { T_RVF_MB_PARAM mb_param;
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226 /* add the initial size */
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227 mb_param.size = cur_swe->swe_mem_bank[mb_index].mb_initial_param.size;
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228 mb_param.watermark = cur_swe->swe_mem_bank[mb_index].mb_initial_param.watermark;
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229
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230 /* create the mb */
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231 if ( mb_param.size != 0)
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232 {
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233 /* create the mb */
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234 if ( rvf_create_mb( cur_swe->swe_mem_bank[mb_index].mb_name, mb_param, &(cur_swe->bk_id_table[mb_index]) ) != RVF_OK)
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235 {
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236 /* if an error occurs */
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237 rvm_ret_value = RVM_MEMORY_ERR;
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238 break;
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239 }
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240 else
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241 {
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242 cur_swe->nb_created_mb++;
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243 }
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244 }
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245 }
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246 }
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247
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248 cur_swe = cur_swe->next_swe; /* process the next SWE */
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249 }
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250
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251 if (rvm_ret_value != RVM_OK)
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252 /* Something went wrong, should release all used memory */
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253 {
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254 rvf_send_trace("RVM: Problem in memory bank creation !!!", 40, NULL_PARAM, RV_TRACE_LEVEL_WARNING, RVM_USE_ID );
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255 if (rvm_delete_created_mb (appli) != RVM_OK)
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256 {
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257 rvf_send_trace("RVM: MB deleting error!!!", 25, NULL_PARAM, RV_TRACE_LEVEL_WARNING, RVM_USE_ID );
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258 }
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259
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260 }
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261 return rvm_ret_value;
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262 }
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263
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264
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265 /*******************************************************************************
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266 **
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267 ** Function rvm_allocate_stack_buffer
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268 **
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269 ** Description This function allocates a buffer for the stack of a new
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270 ** task created by RVM.
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271 **
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272 ** Parameters: UINT32 stack_size: size of stack.
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273 ** T_RVF_BUFFER** stack_ptr: pointer to the allocated buffer.
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274 **
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275 ** Returns T_RVM_RETURN: RVM_OK if all allocation is successful,
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276 ** else RVM_MEMORY_ERR.
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277 **
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278 *******************************************************************************/
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279 T_RVM_RETURN rvm_allocate_stack_buffer( UINT32 stack_size, T_RVF_BUFFER** stack_ptr )
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280 { T_RVF_MB_PARAM mb_params;
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281
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282 /* increase the size of the stack MB before allocating the new buffer */
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283 if( rvf_get_mb_param( RVM_STACK_MB, &mb_params) != RV_OK)
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284 { return RVM_MEMORY_ERR;
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285 }
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286
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287 mb_params.size += stack_size;
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288 mb_params.watermark += stack_size;
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289
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290 if( rvf_set_mb_param( RVM_STACK_MB, &mb_params) != RV_OK)
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291 { return RVM_MEMORY_ERR;
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292 }
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293
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294 if( rvf_get_buf( rvm_stack_mem_bank, stack_size, stack_ptr) == RVF_RED)
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295 { return RVM_MEMORY_ERR;
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296 }
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297 return RVM_OK;
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298
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299 }
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300