FreeCalypso > hg > fc-selenite

annotate src/cs/services/tty/tty_env.c @ 112:fdecfb3bd860

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.../drv_app/r2d/r2d_*.c: LCD include case fixes from Magnetite R2D is not used in Selenite, but we strive to keep the two source trees in sync as much as possible to reduce the diffs.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 13 Oct 2018 16:56:22 +0000
parents b6a5e36de839
children
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1 /**
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2 * @file tty_env.c
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3 *
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4 * Coding of the Riviera Generic Functions,
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5 * except handle_message and handle_timer, which are
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6 * in tty_handle_message.c and tty_handle_timer.c
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7 *
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8 * @author Frederic Turgis (f-turgis@ti.com) & Gerard Cauvy (g-cauvy@ti.com)
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9 * @version 0.1
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10 */
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11
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12 /*
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13 * History:
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14 *
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15 * Date Modification
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16 * ------------------------------------
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17 * 01/27/2003 Create
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18 *
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19 * (C) Copyright 2003 by Texas Instruments Incorporated, All Rights Reserved
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20 */
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21
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22
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23 #include "tty/tty_i.h"
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24
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25 #include "rvm/rvm_priorities.h"
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26 #include "tty/tty_env.h"
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27 #include <string.h>
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28
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29 /**
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30 * Pointer on the structure gathering all the global variables
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31 * used by TTY instance.
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32 */
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33 T_TTY_ENV_CTRL_BLK *tty_env_ctrl_blk_p = NULL;
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34
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35
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36 /* External declaration */
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37 extern T_RV_RET tty_core(void);
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38
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39 /**
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40 * Called by the RV manager to learn
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41 * tty requirements in terms of memory, SWEs...
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42 *
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43 * @param swe_info Pointer to the structure to fill
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44 * containing infos related to the tty SWE.
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45 *
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46 * @return RVM_OK
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47 */
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48 T_RVM_RETURN tty_get_info(T_RVM_INFO_SWE * swe_info)
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49 {
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50 /* TTY is a Type 4 SWE. */
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51 swe_info->swe_type = RVM_SWE_TYPE_4;
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52
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53 memcpy(swe_info->type_info.type4.swe_name, "TTY", sizeof("TTY"));
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54 swe_info->type_info.type4.swe_use_id = TTY_USE_ID;
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55
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56 /* SWE info */
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57 swe_info->type_info.type4.stack_size = TTY_STACK_SIZE;
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58 swe_info->type_info.type4.priority = RVM_TTY_TASK_PRIORITY;
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59 swe_info->type_info.type4.version = BUILD_VERSION_NUMBER(0,1,0);
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60
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61 /* Memory bank info */
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62 swe_info->type_info.type4.nb_mem_bank = 1;
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63 memcpy(swe_info->type_info.type4.mem_bank[0].bank_name, "TTY_PRIM", sizeof("TTY_PRIM"));
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64 swe_info->type_info.type4.mem_bank[0].initial_params.size = TTY_MB_PRIM_SIZE;
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65 swe_info->type_info.type4.mem_bank[0].initial_params.watermark = TTY_MB_PRIM_WATERMARK;
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66
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67 /*
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68 * Linked SWE info.
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69 */
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70 swe_info->type_info.type4.nb_linked_swe = 0;
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71
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72 /* Set the return path: NOT USED. */
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73 swe_info->type_info.type4.return_path.callback_func = NULL;
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74 swe_info->type_info.type4.return_path.addr_id = 0;
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75
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76 /* Generic functions */
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77 swe_info->type_info.type4.set_info = tty_set_info;
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78 swe_info->type_info.type4.init = tty_init;
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79 swe_info->type_info.type4.core = tty_core;
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80 swe_info->type_info.type4.stop = tty_stop;
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81 swe_info->type_info.type4.kill = tty_kill;
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82
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83 return RVM_OK;
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84 }
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85
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86
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87 /**
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88 * Called by the RV manager to inform the tty SWE about
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89 * addr_id, return path, mb_id and error function.
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90 *
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91 * It is called only once.
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92 *
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93 * @param addr_id Address ID of the TTY SWE.
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94 * Used to send messages to the SWE.
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95 * @param return_path Return path array of the linked SWEs.
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96 * @param bk_id_table Array of memory bank ids allocated to the SWE.
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97 * @param call_back_error_ft Callback function to call in case of unrecoverable error.
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98 * @return RVM_MEMORY_ERR ou RVM_OK.
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99 */
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100 T_RVM_RETURN tty_set_info ( T_RVF_G_ADDR_ID addr_id,
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101 T_RV_RETURN_PATH return_path[],
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102 T_RVF_MB_ID bk_id_table[],
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103 T_RVM_CB_FUNC call_back_error_ft)
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104 {
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105 /* Memory bank status (red, yellow, green). */
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106 T_RVF_MB_STATUS mb_status;
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107
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108
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109 /* Create instance gathering all the variable used by TTY instance */
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110 mb_status = rvf_get_buf(bk_id_table[0],
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111 sizeof(T_TTY_ENV_CTRL_BLK),
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112 (T_RVF_BUFFER**)&tty_env_ctrl_blk_p);
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113 if (mb_status == RVF_RED)
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114 {
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115 TTY_SEND_TRACE("TTY: Error to get memory ",RV_TRACE_LEVEL_ERROR);
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116 return RVM_MEMORY_ERR;
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117 }
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118 else if (mb_status == RVF_YELLOW)
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119 {
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120 /*
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121 * The flag is yellow, there will soon be not enough memory anymore.
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122 */
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123 TTY_SEND_TRACE("TTY: Getting short on memory ", RV_TRACE_LEVEL_WARNING);
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124 }
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125
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126 /* Store the initial State; default is IDLE. */
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127 tty_env_ctrl_blk_p->state = TTY_IDLE;
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128
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129 /* Store the address ID. */
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parents:
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130 tty_env_ctrl_blk_p->addr_id = addr_id;
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parents:
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131
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parents:
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132 /* Store the pointer to the error function. */
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parents:
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133 tty_env_ctrl_blk_p->error_ft = call_back_error_ft;
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parents:
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134
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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135 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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136 * Store the mem bank id.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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137 * Memory bank ID (mb_id) can be retrieved later using rvf_get_mb_id function.
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parents:
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138 */
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parents:
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139 tty_env_ctrl_blk_p->prim_mb_id = bk_id_table[0];
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parents:
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140
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parents:
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141 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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142 * Array return_path: Return path of linked SWE.
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parents:
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143 * If the linked SWE have an API based on messages, their return path given
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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144 * by the set_info function would be stored and used to communicate with them.
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parents:
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145 * But since the linked SWE of TTY have an API based on functions, it is not
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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146 * necessary to store their return path.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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147 */
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parents:
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148
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parents:
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149 return RVM_OK;
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parents:
diff changeset
150 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151
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parents:
diff changeset
152
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parents:
diff changeset
153 /**
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parents:
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154 * Called by the RV manager to initialize the
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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155 * tty SWE before creating the task and calling tty_start.
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parents:
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156 *
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parents:
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157 * @return RVM_OK
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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:
diff changeset
159 T_RVM_RETURN tty_init (void)
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parents:
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160 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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161 /*
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parents:
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162 * TTY Global Initialization.
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parents:
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163 */
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parents:
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164
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parents:
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165 return RVM_OK;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 /**
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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170 * Called by the RV manager to stop the tty SWE.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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171 *
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parents:
diff changeset
172 * @return RVM_OK or RVM_INTERNAL_ERR
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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173 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 T_RVM_RETURN tty_stop (void)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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177 * Here we should stop the activities of the SWE
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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178 * It is still possible to send messages to other SWE, to unregister for example.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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179 */
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parents:
diff changeset
180 TTY_SEND_TRACE("TTY: stop called", RV_TRACE_LEVEL_DEBUG_LOW);
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parents:
diff changeset
181
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parents:
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182 return RVM_OK;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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183 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 /**
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 * Called by the RV manager to kill the tty SWE,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 * after the tty_stop function has been called.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 *
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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190 * @return RVM_OK
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 T_RVM_RETURN tty_kill (void)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 * Here we cannot send messages anymore. We only free the last
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 * used resources, like the control block buffer.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 TTY_SEND_TRACE("TTY: kill called", RV_TRACE_LEVEL_DEBUG_LOW);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 rvf_free_buf(tty_env_ctrl_blk_p);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202 return RVM_OK;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 }