1 | /* |
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2 | * Multiprocessing Support for the Event Manager |
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3 | * |
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4 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * All rights assigned to U.S. Government, 1994. |
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7 | * |
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8 | * This material may be reproduced by or for the U.S. Government pursuant |
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9 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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10 | * notice must appear in all copies of this file and its derivatives. |
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11 | * |
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12 | * $Id$ |
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13 | */ |
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14 | |
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15 | #include <rtems/system.h> |
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16 | #include <rtems/event.h> |
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17 | #include <rtems/mpci.h> |
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18 | #include <rtems/mppkt.h> |
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19 | #include <rtems/object.h> |
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20 | #include <rtems/options.h> |
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21 | #include <rtems/states.h> |
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22 | #include <rtems/thread.h> |
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23 | |
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24 | /*PAGE |
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25 | * |
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26 | * _Event_MP_Send_process_packet |
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27 | * |
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28 | * This subprogram is not needed since there are no process |
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29 | * packets to be sent by this manager. |
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30 | * |
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31 | */ |
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32 | |
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33 | /*PAGE |
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34 | * |
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35 | * _Event_MP_Send_request_packet |
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36 | * |
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37 | */ |
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38 | |
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39 | rtems_status_code _Event_MP_Send_request_packet ( |
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40 | Event_MP_Remote_operations operation, |
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41 | Objects_Id event_id, |
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42 | rtems_event_set event_in |
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43 | ) |
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44 | { |
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45 | Event_MP_Packet *the_packet; |
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46 | |
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47 | switch ( operation ) { |
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48 | |
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49 | case EVENT_MP_SEND_REQUEST: |
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50 | |
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51 | the_packet = _Event_MP_Get_packet(); |
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52 | the_packet->Prefix.the_class = RTEMS_MP_PACKET_EVENT; |
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53 | the_packet->Prefix.length = sizeof ( Event_MP_Packet ); |
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54 | the_packet->Prefix.to_convert = sizeof ( Event_MP_Packet ); |
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55 | the_packet->operation = operation; |
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56 | the_packet->Prefix.id = event_id; |
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57 | the_packet->event_in = event_in; |
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58 | |
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59 | return |
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60 | _MPCI_Send_request_packet( |
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61 | rtems_get_node( event_id ), |
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62 | &the_packet->Prefix, |
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63 | STATES_READY |
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64 | ); |
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65 | |
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66 | break; |
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67 | |
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68 | case EVENT_MP_SEND_RESPONSE: |
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69 | break; |
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70 | |
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71 | } |
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72 | /* |
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73 | * The following line is included to satisfy compilers which |
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74 | * produce warnings when a function does not end with a return. |
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75 | */ |
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76 | return RTEMS_SUCCESSFUL; |
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77 | } |
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78 | |
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79 | /*PAGE |
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80 | * |
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81 | * _Event_MP_Send_response_packet |
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82 | * |
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83 | */ |
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84 | |
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85 | void _Event_MP_Send_response_packet ( |
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86 | Event_MP_Remote_operations operation, |
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87 | Thread_Control *the_thread |
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88 | ) |
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89 | { |
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90 | Event_MP_Packet *the_packet; |
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91 | |
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92 | switch ( operation ) { |
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93 | |
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94 | case EVENT_MP_SEND_RESPONSE: |
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95 | |
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96 | the_packet = ( Event_MP_Packet *) the_thread->receive_packet; |
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97 | |
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98 | /* |
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99 | * The packet being returned already contains the class, length, and |
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100 | * to_convert fields, therefore they are not set in this routine. |
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101 | */ |
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102 | the_packet->operation = operation; |
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103 | the_packet->Prefix.id = the_packet->Prefix.source_tid; |
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104 | |
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105 | _MPCI_Send_response_packet( |
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106 | rtems_get_node( the_packet->Prefix.source_tid ), |
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107 | &the_packet->Prefix |
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108 | ); |
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109 | break; |
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110 | |
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111 | case EVENT_MP_SEND_REQUEST: |
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112 | break; |
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113 | |
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114 | } |
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115 | } |
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116 | |
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117 | /*PAGE |
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118 | * |
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119 | * |
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120 | * _Event_MP_Process_packet |
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121 | * |
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122 | */ |
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123 | |
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124 | void _Event_MP_Process_packet ( |
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125 | rtems_packet_prefix *the_packet_prefix |
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126 | ) |
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127 | { |
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128 | Event_MP_Packet *the_packet; |
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129 | Thread_Control *the_thread; |
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130 | |
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131 | the_packet = (Event_MP_Packet *) the_packet_prefix; |
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132 | |
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133 | switch ( the_packet->operation ) { |
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134 | |
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135 | case EVENT_MP_SEND_REQUEST: |
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136 | |
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137 | the_packet->Prefix.return_code = rtems_event_send( |
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138 | the_packet->Prefix.id, |
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139 | the_packet->event_in |
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140 | ); |
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141 | |
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142 | _Event_MP_Send_response_packet( |
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143 | EVENT_MP_SEND_RESPONSE, |
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144 | _Thread_Executing |
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145 | ); |
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146 | break; |
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147 | |
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148 | case EVENT_MP_SEND_RESPONSE: |
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149 | |
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150 | the_thread = _MPCI_Process_response( the_packet_prefix ); |
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151 | |
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152 | _MPCI_Return_packet( the_packet_prefix ); |
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153 | |
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154 | break; |
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155 | |
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156 | } |
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157 | } |
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158 | |
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159 | /*PAGE |
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160 | * |
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161 | * _Event_MP_Send_object_was_deleted |
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162 | * |
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163 | * This subprogram is not needed since there are no objects |
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164 | * deleted by this manager. |
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165 | * |
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166 | */ |
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167 | |
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168 | /*PAGE |
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169 | * |
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170 | * _Event_MP_Send_extract_proxy |
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171 | * |
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172 | * This subprogram is not needed since there are no objects |
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173 | * deleted by this manager. |
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174 | * |
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175 | */ |
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176 | |
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177 | /*PAGE |
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178 | * |
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179 | * _Event_MP_Get_packet |
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180 | * |
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181 | */ |
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182 | |
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183 | Event_MP_Packet *_Event_MP_Get_packet ( void ) |
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184 | { |
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185 | return ( (Event_MP_Packet *) _MPCI_Get_packet() ); |
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186 | } |
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187 | |
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188 | /* end of file */ |
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