FreeCalypso > hg > fc-magnetite
annotate src/g23m-aci/bat/bat_adp.c @ 336:be011556e71f
FCHG: API implementation started
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 14 Dec 2017 21:01:59 +0000 |
parents | 53929b40109c |
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rev | line source |
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1 /* |
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2 +----------------------------------------------------------------------------- |
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3 | Project : |
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4 | Modul : BAT |
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5 +----------------------------------------------------------------------------- |
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6 | Copyright 2005 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 holds the functions used by GDD |
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18 | for the binary AT command library |
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19 +----------------------------------------------------------------------------- |
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20 */ |
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21 |
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22 #define _BAT_ADP_C_ |
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23 |
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24 #include "typedefs.h" |
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25 #include "gdd.h" |
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26 #include "l2p_types.h" |
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27 #include "l2p.h" |
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28 #include "bat.h" |
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29 #include "bat_ctrl.h" |
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30 #include "bat_intern.h" |
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31 |
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32 |
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33 /* |
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34 +----------------------------------------------------------------------------+ |
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35 | PROJECT : MODULE : BINARY AT COMMAND LIBRARY | |
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36 | STATE : code ROUTINE : bat_gdd_receive_data_cb | |
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37 +----------------------------------------------------------------------------+ |
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38 PURPOSE : |
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39 This function is called by GDD when itself received new data from PSI. |
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40 It will pass a GDD buffer (linked list), which has the following speciality: |
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41 - the first list element is reserved and BAT Lib has to follow the next pointer |
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42 to see the "first" user data. |
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43 - such a user data element is passed by BAT Lib to L2P. L2P added at the sender |
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44 side its own header, which maintains possibly fragmentation. If the received |
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45 data have been fragmented by L2P at the sender side, then L2P itself iterates |
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46 over the GDD linked list by calling bat_l2p_get_next_buf_seg() here at receiver side. |
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47 When L2P has reassembled from several segments/list element the complete user data, |
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48 then it passes this complete data to BAT Lib. |
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49 - BUT THERE IS AN ADDITIONAL SCENARIO: |
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50 ACI was not able to send the data to PSI/GDD. Then ACI also builds up a linked list |
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51 until it is able to send to PSI/GDD. |
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52 Every list element represents one response/indication, which itself could be fragmented by L2P. |
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53 Assume the following scenario: |
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54 The connection between ACI and PSI was not available. |
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55 ACI received three indications from the protocol stack, where the second one is too large so that |
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56 L2P must split it into two segments. That means that ACI has built a linked list of four |
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57 elements, which represents three logical data unit. The first list element belongs to the |
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58 first indication, the second and third list element belongs to the second indication |
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59 and the fourth list element belongs to the third indication. |
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60 */ |
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61 |
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62 GDD_RESULT bat_gdd_receive_data_cb (T_GDD_CON_HANDLE con, T_GDD_BUF *buf) |
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63 { |
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64 T_BAT_instance inst_hndl = BAT_BROADCAST_CHANNEL; |
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65 T_BAT_instance_maintain *inst_mt = NULL; |
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66 |
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67 BAT_TRACE_FUNCTION ("bat_gdd_receive_data_cb()"); |
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68 BAT_TRACE_EVENT_P2 ("data received from GDD has length: %d, has c_segment %d", buf->length, buf->c_segment); |
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69 |
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70 /* if the info is for an unknown instance, return OK, GDD can only handle ok and busy, |
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71 so in error cases, GDD_OK will be returned */ |
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72 if (bat_get_instance_from_gdd_handle(con, &inst_hndl, &inst_mt)) |
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73 { |
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74 /* if instance is unknown, BAT Lib ignores the data and returns OK to GDD */ |
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75 BAT_TRACE_ERROR("bat_gdd_receive_data_cb(): Data from unknown instance received!"); |
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76 return (GDD_OK); |
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77 } |
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78 |
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79 /* if the instance is not initialized */ |
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80 if (inst_mt->instance_state EQ BAT_INSTANCE_IDLE) |
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81 { |
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82 /* if instance is not initialized, BAT Lib ignores the data and returns OK to GDD */ |
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83 BAT_TRACE_ERROR ("bat_gdd_receive_data_cb(): Data is received from GDD for an uninitialized instance."); |
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84 return (GDD_OK); |
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85 } |
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86 |
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87 /* check if the receiver buffer is free, if not return a busy signal to GDD, BAT Lib will |
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88 send a ready signal to GDD when the buffer is freed (BAT Lib will receive ctrl info from) |
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89 app, see bat_ctrl() */ |
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90 if (inst_mt->buffer.buf_st EQ BAT_BUF_FILLED) |
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91 { |
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92 BAT_TRACE_EVENT ("bat_gdd_receive_data_cb(): receive buffer is not yet freed!"); |
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93 return (GDD_BUSY); |
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94 } |
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95 |
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96 bat_l2p_receive(inst_hndl, buf); |
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97 |
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98 return (GDD_OK); |
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99 } |
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100 |
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101 |
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102 LOCAL void bat_check_clients_for_busy (T_BAT_instance_maintain *instance, T_BAT_instance inst_hndl) |
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103 { |
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104 T_BAT_client_maintain *clnt_mt = NULL; |
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105 T_BAT_client clnt_hndl = BAT_INVALID_CLIENT_HANDLE; |
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106 int i; |
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107 |
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108 for (i = 0; i < instance->max_client_num; i++) |
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109 { |
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110 clnt_hndl = MAKE_CLNT_HNDL(i, inst_hndl); |
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111 bat_get_client_from_client_handle(clnt_hndl, &clnt_mt); |
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112 switch (clnt_mt->client_state) |
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113 { |
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114 case (BAT_CLIENT_BUSY): |
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115 { |
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116 clnt_mt->signal_cb (clnt_hndl, BAT_READY_RESOURCE); |
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117 bat_change_client_state(clnt_mt, BAT_CLIENT_READY); |
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118 break; |
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119 } |
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120 case (BAT_CLIENT_SENDING_AND_BUSY): |
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121 { |
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122 clnt_mt->signal_cb (clnt_hndl, BAT_READY_RESOURCE); |
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123 bat_change_client_state(clnt_mt, BAT_CLIENT_SENDING); |
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124 break; |
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125 } |
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126 default: |
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127 break; |
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128 } |
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129 } |
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130 } |
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131 |
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132 /* |
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133 +----------------------------------------------------------------------------+ |
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134 | PROJECT : MODULE : BINARY AT COMMAND LIBRARY | |
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135 | STATE : code ROUTINE : bat_gdd_signal_cb | |
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136 +----------------------------------------------------------------------------+ |
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137 PURPOSE : |
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138 This function is called by GDD for signalling of control information between |
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139 BAT Lib and GDD. |
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140 |
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141 */ |
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142 void bat_gdd_signal_cb(T_GDD_CON_HANDLE con, T_GDD_SIGNAL signal) |
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143 { |
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144 T_BAT_instance_maintain *instance = NULL; |
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145 T_BAT_instance inst_hndl = BAT_INVALID_INSTANCE_HANDLE; |
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146 T_BATC_signal ctrl_data; |
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147 T_BATC_max_clients max_clnt; |
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148 |
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149 BAT_TRACE_FUNCTION ("bat_gdd_signal_cb()"); |
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150 BAT_TRACE_EVENT_P1 ("bat_gdd_signal_cb(): con_hndl searched for is %x", con); |
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151 |
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152 if (bat_get_instance_from_gdd_handle(con, &inst_hndl, &instance)) |
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153 { |
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154 BAT_TRACE_ERROR ("bat_gdd_signal_cb(): gdd handle is not found, ignore signal"); |
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155 return; |
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156 } |
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157 |
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158 switch (signal.sig) |
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159 { |
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160 case (GDD_SIGTYPE_CONNECTION_OPENED): |
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161 case (GDD_SIGTYPE_SEND_BUF_AVAILABLE): |
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162 { |
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163 BAT_TRACE_EVENT ("bat_gdd_signal_cb(): GDD_SIGTYPE_SEND_BUF_AVAILABLE received from GDD"); |
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164 |
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165 switch (instance->instance_state) |
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166 { |
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167 case (BAT_INSTANCE_IDLE): |
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168 { |
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169 /* update the instance state */ |
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170 bat_change_instance_state(instance, BAT_INSTANCE_ACTIVATING); |
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171 |
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172 /* BAT sends out the control info to ACI*/ |
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173 ctrl_data.ctrl_params = BATC_MAX_CLIENTS; |
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174 max_clnt.num_clients = instance->max_client_num; |
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175 ctrl_data.params.ptr_max_clients = &max_clnt; |
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176 |
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177 if (bat_send_ctrl_data(inst_hndl, &ctrl_data) NEQ BAT_OK) |
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178 { |
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179 BAT_TRACE_ERROR ("bat_gdd_signal_cb(): BAT new fails to send ctrl info, connection can not be open"); |
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180 |
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181 if (instance->config->adapter.gdd_if.gdd_disconnect(con)) |
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182 { |
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183 BAT_TRACE_ERROR ("bat_gdd_signal_cb(): GDD returns error when disconnecting."); |
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184 } |
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185 instance->instance_signal_cb(BAT_NEW_INSTANCE_FAIL); |
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186 bat_deinit_instance_pointer(inst_hndl); |
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187 } |
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188 break; |
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189 } |
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190 /* flow control for client channels, GDD state has be changed from BUSY to READY */ |
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191 case (BAT_INSTANCE_READY): |
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192 { |
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193 bat_check_clients_for_busy(instance, inst_hndl); |
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194 break; |
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195 } |
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196 /* flow control for instance, bat_open() hasn't been succesful yet */ |
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197 case (BAT_INSTANCE_BUSY): |
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198 { |
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199 instance->instance_signal_cb (BAT_READY_RESOURCE); |
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200 bat_change_instance_state(instance, BAT_INSTANCE_READY); |
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201 break; |
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202 } |
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203 default: |
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204 { |
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205 return; |
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206 } |
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207 } |
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208 break; |
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209 } |
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210 case (GDD_SIGTYPE_CONNECTION_FAILED): |
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211 { |
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212 BAT_TRACE_ERROR("bat_gdd_signal_cb(): GDD_SIGTYPE_CONNECTION_OPENED_FAILED received from GDD"); |
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213 if (instance->config->adapter.gdd_if.gdd_disconnect(con)) |
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214 { |
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215 BAT_TRACE_ERROR ("bat_gdd_signal_cb(): GDD returns error when disconnecting."); |
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216 } |
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217 instance->instance_signal_cb (BAT_NEW_INSTANCE_FAIL); |
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218 bat_deinit_instance_pointer(inst_hndl); |
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219 L2P_Remove (inst_hndl); |
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220 break; |
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221 } |
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222 /* ignore other signal types */ |
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223 default: |
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224 { |
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225 break; |
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226 } |
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227 } |
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228 return; |
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229 } |
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230 |
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231 |