annotate src/g23m-gprs/llc/llc_itxt.c @ 216:2be687f4476c default tip

l1_init.c: sync with Tourmaline: L1 recovery ABB init fix
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 31 Oct 2022 01:23:14 +0000
parents d393cd9bb723
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project :
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4 | Modul :
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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 is part of the entity LLC and implements all
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18 | functions to handles the incoming primitives as described in
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19 | the SDL-documentation (T201-statemachine)
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20 +-----------------------------------------------------------------------------
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21 */
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22
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23 #ifndef LLC_ITXT_C
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24 #define LLC_ITXT_C
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25 #endif
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26
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27 #define ENTITY_LLC
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28
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29 /*==== INCLUDES =============================================================*/
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30
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31 #include "typedefs.h" /* to get Condat data types */
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32 #include "vsi.h" /* to get a lot of macros */
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33 #include "macdef.h"
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34 #include "gprs.h"
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35 #include "gsm.h" /* to get a lot of macros */
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36 #include "cnf_llc.h" /* to get cnf-definitions */
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37 #include "mon_llc.h" /* to get mon-definitions */
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38 #include "prim.h" /* to get the definitions of used SAP and directions */
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39 #include "llc.h" /* to get the global entity definitions */
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40
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41 #include "llc_itxf.h" /* to get local function definitions */
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42 #include "llc_llmes.h" /* to get LLME signal definitions */
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43 #include "llc_irxs.h" /* to get ITX signal definitions */
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44
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45
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46 /*==== CONST ================================================================*/
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47
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48 /*==== LOCAL VARS ===========================================================*/
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49
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50 /*==== PRIVATE FUNCTIONS ====================================================*/
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51
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52 /*==== PUBLIC FUNCTIONS =====================================================*/
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53
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54
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55 /*
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56 +------------------------------------------------------------------------------
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57 | Function : itx_T201_start
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58 +------------------------------------------------------------------------------
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59 | Description : This procedure starts timer T201 for the current SAPI.
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60 |
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61 | Parameters :
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62 +------------------------------------------------------------------------------
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63 */
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64 GLOBAL void itx_T201_start (T_TIME length)
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65 {
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66 TRACE_FUNCTION( "itx_T201_start" );
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67
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68 /*
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69 * Start timer T201 for the current SAPI.
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70 */
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71 #ifdef _SIMULATION_
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72 /*
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73 * In simulation mode, use always a timer value of 5 seconds.
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74 */
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75 vsi_t_start (VSI_CALLER
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76 (USHORT)(TIMER_T201_BASE + IMAP(llc_data->current_sapi)), 5000);
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77 #else
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78 vsi_t_start (VSI_CALLER
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79 (USHORT)(TIMER_T201_BASE + IMAP(llc_data->current_sapi)), length);
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80 #endif /* _SIMULATION_ */
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81
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82 return;
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83 } /* itx_T201_start() */
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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 | Function : itx_T201_stop
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89 +------------------------------------------------------------------------------
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90 | Description : This procedure stops timer T201 for the current SAPI.
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91 |
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92 | Parameters :
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93 +------------------------------------------------------------------------------
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94 */
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95 GLOBAL void itx_T201_stop (void)
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96 {
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97 TRACE_FUNCTION( "itx_T201_stop" );
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98
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99 /*
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100 * Stops timer T201 for the current SAPI.
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101 */
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102 vsi_t_stop (VSI_CALLER
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103 (USHORT)(TIMER_T201_BASE + IMAP(llc_data->current_sapi)));
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104
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105 return;
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106 } /* itx_T201_stop() */
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107
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108
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109
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110 /*
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111 +------------------------------------------------------------------------------
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112 | Function : itx_timer_t201
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113 +------------------------------------------------------------------------------
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114 | Description : Handles expiry of timer T201. This function is called from
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115 | pei_timeout().
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116 |
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117 | Parameters : sapi - indicates the SAPI for which the timer has expired
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118 |
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119 +------------------------------------------------------------------------------
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120 */
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121 GLOBAL void itx_timer_t201 (UBYTE sapi)
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122 {
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123 TRACE_FUNCTION( "itx_timer_t201" );
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124
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125 TRACE_0_INFO("T201 EXPIRED" );
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126
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127 SWITCH_LLC (sapi);
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128
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129 switch (GET_STATE(ITX))
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130 {
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131 case ITX_ABM:
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132 /*
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133 * If a frame is associated with T201, increment the
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134 * retransmission counter and if below N200, restart
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 * T201. Else initate the ABM-Re-Establish procedure.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 if ( llc_data->itx->t201_entry != NULL)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 llc_data->itx->t201_entry->status = IQ_RETR_FRAME;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 if ( llc_data->itx->t201_entry->n_retr <= *(llc_data->n200) )
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 TIMERSTART (T201, llc_data->t200->length);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 itx_send_next_frame (ABIT_SET_REQ);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 }
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 else
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 * Initate ABM Re-Establish procedure. The state change
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 * will be done by the reestablish procedure later.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 sig_itx_llme_reest_ind (LLGMM_ERRCS_ACK_NO_PEER_RES_REEST);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 /* SET_STATE (ITX, SAME_STATE); */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 break;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 case ITX_ABM_PEER_BUSY:
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 * If the Peer busy retransmission counter is below N200
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 * restart T201 and send an appropriated S frame. Else
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 * initate the ABM-Re-Establish procedure.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 if ( llc_data->itx->n_pb_retr < *(llc_data->n200) )
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 TIMERSTART (T201, llc_data->t200->length);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 sig_itx_irx_s_frame_req (ABIT_SET_REQ);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 llc_data->itx->n_pb_retr += 1;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 else
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 {
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 sig_itx_llme_reest_ind (LLGMM_ERRCS_PEER_BUSY_REEST);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 }
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 /* SET_STATE (ITX, SAME_STATE); */
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 break;
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 default:
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178 TRACE_ERROR( "T201 unexpected" );
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 break;
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 }
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181
d393cd9bb723 src/g23m-*: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 } /* itx_timer_t201() */