FreeCalypso > hg > fc-magnetite
view src/g23m-gprs/llc/llc_irxs.c @ 239:e0b9c21d7908
AT@TONE and AT@TSTOP audio test commands implemented
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 22 Mar 2017 04:51:29 +0000 |
parents | 219afcfc6250 |
children |
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/* +----------------------------------------------------------------------------- | Project : | Modul : +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : This modul is part of the entity LLC and implements all | functions to handles the incoming process internal signals as | described in the SDL-documentation (IRX-statemachine) +----------------------------------------------------------------------------- */ #ifndef LLC_IRXS_C #define LLC_IRXS_C #endif #define ENTITY_LLC /*==== INCLUDES =============================================================*/ #include "typedefs.h" /* to get Condat data types */ #include "vsi.h" /* to get a lot of macros */ #include "macdef.h" #include "gprs.h" #include "gsm.h" /* to get a lot of macros */ #include "cnf_llc.h" /* to get cnf-definitions */ #include "mon_llc.h" /* to get mon-definitions */ #include "prim.h" /* to get the definitions of used SAP and directions */ #include "llc.h" /* to get the global entity definitions */ #include "llc_irxf.h" /* to get IRX helper functions */ #include "llc_irxl.h" /* to get IRX label functions */ #include "llc_itxs.h" /* to get IRX/ITX signals */ #include "llc_us.h" /* to get U signals */ /*==== CONST ================================================================*/ /*==== LOCAL VARS ===========================================================*/ /*==== PRIVATE FUNCTIONS ====================================================*/ /*==== PUBLIC FUNCTIONS =====================================================*/ /* +------------------------------------------------------------------------------ | Function : sig_llme_irx_assign_req +------------------------------------------------------------------------------ | Description : Handles the internal signal SIG_LLME_IRX_ASSIGN_REQ | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void sig_llme_irx_assign_req (void) { TRACE_ISIG( "sig_llme_irx_assign_req" ); switch (GET_STATE(IRX)) { case IRX_TLLI_UNASSIGNED: /* * Initialise current incarnation. */ irx_init_sapi(); SET_STATE (IRX, IRX_TLLI_ASSIGNED); break; default: TRACE_ERROR( "SIG_LLME_IRX_ASSIGN_REQ unexpected" ); break; } } /* sig_llme_irx_assign_req() */ /* +------------------------------------------------------------------------------ | Function : sig_llme_irx_unassign_req +------------------------------------------------------------------------------ | Description : Handles the internal signal SIG_LLME_IRX_UNASSIGN_REQ | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void sig_llme_irx_unassign_req (void) { TRACE_ISIG( "sig_llme_irx_unassign_req" ); switch (GET_STATE(IRX)) { case IRX_TLLI_UNASSIGNED: /* * Ignore unexpected signal */ break; default: /* * Delete stored I frames and change to state TLLI_UNASSIGNED */ irx_queue_clean(); irx_init_sapi(); SET_STATE (IRX, IRX_TLLI_UNASSIGNED); break; } } /* sig_llme_irx_unassign_req() */ /* +------------------------------------------------------------------------------ | Function : sig_llme_irx_reset_req +------------------------------------------------------------------------------ | Description : Handles the internal signal SIG_LLME_IRX_RESET_REQ | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void sig_llme_irx_reset_req (void) { TRACE_ISIG( "sig_llme_irx_reset_req" ); switch (GET_STATE(IRX)) { case IRX_TLLI_UNASSIGNED: case IRX_TLLI_ASSIGNED: /* * Ignore signal. */ break; case IRX_ABM: case IRX_ABM_BUSY: /* * Delete stored I frames and change to state TLLI_UNASSIGNED */ irx_queue_clean(); irx_init_sapi(); SET_STATE (IRX, IRX_TLLI_ASSIGNED); break; default: TRACE_ERROR( "SIG_LLME_IRX_RESET_REQ unexpected" ); break; } } /* sig_llme_irx_reset_req() */ /* +------------------------------------------------------------------------------ | Function : sig_llme_irx_abmest_req +------------------------------------------------------------------------------ | Description : Handles the internal signal SIG_LLME_IRX_ABMEST_REQ | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void sig_llme_irx_abmest_req (void) { TRACE_ISIG( "sig_llme_irx_abmest_req" ); switch (GET_STATE(IRX)) { case IRX_TLLI_ASSIGNED: /* * Initialize ABM operation */ irx_init_abm(); SET_STATE (IRX, IRX_ABM); break; case IRX_ABM: case IRX_ABM_BUSY: /* * Delete stored I frames and re-initialize ABM operation */ irx_queue_clean(); irx_init_abm(); SET_STATE (IRX, IRX_ABM); break; default: TRACE_ERROR( "SIG_LLME_IRX_ABMEST_REQ unexpected" ); break; } } /* sig_llme_irx_abmest_req() */ /* +------------------------------------------------------------------------------ | Function : sig_llme_irx_abmrel_req +------------------------------------------------------------------------------ | Description : Handles the internal signal SIG_LLME_IRX_ABMREL_REQ | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void sig_llme_irx_abmrel_req (void) { TRACE_ISIG( "sig_llme_irx_abmrel_req" ); switch (GET_STATE(IRX)) { case IRX_ABM: case IRX_ABM_BUSY: /* * Delete stored I frames and end ABM operation */ irx_queue_clean(); irx_init_sapi(); SET_STATE (IRX, IRX_TLLI_ASSIGNED); break; default: /* TRACE_ERROR( "SIG_LLME_IRX_ABMREL_REQ unexpected" ); but ok */ break; } } /* sig_llme_irx_abmrel_req() */ /* +------------------------------------------------------------------------------ | Function : sig_rx_irx_data_ind +------------------------------------------------------------------------------ | Description : Handles the internal signal SIG_RX_IRX_DATA_IND | | Parameters : ll_unitdata_ind - a valid pointer to an LL-UNITDATA-IND | primitive | command - contains the command within the primitive | frame_type - type of PDU (I or S frame) | cr_bit - setting of the CR bit | a_bit - setting of the A bit | ns - send sequence number of the frame | nr - receive sequence number of the frame | +------------------------------------------------------------------------------ */ GLOBAL void sig_rx_irx_data_ind (T_LL_UNITDATA_IND *ll_unitdata_ind, T_COMMAND command, T_PDU_TYPE frame_type, T_BIT cr_bit, T_BIT a_bit, T_FRAME_NUM ns, T_FRAME_NUM nr) { UBYTE state; TRACE_ISIG( "sig_rx_irx_data_ind" ); #ifdef TRACE_EVE { static char* sf[] = { "RR", "ACK", "RNR", "SACK" }; if(command <= 3) { if(frame_type == I_FRAME) { TRACE_4_INFO("got %s I-Frame NS:%d NR:%d A:%d", sf[command], ns, nr, a_bit); } else { TRACE_3_INFO("got %s S-Frame NR:%d A:%d", sf[command], nr, a_bit); } } } #endif llc_data->u->current_tlli = ll_unitdata_ind->tlli; switch ( (state = GET_STATE(IRX)) ) { case IRX_TLLI_ASSIGNED: /* * Send a DM response to any valid command received, that * cannot be handeled (GSM 4.64 Release 6.7.0 Chapter 6.4.1.4) */ TRACE_0_INFO("S- or I/S-Frame received in unexpected state"); PFREE (ll_unitdata_ind); sig_irx_u_no_frame_expected_ind(); break; case IRX_ABM: case IRX_ABM_BUSY: /* * va <= nr <= vs */ if ( FRAME_NUM_VALID (llc_data->sapi->va, nr, llc_data->sapi->vs) ) { /* * frame valid */ irx_ack_all_to ((T_FRAME_NUM)(nr - 1)); switch (command) { case I_RR: /* * Label IRX_RR */ sig_irx_itx_peer_ready_ind(); break; case I_ACK: /* * Label IRX_ACK */ sig_irx_itx_ack_ind (FALSE, nr ); sig_irx_itx_ack_ind (TRUE, (T_FRAME_NUM)(nr + 1)); sig_irx_itx_cnf_l3data_req (); sig_irx_itx_peer_ready_ind (); break; case I_SACK: /* * Label IRX_SACK */ sig_irx_itx_ack_ind (FALSE, nr); irx_handle_sack (nr, ll_unitdata_ind, frame_type); sig_irx_itx_peer_ready_ind(); break; case I_RNR: /* * Label IRX_RNR */ sig_irx_itx_peer_busy_ind(); break; default: TRACE_ERROR( "Unexpected command received" ); break; } } if (frame_type == I_FRAME) { irx_label_if (ll_unitdata_ind, ns, a_bit, state); } else /* S_FRAME */ { if (state == IRX_ABM) { irx_send_ack (a_bit); PFREE (ll_unitdata_ind); } else { irx_send_rnr (); PFREE (ll_unitdata_ind); } } break; default: /* * Free unexpected data */ PFREE (ll_unitdata_ind); TRACE_ERROR( "SIG_RX_IRX_DATA_IND unexpected" ); break; } } /* sig_rx_irx_data_ind() */ /* +------------------------------------------------------------------------------ | Function : sig_itx_irx_s_frame_req +------------------------------------------------------------------------------ | Description : Handles the internal signal SIG_ITX_IRX_S_FRAME_REQ | | Parameters : | +------------------------------------------------------------------------------ */ GLOBAL void sig_itx_irx_s_frame_req (T_ABIT_REQ_TYPE req) { TRACE_ISIG( "sig_itx_irx_s_frame_req" ); switch (GET_STATE(IRX)) { case IRX_ABM: /* * Send an S frame appropriate for the current state */ if ( llc_data->irx->last_ns == NS_EQUAL_VR ) { sig_irx_itx_send_rr_req (req); } else if ( llc_data->irx->last_ns == NS_EQUAL_VR_PLUS_1 ) { sig_irx_itx_send_ack_req (req); } else { T_SACK_BITMAP bitmap; irx_build_sack_bitmap( &bitmap ); sig_irx_itx_send_sack_req (req, &bitmap); } /* SET_STATE (IRX, SAME_STATE); */ break; case IRX_ABM_BUSY: /* * The appropriate S frame in state busy anytime is an RNR */ sig_irx_itx_send_rnr_req (req); /* SET_STATE (IRX, SAME_STATE); */ break; default: TRACE_ERROR( "SIG_ITX_IRX_S_FRAME_REQ unexpected" ); break; } } /* sig_itx_irx_s_frame_req() */