/* +----------------------------------------------------------------------------- | Project : GPRS (8441)| Modul : sndcp_suf.c+----------------------------------------------------------------------------- | 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 SNDCP and implements all | procedures and functions as described in the | SDL-documentation (SU-statemachine)+----------------------------------------------------------------------------- */ /*---- HISTORY --------------------------------------------------------------*/#define ENTITY_SNDCP/*==== INCLUDES =============================================================*/#include "typedefs.h" /* to get Condat data types */#include "vsi.h" /* to get a lot of macros */#include "macdef.h"#include "prim.h" /* to get the definitions of used SAP and directions */#include "dti.h"#include "sndcp.h" /* to get the global entity definitions */#include "sndcp_f.h" /* to get the functions to access the global arrays*/#include "sndcp_nus.h" /* to get signals to service nu */#include "sndcp_cias.h" /* to get signals to service cia *//*==== CONST ================================================================*//*==== LOCAL VARS ===========================================================*//*==== PRIVATE FUNCTIONS ====================================================*//*==== PUBLIC FUNCTIONS =====================================================*/#ifdef _SNDCP_DTI_2_/*+------------------------------------------------------------------------------| Function : su_get_nsapi+------------------------------------------------------------------------------| Description : finde the affected nsapi in sn-PDU.|| Parameters : ll_unitdata_req*| Returns : the nsapi|+------------------------------------------------------------------------------*/GLOBAL U8 su_get_nsapi (T_LL_UNITDESC_REQ* ll_unitdesc_req) { T_desc3* desc3 = NULL; U8 * sndcp_header = NULL; /* Get the descriptor describing the memory area with the sndcp header */ desc3 = (T_desc3*)ll_unitdesc_req->desc_list3.first; sndcp_header = (U8*)desc3->buffer; TRACE_FUNCTION( "su_get_nsapi" ); return (*(sndcp_header + ENCODE_OFFSET_BYTE)) & 0xf;} /* sua_get_nsapi() */#else /* _SNDCP_DTI_2_ *//*+------------------------------------------------------------------------------| Function : su_get_nsapi+------------------------------------------------------------------------------| Description : finde the affected nsapi in sn-PDU.|| Parameters : ll_unitdata_req*| Returns : the nsapi|+------------------------------------------------------------------------------*/GLOBAL UBYTE su_get_nsapi (T_LL_UNITDATA_REQ* ll_unitdata_req) { USHORT octet_offset = (ll_unitdata_req->sdu.o_buf) >> 3; TRACE_FUNCTION( "su_get_nsapi" ); return ll_unitdata_req->sdu.buf[octet_offset] & 0xf;} /* su_get_nsapi() */#endif /* _SNDCP_DTI_2_ *//*+------------------------------------------------------------------------------| Function : su_init+------------------------------------------------------------------------------| Description : The function su_init() .... || Parameters : |+------------------------------------------------------------------------------*/GLOBAL void su_init (void){ TRACE_FUNCTION( "su_init" ); /* * Not initialized: * Members of sn_unitdata_q are not set to NULL. * Members of npdu_number_q are not set to 0. * Members of ll_unitdata_q are not set to NULL. */ sndcp_data->su = & sndcp_data->su_base[0]; INIT_STATE(SU_0, SU_LLC_NOT_RECEPTIVE);#ifdef SNDCP_2to1 sndcp_data->su->sapi = PS_SAPI_3; #else sndcp_data->su->sapi = LL_SAPI_3; #endif /*SNDCP_2to1*/ sndcp_data->su = & sndcp_data->su_base[1]; INIT_STATE(SU_1, SU_LLC_NOT_RECEPTIVE);#ifdef SNDCP_2to1 sndcp_data->su->sapi = PS_SAPI_5; #else sndcp_data->su->sapi = LL_SAPI_5; #endif /*SNDCP_2to1*/ sndcp_data->su = & sndcp_data->su_base[2]; INIT_STATE(SU_2, SU_LLC_NOT_RECEPTIVE);#ifdef SNDCP_2to1 sndcp_data->su->sapi = PS_SAPI_9; #else sndcp_data->su->sapi = LL_SAPI_9; #endif /*SNDCP_2to1*/ sndcp_data->su = & sndcp_data->su_base[3]; INIT_STATE(SU_3, SU_LLC_NOT_RECEPTIVE);#ifdef SNDCP_2to1 sndcp_data->su->sapi = PS_SAPI_11; #else sndcp_data->su->sapi = LL_SAPI_11; #endif /*SNDCP_2to1*/ { UBYTE sapi_index = 0; for (sapi_index = 0; sapi_index < SNDCP_NUMBER_OF_SAPIS; sapi_index++) { sndcp_data->su = & sndcp_data->su_base[sapi_index]; sndcp_data->su->n201_u = N201_U_DEFAULT; sndcp_data->su->sn_unitdata_q_read = 0; sndcp_data->su->sn_unitdata_q_write = 0;#ifdef _SNDCP_DTI_2_ sndcp_data->su->ll_unitdesc_q_read = 0; sndcp_data->su->ll_unitdesc_q_write = 0;#else /* _SNDCP_DTI_2_ */ sndcp_data->su->ll_unitdata_q_read = 0; sndcp_data->su->ll_unitdata_q_write = 0;#endif /* _SNDCP_DTI_2_ */ sndcp_data->su->cia_state = CIA_IDLE; } }} /* su_init() *//*+------------------------------------------------------------------------------| Function : su_next_sn_unitdata_req+------------------------------------------------------------------------------| Description : If queue with sn_unitdata_req is| not empty, send SIG_SU_CIA_DATA_REQ with next prim from sn_unitdata_req queue|| Parameters : sapi| Pre : cia_state == CIA_IDLE|+------------------------------------------------------------------------------*/GLOBAL void su_next_sn_unitdata_req (UBYTE sapi) { TRACE_FUNCTION( "su_next_sn_unitdata_req" ); if (sndcp_data->su->sn_unitdata_q_write != sndcp_data->su->sn_unitdata_q_read) { /* * Get sn_unitdata_req from queue. */ T_SN_UNITDATA_REQ* sn_unitdata_req = sndcp_data->su->sn_unitdata_q[sndcp_data->su->sn_unitdata_q_read]; /* * Get npdu_number from queue. */ USHORT npdu_num = sndcp_data->su->npdu_number_q[sndcp_data->su->sn_unitdata_q_read]; UBYTE nsapi = sn_unitdata_req->nsapi; sndcp_data->su->sn_unitdata_q[sndcp_data->su->sn_unitdata_q_read] = NULL; sndcp_data->su->sn_unitdata_q_read = (sndcp_data->su->sn_unitdata_q_read + 1 ) % SN_UNITDATA_Q_LEN; /* * Cia is now busy. Send data. */ sndcp_data->su->cia_state = CIA_BUSY; sig_su_cia_cia_comp_req(sn_unitdata_req, npdu_num, nsapi, sapi); } else if (sndcp_data->su->cia_state == CIA_IDLE) { UBYTE nsapi = 0; for (nsapi = 0; nsapi < SNDCP_NUMBER_OF_NSAPIS; nsapi++) { UBYTE used_sapi = 0; BOOL used = FALSE; sndcp_is_nsapi_used(nsapi, &used); if (used) { sndcp_get_nsapi_sapi(nsapi, &used_sapi); if (used_sapi == sapi) { sig_su_nu_ready_ind(nsapi); } } } }} /* su_next_sn_unitdata_req() */