/* +----------------------------------------------------------------------------- | Project : GPRS (8441)| Modul : sndcp_suaf.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 (SUA-statemachine)+----------------------------------------------------------------------------- */ #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_suaf.h" /* to get this file */#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 : sua_get_nsapi+------------------------------------------------------------------------------| Description : find the affected nsapi in sn-PDU.|| Parameters : ll_desc_req*| Returns : the nsapi|+------------------------------------------------------------------------------*/GLOBAL U8 sua_get_nsapi (T_LL_DESC_REQ* ll_desc_req) { T_desc3* desc3 = NULL; U8 * sndcp_header = NULL; /* Get the descriptor describing the memory area with the sndcp header */ desc3 = (T_desc3*)ll_desc_req->desc_list3.first; sndcp_header = (U8*)desc3->buffer; TRACE_FUNCTION( "sua_get_nsapi" ); return (*(sndcp_header + ENCODE_OFFSET_BYTE)) & 0xf;} /* sua_get_nsapi() */#else /* _SNDCP_DTI_2_ *//*+------------------------------------------------------------------------------| Function : sua_get_nsapi+------------------------------------------------------------------------------| Description : find the affected nsapi in sn-PDU.|| Parameters : ll_data_req*| Returns : the nsapi|+------------------------------------------------------------------------------*/GLOBAL UBYTE sua_get_nsapi (T_LL_DATA_REQ* ll_data_req) { USHORT octet_offset = (ll_data_req->sdu.o_buf) >> 3; TRACE_FUNCTION( "sua_get_nsapi" ); return ll_data_req->sdu.buf[octet_offset] & 0xf;} /* sua_get_nsapi() */#endif /* _SNDCP_DTI_2_ *//*+------------------------------------------------------------------------------| Function : sua_init+------------------------------------------------------------------------------| Description : The function sua_init()|| Parameters : |+------------------------------------------------------------------------------*/GLOBAL void sua_init (void){ TRACE_FUNCTION( "sua_init" ); /* * Not initialized: * Members of sn_data_q are not set to NULL. * Members of npdu_number_q are not set to 0. * Members of ll_desc_q are not set to NULL. * Members of ll_data_q are not set to NULL. */ sndcp_data->sua = & sndcp_data->sua_base[0]; INIT_STATE(SUA_0, SUA_LLC_NOT_RECEPTIVE);#ifdef SNDCP_2to1 sndcp_data->sua->sapi = PS_SAPI_3; #else sndcp_data->sua->sapi = LL_SAPI_3; #endif /*SNDCP_2to1*/ sndcp_data->sua = & sndcp_data->sua_base[1]; INIT_STATE(SUA_1, SUA_LLC_NOT_RECEPTIVE);#ifdef SNDCP_2to1 sndcp_data->sua->sapi = PS_SAPI_5; #else sndcp_data->sua->sapi = LL_SAPI_5; #endif /*SNDCP_2to1*/ sndcp_data->sua = & sndcp_data->sua_base[2]; INIT_STATE(SUA_2, SUA_LLC_NOT_RECEPTIVE);#ifdef SNDCP_2to1 sndcp_data->sua->sapi = PS_SAPI_9; #else sndcp_data->sua->sapi = LL_SAPI_9; #endif /*SNDCP_2to1*/ sndcp_data->sua = & sndcp_data->sua_base[3]; INIT_STATE(SUA_3, SUA_LLC_NOT_RECEPTIVE);#ifdef SNDCP_2to1 sndcp_data->sua->sapi = PS_SAPI_11; #else sndcp_data->sua->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->sua = & sndcp_data->sua_base[sapi_index]; sndcp_data->sua->n201_i = N201_I_DEFAULT; sndcp_data->sua->sn_data_q_read = 0; sndcp_data->sua->sn_data_q_write = 0;#ifdef _SNDCP_DTI_2_ sndcp_data->sua->ll_desc_q_read = 0; sndcp_data->sua->ll_desc_q_write = 0;#else /* _SNDCP_DTI_2_ */ sndcp_data->sua->ll_data_q_read = 0; sndcp_data->sua->ll_data_q_write = 0;#endif /* _SNDCP_DTI_2_ */ sndcp_data->sua->first_seg_info = NULL; sndcp_data->sua->cia_state = CIA_IDLE; } }} /* sua_init() *//*+------------------------------------------------------------------------------| Function : sua_mark_segment+------------------------------------------------------------------------------| Description : The function sua_mark_segment()|| Parameters : N-PDU number, NSAPI, LL_DESC_REQ in which the reference has to be set.| Pre : The "correct" sua instance is activated and | sndcp_data->sua->segment_number is the segment number of the| current segment.|+------------------------------------------------------------------------------*/GLOBAL void sua_mark_segment (UBYTE npdu_number, UBYTE nsapi){ T_SEG_INFO* seg_info = NULL; TRACE_FUNCTION( "sua_mark_segment" ); /* * Add new seg_info to the list. */ if (sndcp_data->sua->first_seg_info == NULL) { MALLOC(seg_info, sizeof(T_SEG_INFO)); /* * The list has been empty. */ sndcp_data->sua->first_seg_info = seg_info; /* * First segment. */ seg_info->number_of_segments = 1; /* * Reset the confirm mask. */ seg_info->cnf_segments = 0; seg_info->npdu_number = npdu_number; seg_info->next = NULL; seg_info->nsapi = nsapi; } else { /* * There are already some seg_infos. Find the seg_info for the given N-PDU. * number and NSAPI or create a new one. */ /* * Are N-PDU number and NSAPI different? */ BOOL different = TRUE; BOOL end = FALSE; T_SEG_INFO* help = sndcp_data->sua->first_seg_info; while(!end && different) { if (nsapi == help->nsapi && npdu_number == help->npdu_number) { different = FALSE; } else { if (help->next == NULL) { end = TRUE; } else { help = help->next; } } } if (different) { /* * A seg_info with same NSAPI and N-PDU number has not been found. * Create a new one. */ MALLOC(seg_info, sizeof(T_SEG_INFO)); /* * First segment. */ seg_info->number_of_segments = 1; /* * Reset the confirm mask. */ seg_info->cnf_segments = 0; seg_info->npdu_number = npdu_number; seg_info->next = NULL; seg_info->nsapi = nsapi; /* * Add the new seg_info to the list. */ help->next = seg_info; } else { /* * A seg_info with same NSAPI and N-PDU number has been found. * Use this one. */ help->number_of_segments++; } }} /* sua_mark_segment() *//*+------------------------------------------------------------------------------| Function : sua_next_sn_data_req+------------------------------------------------------------------------------| Description : If queue with sn_data_req is| not empty, send SIG_SUA_CIA_DATA_REQ with next prim from sn_data_req queue|| Parameters : sapi| Pre : cia_state == CIA_IDLE|+------------------------------------------------------------------------------*/GLOBAL void sua_next_sn_data_req (UBYTE sapi) { TRACE_FUNCTION( "sua_next_sn_data_req" ); if (sndcp_data->sua->sn_data_q_write != sndcp_data->sua->sn_data_q_read) { /* * Get sn_data_req from queue. */ T_SN_DATA_REQ* sn_data_req = sndcp_data->sua->sn_data_q[sndcp_data->sua->sn_data_q_read]; /* * Get npdu_number from queue. */ UBYTE npdu_num = sndcp_data->sua->npdu_number_q[sndcp_data->sua->sn_data_q_read]; UBYTE nsapi = sn_data_req->nsapi; sndcp_data->sua->sn_data_q[sndcp_data->sua->sn_data_q_read] = NULL; sndcp_data->sua->sn_data_q_read = (sndcp_data->sua->sn_data_q_read + 1) % SN_DATA_Q_LEN; /* * Cia is now busy. Send data. */ sndcp_data->sua->cia_state = CIA_BUSY; sig_sua_cia_cia_comp_req(sn_data_req, npdu_num, nsapi, sapi); } else if (sndcp_data->sua->cia_state == CIA_IDLE) { UBYTE nsapi = 0; for (nsapi = 0; nsapi < SNDCP_NUMBER_OF_NSAPIS; nsapi++) { UBYTE used_sapi = 0; BOOL used = FALSE; BOOL ack = FALSE; sndcp_is_nsapi_used(nsapi, &used); if (used) { sndcp_get_nsapi_sapi(nsapi, &used_sapi); sndcp_get_nsapi_ack(nsapi, &ack); if (used_sapi == sapi && ack) { sig_sua_nu_ready_ind(nsapi); } } } }} /* sua_next_sn_data_req() */