152 lines
3.8 KiB
C++
152 lines
3.8 KiB
C++
/**@file Osmocom Logical Channel. */
|
|
|
|
/*
|
|
* Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
|
|
* Copyright 2011 Harald Welte <laforge@gnumonks.org>
|
|
*
|
|
* This software is distributed under the terms of the GNU Affero Public License.
|
|
* See the COPYING file in the main directory for details.
|
|
*
|
|
* This use of this software may be subject to additional restrictions.
|
|
* See the LEGAL file in the main directory for details.
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "OsmoLogicalChannel.h"
|
|
#include "OsmoThreadMuxer.h"
|
|
|
|
using namespace std;
|
|
using namespace GSM;
|
|
|
|
|
|
ARFCNManager *OsmoTS::getARFCNmgr()
|
|
{
|
|
const OsmoTRX *trx = getTRX();
|
|
TransceiverManager *trxmgr = trx->getTRXmgr();
|
|
return trxmgr->ARFCN(trx->getTN());
|
|
}
|
|
|
|
OsmoTS::OsmoTS(OsmoTRX &trx, unsigned int ts_nr, unsigned comb)
|
|
{
|
|
assert(ts_nr < 8);
|
|
mComb = comb;
|
|
mTSnr = ts_nr;
|
|
mTRX = &trx;
|
|
mNLchan = 0;
|
|
|
|
/* configure the radio timeslot combination */
|
|
TransceiverManager *trxmgr = trx.getTRXmgr();
|
|
ARFCNManager *radio = trxmgr->ARFCN(trx.getTN());
|
|
radio->setSlot(ts_nr, comb);
|
|
}
|
|
|
|
|
|
void OsmoLogicalChannel::open()
|
|
{
|
|
LOG(INFO);
|
|
if (mSACCHL1)
|
|
mSACCHL1->open();
|
|
if (mL1)
|
|
mL1->open();
|
|
}
|
|
|
|
|
|
void OsmoLogicalChannel::connect()
|
|
{
|
|
/* connect L1 at lower end of OsmoSAPMux */
|
|
mMux.downstream(mL1);
|
|
|
|
/* Tell L1FEC that the SAPMux is its upstream */
|
|
if (mL1)
|
|
mL1->upstream(&mMux);
|
|
}
|
|
|
|
/* This is where OsmoSAPMux inputs data received from L1FEC */
|
|
void OsmoLogicalChannel::writeLowSide(const L2Frame& frame)
|
|
{
|
|
/* simply pass it through to the TreadMuxer, including
|
|
* a reference to us (the logical channel) */
|
|
mTM->writeLowSide(frame, this);
|
|
}
|
|
|
|
ostream& GSM::operator<<(ostream& os, const OsmoLogicalChannel& lchan)
|
|
{
|
|
unsigned int trx_nr, ts_nr, ss_nr;
|
|
trx_nr = lchan.TS()->getTRX()->getTN();
|
|
ts_nr = lchan.TS()->getTSnr();
|
|
ss_nr = lchan.SSnr();
|
|
|
|
/* Just dump something like "(TRX,TS,SS)" identifying the lchan */
|
|
os << "(" << trx_nr << "," << ts_nr << "," << ss_nr << ")";
|
|
}
|
|
|
|
|
|
void OsmoLogicalChannel::downstream(ARFCNManager* radio)
|
|
{
|
|
assert(mL1);
|
|
/* tell the L1 to which ARFCNmanager to transmit */
|
|
mL1->downstream(radio);
|
|
|
|
/* If we have a SACCH, configure it the same way */
|
|
if (mSACCHL1)
|
|
mSACCHL1->downstream(radio);
|
|
}
|
|
|
|
OsmoCCCHLchan::OsmoCCCHLchan(OsmoTS *osmo_ts, unsigned int ss_nr)
|
|
:OsmoNDCCHLogicalChannel(osmo_ts, ss_nr)
|
|
{
|
|
mL1 = new CCCHL1FEC(gCCCH[ss_nr]);
|
|
connect();
|
|
}
|
|
|
|
|
|
OsmoSDCCHLchan::OsmoSDCCHLchan(OsmoTS *osmo_ts, unsigned int ss_nr)
|
|
:OsmoLogicalChannel(osmo_ts, ss_nr)
|
|
{
|
|
unsigned int ts_nr = osmo_ts->getTSnr();
|
|
const CompleteMapping *wMapping = NULL;
|
|
|
|
/* we have to distinguish SDCCH/4 and SDCCH/8 mappings */
|
|
switch (osmo_ts->getComb()) {
|
|
case 5:
|
|
wMapping = &gSDCCH4[ss_nr];
|
|
break;
|
|
case 7:
|
|
wMapping = &gSDCCH8[ss_nr];
|
|
break;
|
|
default:
|
|
assert(0);
|
|
}
|
|
mL1 = new SDCCHL1FEC(ts_nr, wMapping->LCH());
|
|
mSACCHL1 = new SACCHL1FEC(ts_nr, wMapping->SACCH());
|
|
connect();
|
|
}
|
|
|
|
OsmoTCHFACCHLchan::OsmoTCHFACCHLchan(OsmoTS *osmo_ts, unsigned int ss_nr)
|
|
:OsmoLogicalChannel(osmo_ts, ss_nr)
|
|
{
|
|
unsigned int ts_nr = osmo_ts->getTSnr();
|
|
mL1 = new TCHFACCHL1FEC(ts_nr, gTCHF_T[ts_nr].LCH());
|
|
mSACCHL1 = new SACCHL1FEC(ts_nr, gTCHF_T[ts_nr].SACCH());
|
|
connect();
|
|
}
|
|
|
|
|
|
// vim: ts=4 sw=4
|
|
|