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/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
* (C) 2020-2021 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
*
* 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 <osmocom/core/fsm.h>
#include <osmocom/gsm/abis_nm.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/gsm_data.h>
#include <osmo-bts/bts_trx.h>
#include <osmo-bts/bts.h>
#include <osmo-bts/bts_model.h>
#include <osmo-bts/rsl.h>
#include <osmo-bts/phy_link.h>
#include <osmo-bts/nm_common_fsm.h>
static int gsm_bts_trx_talloc_destructor(struct gsm_bts_trx *trx)
{
unsigned int i;
if (trx->bb_transc.mo.fi) {
osmo_fsm_inst_free(trx->bb_transc.mo.fi);
trx->bb_transc.mo.fi = NULL;
}
if (trx->mo.fi) {
osmo_fsm_inst_free(trx->mo.fi);
trx->mo.fi = NULL;
}
for (i = 0; i < TRX_NR_TS; i++) {
struct gsm_bts_trx_ts *ts = &trx->ts[i];
if (ts->mo.fi) {
osmo_fsm_inst_free(ts->mo.fi);
ts->mo.fi = NULL;
}
}
return 0;
}
/* Initialize all logical channels of the given timeslot */
static void gsm_bts_trx_ts_init_lchan(struct gsm_bts_trx_ts *ts)
{
unsigned int ln;
for (ln = 0; ln < ARRAY_SIZE(ts->lchan); ln++) {
struct gsm_lchan *lchan = &ts->lchan[ln];
gsm_lchan_init(lchan, ts, ln);
}
}
/* Initialize primary timeslots of the given transceiver */
static void gsm_bts_trx_init_ts(struct gsm_bts_trx *trx)
{
unsigned int tn;
for (tn = 0; tn < ARRAY_SIZE(trx->ts); tn++) {
struct gsm_bts_trx_ts *ts = &trx->ts[tn];
ts->trx = trx;
ts->nr = tn;
ts->mo.fi = osmo_fsm_inst_alloc(&nm_chan_fsm, trx, ts,
LOGL_INFO, NULL);
osmo_fsm_inst_update_id_f(ts->mo.fi, "%s-ts%u",
trx->bb_transc.mo.fi->id, ts->nr);
gsm_mo_init(&ts->mo, trx->bts, NM_OC_CHANNEL,
trx->bts->nr, trx->nr, ts->nr);
gsm_bts_trx_ts_init_lchan(ts);
}
}
/* Initialize shadow timeslots of the given transceiver */
void gsm_bts_trx_init_shadow_ts(struct gsm_bts_trx *trx)
{
unsigned int tn;
for (tn = 0; tn < ARRAY_SIZE(trx->ts); tn++) {
struct gsm_bts_trx_ts *ts;
ts = talloc_zero(trx, struct gsm_bts_trx_ts);
OSMO_ASSERT(ts != NULL);
ts->trx = trx;
ts->nr = tn;
/* Link both primary and shadow */
trx->ts[tn].vamos.peer = ts;
ts->vamos.peer = &trx->ts[tn];
ts->vamos.is_shadow = true;
/* Shadow timeslot uses the primary's NM FSM */
OSMO_ASSERT(trx->ts[tn].mo.fi != NULL);
ts->mo.fi = trx->ts[tn].mo.fi;
gsm_bts_trx_ts_init_lchan(ts);
}
}
void gsm_bts_trx_free_shadow_ts(struct gsm_bts_trx *trx)
{
unsigned int tn;
unsigned int ln;
for (tn = 0; tn < ARRAY_SIZE(trx->ts); tn++) {
struct gsm_bts_trx_ts *shadow_ts = trx->ts[tn].vamos.peer;
if (!shadow_ts)
continue;
/* free lchan related mem allocated on the trx object: */
for (ln = 0; ln < ARRAY_SIZE(shadow_ts->lchan); ln++) {
struct gsm_lchan *lchan = &shadow_ts->lchan[ln];
TALLOC_FREE(lchan->name);
}
talloc_free(shadow_ts);
trx->ts[tn].vamos.peer = NULL;
}
}
struct gsm_bts_trx *gsm_bts_trx_alloc(struct gsm_bts *bts)
{
struct gsm_bts_trx *trx = talloc_zero(bts, struct gsm_bts_trx);
if (!trx)
return NULL;
talloc_set_destructor(trx, gsm_bts_trx_talloc_destructor);
trx->bts = bts;
trx->nr = bts->num_trx++;
trx->mo.fi = osmo_fsm_inst_alloc(&nm_rcarrier_fsm, trx, trx,
LOGL_INFO, NULL);
osmo_fsm_inst_update_id_f(trx->mo.fi, "bts%d-trx%d", bts->nr, trx->nr);
gsm_mo_init(&trx->mo, bts, NM_OC_RADIO_CARRIER,
bts->nr, trx->nr, 0xff);
trx->bb_transc.mo.fi = osmo_fsm_inst_alloc(&nm_bb_transc_fsm, trx, &trx->bb_transc,
LOGL_INFO, NULL);
osmo_fsm_inst_update_id_f(trx->bb_transc.mo.fi, "bts%d-trx%d", bts->nr, trx->nr);
gsm_mo_init(&trx->bb_transc.mo, bts, NM_OC_BASEB_TRANSC,
bts->nr, trx->nr, 0xff);
gsm_bts_trx_init_ts(trx);
if (trx->nr != 0)
trx->nominal_power = bts->c0->nominal_power;
/* Default values for the power adjustments */
trx->power_params.ramp.max_initial_pout_mdBm = to_mdB(0);
trx->power_params.ramp.step_size_mdB = to_mdB(2);
trx->power_params.ramp.step_interval_sec = 1;
/* Default (fall-back) Dynamic Power Control parameters */
trx->bs_dpc_params = &bts->bs_dpc_params;
trx->ms_dpc_params = &bts->ms_dpc_params;
/* IF BTS model doesn't DSP/HW support MS Power Control Loop, enable osmo algo by default: */
if (!bts_internal_flag_get(trx->bts, BTS_INTERNAL_FLAG_MS_PWR_CTRL_DSP))
trx->ms_pwr_ctl_soft = true;
llist_add_tail(&trx->list, &bts->trx_list);
return trx;
}
struct gsm_bts_trx *gsm_bts_trx_num(const struct gsm_bts *bts, int num)
{
struct gsm_bts_trx *trx;
if (num >= bts->num_trx)
return NULL;
llist_for_each_entry(trx, &bts->trx_list, list) {
if (trx->nr == num)
return trx;
}
return NULL;
}
static char ts2str[255];
char *gsm_trx_name(const struct gsm_bts_trx *trx)
{
if (!trx)
snprintf(ts2str, sizeof(ts2str), "(trx=NULL)");
else
snprintf(ts2str, sizeof(ts2str), "(bts=%d,trx=%d)",
trx->bts->nr, trx->nr);
return ts2str;
}
const char *gsm_trx_unit_id(struct gsm_bts_trx *trx)
{
static char buf[23];
snprintf(buf, sizeof(buf), "%u/%u/%u", trx->bts->ip_access.site_id,
trx->bts->ip_access.bts_id, trx->nr);
return buf;
}
/* RSL link is established, send status report */
int trx_link_estab(struct gsm_bts_trx *trx)
{
int rc;
LOGPTRX(trx, DSUM, LOGL_INFO, "RSL link up\n");
osmo_fsm_inst_dispatch(trx->mo.fi, NM_EV_RSL_UP, NULL);
osmo_fsm_inst_dispatch(trx->bb_transc.mo.fi, NM_EV_RSL_UP, NULL);
if ((rc = rsl_tx_rf_res(trx)) < 0)
oml_tx_failure_event_rep(&trx->bb_transc.mo, NM_SEVER_MAJOR, OSMO_EVT_MAJ_RSL_FAIL,
"Failed to establish RSL link (%d)", rc);
if (trx == trx->bts->c0)
load_timer_start(trx->bts);
return 0;
}
bool trx_ms_pwr_ctrl_is_osmo(const struct gsm_bts_trx *trx)
{
return trx->ms_pwr_ctl_soft;
}
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