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/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
* (C) 2020 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/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>
struct gsm_bts_trx *gsm_bts_trx_alloc(struct gsm_bts *bts)
{
struct gsm_bts_trx *trx = talloc_zero(bts, struct gsm_bts_trx);
int k;
if (!trx)
return NULL;
trx->bts = bts;
trx->nr = bts->num_trx++;
gsm_mo_init(&trx->mo, bts, NM_OC_RADIO_CARRIER,
bts->nr, trx->nr, 0xff);
gsm_mo_init(&trx->bb_transc.mo, bts, NM_OC_BASEB_TRANSC,
bts->nr, trx->nr, 0xff);
for (k = 0; k < TRX_NR_TS; k++) {
struct gsm_bts_trx_ts *ts = &trx->ts[k];
int l;
ts->trx = trx;
ts->nr = k;
ts->pchan = GSM_PCHAN_NONE;
ts->dyn.pchan_is = GSM_PCHAN_NONE;
ts->dyn.pchan_want = GSM_PCHAN_NONE;
ts->tsc = -1;
gsm_mo_init(&ts->mo, bts, NM_OC_CHANNEL,
bts->nr, trx->nr, ts->nr);
for (l = 0; l < TS_MAX_LCHAN; l++) {
struct gsm_lchan *lchan;
char *name;
lchan = &ts->lchan[l];
lchan->ts = ts;
lchan->nr = l;
lchan->type = GSM_LCHAN_NONE;
name = gsm_lchan_name_compute(lchan);
lchan->name = talloc_strdup(trx, name);
INIT_LLIST_HEAD(&lchan->sapi_cmds);
}
}
if (trx->nr != 0)
trx->nominal_power = bts->c0->nominal_power;
llist_add_tail(&trx->list, &bts->trx_list);
return trx;
}
/* Initialize the TRX data structures, called before config
* file reading */
int bts_trx_init(struct gsm_bts_trx *trx)
{
/* initialize bts data structure */
struct trx_power_params *tpp = &trx->power_params;
int rc, i;
for (i = 0; i < ARRAY_SIZE(trx->ts); i++) {
struct gsm_bts_trx_ts *ts = &trx->ts[i];
int k;
for (k = 0; k < ARRAY_SIZE(ts->lchan); k++) {
struct gsm_lchan *lchan = &ts->lchan[k];
INIT_LLIST_HEAD(&lchan->dl_tch_queue);
}
}
/* Default values for the power adjustments */
tpp->ramp.max_initial_pout_mdBm = to_mdB(0);
tpp->ramp.step_size_mdB = to_mdB(2);
tpp->ramp.step_interval_sec = 1;
/* 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;
rc = bts_model_trx_init(trx);
if (rc < 0) {
llist_del(&trx->list);
return rc;
}
return 0;
}
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)
{
struct e1inp_sign_link *link = trx->rsl_link;
int rc;
LOGPTRX(trx, DSUM, LOGL_INFO, "RSL link %s\n",
link ? "up" : "down");
trx_operability_update(trx);
if (link)
rc = rsl_tx_rf_res(trx);
else
rc = bts_model_trx_deact_rf(trx);
if (rc < 0) {
oml_tx_failure_event_rep(&trx->bb_transc.mo, NM_SEVER_MAJOR, OSMO_EVT_MAJ_RSL_FAIL,
link ?
"Failed to establish RSL link (%d)" :
"Failed to deactivate RF (%d)", rc);
}
return 0;
}
/* set the availability of the TRX based on internal state (RSL + phy link) */
void trx_operability_update(struct gsm_bts_trx *trx)
{
int tn;
enum abis_nm_op_state op_st;
enum abis_nm_avail_state avail_st;
struct phy_instance *pinst = trx_phy_instance(trx);
op_st = (trx->rsl_link && phy_link_state_get(pinst->phy_link) == PHY_LINK_CONNECTED) ?
NM_OPSTATE_ENABLED : NM_OPSTATE_DISABLED;
avail_st = (op_st == NM_OPSTATE_ENABLED) ? NM_AVSTATE_OK : NM_AVSTATE_NOT_INSTALLED;
LOGPTRX(trx, DSUM, LOGL_INFO, "Setting operative = %s\n", abis_nm_opstate_name(op_st));
oml_mo_state_chg(&trx->mo, op_st, avail_st);
oml_mo_state_chg(&trx->bb_transc.mo, -1, avail_st);
for (tn = 0; tn < ARRAY_SIZE(trx->ts); tn++)
oml_mo_state_chg(&trx->ts[tn].mo, op_st, avail_st);
}
bool trx_ms_pwr_ctrl_is_osmo(const struct gsm_bts_trx *trx)
{
return trx->ms_pwr_ctl_soft;
}
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