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/* NM Radio Carrier FSM */
/* (C) 2020 by sysmocom - s.m.f.c. GmbH <info@sysmocom.de>
* Author: Pau Espin Pedrol <pespin@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 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 <errno.h>
#include <unistd.h>
#include <inttypes.h>
#include <osmocom/core/fsm.h>
#include <osmocom/core/tdef.h>
#include <osmocom/gsm/protocol/gsm_12_21.h>
#include <osmo-bts/logging.h>
#include <osmo-bts/gsm_data.h>
#include <osmo-bts/bts_model.h>
#include <osmo-bts/bts.h>
#include <osmo-bts/rsl.h>
#include <osmo-bts/nm_common_fsm.h>
#include <osmo-bts/phy_link.h>
#define X(s) (1 << (s))
#define nm_bb_transc_fsm_state_chg(fi, NEXT_STATE) \
osmo_fsm_inst_state_chg(fi, NEXT_STATE, 0, 0)
//////////////////////////
// FSM STATE ACTIONS
//////////////////////////
static void st_op_disabled_notinstalled_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_state)
{
struct gsm_bts_bb_trx *bb_transc = (struct gsm_bts_bb_trx *)fi->priv;
bb_transc->mo.opstart_success = false;
oml_mo_state_chg(&bb_transc->mo, NM_OPSTATE_DISABLED, NM_AVSTATE_NOT_INSTALLED);
}
static void st_op_disabled_notinstalled(struct osmo_fsm_inst *fi, uint32_t event, void *data)
{
struct gsm_bts_bb_trx *bb_transc = (struct gsm_bts_bb_trx *)fi->priv;
struct gsm_bts_trx *trx = gsm_bts_bb_trx_get_trx(bb_transc);
int i;
switch (event) {
case NM_EV_SW_ACT:
/* For VAMOS shadow TRXs, do not send the initial Software Activated Report. The primary TRX's Software
* Activated Report implies the shadow TRX. (The main reason is to not confuse non-osmocom BSCs into
* thinking a shadow TRX were an independent primary TRX.) */
if (!osmo_bts_has_feature(trx->bts->features, BTS_FEAT_VAMOS)
|| TRX_PRIMARY(trx) == trx)
oml_mo_tx_sw_act_rep(&bb_transc->mo);
nm_bb_transc_fsm_state_chg(fi, NM_BBTRANSC_ST_OP_DISABLED_OFFLINE);
for (i = 0; i < TRX_NR_TS; i++) {
struct gsm_bts_trx_ts *ts = &trx->ts[i];
osmo_fsm_inst_dispatch(ts->mo.fi, NM_EV_BBTRANSC_INSTALLED, NULL);
}
return;
case NM_EV_RSL_UP:
return;
case NM_EV_RSL_DOWN:
return;
case NM_EV_PHYLINK_UP:
return;
case NM_EV_PHYLINK_DOWN:
return;
case NM_EV_DISABLE:
return;
default:
OSMO_ASSERT(0);
}
}
static void st_op_disabled_offline_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_state)
{
struct gsm_bts_bb_trx *bb_transc = (struct gsm_bts_bb_trx *)fi->priv;
struct gsm_bts_trx *trx = gsm_bts_bb_trx_get_trx(bb_transc);
int i;
bb_transc->mo.opstart_success = false;
oml_mo_state_chg(&bb_transc->mo, NM_OPSTATE_DISABLED, NM_AVSTATE_OFF_LINE);
if (prev_state == NM_BBTRANSC_ST_OP_ENABLED) {
for (i = 0; i < TRX_NR_TS; i++) {
struct gsm_bts_trx_ts *ts = &trx->ts[i];
osmo_fsm_inst_dispatch(ts->mo.fi, NM_EV_BBTRANSC_DISABLED, NULL);
}
}
}
static void st_op_disabled_offline(struct osmo_fsm_inst *fi, uint32_t event, void *data)
{
struct gsm_bts_bb_trx *bb_transc = (struct gsm_bts_bb_trx *)fi->priv;
struct gsm_bts_trx *trx = gsm_bts_bb_trx_get_trx(bb_transc);
bool phy_state_connected;
bool rsl_link_connected;
switch (event) {
case NM_EV_OPSTART_ACK:
bb_transc->mo.opstart_success = true;
oml_mo_opstart_ack(&bb_transc->mo);
break; /* check statechg below */
case NM_EV_OPSTART_NACK:
bb_transc->mo.opstart_success = false;
oml_mo_opstart_nack(&bb_transc->mo, (int)(intptr_t)data);
return;
case NM_EV_RSL_UP:
break; /* check statechg below */
case NM_EV_RSL_DOWN:
return;
case NM_EV_PHYLINK_UP:
break; /* check statechg below */
case NM_EV_PHYLINK_DOWN:
return;
case NM_EV_DISABLE:
return;
default:
OSMO_ASSERT(0);
}
if (trx->bts->variant != BTS_OSMO_OMLDUMMY) { /* In OMLDUMMY, phy=NULL */
struct phy_instance *pinst = trx_phy_instance(trx);
phy_state_connected = phy_link_state_get(pinst->phy_link) == PHY_LINK_CONNECTED;
rsl_link_connected = !!trx->rsl_link;
} else {
phy_state_connected = true;
rsl_link_connected = true;
}
if (rsl_link_connected && phy_state_connected &&
bb_transc->mo.opstart_success) {
nm_bb_transc_fsm_state_chg(fi, NM_BBTRANSC_ST_OP_ENABLED);
} else {
LOGPFSML(fi, LOGL_INFO, "Delay switch to operative state Enabled, wait for:%s%s%s\n",
rsl_link_connected ? "": " rsl",
phy_state_connected ? "": " phy",
bb_transc->mo.opstart_success ? "": " opstart");
}
}
static void st_op_enabled_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_state)
{
struct gsm_bts_bb_trx *bb_transc = (struct gsm_bts_bb_trx *)fi->priv;
struct gsm_bts_trx *trx = gsm_bts_bb_trx_get_trx(bb_transc);
uint8_t tn;
oml_mo_state_chg(&bb_transc->mo, NM_OPSTATE_ENABLED, NM_AVSTATE_OK);
/* Mark Dependency TS as Offline (ready to be Opstarted) */
for (tn = 0; tn < TRX_NR_TS; tn++) {
struct gsm_bts_trx_ts *ts = &trx->ts[tn];
osmo_fsm_inst_dispatch(ts->mo.fi, NM_EV_BBTRANSC_ENABLED, NULL);
}
}
static void st_op_enabled(struct osmo_fsm_inst *fi, uint32_t event, void *data)
{
switch (event) {
case NM_EV_RSL_DOWN:
break;
case NM_EV_PHYLINK_DOWN:
break;
case NM_EV_DISABLE:
break;
default:
OSMO_ASSERT(0);
}
nm_bb_transc_fsm_state_chg(fi, NM_BBTRANSC_ST_OP_DISABLED_OFFLINE);
}
static struct osmo_fsm_state nm_bb_transc_fsm_states[] = {
[NM_BBTRANSC_ST_OP_DISABLED_NOTINSTALLED] = {
.in_event_mask =
X(NM_EV_SW_ACT) |
X(NM_EV_RSL_UP) |
X(NM_EV_RSL_DOWN) |
X(NM_EV_PHYLINK_UP) |
X(NM_EV_PHYLINK_DOWN),
.out_state_mask =
X(NM_BBTRANSC_ST_OP_DISABLED_OFFLINE),
.name = "DISABLED_NOTINSTALLED",
.onenter = st_op_disabled_notinstalled_on_enter,
.action = st_op_disabled_notinstalled,
},
[NM_BBTRANSC_ST_OP_DISABLED_OFFLINE] = {
.in_event_mask =
X(NM_EV_OPSTART_ACK) |
X(NM_EV_OPSTART_NACK) |
X(NM_EV_RSL_UP) |
X(NM_EV_RSL_DOWN) |
X(NM_EV_PHYLINK_UP) |
X(NM_EV_PHYLINK_DOWN),
.out_state_mask =
X(NM_BBTRANSC_ST_OP_ENABLED),
.name = "DISABLED_OFFLINE",
.onenter = st_op_disabled_offline_on_enter,
.action = st_op_disabled_offline,
},
[NM_BBTRANSC_ST_OP_ENABLED] = {
.in_event_mask =
X(NM_EV_RSL_DOWN) |
X(NM_EV_PHYLINK_DOWN),
.out_state_mask =
X(NM_BBTRANSC_ST_OP_DISABLED_OFFLINE),
.name = "ENABLED",
.onenter = st_op_enabled_on_enter,
.action = st_op_enabled,
},
};
struct osmo_fsm nm_bb_transc_fsm = {
.name = "NM_BBTRANSC_OP",
.states = nm_bb_transc_fsm_states,
.num_states = ARRAY_SIZE(nm_bb_transc_fsm_states),
.event_names = nm_fsm_event_names,
.log_subsys = DOML,
};
static __attribute__((constructor)) void nm_bb_transc_fsm_init(void)
{
OSMO_ASSERT(osmo_fsm_register(&nm_bb_transc_fsm) == 0);
}
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