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osmo-msc/src/libcommon/gsm_data_shared.c

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/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
*
* 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 <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <netinet/in.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/core/talloc.h>
#include <osmocom/gsm/gsm_utils.h>
#include <osmocom/gsm/abis_nm.h>
#include <osmocom/core/statistics.h>
#include <osmocom/msc/gsm_data.h>
void gsm_abis_mo_reset(struct gsm_abis_mo *mo)
{
mo->nm_state.operational = NM_OPSTATE_NULL;
mo->nm_state.availability = NM_AVSTATE_POWER_OFF;
}
static void gsm_mo_init(struct gsm_abis_mo *mo, struct gsm_bts *bts,
uint8_t obj_class, uint8_t p1, uint8_t p2, uint8_t p3)
{
mo->bts = bts;
mo->obj_class = obj_class;
mo->obj_inst.bts_nr = p1;
mo->obj_inst.trx_nr = p2;
mo->obj_inst.ts_nr = p3;
gsm_abis_mo_reset(mo);
}
const struct value_string bts_attribute_names[] = {
OSMO_VALUE_STRING(BTS_TYPE_VARIANT),
OSMO_VALUE_STRING(BTS_SUB_MODEL),
OSMO_VALUE_STRING(TRX_PHY_VERSION),
{ 0, NULL }
};
enum bts_attribute str2btsattr(const char *s)
{
return get_string_value(bts_attribute_names, s);
}
const char *btsatttr2str(enum bts_attribute v)
{
return get_value_string(bts_attribute_names, v);
}
const struct value_string osmo_bts_variant_names[_NUM_BTS_VARIANT + 1] = {
{ BTS_UNKNOWN, "unknown" },
{ BTS_OSMO_LITECELL15, "osmo-bts-lc15" },
{ BTS_OSMO_OCTPHY, "osmo-bts-octphy" },
{ BTS_OSMO_SYSMO, "osmo-bts-sysmo" },
{ BTS_OSMO_TRX, "omso-bts-trx" },
{ 0, NULL }
};
enum gsm_bts_type_variant str2btsvariant(const char *arg)
{
return get_string_value(osmo_bts_variant_names, arg);
}
const char *btsvariant2str(enum gsm_bts_type_variant v)
{
return get_value_string(osmo_bts_variant_names, v);
}
const struct value_string bts_type_names[_NUM_GSM_BTS_TYPE + 1] = {
{ GSM_BTS_TYPE_UNKNOWN, "unknown" },
{ GSM_BTS_TYPE_BS11, "bs11" },
{ GSM_BTS_TYPE_NANOBTS, "nanobts" },
{ GSM_BTS_TYPE_RBS2000, "rbs2000" },
{ GSM_BTS_TYPE_NOKIA_SITE, "nokia_site" },
{ GSM_BTS_TYPE_OSMOBTS, "sysmobts" },
{ 0, NULL }
};
enum gsm_bts_type str2btstype(const char *arg)
{
return get_string_value(bts_type_names, arg);
}
const char *btstype2str(enum gsm_bts_type type)
{
return get_value_string(bts_type_names, type);
}
const struct value_string gsm_bts_features_descs[] = {
{ BTS_FEAT_HSCSD, "HSCSD" },
{ BTS_FEAT_GPRS, "GPRS" },
{ BTS_FEAT_EGPRS, "EGPRS" },
{ BTS_FEAT_ECSD, "ECSD" },
{ BTS_FEAT_HOPPING, "Frequency Hopping" },
{ BTS_FEAT_MULTI_TSC, "Multi-TSC" },
{ BTS_FEAT_OML_ALERTS, "OML Alerts" },
{ BTS_FEAT_AGCH_PCH_PROP, "AGCH/PCH proportional allocation" },
{ BTS_FEAT_CBCH, "CBCH" },
{ 0, NULL }
};
const struct value_string gsm_chreq_descs[] = {
{ GSM_CHREQ_REASON_EMERG, "emergency call" },
{ GSM_CHREQ_REASON_PAG, "answer to paging" },
{ GSM_CHREQ_REASON_CALL, "call re-establishment" },
{ GSM_CHREQ_REASON_LOCATION_UPD,"Location updating" },
{ GSM_CHREQ_REASON_PDCH, "one phase packet access" },
{ GSM_CHREQ_REASON_OTHER, "other" },
{ 0, NULL }
};
const struct value_string gsm_pchant_names[13] = {
{ GSM_PCHAN_NONE, "NONE" },
{ GSM_PCHAN_CCCH, "CCCH" },
{ GSM_PCHAN_CCCH_SDCCH4,"CCCH+SDCCH4" },
{ GSM_PCHAN_TCH_F, "TCH/F" },
{ GSM_PCHAN_TCH_H, "TCH/H" },
{ GSM_PCHAN_SDCCH8_SACCH8C, "SDCCH8" },
{ GSM_PCHAN_PDCH, "PDCH" },
{ GSM_PCHAN_TCH_F_PDCH, "TCH/F_PDCH" },
{ GSM_PCHAN_UNKNOWN, "UNKNOWN" },
{ GSM_PCHAN_CCCH_SDCCH4_CBCH, "CCCH+SDCCH4+CBCH" },
{ GSM_PCHAN_SDCCH8_SACCH8C_CBCH, "SDCCH8+CBCH" },
{ GSM_PCHAN_TCH_F_TCH_H_PDCH, "TCH/F_TCH/H_PDCH" },
{ 0, NULL }
};
const struct value_string gsm_pchant_descs[13] = {
{ GSM_PCHAN_NONE, "Physical Channel not configured" },
{ GSM_PCHAN_CCCH, "FCCH + SCH + BCCH + CCCH (Comb. IV)" },
{ GSM_PCHAN_CCCH_SDCCH4,
"FCCH + SCH + BCCH + CCCH + 4 SDCCH + 2 SACCH (Comb. V)" },
{ GSM_PCHAN_TCH_F, "TCH/F + FACCH/F + SACCH (Comb. I)" },
{ GSM_PCHAN_TCH_H, "2 TCH/H + 2 FACCH/H + 2 SACCH (Comb. II)" },
{ GSM_PCHAN_SDCCH8_SACCH8C, "8 SDCCH + 4 SACCH (Comb. VII)" },
{ GSM_PCHAN_PDCH, "Packet Data Channel for GPRS/EDGE" },
{ GSM_PCHAN_TCH_F_PDCH, "Dynamic TCH/F or GPRS PDCH" },
{ GSM_PCHAN_UNKNOWN, "Unknown / Unsupported channel combination" },
{ GSM_PCHAN_CCCH_SDCCH4_CBCH, "FCCH + SCH + BCCH + CCCH + CBCH + 3 SDCCH + 2 SACCH (Comb. V)" },
{ GSM_PCHAN_SDCCH8_SACCH8C_CBCH, "7 SDCCH + 4 SACCH + CBCH (Comb. VII)" },
{ GSM_PCHAN_TCH_F_TCH_H_PDCH, "Dynamic TCH/F or TCH/H or GPRS PDCH" },
{ 0, NULL }
};
const char *gsm_pchan_name(enum gsm_phys_chan_config c)
{
return get_value_string(gsm_pchant_names, c);
}
enum gsm_phys_chan_config gsm_pchan_parse(const char *name)
{
return get_string_value(gsm_pchant_names, name);
}
/* TODO: move to libosmocore, next to gsm_chan_t_names? */
const char *gsm_lchant_name(enum gsm_chan_t c)
{
return get_value_string(gsm_chan_t_names, c);
}
static const struct value_string lchan_s_names[] = {
{ LCHAN_S_NONE, "NONE" },
{ LCHAN_S_ACT_REQ, "ACTIVATION REQUESTED" },
{ LCHAN_S_ACTIVE, "ACTIVE" },
{ LCHAN_S_INACTIVE, "INACTIVE" },
{ LCHAN_S_REL_REQ, "RELEASE REQUESTED" },
{ LCHAN_S_REL_ERR, "RELEASE DUE ERROR" },
{ LCHAN_S_BROKEN, "BROKEN UNUSABLE" },
{ 0, NULL }
};
const char *gsm_lchans_name(enum gsm_lchan_state s)
{
return get_value_string(lchan_s_names, s);
}
static const struct value_string chreq_names[] = {
{ GSM_CHREQ_REASON_EMERG, "EMERGENCY" },
{ GSM_CHREQ_REASON_PAG, "PAGING" },
{ GSM_CHREQ_REASON_CALL, "CALL" },
{ GSM_CHREQ_REASON_LOCATION_UPD,"LOCATION_UPDATE" },
{ GSM_CHREQ_REASON_OTHER, "OTHER" },
{ 0, NULL }
};
const char *gsm_chreq_name(enum gsm_chreq_reason_t c)
{
return get_value_string(chreq_names, c);
}
struct gsm_bts *gsm_bts_num(struct gsm_network *net, int num)
{
struct gsm_bts *bts;
if (num >= net->num_bts)
return NULL;
llist_for_each_entry(bts, &net->bts_list, list) {
if (bts->nr == num)
return bts;
}
return 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);
int k;
if (!trx)
return NULL;
trx->bts = bts;
trx->nr = bts->num_trx++;
trx->mo.nm_state.administrative = NM_STATE_UNLOCKED;
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);
ts->hopping.arfcns.data_len = sizeof(ts->hopping.arfcns_data);
ts->hopping.arfcns.data = ts->hopping.arfcns_data;
ts->hopping.ma.data_len = sizeof(ts->hopping.ma_data);
ts->hopping.ma.data = ts->hopping.ma_data;
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);
#ifndef ROLE_BSC
INIT_LLIST_HEAD(&lchan->sapi_cmds);
#endif
}
}
if (trx->nr != 0)
trx->nominal_power = bts->c0->nominal_power;
llist_add_tail(&trx->list, &bts->trx_list);
return trx;
}
static const uint8_t bts_nse_timer_default[] = { 3, 3, 3, 3, 30, 3, 10 };
static const uint8_t bts_cell_timer_default[] =
{ 3, 3, 3, 3, 3, 10, 3, 10, 3, 10, 3 };
static const struct gprs_rlc_cfg rlc_cfg_default = {
.parameter = {
[RLC_T3142] = 20,
[RLC_T3169] = 5,
[RLC_T3191] = 5,
[RLC_T3193] = 160, /* 10ms */
[RLC_T3195] = 5,
[RLC_N3101] = 10,
[RLC_N3103] = 4,
[RLC_N3105] = 8,
[CV_COUNTDOWN] = 15,
[T_DL_TBF_EXT] = 250 * 10, /* ms */
[T_UL_TBF_EXT] = 250 * 10, /* ms */
},
.paging = {
.repeat_time = 5 * 50, /* ms */
.repeat_count = 3,
},
.cs_mask = 0x1fff,
.initial_cs = 2,
.initial_mcs = 6,
};
struct gsm_bts *gsm_bts_alloc(void *ctx, uint8_t bts_num)
{
struct gsm_bts *bts = talloc_zero(ctx, struct gsm_bts);
int i;
if (!bts)
return NULL;
bts->nr = bts_num;
bts->num_trx = 0;
INIT_LLIST_HEAD(&bts->trx_list);
bts->ms_max_power = 15; /* dBm */
gsm_mo_init(&bts->mo, bts, NM_OC_BTS,
bts->nr, 0xff, 0xff);
gsm_mo_init(&bts->site_mgr.mo, bts, NM_OC_SITE_MANAGER,
0xff, 0xff, 0xff);
for (i = 0; i < ARRAY_SIZE(bts->gprs.nsvc); i++) {
bts->gprs.nsvc[i].bts = bts;
bts->gprs.nsvc[i].id = i;
gsm_mo_init(&bts->gprs.nsvc[i].mo, bts, NM_OC_GPRS_NSVC,
bts->nr, i, 0xff);
}
memcpy(&bts->gprs.nse.timer, bts_nse_timer_default,
sizeof(bts->gprs.nse.timer));
gsm_mo_init(&bts->gprs.nse.mo, bts, NM_OC_GPRS_NSE,
bts->nr, 0xff, 0xff);
memcpy(&bts->gprs.cell.timer, bts_cell_timer_default,
sizeof(bts->gprs.cell.timer));
gsm_mo_init(&bts->gprs.cell.mo, bts, NM_OC_GPRS_CELL,
bts->nr, 0xff, 0xff);
memcpy(&bts->gprs.cell.rlc_cfg, &rlc_cfg_default,
sizeof(bts->gprs.cell.rlc_cfg));
/* create our primary TRX */
bts->c0 = gsm_bts_trx_alloc(bts);
if (!bts->c0) {
talloc_free(bts);
return NULL;
}
bts->c0->ts[0].pchan = GSM_PCHAN_CCCH_SDCCH4;
bts->rach_b_thresh = -1;
bts->rach_ldavg_slots = -1;
bts->paging.free_chans_need = -1;
bts->features.data = &bts->_features_data[0];
bts->features.data_len = sizeof(bts->_features_data);
/* si handling */
bts->bcch_change_mark = 1;
return bts;
}
/* reset the state of all MO in the BTS */
void gsm_bts_mo_reset(struct gsm_bts *bts)
{
struct gsm_bts_trx *trx;
unsigned int i;
gsm_abis_mo_reset(&bts->mo);
gsm_abis_mo_reset(&bts->site_mgr.mo);
for (i = 0; i < ARRAY_SIZE(bts->gprs.nsvc); i++)
gsm_abis_mo_reset(&bts->gprs.nsvc[i].mo);
gsm_abis_mo_reset(&bts->gprs.nse.mo);
gsm_abis_mo_reset(&bts->gprs.cell.mo);
llist_for_each_entry(trx, &bts->trx_list, list) {
gsm_abis_mo_reset(&trx->mo);
gsm_abis_mo_reset(&trx->bb_transc.mo);
for (i = 0; i < ARRAY_SIZE(trx->ts); i++) {
struct gsm_bts_trx_ts *ts = &trx->ts[i];
gsm_abis_mo_reset(&ts->mo);
}
}
}
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;
}
char *gsm_ts_name(const struct gsm_bts_trx_ts *ts)
{
snprintf(ts2str, sizeof(ts2str), "(bts=%d,trx=%d,ts=%d)",
ts->trx->bts->nr, ts->trx->nr, ts->nr);
return ts2str;
}
/*! Log timeslot number with full pchan information */
char *gsm_ts_and_pchan_name(const struct gsm_bts_trx_ts *ts)
{
switch (ts->pchan) {
case GSM_PCHAN_TCH_F_TCH_H_PDCH:
if (ts->dyn.pchan_is == ts->dyn.pchan_want)
snprintf(ts2str, sizeof(ts2str),
"(bts=%d,trx=%d,ts=%d,pchan=%s as %s)",
ts->trx->bts->nr, ts->trx->nr, ts->nr,
gsm_pchan_name(ts->pchan),
gsm_pchan_name(ts->dyn.pchan_is));
else
snprintf(ts2str, sizeof(ts2str),
"(bts=%d,trx=%d,ts=%d,pchan=%s"
" switching %s -> %s)",
ts->trx->bts->nr, ts->trx->nr, ts->nr,
gsm_pchan_name(ts->pchan),
gsm_pchan_name(ts->dyn.pchan_is),
gsm_pchan_name(ts->dyn.pchan_want));
break;
case GSM_PCHAN_TCH_F_PDCH:
if ((ts->flags & TS_F_PDCH_PENDING_MASK) == 0)
snprintf(ts2str, sizeof(ts2str),
"(bts=%d,trx=%d,ts=%d,pchan=%s as %s)",
ts->trx->bts->nr, ts->trx->nr, ts->nr,
gsm_pchan_name(ts->pchan),
(ts->flags & TS_F_PDCH_ACTIVE)? "PDCH"
: "TCH/F");
else
snprintf(ts2str, sizeof(ts2str),
"(bts=%d,trx=%d,ts=%d,pchan=%s"
" switching %s -> %s)",
ts->trx->bts->nr, ts->trx->nr, ts->nr,
gsm_pchan_name(ts->pchan),
(ts->flags & TS_F_PDCH_ACTIVE)? "PDCH"
: "TCH/F",
(ts->flags & TS_F_PDCH_ACT_PENDING)? "PDCH"
: "TCH/F");
break;
default:
snprintf(ts2str, sizeof(ts2str), "(bts=%d,trx=%d,ts=%d,pchan=%s)",
ts->trx->bts->nr, ts->trx->nr, ts->nr,
gsm_pchan_name(ts->pchan));
break;
}
return ts2str;
}
char *gsm_lchan_name_compute(const struct gsm_lchan *lchan)
{
struct gsm_bts_trx_ts *ts = lchan->ts;
snprintf(ts2str, sizeof(ts2str), "(bts=%d,trx=%d,ts=%d,ss=%d)",
ts->trx->bts->nr, ts->trx->nr, ts->nr, lchan->nr);
return ts2str;
}
/* obtain the MO structure for a given object instance */
struct gsm_abis_mo *
gsm_objclass2mo(struct gsm_bts *bts, uint8_t obj_class,
const struct abis_om_obj_inst *obj_inst)
{
struct gsm_bts_trx *trx;
struct gsm_abis_mo *mo = NULL;
switch (obj_class) {
case NM_OC_BTS:
mo = &bts->mo;
break;
case NM_OC_RADIO_CARRIER:
if (obj_inst->trx_nr >= bts->num_trx) {
return NULL;
}
trx = gsm_bts_trx_num(bts, obj_inst->trx_nr);
mo = &trx->mo;
break;
case NM_OC_BASEB_TRANSC:
if (obj_inst->trx_nr >= bts->num_trx) {
return NULL;
}
trx = gsm_bts_trx_num(bts, obj_inst->trx_nr);
mo = &trx->bb_transc.mo;
break;
case NM_OC_CHANNEL:
if (obj_inst->trx_nr >= bts->num_trx) {
return NULL;
}
trx = gsm_bts_trx_num(bts, obj_inst->trx_nr);
if (obj_inst->ts_nr >= TRX_NR_TS)
return NULL;
mo = &trx->ts[obj_inst->ts_nr].mo;
break;
case NM_OC_SITE_MANAGER:
mo = &bts->site_mgr.mo;
break;
case NM_OC_BS11:
switch (obj_inst->bts_nr) {
case BS11_OBJ_CCLK:
mo = &bts->bs11.cclk.mo;
break;
case BS11_OBJ_BBSIG:
if (obj_inst->ts_nr > bts->num_trx)
return NULL;
trx = gsm_bts_trx_num(bts, obj_inst->trx_nr);
mo = &trx->bs11.bbsig.mo;
break;
case BS11_OBJ_PA:
if (obj_inst->ts_nr > bts->num_trx)
return NULL;
trx = gsm_bts_trx_num(bts, obj_inst->trx_nr);
mo = &trx->bs11.pa.mo;
break;
default:
return NULL;
}
break;
case NM_OC_BS11_RACK:
mo = &bts->bs11.rack.mo;
break;
case NM_OC_BS11_ENVABTSE:
if (obj_inst->trx_nr >= ARRAY_SIZE(bts->bs11.envabtse))
return NULL;
mo = &bts->bs11.envabtse[obj_inst->trx_nr].mo;
break;
case NM_OC_GPRS_NSE:
mo = &bts->gprs.nse.mo;
break;
case NM_OC_GPRS_CELL:
mo = &bts->gprs.cell.mo;
break;
case NM_OC_GPRS_NSVC:
if (obj_inst->trx_nr >= ARRAY_SIZE(bts->gprs.nsvc))
return NULL;
mo = &bts->gprs.nsvc[obj_inst->trx_nr].mo;
break;
}
return mo;
}
/* obtain the gsm_nm_state data structure for a given object instance */
struct gsm_nm_state *
gsm_objclass2nmstate(struct gsm_bts *bts, uint8_t obj_class,
const struct abis_om_obj_inst *obj_inst)
{
struct gsm_abis_mo *mo;
mo = gsm_objclass2mo(bts, obj_class, obj_inst);
if (!mo)
return NULL;
return &mo->nm_state;
}
/* obtain the in-memory data structure of a given object instance */
void *
gsm_objclass2obj(struct gsm_bts *bts, uint8_t obj_class,
const struct abis_om_obj_inst *obj_inst)
{
struct gsm_bts_trx *trx;
void *obj = NULL;
switch (obj_class) {
case NM_OC_BTS:
obj = bts;
break;
case NM_OC_RADIO_CARRIER:
if (obj_inst->trx_nr >= bts->num_trx) {
return NULL;
}
trx = gsm_bts_trx_num(bts, obj_inst->trx_nr);
obj = trx;
break;
case NM_OC_BASEB_TRANSC:
if (obj_inst->trx_nr >= bts->num_trx) {
return NULL;
}
trx = gsm_bts_trx_num(bts, obj_inst->trx_nr);
obj = &trx->bb_transc;
break;
case NM_OC_CHANNEL:
if (obj_inst->trx_nr >= bts->num_trx) {
return NULL;
}
trx = gsm_bts_trx_num(bts, obj_inst->trx_nr);
if (obj_inst->ts_nr >= TRX_NR_TS)
return NULL;
obj = &trx->ts[obj_inst->ts_nr];
break;
case NM_OC_SITE_MANAGER:
obj = &bts->site_mgr;
break;
case NM_OC_GPRS_NSE:
obj = &bts->gprs.nse;
break;
case NM_OC_GPRS_CELL:
obj = &bts->gprs.cell;
break;
case NM_OC_GPRS_NSVC:
if (obj_inst->trx_nr >= ARRAY_SIZE(bts->gprs.nsvc))
return NULL;
obj = &bts->gprs.nsvc[obj_inst->trx_nr];
break;
}
return obj;
}
/* See Table 10.5.25 of GSM04.08 */
uint8_t gsm_pchan2chan_nr(enum gsm_phys_chan_config pchan,
uint8_t ts_nr, uint8_t lchan_nr)
{
uint8_t cbits, chan_nr;
switch (pchan) {
case GSM_PCHAN_TCH_F:
case GSM_PCHAN_TCH_F_PDCH:
OSMO_ASSERT(lchan_nr == 0);
cbits = 0x01;
break;
case GSM_PCHAN_PDCH:
OSMO_ASSERT(lchan_nr == 0);
cbits = RSL_CHAN_OSMO_PDCH >> 3;
break;
case GSM_PCHAN_TCH_H:
OSMO_ASSERT(lchan_nr < 2);
cbits = 0x02;
cbits += lchan_nr;
break;
case GSM_PCHAN_CCCH_SDCCH4:
case GSM_PCHAN_CCCH_SDCCH4_CBCH:
/*
* As a special hack for BCCH, lchan_nr == 4 may be passed
* here. This should never be sent in an RSL message.
* See osmo-bts-xxx/oml.c:opstart_compl().
*/
if (lchan_nr == CCCH_LCHAN)
chan_nr = 0;
else
OSMO_ASSERT(lchan_nr < 4);
cbits = 0x04;
cbits += lchan_nr;
break;
case GSM_PCHAN_SDCCH8_SACCH8C:
case GSM_PCHAN_SDCCH8_SACCH8C_CBCH:
OSMO_ASSERT(lchan_nr < 8);
cbits = 0x08;
cbits += lchan_nr;
break;
default:
case GSM_PCHAN_CCCH:
#ifdef ROLE_BSC
OSMO_ASSERT(lchan_nr == 0);
#else
/*
* FIXME: On octphy and litecell, we hit above assertion (see
* Max's comment at https://gerrit.osmocom.org/589 ); disabled
* for BTS until this is clarified; remove the #ifdef when it
* is fixed.
*/
#warning "fix caller that passes lchan_nr != 0"
#endif
cbits = 0x10;
break;
}
chan_nr = (cbits << 3) | (ts_nr & 0x7);
return chan_nr;
}
uint8_t gsm_lchan2chan_nr(const struct gsm_lchan *lchan)
{
enum gsm_phys_chan_config pchan = lchan->ts->pchan;
if (pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH)
return gsm_lchan_as_pchan2chan_nr(lchan,
lchan->ts->dyn.pchan_is);
return gsm_pchan2chan_nr(lchan->ts->pchan, lchan->ts->nr, lchan->nr);
}
uint8_t gsm_lchan_as_pchan2chan_nr(const struct gsm_lchan *lchan,
enum gsm_phys_chan_config as_pchan)
{
if (lchan->ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH
&& as_pchan == GSM_PCHAN_PDCH)
return RSL_CHAN_OSMO_PDCH | (lchan->ts->nr & ~RSL_CHAN_NR_MASK);
return gsm_pchan2chan_nr(as_pchan, lchan->ts->nr, lchan->nr);
}
/* return the gsm_lchan for the CBCH (if it exists at all) */
struct gsm_lchan *gsm_bts_get_cbch(struct gsm_bts *bts)
{
struct gsm_lchan *lchan = NULL;
struct gsm_bts_trx *trx = bts->c0;
if (trx->ts[0].pchan == GSM_PCHAN_CCCH_SDCCH4_CBCH)
lchan = &trx->ts[0].lchan[2];
else {
int i;
for (i = 0; i < 8; i++) {
if (trx->ts[i].pchan == GSM_PCHAN_SDCCH8_SACCH8C_CBCH) {
lchan = &trx->ts[i].lchan[2];
break;
}
}
}
return lchan;
}
/* determine logical channel based on TRX and channel number IE */
struct gsm_lchan *rsl_lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr,
int *rc)
{
uint8_t ts_nr = chan_nr & 0x07;
uint8_t cbits = chan_nr >> 3;
uint8_t lch_idx;
struct gsm_bts_trx_ts *ts = &trx->ts[ts_nr];
bool ok = true;
if (rc)
*rc = -EINVAL;
if (cbits == 0x01) {
lch_idx = 0; /* TCH/F */
if (ts->pchan != GSM_PCHAN_TCH_F &&
ts->pchan != GSM_PCHAN_PDCH &&
ts->pchan != GSM_PCHAN_TCH_F_PDCH
&& !(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH
&& (ts->dyn.pchan_is == GSM_PCHAN_TCH_F
|| ts->dyn.pchan_want == GSM_PCHAN_TCH_F)))
ok = false;
} else if ((cbits & 0x1e) == 0x02) {
lch_idx = cbits & 0x1; /* TCH/H */
if (ts->pchan != GSM_PCHAN_TCH_H
&& !(ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH
&& (ts->dyn.pchan_is == GSM_PCHAN_TCH_H
|| ts->dyn.pchan_want == GSM_PCHAN_TCH_H)))
ok = false;
} else if ((cbits & 0x1c) == 0x04) {
lch_idx = cbits & 0x3; /* SDCCH/4 */
if (ts->pchan != GSM_PCHAN_CCCH_SDCCH4 &&
ts->pchan != GSM_PCHAN_CCCH_SDCCH4_CBCH)
ok = false;
} else if ((cbits & 0x18) == 0x08) {
lch_idx = cbits & 0x7; /* SDCCH/8 */
if (ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C &&
ts->pchan != GSM_PCHAN_SDCCH8_SACCH8C_CBCH)
ok = false;
} else if (cbits == 0x10 || cbits == 0x11 || cbits == 0x12) {
lch_idx = 0;
if (ts->pchan != GSM_PCHAN_CCCH &&
ts->pchan != GSM_PCHAN_CCCH_SDCCH4 &&
ts->pchan != GSM_PCHAN_CCCH_SDCCH4_CBCH)
ok = false;
/* FIXME: we should not return first sdcch4 !!! */
} else if ((chan_nr & RSL_CHAN_NR_MASK) == RSL_CHAN_OSMO_PDCH) {
lch_idx = 0;
if (ts->pchan != GSM_PCHAN_TCH_F_TCH_H_PDCH)
ok = false;
} else
return NULL;
if (rc && ok)
*rc = 0;
return &ts->lchan[lch_idx];
}
static const uint8_t subslots_per_pchan[] = {
[GSM_PCHAN_NONE] = 0,
[GSM_PCHAN_CCCH] = 0,
[GSM_PCHAN_PDCH] = 0,
[GSM_PCHAN_CCCH_SDCCH4] = 4,
[GSM_PCHAN_TCH_F] = 1,
[GSM_PCHAN_TCH_H] = 2,
[GSM_PCHAN_SDCCH8_SACCH8C] = 8,
[GSM_PCHAN_CCCH_SDCCH4_CBCH] = 4,
[GSM_PCHAN_SDCCH8_SACCH8C_CBCH] = 8,
/*
* GSM_PCHAN_TCH_F_PDCH and GSM_PCHAN_TCH_F_TCH_H_PDCH should not be
* part of this, those TS are handled according to their dynamic state.
*/
};
/*! Return the actual pchan type, also heeding dynamic TS. */
enum gsm_phys_chan_config ts_pchan(struct gsm_bts_trx_ts *ts)
{
switch (ts->pchan) {
case GSM_PCHAN_TCH_F_TCH_H_PDCH:
return ts->dyn.pchan_is;
case GSM_PCHAN_TCH_F_PDCH:
if (ts->flags & TS_F_PDCH_ACTIVE)
return GSM_PCHAN_PDCH;
else
return GSM_PCHAN_TCH_F;
default:
return ts->pchan;
}
}
/*! According to ts->pchan and possibly ts->dyn_pchan, return the number of
* logical channels available in the timeslot. */
uint8_t ts_subslots(struct gsm_bts_trx_ts *ts)
{
return subslots_per_pchan[ts_pchan(ts)];
}
static bool pchan_is_tch(enum gsm_phys_chan_config pchan)
{
switch (pchan) {
case GSM_PCHAN_TCH_F:
case GSM_PCHAN_TCH_H:
return true;
default:
return false;
}
}
bool ts_is_tch(struct gsm_bts_trx_ts *ts)
{
return pchan_is_tch(ts_pchan(ts));
}
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