/* OpenBSC E1 Input code */ /* (C) 2008-2010 by Harald Welte * 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 . * */ #include #include #include #include #include #include #include #include #include #include #include #include #define SAPI_L2ML 0 #define SAPI_OML 62 #define SAPI_RSL 0 /* 63 ? */ /* The e1_reconfig_*() functions below take the configuration present in the * bts/trx/ts data structures and ensure the E1 configuration reflects the * timeslot/subslot/TEI configuration */ int e1_reconfig_ts(struct gsm_bts_trx_ts *ts) { struct gsm_e1_subslot *e1_link = &ts->e1_link; struct e1inp_line *line; DEBUGP(DLMI, "e1_reconfig_ts(%u,%u,%u)\n", ts->trx->bts->nr, ts->trx->nr, ts->nr); if (!e1_link->e1_ts) { LOGP(DLINP, LOGL_ERROR, "TS (%u/%u/%u) without E1 timeslot?\n", ts->nr, ts->trx->nr, ts->trx->bts->nr); return 0; } line = e1inp_line_find(e1_link->e1_nr); if (!line) { LOGP(DLINP, LOGL_ERROR, "TS (%u/%u/%u) referring to " "non-existing E1 line %u\n", ts->nr, ts->trx->nr, ts->trx->bts->nr, e1_link->e1_nr); return -ENOMEM; } return 0; } int e1_reconfig_trx(struct gsm_bts_trx *trx) { struct gsm_e1_subslot *e1_link = &trx->rsl_e1_link; struct e1inp_ts *sign_ts; struct e1inp_line *line; struct e1inp_sign_link *rsl_link; int i; if (!e1_link->e1_ts) { LOG_TRX(trx, DLINP, LOGL_ERROR, "RSL link without timeslot?\n"); return -EINVAL; } /* RSL Link */ line = e1inp_line_find(e1_link->e1_nr); if (!line) { LOG_TRX(trx, DLINP, LOGL_ERROR, "TRX RSL link referring to non-existing E1 line %u\n", e1_link->e1_nr); return -ENOMEM; } sign_ts = &line->ts[e1_link->e1_ts-1]; e1inp_ts_config_sign(sign_ts, line); /* Ericsson RBS have a per-TRX OML link in parallel to RSL */ if (trx->bts->type == GSM_BTS_TYPE_RBS2000) { struct e1inp_sign_link *oml_link; oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML, trx, trx->rsl_tei_primary, SAPI_OML); if (!oml_link) { LOG_TRX(trx, DLINP, LOGL_ERROR, "TRX OML link creation failed\n"); return -ENOMEM; } if (trx->oml_link) e1inp_sign_link_destroy(trx->oml_link); trx->oml_link = oml_link; } rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL, trx, trx->rsl_tei_primary, SAPI_RSL); if (!rsl_link) { LOG_TRX(trx, DLINP, LOGL_ERROR, "TRX RSL link creation failed\n"); return -ENOMEM; } if (trx->rsl_link_primary) e1inp_sign_link_destroy(trx->rsl_link_primary); trx->rsl_link_primary = rsl_link; for (i = 0; i < TRX_NR_TS; i++) e1_reconfig_ts(&trx->ts[i]); return 0; } /* this is the generic callback for all ISDN-based BTS. */ static int bts_isdn_sign_link(struct msgb *msg) { int ret = -EINVAL; struct e1inp_sign_link *link = msg->dst; struct gsm_bts *bts; switch (link->type) { case E1INP_SIGN_OML: bts = link->trx->bts; ret = bts->model->oml_rcvmsg(msg); break; case E1INP_SIGN_RSL: if (link->trx->mo.nm_state.administrative == NM_STATE_LOCKED) { LOG_TRX(link->trx, DLMI, LOGL_ERROR, "discarding RSL message received " "in locked administrative state\n"); msgb_free(msg); break; } ret = abis_rsl_rcvmsg(msg); break; default: LOGP(DLMI, LOGL_ERROR, "unknown link type %u\n", link->type); msgb_free(msg); break; } return ret; } struct e1inp_line_ops bts_isdn_e1inp_line_ops = { .sign_link = bts_isdn_sign_link, }; int e1_reconfig_bts(struct gsm_bts *bts) { struct gsm_e1_subslot *e1_link = &bts->oml_e1_link; struct e1inp_ts *sign_ts; struct e1inp_line *line; struct e1inp_sign_link *oml_link; struct gsm_bts_trx *trx; struct timespec tp; int rc; LOG_BTS(bts, DLMI, LOGL_DEBUG, "e1_reconfig_bts\n"); line = e1inp_line_find(e1_link->e1_nr); if (!line) { LOG_BTS(bts, DLINP, LOGL_ERROR, "BTS OML link referring to " "non-existing E1 line %u\n", e1_link->e1_nr); return -ENOMEM; } if (!bts->model->e1line_bind_ops) { LOG_BTS(bts, DLINP, LOGL_ERROR, "no callback to bind E1 line operations\n"); return -EINVAL; } if (!line->ops) bts->model->e1line_bind_ops(line); /* skip signal link initialization, this is done later for these BTS. */ if (bts->type == GSM_BTS_TYPE_NANOBTS || bts->type == GSM_BTS_TYPE_OSMOBTS) return e1inp_line_update(line); /* OML link */ if (!e1_link->e1_ts) { LOG_BTS(bts, DLINP, LOGL_ERROR, "BTS OML link without timeslot?\n"); return -EINVAL; } sign_ts = &line->ts[e1_link->e1_ts-1]; e1inp_ts_config_sign(sign_ts, line); oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML, bts->c0, bts->oml_tei, SAPI_OML); if (!oml_link) { LOG_BTS(bts, DLINP, LOGL_ERROR, "BTS OML link creation failed\n"); return -ENOMEM; } if (bts->oml_link) e1inp_sign_link_destroy(bts->oml_link); bts->oml_link = oml_link; rc = osmo_clock_gettime(CLOCK_MONOTONIC, &tp); bts->updowntime = (rc < 0) ? 0 : tp.tv_sec; /* we don't need sub-second precision for uptime */ llist_for_each_entry(trx, &bts->trx_list, list) e1_reconfig_trx(trx); /* notify E1 input something has changed */ return e1inp_line_update(line); } #if 0 /* do some compiled-in configuration for our BTS/E1 setup */ int e1_config(struct gsm_bts *bts, int cardnr, int release_l2) { struct e1inp_line *line; struct e1inp_ts *sign_ts; struct e1inp_sign_link *oml_link, *rsl_link; struct gsm_bts_trx *trx = bts->c0; int base_ts; switch (bts->nr) { case 0: /* First BTS uses E1 TS 01,02,03,04,05 */ base_ts = HARDCODED_BTS0_TS - 1; break; case 1: /* Second BTS uses E1 TS 06,07,08,09,10 */ base_ts = HARDCODED_BTS1_TS - 1; break; case 2: /* Third BTS uses E1 TS 11,12,13,14,15 */ base_ts = HARDCODED_BTS2_TS - 1; default: return -EINVAL; } line = talloc_zero(tall_bsc_ctx, struct e1inp_line); if (!line) return -ENOMEM; /* create E1 timeslots for signalling and TRAU frames */ e1inp_ts_config(&line->ts[base_ts+1-1], line, E1INP_TS_TYPE_SIGN); e1inp_ts_config(&line->ts[base_ts+2-1], line, E1INP_TS_TYPE_TRAU); e1inp_ts_config(&line->ts[base_ts+3-1], line, E1INP_TS_TYPE_TRAU); /* create signalling links for TS1 */ sign_ts = &line->ts[base_ts+1-1]; oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML, trx, TEI_OML, SAPI_OML); rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL, trx, TEI_RSL, SAPI_RSL); /* create back-links from bts/trx */ bts->oml_link = oml_link; trx->rsl_link = rsl_link; /* enable subchannel demuxer on TS2 */ subch_demux_activate(&line->ts[base_ts+2-1].trau.demux, 1); subch_demux_activate(&line->ts[base_ts+2-1].trau.demux, 2); subch_demux_activate(&line->ts[base_ts+2-1].trau.demux, 3); /* enable subchannel demuxer on TS3 */ subch_demux_activate(&line->ts[base_ts+3-1].trau.demux, 0); subch_demux_activate(&line->ts[base_ts+3-1].trau.demux, 1); subch_demux_activate(&line->ts[base_ts+3-1].trau.demux, 2); subch_demux_activate(&line->ts[base_ts+3-1].trau.demux, 3); trx = gsm_bts_trx_num(bts, 1); if (trx) { /* create E1 timeslots for TRAU frames of TRX1 */ e1inp_ts_config(&line->ts[base_ts+4-1], line, E1INP_TS_TYPE_TRAU); e1inp_ts_config(&line->ts[base_ts+5-1], line, E1INP_TS_TYPE_TRAU); /* create RSL signalling link for TRX1 */ sign_ts = &line->ts[base_ts+1-1]; rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL, trx, TEI_RSL+1, SAPI_RSL); /* create back-links from trx */ trx->rsl_link = rsl_link; /* enable subchannel demuxer on TS2 */ subch_demux_activate(&line->ts[base_ts+4-1].trau.demux, 0); subch_demux_activate(&line->ts[base_ts+4-1].trau.demux, 1); subch_demux_activate(&line->ts[base_ts+4-1].trau.demux, 2); subch_demux_activate(&line->ts[base_ts+4-1].trau.demux, 3); /* enable subchannel demuxer on TS3 */ subch_demux_activate(&line->ts[base_ts+5-1].trau.demux, 0); subch_demux_activate(&line->ts[base_ts+5-1].trau.demux, 1); subch_demux_activate(&line->ts[base_ts+5-1].trau.demux, 2); subch_demux_activate(&line->ts[base_ts+5-1].trau.demux, 3); } return mi_setup(cardnr, line, release_l2); } #endif