1925 lines
54 KiB
C
1925 lines
54 KiB
C
/* Interface handler for Sysmocom L1 */
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/* (C) 2011-2016 by Harald Welte <laforge@gnumonks.org>
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* (C) 2014 by Holger Hans Peter Freyther
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdint.h>
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/select.h>
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#include <osmocom/core/timer.h>
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#include <osmocom/core/write_queue.h>
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#include <osmocom/gsm/gsm_utils.h>
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#include <osmocom/gsm/lapdm.h>
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#include <osmo-bts/logging.h>
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#include <osmo-bts/bts.h>
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#include <osmo-bts/oml.h>
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#include <osmo-bts/rsl.h>
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#include <osmo-bts/gsm_data.h>
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#include <osmo-bts/phy_link.h>
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#include <osmo-bts/paging.h>
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#include <osmo-bts/measurement.h>
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#include <osmo-bts/pcu_if.h>
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#include <osmo-bts/handover.h>
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#include <osmo-bts/bts_model.h>
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#include <osmo-bts/l1sap.h>
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#include <osmo-bts/msg_utils.h>
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#include <osmo-bts/dtx_dl_amr_fsm.h>
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#include <osmo-bts/tx_power.h>
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#include <osmo-bts/nm_common_fsm.h>
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#include <sysmocom/femtobts/superfemto.h>
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#include <sysmocom/femtobts/gsml1prim.h>
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#include <sysmocom/femtobts/gsml1const.h>
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#include <sysmocom/femtobts/gsml1types.h>
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#include "femtobts.h"
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#include "l1_if.h"
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#include "l1_transp.h"
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#include "hw_misc.h"
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#include "misc/sysmobts_par.h"
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#include "eeprom.h"
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#include "utils.h"
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struct wait_l1_conf {
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struct llist_head list; /* internal linked list */
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struct osmo_timer_list timer; /* timer for L1 timeout */
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unsigned int conf_prim_id; /* primitive we expect in response */
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HANDLE conf_hLayer3; /* layer 3 handle we expect in response */
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unsigned int is_sys_prim; /* is this a system (1) or L1 (0) primitive */
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l1if_compl_cb *cb;
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void *cb_data;
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};
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static void release_wlc(struct wait_l1_conf *wlc)
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{
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osmo_timer_del(&wlc->timer);
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talloc_free(wlc);
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}
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static void l1if_req_timeout(void *data)
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{
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struct wait_l1_conf *wlc = data;
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if (wlc->is_sys_prim)
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LOGP(DL1C, LOGL_FATAL, "Timeout waiting for SYS primitive %s\n",
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get_value_string(femtobts_sysprim_names, wlc->conf_prim_id));
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else
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LOGP(DL1C, LOGL_FATAL, "Timeout waiting for L1 primitive %s\n",
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get_value_string(femtobts_l1prim_names, wlc->conf_prim_id));
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exit(23);
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}
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static HANDLE l1p_get_hLayer3(GsmL1_Prim_t *prim)
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{
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switch (prim->id) {
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case GsmL1_PrimId_MphInitReq:
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return prim->u.mphInitReq.hLayer3;
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case GsmL1_PrimId_MphCloseReq:
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return prim->u.mphCloseReq.hLayer3;
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case GsmL1_PrimId_MphConnectReq:
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return prim->u.mphConnectReq.hLayer3;
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case GsmL1_PrimId_MphDisconnectReq:
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return prim->u.mphDisconnectReq.hLayer3;
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case GsmL1_PrimId_MphActivateReq:
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return prim->u.mphActivateReq.hLayer3;
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case GsmL1_PrimId_MphDeactivateReq:
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return prim->u.mphDeactivateReq.hLayer3;
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case GsmL1_PrimId_MphConfigReq:
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return prim->u.mphConfigReq.hLayer3;
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case GsmL1_PrimId_MphMeasureReq:
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return prim->u.mphMeasureReq.hLayer3;
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case GsmL1_PrimId_MphInitCnf:
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return prim->u.mphInitCnf.hLayer3;
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case GsmL1_PrimId_MphCloseCnf:
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return prim->u.mphCloseCnf.hLayer3;
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case GsmL1_PrimId_MphConnectCnf:
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return prim->u.mphConnectCnf.hLayer3;
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case GsmL1_PrimId_MphDisconnectCnf:
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return prim->u.mphDisconnectCnf.hLayer3;
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case GsmL1_PrimId_MphActivateCnf:
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return prim->u.mphActivateCnf.hLayer3;
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case GsmL1_PrimId_MphDeactivateCnf:
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return prim->u.mphDeactivateCnf.hLayer3;
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case GsmL1_PrimId_MphConfigCnf:
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return prim->u.mphConfigCnf.hLayer3;
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case GsmL1_PrimId_MphMeasureCnf:
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return prim->u.mphMeasureCnf.hLayer3;
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case GsmL1_PrimId_MphTimeInd:
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case GsmL1_PrimId_MphSyncInd:
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case GsmL1_PrimId_PhEmptyFrameReq:
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case GsmL1_PrimId_PhDataReq:
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case GsmL1_PrimId_PhConnectInd:
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case GsmL1_PrimId_PhReadyToSendInd:
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case GsmL1_PrimId_PhDataInd:
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case GsmL1_PrimId_PhRaInd:
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break;
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default:
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LOGP(DL1C, LOGL_ERROR, "unknown L1 primitive %u\n", prim->id);
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break;
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}
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return 0;
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}
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static int _l1if_req_compl(struct femtol1_hdl *fl1h, struct msgb *msg,
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int is_system_prim, l1if_compl_cb *cb, void *data)
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{
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struct wait_l1_conf *wlc;
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struct osmo_wqueue *wqueue;
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unsigned int timeout_secs;
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/* allocate new wsc and store reference to mutex and conf_id */
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wlc = talloc_zero(fl1h, struct wait_l1_conf);
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wlc->cb = cb;
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wlc->cb_data = data;
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/* Make sure we actually have received a REQUEST type primitive */
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if (is_system_prim == 0) {
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GsmL1_Prim_t *l1p = msgb_l1prim(msg);
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LOGP(DL1P, LOGL_INFO, "Tx L1 prim %s\n",
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get_value_string(femtobts_l1prim_names, l1p->id));
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if (femtobts_l1prim_type[l1p->id] != L1P_T_REQ) {
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LOGP(DL1C, LOGL_ERROR, "L1 Prim %s is not a Request!\n",
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get_value_string(femtobts_l1prim_names, l1p->id));
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talloc_free(wlc);
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return -EINVAL;
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}
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wlc->is_sys_prim = 0;
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wlc->conf_prim_id = femtobts_l1prim_req2conf[l1p->id];
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wlc->conf_hLayer3 = l1p_get_hLayer3(l1p);
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wqueue = &fl1h->write_q[MQ_L1_WRITE];
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timeout_secs = 30;
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} else {
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SuperFemto_Prim_t *sysp = msgb_sysprim(msg);
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LOGP(DL1C, LOGL_INFO, "Tx SYS prim %s\n",
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get_value_string(femtobts_sysprim_names, sysp->id));
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if (femtobts_sysprim_type[sysp->id] != L1P_T_REQ) {
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LOGP(DL1C, LOGL_ERROR, "SYS Prim %s is not a Request!\n",
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get_value_string(femtobts_sysprim_names, sysp->id));
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talloc_free(wlc);
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return -EINVAL;
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}
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wlc->is_sys_prim = 1;
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wlc->conf_prim_id = femtobts_sysprim_req2conf[sysp->id];
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wqueue = &fl1h->write_q[MQ_SYS_WRITE];
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timeout_secs = 30;
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}
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/* enqueue the message in the queue and add wsc to list */
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if (osmo_wqueue_enqueue(wqueue, msg) != 0) {
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/* So we will get a timeout but the log message might help */
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LOGP(DL1C, LOGL_ERROR, "Write queue for %s full. dropping msg.\n",
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is_system_prim ? "system primitive" : "gsm");
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msgb_free(msg);
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}
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llist_add(&wlc->list, &fl1h->wlc_list);
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/* schedule a timer for timeout_secs seconds. If DSP fails to respond, we terminate */
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wlc->timer.data = wlc;
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wlc->timer.cb = l1if_req_timeout;
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osmo_timer_schedule(&wlc->timer, timeout_secs, 0);
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return 0;
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}
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/* send a request primitive to the L1 and schedule completion call-back */
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int l1if_req_compl(struct femtol1_hdl *fl1h, struct msgb *msg,
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l1if_compl_cb *cb, void *data)
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{
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return _l1if_req_compl(fl1h, msg, 1, cb, data);
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}
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int l1if_gsm_req_compl(struct femtol1_hdl *fl1h, struct msgb *msg,
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l1if_compl_cb *cb, void *data)
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{
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return _l1if_req_compl(fl1h, msg, 0, cb, data);
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}
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/* allocate a msgb containing a GsmL1_Prim_t */
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struct msgb *l1p_msgb_alloc(void)
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{
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struct msgb *msg = msgb_alloc(sizeof(GsmL1_Prim_t), "l1_prim");
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if (msg)
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msg->l1h = msgb_put(msg, sizeof(GsmL1_Prim_t));
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return msg;
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}
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/* allocate a msgb containing a SuperFemto_Prim_t */
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struct msgb *sysp_msgb_alloc(void)
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{
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struct msgb *msg = msgb_alloc(sizeof(SuperFemto_Prim_t), "sys_prim");
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if (msg)
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msg->l1h = msgb_put(msg, sizeof(SuperFemto_Prim_t));
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return msg;
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}
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static GsmL1_PhDataReq_t *
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data_req_from_rts_ind(GsmL1_Prim_t *l1p,
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const GsmL1_PhReadyToSendInd_t *rts_ind)
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{
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GsmL1_PhDataReq_t *data_req = &l1p->u.phDataReq;
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l1p->id = GsmL1_PrimId_PhDataReq;
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/* copy fields from PH-RSS.ind */
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data_req->hLayer1 = rts_ind->hLayer1;
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data_req->u8Tn = rts_ind->u8Tn;
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data_req->u32Fn = rts_ind->u32Fn;
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data_req->sapi = rts_ind->sapi;
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data_req->subCh = rts_ind->subCh;
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data_req->u8BlockNbr = rts_ind->u8BlockNbr;
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return data_req;
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}
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static GsmL1_PhEmptyFrameReq_t *
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empty_req_from_rts_ind(GsmL1_Prim_t *l1p,
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const GsmL1_PhReadyToSendInd_t *rts_ind)
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{
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GsmL1_PhEmptyFrameReq_t *empty_req = &l1p->u.phEmptyFrameReq;
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l1p->id = GsmL1_PrimId_PhEmptyFrameReq;
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empty_req->hLayer1 = rts_ind->hLayer1;
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empty_req->u8Tn = rts_ind->u8Tn;
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empty_req->u32Fn = rts_ind->u32Fn;
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empty_req->sapi = rts_ind->sapi;
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empty_req->subCh = rts_ind->subCh;
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empty_req->u8BlockNbr = rts_ind->u8BlockNbr;
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return empty_req;
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}
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/* fill PH-DATA.req from l1sap primitive */
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static GsmL1_PhDataReq_t *
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data_req_from_l1sap(GsmL1_Prim_t *l1p, struct femtol1_hdl *fl1,
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uint8_t tn, uint32_t fn, uint8_t sapi, uint8_t sub_ch,
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uint8_t block_nr, uint8_t len)
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{
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GsmL1_PhDataReq_t *data_req = &l1p->u.phDataReq;
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l1p->id = GsmL1_PrimId_PhDataReq;
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/* copy fields from PH-RSS.ind */
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data_req->hLayer1 = fl1->hLayer1;
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data_req->u8Tn = tn;
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data_req->u32Fn = fn;
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data_req->sapi = sapi;
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data_req->subCh = sub_ch;
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data_req->u8BlockNbr = block_nr;
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data_req->msgUnitParam.u8Size = len;
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return data_req;
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}
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/* fill PH-EMPTY_FRAME.req from l1sap primitive */
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static GsmL1_PhEmptyFrameReq_t *
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empty_req_from_l1sap(GsmL1_Prim_t *l1p, struct femtol1_hdl *fl1,
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uint8_t tn, uint32_t fn, uint8_t sapi,
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uint8_t subch, uint8_t block_nr)
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{
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GsmL1_PhEmptyFrameReq_t *empty_req = &l1p->u.phEmptyFrameReq;
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l1p->id = GsmL1_PrimId_PhEmptyFrameReq;
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empty_req->hLayer1 = fl1->hLayer1;
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empty_req->u8Tn = tn;
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empty_req->u32Fn = fn;
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empty_req->sapi = sapi;
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empty_req->subCh = subch;
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empty_req->u8BlockNbr = block_nr;
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return empty_req;
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}
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static int ph_data_req(struct gsm_bts_trx *trx, struct msgb *msg,
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struct osmo_phsap_prim *l1sap, bool use_cache)
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{
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struct femtol1_hdl *fl1 = trx_femtol1_hdl(trx);
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struct msgb *l1msg = l1p_msgb_alloc();
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struct gsm_lchan *lchan;
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uint32_t u32Fn;
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uint8_t u8Tn, subCh, u8BlockNbr = 0, sapi = 0;
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uint8_t chan_nr, link_id;
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int len;
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if (!msg) {
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LOGP(DL1C, LOGL_FATAL, "PH-DATA.req without msg. "
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"Please fix!\n");
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abort();
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}
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len = msgb_l2len(msg);
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chan_nr = l1sap->u.data.chan_nr;
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link_id = l1sap->u.data.link_id;
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u32Fn = l1sap->u.data.fn;
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u8Tn = L1SAP_CHAN2TS(chan_nr);
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subCh = 0x1f;
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lchan = get_lchan_by_chan_nr(trx, chan_nr);
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if (L1SAP_IS_LINK_SACCH(link_id)) {
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sapi = GsmL1_Sapi_Sacch;
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if (!L1SAP_IS_CHAN_TCHF(chan_nr) && !L1SAP_IS_CHAN_PDCH(chan_nr))
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subCh = l1sap_chan2ss(chan_nr);
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} else if (L1SAP_IS_CHAN_TCHF(chan_nr) || L1SAP_IS_CHAN_PDCH(chan_nr)) {
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if (ts_is_pdch(&trx->ts[u8Tn])) {
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if (L1SAP_IS_PTCCH(u32Fn)) {
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sapi = GsmL1_Sapi_Ptcch;
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u8BlockNbr = L1SAP_FN2PTCCHBLOCK(u32Fn);
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} else {
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sapi = GsmL1_Sapi_Pdtch;
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u8BlockNbr = L1SAP_FN2MACBLOCK(u32Fn);
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}
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} else {
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sapi = GsmL1_Sapi_FacchF;
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u8BlockNbr = (u32Fn % 13) >> 2;
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}
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} else if (L1SAP_IS_CHAN_TCHH(chan_nr)) {
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subCh = L1SAP_CHAN2SS_TCHH(chan_nr);
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sapi = GsmL1_Sapi_FacchH;
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u8BlockNbr = (u32Fn % 26) >> 3;
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} else if (L1SAP_IS_CHAN_SDCCH4(chan_nr)) {
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subCh = L1SAP_CHAN2SS_SDCCH4(chan_nr);
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sapi = GsmL1_Sapi_Sdcch;
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} else if (L1SAP_IS_CHAN_SDCCH8(chan_nr)) {
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subCh = L1SAP_CHAN2SS_SDCCH8(chan_nr);
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sapi = GsmL1_Sapi_Sdcch;
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} else if (L1SAP_IS_CHAN_BCCH(chan_nr)) {
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sapi = GsmL1_Sapi_Bcch;
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} else if (L1SAP_IS_CHAN_CBCH(chan_nr)) {
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sapi = GsmL1_Sapi_Cbch;
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} else if (L1SAP_IS_CHAN_AGCH_PCH(chan_nr)) {
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/* The sapi depends on DSP configuration, not
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* on the actual SYSTEM INFORMATION 3. */
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u8BlockNbr = l1sap_fn2ccch_block(u32Fn);
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if (u8BlockNbr >= num_agch(trx, "PH-DATA-REQ"))
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sapi = GsmL1_Sapi_Pch;
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else
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sapi = GsmL1_Sapi_Agch;
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} else {
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LOGPLCFN(lchan, u32Fn, DL1C, LOGL_NOTICE, "unknown prim %d op %d " "chan_nr %d link_id %d\n",
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l1sap->oph.primitive, l1sap->oph.operation, chan_nr, link_id);
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msgb_free(l1msg);
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return -EINVAL;
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}
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/* convert l1sap message to GsmL1 primitive, keep payload */
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if (len) {
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/* data request */
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GsmL1_Prim_t *l1p = msgb_l1prim(l1msg);
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data_req_from_l1sap(l1p, fl1, u8Tn, u32Fn, sapi, subCh, u8BlockNbr, len);
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if (use_cache)
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memcpy(l1p->u.phDataReq.msgUnitParam.u8Buffer,
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lchan->tch.dtx.facch, msgb_l2len(msg));
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else if (dtx_dl_amr_enabled(lchan) &&
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((lchan->tch.dtx.dl_amr_fsm->state == ST_ONSET_F) ||
|
|
(lchan->tch.dtx.dl_amr_fsm->state == ST_U_INH_F) ||
|
|
(lchan->tch.dtx.dl_amr_fsm->state == ST_F1_INH_F))) {
|
|
if (sapi == GsmL1_Sapi_FacchF) {
|
|
sapi = GsmL1_Sapi_TchF;
|
|
}
|
|
if (sapi == GsmL1_Sapi_FacchH) {
|
|
sapi = GsmL1_Sapi_TchH;
|
|
subCh = L1SAP_CHAN2SS_TCHH(chan_nr);
|
|
u8BlockNbr = (u32Fn % 13) >> 2;
|
|
}
|
|
if (sapi == GsmL1_Sapi_TchH || sapi == GsmL1_Sapi_TchF) {
|
|
/* FACCH interruption of DTX silence */
|
|
/* cache FACCH data */
|
|
memcpy(lchan->tch.dtx.facch, msg->l2h,
|
|
msgb_l2len(msg));
|
|
/* prepare ONSET or INH message */
|
|
if(lchan->tch.dtx.dl_amr_fsm->state == ST_ONSET_F)
|
|
l1p->u.phDataReq.msgUnitParam.u8Buffer[0] =
|
|
GsmL1_TchPlType_Amr_Onset;
|
|
else if(lchan->tch.dtx.dl_amr_fsm->state == ST_U_INH_F)
|
|
l1p->u.phDataReq.msgUnitParam.u8Buffer[0] =
|
|
GsmL1_TchPlType_Amr_SidUpdateInH;
|
|
else if(lchan->tch.dtx.dl_amr_fsm->state == ST_F1_INH_F)
|
|
l1p->u.phDataReq.msgUnitParam.u8Buffer[0] =
|
|
GsmL1_TchPlType_Amr_SidFirstInH;
|
|
/* ignored CMR/CMI pair */
|
|
l1p->u.phDataReq.msgUnitParam.u8Buffer[1] = 0;
|
|
l1p->u.phDataReq.msgUnitParam.u8Buffer[2] = 0;
|
|
/* update length */
|
|
data_req_from_l1sap(l1p, fl1, u8Tn, u32Fn, sapi,
|
|
subCh, u8BlockNbr, 3);
|
|
/* update FN so it can be checked by TCH silence
|
|
resume handler */
|
|
lchan->tch.dtx.fn = LCHAN_FN_DUMMY;
|
|
}
|
|
} else if (dtx_dl_amr_enabled(lchan) &&
|
|
lchan->tch.dtx.dl_amr_fsm->state == ST_FACCH) {
|
|
/* update FN so it can be checked by TCH silence
|
|
resume handler */
|
|
lchan->tch.dtx.fn = LCHAN_FN_DUMMY;
|
|
}
|
|
else {
|
|
OSMO_ASSERT(msgb_l2len(msg) <= sizeof(l1p->u.phDataReq.msgUnitParam.u8Buffer));
|
|
memcpy(l1p->u.phDataReq.msgUnitParam.u8Buffer, msg->l2h,
|
|
msgb_l2len(msg));
|
|
}
|
|
LOGPLCFN(lchan, u32Fn, DL1P, LOGL_DEBUG, "PH-DATA.req(%s)\n",
|
|
osmo_hexdump(l1p->u.phDataReq.msgUnitParam.u8Buffer, l1p->u.phDataReq.msgUnitParam.u8Size));
|
|
} else {
|
|
/* empty frame */
|
|
GsmL1_Prim_t *l1p = msgb_l1prim(l1msg);
|
|
|
|
empty_req_from_l1sap(l1p, fl1, u8Tn, u32Fn, sapi, subCh, u8BlockNbr);
|
|
}
|
|
|
|
/* send message to DSP's queue */
|
|
if (osmo_wqueue_enqueue(&fl1->write_q[MQ_L1_WRITE], l1msg) != 0) {
|
|
LOGPLCFN(lchan, u32Fn, DL1P, LOGL_ERROR, "MQ_L1_WRITE queue full. Dropping msg.\n");
|
|
msgb_free(l1msg);
|
|
} else
|
|
dtx_int_signal(lchan);
|
|
|
|
if (dtx_recursion(lchan))
|
|
ph_data_req(trx, msg, l1sap, true);
|
|
return 0;
|
|
}
|
|
|
|
static int ph_tch_req(struct gsm_bts_trx *trx, struct msgb *msg,
|
|
struct osmo_phsap_prim *l1sap, bool use_cache, bool marker)
|
|
{
|
|
struct femtol1_hdl *fl1 = trx_femtol1_hdl(trx);
|
|
struct gsm_lchan *lchan;
|
|
uint32_t u32Fn;
|
|
uint8_t u8Tn, subCh, u8BlockNbr = 0, sapi;
|
|
uint8_t chan_nr;
|
|
GsmL1_Prim_t *l1p;
|
|
struct msgb *nmsg = NULL;
|
|
int rc = -1;
|
|
|
|
chan_nr = l1sap->u.tch.chan_nr;
|
|
u32Fn = l1sap->u.tch.fn;
|
|
u8Tn = L1SAP_CHAN2TS(chan_nr);
|
|
u8BlockNbr = (u32Fn % 13) >> 2;
|
|
if (L1SAP_IS_CHAN_TCHH(chan_nr)) {
|
|
subCh = L1SAP_CHAN2SS_TCHH(chan_nr);
|
|
sapi = GsmL1_Sapi_TchH;
|
|
} else {
|
|
subCh = 0x1f;
|
|
sapi = GsmL1_Sapi_TchF;
|
|
}
|
|
|
|
lchan = get_lchan_by_chan_nr(trx, chan_nr);
|
|
|
|
/* create new message and fill data */
|
|
if (msg) {
|
|
/* create new message */
|
|
nmsg = l1p_msgb_alloc();
|
|
if (!nmsg)
|
|
return -ENOMEM;
|
|
l1p = msgb_l1prim(nmsg);
|
|
rc = l1if_tch_encode(lchan,
|
|
l1p->u.phDataReq.msgUnitParam.u8Buffer,
|
|
&l1p->u.phDataReq.msgUnitParam.u8Size,
|
|
msgb_l2(msg), msgb_l2len(msg), u32Fn, use_cache,
|
|
l1sap->u.tch.marker);
|
|
if (rc < 0) {
|
|
/* no data encoded for L1: smth will be generated below */
|
|
msgb_free(nmsg);
|
|
nmsg = NULL;
|
|
}
|
|
}
|
|
|
|
/* no message/data, we might generate an empty traffic msg or re-send
|
|
cached SID in case of DTX */
|
|
if (!nmsg)
|
|
nmsg = gen_empty_tch_msg(lchan, u32Fn);
|
|
|
|
/* no traffic message, we generate an empty msg */
|
|
if (!nmsg) {
|
|
nmsg = l1p_msgb_alloc();
|
|
if (!nmsg)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
l1p = msgb_l1prim(nmsg);
|
|
|
|
/* if we provide data, or if data is already in nmsg */
|
|
if (l1p->u.phDataReq.msgUnitParam.u8Size) {
|
|
/* data request */
|
|
data_req_from_l1sap(l1p, fl1, u8Tn, u32Fn, sapi, subCh,
|
|
u8BlockNbr,
|
|
l1p->u.phDataReq.msgUnitParam.u8Size);
|
|
} else {
|
|
/* empty frame */
|
|
if (trx->bts->dtxd && trx != trx->bts->c0)
|
|
lchan->tch.dtx.dl_active = true;
|
|
empty_req_from_l1sap(l1p, fl1, u8Tn, u32Fn, sapi, subCh, u8BlockNbr);
|
|
}
|
|
/* send message to DSP's queue */
|
|
if (osmo_wqueue_enqueue(&fl1->write_q[MQ_L1_WRITE], nmsg) != 0) {
|
|
LOGPLCFN(lchan, u32Fn, DL1P, LOGL_ERROR, "MQ_L1_WRITE queue full. Dropping msg.\n");
|
|
msgb_free(nmsg);
|
|
return -ENOBUFS;
|
|
}
|
|
if (dtx_is_first_p1(lchan))
|
|
dtx_dispatch(lchan, E_FIRST);
|
|
else
|
|
dtx_int_signal(lchan);
|
|
|
|
if (dtx_recursion(lchan)) /* DTX: send voice after ONSET was sent */
|
|
return ph_tch_req(trx, l1sap->oph.msg, l1sap, true, false);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mph_info_req(struct gsm_bts_trx *trx, struct msgb *msg,
|
|
struct osmo_phsap_prim *l1sap)
|
|
{
|
|
struct femtol1_hdl *fl1 = trx_femtol1_hdl(trx);
|
|
uint8_t chan_nr;
|
|
struct gsm_lchan *lchan;
|
|
int rc = 0;
|
|
|
|
switch (l1sap->u.info.type) {
|
|
case PRIM_INFO_ACT_CIPH:
|
|
chan_nr = l1sap->u.info.u.ciph_req.chan_nr;
|
|
lchan = get_lchan_by_chan_nr(trx, chan_nr);
|
|
if (l1sap->u.info.u.ciph_req.uplink) {
|
|
l1if_set_ciphering(fl1, lchan, 0);
|
|
lchan->ciph_state = LCHAN_CIPH_RX_REQ;
|
|
}
|
|
if (l1sap->u.info.u.ciph_req.downlink) {
|
|
l1if_set_ciphering(fl1, lchan, 1);
|
|
lchan->ciph_state = LCHAN_CIPH_RX_CONF_TX_REQ;
|
|
}
|
|
if (l1sap->u.info.u.ciph_req.downlink
|
|
&& l1sap->u.info.u.ciph_req.uplink)
|
|
lchan->ciph_state = LCHAN_CIPH_RXTX_REQ;
|
|
break;
|
|
case PRIM_INFO_ACTIVATE:
|
|
case PRIM_INFO_DEACTIVATE:
|
|
case PRIM_INFO_MODIFY:
|
|
chan_nr = l1sap->u.info.u.act_req.chan_nr;
|
|
lchan = get_lchan_by_chan_nr(trx, chan_nr);
|
|
if (l1sap->u.info.type == PRIM_INFO_ACTIVATE)
|
|
l1if_rsl_chan_act(lchan);
|
|
else if (l1sap->u.info.type == PRIM_INFO_MODIFY) {
|
|
if (lchan->ho.active == HANDOVER_WAIT_FRAME)
|
|
l1if_rsl_chan_mod(lchan);
|
|
else
|
|
l1if_rsl_mode_modify(lchan);
|
|
} else if (l1sap->u.info.u.act_req.sacch_only)
|
|
l1if_rsl_deact_sacch(lchan);
|
|
else
|
|
l1if_rsl_chan_rel(lchan);
|
|
break;
|
|
default:
|
|
LOGP(DL1C, LOGL_NOTICE, "unknown MPH-INFO.req %d\n",
|
|
l1sap->u.info.type);
|
|
rc = -EINVAL;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* primitive from common part */
|
|
int bts_model_l1sap_down(struct gsm_bts_trx *trx, struct osmo_phsap_prim *l1sap)
|
|
{
|
|
struct msgb *msg = l1sap->oph.msg;
|
|
int rc = 0;
|
|
|
|
/* called functions MUST NOT take ownership of msgb, as it is
|
|
* free()d below */
|
|
switch (OSMO_PRIM_HDR(&l1sap->oph)) {
|
|
case OSMO_PRIM(PRIM_PH_DATA, PRIM_OP_REQUEST):
|
|
rc = ph_data_req(trx, msg, l1sap, false);
|
|
break;
|
|
case OSMO_PRIM(PRIM_TCH, PRIM_OP_REQUEST):
|
|
rc = ph_tch_req(trx, msg, l1sap, false, l1sap->u.tch.marker);
|
|
break;
|
|
case OSMO_PRIM(PRIM_MPH_INFO, PRIM_OP_REQUEST):
|
|
rc = mph_info_req(trx, msg, l1sap);
|
|
break;
|
|
default:
|
|
LOGP(DL1C, LOGL_NOTICE, "unknown prim %d op %d\n",
|
|
l1sap->oph.primitive, l1sap->oph.operation);
|
|
rc = -EINVAL;
|
|
}
|
|
|
|
msgb_free(msg);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int handle_mph_time_ind(struct femtol1_hdl *fl1,
|
|
GsmL1_MphTimeInd_t *time_ind,
|
|
struct msgb *msg)
|
|
{
|
|
struct gsm_bts_trx *trx = femtol1_hdl_trx(fl1);
|
|
struct gsm_bts *bts = trx->bts;
|
|
struct osmo_phsap_prim l1sap;
|
|
uint32_t fn;
|
|
|
|
/* increment the primitive count for the alive timer */
|
|
fl1->alive_prim_cnt++;
|
|
|
|
/* ignore every time indication, except for c0 */
|
|
if (trx != bts->c0) {
|
|
msgb_free(msg);
|
|
return 0;
|
|
}
|
|
|
|
fn = time_ind->u32Fn;
|
|
|
|
memset(&l1sap, 0, sizeof(l1sap));
|
|
osmo_prim_init(&l1sap.oph, SAP_GSM_PH, PRIM_MPH_INFO,
|
|
PRIM_OP_INDICATION, NULL);
|
|
l1sap.u.info.type = PRIM_INFO_TIME;
|
|
l1sap.u.info.u.time_ind.fn = fn;
|
|
|
|
msgb_free(msg);
|
|
|
|
return l1sap_up(trx, &l1sap);
|
|
}
|
|
|
|
static enum gsm_phys_chan_config pick_pchan(struct gsm_bts_trx_ts *ts)
|
|
{
|
|
switch (ts->pchan) {
|
|
case GSM_PCHAN_TCH_F_PDCH:
|
|
if (ts->flags & TS_F_PDCH_ACTIVE)
|
|
return GSM_PCHAN_PDCH;
|
|
return GSM_PCHAN_TCH_F;
|
|
case GSM_PCHAN_OSMO_DYN:
|
|
return ts->dyn.pchan_is;
|
|
default:
|
|
return ts->pchan;
|
|
}
|
|
}
|
|
|
|
static uint8_t chan_nr_by_sapi(struct gsm_bts_trx_ts *ts,
|
|
GsmL1_Sapi_t sapi, GsmL1_SubCh_t subCh,
|
|
uint8_t u8Tn, uint32_t u32Fn)
|
|
{
|
|
uint8_t cbits = 0;
|
|
enum gsm_phys_chan_config pchan = pick_pchan(ts);
|
|
OSMO_ASSERT(pchan != GSM_PCHAN_TCH_F_PDCH);
|
|
OSMO_ASSERT(pchan != GSM_PCHAN_OSMO_DYN);
|
|
|
|
switch (sapi) {
|
|
case GsmL1_Sapi_Bcch:
|
|
cbits = 0x10;
|
|
break;
|
|
case GsmL1_Sapi_Cbch:
|
|
cbits = 0xc8 >> 3; /* Osmocom extension for CBCH via L1SAP */
|
|
break;
|
|
case GsmL1_Sapi_Sacch:
|
|
switch(pchan) {
|
|
case GSM_PCHAN_TCH_F:
|
|
cbits = 0x01;
|
|
break;
|
|
case GSM_PCHAN_TCH_H:
|
|
cbits = 0x02 + subCh;
|
|
break;
|
|
case GSM_PCHAN_CCCH_SDCCH4:
|
|
case GSM_PCHAN_CCCH_SDCCH4_CBCH:
|
|
cbits = 0x04 + subCh;
|
|
break;
|
|
case GSM_PCHAN_SDCCH8_SACCH8C:
|
|
case GSM_PCHAN_SDCCH8_SACCH8C_CBCH:
|
|
cbits = 0x08 + subCh;
|
|
break;
|
|
default:
|
|
LOGP(DL1C, LOGL_ERROR, "SACCH for pchan %d?\n",
|
|
pchan);
|
|
return 0;
|
|
}
|
|
break;
|
|
case GsmL1_Sapi_Sdcch:
|
|
switch(pchan) {
|
|
case GSM_PCHAN_CCCH_SDCCH4:
|
|
case GSM_PCHAN_CCCH_SDCCH4_CBCH:
|
|
cbits = 0x04 + subCh;
|
|
break;
|
|
case GSM_PCHAN_SDCCH8_SACCH8C:
|
|
case GSM_PCHAN_SDCCH8_SACCH8C_CBCH:
|
|
cbits = 0x08 + subCh;
|
|
break;
|
|
default:
|
|
LOGP(DL1C, LOGL_ERROR, "SDCCH for pchan %d?\n",
|
|
pchan);
|
|
return 0;
|
|
}
|
|
break;
|
|
case GsmL1_Sapi_Agch:
|
|
case GsmL1_Sapi_Pch:
|
|
cbits = 0x12;
|
|
break;
|
|
case GsmL1_Sapi_Pdtch:
|
|
case GsmL1_Sapi_Pacch:
|
|
switch(pchan) {
|
|
case GSM_PCHAN_PDCH:
|
|
cbits = 0x01;
|
|
break;
|
|
default:
|
|
LOGP(DL1C, LOGL_ERROR, "PDTCH for pchan %d?\n",
|
|
pchan);
|
|
return 0;
|
|
}
|
|
break;
|
|
case GsmL1_Sapi_TchF:
|
|
cbits = 0x01;
|
|
break;
|
|
case GsmL1_Sapi_TchH:
|
|
cbits = 0x02 + subCh;
|
|
break;
|
|
case GsmL1_Sapi_FacchF:
|
|
cbits = 0x01;
|
|
break;
|
|
case GsmL1_Sapi_FacchH:
|
|
cbits = 0x02 + subCh;
|
|
break;
|
|
case GsmL1_Sapi_Ptcch:
|
|
if (!L1SAP_IS_PTCCH(u32Fn)) {
|
|
LOGP(DL1C, LOGL_FATAL, "Not expecting PTCCH at frame "
|
|
"number other than 12, got it at %u (%u). "
|
|
"Please fix!\n", u32Fn % 52, u32Fn);
|
|
abort();
|
|
}
|
|
switch(pchan) {
|
|
case GSM_PCHAN_PDCH:
|
|
cbits = 0x01;
|
|
break;
|
|
default:
|
|
LOGP(DL1C, LOGL_ERROR, "PTCCH for pchan %d?\n",
|
|
pchan);
|
|
return 0;
|
|
}
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
/* not reached due to default case above */
|
|
return (cbits << 3) | u8Tn;
|
|
}
|
|
|
|
static const enum l1sap_common_sapi common_sapi_by_sapi_t[] = {
|
|
[GsmL1_Sapi_Idle] = L1SAP_COMMON_SAPI_IDLE,
|
|
[GsmL1_Sapi_Fcch] = L1SAP_COMMON_SAPI_FCCH,
|
|
[GsmL1_Sapi_Sch] = L1SAP_COMMON_SAPI_SCH,
|
|
[GsmL1_Sapi_Sacch] = L1SAP_COMMON_SAPI_SACCH,
|
|
[GsmL1_Sapi_Sdcch] = L1SAP_COMMON_SAPI_SDCCH,
|
|
[GsmL1_Sapi_Bcch] = L1SAP_COMMON_SAPI_BCCH,
|
|
[GsmL1_Sapi_Pch] = L1SAP_COMMON_SAPI_PCH,
|
|
[GsmL1_Sapi_Agch] = L1SAP_COMMON_SAPI_AGCH,
|
|
[GsmL1_Sapi_Cbch] = L1SAP_COMMON_SAPI_CBCH,
|
|
[GsmL1_Sapi_Rach] = L1SAP_COMMON_SAPI_RACH,
|
|
[GsmL1_Sapi_TchF] = L1SAP_COMMON_SAPI_TCH_F,
|
|
[GsmL1_Sapi_FacchF] = L1SAP_COMMON_SAPI_FACCH_F,
|
|
[GsmL1_Sapi_TchH] = L1SAP_COMMON_SAPI_TCH_H,
|
|
[GsmL1_Sapi_FacchH] = L1SAP_COMMON_SAPI_FACCH_H,
|
|
[GsmL1_Sapi_Nch] = L1SAP_COMMON_SAPI_NCH,
|
|
[GsmL1_Sapi_Pdtch] = L1SAP_COMMON_SAPI_PDTCH,
|
|
[GsmL1_Sapi_Pacch] = L1SAP_COMMON_SAPI_PACCH,
|
|
[GsmL1_Sapi_Pbcch] = L1SAP_COMMON_SAPI_PBCCH,
|
|
[GsmL1_Sapi_Pagch] = L1SAP_COMMON_SAPI_PAGCH,
|
|
[GsmL1_Sapi_Ppch] = L1SAP_COMMON_SAPI_PPCH,
|
|
[GsmL1_Sapi_Pnch] = L1SAP_COMMON_SAPI_PNCH,
|
|
[GsmL1_Sapi_Ptcch] = L1SAP_COMMON_SAPI_PTCCH,
|
|
[GsmL1_Sapi_Prach] = L1SAP_COMMON_SAPI_PRACH,
|
|
};
|
|
|
|
static enum l1sap_common_sapi get_common_sapi(GsmL1_Sapi_t sapi)
|
|
{
|
|
if (sapi >= GsmL1_Sapi_NUM)
|
|
return L1SAP_COMMON_SAPI_UNKNOWN;
|
|
return common_sapi_by_sapi_t[sapi];
|
|
}
|
|
|
|
static void set_log_ctx_sapi(GsmL1_Sapi_t sapi)
|
|
{
|
|
l1sap_log_ctx_sapi = get_common_sapi(sapi);
|
|
log_set_context(LOG_CTX_L1_SAPI, &l1sap_log_ctx_sapi);
|
|
}
|
|
|
|
static int handle_ph_readytosend_ind(struct femtol1_hdl *fl1,
|
|
GsmL1_PhReadyToSendInd_t *rts_ind,
|
|
struct msgb *l1p_msg)
|
|
{
|
|
struct gsm_bts_trx *trx = femtol1_hdl_trx(fl1);
|
|
struct gsm_bts *bts = trx->bts;
|
|
struct msgb *resp_msg;
|
|
GsmL1_PhDataReq_t *data_req;
|
|
GsmL1_MsgUnitParam_t *msu_param;
|
|
struct gsm_time g_time;
|
|
uint32_t t3p;
|
|
int rc;
|
|
struct osmo_phsap_prim *l1sap;
|
|
uint8_t chan_nr, link_id;
|
|
uint32_t fn;
|
|
|
|
set_log_ctx_sapi(rts_ind->sapi);
|
|
|
|
/* check if primitive should be handled by common part */
|
|
chan_nr = chan_nr_by_sapi(&trx->ts[rts_ind->u8Tn], rts_ind->sapi,
|
|
rts_ind->subCh, rts_ind->u8Tn, rts_ind->u32Fn);
|
|
if (chan_nr) {
|
|
fn = rts_ind->u32Fn;
|
|
if (rts_ind->sapi == GsmL1_Sapi_Sacch)
|
|
link_id = LID_SACCH;
|
|
else
|
|
link_id = LID_DEDIC;
|
|
/* recycle the msgb and use it for the L1 primitive,
|
|
* which means that we (or our caller) must not free it */
|
|
rc = msgb_trim(l1p_msg, sizeof(*l1sap));
|
|
if (rc < 0)
|
|
MSGB_ABORT(l1p_msg, "No room for primitive\n");
|
|
l1sap = msgb_l1sap_prim(l1p_msg);
|
|
if (rts_ind->sapi == GsmL1_Sapi_TchF
|
|
|| rts_ind->sapi == GsmL1_Sapi_TchH) {
|
|
osmo_prim_init(&l1sap->oph, SAP_GSM_PH, PRIM_TCH_RTS,
|
|
PRIM_OP_INDICATION, l1p_msg);
|
|
l1sap->u.tch.chan_nr = chan_nr;
|
|
l1sap->u.tch.fn = fn;
|
|
} else {
|
|
osmo_prim_init(&l1sap->oph, SAP_GSM_PH, PRIM_PH_RTS,
|
|
PRIM_OP_INDICATION, l1p_msg);
|
|
l1sap->u.data.link_id = link_id;
|
|
l1sap->u.data.chan_nr = chan_nr;
|
|
l1sap->u.data.fn = fn;
|
|
}
|
|
|
|
return l1sap_up(trx, l1sap);
|
|
}
|
|
|
|
gsm_fn2gsmtime(&g_time, rts_ind->u32Fn);
|
|
|
|
DEBUGPGT(DL1P, &g_time, "Rx PH-RTS.ind SAPI=%s\n",
|
|
get_value_string(femtobts_l1sapi_names, rts_ind->sapi));
|
|
|
|
/* in all other cases, we need to allocate a new PH-DATA.ind
|
|
* primitive msgb and start to fill it */
|
|
resp_msg = l1p_msgb_alloc();
|
|
data_req = data_req_from_rts_ind(msgb_l1prim(resp_msg), rts_ind);
|
|
msu_param = &data_req->msgUnitParam;
|
|
|
|
/* set default size */
|
|
msu_param->u8Size = GSM_MACBLOCK_LEN;
|
|
|
|
switch (rts_ind->sapi) {
|
|
case GsmL1_Sapi_Sch:
|
|
/* compute T3prime */
|
|
t3p = (g_time.t3 - 1) / 10;
|
|
/* fill SCH burst with data */
|
|
msu_param->u8Size = 4;
|
|
msu_param->u8Buffer[0] = (bts->bsic << 2) | (g_time.t1 >> 9);
|
|
msu_param->u8Buffer[1] = (g_time.t1 >> 1);
|
|
msu_param->u8Buffer[2] = (g_time.t1 << 7) | (g_time.t2 << 2) | (t3p >> 1);
|
|
msu_param->u8Buffer[3] = (t3p & 1);
|
|
break;
|
|
case GsmL1_Sapi_Prach:
|
|
goto empty_frame;
|
|
break;
|
|
default:
|
|
memcpy(msu_param->u8Buffer, fill_frame, GSM_MACBLOCK_LEN);
|
|
break;
|
|
}
|
|
tx:
|
|
|
|
/* transmit */
|
|
if (osmo_wqueue_enqueue(&fl1->write_q[MQ_L1_WRITE], resp_msg) != 0) {
|
|
LOGPGT(DL1C, LOGL_ERROR, &g_time, "MQ_L1_WRITE queue full. Dropping msg.\n");
|
|
msgb_free(resp_msg);
|
|
}
|
|
|
|
/* free the msgb, as we have not handed it to l1sap and thus
|
|
* need to release its memory */
|
|
msgb_free(l1p_msg);
|
|
return 0;
|
|
|
|
empty_frame:
|
|
/* in case we decide to send an empty frame... */
|
|
empty_req_from_rts_ind(msgb_l1prim(resp_msg), rts_ind);
|
|
|
|
goto tx;
|
|
}
|
|
|
|
#define LOG_FMT_MEAS "Meas: RSSI %-3.2f dBm, Qual %-3.2f dB, BER %-3.2f, Timing %d"
|
|
#define LOG_PARAM_MEAS(meas_param) (meas_param)->fRssi, (meas_param)->fLinkQuality, (meas_param)->fBer, (meas_param)->i16BurstTiming
|
|
|
|
static int handle_ph_data_ind(struct femtol1_hdl *fl1, GsmL1_PhDataInd_t *data_ind,
|
|
struct msgb *l1p_msg)
|
|
{
|
|
struct gsm_bts_trx *trx = femtol1_hdl_trx(fl1);
|
|
uint8_t chan_nr, link_id;
|
|
struct msgb *sap_msg;
|
|
struct osmo_phsap_prim *l1sap;
|
|
uint32_t fn;
|
|
struct gsm_time g_time;
|
|
int rc = 0;
|
|
|
|
set_log_ctx_sapi(data_ind->sapi);
|
|
|
|
chan_nr = chan_nr_by_sapi(&trx->ts[data_ind->u8Tn], data_ind->sapi,
|
|
data_ind->subCh, data_ind->u8Tn, data_ind->u32Fn);
|
|
if (!chan_nr) {
|
|
LOGPFN(DL1C, LOGL_ERROR, data_ind->u32Fn, "PH-DATA-INDICATION for unknown sapi %s (%d)\n",
|
|
get_value_string(femtobts_l1sapi_names, data_ind->sapi), data_ind->sapi);
|
|
msgb_free(l1p_msg);
|
|
return ENOTSUP;
|
|
}
|
|
fn = data_ind->u32Fn;
|
|
link_id = (data_ind->sapi == GsmL1_Sapi_Sacch) ? LID_SACCH : LID_DEDIC;
|
|
|
|
gsm_fn2gsmtime(&g_time, fn);
|
|
|
|
DEBUGPGT(DL1P, &g_time, "Rx PH-DATA.ind %s (hL2 %08x): %s, " LOG_FMT_MEAS "\n",
|
|
get_value_string(femtobts_l1sapi_names, data_ind->sapi), data_ind->hLayer2,
|
|
osmo_hexdump(data_ind->msgUnitParam.u8Buffer, data_ind->msgUnitParam.u8Size),
|
|
LOG_PARAM_MEAS(&data_ind->measParam));
|
|
|
|
/* check for TCH */
|
|
if (data_ind->sapi == GsmL1_Sapi_TchF
|
|
|| data_ind->sapi == GsmL1_Sapi_TchH) {
|
|
/* TCH speech frame handling */
|
|
rc = l1if_tch_rx(trx, chan_nr, l1p_msg);
|
|
msgb_free(l1p_msg);
|
|
return rc;
|
|
}
|
|
|
|
/* If we got FACCH, the RTP clock needs to account for it,
|
|
* and if we have rtp continuous-streaming enabled,
|
|
* an actual BFI packet will be emitted.
|
|
*
|
|
* Only the case of TCH/F is currently handled; the task of
|
|
* supporting TCH/H is left as a FIXME for other/later
|
|
* developers. The difficulty with supporting FACCH/H is that
|
|
* only one GsmL1_Sapi_FacchH message will be received,
|
|
* covering 40 ms of time, but two RTP "tick" output calls
|
|
* will need to be made, with appropriately adjusted frame
|
|
* numbers. As a further consideration for rtp continuous-streaming
|
|
* mode, having the two RTP BFI packets sent directly back to back,
|
|
* as opposed to proper 20 ms timing, may be so undesirable
|
|
* that some deployments may rather disable TCH/H (use only TCH/F)
|
|
* than deal with the extra pain, or use TCH/H only on SDR-based
|
|
* BTS with osmo-bts-trx where correct timing is easily achieved. */
|
|
if (data_ind->sapi == GsmL1_Sapi_FacchF)
|
|
l1if_tch_rx_facch(trx, chan_nr, l1p_msg);
|
|
|
|
/* fill L1SAP header */
|
|
sap_msg = l1sap_msgb_alloc(data_ind->msgUnitParam.u8Size);
|
|
l1sap = msgb_l1sap_prim(sap_msg);
|
|
osmo_prim_init(&l1sap->oph, SAP_GSM_PH, PRIM_PH_DATA,
|
|
PRIM_OP_INDICATION, sap_msg);
|
|
l1sap->u.data.link_id = link_id;
|
|
l1sap->u.data.chan_nr = chan_nr;
|
|
l1sap->u.data.fn = fn;
|
|
l1sap->u.data.rssi = (int8_t) (data_ind->measParam.fRssi);
|
|
l1sap->u.data.ber10k = data_ind->measParam.fBer * 10000;
|
|
l1sap->u.data.ta_offs_256bits = data_ind->measParam.i16BurstTiming * 64;
|
|
l1sap->u.data.lqual_cb = data_ind->measParam.fLinkQuality * 10;
|
|
|
|
/* copy data from L1 primitive to L1SAP primitive */
|
|
sap_msg->l2h = msgb_put(sap_msg, data_ind->msgUnitParam.u8Size);
|
|
memcpy(sap_msg->l2h, data_ind->msgUnitParam.u8Buffer,
|
|
data_ind->msgUnitParam.u8Size);
|
|
|
|
|
|
msgb_free(l1p_msg);
|
|
|
|
return l1sap_up(trx, l1sap);
|
|
}
|
|
|
|
static int handle_ph_ra_ind(struct femtol1_hdl *fl1, GsmL1_PhRaInd_t *ra_ind,
|
|
struct msgb *l1p_msg)
|
|
{
|
|
struct gsm_bts_trx *trx = femtol1_hdl_trx(fl1);
|
|
struct gsm_lchan *lchan;
|
|
struct osmo_phsap_prim *l1sap;
|
|
int rc;
|
|
struct ph_rach_ind_param rach_ind_param;
|
|
|
|
set_log_ctx_sapi(ra_ind->sapi);
|
|
LOGPFN(DL1C, LOGL_DEBUG, ra_ind->u32Fn, "Rx PH-RA.ind, " LOG_FMT_MEAS "\n",
|
|
LOG_PARAM_MEAS(&ra_ind->measParam));
|
|
|
|
if ((ra_ind->msgUnitParam.u8Size != 1) &&
|
|
(ra_ind->msgUnitParam.u8Size != 2)) {
|
|
LOGPFN(DL1C, LOGL_ERROR, ra_ind->u32Fn, "PH-RACH-INDICATION has %d bits\n",
|
|
ra_ind->sapi);
|
|
msgb_free(l1p_msg);
|
|
return 0;
|
|
}
|
|
|
|
/* We need to evaluate ra_ind before below msgb_trim(), since that invalidates *ra_ind. */
|
|
rach_ind_param = (struct ph_rach_ind_param) {
|
|
/* .chan_nr set below */
|
|
/* .ra set below */
|
|
.acc_delay = 0,
|
|
.fn = ra_ind->u32Fn,
|
|
/* .is_11bit set below */
|
|
/* .burst_type set below */
|
|
.rssi = (int8_t) ra_ind->measParam.fRssi,
|
|
.ber10k = (unsigned int) (ra_ind->measParam.fBer * 10000.0),
|
|
.acc_delay_256bits = ra_ind->measParam.i16BurstTiming * 64,
|
|
.lqual_cb = (int16_t) ra_ind->measParam.fLinkQuality * 10, /* centiBels */
|
|
};
|
|
|
|
lchan = l1if_hLayer_to_lchan(trx, ra_ind->hLayer2);
|
|
if (!lchan || lchan->ts->pchan == GSM_PCHAN_CCCH ||
|
|
lchan->ts->pchan == GSM_PCHAN_CCCH_SDCCH4 ||
|
|
lchan->ts->pchan == GSM_PCHAN_CCCH_SDCCH4_CBCH)
|
|
rach_ind_param.chan_nr = RSL_CHAN_RACH;
|
|
else
|
|
rach_ind_param.chan_nr = gsm_lchan2chan_nr(lchan);
|
|
|
|
if (ra_ind->msgUnitParam.u8Size == 2) {
|
|
uint16_t temp;
|
|
uint16_t ra = ra_ind->msgUnitParam.u8Buffer[0];
|
|
ra = ra << 3;
|
|
temp = (ra_ind->msgUnitParam.u8Buffer[1] & 0x7);
|
|
ra = ra | temp;
|
|
rach_ind_param.is_11bit = 1;
|
|
rach_ind_param.ra = ra;
|
|
} else {
|
|
rach_ind_param.is_11bit = 0;
|
|
rach_ind_param.ra = ra_ind->msgUnitParam.u8Buffer[0];
|
|
}
|
|
|
|
/* the old legacy full-bits acc_delay cannot express negative values */
|
|
if (ra_ind->measParam.i16BurstTiming > 0)
|
|
rach_ind_param.acc_delay = ra_ind->measParam.i16BurstTiming >> 2;
|
|
|
|
/* mapping of the burst type, the values are specific to osmo-bts-sysmo */
|
|
switch (ra_ind->burstType) {
|
|
case GsmL1_BurstType_Access_0:
|
|
rach_ind_param.burst_type =
|
|
GSM_L1_BURST_TYPE_ACCESS_0;
|
|
break;
|
|
case GsmL1_BurstType_Access_1:
|
|
rach_ind_param.burst_type =
|
|
GSM_L1_BURST_TYPE_ACCESS_1;
|
|
break;
|
|
case GsmL1_BurstType_Access_2:
|
|
rach_ind_param.burst_type =
|
|
GSM_L1_BURST_TYPE_ACCESS_2;
|
|
break;
|
|
default:
|
|
rach_ind_param.burst_type =
|
|
GSM_L1_BURST_TYPE_NONE;
|
|
break;
|
|
}
|
|
|
|
/* msgb_trim() invalidates ra_ind, make that abundantly clear: */
|
|
ra_ind = NULL;
|
|
rc = msgb_trim(l1p_msg, sizeof(*l1sap));
|
|
if (rc < 0)
|
|
MSGB_ABORT(l1p_msg, "No room for primitive data\n");
|
|
l1sap = msgb_l1sap_prim(l1p_msg);
|
|
osmo_prim_init(&l1sap->oph, SAP_GSM_PH, PRIM_PH_RACH, PRIM_OP_INDICATION,
|
|
l1p_msg);
|
|
l1sap->u.rach_ind = rach_ind_param;
|
|
|
|
return l1sap_up(trx, l1sap);
|
|
}
|
|
|
|
/* handle any random indication from the L1 */
|
|
static int l1if_handle_ind(struct femtol1_hdl *fl1, struct msgb *msg)
|
|
{
|
|
GsmL1_Prim_t *l1p = msgb_l1prim(msg);
|
|
int rc = 0;
|
|
|
|
/* all the below called functions must take ownership of the msgb */
|
|
switch (l1p->id) {
|
|
case GsmL1_PrimId_MphTimeInd:
|
|
rc = handle_mph_time_ind(fl1, &l1p->u.mphTimeInd, msg);
|
|
break;
|
|
case GsmL1_PrimId_MphSyncInd:
|
|
msgb_free(msg);
|
|
break;
|
|
case GsmL1_PrimId_PhConnectInd:
|
|
msgb_free(msg);
|
|
break;
|
|
case GsmL1_PrimId_PhReadyToSendInd:
|
|
rc = handle_ph_readytosend_ind(fl1, &l1p->u.phReadyToSendInd,
|
|
msg);
|
|
break;
|
|
case GsmL1_PrimId_PhDataInd:
|
|
rc = handle_ph_data_ind(fl1, &l1p->u.phDataInd, msg);
|
|
break;
|
|
case GsmL1_PrimId_PhRaInd:
|
|
rc = handle_ph_ra_ind(fl1, &l1p->u.phRaInd, msg);
|
|
break;
|
|
default:
|
|
msgb_free(msg);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static inline int is_prim_compat(GsmL1_Prim_t *l1p, struct wait_l1_conf *wlc)
|
|
{
|
|
if (wlc->is_sys_prim != 0)
|
|
return 0;
|
|
if (l1p->id != wlc->conf_prim_id)
|
|
return 0;
|
|
if (l1p_get_hLayer3(l1p) != wlc->conf_hLayer3)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
int l1if_handle_l1prim(int wq, struct femtol1_hdl *fl1h, struct msgb *msg)
|
|
{
|
|
GsmL1_Prim_t *l1p = msgb_l1prim(msg);
|
|
struct wait_l1_conf *wlc;
|
|
int rc;
|
|
|
|
switch (l1p->id) {
|
|
case GsmL1_PrimId_MphTimeInd:
|
|
/* silent, don't clog the log file */
|
|
break;
|
|
default:
|
|
LOGP(DL1P, LOGL_DEBUG, "Rx L1 prim %s on queue %d\n",
|
|
get_value_string(femtobts_l1prim_names, l1p->id), wq);
|
|
}
|
|
|
|
/* check if this is a resposne to a sync-waiting request */
|
|
llist_for_each_entry(wlc, &fl1h->wlc_list, list) {
|
|
if (is_prim_compat(l1p, wlc)) {
|
|
llist_del(&wlc->list);
|
|
if (wlc->cb) {
|
|
/* call-back function must take
|
|
* ownership of msgb */
|
|
rc = wlc->cb(femtol1_hdl_trx(fl1h), msg,
|
|
wlc->cb_data);
|
|
} else {
|
|
rc = 0;
|
|
msgb_free(msg);
|
|
}
|
|
release_wlc(wlc);
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
/* if we reach here, it is not a Conf for a pending Req */
|
|
return l1if_handle_ind(fl1h, msg);
|
|
}
|
|
|
|
int l1if_handle_sysprim(struct femtol1_hdl *fl1h, struct msgb *msg)
|
|
{
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(msg);
|
|
struct wait_l1_conf *wlc;
|
|
int rc;
|
|
|
|
LOGP(DL1P, LOGL_DEBUG, "Rx SYS prim %s\n",
|
|
get_value_string(femtobts_sysprim_names, sysp->id));
|
|
|
|
/* check if this is a resposne to a sync-waiting request */
|
|
llist_for_each_entry(wlc, &fl1h->wlc_list, list) {
|
|
/* the limitation here is that we cannot have multiple callers
|
|
* sending the same primitive */
|
|
if (wlc->is_sys_prim && sysp->id == wlc->conf_prim_id) {
|
|
llist_del(&wlc->list);
|
|
if (wlc->cb) {
|
|
/* call-back function must take
|
|
* ownership of msgb */
|
|
rc = wlc->cb(femtol1_hdl_trx(fl1h), msg,
|
|
wlc->cb_data);
|
|
} else {
|
|
rc = 0;
|
|
msgb_free(msg);
|
|
}
|
|
release_wlc(wlc);
|
|
return rc;
|
|
}
|
|
}
|
|
/* if we reach here, it is not a Conf for a pending Req */
|
|
return l1if_handle_ind(fl1h, msg);
|
|
}
|
|
|
|
static void mute_handle_ts(struct gsm_bts_trx_ts *ts, int is_muted)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ts->lchan); i++) {
|
|
struct gsm_lchan *lchan = &ts->lchan[i];
|
|
|
|
if (!is_muted)
|
|
continue;
|
|
|
|
if (lchan->state != LCHAN_S_ACTIVE)
|
|
continue;
|
|
|
|
/* skip channels that might be active for another reason */
|
|
if (lchan->type == GSM_LCHAN_CCCH)
|
|
continue;
|
|
if (lchan->type == GSM_LCHAN_PDTCH)
|
|
continue;
|
|
|
|
if (lchan->s <= 0)
|
|
continue;
|
|
|
|
lchan->s = 0;
|
|
rsl_tx_conn_fail(lchan, RSL_ERR_RADIO_LINK_FAIL);
|
|
}
|
|
}
|
|
|
|
#if SUPERFEMTO_API_VERSION >= SUPERFEMTO_API(3, 6, 0)
|
|
static int mute_rf_compl_cb(struct gsm_bts_trx *trx, struct msgb *resp,
|
|
void *data)
|
|
{
|
|
struct femtol1_hdl *fl1h = trx_femtol1_hdl(trx);
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(resp);
|
|
GsmL1_Status_t status;
|
|
|
|
status = sysp->u.muteRfCnf.status;
|
|
|
|
if (status != GsmL1_Status_Success) {
|
|
LOGP(DL1C, LOGL_ERROR, "Rx RF-MUTE.conf with status %s\n",
|
|
get_value_string(femtobts_l1status_names, status));
|
|
oml_mo_rf_lock_chg(&trx->mo, fl1h->last_rf_mute, 0);
|
|
} else {
|
|
int i;
|
|
|
|
LOGP(DL1C, LOGL_INFO, "Rx RF-MUTE.conf with status=%s\n",
|
|
get_value_string(femtobts_l1status_names, status));
|
|
bts_update_status(BTS_STATUS_RF_MUTE, fl1h->last_rf_mute[0]);
|
|
oml_mo_rf_lock_chg(&trx->mo, fl1h->last_rf_mute, 1);
|
|
|
|
osmo_static_assert(
|
|
ARRAY_SIZE(trx->ts) >= ARRAY_SIZE(fl1h->last_rf_mute),
|
|
ts_array_size);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(fl1h->last_rf_mute); ++i)
|
|
mute_handle_ts(&trx->ts[i], fl1h->last_rf_mute[i]);
|
|
}
|
|
|
|
msgb_free(resp);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* mute/unmute RF time slots */
|
|
int l1if_mute_rf(struct femtol1_hdl *hdl, uint8_t mute[8], l1if_compl_cb *cb)
|
|
{
|
|
|
|
LOGP(DL1C, LOGL_INFO, "Tx RF-MUTE.req (%d, %d, %d, %d, %d, %d, %d, %d)\n",
|
|
mute[0], mute[1], mute[2], mute[3],
|
|
mute[4], mute[5], mute[6], mute[7]
|
|
);
|
|
|
|
#if SUPERFEMTO_API_VERSION < SUPERFEMTO_API(3, 6, 0)
|
|
const uint8_t unmuted[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
|
|
struct gsm_bts_trx *trx = hdl->phy_inst->trx;
|
|
int i;
|
|
LOGP(DL1C, LOGL_ERROR, "RF-MUTE.req not supported by SuperFemto\n");
|
|
/* always acknowledge an un-MUTE (which is a no-op if MUTE is not supported */
|
|
if (!memcmp(mute, unmuted, ARRAY_SIZE(unmuted))) {
|
|
bts_update_status(BTS_STATUS_RF_MUTE, mute[0]);
|
|
oml_mo_rf_lock_chg(&trx->mo, mute, 1);
|
|
for (i = 0; i < ARRAY_SIZE(unmuted); ++i)
|
|
mute_handle_ts(&trx->ts[i], mute[i]);
|
|
return 0;
|
|
}
|
|
return -ENOTSUP;
|
|
#else
|
|
struct msgb *msg = sysp_msgb_alloc();
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(msg);
|
|
sysp->id = SuperFemto_PrimId_MuteRfReq;
|
|
memcpy(sysp->u.muteRfReq.u8Mute, mute, sizeof(sysp->u.muteRfReq.u8Mute));
|
|
/* save for later use */
|
|
memcpy(hdl->last_rf_mute, mute, sizeof(hdl->last_rf_mute));
|
|
|
|
return l1if_req_compl(hdl, msg, cb ? cb : mute_rf_compl_cb, NULL);
|
|
#endif /* < 3.6.0 */
|
|
}
|
|
|
|
static int activate_rf_compl_cb(struct gsm_bts_trx *trx, struct msgb *resp,
|
|
void *data)
|
|
{
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(resp);
|
|
GsmL1_Status_t status;
|
|
int on = 0;
|
|
|
|
if (sysp->id == SuperFemto_PrimId_ActivateRfCnf)
|
|
on = 1;
|
|
|
|
if (on)
|
|
status = sysp->u.activateRfCnf.status;
|
|
else
|
|
status = sysp->u.deactivateRfCnf.status;
|
|
|
|
LOGP(DL1C, LOGL_INFO, "Rx RF-%sACT.conf (status=%s)\n", on ? "" : "DE",
|
|
get_value_string(femtobts_l1status_names, status));
|
|
|
|
|
|
if (on) {
|
|
if (status != GsmL1_Status_Success) {
|
|
LOGP(DL1C, LOGL_FATAL, "RF-ACT.conf with status %s\n",
|
|
get_value_string(femtobts_l1status_names, status));
|
|
bts_shutdown(trx->bts, "RF-ACT failure");
|
|
} else {
|
|
bts_update_status(BTS_STATUS_RF_ACTIVE, 1);
|
|
|
|
/* signal availability */
|
|
osmo_fsm_inst_dispatch(trx->mo.fi, NM_EV_SW_ACT, NULL);
|
|
osmo_fsm_inst_dispatch(trx->bb_transc.mo.fi, NM_EV_SW_ACT, NULL);
|
|
}
|
|
} else {
|
|
bts_update_status(BTS_STATUS_RF_ACTIVE, 0);
|
|
osmo_fsm_inst_dispatch(trx->mo.fi, NM_EV_DISABLE, NULL);
|
|
osmo_fsm_inst_dispatch(trx->bb_transc.mo.fi, NM_EV_DISABLE, NULL);
|
|
}
|
|
|
|
msgb_free(resp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int get_clk_cal(struct femtol1_hdl *hdl)
|
|
{
|
|
#ifdef FEMTOBTS_API_VERSION
|
|
return hdl->clk_cal;
|
|
#else
|
|
switch (hdl->clk_src) {
|
|
case SuperFemto_ClkSrcId_Ocxo:
|
|
case SuperFemto_ClkSrcId_Tcxo:
|
|
/* only for those on-board clocks it makes sense to use
|
|
* the calibration value */
|
|
return hdl->clk_cal;
|
|
default:
|
|
/* external clocks like GPS are taken 1:1 without any
|
|
* modification by a local calibration value */
|
|
LOGP(DL1C, LOGL_INFO, "Ignoring Clock Calibration for "
|
|
"selected %s clock\n",
|
|
get_value_string(femtobts_clksrc_names, hdl->clk_src));
|
|
return 0;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#if SUPERFEMTO_API_VERSION >= SUPERFEMTO_API(2,2,0)
|
|
/*
|
|
* RevC was the last HW revision without an external
|
|
* attenuator. Check for that.
|
|
*/
|
|
static int has_external_atten(struct femtol1_hdl *hdl)
|
|
{
|
|
/* older version doesn't have an attenuator */
|
|
return hdl->hw_info.ver_major > 2;
|
|
}
|
|
#endif /* 2.2.0 */
|
|
|
|
/* activate or de-activate the entire RF-Frontend */
|
|
int l1if_activate_rf(struct femtol1_hdl *hdl, int on)
|
|
{
|
|
struct msgb *msg = sysp_msgb_alloc();
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(msg);
|
|
|
|
if (on) {
|
|
sysp->id = SuperFemto_PrimId_ActivateRfReq;
|
|
#ifdef HW_SYSMOBTS_V1
|
|
sysp->u.activateRfReq.u12ClkVc = get_clk_cal(hdl);
|
|
#else
|
|
#if SUPERFEMTO_API_VERSION >= SUPERFEMTO_API(0,2,0)
|
|
sysp->u.activateRfReq.timing.u8TimSrc = 1; /* Master */
|
|
#endif /* 0.2.0 */
|
|
sysp->u.activateRfReq.msgq.u8UseTchMsgq = 0;
|
|
sysp->u.activateRfReq.msgq.u8UsePdtchMsgq = pcu_direct;
|
|
/* Use clock from OCXO or whatever source is configured */
|
|
#if SUPERFEMTO_API_VERSION < SUPERFEMTO_API(2,1,0)
|
|
sysp->u.activateRfReq.rfTrx.u8ClkSrc = hdl->clk_src;
|
|
#else
|
|
sysp->u.activateRfReq.rfTrx.clkSrc = hdl->clk_src;
|
|
#endif /* 2.1.0 */
|
|
sysp->u.activateRfReq.rfTrx.iClkCor = get_clk_cal(hdl);
|
|
#if SUPERFEMTO_API_VERSION < SUPERFEMTO_API(2,4,0)
|
|
#if SUPERFEMTO_API_VERSION < SUPERFEMTO_API(2,1,0)
|
|
sysp->u.activateRfReq.rfRx.u8ClkSrc = hdl->clk_src;
|
|
#else
|
|
sysp->u.activateRfReq.rfRx.clkSrc = hdl->clk_src;
|
|
#endif /* 2.1.0 */
|
|
sysp->u.activateRfReq.rfRx.iClkCor = get_clk_cal(hdl);
|
|
#endif /* API 2.4.0 */
|
|
#if SUPERFEMTO_API_VERSION >= SUPERFEMTO_API(2,2,0)
|
|
struct gsm_bts_trx *trx = hdl->phy_inst->trx;
|
|
if (has_external_atten(hdl)) {
|
|
LOGP(DL1C, LOGL_INFO, "Using external attenuator.\n");
|
|
sysp->u.activateRfReq.rfTrx.u8UseExtAtten = 1;
|
|
sysp->u.activateRfReq.rfTrx.fMaxTxPower =
|
|
(float) get_p_trxout_target_mdBm(trx, 0) / 1000;
|
|
}
|
|
#endif /* 2.2.0 */
|
|
#if SUPERFEMTO_API_VERSION >= SUPERFEMTO_API(3,8,1)
|
|
/* maximum cell size in quarter-bits, 90 == 12.456 km */
|
|
sysp->u.activateRfReq.u8MaxCellSize = 90;
|
|
#endif
|
|
#endif /* !HW_SYSMOBTS_V1 */
|
|
} else {
|
|
sysp->id = SuperFemto_PrimId_DeactivateRfReq;
|
|
}
|
|
|
|
return l1if_req_compl(hdl, msg, activate_rf_compl_cb, NULL);
|
|
}
|
|
|
|
/* call-back on arrival of DSP+FPGA version + band capability */
|
|
static int info_compl_cb(struct gsm_bts_trx *trx, struct msgb *resp,
|
|
void *data)
|
|
{
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(resp);
|
|
SuperFemto_SystemInfoCnf_t *sic = &sysp->u.systemInfoCnf;
|
|
struct femtol1_hdl *fl1h = trx_femtol1_hdl(trx);
|
|
|
|
fl1h->hw_info.dsp_version[0] = sic->dspVersion.major;
|
|
fl1h->hw_info.dsp_version[1] = sic->dspVersion.minor;
|
|
fl1h->hw_info.dsp_version[2] = sic->dspVersion.build;
|
|
|
|
fl1h->hw_info.fpga_version[0] = sic->fpgaVersion.major;
|
|
fl1h->hw_info.fpga_version[1] = sic->fpgaVersion.minor;
|
|
fl1h->hw_info.fpga_version[2] = sic->fpgaVersion.build;
|
|
|
|
#ifndef HW_SYSMOBTS_V1
|
|
fl1h->hw_info.ver_major = sic->boardVersion.rev;
|
|
fl1h->hw_info.ver_minor = sic->boardVersion.option;
|
|
#endif
|
|
|
|
snprintf(trx->pinst->version, sizeof(trx->pinst->version), "%u.%u dsp %u.%u.%u fpga %u.%u.%u",
|
|
fl1h->hw_info.ver_major, fl1h->hw_info.ver_minor,
|
|
fl1h->hw_info.dsp_version[0], fl1h->hw_info.dsp_version[1], fl1h->hw_info.dsp_version[2],
|
|
fl1h->hw_info.fpga_version[0], fl1h->hw_info.fpga_version[1], fl1h->hw_info.fpga_version[2]);
|
|
|
|
LOGP(DL1C, LOGL_INFO, "%s\n", trx->pinst->version);
|
|
|
|
#ifdef HW_SYSMOBTS_V1
|
|
if (sic->rfBand.gsm850)
|
|
fl1h->hw_info.band_support |= GSM_BAND_850;
|
|
if (sic->rfBand.gsm900)
|
|
fl1h->hw_info.band_support |= GSM_BAND_900;
|
|
if (sic->rfBand.dcs1800)
|
|
fl1h->hw_info.band_support |= GSM_BAND_1800;
|
|
if (sic->rfBand.pcs1900)
|
|
fl1h->hw_info.band_support |= GSM_BAND_1900;
|
|
#endif
|
|
|
|
if (!(fl1h->hw_info.band_support & trx->bts->band))
|
|
LOGP(DL1C, LOGL_FATAL, "BTS band %s not supported by hw\n",
|
|
gsm_band_name(trx->bts->band));
|
|
|
|
if (l1if_dsp_ver(fl1h) < L1_VER_SHIFT(5,3,3))
|
|
fl1h->rtp_hr_jumble_needed = true;
|
|
|
|
/* Request the activation */
|
|
l1if_activate_rf(fl1h, 1);
|
|
|
|
#if SUPERFEMTO_API_VERSION >= SUPERFEMTO_API(2,4,0)
|
|
/* load calibration tables (if we know their path) */
|
|
int rc = calib_load(fl1h);
|
|
if (rc < 0)
|
|
LOGP(DL1C, LOGL_ERROR, "Operating without calibration; "
|
|
"unable to load tables!\n");
|
|
#else
|
|
LOGP(DL1C, LOGL_NOTICE, "Operating without calibration "
|
|
"as software was compiled against old header files\n");
|
|
#endif
|
|
|
|
msgb_free(resp);
|
|
|
|
phy_link_state_set(trx->pinst->phy_link, PHY_LINK_CONNECTED);
|
|
|
|
/* FIXME: clock related */
|
|
return 0;
|
|
}
|
|
|
|
/* request DSP+FPGA code versions + band capability */
|
|
static int l1if_get_info(struct femtol1_hdl *hdl)
|
|
{
|
|
struct msgb *msg = sysp_msgb_alloc();
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(msg);
|
|
|
|
sysp->id = SuperFemto_PrimId_SystemInfoReq;
|
|
|
|
return l1if_req_compl(hdl, msg, info_compl_cb, NULL);
|
|
}
|
|
|
|
static int reset_compl_cb(struct gsm_bts_trx *trx, struct msgb *resp,
|
|
void *data)
|
|
{
|
|
struct femtol1_hdl *fl1h = trx_femtol1_hdl(trx);
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(resp);
|
|
GsmL1_Status_t status = sysp->u.layer1ResetCnf.status;
|
|
|
|
LOGP(DL1C, LOGL_NOTICE, "Rx L1-RESET.conf (status=%s)\n",
|
|
get_value_string(femtobts_l1status_names, status));
|
|
|
|
msgb_free(resp);
|
|
|
|
/* If we're coming out of reset .. */
|
|
if (status != GsmL1_Status_Success) {
|
|
LOGP(DL1C, LOGL_FATAL, "L1-RESET.conf with status %s\n",
|
|
get_value_string(femtobts_l1status_names, status));
|
|
bts_shutdown(trx->bts, "L1-RESET failure");
|
|
}
|
|
|
|
/* as we cannot get the current DSP trace flags, we simply
|
|
* set them to zero (or whatever dsp_trace_f has been initialized to */
|
|
l1if_set_trace_flags(fl1h, fl1h->dsp_trace_f);
|
|
|
|
/* obtain version information on DSP/FPGA and band capabilities */
|
|
l1if_get_info(fl1h);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int l1if_reset(struct femtol1_hdl *hdl)
|
|
{
|
|
struct msgb *msg = sysp_msgb_alloc();
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(msg);
|
|
sysp->id = SuperFemto_PrimId_Layer1ResetReq;
|
|
|
|
return l1if_req_compl(hdl, msg, reset_compl_cb, NULL);
|
|
}
|
|
|
|
/* set the trace flags within the DSP */
|
|
int l1if_set_trace_flags(struct femtol1_hdl *hdl, uint32_t flags)
|
|
{
|
|
struct msgb *msg = sysp_msgb_alloc();
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(msg);
|
|
|
|
LOGP(DL1C, LOGL_INFO, "Tx SET-TRACE-FLAGS.req (0x%08x)\n",
|
|
flags);
|
|
|
|
sysp->id = SuperFemto_PrimId_SetTraceFlagsReq;
|
|
sysp->u.setTraceFlagsReq.u32Tf = flags;
|
|
|
|
hdl->dsp_trace_f = flags;
|
|
|
|
/* There is no confirmation we could wait for */
|
|
if (osmo_wqueue_enqueue(&hdl->write_q[MQ_SYS_WRITE], msg) != 0) {
|
|
LOGP(DL1C, LOGL_ERROR, "MQ_SYS_WRITE queue full. Dropping msg\n");
|
|
msgb_free(msg);
|
|
return -EAGAIN;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* get those femtol1_hdl.hw_info elements that sre in EEPROM */
|
|
static int get_hwinfo_eeprom(struct femtol1_hdl *fl1h)
|
|
{
|
|
eeprom_SysInfo_t sysinfo;
|
|
int val, rc;
|
|
|
|
rc = sysmobts_get_type(&val);
|
|
if (rc < 0)
|
|
return rc;
|
|
fl1h->hw_info.model_nr = val;
|
|
|
|
rc = sysmobts_par_get_int(SYSMOBTS_PAR_MODEL_FLAGS, &val);
|
|
if (rc < 0)
|
|
return rc;
|
|
fl1h->hw_info.model_flags = val;
|
|
|
|
rc = sysmobts_get_trx(&val);
|
|
if (rc < 0)
|
|
return rc;
|
|
fl1h->hw_info.trx_nr = val;
|
|
|
|
rc = eeprom_ReadSysInfo(&sysinfo);
|
|
if (rc != EEPROM_SUCCESS) {
|
|
/* some early units don't yet have the EEPROM
|
|
* information structure */
|
|
LOGP(DL1C, LOGL_ERROR, "Unable to read band support "
|
|
"from EEPROM, assuming all bands\n");
|
|
fl1h->hw_info.band_support = GSM_BAND_850 | GSM_BAND_900 | GSM_BAND_1800 | GSM_BAND_1900;
|
|
return 0;
|
|
}
|
|
|
|
if (sysinfo.u8GSM850)
|
|
fl1h->hw_info.band_support |= GSM_BAND_850;
|
|
if (sysinfo.u8GSM900)
|
|
fl1h->hw_info.band_support |= GSM_BAND_900;
|
|
if (sysinfo.u8DCS1800)
|
|
fl1h->hw_info.band_support |= GSM_BAND_1800;
|
|
if (sysinfo.u8PCS1900)
|
|
fl1h->hw_info.band_support |= GSM_BAND_1900;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Set the clock calibration to the value read from the eeprom. */
|
|
static void clk_cal_use_eeprom(struct femtol1_hdl *hdl)
|
|
{
|
|
struct phy_instance *pinst = hdl->phy_inst;
|
|
eeprom_RfClockCal_t rf_clk;
|
|
int rc;
|
|
|
|
if (!pinst->u.sysmobts.clk_use_eeprom)
|
|
return;
|
|
|
|
rc = eeprom_ReadRfClockCal(&rf_clk);
|
|
if (rc != EEPROM_SUCCESS) {
|
|
LOGP(DL1C, LOGL_ERROR, "Failed to read from EEPROM.\n");
|
|
return;
|
|
}
|
|
|
|
hdl->clk_cal = rf_clk.iClkCor;
|
|
LOGP(DL1C, LOGL_NOTICE,
|
|
"Read clock calibration(%d) from EEPROM.\n", hdl->clk_cal);
|
|
}
|
|
|
|
struct femtol1_hdl *l1if_open(struct phy_instance *pinst)
|
|
{
|
|
struct femtol1_hdl *fl1h;
|
|
int rc;
|
|
|
|
#ifndef HW_SYSMOBTS_V1
|
|
LOGP(DL1C, LOGL_INFO, "sysmoBTSv2 L1IF compiled against API headers "
|
|
"v%u.%u.%u\n", SUPERFEMTO_API_VERSION >> 16,
|
|
(SUPERFEMTO_API_VERSION >> 8) & 0xff,
|
|
SUPERFEMTO_API_VERSION & 0xff);
|
|
#else
|
|
LOGP(DL1C, LOGL_INFO, "sysmoBTSv1 L1IF compiled against API headers "
|
|
"v%u.%u.%u\n", FEMTOBTS_API_VERSION >> 16,
|
|
(FEMTOBTS_API_VERSION >> 8) & 0xff,
|
|
FEMTOBTS_API_VERSION & 0xff);
|
|
#endif
|
|
|
|
fl1h = talloc_zero(pinst, struct femtol1_hdl);
|
|
if (!fl1h)
|
|
return NULL;
|
|
INIT_LLIST_HEAD(&fl1h->wlc_list);
|
|
|
|
fl1h->phy_inst = pinst;
|
|
fl1h->dsp_trace_f = pinst->u.sysmobts.dsp_trace_f;
|
|
fl1h->clk_src = pinst->u.sysmobts.clk_src;
|
|
fl1h->clk_cal = pinst->u.sysmobts.clk_cal;
|
|
clk_cal_use_eeprom(fl1h);
|
|
get_hwinfo_eeprom(fl1h);
|
|
#if SUPERFEMTO_API_VERSION >= SUPERFEMTO_API(2,1,0)
|
|
if (fl1h->clk_src == SuperFemto_ClkSrcId_None) {
|
|
if (fl1h->hw_info.model_nr == 2050) {
|
|
/* On the sysmoBTS 2050, we don't have an OCXO but
|
|
* start with the TCXO and will sync it with the PPS
|
|
* of the GPS in case there is a fix. */
|
|
fl1h->clk_src = SuperFemto_ClkSrcId_Tcxo;
|
|
LOGP(DL1C, LOGL_INFO, "Clock source defaulting to GPS 1PPS "
|
|
"on sysmoBTS 2050\n");
|
|
} else {
|
|
/* default clock source: OCXO */
|
|
fl1h->clk_src = SuperFemto_ClkSrcId_Ocxo;
|
|
}
|
|
}
|
|
#else
|
|
if (fl1h->clk_src == SF_CLKSRC_NONE)
|
|
fl1h->clk_src = SF_CLKSRC_OCXO;
|
|
#endif
|
|
|
|
rc = l1if_transport_open(MQ_SYS_WRITE, fl1h);
|
|
if (rc < 0) {
|
|
talloc_free(fl1h);
|
|
return NULL;
|
|
}
|
|
|
|
rc = l1if_transport_open(MQ_L1_WRITE, fl1h);
|
|
if (rc < 0) {
|
|
l1if_transport_close(MQ_SYS_WRITE, fl1h);
|
|
talloc_free(fl1h);
|
|
return NULL;
|
|
}
|
|
|
|
l1if_reset(fl1h);
|
|
|
|
return fl1h;
|
|
}
|
|
|
|
int l1if_close(struct femtol1_hdl *fl1h)
|
|
{
|
|
l1if_transport_close(MQ_L1_WRITE, fl1h);
|
|
l1if_transport_close(MQ_SYS_WRITE, fl1h);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef HW_SYSMOBTS_V1
|
|
int l1if_rf_clock_info_reset(struct femtol1_hdl *fl1h)
|
|
{
|
|
LOGP(DL1C, LOGL_ERROR, "RfClock calibration not supported on v1 hw.\n");
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
int l1if_rf_clock_info_correct(struct femtol1_hdl *fl1h)
|
|
{
|
|
LOGP(DL1C, LOGL_ERROR, "RfClock calibration not supported on v1 hw.\n");
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
#else
|
|
static int clock_reset_cb(struct gsm_bts_trx *trx, struct msgb *resp,
|
|
void *data)
|
|
{
|
|
msgb_free(resp);
|
|
return 0;
|
|
}
|
|
|
|
static int clock_setup_cb(struct gsm_bts_trx *trx, struct msgb *resp,
|
|
void *data)
|
|
{
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(resp);
|
|
|
|
if (sysp->u.rfClockSetupCnf.status != GsmL1_Status_Success)
|
|
LOGP(DL1C, LOGL_ERROR, "Rx RfClockSetupConf failed with: %d\n",
|
|
sysp->u.rfClockSetupCnf.status);
|
|
msgb_free(resp);
|
|
return 0;
|
|
}
|
|
|
|
static int clock_correct_info_cb(struct gsm_bts_trx *trx, struct msgb *resp,
|
|
void *data)
|
|
{
|
|
struct femtol1_hdl *fl1h = trx_femtol1_hdl(trx);
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(resp);
|
|
|
|
LOGP(DL1C, LOGL_NOTICE,
|
|
"RfClockInfo iClkCor=%d/clkSrc=%s Err=%d/ErrRes=%d/clkSrc=%s\n",
|
|
sysp->u.rfClockInfoCnf.rfTrx.iClkCor,
|
|
get_value_string(femtobts_clksrc_names,
|
|
sysp->u.rfClockInfoCnf.rfTrx.clkSrc),
|
|
sysp->u.rfClockInfoCnf.rfTrxClkCal.iClkErr,
|
|
sysp->u.rfClockInfoCnf.rfTrxClkCal.iClkErrRes,
|
|
get_value_string(femtobts_clksrc_names,
|
|
sysp->u.rfClockInfoCnf.rfTrxClkCal.clkSrc));
|
|
|
|
if (sysp->u.rfClockInfoCnf.rfTrx.clkSrc == SuperFemto_ClkSrcId_GpsPps) {
|
|
LOGP(DL1C, LOGL_ERROR,
|
|
"Calibrating GPS against GPS doesn not make sense.\n");
|
|
msgb_free(resp);
|
|
return -1;
|
|
}
|
|
|
|
if (sysp->u.rfClockInfoCnf.rfTrxClkCal.clkSrc == SuperFemto_ClkSrcId_None) {
|
|
LOGP(DL1C, LOGL_ERROR,
|
|
"No reference clock set. Please reset first.\n");
|
|
msgb_free(resp);
|
|
return -1;
|
|
}
|
|
|
|
if (sysp->u.rfClockInfoCnf.rfTrxClkCal.iClkErrRes == 0) {
|
|
LOGP(DL1C, LOGL_ERROR,
|
|
"Couldn't determine the clock difference.\n");
|
|
msgb_free(resp);
|
|
return -1;
|
|
}
|
|
|
|
fl1h->clk_cal = sysp->u.rfClockInfoCnf.rfTrxClkCal.iClkErr;
|
|
fl1h->phy_inst->u.sysmobts.clk_use_eeprom = 0;
|
|
msgb_free(resp);
|
|
|
|
/*
|
|
* Let's reset the counter and this will lead to applying the
|
|
* new calibration.
|
|
*/
|
|
l1if_rf_clock_info_reset(fl1h);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int l1if_rf_clock_info_reset(struct femtol1_hdl *fl1h)
|
|
{
|
|
struct msgb *msg = sysp_msgb_alloc();
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(msg);
|
|
|
|
/* Set GPS/PPS as reference */
|
|
sysp->id = SuperFemto_PrimId_RfClockSetupReq;
|
|
sysp->u.rfClockSetupReq.rfTrx.iClkCor = get_clk_cal(fl1h);
|
|
sysp->u.rfClockSetupReq.rfTrx.clkSrc = fl1h->clk_src;
|
|
sysp->u.rfClockSetupReq.rfTrxClkCal.clkSrc = SuperFemto_ClkSrcId_GpsPps;
|
|
l1if_req_compl(fl1h, msg, clock_setup_cb, NULL);
|
|
|
|
/* Reset the error counters */
|
|
msg = sysp_msgb_alloc();
|
|
sysp = msgb_sysprim(msg);
|
|
|
|
sysp->id = SuperFemto_PrimId_RfClockInfoReq;
|
|
sysp->u.rfClockInfoReq.u8RstClkCal = 1;
|
|
|
|
return l1if_req_compl(fl1h, msg, clock_reset_cb, NULL);
|
|
}
|
|
|
|
int l1if_rf_clock_info_correct(struct femtol1_hdl *fl1h)
|
|
{
|
|
struct msgb *msg = sysp_msgb_alloc();
|
|
SuperFemto_Prim_t *sysp = msgb_sysprim(msg);
|
|
|
|
sysp->id = SuperFemto_PrimId_RfClockInfoReq;
|
|
sysp->u.rfClockInfoReq.u8RstClkCal = 0;
|
|
|
|
return l1if_req_compl(fl1h, msg, clock_correct_info_cb, NULL);
|
|
}
|
|
|
|
#endif
|
|
|
|
static void set_power_param(struct trx_power_params *out,
|
|
int trx_p_max_out_dBm,
|
|
int int_pa_nominal_gain_dB)
|
|
{
|
|
out->trx_p_max_out_mdBm = to_mdB(trx_p_max_out_dBm);
|
|
out->pa.nominal_gain_mdB = to_mdB(int_pa_nominal_gain_dB);
|
|
}
|
|
|
|
static void fill_trx_power_params(struct gsm_bts_trx *trx,
|
|
struct phy_instance *pinst)
|
|
{
|
|
struct femtol1_hdl *fl1h = pinst->u.sysmobts.hdl;
|
|
|
|
switch (fl1h->hw_info.model_nr) {
|
|
case 1020:
|
|
set_power_param(&trx->power_params, 23, 10);
|
|
break;
|
|
case 1100:
|
|
set_power_param(&trx->power_params, 23, 17);
|
|
break;
|
|
case 2050:
|
|
set_power_param(&trx->power_params, 37, 0);
|
|
break;
|
|
default:
|
|
LOGP(DL1C, LOGL_NOTICE, "Unknown/Unsupported "
|
|
"sysmoBTS Model Number %u\n",
|
|
fl1h->hw_info.model_nr);
|
|
/* fall-through */
|
|
case 0xffff:
|
|
/* sysmoBTS 1002 without any setting in EEPROM */
|
|
LOGP(DL1C, LOGL_NOTICE, "Assuming 1002 for sysmoBTS "
|
|
"Model number %u\n", fl1h->hw_info.model_nr);
|
|
/* fall-through */
|
|
case 1002: /* sysmoBTS 1002 */
|
|
case 1003: /* sysmoBTS 1002 with GPS and PoE */
|
|
set_power_param(&trx->power_params, 23, 0);
|
|
}
|
|
}
|
|
|
|
|
|
int bts_model_phy_link_open(struct phy_link *plink)
|
|
{
|
|
struct phy_instance *pinst = phy_instance_by_num(plink, 0);
|
|
struct femtol1_hdl *hdl;
|
|
struct gsm_bts *bts;
|
|
|
|
OSMO_ASSERT(pinst);
|
|
|
|
phy_link_state_set(plink, PHY_LINK_CONNECTING);
|
|
|
|
pinst->u.sysmobts.hdl = l1if_open(pinst);
|
|
if (!pinst->u.sysmobts.hdl) {
|
|
LOGP(DL1C, LOGL_FATAL, "Cannot open L1 interface\n");
|
|
return -EIO;
|
|
}
|
|
|
|
fill_trx_power_params(pinst->trx, pinst);
|
|
|
|
bts = pinst->trx->bts;
|
|
if (pinst->trx == bts->c0) {
|
|
int rc;
|
|
rc = get_p_max_out_mdBm(bts->c0);
|
|
if (rc < 0) {
|
|
LOGP(DL1C, LOGL_NOTICE, "Cannot determine nominal "
|
|
"transmit power. Assuming 23dBm.\n");
|
|
}
|
|
bts->c0->nominal_power = rc / 1000;
|
|
}
|
|
|
|
hdl = pinst->u.sysmobts.hdl;
|
|
osmo_strlcpy(bts->sub_model, sysmobts_model(hdl->hw_info.model_nr, hdl->hw_info.trx_nr), sizeof(bts->sub_model));
|
|
|
|
return 0;
|
|
}
|