mirror of git://git.sysmocom.de/ofono
354 lines
7.8 KiB
C
354 lines
7.8 KiB
C
/*
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*
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* oFono - Open Source Telephony
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*
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* Copyright (C) 2016 EndoCode AG. 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 General Public License version 2 as
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* published by the Free Software Foundation.
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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 General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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#include <glib.h>
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#include <ofono/log.h>
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#include <ofono/modem.h>
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#include <ofono/netreg.h>
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#include <ofono/netmon.h>
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#include "gatchat.h"
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#include "gatresult.h"
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#include "common.h"
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#include "ubloxmodem.h"
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#include "drivers/atmodem/vendor.h"
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static const char *cops_prefix[] = { "+COPS:", NULL };
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static const char *cesq_prefix[] = { "+CESQ:", NULL };
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struct netmon_driver_data {
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GAtChat *chat;
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};
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struct req_cb_data {
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gint ref_count; /* Ref count */
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struct ofono_netmon *netmon;
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ofono_netmon_cb_t cb;
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void *data;
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struct ofono_network_operator op;
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int rxlev; /* CESQ: Received Signal Strength Indication */
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int ber; /* CESQ: Bit Error Rate */
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int rscp; /* CESQ: Received Signal Code Powe */
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int rsrp; /* CESQ: Reference Signal Received Power */
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int ecn0; /* CESQ: Received Energy Ratio */
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int rsrq; /* CESQ: Reference Signal Received Quality */
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};
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/*
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* Returns the appropriate radio access technology.
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*
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* If we can not resolve to a specific radio access technolgy
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* we return OFONO_NETMON_CELL_TYPE_GSM by default.
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*/
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static int ublox_map_radio_access_technology(int tech)
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{
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switch (tech) {
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case ACCESS_TECHNOLOGY_GSM:
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case ACCESS_TECHNOLOGY_GSM_COMPACT:
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return OFONO_NETMON_CELL_TYPE_GSM;
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case ACCESS_TECHNOLOGY_UTRAN:
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case ACCESS_TECHNOLOGY_UTRAN_HSDPA:
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case ACCESS_TECHNOLOGY_UTRAN_HSUPA:
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case ACCESS_TECHNOLOGY_UTRAN_HSDPA_HSUPA:
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return OFONO_NETMON_CELL_TYPE_UMTS;
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case ACCESS_TECHNOLOGY_EUTRAN:
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return OFONO_NETMON_CELL_TYPE_LTE;
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}
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return OFONO_NETMON_CELL_TYPE_GSM;
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}
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static inline struct req_cb_data *req_cb_data_new0(void *cb, void *data,
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void *user)
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{
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struct req_cb_data *ret = g_new0(struct req_cb_data, 1);
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ret->ref_count = 1;
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ret->cb = cb;
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ret->data = data;
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ret->netmon = user;
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ret->rxlev = -1;
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ret->ber = -1;
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ret->rscp = -1;
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ret->rsrp = -1;
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ret->ecn0 = -1;
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ret->rsrq = -1;
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return ret;
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}
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static inline struct req_cb_data *req_cb_data_ref(struct req_cb_data *cbd)
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{
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if (cbd == NULL)
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return NULL;
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g_atomic_int_inc(&cbd->ref_count);
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return cbd;
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}
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static void req_cb_data_unref(gpointer user_data)
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{
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gboolean is_zero;
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struct req_cb_data *cbd = user_data;
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if (cbd == NULL)
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return;
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is_zero = g_atomic_int_dec_and_test(&cbd->ref_count);
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if (is_zero == TRUE)
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g_free(cbd);
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}
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static gboolean ublox_delayed_register(gpointer user_data)
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{
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struct ofono_netmon *netmon = user_data;
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ofono_netmon_register(netmon);
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return FALSE;
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}
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static void ublox_netmon_finish_success(struct req_cb_data *cbd)
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{
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struct ofono_netmon *nm = cbd->netmon;
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ofono_netmon_serving_cell_notify(nm,
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cbd->op.tech,
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OFONO_NETMON_INFO_RXLEV, cbd->rxlev,
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OFONO_NETMON_INFO_BER, cbd->ber,
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OFONO_NETMON_INFO_RSCP, cbd->rscp,
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OFONO_NETMON_INFO_ECN0, cbd->ecn0,
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OFONO_NETMON_INFO_RSRQ, cbd->rsrq,
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OFONO_NETMON_INFO_RSRP, cbd->rsrp,
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OFONO_NETMON_INFO_INVALID);
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CALLBACK_WITH_SUCCESS(cbd->cb, cbd->data);
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}
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static void cesq_cb(gboolean ok, GAtResult *result, gpointer user_data)
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{
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enum cesq_ofono_netmon_info {
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CESQ_RXLEV,
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CESQ_BER,
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CESQ_RSCP,
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CESQ_ECN0,
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CESQ_RSRQ,
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CESQ_RSRP,
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_MAX,
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};
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struct req_cb_data *cbd = user_data;
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struct ofono_error error;
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GAtResultIter iter;
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int idx, number;
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DBG("ok %d", ok);
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decode_at_error(&error, g_at_result_final_response(result));
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if (!ok) {
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CALLBACK_WITH_FAILURE(cbd->cb, cbd->data);
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return;
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}
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g_at_result_iter_init(&iter, result);
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if (!g_at_result_iter_next(&iter, "+CESQ:")) {
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DBG(" CESQ: no result ");
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goto out;
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}
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for (idx = 0; idx < _MAX; idx++) {
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ok = g_at_result_iter_next_number(&iter, &number);
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if (!ok) {
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/* Ignore and do not fail */
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DBG(" CESQ: error parsing idx: %d ", idx);
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goto out;
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}
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switch (idx) {
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case CESQ_RXLEV:
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cbd->rxlev = number != 99 ? number:cbd->rxlev;
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break;
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case CESQ_BER:
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cbd->ber = number != 99 ? number:cbd->ber;
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break;
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case CESQ_RSCP:
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cbd->rscp = number != 255 ? number:cbd->rscp;
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break;
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case CESQ_ECN0:
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cbd->ecn0 = number != 255 ? number:cbd->ecn0;
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break;
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case CESQ_RSRQ:
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cbd->rsrq = number != 255 ? number:cbd->rsrq;
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break;
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case CESQ_RSRP:
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cbd->rsrp = number != 255 ? number:cbd->rsrp;
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break;
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}
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}
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DBG(" RXLEV %d ", cbd->rxlev);
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DBG(" BER %d ", cbd->ber);
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DBG(" RSCP %d ", cbd->rscp);
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DBG(" ECN0 %d ", cbd->ecn0);
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DBG(" RSRQ %d ", cbd->rsrq);
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DBG(" RSRP %d ", cbd->rsrp);
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/*
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* We never fail at this point we always send what we collected so
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* far
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*/
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out:
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ublox_netmon_finish_success(cbd);
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}
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static void cops_cb(gboolean ok, GAtResult *result, gpointer user_data)
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{
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struct req_cb_data *cbd = user_data;
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struct ofono_netmon *nm = cbd->netmon;
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struct netmon_driver_data *nmd = ofono_netmon_get_data(nm);
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struct ofono_error error;
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GAtResultIter iter;
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int tech;
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DBG("ok %d", ok);
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decode_at_error(&error, g_at_result_final_response(result));
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if (!ok) {
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CALLBACK_WITH_FAILURE(cbd->cb, cbd->data);
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return;
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}
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g_at_result_iter_init(&iter, result);
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/* Do not fail */
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if (!g_at_result_iter_next(&iter, "+COPS:")) {
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CALLBACK_WITH_SUCCESS(cbd->cb, cbd->data);
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return;
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}
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g_at_result_iter_skip_next(&iter);
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g_at_result_iter_skip_next(&iter);
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g_at_result_iter_skip_next(&iter);
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/* Default to GSM */
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if (g_at_result_iter_next_number(&iter, &tech) == FALSE)
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cbd->op.tech = OFONO_NETMON_CELL_TYPE_GSM;
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else
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cbd->op.tech = ublox_map_radio_access_technology(tech);
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cbd = req_cb_data_ref(cbd);
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if (g_at_chat_send(nmd->chat, "AT+CESQ", cesq_prefix,
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cesq_cb, cbd, req_cb_data_unref) == 0) {
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CALLBACK_WITH_FAILURE(cbd->cb, cbd->data);
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req_cb_data_unref(cbd);
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}
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}
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static void ublox_netmon_request_update(struct ofono_netmon *netmon,
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ofono_netmon_cb_t cb, void *data)
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{
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struct netmon_driver_data *nmd = ofono_netmon_get_data(netmon);
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struct req_cb_data *cbd;
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DBG("ublox netmon request update");
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cbd = req_cb_data_new0(cb, data, netmon);
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if (g_at_chat_send(nmd->chat, "AT+COPS?", cops_prefix,
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cops_cb, cbd, req_cb_data_unref) == 0) {
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CALLBACK_WITH_FAILURE(cbd->cb, cbd->data);
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req_cb_data_unref(cbd);
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}
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}
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static int ublox_netmon_probe(struct ofono_netmon *netmon,
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unsigned int vendor, void *user)
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{
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GAtChat *chat = user;
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struct netmon_driver_data *nmd;
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DBG("ublox netmon probe");
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nmd = g_try_new0(struct netmon_driver_data, 1);
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if (nmd == NULL)
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return -ENOMEM;
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nmd->chat = g_at_chat_clone(chat);
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ofono_netmon_set_data(netmon, nmd);
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g_idle_add(ublox_delayed_register, netmon);
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return 0;
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}
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static void ublox_netmon_remove(struct ofono_netmon *netmon)
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{
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struct netmon_driver_data *nmd = ofono_netmon_get_data(netmon);
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DBG("ublox netmon remove");
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g_at_chat_unref(nmd->chat);
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ofono_netmon_set_data(netmon, NULL);
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g_free(nmd);
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}
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static const struct ofono_netmon_driver driver = {
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.name = UBLOXMODEM,
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.probe = ublox_netmon_probe,
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.remove = ublox_netmon_remove,
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.request_update = ublox_netmon_request_update,
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};
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void ublox_netmon_init(void)
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{
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ofono_netmon_driver_register(&driver);
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}
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void ublox_netmon_exit(void)
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{
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ofono_netmon_driver_unregister(&driver);
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}
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