sysmobts: Read the model number and trx once from the device

Use it for the ipaccess-find response and for the sysmobts
classification code. This can be used by the vty in a second.

src/osmo-bts-sysmo/misc/sysmobts_mgr.c

@@ -44,11 +44,44 @@
 #include "misc/sysmobts_nl.h"
 #include "misc/sysmobts_par.h"
 
+static int bts_type;
+static int trx_number;
+
 static int no_eeprom_write = 0;
 static int daemonize = 0;
 static const char *cfgfile = "sysmobts-mgr.cfg";
 void *tall_mgr_ctx;
 
+
+static int classify_bts(void)
+{
+	int rc;
+
+	rc = sysmobts_par_get_int(SYSMOBTS_PAR_MODEL_NR, &bts_type);
+	if (rc < 0) {
+		fprintf(stderr, "Failed to get model number.\n");
+		return -1;
+	}
+
+	rc = sysmobts_par_get_int(SYSMOBTS_PAR_TRX_NR, &trx_number);
+	if (rc < 0) {
+		fprintf(stderr, "Failed to get the trx number.\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+int is_sbts2050(void)
+{
+	return bts_type == 2050;
+}
+
+int is_sbts2050_trx(int trx)
+{
+	return trx_number == trx;
+}
+
 static struct osmo_timer_list temp_timer;
 static void check_temp_timer_cb(void *unused)
 {
@@ -221,7 +254,6 @@ static void respond_to(struct sockaddr_in *src, struct osmo_fd *fd,
 
 	if (!fetched_info) {
 		uint8_t mac[6];
-		int val;
 
 		/* fetch the MAC */
 		sysmobts_par_get_buf(SYSMOBTS_PAR_MAC, mac, sizeof(mac));
@@ -230,18 +262,16 @@ static void respond_to(struct sockaddr_in *src, struct osmo_fd *fd,
 				mac[3], mac[4], mac[5]);
 
 		/* fetch the model and trx number */
-		sysmobts_par_get_int(SYSMOBTS_PAR_MODEL_NR, &val);
-		switch(val) {
+		switch(bts_type) {
 		case 0:
 		case 0xffff:
 		case 1002:
 			model_name = "sysmoBTS 1002";
 			break;
 		case 2050:
-			sysmobts_par_get_int(SYSMOBTS_PAR_TRX_NR, &val);
-			if (val == 0)
+			if (trx_number == 0)
 				model_name = "sysmoBTS 2050 (master)";
-			else if (val == 1)
+			else if (trx_number == 1)
 				model_name = "sysmoBTS 2050 (slave)";
 			else
 				model_name = "sysmoBTS 2050 (unknown)";
@@ -322,6 +352,8 @@ int main(int argc, char **argv)
 	msgb_set_talloc_ctx(tall_msgb_ctx);
 
 	mgr_log_init();
+	if (classify_bts() != 0)
+		exit(2);
 
 	osmo_init_ignore_signals();
 	signal(SIGINT, &signal_handler);

src/osmo-bts-sysmo/misc/sysmobts_mgr_2050.c

@@ -313,23 +313,10 @@ static void check_uctemp_timer_cb(void *data)
 
 void sbts2050_uc_initialize(void)
 {
-	int val;
-
-	if (sysmobts_par_get_int(SYSMOBTS_PAR_MODEL_NR, &val) < 0) {
-		LOGP(DTEMP, LOGL_ERROR,
-		     "Failed to get Model number\n");
-		return;
-	}
-
-	if (val != 2050)
+	if (!is_sbts2050())
 		return;
 
-	if (sysmobts_par_get_int(SYSMOBTS_PAR_TRX_NR, &val) < 0) {
-		LOGP(DTEMP, LOGL_ERROR, "Failed to get the TRX number\n");
-		return;
-	}
-
-	if (val != 0)
+	if (!is_sbts2050_trx(0))
 		return;
 
 	ucontrol0.fd = osmo_serial_init(ucontrol0.path, 115200);

src/osmo-bts-sysmo/misc/sysmobts_misc.h

@@ -43,6 +43,9 @@ enum sysmobts_firmware_type {
 int sysmobts_firmware_reload(enum sysmobts_firmware_type type);
 
 
+int is_sbts2050(void);
+int is_sbts2050_trx(int);
+
 void sbts2050_uc_check_temp(int *temp_pa, int *temp_board);
 void sbts2050_uc_set_power(int pmaster, int pslave, int ppa);
 int sbts2050_uc_get_status(enum sbts2050_status_rqt status);