1 files changed, 0 insertions, 297 deletions
diff --git a/src/host/trxcon/sched_lchan_tchf.c b/src/host/trxcon/sched_lchan_tchf.c
deleted file mode 100644
index f2ecdcc6..00000000
--- a/src/host/trxcon/sched_lchan_tchf.c
+++ /dev/null
@@ -1,297 +0,0 @@
-/*
- * OsmocomBB <-> SDR connection bridge
- * TDMA scheduler: handlers for DL / UL bursts on logical channels
- *
- * (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>
- *
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#include <errno.h>
-#include <string.h>
-#include <stdint.h>
-
-#include <osmocom/core/logging.h>
-#include <osmocom/core/bits.h>
-
-#include <osmocom/gsm/protocol/gsm_04_08.h>
-#include <osmocom/gsm/gsm_utils.h>
-
-#include <osmocom/coding/gsm0503_coding.h>
-#include <osmocom/codec/codec.h>
-
-#include "l1ctl_proto.h"
-#include "scheduler.h"
-#include "sched_trx.h"
-#include "logging.h"
-#include "trx_if.h"
-#include "l1ctl.h"
-
-int rx_tchf_fn(struct trx_instance *trx, struct trx_ts *ts,
-	struct trx_lchan_state *lchan, uint32_t fn, uint8_t bid,
-	sbit_t *bits, int8_t rssi, int16_t toa256)
-{
-	const struct trx_lchan_desc *lchan_desc;
-	int n_errors = -1, n_bits_total, rc;
-	sbit_t *buffer, *offset;
-	uint8_t l2[128], *mask;
-	uint32_t *first_fn;
-	size_t l2_len;
-
-	/* Set up pointers */
-	lchan_desc = &trx_lchan_desc[lchan->type];
-	first_fn = &lchan->rx_first_fn;
-	mask = &lchan->rx_burst_mask;
-	buffer = lchan->rx_bursts;
-
-	LOGP(DSCHD, LOGL_DEBUG, "Traffic received on %s: fn=%u ts=%u bid=%u\n",
-		lchan_desc->name, fn, ts->index, bid);
-
-	/* Reset internal state */
-	if (bid == 0) {
-		/* Clean up old measurements */
-		memset(&lchan->meas, 0x00, sizeof(lchan->meas));
-
-		*first_fn = fn;
-		*mask = 0x00;
-	}
-
-	/* Update mask */
-	*mask |= (1 << bid);
-
-	/* Update mask and RSSI */
-	lchan->meas.rssi_sum += rssi;
-	lchan->meas.toa256_sum += toa256;
-	lchan->meas.num++;
-
-	/* Copy burst to end of buffer of 8 bursts */
-	offset = buffer + bid * 116 + 464;
-	memcpy(offset, bits + 3, 58);
-	memcpy(offset + 58, bits + 87, 58);
-
-	/* Wait until complete set of bursts */
-	if (bid != 3)
-		return 0;
-
-	/* Check for complete set of bursts */
-	if ((*mask & 0xf) != 0xf) {
-		LOGP(DSCHD, LOGL_ERROR, "Received incomplete traffic frame at "
-			"fn=%u (%u/%u) for %s\n", *first_fn,
-			(*first_fn) % ts->mf_layout->period,
-			ts->mf_layout->period,
-			lchan_desc->name);
-
-		/* Send BFI */
-		goto bfi;
-	}
-
-	switch (lchan->tch_mode) {
-	case GSM48_CMODE_SIGN:
-	case GSM48_CMODE_SPEECH_V1: /* FR */
-		rc = gsm0503_tch_fr_decode(l2, buffer,
-			1, 0, &n_errors, &n_bits_total);
-		break;
-	case GSM48_CMODE_SPEECH_EFR: /* EFR */
-		rc = gsm0503_tch_fr_decode(l2, buffer,
-			1, 1, &n_errors, &n_bits_total);
-		break;
-	case GSM48_CMODE_SPEECH_AMR: /* AMR */
-		/**
-		 * TODO: AMR requires a dedicated loop,
-		 * which will be implemented later...
-		 */
-		LOGP(DSCHD, LOGL_ERROR, "AMR isn't supported yet\n");
-		return -ENOTSUP;
-	default:
-		LOGP(DSCHD, LOGL_ERROR, "Invalid TCH mode: %u\n", lchan->tch_mode);
-		return -EINVAL;
-	}
-
-	/* Shift buffer by 4 bursts for interleaving */
-	memcpy(buffer, buffer + 464, 464);
-
-	/* Check decoding result */
-	if (rc < 4) {
-		LOGP(DSCHD, LOGL_ERROR, "Received bad TCH frame ending at "
-			"fn=%u for %s\n", fn, lchan_desc->name);
-
-		/* Send BFI */
-		goto bfi;
-	} else if (rc == GSM_MACBLOCK_LEN) {
-		/* FACCH received, forward it to the higher layers */
-		sched_send_dt_ind(trx, ts, lchan, l2, GSM_MACBLOCK_LEN,
-			n_errors, false, false);
-
-		/* Send BFI instead of stolen TCH frame */
-		goto bfi;
-	} else {
-		/* A good TCH frame received */
-		l2_len = rc;
-	}
-
-	/* Send a traffic frame to the higher layers */
-	return sched_send_dt_ind(trx, ts, lchan, l2, l2_len,
-		n_errors, false, true);
-
-bfi:
-	/* Didn't try to decode */
-	if (n_errors < 0)
-		n_errors = 116 * 4;
-
-	/* BFI is not applicable in signalling mode */
-	if (lchan->tch_mode == GSM48_CMODE_SIGN)
-		return sched_send_dt_ind(trx, ts, lchan, NULL, 0,
-			n_errors, true, false);
-
-	/* Bad frame indication */
-	l2_len = sched_bad_frame_ind(l2, lchan);
-
-	/* Send a BFI frame to the higher layers */
-	return sched_send_dt_ind(trx, ts, lchan, l2, l2_len,
-		n_errors, true, true);
-}
-
-int tx_tchf_fn(struct trx_instance *trx, struct trx_ts *ts,
-	struct trx_lchan_state *lchan, uint32_t fn, uint8_t bid)
-{
-	const struct trx_lchan_desc *lchan_desc;
-	ubit_t burst[GSM_BURST_LEN];
-	ubit_t *buffer, *offset;
-	const uint8_t *tsc;
-	uint8_t *mask;
-	size_t l2_len;
-	int rc;
-
-	/* Set up pointers */
-	lchan_desc = &trx_lchan_desc[lchan->type];
-	mask = &lchan->tx_burst_mask;
-	buffer = lchan->tx_bursts;
-
-	/* If we have encoded bursts */
-	if (*mask)
-		goto send_burst;
-
-	/* Wait until a first burst in period */
-	if (bid > 0)
-		return 0;
-
-	/* Check the current TCH mode */
-	switch (lchan->tch_mode) {
-	case GSM48_CMODE_SIGN:
-	case GSM48_CMODE_SPEECH_V1: /* FR */
-		l2_len = GSM_FR_BYTES;
-		break;
-	case GSM48_CMODE_SPEECH_EFR: /* EFR */
-		l2_len = GSM_EFR_BYTES;
-		break;
-	case GSM48_CMODE_SPEECH_AMR: /* AMR */
-		/**
-		 * TODO: AMR requires a dedicated loop,
-		 * which will be implemented later...
-		 */
-		LOGP(DSCHD, LOGL_ERROR, "AMR isn't supported yet, "
-			"dropping frame...\n");
-
-		/* Forget this primitive */
-		sched_prim_drop(lchan);
-
-		return -ENOTSUP;
-	default:
-		LOGP(DSCHD, LOGL_ERROR, "Invalid TCH mode: %u, "
-			"dropping frame...\n", lchan->tch_mode);
-
-		/* Forget this primitive */
-		sched_prim_drop(lchan);
-
-		return -EINVAL;
-	}
-
-	/* Determine and check the payload length */
-	if (lchan->prim->payload_len == GSM_MACBLOCK_LEN) {
-		l2_len = GSM_MACBLOCK_LEN; /* FACCH */
-	} else if (lchan->prim->payload_len != l2_len) {
-		LOGP(DSCHD, LOGL_ERROR, "Primitive has odd length %zu "
-			"(expected %zu for TCH or %u for FACCH), so dropping...\n",
-			lchan->prim->payload_len, l2_len, GSM_MACBLOCK_LEN);
-
-		sched_prim_drop(lchan);
-		return -EINVAL;
-	}
-
-	/* Shift buffer by 4 bursts back for interleaving */
-	memcpy(buffer, buffer + 464, 464);
-
-	/* Encode payload */
-	rc = gsm0503_tch_fr_encode(buffer, lchan->prim->payload, l2_len, 1);
-	if (rc) {
-		LOGP(DSCHD, LOGL_ERROR, "Failed to encode L2 payload (len=%zu): %s\n",
-		     lchan->prim->payload_len, osmo_hexdump(lchan->prim->payload,
-							    lchan->prim->payload_len));
-
-		/* Forget this primitive */
-		sched_prim_drop(lchan);
-
-		return -EINVAL;
-	}
-
-send_burst:
-	/* Determine which burst should be sent */
-	offset = buffer + bid * 116;
-
-	/* Update mask */
-	*mask |= (1 << bid);
-
-	/* Choose proper TSC */
-	tsc = sched_nb_training_bits[trx->tsc];
-
-	/* Compose a new burst */
-	memset(burst, 0, 3); /* TB */
-	memcpy(burst + 3, offset, 58); /* Payload 1/2 */
-	memcpy(burst + 61, tsc, 26); /* TSC */
-	memcpy(burst + 87, offset + 58, 58); /* Payload 2/2 */
-	memset(burst + 145, 0, 3); /* TB */
-
-	LOGP(DSCHD, LOGL_DEBUG, "Transmitting %s fn=%u ts=%u burst=%u\n",
-		lchan_desc->name, fn, ts->index, bid);
-
-	/* Forward burst to scheduler */
-	rc = sched_trx_handle_tx_burst(trx, ts, lchan, fn, burst);
-	if (rc) {
-		/* Forget this primitive */
-		sched_prim_drop(lchan);
-
-		/* Reset mask */
-		*mask = 0x00;
-
-		return rc;
-	}
-
-	/* If we have sent the last (4/4) burst */
-	if (*mask == 0x0f) {
-		/* Confirm data / traffic sending */
-		sched_send_dt_conf(trx, ts, lchan, fn, PRIM_IS_TCH(lchan->prim));
-
-		/* Forget processed primitive */
-		sched_prim_drop(lchan);
-
-		/* Reset mask */
-		*mask = 0x00;
-	}
-
-	return 0;
-}