<p>Vadim Yanitskiy has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/10828">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">trxcon/l1ctl.c: handle hopping channels from L1CTL_DM_EST_REQ<br><br>Change-Id: I8617b5808748bc4df3d7cc9862ed8cf12613f270<br>---<br>M src/host/trxcon/l1ctl.c<br>1 file changed, 62 insertions(+), 21 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/osmocom-bb refs/changes/28/10828/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/src/host/trxcon/l1ctl.c b/src/host/trxcon/l1ctl.c</span><br><span>index b0a4c6d..026f330 100644</span><br><span>--- a/src/host/trxcon/l1ctl.c</span><br><span>+++ b/src/host/trxcon/l1ctl.c</span><br><span>@@ -526,43 +526,84 @@</span><br><span> return rc;</span><br><span> }</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+static int l1ctl_proc_est_req_h0(struct trx_instance *trx, struct l1ctl_h0 *h)</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ uint16_t band_arfcn;</span><br><span style="color: hsl(120, 100%, 40%);">+ int rc = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ band_arfcn = ntohs(h->band_arfcn);</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ LOGP(DL1C, LOGL_NOTICE, "L1CTL_DM_EST_REQ indicates a single "</span><br><span style="color: hsl(120, 100%, 40%);">+ "ARFCN=%u channel\n", band_arfcn &~ ARFCN_FLAG_MASK);</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Do we need to retune? */</span><br><span style="color: hsl(120, 100%, 40%);">+ if (trx->band_arfcn == band_arfcn)</span><br><span style="color: hsl(120, 100%, 40%);">+ return 0;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Tune transceiver to required ARFCN */</span><br><span style="color: hsl(120, 100%, 40%);">+ rc |= trx_if_cmd_rxtune(trx, band_arfcn);</span><br><span style="color: hsl(120, 100%, 40%);">+ rc |= trx_if_cmd_txtune(trx, band_arfcn);</span><br><span style="color: hsl(120, 100%, 40%);">+ if (rc)</span><br><span style="color: hsl(120, 100%, 40%);">+ return rc;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Update current ARFCN */</span><br><span style="color: hsl(120, 100%, 40%);">+ trx->band_arfcn = band_arfcn;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ return 0;</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+static int l1ctl_proc_est_req_h1(struct trx_instance *trx, struct l1ctl_h1 *h)</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ int rc;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ LOGP(DL1C, LOGL_NOTICE, "L1CTL_DM_EST_REQ indicates a Frequency "</span><br><span style="color: hsl(120, 100%, 40%);">+ "Hopping (hsn=%u, maio=%u, chans=%u) channel\n",</span><br><span style="color: hsl(120, 100%, 40%);">+ h->hsn, h->maio, h->n);</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* No channels?!? */</span><br><span style="color: hsl(120, 100%, 40%);">+ if (!h->n) {</span><br><span style="color: hsl(120, 100%, 40%);">+ LOGP(DL1C, LOGL_ERROR, "No channels in mobile allocation?!?\n");</span><br><span style="color: hsl(120, 100%, 40%);">+ return -EINVAL;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Forward hopping parameters to TRX */</span><br><span style="color: hsl(120, 100%, 40%);">+ rc = trx_if_cmd_setfh(trx, h->hsn, h->maio, h->ma, h->n);</span><br><span style="color: hsl(120, 100%, 40%);">+ if (rc)</span><br><span style="color: hsl(120, 100%, 40%);">+ return rc;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /**</span><br><span style="color: hsl(120, 100%, 40%);">+ * TODO: update the state of trx_instance somehow</span><br><span style="color: hsl(120, 100%, 40%);">+ * in order to indicate that it is in hopping mode...</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+ return 0;</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span> static int l1ctl_rx_dm_est_req(struct l1ctl_link *l1l, struct msgb *msg)</span><br><span> {</span><br><span> enum gsm_phys_chan_config config;</span><br><span> struct l1ctl_dm_est_req *est_req;</span><br><span> struct l1ctl_info_ul *ul;</span><br><span> struct trx_ts *ts;</span><br><span style="color: hsl(0, 100%, 40%);">- uint16_t band_arfcn;</span><br><span> uint8_t chan_nr, tn;</span><br><span style="color: hsl(0, 100%, 40%);">- int rc = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+ int rc;</span><br><span> </span><br><span> ul = (struct l1ctl_info_ul *) msg->l1h;</span><br><span> est_req = (struct l1ctl_dm_est_req *) ul->payload;</span><br><span> </span><br><span style="color: hsl(0, 100%, 40%);">- band_arfcn = ntohs(est_req->h0.band_arfcn);</span><br><span> chan_nr = ul->chan_nr;</span><br><span> tn = chan_nr & 0x07;</span><br><span> </span><br><span style="color: hsl(0, 100%, 40%);">- LOGP(DL1C, LOGL_NOTICE, "Received L1CTL_DM_EST_REQ (arfcn=%u, "</span><br><span style="color: hsl(0, 100%, 40%);">- "tn=%u, chan_nr=0x%02x, tsc=%u, tch_mode=0x%02x)\n",</span><br><span style="color: hsl(0, 100%, 40%);">- (band_arfcn &~ ARFCN_FLAG_MASK), tn, chan_nr,</span><br><span style="color: hsl(0, 100%, 40%);">- est_req->tsc, est_req->tch_mode);</span><br><span style="color: hsl(120, 100%, 40%);">+ LOGP(DL1C, LOGL_NOTICE, "Received L1CTL_DM_EST_REQ "</span><br><span style="color: hsl(120, 100%, 40%);">+ "(tn=%u, chan_nr=0x%02x, tsc=%u, tch_mode=0x%02x)\n",</span><br><span style="color: hsl(120, 100%, 40%);">+ tn, chan_nr, est_req->tsc, est_req->tch_mode);</span><br><span> </span><br><span style="color: hsl(0, 100%, 40%);">- if (est_req->h) {</span><br><span style="color: hsl(0, 100%, 40%);">- LOGP(DL1C, LOGL_ERROR, "FHSS is not supported\n");</span><br><span style="color: hsl(0, 100%, 40%);">- rc = -ENOTSUP;</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Frequency hopping? */</span><br><span style="color: hsl(120, 100%, 40%);">+ if (est_req->h)</span><br><span style="color: hsl(120, 100%, 40%);">+ rc = l1ctl_proc_est_req_h1(l1l->trx, &est_req->h1);</span><br><span style="color: hsl(120, 100%, 40%);">+ else /* Single ARFCN */</span><br><span style="color: hsl(120, 100%, 40%);">+ rc = l1ctl_proc_est_req_h0(l1l->trx, &est_req->h0);</span><br><span style="color: hsl(120, 100%, 40%);">+ if (rc)</span><br><span> goto exit;</span><br><span style="color: hsl(0, 100%, 40%);">- }</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- /* Only if the current ARFCN differs */</span><br><span style="color: hsl(0, 100%, 40%);">- if (l1l->trx->band_arfcn != band_arfcn) {</span><br><span style="color: hsl(0, 100%, 40%);">- /* Update current ARFCN */</span><br><span style="color: hsl(0, 100%, 40%);">- l1l->trx->band_arfcn = band_arfcn;</span><br><span style="color: hsl(0, 100%, 40%);">-</span><br><span style="color: hsl(0, 100%, 40%);">- /* Tune transceiver to required ARFCN */</span><br><span style="color: hsl(0, 100%, 40%);">- trx_if_cmd_rxtune(l1l->trx, band_arfcn);</span><br><span style="color: hsl(0, 100%, 40%);">- trx_if_cmd_txtune(l1l->trx, band_arfcn);</span><br><span style="color: hsl(0, 100%, 40%);">- }</span><br><span> </span><br><span> /* Update TSC (Training Sequence Code) */</span><br><span> l1l->trx->tsc = est_req->tsc;</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/10828">change 10828</a>. 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<div style="display:none"> Gerrit-Project: osmocom-bb </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>
<div style="display:none"> Gerrit-Change-Id: I8617b5808748bc4df3d7cc9862ed8cf12613f270 </div>
<div style="display:none"> Gerrit-Change-Number: 10828 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: Vadim Yanitskiy <axilirator@gmail.com> </div>