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osmocom-bb/src/target/firmware/layer1/l23_api.c

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/* Synchronous part of GSM Layer 1: API to Layer2+ */
/* (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
*
* 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.
*
*/
#define DEBUG
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <debug.h>
#include <byteorder.h>
#include <asm/system.h>
#include <osmocom/core/msgb.h>
#include <osmocom/gsm/protocol/gsm_04_08.h>
#include <comm/sercomm.h>
#include <layer1/sync.h>
#include <layer1/async.h>
#include <layer1/mframe_sched.h>
#include <layer1/prim.h>
#include <layer1/tpu_window.h>
#include <layer1/sched_gsmtime.h>
#include <abb/twl3025.h>
#include <rf/trf6151.h>
#include <calypso/sim.h>
#include <calypso/dsp.h>
#include <l1ctl_proto.h>
/* the size we will allocate struct msgb* for HDLC */
#define L3_MSG_HEAD 4
#define L3_MSG_DATA 200
#define L3_MSG_SIZE (L3_MSG_HEAD + sizeof(struct l1ctl_hdr) + L3_MSG_DATA)
void (*l1a_l23_tx_cb)(struct msgb *msg) = NULL;
void l1_queue_for_l2(struct msgb *msg)
{
if (l1a_l23_tx_cb) {
l1a_l23_tx_cb(msg);
return;
}
/* forward via serial for now */
sercomm_sendmsg(SC_DLCI_L1A_L23, msg);
}
enum mf_type {
MFNONE,
MF51,
MF26ODD,
MF26EVEN
};
static uint32_t chan_nr2mf_task_mask(uint8_t chan_nr, uint8_t neigh_mode)
{
uint8_t cbits = chan_nr >> 3;
uint8_t tn = chan_nr & 0x7;
uint8_t lch_idx;
enum mframe_task master_task = 0;
uint32_t neigh_task = 0;
enum mf_type multiframe = 0;
if (cbits == 0x01) {
lch_idx = 0;
master_task = (tn & 1) ? MF_TASK_TCH_F_ODD : MF_TASK_TCH_F_EVEN;
multiframe = (tn & 1) ? MF26ODD : MF26EVEN;
} else if ((cbits & 0x1e) == 0x02) {
lch_idx = cbits & 0x1;
master_task = MF_TASK_TCH_H_0 + lch_idx;
multiframe = (lch_idx & 1) ? MF26ODD : MF26EVEN;
} else if ((cbits & 0x1c) == 0x04) {
lch_idx = cbits & 0x3;
master_task = MF_TASK_SDCCH4_0 + lch_idx;
multiframe = MF51;
} else if ((cbits & 0x18) == 0x08) {
lch_idx = cbits & 0x7;
master_task = MF_TASK_SDCCH8_0 + lch_idx;
multiframe = MF51;
} else if ((cbits & 0x1f) == 0x19) {
/* Osmocom specific extension for CBCH on SDCCH/4 */
master_task = MF_TASK_SDCCH4_CBCH;
multiframe = MF51;
} else if ((cbits & 0x1f) == 0x1a) {
/* Osmocom specific extension for CBCH on SDCCH/8 */
master_task = MF_TASK_SDCCH8_CBCH;
multiframe = MF51;
#if 0
} else if (cbits == 0x10) {
/* FIXME: when to do extended BCCH? */
master_task = MF_TASK_BCCH_NORM;
} else if (cbits == 0x11 || cbits == 0x12) {
/* FIXME: how to decide CCCH norm/extd? */
master_task = MF_TASK_BCCH_CCCH;
#endif
}
switch (neigh_mode) {
case NEIGH_MODE_PM:
switch (multiframe) {
case MF51:
neigh_task = (1 << MF_TASK_NEIGH_PM51);
break;
case MF26EVEN:
neigh_task = (1 << MF_TASK_NEIGH_PM26E);
break;
case MF26ODD:
neigh_task = (1 << MF_TASK_NEIGH_PM26O);
break;
}
break;
}
return (1 << master_task) | neigh_task;
}
static int chan_nr2dchan_type(uint8_t chan_nr)
{
uint8_t cbits = chan_nr >> 3;
if (cbits == 0x01) {
return GSM_DCHAN_TCH_F;
} else if ((cbits & 0x1e) == 0x02) {
return GSM_DCHAN_TCH_H;
} else if ((cbits & 0x1c) == 0x04) {
return GSM_DCHAN_SDCCH_4;
} else if ((cbits & 0x18) == 0x08) {
return GSM_DCHAN_SDCCH_8;
} else if ((cbits & 0x1f) == 0x19) {
/* Osmocom-specific extension for CBCH on SDCCH/4 */
return GSM_DCHAN_SDCCH_4_CBCH;
} else if ((cbits & 0x1f) == 0x1a) {
/* Osmocom-specific extension for CBCH on SDCCH/8 */
return GSM_DCHAN_SDCCH_8_CBCH;
}
return GSM_DCHAN_UNKNOWN;
}
static int chan_nr_is_tch(uint8_t chan_nr)
{
return ((chan_nr >> 3) == 0x01 || /* TCH/F */
((chan_nr >> 3) & 0x1e) == 0x02); /* TCH/H */
}
static void audio_set_enabled(uint8_t tch_mode, uint8_t audio_mode)
{
if (tch_mode == GSM48_CMODE_SIGN) {
twl3025_unit_enable(TWL3025_UNIT_VUL, 0);
twl3025_unit_enable(TWL3025_UNIT_VDL, 0);
} else {
twl3025_unit_enable(TWL3025_UNIT_VUL,
!!(audio_mode & AUDIO_TX_MICROPHONE));
twl3025_unit_enable(TWL3025_UNIT_VDL,
!!(audio_mode & AUDIO_RX_SPEAKER));
}
}
struct msgb *l1ctl_msgb_alloc(uint8_t msg_type)
{
struct msgb *msg;
struct l1ctl_hdr *l1h;
msg = msgb_alloc_headroom(L3_MSG_SIZE, L3_MSG_HEAD, "l1ctl");
if (!msg) {
while (1) {
puts("OOPS. Out of buffers...\n");
}
return NULL;
}
l1h = (struct l1ctl_hdr *) msgb_put(msg, sizeof(*l1h));
l1h->msg_type = msg_type;
l1h->flags = 0;
msg->l1h = (uint8_t *)l1h;
return msg;
}
struct msgb *l1_create_l2_msg(int msg_type, uint32_t fn, uint16_t snr,
uint16_t arfcn)
{
struct l1ctl_info_dl *dl;
struct msgb *msg = l1ctl_msgb_alloc(msg_type);
dl = (struct l1ctl_info_dl *) msgb_put(msg, sizeof(*dl));
dl->frame_nr = htonl(fn);
dl->snr = snr;
dl->band_arfcn = htons(arfcn);
return msg;
}
/* receive a L1CTL_FBSB_REQ from L23 */
static void l1ctl_rx_fbsb_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_fbsb_req *sync_req = (struct l1ctl_fbsb_req *) l1h->data;
if (sizeof(*sync_req) > msg->len) {
printf("Short sync msg. %u\n", msg->len);
return;
}
printd("L1CTL_FBSB_REQ (arfcn=%u, flags=0x%x)\n",
ntohs(sync_req->band_arfcn), sync_req->flags);
/* reset scheduler and hardware */
l1s_reset();
/* pre-set the CCCH mode */
l1s.serving_cell.ccch_mode = sync_req->ccch_mode;
printd("Starting FCCH Recognition\n");
l1s_fbsb_req(1, sync_req);
}
/* receive a L1CTL_DM_EST_REQ from L23 */
static void l1ctl_rx_dm_est_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_info_ul *ul = (struct l1ctl_info_ul *) l1h->data;
struct l1ctl_dm_est_req *est_req = (struct l1ctl_dm_est_req *) ul->payload;
printd("L1CTL_DM_EST_REQ (arfcn=%u, chan_nr=0x%02x, tsc=%u)\n",
ntohs(est_req->h0.band_arfcn), ul->chan_nr, est_req->tsc);
/* disable neighbour cell measurement of C0 TS 0 */
mframe_disable(MF_TASK_NEIGH_PM51_C0T0);
/* configure dedicated channel state */
l1s.dedicated.type = chan_nr2dchan_type(ul->chan_nr);
l1s.dedicated.tsc = est_req->tsc;
l1s.dedicated.tn = ul->chan_nr & 0x7;
l1s.dedicated.h = est_req->h;
if (est_req->h) {
int i;
l1s.dedicated.h1.hsn = est_req->h1.hsn;
l1s.dedicated.h1.maio = est_req->h1.maio;
l1s.dedicated.h1.n = est_req->h1.n;
for (i=0; i<est_req->h1.n; i++)
l1s.dedicated.h1.ma[i] = ntohs(est_req->h1.ma[i]);
} else {
l1s.dedicated.h0.arfcn = ntohs(est_req->h0.band_arfcn);
}
/* TCH config */
if (chan_nr_is_tch(ul->chan_nr)) {
/* Mode */
l1a_tch_mode_set(est_req->tch_mode);
l1a_audio_mode_set(est_req->audio_mode);
/* Sync */
l1s.tch_sync = 1; /* can be set without locking */
/* Audio path */
audio_set_enabled(est_req->tch_mode, est_req->audio_mode);
}
/* figure out which MF tasks to enable */
l1a_mftask_set(chan_nr2mf_task_mask(ul->chan_nr, NEIGH_MODE_PM));
}
/* receive a L1CTL_DM_FREQ_REQ from L23 */
static void l1ctl_rx_dm_freq_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_info_ul *ul = (struct l1ctl_info_ul *) l1h->data;
struct l1ctl_dm_freq_req *freq_req =
(struct l1ctl_dm_freq_req *) ul->payload;
printd("L1CTL_DM_FREQ_REQ (arfcn=%u, tsc=%u)\n",
ntohs(freq_req->h0.band_arfcn), freq_req->tsc);
/* configure dedicated channel state */
l1s.dedicated.st_tsc = freq_req->tsc;
l1s.dedicated.st_h = freq_req->h;
if (freq_req->h) {
int i;
l1s.dedicated.st_h1.hsn = freq_req->h1.hsn;
l1s.dedicated.st_h1.maio = freq_req->h1.maio;
l1s.dedicated.st_h1.n = freq_req->h1.n;
for (i=0; i<freq_req->h1.n; i++)
l1s.dedicated.st_h1.ma[i] = ntohs(freq_req->h1.ma[i]);
} else {
l1s.dedicated.st_h0.arfcn = ntohs(freq_req->h0.band_arfcn);
}
l1a_freq_req(ntohs(freq_req->fn));
}
/* receive a L1CTL_CRYPTO_REQ from L23 */
static void l1ctl_rx_crypto_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_info_ul *ul = (struct l1ctl_info_ul *) l1h->data;
struct l1ctl_crypto_req *cr = (struct l1ctl_crypto_req *) ul->payload;
printd("L1CTL_CRYPTO_REQ (algo=A5/%u, len=%u)\n", cr->algo, cr->key_len);
if (cr->algo && cr->key_len != 8) {
printd("L1CTL_CRYPTO_REQ -> Invalid key\n");
return;
}
dsp_load_ciph_param(cr->algo, cr->key);
}
/* receive a L1CTL_DM_REL_REQ from L23 */
static void l1ctl_rx_dm_rel_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
printd("L1CTL_DM_REL_REQ\n");
l1a_mftask_set(0);
l1s.dedicated.type = GSM_DCHAN_NONE;
l1a_txq_msgb_flush(&l1s.tx_queue[L1S_CHAN_MAIN]);
l1a_txq_msgb_flush(&l1s.tx_queue[L1S_CHAN_SACCH]);
l1a_txq_msgb_flush(&l1s.tx_queue[L1S_CHAN_TRAFFIC]);
l1a_meas_msgb_set(NULL);
dsp_load_ciph_param(0, NULL);
l1a_tch_mode_set(GSM48_CMODE_SIGN);
audio_set_enabled(GSM48_CMODE_SIGN, 0);
l1s.neigh_pm.n = 0;
}
/* receive a L1CTL_PARAM_REQ from L23 */
static void l1ctl_rx_param_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_info_ul *ul = (struct l1ctl_info_ul *) l1h->data;
struct l1ctl_par_req *par_req = (struct l1ctl_par_req *) ul->payload;
printd("L1CTL_PARAM_REQ (ta=%d, tx_power=%u)\n", par_req->ta,
par_req->tx_power);
l1s.ta = par_req->ta;
l1s.tx_power = par_req->tx_power;
}
/* receive a L1CTL_RACH_REQ from L23 */
static void l1ctl_rx_rach_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_info_ul *ul = (struct l1ctl_info_ul *) l1h->data;
struct l1ctl_rach_req *rach_req = (struct l1ctl_rach_req *) ul->payload;
printd("L1CTL_RACH_REQ (ra=0x%02x, offset=%d combined=%d)\n",
rach_req->ra, ntohs(rach_req->offset), rach_req->combined);
l1a_rach_req(ntohs(rach_req->offset), rach_req->combined,
rach_req->ra);
}
/* receive a L1CTL_DATA_REQ from L23 */
static void l1ctl_rx_data_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_info_ul *ul = (struct l1ctl_info_ul *) l1h->data;
struct l1ctl_data_ind *data_ind = (struct l1ctl_data_ind *) ul->payload;
struct llist_head *tx_queue;
printd("L1CTL_DATA_REQ (link_id=0x%02x)\n", ul->link_id);
msg->l3h = data_ind->data;
if (ul->link_id & 0x40) {
struct gsm48_hdr *gh = (struct gsm48_hdr *)(data_ind->data + 5);
if (gh->proto_discr == GSM48_PDISC_RR
&& gh->msg_type == GSM48_MT_RR_MEAS_REP) {
printd("updating measurement report\n");
l1a_meas_msgb_set(msg);
return;
}
tx_queue = &l1s.tx_queue[L1S_CHAN_SACCH];
} else
tx_queue = &l1s.tx_queue[L1S_CHAN_MAIN];
printd("ul=%p, ul->payload=%p, data_ind=%p, data_ind->data=%p l3h=%p\n",
ul, ul->payload, data_ind, data_ind->data, msg->l3h);
l1a_txq_msgb_enq(tx_queue, msg);
}
/* receive a L1CTL_PM_REQ from L23 */
static void l1ctl_rx_pm_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_pm_req *pm_req = (struct l1ctl_pm_req *) l1h->data;
switch (pm_req->type) {
case 1:
l1s.pm.mode = 1;
l1s.pm.range.arfcn_start =
ntohs(pm_req->range.band_arfcn_from);
l1s.pm.range.arfcn_next =
ntohs(pm_req->range.band_arfcn_from);
l1s.pm.range.arfcn_end =
ntohs(pm_req->range.band_arfcn_to);
printf("L1CTL_PM_REQ start=%u end=%u\n",
l1s.pm.range.arfcn_start, l1s.pm.range.arfcn_end);
break;
}
l1s_reset_hw(); /* must reset, otherwise measurement results are delayed */
l1s_pm_test(1, l1s.pm.range.arfcn_next);
}
/* Transmit a L1CTL_RESET_IND or L1CTL_RESET_CONF */
void l1ctl_tx_reset(uint8_t msg_type, uint8_t reset_type)
{
struct msgb *msg = l1ctl_msgb_alloc(msg_type);
struct l1ctl_reset *reset_resp;
reset_resp = (struct l1ctl_reset *)
msgb_put(msg, sizeof(*reset_resp));
reset_resp->type = reset_type;
l1_queue_for_l2(msg);
}
/* receive a L1CTL_RESET_REQ from L23 */
static void l1ctl_rx_reset_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_reset *reset_req =
(struct l1ctl_reset *) l1h->data;
switch (reset_req->type) {
case L1CTL_RES_T_FULL:
printf("L1CTL_RESET_REQ: FULL!\n");
l1s_reset();
l1s_reset_hw();
audio_set_enabled(GSM48_CMODE_SIGN, 0);
l1ctl_tx_reset(L1CTL_RESET_CONF, reset_req->type);
break;
case L1CTL_RES_T_SCHED:
printf("L1CTL_RESET_REQ: SCHED!\n");
l1ctl_tx_reset(L1CTL_RESET_CONF, reset_req->type);
sched_gsmtime_reset();
break;
default:
printf("unknown L1CTL_RESET_REQ type\n");
break;
}
}
/* Transmit a L1CTL_CCCH_MODE_CONF */
static void l1ctl_tx_ccch_mode_conf(uint8_t ccch_mode)
{
struct msgb *msg = l1ctl_msgb_alloc(L1CTL_CCCH_MODE_CONF);
struct l1ctl_ccch_mode_conf *mode_conf;
mode_conf = (struct l1ctl_ccch_mode_conf *)
msgb_put(msg, sizeof(*mode_conf));
mode_conf->ccch_mode = ccch_mode;
l1_queue_for_l2(msg);
}
/* receive a L1CTL_CCCH_MODE_REQ from L23 */
static void l1ctl_rx_ccch_mode_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_ccch_mode_req *ccch_mode_req =
(struct l1ctl_ccch_mode_req *) l1h->data;
uint8_t ccch_mode = ccch_mode_req->ccch_mode;
/* pre-set the CCCH mode */
l1s.serving_cell.ccch_mode = ccch_mode;
/* Update task */
mframe_disable(MF_TASK_CCCH_COMB);
mframe_disable(MF_TASK_CCCH);
if (ccch_mode == CCCH_MODE_COMBINED)
mframe_enable(MF_TASK_CCCH_COMB);
else if (ccch_mode == CCCH_MODE_NON_COMBINED)
mframe_enable(MF_TASK_CCCH);
else if (ccch_mode == CCCH_MODE_COMBINED_CBCH) {
mframe_enable(MF_TASK_CCCH_COMB);
mframe_enable(MF_TASK_SDCCH4_CBCH);
}
l1ctl_tx_ccch_mode_conf(ccch_mode);
}
/* Transmit a L1CTL_TCH_MODE_CONF */
static void l1ctl_tx_tch_mode_conf(uint8_t tch_mode, uint8_t audio_mode)
{
struct msgb *msg = l1ctl_msgb_alloc(L1CTL_TCH_MODE_CONF);
struct l1ctl_tch_mode_conf *mode_conf;
mode_conf = (struct l1ctl_tch_mode_conf *)
msgb_put(msg, sizeof(*mode_conf));
mode_conf->tch_mode = tch_mode;
mode_conf->audio_mode = audio_mode;
l1_queue_for_l2(msg);
}
/* receive a L1CTL_TCH_MODE_REQ from L23 */
static void l1ctl_rx_tch_mode_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_tch_mode_req *tch_mode_req =
(struct l1ctl_tch_mode_req *) l1h->data;
uint8_t tch_mode = tch_mode_req->tch_mode;
uint8_t audio_mode = tch_mode_req->audio_mode;
printd("L1CTL_TCH_MODE_REQ (tch_mode=0x%02x audio_mode=0x%02x)\n",
tch_mode, audio_mode);
tch_mode = l1a_tch_mode_set(tch_mode);
audio_mode = l1a_audio_mode_set(audio_mode);
audio_set_enabled(tch_mode, audio_mode);
l1s.tch_sync = 1; /* Needed for audio to work */
l1ctl_tx_tch_mode_conf(tch_mode, audio_mode);
}
/* receive a L1CTL_NEIGH_PM_REQ from L23 */
static void l1ctl_rx_neigh_pm_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_neigh_pm_req *pm_req =
(struct l1ctl_neigh_pm_req *) l1h->data;
int i;
/* reset list in order to prevent race condition */
l1s.neigh_pm.n = 0; /* atomic */
l1s.neigh_pm.second = 0;
/* now reset pointer and fill list */
l1s.neigh_pm.pos = 0;
l1s.neigh_pm.running = 0;
for (i = 0; i < pm_req->n; i++) {
l1s.neigh_pm.band_arfcn[i] = ntohs(pm_req->band_arfcn[i]);
l1s.neigh_pm.tn[i] = pm_req->tn[i];
}
printf("L1CTL_NEIGH_PM_REQ new list with %u entries\n", pm_req->n);
l1s.neigh_pm.n = pm_req->n; /* atomic */
/* on C0 enable PM on frame 51 */
if (l1s.dedicated.type == GSM_DCHAN_NONE)
mframe_enable(MF_TASK_NEIGH_PM51_C0T0);
}
/* receive a L1CTL_TRAFFIC_REQ from L23 */
static void l1ctl_rx_traffic_req(struct msgb *msg)
{
struct l1ctl_hdr *l1h = (struct l1ctl_hdr *) msg->data;
struct l1ctl_info_ul *ul = (struct l1ctl_info_ul *) l1h->data;
struct l1ctl_traffic_req *tr = (struct l1ctl_traffic_req *) ul->payload;
int num = 0;
/* printd("L1CTL_TRAFFIC_REQ\n"); */ /* Very verbose, can overwhelm serial */
msg->l2h = tr->data;
num = l1a_txq_msgb_count(&l1s.tx_queue[L1S_CHAN_TRAFFIC]);
if (num >= 4) {
printd("dropping traffic frame\n");
msgb_free(msg);
return;
}
l1a_txq_msgb_enq(&l1s.tx_queue[L1S_CHAN_TRAFFIC], msg);
}
static void l1ctl_sim_req(struct msgb *msg)
{
uint16_t len = msg->len - sizeof(struct l1ctl_hdr);
uint8_t *data = msg->data + sizeof(struct l1ctl_hdr);
#if 1 /* for debugging only */
{
int i;
printf("SIM Request (%u): ", len);
for (i = 0; i < len; i++)
printf("%02x ", data[i]);
puts("\n");
}
#endif
sim_apdu(len, data);
}
static struct llist_head l23_rx_queue = LLIST_HEAD_INIT(l23_rx_queue);
/* callback from SERCOMM when L2 sends a message to L1 */
void l1a_l23_rx(uint8_t dlci, struct msgb *msg)
{
unsigned long flags;
local_firq_save(flags);
msgb_enqueue(&l23_rx_queue, msg);
local_irq_restore(flags);
}
void l1a_l23_handler(void)
{
struct msgb *msg;
struct l1ctl_hdr *l1h;
unsigned long flags;
local_firq_save(flags);
msg = msgb_dequeue(&l23_rx_queue);
local_irq_restore(flags);
if (!msg)
return;
l1h = (struct l1ctl_hdr *) msg->data;
#if 0
{
int i;
printf("l1a_l23_rx_cb (%u): ", msg->len);
for (i = 0; i < msg->len; i++)
printf("%02x ", msg->data[i]);
puts("\n");
}
#endif
msg->l1h = msg->data;
if (sizeof(*l1h) > msg->len) {
printf("l1a_l23_cb: Short message. %u\n", msg->len);
goto exit_msgbfree;
}
switch (l1h->msg_type) {
case L1CTL_FBSB_REQ:
l1ctl_rx_fbsb_req(msg);
break;
case L1CTL_DM_EST_REQ:
l1ctl_rx_dm_est_req(msg);
break;
case L1CTL_DM_REL_REQ:
l1ctl_rx_dm_rel_req(msg);
break;
case L1CTL_PARAM_REQ:
l1ctl_rx_param_req(msg);
break;
case L1CTL_DM_FREQ_REQ:
l1ctl_rx_dm_freq_req(msg);
break;
case L1CTL_CRYPTO_REQ:
l1ctl_rx_crypto_req(msg);
break;
case L1CTL_RACH_REQ:
l1ctl_rx_rach_req(msg);
break;
case L1CTL_DATA_REQ:
l1ctl_rx_data_req(msg);
/* we have to keep the msgb, not free it! */
goto exit_nofree;
case L1CTL_PM_REQ:
l1ctl_rx_pm_req(msg);
break;
case L1CTL_RESET_REQ:
l1ctl_rx_reset_req(msg);
break;
case L1CTL_CCCH_MODE_REQ:
l1ctl_rx_ccch_mode_req(msg);
break;
case L1CTL_TCH_MODE_REQ:
l1ctl_rx_tch_mode_req(msg);
break;
case L1CTL_NEIGH_PM_REQ:
l1ctl_rx_neigh_pm_req(msg);
break;
case L1CTL_TRAFFIC_REQ:
l1ctl_rx_traffic_req(msg);
/* we have to keep the msgb, not free it! */
goto exit_nofree;
case L1CTL_SIM_REQ:
l1ctl_sim_req(msg);
break;
}
exit_msgbfree:
msgb_free(msg);
exit_nofree:
return;
}
void l1a_l23api_init(void)
{
sercomm_register_rx_cb(SC_DLCI_L1A_L23, l1a_l23_rx);
}
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