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authorPablo Neira Ayuso <pablo@gnumonks.org>2011-08-17 22:44:07 +0200
committerHarald Welte <laforge@gnumonks.org>2011-08-19 22:38:35 +0200
commited5cacb240b846c106f0fc6a3ab8e8721f4c70a5 (patch)
treeba6bffbf0c95ecc0c50b5335bed77f3a2b29120f /openbsc/src/utils/rs232.c
parent7abecfcfc9ef94c1367cd88ac858b79d20f75db0 (diff)
src: port openBSC over libosmo-abisopenbsc/0.9.150.9.15
This is a big patch that ports openBSC over libosmo-abis. Sorry, the changes that are included here are all dependent of libosmo-abis, splitting them into smaller pieces would leave the repository in some intermediate state, which is not desired. The main changes are: - The directory libabis/ has been removed as it now lives in libosmo-abis. - new configuration file format for nanoBTS and HSL femto, we need to define the virtual e1_line and attach it to the OML link. - all the existing BTS drivers (nanoBTS, hsl femto, Nokia site, BS11 and rbs2000) now use the new libosmo-abis framework. - use r232 input driver available in libosmo-abis for bs11_config. - use ipa_msg_recv instead of old ipaccess_read_msg function. - delete definition of gsm_e1_subslot and input_signal_data. These structures now lives in libosmo-abis. Most of this patch are deletions of libabis/ which has been moved to libosmo-abis. This patch also modifies openBSC to use all the new definitions available in libosmocore and libosmo-abis. In order to do that, we have replaced the following: - DINP, DMI, DMIB and DMUX by their respective DL* correspondences. - SS_GLOBAL by SS_L_GLOBAL - SS_INPUT by SS_L_INPUT - S_GLOBAL_SHUTDOWN by S_L_GLOBAL_SHUTDOWN - SS_INPUT by SS_L_INPUT - S_INP_* by S_L_INP_* sub-signals - E1INP_NODE by L_E1INP_NODE vty node This patch has been tested with: - one nanoBTS - the HSL femto with the examples available under libosmo-abis - BS11 with both dahdi and misdn drivers.
Diffstat (limited to 'openbsc/src/utils/rs232.c')
-rw-r--r--openbsc/src/utils/rs232.c248
1 files changed, 0 insertions, 248 deletions
diff --git a/openbsc/src/utils/rs232.c b/openbsc/src/utils/rs232.c
deleted file mode 100644
index 01b8c7e3..00000000
--- a/openbsc/src/utils/rs232.c
+++ /dev/null
@@ -1,248 +0,0 @@
-/* OpenBSC BS-11 T-Link interface using POSIX serial port */
-
-/* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org>
- *
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation; either version 3 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 Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <termios.h>
-#include <fcntl.h>
-
-#include <osmocom/core/select.h>
-#include <osmocom/core/msgb.h>
-#include <openbsc/debug.h>
-#include <openbsc/gsm_data.h>
-#include <openbsc/rs232.h>
-
-/* adaption layer from GSM 08.59 + 12.21 to RS232 */
-
-struct serial_handle {
- struct osmo_fd fd;
- struct llist_head tx_queue;
-
- struct msgb *rx_msg;
- unsigned int rxmsg_bytes_missing;
-
- unsigned int delay_ms;
- struct gsm_bts *bts;
-};
-
-/* FIXME: this needs to go */
-static struct serial_handle _ser_handle, *ser_handle = &_ser_handle;
-
-#define LAPD_HDR_LEN 10
-
-static int handle_ser_write(struct osmo_fd *bfd);
-
-/* callback from abis_nm */
-int _abis_nm_sendmsg(struct msgb *msg, int to_trx_oml)
-{
- struct serial_handle *sh = ser_handle;
- uint8_t *lapd;
- unsigned int len;
-
- msg->l2h = msg->data;
-
- /* prepend LAPD header */
- lapd = msgb_push(msg, LAPD_HDR_LEN);
-
- len = msg->len - 2;
-
- lapd[0] = (len >> 8) & 0xff;
- lapd[1] = len & 0xff; /* length of bytes startign at lapd[2] */
- lapd[2] = 0x00;
- lapd[3] = 0x07;
- lapd[4] = 0x01;
- lapd[5] = 0x3e;
- lapd[6] = 0x00;
- lapd[7] = 0x00;
- lapd[8] = msg->len - 10; /* length of bytes starting at lapd[10] */
- lapd[9] = lapd[8] ^ 0x38;
-
- msgb_enqueue(&sh->tx_queue, msg);
- sh->fd.when |= BSC_FD_WRITE;
-
- /* we try to immediately send */
- handle_ser_write(&sh->fd);
-
- return 0;
-}
-
-/* select.c callback in case we can write to the RS232 */
-static int handle_ser_write(struct osmo_fd *bfd)
-{
- struct serial_handle *sh = bfd->data;
- struct msgb *msg;
- int written;
-
- msg = msgb_dequeue(&sh->tx_queue);
- if (!msg) {
- bfd->when &= ~BSC_FD_WRITE;
- return 0;
- }
-
- DEBUGP(DMI, "RS232 TX: %s\n", osmo_hexdump(msg->data, msg->len));
-
- /* send over serial line */
- written = write(bfd->fd, msg->data, msg->len);
- if (written < msg->len) {
- perror("short write:");
- msgb_free(msg);
- return -1;
- }
-
- msgb_free(msg);
- usleep(sh->delay_ms*1000);
-
- return 0;
-}
-
-#define SERIAL_ALLOC_SIZE 300
-
-/* select.c callback in case we can read from the RS232 */
-static int handle_ser_read(struct osmo_fd *bfd)
-{
- struct serial_handle *sh = bfd->data;
- struct msgb *msg;
- int rc = 0;
-
- if (!sh->rx_msg) {
- sh->rx_msg = msgb_alloc(SERIAL_ALLOC_SIZE, "RS232 Rx");
- sh->rx_msg->l2h = NULL;
- sh->rx_msg->dst = sh->bts->c0->rsl_link;
- }
- msg = sh->rx_msg;
-
- /* first read two byes to obtain length */
- if (msg->len < 2) {
- rc = read(sh->fd.fd, msg->tail, 2 - msg->len);
- if (rc < 0) {
- perror("ERROR reading from serial port");
- msgb_free(msg);
- return rc;
- }
- msgb_put(msg, rc);
-
- if (msg->len >= 2) {
- /* parse LAPD payload length */
- if (msg->data[0] != 0)
- fprintf(stderr, "Suspicious header byte 0: 0x%02x\n",
- msg->data[0]);
-
- sh->rxmsg_bytes_missing = msg->data[0] << 8;
- sh->rxmsg_bytes_missing += msg->data[1];
-
- if (sh->rxmsg_bytes_missing < LAPD_HDR_LEN -2)
- fprintf(stderr, "Invalid length in hdr: %u\n",
- sh->rxmsg_bytes_missing);
- }
- } else {
- /* try to read as many of the missing bytes as are available */
- rc = read(sh->fd.fd, msg->tail, sh->rxmsg_bytes_missing);
- if (rc < 0) {
- perror("ERROR reading from serial port");
- msgb_free(msg);
- return rc;
- }
- msgb_put(msg, rc);
- sh->rxmsg_bytes_missing -= rc;
-
- if (sh->rxmsg_bytes_missing == 0) {
- /* we have one complete message now */
- sh->rx_msg = NULL;
-
- if (msg->len > LAPD_HDR_LEN)
- msg->l2h = msg->data + LAPD_HDR_LEN;
-
- DEBUGP(DMI, "RS232 RX: %s\n", osmo_hexdump(msg->data, msg->len));
- rc = handle_serial_msg(msg);
- }
- }
-
- return rc;
-}
-
-/* select.c callback */
-static int serial_fd_cb(struct osmo_fd *bfd, unsigned int what)
-{
- int rc = 0;
-
- if (what & BSC_FD_READ)
- rc = handle_ser_read(bfd);
-
- if (rc < 0)
- return rc;
-
- if (what & BSC_FD_WRITE)
- rc = handle_ser_write(bfd);
-
- return rc;
-}
-
-int rs232_setup(const char *serial_port, unsigned int delay_ms,
- struct gsm_bts *bts)
-{
- int rc, serial_fd;
- struct termios tio;
-
- serial_fd = open(serial_port, O_RDWR);
- if (serial_fd < 0) {
- perror("cannot open serial port:");
- return serial_fd;
- }
-
- /* set baudrate */
- rc = tcgetattr(serial_fd, &tio);
- if (rc < 0) {
- perror("tcgetattr()");
- return rc;
- }
- cfsetispeed(&tio, B19200);
- cfsetospeed(&tio, B19200);
- tio.c_cflag |= (CREAD | CLOCAL | CS8);
- tio.c_cflag &= ~(PARENB | CSTOPB | CSIZE | CRTSCTS);
- tio.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
- tio.c_iflag |= (INPCK | ISTRIP);
- tio.c_iflag &= ~(ISTRIP | IXON | IXOFF | IGNBRK | INLCR | ICRNL | IGNCR);
- tio.c_oflag &= ~(OPOST);
- rc = tcsetattr(serial_fd, TCSADRAIN, &tio);
- if (rc < 0) {
- perror("tcsetattr()");
- return rc;
- }
-
- INIT_LLIST_HEAD(&ser_handle->tx_queue);
- ser_handle->fd.fd = serial_fd;
- ser_handle->fd.when = BSC_FD_READ;
- ser_handle->fd.cb = serial_fd_cb;
- ser_handle->fd.data = ser_handle;
- ser_handle->delay_ms = delay_ms;
- ser_handle->bts = bts;
- rc = osmo_fd_register(&ser_handle->fd);
- if (rc < 0) {
- fprintf(stderr, "could not register FD: %s\n",
- strerror(rc));
- return rc;
- }
-
- return 0;
-}