diff options
author | Pablo Neira Ayuso <pablo@gnumonks.org> | 2011-08-17 22:44:07 +0200 |
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committer | Harald Welte <laforge@gnumonks.org> | 2011-08-19 22:38:35 +0200 |
commit | ed5cacb240b846c106f0fc6a3ab8e8721f4c70a5 (patch) | |
tree | ba6bffbf0c95ecc0c50b5335bed77f3a2b29120f /openbsc/src/utils/rs232.c | |
parent | 7abecfcfc9ef94c1367cd88ac858b79d20f75db0 (diff) |
src: port openBSC over libosmo-abisopenbsc/0.9.15
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.c | 248 |
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 01b8c7e33..000000000 --- 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; -} |