NetBSD-5.0.2/usr.sbin/isdn/isdnd/controller.c
/*
* Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*---------------------------------------------------------------------------
*
* i4b daemon - controller state support routines
* ----------------------------------------------
*
* $Id: controller.c,v 1.9 2004/03/28 20:49:22 pooka Exp $
*
* $FreeBSD$
*
* last edit-date: [Mon Oct 9 14:37:34 2000]
*
*---------------------------------------------------------------------------*/
#include <sys/types.h>
#include <sys/mman.h>
#include <fcntl.h>
#include "isdnd.h"
static int
init_controller_state(int controller, const char *devname, const char *cardname, int tei, int nbch);
/*
* add a single controller
*/
void
init_new_controller(int isdnif)
{
msg_ctrl_info_req_t mcir;
memset(&mcir, 0, sizeof mcir);
mcir.controller = isdnif;
if ((ioctl(isdnfd, I4B_CTRL_INFO_REQ, &mcir)) < 0)
return;
if ((init_controller_state(isdnif, mcir.devname, mcir.cardname, mcir.tei, mcir.nbch)) == ERROR)
{
logit(LL_ERR, "init_new_controller: init_controller_state for controller %d failed", isdnif);
do_exit(1);
}
}
/*---------------------------------------------------------------------------*
* init controller state array
*---------------------------------------------------------------------------*/
void
init_controller(void)
{
int i;
int max = 0;
msg_ctrl_info_req_t mcir;
remove_all_ctrl_state();
for (i=0; i <= max; i++)
{
mcir.controller = i;
if ((ioctl(isdnfd, I4B_CTRL_INFO_REQ, &mcir)) < 0)
continue;
max = mcir.max_isdnif;
/* init controller tab */
if ((init_controller_state(i, mcir.devname, mcir.cardname, mcir.tei, mcir.nbch)) == ERROR)
{
logit(LL_ERR, "init_controller: init_controller_state for controller %d failed", i);
do_exit(1);
}
}
DBGL(DL_RCCF, (logit(LL_DBG, "init_controller: found %d ISDN controller(s)", max)));
}
/*--------------------------------------------------------------------------*
* init controller state table entry
*--------------------------------------------------------------------------*/
static int
init_controller_state(int controller, const char *devname, const char *cardname, int tei, int nbch)
{
struct isdn_ctrl_state *ctrl;
int i;
ctrl = malloc(sizeof *ctrl);
if (ctrl == NULL) {
logit(LL_ERR, "init_controller_state: out of memory");
return(ERROR);
}
/* init controller state entry */
memset(ctrl, 0, sizeof *ctrl);
strncpy(ctrl->device_name,
devname,
sizeof(ctrl->device_name)-1);
strncpy(ctrl->controller,
cardname,
sizeof(ctrl->controller)-1);
ctrl->isdnif = controller;
ctrl->protocol = PROTOCOL_DSS1;
ctrl->state = CTRL_UP;
ctrl->nbch = nbch;
for (i = 0; i < ctrl->nbch; i++)
ctrl->stateb[i] = CHAN_IDLE;
ctrl->freechans = MAX_CHANCTRL;
ctrl->tei = tei;
ctrl->l1stat = LAYER_IDLE;
ctrl->l2stat = LAYER_IDLE;
ctrl->firmware = NULL;
DBGL(DL_RCCF, (logit(LL_DBG, "init_controller_state: controller %d (%s) is %s",
controller, devname, cardname)));
/* add to list */
add_ctrl_state(ctrl);
return(GOOD);
}
/*--------------------------------------------------------------------------*
* init active controller
*--------------------------------------------------------------------------*/
void
init_active_controller(void)
{
struct isdn_ctrl_state *cst = NULL;
int ret, fd;
int i, numctrl;
#if 0
/* XXX - replace by something useful */
int controller;
char cmdbuf[MAXPATHLEN+128];
for (controller = 0; controller < ncontroller; controller++)
{
if (isdn_ctrl_tab[controller].ctrl_type == CTRL_TINADD)
{
DBGL(DL_RCCF, (logit(LL_DBG, "init_active_controller, tina-dd %d: executing [%s %d]", unit, tinainitprog, unit)));
snprintf(cmdbuf, sizeof(cmdbuf), "%s %d", tinainitprog, unit);
if ((ret = system(cmdbuf)) != 0)
{
logit(LL_ERR, "init_active_controller, tina-dd %d: %s returned %d!", unit, tinainitprog, ret);
do_exit(1);
}
}
}
#endif
numctrl = count_ctrl_states();
for (cst = get_first_ctrl_state(), i = 0;
i < numctrl;
cst = find_ctrl_state(i++)) {
/*
* Generic microcode loading. If a controller has
* defined a microcode file, load it using the
* I4B_CTRL_DOWNLOAD ioctl.
*/
if (cst->firmware != NULL) {
struct isdn_dr_prot idp;
struct isdn_download_request idr;
fd = open(cst->firmware, O_RDONLY);
if (fd < 0) {
logit(LL_ERR, "init_active_controller %d: "
"open %s: %s!", cst->isdnif, cst->firmware,
strerror(errno));
do_exit(1);
}
idp.bytecount = lseek(fd, 0, SEEK_END);
idp.microcode = mmap(0, idp.bytecount, PROT_READ,
MAP_SHARED, fd, 0);
if (idp.microcode == MAP_FAILED) {
logit(LL_ERR, "init_active_controller %d: "
"mmap %s: %s!", cst->isdnif, cst->firmware,
strerror(errno));
do_exit(1);
}
DBGL(DL_RCCF, (logit(LL_DBG, "init_active_controller "
"%d: loading firmware from [%s]", cst->isdnif,
cst->firmware)));
idr.controller = cst->isdnif;
idr.numprotos = 1;
idr.protocols = &idp;
ret = ioctl(isdnfd, I4B_CTRL_DOWNLOAD, &idr,
sizeof(idr));
if (ret) {
logit(LL_ERR, "init_active_controller %d: "
"load %s: %s!", cst->isdnif, cst->firmware,
strerror(errno));
do_exit(1);
}
munmap(idp.microcode, idp.bytecount);
close(fd);
}
}
}
void
init_single_controller_protocol ( struct isdn_ctrl_state *ctrl )
{
msg_prot_ind_t mpi;
memset(&mpi, 0, sizeof mpi);
mpi.controller = ctrl->isdnif;
mpi.protocol = ctrl->protocol;
if ((ioctl(isdnfd, I4B_PROT_IND, &mpi)) < 0)
{
logit(LL_ERR, "init_single_controller_protocol: ioctl I4B_PROT_IND failed: %s", strerror(errno));
do_exit(1);
}
}
/*--------------------------------------------------------------------------*
* init controller D-channel ISDN protocol
*--------------------------------------------------------------------------*/
void
init_controller_protocol(void)
{
struct isdn_ctrl_state *ctrl;
for (ctrl = get_first_ctrl_state(); ctrl; ctrl = NEXT_CTRL(ctrl))
init_single_controller_protocol(ctrl);
}
/*--------------------------------------------------------------------------*
* set controller state to UP/DOWN
*--------------------------------------------------------------------------*/
int
set_controller_state(struct isdn_ctrl_state *ctrl, int state)
{
if (ctrl == NULL) {
logit(LL_ERR, "set_controller_state: invalid controller");
return(ERROR);
}
if (state == CTRL_UP) {
ctrl->state = CTRL_UP;
DBGL(DL_CNST, (logit(LL_DBG, "set_controller_state: controller [%d] set UP!", ctrl->isdnif)));
}
else if (state == CTRL_DOWN)
{
ctrl->state = CTRL_DOWN;
DBGL(DL_CNST, (logit(LL_DBG, "set_controller_state: controller [%d] set DOWN!", ctrl->isdnif)));
}
else
{
logit(LL_ERR, "set_controller_state: invalid controller state [%d]!", state);
return(ERROR);
}
return(GOOD);
}
/*--------------------------------------------------------------------------*
* get controller state
*--------------------------------------------------------------------------*/
int
get_controller_state(struct isdn_ctrl_state *ctrl)
{
if (ctrl == NULL) {
logit(LL_ERR, "set_controller_state: invalid controller");
return(ERROR);
}
return (ctrl->state);
}
/*--------------------------------------------------------------------------*
* decrement number of free channels for controller
*--------------------------------------------------------------------------*/
int
decr_free_channels(struct isdn_ctrl_state *ctrl)
{
if (ctrl == NULL) {
logit(LL_ERR, "decr_free_channels: invalid controller!");
return(ERROR);
}
if (ctrl->freechans > 0)
{
ctrl->freechans--;
DBGL(DL_CNST, (logit(LL_DBG, "decr_free_channels: ctrl %d, now %d chan free", ctrl->isdnif, ctrl->freechans)));
return(GOOD);
}
else
{
logit(LL_ERR, "decr_free_channels: controller [%d] already 0 free chans!", ctrl->isdnif);
return(ERROR);
}
}
/*--------------------------------------------------------------------------*
* increment number of free channels for controller
*--------------------------------------------------------------------------*/
int
incr_free_channels(struct isdn_ctrl_state *ctrl)
{
if (ctrl == NULL) {
logit(LL_ERR, "incr_free_channels: invalid controller!");
return(ERROR);
}
if (ctrl->freechans < MAX_CHANCTRL)
{
ctrl->freechans++;
DBGL(DL_CNST, (logit(LL_DBG, "incr_free_channels: ctrl %d, now %d chan free", ctrl->isdnif, ctrl->freechans)));
return(GOOD);
}
else
{
logit(LL_ERR, "incr_free_channels: controller [%d] already 2 free chans!", ctrl->isdnif);
return(ERROR);
}
}
/*--------------------------------------------------------------------------*
* get number of free channels for controller
*--------------------------------------------------------------------------*/
int
get_free_channels(struct isdn_ctrl_state *ctrl)
{
if (ctrl == NULL) {
logit(LL_ERR, "get_free_channels: invalid controller!");
return(ERROR);
}
DBGL(DL_CNST, (logit(LL_DBG, "get_free_channels: ctrl %d, %d chan free", ctrl->isdnif, ctrl->freechans)));
return (ctrl->freechans);
}
/*--------------------------------------------------------------------------*
* set channel state to busy
*--------------------------------------------------------------------------*/
int
set_channel_busy(struct isdn_ctrl_state *ctrl, int channel)
{
if (ctrl == NULL) {
logit(LL_ERR, "set_channel_busy: invalid controller");
return(ERROR);
}
if (channel < 0 || channel >= ctrl->nbch)
{
DBGL(DL_CNST, (logit(LL_DBG, "set_channel_busy: controller [%d] invalid channel %d", ctrl->isdnif, channel)));
return(ERROR);
}
if (ctrl->stateb[channel] == CHAN_RUN)
{
DBGL(DL_CNST, (logit(LL_DBG, "set_channel_busy: controller [%d] channel B%d already busy!", ctrl->isdnif, channel)));
}
else
{
ctrl->stateb[channel] = CHAN_RUN;
DBGL(DL_CNST, (logit(LL_DBG, "set_channel_busy: controller [%d] channel B%d set to BUSY!", ctrl->isdnif, channel)));
}
return(GOOD);
}
/*--------------------------------------------------------------------------*
* set channel state to idle
*--------------------------------------------------------------------------*/
int
set_channel_idle(struct isdn_ctrl_state *ctrl, int channel)
{
if (ctrl == NULL) {
logit(LL_ERR, "set_channel_idle: invalid controller");
return(ERROR);
}
if (channel < 0 || channel >= ctrl->nbch)
{
DBGL(DL_CNST, (logit(LL_DBG, "set_channel_idle: controller [%d] invalid channel %d", ctrl->isdnif, channel)));
return(ERROR);
}
if (ctrl->stateb[channel] == CHAN_IDLE)
{
DBGL(DL_CNST, (logit(LL_DBG, "set_channel_idle: controller [%d] channel B%d already idle!", ctrl->isdnif, channel)));
}
else
{
ctrl->stateb[channel] = CHAN_IDLE;
DBGL(DL_CNST, (logit(LL_DBG, "set_channel_idle: controller [%d] channel B%d set to IDLE!", ctrl->isdnif, channel)));
}
return(GOOD);
}
/*--------------------------------------------------------------------------*
* return channel state
*--------------------------------------------------------------------------*/
int
ret_channel_state(struct isdn_ctrl_state *ctrl, int channel)
{
if (ctrl == NULL) {
logit(LL_ERR, "ret_channel_state: invalid controller!");
return(ERROR);
}
if (channel < 0 || channel >= ctrl->nbch) {
logit(LL_ERR, "ret_channel_state: controller [%d], invalid channel [%d]!", ctrl->isdnif, channel);
return(ERROR);
}
else
{
return (ctrl->stateb[channel]);
}
}
/* EOF */