330 lines
10 KiB
C
330 lines
10 KiB
C
/*
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* Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*---------------------------------------------------------------------------
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*
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* i4b daemon - controller state support routines
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* ----------------------------------------------
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*
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* $Id: controller.c,v 1.12 1999/02/15 16:48:04 hm Exp $
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*
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* last edit-date: [Mon Feb 15 16:37:55 1999]
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*
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*---------------------------------------------------------------------------*/
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#include "isdnd.h"
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/*--------------------------------------------------------------------------*
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* init controller state table entry
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*--------------------------------------------------------------------------*/
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int
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init_controller_state(int controller, int ctrl_type, int card_type, int tei)
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{
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if((controller < 0) || (controller >= ncontroller))
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{
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log(LL_ERR, "init_controller_state: invalid controller number [%d]!", controller);
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return(ERROR);
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}
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/* init controller tab */
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if(ctrl_type == CTRL_PASSIVE)
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{
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if((card_type > CARD_TYPEP_UNK) &&
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(card_type <= CARD_TYPEP_MAX))
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{
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isdn_ctrl_tab[controller].ctrl_type = ctrl_type;
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isdn_ctrl_tab[controller].card_type = card_type;
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isdn_ctrl_tab[controller].state = CTRL_UP;
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isdn_ctrl_tab[controller].stateb1 = CHAN_IDLE;
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isdn_ctrl_tab[controller].stateb2 = CHAN_IDLE;
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isdn_ctrl_tab[controller].freechans = MAX_CHANCTRL;
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isdn_ctrl_tab[controller].tei = tei;
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DBGL(DL_RCCF, (log(LL_DBG, "init_controller_state: controller %d is %s",
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controller,
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name_of_controller(isdn_ctrl_tab[controller].ctrl_type,
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isdn_ctrl_tab[controller].card_type))));
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}
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else
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{
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log(LL_ERR, "init_controller_state: unknown card type %d", card_type);
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return(ERROR);
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}
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}
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else if(ctrl_type == CTRL_DAIC)
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{
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isdn_ctrl_tab[controller].ctrl_type = ctrl_type;
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isdn_ctrl_tab[controller].card_type = card_type;
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isdn_ctrl_tab[controller].state = CTRL_DOWN;
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isdn_ctrl_tab[controller].stateb1 = CHAN_IDLE;
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isdn_ctrl_tab[controller].stateb2 = CHAN_IDLE;
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isdn_ctrl_tab[controller].freechans = MAX_CHANCTRL;
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isdn_ctrl_tab[controller].tei = -1;
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log(LL_DMN, "init_controller_state: controller %d is %s",
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controller,
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name_of_controller(isdn_ctrl_tab[controller].ctrl_type,
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isdn_ctrl_tab[controller].card_type));
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}
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else
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{
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/* XXX active controller init here !!! */
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log(LL_ERR, "init_controller_state: unknown controller type %d", ctrl_type);
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return(ERROR);
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}
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return(GOOD);
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}
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/*--------------------------------------------------------------------------*
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* set controller state to UP/DOWN
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*--------------------------------------------------------------------------*/
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int
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set_controller_state(int controller, int state)
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{
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if((controller < 0) || (controller >= ncontroller))
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{
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log(LL_ERR, "set_controller_state: invalid controller number [%d]!", controller);
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return(ERROR);
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}
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if(state == CTRL_UP)
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{
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isdn_ctrl_tab[controller].state = CTRL_UP;
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DBGL(DL_CNST, (log(LL_DBG, "set_controller_state: controller [%d] set UP!", controller)));
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}
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else if (state == CTRL_DOWN)
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{
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isdn_ctrl_tab[controller].state = CTRL_DOWN;
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DBGL(DL_CNST, (log(LL_DBG, "set_controller_state: controller [%d] set DOWN!", controller)));
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}
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else
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{
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log(LL_ERR, "set_controller_state: invalid controller state [%d]!", state);
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return(ERROR);
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}
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return(GOOD);
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}
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/*--------------------------------------------------------------------------*
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* get controller state
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*--------------------------------------------------------------------------*/
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int
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get_controller_state(int controller)
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{
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if((controller < 0) || (controller >= ncontroller))
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{
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log(LL_ERR, "set_controller_state: invalid controller number [%d]!", controller);
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return(ERROR);
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}
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return(isdn_ctrl_tab[controller].state);
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}
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/*--------------------------------------------------------------------------*
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* decrement number of free channels for controller
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*--------------------------------------------------------------------------*/
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int
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decr_free_channels(int controller)
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{
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if((controller < 0) || (controller >= ncontroller))
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{
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log(LL_ERR, "decr_free_channels: invalid controller number [%d]!", controller);
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return(ERROR);
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}
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if(isdn_ctrl_tab[controller].freechans > 0)
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{
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(isdn_ctrl_tab[controller].freechans)--;
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DBGL(DL_CNST, (log(LL_DBG, "decr_free_channels: ctrl %d, now %d chan free", controller, isdn_ctrl_tab[controller].freechans)));
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return(GOOD);
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}
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else
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{
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log(LL_ERR, "decr_free_channels: controller [%d] already 0 free chans!", controller);
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return(ERROR);
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}
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}
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/*--------------------------------------------------------------------------*
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* increment number of free channels for controller
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*--------------------------------------------------------------------------*/
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int
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incr_free_channels(int controller)
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{
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if((controller < 0) || (controller >= ncontroller))
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{
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log(LL_ERR, "incr_free_channels: invalid controller number [%d]!", controller);
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return(ERROR);
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}
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if(isdn_ctrl_tab[controller].freechans < MAX_CHANCTRL)
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{
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(isdn_ctrl_tab[controller].freechans)++;
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DBGL(DL_CNST, (log(LL_DBG, "incr_free_channels: ctrl %d, now %d chan free", controller, isdn_ctrl_tab[controller].freechans)));
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return(GOOD);
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}
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else
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{
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log(LL_ERR, "incr_free_channels: controller [%d] already 2 free chans!", controller);
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return(ERROR);
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}
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}
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/*--------------------------------------------------------------------------*
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* get number of free channels for controller
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*--------------------------------------------------------------------------*/
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int
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get_free_channels(int controller)
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{
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if((controller < 0) || (controller >= ncontroller))
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{
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log(LL_ERR, "get_free_channels: invalid controller number [%d]!", controller);
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return(ERROR);
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}
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DBGL(DL_CNST, (log(LL_DBG, "get_free_channels: ctrl %d, %d chan free", controller, isdn_ctrl_tab[controller].freechans)));
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return(isdn_ctrl_tab[controller].freechans);
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}
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/*--------------------------------------------------------------------------*
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* set channel state to busy
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*--------------------------------------------------------------------------*/
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int
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set_channel_busy(int controller, int channel)
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{
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if((controller < 0) || (controller >= ncontroller))
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{
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log(LL_ERR, "set_channel_busy: invalid controller number [%d]!", controller);
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return(ERROR);
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}
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switch(channel)
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{
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case CHAN_B1:
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if(isdn_ctrl_tab[controller].stateb1 == CHAN_RUN)
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{
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DBGL(DL_CNST, (log(LL_DBG, "set_channel_busy: controller [%d] channel B1 already busy!", controller)));
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}
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else
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{
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isdn_ctrl_tab[controller].stateb1 = CHAN_RUN;
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DBGL(DL_CNST, (log(LL_DBG, "set_channel_busy: controller [%d] channel B1 set to BUSY!", controller)));
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}
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break;
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case CHAN_B2:
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if(isdn_ctrl_tab[controller].stateb2 == CHAN_RUN)
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{
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DBGL(DL_CNST, (log(LL_DBG, "set_channel_busy: controller [%d] channel B2 already busy!", controller)));
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}
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else
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{
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isdn_ctrl_tab[controller].stateb2 = CHAN_RUN;
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DBGL(DL_CNST, (log(LL_DBG, "set_channel_busy: controller [%d] channel B2 set to BUSY!", controller)));
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}
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break;
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default:
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log(LL_ERR, "set_channel_busy: controller [%d], invalid channel [%d]!", controller, channel);
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return(ERROR);
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break;
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}
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return(GOOD);
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}
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/*--------------------------------------------------------------------------*
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* set channel state to idle
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*--------------------------------------------------------------------------*/
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int
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set_channel_idle(int controller, int channel)
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{
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if((controller < 0) || (controller >= ncontroller))
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{
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log(LL_ERR, "set_channel_idle: invalid controller number [%d]!", controller);
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return(ERROR);
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}
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switch(channel)
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{
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case CHAN_B1:
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if(isdn_ctrl_tab[controller].stateb1 == CHAN_IDLE)
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{
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DBGL(DL_CNST, (log(LL_DBG, "set_channel_idle: controller [%d] channel B1 already idle!", controller)));
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}
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else
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{
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isdn_ctrl_tab[controller].stateb1 = CHAN_IDLE;
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DBGL(DL_CNST, (log(LL_DBG, "set_channel_idle: controller [%d] channel B1 set to IDLE!", controller)));
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}
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break;
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case CHAN_B2:
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if(isdn_ctrl_tab[controller].stateb2 == CHAN_IDLE)
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{
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DBGL(DL_CNST, (log(LL_DBG, "set_channel_idle: controller [%d] channel B2 already idle!", controller)));
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}
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else
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{
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isdn_ctrl_tab[controller].stateb2 = CHAN_IDLE;
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DBGL(DL_CNST, (log(LL_DBG, "set_channel_idle: controller [%d] channel B2 set to IDLE!", controller)));
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}
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break;
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default:
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log(LL_ERR, "set_channel_idle: controller [%d], invalid channel [%d]!", controller, channel);
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return(ERROR);
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break;
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}
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return(GOOD);
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}
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/*--------------------------------------------------------------------------*
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* return channel state
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*--------------------------------------------------------------------------*/
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int
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ret_channel_state(int controller, int channel)
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{
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if((controller < 0) || (controller >= ncontroller))
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{
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log(LL_ERR, "ret_channel_state: invalid controller number [%d]!", controller);
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return(ERROR);
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}
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switch(channel)
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{
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case CHAN_B1:
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return(isdn_ctrl_tab[controller].stateb1);
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break;
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case CHAN_B2:
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return(isdn_ctrl_tab[controller].stateb2);
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break;
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default:
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log(LL_ERR, "ret_channel_state: controller [%d], invalid channel [%d]!", controller, channel);
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return(ERROR);
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break;
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}
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return(ERROR);
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}
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/* EOF */
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