70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/* $Id: contr.c,v 1.2 1998/10/23 12:50:51 fritz Exp $
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*
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* Functions for dealing with controllers.
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* This stuff is based heavily on AVM's CAPI-adk for linux.
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*
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* 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, or (at your option)
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* any later version.
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* * This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Log: contr.c,v $
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* Revision 1.2 1998/10/23 12:50:51 fritz
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* Added RCS keywords and GPL notice.
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*
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*/
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#include <assert.h>
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#include <sys/time.h>
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#include <linux/capi.h>
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#include <capi20.h>
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#include "contr.h"
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#include "id.h"
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/*
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* GetNumController: Returns the number of controllers detected by CAPI
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*/
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unsigned GetNumController(void) {
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unsigned short Buffer;
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/* retrieve the number of installed controllers */
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CAPI20_GET_PROFILE (0, (unsigned char *)&Buffer);
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return Buffer;
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}
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/*
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* GetNumOfSupportedBChannels: Returns the number of supported B-channels
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* for the specified controller
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*/
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unsigned GetNumOfSupportedBChannels (long Controller) {
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unsigned short Buffer[64 / sizeof (unsigned short)];
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assert (Controller != INVAL_CONTROLLER);
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/* retrieve controller specific information */
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CAPI20_GET_PROFILE((unsigned)Controller, (unsigned char *)Buffer);
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return (unsigned)Buffer[1];
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}
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/*
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* GetFreeController: Returns the number of the first controller that has
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* one free B-channel, or INVAL_CONTROLLER if none found.
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*/
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long GetFreeController(void) {
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long Controller;
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int numController;
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numController = GetNumController ();
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for (Controller = 1; Controller <= numController; Controller++) {
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if (GetNumOfSupportedBChannels (Controller) > GetNumberOfConnections (Controller)) {
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return Controller;
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}
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}
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return INVAL_CONTROLLER;
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}
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