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diddfunc.c

/* $Id: diddfunc.c,v 1.14.6.2 2004/08/28 20:03:53 armin Exp $
 *
 * DIDD Interface module for Eicon active cards.
 * 
 * Functions are in dadapter.c 
 * 
 * Copyright 2002-2003 by Armin Schindler (mac@melware.de) 
 * Copyright 2002-2003 Cytronics & Melware (info@melware.de)
 * 
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 */

#include "platform.h"
#include "di_defs.h"
#include "dadapter.h"
#include "divasync.h"

#define DBG_MINIMUM  (DL_LOG + DL_FTL + DL_ERR)
#define DBG_DEFAULT  (DBG_MINIMUM + DL_XLOG + DL_REG)


extern void DIVA_DIDD_Read(void *, int);
extern char *DRIVERRELEASE_DIDD;
static dword notify_handle;
static DESCRIPTOR _DAdapter;

/*
 * didd callback function
 */
static void *didd_callback(void *context, DESCRIPTOR * adapter,
                     int removal)
{
      if (adapter->type == IDI_DADAPTER) {
            DBG_ERR(("Notification about IDI_DADAPTER change ! Oops."))
            return (NULL);
      } else if (adapter->type == IDI_DIMAINT) {
            if (removal) {
                  DbgDeregister();
            } else {
                  DbgRegister("DIDD", DRIVERRELEASE_DIDD, DBG_DEFAULT);
            }
      }
      return (NULL);
}

/*
 * connect to didd
 */
static int DIVA_INIT_FUNCTION connect_didd(void)
{
      int x = 0;
      int dadapter = 0;
      IDI_SYNC_REQ req;
      DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];

      DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));

      for (x = 0; x < MAX_DESCRIPTORS; x++) {
            if (DIDD_Table[x].type == IDI_DADAPTER) { /* DADAPTER found */
                  dadapter = 1;
                  memcpy(&_DAdapter, &DIDD_Table[x], sizeof(_DAdapter));
                  req.didd_notify.e.Req = 0;
                  req.didd_notify.e.Rc =
                      IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY;
                  req.didd_notify.info.callback = (void *)didd_callback;
                  req.didd_notify.info.context = NULL;
                  _DAdapter.request((ENTITY *) & req);
                  if (req.didd_notify.e.Rc != 0xff)
                        return (0);
                  notify_handle = req.didd_notify.info.handle;
            } else if (DIDD_Table[x].type == IDI_DIMAINT) { /* MAINT found */
                  DbgRegister("DIDD", DRIVERRELEASE_DIDD, DBG_DEFAULT);
            }
      }
      return (dadapter);
}

/*
 * disconnect from didd
 */
static void DIVA_EXIT_FUNCTION disconnect_didd(void)
{
      IDI_SYNC_REQ req;

      req.didd_notify.e.Req = 0;
      req.didd_notify.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY;
      req.didd_notify.info.handle = notify_handle;
      _DAdapter.request((ENTITY *) & req);
}

/*
 * init
 */
int DIVA_INIT_FUNCTION diddfunc_init(void)
{
      diva_didd_load_time_init();

      if (!connect_didd()) {
            DBG_ERR(("init: failed to connect to DIDD."))
            diva_didd_load_time_finit();
            return (0);
      }
      return (1);
}

/*
 * finit
 */
void DIVA_EXIT_FUNCTION diddfunc_finit(void)
{
      DbgDeregister();
      disconnect_didd();
      diva_didd_load_time_finit();
}

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