/* $Id: diddfunc.c,v 1.1.2.2 2002/10/02 14:38:37 armin Exp $
 *
 * DIDD Interface module for Eicon active cards.
 * 
 * Functions are in dadapter.c 
 * 
 * Copyright 2002 by Armin Schindler (mac@melware.de) 
 * Copyright 2002 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 MAX_DESCRIPTORS  32

#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;
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, 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 = didd_callback;
      req.didd_notify.info.context = 0;
      _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, 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();
}

