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/*

 * Project: S.Ha.R.K.

 *

 * Coordinators:

 *   Giorgio Buttazzo    <giorgio@sssup.it>

 *   Paolo Gai           <pj@gandalf.sssup.it>

 *

 * Authors     :

 *   Paolo Gai           <pj@gandalf.sssup.it>

 *   Massimiliano Giorgi <massy@gandalf.sssup.it>

 *   Luca Abeni          <luca@gandalf.sssup.it>

 *   (see the web pages for full authors list)

 *

 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)

 *

 * http://www.sssup.it

 * http://retis.sssup.it

 * http://shark.sssup.it

 */

/***************************************

  CVS :        $Id: ideglue.c,v 1.1.1.1 2002-03-29 14:12:49 pj Exp $

  Revision:    $Revision: 1.1.1.1 $

  Last update: $Date: 2002-03-29 14:12:49 $

  This module is used to link the low-level IDE module with

  some kernel specific and particular functionality (it is included

  into idelow.c).

***************************************/

/*

 * Copyright (C) 1999,2000 Massimiliano Giorgi

 *

 * 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 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 */

#include <ll/ll.h>

#include <kernel/func.h>

#include <kernel/model.h>

#include "glue.h"

#include "ide.h"

/* --- */

/*+ the default values for the server task +*/

#define DEFAULT_WCET     200

//#define DEFAULT_MIT      1000

#define DEFAULT_DL       7000 

//#define DEFAULT_WCET     200

////#define DEFAULT_MIT      1000

//#define DEFAULT_DL       2000 

/* --- */

void ide_service_request(int ideif);

/*++++++++++++++++++++++++++++++++++++++

  This is the ide server (a task is created for every interface)

  TASK ide_server

    never return

  int ideif

    interface number (index into ide[])

  ++++++++++++++++++++++++++++++++++++++*/

TASK ide_server(int ideif)

{

  for (;;) {

    task_endcycle();

    ide_service_request(ideif);

  }

  return NULL;

}

/*++++++++++++++++++++++++++++++++++++++

  A request is made to the server (the server is activated).

  int ideif

    interface that own the server

  ++++++++++++++++++++++++++++++++++++++*/

void ide_glue_send_request(int ideif)

{

  task_activate(ide[ideif].server);

}

/*++++++++++++++++++++++++++++++++++++++

  This function activate an interface: create a server task and set the

  irq handler to wake up this server.

  int ide_glue_activate_interface

    return 0 on success, other value on error

  int ideif

    interface to activate

  ++++++++++++++++++++++++++++++++++++++*/

TASK ide_dummy(int x)

{

  for (;;) {

    cprintf("²");

    task_endcycle();

  }

  return NULL;

}

int ide_glue_activate_interface(int ideif)

{

  struct ide_server_model *parms=

    (struct ide_server_model *)ide_parm_initserver;

  char name[32];

  SOFT_TASK_MODEL model;

  TIME dl=DEFAULT_DL;

  //TIME mit=DEFAULT_MIT;

  TIME wcet=DEFAULT_WCET;

  soft_task_default_model(model);    

  if (parms!=NULL) {

    dl=parms->dl;

    //mit=parms->mit;

    wcet=parms->wcet;

  }

  soft_task_def_system(model);

  //hard_task_def_mit(model,mit);

  //hard_task_def_drel(model,dl);

  //hard_task_def_wcet(model,wcet);

  soft_task_def_met(model,wcet);

  soft_task_def_wcet(model,wcet);

  soft_task_def_period(model,dl);

  soft_task_def_system(model);

  soft_task_def_nokill(model);

  soft_task_def_arg(model,(void*)ideif);

  soft_task_def_aperiodic(model);

  /* forse un NO_PREEMPT e' meglio */

  sprintf(name,"ide%i-server",ideif);

  ide[ideif].server=task_create(name,ide_server,&model,NULL);

  if (ide[ideif].server==NIL) {

    if (ide_showinfo_flag)

      printk(IDELOG "ide glue: can't create task");

    return -1;

  }

  /* activate */

  task_activate(ide[ideif].server);

  /* associate an IRQ handler */

  handler_set(ide[ideif].irq,NULL,ide[ideif].server);

  return 0;

}

/*++++++++++++++++++++++++++++++++++++++

  This function unactivate??? an interface: release the irq and

  kill the server task.

  int ideif

    interface to release

  ++++++++++++++++++++++++++++++++++++++*/

void __inline__ ide_glue_unactivate_interface(int ideif)

{

  handler_remove(ide[ideif].irq);

  task_kill(ide[ideif].server);

}