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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>
 *   (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: iaster7.c,v 1.8 2006-07-03 12:57:33 tullio Exp $

 File:        $File$
 Revision:    $Revision: 1.8 $
 Last update: $Date: 2006-07-03 12:57:33 $
 ------------

 System initialization file

 The tick is set to TICK ms.

 This file contains the 2 functions needed to initialize the system.

 These functions register a set of scheduling modules, in a fixed or
 dynamic priority way...

 It can accept these task models:

 HARD_TASK_MODEL (wcet+mit) at level 0
 SOFT_TASK_MODEL (periodicity=APERIODIC) at level 1
 NRT_TASK_MODEL  at level 2
 SOFT_TASK_MODEL (periodicity=APERIODIC, wcet (only if TBS) ) at level 3,4

**/

/*
 * Copyright (C) 2000 Paolo Gai
 *
 * 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 "kernel/kern.h"
#include "intdrive/intdrive/intdrive.h"
#include "edf/edf/edf.h"
#include "tbs/tbs/tbs.h"

#include "rm/rm/rm.h"
#include "rr/rr/rr.h"
#include "ps/ps/ps.h"

#include "dummy/dummy/dummy.h"

#include "sem/sem/sem.h"

#include <drivers/shark_linuxc26.h>
#include <drivers/shark_input26.h>
#include <drivers/shark_keyb26.h>

/*+ sysyem tick in us +*/
#define TICK      0

#define RRTICK    10000

/*+ Interrupt Server +*/
#define INTDRIVE_Q 1000
#define INTDRIVE_U 0.1*MAX_BANDWIDTH
#define INTDRIVE_FLAG 0

void call_shutdown_task(void *arg);
int device_drivers_init();
int device_drivers_close();
void set_shutdown_task();
TASK shutdown_task_body(void *arg);

PID shutdown_task_PID = -1;

TIME __kernel_register_levels__(void *arg)
{
  struct multiboot_info *mb = (struct multiboot_info *)arg;

  INTDRIVE_register_level(INTDRIVE_Q, INTDRIVE_Q, INTDRIVE_U, INTDRIVE_FLAG); 
  RM_register_level(RM_ENABLE_ALL);
  PS_register_level(PS_ENABLE_ALL_RM,1,1000,100000);
  RR_register_level(RRTICK, RR_MAIN_YES, mb);
  PS_register_level(4,1,10000,100000);
  PS_register_level(4,1,30000,100000);

  dummy_register_level();

  SEM_register_module();

  return TICK;
}

TASK __init__(void *arg)
{
  struct multiboot_info *mb = (struct multiboot_info *)arg;

  /* Create the shutdown task. It will be activated at RUNLEVEL
     SHUTDOWN */
  set_shutdown_task();

  /* Init the drivers */
  device_drivers_init();

  /* Set the shutdown task activation */
  sys_atrunlevel(call_shutdown_task, NULL, RUNLEVEL_SHUTDOWN);

  __call_main__(mb);

  return (void *)0;
}

void set_shutdown_task() {

  /* WARNING: the shutdown task is a background thread. It cannot execute
              if the system is overloaded */
  NRT_TASK_MODEL nrt;

  nrt_task_default_model(nrt);
  nrt_task_def_system(nrt);

  shutdown_task_PID = task_create("Shutdown Task",shutdown_task_body,&nrt,NULL);
  if (shutdown_task_PID == NIL) {
    sys_shutdown_message("Error: Cannot create shutdown task\n");
    exit(1);
  }

}

int device_drivers_init() {

  KEYB_PARMS kparms = BASE_KEYB;
                                                           
  LINUXC26_register_module(TRUE);

  INPUT26_init();

  keyb_def_ctrlC(kparms, NULL);

  KEYB26_init(&kparms);

  return 0;

}

int device_drivers_close() {
                                                                                                                             
  KEYB26_close();
        
  INPUT26_close();
                                                                                                                             
  return 0;
                                                                                                                             
}

#define SHUTDOWN_TIMEOUT_SEC 3

void call_shutdown_task(void *arg) 
{
  struct timespec t;

  sys_gettime(&t);
  t.tv_sec += SHUTDOWN_TIMEOUT_SEC;

  /* Emergency timeout to exit from RUNLEVEL_SHUTDOWN */
  kern_event_post(&t,(void *)((void *)sys_abort_shutdown),(void *)0);

  task_activate(shutdown_task_PID);
}

TASK shutdown_task_body(void *arg) {

  device_drivers_close();

  sys_shutdown_message("-- S.Ha.R.K. Closed --\n");

  return NULL;

}