Subversion Repositories shark

/*

 * 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: iaster6.c,v 1.3 2004-04-21 14:55:05 giacomo Exp $

 File:        $File$

 Revision:    $Revision: 1.3 $

 Last update: $Date: 2004-04-21 14:55:05 $

 ------------

 System initialization file

 h3pips.c

 These functions register the following levels:

 an EDF (Earliest Deadline First) level

 a RR (Round Robin) level

 a CBS (Costant Bandwidth Server) level

 a PS (Polling Server) level

 a Dummy level

 It can accept these task models:

 HARD_TASK_MODEL (wcet+mit) at level 0

 NRT_TASK_MODEL  at level 1

 SOFT_TASK_MODEL (met, period) at level 2

 SOFT_TASK_MODEL (periodicity=APERIODIC) at level 3

**/

/*

 * 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 "modules/intdrive.h"

#include "modules/edf.h"

#include "modules/cbs.h"

#include "modules/rr.h"

#include "modules/dummy.h"

#include "modules/ps.h"

#include "modules/sem.h"

#include "modules/hartport.h"

#include "modules/cabs.h"

#include "modules/pi.h"

#include "modules/pc.h"

#include "modules/srp.h"

#include "modules/npp.h"

#include "modules/nop.h"

#include <drivers/shark_linuxc26.h>

#include <drivers/shark_input26.h>

#include <drivers/shark_keyb26.h>

/*+ sysyem tick in us +*/

#define TICK 1000

/*+ RR tick in us +*/

#define RRTICK 10000

/*+ Interrupt Server +*/

#define INTDRIVE_Q 1000

#define INTDRIVE_T 10000

#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_T,INTDRIVE_FLAG);

  EDF_register_level(EDF_ENABLE_ALL);

  RR_register_level(RRTICK, RR_MAIN_YES, mb);

  CBS_register_level(CBS_ENABLE_ALL, 1);

  PS_register_level(2 /*PS_ENABLE_ALL_EDF*/,1,500,100000);

  dummy_register_level();

  SEM_register_module();

  CABS_register_module();

  PI_register_module();

  PC_register_module();

  NPP_register_module();

  SRP_register_module();

  NOP_register_module();

  return TICK;

}

TASK __init__(void *arg)

{

  struct multiboot_info *mb = (struct multiboot_info *)arg;

  HARTPORT_init();

  /* 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");

    sys_end();

  }

}

int device_drivers_init() {

  KEYB_PARMS kparms = BASE_KEYB;

  LINUXC26_register_module();

  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");

  sys_abort_shutdown(0);

  return NULL;

}