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/*
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 * Project: HARTIK (HA-rd R-eal TI-me K-ernel)
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 *
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 * Coordinators: Giorgio Buttazzo <giorgio@sssup.it>
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 *               Gerardo Lamastra <gerardo@sssup.it>
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 *
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 * Authors     : Paolo Gai <pj@hartik.sssup.it>
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 * (see authors.txt for full list of hartik's authors)
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 *
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 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
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 *
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 * http://www.sssup.it
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 * http://retis.sssup.it
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 * http://hartik.sssup.it
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 */
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/**
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 ------------
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 CVS :        $Id: const.h,v 1.4 2004-01-28 11:54:36 giacomo Exp $
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 File:        $File$
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 Revision:    $Revision: 1.4 $
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 Last update: $Date: 2004-01-28 11:54:36 $
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 ------------
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 System constants:
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   - Customizable constants
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   - Non-Customizable constants
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 IMPORTANT!!!
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 This file is used also at assembly level,to have unique
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 defintion and avoid mess!
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**/
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/*
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 * Copyright (C) 2000 Paolo Gai
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 */
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#ifndef __KERNEL_CONST_H__
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#define __KERNEL_CONST_H__
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#include <ll/i386/tss-ctx.h>
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/* -------------------------------------------------------------------- */
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/* These constant can be freely changed to customize the kernel         */
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/* -------------------------------------------------------------------- */
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/* Tasks, functions, interrupts, exceptions */
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#define MAX_PROC          TSSMax-1      /*+ Maximum number of tasks
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                                            Change the value in
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                                            ll/i386/tss-ctx.h!!!
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                                            -1 because there is the
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                                            global context!!!            +*/
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#define MAX_RUNLEVEL_FUNC 40            /*+ Runlevel functions +*/
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#define STACK_SIZE      4096U           /*+ Stack size in bytes          +*/
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#define JET_TABLE_DIM     20U           /*+ Max n. of Jet entries        +*/
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#define MAX_CANCPOINTS    20U           /*+ maximum number of cancellation
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                                            points (look at kill.c) +*/
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#define MAX_SIGINTPOINTS  20U           /*+ maximum number of signal
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                                            interruptable points         +*/
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/* Levels and modules */
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#define MAX_SCHED_LEVEL   30U           /*+ Max Schedule levels          +*/
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#define MAX_RES_LEVEL     8U            /*+ Max Resource levels          +*/
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#define MAX_LEVELNAME     20U           /*+ Level Name Max Lenght        +*/
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#define MAX_MODULENAME    20U           /*+ Resource Module Name Max L.  +*/
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#define MAX_TASKNAME      20U           /*+ Task Name Max Length         +*/
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/* Resource and communication */
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#define MAX_CPRINT_BUF 512U           /*+ Length of cprintf() buffer   +*/
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/* -------------------------------------------------------------------- */
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/* End of user customazable constants                                   */
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/* -------------------------------------------------------------------- */
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/*+ this is the bandwidth used in the on-line guarantee algorithm
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    the value means x/MAX_BANDWIDTH free bandwidth... +*/
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#define MAX_BANDWIDTH MAX_DWORD
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/*+ STATUS attributes are divided in 2 sets:
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    - kernel status set (FREE, EXE, SLEEP, IDLE)
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    - scheduling modules status set (the remainings status! READY...)
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      the values are in the range [MODULE_STATUS_BASE, APER_STATUS_BASE-1]
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    - aperiodic servers status set
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      the minimum value is APER_STATUS_BASE
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      The statuses must be separated because an aperiodic server may,
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      for example put an event that checks a task state;
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+*/
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#define FREE            0
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#define EXE             1
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#define SLEEP           2
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#define WAIT_JOIN       3
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#define WAIT_COND       4
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#define WAIT_SIG        5
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#define WAIT_SEM        6
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#define WAIT_NANOSLEEP  7
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#define WAIT_SIGSUSPEND 8
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#define WAIT_MQSEND     9
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#define WAIT_MQRECEIVE 10
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/*+ base status for scheduling levels +*/
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#define MODULE_STATUS_BASE  128
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/*+ base status for aperiodic servers +*/
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#define APER_STATUS_BASE   1024
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/*+ base status for libraries +*/
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#define LIB_STATUS_BASE    2048
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/*+ return value for killed tasks; it is equal to PTHREAD_CANCELED!!! +*/
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#define TASK_CANCELED  (void *)1
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/*+ Set the cancellation state of the task +*/
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#define TASK_CANCEL_ENABLE  KILL_ENABLED
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#define TASK_CANCEL_DISABLE 0
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/*+ Set the cancellation type of the task +*/
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#define TASK_CANCEL_DEFERRED     KILL_DEFERRED
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#define TASK_CANCEL_ASYNCHRONOUS 0
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/* C stuff */
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#ifndef NIL
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#define NIL     -1                      /*+ integer unvalid value   +*/
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#endif
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/*+ Blocking attribute for semaphore, port & keyboard operations +*/
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#define BLOCK           1
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#define NON_BLOCK       0
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#define DEFAULT (DWORD)-1
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/*+ sys_atrunlevel status bit values: used to signal that the function
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    has to be called +*/
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#define RUNLEVEL_STARTUP     0 /*+ startup in real mode                  +*/
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#define RUNLEVEL_INIT        1 /*+ init time                             +*/
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#define RUNLEVEL_RUNNING     2 /*+ system is running!!!                  +*/
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#define RUNLEVEL_SHUTDOWN    3 /*+ shutting down the system              +*/
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#define RUNLEVEL_BEFORE_EXIT 4 /*+ before the kernel has been terminated +*/
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#define RUNLEVEL_AFTER_EXIT  5 /*+ after the kernel has been terminated  +*/
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#define RUNLEVEL_MASK        0x7 /*+ a mask used into kernel/init.c      +*/
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#define NO_AT_ABORT          8 /*+ only when sys_end is called           +*/
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#endif /* __CONST_H__ */
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