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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 1.2 2004-03-09 08:49:12 giacomo Exp $
Revision: $Revision: 1.2 $
Last update: $Date: 2004-03-09 08:49:12 $
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 (;;) {
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, FALSE
);
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);
}