382d1861af
No code changed, just shuffling stuff around. This should make it easier to build only select parts kernel and use different implementations. Change-Id: Ie1f00f93008833ce38419d760afd70062c5e22b5
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2002 by Björn Stenberg
|
|
*
|
|
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include "config.h"
|
|
#include "tick.h"
|
|
#include "general.h"
|
|
#include "panic.h"
|
|
|
|
/****************************************************************************
|
|
* Timer tick
|
|
*****************************************************************************/
|
|
|
|
|
|
/* List of tick tasks - final element always NULL for termination */
|
|
void (*tick_funcs[MAX_NUM_TICK_TASKS+1])(void);
|
|
|
|
#if !defined(CPU_PP) || !defined(BOOTLOADER) || \
|
|
defined(HAVE_BOOTLOADER_USB_MODE)
|
|
volatile long current_tick SHAREDDATA_ATTR = 0;
|
|
#endif
|
|
|
|
/* - Timer initialization and interrupt handler is defined at
|
|
* the target level: tick_start() is implemented in the target tree */
|
|
|
|
int tick_add_task(void (*f)(void))
|
|
{
|
|
int oldlevel = disable_irq_save();
|
|
void **arr = (void **)tick_funcs;
|
|
void **p = find_array_ptr(arr, f);
|
|
|
|
/* Add a task if there is room */
|
|
if(p - arr < MAX_NUM_TICK_TASKS)
|
|
{
|
|
*p = f; /* If already in list, no problem. */
|
|
}
|
|
else
|
|
{
|
|
panicf("Error! tick_add_task(): out of tasks");
|
|
}
|
|
|
|
restore_irq(oldlevel);
|
|
return 0;
|
|
}
|
|
|
|
int tick_remove_task(void (*f)(void))
|
|
{
|
|
int oldlevel = disable_irq_save();
|
|
int rc = remove_array_ptr((void **)tick_funcs, f);
|
|
restore_irq(oldlevel);
|
|
return rc;
|
|
}
|
|
|
|
void init_tick(void)
|
|
{
|
|
tick_start(1000/HZ);
|
|
}
|