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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 Jonathan Gordon
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdbool.h>
#include "system.h"
#include "ata.h"
#include "ata_idle_notify.h"
#include "kernel.h"
#include "string.h"
#if USING_ATA_CALLBACK
static ata_idle_notify ata_idle_notify_funcs[MAX_ATA_CALLBACKS];
static int ata_callback_count = 0;
#endif
bool register_ata_idle_func(ata_idle_notify function)
{
#if USING_ATA_CALLBACK
int i;
if (ata_callback_count >= MAX_ATA_CALLBACKS)
return false;
for (i=0; i<MAX_ATA_CALLBACKS; i++)
{
if (ata_idle_notify_funcs[i] == NULL)
{
ata_idle_notify_funcs[i] = function;
ata_callback_count++;
return true;
}
else if (ata_idle_notify_funcs[i] == function)
return true;
}
return false;
#else
function(); /* just call the function now */
/* this _may_ cause problems later if the calling function
sets a variable expecting the callback to unset it, because
the callback will be run before this function exits, so before the var is set */
return true;
#endif
}
#if USING_ATA_CALLBACK
void unregister_ata_idle_func(ata_idle_notify func, bool run)
{
int i;
for (i=0; i<MAX_ATA_CALLBACKS; i++)
{
if (ata_idle_notify_funcs[i] == func)
{
ata_idle_notify_funcs[i] = NULL;
ata_callback_count--;
if (run) func();
}
}
return;
}
bool call_ata_idle_notifys(bool force)
{
int i;
static int lock_until = 0;
ata_idle_notify function;
if (!force)
{
if (TIME_BEFORE(current_tick,lock_until) )
return false;
}
lock_until = current_tick + 30*HZ;
for (i = 0; i < MAX_ATA_CALLBACKS; i++)
{
if (ata_idle_notify_funcs[i])
{
function = ata_idle_notify_funcs[i];
ata_idle_notify_funcs[i] = NULL;
function();
ata_callback_count--;
}
}
return true;
}
void ata_idle_notify_init(void)
{
ata_callback_count = 0;
memset(ata_idle_notify_funcs, 0, sizeof(ata_idle_notify_funcs));
}
#endif
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