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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id: ramdisk.c 18965 2008-11-01 17:33:21Z gevaerts $
*
* Copyright (C) 2008 Frank Gevaerts
*
* 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 <stdbool.h>
#include <string.h>
#include "storage.h"
#define SECTOR_SIZE 512
#define NUM_SECTORS 16384
unsigned char ramdisk[SECTOR_SIZE * NUM_SECTORS];
long last_disk_activity = -1;
int ramdisk_read_sectors(IF_MV2(int drive,)
unsigned long start,
int count,
void* buf)
{
if(start+count>=NUM_SECTORS)
{
return -1;
}
memcpy(buf,&ramdisk[start*SECTOR_SIZE],count*SECTOR_SIZE);
return 0;
}
int ramdisk_write_sectors(IF_MV2(int drive,)
unsigned long start,
int count,
const void* buf)
{
if(start+count>=NUM_SECTORS)
{
return -1;
}
memcpy(&ramdisk[start*SECTOR_SIZE],buf,count*SECTOR_SIZE);
return 0;
}
int ramdisk_init(void)
{
return 0;
}
long ramdisk_last_disk_activity(void)
{
return last_disk_activity;
}
void ramdisk_sleep(void)
{
}
void ramdisk_spin(void)
{
}
void ramdisk_sleepnow(void)
{
}
void ramdisk_spindown(int seconds)
{
(void)seconds;
}
#ifdef STORAGE_GET_INFO
void ramdisk_get_info(IF_MV2(int drive,) struct storage_info *info)
{
/* firmware version */
info->revision="0.00";
/* vendor field, need better name? */
info->vendor="Rockbox";
/* model field, need better name? */
info->product="Ramdisk";
/* blocks count */
info->num_sectors=NUM_SECTORS;
info->sector_size=SECTOR_SIZE;
}
#endif
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