d5a5f37a6a
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18994 a1c6a512-1295-4272-9138-f99709370657
102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* 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(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
|
|
|