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/* ramdisk.c -- RAM disk block device implementation
*
* Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia
* Author: Victor V. Vengerov <vvv@oktet.ru>
*
* @(#) $Id$
*/
#ifndef __RTEMS_LIBBLOCK_RAMDISK_H__
#define __RTEMS_LIBBLOCK_RAMDISK_H__
#ifdef __cplusplus
extern "C" {
#endif
#include <rtems.h>
#include "rtems/blkdev.h"
/* RAM disk configuration table entry */
typedef struct rtems_ramdisk_config {
int block_size; /* RAM disk block size */
int block_num; /* Number of blocks on this RAM disk */
void *location; /* RAM disk permanent location (out of RTEMS controlled
memory), or NULL if RAM disk memory should be
allocated dynamically */
} rtems_ramdisk_config;
/* If application want to use RAM disk, it should specify configuration of
* available RAM disks.
* The following is definitions for RAM disk configuration table
*/
extern rtems_ramdisk_config rtems_ramdisk_configuration[];
extern int rtems_ramdisk_configuration_size;
/* ramdisk_initialize --
* RAM disk driver initialization entry point.
*/
rtems_device_driver
ramdisk_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg);
#define RAMDISK_DRIVER_TABLE_ENTRY \
{ ramdisk_initialize, GENERIC_BLOCK_DEVICE_DRIVER_ENTRIES }
#ifdef __cplusplus
}
#endif
#endif
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