/*
 * @Copyright: 
 * @Description: 
 * @Author: zhoujie
 * @Date: 2020-08-14 23:08:07
 * @LastEditors: zhoujie
 * @LastEditTime: 2020-08-15 00:34:02
 */
/* 
 * Contributors: Youngjae Kim (youkim@cse.psu.edu)
 *               Aayush Gupta (axg354@cse.psu.edu)
 *
 * In case if you have any doubts or questions, kindly write to: youkim@cse.psu.edu 
 *
 * Description: This is a header file for flash.c.
 *
 * Acknowledgement: We thank Jeong Uk Kang by sharing the initial version 
 * of sector-level FTL source code. 
 *
 */

#ifndef SSD_LAYOUT 
#define SSD_LAYOUT 
#include  "type.h"





extern FILE *fp_erase;
int nand_init (_u32 blk_num, _u8 min_free_blk_num);
void nand_end ();
_u8 nand_page_read (_u32 psn, _u32 *lsns, _u8 isGC);
_u8 nand_page_write (_u32 psn, _u32 *lsns, _u8 isGC, int map_flag);
void nand_erase (_u32 blk_no);
void nand_invalidate (_u32 psn, _u32 lsn);
_u32 nand_get_free_blk(int);
void nand_stat(int);
void nand_stat_reset();
void nand_stat_print(FILE *outFP);
int nand_oob_read(_u32 psn);

_u32 free_blk_num;
_u32 free_blk_idx;

#endif 

#define WEAR_LEVEL_THRESHOLD   35 

void flush(int);