tegrakernel/kernel/kernel-4.9/drivers/lightnvm/gennvm.h

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2022-02-16 09:13:02 -06:00
/*
* Copyright: Matias Bjorling <mb@bjorling.me>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#ifndef GENNVM_H_
#define GENNVM_H_
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/lightnvm.h>
struct gen_lun {
struct nvm_lun vlun;
int reserved_blocks;
/* lun block lists */
struct list_head used_list; /* In-use blocks */
struct list_head free_list; /* Not used blocks i.e. released
* and ready for use
*/
struct list_head bb_list; /* Bad blocks. Mutually exclusive with
* free_list and used_list
*/
};
struct gen_dev {
struct nvm_dev *dev;
int nr_luns;
struct gen_lun *luns;
struct list_head area_list;
struct mutex lock;
struct list_head targets;
};
struct gen_area {
struct list_head list;
sector_t begin;
sector_t end; /* end is excluded */
};
#define gen_for_each_lun(bm, lun, i) \
for ((i) = 0, lun = &(bm)->luns[0]; \
(i) < (bm)->nr_luns; (i)++, lun = &(bm)->luns[(i)])
#endif /* GENNVM_H_ */