[deliverable/linux.git] / drivers / lightnvm / gennvm.h

/*
 * 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_ */
Commit	Line	Data
48add0f5 MB	1	/*
	2	* Copyright: Matias Bjorling <mb@bjorling.me>
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License version
	6	* 2 as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	11	* General Public License for more details.
	12	*
	13	*/
	14
	15	#ifndef GENNVM_H_
	16	#define GENNVM_H_
	17
	18	#include <linux/module.h>
	19	#include <linux/vmalloc.h>
	20
	21	#include <linux/lightnvm.h>
	22
	23	struct gen_lun {
	24	struct nvm_lun vlun;
	25
	26	int reserved_blocks;
	27	/* lun block lists */
	28	struct list_head used_list; /* In-use blocks */
	29	struct list_head free_list; /* Not used blocks i.e. released
	30	* and ready for use
	31	*/
	32	struct list_head bb_list; /* Bad blocks. Mutually exclusive with
	33	* free_list and used_list
	34	*/
	35	};
	36
5e60edb7	37	struct gen_dev {
11450469 MB	38	struct nvm_dev *dev;
11450469 MB	39
48add0f5 MB	40	int nr_luns;
48add0f5 MB	41	struct gen_lun *luns;
4c9dacb8	42	struct list_head area_list;
b76eb20b MB	43
	44	struct mutex lock;
	45	struct list_head targets;
48add0f5 MB	46	};
48add0f5 MB	47
5e60edb7	48	struct gen_area {
4c9dacb8 WT	49	struct list_head list;
	50	sector_t begin;
	51	sector_t end; /* end is excluded */
	52	};
5e60edb7 MB	53
5e60edb7 MB	54	#define gen_for_each_lun(bm, lun, i) \
48add0f5 MB	55	for ((i) = 0, lun = &(bm)->luns[0]; \
	56	(i) < (bm)->nr_luns; (i)++, lun = &(bm)->luns[(i)])
	57
	58	#endif /* GENNVM_H_ */