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/*
* 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_dev {
struct nvm_dev *dev;
int nr_luns;
struct list_head area_list;
struct mutex lock;
struct list_head targets;
};
/* Map between virtual and physical channel and lun */
struct gen_ch_map {
int ch_off;
int nr_luns;
int *lun_offs;
};
struct gen_dev_map {
struct gen_ch_map *chnls;
int nr_chnls;
};
struct gen_area {
struct list_head list;
sector_t begin;
sector_t end; /* end is excluded */
};
static inline void *ch_map_to_lun_offs(struct gen_ch_map *ch_map)
{
return ch_map + 1;
}
typedef int (gen_trans_fn)(struct nvm_tgt_dev *, struct ppa_addr *);
#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_ */
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