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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 | ||
5e60edb7 | 23 | struct gen_dev { |
11450469 MB |
24 | struct nvm_dev *dev; |
25 | ||
48add0f5 | 26 | int nr_luns; |
4c9dacb8 | 27 | struct list_head area_list; |
b76eb20b MB |
28 | |
29 | struct mutex lock; | |
30 | struct list_head targets; | |
48add0f5 MB |
31 | }; |
32 | ||
8e53624d JG |
33 | /* Map between virtual and physical channel and lun */ |
34 | struct gen_ch_map { | |
35 | int ch_off; | |
36 | int nr_luns; | |
37 | int *lun_offs; | |
38 | }; | |
39 | ||
40 | struct gen_dev_map { | |
41 | struct gen_ch_map *chnls; | |
42 | int nr_chnls; | |
43 | }; | |
44 | ||
5e60edb7 | 45 | struct gen_area { |
4c9dacb8 WT |
46 | struct list_head list; |
47 | sector_t begin; | |
48 | sector_t end; /* end is excluded */ | |
49 | }; | |
5e60edb7 | 50 | |
8e53624d JG |
51 | static inline void *ch_map_to_lun_offs(struct gen_ch_map *ch_map) |
52 | { | |
53 | return ch_map + 1; | |
54 | } | |
55 | ||
56 | typedef int (gen_trans_fn)(struct nvm_tgt_dev *, struct ppa_addr *); | |
57 | ||
5e60edb7 | 58 | #define gen_for_each_lun(bm, lun, i) \ |
48add0f5 MB |
59 | for ((i) = 0, lun = &(bm)->luns[0]; \ |
60 | (i) < (bm)->nr_luns; (i)++, lun = &(bm)->luns[(i)]) | |
61 | ||
62 | #endif /* GENNVM_H_ */ |