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lightnvm: transform target get/set bad block

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Since targets are given a virtual target device, it is necessary to
translate all communication between targets and the backend device.
Implement the translation layer for get/set bad block table.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Javier González
2016-11-28 22:39:14 +01:00
committed by Jens Axboe
parent da2d7cb828
commit 333ba053d1
4 changed files with 85 additions and 11 deletions
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15
include/linux/lightnvm.h
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@@ -496,8 +496,15 @@ typedef int (nvmm_submit_io_fn)(struct nvm_tgt_dev *, struct nvm_rq *);
typedef int (nvmm_erase_blk_fn)(struct nvm_tgt_dev *, struct ppa_addr *, int);
typedef int (nvmm_get_area_fn)(struct nvm_dev *, sector_t *, sector_t);
typedef void (nvmm_put_area_fn)(struct nvm_dev *, sector_t);
typedef struct ppa_addr (nvmm_trans_ppa_fn)(struct nvm_tgt_dev *,
struct ppa_addr, int);
typedef void (nvmm_part_to_tgt_fn)(struct nvm_dev *, sector_t*, int);
enum {
TRANS_TGT_TO_DEV = 0x0,
TRANS_DEV_TO_TGT = 0x1,
};
struct nvmm_type {
const char *name;
unsigned int version[3];
@@ -514,6 +521,7 @@ struct nvmm_type {
nvmm_get_area_fn *get_area;
nvmm_put_area_fn *put_area;
nvmm_trans_ppa_fn *trans_ppa;
nvmm_part_to_tgt_fn *part_to_tgt;
struct list_head list;
@@ -526,9 +534,9 @@ extern struct nvm_dev *nvm_alloc_dev(int);
extern int nvm_register(struct nvm_dev *);
extern void nvm_unregister(struct nvm_dev *);
extern int nvm_set_bb_tbl(struct nvm_dev *dev, struct ppa_addr *ppas,
int nr_ppas, int type);
extern int nvm_set_bb_tbl(struct nvm_dev *, struct ppa_addr *, int, int);
extern int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *, struct ppa_addr *,
int, int);
extern int nvm_max_phys_sects(struct nvm_tgt_dev *);
extern int nvm_submit_io(struct nvm_tgt_dev *, struct nvm_rq *);
extern void nvm_generic_to_addr_mode(struct nvm_dev *, struct nvm_rq *);
@@ -549,6 +557,7 @@ extern int nvm_submit_ppa_list(struct nvm_dev *, struct ppa_addr *, int, int,
int, void *, int);
extern int nvm_bb_tbl_fold(struct nvm_dev *, u8 *, int);
extern int nvm_get_bb_tbl(struct nvm_dev *, struct ppa_addr, u8 *);
extern int nvm_get_tgt_bb_tbl(struct nvm_tgt_dev *, struct ppa_addr, u8 *);
/* sysblk.c */
#define NVM_SYSBLK_MAGIC 0x4E564D53 /* "NVMS" */