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lightnvm: ensure that nvm_dev_ops can be used without CONFIG_NVM

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null_blk defines an empty version of this ops structure if CONFIG_NVM
isn't set, but it doesn't know the type. Move those bits out of the
protection of CONFIG_NVM in the main lightnvm include.

Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Jens Axboe 2016-01-13 13:04:11 -07:00
parent 8b4970c41f
commit a7fd9a4f3e
1 changed files with 64 additions and 57 deletions
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121
include/linux/lightnvm.h
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@ -1,6 +1,8 @@
#ifndef NVM_H
#define NVM_H
#include <linux/types.h>
enum {
NVM_IO_OK = 0,
NVM_IO_REQUEUE = 1,
@ -11,10 +13,71 @@ enum {
NVM_IOTYPE_GC = 1,
};
#define NVM_BLK_BITS (16)
#define NVM_PG_BITS (16)
#define NVM_SEC_BITS (8)
#define NVM_PL_BITS (8)
#define NVM_LUN_BITS (8)
#define NVM_CH_BITS (8)
struct ppa_addr {
/* Generic structure for all addresses */
union {
struct {
u64 blk : NVM_BLK_BITS;
u64 pg : NVM_PG_BITS;
u64 sec : NVM_SEC_BITS;
u64 pl : NVM_PL_BITS;
u64 lun : NVM_LUN_BITS;
u64 ch : NVM_CH_BITS;
} g;
u64 ppa;
};
};
struct nvm_rq;
struct nvm_id;
struct nvm_dev;
typedef int (nvm_l2p_update_fn)(u64, u32, __le64 *, void *);
typedef int (nvm_bb_update_fn)(struct ppa_addr, int, u8 *, void *);
typedef int (nvm_id_fn)(struct nvm_dev *, struct nvm_id *);
typedef int (nvm_get_l2p_tbl_fn)(struct nvm_dev *, u64, u32,
nvm_l2p_update_fn *, void *);
typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr, int,
nvm_bb_update_fn *, void *);
typedef int (nvm_op_set_bb_fn)(struct nvm_dev *, struct nvm_rq *, int);
typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *);
typedef int (nvm_erase_blk_fn)(struct nvm_dev *, struct nvm_rq *);
typedef void *(nvm_create_dma_pool_fn)(struct nvm_dev *, char *);
typedef void (nvm_destroy_dma_pool_fn)(void *);
typedef void *(nvm_dev_dma_alloc_fn)(struct nvm_dev *, void *, gfp_t,
dma_addr_t *);
typedef void (nvm_dev_dma_free_fn)(void *, void*, dma_addr_t);
struct nvm_dev_ops {
nvm_id_fn *identity;
nvm_get_l2p_tbl_fn *get_l2p_tbl;
nvm_op_bb_tbl_fn *get_bb_tbl;
nvm_op_set_bb_fn *set_bb_tbl;
nvm_submit_io_fn *submit_io;
nvm_erase_blk_fn *erase_block;
nvm_create_dma_pool_fn *create_dma_pool;
nvm_destroy_dma_pool_fn *destroy_dma_pool;
nvm_dev_dma_alloc_fn *dev_dma_alloc;
nvm_dev_dma_free_fn *dev_dma_free;
unsigned int max_phys_sect;
};
#ifdef CONFIG_NVM
#include <linux/blkdev.h>
#include <linux/types.h>
#include <linux/file.h>
#include <linux/dmapool.h>
#include <uapi/linux/lightnvm.h>
@ -149,29 +212,6 @@ struct nvm_tgt_instance {
#define NVM_VERSION_MINOR 0
#define NVM_VERSION_PATCH 0
#define NVM_BLK_BITS (16)
#define NVM_PG_BITS (16)
#define NVM_SEC_BITS (8)
#define NVM_PL_BITS (8)
#define NVM_LUN_BITS (8)
#define NVM_CH_BITS (8)
struct ppa_addr {
/* Generic structure for all addresses */
union {
struct {
u64 blk : NVM_BLK_BITS;
u64 pg : NVM_PG_BITS;
u64 sec : NVM_SEC_BITS;
u64 pl : NVM_PL_BITS;
u64 lun : NVM_LUN_BITS;
u64 ch : NVM_CH_BITS;
} g;
u64 ppa;
};
};
struct nvm_rq;
typedef void (nvm_end_io_fn)(struct nvm_rq *);
@ -213,39 +253,6 @@ static inline void *nvm_rq_to_pdu(struct nvm_rq *rqdata)
struct nvm_block;
typedef int (nvm_l2p_update_fn)(u64, u32, __le64 *, void *);
typedef int (nvm_bb_update_fn)(struct ppa_addr, int, u8 *, void *);
typedef int (nvm_id_fn)(struct nvm_dev *, struct nvm_id *);
typedef int (nvm_get_l2p_tbl_fn)(struct nvm_dev *, u64, u32,
nvm_l2p_update_fn *, void *);
typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr, int,
nvm_bb_update_fn *, void *);
typedef int (nvm_op_set_bb_fn)(struct nvm_dev *, struct nvm_rq *, int);
typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *);
typedef int (nvm_erase_blk_fn)(struct nvm_dev *, struct nvm_rq *);
typedef void *(nvm_create_dma_pool_fn)(struct nvm_dev *, char *);
typedef void (nvm_destroy_dma_pool_fn)(void *);
typedef void *(nvm_dev_dma_alloc_fn)(struct nvm_dev *, void *, gfp_t,
dma_addr_t *);
typedef void (nvm_dev_dma_free_fn)(void *, void*, dma_addr_t);
struct nvm_dev_ops {
nvm_id_fn *identity;
nvm_get_l2p_tbl_fn *get_l2p_tbl;
nvm_op_bb_tbl_fn *get_bb_tbl;
nvm_op_set_bb_fn *set_bb_tbl;
nvm_submit_io_fn *submit_io;
nvm_erase_blk_fn *erase_block;
nvm_create_dma_pool_fn *create_dma_pool;
nvm_destroy_dma_pool_fn *destroy_dma_pool;
nvm_dev_dma_alloc_fn *dev_dma_alloc;
nvm_dev_dma_free_fn *dev_dma_free;
unsigned int max_phys_sect;
};
struct nvm_lun {
int id;