]>
git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - include/linux/lightnvm.h
1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/blkdev.h>
6 #include <linux/types.h>
7 #include <uapi/linux/lightnvm.h>
20 #define NVM_GEN_CH_BITS (8)
21 #define NVM_GEN_LUN_BITS (8)
22 #define NVM_GEN_BLK_BITS (16)
23 #define NVM_GEN_RESERVED (32)
26 #define NVM_12_PG_BITS (16)
27 #define NVM_12_PL_BITS (4)
28 #define NVM_12_SEC_BITS (4)
29 #define NVM_12_RESERVED (8)
32 #define NVM_20_SEC_BITS (24)
33 #define NVM_20_RESERVED (8)
36 NVM_OCSSD_SPEC_12
= 12,
37 NVM_OCSSD_SPEC_20
= 20,
41 /* Generic structure for all addresses */
43 /* generic device format */
45 u64 ch
: NVM_GEN_CH_BITS
;
46 u64 lun
: NVM_GEN_LUN_BITS
;
47 u64 blk
: NVM_GEN_BLK_BITS
;
48 u64 reserved
: NVM_GEN_RESERVED
;
51 /* 1.2 device format */
53 u64 ch
: NVM_GEN_CH_BITS
;
54 u64 lun
: NVM_GEN_LUN_BITS
;
55 u64 blk
: NVM_GEN_BLK_BITS
;
56 u64 pg
: NVM_12_PG_BITS
;
57 u64 pl
: NVM_12_PL_BITS
;
58 u64 sec
: NVM_12_SEC_BITS
;
59 u64 reserved
: NVM_12_RESERVED
;
62 /* 2.0 device format */
64 u64 grp
: NVM_GEN_CH_BITS
;
65 u64 pu
: NVM_GEN_LUN_BITS
;
66 u64 chk
: NVM_GEN_BLK_BITS
;
67 u64 sec
: NVM_20_SEC_BITS
;
68 u64 reserved
: NVM_20_RESERVED
;
86 typedef int (nvm_id_fn
)(struct nvm_dev
*);
87 typedef int (nvm_op_bb_tbl_fn
)(struct nvm_dev
*, struct ppa_addr
, u8
*);
88 typedef int (nvm_op_set_bb_fn
)(struct nvm_dev
*, struct ppa_addr
*, int, int);
89 typedef int (nvm_get_chk_meta_fn
)(struct nvm_dev
*, sector_t
, int,
90 struct nvm_chk_meta
*);
91 typedef int (nvm_submit_io_fn
)(struct nvm_dev
*, struct nvm_rq
*);
92 typedef int (nvm_submit_io_sync_fn
)(struct nvm_dev
*, struct nvm_rq
*);
93 typedef void *(nvm_create_dma_pool_fn
)(struct nvm_dev
*, char *, int);
94 typedef void (nvm_destroy_dma_pool_fn
)(void *);
95 typedef void *(nvm_dev_dma_alloc_fn
)(struct nvm_dev
*, void *, gfp_t
,
97 typedef void (nvm_dev_dma_free_fn
)(void *, void*, dma_addr_t
);
101 nvm_op_bb_tbl_fn
*get_bb_tbl
;
102 nvm_op_set_bb_fn
*set_bb_tbl
;
104 nvm_get_chk_meta_fn
*get_chk_meta
;
106 nvm_submit_io_fn
*submit_io
;
107 nvm_submit_io_sync_fn
*submit_io_sync
;
109 nvm_create_dma_pool_fn
*create_dma_pool
;
110 nvm_destroy_dma_pool_fn
*destroy_dma_pool
;
111 nvm_dev_dma_alloc_fn
*dev_dma_alloc
;
112 nvm_dev_dma_free_fn
*dev_dma_free
;
117 #include <linux/blkdev.h>
118 #include <linux/file.h>
119 #include <linux/dmapool.h>
120 #include <uapi/linux/lightnvm.h>
123 /* HW Responsibilities */
124 NVM_RSP_L2P
= 1 << 0,
125 NVM_RSP_ECC
= 1 << 1,
127 /* Physical Adressing Mode */
128 NVM_ADDRMODE_LINEAR
= 0,
129 NVM_ADDRMODE_CHANNEL
= 1,
131 /* Plane programming mode for LUN */
132 NVM_PLANE_SINGLE
= 1,
133 NVM_PLANE_DOUBLE
= 2,
137 NVM_RSP_SUCCESS
= 0x0,
138 NVM_RSP_NOT_CHANGEABLE
= 0x1,
139 NVM_RSP_ERR_FAILWRITE
= 0x40ff,
140 NVM_RSP_ERR_EMPTYPAGE
= 0x42ff,
141 NVM_RSP_ERR_FAILECC
= 0x4281,
142 NVM_RSP_ERR_FAILCRC
= 0x4004,
143 NVM_RSP_WARN_HIGHECC
= 0x4700,
146 NVM_OP_PWRITE
= 0x91,
150 /* PPA Command Flags */
151 NVM_IO_SNGL_ACCESS
= 0x0,
152 NVM_IO_DUAL_ACCESS
= 0x1,
153 NVM_IO_QUAD_ACCESS
= 0x2,
155 /* NAND Access Modes */
156 NVM_IO_SUSPEND
= 0x80,
157 NVM_IO_SLC_MODE
= 0x100,
158 NVM_IO_SCRAMBLE_ENABLE
= 0x200,
161 NVM_BLK_T_FREE
= 0x0,
163 NVM_BLK_T_GRWN_BAD
= 0x2,
165 NVM_BLK_T_HOST
= 0x8,
167 /* Memory capabilities */
168 NVM_ID_CAP_SLC
= 0x1,
169 NVM_ID_CAP_CMD_SUSPEND
= 0x2,
170 NVM_ID_CAP_SCRAMBLE
= 0x4,
171 NVM_ID_CAP_ENCRYPT
= 0x8,
174 NVM_ID_FMTYPE_SLC
= 0,
175 NVM_ID_FMTYPE_MLC
= 1,
177 /* Device capabilities */
178 NVM_ID_DCAP_BBLKMGMT
= 0x1,
179 NVM_UD_DCAP_ECC
= 0x2,
182 struct nvm_id_lp_mlc
{
187 struct nvm_id_lp_tbl
{
189 struct nvm_id_lp_mlc mlc
;
192 struct nvm_addrf_12
{
237 NVM_CHK_ST_FREE
= 1 << 0,
238 NVM_CHK_ST_CLOSED
= 1 << 1,
239 NVM_CHK_ST_OPEN
= 1 << 2,
240 NVM_CHK_ST_OFFLINE
= 1 << 3,
243 NVM_CHK_TP_W_SEQ
= 1 << 0,
244 NVM_CHK_TP_W_RAN
= 1 << 1,
245 NVM_CHK_TP_SZ_SPEC
= 1 << 4,
249 * Note: The structure size is linked to nvme_nvm_chk_meta such that the same
250 * buffer can be used when converting from little endian to cpu addressing.
252 struct nvm_chk_meta
{
263 struct list_head list
;
264 struct nvm_tgt_dev
*dev
;
265 struct nvm_tgt_type
*type
;
266 struct gendisk
*disk
;
269 #define ADDR_EMPTY (~0ULL)
271 #define NVM_TARGET_DEFAULT_OP (101)
272 #define NVM_TARGET_MIN_OP (3)
273 #define NVM_TARGET_MAX_OP (80)
275 #define NVM_VERSION_MAJOR 1
276 #define NVM_VERSION_MINOR 0
277 #define NVM_VERSION_PATCH 0
279 #define NVM_MAX_VLBA (64) /* max logical blocks in a vector command */
282 typedef void (nvm_end_io_fn
)(struct nvm_rq
*);
285 struct nvm_tgt_dev
*dev
;
290 struct ppa_addr ppa_addr
;
291 dma_addr_t dma_ppa_list
;
294 struct ppa_addr
*ppa_list
;
297 dma_addr_t dma_meta_list
;
299 nvm_end_io_fn
*end_io
;
305 u64 ppa_status
; /* ppa media status */
308 int is_seq
; /* Sequential hint flag. 1.2 only */
313 static inline struct nvm_rq
*nvm_rq_from_pdu(void *pdu
)
315 return pdu
- sizeof(struct nvm_rq
);
318 static inline void *nvm_rq_to_pdu(struct nvm_rq
*rqdata
)
323 static inline struct ppa_addr
*nvm_rq_to_ppa_list(struct nvm_rq
*rqd
)
325 return (rqd
->nr_ppas
> 1) ? rqd
->ppa_list
: &rqd
->ppa_addr
;
329 NVM_BLK_ST_FREE
= 0x1, /* Free block */
330 NVM_BLK_ST_TGT
= 0x2, /* Block in use by target */
331 NVM_BLK_ST_BAD
= 0x8, /* Bad block */
334 /* Instance geometry */
336 /* device reported version */
340 /* kernel short version */
343 /* instance specific geometry */
345 int num_lun
; /* per channel */
347 /* calculated values */
348 int all_luns
; /* across channels */
349 int all_chunks
; /* across channels */
351 int op
; /* over-provision in instance */
353 sector_t total_secs
; /* across channels */
356 u32 num_chk
; /* chunks per lun */
357 u32 clba
; /* sectors per chunk */
358 u16 csecs
; /* sector size */
359 u16 sos
; /* out-of-band area size */
360 bool ext
; /* metadata in extended data buffer */
361 u32 mdts
; /* Max data transfer size*/
363 /* device write constrains */
364 u32 ws_min
; /* minimum write size */
365 u32 ws_opt
; /* optimal write size */
366 u32 mw_cunits
; /* distance required for successful read */
367 u32 maxoc
; /* maximum open chunks */
368 u32 maxocpu
; /* maximum open chunks per parallel unit */
370 /* device capabilities */
374 u32 trdt
; /* Avg. Tread (ns) */
375 u32 trdm
; /* Max Tread (ns) */
376 u32 tprt
; /* Avg. Tprog (ns) */
377 u32 tprm
; /* Max Tprog (ns) */
378 u32 tbet
; /* Avg. Terase (ns) */
379 u32 tbem
; /* Max Terase (ns) */
381 /* generic address format */
382 struct nvm_addrf addrf
;
384 /* 1.2 compatibility */
401 /* sub-device structure */
403 /* Device information */
406 /* Base ppas for target LUNs */
407 struct ppa_addr
*luns
;
409 struct request_queue
*q
;
411 struct nvm_dev
*parent
;
416 struct nvm_dev_ops
*ops
;
418 struct list_head devices
;
420 /* Device information */
423 unsigned long *lun_map
;
427 struct request_queue
*q
;
428 char name
[DISK_NAME_LEN
];
437 /* target management */
438 struct list_head area_list
;
439 struct list_head targets
;
442 static inline struct ppa_addr
generic_to_dev_addr(struct nvm_dev
*dev
,
445 struct nvm_geo
*geo
= &dev
->geo
;
448 if (geo
->version
== NVM_OCSSD_SPEC_12
) {
449 struct nvm_addrf_12
*ppaf
= (struct nvm_addrf_12
*)&geo
->addrf
;
451 l
.ppa
= ((u64
)r
.g
.ch
) << ppaf
->ch_offset
;
452 l
.ppa
|= ((u64
)r
.g
.lun
) << ppaf
->lun_offset
;
453 l
.ppa
|= ((u64
)r
.g
.blk
) << ppaf
->blk_offset
;
454 l
.ppa
|= ((u64
)r
.g
.pg
) << ppaf
->pg_offset
;
455 l
.ppa
|= ((u64
)r
.g
.pl
) << ppaf
->pln_offset
;
456 l
.ppa
|= ((u64
)r
.g
.sec
) << ppaf
->sec_offset
;
458 struct nvm_addrf
*lbaf
= &geo
->addrf
;
460 l
.ppa
= ((u64
)r
.m
.grp
) << lbaf
->ch_offset
;
461 l
.ppa
|= ((u64
)r
.m
.pu
) << lbaf
->lun_offset
;
462 l
.ppa
|= ((u64
)r
.m
.chk
) << lbaf
->chk_offset
;
463 l
.ppa
|= ((u64
)r
.m
.sec
) << lbaf
->sec_offset
;
469 static inline struct ppa_addr
dev_to_generic_addr(struct nvm_dev
*dev
,
472 struct nvm_geo
*geo
= &dev
->geo
;
477 if (geo
->version
== NVM_OCSSD_SPEC_12
) {
478 struct nvm_addrf_12
*ppaf
= (struct nvm_addrf_12
*)&geo
->addrf
;
480 l
.g
.ch
= (r
.ppa
& ppaf
->ch_mask
) >> ppaf
->ch_offset
;
481 l
.g
.lun
= (r
.ppa
& ppaf
->lun_mask
) >> ppaf
->lun_offset
;
482 l
.g
.blk
= (r
.ppa
& ppaf
->blk_mask
) >> ppaf
->blk_offset
;
483 l
.g
.pg
= (r
.ppa
& ppaf
->pg_mask
) >> ppaf
->pg_offset
;
484 l
.g
.pl
= (r
.ppa
& ppaf
->pln_mask
) >> ppaf
->pln_offset
;
485 l
.g
.sec
= (r
.ppa
& ppaf
->sec_mask
) >> ppaf
->sec_offset
;
487 struct nvm_addrf
*lbaf
= &geo
->addrf
;
489 l
.m
.grp
= (r
.ppa
& lbaf
->ch_mask
) >> lbaf
->ch_offset
;
490 l
.m
.pu
= (r
.ppa
& lbaf
->lun_mask
) >> lbaf
->lun_offset
;
491 l
.m
.chk
= (r
.ppa
& lbaf
->chk_mask
) >> lbaf
->chk_offset
;
492 l
.m
.sec
= (r
.ppa
& lbaf
->sec_mask
) >> lbaf
->sec_offset
;
498 static inline u64
dev_to_chunk_addr(struct nvm_dev
*dev
, void *addrf
,
501 struct nvm_geo
*geo
= &dev
->geo
;
504 if (geo
->version
== NVM_OCSSD_SPEC_12
) {
505 struct nvm_addrf_12
*ppaf
= (struct nvm_addrf_12
*)addrf
;
507 caddr
= (u64
)p
.g
.pg
<< ppaf
->pg_offset
;
508 caddr
|= (u64
)p
.g
.pl
<< ppaf
->pln_offset
;
509 caddr
|= (u64
)p
.g
.sec
<< ppaf
->sec_offset
;
517 static inline struct ppa_addr
nvm_ppa32_to_ppa64(struct nvm_dev
*dev
,
518 void *addrf
, u32 ppa32
)
520 struct ppa_addr ppa64
;
525 ppa64
.ppa
= ADDR_EMPTY
;
526 } else if (ppa32
& (1U << 31)) {
527 ppa64
.c
.line
= ppa32
& ((~0U) >> 1);
528 ppa64
.c
.is_cached
= 1;
530 struct nvm_geo
*geo
= &dev
->geo
;
532 if (geo
->version
== NVM_OCSSD_SPEC_12
) {
533 struct nvm_addrf_12
*ppaf
= addrf
;
535 ppa64
.g
.ch
= (ppa32
& ppaf
->ch_mask
) >>
537 ppa64
.g
.lun
= (ppa32
& ppaf
->lun_mask
) >>
539 ppa64
.g
.blk
= (ppa32
& ppaf
->blk_mask
) >>
541 ppa64
.g
.pg
= (ppa32
& ppaf
->pg_mask
) >>
543 ppa64
.g
.pl
= (ppa32
& ppaf
->pln_mask
) >>
545 ppa64
.g
.sec
= (ppa32
& ppaf
->sec_mask
) >>
548 struct nvm_addrf
*lbaf
= addrf
;
550 ppa64
.m
.grp
= (ppa32
& lbaf
->ch_mask
) >>
552 ppa64
.m
.pu
= (ppa32
& lbaf
->lun_mask
) >>
554 ppa64
.m
.chk
= (ppa32
& lbaf
->chk_mask
) >>
556 ppa64
.m
.sec
= (ppa32
& lbaf
->sec_mask
) >>
564 static inline u32
nvm_ppa64_to_ppa32(struct nvm_dev
*dev
,
565 void *addrf
, struct ppa_addr ppa64
)
569 if (ppa64
.ppa
== ADDR_EMPTY
) {
571 } else if (ppa64
.c
.is_cached
) {
572 ppa32
|= ppa64
.c
.line
;
575 struct nvm_geo
*geo
= &dev
->geo
;
577 if (geo
->version
== NVM_OCSSD_SPEC_12
) {
578 struct nvm_addrf_12
*ppaf
= addrf
;
580 ppa32
|= ppa64
.g
.ch
<< ppaf
->ch_offset
;
581 ppa32
|= ppa64
.g
.lun
<< ppaf
->lun_offset
;
582 ppa32
|= ppa64
.g
.blk
<< ppaf
->blk_offset
;
583 ppa32
|= ppa64
.g
.pg
<< ppaf
->pg_offset
;
584 ppa32
|= ppa64
.g
.pl
<< ppaf
->pln_offset
;
585 ppa32
|= ppa64
.g
.sec
<< ppaf
->sec_offset
;
587 struct nvm_addrf
*lbaf
= addrf
;
589 ppa32
|= ppa64
.m
.grp
<< lbaf
->ch_offset
;
590 ppa32
|= ppa64
.m
.pu
<< lbaf
->lun_offset
;
591 ppa32
|= ppa64
.m
.chk
<< lbaf
->chk_offset
;
592 ppa32
|= ppa64
.m
.sec
<< lbaf
->sec_offset
;
599 static inline int nvm_next_ppa_in_chk(struct nvm_tgt_dev
*dev
,
600 struct ppa_addr
*ppa
)
602 struct nvm_geo
*geo
= &dev
->geo
;
605 if (geo
->version
== NVM_OCSSD_SPEC_12
) {
606 int sec
= ppa
->g
.sec
;
609 if (sec
== geo
->ws_min
) {
614 if (pg
== geo
->num_pg
) {
619 if (pl
== geo
->num_pln
)
629 if (ppa
->m
.sec
== geo
->clba
)
636 typedef blk_qc_t (nvm_tgt_make_rq_fn
)(struct request_queue
*, struct bio
*);
637 typedef sector_t (nvm_tgt_capacity_fn
)(void *);
638 typedef void *(nvm_tgt_init_fn
)(struct nvm_tgt_dev
*, struct gendisk
*,
640 typedef void (nvm_tgt_exit_fn
)(void *, bool);
641 typedef int (nvm_tgt_sysfs_init_fn
)(struct gendisk
*);
642 typedef void (nvm_tgt_sysfs_exit_fn
)(struct gendisk
*);
645 NVM_TGT_F_DEV_L2P
= 0,
646 NVM_TGT_F_HOST_L2P
= 1 << 0,
649 struct nvm_tgt_type
{
651 unsigned int version
[3];
654 /* target entry points */
655 nvm_tgt_make_rq_fn
*make_rq
;
656 nvm_tgt_capacity_fn
*capacity
;
658 /* module-specific init/teardown */
659 nvm_tgt_init_fn
*init
;
660 nvm_tgt_exit_fn
*exit
;
663 nvm_tgt_sysfs_init_fn
*sysfs_init
;
664 nvm_tgt_sysfs_exit_fn
*sysfs_exit
;
666 /* For internal use */
667 struct list_head list
;
668 struct module
*owner
;
671 extern int nvm_register_tgt_type(struct nvm_tgt_type
*);
672 extern void nvm_unregister_tgt_type(struct nvm_tgt_type
*);
674 extern void *nvm_dev_dma_alloc(struct nvm_dev
*, gfp_t
, dma_addr_t
*);
675 extern void nvm_dev_dma_free(struct nvm_dev
*, void *, dma_addr_t
);
677 extern struct nvm_dev
*nvm_alloc_dev(int);
678 extern int nvm_register(struct nvm_dev
*);
679 extern void nvm_unregister(struct nvm_dev
*);
681 extern int nvm_get_chunk_meta(struct nvm_tgt_dev
*, struct ppa_addr
,
682 int, struct nvm_chk_meta
*);
683 extern int nvm_set_chunk_meta(struct nvm_tgt_dev
*, struct ppa_addr
*,
685 extern int nvm_submit_io(struct nvm_tgt_dev
*, struct nvm_rq
*);
686 extern int nvm_submit_io_sync(struct nvm_tgt_dev
*, struct nvm_rq
*);
687 extern void nvm_end_io(struct nvm_rq
*);
689 #else /* CONFIG_NVM */
692 static inline struct nvm_dev
*nvm_alloc_dev(int node
)
694 return ERR_PTR(-EINVAL
);
696 static inline int nvm_register(struct nvm_dev
*dev
)
700 static inline void nvm_unregister(struct nvm_dev
*dev
) {}
701 #endif /* CONFIG_NVM */
702 #endif /* LIGHTNVM.H */