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lightnvm: make geometry structures 2.0 ready

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Prepare for the 2.0 revision by adapting the geometry
structures to coexist with the 1.2 revision.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Matias Bjørling
2018-01-05 14:16:03 +01:00
committed by Jens Axboe
parent bb27aa9ecd
commit fae7fae407
8 changed files with 168 additions and 134 deletions
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52
include/linux/lightnvm.h
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@@ -159,12 +159,16 @@ struct nvm_id_group {
u8 fmtype;
u8 num_ch;
u8 num_lun;
u8 num_pln;
u16 num_blk;
u16 num_pg;
u16 fpg_sz;
u16 num_chk;
u16 clba;
u16 csecs;
u16 sos;
u16 ws_min;
u16 ws_opt;
u16 ws_seq;
u16 ws_per_chk;
u32 trdt;
u32 trdm;
u32 tprt;
@@ -174,6 +178,11 @@ struct nvm_id_group {
u32 mpos;
u32 mccap;
u16 cpar;
/* 1.2 compatibility */
u8 num_pln;
u16 num_pg;
u16 fpg_sz;
};
struct nvm_addr_format {
@@ -259,31 +268,36 @@ enum {
NVM_BLK_ST_BAD = 0x8, /* Bad block */
};
/* Device generic information */
struct nvm_geo {
/* generic geometry */
int nr_chnls;
int nr_luns;
int luns_per_chnl; /* -1 if channels are not symmetric */
int nr_planes;
int sec_per_pg; /* only sectors for a single page */
int pgs_per_blk;
int blks_per_lun;
int fpg_size;
int pfpg_size; /* size of buffer if all pages are to be read */
int all_luns; /* across channels */
int nr_luns; /* per channel */
int nr_chks; /* per lun */
int sec_size;
int oob_size;
int mccap;
int sec_per_chk;
int sec_per_lun;
int ws_min;
int ws_opt;
int ws_seq;
int ws_per_chk;
int max_rq_size;
struct nvm_addr_format ppaf;
/* Calculated/Cached values. These do not reflect the actual usable
* blocks at run-time.
*/
int max_rq_size;
/* Legacy 1.2 specific geometry */
int plane_mode; /* drive device in single, double or quad mode */
int nr_planes;
int sec_per_pg; /* only sectors for a single page */
int sec_per_pl; /* all sectors across planes */
int sec_per_blk;
int sec_per_lun;
};
/* sub-device structure */