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lightnvm: add mccap support 

Some flash media has extended capabilities, such as programming SLC
pages on MLC/TLC flash, erase/program suspend, scramble and encryption.
MCCAP is introduced to detect support for these capabilities in the
command set.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Matias Bjørling 2016-01-12 07:49:34 +01:00 committed by Jens Axboe
parent ff0e498bfa
commit f9a9995072
2 changed files with 8 additions and 0 deletions
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1
drivers/lightnvm/core.c
View File

@ -376,6 +376,7 @@ static int nvm_core_init(struct nvm_dev *dev)
dev->sec_size = grp->csecs;
dev->oob_size = grp->sos;
dev->sec_per_pg = grp->fpg_sz / grp->csecs;
dev->mccap = grp->mccap;
memcpy(&dev->ppaf, &id->ppaf, sizeof(struct nvm_addr_format));
dev->plane_mode = NVM_PLANE_SINGLE;

7
include/linux/lightnvm.h
View File

@ -61,6 +61,12 @@ enum {
NVM_BLK_T_GRWN_BAD = 0x2,
NVM_BLK_T_DEV = 0x4,
NVM_BLK_T_HOST = 0x8,
/* Memory capabilities */
NVM_ID_CAP_SLC = 0x1,
NVM_ID_CAP_CMD_SUSPEND = 0x2,
NVM_ID_CAP_SCRAMBLE = 0x4,
NVM_ID_CAP_ENCRYPT = 0x8,
};
struct nvm_id_group {
@ -278,6 +284,7 @@ struct nvm_dev {
int blks_per_lun;
int sec_size;
int oob_size;
int mccap;
struct nvm_addr_format ppaf;
/* Calculated/Cached values. These do not reflect the actual usable