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Commit f9a99950 authored by Matias Bjørling's avatar Matias Bjørling Committed by Jens Axboe
Browse files

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: default avatarMatias Bjørling <m@bjorling.me>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent ff0e498b

drivers/lightnvm/core.c

+1 −0
Original line number Diff line number Diff line
@@ -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;

include/linux/lightnvm.h

+7 −0
Original line number Diff line number Diff line
@@ -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