Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 12be5edf authored by Matias Bjørling's avatar Matias Bjørling Committed by Jens Axboe
Browse files

lightnvm: expose mccap in identify command 



The mccap field is required for I/O command option support. It defines the
following flash access modes:

 * SLC mode
 * Erase/Program Suspension
 * Scramble On/Off
 * Encryption

It is slotted in between mpos and cpar, changing the offset for
cpar as well.

Signed-off-by: default avatarMatias Bjørling <m@bjorling.me>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 36d5dbc6

drivers/nvme/host/lightnvm.c

+3 −1
Original line number Diff line number Diff line
@@ -169,8 +169,9 @@ struct nvme_nvm_id_group { 
	__le32			tbet;

	__le32			tbem;

	__le32			mpos;

	__le32			mccap;

	__le16			cpar;

	__u8			reserved[910];

	__u8			reserved[906];

} __packed;



struct nvme_nvm_addr_format {
@@ -265,6 +266,7 @@ static int init_grps(struct nvm_id *nvm_id, struct nvme_nvm_id *nvme_nvm_id) 
		dst->tbet = le32_to_cpu(src->tbet);

		dst->tbem = le32_to_cpu(src->tbem);

		dst->mpos = le32_to_cpu(src->mpos);

		dst->mccap = le32_to_cpu(src->mccap);



		dst->cpar = le16_to_cpu(src->cpar);

	}

include/linux/lightnvm.h

+1 −0
Original line number Diff line number Diff line
@@ -74,6 +74,7 @@ struct nvm_id_group { 
	u32	tbet;

	u32	tbem;

	u32	mpos;

	u32	mccap;

	u16	cpar;

	u8	res[913];

} __packed;