> On 5 Feb 2018, at 13.15, Matias Bjørling <m...@lightnvm.io> wrote:
> 
> Implement the geometry data structures for 2.0 and enable a drive
> to be identified as one, including exposing the appropriate 2.0
> sysfs entries.
> 
> Signed-off-by: Matias Bjørling <m...@lightnvm.io>
> ---
> drivers/lightnvm/core.c      |   2 +-
> drivers/nvme/host/lightnvm.c | 334 +++++++++++++++++++++++++++++++++++++------
> include/linux/lightnvm.h     |  11 +-
> 3 files changed, 295 insertions(+), 52 deletions(-)
> 
> diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
> index c72863b36439..250e74dfa120 100644
> --- a/drivers/lightnvm/core.c
> +++ b/drivers/lightnvm/core.c
> @@ -934,7 +934,7 @@ static int nvm_init(struct nvm_dev *dev)
>       pr_debug("nvm: ver:%x nvm_vendor:%x\n",
>                       dev->identity.ver_id, dev->identity.vmnt);
> 
> -     if (dev->identity.ver_id != 1) {
> +     if (dev->identity.ver_id != 1 && dev->identity.ver_id != 2) {
>               pr_err("nvm: device not supported by kernel.");
>               goto err;
>       }
> diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
> index 6412551ecc65..a9c010655ccc 100644
> --- a/drivers/nvme/host/lightnvm.c
> +++ b/drivers/nvme/host/lightnvm.c
> @@ -184,6 +184,58 @@ struct nvme_nvm_bb_tbl {
>       __u8    blk[0];
> };
> 
> +struct nvme_nvm_id20_addrf {
> +     __u8                    grp_len;
> +     __u8                    pu_len;
> +     __u8                    chk_len;
> +     __u8                    lba_len;
> +     __u8                    resv[4];
> +};
> +
> +struct nvme_nvm_id20 {
> +     __u8                    mjr;
> +     __u8                    mnr;
> +     __u8                    resv[6];
> +
> +     struct nvme_nvm_id20_addrf lbaf;
> +
> +     __u32                   mccap;
> +     __u8                    resv2[12];
> +
> +     __u8                    wit;
> +     __u8                    resv3[31];
> +
> +     /* Geometry */
> +     __u16                   num_grp;
> +     __u16                   num_pu;
> +     __u32                   num_chk;
> +     __u32                   clba;
> +     __u8                    resv4[52];
> +
> +     /* Write data requirements */
> +     __u32                   ws_min;
> +     __u32                   ws_opt;
> +     __u32                   mw_cunits;
> +     __u32                   maxoc;
> +     __u32                   maxocpu;
> +     __u8                    resv5[44];
> +
> +     /* Performance related metrics */
> +     __u32                   trdt;
> +     __u32                   trdm;
> +     __u32                   twrt;
> +     __u32                   twrm;
> +     __u32                   tcrst;
> +     __u32                   tcrsm;
> +     __u8                    resv6[40];
> +
> +     /* Reserved area */
> +     __u8                    resv7[2816];
> +
> +     /* Vendor specific */
> +     __u8                    vs[1024];
> +};
> 

All __u16, __u32 should be __le16, __le32

Javier

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