> From: Bean Huo <beanhuo@xxxxxxxxxx>
>
> For the Micron UFS, L2P entry need to be swapped in HPB READ command
> before sending HPB READ command to the UFS device. Add this quirk
> UFS_DEVICE_QUIRK_SWAP_L2P_ENTRY_FOR_HPB_READ to fix this
> inconsistency.
>
> Fixes: 2fff76f87542 ("scsi: ufs: ufshpb: Prepare HPB read for cached sub-
> region")
Not really needed - the patch is fine.
> Signed-off-by: Bean Huo <beanhuo@xxxxxxxxxx>
Reviewed-by: Avri Altman <avri.altman@xxxxxxx>
> ---
> drivers/scsi/ufs/ufs_quirks.h | 6 ++++++
> drivers/scsi/ufs/ufshcd.c | 3 ++-
> drivers/scsi/ufs/ufshpb.c | 15 ++++++++++-----
> 3 files changed, 18 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h
> index 07f559ac5883..35ec9ea79869 100644
> --- a/drivers/scsi/ufs/ufs_quirks.h
> +++ b/drivers/scsi/ufs/ufs_quirks.h
> @@ -116,4 +116,10 @@ struct ufs_dev_fix {
> */
> #define UFS_DEVICE_QUIRK_DELAY_AFTER_LPM (1 << 11)
>
> +/*
> + * Some UFS devices require L2P entry should be swapped before being sent to
> the
> + * UFS device for HPB READ command.
> + */
> +#define UFS_DEVICE_QUIRK_SWAP_L2P_ENTRY_FOR_HPB_READ (1 << 12)
> +
> #endif /* UFS_QUIRKS_H_ */
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 47a5085f16a9..c3a14d3b0030 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -199,7 +199,8 @@ ufs_get_desired_pm_lvl_for_dev_link_state(enum
> ufs_dev_pwr_mode dev_state,
> static struct ufs_dev_fix ufs_fixups[] = {
> /* UFS cards deviations table */
> UFS_FIX(UFS_VENDOR_MICRON, UFS_ANY_MODEL,
> - UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM),
> + UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM |
> + UFS_DEVICE_QUIRK_SWAP_L2P_ENTRY_FOR_HPB_READ),
> UFS_FIX(UFS_VENDOR_SAMSUNG, UFS_ANY_MODEL,
> UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM |
> UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE |
> diff --git a/drivers/scsi/ufs/ufshpb.c b/drivers/scsi/ufs/ufshpb.c
> index 54e8e019bdbe..d0eb14be47a3 100644
> --- a/drivers/scsi/ufs/ufshpb.c
> +++ b/drivers/scsi/ufs/ufshpb.c
> @@ -323,15 +323,19 @@ ufshpb_get_pos_from_lpn(struct ufshpb_lu *hpb,
> unsigned long lpn, int *rgn_idx,
> }
>
> static void
> -ufshpb_set_hpb_read_to_upiu(struct ufshpb_lu *hpb, struct ufshcd_lrb *lrbp,
> - u32 lpn, __be64 ppn, u8 transfer_len, int read_id)
> +ufshpb_set_hpb_read_to_upiu(struct ufs_hba *hba, struct ufshpb_lu *hpb,
> + struct ufshcd_lrb *lrbp, u32 lpn, __be64 ppn,
> + u8 transfer_len, int read_id)
> {
> unsigned char *cdb = lrbp->cmd->cmnd;
> -
> + __be64 ppn_tmp = ppn;
> cdb[0] = UFSHPB_READ;
>
> + if (hba->dev_quirks &
> UFS_DEVICE_QUIRK_SWAP_L2P_ENTRY_FOR_HPB_READ)
> + ppn_tmp = swab64(ppn);
> +
> /* ppn value is stored as big-endian in the host memory */
> - memcpy(&cdb[6], &ppn, sizeof(__be64));
> + memcpy(&cdb[6], &ppn_tmp, sizeof(__be64));
> cdb[14] = transfer_len;
> cdb[15] = read_id;
>
> @@ -689,7 +693,8 @@ int ufshpb_prep(struct ufs_hba *hba, struct ufshcd_lrb
> *lrbp)
> }
> }
>
> - ufshpb_set_hpb_read_to_upiu(hpb, lrbp, lpn, ppn, transfer_len, read_id);
> + ufshpb_set_hpb_read_to_upiu(hba, hpb, lrbp, lpn, ppn, transfer_len,
> + read_id);
>
> hpb->stats.hit_cnt++;
> return 0;
> --
> 2.25.1
