diff options
| author | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> | 2018-02-15 14:14:09 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-02-15 18:35:04 -0500 |
| commit | d829fc8a1058851f1058b4a29ea02da125c1684a (patch) | |
| tree | baf7a82c8c97a92ab0cacf794ee88e4853c19e3f /drivers/scsi/ufs/ufshcd.c | |
| parent | 86b87cde0b5581cdb1a7babeb9c4c387761f151b (diff) | |
| download | linux-d829fc8a1058851f1058b4a29ea02da125c1684a.tar.gz linux-d829fc8a1058851f1058b4a29ea02da125c1684a.tar.bz2 linux-d829fc8a1058851f1058b4a29ea02da125c1684a.zip | |
scsi: ufs: sysfs: unit descriptor
This patch introduces a sysfs group entry for the UFS unit descriptor
parameters. The group adds "unit_descriptor" folder under the corresponding
SCSI device sysfs entry (/sys/class/scsi_device/*/device/). The parameters
are shown as hexadecimal numbers. The full information about the parameters
could be found at UFS specifications 2.1.
Signed-off-by: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.c')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 23 |
1 files changed, 7 insertions, 16 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 9cfdd8ed198a..ace3acdc9a5b 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -2222,21 +2222,6 @@ static int ufshcd_comp_scsi_upiu(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) return ret; } -/* - * ufshcd_scsi_to_upiu_lun - maps scsi LUN to UPIU LUN - * @scsi_lun: scsi LUN id - * - * Returns UPIU LUN id - */ -static inline u8 ufshcd_scsi_to_upiu_lun(unsigned int scsi_lun) -{ - if (scsi_is_wlun(scsi_lun)) - return (scsi_lun & UFS_UPIU_MAX_UNIT_NUM_ID) - | UFS_UPIU_WLUN_ID; - else - return scsi_lun & UFS_UPIU_MAX_UNIT_NUM_ID; -} - /** * ufshcd_upiu_wlun_to_scsi_wlun - maps UPIU W-LUN id to SCSI W-LUN ID * @scsi_lun: UPIU W-LUN id @@ -3171,7 +3156,7 @@ static inline int ufshcd_read_unit_desc_param(struct ufs_hba *hba, * Unit descriptors are only available for general purpose LUs (LUN id * from 0 to 7) and RPMB Well known LU. */ - if (lun != UFS_UPIU_RPMB_WLUN && (lun >= UFS_UPIU_MAX_GENERAL_LUN)) + if (!ufs_is_valid_unit_desc_lun(lun)) return -EOPNOTSUPP; return ufshcd_read_desc_param(hba, QUERY_DESC_IDN_UNIT, lun, @@ -6481,6 +6466,11 @@ static enum blk_eh_timer_return ufshcd_eh_timed_out(struct scsi_cmnd *scmd) return found ? BLK_EH_NOT_HANDLED : BLK_EH_RESET_TIMER; } +static const struct attribute_group *ufshcd_driver_groups[] = { + &ufs_sysfs_unit_descriptor_group, + NULL, +}; + static struct scsi_host_template ufshcd_driver_template = { .module = THIS_MODULE, .name = UFSHCD, @@ -6500,6 +6490,7 @@ static struct scsi_host_template ufshcd_driver_template = { .can_queue = UFSHCD_CAN_QUEUE, .max_host_blocked = 1, .track_queue_depth = 1, + .sdev_groups = ufshcd_driver_groups, }; static int ufshcd_config_vreg_load(struct device *dev, struct ufs_vreg *vreg, |