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| author | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> | 2018-02-15 15:14:09 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-02-16 02:35:04 +0300 |
| commit | d829fc8a1058851f1058b4a29ea02da125c1684a (patch) | |
| tree | baf7a82c8c97a92ab0cacf794ee88e4853c19e3f /drivers/scsi/ufs/ufs-sysfs.c | |
| parent | 86b87cde0b5581cdb1a7babeb9c4c387761f151b (diff) | |
| download | linux-d829fc8a1058851f1058b4a29ea02da125c1684a.tar.xz | |
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/ufs-sysfs.c')
| -rw-r--r-- | drivers/scsi/ufs/ufs-sysfs.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c index c1aeb8aa3160..cd4d9d039ee9 100644 --- a/drivers/scsi/ufs/ufs-sysfs.c +++ b/drivers/scsi/ufs/ufs-sysfs.c @@ -550,6 +550,59 @@ static const struct attribute_group *ufs_sysfs_groups[] = { NULL, }; +#define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size) \ +static ssize_t _pname##_show(struct device *dev, \ + struct device_attribute *attr, char *buf) \ +{ \ + struct scsi_device *sdev = to_scsi_device(dev); \ + struct ufs_hba *hba = shost_priv(sdev->host); \ + u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); \ + if (!ufs_is_valid_unit_desc_lun(lun)) \ + return -EINVAL; \ + return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \ + lun, _duname##_DESC_PARAM##_puname, buf, _size); \ +} \ +static DEVICE_ATTR_RO(_pname) + +#define UFS_UNIT_DESC_PARAM(_name, _uname, _size) \ + UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size) + +UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1); +UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1); +UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1); +UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1); +UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1); +UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1); +UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1); +UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8); +UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4); +UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1); +UFS_UNIT_DESC_PARAM(physical_memory_resourse_count, _PHY_MEM_RSRC_CNT, 8); +UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2); +UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1); + +static struct attribute *ufs_sysfs_unit_descriptor[] = { + &dev_attr_boot_lun_id.attr, + &dev_attr_lun_write_protect.attr, + &dev_attr_lun_queue_depth.attr, + &dev_attr_psa_sensitive.attr, + &dev_attr_lun_memory_type.attr, + &dev_attr_data_reliability.attr, + &dev_attr_logical_block_size.attr, + &dev_attr_logical_block_count.attr, + &dev_attr_erase_block_size.attr, + &dev_attr_provisioning_type.attr, + &dev_attr_physical_memory_resourse_count.attr, + &dev_attr_context_capabilities.attr, + &dev_attr_large_unit_granularity.attr, + NULL, +}; + +const struct attribute_group ufs_sysfs_unit_descriptor_group = { + .name = "unit_descriptor", + .attrs = ufs_sysfs_unit_descriptor, +}; + void ufs_sysfs_add_nodes(struct device *dev) { int ret; |