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scsi: ufs: sysfs: geometry descriptor

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This patch introduces a sysfs group entry for the UFS geometry descriptor
parameters. The group adds "geometry_descriptor" folder under the UFS
driver sysfs entry (/sys/bus/platform/drivers/ufshcd/*). 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>
This commit is contained in:
Stanislav Nijnikov 2018-02-15 14:14:04 +02:00 committed by Martin K. Petersen
parent 8c2582bfbd
commit c720c09122
3 changed files with 293 additions and 0 deletions
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173
Documentation/ABI/testing/sysfs-driver-ufs
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@ -240,3 +240,176 @@ Description: This file shows the MIPI M-PHY version number in BCD format.
The full information about the descriptor could be found at
UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/raw_device_capacity
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the total memory quantity available to
the user to configure the device logical units. This is one
of the UFS geometry descriptor parameters. The full
information about the descriptor could be found at
UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_number_of_luns
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the maximum number of logical units
supported by the UFS device. This is one of the UFS
geometry descriptor parameters. The full information about
the descriptor could be found at UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/segment_size
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the segment size. This is one of the UFS
geometry descriptor parameters. The full information about
the descriptor could be found at UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/allocation_unit_size
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the allocation unit size. This is one of
the UFS geometry descriptor parameters. The full information
about the descriptor could be found at UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/min_addressable_block_size
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the minimum addressable block size. This
is one of the UFS geometry descriptor parameters. The full
information about the descriptor could be found at UFS
specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/optimal_read_block_size
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the optimal read block size. This is one
of the UFS geometry descriptor parameters. The full
information about the descriptor could be found at UFS
specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/optimal_write_block_size
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the optimal write block size. This is one
of the UFS geometry descriptor parameters. The full
information about the descriptor could be found at UFS
specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_in_buffer_size
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the maximum data-in buffer size. This
is one of the UFS geometry descriptor parameters. The full
information about the descriptor could be found at UFS
specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_out_buffer_size
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the maximum data-out buffer size. This
is one of the UFS geometry descriptor parameters. The full
information about the descriptor could be found at UFS
specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/rpmb_rw_size
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the maximum number of RPMB frames allowed
in Security Protocol In/Out. This is one of the UFS geometry
descriptor parameters. The full information about the
descriptor could be found at UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/dyn_capacity_resource_policy
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the dynamic capacity resource policy. This
is one of the UFS geometry descriptor parameters. The full
information about the descriptor could be found at
UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/data_ordering
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows support for out-of-order data transfer.
This is one of the UFS geometry descriptor parameters.
The full information about the descriptor could be found at
UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_number_of_contexts
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows maximum available number of contexts which
are supported by the device. This is one of the UFS geometry
descriptor parameters. The full information about the
descriptor could be found at UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/sys_data_tag_unit_size
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows system data tag unit size. This is one of
the UFS geometry descriptor parameters. The full information
about the descriptor could be found at UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/sys_data_tag_resource_size
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows maximum storage area size allocated by
the device to handle system data by the tagging mechanism.
This is one of the UFS geometry descriptor parameters.
The full information about the descriptor could be found at
UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/secure_removal_types
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows supported secure removal types. This is
one of the UFS geometry descriptor parameters. The full
information about the descriptor could be found at
UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/memory_types
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows supported memory types. This is one of
the UFS geometry descriptor parameters. The full
information about the descriptor could be found at
UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/*_memory_max_alloc_units
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the maximum number of allocation units for
different memory types (system code, non persistent,
enhanced type 1-4). This is one of the UFS geometry
descriptor parameters. The full information about the
descriptor could be found at UFS specifications 2.1.
The file is read only.
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/*_memory_capacity_adjustment_factor
Date: February 2018
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Description: This file shows the memory capacity adjustment factor for
different memory types (system code, non persistent,
enhanced type 1-4). This is one of the UFS geometry
descriptor parameters. The full information about the
descriptor could be found at UFS specifications 2.1.
The file is read only.

84
drivers/scsi/ufs/ufs-sysfs.c
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@ -266,10 +266,94 @@ static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = {
.attrs = ufs_sysfs_interconnect_descriptor,
};
#define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size) \
UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size)
UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8);
UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1);
UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4);
UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1);
UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1);
UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1);
UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1);
UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1);
UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1);
UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1);
UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1);
UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1);
UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1);
UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1);
UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1);
UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1);
UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2);
UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units,
_SCM_MAX_NUM_UNITS, 4);
UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor,
_SCM_CAP_ADJ_FCTR, 2);
UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units,
_NPM_MAX_NUM_UNITS, 4);
UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor,
_NPM_CAP_ADJ_FCTR, 2);
UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units,
_ENM1_MAX_NUM_UNITS, 4);
UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor,
_ENM1_CAP_ADJ_FCTR, 2);
UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units,
_ENM2_MAX_NUM_UNITS, 4);
UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor,
_ENM2_CAP_ADJ_FCTR, 2);
UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units,
_ENM3_MAX_NUM_UNITS, 4);
UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor,
_ENM3_CAP_ADJ_FCTR, 2);
UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units,
_ENM4_MAX_NUM_UNITS, 4);
UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor,
_ENM4_CAP_ADJ_FCTR, 2);
static struct attribute *ufs_sysfs_geometry_descriptor[] = {
&dev_attr_raw_device_capacity.attr,
&dev_attr_max_number_of_luns.attr,
&dev_attr_segment_size.attr,
&dev_attr_allocation_unit_size.attr,
&dev_attr_min_addressable_block_size.attr,
&dev_attr_optimal_read_block_size.attr,
&dev_attr_optimal_write_block_size.attr,
&dev_attr_max_in_buffer_size.attr,
&dev_attr_max_out_buffer_size.attr,
&dev_attr_rpmb_rw_size.attr,
&dev_attr_dyn_capacity_resource_policy.attr,
&dev_attr_data_ordering.attr,
&dev_attr_max_number_of_contexts.attr,
&dev_attr_sys_data_tag_unit_size.attr,
&dev_attr_sys_data_tag_resource_size.attr,
&dev_attr_secure_removal_types.attr,
&dev_attr_memory_types.attr,
&dev_attr_sys_code_memory_max_alloc_units.attr,
&dev_attr_sys_code_memory_capacity_adjustment_factor.attr,
&dev_attr_non_persist_memory_max_alloc_units.attr,
&dev_attr_non_persist_memory_capacity_adjustment_factor.attr,
&dev_attr_enh1_memory_max_alloc_units.attr,
&dev_attr_enh1_memory_capacity_adjustment_factor.attr,
&dev_attr_enh2_memory_max_alloc_units.attr,
&dev_attr_enh2_memory_capacity_adjustment_factor.attr,
&dev_attr_enh3_memory_max_alloc_units.attr,
&dev_attr_enh3_memory_capacity_adjustment_factor.attr,
&dev_attr_enh4_memory_max_alloc_units.attr,
&dev_attr_enh4_memory_capacity_adjustment_factor.attr,
NULL,
};
static const struct attribute_group ufs_sysfs_geometry_descriptor_group = {
.name = "geometry_descriptor",
.attrs = ufs_sysfs_geometry_descriptor,
};
static const struct attribute_group *ufs_sysfs_groups[] = {
&ufs_sysfs_default_group,
&ufs_sysfs_device_descriptor_group,
&ufs_sysfs_interconnect_descriptor_group,
&ufs_sysfs_geometry_descriptor_group,
NULL,
};

36
drivers/scsi/ufs/ufs.h
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@ -238,6 +238,42 @@ enum interconnect_desc_param {
INTERCONNECT_DESC_PARAM_MPHY_VER = 0x4,
};
/* Geometry descriptor parameters offsets in bytes*/
enum geometry_desc_param {
GEOMETRY_DESC_PARAM_LEN = 0x0,
GEOMETRY_DESC_PARAM_TYPE = 0x1,
GEOMETRY_DESC_PARAM_DEV_CAP = 0x4,
GEOMETRY_DESC_PARAM_MAX_NUM_LUN = 0xC,
GEOMETRY_DESC_PARAM_SEG_SIZE = 0xD,
GEOMETRY_DESC_PARAM_ALLOC_UNIT_SIZE = 0x11,
GEOMETRY_DESC_PARAM_MIN_BLK_SIZE = 0x12,
GEOMETRY_DESC_PARAM_OPT_RD_BLK_SIZE = 0x13,
GEOMETRY_DESC_PARAM_OPT_WR_BLK_SIZE = 0x14,
GEOMETRY_DESC_PARAM_MAX_IN_BUF_SIZE = 0x15,
GEOMETRY_DESC_PARAM_MAX_OUT_BUF_SIZE = 0x16,
GEOMETRY_DESC_PARAM_RPMB_RW_SIZE = 0x17,
GEOMETRY_DESC_PARAM_DYN_CAP_RSRC_PLC = 0x18,
GEOMETRY_DESC_PARAM_DATA_ORDER = 0x19,
GEOMETRY_DESC_PARAM_MAX_NUM_CTX = 0x1A,
GEOMETRY_DESC_PARAM_TAG_UNIT_SIZE = 0x1B,
GEOMETRY_DESC_PARAM_TAG_RSRC_SIZE = 0x1C,
GEOMETRY_DESC_PARAM_SEC_RM_TYPES = 0x1D,
GEOMETRY_DESC_PARAM_MEM_TYPES = 0x1E,
GEOMETRY_DESC_PARAM_SCM_MAX_NUM_UNITS = 0x20,
GEOMETRY_DESC_PARAM_SCM_CAP_ADJ_FCTR = 0x24,
GEOMETRY_DESC_PARAM_NPM_MAX_NUM_UNITS = 0x26,
GEOMETRY_DESC_PARAM_NPM_CAP_ADJ_FCTR = 0x2A,
GEOMETRY_DESC_PARAM_ENM1_MAX_NUM_UNITS = 0x2C,
GEOMETRY_DESC_PARAM_ENM1_CAP_ADJ_FCTR = 0x30,
GEOMETRY_DESC_PARAM_ENM2_MAX_NUM_UNITS = 0x32,
GEOMETRY_DESC_PARAM_ENM2_CAP_ADJ_FCTR = 0x36,
GEOMETRY_DESC_PARAM_ENM3_MAX_NUM_UNITS = 0x38,
GEOMETRY_DESC_PARAM_ENM3_CAP_ADJ_FCTR = 0x3C,
GEOMETRY_DESC_PARAM_ENM4_MAX_NUM_UNITS = 0x3E,
GEOMETRY_DESC_PARAM_ENM4_CAP_ADJ_FCTR = 0x42,
GEOMETRY_DESC_PARAM_OPT_LOG_BLK_SIZE = 0x44,
};
/*
* Logical Unit Write Protect
* 00h: LU not write protected