요약·해설과 원문, 전문 번역을 서로 분리했습니다. API 이름, symbol, source path는 원문 표기를 사용합니다.
1. 요약·해설
원문의 핵심 논리와 kernel programming 관점의 보충 설명입니다. 아래의 전문 번역과는 별도로 작성했습니다.
Logical units, flags and device attributes
sysfs-driver-ufs:621-993Logical-unit block layout와 provisioning, write protection, background operations, firmware, PSA, event, transfer-limit attributes를 제공하며 대부분 read-only이고 `max_number_of_rtt`만 제한된 조건에서 갱신할 수 있습니다.
Power levels, performance monitor and link state
sysfs-driver-ufs:994-1276Runtime·system power levels 0~6이 device와 UIC link state를 조합하고, performance monitor는 read/write sectors, busy time, request count와 latency를 수집하며 power_info는 현재 lanes, mode, rate, gear와 states를 표시합니다.
WriteBooster configuration and flushing
sysfs-driver-ufs:1277-1490WriteBooster의 shared 또는 dedicated buffer geometry, enable·flush flags, available buffer, lifetime, runtime control과 10% 단위 flush threshold를 설명합니다.
Capabilities, health, clock and exceptions
sysfs-driver-ufs:1491-1639Host-device capability intersection, RTC synchronization, UFSHCI identity registers, critical-health count, clock scaling·gating controls와 JEDEC 4.1 device-level exception counter 및 vendor-specific ID를 제공합니다.
WriteBooster resize and HID defragmentation
sysfs-driver-ufs:1640-1770WriteBooster buffer resize command·hint·status와 HID analysis 및 defragmentation triggers, fragmented size, requested size, progress ratio와 state machine을 제공합니다.
2. 영어 원문 전체
번역 기준이 된 Linux v6.18.37 원문입니다. 줄 번호는 이 버전의 파일 좌표입니다.
원문 전체 펼치기
1
What: /sys/bus/*/drivers/ufshcd/*/auto_hibern8
2
Date: March 2018
3
Contact: linux-scsi@vger.kernel.org
4
Description:
5
This file contains the auto-hibernate idle timer setting of a
6
UFS host controller. A value of '0' means auto-hibernate is not
7
enabled. Otherwise the value is the number of microseconds of
8
idle time before the UFS host controller will autonomously put
9
the link into hibernate state. That will save power at the
10
expense of increased latency. Note that the hardware supports
11
10-bit values with a power-of-ten multiplier which allows a
12
maximum value of 102300000. Refer to the UFS Host Controller
13
Interface specification for more details.
15
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_type
16
What: /sys/bus/platform/devices/*.ufs/device_descriptor/device_type
17
Date: February 2018
18
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
19
Description: This file shows the device type. This is one of the UFS
20
device descriptor parameters. The full information about
21
the descriptor could be found at UFS specifications 2.1.
23
The file is read only.
25
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_class
26
What: /sys/bus/platform/devices/*.ufs/device_descriptor/device_class
27
Date: February 2018
28
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
29
Description: This file shows the device class. This is one of the UFS
30
device descriptor parameters. The full information about
31
the descriptor could be found at UFS specifications 2.1.
33
The file is read only.
35
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_sub_class
36
What: /sys/bus/platform/devices/*.ufs/device_descriptor/device_sub_class
37
Date: February 2018
38
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
39
Description: This file shows the UFS storage subclass. This is one of
40
the UFS device descriptor parameters. The full information
41
about the descriptor could be found at UFS specifications 2.1.
43
The file is read only.
45
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/protocol
46
What: /sys/bus/platform/devices/*.ufs/device_descriptor/protocol
47
Date: February 2018
48
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
49
Description: This file shows the protocol supported by an UFS device.
50
This is one of the UFS device descriptor parameters.
51
The full information about the descriptor could be found
52
at UFS specifications 2.1.
54
The file is read only.
56
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_luns
57
What: /sys/bus/platform/devices/*.ufs/device_descriptor/number_of_luns
58
Date: February 2018
59
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
60
Description: This file shows number of logical units. This is one of
61
the UFS device descriptor parameters. The full information
62
about the descriptor could be found at UFS specifications 2.1.
64
The file is read only.
66
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_wluns
67
What: /sys/bus/platform/devices/*.ufs/device_descriptor/number_of_wluns
68
Date: February 2018
69
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
70
Description: This file shows number of well known logical units.
71
This is one of the UFS device descriptor parameters.
72
The full information about the descriptor could be found
73
at UFS specifications 2.1.
75
The file is read only.
77
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/boot_enable
78
What: /sys/bus/platform/devices/*.ufs/device_descriptor/boot_enable
79
Date: February 2018
80
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
81
Description: This file shows value that indicates whether the device is
82
enabled for boot. This is one of the UFS device descriptor
83
parameters. The full information about the descriptor could
84
be found at UFS specifications 2.1.
86
The file is read only.
88
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/descriptor_access_enable
89
What: /sys/bus/platform/devices/*.ufs/device_descriptor/descriptor_access_enable
90
Date: February 2018
91
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
92
Description: This file shows value that indicates whether the device
93
descriptor could be read after partial initialization phase
94
of the boot sequence. This is one of the UFS device descriptor
95
parameters. The full information about the descriptor could
96
be found at UFS specifications 2.1.
98
The file is read only.
100
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/initial_power_mode
101
What: /sys/bus/platform/devices/*.ufs/device_descriptor/initial_power_mode
102
Date: February 2018
103
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
104
Description: This file shows value that defines the power mode after
105
device initialization or hardware reset. This is one of
106
the UFS device descriptor parameters. The full information
107
about the descriptor could be found at UFS specifications 2.1.
109
The file is read only.
111
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/high_priority_lun
112
What: /sys/bus/platform/devices/*.ufs/device_descriptor/high_priority_lun
113
Date: February 2018
114
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
115
Description: This file shows the high priority lun. This is one of
116
the UFS device descriptor parameters. The full information
117
about the descriptor could be found at UFS specifications 2.1.
119
The file is read only.
121
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/secure_removal_type
122
What: /sys/bus/platform/devices/*.ufs/device_descriptor/secure_removal_type
123
Date: February 2018
124
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
125
Description: This file shows the secure removal type. This is one of
126
the UFS device descriptor parameters. The full information
127
about the descriptor could be found at UFS specifications 2.1.
129
The file is read only.
131
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/support_security_lun
132
What: /sys/bus/platform/devices/*.ufs/device_descriptor/support_security_lun
133
Date: February 2018
134
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
135
Description: This file shows whether the security lun is supported.
136
This is one of the UFS device descriptor parameters.
137
The full information about the descriptor could be found
138
at UFS specifications 2.1.
140
The file is read only.
142
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/bkops_termination_latency
143
What: /sys/bus/platform/devices/*.ufs/device_descriptor/bkops_termination_latency
144
Date: February 2018
145
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
146
Description: This file shows the background operations termination
147
latency. This is one of the UFS device descriptor parameters.
148
The full information about the descriptor could be found
149
at UFS specifications 2.1.
151
The file is read only.
153
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/initial_active_icc_level
154
What: /sys/bus/platform/devices/*.ufs/device_descriptor/initial_active_icc_level
155
Date: February 2018
156
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
157
Description: This file shows the initial active ICC level. This is one
158
of the UFS device descriptor parameters. The full information
159
about the descriptor could be found at UFS specifications 2.1.
161
The file is read only.
163
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/specification_version
164
What: /sys/bus/platform/devices/*.ufs/device_descriptor/specification_version
165
Date: February 2018
166
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
167
Description: This file shows the specification version. This is one
168
of the UFS device descriptor parameters. The full information
169
about the descriptor could be found at UFS specifications 2.1.
171
The file is read only.
173
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/manufacturing_date
174
What: /sys/bus/platform/devices/*.ufs/device_descriptor/manufacturing_date
175
Date: February 2018
176
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
177
Description: This file shows the manufacturing date in BCD format.
178
This is one of the UFS device descriptor parameters.
179
The full information about the descriptor could be found
180
at UFS specifications 2.1.
182
The file is read only.
184
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/manufacturer_id
185
What: /sys/bus/platform/devices/*.ufs/device_descriptor/manufacturer_id
186
Date: February 2018
187
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
188
Description: This file shows the manufacturer ID. This is one of the
189
UFS device descriptor parameters. The full information about
190
the descriptor could be found at UFS specifications 2.1.
192
The file is read only.
194
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/rtt_capability
195
What: /sys/bus/platform/devices/*.ufs/device_descriptor/rtt_capability
196
Date: February 2018
197
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
198
Description: This file shows the maximum number of outstanding RTTs
199
supported by the device. This is one of the UFS device
200
descriptor parameters. The full information about
201
the descriptor could be found at UFS specifications 2.1.
203
The file is read only.
205
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/rtc_update
206
What: /sys/bus/platform/devices/*.ufs/device_descriptor/rtc_update
207
Date: February 2018
208
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
209
Description: This file shows the frequency and method of the realtime
210
clock update. This is one of the UFS device descriptor
211
parameters. The full information about the descriptor
212
could be found at UFS specifications 2.1.
214
The file is read only.
216
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/ufs_features
217
What: /sys/bus/platform/devices/*.ufs/device_descriptor/ufs_features
218
Date: February 2018
219
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
220
Description: This file shows which features are supported by the device.
221
This is one of the UFS device descriptor parameters.
222
The full information about the descriptor could be
223
found at UFS specifications 2.1.
225
The file is read only.
227
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/ffu_timeout
228
What: /sys/bus/platform/devices/*.ufs/device_descriptor/ffu_timeout
229
Date: February 2018
230
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
231
Description: This file shows the FFU timeout. This is one of the
232
UFS device descriptor parameters. The full information
233
about the descriptor could be found at UFS specifications 2.1.
235
The file is read only.
237
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/queue_depth
238
What: /sys/bus/platform/devices/*.ufs/device_descriptor/queue_depth
239
Date: February 2018
240
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
241
Description: This file shows the device queue depth. This is one of the
242
UFS device descriptor parameters. The full information
243
about the descriptor could be found at UFS specifications 2.1.
245
The file is read only.
247
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_version
248
What: /sys/bus/platform/devices/*.ufs/device_descriptor/device_version
249
Date: February 2018
250
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
251
Description: This file shows the device version. This is one of the
252
UFS device descriptor parameters. The full information
253
about the descriptor could be found at UFS specifications 2.1.
255
The file is read only.
257
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_secure_wpa
258
What: /sys/bus/platform/devices/*.ufs/device_descriptor/number_of_secure_wpa
259
Date: February 2018
260
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
261
Description: This file shows number of secure write protect areas
262
supported by the device. This is one of the UFS device
263
descriptor parameters. The full information about
264
the descriptor could be found at UFS specifications 2.1.
266
The file is read only.
268
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/psa_max_data_size
269
What: /sys/bus/platform/devices/*.ufs/device_descriptor/psa_max_data_size
270
Date: February 2018
271
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
272
Description: This file shows the maximum amount of data that may be
273
written during the pre-soldering phase of the PSA flow.
274
This is one of the UFS device descriptor parameters.
275
The full information about the descriptor could be found
276
at UFS specifications 2.1.
278
The file is read only.
280
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/psa_state_timeout
281
What: /sys/bus/platform/devices/*.ufs/device_descriptor/psa_state_timeout
282
Date: February 2018
283
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
284
Description: This file shows the command maximum timeout for a change
285
in PSA state. This is one of the UFS device descriptor
286
parameters. The full information about the descriptor could
287
be found at UFS specifications 2.1.
289
The file is read only.
292
What: /sys/bus/platform/drivers/ufshcd/*/interconnect_descriptor/unipro_version
293
What: /sys/bus/platform/devices/*.ufs/interconnect_descriptor/unipro_version
294
Date: February 2018
295
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
296
Description: This file shows the MIPI UniPro version number in BCD format.
297
This is one of the UFS interconnect descriptor parameters.
298
The full information about the descriptor could be found at
299
UFS specifications 2.1.
301
The file is read only.
303
What: /sys/bus/platform/drivers/ufshcd/*/interconnect_descriptor/mphy_version
304
What: /sys/bus/platform/devices/*.ufs/interconnect_descriptor/mphy_version
305
Date: February 2018
306
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
307
Description: This file shows the MIPI M-PHY version number in BCD format.
308
This is one of the UFS interconnect descriptor parameters.
309
The full information about the descriptor could be found at
310
UFS specifications 2.1.
312
The file is read only.
315
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/raw_device_capacity
316
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/raw_device_capacity
317
Date: February 2018
318
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
319
Description: This file shows the total memory quantity available to
320
the user to configure the device logical units. This is one
321
of the UFS geometry descriptor parameters. The full
322
information about the descriptor could be found at
323
UFS specifications 2.1.
325
The file is read only.
327
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_number_of_luns
328
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/max_number_of_luns
329
Date: February 2018
330
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
331
Description: This file shows the maximum number of logical units
332
supported by the UFS device. This is one of the UFS
333
geometry descriptor parameters. The full information about
334
the descriptor could be found at UFS specifications 2.1.
336
The file is read only.
338
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/segment_size
339
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/segment_size
340
Date: February 2018
341
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
342
Description: This file shows the segment size. This is one of the UFS
343
geometry descriptor parameters. The full information about
344
the descriptor could be found at UFS specifications 2.1.
346
The file is read only.
348
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/allocation_unit_size
349
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/allocation_unit_size
350
Date: February 2018
351
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
352
Description: This file shows the allocation unit size. This is one of
353
the UFS geometry descriptor parameters. The full information
354
about the descriptor could be found at UFS specifications 2.1.
356
The file is read only.
358
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/min_addressable_block_size
359
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/min_addressable_block_size
360
Date: February 2018
361
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
362
Description: This file shows the minimum addressable block size. This
363
is one of the UFS geometry descriptor parameters. The full
364
information about the descriptor could be found at UFS
365
specifications 2.1.
367
The file is read only.
369
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/optimal_read_block_size
370
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/optimal_read_block_size
371
Date: February 2018
372
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
373
Description: This file shows the optimal read block size. This is one
374
of the UFS geometry descriptor parameters. The full
375
information about the descriptor could be found at UFS
376
specifications 2.1.
378
The file is read only.
380
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/optimal_write_block_size
381
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/optimal_write_block_size
382
Date: February 2018
383
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
384
Description: This file shows the optimal write block size. This is one
385
of the UFS geometry descriptor parameters. The full
386
information about the descriptor could be found at UFS
387
specifications 2.1.
389
The file is read only.
391
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_in_buffer_size
392
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/max_in_buffer_size
393
Date: February 2018
394
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
395
Description: This file shows the maximum data-in buffer size. This
396
is one of the UFS geometry descriptor parameters. The full
397
information about the descriptor could be found at UFS
398
specifications 2.1.
400
The file is read only.
402
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_out_buffer_size
403
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/max_out_buffer_size
404
Date: February 2018
405
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
406
Description: This file shows the maximum data-out buffer size. This
407
is one of the UFS geometry descriptor parameters. The full
408
information about the descriptor could be found at UFS
409
specifications 2.1.
411
The file is read only.
413
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/rpmb_rw_size
414
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/rpmb_rw_size
415
Date: February 2018
416
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
417
Description: This file shows the maximum number of RPMB frames allowed
418
in Security Protocol In/Out. This is one of the UFS geometry
419
descriptor parameters. The full information about the
420
descriptor could be found at UFS specifications 2.1.
422
The file is read only.
424
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/dyn_capacity_resource_policy
425
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/dyn_capacity_resource_policy
426
Date: February 2018
427
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
428
Description: This file shows the dynamic capacity resource policy. This
429
is one of the UFS geometry descriptor parameters. The full
430
information about the descriptor could be found at
431
UFS specifications 2.1.
433
The file is read only.
435
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/data_ordering
436
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/data_ordering
437
Date: February 2018
438
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
439
Description: This file shows support for out-of-order data transfer.
440
This is one of the UFS geometry descriptor parameters.
441
The full information about the descriptor could be found at
442
UFS specifications 2.1.
444
The file is read only.
446
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_number_of_contexts
447
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/max_number_of_contexts
448
Date: February 2018
449
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
450
Description: This file shows maximum available number of contexts which
451
are supported by the device. This is one of the UFS geometry
452
descriptor parameters. The full information about the
453
descriptor could be found at UFS specifications 2.1.
455
The file is read only.
457
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/sys_data_tag_unit_size
458
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/sys_data_tag_unit_size
459
Date: February 2018
460
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
461
Description: This file shows system data tag unit size. This is one of
462
the UFS geometry descriptor parameters. The full information
463
about the descriptor could be found at UFS specifications 2.1.
465
The file is read only.
467
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/sys_data_tag_resource_size
468
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/sys_data_tag_resource_size
469
Date: February 2018
470
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
471
Description: This file shows maximum storage area size allocated by
472
the device to handle system data by the tagging mechanism.
473
This is one of the UFS geometry descriptor parameters.
474
The full information about the descriptor could be found at
475
UFS specifications 2.1.
477
The file is read only.
479
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/secure_removal_types
480
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/secure_removal_types
481
Date: February 2018
482
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
483
Description: This file shows supported secure removal types. This is
484
one of the UFS geometry descriptor parameters. The full
485
information about the descriptor could be found at
486
UFS specifications 2.1.
488
The file is read only.
490
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/memory_types
491
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/memory_types
492
Date: February 2018
493
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
494
Description: This file shows supported memory types. This is one of
495
the UFS geometry descriptor parameters. The full
496
information about the descriptor could be found at
497
UFS specifications 2.1.
499
The file is read only.
501
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/*_memory_max_alloc_units
502
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/*_memory_max_alloc_units
503
Date: February 2018
504
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
505
Description: This file shows the maximum number of allocation units for
506
different memory types (system code, non persistent,
507
enhanced type 1-4). This is one of the UFS geometry
508
descriptor parameters. The full information about the
509
descriptor could be found at UFS specifications 2.1.
511
The file is read only.
513
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/*_memory_capacity_adjustment_factor
514
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/*_memory_capacity_adjustment_factor
515
Date: February 2018
516
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
517
Description: This file shows the memory capacity adjustment factor for
518
different memory types (system code, non persistent,
519
enhanced type 1-4). This is one of the UFS geometry
520
descriptor parameters. The full information about the
521
descriptor could be found at UFS specifications 2.1.
523
The file is read only.
526
What: /sys/bus/platform/drivers/ufshcd/*/health_descriptor/eol_info
527
What: /sys/bus/platform/devices/*.ufs/health_descriptor/eol_info
528
Date: February 2018
529
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
530
Description: This file shows preend of life information. This is one
531
of the UFS health descriptor parameters. The full
532
information about the descriptor could be found at
533
UFS specifications 2.1.
535
The file is read only.
537
What: /sys/bus/platform/drivers/ufshcd/*/health_descriptor/life_time_estimation_a
538
What: /sys/bus/platform/devices/*.ufs/health_descriptor/life_time_estimation_a
539
Date: February 2018
540
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
541
Description: This file shows indication of the device life time
542
(method a). This is one of the UFS health descriptor
543
parameters. The full information about the descriptor
544
could be found at UFS specifications 2.1.
546
The file is read only.
548
What: /sys/bus/platform/drivers/ufshcd/*/health_descriptor/life_time_estimation_b
549
What: /sys/bus/platform/devices/*.ufs/health_descriptor/life_time_estimation_b
550
Date: February 2018
551
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
552
Description: This file shows indication of the device life time
553
(method b). This is one of the UFS health descriptor
554
parameters. The full information about the descriptor
555
could be found at UFS specifications 2.1.
557
The file is read only.
560
What: /sys/bus/platform/drivers/ufshcd/*/power_descriptor/active_icc_levels_vcc*
561
What: /sys/bus/platform/devices/*.ufs/power_descriptor/active_icc_levels_vcc*
562
Date: February 2018
563
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
564
Description: This file shows maximum VCC, VCCQ and VCCQ2 value for
565
active ICC levels from 0 to 15. This is one of the UFS
566
power descriptor parameters. The full information about
567
the descriptor could be found at UFS specifications 2.1.
569
The file is read only.
572
What: /sys/bus/platform/drivers/ufshcd/*/string_descriptors/manufacturer_name
573
What: /sys/bus/platform/devices/*.ufs/string_descriptors/manufacturer_name
574
Date: February 2018
575
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
576
Description: This file contains a device manufacturer name string.
577
The full information about the descriptor could be found at
578
UFS specifications 2.1.
580
The file is read only.
582
What: /sys/bus/platform/drivers/ufshcd/*/string_descriptors/product_name
583
What: /sys/bus/platform/devices/*.ufs/string_descriptors/product_name
584
Date: February 2018
585
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
586
Description: This file contains a product name string. The full information
587
about the descriptor could be found at UFS specifications 2.1.
589
The file is read only.
591
What: /sys/bus/platform/drivers/ufshcd/*/string_descriptors/oem_id
592
What: /sys/bus/platform/devices/*.ufs/string_descriptors/oem_id
593
Date: February 2018
594
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
595
Description: This file contains a OEM ID string. The full information
596
about the descriptor could be found at UFS specifications 2.1.
598
The file is read only.
600
What: /sys/bus/platform/drivers/ufshcd/*/string_descriptors/serial_number
601
What: /sys/bus/platform/devices/*.ufs/string_descriptors/serial_number
602
Date: February 2018
603
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
604
Description: This file contains a device serial number string. The full
605
information about the descriptor could be found at
606
UFS specifications 2.1.
608
The file is read only.
610
What: /sys/bus/platform/drivers/ufshcd/*/string_descriptors/product_revision
611
What: /sys/bus/platform/devices/*.ufs/string_descriptors/product_revision
612
Date: February 2018
613
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
614
Description: This file contains a product revision string. The full
615
information about the descriptor could be found at
616
UFS specifications 2.1.
618
The file is read only.
621
What: /sys/class/scsi_device/*/device/unit_descriptor/boot_lun_id
622
Date: February 2018
623
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
624
Description: This file shows boot LUN information. This is one of
625
the UFS unit descriptor parameters. The full information
626
about the descriptor could be found at UFS specifications 2.1.
628
The file is read only.
630
What: /sys/class/scsi_device/*/device/unit_descriptor/lun_write_protect
631
Date: February 2018
632
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
633
Description: This file shows LUN write protection status. This is one of
634
the UFS unit descriptor parameters. The full information
635
about the descriptor could be found at UFS specifications 2.1.
637
The file is read only.
639
What: /sys/class/scsi_device/*/device/unit_descriptor/lun_queue_depth
640
Date: February 2018
641
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
642
Description: This file shows LUN queue depth. This is one of the UFS
643
unit descriptor parameters. The full information about
644
the descriptor could be found at UFS specifications 2.1.
646
The file is read only.
648
What: /sys/class/scsi_device/*/device/unit_descriptor/psa_sensitive
649
Date: February 2018
650
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
651
Description: This file shows PSA sensitivity. This is one of the UFS
652
unit descriptor parameters. The full information about
653
the descriptor could be found at UFS specifications 2.1.
655
The file is read only.
657
What: /sys/class/scsi_device/*/device/unit_descriptor/lun_memory_type
658
Date: February 2018
659
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
660
Description: This file shows LUN memory type. This is one of the UFS
661
unit descriptor parameters. The full information about
662
the descriptor could be found at UFS specifications 2.1.
664
The file is read only.
666
What: /sys/class/scsi_device/*/device/unit_descriptor/data_reliability
667
Date: February 2018
668
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
669
Description: This file defines the device behavior when a power failure
670
occurs during a write operation. This is one of the UFS
671
unit descriptor parameters. The full information about
672
the descriptor could be found at UFS specifications 2.1.
674
The file is read only.
676
What: /sys/class/scsi_device/*/device/unit_descriptor/logical_block_size
677
Date: February 2018
678
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
679
Description: This file shows the size of addressable logical blocks
680
(calculated as an exponent with base 2). This is one of
681
the UFS unit descriptor parameters. The full information about
682
the descriptor could be found at UFS specifications 2.1.
684
The file is read only.
686
What: /sys/class/scsi_device/*/device/unit_descriptor/logical_block_count
687
Date: February 2018
688
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
689
Description: This file shows total number of addressable logical blocks.
690
This is one of the UFS unit descriptor parameters. The full
691
information about the descriptor could be found at
692
UFS specifications 2.1.
694
The file is read only.
696
What: /sys/class/scsi_device/*/device/unit_descriptor/erase_block_size
697
Date: February 2018
698
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
699
Description: This file shows the erase block size. This is one of
700
the UFS unit descriptor parameters. The full information
701
about the descriptor could be found at UFS specifications 2.1.
703
The file is read only.
705
What: /sys/class/scsi_device/*/device/unit_descriptor/provisioning_type
706
Date: February 2018
707
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
708
Description: This file shows the thin provisioning type. This is one of
709
the UFS unit descriptor parameters. The full information
710
about the descriptor could be found at UFS specifications 2.1.
712
The file is read only.
714
What: /sys/class/scsi_device/*/device/unit_descriptor/physical_memory_resource_count
715
Date: February 2018
716
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
717
Description: This file shows the total physical memory resources. This is
718
one of the UFS unit descriptor parameters. The full information
719
about the descriptor could be found at UFS specifications 2.1.
721
The file is read only.
723
What: /sys/class/scsi_device/*/device/unit_descriptor/context_capabilities
724
Date: February 2018
725
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
726
Description: This file shows the context capabilities. This is one of
727
the UFS unit descriptor parameters. The full information
728
about the descriptor could be found at UFS specifications 2.1.
730
The file is read only.
732
What: /sys/class/scsi_device/*/device/unit_descriptor/large_unit_granularity
733
Date: February 2018
734
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
735
Description: This file shows the granularity of the LUN. This is one of
736
the UFS unit descriptor parameters. The full information
737
about the descriptor could be found at UFS specifications 2.1.
739
The file is read only.
742
What: /sys/bus/platform/drivers/ufshcd/*/flags/device_init
743
What: /sys/bus/platform/devices/*.ufs/flags/device_init
744
Date: February 2018
745
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
746
Description: This file shows the device init status. The full information
747
about the flag could be found at UFS specifications 2.1.
749
The file is read only.
751
What: /sys/bus/platform/drivers/ufshcd/*/flags/permanent_wpe
752
What: /sys/bus/platform/devices/*.ufs/flags/permanent_wpe
753
Date: February 2018
754
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
755
Description: This file shows whether permanent write protection is enabled.
756
The full information about the flag could be found at
757
UFS specifications 2.1.
759
The file is read only.
761
What: /sys/bus/platform/drivers/ufshcd/*/flags/power_on_wpe
762
What: /sys/bus/platform/devices/*.ufs/flags/power_on_wpe
763
Date: February 2018
764
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
765
Description: This file shows whether write protection is enabled on all
766
logical units configured as power on write protected. The
767
full information about the flag could be found at
768
UFS specifications 2.1.
770
The file is read only.
772
What: /sys/bus/platform/drivers/ufshcd/*/flags/bkops_enable
773
What: /sys/bus/platform/devices/*.ufs/flags/bkops_enable
774
Date: February 2018
775
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
776
Description: This file shows whether the device background operations are
777
enabled. The full information about the flag could be
778
found at UFS specifications 2.1.
780
The file is read only.
782
What: /sys/bus/platform/drivers/ufshcd/*/flags/life_span_mode_enable
783
What: /sys/bus/platform/devices/*.ufs/flags/life_span_mode_enable
784
Date: February 2018
785
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
786
Description: This file shows whether the device life span mode is enabled.
787
The full information about the flag could be found at
788
UFS specifications 2.1.
790
The file is read only.
792
What: /sys/bus/platform/drivers/ufshcd/*/flags/phy_resource_removal
793
What: /sys/bus/platform/devices/*.ufs/flags/phy_resource_removal
794
Date: February 2018
795
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
796
Description: This file shows whether physical resource removal is enable.
797
The full information about the flag could be found at
798
UFS specifications 2.1.
800
The file is read only.
802
What: /sys/bus/platform/drivers/ufshcd/*/flags/busy_rtc
803
What: /sys/bus/platform/devices/*.ufs/flags/busy_rtc
804
Date: February 2018
805
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
806
Description: This file shows whether the device is executing internal
807
operation related to real time clock. The full information
808
about the flag could be found at UFS specifications 2.1.
810
The file is read only.
812
What: /sys/bus/platform/drivers/ufshcd/*/flags/disable_fw_update
813
What: /sys/bus/platform/devices/*.ufs/flags/disable_fw_update
814
Date: February 2018
815
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
816
Description: This file shows whether the device FW update is permanently
817
disabled. The full information about the flag could be found
818
at UFS specifications 2.1.
820
The file is read only.
823
What: /sys/bus/platform/drivers/ufshcd/*/attributes/boot_lun_enabled
824
What: /sys/bus/platform/devices/*.ufs/attributes/boot_lun_enabled
825
Date: February 2018
826
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
827
Description: This file provides the boot lun enabled UFS device attribute.
828
The full information about the attribute could be found at
829
UFS specifications 2.1.
831
The file is read only.
833
What: /sys/bus/platform/drivers/ufshcd/*/attributes/current_power_mode
834
What: /sys/bus/platform/devices/*.ufs/attributes/current_power_mode
835
Date: February 2018
836
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
837
Description: This file provides the current power mode UFS device attribute.
838
The full information about the attribute could be found at
839
UFS specifications 2.1.
841
The file is read only.
843
What: /sys/bus/platform/drivers/ufshcd/*/attributes/active_icc_level
844
What: /sys/bus/platform/devices/*.ufs/attributes/active_icc_level
845
Date: February 2018
846
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
847
Description: This file provides the active icc level UFS device attribute.
848
The full information about the attribute could be found at
849
UFS specifications 2.1.
851
The file is read only.
853
What: /sys/bus/platform/drivers/ufshcd/*/attributes/ooo_data_enabled
854
What: /sys/bus/platform/devices/*.ufs/attributes/ooo_data_enabled
855
Date: February 2018
856
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
857
Description: This file provides the out of order data transfer enabled UFS
858
device attribute. The full information about the attribute
859
could be found at UFS specifications 2.1.
861
The file is read only.
863
What: /sys/bus/platform/drivers/ufshcd/*/attributes/bkops_status
864
What: /sys/bus/platform/devices/*.ufs/attributes/bkops_status
865
Date: February 2018
866
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
867
Description: This file provides the background operations status UFS device
868
attribute. The full information about the attribute could
869
be found at UFS specifications 2.1.
871
The file is read only.
873
What: /sys/bus/platform/drivers/ufshcd/*/attributes/purge_status
874
What: /sys/bus/platform/devices/*.ufs/attributes/purge_status
875
Date: February 2018
876
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
877
Description: This file provides the purge operation status UFS device
878
attribute. The full information about the attribute could
879
be found at UFS specifications 2.1.
881
The file is read only.
883
What: /sys/bus/platform/drivers/ufshcd/*/attributes/max_data_in_size
884
What: /sys/bus/platform/devices/*.ufs/attributes/max_data_in_size
885
Date: February 2018
886
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
887
Description: This file shows the maximum data size in a DATA IN
888
UPIU. The full information about the attribute could
889
be found at UFS specifications 2.1.
891
The file is read only.
893
What: /sys/bus/platform/drivers/ufshcd/*/attributes/max_data_out_size
894
What: /sys/bus/platform/devices/*.ufs/attributes/max_data_out_size
895
Date: February 2018
896
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
897
Description: This file shows the maximum number of bytes that can be
898
requested with a READY TO TRANSFER UPIU. The full information
899
about the attribute could be found at UFS specifications 2.1.
901
The file is read only.
903
What: /sys/bus/platform/drivers/ufshcd/*/attributes/reference_clock_frequency
904
What: /sys/bus/platform/devices/*.ufs/attributes/reference_clock_frequency
905
Date: February 2018
906
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
907
Description: This file provides the reference clock frequency UFS device
908
attribute. The full information about the attribute could
909
be found at UFS specifications 2.1.
911
The file is read only.
913
What: /sys/bus/platform/drivers/ufshcd/*/attributes/configuration_descriptor_lock
914
What: /sys/bus/platform/devices/*.ufs/attributes/configuration_descriptor_lock
915
Date: February 2018
916
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
917
Description: This file shows whether the configuration descriptor is locked.
918
The full information about the attribute could be found at
919
UFS specifications 2.1. The file is read only.
921
What: /sys/bus/platform/drivers/ufshcd/*/attributes/max_number_of_rtt
922
What: /sys/bus/platform/devices/*.ufs/attributes/max_number_of_rtt
923
Date: May 2024
924
Contact: Avri Altman <avri.altman@wdc.com>
925
Description: This file provides the maximum current number of
926
outstanding RTTs in device that is allowed. bMaxNumOfRTT is a
927
read-write persistent attribute and is equal to two after device
928
manufacturing. It shall not be set to a value greater than
929
bDeviceRTTCap value, and it may be set only when the hw queues are
930
empty.
932
The file is read write.
934
What: /sys/bus/platform/drivers/ufshcd/*/attributes/exception_event_control
935
What: /sys/bus/platform/devices/*.ufs/attributes/exception_event_control
936
Date: February 2018
937
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
938
Description: This file provides the exception event control UFS device
939
attribute. The full information about the attribute could
940
be found at UFS specifications 2.1.
942
The file is read only.
944
What: /sys/bus/platform/drivers/ufshcd/*/attributes/exception_event_status
945
What: /sys/bus/platform/devices/*.ufs/attributes/exception_event_status
946
Date: February 2018
947
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
948
Description: This file provides the exception event status UFS device
949
attribute. The full information about the attribute could
950
be found at UFS specifications 2.1.
952
The file is read only.
954
What: /sys/bus/platform/drivers/ufshcd/*/attributes/ffu_status
955
What: /sys/bus/platform/devices/*.ufs/attributes/ffu_status
956
Date: February 2018
957
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
958
Description: This file provides the ffu status UFS device attribute.
959
The full information about the attribute could be found at
960
UFS specifications 2.1.
962
The file is read only.
964
What: /sys/bus/platform/drivers/ufshcd/*/attributes/psa_state
965
What: /sys/bus/platform/devices/*.ufs/attributes/psa_state
966
Date: February 2018
967
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
968
Description: This file show the PSA feature status. The full information
969
about the attribute could be found at UFS specifications 2.1.
971
The file is read only.
973
What: /sys/bus/platform/drivers/ufshcd/*/attributes/psa_data_size
974
What: /sys/bus/platform/devices/*.ufs/attributes/psa_data_size
975
Date: February 2018
976
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
977
Description: This file shows the amount of data that the host plans to
978
load to all logical units in pre-soldering state.
979
The full information about the attribute could be found at
980
UFS specifications 2.1.
982
The file is read only.
985
What: /sys/class/scsi_device/*/device/dyn_cap_needed
986
Date: February 2018
987
Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
988
Description: This file shows the amount of physical memory needed
989
to be removed from the physical memory resources pool of
990
the particular logical unit. The full information about
991
the attribute could be found at UFS specifications 2.1.
993
The file is read only.
996
What: /sys/bus/platform/drivers/ufshcd/*/rpm_lvl
997
What: /sys/bus/platform/devices/*.ufs/rpm_lvl
998
Date: September 2014
999
Contact: Can Guo <quic_cang@quicinc.com>
1000
Description: This entry could be used to set or show the UFS device
1001
runtime power management level. The current driver
1002
implementation supports 7 levels with next target states:
1004
== ====================================================
1005
0 UFS device will stay active, UIC link will
1006
stay active
1007
1 UFS device will stay active, UIC link will
1008
hibernate
1009
2 UFS device will be moved to sleep, UIC link will
1010
stay active
1011
3 UFS device will be moved to sleep, UIC link will
1012
hibernate
1013
4 UFS device will be powered off, UIC link will
1014
hibernate
1015
5 UFS device will be powered off, UIC link will
1016
be powered off
1017
6 UFS device will be moved to deep sleep, UIC link
1018
will be powered off. Note, deep sleep might not be
1019
supported in which case this value will not be
1020
accepted
1021
== ====================================================
1023
What: /sys/bus/platform/drivers/ufshcd/*/rpm_target_dev_state
1024
What: /sys/bus/platform/devices/*.ufs/rpm_target_dev_state
1025
Date: February 2018
1026
Contact: Can Guo <quic_cang@quicinc.com>
1027
Description: This entry shows the target power mode of an UFS device
1028
for the chosen runtime power management level.
1030
The file is read only.
1032
What: /sys/bus/platform/drivers/ufshcd/*/rpm_target_link_state
1033
What: /sys/bus/platform/devices/*.ufs/rpm_target_link_state
1034
Date: February 2018
1035
Contact: Can Guo <quic_cang@quicinc.com>
1036
Description: This entry shows the target state of an UFS UIC link
1037
for the chosen runtime power management level.
1039
The file is read only.
1041
What: /sys/bus/platform/drivers/ufshcd/*/spm_lvl
1042
What: /sys/bus/platform/devices/*.ufs/spm_lvl
1043
Date: September 2014
1044
Contact: Can Guo <quic_cang@quicinc.com>
1045
Description: This entry could be used to set or show the UFS device
1046
system power management level. The current driver
1047
implementation supports 7 levels with next target states:
1049
== ====================================================
1050
0 UFS device will stay active, UIC link will
1051
stay active
1052
1 UFS device will stay active, UIC link will
1053
hibernate
1054
2 UFS device will be moved to sleep, UIC link will
1055
stay active
1056
3 UFS device will be moved to sleep, UIC link will
1057
hibernate
1058
4 UFS device will be powered off, UIC link will
1059
hibernate
1060
5 UFS device will be powered off, UIC link will
1061
be powered off
1062
6 UFS device will be moved to deep sleep, UIC link
1063
will be powered off. Note, deep sleep might not be
1064
supported in which case this value will not be
1065
accepted
1066
== ====================================================
1068
What: /sys/bus/platform/drivers/ufshcd/*/spm_target_dev_state
1069
What: /sys/bus/platform/devices/*.ufs/spm_target_dev_state
1070
Date: February 2018
1071
Contact: Can Guo <quic_cang@quicinc.com>
1072
Description: This entry shows the target power mode of an UFS device
1073
for the chosen system power management level.
1075
The file is read only.
1077
What: /sys/bus/platform/drivers/ufshcd/*/spm_target_link_state
1078
What: /sys/bus/platform/devices/*.ufs/spm_target_link_state
1079
Date: February 2018
1080
Contact: Can Guo <quic_cang@quicinc.com>
1081
Description: This entry shows the target state of an UFS UIC link
1082
for the chosen system power management level.
1084
The file is read only.
1086
What: /sys/bus/platform/drivers/ufshcd/*/monitor/monitor_enable
1087
What: /sys/bus/platform/devices/*.ufs/monitor/monitor_enable
1088
Date: January 2021
1089
Contact: Can Guo <quic_cang@quicinc.com>
1090
Description: This file shows the status of performance monitor enablement
1091
and it can be used to start/stop the monitor. When the monitor
1092
is stopped, the performance data collected is also cleared.
1094
What: /sys/bus/platform/drivers/ufshcd/*/monitor/monitor_chunk_size
1095
What: /sys/bus/platform/devices/*.ufs/monitor/monitor_chunk_size
1096
Date: January 2021
1097
Contact: Can Guo <quic_cang@quicinc.com>
1098
Description: This file tells the monitor to focus on requests transferring
1099
data of specific chunk size (in Bytes). 0 means any chunk size.
1100
It can only be changed when monitor is disabled.
1102
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_total_sectors
1103
What: /sys/bus/platform/devices/*.ufs/monitor/read_total_sectors
1104
Date: January 2021
1105
Contact: Can Guo <quic_cang@quicinc.com>
1106
Description: This file shows how many sectors (in 512 Bytes) have been
1107
sent from device to host after monitor gets started.
1109
The file is read only.
1111
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_total_busy
1112
What: /sys/bus/platform/devices/*.ufs/monitor/read_total_busy
1113
Date: January 2021
1114
Contact: Can Guo <quic_cang@quicinc.com>
1115
Description: This file shows how long (in micro seconds) has been spent
1116
sending data from device to host after monitor gets started.
1118
The file is read only.
1120
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_nr_requests
1121
What: /sys/bus/platform/devices/*.ufs/monitor/read_nr_requests
1122
Date: January 2021
1123
Contact: Can Guo <quic_cang@quicinc.com>
1124
Description: This file shows how many read requests have been sent after
1125
monitor gets started.
1127
The file is read only.
1129
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_max
1130
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_max
1131
Date: January 2021
1132
Contact: Can Guo <quic_cang@quicinc.com>
1133
Description: This file shows the maximum latency (in micro seconds) of
1134
read requests after monitor gets started.
1136
The file is read only.
1138
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_min
1139
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_min
1140
Date: January 2021
1141
Contact: Can Guo <quic_cang@quicinc.com>
1142
Description: This file shows the minimum latency (in micro seconds) of
1143
read requests after monitor gets started.
1145
The file is read only.
1147
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_avg
1148
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_avg
1149
Date: January 2021
1150
Contact: Can Guo <quic_cang@quicinc.com>
1151
Description: This file shows the average latency (in micro seconds) of
1152
read requests after monitor gets started.
1154
The file is read only.
1156
What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_sum
1157
What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_sum
1158
Date: January 2021
1159
Contact: Can Guo <quic_cang@quicinc.com>
1160
Description: This file shows the total latency (in micro seconds) of
1161
read requests sent after monitor gets started.
1163
The file is read only.
1165
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_total_sectors
1166
What: /sys/bus/platform/devices/*.ufs/monitor/write_total_sectors
1167
Date: January 2021
1168
Contact: Can Guo <quic_cang@quicinc.com>
1169
Description: This file shows how many sectors (in 512 Bytes) have been sent
1170
from host to device after monitor gets started.
1172
The file is read only.
1174
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_total_busy
1175
What: /sys/bus/platform/devices/*.ufs/monitor/write_total_busy
1176
Date: January 2021
1177
Contact: Can Guo <quic_cang@quicinc.com>
1178
Description: This file shows how long (in micro seconds) has been spent
1179
sending data from host to device after monitor gets started.
1181
The file is read only.
1183
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_nr_requests
1184
What: /sys/bus/platform/devices/*.ufs/monitor/write_nr_requests
1185
Date: January 2021
1186
Contact: Can Guo <quic_cang@quicinc.com>
1187
Description: This file shows how many write requests have been sent after
1188
monitor gets started.
1190
The file is read only.
1192
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_max
1193
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_max
1194
Date: January 2021
1195
Contact: Can Guo <quic_cang@quicinc.com>
1196
Description: This file shows the maximum latency (in micro seconds) of write
1197
requests after monitor gets started.
1199
The file is read only.
1201
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_min
1202
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_min
1203
Date: January 2021
1204
Contact: Can Guo <quic_cang@quicinc.com>
1205
Description: This file shows the minimum latency (in micro seconds) of write
1206
requests after monitor gets started.
1208
The file is read only.
1210
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_avg
1211
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_avg
1212
Date: January 2021
1213
Contact: Can Guo <quic_cang@quicinc.com>
1214
Description: This file shows the average latency (in micro seconds) of write
1215
requests after monitor gets started.
1217
The file is read only.
1219
What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_sum
1220
What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_sum
1221
Date: January 2021
1222
Contact: Can Guo <quic_cang@quicinc.com>
1223
Description: This file shows the total latency (in micro seconds) of write
1224
requests after monitor gets started.
1226
The file is read only.
1228
What: /sys/bus/platform/drivers/ufshcd/*/power_info/lane
1229
What: /sys/bus/platform/devices/*.ufs/power_info/lane
1230
Date: September 2023
1231
Contact: Can Guo <quic_cang@quicinc.com>
1232
Description: This file shows how many lanes are enabled on the UFS link,
1233
i.e., an output 2 means UFS link is operating with 2 lanes.
1235
The file is read only.
1237
What: /sys/bus/platform/drivers/ufshcd/*/power_info/mode
1238
What: /sys/bus/platform/devices/*.ufs/power_info/mode
1239
Date: September 2023
1240
Contact: Can Guo <quic_cang@quicinc.com>
1241
Description: This file shows the PA power mode of UFS.
1243
The file is read only.
1245
What: /sys/bus/platform/drivers/ufshcd/*/power_info/rate
1246
What: /sys/bus/platform/devices/*.ufs/power_info/rate
1247
Date: September 2023
1248
Contact: Can Guo <quic_cang@quicinc.com>
1249
Description: This file shows the speed rate of UFS link.
1251
The file is read only.
1253
What: /sys/bus/platform/drivers/ufshcd/*/power_info/gear
1254
What: /sys/bus/platform/devices/*.ufs/power_info/gear
1255
Date: September 2023
1256
Contact: Can Guo <quic_cang@quicinc.com>
1257
Description: This file shows the gear of UFS link.
1259
The file is read only.
1261
What: /sys/bus/platform/drivers/ufshcd/*/power_info/dev_pm
1262
What: /sys/bus/platform/devices/*.ufs/power_info/dev_pm
1263
Date: September 2023
1264
Contact: Can Guo <quic_cang@quicinc.com>
1265
Description: This file shows the UFS device power mode.
1267
The file is read only.
1269
What: /sys/bus/platform/drivers/ufshcd/*/power_info/link_state
1270
What: /sys/bus/platform/devices/*.ufs/power_info/link_state
1271
Date: September 2023
1272
Contact: Can Guo <quic_cang@quicinc.com>
1273
Description: This file shows the state of UFS link.
1275
The file is read only.
1277
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_presv_us_en
1278
What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_presv_us_en
1279
Date: June 2020
1280
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1281
Description: This entry shows if preserve user-space was configured
1283
The file is read only.
1285
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_shared_alloc_units
1286
What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_shared_alloc_units
1287
Date: June 2020
1288
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1289
Description: This entry shows the shared allocated units of WB buffer
1291
The file is read only.
1293
What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_type
1294
What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_type
1295
Date: June 2020
1296
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1297
Description: This entry shows the configured WB type.
1298
0x1 for shared buffer mode. 0x0 for dedicated buffer mode.
1300
The file is read only.
1302
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_buff_cap_adj
1303
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_buff_cap_adj
1304
Date: June 2020
1305
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1306
Description: This entry shows the total user-space decrease in shared
1307
buffer mode.
1308
The value of this parameter is 3 for TLC NAND when SLC mode
1309
is used as WriteBooster Buffer. 2 for MLC NAND.
1311
The file is read only.
1313
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_max_alloc_units
1314
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_max_alloc_units
1315
Date: June 2020
1316
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1317
Description: This entry shows the Maximum total WriteBooster Buffer size
1318
which is supported by the entire device.
1320
The file is read only.
1322
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_max_wb_luns
1323
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_max_wb_luns
1324
Date: June 2020
1325
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1326
Description: This entry shows the maximum number of luns that can support
1327
WriteBooster.
1329
The file is read only.
1331
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_sup_red_type
1332
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_sup_red_type
1333
Date: June 2020
1334
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1335
Description: The supportability of user space reduction mode
1336
and preserve user space mode.
1337
00h: WriteBooster Buffer can be configured only in
1338
user space reduction type.
1339
01h: WriteBooster Buffer can be configured only in
1340
preserve user space type.
1341
02h: Device can be configured in either user space
1342
reduction type or preserve user space type.
1344
The file is read only.
1346
What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_sup_wb_type
1347
What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_sup_wb_type
1348
Date: June 2020
1349
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1350
Description: The supportability of WriteBooster Buffer type.
1352
=== ==========================================================
1353
00h LU based WriteBooster Buffer configuration
1354
01h Single shared WriteBooster Buffer configuration
1355
02h Supporting both LU based WriteBooster.
1356
Buffer and Single shared WriteBooster Buffer configuration
1357
=== ==========================================================
1359
The file is read only.
1361
What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_enable
1362
What: /sys/bus/platform/devices/*.ufs/flags/wb_enable
1363
Date: June 2020
1364
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1365
Description: This entry shows the status of WriteBooster.
1367
== ============================
1368
0 WriteBooster is not enabled.
1369
1 WriteBooster is enabled
1370
== ============================
1372
The file is read only.
1374
What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_flush_en
1375
What: /sys/bus/platform/devices/*.ufs/flags/wb_flush_en
1376
Date: June 2020
1377
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1378
Description: This entry shows if flush is enabled.
1380
== =================================
1381
0 Flush operation is not performed.
1382
1 Flush operation is performed.
1383
== =================================
1385
The file is read only.
1387
What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_flush_during_h8
1388
What: /sys/bus/platform/devices/*.ufs/flags/wb_flush_during_h8
1389
Date: June 2020
1390
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1391
Description: Flush WriteBooster Buffer during hibernate state.
1393
== =================================================
1394
0 Device is not allowed to flush the
1395
WriteBooster Buffer during link hibernate state.
1396
1 Device is allowed to flush the
1397
WriteBooster Buffer during link hibernate state.
1398
== =================================================
1400
The file is read only.
1402
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_avail_buf
1403
What: /sys/bus/platform/devices/*.ufs/attributes/wb_avail_buf
1404
Date: June 2020
1405
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1406
Description: This entry shows the amount of unused WriteBooster buffer
1407
available.
1409
The file is read only.
1411
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_cur_buf
1412
What: /sys/bus/platform/devices/*.ufs/attributes/wb_cur_buf
1413
Date: June 2020
1414
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1415
Description: This entry shows the amount of unused current buffer.
1417
The file is read only.
1419
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_flush_status
1420
What: /sys/bus/platform/devices/*.ufs/attributes/wb_flush_status
1421
Date: June 2020
1422
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1423
Description: This entry shows the flush operation status.
1426
=== ======================================
1427
00h idle
1428
01h Flush operation in progress
1429
02h Flush operation stopped prematurely.
1430
03h Flush operation completed successfully
1431
04h Flush operation general failure
1432
=== ======================================
1434
The file is read only.
1436
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_life_time_est
1437
What: /sys/bus/platform/devices/*.ufs/attributes/wb_life_time_est
1438
Date: June 2020
1439
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1440
Description: This entry shows an indication of the WriteBooster Buffer
1441
lifetime based on the amount of performed program/erase cycles
1443
=== =============================================
1444
01h 0% - 10% WriteBooster Buffer life time used
1445
...
1446
0Ah 90% - 100% WriteBooster Buffer life time used
1447
=== =============================================
1449
The file is read only.
1451
What: /sys/class/scsi_device/*/device/unit_descriptor/wb_buf_alloc_units
1452
Date: June 2020
1453
Contact: Asutosh Das <quic_asutoshd@quicinc.com>
1454
Description: This entry shows the configured size of WriteBooster buffer.
1455
0400h corresponds to 4GB.
1457
The file is read only.
1459
What: /sys/bus/platform/drivers/ufshcd/*/wb_on
1460
What: /sys/bus/platform/devices/*.ufs/wb_on
1461
Date: January 2021
1462
Contact: Bean Huo <beanhuo@micron.com>
1463
Description: This node is used to set or display whether UFS WriteBooster is
1464
enabled. Echo 0 to this file to disable UFS WriteBooster or 1 to
1465
enable it. The WriteBooster is enabled after power-on/reset,
1466
however, it will be disabled/enable while CLK scaling down/up
1467
(if the platform supports UFSHCD_CAP_CLK_SCALING). For a
1468
platform that doesn't support UFSHCD_CAP_CLK_SCALING, we can
1469
disable/enable WriteBooster through this sysfs node.
1471
What: /sys/bus/platform/drivers/ufshcd/*/enable_wb_buf_flush
1472
What: /sys/bus/platform/devices/*.ufs/enable_wb_buf_flush
1473
Date: July 2022
1474
Contact: Jinyoung Choi <j-young.choi@samsung.com>
1475
Description: This entry shows the status of WriteBooster buffer flushing
1476
and it can be used to enable or disable the flushing.
1477
If flushing is enabled, the device executes the flush
1478
operation when the command queue is empty.
1480
What: /sys/bus/platform/drivers/ufshcd/*/wb_flush_threshold
1481
What: /sys/bus/platform/devices/*.ufs/wb_flush_threshold
1482
Date: June 2023
1483
Contact: Lu Hongfei <luhongfei@vivo.com>
1484
Description:
1485
wb_flush_threshold represents the threshold for flushing WriteBooster buffer,
1486
whose value expressed in unit of 10% granularity, such as '1' representing 10%,
1487
'2' representing 20%, and so on.
1488
If avail_wb_buff < wb_flush_threshold, it indicates that WriteBooster buffer needs to
1489
be flushed, otherwise it is not necessary.
1491
Contact: Daniil Lunev <dlunev@chromium.org>
1492
What: /sys/bus/platform/drivers/ufshcd/*/capabilities/
1493
What: /sys/bus/platform/devices/*.ufs/capabilities/
1494
Date: August 2022
1495
Description: The group represents the effective capabilities of the
1496
host-device pair. i.e. the capabilities which are enabled in the
1497
driver for the specific host controller, supported by the host
1498
controller and are supported and/or have compatible
1499
configuration on the device side.
1501
Contact: Daniil Lunev <dlunev@chromium.org>
1502
What: /sys/bus/platform/drivers/ufshcd/*/capabilities/clock_scaling
1503
What: /sys/bus/platform/devices/*.ufs/capabilities/clock_scaling
1504
Date: August 2022
1505
Contact: Daniil Lunev <dlunev@chromium.org>
1506
Description: Indicates status of clock scaling.
1508
== ============================
1509
0 Clock scaling is not supported.
1510
1 Clock scaling is supported.
1511
== ============================
1513
The file is read only.
1515
What: /sys/bus/platform/drivers/ufshcd/*/capabilities/write_booster
1516
What: /sys/bus/platform/devices/*.ufs/capabilities/write_booster
1517
Date: August 2022
1518
Contact: Daniil Lunev <dlunev@chromium.org>
1519
Description: Indicates status of Write Booster.
1521
== ============================
1522
0 Write Booster can not be enabled.
1523
1 Write Booster can be enabled.
1524
== ============================
1526
The file is read only.
1528
What: /sys/bus/platform/drivers/ufshcd/*/rtc_update_ms
1529
What: /sys/bus/platform/devices/*.ufs/rtc_update_ms
1530
Date: November 2023
1531
Contact: Bean Huo <beanhuo@micron.com>
1532
Description:
1533
rtc_update_ms indicates how often the host should synchronize or update the
1534
UFS RTC. If set to 0, this will disable UFS RTC periodic update.
1536
What: /sys/devices/platform/.../ufshci_capabilities/version
1537
Date: August 2024
1538
Contact: Avri Altman <avri.altman@wdc.com>
1539
Description:
1540
Host Capabilities register group: UFS version register.
1541
Symbol - VER. This file shows the UFSHCD version.
1542
Example: Version 3.12 would be represented as 0000_0312h.
1543
The file is read only.
1545
What: /sys/devices/platform/.../ufshci_capabilities/product_id
1546
Date: August 2024
1547
Contact: Avri Altman <avri.altman@wdc.com>
1548
Description:
1549
Host Capabilities register group: product ID register.
1550
Symbol - HCPID. This file shows the UFSHCD product id.
1551
The content of this register is vendor specific.
1552
The file is read only.
1554
What: /sys/devices/platform/.../ufshci_capabilities/man_id
1555
Date: August 2024
1556
Contact: Avri Altman <avri.altman@wdc.com>
1557
Description:
1558
Host Capabilities register group: manufacturer ID register.
1559
Symbol - HCMID. This file shows the UFSHCD manufacturer id.
1560
The Manufacturer ID is defined by JEDEC in JEDEC-JEP106.
1561
The file is read only.
1563
What: /sys/bus/platform/drivers/ufshcd/*/critical_health
1564
What: /sys/bus/platform/devices/*.ufs/critical_health
1565
Date: February 2025
1566
Contact: Avri Altman <avri.altman@wdc.com>
1567
Description: Report the number of times a critical health event has been
1568
reported by a UFS device. Further insight into the specific
1569
issue can be gained by reading one of: bPreEOLInfo,
1570
bDeviceLifeTimeEstA, bDeviceLifeTimeEstB,
1571
bWriteBoosterBufferLifeTimeEst, and bRPMBLifeTimeEst.
1573
The file is read only.
1575
What: /sys/bus/platform/drivers/ufshcd/*/clkscale_enable
1576
What: /sys/bus/platform/devices/*.ufs/clkscale_enable
1577
Date: January 2025
1578
Contact: Ziqi Chen <quic_ziqichen@quicinc.com>
1579
Description:
1580
This attribute shows whether the UFS clock scaling is enabled or not.
1581
And it can be used to enable/disable the clock scaling by writing
1582
1 or 0 to this attribute.
1584
The attribute is read/write.
1586
What: /sys/bus/platform/drivers/ufshcd/*/clkgate_enable
1587
What: /sys/bus/platform/devices/*.ufs/clkgate_enable
1588
Date: January 2025
1589
Contact: Ziqi Chen <quic_ziqichen@quicinc.com>
1590
Description:
1591
This attribute shows whether the UFS clock gating is enabled or not.
1592
And it can be used to enable/disable the clock gating by writing
1593
1 or 0 to this attribute.
1595
The attribute is read/write.
1597
What: /sys/bus/platform/drivers/ufshcd/*/clkgate_delay_ms
1598
What: /sys/bus/platform/devices/*.ufs/clkgate_delay_ms
1599
Date: January 2025
1600
Contact: Ziqi Chen <quic_ziqichen@quicinc.com>
1601
Description:
1602
This attribute shows and sets the number of milliseconds of idle time
1603
before the UFS driver starts to perform clock gating. This can
1604
prevent the UFS from frequently performing clock gating/ungating.
1606
The attribute is read/write.
1608
What: /sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_count
1609
What: /sys/bus/platform/devices/*.ufs/device_lvl_exception_count
1610
Date: March 2025
1611
Contact: Bao D. Nguyen <quic_nguyenb@quicinc.com>
1612
Description:
1613
This attribute is applicable to ufs devices compliant to the
1614
JEDEC specifications version 4.1 or later. The
1615
device_lvl_exception_count is a counter indicating the number of
1616
times the device level exceptions have occurred since the last
1617
time this variable is reset. Writing a 0 value to this
1618
attribute will reset the device_lvl_exception_count. If the
1619
device_lvl_exception_count reads a positive value, the user
1620
application should read the device_lvl_exception_id attribute to
1621
know more information about the exception.
1623
The attribute is read/write.
1625
What: /sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_id
1626
What: /sys/bus/platform/devices/*.ufs/device_lvl_exception_id
1627
Date: March 2025
1628
Contact: Bao D. Nguyen <quic_nguyenb@quicinc.com>
1629
Description:
1630
Reading the device_lvl_exception_id returns the
1631
qDeviceLevelExceptionID attribute of the ufs device JEDEC
1632
specification version 4.1. The definition of the
1633
qDeviceLevelExceptionID is the ufs device vendor specific
1634
implementation. Refer to the device manufacturer datasheet for
1635
more information on the meaning of the qDeviceLevelExceptionID
1636
attribute value.
1638
The attribute is read only.
1640
What: /sys/bus/platform/drivers/ufshcd/*/wb_resize_enable
1641
What: /sys/bus/platform/devices/*.ufs/wb_resize_enable
1642
Date: April 2025
1643
Contact: Huan Tang <tanghuan@vivo.com>
1644
Description:
1645
The host can enable the WriteBooster buffer resize by setting this
1646
attribute.
1648
======== ======================================
1649
idle There is no resize operation
1650
decrease Decrease WriteBooster buffer size
1651
increase Increase WriteBooster buffer size
1652
======== ======================================
1654
The file is write only.
1656
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_resize_hint
1657
What: /sys/bus/platform/devices/*.ufs/attributes/wb_resize_hint
1658
Date: April 2025
1659
Contact: Huan Tang <tanghuan@vivo.com>
1660
Description:
1661
wb_resize_hint indicates hint information about which type of resize
1662
for WriteBooster buffer is recommended by the device.
1664
========= ======================================
1665
keep Recommend keep the buffer size
1666
decrease Recommend to decrease the buffer size
1667
increase Recommend to increase the buffer size
1668
========= ======================================
1670
The file is read only.
1672
What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_resize_status
1673
What: /sys/bus/platform/devices/*.ufs/attributes/wb_resize_status
1674
Date: April 2025
1675
Contact: Huan Tang <tanghuan@vivo.com>
1676
Description:
1677
The host can check the resize operation status of the WriteBooster
1678
buffer by reading this attribute.
1680
================ ========================================
1681
idle Resize operation is not issued
1682
in_progress Resize operation in progress
1683
complete_success Resize operation completed successfully
1684
general_failure Resize operation general failure
1685
================ ========================================
1687
The file is read only.
1689
What: /sys/bus/platform/drivers/ufshcd/*/hid/analysis_trigger
1690
What: /sys/bus/platform/devices/*.ufs/hid/analysis_trigger
1691
Date: May 2025
1692
Contact: Huan Tang <tanghuan@vivo.com>
1693
Description:
1694
The host can enable or disable HID analysis operation.
1696
======= =========================================
1697
disable disable HID analysis operation
1698
enable enable HID analysis operation
1699
======= =========================================
1701
The file is write only.
1703
What: /sys/bus/platform/drivers/ufshcd/*/hid/defrag_trigger
1704
What: /sys/bus/platform/devices/*.ufs/hid/defrag_trigger
1705
Date: May 2025
1706
Contact: Huan Tang <tanghuan@vivo.com>
1707
Description:
1708
The host can enable or disable HID defragmentation operation.
1710
======= =========================================
1711
disable disable HID defragmentation operation
1712
enable enable HID defragmentation operation
1713
======= =========================================
1715
The attribute is write only.
1717
What: /sys/bus/platform/drivers/ufshcd/*/hid/fragmented_size
1718
What: /sys/bus/platform/devices/*.ufs/hid/fragmented_size
1719
Date: May 2025
1720
Contact: Huan Tang <tanghuan@vivo.com>
1721
Description:
1722
The total fragmented size in the device is reported through
1723
this attribute.
1725
The attribute is read only.
1727
What: /sys/bus/platform/drivers/ufshcd/*/hid/defrag_size
1728
What: /sys/bus/platform/devices/*.ufs/hid/defrag_size
1729
Date: May 2025
1730
Contact: Huan Tang <tanghuan@vivo.com>
1731
Description:
1732
The host sets the size to be defragmented by an HID
1733
defragmentation operation.
1735
The attribute is read/write.
1737
What: /sys/bus/platform/drivers/ufshcd/*/hid/progress_ratio
1738
What: /sys/bus/platform/devices/*.ufs/hid/progress_ratio
1739
Date: May 2025
1740
Contact: Huan Tang <tanghuan@vivo.com>
1741
Description:
1742
Defragmentation progress is reported by this attribute,
1743
indicates the ratio of the completed defragmentation size
1744
over the requested defragmentation size.
1746
==== ============================================
1747
1 1%
1748
...
1749
100 100%
1750
==== ============================================
1752
The attribute is read only.
1754
What: /sys/bus/platform/drivers/ufshcd/*/hid/state
1755
What: /sys/bus/platform/devices/*.ufs/hid/state
1756
Date: May 2025
1757
Contact: Huan Tang <tanghuan@vivo.com>
1758
Description:
1759
The HID state is reported by this attribute.
1761
==================== ===========================
1762
idle Idle (analysis required)
1763
analysis_in_progress Analysis in progress
1764
defrag_required Defrag required
1765
defrag_in_progress Defrag in progress
1766
defrag_completed Defrag completed
1767
defrag_not_required Defrag is not required
1768
==================== ===========================
1770
The attribute is read only.
3. 한국어 전문 번역
영어 원문의 문단 순서와 의미를 유지한 전체 번역입니다. 코드, 함수명, symbol과 URL은 원문 표기를 유지합니다.
UFS automatic hibernate idle timer
1-14| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/*/drivers/ufshcd/*/auto_hibern8 |
| Date | 2018년 3월 |
| Contact | linux-scsi@vger.kernel.org |
| Description | UFS host controller의 auto-hibernate idle timer setting입니다. 값 0은 auto-hibernate가 enabled되지 않았음을 뜻합니다. 0이 아니면 UFS host controller가 link를 자율적으로 hibernate state에 넣기 전까지의 idle time을 microseconds 단위로 나타냅니다. 이 동작은 latency 증가를 대가로 power를 절약합니다. Hardware는 power-of-ten multiplier를 가진 10-bit values를 지원하므로 maximum value는 102300000입니다. 자세한 내용은 UFS Host Controller Interface specification을 참조하십시오. |
| Access | Read-write |
| Unit | Microseconds |
| Maximum | 102300000 |
Write 0 to disable auto-hibernate→Or set idle time in microseconds→Controller observes link idle duration→At timer expiry, controller puts link into hibernate→Save power at the cost of increased latency
Idle timer가 link hibernate와 power/latency tradeoff를 결정합니다.
UFS device type
15-24| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_type |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/device_type |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device type을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
GroupRepresentative attributes
Identitydevice_type, device_class, device_sub_class, protocol
Logical unitsnumber_of_luns, number_of_wluns, high_priority_lun
Boot and powerboot_enable, descriptor_access_enable, initial_power_mode
Security and maintenancesecure_removal_type, support_security_lun, ffu_timeout
Versions and capabilitiesspecification_version, device_version, ufs_features
첫 descriptor chunk가 다루는 identity, topology, boot, security, capability fields입니다.
UFS device class
25-34| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_class |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/device_class |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device class를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS storage subclass
35-44| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_sub_class |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/device_sub_class |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | UFS storage subclass를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS device protocol
45-55| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/protocol |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/protocol |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | UFS device가 지원하는 protocol을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Number of UFS logical units
56-65| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_luns |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/number_of_luns |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Logical units의 수를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Number of well-known logical units
66-76| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_wluns |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/number_of_wluns |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Well-known logical units의 수를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS boot enable state
77-87| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/boot_enable |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/boot_enable |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device가 boot용으로 enabled되어 있는지를 나타내는 값을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Descriptor access after partial initialization
88-99| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/descriptor_access_enable |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/descriptor_access_enable |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Boot sequence의 partial initialization phase 뒤에도 device descriptor를 읽을 수 있는지를 나타내는 값을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Initial UFS power mode
100-110| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/initial_power_mode |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/initial_power_mode |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device initialization 또는 hardware reset 뒤의 power mode를 정의하는 값을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
High-priority UFS LUN
111-120| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/high_priority_lun |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/high_priority_lun |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | High-priority LUN을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Secure-removal type
121-130| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/secure_removal_type |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/secure_removal_type |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Secure-removal type을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Security-LUN support
131-141| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/support_security_lun |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/support_security_lun |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Security LUN이 지원되는지를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Background-operation termination latency
142-152| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/bkops_termination_latency |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/bkops_termination_latency |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Background operations의 termination latency를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Initial active ICC level
153-162| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/initial_active_icc_level |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/initial_active_icc_level |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Initial active ICC level을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS specification version
163-172| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/specification_version |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/specification_version |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Specification version을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS manufacturing date
173-183| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/manufacturing_date |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/manufacturing_date |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Manufacturing date를 BCD format으로 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS manufacturer identifier
184-193| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/manufacturer_id |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/manufacturer_id |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Manufacturer ID를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Outstanding RTT capability
194-204| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/rtt_capability |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/rtt_capability |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device가 지원하는 outstanding RTTs의 maximum number를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Realtime-clock update method
205-215| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/rtc_update |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/rtc_update |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Realtime clock update의 frequency와 method를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Supported UFS features
216-226| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/ufs_features |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/ufs_features |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device가 지원하는 features를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS FFU timeout
227-236| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/ffu_timeout |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/ffu_timeout |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | FFU timeout을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS device queue depth
237-246| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/queue_depth |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/queue_depth |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device queue depth를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS device version
247-256| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_version |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/device_version |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device version을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Secure write-protect area count
257-267| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_secure_wpa |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/number_of_secure_wpa |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device가 지원하는 secure write-protect areas의 수를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
PSA pre-soldering maximum data size
268-279| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/psa_max_data_size |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/psa_max_data_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | PSA flow의 pre-soldering phase에서 쓸 수 있는 maximum data amount를 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
PSA state-change timeout
280-291| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/psa_state_timeout |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/psa_state_timeout |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | PSA state change를 위한 command maximum timeout을 표시합니다. UFS device descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
MIPI UniPro version
292-302| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/interconnect_descriptor/unipro_version |
| What | /sys/bus/platform/devices/*.ufs/interconnect_descriptor/unipro_version |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | MIPI UniPro version number를 BCD format으로 표시합니다. UFS interconnect descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
AttributeVersion reportedFormat
unipro_versionMIPI UniProBCD
mphy_versionMIPI M-PHYBCD
UniPro와 M-PHY version values는 모두 BCD format입니다.
MIPI M-PHY version
303-314| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/interconnect_descriptor/mphy_version |
| What | /sys/bus/platform/devices/*.ufs/interconnect_descriptor/mphy_version |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | MIPI M-PHY version number를 BCD format으로 표시합니다. UFS interconnect descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Raw UFS device capacity
315-326| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/raw_device_capacity |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/raw_device_capacity |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | User가 device logical units를 configure할 때 사용할 수 있는 total memory quantity를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
CategoryRepresentative attributes
Capacity and allocationraw_device_capacity, segment_size, allocation_unit_size
Block geometrymin_addressable_block_size, optimal_read_block_size, optimal_write_block_size
Buffers and RPMBmax_in_buffer_size, max_out_buffer_size, rpmb_rw_size
Policy and contextsdyn_capacity_resource_policy, data_ordering, max_number_of_contexts
Memory typesmemory_types, *_memory_max_alloc_units, *_memory_capacity_adjustment_factor
Geometry fields를 capacity, block, buffer, policy와 memory-type groups로 정리했습니다.
Maximum UFS logical-unit count
327-337| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_number_of_luns |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/max_number_of_luns |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | UFS device가 지원하는 logical units의 maximum number를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS segment size
338-347| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/segment_size |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/segment_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Segment size를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS allocation-unit size
348-357| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/allocation_unit_size |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/allocation_unit_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Allocation unit size를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Minimum addressable block size
358-368| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/min_addressable_block_size |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/min_addressable_block_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Minimum addressable block size를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Optimal read block size
369-379| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/optimal_read_block_size |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/optimal_read_block_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Optimal read block size를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Optimal write block size
380-390| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/optimal_write_block_size |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/optimal_write_block_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Optimal write block size를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Maximum data-in buffer size
391-401| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_in_buffer_size |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/max_in_buffer_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Maximum data-in buffer size를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Maximum data-out buffer size
402-412| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_out_buffer_size |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/max_out_buffer_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Maximum data-out buffer size를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
RPMB Security Protocol frame limit
413-423| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/rpmb_rw_size |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/rpmb_rw_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Security Protocol In/Out에서 허용되는 RPMB frames의 maximum number를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Dynamic-capacity resource policy
424-434| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/dyn_capacity_resource_policy |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/dyn_capacity_resource_policy |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Dynamic capacity resource policy를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Out-of-order data-transfer support
435-445| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/data_ordering |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/data_ordering |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Out-of-order data transfer support를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Maximum UFS context count
446-456| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_number_of_contexts |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/max_number_of_contexts |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device가 지원하는 available contexts의 maximum number를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
System data-tag unit size
457-466| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/sys_data_tag_unit_size |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/sys_data_tag_unit_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | System data-tag unit size를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
System data-tag resource size
467-478| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/sys_data_tag_resource_size |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/sys_data_tag_resource_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Tagging mechanism으로 system data를 처리하기 위해 device가 할당한 maximum storage-area size를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Supported secure-removal types
479-489| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/secure_removal_types |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/secure_removal_types |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | 지원되는 secure-removal types를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Supported UFS memory types
490-500| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/memory_types |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/memory_types |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | 지원되는 memory types를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Maximum allocation units by memory type
501-512| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/*_memory_max_alloc_units |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/*_memory_max_alloc_units |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | 서로 다른 memory types(system code, non-persistent, enhanced types 1~4)의 allocation units maximum number를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Capacity adjustment factor by memory type
513-525| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/*_memory_capacity_adjustment_factor |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/*_memory_capacity_adjustment_factor |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | 서로 다른 memory types(system code, non-persistent, enhanced types 1~4)의 memory-capacity adjustment factor를 표시합니다. UFS geometry descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS pre-end-of-life information
526-536| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/health_descriptor/eol_info |
| What | /sys/bus/platform/devices/*.ufs/health_descriptor/eol_info |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Pre-end-of-life information을 표시합니다. UFS health descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
AttributeHealth information
eol_infoPre-end-of-life status
life_time_estimation_aDevice lifetime, method A
life_time_estimation_bDevice lifetime, method B
End-of-life state와 두 device-lifetime estimation methods입니다.
UFS lifetime estimation method A
537-547| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/health_descriptor/life_time_estimation_a |
| What | /sys/bus/platform/devices/*.ufs/health_descriptor/life_time_estimation_a |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device lifetime indication(method A)을 표시합니다. UFS health descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS lifetime estimation method B
548-559| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/health_descriptor/life_time_estimation_b |
| What | /sys/bus/platform/devices/*.ufs/health_descriptor/life_time_estimation_b |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device lifetime indication(method B)을 표시합니다. UFS health descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Maximum active ICC supply values
560-571| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/power_descriptor/active_icc_levels_vcc* |
| What | /sys/bus/platform/devices/*.ufs/power_descriptor/active_icc_levels_vcc* |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Active ICC levels 0~15에 대한 maximum VCC, VCCQ, VCCQ2 values를 표시합니다. UFS power descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
ICC levelsSupply maxima
0..15VCC, VCCQ, VCCQ2
각 active ICC level에서 보고하는 세 supply maxima입니다.
UFS manufacturer-name string
572-581| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/string_descriptors/manufacturer_name |
| What | /sys/bus/platform/devices/*.ufs/string_descriptors/manufacturer_name |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device manufacturer-name string을 포함합니다. Descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
AttributeString content
manufacturer_nameDevice manufacturer name
product_nameProduct name
oem_idOEM ID
serial_numberDevice serial number
product_revisionProduct revision
Device identity와 revision을 제공하는 string fields입니다.
UFS product-name string
582-590| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/string_descriptors/product_name |
| What | /sys/bus/platform/devices/*.ufs/string_descriptors/product_name |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Product-name string을 포함합니다. Descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS OEM identifier string
591-599| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/string_descriptors/oem_id |
| What | /sys/bus/platform/devices/*.ufs/string_descriptors/oem_id |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | OEM ID string을 포함합니다. Descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS device serial-number string
600-609| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/string_descriptors/serial_number |
| What | /sys/bus/platform/devices/*.ufs/string_descriptors/serial_number |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device serial-number string을 포함합니다. Descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS product-revision string
610-620| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/string_descriptors/product_revision |
| What | /sys/bus/platform/devices/*.ufs/string_descriptors/product_revision |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Product-revision string을 포함합니다. Descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS unit boot LUN identifier
621-629| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/boot_lun_id |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Boot LUN 정보를 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Field groupAttributes
Boot and protectionboot_lun_id, lun_write_protect
Queue and PSAlun_queue_depth, psa_sensitive
Memory and reliabilitylun_memory_type, data_reliability
Logical-block layoutlogical_block_size, logical_block_count, erase_block_size
Provisioningprovisioning_type, physical_memory_resource_count
Context and granularitycontext_capabilities, large_unit_granularity
Logical unit의 부팅, 보호, queue, data layout, provisioning 정보를 구성하는 fields입니다.
UFS LUN write-protection status
630-638| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/lun_write_protect |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | LUN write-protection status를 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN queue depth
639-647| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/lun_queue_depth |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | LUN queue depth를 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN PSA sensitivity
648-656| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/psa_sensitive |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | LUN의 PSA sensitivity를 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN memory type
657-665| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/lun_memory_type |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | LUN memory type을 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN write data reliability
666-675| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/data_reliability |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Write operation 중 power failure가 발생했을 때 device의 동작을 정의합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN logical-block size
676-685| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/logical_block_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Addressable logical block size를 base 2의 exponent로 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN logical-block count
686-695| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/logical_block_count |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Addressable logical blocks의 total number를 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN erase-block size
696-704| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/erase_block_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Erase block size를 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN provisioning type
705-713| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/provisioning_type |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Thin-provisioning type을 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN physical-memory resource count
714-722| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/physical_memory_resource_count |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | LUN에 관련된 total physical-memory resources를 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN context capabilities
723-731| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/context_capabilities |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | LUN context capabilities를 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN large-unit granularity
732-741| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/large_unit_granularity |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | LUN granularity를 표시합니다. UFS unit descriptor parameters 중 하나이며 descriptor의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS device-initialization flag
742-750| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/device_init |
| What | /sys/bus/platform/devices/*.ufs/flags/device_init |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device initialization status를 표시합니다. flag의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
ConcernFlags
Initializationdevice_init
Write protectionpermanent_wpe, power_on_wpe
Background and lifetimebkops_enable, life_span_mode_enable
Resources and RTCphy_resource_removal, busy_rtc
Firmwaredisable_fw_update
Initialization, write protection, background work, lifetime, resource, RTC, firmware 상태를 나타냅니다.
UFS permanent write-protection flag
751-760| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/permanent_wpe |
| What | /sys/bus/platform/devices/*.ufs/flags/permanent_wpe |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Permanent write protection이 enabled되어 있는지 표시합니다. flag의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS power-on write-protection flag
761-771| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/power_on_wpe |
| What | /sys/bus/platform/devices/*.ufs/flags/power_on_wpe |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Power-on write-protected로 구성된 모든 logical units에서 write protection이 enabled되어 있는지 표시합니다. flag의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS background-operations flag
772-781| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/bkops_enable |
| What | /sys/bus/platform/devices/*.ufs/flags/bkops_enable |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device background operations가 enabled되어 있는지 표시합니다. flag의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS life-span mode flag
782-791| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/life_span_mode_enable |
| What | /sys/bus/platform/devices/*.ufs/flags/life_span_mode_enable |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device life-span mode가 enabled되어 있는지 표시합니다. flag의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS physical-resource-removal flag
792-801| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/phy_resource_removal |
| What | /sys/bus/platform/devices/*.ufs/flags/phy_resource_removal |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Physical-resource removal이 enabled되어 있는지 표시합니다. flag의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS real-time-clock operation flag
802-811| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/busy_rtc |
| What | /sys/bus/platform/devices/*.ufs/flags/busy_rtc |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device가 real-time clock과 관련된 internal operation을 실행 중인지 표시합니다. flag의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS firmware-update-disable flag
812-822| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/disable_fw_update |
| What | /sys/bus/platform/devices/*.ufs/flags/disable_fw_update |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Device firmware update가 permanently disabled되어 있는지 표시합니다. flag의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS enabled boot LUN
823-832| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/boot_lun_enabled |
| What | /sys/bus/platform/devices/*.ufs/attributes/boot_lun_enabled |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Enabled된 boot LUN을 나타내는 UFS device attribute를 제공합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Attribute groupMembers
Boot and powerboot_lun_enabled, current_power_mode, active_icc_level
Transfer and maintenanceooo_data_enabled, bkops_status, purge_status
Transfer limitsmax_data_in_size, max_data_out_size, max_number_of_rtt
Clock and configurationreference_clock_frequency, configuration_descriptor_lock
Events and firmwareexception_event_control, exception_event_status, ffu_status
PSApsa_state, psa_data_size
Power, transfer, event, firmware, PSA와 configuration 상태를 제공하는 attribute groups입니다.
UFS current power mode
833-842| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/current_power_mode |
| What | /sys/bus/platform/devices/*.ufs/attributes/current_power_mode |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Current power mode UFS device attribute를 제공합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS active ICC level
843-852| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/active_icc_level |
| What | /sys/bus/platform/devices/*.ufs/attributes/active_icc_level |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Active ICC level UFS device attribute를 제공합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS out-of-order data-transfer state
853-862| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/ooo_data_enabled |
| What | /sys/bus/platform/devices/*.ufs/attributes/ooo_data_enabled |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Out-of-order data transfer가 enabled되어 있는지를 나타내는 UFS device attribute를 제공합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS background-operations status
863-872| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/bkops_status |
| What | /sys/bus/platform/devices/*.ufs/attributes/bkops_status |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Background-operations status UFS device attribute를 제공합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS purge-operation status
873-882| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/purge_status |
| What | /sys/bus/platform/devices/*.ufs/attributes/purge_status |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Purge-operation status UFS device attribute를 제공합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Maximum UFS DATA IN UPIU size
883-892| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/max_data_in_size |
| What | /sys/bus/platform/devices/*.ufs/attributes/max_data_in_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | DATA IN UPIU의 maximum data size를 표시합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Maximum UFS READY TO TRANSFER size
893-902| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/max_data_out_size |
| What | /sys/bus/platform/devices/*.ufs/attributes/max_data_out_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | READY TO TRANSFER UPIU로 요청할 수 있는 maximum byte count를 표시합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS reference-clock frequency
903-912| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/reference_clock_frequency |
| What | /sys/bus/platform/devices/*.ufs/attributes/reference_clock_frequency |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Reference-clock frequency UFS device attribute를 제공합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS configuration-descriptor lock
913-920| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/configuration_descriptor_lock |
| What | /sys/bus/platform/devices/*.ufs/attributes/configuration_descriptor_lock |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Configuration descriptor가 locked되어 있는지 표시합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
Maximum outstanding UFS RTT count
921-933| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/max_number_of_rtt |
| What | /sys/bus/platform/devices/*.ufs/attributes/max_number_of_rtt |
| Date | 2024년 5월 |
| Contact | Avri Altman <avri.altman@wdc.com> |
| Description | Device에서 허용되는 outstanding RTTs의 current maximum number를 제공합니다. `bMaxNumOfRTT`는 read-write persistent attribute이며 device manufacturing 후 값은 2입니다. `bDeviceRTTCap`보다 큰 값으로 설정할 수 없고 hardware queues가 empty일 때만 설정할 수 있습니다. |
| Access | Read-write |
ConstraintRequirement
PersistenceRead-write persistent attribute
Manufacturing value2
Upper boundMust not exceed bDeviceRTTCap
Write timingHardware queues must be empty
Outstanding RTT limit를 변경할 때 지켜야 하는 조건입니다.
UFS exception-event control
934-943| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/exception_event_control |
| What | /sys/bus/platform/devices/*.ufs/attributes/exception_event_control |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Exception-event control UFS device attribute를 제공합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS exception-event status
944-953| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/exception_event_status |
| What | /sys/bus/platform/devices/*.ufs/attributes/exception_event_status |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Exception-event status UFS device attribute를 제공합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS field firmware-update status
954-963| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/ffu_status |
| What | /sys/bus/platform/devices/*.ufs/attributes/ffu_status |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | FFU(field firmware update) status UFS device attribute를 제공합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS PSA feature state
964-972| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/psa_state |
| What | /sys/bus/platform/devices/*.ufs/attributes/psa_state |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | PSA feature status를 표시합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS PSA planned data size
973-984| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/psa_data_size |
| What | /sys/bus/platform/devices/*.ufs/attributes/psa_data_size |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | Host가 pre-soldering state의 모든 logical units에 load하려는 data amount를 표시합니다. attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
UFS LUN dynamic capacity needed
985-993| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/dyn_cap_needed |
| Date | 2018년 2월 |
| Contact | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> |
| Description | 특정 logical unit의 physical-memory resources pool에서 제거해야 하는 physical-memory amount를 표시합니다. Attribute의 전체 정보는 UFS specification 2.1에서 확인할 수 있습니다. |
| Access | Read-only |
ScopeReported value
Selected logical unitPhysical memory to remove from its resource pool
Logical unit과 physical-memory resource pool 사이의 관계입니다.
UFS runtime power-management level
994-1022| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/rpm_lvl |
| What | /sys/bus/platform/devices/*.ufs/rpm_lvl |
| Date | 2014년 9월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | UFS device runtime power-management level을 설정하거나 표시합니다. 현재 driver implementation은 0~6의 7개 levels를 지원하며 각 level은 UFS device와 UIC link의 target state 조합을 선택합니다. Level 6의 deep sleep을 device가 지원하지 않으면 해당 값은 accepted되지 않습니다. |
| Access | Read-write |
LevelUFS device targetUIC link target
0ActiveActive
1ActiveHibernate
2SleepActive
3SleepHibernate
4Powered offHibernate
5Powered offPowered off
6Deep sleep; unsupported devices reject this valuePowered off
Runtime과 system power management에서 공통으로 사용하는 device 및 UIC link target states입니다.
UFS runtime target device state
1023-1031| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/rpm_target_dev_state |
| What | /sys/bus/platform/devices/*.ufs/rpm_target_dev_state |
| Date | 2018년 2월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | 선택한 runtime power-management level에 대응하는 UFS device target power mode를 표시합니다. |
| Access | Read-only |
UFS runtime target link state
1032-1040| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/rpm_target_link_state |
| What | /sys/bus/platform/devices/*.ufs/rpm_target_link_state |
| Date | 2018년 2월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | 선택한 runtime power-management level에 대응하는 UFS UIC link target state를 표시합니다. |
| Access | Read-only |
UFS system power-management level
1041-1067| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/spm_lvl |
| What | /sys/bus/platform/devices/*.ufs/spm_lvl |
| Date | 2014년 9월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | UFS device system power-management level을 설정하거나 표시합니다. 현재 driver implementation은 0~6의 7개 levels를 지원하며 runtime level과 같은 UFS device 및 UIC link target-state 조합을 사용합니다. Level 6의 deep sleep을 device가 지원하지 않으면 해당 값은 accepted되지 않습니다. |
| Access | Read-write |
UFS system target device state
1068-1076| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/spm_target_dev_state |
| What | /sys/bus/platform/devices/*.ufs/spm_target_dev_state |
| Date | 2018년 2월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | 선택한 system power-management level에 대응하는 UFS device target power mode를 표시합니다. |
| Access | Read-only |
UFS system target link state
1077-1085| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/spm_target_link_state |
| What | /sys/bus/platform/devices/*.ufs/spm_target_link_state |
| Date | 2018년 2월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | 선택한 system power-management level에 대응하는 UFS UIC link target state를 표시합니다. |
| Access | Read-only |
UFS performance-monitor state
1086-1093| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/monitor_enable |
| What | /sys/bus/platform/devices/*.ufs/monitor/monitor_enable |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Performance monitor의 enabled status를 표시하고 monitor를 시작하거나 중지하는 데 사용합니다. Monitor를 중지하면 수집된 performance data도 함께 cleared됩니다. |
| Access | Read-write |
StageOperationEffect
ConfigureSet monitor_chunk_size while disabled0 accepts every chunk size
StartEnable monitorBegin collecting counters
ObserveRead totals and latency statisticsData retained
StopDisable monitorCollected data is cleared
Chunk filter를 구성하고 측정을 수행한 뒤 중지할 때 data가 정리되는 순서입니다.
Metric familyRead and write fieldsUnit
Transferred data*_total_sectors512-byte sectors
Busy time*_total_busyMicroseconds
Request count*_nr_requestsRequests
Request latency*_req_latency_{max,min,avg,sum}Microseconds
Read와 write 방향마다 같은 sector, busy-time, request-count, latency measurements를 제공합니다.
UFS performance-monitor chunk filter
1094-1101| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/monitor_chunk_size |
| What | /sys/bus/platform/devices/*.ufs/monitor/monitor_chunk_size |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 지정된 chunk size의 data를 전송하는 requests에 집중하도록 설정하며 단위는 bytes입니다. 값 0은 모든 chunk sizes를 뜻합니다. Monitor가 disabled된 동안에만 변경할 수 있습니다. |
| Access | Read-write |
UFS monitored read-sector total
1102-1110| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/read_total_sectors |
| What | /sys/bus/platform/devices/*.ufs/monitor/read_total_sectors |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 device에서 host로 전송된 sector count를 표시하며 sector 하나는 512 bytes입니다. |
| Access | Read-only |
UFS monitored read busy time
1111-1119| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/read_total_busy |
| What | /sys/bus/platform/devices/*.ufs/monitor/read_total_busy |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 device에서 host로 data를 보내는 데 소비한 total time을 microseconds 단위로 표시합니다. |
| Access | Read-only |
UFS monitored read-request count
1120-1128| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/read_nr_requests |
| What | /sys/bus/platform/devices/*.ufs/monitor/read_nr_requests |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 전송된 read-request count를 표시합니다. |
| Access | Read-only |
Maximum monitored UFS read latency
1129-1137| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_max |
| What | /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_max |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 read requests의 maximum latency를 microseconds 단위로 표시합니다. |
| Access | Read-only |
Minimum monitored UFS read latency
1138-1146| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_min |
| What | /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_min |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 read requests의 minimum latency를 microseconds 단위로 표시합니다. |
| Access | Read-only |
Average monitored UFS read latency
1147-1155| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_avg |
| What | /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_avg |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 read requests의 average latency를 microseconds 단위로 표시합니다. |
| Access | Read-only |
Total monitored UFS read latency
1156-1164| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_sum |
| What | /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_sum |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 전송된 read requests의 total latency를 microseconds 단위로 표시합니다. |
| Access | Read-only |
UFS monitored write-sector total
1165-1173| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/write_total_sectors |
| What | /sys/bus/platform/devices/*.ufs/monitor/write_total_sectors |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 host에서 device로 전송된 sector count를 표시하며 sector 하나는 512 bytes입니다. |
| Access | Read-only |
UFS monitored write busy time
1174-1182| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/write_total_busy |
| What | /sys/bus/platform/devices/*.ufs/monitor/write_total_busy |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 host에서 device로 data를 보내는 데 소비한 total time을 microseconds 단위로 표시합니다. |
| Access | Read-only |
UFS monitored write-request count
1183-1191| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/write_nr_requests |
| What | /sys/bus/platform/devices/*.ufs/monitor/write_nr_requests |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 전송된 write-request count를 표시합니다. |
| Access | Read-only |
Maximum monitored UFS write latency
1192-1200| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_max |
| What | /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_max |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 write requests의 maximum latency를 microseconds 단위로 표시합니다. |
| Access | Read-only |
Minimum monitored UFS write latency
1201-1209| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_min |
| What | /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_min |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 write requests의 minimum latency를 microseconds 단위로 표시합니다. |
| Access | Read-only |
Average monitored UFS write latency
1210-1218| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_avg |
| What | /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_avg |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 write requests의 average latency를 microseconds 단위로 표시합니다. |
| Access | Read-only |
Total monitored UFS write latency
1219-1227| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_sum |
| What | /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_sum |
| Date | 2021년 1월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | Monitor가 시작된 뒤 write requests의 total latency를 microseconds 단위로 표시합니다. |
| Access | Read-only |
UFS link lane count
1228-1236| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/power_info/lane |
| What | /sys/bus/platform/devices/*.ufs/power_info/lane |
| Date | 2023년 9월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | UFS link에서 enabled된 lane count를 표시합니다. 예를 들어 output 2는 UFS link가 2 lanes로 동작함을 뜻합니다. |
| Access | Read-only |
FieldReported state
laneEnabled lane count
modePA power mode
rateLink speed rate
gearLink gear
dev_pmDevice power mode
link_stateUFS link state
현재 UFS link의 topology, signaling, speed와 power states를 구성하는 값입니다.
UFS PA power mode
1237-1244| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/power_info/mode |
| What | /sys/bus/platform/devices/*.ufs/power_info/mode |
| Date | 2023년 9월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | UFS의 PA power mode를 표시합니다. |
| Access | Read-only |
UFS link speed rate
1245-1252| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/power_info/rate |
| What | /sys/bus/platform/devices/*.ufs/power_info/rate |
| Date | 2023년 9월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | UFS link speed rate를 표시합니다. |
| Access | Read-only |
UFS link gear
1253-1260| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/power_info/gear |
| What | /sys/bus/platform/devices/*.ufs/power_info/gear |
| Date | 2023년 9월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | UFS link gear를 표시합니다. |
| Access | Read-only |
UFS device power mode
1261-1268| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/power_info/dev_pm |
| What | /sys/bus/platform/devices/*.ufs/power_info/dev_pm |
| Date | 2023년 9월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | UFS device power mode를 표시합니다. |
| Access | Read-only |
UFS link state
1269-1276| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/power_info/link_state |
| What | /sys/bus/platform/devices/*.ufs/power_info/link_state |
| Date | 2023년 9월 |
| Contact | Can Guo <quic_cang@quicinc.com> |
| Description | UFS link state를 표시합니다. |
| Access | Read-only |
WriteBooster preserve-user-space configuration
1277-1284| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_presv_us_en |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/wb_presv_us_en |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | WriteBooster가 preserve user-space mode로 configured되었는지 표시합니다. |
| Access | Read-only |
Configured WriteBooster buffer type
1293-1301| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_type |
| What | /sys/bus/platform/devices/*.ufs/device_descriptor/wb_type |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | Configured WriteBooster type을 표시합니다. `0x1`은 shared buffer mode이고 `0x0`은 dedicated buffer mode입니다. |
| Access | Read-only |
ValueBuffer mode
0x0Dedicated buffer
0x1Shared buffer
Descriptor value가 선택하는 dedicated 또는 shared buffer mode입니다.
WriteBooster capacity adjustment
1302-1312| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_buff_cap_adj |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_buff_cap_adj |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | Shared buffer mode에서 total user-space decrease를 표시합니다. SLC mode를 WriteBooster Buffer로 사용하는 TLC NAND에서는 3이고 MLC NAND에서는 2입니다. |
| Access | Read-only |
NAND configurationValue
TLC NAND using SLC WriteBooster mode3
MLC NAND2
NAND type에 따른 shared-mode user-space capacity adjustment입니다.
Maximum WriteBooster allocation units
1313-1321| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_max_alloc_units |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_max_alloc_units |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | Entire device가 지원하는 maximum total WriteBooster Buffer size를 allocation units로 표시합니다. |
| Access | Read-only |
Maximum WriteBooster LUN count
1322-1330| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_max_wb_luns |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_max_wb_luns |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | WriteBooster를 지원할 수 있는 maximum LUN count를 표시합니다. |
| Access | Read-only |
WriteBooster user-space reduction support
1331-1345| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_sup_red_type |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_sup_red_type |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | User-space reduction mode와 preserve user-space mode의 supportability를 표시합니다. `00h`는 user-space reduction type만, `01h`는 preserve user-space type만, `02h`는 두 type 모두 configuration할 수 있음을 뜻합니다. |
| Access | Read-only |
ValueSupported configuration
00hUser-space reduction only
01hPreserve user space only
02hEither reduction or preservation
Device가 허용하는 user-space reduction 및 preservation policies입니다.
WriteBooster buffer-type support
1346-1360| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_sup_wb_type |
| What | /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_sup_wb_type |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | WriteBooster Buffer type의 supportability를 표시합니다. `00h`는 LU-based configuration, `01h`는 single shared buffer configuration, `02h`는 두 configurations를 모두 지원합니다. |
| Access | Read-only |
ValueSupported buffer configuration
00hLU based
01hSingle shared
02hLU based and single shared
LU-based와 single shared WriteBooster configurations의 지원 조합입니다.
WriteBooster enabled flag
1361-1373| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/wb_enable |
| What | /sys/bus/platform/devices/*.ufs/flags/wb_enable |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | WriteBooster status를 표시합니다. 값 0은 disabled, 값 1은 enabled입니다. |
| Access | Read-only |
ValueState
0Not enabled
1Enabled
Boolean WriteBooster status입니다.
WriteBooster flush-enabled flag
1374-1386| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/wb_flush_en |
| What | /sys/bus/platform/devices/*.ufs/flags/wb_flush_en |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | WriteBooster flush가 enabled되어 있는지 표시합니다. 값 0은 flush operation을 수행하지 않고 값 1은 수행합니다. |
| Access | Read-only |
ValueFlush behavior
0Not performed
1Performed
Flush operation 수행 여부입니다.
WriteBooster flush during link hibernate
1387-1401| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/flags/wb_flush_during_h8 |
| What | /sys/bus/platform/devices/*.ufs/flags/wb_flush_during_h8 |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | Link hibernate state에서 WriteBooster Buffer를 flush할 수 있는지 표시합니다. 값 0은 허용하지 않고 값 1은 허용합니다. |
| Access | Read-only |
ValuePermission
0Flush is not allowed
1Flush is allowed
Link hibernate state에서 device의 buffer flush permission입니다.
Available WriteBooster buffer
1402-1410| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/wb_avail_buf |
| What | /sys/bus/platform/devices/*.ufs/attributes/wb_avail_buf |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | 사용되지 않아 available한 WriteBooster buffer amount를 표시합니다. |
| Access | Read-only |
Current unused WriteBooster buffer
1411-1418| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/wb_cur_buf |
| What | /sys/bus/platform/devices/*.ufs/attributes/wb_cur_buf |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | 현재 사용되지 않는 current WriteBooster buffer amount를 표시합니다. |
| Access | Read-only |
WriteBooster flush-operation status
1419-1435| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/wb_flush_status |
| What | /sys/bus/platform/devices/*.ufs/attributes/wb_flush_status |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | WriteBooster flush-operation status를 표시합니다. 상태는 idle, in progress, prematurely stopped, successfully completed, general failure 중 하나입니다. |
| Access | Read-only |
ValueStatus
00hIdle
01hFlush in progress
02hStopped prematurely
03hCompleted successfully
04hGeneral failure
Flush operation의 lifecycle 및 terminal states입니다.
WriteBooster buffer lifetime estimate
1436-1450| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/wb_life_time_est |
| What | /sys/bus/platform/devices/*.ufs/attributes/wb_life_time_est |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | Performed program/erase cycle amount를 바탕으로 WriteBooster Buffer lifetime indication을 표시합니다. `01h`는 lifetime 0~10% 사용, 이후 각 단계가 10% 구간을 나타내며 `0Ah`는 90~100% 사용을 뜻합니다. |
| Access | Read-only |
Value rangeLifetime used
01h0% - 10%
02h ... 09h10% - 90% in 10% bands
0Ah90% - 100%
Program/erase cycles를 10% 단위 lifetime-used range로 표현합니다.
Configured WriteBooster buffer size
1451-1458| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/class/scsi_device/*/device/unit_descriptor/wb_buf_alloc_units |
| Date | 2020년 6월 |
| Contact | Asutosh Das <quic_asutoshd@quicinc.com> |
| Description | Configured WriteBooster buffer size를 표시합니다. `0400h`는 4GB에 해당합니다. |
| Access | Read-only |
Descriptor valueBuffer size
0400h4GB
Unit descriptor value와 configured buffer size의 예입니다.
UFS WriteBooster runtime control
1459-1470| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/wb_on |
| What | /sys/bus/platform/devices/*.ufs/wb_on |
| Date | 2021년 1월 |
| Contact | Bean Huo <beanhuo@micron.com> |
| Description | UFS WriteBooster가 enabled되어 있는지 설정하거나 표시합니다. 0을 쓰면 disabled, 1을 쓰면 enabled됩니다. WriteBooster는 power-on/reset 후 enabled되지만 `UFSHCD_CAP_CLK_SCALING`을 지원하는 platform에서는 clock scaling down/up 동안 disabled/enabled됩니다. 해당 capability가 없는 platform에서는 이 sysfs node로 직접 제어할 수 있습니다. |
| Access | Read-write |
Written valueResult
0Disable WriteBooster
1Enable WriteBooster
Sysfs write value에 따른 runtime state입니다.
WriteBooster buffer-flush control
1471-1479| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/enable_wb_buf_flush |
| What | /sys/bus/platform/devices/*.ufs/enable_wb_buf_flush |
| Date | 2022년 7월 |
| Contact | Jinyoung Choi <j-young.choi@samsung.com> |
| Description | WriteBooster buffer flushing status를 표시하며 flushing을 enable하거나 disable하는 데 사용합니다. Flushing이 enabled이면 command queue가 empty일 때 device가 flush operation을 실행합니다. |
| Access | Read-write |
WriteBooster buffer-flush threshold
1480-1490| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/wb_flush_threshold |
| What | /sys/bus/platform/devices/*.ufs/wb_flush_threshold |
| Date | 2023년 6월 |
| Contact | Lu Hongfei <luhongfei@vivo.com> |
| Description | `wb_flush_threshold`는 WriteBooster buffer flush threshold이며 값은 10% granularity 단위입니다. 예를 들어 1은 10%, 2는 20%를 뜻합니다. `avail_wb_buff < wb_flush_threshold`이면 buffer를 flush해야 하며, 그렇지 않으면 flush가 필요하지 않습니다. |
| Access | Read-write |
ItemMeaning
Threshold value NN x 10%
avail_wb_buff < wb_flush_thresholdFlush required
avail_wb_buff >= wb_flush_thresholdFlush not required
Threshold encoding과 flush-decision condition입니다.
Effective UFS host-device capabilities
1491-1500| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/capabilities/ |
| What | /sys/bus/platform/devices/*.ufs/capabilities/ |
| Date | 2022년 8월 |
| Contact | Daniil Lunev <dlunev@chromium.org> |
| Description | Host-device pair의 effective capabilities를 나타내는 group입니다. Specific host controller에 대해 driver에서 enabled되어 있고 host controller가 지원하며, device side에서도 지원되거나 compatible configuration을 가진 capabilities만 포함합니다. |
| Access | Directory |
LayerRequirement
DriverEnabled for the host controller
Host controllerSupported
DeviceSupported or compatibly configured
Capability가 이 group에 나타나기 위해 동시에 충족해야 하는 세 조건입니다.
UFS clock-scaling capability
1501-1514| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/capabilities/clock_scaling |
| What | /sys/bus/platform/devices/*.ufs/capabilities/clock_scaling |
| Date | 2022년 8월 |
| Contact | Daniil Lunev <dlunev@chromium.org> |
| Description | Clock scaling status를 표시합니다. 값 0은 unsupported, 값 1은 supported입니다. |
| Access | Read-only |
ValueCapability
0Not supported
1Supported
Clock scaling support 여부입니다.
UFS WriteBooster capability
1515-1527| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/capabilities/write_booster |
| What | /sys/bus/platform/devices/*.ufs/capabilities/write_booster |
| Date | 2022년 8월 |
| Contact | Daniil Lunev <dlunev@chromium.org> |
| Description | WriteBooster capability status를 표시합니다. 값 0은 enable할 수 없고 값 1은 enable할 수 있음을 뜻합니다. |
| Access | Read-only |
ValueCapability
0Cannot be enabled
1Can be enabled
WriteBooster enable 가능 여부입니다.
UFS RTC update interval
1528-1535| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/rtc_update_ms |
| What | /sys/bus/platform/devices/*.ufs/rtc_update_ms |
| Date | 2023년 11월 |
| Contact | Bean Huo <beanhuo@micron.com> |
| Description | `rtc_update_ms`는 host가 UFS RTC를 synchronize 또는 update해야 하는 주기를 milliseconds 단위로 나타냅니다. 0으로 설정하면 periodic UFS RTC update가 disabled됩니다. |
| Access | Read-write |
UFS host-controller version
1536-1544| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/devices/platform/.../ufshci_capabilities/version |
| Date | 2024년 8월 |
| Contact | Avri Altman <avri.altman@wdc.com> |
| Description | Host Capabilities register group의 UFS version register이며 symbol은 `VER`입니다. UFSHCD version을 표시합니다. 예를 들어 version 3.12는 `0000_0312h`로 표현됩니다. |
| Access | Read-only |
| Symbol | VER |
UFS host-controller product ID
1545-1553| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/devices/platform/.../ufshci_capabilities/product_id |
| Date | 2024년 8월 |
| Contact | Avri Altman <avri.altman@wdc.com> |
| Description | Host Capabilities register group의 product-ID register이며 symbol은 `HCPID`입니다. UFSHCD product ID를 표시하고 register content는 vendor-specific입니다. |
| Access | Read-only |
| Symbol | HCPID |
UFS host-controller manufacturer ID
1554-1562| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/devices/platform/.../ufshci_capabilities/man_id |
| Date | 2024년 8월 |
| Contact | Avri Altman <avri.altman@wdc.com> |
| Description | Host Capabilities register group의 manufacturer-ID register이며 symbol은 `HCMID`입니다. UFSHCD manufacturer ID를 표시하며 ID는 JEDEC-JEP106에서 정의합니다. |
| Access | Read-only |
| Symbol | HCMID |
UFS critical-health event count
1563-1574| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/critical_health |
| What | /sys/bus/platform/devices/*.ufs/critical_health |
| Date | 2025년 2월 |
| Contact | Avri Altman <avri.altman@wdc.com> |
| Description | UFS device가 critical-health event를 보고한 횟수를 표시합니다. 구체적인 문제는 `bPreEOLInfo`, `bDeviceLifeTimeEstA`, `bDeviceLifeTimeEstB`, `bWriteBoosterBufferLifeTimeEst`, `bRPMBLifeTimeEst` 중 하나를 읽어 더 자세히 파악할 수 있습니다. |
| Access | Read-only |
IndicatorArea
bPreEOLInfoPre-end-of-life state
bDeviceLifeTimeEstA/BDevice lifetime estimates
bWriteBoosterBufferLifeTimeEstWriteBooster lifetime
bRPMBLifeTimeEstRPMB lifetime
Critical-health counter가 증가했을 때 확인할 lifetime 및 end-of-life indicators입니다.
UFS clock-scaling control
1575-1585| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/clkscale_enable |
| What | /sys/bus/platform/devices/*.ufs/clkscale_enable |
| Date | 2025년 1월 |
| Contact | Ziqi Chen <quic_ziqichen@quicinc.com> |
| Description | UFS clock scaling이 enabled되어 있는지 표시하며 1 또는 0을 써서 enable 또는 disable할 수 있습니다. |
| Access | Read-write |
UFS clock-gating control
1586-1596| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/clkgate_enable |
| What | /sys/bus/platform/devices/*.ufs/clkgate_enable |
| Date | 2025년 1월 |
| Contact | Ziqi Chen <quic_ziqichen@quicinc.com> |
| Description | UFS clock gating이 enabled되어 있는지 표시하며 1 또는 0을 써서 enable 또는 disable할 수 있습니다. |
| Access | Read-write |
UFS clock-gating idle delay
1597-1607| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/clkgate_delay_ms |
| What | /sys/bus/platform/devices/*.ufs/clkgate_delay_ms |
| Date | 2025년 1월 |
| Contact | Ziqi Chen <quic_ziqichen@quicinc.com> |
| Description | UFS driver가 clock gating을 시작하기 전 idle-time milliseconds를 표시하고 설정합니다. 이 delay는 UFS가 clock gating과 ungating을 지나치게 자주 수행하지 않도록 합니다. |
| Access | Read-write |
UFS device-level exception count
1608-1624| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_count |
| What | /sys/bus/platform/devices/*.ufs/device_lvl_exception_count |
| Date | 2025년 3월 |
| Contact | Bao D. Nguyen <quic_nguyenb@quicinc.com> |
| Description | JEDEC specification 4.1 이상을 준수하는 UFS devices에 적용됩니다. `device_lvl_exception_count`는 이 variable이 마지막으로 reset된 뒤 발생한 device-level exceptions count입니다. 0을 쓰면 counter를 reset합니다. Positive value가 읽히면 user application은 `device_lvl_exception_id`를 읽어 exception 정보를 확인해야 합니다. |
| Access | Read-write |
ActionNode / valueResult
Checkdevice_lvl_exception_countDetect exceptions
Investigatedevice_lvl_exception_idRead vendor-specific ID
ResetWrite 0 to countClear counter
Counter 확인, vendor-specific ID 조회, counter reset 순서입니다.
UFS device-level exception ID
1625-1639| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_id |
| What | /sys/bus/platform/devices/*.ufs/device_lvl_exception_id |
| Date | 2025년 3월 |
| Contact | Bao D. Nguyen <quic_nguyenb@quicinc.com> |
| Description | UFS device JEDEC specification 4.1의 `qDeviceLevelExceptionID` attribute를 반환합니다. 이 ID의 정의는 UFS device vendor-specific implementation이므로 value 의미는 device manufacturer datasheet를 참조해야 합니다. |
| Access | Read-only |
WriteBooster buffer-resize command
1640-1655| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/wb_resize_enable |
| What | /sys/bus/platform/devices/*.ufs/wb_resize_enable |
| Date | 2025년 4월 |
| Contact | Huan Tang <tanghuan@vivo.com> |
| Description | Host가 WriteBooster buffer resize를 요청하는 attribute입니다. `idle`은 resize operation 없음, `decrease`는 buffer size 감소, `increase`는 buffer size 증가를 뜻합니다. |
| Access | Write-only |
CommandOperation
idleNo resize
decreaseDecrease buffer size
increaseIncrease buffer size
Host가 요청할 수 있는 resize operations입니다.
WriteBooster buffer-resize hint
1656-1671| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/wb_resize_hint |
| What | /sys/bus/platform/devices/*.ufs/attributes/wb_resize_hint |
| Date | 2025년 4월 |
| Contact | Huan Tang <tanghuan@vivo.com> |
| Description | Device가 권장하는 WriteBooster buffer resize type의 hint를 표시합니다. `keep`은 size 유지, `decrease`는 감소, `increase`는 증가 권장입니다. |
| Access | Read-only |
HintRecommendation
keepKeep buffer size
decreaseDecrease buffer size
increaseIncrease buffer size
Device가 host에 제공하는 resize recommendation입니다.
WriteBooster buffer-resize status
1672-1688| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/attributes/wb_resize_status |
| What | /sys/bus/platform/devices/*.ufs/attributes/wb_resize_status |
| Date | 2025년 4월 |
| Contact | Huan Tang <tanghuan@vivo.com> |
| Description | WriteBooster buffer resize-operation status를 표시합니다. Status는 not issued, in progress, completed successfully, general failure 중 하나입니다. |
| Access | Read-only |
StatusMeaning
idleOperation not issued
in_progressOperation in progress
complete_successCompleted successfully
general_failureGeneral failure
Resize operation lifecycle입니다.
UFS HID analysis trigger
1689-1702| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/hid/analysis_trigger |
| What | /sys/bus/platform/devices/*.ufs/hid/analysis_trigger |
| Date | 2025년 5월 |
| Contact | Huan Tang <tanghuan@vivo.com> |
| Description | Host가 HID analysis operation을 enable 또는 disable합니다. |
| Access | Write-only |
CommandOperation
disableDisable HID analysis
enableEnable HID analysis
Analysis operation control values입니다.
UFS HID defragmentation trigger
1703-1716| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/hid/defrag_trigger |
| What | /sys/bus/platform/devices/*.ufs/hid/defrag_trigger |
| Date | 2025년 5월 |
| Contact | Huan Tang <tanghuan@vivo.com> |
| Description | Host가 HID defragmentation operation을 enable 또는 disable합니다. |
| Access | Write-only |
CommandOperation
disableDisable HID defragmentation
enableEnable HID defragmentation
Defragmentation operation control values입니다.
UFS HID fragmented size
1717-1726| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/hid/fragmented_size |
| What | /sys/bus/platform/devices/*.ufs/hid/fragmented_size |
| Date | 2025년 5월 |
| Contact | Huan Tang <tanghuan@vivo.com> |
| Description | Device의 total fragmented size를 표시합니다. |
| Access | Read-only |
UFS HID requested defragmentation size
1727-1736| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/hid/defrag_size |
| What | /sys/bus/platform/devices/*.ufs/hid/defrag_size |
| Date | 2025년 5월 |
| Contact | Huan Tang <tanghuan@vivo.com> |
| Description | Host가 HID defragmentation operation으로 defragment할 size를 설정하고 읽습니다. |
| Access | Read-write |
UFS HID defragmentation progress
1737-1753| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/hid/progress_ratio |
| What | /sys/bus/platform/devices/*.ufs/hid/progress_ratio |
| Date | 2025년 5월 |
| Contact | Huan Tang <tanghuan@vivo.com> |
| Description | Requested defragmentation size 대비 completed defragmentation size의 ratio를 1~100%로 표시합니다. |
| Access | Read-only |
ValueProgress
11%
...Intermediate percentages
100100%
Progress attribute의 numeric range입니다.
UFS HID state
1754-1770| 항목 | 한국어 전문 번역 |
|---|---|
| What | /sys/bus/platform/drivers/ufshcd/*/hid/state |
| What | /sys/bus/platform/devices/*.ufs/hid/state |
| Date | 2025년 5월 |
| Contact | Huan Tang <tanghuan@vivo.com> |
| Description | HID state를 표시합니다. Analysis 필요 여부, analysis 진행, defragmentation 필요 여부, defragmentation 진행과 완료 상태를 구분합니다. |
| Access | Read-only |
StateMeaning
idleIdle; analysis required
analysis_in_progressAnalysis in progress
defrag_requiredDefragmentation required
defrag_in_progressDefragmentation in progress
defrag_completedDefragmentation completed
defrag_not_requiredDefragmentation not required
Analysis에서 defragmentation 판단과 실행으로 이어지는 HID state machine values입니다.
Device, geometry, health and string descriptors
sysfs-driver-ufs:1-620Auto-hibernate timer와 UFS device, interconnect, geometry, health, power, string descriptors를 읽어 device identity, capacity, protocol, lifetime과 supply limits를 확인합니다.