Based on kernel version 6.8. Page generated on 2024-03-11 21:26 EST.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 |
What: /sys/bus/dsa/devices/dsa<m>/version
Date: Apr 15, 2020
KernelVersion: 5.8.0
Contact: dmaengine@vger.kernel.org
Description: The hardware version number.
What: /sys/bus/dsa/devices/dsa<m>/cdev_major
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The major number that the character device driver assigned to
this device.
What: /sys/bus/dsa/devices/dsa<m>/errors
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The error information for this device.
What: /sys/bus/dsa/devices/dsa<m>/max_batch_size
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The largest number of work descriptors in a batch.
It's not visible when the device does not support batch.
What: /sys/bus/dsa/devices/dsa<m>/max_work_queues_size
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The maximum work queue size supported by this device.
What: /sys/bus/dsa/devices/dsa<m>/max_engines
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The maximum number of engines supported by this device.
What: /sys/bus/dsa/devices/dsa<m>/max_groups
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The maximum number of groups can be created under this device.
What: /sys/bus/dsa/devices/dsa<m>/max_read_buffers
Date: Dec 10, 2021
KernelVersion: 5.17.0
Contact: dmaengine@vger.kernel.org
Description: The total number of read buffers supported by this device.
The read buffers represent resources within the DSA
implementation, and these resources are allocated by engines to
support operations. See DSA spec v1.2 9.2.4 Total Read Buffers.
It's not visible when the device does not support Read Buffer
allocation control.
What: /sys/bus/dsa/devices/dsa<m>/max_transfer_size
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The number of bytes to be read from the source address to
perform the operation. The maximum transfer size is dependent on
the workqueue the descriptor was submitted to.
What: /sys/bus/dsa/devices/dsa<m>/max_work_queues
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The maximum work queue number that this device supports.
What: /sys/bus/dsa/devices/dsa<m>/numa_node
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The numa node number for this device.
What: /sys/bus/dsa/devices/dsa<m>/op_cap
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The operation capability bit mask specify the operation types
supported by the this device.
What: /sys/bus/dsa/devices/dsa<m>/pasid_enabled
Date: Oct 27, 2020
KernelVersion: 5.11.0
Contact: dmaengine@vger.kernel.org
Description: To indicate if user PASID (process address space identifier) is
enabled or not for this device.
What: /sys/bus/dsa/devices/dsa<m>/state
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The state information of this device. It can be either enabled
or disabled.
What: /sys/bus/dsa/devices/dsa<m>/group<m>.<n>
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The assigned group under this device.
What: /sys/bus/dsa/devices/dsa<m>/engine<m>.<n>
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The assigned engine under this device.
What: /sys/bus/dsa/devices/dsa<m>/wq<m>.<n>
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The assigned work queue under this device.
What: /sys/bus/dsa/devices/dsa<m>/configurable
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: To indicate if this device is configurable or not.
What: /sys/bus/dsa/devices/dsa<m>/read_buffer_limit
Date: Dec 10, 2021
KernelVersion: 5.17.0
Contact: dmaengine@vger.kernel.org
Description: The maximum number of read buffers that may be in use at
one time by operations that access low bandwidth memory in the
device. See DSA spec v1.2 9.2.8 GENCFG on Global Read Buffer Limit.
It's not visible when the device does not support Read Buffer
allocation control.
What: /sys/bus/dsa/devices/dsa<m>/cmd_status
Date: Aug 28, 2020
KernelVersion: 5.10.0
Contact: dmaengine@vger.kernel.org
Description: The last executed device administrative command's status/error.
Also last configuration error overloaded.
Writing to it will clear the status.
What: /sys/bus/dsa/devices/dsa<m>/iaa_cap
Date: Sept 14, 2022
KernelVersion: 6.0.0
Contact: dmaengine@vger.kernel.org
Description: IAA (IAX) capability mask. Exported to user space for application
consumption. This attribute should only be visible on IAA devices
that are version 2 or later.
What: /sys/bus/dsa/devices/dsa<m>/event_log_size
Date: Sept 14, 2022
KernelVersion: 6.4.0
Contact: dmaengine@vger.kernel.org
Description: The event log size to be configured. Default is 64 entries and
occupies 4k size if the evl entry is 64 bytes. It's visible
only on platforms that support the capability.
What: /sys/bus/dsa/devices/wq<m>.<n>/block_on_fault
Date: Oct 27, 2020
KernelVersion: 5.11.0
Contact: dmaengine@vger.kernel.org
Description: To indicate block on fault is allowed or not for the work queue
to support on demand paging.
What: /sys/bus/dsa/devices/wq<m>.<n>/group_id
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The group id that this work queue belongs to.
What: /sys/bus/dsa/devices/wq<m>.<n>/size
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The work queue size for this work queue.
What: /sys/bus/dsa/devices/wq<m>.<n>/type
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The type of this work queue, it can be "kernel" type for work
queue usages in the kernel space or "user" type for work queue
usages by applications in user space.
What: /sys/bus/dsa/devices/wq<m>.<n>/cdev_minor
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The minor number assigned to this work queue by the character
device driver.
What: /sys/bus/dsa/devices/wq<m>.<n>/mode
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The work queue mode type for this work queue.
What: /sys/bus/dsa/devices/wq<m>.<n>/priority
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The priority value of this work queue, it is a value relative to
other work queue in the same group to control quality of service
for dispatching work from multiple workqueues in the same group.
What: /sys/bus/dsa/devices/wq<m>.<n>/state
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The current state of the work queue.
What: /sys/bus/dsa/devices/wq<m>.<n>/threshold
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The number of entries in this work queue that may be filled
via a limited portal.
What: /sys/bus/dsa/devices/wq<m>.<n>/max_transfer_size
Date: Aug 28, 2020
KernelVersion: 5.10.0
Contact: dmaengine@vger.kernel.org
Description: The max transfer sized for this workqueue. Cannot exceed device
max transfer size. Configurable parameter.
What: /sys/bus/dsa/devices/wq<m>.<n>/max_batch_size
Date: Aug 28, 2020
KernelVersion: 5.10.0
Contact: dmaengine@vger.kernel.org
Description: The max batch size for this workqueue. Cannot exceed device
max batch size. Configurable parameter.
It's not visible when the device does not support batch.
What: /sys/bus/dsa/devices/wq<m>.<n>/ats_disable
Date: Nov 13, 2020
KernelVersion: 5.11.0
Contact: dmaengine@vger.kernel.org
Description: Indicate whether ATS disable is turned on for the workqueue.
0 indicates ATS is on, and 1 indicates ATS is off for the workqueue.
What: /sys/bus/dsa/devices/wq<m>.<n>/prs_disable
Date: Sept 14, 2022
KernelVersion: 6.4.0
Contact: dmaengine@vger.kernel.org
Description: Controls whether PRS disable is turned on for the workqueue.
0 indicates PRS is on, and 1 indicates PRS is off for the
workqueue. This option overrides block_on_fault attribute
if set. It's visible only on platforms that support the
capability.
What: /sys/bus/dsa/devices/wq<m>.<n>/occupancy
Date May 25, 2021
KernelVersion: 5.14.0
Contact: dmaengine@vger.kernel.org
Description: Show the current number of entries in this WQ if WQ Occupancy
Support bit WQ capabilities is 1.
What: /sys/bus/dsa/devices/wq<m>.<n>/enqcmds_retries
Date Oct 29, 2021
KernelVersion: 5.17.0
Contact: dmaengine@vger.kernel.org
Description: Indicate the number of retires for an enqcmds submission on a sharedwq.
A max value to set attribute is capped at 64.
What: /sys/bus/dsa/devices/wq<m>.<n>/op_config
Date: Sept 14, 2022
KernelVersion: 6.0.0
Contact: dmaengine@vger.kernel.org
Description: Shows the operation capability bits displayed in bitmap format
presented by %*pb printk() output format specifier.
The attribute can be configured when the WQ is disabled in
order to configure the WQ to accept specific bits that
correlates to the operations allowed. It's visible only
on platforms that support the capability.
What: /sys/bus/dsa/devices/wq<m>.<n>/driver_name
Date: Sept 8, 2023
KernelVersion: 6.7.0
Contact: dmaengine@vger.kernel.org
Description: Name of driver to be bounded to the wq.
What: /sys/bus/dsa/devices/engine<m>.<n>/group_id
Date: Oct 25, 2019
KernelVersion: 5.6.0
Contact: dmaengine@vger.kernel.org
Description: The group that this engine belongs to.
What: /sys/bus/dsa/devices/group<m>.<n>/use_read_buffer_limit
Date: Dec 10, 2021
KernelVersion: 5.17.0
Contact: dmaengine@vger.kernel.org
Description: Enable the use of global read buffer limit for the group. See DSA
spec v1.2 9.2.18 GRPCFG Use Global Read Buffer Limit.
It's not visible when the device does not support Read Buffer
allocation control.
What: /sys/bus/dsa/devices/group<m>.<n>/read_buffers_allowed
Date: Dec 10, 2021
KernelVersion: 5.17.0
Contact: dmaengine@vger.kernel.org
Description: Indicates max number of read buffers that may be in use at one time
by all engines in the group. See DSA spec v1.2 9.2.18 GRPCFG Read
Buffers Allowed.
It's not visible when the device does not support Read Buffer
allocation control.
What: /sys/bus/dsa/devices/group<m>.<n>/read_buffers_reserved
Date: Dec 10, 2021
KernelVersion: 5.17.0
Contact: dmaengine@vger.kernel.org
Description: Indicates the number of Read Buffers reserved for the use of
engines in the group. See DSA spec v1.2 9.2.18 GRPCFG Read Buffers
Reserved.
It's not visible when the device does not support Read Buffer
allocation control.
What: /sys/bus/dsa/devices/group<m>.<n>/desc_progress_limit
Date: Sept 14, 2022
KernelVersion: 6.0.0
Contact: dmaengine@vger.kernel.org
Description: Allows control of the number of work descriptors that can be
concurrently processed by an engine in the group as a fraction
of the Maximum Work Descriptors in Progress value specified in
the ENGCAP register. The acceptable values are 0 (default),
1 (1/2 of max value), 2 (1/4 of the max value), and 3 (1/8 of
the max value). It's visible only on platforms that support
the capability.
What: /sys/bus/dsa/devices/group<m>.<n>/batch_progress_limit
Date: Sept 14, 2022
KernelVersion: 6.0.0
Contact: dmaengine@vger.kernel.org
Description: Allows control of the number of batch descriptors that can be
concurrently processed by an engine in the group as a fraction
of the Maximum Batch Descriptors in Progress value specified in
the ENGCAP register. The acceptable values are 0 (default),
1 (1/2 of max value), 2 (1/4 of the max value), and 3 (1/8 of
the max value). It's visible only on platforms that support
the capability.
What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/cr_faults
Date: Sept 14, 2022
KernelVersion: 6.4.0
Contact: dmaengine@vger.kernel.org
Description: Show the number of Completion Record (CR) faults this application
has caused.
What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/cr_fault_failures
Date: Sept 14, 2022
KernelVersion: 6.4.0
Contact: dmaengine@vger.kernel.org
Description: Show the number of Completion Record (CR) faults failures that this
application has caused. The failure counter is incremented when the
driver cannot fault in the address for the CR. Typically this is caused
by a bad address programmed in the submitted descriptor or a malicious
submitter is using bad CR address on purpose.
What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/pid
Date: Sept 14, 2022
KernelVersion: 6.4.0
Contact: dmaengine@vger.kernel.org
Description: Show the process id of the application that opened the file. This is
helpful information for a monitor daemon that wants to kill the
application that opened the file.
|