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TOMOYO Linux Cross Reference
Linux/Documentation/ABI/stable/sysfs-driver-dma-idxd

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Diff markup

Differences between /Documentation/ABI/stable/sysfs-driver-dma-idxd (Version linux-6.12-rc7) and /Documentation/ABI/stable/sysfs-driver-dma-idxd (Version linux-5.18.19)


  1 What:           /sys/bus/dsa/devices/dsa<m>/ve      1 What:           /sys/bus/dsa/devices/dsa<m>/version
  2 Date:           Apr 15, 2020                        2 Date:           Apr 15, 2020
  3 KernelVersion:  5.8.0                               3 KernelVersion:  5.8.0
  4 Contact:        dmaengine@vger.kernel.org           4 Contact:        dmaengine@vger.kernel.org
  5 Description:    The hardware version number.        5 Description:    The hardware version number.
  6                                                     6 
  7 What:           /sys/bus/dsa/devices/dsa<m>/cd      7 What:           /sys/bus/dsa/devices/dsa<m>/cdev_major
  8 Date:           Oct 25, 2019                        8 Date:           Oct 25, 2019
  9 KernelVersion:  5.6.0                               9 KernelVersion:  5.6.0
 10 Contact:        dmaengine@vger.kernel.org          10 Contact:        dmaengine@vger.kernel.org
 11 Description:    The major number that the char     11 Description:    The major number that the character device driver assigned to
 12                 this device.                       12                 this device.
 13                                                    13 
 14 What:           /sys/bus/dsa/devices/dsa<m>/er     14 What:           /sys/bus/dsa/devices/dsa<m>/errors
 15 Date:           Oct 25, 2019                       15 Date:           Oct 25, 2019
 16 KernelVersion:  5.6.0                              16 KernelVersion:  5.6.0
 17 Contact:        dmaengine@vger.kernel.org          17 Contact:        dmaengine@vger.kernel.org
 18 Description:    The error information for this     18 Description:    The error information for this device.
 19                                                    19 
 20 What:           /sys/bus/dsa/devices/dsa<m>/ma     20 What:           /sys/bus/dsa/devices/dsa<m>/max_batch_size
 21 Date:           Oct 25, 2019                       21 Date:           Oct 25, 2019
 22 KernelVersion:  5.6.0                              22 KernelVersion:  5.6.0
 23 Contact:        dmaengine@vger.kernel.org          23 Contact:        dmaengine@vger.kernel.org
 24 Description:    The largest number of work des     24 Description:    The largest number of work descriptors in a batch.
 25                 It's not visible when the devi << 
 26                                                    25 
 27 What:           /sys/bus/dsa/devices/dsa<m>/ma     26 What:           /sys/bus/dsa/devices/dsa<m>/max_work_queues_size
 28 Date:           Oct 25, 2019                       27 Date:           Oct 25, 2019
 29 KernelVersion:  5.6.0                              28 KernelVersion:  5.6.0
 30 Contact:        dmaengine@vger.kernel.org          29 Contact:        dmaengine@vger.kernel.org
 31 Description:    The maximum work queue size su     30 Description:    The maximum work queue size supported by this device.
 32                                                    31 
 33 What:           /sys/bus/dsa/devices/dsa<m>/ma     32 What:           /sys/bus/dsa/devices/dsa<m>/max_engines
 34 Date:           Oct 25, 2019                       33 Date:           Oct 25, 2019
 35 KernelVersion:  5.6.0                              34 KernelVersion:  5.6.0
 36 Contact:        dmaengine@vger.kernel.org          35 Contact:        dmaengine@vger.kernel.org
 37 Description:    The maximum number of engines      36 Description:    The maximum number of engines supported by this device.
 38                                                    37 
 39 What:           /sys/bus/dsa/devices/dsa<m>/ma     38 What:           /sys/bus/dsa/devices/dsa<m>/max_groups
 40 Date:           Oct 25, 2019                       39 Date:           Oct 25, 2019
 41 KernelVersion:  5.6.0                              40 KernelVersion:  5.6.0
 42 Contact:        dmaengine@vger.kernel.org          41 Contact:        dmaengine@vger.kernel.org
 43 Description:    The maximum number of groups c     42 Description:    The maximum number of groups can be created under this device.
 44                                                    43 
 45 What:           /sys/bus/dsa/devices/dsa<m>/ma     44 What:           /sys/bus/dsa/devices/dsa<m>/max_read_buffers
 46 Date:           Dec 10, 2021                       45 Date:           Dec 10, 2021
 47 KernelVersion:  5.17.0                             46 KernelVersion:  5.17.0
 48 Contact:        dmaengine@vger.kernel.org          47 Contact:        dmaengine@vger.kernel.org
 49 Description:    The total number of read buffe     48 Description:    The total number of read buffers supported by this device.
 50                 The read buffers represent res     49                 The read buffers represent resources within the DSA
 51                 implementation, and these reso     50                 implementation, and these resources are allocated by engines to
 52                 support operations. See DSA sp     51                 support operations. See DSA spec v1.2 9.2.4 Total Read Buffers.
 53                 It's not visible when the devi << 
 54                 allocation control.            << 
 55                                                    52 
 56 What:           /sys/bus/dsa/devices/dsa<m>/ma     53 What:           /sys/bus/dsa/devices/dsa<m>/max_transfer_size
 57 Date:           Oct 25, 2019                       54 Date:           Oct 25, 2019
 58 KernelVersion:  5.6.0                              55 KernelVersion:  5.6.0
 59 Contact:        dmaengine@vger.kernel.org          56 Contact:        dmaengine@vger.kernel.org
 60 Description:    The number of bytes to be read     57 Description:    The number of bytes to be read from the source address to
 61                 perform the operation. The max     58                 perform the operation. The maximum transfer size is dependent on
 62                 the workqueue the descriptor w     59                 the workqueue the descriptor was submitted to.
 63                                                    60 
 64 What:           /sys/bus/dsa/devices/dsa<m>/ma     61 What:           /sys/bus/dsa/devices/dsa<m>/max_work_queues
 65 Date:           Oct 25, 2019                       62 Date:           Oct 25, 2019
 66 KernelVersion:  5.6.0                              63 KernelVersion:  5.6.0
 67 Contact:        dmaengine@vger.kernel.org          64 Contact:        dmaengine@vger.kernel.org
 68 Description:    The maximum work queue number      65 Description:    The maximum work queue number that this device supports.
 69                                                    66 
 70 What:           /sys/bus/dsa/devices/dsa<m>/nu     67 What:           /sys/bus/dsa/devices/dsa<m>/numa_node
 71 Date:           Oct 25, 2019                       68 Date:           Oct 25, 2019
 72 KernelVersion:  5.6.0                              69 KernelVersion:  5.6.0
 73 Contact:        dmaengine@vger.kernel.org          70 Contact:        dmaengine@vger.kernel.org
 74 Description:    The numa node number for this      71 Description:    The numa node number for this device.
 75                                                    72 
 76 What:           /sys/bus/dsa/devices/dsa<m>/op     73 What:           /sys/bus/dsa/devices/dsa<m>/op_cap
 77 Date:           Oct 25, 2019                       74 Date:           Oct 25, 2019
 78 KernelVersion:  5.6.0                              75 KernelVersion:  5.6.0
 79 Contact:        dmaengine@vger.kernel.org          76 Contact:        dmaengine@vger.kernel.org
 80 Description:    The operation capability bit m     77 Description:    The operation capability bit mask specify the operation types
 81                 supported by the this device.      78                 supported by the this device.
 82                                                    79 
 83 What:           /sys/bus/dsa/devices/dsa<m>/pa     80 What:           /sys/bus/dsa/devices/dsa<m>/pasid_enabled
 84 Date:           Oct 27, 2020                       81 Date:           Oct 27, 2020
 85 KernelVersion:  5.11.0                             82 KernelVersion:  5.11.0
 86 Contact:        dmaengine@vger.kernel.org          83 Contact:        dmaengine@vger.kernel.org
 87 Description:    To indicate if user PASID (pro !!  84 Description:    To indicate if PASID (process address space identifier) is
 88                 enabled or not for this device     85                 enabled or not for this device.
 89                                                    86 
 90 What:           /sys/bus/dsa/devices/dsa<m>/st     87 What:           /sys/bus/dsa/devices/dsa<m>/state
 91 Date:           Oct 25, 2019                       88 Date:           Oct 25, 2019
 92 KernelVersion:  5.6.0                              89 KernelVersion:  5.6.0
 93 Contact:        dmaengine@vger.kernel.org          90 Contact:        dmaengine@vger.kernel.org
 94 Description:    The state information of this      91 Description:    The state information of this device. It can be either enabled
 95                 or disabled.                       92                 or disabled.
 96                                                    93 
 97 What:           /sys/bus/dsa/devices/dsa<m>/gr     94 What:           /sys/bus/dsa/devices/dsa<m>/group<m>.<n>
 98 Date:           Oct 25, 2019                       95 Date:           Oct 25, 2019
 99 KernelVersion:  5.6.0                              96 KernelVersion:  5.6.0
100 Contact:        dmaengine@vger.kernel.org          97 Contact:        dmaengine@vger.kernel.org
101 Description:    The assigned group under this      98 Description:    The assigned group under this device.
102                                                    99 
103 What:           /sys/bus/dsa/devices/dsa<m>/en    100 What:           /sys/bus/dsa/devices/dsa<m>/engine<m>.<n>
104 Date:           Oct 25, 2019                      101 Date:           Oct 25, 2019
105 KernelVersion:  5.6.0                             102 KernelVersion:  5.6.0
106 Contact:        dmaengine@vger.kernel.org         103 Contact:        dmaengine@vger.kernel.org
107 Description:    The assigned engine under this    104 Description:    The assigned engine under this device.
108                                                   105 
109 What:           /sys/bus/dsa/devices/dsa<m>/wq    106 What:           /sys/bus/dsa/devices/dsa<m>/wq<m>.<n>
110 Date:           Oct 25, 2019                      107 Date:           Oct 25, 2019
111 KernelVersion:  5.6.0                             108 KernelVersion:  5.6.0
112 Contact:        dmaengine@vger.kernel.org         109 Contact:        dmaengine@vger.kernel.org
113 Description:    The assigned work queue under     110 Description:    The assigned work queue under this device.
114                                                   111 
115 What:           /sys/bus/dsa/devices/dsa<m>/co    112 What:           /sys/bus/dsa/devices/dsa<m>/configurable
116 Date:           Oct 25, 2019                      113 Date:           Oct 25, 2019
117 KernelVersion:  5.6.0                             114 KernelVersion:  5.6.0
118 Contact:        dmaengine@vger.kernel.org         115 Contact:        dmaengine@vger.kernel.org
119 Description:    To indicate if this device is     116 Description:    To indicate if this device is configurable or not.
120                                                   117 
121 What:           /sys/bus/dsa/devices/dsa<m>/re    118 What:           /sys/bus/dsa/devices/dsa<m>/read_buffer_limit
122 Date:           Dec 10, 2021                      119 Date:           Dec 10, 2021
123 KernelVersion:  5.17.0                            120 KernelVersion:  5.17.0
124 Contact:        dmaengine@vger.kernel.org         121 Contact:        dmaengine@vger.kernel.org
125 Description:    The maximum number of read buf    122 Description:    The maximum number of read buffers that may be in use at
126                 one time by operations that ac    123                 one time by operations that access low bandwidth memory in the
127                 device. See DSA spec v1.2 9.2.    124                 device. See DSA spec v1.2 9.2.8 GENCFG on Global Read Buffer Limit.
128                 It's not visible when the devi << 
129                 allocation control.            << 
130                                                   125 
131 What:           /sys/bus/dsa/devices/dsa<m>/cm    126 What:           /sys/bus/dsa/devices/dsa<m>/cmd_status
132 Date:           Aug 28, 2020                      127 Date:           Aug 28, 2020
133 KernelVersion:  5.10.0                            128 KernelVersion:  5.10.0
134 Contact:        dmaengine@vger.kernel.org         129 Contact:        dmaengine@vger.kernel.org
135 Description:    The last executed device admin    130 Description:    The last executed device administrative command's status/error.
136                 Also last configuration error     131                 Also last configuration error overloaded.
137                 Writing to it will clear the s    132                 Writing to it will clear the status.
138                                                   133 
139 What:           /sys/bus/dsa/devices/dsa<m>/ia << 
140 Date:           Sept 14, 2022                  << 
141 KernelVersion: 6.0.0                           << 
142 Contact:        dmaengine@vger.kernel.org      << 
143 Description:    IAA (IAX) capability mask. Exp << 
144                 consumption. This attribute sh << 
145                 that are version 2 or later.   << 
146                                                << 
147 What:           /sys/bus/dsa/devices/dsa<m>/ev << 
148 Date:           Sept 14, 2022                  << 
149 KernelVersion: 6.4.0                           << 
150 Contact:        dmaengine@vger.kernel.org      << 
151 Description:    The event log size to be confi << 
152                 occupies 4k size if the evl en << 
153                 only on platforms that support << 
154                                                << 
155 What:           /sys/bus/dsa/devices/wq<m>.<n>    134 What:           /sys/bus/dsa/devices/wq<m>.<n>/block_on_fault
156 Date:           Oct 27, 2020                      135 Date:           Oct 27, 2020
157 KernelVersion:  5.11.0                            136 KernelVersion:  5.11.0
158 Contact:        dmaengine@vger.kernel.org         137 Contact:        dmaengine@vger.kernel.org
159 Description:    To indicate block on fault is     138 Description:    To indicate block on fault is allowed or not for the work queue
160                 to support on demand paging.      139                 to support on demand paging.
161                                                   140 
162 What:           /sys/bus/dsa/devices/wq<m>.<n>    141 What:           /sys/bus/dsa/devices/wq<m>.<n>/group_id
163 Date:           Oct 25, 2019                      142 Date:           Oct 25, 2019
164 KernelVersion:  5.6.0                             143 KernelVersion:  5.6.0
165 Contact:        dmaengine@vger.kernel.org         144 Contact:        dmaengine@vger.kernel.org
166 Description:    The group id that this work qu    145 Description:    The group id that this work queue belongs to.
167                                                   146 
168 What:           /sys/bus/dsa/devices/wq<m>.<n>    147 What:           /sys/bus/dsa/devices/wq<m>.<n>/size
169 Date:           Oct 25, 2019                      148 Date:           Oct 25, 2019
170 KernelVersion:  5.6.0                             149 KernelVersion:  5.6.0
171 Contact:        dmaengine@vger.kernel.org         150 Contact:        dmaengine@vger.kernel.org
172 Description:    The work queue size for this w    151 Description:    The work queue size for this work queue.
173                                                   152 
174 What:           /sys/bus/dsa/devices/wq<m>.<n>    153 What:           /sys/bus/dsa/devices/wq<m>.<n>/type
175 Date:           Oct 25, 2019                      154 Date:           Oct 25, 2019
176 KernelVersion:  5.6.0                             155 KernelVersion:  5.6.0
177 Contact:        dmaengine@vger.kernel.org         156 Contact:        dmaengine@vger.kernel.org
178 Description:    The type of this work queue, i    157 Description:    The type of this work queue, it can be "kernel" type for work
179                 queue usages in the kernel spa    158                 queue usages in the kernel space or "user" type for work queue
180                 usages by applications in user    159                 usages by applications in user space.
181                                                   160 
182 What:           /sys/bus/dsa/devices/wq<m>.<n>    161 What:           /sys/bus/dsa/devices/wq<m>.<n>/cdev_minor
183 Date:           Oct 25, 2019                      162 Date:           Oct 25, 2019
184 KernelVersion:  5.6.0                             163 KernelVersion:  5.6.0
185 Contact:        dmaengine@vger.kernel.org         164 Contact:        dmaengine@vger.kernel.org
186 Description:    The minor number assigned to t    165 Description:    The minor number assigned to this work queue by the character
187                 device driver.                    166                 device driver.
188                                                   167 
189 What:           /sys/bus/dsa/devices/wq<m>.<n>    168 What:           /sys/bus/dsa/devices/wq<m>.<n>/mode
190 Date:           Oct 25, 2019                      169 Date:           Oct 25, 2019
191 KernelVersion:  5.6.0                             170 KernelVersion:  5.6.0
192 Contact:        dmaengine@vger.kernel.org         171 Contact:        dmaengine@vger.kernel.org
193 Description:    The work queue mode type for t    172 Description:    The work queue mode type for this work queue.
194                                                   173 
195 What:           /sys/bus/dsa/devices/wq<m>.<n>    174 What:           /sys/bus/dsa/devices/wq<m>.<n>/priority
196 Date:           Oct 25, 2019                      175 Date:           Oct 25, 2019
197 KernelVersion:  5.6.0                             176 KernelVersion:  5.6.0
198 Contact:        dmaengine@vger.kernel.org         177 Contact:        dmaengine@vger.kernel.org
199 Description:    The priority value of this wor    178 Description:    The priority value of this work queue, it is a value relative to
200                 other work queue in the same g    179                 other work queue in the same group to control quality of service
201                 for dispatching work from mult    180                 for dispatching work from multiple workqueues in the same group.
202                                                   181 
203 What:           /sys/bus/dsa/devices/wq<m>.<n>    182 What:           /sys/bus/dsa/devices/wq<m>.<n>/state
204 Date:           Oct 25, 2019                      183 Date:           Oct 25, 2019
205 KernelVersion:  5.6.0                             184 KernelVersion:  5.6.0
206 Contact:        dmaengine@vger.kernel.org         185 Contact:        dmaengine@vger.kernel.org
207 Description:    The current state of the work     186 Description:    The current state of the work queue.
208                                                   187 
209 What:           /sys/bus/dsa/devices/wq<m>.<n>    188 What:           /sys/bus/dsa/devices/wq<m>.<n>/threshold
210 Date:           Oct 25, 2019                      189 Date:           Oct 25, 2019
211 KernelVersion:  5.6.0                             190 KernelVersion:  5.6.0
212 Contact:        dmaengine@vger.kernel.org         191 Contact:        dmaengine@vger.kernel.org
213 Description:    The number of entries in this     192 Description:    The number of entries in this work queue that may be filled
214                 via a limited portal.             193                 via a limited portal.
215                                                   194 
216 What:           /sys/bus/dsa/devices/wq<m>.<n>    195 What:           /sys/bus/dsa/devices/wq<m>.<n>/max_transfer_size
217 Date:           Aug 28, 2020                      196 Date:           Aug 28, 2020
218 KernelVersion:  5.10.0                            197 KernelVersion:  5.10.0
219 Contact:        dmaengine@vger.kernel.org         198 Contact:        dmaengine@vger.kernel.org
220 Description:    The max transfer sized for thi    199 Description:    The max transfer sized for this workqueue. Cannot exceed device
221                 max transfer size. Configurabl    200                 max transfer size. Configurable parameter.
222                                                   201 
223 What:           /sys/bus/dsa/devices/wq<m>.<n>    202 What:           /sys/bus/dsa/devices/wq<m>.<n>/max_batch_size
224 Date:           Aug 28, 2020                      203 Date:           Aug 28, 2020
225 KernelVersion:  5.10.0                            204 KernelVersion:  5.10.0
226 Contact:        dmaengine@vger.kernel.org         205 Contact:        dmaengine@vger.kernel.org
227 Description:    The max batch size for this wo    206 Description:    The max batch size for this workqueue. Cannot exceed device
228                 max batch size. Configurable p    207                 max batch size. Configurable parameter.
229                 It's not visible when the devi << 
230                                                   208 
231 What:           /sys/bus/dsa/devices/wq<m>.<n>    209 What:           /sys/bus/dsa/devices/wq<m>.<n>/ats_disable
232 Date:           Nov 13, 2020                      210 Date:           Nov 13, 2020
233 KernelVersion:  5.11.0                            211 KernelVersion:  5.11.0
234 Contact:        dmaengine@vger.kernel.org         212 Contact:        dmaengine@vger.kernel.org
235 Description:    Indicate whether ATS disable i    213 Description:    Indicate whether ATS disable is turned on for the workqueue.
236                 0 indicates ATS is on, and 1 i    214                 0 indicates ATS is on, and 1 indicates ATS is off for the workqueue.
237                                                   215 
238 What:           /sys/bus/dsa/devices/wq<m>.<n> << 
239 Date:           Sept 14, 2022                  << 
240 KernelVersion: 6.4.0                           << 
241 Contact:        dmaengine@vger.kernel.org      << 
242 Description:    Controls whether PRS disable i << 
243                 0 indicates PRS is on, and 1 i << 
244                 workqueue. This option overrid << 
245                 if set. It's visible only on p << 
246                 capability.                    << 
247                                                << 
248 What:           /sys/bus/dsa/devices/wq<m>.<n>    216 What:           /sys/bus/dsa/devices/wq<m>.<n>/occupancy
249 Date            May 25, 2021                      217 Date            May 25, 2021
250 KernelVersion:  5.14.0                            218 KernelVersion:  5.14.0
251 Contact:        dmaengine@vger.kernel.org         219 Contact:        dmaengine@vger.kernel.org
252 Description:    Show the current number of ent    220 Description:    Show the current number of entries in this WQ if WQ Occupancy
253                 Support bit WQ capabilities is    221                 Support bit WQ capabilities is 1.
254                                                   222 
255 What:           /sys/bus/dsa/devices/wq<m>.<n>    223 What:           /sys/bus/dsa/devices/wq<m>.<n>/enqcmds_retries
256 Date            Oct 29, 2021                      224 Date            Oct 29, 2021
257 KernelVersion:  5.17.0                            225 KernelVersion:  5.17.0
258 Contact:        dmaengine@vger.kernel.org         226 Contact:        dmaengine@vger.kernel.org
259 Description:    Indicate the number of retires    227 Description:    Indicate the number of retires for an enqcmds submission on a sharedwq.
260                 A max value to set attribute i    228                 A max value to set attribute is capped at 64.
261                                                   229 
262 What:           /sys/bus/dsa/devices/wq<m>.<n> << 
263 Date:           Sept 14, 2022                  << 
264 KernelVersion:  6.0.0                          << 
265 Contact:        dmaengine@vger.kernel.org      << 
266 Description:    Shows the operation capability << 
267                 presented by %*pb printk() out << 
268                 The attribute can be configure << 
269                 order to configure the WQ to a << 
270                 correlates to the operations a << 
271                 on platforms that support the  << 
272                                                << 
273 What:           /sys/bus/dsa/devices/wq<m>.<n> << 
274 Date:           Sept 8, 2023                   << 
275 KernelVersion:  6.7.0                          << 
276 Contact:        dmaengine@vger.kernel.org      << 
277 Description:    Name of driver to be bounded t << 
278                                                << 
279 What:           /sys/bus/dsa/devices/engine<m>    230 What:           /sys/bus/dsa/devices/engine<m>.<n>/group_id
280 Date:           Oct 25, 2019                      231 Date:           Oct 25, 2019
281 KernelVersion:  5.6.0                             232 KernelVersion:  5.6.0
282 Contact:        dmaengine@vger.kernel.org         233 Contact:        dmaengine@vger.kernel.org
283 Description:    The group that this engine bel    234 Description:    The group that this engine belongs to.
284                                                   235 
285 What:           /sys/bus/dsa/devices/group<m>.    236 What:           /sys/bus/dsa/devices/group<m>.<n>/use_read_buffer_limit
286 Date:           Dec 10, 2021                      237 Date:           Dec 10, 2021
287 KernelVersion:  5.17.0                            238 KernelVersion:  5.17.0
288 Contact:        dmaengine@vger.kernel.org         239 Contact:        dmaengine@vger.kernel.org
289 Description:    Enable the use of global read     240 Description:    Enable the use of global read buffer limit for the group. See DSA
290                 spec v1.2 9.2.18 GRPCFG Use Gl    241                 spec v1.2 9.2.18 GRPCFG Use Global Read Buffer Limit.
291                 It's not visible when the devi << 
292                 allocation control.            << 
293                                                   242 
294 What:           /sys/bus/dsa/devices/group<m>.    243 What:           /sys/bus/dsa/devices/group<m>.<n>/read_buffers_allowed
295 Date:           Dec 10, 2021                      244 Date:           Dec 10, 2021
296 KernelVersion:  5.17.0                            245 KernelVersion:  5.17.0
297 Contact:        dmaengine@vger.kernel.org         246 Contact:        dmaengine@vger.kernel.org
298 Description:    Indicates max number of read b    247 Description:    Indicates max number of read buffers that may be in use at one time
299                 by all engines in the group. S    248                 by all engines in the group. See DSA spec v1.2 9.2.18 GRPCFG Read
300                 Buffers Allowed.                  249                 Buffers Allowed.
301                 It's not visible when the devi << 
302                 allocation control.            << 
303                                                   250 
304 What:           /sys/bus/dsa/devices/group<m>.    251 What:           /sys/bus/dsa/devices/group<m>.<n>/read_buffers_reserved
305 Date:           Dec 10, 2021                      252 Date:           Dec 10, 2021
306 KernelVersion:  5.17.0                            253 KernelVersion:  5.17.0
307 Contact:        dmaengine@vger.kernel.org         254 Contact:        dmaengine@vger.kernel.org
308 Description:    Indicates the number of Read B    255 Description:    Indicates the number of Read Buffers reserved for the use of
309                 engines in the group. See DSA     256                 engines in the group. See DSA spec v1.2 9.2.18 GRPCFG Read Buffers
310                 Reserved.                         257                 Reserved.
311                 It's not visible when the devi << 
312                 allocation control.            << 
313                                                << 
314 What:           /sys/bus/dsa/devices/group<m>. << 
315 Date:           Sept 14, 2022                  << 
316 KernelVersion:  6.0.0                          << 
317 Contact:        dmaengine@vger.kernel.org      << 
318 Description:    Allows control of the number o << 
319                 concurrently processed by an e << 
320                 of the Maximum Work Descriptor << 
321                 the ENGCAP register. The accep << 
322                 1 (1/2 of max value), 2 (1/4 o << 
323                 the max value). It's visible o << 
324                 the capability.                << 
325                                                << 
326 What:           /sys/bus/dsa/devices/group<m>. << 
327 Date:           Sept 14, 2022                  << 
328 KernelVersion:  6.0.0                          << 
329 Contact:        dmaengine@vger.kernel.org      << 
330 Description:    Allows control of the number o << 
331                 concurrently processed by an e << 
332                 of the Maximum Batch Descripto << 
333                 the ENGCAP register. The accep << 
334                 1 (1/2 of max value), 2 (1/4 o << 
335                 the max value). It's visible o << 
336                 the capability.                << 
337                                                << 
338 What:           /sys/bus/dsa/devices/wq<m>.<n> << 
339 Date:           Sept 14, 2022                  << 
340 KernelVersion:  6.4.0                          << 
341 Contact:        dmaengine@vger.kernel.org      << 
342 Description:    Show the number of Completion  << 
343                 has caused.                    << 
344                                                << 
345 What:           /sys/bus/dsa/devices/wq<m>.<n> << 
346 Date:           Sept 14, 2022                  << 
347 KernelVersion:  6.4.0                          << 
348 Contact:        dmaengine@vger.kernel.org      << 
349 Description:    Show the number of Completion  << 
350                 application has caused. The fa << 
351                 driver cannot fault in the add << 
352                 by a bad address programmed in << 
353                 submitter is using bad CR addr << 
354                                                << 
355 What:           /sys/bus/dsa/devices/wq<m>.<n> << 
356 Date:           Sept 14, 2022                  << 
357 KernelVersion:  6.4.0                          << 
358 Contact:        dmaengine@vger.kernel.org      << 
359 Description:    Show the process id of the app << 
360                 helpful information for a moni << 
361                 application that opened the fi << 
                                                      

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