| 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. |
| |
| 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_tokens |
| Date: Oct 25, 2019 |
| KernelVersion: 5.6.0 |
| Contact: dmaengine@vger.kernel.org |
| Description: The total number of bandwidth tokens supported by this device. |
| The bandwidth tokens represent resources within the DSA |
| implementation, and these resources are allocated by engines to |
| support operations. |
| |
| 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 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>/token_limit |
| Date: Oct 25, 2019 |
| KernelVersion: 5.6.0 |
| Contact: dmaengine@vger.kernel.org |
| Description: The maximum number of bandwidth tokens that may be in use at |
| one time by operations that access low bandwidth memory in the |
| device. |
| |
| 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/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. |
| |
| 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>/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/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. |
