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dmaengine: idxd: add sysfs ABI for idxd driver
Add the sysfs ABI information for idxd driver in Documentation/ABI/stable directory. Signed-off-by: Jing Lin <jing.lin@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/157965025170.73301.13428570530450446901.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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| Original file line number | Diff line number | Diff line change |
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| 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. | ||
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| 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. | ||
|
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||
| 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. | ||
|
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| 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. | ||
|
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| 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. | ||
|
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||
| 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>/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/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 vlue 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/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. |