177522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/version 2c2ce6bbcSDave JiangDate: Apr 15, 2020 3c2ce6bbcSDave JiangKernelVersion: 5.8.0 4c2ce6bbcSDave JiangContact: dmaengine@vger.kernel.org 5c2ce6bbcSDave JiangDescription: The hardware version number. 6c2ce6bbcSDave Jiang 777522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/cdev_major 8b131ad59SJing LinDate: Oct 25, 2019 9b131ad59SJing LinKernelVersion: 5.6.0 10b131ad59SJing LinContact: dmaengine@vger.kernel.org 11b131ad59SJing LinDescription: The major number that the character device driver assigned to 12b131ad59SJing Lin this device. 13b131ad59SJing Lin 1477522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/errors 15b131ad59SJing LinDate: Oct 25, 2019 16b131ad59SJing LinKernelVersion: 5.6.0 17b131ad59SJing LinContact: dmaengine@vger.kernel.org 18b131ad59SJing LinDescription: The error information for this device. 19b131ad59SJing Lin 2077522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/max_batch_size 21b131ad59SJing LinDate: Oct 25, 2019 22b131ad59SJing LinKernelVersion: 5.6.0 23b131ad59SJing LinContact: dmaengine@vger.kernel.org 24b131ad59SJing LinDescription: The largest number of work descriptors in a batch. 25b131ad59SJing Lin 2677522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/max_work_queues_size 27b131ad59SJing LinDate: Oct 25, 2019 28b131ad59SJing LinKernelVersion: 5.6.0 29b131ad59SJing LinContact: dmaengine@vger.kernel.org 30b131ad59SJing LinDescription: The maximum work queue size supported by this device. 31b131ad59SJing Lin 3277522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/max_engines 33b131ad59SJing LinDate: Oct 25, 2019 34b131ad59SJing LinKernelVersion: 5.6.0 35b131ad59SJing LinContact: dmaengine@vger.kernel.org 36b131ad59SJing LinDescription: The maximum number of engines supported by this device. 37b131ad59SJing Lin 3877522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/max_groups 39b131ad59SJing LinDate: Oct 25, 2019 40b131ad59SJing LinKernelVersion: 5.6.0 41b131ad59SJing LinContact: dmaengine@vger.kernel.org 42b131ad59SJing LinDescription: The maximum number of groups can be created under this device. 43b131ad59SJing Lin 4477522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/max_tokens 45b131ad59SJing LinDate: Oct 25, 2019 46b131ad59SJing LinKernelVersion: 5.6.0 47b131ad59SJing LinContact: dmaengine@vger.kernel.org 48b131ad59SJing LinDescription: The total number of bandwidth tokens supported by this device. 49b131ad59SJing Lin The bandwidth tokens represent resources within the DSA 50b131ad59SJing Lin implementation, and these resources are allocated by engines to 51b131ad59SJing Lin support operations. 52b131ad59SJing Lin 5377522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/max_transfer_size 54b131ad59SJing LinDate: Oct 25, 2019 55b131ad59SJing LinKernelVersion: 5.6.0 56b131ad59SJing LinContact: dmaengine@vger.kernel.org 57b131ad59SJing LinDescription: The number of bytes to be read from the source address to 58b131ad59SJing Lin perform the operation. The maximum transfer size is dependent on 59b131ad59SJing Lin the workqueue the descriptor was submitted to. 60b131ad59SJing Lin 6177522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/max_work_queues 62b131ad59SJing LinDate: Oct 25, 2019 63b131ad59SJing LinKernelVersion: 5.6.0 64b131ad59SJing LinContact: dmaengine@vger.kernel.org 65b131ad59SJing LinDescription: The maximum work queue number that this device supports. 66b131ad59SJing Lin 6777522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/numa_node 68b131ad59SJing LinDate: Oct 25, 2019 69b131ad59SJing LinKernelVersion: 5.6.0 70b131ad59SJing LinContact: dmaengine@vger.kernel.org 71b131ad59SJing LinDescription: The numa node number for this device. 72b131ad59SJing Lin 7377522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/op_cap 74b131ad59SJing LinDate: Oct 25, 2019 75b131ad59SJing LinKernelVersion: 5.6.0 76b131ad59SJing LinContact: dmaengine@vger.kernel.org 77b131ad59SJing LinDescription: The operation capability bit mask specify the operation types 78b131ad59SJing Lin supported by the this device. 79b131ad59SJing Lin 804749f51dSDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/pasid_enabled 814749f51dSDave JiangDate: Oct 27, 2020 824749f51dSDave JiangKernelVersion: 5.11.0 834749f51dSDave JiangContact: dmaengine@vger.kernel.org 844749f51dSDave JiangDescription: To indicate if PASID (process address space identifier) is 854749f51dSDave Jiang enabled or not for this device. 864749f51dSDave Jiang 8777522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/state 88b131ad59SJing LinDate: Oct 25, 2019 89b131ad59SJing LinKernelVersion: 5.6.0 90b131ad59SJing LinContact: dmaengine@vger.kernel.org 91b131ad59SJing LinDescription: The state information of this device. It can be either enabled 92b131ad59SJing Lin or disabled. 93b131ad59SJing Lin 9477522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/group<m>.<n> 95b131ad59SJing LinDate: Oct 25, 2019 96b131ad59SJing LinKernelVersion: 5.6.0 97b131ad59SJing LinContact: dmaengine@vger.kernel.org 98b131ad59SJing LinDescription: The assigned group under this device. 99b131ad59SJing Lin 10077522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/engine<m>.<n> 101b131ad59SJing LinDate: Oct 25, 2019 102b131ad59SJing LinKernelVersion: 5.6.0 103b131ad59SJing LinContact: dmaengine@vger.kernel.org 104b131ad59SJing LinDescription: The assigned engine under this device. 105b131ad59SJing Lin 10677522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/wq<m>.<n> 107b131ad59SJing LinDate: Oct 25, 2019 108b131ad59SJing LinKernelVersion: 5.6.0 109b131ad59SJing LinContact: dmaengine@vger.kernel.org 110b131ad59SJing LinDescription: The assigned work queue under this device. 111b131ad59SJing Lin 11277522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/configurable 113b131ad59SJing LinDate: Oct 25, 2019 114b131ad59SJing LinKernelVersion: 5.6.0 115b131ad59SJing LinContact: dmaengine@vger.kernel.org 116b131ad59SJing LinDescription: To indicate if this device is configurable or not. 117b131ad59SJing Lin 11877522b21SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/token_limit 119b131ad59SJing LinDate: Oct 25, 2019 120b131ad59SJing LinKernelVersion: 5.6.0 121b131ad59SJing LinContact: dmaengine@vger.kernel.org 122b131ad59SJing LinDescription: The maximum number of bandwidth tokens that may be in use at 123b131ad59SJing Lin one time by operations that access low bandwidth memory in the 124b131ad59SJing Lin device. 125b131ad59SJing Lin 126ff18de55SDave JiangWhat: /sys/bus/dsa/devices/dsa<m>/cmd_status 127ff18de55SDave JiangDate: Aug 28, 2020 128ff18de55SDave JiangKernelVersion: 5.10.0 129ff18de55SDave JiangContact: dmaengine@vger.kernel.org 130ff18de55SDave JiangDescription: The last executed device administrative command's status/error. 131ff18de55SDave Jiang 1324749f51dSDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/block_on_fault 1334749f51dSDave JiangDate: Oct 27, 2020 1344749f51dSDave JiangKernelVersion: 5.11.0 1354749f51dSDave JiangContact: dmaengine@vger.kernel.org 1364749f51dSDave JiangDescription: To indicate block on fault is allowed or not for the work queue 1374749f51dSDave Jiang to support on demand paging. 1384749f51dSDave Jiang 13977522b21SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/group_id 140b131ad59SJing LinDate: Oct 25, 2019 141b131ad59SJing LinKernelVersion: 5.6.0 142b131ad59SJing LinContact: dmaengine@vger.kernel.org 143b131ad59SJing LinDescription: The group id that this work queue belongs to. 144b131ad59SJing Lin 14577522b21SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/size 146b131ad59SJing LinDate: Oct 25, 2019 147b131ad59SJing LinKernelVersion: 5.6.0 148b131ad59SJing LinContact: dmaengine@vger.kernel.org 149b131ad59SJing LinDescription: The work queue size for this work queue. 150b131ad59SJing Lin 15177522b21SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/type 152b131ad59SJing LinDate: Oct 25, 2019 153b131ad59SJing LinKernelVersion: 5.6.0 154b131ad59SJing LinContact: dmaengine@vger.kernel.org 155b131ad59SJing LinDescription: The type of this work queue, it can be "kernel" type for work 156b131ad59SJing Lin queue usages in the kernel space or "user" type for work queue 157b131ad59SJing Lin usages by applications in user space. 158b131ad59SJing Lin 15977522b21SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/cdev_minor 160b131ad59SJing LinDate: Oct 25, 2019 161b131ad59SJing LinKernelVersion: 5.6.0 162b131ad59SJing LinContact: dmaengine@vger.kernel.org 163b131ad59SJing LinDescription: The minor number assigned to this work queue by the character 164b131ad59SJing Lin device driver. 165b131ad59SJing Lin 16677522b21SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/mode 167b131ad59SJing LinDate: Oct 25, 2019 168b131ad59SJing LinKernelVersion: 5.6.0 169b131ad59SJing LinContact: dmaengine@vger.kernel.org 170b131ad59SJing LinDescription: The work queue mode type for this work queue. 171b131ad59SJing Lin 17277522b21SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/priority 173b131ad59SJing LinDate: Oct 25, 2019 174b131ad59SJing LinKernelVersion: 5.6.0 175b131ad59SJing LinContact: dmaengine@vger.kernel.org 1763e42d1deSCarlos BilbaoDescription: The priority value of this work queue, it is a value relative to 177b131ad59SJing Lin other work queue in the same group to control quality of service 178b131ad59SJing Lin for dispatching work from multiple workqueues in the same group. 179b131ad59SJing Lin 18077522b21SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/state 181b131ad59SJing LinDate: Oct 25, 2019 182b131ad59SJing LinKernelVersion: 5.6.0 183b131ad59SJing LinContact: dmaengine@vger.kernel.org 184b131ad59SJing LinDescription: The current state of the work queue. 185b131ad59SJing Lin 18677522b21SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/threshold 187b131ad59SJing LinDate: Oct 25, 2019 188b131ad59SJing LinKernelVersion: 5.6.0 189b131ad59SJing LinContact: dmaengine@vger.kernel.org 190b131ad59SJing LinDescription: The number of entries in this work queue that may be filled 191b131ad59SJing Lin via a limited portal. 192b131ad59SJing Lin 193d7aad555SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/max_transfer_size 194d7aad555SDave JiangDate: Aug 28, 2020 195d7aad555SDave JiangKernelVersion: 5.10.0 196d7aad555SDave JiangContact: dmaengine@vger.kernel.org 197d7aad555SDave JiangDescription: The max transfer sized for this workqueue. Cannot exceed device 198d7aad555SDave Jiang max transfer size. Configurable parameter. 199d7aad555SDave Jiang 200e7184b15SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/max_batch_size 201e7184b15SDave JiangDate: Aug 28, 2020 202e7184b15SDave JiangKernelVersion: 5.10.0 203e7184b15SDave JiangContact: dmaengine@vger.kernel.org 204e7184b15SDave JiangDescription: The max batch size for this workqueue. Cannot exceed device 205e7184b15SDave Jiang max batch size. Configurable parameter. 206e7184b15SDave Jiang 20792de5fa2SDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/ats_disable 20892de5fa2SDave JiangDate: Nov 13, 2020 20992de5fa2SDave JiangKernelVersion: 5.11.0 21092de5fa2SDave JiangContact: dmaengine@vger.kernel.org 21192de5fa2SDave JiangDescription: Indicate whether ATS disable is turned on for the workqueue. 21292de5fa2SDave Jiang 0 indicates ATS is on, and 1 indicates ATS is off for the workqueue. 21392de5fa2SDave Jiang 214*e753a64bSDave JiangWhat: /sys/bus/dsa/devices/wq<m>.<n>/occupancy 215*e753a64bSDave JiangDate May 25, 2021 216*e753a64bSDave JiangKernelVersion: 5.14.0 217*e753a64bSDave JiangContact: dmaengine@vger.kernel.org 218*e753a64bSDave JiangDescription: Show the current number of entries in this WQ if WQ Occupancy 219*e753a64bSDave Jiang Support bit WQ capabilities is 1. 220*e753a64bSDave Jiang 22177522b21SDave JiangWhat: /sys/bus/dsa/devices/engine<m>.<n>/group_id 222b131ad59SJing LinDate: Oct 25, 2019 223b131ad59SJing LinKernelVersion: 5.6.0 224b131ad59SJing LinContact: dmaengine@vger.kernel.org 225b131ad59SJing LinDescription: The group that this engine belongs to. 226