diff options
Diffstat (limited to 'Documentation/ABI/stable/sysfs-driver-dma-idxd')
| -rw-r--r-- | Documentation/ABI/stable/sysfs-driver-dma-idxd | 52 |
1 files changed, 41 insertions, 11 deletions
diff --git a/Documentation/ABI/stable/sysfs-driver-dma-idxd b/Documentation/ABI/stable/sysfs-driver-dma-idxd index df4afbccf037..0c2b613f2373 100644 --- a/Documentation/ABI/stable/sysfs-driver-dma-idxd +++ b/Documentation/ABI/stable/sysfs-driver-dma-idxd @@ -41,14 +41,14 @@ 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 +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 bandwidth tokens supported by this device. - The bandwidth tokens represent resources within the DSA +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. + support operations. See DSA spec v1.2 9.2.4 Total Read Buffers. What: /sys/bus/dsa/devices/dsa<m>/max_transfer_size Date: Oct 25, 2019 @@ -115,13 +115,13 @@ 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 +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 bandwidth tokens that may be in use at +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. + device. See DSA spec v1.2 9.2.8 GENCFG on Global Read Buffer Limit. What: /sys/bus/dsa/devices/dsa<m>/cmd_status Date: Aug 28, 2020 @@ -220,8 +220,38 @@ 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/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. + +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. + +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. |