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Differential D53932

xae, axidma: rewrite
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Authored by br on Nov 26 2025, 4:23 PM.
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rG974ecf68903d: xae(4), axidma(4): rewrite DMA operation.
Summary

Rewrite xae(4) and axidma(4) drivers.
Due to performance issues on low-speed FPGA remove usage of xdma(4) scatter-gather framework. Instead, provide a minimalistic interface between two drivers.

Test Plan

This increases performance 4-5 times on Codasip FPGA. Tested using nc(1).

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rG FreeBSD src repository
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Event Timeline

br requested review of this revision.Nov 26 2025, 4:23 PM
br created this revision.
This revision was not accepted when it landed; it landed in state Needs Review.Nov 26 2025, 4:39 PM
Closed by commit rG974ecf68903d: xae(4), axidma(4): rewrite DMA operation. (authored by br). · Explain Why
This revision was automatically updated to reflect the committed changes.
br added a commit: rG974ecf68903d: xae(4), axidma(4): rewrite DMA operation..
Herald added a subscriber: imp. · View Herald TranscriptNov 26 2025, 4:39 PM

Revision Contents
Changeset List

PathSize
sys/
conf/
3 lines
dev/
xilinx/
11 lines
528 lines
53 lines
997 lines
51 lines

Diff 167143

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sys/conf/files.riscv

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sys/dev/xilinx/axidma.h

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sys/dev/xilinx/axidma.c

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sys/dev/xilinx/axidma_if.m

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sys/dev/xilinx/if_xae.c

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sys/dev/xilinx/if_xaevar.h

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