drivers/dma/xilinx · keep

AMD/Xilinx AXI DMA and Zynq DMA engines

A collection of DMA (direct memory access) engine drivers for AMD/Xilinx FPGAs and adaptive SoCs, covering the AXI DMA soft-IP block that customers instantiate in programmable logic, the hardened DMA controller in Zynq UltraScale+ MPSoCs, the PCIe-attached XDMA bridge, and the display-pipeline DMA used by the DisplayPort subsystem on those parts.

keep conf=0.94 deploy=medium replacement=none subsystem=dma category=bus-other

94%

recommendation

It should stay in the kernel because the hardware is still actively sold and supported. AMD continues to ship the AXI DMA soft-IP block and Zynq UltraScale+ MPSoCs (with lifecycle commitments running out to 2045), and the directory is seeing fresh upstream fixes in 2025-2026 from multiple contributors, indicating healthy maintenance rather than bit-rot.

repository signals

6 files

7,988 source lines

111 commits, 5y

+2,397 / −517 lines added / removed, 5y

53 authors, 5y

monthly commits · 2021-04-21 → 2026-04-21 · 111 total · active in 43/61 months

sources

patch.msgid.link
Recent 2026 upstream patch traffic exists for this directory; xilinx_dma received a functional fix for AXIDMA reset timeout handling.
patch.msgid.link
Recent 2026 upstream patch traffic exists from another author; xilinx_dma received a residue-calculation fix, indicating active maintenance rather than removal.
amd.com
AMD still markets AXI DMA IP for current and legacy device families including Zynq 7000, Zynq UltraScale+ MPSoC, and Versal Premium.
amd.com
AMD still sells Zynq UltraScale+ MPSoCs and states UltraScale+ FPGAs/adaptive SoCs have lifecycle support through 2045.

codex reasoning notes (technical)

Real driver directory: Makefile builds xilinx_dma, xdma, zynqmp_dma, and xilinx_dpdma. Local tree inspection via shell (`rg`, `find`, `git log`) shows multiple active DMA engine drivers, not helper code. Upstream attention is current: `git show` trailer extraction exposed 2025-2026 patch.msgid.link URLs for recent fixes in this path, and I found no evidence of removal discussion in the sampled recent history. Deployment remains relevant but niche: AMD web search results show AXI DMA IP and Zynq UltraScale+ MPSoC are still current products with long lifecycle commitments, so this is not legacy-only hardware. No single replacement driver covers the same mixed set of Xilinx soft-IP DMA blocks and ZynqMP display/SoC DMA engines.