Commit 3bbec72a authored by Federico Vaga's avatar Federico Vaga

doc: add information about DMA from debugfs

Signed-off-by: Federico Vaga's avatarFederico Vaga <>
parent a77e93a2
......@@ -231,3 +231,9 @@ attributes. Here we focus only on those.
``<pci-id>/spec-<pci-id>/build_info`` [R]
It shows the FPGA configuration synthesis information
``<pci-id>/spec-<pci-id>/dma`` [RW]
It exports DMA capabilities to user-space. The user can ``open(2)``
and ``close(2)`` to request and release a DMA engine channel. Then,
the user can use ``lseek(2)`` to set the offset in the DDR, and
``read(2)``/``write(2)`` to start the DMA transfer.
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment