pcie-xilinx: Work-around for hardware DMA limit (32 bits) (13e21c07) · Commits · github.com / riscv / riscv-linux

Unverified Commit 13e21c07 authored Sep 21, 2017 by

Wesley W. Terpstra Committed by Palmer Dabbelt Aug 01, 2018

pcie-xilinx: Work-around for hardware DMA limit (32 bits)



This PCIe bridge only has a 32 bit bus master interface, thus truncating
the DMA capability of all PCIe devices attached beneath it. This caps
the child device capability so that these devices work on systems with
physical memory beyond the 4GiB threshold.

Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>

parent e44cb7c7

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