pcie-xilinx: Work-around for hardware DMA limit (32 bits) (8b1c988a) · Commits · github.com / riscv / riscv-linux

Commit 8b1c988a authored Sep 21, 2017 by

Wesley W. Terpstra Committed by Palmer Dabbelt Nov 06, 2017

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 8c068a9a

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