pcie-xilinx: Work-around for hardware DMA limit (32 bits) (1cfe9b2d) · Commits · github.com / riscvarchive / riscv-linux

Commit 1cfe9b2d authored Sep 21, 2017 by

Wesley W. Terpstra Committed by Palmer Dabbelt Nov 22, 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 f7d21ab9

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