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Add driver for Rockchip PCIe root complex found in RK3399 SOC.
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Authored by mmel on Dec 7 2019, 5:02 PM.

Details

Summary

Unfortunately, there are some limitations:

  • memory aperture of this controller is only 16MiB, so it is nearly unusable for graphic cards
  • every attempt to generate type 1 config cycle always causes trap. These config cycles are disabled now and we don't support cards with PCIe switch.
  • in some cases, attempt to do config cycle to (probably) not-yet ready card also causes trap. This cannot be detected at runtime, but it seems like very rare issue.

MFC after: 3 weeks

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Repository
rS FreeBSD src repository - subversion
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