[v2,0/2] PCI: dw-rockchip: hide broken ATS cap in EP-mode

Message

Niklas Cassel March 7, 2025, 12:47 p.m. UTC

Hello there,

Address Translation Services (ATS) is broken on rk3588 when running the
PCIe controller in Endpoint Mode.

This causes IOTLB invalidation timeout errors on the host side when using
and rk3588 in Endpoint Mode, and you are unable to run pci_endpoint_test.

Solve this by hiding the ATS capability.
With this, we do not get any IOTLB invalidation timeouts, and we can run
pci_endpoint_test successfully.


Changes since v1:
-Created a generic function to hide an extended capability.
-Picked up tags.
-Improved commit message.


Niklas Cassel (2):
  PCI: dwc: ep: Add dw_pcie_ep_hide_ext_capability()
  PCI: dw-rockchip: Hide broken ATS capability

 .../pci/controller/dwc/pcie-designware-ep.c   | 38 +++++++++++++++++++
 drivers/pci/controller/dwc/pcie-designware.h  |  7 ++++
 drivers/pci/controller/dwc/pcie-dw-rockchip.c | 27 +++++++++++++
 3 files changed, 72 insertions(+)