PCI: dwc: Add debugfs based Error Injection support for DWC

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Add support to provide Error Injection interface to userspace.

This set of debug registers are part of the RAS DES feature present in
DesignWare PCIe controllers.

Signed-off-by: Shradha Todi <shradha.t@samsung.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Tested-by: Hrishikesh Deleep <hrishikesh.d@samsung.com>
Link: https://lore.kernel.org/r/20250221131548.59616-5-shradha.t@samsung.com
[kwilczynski: commit log, tidy up code comments, update documentation,
change debugfs property name from "duplicate_dllp" to "duplicate_tlp"]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>

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Shradha Todi 2025-02-21 18:45:47 +05:30 • committed by Krzysztof Wilczyński

parent 4fbfa17f9a

commit d20ee8e2db

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2 changed files with 240 additions and 2 deletions

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74

Documentation/ABI/testing/debugfs-dwc-pcie

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168

drivers/pci/controller/dwc/pcie-designware-debugfs.c

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