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Add PCI_VENDOR_ID_ROCKCHIP to the list of RAS DES vendor specific IDs.
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Link: https://lore.kernel.org/r/20250225145657.944925-2-cassel@kernel.org
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
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Add support to provide Silicon Debug interface to userspace.
This set of debug registers are part of the RAS DES feature present in
DesignWare PCIe controllers.
Co-developed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
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/20250221131548.59616-4-shradha.t@samsung.com
[kwilczynski: commit log, tidy up Kconfig and drop "default y", tidy up
code comments, squashed patch that fixes a NULL pointer dereference when
debugfs is already unavailable during clean-up from
https://lore.kernel.org/linux-pci/20250225171239.19574-2-manivannan.sadhasivam@linaro.org,
refactor dwc_pcie_debugfs_init() to not return errors, squashed patch that
changes how lack of the RAS DES capability is handled from
https://lore.kernel.org/linux-pci/20250304151814.6xu7cbpwpqrvcad5@thinkpad]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
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Move the common DWC struct definitions, which are shared across all the
DesginWare PCIe IPs, to a new header file called 'pcie-dwc.h', so that
other users e.g., debugfs, perf and sysfs can make use of them.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Shradha Todi <shradha.t@samsung.com>
Reviewed-by: Shuai Xue <xueshuai@linux.alibaba.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Tested-by: Hrishikesh Deleep <hrishikesh.d@samsung.com>
Link: https://lore.kernel.org/r/20250221131548.59616-2-shradha.t@samsung.com
[kwilczynski: commit log, tidy up the new header file]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
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