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PCI/DPC: Quirk PIO log size for Intel Ice Lake Root Ports
commit3b8803494a
upstream. Commit5459c0b704
("PCI/DPC: Quirk PIO log size for certain Intel Root Ports") added quirks for Tiger and Alder Lake Root Ports but missed that the same issue exists also in the previous generation, Ice Lake. Apply the quirk for Ice Lake Root Ports as well. This prevents kernel complaints like: DPC: RP PIO log size 0 is invalid and also enables the DPC driver to dump the RP PIO Log registers when DPC is triggered. [bhelgaas: add dmesg warning and RP PIO Log dump info] Closes: https://bugzilla.kernel.org/show_bug.cgi?id=209943 Link: https://lore.kernel.org/r/20230511121905.73949-1-mika.westerberg@linux.intel.com Reported-by: Mark Blakeney <mark.blakeney@bullet-systems.net> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 7 additions and 2 deletions
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@ -5953,8 +5953,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c1, aspm_l1_acceptable_latency
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#ifdef CONFIG_PCIE_DPC
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/*
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* Intel Tiger Lake and Alder Lake BIOS has a bug that clears the DPC
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* RP PIO Log Size of the integrated Thunderbolt PCIe Root Ports.
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* Intel Ice Lake, Tiger Lake and Alder Lake BIOS has a bug that clears
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* the DPC RP PIO Log Size of the integrated Thunderbolt PCIe Root
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* Ports.
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*/
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static void dpc_log_size(struct pci_dev *dev)
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{
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@ -5977,6 +5978,10 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x461f, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x462f, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x463f, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x466e, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a1d, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a1f, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a21, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a23, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a23, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a25, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a27, dpc_log_size);
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