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    Subject[PATCH v4 2/3] PCI: Add a quirk to set pasid_no_tlp for HiSilicon chips
    Date
    HiSilicon KunPeng920 and KunPeng930 have devices appear as PCI but are
    actually on the AMBA bus. These fake PCI devices have PASID capability
    though not supporting TLP.

    Add a quirk to set pasid_no_tlp for these devices.

    Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
    Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
    Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
    ---
    drivers/pci/quirks.c | 14 ++++++++++++++
    1 file changed, 14 insertions(+)

    diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
    index dcb229d..9331113 100644
    --- a/drivers/pci/quirks.c
    +++ b/drivers/pci/quirks.c
    @@ -1820,6 +1820,20 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quir

    DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch);

    +static void quirk_huawei_pcie_sva(struct pci_dev *pdev)
    +{
    + if (pdev->revision != 0x21 && pdev->revision != 0x30)
    + return;
    +
    + pdev->pasid_no_tlp = 1;
    +}
    +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa250, quirk_huawei_pcie_sva);
    +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa251, quirk_huawei_pcie_sva);
    +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa255, quirk_huawei_pcie_sva);
    +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa256, quirk_huawei_pcie_sva);
    +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa258, quirk_huawei_pcie_sva);
    +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa259, quirk_huawei_pcie_sva);
    +
    /*
    * It's possible for the MSI to get corrupted if SHPC and ACPI are used
    * together on certain PXH-based systems.
    --
    2.7.4
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