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    Subject[PATCH 3.10 06/16] PCI: Limit config space size for Netronome NFP4000
    Date
    From: Simon Horman <simon.horman@netronome.com>

    commit c2e771b02792d222cbcd9617fe71482a64f52647 upstream.

    Like the NFP6000, the NFP4000 as an erratum where reading/writing to PCI
    config space addresses above 0x600 can cause the NFP to generate PCIe
    completion timeouts.

    Limit the NFP4000's PF's config space size to 0x600 bytes as is already
    done for the NFP6000.

    The NFP4000's VF is 0x6004 (PCI_DEVICE_ID_NETRONOME_NFP6000_VF), the same
    device ID as the NFP6000's VF. Thus, its config space is already limited
    by the existing use of quirk_nfp6000().

    Signed-off-by: Simon Horman <simon.horman@netronome.com>
    Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
    Signed-off-by: Willy Tarreau <w@1wt.eu>
    ---
    drivers/pci/quirks.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
    index df1030c..a663715 100644
    --- a/drivers/pci/quirks.c
    +++ b/drivers/pci/quirks.c
    @@ -300,6 +300,7 @@ static void quirk_nfp6000(struct pci_dev *dev)
    {
    dev->cfg_size = 0x600;
    }
    +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000);
    DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000);
    DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000);

    --
    2.8.0.rc2.1.gbe9624a
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