PCI: Limit config space size for Netronome NFP4000

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: Jiri Slaby <jslaby@suse.cz>

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 122ce82f770eb1f537ebd26dc14f0284d3fc97c1..019dbc1fae1119a928bba71ad8f7c19e011765b7 100644 (file)
--- 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);