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Commit 9f33a2ae authored by Jason S. McMullan's avatar Jason S. McMullan Committed by Bjorn Helgaas
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PCI: Limit config space size for Netronome NFP6000 family 



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

Limit the NFP6000's config space size to 0x600 bytes.

Signed-off-by: default avatarJason S. McMullan <jason.mcmullan@netronome.com>
[simon: edited changelog]
Signed-off-by: default avatarSimon Horman <simon.horman@netronome.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent a755e169

drivers/pci/quirks.c

+11 −0
Original line number Diff line number Diff line
@@ -287,6 +287,17 @@ static void quirk_citrine(struct pci_dev *dev) 
}

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM,	PCI_DEVICE_ID_IBM_CITRINE,	quirk_citrine);



/*

 * This chip can cause bus lockups if config addresses above 0x600

 * are read or written.

 */

static void quirk_nfp6000(struct pci_dev *dev)

{

	dev->cfg_size = 0x600;

}

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);



/*  On IBM Crocodile ipr SAS adapters, expand BAR to system page size */

static void quirk_extend_bar_to_page(struct pci_dev *dev)

{