Commit 8bcf4525 authored by Alex Williamson's avatar Alex Williamson Committed by Bjorn Helgaas
Browse files

PCI: Mark Intel i40e NIC INTx masking as broken 



All of the i40e (XL710/X710) 10/20/40GbE NICs lack support for indicating
INTx is asserted via the interrupt bit in the PCI status register.  The
DisINTx bit in the command register is functional, causing these devices to
be incorrectly detected as supporting INTx masking.  Quirk them to properly
indicate no INTx masking support.

Device IDs copied from i40e_devids.h.

Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
CC: John Ronciak <john.ronciak@intel.com>
CC: Jesse Brandeburg <jesse.brandeburg@intel.com>
parent 9735a227

drivers/pci/quirks.c

+33 −0
Original line number Diff line number Diff line
@@ -3150,6 +3150,39 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_REALTEK, 0x8169, 
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,

			 quirk_broken_intx_masking);



/*

 * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking,

 * DisINTx can be set but the interrupt status bit is non-functional.

 */

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1572,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1574,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1580,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1581,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1583,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1584,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1585,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1586,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1587,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1588,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1589,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x37d0,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x37d1,

			 quirk_broken_intx_masking);

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x37d2,

			 quirk_broken_intx_masking);



static void quirk_no_bus_reset(struct pci_dev *dev)

{

	dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;

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