PCI: Disable MSI for HiSilicon Hip06/Hip07 Root Ports
The PCIe Root Port in Hip06/Hip07 SoCs advertises an MSI capability, but it
cannot generate MSIs. It can transfer MSI/MSI-X from downstream devices,
but does not support MSI/MSI-X itself.
Add a quirk to prevent use of MSI/MSI-X by the Root Port.
[bhelgaas: changelog, sort vendor ID #define, drop device ID #define]
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 1800bef..c49ac99 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1634,6 +1634,7 @@ static void quirk_pcie_mch(struct pci_dev *pdev)
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, quirk_pcie_mch);
/*
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 73dda0e..a4f77fe 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2516,6 +2516,8 @@
#define PCI_DEVICE_ID_KORENIX_JETCARDF2 0x1700
#define PCI_DEVICE_ID_KORENIX_JETCARDF3 0x17ff
+#define PCI_VENDOR_ID_HUAWEI 0x19e5
+
#define PCI_VENDOR_ID_NETRONOME 0x19ee
#define PCI_DEVICE_ID_NETRONOME_NFP3200 0x3200
#define PCI_DEVICE_ID_NETRONOME_NFP3240 0x3240