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MLK-24939 PCI: only disable MSI for i.MX8 dwc root port

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Disable MSI only for i.MX8 DWC PCIe RC by connecting
with some PCIe devices. The patch just avoid to impact
other platforms that connect with the same EP devices.
Will remove the msi disable quirk once the issue is fixed.

Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
This commit is contained in:
Fugang Duan 2020-10-26 15:49:55 +08:00
parent 21b685bedc
commit 6644cc2f3b
1 changed files with 21 additions and 5 deletions
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26
drivers/pci/quirks.c
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@ -2518,6 +2518,22 @@ static void quirk_disable_all_msi(struct pci_dev *dev)
pci_no_msi();
pci_warn(dev, "MSI quirk detected; MSI disabled\n");
}
static void quirk_disable_nxp_imx_msi(struct pci_dev *dev)
{
struct pci_dev *host_bridge;
host_bridge = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), 0,
PCI_DEVFN(0, 0));
if (host_bridge) {
if (host_bridge->vendor == PCI_VENDOR_ID_SYNOPSYS &&
host_bridge->device == 0xabcd)
pci_no_msi();
pci_dev_put(host_bridge);
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
@ -2526,11 +2542,11 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disab
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x43ec, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x43ef, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_MARVELL_EXT, 0x2b42, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_MARVELL_EXT, 0x2b43, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_MARVELL_EXT, 0x2b44, quirk_disable_all_msi);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x43ec, quirk_disable_nxp_imx_msi);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x43ef, quirk_disable_nxp_imx_msi);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_MARVELL_EXT, 0x2b42, quirk_disable_nxp_imx_msi);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_MARVELL_EXT, 0x2b43, quirk_disable_nxp_imx_msi);
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_MARVELL_EXT, 0x2b44, quirk_disable_nxp_imx_msi);
/* Disable MSI on chipsets that are known to not support it */
static void quirk_disable_msi(struct pci_dev *dev)