Commit f949fb3e authored by Zhangfei Gao's avatar Zhangfei Gao Committed by Zheng Zengkai
Browse files

PCI: Add a quirk to set pasid_no_tlp for HiSilicon chips 

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I472UK?from=project-issue



----------------------------------------------------------------------

HiSilicon KunPeng920 and KunPeng930 have devices appear as PCI but are
actually on the AMBA bus. These fake PCI devices have PASID capability
though not supporting TLP.

Add a quirk to set pasid_no_tlp for these devices.

Signed-off-by: default avatarZhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: default avatarJean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: default avatarZhou Wang <wangzhou1@hisilicon.com>
Reviewed-by: default avatarHao Fang <fanghao11@huawei.com>
Reviewed-by: default avatarMingqiang Ling <lingmingqiang@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent bbf864aa

drivers/pci/quirks.c

+14 −0
Original line number Diff line number Diff line
@@ -1825,6 +1825,20 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quir 


DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch);



static void quirk_huawei_pcie_sva(struct pci_dev *pdev)

{

	if (pdev->revision != 0x21 && pdev->revision != 0x30)

		return;



	pdev->pasid_no_tlp = 1;

}

DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa250, quirk_huawei_pcie_sva);

DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa251, quirk_huawei_pcie_sva);

DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa255, quirk_huawei_pcie_sva);

DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa256, quirk_huawei_pcie_sva);

DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa258, quirk_huawei_pcie_sva);

DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa259, quirk_huawei_pcie_sva);



/*

 * It's possible for the MSI to get corrupted if SHPC and ACPI are used

 * together on certain PXH-based systems.