linux-kernel - [PATCH 0/2] Let pci_fixup_final access iommu

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Date:   Tue, 12 May 2020 12:08:29 +0800
From:   Zhangfei Gao <zhangfei.gao@...aro.org>
To:     Joerg Roedel <joro@...tes.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Hanjun Guo <guohanjun@...wei.com>,
        Sudeep Holla <sudeep.holla@....com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        jean-philippe <jean-philippe@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        kenneth-lee-2012@...mail.com, Wangzhou <wangzhou1@...ilicon.com>
Cc:     linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linux-acpi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Zhangfei Gao <zhangfei.gao@...aro.org>
Subject: [PATCH 0/2] Let pci_fixup_final access iommu_fwnode

Some platform devices appear as PCI but are
actually on the AMBA bus, and they need fixup in
drivers/pci/quirks.c handling iommu_fwnode.
So calling pci_fixup_final after iommu_fwnode is allocated.

For example: 
Hisilicon platform device need fixup in 
drivers/pci/quirks.c

+static void quirk_huawei_pcie_sva(struct pci_dev *pdev)
+{
+	struct iommu_fwspec *fwspec;
+
+	pdev->eetlp_prefix_path = 1;
+	fwspec = dev_iommu_fwspec_get(&pdev->dev);
+	if (fwspec)
+		fwspec->can_stall = 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);
 

Zhangfei Gao (2):
  iommu/of: Let pci_fixup_final access iommu_fwnode
  ACPI/IORT: Let pci_fixup_final access iommu_fwnode

 drivers/acpi/arm64/iort.c | 1 +
 drivers/iommu/of_iommu.c  | 1 +
 2 files changed, 2 insertions(+)

-- 
2.7.4