From: Jacek Lawrynowicz <[email protected]> MIC x200 NTB forwards PCIe traffic using multiple alien RID. They have to be added as aliases to the DMA device in order to allow buffer access when IOMMU is enabled.
Signed-off-by: Jacek Lawrynowicz <[email protected]> Acked-by: David Woodhouse <[email protected]> --- drivers/pci/quirks.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index cf023ea..ac23a30 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3696,6 +3696,19 @@ DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias); DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias); /* + * MIC x200 NTB forwards PCIe traffic using multiple alien RID. They have to + * be added as aliases to the DMA device in order to allow buffer access + * when IOMMU is enabled. + */ +static void quirk_mic_x200_dma_alias(struct pci_dev *pdev) +{ + pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0)); + pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0)); + pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3)); +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias); + +/* * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero) * class code. Fix it. */ _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
