diff options
| author | Logan Gunthorpe <logang@deltatee.com> | 2019-10-22 16:01:20 -0600 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2019-10-30 10:36:19 +0100 |
| commit | 3332364e4ebc0581d133a334645a20fd13b580f1 (patch) | |
| tree | 3244dce6ffe3c652f0f64858db7a4effa980bcdb /drivers/iommu/amd_iommu_types.h | |
| parent | a5bbbf37c6f8522a1afd46c37b5a0d1ce63232b7 (diff) | |
iommu/amd: Support multiple PCI DMA aliases in device table
Non-Transparent Bridge (NTB) devices (among others) may have many DMA
aliases seeing the hardware will send requests with different device ids
depending on their origin across the bridged hardware.
See commit ad281ecf1c7d ("PCI: Add DMA alias quirk for Microsemi
Switchtec NTB") for more information on this.
The AMD IOMMU ignores all the PCI aliases except the last one so DMA
transfers from these aliases will be blocked on AMD hardware with the
IOMMU enabled.
To fix this, ensure the DTEs are cloned for every PCI alias. This is
done by copying the DTE data for each alias as well as the IVRS alias
every time it is changed.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd_iommu_types.h')
| -rw-r--r-- | drivers/iommu/amd_iommu_types.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index becbd3bd9180..b611459f369a 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -638,8 +638,8 @@ struct iommu_dev_data { struct list_head list; /* For domain->dev_list */ struct llist_node dev_data_list; /* For global dev_data_list */ struct protection_domain *domain; /* Domain the device is bound to */ + struct pci_dev *pdev; u16 devid; /* PCI Device ID */ - u16 alias; /* Alias Device ID */ bool iommu_v2; /* Device can make use of IOMMUv2 */ bool passthrough; /* Device is identity mapped */ struct { |