iommu/amd: Introduce iommu_dev_data.flags to track device capabilities

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Currently we use struct iommu_dev_data.iommu_v2 to keep track of the device
ATS, PRI, and PASID capabilities. But these capabilities can be enabled
independently (except PRI requires ATS support). Hence, replace
the iommu_v2 variable with a flags variable, which keep track of the device
capabilities.

From commit 9bf49e36d7 ("PCI/ATS: Handle sharing of PF PRI Capability
with all VFs"), device PRI/PASID is shared between PF and any associated
VFs. Hence use pci_pri_supported() and pci_pasid_features() instead of
pci_find_ext_capability() to check device PRI/PASID support.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20230921092147.5930-13-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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This commit is contained in:

Vasant Hegde 2023-09-21 09:21:45 +00:00 • committed by Joerg Roedel

parent 739eb25514

commit 92e2bd56a5

2 changed files with 30 additions and 19 deletions

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3

drivers/iommu/amd/amd_iommu_types.h

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46

drivers/iommu/amd/iommu.c

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