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iommu/arm-smmu-v3: Allow a PASID to be set when RID is IDENTITY/BLOCKED

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If the STE doesn't point to the CD table we can upgrade it by
reprogramming the STE with the appropriate S1DSS. We may also need to turn
on ATS at the same time.

Keep track if the installed STE is pointing at the cd_table and the ATS
state to trigger this path.

Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/13-v9-5cd718286059+79186-smmuv3_newapi_p2b_jgg@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Jason Gunthorpe 2024-06-25 09:37:44 -03:00 • committed by Will Deacon
commit 8ee9175c25
2 changed files with 49 additions and 3 deletions
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