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| author | Jason Gunthorpe <jgg@nvidia.com> | 2024-04-30 20:21:36 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-05-01 17:33:52 +0300 |
| commit | af8f0b83ea2bcc7cd365c32044f31bdadc07c351 (patch) | |
| tree | 0ef8d78bcde39dc80f98c22232d2db7cded45088 /drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | |
| parent | e9d1e4ff74b96cf180d04be38541a245c8c574c1 (diff) | |
| download | linux-af8f0b83ea2bcc7cd365c32044f31bdadc07c351.tar.xz | |
iommu/arm-smmu-v3: Consolidate clearing a CD table entry
A cleared entry is all 0's. Make arm_smmu_clear_cd() do this sequence.
If we are clearing an entry and for some reason it is not already
allocated in the CD table then something has gone wrong.
Remove case (5) from arm_smmu_write_ctx_desc().
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Michael Shavit <mshavit@google.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Moritz Fischer <moritzf@google.com>
Reviewed-by: Mostafa Saleh <smostafa@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/4-v9-5040dc602008+177d7-smmuv3_newapi_p2_jgg@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h')
| -rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index bb08f087ba39..99fd6f24caa8 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -751,6 +751,7 @@ extern struct xarray arm_smmu_asid_xa; extern struct mutex arm_smmu_asid_lock; extern struct arm_smmu_ctx_desc quiet_cd; +void arm_smmu_clear_cd(struct arm_smmu_master *master, ioasid_t ssid); struct arm_smmu_cd *arm_smmu_get_cd_ptr(struct arm_smmu_master *master, u32 ssid); void arm_smmu_make_s1_cd(struct arm_smmu_cd *target, |